From ce2b051a48d7f120e22c5122e9d0cf556a7abd75 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Thu, 14 Nov 2024 12:16:36 +0100
Subject: [PATCH 01/37] Add NovaCustom V540TU board
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Co-authored-by: Michał Kopeć <michal.kopec@3mdeb.com>
Co-authored-by: Thierry Laurion <insurgo@riseup.net>
Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
Signed-off-by: Thierry Laurion <insurgo@riseup.net>
---
 .circleci/config.yml                          |   9 +-
 .../novacustom-v540tu.config                  |  71 ++
 config/coreboot-novacustom-v540tu.config      | 943 ++++++++++++++++++
 config/linux-nitropad-x.config                | 460 ++++++---
 modules/coreboot                              |   3 +-
 .../0001-tpm_pirq-not_conditional.patch       |  27 -
 ...bmem_tpm-clear_whole_log_on_creation.patch |  37 -
 7 files changed, 1334 insertions(+), 216 deletions(-)
 create mode 100644 boards/novacustom-v540tu/novacustom-v540tu.config
 create mode 100644 config/coreboot-novacustom-v540tu.config
 delete mode 100644 patches/coreboot-dasharo-unreleased/0001-tpm_pirq-not_conditional.patch
 delete mode 100644 patches/coreboot-dasharo-unreleased/0004-cbmem_tpm-clear_whole_log_on_creation.patch

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 1ee70a4a..0c79d75a 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -518,6 +518,13 @@ workflows:
           requires:
             - novacustom_nv4x_adl
 
+      - build:
+          name: novacustom-v540tu
+          target: novacustom-v540tu
+          subcommand: ""
+          requires:
+            - nitropad-nv41
+
       # coreboot 4.11
       - build:
           name: UNMAINTAINED_kgpe-d16_workstation
@@ -533,7 +540,7 @@ workflows:
           subcommand: ""
           requires:
             - librem_l1um
-      
+
       # coreboot 4.11
       - build:
           name: UNMAINTAINED_kgpe-d16_server
diff --git a/boards/novacustom-v540tu/novacustom-v540tu.config b/boards/novacustom-v540tu/novacustom-v540tu.config
new file mode 100644
index 00000000..a4935210
--- /dev/null
+++ b/boards/novacustom-v540tu/novacustom-v540tu.config
@@ -0,0 +1,71 @@
+# NovaCustom V54 MTL (integrated graphics) board configuration
+
+export CONFIG_COREBOOT=y
+export CONFIG_COREBOOT_VERSION=dasharo
+export CONFIG_LINUX_VERSION=6.1.8
+
+CONFIG_COREBOOT_CONFIG=config/coreboot-novacustom-v540tu.config
+CONFIG_LINUX_CONFIG=config/linux-nitropad-x.config
+
+#Enable DEBUG output
+export CONFIG_DEBUG_OUTPUT=y
+export CONFIG_ENABLE_FUNCTION_TRACING_OUTPUT=y
+#Enable TPM2 pcap output under /tmp
+#export CONFIG_TPM2_CAPTURE_PCAP=y
+
+#On-demand hardware support (modules.cpio)
+CONFIG_LINUX_USB=y
+CONFIG_LINUX_E1000=y
+CONFIG_MOBILE_TETHERING=y
+
+#Modules packed into tools.cpio
+CONFIG_CRYPTSETUP2=y
+CONFIG_FLASHPROG=y
+CONFIG_FLASHTOOLS=y
+CONFIG_GPG2=y
+CONFIG_KEXEC=y
+CONFIG_UTIL_LINUX=y
+CONFIG_LVM2=y
+CONFIG_MBEDTLS=y
+CONFIG_PCIUTILS=y
+CONFIG_MSRTOOLS=y
+#Remote attestation support
+# TPM2 requirements
+CONFIG_TPM2_TSS=y
+CONFIG_OPENSSL=y
+#Remote Attestation common tools
+CONFIG_POPT=y
+CONFIG_QRENCODE=y
+CONFIG_TPMTOTP=y
+#HOTP based remote attestation for supported USB Security dongle
+#With/Without TPM support
+CONFIG_HOTPKEY=y
+#Nitrokey Storage admin tool (deprecated)
+#CONFIG_NKSTORECLI=n
+#GUI Support
+#Console based Whiptail support(Console based, no FB):
+#CONFIG_SLANG=y
+#CONFIG_NEWT=y
+#FBWhiptail based (Graphical):
+CONFIG_CAIRO=y
+CONFIG_FBWHIPTAIL=y
+#Additional tools (tools.cpio):
+#SSH server (requires ethernet drivers, eg: CONFIG_LINUX_E1000E)
+CONFIG_DROPBEAR=y
+
+#Runtime configuration
+#Automatically boot if HOTP is valid
+export CONFIG_AUTO_BOOT_TIMEOUT=5
+#TPM2 requirements
+export CONFIG_TPM2_TOOLS=y
+export CONFIG_PRIMARY_KEY_TYPE=ecc
+#TPM1 requirements
+#export CONFIG_TPM=y
+export CONFIG_BOOTSCRIPT=/bin/gui-init
+export CONFIG_BOOT_REQ_HASH=n
+export CONFIG_BOOT_REQ_ROLLBACK=n
+export CONFIG_BOOT_KERNEL_ADD=""
+export CONFIG_BOOT_KERNEL_REMOVE="intel_iommu=on intel_iommu=igfx_off"
+export CONFIG_BOARD_NAME="NovaCustom V540TU"
+export CONFIG_FLASH_OPTIONS="flashprog --progress --programmer internal"
+export CONFIG_AUTO_BOOT_TIMEOUT=5
diff --git a/config/coreboot-novacustom-v540tu.config b/config/coreboot-novacustom-v540tu.config
new file mode 100644
index 00000000..363f525c
--- /dev/null
+++ b/config/coreboot-novacustom-v540tu.config
@@ -0,0 +1,943 @@
+#
+# Automatically generated file; DO NOT EDIT.
+# coreboot configuration
+#
+
+#
+# General setup
+#
+CONFIG_COREBOOT_BUILD=y
+CONFIG_LOCALVERSION="v0.9.0-rc6"
+CONFIG_CBFS_PREFIX="fallback"
+CONFIG_COMPILER_GCC=y
+# CONFIG_COMPILER_LLVM_CLANG is not set
+CONFIG_ARCH_SUPPORTS_CLANG=y
+# CONFIG_ANY_TOOLCHAIN is not set
+# CONFIG_CCACHE is not set
+# CONFIG_IWYU is not set
+# CONFIG_FMD_GENPARSER is not set
+# CONFIG_UTIL_GENPARSER is not set
+CONFIG_OPTION_BACKEND_NONE=y
+# CONFIG_USE_OPTION_TABLE is not set
+CONFIG_COMPRESS_RAMSTAGE_LZMA=y
+# CONFIG_COMPRESS_RAMSTAGE_LZ4 is not set
+CONFIG_SEPARATE_ROMSTAGE=y
+CONFIG_INCLUDE_CONFIG_FILE=y
+CONFIG_COLLECT_TIMESTAMPS=y
+# CONFIG_TIMESTAMPS_ON_CONSOLE is not set
+CONFIG_USE_BLOBS=y
+# CONFIG_USE_AMD_BLOBS is not set
+# CONFIG_USE_QC_BLOBS is not set
+# CONFIG_COVERAGE is not set
+# CONFIG_UBSAN is not set
+CONFIG_HAVE_ASAN_IN_RAMSTAGE=y
+# CONFIG_ASAN is not set
+# CONFIG_NO_STAGE_CACHE is not set
+CONFIG_TSEG_STAGE_CACHE=y
+# CONFIG_UPDATE_IMAGE is not set
+# CONFIG_BOOTSPLASH_IMAGE is not set
+# CONFIG_FW_CONFIG is not set
+
+#
+# Software Bill Of Materials (SBOM)
+#
+# CONFIG_SBOM is not set
+# end of Software Bill Of Materials (SBOM)
+# end of General setup
+
+#
+# Mainboard
+#
+
+#
+# Important: Run 'make distclean' before switching boards
+#
+# CONFIG_VENDOR_51NB is not set
+# CONFIG_VENDOR_ACER is not set
+# CONFIG_VENDOR_ADLINK is not set
+# CONFIG_VENDOR_AMD is not set
+# CONFIG_VENDOR_AOPEN is not set
+# CONFIG_VENDOR_APPLE is not set
+# CONFIG_VENDOR_ASROCK is not set
+# CONFIG_VENDOR_ASUS is not set
+# CONFIG_VENDOR_BIOSTAR is not set
+# CONFIG_VENDOR_BOSTENTECH is not set
+# CONFIG_VENDOR_BYTEDANCE is not set
+# CONFIG_VENDOR_CAVIUM is not set
+CONFIG_VENDOR_CLEVO=y
+# CONFIG_VENDOR_COMPULAB is not set
+# CONFIG_VENDOR_DELL is not set
+# CONFIG_VENDOR_EMULATION is not set
+# CONFIG_VENDOR_EXAMPLE is not set
+# CONFIG_VENDOR_FACEBOOK is not set
+# CONFIG_VENDOR_FOXCONN is not set
+# CONFIG_VENDOR_GETAC is not set
+# CONFIG_VENDOR_GIGABYTE is not set
+# CONFIG_VENDOR_GOOGLE is not set
+# CONFIG_VENDOR_HARDKERNEL is not set
+# CONFIG_VENDOR_HP is not set
+# CONFIG_VENDOR_IBASE is not set
+# CONFIG_VENDOR_IBM is not set
+# CONFIG_VENDOR_INTEL is not set
+# CONFIG_VENDOR_INVENTEC is not set
+# CONFIG_VENDOR_KONTRON is not set
+# CONFIG_VENDOR_LENOVO is not set
+# CONFIG_VENDOR_LIBRETREND is not set
+# CONFIG_VENDOR_MSI is not set
+# CONFIG_VENDOR_NOVACUSTOM is not set
+# CONFIG_VENDOR_OCP is not set
+# CONFIG_VENDOR_OPENCELLULAR is not set
+# CONFIG_VENDOR_PACKARDBELL is not set
+# CONFIG_VENDOR_PCENGINES is not set
+# CONFIG_VENDOR_PINE64 is not set
+# CONFIG_VENDOR_PORTWELL is not set
+# CONFIG_VENDOR_PRODRIVE is not set
+# CONFIG_VENDOR_PROTECTLI is not set
+# CONFIG_VENDOR_PURISM is not set
+# CONFIG_VENDOR_RAZER is not set
+# CONFIG_VENDOR_RODA is not set
+# CONFIG_VENDOR_SAMSUNG is not set
+# CONFIG_VENDOR_SAPPHIRE is not set
+# CONFIG_VENDOR_SIEMENS is not set
+# CONFIG_VENDOR_SIFIVE is not set
+# CONFIG_VENDOR_STARLABS is not set
+# CONFIG_VENDOR_SUPERMICRO is not set
+# CONFIG_VENDOR_SYSTEM76 is not set
+# CONFIG_VENDOR_TI is not set
+# CONFIG_VENDOR_UP is not set
+CONFIG_MAINBOARD_FAMILY="Not Applicable"
+CONFIG_MAINBOARD_PART_NUMBER="V54x_6x_TU"
+CONFIG_MAINBOARD_VERSION="V540TU"
+CONFIG_MAINBOARD_DIR="clevo/mtl-h"
+CONFIG_DIMM_MAX=4
+CONFIG_DIMM_SPD_SIZE=1024
+CONFIG_FMDFILE=""
+# CONFIG_NO_POST is not set
+CONFIG_MAINBOARD_VENDOR="Clevo"
+CONFIG_CBFS_SIZE=0x1000000
+CONFIG_CONSOLE_SERIAL=y
+CONFIG_MAX_CPUS=22
+CONFIG_ONBOARD_VGA_IS_PRIMARY=y
+# CONFIG_POST_DEVICE is not set
+# CONFIG_POST_IO is not set
+CONFIG_UART_FOR_CONSOLE=0
+CONFIG_DEVICETREE="devicetree.cb"
+# CONFIG_VBOOT is not set
+CONFIG_VBOOT_VBNV_OFFSET=0x28
+CONFIG_VARIANT_DIR="igpu"
+CONFIG_OVERRIDE_DEVICETREE="variants/$(CONFIG_VARIANT_DIR)/overridetree.cb"
+# CONFIG_VGA_BIOS is not set
+CONFIG_MAINBOARD_SMBIOS_MANUFACTURER="Notebook"
+CONFIG_INTEL_GMA_VBT_FILE="src/mainboard/$(MAINBOARDDIR)/variants/$(VARIANT_DIR)/data.vbt"
+# CONFIG_DISABLE_HECI1_AT_PRE_BOOT is not set
+CONFIG_PRERAM_CBMEM_CONSOLE_SIZE=0x2000
+CONFIG_CMOS_DEFAULT_FILE="src/mainboard/$(MAINBOARDDIR)/cmos.default"
+CONFIG_CMOS_LAYOUT_FILE="src/mainboard/$(MAINBOARDDIR)/cmos.layout"
+CONFIG_BOOT_DEVICE_SPI_FLASH_BUS=0
+
+#
+# Alder Lake P
+#
+# CONFIG_BOARD_CLEVO_NS50PU is not set
+# CONFIG_BOARD_CLEVO_NV40PZ is not set
+
+#
+# Comet Lake U
+#
+# CONFIG_BOARD_CLEVO_L140CU is not set
+
+#
+# Kaby Lake U
+#
+# CONFIG_BOARD_CLEVO_N130WU is not set
+
+#
+# Meteor Lake H
+#
+# CONFIG_BOARD_CLEVO_V540TNX is not set
+# CONFIG_BOARD_CLEVO_V560TNX is not set
+CONFIG_BOARD_CLEVO_V540TU=y
+# CONFIG_BOARD_CLEVO_V560TU is not set
+
+#
+# Tiger Lake U
+#
+# CONFIG_BOARD_CLEVO_L140MU is not set
+# CONFIG_BOARD_CLEVO_NV40MZ is not set
+# CONFIG_BOARD_CLEVO_NS50MU is not set
+CONFIG_MAINBOARD_SMBIOS_PRODUCT_NAME="V54x_6x_TU"
+# CONFIG_CONSOLE_POST is not set
+# CONFIG_USE_PM_ACPI_TIMER is not set
+CONFIG_TPM_PIRQ=0x61
+# CONFIG_SOC_INTEL_CSE_SEND_EOP_EARLY is not set
+CONFIG_VBOOT_FWID_VERSION="$(CONFIG_LOCALVERSION)"
+CONFIG_EC_SYSTEM76_EC_BAT_THRESHOLDS=y
+CONFIG_PXE_ROM_ID="10ec,8168"
+CONFIG_BOARD_CLEVO_MTLH_COMMON=y
+CONFIG_BOARD_CLEVO_V5X0TU_BASE=y
+CONFIG_EC_SYSTEM76_EC_FLASH_SIZE=0x40000
+CONFIG_ECAM_MMCONF_BASE_ADDRESS=0xc0000000
+CONFIG_ECAM_MMCONF_BUS_NUMBER=256
+CONFIG_MEMLAYOUT_LD_FILE="src/arch/x86/memlayout.ld"
+CONFIG_DCACHE_RAM_BASE=0xfef00000
+CONFIG_DCACHE_RAM_SIZE=0xc0000
+CONFIG_C_ENV_BOOTBLOCK_SIZE=0x40000
+CONFIG_DCACHE_BSP_STACK_SIZE=0x80400
+CONFIG_MAX_ACPI_TABLE_SIZE_KB=144
+CONFIG_HAVE_INTEL_FIRMWARE=y
+CONFIG_MRC_SETTINGS_CACHE_SIZE=0x10000
+CONFIG_DRIVERS_INTEL_WIFI=y
+CONFIG_IFD_BIN_PATH="3rdparty/dasharo-blobs/novacustom/v5x0tu/descriptor.bin"
+CONFIG_ME_BIN_PATH="3rdparty/dasharo-blobs/novacustom/v5x0tu/me.bin"
+CONFIG_GBE_BIN_PATH="3rdparty/dasharo-blobs/novacustom/v5x0tu/gbe.bin"
+CONFIG_CONSOLE_CBMEM_BUFFER_SIZE=0x200000
+CONFIG_PCIEXP_DEFAULT_MAX_RESIZABLE_BAR_BITS=36
+CONFIG_CARDBUS_PLUGIN_SUPPORT=y
+CONFIG_SPI_FLASH_DONT_INCLUDE_ALL_DRIVERS=y
+# CONFIG_USE_LEGACY_8254_TIMER is not set
+# CONFIG_DEBUG_SMI is not set
+CONFIG_HAVE_IFD_BIN=y
+CONFIG_PCIEXP_HOTPLUG_BUSES=42
+CONFIG_PCIEXP_HOTPLUG_MEM=0xc200000
+CONFIG_PCIEXP_HOTPLUG_PREFETCH_MEM=0x1c000000
+CONFIG_PS2K_EISAID="PNP0303"
+CONFIG_PS2M_EISAID="PNP0F13"
+CONFIG_TTYS0_BAUD=115200
+CONFIG_POWER_STATE_DEFAULT_ON_AFTER_FAILURE=y
+CONFIG_D3COLD_SUPPORT=y
+CONFIG_PCIEXP_ASPM=y
+CONFIG_PCIEXP_L1_SUB_STATE=y
+CONFIG_PCIEXP_CLK_PM=y
+# CONFIG_DRIVERS_UART_8250IO is not set
+CONFIG_PC_CMOS_BASE_PORT_BANK1=0x72
+CONFIG_FSP_TEMP_RAM_SIZE=0x20000
+CONFIG_EC_GPE_SCI=0x50
+CONFIG_TPM_MEASURED_BOOT=y
+CONFIG_LINUX_COMMAND_LINE="debug console=uart,mmio32,0xfe02c000"
+CONFIG_BOARD_ROMSIZE_KB_32768=y
+# CONFIG_COREBOOT_ROMSIZE_KB_256 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_512 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_1024 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_2048 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_4096 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_5120 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_6144 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_8192 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_10240 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_12288 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_16384 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_24576 is not set
+CONFIG_COREBOOT_ROMSIZE_KB_32768=y
+# CONFIG_COREBOOT_ROMSIZE_KB_65536 is not set
+CONFIG_COREBOOT_ROMSIZE_KB=32768
+CONFIG_ROM_SIZE=0x02000000
+CONFIG_HAVE_POWER_STATE_AFTER_FAILURE=y
+CONFIG_HAVE_POWER_STATE_PREVIOUS_AFTER_FAILURE=y
+CONFIG_POWER_STATE_OFF_AFTER_FAILURE=y
+# CONFIG_POWER_STATE_ON_AFTER_FAILURE is not set
+# CONFIG_POWER_STATE_PREVIOUS_AFTER_FAILURE is not set
+CONFIG_MAINBOARD_POWER_FAILURE_STATE=0
+# end of Mainboard
+
+CONFIG_SYSTEM_TYPE_LAPTOP=y
+
+#
+# Chipset
+#
+
+#
+# SoC
+#
+CONFIG_CHIPSET_DEVICETREE="soc/intel/meteorlake/chipset.cb"
+CONFIG_FSP_M_FILE="$(obj)/Fsp_M.fd"
+CONFIG_FSP_S_FILE="$(obj)/Fsp_S.fd"
+CONFIG_CBFS_MCACHE_SIZE=0x4000
+CONFIG_ROMSTAGE_ADDR=0x2000000
+CONFIG_VERSTAGE_ADDR=0x2000000
+CONFIG_CONSOLE_UART_BASE_ADDRESS=0xfe02c000
+CONFIG_SMM_TSEG_SIZE=0x800000
+CONFIG_SMM_RESERVED_SIZE=0x200000
+CONFIG_SMM_MODULE_STACK_SIZE=0x800
+CONFIG_ACPI_BERT=y
+CONFIG_ACPI_BERT_SIZE=0x10000
+CONFIG_DRIVERS_I2C_DESIGNWARE_CLOCK_MHZ=133
+CONFIG_VBOOT_HASH_BLOCK_SIZE=0x1000
+CONFIG_PRERAM_CBFS_CACHE_SIZE=0x4000
+CONFIG_DOMAIN_RESOURCE_32BIT_LIMIT=0xe0000000
+CONFIG_ACPI_CPU_STRING="CP%02X"
+CONFIG_STACK_SIZE=0x2000
+CONFIG_EXT_BIOS_WIN_BASE=0xf8000000
+CONFIG_EXT_BIOS_WIN_SIZE=0x2000000
+CONFIG_IFD_CHIPSET="mtl"
+CONFIG_IED_REGION_SIZE=0x400000
+CONFIG_MAX_TBT_ROOT_PORTS=4
+CONFIG_MAX_ROOT_PORTS=12
+CONFIG_MAX_PCIE_CLOCK_SRC=9
+CONFIG_PCR_BASE_ADDRESS=0xe0000000
+CONFIG_CPU_BCLK_MHZ=100
+CONFIG_SOC_INTEL_PERFORMANCE_CORE_SCALE_FACTOR=125
+CONFIG_SOC_INTEL_EFFICIENT_CORE_SCALE_FACTOR=100
+CONFIG_SOC_INTEL_COMMON_BLOCK_GSPI_CLOCK_MHZ=120
+CONFIG_CPU_XTAL_HZ=38400000
+CONFIG_SOC_INTEL_COMMON_BLOCK_GSPI_MAX=3
+CONFIG_SOC_INTEL_I2C_DEV_MAX=6
+CONFIG_SOC_INTEL_UART_DEV_MAX=3
+CONFIG_SOC_INTEL_COMMON_LPSS_UART_CLK_M_VAL=0x25a
+CONFIG_SOC_INTEL_COMMON_LPSS_UART_CLK_N_VAL=0x7fff
+CONFIG_FSP_HEADER_PATH="3rdparty/dasharo-blobs/novacustom/v5x0tu/MeteorLakeFspBinPkg/Include/"
+CONFIG_FSP_FD_PATH="3rdparty/dasharo-blobs/novacustom/v5x0tu/MeteorLakeFspBinPkg/Fsp.fd"
+CONFIG_DATA_BUS_WIDTH=128
+CONFIG_DIMMS_PER_CHANNEL=2
+CONFIG_MRC_CHANNEL_WIDTH=16
+CONFIG_BUILDING_WITH_DEBUG_FSP=y
+CONFIG_INTEL_GMA_BCLV_OFFSET=0xc8258
+CONFIG_INTEL_GMA_BCLV_WIDTH=32
+CONFIG_INTEL_GMA_BCLM_OFFSET=0xc8254
+CONFIG_INTEL_GMA_BCLM_WIDTH=32
+CONFIG_FSP_PUBLISH_MBP_HOB=y
+CONFIG_MAX_HECI_DEVICES=6
+CONFIG_BOOTBLOCK_IN_CBFS=y
+CONFIG_HAVE_PAM0_REGISTER=y
+CONFIG_PCIEXP_COMMON_CLOCK=y
+CONFIG_CPU_INTEL_NUM_FIT_ENTRIES=4
+CONFIG_SOC_INTEL_METEORLAKE=y
+CONFIG_SOC_INTEL_METEORLAKE_U_H=y
+CONFIG_SOC_INTEL_METEORLAKE_TCSS_USB4_SUPPORT=y
+CONFIG_METEORLAKE_CAR_ENHANCED_NEM=y
+CONFIG_CPU_MAX_TEMPERATURE=110
+CONFIG_IOE_PCR_BASE_ADDRESS=0x3fff0000000
+CONFIG_SOC_INTEL_USB2_DEV_MAX=10
+CONFIG_SOC_INTEL_USB3_DEV_MAX=2
+CONFIG_SOC_INTEL_METEORLAKE_DEBUG_CONSENT=0
+CONFIG_SOC_INTEL_GFX_FRAMEBUFFER_OFFSET=0x800000
+CONFIG_PCIE_LTR_MAX_SNOOP_LATENCY=0x100f
+CONFIG_PCIE_LTR_MAX_NO_SNOOP_LATENCY=0x100f
+CONFIG_IOE_DIE_CLOCK_START=6
+CONFIG_SOC_INTEL_CSE_FW_PARTITION_CMOS_OFFSET=161
+CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_SLP_S0_FREQ_HZ=0x2005
+CONFIG_SOC_PHYSICAL_ADDRESS_WIDTH=42
+CONFIG_INTEL_TME=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_P2SB=y
+CONFIG_FIXED_SMBUS_IO_BASE=0xefa0
+CONFIG_CBFS_CACHE_ALIGN=8
+CONFIG_SOC_INTEL_COMMON=y
+
+#
+# Intel SoC Common Code for IP blocks
+#
+CONFIG_SOC_INTEL_COMMON_BLOCK=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_GPIO=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_LPIT=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_PEP=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_PEP_LPM_REQ=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_CRASHLOG=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_CPPC=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_CPU_HYBRID=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_CHIP_CONFIG=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_CNVI=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_CPU=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_CPU_MPINIT=y
+CONFIG_USE_FSP_FEATURE_PROGRAM_ON_APS=y
+# CONFIG_USE_COREBOOT_MP_INIT is not set
+CONFIG_SOC_INTEL_COMMON_BLOCK_CPU_SMMRELOCATE=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_CAR=y
+CONFIG_INTEL_CAR_NEM_ENHANCED=y
+CONFIG_CAR_HAS_SF_MASKS=y
+CONFIG_COS_MAPPED_TO_MSB=y
+CONFIG_CAR_HAS_L3_PROTECTED_WAYS=y
+CONFIG_USE_INTEL_FSP_TO_CALL_COREBOOT_PUBLISH_MP_PPI=y
+CONFIG_CPU_SUPPORTS_INTEL_TME=y
+CONFIG_TME_KEY_REGENERATION_ON_WARM_BOOT=y
+CONFIG_CPU_SUPPORTS_PM_TIMER_EMULATION=y
+CONFIG_HAVE_HYPERTHREADING=y
+CONFIG_FSP_HYPERTHREADING=y
+CONFIG_INTEL_KEYLOCKER=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE=2
+# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_MAX is not set
+# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_256MB is not set
+# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_128MB is not set
+# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_64MB is not set
+# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_32MB is not set
+# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_16MB is not set
+# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_8MB is not set
+# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_4MB is not set
+CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_2MB=y
+# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_0MB is not set
+CONFIG_SOC_INTEL_COMMON_BLOCK_CSE=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_HECI1_DISABLE_USING_PMC_IPC=y
+CONFIG_SOC_INTEL_CSE_SEND_EOP_LATE=y
+CONFIG_SOC_INTEL_CSE_FMAP_NAME="SI_ME"
+CONFIG_SOC_INTEL_CSE_RW_A_FMAP_NAME="ME_RW_A"
+CONFIG_SOC_INTEL_CSE_RW_B_FMAP_NAME="ME_RW_B"
+CONFIG_SOC_INTEL_CSE_RW_CBFS_NAME="me_rw"
+CONFIG_SOC_INTEL_CSE_RW_HASH_CBFS_NAME="me_rw.hash"
+CONFIG_SOC_INTEL_CSE_RW_VERSION_CBFS_NAME="me_rw.version"
+CONFIG_SOC_INTEL_CSE_RW_FILE=""
+CONFIG_SOC_INTEL_CSE_RW_VERSION=""
+CONFIG_SOC_INTEL_CSE_SET_EOP=y
+CONFIG_SOC_INTEL_CSE_IOM_CBFS_NAME="cse_iom"
+CONFIG_SOC_INTEL_CSE_IOM_CBFS_FILE=""
+CONFIG_SOC_INTEL_CSE_NPHY_CBFS_NAME="cse_nphy"
+CONFIG_SOC_INTEL_CSE_NPHY_CBFS_FILE=""
+CONFIG_SOC_INTEL_CSE_PRE_CPU_RESET_TELEMETRY=y
+CONFIG_SOC_INTEL_CSE_PRE_CPU_RESET_TELEMETRY_V2=y
+CONFIG_SOC_INTEL_CSE_HAVE_SPEC_SUPPORT=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_ME_SPEC_18=y
+CONFIG_ME_SPEC=18
+CONFIG_SOC_INTEL_COMMON_BLOCK_DSP=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_DTT=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_FAST_SPI=y
+CONFIG_FAST_SPI_DISABLE_WRITE_STATUS=y
+CONFIG_FAST_SPI_SUPPORTS_EXT_BIOS_WINDOW=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_GPIO=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_GPIO_ITSS_POL_CFG=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_GPIO_IOSTANDBY=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_GPIO_DUAL_ROUTE_SUPPORT=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_GPIO_LOCK_USING_PCR=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_GPIO_PMODE_4BITS=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_GPMR=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_GRAPHICS=y
+# CONFIG_SOC_INTEL_DISABLE_IGD is not set
+CONFIG_SOC_INTEL_GFX_NON_PREFETCHABLE_MMIO=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_GSPI=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_GSPI_VERSION_2=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_HDA=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_HDA_VERB=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_I2C=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_IOC=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_IPU=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_IRQ=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_ITSS=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_LPC=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_LPC_MIRROR_TO_GPMR=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_LPSS=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_MEMINIT=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_BASE_P2SB=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_IOE_P2SB=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_PCIE=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_PCIE_RTD3=y
+CONFIG_PCIE_CLOCK_CONTROL_THROUGH_P2SB=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_PCR=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_PMC=y
+CONFIG_SOC_INTEL_MEM_MAPPED_PM_CONFIGURATION=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_PMC_EPOC=y
+CONFIG_PMC_IPC_ACPI_INTERFACE=y
+CONFIG_PMC_GLOBAL_RESET_ENABLE_LOCK=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_POWER_LIMIT=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_RTC=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_SATA=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_SMBUS=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_TCO=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_TCO_ENABLE_THROUGH_SMBUS=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_SMM=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_SMM_IO_TRAP=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_SMM_TCO_ENABLE=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_SMM_S5_DELAY_MS=0
+CONFIG_SOC_INTEL_COMMON_BLOCK_SPI=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_SA=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_TCSS=y
+# CONFIG_TCSS_HAS_USBC_OPS is not set
+CONFIG_SOC_INTEL_COMMON_BLOCK_THERMAL=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_THERMAL_BEHIND_PMC=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_TIMER=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_UART=y
+CONFIG_INTEL_LPSS_UART_FOR_CONSOLE=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_USB4=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_USB4_PCIE=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_USB4_XHCI=y
+CONFIG_SOC_INTEL_ENABLE_USB4_PCIE_RESOURCES=y
+# CONFIG_FIRMWARE_CONNECTION_MANAGER is not set
+CONFIG_SOFTWARE_CONNECTION_MANAGER=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_VTD=y
+CONFIG_ENABLE_EARLY_DMA_PROTECTION=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_XDCI=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_XHCI=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_XHCI_ELOG=y
+
+#
+# Intel SoC Common PCH Code
+#
+CONFIG_SOC_INTEL_COMMON_PCH_CLIENT=y
+CONFIG_SOC_INTEL_COMMON_PCH_BASE=y
+CONFIG_SOC_INTEL_COMMON_PCH_LOCKDOWN=y
+CONFIG_PCH_SPECIFIC_BASE_OPTIONS=y
+CONFIG_PCH_SPECIFIC_DISCRETE_OPTIONS=y
+CONFIG_PCH_SPECIFIC_CLIENT_OPTIONS=y
+
+#
+# Intel SoC Common coreboot stages and non-IP blocks
+#
+CONFIG_SOC_INTEL_COMMON_BASECODE=y
+CONFIG_SOC_INTEL_COMMON_RESET=y
+CONFIG_SOC_INTEL_COMMON_ACPI_WAKE_SOURCE=y
+CONFIG_PAVP=y
+# CONFIG_SOC_INTEL_DEBUG_CONSENT is not set
+CONFIG_HAVE_INTEL_COMPLIANCE_TEST_MODE=y
+# CONFIG_SOC_INTEL_COMPLIANCE_TEST_MODE is not set
+CONFIG_SOC_INTEL_CRASHLOG=y
+CONFIG_SOC_INTEL_IOE_DIE_SUPPORT=y
+
+#
+# CPU
+#
+CONFIG_CPU_INTEL_FIRMWARE_INTERFACE_TABLE=y
+CONFIG_CPU_INTEL_COMMON=y
+CONFIG_ENABLE_VMX=y
+CONFIG_SET_IA32_FC_LOCK_BIT=y
+CONFIG_SET_MSR_AESNI_LOCK_BIT=y
+CONFIG_CPU_INTEL_COMMON_VOLTAGE=y
+CONFIG_CPU_INTEL_COMMON_SMM=y
+CONFIG_PARALLEL_MP=y
+CONFIG_PARALLEL_MP_AP_WORK=y
+CONFIG_DEFAULT_X2APIC_LATE_WORKAROUND=y
+# CONFIG_XAPIC_ONLY is not set
+# CONFIG_X2APIC_ONLY is not set
+# CONFIG_X2APIC_RUNTIME is not set
+CONFIG_X2APIC_LATE_WORKAROUND=y
+CONFIG_UDELAY_TSC=y
+CONFIG_TSC_MONOTONIC_TIMER=y
+CONFIG_X86_CLFLUSH_CAR=y
+CONFIG_HAVE_SMI_HANDLER=y
+CONFIG_SMM_TSEG=y
+CONFIG_SMM_PCI_RESOURCE_STORE_NUM_SLOTS=8
+CONFIG_X86_INIT_NEED_1_SIPI=y
+CONFIG_AP_STACK_SIZE=0x800
+CONFIG_SMP=y
+CONFIG_SSE=y
+CONFIG_SSE2=y
+CONFIG_SUPPORT_CPU_UCODE_IN_CBFS=y
+CONFIG_USE_CPU_MICROCODE_CBFS_BINS=y
+CONFIG_CPU_MICROCODE_CBFS_DEFAULT_BINS=y
+# CONFIG_CPU_MICROCODE_CBFS_EXTERNAL_BINS is not set
+# CONFIG_CPU_MICROCODE_CBFS_EXTERNAL_HEADER is not set
+# CONFIG_CPU_MICROCODE_CBFS_NONE is not set
+
+#
+# Northbridge
+#
+
+#
+# Southbridge
+#
+CONFIG_PCIEXP_HOTPLUG=y
+CONFIG_INTEL_DESCRIPTOR_MODE_REQUIRED=y
+CONFIG_SOUTHBRIDGE_INTEL_COMMON_SMBUS=y
+CONFIG_SOUTHBRIDGE_INTEL_COMMON_PIRQ_ACPI_GEN=y
+CONFIG_INTEL_DESCRIPTOR_MODE_CAPABLE=y
+# CONFIG_VALIDATE_INTEL_DESCRIPTOR is not set
+CONFIG_FIXED_RCBA_MMIO_BASE=0xfed1c000
+CONFIG_RCBA_LENGTH=0x4000
+
+#
+# Super I/O
+#
+
+#
+# Embedded Controllers
+#
+CONFIG_EC_ACPI=y
+CONFIG_EC_SYSTEM76_EC=y
+# CONFIG_EC_SYSTEM76_EC_UPDATE is not set
+
+#
+# Intel Firmware
+#
+# CONFIG_IFDTOOL_DISABLE_ME is not set
+CONFIG_HAVE_ME_BIN=y
+# CONFIG_STITCH_ME_BIN is not set
+# CONFIG_ME_REGION_ALLOW_CPU_READ_ACCESS is not set
+CONFIG_HAVE_INTEL_ME_HAP=y
+# CONFIG_INTEL_ME_DISABLED_HECI is not set
+# CONFIG_INTEL_ME_DISABLED_HAP is not set
+CONFIG_INTEL_ME_ENABLED=y
+CONFIG_INTEL_ME_DEFAULT_STATE=0
+CONFIG_MAINBOARD_USES_IFD_GBE_REGION=y
+CONFIG_HAVE_GBE_BIN=y
+# CONFIG_DO_NOT_TOUCH_DESCRIPTOR_REGION is not set
+# CONFIG_LOCK_MANAGEMENT_ENGINE is not set
+CONFIG_UNLOCK_FLASH_REGIONS=y
+CONFIG_BIOS_VENDOR="3mdeb"
+
+#
+# Dasharo
+#
+
+#
+# Dasharo Configuration
+#
+# CONFIG_DASHARO_PREFER_S3_SLEEP is not set
+CONFIG_DASHARO_FIRMWARE_UPDATE_MODE=y
+# end of Dasharo Configuration
+
+CONFIG_UDK_BASE=y
+# CONFIG_UDK_202005_BINDING is not set
+CONFIG_UDK_202302_BINDING=y
+CONFIG_UDK_2013_VERSION=2013
+CONFIG_UDK_2017_VERSION=2017
+CONFIG_UDK_202005_VERSION=202005
+CONFIG_UDK_202302_VERSION=202302
+CONFIG_UDK_VERSION=202302
+CONFIG_ARCH_X86=y
+CONFIG_ARCH_BOOTBLOCK_X86_32=y
+CONFIG_ARCH_VERSTAGE_X86_32=y
+CONFIG_ARCH_ROMSTAGE_X86_32=y
+CONFIG_ARCH_POSTCAR_X86_32=y
+CONFIG_ARCH_RAMSTAGE_X86_32=y
+CONFIG_ARCH_ALL_STAGES_X86_32=y
+CONFIG_RESERVED_PHYSICAL_ADDRESS_BITS_SUPPORT=y
+CONFIG_X86_CUSTOM_BOOTMEDIA=y
+CONFIG_POSTRAM_CBFS_CACHE_IN_BSS=y
+CONFIG_RAMSTAGE_CBFS_CACHE_SIZE=0x4000
+CONFIG_PC80_SYSTEM=y
+CONFIG_HAVE_CMOS_DEFAULT=y
+CONFIG_POSTCAR_STAGE=y
+CONFIG_BOOTBLOCK_SIMPLE=y
+# CONFIG_BOOTBLOCK_NORMAL is not set
+CONFIG_COLLECT_TIMESTAMPS_TSC=y
+CONFIG_IDT_IN_EVERY_STAGE=y
+CONFIG_HAVE_CF9_RESET=y
+CONFIG_DEBUG_HW_BREAKPOINTS=y
+CONFIG_DEBUG_HW_BREAKPOINTS_IN_ALL_STAGES=y
+CONFIG_DEBUG_NULL_DEREF_BREAKPOINTS=y
+CONFIG_DEBUG_NULL_DEREF_BREAKPOINTS_IN_ALL_STAGES=y
+# CONFIG_DUMP_SMBIOS_TYPE17 is not set
+# end of Chipset
+
+#
+# Devices
+#
+CONFIG_HAVE_LINEAR_FRAMEBUFFER=y
+CONFIG_HAVE_FSP_GOP=y
+# CONFIG_VGA_ROM_RUN is not set
+CONFIG_RUN_FSP_GOP=y
+# CONFIG_NO_GFX_INIT is not set
+CONFIG_NO_EARLY_GFX_INIT=y
+
+#
+# Display
+#
+CONFIG_GENERIC_LINEAR_FRAMEBUFFER=y
+CONFIG_LINEAR_FRAMEBUFFER=y
+CONFIG_BOOTSPLASH=y
+# end of Display
+
+CONFIG_PCI=y
+CONFIG_ECAM_MMCONF_SUPPORT=y
+CONFIG_PCIX_PLUGIN_SUPPORT=y
+CONFIG_AZALIA_HDA_CODEC_SUPPORT=y
+CONFIG_AZALIA_LOCK_DOWN_R_WO_GCAP=y
+CONFIG_PCIEXP_PLUGIN_SUPPORT=y
+CONFIG_ECAM_MMCONF_LENGTH=0x10000000
+CONFIG_PCI_ALLOW_BUS_MASTER=y
+CONFIG_PCI_SET_BUS_MASTER_PCI_BRIDGES=y
+CONFIG_PCI_ALLOW_BUS_MASTER_ANY_DEVICE=y
+CONFIG_PCIEXP_SUPPORT_RESIZABLE_BARS=y
+CONFIG_PCIEXP_LANE_ERR_STAT_CLEAR=y
+CONFIG_PCIEXP_HOTPLUG_PREFETCH_MEM_BELOW_4G=y
+CONFIG_PCIEXP_HOTPLUG_IO=0x800
+# CONFIG_EARLY_PCI_BRIDGE is not set
+CONFIG_SUBSYSTEM_VENDOR_ID=0x0000
+CONFIG_SUBSYSTEM_DEVICE_ID=0x0000
+CONFIG_INTEL_GMA_HAVE_VBT=y
+CONFIG_INTEL_GMA_ADD_VBT=y
+# CONFIG_SOFTWARE_I2C is not set
+CONFIG_I2C_TRANSFER_TIMEOUT_US=500000
+# CONFIG_RESOURCE_ALLOCATION_TOP_DOWN is not set
+# end of Devices
+
+#
+# Generic Drivers
+#
+CONFIG_CRB_TPM_BASE_ADDRESS=0xfed40000
+# CONFIG_DRIVERS_EFI_VARIABLE_STORE is not set
+# CONFIG_ELOG is not set
+CONFIG_CACHE_MRC_SETTINGS=y
+CONFIG_MRC_SETTINGS_PROTECT=y
+CONFIG_MRC_CACHE_USING_MRC_VERSION=y
+# CONFIG_SMMSTORE is not set
+CONFIG_SPI_FLASH=y
+CONFIG_BOOT_DEVICE_SPI_FLASH_RW_NOMMAP=y
+CONFIG_BOOT_DEVICE_SPI_FLASH_RW_NOMMAP_EARLY=y
+# CONFIG_SPI_FLASH_NO_FAST_READ is not set
+CONFIG_TPM_INIT_RAMSTAGE=y
+CONFIG_TPM_PPI=y
+CONFIG_DRIVERS_UART=y
+CONFIG_NO_UART_ON_SUPERIO=y
+CONFIG_DRIVERS_UART_8250MEM=y
+CONFIG_DRIVERS_UART_8250MEM_32=y
+# CONFIG_VPD is not set
+CONFIG_DRIVERS_GENERIC_BAYHUB_LV2=y
+# CONFIG_DRIVERS_GENERIC_CBFS_SERIAL is not set
+# CONFIG_DRIVERS_GENERIC_CBFS_UUID is not set
+# CONFIG_DRIVERS_GENESYSLOGIC_GL9750 is not set
+# CONFIG_DRIVERS_GENESYSLOGIC_GL9755 is not set
+# CONFIG_DRIVERS_GENESYSLOGIC_GL9763E is not set
+CONFIG_DRIVERS_I2C_DESIGNWARE=y
+CONFIG_DRIVERS_I2C_GENERIC=y
+CONFIG_DRIVERS_I2C_HID=y
+# CONFIG_DRIVERS_I2C_MAX98396 is not set
+# CONFIG_DISPLAY_HOBS is not set
+# CONFIG_DISPLAY_UPD_DATA is not set
+# CONFIG_BMP_LOGO is not set
+CONFIG_PLATFORM_USES_FSP2_0=y
+CONFIG_PLATFORM_USES_FSP2_1=y
+CONFIG_PLATFORM_USES_FSP2_2=y
+CONFIG_PLATFORM_USES_FSP2_3=y
+CONFIG_PLATFORM_USES_FSP2_X86_32=y
+CONFIG_ADD_FSP_BINARIES=y
+CONFIG_FSP_T_LOCATION=0xfffe0000
+CONFIG_FSP_S_CBFS="fsps.bin"
+CONFIG_FSP_M_CBFS="fspm.bin"
+CONFIG_FSP_FULL_FD=y
+CONFIG_FSP_T_RESERVED_SIZE=0x0
+CONFIG_FSP_M_XIP=y
+CONFIG_FSP_USES_CB_STACK=y
+CONFIG_HAVE_FSP_LOGO_SUPPORT=y
+CONFIG_FSP_COMPRESS_FSP_S_LZ4=y
+CONFIG_FSP_STATUS_GLOBAL_RESET_REQUIRED_3=y
+CONFIG_FSP_STATUS_GLOBAL_RESET=0x40000003
+CONFIG_SOC_INTEL_COMMON_FSP_RESET=y
+CONFIG_FSPS_HAS_ARCH_UPD=y
+CONFIG_FSPS_USE_MULTI_PHASE_INIT=y
+CONFIG_FSP_USES_CB_DEBUG_EVENT_HANDLER=y
+# CONFIG_DISPLAY_FSP_TIMESTAMPS is not set
+CONFIG_FSP_ENABLE_SERIAL_DEBUG=y
+CONFIG_INTEL_GMA_ACPI=y
+CONFIG_VBT_CBFS_COMPRESSION_LZMA=y
+# CONFIG_VBT_CBFS_COMPRESSION_LZ4 is not set
+# CONFIG_VBT_CBFS_COMPRESSION_NONE is not set
+CONFIG_VBT_CBFS_COMPRESSION_ALGORITHM="lzma"
+CONFIG_INTEL_GMA_OPREGION_2_1=y
+CONFIG_INTEL_GMA_VERSION_2=y
+CONFIG_DRIVERS_INTEL_PMC=y
+# CONFIG_DRIVERS_NXP_UWB_SR1XX is not set
+# CONFIG_DRIVERS_PS2_KEYBOARD is not set
+CONFIG_DRIVERS_MC146818=y
+CONFIG_USE_PC_CMOS_ALTCENTURY=y
+CONFIG_PC_CMOS_BASE_PORT_BANK0=0x70
+CONFIG_MEMORY_MAPPED_TPM=y
+CONFIG_TPM_TIS_BASE_ADDRESS=0xfed40000
+# CONFIG_DRIVERS_SIL_3114 is not set
+CONFIG_DRIVERS_USB_ACPI=y
+CONFIG_DRIVERS_WIFI_GENERIC=y
+CONFIG_DRIVERS_MTK_WIFI=y
+CONFIG_MP_SERVICES_PPI=y
+CONFIG_MP_SERVICES_PPI_V2=y
+CONFIG_DRIVERS_INTEL_USB4_RETIMER=y
+# end of Generic Drivers
+
+#
+# Security
+#
+
+#
+# CBFS verification
+#
+# CONFIG_CBFS_VERIFICATION is not set
+# end of CBFS verification
+
+#
+# Verified Boot (vboot)
+#
+CONFIG_VBOOT_LIB=y
+# end of Verified Boot (vboot)
+
+#
+# Trusted Platform Module
+#
+# CONFIG_TPM1 is not set
+CONFIG_TPM2=y
+CONFIG_TPM=y
+CONFIG_MAINBOARD_HAS_TPM2=y
+# CONFIG_DEBUG_TPM is not set
+CONFIG_TPM_RDRESP_NEED_DELAY=y
+# CONFIG_TPM_LOG_CB is not set
+CONFIG_TPM_LOG_TPM2=y
+# CONFIG_TPM_HASH_SHA1 is not set
+CONFIG_TPM_HASH_SHA256=y
+# CONFIG_TPM_HASH_SHA384 is not set
+# CONFIG_TPM_HASH_SHA512 is not set
+CONFIG_TPM_MEASURED_BOOT_RUNTIME_DATA=""
+CONFIG_PCR_BOOT_MODE=1
+CONFIG_PCR_HWID=1
+CONFIG_PCR_SRTM=2
+CONFIG_PCR_FW_VER=10
+CONFIG_PCR_RUNTIME_DATA=3
+# end of Trusted Platform Module
+
+#
+# Memory initialization
+#
+CONFIG_PLATFORM_HAS_DRAM_CLEAR=y
+# CONFIG_SECURITY_CLEAR_DRAM_ON_REGULAR_BOOT is not set
+# end of Memory initialization
+
+# CONFIG_INTEL_TXT is not set
+# CONFIG_STM is not set
+# CONFIG_INTEL_CBNT_SUPPORT is not set
+CONFIG_BOOTMEDIA_LOCK_NONE=y
+# CONFIG_BOOTMEDIA_LOCK_CONTROLLER is not set
+# CONFIG_BOOTMEDIA_LOCK_CHIP is not set
+# CONFIG_BOOTMEDIA_SMM_BWP is not set
+# end of Security
+
+CONFIG_ACPI_HAVE_PCAT_8259=y
+CONFIG_ACPI_INTEL_HARDWARE_SLEEP_VALUES=y
+CONFIG_ACPI_SOC_NVS=y
+CONFIG_ACPI_CUSTOM_MADT=y
+CONFIG_ACPI_COMMON_MADT_IOAPIC=y
+CONFIG_HAVE_ACPI_TABLES=y
+CONFIG_ACPI_LPIT=y
+CONFIG_BOOT_DEVICE_SPI_FLASH=y
+CONFIG_BOOT_DEVICE_MEMORY_MAPPED=y
+CONFIG_BOOT_DEVICE_SUPPORTS_WRITES=y
+CONFIG_RTC=y
+CONFIG_HEAP_SIZE=0x100000
+
+#
+# Console
+#
+CONFIG_BOOTBLOCK_CONSOLE=y
+CONFIG_POSTCAR_CONSOLE=y
+CONFIG_SQUELCH_EARLY_SMP=y
+CONFIG_FIXED_UART_FOR_CONSOLE=y
+
+#
+# memory mapped, 8250-compatible
+#
+CONFIG_TTYS0_BASE=0x3f8
+# CONFIG_CONSOLE_SERIAL_921600 is not set
+# CONFIG_CONSOLE_SERIAL_460800 is not set
+# CONFIG_CONSOLE_SERIAL_230400 is not set
+CONFIG_CONSOLE_SERIAL_115200=y
+# CONFIG_CONSOLE_SERIAL_57600 is not set
+# CONFIG_CONSOLE_SERIAL_38400 is not set
+# CONFIG_CONSOLE_SERIAL_19200 is not set
+# CONFIG_CONSOLE_SERIAL_9600 is not set
+CONFIG_TTYS0_LCS=3
+# CONFIG_SPKMODEM is not set
+# CONFIG_CONSOLE_NE2K is not set
+CONFIG_CONSOLE_CBMEM=y
+# CONFIG_CONSOLE_SPI_FLASH is not set
+# CONFIG_CONSOLE_I2C_SMBUS is not set
+# CONFIG_CONSOLE_SYSTEM76_EC is not set
+# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_8 is not set
+CONFIG_DEFAULT_CONSOLE_LOGLEVEL_7=y
+# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_6 is not set
+# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_5 is not set
+# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_4 is not set
+# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_3 is not set
+# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_2 is not set
+# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_1 is not set
+# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_0 is not set
+CONFIG_DEFAULT_CONSOLE_LOGLEVEL=7
+CONFIG_CONSOLE_USE_LOGLEVEL_PREFIX=y
+CONFIG_CONSOLE_USE_ANSI_ESCAPES=y
+# CONFIG_CMOS_POST is not set
+CONFIG_HWBASE_DEBUG_CB=y
+# end of Console
+
+CONFIG_ACPI_S1_NOT_SUPPORTED=y
+CONFIG_HAVE_ACPI_RESUME=y
+CONFIG_RESUME_PATH_SAME_AS_BOOT=y
+CONFIG_HAVE_MONOTONIC_TIMER=y
+CONFIG_HAVE_OPTION_TABLE=y
+CONFIG_IOAPIC=y
+
+#
+# System tables
+#
+CONFIG_GENERATE_SMBIOS_TABLES=y
+CONFIG_MAINBOARD_SERIAL_NUMBER="123456789"
+# end of System tables
+
+#
+# Payload
+#
+# CONFIG_PAYLOAD_NONE is not set
+# CONFIG_PAYLOAD_ELF is not set
+# CONFIG_PAYLOAD_BOOTBOOT is not set
+# CONFIG_PAYLOAD_FILO is not set
+# CONFIG_PAYLOAD_GRUB2 is not set
+# CONFIG_PAYLOAD_SEAGRUB is not set
+# CONFIG_PAYLOAD_LINUXBOOT is not set
+# CONFIG_PAYLOAD_SEABIOS is not set
+# CONFIG_PAYLOAD_UBOOT is not set
+# CONFIG_PAYLOAD_EDK2 is not set
+CONFIG_PAYLOAD_LINUX=y
+CONFIG_PAYLOAD_FILE="@BOARD_BUILD_DIR@/bzImage"
+CONFIG_PAYLOAD_OPTIONS=""
+# CONFIG_PXE is not set
+CONFIG_LINUX_INITRD="@BOARD_BUILD_DIR@/initrd.cpio.xz"
+CONFIG_COMPRESS_SECONDARY_PAYLOAD=y
+
+#
+# Secondary Payloads
+#
+# CONFIG_COREINFO_SECONDARY_PAYLOAD is not set
+# CONFIG_GRUB2_SECONDARY_PAYLOAD is not set
+# CONFIG_MEMTEST_SECONDARY_PAYLOAD is not set
+# CONFIG_NVRAMCUI_SECONDARY_PAYLOAD is not set
+# CONFIG_SEABIOS_SECONDARY_PAYLOAD is not set
+# CONFIG_TINT_SECONDARY_PAYLOAD is not set
+# CONFIG_COREDOOM_SECONDARY_PAYLOAD is not set
+# end of Secondary Payloads
+# end of Payload
+
+#
+# Debugging
+#
+
+#
+# CPU Debug Settings
+#
+# CONFIG_DISPLAY_MTRRS is not set
+
+#
+# Vendorcode Debug Settings
+#
+
+#
+# BLOB Debug Settings
+#
+# CONFIG_DISPLAY_FSP_CALLS_AND_STATUS is not set
+# CONFIG_DISPLAY_FSP_HEADER is not set
+# CONFIG_VERIFY_HOBS is not set
+# CONFIG_DISPLAY_FSP_VERSION_INFO is not set
+CONFIG_DISPLAY_FSP_VERSION_INFO_2=y
+# CONFIG_ENABLE_FSP_ERROR_INFO is not set
+CONFIG_HAVE_GPIO_SNAPSHOT_VERIFY_SUPPORT=y
+# CONFIG_CHECK_GPIO_CONFIG_CHANGES is not set
+
+#
+# General Debug Settings
+#
+# CONFIG_GDB_STUB is not set
+# CONFIG_FATAL_ASSERTS is not set
+CONFIG_HAVE_DEBUG_GPIO=y
+# CONFIG_DEBUG_GPIO is not set
+# CONFIG_DEBUG_CBFS is not set
+CONFIG_HAVE_DEBUG_RAM_SETUP=y
+# CONFIG_DEBUG_RAM_SETUP is not set
+CONFIG_HAVE_DEBUG_SMBUS=y
+# CONFIG_DEBUG_SMBUS is not set
+# CONFIG_DEBUG_MALLOC is not set
+# CONFIG_DEBUG_CONSOLE_INIT is not set
+# CONFIG_DEBUG_SPI_FLASH is not set
+# CONFIG_DEBUG_BOOT_STATE is not set
+# CONFIG_DEBUG_ADA_CODE is not set
+CONFIG_HAVE_EM100_SUPPORT=y
+# CONFIG_EM100 is not set
+# CONFIG_DEBUG_ACPICA_COMPATIBLE is not set
+# end of Debugging
+
+CONFIG_SPD_READ_BY_WORD=y
+CONFIG_DECOMPRESS_OFAST=y
+CONFIG_WARNINGS_ARE_ERRORS=y
+CONFIG_MAX_REBOOT_CNT=3
+CONFIG_RELOCATABLE_MODULES=y
+CONFIG_GENERIC_GPIO_LIB=y
+CONFIG_HAVE_BOOTBLOCK=y
+CONFIG_HAVE_ROMSTAGE=y
+CONFIG_HAVE_RAMSTAGE=y
diff --git a/config/linux-nitropad-x.config b/config/linux-nitropad-x.config
index 021e9ba3..73bab708 100644
--- a/config/linux-nitropad-x.config
+++ b/config/linux-nitropad-x.config
@@ -1,18 +1,19 @@
 #
 # Automatically generated file; DO NOT EDIT.
-# Linux/x86 6.1.8 Kernel Configuration
+# Linux/x86 6.11.9 Kernel Configuration
 #
-CONFIG_CC_VERSION_TEXT="x86_64-linux-musl-gcc (GCC) 8.3.0"
+CONFIG_CC_VERSION_TEXT="x86_64-linux-musl-gcc (GCC) 9.4.0"
 CONFIG_CC_IS_GCC=y
-CONFIG_GCC_VERSION=80300
+CONFIG_GCC_VERSION=90400
 CONFIG_CLANG_VERSION=0
 CONFIG_AS_IS_GNU=y
-CONFIG_AS_VERSION=23200
+CONFIG_AS_VERSION=23301
 CONFIG_LD_IS_BFD=y
-CONFIG_LD_VERSION=23200
+CONFIG_LD_VERSION=23301
 CONFIG_LLD_VERSION=0
 CONFIG_CC_CAN_LINK=y
 CONFIG_CC_CAN_LINK_STATIC=y
+CONFIG_GCC_ASM_GOTO_OUTPUT_BROKEN=y
 CONFIG_CC_HAS_ASM_INLINE=y
 CONFIG_CC_HAS_NO_PROFILE_FN_ATTR=y
 CONFIG_PAHOLE_VERSION=0
@@ -65,7 +66,6 @@ CONFIG_HARDIRQS_SW_RESEND=y
 CONFIG_IRQ_DOMAIN=y
 CONFIG_IRQ_DOMAIN_HIERARCHY=y
 CONFIG_GENERIC_MSI_IRQ=y
-CONFIG_GENERIC_MSI_IRQ_DOMAIN=y
 CONFIG_IRQ_MSI_IOMMU=y
 CONFIG_GENERIC_IRQ_MATRIX_ALLOCATOR=y
 CONFIG_GENERIC_IRQ_RESERVATION_MODE=y
@@ -79,6 +79,7 @@ CONFIG_CLOCKSOURCE_VALIDATE_LAST_CYCLE=y
 CONFIG_GENERIC_TIME_VSYSCALL=y
 CONFIG_GENERIC_CLOCKEVENTS=y
 CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
+CONFIG_GENERIC_CLOCKEVENTS_BROADCAST_IDLE=y
 CONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST=y
 CONFIG_GENERIC_CMOS_UPDATE=y
 CONFIG_HAVE_POSIX_CPU_TIMERS_TASK_WORK=y
@@ -133,7 +134,6 @@ CONFIG_TICK_CPU_ACCOUNTING=y
 #
 CONFIG_TREE_RCU=y
 # CONFIG_RCU_EXPERT is not set
-CONFIG_SRCU=y
 CONFIG_TREE_SRCU=y
 CONFIG_RCU_STALL_COMMON=y
 CONFIG_RCU_NEED_SEGCBLIST=y
@@ -143,7 +143,6 @@ CONFIG_RCU_NEED_SEGCBLIST=y
 # CONFIG_IKHEADERS is not set
 CONFIG_LOG_BUF_SHIFT=18
 CONFIG_LOG_CPU_MAX_BUF_SHIFT=12
-CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13
 CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
 
 #
@@ -156,13 +155,14 @@ CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y
 CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH=y
 CONFIG_CC_HAS_INT128=y
 CONFIG_CC_IMPLICIT_FALLTHROUGH="-Wimplicit-fallthrough=5"
-CONFIG_GCC11_NO_ARRAY_BOUNDS=y
-CONFIG_GCC12_NO_ARRAY_BOUNDS=y
+CONFIG_GCC10_NO_ARRAY_BOUNDS=y
+CONFIG_CC_NO_ARRAY_BOUNDS=y
+CONFIG_GCC_NO_STRINGOP_OVERFLOW=y
+CONFIG_CC_NO_STRINGOP_OVERFLOW=y
 CONFIG_ARCH_SUPPORTS_INT128=y
 # CONFIG_CGROUPS is not set
 # CONFIG_CHECKPOINT_RESTORE is not set
 # CONFIG_SCHED_AUTOGROUP is not set
-# CONFIG_SYSFS_DEPRECATED is not set
 # CONFIG_RELAY is not set
 CONFIG_BLK_DEV_INITRD=y
 CONFIG_INITRAMFS_SOURCE="@BLOB_DIR@/dev.cpio"
@@ -182,6 +182,7 @@ CONFIG_INITRAMFS_COMPRESSION_XZ=y
 # CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE is not set
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 CONFIG_LD_ORPHAN_WARN=y
+CONFIG_LD_ORPHAN_WARN_LEVEL="warn"
 CONFIG_SYSCTL=y
 CONFIG_SYSCTL_EXCEPTION_TRACE=y
 CONFIG_HAVE_PCSPKR_PLATFORM=y
@@ -194,7 +195,7 @@ CONFIG_POSIX_TIMERS=y
 CONFIG_PRINTK=y
 CONFIG_BUG=y
 CONFIG_PCSPKR_PLATFORM=y
-# CONFIG_BASE_FULL is not set
+# CONFIG_BASE_SMALL is not set
 CONFIG_FUTEX=y
 CONFIG_FUTEX_PI=y
 CONFIG_EPOLL=y
@@ -206,13 +207,13 @@ CONFIG_SHMEM=y
 CONFIG_IO_URING=y
 # CONFIG_ADVISE_SYSCALLS is not set
 CONFIG_MEMBARRIER=y
-# CONFIG_KALLSYMS is not set
-CONFIG_ARCH_HAS_MEMBARRIER_SYNC_CORE=y
 CONFIG_KCMP=y
 # CONFIG_RSEQ is not set
-CONFIG_EMBEDDED=y
-CONFIG_HAVE_PERF_EVENTS=y
+CONFIG_CACHESTAT_SYSCALL=y
 # CONFIG_PC104 is not set
+# CONFIG_KALLSYMS is not set
+CONFIG_ARCH_HAS_MEMBARRIER_SYNC_CORE=y
+CONFIG_HAVE_PERF_EVENTS=y
 
 #
 # Kernel Performance Events And Counters
@@ -222,6 +223,16 @@ CONFIG_PERF_EVENTS=y
 # end of Kernel Performance Events And Counters
 
 # CONFIG_PROFILING is not set
+
+#
+# Kexec and crash features
+#
+CONFIG_KEXEC_CORE=y
+CONFIG_KEXEC=y
+CONFIG_KEXEC_FILE=y
+# CONFIG_KEXEC_SIG is not set
+# CONFIG_CRASH_DUMP is not set
+# end of Kexec and crash features
 # end of General setup
 
 CONFIG_64BIT=y
@@ -243,7 +254,6 @@ CONFIG_ARCH_MAY_HAVE_PC_FDC=y
 CONFIG_GENERIC_CALIBRATE_DELAY=y
 CONFIG_ARCH_HAS_CPU_RELAX=y
 CONFIG_ARCH_HIBERNATION_POSSIBLE=y
-CONFIG_ARCH_NR_GPIO=1024
 CONFIG_ARCH_SUSPEND_POSSIBLE=y
 CONFIG_AUDIT_ARCH=y
 CONFIG_HAVE_INTEL_TXT=y
@@ -257,10 +267,11 @@ CONFIG_CC_HAS_SANE_STACKPROTECTOR=y
 # Processor type and features
 #
 CONFIG_SMP=y
-CONFIG_X86_FEATURE_NAMES=y
+CONFIG_X86_X2APIC=y
+# CONFIG_X86_POSTED_MSI is not set
 # CONFIG_X86_MPPARSE is not set
-# CONFIG_GOLDFISH is not set
 # CONFIG_X86_CPU_RESCTRL is not set
+# CONFIG_X86_FRED is not set
 # CONFIG_X86_EXTENDED_PLATFORM is not set
 # CONFIG_X86_INTEL_LPSS is not set
 # CONFIG_X86_AMD_PLATFORM_DEVICE is not set
@@ -279,6 +290,7 @@ CONFIG_X86_INTEL_USERCOPY=y
 CONFIG_X86_USE_PPRO_CHECKSUM=y
 CONFIG_X86_P6_NOP=y
 CONFIG_X86_TSC=y
+CONFIG_X86_HAVE_PAE=y
 CONFIG_X86_CMPXCHG64=y
 CONFIG_X86_CMOV=y
 CONFIG_X86_MINIMUM_CPU_FAMILY=64
@@ -305,6 +317,7 @@ CONFIG_SCHED_SMT=y
 CONFIG_SCHED_MC=y
 CONFIG_SCHED_MC_PRIO=y
 CONFIG_X86_LOCAL_APIC=y
+CONFIG_ACPI_MADT_WAKEUP=y
 CONFIG_X86_IO_APIC=y
 # CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS is not set
 CONFIG_X86_MCE=y
@@ -322,7 +335,8 @@ CONFIG_X86_MCE_THRESHOLD=y
 
 # CONFIG_X86_VSYSCALL_EMULATION is not set
 CONFIG_X86_IOPL_IOPERM=y
-# CONFIG_MICROCODE is not set
+CONFIG_MICROCODE=y
+# CONFIG_MICROCODE_LATE_LOADING is not set
 # CONFIG_X86_MSR is not set
 # CONFIG_X86_CPUID is not set
 # CONFIG_X86_5LEVEL is not set
@@ -342,18 +356,25 @@ CONFIG_CC_HAS_IBT=y
 CONFIG_X86_INTEL_TSX_MODE_OFF=y
 # CONFIG_X86_INTEL_TSX_MODE_ON is not set
 # CONFIG_X86_INTEL_TSX_MODE_AUTO is not set
+# CONFIG_X86_USER_SHADOW_STACK is not set
 CONFIG_EFI=y
 # CONFIG_EFI_STUB is not set
+CONFIG_EFI_RUNTIME_MAP=y
 # CONFIG_HZ_100 is not set
 CONFIG_HZ_250=y
 # CONFIG_HZ_300 is not set
 # CONFIG_HZ_1000 is not set
 CONFIG_HZ=250
-CONFIG_KEXEC=y
-CONFIG_KEXEC_FILE=y
-CONFIG_ARCH_HAS_KEXEC_PURGATORY=y
-# CONFIG_KEXEC_SIG is not set
-# CONFIG_CRASH_DUMP is not set
+CONFIG_ARCH_SUPPORTS_KEXEC=y
+CONFIG_ARCH_SUPPORTS_KEXEC_FILE=y
+CONFIG_ARCH_SELECTS_KEXEC_FILE=y
+CONFIG_ARCH_SUPPORTS_KEXEC_PURGATORY=y
+CONFIG_ARCH_SUPPORTS_KEXEC_SIG=y
+CONFIG_ARCH_SUPPORTS_KEXEC_SIG_FORCE=y
+CONFIG_ARCH_SUPPORTS_KEXEC_BZIMAGE_VERIFY_SIG=y
+CONFIG_ARCH_SUPPORTS_KEXEC_JUMP=y
+CONFIG_ARCH_SUPPORTS_CRASH_DUMP=y
+CONFIG_ARCH_SUPPORTS_CRASH_HOTPLUG=y
 CONFIG_PHYSICAL_START=0x1000000
 CONFIG_RELOCATABLE=y
 CONFIG_RANDOMIZE_BASE=y
@@ -363,8 +384,6 @@ CONFIG_DYNAMIC_MEMORY_LAYOUT=y
 CONFIG_RANDOMIZE_MEMORY=y
 CONFIG_RANDOMIZE_MEMORY_PHYSICAL_PADDING=0x0
 CONFIG_HOTPLUG_CPU=y
-# CONFIG_BOOTPARAM_HOTPLUG_CPU0 is not set
-# CONFIG_DEBUG_HOTPLUG_CPU0 is not set
 # CONFIG_LEGACY_VSYSCALL_XONLY is not set
 CONFIG_LEGACY_VSYSCALL_NONE=y
 # CONFIG_CMDLINE_BOOL is not set
@@ -373,13 +392,27 @@ CONFIG_LEGACY_VSYSCALL_NONE=y
 CONFIG_HAVE_LIVEPATCH=y
 # end of Processor type and features
 
+CONFIG_CC_HAS_NAMED_AS=y
+CONFIG_USE_X86_SEG_SUPPORT=y
 CONFIG_CC_HAS_RETURN_THUNK=y
-CONFIG_SPECULATION_MITIGATIONS=y
-CONFIG_PAGE_TABLE_ISOLATION=y
-# CONFIG_RETPOLINE is not set
-CONFIG_CPU_IBRS_ENTRY=y
+CONFIG_CC_HAS_ENTRY_PADDING=y
+CONFIG_FUNCTION_PADDING_CFI=11
+CONFIG_FUNCTION_PADDING_BYTES=16
+CONFIG_CALL_PADDING=y
+CONFIG_HAVE_CALL_THUNKS=y
+CONFIG_CALL_THUNKS=y
+CONFIG_PREFIX_SYMBOLS=y
+CONFIG_CPU_MITIGATIONS=y
+CONFIG_MITIGATION_PAGE_TABLE_ISOLATION=y
+CONFIG_MITIGATION_RETPOLINE=y
+CONFIG_MITIGATION_RETHUNK=y
+CONFIG_MITIGATION_CALL_DEPTH_TRACKING=y
+# CONFIG_CALL_THUNKS_DEBUG is not set
+CONFIG_MITIGATION_IBRS_ENTRY=y
+# CONFIG_MITIGATION_GDS_FORCE is not set
+CONFIG_MITIGATION_RFDS=y
+CONFIG_MITIGATION_SPECTRE_BHI=y
 CONFIG_ARCH_HAS_ADD_PAGES=y
-CONFIG_ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE=y
 
 #
 # Power management and ACPI options
@@ -392,6 +425,7 @@ CONFIG_ACPI=y
 CONFIG_ACPI_LEGACY_TABLES_LOOKUP=y
 CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC=y
 CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT=y
+CONFIG_ACPI_THERMAL_LIB=y
 # CONFIG_ACPI_DEBUGGER is not set
 CONFIG_ACPI_SPCR_TABLE=y
 # CONFIG_ACPI_FPDT is not set
@@ -430,6 +464,7 @@ CONFIG_HAVE_ACPI_APEI_NMI=y
 # CONFIG_ACPI_CONFIGFS is not set
 # CONFIG_ACPI_PFRUT is not set
 CONFIG_ACPI_PCC=y
+# CONFIG_ACPI_FFH is not set
 # CONFIG_PMIC_OPREGION is not set
 CONFIG_ACPI_PRMT=y
 CONFIG_X86_PM_TIMER=y
@@ -457,7 +492,6 @@ CONFIG_CPU_FREQ_GOV_SCHEDUTIL=y
 CONFIG_X86_INTEL_PSTATE=y
 # CONFIG_X86_PCC_CPUFREQ is not set
 # CONFIG_X86_AMD_PSTATE is not set
-# CONFIG_X86_AMD_PSTATE_UT is not set
 # CONFIG_X86_ACPI_CPUFREQ is not set
 # CONFIG_X86_SPEEDSTEP_CENTRINO is not set
 # CONFIG_X86_P4_CLOCKMOD is not set
@@ -496,19 +530,26 @@ CONFIG_ISA_DMA_API=y
 # CONFIG_X86_X32_ABI is not set
 # end of Binary Emulations
 
-CONFIG_HAVE_KVM=y
 # CONFIG_VIRTUALIZATION is not set
 CONFIG_AS_AVX512=y
 CONFIG_AS_SHA1_NI=y
 CONFIG_AS_SHA256_NI=y
 CONFIG_AS_TPAUSE=y
+CONFIG_AS_GFNI=y
+CONFIG_AS_VAES=y
+CONFIG_AS_VPCLMULQDQ=y
+CONFIG_AS_WRUSS=y
+CONFIG_ARCH_CONFIGURES_CPU_MITIGATIONS=y
 
 #
 # General architecture-dependent options
 #
-CONFIG_CRASH_CORE=y
-CONFIG_KEXEC_CORE=y
 CONFIG_HOTPLUG_SMT=y
+CONFIG_HOTPLUG_CORE_SYNC=y
+CONFIG_HOTPLUG_CORE_SYNC_DEAD=y
+CONFIG_HOTPLUG_CORE_SYNC_FULL=y
+CONFIG_HOTPLUG_SPLIT_STARTUP=y
+CONFIG_HOTPLUG_PARALLEL=y
 CONFIG_GENERIC_ENTRY=y
 # CONFIG_KPROBES is not set
 CONFIG_JUMP_LABEL=y
@@ -532,6 +573,8 @@ CONFIG_GENERIC_SMP_IDLE_THREAD=y
 CONFIG_ARCH_HAS_FORTIFY_SOURCE=y
 CONFIG_ARCH_HAS_SET_MEMORY=y
 CONFIG_ARCH_HAS_SET_DIRECT_MAP=y
+CONFIG_ARCH_HAS_CPU_FINALIZE_INIT=y
+CONFIG_ARCH_HAS_CPU_PASID=y
 CONFIG_HAVE_ARCH_THREAD_STRUCT_WHITELIST=y
 CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT=y
 CONFIG_ARCH_WANTS_NO_INSTR=y
@@ -550,7 +593,9 @@ CONFIG_HAVE_PERF_USER_STACK_DUMP=y
 CONFIG_HAVE_ARCH_JUMP_LABEL=y
 CONFIG_HAVE_ARCH_JUMP_LABEL_RELATIVE=y
 CONFIG_MMU_GATHER_MERGE_VMAS=y
+CONFIG_MMU_LAZY_TLB_REFCOUNT=y
 CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y
+CONFIG_ARCH_HAS_NMI_SAFE_THIS_CPU_OPS=y
 CONFIG_HAVE_ALIGNED_STRUCT_PAGE=y
 CONFIG_HAVE_CMPXCHG_LOCAL=y
 CONFIG_HAVE_CMPXCHG_DOUBLE=y
@@ -587,8 +632,11 @@ CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
 CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
 CONFIG_HAVE_EXIT_THREAD=y
 CONFIG_ARCH_MMAP_RND_BITS=28
+CONFIG_HAVE_PAGE_SIZE_4KB=y
+CONFIG_PAGE_SIZE_4KB=y
 CONFIG_PAGE_SIZE_LESS_THAN_64KB=y
 CONFIG_PAGE_SIZE_LESS_THAN_256KB=y
+CONFIG_PAGE_SHIFT=12
 CONFIG_HAVE_OBJTOOL=y
 CONFIG_HAVE_JUMP_LABEL_HACK=y
 CONFIG_HAVE_NOINSTR_HACK=y
@@ -619,7 +667,9 @@ CONFIG_ARCH_SUPPORTS_PAGE_TABLE_CHECK=y
 CONFIG_ARCH_HAS_ELFCORE_COMPAT=y
 CONFIG_ARCH_HAS_PARANOID_L1D_FLUSH=y
 CONFIG_DYNAMIC_SIGFRAME=y
+CONFIG_ARCH_HAS_HW_PTE_YOUNG=y
 CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG=y
+CONFIG_ARCH_HAS_KERNEL_FPU_SUPPORT=y
 
 #
 # GCOV-based kernel profiling
@@ -630,10 +680,12 @@ CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
 CONFIG_HAVE_GCC_PLUGINS=y
 CONFIG_GCC_PLUGINS=y
 # CONFIG_GCC_PLUGIN_LATENT_ENTROPY is not set
+CONFIG_FUNCTION_ALIGNMENT_4B=y
+CONFIG_FUNCTION_ALIGNMENT_16B=y
+CONFIG_FUNCTION_ALIGNMENT=16
 # end of General architecture-dependent options
 
 CONFIG_RT_MUTEXES=y
-CONFIG_BASE_SMALL=1
 CONFIG_MODULES=y
 # CONFIG_MODULE_FORCE_LOAD is not set
 # CONFIG_MODULE_UNLOAD is not set
@@ -654,9 +706,9 @@ CONFIG_BLOCK_LEGACY_AUTOLOAD=y
 CONFIG_BLK_DEV_BSG_COMMON=y
 CONFIG_BLK_DEV_BSGLIB=y
 # CONFIG_BLK_DEV_INTEGRITY is not set
+CONFIG_BLK_DEV_WRITE_MOUNTED=y
 # CONFIG_BLK_DEV_ZONED is not set
 # CONFIG_BLK_WBT is not set
-# CONFIG_BLK_SED_OPAL is not set
 # CONFIG_BLK_INLINE_ENCRYPTION is not set
 
 #
@@ -710,19 +762,21 @@ CONFIG_BINFMT_SCRIPT=y
 # Memory Management options
 #
 # CONFIG_SWAP is not set
+CONFIG_HAVE_ZSMALLOC=y
 
 #
-# SLAB allocator options
+# Slab allocator options
 #
-# CONFIG_SLAB is not set
 CONFIG_SLUB=y
-# CONFIG_SLOB is not set
+# CONFIG_SLUB_TINY is not set
 CONFIG_SLAB_MERGE_DEFAULT=y
 # CONFIG_SLAB_FREELIST_RANDOM is not set
 # CONFIG_SLAB_FREELIST_HARDENED is not set
+# CONFIG_SLAB_BUCKETS is not set
 # CONFIG_SLUB_STATS is not set
 CONFIG_SLUB_CPU_PARTIAL=y
-# end of SLAB allocator options
+# CONFIG_RANDOM_KMALLOC_CACHES is not set
+# end of Slab allocator options
 
 # CONFIG_SHUFFLE_PAGE_ALLOCATOR is not set
 # CONFIG_COMPAT_BRK is not set
@@ -730,13 +784,17 @@ CONFIG_SPARSEMEM=y
 CONFIG_SPARSEMEM_EXTREME=y
 CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
 CONFIG_SPARSEMEM_VMEMMAP=y
-CONFIG_HAVE_FAST_GUP=y
+CONFIG_ARCH_WANT_OPTIMIZE_DAX_VMEMMAP=y
+CONFIG_ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP=y
+CONFIG_HAVE_GUP_FAST=y
 CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
 # CONFIG_MEMORY_HOTPLUG is not set
+CONFIG_ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE=y
 CONFIG_SPLIT_PTLOCK_CPUS=4
 CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y
 # CONFIG_COMPACTION is not set
 # CONFIG_PAGE_REPORTING is not set
+CONFIG_PCP_BATCH_SCALE_MAX=5
 CONFIG_PHYS_ADDR_T_64BIT=y
 CONFIG_MMU_NOTIFIER=y
 # CONFIG_KSM is not set
@@ -765,9 +823,17 @@ CONFIG_ZONE_DMA32=y
 #
 # GUP_TEST needs to have DEBUG_FS enabled
 #
+# CONFIG_DMAPOOL_TEST is not set
 CONFIG_ARCH_HAS_PTE_SPECIAL=y
+# CONFIG_MEMFD_CREATE is not set
+CONFIG_SECRETMEM=y
 # CONFIG_USERFAULTFD is not set
 # CONFIG_LRU_GEN is not set
+CONFIG_ARCH_SUPPORTS_PER_VMA_LOCK=y
+CONFIG_PER_VMA_LOCK=y
+CONFIG_LOCK_MM_AND_FIND_VMA=y
+CONFIG_IOMMU_MM_DATA=y
+CONFIG_EXECMEM=y
 
 #
 # Data Access Monitoring
@@ -784,7 +850,6 @@ CONFIG_NET=y
 CONFIG_PACKET=y
 # CONFIG_PACKET_DIAG is not set
 CONFIG_UNIX=y
-CONFIG_UNIX_SCM=y
 CONFIG_AF_UNIX_OOB=y
 # CONFIG_UNIX_DIAG is not set
 # CONFIG_TLS is not set
@@ -807,13 +872,13 @@ CONFIG_INET_TABLE_PERTURB_ORDER=16
 # CONFIG_TCP_CONG_ADVANCED is not set
 CONFIG_TCP_CONG_CUBIC=y
 CONFIG_DEFAULT_TCP_CONG="cubic"
+# CONFIG_TCP_AO is not set
 # CONFIG_TCP_MD5SIG is not set
 # CONFIG_IPV6 is not set
 # CONFIG_MPTCP is not set
 # CONFIG_NETWORK_SECMARK is not set
 # CONFIG_NETWORK_PHY_TIMESTAMPING is not set
 # CONFIG_NETFILTER is not set
-# CONFIG_BPFILTER is not set
 # CONFIG_IP_DCCP is not set
 # CONFIG_IP_SCTP is not set
 # CONFIG_RDS is not set
@@ -843,6 +908,7 @@ CONFIG_DEFAULT_TCP_CONG="cubic"
 # CONFIG_QRTR is not set
 # CONFIG_NET_NCSI is not set
 CONFIG_PCPU_DEV_REFCNT=y
+CONFIG_MAX_SKB_FRAGS=17
 CONFIG_RPS=y
 CONFIG_RFS_ACCEL=y
 CONFIG_SOCK_RX_QUEUE_MAPPING=y
@@ -882,6 +948,7 @@ CONFIG_ETHTOOL_NETLINK=y
 CONFIG_HAVE_EISA=y
 # CONFIG_EISA is not set
 CONFIG_HAVE_PCI=y
+CONFIG_GENERIC_PCI_IOMAP=y
 CONFIG_PCI=y
 CONFIG_PCI_DOMAINS=y
 # CONFIG_PCIEPORTBUS is not set
@@ -892,7 +959,6 @@ CONFIG_PCIEASPM_DEFAULT=y
 # CONFIG_PCIEASPM_PERFORMANCE is not set
 # CONFIG_PCIE_PTM is not set
 CONFIG_PCI_MSI=y
-CONFIG_PCI_MSI_IRQ_DOMAIN=y
 CONFIG_PCI_QUIRKS=y
 # CONFIG_PCI_DEBUG is not set
 # CONFIG_PCI_STUB is not set
@@ -917,21 +983,26 @@ CONFIG_VGA_ARB_MAX_GPUS=16
 # CONFIG_VMD is not set
 
 #
-# DesignWare PCI Core Support
+# Cadence-based PCIe controllers
+#
+# end of Cadence-based PCIe controllers
+
+#
+# DesignWare-based PCIe controllers
 #
-# CONFIG_PCIE_DW_PLAT_HOST is not set
 # CONFIG_PCI_MESON is not set
-# end of DesignWare PCI Core Support
+# CONFIG_PCIE_DW_PLAT_HOST is not set
+# end of DesignWare-based PCIe controllers
 
 #
-# Mobiveil PCIe Core Support
+# Mobiveil-based PCIe controllers
 #
-# end of Mobiveil PCIe Core Support
+# end of Mobiveil-based PCIe controllers
 
 #
-# Cadence PCIe controllers support
+# PLDA-based PCIe controllers
 #
-# end of Cadence PCIe controllers support
+# end of PLDA-based PCIe controllers
 # end of PCI controller drivers
 
 #
@@ -975,12 +1046,14 @@ CONFIG_EXTRA_FIRMWARE=""
 # CONFIG_DEBUG_DEVRES is not set
 # CONFIG_DEBUG_TEST_DRIVER_REMOVE is not set
 # CONFIG_TEST_ASYNC_DRIVER_PROBE is not set
+CONFIG_GENERIC_CPU_DEVICES=y
 CONFIG_GENERIC_CPU_AUTOPROBE=y
 CONFIG_GENERIC_CPU_VULNERABILITIES=y
 CONFIG_REGMAP=y
 CONFIG_REGMAP_MMIO=y
 CONFIG_DMA_SHARED_BUFFER=y
 # CONFIG_DMA_FENCE_TRACE is not set
+# CONFIG_FW_DEVLINK_SYNC_STATE_TIMEOUT is not set
 # end of Generic Driver Options
 
 #
@@ -990,6 +1063,11 @@ CONFIG_DMA_SHARED_BUFFER=y
 # CONFIG_MHI_BUS_EP is not set
 # end of Bus devices
 
+#
+# Cache Drivers
+#
+# end of Cache Drivers
+
 # CONFIG_CONNECTOR is not set
 
 #
@@ -1016,8 +1094,6 @@ CONFIG_SYSFB_SIMPLEFB=y
 # EFI (Extensible Firmware Interface) Support
 #
 CONFIG_EFI_ESRT=y
-CONFIG_EFI_RUNTIME_MAP=y
-# CONFIG_EFI_FAKE_MEMMAP is not set
 CONFIG_EFI_RUNTIME_WRAPPERS=y
 # CONFIG_EFI_BOOTLOADER_CONTROL is not set
 # CONFIG_EFI_CAPSULE_LOADER is not set
@@ -1029,6 +1105,11 @@ CONFIG_EFI_CUSTOM_SSDT_OVERLAYS=y
 # CONFIG_EFI_COCO_SECRET is not set
 # end of EFI (Extensible Firmware Interface) Support
 
+#
+# Qualcomm firmware drivers
+#
+# end of Qualcomm firmware drivers
+
 #
 # Tegra firmware driver
 #
@@ -1073,7 +1154,7 @@ CONFIG_BLK_DEV_NVME=y
 # CONFIG_NVME_VERBOSE_ERRORS is not set
 # CONFIG_NVME_FC is not set
 # CONFIG_NVME_TCP is not set
-# CONFIG_NVME_AUTH is not set
+# CONFIG_NVME_HOST_AUTH is not set
 # end of NVME Support
 
 #
@@ -1105,7 +1186,6 @@ CONFIG_BLK_DEV_NVME=y
 # EEPROM support
 #
 # CONFIG_EEPROM_AT24 is not set
-# CONFIG_EEPROM_LEGACY is not set
 # CONFIG_EEPROM_MAX6875 is not set
 # CONFIG_EEPROM_93CX6 is not set
 # CONFIG_EEPROM_IDT_89HPESX is not set
@@ -1122,8 +1202,6 @@ CONFIG_BLK_DEV_NVME=y
 # CONFIG_SENSORS_LIS3_I2C is not set
 # CONFIG_ALTERA_STAPL is not set
 # CONFIG_INTEL_MEI is not set
-# CONFIG_INTEL_MEI_ME is not set
-# CONFIG_INTEL_MEI_TXE is not set
 # CONFIG_VMWARE_VMCI is not set
 # CONFIG_GENWQE is not set
 # CONFIG_ECHO is not set
@@ -1131,9 +1209,9 @@ CONFIG_BLK_DEV_NVME=y
 # CONFIG_MISC_ALCOR_PCI is not set
 # CONFIG_MISC_RTSX_PCI is not set
 # CONFIG_MISC_RTSX_USB is not set
-# CONFIG_HABANA_AI is not set
 # CONFIG_UACCE is not set
 # CONFIG_PVPANIC is not set
+# CONFIG_KEBA_CP500 is not set
 # end of Misc devices
 
 #
@@ -1245,6 +1323,7 @@ CONFIG_SATA_MOBILE_LPM_POLICY=0
 # CONFIG_ATA_SFF is not set
 CONFIG_MD=y
 # CONFIG_BLK_DEV_MD is not set
+CONFIG_MD_BITMAP_FILE=y
 # CONFIG_BCACHE is not set
 CONFIG_BLK_DEV_DM_BUILTIN=y
 CONFIG_BLK_DEV_DM=y
@@ -1277,6 +1356,7 @@ CONFIG_DM_VERITY_FEC=y
 # CONFIG_DM_SWITCH is not set
 # CONFIG_DM_LOG_WRITES is not set
 # CONFIG_DM_INTEGRITY is not set
+# CONFIG_DM_VDO is not set
 # CONFIG_TARGET_CORE is not set
 # CONFIG_FUSION is not set
 
@@ -1303,6 +1383,7 @@ CONFIG_NET_CORE=y
 # CONFIG_GENEVE is not set
 # CONFIG_BAREUDP is not set
 # CONFIG_GTP is not set
+# CONFIG_PFCP is not set
 # CONFIG_MACSEC is not set
 # CONFIG_NETCONSOLE is not set
 # CONFIG_TUN is not set
@@ -1348,7 +1429,6 @@ CONFIG_E1000E=m
 CONFIG_E1000E_HWTS=y
 # CONFIG_IGB is not set
 # CONFIG_IGBVF is not set
-# CONFIG_IXGB is not set
 # CONFIG_IXGBE is not set
 # CONFIG_IXGBEVF is not set
 # CONFIG_I40E is not set
@@ -1356,11 +1436,12 @@ CONFIG_E1000E_HWTS=y
 # CONFIG_ICE is not set
 # CONFIG_FM10K is not set
 # CONFIG_IGC is not set
-# CONFIG_NET_VENDOR_WANGXUN is not set
+# CONFIG_IDPF is not set
 # CONFIG_JME is not set
 # CONFIG_NET_VENDOR_LITEX is not set
 # CONFIG_NET_VENDOR_MARVELL is not set
 # CONFIG_NET_VENDOR_MELLANOX is not set
+# CONFIG_NET_VENDOR_META is not set
 # CONFIG_NET_VENDOR_MICREL is not set
 # CONFIG_NET_VENDOR_MICROCHIP is not set
 # CONFIG_NET_VENDOR_MICROSEMI is not set
@@ -1397,18 +1478,18 @@ CONFIG_E1000E_HWTS=y
 # CONFIG_NET_VENDOR_TI is not set
 # CONFIG_NET_VENDOR_VERTEXCOM is not set
 # CONFIG_NET_VENDOR_VIA is not set
+# CONFIG_NET_VENDOR_WANGXUN is not set
 # CONFIG_NET_VENDOR_WIZNET is not set
 # CONFIG_NET_VENDOR_XILINX is not set
 # CONFIG_FDDI is not set
 # CONFIG_HIPPI is not set
-# CONFIG_NET_SB1000 is not set
 # CONFIG_PHYLIB is not set
-# CONFIG_PSE_CONTROLLER is not set
 # CONFIG_MDIO_DEVICE is not set
 
 #
 # PCS device drivers
 #
+# CONFIG_PCS_XPCS is not set
 # end of PCS device drivers
 
 # CONFIG_PPP is not set
@@ -1545,10 +1626,10 @@ CONFIG_TTY=y
 CONFIG_VT=y
 CONFIG_CONSOLE_TRANSLATIONS=y
 CONFIG_VT_CONSOLE=y
-CONFIG_HW_CONSOLE=y
 CONFIG_VT_HW_CONSOLE_BINDING=y
 CONFIG_UNIX98_PTYS=y
 # CONFIG_LEGACY_PTYS is not set
+# CONFIG_LEGACY_TIOCSTI is not set
 CONFIG_LDISC_AUTOLOAD=y
 
 #
@@ -1556,17 +1637,23 @@ CONFIG_LDISC_AUTOLOAD=y
 #
 CONFIG_SERIAL_8250=y
 # CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
-# CONFIG_SERIAL_8250_PNP is not set
+CONFIG_SERIAL_8250_PNP=y
 # CONFIG_SERIAL_8250_16550A_VARIANTS is not set
 # CONFIG_SERIAL_8250_FINTEK is not set
-# CONFIG_SERIAL_8250_CONSOLE is not set
-# CONFIG_SERIAL_8250_PCI is not set
-CONFIG_SERIAL_8250_NR_UARTS=4
-CONFIG_SERIAL_8250_RUNTIME_UARTS=4
-# CONFIG_SERIAL_8250_EXTENDED is not set
-# CONFIG_SERIAL_8250_DW is not set
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_PCILIB=y
+CONFIG_SERIAL_8250_PCI=y
+CONFIG_SERIAL_8250_EXAR=y
+CONFIG_SERIAL_8250_NR_UARTS=32
+CONFIG_SERIAL_8250_RUNTIME_UARTS=32
+CONFIG_SERIAL_8250_EXTENDED=y
+CONFIG_SERIAL_8250_MANY_PORTS=y
+CONFIG_SERIAL_8250_PCI1XXXX=y
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_8250_DWLIB=y
+CONFIG_SERIAL_8250_DW=y
 # CONFIG_SERIAL_8250_RT288X is not set
-# CONFIG_SERIAL_8250_LPSS is not set
+CONFIG_SERIAL_8250_LPSS=y
 # CONFIG_SERIAL_8250_MID is not set
 # CONFIG_SERIAL_8250_PERICOM is not set
 
@@ -1597,6 +1684,7 @@ CONFIG_TTY_PRINTK=y
 CONFIG_TTY_PRINTK_LEVEL=6
 # CONFIG_VIRTIO_CONSOLE is not set
 # CONFIG_IPMI_HANDLER is not set
+# CONFIG_SSIF_IPMI_BMC is not set
 # CONFIG_IPMB_DEVICE_INTERFACE is not set
 CONFIG_HW_RANDOM=y
 # CONFIG_HW_RANDOM_TIMERIOMEM is not set
@@ -1613,6 +1701,7 @@ CONFIG_DEVPORT=y
 # CONFIG_HPET is not set
 # CONFIG_HANGCHECK_TIMER is not set
 CONFIG_TCG_TPM=y
+CONFIG_TCG_TPM2_HMAC=y
 # CONFIG_HW_RANDOM_TPM is not set
 CONFIG_TCG_TIS_CORE=y
 CONFIG_TCG_TIS=y
@@ -1630,8 +1719,6 @@ CONFIG_TCG_TIS=y
 # CONFIG_TELCLOCK is not set
 # CONFIG_XILLYBUS is not set
 # CONFIG_XILLYUSB is not set
-CONFIG_RANDOM_TRUST_CPU=y
-# CONFIG_RANDOM_TRUST_BOOTLOADER is not set
 # end of Character devices
 
 #
@@ -1688,6 +1775,7 @@ CONFIG_I2C_ALGOBIT=y
 # CONFIG_I2C_SIS96X is not set
 # CONFIG_I2C_VIA is not set
 # CONFIG_I2C_VIAPRO is not set
+# CONFIG_I2C_ZHAOXIN is not set
 
 #
 # ACPI drivers
@@ -1752,9 +1840,9 @@ CONFIG_PTP_1588_CLOCK_OPTIONAL=y
 # CONFIG_GPIOLIB is not set
 # CONFIG_W1 is not set
 # CONFIG_POWER_RESET is not set
+# CONFIG_POWER_SEQUENCING is not set
 CONFIG_POWER_SUPPLY=y
 # CONFIG_POWER_SUPPLY_DEBUG is not set
-# CONFIG_PDA_POWER is not set
 # CONFIG_IP5XXX_POWER is not set
 # CONFIG_TEST_POWER is not set
 # CONFIG_CHARGER_ADP5061 is not set
@@ -1766,8 +1854,8 @@ CONFIG_POWER_SUPPLY=y
 # CONFIG_BATTERY_SBS is not set
 # CONFIG_CHARGER_SBS is not set
 # CONFIG_BATTERY_BQ27XXX is not set
-# CONFIG_BATTERY_MAX17040 is not set
 # CONFIG_BATTERY_MAX17042 is not set
+# CONFIG_BATTERY_MAX1720X is not set
 # CONFIG_CHARGER_MAX8903 is not set
 # CONFIG_CHARGER_LP8727 is not set
 # CONFIG_CHARGER_LTC4162L is not set
@@ -1778,12 +1866,12 @@ CONFIG_POWER_SUPPLY=y
 # CONFIG_BATTERY_RT5033 is not set
 # CONFIG_CHARGER_BD99954 is not set
 # CONFIG_BATTERY_UG3105 is not set
+# CONFIG_FUEL_GAUGE_MM8013 is not set
 # CONFIG_HWMON is not set
 CONFIG_THERMAL=y
 # CONFIG_THERMAL_NETLINK is not set
 # CONFIG_THERMAL_STATISTICS is not set
 CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS=0
-# CONFIG_THERMAL_WRITABLE_TRIPS is not set
 CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
 # CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE is not set
 # CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE is not set
@@ -1809,7 +1897,6 @@ CONFIG_X86_THERMAL_VECTOR=y
 
 # CONFIG_INTEL_PCH_THERMAL is not set
 # CONFIG_INTEL_TCC_COOLING is not set
-# CONFIG_INTEL_MENLOW is not set
 # CONFIG_INTEL_HFI_THERMAL is not set
 # end of Intel thermal drivers
 
@@ -1823,10 +1910,12 @@ CONFIG_BCMA_POSSIBLE=y
 # Multifunction device drivers
 #
 # CONFIG_MFD_AS3711 is not set
+# CONFIG_MFD_SMPRO is not set
 # CONFIG_PMIC_ADP5520 is not set
 # CONFIG_MFD_BCM590XX is not set
 # CONFIG_MFD_BD9571MWV is not set
 # CONFIG_MFD_AXP20X_I2C is not set
+# CONFIG_MFD_CS42L43_I2C is not set
 # CONFIG_MFD_MADERA is not set
 # CONFIG_PMIC_DA903X is not set
 # CONFIG_MFD_DA9052_I2C is not set
@@ -1837,7 +1926,6 @@ CONFIG_BCMA_POSSIBLE=y
 # CONFIG_MFD_DLN2 is not set
 # CONFIG_MFD_MC13XXX_I2C is not set
 # CONFIG_MFD_MP2629 is not set
-# CONFIG_HTC_PASIC3 is not set
 # CONFIG_MFD_INTEL_QUARK_I2C_GPIO is not set
 # CONFIG_LPC_ICH is not set
 # CONFIG_LPC_SCH is not set
@@ -1851,6 +1939,7 @@ CONFIG_BCMA_POSSIBLE=y
 # CONFIG_MFD_88PM805 is not set
 # CONFIG_MFD_88PM860X is not set
 # CONFIG_MFD_MAX14577 is not set
+# CONFIG_MFD_MAX77541 is not set
 # CONFIG_MFD_MAX77693 is not set
 # CONFIG_MFD_MAX77843 is not set
 # CONFIG_MFD_MAX8907 is not set
@@ -1874,7 +1963,6 @@ CONFIG_BCMA_POSSIBLE=y
 # CONFIG_MFD_SM501 is not set
 # CONFIG_MFD_SKY81452 is not set
 CONFIG_MFD_SYSCON=y
-# CONFIG_MFD_TI_AM335X_TSCADC is not set
 # CONFIG_MFD_LP3943 is not set
 # CONFIG_MFD_LP8788 is not set
 # CONFIG_MFD_TI_LMU is not set
@@ -1886,6 +1974,7 @@ CONFIG_MFD_SYSCON=y
 # CONFIG_MFD_TI_LP873X is not set
 # CONFIG_MFD_TPS6586X is not set
 # CONFIG_MFD_TPS65912_I2C is not set
+# CONFIG_MFD_TPS6594_I2C is not set
 # CONFIG_TWL4030_CORE is not set
 # CONFIG_TWL6040_CORE is not set
 # CONFIG_MFD_WL1273_CORE is not set
@@ -1898,6 +1987,7 @@ CONFIG_MFD_SYSCON=y
 # CONFIG_MFD_WM8350_I2C is not set
 # CONFIG_MFD_WM8994 is not set
 # CONFIG_MFD_ATC260X_I2C is not set
+# CONFIG_MFD_CS40L50_I2C is not set
 # end of Multifunction device drivers
 
 # CONFIG_REGULATOR is not set
@@ -1915,35 +2005,18 @@ CONFIG_MFD_SYSCON=y
 # Graphics support
 #
 CONFIG_APERTURE_HELPERS=y
+CONFIG_SCREEN_INFO=y
+CONFIG_VIDEO=y
+# CONFIG_AUXDISPLAY is not set
 # CONFIG_AGP is not set
 # CONFIG_VGA_SWITCHEROO is not set
 # CONFIG_DRM is not set
-# CONFIG_DRM_DEBUG_MODESET_LOCK is not set
-
-#
-# ARM devices
-#
-# end of ARM devices
-
 CONFIG_DRM_PANEL_ORIENTATION_QUIRKS=y
 
 #
 # Frame buffer Devices
 #
-CONFIG_FB_CMDLINE=y
-CONFIG_FB_NOTIFY=y
 CONFIG_FB=y
-# CONFIG_FIRMWARE_EDID is not set
-CONFIG_FB_CFB_FILLRECT=y
-CONFIG_FB_CFB_COPYAREA=y
-CONFIG_FB_CFB_IMAGEBLIT=y
-# CONFIG_FB_FOREIGN_ENDIAN is not set
-# CONFIG_FB_MODE_HELPERS is not set
-# CONFIG_FB_TILEBLITTING is not set
-
-#
-# Frame buffer hardware drivers
-#
 # CONFIG_FB_CIRRUS is not set
 # CONFIG_FB_PM2 is not set
 # CONFIG_FB_CYBER2000 is not set
@@ -1960,7 +2033,6 @@ CONFIG_FB_EFI=y
 # CONFIG_FB_NVIDIA is not set
 # CONFIG_FB_RIVA is not set
 # CONFIG_FB_I740 is not set
-# CONFIG_FB_LE80578 is not set
 # CONFIG_FB_MATROX is not set
 # CONFIG_FB_RADEON is not set
 # CONFIG_FB_ATY128 is not set
@@ -1985,6 +2057,18 @@ CONFIG_FB_EFI=y
 # CONFIG_FB_MB862XX is not set
 # CONFIG_FB_SIMPLE is not set
 # CONFIG_FB_SM712 is not set
+CONFIG_FB_CORE=y
+CONFIG_FB_NOTIFY=y
+# CONFIG_FIRMWARE_EDID is not set
+CONFIG_FB_DEVICE=y
+CONFIG_FB_CFB_FILLRECT=y
+CONFIG_FB_CFB_COPYAREA=y
+CONFIG_FB_CFB_IMAGEBLIT=y
+# CONFIG_FB_FOREIGN_ENDIAN is not set
+CONFIG_FB_IOMEM_FOPS=y
+CONFIG_FB_IOMEM_HELPERS=y
+# CONFIG_FB_MODE_HELPERS is not set
+# CONFIG_FB_TILEBLITTING is not set
 # end of Frame buffer Devices
 
 #
@@ -1992,11 +2076,14 @@ CONFIG_FB_EFI=y
 #
 # CONFIG_LCD_CLASS_DEVICE is not set
 CONFIG_BACKLIGHT_CLASS_DEVICE=y
+# CONFIG_BACKLIGHT_KTD2801 is not set
+# CONFIG_BACKLIGHT_KTZ8866 is not set
 # CONFIG_BACKLIGHT_APPLE is not set
 # CONFIG_BACKLIGHT_QCOM_WLED is not set
 # CONFIG_BACKLIGHT_SAHARA is not set
 # CONFIG_BACKLIGHT_ADP8860 is not set
 # CONFIG_BACKLIGHT_ADP8870 is not set
+# CONFIG_BACKLIGHT_LM3509 is not set
 # CONFIG_BACKLIGHT_LM3639 is not set
 # CONFIG_BACKLIGHT_LV5207LP is not set
 # CONFIG_BACKLIGHT_BD6107 is not set
@@ -2021,10 +2108,7 @@ CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
 # end of Graphics support
 
 # CONFIG_SOUND is not set
-
-#
-# HID support
-#
+CONFIG_HID_SUPPORT=y
 CONFIG_HID=y
 # CONFIG_HID_BATTERY_STRENGTH is not set
 # CONFIG_HIDRAW is not set
@@ -2052,11 +2136,13 @@ CONFIG_HID_GENERIC=y
 # CONFIG_HID_EMS_FF is not set
 # CONFIG_HID_ELECOM is not set
 # CONFIG_HID_ELO is not set
+# CONFIG_HID_EVISION is not set
 # CONFIG_HID_EZKEY is not set
 # CONFIG_HID_GEMBIRD is not set
 # CONFIG_HID_GFRM is not set
 # CONFIG_HID_GLORIOUS is not set
 # CONFIG_HID_HOLTEK is not set
+# CONFIG_HID_GOOGLE_STADIA_FF is not set
 # CONFIG_HID_VIVALDI is not set
 # CONFIG_HID_KEYTOUCH is not set
 # CONFIG_HID_KYE is not set
@@ -2117,8 +2203,14 @@ CONFIG_HID_GENERIC=y
 # CONFIG_HID_ZYDACRON is not set
 # CONFIG_HID_SENSOR_HUB is not set
 # CONFIG_HID_ALPS is not set
+# CONFIG_HID_MCP2221 is not set
 # end of Special HID drivers
 
+#
+# HID-BPF support
+#
+# end of HID-BPF support
+
 #
 # USB HID support
 #
@@ -2134,11 +2226,9 @@ CONFIG_USB_HID=m
 # end of USB HID Boot Protocol drivers
 # end of USB HID support
 
-#
-# I2C HID support
-#
+CONFIG_I2C_HID=y
 # CONFIG_I2C_HID_ACPI is not set
-# end of I2C HID support
+# CONFIG_I2C_HID_OF is not set
 
 #
 # Intel ISH HID support
@@ -2151,7 +2241,6 @@ CONFIG_USB_HID=m
 #
 # CONFIG_AMD_SFH_HID is not set
 # end of AMD SFH HID Support
-# end of HID support
 
 CONFIG_USB_OHCI_LITTLE_ENDIAN=y
 CONFIG_USB_SUPPORT=y
@@ -2160,6 +2249,7 @@ CONFIG_USB_COMMON=y
 CONFIG_USB_ARCH_HAS_HCD=y
 CONFIG_USB=y
 CONFIG_USB_PCI=y
+CONFIG_USB_PCI_AMD=y
 # CONFIG_USB_ANNOUNCE_NEW_DEVICES is not set
 
 #
@@ -2171,6 +2261,7 @@ CONFIG_USB_DEFAULT_PERSIST=y
 # CONFIG_USB_OTG_PRODUCTLIST is not set
 # CONFIG_USB_OTG_DISABLE_EXTERNAL_HUB is not set
 CONFIG_USB_AUTOSUSPEND_DELAY=2
+CONFIG_USB_DEFAULT_AUTHORIZATION_MODE=1
 # CONFIG_USB_MON is not set
 
 #
@@ -2190,7 +2281,6 @@ CONFIG_USB_EHCI_PCI=m
 CONFIG_USB_EHCI_HCD_PLATFORM=m
 # CONFIG_USB_OXU210HP_HCD is not set
 # CONFIG_USB_ISP116X_HCD is not set
-# CONFIG_USB_FOTG210_HCD is not set
 # CONFIG_USB_OHCI_HCD is not set
 # CONFIG_USB_UHCI_HCD is not set
 # CONFIG_USB_SL811_HCD is not set
@@ -2235,6 +2325,10 @@ CONFIG_USB_STORAGE=m
 # CONFIG_USB_MDC800 is not set
 # CONFIG_USB_MICROTEK is not set
 # CONFIG_USBIP_CORE is not set
+
+#
+# USB dual-mode controller drivers
+#
 # CONFIG_USB_CDNS_SUPPORT is not set
 # CONFIG_USB_MUSB_HDRC is not set
 # CONFIG_USB_DWC3 is not set
@@ -2259,9 +2353,9 @@ CONFIG_USB_STORAGE=m
 # CONFIG_USB_CYPRESS_CY7C63 is not set
 # CONFIG_USB_CYTHERM is not set
 # CONFIG_USB_IDMOUSE is not set
-# CONFIG_USB_FTDI_ELAN is not set
 # CONFIG_USB_APPLEDISPLAY is not set
 # CONFIG_APPLE_MFI_FASTCHARGE is not set
+# CONFIG_USB_LJCA is not set
 # CONFIG_USB_SISUSBVGA is not set
 # CONFIG_USB_LD is not set
 # CONFIG_USB_TRANCEVIBRATOR is not set
@@ -2324,6 +2418,7 @@ CONFIG_RTC_INTF_DEV=y
 # CONFIG_RTC_DRV_DS1374 is not set
 # CONFIG_RTC_DRV_DS1672 is not set
 # CONFIG_RTC_DRV_MAX6900 is not set
+# CONFIG_RTC_DRV_MAX31335 is not set
 # CONFIG_RTC_DRV_RS5C372 is not set
 # CONFIG_RTC_DRV_ISL1208 is not set
 # CONFIG_RTC_DRV_ISL12022 is not set
@@ -2338,6 +2433,7 @@ CONFIG_RTC_INTF_DEV=y
 # CONFIG_RTC_DRV_S35390A is not set
 # CONFIG_RTC_DRV_FM3130 is not set
 # CONFIG_RTC_DRV_RX8010 is not set
+# CONFIG_RTC_DRV_RX8111 is not set
 # CONFIG_RTC_DRV_RX8581 is not set
 # CONFIG_RTC_DRV_RX8025 is not set
 # CONFIG_RTC_DRV_EM3027 is not set
@@ -2374,9 +2470,7 @@ CONFIG_RTC_DRV_CMOS=y
 # CONFIG_RTC_DRV_M48T35 is not set
 # CONFIG_RTC_DRV_M48T59 is not set
 # CONFIG_RTC_DRV_MSM6242 is not set
-# CONFIG_RTC_DRV_BQ4802 is not set
 # CONFIG_RTC_DRV_RP5C01 is not set
-# CONFIG_RTC_DRV_V3020 is not set
 
 #
 # on-CPU RTC drivers
@@ -2400,7 +2494,6 @@ CONFIG_SYNC_FILE=y
 # CONFIG_DMABUF_SYSFS_STATS is not set
 # end of DMABUF options
 
-# CONFIG_AUXDISPLAY is not set
 # CONFIG_UIO is not set
 # CONFIG_VFIO is not set
 # CONFIG_VIRT_DRIVERS is not set
@@ -2416,15 +2509,16 @@ CONFIG_SYNC_FILE=y
 # CONFIG_GREYBUS is not set
 # CONFIG_COMEDI is not set
 # CONFIG_STAGING is not set
+# CONFIG_GOLDFISH is not set
 # CONFIG_CHROME_PLATFORMS is not set
+# CONFIG_CZNIC_PLATFORMS is not set
 # CONFIG_MELLANOX_PLATFORM is not set
 # CONFIG_SURFACE_PLATFORMS is not set
 CONFIG_X86_PLATFORM_DEVICES=y
 # CONFIG_ACPI_WMI is not set
 # CONFIG_ACERHDF is not set
 # CONFIG_ACER_WIRELESS is not set
-# CONFIG_AMD_PMF is not set
-# CONFIG_AMD_PMC is not set
+# CONFIG_AMD_WBRF is not set
 # CONFIG_ADV_SWBUTTON is not set
 # CONFIG_APPLE_GMUX is not set
 # CONFIG_ASUS_LAPTOP is not set
@@ -2433,12 +2527,12 @@ CONFIG_X86_PLATFORM_DEVICES=y
 # CONFIG_FUJITSU_LAPTOP is not set
 # CONFIG_FUJITSU_TABLET is not set
 # CONFIG_GPD_POCKET_FAN is not set
-# CONFIG_HP_ACCEL is not set
+# CONFIG_X86_PLATFORM_DRIVERS_HP is not set
 # CONFIG_WIRELESS_HOTKEY is not set
 # CONFIG_IBM_RTL is not set
 # CONFIG_SENSORS_HDAPS is not set
+# CONFIG_INTEL_IFS is not set
 # CONFIG_INTEL_SAR_INT1092 is not set
-# CONFIG_INTEL_PMC_CORE is not set
 
 #
 # Intel Speed Select Technology interface support
@@ -2459,6 +2553,8 @@ CONFIG_X86_PLATFORM_DEVICES=y
 # CONFIG_INTEL_SMARTCONNECT is not set
 # CONFIG_INTEL_TURBO_MAX_3 is not set
 # CONFIG_INTEL_VSEC is not set
+# CONFIG_ACPI_QUICKSTART is not set
+# CONFIG_MSI_EC is not set
 # CONFIG_SAMSUNG_LAPTOP is not set
 # CONFIG_SAMSUNG_Q10 is not set
 # CONFIG_TOSHIBA_BT_RFKILL is not set
@@ -2472,7 +2568,6 @@ CONFIG_X86_PLATFORM_DEVICES=y
 # CONFIG_INTEL_SCU_PLATFORM is not set
 # CONFIG_SIEMENS_SIMATIC_IPC is not set
 # CONFIG_WINMATE_FM07_KEYS is not set
-# CONFIG_P2SB is not set
 CONFIG_HAVE_CLK=y
 CONFIG_HAVE_CLK_PREPARE=y
 CONFIG_COMMON_CLK=y
@@ -2497,7 +2592,6 @@ CONFIG_MAILBOX=y
 CONFIG_PCC=y
 # CONFIG_ALTERA_MBOX is not set
 CONFIG_IOMMU_IOVA=y
-CONFIG_IOASID=y
 CONFIG_IOMMU_API=y
 CONFIG_IOMMU_SUPPORT=y
 
@@ -2511,6 +2605,7 @@ CONFIG_IOMMU_DEFAULT_DMA_LAZY=y
 # CONFIG_IOMMU_DEFAULT_PASSTHROUGH is not set
 CONFIG_IOMMU_DMA=y
 CONFIG_IOMMU_SVA=y
+CONFIG_IOMMU_IOPF=y
 # CONFIG_AMD_IOMMU is not set
 CONFIG_DMAR_TABLE=y
 CONFIG_INTEL_IOMMU=y
@@ -2518,7 +2613,9 @@ CONFIG_INTEL_IOMMU_SVM=y
 CONFIG_INTEL_IOMMU_DEFAULT_ON=y
 CONFIG_INTEL_IOMMU_FLOPPY_WA=y
 # CONFIG_INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON is not set
-# CONFIG_IRQ_REMAP is not set
+CONFIG_INTEL_IOMMU_PERF_EVENTS=y
+# CONFIG_IOMMUFD is not set
+CONFIG_IRQ_REMAP=y
 
 #
 # Remoteproc drivers
@@ -2569,6 +2666,8 @@ CONFIG_INTEL_IOMMU_FLOPPY_WA=y
 #
 # end of Enable LiteX SoC Builder specific drivers
 
+# CONFIG_WPCM450_SOC is not set
+
 #
 # Qualcomm SoC drivers
 #
@@ -2582,6 +2681,31 @@ CONFIG_INTEL_IOMMU_FLOPPY_WA=y
 # end of Xilinx SoC drivers
 # end of SOC (System On Chip) specific Drivers
 
+#
+# PM Domains
+#
+
+#
+# Amlogic PM Domains
+#
+# end of Amlogic PM Domains
+
+#
+# Broadcom PM Domains
+#
+# end of Broadcom PM Domains
+
+#
+# i.MX PM Domains
+#
+# end of i.MX PM Domains
+
+#
+# Qualcomm PM Domains
+#
+# end of Qualcomm PM Domains
+# end of PM Domains
+
 # CONFIG_PM_DEVFREQ is not set
 # CONFIG_EXTCON is not set
 # CONFIG_MEMORY is not set
@@ -2592,6 +2716,7 @@ CONFIG_INTEL_IOMMU_FLOPPY_WA=y
 #
 # IRQ chip support
 #
+# CONFIG_LAN966X_OIC is not set
 # end of IRQ chip support
 
 # CONFIG_IPACK_BUS is not set
@@ -2621,6 +2746,7 @@ CONFIG_GENERIC_PHY=y
 #
 # Performance monitor support
 #
+# CONFIG_DWC_PCIE_PMU is not set
 # end of Performance monitor support
 
 # CONFIG_RAS is not set
@@ -2638,6 +2764,7 @@ CONFIG_LIBNVDIMM=y
 # CONFIG_DAX is not set
 CONFIG_NVMEM=y
 # CONFIG_NVMEM_SYSFS is not set
+# CONFIG_NVMEM_LAYOUTS is not set
 # CONFIG_NVMEM_RMEM is not set
 
 #
@@ -2662,6 +2789,8 @@ CONFIG_NVMEM=y
 CONFIG_DCACHE_WORD_ACCESS=y
 # CONFIG_VALIDATE_FS_PARSER is not set
 CONFIG_FS_IOMAP=y
+CONFIG_BUFFER_HEAD=y
+CONFIG_LEGACY_DIRECT_IO=y
 # CONFIG_EXT2_FS is not set
 # CONFIG_EXT3_FS is not set
 CONFIG_EXT4_FS=y
@@ -2679,6 +2808,7 @@ CONFIG_FS_MBCACHE=y
 # CONFIG_BTRFS_FS is not set
 # CONFIG_NILFS2_FS is not set
 # CONFIG_F2FS_FS is not set
+# CONFIG_BCACHEFS_FS is not set
 # CONFIG_EXPORTFS_BLOCK_OPS is not set
 CONFIG_FILE_LOCKING=y
 # CONFIG_FS_ENCRYPTION is not set
@@ -2687,7 +2817,6 @@ CONFIG_FILE_LOCKING=y
 # CONFIG_INOTIFY_USER is not set
 # CONFIG_FANOTIFY is not set
 # CONFIG_QUOTA is not set
-# CONFIG_AUTOFS4_FS is not set
 # CONFIG_AUTOFS_FS is not set
 # CONFIG_FUSE_FS is not set
 # CONFIG_OVERLAY_FS is not set
@@ -2695,7 +2824,6 @@ CONFIG_FILE_LOCKING=y
 #
 # Caches
 #
-# CONFIG_FSCACHE is not set
 # end of Caches
 
 #
@@ -2718,8 +2846,8 @@ CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
 # CONFIG_FAT_DEFAULT_UTF8 is not set
 CONFIG_EXFAT_FS=y
 CONFIG_EXFAT_DEFAULT_IOCHARSET="utf8"
-# CONFIG_NTFS_FS is not set
 # CONFIG_NTFS3_FS is not set
+# CONFIG_NTFS_FS is not set
 # end of DOS/FAT/EXFAT/NT Filesystems
 
 #
@@ -2735,7 +2863,6 @@ CONFIG_KERNFS=y
 CONFIG_SYSFS=y
 # CONFIG_TMPFS is not set
 # CONFIG_HUGETLBFS is not set
-CONFIG_ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP=y
 CONFIG_ARCH_HAS_GIGANTIC_PAGE=y
 # CONFIG_CONFIGFS_FS is not set
 # CONFIG_EFIVAR_FS is not set
@@ -2807,9 +2934,11 @@ CONFIG_IO_WQ=y
 #
 # CONFIG_KEYS is not set
 # CONFIG_SECURITY_DMESG_RESTRICT is not set
+CONFIG_PROC_MEM_ALWAYS_FORCE=y
+# CONFIG_PROC_MEM_FORCE_PTRACE is not set
+# CONFIG_PROC_MEM_NO_FORCE is not set
 CONFIG_SECURITYFS=y
 # CONFIG_INTEL_TXT is not set
-CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=y
 CONFIG_HARDENED_USERCOPY=y
 # CONFIG_FORTIFY_SOURCE is not set
 # CONFIG_STATIC_USERMODEHELPER is not set
@@ -2833,6 +2962,13 @@ CONFIG_INIT_STACK_NONE=y
 # CONFIG_INIT_ON_FREE_DEFAULT_ON is not set
 # end of Memory initialization
 
+#
+# Hardening of kernel data structures
+#
+# CONFIG_LIST_HARDENED is not set
+# CONFIG_BUG_ON_DATA_CORRUPTION is not set
+# end of Hardening of kernel data structures
+
 CONFIG_RANDSTRUCT_NONE=y
 # CONFIG_RANDSTRUCT_FULL is not set
 # CONFIG_RANDSTRUCT_PERFORMANCE is not set
@@ -2848,14 +2984,17 @@ CONFIG_CRYPTO_ALGAPI=y
 CONFIG_CRYPTO_ALGAPI2=y
 CONFIG_CRYPTO_AEAD=y
 CONFIG_CRYPTO_AEAD2=y
+CONFIG_CRYPTO_SIG2=y
 CONFIG_CRYPTO_SKCIPHER=y
 CONFIG_CRYPTO_SKCIPHER2=y
 CONFIG_CRYPTO_HASH=y
 CONFIG_CRYPTO_HASH2=y
 CONFIG_CRYPTO_RNG=y
 CONFIG_CRYPTO_RNG2=y
+CONFIG_CRYPTO_RNG_DEFAULT=y
 CONFIG_CRYPTO_AKCIPHER2=y
 CONFIG_CRYPTO_KPP2=y
+CONFIG_CRYPTO_KPP=y
 CONFIG_CRYPTO_ACOMP2=y
 CONFIG_CRYPTO_MANAGER=y
 CONFIG_CRYPTO_MANAGER2=y
@@ -2875,10 +3014,10 @@ CONFIG_CRYPTO_SIMD=y
 #
 # CONFIG_CRYPTO_RSA is not set
 # CONFIG_CRYPTO_DH is not set
-# CONFIG_CRYPTO_ECDH is not set
+CONFIG_CRYPTO_ECC=y
+CONFIG_CRYPTO_ECDH=y
 # CONFIG_CRYPTO_ECDSA is not set
 # CONFIG_CRYPTO_ECRDSA is not set
-# CONFIG_CRYPTO_SM2 is not set
 # CONFIG_CRYPTO_CURVE25519 is not set
 # end of Public-key cryptography
 
@@ -2905,14 +3044,12 @@ CONFIG_CRYPTO_AES=y
 # CONFIG_CRYPTO_ADIANTUM is not set
 # CONFIG_CRYPTO_CHACHA20 is not set
 CONFIG_CRYPTO_CBC=y
-# CONFIG_CRYPTO_CFB is not set
 # CONFIG_CRYPTO_CTR is not set
 # CONFIG_CRYPTO_CTS is not set
 CONFIG_CRYPTO_ECB=y
 # CONFIG_CRYPTO_HCTR2 is not set
 # CONFIG_CRYPTO_KEYWRAP is not set
 # CONFIG_CRYPTO_LRW is not set
-# CONFIG_CRYPTO_OFB is not set
 # CONFIG_CRYPTO_PCBC is not set
 CONFIG_CRYPTO_XTS=y
 # end of Length-preserving ciphers and modes
@@ -2944,7 +3081,7 @@ CONFIG_CRYPTO_MD5=y
 CONFIG_CRYPTO_SHA1=y
 CONFIG_CRYPTO_SHA256=y
 CONFIG_CRYPTO_SHA512=y
-# CONFIG_CRYPTO_SHA3 is not set
+CONFIG_CRYPTO_SHA3=y
 # CONFIG_CRYPTO_SM3_GENERIC is not set
 # CONFIG_CRYPTO_STREEBOG is not set
 # CONFIG_CRYPTO_VMAC is not set
@@ -2976,8 +3113,15 @@ CONFIG_CRYPTO_CRC32C=y
 # Random number generation
 #
 # CONFIG_CRYPTO_ANSI_CPRNG is not set
-# CONFIG_CRYPTO_DRBG_MENU is not set
-# CONFIG_CRYPTO_JITTERENTROPY is not set
+CONFIG_CRYPTO_DRBG_MENU=y
+CONFIG_CRYPTO_DRBG_HMAC=y
+# CONFIG_CRYPTO_DRBG_HASH is not set
+# CONFIG_CRYPTO_DRBG_CTR is not set
+CONFIG_CRYPTO_DRBG=y
+CONFIG_CRYPTO_JITTERENTROPY=y
+CONFIG_CRYPTO_JITTERENTROPY_MEMORY_BLOCKS=64
+CONFIG_CRYPTO_JITTERENTROPY_MEMORY_BLOCKSIZE=32
+CONFIG_CRYPTO_JITTERENTROPY_OSR=1
 # end of Random number generation
 
 #
@@ -2987,9 +3131,9 @@ CONFIG_CRYPTO_USER_API=y
 CONFIG_CRYPTO_USER_API_HASH=y
 CONFIG_CRYPTO_USER_API_SKCIPHER=y
 CONFIG_CRYPTO_USER_API_RNG=y
+# CONFIG_CRYPTO_USER_API_RNG_CAVP is not set
 CONFIG_CRYPTO_USER_API_AEAD=y
 # CONFIG_CRYPTO_USER_API_ENABLE_OBSOLETE is not set
-# CONFIG_CRYPTO_STATS is not set
 # end of Userspace interface
 
 CONFIG_CRYPTO_HASH_INFO=y
@@ -3015,6 +3159,8 @@ CONFIG_CRYPTO_AES_NI_INTEL=y
 # CONFIG_CRYPTO_TWOFISH_X86_64_3WAY is not set
 # CONFIG_CRYPTO_TWOFISH_AVX_X86_64 is not set
 # CONFIG_CRYPTO_ARIA_AESNI_AVX_X86_64 is not set
+# CONFIG_CRYPTO_ARIA_AESNI_AVX2_X86_64 is not set
+# CONFIG_CRYPTO_ARIA_GFNI_AVX512_X86_64 is not set
 # CONFIG_CRYPTO_CHACHA20_X86_64 is not set
 # CONFIG_CRYPTO_AEGIS128_AESNI_SSE2 is not set
 # CONFIG_CRYPTO_NHPOLY1305_SSE2 is not set
@@ -3049,7 +3195,6 @@ CONFIG_GENERIC_NET_UTILS=y
 # CONFIG_CORDIC is not set
 # CONFIG_PRIME_NUMBERS is not set
 CONFIG_RATIONAL=y
-CONFIG_GENERIC_PCI_IOMAP=y
 CONFIG_GENERIC_IOMAP=y
 CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
 CONFIG_ARCH_HAS_FAST_MULTIPLIER=y
@@ -3060,6 +3205,8 @@ CONFIG_ARCH_USE_SYM_ANNOTATIONS=y
 #
 CONFIG_CRYPTO_LIB_UTILS=y
 CONFIG_CRYPTO_LIB_AES=y
+CONFIG_CRYPTO_LIB_AESCFB=y
+CONFIG_CRYPTO_LIB_GF128MUL=y
 CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y
 # CONFIG_CRYPTO_LIB_CHACHA is not set
 # CONFIG_CRYPTO_LIB_CURVE25519 is not set
@@ -3090,7 +3237,6 @@ CONFIG_LIBCRC32C=y
 CONFIG_XZ_DEC=y
 CONFIG_XZ_DEC_X86=y
 # CONFIG_XZ_DEC_POWERPC is not set
-# CONFIG_XZ_DEC_IA64 is not set
 # CONFIG_XZ_DEC_ARM is not set
 # CONFIG_XZ_DEC_ARMTHUMB is not set
 # CONFIG_XZ_DEC_SPARC is not set
@@ -3103,26 +3249,32 @@ CONFIG_REED_SOLOMON=y
 CONFIG_REED_SOLOMON_DEC8=y
 CONFIG_INTERVAL_TREE=y
 CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
 CONFIG_HAS_IOPORT_MAP=y
 CONFIG_HAS_DMA=y
 CONFIG_DMA_OPS=y
+CONFIG_NEED_SG_DMA_FLAGS=y
 CONFIG_NEED_SG_DMA_LENGTH=y
 CONFIG_NEED_DMA_MAP_STATE=y
 CONFIG_ARCH_DMA_ADDR_T_64BIT=y
 CONFIG_SWIOTLB=y
+# CONFIG_SWIOTLB_DYNAMIC is not set
+CONFIG_DMA_NEED_SYNC=y
 # CONFIG_DMA_API_DEBUG is not set
 CONFIG_SGL_ALLOC=y
-# CONFIG_FORCE_NR_CPUS is not set
 CONFIG_CPU_RMAP=y
 CONFIG_DQL=y
 CONFIG_GLOB=y
 # CONFIG_GLOB_SELFTEST is not set
 CONFIG_NLATTR=y
 # CONFIG_IRQ_POLL is not set
+CONFIG_DIMLIB=y
 CONFIG_UCS2_STRING=y
 CONFIG_HAVE_GENERIC_VDSO=y
 CONFIG_GENERIC_GETTIMEOFDAY=y
 CONFIG_GENERIC_VDSO_TIME_NS=y
+CONFIG_GENERIC_VDSO_OVERFLOW_PROTECT=y
+CONFIG_VDSO_GETRANDOM=y
 CONFIG_FONT_SUPPORT=y
 # CONFIG_FONTS is not set
 CONFIG_FONT_8x8=y
@@ -3130,12 +3282,16 @@ CONFIG_FONT_8x16=y
 CONFIG_SG_POOL=y
 CONFIG_ARCH_HAS_PMEM_API=y
 CONFIG_MEMREGION=y
+CONFIG_ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION=y
 CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE=y
 CONFIG_ARCH_HAS_COPY_MC=y
 CONFIG_ARCH_STACKWALK=y
 CONFIG_SBITMAP=y
+# CONFIG_LWQ_TEST is not set
 # end of Library routines
 
+CONFIG_FIRMWARE_TABLE=y
+
 #
 # Kernel hacking
 #
@@ -3162,7 +3318,7 @@ CONFIG_DEBUG_KERNEL=y
 #
 # Compile-time checks and compiler options
 #
-CONFIG_AS_HAS_NON_CONST_LEB128=y
+CONFIG_AS_HAS_NON_CONST_ULEB128=y
 CONFIG_DEBUG_INFO_NONE=y
 # CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT is not set
 # CONFIG_DEBUG_INFO_DWARF4 is not set
@@ -3189,7 +3345,7 @@ CONFIG_MAGIC_SYSRQ_SERIAL_SEQUENCE=""
 # CONFIG_DEBUG_FS is not set
 CONFIG_HAVE_ARCH_KGDB=y
 # CONFIG_KGDB is not set
-CONFIG_ARCH_HAS_UBSAN_SANITIZE_ALL=y
+CONFIG_ARCH_HAS_UBSAN=y
 # CONFIG_UBSAN is not set
 CONFIG_HAVE_ARCH_KCSAN=y
 # end of Generic Kernel Debugging Instruments
@@ -3209,15 +3365,15 @@ CONFIG_HAVE_ARCH_KCSAN=y
 # CONFIG_DEBUG_PAGEALLOC is not set
 # CONFIG_SLUB_DEBUG is not set
 # CONFIG_PAGE_OWNER is not set
-# CONFIG_PAGE_TABLE_CHECK is not set
 # CONFIG_PAGE_POISONING is not set
 # CONFIG_DEBUG_RODATA_TEST is not set
 CONFIG_ARCH_HAS_DEBUG_WX=y
 # CONFIG_DEBUG_WX is not set
 CONFIG_GENERIC_PTDUMP=y
-# CONFIG_DEBUG_OBJECTS is not set
 CONFIG_HAVE_DEBUG_KMEMLEAK=y
 # CONFIG_DEBUG_KMEMLEAK is not set
+# CONFIG_PER_VMA_LOCK_STATS is not set
+# CONFIG_DEBUG_OBJECTS is not set
 # CONFIG_DEBUG_STACK_USAGE is not set
 # CONFIG_SCHED_STACK_END_CHECK is not set
 CONFIG_ARCH_HAS_DEBUG_VM_PGTABLE=y
@@ -3229,6 +3385,7 @@ CONFIG_ARCH_HAS_DEBUG_VIRTUAL=y
 # CONFIG_DEBUG_PER_CPU_MAPS is not set
 CONFIG_ARCH_SUPPORTS_KMAP_LOCAL_FORCE_MAP=y
 # CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP is not set
+# CONFIG_MEM_ALLOC_PROFILING is not set
 CONFIG_HAVE_ARCH_KASAN=y
 CONFIG_HAVE_ARCH_KASAN_VMALLOC=y
 CONFIG_CC_HAS_KASAN_GENERIC=y
@@ -3250,21 +3407,26 @@ CONFIG_PANIC_TIMEOUT=0
 CONFIG_LOCKUP_DETECTOR=y
 CONFIG_SOFTLOCKUP_DETECTOR=y
 # CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
-CONFIG_HARDLOCKUP_DETECTOR_PERF=y
-CONFIG_HARDLOCKUP_CHECK_TIMESTAMP=y
+CONFIG_HAVE_HARDLOCKUP_DETECTOR_BUDDY=y
 CONFIG_HARDLOCKUP_DETECTOR=y
+# CONFIG_HARDLOCKUP_DETECTOR_PREFER_BUDDY is not set
+CONFIG_HARDLOCKUP_DETECTOR_PERF=y
+# CONFIG_HARDLOCKUP_DETECTOR_BUDDY is not set
+# CONFIG_HARDLOCKUP_DETECTOR_ARCH is not set
+CONFIG_HARDLOCKUP_DETECTOR_COUNTS_HRTIMER=y
+CONFIG_HARDLOCKUP_CHECK_TIMESTAMP=y
 # CONFIG_BOOTPARAM_HARDLOCKUP_PANIC is not set
 CONFIG_DETECT_HUNG_TASK=y
 CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=120
 # CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set
 CONFIG_WQ_WATCHDOG=y
+# CONFIG_WQ_CPU_INTENSIVE_REPORT is not set
 # CONFIG_TEST_LOCKUP is not set
 # end of Debug Oops, Lockups and Hangs
 
 #
 # Scheduler Debugging
 #
-# CONFIG_SCHED_DEBUG is not set
 # CONFIG_SCHEDSTATS is not set
 # end of Scheduler Debugging
 
@@ -3290,6 +3452,7 @@ CONFIG_LOCK_DEBUGGING_SUPPORT=y
 # CONFIG_CSD_LOCK_WAIT_DEBUG is not set
 # end of Lock Debugging (spinlocks, mutexes, etc...)
 
+# CONFIG_NMI_CHECK_CPU is not set
 # CONFIG_DEBUG_IRQFLAGS is not set
 # CONFIG_STACKTRACE is not set
 # CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set
@@ -3302,12 +3465,9 @@ CONFIG_LOCK_DEBUGGING_SUPPORT=y
 # CONFIG_DEBUG_PLIST is not set
 # CONFIG_DEBUG_SG is not set
 # CONFIG_DEBUG_NOTIFIERS is not set
-# CONFIG_BUG_ON_DATA_CORRUPTION is not set
 # CONFIG_DEBUG_MAPLE_TREE is not set
 # end of Debug kernel data structures
 
-# CONFIG_DEBUG_CREDENTIALS is not set
-
 #
 # RCU Debugging
 #
@@ -3316,6 +3476,7 @@ CONFIG_LOCK_DEBUGGING_SUPPORT=y
 # CONFIG_RCU_REF_SCALE_TEST is not set
 CONFIG_RCU_CPU_STALL_TIMEOUT=21
 CONFIG_RCU_EXP_CPU_STALL_TIMEOUT=0
+# CONFIG_RCU_CPU_STALL_CPUTIME is not set
 # CONFIG_RCU_TRACE is not set
 # CONFIG_RCU_EQS_DEBUG is not set
 # end of RCU Debugging
@@ -3335,6 +3496,7 @@ CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
 CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
 CONFIG_HAVE_FENTRY=y
 CONFIG_HAVE_OBJTOOL_MCOUNT=y
+CONFIG_HAVE_OBJTOOL_NOP_MCOUNT=y
 CONFIG_HAVE_C_RECORDMCOUNT=y
 CONFIG_HAVE_BUILDTIME_MCOUNT_SORT=y
 CONFIG_TRACING_SUPPORT=y
diff --git a/modules/coreboot b/modules/coreboot
index 23de9a45..1586a3ac 100644
--- a/modules/coreboot
+++ b/modules/coreboot
@@ -93,8 +93,7 @@ $(eval $(call coreboot_module,purism,24.02.01))
 
 # MSI and Nitropad NV41 / NS50 boards are based on Dasharo coreboot port
 coreboot-dasharo_repo := https://github.com/dasharo/coreboot
-coreboot-dasharo_commit_hash := 3a9aa3a4692f3dd49732f5b4e3ec54be385f0969
-coreboot-dasharo_patch_version := unreleased
+coreboot-dasharo_commit_hash := db1d9cd59d0d7d5b708bbdf8670780914061410c
 $(eval $(call coreboot_module,dasharo,))
 
 # Check that the board configured the coreboot version correctly
diff --git a/patches/coreboot-dasharo-unreleased/0001-tpm_pirq-not_conditional.patch b/patches/coreboot-dasharo-unreleased/0001-tpm_pirq-not_conditional.patch
deleted file mode 100644
index 6f626ae3..00000000
--- a/patches/coreboot-dasharo-unreleased/0001-tpm_pirq-not_conditional.patch
+++ /dev/null
@@ -1,27 +0,0 @@
-From 6cd77aa95a7ab46771874b72c7dba6b3600d9b29 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Micha=C5=82=20=C5=BBygowski?= <michal.zygowski@3mdeb.com>
-Date: Mon, 13 May 2024 09:31:27 +0200
-Subject: [PATCH] src/mainboard/clevo/adl-p/Kconfig: Add missing TPM PIRQ for
- NV41
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
----
- src/mainboard/clevo/adl-p/Kconfig | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/src/mainboard/clevo/adl-p/Kconfig b/src/mainboard/clevo/adl-p/Kconfig
-index 6e4b679d4d1..e9bcf53c7be 100644
---- a/src/mainboard/clevo/adl-p/Kconfig
-+++ b/src/mainboard/clevo/adl-p/Kconfig
-@@ -115,7 +115,7 @@ config FMDFILE
- 	default "src/mainboard/\$(CONFIG_MAINBOARD_DIR)/vboot-rwa.fmd" if VBOOT && VBOOT_SLOTS_RW_A
- 
- config TPM_PIRQ
--	default 0x27 if BOARD_CLEVO_NS50PU_BASE # GPP_E1
-+	default 0x27 # GPP_E1
- 
- config SOC_INTEL_CSE_SEND_EOP_EARLY
- 	default n
diff --git a/patches/coreboot-dasharo-unreleased/0004-cbmem_tpm-clear_whole_log_on_creation.patch b/patches/coreboot-dasharo-unreleased/0004-cbmem_tpm-clear_whole_log_on_creation.patch
deleted file mode 100644
index adb93978..00000000
--- a/patches/coreboot-dasharo-unreleased/0004-cbmem_tpm-clear_whole_log_on_creation.patch
+++ /dev/null
@@ -1,37 +0,0 @@
-From b83a7607203d285b76e94ffd2013c55b184f5d42 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Micha=C5=82=20=C5=BBygowski?= <michal.zygowski@3mdeb.com>
-Date: Wed, 30 Oct 2024 10:50:37 +0100
-Subject: [PATCH] security/tpm/tspi/log-tpm1.c: Clear whole log area on
- creation
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-The log area was not entirely cleared on creation resulting in
-garbage after the last valid lgo entry. It caused the cbmem utility
-to parse invalid events and access data outside the log area.
-In the TPM2 log sources, the entire area is being cleared, thus the
-issue has not been observed.
-
-Change-Id: I7c780b62b1c6507e1dd1806b20b0270e364cde3d
-Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
----
- src/security/tpm/tspi/log-tpm1.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/src/security/tpm/tspi/log-tpm1.c b/src/security/tpm/tspi/log-tpm1.c
-index 481b569cd5..453e74b4e8 100644
---- a/src/security/tpm/tspi/log-tpm1.c
-+++ b/src/security/tpm/tspi/log-tpm1.c
-@@ -33,7 +33,7 @@ void *tpm1_log_cbmem_init(void)
- 		if (!tclt)
- 			return NULL;
- 
--		memset(tclt, 0, sizeof(*tclt));
-+		memset(tclt, 0, tpm_log_len);
- 		hdr = &tclt->spec_id;
- 
- 		/* Fill in first "header" entry. */
--- 
-2.39.5
-

From 4394052b7210cbdb7da0e7cc4a6c27370cde514e Mon Sep 17 00:00:00 2001
From: Thierry Laurion <insurgo@riseup.net>
Date: Fri, 22 Nov 2024 11:36:08 -0500
Subject: [PATCH 02/37] modules/linux: add Linux 6.11.9

Signed-off-by: Thierry Laurion <insurgo@riseup.net>
---
 .../novacustom-v540tu.config                  |  2 +-
 modules/linux                                 |  5 ++-
 patches/linux-6.11.9/0001-fake-acpi.patch     | 32 +++++++++++++++++++
 .../linux-6.11.9/0010-winterfell-ahci.patch   | 18 +++++++++++
 4 files changed, 55 insertions(+), 2 deletions(-)
 create mode 100644 patches/linux-6.11.9/0001-fake-acpi.patch
 create mode 100644 patches/linux-6.11.9/0010-winterfell-ahci.patch

diff --git a/boards/novacustom-v540tu/novacustom-v540tu.config b/boards/novacustom-v540tu/novacustom-v540tu.config
index a4935210..7938254f 100644
--- a/boards/novacustom-v540tu/novacustom-v540tu.config
+++ b/boards/novacustom-v540tu/novacustom-v540tu.config
@@ -2,7 +2,7 @@
 
 export CONFIG_COREBOOT=y
 export CONFIG_COREBOOT_VERSION=dasharo
-export CONFIG_LINUX_VERSION=6.1.8
+export CONFIG_LINUX_VERSION=6.11.9
 
 CONFIG_COREBOOT_CONFIG=config/coreboot-novacustom-v540tu.config
 CONFIG_LINUX_CONFIG=config/linux-nitropad-x.config
diff --git a/modules/linux b/modules/linux
index 416d2b8d..464130f9 100644
--- a/modules/linux
+++ b/modules/linux
@@ -34,6 +34,9 @@ linux_hash := 40f014d53e81f204f6d2a364aae4201ae07970dd1b70dc602d7c66c1a140f558
 else ifeq "$(CONFIG_LINUX_VERSION)" "6.1.8"
 linux_version := 6.1.8
 linux_hash := b60bb53ab8ba370a270454b11e93d41af29126fc72bd6ede517673e2e57b816d
+else ifeq "$(CONFIG_LINUX_VERSION)" "6.11.9"
+linux_version := 6.11.9
+linux_hash := 75658a7aa3bd9598c96ee1e5862c5e1d34fced75c28d825c727a1510a6f384b4
 else
 $(error "$(BOARD): does not specify linux kernel version under CONFIG_LINUX_VERSION")
 endif 
@@ -280,7 +283,7 @@ linux.save_in_versioned_defconfig_format:
 
 # This one can be used in kernel version bump, which will accept all new defconfig options for the new version.
 #  PLEASE VERIFY CHANGES AND KEEP THINGS MINIMAL IN PRs.
-linux.save_in_oldconfig_format_in_place:
+linux.save_in_olddefconfig_format_in_place:
 	mkdir -p "$(build)/$(linux_dir)" \
 	&& cp "$(pwd)/$(linux_kconfig)" "$(build)/$(linux_dir)/.config" \
 	&& $(MAKE) -C "$(build)/$(linux_base_dir)" \
diff --git a/patches/linux-6.11.9/0001-fake-acpi.patch b/patches/linux-6.11.9/0001-fake-acpi.patch
new file mode 100644
index 00000000..0c8b3b54
--- /dev/null
+++ b/patches/linux-6.11.9/0001-fake-acpi.patch
@@ -0,0 +1,32 @@
+diff --recursive -u ./clean/linux-4.9.80/drivers/acpi/acpica/evxfevnt.c linux-4.9.80/drivers/acpi/acpica/evxfevnt.c
+--- ./clean/linux-4.9.80/drivers/acpi/acpica/evxfevnt.c	2018-02-03 11:05:43.000000000 -0500
++++ linux-4.9.80/drivers/acpi/acpica/evxfevnt.c	2018-02-07 15:51:28.786502597 -0500
+@@ -111,6 +111,8 @@
+ 	}
+ 
+ 	ACPI_ERROR((AE_INFO, "Hardware did not enter ACPI mode"));
++printk("%s:%d faking ACPI mode\n", __func__, __LINE__);
++	return_ACPI_STATUS(AE_OK);
+ 	return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE);
+ }
+ 
+diff --recursive -u ./clean/linux-4.9.80/drivers/acpi/acpica/hwacpi.c linux-4.9.80/drivers/acpi/acpica/hwacpi.c
+--- ./clean/linux-4.9.80/drivers/acpi/acpica/hwacpi.c	2018-02-03 11:05:43.000000000 -0500
++++ linux-4.9.80/drivers/acpi/acpica/hwacpi.c	2018-02-07 15:51:35.126557868 -0500
+@@ -168,12 +168,16 @@
+ 
+ 	status = acpi_read_bit_register(ACPI_BITREG_SCI_ENABLE, &value);
+ 	if (ACPI_FAILURE(status)) {
++printk("%s:%d faking ACPI mode\n", __func__, __LINE__);
++		return_UINT32(ACPI_SYS_MODE_ACPI);
+ 		return_UINT32(ACPI_SYS_MODE_LEGACY);
+ 	}
+ 
+ 	if (value) {
+ 		return_UINT32(ACPI_SYS_MODE_ACPI);
+ 	} else {
++//printk("%s:%d faking ACPI mode\n", __func__, __LINE__);
++//		return_UINT32(ACPI_SYS_MODE_ACPI);
+ 		return_UINT32(ACPI_SYS_MODE_LEGACY);
+ 	}
+ }
diff --git a/patches/linux-6.11.9/0010-winterfell-ahci.patch b/patches/linux-6.11.9/0010-winterfell-ahci.patch
new file mode 100644
index 00000000..7f241773
--- /dev/null
+++ b/patches/linux-6.11.9/0010-winterfell-ahci.patch
@@ -0,0 +1,18 @@
+diff --recursive -u ./clean/linux-4.9.80/drivers/ata/libahci.c linux-4.9.80/drivers/ata/libahci.c
+--- ./clean/linux-4.9.80/drivers/ata/libahci.c	2018-02-03 11:05:43.000000000 -0500
++++ linux-4.9.80/drivers/ata/libahci.c	2018-02-07 18:02:32.526535910 -0500
+@@ -537,8 +537,12 @@
+ 	}
+ 
+ 	/* fabricate port_map from cap.nr_ports for < AHCI 1.3 */
+-	if (!port_map && vers < 0x10300) {
+-		port_map = (1 << ahci_nr_ports(cap)) - 1;
++	if (!port_map) { //  && vers < 0x10300) {
++		printk("%s: saved_port=%02x\n", __func__, hpriv->saved_port_map);
++		writel(0x1, mmio + HOST_PORTS_IMPL);
++		port_map = readl(mmio + HOST_PORTS_IMPL);
++
++		//port_map = (1 << ahci_nr_ports(cap)) - 1;
+ 		dev_warn(dev, "forcing PORTS_IMPL to 0x%lx\n", port_map);
+ 
+ 		/* write the fixed up value to the PI register */

From 059a60e43ef38d7b7a6c0da94adeb8f1f61d4219 Mon Sep 17 00:00:00 2001
From: Thierry Laurion <insurgo@riseup.net>
Date: Fri, 22 Nov 2024 12:24:17 -0500
Subject: [PATCH 03/37] .circleci/config.yml nitropad-nv41 name changed ->
 novacustom_nv4x_adl

Signed-off-by: Thierry Laurion <insurgo@riseup.net>
---
 .circleci/config.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 0c79d75a..1db3a88d 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -523,7 +523,7 @@ workflows:
           target: novacustom-v540tu
           subcommand: ""
           requires:
-            - nitropad-nv41
+            - novacustom_nv4x_adl
 
       # coreboot 4.11
       - build:

From cf02a2914e45f841448f8c53b338307375e3e072 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Thu, 28 Nov 2024 17:07:59 +0100
Subject: [PATCH 04/37] config/coreboot-novacustom-v540tu.config: disable debug
 console
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 config/coreboot-novacustom-v540tu.config | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/config/coreboot-novacustom-v540tu.config b/config/coreboot-novacustom-v540tu.config
index 363f525c..4f84948c 100644
--- a/config/coreboot-novacustom-v540tu.config
+++ b/config/coreboot-novacustom-v540tu.config
@@ -213,7 +213,7 @@ CONFIG_PC_CMOS_BASE_PORT_BANK1=0x72
 CONFIG_FSP_TEMP_RAM_SIZE=0x20000
 CONFIG_EC_GPE_SCI=0x50
 CONFIG_TPM_MEASURED_BOOT=y
-CONFIG_LINUX_COMMAND_LINE="debug console=uart,mmio32,0xfe02c000"
+CONFIG_LINUX_COMMAND_LINE="debug"
 CONFIG_BOARD_ROMSIZE_KB_32768=y
 # CONFIG_COREBOOT_ROMSIZE_KB_256 is not set
 # CONFIG_COREBOOT_ROMSIZE_KB_512 is not set

From 4a3667b78c06ea7452ed1a154a3eb7f72d5cb822 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Thu, 28 Nov 2024 17:08:33 +0100
Subject: [PATCH 05/37] boards/novacustom-v540tu/novacustom-v540tu.config:
 remove unneeded debug options
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 boards/novacustom-v540tu/novacustom-v540tu.config | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/boards/novacustom-v540tu/novacustom-v540tu.config b/boards/novacustom-v540tu/novacustom-v540tu.config
index 7938254f..042fa2ff 100644
--- a/boards/novacustom-v540tu/novacustom-v540tu.config
+++ b/boards/novacustom-v540tu/novacustom-v540tu.config
@@ -8,8 +8,8 @@ CONFIG_COREBOOT_CONFIG=config/coreboot-novacustom-v540tu.config
 CONFIG_LINUX_CONFIG=config/linux-nitropad-x.config
 
 #Enable DEBUG output
-export CONFIG_DEBUG_OUTPUT=y
-export CONFIG_ENABLE_FUNCTION_TRACING_OUTPUT=y
+#export CONFIG_DEBUG_OUTPUT=y
+#export CONFIG_ENABLE_FUNCTION_TRACING_OUTPUT=y
 #Enable TPM2 pcap output under /tmp
 #export CONFIG_TPM2_CAPTURE_PCAP=y
 

From b6f5c6d2450bec382053ba045519619525f9d2bc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Fri, 29 Nov 2024 18:50:45 +0100
Subject: [PATCH 06/37] modules/coreboot: update comment about Dasharo coreboot
 fork
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 modules/coreboot | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/modules/coreboot b/modules/coreboot
index 1586a3ac..aaaabf7b 100644
--- a/modules/coreboot
+++ b/modules/coreboot
@@ -91,7 +91,8 @@ coreboot-purism_repo := https://source.puri.sm/firmware/coreboot.git
 coreboot-purism_commit_hash := bea9947a1279be7d4a72b38a601d0288d10d1cb8
 $(eval $(call coreboot_module,purism,24.02.01))
 
-# MSI and Nitropad NV41 / NS50 boards are based on Dasharo coreboot port
+# MSI and NovaCustom NV4xPZ, NS5xPU, V540TU, V560TU boards are based on Dasharo
+# coreboot fork, based on upstream coreboot version 24.02
 coreboot-dasharo_repo := https://github.com/dasharo/coreboot
 coreboot-dasharo_commit_hash := db1d9cd59d0d7d5b708bbdf8670780914061410c
 $(eval $(call coreboot_module,dasharo,))

From 0cdba412efd32347afe5db35f821dcb57a79c029 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Mon, 2 Dec 2024 12:22:11 +0100
Subject: [PATCH 07/37] modules/coreboot: dasharo: reuse 24.02.1 toolchain
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 modules/coreboot | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/coreboot b/modules/coreboot
index aaaabf7b..e37cd6db 100644
--- a/modules/coreboot
+++ b/modules/coreboot
@@ -95,7 +95,7 @@ $(eval $(call coreboot_module,purism,24.02.01))
 # coreboot fork, based on upstream coreboot version 24.02
 coreboot-dasharo_repo := https://github.com/dasharo/coreboot
 coreboot-dasharo_commit_hash := db1d9cd59d0d7d5b708bbdf8670780914061410c
-$(eval $(call coreboot_module,dasharo,))
+$(eval $(call coreboot_module,dasharo,24.02.01))
 
 # Check that the board configured the coreboot version correctly
 ifeq "$(CONFIG_COREBOOT_VERSION)" ""

From ad6605d84b797606cfe4824801de4d5616f6f586 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Fri, 29 Nov 2024 19:20:30 +0100
Subject: [PATCH 08/37] config/coreboot-novacustom-v540tu.config: set version
 to rc1
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 config/coreboot-novacustom-v540tu.config | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/config/coreboot-novacustom-v540tu.config b/config/coreboot-novacustom-v540tu.config
index 4f84948c..d1a51a7a 100644
--- a/config/coreboot-novacustom-v540tu.config
+++ b/config/coreboot-novacustom-v540tu.config
@@ -7,7 +7,7 @@
 # General setup
 #
 CONFIG_COREBOOT_BUILD=y
-CONFIG_LOCALVERSION="v0.9.0-rc6"
+CONFIG_LOCALVERSION="v0.9.0-rc1"
 CONFIG_CBFS_PREFIX="fallback"
 CONFIG_COMPILER_GCC=y
 # CONFIG_COMPILER_LLVM_CLANG is not set

From 0f339496a715db4a44629854b8d208b7b010ad12 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Fri, 29 Nov 2024 19:20:59 +0100
Subject: [PATCH 09/37] Add NovaCustom V560TU
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

as a copy of V540TU

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 .../novacustom-v560tu.config                  |  71 ++
 config/coreboot-novacustom-v560tu.config      | 943 ++++++++++++++++++
 2 files changed, 1014 insertions(+)
 create mode 100644 boards/novacustom-v560tu/novacustom-v560tu.config
 create mode 100644 config/coreboot-novacustom-v560tu.config

diff --git a/boards/novacustom-v560tu/novacustom-v560tu.config b/boards/novacustom-v560tu/novacustom-v560tu.config
new file mode 100644
index 00000000..b3665105
--- /dev/null
+++ b/boards/novacustom-v560tu/novacustom-v560tu.config
@@ -0,0 +1,71 @@
+# NovaCustom V54 MTL (integrated graphics) board configuration
+
+export CONFIG_COREBOOT=y
+export CONFIG_COREBOOT_VERSION=dasharo
+export CONFIG_LINUX_VERSION=6.11.9
+
+CONFIG_COREBOOT_CONFIG=config/coreboot-novacustom-v560tu.config
+CONFIG_LINUX_CONFIG=config/linux-nitropad-x.config
+
+#Enable DEBUG output
+#export CONFIG_DEBUG_OUTPUT=y
+#export CONFIG_ENABLE_FUNCTION_TRACING_OUTPUT=y
+#Enable TPM2 pcap output under /tmp
+#export CONFIG_TPM2_CAPTURE_PCAP=y
+
+#On-demand hardware support (modules.cpio)
+CONFIG_LINUX_USB=y
+CONFIG_LINUX_E1000=y
+CONFIG_MOBILE_TETHERING=y
+
+#Modules packed into tools.cpio
+CONFIG_CRYPTSETUP2=y
+CONFIG_FLASHPROG=y
+CONFIG_FLASHTOOLS=y
+CONFIG_GPG2=y
+CONFIG_KEXEC=y
+CONFIG_UTIL_LINUX=y
+CONFIG_LVM2=y
+CONFIG_MBEDTLS=y
+CONFIG_PCIUTILS=y
+CONFIG_MSRTOOLS=y
+#Remote attestation support
+# TPM2 requirements
+CONFIG_TPM2_TSS=y
+CONFIG_OPENSSL=y
+#Remote Attestation common tools
+CONFIG_POPT=y
+CONFIG_QRENCODE=y
+CONFIG_TPMTOTP=y
+#HOTP based remote attestation for supported USB Security dongle
+#With/Without TPM support
+CONFIG_HOTPKEY=y
+#Nitrokey Storage admin tool (deprecated)
+#CONFIG_NKSTORECLI=n
+#GUI Support
+#Console based Whiptail support(Console based, no FB):
+#CONFIG_SLANG=y
+#CONFIG_NEWT=y
+#FBWhiptail based (Graphical):
+CONFIG_CAIRO=y
+CONFIG_FBWHIPTAIL=y
+#Additional tools (tools.cpio):
+#SSH server (requires ethernet drivers, eg: CONFIG_LINUX_E1000E)
+CONFIG_DROPBEAR=y
+
+#Runtime configuration
+#Automatically boot if HOTP is valid
+export CONFIG_AUTO_BOOT_TIMEOUT=5
+#TPM2 requirements
+export CONFIG_TPM2_TOOLS=y
+export CONFIG_PRIMARY_KEY_TYPE=ecc
+#TPM1 requirements
+#export CONFIG_TPM=y
+export CONFIG_BOOTSCRIPT=/bin/gui-init
+export CONFIG_BOOT_REQ_HASH=n
+export CONFIG_BOOT_REQ_ROLLBACK=n
+export CONFIG_BOOT_KERNEL_ADD=""
+export CONFIG_BOOT_KERNEL_REMOVE="intel_iommu=on intel_iommu=igfx_off"
+export CONFIG_BOARD_NAME="NovaCustom V540TU"
+export CONFIG_FLASH_OPTIONS="flashprog --progress --programmer internal"
+export CONFIG_AUTO_BOOT_TIMEOUT=5
diff --git a/config/coreboot-novacustom-v560tu.config b/config/coreboot-novacustom-v560tu.config
new file mode 100644
index 00000000..a80dc4f4
--- /dev/null
+++ b/config/coreboot-novacustom-v560tu.config
@@ -0,0 +1,943 @@
+#
+# Automatically generated file; DO NOT EDIT.
+# coreboot configuration
+#
+
+#
+# General setup
+#
+CONFIG_COREBOOT_BUILD=y
+CONFIG_LOCALVERSION="v0.9.0-rc1"
+CONFIG_CBFS_PREFIX="fallback"
+CONFIG_COMPILER_GCC=y
+# CONFIG_COMPILER_LLVM_CLANG is not set
+CONFIG_ARCH_SUPPORTS_CLANG=y
+# CONFIG_ANY_TOOLCHAIN is not set
+# CONFIG_CCACHE is not set
+# CONFIG_IWYU is not set
+# CONFIG_FMD_GENPARSER is not set
+# CONFIG_UTIL_GENPARSER is not set
+CONFIG_OPTION_BACKEND_NONE=y
+# CONFIG_USE_OPTION_TABLE is not set
+CONFIG_COMPRESS_RAMSTAGE_LZMA=y
+# CONFIG_COMPRESS_RAMSTAGE_LZ4 is not set
+CONFIG_SEPARATE_ROMSTAGE=y
+CONFIG_INCLUDE_CONFIG_FILE=y
+CONFIG_COLLECT_TIMESTAMPS=y
+# CONFIG_TIMESTAMPS_ON_CONSOLE is not set
+CONFIG_USE_BLOBS=y
+# CONFIG_USE_AMD_BLOBS is not set
+# CONFIG_USE_QC_BLOBS is not set
+# CONFIG_COVERAGE is not set
+# CONFIG_UBSAN is not set
+CONFIG_HAVE_ASAN_IN_RAMSTAGE=y
+# CONFIG_ASAN is not set
+# CONFIG_NO_STAGE_CACHE is not set
+CONFIG_TSEG_STAGE_CACHE=y
+# CONFIG_UPDATE_IMAGE is not set
+# CONFIG_BOOTSPLASH_IMAGE is not set
+# CONFIG_FW_CONFIG is not set
+
+#
+# Software Bill Of Materials (SBOM)
+#
+# CONFIG_SBOM is not set
+# end of Software Bill Of Materials (SBOM)
+# end of General setup
+
+#
+# Mainboard
+#
+
+#
+# Important: Run 'make distclean' before switching boards
+#
+# CONFIG_VENDOR_51NB is not set
+# CONFIG_VENDOR_ACER is not set
+# CONFIG_VENDOR_ADLINK is not set
+# CONFIG_VENDOR_AMD is not set
+# CONFIG_VENDOR_AOPEN is not set
+# CONFIG_VENDOR_APPLE is not set
+# CONFIG_VENDOR_ASROCK is not set
+# CONFIG_VENDOR_ASUS is not set
+# CONFIG_VENDOR_BIOSTAR is not set
+# CONFIG_VENDOR_BOSTENTECH is not set
+# CONFIG_VENDOR_BYTEDANCE is not set
+# CONFIG_VENDOR_CAVIUM is not set
+CONFIG_VENDOR_CLEVO=y
+# CONFIG_VENDOR_COMPULAB is not set
+# CONFIG_VENDOR_DELL is not set
+# CONFIG_VENDOR_EMULATION is not set
+# CONFIG_VENDOR_EXAMPLE is not set
+# CONFIG_VENDOR_FACEBOOK is not set
+# CONFIG_VENDOR_FOXCONN is not set
+# CONFIG_VENDOR_GETAC is not set
+# CONFIG_VENDOR_GIGABYTE is not set
+# CONFIG_VENDOR_GOOGLE is not set
+# CONFIG_VENDOR_HARDKERNEL is not set
+# CONFIG_VENDOR_HP is not set
+# CONFIG_VENDOR_IBASE is not set
+# CONFIG_VENDOR_IBM is not set
+# CONFIG_VENDOR_INTEL is not set
+# CONFIG_VENDOR_INVENTEC is not set
+# CONFIG_VENDOR_KONTRON is not set
+# CONFIG_VENDOR_LENOVO is not set
+# CONFIG_VENDOR_LIBRETREND is not set
+# CONFIG_VENDOR_MSI is not set
+# CONFIG_VENDOR_NOVACUSTOM is not set
+# CONFIG_VENDOR_OCP is not set
+# CONFIG_VENDOR_OPENCELLULAR is not set
+# CONFIG_VENDOR_PACKARDBELL is not set
+# CONFIG_VENDOR_PCENGINES is not set
+# CONFIG_VENDOR_PINE64 is not set
+# CONFIG_VENDOR_PORTWELL is not set
+# CONFIG_VENDOR_PRODRIVE is not set
+# CONFIG_VENDOR_PROTECTLI is not set
+# CONFIG_VENDOR_PURISM is not set
+# CONFIG_VENDOR_RAZER is not set
+# CONFIG_VENDOR_RODA is not set
+# CONFIG_VENDOR_SAMSUNG is not set
+# CONFIG_VENDOR_SAPPHIRE is not set
+# CONFIG_VENDOR_SIEMENS is not set
+# CONFIG_VENDOR_SIFIVE is not set
+# CONFIG_VENDOR_STARLABS is not set
+# CONFIG_VENDOR_SUPERMICRO is not set
+# CONFIG_VENDOR_SYSTEM76 is not set
+# CONFIG_VENDOR_TI is not set
+# CONFIG_VENDOR_UP is not set
+CONFIG_MAINBOARD_FAMILY="Not Applicable"
+CONFIG_MAINBOARD_PART_NUMBER="V54x_6x_TU"
+CONFIG_MAINBOARD_VERSION="V560TU"
+CONFIG_MAINBOARD_DIR="clevo/mtl-h"
+CONFIG_DIMM_MAX=4
+CONFIG_DIMM_SPD_SIZE=1024
+CONFIG_FMDFILE=""
+# CONFIG_NO_POST is not set
+CONFIG_MAINBOARD_VENDOR="Clevo"
+CONFIG_CBFS_SIZE=0x1000000
+CONFIG_CONSOLE_SERIAL=y
+CONFIG_MAX_CPUS=22
+CONFIG_ONBOARD_VGA_IS_PRIMARY=y
+# CONFIG_POST_DEVICE is not set
+# CONFIG_POST_IO is not set
+CONFIG_UART_FOR_CONSOLE=0
+CONFIG_DEVICETREE="devicetree.cb"
+# CONFIG_VBOOT is not set
+CONFIG_VBOOT_VBNV_OFFSET=0x28
+CONFIG_VARIANT_DIR="igpu"
+CONFIG_OVERRIDE_DEVICETREE="variants/$(CONFIG_VARIANT_DIR)/overridetree.cb"
+# CONFIG_VGA_BIOS is not set
+CONFIG_MAINBOARD_SMBIOS_MANUFACTURER="Notebook"
+CONFIG_INTEL_GMA_VBT_FILE="src/mainboard/$(MAINBOARDDIR)/variants/$(VARIANT_DIR)/data.vbt"
+# CONFIG_DISABLE_HECI1_AT_PRE_BOOT is not set
+CONFIG_PRERAM_CBMEM_CONSOLE_SIZE=0x2000
+CONFIG_CMOS_DEFAULT_FILE="src/mainboard/$(MAINBOARDDIR)/cmos.default"
+CONFIG_CMOS_LAYOUT_FILE="src/mainboard/$(MAINBOARDDIR)/cmos.layout"
+CONFIG_BOOT_DEVICE_SPI_FLASH_BUS=0
+
+#
+# Alder Lake P
+#
+# CONFIG_BOARD_CLEVO_NS50PU is not set
+# CONFIG_BOARD_CLEVO_NV40PZ is not set
+
+#
+# Comet Lake U
+#
+# CONFIG_BOARD_CLEVO_L140CU is not set
+
+#
+# Kaby Lake U
+#
+# CONFIG_BOARD_CLEVO_N130WU is not set
+
+#
+# Meteor Lake H
+#
+# CONFIG_BOARD_CLEVO_V540TNX is not set
+# CONFIG_BOARD_CLEVO_V560TNX is not set
+CONFIG_BOARD_CLEVO_V560TU=y
+# CONFIG_BOARD_CLEVO_V560TU is not set
+
+#
+# Tiger Lake U
+#
+# CONFIG_BOARD_CLEVO_L140MU is not set
+# CONFIG_BOARD_CLEVO_NV40MZ is not set
+# CONFIG_BOARD_CLEVO_NS50MU is not set
+CONFIG_MAINBOARD_SMBIOS_PRODUCT_NAME="V54x_6x_TU"
+# CONFIG_CONSOLE_POST is not set
+# CONFIG_USE_PM_ACPI_TIMER is not set
+CONFIG_TPM_PIRQ=0x61
+# CONFIG_SOC_INTEL_CSE_SEND_EOP_EARLY is not set
+CONFIG_VBOOT_FWID_VERSION="$(CONFIG_LOCALVERSION)"
+CONFIG_EC_SYSTEM76_EC_BAT_THRESHOLDS=y
+CONFIG_PXE_ROM_ID="10ec,8168"
+CONFIG_BOARD_CLEVO_MTLH_COMMON=y
+CONFIG_BOARD_CLEVO_V5X0TU_BASE=y
+CONFIG_EC_SYSTEM76_EC_FLASH_SIZE=0x40000
+CONFIG_ECAM_MMCONF_BASE_ADDRESS=0xc0000000
+CONFIG_ECAM_MMCONF_BUS_NUMBER=256
+CONFIG_MEMLAYOUT_LD_FILE="src/arch/x86/memlayout.ld"
+CONFIG_DCACHE_RAM_BASE=0xfef00000
+CONFIG_DCACHE_RAM_SIZE=0xc0000
+CONFIG_C_ENV_BOOTBLOCK_SIZE=0x40000
+CONFIG_DCACHE_BSP_STACK_SIZE=0x80400
+CONFIG_MAX_ACPI_TABLE_SIZE_KB=144
+CONFIG_HAVE_INTEL_FIRMWARE=y
+CONFIG_MRC_SETTINGS_CACHE_SIZE=0x10000
+CONFIG_DRIVERS_INTEL_WIFI=y
+CONFIG_IFD_BIN_PATH="3rdparty/dasharo-blobs/novacustom/v5x0tu/descriptor.bin"
+CONFIG_ME_BIN_PATH="3rdparty/dasharo-blobs/novacustom/v5x0tu/me.bin"
+CONFIG_GBE_BIN_PATH="3rdparty/dasharo-blobs/novacustom/v5x0tu/gbe.bin"
+CONFIG_CONSOLE_CBMEM_BUFFER_SIZE=0x200000
+CONFIG_PCIEXP_DEFAULT_MAX_RESIZABLE_BAR_BITS=36
+CONFIG_CARDBUS_PLUGIN_SUPPORT=y
+CONFIG_SPI_FLASH_DONT_INCLUDE_ALL_DRIVERS=y
+# CONFIG_USE_LEGACY_8254_TIMER is not set
+# CONFIG_DEBUG_SMI is not set
+CONFIG_HAVE_IFD_BIN=y
+CONFIG_PCIEXP_HOTPLUG_BUSES=42
+CONFIG_PCIEXP_HOTPLUG_MEM=0xc200000
+CONFIG_PCIEXP_HOTPLUG_PREFETCH_MEM=0x1c000000
+CONFIG_PS2K_EISAID="PNP0303"
+CONFIG_PS2M_EISAID="PNP0F13"
+CONFIG_TTYS0_BAUD=115200
+CONFIG_POWER_STATE_DEFAULT_ON_AFTER_FAILURE=y
+CONFIG_D3COLD_SUPPORT=y
+CONFIG_PCIEXP_ASPM=y
+CONFIG_PCIEXP_L1_SUB_STATE=y
+CONFIG_PCIEXP_CLK_PM=y
+# CONFIG_DRIVERS_UART_8250IO is not set
+CONFIG_PC_CMOS_BASE_PORT_BANK1=0x72
+CONFIG_FSP_TEMP_RAM_SIZE=0x20000
+CONFIG_EC_GPE_SCI=0x50
+CONFIG_TPM_MEASURED_BOOT=y
+CONFIG_LINUX_COMMAND_LINE="debug"
+CONFIG_BOARD_ROMSIZE_KB_32768=y
+# CONFIG_COREBOOT_ROMSIZE_KB_256 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_512 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_1024 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_2048 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_4096 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_5120 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_6144 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_8192 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_10240 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_12288 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_16384 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_24576 is not set
+CONFIG_COREBOOT_ROMSIZE_KB_32768=y
+# CONFIG_COREBOOT_ROMSIZE_KB_65536 is not set
+CONFIG_COREBOOT_ROMSIZE_KB=32768
+CONFIG_ROM_SIZE=0x02000000
+CONFIG_HAVE_POWER_STATE_AFTER_FAILURE=y
+CONFIG_HAVE_POWER_STATE_PREVIOUS_AFTER_FAILURE=y
+CONFIG_POWER_STATE_OFF_AFTER_FAILURE=y
+# CONFIG_POWER_STATE_ON_AFTER_FAILURE is not set
+# CONFIG_POWER_STATE_PREVIOUS_AFTER_FAILURE is not set
+CONFIG_MAINBOARD_POWER_FAILURE_STATE=0
+# end of Mainboard
+
+CONFIG_SYSTEM_TYPE_LAPTOP=y
+
+#
+# Chipset
+#
+
+#
+# SoC
+#
+CONFIG_CHIPSET_DEVICETREE="soc/intel/meteorlake/chipset.cb"
+CONFIG_FSP_M_FILE="$(obj)/Fsp_M.fd"
+CONFIG_FSP_S_FILE="$(obj)/Fsp_S.fd"
+CONFIG_CBFS_MCACHE_SIZE=0x4000
+CONFIG_ROMSTAGE_ADDR=0x2000000
+CONFIG_VERSTAGE_ADDR=0x2000000
+CONFIG_CONSOLE_UART_BASE_ADDRESS=0xfe02c000
+CONFIG_SMM_TSEG_SIZE=0x800000
+CONFIG_SMM_RESERVED_SIZE=0x200000
+CONFIG_SMM_MODULE_STACK_SIZE=0x800
+CONFIG_ACPI_BERT=y
+CONFIG_ACPI_BERT_SIZE=0x10000
+CONFIG_DRIVERS_I2C_DESIGNWARE_CLOCK_MHZ=133
+CONFIG_VBOOT_HASH_BLOCK_SIZE=0x1000
+CONFIG_PRERAM_CBFS_CACHE_SIZE=0x4000
+CONFIG_DOMAIN_RESOURCE_32BIT_LIMIT=0xe0000000
+CONFIG_ACPI_CPU_STRING="CP%02X"
+CONFIG_STACK_SIZE=0x2000
+CONFIG_EXT_BIOS_WIN_BASE=0xf8000000
+CONFIG_EXT_BIOS_WIN_SIZE=0x2000000
+CONFIG_IFD_CHIPSET="mtl"
+CONFIG_IED_REGION_SIZE=0x400000
+CONFIG_MAX_TBT_ROOT_PORTS=4
+CONFIG_MAX_ROOT_PORTS=12
+CONFIG_MAX_PCIE_CLOCK_SRC=9
+CONFIG_PCR_BASE_ADDRESS=0xe0000000
+CONFIG_CPU_BCLK_MHZ=100
+CONFIG_SOC_INTEL_PERFORMANCE_CORE_SCALE_FACTOR=125
+CONFIG_SOC_INTEL_EFFICIENT_CORE_SCALE_FACTOR=100
+CONFIG_SOC_INTEL_COMMON_BLOCK_GSPI_CLOCK_MHZ=120
+CONFIG_CPU_XTAL_HZ=38400000
+CONFIG_SOC_INTEL_COMMON_BLOCK_GSPI_MAX=3
+CONFIG_SOC_INTEL_I2C_DEV_MAX=6
+CONFIG_SOC_INTEL_UART_DEV_MAX=3
+CONFIG_SOC_INTEL_COMMON_LPSS_UART_CLK_M_VAL=0x25a
+CONFIG_SOC_INTEL_COMMON_LPSS_UART_CLK_N_VAL=0x7fff
+CONFIG_FSP_HEADER_PATH="3rdparty/dasharo-blobs/novacustom/v5x0tu/MeteorLakeFspBinPkg/Include/"
+CONFIG_FSP_FD_PATH="3rdparty/dasharo-blobs/novacustom/v5x0tu/MeteorLakeFspBinPkg/Fsp.fd"
+CONFIG_DATA_BUS_WIDTH=128
+CONFIG_DIMMS_PER_CHANNEL=2
+CONFIG_MRC_CHANNEL_WIDTH=16
+CONFIG_BUILDING_WITH_DEBUG_FSP=y
+CONFIG_INTEL_GMA_BCLV_OFFSET=0xc8258
+CONFIG_INTEL_GMA_BCLV_WIDTH=32
+CONFIG_INTEL_GMA_BCLM_OFFSET=0xc8254
+CONFIG_INTEL_GMA_BCLM_WIDTH=32
+CONFIG_FSP_PUBLISH_MBP_HOB=y
+CONFIG_MAX_HECI_DEVICES=6
+CONFIG_BOOTBLOCK_IN_CBFS=y
+CONFIG_HAVE_PAM0_REGISTER=y
+CONFIG_PCIEXP_COMMON_CLOCK=y
+CONFIG_CPU_INTEL_NUM_FIT_ENTRIES=4
+CONFIG_SOC_INTEL_METEORLAKE=y
+CONFIG_SOC_INTEL_METEORLAKE_U_H=y
+CONFIG_SOC_INTEL_METEORLAKE_TCSS_USB4_SUPPORT=y
+CONFIG_METEORLAKE_CAR_ENHANCED_NEM=y
+CONFIG_CPU_MAX_TEMPERATURE=110
+CONFIG_IOE_PCR_BASE_ADDRESS=0x3fff0000000
+CONFIG_SOC_INTEL_USB2_DEV_MAX=10
+CONFIG_SOC_INTEL_USB3_DEV_MAX=2
+CONFIG_SOC_INTEL_METEORLAKE_DEBUG_CONSENT=0
+CONFIG_SOC_INTEL_GFX_FRAMEBUFFER_OFFSET=0x800000
+CONFIG_PCIE_LTR_MAX_SNOOP_LATENCY=0x100f
+CONFIG_PCIE_LTR_MAX_NO_SNOOP_LATENCY=0x100f
+CONFIG_IOE_DIE_CLOCK_START=6
+CONFIG_SOC_INTEL_CSE_FW_PARTITION_CMOS_OFFSET=161
+CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_SLP_S0_FREQ_HZ=0x2005
+CONFIG_SOC_PHYSICAL_ADDRESS_WIDTH=42
+CONFIG_INTEL_TME=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_P2SB=y
+CONFIG_FIXED_SMBUS_IO_BASE=0xefa0
+CONFIG_CBFS_CACHE_ALIGN=8
+CONFIG_SOC_INTEL_COMMON=y
+
+#
+# Intel SoC Common Code for IP blocks
+#
+CONFIG_SOC_INTEL_COMMON_BLOCK=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_GPIO=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_LPIT=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_PEP=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_PEP_LPM_REQ=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_CRASHLOG=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_CPPC=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_CPU_HYBRID=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_CHIP_CONFIG=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_CNVI=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_CPU=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_CPU_MPINIT=y
+CONFIG_USE_FSP_FEATURE_PROGRAM_ON_APS=y
+# CONFIG_USE_COREBOOT_MP_INIT is not set
+CONFIG_SOC_INTEL_COMMON_BLOCK_CPU_SMMRELOCATE=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_CAR=y
+CONFIG_INTEL_CAR_NEM_ENHANCED=y
+CONFIG_CAR_HAS_SF_MASKS=y
+CONFIG_COS_MAPPED_TO_MSB=y
+CONFIG_CAR_HAS_L3_PROTECTED_WAYS=y
+CONFIG_USE_INTEL_FSP_TO_CALL_COREBOOT_PUBLISH_MP_PPI=y
+CONFIG_CPU_SUPPORTS_INTEL_TME=y
+CONFIG_TME_KEY_REGENERATION_ON_WARM_BOOT=y
+CONFIG_CPU_SUPPORTS_PM_TIMER_EMULATION=y
+CONFIG_HAVE_HYPERTHREADING=y
+CONFIG_FSP_HYPERTHREADING=y
+CONFIG_INTEL_KEYLOCKER=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE=2
+# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_MAX is not set
+# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_256MB is not set
+# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_128MB is not set
+# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_64MB is not set
+# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_32MB is not set
+# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_16MB is not set
+# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_8MB is not set
+# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_4MB is not set
+CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_2MB=y
+# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_0MB is not set
+CONFIG_SOC_INTEL_COMMON_BLOCK_CSE=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_HECI1_DISABLE_USING_PMC_IPC=y
+CONFIG_SOC_INTEL_CSE_SEND_EOP_LATE=y
+CONFIG_SOC_INTEL_CSE_FMAP_NAME="SI_ME"
+CONFIG_SOC_INTEL_CSE_RW_A_FMAP_NAME="ME_RW_A"
+CONFIG_SOC_INTEL_CSE_RW_B_FMAP_NAME="ME_RW_B"
+CONFIG_SOC_INTEL_CSE_RW_CBFS_NAME="me_rw"
+CONFIG_SOC_INTEL_CSE_RW_HASH_CBFS_NAME="me_rw.hash"
+CONFIG_SOC_INTEL_CSE_RW_VERSION_CBFS_NAME="me_rw.version"
+CONFIG_SOC_INTEL_CSE_RW_FILE=""
+CONFIG_SOC_INTEL_CSE_RW_VERSION=""
+CONFIG_SOC_INTEL_CSE_SET_EOP=y
+CONFIG_SOC_INTEL_CSE_IOM_CBFS_NAME="cse_iom"
+CONFIG_SOC_INTEL_CSE_IOM_CBFS_FILE=""
+CONFIG_SOC_INTEL_CSE_NPHY_CBFS_NAME="cse_nphy"
+CONFIG_SOC_INTEL_CSE_NPHY_CBFS_FILE=""
+CONFIG_SOC_INTEL_CSE_PRE_CPU_RESET_TELEMETRY=y
+CONFIG_SOC_INTEL_CSE_PRE_CPU_RESET_TELEMETRY_V2=y
+CONFIG_SOC_INTEL_CSE_HAVE_SPEC_SUPPORT=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_ME_SPEC_18=y
+CONFIG_ME_SPEC=18
+CONFIG_SOC_INTEL_COMMON_BLOCK_DSP=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_DTT=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_FAST_SPI=y
+CONFIG_FAST_SPI_DISABLE_WRITE_STATUS=y
+CONFIG_FAST_SPI_SUPPORTS_EXT_BIOS_WINDOW=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_GPIO=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_GPIO_ITSS_POL_CFG=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_GPIO_IOSTANDBY=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_GPIO_DUAL_ROUTE_SUPPORT=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_GPIO_LOCK_USING_PCR=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_GPIO_PMODE_4BITS=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_GPMR=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_GRAPHICS=y
+# CONFIG_SOC_INTEL_DISABLE_IGD is not set
+CONFIG_SOC_INTEL_GFX_NON_PREFETCHABLE_MMIO=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_GSPI=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_GSPI_VERSION_2=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_HDA=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_HDA_VERB=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_I2C=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_IOC=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_IPU=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_IRQ=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_ITSS=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_LPC=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_LPC_MIRROR_TO_GPMR=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_LPSS=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_MEMINIT=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_BASE_P2SB=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_IOE_P2SB=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_PCIE=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_PCIE_RTD3=y
+CONFIG_PCIE_CLOCK_CONTROL_THROUGH_P2SB=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_PCR=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_PMC=y
+CONFIG_SOC_INTEL_MEM_MAPPED_PM_CONFIGURATION=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_PMC_EPOC=y
+CONFIG_PMC_IPC_ACPI_INTERFACE=y
+CONFIG_PMC_GLOBAL_RESET_ENABLE_LOCK=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_POWER_LIMIT=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_RTC=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_SATA=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_SMBUS=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_TCO=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_TCO_ENABLE_THROUGH_SMBUS=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_SMM=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_SMM_IO_TRAP=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_SMM_TCO_ENABLE=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_SMM_S5_DELAY_MS=0
+CONFIG_SOC_INTEL_COMMON_BLOCK_SPI=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_SA=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_TCSS=y
+# CONFIG_TCSS_HAS_USBC_OPS is not set
+CONFIG_SOC_INTEL_COMMON_BLOCK_THERMAL=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_THERMAL_BEHIND_PMC=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_TIMER=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_UART=y
+CONFIG_INTEL_LPSS_UART_FOR_CONSOLE=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_USB4=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_USB4_PCIE=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_USB4_XHCI=y
+CONFIG_SOC_INTEL_ENABLE_USB4_PCIE_RESOURCES=y
+# CONFIG_FIRMWARE_CONNECTION_MANAGER is not set
+CONFIG_SOFTWARE_CONNECTION_MANAGER=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_VTD=y
+CONFIG_ENABLE_EARLY_DMA_PROTECTION=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_XDCI=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_XHCI=y
+CONFIG_SOC_INTEL_COMMON_BLOCK_XHCI_ELOG=y
+
+#
+# Intel SoC Common PCH Code
+#
+CONFIG_SOC_INTEL_COMMON_PCH_CLIENT=y
+CONFIG_SOC_INTEL_COMMON_PCH_BASE=y
+CONFIG_SOC_INTEL_COMMON_PCH_LOCKDOWN=y
+CONFIG_PCH_SPECIFIC_BASE_OPTIONS=y
+CONFIG_PCH_SPECIFIC_DISCRETE_OPTIONS=y
+CONFIG_PCH_SPECIFIC_CLIENT_OPTIONS=y
+
+#
+# Intel SoC Common coreboot stages and non-IP blocks
+#
+CONFIG_SOC_INTEL_COMMON_BASECODE=y
+CONFIG_SOC_INTEL_COMMON_RESET=y
+CONFIG_SOC_INTEL_COMMON_ACPI_WAKE_SOURCE=y
+CONFIG_PAVP=y
+# CONFIG_SOC_INTEL_DEBUG_CONSENT is not set
+CONFIG_HAVE_INTEL_COMPLIANCE_TEST_MODE=y
+# CONFIG_SOC_INTEL_COMPLIANCE_TEST_MODE is not set
+CONFIG_SOC_INTEL_CRASHLOG=y
+CONFIG_SOC_INTEL_IOE_DIE_SUPPORT=y
+
+#
+# CPU
+#
+CONFIG_CPU_INTEL_FIRMWARE_INTERFACE_TABLE=y
+CONFIG_CPU_INTEL_COMMON=y
+CONFIG_ENABLE_VMX=y
+CONFIG_SET_IA32_FC_LOCK_BIT=y
+CONFIG_SET_MSR_AESNI_LOCK_BIT=y
+CONFIG_CPU_INTEL_COMMON_VOLTAGE=y
+CONFIG_CPU_INTEL_COMMON_SMM=y
+CONFIG_PARALLEL_MP=y
+CONFIG_PARALLEL_MP_AP_WORK=y
+CONFIG_DEFAULT_X2APIC_LATE_WORKAROUND=y
+# CONFIG_XAPIC_ONLY is not set
+# CONFIG_X2APIC_ONLY is not set
+# CONFIG_X2APIC_RUNTIME is not set
+CONFIG_X2APIC_LATE_WORKAROUND=y
+CONFIG_UDELAY_TSC=y
+CONFIG_TSC_MONOTONIC_TIMER=y
+CONFIG_X86_CLFLUSH_CAR=y
+CONFIG_HAVE_SMI_HANDLER=y
+CONFIG_SMM_TSEG=y
+CONFIG_SMM_PCI_RESOURCE_STORE_NUM_SLOTS=8
+CONFIG_X86_INIT_NEED_1_SIPI=y
+CONFIG_AP_STACK_SIZE=0x800
+CONFIG_SMP=y
+CONFIG_SSE=y
+CONFIG_SSE2=y
+CONFIG_SUPPORT_CPU_UCODE_IN_CBFS=y
+CONFIG_USE_CPU_MICROCODE_CBFS_BINS=y
+CONFIG_CPU_MICROCODE_CBFS_DEFAULT_BINS=y
+# CONFIG_CPU_MICROCODE_CBFS_EXTERNAL_BINS is not set
+# CONFIG_CPU_MICROCODE_CBFS_EXTERNAL_HEADER is not set
+# CONFIG_CPU_MICROCODE_CBFS_NONE is not set
+
+#
+# Northbridge
+#
+
+#
+# Southbridge
+#
+CONFIG_PCIEXP_HOTPLUG=y
+CONFIG_INTEL_DESCRIPTOR_MODE_REQUIRED=y
+CONFIG_SOUTHBRIDGE_INTEL_COMMON_SMBUS=y
+CONFIG_SOUTHBRIDGE_INTEL_COMMON_PIRQ_ACPI_GEN=y
+CONFIG_INTEL_DESCRIPTOR_MODE_CAPABLE=y
+# CONFIG_VALIDATE_INTEL_DESCRIPTOR is not set
+CONFIG_FIXED_RCBA_MMIO_BASE=0xfed1c000
+CONFIG_RCBA_LENGTH=0x4000
+
+#
+# Super I/O
+#
+
+#
+# Embedded Controllers
+#
+CONFIG_EC_ACPI=y
+CONFIG_EC_SYSTEM76_EC=y
+# CONFIG_EC_SYSTEM76_EC_UPDATE is not set
+
+#
+# Intel Firmware
+#
+# CONFIG_IFDTOOL_DISABLE_ME is not set
+CONFIG_HAVE_ME_BIN=y
+# CONFIG_STITCH_ME_BIN is not set
+# CONFIG_ME_REGION_ALLOW_CPU_READ_ACCESS is not set
+CONFIG_HAVE_INTEL_ME_HAP=y
+# CONFIG_INTEL_ME_DISABLED_HECI is not set
+# CONFIG_INTEL_ME_DISABLED_HAP is not set
+CONFIG_INTEL_ME_ENABLED=y
+CONFIG_INTEL_ME_DEFAULT_STATE=0
+CONFIG_MAINBOARD_USES_IFD_GBE_REGION=y
+CONFIG_HAVE_GBE_BIN=y
+# CONFIG_DO_NOT_TOUCH_DESCRIPTOR_REGION is not set
+# CONFIG_LOCK_MANAGEMENT_ENGINE is not set
+CONFIG_UNLOCK_FLASH_REGIONS=y
+CONFIG_BIOS_VENDOR="3mdeb"
+
+#
+# Dasharo
+#
+
+#
+# Dasharo Configuration
+#
+# CONFIG_DASHARO_PREFER_S3_SLEEP is not set
+CONFIG_DASHARO_FIRMWARE_UPDATE_MODE=y
+# end of Dasharo Configuration
+
+CONFIG_UDK_BASE=y
+# CONFIG_UDK_202005_BINDING is not set
+CONFIG_UDK_202302_BINDING=y
+CONFIG_UDK_2013_VERSION=2013
+CONFIG_UDK_2017_VERSION=2017
+CONFIG_UDK_202005_VERSION=202005
+CONFIG_UDK_202302_VERSION=202302
+CONFIG_UDK_VERSION=202302
+CONFIG_ARCH_X86=y
+CONFIG_ARCH_BOOTBLOCK_X86_32=y
+CONFIG_ARCH_VERSTAGE_X86_32=y
+CONFIG_ARCH_ROMSTAGE_X86_32=y
+CONFIG_ARCH_POSTCAR_X86_32=y
+CONFIG_ARCH_RAMSTAGE_X86_32=y
+CONFIG_ARCH_ALL_STAGES_X86_32=y
+CONFIG_RESERVED_PHYSICAL_ADDRESS_BITS_SUPPORT=y
+CONFIG_X86_CUSTOM_BOOTMEDIA=y
+CONFIG_POSTRAM_CBFS_CACHE_IN_BSS=y
+CONFIG_RAMSTAGE_CBFS_CACHE_SIZE=0x4000
+CONFIG_PC80_SYSTEM=y
+CONFIG_HAVE_CMOS_DEFAULT=y
+CONFIG_POSTCAR_STAGE=y
+CONFIG_BOOTBLOCK_SIMPLE=y
+# CONFIG_BOOTBLOCK_NORMAL is not set
+CONFIG_COLLECT_TIMESTAMPS_TSC=y
+CONFIG_IDT_IN_EVERY_STAGE=y
+CONFIG_HAVE_CF9_RESET=y
+CONFIG_DEBUG_HW_BREAKPOINTS=y
+CONFIG_DEBUG_HW_BREAKPOINTS_IN_ALL_STAGES=y
+CONFIG_DEBUG_NULL_DEREF_BREAKPOINTS=y
+CONFIG_DEBUG_NULL_DEREF_BREAKPOINTS_IN_ALL_STAGES=y
+# CONFIG_DUMP_SMBIOS_TYPE17 is not set
+# end of Chipset
+
+#
+# Devices
+#
+CONFIG_HAVE_LINEAR_FRAMEBUFFER=y
+CONFIG_HAVE_FSP_GOP=y
+# CONFIG_VGA_ROM_RUN is not set
+CONFIG_RUN_FSP_GOP=y
+# CONFIG_NO_GFX_INIT is not set
+CONFIG_NO_EARLY_GFX_INIT=y
+
+#
+# Display
+#
+CONFIG_GENERIC_LINEAR_FRAMEBUFFER=y
+CONFIG_LINEAR_FRAMEBUFFER=y
+CONFIG_BOOTSPLASH=y
+# end of Display
+
+CONFIG_PCI=y
+CONFIG_ECAM_MMCONF_SUPPORT=y
+CONFIG_PCIX_PLUGIN_SUPPORT=y
+CONFIG_AZALIA_HDA_CODEC_SUPPORT=y
+CONFIG_AZALIA_LOCK_DOWN_R_WO_GCAP=y
+CONFIG_PCIEXP_PLUGIN_SUPPORT=y
+CONFIG_ECAM_MMCONF_LENGTH=0x10000000
+CONFIG_PCI_ALLOW_BUS_MASTER=y
+CONFIG_PCI_SET_BUS_MASTER_PCI_BRIDGES=y
+CONFIG_PCI_ALLOW_BUS_MASTER_ANY_DEVICE=y
+CONFIG_PCIEXP_SUPPORT_RESIZABLE_BARS=y
+CONFIG_PCIEXP_LANE_ERR_STAT_CLEAR=y
+CONFIG_PCIEXP_HOTPLUG_PREFETCH_MEM_BELOW_4G=y
+CONFIG_PCIEXP_HOTPLUG_IO=0x800
+# CONFIG_EARLY_PCI_BRIDGE is not set
+CONFIG_SUBSYSTEM_VENDOR_ID=0x0000
+CONFIG_SUBSYSTEM_DEVICE_ID=0x0000
+CONFIG_INTEL_GMA_HAVE_VBT=y
+CONFIG_INTEL_GMA_ADD_VBT=y
+# CONFIG_SOFTWARE_I2C is not set
+CONFIG_I2C_TRANSFER_TIMEOUT_US=500000
+# CONFIG_RESOURCE_ALLOCATION_TOP_DOWN is not set
+# end of Devices
+
+#
+# Generic Drivers
+#
+CONFIG_CRB_TPM_BASE_ADDRESS=0xfed40000
+# CONFIG_DRIVERS_EFI_VARIABLE_STORE is not set
+# CONFIG_ELOG is not set
+CONFIG_CACHE_MRC_SETTINGS=y
+CONFIG_MRC_SETTINGS_PROTECT=y
+CONFIG_MRC_CACHE_USING_MRC_VERSION=y
+# CONFIG_SMMSTORE is not set
+CONFIG_SPI_FLASH=y
+CONFIG_BOOT_DEVICE_SPI_FLASH_RW_NOMMAP=y
+CONFIG_BOOT_DEVICE_SPI_FLASH_RW_NOMMAP_EARLY=y
+# CONFIG_SPI_FLASH_NO_FAST_READ is not set
+CONFIG_TPM_INIT_RAMSTAGE=y
+CONFIG_TPM_PPI=y
+CONFIG_DRIVERS_UART=y
+CONFIG_NO_UART_ON_SUPERIO=y
+CONFIG_DRIVERS_UART_8250MEM=y
+CONFIG_DRIVERS_UART_8250MEM_32=y
+# CONFIG_VPD is not set
+CONFIG_DRIVERS_GENERIC_BAYHUB_LV2=y
+# CONFIG_DRIVERS_GENERIC_CBFS_SERIAL is not set
+# CONFIG_DRIVERS_GENERIC_CBFS_UUID is not set
+# CONFIG_DRIVERS_GENESYSLOGIC_GL9750 is not set
+# CONFIG_DRIVERS_GENESYSLOGIC_GL9755 is not set
+# CONFIG_DRIVERS_GENESYSLOGIC_GL9763E is not set
+CONFIG_DRIVERS_I2C_DESIGNWARE=y
+CONFIG_DRIVERS_I2C_GENERIC=y
+CONFIG_DRIVERS_I2C_HID=y
+# CONFIG_DRIVERS_I2C_MAX98396 is not set
+# CONFIG_DISPLAY_HOBS is not set
+# CONFIG_DISPLAY_UPD_DATA is not set
+# CONFIG_BMP_LOGO is not set
+CONFIG_PLATFORM_USES_FSP2_0=y
+CONFIG_PLATFORM_USES_FSP2_1=y
+CONFIG_PLATFORM_USES_FSP2_2=y
+CONFIG_PLATFORM_USES_FSP2_3=y
+CONFIG_PLATFORM_USES_FSP2_X86_32=y
+CONFIG_ADD_FSP_BINARIES=y
+CONFIG_FSP_T_LOCATION=0xfffe0000
+CONFIG_FSP_S_CBFS="fsps.bin"
+CONFIG_FSP_M_CBFS="fspm.bin"
+CONFIG_FSP_FULL_FD=y
+CONFIG_FSP_T_RESERVED_SIZE=0x0
+CONFIG_FSP_M_XIP=y
+CONFIG_FSP_USES_CB_STACK=y
+CONFIG_HAVE_FSP_LOGO_SUPPORT=y
+CONFIG_FSP_COMPRESS_FSP_S_LZ4=y
+CONFIG_FSP_STATUS_GLOBAL_RESET_REQUIRED_3=y
+CONFIG_FSP_STATUS_GLOBAL_RESET=0x40000003
+CONFIG_SOC_INTEL_COMMON_FSP_RESET=y
+CONFIG_FSPS_HAS_ARCH_UPD=y
+CONFIG_FSPS_USE_MULTI_PHASE_INIT=y
+CONFIG_FSP_USES_CB_DEBUG_EVENT_HANDLER=y
+# CONFIG_DISPLAY_FSP_TIMESTAMPS is not set
+CONFIG_FSP_ENABLE_SERIAL_DEBUG=y
+CONFIG_INTEL_GMA_ACPI=y
+CONFIG_VBT_CBFS_COMPRESSION_LZMA=y
+# CONFIG_VBT_CBFS_COMPRESSION_LZ4 is not set
+# CONFIG_VBT_CBFS_COMPRESSION_NONE is not set
+CONFIG_VBT_CBFS_COMPRESSION_ALGORITHM="lzma"
+CONFIG_INTEL_GMA_OPREGION_2_1=y
+CONFIG_INTEL_GMA_VERSION_2=y
+CONFIG_DRIVERS_INTEL_PMC=y
+# CONFIG_DRIVERS_NXP_UWB_SR1XX is not set
+# CONFIG_DRIVERS_PS2_KEYBOARD is not set
+CONFIG_DRIVERS_MC146818=y
+CONFIG_USE_PC_CMOS_ALTCENTURY=y
+CONFIG_PC_CMOS_BASE_PORT_BANK0=0x70
+CONFIG_MEMORY_MAPPED_TPM=y
+CONFIG_TPM_TIS_BASE_ADDRESS=0xfed40000
+# CONFIG_DRIVERS_SIL_3114 is not set
+CONFIG_DRIVERS_USB_ACPI=y
+CONFIG_DRIVERS_WIFI_GENERIC=y
+CONFIG_DRIVERS_MTK_WIFI=y
+CONFIG_MP_SERVICES_PPI=y
+CONFIG_MP_SERVICES_PPI_V2=y
+CONFIG_DRIVERS_INTEL_USB4_RETIMER=y
+# end of Generic Drivers
+
+#
+# Security
+#
+
+#
+# CBFS verification
+#
+# CONFIG_CBFS_VERIFICATION is not set
+# end of CBFS verification
+
+#
+# Verified Boot (vboot)
+#
+CONFIG_VBOOT_LIB=y
+# end of Verified Boot (vboot)
+
+#
+# Trusted Platform Module
+#
+# CONFIG_TPM1 is not set
+CONFIG_TPM2=y
+CONFIG_TPM=y
+CONFIG_MAINBOARD_HAS_TPM2=y
+# CONFIG_DEBUG_TPM is not set
+CONFIG_TPM_RDRESP_NEED_DELAY=y
+# CONFIG_TPM_LOG_CB is not set
+CONFIG_TPM_LOG_TPM2=y
+# CONFIG_TPM_HASH_SHA1 is not set
+CONFIG_TPM_HASH_SHA256=y
+# CONFIG_TPM_HASH_SHA384 is not set
+# CONFIG_TPM_HASH_SHA512 is not set
+CONFIG_TPM_MEASURED_BOOT_RUNTIME_DATA=""
+CONFIG_PCR_BOOT_MODE=1
+CONFIG_PCR_HWID=1
+CONFIG_PCR_SRTM=2
+CONFIG_PCR_FW_VER=10
+CONFIG_PCR_RUNTIME_DATA=3
+# end of Trusted Platform Module
+
+#
+# Memory initialization
+#
+CONFIG_PLATFORM_HAS_DRAM_CLEAR=y
+# CONFIG_SECURITY_CLEAR_DRAM_ON_REGULAR_BOOT is not set
+# end of Memory initialization
+
+# CONFIG_INTEL_TXT is not set
+# CONFIG_STM is not set
+# CONFIG_INTEL_CBNT_SUPPORT is not set
+CONFIG_BOOTMEDIA_LOCK_NONE=y
+# CONFIG_BOOTMEDIA_LOCK_CONTROLLER is not set
+# CONFIG_BOOTMEDIA_LOCK_CHIP is not set
+# CONFIG_BOOTMEDIA_SMM_BWP is not set
+# end of Security
+
+CONFIG_ACPI_HAVE_PCAT_8259=y
+CONFIG_ACPI_INTEL_HARDWARE_SLEEP_VALUES=y
+CONFIG_ACPI_SOC_NVS=y
+CONFIG_ACPI_CUSTOM_MADT=y
+CONFIG_ACPI_COMMON_MADT_IOAPIC=y
+CONFIG_HAVE_ACPI_TABLES=y
+CONFIG_ACPI_LPIT=y
+CONFIG_BOOT_DEVICE_SPI_FLASH=y
+CONFIG_BOOT_DEVICE_MEMORY_MAPPED=y
+CONFIG_BOOT_DEVICE_SUPPORTS_WRITES=y
+CONFIG_RTC=y
+CONFIG_HEAP_SIZE=0x100000
+
+#
+# Console
+#
+CONFIG_BOOTBLOCK_CONSOLE=y
+CONFIG_POSTCAR_CONSOLE=y
+CONFIG_SQUELCH_EARLY_SMP=y
+CONFIG_FIXED_UART_FOR_CONSOLE=y
+
+#
+# memory mapped, 8250-compatible
+#
+CONFIG_TTYS0_BASE=0x3f8
+# CONFIG_CONSOLE_SERIAL_921600 is not set
+# CONFIG_CONSOLE_SERIAL_460800 is not set
+# CONFIG_CONSOLE_SERIAL_230400 is not set
+CONFIG_CONSOLE_SERIAL_115200=y
+# CONFIG_CONSOLE_SERIAL_57600 is not set
+# CONFIG_CONSOLE_SERIAL_38400 is not set
+# CONFIG_CONSOLE_SERIAL_19200 is not set
+# CONFIG_CONSOLE_SERIAL_9600 is not set
+CONFIG_TTYS0_LCS=3
+# CONFIG_SPKMODEM is not set
+# CONFIG_CONSOLE_NE2K is not set
+CONFIG_CONSOLE_CBMEM=y
+# CONFIG_CONSOLE_SPI_FLASH is not set
+# CONFIG_CONSOLE_I2C_SMBUS is not set
+# CONFIG_CONSOLE_SYSTEM76_EC is not set
+# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_8 is not set
+CONFIG_DEFAULT_CONSOLE_LOGLEVEL_7=y
+# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_6 is not set
+# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_5 is not set
+# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_4 is not set
+# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_3 is not set
+# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_2 is not set
+# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_1 is not set
+# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_0 is not set
+CONFIG_DEFAULT_CONSOLE_LOGLEVEL=7
+CONFIG_CONSOLE_USE_LOGLEVEL_PREFIX=y
+CONFIG_CONSOLE_USE_ANSI_ESCAPES=y
+# CONFIG_CMOS_POST is not set
+CONFIG_HWBASE_DEBUG_CB=y
+# end of Console
+
+CONFIG_ACPI_S1_NOT_SUPPORTED=y
+CONFIG_HAVE_ACPI_RESUME=y
+CONFIG_RESUME_PATH_SAME_AS_BOOT=y
+CONFIG_HAVE_MONOTONIC_TIMER=y
+CONFIG_HAVE_OPTION_TABLE=y
+CONFIG_IOAPIC=y
+
+#
+# System tables
+#
+CONFIG_GENERATE_SMBIOS_TABLES=y
+CONFIG_MAINBOARD_SERIAL_NUMBER="123456789"
+# end of System tables
+
+#
+# Payload
+#
+# CONFIG_PAYLOAD_NONE is not set
+# CONFIG_PAYLOAD_ELF is not set
+# CONFIG_PAYLOAD_BOOTBOOT is not set
+# CONFIG_PAYLOAD_FILO is not set
+# CONFIG_PAYLOAD_GRUB2 is not set
+# CONFIG_PAYLOAD_SEAGRUB is not set
+# CONFIG_PAYLOAD_LINUXBOOT is not set
+# CONFIG_PAYLOAD_SEABIOS is not set
+# CONFIG_PAYLOAD_UBOOT is not set
+# CONFIG_PAYLOAD_EDK2 is not set
+CONFIG_PAYLOAD_LINUX=y
+CONFIG_PAYLOAD_FILE="@BOARD_BUILD_DIR@/bzImage"
+CONFIG_PAYLOAD_OPTIONS=""
+# CONFIG_PXE is not set
+CONFIG_LINUX_INITRD="@BOARD_BUILD_DIR@/initrd.cpio.xz"
+CONFIG_COMPRESS_SECONDARY_PAYLOAD=y
+
+#
+# Secondary Payloads
+#
+# CONFIG_COREINFO_SECONDARY_PAYLOAD is not set
+# CONFIG_GRUB2_SECONDARY_PAYLOAD is not set
+# CONFIG_MEMTEST_SECONDARY_PAYLOAD is not set
+# CONFIG_NVRAMCUI_SECONDARY_PAYLOAD is not set
+# CONFIG_SEABIOS_SECONDARY_PAYLOAD is not set
+# CONFIG_TINT_SECONDARY_PAYLOAD is not set
+# CONFIG_COREDOOM_SECONDARY_PAYLOAD is not set
+# end of Secondary Payloads
+# end of Payload
+
+#
+# Debugging
+#
+
+#
+# CPU Debug Settings
+#
+# CONFIG_DISPLAY_MTRRS is not set
+
+#
+# Vendorcode Debug Settings
+#
+
+#
+# BLOB Debug Settings
+#
+# CONFIG_DISPLAY_FSP_CALLS_AND_STATUS is not set
+# CONFIG_DISPLAY_FSP_HEADER is not set
+# CONFIG_VERIFY_HOBS is not set
+# CONFIG_DISPLAY_FSP_VERSION_INFO is not set
+CONFIG_DISPLAY_FSP_VERSION_INFO_2=y
+# CONFIG_ENABLE_FSP_ERROR_INFO is not set
+CONFIG_HAVE_GPIO_SNAPSHOT_VERIFY_SUPPORT=y
+# CONFIG_CHECK_GPIO_CONFIG_CHANGES is not set
+
+#
+# General Debug Settings
+#
+# CONFIG_GDB_STUB is not set
+# CONFIG_FATAL_ASSERTS is not set
+CONFIG_HAVE_DEBUG_GPIO=y
+# CONFIG_DEBUG_GPIO is not set
+# CONFIG_DEBUG_CBFS is not set
+CONFIG_HAVE_DEBUG_RAM_SETUP=y
+# CONFIG_DEBUG_RAM_SETUP is not set
+CONFIG_HAVE_DEBUG_SMBUS=y
+# CONFIG_DEBUG_SMBUS is not set
+# CONFIG_DEBUG_MALLOC is not set
+# CONFIG_DEBUG_CONSOLE_INIT is not set
+# CONFIG_DEBUG_SPI_FLASH is not set
+# CONFIG_DEBUG_BOOT_STATE is not set
+# CONFIG_DEBUG_ADA_CODE is not set
+CONFIG_HAVE_EM100_SUPPORT=y
+# CONFIG_EM100 is not set
+# CONFIG_DEBUG_ACPICA_COMPATIBLE is not set
+# end of Debugging
+
+CONFIG_SPD_READ_BY_WORD=y
+CONFIG_DECOMPRESS_OFAST=y
+CONFIG_WARNINGS_ARE_ERRORS=y
+CONFIG_MAX_REBOOT_CNT=3
+CONFIG_RELOCATABLE_MODULES=y
+CONFIG_GENERIC_GPIO_LIB=y
+CONFIG_HAVE_BOOTBLOCK=y
+CONFIG_HAVE_ROMSTAGE=y
+CONFIG_HAVE_RAMSTAGE=y

From 34ee256dd2f06578769bfb362828fddca0d9f6e9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Wed, 4 Dec 2024 18:11:54 +0100
Subject: [PATCH 10/37] modules/coreboot: bump dasharo fork for PRR lockdown
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 modules/coreboot | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/coreboot b/modules/coreboot
index e37cd6db..e7065458 100644
--- a/modules/coreboot
+++ b/modules/coreboot
@@ -94,7 +94,7 @@ $(eval $(call coreboot_module,purism,24.02.01))
 # MSI and NovaCustom NV4xPZ, NS5xPU, V540TU, V560TU boards are based on Dasharo
 # coreboot fork, based on upstream coreboot version 24.02
 coreboot-dasharo_repo := https://github.com/dasharo/coreboot
-coreboot-dasharo_commit_hash := db1d9cd59d0d7d5b708bbdf8670780914061410c
+coreboot-dasharo_commit_hash := 3fcffcec772e55978d9d59434abd06a6bd67a2c6
 $(eval $(call coreboot_module,dasharo,24.02.01))
 
 # Check that the board configured the coreboot version correctly

From bb6c83de490da1285ea8c777bf35a4e01b3d607f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Wed, 4 Dec 2024 18:13:07 +0100
Subject: [PATCH 11/37] modules/coreboot: add commented out patch version
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 modules/coreboot | 1 +
 1 file changed, 1 insertion(+)

diff --git a/modules/coreboot b/modules/coreboot
index e7065458..e33015a4 100644
--- a/modules/coreboot
+++ b/modules/coreboot
@@ -96,6 +96,7 @@ $(eval $(call coreboot_module,purism,24.02.01))
 coreboot-dasharo_repo := https://github.com/dasharo/coreboot
 coreboot-dasharo_commit_hash := 3fcffcec772e55978d9d59434abd06a6bd67a2c6
 $(eval $(call coreboot_module,dasharo,24.02.01))
+#coreboot-dasharo_patch_version := unreleased
 
 # Check that the board configured the coreboot version correctly
 ifeq "$(CONFIG_COREBOOT_VERSION)" ""

From 6174b63a121faf0e1a28c95f6880118f084ad7b3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Mon, 9 Dec 2024 16:21:45 +0100
Subject: [PATCH 12/37] novacustom-v540tu: enable PR0 lockdown in SMM
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 .../novacustom-v540tu.config                  |  4 ++++
 config/coreboot-novacustom-v540tu.config      | 19 ++++++++++++++++---
 2 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/boards/novacustom-v540tu/novacustom-v540tu.config b/boards/novacustom-v540tu/novacustom-v540tu.config
index 042fa2ff..bbd9f259 100644
--- a/boards/novacustom-v540tu/novacustom-v540tu.config
+++ b/boards/novacustom-v540tu/novacustom-v540tu.config
@@ -69,3 +69,7 @@ export CONFIG_BOOT_KERNEL_REMOVE="intel_iommu=on intel_iommu=igfx_off"
 export CONFIG_BOARD_NAME="NovaCustom V540TU"
 export CONFIG_FLASH_OPTIONS="flashprog --progress --programmer internal"
 export CONFIG_AUTO_BOOT_TIMEOUT=5
+
+#platform locking finalization (PR0)
+CONFIG_IO386=y
+export CONFIG_FINALIZE_PLATFORM_LOCKING=y
diff --git a/config/coreboot-novacustom-v540tu.config b/config/coreboot-novacustom-v540tu.config
index d1a51a7a..cf598b7b 100644
--- a/config/coreboot-novacustom-v540tu.config
+++ b/config/coreboot-novacustom-v540tu.config
@@ -172,7 +172,6 @@ CONFIG_TPM_PIRQ=0x61
 # CONFIG_SOC_INTEL_CSE_SEND_EOP_EARLY is not set
 CONFIG_VBOOT_FWID_VERSION="$(CONFIG_LOCALVERSION)"
 CONFIG_EC_SYSTEM76_EC_BAT_THRESHOLDS=y
-CONFIG_PXE_ROM_ID="10ec,8168"
 CONFIG_BOARD_CLEVO_MTLH_COMMON=y
 CONFIG_BOARD_CLEVO_V5X0TU_BASE=y
 CONFIG_EC_SYSTEM76_EC_FLASH_SIZE=0x40000
@@ -461,6 +460,7 @@ CONFIG_SOC_INTEL_COMMON_BLOCK_XHCI_ELOG=y
 CONFIG_SOC_INTEL_COMMON_PCH_CLIENT=y
 CONFIG_SOC_INTEL_COMMON_PCH_BASE=y
 CONFIG_SOC_INTEL_COMMON_PCH_LOCKDOWN=y
+CONFIG_SOC_INTEL_COMMON_SPI_LOCKDOWN_SMM=y
 CONFIG_PCH_SPECIFIC_BASE_OPTIONS=y
 CONFIG_PCH_SPECIFIC_DISCRETE_OPTIONS=y
 CONFIG_PCH_SPECIFIC_CLIENT_OPTIONS=y
@@ -524,8 +524,10 @@ CONFIG_PCIEXP_HOTPLUG=y
 CONFIG_INTEL_DESCRIPTOR_MODE_REQUIRED=y
 CONFIG_SOUTHBRIDGE_INTEL_COMMON_SMBUS=y
 CONFIG_SOUTHBRIDGE_INTEL_COMMON_PIRQ_ACPI_GEN=y
+CONFIG_HAVE_INTEL_CHIPSET_LOCKDOWN=y
 CONFIG_INTEL_DESCRIPTOR_MODE_CAPABLE=y
 # CONFIG_VALIDATE_INTEL_DESCRIPTOR is not set
+# CONFIG_INTEL_CHIPSET_LOCKDOWN is not set
 CONFIG_FIXED_RCBA_MMIO_BASE=0xfed1c000
 CONFIG_RCBA_LENGTH=0x4000
 
@@ -659,6 +661,7 @@ CONFIG_MRC_CACHE_USING_MRC_VERSION=y
 CONFIG_SPI_FLASH=y
 CONFIG_BOOT_DEVICE_SPI_FLASH_RW_NOMMAP=y
 CONFIG_BOOT_DEVICE_SPI_FLASH_RW_NOMMAP_EARLY=y
+CONFIG_SPI_FLASH_SMM=y
 # CONFIG_SPI_FLASH_NO_FAST_READ is not set
 CONFIG_TPM_INIT_RAMSTAGE=y
 CONFIG_TPM_PPI=y
@@ -776,9 +779,12 @@ CONFIG_PLATFORM_HAS_DRAM_CLEAR=y
 # CONFIG_INTEL_TXT is not set
 # CONFIG_STM is not set
 # CONFIG_INTEL_CBNT_SUPPORT is not set
-CONFIG_BOOTMEDIA_LOCK_NONE=y
-# CONFIG_BOOTMEDIA_LOCK_CONTROLLER is not set
+# CONFIG_BOOTMEDIA_LOCK_NONE is not set
+CONFIG_BOOTMEDIA_LOCK_CONTROLLER=y
 # CONFIG_BOOTMEDIA_LOCK_CHIP is not set
+CONFIG_BOOTMEDIA_LOCK_WHOLE_RO=y
+# CONFIG_BOOTMEDIA_LOCK_WHOLE_NO_ACCESS is not set
+# CONFIG_BOOTMEDIA_LOCK_WPRO_VBOOT_RO is not set
 # CONFIG_BOOTMEDIA_SMM_BWP is not set
 # end of Security
 
@@ -870,6 +876,13 @@ CONFIG_PAYLOAD_FILE="@BOARD_BUILD_DIR@/bzImage"
 CONFIG_PAYLOAD_OPTIONS=""
 # CONFIG_PXE is not set
 CONFIG_LINUX_INITRD="@BOARD_BUILD_DIR@/initrd.cpio.xz"
+
+#
+# Dasharo specific payload options
+#
+# end of Dasharo specific payload options
+
+# CONFIG_PAYLOAD_IS_FLAT_BINARY is not set
 CONFIG_COMPRESS_SECONDARY_PAYLOAD=y
 
 #

From 5b444119ca53119db86eed3f49b4f46e1da14927 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Mon, 9 Dec 2024 16:30:16 +0100
Subject: [PATCH 13/37] config/coreboot-novacustom-v540tu.config: disable
 serial console
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 config/coreboot-novacustom-v540tu.config | 18 ++----------------
 1 file changed, 2 insertions(+), 16 deletions(-)

diff --git a/config/coreboot-novacustom-v540tu.config b/config/coreboot-novacustom-v540tu.config
index cf598b7b..24f71fd8 100644
--- a/config/coreboot-novacustom-v540tu.config
+++ b/config/coreboot-novacustom-v540tu.config
@@ -115,7 +115,7 @@ CONFIG_FMDFILE=""
 # CONFIG_NO_POST is not set
 CONFIG_MAINBOARD_VENDOR="Clevo"
 CONFIG_CBFS_SIZE=0x1000000
-CONFIG_CONSOLE_SERIAL=y
+# CONFIG_CONSOLE_SERIAL is not set
 CONFIG_MAX_CPUS=22
 CONFIG_ONBOARD_VGA_IS_PRIMARY=y
 # CONFIG_POST_DEVICE is not set
@@ -201,7 +201,6 @@ CONFIG_PCIEXP_HOTPLUG_MEM=0xc200000
 CONFIG_PCIEXP_HOTPLUG_PREFETCH_MEM=0x1c000000
 CONFIG_PS2K_EISAID="PNP0303"
 CONFIG_PS2M_EISAID="PNP0F13"
-CONFIG_TTYS0_BAUD=115200
 CONFIG_POWER_STATE_DEFAULT_ON_AFTER_FAILURE=y
 CONFIG_D3COLD_SUPPORT=y
 CONFIG_PCIEXP_ASPM=y
@@ -808,23 +807,10 @@ CONFIG_BOOTBLOCK_CONSOLE=y
 CONFIG_POSTCAR_CONSOLE=y
 CONFIG_SQUELCH_EARLY_SMP=y
 CONFIG_FIXED_UART_FOR_CONSOLE=y
-
-#
-# memory mapped, 8250-compatible
-#
-CONFIG_TTYS0_BASE=0x3f8
-# CONFIG_CONSOLE_SERIAL_921600 is not set
-# CONFIG_CONSOLE_SERIAL_460800 is not set
-# CONFIG_CONSOLE_SERIAL_230400 is not set
-CONFIG_CONSOLE_SERIAL_115200=y
-# CONFIG_CONSOLE_SERIAL_57600 is not set
-# CONFIG_CONSOLE_SERIAL_38400 is not set
-# CONFIG_CONSOLE_SERIAL_19200 is not set
-# CONFIG_CONSOLE_SERIAL_9600 is not set
-CONFIG_TTYS0_LCS=3
 # CONFIG_SPKMODEM is not set
 # CONFIG_CONSOLE_NE2K is not set
 CONFIG_CONSOLE_CBMEM=y
+# CONFIG_CONSOLE_CBMEM_DUMP_TO_UART is not set
 # CONFIG_CONSOLE_SPI_FLASH is not set
 # CONFIG_CONSOLE_I2C_SMBUS is not set
 # CONFIG_CONSOLE_SYSTEM76_EC is not set

From 1d7b442668ae39330ebf8fa13779331a66228177 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Tue, 10 Dec 2024 12:41:39 +0100
Subject: [PATCH 14/37] novacustom-v560tu: sync to v540tu
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 .../novacustom-v560tu.config                  |  4 ++
 config/coreboot-novacustom-v560tu.config      | 37 +++++++++----------
 2 files changed, 22 insertions(+), 19 deletions(-)

diff --git a/boards/novacustom-v560tu/novacustom-v560tu.config b/boards/novacustom-v560tu/novacustom-v560tu.config
index b3665105..eb92388c 100644
--- a/boards/novacustom-v560tu/novacustom-v560tu.config
+++ b/boards/novacustom-v560tu/novacustom-v560tu.config
@@ -69,3 +69,7 @@ export CONFIG_BOOT_KERNEL_REMOVE="intel_iommu=on intel_iommu=igfx_off"
 export CONFIG_BOARD_NAME="NovaCustom V540TU"
 export CONFIG_FLASH_OPTIONS="flashprog --progress --programmer internal"
 export CONFIG_AUTO_BOOT_TIMEOUT=5
+
+#platform locking finalization (PR0)
+CONFIG_IO386=y
+export CONFIG_FINALIZE_PLATFORM_LOCKING=y
diff --git a/config/coreboot-novacustom-v560tu.config b/config/coreboot-novacustom-v560tu.config
index a80dc4f4..a7c15d33 100644
--- a/config/coreboot-novacustom-v560tu.config
+++ b/config/coreboot-novacustom-v560tu.config
@@ -115,7 +115,7 @@ CONFIG_FMDFILE=""
 # CONFIG_NO_POST is not set
 CONFIG_MAINBOARD_VENDOR="Clevo"
 CONFIG_CBFS_SIZE=0x1000000
-CONFIG_CONSOLE_SERIAL=y
+# CONFIG_CONSOLE_SERIAL is not set
 CONFIG_MAX_CPUS=22
 CONFIG_ONBOARD_VGA_IS_PRIMARY=y
 # CONFIG_POST_DEVICE is not set
@@ -172,7 +172,6 @@ CONFIG_TPM_PIRQ=0x61
 # CONFIG_SOC_INTEL_CSE_SEND_EOP_EARLY is not set
 CONFIG_VBOOT_FWID_VERSION="$(CONFIG_LOCALVERSION)"
 CONFIG_EC_SYSTEM76_EC_BAT_THRESHOLDS=y
-CONFIG_PXE_ROM_ID="10ec,8168"
 CONFIG_BOARD_CLEVO_MTLH_COMMON=y
 CONFIG_BOARD_CLEVO_V5X0TU_BASE=y
 CONFIG_EC_SYSTEM76_EC_FLASH_SIZE=0x40000
@@ -202,7 +201,6 @@ CONFIG_PCIEXP_HOTPLUG_MEM=0xc200000
 CONFIG_PCIEXP_HOTPLUG_PREFETCH_MEM=0x1c000000
 CONFIG_PS2K_EISAID="PNP0303"
 CONFIG_PS2M_EISAID="PNP0F13"
-CONFIG_TTYS0_BAUD=115200
 CONFIG_POWER_STATE_DEFAULT_ON_AFTER_FAILURE=y
 CONFIG_D3COLD_SUPPORT=y
 CONFIG_PCIEXP_ASPM=y
@@ -461,6 +459,7 @@ CONFIG_SOC_INTEL_COMMON_BLOCK_XHCI_ELOG=y
 CONFIG_SOC_INTEL_COMMON_PCH_CLIENT=y
 CONFIG_SOC_INTEL_COMMON_PCH_BASE=y
 CONFIG_SOC_INTEL_COMMON_PCH_LOCKDOWN=y
+CONFIG_SOC_INTEL_COMMON_SPI_LOCKDOWN_SMM=y
 CONFIG_PCH_SPECIFIC_BASE_OPTIONS=y
 CONFIG_PCH_SPECIFIC_DISCRETE_OPTIONS=y
 CONFIG_PCH_SPECIFIC_CLIENT_OPTIONS=y
@@ -524,8 +523,10 @@ CONFIG_PCIEXP_HOTPLUG=y
 CONFIG_INTEL_DESCRIPTOR_MODE_REQUIRED=y
 CONFIG_SOUTHBRIDGE_INTEL_COMMON_SMBUS=y
 CONFIG_SOUTHBRIDGE_INTEL_COMMON_PIRQ_ACPI_GEN=y
+CONFIG_HAVE_INTEL_CHIPSET_LOCKDOWN=y
 CONFIG_INTEL_DESCRIPTOR_MODE_CAPABLE=y
 # CONFIG_VALIDATE_INTEL_DESCRIPTOR is not set
+# CONFIG_INTEL_CHIPSET_LOCKDOWN is not set
 CONFIG_FIXED_RCBA_MMIO_BASE=0xfed1c000
 CONFIG_RCBA_LENGTH=0x4000
 
@@ -659,6 +660,7 @@ CONFIG_MRC_CACHE_USING_MRC_VERSION=y
 CONFIG_SPI_FLASH=y
 CONFIG_BOOT_DEVICE_SPI_FLASH_RW_NOMMAP=y
 CONFIG_BOOT_DEVICE_SPI_FLASH_RW_NOMMAP_EARLY=y
+CONFIG_SPI_FLASH_SMM=y
 # CONFIG_SPI_FLASH_NO_FAST_READ is not set
 CONFIG_TPM_INIT_RAMSTAGE=y
 CONFIG_TPM_PPI=y
@@ -776,9 +778,12 @@ CONFIG_PLATFORM_HAS_DRAM_CLEAR=y
 # CONFIG_INTEL_TXT is not set
 # CONFIG_STM is not set
 # CONFIG_INTEL_CBNT_SUPPORT is not set
-CONFIG_BOOTMEDIA_LOCK_NONE=y
-# CONFIG_BOOTMEDIA_LOCK_CONTROLLER is not set
+# CONFIG_BOOTMEDIA_LOCK_NONE is not set
+CONFIG_BOOTMEDIA_LOCK_CONTROLLER=y
 # CONFIG_BOOTMEDIA_LOCK_CHIP is not set
+CONFIG_BOOTMEDIA_LOCK_WHOLE_RO=y
+# CONFIG_BOOTMEDIA_LOCK_WHOLE_NO_ACCESS is not set
+# CONFIG_BOOTMEDIA_LOCK_WPRO_VBOOT_RO is not set
 # CONFIG_BOOTMEDIA_SMM_BWP is not set
 # end of Security
 
@@ -802,23 +807,10 @@ CONFIG_BOOTBLOCK_CONSOLE=y
 CONFIG_POSTCAR_CONSOLE=y
 CONFIG_SQUELCH_EARLY_SMP=y
 CONFIG_FIXED_UART_FOR_CONSOLE=y
-
-#
-# memory mapped, 8250-compatible
-#
-CONFIG_TTYS0_BASE=0x3f8
-# CONFIG_CONSOLE_SERIAL_921600 is not set
-# CONFIG_CONSOLE_SERIAL_460800 is not set
-# CONFIG_CONSOLE_SERIAL_230400 is not set
-CONFIG_CONSOLE_SERIAL_115200=y
-# CONFIG_CONSOLE_SERIAL_57600 is not set
-# CONFIG_CONSOLE_SERIAL_38400 is not set
-# CONFIG_CONSOLE_SERIAL_19200 is not set
-# CONFIG_CONSOLE_SERIAL_9600 is not set
-CONFIG_TTYS0_LCS=3
 # CONFIG_SPKMODEM is not set
 # CONFIG_CONSOLE_NE2K is not set
 CONFIG_CONSOLE_CBMEM=y
+# CONFIG_CONSOLE_CBMEM_DUMP_TO_UART is not set
 # CONFIG_CONSOLE_SPI_FLASH is not set
 # CONFIG_CONSOLE_I2C_SMBUS is not set
 # CONFIG_CONSOLE_SYSTEM76_EC is not set
@@ -870,6 +862,13 @@ CONFIG_PAYLOAD_FILE="@BOARD_BUILD_DIR@/bzImage"
 CONFIG_PAYLOAD_OPTIONS=""
 # CONFIG_PXE is not set
 CONFIG_LINUX_INITRD="@BOARD_BUILD_DIR@/initrd.cpio.xz"
+
+#
+# Dasharo specific payload options
+#
+# end of Dasharo specific payload options
+
+# CONFIG_PAYLOAD_IS_FLAT_BINARY is not set
 CONFIG_COMPRESS_SECONDARY_PAYLOAD=y
 
 #

From ac43d5e78b37919f4cd07e947de637b69aa674d2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Tue, 10 Dec 2024 13:10:06 +0100
Subject: [PATCH 15/37] config/coreboot-novacustom-v5*: bump version to rc2
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 config/coreboot-novacustom-v540tu.config | 2 +-
 config/coreboot-novacustom-v560tu.config | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/config/coreboot-novacustom-v540tu.config b/config/coreboot-novacustom-v540tu.config
index 24f71fd8..31d36b1a 100644
--- a/config/coreboot-novacustom-v540tu.config
+++ b/config/coreboot-novacustom-v540tu.config
@@ -7,7 +7,7 @@
 # General setup
 #
 CONFIG_COREBOOT_BUILD=y
-CONFIG_LOCALVERSION="v0.9.0-rc1"
+CONFIG_LOCALVERSION="v0.9.0-rc2"
 CONFIG_CBFS_PREFIX="fallback"
 CONFIG_COMPILER_GCC=y
 # CONFIG_COMPILER_LLVM_CLANG is not set
diff --git a/config/coreboot-novacustom-v560tu.config b/config/coreboot-novacustom-v560tu.config
index a7c15d33..f4726577 100644
--- a/config/coreboot-novacustom-v560tu.config
+++ b/config/coreboot-novacustom-v560tu.config
@@ -7,7 +7,7 @@
 # General setup
 #
 CONFIG_COREBOOT_BUILD=y
-CONFIG_LOCALVERSION="v0.9.0-rc1"
+CONFIG_LOCALVERSION="v0.9.0-rc2"
 CONFIG_CBFS_PREFIX="fallback"
 CONFIG_COMPILER_GCC=y
 # CONFIG_COMPILER_LLVM_CLANG is not set

From b5fe89903de2b5db0f127e1fbf280315171c7096 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Tue, 10 Dec 2024 18:22:00 +0100
Subject: [PATCH 16/37] config/coreboot-novacustom-v5*: set ME HAP, prefer S3
 sleep
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 config/coreboot-novacustom-v540tu.config | 8 ++++----
 config/coreboot-novacustom-v560tu.config | 8 ++++----
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/config/coreboot-novacustom-v540tu.config b/config/coreboot-novacustom-v540tu.config
index 31d36b1a..a4940ba3 100644
--- a/config/coreboot-novacustom-v540tu.config
+++ b/config/coreboot-novacustom-v540tu.config
@@ -550,9 +550,9 @@ CONFIG_HAVE_ME_BIN=y
 # CONFIG_ME_REGION_ALLOW_CPU_READ_ACCESS is not set
 CONFIG_HAVE_INTEL_ME_HAP=y
 # CONFIG_INTEL_ME_DISABLED_HECI is not set
-# CONFIG_INTEL_ME_DISABLED_HAP is not set
-CONFIG_INTEL_ME_ENABLED=y
-CONFIG_INTEL_ME_DEFAULT_STATE=0
+CONFIG_INTEL_ME_DISABLED_HAP=y
+# CONFIG_INTEL_ME_ENABLED is not set
+CONFIG_INTEL_ME_DEFAULT_STATE=2
 CONFIG_MAINBOARD_USES_IFD_GBE_REGION=y
 CONFIG_HAVE_GBE_BIN=y
 # CONFIG_DO_NOT_TOUCH_DESCRIPTOR_REGION is not set
@@ -567,7 +567,7 @@ CONFIG_BIOS_VENDOR="3mdeb"
 #
 # Dasharo Configuration
 #
-# CONFIG_DASHARO_PREFER_S3_SLEEP is not set
+CONFIG_DASHARO_PREFER_S3_SLEEP=y
 CONFIG_DASHARO_FIRMWARE_UPDATE_MODE=y
 # end of Dasharo Configuration
 
diff --git a/config/coreboot-novacustom-v560tu.config b/config/coreboot-novacustom-v560tu.config
index f4726577..debec074 100644
--- a/config/coreboot-novacustom-v560tu.config
+++ b/config/coreboot-novacustom-v560tu.config
@@ -550,9 +550,9 @@ CONFIG_HAVE_ME_BIN=y
 # CONFIG_ME_REGION_ALLOW_CPU_READ_ACCESS is not set
 CONFIG_HAVE_INTEL_ME_HAP=y
 # CONFIG_INTEL_ME_DISABLED_HECI is not set
-# CONFIG_INTEL_ME_DISABLED_HAP is not set
-CONFIG_INTEL_ME_ENABLED=y
-CONFIG_INTEL_ME_DEFAULT_STATE=0
+CONFIG_INTEL_ME_DISABLED_HAP=y
+# CONFIG_INTEL_ME_ENABLED is not set
+CONFIG_INTEL_ME_DEFAULT_STATE=2
 CONFIG_MAINBOARD_USES_IFD_GBE_REGION=y
 CONFIG_HAVE_GBE_BIN=y
 # CONFIG_DO_NOT_TOUCH_DESCRIPTOR_REGION is not set
@@ -567,7 +567,7 @@ CONFIG_BIOS_VENDOR="3mdeb"
 #
 # Dasharo Configuration
 #
-# CONFIG_DASHARO_PREFER_S3_SLEEP is not set
+CONFIG_DASHARO_PREFER_S3_SLEEP=y
 CONFIG_DASHARO_FIRMWARE_UPDATE_MODE=y
 # end of Dasharo Configuration
 

From 7323fef60432ddc2e41132b9905ffa0bce297265 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Tue, 10 Dec 2024 18:24:47 +0100
Subject: [PATCH 17/37] modules/coreboot: bump for MTL S3
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 modules/coreboot | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/coreboot b/modules/coreboot
index e33015a4..4098ce8d 100644
--- a/modules/coreboot
+++ b/modules/coreboot
@@ -94,7 +94,7 @@ $(eval $(call coreboot_module,purism,24.02.01))
 # MSI and NovaCustom NV4xPZ, NS5xPU, V540TU, V560TU boards are based on Dasharo
 # coreboot fork, based on upstream coreboot version 24.02
 coreboot-dasharo_repo := https://github.com/dasharo/coreboot
-coreboot-dasharo_commit_hash := 3fcffcec772e55978d9d59434abd06a6bd67a2c6
+coreboot-dasharo_commit_hash := 9ead4a0789595fc6b6b0327e168088893b6ea592
 $(eval $(call coreboot_module,dasharo,24.02.01))
 #coreboot-dasharo_patch_version := unreleased
 

From c516918fac6c821d3c520e53f6f452c49926e95b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Wed, 11 Dec 2024 18:31:11 +0100
Subject: [PATCH 18/37] patches/coreboot-dasharo-unreleased: add back JPEG
 patches
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 modules/coreboot                              |      2 +-
 ...wuffs-upgrade-to-Wuffs_0.4.0-alpha.8.patch | 111421 +++++++++++++++
 ...ib_jpeg-avoidcalling-malloc-and-free.patch |     91 +
 ...002-pr0_chipset_locking-post_skylake.patch |    391 -
 ...N-CONFIG_DOMAIN_RESOURCE_32BIT_LIMIT.patch |    130 +
 5 files changed, 111643 insertions(+), 392 deletions(-)
 create mode 100644 patches/coreboot-dasharo-unreleased/0001-vc_wuffs-upgrade-to-Wuffs_0.4.0-alpha.8.patch
 create mode 100644 patches/coreboot-dasharo-unreleased/0002-lib_jpeg-avoidcalling-malloc-and-free.patch
 delete mode 100644 patches/coreboot-dasharo-unreleased/0002-pr0_chipset_locking-post_skylake.patch
 create mode 100644 patches/coreboot-dasharo-unreleased/0003-CONFIG_RESOURCE_ALLOCATION_TOP_DOWN-CONFIG_DOMAIN_RESOURCE_32BIT_LIMIT.patch

diff --git a/modules/coreboot b/modules/coreboot
index 4098ce8d..ff7815e2 100644
--- a/modules/coreboot
+++ b/modules/coreboot
@@ -96,7 +96,7 @@ $(eval $(call coreboot_module,purism,24.02.01))
 coreboot-dasharo_repo := https://github.com/dasharo/coreboot
 coreboot-dasharo_commit_hash := 9ead4a0789595fc6b6b0327e168088893b6ea592
 $(eval $(call coreboot_module,dasharo,24.02.01))
-#coreboot-dasharo_patch_version := unreleased
+coreboot-dasharo_patch_version := unreleased
 
 # Check that the board configured the coreboot version correctly
 ifeq "$(CONFIG_COREBOOT_VERSION)" ""
diff --git a/patches/coreboot-dasharo-unreleased/0001-vc_wuffs-upgrade-to-Wuffs_0.4.0-alpha.8.patch b/patches/coreboot-dasharo-unreleased/0001-vc_wuffs-upgrade-to-Wuffs_0.4.0-alpha.8.patch
new file mode 100644
index 00000000..7208d5eb
--- /dev/null
+++ b/patches/coreboot-dasharo-unreleased/0001-vc_wuffs-upgrade-to-Wuffs_0.4.0-alpha.8.patch
@@ -0,0 +1,111421 @@
+From b598d05d389e137baa10e277a37fca2c363fb295 Mon Sep 17 00:00:00 2001
+From: Nigel Tao <nigeltao@golang.org>
+Date: Tue, 13 Aug 2024 22:10:52 +1000
+Subject: [PATCH] vc/wuffs: upgrade to Wuffs 0.4.0-alpha.8
+
+We were previously at Wuffs 0.4.0-alpha.2. The C file was copied from
+https://github.com/google/wuffs-mirror-release-c and its hash matches
+https://github.com/google/wuffs-mirror-release-c/blob/90e4d81a6a8b7b601e8e568da32a105d7f7705e5/sync.txt#L9-L10
+
+$ sha256sum src/vendorcode/wuffs/wuffs-v0.4.c
+6c22caff4af929112601379a73f72461bc4719a5215366bcc90d599cbc442bb6  src/vendorcode/wuffs/wuffs-v0.4.c
+
+Change-Id: Ie90d989384e0db2b23d7d1b3d9a57920ac8a95a2
+Signed-off-by: Nigel Tao <nigeltao@golang.org>
+Reviewed-on: https://review.coreboot.org/c/coreboot/+/83894
+Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
+Reviewed-by: Nico Huber <nico.h@gmx.de>
+Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
+---
+ src/vendorcode/wuffs/wuffs-v0.4.c | 101194 ++++++++++++++++-----------
+ 1 file changed, 58878 insertions(+), 42316 deletions(-)
+
+diff --git a/src/vendorcode/wuffs/wuffs-v0.4.c b/src/vendorcode/wuffs/wuffs-v0.4.c
+index bce9eb9798..0c6616a652 100644
+--- a/src/vendorcode/wuffs/wuffs-v0.4.c
++++ b/src/vendorcode/wuffs/wuffs-v0.4.c
+@@ -81,15 +81,43 @@ extern "C" {
+ // each major.minor branch, the commit count should increase monotonically.
+ //
+ // WUFFS_VERSION was overridden by "wuffs gen -version" based on revision
+-// ae8531f7f846fbbe3a7340bf88499ad294a1367b committed on 2023-10-07.
++// 5d69840f8e7ca481551b02c7e8d4c5fb69521bb9 committed on 2024-08-12.
+ #define WUFFS_VERSION 0x000040000
+ #define WUFFS_VERSION_MAJOR 0
+ #define WUFFS_VERSION_MINOR 4
+ #define WUFFS_VERSION_PATCH 0
+-#define WUFFS_VERSION_PRE_RELEASE_LABEL "alpha.2"
+-#define WUFFS_VERSION_BUILD_METADATA_COMMIT_COUNT 3603
+-#define WUFFS_VERSION_BUILD_METADATA_COMMIT_DATE 20231007
+-#define WUFFS_VERSION_STRING "0.4.0-alpha.2+3603.20231007"
++#define WUFFS_VERSION_PRE_RELEASE_LABEL "alpha.8"
++#define WUFFS_VERSION_BUILD_METADATA_COMMIT_COUNT 3796
++#define WUFFS_VERSION_BUILD_METADATA_COMMIT_DATE 20240812
++#define WUFFS_VERSION_STRING "0.4.0-alpha.8+3796.20240812"
++
++// ---------------- Private Implementation Macros Re-definition Check
++
++// Users (those who #include the "wuffs-vM.N.c" file) should not define any
++// WUFFS_PRIVATE_IMPL__ETC macros, only WUFFS_CONFIG__ETC macros (and
++// WUFFS_IMPLEMENTATION). Mucking about with the private implementation macros
++// is not supported and may break when upgrading to newer Wuffs versions.
++
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_CRC32) ||       \
++    defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON) ||        \
++    defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64) ||          \
++    defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2) ||       \
++    defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3) ||       \
++    defined(WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE) || \
++    defined(WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION) ||     \
++    defined(WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL) ||      \
++    defined(WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U16) ||        \
++    defined(WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U32) ||        \
++    defined(WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U64) ||        \
++    defined(WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U8)
++
++#if defined(__GNUC__) || defined(__clang__)
++#warning "Defining WUFFS_PRIVATE_IMPL__ETC yourself is not supported"
++#elif defined(_MSC_VER)
++#pragma message("Defining WUFFS_PRIVATE_IMPL__ETC yourself is not supported")
++#endif
++
++#endif
+ 
+ // ---------------- Configuration
+ 
+@@ -117,11 +145,11 @@ extern "C" {
+ // intrinsics. Look for __ARM_FEATURE_CRC32 instead.
+ #if defined(__ARM_FEATURE_CRC32)
+ #include <arm_acle.h>
+-#define WUFFS_BASE__CPU_ARCH__ARM_CRC32
++#define WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_CRC32
+ #endif  // defined(__ARM_FEATURE_CRC32)
+ #if defined(__ARM_NEON)
+ #include <arm_neon.h>
+-#define WUFFS_BASE__CPU_ARCH__ARM_NEON
++#define WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON
+ #endif  // defined(__ARM_NEON)
+ #endif  // defined(__ARM_FEATURE_UNALIGNED) etc
+ 
+@@ -129,26 +157,82 @@ extern "C" {
+ // POPCNT. This is checked at runtime via cpuid, not at compile time.
+ //
+ // Likewise, "cpu_arch >= x86_avx2" also requires PCLMUL, POPCNT and SSE4.2.
+-#if defined(__i386__) || defined(__x86_64__)
++//
++// ----
++//
++// Technically, we could use the SSE family on 32-bit x86, not just 64-bit x86.
++// But some intrinsics don't compile in 32-bit mode. It's not worth the hassle.
++// https://github.com/google/wuffs/issues/145
++#if defined(__x86_64__)
+ #if !defined(__native_client__)
+ #include <cpuid.h>
+ #include <x86intrin.h>
+-// X86_FAMILY means X86 (32-bit) or X86_64 (64-bit, obviously).
+-#define WUFFS_BASE__CPU_ARCH__X86_FAMILY
+-#if defined(__x86_64__)
+-#define WUFFS_BASE__CPU_ARCH__X86_64
+-#endif  // defined(__x86_64__)
++#define WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64
++#define WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2
++#define WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3
+ #endif  // !defined(__native_client__)
+-#endif  // defined(__i386__) || defined(__x86_64__)
++#endif  // defined(__x86_64__)
+ 
+ #elif defined(_MSC_VER)  // (#if-chain ref AVOID_CPU_ARCH_1)
+ 
+-#if defined(_M_IX86) || defined(_M_X64)
+-#if defined(__AVX__) || defined(__clang__)
++#if defined(_M_X64)
++
++// On X86_64, Microsoft Visual C/C++ (MSVC) only supports SSE2 by default.
++// There are /arch:SSE2, /arch:AVX and /arch:AVX2 compiler flags (the AVX2 one
++// is roughly equivalent to X86_64_V3), but there is no /arch:SSE42 compiler
++// flag that's equivalent to X86_64_V2.
++//
++// For getting maximum performance with X86_64 MSVC and Wuffs, pass /arch:AVX2
++// (and then test on the oldest hardware you intend to support).
++//
++// Absent that compiler flag, either define one of the three macros listed
++// below or else the X86_64 SIMD code will be disabled and you'll get a #pragma
++// message stating this library "performs best with /arch:AVX2". This message
++// is harmless and ignorable, in that the non-SIMD code is still correct and
++// reasonably performant, but is a reminder that when combining Wuffs and MSVC,
++// some compiler configuration is required for maximum performance.
++//
++//  - WUFFS_CONFIG__DISABLE_MSVC_CPU_ARCH__X86_64_FAMILY
++//  - WUFFS_CONFIG__ENABLE_MSVC_CPU_ARCH__X86_64_V2 (enables SSE4.2 and below)
++//  - WUFFS_CONFIG__ENABLE_MSVC_CPU_ARCH__X86_64_V3 (enables AVX2 and below)
++//
++// Defining the first one (WUFFS_CONFIG__DISABLE_MSVC_CPU_ARCH__X86_64_FAMILY)
++// or defining none of those three (the default state) are equivalent (in that
++// both disable the SIMD code paths), other than that pragma message.
++//
++// When defining these WUFFS_CONFIG__ENABLE_ETC macros with MSVC, be aware that
++// some users report it leading to ICEs (Internal Compiler Errors), but other
++// users report no problems at all (and improved performance). It's unclear
++// exactly what combination of SIMD code and MSVC configuration lead to ICEs.
++// Do your own testing with your own MSVC version and configuration.
++//
++// https://github.com/google/wuffs/issues/148
++// https://github.com/google/wuffs/issues/151
++// https://developercommunity.visualstudio.com/t/fatal--error-C1001:-Internal-compiler-er/10703305
++//
++// Clang (including clang-cl) and GCC don't need this WUFFS_CONFIG__ETC macro
++// machinery, or having the Wuffs-the-library user to fiddle with compiler
++// flags, because they support "__attribute__((target(arg)))".
++#if defined(__AVX2__) || defined(__clang__) || \
++    defined(WUFFS_CONFIG__ENABLE_MSVC_CPU_ARCH__X86_64_V3)
++#define WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64
++#define WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2
++#define WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3
++#elif defined(WUFFS_CONFIG__ENABLE_MSVC_CPU_ARCH__X86_64_V2)
++#define WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64
++#define WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2
++#elif !defined(WUFFS_CONFIG__DISABLE_MSVC_CPU_ARCH__X86_64_FAMILY)
++#pragma message("Wuffs with MSVC+X64 performs best with /arch:AVX2")
++#endif  // defined(__AVX2__) || defined(__clang__) || etc
++
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64)
++
++#if defined(WUFFS_CONFIG__DISABLE_MSVC_CPU_ARCH__X86_64_FAMILY)
++#error "MSVC_CPU_ARCH simultaneously enabled and disabled"
++#endif
+ 
+-// We need <intrin.h> for the __cpuid function.
+ #include <intrin.h>
+-// That's not enough for X64 SIMD, with clang-cl, if we want to use
++// intrin.h isn't enough for X64 SIMD, with clang-cl, if we want to use
+ // "__attribute__((target(arg)))" without e.g. "/arch:AVX".
+ //
+ // Some web pages suggest that <immintrin.h> is all you need, as it pulls in
+@@ -157,25 +241,9 @@ extern "C" {
+ #include <immintrin.h>  // AVX, AVX2, FMA, POPCNT
+ #include <nmmintrin.h>  // SSE4.2
+ #include <wmmintrin.h>  // AES, PCLMUL
+-// X86_FAMILY means X86 (32-bit) or X86_64 (64-bit, obviously).
+-#define WUFFS_BASE__CPU_ARCH__X86_FAMILY
+-#if defined(_M_X64)
+-#define WUFFS_BASE__CPU_ARCH__X86_64
+-#endif  // defined(_M_X64)
+-
+-#else  // defined(__AVX__) || defined(__clang__)
+-
+-// clang-cl (which defines both __clang__ and _MSC_VER) supports
+-// "__attribute__((target(arg)))".
+-//
+-// For MSVC's cl.exe (unlike clang or gcc), SIMD capability is a compile-time
+-// property of the source file (e.g. a /arch:AVX or -mavx compiler flag), not
+-// of individual functions (that can be conditionally selected at runtime).
+-#pragma message("Wuffs with MSVC+IX86/X64 needs /arch:AVX for best performance")
+-
+-#endif  // defined(__AVX__) || defined(__clang__)
+-#endif  // defined(_M_IX86) || defined(_M_X64)
+ 
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64)
++#endif  // defined(_M_X64)
+ #endif  // (#if-chain ref AVOID_CPU_ARCH_1)
+ #endif  // (#if-chain ref AVOID_CPU_ARCH_0)
+ 
+@@ -198,20 +266,20 @@ extern "C" {
+ 
+ static inline bool  //
+ wuffs_base__cpu_arch__have_arm_crc32(void) {
+-#if defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32)
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_CRC32)
+   return true;
+ #else
+   return false;
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32)
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_CRC32)
+ }
+ 
+ static inline bool  //
+ wuffs_base__cpu_arch__have_arm_neon(void) {
+-#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
+   return true;
+ #else
+   return false;
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
+ }
+ 
+ static inline bool  //
+@@ -220,7 +288,7 @@ wuffs_base__cpu_arch__have_x86_avx2(void) {
+     defined(__AVX2__)
+   return true;
+ #else
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64)
+   // GCC defines these macros but MSVC does not.
+   //  - bit_AVX2 = (1 <<  5)
+   const unsigned int avx2_ebx7 = 0x00000020;
+@@ -258,9 +326,9 @@ wuffs_base__cpu_arch__have_x86_avx2(void) {
+     }
+   }
+ #else
+-#error "WUFFS_BASE__CPU_ARCH__ETC combined with an unsupported compiler"
++#error "WUFFS_PRIVATE_IMPL__CPU_ARCH__ETC combined with an unsupported compiler"
+ #endif  // defined(__GNUC__); defined(_MSC_VER)
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_64)
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64)
+   return false;
+ #endif  // defined(__PCLMUL__) && defined(__POPCNT__) && defined(__SSE4_2__) &&
+         // defined(__AVX2__)
+@@ -271,7 +339,7 @@ wuffs_base__cpu_arch__have_x86_bmi2(void) {
+ #if defined(__BMI2__)
+   return true;
+ #else
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64)
+   // GCC defines these macros but MSVC does not.
+   //  - bit_BMI2 = (1 <<  8)
+   const unsigned int bmi2_ebx7 = 0x00000100;
+@@ -293,9 +361,9 @@ wuffs_base__cpu_arch__have_x86_bmi2(void) {
+     return true;
+   }
+ #else
+-#error "WUFFS_BASE__CPU_ARCH__ETC combined with an unsupported compiler"
++#error "WUFFS_PRIVATE_IMPL__CPU_ARCH__ETC combined with an unsupported compiler"
+ #endif  // defined(__GNUC__); defined(_MSC_VER)
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64)
+   return false;
+ #endif  // defined(__BMI2__)
+ }
+@@ -305,7 +373,7 @@ wuffs_base__cpu_arch__have_x86_sse42(void) {
+ #if defined(__PCLMUL__) && defined(__POPCNT__) && defined(__SSE4_2__)
+   return true;
+ #else
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64)
+   // GCC defines these macros but MSVC does not.
+   //  - bit_PCLMUL = (1 <<  1)
+   //  - bit_POPCNT = (1 << 23)
+@@ -329,9 +397,9 @@ wuffs_base__cpu_arch__have_x86_sse42(void) {
+     return true;
+   }
+ #else
+-#error "WUFFS_BASE__CPU_ARCH__ETC combined with an unsupported compiler"
++#error "WUFFS_PRIVATE_IMPL__CPU_ARCH__ETC combined with an unsupported compiler"
+ #endif  // defined(__GNUC__); defined(_MSC_VER)
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64)
+   return false;
+ #endif  // defined(__PCLMUL__) && defined(__POPCNT__) && defined(__SSE4_2__)
+ }
+@@ -350,9 +418,15 @@ wuffs_base__cpu_arch__have_x86_sse42(void) {
+ // The "defined(__clang__)" isn't redundant. While vanilla clang defines
+ // __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not.
+ #if defined(__GNUC__) || defined(__clang__)
++#define WUFFS_BASE__FORCE_INLINE __attribute__((__always_inline__))
+ #define WUFFS_BASE__POTENTIALLY_UNUSED __attribute__((unused))
+ #define WUFFS_BASE__WARN_UNUSED_RESULT __attribute__((warn_unused_result))
++#elif defined(_MSC_VER)
++#define WUFFS_BASE__FORCE_INLINE __forceinline
++#define WUFFS_BASE__POTENTIALLY_UNUSED
++#define WUFFS_BASE__WARN_UNUSED_RESULT
+ #else
++#define WUFFS_BASE__FORCE_INLINE
+ #define WUFFS_BASE__POTENTIALLY_UNUSED
+ #define WUFFS_BASE__WARN_UNUSED_RESULT
+ #endif
+@@ -415,6 +489,37 @@ struct wuffs_unique_ptr_deleter {
+ 
+ // --------
+ 
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wcast-qual"
++#endif
++
++static inline uint8_t*  //
++wuffs_base__strip_const_from_u8_ptr(const uint8_t* ptr) {
++  return (uint8_t*)ptr;
++}
++
++static inline uint16_t*  //
++wuffs_base__strip_const_from_u16_ptr(const uint16_t* ptr) {
++  return (uint16_t*)ptr;
++}
++
++static inline uint32_t*  //
++wuffs_base__strip_const_from_u32_ptr(const uint32_t* ptr) {
++  return (uint32_t*)ptr;
++}
++
++static inline uint64_t*  //
++wuffs_base__strip_const_from_u64_ptr(const uint64_t* ptr) {
++  return (uint64_t*)ptr;
++}
++
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++
++// --------
++
+ // wuffs_base__empty_struct is used when a Wuffs function returns an empty
+ // struct. In C, if a function f returns void, you can't say "x = f()", but in
+ // Wuffs, if a function g returns empty, you can say "y = g()".
+@@ -483,6 +588,7 @@ extern const char wuffs_base__suspension__even_more_information[];
+ extern const char wuffs_base__suspension__mispositioned_read[];
+ extern const char wuffs_base__suspension__mispositioned_write[];
+ extern const char wuffs_base__suspension__short_read[];
++extern const char wuffs_base__suspension__short_workbuf[];
+ extern const char wuffs_base__suspension__short_write[];
+ extern const char wuffs_base__error__bad_i_o_position[];
+ extern const char wuffs_base__error__bad_argument_length_too_short[];
+@@ -496,9 +602,11 @@ extern const char wuffs_base__error__bad_vtable[];
+ extern const char wuffs_base__error__bad_workbuf_length[];
+ extern const char wuffs_base__error__bad_wuffs_version[];
+ extern const char wuffs_base__error__cannot_return_a_suspension[];
++extern const char wuffs_base__error__disabled_by_wuffs_config_dst_pixel_format_enable_allowlist[];
+ extern const char wuffs_base__error__disabled_by_previous_error[];
+ extern const char wuffs_base__error__initialize_falsely_claimed_already_zeroed[];
+ extern const char wuffs_base__error__initialize_not_called[];
++extern const char wuffs_base__error__insufficient_history[];
+ extern const char wuffs_base__error__interleaved_coroutine_calls[];
+ extern const char wuffs_base__error__no_more_information[];
+ extern const char wuffs_base__error__not_enough_data[];
+@@ -728,6 +836,9 @@ typedef struct wuffs_base__transform__output__struct {
+ // Lempel–Ziv 4.
+ #define WUFFS_BASE__FOURCC__LZ4 0x4C5A3420
+ 
++// Lzip.
++#define WUFFS_BASE__FOURCC__LZIP 0x4C5A4950
++
+ // Lempel–Ziv Markov-chain Algorithm.
+ #define WUFFS_BASE__FOURCC__LZMA 0x4C5A4D41
+ 
+@@ -839,6 +950,8 @@ typedef struct wuffs_base__transform__output__struct {
+ 
+ #define WUFFS_BASE__QUIRK_IGNORE_CHECKSUM 1
+ 
++#define WUFFS_BASE__QUIRK_QUALITY 2
++
+ // --------
+ 
+ // Flicks are a unit of time. One flick (frame-tick) is 1 / 705_600_000 of a
+@@ -1092,6 +1205,96 @@ wuffs_base__multiply_u64(uint64_t x, uint64_t y) {
+ 
+ // --------
+ 
++typedef struct wuffs_base__bitvec256__struct {
++  // elements_u64[0] holds the LSBs (least significant bits) and
++  // elements_u64[3] holds the MSBs (most significant bits).
++  uint64_t elements_u64[4];
++} wuffs_base__bitvec256;
++
++static inline wuffs_base__bitvec256  //
++wuffs_base__make_bitvec256(uint64_t e00,
++                           uint64_t e01,
++                           uint64_t e02,
++                           uint64_t e03) {
++  wuffs_base__bitvec256 res;
++  res.elements_u64[0] = e00;
++  res.elements_u64[1] = e01;
++  res.elements_u64[2] = e02;
++  res.elements_u64[3] = e03;
++  return res;
++}
++
++static inline uint64_t  //
++wuffs_base__bitvec256__get_u64(const wuffs_base__bitvec256* b, uint32_t i) {
++  return b->elements_u64[i & 3];
++}
++
++// --------
++
++// wuffs_base__optional_u63 is like a std::optional<uint64_t>, but for C (not
++// just C++) and the value can only hold 63 bits (not 64).
++//
++// Do not manipulate repr directly; it is a private implementation detail.
++typedef struct wuffs_base__optional_u63__struct {
++  uint64_t repr;
++
++#ifdef __cplusplus
++  inline bool has_value() const;
++  inline uint64_t value() const;
++  inline uint64_t value_or(uint64_t default_value) const;
++#endif  // __cplusplus
++
++} wuffs_base__optional_u63;
++
++// wuffs_base__make_optional_u63 ignores value when has_value is false.
++//
++// Preconditions:
++//  - value < (1 << 63).
++static inline wuffs_base__optional_u63  //
++wuffs_base__make_optional_u63(bool has_value, uint64_t value) {
++  wuffs_base__optional_u63 res;
++  res.repr = has_value ? ((value << 1u) | 1u) : 0u;
++  return res;
++}
++
++static inline bool  //
++wuffs_base__optional_u63__has_value(const wuffs_base__optional_u63* o) {
++  return o->repr;
++}
++
++// wuffs_base__optional_u63__value returns zero when o does not have a value.
++static inline uint64_t  //
++wuffs_base__optional_u63__value(const wuffs_base__optional_u63* o) {
++  return o->repr >> 1u;
++}
++
++static inline uint64_t  //
++wuffs_base__optional_u63__value_or(const wuffs_base__optional_u63* o,
++                                   uint64_t default_value) {
++  return o->repr ? (o->repr >> 1u) : default_value;
++}
++
++#ifdef __cplusplus
++
++inline bool  //
++wuffs_base__optional_u63::has_value() const {
++  return wuffs_base__optional_u63__has_value(this);
++}
++
++inline uint64_t  //
++wuffs_base__optional_u63::value() const {
++  return wuffs_base__optional_u63__value(this);
++}
++
++inline uint64_t  //
++wuffs_base__optional_u63::value_or(uint64_t default_value) const {
++  return wuffs_base__optional_u63__value_or(this, default_value);
++}
++
++#endif  // __cplusplus
++
++// --------
++
+ // The "defined(__clang__)" isn't redundant. While vanilla clang defines
+ // __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not.
+ #if (defined(__GNUC__) || defined(__clang__)) && (__SIZEOF_LONG__ == 8)
+@@ -1529,7 +1732,7 @@ wuffs_base__make_slice_u64(uint64_t* ptr, size_t len) {
+ static inline wuffs_base__slice_u8  //
+ wuffs_base__make_slice_u8_ij(uint8_t* ptr, size_t i, size_t j) {
+   wuffs_base__slice_u8 ret;
+-  ret.ptr = ptr + i;
++  ret.ptr = ptr ? (ptr + i) : NULL;
+   ret.len = (j >= i) ? (j - i) : 0;
+   return ret;
+ }
+@@ -1537,7 +1740,7 @@ wuffs_base__make_slice_u8_ij(uint8_t* ptr, size_t i, size_t j) {
+ static inline wuffs_base__slice_u16  //
+ wuffs_base__make_slice_u16_ij(uint16_t* ptr, size_t i, size_t j) {
+   wuffs_base__slice_u16 ret;
+-  ret.ptr = ptr + i;
++  ret.ptr = ptr ? (ptr + i) : NULL;
+   ret.len = (j >= i) ? (j - i) : 0;
+   return ret;
+ }
+@@ -1545,7 +1748,7 @@ wuffs_base__make_slice_u16_ij(uint16_t* ptr, size_t i, size_t j) {
+ static inline wuffs_base__slice_u32  //
+ wuffs_base__make_slice_u32_ij(uint32_t* ptr, size_t i, size_t j) {
+   wuffs_base__slice_u32 ret;
+-  ret.ptr = ptr + i;
++  ret.ptr = ptr ? (ptr + i) : NULL;
+   ret.len = (j >= i) ? (j - i) : 0;
+   return ret;
+ }
+@@ -1553,7 +1756,7 @@ wuffs_base__make_slice_u32_ij(uint32_t* ptr, size_t i, size_t j) {
+ static inline wuffs_base__slice_u64  //
+ wuffs_base__make_slice_u64_ij(uint64_t* ptr, size_t i, size_t j) {
+   wuffs_base__slice_u64 ret;
+-  ret.ptr = ptr + i;
++  ret.ptr = ptr ? (ptr + i) : NULL;
+   ret.len = (j >= i) ? (j - i) : 0;
+   return ret;
+ }
+@@ -1696,7 +1899,7 @@ wuffs_base__slice_u8__subslice_i(wuffs_base__slice_u8 s, uint64_t i) {
+   if ((i <= SIZE_MAX) && (i <= s.len)) {
+     return wuffs_base__make_slice_u8(s.ptr + i, ((size_t)(s.len - i)));
+   }
+-  return wuffs_base__make_slice_u8(NULL, 0);
++  return wuffs_base__empty_slice_u8();
+ }
+ 
+ // wuffs_base__slice_u8__subslice_j returns s[:j].
+@@ -1707,7 +1910,7 @@ wuffs_base__slice_u8__subslice_j(wuffs_base__slice_u8 s, uint64_t j) {
+   if ((j <= SIZE_MAX) && (j <= s.len)) {
+     return wuffs_base__make_slice_u8(s.ptr, ((size_t)j));
+   }
+-  return wuffs_base__make_slice_u8(NULL, 0);
++  return wuffs_base__empty_slice_u8();
+ }
+ 
+ // wuffs_base__slice_u8__subslice_ij returns s[i:j].
+@@ -1720,7 +1923,7 @@ wuffs_base__slice_u8__subslice_ij(wuffs_base__slice_u8 s,
+   if ((i <= j) && (j <= SIZE_MAX) && (j <= s.len)) {
+     return wuffs_base__make_slice_u8(s.ptr + i, ((size_t)(j - i)));
+   }
+-  return wuffs_base__make_slice_u8(NULL, 0);
++  return wuffs_base__empty_slice_u8();
+ }
+ 
+ // wuffs_base__table_u8__subtable_ij returns t[ix:jx, iy:jy].
+@@ -1814,6 +2017,20 @@ WUFFS_BASE__MAYBE_STATIC int32_t  //
+ wuffs_base__magic_number_guess_fourcc(wuffs_base__slice_u8 prefix_data,
+                                       bool prefix_closed);
+ 
++// ---------------- Quirk Values
++
++// These constants are the value half of a key-value pair, where the key is
++// WUFFS_BASE__QUIRK_QUALITY.
++//
++// In the Wuffs API, set_quirk takes a u64 value. These macro definitions are
++// likewise unsigned values (uint64_t) but for this particular key, they are
++// best interpreted as signed values (int64_t). "Lower-than-default quality"
++// and "higher-than-default quality", as signed values, are -1 and +1.
++//
++// See doc/note/quirks.md for some more discussion about trade-offs.
++#define WUFFS_BASE__QUIRK_QUALITY__VALUE__LOWER_QUALITY UINT64_MAX
++#define WUFFS_BASE__QUIRK_QUALITY__VALUE__HIGHER_QUALITY ((uint64_t)1)
++
+ // ---------------- Ranges and Rects
+ 
+ // See https://github.com/google/wuffs/blob/main/doc/note/ranges-and-rects.md
+@@ -3011,7 +3228,8 @@ wuffs_base__io_buffer__compact(wuffs_base__io_buffer* buf) {
+ // wuffs_base__io_buffer__compact_retaining moves any written but unread bytes
+ // closer to the start of the buffer. It retains H bytes of history (the most
+ // recently read bytes), where H is min(buf->meta.ri, history_retain_length).
+-// A postcondition is that buf->meta.ri == H.
++// It is therefore a no-op if history_retain_length is UINT64_MAX. A
++// postcondition is that buf->meta.ri == H.
+ //
+ // wuffs_base__io_buffer__compact_retaining(0) is equivalent to
+ // wuffs_base__io_buffer__compact().
+@@ -3056,7 +3274,7 @@ wuffs_base__io_buffer__reader_length(const wuffs_base__io_buffer* buf) {
+ 
+ static inline uint8_t*  //
+ wuffs_base__io_buffer__reader_pointer(const wuffs_base__io_buffer* buf) {
+-  return buf ? (buf->data.ptr + buf->meta.ri) : NULL;
++  return (buf && buf->data.ptr) ? (buf->data.ptr + buf->meta.ri) : NULL;
+ }
+ 
+ static inline uint64_t  //
+@@ -3066,7 +3284,8 @@ wuffs_base__io_buffer__reader_position(const wuffs_base__io_buffer* buf) {
+ 
+ static inline wuffs_base__slice_u8  //
+ wuffs_base__io_buffer__reader_slice(const wuffs_base__io_buffer* buf) {
+-  return buf ? wuffs_base__make_slice_u8(buf->data.ptr + buf->meta.ri,
++  return (buf && buf->data.ptr)
++             ? wuffs_base__make_slice_u8(buf->data.ptr + buf->meta.ri,
+                                          buf->meta.wi - buf->meta.ri)
+              : wuffs_base__empty_slice_u8();
+ }
+@@ -3078,7 +3297,7 @@ wuffs_base__io_buffer__writer_length(const wuffs_base__io_buffer* buf) {
+ 
+ static inline uint8_t*  //
+ wuffs_base__io_buffer__writer_pointer(const wuffs_base__io_buffer* buf) {
+-  return buf ? (buf->data.ptr + buf->meta.wi) : NULL;
++  return (buf && buf->data.ptr) ? (buf->data.ptr + buf->meta.wi) : NULL;
+ }
+ 
+ static inline uint64_t  //
+@@ -3088,7 +3307,8 @@ wuffs_base__io_buffer__writer_position(const wuffs_base__io_buffer* buf) {
+ 
+ static inline wuffs_base__slice_u8  //
+ wuffs_base__io_buffer__writer_slice(const wuffs_base__io_buffer* buf) {
+-  return buf ? wuffs_base__make_slice_u8(buf->data.ptr + buf->meta.wi,
++  return (buf && buf->data.ptr)
++             ? wuffs_base__make_slice_u8(buf->data.ptr + buf->meta.wi,
+                                          buf->data.len - buf->meta.wi)
+              : wuffs_base__empty_slice_u8();
+ }
+@@ -3183,49 +3403,53 @@ wuffs_base__make_token(uint64_t repr) {
+ 
+ // --------
+ 
++// clang-format off
++
++// --------
++
+ #define WUFFS_BASE__TOKEN__LENGTH__MAX_INCL 0xFFFF
+ 
+-#define WUFFS_BASE__TOKEN__VALUE__SHIFT 17
+-#define WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT 17
+-#define WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT 42
+-#define WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT 17
++#define WUFFS_BASE__TOKEN__VALUE__SHIFT               17
++#define WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT     17
++#define WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT         42
++#define WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT         17
+ #define WUFFS_BASE__TOKEN__VALUE_BASE_CATEGORY__SHIFT 38
+-#define WUFFS_BASE__TOKEN__VALUE_BASE_DETAIL__SHIFT 17
+-#define WUFFS_BASE__TOKEN__CONTINUED__SHIFT 16
+-#define WUFFS_BASE__TOKEN__LENGTH__SHIFT 0
++#define WUFFS_BASE__TOKEN__VALUE_BASE_DETAIL__SHIFT   17
++#define WUFFS_BASE__TOKEN__CONTINUED__SHIFT           16
++#define WUFFS_BASE__TOKEN__LENGTH__SHIFT               0
+ 
+-#define WUFFS_BASE__TOKEN__VALUE_EXTENSION__NUM_BITS 46
++#define WUFFS_BASE__TOKEN__VALUE_EXTENSION__NUM_BITS  46
+ 
+ // --------
+ 
+-#define WUFFS_BASE__TOKEN__VBC__FILLER 0
+-#define WUFFS_BASE__TOKEN__VBC__STRUCTURE 1
+-#define WUFFS_BASE__TOKEN__VBC__STRING 2
+-#define WUFFS_BASE__TOKEN__VBC__UNICODE_CODE_POINT 3
+-#define WUFFS_BASE__TOKEN__VBC__LITERAL 4
+-#define WUFFS_BASE__TOKEN__VBC__NUMBER 5
+-#define WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_SIGNED 6
++#define WUFFS_BASE__TOKEN__VBC__FILLER                  0
++#define WUFFS_BASE__TOKEN__VBC__STRUCTURE               1
++#define WUFFS_BASE__TOKEN__VBC__STRING                  2
++#define WUFFS_BASE__TOKEN__VBC__UNICODE_CODE_POINT      3
++#define WUFFS_BASE__TOKEN__VBC__LITERAL                 4
++#define WUFFS_BASE__TOKEN__VBC__NUMBER                  5
++#define WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_SIGNED   6
+ #define WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_UNSIGNED 7
+ 
+ // --------
+ 
+-#define WUFFS_BASE__TOKEN__VBD__FILLER__PUNCTUATION 0x00001
++#define WUFFS_BASE__TOKEN__VBD__FILLER__PUNCTUATION   0x00001
+ #define WUFFS_BASE__TOKEN__VBD__FILLER__COMMENT_BLOCK 0x00002
+-#define WUFFS_BASE__TOKEN__VBD__FILLER__COMMENT_LINE 0x00004
++#define WUFFS_BASE__TOKEN__VBD__FILLER__COMMENT_LINE  0x00004
+ 
+ // COMMENT_ANY is a bit-wise or of COMMENT_BLOCK AND COMMENT_LINE.
+-#define WUFFS_BASE__TOKEN__VBD__FILLER__COMMENT_ANY 0x00006
++#define WUFFS_BASE__TOKEN__VBD__FILLER__COMMENT_ANY   0x00006
+ 
+ // --------
+ 
+-#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH 0x00001
+-#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__POP 0x00002
++#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH      0x00001
++#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__POP       0x00002
+ #define WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_NONE 0x00010
+ #define WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_LIST 0x00020
+ #define WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_DICT 0x00040
+-#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE 0x01000
+-#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST 0x02000
+-#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT 0x04000
++#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE   0x01000
++#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST   0x02000
++#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT   0x04000
+ 
+ // --------
+ 
+@@ -3245,11 +3469,11 @@ wuffs_base__make_token(uint64_t repr) {
+ //
+ // The lack of any particular bit is conservative: it is valid for all-ASCII
+ // strings, in a single- or multi-token chain, to have none of these bits set.
+-#define WUFFS_BASE__TOKEN__VBD__STRING__DEFINITELY_UTF_8 0x00001
+-#define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_MUST_BE_UTF_8 0x00002
++#define WUFFS_BASE__TOKEN__VBD__STRING__DEFINITELY_UTF_8      0x00001
++#define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_MUST_BE_UTF_8   0x00002
+ #define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_SHOULD_BE_UTF_8 0x00004
+-#define WUFFS_BASE__TOKEN__VBD__STRING__DEFINITELY_ASCII 0x00010
+-#define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_MUST_BE_ASCII 0x00020
++#define WUFFS_BASE__TOKEN__VBD__STRING__DEFINITELY_ASCII      0x00010
++#define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_MUST_BE_ASCII   0x00020
+ #define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_SHOULD_BE_ASCII 0x00040
+ 
+ // CONVERT_D_DST_S_SRC means that multiples of S source bytes (possibly padded)
+@@ -3264,22 +3488,22 @@ wuffs_base__make_token(uint64_t repr) {
+ // When src is the empty string, multiple conversion algorithms are applicable
+ // (so these bits are not necessarily mutually exclusive), all producing the
+ // same empty dst string.
+-#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_0_DST_1_SRC_DROP 0x00100
+-#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_1_SRC_COPY 0x00200
++#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_0_DST_1_SRC_DROP        0x00100
++#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_1_SRC_COPY        0x00200
+ #define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_2_SRC_HEXADECIMAL 0x00400
+ #define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_4_SRC_BACKSLASH_X 0x00800
+ #define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_3_DST_4_SRC_BASE_64_STD 0x01000
+ #define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_3_DST_4_SRC_BASE_64_URL 0x02000
+-#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_4_DST_5_SRC_ASCII_85 0x04000
++#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_4_DST_5_SRC_ASCII_85    0x04000
+ #define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_5_DST_8_SRC_BASE_32_HEX 0x08000
+ #define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_5_DST_8_SRC_BASE_32_STD 0x10000
+ 
+ // --------
+ 
+ #define WUFFS_BASE__TOKEN__VBD__LITERAL__UNDEFINED 0x00001
+-#define WUFFS_BASE__TOKEN__VBD__LITERAL__NULL 0x00002
+-#define WUFFS_BASE__TOKEN__VBD__LITERAL__FALSE 0x00004
+-#define WUFFS_BASE__TOKEN__VBD__LITERAL__TRUE 0x00008
++#define WUFFS_BASE__TOKEN__VBD__LITERAL__NULL      0x00002
++#define WUFFS_BASE__TOKEN__VBD__LITERAL__FALSE     0x00004
++#define WUFFS_BASE__TOKEN__VBD__LITERAL__TRUE      0x00008
+ 
+ // --------
+ 
+@@ -3292,8 +3516,8 @@ wuffs_base__make_token(uint64_t repr) {
+ // For a source string of "+123" or "-0x9A", only the first two are valid.
+ //
+ // For a source string of "123.", only the first one is valid.
+-#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_FLOATING_POINT 0x00001
+-#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_SIGNED 0x00002
++#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_FLOATING_POINT   0x00001
++#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_SIGNED   0x00002
+ #define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_UNSIGNED 0x00004
+ 
+ #define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_NEG_INF 0x00010
+@@ -3305,11 +3529,15 @@ wuffs_base__make_token(uint64_t repr) {
+ // "300", which are big-endian, little-endian or text. For binary formats, the
+ // token length (after adjusting for FORMAT_IGNORE_ETC) discriminates
+ // e.g. u16 little-endian vs u32 little-endian.
+-#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_BINARY_BIG_ENDIAN 0x00100
++#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_BINARY_BIG_ENDIAN    0x00100
+ #define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_BINARY_LITTLE_ENDIAN 0x00200
+-#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_TEXT 0x00400
++#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_TEXT                 0x00400
++
++#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_IGNORE_FIRST_BYTE    0x01000
++
++// --------
+ 
+-#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_IGNORE_FIRST_BYTE 0x01000
++// clang-format on
+ 
+ // --------
+ 
+@@ -3421,6 +3649,22 @@ wuffs_base__token::length() const {
+ 
+ // --------
+ 
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wcast-qual"
++#endif
++
++static inline wuffs_base__token*  //
++wuffs_base__strip_const_from_token_ptr(const wuffs_base__token* ptr) {
++  return (wuffs_base__token*)ptr;
++}
++
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++
++// --------
++
+ typedef WUFFS_BASE__SLICE(wuffs_base__token) wuffs_base__slice_token;
+ 
+ static inline wuffs_base__slice_token  //
+@@ -3574,7 +3818,8 @@ wuffs_base__token_buffer__compact(wuffs_base__token_buffer* buf) {
+ // wuffs_base__token_buffer__compact_retaining moves any written but unread
+ // tokens closer to the start of the buffer. It retains H tokens of history
+ // (the most recently read tokens), where H is min(buf->meta.ri,
+-// history_retain_length). A postcondition is that buf->meta.ri == H.
++// history_retain_length). It is therefore a no-op if history_retain_length is
++// UINT64_MAX. A postcondition is that buf->meta.ri == H.
+ //
+ // wuffs_base__token_buffer__compact_retaining(0) is equivalent to
+ // wuffs_base__token_buffer__compact().
+@@ -3730,51 +3975,51 @@ wuffs_base__token_buffer::writer_token_position() const {
+ //
+ // You can pass the C stdlib's malloc as the malloc_func.
+ //
+-// It returns an empty slice (containing a NULL ptr field) if (num_uxx *
+-// sizeof(uintxx_t)) would overflow SIZE_MAX.
++// It returns an empty slice (containing a NULL ptr field) if num_uxx is zero
++// or if (num_uxx * sizeof(uintxx_t)) would overflow SIZE_MAX.
+ 
+ static inline wuffs_base__slice_u8  //
+ wuffs_base__malloc_slice_u8(void* (*malloc_func)(size_t), uint64_t num_u8) {
+-  if (malloc_func && (num_u8 <= (SIZE_MAX / sizeof(uint8_t)))) {
++  if (malloc_func && num_u8 && (num_u8 <= (SIZE_MAX / sizeof(uint8_t)))) {
+     void* p = (*malloc_func)((size_t)(num_u8 * sizeof(uint8_t)));
+     if (p) {
+       return wuffs_base__make_slice_u8((uint8_t*)(p), (size_t)num_u8);
+     }
+   }
+-  return wuffs_base__make_slice_u8(NULL, 0);
++  return wuffs_base__empty_slice_u8();
+ }
+ 
+ static inline wuffs_base__slice_u16  //
+ wuffs_base__malloc_slice_u16(void* (*malloc_func)(size_t), uint64_t num_u16) {
+-  if (malloc_func && (num_u16 <= (SIZE_MAX / sizeof(uint16_t)))) {
++  if (malloc_func && num_u16 && (num_u16 <= (SIZE_MAX / sizeof(uint16_t)))) {
+     void* p = (*malloc_func)((size_t)(num_u16 * sizeof(uint16_t)));
+     if (p) {
+       return wuffs_base__make_slice_u16((uint16_t*)(p), (size_t)num_u16);
+     }
+   }
+-  return wuffs_base__make_slice_u16(NULL, 0);
++  return wuffs_base__empty_slice_u16();
+ }
+ 
+ static inline wuffs_base__slice_u32  //
+ wuffs_base__malloc_slice_u32(void* (*malloc_func)(size_t), uint64_t num_u32) {
+-  if (malloc_func && (num_u32 <= (SIZE_MAX / sizeof(uint32_t)))) {
++  if (malloc_func && num_u32 && (num_u32 <= (SIZE_MAX / sizeof(uint32_t)))) {
+     void* p = (*malloc_func)((size_t)(num_u32 * sizeof(uint32_t)));
+     if (p) {
+       return wuffs_base__make_slice_u32((uint32_t*)(p), (size_t)num_u32);
+     }
+   }
+-  return wuffs_base__make_slice_u32(NULL, 0);
++  return wuffs_base__empty_slice_u32();
+ }
+ 
+ static inline wuffs_base__slice_u64  //
+ wuffs_base__malloc_slice_u64(void* (*malloc_func)(size_t), uint64_t num_u64) {
+-  if (malloc_func && (num_u64 <= (SIZE_MAX / sizeof(uint64_t)))) {
++  if (malloc_func && num_u64 && (num_u64 <= (SIZE_MAX / sizeof(uint64_t)))) {
+     void* p = (*malloc_func)((size_t)(num_u64 * sizeof(uint64_t)));
+     if (p) {
+       return wuffs_base__make_slice_u64((uint64_t*)(p), (size_t)num_u64);
+     }
+   }
+-  return wuffs_base__make_slice_u64(NULL, 0);
++  return wuffs_base__empty_slice_u64();
+ }
+ 
+ // ---------------- Images
+@@ -3838,6 +4083,26 @@ wuffs_base__color_u32_argb_premul__as__color_u8_gray(
+   return (uint8_t)(weighted_average >> 24);
+ }
+ 
++static inline uint16_t  //
++wuffs_base__color_u32_argb_premul__as__color_u16_alpha_gray_nonpremul(
++    wuffs_base__color_u32_argb_premul c) {
++  uint32_t a = 0xFF & (c >> 24);
++  if (a == 0) {
++    return 0;
++  }
++  uint32_t a16 = a * 0x101;
++
++  uint32_t cr = 0xFF & (c >> 16);
++  cr = (cr * (0x101 * 0xFFFF)) / a16;
++  uint32_t cg = 0xFF & (c >> 8);
++  cg = (cg * (0x101 * 0xFFFF)) / a16;
++  uint32_t cb = 0xFF & (c >> 0);
++  cb = (cb * (0x101 * 0xFFFF)) / a16;
++
++  uint32_t weighted_average = (19595 * cr) + (38470 * cg) + (7471 * cb) + 32768;
++  return (uint16_t)((a16 & 0xFF00) | (weighted_average >> 24));
++}
++
+ static inline uint16_t  //
+ wuffs_base__color_u32_argb_premul__as__color_u16_gray(
+     wuffs_base__color_u32_argb_premul c) {
+@@ -4114,49 +4379,53 @@ wuffs_base__make_pixel_format(uint32_t repr) {
+ // Common 8-bit-depth pixel formats. This list is not exhaustive; not all valid
+ // wuffs_base__pixel_format values are present.
+ 
+-#define WUFFS_BASE__PIXEL_FORMAT__INVALID 0x00000000
++// clang-format off
++
++#define WUFFS_BASE__PIXEL_FORMAT__INVALID                   0x00000000
+ 
+-#define WUFFS_BASE__PIXEL_FORMAT__A 0x02000008
++#define WUFFS_BASE__PIXEL_FORMAT__A                         0x02000008
+ 
+-#define WUFFS_BASE__PIXEL_FORMAT__Y 0x20000008
+-#define WUFFS_BASE__PIXEL_FORMAT__Y_16LE 0x2000000B
+-#define WUFFS_BASE__PIXEL_FORMAT__Y_16BE 0x2010000B
+-#define WUFFS_BASE__PIXEL_FORMAT__YA_NONPREMUL 0x21000008
+-#define WUFFS_BASE__PIXEL_FORMAT__YA_PREMUL 0x22000008
++#define WUFFS_BASE__PIXEL_FORMAT__Y                         0x20000008
++#define WUFFS_BASE__PIXEL_FORMAT__Y_16LE                    0x2000000B
++#define WUFFS_BASE__PIXEL_FORMAT__Y_16BE                    0x2010000B
++#define WUFFS_BASE__PIXEL_FORMAT__YA_NONPREMUL              0x21000088
++#define WUFFS_BASE__PIXEL_FORMAT__YA_PREMUL                 0x22000088
+ 
+-#define WUFFS_BASE__PIXEL_FORMAT__YCBCR 0x40020888
+-#define WUFFS_BASE__PIXEL_FORMAT__YCBCRA_NONPREMUL 0x41038888
+-#define WUFFS_BASE__PIXEL_FORMAT__YCBCRK 0x50038888
++#define WUFFS_BASE__PIXEL_FORMAT__YCBCR                     0x40020888
++#define WUFFS_BASE__PIXEL_FORMAT__YCBCRA_NONPREMUL          0x41038888
++#define WUFFS_BASE__PIXEL_FORMAT__YCBCRK                    0x50038888
+ 
+-#define WUFFS_BASE__PIXEL_FORMAT__YCOCG 0x60020888
+-#define WUFFS_BASE__PIXEL_FORMAT__YCOCGA_NONPREMUL 0x61038888
+-#define WUFFS_BASE__PIXEL_FORMAT__YCOCGK 0x70038888
++#define WUFFS_BASE__PIXEL_FORMAT__YCOCG                     0x60020888
++#define WUFFS_BASE__PIXEL_FORMAT__YCOCGA_NONPREMUL          0x61038888
++#define WUFFS_BASE__PIXEL_FORMAT__YCOCGK                    0x70038888
+ 
+-#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL 0x81040008
+-#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL 0x82040008
+-#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY 0x83040008
++#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL   0x81040008
++#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL      0x82040008
++#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY      0x83040008
+ 
+-#define WUFFS_BASE__PIXEL_FORMAT__BGR_565 0x80000565
+-#define WUFFS_BASE__PIXEL_FORMAT__BGR 0x80000888
+-#define WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL 0x81008888
+-#define WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE 0x8100BBBB
+-#define WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL 0x82008888
+-#define WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE 0x8200BBBB
+-#define WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY 0x83008888
+-#define WUFFS_BASE__PIXEL_FORMAT__BGRX 0x90008888
++#define WUFFS_BASE__PIXEL_FORMAT__BGR_565                   0x80000565
++#define WUFFS_BASE__PIXEL_FORMAT__BGR                       0x80000888
++#define WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL            0x81008888
++#define WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE     0x8100BBBB
++#define WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL               0x82008888
++#define WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE        0x8200BBBB
++#define WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY               0x83008888
++#define WUFFS_BASE__PIXEL_FORMAT__BGRX                      0x90008888
+ 
+-#define WUFFS_BASE__PIXEL_FORMAT__RGB 0xA0000888
+-#define WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL 0xA1008888
+-#define WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE 0xA100BBBB
+-#define WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL 0xA2008888
+-#define WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE 0xA200BBBB
+-#define WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY 0xA3008888
+-#define WUFFS_BASE__PIXEL_FORMAT__RGBX 0xB0008888
++#define WUFFS_BASE__PIXEL_FORMAT__RGB                       0xA0000888
++#define WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL            0xA1008888
++#define WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE     0xA100BBBB
++#define WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL               0xA2008888
++#define WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE        0xA200BBBB
++#define WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY               0xA3008888
++#define WUFFS_BASE__PIXEL_FORMAT__RGBX                      0xB0008888
+ 
+-#define WUFFS_BASE__PIXEL_FORMAT__CMY 0xC0020888
+-#define WUFFS_BASE__PIXEL_FORMAT__CMYK 0xD0038888
++#define WUFFS_BASE__PIXEL_FORMAT__CMY                       0xC0020888
++#define WUFFS_BASE__PIXEL_FORMAT__CMYK                      0xD0038888
+ 
+-extern const uint32_t wuffs_base__pixel_format__bits_per_channel[16];
++// clang-format on
++
++extern const uint32_t wuffs_private_impl__pixel_format__bits_per_channel[16];
+ 
+ static inline bool  //
+ wuffs_base__pixel_format__is_valid(const wuffs_base__pixel_format* f) {
+@@ -4170,10 +4439,14 @@ wuffs_base__pixel_format__bits_per_pixel(const wuffs_base__pixel_format* f) {
+   if (((f->repr >> 16) & 0x03) != 0) {
+     return 0;
+   }
+-  return wuffs_base__pixel_format__bits_per_channel[0x0F & (f->repr >> 0)] +
+-         wuffs_base__pixel_format__bits_per_channel[0x0F & (f->repr >> 4)] +
+-         wuffs_base__pixel_format__bits_per_channel[0x0F & (f->repr >> 8)] +
+-         wuffs_base__pixel_format__bits_per_channel[0x0F & (f->repr >> 12)];
++  return wuffs_private_impl__pixel_format__bits_per_channel[0x0F &
++                                                            (f->repr >> 0)] +
++         wuffs_private_impl__pixel_format__bits_per_channel[0x0F &
++                                                            (f->repr >> 4)] +
++         wuffs_private_impl__pixel_format__bits_per_channel[0x0F &
++                                                            (f->repr >> 8)] +
++         wuffs_private_impl__pixel_format__bits_per_channel[0x0F &
++                                                            (f->repr >> 12)];
+ }
+ 
+ static inline bool  //
+@@ -4391,15 +4664,20 @@ wuffs_base__pixel_config__set(wuffs_base__pixel_config* c,
+     return;
+   }
+   if (pixfmt_repr) {
+-    uint64_t wh = ((uint64_t)width) * ((uint64_t)height);
+-    // TODO: handle things other than 1 byte per pixel.
+-    if (wh <= ((uint64_t)SIZE_MAX)) {
++    do {
++#if SIZE_MAX < 0xFFFFFFFFFFFFFFFFull
++      uint64_t wh = ((uint64_t)width) * ((uint64_t)height);
++      // TODO: handle things other than 1 byte per pixel.
++      if (wh > ((uint64_t)SIZE_MAX)) {
++        break;
++      }
++#endif
+       c->private_impl.pixfmt.repr = pixfmt_repr;
+       c->private_impl.pixsub.repr = pixsub_repr;
+       c->private_impl.width = width;
+       c->private_impl.height = height;
+       return;
+-    }
++    } while (0);
+   }
+ 
+   c->private_impl.pixfmt.repr = 0;
+@@ -5117,7 +5395,7 @@ wuffs_base__pixel_buffer__palette(wuffs_base__pixel_buffer* pb) {
+           tab->ptr, WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH);
+     }
+   }
+-  return wuffs_base__make_slice_u8(NULL, 0);
++  return wuffs_base__empty_slice_u8();
+ }
+ 
+ static inline wuffs_base__slice_u8  //
+@@ -6202,6 +6480,113 @@ struct wuffs_base__hasher_u64__struct {
+ 
+ // --------
+ 
++extern const char wuffs_base__hasher_bitvec256__vtable_name[];
++
++typedef struct wuffs_base__hasher_bitvec256__func_ptrs__struct {
++  wuffs_base__bitvec256 (*checksum_bitvec256)(
++    const void* self);
++  uint64_t (*get_quirk)(
++    const void* self,
++    uint32_t a_key);
++  wuffs_base__status (*set_quirk)(
++    void* self,
++    uint32_t a_key,
++    uint64_t a_value);
++  wuffs_base__empty_struct (*update)(
++    void* self,
++    wuffs_base__slice_u8 a_x);
++  wuffs_base__bitvec256 (*update_bitvec256)(
++    void* self,
++    wuffs_base__slice_u8 a_x);
++} wuffs_base__hasher_bitvec256__func_ptrs;
++
++typedef struct wuffs_base__hasher_bitvec256__struct wuffs_base__hasher_bitvec256;
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__bitvec256
++wuffs_base__hasher_bitvec256__checksum_bitvec256(
++    const wuffs_base__hasher_bitvec256* self);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_base__hasher_bitvec256__get_quirk(
++    const wuffs_base__hasher_bitvec256* self,
++    uint32_t a_key);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_base__hasher_bitvec256__set_quirk(
++    wuffs_base__hasher_bitvec256* self,
++    uint32_t a_key,
++    uint64_t a_value);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_base__hasher_bitvec256__update(
++    wuffs_base__hasher_bitvec256* self,
++    wuffs_base__slice_u8 a_x);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__bitvec256
++wuffs_base__hasher_bitvec256__update_bitvec256(
++    wuffs_base__hasher_bitvec256* self,
++    wuffs_base__slice_u8 a_x);
++
++#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
++
++struct wuffs_base__hasher_bitvec256__struct {
++  struct {
++    uint32_t magic;
++    uint32_t active_coroutine;
++    wuffs_base__vtable first_vtable;
++  } private_impl;
++
++#ifdef __cplusplus
++#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
++  using unique_ptr = std::unique_ptr<wuffs_base__hasher_bitvec256, wuffs_unique_ptr_deleter>;
++#endif
++
++  inline wuffs_base__bitvec256
++  checksum_bitvec256() const {
++    return wuffs_base__hasher_bitvec256__checksum_bitvec256(this);
++  }
++
++  inline uint64_t
++  get_quirk(
++      uint32_t a_key) const {
++    return wuffs_base__hasher_bitvec256__get_quirk(
++        this, a_key);
++  }
++
++  inline wuffs_base__status
++  set_quirk(
++      uint32_t a_key,
++      uint64_t a_value) {
++    return wuffs_base__hasher_bitvec256__set_quirk(
++        this, a_key, a_value);
++  }
++
++  inline wuffs_base__empty_struct
++  update(
++      wuffs_base__slice_u8 a_x) {
++    return wuffs_base__hasher_bitvec256__update(
++        this, a_x);
++  }
++
++  inline wuffs_base__bitvec256
++  update_bitvec256(
++      wuffs_base__slice_u8 a_x) {
++    return wuffs_base__hasher_bitvec256__update_bitvec256(
++        this, a_x);
++  }
++
++#endif  // __cplusplus
++};  // struct wuffs_base__hasher_bitvec256__struct
++
++#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
++
++// --------
++
+ extern const char wuffs_base__image_decoder__vtable_name[];
+ 
+ typedef struct wuffs_base__image_decoder__func_ptrs__struct {
+@@ -6225,8 +6610,6 @@ typedef struct wuffs_base__image_decoder__func_ptrs__struct {
+   uint64_t (*get_quirk)(
+     const void* self,
+     uint32_t a_key);
+-  uint64_t (*history_retain_length)(
+-    const void* self);
+   uint32_t (*num_animation_loops)(
+     const void* self);
+   uint64_t (*num_decoded_frame_configs)(
+@@ -6291,11 +6674,6 @@ wuffs_base__image_decoder__get_quirk(
+     const wuffs_base__image_decoder* self,
+     uint32_t a_key);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_base__image_decoder__history_retain_length(
+-    const wuffs_base__image_decoder* self);
+-
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint32_t
+ wuffs_base__image_decoder__num_animation_loops(
+@@ -6398,11 +6776,6 @@ struct wuffs_base__image_decoder__struct {
+         this, a_key);
+   }
+ 
+-  inline uint64_t
+-  history_retain_length() const {
+-    return wuffs_base__image_decoder__history_retain_length(this);
+-  }
+-
+   inline uint32_t
+   num_animation_loops() const {
+     return wuffs_base__image_decoder__num_animation_loops(this);
+@@ -6466,11 +6839,11 @@ struct wuffs_base__image_decoder__struct {
+ extern const char wuffs_base__io_transformer__vtable_name[];
+ 
+ typedef struct wuffs_base__io_transformer__func_ptrs__struct {
++  wuffs_base__optional_u63 (*dst_history_retain_length)(
++    const void* self);
+   uint64_t (*get_quirk)(
+     const void* self,
+     uint32_t a_key);
+-  uint64_t (*history_retain_length)(
+-    const void* self);
+   wuffs_base__status (*set_quirk)(
+     void* self,
+     uint32_t a_key,
+@@ -6486,17 +6859,17 @@ typedef struct wuffs_base__io_transformer__func_ptrs__struct {
+ 
+ typedef struct wuffs_base__io_transformer__struct wuffs_base__io_transformer;
+ 
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
++wuffs_base__io_transformer__dst_history_retain_length(
++    const wuffs_base__io_transformer* self);
++
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+ wuffs_base__io_transformer__get_quirk(
+     const wuffs_base__io_transformer* self,
+     uint32_t a_key);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_base__io_transformer__history_retain_length(
+-    const wuffs_base__io_transformer* self);
+-
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+ wuffs_base__io_transformer__set_quirk(
+@@ -6531,6 +6904,11 @@ struct wuffs_base__io_transformer__struct {
+   using unique_ptr = std::unique_ptr<wuffs_base__io_transformer, wuffs_unique_ptr_deleter>;
+ #endif
+ 
++  inline wuffs_base__optional_u63
++  dst_history_retain_length() const {
++    return wuffs_base__io_transformer__dst_history_retain_length(this);
++  }
++
+   inline uint64_t
+   get_quirk(
+       uint32_t a_key) const {
+@@ -6538,11 +6916,6 @@ struct wuffs_base__io_transformer__struct {
+         this, a_key);
+   }
+ 
+-  inline uint64_t
+-  history_retain_length() const {
+-    return wuffs_base__io_transformer__history_retain_length(this);
+-  }
+-
+   inline wuffs_base__status
+   set_quirk(
+       uint32_t a_key,
+@@ -6583,8 +6956,6 @@ typedef struct wuffs_base__token_decoder__func_ptrs__struct {
+   uint64_t (*get_quirk)(
+     const void* self,
+     uint32_t a_key);
+-  uint64_t (*history_retain_length)(
+-    const void* self);
+   wuffs_base__status (*set_quirk)(
+     void* self,
+     uint32_t a_key,
+@@ -6609,11 +6980,6 @@ wuffs_base__token_decoder__get_quirk(
+     const wuffs_base__token_decoder* self,
+     uint32_t a_key);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_base__token_decoder__history_retain_length(
+-    const wuffs_base__token_decoder* self);
+-
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+ wuffs_base__token_decoder__set_quirk(
+@@ -6656,11 +7022,6 @@ struct wuffs_base__token_decoder__struct {
+         this, a_key);
+   }
+ 
+-  inline uint64_t
+-  history_retain_length() const {
+-    return wuffs_base__token_decoder__history_retain_length(this);
+-  }
+-
+   inline wuffs_base__status
+   set_quirk(
+       uint32_t a_key,
+@@ -6918,9 +7279,7 @@ extern const char wuffs_bmp__error__unsupported_bmp_file[];
+ 
+ // ---------------- Public Consts
+ 
+-#define WUFFS_BMP__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
+-
+-#define WUFFS_BMP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
++#define WUFFS_BMP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
+ 
+ // ---------------- Struct Declarations
+ 
+@@ -7053,11 +7412,6 @@ wuffs_bmp__decoder__tell_me_more(
+     wuffs_base__more_information* a_minfo,
+     wuffs_base__io_buffer* a_src);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_bmp__decoder__history_retain_length(
+-    const wuffs_bmp__decoder* self);
+-
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+ wuffs_bmp__decoder__workbuf_len(
+@@ -7116,14 +7470,14 @@ struct wuffs_bmp__decoder__struct {
+     bool f_rle_padded;
+     wuffs_base__pixel_swizzler f_swizzler;
+ 
+-    uint32_t p_decode_image_config[1];
+-    uint32_t p_do_decode_image_config[1];
+-    uint32_t p_decode_frame_config[1];
+-    uint32_t p_do_decode_frame_config[1];
+-    uint32_t p_decode_frame[1];
+-    uint32_t p_do_decode_frame[1];
+-    uint32_t p_tell_me_more[1];
+-    uint32_t p_read_palette[1];
++    uint32_t p_decode_image_config;
++    uint32_t p_do_decode_image_config;
++    uint32_t p_decode_frame_config;
++    uint32_t p_do_decode_frame_config;
++    uint32_t p_decode_frame;
++    uint32_t p_do_decode_frame;
++    uint32_t p_tell_me_more;
++    uint32_t p_read_palette;
+   } private_impl;
+ 
+   struct {
+@@ -7132,14 +7486,14 @@ struct wuffs_bmp__decoder__struct {
+ 
+     struct {
+       uint64_t scratch;
+-    } s_do_decode_image_config[1];
++    } s_do_decode_image_config;
+     struct {
+       uint64_t scratch;
+-    } s_do_decode_frame[1];
++    } s_do_decode_frame;
+     struct {
+       uint32_t v_i;
+       uint64_t scratch;
+-    } s_read_palette[1];
++    } s_read_palette;
+   } private_data;
+ 
+ #ifdef __cplusplus
+@@ -7283,11 +7637,6 @@ struct wuffs_bmp__decoder__struct {
+     return wuffs_bmp__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
+   }
+ 
+-  inline uint64_t
+-  history_retain_length() const {
+-    return wuffs_bmp__decoder__history_retain_length(this);
+-  }
+-
+   inline wuffs_base__range_ii_u64
+   workbuf_len() const {
+     return wuffs_bmp__decoder__workbuf_len(this);
+@@ -7316,9 +7665,9 @@ extern const char wuffs_bzip2__error__unsupported_block_randomization[];
+ 
+ // ---------------- Public Consts
+ 
+-#define WUFFS_BZIP2__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
++#define WUFFS_BZIP2__DECODER_DST_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0u
+ 
+-#define WUFFS_BZIP2__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
++#define WUFFS_BZIP2__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
+ 
+ // ---------------- Struct Declarations
+ 
+@@ -7386,8 +7735,8 @@ wuffs_bzip2__decoder__set_quirk(
+     uint64_t a_value);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_bzip2__decoder__history_retain_length(
++WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
++wuffs_bzip2__decoder__dst_history_retain_length(
+     const wuffs_bzip2__decoder* self);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+@@ -7452,12 +7801,12 @@ struct wuffs_bzip2__decoder__struct {
+     uint32_t f_num_sections;
+     uint32_t f_code_lengths_bitmask;
+ 
+-    uint32_t p_transform_io[1];
+-    uint32_t p_do_transform_io[1];
+-    uint32_t p_prepare_block[1];
+-    uint32_t p_read_code_lengths[1];
+-    uint32_t p_flush_slow[1];
+-    uint32_t p_decode_huffman_slow[1];
++    uint32_t p_transform_io;
++    uint32_t p_do_transform_io;
++    uint32_t p_prepare_block;
++    uint32_t p_read_code_lengths;
++    uint32_t p_flush_slow;
++    uint32_t p_decode_huffman_slow;
+   } private_impl;
+ 
+   struct {
+@@ -7474,15 +7823,15 @@ struct wuffs_bzip2__decoder__struct {
+       uint32_t v_i;
+       uint64_t v_tag;
+       uint32_t v_final_checksum_want;
+-    } s_do_transform_io[1];
++    } s_do_transform_io;
+     struct {
+       uint32_t v_i;
+       uint32_t v_selector;
+-    } s_prepare_block[1];
++    } s_prepare_block;
+     struct {
+       uint32_t v_i;
+       uint32_t v_code_length;
+-    } s_read_code_lengths[1];
++    } s_read_code_lengths;
+     struct {
+       uint32_t v_flush_pointer;
+       uint32_t v_flush_repeat_count;
+@@ -7491,10 +7840,10 @@ struct wuffs_bzip2__decoder__struct {
+       uint32_t v_block_size;
+       uint8_t v_curr;
+       uint64_t scratch;
+-    } s_flush_slow[1];
++    } s_flush_slow;
+     struct {
+       uint32_t v_node_index;
+-    } s_decode_huffman_slow[1];
++    } s_decode_huffman_slow;
+   } private_data;
+ 
+ #ifdef __cplusplus
+@@ -7572,9 +7921,9 @@ struct wuffs_bzip2__decoder__struct {
+     return wuffs_bzip2__decoder__set_quirk(this, a_key, a_value);
+   }
+ 
+-  inline uint64_t
+-  history_retain_length() const {
+-    return wuffs_bzip2__decoder__history_retain_length(this);
++  inline wuffs_base__optional_u63
++  dst_history_retain_length() const {
++    return wuffs_bzip2__decoder__dst_history_retain_length(this);
+   }
+ 
+   inline wuffs_base__range_ii_u64
+@@ -7606,25 +7955,23 @@ extern const char wuffs_cbor__error__unsupported_recursion_depth[];
+ 
+ // ---------------- Public Consts
+ 
+-#define WUFFS_CBOR__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
++#define WUFFS_CBOR__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
+ 
+-#define WUFFS_CBOR__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
++#define WUFFS_CBOR__DECODER_DEPTH_MAX_INCL 1024u
+ 
+-#define WUFFS_CBOR__DECODER_DEPTH_MAX_INCL 1024
++#define WUFFS_CBOR__DECODER_DST_TOKEN_BUFFER_LENGTH_MIN_INCL 2u
+ 
+-#define WUFFS_CBOR__DECODER_DST_TOKEN_BUFFER_LENGTH_MIN_INCL 2
++#define WUFFS_CBOR__DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL 9u
+ 
+-#define WUFFS_CBOR__DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL 9
++#define WUFFS_CBOR__TOKEN_VALUE_MAJOR 787997u
+ 
+-#define WUFFS_CBOR__TOKEN_VALUE_MAJOR 787997
++#define WUFFS_CBOR__TOKEN_VALUE_MINOR__DETAIL_MASK 262143u
+ 
+-#define WUFFS_CBOR__TOKEN_VALUE_MINOR__DETAIL_MASK 262143
++#define WUFFS_CBOR__TOKEN_VALUE_MINOR__MINUS_1_MINUS_X 16777216u
+ 
+-#define WUFFS_CBOR__TOKEN_VALUE_MINOR__MINUS_1_MINUS_X 16777216
++#define WUFFS_CBOR__TOKEN_VALUE_MINOR__SIMPLE_VALUE 8388608u
+ 
+-#define WUFFS_CBOR__TOKEN_VALUE_MINOR__SIMPLE_VALUE 8388608
+-
+-#define WUFFS_CBOR__TOKEN_VALUE_MINOR__TAG 4194304
++#define WUFFS_CBOR__TOKEN_VALUE_MINOR__TAG 4194304u
+ 
+ // ---------------- Struct Declarations
+ 
+@@ -7691,11 +8038,6 @@ wuffs_cbor__decoder__set_quirk(
+     uint32_t a_key,
+     uint64_t a_value);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_cbor__decoder__history_retain_length(
+-    const wuffs_cbor__decoder* self);
+-
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+ wuffs_cbor__decoder__workbuf_len(
+@@ -7738,7 +8080,7 @@ struct wuffs_cbor__decoder__struct {
+ 
+     bool f_end_of_data;
+ 
+-    uint32_t p_decode_tokens[1];
++    uint32_t p_decode_tokens;
+   } private_impl;
+ 
+   struct {
+@@ -7750,7 +8092,7 @@ struct wuffs_cbor__decoder__struct {
+       uint32_t v_depth;
+       bool v_tagged;
+       uint8_t v_indefinite_string_major_type;
+-    } s_decode_tokens[1];
++    } s_decode_tokens;
+   } private_data;
+ 
+ #ifdef __cplusplus
+@@ -7828,11 +8170,6 @@ struct wuffs_cbor__decoder__struct {
+     return wuffs_cbor__decoder__set_quirk(this, a_key, a_value);
+   }
+ 
+-  inline uint64_t
+-  history_retain_length() const {
+-    return wuffs_cbor__decoder__history_retain_length(this);
+-  }
+-
+   inline wuffs_base__range_ii_u64
+   workbuf_len() const {
+     return wuffs_cbor__decoder__workbuf_len(this);
+@@ -8074,6 +8411,227 @@ struct wuffs_crc32__ieee_hasher__struct {
+ 
+ #endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC32) || defined(WUFFS_NONMONOLITHIC)
+ 
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC64) || defined(WUFFS_NONMONOLITHIC)
++
++// ---------------- Status Codes
++
++// ---------------- Public Consts
++
++// ---------------- Struct Declarations
++
++typedef struct wuffs_crc64__ecma_hasher__struct wuffs_crc64__ecma_hasher;
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++// ---------------- Public Initializer Prototypes
++
++// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
++// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
++//
++// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
++// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_crc64__ecma_hasher__initialize(
++    wuffs_crc64__ecma_hasher* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options);
++
++size_t
++sizeof__wuffs_crc64__ecma_hasher(void);
++
++// ---------------- Allocs
++
++// These functions allocate and initialize Wuffs structs. They return NULL if
++// memory allocation fails. If they return non-NULL, there is no need to call
++// wuffs_foo__bar__initialize, but the caller is responsible for eventually
++// calling free on the returned pointer. That pointer is effectively a C++
++// std::unique_ptr<T, wuffs_unique_ptr_deleter>.
++
++wuffs_crc64__ecma_hasher*
++wuffs_crc64__ecma_hasher__alloc(void);
++
++static inline wuffs_base__hasher_u64*
++wuffs_crc64__ecma_hasher__alloc_as__wuffs_base__hasher_u64(void) {
++  return (wuffs_base__hasher_u64*)(wuffs_crc64__ecma_hasher__alloc());
++}
++
++// ---------------- Upcasts
++
++static inline wuffs_base__hasher_u64*
++wuffs_crc64__ecma_hasher__upcast_as__wuffs_base__hasher_u64(
++    wuffs_crc64__ecma_hasher* p) {
++  return (wuffs_base__hasher_u64*)p;
++}
++
++// ---------------- Public Function Prototypes
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_crc64__ecma_hasher__get_quirk(
++    const wuffs_crc64__ecma_hasher* self,
++    uint32_t a_key);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_crc64__ecma_hasher__set_quirk(
++    wuffs_crc64__ecma_hasher* self,
++    uint32_t a_key,
++    uint64_t a_value);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_crc64__ecma_hasher__update(
++    wuffs_crc64__ecma_hasher* self,
++    wuffs_base__slice_u8 a_x);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_crc64__ecma_hasher__update_u64(
++    wuffs_crc64__ecma_hasher* self,
++    wuffs_base__slice_u8 a_x);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_crc64__ecma_hasher__checksum_u64(
++    const wuffs_crc64__ecma_hasher* self);
++
++#ifdef __cplusplus
++}  // extern "C"
++#endif
++
++// ---------------- Struct Definitions
++
++// These structs' fields, and the sizeof them, are private implementation
++// details that aren't guaranteed to be stable across Wuffs versions.
++//
++// See https://en.wikipedia.org/wiki/Opaque_pointer#C
++
++#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
++
++struct wuffs_crc64__ecma_hasher__struct {
++  // Do not access the private_impl's or private_data's fields directly. There
++  // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
++  // the wuffs_foo__bar__baz functions.
++  //
++  // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
++  // can be stack allocated when WUFFS_IMPLEMENTATION is defined.
++
++  struct {
++    uint32_t magic;
++    uint32_t active_coroutine;
++    wuffs_base__vtable vtable_for__wuffs_base__hasher_u64;
++    wuffs_base__vtable null_vtable;
++
++    uint64_t f_state;
++
++    wuffs_base__empty_struct (*choosy_up)(
++        wuffs_crc64__ecma_hasher* self,
++        wuffs_base__slice_u8 a_x);
++  } private_impl;
++
++#ifdef __cplusplus
++#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
++  using unique_ptr = std::unique_ptr<wuffs_crc64__ecma_hasher, wuffs_unique_ptr_deleter>;
++
++  // On failure, the alloc_etc functions return nullptr. They don't throw.
++
++  static inline unique_ptr
++  alloc() {
++    return unique_ptr(wuffs_crc64__ecma_hasher__alloc());
++  }
++
++  static inline wuffs_base__hasher_u64::unique_ptr
++  alloc_as__wuffs_base__hasher_u64() {
++    return wuffs_base__hasher_u64::unique_ptr(
++        wuffs_crc64__ecma_hasher__alloc_as__wuffs_base__hasher_u64());
++  }
++#endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
++
++#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
++  // Disallow constructing or copying an object via standard C++ mechanisms,
++  // e.g. the "new" operator, as this struct is intentionally opaque. Its total
++  // size and field layout is not part of the public, stable, memory-safe API.
++  // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
++  // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
++  // their first argument) rather than tweaking bar.private_impl.qux fields.
++  //
++  // In C, we can just leave wuffs_foo__bar as an incomplete type (unless
++  // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
++  // order to provide convenience methods. These forward on "this", so that you
++  // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
++  wuffs_crc64__ecma_hasher__struct() = delete;
++  wuffs_crc64__ecma_hasher__struct(const wuffs_crc64__ecma_hasher__struct&) = delete;
++  wuffs_crc64__ecma_hasher__struct& operator=(
++      const wuffs_crc64__ecma_hasher__struct&) = delete;
++#endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
++
++#if !defined(WUFFS_IMPLEMENTATION)
++  // As above, the size of the struct is not part of the public API, and unless
++  // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
++  // allocated, not stack allocated. Its size is not intended to be known at
++  // compile time, but it is unfortunately divulged as a side effect of
++  // defining C++ convenience methods. Use "sizeof__T()", calling the function,
++  // instead of "sizeof T", invoking the operator. To make the two values
++  // different, so that passing the latter will be rejected by the initialize
++  // function, we add an arbitrary amount of dead weight.
++  uint8_t dead_weight[123000000];  // 123 MB.
++#endif  // !defined(WUFFS_IMPLEMENTATION)
++
++  inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++  initialize(
++      size_t sizeof_star_self,
++      uint64_t wuffs_version,
++      uint32_t options) {
++    return wuffs_crc64__ecma_hasher__initialize(
++        this, sizeof_star_self, wuffs_version, options);
++  }
++
++  inline wuffs_base__hasher_u64*
++  upcast_as__wuffs_base__hasher_u64() {
++    return (wuffs_base__hasher_u64*)this;
++  }
++
++  inline uint64_t
++  get_quirk(
++      uint32_t a_key) const {
++    return wuffs_crc64__ecma_hasher__get_quirk(this, a_key);
++  }
++
++  inline wuffs_base__status
++  set_quirk(
++      uint32_t a_key,
++      uint64_t a_value) {
++    return wuffs_crc64__ecma_hasher__set_quirk(this, a_key, a_value);
++  }
++
++  inline wuffs_base__empty_struct
++  update(
++      wuffs_base__slice_u8 a_x) {
++    return wuffs_crc64__ecma_hasher__update(this, a_x);
++  }
++
++  inline uint64_t
++  update_u64(
++      wuffs_base__slice_u8 a_x) {
++    return wuffs_crc64__ecma_hasher__update_u64(this, a_x);
++  }
++
++  inline uint64_t
++  checksum_u64() const {
++    return wuffs_crc64__ecma_hasher__checksum_u64(this);
++  }
++
++#endif  // __cplusplus
++};  // struct wuffs_crc64__ecma_hasher__struct
++
++#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
++
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC64) || defined(WUFFS_NONMONOLITHIC)
++
+ #if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__DEFLATE) || defined(WUFFS_NONMONOLITHIC)
+ 
+ // ---------------- Status Codes
+@@ -8095,9 +8653,9 @@ extern const char wuffs_deflate__error__truncated_input[];
+ 
+ // ---------------- Public Consts
+ 
+-#define WUFFS_DEFLATE__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
++#define WUFFS_DEFLATE__DECODER_DST_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0u
+ 
+-#define WUFFS_DEFLATE__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 1
++#define WUFFS_DEFLATE__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 1u
+ 
+ // ---------------- Struct Declarations
+ 
+@@ -8171,8 +8729,8 @@ wuffs_deflate__decoder__set_quirk(
+     uint64_t a_value);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_deflate__decoder__history_retain_length(
++WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
++wuffs_deflate__decoder__dst_history_retain_length(
+     const wuffs_deflate__decoder* self);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+@@ -8222,16 +8780,16 @@ struct wuffs_deflate__decoder__struct {
+     uint32_t f_n_huffs_bits[2];
+     bool f_end_of_block;
+ 
+-    uint32_t p_transform_io[1];
+-    uint32_t p_do_transform_io[1];
+-    uint32_t p_decode_blocks[1];
+-    uint32_t p_decode_uncompressed[1];
+-    uint32_t p_init_dynamic_huffman[1];
++    uint32_t p_transform_io;
++    uint32_t p_do_transform_io;
++    uint32_t p_decode_blocks;
++    uint32_t p_decode_uncompressed;
++    uint32_t p_init_dynamic_huffman;
+     wuffs_base__status (*choosy_decode_huffman_fast64)(
+         wuffs_deflate__decoder* self,
+         wuffs_base__io_buffer* a_dst,
+         wuffs_base__io_buffer* a_src);
+-    uint32_t p_decode_huffman_slow[1];
++    uint32_t p_decode_huffman_slow;
+   } private_impl;
+ 
+   struct {
+@@ -8241,11 +8799,11 @@ struct wuffs_deflate__decoder__struct {
+ 
+     struct {
+       uint32_t v_final;
+-    } s_decode_blocks[1];
++    } s_decode_blocks;
+     struct {
+       uint32_t v_length;
+       uint64_t scratch;
+-    } s_decode_uncompressed[1];
++    } s_decode_uncompressed;
+     struct {
+       uint32_t v_bits;
+       uint32_t v_n_bits;
+@@ -8257,7 +8815,7 @@ struct wuffs_deflate__decoder__struct {
+       uint32_t v_n_extra_bits;
+       uint8_t v_rep_symbol;
+       uint32_t v_rep_count;
+-    } s_init_dynamic_huffman[1];
++    } s_init_dynamic_huffman;
+     struct {
+       uint32_t v_bits;
+       uint32_t v_n_bits;
+@@ -8269,7 +8827,7 @@ struct wuffs_deflate__decoder__struct {
+       uint32_t v_length;
+       uint32_t v_dist_minus_1;
+       uint64_t scratch;
+-    } s_decode_huffman_slow[1];
++    } s_decode_huffman_slow;
+   } private_data;
+ 
+ #ifdef __cplusplus
+@@ -8353,9 +8911,9 @@ struct wuffs_deflate__decoder__struct {
+     return wuffs_deflate__decoder__set_quirk(this, a_key, a_value);
+   }
+ 
+-  inline uint64_t
+-  history_retain_length() const {
+-    return wuffs_deflate__decoder__history_retain_length(this);
++  inline wuffs_base__optional_u63
++  dst_history_retain_length() const {
++    return wuffs_deflate__decoder__dst_history_retain_length(this);
+   }
+ 
+   inline wuffs_base__range_ii_u64
+@@ -8393,23 +8951,21 @@ extern const char wuffs_gif__error__truncated_input[];
+ 
+ // ---------------- Public Consts
+ 
+-#define WUFFS_GIF__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
++#define WUFFS_GIF__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
+ 
+-#define WUFFS_GIF__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
++#define WUFFS_GIF__QUIRK_DELAY_NUM_DECODED_FRAMES 1041635328u
+ 
+-#define WUFFS_GIF__QUIRK_DELAY_NUM_DECODED_FRAMES 1041635328
++#define WUFFS_GIF__QUIRK_FIRST_FRAME_LOCAL_PALETTE_MEANS_BLACK_BACKGROUND 1041635329u
+ 
+-#define WUFFS_GIF__QUIRK_FIRST_FRAME_LOCAL_PALETTE_MEANS_BLACK_BACKGROUND 1041635329
++#define WUFFS_GIF__QUIRK_HONOR_BACKGROUND_COLOR 1041635330u
+ 
+-#define WUFFS_GIF__QUIRK_HONOR_BACKGROUND_COLOR 1041635330
++#define WUFFS_GIF__QUIRK_IGNORE_TOO_MUCH_PIXEL_DATA 1041635331u
+ 
+-#define WUFFS_GIF__QUIRK_IGNORE_TOO_MUCH_PIXEL_DATA 1041635331
++#define WUFFS_GIF__QUIRK_IMAGE_BOUNDS_ARE_STRICT 1041635332u
+ 
+-#define WUFFS_GIF__QUIRK_IMAGE_BOUNDS_ARE_STRICT 1041635332
++#define WUFFS_GIF__QUIRK_REJECT_EMPTY_FRAME 1041635333u
+ 
+-#define WUFFS_GIF__QUIRK_REJECT_EMPTY_FRAME 1041635333
+-
+-#define WUFFS_GIF__QUIRK_REJECT_EMPTY_PALETTE 1041635334
++#define WUFFS_GIF__QUIRK_REJECT_EMPTY_PALETTE 1041635334u
+ 
+ // ---------------- Struct Declarations
+ 
+@@ -8518,11 +9074,6 @@ WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
+ wuffs_gif__decoder__frame_dirty_rect(
+     const wuffs_gif__decoder* self);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_gif__decoder__history_retain_length(
+-    const wuffs_gif__decoder* self);
+-
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+ wuffs_gif__decoder__workbuf_len(
+@@ -8627,25 +9178,25 @@ struct wuffs_gif__decoder__struct {
+     uint32_t f_lzw_read_from_return_value;
+     uint16_t f_lzw_prefixes[4096];
+ 
+-    uint32_t p_decode_image_config[1];
+-    uint32_t p_do_decode_image_config[1];
+-    uint32_t p_tell_me_more[1];
+-    uint32_t p_do_tell_me_more[1];
+-    uint32_t p_decode_frame_config[1];
+-    uint32_t p_do_decode_frame_config[1];
+-    uint32_t p_skip_frame[1];
+-    uint32_t p_decode_frame[1];
+-    uint32_t p_do_decode_frame[1];
+-    uint32_t p_decode_up_to_id_part1[1];
+-    uint32_t p_decode_header[1];
+-    uint32_t p_decode_lsd[1];
+-    uint32_t p_decode_extension[1];
+-    uint32_t p_skip_blocks[1];
+-    uint32_t p_decode_ae[1];
+-    uint32_t p_decode_gc[1];
+-    uint32_t p_decode_id_part0[1];
+-    uint32_t p_decode_id_part1[1];
+-    uint32_t p_decode_id_part2[1];
++    uint32_t p_decode_image_config;
++    uint32_t p_do_decode_image_config;
++    uint32_t p_tell_me_more;
++    uint32_t p_do_tell_me_more;
++    uint32_t p_decode_frame_config;
++    uint32_t p_do_decode_frame_config;
++    uint32_t p_skip_frame;
++    uint32_t p_decode_frame;
++    uint32_t p_do_decode_frame;
++    uint32_t p_decode_up_to_id_part1;
++    uint32_t p_decode_header;
++    uint32_t p_decode_lsd;
++    uint32_t p_decode_extension;
++    uint32_t p_skip_blocks;
++    uint32_t p_decode_ae;
++    uint32_t p_decode_gc;
++    uint32_t p_decode_id_part0;
++    uint32_t p_decode_id_part1;
++    uint32_t p_decode_id_part2;
+   } private_impl;
+ 
+   struct {
+@@ -8658,24 +9209,23 @@ struct wuffs_gif__decoder__struct {
+ 
+     struct {
+       uint32_t v_background_color;
+-    } s_do_decode_frame_config[1];
++    } s_do_decode_frame_config;
+     struct {
+       uint64_t scratch;
+-    } s_skip_frame[1];
++    } s_skip_frame;
+     struct {
+-      uint8_t v_c[6];
+-      uint32_t v_i;
+-    } s_decode_header[1];
++      uint64_t scratch;
++    } s_decode_header;
+     struct {
+       uint8_t v_flags;
+       uint8_t v_background_color_index;
+       uint32_t v_num_palette_entries;
+       uint32_t v_i;
+       uint64_t scratch;
+-    } s_decode_lsd[1];
++    } s_decode_lsd;
+     struct {
+       uint64_t scratch;
+-    } s_skip_blocks[1];
++    } s_skip_blocks;
+     struct {
+       uint8_t v_block_size;
+       bool v_is_animexts;
+@@ -8683,24 +9233,24 @@ struct wuffs_gif__decoder__struct {
+       bool v_is_iccp;
+       bool v_is_xmp;
+       uint64_t scratch;
+-    } s_decode_ae[1];
++    } s_decode_ae;
+     struct {
+       uint64_t scratch;
+-    } s_decode_gc[1];
++    } s_decode_gc;
+     struct {
+       uint64_t scratch;
+-    } s_decode_id_part0[1];
++    } s_decode_id_part0;
+     struct {
+       uint8_t v_which_palette;
+       uint32_t v_num_palette_entries;
+       uint32_t v_i;
+       uint64_t scratch;
+-    } s_decode_id_part1[1];
++    } s_decode_id_part1;
+     struct {
+       uint64_t v_block_size;
+       bool v_need_block_size;
+       uint64_t scratch;
+-    } s_decode_id_part2[1];
++    } s_decode_id_part2;
+   } private_data;
+ 
+ #ifdef __cplusplus
+@@ -8820,11 +9370,6 @@ struct wuffs_gif__decoder__struct {
+     return wuffs_gif__decoder__frame_dirty_rect(this);
+   }
+ 
+-  inline uint64_t
+-  history_retain_length() const {
+-    return wuffs_gif__decoder__history_retain_length(this);
+-  }
+-
+   inline wuffs_base__range_ii_u64
+   workbuf_len() const {
+     return wuffs_gif__decoder__workbuf_len(this);
+@@ -8873,9 +9418,9 @@ extern const char wuffs_gzip__error__truncated_input[];
+ 
+ // ---------------- Public Consts
+ 
+-#define WUFFS_GZIP__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
++#define WUFFS_GZIP__DECODER_DST_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0u
+ 
+-#define WUFFS_GZIP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 1
++#define WUFFS_GZIP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 1u
+ 
+ // ---------------- Struct Declarations
+ 
+@@ -8943,8 +9488,8 @@ wuffs_gzip__decoder__set_quirk(
+     uint64_t a_value);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_gzip__decoder__history_retain_length(
++WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
++wuffs_gzip__decoder__dst_history_retain_length(
+     const wuffs_gzip__decoder* self);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+@@ -8989,8 +9534,8 @@ struct wuffs_gzip__decoder__struct {
+ 
+     bool f_ignore_checksum;
+ 
+-    uint32_t p_transform_io[1];
+-    uint32_t p_do_transform_io[1];
++    uint32_t p_transform_io;
++    uint32_t p_do_transform_io;
+   } private_impl;
+ 
+   struct {
+@@ -8999,11 +9544,11 @@ struct wuffs_gzip__decoder__struct {
+ 
+     struct {
+       uint8_t v_flags;
+-      uint32_t v_checksum_got;
+-      uint32_t v_decoded_length_got;
++      uint32_t v_checksum_have;
++      uint32_t v_decoded_length_have;
+       uint32_t v_checksum_want;
+       uint64_t scratch;
+-    } s_do_transform_io[1];
++    } s_do_transform_io;
+   } private_data;
+ 
+ #ifdef __cplusplus
+@@ -9081,9 +9626,9 @@ struct wuffs_gzip__decoder__struct {
+     return wuffs_gzip__decoder__set_quirk(this, a_key, a_value);
+   }
+ 
+-  inline uint64_t
+-  history_retain_length() const {
+-    return wuffs_gzip__decoder__history_retain_length(this);
++  inline wuffs_base__optional_u63
++  dst_history_retain_length() const {
++    return wuffs_gzip__decoder__dst_history_retain_length(this);
+   }
+ 
+   inline wuffs_base__range_ii_u64
+@@ -9117,8 +9662,10 @@ extern const char wuffs_jpeg__error__bad_sof_marker[];
+ extern const char wuffs_jpeg__error__bad_sos_marker[];
+ extern const char wuffs_jpeg__error__bad_header[];
+ extern const char wuffs_jpeg__error__bad_marker[];
++extern const char wuffs_jpeg__error__bad_scan_count[];
+ extern const char wuffs_jpeg__error__missing_huffman_table[];
+ extern const char wuffs_jpeg__error__missing_quantization_table[];
++extern const char wuffs_jpeg__error__rejected_progressive_jpeg[];
+ extern const char wuffs_jpeg__error__truncated_input[];
+ extern const char wuffs_jpeg__error__unsupported_arithmetic_coding[];
+ extern const char wuffs_jpeg__error__unsupported_color_model[];
+@@ -9134,9 +9681,9 @@ extern const char wuffs_jpeg__error__unsupported_scan_count[];
+ 
+ // ---------------- Public Consts
+ 
+-#define WUFFS_JPEG__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
++#define WUFFS_JPEG__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 51552191232u
+ 
+-#define WUFFS_JPEG__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 51552191232
++#define WUFFS_JPEG__QUIRK_REJECT_PROGRESSIVE_JPEGS 1220532224u
+ 
+ // ---------------- Struct Declarations
+ 
+@@ -9269,11 +9816,6 @@ wuffs_jpeg__decoder__tell_me_more(
+     wuffs_base__more_information* a_minfo,
+     wuffs_base__io_buffer* a_src);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_jpeg__decoder__history_retain_length(
+-    const wuffs_jpeg__decoder* self);
+-
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+ wuffs_jpeg__decoder__workbuf_len(
+@@ -9368,6 +9910,13 @@ struct wuffs_jpeg__decoder__struct {
+     uint32_t f_bitstream_ri;
+     uint32_t f_bitstream_wi;
+     bool f_bitstream_is_closed;
++    bool f_expect_multiple_scans;
++    bool f_use_lower_quality;
++    bool f_reject_progressive_jpegs;
++    bool f_swizzle_immediately;
++    wuffs_base__status f_swizzle_immediately_status;
++    uint32_t f_swizzle_immediately_b_offsets[10];
++    uint32_t f_swizzle_immediately_c_offsets[5];
+     uint32_t f_bitstream_padding;
+     uint16_t f_quant_tables[4][64];
+     uint16_t f_saved_quant_tables[4][64];
+@@ -9381,28 +9930,29 @@ struct wuffs_jpeg__decoder__struct {
+         wuffs_base__slice_u8 a_dst_buffer,
+         uint64_t a_dst_stride,
+         uint32_t a_q);
+-    uint32_t p_decode_image_config[1];
+-    uint32_t p_do_decode_image_config[1];
+-    uint32_t p_decode_dqt[1];
+-    uint32_t p_decode_dri[1];
+-    uint32_t p_decode_appn[1];
+-    uint32_t p_decode_sof[1];
+-    uint32_t p_decode_frame_config[1];
+-    uint32_t p_do_decode_frame_config[1];
+-    uint32_t p_decode_frame[1];
+-    uint32_t p_do_decode_frame[1];
+-    uint32_t p_decode_dht[1];
+-    uint32_t p_decode_sos[1];
+-    uint32_t p_prepare_scan[1];
++    uint32_t p_decode_image_config;
++    uint32_t p_do_decode_image_config;
++    uint32_t p_decode_dqt;
++    uint32_t p_decode_dri;
++    uint32_t p_decode_appn;
++    uint32_t p_decode_sof;
++    uint32_t p_decode_frame_config;
++    uint32_t p_do_decode_frame_config;
++    uint32_t p_decode_frame;
++    uint32_t p_do_decode_frame;
++    uint32_t p_decode_dht;
++    uint32_t p_decode_sos;
++    uint32_t p_prepare_scan;
+     wuffs_base__empty_struct (*choosy_load_mcu_blocks_for_single_component)(
+         wuffs_jpeg__decoder* self,
+         uint32_t a_mx,
+         uint32_t a_my,
+         wuffs_base__slice_u8 a_workbuf,
+         uint32_t a_csel);
+-    uint32_t p_skip_past_the_next_restart_marker[1];
++    uint32_t p_skip_past_the_next_restart_marker;
+     uint32_t (*choosy_decode_mcu)(
+         wuffs_jpeg__decoder* self,
++        wuffs_base__pixel_buffer* a_dst,
+         wuffs_base__slice_u8 a_workbuf,
+         uint32_t a_mx,
+         uint32_t a_my);
+@@ -9411,6 +9961,7 @@ struct wuffs_jpeg__decoder__struct {
+   struct {
+     uint8_t f_bitstream_buffer[2048];
+     uint16_t f_mcu_blocks[10][64];
++    uint8_t f_swizzle_immediately_buffer[640];
+     uint8_t f_swizzle_ycck_scratch_buffer_2k[2048];
+     uint8_t f_dht_temp_counts[16];
+     uint8_t f_dht_temp_bit_lengths[256];
+@@ -9420,38 +9971,38 @@ struct wuffs_jpeg__decoder__struct {
+     struct {
+       uint8_t v_marker;
+       uint64_t scratch;
+-    } s_do_decode_image_config[1];
++    } s_do_decode_image_config;
+     struct {
+       uint8_t v_q;
+       uint32_t v_i;
+-    } s_decode_dqt[1];
++    } s_decode_dqt;
+     struct {
+       uint64_t scratch;
+-    } s_decode_dri[1];
++    } s_decode_dri;
+     struct {
+       uint64_t scratch;
+-    } s_decode_appn[1];
++    } s_decode_appn;
+     struct {
+       uint32_t v_i;
+       uint64_t scratch;
+-    } s_decode_sof[1];
++    } s_decode_sof;
+     struct {
+       uint8_t v_marker;
+       uint64_t scratch;
+-    } s_do_decode_frame[1];
++    } s_do_decode_frame;
+     struct {
+       uint8_t v_tc4_th;
+       uint32_t v_total_count;
+       uint32_t v_i;
+-    } s_decode_dht[1];
++    } s_decode_dht;
+     struct {
+       uint32_t v_my;
+       uint32_t v_mx;
+-    } s_decode_sos[1];
++    } s_decode_sos;
+     struct {
+       uint32_t v_i;
+       uint64_t scratch;
+-    } s_prepare_scan[1];
++    } s_prepare_scan;
+   } private_data;
+ 
+ #ifdef __cplusplus
+@@ -9595,11 +10146,6 @@ struct wuffs_jpeg__decoder__struct {
+     return wuffs_jpeg__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
+   }
+ 
+-  inline uint64_t
+-  history_retain_length() const {
+-    return wuffs_jpeg__decoder__history_retain_length(this);
+-  }
+-
+   inline wuffs_base__range_ii_u64
+   workbuf_len() const {
+     return wuffs_jpeg__decoder__workbuf_len(this);
+@@ -9627,55 +10173,53 @@ extern const char wuffs_json__error__unsupported_recursion_depth[];
+ 
+ // ---------------- Public Consts
+ 
+-#define WUFFS_JSON__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
+-
+-#define WUFFS_JSON__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
++#define WUFFS_JSON__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
+ 
+-#define WUFFS_JSON__DECODER_DEPTH_MAX_INCL 1024
++#define WUFFS_JSON__DECODER_DEPTH_MAX_INCL 1024u
+ 
+-#define WUFFS_JSON__DECODER_DST_TOKEN_BUFFER_LENGTH_MIN_INCL 1
++#define WUFFS_JSON__DECODER_DST_TOKEN_BUFFER_LENGTH_MIN_INCL 1u
+ 
+-#define WUFFS_JSON__DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL 100
++#define WUFFS_JSON__DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL 100u
+ 
+-#define WUFFS_JSON__QUIRK_ALLOW_ASCII_CONTROL_CODES 1225364480
++#define WUFFS_JSON__QUIRK_ALLOW_ASCII_CONTROL_CODES 1225364480u
+ 
+-#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_A 1225364481
++#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_A 1225364481u
+ 
+-#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_CAPITAL_U 1225364482
++#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_CAPITAL_U 1225364482u
+ 
+-#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_E 1225364483
++#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_E 1225364483u
+ 
+-#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_NEW_LINE 1225364484
++#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_NEW_LINE 1225364484u
+ 
+-#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_QUESTION_MARK 1225364485
++#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_QUESTION_MARK 1225364485u
+ 
+-#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_SINGLE_QUOTE 1225364486
++#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_SINGLE_QUOTE 1225364486u
+ 
+-#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_V 1225364487
++#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_V 1225364487u
+ 
+-#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_X_AS_CODE_POINTS 1225364489
++#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_X_AS_CODE_POINTS 1225364489u
+ 
+-#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_ZERO 1225364490
++#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_ZERO 1225364490u
+ 
+-#define WUFFS_JSON__QUIRK_ALLOW_COMMENT_BLOCK 1225364491
++#define WUFFS_JSON__QUIRK_ALLOW_COMMENT_BLOCK 1225364491u
+ 
+-#define WUFFS_JSON__QUIRK_ALLOW_COMMENT_LINE 1225364492
++#define WUFFS_JSON__QUIRK_ALLOW_COMMENT_LINE 1225364492u
+ 
+-#define WUFFS_JSON__QUIRK_ALLOW_EXTRA_COMMA 1225364493
++#define WUFFS_JSON__QUIRK_ALLOW_EXTRA_COMMA 1225364493u
+ 
+-#define WUFFS_JSON__QUIRK_ALLOW_INF_NAN_NUMBERS 1225364494
++#define WUFFS_JSON__QUIRK_ALLOW_INF_NAN_NUMBERS 1225364494u
+ 
+-#define WUFFS_JSON__QUIRK_ALLOW_LEADING_ASCII_RECORD_SEPARATOR 1225364495
++#define WUFFS_JSON__QUIRK_ALLOW_LEADING_ASCII_RECORD_SEPARATOR 1225364495u
+ 
+-#define WUFFS_JSON__QUIRK_ALLOW_LEADING_UNICODE_BYTE_ORDER_MARK 1225364496
++#define WUFFS_JSON__QUIRK_ALLOW_LEADING_UNICODE_BYTE_ORDER_MARK 1225364496u
+ 
+-#define WUFFS_JSON__QUIRK_ALLOW_TRAILING_FILLER 1225364497
++#define WUFFS_JSON__QUIRK_ALLOW_TRAILING_FILLER 1225364497u
+ 
+-#define WUFFS_JSON__QUIRK_EXPECT_TRAILING_NEW_LINE_OR_EOF 1225364498
++#define WUFFS_JSON__QUIRK_EXPECT_TRAILING_NEW_LINE_OR_EOF 1225364498u
+ 
+-#define WUFFS_JSON__QUIRK_JSON_POINTER_ALLOW_TILDE_N_TILDE_R_TILDE_T 1225364499
++#define WUFFS_JSON__QUIRK_JSON_POINTER_ALLOW_TILDE_N_TILDE_R_TILDE_T 1225364499u
+ 
+-#define WUFFS_JSON__QUIRK_REPLACE_INVALID_UNICODE 1225364500
++#define WUFFS_JSON__QUIRK_REPLACE_INVALID_UNICODE 1225364500u
+ 
+ // ---------------- Struct Declarations
+ 
+@@ -9742,11 +10286,6 @@ wuffs_json__decoder__set_quirk(
+     uint32_t a_key,
+     uint64_t a_value);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_json__decoder__history_retain_length(
+-    const wuffs_json__decoder* self);
+-
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+ wuffs_json__decoder__workbuf_len(
+@@ -9794,11 +10333,11 @@ struct wuffs_json__decoder__struct {
+     uint8_t f_trailer_stop;
+     uint8_t f_comment_type;
+ 
+-    uint32_t p_decode_tokens[1];
+-    uint32_t p_decode_leading[1];
+-    uint32_t p_decode_comment[1];
+-    uint32_t p_decode_inf_nan[1];
+-    uint32_t p_decode_trailer[1];
++    uint32_t p_decode_tokens;
++    uint32_t p_decode_leading;
++    uint32_t p_decode_comment;
++    uint32_t p_decode_inf_nan;
++    uint32_t p_decode_trailer;
+   } private_impl;
+ 
+   struct {
+@@ -9808,7 +10347,7 @@ struct wuffs_json__decoder__struct {
+       uint32_t v_depth;
+       uint32_t v_expect;
+       uint32_t v_expect_after_value;
+-    } s_decode_tokens[1];
++    } s_decode_tokens;
+   } private_data;
+ 
+ #ifdef __cplusplus
+@@ -9886,11 +10425,6 @@ struct wuffs_json__decoder__struct {
+     return wuffs_json__decoder__set_quirk(this, a_key, a_value);
+   }
+ 
+-  inline uint64_t
+-  history_retain_length() const {
+-    return wuffs_json__decoder__history_retain_length(this);
+-  }
+-
+   inline wuffs_base__range_ii_u64
+   workbuf_len() const {
+     return wuffs_json__decoder__workbuf_len(this);
+@@ -9911,24 +10445,33 @@ struct wuffs_json__decoder__struct {
+ 
+ #endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JSON) || defined(WUFFS_NONMONOLITHIC)
+ 
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW) || defined(WUFFS_NONMONOLITHIC)
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZMA) || defined(WUFFS_NONMONOLITHIC)
+ 
+ // ---------------- Status Codes
+ 
+-extern const char wuffs_lzw__error__bad_code[];
+-extern const char wuffs_lzw__error__truncated_input[];
++extern const char wuffs_lzma__error__bad_lzma2_header[];
++extern const char wuffs_lzma__error__bad_bitstream_trailer[];
++extern const char wuffs_lzma__error__bad_code[];
++extern const char wuffs_lzma__error__bad_decoded_length[];
++extern const char wuffs_lzma__error__bad_distance[];
++extern const char wuffs_lzma__error__bad_header[];
++extern const char wuffs_lzma__error__truncated_input[];
++extern const char wuffs_lzma__error__unsupported_decoded_length[];
++extern const char wuffs_lzma__error__unsupported_properties[];
+ 
+ // ---------------- Public Consts
+ 
+-#define WUFFS_LZW__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
++#define WUFFS_LZMA__DECODER_DST_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0u
+ 
+-#define WUFFS_LZW__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
++#define WUFFS_LZMA__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 4294967568u
+ 
+-#define WUFFS_LZW__QUIRK_LITERAL_WIDTH_PLUS_ONE 1348378624
++#define WUFFS_LZMA__QUIRK_ALLOW_NON_ZERO_INITIAL_BYTE 1348001792u
++
++#define WUFFS_LZMA__QUIRK_FORMAT_EXTENSION 1348001793u
+ 
+ // ---------------- Struct Declarations
+ 
+-typedef struct wuffs_lzw__decoder__struct wuffs_lzw__decoder;
++typedef struct wuffs_lzma__decoder__struct wuffs_lzma__decoder;
+ 
+ #ifdef __cplusplus
+ extern "C" {
+@@ -9943,14 +10486,14 @@ extern "C" {
+ // Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
+ 
+ wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_lzw__decoder__initialize(
+-    wuffs_lzw__decoder* self,
++wuffs_lzma__decoder__initialize(
++    wuffs_lzma__decoder* self,
+     size_t sizeof_star_self,
+     uint64_t wuffs_version,
+     uint32_t options);
+ 
+ size_t
+-sizeof__wuffs_lzw__decoder(void);
++sizeof__wuffs_lzma__decoder(void);
+ 
+ // ---------------- Allocs
+ 
+@@ -9960,19 +10503,19 @@ sizeof__wuffs_lzw__decoder(void);
+ // calling free on the returned pointer. That pointer is effectively a C++
+ // std::unique_ptr<T, wuffs_unique_ptr_deleter>.
+ 
+-wuffs_lzw__decoder*
+-wuffs_lzw__decoder__alloc(void);
++wuffs_lzma__decoder*
++wuffs_lzma__decoder__alloc(void);
+ 
+ static inline wuffs_base__io_transformer*
+-wuffs_lzw__decoder__alloc_as__wuffs_base__io_transformer(void) {
+-  return (wuffs_base__io_transformer*)(wuffs_lzw__decoder__alloc());
++wuffs_lzma__decoder__alloc_as__wuffs_base__io_transformer(void) {
++  return (wuffs_base__io_transformer*)(wuffs_lzma__decoder__alloc());
+ }
+ 
+ // ---------------- Upcasts
+ 
+ static inline wuffs_base__io_transformer*
+-wuffs_lzw__decoder__upcast_as__wuffs_base__io_transformer(
+-    wuffs_lzw__decoder* p) {
++wuffs_lzma__decoder__upcast_as__wuffs_base__io_transformer(
++    wuffs_lzma__decoder* p) {
+   return (wuffs_base__io_transformer*)p;
+ }
+ 
+@@ -9980,40 +10523,35 @@ wuffs_lzw__decoder__upcast_as__wuffs_base__io_transformer(
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_lzw__decoder__get_quirk(
+-    const wuffs_lzw__decoder* self,
++wuffs_lzma__decoder__get_quirk(
++    const wuffs_lzma__decoder* self,
+     uint32_t a_key);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_lzw__decoder__set_quirk(
+-    wuffs_lzw__decoder* self,
++wuffs_lzma__decoder__set_quirk(
++    wuffs_lzma__decoder* self,
+     uint32_t a_key,
+     uint64_t a_value);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_lzw__decoder__history_retain_length(
+-    const wuffs_lzw__decoder* self);
++WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
++wuffs_lzma__decoder__dst_history_retain_length(
++    const wuffs_lzma__decoder* self);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_lzw__decoder__workbuf_len(
+-    const wuffs_lzw__decoder* self);
++wuffs_lzma__decoder__workbuf_len(
++    const wuffs_lzma__decoder* self);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_lzw__decoder__transform_io(
+-    wuffs_lzw__decoder* self,
++wuffs_lzma__decoder__transform_io(
++    wuffs_lzma__decoder* self,
+     wuffs_base__io_buffer* a_dst,
+     wuffs_base__io_buffer* a_src,
+     wuffs_base__slice_u8 a_workbuf);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__slice_u8
+-wuffs_lzw__decoder__flush(
+-    wuffs_lzw__decoder* self);
+-
+ #ifdef __cplusplus
+ }  // extern "C"
+ #endif
+@@ -10027,7 +10565,7 @@ wuffs_lzw__decoder__flush(
+ 
+ #if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
+ 
+-struct wuffs_lzw__decoder__struct {
++struct wuffs_lzma__decoder__struct {
+   // Do not access the private_impl's or private_data's fields directly. There
+   // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
+   // the wuffs_foo__bar__baz functions.
+@@ -10041,45 +10579,113 @@ struct wuffs_lzw__decoder__struct {
+     wuffs_base__vtable vtable_for__wuffs_base__io_transformer;
+     wuffs_base__vtable null_vtable;
+ 
+-    uint32_t f_pending_literal_width_plus_one;
+-    uint32_t f_literal_width;
+-    uint32_t f_clear_code;
+-    uint32_t f_end_code;
+-    uint32_t f_save_code;
+-    uint32_t f_prev_code;
+-    uint32_t f_width;
+-    uint32_t f_bits;
+-    uint32_t f_n_bits;
+-    uint32_t f_output_ri;
+-    uint32_t f_output_wi;
+-    uint32_t f_read_from_return_value;
+-    uint16_t f_prefixes[4096];
+-
+-    uint32_t p_transform_io[1];
+-    uint32_t p_write_to[1];
++    uint32_t f_lc;
++    uint32_t f_lp;
++    uint32_t f_pb;
++    uint32_t f_format_extension;
++    uint32_t f_dict_size;
++    uint32_t f_dict_workbuf_index;
++    uint32_t f_dict_seen;
++    uint64_t f_decoded_length;
++    uint64_t f_lzma2_encoded_length_have;
++    uint64_t f_lzma2_encoded_length_want;
++    bool f_lzma2_need_prob_reset;
++    bool f_lzma2_need_properties;
++    bool f_lzma2_need_dict_reset;
++    bool f_prev_lzma2_chunk_was_uncompressed;
++    bool f_allow_non_zero_initial_byte;
++    bool f_end_of_chunk;
++    uint8_t f_stashed_bytes[2];
++    uint32_t f_stashed_bits;
++    uint32_t f_stashed_range;
++    uint32_t f_stashed_state;
++    uint32_t f_stashed_rep0;
++    uint32_t f_stashed_rep1;
++    uint32_t f_stashed_rep2;
++    uint32_t f_stashed_rep3;
++    uint64_t f_stashed_pos;
++    uint64_t f_stashed_pos_end;
++
++    uint32_t p_decode_bitstream_slow;
++    uint32_t p_transform_io;
++    uint32_t p_do_transform_io;
++    uint32_t p_decode_bitstream;
++    uint32_t p_update_stashed_bytes;
++    uint32_t p_decode_optional_end_of_stream;
+   } private_impl;
+ 
+   struct {
+-    uint8_t f_suffixes[4096][8];
+-    uint16_t f_lm1s[4096];
+-    uint8_t f_output[8199];
++    uint16_t f_probs_ao00[192];
++    uint16_t f_probs_ao20[12];
++    uint16_t f_probs_ao40[12];
++    uint16_t f_probs_ao41[192];
++    uint16_t f_probs_ao60[12];
++    uint16_t f_probs_ao63[12];
++    uint16_t f_probs_match_len_low[16][8];
++    uint16_t f_probs_match_len_mid[16][8];
++    uint16_t f_probs_match_len_high[1][256];
++    uint16_t f_probs_longrep_len_low[16][8];
++    uint16_t f_probs_longrep_len_mid[16][8];
++    uint16_t f_probs_longrep_len_high[1][256];
++    uint16_t f_probs_slot[4][64];
++    uint16_t f_probs_small_dist[128];
++    uint16_t f_probs_large_dist[16];
++    uint16_t f_probs_lit[16][768];
++
++    struct {
++      uint32_t v_bits;
++      uint32_t v_range;
++      uint32_t v_state;
++      uint32_t v_rep0;
++      uint32_t v_rep1;
++      uint32_t v_rep2;
++      uint32_t v_rep3;
++      uint32_t v_rep;
++      uint64_t v_pos;
++      uint64_t v_pos_end;
++      uint32_t v_lc;
++      uint64_t v_lp_mask;
++      uint64_t v_pb_mask;
++      uint32_t v_tree_node;
++      uint8_t v_prev_byte;
++      uint32_t v_match_byte;
++      uint32_t v_len_state;
++      uint32_t v_slot;
++      uint32_t v_len;
++      uint32_t v_lanl_offset;
++      uint32_t v_num_extra_bits;
++      uint32_t v_dist_extra_bits;
++      uint32_t v_i;
++      uint32_t v_index_lit;
++      uint32_t v_index_len;
++      uint32_t v_index_small_dist_base;
++      uint32_t v_index_small_dist_extra;
++      uint32_t v_index_large_dist;
++      uint32_t v_dist;
++      uint64_t scratch;
++    } s_decode_bitstream_slow;
++    struct {
++      uint8_t v_header_byte;
++      uint32_t v_length;
++      uint64_t scratch;
++    } s_do_transform_io;
+   } private_data;
+ 
+ #ifdef __cplusplus
+ #if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
+-  using unique_ptr = std::unique_ptr<wuffs_lzw__decoder, wuffs_unique_ptr_deleter>;
++  using unique_ptr = std::unique_ptr<wuffs_lzma__decoder, wuffs_unique_ptr_deleter>;
+ 
+   // On failure, the alloc_etc functions return nullptr. They don't throw.
+ 
+   static inline unique_ptr
+   alloc() {
+-    return unique_ptr(wuffs_lzw__decoder__alloc());
++    return unique_ptr(wuffs_lzma__decoder__alloc());
+   }
+ 
+   static inline wuffs_base__io_transformer::unique_ptr
+   alloc_as__wuffs_base__io_transformer() {
+     return wuffs_base__io_transformer::unique_ptr(
+-        wuffs_lzw__decoder__alloc_as__wuffs_base__io_transformer());
++        wuffs_lzma__decoder__alloc_as__wuffs_base__io_transformer());
+   }
+ #endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
+ 
+@@ -10095,10 +10701,10 @@ struct wuffs_lzw__decoder__struct {
+   // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
+   // order to provide convenience methods. These forward on "this", so that you
+   // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
+-  wuffs_lzw__decoder__struct() = delete;
+-  wuffs_lzw__decoder__struct(const wuffs_lzw__decoder__struct&) = delete;
+-  wuffs_lzw__decoder__struct& operator=(
+-      const wuffs_lzw__decoder__struct&) = delete;
++  wuffs_lzma__decoder__struct() = delete;
++  wuffs_lzma__decoder__struct(const wuffs_lzma__decoder__struct&) = delete;
++  wuffs_lzma__decoder__struct& operator=(
++      const wuffs_lzma__decoder__struct&) = delete;
+ #endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
+ 
+ #if !defined(WUFFS_IMPLEMENTATION)
+@@ -10118,7 +10724,7 @@ struct wuffs_lzw__decoder__struct {
+       size_t sizeof_star_self,
+       uint64_t wuffs_version,
+       uint32_t options) {
+-    return wuffs_lzw__decoder__initialize(
++    return wuffs_lzma__decoder__initialize(
+         this, sizeof_star_self, wuffs_version, options);
+   }
+ 
+@@ -10130,24 +10736,24 @@ struct wuffs_lzw__decoder__struct {
+   inline uint64_t
+   get_quirk(
+       uint32_t a_key) const {
+-    return wuffs_lzw__decoder__get_quirk(this, a_key);
++    return wuffs_lzma__decoder__get_quirk(this, a_key);
+   }
+ 
+   inline wuffs_base__status
+   set_quirk(
+       uint32_t a_key,
+       uint64_t a_value) {
+-    return wuffs_lzw__decoder__set_quirk(this, a_key, a_value);
++    return wuffs_lzma__decoder__set_quirk(this, a_key, a_value);
+   }
+ 
+-  inline uint64_t
+-  history_retain_length() const {
+-    return wuffs_lzw__decoder__history_retain_length(this);
++  inline wuffs_base__optional_u63
++  dst_history_retain_length() const {
++    return wuffs_lzma__decoder__dst_history_retain_length(this);
+   }
+ 
+   inline wuffs_base__range_ii_u64
+   workbuf_len() const {
+-    return wuffs_lzw__decoder__workbuf_len(this);
++    return wuffs_lzma__decoder__workbuf_len(this);
+   }
+ 
+   inline wuffs_base__status
+@@ -10155,38 +10761,34 @@ struct wuffs_lzw__decoder__struct {
+       wuffs_base__io_buffer* a_dst,
+       wuffs_base__io_buffer* a_src,
+       wuffs_base__slice_u8 a_workbuf) {
+-    return wuffs_lzw__decoder__transform_io(this, a_dst, a_src, a_workbuf);
+-  }
+-
+-  inline wuffs_base__slice_u8
+-  flush() {
+-    return wuffs_lzw__decoder__flush(this);
++    return wuffs_lzma__decoder__transform_io(this, a_dst, a_src, a_workbuf);
+   }
+ 
+ #endif  // __cplusplus
+-};  // struct wuffs_lzw__decoder__struct
++};  // struct wuffs_lzma__decoder__struct
+ 
+ #endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW) || defined(WUFFS_NONMONOLITHIC)
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZMA) || defined(WUFFS_NONMONOLITHIC)
+ 
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM) || defined(WUFFS_NONMONOLITHIC)
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZIP) || defined(WUFFS_NONMONOLITHIC)
+ 
+ // ---------------- Status Codes
+ 
+-extern const char wuffs_netpbm__error__bad_header[];
+-extern const char wuffs_netpbm__error__truncated_input[];
+-extern const char wuffs_netpbm__error__unsupported_netpbm_file[];
++extern const char wuffs_lzip__error__bad_checksum[];
++extern const char wuffs_lzip__error__bad_footer[];
++extern const char wuffs_lzip__error__bad_header[];
++extern const char wuffs_lzip__error__truncated_input[];
+ 
+ // ---------------- Public Consts
+ 
+-#define WUFFS_NETPBM__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
++#define WUFFS_LZIP__DECODER_DST_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0u
+ 
+-#define WUFFS_NETPBM__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
++#define WUFFS_LZIP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 4294967568u
+ 
+ // ---------------- Struct Declarations
+ 
+-typedef struct wuffs_netpbm__decoder__struct wuffs_netpbm__decoder;
++typedef struct wuffs_lzip__decoder__struct wuffs_lzip__decoder;
+ 
+ #ifdef __cplusplus
+ extern "C" {
+@@ -10201,14 +10803,14 @@ extern "C" {
+ // Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
+ 
+ wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_netpbm__decoder__initialize(
+-    wuffs_netpbm__decoder* self,
++wuffs_lzip__decoder__initialize(
++    wuffs_lzip__decoder* self,
+     size_t sizeof_star_self,
+     uint64_t wuffs_version,
+     uint32_t options);
+ 
+ size_t
+-sizeof__wuffs_netpbm__decoder(void);
++sizeof__wuffs_lzip__decoder(void);
+ 
+ // ---------------- Allocs
+ 
+@@ -10218,112 +10820,54 @@ sizeof__wuffs_netpbm__decoder(void);
+ // calling free on the returned pointer. That pointer is effectively a C++
+ // std::unique_ptr<T, wuffs_unique_ptr_deleter>.
+ 
+-wuffs_netpbm__decoder*
+-wuffs_netpbm__decoder__alloc(void);
++wuffs_lzip__decoder*
++wuffs_lzip__decoder__alloc(void);
+ 
+-static inline wuffs_base__image_decoder*
+-wuffs_netpbm__decoder__alloc_as__wuffs_base__image_decoder(void) {
+-  return (wuffs_base__image_decoder*)(wuffs_netpbm__decoder__alloc());
++static inline wuffs_base__io_transformer*
++wuffs_lzip__decoder__alloc_as__wuffs_base__io_transformer(void) {
++  return (wuffs_base__io_transformer*)(wuffs_lzip__decoder__alloc());
+ }
+ 
+ // ---------------- Upcasts
+ 
+-static inline wuffs_base__image_decoder*
+-wuffs_netpbm__decoder__upcast_as__wuffs_base__image_decoder(
+-    wuffs_netpbm__decoder* p) {
+-  return (wuffs_base__image_decoder*)p;
++static inline wuffs_base__io_transformer*
++wuffs_lzip__decoder__upcast_as__wuffs_base__io_transformer(
++    wuffs_lzip__decoder* p) {
++  return (wuffs_base__io_transformer*)p;
+ }
+ 
+ // ---------------- Public Function Prototypes
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_netpbm__decoder__get_quirk(
+-    const wuffs_netpbm__decoder* self,
++wuffs_lzip__decoder__get_quirk(
++    const wuffs_lzip__decoder* self,
+     uint32_t a_key);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_netpbm__decoder__set_quirk(
+-    wuffs_netpbm__decoder* self,
++wuffs_lzip__decoder__set_quirk(
++    wuffs_lzip__decoder* self,
+     uint32_t a_key,
+     uint64_t a_value);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_netpbm__decoder__decode_image_config(
+-    wuffs_netpbm__decoder* self,
+-    wuffs_base__image_config* a_dst,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_netpbm__decoder__decode_frame_config(
+-    wuffs_netpbm__decoder* self,
+-    wuffs_base__frame_config* a_dst,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_netpbm__decoder__decode_frame(
+-    wuffs_netpbm__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
+-wuffs_netpbm__decoder__frame_dirty_rect(
+-    const wuffs_netpbm__decoder* self);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_netpbm__decoder__num_animation_loops(
+-    const wuffs_netpbm__decoder* self);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_netpbm__decoder__num_decoded_frame_configs(
+-    const wuffs_netpbm__decoder* self);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_netpbm__decoder__num_decoded_frames(
+-    const wuffs_netpbm__decoder* self);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_netpbm__decoder__restart_frame(
+-    wuffs_netpbm__decoder* self,
+-    uint64_t a_index,
+-    uint64_t a_io_position);
++WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
++wuffs_lzip__decoder__dst_history_retain_length(
++    const wuffs_lzip__decoder* self);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_netpbm__decoder__set_report_metadata(
+-    wuffs_netpbm__decoder* self,
+-    uint32_t a_fourcc,
+-    bool a_report);
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_lzip__decoder__workbuf_len(
++    const wuffs_lzip__decoder* self);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_netpbm__decoder__tell_me_more(
+-    wuffs_netpbm__decoder* self,
++wuffs_lzip__decoder__transform_io(
++    wuffs_lzip__decoder* self,
+     wuffs_base__io_buffer* a_dst,
+-    wuffs_base__more_information* a_minfo,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_netpbm__decoder__history_retain_length(
+-    const wuffs_netpbm__decoder* self);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_netpbm__decoder__workbuf_len(
+-    const wuffs_netpbm__decoder* self);
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf);
+ 
+ #ifdef __cplusplus
+ }  // extern "C"
+@@ -10338,7 +10882,7 @@ wuffs_netpbm__decoder__workbuf_len(
+ 
+ #if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
+ 
+-struct wuffs_netpbm__decoder__struct {
++struct wuffs_lzip__decoder__struct {
+   // Do not access the private_impl's or private_data's fields directly. There
+   // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
+   // the wuffs_foo__bar__baz functions.
+@@ -10349,42 +10893,41 @@ struct wuffs_netpbm__decoder__struct {
+   struct {
+     uint32_t magic;
+     uint32_t active_coroutine;
+-    wuffs_base__vtable vtable_for__wuffs_base__image_decoder;
++    wuffs_base__vtable vtable_for__wuffs_base__io_transformer;
+     wuffs_base__vtable null_vtable;
+ 
+-    uint32_t f_pixfmt;
+-    uint32_t f_width;
+-    uint32_t f_height;
+-    uint32_t f_max_value;
+-    uint8_t f_call_sequence;
+-    uint64_t f_frame_config_io_position;
+-    uint32_t f_dst_x;
+-    uint32_t f_dst_y;
+-    wuffs_base__pixel_swizzler f_swizzler;
++    bool f_ignore_checksum;
++    uint64_t f_dsize_have;
++    uint64_t f_ssize_have;
+ 
+-    uint32_t p_decode_image_config[1];
+-    uint32_t p_do_decode_image_config[1];
+-    uint32_t p_decode_frame_config[1];
+-    uint32_t p_do_decode_frame_config[1];
+-    uint32_t p_decode_frame[1];
+-    uint32_t p_do_decode_frame[1];
++    uint32_t p_transform_io;
++    uint32_t p_do_transform_io;
+   } private_impl;
+ 
++  struct {
++    wuffs_crc32__ieee_hasher f_crc32;
++    wuffs_lzma__decoder f_lzma;
++
++    struct {
++      uint64_t scratch;
++    } s_do_transform_io;
++  } private_data;
++
+ #ifdef __cplusplus
+ #if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
+-  using unique_ptr = std::unique_ptr<wuffs_netpbm__decoder, wuffs_unique_ptr_deleter>;
++  using unique_ptr = std::unique_ptr<wuffs_lzip__decoder, wuffs_unique_ptr_deleter>;
+ 
+   // On failure, the alloc_etc functions return nullptr. They don't throw.
+ 
+   static inline unique_ptr
+   alloc() {
+-    return unique_ptr(wuffs_netpbm__decoder__alloc());
++    return unique_ptr(wuffs_lzip__decoder__alloc());
+   }
+ 
+-  static inline wuffs_base__image_decoder::unique_ptr
+-  alloc_as__wuffs_base__image_decoder() {
+-    return wuffs_base__image_decoder::unique_ptr(
+-        wuffs_netpbm__decoder__alloc_as__wuffs_base__image_decoder());
++  static inline wuffs_base__io_transformer::unique_ptr
++  alloc_as__wuffs_base__io_transformer() {
++    return wuffs_base__io_transformer::unique_ptr(
++        wuffs_lzip__decoder__alloc_as__wuffs_base__io_transformer());
+   }
+ #endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
+ 
+@@ -10400,10 +10943,10 @@ struct wuffs_netpbm__decoder__struct {
+   // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
+   // order to provide convenience methods. These forward on "this", so that you
+   // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
+-  wuffs_netpbm__decoder__struct() = delete;
+-  wuffs_netpbm__decoder__struct(const wuffs_netpbm__decoder__struct&) = delete;
+-  wuffs_netpbm__decoder__struct& operator=(
+-      const wuffs_netpbm__decoder__struct&) = delete;
++  wuffs_lzip__decoder__struct() = delete;
++  wuffs_lzip__decoder__struct(const wuffs_lzip__decoder__struct&) = delete;
++  wuffs_lzip__decoder__struct& operator=(
++      const wuffs_lzip__decoder__struct&) = delete;
+ #endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
+ 
+ #if !defined(WUFFS_IMPLEMENTATION)
+@@ -10423,128 +10966,327 @@ struct wuffs_netpbm__decoder__struct {
+       size_t sizeof_star_self,
+       uint64_t wuffs_version,
+       uint32_t options) {
+-    return wuffs_netpbm__decoder__initialize(
++    return wuffs_lzip__decoder__initialize(
+         this, sizeof_star_self, wuffs_version, options);
+   }
+ 
+-  inline wuffs_base__image_decoder*
+-  upcast_as__wuffs_base__image_decoder() {
+-    return (wuffs_base__image_decoder*)this;
++  inline wuffs_base__io_transformer*
++  upcast_as__wuffs_base__io_transformer() {
++    return (wuffs_base__io_transformer*)this;
+   }
+ 
+   inline uint64_t
+   get_quirk(
+       uint32_t a_key) const {
+-    return wuffs_netpbm__decoder__get_quirk(this, a_key);
++    return wuffs_lzip__decoder__get_quirk(this, a_key);
+   }
+ 
+   inline wuffs_base__status
+   set_quirk(
+       uint32_t a_key,
+       uint64_t a_value) {
+-    return wuffs_netpbm__decoder__set_quirk(this, a_key, a_value);
++    return wuffs_lzip__decoder__set_quirk(this, a_key, a_value);
+   }
+ 
+-  inline wuffs_base__status
+-  decode_image_config(
+-      wuffs_base__image_config* a_dst,
+-      wuffs_base__io_buffer* a_src) {
+-    return wuffs_netpbm__decoder__decode_image_config(this, a_dst, a_src);
++  inline wuffs_base__optional_u63
++  dst_history_retain_length() const {
++    return wuffs_lzip__decoder__dst_history_retain_length(this);
+   }
+ 
+-  inline wuffs_base__status
+-  decode_frame_config(
+-      wuffs_base__frame_config* a_dst,
+-      wuffs_base__io_buffer* a_src) {
+-    return wuffs_netpbm__decoder__decode_frame_config(this, a_dst, a_src);
++  inline wuffs_base__range_ii_u64
++  workbuf_len() const {
++    return wuffs_lzip__decoder__workbuf_len(this);
+   }
+ 
+   inline wuffs_base__status
+-  decode_frame(
+-      wuffs_base__pixel_buffer* a_dst,
++  transform_io(
++      wuffs_base__io_buffer* a_dst,
+       wuffs_base__io_buffer* a_src,
+-      wuffs_base__pixel_blend a_blend,
+-      wuffs_base__slice_u8 a_workbuf,
+-      wuffs_base__decode_frame_options* a_opts) {
+-    return wuffs_netpbm__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
+-  }
+-
+-  inline wuffs_base__rect_ie_u32
+-  frame_dirty_rect() const {
+-    return wuffs_netpbm__decoder__frame_dirty_rect(this);
++      wuffs_base__slice_u8 a_workbuf) {
++    return wuffs_lzip__decoder__transform_io(this, a_dst, a_src, a_workbuf);
+   }
+ 
+-  inline uint32_t
+-  num_animation_loops() const {
+-    return wuffs_netpbm__decoder__num_animation_loops(this);
+-  }
++#endif  // __cplusplus
++};  // struct wuffs_lzip__decoder__struct
+ 
+-  inline uint64_t
+-  num_decoded_frame_configs() const {
+-    return wuffs_netpbm__decoder__num_decoded_frame_configs(this);
+-  }
++#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
+ 
+-  inline uint64_t
+-  num_decoded_frames() const {
+-    return wuffs_netpbm__decoder__num_decoded_frames(this);
+-  }
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZIP) || defined(WUFFS_NONMONOLITHIC)
+ 
+-  inline wuffs_base__status
+-  restart_frame(
+-      uint64_t a_index,
+-      uint64_t a_io_position) {
+-    return wuffs_netpbm__decoder__restart_frame(this, a_index, a_io_position);
+-  }
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW) || defined(WUFFS_NONMONOLITHIC)
+ 
+-  inline wuffs_base__empty_struct
+-  set_report_metadata(
+-      uint32_t a_fourcc,
+-      bool a_report) {
+-    return wuffs_netpbm__decoder__set_report_metadata(this, a_fourcc, a_report);
+-  }
++// ---------------- Status Codes
+ 
+-  inline wuffs_base__status
+-  tell_me_more(
+-      wuffs_base__io_buffer* a_dst,
+-      wuffs_base__more_information* a_minfo,
+-      wuffs_base__io_buffer* a_src) {
+-    return wuffs_netpbm__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
+-  }
++extern const char wuffs_lzw__error__bad_code[];
++extern const char wuffs_lzw__error__truncated_input[];
+ 
+-  inline uint64_t
+-  history_retain_length() const {
+-    return wuffs_netpbm__decoder__history_retain_length(this);
+-  }
++// ---------------- Public Consts
+ 
+-  inline wuffs_base__range_ii_u64
+-  workbuf_len() const {
+-    return wuffs_netpbm__decoder__workbuf_len(this);
+-  }
++#define WUFFS_LZW__DECODER_DST_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0u
+ 
+-#endif  // __cplusplus
+-};  // struct wuffs_netpbm__decoder__struct
++#define WUFFS_LZW__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
+ 
+-#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
++#define WUFFS_LZW__QUIRK_LITERAL_WIDTH_PLUS_ONE 1348378624u
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM) || defined(WUFFS_NONMONOLITHIC)
++// ---------------- Struct Declarations
+ 
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE) || defined(WUFFS_NONMONOLITHIC)
++typedef struct wuffs_lzw__decoder__struct wuffs_lzw__decoder;
+ 
+-// ---------------- Status Codes
++#ifdef __cplusplus
++extern "C" {
++#endif
+ 
+-extern const char wuffs_nie__error__bad_header[];
+-extern const char wuffs_nie__error__truncated_input[];
+-extern const char wuffs_nie__error__unsupported_nie_file[];
++// ---------------- Public Initializer Prototypes
+ 
+-// ---------------- Public Consts
++// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
++// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
++//
++// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
++// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_lzw__decoder__initialize(
++    wuffs_lzw__decoder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options);
++
++size_t
++sizeof__wuffs_lzw__decoder(void);
++
++// ---------------- Allocs
++
++// These functions allocate and initialize Wuffs structs. They return NULL if
++// memory allocation fails. If they return non-NULL, there is no need to call
++// wuffs_foo__bar__initialize, but the caller is responsible for eventually
++// calling free on the returned pointer. That pointer is effectively a C++
++// std::unique_ptr<T, wuffs_unique_ptr_deleter>.
++
++wuffs_lzw__decoder*
++wuffs_lzw__decoder__alloc(void);
++
++static inline wuffs_base__io_transformer*
++wuffs_lzw__decoder__alloc_as__wuffs_base__io_transformer(void) {
++  return (wuffs_base__io_transformer*)(wuffs_lzw__decoder__alloc());
++}
++
++// ---------------- Upcasts
++
++static inline wuffs_base__io_transformer*
++wuffs_lzw__decoder__upcast_as__wuffs_base__io_transformer(
++    wuffs_lzw__decoder* p) {
++  return (wuffs_base__io_transformer*)p;
++}
++
++// ---------------- Public Function Prototypes
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_lzw__decoder__get_quirk(
++    const wuffs_lzw__decoder* self,
++    uint32_t a_key);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_lzw__decoder__set_quirk(
++    wuffs_lzw__decoder* self,
++    uint32_t a_key,
++    uint64_t a_value);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
++wuffs_lzw__decoder__dst_history_retain_length(
++    const wuffs_lzw__decoder* self);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_lzw__decoder__workbuf_len(
++    const wuffs_lzw__decoder* self);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_lzw__decoder__transform_io(
++    wuffs_lzw__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__slice_u8
++wuffs_lzw__decoder__flush(
++    wuffs_lzw__decoder* self);
++
++#ifdef __cplusplus
++}  // extern "C"
++#endif
++
++// ---------------- Struct Definitions
++
++// These structs' fields, and the sizeof them, are private implementation
++// details that aren't guaranteed to be stable across Wuffs versions.
++//
++// See https://en.wikipedia.org/wiki/Opaque_pointer#C
++
++#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
++
++struct wuffs_lzw__decoder__struct {
++  // Do not access the private_impl's or private_data's fields directly. There
++  // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
++  // the wuffs_foo__bar__baz functions.
++  //
++  // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
++  // can be stack allocated when WUFFS_IMPLEMENTATION is defined.
++
++  struct {
++    uint32_t magic;
++    uint32_t active_coroutine;
++    wuffs_base__vtable vtable_for__wuffs_base__io_transformer;
++    wuffs_base__vtable null_vtable;
++
++    uint32_t f_pending_literal_width_plus_one;
++    uint32_t f_literal_width;
++    uint32_t f_clear_code;
++    uint32_t f_end_code;
++    uint32_t f_save_code;
++    uint32_t f_prev_code;
++    uint32_t f_width;
++    uint32_t f_bits;
++    uint32_t f_n_bits;
++    uint32_t f_output_ri;
++    uint32_t f_output_wi;
++    uint32_t f_read_from_return_value;
++    uint16_t f_prefixes[4096];
++
++    uint32_t p_transform_io;
++    uint32_t p_write_to;
++  } private_impl;
++
++  struct {
++    uint8_t f_suffixes[4096][8];
++    uint16_t f_lm1s[4096];
++    uint8_t f_output[8199];
++  } private_data;
++
++#ifdef __cplusplus
++#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
++  using unique_ptr = std::unique_ptr<wuffs_lzw__decoder, wuffs_unique_ptr_deleter>;
++
++  // On failure, the alloc_etc functions return nullptr. They don't throw.
++
++  static inline unique_ptr
++  alloc() {
++    return unique_ptr(wuffs_lzw__decoder__alloc());
++  }
++
++  static inline wuffs_base__io_transformer::unique_ptr
++  alloc_as__wuffs_base__io_transformer() {
++    return wuffs_base__io_transformer::unique_ptr(
++        wuffs_lzw__decoder__alloc_as__wuffs_base__io_transformer());
++  }
++#endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
++
++#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
++  // Disallow constructing or copying an object via standard C++ mechanisms,
++  // e.g. the "new" operator, as this struct is intentionally opaque. Its total
++  // size and field layout is not part of the public, stable, memory-safe API.
++  // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
++  // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
++  // their first argument) rather than tweaking bar.private_impl.qux fields.
++  //
++  // In C, we can just leave wuffs_foo__bar as an incomplete type (unless
++  // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
++  // order to provide convenience methods. These forward on "this", so that you
++  // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
++  wuffs_lzw__decoder__struct() = delete;
++  wuffs_lzw__decoder__struct(const wuffs_lzw__decoder__struct&) = delete;
++  wuffs_lzw__decoder__struct& operator=(
++      const wuffs_lzw__decoder__struct&) = delete;
++#endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
++
++#if !defined(WUFFS_IMPLEMENTATION)
++  // As above, the size of the struct is not part of the public API, and unless
++  // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
++  // allocated, not stack allocated. Its size is not intended to be known at
++  // compile time, but it is unfortunately divulged as a side effect of
++  // defining C++ convenience methods. Use "sizeof__T()", calling the function,
++  // instead of "sizeof T", invoking the operator. To make the two values
++  // different, so that passing the latter will be rejected by the initialize
++  // function, we add an arbitrary amount of dead weight.
++  uint8_t dead_weight[123000000];  // 123 MB.
++#endif  // !defined(WUFFS_IMPLEMENTATION)
++
++  inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++  initialize(
++      size_t sizeof_star_self,
++      uint64_t wuffs_version,
++      uint32_t options) {
++    return wuffs_lzw__decoder__initialize(
++        this, sizeof_star_self, wuffs_version, options);
++  }
++
++  inline wuffs_base__io_transformer*
++  upcast_as__wuffs_base__io_transformer() {
++    return (wuffs_base__io_transformer*)this;
++  }
++
++  inline uint64_t
++  get_quirk(
++      uint32_t a_key) const {
++    return wuffs_lzw__decoder__get_quirk(this, a_key);
++  }
++
++  inline wuffs_base__status
++  set_quirk(
++      uint32_t a_key,
++      uint64_t a_value) {
++    return wuffs_lzw__decoder__set_quirk(this, a_key, a_value);
++  }
++
++  inline wuffs_base__optional_u63
++  dst_history_retain_length() const {
++    return wuffs_lzw__decoder__dst_history_retain_length(this);
++  }
++
++  inline wuffs_base__range_ii_u64
++  workbuf_len() const {
++    return wuffs_lzw__decoder__workbuf_len(this);
++  }
++
++  inline wuffs_base__status
++  transform_io(
++      wuffs_base__io_buffer* a_dst,
++      wuffs_base__io_buffer* a_src,
++      wuffs_base__slice_u8 a_workbuf) {
++    return wuffs_lzw__decoder__transform_io(this, a_dst, a_src, a_workbuf);
++  }
++
++  inline wuffs_base__slice_u8
++  flush() {
++    return wuffs_lzw__decoder__flush(this);
++  }
++
++#endif  // __cplusplus
++};  // struct wuffs_lzw__decoder__struct
++
++#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
++
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW) || defined(WUFFS_NONMONOLITHIC)
++
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM) || defined(WUFFS_NONMONOLITHIC)
++
++// ---------------- Status Codes
++
++extern const char wuffs_netpbm__error__bad_header[];
++extern const char wuffs_netpbm__error__truncated_input[];
++extern const char wuffs_netpbm__error__unsupported_netpbm_file[];
+ 
+-#define WUFFS_NIE__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
++// ---------------- Public Consts
+ 
+-#define WUFFS_NIE__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
++#define WUFFS_NETPBM__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
+ 
+ // ---------------- Struct Declarations
+ 
+-typedef struct wuffs_nie__decoder__struct wuffs_nie__decoder;
++typedef struct wuffs_netpbm__decoder__struct wuffs_netpbm__decoder;
+ 
+ #ifdef __cplusplus
+ extern "C" {
+@@ -10559,14 +11301,14 @@ extern "C" {
+ // Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
+ 
+ wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_nie__decoder__initialize(
+-    wuffs_nie__decoder* self,
++wuffs_netpbm__decoder__initialize(
++    wuffs_netpbm__decoder* self,
+     size_t sizeof_star_self,
+     uint64_t wuffs_version,
+     uint32_t options);
+ 
+ size_t
+-sizeof__wuffs_nie__decoder(void);
++sizeof__wuffs_netpbm__decoder(void);
+ 
+ // ---------------- Allocs
+ 
+@@ -10576,19 +11318,19 @@ sizeof__wuffs_nie__decoder(void);
+ // calling free on the returned pointer. That pointer is effectively a C++
+ // std::unique_ptr<T, wuffs_unique_ptr_deleter>.
+ 
+-wuffs_nie__decoder*
+-wuffs_nie__decoder__alloc(void);
++wuffs_netpbm__decoder*
++wuffs_netpbm__decoder__alloc(void);
+ 
+ static inline wuffs_base__image_decoder*
+-wuffs_nie__decoder__alloc_as__wuffs_base__image_decoder(void) {
+-  return (wuffs_base__image_decoder*)(wuffs_nie__decoder__alloc());
++wuffs_netpbm__decoder__alloc_as__wuffs_base__image_decoder(void) {
++  return (wuffs_base__image_decoder*)(wuffs_netpbm__decoder__alloc());
+ }
+ 
+ // ---------------- Upcasts
+ 
+ static inline wuffs_base__image_decoder*
+-wuffs_nie__decoder__upcast_as__wuffs_base__image_decoder(
+-    wuffs_nie__decoder* p) {
++wuffs_netpbm__decoder__upcast_as__wuffs_base__image_decoder(
++    wuffs_netpbm__decoder* p) {
+   return (wuffs_base__image_decoder*)p;
+ }
+ 
+@@ -10596,35 +11338,35 @@ wuffs_nie__decoder__upcast_as__wuffs_base__image_decoder(
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_nie__decoder__get_quirk(
+-    const wuffs_nie__decoder* self,
++wuffs_netpbm__decoder__get_quirk(
++    const wuffs_netpbm__decoder* self,
+     uint32_t a_key);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_nie__decoder__set_quirk(
+-    wuffs_nie__decoder* self,
++wuffs_netpbm__decoder__set_quirk(
++    wuffs_netpbm__decoder* self,
+     uint32_t a_key,
+     uint64_t a_value);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_nie__decoder__decode_image_config(
+-    wuffs_nie__decoder* self,
++wuffs_netpbm__decoder__decode_image_config(
++    wuffs_netpbm__decoder* self,
+     wuffs_base__image_config* a_dst,
+     wuffs_base__io_buffer* a_src);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_nie__decoder__decode_frame_config(
+-    wuffs_nie__decoder* self,
++wuffs_netpbm__decoder__decode_frame_config(
++    wuffs_netpbm__decoder* self,
+     wuffs_base__frame_config* a_dst,
+     wuffs_base__io_buffer* a_src);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_nie__decoder__decode_frame(
+-    wuffs_nie__decoder* self,
++wuffs_netpbm__decoder__decode_frame(
++    wuffs_netpbm__decoder* self,
+     wuffs_base__pixel_buffer* a_dst,
+     wuffs_base__io_buffer* a_src,
+     wuffs_base__pixel_blend a_blend,
+@@ -10633,55 +11375,50 @@ wuffs_nie__decoder__decode_frame(
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
+-wuffs_nie__decoder__frame_dirty_rect(
+-    const wuffs_nie__decoder* self);
++wuffs_netpbm__decoder__frame_dirty_rect(
++    const wuffs_netpbm__decoder* self);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_nie__decoder__num_animation_loops(
+-    const wuffs_nie__decoder* self);
++wuffs_netpbm__decoder__num_animation_loops(
++    const wuffs_netpbm__decoder* self);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_nie__decoder__num_decoded_frame_configs(
+-    const wuffs_nie__decoder* self);
++wuffs_netpbm__decoder__num_decoded_frame_configs(
++    const wuffs_netpbm__decoder* self);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_nie__decoder__num_decoded_frames(
+-    const wuffs_nie__decoder* self);
++wuffs_netpbm__decoder__num_decoded_frames(
++    const wuffs_netpbm__decoder* self);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_nie__decoder__restart_frame(
+-    wuffs_nie__decoder* self,
++wuffs_netpbm__decoder__restart_frame(
++    wuffs_netpbm__decoder* self,
+     uint64_t a_index,
+     uint64_t a_io_position);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_nie__decoder__set_report_metadata(
+-    wuffs_nie__decoder* self,
++wuffs_netpbm__decoder__set_report_metadata(
++    wuffs_netpbm__decoder* self,
+     uint32_t a_fourcc,
+     bool a_report);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_nie__decoder__tell_me_more(
+-    wuffs_nie__decoder* self,
++wuffs_netpbm__decoder__tell_me_more(
++    wuffs_netpbm__decoder* self,
+     wuffs_base__io_buffer* a_dst,
+     wuffs_base__more_information* a_minfo,
+     wuffs_base__io_buffer* a_src);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_nie__decoder__history_retain_length(
+-    const wuffs_nie__decoder* self);
+-
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_nie__decoder__workbuf_len(
+-    const wuffs_nie__decoder* self);
++wuffs_netpbm__decoder__workbuf_len(
++    const wuffs_netpbm__decoder* self);
+ 
+ #ifdef __cplusplus
+ }  // extern "C"
+@@ -10696,7 +11433,7 @@ wuffs_nie__decoder__workbuf_len(
+ 
+ #if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
+ 
+-struct wuffs_nie__decoder__struct {
++struct wuffs_netpbm__decoder__struct {
+   // Do not access the private_impl's or private_data's fields directly. There
+   // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
+   // the wuffs_foo__bar__baz functions.
+@@ -10713,40 +11450,36 @@ struct wuffs_nie__decoder__struct {
+     uint32_t f_pixfmt;
+     uint32_t f_width;
+     uint32_t f_height;
++    uint32_t f_max_value;
+     uint8_t f_call_sequence;
++    uint64_t f_frame_config_io_position;
+     uint32_t f_dst_x;
+     uint32_t f_dst_y;
+     wuffs_base__pixel_swizzler f_swizzler;
+ 
+-    uint32_t p_decode_image_config[1];
+-    uint32_t p_do_decode_image_config[1];
+-    uint32_t p_decode_frame_config[1];
+-    uint32_t p_do_decode_frame_config[1];
+-    uint32_t p_decode_frame[1];
+-    uint32_t p_do_decode_frame[1];
++    uint32_t p_decode_image_config;
++    uint32_t p_do_decode_image_config;
++    uint32_t p_decode_frame_config;
++    uint32_t p_do_decode_frame_config;
++    uint32_t p_decode_frame;
++    uint32_t p_do_decode_frame;
+   } private_impl;
+ 
+-  struct {
+-    struct {
+-      uint64_t scratch;
+-    } s_do_decode_image_config[1];
+-  } private_data;
+-
+ #ifdef __cplusplus
+ #if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
+-  using unique_ptr = std::unique_ptr<wuffs_nie__decoder, wuffs_unique_ptr_deleter>;
++  using unique_ptr = std::unique_ptr<wuffs_netpbm__decoder, wuffs_unique_ptr_deleter>;
+ 
+   // On failure, the alloc_etc functions return nullptr. They don't throw.
+ 
+   static inline unique_ptr
+   alloc() {
+-    return unique_ptr(wuffs_nie__decoder__alloc());
++    return unique_ptr(wuffs_netpbm__decoder__alloc());
+   }
+ 
+   static inline wuffs_base__image_decoder::unique_ptr
+   alloc_as__wuffs_base__image_decoder() {
+     return wuffs_base__image_decoder::unique_ptr(
+-        wuffs_nie__decoder__alloc_as__wuffs_base__image_decoder());
++        wuffs_netpbm__decoder__alloc_as__wuffs_base__image_decoder());
+   }
+ #endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
+ 
+@@ -10762,10 +11495,10 @@ struct wuffs_nie__decoder__struct {
+   // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
+   // order to provide convenience methods. These forward on "this", so that you
+   // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
+-  wuffs_nie__decoder__struct() = delete;
+-  wuffs_nie__decoder__struct(const wuffs_nie__decoder__struct&) = delete;
+-  wuffs_nie__decoder__struct& operator=(
+-      const wuffs_nie__decoder__struct&) = delete;
++  wuffs_netpbm__decoder__struct() = delete;
++  wuffs_netpbm__decoder__struct(const wuffs_netpbm__decoder__struct&) = delete;
++  wuffs_netpbm__decoder__struct& operator=(
++      const wuffs_netpbm__decoder__struct&) = delete;
+ #endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
+ 
+ #if !defined(WUFFS_IMPLEMENTATION)
+@@ -10785,7 +11518,7 @@ struct wuffs_nie__decoder__struct {
+       size_t sizeof_star_self,
+       uint64_t wuffs_version,
+       uint32_t options) {
+-    return wuffs_nie__decoder__initialize(
++    return wuffs_netpbm__decoder__initialize(
+         this, sizeof_star_self, wuffs_version, options);
+   }
+ 
+@@ -10797,28 +11530,28 @@ struct wuffs_nie__decoder__struct {
+   inline uint64_t
+   get_quirk(
+       uint32_t a_key) const {
+-    return wuffs_nie__decoder__get_quirk(this, a_key);
++    return wuffs_netpbm__decoder__get_quirk(this, a_key);
+   }
+ 
+   inline wuffs_base__status
+   set_quirk(
+       uint32_t a_key,
+       uint64_t a_value) {
+-    return wuffs_nie__decoder__set_quirk(this, a_key, a_value);
++    return wuffs_netpbm__decoder__set_quirk(this, a_key, a_value);
+   }
+ 
+   inline wuffs_base__status
+   decode_image_config(
+       wuffs_base__image_config* a_dst,
+       wuffs_base__io_buffer* a_src) {
+-    return wuffs_nie__decoder__decode_image_config(this, a_dst, a_src);
++    return wuffs_netpbm__decoder__decode_image_config(this, a_dst, a_src);
+   }
+ 
+   inline wuffs_base__status
+   decode_frame_config(
+       wuffs_base__frame_config* a_dst,
+       wuffs_base__io_buffer* a_src) {
+-    return wuffs_nie__decoder__decode_frame_config(this, a_dst, a_src);
++    return wuffs_netpbm__decoder__decode_frame_config(this, a_dst, a_src);
+   }
+ 
+   inline wuffs_base__status
+@@ -10828,41 +11561,41 @@ struct wuffs_nie__decoder__struct {
+       wuffs_base__pixel_blend a_blend,
+       wuffs_base__slice_u8 a_workbuf,
+       wuffs_base__decode_frame_options* a_opts) {
+-    return wuffs_nie__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
++    return wuffs_netpbm__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
+   }
+ 
+   inline wuffs_base__rect_ie_u32
+   frame_dirty_rect() const {
+-    return wuffs_nie__decoder__frame_dirty_rect(this);
++    return wuffs_netpbm__decoder__frame_dirty_rect(this);
+   }
+ 
+   inline uint32_t
+   num_animation_loops() const {
+-    return wuffs_nie__decoder__num_animation_loops(this);
++    return wuffs_netpbm__decoder__num_animation_loops(this);
+   }
+ 
+   inline uint64_t
+   num_decoded_frame_configs() const {
+-    return wuffs_nie__decoder__num_decoded_frame_configs(this);
++    return wuffs_netpbm__decoder__num_decoded_frame_configs(this);
+   }
+ 
+   inline uint64_t
+   num_decoded_frames() const {
+-    return wuffs_nie__decoder__num_decoded_frames(this);
++    return wuffs_netpbm__decoder__num_decoded_frames(this);
+   }
+ 
+   inline wuffs_base__status
+   restart_frame(
+       uint64_t a_index,
+       uint64_t a_io_position) {
+-    return wuffs_nie__decoder__restart_frame(this, a_index, a_io_position);
++    return wuffs_netpbm__decoder__restart_frame(this, a_index, a_io_position);
+   }
+ 
+   inline wuffs_base__empty_struct
+   set_report_metadata(
+       uint32_t a_fourcc,
+       bool a_report) {
+-    return wuffs_nie__decoder__set_report_metadata(this, a_fourcc, a_report);
++    return wuffs_netpbm__decoder__set_report_metadata(this, a_fourcc, a_report);
+   }
+ 
+   inline wuffs_base__status
+@@ -10870,49 +11603,36 @@ struct wuffs_nie__decoder__struct {
+       wuffs_base__io_buffer* a_dst,
+       wuffs_base__more_information* a_minfo,
+       wuffs_base__io_buffer* a_src) {
+-    return wuffs_nie__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
+-  }
+-
+-  inline uint64_t
+-  history_retain_length() const {
+-    return wuffs_nie__decoder__history_retain_length(this);
++    return wuffs_netpbm__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
+   }
+ 
+   inline wuffs_base__range_ii_u64
+   workbuf_len() const {
+-    return wuffs_nie__decoder__workbuf_len(this);
++    return wuffs_netpbm__decoder__workbuf_len(this);
+   }
+ 
+ #endif  // __cplusplus
+-};  // struct wuffs_nie__decoder__struct
++};  // struct wuffs_netpbm__decoder__struct
+ 
+ #endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE) || defined(WUFFS_NONMONOLITHIC)
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM) || defined(WUFFS_NONMONOLITHIC)
+ 
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ZLIB) || defined(WUFFS_NONMONOLITHIC)
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE) || defined(WUFFS_NONMONOLITHIC)
+ 
+ // ---------------- Status Codes
+ 
+-extern const char wuffs_zlib__note__dictionary_required[];
+-extern const char wuffs_zlib__error__bad_checksum[];
+-extern const char wuffs_zlib__error__bad_compression_method[];
+-extern const char wuffs_zlib__error__bad_compression_window_size[];
+-extern const char wuffs_zlib__error__bad_parity_check[];
+-extern const char wuffs_zlib__error__incorrect_dictionary[];
+-extern const char wuffs_zlib__error__truncated_input[];
++extern const char wuffs_nie__error__bad_header[];
++extern const char wuffs_nie__error__truncated_input[];
++extern const char wuffs_nie__error__unsupported_nie_file[];
+ 
+ // ---------------- Public Consts
+ 
+-#define WUFFS_ZLIB__QUIRK_JUST_RAW_DEFLATE 2113790976
+-
+-#define WUFFS_ZLIB__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
+-
+-#define WUFFS_ZLIB__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 1
++#define WUFFS_NIE__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
+ 
+ // ---------------- Struct Declarations
+ 
+-typedef struct wuffs_zlib__decoder__struct wuffs_zlib__decoder;
++typedef struct wuffs_nie__decoder__struct wuffs_nie__decoder;
+ 
+ #ifdef __cplusplus
+ extern "C" {
+@@ -10927,14 +11647,14 @@ extern "C" {
+ // Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
+ 
+ wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_zlib__decoder__initialize(
+-    wuffs_zlib__decoder* self,
++wuffs_nie__decoder__initialize(
++    wuffs_nie__decoder* self,
+     size_t sizeof_star_self,
+     uint64_t wuffs_version,
+     uint32_t options);
+ 
+ size_t
+-sizeof__wuffs_zlib__decoder(void);
++sizeof__wuffs_nie__decoder(void);
+ 
+ // ---------------- Allocs
+ 
+@@ -10944,65 +11664,107 @@ sizeof__wuffs_zlib__decoder(void);
+ // calling free on the returned pointer. That pointer is effectively a C++
+ // std::unique_ptr<T, wuffs_unique_ptr_deleter>.
+ 
+-wuffs_zlib__decoder*
+-wuffs_zlib__decoder__alloc(void);
++wuffs_nie__decoder*
++wuffs_nie__decoder__alloc(void);
+ 
+-static inline wuffs_base__io_transformer*
+-wuffs_zlib__decoder__alloc_as__wuffs_base__io_transformer(void) {
+-  return (wuffs_base__io_transformer*)(wuffs_zlib__decoder__alloc());
++static inline wuffs_base__image_decoder*
++wuffs_nie__decoder__alloc_as__wuffs_base__image_decoder(void) {
++  return (wuffs_base__image_decoder*)(wuffs_nie__decoder__alloc());
+ }
+ 
+ // ---------------- Upcasts
+ 
+-static inline wuffs_base__io_transformer*
+-wuffs_zlib__decoder__upcast_as__wuffs_base__io_transformer(
+-    wuffs_zlib__decoder* p) {
+-  return (wuffs_base__io_transformer*)p;
++static inline wuffs_base__image_decoder*
++wuffs_nie__decoder__upcast_as__wuffs_base__image_decoder(
++    wuffs_nie__decoder* p) {
++  return (wuffs_base__image_decoder*)p;
+ }
+ 
+ // ---------------- Public Function Prototypes
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_zlib__decoder__dictionary_id(
+-    const wuffs_zlib__decoder* self);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_zlib__decoder__add_dictionary(
+-    wuffs_zlib__decoder* self,
+-    wuffs_base__slice_u8 a_dict);
+-
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_zlib__decoder__get_quirk(
+-    const wuffs_zlib__decoder* self,
++wuffs_nie__decoder__get_quirk(
++    const wuffs_nie__decoder* self,
+     uint32_t a_key);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_zlib__decoder__set_quirk(
+-    wuffs_zlib__decoder* self,
++wuffs_nie__decoder__set_quirk(
++    wuffs_nie__decoder* self,
+     uint32_t a_key,
+     uint64_t a_value);
+ 
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_nie__decoder__decode_image_config(
++    wuffs_nie__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_nie__decoder__decode_frame_config(
++    wuffs_nie__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_nie__decoder__decode_frame(
++    wuffs_nie__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
++wuffs_nie__decoder__frame_dirty_rect(
++    const wuffs_nie__decoder* self);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_nie__decoder__num_animation_loops(
++    const wuffs_nie__decoder* self);
++
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_zlib__decoder__history_retain_length(
+-    const wuffs_zlib__decoder* self);
++wuffs_nie__decoder__num_decoded_frame_configs(
++    const wuffs_nie__decoder* self);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_zlib__decoder__workbuf_len(
+-    const wuffs_zlib__decoder* self);
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_nie__decoder__num_decoded_frames(
++    const wuffs_nie__decoder* self);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_zlib__decoder__transform_io(
+-    wuffs_zlib__decoder* self,
++wuffs_nie__decoder__restart_frame(
++    wuffs_nie__decoder* self,
++    uint64_t a_index,
++    uint64_t a_io_position);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_nie__decoder__set_report_metadata(
++    wuffs_nie__decoder* self,
++    uint32_t a_fourcc,
++    bool a_report);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_nie__decoder__tell_me_more(
++    wuffs_nie__decoder* self,
+     wuffs_base__io_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__slice_u8 a_workbuf);
++    wuffs_base__more_information* a_minfo,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_nie__decoder__workbuf_len(
++    const wuffs_nie__decoder* self);
+ 
+ #ifdef __cplusplus
+ }  // extern "C"
+@@ -11017,7 +11779,7 @@ wuffs_zlib__decoder__transform_io(
+ 
+ #if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
+ 
+-struct wuffs_zlib__decoder__struct {
++struct wuffs_nie__decoder__struct {
+   // Do not access the private_impl's or private_data's fields directly. There
+   // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
+   // the wuffs_foo__bar__baz functions.
+@@ -11028,20 +11790,336 @@ struct wuffs_zlib__decoder__struct {
+   struct {
+     uint32_t magic;
+     uint32_t active_coroutine;
+-    wuffs_base__vtable vtable_for__wuffs_base__io_transformer;
++    wuffs_base__vtable vtable_for__wuffs_base__image_decoder;
+     wuffs_base__vtable null_vtable;
+ 
+-    bool f_bad_call_sequence;
+-    bool f_header_complete;
++    uint32_t f_pixfmt;
++    uint32_t f_width;
++    uint32_t f_height;
++    uint8_t f_call_sequence;
++    uint32_t f_dst_x;
++    uint32_t f_dst_y;
++    wuffs_base__pixel_swizzler f_swizzler;
++
++    uint32_t p_decode_image_config;
++    uint32_t p_do_decode_image_config;
++    uint32_t p_decode_frame_config;
++    uint32_t p_do_decode_frame_config;
++    uint32_t p_decode_frame;
++    uint32_t p_do_decode_frame;
++  } private_impl;
++
++  struct {
++    struct {
++      uint64_t scratch;
++    } s_do_decode_image_config;
++  } private_data;
++
++#ifdef __cplusplus
++#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
++  using unique_ptr = std::unique_ptr<wuffs_nie__decoder, wuffs_unique_ptr_deleter>;
++
++  // On failure, the alloc_etc functions return nullptr. They don't throw.
++
++  static inline unique_ptr
++  alloc() {
++    return unique_ptr(wuffs_nie__decoder__alloc());
++  }
++
++  static inline wuffs_base__image_decoder::unique_ptr
++  alloc_as__wuffs_base__image_decoder() {
++    return wuffs_base__image_decoder::unique_ptr(
++        wuffs_nie__decoder__alloc_as__wuffs_base__image_decoder());
++  }
++#endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
++
++#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
++  // Disallow constructing or copying an object via standard C++ mechanisms,
++  // e.g. the "new" operator, as this struct is intentionally opaque. Its total
++  // size and field layout is not part of the public, stable, memory-safe API.
++  // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
++  // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
++  // their first argument) rather than tweaking bar.private_impl.qux fields.
++  //
++  // In C, we can just leave wuffs_foo__bar as an incomplete type (unless
++  // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
++  // order to provide convenience methods. These forward on "this", so that you
++  // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
++  wuffs_nie__decoder__struct() = delete;
++  wuffs_nie__decoder__struct(const wuffs_nie__decoder__struct&) = delete;
++  wuffs_nie__decoder__struct& operator=(
++      const wuffs_nie__decoder__struct&) = delete;
++#endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
++
++#if !defined(WUFFS_IMPLEMENTATION)
++  // As above, the size of the struct is not part of the public API, and unless
++  // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
++  // allocated, not stack allocated. Its size is not intended to be known at
++  // compile time, but it is unfortunately divulged as a side effect of
++  // defining C++ convenience methods. Use "sizeof__T()", calling the function,
++  // instead of "sizeof T", invoking the operator. To make the two values
++  // different, so that passing the latter will be rejected by the initialize
++  // function, we add an arbitrary amount of dead weight.
++  uint8_t dead_weight[123000000];  // 123 MB.
++#endif  // !defined(WUFFS_IMPLEMENTATION)
++
++  inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++  initialize(
++      size_t sizeof_star_self,
++      uint64_t wuffs_version,
++      uint32_t options) {
++    return wuffs_nie__decoder__initialize(
++        this, sizeof_star_self, wuffs_version, options);
++  }
++
++  inline wuffs_base__image_decoder*
++  upcast_as__wuffs_base__image_decoder() {
++    return (wuffs_base__image_decoder*)this;
++  }
++
++  inline uint64_t
++  get_quirk(
++      uint32_t a_key) const {
++    return wuffs_nie__decoder__get_quirk(this, a_key);
++  }
++
++  inline wuffs_base__status
++  set_quirk(
++      uint32_t a_key,
++      uint64_t a_value) {
++    return wuffs_nie__decoder__set_quirk(this, a_key, a_value);
++  }
++
++  inline wuffs_base__status
++  decode_image_config(
++      wuffs_base__image_config* a_dst,
++      wuffs_base__io_buffer* a_src) {
++    return wuffs_nie__decoder__decode_image_config(this, a_dst, a_src);
++  }
++
++  inline wuffs_base__status
++  decode_frame_config(
++      wuffs_base__frame_config* a_dst,
++      wuffs_base__io_buffer* a_src) {
++    return wuffs_nie__decoder__decode_frame_config(this, a_dst, a_src);
++  }
++
++  inline wuffs_base__status
++  decode_frame(
++      wuffs_base__pixel_buffer* a_dst,
++      wuffs_base__io_buffer* a_src,
++      wuffs_base__pixel_blend a_blend,
++      wuffs_base__slice_u8 a_workbuf,
++      wuffs_base__decode_frame_options* a_opts) {
++    return wuffs_nie__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
++  }
++
++  inline wuffs_base__rect_ie_u32
++  frame_dirty_rect() const {
++    return wuffs_nie__decoder__frame_dirty_rect(this);
++  }
++
++  inline uint32_t
++  num_animation_loops() const {
++    return wuffs_nie__decoder__num_animation_loops(this);
++  }
++
++  inline uint64_t
++  num_decoded_frame_configs() const {
++    return wuffs_nie__decoder__num_decoded_frame_configs(this);
++  }
++
++  inline uint64_t
++  num_decoded_frames() const {
++    return wuffs_nie__decoder__num_decoded_frames(this);
++  }
++
++  inline wuffs_base__status
++  restart_frame(
++      uint64_t a_index,
++      uint64_t a_io_position) {
++    return wuffs_nie__decoder__restart_frame(this, a_index, a_io_position);
++  }
++
++  inline wuffs_base__empty_struct
++  set_report_metadata(
++      uint32_t a_fourcc,
++      bool a_report) {
++    return wuffs_nie__decoder__set_report_metadata(this, a_fourcc, a_report);
++  }
++
++  inline wuffs_base__status
++  tell_me_more(
++      wuffs_base__io_buffer* a_dst,
++      wuffs_base__more_information* a_minfo,
++      wuffs_base__io_buffer* a_src) {
++    return wuffs_nie__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
++  }
++
++  inline wuffs_base__range_ii_u64
++  workbuf_len() const {
++    return wuffs_nie__decoder__workbuf_len(this);
++  }
++
++#endif  // __cplusplus
++};  // struct wuffs_nie__decoder__struct
++
++#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
++
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE) || defined(WUFFS_NONMONOLITHIC)
++
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ZLIB) || defined(WUFFS_NONMONOLITHIC)
++
++// ---------------- Status Codes
++
++extern const char wuffs_zlib__note__dictionary_required[];
++extern const char wuffs_zlib__error__bad_checksum[];
++extern const char wuffs_zlib__error__bad_compression_method[];
++extern const char wuffs_zlib__error__bad_compression_window_size[];
++extern const char wuffs_zlib__error__bad_parity_check[];
++extern const char wuffs_zlib__error__incorrect_dictionary[];
++extern const char wuffs_zlib__error__truncated_input[];
++
++// ---------------- Public Consts
++
++#define WUFFS_ZLIB__QUIRK_JUST_RAW_DEFLATE 2113790976u
++
++#define WUFFS_ZLIB__DECODER_DST_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0u
++
++#define WUFFS_ZLIB__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 1u
++
++// ---------------- Struct Declarations
++
++typedef struct wuffs_zlib__decoder__struct wuffs_zlib__decoder;
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++// ---------------- Public Initializer Prototypes
++
++// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
++// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
++//
++// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
++// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_zlib__decoder__initialize(
++    wuffs_zlib__decoder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options);
++
++size_t
++sizeof__wuffs_zlib__decoder(void);
++
++// ---------------- Allocs
++
++// These functions allocate and initialize Wuffs structs. They return NULL if
++// memory allocation fails. If they return non-NULL, there is no need to call
++// wuffs_foo__bar__initialize, but the caller is responsible for eventually
++// calling free on the returned pointer. That pointer is effectively a C++
++// std::unique_ptr<T, wuffs_unique_ptr_deleter>.
++
++wuffs_zlib__decoder*
++wuffs_zlib__decoder__alloc(void);
++
++static inline wuffs_base__io_transformer*
++wuffs_zlib__decoder__alloc_as__wuffs_base__io_transformer(void) {
++  return (wuffs_base__io_transformer*)(wuffs_zlib__decoder__alloc());
++}
++
++// ---------------- Upcasts
++
++static inline wuffs_base__io_transformer*
++wuffs_zlib__decoder__upcast_as__wuffs_base__io_transformer(
++    wuffs_zlib__decoder* p) {
++  return (wuffs_base__io_transformer*)p;
++}
++
++// ---------------- Public Function Prototypes
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_zlib__decoder__dictionary_id(
++    const wuffs_zlib__decoder* self);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_zlib__decoder__add_dictionary(
++    wuffs_zlib__decoder* self,
++    wuffs_base__slice_u8 a_dict);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_zlib__decoder__get_quirk(
++    const wuffs_zlib__decoder* self,
++    uint32_t a_key);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_zlib__decoder__set_quirk(
++    wuffs_zlib__decoder* self,
++    uint32_t a_key,
++    uint64_t a_value);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
++wuffs_zlib__decoder__dst_history_retain_length(
++    const wuffs_zlib__decoder* self);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_zlib__decoder__workbuf_len(
++    const wuffs_zlib__decoder* self);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_zlib__decoder__transform_io(
++    wuffs_zlib__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf);
++
++#ifdef __cplusplus
++}  // extern "C"
++#endif
++
++// ---------------- Struct Definitions
++
++// These structs' fields, and the sizeof them, are private implementation
++// details that aren't guaranteed to be stable across Wuffs versions.
++//
++// See https://en.wikipedia.org/wiki/Opaque_pointer#C
++
++#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
++
++struct wuffs_zlib__decoder__struct {
++  // Do not access the private_impl's or private_data's fields directly. There
++  // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
++  // the wuffs_foo__bar__baz functions.
++  //
++  // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
++  // can be stack allocated when WUFFS_IMPLEMENTATION is defined.
++
++  struct {
++    uint32_t magic;
++    uint32_t active_coroutine;
++    wuffs_base__vtable vtable_for__wuffs_base__io_transformer;
++    wuffs_base__vtable null_vtable;
++
++    bool f_bad_call_sequence;
++    bool f_header_complete;
+     bool f_got_dictionary;
+     bool f_want_dictionary;
+     bool f_quirks[1];
+     bool f_ignore_checksum;
+-    uint32_t f_dict_id_got;
++    uint32_t f_dict_id_have;
+     uint32_t f_dict_id_want;
+ 
+-    uint32_t p_transform_io[1];
+-    uint32_t p_do_transform_io[1];
++    uint32_t p_transform_io;
++    uint32_t p_do_transform_io;
+   } private_impl;
+ 
+   struct {
+@@ -11050,9 +12128,9 @@ struct wuffs_zlib__decoder__struct {
+     wuffs_deflate__decoder f_flate;
+ 
+     struct {
+-      uint32_t v_checksum_got;
++      uint32_t v_checksum_have;
+       uint64_t scratch;
+-    } s_do_transform_io[1];
++    } s_do_transform_io;
+   } private_data;
+ 
+ #ifdef __cplusplus
+@@ -11141,9 +12219,9 @@ struct wuffs_zlib__decoder__struct {
+     return wuffs_zlib__decoder__set_quirk(this, a_key, a_value);
+   }
+ 
+-  inline uint64_t
+-  history_retain_length() const {
+-    return wuffs_zlib__decoder__history_retain_length(this);
++  inline wuffs_base__optional_u63
++  dst_history_retain_length() const {
++    return wuffs_zlib__decoder__dst_history_retain_length(this);
+   }
+ 
+   inline wuffs_base__range_ii_u64
+@@ -11184,11 +12262,9 @@ extern const char wuffs_png__error__unsupported_png_file[];
+ 
+ // ---------------- Public Consts
+ 
+-#define WUFFS_PNG__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
++#define WUFFS_PNG__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 2251799562027015u
+ 
+-#define WUFFS_PNG__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 2251799562027015
+-
+-#define WUFFS_PNG__DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL 8
++#define WUFFS_PNG__DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL 8u
+ 
+ // ---------------- Struct Declarations
+ 
+@@ -11321,11 +12397,6 @@ wuffs_png__decoder__tell_me_more(
+     wuffs_base__more_information* a_minfo,
+     wuffs_base__io_buffer* a_src);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_png__decoder__history_retain_length(
+-    const wuffs_png__decoder* self);
+-
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+ wuffs_png__decoder__workbuf_len(
+@@ -11438,26 +12509,26 @@ struct wuffs_png__decoder__struct {
+         wuffs_png__decoder* self,
+         wuffs_base__slice_u8 a_curr,
+         wuffs_base__slice_u8 a_prev);
+-    uint32_t p_decode_image_config[1];
+-    uint32_t p_do_decode_image_config[1];
+-    uint32_t p_decode_ihdr[1];
+-    uint32_t p_decode_other_chunk[1];
+-    uint32_t p_decode_actl[1];
+-    uint32_t p_decode_chrm[1];
+-    uint32_t p_decode_fctl[1];
+-    uint32_t p_decode_gama[1];
+-    uint32_t p_decode_iccp[1];
+-    uint32_t p_decode_plte[1];
+-    uint32_t p_decode_srgb[1];
+-    uint32_t p_decode_trns[1];
+-    uint32_t p_decode_frame_config[1];
+-    uint32_t p_do_decode_frame_config[1];
+-    uint32_t p_skip_frame[1];
+-    uint32_t p_decode_frame[1];
+-    uint32_t p_do_decode_frame[1];
+-    uint32_t p_decode_pass[1];
+-    uint32_t p_tell_me_more[1];
+-    uint32_t p_do_tell_me_more[1];
++    uint32_t p_decode_image_config;
++    uint32_t p_do_decode_image_config;
++    uint32_t p_decode_ihdr;
++    uint32_t p_decode_other_chunk;
++    uint32_t p_decode_actl;
++    uint32_t p_decode_chrm;
++    uint32_t p_decode_fctl;
++    uint32_t p_decode_gama;
++    uint32_t p_decode_iccp;
++    uint32_t p_decode_plte;
++    uint32_t p_decode_srgb;
++    uint32_t p_decode_trns;
++    uint32_t p_decode_frame_config;
++    uint32_t p_do_decode_frame_config;
++    uint32_t p_skip_frame;
++    uint32_t p_decode_frame;
++    uint32_t p_do_decode_frame;
++    uint32_t p_decode_pass;
++    uint32_t p_tell_me_more;
++    uint32_t p_do_tell_me_more;
+     wuffs_base__status (*choosy_filter_and_swizzle)(
+         wuffs_png__decoder* self,
+         wuffs_base__pixel_buffer* a_dst,
+@@ -11473,54 +12544,54 @@ struct wuffs_png__decoder__struct {
+     struct {
+       uint32_t v_checksum_have;
+       uint64_t scratch;
+-    } s_do_decode_image_config[1];
++    } s_do_decode_image_config;
+     struct {
+       uint64_t scratch;
+-    } s_decode_ihdr[1];
++    } s_decode_ihdr;
+     struct {
+       uint64_t scratch;
+-    } s_decode_other_chunk[1];
++    } s_decode_other_chunk;
+     struct {
+       uint64_t scratch;
+-    } s_decode_actl[1];
++    } s_decode_actl;
+     struct {
+       uint64_t scratch;
+-    } s_decode_chrm[1];
++    } s_decode_chrm;
+     struct {
+       uint32_t v_x0;
+       uint32_t v_x1;
+       uint32_t v_y1;
+       uint64_t scratch;
+-    } s_decode_fctl[1];
++    } s_decode_fctl;
+     struct {
+       uint64_t scratch;
+-    } s_decode_gama[1];
++    } s_decode_gama;
+     struct {
+       uint32_t v_num_entries;
+       uint32_t v_i;
+       uint64_t scratch;
+-    } s_decode_plte[1];
++    } s_decode_plte;
+     struct {
+       uint32_t v_i;
+       uint32_t v_n;
+       uint64_t scratch;
+-    } s_decode_trns[1];
++    } s_decode_trns;
+     struct {
+       uint64_t scratch;
+-    } s_do_decode_frame_config[1];
++    } s_do_decode_frame_config;
+     struct {
+       uint64_t scratch;
+-    } s_skip_frame[1];
++    } s_skip_frame;
+     struct {
+       uint64_t scratch;
+-    } s_do_decode_frame[1];
++    } s_do_decode_frame;
+     struct {
+       uint64_t scratch;
+-    } s_decode_pass[1];
++    } s_decode_pass;
+     struct {
+       wuffs_base__status v_zlib_status;
+       uint64_t scratch;
+-    } s_do_tell_me_more[1];
++    } s_do_tell_me_more;
+   } private_data;
+ 
+ #ifdef __cplusplus
+@@ -11664,11 +12735,6 @@ struct wuffs_png__decoder__struct {
+     return wuffs_png__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
+   }
+ 
+-  inline uint64_t
+-  history_retain_length() const {
+-    return wuffs_png__decoder__history_retain_length(this);
+-  }
+-
+   inline wuffs_base__range_ii_u64
+   workbuf_len() const {
+     return wuffs_png__decoder__workbuf_len(this);
+@@ -11681,24 +12747,21 @@ struct wuffs_png__decoder__struct {
+ 
+ #endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG) || defined(WUFFS_NONMONOLITHIC)
+ 
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA) || defined(WUFFS_NONMONOLITHIC)
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__QOI) || defined(WUFFS_NONMONOLITHIC)
+ 
+ // ---------------- Status Codes
+ 
+-extern const char wuffs_tga__error__bad_header[];
+-extern const char wuffs_tga__error__bad_run_length_encoding[];
+-extern const char wuffs_tga__error__truncated_input[];
+-extern const char wuffs_tga__error__unsupported_tga_file[];
++extern const char wuffs_qoi__error__bad_footer[];
++extern const char wuffs_qoi__error__bad_header[];
++extern const char wuffs_qoi__error__truncated_input[];
+ 
+ // ---------------- Public Consts
+ 
+-#define WUFFS_TGA__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
+-
+-#define WUFFS_TGA__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
++#define WUFFS_QOI__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
+ 
+ // ---------------- Struct Declarations
+ 
+-typedef struct wuffs_tga__decoder__struct wuffs_tga__decoder;
++typedef struct wuffs_qoi__decoder__struct wuffs_qoi__decoder;
+ 
+ #ifdef __cplusplus
+ extern "C" {
+@@ -11713,14 +12776,14 @@ extern "C" {
+ // Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
+ 
+ wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_tga__decoder__initialize(
+-    wuffs_tga__decoder* self,
++wuffs_qoi__decoder__initialize(
++    wuffs_qoi__decoder* self,
+     size_t sizeof_star_self,
+     uint64_t wuffs_version,
+     uint32_t options);
+ 
+ size_t
+-sizeof__wuffs_tga__decoder(void);
++sizeof__wuffs_qoi__decoder(void);
+ 
+ // ---------------- Allocs
+ 
+@@ -11730,19 +12793,19 @@ sizeof__wuffs_tga__decoder(void);
+ // calling free on the returned pointer. That pointer is effectively a C++
+ // std::unique_ptr<T, wuffs_unique_ptr_deleter>.
+ 
+-wuffs_tga__decoder*
+-wuffs_tga__decoder__alloc(void);
++wuffs_qoi__decoder*
++wuffs_qoi__decoder__alloc(void);
+ 
+ static inline wuffs_base__image_decoder*
+-wuffs_tga__decoder__alloc_as__wuffs_base__image_decoder(void) {
+-  return (wuffs_base__image_decoder*)(wuffs_tga__decoder__alloc());
++wuffs_qoi__decoder__alloc_as__wuffs_base__image_decoder(void) {
++  return (wuffs_base__image_decoder*)(wuffs_qoi__decoder__alloc());
+ }
+ 
+ // ---------------- Upcasts
+ 
+ static inline wuffs_base__image_decoder*
+-wuffs_tga__decoder__upcast_as__wuffs_base__image_decoder(
+-    wuffs_tga__decoder* p) {
++wuffs_qoi__decoder__upcast_as__wuffs_base__image_decoder(
++    wuffs_qoi__decoder* p) {
+   return (wuffs_base__image_decoder*)p;
+ }
+ 
+@@ -11750,35 +12813,35 @@ wuffs_tga__decoder__upcast_as__wuffs_base__image_decoder(
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_tga__decoder__get_quirk(
+-    const wuffs_tga__decoder* self,
++wuffs_qoi__decoder__get_quirk(
++    const wuffs_qoi__decoder* self,
+     uint32_t a_key);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_tga__decoder__set_quirk(
+-    wuffs_tga__decoder* self,
++wuffs_qoi__decoder__set_quirk(
++    wuffs_qoi__decoder* self,
+     uint32_t a_key,
+     uint64_t a_value);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_tga__decoder__decode_image_config(
+-    wuffs_tga__decoder* self,
++wuffs_qoi__decoder__decode_image_config(
++    wuffs_qoi__decoder* self,
+     wuffs_base__image_config* a_dst,
+     wuffs_base__io_buffer* a_src);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_tga__decoder__decode_frame_config(
+-    wuffs_tga__decoder* self,
++wuffs_qoi__decoder__decode_frame_config(
++    wuffs_qoi__decoder* self,
+     wuffs_base__frame_config* a_dst,
+     wuffs_base__io_buffer* a_src);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_tga__decoder__decode_frame(
+-    wuffs_tga__decoder* self,
++wuffs_qoi__decoder__decode_frame(
++    wuffs_qoi__decoder* self,
+     wuffs_base__pixel_buffer* a_dst,
+     wuffs_base__io_buffer* a_src,
+     wuffs_base__pixel_blend a_blend,
+@@ -11787,55 +12850,50 @@ wuffs_tga__decoder__decode_frame(
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
+-wuffs_tga__decoder__frame_dirty_rect(
+-    const wuffs_tga__decoder* self);
++wuffs_qoi__decoder__frame_dirty_rect(
++    const wuffs_qoi__decoder* self);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_tga__decoder__num_animation_loops(
+-    const wuffs_tga__decoder* self);
++wuffs_qoi__decoder__num_animation_loops(
++    const wuffs_qoi__decoder* self);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_tga__decoder__num_decoded_frame_configs(
+-    const wuffs_tga__decoder* self);
++wuffs_qoi__decoder__num_decoded_frame_configs(
++    const wuffs_qoi__decoder* self);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_tga__decoder__num_decoded_frames(
+-    const wuffs_tga__decoder* self);
++wuffs_qoi__decoder__num_decoded_frames(
++    const wuffs_qoi__decoder* self);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_tga__decoder__restart_frame(
+-    wuffs_tga__decoder* self,
++wuffs_qoi__decoder__restart_frame(
++    wuffs_qoi__decoder* self,
+     uint64_t a_index,
+     uint64_t a_io_position);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_tga__decoder__set_report_metadata(
+-    wuffs_tga__decoder* self,
++wuffs_qoi__decoder__set_report_metadata(
++    wuffs_qoi__decoder* self,
+     uint32_t a_fourcc,
+     bool a_report);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_tga__decoder__tell_me_more(
+-    wuffs_tga__decoder* self,
++wuffs_qoi__decoder__tell_me_more(
++    wuffs_qoi__decoder* self,
+     wuffs_base__io_buffer* a_dst,
+     wuffs_base__more_information* a_minfo,
+     wuffs_base__io_buffer* a_src);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_tga__decoder__history_retain_length(
+-    const wuffs_tga__decoder* self);
+-
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_tga__decoder__workbuf_len(
+-    const wuffs_tga__decoder* self);
++wuffs_qoi__decoder__workbuf_len(
++    const wuffs_qoi__decoder* self);
+ 
+ #ifdef __cplusplus
+ }  // extern "C"
+@@ -11850,7 +12908,7 @@ wuffs_tga__decoder__workbuf_len(
+ 
+ #if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
+ 
+-struct wuffs_tga__decoder__struct {
++struct wuffs_qoi__decoder__struct {
+   // Do not access the private_impl's or private_data's fields directly. There
+   // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
+   // the wuffs_foo__bar__baz functions.
+@@ -11864,69 +12922,58 @@ struct wuffs_tga__decoder__struct {
+     wuffs_base__vtable vtable_for__wuffs_base__image_decoder;
+     wuffs_base__vtable null_vtable;
+ 
++    uint32_t f_pixfmt;
+     uint32_t f_width;
+     uint32_t f_height;
++    uint64_t f_remaining_pixels_times_4;
+     uint8_t f_call_sequence;
+-    uint8_t f_header_id_length;
+-    uint8_t f_header_color_map_type;
+-    uint8_t f_header_image_type;
+-    uint16_t f_header_color_map_first_entry_index;
+-    uint16_t f_header_color_map_length;
+-    uint8_t f_header_color_map_entry_size;
+-    uint8_t f_header_pixel_depth;
+-    uint8_t f_header_image_descriptor;
+-    bool f_opaque;
+-    uint32_t f_scratch_bytes_per_pixel;
+-    uint32_t f_src_bytes_per_pixel;
+-    uint32_t f_src_pixfmt;
+-    uint64_t f_frame_config_io_position;
++    uint32_t f_buffer_index;
++    uint32_t f_dst_x;
++    uint32_t f_dst_y;
+     wuffs_base__pixel_swizzler f_swizzler;
+ 
+-    uint32_t p_decode_image_config[1];
+-    uint32_t p_do_decode_image_config[1];
+-    uint32_t p_decode_frame_config[1];
+-    uint32_t p_do_decode_frame_config[1];
+-    uint32_t p_decode_frame[1];
+-    uint32_t p_do_decode_frame[1];
++    uint32_t p_decode_image_config;
++    uint32_t p_do_decode_image_config;
++    uint32_t p_decode_frame_config;
++    uint32_t p_do_decode_frame_config;
++    uint32_t p_decode_frame;
++    uint32_t p_do_decode_frame;
++    uint32_t p_from_src_to_buffer;
+   } private_impl;
+ 
+   struct {
+-    uint8_t f_dst_palette[1024];
+-    uint8_t f_src_palette[1024];
+-    uint8_t f_scratch[4];
++    uint8_t f_pixel[4];
++    uint8_t f_cache[256];
++    uint8_t f_buffer[8196];
+ 
+     struct {
+-      uint32_t v_i;
+       uint64_t scratch;
+-    } s_do_decode_image_config[1];
++    } s_do_decode_image_config;
+     struct {
+-      uint64_t v_dst_bytes_per_pixel;
+-      uint32_t v_dst_x;
+-      uint32_t v_dst_y;
+-      uint64_t v_mark;
+-      uint32_t v_num_pixels32;
+-      uint32_t v_lit_length;
+-      uint32_t v_run_length;
+-      uint64_t v_num_dst_bytes;
+       uint64_t scratch;
+-    } s_do_decode_frame[1];
++    } s_do_decode_frame;
++    struct {
++      uint8_t v_dg;
++      uint32_t v_bi;
++      uint32_t v_bk;
++    } s_from_src_to_buffer;
+   } private_data;
+ 
+ #ifdef __cplusplus
+ #if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
+-  using unique_ptr = std::unique_ptr<wuffs_tga__decoder, wuffs_unique_ptr_deleter>;
++  using unique_ptr = std::unique_ptr<wuffs_qoi__decoder, wuffs_unique_ptr_deleter>;
+ 
+   // On failure, the alloc_etc functions return nullptr. They don't throw.
+ 
+   static inline unique_ptr
+   alloc() {
+-    return unique_ptr(wuffs_tga__decoder__alloc());
++    return unique_ptr(wuffs_qoi__decoder__alloc());
+   }
+ 
+   static inline wuffs_base__image_decoder::unique_ptr
+   alloc_as__wuffs_base__image_decoder() {
+     return wuffs_base__image_decoder::unique_ptr(
+-        wuffs_tga__decoder__alloc_as__wuffs_base__image_decoder());
++        wuffs_qoi__decoder__alloc_as__wuffs_base__image_decoder());
+   }
+ #endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
+ 
+@@ -11942,10 +12989,10 @@ struct wuffs_tga__decoder__struct {
+   // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
+   // order to provide convenience methods. These forward on "this", so that you
+   // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
+-  wuffs_tga__decoder__struct() = delete;
+-  wuffs_tga__decoder__struct(const wuffs_tga__decoder__struct&) = delete;
+-  wuffs_tga__decoder__struct& operator=(
+-      const wuffs_tga__decoder__struct&) = delete;
++  wuffs_qoi__decoder__struct() = delete;
++  wuffs_qoi__decoder__struct(const wuffs_qoi__decoder__struct&) = delete;
++  wuffs_qoi__decoder__struct& operator=(
++      const wuffs_qoi__decoder__struct&) = delete;
+ #endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
+ 
+ #if !defined(WUFFS_IMPLEMENTATION)
+@@ -11965,7 +13012,7 @@ struct wuffs_tga__decoder__struct {
+       size_t sizeof_star_self,
+       uint64_t wuffs_version,
+       uint32_t options) {
+-    return wuffs_tga__decoder__initialize(
++    return wuffs_qoi__decoder__initialize(
+         this, sizeof_star_self, wuffs_version, options);
+   }
+ 
+@@ -11977,28 +13024,28 @@ struct wuffs_tga__decoder__struct {
+   inline uint64_t
+   get_quirk(
+       uint32_t a_key) const {
+-    return wuffs_tga__decoder__get_quirk(this, a_key);
++    return wuffs_qoi__decoder__get_quirk(this, a_key);
+   }
+ 
+   inline wuffs_base__status
+   set_quirk(
+       uint32_t a_key,
+       uint64_t a_value) {
+-    return wuffs_tga__decoder__set_quirk(this, a_key, a_value);
++    return wuffs_qoi__decoder__set_quirk(this, a_key, a_value);
+   }
+ 
+   inline wuffs_base__status
+   decode_image_config(
+       wuffs_base__image_config* a_dst,
+       wuffs_base__io_buffer* a_src) {
+-    return wuffs_tga__decoder__decode_image_config(this, a_dst, a_src);
++    return wuffs_qoi__decoder__decode_image_config(this, a_dst, a_src);
+   }
+ 
+   inline wuffs_base__status
+   decode_frame_config(
+       wuffs_base__frame_config* a_dst,
+       wuffs_base__io_buffer* a_src) {
+-    return wuffs_tga__decoder__decode_frame_config(this, a_dst, a_src);
++    return wuffs_qoi__decoder__decode_frame_config(this, a_dst, a_src);
+   }
+ 
+   inline wuffs_base__status
+@@ -12008,41 +13055,41 @@ struct wuffs_tga__decoder__struct {
+       wuffs_base__pixel_blend a_blend,
+       wuffs_base__slice_u8 a_workbuf,
+       wuffs_base__decode_frame_options* a_opts) {
+-    return wuffs_tga__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
++    return wuffs_qoi__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
+   }
+ 
+   inline wuffs_base__rect_ie_u32
+   frame_dirty_rect() const {
+-    return wuffs_tga__decoder__frame_dirty_rect(this);
++    return wuffs_qoi__decoder__frame_dirty_rect(this);
+   }
+ 
+   inline uint32_t
+   num_animation_loops() const {
+-    return wuffs_tga__decoder__num_animation_loops(this);
++    return wuffs_qoi__decoder__num_animation_loops(this);
+   }
+ 
+   inline uint64_t
+   num_decoded_frame_configs() const {
+-    return wuffs_tga__decoder__num_decoded_frame_configs(this);
++    return wuffs_qoi__decoder__num_decoded_frame_configs(this);
+   }
+ 
+   inline uint64_t
+   num_decoded_frames() const {
+-    return wuffs_tga__decoder__num_decoded_frames(this);
++    return wuffs_qoi__decoder__num_decoded_frames(this);
+   }
+ 
+   inline wuffs_base__status
+   restart_frame(
+       uint64_t a_index,
+       uint64_t a_io_position) {
+-    return wuffs_tga__decoder__restart_frame(this, a_index, a_io_position);
++    return wuffs_qoi__decoder__restart_frame(this, a_index, a_io_position);
+   }
+ 
+   inline wuffs_base__empty_struct
+   set_report_metadata(
+       uint32_t a_fourcc,
+       bool a_report) {
+-    return wuffs_tga__decoder__set_report_metadata(this, a_fourcc, a_report);
++    return wuffs_qoi__decoder__set_report_metadata(this, a_fourcc, a_report);
+   }
+ 
+   inline wuffs_base__status
+@@ -12050,42 +13097,30 @@ struct wuffs_tga__decoder__struct {
+       wuffs_base__io_buffer* a_dst,
+       wuffs_base__more_information* a_minfo,
+       wuffs_base__io_buffer* a_src) {
+-    return wuffs_tga__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
+-  }
+-
+-  inline uint64_t
+-  history_retain_length() const {
+-    return wuffs_tga__decoder__history_retain_length(this);
++    return wuffs_qoi__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
+   }
+ 
+   inline wuffs_base__range_ii_u64
+   workbuf_len() const {
+-    return wuffs_tga__decoder__workbuf_len(this);
++    return wuffs_qoi__decoder__workbuf_len(this);
+   }
+ 
+ #endif  // __cplusplus
+-};  // struct wuffs_tga__decoder__struct
++};  // struct wuffs_qoi__decoder__struct
+ 
+ #endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA) || defined(WUFFS_NONMONOLITHIC)
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__QOI) || defined(WUFFS_NONMONOLITHIC)
+ 
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP) || defined(WUFFS_NONMONOLITHIC)
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__SHA256) || defined(WUFFS_NONMONOLITHIC)
+ 
+ // ---------------- Status Codes
+ 
+-extern const char wuffs_wbmp__error__bad_header[];
+-extern const char wuffs_wbmp__error__truncated_input[];
+-
+ // ---------------- Public Consts
+ 
+-#define WUFFS_WBMP__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
+-
+-#define WUFFS_WBMP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
+-
+ // ---------------- Struct Declarations
+ 
+-typedef struct wuffs_wbmp__decoder__struct wuffs_wbmp__decoder;
++typedef struct wuffs_sha256__hasher__struct wuffs_sha256__hasher;
+ 
+ #ifdef __cplusplus
+ extern "C" {
+@@ -12100,14 +13135,14 @@ extern "C" {
+ // Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
+ 
+ wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_wbmp__decoder__initialize(
+-    wuffs_wbmp__decoder* self,
++wuffs_sha256__hasher__initialize(
++    wuffs_sha256__hasher* self,
+     size_t sizeof_star_self,
+     uint64_t wuffs_version,
+     uint32_t options);
+ 
+ size_t
+-sizeof__wuffs_wbmp__decoder(void);
++sizeof__wuffs_sha256__hasher(void);
+ 
+ // ---------------- Allocs
+ 
+@@ -12117,112 +13152,53 @@ sizeof__wuffs_wbmp__decoder(void);
+ // calling free on the returned pointer. That pointer is effectively a C++
+ // std::unique_ptr<T, wuffs_unique_ptr_deleter>.
+ 
+-wuffs_wbmp__decoder*
+-wuffs_wbmp__decoder__alloc(void);
++wuffs_sha256__hasher*
++wuffs_sha256__hasher__alloc(void);
+ 
+-static inline wuffs_base__image_decoder*
+-wuffs_wbmp__decoder__alloc_as__wuffs_base__image_decoder(void) {
+-  return (wuffs_base__image_decoder*)(wuffs_wbmp__decoder__alloc());
++static inline wuffs_base__hasher_bitvec256*
++wuffs_sha256__hasher__alloc_as__wuffs_base__hasher_bitvec256(void) {
++  return (wuffs_base__hasher_bitvec256*)(wuffs_sha256__hasher__alloc());
+ }
+ 
+ // ---------------- Upcasts
+ 
+-static inline wuffs_base__image_decoder*
+-wuffs_wbmp__decoder__upcast_as__wuffs_base__image_decoder(
+-    wuffs_wbmp__decoder* p) {
+-  return (wuffs_base__image_decoder*)p;
++static inline wuffs_base__hasher_bitvec256*
++wuffs_sha256__hasher__upcast_as__wuffs_base__hasher_bitvec256(
++    wuffs_sha256__hasher* p) {
++  return (wuffs_base__hasher_bitvec256*)p;
+ }
+ 
+ // ---------------- Public Function Prototypes
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_wbmp__decoder__get_quirk(
+-    const wuffs_wbmp__decoder* self,
++wuffs_sha256__hasher__get_quirk(
++    const wuffs_sha256__hasher* self,
+     uint32_t a_key);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_wbmp__decoder__set_quirk(
+-    wuffs_wbmp__decoder* self,
++wuffs_sha256__hasher__set_quirk(
++    wuffs_sha256__hasher* self,
+     uint32_t a_key,
+     uint64_t a_value);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_wbmp__decoder__decode_image_config(
+-    wuffs_wbmp__decoder* self,
+-    wuffs_base__image_config* a_dst,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_wbmp__decoder__decode_frame_config(
+-    wuffs_wbmp__decoder* self,
+-    wuffs_base__frame_config* a_dst,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_wbmp__decoder__decode_frame(
+-    wuffs_wbmp__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
+-wuffs_wbmp__decoder__frame_dirty_rect(
+-    const wuffs_wbmp__decoder* self);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_wbmp__decoder__num_animation_loops(
+-    const wuffs_wbmp__decoder* self);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_wbmp__decoder__num_decoded_frame_configs(
+-    const wuffs_wbmp__decoder* self);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_wbmp__decoder__num_decoded_frames(
+-    const wuffs_wbmp__decoder* self);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_wbmp__decoder__restart_frame(
+-    wuffs_wbmp__decoder* self,
+-    uint64_t a_index,
+-    uint64_t a_io_position);
+-
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_wbmp__decoder__set_report_metadata(
+-    wuffs_wbmp__decoder* self,
+-    uint32_t a_fourcc,
+-    bool a_report);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_wbmp__decoder__tell_me_more(
+-    wuffs_wbmp__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__more_information* a_minfo,
+-    wuffs_base__io_buffer* a_src);
++wuffs_sha256__hasher__update(
++    wuffs_sha256__hasher* self,
++    wuffs_base__slice_u8 a_x);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_wbmp__decoder__history_retain_length(
+-    const wuffs_wbmp__decoder* self);
++WUFFS_BASE__MAYBE_STATIC wuffs_base__bitvec256
++wuffs_sha256__hasher__update_bitvec256(
++    wuffs_sha256__hasher* self,
++    wuffs_base__slice_u8 a_x);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_wbmp__decoder__workbuf_len(
+-    const wuffs_wbmp__decoder* self);
++WUFFS_BASE__MAYBE_STATIC wuffs_base__bitvec256
++wuffs_sha256__hasher__checksum_bitvec256(
++    const wuffs_sha256__hasher* self);
+ 
+ #ifdef __cplusplus
+ }  // extern "C"
+@@ -12237,7 +13213,7 @@ wuffs_wbmp__decoder__workbuf_len(
+ 
+ #if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
+ 
+-struct wuffs_wbmp__decoder__struct {
++struct wuffs_sha256__hasher__struct {
+   // Do not access the private_impl's or private_data's fields directly. There
+   // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
+   // the wuffs_foo__bar__baz functions.
+@@ -12248,52 +13224,41 @@ struct wuffs_wbmp__decoder__struct {
+   struct {
+     uint32_t magic;
+     uint32_t active_coroutine;
+-    wuffs_base__vtable vtable_for__wuffs_base__image_decoder;
++    wuffs_base__vtable vtable_for__wuffs_base__hasher_bitvec256;
+     wuffs_base__vtable null_vtable;
+ 
+-    uint32_t f_width;
+-    uint32_t f_height;
+-    uint8_t f_call_sequence;
+-    uint64_t f_frame_config_io_position;
+-    wuffs_base__pixel_swizzler f_swizzler;
+-
+-    uint32_t p_decode_image_config[1];
+-    uint32_t p_do_decode_image_config[1];
+-    uint32_t p_decode_frame_config[1];
+-    uint32_t p_do_decode_frame_config[1];
+-    uint32_t p_decode_frame[1];
+-    uint32_t p_do_decode_frame[1];
++    uint64_t f_length_modulo_u64;
++    bool f_length_overflows_u64;
++    uint8_t f_padding0;
++    uint8_t f_padding1;
++    uint8_t f_padding2;
++    uint32_t f_buf_len;
++    uint8_t f_buf_data[64];
++    uint32_t f_h0;
++    uint32_t f_h1;
++    uint32_t f_h2;
++    uint32_t f_h3;
++    uint32_t f_h4;
++    uint32_t f_h5;
++    uint32_t f_h6;
++    uint32_t f_h7;
+   } private_impl;
+ 
+-  struct {
+-    struct {
+-      uint32_t v_i;
+-      uint32_t v_p;
+-    } s_do_decode_image_config[1];
+-    struct {
+-      uint64_t v_dst_bytes_per_pixel;
+-      uint32_t v_dst_x;
+-      uint32_t v_dst_y;
+-      uint8_t v_src[1];
+-      uint8_t v_c;
+-    } s_do_decode_frame[1];
+-  } private_data;
+-
+ #ifdef __cplusplus
+ #if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
+-  using unique_ptr = std::unique_ptr<wuffs_wbmp__decoder, wuffs_unique_ptr_deleter>;
++  using unique_ptr = std::unique_ptr<wuffs_sha256__hasher, wuffs_unique_ptr_deleter>;
+ 
+   // On failure, the alloc_etc functions return nullptr. They don't throw.
+ 
+   static inline unique_ptr
+   alloc() {
+-    return unique_ptr(wuffs_wbmp__decoder__alloc());
++    return unique_ptr(wuffs_sha256__hasher__alloc());
+   }
+ 
+-  static inline wuffs_base__image_decoder::unique_ptr
+-  alloc_as__wuffs_base__image_decoder() {
+-    return wuffs_base__image_decoder::unique_ptr(
+-        wuffs_wbmp__decoder__alloc_as__wuffs_base__image_decoder());
++  static inline wuffs_base__hasher_bitvec256::unique_ptr
++  alloc_as__wuffs_base__hasher_bitvec256() {
++    return wuffs_base__hasher_bitvec256::unique_ptr(
++        wuffs_sha256__hasher__alloc_as__wuffs_base__hasher_bitvec256());
+   }
+ #endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
+ 
+@@ -12309,10 +13274,10 @@ struct wuffs_wbmp__decoder__struct {
+   // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
+   // order to provide convenience methods. These forward on "this", so that you
+   // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
+-  wuffs_wbmp__decoder__struct() = delete;
+-  wuffs_wbmp__decoder__struct(const wuffs_wbmp__decoder__struct&) = delete;
+-  wuffs_wbmp__decoder__struct& operator=(
+-      const wuffs_wbmp__decoder__struct&) = delete;
++  wuffs_sha256__hasher__struct() = delete;
++  wuffs_sha256__hasher__struct(const wuffs_sha256__hasher__struct&) = delete;
++  wuffs_sha256__hasher__struct& operator=(
++      const wuffs_sha256__hasher__struct&) = delete;
+ #endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
+ 
+ #if !defined(WUFFS_IMPLEMENTATION)
+@@ -12332,120 +13297,68 @@ struct wuffs_wbmp__decoder__struct {
+       size_t sizeof_star_self,
+       uint64_t wuffs_version,
+       uint32_t options) {
+-    return wuffs_wbmp__decoder__initialize(
++    return wuffs_sha256__hasher__initialize(
+         this, sizeof_star_self, wuffs_version, options);
+   }
+ 
+-  inline wuffs_base__image_decoder*
+-  upcast_as__wuffs_base__image_decoder() {
+-    return (wuffs_base__image_decoder*)this;
++  inline wuffs_base__hasher_bitvec256*
++  upcast_as__wuffs_base__hasher_bitvec256() {
++    return (wuffs_base__hasher_bitvec256*)this;
+   }
+ 
+   inline uint64_t
+   get_quirk(
+       uint32_t a_key) const {
+-    return wuffs_wbmp__decoder__get_quirk(this, a_key);
++    return wuffs_sha256__hasher__get_quirk(this, a_key);
+   }
+ 
+   inline wuffs_base__status
+   set_quirk(
+       uint32_t a_key,
+       uint64_t a_value) {
+-    return wuffs_wbmp__decoder__set_quirk(this, a_key, a_value);
+-  }
+-
+-  inline wuffs_base__status
+-  decode_image_config(
+-      wuffs_base__image_config* a_dst,
+-      wuffs_base__io_buffer* a_src) {
+-    return wuffs_wbmp__decoder__decode_image_config(this, a_dst, a_src);
+-  }
+-
+-  inline wuffs_base__status
+-  decode_frame_config(
+-      wuffs_base__frame_config* a_dst,
+-      wuffs_base__io_buffer* a_src) {
+-    return wuffs_wbmp__decoder__decode_frame_config(this, a_dst, a_src);
+-  }
+-
+-  inline wuffs_base__status
+-  decode_frame(
+-      wuffs_base__pixel_buffer* a_dst,
+-      wuffs_base__io_buffer* a_src,
+-      wuffs_base__pixel_blend a_blend,
+-      wuffs_base__slice_u8 a_workbuf,
+-      wuffs_base__decode_frame_options* a_opts) {
+-    return wuffs_wbmp__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
+-  }
+-
+-  inline wuffs_base__rect_ie_u32
+-  frame_dirty_rect() const {
+-    return wuffs_wbmp__decoder__frame_dirty_rect(this);
+-  }
+-
+-  inline uint32_t
+-  num_animation_loops() const {
+-    return wuffs_wbmp__decoder__num_animation_loops(this);
+-  }
+-
+-  inline uint64_t
+-  num_decoded_frame_configs() const {
+-    return wuffs_wbmp__decoder__num_decoded_frame_configs(this);
+-  }
+-
+-  inline uint64_t
+-  num_decoded_frames() const {
+-    return wuffs_wbmp__decoder__num_decoded_frames(this);
+-  }
+-
+-  inline wuffs_base__status
+-  restart_frame(
+-      uint64_t a_index,
+-      uint64_t a_io_position) {
+-    return wuffs_wbmp__decoder__restart_frame(this, a_index, a_io_position);
++    return wuffs_sha256__hasher__set_quirk(this, a_key, a_value);
+   }
+ 
+   inline wuffs_base__empty_struct
+-  set_report_metadata(
+-      uint32_t a_fourcc,
+-      bool a_report) {
+-    return wuffs_wbmp__decoder__set_report_metadata(this, a_fourcc, a_report);
+-  }
+-
+-  inline wuffs_base__status
+-  tell_me_more(
+-      wuffs_base__io_buffer* a_dst,
+-      wuffs_base__more_information* a_minfo,
+-      wuffs_base__io_buffer* a_src) {
+-    return wuffs_wbmp__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
++  update(
++      wuffs_base__slice_u8 a_x) {
++    return wuffs_sha256__hasher__update(this, a_x);
+   }
+ 
+-  inline uint64_t
+-  history_retain_length() const {
+-    return wuffs_wbmp__decoder__history_retain_length(this);
++  inline wuffs_base__bitvec256
++  update_bitvec256(
++      wuffs_base__slice_u8 a_x) {
++    return wuffs_sha256__hasher__update_bitvec256(this, a_x);
+   }
+ 
+-  inline wuffs_base__range_ii_u64
+-  workbuf_len() const {
+-    return wuffs_wbmp__decoder__workbuf_len(this);
++  inline wuffs_base__bitvec256
++  checksum_bitvec256() const {
++    return wuffs_sha256__hasher__checksum_bitvec256(this);
+   }
+ 
+ #endif  // __cplusplus
+-};  // struct wuffs_wbmp__decoder__struct
++};  // struct wuffs_sha256__hasher__struct
+ 
+ #endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP) || defined(WUFFS_NONMONOLITHIC)
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__SHA256) || defined(WUFFS_NONMONOLITHIC)
+ 
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH32) || defined(WUFFS_NONMONOLITHIC)
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA) || defined(WUFFS_NONMONOLITHIC)
+ 
+ // ---------------- Status Codes
+ 
++extern const char wuffs_tga__error__bad_header[];
++extern const char wuffs_tga__error__bad_run_length_encoding[];
++extern const char wuffs_tga__error__truncated_input[];
++extern const char wuffs_tga__error__unsupported_tga_file[];
++
+ // ---------------- Public Consts
+ 
++#define WUFFS_TGA__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
++
+ // ---------------- Struct Declarations
+ 
+-typedef struct wuffs_xxhash32__hasher__struct wuffs_xxhash32__hasher;
++typedef struct wuffs_tga__decoder__struct wuffs_tga__decoder;
+ 
+ #ifdef __cplusplus
+ extern "C" {
+@@ -12460,14 +13373,14 @@ extern "C" {
+ // Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
+ 
+ wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_xxhash32__hasher__initialize(
+-    wuffs_xxhash32__hasher* self,
++wuffs_tga__decoder__initialize(
++    wuffs_tga__decoder* self,
+     size_t sizeof_star_self,
+     uint64_t wuffs_version,
+     uint32_t options);
+ 
+ size_t
+-sizeof__wuffs_xxhash32__hasher(void);
++sizeof__wuffs_tga__decoder(void);
+ 
+ // ---------------- Allocs
+ 
+@@ -12477,53 +13390,107 @@ sizeof__wuffs_xxhash32__hasher(void);
+ // calling free on the returned pointer. That pointer is effectively a C++
+ // std::unique_ptr<T, wuffs_unique_ptr_deleter>.
+ 
+-wuffs_xxhash32__hasher*
+-wuffs_xxhash32__hasher__alloc(void);
++wuffs_tga__decoder*
++wuffs_tga__decoder__alloc(void);
+ 
+-static inline wuffs_base__hasher_u32*
+-wuffs_xxhash32__hasher__alloc_as__wuffs_base__hasher_u32(void) {
+-  return (wuffs_base__hasher_u32*)(wuffs_xxhash32__hasher__alloc());
++static inline wuffs_base__image_decoder*
++wuffs_tga__decoder__alloc_as__wuffs_base__image_decoder(void) {
++  return (wuffs_base__image_decoder*)(wuffs_tga__decoder__alloc());
+ }
+ 
+ // ---------------- Upcasts
+ 
+-static inline wuffs_base__hasher_u32*
+-wuffs_xxhash32__hasher__upcast_as__wuffs_base__hasher_u32(
+-    wuffs_xxhash32__hasher* p) {
+-  return (wuffs_base__hasher_u32*)p;
++static inline wuffs_base__image_decoder*
++wuffs_tga__decoder__upcast_as__wuffs_base__image_decoder(
++    wuffs_tga__decoder* p) {
++  return (wuffs_base__image_decoder*)p;
+ }
+ 
+ // ---------------- Public Function Prototypes
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_xxhash32__hasher__get_quirk(
+-    const wuffs_xxhash32__hasher* self,
++wuffs_tga__decoder__get_quirk(
++    const wuffs_tga__decoder* self,
+     uint32_t a_key);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_xxhash32__hasher__set_quirk(
+-    wuffs_xxhash32__hasher* self,
++wuffs_tga__decoder__set_quirk(
++    wuffs_tga__decoder* self,
+     uint32_t a_key,
+     uint64_t a_value);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_xxhash32__hasher__update(
+-    wuffs_xxhash32__hasher* self,
+-    wuffs_base__slice_u8 a_x);
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_tga__decoder__decode_image_config(
++    wuffs_tga__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_xxhash32__hasher__update_u32(
+-    wuffs_xxhash32__hasher* self,
+-    wuffs_base__slice_u8 a_x);
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_tga__decoder__decode_frame_config(
++    wuffs_tga__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_tga__decoder__decode_frame(
++    wuffs_tga__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
++wuffs_tga__decoder__frame_dirty_rect(
++    const wuffs_tga__decoder* self);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_xxhash32__hasher__checksum_u32(
+-    const wuffs_xxhash32__hasher* self);
++wuffs_tga__decoder__num_animation_loops(
++    const wuffs_tga__decoder* self);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_tga__decoder__num_decoded_frame_configs(
++    const wuffs_tga__decoder* self);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_tga__decoder__num_decoded_frames(
++    const wuffs_tga__decoder* self);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_tga__decoder__restart_frame(
++    wuffs_tga__decoder* self,
++    uint64_t a_index,
++    uint64_t a_io_position);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_tga__decoder__set_report_metadata(
++    wuffs_tga__decoder* self,
++    uint32_t a_fourcc,
++    bool a_report);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_tga__decoder__tell_me_more(
++    wuffs_tga__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__more_information* a_minfo,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_tga__decoder__workbuf_len(
++    const wuffs_tga__decoder* self);
+ 
+ #ifdef __cplusplus
+ }  // extern "C"
+@@ -12538,7 +13505,7 @@ wuffs_xxhash32__hasher__checksum_u32(
+ 
+ #if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
+ 
+-struct wuffs_xxhash32__hasher__struct {
++struct wuffs_tga__decoder__struct {
+   // Do not access the private_impl's or private_data's fields directly. There
+   // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
+   // the wuffs_foo__bar__baz functions.
+@@ -12549,36 +13516,72 @@ struct wuffs_xxhash32__hasher__struct {
+   struct {
+     uint32_t magic;
+     uint32_t active_coroutine;
+-    wuffs_base__vtable vtable_for__wuffs_base__hasher_u32;
++    wuffs_base__vtable vtable_for__wuffs_base__image_decoder;
+     wuffs_base__vtable null_vtable;
+ 
+-    uint32_t f_length_modulo_u32;
+-    bool f_length_overflows_u32;
+-    uint8_t f_padding0;
+-    uint8_t f_padding1;
+-    uint8_t f_buf_len;
+-    uint8_t f_buf_data[16];
+-    uint32_t f_v0;
+-    uint32_t f_v1;
+-    uint32_t f_v2;
+-    uint32_t f_v3;
++    uint32_t f_width;
++    uint32_t f_height;
++    uint8_t f_call_sequence;
++    uint8_t f_header_id_length;
++    uint8_t f_header_color_map_type;
++    uint8_t f_header_image_type;
++    uint16_t f_header_color_map_first_entry_index;
++    uint16_t f_header_color_map_length;
++    uint8_t f_header_color_map_entry_size;
++    uint8_t f_header_pixel_depth;
++    uint8_t f_header_image_descriptor;
++    bool f_opaque;
++    uint32_t f_scratch_bytes_per_pixel;
++    uint32_t f_src_bytes_per_pixel;
++    uint32_t f_src_pixfmt;
++    uint64_t f_frame_config_io_position;
++    wuffs_base__pixel_swizzler f_swizzler;
++
++    uint32_t p_decode_image_config;
++    uint32_t p_do_decode_image_config;
++    uint32_t p_decode_frame_config;
++    uint32_t p_do_decode_frame_config;
++    uint32_t p_decode_frame;
++    uint32_t p_do_decode_frame;
+   } private_impl;
+ 
++  struct {
++    uint8_t f_dst_palette[1024];
++    uint8_t f_src_palette[1024];
++    uint8_t f_scratch[4];
++
++    struct {
++      uint32_t v_i;
++      uint64_t scratch;
++    } s_do_decode_image_config;
++    struct {
++      uint64_t v_dst_bytes_per_pixel;
++      uint32_t v_dst_x;
++      uint32_t v_dst_y;
++      uint64_t v_mark;
++      uint32_t v_num_pixels32;
++      uint32_t v_lit_length;
++      uint32_t v_run_length;
++      uint64_t v_num_dst_bytes;
++      uint64_t scratch;
++    } s_do_decode_frame;
++  } private_data;
++
+ #ifdef __cplusplus
+ #if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
+-  using unique_ptr = std::unique_ptr<wuffs_xxhash32__hasher, wuffs_unique_ptr_deleter>;
++  using unique_ptr = std::unique_ptr<wuffs_tga__decoder, wuffs_unique_ptr_deleter>;
+ 
+   // On failure, the alloc_etc functions return nullptr. They don't throw.
+ 
+   static inline unique_ptr
+   alloc() {
+-    return unique_ptr(wuffs_xxhash32__hasher__alloc());
++    return unique_ptr(wuffs_tga__decoder__alloc());
+   }
+ 
+-  static inline wuffs_base__hasher_u32::unique_ptr
+-  alloc_as__wuffs_base__hasher_u32() {
+-    return wuffs_base__hasher_u32::unique_ptr(
+-        wuffs_xxhash32__hasher__alloc_as__wuffs_base__hasher_u32());
++  static inline wuffs_base__image_decoder::unique_ptr
++  alloc_as__wuffs_base__image_decoder() {
++    return wuffs_base__image_decoder::unique_ptr(
++        wuffs_tga__decoder__alloc_as__wuffs_base__image_decoder());
+   }
+ #endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
+ 
+@@ -12594,10 +13597,10 @@ struct wuffs_xxhash32__hasher__struct {
+   // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
+   // order to provide convenience methods. These forward on "this", so that you
+   // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
+-  wuffs_xxhash32__hasher__struct() = delete;
+-  wuffs_xxhash32__hasher__struct(const wuffs_xxhash32__hasher__struct&) = delete;
+-  wuffs_xxhash32__hasher__struct& operator=(
+-      const wuffs_xxhash32__hasher__struct&) = delete;
++  wuffs_tga__decoder__struct() = delete;
++  wuffs_tga__decoder__struct(const wuffs_tga__decoder__struct&) = delete;
++  wuffs_tga__decoder__struct& operator=(
++      const wuffs_tga__decoder__struct&) = delete;
+ #endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
+ 
+ #if !defined(WUFFS_IMPLEMENTATION)
+@@ -12617,53 +13620,107 @@ struct wuffs_xxhash32__hasher__struct {
+       size_t sizeof_star_self,
+       uint64_t wuffs_version,
+       uint32_t options) {
+-    return wuffs_xxhash32__hasher__initialize(
++    return wuffs_tga__decoder__initialize(
+         this, sizeof_star_self, wuffs_version, options);
+   }
+ 
+-  inline wuffs_base__hasher_u32*
+-  upcast_as__wuffs_base__hasher_u32() {
+-    return (wuffs_base__hasher_u32*)this;
++  inline wuffs_base__image_decoder*
++  upcast_as__wuffs_base__image_decoder() {
++    return (wuffs_base__image_decoder*)this;
+   }
+ 
+   inline uint64_t
+   get_quirk(
+       uint32_t a_key) const {
+-    return wuffs_xxhash32__hasher__get_quirk(this, a_key);
++    return wuffs_tga__decoder__get_quirk(this, a_key);
+   }
+ 
+   inline wuffs_base__status
+   set_quirk(
+       uint32_t a_key,
+       uint64_t a_value) {
+-    return wuffs_xxhash32__hasher__set_quirk(this, a_key, a_value);
++    return wuffs_tga__decoder__set_quirk(this, a_key, a_value);
+   }
+ 
+-  inline wuffs_base__empty_struct
+-  update(
+-      wuffs_base__slice_u8 a_x) {
+-    return wuffs_xxhash32__hasher__update(this, a_x);
++  inline wuffs_base__status
++  decode_image_config(
++      wuffs_base__image_config* a_dst,
++      wuffs_base__io_buffer* a_src) {
++    return wuffs_tga__decoder__decode_image_config(this, a_dst, a_src);
+   }
+ 
+-  inline uint32_t
+-  update_u32(
+-      wuffs_base__slice_u8 a_x) {
+-    return wuffs_xxhash32__hasher__update_u32(this, a_x);
++  inline wuffs_base__status
++  decode_frame_config(
++      wuffs_base__frame_config* a_dst,
++      wuffs_base__io_buffer* a_src) {
++    return wuffs_tga__decoder__decode_frame_config(this, a_dst, a_src);
++  }
++
++  inline wuffs_base__status
++  decode_frame(
++      wuffs_base__pixel_buffer* a_dst,
++      wuffs_base__io_buffer* a_src,
++      wuffs_base__pixel_blend a_blend,
++      wuffs_base__slice_u8 a_workbuf,
++      wuffs_base__decode_frame_options* a_opts) {
++    return wuffs_tga__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
++  }
++
++  inline wuffs_base__rect_ie_u32
++  frame_dirty_rect() const {
++    return wuffs_tga__decoder__frame_dirty_rect(this);
+   }
+ 
+   inline uint32_t
+-  checksum_u32() const {
+-    return wuffs_xxhash32__hasher__checksum_u32(this);
++  num_animation_loops() const {
++    return wuffs_tga__decoder__num_animation_loops(this);
++  }
++
++  inline uint64_t
++  num_decoded_frame_configs() const {
++    return wuffs_tga__decoder__num_decoded_frame_configs(this);
++  }
++
++  inline uint64_t
++  num_decoded_frames() const {
++    return wuffs_tga__decoder__num_decoded_frames(this);
++  }
++
++  inline wuffs_base__status
++  restart_frame(
++      uint64_t a_index,
++      uint64_t a_io_position) {
++    return wuffs_tga__decoder__restart_frame(this, a_index, a_io_position);
++  }
++
++  inline wuffs_base__empty_struct
++  set_report_metadata(
++      uint32_t a_fourcc,
++      bool a_report) {
++    return wuffs_tga__decoder__set_report_metadata(this, a_fourcc, a_report);
++  }
++
++  inline wuffs_base__status
++  tell_me_more(
++      wuffs_base__io_buffer* a_dst,
++      wuffs_base__more_information* a_minfo,
++      wuffs_base__io_buffer* a_src) {
++    return wuffs_tga__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
++  }
++
++  inline wuffs_base__range_ii_u64
++  workbuf_len() const {
++    return wuffs_tga__decoder__workbuf_len(this);
+   }
+ 
+ #endif  // __cplusplus
+-};  // struct wuffs_xxhash32__hasher__struct
++};  // struct wuffs_tga__decoder__struct
+ 
+ #endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH32) || defined(WUFFS_NONMONOLITHIC)
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA) || defined(WUFFS_NONMONOLITHIC)
+ 
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH64) || defined(WUFFS_NONMONOLITHIC)
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__VP8) || defined(WUFFS_NONMONOLITHIC)
+ 
+ // ---------------- Status Codes
+ 
+@@ -12671,7 +13728,7 @@ struct wuffs_xxhash32__hasher__struct {
+ 
+ // ---------------- Struct Declarations
+ 
+-typedef struct wuffs_xxhash64__hasher__struct wuffs_xxhash64__hasher;
++typedef struct wuffs_vp8__placeholder__struct wuffs_vp8__placeholder;
+ 
+ #ifdef __cplusplus
+ extern "C" {
+@@ -12686,14 +13743,14 @@ extern "C" {
+ // Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
+ 
+ wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_xxhash64__hasher__initialize(
+-    wuffs_xxhash64__hasher* self,
++wuffs_vp8__placeholder__initialize(
++    wuffs_vp8__placeholder* self,
+     size_t sizeof_star_self,
+     uint64_t wuffs_version,
+     uint32_t options);
+ 
+ size_t
+-sizeof__wuffs_xxhash64__hasher(void);
++sizeof__wuffs_vp8__placeholder(void);
+ 
+ // ---------------- Allocs
+ 
+@@ -12703,54 +13760,13 @@ sizeof__wuffs_xxhash64__hasher(void);
+ // calling free on the returned pointer. That pointer is effectively a C++
+ // std::unique_ptr<T, wuffs_unique_ptr_deleter>.
+ 
+-wuffs_xxhash64__hasher*
+-wuffs_xxhash64__hasher__alloc(void);
+-
+-static inline wuffs_base__hasher_u64*
+-wuffs_xxhash64__hasher__alloc_as__wuffs_base__hasher_u64(void) {
+-  return (wuffs_base__hasher_u64*)(wuffs_xxhash64__hasher__alloc());
+-}
++wuffs_vp8__placeholder*
++wuffs_vp8__placeholder__alloc(void);
+ 
+ // ---------------- Upcasts
+ 
+-static inline wuffs_base__hasher_u64*
+-wuffs_xxhash64__hasher__upcast_as__wuffs_base__hasher_u64(
+-    wuffs_xxhash64__hasher* p) {
+-  return (wuffs_base__hasher_u64*)p;
+-}
+-
+ // ---------------- Public Function Prototypes
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_xxhash64__hasher__get_quirk(
+-    const wuffs_xxhash64__hasher* self,
+-    uint32_t a_key);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_xxhash64__hasher__set_quirk(
+-    wuffs_xxhash64__hasher* self,
+-    uint32_t a_key,
+-    uint64_t a_value);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_xxhash64__hasher__update(
+-    wuffs_xxhash64__hasher* self,
+-    wuffs_base__slice_u8 a_x);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_xxhash64__hasher__update_u64(
+-    wuffs_xxhash64__hasher* self,
+-    wuffs_base__slice_u8 a_x);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_xxhash64__hasher__checksum_u64(
+-    const wuffs_xxhash64__hasher* self);
+-
+ #ifdef __cplusplus
+ }  // extern "C"
+ #endif
+@@ -12764,7 +13780,7 @@ wuffs_xxhash64__hasher__checksum_u64(
+ 
+ #if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
+ 
+-struct wuffs_xxhash64__hasher__struct {
++struct wuffs_vp8__placeholder__struct {
+   // Do not access the private_impl's or private_data's fields directly. There
+   // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
+   // the wuffs_foo__bar__baz functions.
+@@ -12775,37 +13791,20 @@ struct wuffs_xxhash64__hasher__struct {
+   struct {
+     uint32_t magic;
+     uint32_t active_coroutine;
+-    wuffs_base__vtable vtable_for__wuffs_base__hasher_u64;
+     wuffs_base__vtable null_vtable;
+ 
+-    uint64_t f_length_modulo_u64;
+-    bool f_length_overflows_u64;
+-    uint8_t f_padding0;
+-    uint8_t f_padding1;
+-    uint8_t f_padding2;
+-    uint32_t f_buf_len;
+-    uint8_t f_buf_data[32];
+-    uint64_t f_v0;
+-    uint64_t f_v1;
+-    uint64_t f_v2;
+-    uint64_t f_v3;
++    uint32_t f_placeholder;
+   } private_impl;
+ 
+ #ifdef __cplusplus
+ #if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
+-  using unique_ptr = std::unique_ptr<wuffs_xxhash64__hasher, wuffs_unique_ptr_deleter>;
++  using unique_ptr = std::unique_ptr<wuffs_vp8__placeholder, wuffs_unique_ptr_deleter>;
+ 
+   // On failure, the alloc_etc functions return nullptr. They don't throw.
+ 
+   static inline unique_ptr
+   alloc() {
+-    return unique_ptr(wuffs_xxhash64__hasher__alloc());
+-  }
+-
+-  static inline wuffs_base__hasher_u64::unique_ptr
+-  alloc_as__wuffs_base__hasher_u64() {
+-    return wuffs_base__hasher_u64::unique_ptr(
+-        wuffs_xxhash64__hasher__alloc_as__wuffs_base__hasher_u64());
++    return unique_ptr(wuffs_vp8__placeholder__alloc());
+   }
+ #endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
+ 
+@@ -12821,10 +13820,10 @@ struct wuffs_xxhash64__hasher__struct {
+   // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
+   // order to provide convenience methods. These forward on "this", so that you
+   // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
+-  wuffs_xxhash64__hasher__struct() = delete;
+-  wuffs_xxhash64__hasher__struct(const wuffs_xxhash64__hasher__struct&) = delete;
+-  wuffs_xxhash64__hasher__struct& operator=(
+-      const wuffs_xxhash64__hasher__struct&) = delete;
++  wuffs_vp8__placeholder__struct() = delete;
++  wuffs_vp8__placeholder__struct(const wuffs_vp8__placeholder__struct&) = delete;
++  wuffs_vp8__placeholder__struct& operator=(
++      const wuffs_vp8__placeholder__struct&) = delete;
+ #endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
+ 
+ #if !defined(WUFFS_IMPLEMENTATION)
+@@ -12844,9372 +13843,9377 @@ struct wuffs_xxhash64__hasher__struct {
+       size_t sizeof_star_self,
+       uint64_t wuffs_version,
+       uint32_t options) {
+-    return wuffs_xxhash64__hasher__initialize(
++    return wuffs_vp8__placeholder__initialize(
+         this, sizeof_star_self, wuffs_version, options);
+   }
+ 
+-  inline wuffs_base__hasher_u64*
+-  upcast_as__wuffs_base__hasher_u64() {
+-    return (wuffs_base__hasher_u64*)this;
+-  }
++#endif  // __cplusplus
++};  // struct wuffs_vp8__placeholder__struct
+ 
+-  inline uint64_t
+-  get_quirk(
+-      uint32_t a_key) const {
+-    return wuffs_xxhash64__hasher__get_quirk(this, a_key);
+-  }
++#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
+ 
+-  inline wuffs_base__status
+-  set_quirk(
+-      uint32_t a_key,
+-      uint64_t a_value) {
+-    return wuffs_xxhash64__hasher__set_quirk(this, a_key, a_value);
+-  }
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__VP8) || defined(WUFFS_NONMONOLITHIC)
+ 
+-  inline wuffs_base__empty_struct
+-  update(
+-      wuffs_base__slice_u8 a_x) {
+-    return wuffs_xxhash64__hasher__update(this, a_x);
+-  }
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP) || defined(WUFFS_NONMONOLITHIC)
+ 
+-  inline uint64_t
+-  update_u64(
+-      wuffs_base__slice_u8 a_x) {
+-    return wuffs_xxhash64__hasher__update_u64(this, a_x);
+-  }
++// ---------------- Status Codes
+ 
+-  inline uint64_t
+-  checksum_u64() const {
+-    return wuffs_xxhash64__hasher__checksum_u64(this);
+-  }
++extern const char wuffs_wbmp__error__bad_header[];
++extern const char wuffs_wbmp__error__truncated_input[];
+ 
+-#endif  // __cplusplus
+-};  // struct wuffs_xxhash64__hasher__struct
++// ---------------- Public Consts
+ 
+-#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
++#define WUFFS_WBMP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH64) || defined(WUFFS_NONMONOLITHIC)
++// ---------------- Struct Declarations
+ 
+-#if defined(__cplusplus) && defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
++typedef struct wuffs_wbmp__decoder__struct wuffs_wbmp__decoder;
+ 
+-// ---------------- Auxiliary - Base
++#ifdef __cplusplus
++extern "C" {
++#endif
+ 
+-// Auxiliary code is discussed at
+-// https://github.com/google/wuffs/blob/main/doc/note/auxiliary-code.md
++// ---------------- Public Initializer Prototypes
+ 
+-#include <stdio.h>
++// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
++// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
++//
++// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
++// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
+ 
+-#include <string>
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_wbmp__decoder__initialize(
++    wuffs_wbmp__decoder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options);
+ 
+-namespace wuffs_aux {
++size_t
++sizeof__wuffs_wbmp__decoder(void);
+ 
+-using IOBuffer = wuffs_base__io_buffer;
++// ---------------- Allocs
+ 
+-// MemOwner represents ownership of some memory. Dynamically allocated memory
+-// (e.g. from malloc or new) is typically paired with free or delete, invoked
+-// when the std::unique_ptr is destroyed. Statically allocated memory might use
+-// MemOwner(nullptr, &free), even if that statically allocated memory is not
+-// nullptr, since calling free(nullptr) is a no-op.
+-using MemOwner = std::unique_ptr<void, decltype(&free)>;
++// These functions allocate and initialize Wuffs structs. They return NULL if
++// memory allocation fails. If they return non-NULL, there is no need to call
++// wuffs_foo__bar__initialize, but the caller is responsible for eventually
++// calling free on the returned pointer. That pointer is effectively a C++
++// std::unique_ptr<T, wuffs_unique_ptr_deleter>.
+ 
+-namespace sync_io {
++wuffs_wbmp__decoder*
++wuffs_wbmp__decoder__alloc(void);
+ 
+-// --------
++static inline wuffs_base__image_decoder*
++wuffs_wbmp__decoder__alloc_as__wuffs_base__image_decoder(void) {
++  return (wuffs_base__image_decoder*)(wuffs_wbmp__decoder__alloc());
++}
+ 
+-// DynIOBuffer is an IOBuffer that is backed by a dynamically sized byte array.
+-// It owns that backing array and will free it in its destructor.
+-//
+-// The array size can be explicitly extended (by calling the grow method) but,
+-// unlike a C++ std::vector, there is no implicit extension (e.g. by calling
+-// std::vector::insert) and its maximum size is capped by the max_incl
+-// constructor argument.
+-//
+-// It contains an IOBuffer-typed field whose reader side provides access to
+-// previously written bytes and whose writer side provides access to the
+-// allocated but not-yet-written-to slack space. For Go programmers, this slack
+-// space is roughly analogous to the s[len(s):cap(s)] space of a slice s.
+-class DynIOBuffer {
+- public:
+-  enum GrowResult {
+-    OK = 0,
+-    FailedMaxInclExceeded = 1,
+-    FailedOutOfMemory = 2,
+-  };
++// ---------------- Upcasts
+ 
+-  // m_buf holds the dynamically sized byte array and its read/write indexes:
+-  //  - m_buf.meta.wi  is roughly analogous to a Go slice's length.
+-  //  - m_buf.data.len is roughly analogous to a Go slice's capacity. It is
+-  //    also equal to the m_buf.data.ptr malloc/realloc size.
+-  //
+-  // Users should not modify the m_buf.data.ptr or m_buf.data.len fields (as
+-  // they are conceptually private to this class), but they can modify the
+-  // bytes referenced by that pointer-length pair (e.g. compactions).
+-  IOBuffer m_buf;
++static inline wuffs_base__image_decoder*
++wuffs_wbmp__decoder__upcast_as__wuffs_base__image_decoder(
++    wuffs_wbmp__decoder* p) {
++  return (wuffs_base__image_decoder*)p;
++}
+ 
+-  // m_max_incl is an inclusive upper bound on the backing array size.
+-  const uint64_t m_max_incl;
++// ---------------- Public Function Prototypes
+ 
+-  // Constructor and destructor.
+-  explicit DynIOBuffer(uint64_t max_incl);
+-  ~DynIOBuffer();
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_wbmp__decoder__get_quirk(
++    const wuffs_wbmp__decoder* self,
++    uint32_t a_key);
+ 
+-  // Drop frees the byte array and resets m_buf. The DynIOBuffer can still be
+-  // used after a drop call. It just restarts from zero.
+-  void drop();
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_wbmp__decoder__set_quirk(
++    wuffs_wbmp__decoder* self,
++    uint32_t a_key,
++    uint64_t a_value);
+ 
+-  // grow ensures that the byte array size is at least min_incl and at most
+-  // max_incl. It returns FailedMaxInclExceeded if that would require
+-  // allocating more than max_incl bytes, including the case where (min_incl >
+-  // max_incl). It returns FailedOutOfMemory if memory allocation failed.
+-  GrowResult grow(uint64_t min_incl);
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_wbmp__decoder__decode_image_config(
++    wuffs_wbmp__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src);
+ 
+- private:
+-  // Delete the copy and assign constructors.
+-  DynIOBuffer(const DynIOBuffer&) = delete;
+-  DynIOBuffer& operator=(const DynIOBuffer&) = delete;
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_wbmp__decoder__decode_frame_config(
++    wuffs_wbmp__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src);
+ 
+-  static uint64_t round_up(uint64_t min_incl, uint64_t max_incl);
+-};
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_wbmp__decoder__decode_frame(
++    wuffs_wbmp__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts);
+ 
+-// --------
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
++wuffs_wbmp__decoder__frame_dirty_rect(
++    const wuffs_wbmp__decoder* self);
+ 
+-class Input {
+- public:
+-  virtual ~Input();
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_wbmp__decoder__num_animation_loops(
++    const wuffs_wbmp__decoder* self);
+ 
+-  virtual IOBuffer* BringsItsOwnIOBuffer();
+-  virtual std::string CopyIn(IOBuffer* dst, uint64_t history_retain_length) = 0;
+-};
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_wbmp__decoder__num_decoded_frame_configs(
++    const wuffs_wbmp__decoder* self);
+ 
+-// --------
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_wbmp__decoder__num_decoded_frames(
++    const wuffs_wbmp__decoder* self);
+ 
+-// FileInput is an Input that reads from a file source.
+-//
+-// It does not take responsibility for closing the file when done.
+-class FileInput : public Input {
+- public:
+-  FileInput(FILE* f);
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_wbmp__decoder__restart_frame(
++    wuffs_wbmp__decoder* self,
++    uint64_t a_index,
++    uint64_t a_io_position);
+ 
+-  virtual std::string CopyIn(IOBuffer* dst, uint64_t history_retain_length);
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_wbmp__decoder__set_report_metadata(
++    wuffs_wbmp__decoder* self,
++    uint32_t a_fourcc,
++    bool a_report);
+ 
+- private:
+-  FILE* m_f;
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_wbmp__decoder__tell_me_more(
++    wuffs_wbmp__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__more_information* a_minfo,
++    wuffs_base__io_buffer* a_src);
+ 
+-  // Delete the copy and assign constructors.
+-  FileInput(const FileInput&) = delete;
+-  FileInput& operator=(const FileInput&) = delete;
+-};
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_wbmp__decoder__workbuf_len(
++    const wuffs_wbmp__decoder* self);
+ 
+-// --------
++#ifdef __cplusplus
++}  // extern "C"
++#endif
+ 
+-// MemoryInput is an Input that reads from an in-memory source.
++// ---------------- Struct Definitions
++
++// These structs' fields, and the sizeof them, are private implementation
++// details that aren't guaranteed to be stable across Wuffs versions.
+ //
+-// It does not take responsibility for freeing the memory when done.
+-class MemoryInput : public Input {
+- public:
+-  MemoryInput(const char* ptr, size_t len);
+-  MemoryInput(const uint8_t* ptr, size_t len);
++// See https://en.wikipedia.org/wiki/Opaque_pointer#C
+ 
+-  virtual IOBuffer* BringsItsOwnIOBuffer();
+-  virtual std::string CopyIn(IOBuffer* dst, uint64_t history_retain_length);
++#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
+ 
+- private:
+-  IOBuffer m_io;
++struct wuffs_wbmp__decoder__struct {
++  // Do not access the private_impl's or private_data's fields directly. There
++  // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
++  // the wuffs_foo__bar__baz functions.
++  //
++  // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
++  // can be stack allocated when WUFFS_IMPLEMENTATION is defined.
+ 
+-  // Delete the copy and assign constructors.
+-  MemoryInput(const MemoryInput&) = delete;
+-  MemoryInput& operator=(const MemoryInput&) = delete;
+-};
++  struct {
++    uint32_t magic;
++    uint32_t active_coroutine;
++    wuffs_base__vtable vtable_for__wuffs_base__image_decoder;
++    wuffs_base__vtable null_vtable;
+ 
+-// --------
++    uint32_t f_width;
++    uint32_t f_height;
++    uint8_t f_call_sequence;
++    uint64_t f_frame_config_io_position;
++    wuffs_base__pixel_swizzler f_swizzler;
+ 
+-}  // namespace sync_io
++    uint32_t p_decode_image_config;
++    uint32_t p_do_decode_image_config;
++    uint32_t p_decode_frame_config;
++    uint32_t p_do_decode_frame_config;
++    uint32_t p_decode_frame;
++    uint32_t p_do_decode_frame;
++  } private_impl;
+ 
+-}  // namespace wuffs_aux
++  struct {
++    struct {
++      uint32_t v_i;
++      uint32_t v_p;
++    } s_do_decode_image_config;
++    struct {
++      uint64_t v_dst_bytes_per_pixel;
++      uint32_t v_dst_x;
++      uint32_t v_dst_y;
++      uint8_t v_src[1];
++      uint8_t v_c8;
++    } s_do_decode_frame;
++  } private_data;
+ 
+-// ---------------- Auxiliary - CBOR
++#ifdef __cplusplus
++#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
++  using unique_ptr = std::unique_ptr<wuffs_wbmp__decoder, wuffs_unique_ptr_deleter>;
+ 
+-namespace wuffs_aux {
++  // On failure, the alloc_etc functions return nullptr. They don't throw.
+ 
+-struct DecodeCborResult {
+-  DecodeCborResult(std::string&& error_message0, uint64_t cursor_position0);
++  static inline unique_ptr
++  alloc() {
++    return unique_ptr(wuffs_wbmp__decoder__alloc());
++  }
+ 
+-  std::string error_message;
+-  uint64_t cursor_position;
+-};
++  static inline wuffs_base__image_decoder::unique_ptr
++  alloc_as__wuffs_base__image_decoder() {
++    return wuffs_base__image_decoder::unique_ptr(
++        wuffs_wbmp__decoder__alloc_as__wuffs_base__image_decoder());
++  }
++#endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
+ 
+-class DecodeCborCallbacks {
+- public:
+-  virtual ~DecodeCborCallbacks();
++#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
++  // Disallow constructing or copying an object via standard C++ mechanisms,
++  // e.g. the "new" operator, as this struct is intentionally opaque. Its total
++  // size and field layout is not part of the public, stable, memory-safe API.
++  // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
++  // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
++  // their first argument) rather than tweaking bar.private_impl.qux fields.
++  //
++  // In C, we can just leave wuffs_foo__bar as an incomplete type (unless
++  // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
++  // order to provide convenience methods. These forward on "this", so that you
++  // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
++  wuffs_wbmp__decoder__struct() = delete;
++  wuffs_wbmp__decoder__struct(const wuffs_wbmp__decoder__struct&) = delete;
++  wuffs_wbmp__decoder__struct& operator=(
++      const wuffs_wbmp__decoder__struct&) = delete;
++#endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
+ 
+-  // AppendXxx are called for leaf nodes: literals, numbers, strings, etc.
++#if !defined(WUFFS_IMPLEMENTATION)
++  // As above, the size of the struct is not part of the public API, and unless
++  // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
++  // allocated, not stack allocated. Its size is not intended to be known at
++  // compile time, but it is unfortunately divulged as a side effect of
++  // defining C++ convenience methods. Use "sizeof__T()", calling the function,
++  // instead of "sizeof T", invoking the operator. To make the two values
++  // different, so that passing the latter will be rejected by the initialize
++  // function, we add an arbitrary amount of dead weight.
++  uint8_t dead_weight[123000000];  // 123 MB.
++#endif  // !defined(WUFFS_IMPLEMENTATION)
+ 
+-  virtual std::string AppendNull() = 0;
+-  virtual std::string AppendUndefined() = 0;
+-  virtual std::string AppendBool(bool val) = 0;
+-  virtual std::string AppendF64(double val) = 0;
+-  virtual std::string AppendI64(int64_t val) = 0;
+-  virtual std::string AppendU64(uint64_t val) = 0;
+-  virtual std::string AppendByteString(std::string&& val) = 0;
+-  virtual std::string AppendTextString(std::string&& val) = 0;
+-  virtual std::string AppendMinus1MinusX(uint64_t val) = 0;
+-  virtual std::string AppendCborSimpleValue(uint8_t val) = 0;
+-  virtual std::string AppendCborTag(uint64_t val) = 0;
++  inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++  initialize(
++      size_t sizeof_star_self,
++      uint64_t wuffs_version,
++      uint32_t options) {
++    return wuffs_wbmp__decoder__initialize(
++        this, sizeof_star_self, wuffs_version, options);
++  }
+ 
+-  // Push and Pop are called for container nodes: CBOR arrays (lists) and CBOR
+-  // maps (dictionaries).
+-  //
+-  // The flags bits combine exactly one of:
+-  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_NONE
+-  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_LIST
+-  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_DICT
+-  // and exactly one of:
+-  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE
+-  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST
+-  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT
++  inline wuffs_base__image_decoder*
++  upcast_as__wuffs_base__image_decoder() {
++    return (wuffs_base__image_decoder*)this;
++  }
+ 
+-  virtual std::string Push(uint32_t flags) = 0;
+-  virtual std::string Pop(uint32_t flags) = 0;
++  inline uint64_t
++  get_quirk(
++      uint32_t a_key) const {
++    return wuffs_wbmp__decoder__get_quirk(this, a_key);
++  }
+ 
+-  // Done is always the last Callback method called by DecodeCbor, whether or
+-  // not parsing the input as CBOR encountered an error. Even when successful,
+-  // trailing data may remain in input and buffer.
+-  //
+-  // Do not keep a reference to buffer or buffer.data.ptr after Done returns,
+-  // as DecodeCbor may then de-allocate the backing array.
+-  //
+-  // The default Done implementation is a no-op.
+-  virtual void  //
+-  Done(DecodeCborResult& result, sync_io::Input& input, IOBuffer& buffer);
+-};
++  inline wuffs_base__status
++  set_quirk(
++      uint32_t a_key,
++      uint64_t a_value) {
++    return wuffs_wbmp__decoder__set_quirk(this, a_key, a_value);
++  }
+ 
+-// The FooArgBar types add structure to Foo's optional arguments. They wrap
+-// inner representations for several reasons:
+-//  - It provides a home for the DefaultValue static method, for Foo callers
+-//    that want to override some but not all optional arguments.
+-//  - It provides the "Bar" name at Foo call sites, which can help self-
+-//    document Foo calls with many arguemnts.
+-//  - It provides some type safety against accidentally transposing or omitting
+-//    adjacent fundamentally-numeric-typed optional arguments.
++  inline wuffs_base__status
++  decode_image_config(
++      wuffs_base__image_config* a_dst,
++      wuffs_base__io_buffer* a_src) {
++    return wuffs_wbmp__decoder__decode_image_config(this, a_dst, a_src);
++  }
+ 
+-// DecodeCborArgQuirks wraps an optional argument to DecodeCbor.
+-struct DecodeCborArgQuirks {
+-  explicit DecodeCborArgQuirks(wuffs_base__slice_u32 repr0);
+-  explicit DecodeCborArgQuirks(uint32_t* ptr, size_t len);
++  inline wuffs_base__status
++  decode_frame_config(
++      wuffs_base__frame_config* a_dst,
++      wuffs_base__io_buffer* a_src) {
++    return wuffs_wbmp__decoder__decode_frame_config(this, a_dst, a_src);
++  }
+ 
+-  // DefaultValue returns an empty slice.
+-  static DecodeCborArgQuirks DefaultValue();
++  inline wuffs_base__status
++  decode_frame(
++      wuffs_base__pixel_buffer* a_dst,
++      wuffs_base__io_buffer* a_src,
++      wuffs_base__pixel_blend a_blend,
++      wuffs_base__slice_u8 a_workbuf,
++      wuffs_base__decode_frame_options* a_opts) {
++    return wuffs_wbmp__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
++  }
+ 
+-  wuffs_base__slice_u32 repr;
+-};
++  inline wuffs_base__rect_ie_u32
++  frame_dirty_rect() const {
++    return wuffs_wbmp__decoder__frame_dirty_rect(this);
++  }
+ 
+-// DecodeCbor calls callbacks based on the CBOR-formatted data in input.
+-//
+-// On success, the returned error_message is empty and cursor_position counts
+-// the number of bytes consumed. On failure, error_message is non-empty and
+-// cursor_position is the location of the error. That error may be a content
+-// error (invalid CBOR) or an input error (e.g. network failure).
+-DecodeCborResult  //
+-DecodeCbor(DecodeCborCallbacks& callbacks,
+-           sync_io::Input& input,
+-           DecodeCborArgQuirks quirks = DecodeCborArgQuirks::DefaultValue());
++  inline uint32_t
++  num_animation_loops() const {
++    return wuffs_wbmp__decoder__num_animation_loops(this);
++  }
+ 
+-}  // namespace wuffs_aux
++  inline uint64_t
++  num_decoded_frame_configs() const {
++    return wuffs_wbmp__decoder__num_decoded_frame_configs(this);
++  }
+ 
+-// ---------------- Auxiliary - Image
++  inline uint64_t
++  num_decoded_frames() const {
++    return wuffs_wbmp__decoder__num_decoded_frames(this);
++  }
+ 
+-namespace wuffs_aux {
++  inline wuffs_base__status
++  restart_frame(
++      uint64_t a_index,
++      uint64_t a_io_position) {
++    return wuffs_wbmp__decoder__restart_frame(this, a_index, a_io_position);
++  }
+ 
+-struct DecodeImageResult {
+-  DecodeImageResult(MemOwner&& pixbuf_mem_owner0,
+-                    wuffs_base__pixel_buffer pixbuf0,
+-                    std::string&& error_message0);
+-  DecodeImageResult(std::string&& error_message0);
++  inline wuffs_base__empty_struct
++  set_report_metadata(
++      uint32_t a_fourcc,
++      bool a_report) {
++    return wuffs_wbmp__decoder__set_report_metadata(this, a_fourcc, a_report);
++  }
+ 
+-  MemOwner pixbuf_mem_owner;
+-  wuffs_base__pixel_buffer pixbuf;
+-  std::string error_message;
+-};
++  inline wuffs_base__status
++  tell_me_more(
++      wuffs_base__io_buffer* a_dst,
++      wuffs_base__more_information* a_minfo,
++      wuffs_base__io_buffer* a_src) {
++    return wuffs_wbmp__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
++  }
+ 
+-// DecodeImageCallbacks are the callbacks given to DecodeImage. They are always
+-// called in this order:
+-//  1. SelectDecoder
+-//  2. HandleMetadata
+-//  3. SelectPixfmt
+-//  4. AllocPixbuf
+-//  5. AllocWorkbuf
+-//  6. Done
+-//
+-// It may return early - the third callback might not be invoked if the second
+-// one fails - but the final callback (Done) is always invoked.
+-class DecodeImageCallbacks {
+- public:
+-  // AllocPixbufResult holds a memory allocation (the result of malloc or new,
+-  // a statically allocated pointer, etc), or an error message. The memory is
+-  // de-allocated when mem_owner goes out of scope and is destroyed.
+-  struct AllocPixbufResult {
+-    AllocPixbufResult(MemOwner&& mem_owner0, wuffs_base__pixel_buffer pixbuf0);
+-    AllocPixbufResult(std::string&& error_message0);
++  inline wuffs_base__range_ii_u64
++  workbuf_len() const {
++    return wuffs_wbmp__decoder__workbuf_len(this);
++  }
+ 
+-    MemOwner mem_owner;
+-    wuffs_base__pixel_buffer pixbuf;
+-    std::string error_message;
+-  };
++#endif  // __cplusplus
++};  // struct wuffs_wbmp__decoder__struct
+ 
+-  // AllocWorkbufResult holds a memory allocation (the result of malloc or new,
+-  // a statically allocated pointer, etc), or an error message. The memory is
+-  // de-allocated when mem_owner goes out of scope and is destroyed.
+-  struct AllocWorkbufResult {
+-    AllocWorkbufResult(MemOwner&& mem_owner0, wuffs_base__slice_u8 workbuf0);
+-    AllocWorkbufResult(std::string&& error_message0);
++#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
+ 
+-    MemOwner mem_owner;
+-    wuffs_base__slice_u8 workbuf;
+-    std::string error_message;
+-  };
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP) || defined(WUFFS_NONMONOLITHIC)
+ 
+-  virtual ~DecodeImageCallbacks();
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WEBP) || defined(WUFFS_NONMONOLITHIC)
+ 
+-  // SelectDecoder returns the image decoder for the input data's file format.
+-  // Returning a nullptr means failure (DecodeImage_UnsupportedImageFormat).
+-  //
+-  // Common formats will have a FourCC value in the range [1 ..= 0x7FFF_FFFF],
+-  // such as WUFFS_BASE__FOURCC__JPEG. A zero FourCC value means that Wuffs'
+-  // standard library did not recognize the image format but if SelectDecoder
+-  // was overridden, it may examine the input data's starting bytes and still
+-  // provide its own image decoder, e.g. for an exotic image file format that's
+-  // not in Wuffs' standard library. The prefix_etc fields have the same
+-  // meaning as wuffs_base__magic_number_guess_fourcc arguments. SelectDecoder
+-  // implementations should not modify prefix_data's contents.
+-  //
+-  // SelectDecoder might be called more than once, since some image file
+-  // formats can wrap others. For example, a nominal BMP file can actually
+-  // contain a JPEG or a PNG.
+-  //
+-  // The default SelectDecoder accepts the FOURCC codes listed below. For
+-  // modular builds (i.e. when #define'ing WUFFS_CONFIG__MODULES), acceptance
+-  // of the ETC file format is optional (for each value of ETC) and depends on
+-  // the corresponding module to be enabled at compile time (i.e. #define'ing
+-  // WUFFS_CONFIG__MODULE__ETC).
+-  //  - WUFFS_BASE__FOURCC__BMP
+-  //  - WUFFS_BASE__FOURCC__GIF
+-  //  - WUFFS_BASE__FOURCC__JPEG
+-  //  - WUFFS_BASE__FOURCC__NIE
+-  //  - WUFFS_BASE__FOURCC__NPBM
+-  //  - WUFFS_BASE__FOURCC__PNG
+-  //  - WUFFS_BASE__FOURCC__TGA
+-  //  - WUFFS_BASE__FOURCC__WBMP
+-  virtual wuffs_base__image_decoder::unique_ptr  //
+-  SelectDecoder(uint32_t fourcc,
+-                wuffs_base__slice_u8 prefix_data,
+-                bool prefix_closed);
+-
+-  // HandleMetadata acknowledges image metadata. minfo.flavor will be one of:
+-  //  - WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_PASSTHROUGH
+-  //  - WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_PARSED
+-  // If it is ETC__METADATA_RAW_ETC then raw contains the metadata bytes. Those
+-  // bytes should not be retained beyond the the HandleMetadata call.
+-  //
+-  // minfo.metadata__fourcc() will typically match one of the
+-  // DecodeImageArgFlags bits. For example, if (REPORT_METADATA_CHRM |
+-  // REPORT_METADATA_GAMA) was passed to DecodeImage then the metadata FourCC
+-  // will be either WUFFS_BASE__FOURCC__CHRM or WUFFS_BASE__FOURCC__GAMA.
+-  //
+-  // It returns an error message, or an empty string on success.
+-  virtual std::string  //
+-  HandleMetadata(const wuffs_base__more_information& minfo,
+-                 wuffs_base__slice_u8 raw);
+-
+-  // SelectPixfmt returns the destination pixel format for AllocPixbuf. It
+-  // should return wuffs_base__make_pixel_format(etc) called with one of:
+-  //  - WUFFS_BASE__PIXEL_FORMAT__BGR_565
+-  //  - WUFFS_BASE__PIXEL_FORMAT__BGR
+-  //  - WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL
+-  //  - WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE
+-  //  - WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL
+-  //  - WUFFS_BASE__PIXEL_FORMAT__RGB
+-  //  - WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL
+-  //  - WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL
+-  // or return image_config.pixcfg.pixel_format(). The latter means to use the
+-  // image file's natural pixel format. For example, GIF images' natural pixel
+-  // format is an indexed one.
+-  //
+-  // Returning otherwise means failure (DecodeImage_UnsupportedPixelFormat).
+-  //
+-  // The default SelectPixfmt implementation returns
+-  // wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL) which
+-  // is 4 bytes per pixel (8 bits per channel × 4 channels).
+-  virtual wuffs_base__pixel_format  //
+-  SelectPixfmt(const wuffs_base__image_config& image_config);
++// ---------------- Status Codes
+ 
+-  // AllocPixbuf allocates the pixel buffer.
+-  //
+-  // allow_uninitialized_memory will be true if a valid background_color was
+-  // passed to DecodeImage, since the pixel buffer's contents will be
+-  // overwritten with that color after AllocPixbuf returns.
+-  //
+-  // The default AllocPixbuf implementation allocates either uninitialized or
+-  // zeroed memory. Zeroed memory typically corresponds to filling with opaque
+-  // black or transparent black, depending on the pixel format.
+-  virtual AllocPixbufResult  //
+-  AllocPixbuf(const wuffs_base__image_config& image_config,
+-              bool allow_uninitialized_memory);
++extern const char wuffs_webp__error__bad_huffman_code_over_subscribed[];
++extern const char wuffs_webp__error__bad_huffman_code_under_subscribed[];
++extern const char wuffs_webp__error__bad_huffman_code[];
++extern const char wuffs_webp__error__bad_back_reference[];
++extern const char wuffs_webp__error__bad_color_cache[];
++extern const char wuffs_webp__error__bad_header[];
++extern const char wuffs_webp__error__bad_transform[];
++extern const char wuffs_webp__error__short_chunk[];
++extern const char wuffs_webp__error__truncated_input[];
++extern const char wuffs_webp__error__unsupported_number_of_huffman_groups[];
++extern const char wuffs_webp__error__unsupported_transform_after_color_indexing_transform[];
++extern const char wuffs_webp__error__unsupported_webp_file[];
+ 
+-  // AllocWorkbuf allocates the work buffer. The allocated buffer's length
+-  // should be at least len_range.min_incl, but larger allocations (up to
+-  // len_range.max_incl) may have better performance (by using more memory).
+-  //
+-  // The default AllocWorkbuf implementation allocates len_range.max_incl bytes
+-  // of either uninitialized or zeroed memory.
+-  virtual AllocWorkbufResult  //
+-  AllocWorkbuf(wuffs_base__range_ii_u64 len_range,
+-               bool allow_uninitialized_memory);
++// ---------------- Public Consts
+ 
+-  // Done is always the last Callback method called by DecodeImage, whether or
+-  // not parsing the input encountered an error. Even when successful, trailing
+-  // data may remain in input and buffer.
+-  //
+-  // The image_decoder is the one returned by SelectDecoder (if SelectDecoder
+-  // was successful), or a no-op unique_ptr otherwise. Like any unique_ptr,
+-  // ownership moves to the Done implementation.
+-  //
+-  // Do not keep a reference to buffer or buffer.data.ptr after Done returns,
+-  // as DecodeImage may then de-allocate the backing array.
+-  //
+-  // The default Done implementation is a no-op, other than running the
+-  // image_decoder unique_ptr destructor.
+-  virtual void  //
+-  Done(DecodeImageResult& result,
+-       sync_io::Input& input,
+-       IOBuffer& buffer,
+-       wuffs_base__image_decoder::unique_ptr image_decoder);
+-};
++#define WUFFS_WEBP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
+ 
+-extern const char DecodeImage_BufferIsTooShort[];
+-extern const char DecodeImage_MaxInclDimensionExceeded[];
+-extern const char DecodeImage_MaxInclMetadataLengthExceeded[];
+-extern const char DecodeImage_OutOfMemory[];
+-extern const char DecodeImage_UnexpectedEndOfFile[];
+-extern const char DecodeImage_UnsupportedImageFormat[];
+-extern const char DecodeImage_UnsupportedMetadata[];
+-extern const char DecodeImage_UnsupportedPixelBlend[];
+-extern const char DecodeImage_UnsupportedPixelConfiguration[];
+-extern const char DecodeImage_UnsupportedPixelFormat[];
++// ---------------- Struct Declarations
+ 
+-// The FooArgBar types add structure to Foo's optional arguments. They wrap
+-// inner representations for several reasons:
+-//  - It provides a home for the DefaultValue static method, for Foo callers
+-//    that want to override some but not all optional arguments.
+-//  - It provides the "Bar" name at Foo call sites, which can help self-
+-//    document Foo calls with many arguemnts.
+-//  - It provides some type safety against accidentally transposing or omitting
+-//    adjacent fundamentally-numeric-typed optional arguments.
++typedef struct wuffs_webp__decoder__struct wuffs_webp__decoder;
+ 
+-// DecodeImageArgQuirks wraps an optional argument to DecodeImage.
+-struct DecodeImageArgQuirks {
+-  explicit DecodeImageArgQuirks(wuffs_base__slice_u32 repr0);
+-  explicit DecodeImageArgQuirks(uint32_t* ptr, size_t len);
++#ifdef __cplusplus
++extern "C" {
++#endif
+ 
+-  // DefaultValue returns an empty slice.
+-  static DecodeImageArgQuirks DefaultValue();
++// ---------------- Public Initializer Prototypes
+ 
+-  wuffs_base__slice_u32 repr;
+-};
++// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
++// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
++//
++// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
++// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
+ 
+-// DecodeImageArgFlags wraps an optional argument to DecodeImage.
+-struct DecodeImageArgFlags {
+-  explicit DecodeImageArgFlags(uint64_t repr0);
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_webp__decoder__initialize(
++    wuffs_webp__decoder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options);
+ 
+-  // DefaultValue returns 0.
+-  static DecodeImageArgFlags DefaultValue();
++size_t
++sizeof__wuffs_webp__decoder(void);
+ 
+-  // TODO: support all of the REPORT_METADATA_ETC flags, not just CHRM, EXIF,
+-  // GAMA, ICCP, KVP, SRGB and XMP.
++// ---------------- Allocs
+ 
+-  // Background Color.
+-  static constexpr uint64_t REPORT_METADATA_BGCL = 0x0001;
+-  // Primary Chromaticities and White Point.
+-  static constexpr uint64_t REPORT_METADATA_CHRM = 0x0002;
+-  // Exchangeable Image File Format.
+-  static constexpr uint64_t REPORT_METADATA_EXIF = 0x0004;
+-  // Gamma Correction.
+-  static constexpr uint64_t REPORT_METADATA_GAMA = 0x0008;
+-  // International Color Consortium Profile.
+-  static constexpr uint64_t REPORT_METADATA_ICCP = 0x0010;
+-  // Key-Value Pair.
+-  //
+-  // For PNG files, this includes iTXt, tEXt and zTXt chunks. In the
+-  // HandleMetadata callback, the raw argument contains UTF-8 strings.
+-  static constexpr uint64_t REPORT_METADATA_KVP = 0x0020;
+-  // Modification Time.
+-  static constexpr uint64_t REPORT_METADATA_MTIM = 0x0040;
+-  // Offset (2-Dimensional).
+-  static constexpr uint64_t REPORT_METADATA_OFS2 = 0x0080;
+-  // Physical Dimensions.
+-  static constexpr uint64_t REPORT_METADATA_PHYD = 0x0100;
+-  // Standard Red Green Blue (Rendering Intent).
+-  static constexpr uint64_t REPORT_METADATA_SRGB = 0x0200;
+-  // Extensible Metadata Platform.
+-  static constexpr uint64_t REPORT_METADATA_XMP = 0x0400;
++// These functions allocate and initialize Wuffs structs. They return NULL if
++// memory allocation fails. If they return non-NULL, there is no need to call
++// wuffs_foo__bar__initialize, but the caller is responsible for eventually
++// calling free on the returned pointer. That pointer is effectively a C++
++// std::unique_ptr<T, wuffs_unique_ptr_deleter>.
+ 
+-  uint64_t repr;
+-};
++wuffs_webp__decoder*
++wuffs_webp__decoder__alloc(void);
+ 
+-// DecodeImageArgPixelBlend wraps an optional argument to DecodeImage.
+-struct DecodeImageArgPixelBlend {
+-  explicit DecodeImageArgPixelBlend(wuffs_base__pixel_blend repr0);
++static inline wuffs_base__image_decoder*
++wuffs_webp__decoder__alloc_as__wuffs_base__image_decoder(void) {
++  return (wuffs_base__image_decoder*)(wuffs_webp__decoder__alloc());
++}
+ 
+-  // DefaultValue returns WUFFS_BASE__PIXEL_BLEND__SRC.
+-  static DecodeImageArgPixelBlend DefaultValue();
++// ---------------- Upcasts
+ 
+-  wuffs_base__pixel_blend repr;
+-};
++static inline wuffs_base__image_decoder*
++wuffs_webp__decoder__upcast_as__wuffs_base__image_decoder(
++    wuffs_webp__decoder* p) {
++  return (wuffs_base__image_decoder*)p;
++}
+ 
+-// DecodeImageArgBackgroundColor wraps an optional argument to DecodeImage.
+-struct DecodeImageArgBackgroundColor {
+-  explicit DecodeImageArgBackgroundColor(
+-      wuffs_base__color_u32_argb_premul repr0);
++// ---------------- Public Function Prototypes
+ 
+-  // DefaultValue returns 1, an invalid wuffs_base__color_u32_argb_premul.
+-  static DecodeImageArgBackgroundColor DefaultValue();
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_webp__decoder__get_quirk(
++    const wuffs_webp__decoder* self,
++    uint32_t a_key);
+ 
+-  wuffs_base__color_u32_argb_premul repr;
+-};
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_webp__decoder__set_quirk(
++    wuffs_webp__decoder* self,
++    uint32_t a_key,
++    uint64_t a_value);
+ 
+-// DecodeImageArgMaxInclDimension wraps an optional argument to DecodeImage.
+-struct DecodeImageArgMaxInclDimension {
+-  explicit DecodeImageArgMaxInclDimension(uint32_t repr0);
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_webp__decoder__decode_image_config(
++    wuffs_webp__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src);
+ 
+-  // DefaultValue returns 1048575 = 0x000F_FFFF, more than 1 million pixels.
+-  static DecodeImageArgMaxInclDimension DefaultValue();
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_webp__decoder__decode_frame_config(
++    wuffs_webp__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src);
+ 
+-  uint32_t repr;
+-};
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_webp__decoder__decode_frame(
++    wuffs_webp__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts);
+ 
+-// DecodeImageArgMaxInclMetadataLength wraps an optional argument to
+-// DecodeImage.
+-struct DecodeImageArgMaxInclMetadataLength {
+-  explicit DecodeImageArgMaxInclMetadataLength(uint64_t repr0);
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
++wuffs_webp__decoder__frame_dirty_rect(
++    const wuffs_webp__decoder* self);
+ 
+-  // DefaultValue returns 16777215 = 0x00FF_FFFF, one less than 16 MiB.
+-  static DecodeImageArgMaxInclMetadataLength DefaultValue();
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_webp__decoder__num_animation_loops(
++    const wuffs_webp__decoder* self);
+ 
+-  uint64_t repr;
+-};
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_webp__decoder__num_decoded_frame_configs(
++    const wuffs_webp__decoder* self);
+ 
+-// DecodeImage decodes the image data in input. A variety of image file formats
+-// can be decoded, depending on what callbacks.SelectDecoder returns.
+-//
+-// For animated formats, only the first frame is returned, since the API is
+-// simpler for synchronous I/O and having DecodeImage only return when
+-// completely done, but rendering animation often involves handling other
+-// events in between animation frames. To decode multiple frames of animated
+-// images, or for asynchronous I/O (e.g. when decoding an image streamed over
+-// the network), use Wuffs' lower level C API instead of its higher level,
+-// simplified C++ API (the wuffs_aux API).
+-//
+-// The DecodeImageResult's fields depend on whether decoding succeeded:
+-//  - On total success, the error_message is empty and pixbuf.pixcfg.is_valid()
+-//    is true.
+-//  - On partial success (e.g. the input file was truncated but we are still
+-//    able to decode some of the pixels), error_message is non-empty but
+-//    pixbuf.pixcfg.is_valid() is still true. It is up to the caller whether to
+-//    accept or reject partial success.
+-//  - On failure, the error_message is non_empty and pixbuf.pixcfg.is_valid()
+-//    is false.
+-//
+-// The callbacks allocate the pixel buffer memory and work buffer memory. On
+-// success, pixel buffer memory ownership is passed to the DecodeImage caller
+-// as the returned pixbuf_mem_owner. Regardless of success or failure, the work
+-// buffer memory is deleted.
+-//
+-// The pixel_blend (one of the constants listed below) determines how to
+-// composite the decoded image over the pixel buffer's original pixels (as
+-// returned by callbacks.AllocPixbuf):
+-//  - WUFFS_BASE__PIXEL_BLEND__SRC
+-//  - WUFFS_BASE__PIXEL_BLEND__SRC_OVER
+-//
+-// The background_color is used to fill the pixel buffer after
+-// callbacks.AllocPixbuf returns, if it is valid in the
+-// wuffs_base__color_u32_argb_premul__is_valid sense. The default value,
+-// 0x0000_0001, is not valid since its Blue channel value (0x01) is greater
+-// than its Alpha channel value (0x00). A valid background_color will typically
+-// be overwritten when pixel_blend is WUFFS_BASE__PIXEL_BLEND__SRC, but might
+-// still be visible on partial (not total) success or when pixel_blend is
+-// WUFFS_BASE__PIXEL_BLEND__SRC_OVER and the decoded image is not fully opaque.
+-//
+-// Decoding fails (with DecodeImage_MaxInclDimensionExceeded) if the image's
+-// width or height is greater than max_incl_dimension or if any opted-in (via
+-// flags bits) metadata is longer than max_incl_metadata_length.
+-DecodeImageResult  //
+-DecodeImage(DecodeImageCallbacks& callbacks,
+-            sync_io::Input& input,
+-            DecodeImageArgQuirks quirks = DecodeImageArgQuirks::DefaultValue(),
+-            DecodeImageArgFlags flags = DecodeImageArgFlags::DefaultValue(),
+-            DecodeImageArgPixelBlend pixel_blend =
+-                DecodeImageArgPixelBlend::DefaultValue(),
+-            DecodeImageArgBackgroundColor background_color =
+-                DecodeImageArgBackgroundColor::DefaultValue(),
+-            DecodeImageArgMaxInclDimension max_incl_dimension =
+-                DecodeImageArgMaxInclDimension::DefaultValue(),
+-            DecodeImageArgMaxInclMetadataLength max_incl_metadata_length =
+-                DecodeImageArgMaxInclMetadataLength::DefaultValue());
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_webp__decoder__num_decoded_frames(
++    const wuffs_webp__decoder* self);
+ 
+-}  // namespace wuffs_aux
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_webp__decoder__restart_frame(
++    wuffs_webp__decoder* self,
++    uint64_t a_index,
++    uint64_t a_io_position);
+ 
+-// ---------------- Auxiliary - JSON
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_webp__decoder__set_report_metadata(
++    wuffs_webp__decoder* self,
++    uint32_t a_fourcc,
++    bool a_report);
+ 
+-namespace wuffs_aux {
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_webp__decoder__tell_me_more(
++    wuffs_webp__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__more_information* a_minfo,
++    wuffs_base__io_buffer* a_src);
+ 
+-struct DecodeJsonResult {
+-  DecodeJsonResult(std::string&& error_message0, uint64_t cursor_position0);
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_webp__decoder__workbuf_len(
++    const wuffs_webp__decoder* self);
+ 
+-  std::string error_message;
+-  uint64_t cursor_position;
+-};
++#ifdef __cplusplus
++}  // extern "C"
++#endif
+ 
+-class DecodeJsonCallbacks {
+- public:
+-  virtual ~DecodeJsonCallbacks();
++// ---------------- Struct Definitions
+ 
+-  // AppendXxx are called for leaf nodes: literals, numbers and strings. For
+-  // strings, the Callbacks implementation is responsible for tracking map keys
+-  // versus other values.
++// These structs' fields, and the sizeof them, are private implementation
++// details that aren't guaranteed to be stable across Wuffs versions.
++//
++// See https://en.wikipedia.org/wiki/Opaque_pointer#C
+ 
+-  virtual std::string AppendNull() = 0;
+-  virtual std::string AppendBool(bool val) = 0;
+-  virtual std::string AppendF64(double val) = 0;
+-  virtual std::string AppendI64(int64_t val) = 0;
+-  virtual std::string AppendTextString(std::string&& val) = 0;
++#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
+ 
+-  // Push and Pop are called for container nodes: JSON arrays (lists) and JSON
+-  // objects (dictionaries).
++struct wuffs_webp__decoder__struct {
++  // Do not access the private_impl's or private_data's fields directly. There
++  // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
++  // the wuffs_foo__bar__baz functions.
+   //
+-  // The flags bits combine exactly one of:
+-  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_NONE
+-  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_LIST
+-  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_DICT
+-  // and exactly one of:
+-  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE
+-  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST
+-  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT
++  // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
++  // can be stack allocated when WUFFS_IMPLEMENTATION is defined.
+ 
+-  virtual std::string Push(uint32_t flags) = 0;
+-  virtual std::string Pop(uint32_t flags) = 0;
++  struct {
++    uint32_t magic;
++    uint32_t active_coroutine;
++    wuffs_base__vtable vtable_for__wuffs_base__image_decoder;
++    wuffs_base__vtable null_vtable;
+ 
+-  // Done is always the last Callback method called by DecodeJson, whether or
+-  // not parsing the input as JSON encountered an error. Even when successful,
+-  // trailing data may remain in input and buffer. See "Unintuitive JSON
+-  // Parsing" (https://nullprogram.com/blog/2019/12/28/) which discusses JSON
+-  // parsing and when it stops.
+-  //
+-  // Do not keep a reference to buffer or buffer.data.ptr after Done returns,
+-  // as DecodeJson may then de-allocate the backing array.
+-  //
+-  // The default Done implementation is a no-op.
+-  virtual void  //
+-  Done(DecodeJsonResult& result, sync_io::Input& input, IOBuffer& buffer);
+-};
++    uint32_t f_pixfmt;
++    uint32_t f_width;
++    uint32_t f_height;
++    uint8_t f_call_sequence;
++    uint8_t f_code_length_code_lengths[19];
++    bool f_sub_chunk_has_padding;
++    uint64_t f_frame_config_io_position;
++    uint32_t f_riff_chunk_length;
++    uint32_t f_sub_chunk_length;
++    uint32_t f_bits;
++    uint32_t f_n_bits;
++    bool f_seen_transform[4];
++    uint8_t f_transform_type[4];
++    uint8_t f_transform_tile_size_log2[4];
++    uint32_t f_n_transforms;
++    uint32_t f_color_cache_bits;
++    uint32_t f_overall_color_cache_bits;
++    uint32_t f_overall_tile_size_log2;
++    uint32_t f_overall_n_huffman_groups;
++    uint32_t f_ht_n_symbols;
++    uint32_t f_ht_code_lengths_remaining;
++    uint32_t f_color_indexing_palette_size;
++    uint32_t f_color_indexing_width;
++    uint32_t f_workbuf_offset_for_transform[4];
++    uint32_t f_workbuf_offset_for_color_indexing;
++    wuffs_base__pixel_swizzler f_swizzler;
+ 
+-extern const char DecodeJson_BadJsonPointer[];
+-extern const char DecodeJson_NoMatch[];
++    uint32_t p_decode_huffman_groups;
++    uint32_t p_decode_huffman_tree;
++    uint32_t p_decode_huffman_tree_simple;
++    uint32_t p_decode_code_length_code_lengths;
++    uint32_t p_build_code_lengths;
++    uint32_t p_decode_pixels_slow;
++    uint32_t p_decode_image_config;
++    uint32_t p_do_decode_image_config;
++    uint32_t p_do_decode_image_config_limited;
++    uint32_t p_do_decode_image_config_limited_vp8l;
++    uint32_t p_decode_frame_config;
++    uint32_t p_do_decode_frame_config;
++    uint32_t p_decode_frame;
++    uint32_t p_do_decode_frame;
++    uint32_t p_decode_transform;
++    uint32_t p_decode_color_cache_parameters;
++    uint32_t p_decode_hg_table;
++    uint32_t p_decode_pixels;
++  } private_impl;
+ 
+-// The FooArgBar types add structure to Foo's optional arguments. They wrap
+-// inner representations for several reasons:
+-//  - It provides a home for the DefaultValue static method, for Foo callers
+-//    that want to override some but not all optional arguments.
+-//  - It provides the "Bar" name at Foo call sites, which can help self-
+-//    document Foo calls with many arguemnts.
+-//  - It provides some type safety against accidentally transposing or omitting
+-//    adjacent fundamentally-numeric-typed optional arguments.
++  struct {
++    uint8_t f_palette[1024];
++    uint32_t f_color_cache[2048];
++    uint16_t f_codes[2328];
++    uint16_t f_code_lengths[2328];
++    uint16_t f_code_lengths_huffman_nodes[37];
++    uint16_t f_huffman_nodes[256][6267];
+ 
+-// DecodeJsonArgQuirks wraps an optional argument to DecodeJson.
+-struct DecodeJsonArgQuirks {
+-  explicit DecodeJsonArgQuirks(wuffs_base__slice_u32 repr0);
+-  explicit DecodeJsonArgQuirks(uint32_t* ptr, size_t len);
++    struct {
++      uint32_t v_hg;
++      uint32_t v_ht;
++    } s_decode_huffman_groups;
++    struct {
++      uint32_t v_use_second_symbol;
++      uint32_t v_first_symbol_n_bits;
++      uint32_t v_symbol0;
++      uint32_t v_base_offset;
++    } s_decode_huffman_tree_simple;
++    struct {
++      uint32_t v_n_codes;
++      uint32_t v_i;
++    } s_decode_code_length_code_lengths;
++    struct {
++      uint32_t v_length_n_bits;
++      uint16_t v_prev_code_length;
++      uint32_t v_s;
++      uint32_t v_s_max;
++      uint16_t v_node;
++      uint16_t v_repeat_value;
++      uint32_t v_repeat_n_bits;
++    } s_build_code_lengths;
++    struct {
++      uint64_t v_p;
++      uint64_t v_p_max;
++      uint32_t v_tile_size_log2;
++      uint32_t v_width_in_tiles;
++      uint32_t v_x;
++      uint32_t v_y;
++      uint32_t v_hg;
++      uint16_t v_node;
++      uint32_t v_color;
++      uint32_t v_back_ref_len_n_bits;
++      uint32_t v_back_ref_len_minus_1;
++      uint32_t v_back_ref_dist_n_bits;
++      uint32_t v_back_ref_dist_premap_minus_1;
++      uint64_t v_color_cache_p;
++    } s_decode_pixels_slow;
++    struct {
++      uint64_t scratch;
++    } s_do_decode_image_config;
++    struct {
++      uint64_t scratch;
++    } s_do_decode_image_config_limited;
++    struct {
++      uint64_t scratch;
++    } s_do_decode_image_config_limited_vp8l;
++    struct {
++      uint32_t v_width;
++    } s_do_decode_frame;
++    struct {
++      uint32_t v_transform_type;
++      uint32_t v_tile_size_log2;
++    } s_decode_transform;
++    struct {
++      uint32_t v_tile_size_log2;
++    } s_decode_hg_table;
++  } private_data;
+ 
+-  // DefaultValue returns an empty slice.
+-  static DecodeJsonArgQuirks DefaultValue();
++#ifdef __cplusplus
++#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
++  using unique_ptr = std::unique_ptr<wuffs_webp__decoder, wuffs_unique_ptr_deleter>;
+ 
+-  wuffs_base__slice_u32 repr;
+-};
++  // On failure, the alloc_etc functions return nullptr. They don't throw.
+ 
+-// DecodeJsonArgJsonPointer wraps an optional argument to DecodeJson.
+-struct DecodeJsonArgJsonPointer {
+-  explicit DecodeJsonArgJsonPointer(std::string repr0);
++  static inline unique_ptr
++  alloc() {
++    return unique_ptr(wuffs_webp__decoder__alloc());
++  }
+ 
+-  // DefaultValue returns an empty string.
+-  static DecodeJsonArgJsonPointer DefaultValue();
++  static inline wuffs_base__image_decoder::unique_ptr
++  alloc_as__wuffs_base__image_decoder() {
++    return wuffs_base__image_decoder::unique_ptr(
++        wuffs_webp__decoder__alloc_as__wuffs_base__image_decoder());
++  }
++#endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
+ 
+-  std::string repr;
+-};
++#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
++  // Disallow constructing or copying an object via standard C++ mechanisms,
++  // e.g. the "new" operator, as this struct is intentionally opaque. Its total
++  // size and field layout is not part of the public, stable, memory-safe API.
++  // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
++  // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
++  // their first argument) rather than tweaking bar.private_impl.qux fields.
++  //
++  // In C, we can just leave wuffs_foo__bar as an incomplete type (unless
++  // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
++  // order to provide convenience methods. These forward on "this", so that you
++  // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
++  wuffs_webp__decoder__struct() = delete;
++  wuffs_webp__decoder__struct(const wuffs_webp__decoder__struct&) = delete;
++  wuffs_webp__decoder__struct& operator=(
++      const wuffs_webp__decoder__struct&) = delete;
++#endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
+ 
+-// DecodeJson calls callbacks based on the JSON-formatted data in input.
+-//
+-// On success, the returned error_message is empty and cursor_position counts
+-// the number of bytes consumed. On failure, error_message is non-empty and
+-// cursor_position is the location of the error. That error may be a content
+-// error (invalid JSON) or an input error (e.g. network failure).
+-//
+-// json_pointer is a query in the JSON Pointer (RFC 6901) syntax. The callbacks
+-// run for the input's sub-node that matches the query. DecodeJson_NoMatch is
+-// returned if no matching sub-node was found. The empty query matches the
+-// input's root node, consistent with JSON Pointer semantics.
+-//
+-// The JSON Pointer implementation is greedy: duplicate keys are not rejected
+-// but only the first match for each '/'-separated fragment is followed.
+-DecodeJsonResult  //
+-DecodeJson(DecodeJsonCallbacks& callbacks,
+-           sync_io::Input& input,
+-           DecodeJsonArgQuirks quirks = DecodeJsonArgQuirks::DefaultValue(),
+-           DecodeJsonArgJsonPointer json_pointer =
+-               DecodeJsonArgJsonPointer::DefaultValue());
++#if !defined(WUFFS_IMPLEMENTATION)
++  // As above, the size of the struct is not part of the public API, and unless
++  // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
++  // allocated, not stack allocated. Its size is not intended to be known at
++  // compile time, but it is unfortunately divulged as a side effect of
++  // defining C++ convenience methods. Use "sizeof__T()", calling the function,
++  // instead of "sizeof T", invoking the operator. To make the two values
++  // different, so that passing the latter will be rejected by the initialize
++  // function, we add an arbitrary amount of dead weight.
++  uint8_t dead_weight[123000000];  // 123 MB.
++#endif  // !defined(WUFFS_IMPLEMENTATION)
+ 
+-}  // namespace wuffs_aux
++  inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++  initialize(
++      size_t sizeof_star_self,
++      uint64_t wuffs_version,
++      uint32_t options) {
++    return wuffs_webp__decoder__initialize(
++        this, sizeof_star_self, wuffs_version, options);
++  }
+ 
+-#endif  // defined(__cplusplus) && defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
++  inline wuffs_base__image_decoder*
++  upcast_as__wuffs_base__image_decoder() {
++    return (wuffs_base__image_decoder*)this;
++  }
+ 
+-// ‼ WUFFS C HEADER ENDS HERE.
+-#ifdef WUFFS_IMPLEMENTATION
++  inline uint64_t
++  get_quirk(
++      uint32_t a_key) const {
++    return wuffs_webp__decoder__get_quirk(this, a_key);
++  }
+ 
+-#ifdef __cplusplus
+-extern "C" {
+-#endif
++  inline wuffs_base__status
++  set_quirk(
++      uint32_t a_key,
++      uint64_t a_value) {
++    return wuffs_webp__decoder__set_quirk(this, a_key, a_value);
++  }
+ 
+-// ---------------- Fundamentals
++  inline wuffs_base__status
++  decode_image_config(
++      wuffs_base__image_config* a_dst,
++      wuffs_base__io_buffer* a_src) {
++    return wuffs_webp__decoder__decode_image_config(this, a_dst, a_src);
++  }
+ 
+-// WUFFS_BASE__MAGIC is a magic number to check that initializers are called.
+-// It's not foolproof, given C doesn't automatically zero memory before use,
+-// but it should catch 99.99% of cases.
+-//
+-// Its (non-zero) value is arbitrary, based on md5sum("wuffs").
+-#define WUFFS_BASE__MAGIC ((uint32_t)0x3CCB6C71)
++  inline wuffs_base__status
++  decode_frame_config(
++      wuffs_base__frame_config* a_dst,
++      wuffs_base__io_buffer* a_src) {
++    return wuffs_webp__decoder__decode_frame_config(this, a_dst, a_src);
++  }
+ 
+-// WUFFS_BASE__DISABLED is a magic number to indicate that a non-recoverable
+-// error was previously encountered.
+-//
+-// Its (non-zero) value is arbitrary, based on md5sum("disabled").
+-#define WUFFS_BASE__DISABLED ((uint32_t)0x075AE3D2)
++  inline wuffs_base__status
++  decode_frame(
++      wuffs_base__pixel_buffer* a_dst,
++      wuffs_base__io_buffer* a_src,
++      wuffs_base__pixel_blend a_blend,
++      wuffs_base__slice_u8 a_workbuf,
++      wuffs_base__decode_frame_options* a_opts) {
++    return wuffs_webp__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
++  }
+ 
+-// Use switch cases for coroutine suspension points, similar to the technique
+-// in https://www.chiark.greenend.org.uk/~sgtatham/coroutines.html
+-//
+-// The implicit fallthrough is intentional.
+-//
+-// We use trivial macros instead of an explicit assignment and case statement
+-// so that clang-format doesn't get confused by the unusual "case"s.
+-#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0 case 0:;
+-#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT(n) \
+-  coro_susp_point = n;                            \
+-  case n:;
++  inline wuffs_base__rect_ie_u32
++  frame_dirty_rect() const {
++    return wuffs_webp__decoder__frame_dirty_rect(this);
++  }
+ 
+-#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(n) \
+-  if (!status.repr) {                                           \
+-    goto ok;                                                    \
+-  } else if (*status.repr != '$') {                             \
+-    goto exit;                                                  \
+-  }                                                             \
+-  coro_susp_point = n;                                          \
+-  goto suspend;                                                 \
+-  case n:;
++  inline uint32_t
++  num_animation_loops() const {
++    return wuffs_webp__decoder__num_animation_loops(this);
++  }
+ 
+-// The "defined(__clang__)" isn't redundant. While vanilla clang defines
+-// __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not.
+-#if defined(__GNUC__) || defined(__clang__)
+-#define WUFFS_BASE__LIKELY(expr) (__builtin_expect(!!(expr), 1))
+-#define WUFFS_BASE__UNLIKELY(expr) (__builtin_expect(!!(expr), 0))
+-#else
+-#define WUFFS_BASE__LIKELY(expr) (expr)
+-#define WUFFS_BASE__UNLIKELY(expr) (expr)
+-#endif
++  inline uint64_t
++  num_decoded_frame_configs() const {
++    return wuffs_webp__decoder__num_decoded_frame_configs(this);
++  }
+ 
+-// --------
++  inline uint64_t
++  num_decoded_frames() const {
++    return wuffs_webp__decoder__num_decoded_frames(this);
++  }
+ 
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wcast-qual"
+-#endif
+-static inline uint8_t*  //
+-wuffs_base__strip_const_from_u8_ptr(const uint8_t* ptr) {
+-  return (uint8_t*)ptr;
+-}
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
++  inline wuffs_base__status
++  restart_frame(
++      uint64_t a_index,
++      uint64_t a_io_position) {
++    return wuffs_webp__decoder__restart_frame(this, a_index, a_io_position);
++  }
+ 
+-// --------
++  inline wuffs_base__empty_struct
++  set_report_metadata(
++      uint32_t a_fourcc,
++      bool a_report) {
++    return wuffs_webp__decoder__set_report_metadata(this, a_fourcc, a_report);
++  }
+ 
+-static inline wuffs_base__empty_struct  //
+-wuffs_base__ignore_status(wuffs_base__status z) {
+-  return wuffs_base__make_empty_struct();
+-}
++  inline wuffs_base__status
++  tell_me_more(
++      wuffs_base__io_buffer* a_dst,
++      wuffs_base__more_information* a_minfo,
++      wuffs_base__io_buffer* a_src) {
++    return wuffs_webp__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
++  }
+ 
+-static inline wuffs_base__status  //
+-wuffs_base__status__ensure_not_a_suspension(wuffs_base__status z) {
+-  if (z.repr && (*z.repr == '$')) {
+-    z.repr = wuffs_base__error__cannot_return_a_suspension;
++  inline wuffs_base__range_ii_u64
++  workbuf_len() const {
++    return wuffs_webp__decoder__workbuf_len(this);
+   }
+-  return z;
+-}
+ 
+-// --------
++#endif  // __cplusplus
++};  // struct wuffs_webp__decoder__struct
+ 
+-// wuffs_base__iterate_total_advance returns the exclusive pointer-offset at
+-// which iteration should stop. The overall slice has length total_len, each
+-// iteration's sub-slice has length iter_len and are placed iter_advance apart.
+-//
+-// The iter_advance may not be larger than iter_len. The iter_advance may be
+-// smaller than iter_len, in which case the sub-slices will overlap.
+-//
+-// The return value r satisfies ((0 <= r) && (r <= total_len)).
+-//
+-// For example, if total_len = 15, iter_len = 5 and iter_advance = 3, there are
+-// four iterations at offsets 0, 3, 6 and 9. This function returns 12.
+-//
+-// 0123456789012345
+-// [....]
+-//    [....]
+-//       [....]
+-//          [....]
+-//             $
+-// 0123456789012345
+-//
+-// For example, if total_len = 15, iter_len = 5 and iter_advance = 5, there are
+-// three iterations at offsets 0, 5 and 10. This function returns 15.
++#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
++
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WEBP) || defined(WUFFS_NONMONOLITHIC)
++
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH32) || defined(WUFFS_NONMONOLITHIC)
++
++// ---------------- Status Codes
++
++// ---------------- Public Consts
++
++// ---------------- Struct Declarations
++
++typedef struct wuffs_xxhash32__hasher__struct wuffs_xxhash32__hasher;
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++// ---------------- Public Initializer Prototypes
++
++// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
++// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
+ //
+-// 0123456789012345
+-// [....]
+-//      [....]
+-//           [....]
+-//                $
+-// 0123456789012345
+-static inline size_t  //
+-wuffs_base__iterate_total_advance(size_t total_len,
+-                                  size_t iter_len,
+-                                  size_t iter_advance) {
+-  if (total_len >= iter_len) {
+-    size_t n = total_len - iter_len;
+-    return ((n / iter_advance) * iter_advance) + iter_advance;
+-  }
+-  return 0;
+-}
++// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
++// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
+ 
+-// ---------------- Numeric Types
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_xxhash32__hasher__initialize(
++    wuffs_xxhash32__hasher* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options);
+ 
+-extern const uint8_t wuffs_base__low_bits_mask__u8[8];
+-extern const uint16_t wuffs_base__low_bits_mask__u16[16];
+-extern const uint32_t wuffs_base__low_bits_mask__u32[32];
+-extern const uint64_t wuffs_base__low_bits_mask__u64[64];
++size_t
++sizeof__wuffs_xxhash32__hasher(void);
+ 
+-#define WUFFS_BASE__LOW_BITS_MASK__U8(n) (wuffs_base__low_bits_mask__u8[n])
+-#define WUFFS_BASE__LOW_BITS_MASK__U16(n) (wuffs_base__low_bits_mask__u16[n])
+-#define WUFFS_BASE__LOW_BITS_MASK__U32(n) (wuffs_base__low_bits_mask__u32[n])
+-#define WUFFS_BASE__LOW_BITS_MASK__U64(n) (wuffs_base__low_bits_mask__u64[n])
++// ---------------- Allocs
+ 
+-// --------
++// These functions allocate and initialize Wuffs structs. They return NULL if
++// memory allocation fails. If they return non-NULL, there is no need to call
++// wuffs_foo__bar__initialize, but the caller is responsible for eventually
++// calling free on the returned pointer. That pointer is effectively a C++
++// std::unique_ptr<T, wuffs_unique_ptr_deleter>.
+ 
+-static inline void  //
+-wuffs_base__u8__sat_add_indirect(uint8_t* x, uint8_t y) {
+-  *x = wuffs_base__u8__sat_add(*x, y);
+-}
++wuffs_xxhash32__hasher*
++wuffs_xxhash32__hasher__alloc(void);
+ 
+-static inline void  //
+-wuffs_base__u8__sat_sub_indirect(uint8_t* x, uint8_t y) {
+-  *x = wuffs_base__u8__sat_sub(*x, y);
++static inline wuffs_base__hasher_u32*
++wuffs_xxhash32__hasher__alloc_as__wuffs_base__hasher_u32(void) {
++  return (wuffs_base__hasher_u32*)(wuffs_xxhash32__hasher__alloc());
+ }
+ 
+-static inline void  //
+-wuffs_base__u16__sat_add_indirect(uint16_t* x, uint16_t y) {
+-  *x = wuffs_base__u16__sat_add(*x, y);
+-}
++// ---------------- Upcasts
+ 
+-static inline void  //
+-wuffs_base__u16__sat_sub_indirect(uint16_t* x, uint16_t y) {
+-  *x = wuffs_base__u16__sat_sub(*x, y);
++static inline wuffs_base__hasher_u32*
++wuffs_xxhash32__hasher__upcast_as__wuffs_base__hasher_u32(
++    wuffs_xxhash32__hasher* p) {
++  return (wuffs_base__hasher_u32*)p;
+ }
+ 
+-static inline void  //
+-wuffs_base__u32__sat_add_indirect(uint32_t* x, uint32_t y) {
+-  *x = wuffs_base__u32__sat_add(*x, y);
+-}
++// ---------------- Public Function Prototypes
+ 
+-static inline void  //
+-wuffs_base__u32__sat_sub_indirect(uint32_t* x, uint32_t y) {
+-  *x = wuffs_base__u32__sat_sub(*x, y);
+-}
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_xxhash32__hasher__get_quirk(
++    const wuffs_xxhash32__hasher* self,
++    uint32_t a_key);
+ 
+-static inline void  //
+-wuffs_base__u64__sat_add_indirect(uint64_t* x, uint64_t y) {
+-  *x = wuffs_base__u64__sat_add(*x, y);
+-}
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_xxhash32__hasher__set_quirk(
++    wuffs_xxhash32__hasher* self,
++    uint32_t a_key,
++    uint64_t a_value);
+ 
+-static inline void  //
+-wuffs_base__u64__sat_sub_indirect(uint64_t* x, uint64_t y) {
+-  *x = wuffs_base__u64__sat_sub(*x, y);
+-}
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_xxhash32__hasher__update(
++    wuffs_xxhash32__hasher* self,
++    wuffs_base__slice_u8 a_x);
+ 
+-// ---------------- Numeric Types (Utility)
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_xxhash32__hasher__update_u32(
++    wuffs_xxhash32__hasher* self,
++    wuffs_base__slice_u8 a_x);
+ 
+-#define wuffs_base__utility__sign_extend_convert_u16_u32(a) \
+-  ((uint32_t)(int32_t)(int16_t)(a))
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_xxhash32__hasher__checksum_u32(
++    const wuffs_xxhash32__hasher* self);
+ 
+-#define wuffs_base__utility__sign_extend_rshift_u32(a, n) \
+-  ((uint32_t)(((int32_t)(a)) >> (n)))
++#ifdef __cplusplus
++}  // extern "C"
++#endif
+ 
+-#define wuffs_base__utility__sign_extend_rshift_u64(a, n) \
+-  ((uint64_t)(((int64_t)(a)) >> (n)))
++// ---------------- Struct Definitions
+ 
+-// ---------------- Slices and Tables
++// These structs' fields, and the sizeof them, are private implementation
++// details that aren't guaranteed to be stable across Wuffs versions.
++//
++// See https://en.wikipedia.org/wiki/Opaque_pointer#C
+ 
+-// wuffs_base__slice_u8__prefix returns up to the first up_to bytes of s.
+-static inline wuffs_base__slice_u8  //
+-wuffs_base__slice_u8__prefix(wuffs_base__slice_u8 s, uint64_t up_to) {
+-  if (((uint64_t)(s.len)) > up_to) {
+-    s.len = ((size_t)up_to);
++#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
++
++struct wuffs_xxhash32__hasher__struct {
++  // Do not access the private_impl's or private_data's fields directly. There
++  // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
++  // the wuffs_foo__bar__baz functions.
++  //
++  // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
++  // can be stack allocated when WUFFS_IMPLEMENTATION is defined.
++
++  struct {
++    uint32_t magic;
++    uint32_t active_coroutine;
++    wuffs_base__vtable vtable_for__wuffs_base__hasher_u32;
++    wuffs_base__vtable null_vtable;
++
++    uint32_t f_length_modulo_u32;
++    bool f_length_overflows_u32;
++    uint8_t f_padding0;
++    uint8_t f_padding1;
++    uint8_t f_buf_len;
++    uint8_t f_buf_data[16];
++    uint32_t f_v0;
++    uint32_t f_v1;
++    uint32_t f_v2;
++    uint32_t f_v3;
++  } private_impl;
++
++#ifdef __cplusplus
++#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
++  using unique_ptr = std::unique_ptr<wuffs_xxhash32__hasher, wuffs_unique_ptr_deleter>;
++
++  // On failure, the alloc_etc functions return nullptr. They don't throw.
++
++  static inline unique_ptr
++  alloc() {
++    return unique_ptr(wuffs_xxhash32__hasher__alloc());
+   }
+-  return s;
+-}
+ 
+-// wuffs_base__slice_u8__suffix returns up to the last up_to bytes of s.
+-static inline wuffs_base__slice_u8  //
+-wuffs_base__slice_u8__suffix(wuffs_base__slice_u8 s, uint64_t up_to) {
+-  if (((uint64_t)(s.len)) > up_to) {
+-    s.ptr += ((uint64_t)(s.len)) - up_to;
+-    s.len = ((size_t)up_to);
++  static inline wuffs_base__hasher_u32::unique_ptr
++  alloc_as__wuffs_base__hasher_u32() {
++    return wuffs_base__hasher_u32::unique_ptr(
++        wuffs_xxhash32__hasher__alloc_as__wuffs_base__hasher_u32());
+   }
+-  return s;
+-}
++#endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
+ 
+-// wuffs_base__slice_u8__copy_from_slice calls memmove(dst.ptr, src.ptr, len)
+-// where len is the minimum of dst.len and src.len.
+-//
+-// Passing a wuffs_base__slice_u8 with all fields NULL or zero (a valid, empty
+-// slice) is valid and results in a no-op.
+-static inline uint64_t  //
+-wuffs_base__slice_u8__copy_from_slice(wuffs_base__slice_u8 dst,
+-                                      wuffs_base__slice_u8 src) {
+-  size_t len = dst.len < src.len ? dst.len : src.len;
+-  if (len > 0) {
+-    memmove(dst.ptr, src.ptr, len);
++#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
++  // Disallow constructing or copying an object via standard C++ mechanisms,
++  // e.g. the "new" operator, as this struct is intentionally opaque. Its total
++  // size and field layout is not part of the public, stable, memory-safe API.
++  // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
++  // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
++  // their first argument) rather than tweaking bar.private_impl.qux fields.
++  //
++  // In C, we can just leave wuffs_foo__bar as an incomplete type (unless
++  // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
++  // order to provide convenience methods. These forward on "this", so that you
++  // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
++  wuffs_xxhash32__hasher__struct() = delete;
++  wuffs_xxhash32__hasher__struct(const wuffs_xxhash32__hasher__struct&) = delete;
++  wuffs_xxhash32__hasher__struct& operator=(
++      const wuffs_xxhash32__hasher__struct&) = delete;
++#endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
++
++#if !defined(WUFFS_IMPLEMENTATION)
++  // As above, the size of the struct is not part of the public API, and unless
++  // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
++  // allocated, not stack allocated. Its size is not intended to be known at
++  // compile time, but it is unfortunately divulged as a side effect of
++  // defining C++ convenience methods. Use "sizeof__T()", calling the function,
++  // instead of "sizeof T", invoking the operator. To make the two values
++  // different, so that passing the latter will be rejected by the initialize
++  // function, we add an arbitrary amount of dead weight.
++  uint8_t dead_weight[123000000];  // 123 MB.
++#endif  // !defined(WUFFS_IMPLEMENTATION)
++
++  inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++  initialize(
++      size_t sizeof_star_self,
++      uint64_t wuffs_version,
++      uint32_t options) {
++    return wuffs_xxhash32__hasher__initialize(
++        this, sizeof_star_self, wuffs_version, options);
+   }
+-  return len;
+-}
+ 
+-static inline wuffs_base__empty_struct  //
+-wuffs_base__bulk_load_host_endian(void* ptr,
+-                                  size_t len,
+-                                  wuffs_base__slice_u8 src) {
+-  if (len && (len <= src.len)) {
+-    memmove(ptr, src.ptr, len);
++  inline wuffs_base__hasher_u32*
++  upcast_as__wuffs_base__hasher_u32() {
++    return (wuffs_base__hasher_u32*)this;
+   }
+-  return wuffs_base__make_empty_struct();
+-}
+ 
+-static inline wuffs_base__empty_struct  //
+-wuffs_base__bulk_memset(void* ptr, size_t len, uint8_t byte_value) {
+-  if (len) {
+-    memset(ptr, byte_value, len);
++  inline uint64_t
++  get_quirk(
++      uint32_t a_key) const {
++    return wuffs_xxhash32__hasher__get_quirk(this, a_key);
+   }
+-  return wuffs_base__make_empty_struct();
+-}
+ 
+-static inline wuffs_base__empty_struct  //
+-wuffs_base__bulk_save_host_endian(void* ptr,
+-                                  size_t len,
+-                                  wuffs_base__slice_u8 dst) {
+-  if (len && (len <= dst.len)) {
+-    memmove(dst.ptr, ptr, len);
++  inline wuffs_base__status
++  set_quirk(
++      uint32_t a_key,
++      uint64_t a_value) {
++    return wuffs_xxhash32__hasher__set_quirk(this, a_key, a_value);
+   }
+-  return wuffs_base__make_empty_struct();
+-}
+ 
+-// --------
++  inline wuffs_base__empty_struct
++  update(
++      wuffs_base__slice_u8 a_x) {
++    return wuffs_xxhash32__hasher__update(this, a_x);
++  }
+ 
+-static inline wuffs_base__slice_u8  //
+-wuffs_base__table_u8__row_u32(wuffs_base__table_u8 t, uint32_t y) {
+-  if (y < t.height) {
+-    return wuffs_base__make_slice_u8(t.ptr + (t.stride * y), t.width);
++  inline uint32_t
++  update_u32(
++      wuffs_base__slice_u8 a_x) {
++    return wuffs_xxhash32__hasher__update_u32(this, a_x);
+   }
+-  return wuffs_base__make_slice_u8(NULL, 0);
+-}
+ 
+-// ---------------- Slices and Tables (Utility)
++  inline uint32_t
++  checksum_u32() const {
++    return wuffs_xxhash32__hasher__checksum_u32(this);
++  }
+ 
+-#define wuffs_base__utility__empty_slice_u8 wuffs_base__empty_slice_u8
++#endif  // __cplusplus
++};  // struct wuffs_xxhash32__hasher__struct
+ 
+-// ---------------- Ranges and Rects
++#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
+ 
+-static inline uint32_t  //
+-wuffs_base__range_ii_u32__get_min_incl(const wuffs_base__range_ii_u32* r) {
+-  return r->min_incl;
+-}
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH32) || defined(WUFFS_NONMONOLITHIC)
+ 
+-static inline uint32_t  //
+-wuffs_base__range_ii_u32__get_max_incl(const wuffs_base__range_ii_u32* r) {
+-  return r->max_incl;
+-}
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH64) || defined(WUFFS_NONMONOLITHIC)
+ 
+-static inline uint32_t  //
+-wuffs_base__range_ie_u32__get_min_incl(const wuffs_base__range_ie_u32* r) {
+-  return r->min_incl;
+-}
++// ---------------- Status Codes
+ 
+-static inline uint32_t  //
+-wuffs_base__range_ie_u32__get_max_excl(const wuffs_base__range_ie_u32* r) {
+-  return r->max_excl;
+-}
++// ---------------- Public Consts
+ 
+-static inline uint64_t  //
+-wuffs_base__range_ii_u64__get_min_incl(const wuffs_base__range_ii_u64* r) {
+-  return r->min_incl;
+-}
++// ---------------- Struct Declarations
+ 
+-static inline uint64_t  //
+-wuffs_base__range_ii_u64__get_max_incl(const wuffs_base__range_ii_u64* r) {
+-  return r->max_incl;
+-}
++typedef struct wuffs_xxhash64__hasher__struct wuffs_xxhash64__hasher;
+ 
+-static inline uint64_t  //
+-wuffs_base__range_ie_u64__get_min_incl(const wuffs_base__range_ie_u64* r) {
+-  return r->min_incl;
+-}
++#ifdef __cplusplus
++extern "C" {
++#endif
+ 
+-static inline uint64_t  //
+-wuffs_base__range_ie_u64__get_max_excl(const wuffs_base__range_ie_u64* r) {
+-  return r->max_excl;
+-}
++// ---------------- Public Initializer Prototypes
+ 
+-// ---------------- Ranges and Rects (Utility)
++// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
++// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
++//
++// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
++// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
+ 
+-#define wuffs_base__utility__empty_range_ii_u32 wuffs_base__empty_range_ii_u32
+-#define wuffs_base__utility__empty_range_ie_u32 wuffs_base__empty_range_ie_u32
+-#define wuffs_base__utility__empty_range_ii_u64 wuffs_base__empty_range_ii_u64
+-#define wuffs_base__utility__empty_range_ie_u64 wuffs_base__empty_range_ie_u64
+-#define wuffs_base__utility__empty_rect_ii_u32 wuffs_base__empty_rect_ii_u32
+-#define wuffs_base__utility__empty_rect_ie_u32 wuffs_base__empty_rect_ie_u32
+-#define wuffs_base__utility__make_range_ii_u32 wuffs_base__make_range_ii_u32
+-#define wuffs_base__utility__make_range_ie_u32 wuffs_base__make_range_ie_u32
+-#define wuffs_base__utility__make_range_ii_u64 wuffs_base__make_range_ii_u64
+-#define wuffs_base__utility__make_range_ie_u64 wuffs_base__make_range_ie_u64
+-#define wuffs_base__utility__make_rect_ii_u32 wuffs_base__make_rect_ii_u32
+-#define wuffs_base__utility__make_rect_ie_u32 wuffs_base__make_rect_ie_u32
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_xxhash64__hasher__initialize(
++    wuffs_xxhash64__hasher* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options);
+ 
+-// ---------------- I/O
++size_t
++sizeof__wuffs_xxhash64__hasher(void);
+ 
+-static inline uint64_t  //
+-wuffs_base__io__count_since(uint64_t mark, uint64_t index) {
+-  if (index >= mark) {
+-    return index - mark;
+-  }
+-  return 0;
+-}
++// ---------------- Allocs
+ 
+-// TODO: drop the "const" in "const uint8_t* ptr". Some though required about
+-// the base.io_reader.since method returning a mutable "slice base.u8".
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wcast-qual"
+-#endif
+-static inline wuffs_base__slice_u8  //
+-wuffs_base__io__since(uint64_t mark, uint64_t index, const uint8_t* ptr) {
+-  if (index >= mark) {
+-    return wuffs_base__make_slice_u8(((uint8_t*)ptr) + mark,
+-                                     ((size_t)(index - mark)));
+-  }
+-  return wuffs_base__make_slice_u8(NULL, 0);
+-}
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
++// These functions allocate and initialize Wuffs structs. They return NULL if
++// memory allocation fails. If they return non-NULL, there is no need to call
++// wuffs_foo__bar__initialize, but the caller is responsible for eventually
++// calling free on the returned pointer. That pointer is effectively a C++
++// std::unique_ptr<T, wuffs_unique_ptr_deleter>.
+ 
+-// --------
++wuffs_xxhash64__hasher*
++wuffs_xxhash64__hasher__alloc(void);
+ 
+-static inline void  //
+-wuffs_base__io_reader__limit(const uint8_t** ptr_io2_r,
+-                             const uint8_t* iop_r,
+-                             uint64_t limit) {
+-  if (((uint64_t)(*ptr_io2_r - iop_r)) > limit) {
+-    *ptr_io2_r = iop_r + limit;
+-  }
++static inline wuffs_base__hasher_u64*
++wuffs_xxhash64__hasher__alloc_as__wuffs_base__hasher_u64(void) {
++  return (wuffs_base__hasher_u64*)(wuffs_xxhash64__hasher__alloc());
+ }
+ 
+-static inline uint32_t  //
+-wuffs_base__io_reader__limited_copy_u32_to_slice(const uint8_t** ptr_iop_r,
+-                                                 const uint8_t* io2_r,
+-                                                 uint32_t length,
+-                                                 wuffs_base__slice_u8 dst) {
+-  const uint8_t* iop_r = *ptr_iop_r;
+-  size_t n = dst.len;
+-  if (n > length) {
+-    n = length;
+-  }
+-  if (n > ((size_t)(io2_r - iop_r))) {
+-    n = (size_t)(io2_r - iop_r);
+-  }
+-  if (n > 0) {
+-    memmove(dst.ptr, iop_r, n);
+-    *ptr_iop_r += n;
+-  }
+-  return (uint32_t)(n);
++// ---------------- Upcasts
++
++static inline wuffs_base__hasher_u64*
++wuffs_xxhash64__hasher__upcast_as__wuffs_base__hasher_u64(
++    wuffs_xxhash64__hasher* p) {
++  return (wuffs_base__hasher_u64*)p;
+ }
+ 
+-// wuffs_base__io_reader__match7 returns whether the io_reader's upcoming bytes
+-// start with the given prefix (up to 7 bytes long). It is peek-like, not
+-// read-like, in that there are no side-effects.
+-//
+-// The low 3 bits of a hold the prefix length, n.
+-//
+-// The high 56 bits of a hold the prefix itself, in little-endian order. The
+-// first prefix byte is in bits 8..=15, the second prefix byte is in bits
+-// 16..=23, etc. The high (8 * (7 - n)) bits are ignored.
+-//
+-// There are three possible return values:
+-//  - 0 means success.
+-//  - 1 means inconclusive, equivalent to "$short read".
+-//  - 2 means failure.
+-static inline uint32_t  //
+-wuffs_base__io_reader__match7(const uint8_t* iop_r,
+-                              const uint8_t* io2_r,
+-                              wuffs_base__io_buffer* r,
+-                              uint64_t a) {
+-  uint32_t n = a & 7;
+-  a >>= 8;
+-  if ((io2_r - iop_r) >= 8) {
+-    uint64_t x = wuffs_base__peek_u64le__no_bounds_check(iop_r);
+-    uint32_t shift = 8 * (8 - n);
+-    return ((a << shift) == (x << shift)) ? 0 : 2;
+-  }
+-  for (; n > 0; n--) {
+-    if (iop_r >= io2_r) {
+-      return (r && r->meta.closed) ? 2 : 1;
+-    } else if (*iop_r != ((uint8_t)(a))) {
+-      return 2;
+-    }
+-    iop_r++;
+-    a >>= 8;
+-  }
+-  return 0;
+-}
++// ---------------- Public Function Prototypes
+ 
+-static inline wuffs_base__io_buffer*  //
+-wuffs_base__io_reader__set(wuffs_base__io_buffer* b,
+-                           const uint8_t** ptr_iop_r,
+-                           const uint8_t** ptr_io0_r,
+-                           const uint8_t** ptr_io1_r,
+-                           const uint8_t** ptr_io2_r,
+-                           wuffs_base__slice_u8 data,
+-                           uint64_t history_position) {
+-  b->data = data;
+-  b->meta.wi = data.len;
+-  b->meta.ri = 0;
+-  b->meta.pos = history_position;
+-  b->meta.closed = false;
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_xxhash64__hasher__get_quirk(
++    const wuffs_xxhash64__hasher* self,
++    uint32_t a_key);
+ 
+-  *ptr_iop_r = data.ptr;
+-  *ptr_io0_r = data.ptr;
+-  *ptr_io1_r = data.ptr;
+-  *ptr_io2_r = data.ptr + data.len;
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_xxhash64__hasher__set_quirk(
++    wuffs_xxhash64__hasher* self,
++    uint32_t a_key,
++    uint64_t a_value);
+ 
+-  return b;
+-}
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_xxhash64__hasher__update(
++    wuffs_xxhash64__hasher* self,
++    wuffs_base__slice_u8 a_x);
+ 
+-// --------
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_xxhash64__hasher__update_u64(
++    wuffs_xxhash64__hasher* self,
++    wuffs_base__slice_u8 a_x);
+ 
+-static inline uint64_t  //
+-wuffs_base__io_writer__copy_from_slice(uint8_t** ptr_iop_w,
+-                                       uint8_t* io2_w,
+-                                       wuffs_base__slice_u8 src) {
+-  uint8_t* iop_w = *ptr_iop_w;
+-  size_t n = src.len;
+-  if (n > ((size_t)(io2_w - iop_w))) {
+-    n = (size_t)(io2_w - iop_w);
+-  }
+-  if (n > 0) {
+-    memmove(iop_w, src.ptr, n);
+-    *ptr_iop_w += n;
+-  }
+-  return (uint64_t)(n);
+-}
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_xxhash64__hasher__checksum_u64(
++    const wuffs_xxhash64__hasher* self);
+ 
+-static inline void  //
+-wuffs_base__io_writer__limit(uint8_t** ptr_io2_w,
+-                             uint8_t* iop_w,
+-                             uint64_t limit) {
+-  if (((uint64_t)(*ptr_io2_w - iop_w)) > limit) {
+-    *ptr_io2_w = iop_w + limit;
+-  }
+-}
++#ifdef __cplusplus
++}  // extern "C"
++#endif
+ 
+-static inline uint32_t  //
+-wuffs_base__io_writer__limited_copy_u32_from_history(uint8_t** ptr_iop_w,
+-                                                     uint8_t* io0_w,
+-                                                     uint8_t* io2_w,
+-                                                     uint32_t length,
+-                                                     uint32_t distance) {
+-  if (!distance) {
+-    return 0;
+-  }
+-  uint8_t* p = *ptr_iop_w;
+-  if ((size_t)(p - io0_w) < (size_t)(distance)) {
+-    return 0;
+-  }
+-  uint8_t* q = p - distance;
+-  size_t n = (size_t)(io2_w - p);
+-  if ((size_t)(length) > n) {
+-    length = (uint32_t)(n);
+-  } else {
+-    n = (size_t)(length);
+-  }
+-  // TODO: unrolling by 3 seems best for the std/deflate benchmarks, but that
+-  // is mostly because 3 is the minimum length for the deflate format. This
+-  // function implementation shouldn't overfit to that one format. Perhaps the
+-  // limited_copy_u32_from_history Wuffs method should also take an unroll hint
+-  // argument, and the cgen can look if that argument is the constant
+-  // expression '3'.
+-  //
+-  // See also wuffs_base__io_writer__limited_copy_u32_from_history_fast below.
+-  for (; n >= 3; n -= 3) {
+-    *p++ = *q++;
+-    *p++ = *q++;
+-    *p++ = *q++;
+-  }
+-  for (; n; n--) {
+-    *p++ = *q++;
+-  }
+-  *ptr_iop_w = p;
+-  return length;
+-}
++// ---------------- Struct Definitions
+ 
+-// wuffs_base__io_writer__limited_copy_u32_from_history_fast is like the
+-// wuffs_base__io_writer__limited_copy_u32_from_history function above, but has
+-// stronger pre-conditions.
++// These structs' fields, and the sizeof them, are private implementation
++// details that aren't guaranteed to be stable across Wuffs versions.
+ //
+-// The caller needs to prove that:
+-//  - length   <= (io2_w      - *ptr_iop_w)
+-//  - distance >= 1
+-//  - distance <= (*ptr_iop_w - io0_w)
+-static inline uint32_t  //
+-wuffs_base__io_writer__limited_copy_u32_from_history_fast(uint8_t** ptr_iop_w,
+-                                                          uint8_t* io0_w,
+-                                                          uint8_t* io2_w,
+-                                                          uint32_t length,
+-                                                          uint32_t distance) {
+-  uint8_t* p = *ptr_iop_w;
+-  uint8_t* q = p - distance;
+-  uint32_t n = length;
+-  for (; n >= 3; n -= 3) {
+-    *p++ = *q++;
+-    *p++ = *q++;
+-    *p++ = *q++;
+-  }
+-  for (; n; n--) {
+-    *p++ = *q++;
++// See https://en.wikipedia.org/wiki/Opaque_pointer#C
++
++#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
++
++struct wuffs_xxhash64__hasher__struct {
++  // Do not access the private_impl's or private_data's fields directly. There
++  // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
++  // the wuffs_foo__bar__baz functions.
++  //
++  // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
++  // can be stack allocated when WUFFS_IMPLEMENTATION is defined.
++
++  struct {
++    uint32_t magic;
++    uint32_t active_coroutine;
++    wuffs_base__vtable vtable_for__wuffs_base__hasher_u64;
++    wuffs_base__vtable null_vtable;
++
++    uint64_t f_length_modulo_u64;
++    bool f_length_overflows_u64;
++    uint8_t f_padding0;
++    uint8_t f_padding1;
++    uint8_t f_padding2;
++    uint32_t f_buf_len;
++    uint8_t f_buf_data[32];
++    uint64_t f_v0;
++    uint64_t f_v1;
++    uint64_t f_v2;
++    uint64_t f_v3;
++  } private_impl;
++
++#ifdef __cplusplus
++#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
++  using unique_ptr = std::unique_ptr<wuffs_xxhash64__hasher, wuffs_unique_ptr_deleter>;
++
++  // On failure, the alloc_etc functions return nullptr. They don't throw.
++
++  static inline unique_ptr
++  alloc() {
++    return unique_ptr(wuffs_xxhash64__hasher__alloc());
+   }
+-  *ptr_iop_w = p;
+-  return length;
+-}
+ 
+-// wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast
+-// copies the previous byte (the one immediately before *ptr_iop_w), copying 8
+-// byte chunks at a time. Each chunk contains 8 repetitions of the same byte.
+-//
+-// In terms of number of bytes copied, length is rounded up to a multiple of 8.
+-// As a special case, a zero length rounds up to 8 (even though 0 is already a
+-// multiple of 8), since there is always at least one 8 byte chunk copied.
+-//
+-// In terms of advancing *ptr_iop_w, length is not rounded up.
+-//
+-// The caller needs to prove that:
+-//  - (length + 8) <= (io2_w      - *ptr_iop_w)
+-//  - distance     == 1
+-//  - distance     <= (*ptr_iop_w - io0_w)
+-static inline uint32_t  //
+-wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast(
+-    uint8_t** ptr_iop_w,
+-    uint8_t* io0_w,
+-    uint8_t* io2_w,
+-    uint32_t length,
+-    uint32_t distance) {
+-  uint8_t* p = *ptr_iop_w;
+-  uint64_t x = p[-1];
+-  x |= x << 8;
+-  x |= x << 16;
+-  x |= x << 32;
+-  uint32_t n = length;
+-  while (1) {
+-    wuffs_base__poke_u64le__no_bounds_check(p, x);
+-    if (n <= 8) {
+-      p += n;
+-      break;
+-    }
+-    p += 8;
+-    n -= 8;
++  static inline wuffs_base__hasher_u64::unique_ptr
++  alloc_as__wuffs_base__hasher_u64() {
++    return wuffs_base__hasher_u64::unique_ptr(
++        wuffs_xxhash64__hasher__alloc_as__wuffs_base__hasher_u64());
+   }
+-  *ptr_iop_w = p;
+-  return length;
+-}
++#endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
+ 
+-// wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast is
+-// like the wuffs_base__io_writer__limited_copy_u32_from_history_fast function
+-// above, but copies 8 byte chunks at a time.
+-//
+-// In terms of number of bytes copied, length is rounded up to a multiple of 8.
+-// As a special case, a zero length rounds up to 8 (even though 0 is already a
+-// multiple of 8), since there is always at least one 8 byte chunk copied.
+-//
+-// In terms of advancing *ptr_iop_w, length is not rounded up.
+-//
+-// The caller needs to prove that:
+-//  - (length + 8) <= (io2_w      - *ptr_iop_w)
+-//  - distance     >= 8
+-//  - distance     <= (*ptr_iop_w - io0_w)
+-static inline uint32_t  //
+-wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast(
+-    uint8_t** ptr_iop_w,
+-    uint8_t* io0_w,
+-    uint8_t* io2_w,
+-    uint32_t length,
+-    uint32_t distance) {
+-  uint8_t* p = *ptr_iop_w;
+-  uint8_t* q = p - distance;
+-  uint32_t n = length;
+-  while (1) {
+-    memcpy(p, q, 8);
+-    if (n <= 8) {
+-      p += n;
+-      break;
+-    }
+-    p += 8;
+-    q += 8;
+-    n -= 8;
++#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
++  // Disallow constructing or copying an object via standard C++ mechanisms,
++  // e.g. the "new" operator, as this struct is intentionally opaque. Its total
++  // size and field layout is not part of the public, stable, memory-safe API.
++  // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
++  // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
++  // their first argument) rather than tweaking bar.private_impl.qux fields.
++  //
++  // In C, we can just leave wuffs_foo__bar as an incomplete type (unless
++  // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
++  // order to provide convenience methods. These forward on "this", so that you
++  // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
++  wuffs_xxhash64__hasher__struct() = delete;
++  wuffs_xxhash64__hasher__struct(const wuffs_xxhash64__hasher__struct&) = delete;
++  wuffs_xxhash64__hasher__struct& operator=(
++      const wuffs_xxhash64__hasher__struct&) = delete;
++#endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
++
++#if !defined(WUFFS_IMPLEMENTATION)
++  // As above, the size of the struct is not part of the public API, and unless
++  // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
++  // allocated, not stack allocated. Its size is not intended to be known at
++  // compile time, but it is unfortunately divulged as a side effect of
++  // defining C++ convenience methods. Use "sizeof__T()", calling the function,
++  // instead of "sizeof T", invoking the operator. To make the two values
++  // different, so that passing the latter will be rejected by the initialize
++  // function, we add an arbitrary amount of dead weight.
++  uint8_t dead_weight[123000000];  // 123 MB.
++#endif  // !defined(WUFFS_IMPLEMENTATION)
++
++  inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++  initialize(
++      size_t sizeof_star_self,
++      uint64_t wuffs_version,
++      uint32_t options) {
++    return wuffs_xxhash64__hasher__initialize(
++        this, sizeof_star_self, wuffs_version, options);
+   }
+-  *ptr_iop_w = p;
+-  return length;
+-}
+ 
+-static inline uint32_t  //
+-wuffs_base__io_writer__limited_copy_u32_from_reader(uint8_t** ptr_iop_w,
+-                                                    uint8_t* io2_w,
+-                                                    uint32_t length,
+-                                                    const uint8_t** ptr_iop_r,
+-                                                    const uint8_t* io2_r) {
+-  uint8_t* iop_w = *ptr_iop_w;
+-  size_t n = length;
+-  if (n > ((size_t)(io2_w - iop_w))) {
+-    n = (size_t)(io2_w - iop_w);
++  inline wuffs_base__hasher_u64*
++  upcast_as__wuffs_base__hasher_u64() {
++    return (wuffs_base__hasher_u64*)this;
+   }
+-  const uint8_t* iop_r = *ptr_iop_r;
+-  if (n > ((size_t)(io2_r - iop_r))) {
+-    n = (size_t)(io2_r - iop_r);
++
++  inline uint64_t
++  get_quirk(
++      uint32_t a_key) const {
++    return wuffs_xxhash64__hasher__get_quirk(this, a_key);
+   }
+-  if (n > 0) {
+-    memmove(iop_w, iop_r, n);
+-    *ptr_iop_w += n;
+-    *ptr_iop_r += n;
++
++  inline wuffs_base__status
++  set_quirk(
++      uint32_t a_key,
++      uint64_t a_value) {
++    return wuffs_xxhash64__hasher__set_quirk(this, a_key, a_value);
+   }
+-  return (uint32_t)(n);
+-}
+ 
+-static inline uint32_t  //
+-wuffs_base__io_writer__limited_copy_u32_from_slice(uint8_t** ptr_iop_w,
+-                                                   uint8_t* io2_w,
+-                                                   uint32_t length,
+-                                                   wuffs_base__slice_u8 src) {
+-  uint8_t* iop_w = *ptr_iop_w;
+-  size_t n = src.len;
+-  if (n > length) {
+-    n = length;
++  inline wuffs_base__empty_struct
++  update(
++      wuffs_base__slice_u8 a_x) {
++    return wuffs_xxhash64__hasher__update(this, a_x);
+   }
+-  if (n > ((size_t)(io2_w - iop_w))) {
+-    n = (size_t)(io2_w - iop_w);
++
++  inline uint64_t
++  update_u64(
++      wuffs_base__slice_u8 a_x) {
++    return wuffs_xxhash64__hasher__update_u64(this, a_x);
+   }
+-  if (n > 0) {
+-    memmove(iop_w, src.ptr, n);
+-    *ptr_iop_w += n;
++
++  inline uint64_t
++  checksum_u64() const {
++    return wuffs_xxhash64__hasher__checksum_u64(this);
+   }
+-  return (uint32_t)(n);
+-}
+ 
+-static inline wuffs_base__io_buffer*  //
+-wuffs_base__io_writer__set(wuffs_base__io_buffer* b,
+-                           uint8_t** ptr_iop_w,
+-                           uint8_t** ptr_io0_w,
+-                           uint8_t** ptr_io1_w,
+-                           uint8_t** ptr_io2_w,
+-                           wuffs_base__slice_u8 data,
+-                           uint64_t history_position) {
+-  b->data = data;
+-  b->meta.wi = 0;
+-  b->meta.ri = 0;
+-  b->meta.pos = history_position;
+-  b->meta.closed = false;
++#endif  // __cplusplus
++};  // struct wuffs_xxhash64__hasher__struct
+ 
+-  *ptr_iop_w = data.ptr;
+-  *ptr_io0_w = data.ptr;
+-  *ptr_io1_w = data.ptr;
+-  *ptr_io2_w = data.ptr + data.len;
++#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
+ 
+-  return b;
+-}
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH64) || defined(WUFFS_NONMONOLITHIC)
+ 
+-// ---------------- I/O (Utility)
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XZ) || defined(WUFFS_NONMONOLITHIC)
+ 
+-#define wuffs_base__utility__empty_io_reader wuffs_base__empty_io_reader
+-#define wuffs_base__utility__empty_io_writer wuffs_base__empty_io_writer
++// ---------------- Status Codes
+ 
+-// ---------------- Tokens
++extern const char wuffs_xz__error__bad_bcj_offset[];
++extern const char wuffs_xz__error__bad_block_header[];
++extern const char wuffs_xz__error__bad_checksum[];
++extern const char wuffs_xz__error__bad_filter[];
++extern const char wuffs_xz__error__bad_footer[];
++extern const char wuffs_xz__error__bad_header[];
++extern const char wuffs_xz__error__bad_header_concatenated_stream[];
++extern const char wuffs_xz__error__bad_index[];
++extern const char wuffs_xz__error__bad_padding[];
++extern const char wuffs_xz__error__truncated_input[];
++extern const char wuffs_xz__error__unsupported_checksum_algorithm[];
++extern const char wuffs_xz__error__unsupported_filter[];
++extern const char wuffs_xz__error__unsupported_filter_combination[];
+ 
+-// ---------------- Tokens (Utility)
++// ---------------- Public Consts
+ 
+-// ---------------- Memory Allocation
++#define WUFFS_XZ__QUIRK_DECODE_STANDALONE_CONCATENATED_STREAMS 2021322752u
+ 
+-// ---------------- Images
++#define WUFFS_XZ__DECODER_DST_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0u
+ 
+-WUFFS_BASE__MAYBE_STATIC uint64_t  //
+-wuffs_base__pixel_swizzler__limited_swizzle_u32_interleaved_from_reader(
+-    const wuffs_base__pixel_swizzler* p,
+-    uint32_t up_to_num_pixels,
+-    wuffs_base__slice_u8 dst,
+-    wuffs_base__slice_u8 dst_palette,
+-    const uint8_t** ptr_iop_r,
+-    const uint8_t* io2_r);
++#define WUFFS_XZ__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 4294967568u
+ 
+-WUFFS_BASE__MAYBE_STATIC uint64_t  //
+-wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
+-    const wuffs_base__pixel_swizzler* p,
+-    wuffs_base__slice_u8 dst,
+-    wuffs_base__slice_u8 dst_palette,
+-    const uint8_t** ptr_iop_r,
+-    const uint8_t* io2_r);
++// ---------------- Struct Declarations
+ 
+-WUFFS_BASE__MAYBE_STATIC uint64_t  //
+-wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(
+-    const wuffs_base__pixel_swizzler* p,
+-    wuffs_base__slice_u8 dst,
+-    wuffs_base__slice_u8 dst_palette,
+-    uint64_t num_pixels);
++typedef struct wuffs_xz__decoder__struct wuffs_xz__decoder;
+ 
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status  //
+-wuffs_base__pixel_swizzler__swizzle_ycck(
+-    const wuffs_base__pixel_swizzler* p,
+-    wuffs_base__pixel_buffer* dst,
+-    wuffs_base__slice_u8 dst_palette,
+-    uint32_t width,
+-    uint32_t height,
+-    wuffs_base__slice_u8 src0,
+-    wuffs_base__slice_u8 src1,
+-    wuffs_base__slice_u8 src2,
+-    wuffs_base__slice_u8 src3,
+-    uint32_t width0,
+-    uint32_t width1,
+-    uint32_t width2,
+-    uint32_t width3,
+-    uint32_t height0,
+-    uint32_t height1,
+-    uint32_t height2,
+-    uint32_t height3,
+-    uint32_t stride0,
+-    uint32_t stride1,
+-    uint32_t stride2,
+-    uint32_t stride3,
+-    uint8_t h0,
+-    uint8_t h1,
+-    uint8_t h2,
+-    uint8_t h3,
+-    uint8_t v0,
+-    uint8_t v1,
+-    uint8_t v2,
+-    uint8_t v3,
+-    bool is_rgb_or_cmyk,
+-    bool triangle_filter_for_2to1,
+-    wuffs_base__slice_u8 scratch_buffer_2k);
++#ifdef __cplusplus
++extern "C" {
++#endif
+ 
+-// ---------------- Images (Utility)
++// ---------------- Public Initializer Prototypes
+ 
+-#define wuffs_base__utility__make_pixel_format wuffs_base__make_pixel_format
++// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
++// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
++//
++// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
++// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
+ 
+-// ---------------- String Conversions
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_xz__decoder__initialize(
++    wuffs_xz__decoder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options);
+ 
+-// ---------------- Unicode and UTF-8
++size_t
++sizeof__wuffs_xz__decoder(void);
+ 
+-// ----------------
++// ---------------- Allocs
+ 
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
+-    defined(WUFFS_CONFIG__MODULE__BASE__CORE)
++// These functions allocate and initialize Wuffs structs. They return NULL if
++// memory allocation fails. If they return non-NULL, there is no need to call
++// wuffs_foo__bar__initialize, but the caller is responsible for eventually
++// calling free on the returned pointer. That pointer is effectively a C++
++// std::unique_ptr<T, wuffs_unique_ptr_deleter>.
+ 
+-const uint8_t wuffs_base__low_bits_mask__u8[8] = {
+-    0x00, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F,
+-};
++wuffs_xz__decoder*
++wuffs_xz__decoder__alloc(void);
+ 
+-const uint16_t wuffs_base__low_bits_mask__u16[16] = {
+-    0x0000, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F, 0x003F, 0x007F,
+-    0x00FF, 0x01FF, 0x03FF, 0x07FF, 0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF,
+-};
++static inline wuffs_base__io_transformer*
++wuffs_xz__decoder__alloc_as__wuffs_base__io_transformer(void) {
++  return (wuffs_base__io_transformer*)(wuffs_xz__decoder__alloc());
++}
+ 
+-const uint32_t wuffs_base__low_bits_mask__u32[32] = {
+-    0x00000000, 0x00000001, 0x00000003, 0x00000007, 0x0000000F, 0x0000001F,
+-    0x0000003F, 0x0000007F, 0x000000FF, 0x000001FF, 0x000003FF, 0x000007FF,
+-    0x00000FFF, 0x00001FFF, 0x00003FFF, 0x00007FFF, 0x0000FFFF, 0x0001FFFF,
+-    0x0003FFFF, 0x0007FFFF, 0x000FFFFF, 0x001FFFFF, 0x003FFFFF, 0x007FFFFF,
+-    0x00FFFFFF, 0x01FFFFFF, 0x03FFFFFF, 0x07FFFFFF, 0x0FFFFFFF, 0x1FFFFFFF,
+-    0x3FFFFFFF, 0x7FFFFFFF,
+-};
++// ---------------- Upcasts
+ 
+-const uint64_t wuffs_base__low_bits_mask__u64[64] = {
+-    0x0000000000000000, 0x0000000000000001, 0x0000000000000003,
+-    0x0000000000000007, 0x000000000000000F, 0x000000000000001F,
+-    0x000000000000003F, 0x000000000000007F, 0x00000000000000FF,
+-    0x00000000000001FF, 0x00000000000003FF, 0x00000000000007FF,
+-    0x0000000000000FFF, 0x0000000000001FFF, 0x0000000000003FFF,
+-    0x0000000000007FFF, 0x000000000000FFFF, 0x000000000001FFFF,
+-    0x000000000003FFFF, 0x000000000007FFFF, 0x00000000000FFFFF,
+-    0x00000000001FFFFF, 0x00000000003FFFFF, 0x00000000007FFFFF,
+-    0x0000000000FFFFFF, 0x0000000001FFFFFF, 0x0000000003FFFFFF,
+-    0x0000000007FFFFFF, 0x000000000FFFFFFF, 0x000000001FFFFFFF,
+-    0x000000003FFFFFFF, 0x000000007FFFFFFF, 0x00000000FFFFFFFF,
+-    0x00000001FFFFFFFF, 0x00000003FFFFFFFF, 0x00000007FFFFFFFF,
+-    0x0000000FFFFFFFFF, 0x0000001FFFFFFFFF, 0x0000003FFFFFFFFF,
+-    0x0000007FFFFFFFFF, 0x000000FFFFFFFFFF, 0x000001FFFFFFFFFF,
+-    0x000003FFFFFFFFFF, 0x000007FFFFFFFFFF, 0x00000FFFFFFFFFFF,
+-    0x00001FFFFFFFFFFF, 0x00003FFFFFFFFFFF, 0x00007FFFFFFFFFFF,
+-    0x0000FFFFFFFFFFFF, 0x0001FFFFFFFFFFFF, 0x0003FFFFFFFFFFFF,
+-    0x0007FFFFFFFFFFFF, 0x000FFFFFFFFFFFFF, 0x001FFFFFFFFFFFFF,
+-    0x003FFFFFFFFFFFFF, 0x007FFFFFFFFFFFFF, 0x00FFFFFFFFFFFFFF,
+-    0x01FFFFFFFFFFFFFF, 0x03FFFFFFFFFFFFFF, 0x07FFFFFFFFFFFFFF,
+-    0x0FFFFFFFFFFFFFFF, 0x1FFFFFFFFFFFFFFF, 0x3FFFFFFFFFFFFFFF,
+-    0x7FFFFFFFFFFFFFFF,
+-};
++static inline wuffs_base__io_transformer*
++wuffs_xz__decoder__upcast_as__wuffs_base__io_transformer(
++    wuffs_xz__decoder* p) {
++  return (wuffs_base__io_transformer*)p;
++}
+ 
+-const uint32_t wuffs_base__pixel_format__bits_per_channel[16] = {
+-    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+-    0x08, 0x0A, 0x0C, 0x10, 0x18, 0x20, 0x30, 0x40,
+-};
++// ---------------- Public Function Prototypes
+ 
+-const char wuffs_base__note__i_o_redirect[] = "@base: I/O redirect";
+-const char wuffs_base__note__end_of_data[] = "@base: end of data";
+-const char wuffs_base__note__metadata_reported[] = "@base: metadata reported";
+-const char wuffs_base__suspension__even_more_information[] = "$base: even more information";
+-const char wuffs_base__suspension__mispositioned_read[] = "$base: mispositioned read";
+-const char wuffs_base__suspension__mispositioned_write[] = "$base: mispositioned write";
+-const char wuffs_base__suspension__short_read[] = "$base: short read";
+-const char wuffs_base__suspension__short_write[] = "$base: short write";
+-const char wuffs_base__error__bad_i_o_position[] = "#base: bad I/O position";
+-const char wuffs_base__error__bad_argument_length_too_short[] = "#base: bad argument (length too short)";
+-const char wuffs_base__error__bad_argument[] = "#base: bad argument";
+-const char wuffs_base__error__bad_call_sequence[] = "#base: bad call sequence";
+-const char wuffs_base__error__bad_data[] = "#base: bad data";
+-const char wuffs_base__error__bad_receiver[] = "#base: bad receiver";
+-const char wuffs_base__error__bad_restart[] = "#base: bad restart";
+-const char wuffs_base__error__bad_sizeof_receiver[] = "#base: bad sizeof receiver";
+-const char wuffs_base__error__bad_vtable[] = "#base: bad vtable";
+-const char wuffs_base__error__bad_workbuf_length[] = "#base: bad workbuf length";
+-const char wuffs_base__error__bad_wuffs_version[] = "#base: bad wuffs version";
+-const char wuffs_base__error__cannot_return_a_suspension[] = "#base: cannot return a suspension";
+-const char wuffs_base__error__disabled_by_previous_error[] = "#base: disabled by previous error";
+-const char wuffs_base__error__initialize_falsely_claimed_already_zeroed[] = "#base: initialize falsely claimed already zeroed";
+-const char wuffs_base__error__initialize_not_called[] = "#base: initialize not called";
+-const char wuffs_base__error__interleaved_coroutine_calls[] = "#base: interleaved coroutine calls";
+-const char wuffs_base__error__no_more_information[] = "#base: no more information";
+-const char wuffs_base__error__not_enough_data[] = "#base: not enough data";
+-const char wuffs_base__error__out_of_bounds[] = "#base: out of bounds";
+-const char wuffs_base__error__unsupported_image_dimension[] = "#base: unsupported image dimension";
+-const char wuffs_base__error__unsupported_method[] = "#base: unsupported method";
+-const char wuffs_base__error__unsupported_option[] = "#base: unsupported option";
+-const char wuffs_base__error__unsupported_pixel_swizzler_option[] = "#base: unsupported pixel swizzler option";
+-const char wuffs_base__error__too_much_data[] = "#base: too much data";
+-
+-const char wuffs_base__hasher_u32__vtable_name[] = "{vtable}wuffs_base__hasher_u32";
+-const char wuffs_base__hasher_u64__vtable_name[] = "{vtable}wuffs_base__hasher_u64";
+-const char wuffs_base__image_decoder__vtable_name[] = "{vtable}wuffs_base__image_decoder";
+-const char wuffs_base__io_transformer__vtable_name[] = "{vtable}wuffs_base__io_transformer";
+-const char wuffs_base__token_decoder__vtable_name[] = "{vtable}wuffs_base__token_decoder";
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_xz__decoder__get_quirk(
++    const wuffs_xz__decoder* self,
++    uint32_t a_key);
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) ||
+-        // defined(WUFFS_CONFIG__MODULE__BASE)  ||
+-        // defined(WUFFS_CONFIG__MODULE__BASE__CORE)
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_xz__decoder__set_quirk(
++    wuffs_xz__decoder* self,
++    uint32_t a_key,
++    uint64_t a_value);
+ 
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
+-    defined(WUFFS_CONFIG__MODULE__BASE__INTERFACES)
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
++wuffs_xz__decoder__dst_history_retain_length(
++    const wuffs_xz__decoder* self);
+ 
+-// ---------------- Interface Definitions.
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_xz__decoder__workbuf_len(
++    const wuffs_xz__decoder* self);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_base__hasher_u32__checksum_u32(
+-    const wuffs_base__hasher_u32* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_xz__decoder__transform_io(
++    wuffs_xz__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf);
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) {
+-      const wuffs_base__hasher_u32__func_ptrs* func_ptrs =
+-          (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->checksum_u32)(self);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++#ifdef __cplusplus
++}  // extern "C"
++#endif
+ 
+-  return 0;
+-}
++// ---------------- Struct Definitions
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_base__hasher_u32__get_quirk(
+-    const wuffs_base__hasher_u32* self,
+-    uint32_t a_key) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
++// These structs' fields, and the sizeof them, are private implementation
++// details that aren't guaranteed to be stable across Wuffs versions.
++//
++// See https://en.wikipedia.org/wiki/Opaque_pointer#C
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) {
+-      const wuffs_base__hasher_u32__func_ptrs* func_ptrs =
+-          (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->get_quirk)(self, a_key);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
+ 
+-  return 0;
+-}
++struct wuffs_xz__decoder__struct {
++  // Do not access the private_impl's or private_data's fields directly. There
++  // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
++  // the wuffs_foo__bar__baz functions.
++  //
++  // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
++  // can be stack allocated when WUFFS_IMPLEMENTATION is defined.
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_base__hasher_u32__set_quirk(
+-    wuffs_base__hasher_u32* self,
+-    uint32_t a_key,
+-    uint64_t a_value) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-            ? wuffs_base__error__disabled_by_previous_error
+-            : wuffs_base__error__initialize_not_called);
+-  }
++  struct {
++    uint32_t magic;
++    uint32_t active_coroutine;
++    wuffs_base__vtable vtable_for__wuffs_base__io_transformer;
++    wuffs_base__vtable null_vtable;
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) {
+-      const wuffs_base__hasher_u32__func_ptrs* func_ptrs =
+-          (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->set_quirk)(self, a_key, a_value);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++    uint32_t f_filters[3];
++    uint32_t f_num_non_final_filters;
++    uint8_t f_checksummer;
++    bool f_ignore_checksum;
++    bool f_standalone_format;
++    bool f_lzma_needs_reset;
++    bool f_block_has_compressed_size;
++    bool f_block_has_uncompressed_size;
++    uint8_t f_bcj_undo_index;
++    uint32_t f_bcj_pos;
++    uint32_t f_bcj_x86_prev_mask;
++    uint64_t f_block_compressed_size;
++    uint64_t f_block_uncompressed_size;
++    uint64_t f_compressed_size_for_index;
++    uint32_t f_verification_have_hashed_sizes[2];
++    uint32_t f_verification_want_hashed_sizes[2];
++    uint64_t f_verification_have_total_sizes[2];
++    uint64_t f_verification_want_total_sizes[2];
++    uint64_t f_num_actual_blocks;
++    uint64_t f_num_index_blocks;
++    uint64_t f_index_block_compressed_size;
++    uint64_t f_index_block_uncompressed_size;
++    uint64_t f_backwards_size;
++    bool f_started_verify_index;
++    uint16_t f_flags;
++
++    uint8_t (*choosy_apply_non_final_filters)(
++        wuffs_xz__decoder* self,
++        wuffs_base__slice_u8 a_dst_slice);
++    uint32_t p_transform_io;
++    uint32_t p_do_transform_io;
++    uint32_t p_decode_block_header_with_padding;
++    uint32_t p_decode_block_header_sans_padding;
++    uint32_t p_verify_index;
++    uint32_t p_verify_footer;
++  } private_impl;
+ 
+-  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
+-}
++  struct {
++    uint8_t f_filter_data[3][256];
++    wuffs_crc32__ieee_hasher f_crc32;
++    wuffs_crc64__ecma_hasher f_crc64;
++    wuffs_sha256__hasher f_sha256;
++    wuffs_lzma__decoder f_lzma;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_base__hasher_u32__update(
+-    wuffs_base__hasher_u32* self,
+-    wuffs_base__slice_u8 a_x) {
+-  if (!self) {
+-    return wuffs_base__make_empty_struct();
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_empty_struct();
+-  }
++    struct {
++      uint32_t v_checksum32_have;
++      uint32_t v_checksum32_want;
++      wuffs_base__bitvec256 v_checksum256_have;
++      uint64_t v_compressed_size;
++      uint64_t v_uncompressed_size;
++      uint64_t scratch;
++    } s_do_transform_io;
++    struct {
++      uint64_t v_padded_size_have;
++      uint64_t v_padded_size_want;
++    } s_decode_block_header_with_padding;
++    struct {
++      uint8_t v_flags;
++      uint8_t v_filter_id;
++      uint32_t v_shift;
++      uint32_t v_f;
++      uint64_t scratch;
++    } s_decode_block_header_sans_padding;
++    struct {
++      uint32_t v_shift;
++    } s_verify_index;
++    struct {
++      uint64_t scratch;
++    } s_verify_footer;
++  } private_data;
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) {
+-      const wuffs_base__hasher_u32__func_ptrs* func_ptrs =
+-          (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->update)(self, a_x);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++#ifdef __cplusplus
++#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
++  using unique_ptr = std::unique_ptr<wuffs_xz__decoder, wuffs_unique_ptr_deleter>;
+ 
+-  return wuffs_base__make_empty_struct();
+-}
++  // On failure, the alloc_etc functions return nullptr. They don't throw.
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_base__hasher_u32__update_u32(
+-    wuffs_base__hasher_u32* self,
+-    wuffs_base__slice_u8 a_x) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return 0;
++  static inline unique_ptr
++  alloc() {
++    return unique_ptr(wuffs_xz__decoder__alloc());
+   }
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) {
+-      const wuffs_base__hasher_u32__func_ptrs* func_ptrs =
+-          (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->update_u32)(self, a_x);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
++  static inline wuffs_base__io_transformer::unique_ptr
++  alloc_as__wuffs_base__io_transformer() {
++    return wuffs_base__io_transformer::unique_ptr(
++        wuffs_xz__decoder__alloc_as__wuffs_base__io_transformer());
+   }
++#endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
+ 
+-  return 0;
+-}
++#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
++  // Disallow constructing or copying an object via standard C++ mechanisms,
++  // e.g. the "new" operator, as this struct is intentionally opaque. Its total
++  // size and field layout is not part of the public, stable, memory-safe API.
++  // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
++  // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
++  // their first argument) rather than tweaking bar.private_impl.qux fields.
++  //
++  // In C, we can just leave wuffs_foo__bar as an incomplete type (unless
++  // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
++  // order to provide convenience methods. These forward on "this", so that you
++  // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
++  wuffs_xz__decoder__struct() = delete;
++  wuffs_xz__decoder__struct(const wuffs_xz__decoder__struct&) = delete;
++  wuffs_xz__decoder__struct& operator=(
++      const wuffs_xz__decoder__struct&) = delete;
++#endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
+ 
+-// --------
++#if !defined(WUFFS_IMPLEMENTATION)
++  // As above, the size of the struct is not part of the public API, and unless
++  // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
++  // allocated, not stack allocated. Its size is not intended to be known at
++  // compile time, but it is unfortunately divulged as a side effect of
++  // defining C++ convenience methods. Use "sizeof__T()", calling the function,
++  // instead of "sizeof T", invoking the operator. To make the two values
++  // different, so that passing the latter will be rejected by the initialize
++  // function, we add an arbitrary amount of dead weight.
++  uint8_t dead_weight[123000000];  // 123 MB.
++#endif  // !defined(WUFFS_IMPLEMENTATION)
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_base__hasher_u64__checksum_u64(
+-    const wuffs_base__hasher_u64* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
++  inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++  initialize(
++      size_t sizeof_star_self,
++      uint64_t wuffs_version,
++      uint32_t options) {
++    return wuffs_xz__decoder__initialize(
++        this, sizeof_star_self, wuffs_version, options);
+   }
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) {
+-      const wuffs_base__hasher_u64__func_ptrs* func_ptrs =
+-          (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->checksum_u64)(self);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
++  inline wuffs_base__io_transformer*
++  upcast_as__wuffs_base__io_transformer() {
++    return (wuffs_base__io_transformer*)this;
+   }
+ 
+-  return 0;
+-}
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_base__hasher_u64__get_quirk(
+-    const wuffs_base__hasher_u64* self,
+-    uint32_t a_key) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
++  inline uint64_t
++  get_quirk(
++      uint32_t a_key) const {
++    return wuffs_xz__decoder__get_quirk(this, a_key);
+   }
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) {
+-      const wuffs_base__hasher_u64__func_ptrs* func_ptrs =
+-          (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->get_quirk)(self, a_key);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
++  inline wuffs_base__status
++  set_quirk(
++      uint32_t a_key,
++      uint64_t a_value) {
++    return wuffs_xz__decoder__set_quirk(this, a_key, a_value);
+   }
+ 
+-  return 0;
+-}
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_base__hasher_u64__set_quirk(
+-    wuffs_base__hasher_u64* self,
+-    uint32_t a_key,
+-    uint64_t a_value) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-            ? wuffs_base__error__disabled_by_previous_error
+-            : wuffs_base__error__initialize_not_called);
++  inline wuffs_base__optional_u63
++  dst_history_retain_length() const {
++    return wuffs_xz__decoder__dst_history_retain_length(this);
+   }
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) {
+-      const wuffs_base__hasher_u64__func_ptrs* func_ptrs =
+-          (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->set_quirk)(self, a_key, a_value);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
++  inline wuffs_base__range_ii_u64
++  workbuf_len() const {
++    return wuffs_xz__decoder__workbuf_len(this);
+   }
+ 
+-  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
+-}
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_base__hasher_u64__update(
+-    wuffs_base__hasher_u64* self,
+-    wuffs_base__slice_u8 a_x) {
+-  if (!self) {
+-    return wuffs_base__make_empty_struct();
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_empty_struct();
++  inline wuffs_base__status
++  transform_io(
++      wuffs_base__io_buffer* a_dst,
++      wuffs_base__io_buffer* a_src,
++      wuffs_base__slice_u8 a_workbuf) {
++    return wuffs_xz__decoder__transform_io(this, a_dst, a_src, a_workbuf);
+   }
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) {
+-      const wuffs_base__hasher_u64__func_ptrs* func_ptrs =
+-          (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->update)(self, a_x);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++#endif  // __cplusplus
++};  // struct wuffs_xz__decoder__struct
+ 
+-  return wuffs_base__make_empty_struct();
+-}
++#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_base__hasher_u64__update_u64(
+-    wuffs_base__hasher_u64* self,
+-    wuffs_base__slice_u8 a_x) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return 0;
+-  }
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XZ) || defined(WUFFS_NONMONOLITHIC)
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) {
+-      const wuffs_base__hasher_u64__func_ptrs* func_ptrs =
+-          (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->update_u64)(self, a_x);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++#if defined(__cplusplus) && defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
+ 
+-  return 0;
+-}
++// ---------------- Auxiliary - Base
+ 
+-// --------
++// Auxiliary code is discussed at
++// https://github.com/google/wuffs/blob/main/doc/note/auxiliary-code.md
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_base__image_decoder__decode_frame(
+-    wuffs_base__image_decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-            ? wuffs_base__error__disabled_by_previous_error
+-            : wuffs_base__error__initialize_not_called);
+-  }
++#include <stdio.h>
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
+-      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
+-          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->decode_frame)(self, a_dst, a_src, a_blend, a_workbuf, a_opts);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++#include <string>
++#include <utility>
+ 
+-  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
+-}
++namespace wuffs_aux {
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_base__image_decoder__decode_frame_config(
+-    wuffs_base__image_decoder* self,
+-    wuffs_base__frame_config* a_dst,
+-    wuffs_base__io_buffer* a_src) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-            ? wuffs_base__error__disabled_by_previous_error
+-            : wuffs_base__error__initialize_not_called);
+-  }
++using IOBuffer = wuffs_base__io_buffer;
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
+-      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
+-          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->decode_frame_config)(self, a_dst, a_src);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++// MemOwner represents ownership of some memory. Dynamically allocated memory
++// (e.g. from malloc or new) is typically paired with free or delete, invoked
++// when the std::unique_ptr is destroyed. Statically allocated memory might use
++// MemOwner(nullptr, &free), even if that statically allocated memory is not
++// nullptr, since calling free(nullptr) is a no-op.
++using MemOwner = std::unique_ptr<void, decltype(&free)>;
+ 
+-  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
+-}
++using QuirkKeyValuePair = std::pair<uint32_t, uint64_t>;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_base__image_decoder__decode_image_config(
+-    wuffs_base__image_decoder* self,
+-    wuffs_base__image_config* a_dst,
+-    wuffs_base__io_buffer* a_src) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-            ? wuffs_base__error__disabled_by_previous_error
+-            : wuffs_base__error__initialize_not_called);
+-  }
++namespace sync_io {
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
+-      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
+-          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->decode_image_config)(self, a_dst, a_src);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++// --------
+ 
+-  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
+-}
++// DynIOBuffer is an IOBuffer that is backed by a dynamically sized byte array.
++// It owns that backing array and will free it in its destructor.
++//
++// The array size can be explicitly extended (by calling the grow method) but,
++// unlike a C++ std::vector, there is no implicit extension (e.g. by calling
++// std::vector::insert) and its maximum size is capped by the max_incl
++// constructor argument.
++//
++// It contains an IOBuffer-typed field whose reader side provides access to
++// previously written bytes and whose writer side provides access to the
++// allocated but not-yet-written-to slack space. For Go programmers, this slack
++// space is roughly analogous to the s[len(s):cap(s)] space of a slice s.
++class DynIOBuffer {
++ public:
++  enum GrowResult {
++    OK = 0,
++    FailedMaxInclExceeded = 1,
++    FailedOutOfMemory = 2,
++  };
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
+-wuffs_base__image_decoder__frame_dirty_rect(
+-    const wuffs_base__image_decoder* self) {
+-  if (!self) {
+-    return wuffs_base__utility__empty_rect_ie_u32();
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_rect_ie_u32();
+-  }
++  // m_buf holds the dynamically sized byte array and its read/write indexes:
++  //  - m_buf.meta.wi  is roughly analogous to a Go slice's length.
++  //  - m_buf.data.len is roughly analogous to a Go slice's capacity. It is
++  //    also equal to the m_buf.data.ptr malloc/realloc size.
++  //
++  // Users should not modify the m_buf.data.ptr or m_buf.data.len fields (as
++  // they are conceptually private to this class), but they can modify the
++  // bytes referenced by that pointer-length pair (e.g. compactions).
++  IOBuffer m_buf;
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
+-      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
+-          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->frame_dirty_rect)(self);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++  // m_max_incl is an inclusive upper bound on the backing array size.
++  const uint64_t m_max_incl;
+ 
+-  return wuffs_base__utility__empty_rect_ie_u32();
+-}
++  // Constructor and destructor.
++  explicit DynIOBuffer(uint64_t max_incl);
++  ~DynIOBuffer();
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_base__image_decoder__get_quirk(
+-    const wuffs_base__image_decoder* self,
+-    uint32_t a_key) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
++  // Drop frees the byte array and resets m_buf. The DynIOBuffer can still be
++  // used after a drop call. It just restarts from zero.
++  void drop();
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
+-      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
+-          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->get_quirk)(self, a_key);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++  // grow ensures that the byte array size is at least min_incl and at most
++  // max_incl. It returns FailedMaxInclExceeded if that would require
++  // allocating more than max_incl bytes, including the case where (min_incl >
++  // max_incl). It returns FailedOutOfMemory if memory allocation failed.
++  GrowResult grow(uint64_t min_incl);
+ 
+-  return 0;
+-}
++ private:
++  // Delete the copy and assign constructors.
++  DynIOBuffer(const DynIOBuffer&) = delete;
++  DynIOBuffer& operator=(const DynIOBuffer&) = delete;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_base__image_decoder__history_retain_length(
+-    const wuffs_base__image_decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
++  static uint64_t round_up(uint64_t min_incl, uint64_t max_incl);
++};
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
+-      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
+-          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->history_retain_length)(self);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++// --------
+ 
+-  return 0;
+-}
++class Input {
++ public:
++  virtual ~Input();
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_base__image_decoder__num_animation_loops(
+-    const wuffs_base__image_decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
++  virtual IOBuffer* BringsItsOwnIOBuffer();
++  virtual std::string CopyIn(IOBuffer* dst) = 0;
++};
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
+-      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
+-          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->num_animation_loops)(self);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++// --------
+ 
+-  return 0;
+-}
++// FileInput is an Input that reads from a file source.
++//
++// It does not take responsibility for closing the file when done.
++class FileInput : public Input {
++ public:
++  FileInput(FILE* f);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_base__image_decoder__num_decoded_frame_configs(
+-    const wuffs_base__image_decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
++  virtual std::string CopyIn(IOBuffer* dst);
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
+-      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
+-          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->num_decoded_frame_configs)(self);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++ private:
++  FILE* m_f;
+ 
+-  return 0;
+-}
++  // Delete the copy and assign constructors.
++  FileInput(const FileInput&) = delete;
++  FileInput& operator=(const FileInput&) = delete;
++};
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_base__image_decoder__num_decoded_frames(
+-    const wuffs_base__image_decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
++// --------
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
+-      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
+-          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->num_decoded_frames)(self);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++// MemoryInput is an Input that reads from an in-memory source.
++//
++// It does not take responsibility for freeing the memory when done.
++class MemoryInput : public Input {
++ public:
++  MemoryInput(const char* ptr, size_t len);
++  MemoryInput(const uint8_t* ptr, size_t len);
+ 
+-  return 0;
+-}
++  virtual IOBuffer* BringsItsOwnIOBuffer();
++  virtual std::string CopyIn(IOBuffer* dst);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_base__image_decoder__restart_frame(
+-    wuffs_base__image_decoder* self,
+-    uint64_t a_index,
+-    uint64_t a_io_position) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-            ? wuffs_base__error__disabled_by_previous_error
+-            : wuffs_base__error__initialize_not_called);
+-  }
++ private:
++  IOBuffer m_io;
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
+-      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
+-          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->restart_frame)(self, a_index, a_io_position);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++  // Delete the copy and assign constructors.
++  MemoryInput(const MemoryInput&) = delete;
++  MemoryInput& operator=(const MemoryInput&) = delete;
++};
+ 
+-  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
+-}
++// --------
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_base__image_decoder__set_quirk(
+-    wuffs_base__image_decoder* self,
+-    uint32_t a_key,
+-    uint64_t a_value) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-            ? wuffs_base__error__disabled_by_previous_error
+-            : wuffs_base__error__initialize_not_called);
+-  }
++}  // namespace sync_io
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
+-      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
+-          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->set_quirk)(self, a_key, a_value);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++}  // namespace wuffs_aux
+ 
+-  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
+-}
++// ---------------- Auxiliary - CBOR
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_base__image_decoder__set_report_metadata(
+-    wuffs_base__image_decoder* self,
+-    uint32_t a_fourcc,
+-    bool a_report) {
+-  if (!self) {
+-    return wuffs_base__make_empty_struct();
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_empty_struct();
+-  }
++namespace wuffs_aux {
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
+-      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
+-          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->set_report_metadata)(self, a_fourcc, a_report);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++struct DecodeCborResult {
++  DecodeCborResult(std::string&& error_message0, uint64_t cursor_position0);
+ 
+-  return wuffs_base__make_empty_struct();
+-}
++  std::string error_message;
++  uint64_t cursor_position;
++};
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_base__image_decoder__tell_me_more(
+-    wuffs_base__image_decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__more_information* a_minfo,
+-    wuffs_base__io_buffer* a_src) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-            ? wuffs_base__error__disabled_by_previous_error
+-            : wuffs_base__error__initialize_not_called);
+-  }
++class DecodeCborCallbacks {
++ public:
++  virtual ~DecodeCborCallbacks();
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
+-      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
+-          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->tell_me_more)(self, a_dst, a_minfo, a_src);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++  // AppendXxx are called for leaf nodes: literals, numbers, strings, etc.
+ 
+-  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
+-}
++  virtual std::string AppendNull() = 0;
++  virtual std::string AppendUndefined() = 0;
++  virtual std::string AppendBool(bool val) = 0;
++  virtual std::string AppendF64(double val) = 0;
++  virtual std::string AppendI64(int64_t val) = 0;
++  virtual std::string AppendU64(uint64_t val) = 0;
++  virtual std::string AppendByteString(std::string&& val) = 0;
++  virtual std::string AppendTextString(std::string&& val) = 0;
++  virtual std::string AppendMinus1MinusX(uint64_t val) = 0;
++  virtual std::string AppendCborSimpleValue(uint8_t val) = 0;
++  virtual std::string AppendCborTag(uint64_t val) = 0;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_base__image_decoder__workbuf_len(
+-    const wuffs_base__image_decoder* self) {
+-  if (!self) {
+-    return wuffs_base__utility__empty_range_ii_u64();
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_range_ii_u64();
+-  }
++  // Push and Pop are called for container nodes: CBOR arrays (lists) and CBOR
++  // maps (dictionaries).
++  //
++  // The flags bits combine exactly one of:
++  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_NONE
++  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_LIST
++  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_DICT
++  // and exactly one of:
++  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE
++  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST
++  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
+-      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
+-          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->workbuf_len)(self);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++  virtual std::string Push(uint32_t flags) = 0;
++  virtual std::string Pop(uint32_t flags) = 0;
+ 
+-  return wuffs_base__utility__empty_range_ii_u64();
+-}
++  // Done is always the last Callback method called by DecodeCbor, whether or
++  // not parsing the input as CBOR encountered an error. Even when successful,
++  // trailing data may remain in input and buffer.
++  //
++  // Do not keep a reference to buffer or buffer.data.ptr after Done returns,
++  // as DecodeCbor may then de-allocate the backing array.
++  //
++  // The default Done implementation is a no-op.
++  virtual void  //
++  Done(DecodeCborResult& result, sync_io::Input& input, IOBuffer& buffer);
++};
+ 
+-// --------
++// The FooArgBar types add structure to Foo's optional arguments. They wrap
++// inner representations for several reasons:
++//  - It provides a home for the DefaultValue static method, for Foo callers
++//    that want to override some but not all optional arguments.
++//  - It provides the "Bar" name at Foo call sites, which can help self-
++//    document Foo calls with many arguemnts.
++//  - It provides some type safety against accidentally transposing or omitting
++//    adjacent fundamentally-numeric-typed optional arguments.
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_base__io_transformer__get_quirk(
+-    const wuffs_base__io_transformer* self,
+-    uint32_t a_key) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
++// DecodeCborArgQuirks wraps an optional argument to DecodeCbor.
++struct DecodeCborArgQuirks {
++  explicit DecodeCborArgQuirks(const QuirkKeyValuePair* ptr0,
++                               const size_t len0);
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
+-      const wuffs_base__io_transformer__func_ptrs* func_ptrs =
+-          (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->get_quirk)(self, a_key);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++  // DefaultValue returns an empty slice.
++  static DecodeCborArgQuirks DefaultValue();
+ 
+-  return 0;
+-}
++  const QuirkKeyValuePair* ptr;
++  const size_t len;
++};
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_base__io_transformer__history_retain_length(
+-    const wuffs_base__io_transformer* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
++// DecodeCbor calls callbacks based on the CBOR-formatted data in input.
++//
++// On success, the returned error_message is empty and cursor_position counts
++// the number of bytes consumed. On failure, error_message is non-empty and
++// cursor_position is the location of the error. That error may be a content
++// error (invalid CBOR) or an input error (e.g. network failure).
++DecodeCborResult  //
++DecodeCbor(DecodeCborCallbacks& callbacks,
++           sync_io::Input& input,
++           DecodeCborArgQuirks quirks = DecodeCborArgQuirks::DefaultValue());
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
+-      const wuffs_base__io_transformer__func_ptrs* func_ptrs =
+-          (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->history_retain_length)(self);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++}  // namespace wuffs_aux
+ 
+-  return 0;
+-}
++// ---------------- Auxiliary - Image
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_base__io_transformer__set_quirk(
+-    wuffs_base__io_transformer* self,
+-    uint32_t a_key,
+-    uint64_t a_value) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-            ? wuffs_base__error__disabled_by_previous_error
+-            : wuffs_base__error__initialize_not_called);
+-  }
++namespace wuffs_aux {
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
+-      const wuffs_base__io_transformer__func_ptrs* func_ptrs =
+-          (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->set_quirk)(self, a_key, a_value);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++struct DecodeImageResult {
++  DecodeImageResult(MemOwner&& pixbuf_mem_owner0,
++                    wuffs_base__pixel_buffer pixbuf0,
++                    std::string&& error_message0);
++  DecodeImageResult(std::string&& error_message0);
+ 
+-  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
+-}
++  MemOwner pixbuf_mem_owner;
++  wuffs_base__pixel_buffer pixbuf;
++  std::string error_message;
++};
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_base__io_transformer__transform_io(
+-    wuffs_base__io_transformer* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__slice_u8 a_workbuf) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-            ? wuffs_base__error__disabled_by_previous_error
+-            : wuffs_base__error__initialize_not_called);
+-  }
++// DecodeImageCallbacks are the callbacks given to DecodeImage. They are always
++// called in this order:
++//  1. SelectDecoder
++//  2. HandleMetadata
++//  3. SelectPixfmt
++//  4. AllocPixbuf
++//  5. AllocWorkbuf
++//  6. Done
++//
++// It may return early - the third callback might not be invoked if the second
++// one fails - but the final callback (Done) is always invoked.
++class DecodeImageCallbacks {
++ public:
++  // AllocPixbufResult holds a memory allocation (the result of malloc or new,
++  // a statically allocated pointer, etc), or an error message. The memory is
++  // de-allocated when mem_owner goes out of scope and is destroyed.
++  struct AllocPixbufResult {
++    AllocPixbufResult(MemOwner&& mem_owner0, wuffs_base__pixel_buffer pixbuf0);
++    AllocPixbufResult(std::string&& error_message0);
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
+-      const wuffs_base__io_transformer__func_ptrs* func_ptrs =
+-          (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->transform_io)(self, a_dst, a_src, a_workbuf);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++    MemOwner mem_owner;
++    wuffs_base__pixel_buffer pixbuf;
++    std::string error_message;
++  };
+ 
+-  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
+-}
++  // AllocWorkbufResult holds a memory allocation (the result of malloc or new,
++  // a statically allocated pointer, etc), or an error message. The memory is
++  // de-allocated when mem_owner goes out of scope and is destroyed.
++  struct AllocWorkbufResult {
++    AllocWorkbufResult(MemOwner&& mem_owner0, wuffs_base__slice_u8 workbuf0);
++    AllocWorkbufResult(std::string&& error_message0);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_base__io_transformer__workbuf_len(
+-    const wuffs_base__io_transformer* self) {
+-  if (!self) {
+-    return wuffs_base__utility__empty_range_ii_u64();
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_range_ii_u64();
+-  }
++    MemOwner mem_owner;
++    wuffs_base__slice_u8 workbuf;
++    std::string error_message;
++  };
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
+-      const wuffs_base__io_transformer__func_ptrs* func_ptrs =
+-          (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->workbuf_len)(self);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++  virtual ~DecodeImageCallbacks();
+ 
+-  return wuffs_base__utility__empty_range_ii_u64();
+-}
++  // SelectDecoder returns the image decoder for the input data's file format.
++  // Returning a nullptr means failure (DecodeImage_UnsupportedImageFormat).
++  //
++  // Common formats will have a FourCC value in the range [1 ..= 0x7FFF_FFFF],
++  // such as WUFFS_BASE__FOURCC__JPEG. A zero FourCC value means that Wuffs'
++  // standard library did not recognize the image format but if SelectDecoder
++  // was overridden, it may examine the input data's starting bytes and still
++  // provide its own image decoder, e.g. for an exotic image file format that's
++  // not in Wuffs' standard library. The prefix_etc fields have the same
++  // meaning as wuffs_base__magic_number_guess_fourcc arguments. SelectDecoder
++  // implementations should not modify prefix_data's contents.
++  //
++  // SelectDecoder might be called more than once, since some image file
++  // formats can wrap others. For example, a nominal BMP file can actually
++  // contain a JPEG or a PNG.
++  //
++  // The default SelectDecoder accepts the FOURCC codes listed below. For
++  // modular builds (i.e. when #define'ing WUFFS_CONFIG__MODULES), acceptance
++  // of the ETC file format is optional (for each value of ETC) and depends on
++  // the corresponding module to be enabled at compile time (i.e. #define'ing
++  // WUFFS_CONFIG__MODULE__ETC).
++  //  - WUFFS_BASE__FOURCC__BMP
++  //  - WUFFS_BASE__FOURCC__GIF
++  //  - WUFFS_BASE__FOURCC__JPEG
++  //  - WUFFS_BASE__FOURCC__NIE
++  //  - WUFFS_BASE__FOURCC__NPBM
++  //  - WUFFS_BASE__FOURCC__PNG
++  //  - WUFFS_BASE__FOURCC__QOI
++  //  - WUFFS_BASE__FOURCC__TGA
++  //  - WUFFS_BASE__FOURCC__WBMP
++  //  - WUFFS_BASE__FOURCC__WEBP
++  virtual wuffs_base__image_decoder::unique_ptr  //
++  SelectDecoder(uint32_t fourcc,
++                wuffs_base__slice_u8 prefix_data,
++                bool prefix_closed);
+ 
+-// --------
++  // HandleMetadata acknowledges image metadata. minfo.flavor will be one of:
++  //  - WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_PASSTHROUGH
++  //  - WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_PARSED
++  // If it is ETC__METADATA_RAW_ETC then raw contains the metadata bytes. Those
++  // bytes should not be retained beyond the the HandleMetadata call.
++  //
++  // minfo.metadata__fourcc() will typically match one of the
++  // DecodeImageArgFlags bits. For example, if (REPORT_METADATA_CHRM |
++  // REPORT_METADATA_GAMA) was passed to DecodeImage then the metadata FourCC
++  // will be either WUFFS_BASE__FOURCC__CHRM or WUFFS_BASE__FOURCC__GAMA.
++  //
++  // It returns an error message, or an empty string on success.
++  virtual std::string  //
++  HandleMetadata(const wuffs_base__more_information& minfo,
++                 wuffs_base__slice_u8 raw);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_base__token_decoder__decode_tokens(
+-    wuffs_base__token_decoder* self,
+-    wuffs_base__token_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__slice_u8 a_workbuf) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-            ? wuffs_base__error__disabled_by_previous_error
+-            : wuffs_base__error__initialize_not_called);
+-  }
++  // SelectPixfmt returns the destination pixel format for AllocPixbuf. It
++  // should return wuffs_base__make_pixel_format(etc) called with one of:
++  //  - WUFFS_BASE__PIXEL_FORMAT__BGR_565
++  //  - WUFFS_BASE__PIXEL_FORMAT__BGR
++  //  - WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL
++  //  - WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE
++  //  - WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL
++  //  - WUFFS_BASE__PIXEL_FORMAT__RGB
++  //  - WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL
++  //  - WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL
++  // or return image_config.pixcfg.pixel_format(). The latter means to use the
++  // image file's natural pixel format. For example, GIF images' natural pixel
++  // format is an indexed one.
++  //
++  // Returning otherwise means failure (DecodeImage_UnsupportedPixelFormat).
++  //
++  // The default SelectPixfmt implementation returns
++  // wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL) which
++  // is 4 bytes per pixel (8 bits per channel × 4 channels).
++  virtual wuffs_base__pixel_format  //
++  SelectPixfmt(const wuffs_base__image_config& image_config);
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__token_decoder__vtable_name) {
+-      const wuffs_base__token_decoder__func_ptrs* func_ptrs =
+-          (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->decode_tokens)(self, a_dst, a_src, a_workbuf);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++  // AllocPixbuf allocates the pixel buffer.
++  //
++  // allow_uninitialized_memory will be true if a valid background_color was
++  // passed to DecodeImage, since the pixel buffer's contents will be
++  // overwritten with that color after AllocPixbuf returns.
++  //
++  // The default AllocPixbuf implementation allocates either uninitialized or
++  // zeroed memory. Zeroed memory typically corresponds to filling with opaque
++  // black or transparent black, depending on the pixel format.
++  virtual AllocPixbufResult  //
++  AllocPixbuf(const wuffs_base__image_config& image_config,
++              bool allow_uninitialized_memory);
+ 
+-  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
+-}
++  // AllocWorkbuf allocates the work buffer. The allocated buffer's length
++  // should be at least len_range.min_incl, but larger allocations (up to
++  // len_range.max_incl) may have better performance (by using more memory).
++  //
++  // The default AllocWorkbuf implementation allocates len_range.max_incl bytes
++  // of either uninitialized or zeroed memory.
++  virtual AllocWorkbufResult  //
++  AllocWorkbuf(wuffs_base__range_ii_u64 len_range,
++               bool allow_uninitialized_memory);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_base__token_decoder__get_quirk(
+-    const wuffs_base__token_decoder* self,
+-    uint32_t a_key) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
++  // Done is always the last Callback method called by DecodeImage, whether or
++  // not parsing the input encountered an error. Even when successful, trailing
++  // data may remain in input and buffer.
++  //
++  // The image_decoder is the one returned by SelectDecoder (if SelectDecoder
++  // was successful), or a no-op unique_ptr otherwise. Like any unique_ptr,
++  // ownership moves to the Done implementation.
++  //
++  // Do not keep a reference to buffer or buffer.data.ptr after Done returns,
++  // as DecodeImage may then de-allocate the backing array.
++  //
++  // The default Done implementation is a no-op, other than running the
++  // image_decoder unique_ptr destructor.
++  virtual void  //
++  Done(DecodeImageResult& result,
++       sync_io::Input& input,
++       IOBuffer& buffer,
++       wuffs_base__image_decoder::unique_ptr image_decoder);
++};
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__token_decoder__vtable_name) {
+-      const wuffs_base__token_decoder__func_ptrs* func_ptrs =
+-          (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->get_quirk)(self, a_key);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++extern const char DecodeImage_BufferIsTooShort[];
++extern const char DecodeImage_MaxInclDimensionExceeded[];
++extern const char DecodeImage_MaxInclMetadataLengthExceeded[];
++extern const char DecodeImage_OutOfMemory[];
++extern const char DecodeImage_UnexpectedEndOfFile[];
++extern const char DecodeImage_UnsupportedImageFormat[];
++extern const char DecodeImage_UnsupportedMetadata[];
++extern const char DecodeImage_UnsupportedPixelBlend[];
++extern const char DecodeImage_UnsupportedPixelConfiguration[];
++extern const char DecodeImage_UnsupportedPixelFormat[];
+ 
+-  return 0;
+-}
++// The FooArgBar types add structure to Foo's optional arguments. They wrap
++// inner representations for several reasons:
++//  - It provides a home for the DefaultValue static method, for Foo callers
++//    that want to override some but not all optional arguments.
++//  - It provides the "Bar" name at Foo call sites, which can help self-
++//    document Foo calls with many arguemnts.
++//  - It provides some type safety against accidentally transposing or omitting
++//    adjacent fundamentally-numeric-typed optional arguments.
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_base__token_decoder__history_retain_length(
+-    const wuffs_base__token_decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
++// DecodeImageArgQuirks wraps an optional argument to DecodeImage.
++struct DecodeImageArgQuirks {
++  explicit DecodeImageArgQuirks(const QuirkKeyValuePair* ptr0,
++                                const size_t len0);
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__token_decoder__vtable_name) {
+-      const wuffs_base__token_decoder__func_ptrs* func_ptrs =
+-          (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->history_retain_length)(self);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++  // DefaultValue returns an empty slice.
++  static DecodeImageArgQuirks DefaultValue();
+ 
+-  return 0;
+-}
++  const QuirkKeyValuePair* ptr;
++  const size_t len;
++};
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_base__token_decoder__set_quirk(
+-    wuffs_base__token_decoder* self,
+-    uint32_t a_key,
+-    uint64_t a_value) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-            ? wuffs_base__error__disabled_by_previous_error
+-            : wuffs_base__error__initialize_not_called);
+-  }
++// DecodeImageArgFlags wraps an optional argument to DecodeImage.
++struct DecodeImageArgFlags {
++  explicit DecodeImageArgFlags(uint64_t repr0);
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__token_decoder__vtable_name) {
+-      const wuffs_base__token_decoder__func_ptrs* func_ptrs =
+-          (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->set_quirk)(self, a_key, a_value);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++  // DefaultValue returns 0.
++  static DecodeImageArgFlags DefaultValue();
+ 
+-  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
+-}
++  // TODO: support all of the REPORT_METADATA_ETC flags, not just CHRM, EXIF,
++  // GAMA, ICCP, KVP, SRGB and XMP.
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_base__token_decoder__workbuf_len(
+-    const wuffs_base__token_decoder* self) {
+-  if (!self) {
+-    return wuffs_base__utility__empty_range_ii_u64();
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_range_ii_u64();
+-  }
++  // Background Color.
++  static constexpr uint64_t REPORT_METADATA_BGCL = 0x0001;
++  // Primary Chromaticities and White Point.
++  static constexpr uint64_t REPORT_METADATA_CHRM = 0x0002;
++  // Exchangeable Image File Format.
++  static constexpr uint64_t REPORT_METADATA_EXIF = 0x0004;
++  // Gamma Correction.
++  static constexpr uint64_t REPORT_METADATA_GAMA = 0x0008;
++  // International Color Consortium Profile.
++  static constexpr uint64_t REPORT_METADATA_ICCP = 0x0010;
++  // Key-Value Pair.
++  //
++  // For PNG files, this includes iTXt, tEXt and zTXt chunks. In the
++  // HandleMetadata callback, the raw argument contains UTF-8 strings.
++  static constexpr uint64_t REPORT_METADATA_KVP = 0x0020;
++  // Modification Time.
++  static constexpr uint64_t REPORT_METADATA_MTIM = 0x0040;
++  // Offset (2-Dimensional).
++  static constexpr uint64_t REPORT_METADATA_OFS2 = 0x0080;
++  // Physical Dimensions.
++  static constexpr uint64_t REPORT_METADATA_PHYD = 0x0100;
++  // Standard Red Green Blue (Rendering Intent).
++  static constexpr uint64_t REPORT_METADATA_SRGB = 0x0200;
++  // Extensible Metadata Platform.
++  static constexpr uint64_t REPORT_METADATA_XMP = 0x0400;
+ 
+-  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
+-  int i;
+-  for (i = 0; i < 63; i++) {
+-    if (v->vtable_name == wuffs_base__token_decoder__vtable_name) {
+-      const wuffs_base__token_decoder__func_ptrs* func_ptrs =
+-          (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers);
+-      return (*func_ptrs->workbuf_len)(self);
+-    } else if (v->vtable_name == NULL) {
+-      break;
+-    }
+-    v++;
+-  }
++  uint64_t repr;
++};
+ 
+-  return wuffs_base__utility__empty_range_ii_u64();
+-}
++// DecodeImageArgPixelBlend wraps an optional argument to DecodeImage.
++struct DecodeImageArgPixelBlend {
++  explicit DecodeImageArgPixelBlend(wuffs_base__pixel_blend repr0);
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) ||
+-        // defined(WUFFS_CONFIG__MODULE__BASE) ||
+-        // defined(WUFFS_CONFIG__MODULE__BASE__INTERFACES)
++  // DefaultValue returns WUFFS_BASE__PIXEL_BLEND__SRC.
++  static DecodeImageArgPixelBlend DefaultValue();
+ 
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
+-    defined(WUFFS_CONFIG__MODULE__BASE__FLOATCONV)
++  wuffs_base__pixel_blend repr;
++};
+ 
+-// ---------------- IEEE 754 Floating Point
++// DecodeImageArgBackgroundColor wraps an optional argument to DecodeImage.
++struct DecodeImageArgBackgroundColor {
++  explicit DecodeImageArgBackgroundColor(
++      wuffs_base__color_u32_argb_premul repr0);
+ 
+-// The etc__hpd_left_shift and etc__powers_of_5 tables were printed by
+-// script/print-hpd-left-shift.go. That script has an optional -comments flag,
+-// whose output is not copied here, which prints further detail.
+-//
+-// These tables are used in
+-// wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits.
++  // DefaultValue returns 1, an invalid wuffs_base__color_u32_argb_premul.
++  static DecodeImageArgBackgroundColor DefaultValue();
++
++  wuffs_base__color_u32_argb_premul repr;
++};
++
++// DecodeImageArgMaxInclDimension wraps an optional argument to DecodeImage.
++struct DecodeImageArgMaxInclDimension {
++  explicit DecodeImageArgMaxInclDimension(uint32_t repr0);
++
++  // DefaultValue returns 1048575 = 0x000F_FFFF, more than 1 million pixels.
++  static DecodeImageArgMaxInclDimension DefaultValue();
++
++  uint32_t repr;
++};
++
++// DecodeImageArgMaxInclMetadataLength wraps an optional argument to
++// DecodeImage.
++struct DecodeImageArgMaxInclMetadataLength {
++  explicit DecodeImageArgMaxInclMetadataLength(uint64_t repr0);
++
++  // DefaultValue returns 16777215 = 0x00FF_FFFF, one less than 16 MiB.
++  static DecodeImageArgMaxInclMetadataLength DefaultValue();
++
++  uint64_t repr;
++};
+ 
+-// wuffs_base__private_implementation__hpd_left_shift[i] encodes the number of
+-// new digits created after multiplying a positive integer by (1 << i): the
+-// additional length in the decimal representation. For example, shifting "234"
+-// by 3 (equivalent to multiplying by 8) will produce "1872". Going from a
+-// 3-length string to a 4-length string means that 1 new digit was added (and
+-// existing digits may have changed).
++// DecodeImage decodes the image data in input. A variety of image file formats
++// can be decoded, depending on what callbacks.SelectDecoder returns.
+ //
+-// Shifting by i can add either N or N-1 new digits, depending on whether the
+-// original positive integer compares >= or < to the i'th power of 5 (as 10
+-// equals 2 * 5). Comparison is lexicographic, not numerical.
++// For animated formats, only the first frame is returned, since the API is
++// simpler for synchronous I/O and having DecodeImage only return when
++// completely done, but rendering animation often involves handling other
++// events in between animation frames. To decode multiple frames of animated
++// images, or for asynchronous I/O (e.g. when decoding an image streamed over
++// the network), use Wuffs' lower level C API instead of its higher level,
++// simplified C++ API (the wuffs_aux API).
+ //
+-// For example, shifting by 4 (i.e. multiplying by 16) can add 1 or 2 new
+-// digits, depending on a lexicographic comparison to (5 ** 4), i.e. "625":
+-//  - ("1"      << 4) is "16",       which adds 1 new digit.
+-//  - ("5678"   << 4) is "90848",    which adds 1 new digit.
+-//  - ("624"    << 4) is "9984",     which adds 1 new digit.
+-//  - ("62498"  << 4) is "999968",   which adds 1 new digit.
+-//  - ("625"    << 4) is "10000",    which adds 2 new digits.
+-//  - ("625001" << 4) is "10000016", which adds 2 new digits.
+-//  - ("7008"   << 4) is "112128",   which adds 2 new digits.
+-//  - ("99"     << 4) is "1584",     which adds 2 new digits.
++// The DecodeImageResult's fields depend on whether decoding succeeded:
++//  - On total success, the error_message is empty and pixbuf.pixcfg.is_valid()
++//    is true.
++//  - On partial success (e.g. the input file was truncated but we are still
++//    able to decode some of the pixels), error_message is non-empty but
++//    pixbuf.pixcfg.is_valid() is still true. It is up to the caller whether to
++//    accept or reject partial success.
++//  - On failure, the error_message is non_empty and pixbuf.pixcfg.is_valid()
++//    is false.
+ //
+-// Thus, when i is 4, N is 2 and (5 ** i) is "625". This etc__hpd_left_shift
+-// array encodes this as:
+-//  - etc__hpd_left_shift[4] is 0x1006 = (2 << 11) | 0x0006.
+-//  - etc__hpd_left_shift[5] is 0x1009 = (? << 11) | 0x0009.
+-// where the ? isn't relevant for i == 4.
++// The callbacks allocate the pixel buffer memory and work buffer memory. On
++// success, pixel buffer memory ownership is passed to the DecodeImage caller
++// as the returned pixbuf_mem_owner. Regardless of success or failure, the work
++// buffer memory is deleted.
+ //
+-// The high 5 bits of etc__hpd_left_shift[i] is N, the higher of the two
+-// possible number of new digits. The low 11 bits are an offset into the
+-// etc__powers_of_5 array (of length 0x051C, so offsets fit in 11 bits). When i
+-// is 4, its offset and the next one is 6 and 9, and etc__powers_of_5[6 .. 9]
+-// is the string "\x06\x02\x05", so the relevant power of 5 is "625".
++// The pixel_blend (one of the constants listed below) determines how to
++// composite the decoded image over the pixel buffer's original pixels (as
++// returned by callbacks.AllocPixbuf):
++//  - WUFFS_BASE__PIXEL_BLEND__SRC
++//  - WUFFS_BASE__PIXEL_BLEND__SRC_OVER
+ //
+-// Thanks to Ken Thompson for the original idea.
+-static const uint16_t wuffs_base__private_implementation__hpd_left_shift[65] = {
+-    0x0000, 0x0800, 0x0801, 0x0803, 0x1006, 0x1009, 0x100D, 0x1812, 0x1817,
+-    0x181D, 0x2024, 0x202B, 0x2033, 0x203C, 0x2846, 0x2850, 0x285B, 0x3067,
+-    0x3073, 0x3080, 0x388E, 0x389C, 0x38AB, 0x38BB, 0x40CC, 0x40DD, 0x40EF,
+-    0x4902, 0x4915, 0x4929, 0x513E, 0x5153, 0x5169, 0x5180, 0x5998, 0x59B0,
+-    0x59C9, 0x61E3, 0x61FD, 0x6218, 0x6A34, 0x6A50, 0x6A6D, 0x6A8B, 0x72AA,
+-    0x72C9, 0x72E9, 0x7B0A, 0x7B2B, 0x7B4D, 0x8370, 0x8393, 0x83B7, 0x83DC,
+-    0x8C02, 0x8C28, 0x8C4F, 0x9477, 0x949F, 0x94C8, 0x9CF2, 0x051C, 0x051C,
+-    0x051C, 0x051C,
+-};
+-
+-// wuffs_base__private_implementation__powers_of_5 contains the powers of 5,
+-// concatenated together: "5", "25", "125", "625", "3125", etc.
+-static const uint8_t wuffs_base__private_implementation__powers_of_5[0x051C] = {
+-    5, 2, 5, 1, 2, 5, 6, 2, 5, 3, 1, 2, 5, 1, 5, 6, 2, 5, 7, 8, 1, 2, 5, 3, 9,
+-    0, 6, 2, 5, 1, 9, 5, 3, 1, 2, 5, 9, 7, 6, 5, 6, 2, 5, 4, 8, 8, 2, 8, 1, 2,
+-    5, 2, 4, 4, 1, 4, 0, 6, 2, 5, 1, 2, 2, 0, 7, 0, 3, 1, 2, 5, 6, 1, 0, 3, 5,
+-    1, 5, 6, 2, 5, 3, 0, 5, 1, 7, 5, 7, 8, 1, 2, 5, 1, 5, 2, 5, 8, 7, 8, 9, 0,
+-    6, 2, 5, 7, 6, 2, 9, 3, 9, 4, 5, 3, 1, 2, 5, 3, 8, 1, 4, 6, 9, 7, 2, 6, 5,
+-    6, 2, 5, 1, 9, 0, 7, 3, 4, 8, 6, 3, 2, 8, 1, 2, 5, 9, 5, 3, 6, 7, 4, 3, 1,
+-    6, 4, 0, 6, 2, 5, 4, 7, 6, 8, 3, 7, 1, 5, 8, 2, 0, 3, 1, 2, 5, 2, 3, 8, 4,
+-    1, 8, 5, 7, 9, 1, 0, 1, 5, 6, 2, 5, 1, 1, 9, 2, 0, 9, 2, 8, 9, 5, 5, 0, 7,
+-    8, 1, 2, 5, 5, 9, 6, 0, 4, 6, 4, 4, 7, 7, 5, 3, 9, 0, 6, 2, 5, 2, 9, 8, 0,
+-    2, 3, 2, 2, 3, 8, 7, 6, 9, 5, 3, 1, 2, 5, 1, 4, 9, 0, 1, 1, 6, 1, 1, 9, 3,
+-    8, 4, 7, 6, 5, 6, 2, 5, 7, 4, 5, 0, 5, 8, 0, 5, 9, 6, 9, 2, 3, 8, 2, 8, 1,
+-    2, 5, 3, 7, 2, 5, 2, 9, 0, 2, 9, 8, 4, 6, 1, 9, 1, 4, 0, 6, 2, 5, 1, 8, 6,
+-    2, 6, 4, 5, 1, 4, 9, 2, 3, 0, 9, 5, 7, 0, 3, 1, 2, 5, 9, 3, 1, 3, 2, 2, 5,
+-    7, 4, 6, 1, 5, 4, 7, 8, 5, 1, 5, 6, 2, 5, 4, 6, 5, 6, 6, 1, 2, 8, 7, 3, 0,
+-    7, 7, 3, 9, 2, 5, 7, 8, 1, 2, 5, 2, 3, 2, 8, 3, 0, 6, 4, 3, 6, 5, 3, 8, 6,
+-    9, 6, 2, 8, 9, 0, 6, 2, 5, 1, 1, 6, 4, 1, 5, 3, 2, 1, 8, 2, 6, 9, 3, 4, 8,
+-    1, 4, 4, 5, 3, 1, 2, 5, 5, 8, 2, 0, 7, 6, 6, 0, 9, 1, 3, 4, 6, 7, 4, 0, 7,
+-    2, 2, 6, 5, 6, 2, 5, 2, 9, 1, 0, 3, 8, 3, 0, 4, 5, 6, 7, 3, 3, 7, 0, 3, 6,
+-    1, 3, 2, 8, 1, 2, 5, 1, 4, 5, 5, 1, 9, 1, 5, 2, 2, 8, 3, 6, 6, 8, 5, 1, 8,
+-    0, 6, 6, 4, 0, 6, 2, 5, 7, 2, 7, 5, 9, 5, 7, 6, 1, 4, 1, 8, 3, 4, 2, 5, 9,
+-    0, 3, 3, 2, 0, 3, 1, 2, 5, 3, 6, 3, 7, 9, 7, 8, 8, 0, 7, 0, 9, 1, 7, 1, 2,
+-    9, 5, 1, 6, 6, 0, 1, 5, 6, 2, 5, 1, 8, 1, 8, 9, 8, 9, 4, 0, 3, 5, 4, 5, 8,
+-    5, 6, 4, 7, 5, 8, 3, 0, 0, 7, 8, 1, 2, 5, 9, 0, 9, 4, 9, 4, 7, 0, 1, 7, 7,
+-    2, 9, 2, 8, 2, 3, 7, 9, 1, 5, 0, 3, 9, 0, 6, 2, 5, 4, 5, 4, 7, 4, 7, 3, 5,
+-    0, 8, 8, 6, 4, 6, 4, 1, 1, 8, 9, 5, 7, 5, 1, 9, 5, 3, 1, 2, 5, 2, 2, 7, 3,
+-    7, 3, 6, 7, 5, 4, 4, 3, 2, 3, 2, 0, 5, 9, 4, 7, 8, 7, 5, 9, 7, 6, 5, 6, 2,
+-    5, 1, 1, 3, 6, 8, 6, 8, 3, 7, 7, 2, 1, 6, 1, 6, 0, 2, 9, 7, 3, 9, 3, 7, 9,
+-    8, 8, 2, 8, 1, 2, 5, 5, 6, 8, 4, 3, 4, 1, 8, 8, 6, 0, 8, 0, 8, 0, 1, 4, 8,
+-    6, 9, 6, 8, 9, 9, 4, 1, 4, 0, 6, 2, 5, 2, 8, 4, 2, 1, 7, 0, 9, 4, 3, 0, 4,
+-    0, 4, 0, 0, 7, 4, 3, 4, 8, 4, 4, 9, 7, 0, 7, 0, 3, 1, 2, 5, 1, 4, 2, 1, 0,
+-    8, 5, 4, 7, 1, 5, 2, 0, 2, 0, 0, 3, 7, 1, 7, 4, 2, 2, 4, 8, 5, 3, 5, 1, 5,
+-    6, 2, 5, 7, 1, 0, 5, 4, 2, 7, 3, 5, 7, 6, 0, 1, 0, 0, 1, 8, 5, 8, 7, 1, 1,
+-    2, 4, 2, 6, 7, 5, 7, 8, 1, 2, 5, 3, 5, 5, 2, 7, 1, 3, 6, 7, 8, 8, 0, 0, 5,
+-    0, 0, 9, 2, 9, 3, 5, 5, 6, 2, 1, 3, 3, 7, 8, 9, 0, 6, 2, 5, 1, 7, 7, 6, 3,
+-    5, 6, 8, 3, 9, 4, 0, 0, 2, 5, 0, 4, 6, 4, 6, 7, 7, 8, 1, 0, 6, 6, 8, 9, 4,
+-    5, 3, 1, 2, 5, 8, 8, 8, 1, 7, 8, 4, 1, 9, 7, 0, 0, 1, 2, 5, 2, 3, 2, 3, 3,
+-    8, 9, 0, 5, 3, 3, 4, 4, 7, 2, 6, 5, 6, 2, 5, 4, 4, 4, 0, 8, 9, 2, 0, 9, 8,
+-    5, 0, 0, 6, 2, 6, 1, 6, 1, 6, 9, 4, 5, 2, 6, 6, 7, 2, 3, 6, 3, 2, 8, 1, 2,
+-    5, 2, 2, 2, 0, 4, 4, 6, 0, 4, 9, 2, 5, 0, 3, 1, 3, 0, 8, 0, 8, 4, 7, 2, 6,
+-    3, 3, 3, 6, 1, 8, 1, 6, 4, 0, 6, 2, 5, 1, 1, 1, 0, 2, 2, 3, 0, 2, 4, 6, 2,
+-    5, 1, 5, 6, 5, 4, 0, 4, 2, 3, 6, 3, 1, 6, 6, 8, 0, 9, 0, 8, 2, 0, 3, 1, 2,
+-    5, 5, 5, 5, 1, 1, 1, 5, 1, 2, 3, 1, 2, 5, 7, 8, 2, 7, 0, 2, 1, 1, 8, 1, 5,
+-    8, 3, 4, 0, 4, 5, 4, 1, 0, 1, 5, 6, 2, 5, 2, 7, 7, 5, 5, 5, 7, 5, 6, 1, 5,
+-    6, 2, 8, 9, 1, 3, 5, 1, 0, 5, 9, 0, 7, 9, 1, 7, 0, 2, 2, 7, 0, 5, 0, 7, 8,
+-    1, 2, 5, 1, 3, 8, 7, 7, 7, 8, 7, 8, 0, 7, 8, 1, 4, 4, 5, 6, 7, 5, 5, 2, 9,
+-    5, 3, 9, 5, 8, 5, 1, 1, 3, 5, 2, 5, 3, 9, 0, 6, 2, 5, 6, 9, 3, 8, 8, 9, 3,
+-    9, 0, 3, 9, 0, 7, 2, 2, 8, 3, 7, 7, 6, 4, 7, 6, 9, 7, 9, 2, 5, 5, 6, 7, 6,
+-    2, 6, 9, 5, 3, 1, 2, 5, 3, 4, 6, 9, 4, 4, 6, 9, 5, 1, 9, 5, 3, 6, 1, 4, 1,
+-    8, 8, 8, 2, 3, 8, 4, 8, 9, 6, 2, 7, 8, 3, 8, 1, 3, 4, 7, 6, 5, 6, 2, 5, 1,
+-    7, 3, 4, 7, 2, 3, 4, 7, 5, 9, 7, 6, 8, 0, 7, 0, 9, 4, 4, 1, 1, 9, 2, 4, 4,
+-    8, 1, 3, 9, 1, 9, 0, 6, 7, 3, 8, 2, 8, 1, 2, 5, 8, 6, 7, 3, 6, 1, 7, 3, 7,
+-    9, 8, 8, 4, 0, 3, 5, 4, 7, 2, 0, 5, 9, 6, 2, 2, 4, 0, 6, 9, 5, 9, 5, 3, 3,
+-    6, 9, 1, 4, 0, 6, 2, 5,
+-};
++// The background_color is used to fill the pixel buffer after
++// callbacks.AllocPixbuf returns, if it is valid in the
++// wuffs_base__color_u32_argb_premul__is_valid sense. The default value,
++// 0x0000_0001, is not valid since its Blue channel value (0x01) is greater
++// than its Alpha channel value (0x00). A valid background_color will typically
++// be overwritten when pixel_blend is WUFFS_BASE__PIXEL_BLEND__SRC, but might
++// still be visible on partial (not total) success or when pixel_blend is
++// WUFFS_BASE__PIXEL_BLEND__SRC_OVER and the decoded image is not fully opaque.
++//
++// Decoding fails (with DecodeImage_MaxInclDimensionExceeded) if the image's
++// width or height is greater than max_incl_dimension or if any opted-in (via
++// flags bits) metadata is longer than max_incl_metadata_length.
++DecodeImageResult  //
++DecodeImage(DecodeImageCallbacks& callbacks,
++            sync_io::Input& input,
++            DecodeImageArgQuirks quirks = DecodeImageArgQuirks::DefaultValue(),
++            DecodeImageArgFlags flags = DecodeImageArgFlags::DefaultValue(),
++            DecodeImageArgPixelBlend pixel_blend =
++                DecodeImageArgPixelBlend::DefaultValue(),
++            DecodeImageArgBackgroundColor background_color =
++                DecodeImageArgBackgroundColor::DefaultValue(),
++            DecodeImageArgMaxInclDimension max_incl_dimension =
++                DecodeImageArgMaxInclDimension::DefaultValue(),
++            DecodeImageArgMaxInclMetadataLength max_incl_metadata_length =
++                DecodeImageArgMaxInclMetadataLength::DefaultValue());
+ 
+-// --------
++}  // namespace wuffs_aux
+ 
+-// wuffs_base__private_implementation__powers_of_10 contains truncated
+-// approximations to the powers of 10, ranging from 1e-307 to 1e+288 inclusive,
+-// as 596 pairs of uint64_t values (a 128-bit mantissa).
+-//
+-// There's also an implicit third column (implied by a linear formula involving
+-// the base-10 exponent) that is the base-2 exponent, biased by a magic
+-// constant. That constant (1214 or 0x04BE) equals 1023 + 191. 1023 is the bias
+-// for IEEE 754 double-precision floating point. 191 is ((3 * 64) - 1) and
+-// wuffs_base__private_implementation__parse_number_f64_eisel_lemire works with
+-// multiples-of-64-bit mantissas.
+-//
+-// For example, the third row holds the approximation to 1e-305:
+-//   0xE0B62E29_29ABA83C_331ACDAB_FE94DE87 * (2 ** (0x0049 - 0x04BE))
+-//
+-// Similarly, 1e+4 is approximated by:
+-//   0x9C400000_00000000_00000000_00000000 * (2 ** (0x044C - 0x04BE))
+-//
+-// Similarly, 1e+68 is approximated by:
+-//   0xED63A231_D4C4FB27_4CA7AAA8_63EE4BDD * (2 ** (0x0520 - 0x04BE))
+-//
+-// This table was generated by by script/print-mpb-powers-of-10.go
+-static const uint64_t wuffs_base__private_implementation__powers_of_10[596][2] =
+-    {
+-        {0xA5D3B6D479F8E056, 0x8FD0C16206306BAB},  // 1e-307
+-        {0x8F48A4899877186C, 0xB3C4F1BA87BC8696},  // 1e-306
+-        {0x331ACDABFE94DE87, 0xE0B62E2929ABA83C},  // 1e-305
+-        {0x9FF0C08B7F1D0B14, 0x8C71DCD9BA0B4925},  // 1e-304
+-        {0x07ECF0AE5EE44DD9, 0xAF8E5410288E1B6F},  // 1e-303
+-        {0xC9E82CD9F69D6150, 0xDB71E91432B1A24A},  // 1e-302
+-        {0xBE311C083A225CD2, 0x892731AC9FAF056E},  // 1e-301
+-        {0x6DBD630A48AAF406, 0xAB70FE17C79AC6CA},  // 1e-300
+-        {0x092CBBCCDAD5B108, 0xD64D3D9DB981787D},  // 1e-299
+-        {0x25BBF56008C58EA5, 0x85F0468293F0EB4E},  // 1e-298
+-        {0xAF2AF2B80AF6F24E, 0xA76C582338ED2621},  // 1e-297
+-        {0x1AF5AF660DB4AEE1, 0xD1476E2C07286FAA},  // 1e-296
+-        {0x50D98D9FC890ED4D, 0x82CCA4DB847945CA},  // 1e-295
+-        {0xE50FF107BAB528A0, 0xA37FCE126597973C},  // 1e-294
+-        {0x1E53ED49A96272C8, 0xCC5FC196FEFD7D0C},  // 1e-293
+-        {0x25E8E89C13BB0F7A, 0xFF77B1FCBEBCDC4F},  // 1e-292
+-        {0x77B191618C54E9AC, 0x9FAACF3DF73609B1},  // 1e-291
+-        {0xD59DF5B9EF6A2417, 0xC795830D75038C1D},  // 1e-290
+-        {0x4B0573286B44AD1D, 0xF97AE3D0D2446F25},  // 1e-289
+-        {0x4EE367F9430AEC32, 0x9BECCE62836AC577},  // 1e-288
+-        {0x229C41F793CDA73F, 0xC2E801FB244576D5},  // 1e-287
+-        {0x6B43527578C1110F, 0xF3A20279ED56D48A},  // 1e-286
+-        {0x830A13896B78AAA9, 0x9845418C345644D6},  // 1e-285
+-        {0x23CC986BC656D553, 0xBE5691EF416BD60C},  // 1e-284
+-        {0x2CBFBE86B7EC8AA8, 0xEDEC366B11C6CB8F},  // 1e-283
+-        {0x7BF7D71432F3D6A9, 0x94B3A202EB1C3F39},  // 1e-282
+-        {0xDAF5CCD93FB0CC53, 0xB9E08A83A5E34F07},  // 1e-281
+-        {0xD1B3400F8F9CFF68, 0xE858AD248F5C22C9},  // 1e-280
+-        {0x23100809B9C21FA1, 0x91376C36D99995BE},  // 1e-279
+-        {0xABD40A0C2832A78A, 0xB58547448FFFFB2D},  // 1e-278
+-        {0x16C90C8F323F516C, 0xE2E69915B3FFF9F9},  // 1e-277
+-        {0xAE3DA7D97F6792E3, 0x8DD01FAD907FFC3B},  // 1e-276
+-        {0x99CD11CFDF41779C, 0xB1442798F49FFB4A},  // 1e-275
+-        {0x40405643D711D583, 0xDD95317F31C7FA1D},  // 1e-274
+-        {0x482835EA666B2572, 0x8A7D3EEF7F1CFC52},  // 1e-273
+-        {0xDA3243650005EECF, 0xAD1C8EAB5EE43B66},  // 1e-272
+-        {0x90BED43E40076A82, 0xD863B256369D4A40},  // 1e-271
+-        {0x5A7744A6E804A291, 0x873E4F75E2224E68},  // 1e-270
+-        {0x711515D0A205CB36, 0xA90DE3535AAAE202},  // 1e-269
+-        {0x0D5A5B44CA873E03, 0xD3515C2831559A83},  // 1e-268
+-        {0xE858790AFE9486C2, 0x8412D9991ED58091},  // 1e-267
+-        {0x626E974DBE39A872, 0xA5178FFF668AE0B6},  // 1e-266
+-        {0xFB0A3D212DC8128F, 0xCE5D73FF402D98E3},  // 1e-265
+-        {0x7CE66634BC9D0B99, 0x80FA687F881C7F8E},  // 1e-264
+-        {0x1C1FFFC1EBC44E80, 0xA139029F6A239F72},  // 1e-263
+-        {0xA327FFB266B56220, 0xC987434744AC874E},  // 1e-262
+-        {0x4BF1FF9F0062BAA8, 0xFBE9141915D7A922},  // 1e-261
+-        {0x6F773FC3603DB4A9, 0x9D71AC8FADA6C9B5},  // 1e-260
+-        {0xCB550FB4384D21D3, 0xC4CE17B399107C22},  // 1e-259
+-        {0x7E2A53A146606A48, 0xF6019DA07F549B2B},  // 1e-258
+-        {0x2EDA7444CBFC426D, 0x99C102844F94E0FB},  // 1e-257
+-        {0xFA911155FEFB5308, 0xC0314325637A1939},  // 1e-256
+-        {0x793555AB7EBA27CA, 0xF03D93EEBC589F88},  // 1e-255
+-        {0x4BC1558B2F3458DE, 0x96267C7535B763B5},  // 1e-254
+-        {0x9EB1AAEDFB016F16, 0xBBB01B9283253CA2},  // 1e-253
+-        {0x465E15A979C1CADC, 0xEA9C227723EE8BCB},  // 1e-252
+-        {0x0BFACD89EC191EC9, 0x92A1958A7675175F},  // 1e-251
+-        {0xCEF980EC671F667B, 0xB749FAED14125D36},  // 1e-250
+-        {0x82B7E12780E7401A, 0xE51C79A85916F484},  // 1e-249
+-        {0xD1B2ECB8B0908810, 0x8F31CC0937AE58D2},  // 1e-248
+-        {0x861FA7E6DCB4AA15, 0xB2FE3F0B8599EF07},  // 1e-247
+-        {0x67A791E093E1D49A, 0xDFBDCECE67006AC9},  // 1e-246
+-        {0xE0C8BB2C5C6D24E0, 0x8BD6A141006042BD},  // 1e-245
+-        {0x58FAE9F773886E18, 0xAECC49914078536D},  // 1e-244
+-        {0xAF39A475506A899E, 0xDA7F5BF590966848},  // 1e-243
+-        {0x6D8406C952429603, 0x888F99797A5E012D},  // 1e-242
+-        {0xC8E5087BA6D33B83, 0xAAB37FD7D8F58178},  // 1e-241
+-        {0xFB1E4A9A90880A64, 0xD5605FCDCF32E1D6},  // 1e-240
+-        {0x5CF2EEA09A55067F, 0x855C3BE0A17FCD26},  // 1e-239
+-        {0xF42FAA48C0EA481E, 0xA6B34AD8C9DFC06F},  // 1e-238
+-        {0xF13B94DAF124DA26, 0xD0601D8EFC57B08B},  // 1e-237
+-        {0x76C53D08D6B70858, 0x823C12795DB6CE57},  // 1e-236
+-        {0x54768C4B0C64CA6E, 0xA2CB1717B52481ED},  // 1e-235
+-        {0xA9942F5DCF7DFD09, 0xCB7DDCDDA26DA268},  // 1e-234
+-        {0xD3F93B35435D7C4C, 0xFE5D54150B090B02},  // 1e-233
+-        {0xC47BC5014A1A6DAF, 0x9EFA548D26E5A6E1},  // 1e-232
+-        {0x359AB6419CA1091B, 0xC6B8E9B0709F109A},  // 1e-231
+-        {0xC30163D203C94B62, 0xF867241C8CC6D4C0},  // 1e-230
+-        {0x79E0DE63425DCF1D, 0x9B407691D7FC44F8},  // 1e-229
+-        {0x985915FC12F542E4, 0xC21094364DFB5636},  // 1e-228
+-        {0x3E6F5B7B17B2939D, 0xF294B943E17A2BC4},  // 1e-227
+-        {0xA705992CEECF9C42, 0x979CF3CA6CEC5B5A},  // 1e-226
+-        {0x50C6FF782A838353, 0xBD8430BD08277231},  // 1e-225
+-        {0xA4F8BF5635246428, 0xECE53CEC4A314EBD},  // 1e-224
+-        {0x871B7795E136BE99, 0x940F4613AE5ED136},  // 1e-223
+-        {0x28E2557B59846E3F, 0xB913179899F68584},  // 1e-222
+-        {0x331AEADA2FE589CF, 0xE757DD7EC07426E5},  // 1e-221
+-        {0x3FF0D2C85DEF7621, 0x9096EA6F3848984F},  // 1e-220
+-        {0x0FED077A756B53A9, 0xB4BCA50B065ABE63},  // 1e-219
+-        {0xD3E8495912C62894, 0xE1EBCE4DC7F16DFB},  // 1e-218
+-        {0x64712DD7ABBBD95C, 0x8D3360F09CF6E4BD},  // 1e-217
+-        {0xBD8D794D96AACFB3, 0xB080392CC4349DEC},  // 1e-216
+-        {0xECF0D7A0FC5583A0, 0xDCA04777F541C567},  // 1e-215
+-        {0xF41686C49DB57244, 0x89E42CAAF9491B60},  // 1e-214
+-        {0x311C2875C522CED5, 0xAC5D37D5B79B6239},  // 1e-213
+-        {0x7D633293366B828B, 0xD77485CB25823AC7},  // 1e-212
+-        {0xAE5DFF9C02033197, 0x86A8D39EF77164BC},  // 1e-211
+-        {0xD9F57F830283FDFC, 0xA8530886B54DBDEB},  // 1e-210
+-        {0xD072DF63C324FD7B, 0xD267CAA862A12D66},  // 1e-209
+-        {0x4247CB9E59F71E6D, 0x8380DEA93DA4BC60},  // 1e-208
+-        {0x52D9BE85F074E608, 0xA46116538D0DEB78},  // 1e-207
+-        {0x67902E276C921F8B, 0xCD795BE870516656},  // 1e-206
+-        {0x00BA1CD8A3DB53B6, 0x806BD9714632DFF6},  // 1e-205
+-        {0x80E8A40ECCD228A4, 0xA086CFCD97BF97F3},  // 1e-204
+-        {0x6122CD128006B2CD, 0xC8A883C0FDAF7DF0},  // 1e-203
+-        {0x796B805720085F81, 0xFAD2A4B13D1B5D6C},  // 1e-202
+-        {0xCBE3303674053BB0, 0x9CC3A6EEC6311A63},  // 1e-201
+-        {0xBEDBFC4411068A9C, 0xC3F490AA77BD60FC},  // 1e-200
+-        {0xEE92FB5515482D44, 0xF4F1B4D515ACB93B},  // 1e-199
+-        {0x751BDD152D4D1C4A, 0x991711052D8BF3C5},  // 1e-198
+-        {0xD262D45A78A0635D, 0xBF5CD54678EEF0B6},  // 1e-197
+-        {0x86FB897116C87C34, 0xEF340A98172AACE4},  // 1e-196
+-        {0xD45D35E6AE3D4DA0, 0x9580869F0E7AAC0E},  // 1e-195
+-        {0x8974836059CCA109, 0xBAE0A846D2195712},  // 1e-194
+-        {0x2BD1A438703FC94B, 0xE998D258869FACD7},  // 1e-193
+-        {0x7B6306A34627DDCF, 0x91FF83775423CC06},  // 1e-192
+-        {0x1A3BC84C17B1D542, 0xB67F6455292CBF08},  // 1e-191
+-        {0x20CABA5F1D9E4A93, 0xE41F3D6A7377EECA},  // 1e-190
+-        {0x547EB47B7282EE9C, 0x8E938662882AF53E},  // 1e-189
+-        {0xE99E619A4F23AA43, 0xB23867FB2A35B28D},  // 1e-188
+-        {0x6405FA00E2EC94D4, 0xDEC681F9F4C31F31},  // 1e-187
+-        {0xDE83BC408DD3DD04, 0x8B3C113C38F9F37E},  // 1e-186
+-        {0x9624AB50B148D445, 0xAE0B158B4738705E},  // 1e-185
+-        {0x3BADD624DD9B0957, 0xD98DDAEE19068C76},  // 1e-184
+-        {0xE54CA5D70A80E5D6, 0x87F8A8D4CFA417C9},  // 1e-183
+-        {0x5E9FCF4CCD211F4C, 0xA9F6D30A038D1DBC},  // 1e-182
+-        {0x7647C3200069671F, 0xD47487CC8470652B},  // 1e-181
+-        {0x29ECD9F40041E073, 0x84C8D4DFD2C63F3B},  // 1e-180
+-        {0xF468107100525890, 0xA5FB0A17C777CF09},  // 1e-179
+-        {0x7182148D4066EEB4, 0xCF79CC9DB955C2CC},  // 1e-178
+-        {0xC6F14CD848405530, 0x81AC1FE293D599BF},  // 1e-177
+-        {0xB8ADA00E5A506A7C, 0xA21727DB38CB002F},  // 1e-176
+-        {0xA6D90811F0E4851C, 0xCA9CF1D206FDC03B},  // 1e-175
+-        {0x908F4A166D1DA663, 0xFD442E4688BD304A},  // 1e-174
+-        {0x9A598E4E043287FE, 0x9E4A9CEC15763E2E},  // 1e-173
+-        {0x40EFF1E1853F29FD, 0xC5DD44271AD3CDBA},  // 1e-172
+-        {0xD12BEE59E68EF47C, 0xF7549530E188C128},  // 1e-171
+-        {0x82BB74F8301958CE, 0x9A94DD3E8CF578B9},  // 1e-170
+-        {0xE36A52363C1FAF01, 0xC13A148E3032D6E7},  // 1e-169
+-        {0xDC44E6C3CB279AC1, 0xF18899B1BC3F8CA1},  // 1e-168
+-        {0x29AB103A5EF8C0B9, 0x96F5600F15A7B7E5},  // 1e-167
+-        {0x7415D448F6B6F0E7, 0xBCB2B812DB11A5DE},  // 1e-166
+-        {0x111B495B3464AD21, 0xEBDF661791D60F56},  // 1e-165
+-        {0xCAB10DD900BEEC34, 0x936B9FCEBB25C995},  // 1e-164
+-        {0x3D5D514F40EEA742, 0xB84687C269EF3BFB},  // 1e-163
+-        {0x0CB4A5A3112A5112, 0xE65829B3046B0AFA},  // 1e-162
+-        {0x47F0E785EABA72AB, 0x8FF71A0FE2C2E6DC},  // 1e-161
+-        {0x59ED216765690F56, 0xB3F4E093DB73A093},  // 1e-160
+-        {0x306869C13EC3532C, 0xE0F218B8D25088B8},  // 1e-159
+-        {0x1E414218C73A13FB, 0x8C974F7383725573},  // 1e-158
+-        {0xE5D1929EF90898FA, 0xAFBD2350644EEACF},  // 1e-157
+-        {0xDF45F746B74ABF39, 0xDBAC6C247D62A583},  // 1e-156
+-        {0x6B8BBA8C328EB783, 0x894BC396CE5DA772},  // 1e-155
+-        {0x066EA92F3F326564, 0xAB9EB47C81F5114F},  // 1e-154
+-        {0xC80A537B0EFEFEBD, 0xD686619BA27255A2},  // 1e-153
+-        {0xBD06742CE95F5F36, 0x8613FD0145877585},  // 1e-152
+-        {0x2C48113823B73704, 0xA798FC4196E952E7},  // 1e-151
+-        {0xF75A15862CA504C5, 0xD17F3B51FCA3A7A0},  // 1e-150
+-        {0x9A984D73DBE722FB, 0x82EF85133DE648C4},  // 1e-149
+-        {0xC13E60D0D2E0EBBA, 0xA3AB66580D5FDAF5},  // 1e-148
+-        {0x318DF905079926A8, 0xCC963FEE10B7D1B3},  // 1e-147
+-        {0xFDF17746497F7052, 0xFFBBCFE994E5C61F},  // 1e-146
+-        {0xFEB6EA8BEDEFA633, 0x9FD561F1FD0F9BD3},  // 1e-145
+-        {0xFE64A52EE96B8FC0, 0xC7CABA6E7C5382C8},  // 1e-144
+-        {0x3DFDCE7AA3C673B0, 0xF9BD690A1B68637B},  // 1e-143
+-        {0x06BEA10CA65C084E, 0x9C1661A651213E2D},  // 1e-142
+-        {0x486E494FCFF30A62, 0xC31BFA0FE5698DB8},  // 1e-141
+-        {0x5A89DBA3C3EFCCFA, 0xF3E2F893DEC3F126},  // 1e-140
+-        {0xF89629465A75E01C, 0x986DDB5C6B3A76B7},  // 1e-139
+-        {0xF6BBB397F1135823, 0xBE89523386091465},  // 1e-138
+-        {0x746AA07DED582E2C, 0xEE2BA6C0678B597F},  // 1e-137
+-        {0xA8C2A44EB4571CDC, 0x94DB483840B717EF},  // 1e-136
+-        {0x92F34D62616CE413, 0xBA121A4650E4DDEB},  // 1e-135
+-        {0x77B020BAF9C81D17, 0xE896A0D7E51E1566},  // 1e-134
+-        {0x0ACE1474DC1D122E, 0x915E2486EF32CD60},  // 1e-133
+-        {0x0D819992132456BA, 0xB5B5ADA8AAFF80B8},  // 1e-132
+-        {0x10E1FFF697ED6C69, 0xE3231912D5BF60E6},  // 1e-131
+-        {0xCA8D3FFA1EF463C1, 0x8DF5EFABC5979C8F},  // 1e-130
+-        {0xBD308FF8A6B17CB2, 0xB1736B96B6FD83B3},  // 1e-129
+-        {0xAC7CB3F6D05DDBDE, 0xDDD0467C64BCE4A0},  // 1e-128
+-        {0x6BCDF07A423AA96B, 0x8AA22C0DBEF60EE4},  // 1e-127
+-        {0x86C16C98D2C953C6, 0xAD4AB7112EB3929D},  // 1e-126
+-        {0xE871C7BF077BA8B7, 0xD89D64D57A607744},  // 1e-125
+-        {0x11471CD764AD4972, 0x87625F056C7C4A8B},  // 1e-124
+-        {0xD598E40D3DD89BCF, 0xA93AF6C6C79B5D2D},  // 1e-123
+-        {0x4AFF1D108D4EC2C3, 0xD389B47879823479},  // 1e-122
+-        {0xCEDF722A585139BA, 0x843610CB4BF160CB},  // 1e-121
+-        {0xC2974EB4EE658828, 0xA54394FE1EEDB8FE},  // 1e-120
+-        {0x733D226229FEEA32, 0xCE947A3DA6A9273E},  // 1e-119
+-        {0x0806357D5A3F525F, 0x811CCC668829B887},  // 1e-118
+-        {0xCA07C2DCB0CF26F7, 0xA163FF802A3426A8},  // 1e-117
+-        {0xFC89B393DD02F0B5, 0xC9BCFF6034C13052},  // 1e-116
+-        {0xBBAC2078D443ACE2, 0xFC2C3F3841F17C67},  // 1e-115
+-        {0xD54B944B84AA4C0D, 0x9D9BA7832936EDC0},  // 1e-114
+-        {0x0A9E795E65D4DF11, 0xC5029163F384A931},  // 1e-113
+-        {0x4D4617B5FF4A16D5, 0xF64335BCF065D37D},  // 1e-112
+-        {0x504BCED1BF8E4E45, 0x99EA0196163FA42E},  // 1e-111
+-        {0xE45EC2862F71E1D6, 0xC06481FB9BCF8D39},  // 1e-110
+-        {0x5D767327BB4E5A4C, 0xF07DA27A82C37088},  // 1e-109
+-        {0x3A6A07F8D510F86F, 0x964E858C91BA2655},  // 1e-108
+-        {0x890489F70A55368B, 0xBBE226EFB628AFEA},  // 1e-107
+-        {0x2B45AC74CCEA842E, 0xEADAB0ABA3B2DBE5},  // 1e-106
+-        {0x3B0B8BC90012929D, 0x92C8AE6B464FC96F},  // 1e-105
+-        {0x09CE6EBB40173744, 0xB77ADA0617E3BBCB},  // 1e-104
+-        {0xCC420A6A101D0515, 0xE55990879DDCAABD},  // 1e-103
+-        {0x9FA946824A12232D, 0x8F57FA54C2A9EAB6},  // 1e-102
+-        {0x47939822DC96ABF9, 0xB32DF8E9F3546564},  // 1e-101
+-        {0x59787E2B93BC56F7, 0xDFF9772470297EBD},  // 1e-100
+-        {0x57EB4EDB3C55B65A, 0x8BFBEA76C619EF36},  // 1e-99
+-        {0xEDE622920B6B23F1, 0xAEFAE51477A06B03},  // 1e-98
+-        {0xE95FAB368E45ECED, 0xDAB99E59958885C4},  // 1e-97
+-        {0x11DBCB0218EBB414, 0x88B402F7FD75539B},  // 1e-96
+-        {0xD652BDC29F26A119, 0xAAE103B5FCD2A881},  // 1e-95
+-        {0x4BE76D3346F0495F, 0xD59944A37C0752A2},  // 1e-94
+-        {0x6F70A4400C562DDB, 0x857FCAE62D8493A5},  // 1e-93
+-        {0xCB4CCD500F6BB952, 0xA6DFBD9FB8E5B88E},  // 1e-92
+-        {0x7E2000A41346A7A7, 0xD097AD07A71F26B2},  // 1e-91
+-        {0x8ED400668C0C28C8, 0x825ECC24C873782F},  // 1e-90
+-        {0x728900802F0F32FA, 0xA2F67F2DFA90563B},  // 1e-89
+-        {0x4F2B40A03AD2FFB9, 0xCBB41EF979346BCA},  // 1e-88
+-        {0xE2F610C84987BFA8, 0xFEA126B7D78186BC},  // 1e-87
+-        {0x0DD9CA7D2DF4D7C9, 0x9F24B832E6B0F436},  // 1e-86
+-        {0x91503D1C79720DBB, 0xC6EDE63FA05D3143},  // 1e-85
+-        {0x75A44C6397CE912A, 0xF8A95FCF88747D94},  // 1e-84
+-        {0xC986AFBE3EE11ABA, 0x9B69DBE1B548CE7C},  // 1e-83
+-        {0xFBE85BADCE996168, 0xC24452DA229B021B},  // 1e-82
+-        {0xFAE27299423FB9C3, 0xF2D56790AB41C2A2},  // 1e-81
+-        {0xDCCD879FC967D41A, 0x97C560BA6B0919A5},  // 1e-80
+-        {0x5400E987BBC1C920, 0xBDB6B8E905CB600F},  // 1e-79
+-        {0x290123E9AAB23B68, 0xED246723473E3813},  // 1e-78
+-        {0xF9A0B6720AAF6521, 0x9436C0760C86E30B},  // 1e-77
+-        {0xF808E40E8D5B3E69, 0xB94470938FA89BCE},  // 1e-76
+-        {0xB60B1D1230B20E04, 0xE7958CB87392C2C2},  // 1e-75
+-        {0xB1C6F22B5E6F48C2, 0x90BD77F3483BB9B9},  // 1e-74
+-        {0x1E38AEB6360B1AF3, 0xB4ECD5F01A4AA828},  // 1e-73
+-        {0x25C6DA63C38DE1B0, 0xE2280B6C20DD5232},  // 1e-72
+-        {0x579C487E5A38AD0E, 0x8D590723948A535F},  // 1e-71
+-        {0x2D835A9DF0C6D851, 0xB0AF48EC79ACE837},  // 1e-70
+-        {0xF8E431456CF88E65, 0xDCDB1B2798182244},  // 1e-69
+-        {0x1B8E9ECB641B58FF, 0x8A08F0F8BF0F156B},  // 1e-68
+-        {0xE272467E3D222F3F, 0xAC8B2D36EED2DAC5},  // 1e-67
+-        {0x5B0ED81DCC6ABB0F, 0xD7ADF884AA879177},  // 1e-66
+-        {0x98E947129FC2B4E9, 0x86CCBB52EA94BAEA},  // 1e-65
+-        {0x3F2398D747B36224, 0xA87FEA27A539E9A5},  // 1e-64
+-        {0x8EEC7F0D19A03AAD, 0xD29FE4B18E88640E},  // 1e-63
+-        {0x1953CF68300424AC, 0x83A3EEEEF9153E89},  // 1e-62
+-        {0x5FA8C3423C052DD7, 0xA48CEAAAB75A8E2B},  // 1e-61
+-        {0x3792F412CB06794D, 0xCDB02555653131B6},  // 1e-60
+-        {0xE2BBD88BBEE40BD0, 0x808E17555F3EBF11},  // 1e-59
+-        {0x5B6ACEAEAE9D0EC4, 0xA0B19D2AB70E6ED6},  // 1e-58
+-        {0xF245825A5A445275, 0xC8DE047564D20A8B},  // 1e-57
+-        {0xEED6E2F0F0D56712, 0xFB158592BE068D2E},  // 1e-56
+-        {0x55464DD69685606B, 0x9CED737BB6C4183D},  // 1e-55
+-        {0xAA97E14C3C26B886, 0xC428D05AA4751E4C},  // 1e-54
+-        {0xD53DD99F4B3066A8, 0xF53304714D9265DF},  // 1e-53
+-        {0xE546A8038EFE4029, 0x993FE2C6D07B7FAB},  // 1e-52
+-        {0xDE98520472BDD033, 0xBF8FDB78849A5F96},  // 1e-51
+-        {0x963E66858F6D4440, 0xEF73D256A5C0F77C},  // 1e-50
+-        {0xDDE7001379A44AA8, 0x95A8637627989AAD},  // 1e-49
+-        {0x5560C018580D5D52, 0xBB127C53B17EC159},  // 1e-48
+-        {0xAAB8F01E6E10B4A6, 0xE9D71B689DDE71AF},  // 1e-47
+-        {0xCAB3961304CA70E8, 0x9226712162AB070D},  // 1e-46
+-        {0x3D607B97C5FD0D22, 0xB6B00D69BB55C8D1},  // 1e-45
+-        {0x8CB89A7DB77C506A, 0xE45C10C42A2B3B05},  // 1e-44
+-        {0x77F3608E92ADB242, 0x8EB98A7A9A5B04E3},  // 1e-43
+-        {0x55F038B237591ED3, 0xB267ED1940F1C61C},  // 1e-42
+-        {0x6B6C46DEC52F6688, 0xDF01E85F912E37A3},  // 1e-41
+-        {0x2323AC4B3B3DA015, 0x8B61313BBABCE2C6},  // 1e-40
+-        {0xABEC975E0A0D081A, 0xAE397D8AA96C1B77},  // 1e-39
+-        {0x96E7BD358C904A21, 0xD9C7DCED53C72255},  // 1e-38
+-        {0x7E50D64177DA2E54, 0x881CEA14545C7575},  // 1e-37
+-        {0xDDE50BD1D5D0B9E9, 0xAA242499697392D2},  // 1e-36
+-        {0x955E4EC64B44E864, 0xD4AD2DBFC3D07787},  // 1e-35
+-        {0xBD5AF13BEF0B113E, 0x84EC3C97DA624AB4},  // 1e-34
+-        {0xECB1AD8AEACDD58E, 0xA6274BBDD0FADD61},  // 1e-33
+-        {0x67DE18EDA5814AF2, 0xCFB11EAD453994BA},  // 1e-32
+-        {0x80EACF948770CED7, 0x81CEB32C4B43FCF4},  // 1e-31
+-        {0xA1258379A94D028D, 0xA2425FF75E14FC31},  // 1e-30
+-        {0x096EE45813A04330, 0xCAD2F7F5359A3B3E},  // 1e-29
+-        {0x8BCA9D6E188853FC, 0xFD87B5F28300CA0D},  // 1e-28
+-        {0x775EA264CF55347D, 0x9E74D1B791E07E48},  // 1e-27
+-        {0x95364AFE032A819D, 0xC612062576589DDA},  // 1e-26
+-        {0x3A83DDBD83F52204, 0xF79687AED3EEC551},  // 1e-25
+-        {0xC4926A9672793542, 0x9ABE14CD44753B52},  // 1e-24
+-        {0x75B7053C0F178293, 0xC16D9A0095928A27},  // 1e-23
+-        {0x5324C68B12DD6338, 0xF1C90080BAF72CB1},  // 1e-22
+-        {0xD3F6FC16EBCA5E03, 0x971DA05074DA7BEE},  // 1e-21
+-        {0x88F4BB1CA6BCF584, 0xBCE5086492111AEA},  // 1e-20
+-        {0x2B31E9E3D06C32E5, 0xEC1E4A7DB69561A5},  // 1e-19
+-        {0x3AFF322E62439FCF, 0x9392EE8E921D5D07},  // 1e-18
+-        {0x09BEFEB9FAD487C2, 0xB877AA3236A4B449},  // 1e-17
+-        {0x4C2EBE687989A9B3, 0xE69594BEC44DE15B},  // 1e-16
+-        {0x0F9D37014BF60A10, 0x901D7CF73AB0ACD9},  // 1e-15
+-        {0x538484C19EF38C94, 0xB424DC35095CD80F},  // 1e-14
+-        {0x2865A5F206B06FB9, 0xE12E13424BB40E13},  // 1e-13
+-        {0xF93F87B7442E45D3, 0x8CBCCC096F5088CB},  // 1e-12
+-        {0xF78F69A51539D748, 0xAFEBFF0BCB24AAFE},  // 1e-11
+-        {0xB573440E5A884D1B, 0xDBE6FECEBDEDD5BE},  // 1e-10
+-        {0x31680A88F8953030, 0x89705F4136B4A597},  // 1e-9
+-        {0xFDC20D2B36BA7C3D, 0xABCC77118461CEFC},  // 1e-8
+-        {0x3D32907604691B4C, 0xD6BF94D5E57A42BC},  // 1e-7
+-        {0xA63F9A49C2C1B10F, 0x8637BD05AF6C69B5},  // 1e-6
+-        {0x0FCF80DC33721D53, 0xA7C5AC471B478423},  // 1e-5
+-        {0xD3C36113404EA4A8, 0xD1B71758E219652B},  // 1e-4
+-        {0x645A1CAC083126E9, 0x83126E978D4FDF3B},  // 1e-3
+-        {0x3D70A3D70A3D70A3, 0xA3D70A3D70A3D70A},  // 1e-2
+-        {0xCCCCCCCCCCCCCCCC, 0xCCCCCCCCCCCCCCCC},  // 1e-1
+-        {0x0000000000000000, 0x8000000000000000},  // 1e0
+-        {0x0000000000000000, 0xA000000000000000},  // 1e1
+-        {0x0000000000000000, 0xC800000000000000},  // 1e2
+-        {0x0000000000000000, 0xFA00000000000000},  // 1e3
+-        {0x0000000000000000, 0x9C40000000000000},  // 1e4
+-        {0x0000000000000000, 0xC350000000000000},  // 1e5
+-        {0x0000000000000000, 0xF424000000000000},  // 1e6
+-        {0x0000000000000000, 0x9896800000000000},  // 1e7
+-        {0x0000000000000000, 0xBEBC200000000000},  // 1e8
+-        {0x0000000000000000, 0xEE6B280000000000},  // 1e9
+-        {0x0000000000000000, 0x9502F90000000000},  // 1e10
+-        {0x0000000000000000, 0xBA43B74000000000},  // 1e11
+-        {0x0000000000000000, 0xE8D4A51000000000},  // 1e12
+-        {0x0000000000000000, 0x9184E72A00000000},  // 1e13
+-        {0x0000000000000000, 0xB5E620F480000000},  // 1e14
+-        {0x0000000000000000, 0xE35FA931A0000000},  // 1e15
+-        {0x0000000000000000, 0x8E1BC9BF04000000},  // 1e16
+-        {0x0000000000000000, 0xB1A2BC2EC5000000},  // 1e17
+-        {0x0000000000000000, 0xDE0B6B3A76400000},  // 1e18
+-        {0x0000000000000000, 0x8AC7230489E80000},  // 1e19
+-        {0x0000000000000000, 0xAD78EBC5AC620000},  // 1e20
+-        {0x0000000000000000, 0xD8D726B7177A8000},  // 1e21
+-        {0x0000000000000000, 0x878678326EAC9000},  // 1e22
+-        {0x0000000000000000, 0xA968163F0A57B400},  // 1e23
+-        {0x0000000000000000, 0xD3C21BCECCEDA100},  // 1e24
+-        {0x0000000000000000, 0x84595161401484A0},  // 1e25
+-        {0x0000000000000000, 0xA56FA5B99019A5C8},  // 1e26
+-        {0x0000000000000000, 0xCECB8F27F4200F3A},  // 1e27
+-        {0x4000000000000000, 0x813F3978F8940984},  // 1e28
+-        {0x5000000000000000, 0xA18F07D736B90BE5},  // 1e29
+-        {0xA400000000000000, 0xC9F2C9CD04674EDE},  // 1e30
+-        {0x4D00000000000000, 0xFC6F7C4045812296},  // 1e31
+-        {0xF020000000000000, 0x9DC5ADA82B70B59D},  // 1e32
+-        {0x6C28000000000000, 0xC5371912364CE305},  // 1e33
+-        {0xC732000000000000, 0xF684DF56C3E01BC6},  // 1e34
+-        {0x3C7F400000000000, 0x9A130B963A6C115C},  // 1e35
+-        {0x4B9F100000000000, 0xC097CE7BC90715B3},  // 1e36
+-        {0x1E86D40000000000, 0xF0BDC21ABB48DB20},  // 1e37
+-        {0x1314448000000000, 0x96769950B50D88F4},  // 1e38
+-        {0x17D955A000000000, 0xBC143FA4E250EB31},  // 1e39
+-        {0x5DCFAB0800000000, 0xEB194F8E1AE525FD},  // 1e40
+-        {0x5AA1CAE500000000, 0x92EFD1B8D0CF37BE},  // 1e41
+-        {0xF14A3D9E40000000, 0xB7ABC627050305AD},  // 1e42
+-        {0x6D9CCD05D0000000, 0xE596B7B0C643C719},  // 1e43
+-        {0xE4820023A2000000, 0x8F7E32CE7BEA5C6F},  // 1e44
+-        {0xDDA2802C8A800000, 0xB35DBF821AE4F38B},  // 1e45
+-        {0xD50B2037AD200000, 0xE0352F62A19E306E},  // 1e46
+-        {0x4526F422CC340000, 0x8C213D9DA502DE45},  // 1e47
+-        {0x9670B12B7F410000, 0xAF298D050E4395D6},  // 1e48
+-        {0x3C0CDD765F114000, 0xDAF3F04651D47B4C},  // 1e49
+-        {0xA5880A69FB6AC800, 0x88D8762BF324CD0F},  // 1e50
+-        {0x8EEA0D047A457A00, 0xAB0E93B6EFEE0053},  // 1e51
+-        {0x72A4904598D6D880, 0xD5D238A4ABE98068},  // 1e52
+-        {0x47A6DA2B7F864750, 0x85A36366EB71F041},  // 1e53
+-        {0x999090B65F67D924, 0xA70C3C40A64E6C51},  // 1e54
+-        {0xFFF4B4E3F741CF6D, 0xD0CF4B50CFE20765},  // 1e55
+-        {0xBFF8F10E7A8921A4, 0x82818F1281ED449F},  // 1e56
+-        {0xAFF72D52192B6A0D, 0xA321F2D7226895C7},  // 1e57
+-        {0x9BF4F8A69F764490, 0xCBEA6F8CEB02BB39},  // 1e58
+-        {0x02F236D04753D5B4, 0xFEE50B7025C36A08},  // 1e59
+-        {0x01D762422C946590, 0x9F4F2726179A2245},  // 1e60
+-        {0x424D3AD2B7B97EF5, 0xC722F0EF9D80AAD6},  // 1e61
+-        {0xD2E0898765A7DEB2, 0xF8EBAD2B84E0D58B},  // 1e62
+-        {0x63CC55F49F88EB2F, 0x9B934C3B330C8577},  // 1e63
+-        {0x3CBF6B71C76B25FB, 0xC2781F49FFCFA6D5},  // 1e64
+-        {0x8BEF464E3945EF7A, 0xF316271C7FC3908A},  // 1e65
+-        {0x97758BF0E3CBB5AC, 0x97EDD871CFDA3A56},  // 1e66
+-        {0x3D52EEED1CBEA317, 0xBDE94E8E43D0C8EC},  // 1e67
+-        {0x4CA7AAA863EE4BDD, 0xED63A231D4C4FB27},  // 1e68
+-        {0x8FE8CAA93E74EF6A, 0x945E455F24FB1CF8},  // 1e69
+-        {0xB3E2FD538E122B44, 0xB975D6B6EE39E436},  // 1e70
+-        {0x60DBBCA87196B616, 0xE7D34C64A9C85D44},  // 1e71
+-        {0xBC8955E946FE31CD, 0x90E40FBEEA1D3A4A},  // 1e72
+-        {0x6BABAB6398BDBE41, 0xB51D13AEA4A488DD},  // 1e73
+-        {0xC696963C7EED2DD1, 0xE264589A4DCDAB14},  // 1e74
+-        {0xFC1E1DE5CF543CA2, 0x8D7EB76070A08AEC},  // 1e75
+-        {0x3B25A55F43294BCB, 0xB0DE65388CC8ADA8},  // 1e76
+-        {0x49EF0EB713F39EBE, 0xDD15FE86AFFAD912},  // 1e77
+-        {0x6E3569326C784337, 0x8A2DBF142DFCC7AB},  // 1e78
+-        {0x49C2C37F07965404, 0xACB92ED9397BF996},  // 1e79
+-        {0xDC33745EC97BE906, 0xD7E77A8F87DAF7FB},  // 1e80
+-        {0x69A028BB3DED71A3, 0x86F0AC99B4E8DAFD},  // 1e81
+-        {0xC40832EA0D68CE0C, 0xA8ACD7C0222311BC},  // 1e82
+-        {0xF50A3FA490C30190, 0xD2D80DB02AABD62B},  // 1e83
+-        {0x792667C6DA79E0FA, 0x83C7088E1AAB65DB},  // 1e84
+-        {0x577001B891185938, 0xA4B8CAB1A1563F52},  // 1e85
+-        {0xED4C0226B55E6F86, 0xCDE6FD5E09ABCF26},  // 1e86
+-        {0x544F8158315B05B4, 0x80B05E5AC60B6178},  // 1e87
+-        {0x696361AE3DB1C721, 0xA0DC75F1778E39D6},  // 1e88
+-        {0x03BC3A19CD1E38E9, 0xC913936DD571C84C},  // 1e89
+-        {0x04AB48A04065C723, 0xFB5878494ACE3A5F},  // 1e90
+-        {0x62EB0D64283F9C76, 0x9D174B2DCEC0E47B},  // 1e91
+-        {0x3BA5D0BD324F8394, 0xC45D1DF942711D9A},  // 1e92
+-        {0xCA8F44EC7EE36479, 0xF5746577930D6500},  // 1e93
+-        {0x7E998B13CF4E1ECB, 0x9968BF6ABBE85F20},  // 1e94
+-        {0x9E3FEDD8C321A67E, 0xBFC2EF456AE276E8},  // 1e95
+-        {0xC5CFE94EF3EA101E, 0xEFB3AB16C59B14A2},  // 1e96
+-        {0xBBA1F1D158724A12, 0x95D04AEE3B80ECE5},  // 1e97
+-        {0x2A8A6E45AE8EDC97, 0xBB445DA9CA61281F},  // 1e98
+-        {0xF52D09D71A3293BD, 0xEA1575143CF97226},  // 1e99
+-        {0x593C2626705F9C56, 0x924D692CA61BE758},  // 1e100
+-        {0x6F8B2FB00C77836C, 0xB6E0C377CFA2E12E},  // 1e101
+-        {0x0B6DFB9C0F956447, 0xE498F455C38B997A},  // 1e102
+-        {0x4724BD4189BD5EAC, 0x8EDF98B59A373FEC},  // 1e103
+-        {0x58EDEC91EC2CB657, 0xB2977EE300C50FE7},  // 1e104
+-        {0x2F2967B66737E3ED, 0xDF3D5E9BC0F653E1},  // 1e105
+-        {0xBD79E0D20082EE74, 0x8B865B215899F46C},  // 1e106
+-        {0xECD8590680A3AA11, 0xAE67F1E9AEC07187},  // 1e107
+-        {0xE80E6F4820CC9495, 0xDA01EE641A708DE9},  // 1e108
+-        {0x3109058D147FDCDD, 0x884134FE908658B2},  // 1e109
+-        {0xBD4B46F0599FD415, 0xAA51823E34A7EEDE},  // 1e110
+-        {0x6C9E18AC7007C91A, 0xD4E5E2CDC1D1EA96},  // 1e111
+-        {0x03E2CF6BC604DDB0, 0x850FADC09923329E},  // 1e112
+-        {0x84DB8346B786151C, 0xA6539930BF6BFF45},  // 1e113
+-        {0xE612641865679A63, 0xCFE87F7CEF46FF16},  // 1e114
+-        {0x4FCB7E8F3F60C07E, 0x81F14FAE158C5F6E},  // 1e115
+-        {0xE3BE5E330F38F09D, 0xA26DA3999AEF7749},  // 1e116
+-        {0x5CADF5BFD3072CC5, 0xCB090C8001AB551C},  // 1e117
+-        {0x73D9732FC7C8F7F6, 0xFDCB4FA002162A63},  // 1e118
+-        {0x2867E7FDDCDD9AFA, 0x9E9F11C4014DDA7E},  // 1e119
+-        {0xB281E1FD541501B8, 0xC646D63501A1511D},  // 1e120
+-        {0x1F225A7CA91A4226, 0xF7D88BC24209A565},  // 1e121
+-        {0x3375788DE9B06958, 0x9AE757596946075F},  // 1e122
+-        {0x0052D6B1641C83AE, 0xC1A12D2FC3978937},  // 1e123
+-        {0xC0678C5DBD23A49A, 0xF209787BB47D6B84},  // 1e124
+-        {0xF840B7BA963646E0, 0x9745EB4D50CE6332},  // 1e125
+-        {0xB650E5A93BC3D898, 0xBD176620A501FBFF},  // 1e126
+-        {0xA3E51F138AB4CEBE, 0xEC5D3FA8CE427AFF},  // 1e127
+-        {0xC66F336C36B10137, 0x93BA47C980E98CDF},  // 1e128
+-        {0xB80B0047445D4184, 0xB8A8D9BBE123F017},  // 1e129
+-        {0xA60DC059157491E5, 0xE6D3102AD96CEC1D},  // 1e130
+-        {0x87C89837AD68DB2F, 0x9043EA1AC7E41392},  // 1e131
+-        {0x29BABE4598C311FB, 0xB454E4A179DD1877},  // 1e132
+-        {0xF4296DD6FEF3D67A, 0xE16A1DC9D8545E94},  // 1e133
+-        {0x1899E4A65F58660C, 0x8CE2529E2734BB1D},  // 1e134
+-        {0x5EC05DCFF72E7F8F, 0xB01AE745B101E9E4},  // 1e135
+-        {0x76707543F4FA1F73, 0xDC21A1171D42645D},  // 1e136
+-        {0x6A06494A791C53A8, 0x899504AE72497EBA},  // 1e137
+-        {0x0487DB9D17636892, 0xABFA45DA0EDBDE69},  // 1e138
+-        {0x45A9D2845D3C42B6, 0xD6F8D7509292D603},  // 1e139
+-        {0x0B8A2392BA45A9B2, 0x865B86925B9BC5C2},  // 1e140
+-        {0x8E6CAC7768D7141E, 0xA7F26836F282B732},  // 1e141
+-        {0x3207D795430CD926, 0xD1EF0244AF2364FF},  // 1e142
+-        {0x7F44E6BD49E807B8, 0x8335616AED761F1F},  // 1e143
+-        {0x5F16206C9C6209A6, 0xA402B9C5A8D3A6E7},  // 1e144
+-        {0x36DBA887C37A8C0F, 0xCD036837130890A1},  // 1e145
+-        {0xC2494954DA2C9789, 0x802221226BE55A64},  // 1e146
+-        {0xF2DB9BAA10B7BD6C, 0xA02AA96B06DEB0FD},  // 1e147
+-        {0x6F92829494E5ACC7, 0xC83553C5C8965D3D},  // 1e148
+-        {0xCB772339BA1F17F9, 0xFA42A8B73ABBF48C},  // 1e149
+-        {0xFF2A760414536EFB, 0x9C69A97284B578D7},  // 1e150
+-        {0xFEF5138519684ABA, 0xC38413CF25E2D70D},  // 1e151
+-        {0x7EB258665FC25D69, 0xF46518C2EF5B8CD1},  // 1e152
+-        {0xEF2F773FFBD97A61, 0x98BF2F79D5993802},  // 1e153
+-        {0xAAFB550FFACFD8FA, 0xBEEEFB584AFF8603},  // 1e154
+-        {0x95BA2A53F983CF38, 0xEEAABA2E5DBF6784},  // 1e155
+-        {0xDD945A747BF26183, 0x952AB45CFA97A0B2},  // 1e156
+-        {0x94F971119AEEF9E4, 0xBA756174393D88DF},  // 1e157
+-        {0x7A37CD5601AAB85D, 0xE912B9D1478CEB17},  // 1e158
+-        {0xAC62E055C10AB33A, 0x91ABB422CCB812EE},  // 1e159
+-        {0x577B986B314D6009, 0xB616A12B7FE617AA},  // 1e160
+-        {0xED5A7E85FDA0B80B, 0xE39C49765FDF9D94},  // 1e161
+-        {0x14588F13BE847307, 0x8E41ADE9FBEBC27D},  // 1e162
+-        {0x596EB2D8AE258FC8, 0xB1D219647AE6B31C},  // 1e163
+-        {0x6FCA5F8ED9AEF3BB, 0xDE469FBD99A05FE3},  // 1e164
+-        {0x25DE7BB9480D5854, 0x8AEC23D680043BEE},  // 1e165
+-        {0xAF561AA79A10AE6A, 0xADA72CCC20054AE9},  // 1e166
+-        {0x1B2BA1518094DA04, 0xD910F7FF28069DA4},  // 1e167
+-        {0x90FB44D2F05D0842, 0x87AA9AFF79042286},  // 1e168
+-        {0x353A1607AC744A53, 0xA99541BF57452B28},  // 1e169
+-        {0x42889B8997915CE8, 0xD3FA922F2D1675F2},  // 1e170
+-        {0x69956135FEBADA11, 0x847C9B5D7C2E09B7},  // 1e171
+-        {0x43FAB9837E699095, 0xA59BC234DB398C25},  // 1e172
+-        {0x94F967E45E03F4BB, 0xCF02B2C21207EF2E},  // 1e173
+-        {0x1D1BE0EEBAC278F5, 0x8161AFB94B44F57D},  // 1e174
+-        {0x6462D92A69731732, 0xA1BA1BA79E1632DC},  // 1e175
+-        {0x7D7B8F7503CFDCFE, 0xCA28A291859BBF93},  // 1e176
+-        {0x5CDA735244C3D43E, 0xFCB2CB35E702AF78},  // 1e177
+-        {0x3A0888136AFA64A7, 0x9DEFBF01B061ADAB},  // 1e178
+-        {0x088AAA1845B8FDD0, 0xC56BAEC21C7A1916},  // 1e179
+-        {0x8AAD549E57273D45, 0xF6C69A72A3989F5B},  // 1e180
+-        {0x36AC54E2F678864B, 0x9A3C2087A63F6399},  // 1e181
+-        {0x84576A1BB416A7DD, 0xC0CB28A98FCF3C7F},  // 1e182
+-        {0x656D44A2A11C51D5, 0xF0FDF2D3F3C30B9F},  // 1e183
+-        {0x9F644AE5A4B1B325, 0x969EB7C47859E743},  // 1e184
+-        {0x873D5D9F0DDE1FEE, 0xBC4665B596706114},  // 1e185
+-        {0xA90CB506D155A7EA, 0xEB57FF22FC0C7959},  // 1e186
+-        {0x09A7F12442D588F2, 0x9316FF75DD87CBD8},  // 1e187
+-        {0x0C11ED6D538AEB2F, 0xB7DCBF5354E9BECE},  // 1e188
+-        {0x8F1668C8A86DA5FA, 0xE5D3EF282A242E81},  // 1e189
+-        {0xF96E017D694487BC, 0x8FA475791A569D10},  // 1e190
+-        {0x37C981DCC395A9AC, 0xB38D92D760EC4455},  // 1e191
+-        {0x85BBE253F47B1417, 0xE070F78D3927556A},  // 1e192
+-        {0x93956D7478CCEC8E, 0x8C469AB843B89562},  // 1e193
+-        {0x387AC8D1970027B2, 0xAF58416654A6BABB},  // 1e194
+-        {0x06997B05FCC0319E, 0xDB2E51BFE9D0696A},  // 1e195
+-        {0x441FECE3BDF81F03, 0x88FCF317F22241E2},  // 1e196
+-        {0xD527E81CAD7626C3, 0xAB3C2FDDEEAAD25A},  // 1e197
+-        {0x8A71E223D8D3B074, 0xD60B3BD56A5586F1},  // 1e198
+-        {0xF6872D5667844E49, 0x85C7056562757456},  // 1e199
+-        {0xB428F8AC016561DB, 0xA738C6BEBB12D16C},  // 1e200
+-        {0xE13336D701BEBA52, 0xD106F86E69D785C7},  // 1e201
+-        {0xECC0024661173473, 0x82A45B450226B39C},  // 1e202
+-        {0x27F002D7F95D0190, 0xA34D721642B06084},  // 1e203
+-        {0x31EC038DF7B441F4, 0xCC20CE9BD35C78A5},  // 1e204
+-        {0x7E67047175A15271, 0xFF290242C83396CE},  // 1e205
+-        {0x0F0062C6E984D386, 0x9F79A169BD203E41},  // 1e206
+-        {0x52C07B78A3E60868, 0xC75809C42C684DD1},  // 1e207
+-        {0xA7709A56CCDF8A82, 0xF92E0C3537826145},  // 1e208
+-        {0x88A66076400BB691, 0x9BBCC7A142B17CCB},  // 1e209
+-        {0x6ACFF893D00EA435, 0xC2ABF989935DDBFE},  // 1e210
+-        {0x0583F6B8C4124D43, 0xF356F7EBF83552FE},  // 1e211
+-        {0xC3727A337A8B704A, 0x98165AF37B2153DE},  // 1e212
+-        {0x744F18C0592E4C5C, 0xBE1BF1B059E9A8D6},  // 1e213
+-        {0x1162DEF06F79DF73, 0xEDA2EE1C7064130C},  // 1e214
+-        {0x8ADDCB5645AC2BA8, 0x9485D4D1C63E8BE7},  // 1e215
+-        {0x6D953E2BD7173692, 0xB9A74A0637CE2EE1},  // 1e216
+-        {0xC8FA8DB6CCDD0437, 0xE8111C87C5C1BA99},  // 1e217
+-        {0x1D9C9892400A22A2, 0x910AB1D4DB9914A0},  // 1e218
+-        {0x2503BEB6D00CAB4B, 0xB54D5E4A127F59C8},  // 1e219
+-        {0x2E44AE64840FD61D, 0xE2A0B5DC971F303A},  // 1e220
+-        {0x5CEAECFED289E5D2, 0x8DA471A9DE737E24},  // 1e221
+-        {0x7425A83E872C5F47, 0xB10D8E1456105DAD},  // 1e222
+-        {0xD12F124E28F77719, 0xDD50F1996B947518},  // 1e223
+-        {0x82BD6B70D99AAA6F, 0x8A5296FFE33CC92F},  // 1e224
+-        {0x636CC64D1001550B, 0xACE73CBFDC0BFB7B},  // 1e225
+-        {0x3C47F7E05401AA4E, 0xD8210BEFD30EFA5A},  // 1e226
+-        {0x65ACFAEC34810A71, 0x8714A775E3E95C78},  // 1e227
+-        {0x7F1839A741A14D0D, 0xA8D9D1535CE3B396},  // 1e228
+-        {0x1EDE48111209A050, 0xD31045A8341CA07C},  // 1e229
+-        {0x934AED0AAB460432, 0x83EA2B892091E44D},  // 1e230
+-        {0xF81DA84D5617853F, 0xA4E4B66B68B65D60},  // 1e231
+-        {0x36251260AB9D668E, 0xCE1DE40642E3F4B9},  // 1e232
+-        {0xC1D72B7C6B426019, 0x80D2AE83E9CE78F3},  // 1e233
+-        {0xB24CF65B8612F81F, 0xA1075A24E4421730},  // 1e234
+-        {0xDEE033F26797B627, 0xC94930AE1D529CFC},  // 1e235
+-        {0x169840EF017DA3B1, 0xFB9B7CD9A4A7443C},  // 1e236
+-        {0x8E1F289560EE864E, 0x9D412E0806E88AA5},  // 1e237
+-        {0xF1A6F2BAB92A27E2, 0xC491798A08A2AD4E},  // 1e238
+-        {0xAE10AF696774B1DB, 0xF5B5D7EC8ACB58A2},  // 1e239
+-        {0xACCA6DA1E0A8EF29, 0x9991A6F3D6BF1765},  // 1e240
+-        {0x17FD090A58D32AF3, 0xBFF610B0CC6EDD3F},  // 1e241
+-        {0xDDFC4B4CEF07F5B0, 0xEFF394DCFF8A948E},  // 1e242
+-        {0x4ABDAF101564F98E, 0x95F83D0A1FB69CD9},  // 1e243
+-        {0x9D6D1AD41ABE37F1, 0xBB764C4CA7A4440F},  // 1e244
+-        {0x84C86189216DC5ED, 0xEA53DF5FD18D5513},  // 1e245
+-        {0x32FD3CF5B4E49BB4, 0x92746B9BE2F8552C},  // 1e246
+-        {0x3FBC8C33221DC2A1, 0xB7118682DBB66A77},  // 1e247
+-        {0x0FABAF3FEAA5334A, 0xE4D5E82392A40515},  // 1e248
+-        {0x29CB4D87F2A7400E, 0x8F05B1163BA6832D},  // 1e249
+-        {0x743E20E9EF511012, 0xB2C71D5BCA9023F8},  // 1e250
+-        {0x914DA9246B255416, 0xDF78E4B2BD342CF6},  // 1e251
+-        {0x1AD089B6C2F7548E, 0x8BAB8EEFB6409C1A},  // 1e252
+-        {0xA184AC2473B529B1, 0xAE9672ABA3D0C320},  // 1e253
+-        {0xC9E5D72D90A2741E, 0xDA3C0F568CC4F3E8},  // 1e254
+-        {0x7E2FA67C7A658892, 0x8865899617FB1871},  // 1e255
+-        {0xDDBB901B98FEEAB7, 0xAA7EEBFB9DF9DE8D},  // 1e256
+-        {0x552A74227F3EA565, 0xD51EA6FA85785631},  // 1e257
+-        {0xD53A88958F87275F, 0x8533285C936B35DE},  // 1e258
+-        {0x8A892ABAF368F137, 0xA67FF273B8460356},  // 1e259
+-        {0x2D2B7569B0432D85, 0xD01FEF10A657842C},  // 1e260
+-        {0x9C3B29620E29FC73, 0x8213F56A67F6B29B},  // 1e261
+-        {0x8349F3BA91B47B8F, 0xA298F2C501F45F42},  // 1e262
+-        {0x241C70A936219A73, 0xCB3F2F7642717713},  // 1e263
+-        {0xED238CD383AA0110, 0xFE0EFB53D30DD4D7},  // 1e264
+-        {0xF4363804324A40AA, 0x9EC95D1463E8A506},  // 1e265
+-        {0xB143C6053EDCD0D5, 0xC67BB4597CE2CE48},  // 1e266
+-        {0xDD94B7868E94050A, 0xF81AA16FDC1B81DA},  // 1e267
+-        {0xCA7CF2B4191C8326, 0x9B10A4E5E9913128},  // 1e268
+-        {0xFD1C2F611F63A3F0, 0xC1D4CE1F63F57D72},  // 1e269
+-        {0xBC633B39673C8CEC, 0xF24A01A73CF2DCCF},  // 1e270
+-        {0xD5BE0503E085D813, 0x976E41088617CA01},  // 1e271
+-        {0x4B2D8644D8A74E18, 0xBD49D14AA79DBC82},  // 1e272
+-        {0xDDF8E7D60ED1219E, 0xEC9C459D51852BA2},  // 1e273
+-        {0xCABB90E5C942B503, 0x93E1AB8252F33B45},  // 1e274
+-        {0x3D6A751F3B936243, 0xB8DA1662E7B00A17},  // 1e275
+-        {0x0CC512670A783AD4, 0xE7109BFBA19C0C9D},  // 1e276
+-        {0x27FB2B80668B24C5, 0x906A617D450187E2},  // 1e277
+-        {0xB1F9F660802DEDF6, 0xB484F9DC9641E9DA},  // 1e278
+-        {0x5E7873F8A0396973, 0xE1A63853BBD26451},  // 1e279
+-        {0xDB0B487B6423E1E8, 0x8D07E33455637EB2},  // 1e280
+-        {0x91CE1A9A3D2CDA62, 0xB049DC016ABC5E5F},  // 1e281
+-        {0x7641A140CC7810FB, 0xDC5C5301C56B75F7},  // 1e282
+-        {0xA9E904C87FCB0A9D, 0x89B9B3E11B6329BA},  // 1e283
+-        {0x546345FA9FBDCD44, 0xAC2820D9623BF429},  // 1e284
+-        {0xA97C177947AD4095, 0xD732290FBACAF133},  // 1e285
+-        {0x49ED8EABCCCC485D, 0x867F59A9D4BED6C0},  // 1e286
+-        {0x5C68F256BFFF5A74, 0xA81F301449EE8C70},  // 1e287
+-        {0x73832EEC6FFF3111, 0xD226FC195C6A2F8C},  // 1e288
+-};
++// ---------------- Auxiliary - JSON
+ 
+-// wuffs_base__private_implementation__f64_powers_of_10 holds powers of 10 that
+-// can be exactly represented by a float64 (what C calls a double).
+-static const double wuffs_base__private_implementation__f64_powers_of_10[23] = {
+-    1e0,  1e1,  1e2,  1e3,  1e4,  1e5,  1e6,  1e7,  1e8,  1e9,  1e10, 1e11,
+-    1e12, 1e13, 1e14, 1e15, 1e16, 1e17, 1e18, 1e19, 1e20, 1e21, 1e22,
++namespace wuffs_aux {
++
++struct DecodeJsonResult {
++  DecodeJsonResult(std::string&& error_message0, uint64_t cursor_position0);
++
++  std::string error_message;
++  uint64_t cursor_position;
+ };
+ 
+-// ---------------- IEEE 754 Floating Point
++class DecodeJsonCallbacks {
++ public:
++  virtual ~DecodeJsonCallbacks();
+ 
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__lossy_value_u16  //
+-wuffs_base__ieee_754_bit_representation__from_f64_to_u16_truncate(double f) {
+-  uint64_t u = 0;
+-  if (sizeof(uint64_t) == sizeof(double)) {
+-    memcpy(&u, &f, sizeof(uint64_t));
+-  }
+-  uint16_t neg = ((uint16_t)((u >> 63) << 15));
+-  u &= 0x7FFFFFFFFFFFFFFF;
+-  uint64_t exp = u >> 52;
+-  uint64_t man = u & 0x000FFFFFFFFFFFFF;
++  // AppendXxx are called for leaf nodes: literals, numbers and strings. For
++  // strings, the Callbacks implementation is responsible for tracking map keys
++  // versus other values.
+ 
+-  if (exp == 0x7FF) {
+-    if (man == 0) {  // Infinity.
+-      wuffs_base__lossy_value_u16 ret;
+-      ret.value = neg | 0x7C00;
+-      ret.lossy = false;
+-      return ret;
+-    }
+-    // NaN. Shift the 52 mantissa bits to 10 mantissa bits, keeping the most
+-    // significant mantissa bit (quiet vs signaling NaNs). Also set the low 9
+-    // bits of ret.value so that the 10-bit mantissa is non-zero.
+-    wuffs_base__lossy_value_u16 ret;
+-    ret.value = neg | 0x7DFF | ((uint16_t)(man >> 42));
+-    ret.lossy = false;
+-    return ret;
++  virtual std::string AppendNull() = 0;
++  virtual std::string AppendBool(bool val) = 0;
++  virtual std::string AppendF64(double val) = 0;
++  virtual std::string AppendI64(int64_t val) = 0;
++  virtual std::string AppendTextString(std::string&& val) = 0;
+ 
+-  } else if (exp > 0x40E) {  // Truncate to the largest finite f16.
+-    wuffs_base__lossy_value_u16 ret;
+-    ret.value = neg | 0x7BFF;
+-    ret.lossy = true;
+-    return ret;
++  // Push and Pop are called for container nodes: JSON arrays (lists) and JSON
++  // objects (dictionaries).
++  //
++  // The flags bits combine exactly one of:
++  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_NONE
++  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_LIST
++  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_DICT
++  // and exactly one of:
++  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE
++  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST
++  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT
+ 
+-  } else if (exp <= 0x3E6) {  // Truncate to zero.
+-    wuffs_base__lossy_value_u16 ret;
+-    ret.value = neg;
+-    ret.lossy = (u != 0);
+-    return ret;
++  virtual std::string Push(uint32_t flags) = 0;
++  virtual std::string Pop(uint32_t flags) = 0;
+ 
+-  } else if (exp <= 0x3F0) {  // Normal f64, subnormal f16.
+-    // Convert from a 53-bit mantissa (after realizing the implicit bit) to a
+-    // 10-bit mantissa and then adjust for the exponent.
+-    man |= 0x0010000000000000;
+-    uint32_t shift = ((uint32_t)(1051 - exp));  // 1051 = 0x3F0 + 53 - 10.
+-    uint64_t shifted_man = man >> shift;
+-    wuffs_base__lossy_value_u16 ret;
+-    ret.value = neg | ((uint16_t)shifted_man);
+-    ret.lossy = (shifted_man << shift) != man;
+-    return ret;
+-  }
++  // Done is always the last Callback method called by DecodeJson, whether or
++  // not parsing the input as JSON encountered an error. Even when successful,
++  // trailing data may remain in input and buffer. See "Unintuitive JSON
++  // Parsing" (https://nullprogram.com/blog/2019/12/28/) which discusses JSON
++  // parsing and when it stops.
++  //
++  // Do not keep a reference to buffer or buffer.data.ptr after Done returns,
++  // as DecodeJson may then de-allocate the backing array.
++  //
++  // The default Done implementation is a no-op.
++  virtual void  //
++  Done(DecodeJsonResult& result, sync_io::Input& input, IOBuffer& buffer);
++};
+ 
+-  // Normal f64, normal f16.
++extern const char DecodeJson_BadJsonPointer[];
++extern const char DecodeJson_NoMatch[];
+ 
+-  // Re-bias from 1023 to 15 and shift above f16's 10 mantissa bits.
+-  exp = (exp - 1008) << 10;  // 1008 = 1023 - 15 = 0x3FF - 0xF.
++// The FooArgBar types add structure to Foo's optional arguments. They wrap
++// inner representations for several reasons:
++//  - It provides a home for the DefaultValue static method, for Foo callers
++//    that want to override some but not all optional arguments.
++//  - It provides the "Bar" name at Foo call sites, which can help self-
++//    document Foo calls with many arguemnts.
++//  - It provides some type safety against accidentally transposing or omitting
++//    adjacent fundamentally-numeric-typed optional arguments.
+ 
+-  // Convert from a 52-bit mantissa (excluding the implicit bit) to a 10-bit
+-  // mantissa (again excluding the implicit bit). We lose some information if
+-  // any of the bottom 42 bits are non-zero.
+-  wuffs_base__lossy_value_u16 ret;
+-  ret.value = neg | ((uint16_t)exp) | ((uint16_t)(man >> 42));
+-  ret.lossy = (man << 22) != 0;
+-  return ret;
+-}
++// DecodeJsonArgQuirks wraps an optional argument to DecodeJson.
++struct DecodeJsonArgQuirks {
++  explicit DecodeJsonArgQuirks(const QuirkKeyValuePair* ptr0,
++                               const size_t len0);
+ 
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__lossy_value_u32  //
+-wuffs_base__ieee_754_bit_representation__from_f64_to_u32_truncate(double f) {
+-  uint64_t u = 0;
+-  if (sizeof(uint64_t) == sizeof(double)) {
+-    memcpy(&u, &f, sizeof(uint64_t));
+-  }
+-  uint32_t neg = ((uint32_t)(u >> 63)) << 31;
+-  u &= 0x7FFFFFFFFFFFFFFF;
+-  uint64_t exp = u >> 52;
+-  uint64_t man = u & 0x000FFFFFFFFFFFFF;
++  // DefaultValue returns an empty slice.
++  static DecodeJsonArgQuirks DefaultValue();
+ 
+-  if (exp == 0x7FF) {
+-    if (man == 0) {  // Infinity.
+-      wuffs_base__lossy_value_u32 ret;
+-      ret.value = neg | 0x7F800000;
+-      ret.lossy = false;
+-      return ret;
+-    }
+-    // NaN. Shift the 52 mantissa bits to 23 mantissa bits, keeping the most
+-    // significant mantissa bit (quiet vs signaling NaNs). Also set the low 22
+-    // bits of ret.value so that the 23-bit mantissa is non-zero.
+-    wuffs_base__lossy_value_u32 ret;
+-    ret.value = neg | 0x7FBFFFFF | ((uint32_t)(man >> 29));
+-    ret.lossy = false;
+-    return ret;
++  const QuirkKeyValuePair* ptr;
++  const size_t len;
++};
+ 
+-  } else if (exp > 0x47E) {  // Truncate to the largest finite f32.
+-    wuffs_base__lossy_value_u32 ret;
+-    ret.value = neg | 0x7F7FFFFF;
+-    ret.lossy = true;
+-    return ret;
++// DecodeJsonArgJsonPointer wraps an optional argument to DecodeJson.
++struct DecodeJsonArgJsonPointer {
++  explicit DecodeJsonArgJsonPointer(std::string repr0);
+ 
+-  } else if (exp <= 0x369) {  // Truncate to zero.
+-    wuffs_base__lossy_value_u32 ret;
+-    ret.value = neg;
+-    ret.lossy = (u != 0);
+-    return ret;
++  // DefaultValue returns an empty string.
++  static DecodeJsonArgJsonPointer DefaultValue();
+ 
+-  } else if (exp <= 0x380) {  // Normal f64, subnormal f32.
+-    // Convert from a 53-bit mantissa (after realizing the implicit bit) to a
+-    // 23-bit mantissa and then adjust for the exponent.
+-    man |= 0x0010000000000000;
+-    uint32_t shift = ((uint32_t)(926 - exp));  // 926 = 0x380 + 53 - 23.
+-    uint64_t shifted_man = man >> shift;
+-    wuffs_base__lossy_value_u32 ret;
+-    ret.value = neg | ((uint32_t)shifted_man);
+-    ret.lossy = (shifted_man << shift) != man;
+-    return ret;
+-  }
++  std::string repr;
++};
+ 
+-  // Normal f64, normal f32.
++// DecodeJson calls callbacks based on the JSON-formatted data in input.
++//
++// On success, the returned error_message is empty and cursor_position counts
++// the number of bytes consumed. On failure, error_message is non-empty and
++// cursor_position is the location of the error. That error may be a content
++// error (invalid JSON) or an input error (e.g. network failure).
++//
++// json_pointer is a query in the JSON Pointer (RFC 6901) syntax. The callbacks
++// run for the input's sub-node that matches the query. DecodeJson_NoMatch is
++// returned if no matching sub-node was found. The empty query matches the
++// input's root node, consistent with JSON Pointer semantics.
++//
++// The JSON Pointer implementation is greedy: duplicate keys are not rejected
++// but only the first match for each '/'-separated fragment is followed.
++DecodeJsonResult  //
++DecodeJson(DecodeJsonCallbacks& callbacks,
++           sync_io::Input& input,
++           DecodeJsonArgQuirks quirks = DecodeJsonArgQuirks::DefaultValue(),
++           DecodeJsonArgJsonPointer json_pointer =
++               DecodeJsonArgJsonPointer::DefaultValue());
+ 
+-  // Re-bias from 1023 to 127 and shift above f32's 23 mantissa bits.
+-  exp = (exp - 896) << 23;  // 896 = 1023 - 127 = 0x3FF - 0x7F.
++}  // namespace wuffs_aux
+ 
+-  // Convert from a 52-bit mantissa (excluding the implicit bit) to a 23-bit
+-  // mantissa (again excluding the implicit bit). We lose some information if
+-  // any of the bottom 29 bits are non-zero.
+-  wuffs_base__lossy_value_u32 ret;
+-  ret.value = neg | ((uint32_t)exp) | ((uint32_t)(man >> 29));
+-  ret.lossy = (man << 35) != 0;
+-  return ret;
+-}
++#endif  // defined(__cplusplus) && defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
+ 
+-// --------
++// ‼ WUFFS C HEADER ENDS HERE.
++#ifdef WUFFS_IMPLEMENTATION
+ 
+-#define WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE 2047
+-#define WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION 800
++#ifdef __cplusplus
++extern "C" {
++#endif
+ 
+-// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL is the largest N
+-// such that ((10 << N) < (1 << 64)).
+-#define WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL 60
++// ---------------- Fundamentals
+ 
+-// wuffs_base__private_implementation__high_prec_dec (abbreviated as HPD) is a
+-// fixed precision floating point decimal number, augmented with ±infinity
+-// values, but it cannot represent NaN (Not a Number).
++// WUFFS_BASE__MAGIC is a magic number to check that initializers are called.
++// It's not foolproof, given C doesn't automatically zero memory before use,
++// but it should catch 99.99% of cases.
+ //
+-// "High precision" means that the mantissa holds 800 decimal digits. 800 is
+-// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION.
++// Its (non-zero) value is arbitrary, based on md5sum("wuffs").
++#define WUFFS_BASE__MAGIC ((uint32_t)0x3CCB6C71)
++
++// WUFFS_BASE__DISABLED is a magic number to indicate that a non-recoverable
++// error was previously encountered.
+ //
+-// An HPD isn't for general purpose arithmetic, only for conversions to and
+-// from IEEE 754 double-precision floating point, where the largest and
+-// smallest positive, finite values are approximately 1.8e+308 and 4.9e-324.
+-// HPD exponents above +2047 mean infinity, below -2047 mean zero. The ±2047
+-// bounds are further away from zero than ±(324 + 800), where 800 and 2047 is
+-// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION and
+-// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE.
++// Its (non-zero) value is arbitrary, based on md5sum("disabled").
++#define WUFFS_BASE__DISABLED ((uint32_t)0x075AE3D2)
++
++// Use switch cases for coroutine suspension points, similar to the technique
++// in https://www.chiark.greenend.org.uk/~sgtatham/coroutines.html
+ //
+-// digits[.. num_digits] are the number's digits in big-endian order. The
+-// uint8_t values are in the range [0 ..= 9], not ['0' ..= '9'], where e.g. '7'
+-// is the ASCII value 0x37.
++// The implicit fallthrough is intentional.
+ //
+-// decimal_point is the index (within digits) of the decimal point. It may be
+-// negative or be larger than num_digits, in which case the explicit digits are
+-// padded with implicit zeroes.
++// We use trivial macros instead of an explicit assignment and case statement
++// so that clang-format doesn't get confused by the unusual "case"s.
++#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0 case 0:;
++#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT(n) \
++  coro_susp_point = n;                            \
++  case n:;
++
++#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(n) \
++  if (!status.repr) {                                           \
++    goto ok;                                                    \
++  } else if (*status.repr != '$') {                             \
++    goto exit;                                                  \
++  }                                                             \
++  coro_susp_point = n;                                          \
++  goto suspend;                                                 \
++  case n:;
++
++// The "defined(__clang__)" isn't redundant. While vanilla clang defines
++// __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not.
++#if defined(__GNUC__) || defined(__clang__)
++#define WUFFS_BASE__LIKELY(expr) (__builtin_expect(!!(expr), 1))
++#define WUFFS_BASE__UNLIKELY(expr) (__builtin_expect(!!(expr), 0))
++#else
++#define WUFFS_BASE__LIKELY(expr) (expr)
++#define WUFFS_BASE__UNLIKELY(expr) (expr)
++#endif
++
++// --------
++
++static inline wuffs_base__empty_struct  //
++wuffs_private_impl__ignore_status(wuffs_base__status z) {
++  return wuffs_base__make_empty_struct();
++}
++
++static inline wuffs_base__status  //
++wuffs_private_impl__status__ensure_not_a_suspension(wuffs_base__status z) {
++  if (z.repr && (*z.repr == '$')) {
++    z.repr = wuffs_base__error__cannot_return_a_suspension;
++  }
++  return z;
++}
++
++// --------
++
++// wuffs_private_impl__iterate_total_advance returns the exclusive
++// pointer-offset at which iteration should stop. The overall slice has length
++// total_len, each iteration's sub-slice has length iter_len and are placed
++// iter_advance apart.
+ //
+-// For example, if num_digits is 3 and digits is "\x07\x08\x09":
+-//  - A decimal_point of -2 means ".00789"
+-//  - A decimal_point of -1 means ".0789"
+-//  - A decimal_point of +0 means ".789"
+-//  - A decimal_point of +1 means "7.89"
+-//  - A decimal_point of +2 means "78.9"
+-//  - A decimal_point of +3 means "789."
+-//  - A decimal_point of +4 means "7890."
+-//  - A decimal_point of +5 means "78900."
++// The iter_advance may not be larger than iter_len. The iter_advance may be
++// smaller than iter_len, in which case the sub-slices will overlap.
+ //
+-// As above, a decimal_point higher than +2047 means that the overall value is
+-// infinity, lower than -2047 means zero.
++// The return value r satisfies ((0 <= r) && (r <= total_len)).
+ //
+-// negative is a sign bit. An HPD can distinguish positive and negative zero.
++// For example, if total_len = 15, iter_len = 5 and iter_advance = 3, there are
++// four iterations at offsets 0, 3, 6 and 9. This function returns 12.
+ //
+-// truncated is whether there are more than
+-// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION digits, and at
+-// least one of those extra digits are non-zero. The existence of long-tail
+-// digits can affect rounding.
++// 0123456789012345
++// [....]
++//    [....]
++//       [....]
++//          [....]
++//             $
++// 0123456789012345
+ //
+-// The "all fields are zero" value is valid, and represents the number +0.
+-typedef struct wuffs_base__private_implementation__high_prec_dec__struct {
+-  uint32_t num_digits;
+-  int32_t decimal_point;
+-  bool negative;
+-  bool truncated;
+-  uint8_t digits[WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION];
+-} wuffs_base__private_implementation__high_prec_dec;
+-
+-// wuffs_base__private_implementation__high_prec_dec__trim trims trailing
+-// zeroes from the h->digits[.. h->num_digits] slice. They have no benefit,
+-// since we explicitly track h->decimal_point.
++// For example, if total_len = 15, iter_len = 5 and iter_advance = 5, there are
++// three iterations at offsets 0, 5 and 10. This function returns 15.
+ //
+-// Preconditions:
+-//  - h is non-NULL.
+-static inline void  //
+-wuffs_base__private_implementation__high_prec_dec__trim(
+-    wuffs_base__private_implementation__high_prec_dec* h) {
+-  while ((h->num_digits > 0) && (h->digits[h->num_digits - 1] == 0)) {
+-    h->num_digits--;
++// 0123456789012345
++// [....]
++//      [....]
++//           [....]
++//                $
++// 0123456789012345
++static inline size_t  //
++wuffs_private_impl__iterate_total_advance(size_t total_len,
++                                          size_t iter_len,
++                                          size_t iter_advance) {
++  if (total_len >= iter_len) {
++    size_t n = total_len - iter_len;
++    return ((n / iter_advance) * iter_advance) + iter_advance;
+   }
++  return 0;
+ }
+ 
+-// wuffs_base__private_implementation__high_prec_dec__assign sets h to
+-// represent the number x.
+-//
+-// Preconditions:
+-//  - h is non-NULL.
+-static void  //
+-wuffs_base__private_implementation__high_prec_dec__assign(
+-    wuffs_base__private_implementation__high_prec_dec* h,
+-    uint64_t x,
+-    bool negative) {
+-  uint32_t n = 0;
++// ---------------- Numeric Types
+ 
+-  // Set h->digits.
+-  if (x > 0) {
+-    // Calculate the digits, working right-to-left. After we determine n (how
+-    // many digits there are), copy from buf to h->digits.
+-    //
+-    // UINT64_MAX, 18446744073709551615, is 20 digits long. It can be faster to
+-    // copy a constant number of bytes than a variable number (20 instead of
+-    // n). Make buf large enough (and start writing to it from the middle) so
+-    // that can we always copy 20 bytes: the slice buf[(20-n) .. (40-n)].
+-    uint8_t buf[40] = {0};
+-    uint8_t* ptr = &buf[20];
+-    do {
+-      uint64_t remaining = x / 10;
+-      x -= remaining * 10;
+-      ptr--;
+-      *ptr = (uint8_t)x;
+-      n++;
+-      x = remaining;
+-    } while (x > 0);
+-    memcpy(h->digits, ptr, 20);
+-  }
++extern const uint8_t wuffs_private_impl__low_bits_mask__u8[8];
++extern const uint16_t wuffs_private_impl__low_bits_mask__u16[16];
++extern const uint32_t wuffs_private_impl__low_bits_mask__u32[32];
++extern const uint64_t wuffs_private_impl__low_bits_mask__u64[64];
+ 
+-  // Set h's other fields.
+-  h->num_digits = n;
+-  h->decimal_point = (int32_t)n;
+-  h->negative = negative;
+-  h->truncated = false;
+-  wuffs_base__private_implementation__high_prec_dec__trim(h);
++#define WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U8(n) \
++  (wuffs_private_impl__low_bits_mask__u8[n])
++#define WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U16(n) \
++  (wuffs_private_impl__low_bits_mask__u16[n])
++#define WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U32(n) \
++  (wuffs_private_impl__low_bits_mask__u32[n])
++#define WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U64(n) \
++  (wuffs_private_impl__low_bits_mask__u64[n])
++
++// --------
++
++static inline void  //
++wuffs_private_impl__u8__sat_add_indirect(uint8_t* x, uint8_t y) {
++  *x = wuffs_base__u8__sat_add(*x, y);
+ }
+ 
+-static wuffs_base__status  //
+-wuffs_base__private_implementation__high_prec_dec__parse(
+-    wuffs_base__private_implementation__high_prec_dec* h,
+-    wuffs_base__slice_u8 s,
+-    uint32_t options) {
+-  if (!h) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  h->num_digits = 0;
+-  h->decimal_point = 0;
+-  h->negative = false;
+-  h->truncated = false;
++static inline void  //
++wuffs_private_impl__u8__sat_sub_indirect(uint8_t* x, uint8_t y) {
++  *x = wuffs_base__u8__sat_sub(*x, y);
++}
+ 
+-  uint8_t* p = s.ptr;
+-  uint8_t* q = s.ptr + s.len;
++static inline void  //
++wuffs_private_impl__u16__sat_add_indirect(uint16_t* x, uint16_t y) {
++  *x = wuffs_base__u16__sat_add(*x, y);
++}
+ 
+-  if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
+-    for (;; p++) {
+-      if (p >= q) {
+-        return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-      } else if (*p != '_') {
+-        break;
+-      }
+-    }
+-  }
++static inline void  //
++wuffs_private_impl__u16__sat_sub_indirect(uint16_t* x, uint16_t y) {
++  *x = wuffs_base__u16__sat_sub(*x, y);
++}
+ 
+-  // Parse sign.
+-  do {
+-    if (*p == '+') {
+-      p++;
+-    } else if (*p == '-') {
+-      h->negative = true;
+-      p++;
+-    } else {
+-      break;
+-    }
+-    if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
+-      for (;; p++) {
+-        if (p >= q) {
+-          return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-        } else if (*p != '_') {
+-          break;
+-        }
+-      }
+-    }
+-  } while (0);
++static inline void  //
++wuffs_private_impl__u32__sat_add_indirect(uint32_t* x, uint32_t y) {
++  *x = wuffs_base__u32__sat_add(*x, y);
++}
+ 
+-  // Parse digits, up to (and including) a '.', 'E' or 'e'. Examples for each
+-  // limb in this if-else chain:
+-  //  - "0.789"
+-  //  - "1002.789"
+-  //  - ".789"
+-  //  - Other (invalid input).
+-  uint32_t nd = 0;
+-  int32_t dp = 0;
+-  bool no_digits_before_separator = false;
+-  if (('0' == *p) &&
+-      !(options &
+-        WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES)) {
+-    p++;
+-    for (;; p++) {
+-      if (p >= q) {
+-        goto after_all;
+-      } else if (*p ==
+-                 ((options &
+-                   WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
+-                      ? ','
+-                      : '.')) {
+-        p++;
+-        goto after_sep;
+-      } else if ((*p == 'E') || (*p == 'e')) {
+-        p++;
+-        goto after_exp;
+-      } else if ((*p != '_') ||
+-                 !(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
+-        return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-      }
+-    }
++static inline void  //
++wuffs_private_impl__u32__sat_sub_indirect(uint32_t* x, uint32_t y) {
++  *x = wuffs_base__u32__sat_sub(*x, y);
++}
+ 
+-  } else if (('0' <= *p) && (*p <= '9')) {
+-    if (*p == '0') {
+-      for (; (p < q) && (*p == '0'); p++) {
+-      }
+-    } else {
+-      h->digits[nd++] = (uint8_t)(*p - '0');
+-      dp = (int32_t)nd;
+-      p++;
+-    }
++static inline void  //
++wuffs_private_impl__u64__sat_add_indirect(uint64_t* x, uint64_t y) {
++  *x = wuffs_base__u64__sat_add(*x, y);
++}
+ 
+-    for (;; p++) {
+-      if (p >= q) {
+-        goto after_all;
+-      } else if (('0' <= *p) && (*p <= '9')) {
+-        if (nd < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) {
+-          h->digits[nd++] = (uint8_t)(*p - '0');
+-          dp = (int32_t)nd;
+-        } else if ('0' != *p) {
+-          // Long-tail non-zeroes set the truncated bit.
+-          h->truncated = true;
+-        }
+-      } else if (*p ==
+-                 ((options &
+-                   WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
+-                      ? ','
+-                      : '.')) {
+-        p++;
+-        goto after_sep;
+-      } else if ((*p == 'E') || (*p == 'e')) {
+-        p++;
+-        goto after_exp;
+-      } else if ((*p != '_') ||
+-                 !(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
+-        return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-      }
+-    }
++static inline void  //
++wuffs_private_impl__u64__sat_sub_indirect(uint64_t* x, uint64_t y) {
++  *x = wuffs_base__u64__sat_sub(*x, y);
++}
+ 
+-  } else if (*p == ((options &
+-                     WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
+-                        ? ','
+-                        : '.')) {
+-    p++;
+-    no_digits_before_separator = true;
++// ---------------- Numeric Types (Utility)
+ 
+-  } else {
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
++#define wuffs_base__utility__sign_extend_convert_u8_u32(a) \
++  ((uint32_t)(int32_t)(int8_t)(a))
+ 
+-after_sep:
+-  for (;; p++) {
+-    if (p >= q) {
+-      goto after_all;
+-    } else if ('0' == *p) {
+-      if (nd == 0) {
+-        // Track leading zeroes implicitly.
+-        dp--;
+-      } else if (nd <
+-                 WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) {
+-        h->digits[nd++] = (uint8_t)(*p - '0');
+-      }
+-    } else if (('0' < *p) && (*p <= '9')) {
+-      if (nd < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) {
+-        h->digits[nd++] = (uint8_t)(*p - '0');
+-      } else {
+-        // Long-tail non-zeroes set the truncated bit.
+-        h->truncated = true;
+-      }
+-    } else if ((*p == 'E') || (*p == 'e')) {
+-      p++;
+-      goto after_exp;
+-    } else if ((*p != '_') ||
+-               !(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
+-      return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-    }
+-  }
++#define wuffs_base__utility__sign_extend_convert_u16_u32(a) \
++  ((uint32_t)(int32_t)(int16_t)(a))
+ 
+-after_exp:
+-  do {
+-    if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
+-      for (;; p++) {
+-        if (p >= q) {
+-          return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-        } else if (*p != '_') {
+-          break;
+-        }
+-      }
+-    }
++#define wuffs_base__utility__sign_extend_rshift_u32(a, n) \
++  ((uint32_t)(((int32_t)(a)) >> (n)))
+ 
+-    int32_t exp_sign = +1;
+-    if (*p == '+') {
+-      p++;
+-    } else if (*p == '-') {
+-      exp_sign = -1;
+-      p++;
+-    }
++#define wuffs_base__utility__sign_extend_rshift_u64(a, n) \
++  ((uint64_t)(((int64_t)(a)) >> (n)))
+ 
+-    int32_t exp = 0;
+-    const int32_t exp_large =
+-        WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE +
+-        WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION;
+-    bool saw_exp_digits = false;
+-    for (; p < q; p++) {
+-      if ((*p == '_') &&
+-          (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
+-        // No-op.
+-      } else if (('0' <= *p) && (*p <= '9')) {
+-        saw_exp_digits = true;
+-        if (exp < exp_large) {
+-          exp = (10 * exp) + ((int32_t)(*p - '0'));
+-        }
+-      } else {
+-        break;
+-      }
+-    }
+-    if (!saw_exp_digits) {
+-      return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-    }
+-    dp += exp_sign * exp;
+-  } while (0);
++#define wuffs_base__utility__make_bitvec256(e00, e01, e02, e03) \
++  wuffs_base__make_bitvec256(e00, e01, e02, e03)
+ 
+-after_all:
+-  if (p != q) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  h->num_digits = nd;
+-  if (nd == 0) {
+-    if (no_digits_before_separator) {
+-      return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-    }
+-    h->decimal_point = 0;
+-  } else if (dp <
+-             -WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) {
+-    h->decimal_point =
+-        -WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE - 1;
+-  } else if (dp >
+-             +WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) {
+-    h->decimal_point =
+-        +WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE + 1;
+-  } else {
+-    h->decimal_point = dp;
+-  }
+-  wuffs_base__private_implementation__high_prec_dec__trim(h);
+-  return wuffs_base__make_status(NULL);
+-}
++#define wuffs_base__utility__make_optional_u63(h, v) \
++  wuffs_base__make_optional_u63(h, v)
+ 
+-// --------
++// ---------------- Slices and Tables
+ 
+-// wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits
+-// returns the number of additional decimal digits when left-shifting by shift.
++// This function basically returns (ptr + len), except that that expression is
++// Undefined Behavior in C (but not C++) when ptr is NULL, even if len is zero.
+ //
+-// See below for preconditions.
+-static uint32_t  //
+-wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits(
+-    wuffs_base__private_implementation__high_prec_dec* h,
+-    uint32_t shift) {
+-  // Masking with 0x3F should be unnecessary (assuming the preconditions) but
+-  // it's cheap and ensures that we don't overflow the
+-  // wuffs_base__private_implementation__hpd_left_shift array.
+-  shift &= 63;
++// Precondition: (ptr != NULL) || (len == 0).
++static inline const uint8_t*  //
++wuffs_private_impl__ptr_u8_plus_len(const uint8_t* ptr, size_t len) {
++  return ptr ? (ptr + len) : NULL;
++}
+ 
+-  uint32_t x_a = wuffs_base__private_implementation__hpd_left_shift[shift];
+-  uint32_t x_b = wuffs_base__private_implementation__hpd_left_shift[shift + 1];
+-  uint32_t num_new_digits = x_a >> 11;
+-  uint32_t pow5_a = 0x7FF & x_a;
+-  uint32_t pow5_b = 0x7FF & x_b;
++// --------
+ 
+-  const uint8_t* pow5 =
+-      &wuffs_base__private_implementation__powers_of_5[pow5_a];
+-  uint32_t i = 0;
+-  uint32_t n = pow5_b - pow5_a;
+-  for (; i < n; i++) {
+-    if (i >= h->num_digits) {
+-      return num_new_digits - 1;
+-    } else if (h->digits[i] == pow5[i]) {
+-      continue;
+-    } else if (h->digits[i] < pow5[i]) {
+-      return num_new_digits - 1;
+-    } else {
+-      return num_new_digits;
+-    }
++// wuffs_private_impl__slice_u8__prefix returns up to the first up_to bytes of
++// s.
++static inline wuffs_base__slice_u8  //
++wuffs_private_impl__slice_u8__prefix(wuffs_base__slice_u8 s, uint64_t up_to) {
++  if (((uint64_t)(s.len)) > up_to) {
++    s.len = ((size_t)up_to);
+   }
+-  return num_new_digits;
++  return s;
+ }
+ 
+-// --------
++// wuffs_private_impl__slice_u8__suffix returns up to the last up_to bytes of
++// s.
++static inline wuffs_base__slice_u8  //
++wuffs_private_impl__slice_u8__suffix(wuffs_base__slice_u8 s, uint64_t up_to) {
++  if (((uint64_t)(s.len)) > up_to) {
++    s.ptr += ((uint64_t)(s.len)) - up_to;
++    s.len = ((size_t)up_to);
++  }
++  return s;
++}
+ 
+-// wuffs_base__private_implementation__high_prec_dec__rounded_integer returns
+-// the integral (non-fractional) part of h, provided that it is 18 or fewer
+-// decimal digits. For 19 or more digits, it returns UINT64_MAX. Note that:
+-//  - (1 << 53) is    9007199254740992, which has 16 decimal digits.
+-//  - (1 << 56) is   72057594037927936, which has 17 decimal digits.
+-//  - (1 << 59) is  576460752303423488, which has 18 decimal digits.
+-//  - (1 << 63) is 9223372036854775808, which has 19 decimal digits.
+-// and that IEEE 754 double precision has 52 mantissa bits.
++// wuffs_private_impl__slice_u8__copy_from_slice calls memmove(dst.ptr,
++// src.ptr, len) where len is the minimum of dst.len and src.len.
+ //
+-// That integral part is rounded-to-even: rounding 7.5 or 8.5 both give 8.
+-//
+-// h's negative bit is ignored: rounding -8.6 returns 9.
+-//
+-// See below for preconditions.
+-static uint64_t  //
+-wuffs_base__private_implementation__high_prec_dec__rounded_integer(
+-    wuffs_base__private_implementation__high_prec_dec* h) {
+-  if ((h->num_digits == 0) || (h->decimal_point < 0)) {
+-    return 0;
+-  } else if (h->decimal_point > 18) {
+-    return UINT64_MAX;
++// Passing a wuffs_base__slice_u8 with all fields NULL or zero (a valid, empty
++// slice) is valid and results in a no-op.
++static inline uint64_t  //
++wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__slice_u8 dst,
++                                              wuffs_base__slice_u8 src) {
++  size_t len = dst.len < src.len ? dst.len : src.len;
++  if (len > 0) {
++    memmove(dst.ptr, src.ptr, len);
+   }
++  return len;
++}
+ 
+-  uint32_t dp = (uint32_t)(h->decimal_point);
+-  uint64_t n = 0;
+-  uint32_t i = 0;
+-  for (; i < dp; i++) {
+-    n = (10 * n) + ((i < h->num_digits) ? h->digits[i] : 0);
++static inline wuffs_base__empty_struct  //
++wuffs_private_impl__bulk_load_host_endian(void* ptr,
++                                          size_t len,
++                                          wuffs_base__slice_u8 src) {
++  if (len && (len <= src.len)) {
++    memmove(ptr, src.ptr, len);
+   }
++  return wuffs_base__make_empty_struct();
++}
+ 
+-  bool round_up = false;
+-  if (dp < h->num_digits) {
+-    round_up = h->digits[dp] >= 5;
+-    if ((h->digits[dp] == 5) && (dp + 1 == h->num_digits)) {
+-      // We are exactly halfway. If we're truncated, round up, otherwise round
+-      // to even.
+-      round_up = h->truncated ||  //
+-                 ((dp > 0) && (1 & h->digits[dp - 1]));
+-    }
+-  }
+-  if (round_up) {
+-    n++;
++static inline wuffs_base__empty_struct  //
++wuffs_private_impl__bulk_memset(void* ptr, size_t len, uint8_t byte_value) {
++  if (len) {
++    memset(ptr, byte_value, len);
+   }
++  return wuffs_base__make_empty_struct();
++}
+ 
+-  return n;
++static inline wuffs_base__empty_struct  //
++wuffs_private_impl__bulk_save_host_endian(void* ptr,
++                                          size_t len,
++                                          wuffs_base__slice_u8 dst) {
++  if (len && (len <= dst.len)) {
++    memmove(dst.ptr, ptr, len);
++  }
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-// wuffs_base__private_implementation__high_prec_dec__small_xshift shifts h's
+-// number (where 'x' is 'l' or 'r' for left or right) by a small shift value.
+-//
+-// Preconditions:
+-//  - h is non-NULL.
+-//  - h->decimal_point is "not extreme".
+-//  - shift is non-zero.
+-//  - shift is "a small shift".
+-//
+-// "Not extreme" means within
+-// ±WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE.
+-//
+-// "A small shift" means not more than
+-// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL.
+-//
+-// wuffs_base__private_implementation__high_prec_dec__rounded_integer and
+-// wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits
+-// have the same preconditions.
+-//
+-// wuffs_base__private_implementation__high_prec_dec__lshift keeps the first
+-// two preconditions but not the last two. Its shift argument is signed and
+-// does not need to be "small": zero is a no-op, positive means left shift and
+-// negative means right shift.
++// --------
+ 
+-static void  //
+-wuffs_base__private_implementation__high_prec_dec__small_lshift(
+-    wuffs_base__private_implementation__high_prec_dec* h,
+-    uint32_t shift) {
+-  if (h->num_digits == 0) {
+-    return;
++static inline wuffs_base__slice_u8  //
++wuffs_private_impl__table_u8__row_u32(wuffs_base__table_u8 t, uint32_t y) {
++  if (t.ptr && (y < t.height)) {
++    return wuffs_base__make_slice_u8(t.ptr + (t.stride * y), t.width);
+   }
+-  uint32_t num_new_digits =
+-      wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits(
+-          h, shift);
+-  uint32_t rx = h->num_digits - 1;                   // Read  index.
+-  uint32_t wx = h->num_digits - 1 + num_new_digits;  // Write index.
+-  uint64_t n = 0;
++  return wuffs_base__empty_slice_u8();
++}
+ 
+-  // Repeat: pick up a digit, put down a digit, right to left.
+-  while (((int32_t)rx) >= 0) {
+-    n += ((uint64_t)(h->digits[rx])) << shift;
+-    uint64_t quo = n / 10;
+-    uint64_t rem = n - (10 * quo);
+-    if (wx < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) {
+-      h->digits[wx] = (uint8_t)rem;
+-    } else if (rem > 0) {
+-      h->truncated = true;
+-    }
+-    n = quo;
+-    wx--;
+-    rx--;
+-  }
++// ---------------- Slices and Tables (Utility)
+ 
+-  // Put down leading digits, right to left.
+-  while (n > 0) {
+-    uint64_t quo = n / 10;
+-    uint64_t rem = n - (10 * quo);
+-    if (wx < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) {
+-      h->digits[wx] = (uint8_t)rem;
+-    } else if (rem > 0) {
+-      h->truncated = true;
+-    }
+-    n = quo;
+-    wx--;
+-  }
++#define wuffs_base__utility__empty_slice_u8 wuffs_base__empty_slice_u8
+ 
+-  // Finish.
+-  h->num_digits += num_new_digits;
+-  if (h->num_digits >
+-      WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) {
+-    h->num_digits = WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION;
+-  }
+-  h->decimal_point += (int32_t)num_new_digits;
+-  wuffs_base__private_implementation__high_prec_dec__trim(h);
++// ---------------- Ranges and Rects
++
++static inline uint32_t  //
++wuffs_private_impl__range_ii_u32__get_min_incl(
++    const wuffs_base__range_ii_u32* r) {
++  return r->min_incl;
+ }
+ 
+-static void  //
+-wuffs_base__private_implementation__high_prec_dec__small_rshift(
+-    wuffs_base__private_implementation__high_prec_dec* h,
+-    uint32_t shift) {
+-  uint32_t rx = 0;  // Read  index.
+-  uint32_t wx = 0;  // Write index.
+-  uint64_t n = 0;
++static inline uint32_t  //
++wuffs_private_impl__range_ii_u32__get_max_incl(
++    const wuffs_base__range_ii_u32* r) {
++  return r->max_incl;
++}
+ 
+-  // Pick up enough leading digits to cover the first shift.
+-  while ((n >> shift) == 0) {
+-    if (rx < h->num_digits) {
+-      // Read a digit.
+-      n = (10 * n) + h->digits[rx++];
+-    } else if (n == 0) {
+-      // h's number used to be zero and remains zero.
+-      return;
+-    } else {
+-      // Read sufficient implicit trailing zeroes.
+-      while ((n >> shift) == 0) {
+-        n = 10 * n;
+-        rx++;
+-      }
+-      break;
+-    }
+-  }
+-  h->decimal_point -= ((int32_t)(rx - 1));
+-  if (h->decimal_point <
+-      -WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) {
+-    // After the shift, h's number is effectively zero.
+-    h->num_digits = 0;
+-    h->decimal_point = 0;
+-    h->truncated = false;
+-    return;
+-  }
++static inline uint32_t  //
++wuffs_private_impl__range_ie_u32__get_min_incl(
++    const wuffs_base__range_ie_u32* r) {
++  return r->min_incl;
++}
+ 
+-  // Repeat: pick up a digit, put down a digit, left to right.
+-  uint64_t mask = (((uint64_t)(1)) << shift) - 1;
+-  while (rx < h->num_digits) {
+-    uint8_t new_digit = ((uint8_t)(n >> shift));
+-    n = (10 * (n & mask)) + h->digits[rx++];
+-    h->digits[wx++] = new_digit;
+-  }
++static inline uint32_t  //
++wuffs_private_impl__range_ie_u32__get_max_excl(
++    const wuffs_base__range_ie_u32* r) {
++  return r->max_excl;
++}
+ 
+-  // Put down trailing digits, left to right.
+-  while (n > 0) {
+-    uint8_t new_digit = ((uint8_t)(n >> shift));
+-    n = 10 * (n & mask);
+-    if (wx < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) {
+-      h->digits[wx++] = new_digit;
+-    } else if (new_digit > 0) {
+-      h->truncated = true;
+-    }
+-  }
++static inline uint64_t  //
++wuffs_private_impl__range_ii_u64__get_min_incl(
++    const wuffs_base__range_ii_u64* r) {
++  return r->min_incl;
++}
+ 
+-  // Finish.
+-  h->num_digits = wx;
+-  wuffs_base__private_implementation__high_prec_dec__trim(h);
++static inline uint64_t  //
++wuffs_private_impl__range_ii_u64__get_max_incl(
++    const wuffs_base__range_ii_u64* r) {
++  return r->max_incl;
+ }
+ 
+-static void  //
+-wuffs_base__private_implementation__high_prec_dec__lshift(
+-    wuffs_base__private_implementation__high_prec_dec* h,
+-    int32_t shift) {
+-  if (shift > 0) {
+-    while (shift > +WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL) {
+-      wuffs_base__private_implementation__high_prec_dec__small_lshift(
+-          h, WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL);
+-      shift -= WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL;
+-    }
+-    wuffs_base__private_implementation__high_prec_dec__small_lshift(
+-        h, ((uint32_t)(+shift)));
+-  } else if (shift < 0) {
+-    while (shift < -WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL) {
+-      wuffs_base__private_implementation__high_prec_dec__small_rshift(
+-          h, WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL);
+-      shift += WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL;
+-    }
+-    wuffs_base__private_implementation__high_prec_dec__small_rshift(
+-        h, ((uint32_t)(-shift)));
+-  }
++static inline uint64_t  //
++wuffs_private_impl__range_ie_u64__get_min_incl(
++    const wuffs_base__range_ie_u64* r) {
++  return r->min_incl;
+ }
+ 
+-// --------
++static inline uint64_t  //
++wuffs_private_impl__range_ie_u64__get_max_excl(
++    const wuffs_base__range_ie_u64* r) {
++  return r->max_excl;
++}
+ 
+-// wuffs_base__private_implementation__high_prec_dec__round_etc rounds h's
+-// number. For those functions that take an n argument, rounding produces at
+-// most n digits (which is not necessarily at most n decimal places). Negative
+-// n values are ignored, as well as any n greater than or equal to h's number
+-// of digits. The etc__round_just_enough function implicitly chooses an n to
+-// implement WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION.
+-//
+-// Preconditions:
+-//  - h is non-NULL.
+-//  - h->decimal_point is "not extreme".
+-//
+-// "Not extreme" means within
+-// ±WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE.
++// ---------------- Ranges and Rects (Utility)
+ 
+-static void  //
+-wuffs_base__private_implementation__high_prec_dec__round_down(
+-    wuffs_base__private_implementation__high_prec_dec* h,
+-    int32_t n) {
+-  if ((n < 0) || (h->num_digits <= (uint32_t)n)) {
+-    return;
++#define wuffs_base__utility__empty_range_ii_u32 wuffs_base__empty_range_ii_u32
++#define wuffs_base__utility__empty_range_ie_u32 wuffs_base__empty_range_ie_u32
++#define wuffs_base__utility__empty_range_ii_u64 wuffs_base__empty_range_ii_u64
++#define wuffs_base__utility__empty_range_ie_u64 wuffs_base__empty_range_ie_u64
++#define wuffs_base__utility__empty_rect_ii_u32 wuffs_base__empty_rect_ii_u32
++#define wuffs_base__utility__empty_rect_ie_u32 wuffs_base__empty_rect_ie_u32
++#define wuffs_base__utility__make_range_ii_u32 wuffs_base__make_range_ii_u32
++#define wuffs_base__utility__make_range_ie_u32 wuffs_base__make_range_ie_u32
++#define wuffs_base__utility__make_range_ii_u64 wuffs_base__make_range_ii_u64
++#define wuffs_base__utility__make_range_ie_u64 wuffs_base__make_range_ie_u64
++#define wuffs_base__utility__make_rect_ii_u32 wuffs_base__make_rect_ii_u32
++#define wuffs_base__utility__make_rect_ie_u32 wuffs_base__make_rect_ie_u32
++
++// ---------------- I/O
++
++static inline uint64_t  //
++wuffs_private_impl__io__count_since(uint64_t mark, uint64_t index) {
++  if (index >= mark) {
++    return index - mark;
+   }
+-  h->num_digits = (uint32_t)(n);
+-  wuffs_base__private_implementation__high_prec_dec__trim(h);
++  return 0;
+ }
+ 
+-static void  //
+-wuffs_base__private_implementation__high_prec_dec__round_up(
+-    wuffs_base__private_implementation__high_prec_dec* h,
+-    int32_t n) {
+-  if ((n < 0) || (h->num_digits <= (uint32_t)n)) {
+-    return;
++// TODO: drop the "const" in "const uint8_t* ptr". Some though required about
++// the base.io_reader.since method returning a mutable "slice base.u8".
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wcast-qual"
++#endif
++static inline wuffs_base__slice_u8  //
++wuffs_private_impl__io__since(uint64_t mark,
++                              uint64_t index,
++                              const uint8_t* ptr) {
++  if (index >= mark) {
++    return wuffs_base__make_slice_u8(((uint8_t*)ptr) + mark,
++                                     ((size_t)(index - mark)));
+   }
++  return wuffs_base__empty_slice_u8();
++}
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
+ 
+-  for (n--; n >= 0; n--) {
+-    if (h->digits[n] < 9) {
+-      h->digits[n]++;
+-      h->num_digits = (uint32_t)(n + 1);
+-      return;
+-    }
+-  }
++// --------
+ 
+-  // The number is all 9s. Change to a single 1 and adjust the decimal point.
+-  h->digits[0] = 1;
+-  h->num_digits = 1;
+-  h->decimal_point++;
++static inline void  //
++wuffs_private_impl__io_reader__limit(const uint8_t** ptr_io2_r,
++                                     const uint8_t* iop_r,
++                                     uint64_t limit) {
++  if (((uint64_t)(*ptr_io2_r - iop_r)) > limit) {
++    *ptr_io2_r = iop_r + limit;
++  }
+ }
+ 
+-static void  //
+-wuffs_base__private_implementation__high_prec_dec__round_nearest(
+-    wuffs_base__private_implementation__high_prec_dec* h,
+-    int32_t n) {
+-  if ((n < 0) || (h->num_digits <= (uint32_t)n)) {
+-    return;
++static inline uint32_t  //
++wuffs_private_impl__io_reader__limited_copy_u32_to_slice(
++    const uint8_t** ptr_iop_r,
++    const uint8_t* io2_r,
++    uint32_t length,
++    wuffs_base__slice_u8 dst) {
++  const uint8_t* iop_r = *ptr_iop_r;
++  size_t n = dst.len;
++  if (n > length) {
++    n = length;
+   }
+-  bool up = h->digits[n] >= 5;
+-  if ((h->digits[n] == 5) && ((n + 1) == ((int32_t)(h->num_digits)))) {
+-    up = h->truncated ||  //
+-         ((n > 0) && ((h->digits[n - 1] & 1) != 0));
++  if (n > ((size_t)(io2_r - iop_r))) {
++    n = (size_t)(io2_r - iop_r);
+   }
+-
+-  if (up) {
+-    wuffs_base__private_implementation__high_prec_dec__round_up(h, n);
+-  } else {
+-    wuffs_base__private_implementation__high_prec_dec__round_down(h, n);
++  if (n > 0) {
++    memmove(dst.ptr, iop_r, n);
++    *ptr_iop_r += n;
+   }
++  return (uint32_t)(n);
+ }
+ 
+-static void  //
+-wuffs_base__private_implementation__high_prec_dec__round_just_enough(
+-    wuffs_base__private_implementation__high_prec_dec* h,
+-    int32_t exp2,
+-    uint64_t mantissa) {
+-  // The magic numbers 52 and 53 in this function are because IEEE 754 double
+-  // precision has 52 mantissa bits.
+-  //
+-  // Let f be the floating point number represented by exp2 and mantissa (and
+-  // also the number in h): the number (mantissa * (2 ** (exp2 - 52))).
+-  //
+-  // If f is zero or a small integer, we can return early.
+-  if ((mantissa == 0) ||
+-      ((exp2 < 53) && (h->decimal_point >= ((int32_t)(h->num_digits))))) {
+-    return;
++// wuffs_private_impl__io_reader__match7 returns whether the io_reader's
++// upcoming bytes start with the given prefix (up to 7 bytes long). It is
++// peek-like, not read-like, in that there are no side-effects.
++//
++// The low 3 bits of a hold the prefix length, n.
++//
++// The high 56 bits of a hold the prefix itself, in little-endian order. The
++// first prefix byte is in bits 8..=15, the second prefix byte is in bits
++// 16..=23, etc. The high (8 * (7 - n)) bits are ignored.
++//
++// There are three possible return values:
++//  - 0 means success.
++//  - 1 means inconclusive, equivalent to "$short read".
++//  - 2 means failure.
++static inline uint32_t  //
++wuffs_private_impl__io_reader__match7(const uint8_t* iop_r,
++                                      const uint8_t* io2_r,
++                                      wuffs_base__io_buffer* r,
++                                      uint64_t a) {
++  uint32_t n = a & 7;
++  a >>= 8;
++  if ((io2_r - iop_r) >= 8) {
++    uint64_t x = wuffs_base__peek_u64le__no_bounds_check(iop_r);
++    uint32_t shift = 8 * (8 - n);
++    return ((a << shift) == (x << shift)) ? 0 : 2;
++  }
++  for (; n > 0; n--) {
++    if (iop_r >= io2_r) {
++      return (r && r->meta.closed) ? 2 : 1;
++    } else if (*iop_r != ((uint8_t)(a))) {
++      return 2;
++    }
++    iop_r++;
++    a >>= 8;
+   }
++  return 0;
++}
+ 
+-  // The smallest normal f has an exp2 of -1022 and a mantissa of (1 << 52).
+-  // Subnormal numbers have the same exp2 but a smaller mantissa.
+-  static const int32_t min_incl_normal_exp2 = -1022;
+-  static const uint64_t min_incl_normal_mantissa = 0x0010000000000000ul;
++static inline wuffs_base__io_buffer*  //
++wuffs_private_impl__io_reader__set(wuffs_base__io_buffer* b,
++                                   const uint8_t** ptr_iop_r,
++                                   const uint8_t** ptr_io0_r,
++                                   const uint8_t** ptr_io1_r,
++                                   const uint8_t** ptr_io2_r,
++                                   wuffs_base__slice_u8 data,
++                                   uint64_t history_position) {
++  b->data = data;
++  b->meta.wi = data.len;
++  b->meta.ri = 0;
++  b->meta.pos = history_position;
++  b->meta.closed = false;
+ 
+-  // Compute lower and upper bounds such that any number between them (possibly
+-  // inclusive) will round to f. First, the lower bound. Our number f is:
+-  //   ((mantissa + 0)         * (2 ** (  exp2 - 52)))
+-  //
+-  // The next lowest floating point number is:
+-  //   ((mantissa - 1)         * (2 ** (  exp2 - 52)))
+-  // unless (mantissa - 1) drops the (1 << 52) bit and exp2 is not the
+-  // min_incl_normal_exp2. Either way, call it:
+-  //   ((l_mantissa)           * (2 ** (l_exp2 - 52)))
+-  //
+-  // The lower bound is halfway between them (noting that 52 became 53):
+-  //   (((2 * l_mantissa) + 1) * (2 ** (l_exp2 - 53)))
+-  int32_t l_exp2 = exp2;
+-  uint64_t l_mantissa = mantissa - 1;
+-  if ((exp2 > min_incl_normal_exp2) && (mantissa <= min_incl_normal_mantissa)) {
+-    l_exp2 = exp2 - 1;
+-    l_mantissa = (2 * mantissa) - 1;
+-  }
+-  wuffs_base__private_implementation__high_prec_dec lower;
+-  wuffs_base__private_implementation__high_prec_dec__assign(
+-      &lower, (2 * l_mantissa) + 1, false);
+-  wuffs_base__private_implementation__high_prec_dec__lshift(&lower,
+-                                                            l_exp2 - 53);
++  *ptr_iop_r = data.ptr;
++  *ptr_io0_r = data.ptr;
++  *ptr_io1_r = data.ptr;
++  *ptr_io2_r = data.ptr + data.len;
+ 
+-  // Next, the upper bound. Our number f is:
+-  //   ((mantissa + 0)       * (2 ** (exp2 - 52)))
+-  //
+-  // The next highest floating point number is:
+-  //   ((mantissa + 1)       * (2 ** (exp2 - 52)))
+-  //
+-  // The upper bound is halfway between them (noting that 52 became 53):
+-  //   (((2 * mantissa) + 1) * (2 ** (exp2 - 53)))
+-  wuffs_base__private_implementation__high_prec_dec upper;
+-  wuffs_base__private_implementation__high_prec_dec__assign(
+-      &upper, (2 * mantissa) + 1, false);
+-  wuffs_base__private_implementation__high_prec_dec__lshift(&upper, exp2 - 53);
++  return b;
++}
+ 
+-  // The lower and upper bounds are possible outputs only if the original
+-  // mantissa is even, so that IEEE round-to-even would round to the original
+-  // mantissa and not its neighbors.
+-  bool inclusive = (mantissa & 1) == 0;
++// --------
+ 
+-  // As we walk the digits, we want to know whether rounding up would fall
+-  // within the upper bound. This is tracked by upper_delta:
+-  //  - When -1, the digits of h and upper are the same so far.
+-  //  - When +0, we saw a difference of 1 between h and upper on a previous
+-  //    digit and subsequently only 9s for h and 0s for upper. Thus, rounding
+-  //    up may fall outside of the bound if !inclusive.
+-  //  - When +1, the difference is greater than 1 and we know that rounding up
+-  //    falls within the bound.
+-  //
+-  // This is a state machine with three states. The numerical value for each
+-  // state (-1, +0 or +1) isn't important, other than their order.
+-  int upper_delta = -1;
++static inline uint64_t  //
++wuffs_private_impl__io_writer__copy_from_slice(uint8_t** ptr_iop_w,
++                                               uint8_t* io2_w,
++                                               wuffs_base__slice_u8 src) {
++  uint8_t* iop_w = *ptr_iop_w;
++  size_t n = src.len;
++  if (n > ((size_t)(io2_w - iop_w))) {
++    n = (size_t)(io2_w - iop_w);
++  }
++  if (n > 0) {
++    memmove(iop_w, src.ptr, n);
++    *ptr_iop_w += n;
++  }
++  return (uint64_t)(n);
++}
+ 
+-  // We can now figure out the shortest number of digits required. Walk the
+-  // digits until h has distinguished itself from lower or upper.
+-  //
+-  // The zi and zd variables are indexes and digits, for z in l (lower), h (the
+-  // number) and u (upper).
++static inline void  //
++wuffs_private_impl__io_writer__limit(uint8_t** ptr_io2_w,
++                                     uint8_t* iop_w,
++                                     uint64_t limit) {
++  if (((uint64_t)(*ptr_io2_w - iop_w)) > limit) {
++    *ptr_io2_w = iop_w + limit;
++  }
++}
++
++static inline uint32_t  //
++wuffs_private_impl__io_writer__limited_copy_u32_from_history(
++    uint8_t** ptr_iop_w,
++    uint8_t* io0_w,
++    uint8_t* io2_w,
++    uint32_t length,
++    uint32_t distance) {
++  if (!distance) {
++    return 0;
++  }
++  uint8_t* p = *ptr_iop_w;
++  if ((size_t)(p - io0_w) < (size_t)(distance)) {
++    return 0;
++  }
++  uint8_t* q = p - distance;
++  size_t n = (size_t)(io2_w - p);
++  if ((size_t)(length) > n) {
++    length = (uint32_t)(n);
++  } else {
++    n = (size_t)(length);
++  }
++  // TODO: unrolling by 3 seems best for the std/deflate benchmarks, but that
++  // is mostly because 3 is the minimum length for the deflate format. This
++  // function implementation shouldn't overfit to that one format. Perhaps the
++  // limited_copy_u32_from_history Wuffs method should also take an unroll hint
++  // argument, and the cgen can look if that argument is the constant
++  // expression '3'.
+   //
+-  // The lower, h and upper numbers may have their decimal points at different
+-  // places. In this case, upper is the longest, so we iterate ui starting from
+-  // 0 and iterate li and hi starting from either 0 or -1.
+-  int32_t ui = 0;
+-  for (;; ui++) {
+-    // Calculate hd, the middle number's digit.
+-    int32_t hi = ui - upper.decimal_point + h->decimal_point;
+-    if (hi >= ((int32_t)(h->num_digits))) {
+-      break;
+-    }
+-    uint8_t hd = (((uint32_t)hi) < h->num_digits) ? h->digits[hi] : 0;
++  // See also wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast
++  // below.
++  for (; n >= 3; n -= 3) {
++    *p++ = *q++;
++    *p++ = *q++;
++    *p++ = *q++;
++  }
++  for (; n; n--) {
++    *p++ = *q++;
++  }
++  *ptr_iop_w = p;
++  return length;
++}
+ 
+-    // Calculate ld, the lower bound's digit.
+-    int32_t li = ui - upper.decimal_point + lower.decimal_point;
+-    uint8_t ld = (((uint32_t)li) < lower.num_digits) ? lower.digits[li] : 0;
++// wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast is like
++// the wuffs_private_impl__io_writer__limited_copy_u32_from_history function
++// above, but has stronger pre-conditions.
++//
++// The caller needs to prove that:
++//  - length   >= 1
++//  - length   <= (io2_w      - *ptr_iop_w)
++//  - distance >= 1
++//  - distance <= (*ptr_iop_w - io0_w)
++static inline uint32_t  //
++wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast(
++    uint8_t** ptr_iop_w,
++    uint8_t* io0_w,
++    uint8_t* io2_w,
++    uint32_t length,
++    uint32_t distance) {
++  uint8_t* p = *ptr_iop_w;
++  uint8_t* q = p - distance;
++  uint32_t n = length;
++  for (; n >= 3; n -= 3) {
++    *p++ = *q++;
++    *p++ = *q++;
++    *p++ = *q++;
++  }
++  for (; n; n--) {
++    *p++ = *q++;
++  }
++  *ptr_iop_w = p;
++  return length;
++}
+ 
+-    // We can round down (truncate) if lower has a different digit than h or if
+-    // lower is inclusive and is exactly the result of rounding down (i.e. we
+-    // have reached the final digit of lower).
+-    bool can_round_down =
+-        (ld != hd) ||  //
+-        (inclusive && ((li + 1) == ((int32_t)(lower.num_digits))));
++// wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast_return_cusp
++// is like the
++// wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast function,
++// but also returns the cusp: a byte pair (as a u16le) being the last byte of
++// and next byte after the copied history.
++//
++// For example, if history was [10, 11, 12, 13, 14, 15, 16, 17, 18] then:
++//  - copying l=3, d=8 produces [11, 12, 13] and the cusp is (13, 14).
++//  - copying l=3, d=2 produces [17, 18, 17] and the cusp is (17, 18).
++//
++// The caller needs to prove that:
++//  - length   >= 1
++//  - length   <= (io2_w      - *ptr_iop_w)
++//  - distance >= 1
++//  - distance <= (*ptr_iop_w - io0_w)
++static inline uint32_t  //
++wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast_return_cusp(
++    uint8_t** ptr_iop_w,
++    uint8_t* io0_w,
++    uint8_t* io2_w,
++    uint32_t length,
++    uint32_t distance) {
++  uint8_t* p = *ptr_iop_w;
++  uint8_t* q = p - distance;
++  uint32_t n = length;
++  for (; n >= 3; n -= 3) {
++    *p++ = *q++;
++    *p++ = *q++;
++    *p++ = *q++;
++  }
++  for (; n; n--) {
++    *p++ = *q++;
++  }
++  *ptr_iop_w = p;
++  return (uint32_t)wuffs_base__peek_u16le__no_bounds_check(q - 1);
++}
+ 
+-    // Calculate ud, the upper bound's digit, and update upper_delta.
+-    uint8_t ud = (((uint32_t)ui) < upper.num_digits) ? upper.digits[ui] : 0;
+-    if (upper_delta < 0) {
+-      if ((hd + 1) < ud) {
+-        // For example:
+-        // h     = 12345???
+-        // upper = 12347???
+-        upper_delta = +1;
+-      } else if (hd != ud) {
+-        // For example:
+-        // h     = 12345???
+-        // upper = 12346???
+-        upper_delta = +0;
+-      }
+-    } else if (upper_delta == 0) {
+-      if ((hd != 9) || (ud != 0)) {
+-        // For example:
+-        // h     = 1234598?
+-        // upper = 1234600?
+-        upper_delta = +1;
+-      }
++// wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast
++// copies the previous byte (the one immediately before *ptr_iop_w), copying 8
++// byte chunks at a time. Each chunk contains 8 repetitions of the same byte.
++//
++// In terms of number of bytes copied, length is rounded up to a multiple of 8.
++// As a special case, a zero length rounds up to 8 (even though 0 is already a
++// multiple of 8), since there is always at least one 8 byte chunk copied.
++//
++// In terms of advancing *ptr_iop_w, length is not rounded up.
++//
++// The caller needs to prove that:
++//  - length       >= 1
++//  - (length + 8) <= (io2_w      - *ptr_iop_w)
++//  - distance     == 1
++//  - distance     <= (*ptr_iop_w - io0_w)
++static inline uint32_t  //
++wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast(
++    uint8_t** ptr_iop_w,
++    uint8_t* io0_w,
++    uint8_t* io2_w,
++    uint32_t length,
++    uint32_t distance) {
++  uint8_t* p = *ptr_iop_w;
++  uint64_t x = p[-1];
++  x |= x << 8;
++  x |= x << 16;
++  x |= x << 32;
++  uint32_t n = length;
++  while (1) {
++    wuffs_base__poke_u64le__no_bounds_check(p, x);
++    if (n <= 8) {
++      p += n;
++      break;
+     }
++    p += 8;
++    n -= 8;
++  }
++  *ptr_iop_w = p;
++  return length;
++}
+ 
+-    // We can round up if upper has a different digit than h and either upper
+-    // is inclusive or upper is bigger than the result of rounding up.
+-    bool can_round_up =
+-        (upper_delta > 0) ||    //
+-        ((upper_delta == 0) &&  //
+-         (inclusive || ((ui + 1) < ((int32_t)(upper.num_digits)))));
+-
+-    // If we can round either way, round to nearest. If we can round only one
+-    // way, do it. If we can't round, continue the loop.
+-    if (can_round_down) {
+-      if (can_round_up) {
+-        wuffs_base__private_implementation__high_prec_dec__round_nearest(
+-            h, hi + 1);
+-        return;
+-      } else {
+-        wuffs_base__private_implementation__high_prec_dec__round_down(h,
+-                                                                      hi + 1);
+-        return;
+-      }
+-    } else {
+-      if (can_round_up) {
+-        wuffs_base__private_implementation__high_prec_dec__round_up(h, hi + 1);
+-        return;
+-      }
++// wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast_return_cusp
++// copies the previous byte (the one immediately before *ptr_iop_w), copying 8
++// byte chunks at a time. Each chunk contains 8 repetitions of the same byte.
++// It also returns the cusp: a byte pair (as a u16le) being the last byte of
++// and next byte after the copied history.
++//
++// In terms of number of bytes copied, length is rounded up to a multiple of 8.
++// As a special case, a zero length rounds up to 8 (even though 0 is already a
++// multiple of 8), since there is always at least one 8 byte chunk copied.
++//
++// In terms of advancing *ptr_iop_w, length is not rounded up.
++//
++// The caller needs to prove that:
++//  - length       >= 1
++//  - (length + 8) <= (io2_w      - *ptr_iop_w)
++//  - distance     == 1
++//  - distance     <= (*ptr_iop_w - io0_w)
++static inline uint32_t  //
++wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast_return_cusp(
++    uint8_t** ptr_iop_w,
++    uint8_t* io0_w,
++    uint8_t* io2_w,
++    uint32_t length,
++    uint32_t distance) {
++  uint8_t* p = *ptr_iop_w;
++  uint8_t* q = p - distance;
++  uint64_t x = p[-1];
++  x |= x << 8;
++  x |= x << 16;
++  x |= x << 32;
++  uint32_t n = length;
++  while (1) {
++    wuffs_base__poke_u64le__no_bounds_check(p, x);
++    if (n <= 8) {
++      p += n;
++      q += n;
++      break;
+     }
++    p += 8;
++    q += 8;
++    n -= 8;
+   }
++  *ptr_iop_w = p;
++  return (uint32_t)wuffs_base__peek_u16le__no_bounds_check(q - 1);
+ }
+ 
+-// --------
+-
+-// wuffs_base__private_implementation__parse_number_f64_eisel_lemire produces
+-// the IEEE 754 double-precision value for an exact mantissa and base-10
+-// exponent. For example:
+-//  - when parsing "12345.678e+02", man is 12345678 and exp10 is -1.
+-//  - when parsing "-12", man is 12 and exp10 is 0. Processing the leading
+-//    minus sign is the responsibility of the caller, not this function.
++// wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast
++// is like the
++// wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast function
++// above, but copies 8 byte chunks at a time.
+ //
+-// On success, it returns a non-negative int64_t such that the low 63 bits hold
+-// the 11-bit exponent and 52-bit mantissa.
++// In terms of number of bytes copied, length is rounded up to a multiple of 8.
++// As a special case, a zero length rounds up to 8 (even though 0 is already a
++// multiple of 8), since there is always at least one 8 byte chunk copied.
+ //
+-// On failure, it returns a negative value.
++// In terms of advancing *ptr_iop_w, length is not rounded up.
+ //
+-// The algorithm is based on an original idea by Michael Eisel that was refined
+-// by Daniel Lemire. See
+-// https://lemire.me/blog/2020/03/10/fast-float-parsing-in-practice/
+-// and
+-// https://nigeltao.github.io/blog/2020/eisel-lemire.html
++// The caller needs to prove that:
++//  - length       >= 1
++//  - (length + 8) <= (io2_w      - *ptr_iop_w)
++//  - distance     >= 8
++//  - distance     <= (*ptr_iop_w - io0_w)
++static inline uint32_t  //
++wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast(
++    uint8_t** ptr_iop_w,
++    uint8_t* io0_w,
++    uint8_t* io2_w,
++    uint32_t length,
++    uint32_t distance) {
++  uint8_t* p = *ptr_iop_w;
++  uint8_t* q = p - distance;
++  uint32_t n = length;
++  while (1) {
++    memcpy(p, q, 8);
++    if (n <= 8) {
++      p += n;
++      break;
++    }
++    p += 8;
++    q += 8;
++    n -= 8;
++  }
++  *ptr_iop_w = p;
++  return length;
++}
++
++// wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast_return_cusp
++// is like the
++// wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast function
++// above, but copies 8 byte chunks at a time. It also returns the cusp: a byte
++// pair (as a u16le) being the last byte of and next byte after the copied
++// history.
+ //
+-// Preconditions:
+-//  - man is non-zero.
+-//  - exp10 is in the range [-307 ..= 288], the same range of the
+-//    wuffs_base__private_implementation__powers_of_10 array.
++// In terms of number of bytes copied, length is rounded up to a multiple of 8.
++// As a special case, a zero length rounds up to 8 (even though 0 is already a
++// multiple of 8), since there is always at least one 8 byte chunk copied.
+ //
+-// The exp10 range (and the fact that man is in the range [1 ..= UINT64_MAX],
+-// approximately [1 ..= 1.85e+19]) means that (man * (10 ** exp10)) is in the
+-// range [1e-307 ..= 1.85e+307]. This is entirely within the range of normal
+-// (neither subnormal nor non-finite) f64 values: DBL_MIN and DBL_MAX are
+-// approximately 2.23e–308 and 1.80e+308.
+-static int64_t  //
+-wuffs_base__private_implementation__parse_number_f64_eisel_lemire(
+-    uint64_t man,
+-    int32_t exp10) {
+-  // Look up the (possibly truncated) base-2 representation of (10 ** exp10).
+-  // The look-up table was constructed so that it is already normalized: the
+-  // table entry's mantissa's MSB (most significant bit) is on.
+-  const uint64_t* po10 =
+-      &wuffs_base__private_implementation__powers_of_10[exp10 + 307][0];
++// In terms of advancing *ptr_iop_w, length is not rounded up.
++//
++// The caller needs to prove that:
++//  - length       >= 1
++//  - (length + 8) <= (io2_w      - *ptr_iop_w)
++//  - distance     >= 8
++//  - distance     <= (*ptr_iop_w - io0_w)
++static inline uint32_t  //
++wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast_return_cusp(
++    uint8_t** ptr_iop_w,
++    uint8_t* io0_w,
++    uint8_t* io2_w,
++    uint32_t length,
++    uint32_t distance) {
++  uint8_t* p = *ptr_iop_w;
++  uint8_t* q = p - distance;
++  uint32_t n = length;
++  while (1) {
++    memcpy(p, q, 8);
++    if (n <= 8) {
++      p += n;
++      q += n;
++      break;
++    }
++    p += 8;
++    q += 8;
++    n -= 8;
++  }
++  *ptr_iop_w = p;
++  return (uint32_t)wuffs_base__peek_u16le__no_bounds_check(q - 1);
++}
+ 
+-  // Normalize the man argument. The (man != 0) precondition means that a
+-  // non-zero bit exists.
+-  uint32_t clz = wuffs_base__count_leading_zeroes_u64(man);
+-  man <<= clz;
++static inline uint32_t  //
++wuffs_private_impl__io_writer__limited_copy_u32_from_reader(
++    uint8_t** ptr_iop_w,
++    uint8_t* io2_w,
++    uint32_t length,
++    const uint8_t** ptr_iop_r,
++    const uint8_t* io2_r) {
++  uint8_t* iop_w = *ptr_iop_w;
++  size_t n = length;
++  if (n > ((size_t)(io2_w - iop_w))) {
++    n = (size_t)(io2_w - iop_w);
++  }
++  const uint8_t* iop_r = *ptr_iop_r;
++  if (n > ((size_t)(io2_r - iop_r))) {
++    n = (size_t)(io2_r - iop_r);
++  }
++  if (n > 0) {
++    memmove(iop_w, iop_r, n);
++    *ptr_iop_w += n;
++    *ptr_iop_r += n;
++  }
++  return (uint32_t)(n);
++}
+ 
+-  // Calculate the return value's base-2 exponent. We might tweak it by ±1
+-  // later, but its initial value comes from a linear scaling of exp10,
+-  // converting from power-of-10 to power-of-2, and adjusting by clz.
+-  //
+-  // The magic constants are:
+-  //  - 1087 = 1023 + 64. The 1023 is the f64 exponent bias. The 64 is because
+-  //    the look-up table uses 64-bit mantissas.
+-  //  - 217706 is such that the ratio 217706 / 65536 ≈ 3.321930 is close enough
+-  //    (over the practical range of exp10) to log(10) / log(2) ≈ 3.321928.
+-  //  - 65536 = 1<<16 is arbitrary but a power of 2, so division is a shift.
+-  //
+-  // Equality of the linearly-scaled value and the actual power-of-2, over the
+-  // range of exp10 arguments that this function accepts, is confirmed by
+-  // script/print-mpb-powers-of-10.go
+-  uint64_t ret_exp2 =
+-      ((uint64_t)(((217706 * exp10) >> 16) + 1087)) - ((uint64_t)clz);
++static inline uint32_t  //
++wuffs_private_impl__io_writer__limited_copy_u32_from_slice(
++    uint8_t** ptr_iop_w,
++    uint8_t* io2_w,
++    uint32_t length,
++    wuffs_base__slice_u8 src) {
++  uint8_t* iop_w = *ptr_iop_w;
++  size_t n = src.len;
++  if (n > length) {
++    n = length;
++  }
++  if (n > ((size_t)(io2_w - iop_w))) {
++    n = (size_t)(io2_w - iop_w);
++  }
++  if (n > 0) {
++    memmove(iop_w, src.ptr, n);
++    *ptr_iop_w += n;
++  }
++  return (uint32_t)(n);
++}
+ 
+-  // Multiply the two mantissas. Normalization means that both mantissas are at
+-  // least (1<<63), so the 128-bit product must be at least (1<<126). The high
+-  // 64 bits of the product, x_hi, must therefore be at least (1<<62).
+-  //
+-  // As a consequence, x_hi has either 0 or 1 leading zeroes. Shifting x_hi
+-  // right by either 9 or 10 bits (depending on x_hi's MSB) will therefore
+-  // leave the top 10 MSBs (bits 54 ..= 63) off and the 11th MSB (bit 53) on.
+-  wuffs_base__multiply_u64__output x = wuffs_base__multiply_u64(man, po10[1]);
+-  uint64_t x_hi = x.hi;
+-  uint64_t x_lo = x.lo;
++static inline wuffs_base__io_buffer*  //
++wuffs_private_impl__io_writer__set(wuffs_base__io_buffer* b,
++                                   uint8_t** ptr_iop_w,
++                                   uint8_t** ptr_io0_w,
++                                   uint8_t** ptr_io1_w,
++                                   uint8_t** ptr_io2_w,
++                                   wuffs_base__slice_u8 data,
++                                   uint64_t history_position) {
++  b->data = data;
++  b->meta.wi = 0;
++  b->meta.ri = 0;
++  b->meta.pos = history_position;
++  b->meta.closed = false;
+ 
+-  // Before we shift right by at least 9 bits, recall that the look-up table
+-  // entry was possibly truncated. We have so far only calculated a lower bound
+-  // for the product (man * e), where e is (10 ** exp10). The upper bound would
+-  // add a further (man * 1) to the 128-bit product, which overflows the lower
+-  // 64-bit limb if ((x_lo + man) < man).
+-  //
+-  // If overflow occurs, that adds 1 to x_hi. Since we're about to shift right
+-  // by at least 9 bits, that carried 1 can be ignored unless the higher 64-bit
+-  // limb's low 9 bits are all on.
+-  //
+-  // For example, parsing "9999999999999999999" will take the if-true branch
+-  // here, since:
+-  //  - x_hi = 0x4563918244F3FFFF
+-  //  - x_lo = 0x8000000000000000
+-  //  - man  = 0x8AC7230489E7FFFF
+-  if (((x_hi & 0x1FF) == 0x1FF) && ((x_lo + man) < man)) {
+-    // Refine our calculation of (man * e). Before, our approximation of e used
+-    // a "low resolution" 64-bit mantissa. Now use a "high resolution" 128-bit
+-    // mantissa. We've already calculated x = (man * bits_0_to_63_incl_of_e).
+-    // Now calculate y = (man * bits_64_to_127_incl_of_e).
+-    wuffs_base__multiply_u64__output y = wuffs_base__multiply_u64(man, po10[0]);
+-    uint64_t y_hi = y.hi;
+-    uint64_t y_lo = y.lo;
++  *ptr_iop_w = data.ptr;
++  *ptr_io0_w = data.ptr;
++  *ptr_io1_w = data.ptr;
++  *ptr_io2_w = data.ptr + data.len;
+ 
+-    // Merge the 128-bit x and 128-bit y, which overlap by 64 bits, to
+-    // calculate the 192-bit product of the 64-bit man by the 128-bit e.
+-    // As we exit this if-block, we only care about the high 128 bits
+-    // (merged_hi and merged_lo) of that 192-bit product.
+-    //
+-    // For example, parsing "1.234e-45" will take the if-true branch here,
+-    // since:
+-    //  - x_hi = 0x70B7E3696DB29FFF
+-    //  - x_lo = 0xE040000000000000
+-    //  - y_hi = 0x33718BBEAB0E0D7A
+-    //  - y_lo = 0xA880000000000000
+-    uint64_t merged_hi = x_hi;
+-    uint64_t merged_lo = x_lo + y_hi;
+-    if (merged_lo < x_lo) {
+-      merged_hi++;  // Carry the overflow bit.
+-    }
++  return b;
++}
+ 
+-    // The "high resolution" approximation of e is still a lower bound. Once
+-    // again, see if the upper bound is large enough to produce a different
+-    // result. This time, if it does, give up instead of reaching for an even
+-    // more precise approximation to e.
+-    //
+-    // This three-part check is similar to the two-part check that guarded the
+-    // if block that we're now in, but it has an extra term for the middle 64
+-    // bits (checking that adding 1 to merged_lo would overflow).
+-    //
+-    // For example, parsing "5.9604644775390625e-8" will take the if-true
+-    // branch here, since:
+-    //  - merged_hi = 0x7FFFFFFFFFFFFFFF
+-    //  - merged_lo = 0xFFFFFFFFFFFFFFFF
+-    //  - y_lo      = 0x4DB3FFC120988200
+-    //  - man       = 0xD3C21BCECCEDA100
+-    if (((merged_hi & 0x1FF) == 0x1FF) && ((merged_lo + 1) == 0) &&
+-        (y_lo + man < man)) {
+-      return -1;
+-    }
++// ---------------- I/O (Utility)
+ 
+-    // Replace the 128-bit x with merged.
+-    x_hi = merged_hi;
+-    x_lo = merged_lo;
+-  }
++#define wuffs_base__utility__empty_io_reader wuffs_base__empty_io_reader
++#define wuffs_base__utility__empty_io_writer wuffs_base__empty_io_writer
+ 
+-  // As mentioned above, shifting x_hi right by either 9 or 10 bits will leave
+-  // the top 10 MSBs (bits 54 ..= 63) off and the 11th MSB (bit 53) on. If the
+-  // MSB (before shifting) was on, adjust ret_exp2 for the larger shift.
+-  //
+-  // Having bit 53 on (and higher bits off) means that ret_mantissa is a 54-bit
+-  // number.
+-  uint64_t msb = x_hi >> 63;
+-  uint64_t ret_mantissa = x_hi >> (msb + 9);
+-  ret_exp2 -= 1 ^ msb;
++// ---------------- Tokens
+ 
+-  // IEEE 754 rounds to-nearest with ties rounded to-even. Rounding to-even can
+-  // be tricky. If we're half-way between two exactly representable numbers
+-  // (x's low 73 bits are zero and the next 2 bits that matter are "01"), give
+-  // up instead of trying to pick the winner.
+-  //
+-  // Technically, we could tighten the condition by changing "73" to "73 or 74,
+-  // depending on msb", but a flat "73" is simpler.
+-  //
+-  // For example, parsing "1e+23" will take the if-true branch here, since:
+-  //  - x_hi          = 0x54B40B1F852BDA00
+-  //  - ret_mantissa  = 0x002A5A058FC295ED
+-  if ((x_lo == 0) && ((x_hi & 0x1FF) == 0) && ((ret_mantissa & 3) == 1)) {
+-    return -1;
+-  }
++// ---------------- Tokens (Utility)
+ 
+-  // If we're not halfway then it's rounding to-nearest. Starting with a 54-bit
+-  // number, carry the lowest bit (bit 0) up if it's on. Regardless of whether
+-  // it was on or off, shifting right by one then produces a 53-bit number. If
+-  // carrying up overflowed, shift again.
+-  ret_mantissa += ret_mantissa & 1;
+-  ret_mantissa >>= 1;
+-  // This if block is equivalent to (but benchmarks slightly faster than) the
+-  // following branchless form:
+-  //    uint64_t overflow_adjustment = ret_mantissa >> 53;
+-  //    ret_mantissa >>= overflow_adjustment;
+-  //    ret_exp2 += overflow_adjustment;
+-  //
+-  // For example, parsing "7.2057594037927933e+16" will take the if-true
+-  // branch here, since:
+-  //  - x_hi          = 0x7FFFFFFFFFFFFE80
+-  //  - ret_mantissa  = 0x0020000000000000
+-  if ((ret_mantissa >> 53) > 0) {
+-    ret_mantissa >>= 1;
+-    ret_exp2++;
+-  }
++// ---------------- Memory Allocation
+ 
+-  // Starting with a 53-bit number, IEEE 754 double-precision normal numbers
+-  // have an implicit mantissa bit. Mask that away and keep the low 52 bits.
+-  ret_mantissa &= 0x000FFFFFFFFFFFFF;
++// ---------------- Images
+ 
+-  // Pack the bits and return.
+-  return ((int64_t)(ret_mantissa | (ret_exp2 << 52)));
+-}
++WUFFS_BASE__MAYBE_STATIC uint64_t  //
++wuffs_base__pixel_swizzler__limited_swizzle_u32_interleaved_from_reader(
++    const wuffs_base__pixel_swizzler* p,
++    uint32_t up_to_num_pixels,
++    wuffs_base__slice_u8 dst,
++    wuffs_base__slice_u8 dst_palette,
++    const uint8_t** ptr_iop_r,
++    const uint8_t* io2_r);
+ 
+-// --------
++WUFFS_BASE__MAYBE_STATIC uint64_t  //
++wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
++    const wuffs_base__pixel_swizzler* p,
++    wuffs_base__slice_u8 dst,
++    wuffs_base__slice_u8 dst_palette,
++    const uint8_t** ptr_iop_r,
++    const uint8_t* io2_r);
+ 
+-static wuffs_base__result_f64  //
+-wuffs_base__private_implementation__parse_number_f64_special(
+-    wuffs_base__slice_u8 s,
+-    uint32_t options) {
+-  do {
+-    if (options & WUFFS_BASE__PARSE_NUMBER_FXX__REJECT_INF_AND_NAN) {
+-      goto fail;
+-    }
++WUFFS_BASE__MAYBE_STATIC uint64_t  //
++wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(
++    const wuffs_base__pixel_swizzler* p,
++    wuffs_base__slice_u8 dst,
++    wuffs_base__slice_u8 dst_palette,
++    uint64_t num_pixels);
+ 
+-    uint8_t* p = s.ptr;
+-    uint8_t* q = s.ptr + s.len;
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status  //
++wuffs_base__pixel_swizzler__swizzle_ycck(
++    const wuffs_base__pixel_swizzler* p,
++    wuffs_base__pixel_buffer* dst,
++    wuffs_base__slice_u8 dst_palette,
++    uint32_t x_min_incl,
++    uint32_t x_max_excl,
++    uint32_t y_min_incl,
++    uint32_t y_max_excl,
++    wuffs_base__slice_u8 src0,
++    wuffs_base__slice_u8 src1,
++    wuffs_base__slice_u8 src2,
++    wuffs_base__slice_u8 src3,
++    uint32_t width0,
++    uint32_t width1,
++    uint32_t width2,
++    uint32_t width3,
++    uint32_t height0,
++    uint32_t height1,
++    uint32_t height2,
++    uint32_t height3,
++    uint32_t stride0,
++    uint32_t stride1,
++    uint32_t stride2,
++    uint32_t stride3,
++    uint8_t h0,
++    uint8_t h1,
++    uint8_t h2,
++    uint8_t h3,
++    uint8_t v0,
++    uint8_t v1,
++    uint8_t v2,
++    uint8_t v3,
++    bool is_rgb_or_cmyk,
++    bool triangle_filter_for_2to1,
++    wuffs_base__slice_u8 scratch_buffer_2k);
+ 
+-    for (; (p < q) && (*p == '_'); p++) {
+-    }
+-    if (p >= q) {
+-      goto fail;
+-    }
++// ---------------- Images (Utility)
+ 
+-    // Parse sign.
+-    bool negative = false;
+-    do {
+-      if (*p == '+') {
+-        p++;
+-      } else if (*p == '-') {
+-        negative = true;
+-        p++;
+-      } else {
+-        break;
+-      }
+-      for (; (p < q) && (*p == '_'); p++) {
+-      }
+-    } while (0);
+-    if (p >= q) {
+-      goto fail;
+-    }
++#define wuffs_base__utility__make_pixel_format wuffs_base__make_pixel_format
+ 
+-    bool nan = false;
+-    switch (p[0]) {
+-      case 'I':
+-      case 'i':
+-        if (((q - p) < 3) ||                     //
+-            ((p[1] != 'N') && (p[1] != 'n')) ||  //
+-            ((p[2] != 'F') && (p[2] != 'f'))) {
+-          goto fail;
+-        }
+-        p += 3;
++// ---------------- String Conversions
+ 
+-        if ((p >= q) || (*p == '_')) {
+-          break;
+-        } else if (((q - p) < 5) ||                     //
+-                   ((p[0] != 'I') && (p[0] != 'i')) ||  //
+-                   ((p[1] != 'N') && (p[1] != 'n')) ||  //
+-                   ((p[2] != 'I') && (p[2] != 'i')) ||  //
+-                   ((p[3] != 'T') && (p[3] != 't')) ||  //
+-                   ((p[4] != 'Y') && (p[4] != 'y'))) {
+-          goto fail;
+-        }
+-        p += 5;
++// ---------------- Unicode and UTF-8
+ 
+-        if ((p >= q) || (*p == '_')) {
+-          break;
+-        }
+-        goto fail;
++// ----------------
+ 
+-      case 'N':
+-      case 'n':
+-        if (((q - p) < 3) ||                     //
+-            ((p[1] != 'A') && (p[1] != 'a')) ||  //
+-            ((p[2] != 'N') && (p[2] != 'n'))) {
+-          goto fail;
+-        }
+-        p += 3;
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
++    defined(WUFFS_CONFIG__MODULE__BASE__CORE)
+ 
+-        if ((p >= q) || (*p == '_')) {
+-          nan = true;
+-          break;
+-        }
+-        goto fail;
++const uint8_t wuffs_private_impl__low_bits_mask__u8[8] = {
++    0x00, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F,
++};
+ 
+-      default:
+-        goto fail;
+-    }
++const uint16_t wuffs_private_impl__low_bits_mask__u16[16] = {
++    0x0000, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F, 0x003F, 0x007F,
++    0x00FF, 0x01FF, 0x03FF, 0x07FF, 0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF,
++};
+ 
+-    // Finish.
+-    for (; (p < q) && (*p == '_'); p++) {
+-    }
+-    if (p != q) {
+-      goto fail;
+-    }
+-    wuffs_base__result_f64 ret;
+-    ret.status.repr = NULL;
+-    ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(
+-        (nan ? 0x7FFFFFFFFFFFFFFF : 0x7FF0000000000000) |
+-        (negative ? 0x8000000000000000 : 0));
+-    return ret;
+-  } while (0);
++const uint32_t wuffs_private_impl__low_bits_mask__u32[32] = {
++    0x00000000, 0x00000001, 0x00000003, 0x00000007, 0x0000000F, 0x0000001F,
++    0x0000003F, 0x0000007F, 0x000000FF, 0x000001FF, 0x000003FF, 0x000007FF,
++    0x00000FFF, 0x00001FFF, 0x00003FFF, 0x00007FFF, 0x0000FFFF, 0x0001FFFF,
++    0x0003FFFF, 0x0007FFFF, 0x000FFFFF, 0x001FFFFF, 0x003FFFFF, 0x007FFFFF,
++    0x00FFFFFF, 0x01FFFFFF, 0x03FFFFFF, 0x07FFFFFF, 0x0FFFFFFF, 0x1FFFFFFF,
++    0x3FFFFFFF, 0x7FFFFFFF,
++};
+ 
+-fail:
+-  do {
+-    wuffs_base__result_f64 ret;
+-    ret.status.repr = wuffs_base__error__bad_argument;
+-    ret.value = 0;
+-    return ret;
+-  } while (0);
+-}
++const uint64_t wuffs_private_impl__low_bits_mask__u64[64] = {
++    0x0000000000000000, 0x0000000000000001, 0x0000000000000003,
++    0x0000000000000007, 0x000000000000000F, 0x000000000000001F,
++    0x000000000000003F, 0x000000000000007F, 0x00000000000000FF,
++    0x00000000000001FF, 0x00000000000003FF, 0x00000000000007FF,
++    0x0000000000000FFF, 0x0000000000001FFF, 0x0000000000003FFF,
++    0x0000000000007FFF, 0x000000000000FFFF, 0x000000000001FFFF,
++    0x000000000003FFFF, 0x000000000007FFFF, 0x00000000000FFFFF,
++    0x00000000001FFFFF, 0x00000000003FFFFF, 0x00000000007FFFFF,
++    0x0000000000FFFFFF, 0x0000000001FFFFFF, 0x0000000003FFFFFF,
++    0x0000000007FFFFFF, 0x000000000FFFFFFF, 0x000000001FFFFFFF,
++    0x000000003FFFFFFF, 0x000000007FFFFFFF, 0x00000000FFFFFFFF,
++    0x00000001FFFFFFFF, 0x00000003FFFFFFFF, 0x00000007FFFFFFFF,
++    0x0000000FFFFFFFFF, 0x0000001FFFFFFFFF, 0x0000003FFFFFFFFF,
++    0x0000007FFFFFFFFF, 0x000000FFFFFFFFFF, 0x000001FFFFFFFFFF,
++    0x000003FFFFFFFFFF, 0x000007FFFFFFFFFF, 0x00000FFFFFFFFFFF,
++    0x00001FFFFFFFFFFF, 0x00003FFFFFFFFFFF, 0x00007FFFFFFFFFFF,
++    0x0000FFFFFFFFFFFF, 0x0001FFFFFFFFFFFF, 0x0003FFFFFFFFFFFF,
++    0x0007FFFFFFFFFFFF, 0x000FFFFFFFFFFFFF, 0x001FFFFFFFFFFFFF,
++    0x003FFFFFFFFFFFFF, 0x007FFFFFFFFFFFFF, 0x00FFFFFFFFFFFFFF,
++    0x01FFFFFFFFFFFFFF, 0x03FFFFFFFFFFFFFF, 0x07FFFFFFFFFFFFFF,
++    0x0FFFFFFFFFFFFFFF, 0x1FFFFFFFFFFFFFFF, 0x3FFFFFFFFFFFFFFF,
++    0x7FFFFFFFFFFFFFFF,
++};
+ 
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__result_f64  //
+-wuffs_base__private_implementation__high_prec_dec__to_f64(
+-    wuffs_base__private_implementation__high_prec_dec* h,
+-    uint32_t options) {
+-  do {
+-    // powers converts decimal powers of 10 to binary powers of 2. For example,
+-    // (10000 >> 13) is 1. It stops before the elements exceed 60, also known
+-    // as WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL.
+-    //
+-    // This rounds down (1<<13 is a lower bound for 1e4). Adding 1 to the array
+-    // element value rounds up (1<<14 is an upper bound for 1e4) while staying
+-    // at or below WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL.
+-    //
+-    // When starting in the range [1e+1 .. 1e+2] (i.e. h->decimal_point == +2),
+-    // powers[2] == 6 and so:
+-    //  - Right shifting by 6+0 produces the range [10/64 .. 100/64] =
+-    //    [0.156250 .. 1.56250]. The resultant h->decimal_point is +0 or +1.
+-    //  - Right shifting by 6+1 produces the range [10/128 .. 100/128] =
+-    //    [0.078125 .. 0.78125]. The resultant h->decimal_point is -1 or -0.
+-    //
+-    // When starting in the range [1e-3 .. 1e-2] (i.e. h->decimal_point == -2),
+-    // powers[2] == 6 and so:
+-    //  - Left shifting by 6+0 produces the range [0.001*64 .. 0.01*64] =
+-    //    [0.064 .. 0.64]. The resultant h->decimal_point is -1 or -0.
+-    //  - Left shifting by 6+1 produces the range [0.001*128 .. 0.01*128] =
+-    //    [0.128 .. 1.28]. The resultant h->decimal_point is +0 or +1.
+-    //
+-    // Thus, when targeting h->decimal_point being +0 or +1, use (powers[n]+0)
+-    // when right shifting but (powers[n]+1) when left shifting.
+-    static const uint32_t num_powers = 19;
+-    static const uint8_t powers[19] = {
+-        0,  3,  6,  9,  13, 16, 19, 23, 26, 29,  //
+-        33, 36, 39, 43, 46, 49, 53, 56, 59,      //
+-    };
++const uint32_t wuffs_private_impl__pixel_format__bits_per_channel[16] = {
++    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
++    0x08, 0x0A, 0x0C, 0x10, 0x18, 0x20, 0x30, 0x40,
++};
+ 
+-    // Handle zero and obvious extremes. The largest and smallest positive
+-    // finite f64 values are approximately 1.8e+308 and 4.9e-324.
+-    if ((h->num_digits == 0) || (h->decimal_point < -326)) {
+-      goto zero;
+-    } else if (h->decimal_point > 310) {
+-      goto infinity;
+-    }
++const char wuffs_base__note__i_o_redirect[] = "@base: I/O redirect";
++const char wuffs_base__note__end_of_data[] = "@base: end of data";
++const char wuffs_base__note__metadata_reported[] = "@base: metadata reported";
++const char wuffs_base__suspension__even_more_information[] = "$base: even more information";
++const char wuffs_base__suspension__mispositioned_read[] = "$base: mispositioned read";
++const char wuffs_base__suspension__mispositioned_write[] = "$base: mispositioned write";
++const char wuffs_base__suspension__short_read[] = "$base: short read";
++const char wuffs_base__suspension__short_workbuf[] = "$base: short workbuf";
++const char wuffs_base__suspension__short_write[] = "$base: short write";
++const char wuffs_base__error__bad_i_o_position[] = "#base: bad I/O position";
++const char wuffs_base__error__bad_argument_length_too_short[] = "#base: bad argument (length too short)";
++const char wuffs_base__error__bad_argument[] = "#base: bad argument";
++const char wuffs_base__error__bad_call_sequence[] = "#base: bad call sequence";
++const char wuffs_base__error__bad_data[] = "#base: bad data";
++const char wuffs_base__error__bad_receiver[] = "#base: bad receiver";
++const char wuffs_base__error__bad_restart[] = "#base: bad restart";
++const char wuffs_base__error__bad_sizeof_receiver[] = "#base: bad sizeof receiver";
++const char wuffs_base__error__bad_vtable[] = "#base: bad vtable";
++const char wuffs_base__error__bad_workbuf_length[] = "#base: bad workbuf length";
++const char wuffs_base__error__bad_wuffs_version[] = "#base: bad wuffs version";
++const char wuffs_base__error__cannot_return_a_suspension[] = "#base: cannot return a suspension";
++const char wuffs_base__error__disabled_by_wuffs_config_dst_pixel_format_enable_allowlist[] = "#base: disabled by WUFFS_CONFIG__DST_PIXEL_FORMAT__ENABLE_ALLOWLIST";
++const char wuffs_base__error__disabled_by_previous_error[] = "#base: disabled by previous error";
++const char wuffs_base__error__initialize_falsely_claimed_already_zeroed[] = "#base: initialize falsely claimed already zeroed";
++const char wuffs_base__error__initialize_not_called[] = "#base: initialize not called";
++const char wuffs_base__error__insufficient_history[] = "#base: insufficient history";
++const char wuffs_base__error__interleaved_coroutine_calls[] = "#base: interleaved coroutine calls";
++const char wuffs_base__error__no_more_information[] = "#base: no more information";
++const char wuffs_base__error__not_enough_data[] = "#base: not enough data";
++const char wuffs_base__error__out_of_bounds[] = "#base: out of bounds";
++const char wuffs_base__error__unsupported_image_dimension[] = "#base: unsupported image dimension";
++const char wuffs_base__error__unsupported_method[] = "#base: unsupported method";
++const char wuffs_base__error__unsupported_option[] = "#base: unsupported option";
++const char wuffs_base__error__unsupported_pixel_swizzler_option[] = "#base: unsupported pixel swizzler option";
++const char wuffs_base__error__too_much_data[] = "#base: too much data";
+ 
+-    // Try the fast Eisel-Lemire algorithm again. Calculating the (man, exp10)
+-    // pair from the high_prec_dec h is more correct but slower than the
+-    // approach taken in wuffs_base__parse_number_f64. The latter is optimized
+-    // for the common cases (e.g. assuming no underscores or a leading '+'
+-    // sign) rather than the full set of cases allowed by the Wuffs API.
+-    //
+-    // When we have 19 or fewer mantissa digits, run Eisel-Lemire once (trying
+-    // for an exact result). When we have more than 19 mantissa digits, run it
+-    // twice to get a lower and upper bound. We still have an exact result
+-    // (within f64's rounding margin) if both bounds are equal (and valid).
+-    uint32_t i_max = h->num_digits;
+-    if (i_max > 19) {
+-      i_max = 19;
+-    }
+-    int32_t exp10 = h->decimal_point - ((int32_t)i_max);
+-    if ((-307 <= exp10) && (exp10 <= 288)) {
+-      uint64_t man = 0;
+-      uint32_t i;
+-      for (i = 0; i < i_max; i++) {
+-        man = (10 * man) + h->digits[i];
+-      }
+-      while (man != 0) {  // The 'while' is just an 'if' that we can 'break'.
+-        int64_t r0 =
+-            wuffs_base__private_implementation__parse_number_f64_eisel_lemire(
+-                man + 0, exp10);
+-        if (r0 < 0) {
+-          break;
+-        } else if (h->num_digits > 19) {
+-          int64_t r1 =
+-              wuffs_base__private_implementation__parse_number_f64_eisel_lemire(
+-                  man + 1, exp10);
+-          if (r1 != r0) {
+-            break;
+-          }
+-        }
+-        wuffs_base__result_f64 ret;
+-        ret.status.repr = NULL;
+-        ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(
+-            ((uint64_t)r0) | (((uint64_t)(h->negative)) << 63));
+-        return ret;
+-      }
+-    }
++const char wuffs_base__hasher_u32__vtable_name[] = "{vtable}wuffs_base__hasher_u32";
++const char wuffs_base__hasher_u64__vtable_name[] = "{vtable}wuffs_base__hasher_u64";
++const char wuffs_base__hasher_bitvec256__vtable_name[] = "{vtable}wuffs_base__hasher_bitvec256";
++const char wuffs_base__image_decoder__vtable_name[] = "{vtable}wuffs_base__image_decoder";
++const char wuffs_base__io_transformer__vtable_name[] = "{vtable}wuffs_base__io_transformer";
++const char wuffs_base__token_decoder__vtable_name[] = "{vtable}wuffs_base__token_decoder";
+ 
+-    // When Eisel-Lemire fails, fall back to Simple Decimal Conversion. See
+-    // https://nigeltao.github.io/blog/2020/parse-number-f64-simple.html
+-    //
+-    // Scale by powers of 2 until we're in the range [0.1 .. 10]. Equivalently,
+-    // that h->decimal_point is +0 or +1.
+-    //
+-    // First we shift right while at or above 10...
+-    const int32_t f64_bias = -1023;
+-    int32_t exp2 = 0;
+-    while (h->decimal_point > 1) {
+-      uint32_t n = (uint32_t)(+h->decimal_point);
+-      uint32_t shift =
+-          (n < num_powers)
+-              ? powers[n]
+-              : WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL;
+-
+-      wuffs_base__private_implementation__high_prec_dec__small_rshift(h, shift);
+-      if (h->decimal_point <
+-          -WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) {
+-        goto zero;
+-      }
+-      exp2 += (int32_t)shift;
+-    }
+-    // ...then we shift left while below 0.1.
+-    while (h->decimal_point < 0) {
+-      uint32_t shift;
+-      uint32_t n = (uint32_t)(-h->decimal_point);
+-      shift = (n < num_powers)
+-                  // The +1 is per "when targeting h->decimal_point being +0 or
+-                  // +1... when left shifting" in the powers comment above.
+-                  ? (powers[n] + 1)
+-                  : WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL;
++#endif  // !defined(WUFFS_CONFIG__MODULES) ||
++        // defined(WUFFS_CONFIG__MODULE__BASE)  ||
++        // defined(WUFFS_CONFIG__MODULE__BASE__CORE)
+ 
+-      wuffs_base__private_implementation__high_prec_dec__small_lshift(h, shift);
+-      if (h->decimal_point >
+-          +WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) {
+-        goto infinity;
+-      }
+-      exp2 -= (int32_t)shift;
+-    }
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
++    defined(WUFFS_CONFIG__MODULE__BASE__INTERFACES)
+ 
+-    // To get from "in the range [0.1 .. 10]" to "in the range [1 .. 2]" (which
+-    // will give us our exponent in base-2), the mantissa's first 3 digits will
+-    // determine the final left shift, equal to 52 (the number of explicit f64
+-    // bits) plus an additional adjustment.
+-    int man3 = (100 * h->digits[0]) +
+-               ((h->num_digits > 1) ? (10 * h->digits[1]) : 0) +
+-               ((h->num_digits > 2) ? h->digits[2] : 0);
+-    int32_t additional_lshift = 0;
+-    if (h->decimal_point == 0) {  // The value is in [0.1 .. 1].
+-      if (man3 < 125) {
+-        additional_lshift = +4;
+-      } else if (man3 < 250) {
+-        additional_lshift = +3;
+-      } else if (man3 < 500) {
+-        additional_lshift = +2;
+-      } else {
+-        additional_lshift = +1;
+-      }
+-    } else {  // The value is in [1 .. 10].
+-      if (man3 < 200) {
+-        additional_lshift = -0;
+-      } else if (man3 < 400) {
+-        additional_lshift = -1;
+-      } else if (man3 < 800) {
+-        additional_lshift = -2;
+-      } else {
+-        additional_lshift = -3;
+-      }
+-    }
+-    exp2 -= additional_lshift;
+-    uint32_t final_lshift = (uint32_t)(52 + additional_lshift);
++// ---------------- Interface Definitions.
+ 
+-    // The minimum normal exponent is (f64_bias + 1).
+-    while ((f64_bias + 1) > exp2) {
+-      uint32_t n = (uint32_t)((f64_bias + 1) - exp2);
+-      if (n > WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL) {
+-        n = WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL;
+-      }
+-      wuffs_base__private_implementation__high_prec_dec__small_rshift(h, n);
+-      exp2 += (int32_t)n;
+-    }
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_base__hasher_u32__checksum_u32(
++    const wuffs_base__hasher_u32* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
+ 
+-    // Check for overflow.
+-    if ((exp2 - f64_bias) >= 0x07FF) {  // (1 << 11) - 1.
+-      goto infinity;
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) {
++      const wuffs_base__hasher_u32__func_ptrs* func_ptrs =
++          (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->checksum_u32)(self);
++    } else if (v->vtable_name == NULL) {
++      break;
+     }
++    v++;
++  }
+ 
+-    // Extract 53 bits for the mantissa (in base-2).
+-    wuffs_base__private_implementation__high_prec_dec__small_lshift(
+-        h, final_lshift);
+-    uint64_t man2 =
+-        wuffs_base__private_implementation__high_prec_dec__rounded_integer(h);
++  return 0;
++}
+ 
+-    // Rounding might have added one bit. If so, shift and re-check overflow.
+-    if ((man2 >> 53) != 0) {
+-      man2 >>= 1;
+-      exp2++;
+-      if ((exp2 - f64_bias) >= 0x07FF) {  // (1 << 11) - 1.
+-        goto infinity;
+-      }
+-    }
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_base__hasher_u32__get_quirk(
++    const wuffs_base__hasher_u32* self,
++    uint32_t a_key) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
+ 
+-    // Handle subnormal numbers.
+-    if ((man2 >> 52) == 0) {
+-      exp2 = f64_bias;
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) {
++      const wuffs_base__hasher_u32__func_ptrs* func_ptrs =
++          (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->get_quirk)(self, a_key);
++    } else if (v->vtable_name == NULL) {
++      break;
+     }
++    v++;
++  }
+ 
+-    // Pack the bits and return.
+-    uint64_t exp2_bits =
+-        (uint64_t)((exp2 - f64_bias) & 0x07FF);              // (1 << 11) - 1.
+-    uint64_t bits = (man2 & 0x000FFFFFFFFFFFFF) |            // (1 << 52) - 1.
+-                    (exp2_bits << 52) |                      //
+-                    (h->negative ? 0x8000000000000000 : 0);  // (1 << 63).
+-
+-    wuffs_base__result_f64 ret;
+-    ret.status.repr = NULL;
+-    ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(bits);
+-    return ret;
+-  } while (0);
+-
+-zero:
+-  do {
+-    uint64_t bits = h->negative ? 0x8000000000000000 : 0;
++  return 0;
++}
+ 
+-    wuffs_base__result_f64 ret;
+-    ret.status.repr = NULL;
+-    ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(bits);
+-    return ret;
+-  } while (0);
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_base__hasher_u32__set_quirk(
++    wuffs_base__hasher_u32* self,
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++            ? wuffs_base__error__disabled_by_previous_error
++            : wuffs_base__error__initialize_not_called);
++  }
+ 
+-infinity:
+-  do {
+-    if (options & WUFFS_BASE__PARSE_NUMBER_FXX__REJECT_INF_AND_NAN) {
+-      wuffs_base__result_f64 ret;
+-      ret.status.repr = wuffs_base__error__bad_argument;
+-      ret.value = 0;
+-      return ret;
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) {
++      const wuffs_base__hasher_u32__func_ptrs* func_ptrs =
++          (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->set_quirk)(self, a_key, a_value);
++    } else if (v->vtable_name == NULL) {
++      break;
+     }
++    v++;
++  }
+ 
+-    uint64_t bits = h->negative ? 0xFFF0000000000000 : 0x7FF0000000000000;
+-
+-    wuffs_base__result_f64 ret;
+-    ret.status.repr = NULL;
+-    ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(bits);
+-    return ret;
+-  } while (0);
++  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
+ }
+ 
+-static inline bool  //
+-wuffs_base__private_implementation__is_decimal_digit(uint8_t c) {
+-  return ('0' <= c) && (c <= '9');
+-}
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_base__hasher_u32__update(
++    wuffs_base__hasher_u32* self,
++    wuffs_base__slice_u8 a_x) {
++  if (!self) {
++    return wuffs_base__make_empty_struct();
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_empty_struct();
++  }
+ 
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__result_f64  //
+-wuffs_base__parse_number_f64(wuffs_base__slice_u8 s, uint32_t options) {
+-  // In practice, almost all "dd.ddddE±xxx" numbers can be represented
+-  // losslessly by a uint64_t mantissa "dddddd" and an int32_t base-10
+-  // exponent, adjusting "xxx" for the position (if present) of the decimal
+-  // separator '.' or ','.
+-  //
+-  // This (u64 man, i32 exp10) data structure is superficially similar to the
+-  // "Do It Yourself Floating Point" type from Loitsch (†), but the exponent
+-  // here is base-10, not base-2.
+-  //
+-  // If s's number fits in a (man, exp10), parse that pair with the
+-  // Eisel-Lemire algorithm. If not, or if Eisel-Lemire fails, parsing s with
+-  // the fallback algorithm is slower but comprehensive.
+-  //
+-  // † "Printing Floating-Point Numbers Quickly and Accurately with Integers"
+-  // (https://www.cs.tufts.edu/~nr/cs257/archive/florian-loitsch/printf.pdf).
+-  // Florian Loitsch is also the primary contributor to
+-  // https://github.com/google/double-conversion
+-  do {
+-    // Calculating that (man, exp10) pair needs to stay within s's bounds.
+-    // Provided that s isn't extremely long, work on a NUL-terminated copy of
+-    // s's contents. The NUL byte isn't a valid part of "±dd.ddddE±xxx".
+-    //
+-    // As the pointer p walks the contents, it's faster to repeatedly check "is
+-    // *p a valid digit" than "is p within bounds and *p a valid digit".
+-    if (s.len >= 256) {
+-      goto fallback;
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) {
++      const wuffs_base__hasher_u32__func_ptrs* func_ptrs =
++          (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->update)(self, a_x);
++    } else if (v->vtable_name == NULL) {
++      break;
+     }
+-    uint8_t z[256];
+-    memcpy(&z[0], s.ptr, s.len);
+-    z[s.len] = 0;
+-    const uint8_t* p = &z[0];
++    v++;
++  }
+ 
+-    // Look for a leading minus sign. Technically, we could also look for an
+-    // optional plus sign, but the "script/process-json-numbers.c with -p"
+-    // benchmark is noticably slower if we do. It's optional and, in practice,
+-    // usually absent. Let the fallback catch it.
+-    bool negative = (*p == '-');
+-    if (negative) {
+-      p++;
+-    }
++  return wuffs_base__make_empty_struct();
++}
+ 
+-    // After walking "dd.dddd", comparing p later with p now will produce the
+-    // number of "d"s and "."s.
+-    const uint8_t* const start_of_digits_ptr = p;
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_base__hasher_u32__update_u32(
++    wuffs_base__hasher_u32* self,
++    wuffs_base__slice_u8 a_x) {
++  if (!self) {
++    return 0;
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return 0;
++  }
+ 
+-    // Walk the "d"s before a '.', 'E', NUL byte, etc. If it starts with '0',
+-    // it must be a single '0'. If it starts with a non-zero decimal digit, it
+-    // can be a sequence of decimal digits.
+-    //
+-    // Update the man variable during the walk. It's OK if man overflows now.
+-    // We'll detect that later.
+-    uint64_t man;
+-    if (*p == '0') {
+-      man = 0;
+-      p++;
+-      if (wuffs_base__private_implementation__is_decimal_digit(*p)) {
+-        goto fallback;
+-      }
+-    } else if (wuffs_base__private_implementation__is_decimal_digit(*p)) {
+-      man = ((uint8_t)(*p - '0'));
+-      p++;
+-      for (; wuffs_base__private_implementation__is_decimal_digit(*p); p++) {
+-        man = (10 * man) + ((uint8_t)(*p - '0'));
+-      }
+-    } else {
+-      goto fallback;
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) {
++      const wuffs_base__hasher_u32__func_ptrs* func_ptrs =
++          (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->update_u32)(self, a_x);
++    } else if (v->vtable_name == NULL) {
++      break;
+     }
++    v++;
++  }
+ 
+-    // Walk the "d"s after the optional decimal separator ('.' or ','),
+-    // updating the man and exp10 variables.
+-    int32_t exp10 = 0;
+-    if (*p ==
+-        ((options & WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
+-             ? ','
+-             : '.')) {
+-      p++;
+-      const uint8_t* first_after_separator_ptr = p;
+-      if (!wuffs_base__private_implementation__is_decimal_digit(*p)) {
+-        goto fallback;
+-      }
+-      man = (10 * man) + ((uint8_t)(*p - '0'));
+-      p++;
+-      for (; wuffs_base__private_implementation__is_decimal_digit(*p); p++) {
+-        man = (10 * man) + ((uint8_t)(*p - '0'));
+-      }
+-      exp10 = ((int32_t)(first_after_separator_ptr - p));
+-    }
++  return 0;
++}
+ 
+-    // Count the number of digits:
+-    //  - for an input of "314159",  digit_count is 6.
+-    //  - for an input of "3.14159", digit_count is 7.
+-    //
+-    // This is off-by-one if there is a decimal separator. That's OK for now.
+-    // We'll correct for that later. The "script/process-json-numbers.c with
+-    // -p" benchmark is noticably slower if we try to correct for that now.
+-    uint32_t digit_count = (uint32_t)(p - start_of_digits_ptr);
++// --------
+ 
+-    // Update exp10 for the optional exponent, starting with 'E' or 'e'.
+-    if ((*p | 0x20) == 'e') {
+-      p++;
+-      int32_t exp_sign = +1;
+-      if (*p == '-') {
+-        p++;
+-        exp_sign = -1;
+-      } else if (*p == '+') {
+-        p++;
+-      }
+-      if (!wuffs_base__private_implementation__is_decimal_digit(*p)) {
+-        goto fallback;
+-      }
+-      int32_t exp_num = ((uint8_t)(*p - '0'));
+-      p++;
+-      // The rest of the exp_num walking has a peculiar control flow but, once
+-      // again, the "script/process-json-numbers.c with -p" benchmark is
+-      // sensitive to alternative formulations.
+-      if (wuffs_base__private_implementation__is_decimal_digit(*p)) {
+-        exp_num = (10 * exp_num) + ((uint8_t)(*p - '0'));
+-        p++;
+-      }
+-      if (wuffs_base__private_implementation__is_decimal_digit(*p)) {
+-        exp_num = (10 * exp_num) + ((uint8_t)(*p - '0'));
+-        p++;
+-      }
+-      while (wuffs_base__private_implementation__is_decimal_digit(*p)) {
+-        if (exp_num > 0x1000000) {
+-          goto fallback;
+-        }
+-        exp_num = (10 * exp_num) + ((uint8_t)(*p - '0'));
+-        p++;
+-      }
+-      exp10 += exp_sign * exp_num;
+-    }
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_base__hasher_u64__checksum_u64(
++    const wuffs_base__hasher_u64* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
+ 
+-    // The Wuffs API is that the original slice has no trailing data. It also
+-    // allows underscores, which we don't catch here but the fallback should.
+-    if (p != &z[s.len]) {
+-      goto fallback;
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) {
++      const wuffs_base__hasher_u64__func_ptrs* func_ptrs =
++          (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->checksum_u64)(self);
++    } else if (v->vtable_name == NULL) {
++      break;
+     }
++    v++;
++  }
+ 
+-    // Check that the uint64_t typed man variable has not overflowed, based on
+-    // digit_count.
+-    //
+-    // For reference:
+-    //   - (1 << 63) is  9223372036854775808, which has 19 decimal digits.
+-    //   - (1 << 64) is 18446744073709551616, which has 20 decimal digits.
+-    //   - 19 nines,  9999999999999999999, is  0x8AC7230489E7FFFF, which has 64
+-    //     bits and 16 hexadecimal digits.
+-    //   - 20 nines, 99999999999999999999, is 0x56BC75E2D630FFFFF, which has 67
+-    //     bits and 17 hexadecimal digits.
+-    if (digit_count > 19) {
+-      // Even if we have more than 19 pseudo-digits, it's not yet definitely an
+-      // overflow. Recall that digit_count might be off-by-one (too large) if
+-      // there's a decimal separator. It will also over-report the number of
+-      // meaningful digits if the input looks something like "0.000dddExxx".
+-      //
+-      // We adjust by the number of leading '0's and '.'s and re-compare to 19.
+-      // Once again, technically, we could skip ','s too, but that perturbs the
+-      // "script/process-json-numbers.c with -p" benchmark.
+-      const uint8_t* q = start_of_digits_ptr;
+-      for (; (*q == '0') || (*q == '.'); q++) {
+-      }
+-      digit_count -= (uint32_t)(q - start_of_digits_ptr);
+-      if (digit_count > 19) {
+-        goto fallback;
+-      }
+-    }
++  return 0;
++}
+ 
+-    // The wuffs_base__private_implementation__parse_number_f64_eisel_lemire
+-    // preconditions include that exp10 is in the range [-307 ..= 288].
+-    if ((exp10 < -307) || (288 < exp10)) {
+-      goto fallback;
+-    }
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_base__hasher_u64__get_quirk(
++    const wuffs_base__hasher_u64* self,
++    uint32_t a_key) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
+ 
+-    // If both man and (10 ** exp10) are exactly representable by a double, we
+-    // don't need to run the Eisel-Lemire algorithm.
+-    if ((-22 <= exp10) && (exp10 <= 22) && ((man >> 53) == 0)) {
+-      double d = (double)man;
+-      if (exp10 >= 0) {
+-        d *= wuffs_base__private_implementation__f64_powers_of_10[+exp10];
+-      } else {
+-        d /= wuffs_base__private_implementation__f64_powers_of_10[-exp10];
+-      }
+-      wuffs_base__result_f64 ret;
+-      ret.status.repr = NULL;
+-      ret.value = negative ? -d : +d;
+-      return ret;
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) {
++      const wuffs_base__hasher_u64__func_ptrs* func_ptrs =
++          (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->get_quirk)(self, a_key);
++    } else if (v->vtable_name == NULL) {
++      break;
+     }
++    v++;
++  }
+ 
+-    // The wuffs_base__private_implementation__parse_number_f64_eisel_lemire
+-    // preconditions include that man is non-zero. Parsing "0" should be caught
+-    // by the "If both man and (10 ** exp10)" above, but "0e99" might not.
+-    if (man == 0) {
+-      goto fallback;
+-    }
++  return 0;
++}
+ 
+-    // Our man and exp10 are in range. Run the Eisel-Lemire algorithm.
+-    int64_t r =
+-        wuffs_base__private_implementation__parse_number_f64_eisel_lemire(
+-            man, exp10);
+-    if (r < 0) {
+-      goto fallback;
+-    }
+-    wuffs_base__result_f64 ret;
+-    ret.status.repr = NULL;
+-    ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(
+-        ((uint64_t)r) | (((uint64_t)negative) << 63));
+-    return ret;
+-  } while (0);
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_base__hasher_u64__set_quirk(
++    wuffs_base__hasher_u64* self,
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++            ? wuffs_base__error__disabled_by_previous_error
++            : wuffs_base__error__initialize_not_called);
++  }
+ 
+-fallback:
+-  do {
+-    wuffs_base__private_implementation__high_prec_dec h;
+-    wuffs_base__status status =
+-        wuffs_base__private_implementation__high_prec_dec__parse(&h, s,
+-                                                                 options);
+-    if (status.repr) {
+-      return wuffs_base__private_implementation__parse_number_f64_special(
+-          s, options);
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) {
++      const wuffs_base__hasher_u64__func_ptrs* func_ptrs =
++          (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->set_quirk)(self, a_key, a_value);
++    } else if (v->vtable_name == NULL) {
++      break;
+     }
+-    return wuffs_base__private_implementation__high_prec_dec__to_f64(&h,
+-                                                                     options);
+-  } while (0);
+-}
++    v++;
++  }
+ 
+-// --------
++  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
++}
+ 
+-static inline size_t  //
+-wuffs_base__private_implementation__render_inf(wuffs_base__slice_u8 dst,
+-                                               bool neg,
+-                                               uint32_t options) {
+-  if (neg) {
+-    if (dst.len < 4) {
+-      return 0;
+-    }
+-    wuffs_base__poke_u32le__no_bounds_check(dst.ptr, 0x666E492D);  // '-Inf'le.
+-    return 4;
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_base__hasher_u64__update(
++    wuffs_base__hasher_u64* self,
++    wuffs_base__slice_u8 a_x) {
++  if (!self) {
++    return wuffs_base__make_empty_struct();
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_empty_struct();
+   }
+ 
+-  if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) {
+-    if (dst.len < 4) {
+-      return 0;
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) {
++      const wuffs_base__hasher_u64__func_ptrs* func_ptrs =
++          (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->update)(self, a_x);
++    } else if (v->vtable_name == NULL) {
++      break;
+     }
+-    wuffs_base__poke_u32le__no_bounds_check(dst.ptr, 0x666E492B);  // '+Inf'le.
+-    return 4;
++    v++;
+   }
+ 
+-  if (dst.len < 3) {
+-    return 0;
+-  }
+-  wuffs_base__poke_u24le__no_bounds_check(dst.ptr, 0x666E49);  // 'Inf'le.
+-  return 3;
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-static inline size_t  //
+-wuffs_base__private_implementation__render_nan(wuffs_base__slice_u8 dst) {
+-  if (dst.len < 3) {
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_base__hasher_u64__update_u64(
++    wuffs_base__hasher_u64* self,
++    wuffs_base__slice_u8 a_x) {
++  if (!self) {
+     return 0;
+   }
+-  wuffs_base__poke_u24le__no_bounds_check(dst.ptr, 0x4E614E);  // 'NaN'le.
+-  return 3;
+-}
+-
+-static size_t  //
+-wuffs_base__private_implementation__high_prec_dec__render_exponent_absent(
+-    wuffs_base__slice_u8 dst,
+-    wuffs_base__private_implementation__high_prec_dec* h,
+-    uint32_t precision,
+-    uint32_t options) {
+-  size_t n = (h->negative ||
+-              (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN))
+-                 ? 1
+-                 : 0;
+-  if (h->decimal_point <= 0) {
+-    n += 1;
+-  } else {
+-    n += (size_t)(h->decimal_point);
+-  }
+-  if (precision > 0) {
+-    n += precision + 1;  // +1 for the '.'.
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return 0;
+   }
+ 
+-  // Don't modify dst if the formatted number won't fit.
+-  if (n > dst.len) {
+-    return 0;
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) {
++      const wuffs_base__hasher_u64__func_ptrs* func_ptrs =
++          (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->update_u64)(self, a_x);
++    } else if (v->vtable_name == NULL) {
++      break;
++    }
++    v++;
+   }
+ 
+-  // Align-left or align-right.
+-  uint8_t* ptr = (options & WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT)
+-                     ? &dst.ptr[dst.len - n]
+-                     : &dst.ptr[0];
++  return 0;
++}
+ 
+-  // Leading "±".
+-  if (h->negative) {
+-    *ptr++ = '-';
+-  } else if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) {
+-    *ptr++ = '+';
+-  }
++// --------
+ 
+-  // Integral digits.
+-  if (h->decimal_point <= 0) {
+-    *ptr++ = '0';
+-  } else {
+-    uint32_t m =
+-        wuffs_base__u32__min(h->num_digits, (uint32_t)(h->decimal_point));
+-    uint32_t i = 0;
+-    for (; i < m; i++) {
+-      *ptr++ = (uint8_t)('0' | h->digits[i]);
+-    }
+-    for (; i < (uint32_t)(h->decimal_point); i++) {
+-      *ptr++ = '0';
+-    }
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__bitvec256
++wuffs_base__hasher_bitvec256__checksum_bitvec256(
++    const wuffs_base__hasher_bitvec256* self) {
++  if (!self) {
++    return wuffs_base__utility__make_bitvec256(0u, 0u, 0u, 0u);
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__make_bitvec256(0u, 0u, 0u, 0u);
+   }
+ 
+-  // Separator and then fractional digits.
+-  if (precision > 0) {
+-    *ptr++ =
+-        (options & WUFFS_BASE__RENDER_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
+-            ? ','
+-            : '.';
+-    uint32_t i = 0;
+-    for (; i < precision; i++) {
+-      uint32_t j = ((uint32_t)(h->decimal_point)) + i;
+-      *ptr++ = (uint8_t)('0' | ((j < h->num_digits) ? h->digits[j] : 0));
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__hasher_bitvec256__vtable_name) {
++      const wuffs_base__hasher_bitvec256__func_ptrs* func_ptrs =
++          (const wuffs_base__hasher_bitvec256__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->checksum_bitvec256)(self);
++    } else if (v->vtable_name == NULL) {
++      break;
+     }
++    v++;
+   }
+ 
+-  return n;
++  return wuffs_base__utility__make_bitvec256(0u, 0u, 0u, 0u);
+ }
+ 
+-static size_t  //
+-wuffs_base__private_implementation__high_prec_dec__render_exponent_present(
+-    wuffs_base__slice_u8 dst,
+-    wuffs_base__private_implementation__high_prec_dec* h,
+-    uint32_t precision,
+-    uint32_t options) {
+-  int32_t exp = 0;
+-  if (h->num_digits > 0) {
+-    exp = h->decimal_point - 1;
+-  }
+-  bool negative_exp = exp < 0;
+-  if (negative_exp) {
+-    exp = -exp;
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_base__hasher_bitvec256__get_quirk(
++    const wuffs_base__hasher_bitvec256* self,
++    uint32_t a_key) {
++  if (!self) {
++    return 0;
+   }
+-
+-  size_t n = (h->negative ||
+-              (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN))
+-                 ? 4
+-                 : 3;  // Mininum 3 bytes: first digit and then "e±".
+-  if (precision > 0) {
+-    n += precision + 1;  // +1 for the '.'.
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
+   }
+-  n += (exp < 100) ? 2 : 3;
+ 
+-  // Don't modify dst if the formatted number won't fit.
+-  if (n > dst.len) {
+-    return 0;
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__hasher_bitvec256__vtable_name) {
++      const wuffs_base__hasher_bitvec256__func_ptrs* func_ptrs =
++          (const wuffs_base__hasher_bitvec256__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->get_quirk)(self, a_key);
++    } else if (v->vtable_name == NULL) {
++      break;
++    }
++    v++;
+   }
+ 
+-  // Align-left or align-right.
+-  uint8_t* ptr = (options & WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT)
+-                     ? &dst.ptr[dst.len - n]
+-                     : &dst.ptr[0];
++  return 0;
++}
+ 
+-  // Leading "±".
+-  if (h->negative) {
+-    *ptr++ = '-';
+-  } else if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) {
+-    *ptr++ = '+';
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_base__hasher_bitvec256__set_quirk(
++    wuffs_base__hasher_bitvec256* self,
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+-
+-  // Integral digit.
+-  if (h->num_digits > 0) {
+-    *ptr++ = (uint8_t)('0' | h->digits[0]);
+-  } else {
+-    *ptr++ = '0';
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++            ? wuffs_base__error__disabled_by_previous_error
++            : wuffs_base__error__initialize_not_called);
+   }
+ 
+-  // Separator and then fractional digits.
+-  if (precision > 0) {
+-    *ptr++ =
+-        (options & WUFFS_BASE__RENDER_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
+-            ? ','
+-            : '.';
+-    uint32_t i = 1;
+-    uint32_t j = wuffs_base__u32__min(h->num_digits, precision + 1);
+-    for (; i < j; i++) {
+-      *ptr++ = (uint8_t)('0' | h->digits[i]);
+-    }
+-    for (; i <= precision; i++) {
+-      *ptr++ = '0';
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__hasher_bitvec256__vtable_name) {
++      const wuffs_base__hasher_bitvec256__func_ptrs* func_ptrs =
++          (const wuffs_base__hasher_bitvec256__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->set_quirk)(self, a_key, a_value);
++    } else if (v->vtable_name == NULL) {
++      break;
+     }
++    v++;
+   }
+ 
+-  // Exponent: "e±" and then 2 or 3 digits.
+-  *ptr++ = 'e';
+-  *ptr++ = negative_exp ? '-' : '+';
+-  if (exp < 10) {
+-    *ptr++ = '0';
+-    *ptr++ = (uint8_t)('0' | exp);
+-  } else if (exp < 100) {
+-    *ptr++ = (uint8_t)('0' | (exp / 10));
+-    *ptr++ = (uint8_t)('0' | (exp % 10));
+-  } else {
+-    int32_t e = exp / 100;
+-    exp -= e * 100;
+-    *ptr++ = (uint8_t)('0' | e);
+-    *ptr++ = (uint8_t)('0' | (exp / 10));
+-    *ptr++ = (uint8_t)('0' | (exp % 10));
+-  }
+-
+-  return n;
++  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
+ }
+ 
+-WUFFS_BASE__MAYBE_STATIC size_t  //
+-wuffs_base__render_number_f64(wuffs_base__slice_u8 dst,
+-                              double x,
+-                              uint32_t precision,
+-                              uint32_t options) {
+-  // Decompose x (64 bits) into negativity (1 bit), base-2 exponent (11 bits
+-  // with a -1023 bias) and mantissa (52 bits).
+-  uint64_t bits = wuffs_base__ieee_754_bit_representation__from_f64_to_u64(x);
+-  bool neg = (bits >> 63) != 0;
+-  int32_t exp2 = ((int32_t)(bits >> 52)) & 0x7FF;
+-  uint64_t man = bits & 0x000FFFFFFFFFFFFFul;
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_base__hasher_bitvec256__update(
++    wuffs_base__hasher_bitvec256* self,
++    wuffs_base__slice_u8 a_x) {
++  if (!self) {
++    return wuffs_base__make_empty_struct();
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_empty_struct();
++  }
+ 
+-  // Apply the exponent bias and set the implicit top bit of the mantissa,
+-  // unless x is subnormal. Also take care of Inf and NaN.
+-  if (exp2 == 0x7FF) {
+-    if (man != 0) {
+-      return wuffs_base__private_implementation__render_nan(dst);
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__hasher_bitvec256__vtable_name) {
++      const wuffs_base__hasher_bitvec256__func_ptrs* func_ptrs =
++          (const wuffs_base__hasher_bitvec256__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->update)(self, a_x);
++    } else if (v->vtable_name == NULL) {
++      break;
+     }
+-    return wuffs_base__private_implementation__render_inf(dst, neg, options);
+-  } else if (exp2 == 0) {
+-    exp2 = -1022;
+-  } else {
+-    exp2 -= 1023;
+-    man |= 0x0010000000000000ul;
++    v++;
+   }
+ 
+-  // Ensure that precision isn't too large.
+-  if (precision > 4095) {
+-    precision = 4095;
++  return wuffs_base__make_empty_struct();
++}
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__bitvec256
++wuffs_base__hasher_bitvec256__update_bitvec256(
++    wuffs_base__hasher_bitvec256* self,
++    wuffs_base__slice_u8 a_x) {
++  if (!self) {
++    return wuffs_base__utility__make_bitvec256(0u, 0u, 0u, 0u);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__utility__make_bitvec256(0u, 0u, 0u, 0u);
+   }
+ 
+-  // Convert from the (neg, exp2, man) tuple to an HPD.
+-  wuffs_base__private_implementation__high_prec_dec h;
+-  wuffs_base__private_implementation__high_prec_dec__assign(&h, man, neg);
+-  if (h.num_digits > 0) {
+-    wuffs_base__private_implementation__high_prec_dec__lshift(
+-        &h, exp2 - 52);  // 52 mantissa bits.
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__hasher_bitvec256__vtable_name) {
++      const wuffs_base__hasher_bitvec256__func_ptrs* func_ptrs =
++          (const wuffs_base__hasher_bitvec256__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->update_bitvec256)(self, a_x);
++    } else if (v->vtable_name == NULL) {
++      break;
++    }
++    v++;
+   }
+ 
+-  // Handle the "%e" and "%f" formats.
+-  switch (options & (WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ABSENT |
+-                     WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_PRESENT)) {
+-    case WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ABSENT:  // The "%"f" format.
+-      if (options & WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION) {
+-        wuffs_base__private_implementation__high_prec_dec__round_just_enough(
+-            &h, exp2, man);
+-        int32_t p = ((int32_t)(h.num_digits)) - h.decimal_point;
+-        precision = ((uint32_t)(wuffs_base__i32__max(0, p)));
+-      } else {
+-        wuffs_base__private_implementation__high_prec_dec__round_nearest(
+-            &h, ((int32_t)precision) + h.decimal_point);
+-      }
+-      return wuffs_base__private_implementation__high_prec_dec__render_exponent_absent(
+-          dst, &h, precision, options);
++  return wuffs_base__utility__make_bitvec256(0u, 0u, 0u, 0u);
++}
+ 
+-    case WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_PRESENT:  // The "%e" format.
+-      if (options & WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION) {
+-        wuffs_base__private_implementation__high_prec_dec__round_just_enough(
+-            &h, exp2, man);
+-        precision = (h.num_digits > 0) ? (h.num_digits - 1) : 0;
+-      } else {
+-        wuffs_base__private_implementation__high_prec_dec__round_nearest(
+-            &h, ((int32_t)precision) + 1);
+-      }
+-      return wuffs_base__private_implementation__high_prec_dec__render_exponent_present(
+-          dst, &h, precision, options);
++// --------
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_base__image_decoder__decode_frame(
++    wuffs_base__image_decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++            ? wuffs_base__error__disabled_by_previous_error
++            : wuffs_base__error__initialize_not_called);
+   }
+ 
+-  // We have the "%g" format and so precision means the number of significant
+-  // digits, not the number of digits after the decimal separator. Perform
+-  // rounding and determine whether to use "%e" or "%f".
+-  int32_t e_threshold = 0;
+-  if (options & WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION) {
+-    wuffs_base__private_implementation__high_prec_dec__round_just_enough(
+-        &h, exp2, man);
+-    precision = h.num_digits;
+-    e_threshold = 6;
+-  } else {
+-    if (precision == 0) {
+-      precision = 1;
+-    }
+-    wuffs_base__private_implementation__high_prec_dec__round_nearest(
+-        &h, ((int32_t)precision));
+-    e_threshold = ((int32_t)precision);
+-    int32_t nd = ((int32_t)(h.num_digits));
+-    if ((e_threshold > nd) && (nd >= h.decimal_point)) {
+-      e_threshold = nd;
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
++      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
++          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->decode_frame)(self, a_dst, a_src, a_blend, a_workbuf, a_opts);
++    } else if (v->vtable_name == NULL) {
++      break;
+     }
++    v++;
+   }
+ 
+-  // Use the "%e" format if the exponent is large.
+-  int32_t e = h.decimal_point - 1;
+-  if ((e < -4) || (e_threshold <= e)) {
+-    uint32_t p = wuffs_base__u32__min(precision, h.num_digits);
+-    return wuffs_base__private_implementation__high_prec_dec__render_exponent_present(
+-        dst, &h, (p > 0) ? (p - 1) : 0, options);
++  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
++}
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_base__image_decoder__decode_frame_config(
++    wuffs_base__image_decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++            ? wuffs_base__error__disabled_by_previous_error
++            : wuffs_base__error__initialize_not_called);
+   }
+ 
+-  // Use the "%f" format otherwise.
+-  int32_t p = ((int32_t)precision);
+-  if (p > h.decimal_point) {
+-    p = ((int32_t)(h.num_digits));
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
++      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
++          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->decode_frame_config)(self, a_dst, a_src);
++    } else if (v->vtable_name == NULL) {
++      break;
++    }
++    v++;
+   }
+-  precision = ((uint32_t)(wuffs_base__i32__max(0, p - h.decimal_point)));
+-  return wuffs_base__private_implementation__high_prec_dec__render_exponent_absent(
+-      dst, &h, precision, options);
++
++  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
+ }
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) ||
+-        // defined(WUFFS_CONFIG__MODULE__BASE) ||
+-        // defined(WUFFS_CONFIG__MODULE__BASE__FLOATCONV)
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_base__image_decoder__decode_image_config(
++    wuffs_base__image_decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++            ? wuffs_base__error__disabled_by_previous_error
++            : wuffs_base__error__initialize_not_called);
++  }
+ 
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
+-    defined(WUFFS_CONFIG__MODULE__BASE__INTCONV)
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
++      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
++          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->decode_image_config)(self, a_dst, a_src);
++    } else if (v->vtable_name == NULL) {
++      break;
++    }
++    v++;
++  }
+ 
+-// ---------------- Integer
++  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
++}
+ 
+-// wuffs_base__parse_number__foo_digits entries are 0x00 for invalid digits,
+-// and (0x80 | v) for valid digits, where v is the 4 bit value.
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
++wuffs_base__image_decoder__frame_dirty_rect(
++    const wuffs_base__image_decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_rect_ie_u32();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_rect_ie_u32();
++  }
+ 
+-static const uint8_t wuffs_base__parse_number__decimal_digits[256] = {
+-    // 0     1     2     3     4     5     6     7
+-    // 8     9     A     B     C     D     E     F
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x00 ..= 0x07.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x08 ..= 0x0F.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x10 ..= 0x17.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x18 ..= 0x1F.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x20 ..= 0x27.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x28 ..= 0x2F.
+-    0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,  // 0x30 ..= 0x37. '0'-'7'.
+-    0x88, 0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x38 ..= 0x3F. '8'-'9'.
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
++      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
++          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->frame_dirty_rect)(self);
++    } else if (v->vtable_name == NULL) {
++      break;
++    }
++    v++;
++  }
+ 
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x40 ..= 0x47.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x48 ..= 0x4F.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x50 ..= 0x57.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x58 ..= 0x5F.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x60 ..= 0x67.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x68 ..= 0x6F.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x70 ..= 0x77.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x78 ..= 0x7F.
++  return wuffs_base__utility__empty_rect_ie_u32();
++}
+ 
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x80 ..= 0x87.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x88 ..= 0x8F.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x90 ..= 0x97.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x98 ..= 0x9F.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xA0 ..= 0xA7.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xA8 ..= 0xAF.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xB0 ..= 0xB7.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xB8 ..= 0xBF.
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_base__image_decoder__get_quirk(
++    const wuffs_base__image_decoder* self,
++    uint32_t a_key) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
+ 
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xC0 ..= 0xC7.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xC8 ..= 0xCF.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xD0 ..= 0xD7.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xD8 ..= 0xDF.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xE0 ..= 0xE7.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xE8 ..= 0xEF.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xF0 ..= 0xF7.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xF8 ..= 0xFF.
+-    // 0     1     2     3     4     5     6     7
+-    // 8     9     A     B     C     D     E     F
+-};
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
++      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
++          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->get_quirk)(self, a_key);
++    } else if (v->vtable_name == NULL) {
++      break;
++    }
++    v++;
++  }
+ 
+-static const uint8_t wuffs_base__parse_number__hexadecimal_digits[256] = {
+-    // 0     1     2     3     4     5     6     7
+-    // 8     9     A     B     C     D     E     F
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x00 ..= 0x07.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x08 ..= 0x0F.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x10 ..= 0x17.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x18 ..= 0x1F.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x20 ..= 0x27.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x28 ..= 0x2F.
+-    0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,  // 0x30 ..= 0x37. '0'-'7'.
+-    0x88, 0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x38 ..= 0x3F. '8'-'9'.
++  return 0;
++}
+ 
+-    0x00, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x00,  // 0x40 ..= 0x47. 'A'-'F'.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x48 ..= 0x4F.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x50 ..= 0x57.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x58 ..= 0x5F.
+-    0x00, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x00,  // 0x60 ..= 0x67. 'a'-'f'.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x68 ..= 0x6F.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x70 ..= 0x77.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x78 ..= 0x7F.
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_base__image_decoder__num_animation_loops(
++    const wuffs_base__image_decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
+ 
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x80 ..= 0x87.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x88 ..= 0x8F.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x90 ..= 0x97.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x98 ..= 0x9F.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xA0 ..= 0xA7.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xA8 ..= 0xAF.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xB0 ..= 0xB7.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xB8 ..= 0xBF.
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
++      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
++          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->num_animation_loops)(self);
++    } else if (v->vtable_name == NULL) {
++      break;
++    }
++    v++;
++  }
+ 
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xC0 ..= 0xC7.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xC8 ..= 0xCF.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xD0 ..= 0xD7.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xD8 ..= 0xDF.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xE0 ..= 0xE7.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xE8 ..= 0xEF.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xF0 ..= 0xF7.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xF8 ..= 0xFF.
+-    // 0     1     2     3     4     5     6     7
+-    // 8     9     A     B     C     D     E     F
+-};
++  return 0;
++}
+ 
+-static const uint8_t wuffs_base__private_implementation__encode_base16[16] = {
+-    0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,  // 0x00 ..= 0x07.
+-    0x38, 0x39, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46,  // 0x08 ..= 0x0F.
+-};
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_base__image_decoder__num_decoded_frame_configs(
++    const wuffs_base__image_decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
+ 
+-// --------
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
++      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
++          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->num_decoded_frame_configs)(self);
++    } else if (v->vtable_name == NULL) {
++      break;
++    }
++    v++;
++  }
+ 
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__result_i64  //
+-wuffs_base__parse_number_i64(wuffs_base__slice_u8 s, uint32_t options) {
+-  uint8_t* p = s.ptr;
+-  uint8_t* q = s.ptr + s.len;
++  return 0;
++}
+ 
+-  if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
+-    for (; (p < q) && (*p == '_'); p++) {
+-    }
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_base__image_decoder__num_decoded_frames(
++    const wuffs_base__image_decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
+   }
+ 
+-  bool negative = false;
+-  if (p >= q) {
+-    goto fail_bad_argument;
+-  } else if (*p == '-') {
+-    p++;
+-    negative = true;
+-  } else if (*p == '+') {
+-    p++;
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
++      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
++          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->num_decoded_frames)(self);
++    } else if (v->vtable_name == NULL) {
++      break;
++    }
++    v++;
+   }
+ 
+-  do {
+-    wuffs_base__result_u64 r = wuffs_base__parse_number_u64(
+-        wuffs_base__make_slice_u8(p, (size_t)(q - p)), options);
+-    if (r.status.repr != NULL) {
+-      wuffs_base__result_i64 ret;
+-      ret.status.repr = r.status.repr;
+-      ret.value = 0;
+-      return ret;
+-    } else if (negative) {
+-      if (r.value < 0x8000000000000000) {
+-        wuffs_base__result_i64 ret;
+-        ret.status.repr = NULL;
+-        ret.value = -(int64_t)(r.value);
+-        return ret;
+-      } else if (r.value == 0x8000000000000000) {
+-        wuffs_base__result_i64 ret;
+-        ret.status.repr = NULL;
+-        ret.value = INT64_MIN;
+-        return ret;
+-      }
+-      goto fail_out_of_bounds;
+-    } else if (r.value > 0x7FFFFFFFFFFFFFFF) {
+-      goto fail_out_of_bounds;
+-    } else {
+-      wuffs_base__result_i64 ret;
+-      ret.status.repr = NULL;
+-      ret.value = +(int64_t)(r.value);
+-      return ret;
+-    }
+-  } while (0);
+-
+-fail_bad_argument:
+-  do {
+-    wuffs_base__result_i64 ret;
+-    ret.status.repr = wuffs_base__error__bad_argument;
+-    ret.value = 0;
+-    return ret;
+-  } while (0);
+-
+-fail_out_of_bounds:
+-  do {
+-    wuffs_base__result_i64 ret;
+-    ret.status.repr = wuffs_base__error__out_of_bounds;
+-    ret.value = 0;
+-    return ret;
+-  } while (0);
++  return 0;
+ }
+ 
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__result_u64  //
+-wuffs_base__parse_number_u64(wuffs_base__slice_u8 s, uint32_t options) {
+-  uint8_t* p = s.ptr;
+-  uint8_t* q = s.ptr + s.len;
+-
+-  if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
+-    for (; (p < q) && (*p == '_'); p++) {
+-    }
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_base__image_decoder__restart_frame(
++    wuffs_base__image_decoder* self,
++    uint64_t a_index,
++    uint64_t a_io_position) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++            ? wuffs_base__error__disabled_by_previous_error
++            : wuffs_base__error__initialize_not_called);
+   }
+ 
+-  if (p >= q) {
+-    goto fail_bad_argument;
+-
+-  } else if (*p == '0') {
+-    p++;
+-    if (p >= q) {
+-      goto ok_zero;
+-    }
+-    if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
+-      if (*p == '_') {
+-        p++;
+-        for (; p < q; p++) {
+-          if (*p != '_') {
+-            if (options &
+-                WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES) {
+-              goto decimal;
+-            }
+-            goto fail_bad_argument;
+-          }
+-        }
+-        goto ok_zero;
+-      }
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
++      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
++          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->restart_frame)(self, a_index, a_io_position);
++    } else if (v->vtable_name == NULL) {
++      break;
+     }
++    v++;
++  }
+ 
+-    if ((*p == 'x') || (*p == 'X')) {
+-      p++;
+-      if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
+-        for (; (p < q) && (*p == '_'); p++) {
+-        }
+-      }
+-      if (p < q) {
+-        goto hexadecimal;
+-      }
++  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
++}
+ 
+-    } else if ((*p == 'd') || (*p == 'D')) {
+-      p++;
+-      if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
+-        for (; (p < q) && (*p == '_'); p++) {
+-        }
+-      }
+-      if (p < q) {
+-        goto decimal;
+-      }
+-    }
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_base__image_decoder__set_quirk(
++    wuffs_base__image_decoder* self,
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++            ? wuffs_base__error__disabled_by_previous_error
++            : wuffs_base__error__initialize_not_called);
++  }
+ 
+-    if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES) {
+-      goto decimal;
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
++      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
++          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->set_quirk)(self, a_key, a_value);
++    } else if (v->vtable_name == NULL) {
++      break;
+     }
+-    goto fail_bad_argument;
++    v++;
+   }
+ 
+-decimal:
+-  do {
+-    uint64_t v = wuffs_base__parse_number__decimal_digits[*p++];
+-    if (v == 0) {
+-      goto fail_bad_argument;
+-    }
+-    v &= 0x0F;
++  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
++}
+ 
+-    // UINT64_MAX is 18446744073709551615, which is ((10 * max10) + max1).
+-    const uint64_t max10 = 1844674407370955161u;
+-    const uint8_t max1 = 5;
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_base__image_decoder__set_report_metadata(
++    wuffs_base__image_decoder* self,
++    uint32_t a_fourcc,
++    bool a_report) {
++  if (!self) {
++    return wuffs_base__make_empty_struct();
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_empty_struct();
++  }
+ 
+-    for (; p < q; p++) {
+-      if ((*p == '_') &&
+-          (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
+-        continue;
+-      }
+-      uint8_t digit = wuffs_base__parse_number__decimal_digits[*p];
+-      if (digit == 0) {
+-        goto fail_bad_argument;
+-      }
+-      digit &= 0x0F;
+-      if ((v > max10) || ((v == max10) && (digit > max1))) {
+-        goto fail_out_of_bounds;
+-      }
+-      v = (10 * v) + ((uint64_t)(digit));
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
++      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
++          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->set_report_metadata)(self, a_fourcc, a_report);
++    } else if (v->vtable_name == NULL) {
++      break;
+     }
++    v++;
++  }
+ 
+-    wuffs_base__result_u64 ret;
+-    ret.status.repr = NULL;
+-    ret.value = v;
+-    return ret;
+-  } while (0);
++  return wuffs_base__make_empty_struct();
++}
+ 
+-hexadecimal:
+-  do {
+-    uint64_t v = wuffs_base__parse_number__hexadecimal_digits[*p++];
+-    if (v == 0) {
+-      goto fail_bad_argument;
+-    }
+-    v &= 0x0F;
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_base__image_decoder__tell_me_more(
++    wuffs_base__image_decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__more_information* a_minfo,
++    wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++            ? wuffs_base__error__disabled_by_previous_error
++            : wuffs_base__error__initialize_not_called);
++  }
+ 
+-    for (; p < q; p++) {
+-      if ((*p == '_') &&
+-          (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
+-        continue;
+-      }
+-      uint8_t digit = wuffs_base__parse_number__hexadecimal_digits[*p];
+-      if (digit == 0) {
+-        goto fail_bad_argument;
+-      }
+-      digit &= 0x0F;
+-      if ((v >> 60) != 0) {
+-        goto fail_out_of_bounds;
+-      }
+-      v = (v << 4) | ((uint64_t)(digit));
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
++      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
++          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->tell_me_more)(self, a_dst, a_minfo, a_src);
++    } else if (v->vtable_name == NULL) {
++      break;
+     }
++    v++;
++  }
+ 
+-    wuffs_base__result_u64 ret;
+-    ret.status.repr = NULL;
+-    ret.value = v;
+-    return ret;
+-  } while (0);
++  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
++}
+ 
+-ok_zero:
+-  do {
+-    wuffs_base__result_u64 ret;
+-    ret.status.repr = NULL;
+-    ret.value = 0;
+-    return ret;
+-  } while (0);
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_base__image_decoder__workbuf_len(
++    const wuffs_base__image_decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
+ 
+-fail_bad_argument:
+-  do {
+-    wuffs_base__result_u64 ret;
+-    ret.status.repr = wuffs_base__error__bad_argument;
+-    ret.value = 0;
+-    return ret;
+-  } while (0);
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
++      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
++          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->workbuf_len)(self);
++    } else if (v->vtable_name == NULL) {
++      break;
++    }
++    v++;
++  }
+ 
+-fail_out_of_bounds:
+-  do {
+-    wuffs_base__result_u64 ret;
+-    ret.status.repr = wuffs_base__error__out_of_bounds;
+-    ret.value = 0;
+-    return ret;
+-  } while (0);
++  return wuffs_base__utility__empty_range_ii_u64();
+ }
+ 
+ // --------
+ 
+-// wuffs_base__render_number__first_hundred contains the decimal encodings of
+-// the first one hundred numbers [0 ..= 99].
+-static const uint8_t wuffs_base__render_number__first_hundred[200] = {
+-    '0', '0', '0', '1', '0', '2', '0', '3', '0', '4',  //
+-    '0', '5', '0', '6', '0', '7', '0', '8', '0', '9',  //
+-    '1', '0', '1', '1', '1', '2', '1', '3', '1', '4',  //
+-    '1', '5', '1', '6', '1', '7', '1', '8', '1', '9',  //
+-    '2', '0', '2', '1', '2', '2', '2', '3', '2', '4',  //
+-    '2', '5', '2', '6', '2', '7', '2', '8', '2', '9',  //
+-    '3', '0', '3', '1', '3', '2', '3', '3', '3', '4',  //
+-    '3', '5', '3', '6', '3', '7', '3', '8', '3', '9',  //
+-    '4', '0', '4', '1', '4', '2', '4', '3', '4', '4',  //
+-    '4', '5', '4', '6', '4', '7', '4', '8', '4', '9',  //
+-    '5', '0', '5', '1', '5', '2', '5', '3', '5', '4',  //
+-    '5', '5', '5', '6', '5', '7', '5', '8', '5', '9',  //
+-    '6', '0', '6', '1', '6', '2', '6', '3', '6', '4',  //
+-    '6', '5', '6', '6', '6', '7', '6', '8', '6', '9',  //
+-    '7', '0', '7', '1', '7', '2', '7', '3', '7', '4',  //
+-    '7', '5', '7', '6', '7', '7', '7', '8', '7', '9',  //
+-    '8', '0', '8', '1', '8', '2', '8', '3', '8', '4',  //
+-    '8', '5', '8', '6', '8', '7', '8', '8', '8', '9',  //
+-    '9', '0', '9', '1', '9', '2', '9', '3', '9', '4',  //
+-    '9', '5', '9', '6', '9', '7', '9', '8', '9', '9',  //
+-};
+-
+-static size_t  //
+-wuffs_base__private_implementation__render_number_u64(wuffs_base__slice_u8 dst,
+-                                                      uint64_t x,
+-                                                      uint32_t options,
+-                                                      bool neg) {
+-  uint8_t buf[WUFFS_BASE__U64__BYTE_LENGTH__MAX_INCL];
+-  uint8_t* ptr = &buf[0] + sizeof(buf);
+-
+-  while (x >= 100) {
+-    size_t index = ((size_t)((x % 100) * 2));
+-    x /= 100;
+-    uint8_t s0 = wuffs_base__render_number__first_hundred[index + 0];
+-    uint8_t s1 = wuffs_base__render_number__first_hundred[index + 1];
+-    ptr -= 2;
+-    ptr[0] = s0;
+-    ptr[1] = s1;
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
++wuffs_base__io_transformer__dst_history_retain_length(
++    const wuffs_base__io_transformer* self) {
++  if (!self) {
++    return wuffs_base__utility__make_optional_u63(false, 0u);
+   }
+-
+-  if (x < 10) {
+-    ptr -= 1;
+-    ptr[0] = (uint8_t)('0' + x);
+-  } else {
+-    size_t index = ((size_t)(x * 2));
+-    uint8_t s0 = wuffs_base__render_number__first_hundred[index + 0];
+-    uint8_t s1 = wuffs_base__render_number__first_hundred[index + 1];
+-    ptr -= 2;
+-    ptr[0] = s0;
+-    ptr[1] = s1;
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__make_optional_u63(false, 0u);
+   }
+ 
+-  if (neg) {
+-    ptr -= 1;
+-    ptr[0] = '-';
+-  } else if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) {
+-    ptr -= 1;
+-    ptr[0] = '+';
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
++      const wuffs_base__io_transformer__func_ptrs* func_ptrs =
++          (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->dst_history_retain_length)(self);
++    } else if (v->vtable_name == NULL) {
++      break;
++    }
++    v++;
+   }
+ 
+-  size_t n = sizeof(buf) - ((size_t)(ptr - &buf[0]));
+-  if (n > dst.len) {
++  return wuffs_base__utility__make_optional_u63(false, 0u);
++}
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_base__io_transformer__get_quirk(
++    const wuffs_base__io_transformer* self,
++    uint32_t a_key) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+     return 0;
+   }
+-  memcpy(dst.ptr + ((options & WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT)
+-                        ? (dst.len - n)
+-                        : 0),
+-         ptr, n);
+-  return n;
+-}
+ 
+-WUFFS_BASE__MAYBE_STATIC size_t  //
+-wuffs_base__render_number_i64(wuffs_base__slice_u8 dst,
+-                              int64_t x,
+-                              uint32_t options) {
+-  uint64_t u = (uint64_t)x;
+-  bool neg = x < 0;
+-  if (neg) {
+-    u = 1 + ~u;
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
++      const wuffs_base__io_transformer__func_ptrs* func_ptrs =
++          (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->get_quirk)(self, a_key);
++    } else if (v->vtable_name == NULL) {
++      break;
++    }
++    v++;
+   }
+-  return wuffs_base__private_implementation__render_number_u64(dst, u, options,
+-                                                               neg);
+-}
+ 
+-WUFFS_BASE__MAYBE_STATIC size_t  //
+-wuffs_base__render_number_u64(wuffs_base__slice_u8 dst,
+-                              uint64_t x,
+-                              uint32_t options) {
+-  return wuffs_base__private_implementation__render_number_u64(dst, x, options,
+-                                                               false);
++  return 0;
+ }
+ 
+-// ---------------- Base-16
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_base__io_transformer__set_quirk(
++    wuffs_base__io_transformer* self,
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++            ? wuffs_base__error__disabled_by_previous_error
++            : wuffs_base__error__initialize_not_called);
++  }
+ 
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
+-wuffs_base__base_16__decode2(wuffs_base__slice_u8 dst,
+-                             wuffs_base__slice_u8 src,
+-                             bool src_closed,
+-                             uint32_t options) {
+-  wuffs_base__transform__output o;
+-  size_t src_len2 = src.len / 2;
+-  size_t len;
+-  if (dst.len < src_len2) {
+-    len = dst.len;
+-    o.status.repr = wuffs_base__suspension__short_write;
+-  } else {
+-    len = src_len2;
+-    if (!src_closed) {
+-      o.status.repr = wuffs_base__suspension__short_read;
+-    } else if (src.len & 1) {
+-      o.status.repr = wuffs_base__error__bad_data;
+-    } else {
+-      o.status.repr = NULL;
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
++      const wuffs_base__io_transformer__func_ptrs* func_ptrs =
++          (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->set_quirk)(self, a_key, a_value);
++    } else if (v->vtable_name == NULL) {
++      break;
+     }
++    v++;
+   }
+ 
+-  uint8_t* d = dst.ptr;
+-  uint8_t* s = src.ptr;
+-  size_t n = len;
++  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
++}
+ 
+-  while (n--) {
+-    *d = (uint8_t)((wuffs_base__parse_number__hexadecimal_digits[s[0]] << 4) |
+-                   (wuffs_base__parse_number__hexadecimal_digits[s[1]] & 0x0F));
+-    d += 1;
+-    s += 2;
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_base__io_transformer__transform_io(
++    wuffs_base__io_transformer* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++            ? wuffs_base__error__disabled_by_previous_error
++            : wuffs_base__error__initialize_not_called);
+   }
+ 
+-  o.num_dst = len;
+-  o.num_src = len * 2;
+-  return o;
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
++      const wuffs_base__io_transformer__func_ptrs* func_ptrs =
++          (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->transform_io)(self, a_dst, a_src, a_workbuf);
++    } else if (v->vtable_name == NULL) {
++      break;
++    }
++    v++;
++  }
++
++  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
+ }
+ 
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
+-wuffs_base__base_16__decode4(wuffs_base__slice_u8 dst,
+-                             wuffs_base__slice_u8 src,
+-                             bool src_closed,
+-                             uint32_t options) {
+-  wuffs_base__transform__output o;
+-  size_t src_len4 = src.len / 4;
+-  size_t len = dst.len < src_len4 ? dst.len : src_len4;
+-  if (dst.len < src_len4) {
+-    len = dst.len;
+-    o.status.repr = wuffs_base__suspension__short_write;
+-  } else {
+-    len = src_len4;
+-    if (!src_closed) {
+-      o.status.repr = wuffs_base__suspension__short_read;
+-    } else if (src.len & 1) {
+-      o.status.repr = wuffs_base__error__bad_data;
+-    } else {
+-      o.status.repr = NULL;
+-    }
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_base__io_transformer__workbuf_len(
++    const wuffs_base__io_transformer* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_range_ii_u64();
+   }
+ 
+-  uint8_t* d = dst.ptr;
+-  uint8_t* s = src.ptr;
+-  size_t n = len;
+-
+-  while (n--) {
+-    *d = (uint8_t)((wuffs_base__parse_number__hexadecimal_digits[s[2]] << 4) |
+-                   (wuffs_base__parse_number__hexadecimal_digits[s[3]] & 0x0F));
+-    d += 1;
+-    s += 4;
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
++      const wuffs_base__io_transformer__func_ptrs* func_ptrs =
++          (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->workbuf_len)(self);
++    } else if (v->vtable_name == NULL) {
++      break;
++    }
++    v++;
+   }
+ 
+-  o.num_dst = len;
+-  o.num_src = len * 4;
+-  return o;
++  return wuffs_base__utility__empty_range_ii_u64();
+ }
+ 
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
+-wuffs_base__base_16__encode2(wuffs_base__slice_u8 dst,
+-                             wuffs_base__slice_u8 src,
+-                             bool src_closed,
+-                             uint32_t options) {
+-  wuffs_base__transform__output o;
+-  size_t dst_len2 = dst.len / 2;
+-  size_t len;
+-  if (dst_len2 < src.len) {
+-    len = dst_len2;
+-    o.status.repr = wuffs_base__suspension__short_write;
+-  } else {
+-    len = src.len;
+-    if (!src_closed) {
+-      o.status.repr = wuffs_base__suspension__short_read;
+-    } else {
+-      o.status.repr = NULL;
+-    }
+-  }
++// --------
+ 
+-  uint8_t* d = dst.ptr;
+-  uint8_t* s = src.ptr;
+-  size_t n = len;
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_base__token_decoder__decode_tokens(
++    wuffs_base__token_decoder* self,
++    wuffs_base__token_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++            ? wuffs_base__error__disabled_by_previous_error
++            : wuffs_base__error__initialize_not_called);
++  }
+ 
+-  while (n--) {
+-    uint8_t c = *s;
+-    d[0] = wuffs_base__private_implementation__encode_base16[c >> 4];
+-    d[1] = wuffs_base__private_implementation__encode_base16[c & 0x0F];
+-    d += 2;
+-    s += 1;
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__token_decoder__vtable_name) {
++      const wuffs_base__token_decoder__func_ptrs* func_ptrs =
++          (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->decode_tokens)(self, a_dst, a_src, a_workbuf);
++    } else if (v->vtable_name == NULL) {
++      break;
++    }
++    v++;
+   }
+ 
+-  o.num_dst = len * 2;
+-  o.num_src = len;
+-  return o;
++  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
+ }
+ 
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
+-wuffs_base__base_16__encode4(wuffs_base__slice_u8 dst,
+-                             wuffs_base__slice_u8 src,
+-                             bool src_closed,
+-                             uint32_t options) {
+-  wuffs_base__transform__output o;
+-  size_t dst_len4 = dst.len / 4;
+-  size_t len;
+-  if (dst_len4 < src.len) {
+-    len = dst_len4;
+-    o.status.repr = wuffs_base__suspension__short_write;
+-  } else {
+-    len = src.len;
+-    if (!src_closed) {
+-      o.status.repr = wuffs_base__suspension__short_read;
+-    } else {
+-      o.status.repr = NULL;
+-    }
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_base__token_decoder__get_quirk(
++    const wuffs_base__token_decoder* self,
++    uint32_t a_key) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
+   }
+ 
+-  uint8_t* d = dst.ptr;
+-  uint8_t* s = src.ptr;
+-  size_t n = len;
+-
+-  while (n--) {
+-    uint8_t c = *s;
+-    d[0] = '\\';
+-    d[1] = 'x';
+-    d[2] = wuffs_base__private_implementation__encode_base16[c >> 4];
+-    d[3] = wuffs_base__private_implementation__encode_base16[c & 0x0F];
+-    d += 4;
+-    s += 1;
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__token_decoder__vtable_name) {
++      const wuffs_base__token_decoder__func_ptrs* func_ptrs =
++          (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->get_quirk)(self, a_key);
++    } else if (v->vtable_name == NULL) {
++      break;
++    }
++    v++;
+   }
+ 
+-  o.num_dst = len * 4;
+-  o.num_src = len;
+-  return o;
++  return 0;
+ }
+ 
+-// ---------------- Base-64
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_base__token_decoder__set_quirk(
++    wuffs_base__token_decoder* self,
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++            ? wuffs_base__error__disabled_by_previous_error
++            : wuffs_base__error__initialize_not_called);
++  }
+ 
+-// The two base-64 alphabets, std and url, differ only in the last two codes.
+-//  - std: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
+-//  - url: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_"
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__token_decoder__vtable_name) {
++      const wuffs_base__token_decoder__func_ptrs* func_ptrs =
++          (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->set_quirk)(self, a_key, a_value);
++    } else if (v->vtable_name == NULL) {
++      break;
++    }
++    v++;
++  }
+ 
+-static const uint8_t wuffs_base__base_64__decode_std[256] = {
+-    // 0     1     2     3     4     5     6     7
+-    // 8     9     A     B     C     D     E     F
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x00 ..= 0x07.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x08 ..= 0x0F.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x10 ..= 0x17.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x18 ..= 0x1F.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x20 ..= 0x27.
+-    0x80, 0x80, 0x80, 0x3E, 0x80, 0x80, 0x80, 0x3F,  // 0x28 ..= 0x2F.
+-    0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B,  // 0x30 ..= 0x37.
+-    0x3C, 0x3D, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x38 ..= 0x3F.
++  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
++}
+ 
+-    0x80, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,  // 0x40 ..= 0x47.
+-    0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E,  // 0x48 ..= 0x4F.
+-    0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,  // 0x50 ..= 0x57.
+-    0x17, 0x18, 0x19, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x58 ..= 0x5F.
+-    0x80, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20,  // 0x60 ..= 0x67.
+-    0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,  // 0x68 ..= 0x6F.
+-    0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30,  // 0x70 ..= 0x77.
+-    0x31, 0x32, 0x33, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x78 ..= 0x7F.
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_base__token_decoder__workbuf_len(
++    const wuffs_base__token_decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
+ 
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x80 ..= 0x87.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x88 ..= 0x8F.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x90 ..= 0x97.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x98 ..= 0x9F.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xA0 ..= 0xA7.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xA8 ..= 0xAF.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xB0 ..= 0xB7.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xB8 ..= 0xBF.
++  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
++  int i;
++  for (i = 0; i < 63; i++) {
++    if (v->vtable_name == wuffs_base__token_decoder__vtable_name) {
++      const wuffs_base__token_decoder__func_ptrs* func_ptrs =
++          (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers);
++      return (*func_ptrs->workbuf_len)(self);
++    } else if (v->vtable_name == NULL) {
++      break;
++    }
++    v++;
++  }
+ 
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xC0 ..= 0xC7.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xC8 ..= 0xCF.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xD0 ..= 0xD7.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xD8 ..= 0xDF.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xE0 ..= 0xE7.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xE8 ..= 0xEF.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xF0 ..= 0xF7.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xF8 ..= 0xFF.
+-    // 0     1     2     3     4     5     6     7
+-    // 8     9     A     B     C     D     E     F
+-};
++  return wuffs_base__utility__empty_range_ii_u64();
++}
+ 
+-static const uint8_t wuffs_base__base_64__decode_url[256] = {
+-    // 0     1     2     3     4     5     6     7
+-    // 8     9     A     B     C     D     E     F
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x00 ..= 0x07.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x08 ..= 0x0F.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x10 ..= 0x17.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x18 ..= 0x1F.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x20 ..= 0x27.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x3E, 0x80, 0x80,  // 0x28 ..= 0x2F.
+-    0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B,  // 0x30 ..= 0x37.
+-    0x3C, 0x3D, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x38 ..= 0x3F.
++#endif  // !defined(WUFFS_CONFIG__MODULES) ||
++        // defined(WUFFS_CONFIG__MODULE__BASE) ||
++        // defined(WUFFS_CONFIG__MODULE__BASE__INTERFACES)
+ 
+-    0x80, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,  // 0x40 ..= 0x47.
+-    0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E,  // 0x48 ..= 0x4F.
+-    0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,  // 0x50 ..= 0x57.
+-    0x17, 0x18, 0x19, 0x80, 0x80, 0x80, 0x80, 0x3F,  // 0x58 ..= 0x5F.
+-    0x80, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20,  // 0x60 ..= 0x67.
+-    0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,  // 0x68 ..= 0x6F.
+-    0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30,  // 0x70 ..= 0x77.
+-    0x31, 0x32, 0x33, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x78 ..= 0x7F.
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
++    defined(WUFFS_CONFIG__MODULE__BASE__FLOATCONV)
+ 
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x80 ..= 0x87.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x88 ..= 0x8F.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x90 ..= 0x97.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x98 ..= 0x9F.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xA0 ..= 0xA7.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xA8 ..= 0xAF.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xB0 ..= 0xB7.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xB8 ..= 0xBF.
++// ---------------- IEEE 754 Floating Point
+ 
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xC0 ..= 0xC7.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xC8 ..= 0xCF.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xD0 ..= 0xD7.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xD8 ..= 0xDF.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xE0 ..= 0xE7.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xE8 ..= 0xEF.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xF0 ..= 0xF7.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xF8 ..= 0xFF.
+-    // 0     1     2     3     4     5     6     7
+-    // 8     9     A     B     C     D     E     F
++// The etc__hpd_left_shift and etc__powers_of_5 tables were printed by
++// script/print-hpd-left-shift.go. That script has an optional -comments flag,
++// whose output is not copied here, which prints further detail.
++//
++// These tables are used in
++// wuffs_private_impl__high_prec_dec__lshift_num_new_digits.
++
++// wuffs_private_impl__hpd_left_shift[i] encodes the number of new digits
++// created after multiplying a positive integer by (1 << i): the additional
++// length in the decimal representation. For example, shifting "234" by 3
++// (equivalent to multiplying by 8) will produce "1872". Going from a 3-length
++// string to a 4-length string means that 1 new digit was added (and existing
++// digits may have changed).
++//
++// Shifting by i can add either N or N-1 new digits, depending on whether the
++// original positive integer compares >= or < to the i'th power of 5 (as 10
++// equals 2 * 5). Comparison is lexicographic, not numerical.
++//
++// For example, shifting by 4 (i.e. multiplying by 16) can add 1 or 2 new
++// digits, depending on a lexicographic comparison to (5 ** 4), i.e. "625":
++//  - ("1"      << 4) is "16",       which adds 1 new digit.
++//  - ("5678"   << 4) is "90848",    which adds 1 new digit.
++//  - ("624"    << 4) is "9984",     which adds 1 new digit.
++//  - ("62498"  << 4) is "999968",   which adds 1 new digit.
++//  - ("625"    << 4) is "10000",    which adds 2 new digits.
++//  - ("625001" << 4) is "10000016", which adds 2 new digits.
++//  - ("7008"   << 4) is "112128",   which adds 2 new digits.
++//  - ("99"     << 4) is "1584",     which adds 2 new digits.
++//
++// Thus, when i is 4, N is 2 and (5 ** i) is "625". This etc__hpd_left_shift
++// array encodes this as:
++//  - etc__hpd_left_shift[4] is 0x1006 = (2 << 11) | 0x0006.
++//  - etc__hpd_left_shift[5] is 0x1009 = (? << 11) | 0x0009.
++// where the ? isn't relevant for i == 4.
++//
++// The high 5 bits of etc__hpd_left_shift[i] is N, the higher of the two
++// possible number of new digits. The low 11 bits are an offset into the
++// etc__powers_of_5 array (of length 0x051C, so offsets fit in 11 bits). When i
++// is 4, its offset and the next one is 6 and 9, and etc__powers_of_5[6 .. 9]
++// is the string "\x06\x02\x05", so the relevant power of 5 is "625".
++//
++// Thanks to Ken Thompson for the original idea.
++static const uint16_t wuffs_private_impl__hpd_left_shift[65] = {
++    0x0000, 0x0800, 0x0801, 0x0803, 0x1006, 0x1009, 0x100D, 0x1812, 0x1817,
++    0x181D, 0x2024, 0x202B, 0x2033, 0x203C, 0x2846, 0x2850, 0x285B, 0x3067,
++    0x3073, 0x3080, 0x388E, 0x389C, 0x38AB, 0x38BB, 0x40CC, 0x40DD, 0x40EF,
++    0x4902, 0x4915, 0x4929, 0x513E, 0x5153, 0x5169, 0x5180, 0x5998, 0x59B0,
++    0x59C9, 0x61E3, 0x61FD, 0x6218, 0x6A34, 0x6A50, 0x6A6D, 0x6A8B, 0x72AA,
++    0x72C9, 0x72E9, 0x7B0A, 0x7B2B, 0x7B4D, 0x8370, 0x8393, 0x83B7, 0x83DC,
++    0x8C02, 0x8C28, 0x8C4F, 0x9477, 0x949F, 0x94C8, 0x9CF2, 0x051C, 0x051C,
++    0x051C, 0x051C,
+ };
+ 
+-static const uint8_t wuffs_base__base_64__encode_std[64] = {
+-    // 0     1     2     3     4     5     6     7
+-    // 8     9     A     B     C     D     E     F
+-    0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,  // 0x00 ..= 0x07.
+-    0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50,  // 0x08 ..= 0x0F.
+-    0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,  // 0x10 ..= 0x17.
+-    0x59, 0x5A, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66,  // 0x18 ..= 0x1F.
+-    0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E,  // 0x20 ..= 0x27.
+-    0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76,  // 0x28 ..= 0x2F.
+-    0x77, 0x78, 0x79, 0x7A, 0x30, 0x31, 0x32, 0x33,  // 0x30 ..= 0x37.
+-    0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x2B, 0x2F,  // 0x38 ..= 0x3F.
++// wuffs_private_impl__powers_of_5 contains the powers of 5, concatenated
++// together: "5", "25", "125", "625", "3125", etc.
++static const uint8_t wuffs_private_impl__powers_of_5[0x051C] = {
++    5, 2, 5, 1, 2, 5, 6, 2, 5, 3, 1, 2, 5, 1, 5, 6, 2, 5, 7, 8, 1, 2, 5, 3, 9,
++    0, 6, 2, 5, 1, 9, 5, 3, 1, 2, 5, 9, 7, 6, 5, 6, 2, 5, 4, 8, 8, 2, 8, 1, 2,
++    5, 2, 4, 4, 1, 4, 0, 6, 2, 5, 1, 2, 2, 0, 7, 0, 3, 1, 2, 5, 6, 1, 0, 3, 5,
++    1, 5, 6, 2, 5, 3, 0, 5, 1, 7, 5, 7, 8, 1, 2, 5, 1, 5, 2, 5, 8, 7, 8, 9, 0,
++    6, 2, 5, 7, 6, 2, 9, 3, 9, 4, 5, 3, 1, 2, 5, 3, 8, 1, 4, 6, 9, 7, 2, 6, 5,
++    6, 2, 5, 1, 9, 0, 7, 3, 4, 8, 6, 3, 2, 8, 1, 2, 5, 9, 5, 3, 6, 7, 4, 3, 1,
++    6, 4, 0, 6, 2, 5, 4, 7, 6, 8, 3, 7, 1, 5, 8, 2, 0, 3, 1, 2, 5, 2, 3, 8, 4,
++    1, 8, 5, 7, 9, 1, 0, 1, 5, 6, 2, 5, 1, 1, 9, 2, 0, 9, 2, 8, 9, 5, 5, 0, 7,
++    8, 1, 2, 5, 5, 9, 6, 0, 4, 6, 4, 4, 7, 7, 5, 3, 9, 0, 6, 2, 5, 2, 9, 8, 0,
++    2, 3, 2, 2, 3, 8, 7, 6, 9, 5, 3, 1, 2, 5, 1, 4, 9, 0, 1, 1, 6, 1, 1, 9, 3,
++    8, 4, 7, 6, 5, 6, 2, 5, 7, 4, 5, 0, 5, 8, 0, 5, 9, 6, 9, 2, 3, 8, 2, 8, 1,
++    2, 5, 3, 7, 2, 5, 2, 9, 0, 2, 9, 8, 4, 6, 1, 9, 1, 4, 0, 6, 2, 5, 1, 8, 6,
++    2, 6, 4, 5, 1, 4, 9, 2, 3, 0, 9, 5, 7, 0, 3, 1, 2, 5, 9, 3, 1, 3, 2, 2, 5,
++    7, 4, 6, 1, 5, 4, 7, 8, 5, 1, 5, 6, 2, 5, 4, 6, 5, 6, 6, 1, 2, 8, 7, 3, 0,
++    7, 7, 3, 9, 2, 5, 7, 8, 1, 2, 5, 2, 3, 2, 8, 3, 0, 6, 4, 3, 6, 5, 3, 8, 6,
++    9, 6, 2, 8, 9, 0, 6, 2, 5, 1, 1, 6, 4, 1, 5, 3, 2, 1, 8, 2, 6, 9, 3, 4, 8,
++    1, 4, 4, 5, 3, 1, 2, 5, 5, 8, 2, 0, 7, 6, 6, 0, 9, 1, 3, 4, 6, 7, 4, 0, 7,
++    2, 2, 6, 5, 6, 2, 5, 2, 9, 1, 0, 3, 8, 3, 0, 4, 5, 6, 7, 3, 3, 7, 0, 3, 6,
++    1, 3, 2, 8, 1, 2, 5, 1, 4, 5, 5, 1, 9, 1, 5, 2, 2, 8, 3, 6, 6, 8, 5, 1, 8,
++    0, 6, 6, 4, 0, 6, 2, 5, 7, 2, 7, 5, 9, 5, 7, 6, 1, 4, 1, 8, 3, 4, 2, 5, 9,
++    0, 3, 3, 2, 0, 3, 1, 2, 5, 3, 6, 3, 7, 9, 7, 8, 8, 0, 7, 0, 9, 1, 7, 1, 2,
++    9, 5, 1, 6, 6, 0, 1, 5, 6, 2, 5, 1, 8, 1, 8, 9, 8, 9, 4, 0, 3, 5, 4, 5, 8,
++    5, 6, 4, 7, 5, 8, 3, 0, 0, 7, 8, 1, 2, 5, 9, 0, 9, 4, 9, 4, 7, 0, 1, 7, 7,
++    2, 9, 2, 8, 2, 3, 7, 9, 1, 5, 0, 3, 9, 0, 6, 2, 5, 4, 5, 4, 7, 4, 7, 3, 5,
++    0, 8, 8, 6, 4, 6, 4, 1, 1, 8, 9, 5, 7, 5, 1, 9, 5, 3, 1, 2, 5, 2, 2, 7, 3,
++    7, 3, 6, 7, 5, 4, 4, 3, 2, 3, 2, 0, 5, 9, 4, 7, 8, 7, 5, 9, 7, 6, 5, 6, 2,
++    5, 1, 1, 3, 6, 8, 6, 8, 3, 7, 7, 2, 1, 6, 1, 6, 0, 2, 9, 7, 3, 9, 3, 7, 9,
++    8, 8, 2, 8, 1, 2, 5, 5, 6, 8, 4, 3, 4, 1, 8, 8, 6, 0, 8, 0, 8, 0, 1, 4, 8,
++    6, 9, 6, 8, 9, 9, 4, 1, 4, 0, 6, 2, 5, 2, 8, 4, 2, 1, 7, 0, 9, 4, 3, 0, 4,
++    0, 4, 0, 0, 7, 4, 3, 4, 8, 4, 4, 9, 7, 0, 7, 0, 3, 1, 2, 5, 1, 4, 2, 1, 0,
++    8, 5, 4, 7, 1, 5, 2, 0, 2, 0, 0, 3, 7, 1, 7, 4, 2, 2, 4, 8, 5, 3, 5, 1, 5,
++    6, 2, 5, 7, 1, 0, 5, 4, 2, 7, 3, 5, 7, 6, 0, 1, 0, 0, 1, 8, 5, 8, 7, 1, 1,
++    2, 4, 2, 6, 7, 5, 7, 8, 1, 2, 5, 3, 5, 5, 2, 7, 1, 3, 6, 7, 8, 8, 0, 0, 5,
++    0, 0, 9, 2, 9, 3, 5, 5, 6, 2, 1, 3, 3, 7, 8, 9, 0, 6, 2, 5, 1, 7, 7, 6, 3,
++    5, 6, 8, 3, 9, 4, 0, 0, 2, 5, 0, 4, 6, 4, 6, 7, 7, 8, 1, 0, 6, 6, 8, 9, 4,
++    5, 3, 1, 2, 5, 8, 8, 8, 1, 7, 8, 4, 1, 9, 7, 0, 0, 1, 2, 5, 2, 3, 2, 3, 3,
++    8, 9, 0, 5, 3, 3, 4, 4, 7, 2, 6, 5, 6, 2, 5, 4, 4, 4, 0, 8, 9, 2, 0, 9, 8,
++    5, 0, 0, 6, 2, 6, 1, 6, 1, 6, 9, 4, 5, 2, 6, 6, 7, 2, 3, 6, 3, 2, 8, 1, 2,
++    5, 2, 2, 2, 0, 4, 4, 6, 0, 4, 9, 2, 5, 0, 3, 1, 3, 0, 8, 0, 8, 4, 7, 2, 6,
++    3, 3, 3, 6, 1, 8, 1, 6, 4, 0, 6, 2, 5, 1, 1, 1, 0, 2, 2, 3, 0, 2, 4, 6, 2,
++    5, 1, 5, 6, 5, 4, 0, 4, 2, 3, 6, 3, 1, 6, 6, 8, 0, 9, 0, 8, 2, 0, 3, 1, 2,
++    5, 5, 5, 5, 1, 1, 1, 5, 1, 2, 3, 1, 2, 5, 7, 8, 2, 7, 0, 2, 1, 1, 8, 1, 5,
++    8, 3, 4, 0, 4, 5, 4, 1, 0, 1, 5, 6, 2, 5, 2, 7, 7, 5, 5, 5, 7, 5, 6, 1, 5,
++    6, 2, 8, 9, 1, 3, 5, 1, 0, 5, 9, 0, 7, 9, 1, 7, 0, 2, 2, 7, 0, 5, 0, 7, 8,
++    1, 2, 5, 1, 3, 8, 7, 7, 7, 8, 7, 8, 0, 7, 8, 1, 4, 4, 5, 6, 7, 5, 5, 2, 9,
++    5, 3, 9, 5, 8, 5, 1, 1, 3, 5, 2, 5, 3, 9, 0, 6, 2, 5, 6, 9, 3, 8, 8, 9, 3,
++    9, 0, 3, 9, 0, 7, 2, 2, 8, 3, 7, 7, 6, 4, 7, 6, 9, 7, 9, 2, 5, 5, 6, 7, 6,
++    2, 6, 9, 5, 3, 1, 2, 5, 3, 4, 6, 9, 4, 4, 6, 9, 5, 1, 9, 5, 3, 6, 1, 4, 1,
++    8, 8, 8, 2, 3, 8, 4, 8, 9, 6, 2, 7, 8, 3, 8, 1, 3, 4, 7, 6, 5, 6, 2, 5, 1,
++    7, 3, 4, 7, 2, 3, 4, 7, 5, 9, 7, 6, 8, 0, 7, 0, 9, 4, 4, 1, 1, 9, 2, 4, 4,
++    8, 1, 3, 9, 1, 9, 0, 6, 7, 3, 8, 2, 8, 1, 2, 5, 8, 6, 7, 3, 6, 1, 7, 3, 7,
++    9, 8, 8, 4, 0, 3, 5, 4, 7, 2, 0, 5, 9, 6, 2, 2, 4, 0, 6, 9, 5, 9, 5, 3, 3,
++    6, 9, 1, 4, 0, 6, 2, 5,
+ };
+ 
+-static const uint8_t wuffs_base__base_64__encode_url[64] = {
+-    // 0     1     2     3     4     5     6     7
+-    // 8     9     A     B     C     D     E     F
+-    0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,  // 0x00 ..= 0x07.
+-    0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50,  // 0x08 ..= 0x0F.
+-    0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,  // 0x10 ..= 0x17.
+-    0x59, 0x5A, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66,  // 0x18 ..= 0x1F.
+-    0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E,  // 0x20 ..= 0x27.
+-    0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76,  // 0x28 ..= 0x2F.
+-    0x77, 0x78, 0x79, 0x7A, 0x30, 0x31, 0x32, 0x33,  // 0x30 ..= 0x37.
+-    0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x2D, 0x5F,  // 0x38 ..= 0x3F.
++// --------
++
++// wuffs_private_impl__powers_of_10 contains truncated approximations to the
++// powers of 10, ranging from 1e-307 to 1e+288 inclusive, as 596 pairs of
++// uint64_t values (a 128-bit mantissa).
++//
++// There's also an implicit third column (implied by a linear formula involving
++// the base-10 exponent) that is the base-2 exponent, biased by a magic
++// constant. That constant (1214 or 0x04BE) equals 1023 + 191. 1023 is the bias
++// for IEEE 754 double-precision floating point. 191 is ((3 * 64) - 1) and
++// wuffs_private_impl__parse_number_f64_eisel_lemire works with
++// multiples-of-64-bit mantissas.
++//
++// For example, the third row holds the approximation to 1e-305:
++//   0xE0B62E29_29ABA83C_331ACDAB_FE94DE87 * (2 ** (0x0049 - 0x04BE))
++//
++// Similarly, 1e+4 is approximated by:
++//   0x9C400000_00000000_00000000_00000000 * (2 ** (0x044C - 0x04BE))
++//
++// Similarly, 1e+68 is approximated by:
++//   0xED63A231_D4C4FB27_4CA7AAA8_63EE4BDD * (2 ** (0x0520 - 0x04BE))
++//
++// This table was generated by by script/print-mpb-powers-of-10.go
++static const uint64_t wuffs_private_impl__powers_of_10[596][2] = {
++    {0xA5D3B6D479F8E056, 0x8FD0C16206306BAB},  // 1e-307
++    {0x8F48A4899877186C, 0xB3C4F1BA87BC8696},  // 1e-306
++    {0x331ACDABFE94DE87, 0xE0B62E2929ABA83C},  // 1e-305
++    {0x9FF0C08B7F1D0B14, 0x8C71DCD9BA0B4925},  // 1e-304
++    {0x07ECF0AE5EE44DD9, 0xAF8E5410288E1B6F},  // 1e-303
++    {0xC9E82CD9F69D6150, 0xDB71E91432B1A24A},  // 1e-302
++    {0xBE311C083A225CD2, 0x892731AC9FAF056E},  // 1e-301
++    {0x6DBD630A48AAF406, 0xAB70FE17C79AC6CA},  // 1e-300
++    {0x092CBBCCDAD5B108, 0xD64D3D9DB981787D},  // 1e-299
++    {0x25BBF56008C58EA5, 0x85F0468293F0EB4E},  // 1e-298
++    {0xAF2AF2B80AF6F24E, 0xA76C582338ED2621},  // 1e-297
++    {0x1AF5AF660DB4AEE1, 0xD1476E2C07286FAA},  // 1e-296
++    {0x50D98D9FC890ED4D, 0x82CCA4DB847945CA},  // 1e-295
++    {0xE50FF107BAB528A0, 0xA37FCE126597973C},  // 1e-294
++    {0x1E53ED49A96272C8, 0xCC5FC196FEFD7D0C},  // 1e-293
++    {0x25E8E89C13BB0F7A, 0xFF77B1FCBEBCDC4F},  // 1e-292
++    {0x77B191618C54E9AC, 0x9FAACF3DF73609B1},  // 1e-291
++    {0xD59DF5B9EF6A2417, 0xC795830D75038C1D},  // 1e-290
++    {0x4B0573286B44AD1D, 0xF97AE3D0D2446F25},  // 1e-289
++    {0x4EE367F9430AEC32, 0x9BECCE62836AC577},  // 1e-288
++    {0x229C41F793CDA73F, 0xC2E801FB244576D5},  // 1e-287
++    {0x6B43527578C1110F, 0xF3A20279ED56D48A},  // 1e-286
++    {0x830A13896B78AAA9, 0x9845418C345644D6},  // 1e-285
++    {0x23CC986BC656D553, 0xBE5691EF416BD60C},  // 1e-284
++    {0x2CBFBE86B7EC8AA8, 0xEDEC366B11C6CB8F},  // 1e-283
++    {0x7BF7D71432F3D6A9, 0x94B3A202EB1C3F39},  // 1e-282
++    {0xDAF5CCD93FB0CC53, 0xB9E08A83A5E34F07},  // 1e-281
++    {0xD1B3400F8F9CFF68, 0xE858AD248F5C22C9},  // 1e-280
++    {0x23100809B9C21FA1, 0x91376C36D99995BE},  // 1e-279
++    {0xABD40A0C2832A78A, 0xB58547448FFFFB2D},  // 1e-278
++    {0x16C90C8F323F516C, 0xE2E69915B3FFF9F9},  // 1e-277
++    {0xAE3DA7D97F6792E3, 0x8DD01FAD907FFC3B},  // 1e-276
++    {0x99CD11CFDF41779C, 0xB1442798F49FFB4A},  // 1e-275
++    {0x40405643D711D583, 0xDD95317F31C7FA1D},  // 1e-274
++    {0x482835EA666B2572, 0x8A7D3EEF7F1CFC52},  // 1e-273
++    {0xDA3243650005EECF, 0xAD1C8EAB5EE43B66},  // 1e-272
++    {0x90BED43E40076A82, 0xD863B256369D4A40},  // 1e-271
++    {0x5A7744A6E804A291, 0x873E4F75E2224E68},  // 1e-270
++    {0x711515D0A205CB36, 0xA90DE3535AAAE202},  // 1e-269
++    {0x0D5A5B44CA873E03, 0xD3515C2831559A83},  // 1e-268
++    {0xE858790AFE9486C2, 0x8412D9991ED58091},  // 1e-267
++    {0x626E974DBE39A872, 0xA5178FFF668AE0B6},  // 1e-266
++    {0xFB0A3D212DC8128F, 0xCE5D73FF402D98E3},  // 1e-265
++    {0x7CE66634BC9D0B99, 0x80FA687F881C7F8E},  // 1e-264
++    {0x1C1FFFC1EBC44E80, 0xA139029F6A239F72},  // 1e-263
++    {0xA327FFB266B56220, 0xC987434744AC874E},  // 1e-262
++    {0x4BF1FF9F0062BAA8, 0xFBE9141915D7A922},  // 1e-261
++    {0x6F773FC3603DB4A9, 0x9D71AC8FADA6C9B5},  // 1e-260
++    {0xCB550FB4384D21D3, 0xC4CE17B399107C22},  // 1e-259
++    {0x7E2A53A146606A48, 0xF6019DA07F549B2B},  // 1e-258
++    {0x2EDA7444CBFC426D, 0x99C102844F94E0FB},  // 1e-257
++    {0xFA911155FEFB5308, 0xC0314325637A1939},  // 1e-256
++    {0x793555AB7EBA27CA, 0xF03D93EEBC589F88},  // 1e-255
++    {0x4BC1558B2F3458DE, 0x96267C7535B763B5},  // 1e-254
++    {0x9EB1AAEDFB016F16, 0xBBB01B9283253CA2},  // 1e-253
++    {0x465E15A979C1CADC, 0xEA9C227723EE8BCB},  // 1e-252
++    {0x0BFACD89EC191EC9, 0x92A1958A7675175F},  // 1e-251
++    {0xCEF980EC671F667B, 0xB749FAED14125D36},  // 1e-250
++    {0x82B7E12780E7401A, 0xE51C79A85916F484},  // 1e-249
++    {0xD1B2ECB8B0908810, 0x8F31CC0937AE58D2},  // 1e-248
++    {0x861FA7E6DCB4AA15, 0xB2FE3F0B8599EF07},  // 1e-247
++    {0x67A791E093E1D49A, 0xDFBDCECE67006AC9},  // 1e-246
++    {0xE0C8BB2C5C6D24E0, 0x8BD6A141006042BD},  // 1e-245
++    {0x58FAE9F773886E18, 0xAECC49914078536D},  // 1e-244
++    {0xAF39A475506A899E, 0xDA7F5BF590966848},  // 1e-243
++    {0x6D8406C952429603, 0x888F99797A5E012D},  // 1e-242
++    {0xC8E5087BA6D33B83, 0xAAB37FD7D8F58178},  // 1e-241
++    {0xFB1E4A9A90880A64, 0xD5605FCDCF32E1D6},  // 1e-240
++    {0x5CF2EEA09A55067F, 0x855C3BE0A17FCD26},  // 1e-239
++    {0xF42FAA48C0EA481E, 0xA6B34AD8C9DFC06F},  // 1e-238
++    {0xF13B94DAF124DA26, 0xD0601D8EFC57B08B},  // 1e-237
++    {0x76C53D08D6B70858, 0x823C12795DB6CE57},  // 1e-236
++    {0x54768C4B0C64CA6E, 0xA2CB1717B52481ED},  // 1e-235
++    {0xA9942F5DCF7DFD09, 0xCB7DDCDDA26DA268},  // 1e-234
++    {0xD3F93B35435D7C4C, 0xFE5D54150B090B02},  // 1e-233
++    {0xC47BC5014A1A6DAF, 0x9EFA548D26E5A6E1},  // 1e-232
++    {0x359AB6419CA1091B, 0xC6B8E9B0709F109A},  // 1e-231
++    {0xC30163D203C94B62, 0xF867241C8CC6D4C0},  // 1e-230
++    {0x79E0DE63425DCF1D, 0x9B407691D7FC44F8},  // 1e-229
++    {0x985915FC12F542E4, 0xC21094364DFB5636},  // 1e-228
++    {0x3E6F5B7B17B2939D, 0xF294B943E17A2BC4},  // 1e-227
++    {0xA705992CEECF9C42, 0x979CF3CA6CEC5B5A},  // 1e-226
++    {0x50C6FF782A838353, 0xBD8430BD08277231},  // 1e-225
++    {0xA4F8BF5635246428, 0xECE53CEC4A314EBD},  // 1e-224
++    {0x871B7795E136BE99, 0x940F4613AE5ED136},  // 1e-223
++    {0x28E2557B59846E3F, 0xB913179899F68584},  // 1e-222
++    {0x331AEADA2FE589CF, 0xE757DD7EC07426E5},  // 1e-221
++    {0x3FF0D2C85DEF7621, 0x9096EA6F3848984F},  // 1e-220
++    {0x0FED077A756B53A9, 0xB4BCA50B065ABE63},  // 1e-219
++    {0xD3E8495912C62894, 0xE1EBCE4DC7F16DFB},  // 1e-218
++    {0x64712DD7ABBBD95C, 0x8D3360F09CF6E4BD},  // 1e-217
++    {0xBD8D794D96AACFB3, 0xB080392CC4349DEC},  // 1e-216
++    {0xECF0D7A0FC5583A0, 0xDCA04777F541C567},  // 1e-215
++    {0xF41686C49DB57244, 0x89E42CAAF9491B60},  // 1e-214
++    {0x311C2875C522CED5, 0xAC5D37D5B79B6239},  // 1e-213
++    {0x7D633293366B828B, 0xD77485CB25823AC7},  // 1e-212
++    {0xAE5DFF9C02033197, 0x86A8D39EF77164BC},  // 1e-211
++    {0xD9F57F830283FDFC, 0xA8530886B54DBDEB},  // 1e-210
++    {0xD072DF63C324FD7B, 0xD267CAA862A12D66},  // 1e-209
++    {0x4247CB9E59F71E6D, 0x8380DEA93DA4BC60},  // 1e-208
++    {0x52D9BE85F074E608, 0xA46116538D0DEB78},  // 1e-207
++    {0x67902E276C921F8B, 0xCD795BE870516656},  // 1e-206
++    {0x00BA1CD8A3DB53B6, 0x806BD9714632DFF6},  // 1e-205
++    {0x80E8A40ECCD228A4, 0xA086CFCD97BF97F3},  // 1e-204
++    {0x6122CD128006B2CD, 0xC8A883C0FDAF7DF0},  // 1e-203
++    {0x796B805720085F81, 0xFAD2A4B13D1B5D6C},  // 1e-202
++    {0xCBE3303674053BB0, 0x9CC3A6EEC6311A63},  // 1e-201
++    {0xBEDBFC4411068A9C, 0xC3F490AA77BD60FC},  // 1e-200
++    {0xEE92FB5515482D44, 0xF4F1B4D515ACB93B},  // 1e-199
++    {0x751BDD152D4D1C4A, 0x991711052D8BF3C5},  // 1e-198
++    {0xD262D45A78A0635D, 0xBF5CD54678EEF0B6},  // 1e-197
++    {0x86FB897116C87C34, 0xEF340A98172AACE4},  // 1e-196
++    {0xD45D35E6AE3D4DA0, 0x9580869F0E7AAC0E},  // 1e-195
++    {0x8974836059CCA109, 0xBAE0A846D2195712},  // 1e-194
++    {0x2BD1A438703FC94B, 0xE998D258869FACD7},  // 1e-193
++    {0x7B6306A34627DDCF, 0x91FF83775423CC06},  // 1e-192
++    {0x1A3BC84C17B1D542, 0xB67F6455292CBF08},  // 1e-191
++    {0x20CABA5F1D9E4A93, 0xE41F3D6A7377EECA},  // 1e-190
++    {0x547EB47B7282EE9C, 0x8E938662882AF53E},  // 1e-189
++    {0xE99E619A4F23AA43, 0xB23867FB2A35B28D},  // 1e-188
++    {0x6405FA00E2EC94D4, 0xDEC681F9F4C31F31},  // 1e-187
++    {0xDE83BC408DD3DD04, 0x8B3C113C38F9F37E},  // 1e-186
++    {0x9624AB50B148D445, 0xAE0B158B4738705E},  // 1e-185
++    {0x3BADD624DD9B0957, 0xD98DDAEE19068C76},  // 1e-184
++    {0xE54CA5D70A80E5D6, 0x87F8A8D4CFA417C9},  // 1e-183
++    {0x5E9FCF4CCD211F4C, 0xA9F6D30A038D1DBC},  // 1e-182
++    {0x7647C3200069671F, 0xD47487CC8470652B},  // 1e-181
++    {0x29ECD9F40041E073, 0x84C8D4DFD2C63F3B},  // 1e-180
++    {0xF468107100525890, 0xA5FB0A17C777CF09},  // 1e-179
++    {0x7182148D4066EEB4, 0xCF79CC9DB955C2CC},  // 1e-178
++    {0xC6F14CD848405530, 0x81AC1FE293D599BF},  // 1e-177
++    {0xB8ADA00E5A506A7C, 0xA21727DB38CB002F},  // 1e-176
++    {0xA6D90811F0E4851C, 0xCA9CF1D206FDC03B},  // 1e-175
++    {0x908F4A166D1DA663, 0xFD442E4688BD304A},  // 1e-174
++    {0x9A598E4E043287FE, 0x9E4A9CEC15763E2E},  // 1e-173
++    {0x40EFF1E1853F29FD, 0xC5DD44271AD3CDBA},  // 1e-172
++    {0xD12BEE59E68EF47C, 0xF7549530E188C128},  // 1e-171
++    {0x82BB74F8301958CE, 0x9A94DD3E8CF578B9},  // 1e-170
++    {0xE36A52363C1FAF01, 0xC13A148E3032D6E7},  // 1e-169
++    {0xDC44E6C3CB279AC1, 0xF18899B1BC3F8CA1},  // 1e-168
++    {0x29AB103A5EF8C0B9, 0x96F5600F15A7B7E5},  // 1e-167
++    {0x7415D448F6B6F0E7, 0xBCB2B812DB11A5DE},  // 1e-166
++    {0x111B495B3464AD21, 0xEBDF661791D60F56},  // 1e-165
++    {0xCAB10DD900BEEC34, 0x936B9FCEBB25C995},  // 1e-164
++    {0x3D5D514F40EEA742, 0xB84687C269EF3BFB},  // 1e-163
++    {0x0CB4A5A3112A5112, 0xE65829B3046B0AFA},  // 1e-162
++    {0x47F0E785EABA72AB, 0x8FF71A0FE2C2E6DC},  // 1e-161
++    {0x59ED216765690F56, 0xB3F4E093DB73A093},  // 1e-160
++    {0x306869C13EC3532C, 0xE0F218B8D25088B8},  // 1e-159
++    {0x1E414218C73A13FB, 0x8C974F7383725573},  // 1e-158
++    {0xE5D1929EF90898FA, 0xAFBD2350644EEACF},  // 1e-157
++    {0xDF45F746B74ABF39, 0xDBAC6C247D62A583},  // 1e-156
++    {0x6B8BBA8C328EB783, 0x894BC396CE5DA772},  // 1e-155
++    {0x066EA92F3F326564, 0xAB9EB47C81F5114F},  // 1e-154
++    {0xC80A537B0EFEFEBD, 0xD686619BA27255A2},  // 1e-153
++    {0xBD06742CE95F5F36, 0x8613FD0145877585},  // 1e-152
++    {0x2C48113823B73704, 0xA798FC4196E952E7},  // 1e-151
++    {0xF75A15862CA504C5, 0xD17F3B51FCA3A7A0},  // 1e-150
++    {0x9A984D73DBE722FB, 0x82EF85133DE648C4},  // 1e-149
++    {0xC13E60D0D2E0EBBA, 0xA3AB66580D5FDAF5},  // 1e-148
++    {0x318DF905079926A8, 0xCC963FEE10B7D1B3},  // 1e-147
++    {0xFDF17746497F7052, 0xFFBBCFE994E5C61F},  // 1e-146
++    {0xFEB6EA8BEDEFA633, 0x9FD561F1FD0F9BD3},  // 1e-145
++    {0xFE64A52EE96B8FC0, 0xC7CABA6E7C5382C8},  // 1e-144
++    {0x3DFDCE7AA3C673B0, 0xF9BD690A1B68637B},  // 1e-143
++    {0x06BEA10CA65C084E, 0x9C1661A651213E2D},  // 1e-142
++    {0x486E494FCFF30A62, 0xC31BFA0FE5698DB8},  // 1e-141
++    {0x5A89DBA3C3EFCCFA, 0xF3E2F893DEC3F126},  // 1e-140
++    {0xF89629465A75E01C, 0x986DDB5C6B3A76B7},  // 1e-139
++    {0xF6BBB397F1135823, 0xBE89523386091465},  // 1e-138
++    {0x746AA07DED582E2C, 0xEE2BA6C0678B597F},  // 1e-137
++    {0xA8C2A44EB4571CDC, 0x94DB483840B717EF},  // 1e-136
++    {0x92F34D62616CE413, 0xBA121A4650E4DDEB},  // 1e-135
++    {0x77B020BAF9C81D17, 0xE896A0D7E51E1566},  // 1e-134
++    {0x0ACE1474DC1D122E, 0x915E2486EF32CD60},  // 1e-133
++    {0x0D819992132456BA, 0xB5B5ADA8AAFF80B8},  // 1e-132
++    {0x10E1FFF697ED6C69, 0xE3231912D5BF60E6},  // 1e-131
++    {0xCA8D3FFA1EF463C1, 0x8DF5EFABC5979C8F},  // 1e-130
++    {0xBD308FF8A6B17CB2, 0xB1736B96B6FD83B3},  // 1e-129
++    {0xAC7CB3F6D05DDBDE, 0xDDD0467C64BCE4A0},  // 1e-128
++    {0x6BCDF07A423AA96B, 0x8AA22C0DBEF60EE4},  // 1e-127
++    {0x86C16C98D2C953C6, 0xAD4AB7112EB3929D},  // 1e-126
++    {0xE871C7BF077BA8B7, 0xD89D64D57A607744},  // 1e-125
++    {0x11471CD764AD4972, 0x87625F056C7C4A8B},  // 1e-124
++    {0xD598E40D3DD89BCF, 0xA93AF6C6C79B5D2D},  // 1e-123
++    {0x4AFF1D108D4EC2C3, 0xD389B47879823479},  // 1e-122
++    {0xCEDF722A585139BA, 0x843610CB4BF160CB},  // 1e-121
++    {0xC2974EB4EE658828, 0xA54394FE1EEDB8FE},  // 1e-120
++    {0x733D226229FEEA32, 0xCE947A3DA6A9273E},  // 1e-119
++    {0x0806357D5A3F525F, 0x811CCC668829B887},  // 1e-118
++    {0xCA07C2DCB0CF26F7, 0xA163FF802A3426A8},  // 1e-117
++    {0xFC89B393DD02F0B5, 0xC9BCFF6034C13052},  // 1e-116
++    {0xBBAC2078D443ACE2, 0xFC2C3F3841F17C67},  // 1e-115
++    {0xD54B944B84AA4C0D, 0x9D9BA7832936EDC0},  // 1e-114
++    {0x0A9E795E65D4DF11, 0xC5029163F384A931},  // 1e-113
++    {0x4D4617B5FF4A16D5, 0xF64335BCF065D37D},  // 1e-112
++    {0x504BCED1BF8E4E45, 0x99EA0196163FA42E},  // 1e-111
++    {0xE45EC2862F71E1D6, 0xC06481FB9BCF8D39},  // 1e-110
++    {0x5D767327BB4E5A4C, 0xF07DA27A82C37088},  // 1e-109
++    {0x3A6A07F8D510F86F, 0x964E858C91BA2655},  // 1e-108
++    {0x890489F70A55368B, 0xBBE226EFB628AFEA},  // 1e-107
++    {0x2B45AC74CCEA842E, 0xEADAB0ABA3B2DBE5},  // 1e-106
++    {0x3B0B8BC90012929D, 0x92C8AE6B464FC96F},  // 1e-105
++    {0x09CE6EBB40173744, 0xB77ADA0617E3BBCB},  // 1e-104
++    {0xCC420A6A101D0515, 0xE55990879DDCAABD},  // 1e-103
++    {0x9FA946824A12232D, 0x8F57FA54C2A9EAB6},  // 1e-102
++    {0x47939822DC96ABF9, 0xB32DF8E9F3546564},  // 1e-101
++    {0x59787E2B93BC56F7, 0xDFF9772470297EBD},  // 1e-100
++    {0x57EB4EDB3C55B65A, 0x8BFBEA76C619EF36},  // 1e-99
++    {0xEDE622920B6B23F1, 0xAEFAE51477A06B03},  // 1e-98
++    {0xE95FAB368E45ECED, 0xDAB99E59958885C4},  // 1e-97
++    {0x11DBCB0218EBB414, 0x88B402F7FD75539B},  // 1e-96
++    {0xD652BDC29F26A119, 0xAAE103B5FCD2A881},  // 1e-95
++    {0x4BE76D3346F0495F, 0xD59944A37C0752A2},  // 1e-94
++    {0x6F70A4400C562DDB, 0x857FCAE62D8493A5},  // 1e-93
++    {0xCB4CCD500F6BB952, 0xA6DFBD9FB8E5B88E},  // 1e-92
++    {0x7E2000A41346A7A7, 0xD097AD07A71F26B2},  // 1e-91
++    {0x8ED400668C0C28C8, 0x825ECC24C873782F},  // 1e-90
++    {0x728900802F0F32FA, 0xA2F67F2DFA90563B},  // 1e-89
++    {0x4F2B40A03AD2FFB9, 0xCBB41EF979346BCA},  // 1e-88
++    {0xE2F610C84987BFA8, 0xFEA126B7D78186BC},  // 1e-87
++    {0x0DD9CA7D2DF4D7C9, 0x9F24B832E6B0F436},  // 1e-86
++    {0x91503D1C79720DBB, 0xC6EDE63FA05D3143},  // 1e-85
++    {0x75A44C6397CE912A, 0xF8A95FCF88747D94},  // 1e-84
++    {0xC986AFBE3EE11ABA, 0x9B69DBE1B548CE7C},  // 1e-83
++    {0xFBE85BADCE996168, 0xC24452DA229B021B},  // 1e-82
++    {0xFAE27299423FB9C3, 0xF2D56790AB41C2A2},  // 1e-81
++    {0xDCCD879FC967D41A, 0x97C560BA6B0919A5},  // 1e-80
++    {0x5400E987BBC1C920, 0xBDB6B8E905CB600F},  // 1e-79
++    {0x290123E9AAB23B68, 0xED246723473E3813},  // 1e-78
++    {0xF9A0B6720AAF6521, 0x9436C0760C86E30B},  // 1e-77
++    {0xF808E40E8D5B3E69, 0xB94470938FA89BCE},  // 1e-76
++    {0xB60B1D1230B20E04, 0xE7958CB87392C2C2},  // 1e-75
++    {0xB1C6F22B5E6F48C2, 0x90BD77F3483BB9B9},  // 1e-74
++    {0x1E38AEB6360B1AF3, 0xB4ECD5F01A4AA828},  // 1e-73
++    {0x25C6DA63C38DE1B0, 0xE2280B6C20DD5232},  // 1e-72
++    {0x579C487E5A38AD0E, 0x8D590723948A535F},  // 1e-71
++    {0x2D835A9DF0C6D851, 0xB0AF48EC79ACE837},  // 1e-70
++    {0xF8E431456CF88E65, 0xDCDB1B2798182244},  // 1e-69
++    {0x1B8E9ECB641B58FF, 0x8A08F0F8BF0F156B},  // 1e-68
++    {0xE272467E3D222F3F, 0xAC8B2D36EED2DAC5},  // 1e-67
++    {0x5B0ED81DCC6ABB0F, 0xD7ADF884AA879177},  // 1e-66
++    {0x98E947129FC2B4E9, 0x86CCBB52EA94BAEA},  // 1e-65
++    {0x3F2398D747B36224, 0xA87FEA27A539E9A5},  // 1e-64
++    {0x8EEC7F0D19A03AAD, 0xD29FE4B18E88640E},  // 1e-63
++    {0x1953CF68300424AC, 0x83A3EEEEF9153E89},  // 1e-62
++    {0x5FA8C3423C052DD7, 0xA48CEAAAB75A8E2B},  // 1e-61
++    {0x3792F412CB06794D, 0xCDB02555653131B6},  // 1e-60
++    {0xE2BBD88BBEE40BD0, 0x808E17555F3EBF11},  // 1e-59
++    {0x5B6ACEAEAE9D0EC4, 0xA0B19D2AB70E6ED6},  // 1e-58
++    {0xF245825A5A445275, 0xC8DE047564D20A8B},  // 1e-57
++    {0xEED6E2F0F0D56712, 0xFB158592BE068D2E},  // 1e-56
++    {0x55464DD69685606B, 0x9CED737BB6C4183D},  // 1e-55
++    {0xAA97E14C3C26B886, 0xC428D05AA4751E4C},  // 1e-54
++    {0xD53DD99F4B3066A8, 0xF53304714D9265DF},  // 1e-53
++    {0xE546A8038EFE4029, 0x993FE2C6D07B7FAB},  // 1e-52
++    {0xDE98520472BDD033, 0xBF8FDB78849A5F96},  // 1e-51
++    {0x963E66858F6D4440, 0xEF73D256A5C0F77C},  // 1e-50
++    {0xDDE7001379A44AA8, 0x95A8637627989AAD},  // 1e-49
++    {0x5560C018580D5D52, 0xBB127C53B17EC159},  // 1e-48
++    {0xAAB8F01E6E10B4A6, 0xE9D71B689DDE71AF},  // 1e-47
++    {0xCAB3961304CA70E8, 0x9226712162AB070D},  // 1e-46
++    {0x3D607B97C5FD0D22, 0xB6B00D69BB55C8D1},  // 1e-45
++    {0x8CB89A7DB77C506A, 0xE45C10C42A2B3B05},  // 1e-44
++    {0x77F3608E92ADB242, 0x8EB98A7A9A5B04E3},  // 1e-43
++    {0x55F038B237591ED3, 0xB267ED1940F1C61C},  // 1e-42
++    {0x6B6C46DEC52F6688, 0xDF01E85F912E37A3},  // 1e-41
++    {0x2323AC4B3B3DA015, 0x8B61313BBABCE2C6},  // 1e-40
++    {0xABEC975E0A0D081A, 0xAE397D8AA96C1B77},  // 1e-39
++    {0x96E7BD358C904A21, 0xD9C7DCED53C72255},  // 1e-38
++    {0x7E50D64177DA2E54, 0x881CEA14545C7575},  // 1e-37
++    {0xDDE50BD1D5D0B9E9, 0xAA242499697392D2},  // 1e-36
++    {0x955E4EC64B44E864, 0xD4AD2DBFC3D07787},  // 1e-35
++    {0xBD5AF13BEF0B113E, 0x84EC3C97DA624AB4},  // 1e-34
++    {0xECB1AD8AEACDD58E, 0xA6274BBDD0FADD61},  // 1e-33
++    {0x67DE18EDA5814AF2, 0xCFB11EAD453994BA},  // 1e-32
++    {0x80EACF948770CED7, 0x81CEB32C4B43FCF4},  // 1e-31
++    {0xA1258379A94D028D, 0xA2425FF75E14FC31},  // 1e-30
++    {0x096EE45813A04330, 0xCAD2F7F5359A3B3E},  // 1e-29
++    {0x8BCA9D6E188853FC, 0xFD87B5F28300CA0D},  // 1e-28
++    {0x775EA264CF55347D, 0x9E74D1B791E07E48},  // 1e-27
++    {0x95364AFE032A819D, 0xC612062576589DDA},  // 1e-26
++    {0x3A83DDBD83F52204, 0xF79687AED3EEC551},  // 1e-25
++    {0xC4926A9672793542, 0x9ABE14CD44753B52},  // 1e-24
++    {0x75B7053C0F178293, 0xC16D9A0095928A27},  // 1e-23
++    {0x5324C68B12DD6338, 0xF1C90080BAF72CB1},  // 1e-22
++    {0xD3F6FC16EBCA5E03, 0x971DA05074DA7BEE},  // 1e-21
++    {0x88F4BB1CA6BCF584, 0xBCE5086492111AEA},  // 1e-20
++    {0x2B31E9E3D06C32E5, 0xEC1E4A7DB69561A5},  // 1e-19
++    {0x3AFF322E62439FCF, 0x9392EE8E921D5D07},  // 1e-18
++    {0x09BEFEB9FAD487C2, 0xB877AA3236A4B449},  // 1e-17
++    {0x4C2EBE687989A9B3, 0xE69594BEC44DE15B},  // 1e-16
++    {0x0F9D37014BF60A10, 0x901D7CF73AB0ACD9},  // 1e-15
++    {0x538484C19EF38C94, 0xB424DC35095CD80F},  // 1e-14
++    {0x2865A5F206B06FB9, 0xE12E13424BB40E13},  // 1e-13
++    {0xF93F87B7442E45D3, 0x8CBCCC096F5088CB},  // 1e-12
++    {0xF78F69A51539D748, 0xAFEBFF0BCB24AAFE},  // 1e-11
++    {0xB573440E5A884D1B, 0xDBE6FECEBDEDD5BE},  // 1e-10
++    {0x31680A88F8953030, 0x89705F4136B4A597},  // 1e-9
++    {0xFDC20D2B36BA7C3D, 0xABCC77118461CEFC},  // 1e-8
++    {0x3D32907604691B4C, 0xD6BF94D5E57A42BC},  // 1e-7
++    {0xA63F9A49C2C1B10F, 0x8637BD05AF6C69B5},  // 1e-6
++    {0x0FCF80DC33721D53, 0xA7C5AC471B478423},  // 1e-5
++    {0xD3C36113404EA4A8, 0xD1B71758E219652B},  // 1e-4
++    {0x645A1CAC083126E9, 0x83126E978D4FDF3B},  // 1e-3
++    {0x3D70A3D70A3D70A3, 0xA3D70A3D70A3D70A},  // 1e-2
++    {0xCCCCCCCCCCCCCCCC, 0xCCCCCCCCCCCCCCCC},  // 1e-1
++    {0x0000000000000000, 0x8000000000000000},  // 1e0
++    {0x0000000000000000, 0xA000000000000000},  // 1e1
++    {0x0000000000000000, 0xC800000000000000},  // 1e2
++    {0x0000000000000000, 0xFA00000000000000},  // 1e3
++    {0x0000000000000000, 0x9C40000000000000},  // 1e4
++    {0x0000000000000000, 0xC350000000000000},  // 1e5
++    {0x0000000000000000, 0xF424000000000000},  // 1e6
++    {0x0000000000000000, 0x9896800000000000},  // 1e7
++    {0x0000000000000000, 0xBEBC200000000000},  // 1e8
++    {0x0000000000000000, 0xEE6B280000000000},  // 1e9
++    {0x0000000000000000, 0x9502F90000000000},  // 1e10
++    {0x0000000000000000, 0xBA43B74000000000},  // 1e11
++    {0x0000000000000000, 0xE8D4A51000000000},  // 1e12
++    {0x0000000000000000, 0x9184E72A00000000},  // 1e13
++    {0x0000000000000000, 0xB5E620F480000000},  // 1e14
++    {0x0000000000000000, 0xE35FA931A0000000},  // 1e15
++    {0x0000000000000000, 0x8E1BC9BF04000000},  // 1e16
++    {0x0000000000000000, 0xB1A2BC2EC5000000},  // 1e17
++    {0x0000000000000000, 0xDE0B6B3A76400000},  // 1e18
++    {0x0000000000000000, 0x8AC7230489E80000},  // 1e19
++    {0x0000000000000000, 0xAD78EBC5AC620000},  // 1e20
++    {0x0000000000000000, 0xD8D726B7177A8000},  // 1e21
++    {0x0000000000000000, 0x878678326EAC9000},  // 1e22
++    {0x0000000000000000, 0xA968163F0A57B400},  // 1e23
++    {0x0000000000000000, 0xD3C21BCECCEDA100},  // 1e24
++    {0x0000000000000000, 0x84595161401484A0},  // 1e25
++    {0x0000000000000000, 0xA56FA5B99019A5C8},  // 1e26
++    {0x0000000000000000, 0xCECB8F27F4200F3A},  // 1e27
++    {0x4000000000000000, 0x813F3978F8940984},  // 1e28
++    {0x5000000000000000, 0xA18F07D736B90BE5},  // 1e29
++    {0xA400000000000000, 0xC9F2C9CD04674EDE},  // 1e30
++    {0x4D00000000000000, 0xFC6F7C4045812296},  // 1e31
++    {0xF020000000000000, 0x9DC5ADA82B70B59D},  // 1e32
++    {0x6C28000000000000, 0xC5371912364CE305},  // 1e33
++    {0xC732000000000000, 0xF684DF56C3E01BC6},  // 1e34
++    {0x3C7F400000000000, 0x9A130B963A6C115C},  // 1e35
++    {0x4B9F100000000000, 0xC097CE7BC90715B3},  // 1e36
++    {0x1E86D40000000000, 0xF0BDC21ABB48DB20},  // 1e37
++    {0x1314448000000000, 0x96769950B50D88F4},  // 1e38
++    {0x17D955A000000000, 0xBC143FA4E250EB31},  // 1e39
++    {0x5DCFAB0800000000, 0xEB194F8E1AE525FD},  // 1e40
++    {0x5AA1CAE500000000, 0x92EFD1B8D0CF37BE},  // 1e41
++    {0xF14A3D9E40000000, 0xB7ABC627050305AD},  // 1e42
++    {0x6D9CCD05D0000000, 0xE596B7B0C643C719},  // 1e43
++    {0xE4820023A2000000, 0x8F7E32CE7BEA5C6F},  // 1e44
++    {0xDDA2802C8A800000, 0xB35DBF821AE4F38B},  // 1e45
++    {0xD50B2037AD200000, 0xE0352F62A19E306E},  // 1e46
++    {0x4526F422CC340000, 0x8C213D9DA502DE45},  // 1e47
++    {0x9670B12B7F410000, 0xAF298D050E4395D6},  // 1e48
++    {0x3C0CDD765F114000, 0xDAF3F04651D47B4C},  // 1e49
++    {0xA5880A69FB6AC800, 0x88D8762BF324CD0F},  // 1e50
++    {0x8EEA0D047A457A00, 0xAB0E93B6EFEE0053},  // 1e51
++    {0x72A4904598D6D880, 0xD5D238A4ABE98068},  // 1e52
++    {0x47A6DA2B7F864750, 0x85A36366EB71F041},  // 1e53
++    {0x999090B65F67D924, 0xA70C3C40A64E6C51},  // 1e54
++    {0xFFF4B4E3F741CF6D, 0xD0CF4B50CFE20765},  // 1e55
++    {0xBFF8F10E7A8921A4, 0x82818F1281ED449F},  // 1e56
++    {0xAFF72D52192B6A0D, 0xA321F2D7226895C7},  // 1e57
++    {0x9BF4F8A69F764490, 0xCBEA6F8CEB02BB39},  // 1e58
++    {0x02F236D04753D5B4, 0xFEE50B7025C36A08},  // 1e59
++    {0x01D762422C946590, 0x9F4F2726179A2245},  // 1e60
++    {0x424D3AD2B7B97EF5, 0xC722F0EF9D80AAD6},  // 1e61
++    {0xD2E0898765A7DEB2, 0xF8EBAD2B84E0D58B},  // 1e62
++    {0x63CC55F49F88EB2F, 0x9B934C3B330C8577},  // 1e63
++    {0x3CBF6B71C76B25FB, 0xC2781F49FFCFA6D5},  // 1e64
++    {0x8BEF464E3945EF7A, 0xF316271C7FC3908A},  // 1e65
++    {0x97758BF0E3CBB5AC, 0x97EDD871CFDA3A56},  // 1e66
++    {0x3D52EEED1CBEA317, 0xBDE94E8E43D0C8EC},  // 1e67
++    {0x4CA7AAA863EE4BDD, 0xED63A231D4C4FB27},  // 1e68
++    {0x8FE8CAA93E74EF6A, 0x945E455F24FB1CF8},  // 1e69
++    {0xB3E2FD538E122B44, 0xB975D6B6EE39E436},  // 1e70
++    {0x60DBBCA87196B616, 0xE7D34C64A9C85D44},  // 1e71
++    {0xBC8955E946FE31CD, 0x90E40FBEEA1D3A4A},  // 1e72
++    {0x6BABAB6398BDBE41, 0xB51D13AEA4A488DD},  // 1e73
++    {0xC696963C7EED2DD1, 0xE264589A4DCDAB14},  // 1e74
++    {0xFC1E1DE5CF543CA2, 0x8D7EB76070A08AEC},  // 1e75
++    {0x3B25A55F43294BCB, 0xB0DE65388CC8ADA8},  // 1e76
++    {0x49EF0EB713F39EBE, 0xDD15FE86AFFAD912},  // 1e77
++    {0x6E3569326C784337, 0x8A2DBF142DFCC7AB},  // 1e78
++    {0x49C2C37F07965404, 0xACB92ED9397BF996},  // 1e79
++    {0xDC33745EC97BE906, 0xD7E77A8F87DAF7FB},  // 1e80
++    {0x69A028BB3DED71A3, 0x86F0AC99B4E8DAFD},  // 1e81
++    {0xC40832EA0D68CE0C, 0xA8ACD7C0222311BC},  // 1e82
++    {0xF50A3FA490C30190, 0xD2D80DB02AABD62B},  // 1e83
++    {0x792667C6DA79E0FA, 0x83C7088E1AAB65DB},  // 1e84
++    {0x577001B891185938, 0xA4B8CAB1A1563F52},  // 1e85
++    {0xED4C0226B55E6F86, 0xCDE6FD5E09ABCF26},  // 1e86
++    {0x544F8158315B05B4, 0x80B05E5AC60B6178},  // 1e87
++    {0x696361AE3DB1C721, 0xA0DC75F1778E39D6},  // 1e88
++    {0x03BC3A19CD1E38E9, 0xC913936DD571C84C},  // 1e89
++    {0x04AB48A04065C723, 0xFB5878494ACE3A5F},  // 1e90
++    {0x62EB0D64283F9C76, 0x9D174B2DCEC0E47B},  // 1e91
++    {0x3BA5D0BD324F8394, 0xC45D1DF942711D9A},  // 1e92
++    {0xCA8F44EC7EE36479, 0xF5746577930D6500},  // 1e93
++    {0x7E998B13CF4E1ECB, 0x9968BF6ABBE85F20},  // 1e94
++    {0x9E3FEDD8C321A67E, 0xBFC2EF456AE276E8},  // 1e95
++    {0xC5CFE94EF3EA101E, 0xEFB3AB16C59B14A2},  // 1e96
++    {0xBBA1F1D158724A12, 0x95D04AEE3B80ECE5},  // 1e97
++    {0x2A8A6E45AE8EDC97, 0xBB445DA9CA61281F},  // 1e98
++    {0xF52D09D71A3293BD, 0xEA1575143CF97226},  // 1e99
++    {0x593C2626705F9C56, 0x924D692CA61BE758},  // 1e100
++    {0x6F8B2FB00C77836C, 0xB6E0C377CFA2E12E},  // 1e101
++    {0x0B6DFB9C0F956447, 0xE498F455C38B997A},  // 1e102
++    {0x4724BD4189BD5EAC, 0x8EDF98B59A373FEC},  // 1e103
++    {0x58EDEC91EC2CB657, 0xB2977EE300C50FE7},  // 1e104
++    {0x2F2967B66737E3ED, 0xDF3D5E9BC0F653E1},  // 1e105
++    {0xBD79E0D20082EE74, 0x8B865B215899F46C},  // 1e106
++    {0xECD8590680A3AA11, 0xAE67F1E9AEC07187},  // 1e107
++    {0xE80E6F4820CC9495, 0xDA01EE641A708DE9},  // 1e108
++    {0x3109058D147FDCDD, 0x884134FE908658B2},  // 1e109
++    {0xBD4B46F0599FD415, 0xAA51823E34A7EEDE},  // 1e110
++    {0x6C9E18AC7007C91A, 0xD4E5E2CDC1D1EA96},  // 1e111
++    {0x03E2CF6BC604DDB0, 0x850FADC09923329E},  // 1e112
++    {0x84DB8346B786151C, 0xA6539930BF6BFF45},  // 1e113
++    {0xE612641865679A63, 0xCFE87F7CEF46FF16},  // 1e114
++    {0x4FCB7E8F3F60C07E, 0x81F14FAE158C5F6E},  // 1e115
++    {0xE3BE5E330F38F09D, 0xA26DA3999AEF7749},  // 1e116
++    {0x5CADF5BFD3072CC5, 0xCB090C8001AB551C},  // 1e117
++    {0x73D9732FC7C8F7F6, 0xFDCB4FA002162A63},  // 1e118
++    {0x2867E7FDDCDD9AFA, 0x9E9F11C4014DDA7E},  // 1e119
++    {0xB281E1FD541501B8, 0xC646D63501A1511D},  // 1e120
++    {0x1F225A7CA91A4226, 0xF7D88BC24209A565},  // 1e121
++    {0x3375788DE9B06958, 0x9AE757596946075F},  // 1e122
++    {0x0052D6B1641C83AE, 0xC1A12D2FC3978937},  // 1e123
++    {0xC0678C5DBD23A49A, 0xF209787BB47D6B84},  // 1e124
++    {0xF840B7BA963646E0, 0x9745EB4D50CE6332},  // 1e125
++    {0xB650E5A93BC3D898, 0xBD176620A501FBFF},  // 1e126
++    {0xA3E51F138AB4CEBE, 0xEC5D3FA8CE427AFF},  // 1e127
++    {0xC66F336C36B10137, 0x93BA47C980E98CDF},  // 1e128
++    {0xB80B0047445D4184, 0xB8A8D9BBE123F017},  // 1e129
++    {0xA60DC059157491E5, 0xE6D3102AD96CEC1D},  // 1e130
++    {0x87C89837AD68DB2F, 0x9043EA1AC7E41392},  // 1e131
++    {0x29BABE4598C311FB, 0xB454E4A179DD1877},  // 1e132
++    {0xF4296DD6FEF3D67A, 0xE16A1DC9D8545E94},  // 1e133
++    {0x1899E4A65F58660C, 0x8CE2529E2734BB1D},  // 1e134
++    {0x5EC05DCFF72E7F8F, 0xB01AE745B101E9E4},  // 1e135
++    {0x76707543F4FA1F73, 0xDC21A1171D42645D},  // 1e136
++    {0x6A06494A791C53A8, 0x899504AE72497EBA},  // 1e137
++    {0x0487DB9D17636892, 0xABFA45DA0EDBDE69},  // 1e138
++    {0x45A9D2845D3C42B6, 0xD6F8D7509292D603},  // 1e139
++    {0x0B8A2392BA45A9B2, 0x865B86925B9BC5C2},  // 1e140
++    {0x8E6CAC7768D7141E, 0xA7F26836F282B732},  // 1e141
++    {0x3207D795430CD926, 0xD1EF0244AF2364FF},  // 1e142
++    {0x7F44E6BD49E807B8, 0x8335616AED761F1F},  // 1e143
++    {0x5F16206C9C6209A6, 0xA402B9C5A8D3A6E7},  // 1e144
++    {0x36DBA887C37A8C0F, 0xCD036837130890A1},  // 1e145
++    {0xC2494954DA2C9789, 0x802221226BE55A64},  // 1e146
++    {0xF2DB9BAA10B7BD6C, 0xA02AA96B06DEB0FD},  // 1e147
++    {0x6F92829494E5ACC7, 0xC83553C5C8965D3D},  // 1e148
++    {0xCB772339BA1F17F9, 0xFA42A8B73ABBF48C},  // 1e149
++    {0xFF2A760414536EFB, 0x9C69A97284B578D7},  // 1e150
++    {0xFEF5138519684ABA, 0xC38413CF25E2D70D},  // 1e151
++    {0x7EB258665FC25D69, 0xF46518C2EF5B8CD1},  // 1e152
++    {0xEF2F773FFBD97A61, 0x98BF2F79D5993802},  // 1e153
++    {0xAAFB550FFACFD8FA, 0xBEEEFB584AFF8603},  // 1e154
++    {0x95BA2A53F983CF38, 0xEEAABA2E5DBF6784},  // 1e155
++    {0xDD945A747BF26183, 0x952AB45CFA97A0B2},  // 1e156
++    {0x94F971119AEEF9E4, 0xBA756174393D88DF},  // 1e157
++    {0x7A37CD5601AAB85D, 0xE912B9D1478CEB17},  // 1e158
++    {0xAC62E055C10AB33A, 0x91ABB422CCB812EE},  // 1e159
++    {0x577B986B314D6009, 0xB616A12B7FE617AA},  // 1e160
++    {0xED5A7E85FDA0B80B, 0xE39C49765FDF9D94},  // 1e161
++    {0x14588F13BE847307, 0x8E41ADE9FBEBC27D},  // 1e162
++    {0x596EB2D8AE258FC8, 0xB1D219647AE6B31C},  // 1e163
++    {0x6FCA5F8ED9AEF3BB, 0xDE469FBD99A05FE3},  // 1e164
++    {0x25DE7BB9480D5854, 0x8AEC23D680043BEE},  // 1e165
++    {0xAF561AA79A10AE6A, 0xADA72CCC20054AE9},  // 1e166
++    {0x1B2BA1518094DA04, 0xD910F7FF28069DA4},  // 1e167
++    {0x90FB44D2F05D0842, 0x87AA9AFF79042286},  // 1e168
++    {0x353A1607AC744A53, 0xA99541BF57452B28},  // 1e169
++    {0x42889B8997915CE8, 0xD3FA922F2D1675F2},  // 1e170
++    {0x69956135FEBADA11, 0x847C9B5D7C2E09B7},  // 1e171
++    {0x43FAB9837E699095, 0xA59BC234DB398C25},  // 1e172
++    {0x94F967E45E03F4BB, 0xCF02B2C21207EF2E},  // 1e173
++    {0x1D1BE0EEBAC278F5, 0x8161AFB94B44F57D},  // 1e174
++    {0x6462D92A69731732, 0xA1BA1BA79E1632DC},  // 1e175
++    {0x7D7B8F7503CFDCFE, 0xCA28A291859BBF93},  // 1e176
++    {0x5CDA735244C3D43E, 0xFCB2CB35E702AF78},  // 1e177
++    {0x3A0888136AFA64A7, 0x9DEFBF01B061ADAB},  // 1e178
++    {0x088AAA1845B8FDD0, 0xC56BAEC21C7A1916},  // 1e179
++    {0x8AAD549E57273D45, 0xF6C69A72A3989F5B},  // 1e180
++    {0x36AC54E2F678864B, 0x9A3C2087A63F6399},  // 1e181
++    {0x84576A1BB416A7DD, 0xC0CB28A98FCF3C7F},  // 1e182
++    {0x656D44A2A11C51D5, 0xF0FDF2D3F3C30B9F},  // 1e183
++    {0x9F644AE5A4B1B325, 0x969EB7C47859E743},  // 1e184
++    {0x873D5D9F0DDE1FEE, 0xBC4665B596706114},  // 1e185
++    {0xA90CB506D155A7EA, 0xEB57FF22FC0C7959},  // 1e186
++    {0x09A7F12442D588F2, 0x9316FF75DD87CBD8},  // 1e187
++    {0x0C11ED6D538AEB2F, 0xB7DCBF5354E9BECE},  // 1e188
++    {0x8F1668C8A86DA5FA, 0xE5D3EF282A242E81},  // 1e189
++    {0xF96E017D694487BC, 0x8FA475791A569D10},  // 1e190
++    {0x37C981DCC395A9AC, 0xB38D92D760EC4455},  // 1e191
++    {0x85BBE253F47B1417, 0xE070F78D3927556A},  // 1e192
++    {0x93956D7478CCEC8E, 0x8C469AB843B89562},  // 1e193
++    {0x387AC8D1970027B2, 0xAF58416654A6BABB},  // 1e194
++    {0x06997B05FCC0319E, 0xDB2E51BFE9D0696A},  // 1e195
++    {0x441FECE3BDF81F03, 0x88FCF317F22241E2},  // 1e196
++    {0xD527E81CAD7626C3, 0xAB3C2FDDEEAAD25A},  // 1e197
++    {0x8A71E223D8D3B074, 0xD60B3BD56A5586F1},  // 1e198
++    {0xF6872D5667844E49, 0x85C7056562757456},  // 1e199
++    {0xB428F8AC016561DB, 0xA738C6BEBB12D16C},  // 1e200
++    {0xE13336D701BEBA52, 0xD106F86E69D785C7},  // 1e201
++    {0xECC0024661173473, 0x82A45B450226B39C},  // 1e202
++    {0x27F002D7F95D0190, 0xA34D721642B06084},  // 1e203
++    {0x31EC038DF7B441F4, 0xCC20CE9BD35C78A5},  // 1e204
++    {0x7E67047175A15271, 0xFF290242C83396CE},  // 1e205
++    {0x0F0062C6E984D386, 0x9F79A169BD203E41},  // 1e206
++    {0x52C07B78A3E60868, 0xC75809C42C684DD1},  // 1e207
++    {0xA7709A56CCDF8A82, 0xF92E0C3537826145},  // 1e208
++    {0x88A66076400BB691, 0x9BBCC7A142B17CCB},  // 1e209
++    {0x6ACFF893D00EA435, 0xC2ABF989935DDBFE},  // 1e210
++    {0x0583F6B8C4124D43, 0xF356F7EBF83552FE},  // 1e211
++    {0xC3727A337A8B704A, 0x98165AF37B2153DE},  // 1e212
++    {0x744F18C0592E4C5C, 0xBE1BF1B059E9A8D6},  // 1e213
++    {0x1162DEF06F79DF73, 0xEDA2EE1C7064130C},  // 1e214
++    {0x8ADDCB5645AC2BA8, 0x9485D4D1C63E8BE7},  // 1e215
++    {0x6D953E2BD7173692, 0xB9A74A0637CE2EE1},  // 1e216
++    {0xC8FA8DB6CCDD0437, 0xE8111C87C5C1BA99},  // 1e217
++    {0x1D9C9892400A22A2, 0x910AB1D4DB9914A0},  // 1e218
++    {0x2503BEB6D00CAB4B, 0xB54D5E4A127F59C8},  // 1e219
++    {0x2E44AE64840FD61D, 0xE2A0B5DC971F303A},  // 1e220
++    {0x5CEAECFED289E5D2, 0x8DA471A9DE737E24},  // 1e221
++    {0x7425A83E872C5F47, 0xB10D8E1456105DAD},  // 1e222
++    {0xD12F124E28F77719, 0xDD50F1996B947518},  // 1e223
++    {0x82BD6B70D99AAA6F, 0x8A5296FFE33CC92F},  // 1e224
++    {0x636CC64D1001550B, 0xACE73CBFDC0BFB7B},  // 1e225
++    {0x3C47F7E05401AA4E, 0xD8210BEFD30EFA5A},  // 1e226
++    {0x65ACFAEC34810A71, 0x8714A775E3E95C78},  // 1e227
++    {0x7F1839A741A14D0D, 0xA8D9D1535CE3B396},  // 1e228
++    {0x1EDE48111209A050, 0xD31045A8341CA07C},  // 1e229
++    {0x934AED0AAB460432, 0x83EA2B892091E44D},  // 1e230
++    {0xF81DA84D5617853F, 0xA4E4B66B68B65D60},  // 1e231
++    {0x36251260AB9D668E, 0xCE1DE40642E3F4B9},  // 1e232
++    {0xC1D72B7C6B426019, 0x80D2AE83E9CE78F3},  // 1e233
++    {0xB24CF65B8612F81F, 0xA1075A24E4421730},  // 1e234
++    {0xDEE033F26797B627, 0xC94930AE1D529CFC},  // 1e235
++    {0x169840EF017DA3B1, 0xFB9B7CD9A4A7443C},  // 1e236
++    {0x8E1F289560EE864E, 0x9D412E0806E88AA5},  // 1e237
++    {0xF1A6F2BAB92A27E2, 0xC491798A08A2AD4E},  // 1e238
++    {0xAE10AF696774B1DB, 0xF5B5D7EC8ACB58A2},  // 1e239
++    {0xACCA6DA1E0A8EF29, 0x9991A6F3D6BF1765},  // 1e240
++    {0x17FD090A58D32AF3, 0xBFF610B0CC6EDD3F},  // 1e241
++    {0xDDFC4B4CEF07F5B0, 0xEFF394DCFF8A948E},  // 1e242
++    {0x4ABDAF101564F98E, 0x95F83D0A1FB69CD9},  // 1e243
++    {0x9D6D1AD41ABE37F1, 0xBB764C4CA7A4440F},  // 1e244
++    {0x84C86189216DC5ED, 0xEA53DF5FD18D5513},  // 1e245
++    {0x32FD3CF5B4E49BB4, 0x92746B9BE2F8552C},  // 1e246
++    {0x3FBC8C33221DC2A1, 0xB7118682DBB66A77},  // 1e247
++    {0x0FABAF3FEAA5334A, 0xE4D5E82392A40515},  // 1e248
++    {0x29CB4D87F2A7400E, 0x8F05B1163BA6832D},  // 1e249
++    {0x743E20E9EF511012, 0xB2C71D5BCA9023F8},  // 1e250
++    {0x914DA9246B255416, 0xDF78E4B2BD342CF6},  // 1e251
++    {0x1AD089B6C2F7548E, 0x8BAB8EEFB6409C1A},  // 1e252
++    {0xA184AC2473B529B1, 0xAE9672ABA3D0C320},  // 1e253
++    {0xC9E5D72D90A2741E, 0xDA3C0F568CC4F3E8},  // 1e254
++    {0x7E2FA67C7A658892, 0x8865899617FB1871},  // 1e255
++    {0xDDBB901B98FEEAB7, 0xAA7EEBFB9DF9DE8D},  // 1e256
++    {0x552A74227F3EA565, 0xD51EA6FA85785631},  // 1e257
++    {0xD53A88958F87275F, 0x8533285C936B35DE},  // 1e258
++    {0x8A892ABAF368F137, 0xA67FF273B8460356},  // 1e259
++    {0x2D2B7569B0432D85, 0xD01FEF10A657842C},  // 1e260
++    {0x9C3B29620E29FC73, 0x8213F56A67F6B29B},  // 1e261
++    {0x8349F3BA91B47B8F, 0xA298F2C501F45F42},  // 1e262
++    {0x241C70A936219A73, 0xCB3F2F7642717713},  // 1e263
++    {0xED238CD383AA0110, 0xFE0EFB53D30DD4D7},  // 1e264
++    {0xF4363804324A40AA, 0x9EC95D1463E8A506},  // 1e265
++    {0xB143C6053EDCD0D5, 0xC67BB4597CE2CE48},  // 1e266
++    {0xDD94B7868E94050A, 0xF81AA16FDC1B81DA},  // 1e267
++    {0xCA7CF2B4191C8326, 0x9B10A4E5E9913128},  // 1e268
++    {0xFD1C2F611F63A3F0, 0xC1D4CE1F63F57D72},  // 1e269
++    {0xBC633B39673C8CEC, 0xF24A01A73CF2DCCF},  // 1e270
++    {0xD5BE0503E085D813, 0x976E41088617CA01},  // 1e271
++    {0x4B2D8644D8A74E18, 0xBD49D14AA79DBC82},  // 1e272
++    {0xDDF8E7D60ED1219E, 0xEC9C459D51852BA2},  // 1e273
++    {0xCABB90E5C942B503, 0x93E1AB8252F33B45},  // 1e274
++    {0x3D6A751F3B936243, 0xB8DA1662E7B00A17},  // 1e275
++    {0x0CC512670A783AD4, 0xE7109BFBA19C0C9D},  // 1e276
++    {0x27FB2B80668B24C5, 0x906A617D450187E2},  // 1e277
++    {0xB1F9F660802DEDF6, 0xB484F9DC9641E9DA},  // 1e278
++    {0x5E7873F8A0396973, 0xE1A63853BBD26451},  // 1e279
++    {0xDB0B487B6423E1E8, 0x8D07E33455637EB2},  // 1e280
++    {0x91CE1A9A3D2CDA62, 0xB049DC016ABC5E5F},  // 1e281
++    {0x7641A140CC7810FB, 0xDC5C5301C56B75F7},  // 1e282
++    {0xA9E904C87FCB0A9D, 0x89B9B3E11B6329BA},  // 1e283
++    {0x546345FA9FBDCD44, 0xAC2820D9623BF429},  // 1e284
++    {0xA97C177947AD4095, 0xD732290FBACAF133},  // 1e285
++    {0x49ED8EABCCCC485D, 0x867F59A9D4BED6C0},  // 1e286
++    {0x5C68F256BFFF5A74, 0xA81F301449EE8C70},  // 1e287
++    {0x73832EEC6FFF3111, 0xD226FC195C6A2F8C},  // 1e288
+ };
+ 
+-// --------
++// wuffs_private_impl__f64_powers_of_10 holds powers of 10 that can be exactly
++// represented by a float64 (what C calls a double).
++static const double wuffs_private_impl__f64_powers_of_10[23] = {
++    1e0,  1e1,  1e2,  1e3,  1e4,  1e5,  1e6,  1e7,  1e8,  1e9,  1e10, 1e11,
++    1e12, 1e13, 1e14, 1e15, 1e16, 1e17, 1e18, 1e19, 1e20, 1e21, 1e22,
++};
+ 
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
+-wuffs_base__base_64__decode(wuffs_base__slice_u8 dst,
+-                            wuffs_base__slice_u8 src,
+-                            bool src_closed,
+-                            uint32_t options) {
+-  const uint8_t* alphabet = (options & WUFFS_BASE__BASE_64__URL_ALPHABET)
+-                                ? wuffs_base__base_64__decode_url
+-                                : wuffs_base__base_64__decode_std;
+-  wuffs_base__transform__output o;
+-  uint8_t* d_ptr = dst.ptr;
+-  size_t d_len = dst.len;
+-  const uint8_t* s_ptr = src.ptr;
+-  size_t s_len = src.len;
+-  bool pad = false;
++// ---------------- IEEE 754 Floating Point
+ 
+-  while (s_len >= 4) {
+-    uint32_t s = wuffs_base__peek_u32le__no_bounds_check(s_ptr);
+-    uint32_t s0 = alphabet[0xFF & (s >> 0)];
+-    uint32_t s1 = alphabet[0xFF & (s >> 8)];
+-    uint32_t s2 = alphabet[0xFF & (s >> 16)];
+-    uint32_t s3 = alphabet[0xFF & (s >> 24)];
++WUFFS_BASE__MAYBE_STATIC wuffs_base__lossy_value_u16  //
++wuffs_base__ieee_754_bit_representation__from_f64_to_u16_truncate(double f) {
++  uint64_t u = 0;
++  if (sizeof(uint64_t) == sizeof(double)) {
++    memcpy(&u, &f, sizeof(uint64_t));
++  }
++  uint16_t neg = ((uint16_t)((u >> 63) << 15));
++  u &= 0x7FFFFFFFFFFFFFFF;
++  uint64_t exp = u >> 52;
++  uint64_t man = u & 0x000FFFFFFFFFFFFF;
+ 
+-    if (((s0 | s1 | s2 | s3) & 0xC0) != 0) {
+-      if (s_len > 4) {
+-        o.status.repr = wuffs_base__error__bad_data;
+-        goto done;
+-      } else if (!src_closed) {
+-        o.status.repr = wuffs_base__suspension__short_read;
+-        goto done;
+-      } else if ((options & WUFFS_BASE__BASE_64__DECODE_ALLOW_PADDING) &&
+-                 (s_ptr[3] == '=')) {
+-        pad = true;
+-        if (s_ptr[2] == '=') {
+-          goto src2;
+-        }
+-        goto src3;
+-      }
+-      o.status.repr = wuffs_base__error__bad_data;
+-      goto done;
++  if (exp == 0x7FF) {
++    if (man == 0) {  // Infinity.
++      wuffs_base__lossy_value_u16 ret;
++      ret.value = neg | 0x7C00;
++      ret.lossy = false;
++      return ret;
+     }
++    // NaN. Shift the 52 mantissa bits to 10 mantissa bits, keeping the most
++    // significant mantissa bit (quiet vs signaling NaNs). Also set the low 9
++    // bits of ret.value so that the 10-bit mantissa is non-zero.
++    wuffs_base__lossy_value_u16 ret;
++    ret.value = neg | 0x7DFF | ((uint16_t)(man >> 42));
++    ret.lossy = false;
++    return ret;
+ 
+-    if (d_len < 3) {
+-      o.status.repr = wuffs_base__suspension__short_write;
+-      goto done;
+-    }
++  } else if (exp > 0x40E) {  // Truncate to the largest finite f16.
++    wuffs_base__lossy_value_u16 ret;
++    ret.value = neg | 0x7BFF;
++    ret.lossy = true;
++    return ret;
+ 
+-    s_ptr += 4;
+-    s_len -= 4;
+-    s = (s0 << 18) | (s1 << 12) | (s2 << 6) | (s3 << 0);
+-    *d_ptr++ = (uint8_t)(s >> 16);
+-    *d_ptr++ = (uint8_t)(s >> 8);
+-    *d_ptr++ = (uint8_t)(s >> 0);
+-    d_len -= 3;
+-  }
+-
+-  if (!src_closed) {
+-    o.status.repr = wuffs_base__suspension__short_read;
+-    goto done;
+-  }
++  } else if (exp <= 0x3E6) {  // Truncate to zero.
++    wuffs_base__lossy_value_u16 ret;
++    ret.value = neg;
++    ret.lossy = (u != 0);
++    return ret;
+ 
+-  if (s_len == 0) {
+-    o.status.repr = NULL;
+-    goto done;
+-  } else if (s_len == 1) {
+-    o.status.repr = wuffs_base__error__bad_data;
+-    goto done;
+-  } else if (s_len == 2) {
+-    goto src2;
++  } else if (exp <= 0x3F0) {  // Normal f64, subnormal f16.
++    // Convert from a 53-bit mantissa (after realizing the implicit bit) to a
++    // 10-bit mantissa and then adjust for the exponent.
++    man |= 0x0010000000000000;
++    uint32_t shift = ((uint32_t)(1051 - exp));  // 1051 = 0x3F0 + 53 - 10.
++    uint64_t shifted_man = man >> shift;
++    wuffs_base__lossy_value_u16 ret;
++    ret.value = neg | ((uint16_t)shifted_man);
++    ret.lossy = (shifted_man << shift) != man;
++    return ret;
+   }
+ 
+-src3:
+-  do {
+-    uint32_t s = wuffs_base__peek_u24le__no_bounds_check(s_ptr);
+-    uint32_t s0 = alphabet[0xFF & (s >> 0)];
+-    uint32_t s1 = alphabet[0xFF & (s >> 8)];
+-    uint32_t s2 = alphabet[0xFF & (s >> 16)];
+-    if ((s0 & 0xC0) || (s1 & 0xC0) || (s2 & 0xC3)) {
+-      o.status.repr = wuffs_base__error__bad_data;
+-      goto done;
+-    }
+-    if (d_len < 2) {
+-      o.status.repr = wuffs_base__suspension__short_write;
+-      goto done;
+-    }
+-    s_ptr += pad ? 4 : 3;
+-    s = (s0 << 18) | (s1 << 12) | (s2 << 6);
+-    *d_ptr++ = (uint8_t)(s >> 16);
+-    *d_ptr++ = (uint8_t)(s >> 8);
+-    o.status.repr = NULL;
+-    goto done;
+-  } while (0);
++  // Normal f64, normal f16.
+ 
+-src2:
+-  do {
+-    uint32_t s = wuffs_base__peek_u16le__no_bounds_check(s_ptr);
+-    uint32_t s0 = alphabet[0xFF & (s >> 0)];
+-    uint32_t s1 = alphabet[0xFF & (s >> 8)];
+-    if ((s0 & 0xC0) || (s1 & 0xCF)) {
+-      o.status.repr = wuffs_base__error__bad_data;
+-      goto done;
+-    }
+-    if (d_len < 1) {
+-      o.status.repr = wuffs_base__suspension__short_write;
+-      goto done;
+-    }
+-    s_ptr += pad ? 4 : 2;
+-    s = (s0 << 18) | (s1 << 12);
+-    *d_ptr++ = (uint8_t)(s >> 16);
+-    o.status.repr = NULL;
+-    goto done;
+-  } while (0);
++  // Re-bias from 1023 to 15 and shift above f16's 10 mantissa bits.
++  exp = (exp - 1008) << 10;  // 1008 = 1023 - 15 = 0x3FF - 0xF.
+ 
+-done:
+-  o.num_dst = (size_t)(d_ptr - dst.ptr);
+-  o.num_src = (size_t)(s_ptr - src.ptr);
+-  return o;
++  // Convert from a 52-bit mantissa (excluding the implicit bit) to a 10-bit
++  // mantissa (again excluding the implicit bit). We lose some information if
++  // any of the bottom 42 bits are non-zero.
++  wuffs_base__lossy_value_u16 ret;
++  ret.value = neg | ((uint16_t)exp) | ((uint16_t)(man >> 42));
++  ret.lossy = (man << 22) != 0;
++  return ret;
+ }
+ 
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
+-wuffs_base__base_64__encode(wuffs_base__slice_u8 dst,
+-                            wuffs_base__slice_u8 src,
+-                            bool src_closed,
+-                            uint32_t options) {
+-  const uint8_t* alphabet = (options & WUFFS_BASE__BASE_64__URL_ALPHABET)
+-                                ? wuffs_base__base_64__encode_url
+-                                : wuffs_base__base_64__encode_std;
+-  wuffs_base__transform__output o;
+-  uint8_t* d_ptr = dst.ptr;
+-  size_t d_len = dst.len;
+-  const uint8_t* s_ptr = src.ptr;
+-  size_t s_len = src.len;
++WUFFS_BASE__MAYBE_STATIC wuffs_base__lossy_value_u32  //
++wuffs_base__ieee_754_bit_representation__from_f64_to_u32_truncate(double f) {
++  uint64_t u = 0;
++  if (sizeof(uint64_t) == sizeof(double)) {
++    memcpy(&u, &f, sizeof(uint64_t));
++  }
++  uint32_t neg = ((uint32_t)(u >> 63)) << 31;
++  u &= 0x7FFFFFFFFFFFFFFF;
++  uint64_t exp = u >> 52;
++  uint64_t man = u & 0x000FFFFFFFFFFFFF;
+ 
+-  do {
+-    while (s_len >= 3) {
+-      if (d_len < 4) {
+-        o.status.repr = wuffs_base__suspension__short_write;
+-        goto done;
+-      }
+-      uint32_t s = wuffs_base__peek_u24be__no_bounds_check(s_ptr);
+-      s_ptr += 3;
+-      s_len -= 3;
+-      *d_ptr++ = alphabet[0x3F & (s >> 18)];
+-      *d_ptr++ = alphabet[0x3F & (s >> 12)];
+-      *d_ptr++ = alphabet[0x3F & (s >> 6)];
+-      *d_ptr++ = alphabet[0x3F & (s >> 0)];
+-      d_len -= 4;
++  if (exp == 0x7FF) {
++    if (man == 0) {  // Infinity.
++      wuffs_base__lossy_value_u32 ret;
++      ret.value = neg | 0x7F800000;
++      ret.lossy = false;
++      return ret;
+     }
++    // NaN. Shift the 52 mantissa bits to 23 mantissa bits, keeping the most
++    // significant mantissa bit (quiet vs signaling NaNs). Also set the low 22
++    // bits of ret.value so that the 23-bit mantissa is non-zero.
++    wuffs_base__lossy_value_u32 ret;
++    ret.value = neg | 0x7FBFFFFF | ((uint32_t)(man >> 29));
++    ret.lossy = false;
++    return ret;
+ 
+-    if (!src_closed) {
+-      o.status.repr = wuffs_base__suspension__short_read;
+-      goto done;
+-    }
++  } else if (exp > 0x47E) {  // Truncate to the largest finite f32.
++    wuffs_base__lossy_value_u32 ret;
++    ret.value = neg | 0x7F7FFFFF;
++    ret.lossy = true;
++    return ret;
+ 
+-    if (s_len == 2) {
+-      if (d_len <
+-          ((options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) ? 4 : 3)) {
+-        o.status.repr = wuffs_base__suspension__short_write;
+-        goto done;
+-      }
+-      uint32_t s = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(s_ptr)))
+-                   << 8;
+-      s_ptr += 2;
+-      *d_ptr++ = alphabet[0x3F & (s >> 18)];
+-      *d_ptr++ = alphabet[0x3F & (s >> 12)];
+-      *d_ptr++ = alphabet[0x3F & (s >> 6)];
+-      if (options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) {
+-        *d_ptr++ = '=';
+-      }
+-      o.status.repr = NULL;
+-      goto done;
++  } else if (exp <= 0x369) {  // Truncate to zero.
++    wuffs_base__lossy_value_u32 ret;
++    ret.value = neg;
++    ret.lossy = (u != 0);
++    return ret;
+ 
+-    } else if (s_len == 1) {
+-      if (d_len <
+-          ((options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) ? 4 : 2)) {
+-        o.status.repr = wuffs_base__suspension__short_write;
+-        goto done;
+-      }
+-      uint32_t s = ((uint32_t)(wuffs_base__peek_u8__no_bounds_check(s_ptr)))
+-                   << 16;
+-      s_ptr += 1;
+-      *d_ptr++ = alphabet[0x3F & (s >> 18)];
+-      *d_ptr++ = alphabet[0x3F & (s >> 12)];
+-      if (options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) {
+-        *d_ptr++ = '=';
+-        *d_ptr++ = '=';
+-      }
+-      o.status.repr = NULL;
+-      goto done;
++  } else if (exp <= 0x380) {  // Normal f64, subnormal f32.
++    // Convert from a 53-bit mantissa (after realizing the implicit bit) to a
++    // 23-bit mantissa and then adjust for the exponent.
++    man |= 0x0010000000000000;
++    uint32_t shift = ((uint32_t)(926 - exp));  // 926 = 0x380 + 53 - 23.
++    uint64_t shifted_man = man >> shift;
++    wuffs_base__lossy_value_u32 ret;
++    ret.value = neg | ((uint32_t)shifted_man);
++    ret.lossy = (shifted_man << shift) != man;
++    return ret;
++  }
+ 
+-    } else {
+-      o.status.repr = NULL;
+-      goto done;
+-    }
+-  } while (0);
++  // Normal f64, normal f32.
+ 
+-done:
+-  o.num_dst = (size_t)(d_ptr - dst.ptr);
+-  o.num_src = (size_t)(s_ptr - src.ptr);
+-  return o;
++  // Re-bias from 1023 to 127 and shift above f32's 23 mantissa bits.
++  exp = (exp - 896) << 23;  // 896 = 1023 - 127 = 0x3FF - 0x7F.
++
++  // Convert from a 52-bit mantissa (excluding the implicit bit) to a 23-bit
++  // mantissa (again excluding the implicit bit). We lose some information if
++  // any of the bottom 29 bits are non-zero.
++  wuffs_base__lossy_value_u32 ret;
++  ret.value = neg | ((uint32_t)exp) | ((uint32_t)(man >> 29));
++  ret.lossy = (man << 35) != 0;
++  return ret;
+ }
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) ||
+-        // defined(WUFFS_CONFIG__MODULE__BASE) ||
+-        // defined(WUFFS_CONFIG__MODULE__BASE__INTCONV)
++// --------
+ 
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
+-    defined(WUFFS_CONFIG__MODULE__BASE__MAGIC)
++#define WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE 2047
++#define WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION 800
+ 
+-// ---------------- Magic Numbers
++// WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL is the largest N such that
++// ((10 << N) < (1 << 64)).
++#define WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL 60
+ 
+-// ICO doesn't start with a magic identifier. Instead, see if the opening bytes
+-// are plausibly ICO.
++// wuffs_private_impl__high_prec_dec (abbreviated as HPD) is a fixed precision
++// floating point decimal number, augmented with ±infinity values, but it
++// cannot represent NaN (Not a Number).
+ //
+-// Callers should have already verified that (prefix_data.len >= 2) and the
+-// first two bytes are 0x00.
++// "High precision" means that the mantissa holds 800 decimal digits. 800 is
++// WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION.
+ //
+-// See:
+-//  - https://docs.fileformat.com/image/ico/
+-static int32_t  //
+-wuffs_base__magic_number_guess_fourcc__maybe_ico(
+-    wuffs_base__slice_u8 prefix_data,
+-    bool prefix_closed) {
+-  // Allow-list for the Image Type field.
+-  if (prefix_data.len < 4) {
+-    return prefix_closed ? 0 : -1;
+-  } else if (prefix_data.ptr[3] != 0) {
+-    return 0;
+-  }
+-  switch (prefix_data.ptr[2]) {
+-    case 0x01:  // ICO
+-    case 0x02:  // CUR
+-      break;
+-    default:
+-      return 0;
+-  }
+-
+-  // The Number Of Images should be positive.
+-  if (prefix_data.len < 6) {
+-    return prefix_closed ? 0 : -1;
+-  } else if ((prefix_data.ptr[4] == 0) && (prefix_data.ptr[5] == 0)) {
+-    return 0;
+-  }
++// An HPD isn't for general purpose arithmetic, only for conversions to and
++// from IEEE 754 double-precision floating point, where the largest and
++// smallest positive, finite values are approximately 1.8e+308 and 4.9e-324.
++// HPD exponents above +2047 mean infinity, below -2047 mean zero. The ±2047
++// bounds are further away from zero than ±(324 + 800), where 800 and 2047 is
++// WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION and
++// WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE.
++//
++// digits[.. num_digits] are the number's digits in big-endian order. The
++// uint8_t values are in the range [0 ..= 9], not ['0' ..= '9'], where e.g. '7'
++// is the ASCII value 0x37.
++//
++// decimal_point is the index (within digits) of the decimal point. It may be
++// negative or be larger than num_digits, in which case the explicit digits are
++// padded with implicit zeroes.
++//
++// For example, if num_digits is 3 and digits is "\x07\x08\x09":
++//  - A decimal_point of -2 means ".00789"
++//  - A decimal_point of -1 means ".0789"
++//  - A decimal_point of +0 means ".789"
++//  - A decimal_point of +1 means "7.89"
++//  - A decimal_point of +2 means "78.9"
++//  - A decimal_point of +3 means "789."
++//  - A decimal_point of +4 means "7890."
++//  - A decimal_point of +5 means "78900."
++//
++// As above, a decimal_point higher than +2047 means that the overall value is
++// infinity, lower than -2047 means zero.
++//
++// negative is a sign bit. An HPD can distinguish positive and negative zero.
++//
++// truncated is whether there are more than
++// WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION digits, and at least one of those
++// extra digits are non-zero. The existence of long-tail digits can affect
++// rounding.
++//
++// The "all fields are zero" value is valid, and represents the number +0.
++typedef struct wuffs_private_impl__high_prec_dec__struct {
++  uint32_t num_digits;
++  int32_t decimal_point;
++  bool negative;
++  bool truncated;
++  uint8_t digits[WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION];
++} wuffs_private_impl__high_prec_dec;
+ 
+-  // The first ICONDIRENTRY's fourth byte should be zero.
+-  if (prefix_data.len < 10) {
+-    return prefix_closed ? 0 : -1;
+-  } else if (prefix_data.ptr[9] != 0) {
+-    return 0;
++// wuffs_private_impl__high_prec_dec__trim trims trailing zeroes from the
++// h->digits[.. h->num_digits] slice. They have no benefit, since we explicitly
++// track h->decimal_point.
++//
++// Preconditions:
++//  - h is non-NULL.
++static inline void  //
++wuffs_private_impl__high_prec_dec__trim(wuffs_private_impl__high_prec_dec* h) {
++  while ((h->num_digits > 0) && (h->digits[h->num_digits - 1] == 0)) {
++    h->num_digits--;
+   }
+-
+-  // TODO: have a separate FourCC for CUR?
+-  return 0x49434F20;  // 'ICO 'be
+ }
+ 
+-// TGA doesn't start with a magic identifier. Instead, see if the opening bytes
+-// are plausibly TGA.
++// wuffs_private_impl__high_prec_dec__assign sets h to represent the number x.
+ //
+-// Callers should have already verified that (prefix_data.len >= 2) and the
+-// second byte (prefix_data.ptr[1], the Color Map Type byte), is either 0x00 or
+-// 0x01.
+-//
+-// See:
+-//  - https://docs.fileformat.com/image/tga/
+-//  - https://www.dca.fee.unicamp.br/~martino/disciplinas/ea978/tgaffs.pdf
+-static int32_t  //
+-wuffs_base__magic_number_guess_fourcc__maybe_tga(
+-    wuffs_base__slice_u8 prefix_data,
+-    bool prefix_closed) {
+-  // Allow-list for the Image Type field.
+-  if (prefix_data.len < 3) {
+-    return prefix_closed ? 0 : -1;
+-  }
+-  switch (prefix_data.ptr[2]) {
+-    case 0x01:
+-    case 0x02:
+-    case 0x03:
+-    case 0x09:
+-    case 0x0A:
+-    case 0x0B:
+-      break;
+-    default:
+-      // TODO: 0x20 and 0x21 are invalid, according to the spec, but are
+-      // apparently unofficial extensions.
+-      return 0;
+-  }
+-
+-  // Allow-list for the Color Map Entry Size field (if the Color Map Type field
+-  // is non-zero) or else all the Color Map fields should be zero.
+-  if (prefix_data.len < 8) {
+-    return prefix_closed ? 0 : -1;
+-  } else if (prefix_data.ptr[1] != 0x00) {
+-    switch (prefix_data.ptr[7]) {
+-      case 0x0F:
+-      case 0x10:
+-      case 0x18:
+-      case 0x20:
+-        break;
+-      default:
+-        return 0;
+-    }
+-  } else if ((prefix_data.ptr[3] | prefix_data.ptr[4] | prefix_data.ptr[5] |
+-              prefix_data.ptr[6] | prefix_data.ptr[7]) != 0x00) {
+-    return 0;
+-  }
++// Preconditions:
++//  - h is non-NULL.
++static void  //
++wuffs_private_impl__high_prec_dec__assign(wuffs_private_impl__high_prec_dec* h,
++                                          uint64_t x,
++                                          bool negative) {
++  uint32_t n = 0;
+ 
+-  // Allow-list for the Pixel Depth field.
+-  if (prefix_data.len < 17) {
+-    return prefix_closed ? 0 : -1;
+-  }
+-  switch (prefix_data.ptr[16]) {
+-    case 0x01:
+-    case 0x08:
+-    case 0x0F:
+-    case 0x10:
+-    case 0x18:
+-    case 0x20:
+-      break;
+-    default:
+-      return 0;
++  // Set h->digits.
++  if (x > 0) {
++    // Calculate the digits, working right-to-left. After we determine n (how
++    // many digits there are), copy from buf to h->digits.
++    //
++    // UINT64_MAX, 18446744073709551615, is 20 digits long. It can be faster to
++    // copy a constant number of bytes than a variable number (20 instead of
++    // n). Make buf large enough (and start writing to it from the middle) so
++    // that can we always copy 20 bytes: the slice buf[(20-n) .. (40-n)].
++    uint8_t buf[40] = {0};
++    uint8_t* ptr = &buf[20];
++    do {
++      uint64_t remaining = x / 10;
++      x -= remaining * 10;
++      ptr--;
++      *ptr = (uint8_t)x;
++      n++;
++      x = remaining;
++    } while (x > 0);
++    memcpy(h->digits, ptr, 20);
+   }
+ 
+-  return 0x54474120;  // 'TGA 'be
++  // Set h's other fields.
++  h->num_digits = n;
++  h->decimal_point = (int32_t)n;
++  h->negative = negative;
++  h->truncated = false;
++  wuffs_private_impl__high_prec_dec__trim(h);
+ }
+ 
+-WUFFS_BASE__MAYBE_STATIC int32_t  //
+-wuffs_base__magic_number_guess_fourcc(wuffs_base__slice_u8 prefix_data,
+-                                      bool prefix_closed) {
+-  // This is similar to (but different from):
+-  //  - the magic/Magdir tables under https://github.com/file/file
+-  //  - the MIME Sniffing algorithm at https://mimesniff.spec.whatwg.org/
+-
+-  // table holds the 'magic numbers' (which are actually variable length
+-  // strings). The strings may contain NUL bytes, so the "const char* magic"
+-  // value starts with the length-minus-1 of the 'magic number'.
+-  //
+-  // Keep it sorted by magic[1], then magic[0] descending (prioritizing longer
+-  // matches) and finally by magic[2:]. When multiple entries match, the
+-  // longest one wins.
+-  //
+-  // The fourcc field might be negated, in which case there's further
+-  // specialization (see § below).
+-  static struct {
+-    int32_t fourcc;
+-    const char* magic;
+-  } table[] = {
+-      {-0x30302020, "\x01\x00\x00"},              // '00  'be
+-      {+0x475A2020, "\x02\x1F\x8B\x08"},          // GZ
+-      {+0x5A535444, "\x03\x28\xB5\x2F\xFD"},      // ZSTD
+-      {+0x425A3220, "\x02\x42\x5A\x68"},          // BZ2
+-      {+0x424D5020, "\x01\x42\x4D"},              // BMP
+-      {+0x47494620, "\x03\x47\x49\x46\x38"},      // GIF
+-      {+0x54494646, "\x03\x49\x49\x2A\x00"},      // TIFF (little-endian)
+-      {+0x54494646, "\x03\x4D\x4D\x00\x2A"},      // TIFF (big-endian)
+-      {+0x4E50424D, "\x02\x50\x35\x0A"},          // NPBM (P5; *.pgm)
+-      {+0x4E50424D, "\x02\x50\x36\x0A"},          // NPBM (P6; *.ppm)
+-      {-0x52494646, "\x03\x52\x49\x46\x46"},      // RIFF
+-      {+0x4C5A4D41, "\x04\x5D\x00\x10\x00\x00"},  // LZMA
+-      {+0x4C5A4D41, "\x02\x5D\x00\x00"},          // LZMA
+-      {+0x4E494520, "\x02\x6E\xC3\xAF"},          // NIE
+-      {+0x514F4920, "\x03\x71\x6F\x69\x66"},      // QOI
+-      {+0x5A4C4942, "\x01\x78\x9C"},              // ZLIB
+-      {+0x504E4720, "\x03\x89\x50\x4E\x47"},      // PNG
+-      {+0x585A2020, "\x04\xFD\x37\x7A\x58\x5A"},  // XZ
+-      {+0x4A504547, "\x01\xFF\xD8"},              // JPEG
+-  };
+-  static const size_t table_len = sizeof(table) / sizeof(table[0]);
+-
+-  if (prefix_data.len == 0) {
+-    return prefix_closed ? 0 : -1;
++static wuffs_base__status  //
++wuffs_private_impl__high_prec_dec__parse(wuffs_private_impl__high_prec_dec* h,
++                                         wuffs_base__slice_u8 s,
++                                         uint32_t options) {
++  if (!h) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+-  uint8_t pre_first_byte = prefix_data.ptr[0];
++  h->num_digits = 0;
++  h->decimal_point = 0;
++  h->negative = false;
++  h->truncated = false;
+ 
+-  int32_t fourcc = 0;
+-  size_t i;
+-  for (i = 0; i < table_len; i++) {
+-    uint8_t mag_first_byte = ((uint8_t)(table[i].magic[1]));
+-    if (pre_first_byte < mag_first_byte) {
+-      break;
+-    } else if (pre_first_byte > mag_first_byte) {
+-      continue;
+-    }
+-    fourcc = table[i].fourcc;
++  uint8_t* p = s.ptr;
++  uint8_t* q = s.ptr + s.len;
+ 
+-    uint8_t mag_remaining_len = ((uint8_t)(table[i].magic[0]));
+-    if (mag_remaining_len == 0) {
+-      goto match;
++  if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
++    for (;; p++) {
++      if (p >= q) {
++        return wuffs_base__make_status(wuffs_base__error__bad_argument);
++      } else if (*p != '_') {
++        break;
++      }
+     }
++  }
+ 
+-    const char* mag_remaining_ptr = table[i].magic + 2;
+-    uint8_t* pre_remaining_ptr = prefix_data.ptr + 1;
+-    size_t pre_remaining_len = prefix_data.len - 1;
+-    if (pre_remaining_len < mag_remaining_len) {
+-      if (!memcmp(pre_remaining_ptr, mag_remaining_ptr, pre_remaining_len)) {
+-        return prefix_closed ? 0 : -1;
+-      }
++  // Parse sign.
++  do {
++    if (*p == '+') {
++      p++;
++    } else if (*p == '-') {
++      h->negative = true;
++      p++;
+     } else {
+-      if (!memcmp(pre_remaining_ptr, mag_remaining_ptr, mag_remaining_len)) {
+-        goto match;
++      break;
++    }
++    if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
++      for (;; p++) {
++        if (p >= q) {
++          return wuffs_base__make_status(wuffs_base__error__bad_argument);
++        } else if (*p != '_') {
++          break;
++        }
+       }
+     }
+-  }
+-
+-  if (prefix_data.len < 2) {
+-    return prefix_closed ? 0 : -1;
+-  } else if ((prefix_data.ptr[1] == 0x00) || (prefix_data.ptr[1] == 0x01)) {
+-    return wuffs_base__magic_number_guess_fourcc__maybe_tga(prefix_data,
+-                                                            prefix_closed);
+-  }
+-
+-  return 0;
+-
+-match:
+-  // Negative FourCC values (see § above) are further specialized.
+-  if (fourcc < 0) {
+-    fourcc = -fourcc;
++  } while (0);
+ 
+-    if (fourcc == 0x52494646) {  // 'RIFF'be
+-      if (prefix_data.len < 12) {
+-        return prefix_closed ? 0 : -1;
++  // Parse digits, up to (and including) a '.', 'E' or 'e'. Examples for each
++  // limb in this if-else chain:
++  //  - "0.789"
++  //  - "1002.789"
++  //  - ".789"
++  //  - Other (invalid input).
++  uint32_t nd = 0;
++  int32_t dp = 0;
++  bool no_digits_before_separator = false;
++  if (('0' == *p) &&
++      !(options &
++        WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES)) {
++    p++;
++    for (;; p++) {
++      if (p >= q) {
++        goto after_all;
++      } else if (*p ==
++                 ((options &
++                   WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
++                      ? ','
++                      : '.')) {
++        p++;
++        goto after_sep;
++      } else if ((*p == 'E') || (*p == 'e')) {
++        p++;
++        goto after_exp;
++      } else if ((*p != '_') ||
++                 !(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
++        return wuffs_base__make_status(wuffs_base__error__bad_argument);
+       }
+-      uint32_t x = wuffs_base__peek_u32be__no_bounds_check(prefix_data.ptr + 8);
+-      if (x == 0x57454250) {  // 'WEBP'be
+-        return 0x57454250;    // 'WEBP'be
++    }
++
++  } else if (('0' <= *p) && (*p <= '9')) {
++    if (*p == '0') {
++      for (; (p < q) && (*p == '0'); p++) {
+       }
++    } else {
++      h->digits[nd++] = (uint8_t)(*p - '0');
++      dp = (int32_t)nd;
++      p++;
++    }
+ 
+-    } else if (fourcc == 0x30302020) {  // '00  'be
+-      // Binary data starting with multiple 0x00 NUL bytes is quite common.
+-      // Unfortunately, some file formats also don't start with a magic
+-      // identifier, so we have to use heuristics (where the order matters, the
+-      // same as /usr/bin/file's magic/Magdir tables) as best we can. Maybe
+-      // it's TGA, ICO/CUR, etc. Maybe it's something else.
+-      int32_t tga = wuffs_base__magic_number_guess_fourcc__maybe_tga(
+-          prefix_data, prefix_closed);
+-      if (tga != 0) {
+-        return tga;
++    for (;; p++) {
++      if (p >= q) {
++        goto after_all;
++      } else if (('0' <= *p) && (*p <= '9')) {
++        if (nd < WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION) {
++          h->digits[nd++] = (uint8_t)(*p - '0');
++          dp = (int32_t)nd;
++        } else if ('0' != *p) {
++          // Long-tail non-zeroes set the truncated bit.
++          h->truncated = true;
++        }
++      } else if (*p ==
++                 ((options &
++                   WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
++                      ? ','
++                      : '.')) {
++        p++;
++        goto after_sep;
++      } else if ((*p == 'E') || (*p == 'e')) {
++        p++;
++        goto after_exp;
++      } else if ((*p != '_') ||
++                 !(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
++        return wuffs_base__make_status(wuffs_base__error__bad_argument);
+       }
+-      int32_t ico = wuffs_base__magic_number_guess_fourcc__maybe_ico(
+-          prefix_data, prefix_closed);
+-      if (ico != 0) {
+-        return ico;
++    }
++
++  } else if (*p == ((options &
++                     WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
++                        ? ','
++                        : '.')) {
++    p++;
++    no_digits_before_separator = true;
++
++  } else {
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++
++after_sep:
++  for (;; p++) {
++    if (p >= q) {
++      goto after_all;
++    } else if ('0' == *p) {
++      if (nd == 0) {
++        // Track leading zeroes implicitly.
++        dp--;
++      } else if (nd < WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION) {
++        h->digits[nd++] = (uint8_t)(*p - '0');
+       }
+-      if (prefix_data.len < 4) {
+-        return prefix_closed ? 0 : -1;
+-      } else if ((prefix_data.ptr[2] != 0x00) &&
+-                 ((prefix_data.ptr[2] >= 0x80) ||
+-                  (prefix_data.ptr[3] != 0x00))) {
+-        // Roughly speaking, this could be a non-degenerate (non-0-width and
+-        // non-0-height) WBMP image.
+-        return 0x57424D50;  // 'WBMP'be
++    } else if (('0' < *p) && (*p <= '9')) {
++      if (nd < WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION) {
++        h->digits[nd++] = (uint8_t)(*p - '0');
++      } else {
++        // Long-tail non-zeroes set the truncated bit.
++        h->truncated = true;
+       }
+-      return 0;
++    } else if ((*p == 'E') || (*p == 'e')) {
++      p++;
++      goto after_exp;
++    } else if ((*p != '_') ||
++               !(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
++      return wuffs_base__make_status(wuffs_base__error__bad_argument);
+     }
+   }
+-  return fourcc;
+-}
+-
+-#endif  // !defined(WUFFS_CONFIG__MODULES) ||
+-        // defined(WUFFS_CONFIG__MODULE__BASE) ||
+-        // defined(WUFFS_CONFIG__MODULE__BASE__MAGIC)
+-
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
+-    defined(WUFFS_CONFIG__MODULE__BASE__PIXCONV)
+ 
+-// ---------------- Pixel Swizzler
++after_exp:
++  do {
++    if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
++      for (;; p++) {
++        if (p >= q) {
++          return wuffs_base__make_status(wuffs_base__error__bad_argument);
++        } else if (*p != '_') {
++          break;
++        }
++      }
++    }
+ 
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgrw__rgb__x86_sse42(uint8_t* dst_ptr,
+-                                                 size_t dst_len,
+-                                                 uint8_t* dst_palette_ptr,
+-                                                 size_t dst_palette_len,
+-                                                 const uint8_t* src_ptr,
+-                                                 size_t src_len);
++    int32_t exp_sign = +1;
++    if (*p == '+') {
++      p++;
++    } else if (*p == '-') {
++      exp_sign = -1;
++      p++;
++    }
+ 
+-WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__swap_rgbx_bgrx__x86_sse42(uint8_t* dst_ptr,
+-                                                      size_t dst_len,
+-                                                      uint8_t* dst_palette_ptr,
+-                                                      size_t dst_palette_len,
+-                                                      const uint8_t* src_ptr,
+-                                                      size_t src_len);
++    int32_t exp = 0;
++    const int32_t exp_large = WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE +
++                              WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION;
++    bool saw_exp_digits = false;
++    for (; p < q; p++) {
++      if ((*p == '_') &&
++          (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
++        // No-op.
++      } else if (('0' <= *p) && (*p <= '9')) {
++        saw_exp_digits = true;
++        if (exp < exp_large) {
++          exp = (10 * exp) + ((int32_t)(*p - '0'));
++        }
++      } else {
++        break;
++      }
++    }
++    if (!saw_exp_digits) {
++      return wuffs_base__make_status(wuffs_base__error__bad_argument);
++    }
++    dp += exp_sign * exp;
++  } while (0);
+ 
+-WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__xxxx__y__x86_sse42(uint8_t* dst_ptr,
+-                                               size_t dst_len,
+-                                               uint8_t* dst_palette_ptr,
+-                                               size_t dst_palette_len,
+-                                               const uint8_t* src_ptr,
+-                                               size_t src_len);
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
++after_all:
++  if (p != q) {
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  h->num_digits = nd;
++  if (nd == 0) {
++    if (no_digits_before_separator) {
++      return wuffs_base__make_status(wuffs_base__error__bad_argument);
++    }
++    h->decimal_point = 0;
++  } else if (dp < -WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE) {
++    h->decimal_point = -WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE - 1;
++  } else if (dp > +WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE) {
++    h->decimal_point = +WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE + 1;
++  } else {
++    h->decimal_point = dp;
++  }
++  wuffs_private_impl__high_prec_dec__trim(h);
++  return wuffs_base__make_status(NULL);
++}
+ 
+ // --------
+ 
+-static inline uint32_t  //
+-wuffs_base__swap_u32_argb_abgr(uint32_t u) {
+-  uint32_t o = u & 0xFF00FF00ul;
+-  uint32_t r = u & 0x00FF0000ul;
+-  uint32_t b = u & 0x000000FFul;
+-  return o | (r >> 16) | (b << 16);
+-}
++// wuffs_private_impl__high_prec_dec__lshift_num_new_digits returns the number
++// of additional decimal digits when left-shifting by shift.
++//
++// See below for preconditions.
++static uint32_t  //
++wuffs_private_impl__high_prec_dec__lshift_num_new_digits(
++    wuffs_private_impl__high_prec_dec* h,
++    uint32_t shift) {
++  // Masking with 0x3F should be unnecessary (assuming the preconditions) but
++  // it's cheap and ensures that we don't overflow the
++  // wuffs_private_impl__hpd_left_shift array.
++  shift &= 63;
+ 
+-static inline uint64_t  //
+-wuffs_base__swap_u64_argb_abgr(uint64_t u) {
+-  uint64_t o = u & 0xFFFF0000FFFF0000ull;
+-  uint64_t r = u & 0x0000FFFF00000000ull;
+-  uint64_t b = u & 0x000000000000FFFFull;
+-  return o | (r >> 32) | (b << 32);
+-}
++  uint32_t x_a = wuffs_private_impl__hpd_left_shift[shift];
++  uint32_t x_b = wuffs_private_impl__hpd_left_shift[shift + 1];
++  uint32_t num_new_digits = x_a >> 11;
++  uint32_t pow5_a = 0x7FF & x_a;
++  uint32_t pow5_b = 0x7FF & x_b;
+ 
+-static inline uint32_t  //
+-wuffs_base__color_u64__as__color_u32__swap_u32_argb_abgr(uint64_t c) {
+-  uint32_t a = ((uint32_t)(0xFF & (c >> 56)));
+-  uint32_t r = ((uint32_t)(0xFF & (c >> 40)));
+-  uint32_t g = ((uint32_t)(0xFF & (c >> 24)));
+-  uint32_t b = ((uint32_t)(0xFF & (c >> 8)));
+-  return (a << 24) | (b << 16) | (g << 8) | (r << 0);
++  const uint8_t* pow5 = &wuffs_private_impl__powers_of_5[pow5_a];
++  uint32_t i = 0;
++  uint32_t n = pow5_b - pow5_a;
++  for (; i < n; i++) {
++    if (i >= h->num_digits) {
++      return num_new_digits - 1;
++    } else if (h->digits[i] == pow5[i]) {
++      continue;
++    } else if (h->digits[i] < pow5[i]) {
++      return num_new_digits - 1;
++    } else {
++      return num_new_digits;
++    }
++  }
++  return num_new_digits;
+ }
+ 
+ // --------
+ 
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__color_u32_argb_premul  //
+-wuffs_base__pixel_buffer__color_u32_at(const wuffs_base__pixel_buffer* pb,
+-                                       uint32_t x,
+-                                       uint32_t y) {
+-  if (!pb || (x >= pb->pixcfg.private_impl.width) ||
+-      (y >= pb->pixcfg.private_impl.height)) {
++// wuffs_private_impl__high_prec_dec__rounded_integer returns the integral
++// (non-fractional) part of h, provided that it is 18 or fewer decimal digits.
++// For 19 or more digits, it returns UINT64_MAX. Note that:
++//  - (1 << 53) is    9007199254740992, which has 16 decimal digits.
++//  - (1 << 56) is   72057594037927936, which has 17 decimal digits.
++//  - (1 << 59) is  576460752303423488, which has 18 decimal digits.
++//  - (1 << 63) is 9223372036854775808, which has 19 decimal digits.
++// and that IEEE 754 double precision has 52 mantissa bits.
++//
++// That integral part is rounded-to-even: rounding 7.5 or 8.5 both give 8.
++//
++// h's negative bit is ignored: rounding -8.6 returns 9.
++//
++// See below for preconditions.
++static uint64_t  //
++wuffs_private_impl__high_prec_dec__rounded_integer(
++    wuffs_private_impl__high_prec_dec* h) {
++  if ((h->num_digits == 0) || (h->decimal_point < 0)) {
+     return 0;
++  } else if (h->decimal_point > 18) {
++    return UINT64_MAX;
+   }
+ 
+-  if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) {
+-    // TODO: support planar formats.
+-    return 0;
++  uint32_t dp = (uint32_t)(h->decimal_point);
++  uint64_t n = 0;
++  uint32_t i = 0;
++  for (; i < dp; i++) {
++    n = (10 * n) + ((i < h->num_digits) ? h->digits[i] : 0);
+   }
+ 
+-  size_t stride = pb->private_impl.planes[0].stride;
+-  const uint8_t* row = pb->private_impl.planes[0].ptr + (stride * ((size_t)y));
++  bool round_up = false;
++  if (dp < h->num_digits) {
++    round_up = h->digits[dp] >= 5;
++    if ((h->digits[dp] == 5) && (dp + 1 == h->num_digits)) {
++      // We are exactly halfway. If we're truncated, round up, otherwise round
++      // to even.
++      round_up = h->truncated ||  //
++                 ((dp > 0) && (1 & h->digits[dp - 1]));
++    }
++  }
++  if (round_up) {
++    n++;
++  }
+ 
+-  switch (pb->pixcfg.private_impl.pixfmt.repr) {
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
+-      return wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x)));
++  return n;
++}
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: {
+-      uint8_t* palette = pb->private_impl.planes[3].ptr;
+-      return wuffs_base__peek_u32le__no_bounds_check(palette +
+-                                                     (4 * ((size_t)row[x])));
+-    }
++// wuffs_private_impl__high_prec_dec__small_xshift shifts h's number (where 'x'
++// is 'l' or 'r' for left or right) by a small shift value.
++//
++// Preconditions:
++//  - h is non-NULL.
++//  - h->decimal_point is "not extreme".
++//  - shift is non-zero.
++//  - shift is "a small shift".
++//
++// "Not extreme" means within ±WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE.
++//
++// "A small shift" means not more than
++// WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL.
++//
++// wuffs_private_impl__high_prec_dec__rounded_integer and
++// wuffs_private_impl__high_prec_dec__lshift_num_new_digits have the same
++// preconditions.
++//
++// wuffs_private_impl__high_prec_dec__lshift keeps the first two preconditions
++// but not the last two. Its shift argument is signed and does not need to be
++// "small": zero is a no-op, positive means left shift and negative means right
++// shift.
+ 
+-      // Common formats above. Rarer formats below.
++static void  //
++wuffs_private_impl__high_prec_dec__small_lshift(
++    wuffs_private_impl__high_prec_dec* h,
++    uint32_t shift) {
++  if (h->num_digits == 0) {
++    return;
++  }
++  uint32_t num_new_digits =
++      wuffs_private_impl__high_prec_dec__lshift_num_new_digits(h, shift);
++  uint32_t rx = h->num_digits - 1;                   // Read  index.
++  uint32_t wx = h->num_digits - 1 + num_new_digits;  // Write index.
++  uint64_t n = 0;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__Y:
+-      return 0xFF000000 | (0x00010101 * ((uint32_t)(row[x])));
+-    case WUFFS_BASE__PIXEL_FORMAT__Y_16LE:
+-      return 0xFF000000 | (0x00010101 * ((uint32_t)(row[(2 * x) + 1])));
+-    case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
+-      return 0xFF000000 | (0x00010101 * ((uint32_t)(row[(2 * x) + 0])));
++  // Repeat: pick up a digit, put down a digit, right to left.
++  while (((int32_t)rx) >= 0) {
++    n += ((uint64_t)(h->digits[rx])) << shift;
++    uint64_t quo = n / 10;
++    uint64_t rem = n - (10 * quo);
++    if (wx < WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION) {
++      h->digits[wx] = (uint8_t)rem;
++    } else if (rem > 0) {
++      h->truncated = true;
++    }
++    n = quo;
++    wx--;
++    rx--;
++  }
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL: {
+-      uint8_t* palette = pb->private_impl.planes[3].ptr;
+-      return wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
+-          wuffs_base__peek_u32le__no_bounds_check(palette +
+-                                                  (4 * ((size_t)row[x]))));
++  // Put down leading digits, right to left.
++  while (n > 0) {
++    uint64_t quo = n / 10;
++    uint64_t rem = n - (10 * quo);
++    if (wx < WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION) {
++      h->digits[wx] = (uint8_t)rem;
++    } else if (rem > 0) {
++      h->truncated = true;
+     }
++    n = quo;
++    wx--;
++  }
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
+-      return wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
+-          wuffs_base__peek_u16le__no_bounds_check(row + (2 * ((size_t)x))));
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR:
+-      return 0xFF000000 |
+-             wuffs_base__peek_u24le__no_bounds_check(row + (3 * ((size_t)x)));
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
+-      return wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
+-          wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x))));
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
+-      return wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
+-          wuffs_base__peek_u64le__no_bounds_check(row + (8 * ((size_t)x))));
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
+-      return 0xFF000000 |
+-             wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x)));
++  // Finish.
++  h->num_digits += num_new_digits;
++  if (h->num_digits > WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION) {
++    h->num_digits = WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION;
++  }
++  h->decimal_point += (int32_t)num_new_digits;
++  wuffs_private_impl__high_prec_dec__trim(h);
++}
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGB:
+-      return wuffs_base__swap_u32_argb_abgr(
+-          0xFF000000 |
+-          wuffs_base__peek_u24le__no_bounds_check(row + (3 * ((size_t)x))));
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
+-      return wuffs_base__swap_u32_argb_abgr(
+-          wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
+-              wuffs_base__peek_u32le__no_bounds_check(row +
+-                                                      (4 * ((size_t)x)))));
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
+-      return wuffs_base__swap_u32_argb_abgr(
+-          wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x))));
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
+-      return wuffs_base__swap_u32_argb_abgr(
+-          0xFF000000 |
+-          wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x))));
++static void  //
++wuffs_private_impl__high_prec_dec__small_rshift(
++    wuffs_private_impl__high_prec_dec* h,
++    uint32_t shift) {
++  uint32_t rx = 0;  // Read  index.
++  uint32_t wx = 0;  // Write index.
++  uint64_t n = 0;
+ 
+-    default:
+-      // TODO: support more formats.
++  // Pick up enough leading digits to cover the first shift.
++  while ((n >> shift) == 0) {
++    if (rx < h->num_digits) {
++      // Read a digit.
++      n = (10 * n) + h->digits[rx++];
++    } else if (n == 0) {
++      // h's number used to be zero and remains zero.
++      return;
++    } else {
++      // Read sufficient implicit trailing zeroes.
++      while ((n >> shift) == 0) {
++        n = 10 * n;
++        rx++;
++      }
+       break;
++    }
++  }
++  h->decimal_point -= ((int32_t)(rx - 1));
++  if (h->decimal_point < -WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE) {
++    // After the shift, h's number is effectively zero.
++    h->num_digits = 0;
++    h->decimal_point = 0;
++    h->truncated = false;
++    return;
+   }
+ 
+-  return 0;
++  // Repeat: pick up a digit, put down a digit, left to right.
++  uint64_t mask = (((uint64_t)(1)) << shift) - 1;
++  while (rx < h->num_digits) {
++    uint8_t new_digit = ((uint8_t)(n >> shift));
++    n = (10 * (n & mask)) + h->digits[rx++];
++    h->digits[wx++] = new_digit;
++  }
++
++  // Put down trailing digits, left to right.
++  while (n > 0) {
++    uint8_t new_digit = ((uint8_t)(n >> shift));
++    n = 10 * (n & mask);
++    if (wx < WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION) {
++      h->digits[wx++] = new_digit;
++    } else if (new_digit > 0) {
++      h->truncated = true;
++    }
++  }
++
++  // Finish.
++  h->num_digits = wx;
++  wuffs_private_impl__high_prec_dec__trim(h);
++}
++
++static void  //
++wuffs_private_impl__high_prec_dec__lshift(wuffs_private_impl__high_prec_dec* h,
++                                          int32_t shift) {
++  if (shift > 0) {
++    while (shift > +WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL) {
++      wuffs_private_impl__high_prec_dec__small_lshift(
++          h, WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL);
++      shift -= WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL;
++    }
++    wuffs_private_impl__high_prec_dec__small_lshift(h, ((uint32_t)(+shift)));
++  } else if (shift < 0) {
++    while (shift < -WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL) {
++      wuffs_private_impl__high_prec_dec__small_rshift(
++          h, WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL);
++      shift += WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL;
++    }
++    wuffs_private_impl__high_prec_dec__small_rshift(h, ((uint32_t)(-shift)));
++  }
+ }
+ 
+ // --------
+ 
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status  //
+-wuffs_base__pixel_buffer__set_color_u32_at(
+-    wuffs_base__pixel_buffer* pb,
+-    uint32_t x,
+-    uint32_t y,
+-    wuffs_base__color_u32_argb_premul color) {
+-  if (!pb) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++// wuffs_private_impl__high_prec_dec__round_etc rounds h's number. For those
++// functions that take an n argument, rounding produces at most n digits (which
++// is not necessarily at most n decimal places). Negative n values are ignored,
++// as well as any n greater than or equal to h's number of digits. The
++// etc__round_just_enough function implicitly chooses an n to implement
++// WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION.
++//
++// Preconditions:
++//  - h is non-NULL.
++//  - h->decimal_point is "not extreme".
++//
++// "Not extreme" means within ±WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE.
++
++static void  //
++wuffs_private_impl__high_prec_dec__round_down(
++    wuffs_private_impl__high_prec_dec* h,
++    int32_t n) {
++  if ((n < 0) || (h->num_digits <= (uint32_t)n)) {
++    return;
+   }
+-  if ((x >= pb->pixcfg.private_impl.width) ||
+-      (y >= pb->pixcfg.private_impl.height)) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  h->num_digits = (uint32_t)(n);
++  wuffs_private_impl__high_prec_dec__trim(h);
++}
++
++static void  //
++wuffs_private_impl__high_prec_dec__round_up(
++    wuffs_private_impl__high_prec_dec* h,
++    int32_t n) {
++  if ((n < 0) || (h->num_digits <= (uint32_t)n)) {
++    return;
+   }
+ 
+-  if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) {
+-    // TODO: support planar formats.
+-    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++  for (n--; n >= 0; n--) {
++    if (h->digits[n] < 9) {
++      h->digits[n]++;
++      h->num_digits = (uint32_t)(n + 1);
++      return;
++    }
+   }
+ 
+-  size_t stride = pb->private_impl.planes[0].stride;
+-  uint8_t* row = pb->private_impl.planes[0].ptr + (stride * ((size_t)y));
++  // The number is all 9s. Change to a single 1 and adjust the decimal point.
++  h->digits[0] = 1;
++  h->num_digits = 1;
++  h->decimal_point++;
++}
+ 
+-  switch (pb->pixcfg.private_impl.pixfmt.repr) {
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
+-      wuffs_base__poke_u32le__no_bounds_check(row + (4 * ((size_t)x)), color);
+-      break;
++static void  //
++wuffs_private_impl__high_prec_dec__round_nearest(
++    wuffs_private_impl__high_prec_dec* h,
++    int32_t n) {
++  if ((n < 0) || (h->num_digits <= (uint32_t)n)) {
++    return;
++  }
++  bool up = h->digits[n] >= 5;
++  if ((h->digits[n] == 5) && ((n + 1) == ((int32_t)(h->num_digits)))) {
++    up = h->truncated ||  //
++         ((n > 0) && ((h->digits[n - 1] & 1) != 0));
++  }
+ 
+-      // Common formats above. Rarer formats below.
+-
+-    case WUFFS_BASE__PIXEL_FORMAT__Y:
+-      wuffs_base__poke_u8__no_bounds_check(
+-          row + ((size_t)x),
+-          wuffs_base__color_u32_argb_premul__as__color_u8_gray(color));
+-      break;
+-    case WUFFS_BASE__PIXEL_FORMAT__Y_16LE:
+-      wuffs_base__poke_u16le__no_bounds_check(
+-          row + (2 * ((size_t)x)),
+-          wuffs_base__color_u32_argb_premul__as__color_u16_gray(color));
+-      break;
+-    case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
+-      wuffs_base__poke_u16be__no_bounds_check(
+-          row + (2 * ((size_t)x)),
+-          wuffs_base__color_u32_argb_premul__as__color_u16_gray(color));
+-      break;
+-
+-    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:
+-      wuffs_base__poke_u8__no_bounds_check(
+-          row + ((size_t)x), wuffs_base__pixel_palette__closest_element(
+-                                 wuffs_base__pixel_buffer__palette(pb),
+-                                 pb->pixcfg.private_impl.pixfmt, color));
+-      break;
+-
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
+-      wuffs_base__poke_u16le__no_bounds_check(
+-          row + (2 * ((size_t)x)),
+-          wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(color));
+-      break;
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR:
+-      wuffs_base__poke_u24le__no_bounds_check(row + (3 * ((size_t)x)), color);
+-      break;
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
+-      wuffs_base__poke_u32le__no_bounds_check(
+-          row + (4 * ((size_t)x)),
+-          wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
+-              color));
+-      break;
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
+-      wuffs_base__poke_u64le__no_bounds_check(
+-          row + (8 * ((size_t)x)),
+-          wuffs_base__color_u32_argb_premul__as__color_u64_argb_nonpremul(
+-              color));
+-      break;
+-
+-    case WUFFS_BASE__PIXEL_FORMAT__RGB:
+-      wuffs_base__poke_u24le__no_bounds_check(
+-          row + (3 * ((size_t)x)), wuffs_base__swap_u32_argb_abgr(color));
+-      break;
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
+-      wuffs_base__poke_u32le__no_bounds_check(
+-          row + (4 * ((size_t)x)),
+-          wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
+-              wuffs_base__swap_u32_argb_abgr(color)));
+-      break;
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
+-      wuffs_base__poke_u32le__no_bounds_check(
+-          row + (4 * ((size_t)x)), wuffs_base__swap_u32_argb_abgr(color));
+-      break;
+-
+-    default:
+-      // TODO: support more formats.
+-      return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++  if (up) {
++    wuffs_private_impl__high_prec_dec__round_up(h, n);
++  } else {
++    wuffs_private_impl__high_prec_dec__round_down(h, n);
+   }
+-
+-  return wuffs_base__make_status(NULL);
+ }
+ 
+-// --------
+-
+-static inline void  //
+-wuffs_base__pixel_buffer__set_color_u32_fill_rect__xx(
+-    wuffs_base__pixel_buffer* pb,
+-    wuffs_base__rect_ie_u32 rect,
+-    uint16_t color) {
+-  size_t stride = pb->private_impl.planes[0].stride;
+-  uint32_t width = wuffs_base__rect_ie_u32__width(&rect);
+-  if ((stride == (2 * ((uint64_t)width))) && (rect.min_incl_x == 0)) {
+-    uint8_t* ptr =
+-        pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y));
+-    uint32_t height = wuffs_base__rect_ie_u32__height(&rect);
+-    size_t n;
+-    for (n = ((size_t)width) * ((size_t)height); n > 0; n--) {
+-      wuffs_base__poke_u16le__no_bounds_check(ptr, color);
+-      ptr += 2;
+-    }
++static void  //
++wuffs_private_impl__high_prec_dec__round_just_enough(
++    wuffs_private_impl__high_prec_dec* h,
++    int32_t exp2,
++    uint64_t mantissa) {
++  // The magic numbers 52 and 53 in this function are because IEEE 754 double
++  // precision has 52 mantissa bits.
++  //
++  // Let f be the floating point number represented by exp2 and mantissa (and
++  // also the number in h): the number (mantissa * (2 ** (exp2 - 52))).
++  //
++  // If f is zero or a small integer, we can return early.
++  if ((mantissa == 0) ||
++      ((exp2 < 53) && (h->decimal_point >= ((int32_t)(h->num_digits))))) {
+     return;
+   }
+ 
+-  uint32_t y;
+-  for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
+-    uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) +
+-                   (2 * ((size_t)rect.min_incl_x));
+-    uint32_t n;
+-    for (n = width; n > 0; n--) {
+-      wuffs_base__poke_u16le__no_bounds_check(ptr, color);
+-      ptr += 2;
+-    }
+-  }
+-}
++  // The smallest normal f has an exp2 of -1022 and a mantissa of (1 << 52).
++  // Subnormal numbers have the same exp2 but a smaller mantissa.
++  static const int32_t min_incl_normal_exp2 = -1022;
++  static const uint64_t min_incl_normal_mantissa = 0x0010000000000000ul;
+ 
+-static inline void  //
+-wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxx(
+-    wuffs_base__pixel_buffer* pb,
+-    wuffs_base__rect_ie_u32 rect,
+-    uint32_t color) {
+-  size_t stride = pb->private_impl.planes[0].stride;
+-  uint32_t width = wuffs_base__rect_ie_u32__width(&rect);
+-  if ((stride == (3 * ((uint64_t)width))) && (rect.min_incl_x == 0)) {
+-    uint8_t* ptr =
+-        pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y));
+-    uint32_t height = wuffs_base__rect_ie_u32__height(&rect);
+-    size_t n;
+-    for (n = ((size_t)width) * ((size_t)height); n > 0; n--) {
+-      wuffs_base__poke_u24le__no_bounds_check(ptr, color);
+-      ptr += 3;
+-    }
+-    return;
++  // Compute lower and upper bounds such that any number between them (possibly
++  // inclusive) will round to f. First, the lower bound. Our number f is:
++  //   ((mantissa + 0)         * (2 ** (  exp2 - 52)))
++  //
++  // The next lowest floating point number is:
++  //   ((mantissa - 1)         * (2 ** (  exp2 - 52)))
++  // unless (mantissa - 1) drops the (1 << 52) bit and exp2 is not the
++  // min_incl_normal_exp2. Either way, call it:
++  //   ((l_mantissa)           * (2 ** (l_exp2 - 52)))
++  //
++  // The lower bound is halfway between them (noting that 52 became 53):
++  //   (((2 * l_mantissa) + 1) * (2 ** (l_exp2 - 53)))
++  int32_t l_exp2 = exp2;
++  uint64_t l_mantissa = mantissa - 1;
++  if ((exp2 > min_incl_normal_exp2) && (mantissa <= min_incl_normal_mantissa)) {
++    l_exp2 = exp2 - 1;
++    l_mantissa = (2 * mantissa) - 1;
+   }
++  wuffs_private_impl__high_prec_dec lower;
++  wuffs_private_impl__high_prec_dec__assign(&lower, (2 * l_mantissa) + 1,
++                                            false);
++  wuffs_private_impl__high_prec_dec__lshift(&lower, l_exp2 - 53);
+ 
+-  uint32_t y;
+-  for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
+-    uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) +
+-                   (3 * ((size_t)rect.min_incl_x));
+-    uint32_t n;
+-    for (n = width; n > 0; n--) {
+-      wuffs_base__poke_u24le__no_bounds_check(ptr, color);
+-      ptr += 3;
+-    }
+-  }
+-}
++  // Next, the upper bound. Our number f is:
++  //   ((mantissa + 0)       * (2 ** (exp2 - 52)))
++  //
++  // The next highest floating point number is:
++  //   ((mantissa + 1)       * (2 ** (exp2 - 52)))
++  //
++  // The upper bound is halfway between them (noting that 52 became 53):
++  //   (((2 * mantissa) + 1) * (2 ** (exp2 - 53)))
++  wuffs_private_impl__high_prec_dec upper;
++  wuffs_private_impl__high_prec_dec__assign(&upper, (2 * mantissa) + 1, false);
++  wuffs_private_impl__high_prec_dec__lshift(&upper, exp2 - 53);
+ 
+-static inline void  //
+-wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx(
+-    wuffs_base__pixel_buffer* pb,
+-    wuffs_base__rect_ie_u32 rect,
+-    uint32_t color) {
+-  size_t stride = pb->private_impl.planes[0].stride;
+-  uint32_t width = wuffs_base__rect_ie_u32__width(&rect);
+-  if ((stride == (4 * ((uint64_t)width))) && (rect.min_incl_x == 0)) {
+-    uint8_t* ptr =
+-        pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y));
+-    uint32_t height = wuffs_base__rect_ie_u32__height(&rect);
+-    size_t n;
+-    for (n = ((size_t)width) * ((size_t)height); n > 0; n--) {
+-      wuffs_base__poke_u32le__no_bounds_check(ptr, color);
+-      ptr += 4;
+-    }
+-    return;
+-  }
++  // The lower and upper bounds are possible outputs only if the original
++  // mantissa is even, so that IEEE round-to-even would round to the original
++  // mantissa and not its neighbors.
++  bool inclusive = (mantissa & 1) == 0;
+ 
+-  uint32_t y;
+-  for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
+-    uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) +
+-                   (4 * ((size_t)rect.min_incl_x));
+-    uint32_t n;
+-    for (n = width; n > 0; n--) {
+-      wuffs_base__poke_u32le__no_bounds_check(ptr, color);
+-      ptr += 4;
+-    }
+-  }
+-}
++  // As we walk the digits, we want to know whether rounding up would fall
++  // within the upper bound. This is tracked by upper_delta:
++  //  - When -1, the digits of h and upper are the same so far.
++  //  - When +0, we saw a difference of 1 between h and upper on a previous
++  //    digit and subsequently only 9s for h and 0s for upper. Thus, rounding
++  //    up may fall outside of the bound if !inclusive.
++  //  - When +1, the difference is greater than 1 and we know that rounding up
++  //    falls within the bound.
++  //
++  // This is a state machine with three states. The numerical value for each
++  // state (-1, +0 or +1) isn't important, other than their order.
++  int upper_delta = -1;
+ 
+-static inline void  //
+-wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxxxxxx(
+-    wuffs_base__pixel_buffer* pb,
+-    wuffs_base__rect_ie_u32 rect,
+-    uint64_t color) {
+-  size_t stride = pb->private_impl.planes[0].stride;
+-  uint32_t width = wuffs_base__rect_ie_u32__width(&rect);
+-  if ((stride == (8 * ((uint64_t)width))) && (rect.min_incl_x == 0)) {
+-    uint8_t* ptr =
+-        pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y));
+-    uint32_t height = wuffs_base__rect_ie_u32__height(&rect);
+-    size_t n;
+-    for (n = ((size_t)width) * ((size_t)height); n > 0; n--) {
+-      wuffs_base__poke_u64le__no_bounds_check(ptr, color);
+-      ptr += 8;
++  // We can now figure out the shortest number of digits required. Walk the
++  // digits until h has distinguished itself from lower or upper.
++  //
++  // The zi and zd variables are indexes and digits, for z in l (lower), h (the
++  // number) and u (upper).
++  //
++  // The lower, h and upper numbers may have their decimal points at different
++  // places. In this case, upper is the longest, so we iterate ui starting from
++  // 0 and iterate li and hi starting from either 0 or -1.
++  int32_t ui = 0;
++  for (;; ui++) {
++    // Calculate hd, the middle number's digit.
++    int32_t hi = ui - upper.decimal_point + h->decimal_point;
++    if (hi >= ((int32_t)(h->num_digits))) {
++      break;
+     }
+-    return;
+-  }
++    uint8_t hd = (((uint32_t)hi) < h->num_digits) ? h->digits[hi] : 0;
+ 
+-  uint32_t y;
+-  for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
+-    uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) +
+-                   (8 * ((size_t)rect.min_incl_x));
+-    uint32_t n;
+-    for (n = width; n > 0; n--) {
+-      wuffs_base__poke_u64le__no_bounds_check(ptr, color);
+-      ptr += 8;
++    // Calculate ld, the lower bound's digit.
++    int32_t li = ui - upper.decimal_point + lower.decimal_point;
++    uint8_t ld = (((uint32_t)li) < lower.num_digits) ? lower.digits[li] : 0;
++
++    // We can round down (truncate) if lower has a different digit than h or if
++    // lower is inclusive and is exactly the result of rounding down (i.e. we
++    // have reached the final digit of lower).
++    bool can_round_down =
++        (ld != hd) ||  //
++        (inclusive && ((li + 1) == ((int32_t)(lower.num_digits))));
++
++    // Calculate ud, the upper bound's digit, and update upper_delta.
++    uint8_t ud = (((uint32_t)ui) < upper.num_digits) ? upper.digits[ui] : 0;
++    if (upper_delta < 0) {
++      if ((hd + 1) < ud) {
++        // For example:
++        // h     = 12345???
++        // upper = 12347???
++        upper_delta = +1;
++      } else if (hd != ud) {
++        // For example:
++        // h     = 12345???
++        // upper = 12346???
++        upper_delta = +0;
++      }
++    } else if (upper_delta == 0) {
++      if ((hd != 9) || (ud != 0)) {
++        // For example:
++        // h     = 1234598?
++        // upper = 1234600?
++        upper_delta = +1;
++      }
+     }
+-  }
+-}
+ 
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status  //
+-wuffs_base__pixel_buffer__set_color_u32_fill_rect(
+-    wuffs_base__pixel_buffer* pb,
+-    wuffs_base__rect_ie_u32 rect,
+-    wuffs_base__color_u32_argb_premul color) {
+-  if (!pb) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  } else if (wuffs_base__rect_ie_u32__is_empty(&rect)) {
+-    return wuffs_base__make_status(NULL);
+-  }
+-  wuffs_base__rect_ie_u32 bounds =
+-      wuffs_base__pixel_config__bounds(&pb->pixcfg);
+-  if (!wuffs_base__rect_ie_u32__contains_rect(&bounds, rect)) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
++    // We can round up if upper has a different digit than h and either upper
++    // is inclusive or upper is bigger than the result of rounding up.
++    bool can_round_up =
++        (upper_delta > 0) ||    //
++        ((upper_delta == 0) &&  //
++         (inclusive || ((ui + 1) < ((int32_t)(upper.num_digits)))));
+ 
+-  if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) {
+-    // TODO: support planar formats.
+-    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++    // If we can round either way, round to nearest. If we can round only one
++    // way, do it. If we can't round, continue the loop.
++    if (can_round_down) {
++      if (can_round_up) {
++        wuffs_private_impl__high_prec_dec__round_nearest(h, hi + 1);
++        return;
++      } else {
++        wuffs_private_impl__high_prec_dec__round_down(h, hi + 1);
++        return;
++      }
++    } else {
++      if (can_round_up) {
++        wuffs_private_impl__high_prec_dec__round_up(h, hi + 1);
++        return;
++      }
++    }
+   }
++}
+ 
+-  switch (pb->pixcfg.private_impl.pixfmt.repr) {
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
+-      wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx(pb, rect, color);
+-      return wuffs_base__make_status(NULL);
+-
+-      // Common formats above. Rarer formats below.
++// --------
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
+-      wuffs_base__pixel_buffer__set_color_u32_fill_rect__xx(
+-          pb, rect,
+-          wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(color));
+-      return wuffs_base__make_status(NULL);
++// wuffs_private_impl__parse_number_f64_eisel_lemire produces the IEEE 754
++// double-precision value for an exact mantissa and base-10 exponent. For
++// example:
++//  - when parsing "12345.678e+02", man is 12345678 and exp10 is -1.
++//  - when parsing "-12", man is 12 and exp10 is 0. Processing the leading
++//    minus sign is the responsibility of the caller, not this function.
++//
++// On success, it returns a non-negative int64_t such that the low 63 bits hold
++// the 11-bit exponent and 52-bit mantissa.
++//
++// On failure, it returns a negative value.
++//
++// The algorithm is based on an original idea by Michael Eisel that was refined
++// by Daniel Lemire. See
++// https://lemire.me/blog/2020/03/10/fast-float-parsing-in-practice/
++// and
++// https://nigeltao.github.io/blog/2020/eisel-lemire.html
++//
++// Preconditions:
++//  - man is non-zero.
++//  - exp10 is in the range [-307 ..= 288], the same range of the
++//    wuffs_private_impl__powers_of_10 array.
++//
++// The exp10 range (and the fact that man is in the range [1 ..= UINT64_MAX],
++// approximately [1 ..= 1.85e+19]) means that (man * (10 ** exp10)) is in the
++// range [1e-307 ..= 1.85e+307]. This is entirely within the range of normal
++// (neither subnormal nor non-finite) f64 values: DBL_MIN and DBL_MAX are
++// approximately 2.23e–308 and 1.80e+308.
++static int64_t  //
++wuffs_private_impl__parse_number_f64_eisel_lemire(uint64_t man, int32_t exp10) {
++  // Look up the (possibly truncated) base-2 representation of (10 ** exp10).
++  // The look-up table was constructed so that it is already normalized: the
++  // table entry's mantissa's MSB (most significant bit) is on.
++  const uint64_t* po10 = &wuffs_private_impl__powers_of_10[exp10 + 307][0];
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR:
+-      wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxx(pb, rect, color);
+-      return wuffs_base__make_status(NULL);
++  // Normalize the man argument. The (man != 0) precondition means that a
++  // non-zero bit exists.
++  uint32_t clz = wuffs_base__count_leading_zeroes_u64(man);
++  man <<= clz;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
+-      wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx(
+-          pb, rect,
+-          wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
+-              color));
+-      return wuffs_base__make_status(NULL);
++  // Calculate the return value's base-2 exponent. We might tweak it by ±1
++  // later, but its initial value comes from a linear scaling of exp10,
++  // converting from power-of-10 to power-of-2, and adjusting by clz.
++  //
++  // The magic constants are:
++  //  - 1087 = 1023 + 64. The 1023 is the f64 exponent bias. The 64 is because
++  //    the look-up table uses 64-bit mantissas.
++  //  - 217706 is such that the ratio 217706 / 65536 ≈ 3.321930 is close enough
++  //    (over the practical range of exp10) to log(10) / log(2) ≈ 3.321928.
++  //  - 65536 = 1<<16 is arbitrary but a power of 2, so division is a shift.
++  //
++  // Equality of the linearly-scaled value and the actual power-of-2, over the
++  // range of exp10 arguments that this function accepts, is confirmed by
++  // script/print-mpb-powers-of-10.go
++  uint64_t ret_exp2 =
++      ((uint64_t)(((217706 * exp10) >> 16) + 1087)) - ((uint64_t)clz);
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
+-      wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxxxxxx(
+-          pb, rect,
+-          wuffs_base__color_u32_argb_premul__as__color_u64_argb_nonpremul(
+-              color));
+-      return wuffs_base__make_status(NULL);
++  // Multiply the two mantissas. Normalization means that both mantissas are at
++  // least (1<<63), so the 128-bit product must be at least (1<<126). The high
++  // 64 bits of the product, x_hi, must therefore be at least (1<<62).
++  //
++  // As a consequence, x_hi has either 0 or 1 leading zeroes. Shifting x_hi
++  // right by either 9 or 10 bits (depending on x_hi's MSB) will therefore
++  // leave the top 10 MSBs (bits 54 ..= 63) off and the 11th MSB (bit 53) on.
++  wuffs_base__multiply_u64__output x = wuffs_base__multiply_u64(man, po10[1]);
++  uint64_t x_hi = x.hi;
++  uint64_t x_lo = x.lo;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
+-      wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx(
+-          pb, rect,
+-          wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
+-              wuffs_base__swap_u32_argb_abgr(color)));
+-      return wuffs_base__make_status(NULL);
++  // Before we shift right by at least 9 bits, recall that the look-up table
++  // entry was possibly truncated. We have so far only calculated a lower bound
++  // for the product (man * e), where e is (10 ** exp10). The upper bound would
++  // add a further (man * 1) to the 128-bit product, which overflows the lower
++  // 64-bit limb if ((x_lo + man) < man).
++  //
++  // If overflow occurs, that adds 1 to x_hi. Since we're about to shift right
++  // by at least 9 bits, that carried 1 can be ignored unless the higher 64-bit
++  // limb's low 9 bits are all on.
++  //
++  // For example, parsing "9999999999999999999" will take the if-true branch
++  // here, since:
++  //  - x_hi = 0x4563918244F3FFFF
++  //  - x_lo = 0x8000000000000000
++  //  - man  = 0x8AC7230489E7FFFF
++  if (((x_hi & 0x1FF) == 0x1FF) && ((x_lo + man) < man)) {
++    // Refine our calculation of (man * e). Before, our approximation of e used
++    // a "low resolution" 64-bit mantissa. Now use a "high resolution" 128-bit
++    // mantissa. We've already calculated x = (man * bits_0_to_63_incl_of_e).
++    // Now calculate y = (man * bits_64_to_127_incl_of_e).
++    wuffs_base__multiply_u64__output y = wuffs_base__multiply_u64(man, po10[0]);
++    uint64_t y_hi = y.hi;
++    uint64_t y_lo = y.lo;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
+-      wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx(
+-          pb, rect, wuffs_base__swap_u32_argb_abgr(color));
+-      return wuffs_base__make_status(NULL);
+-  }
++    // Merge the 128-bit x and 128-bit y, which overlap by 64 bits, to
++    // calculate the 192-bit product of the 64-bit man by the 128-bit e.
++    // As we exit this if-block, we only care about the high 128 bits
++    // (merged_hi and merged_lo) of that 192-bit product.
++    //
++    // For example, parsing "1.234e-45" will take the if-true branch here,
++    // since:
++    //  - x_hi = 0x70B7E3696DB29FFF
++    //  - x_lo = 0xE040000000000000
++    //  - y_hi = 0x33718BBEAB0E0D7A
++    //  - y_lo = 0xA880000000000000
++    uint64_t merged_hi = x_hi;
++    uint64_t merged_lo = x_lo + y_hi;
++    if (merged_lo < x_lo) {
++      merged_hi++;  // Carry the overflow bit.
++    }
+ 
+-  uint32_t y;
+-  for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
+-    uint32_t x;
+-    for (x = rect.min_incl_x; x < rect.max_excl_x; x++) {
+-      wuffs_base__pixel_buffer__set_color_u32_at(pb, x, y, color);
++    // The "high resolution" approximation of e is still a lower bound. Once
++    // again, see if the upper bound is large enough to produce a different
++    // result. This time, if it does, give up instead of reaching for an even
++    // more precise approximation to e.
++    //
++    // This three-part check is similar to the two-part check that guarded the
++    // if block that we're now in, but it has an extra term for the middle 64
++    // bits (checking that adding 1 to merged_lo would overflow).
++    //
++    // For example, parsing "5.9604644775390625e-8" will take the if-true
++    // branch here, since:
++    //  - merged_hi = 0x7FFFFFFFFFFFFFFF
++    //  - merged_lo = 0xFFFFFFFFFFFFFFFF
++    //  - y_lo      = 0x4DB3FFC120988200
++    //  - man       = 0xD3C21BCECCEDA100
++    if (((merged_hi & 0x1FF) == 0x1FF) && ((merged_lo + 1) == 0) &&
++        (y_lo + man < man)) {
++      return -1;
+     }
++
++    // Replace the 128-bit x with merged.
++    x_hi = merged_hi;
++    x_lo = merged_lo;
+   }
+-  return wuffs_base__make_status(NULL);
+-}
+ 
+-// --------
++  // As mentioned above, shifting x_hi right by either 9 or 10 bits will leave
++  // the top 10 MSBs (bits 54 ..= 63) off and the 11th MSB (bit 53) on. If the
++  // MSB (before shifting) was on, adjust ret_exp2 for the larger shift.
++  //
++  // Having bit 53 on (and higher bits off) means that ret_mantissa is a 54-bit
++  // number.
++  uint64_t msb = x_hi >> 63;
++  uint64_t ret_mantissa = x_hi >> (msb + 9);
++  ret_exp2 -= 1 ^ msb;
+ 
+-WUFFS_BASE__MAYBE_STATIC uint8_t  //
+-wuffs_base__pixel_palette__closest_element(
+-    wuffs_base__slice_u8 palette_slice,
+-    wuffs_base__pixel_format palette_format,
+-    wuffs_base__color_u32_argb_premul c) {
+-  size_t n = palette_slice.len / 4;
+-  if (n > (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
+-    n = (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4);
++  // IEEE 754 rounds to-nearest with ties rounded to-even. Rounding to-even can
++  // be tricky. If we're half-way between two exactly representable numbers
++  // (x's low 73 bits are zero and the next 2 bits that matter are "01"), give
++  // up instead of trying to pick the winner.
++  //
++  // Technically, we could tighten the condition by changing "73" to "73 or 74,
++  // depending on msb", but a flat "73" is simpler.
++  //
++  // For example, parsing "1e+23" will take the if-true branch here, since:
++  //  - x_hi          = 0x54B40B1F852BDA00
++  //  - ret_mantissa  = 0x002A5A058FC295ED
++  if ((x_lo == 0) && ((x_hi & 0x1FF) == 0) && ((ret_mantissa & 3) == 1)) {
++    return -1;
+   }
+-  size_t best_index = 0;
+-  uint64_t best_score = 0xFFFFFFFFFFFFFFFF;
+ 
+-  // Work in 16-bit color.
+-  uint32_t ca = 0x101 * (0xFF & (c >> 24));
+-  uint32_t cr = 0x101 * (0xFF & (c >> 16));
+-  uint32_t cg = 0x101 * (0xFF & (c >> 8));
+-  uint32_t cb = 0x101 * (0xFF & (c >> 0));
+-
+-  switch (palette_format.repr) {
+-    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: {
+-      bool nonpremul = palette_format.repr ==
+-                       WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL;
+-
+-      size_t i;
+-      for (i = 0; i < n; i++) {
+-        // Work in 16-bit color.
+-        uint32_t pb = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 0]));
+-        uint32_t pg = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 1]));
+-        uint32_t pr = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 2]));
+-        uint32_t pa = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 3]));
+-
+-        // Convert to premultiplied alpha.
+-        if (nonpremul && (pa != 0xFFFF)) {
+-          pb = (pb * pa) / 0xFFFF;
+-          pg = (pg * pa) / 0xFFFF;
+-          pr = (pr * pa) / 0xFFFF;
+-        }
+-
+-        // These deltas are conceptually int32_t (signed) but after squaring,
+-        // it's equivalent to work in uint32_t (unsigned).
+-        pb -= cb;
+-        pg -= cg;
+-        pr -= cr;
+-        pa -= ca;
+-        uint64_t score = ((uint64_t)(pb * pb)) + ((uint64_t)(pg * pg)) +
+-                         ((uint64_t)(pr * pr)) + ((uint64_t)(pa * pa));
+-        if (best_score > score) {
+-          best_score = score;
+-          best_index = i;
+-        }
+-      }
+-      break;
+-    }
++  // If we're not halfway then it's rounding to-nearest. Starting with a 54-bit
++  // number, carry the lowest bit (bit 0) up if it's on. Regardless of whether
++  // it was on or off, shifting right by one then produces a 53-bit number. If
++  // carrying up overflowed, shift again.
++  ret_mantissa += ret_mantissa & 1;
++  ret_mantissa >>= 1;
++  // This if block is equivalent to (but benchmarks slightly faster than) the
++  // following branchless form:
++  //    uint64_t overflow_adjustment = ret_mantissa >> 53;
++  //    ret_mantissa >>= overflow_adjustment;
++  //    ret_exp2 += overflow_adjustment;
++  //
++  // For example, parsing "7.2057594037927933e+16" will take the if-true
++  // branch here, since:
++  //  - x_hi          = 0x7FFFFFFFFFFFFE80
++  //  - ret_mantissa  = 0x0020000000000000
++  if ((ret_mantissa >> 53) > 0) {
++    ret_mantissa >>= 1;
++    ret_exp2++;
+   }
+ 
+-  return (uint8_t)best_index;
++  // Starting with a 53-bit number, IEEE 754 double-precision normal numbers
++  // have an implicit mantissa bit. Mask that away and keep the low 52 bits.
++  ret_mantissa &= 0x000FFFFFFFFFFFFF;
++
++  // Pack the bits and return.
++  return ((int64_t)(ret_mantissa | (ret_exp2 << 52)));
+ }
+ 
+ // --------
+ 
+-static inline uint32_t  //
+-wuffs_base__composite_nonpremul_nonpremul_u32_axxx(uint32_t dst_nonpremul,
+-                                                   uint32_t src_nonpremul) {
+-  // Extract 16-bit color components.
+-  //
+-  // If the destination is transparent then SRC_OVER is equivalent to SRC: just
+-  // return src_nonpremul. This isn't just an optimization (skipping the rest
+-  // of the function's computation). It also preserves the nonpremul
+-  // distinction between e.g. transparent red and transparent blue that would
+-  // otherwise be lost by converting from nonpremul to premul and back.
+-  uint32_t da = 0x101 * (0xFF & (dst_nonpremul >> 24));
+-  if (da == 0) {
+-    return src_nonpremul;
+-  }
+-  uint32_t dr = 0x101 * (0xFF & (dst_nonpremul >> 16));
+-  uint32_t dg = 0x101 * (0xFF & (dst_nonpremul >> 8));
+-  uint32_t db = 0x101 * (0xFF & (dst_nonpremul >> 0));
+-  uint32_t sa = 0x101 * (0xFF & (src_nonpremul >> 24));
+-  uint32_t sr = 0x101 * (0xFF & (src_nonpremul >> 16));
+-  uint32_t sg = 0x101 * (0xFF & (src_nonpremul >> 8));
+-  uint32_t sb = 0x101 * (0xFF & (src_nonpremul >> 0));
+-
+-  // Convert dst from nonpremul to premul.
+-  dr = (dr * da) / 0xFFFF;
+-  dg = (dg * da) / 0xFFFF;
+-  db = (db * da) / 0xFFFF;
++static wuffs_base__result_f64  //
++wuffs_private_impl__parse_number_f64_special(wuffs_base__slice_u8 s,
++                                             uint32_t options) {
++  do {
++    if (options & WUFFS_BASE__PARSE_NUMBER_FXX__REJECT_INF_AND_NAN) {
++      goto fail;
++    }
+ 
+-  // Calculate the inverse of the src-alpha: how much of the dst to keep.
+-  uint32_t ia = 0xFFFF - sa;
++    uint8_t* p = s.ptr;
++    uint8_t* q = s.ptr + s.len;
+ 
+-  // Composite src (nonpremul) over dst (premul).
+-  da = sa + ((da * ia) / 0xFFFF);
+-  dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
+-  dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
+-  db = ((sb * sa) + (db * ia)) / 0xFFFF;
++    for (; (p < q) && (*p == '_'); p++) {
++    }
++    if (p >= q) {
++      goto fail;
++    }
+ 
+-  // Convert dst from premul to nonpremul.
+-  if (da != 0) {
+-    dr = (dr * 0xFFFF) / da;
+-    dg = (dg * 0xFFFF) / da;
+-    db = (db * 0xFFFF) / da;
+-  }
++    // Parse sign.
++    bool negative = false;
++    do {
++      if (*p == '+') {
++        p++;
++      } else if (*p == '-') {
++        negative = true;
++        p++;
++      } else {
++        break;
++      }
++      for (; (p < q) && (*p == '_'); p++) {
++      }
++    } while (0);
++    if (p >= q) {
++      goto fail;
++    }
+ 
+-  // Convert from 16-bit color to 8-bit color.
+-  da >>= 8;
+-  dr >>= 8;
+-  dg >>= 8;
+-  db >>= 8;
++    bool nan = false;
++    switch (p[0]) {
++      case 'I':
++      case 'i':
++        if (((q - p) < 3) ||                     //
++            ((p[1] != 'N') && (p[1] != 'n')) ||  //
++            ((p[2] != 'F') && (p[2] != 'f'))) {
++          goto fail;
++        }
++        p += 3;
+ 
+-  // Combine components.
+-  return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
+-}
++        if ((p >= q) || (*p == '_')) {
++          break;
++        } else if (((q - p) < 5) ||                     //
++                   ((p[0] != 'I') && (p[0] != 'i')) ||  //
++                   ((p[1] != 'N') && (p[1] != 'n')) ||  //
++                   ((p[2] != 'I') && (p[2] != 'i')) ||  //
++                   ((p[3] != 'T') && (p[3] != 't')) ||  //
++                   ((p[4] != 'Y') && (p[4] != 'y'))) {
++          goto fail;
++        }
++        p += 5;
+ 
+-static inline uint64_t  //
+-wuffs_base__composite_nonpremul_nonpremul_u64_axxx(uint64_t dst_nonpremul,
+-                                                   uint64_t src_nonpremul) {
+-  // Extract components.
+-  //
+-  // If the destination is transparent then SRC_OVER is equivalent to SRC: just
+-  // return src_nonpremul. This isn't just an optimization (skipping the rest
+-  // of the function's computation). It also preserves the nonpremul
+-  // distinction between e.g. transparent red and transparent blue that would
+-  // otherwise be lost by converting from nonpremul to premul and back.
+-  uint64_t da = 0xFFFF & (dst_nonpremul >> 48);
+-  if (da == 0) {
+-    return src_nonpremul;
+-  }
+-  uint64_t dr = 0xFFFF & (dst_nonpremul >> 32);
+-  uint64_t dg = 0xFFFF & (dst_nonpremul >> 16);
+-  uint64_t db = 0xFFFF & (dst_nonpremul >> 0);
+-  uint64_t sa = 0xFFFF & (src_nonpremul >> 48);
+-  uint64_t sr = 0xFFFF & (src_nonpremul >> 32);
+-  uint64_t sg = 0xFFFF & (src_nonpremul >> 16);
+-  uint64_t sb = 0xFFFF & (src_nonpremul >> 0);
++        if ((p >= q) || (*p == '_')) {
++          break;
++        }
++        goto fail;
+ 
+-  // Convert dst from nonpremul to premul.
+-  dr = (dr * da) / 0xFFFF;
+-  dg = (dg * da) / 0xFFFF;
+-  db = (db * da) / 0xFFFF;
++      case 'N':
++      case 'n':
++        if (((q - p) < 3) ||                     //
++            ((p[1] != 'A') && (p[1] != 'a')) ||  //
++            ((p[2] != 'N') && (p[2] != 'n'))) {
++          goto fail;
++        }
++        p += 3;
+ 
+-  // Calculate the inverse of the src-alpha: how much of the dst to keep.
+-  uint64_t ia = 0xFFFF - sa;
++        if ((p >= q) || (*p == '_')) {
++          nan = true;
++          break;
++        }
++        goto fail;
+ 
+-  // Composite src (nonpremul) over dst (premul).
+-  da = sa + ((da * ia) / 0xFFFF);
+-  dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
+-  dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
+-  db = ((sb * sa) + (db * ia)) / 0xFFFF;
++      default:
++        goto fail;
++    }
+ 
+-  // Convert dst from premul to nonpremul.
+-  if (da != 0) {
+-    dr = (dr * 0xFFFF) / da;
+-    dg = (dg * 0xFFFF) / da;
+-    db = (db * 0xFFFF) / da;
+-  }
++    // Finish.
++    for (; (p < q) && (*p == '_'); p++) {
++    }
++    if (p != q) {
++      goto fail;
++    }
++    wuffs_base__result_f64 ret;
++    ret.status.repr = NULL;
++    ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(
++        (nan ? 0x7FFFFFFFFFFFFFFF : 0x7FF0000000000000) |
++        (negative ? 0x8000000000000000 : 0));
++    return ret;
++  } while (0);
+ 
+-  // Combine components.
+-  return (db << 0) | (dg << 16) | (dr << 32) | (da << 48);
++fail:
++  do {
++    wuffs_base__result_f64 ret;
++    ret.status.repr = wuffs_base__error__bad_argument;
++    ret.value = 0;
++    return ret;
++  } while (0);
+ }
+ 
+-static inline uint32_t  //
+-wuffs_base__composite_nonpremul_premul_u32_axxx(uint32_t dst_nonpremul,
+-                                                uint32_t src_premul) {
+-  // Extract 16-bit color components.
+-  uint32_t da = 0x101 * (0xFF & (dst_nonpremul >> 24));
+-  uint32_t dr = 0x101 * (0xFF & (dst_nonpremul >> 16));
+-  uint32_t dg = 0x101 * (0xFF & (dst_nonpremul >> 8));
+-  uint32_t db = 0x101 * (0xFF & (dst_nonpremul >> 0));
+-  uint32_t sa = 0x101 * (0xFF & (src_premul >> 24));
+-  uint32_t sr = 0x101 * (0xFF & (src_premul >> 16));
+-  uint32_t sg = 0x101 * (0xFF & (src_premul >> 8));
+-  uint32_t sb = 0x101 * (0xFF & (src_premul >> 0));
++WUFFS_BASE__MAYBE_STATIC wuffs_base__result_f64  //
++wuffs_private_impl__high_prec_dec__to_f64(wuffs_private_impl__high_prec_dec* h,
++                                          uint32_t options) {
++  do {
++    // powers converts decimal powers of 10 to binary powers of 2. For example,
++    // (10000 >> 13) is 1. It stops before the elements exceed 60, also known
++    // as WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL.
++    //
++    // This rounds down (1<<13 is a lower bound for 1e4). Adding 1 to the array
++    // element value rounds up (1<<14 is an upper bound for 1e4) while staying
++    // at or below WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL.
++    //
++    // When starting in the range [1e+1 .. 1e+2] (i.e. h->decimal_point == +2),
++    // powers[2] == 6 and so:
++    //  - Right shifting by 6+0 produces the range [10/64 .. 100/64] =
++    //    [0.156250 .. 1.56250]. The resultant h->decimal_point is +0 or +1.
++    //  - Right shifting by 6+1 produces the range [10/128 .. 100/128] =
++    //    [0.078125 .. 0.78125]. The resultant h->decimal_point is -1 or -0.
++    //
++    // When starting in the range [1e-3 .. 1e-2] (i.e. h->decimal_point == -2),
++    // powers[2] == 6 and so:
++    //  - Left shifting by 6+0 produces the range [0.001*64 .. 0.01*64] =
++    //    [0.064 .. 0.64]. The resultant h->decimal_point is -1 or -0.
++    //  - Left shifting by 6+1 produces the range [0.001*128 .. 0.01*128] =
++    //    [0.128 .. 1.28]. The resultant h->decimal_point is +0 or +1.
++    //
++    // Thus, when targeting h->decimal_point being +0 or +1, use (powers[n]+0)
++    // when right shifting but (powers[n]+1) when left shifting.
++    static const uint32_t num_powers = 19;
++    static const uint8_t powers[19] = {
++        0,  3,  6,  9,  13, 16, 19, 23, 26, 29,  //
++        33, 36, 39, 43, 46, 49, 53, 56, 59,      //
++    };
+ 
+-  // Convert dst from nonpremul to premul.
+-  dr = (dr * da) / 0xFFFF;
+-  dg = (dg * da) / 0xFFFF;
+-  db = (db * da) / 0xFFFF;
++    // Handle zero and obvious extremes. The largest and smallest positive
++    // finite f64 values are approximately 1.8e+308 and 4.9e-324.
++    if ((h->num_digits == 0) || (h->decimal_point < -326)) {
++      goto zero;
++    } else if (h->decimal_point > 310) {
++      goto infinity;
++    }
+ 
+-  // Calculate the inverse of the src-alpha: how much of the dst to keep.
+-  uint32_t ia = 0xFFFF - sa;
++    // Try the fast Eisel-Lemire algorithm again. Calculating the (man, exp10)
++    // pair from the high_prec_dec h is more correct but slower than the
++    // approach taken in wuffs_base__parse_number_f64. The latter is optimized
++    // for the common cases (e.g. assuming no underscores or a leading '+'
++    // sign) rather than the full set of cases allowed by the Wuffs API.
++    //
++    // When we have 19 or fewer mantissa digits, run Eisel-Lemire once (trying
++    // for an exact result). When we have more than 19 mantissa digits, run it
++    // twice to get a lower and upper bound. We still have an exact result
++    // (within f64's rounding margin) if both bounds are equal (and valid).
++    uint32_t i_max = h->num_digits;
++    if (i_max > 19) {
++      i_max = 19;
++    }
++    int32_t exp10 = h->decimal_point - ((int32_t)i_max);
++    if ((-307 <= exp10) && (exp10 <= 288)) {
++      uint64_t man = 0;
++      uint32_t i;
++      for (i = 0; i < i_max; i++) {
++        man = (10 * man) + h->digits[i];
++      }
++      while (man != 0) {  // The 'while' is just an 'if' that we can 'break'.
++        int64_t r0 =
++            wuffs_private_impl__parse_number_f64_eisel_lemire(man + 0, exp10);
++        if (r0 < 0) {
++          break;
++        } else if (h->num_digits > 19) {
++          int64_t r1 =
++              wuffs_private_impl__parse_number_f64_eisel_lemire(man + 1, exp10);
++          if (r1 != r0) {
++            break;
++          }
++        }
++        wuffs_base__result_f64 ret;
++        ret.status.repr = NULL;
++        ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(
++            ((uint64_t)r0) | (((uint64_t)(h->negative)) << 63));
++        return ret;
++      }
++    }
+ 
+-  // Composite src (premul) over dst (premul).
+-  da = sa + ((da * ia) / 0xFFFF);
+-  dr = sr + ((dr * ia) / 0xFFFF);
+-  dg = sg + ((dg * ia) / 0xFFFF);
+-  db = sb + ((db * ia) / 0xFFFF);
++    // When Eisel-Lemire fails, fall back to Simple Decimal Conversion. See
++    // https://nigeltao.github.io/blog/2020/parse-number-f64-simple.html
++    //
++    // Scale by powers of 2 until we're in the range [0.1 .. 10]. Equivalently,
++    // that h->decimal_point is +0 or +1.
++    //
++    // First we shift right while at or above 10...
++    const int32_t f64_bias = -1023;
++    int32_t exp2 = 0;
++    while (h->decimal_point > 1) {
++      uint32_t n = (uint32_t)(+h->decimal_point);
++      uint32_t shift = (n < num_powers)
++                           ? powers[n]
++                           : WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL;
+ 
+-  // Convert dst from premul to nonpremul.
+-  if (da != 0) {
+-    dr = (dr * 0xFFFF) / da;
+-    dg = (dg * 0xFFFF) / da;
+-    db = (db * 0xFFFF) / da;
+-  }
++      wuffs_private_impl__high_prec_dec__small_rshift(h, shift);
++      if (h->decimal_point < -WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE) {
++        goto zero;
++      }
++      exp2 += (int32_t)shift;
++    }
++    // ...then we shift left while below 0.1.
++    while (h->decimal_point < 0) {
++      uint32_t shift;
++      uint32_t n = (uint32_t)(-h->decimal_point);
++      shift = (n < num_powers)
++                  // The +1 is per "when targeting h->decimal_point being +0 or
++                  // +1... when left shifting" in the powers comment above.
++                  ? (powers[n] + 1u)
++                  : WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL;
+ 
+-  // Convert from 16-bit color to 8-bit color.
+-  da >>= 8;
+-  dr >>= 8;
+-  dg >>= 8;
+-  db >>= 8;
++      wuffs_private_impl__high_prec_dec__small_lshift(h, shift);
++      if (h->decimal_point > +WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE) {
++        goto infinity;
++      }
++      exp2 -= (int32_t)shift;
++    }
+ 
+-  // Combine components.
+-  return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
+-}
++    // To get from "in the range [0.1 .. 10]" to "in the range [1 .. 2]" (which
++    // will give us our exponent in base-2), the mantissa's first 3 digits will
++    // determine the final left shift, equal to 52 (the number of explicit f64
++    // bits) plus an additional adjustment.
++    int man3 = (100 * h->digits[0]) +
++               ((h->num_digits > 1) ? (10 * h->digits[1]) : 0) +
++               ((h->num_digits > 2) ? h->digits[2] : 0);
++    int32_t additional_lshift = 0;
++    if (h->decimal_point == 0) {  // The value is in [0.1 .. 1].
++      if (man3 < 125) {
++        additional_lshift = +4;
++      } else if (man3 < 250) {
++        additional_lshift = +3;
++      } else if (man3 < 500) {
++        additional_lshift = +2;
++      } else {
++        additional_lshift = +1;
++      }
++    } else {  // The value is in [1 .. 10].
++      if (man3 < 200) {
++        additional_lshift = -0;
++      } else if (man3 < 400) {
++        additional_lshift = -1;
++      } else if (man3 < 800) {
++        additional_lshift = -2;
++      } else {
++        additional_lshift = -3;
++      }
++    }
++    exp2 -= additional_lshift;
++    uint32_t final_lshift = (uint32_t)(52 + additional_lshift);
+ 
+-static inline uint64_t  //
+-wuffs_base__composite_nonpremul_premul_u64_axxx(uint64_t dst_nonpremul,
+-                                                uint64_t src_premul) {
+-  // Extract components.
+-  uint64_t da = 0xFFFF & (dst_nonpremul >> 48);
+-  uint64_t dr = 0xFFFF & (dst_nonpremul >> 32);
+-  uint64_t dg = 0xFFFF & (dst_nonpremul >> 16);
+-  uint64_t db = 0xFFFF & (dst_nonpremul >> 0);
+-  uint64_t sa = 0xFFFF & (src_premul >> 48);
+-  uint64_t sr = 0xFFFF & (src_premul >> 32);
+-  uint64_t sg = 0xFFFF & (src_premul >> 16);
+-  uint64_t sb = 0xFFFF & (src_premul >> 0);
++    // The minimum normal exponent is (f64_bias + 1).
++    while ((f64_bias + 1) > exp2) {
++      uint32_t n = (uint32_t)((f64_bias + 1) - exp2);
++      if (n > WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL) {
++        n = WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL;
++      }
++      wuffs_private_impl__high_prec_dec__small_rshift(h, n);
++      exp2 += (int32_t)n;
++    }
+ 
+-  // Convert dst from nonpremul to premul.
+-  dr = (dr * da) / 0xFFFF;
+-  dg = (dg * da) / 0xFFFF;
+-  db = (db * da) / 0xFFFF;
++    // Check for overflow.
++    if ((exp2 - f64_bias) >= 0x07FF) {  // (1 << 11) - 1.
++      goto infinity;
++    }
+ 
+-  // Calculate the inverse of the src-alpha: how much of the dst to keep.
+-  uint64_t ia = 0xFFFF - sa;
++    // Extract 53 bits for the mantissa (in base-2).
++    wuffs_private_impl__high_prec_dec__small_lshift(h, final_lshift);
++    uint64_t man2 = wuffs_private_impl__high_prec_dec__rounded_integer(h);
+ 
+-  // Composite src (premul) over dst (premul).
+-  da = sa + ((da * ia) / 0xFFFF);
+-  dr = sr + ((dr * ia) / 0xFFFF);
+-  dg = sg + ((dg * ia) / 0xFFFF);
+-  db = sb + ((db * ia) / 0xFFFF);
++    // Rounding might have added one bit. If so, shift and re-check overflow.
++    if ((man2 >> 53) != 0) {
++      man2 >>= 1;
++      exp2++;
++      if ((exp2 - f64_bias) >= 0x07FF) {  // (1 << 11) - 1.
++        goto infinity;
++      }
++    }
+ 
+-  // Convert dst from premul to nonpremul.
+-  if (da != 0) {
+-    dr = (dr * 0xFFFF) / da;
+-    dg = (dg * 0xFFFF) / da;
+-    db = (db * 0xFFFF) / da;
+-  }
++    // Handle subnormal numbers.
++    if ((man2 >> 52) == 0) {
++      exp2 = f64_bias;
++    }
+ 
+-  // Combine components.
+-  return (db << 0) | (dg << 16) | (dr << 32) | (da << 48);
+-}
++    // Pack the bits and return.
++    uint64_t exp2_bits =
++        (uint64_t)((exp2 - f64_bias) & 0x07FF);              // (1 << 11) - 1.
++    uint64_t bits = (man2 & 0x000FFFFFFFFFFFFF) |            // (1 << 52) - 1.
++                    (exp2_bits << 52) |                      //
++                    (h->negative ? 0x8000000000000000 : 0);  // (1 << 63).
+ 
+-static inline uint32_t  //
+-wuffs_base__composite_premul_nonpremul_u32_axxx(uint32_t dst_premul,
+-                                                uint32_t src_nonpremul) {
+-  // Extract 16-bit color components.
+-  uint32_t da = 0x101 * (0xFF & (dst_premul >> 24));
+-  uint32_t dr = 0x101 * (0xFF & (dst_premul >> 16));
+-  uint32_t dg = 0x101 * (0xFF & (dst_premul >> 8));
+-  uint32_t db = 0x101 * (0xFF & (dst_premul >> 0));
+-  uint32_t sa = 0x101 * (0xFF & (src_nonpremul >> 24));
+-  uint32_t sr = 0x101 * (0xFF & (src_nonpremul >> 16));
+-  uint32_t sg = 0x101 * (0xFF & (src_nonpremul >> 8));
+-  uint32_t sb = 0x101 * (0xFF & (src_nonpremul >> 0));
++    wuffs_base__result_f64 ret;
++    ret.status.repr = NULL;
++    ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(bits);
++    return ret;
++  } while (0);
+ 
+-  // Calculate the inverse of the src-alpha: how much of the dst to keep.
+-  uint32_t ia = 0xFFFF - sa;
++zero:
++  do {
++    uint64_t bits = h->negative ? 0x8000000000000000 : 0;
+ 
+-  // Composite src (nonpremul) over dst (premul).
+-  da = sa + ((da * ia) / 0xFFFF);
+-  dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
+-  dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
+-  db = ((sb * sa) + (db * ia)) / 0xFFFF;
++    wuffs_base__result_f64 ret;
++    ret.status.repr = NULL;
++    ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(bits);
++    return ret;
++  } while (0);
+ 
+-  // Convert from 16-bit color to 8-bit color.
+-  da >>= 8;
+-  dr >>= 8;
+-  dg >>= 8;
+-  db >>= 8;
++infinity:
++  do {
++    if (options & WUFFS_BASE__PARSE_NUMBER_FXX__REJECT_INF_AND_NAN) {
++      wuffs_base__result_f64 ret;
++      ret.status.repr = wuffs_base__error__bad_argument;
++      ret.value = 0;
++      return ret;
++    }
+ 
+-  // Combine components.
+-  return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
+-}
++    uint64_t bits = h->negative ? 0xFFF0000000000000 : 0x7FF0000000000000;
+ 
+-static inline uint64_t  //
+-wuffs_base__composite_premul_nonpremul_u64_axxx(uint64_t dst_premul,
+-                                                uint64_t src_nonpremul) {
+-  // Extract components.
+-  uint64_t da = 0xFFFF & (dst_premul >> 48);
+-  uint64_t dr = 0xFFFF & (dst_premul >> 32);
+-  uint64_t dg = 0xFFFF & (dst_premul >> 16);
+-  uint64_t db = 0xFFFF & (dst_premul >> 0);
+-  uint64_t sa = 0xFFFF & (src_nonpremul >> 48);
+-  uint64_t sr = 0xFFFF & (src_nonpremul >> 32);
+-  uint64_t sg = 0xFFFF & (src_nonpremul >> 16);
+-  uint64_t sb = 0xFFFF & (src_nonpremul >> 0);
+-
+-  // Calculate the inverse of the src-alpha: how much of the dst to keep.
+-  uint64_t ia = 0xFFFF - sa;
+-
+-  // Composite src (nonpremul) over dst (premul).
+-  da = sa + ((da * ia) / 0xFFFF);
+-  dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
+-  dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
+-  db = ((sb * sa) + (db * ia)) / 0xFFFF;
+-
+-  // Combine components.
+-  return (db << 0) | (dg << 16) | (dr << 32) | (da << 48);
++    wuffs_base__result_f64 ret;
++    ret.status.repr = NULL;
++    ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(bits);
++    return ret;
++  } while (0);
+ }
+ 
+-static inline uint32_t  //
+-wuffs_base__composite_premul_premul_u32_axxx(uint32_t dst_premul,
+-                                             uint32_t src_premul) {
+-  // Extract 16-bit color components.
+-  uint32_t da = 0x101 * (0xFF & (dst_premul >> 24));
+-  uint32_t dr = 0x101 * (0xFF & (dst_premul >> 16));
+-  uint32_t dg = 0x101 * (0xFF & (dst_premul >> 8));
+-  uint32_t db = 0x101 * (0xFF & (dst_premul >> 0));
+-  uint32_t sa = 0x101 * (0xFF & (src_premul >> 24));
+-  uint32_t sr = 0x101 * (0xFF & (src_premul >> 16));
+-  uint32_t sg = 0x101 * (0xFF & (src_premul >> 8));
+-  uint32_t sb = 0x101 * (0xFF & (src_premul >> 0));
+-
+-  // Calculate the inverse of the src-alpha: how much of the dst to keep.
+-  uint32_t ia = 0xFFFF - sa;
+-
+-  // Composite src (premul) over dst (premul).
+-  da = sa + ((da * ia) / 0xFFFF);
+-  dr = sr + ((dr * ia) / 0xFFFF);
+-  dg = sg + ((dg * ia) / 0xFFFF);
+-  db = sb + ((db * ia) / 0xFFFF);
+-
+-  // Convert from 16-bit color to 8-bit color.
+-  da >>= 8;
+-  dr >>= 8;
+-  dg >>= 8;
+-  db >>= 8;
+-
+-  // Combine components.
+-  return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
++static inline bool  //
++wuffs_private_impl__is_decimal_digit(uint8_t c) {
++  return ('0' <= c) && (c <= '9');
+ }
+ 
+-// --------
++WUFFS_BASE__MAYBE_STATIC wuffs_base__result_f64  //
++wuffs_base__parse_number_f64(wuffs_base__slice_u8 s, uint32_t options) {
++  // In practice, almost all "dd.ddddE±xxx" numbers can be represented
++  // losslessly by a uint64_t mantissa "dddddd" and an int32_t base-10
++  // exponent, adjusting "xxx" for the position (if present) of the decimal
++  // separator '.' or ','.
++  //
++  // This (u64 man, i32 exp10) data structure is superficially similar to the
++  // "Do It Yourself Floating Point" type from Loitsch (†), but the exponent
++  // here is base-10, not base-2.
++  //
++  // If s's number fits in a (man, exp10), parse that pair with the
++  // Eisel-Lemire algorithm. If not, or if Eisel-Lemire fails, parsing s with
++  // the fallback algorithm is slower but comprehensive.
++  //
++  // † "Printing Floating-Point Numbers Quickly and Accurately with Integers"
++  // (https://www.cs.tufts.edu/~nr/cs257/archive/florian-loitsch/printf.pdf).
++  // Florian Loitsch is also the primary contributor to
++  // https://github.com/google/double-conversion
++  do {
++    // Calculating that (man, exp10) pair needs to stay within s's bounds.
++    // Provided that s isn't extremely long, work on a NUL-terminated copy of
++    // s's contents. The NUL byte isn't a valid part of "±dd.ddddE±xxx".
++    //
++    // As the pointer p walks the contents, it's faster to repeatedly check "is
++    // *p a valid digit" than "is p within bounds and *p a valid digit".
++    if (s.len >= 256) {
++      goto fallback;
++    }
++    uint8_t z[256];
++    memcpy(&z[0], s.ptr, s.len);
++    z[s.len] = 0;
++    const uint8_t* p = &z[0];
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__squash_align4_bgr_565_8888(uint8_t* dst_ptr,
+-                                                       size_t dst_len,
+-                                                       const uint8_t* src_ptr,
+-                                                       size_t src_len,
+-                                                       bool nonpremul) {
+-  size_t len = (dst_len < src_len ? dst_len : src_len) / 4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
++    // Look for a leading minus sign. Technically, we could also look for an
++    // optional plus sign, but the "script/process-json-numbers.c with -p"
++    // benchmark is noticably slower if we do. It's optional and, in practice,
++    // usually absent. Let the fallback catch it.
++    bool negative = (*p == '-');
++    if (negative) {
++      p++;
++    }
+ 
+-  size_t n = len;
+-  while (n--) {
+-    uint32_t argb = wuffs_base__peek_u32le__no_bounds_check(s);
+-    if (nonpremul) {
+-      argb =
+-          wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(argb);
++    // After walking "dd.dddd", comparing p later with p now will produce the
++    // number of "d"s and "."s.
++    const uint8_t* const start_of_digits_ptr = p;
++
++    // Walk the "d"s before a '.', 'E', NUL byte, etc. If it starts with '0',
++    // it must be a single '0'. If it starts with a non-zero decimal digit, it
++    // can be a sequence of decimal digits.
++    //
++    // Update the man variable during the walk. It's OK if man overflows now.
++    // We'll detect that later.
++    uint64_t man;
++    if (*p == '0') {
++      man = 0;
++      p++;
++      if (wuffs_private_impl__is_decimal_digit(*p)) {
++        goto fallback;
++      }
++    } else if (wuffs_private_impl__is_decimal_digit(*p)) {
++      man = ((uint8_t)(*p - '0'));
++      p++;
++      for (; wuffs_private_impl__is_decimal_digit(*p); p++) {
++        man = (10 * man) + ((uint8_t)(*p - '0'));
++      }
++    } else {
++      goto fallback;
+     }
+-    uint32_t b5 = 0x1F & (argb >> (8 - 5));
+-    uint32_t g6 = 0x3F & (argb >> (16 - 6));
+-    uint32_t r5 = 0x1F & (argb >> (24 - 5));
+-    uint32_t alpha = argb & 0xFF000000;
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d, alpha | (r5 << 11) | (g6 << 5) | (b5 << 0));
+-    s += 4;
+-    d += 4;
+-  }
+-  return len;
+-}
+ 
+-// --------
++    // Walk the "d"s after the optional decimal separator ('.' or ','),
++    // updating the man and exp10 variables.
++    int32_t exp10 = 0;
++    if (*p ==
++        ((options & WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
++             ? ','
++             : '.')) {
++      p++;
++      const uint8_t* first_after_separator_ptr = p;
++      if (!wuffs_private_impl__is_decimal_digit(*p)) {
++        goto fallback;
++      }
++      man = (10 * man) + ((uint8_t)(*p - '0'));
++      p++;
++      for (; wuffs_private_impl__is_decimal_digit(*p); p++) {
++        man = (10 * man) + ((uint8_t)(*p - '0'));
++      }
++      exp10 = ((int32_t)(first_after_separator_ptr - p));
++    }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__swap_rgb_bgr(uint8_t* dst_ptr,
+-                                         size_t dst_len,
+-                                         uint8_t* dst_palette_ptr,
+-                                         size_t dst_palette_len,
+-                                         const uint8_t* src_ptr,
+-                                         size_t src_len) {
+-  size_t len = (dst_len < src_len ? dst_len : src_len) / 3;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
++    // Count the number of digits:
++    //  - for an input of "314159",  digit_count is 6.
++    //  - for an input of "3.14159", digit_count is 7.
++    //
++    // This is off-by-one if there is a decimal separator. That's OK for now.
++    // We'll correct for that later. The "script/process-json-numbers.c with
++    // -p" benchmark is noticably slower if we try to correct for that now.
++    uint32_t digit_count = (uint32_t)(p - start_of_digits_ptr);
+ 
+-  size_t n = len;
+-  while (n--) {
+-    uint8_t s0 = s[0];
+-    uint8_t s1 = s[1];
+-    uint8_t s2 = s[2];
+-    d[0] = s2;
+-    d[1] = s1;
+-    d[2] = s0;
+-    s += 3;
+-    d += 3;
+-  }
+-  return len;
+-}
++    // Update exp10 for the optional exponent, starting with 'E' or 'e'.
++    if ((*p | 0x20) == 'e') {
++      p++;
++      int32_t exp_sign = +1;
++      if (*p == '-') {
++        p++;
++        exp_sign = -1;
++      } else if (*p == '+') {
++        p++;
++      }
++      if (!wuffs_private_impl__is_decimal_digit(*p)) {
++        goto fallback;
++      }
++      int32_t exp_num = ((uint8_t)(*p - '0'));
++      p++;
++      // The rest of the exp_num walking has a peculiar control flow but, once
++      // again, the "script/process-json-numbers.c with -p" benchmark is
++      // sensitive to alternative formulations.
++      if (wuffs_private_impl__is_decimal_digit(*p)) {
++        exp_num = (10 * exp_num) + ((uint8_t)(*p - '0'));
++        p++;
++      }
++      if (wuffs_private_impl__is_decimal_digit(*p)) {
++        exp_num = (10 * exp_num) + ((uint8_t)(*p - '0'));
++        p++;
++      }
++      while (wuffs_private_impl__is_decimal_digit(*p)) {
++        if (exp_num > 0x1000000) {
++          goto fallback;
++        }
++        exp_num = (10 * exp_num) + ((uint8_t)(*p - '0'));
++        p++;
++      }
++      exp10 += exp_sign * exp_num;
++    }
+ 
+-// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__swap_rgbx_bgrx__x86_sse42(uint8_t* dst_ptr,
+-                                                      size_t dst_len,
+-                                                      uint8_t* dst_palette_ptr,
+-                                                      size_t dst_palette_len,
+-                                                      const uint8_t* src_ptr,
+-                                                      size_t src_len) {
+-  size_t len = (dst_len < src_len ? dst_len : src_len) / 4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++    // The Wuffs API is that the original slice has no trailing data. It also
++    // allows underscores, which we don't catch here but the fallback should.
++    if (p != &z[s.len]) {
++      goto fallback;
++    }
+ 
+-  __m128i shuffle = _mm_set_epi8(+0x0F, +0x0C, +0x0D, +0x0E,  //
+-                                 +0x0B, +0x08, +0x09, +0x0A,  //
+-                                 +0x07, +0x04, +0x05, +0x06,  //
+-                                 +0x03, +0x00, +0x01, +0x02);
++    // Check that the uint64_t typed man variable has not overflowed, based on
++    // digit_count.
++    //
++    // For reference:
++    //   - (1 << 63) is  9223372036854775808, which has 19 decimal digits.
++    //   - (1 << 64) is 18446744073709551616, which has 20 decimal digits.
++    //   - 19 nines,  9999999999999999999, is  0x8AC7230489E7FFFF, which has 64
++    //     bits and 16 hexadecimal digits.
++    //   - 20 nines, 99999999999999999999, is 0x56BC75E2D630FFFFF, which has 67
++    //     bits and 17 hexadecimal digits.
++    if (digit_count > 19) {
++      // Even if we have more than 19 pseudo-digits, it's not yet definitely an
++      // overflow. Recall that digit_count might be off-by-one (too large) if
++      // there's a decimal separator. It will also over-report the number of
++      // meaningful digits if the input looks something like "0.000dddExxx".
++      //
++      // We adjust by the number of leading '0's and '.'s and re-compare to 19.
++      // Once again, technically, we could skip ','s too, but that perturbs the
++      // "script/process-json-numbers.c with -p" benchmark.
++      const uint8_t* q = start_of_digits_ptr;
++      for (; (*q == '0') || (*q == '.'); q++) {
++      }
++      digit_count -= (uint32_t)(q - start_of_digits_ptr);
++      if (digit_count > 19) {
++        goto fallback;
++      }
++    }
+ 
+-  while (n >= 4) {
+-    __m128i x;
+-    x = _mm_lddqu_si128((const __m128i*)(const void*)s);
+-    x = _mm_shuffle_epi8(x, shuffle);
+-    _mm_storeu_si128((__m128i*)(void*)d, x);
++    // The wuffs_private_impl__parse_number_f64_eisel_lemire preconditions
++    // include that exp10 is in the range [-307 ..= 288].
++    if ((exp10 < -307) || (288 < exp10)) {
++      goto fallback;
++    }
+ 
+-    s += 4 * 4;
+-    d += 4 * 4;
+-    n -= 4;
+-  }
++    // If both man and (10 ** exp10) are exactly representable by a double, we
++    // don't need to run the Eisel-Lemire algorithm.
++    if ((-22 <= exp10) && (exp10 <= 22) && ((man >> 53) == 0)) {
++      double d = (double)man;
++      if (exp10 >= 0) {
++        d *= wuffs_private_impl__f64_powers_of_10[+exp10];
++      } else {
++        d /= wuffs_private_impl__f64_powers_of_10[-exp10];
++      }
++      wuffs_base__result_f64 ret;
++      ret.status.repr = NULL;
++      ret.value = negative ? -d : +d;
++      return ret;
++    }
+ 
+-  while (n--) {
+-    uint8_t s0 = s[0];
+-    uint8_t s1 = s[1];
+-    uint8_t s2 = s[2];
+-    uint8_t s3 = s[3];
+-    d[0] = s2;
+-    d[1] = s1;
+-    d[2] = s0;
+-    d[3] = s3;
+-    s += 4;
+-    d += 4;
+-  }
+-  return len;
+-}
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
++    // The wuffs_private_impl__parse_number_f64_eisel_lemire preconditions
++    // include that man is non-zero. Parsing "0" should be caught by the "If
++    // both man and (10 ** exp10)" above, but "0e99" might not.
++    if (man == 0) {
++      goto fallback;
++    }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__swap_rgbx_bgrx(uint8_t* dst_ptr,
+-                                           size_t dst_len,
+-                                           uint8_t* dst_palette_ptr,
+-                                           size_t dst_palette_len,
+-                                           const uint8_t* src_ptr,
+-                                           size_t src_len) {
+-  size_t len = (dst_len < src_len ? dst_len : src_len) / 4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
++    // Our man and exp10 are in range. Run the Eisel-Lemire algorithm.
++    int64_t r = wuffs_private_impl__parse_number_f64_eisel_lemire(man, exp10);
++    if (r < 0) {
++      goto fallback;
++    }
++    wuffs_base__result_f64 ret;
++    ret.status.repr = NULL;
++    ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(
++        ((uint64_t)r) | (((uint64_t)negative) << 63));
++    return ret;
++  } while (0);
+ 
+-  size_t n = len;
+-  while (n--) {
+-    uint8_t s0 = s[0];
+-    uint8_t s1 = s[1];
+-    uint8_t s2 = s[2];
+-    uint8_t s3 = s[3];
+-    d[0] = s2;
+-    d[1] = s1;
+-    d[2] = s0;
+-    d[3] = s3;
+-    s += 4;
+-    d += 4;
+-  }
+-  return len;
++fallback:
++  do {
++    wuffs_private_impl__high_prec_dec h;
++    wuffs_base__status status =
++        wuffs_private_impl__high_prec_dec__parse(&h, s, options);
++    if (status.repr) {
++      return wuffs_private_impl__parse_number_f64_special(s, options);
++    }
++    return wuffs_private_impl__high_prec_dec__to_f64(&h, options);
++  } while (0);
+ }
+ 
+ // --------
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__copy_1_1(uint8_t* dst_ptr,
+-                                     size_t dst_len,
+-                                     uint8_t* dst_palette_ptr,
+-                                     size_t dst_palette_len,
+-                                     const uint8_t* src_ptr,
+-                                     size_t src_len) {
+-  size_t len = (dst_len < src_len) ? dst_len : src_len;
+-  if (len > 0) {
+-    memmove(dst_ptr, src_ptr, len);
++static inline size_t  //
++wuffs_private_impl__render_inf(wuffs_base__slice_u8 dst,
++                               bool neg,
++                               uint32_t options) {
++  if (neg) {
++    if (dst.len < 4) {
++      return 0;
++    }
++    wuffs_base__poke_u32le__no_bounds_check(dst.ptr, 0x666E492D);  // '-Inf'le.
++    return 4;
+   }
+-  return len;
+-}
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__copy_2_2(uint8_t* dst_ptr,
+-                                     size_t dst_len,
+-                                     uint8_t* dst_palette_ptr,
+-                                     size_t dst_palette_len,
+-                                     const uint8_t* src_ptr,
+-                                     size_t src_len) {
+-  size_t dst_len2 = dst_len / 2;
+-  size_t src_len2 = src_len / 2;
+-  size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2;
+-  if (len > 0) {
+-    memmove(dst_ptr, src_ptr, len * 2);
++  if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) {
++    if (dst.len < 4) {
++      return 0;
++    }
++    wuffs_base__poke_u32le__no_bounds_check(dst.ptr, 0x666E492B);  // '+Inf'le.
++    return 4;
+   }
+-  return len;
+-}
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__copy_3_3(uint8_t* dst_ptr,
+-                                     size_t dst_len,
+-                                     uint8_t* dst_palette_ptr,
+-                                     size_t dst_palette_len,
+-                                     const uint8_t* src_ptr,
+-                                     size_t src_len) {
+-  size_t dst_len3 = dst_len / 3;
+-  size_t src_len3 = src_len / 3;
+-  size_t len = (dst_len3 < src_len3) ? dst_len3 : src_len3;
+-  if (len > 0) {
+-    memmove(dst_ptr, src_ptr, len * 3);
++  if (dst.len < 3) {
++    return 0;
+   }
+-  return len;
++  wuffs_base__poke_u24le__no_bounds_check(dst.ptr, 0x666E49);  // 'Inf'le.
++  return 3;
+ }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__copy_4_4(uint8_t* dst_ptr,
+-                                     size_t dst_len,
+-                                     uint8_t* dst_palette_ptr,
+-                                     size_t dst_palette_len,
+-                                     const uint8_t* src_ptr,
+-                                     size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
+-  if (len > 0) {
+-    memmove(dst_ptr, src_ptr, len * 4);
++static inline size_t  //
++wuffs_private_impl__render_nan(wuffs_base__slice_u8 dst) {
++  if (dst.len < 3) {
++    return 0;
+   }
+-  return len;
++  wuffs_base__poke_u24le__no_bounds_check(dst.ptr, 0x4E614E);  // 'NaN'le.
++  return 3;
+ }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__copy_8_8(uint8_t* dst_ptr,
+-                                     size_t dst_len,
+-                                     uint8_t* dst_palette_ptr,
+-                                     size_t dst_palette_len,
+-                                     const uint8_t* src_ptr,
+-                                     size_t src_len) {
+-  size_t dst_len8 = dst_len / 8;
+-  size_t src_len8 = src_len / 8;
+-  size_t len = (dst_len8 < src_len8) ? dst_len8 : src_len8;
+-  if (len > 0) {
+-    memmove(dst_ptr, src_ptr, len * 8);
++static size_t  //
++wuffs_private_impl__high_prec_dec__render_exponent_absent(
++    wuffs_base__slice_u8 dst,
++    wuffs_private_impl__high_prec_dec* h,
++    uint32_t precision,
++    uint32_t options) {
++  size_t n = (h->negative ||
++              (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN))
++                 ? 1
++                 : 0;
++  if (h->decimal_point <= 0) {
++    n += 1;
++  } else {
++    n += (size_t)(h->decimal_point);
++  }
++  if (precision > 0) {
++    n += precision + 1;  // +1 for the '.'.
+   }
+-  return len;
+-}
+ 
+-// --------
++  // Don't modify dst if the formatted number won't fit.
++  if (n > dst.len) {
++    return 0;
++  }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr_565__bgr(uint8_t* dst_ptr,
+-                                         size_t dst_len,
+-                                         uint8_t* dst_palette_ptr,
+-                                         size_t dst_palette_len,
+-                                         const uint8_t* src_ptr,
+-                                         size_t src_len) {
+-  size_t dst_len2 = dst_len / 2;
+-  size_t src_len3 = src_len / 3;
+-  size_t len = (dst_len2 < src_len3) ? dst_len2 : src_len3;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++  // Align-left or align-right.
++  uint8_t* ptr = (options & WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT)
++                     ? &dst.ptr[dst.len - n]
++                     : &dst.ptr[0];
+ 
+-  // TODO: unroll.
++  // Leading "±".
++  if (h->negative) {
++    *ptr++ = '-';
++  } else if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) {
++    *ptr++ = '+';
++  }
+ 
+-  while (n >= 1) {
+-    uint32_t b5 = s[0] >> 3;
+-    uint32_t g6 = s[1] >> 2;
+-    uint32_t r5 = s[2] >> 3;
+-    uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0);
+-    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
++  // Integral digits.
++  if (h->decimal_point <= 0) {
++    *ptr++ = '0';
++  } else {
++    uint32_t m =
++        wuffs_base__u32__min(h->num_digits, (uint32_t)(h->decimal_point));
++    uint32_t i = 0;
++    for (; i < m; i++) {
++      *ptr++ = (uint8_t)('0' | h->digits[i]);
++    }
++    for (; i < (uint32_t)(h->decimal_point); i++) {
++      *ptr++ = '0';
++    }
++  }
+ 
+-    s += 1 * 3;
+-    d += 1 * 2;
+-    n -= 1;
++  // Separator and then fractional digits.
++  if (precision > 0) {
++    *ptr++ =
++        (options & WUFFS_BASE__RENDER_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
++            ? ','
++            : '.';
++    uint32_t i = 0;
++    for (; i < precision; i++) {
++      uint32_t j = ((uint32_t)(h->decimal_point)) + i;
++      *ptr++ = (uint8_t)('0' | ((j < h->num_digits) ? h->digits[j] : 0));
++    }
+   }
+ 
+-  return len;
++  return n;
+ }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr_565__bgrx(uint8_t* dst_ptr,
+-                                          size_t dst_len,
+-                                          uint8_t* dst_palette_ptr,
+-                                          size_t dst_palette_len,
+-                                          const uint8_t* src_ptr,
+-                                          size_t src_len) {
+-  size_t dst_len2 = dst_len / 2;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
+-
+-  // TODO: unroll.
++static size_t  //
++wuffs_private_impl__high_prec_dec__render_exponent_present(
++    wuffs_base__slice_u8 dst,
++    wuffs_private_impl__high_prec_dec* h,
++    uint32_t precision,
++    uint32_t options) {
++  int32_t exp = 0;
++  if (h->num_digits > 0) {
++    exp = h->decimal_point - 1;
++  }
++  bool negative_exp = exp < 0;
++  if (negative_exp) {
++    exp = -exp;
++  }
+ 
+-  while (n >= 1) {
+-    uint32_t b5 = s[0] >> 3;
+-    uint32_t g6 = s[1] >> 2;
+-    uint32_t r5 = s[2] >> 3;
+-    uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0);
+-    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
++  size_t n = (h->negative ||
++              (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN))
++                 ? 4
++                 : 3;  // Mininum 3 bytes: first digit and then "e±".
++  if (precision > 0) {
++    n += precision + 1;  // +1 for the '.'.
++  }
++  n += (exp < 100) ? 2 : 3;
+ 
+-    s += 1 * 4;
+-    d += 1 * 2;
+-    n -= 1;
++  // Don't modify dst if the formatted number won't fit.
++  if (n > dst.len) {
++    return 0;
+   }
+ 
+-  return len;
+-}
++  // Align-left or align-right.
++  uint8_t* ptr = (options & WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT)
++                     ? &dst.ptr[dst.len - n]
++                     : &dst.ptr[0];
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len2 = dst_len / 2;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++  // Leading "±".
++  if (h->negative) {
++    *ptr++ = '-';
++  } else if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) {
++    *ptr++ = '+';
++  }
+ 
+-  // TODO: unroll.
++  // Integral digit.
++  if (h->num_digits > 0) {
++    *ptr++ = (uint8_t)('0' | h->digits[0]);
++  } else {
++    *ptr++ = '0';
++  }
+ 
+-  while (n >= 1) {
+-    wuffs_base__poke_u16le__no_bounds_check(
+-        d + (0 * 2),
+-        wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
+-            wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
+-                wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))));
++  // Separator and then fractional digits.
++  if (precision > 0) {
++    *ptr++ =
++        (options & WUFFS_BASE__RENDER_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
++            ? ','
++            : '.';
++    uint32_t i = 1;
++    uint32_t j = wuffs_base__u32__min(h->num_digits, precision + 1);
++    for (; i < j; i++) {
++      *ptr++ = (uint8_t)('0' | h->digits[i]);
++    }
++    for (; i <= precision; i++) {
++      *ptr++ = '0';
++    }
++  }
+ 
+-    s += 1 * 4;
+-    d += 1 * 2;
+-    n -= 1;
++  // Exponent: "e±" and then 2 or 3 digits.
++  *ptr++ = 'e';
++  *ptr++ = negative_exp ? '-' : '+';
++  if (exp < 10) {
++    *ptr++ = '0';
++    *ptr++ = (uint8_t)('0' | exp);
++  } else if (exp < 100) {
++    *ptr++ = (uint8_t)('0' | (exp / 10));
++    *ptr++ = (uint8_t)('0' | (exp % 10));
++  } else {
++    int32_t e = exp / 100;
++    exp -= e * 100;
++    *ptr++ = (uint8_t)('0' | e);
++    *ptr++ = (uint8_t)('0' | (exp / 10));
++    *ptr++ = (uint8_t)('0' | (exp % 10));
+   }
+ 
+-  return len;
++  return n;
+ }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len2 = dst_len / 2;
+-  size_t src_len8 = src_len / 8;
+-  size_t len = (dst_len2 < src_len8) ? dst_len2 : src_len8;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
+-
+-  // TODO: unroll.
++WUFFS_BASE__MAYBE_STATIC size_t  //
++wuffs_base__render_number_f64(wuffs_base__slice_u8 dst,
++                              double x,
++                              uint32_t precision,
++                              uint32_t options) {
++  // Decompose x (64 bits) into negativity (1 bit), base-2 exponent (11 bits
++  // with a -1023 bias) and mantissa (52 bits).
++  uint64_t bits = wuffs_base__ieee_754_bit_representation__from_f64_to_u64(x);
++  bool neg = (bits >> 63) != 0;
++  int32_t exp2 = ((int32_t)(bits >> 52)) & 0x7FF;
++  uint64_t man = bits & 0x000FFFFFFFFFFFFFul;
+ 
+-  while (n >= 1) {
+-    wuffs_base__poke_u16le__no_bounds_check(
+-        d + (0 * 2),
+-        wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
+-            wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
+-                wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)))));
++  // Apply the exponent bias and set the implicit top bit of the mantissa,
++  // unless x is subnormal. Also take care of Inf and NaN.
++  if (exp2 == 0x7FF) {
++    if (man != 0) {
++      return wuffs_private_impl__render_nan(dst);
++    }
++    return wuffs_private_impl__render_inf(dst, neg, options);
++  } else if (exp2 == 0) {
++    exp2 = -1022;
++  } else {
++    exp2 -= 1023;
++    man |= 0x0010000000000000ul;
++  }
+ 
+-    s += 1 * 8;
+-    d += 1 * 2;
+-    n -= 1;
++  // Ensure that precision isn't too large.
++  if (precision > 4095) {
++    precision = 4095;
+   }
+ 
+-  return len;
+-}
++  // Convert from the (neg, exp2, man) tuple to an HPD.
++  wuffs_private_impl__high_prec_dec h;
++  wuffs_private_impl__high_prec_dec__assign(&h, man, neg);
++  if (h.num_digits > 0) {
++    wuffs_private_impl__high_prec_dec__lshift(&h,
++                                              exp2 - 52);  // 52 mantissa bits.
++  }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len2 = dst_len / 2;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++  // Handle the "%e" and "%f" formats.
++  switch (options & (WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ABSENT |
++                     WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_PRESENT)) {
++    case WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ABSENT:  // The "%"f" format.
++      if (options & WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION) {
++        wuffs_private_impl__high_prec_dec__round_just_enough(&h, exp2, man);
++        int32_t p = ((int32_t)(h.num_digits)) - h.decimal_point;
++        precision = ((uint32_t)(wuffs_base__i32__max(0, p)));
++      } else {
++        wuffs_private_impl__high_prec_dec__round_nearest(
++            &h, ((int32_t)precision) + h.decimal_point);
++      }
++      return wuffs_private_impl__high_prec_dec__render_exponent_absent(
++          dst, &h, precision, options);
+ 
+-  // TODO: unroll.
++    case WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_PRESENT:  // The "%e" format.
++      if (options & WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION) {
++        wuffs_private_impl__high_prec_dec__round_just_enough(&h, exp2, man);
++        precision = (h.num_digits > 0) ? (h.num_digits - 1) : 0;
++      } else {
++        wuffs_private_impl__high_prec_dec__round_nearest(
++            &h, ((int32_t)precision) + 1);
++      }
++      return wuffs_private_impl__high_prec_dec__render_exponent_present(
++          dst, &h, precision, options);
++  }
+ 
+-  while (n >= 1) {
+-    // Extract 16-bit color components.
+-    uint32_t sa = 0x101 * ((uint32_t)s[3]);
+-    uint32_t sr = 0x101 * ((uint32_t)s[2]);
+-    uint32_t sg = 0x101 * ((uint32_t)s[1]);
+-    uint32_t sb = 0x101 * ((uint32_t)s[0]);
++  // We have the "%g" format and so precision means the number of significant
++  // digits, not the number of digits after the decimal separator. Perform
++  // rounding and determine whether to use "%e" or "%f".
++  int32_t e_threshold = 0;
++  if (options & WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION) {
++    wuffs_private_impl__high_prec_dec__round_just_enough(&h, exp2, man);
++    precision = h.num_digits;
++    e_threshold = 6;
++  } else {
++    if (precision == 0) {
++      precision = 1;
++    }
++    wuffs_private_impl__high_prec_dec__round_nearest(&h, ((int32_t)precision));
++    e_threshold = ((int32_t)precision);
++    int32_t nd = ((int32_t)(h.num_digits));
++    if ((e_threshold > nd) && (nd >= h.decimal_point)) {
++      e_threshold = nd;
++    }
++  }
+ 
+-    // Convert from 565 color to 16-bit color.
+-    uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
+-    uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
+-    uint32_t dr = (0x8421 * old_r5) >> 4;
+-    uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
+-    uint32_t dg = (0x1041 * old_g6) >> 2;
+-    uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
+-    uint32_t db = (0x8421 * old_b5) >> 4;
++  // Use the "%e" format if the exponent is large.
++  int32_t e = h.decimal_point - 1;
++  if ((e < -4) || (e_threshold <= e)) {
++    uint32_t p = wuffs_base__u32__min(precision, h.num_digits);
++    return wuffs_private_impl__high_prec_dec__render_exponent_present(
++        dst, &h, (p > 0) ? (p - 1) : 0, options);
++  }
+ 
+-    // Calculate the inverse of the src-alpha: how much of the dst to keep.
+-    uint32_t ia = 0xFFFF - sa;
++  // Use the "%f" format otherwise.
++  int32_t p = ((int32_t)precision);
++  if (p > h.decimal_point) {
++    p = ((int32_t)(h.num_digits));
++  }
++  precision = ((uint32_t)(wuffs_base__i32__max(0, p - h.decimal_point)));
++  return wuffs_private_impl__high_prec_dec__render_exponent_absent(
++      dst, &h, precision, options);
++}
+ 
+-    // Composite src (nonpremul) over dst (premul).
+-    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
+-    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
+-    db = ((sb * sa) + (db * ia)) / 0xFFFF;
++#endif  // !defined(WUFFS_CONFIG__MODULES) ||
++        // defined(WUFFS_CONFIG__MODULE__BASE) ||
++        // defined(WUFFS_CONFIG__MODULE__BASE__FLOATCONV)
+ 
+-    // Convert from 16-bit color to 565 color and combine the components.
+-    uint32_t new_r5 = 0x1F & (dr >> 11);
+-    uint32_t new_g6 = 0x3F & (dg >> 10);
+-    uint32_t new_b5 = 0x1F & (db >> 11);
+-    uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
+-    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
++    defined(WUFFS_CONFIG__MODULE__BASE__INTCONV)
+ 
+-    s += 1 * 4;
+-    d += 1 * 2;
+-    n -= 1;
+-  }
++// ---------------- Integer
+ 
+-  return len;
+-}
++// wuffs_base__parse_number__foo_digits entries are 0x00 for invalid digits,
++// and (0x80 | v) for valid digits, where v is the 4 bit value.
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len2 = dst_len / 2;
+-  size_t src_len8 = src_len / 8;
+-  size_t len = (dst_len2 < src_len8) ? dst_len2 : src_len8;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++static const uint8_t wuffs_base__parse_number__decimal_digits[256] = {
++    // 0     1     2     3     4     5     6     7
++    // 8     9     A     B     C     D     E     F
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x00 ..= 0x07.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x08 ..= 0x0F.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x10 ..= 0x17.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x18 ..= 0x1F.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x20 ..= 0x27.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x28 ..= 0x2F.
++    0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,  // 0x30 ..= 0x37. '0'-'7'.
++    0x88, 0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x38 ..= 0x3F. '8'-'9'.
+ 
+-  // TODO: unroll.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x40 ..= 0x47.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x48 ..= 0x4F.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x50 ..= 0x57.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x58 ..= 0x5F.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x60 ..= 0x67.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x68 ..= 0x6F.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x70 ..= 0x77.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x78 ..= 0x7F.
+ 
+-  while (n >= 1) {
+-    // Extract 16-bit color components.
+-    uint32_t sa = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 6));
+-    uint32_t sr = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 4));
+-    uint32_t sg = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 2));
+-    uint32_t sb = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 0));
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x80 ..= 0x87.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x88 ..= 0x8F.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x90 ..= 0x97.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x98 ..= 0x9F.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xA0 ..= 0xA7.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xA8 ..= 0xAF.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xB0 ..= 0xB7.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xB8 ..= 0xBF.
+ 
+-    // Convert from 565 color to 16-bit color.
+-    uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
+-    uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
+-    uint32_t dr = (0x8421 * old_r5) >> 4;
+-    uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
+-    uint32_t dg = (0x1041 * old_g6) >> 2;
+-    uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
+-    uint32_t db = (0x8421 * old_b5) >> 4;
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xC0 ..= 0xC7.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xC8 ..= 0xCF.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xD0 ..= 0xD7.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xD8 ..= 0xDF.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xE0 ..= 0xE7.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xE8 ..= 0xEF.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xF0 ..= 0xF7.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xF8 ..= 0xFF.
++    // 0     1     2     3     4     5     6     7
++    // 8     9     A     B     C     D     E     F
++};
+ 
+-    // Calculate the inverse of the src-alpha: how much of the dst to keep.
+-    uint32_t ia = 0xFFFF - sa;
++static const uint8_t wuffs_base__parse_number__hexadecimal_digits[256] = {
++    // 0     1     2     3     4     5     6     7
++    // 8     9     A     B     C     D     E     F
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x00 ..= 0x07.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x08 ..= 0x0F.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x10 ..= 0x17.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x18 ..= 0x1F.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x20 ..= 0x27.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x28 ..= 0x2F.
++    0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,  // 0x30 ..= 0x37. '0'-'7'.
++    0x88, 0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x38 ..= 0x3F. '8'-'9'.
+ 
+-    // Composite src (nonpremul) over dst (premul).
+-    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
+-    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
+-    db = ((sb * sa) + (db * ia)) / 0xFFFF;
++    0x00, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x00,  // 0x40 ..= 0x47. 'A'-'F'.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x48 ..= 0x4F.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x50 ..= 0x57.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x58 ..= 0x5F.
++    0x00, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x00,  // 0x60 ..= 0x67. 'a'-'f'.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x68 ..= 0x6F.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x70 ..= 0x77.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x78 ..= 0x7F.
+ 
+-    // Convert from 16-bit color to 565 color and combine the components.
+-    uint32_t new_r5 = 0x1F & (dr >> 11);
+-    uint32_t new_g6 = 0x3F & (dg >> 10);
+-    uint32_t new_b5 = 0x1F & (db >> 11);
+-    uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
+-    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x80 ..= 0x87.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x88 ..= 0x8F.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x90 ..= 0x97.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x98 ..= 0x9F.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xA0 ..= 0xA7.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xA8 ..= 0xAF.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xB0 ..= 0xB7.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xB8 ..= 0xBF.
+ 
+-    s += 1 * 8;
+-    d += 1 * 2;
+-    n -= 1;
+-  }
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xC0 ..= 0xC7.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xC8 ..= 0xCF.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xD0 ..= 0xD7.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xD8 ..= 0xDF.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xE0 ..= 0xE7.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xE8 ..= 0xEF.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xF0 ..= 0xF7.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xF8 ..= 0xFF.
++    // 0     1     2     3     4     5     6     7
++    // 8     9     A     B     C     D     E     F
++};
+ 
+-  return len;
+-}
++static const uint8_t wuffs_private_impl__encode_base16[16] = {
++    0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,  // 0x00 ..= 0x07.
++    0x38, 0x39, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46,  // 0x08 ..= 0x0F.
++};
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src(uint8_t* dst_ptr,
+-                                                      size_t dst_len,
+-                                                      uint8_t* dst_palette_ptr,
+-                                                      size_t dst_palette_len,
+-                                                      const uint8_t* src_ptr,
+-                                                      size_t src_len) {
+-  size_t dst_len2 = dst_len / 2;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++// --------
+ 
+-  // TODO: unroll.
++WUFFS_BASE__MAYBE_STATIC wuffs_base__result_i64  //
++wuffs_base__parse_number_i64(wuffs_base__slice_u8 s, uint32_t options) {
++  uint8_t* p = s.ptr;
++  uint8_t* q = s.ptr + s.len;
+ 
+-  while (n >= 1) {
+-    wuffs_base__poke_u16le__no_bounds_check(
+-        d + (0 * 2), wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
+-                         wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
++  if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
++    for (; (p < q) && (*p == '_'); p++) {
++    }
++  }
+ 
+-    s += 1 * 4;
+-    d += 1 * 2;
+-    n -= 1;
++  bool negative = false;
++  if (p >= q) {
++    goto fail_bad_argument;
++  } else if (*p == '-') {
++    p++;
++    negative = true;
++  } else if (*p == '+') {
++    p++;
+   }
+ 
+-  return len;
+-}
++  do {
++    wuffs_base__result_u64 r = wuffs_base__parse_number_u64(
++        wuffs_base__make_slice_u8(p, (size_t)(q - p)), options);
++    if (r.status.repr != NULL) {
++      wuffs_base__result_i64 ret;
++      ret.status.repr = r.status.repr;
++      ret.value = 0;
++      return ret;
++    } else if (negative) {
++      if (r.value < 0x8000000000000000) {
++        wuffs_base__result_i64 ret;
++        ret.status.repr = NULL;
++        ret.value = -(int64_t)(r.value);
++        return ret;
++      } else if (r.value == 0x8000000000000000) {
++        wuffs_base__result_i64 ret;
++        ret.status.repr = NULL;
++        ret.value = INT64_MIN;
++        return ret;
++      }
++      goto fail_out_of_bounds;
++    } else if (r.value > 0x7FFFFFFFFFFFFFFF) {
++      goto fail_out_of_bounds;
++    } else {
++      wuffs_base__result_i64 ret;
++      ret.status.repr = NULL;
++      ret.value = +(int64_t)(r.value);
++      return ret;
++    }
++  } while (0);
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len2 = dst_len / 2;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++fail_bad_argument:
++  do {
++    wuffs_base__result_i64 ret;
++    ret.status.repr = wuffs_base__error__bad_argument;
++    ret.value = 0;
++    return ret;
++  } while (0);
+ 
+-  // TODO: unroll.
++fail_out_of_bounds:
++  do {
++    wuffs_base__result_i64 ret;
++    ret.status.repr = wuffs_base__error__out_of_bounds;
++    ret.value = 0;
++    return ret;
++  } while (0);
++}
+ 
+-  while (n >= 1) {
+-    // Extract 16-bit color components.
+-    uint32_t sa = 0x101 * ((uint32_t)s[3]);
+-    uint32_t sr = 0x101 * ((uint32_t)s[2]);
+-    uint32_t sg = 0x101 * ((uint32_t)s[1]);
+-    uint32_t sb = 0x101 * ((uint32_t)s[0]);
++WUFFS_BASE__MAYBE_STATIC wuffs_base__result_u64  //
++wuffs_base__parse_number_u64(wuffs_base__slice_u8 s, uint32_t options) {
++  uint8_t* p = s.ptr;
++  uint8_t* q = s.ptr + s.len;
+ 
+-    // Convert from 565 color to 16-bit color.
+-    uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
+-    uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
+-    uint32_t dr = (0x8421 * old_r5) >> 4;
+-    uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
+-    uint32_t dg = (0x1041 * old_g6) >> 2;
+-    uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
+-    uint32_t db = (0x8421 * old_b5) >> 4;
+-
+-    // Calculate the inverse of the src-alpha: how much of the dst to keep.
+-    uint32_t ia = 0xFFFF - sa;
+-
+-    // Composite src (premul) over dst (premul).
+-    dr = sr + ((dr * ia) / 0xFFFF);
+-    dg = sg + ((dg * ia) / 0xFFFF);
+-    db = sb + ((db * ia) / 0xFFFF);
+-
+-    // Convert from 16-bit color to 565 color and combine the components.
+-    uint32_t new_r5 = 0x1F & (dr >> 11);
+-    uint32_t new_g6 = 0x3F & (dg >> 10);
+-    uint32_t new_b5 = 0x1F & (db >> 11);
+-    uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
+-    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
+-
+-    s += 1 * 4;
+-    d += 1 * 2;
+-    n -= 1;
++  if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
++    for (; (p < q) && (*p == '_'); p++) {
++    }
+   }
+ 
+-  return len;
+-}
++  if (p >= q) {
++    goto fail_bad_argument;
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr_565__rgb(uint8_t* dst_ptr,
+-                                         size_t dst_len,
+-                                         uint8_t* dst_palette_ptr,
+-                                         size_t dst_palette_len,
+-                                         const uint8_t* src_ptr,
+-                                         size_t src_len) {
+-  size_t dst_len2 = dst_len / 2;
+-  size_t src_len3 = src_len / 3;
+-  size_t len = (dst_len2 < src_len3) ? dst_len2 : src_len3;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++  } else if (*p == '0') {
++    p++;
++    if (p >= q) {
++      goto ok_zero;
++    }
++    if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
++      if (*p == '_') {
++        p++;
++        for (; p < q; p++) {
++          if (*p != '_') {
++            if (options &
++                WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES) {
++              goto decimal;
++            }
++            goto fail_bad_argument;
++          }
++        }
++        goto ok_zero;
++      }
++    }
+ 
+-  // TODO: unroll.
++    if ((*p == 'x') || (*p == 'X')) {
++      p++;
++      if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
++        for (; (p < q) && (*p == '_'); p++) {
++        }
++      }
++      if (p < q) {
++        goto hexadecimal;
++      }
+ 
+-  while (n >= 1) {
+-    uint32_t r5 = s[0] >> 3;
+-    uint32_t g6 = s[1] >> 2;
+-    uint32_t b5 = s[2] >> 3;
+-    uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0);
+-    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
++    } else if ((*p == 'd') || (*p == 'D')) {
++      p++;
++      if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
++        for (; (p < q) && (*p == '_'); p++) {
++        }
++      }
++      if (p < q) {
++        goto decimal;
++      }
++    }
+ 
+-    s += 1 * 3;
+-    d += 1 * 2;
+-    n -= 1;
++    if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES) {
++      goto decimal;
++    }
++    goto fail_bad_argument;
+   }
+ 
+-  return len;
+-}
++decimal:
++  do {
++    uint64_t v = wuffs_base__parse_number__decimal_digits[*p++];
++    if (v == 0) {
++      goto fail_bad_argument;
++    }
++    v &= 0x0F;
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len2 = dst_len / 2;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++    // UINT64_MAX is 18446744073709551615, which is ((10 * max10) + max1).
++    const uint64_t max10 = 1844674407370955161u;
++    const uint8_t max1 = 5;
+ 
+-  // TODO: unroll.
++    for (; p < q; p++) {
++      if ((*p == '_') &&
++          (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
++        continue;
++      }
++      uint8_t digit = wuffs_base__parse_number__decimal_digits[*p];
++      if (digit == 0) {
++        goto fail_bad_argument;
++      }
++      digit &= 0x0F;
++      if ((v > max10) || ((v == max10) && (digit > max1))) {
++        goto fail_out_of_bounds;
++      }
++      v = (10 * v) + ((uint64_t)(digit));
++    }
+ 
+-  while (n >= 1) {
+-    wuffs_base__poke_u16le__no_bounds_check(
+-        d + (0 * 2),
+-        wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
+-            wuffs_base__swap_u32_argb_abgr(
+-                wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
+-                    wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))))));
++    wuffs_base__result_u64 ret;
++    ret.status.repr = NULL;
++    ret.value = v;
++    return ret;
++  } while (0);
+ 
+-    s += 1 * 4;
+-    d += 1 * 2;
+-    n -= 1;
+-  }
++hexadecimal:
++  do {
++    uint64_t v = wuffs_base__parse_number__hexadecimal_digits[*p++];
++    if (v == 0) {
++      goto fail_bad_argument;
++    }
++    v &= 0x0F;
+ 
+-  return len;
+-}
++    for (; p < q; p++) {
++      if ((*p == '_') &&
++          (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
++        continue;
++      }
++      uint8_t digit = wuffs_base__parse_number__hexadecimal_digits[*p];
++      if (digit == 0) {
++        goto fail_bad_argument;
++      }
++      digit &= 0x0F;
++      if ((v >> 60) != 0) {
++        goto fail_out_of_bounds;
++      }
++      v = (v << 4) | ((uint64_t)(digit));
++    }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len2 = dst_len / 2;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++    wuffs_base__result_u64 ret;
++    ret.status.repr = NULL;
++    ret.value = v;
++    return ret;
++  } while (0);
+ 
+-  // TODO: unroll.
++ok_zero:
++  do {
++    wuffs_base__result_u64 ret;
++    ret.status.repr = NULL;
++    ret.value = 0;
++    return ret;
++  } while (0);
+ 
+-  while (n >= 1) {
+-    // Extract 16-bit color components.
+-    uint32_t sa = 0x101 * ((uint32_t)s[3]);
+-    uint32_t sb = 0x101 * ((uint32_t)s[2]);
+-    uint32_t sg = 0x101 * ((uint32_t)s[1]);
+-    uint32_t sr = 0x101 * ((uint32_t)s[0]);
++fail_bad_argument:
++  do {
++    wuffs_base__result_u64 ret;
++    ret.status.repr = wuffs_base__error__bad_argument;
++    ret.value = 0;
++    return ret;
++  } while (0);
+ 
+-    // Convert from 565 color to 16-bit color.
+-    uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
+-    uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
+-    uint32_t dr = (0x8421 * old_r5) >> 4;
+-    uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
+-    uint32_t dg = (0x1041 * old_g6) >> 2;
+-    uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
+-    uint32_t db = (0x8421 * old_b5) >> 4;
++fail_out_of_bounds:
++  do {
++    wuffs_base__result_u64 ret;
++    ret.status.repr = wuffs_base__error__out_of_bounds;
++    ret.value = 0;
++    return ret;
++  } while (0);
++}
+ 
+-    // Calculate the inverse of the src-alpha: how much of the dst to keep.
+-    uint32_t ia = 0xFFFF - sa;
++// --------
+ 
+-    // Composite src (nonpremul) over dst (premul).
+-    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
+-    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
+-    db = ((sb * sa) + (db * ia)) / 0xFFFF;
++// wuffs_base__render_number__first_hundred contains the decimal encodings of
++// the first one hundred numbers [0 ..= 99].
++static const uint8_t wuffs_base__render_number__first_hundred[200] = {
++    '0', '0', '0', '1', '0', '2', '0', '3', '0', '4',  //
++    '0', '5', '0', '6', '0', '7', '0', '8', '0', '9',  //
++    '1', '0', '1', '1', '1', '2', '1', '3', '1', '4',  //
++    '1', '5', '1', '6', '1', '7', '1', '8', '1', '9',  //
++    '2', '0', '2', '1', '2', '2', '2', '3', '2', '4',  //
++    '2', '5', '2', '6', '2', '7', '2', '8', '2', '9',  //
++    '3', '0', '3', '1', '3', '2', '3', '3', '3', '4',  //
++    '3', '5', '3', '6', '3', '7', '3', '8', '3', '9',  //
++    '4', '0', '4', '1', '4', '2', '4', '3', '4', '4',  //
++    '4', '5', '4', '6', '4', '7', '4', '8', '4', '9',  //
++    '5', '0', '5', '1', '5', '2', '5', '3', '5', '4',  //
++    '5', '5', '5', '6', '5', '7', '5', '8', '5', '9',  //
++    '6', '0', '6', '1', '6', '2', '6', '3', '6', '4',  //
++    '6', '5', '6', '6', '6', '7', '6', '8', '6', '9',  //
++    '7', '0', '7', '1', '7', '2', '7', '3', '7', '4',  //
++    '7', '5', '7', '6', '7', '7', '7', '8', '7', '9',  //
++    '8', '0', '8', '1', '8', '2', '8', '3', '8', '4',  //
++    '8', '5', '8', '6', '8', '7', '8', '8', '8', '9',  //
++    '9', '0', '9', '1', '9', '2', '9', '3', '9', '4',  //
++    '9', '5', '9', '6', '9', '7', '9', '8', '9', '9',  //
++};
+ 
+-    // Convert from 16-bit color to 565 color and combine the components.
+-    uint32_t new_r5 = 0x1F & (dr >> 11);
+-    uint32_t new_g6 = 0x3F & (dg >> 10);
+-    uint32_t new_b5 = 0x1F & (db >> 11);
+-    uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
+-    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
++static size_t  //
++wuffs_private_impl__render_number_u64(wuffs_base__slice_u8 dst,
++                                      uint64_t x,
++                                      uint32_t options,
++                                      bool neg) {
++  uint8_t buf[WUFFS_BASE__U64__BYTE_LENGTH__MAX_INCL];
++  uint8_t* ptr = &buf[0] + sizeof(buf);
+ 
+-    s += 1 * 4;
+-    d += 1 * 2;
+-    n -= 1;
++  while (x >= 100) {
++    size_t index = ((size_t)((x % 100) * 2));
++    x /= 100;
++    uint8_t s0 = wuffs_base__render_number__first_hundred[index + 0];
++    uint8_t s1 = wuffs_base__render_number__first_hundred[index + 1];
++    ptr -= 2;
++    ptr[0] = s0;
++    ptr[1] = s1;
+   }
+ 
+-  return len;
+-}
+-
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src(uint8_t* dst_ptr,
+-                                                      size_t dst_len,
+-                                                      uint8_t* dst_palette_ptr,
+-                                                      size_t dst_palette_len,
+-                                                      const uint8_t* src_ptr,
+-                                                      size_t src_len) {
+-  size_t dst_len2 = dst_len / 2;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++  if (x < 10) {
++    ptr -= 1;
++    ptr[0] = (uint8_t)('0' + x);
++  } else {
++    size_t index = ((size_t)(x * 2));
++    uint8_t s0 = wuffs_base__render_number__first_hundred[index + 0];
++    uint8_t s1 = wuffs_base__render_number__first_hundred[index + 1];
++    ptr -= 2;
++    ptr[0] = s0;
++    ptr[1] = s1;
++  }
+ 
+-  // TODO: unroll.
++  if (neg) {
++    ptr -= 1;
++    ptr[0] = '-';
++  } else if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) {
++    ptr -= 1;
++    ptr[0] = '+';
++  }
+ 
+-  while (n >= 1) {
+-    wuffs_base__poke_u16le__no_bounds_check(
+-        d + (0 * 2),
+-        wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
+-            wuffs_base__swap_u32_argb_abgr(
+-                wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))));
++  size_t n = sizeof(buf) - ((size_t)(ptr - &buf[0]));
++  if (n > dst.len) {
++    return 0;
++  }
++  memcpy(dst.ptr + ((options & WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT)
++                        ? (dst.len - n)
++                        : 0),
++         ptr, n);
++  return n;
++}
+ 
+-    s += 1 * 4;
+-    d += 1 * 2;
+-    n -= 1;
++WUFFS_BASE__MAYBE_STATIC size_t  //
++wuffs_base__render_number_i64(wuffs_base__slice_u8 dst,
++                              int64_t x,
++                              uint32_t options) {
++  uint64_t u = (uint64_t)x;
++  bool neg = x < 0;
++  if (neg) {
++    u = 1 + ~u;
+   }
++  return wuffs_private_impl__render_number_u64(dst, u, options, neg);
++}
+ 
+-  return len;
++WUFFS_BASE__MAYBE_STATIC size_t  //
++wuffs_base__render_number_u64(wuffs_base__slice_u8 dst,
++                              uint64_t x,
++                              uint32_t options) {
++  return wuffs_private_impl__render_number_u64(dst, x, options, false);
+ }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len2 = dst_len / 2;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++// ---------------- Base-16
+ 
+-  // TODO: unroll.
++WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
++wuffs_base__base_16__decode2(wuffs_base__slice_u8 dst,
++                             wuffs_base__slice_u8 src,
++                             bool src_closed,
++                             uint32_t options) {
++  wuffs_base__transform__output o;
++  size_t src_len2 = src.len / 2;
++  size_t len;
++  if (dst.len < src_len2) {
++    len = dst.len;
++    o.status.repr = wuffs_base__suspension__short_write;
++  } else {
++    len = src_len2;
++    if (!src_closed) {
++      o.status.repr = wuffs_base__suspension__short_read;
++    } else if (src.len & 1) {
++      o.status.repr = wuffs_base__error__bad_data;
++    } else {
++      o.status.repr = NULL;
++    }
++  }
+ 
+-  while (n >= 1) {
+-    // Extract 16-bit color components.
+-    uint32_t sa = 0x101 * ((uint32_t)s[3]);
+-    uint32_t sb = 0x101 * ((uint32_t)s[2]);
+-    uint32_t sg = 0x101 * ((uint32_t)s[1]);
+-    uint32_t sr = 0x101 * ((uint32_t)s[0]);
++  uint8_t* d = dst.ptr;
++  uint8_t* s = src.ptr;
++  size_t n = len;
+ 
+-    // Convert from 565 color to 16-bit color.
+-    uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
+-    uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
+-    uint32_t dr = (0x8421 * old_r5) >> 4;
+-    uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
+-    uint32_t dg = (0x1041 * old_g6) >> 2;
+-    uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
+-    uint32_t db = (0x8421 * old_b5) >> 4;
++  while (n--) {
++    *d = (uint8_t)((wuffs_base__parse_number__hexadecimal_digits[s[0]] << 4) |
++                   (wuffs_base__parse_number__hexadecimal_digits[s[1]] & 0x0F));
++    d += 1;
++    s += 2;
++  }
+ 
+-    // Calculate the inverse of the src-alpha: how much of the dst to keep.
+-    uint32_t ia = 0xFFFF - sa;
++  o.num_dst = len;
++  o.num_src = len * 2;
++  return o;
++}
+ 
+-    // Composite src (premul) over dst (premul).
+-    dr = sr + ((dr * ia) / 0xFFFF);
+-    dg = sg + ((dg * ia) / 0xFFFF);
+-    db = sb + ((db * ia) / 0xFFFF);
++WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
++wuffs_base__base_16__decode4(wuffs_base__slice_u8 dst,
++                             wuffs_base__slice_u8 src,
++                             bool src_closed,
++                             uint32_t options) {
++  wuffs_base__transform__output o;
++  size_t src_len4 = src.len / 4;
++  size_t len = dst.len < src_len4 ? dst.len : src_len4;
++  if (dst.len < src_len4) {
++    len = dst.len;
++    o.status.repr = wuffs_base__suspension__short_write;
++  } else {
++    len = src_len4;
++    if (!src_closed) {
++      o.status.repr = wuffs_base__suspension__short_read;
++    } else if (src.len & 1) {
++      o.status.repr = wuffs_base__error__bad_data;
++    } else {
++      o.status.repr = NULL;
++    }
++  }
+ 
+-    // Convert from 16-bit color to 565 color and combine the components.
+-    uint32_t new_r5 = 0x1F & (dr >> 11);
+-    uint32_t new_g6 = 0x3F & (dg >> 10);
+-    uint32_t new_b5 = 0x1F & (db >> 11);
+-    uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
+-    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
++  uint8_t* d = dst.ptr;
++  uint8_t* s = src.ptr;
++  size_t n = len;
+ 
+-    s += 1 * 4;
+-    d += 1 * 2;
+-    n -= 1;
++  while (n--) {
++    *d = (uint8_t)((wuffs_base__parse_number__hexadecimal_digits[s[2]] << 4) |
++                   (wuffs_base__parse_number__hexadecimal_digits[s[3]] & 0x0F));
++    d += 1;
++    s += 4;
+   }
+ 
+-  return len;
++  o.num_dst = len;
++  o.num_src = len * 4;
++  return o;
+ }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr_565__y(uint8_t* dst_ptr,
+-                                       size_t dst_len,
+-                                       uint8_t* dst_palette_ptr,
+-                                       size_t dst_palette_len,
+-                                       const uint8_t* src_ptr,
+-                                       size_t src_len) {
+-  size_t dst_len2 = dst_len / 2;
+-  size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
+-
+-  // TODO: unroll.
++WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
++wuffs_base__base_16__encode2(wuffs_base__slice_u8 dst,
++                             wuffs_base__slice_u8 src,
++                             bool src_closed,
++                             uint32_t options) {
++  wuffs_base__transform__output o;
++  size_t dst_len2 = dst.len / 2;
++  size_t len;
++  if (dst_len2 < src.len) {
++    len = dst_len2;
++    o.status.repr = wuffs_base__suspension__short_write;
++  } else {
++    len = src.len;
++    if (!src_closed) {
++      o.status.repr = wuffs_base__suspension__short_read;
++    } else {
++      o.status.repr = NULL;
++    }
++  }
+ 
+-  while (n >= 1) {
+-    uint32_t y5 = s[0] >> 3;
+-    uint32_t y6 = s[0] >> 2;
+-    uint32_t rgb_565 = (y5 << 11) | (y6 << 5) | (y5 << 0);
+-    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
++  uint8_t* d = dst.ptr;
++  uint8_t* s = src.ptr;
++  size_t n = len;
+ 
+-    s += 1 * 1;
+-    d += 1 * 2;
+-    n -= 1;
++  while (n--) {
++    uint8_t c = *s;
++    d[0] = wuffs_private_impl__encode_base16[c >> 4];
++    d[1] = wuffs_private_impl__encode_base16[c & 0x0F];
++    d += 2;
++    s += 1;
+   }
+ 
+-  return len;
++  o.num_dst = len * 2;
++  o.num_src = len;
++  return o;
+ }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr_565__y_16be(uint8_t* dst_ptr,
+-                                            size_t dst_len,
+-                                            uint8_t* dst_palette_ptr,
+-                                            size_t dst_palette_len,
+-                                            const uint8_t* src_ptr,
+-                                            size_t src_len) {
+-  size_t dst_len2 = dst_len / 2;
+-  size_t src_len2 = src_len / 2;
+-  size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
+-
+-  // TODO: unroll.
++WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
++wuffs_base__base_16__encode4(wuffs_base__slice_u8 dst,
++                             wuffs_base__slice_u8 src,
++                             bool src_closed,
++                             uint32_t options) {
++  wuffs_base__transform__output o;
++  size_t dst_len4 = dst.len / 4;
++  size_t len;
++  if (dst_len4 < src.len) {
++    len = dst_len4;
++    o.status.repr = wuffs_base__suspension__short_write;
++  } else {
++    len = src.len;
++    if (!src_closed) {
++      o.status.repr = wuffs_base__suspension__short_read;
++    } else {
++      o.status.repr = NULL;
++    }
++  }
+ 
+-  while (n >= 1) {
+-    uint32_t y5 = s[0] >> 3;
+-    uint32_t y6 = s[0] >> 2;
+-    uint32_t rgb_565 = (y5 << 11) | (y6 << 5) | (y5 << 0);
+-    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
++  uint8_t* d = dst.ptr;
++  uint8_t* s = src.ptr;
++  size_t n = len;
+ 
+-    s += 1 * 2;
+-    d += 1 * 2;
+-    n -= 1;
++  while (n--) {
++    uint8_t c = *s;
++    d[0] = '\\';
++    d[1] = 'x';
++    d[2] = wuffs_private_impl__encode_base16[c >> 4];
++    d[3] = wuffs_private_impl__encode_base16[c & 0x0F];
++    d += 4;
++    s += 1;
+   }
+ 
+-  return len;
++  o.num_dst = len * 4;
++  o.num_src = len;
++  return o;
+ }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr_565__index__src(uint8_t* dst_ptr,
+-                                                size_t dst_len,
+-                                                uint8_t* dst_palette_ptr,
+-                                                size_t dst_palette_len,
+-                                                const uint8_t* src_ptr,
+-                                                size_t src_len) {
+-  if (dst_palette_len !=
+-      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+-    return 0;
+-  }
+-  size_t dst_len2 = dst_len / 2;
+-  size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++// ---------------- Base-64
+ 
+-  const size_t loop_unroll_count = 4;
++// The two base-64 alphabets, std and url, differ only in the last two codes.
++//  - std: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
++//  - url: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_"
+ 
+-  while (n >= loop_unroll_count) {
+-    wuffs_base__poke_u16le__no_bounds_check(
+-        d + (0 * 2), wuffs_base__peek_u16le__no_bounds_check(
+-                         dst_palette_ptr + ((size_t)s[0] * 4)));
+-    wuffs_base__poke_u16le__no_bounds_check(
+-        d + (1 * 2), wuffs_base__peek_u16le__no_bounds_check(
+-                         dst_palette_ptr + ((size_t)s[1] * 4)));
+-    wuffs_base__poke_u16le__no_bounds_check(
+-        d + (2 * 2), wuffs_base__peek_u16le__no_bounds_check(
+-                         dst_palette_ptr + ((size_t)s[2] * 4)));
+-    wuffs_base__poke_u16le__no_bounds_check(
+-        d + (3 * 2), wuffs_base__peek_u16le__no_bounds_check(
+-                         dst_palette_ptr + ((size_t)s[3] * 4)));
++static const uint8_t wuffs_base__base_64__decode_std[256] = {
++    // 0     1     2     3     4     5     6     7
++    // 8     9     A     B     C     D     E     F
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x00 ..= 0x07.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x08 ..= 0x0F.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x10 ..= 0x17.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x18 ..= 0x1F.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x20 ..= 0x27.
++    0x80, 0x80, 0x80, 0x3E, 0x80, 0x80, 0x80, 0x3F,  // 0x28 ..= 0x2F.
++    0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B,  // 0x30 ..= 0x37.
++    0x3C, 0x3D, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x38 ..= 0x3F.
+ 
+-    s += loop_unroll_count * 1;
+-    d += loop_unroll_count * 2;
+-    n -= loop_unroll_count;
+-  }
++    0x80, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,  // 0x40 ..= 0x47.
++    0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E,  // 0x48 ..= 0x4F.
++    0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,  // 0x50 ..= 0x57.
++    0x17, 0x18, 0x19, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x58 ..= 0x5F.
++    0x80, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20,  // 0x60 ..= 0x67.
++    0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,  // 0x68 ..= 0x6F.
++    0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30,  // 0x70 ..= 0x77.
++    0x31, 0x32, 0x33, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x78 ..= 0x7F.
+ 
+-  while (n >= 1) {
+-    wuffs_base__poke_u16le__no_bounds_check(
+-        d + (0 * 2), wuffs_base__peek_u16le__no_bounds_check(
+-                         dst_palette_ptr + ((size_t)s[0] * 4)));
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x80 ..= 0x87.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x88 ..= 0x8F.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x90 ..= 0x97.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x98 ..= 0x9F.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xA0 ..= 0xA7.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xA8 ..= 0xAF.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xB0 ..= 0xB7.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xB8 ..= 0xBF.
+ 
+-    s += 1 * 1;
+-    d += 1 * 2;
+-    n -= 1;
+-  }
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xC0 ..= 0xC7.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xC8 ..= 0xCF.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xD0 ..= 0xD7.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xD8 ..= 0xDF.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xE0 ..= 0xE7.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xE8 ..= 0xEF.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xF0 ..= 0xF7.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xF8 ..= 0xFF.
++    // 0     1     2     3     4     5     6     7
++    // 8     9     A     B     C     D     E     F
++};
+ 
+-  return len;
+-}
++static const uint8_t wuffs_base__base_64__decode_url[256] = {
++    // 0     1     2     3     4     5     6     7
++    // 8     9     A     B     C     D     E     F
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x00 ..= 0x07.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x08 ..= 0x0F.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x10 ..= 0x17.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x18 ..= 0x1F.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x20 ..= 0x27.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x3E, 0x80, 0x80,  // 0x28 ..= 0x2F.
++    0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B,  // 0x30 ..= 0x37.
++    0x3C, 0x3D, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x38 ..= 0x3F.
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr_565__index_bgra_nonpremul__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  if (dst_palette_len !=
+-      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+-    return 0;
+-  }
+-  size_t dst_len2 = dst_len / 2;
+-  size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++    0x80, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,  // 0x40 ..= 0x47.
++    0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E,  // 0x48 ..= 0x4F.
++    0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,  // 0x50 ..= 0x57.
++    0x17, 0x18, 0x19, 0x80, 0x80, 0x80, 0x80, 0x3F,  // 0x58 ..= 0x5F.
++    0x80, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20,  // 0x60 ..= 0x67.
++    0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,  // 0x68 ..= 0x6F.
++    0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30,  // 0x70 ..= 0x77.
++    0x31, 0x32, 0x33, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x78 ..= 0x7F.
+ 
+-  // TODO: unroll.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x80 ..= 0x87.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x88 ..= 0x8F.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x90 ..= 0x97.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x98 ..= 0x9F.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xA0 ..= 0xA7.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xA8 ..= 0xAF.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xB0 ..= 0xB7.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xB8 ..= 0xBF.
+ 
+-  while (n >= 1) {
+-    uint32_t d0 = wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
+-        wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2)));
+-    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
+-                                                          ((size_t)s[0] * 4));
+-    wuffs_base__poke_u16le__no_bounds_check(
+-        d + (0 * 2),
+-        wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
+-            wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0)));
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xC0 ..= 0xC7.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xC8 ..= 0xCF.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xD0 ..= 0xD7.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xD8 ..= 0xDF.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xE0 ..= 0xE7.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xE8 ..= 0xEF.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xF0 ..= 0xF7.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xF8 ..= 0xFF.
++    // 0     1     2     3     4     5     6     7
++    // 8     9     A     B     C     D     E     F
++};
+ 
+-    s += 1 * 1;
+-    d += 1 * 2;
+-    n -= 1;
+-  }
++static const uint8_t wuffs_base__base_64__encode_std[64] = {
++    // 0     1     2     3     4     5     6     7
++    // 8     9     A     B     C     D     E     F
++    0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,  // 0x00 ..= 0x07.
++    0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50,  // 0x08 ..= 0x0F.
++    0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,  // 0x10 ..= 0x17.
++    0x59, 0x5A, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66,  // 0x18 ..= 0x1F.
++    0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E,  // 0x20 ..= 0x27.
++    0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76,  // 0x28 ..= 0x2F.
++    0x77, 0x78, 0x79, 0x7A, 0x30, 0x31, 0x32, 0x33,  // 0x30 ..= 0x37.
++    0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x2B, 0x2F,  // 0x38 ..= 0x3F.
++};
+ 
+-  return len;
+-}
++static const uint8_t wuffs_base__base_64__encode_url[64] = {
++    // 0     1     2     3     4     5     6     7
++    // 8     9     A     B     C     D     E     F
++    0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,  // 0x00 ..= 0x07.
++    0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50,  // 0x08 ..= 0x0F.
++    0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,  // 0x10 ..= 0x17.
++    0x59, 0x5A, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66,  // 0x18 ..= 0x1F.
++    0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E,  // 0x20 ..= 0x27.
++    0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76,  // 0x28 ..= 0x2F.
++    0x77, 0x78, 0x79, 0x7A, 0x30, 0x31, 0x32, 0x33,  // 0x30 ..= 0x37.
++    0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x2D, 0x5F,  // 0x38 ..= 0x3F.
++};
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr_565__index_binary_alpha__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  if (dst_palette_len !=
+-      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+-    return 0;
+-  }
+-  size_t dst_len2 = dst_len / 2;
+-  size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++// --------
+ 
+-  // TODO: unroll.
++WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
++wuffs_base__base_64__decode(wuffs_base__slice_u8 dst,
++                            wuffs_base__slice_u8 src,
++                            bool src_closed,
++                            uint32_t options) {
++  const uint8_t* alphabet = (options & WUFFS_BASE__BASE_64__URL_ALPHABET)
++                                ? wuffs_base__base_64__decode_url
++                                : wuffs_base__base_64__decode_std;
++  wuffs_base__transform__output o;
++  uint8_t* d_ptr = dst.ptr;
++  size_t d_len = dst.len;
++  const uint8_t* s_ptr = src.ptr;
++  size_t s_len = src.len;
++  bool pad = false;
+ 
+-  while (n >= 1) {
+-    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
+-                                                          ((size_t)s[0] * 4));
+-    if (s0) {
+-      wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)s0);
+-    }
++  while (s_len >= 4) {
++    uint32_t s = wuffs_base__peek_u32le__no_bounds_check(s_ptr);
++    uint32_t s0 = alphabet[0xFF & (s >> 0)];
++    uint32_t s1 = alphabet[0xFF & (s >> 8)];
++    uint32_t s2 = alphabet[0xFF & (s >> 16)];
++    uint32_t s3 = alphabet[0xFF & (s >> 24)];
+ 
+-    s += 1 * 1;
+-    d += 1 * 2;
+-    n -= 1;
+-  }
++    if (((s0 | s1 | s2 | s3) & 0xC0) != 0) {
++      if (s_len > 4) {
++        o.status.repr = wuffs_base__error__bad_data;
++        goto done;
++      } else if (!src_closed) {
++        o.status.repr = wuffs_base__suspension__short_read;
++        goto done;
++      } else if ((options & WUFFS_BASE__BASE_64__DECODE_ALLOW_PADDING) &&
++                 (s_ptr[3] == '=')) {
++        pad = true;
++        if (s_ptr[2] == '=') {
++          goto src2;
++        }
++        goto src3;
++      }
++      o.status.repr = wuffs_base__error__bad_data;
++      goto done;
++    }
+ 
+-  return len;
+-}
++    if (d_len < 3) {
++      o.status.repr = wuffs_base__suspension__short_write;
++      goto done;
++    }
+ 
+-// --------
++    s_ptr += 4;
++    s_len -= 4;
++    s = (s0 << 18) | (s1 << 12) | (s2 << 6) | (s3 << 0);
++    *d_ptr++ = (uint8_t)(s >> 16);
++    *d_ptr++ = (uint8_t)(s >> 8);
++    *d_ptr++ = (uint8_t)(s >> 0);
++    d_len -= 3;
++  }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr__bgr_565(uint8_t* dst_ptr,
+-                                         size_t dst_len,
+-                                         uint8_t* dst_palette_ptr,
+-                                         size_t dst_palette_len,
+-                                         const uint8_t* src_ptr,
+-                                         size_t src_len) {
+-  size_t dst_len3 = dst_len / 3;
+-  size_t src_len2 = src_len / 2;
+-  size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++  if (!src_closed) {
++    o.status.repr = wuffs_base__suspension__short_read;
++    goto done;
++  }
+ 
+-  // TODO: unroll.
++  if (s_len == 0) {
++    o.status.repr = NULL;
++    goto done;
++  } else if (s_len == 1) {
++    o.status.repr = wuffs_base__error__bad_data;
++    goto done;
++  } else if (s_len == 2) {
++    goto src2;
++  }
+ 
+-  while (n >= 1) {
+-    uint32_t s0 = wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
+-        wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2)));
+-    wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
++src3:
++  do {
++    uint32_t s = wuffs_base__peek_u24le__no_bounds_check(s_ptr);
++    uint32_t s0 = alphabet[0xFF & (s >> 0)];
++    uint32_t s1 = alphabet[0xFF & (s >> 8)];
++    uint32_t s2 = alphabet[0xFF & (s >> 16)];
++    if ((s0 & 0xC0) || (s1 & 0xC0) || (s2 & 0xC3)) {
++      o.status.repr = wuffs_base__error__bad_data;
++      goto done;
++    }
++    if (d_len < 2) {
++      o.status.repr = wuffs_base__suspension__short_write;
++      goto done;
++    }
++    s_ptr += pad ? 4 : 3;
++    s = (s0 << 18) | (s1 << 12) | (s2 << 6);
++    *d_ptr++ = (uint8_t)(s >> 16);
++    *d_ptr++ = (uint8_t)(s >> 8);
++    o.status.repr = NULL;
++    goto done;
++  } while (0);
+ 
+-    s += 1 * 2;
+-    d += 1 * 3;
+-    n -= 1;
+-  }
++src2:
++  do {
++    uint32_t s = wuffs_base__peek_u16le__no_bounds_check(s_ptr);
++    uint32_t s0 = alphabet[0xFF & (s >> 0)];
++    uint32_t s1 = alphabet[0xFF & (s >> 8)];
++    if ((s0 & 0xC0) || (s1 & 0xCF)) {
++      o.status.repr = wuffs_base__error__bad_data;
++      goto done;
++    }
++    if (d_len < 1) {
++      o.status.repr = wuffs_base__suspension__short_write;
++      goto done;
++    }
++    s_ptr += pad ? 4 : 2;
++    s = (s0 << 18) | (s1 << 12);
++    *d_ptr++ = (uint8_t)(s >> 16);
++    o.status.repr = NULL;
++    goto done;
++  } while (0);
+ 
+-  return len;
++done:
++  o.num_dst = (size_t)(d_ptr - dst.ptr);
++  o.num_src = (size_t)(s_ptr - src.ptr);
++  return o;
+ }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src(uint8_t* dst_ptr,
+-                                                     size_t dst_len,
+-                                                     uint8_t* dst_palette_ptr,
+-                                                     size_t dst_palette_len,
+-                                                     const uint8_t* src_ptr,
+-                                                     size_t src_len) {
+-  size_t dst_len3 = dst_len / 3;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
++wuffs_base__base_64__encode(wuffs_base__slice_u8 dst,
++                            wuffs_base__slice_u8 src,
++                            bool src_closed,
++                            uint32_t options) {
++  const uint8_t* alphabet = (options & WUFFS_BASE__BASE_64__URL_ALPHABET)
++                                ? wuffs_base__base_64__encode_url
++                                : wuffs_base__base_64__encode_std;
++  wuffs_base__transform__output o;
++  uint8_t* d_ptr = dst.ptr;
++  size_t d_len = dst.len;
++  const uint8_t* s_ptr = src.ptr;
++  size_t s_len = src.len;
+ 
+-  // TODO: unroll.
++  do {
++    while (s_len >= 3) {
++      if (d_len < 4) {
++        o.status.repr = wuffs_base__suspension__short_write;
++        goto done;
++      }
++      uint32_t s = wuffs_base__peek_u24be__no_bounds_check(s_ptr);
++      s_ptr += 3;
++      s_len -= 3;
++      *d_ptr++ = alphabet[0x3F & (s >> 18)];
++      *d_ptr++ = alphabet[0x3F & (s >> 12)];
++      *d_ptr++ = alphabet[0x3F & (s >> 6)];
++      *d_ptr++ = alphabet[0x3F & (s >> 0)];
++      d_len -= 4;
++    }
+ 
+-  while (n >= 1) {
+-    uint32_t s0 =
+-        wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
+-            wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
+-    wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
++    if (!src_closed) {
++      o.status.repr = wuffs_base__suspension__short_read;
++      goto done;
++    }
+ 
+-    s += 1 * 4;
+-    d += 1 * 3;
+-    n -= 1;
+-  }
++    if (s_len == 2) {
++      if (d_len <
++          ((options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) ? 4 : 3)) {
++        o.status.repr = wuffs_base__suspension__short_write;
++        goto done;
++      }
++      uint32_t s = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(s_ptr)))
++                   << 8;
++      s_ptr += 2;
++      *d_ptr++ = alphabet[0x3F & (s >> 18)];
++      *d_ptr++ = alphabet[0x3F & (s >> 12)];
++      *d_ptr++ = alphabet[0x3F & (s >> 6)];
++      if (options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) {
++        *d_ptr++ = '=';
++      }
++      o.status.repr = NULL;
++      goto done;
+ 
+-  return len;
+-}
++    } else if (s_len == 1) {
++      if (d_len <
++          ((options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) ? 4 : 2)) {
++        o.status.repr = wuffs_base__suspension__short_write;
++        goto done;
++      }
++      uint32_t s = ((uint32_t)(wuffs_base__peek_u8__no_bounds_check(s_ptr)))
++                   << 16;
++      s_ptr += 1;
++      *d_ptr++ = alphabet[0x3F & (s >> 18)];
++      *d_ptr++ = alphabet[0x3F & (s >> 12)];
++      if (options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) {
++        *d_ptr++ = '=';
++        *d_ptr++ = '=';
++      }
++      o.status.repr = NULL;
++      goto done;
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len3 = dst_len / 3;
+-  size_t src_len8 = src_len / 8;
+-  size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++    } else {
++      o.status.repr = NULL;
++      goto done;
++    }
++  } while (0);
+ 
+-  // TODO: unroll.
++done:
++  o.num_dst = (size_t)(d_ptr - dst.ptr);
++  o.num_src = (size_t)(s_ptr - src.ptr);
++  return o;
++}
+ 
+-  while (n >= 1) {
+-    uint32_t s0 =
+-        wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
+-            wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)));
+-    wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
++#endif  // !defined(WUFFS_CONFIG__MODULES) ||
++        // defined(WUFFS_CONFIG__MODULE__BASE) ||
++        // defined(WUFFS_CONFIG__MODULE__BASE__INTCONV)
+ 
+-    s += 1 * 8;
+-    d += 1 * 3;
+-    n -= 1;
+-  }
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
++    defined(WUFFS_CONFIG__MODULE__BASE__MAGIC)
+ 
+-  return len;
+-}
++// ---------------- Magic Numbers
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len3 = dst_len / 3;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++// ICO doesn't start with a magic identifier. Instead, see if the opening bytes
++// are plausibly ICO.
++//
++// Callers should have already verified that (prefix_data.len >= 2) and the
++// first two bytes are 0x00.
++//
++// See:
++//  - https://docs.fileformat.com/image/ico/
++static int32_t  //
++wuffs_base__magic_number_guess_fourcc__maybe_ico(
++    wuffs_base__slice_u8 prefix_data,
++    bool prefix_closed) {
++  // Allow-list for the Image Type field.
++  if (prefix_data.len < 4) {
++    return prefix_closed ? 0 : -1;
++  } else if (prefix_data.ptr[3] != 0) {
++    return 0;
++  }
++  switch (prefix_data.ptr[2]) {
++    case 0x01:  // ICO
++    case 0x02:  // CUR
++      break;
++    default:
++      return 0;
++  }
+ 
+-  // TODO: unroll.
++  // The Number Of Images should be positive.
++  if (prefix_data.len < 6) {
++    return prefix_closed ? 0 : -1;
++  } else if ((prefix_data.ptr[4] == 0) && (prefix_data.ptr[5] == 0)) {
++    return 0;
++  }
+ 
+-  while (n >= 1) {
+-    // Extract 16-bit color components.
+-    uint32_t dr = 0x101 * ((uint32_t)d[2]);
+-    uint32_t dg = 0x101 * ((uint32_t)d[1]);
+-    uint32_t db = 0x101 * ((uint32_t)d[0]);
+-    uint32_t sa = 0x101 * ((uint32_t)s[3]);
+-    uint32_t sr = 0x101 * ((uint32_t)s[2]);
+-    uint32_t sg = 0x101 * ((uint32_t)s[1]);
+-    uint32_t sb = 0x101 * ((uint32_t)s[0]);
++  // The first ICONDIRENTRY's fourth byte should be zero.
++  if (prefix_data.len < 10) {
++    return prefix_closed ? 0 : -1;
++  } else if (prefix_data.ptr[9] != 0) {
++    return 0;
++  }
+ 
+-    // Calculate the inverse of the src-alpha: how much of the dst to keep.
+-    uint32_t ia = 0xFFFF - sa;
++  // TODO: have a separate FourCC for CUR?
++  return 0x49434F20;  // 'ICO 'be
++}
+ 
+-    // Composite src (nonpremul) over dst (premul).
+-    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
+-    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
+-    db = ((sb * sa) + (db * ia)) / 0xFFFF;
++// TGA doesn't start with a magic identifier. Instead, see if the opening bytes
++// are plausibly TGA.
++//
++// Callers should have already verified that (prefix_data.len >= 2) and the
++// second byte (prefix_data.ptr[1], the Color Map Type byte), is either 0x00 or
++// 0x01.
++//
++// See:
++//  - https://docs.fileformat.com/image/tga/
++//  - https://www.dca.fee.unicamp.br/~martino/disciplinas/ea978/tgaffs.pdf
++static int32_t  //
++wuffs_base__magic_number_guess_fourcc__maybe_tga(
++    wuffs_base__slice_u8 prefix_data,
++    bool prefix_closed) {
++  // Allow-list for the Image Type field.
++  if (prefix_data.len < 3) {
++    return prefix_closed ? 0 : -1;
++  }
++  switch (prefix_data.ptr[2]) {
++    case 0x01:
++    case 0x02:
++    case 0x03:
++    case 0x09:
++    case 0x0A:
++    case 0x0B:
++      break;
++    default:
++      // TODO: 0x20 and 0x21 are invalid, according to the spec, but are
++      // apparently unofficial extensions.
++      return 0;
++  }
+ 
+-    // Convert from 16-bit color to 8-bit color.
+-    d[0] = (uint8_t)(db >> 8);
+-    d[1] = (uint8_t)(dg >> 8);
+-    d[2] = (uint8_t)(dr >> 8);
++  // Allow-list for the Color Map Entry Size field (if the Color Map Type field
++  // is non-zero) or else all the Color Map fields should be zero.
++  if (prefix_data.len < 8) {
++    return prefix_closed ? 0 : -1;
++  } else if (prefix_data.ptr[1] != 0x00) {
++    switch (prefix_data.ptr[7]) {
++      case 0x0F:
++      case 0x10:
++      case 0x18:
++      case 0x20:
++        break;
++      default:
++        return 0;
++    }
++  } else if ((prefix_data.ptr[3] | prefix_data.ptr[4] | prefix_data.ptr[5] |
++              prefix_data.ptr[6] | prefix_data.ptr[7]) != 0x00) {
++    return 0;
++  }
+ 
+-    s += 1 * 4;
+-    d += 1 * 3;
+-    n -= 1;
++  // Allow-list for the Pixel Depth field.
++  if (prefix_data.len < 17) {
++    return prefix_closed ? 0 : -1;
++  }
++  switch (prefix_data.ptr[16]) {
++    case 0x01:
++    case 0x08:
++    case 0x0F:
++    case 0x10:
++    case 0x18:
++    case 0x20:
++      break;
++    default:
++      return 0;
+   }
+ 
+-  return len;
++  return 0x54474120;  // 'TGA 'be
+ }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len3 = dst_len / 3;
+-  size_t src_len8 = src_len / 8;
+-  size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++WUFFS_BASE__MAYBE_STATIC int32_t  //
++wuffs_base__magic_number_guess_fourcc(wuffs_base__slice_u8 prefix_data,
++                                      bool prefix_closed) {
++  // This is similar to (but different from):
++  //  - the magic/Magdir tables under https://github.com/file/file
++  //  - the MIME Sniffing algorithm at https://mimesniff.spec.whatwg.org/
+ 
+-  // TODO: unroll.
++  // table holds the 'magic numbers' (which are actually variable length
++  // strings). The strings may contain NUL bytes, so the "const char* magic"
++  // value starts with the length-minus-1 of the 'magic number'.
++  //
++  // Keep it sorted by magic[1], then magic[0] descending (prioritizing longer
++  // matches) and finally by magic[2:]. When multiple entries match, the
++  // longest one wins.
++  //
++  // The fourcc field might be negated, in which case there's further
++  // specialization (see § below).
++  static struct {
++    int32_t fourcc;
++    const char* magic;
++  } table[] = {
++      {-0x30302020, "\x01\x00\x00"},              // '00  'be
++      {+0x475A2020, "\x02\x1F\x8B\x08"},          // GZ
++      {+0x5A535444, "\x03\x28\xB5\x2F\xFD"},      // ZSTD
++      {+0x425A3220, "\x02\x42\x5A\x68"},          // BZ2
++      {+0x424D5020, "\x01\x42\x4D"},              // BMP
++      {+0x47494620, "\x03\x47\x49\x46\x38"},      // GIF
++      {+0x54494646, "\x03\x49\x49\x2A\x00"},      // TIFF (little-endian)
++      {+0x4C5A4950, "\x04\x4C\x5A\x49\x50\x01"},  // LZIP
++      {+0x54494646, "\x03\x4D\x4D\x00\x2A"},      // TIFF (big-endian)
++      {+0x4E50424D, "\x02\x50\x35\x0A"},          // NPBM (P5; *.pgm)
++      {+0x4E50424D, "\x02\x50\x36\x0A"},          // NPBM (P6; *.ppm)
++      {-0x52494646, "\x03\x52\x49\x46\x46"},      // RIFF
++      {+0x4C5A4D41, "\x04\x5D\x00\x10\x00\x00"},  // LZMA
++      {+0x4C5A4D41, "\x02\x5D\x00\x00"},          // LZMA
++      {+0x4E494520, "\x02\x6E\xC3\xAF"},          // NIE
++      {+0x514F4920, "\x03\x71\x6F\x69\x66"},      // QOI
++      {+0x5A4C4942, "\x01\x78\x9C"},              // ZLIB
++      {+0x504E4720, "\x03\x89\x50\x4E\x47"},      // PNG
++      {+0x585A2020, "\x04\xFD\x37\x7A\x58\x5A"},  // XZ
++      {+0x4A504547, "\x01\xFF\xD8"},              // JPEG
++  };
++  static const size_t table_len = sizeof(table) / sizeof(table[0]);
+ 
+-  while (n >= 1) {
+-    // Extract 16-bit color components.
+-    uint32_t dr = 0x101 * ((uint32_t)d[2]);
+-    uint32_t dg = 0x101 * ((uint32_t)d[1]);
+-    uint32_t db = 0x101 * ((uint32_t)d[0]);
+-    uint32_t sa = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 6));
+-    uint32_t sr = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 4));
+-    uint32_t sg = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 2));
+-    uint32_t sb = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 0));
++  if (prefix_data.len == 0) {
++    return prefix_closed ? 0 : -1;
++  }
++  uint8_t pre_first_byte = prefix_data.ptr[0];
+ 
+-    // Calculate the inverse of the src-alpha: how much of the dst to keep.
+-    uint32_t ia = 0xFFFF - sa;
++  int32_t fourcc = 0;
++  size_t i;
++  for (i = 0; i < table_len; i++) {
++    uint8_t mag_first_byte = ((uint8_t)(table[i].magic[1]));
++    if (pre_first_byte < mag_first_byte) {
++      break;
++    } else if (pre_first_byte > mag_first_byte) {
++      continue;
++    }
++    fourcc = table[i].fourcc;
+ 
+-    // Composite src (nonpremul) over dst (premul).
+-    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
+-    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
+-    db = ((sb * sa) + (db * ia)) / 0xFFFF;
++    uint8_t mag_remaining_len = ((uint8_t)(table[i].magic[0]));
++    if (mag_remaining_len == 0) {
++      goto match;
++    }
+ 
+-    // Convert from 16-bit color to 8-bit color.
+-    d[0] = (uint8_t)(db >> 8);
+-    d[1] = (uint8_t)(dg >> 8);
+-    d[2] = (uint8_t)(dr >> 8);
++    const char* mag_remaining_ptr = table[i].magic + 2;
++    uint8_t* pre_remaining_ptr = prefix_data.ptr + 1;
++    size_t pre_remaining_len = prefix_data.len - 1;
++    if (pre_remaining_len < mag_remaining_len) {
++      if (!memcmp(pre_remaining_ptr, mag_remaining_ptr, pre_remaining_len)) {
++        return prefix_closed ? 0 : -1;
++      }
++    } else {
++      if (!memcmp(pre_remaining_ptr, mag_remaining_ptr, mag_remaining_len)) {
++        goto match;
++      }
++    }
++  }
+ 
+-    s += 1 * 8;
+-    d += 1 * 3;
+-    n -= 1;
++  if (prefix_data.len < 2) {
++    return prefix_closed ? 0 : -1;
++  } else if ((prefix_data.ptr[1] == 0x00) || (prefix_data.ptr[1] == 0x01)) {
++    return wuffs_base__magic_number_guess_fourcc__maybe_tga(prefix_data,
++                                                            prefix_closed);
+   }
+ 
+-  return len;
+-}
++  return 0;
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr__bgra_premul__src(uint8_t* dst_ptr,
+-                                                  size_t dst_len,
+-                                                  uint8_t* dst_palette_ptr,
+-                                                  size_t dst_palette_len,
+-                                                  const uint8_t* src_ptr,
+-                                                  size_t src_len) {
+-  size_t dst_len3 = dst_len / 3;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++match:
++  // Negative FourCC values (see § above) are further specialized.
++  if (fourcc < 0) {
++    fourcc = -fourcc;
+ 
+-  while (n >= 1) {
+-    uint8_t s0 = s[0];
+-    uint8_t s1 = s[1];
+-    uint8_t s2 = s[2];
+-    d[0] = s0;
+-    d[1] = s1;
+-    d[2] = s2;
++    if (fourcc == 0x52494646) {  // 'RIFF'be
++      if (prefix_data.len < 12) {
++        return prefix_closed ? 0 : -1;
++      }
++      uint32_t x = wuffs_base__peek_u32be__no_bounds_check(prefix_data.ptr + 8);
++      if (x == 0x57454250) {  // 'WEBP'be
++        return 0x57454250;    // 'WEBP'be
++      }
+ 
+-    s += 1 * 4;
+-    d += 1 * 3;
+-    n -= 1;
++    } else if (fourcc == 0x30302020) {  // '00  'be
++      // Binary data starting with multiple 0x00 NUL bytes is quite common.
++      // Unfortunately, some file formats also don't start with a magic
++      // identifier, so we have to use heuristics (where the order matters, the
++      // same as /usr/bin/file's magic/Magdir tables) as best we can. Maybe
++      // it's TGA, ICO/CUR, etc. Maybe it's something else.
++      int32_t tga = wuffs_base__magic_number_guess_fourcc__maybe_tga(
++          prefix_data, prefix_closed);
++      if (tga != 0) {
++        return tga;
++      }
++      int32_t ico = wuffs_base__magic_number_guess_fourcc__maybe_ico(
++          prefix_data, prefix_closed);
++      if (ico != 0) {
++        return ico;
++      }
++      if (prefix_data.len < 4) {
++        return prefix_closed ? 0 : -1;
++      } else if ((prefix_data.ptr[2] != 0x00) &&
++                 ((prefix_data.ptr[2] >= 0x80) ||
++                  (prefix_data.ptr[3] != 0x00))) {
++        // Roughly speaking, this could be a non-degenerate (non-0-width and
++        // non-0-height) WBMP image.
++        return 0x57424D50;  // 'WBMP'be
++      }
++      return 0;
++    }
+   }
+-
+-  return len;
++  return fourcc;
+ }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr__bgra_premul__src_over(uint8_t* dst_ptr,
+-                                                       size_t dst_len,
+-                                                       uint8_t* dst_palette_ptr,
+-                                                       size_t dst_palette_len,
+-                                                       const uint8_t* src_ptr,
+-                                                       size_t src_len) {
+-  size_t dst_len3 = dst_len / 3;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
+-
+-  while (n >= 1) {
+-    // Extract 16-bit color components.
+-    uint32_t dr = 0x101 * ((uint32_t)d[2]);
+-    uint32_t dg = 0x101 * ((uint32_t)d[1]);
+-    uint32_t db = 0x101 * ((uint32_t)d[0]);
+-    uint32_t sa = 0x101 * ((uint32_t)s[3]);
+-    uint32_t sr = 0x101 * ((uint32_t)s[2]);
+-    uint32_t sg = 0x101 * ((uint32_t)s[1]);
+-    uint32_t sb = 0x101 * ((uint32_t)s[0]);
+-
+-    // Calculate the inverse of the src-alpha: how much of the dst to keep.
+-    uint32_t ia = 0xFFFF - sa;
++#endif  // !defined(WUFFS_CONFIG__MODULES) ||
++        // defined(WUFFS_CONFIG__MODULE__BASE) ||
++        // defined(WUFFS_CONFIG__MODULE__BASE__MAGIC)
+ 
+-    // Composite src (premul) over dst (premul).
+-    dr = sr + ((dr * ia) / 0xFFFF);
+-    dg = sg + ((dg * ia) / 0xFFFF);
+-    db = sb + ((db * ia) / 0xFFFF);
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
++    defined(WUFFS_CONFIG__MODULE__BASE__PIXCONV)
+ 
+-    // Convert from 16-bit color to 8-bit color.
+-    d[0] = (uint8_t)(db >> 8);
+-    d[1] = (uint8_t)(dg >> 8);
+-    d[2] = (uint8_t)(dr >> 8);
++// ---------------- Pixel Swizzler
+ 
+-    s += 1 * 4;
+-    d += 1 * 3;
+-    n -= 1;
+-  }
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
++static uint64_t  //
++wuffs_private_impl__swizzle_bgrw__bgr__x86_sse42(uint8_t* dst_ptr,
++                                                 size_t dst_len,
++                                                 uint8_t* dst_palette_ptr,
++                                                 size_t dst_palette_len,
++                                                 const uint8_t* src_ptr,
++                                                 size_t src_len);
+ 
+-  return len;
+-}
++static uint64_t  //
++wuffs_private_impl__swizzle_bgrw__rgb__x86_sse42(uint8_t* dst_ptr,
++                                                 size_t dst_len,
++                                                 uint8_t* dst_palette_ptr,
++                                                 size_t dst_palette_len,
++                                                 const uint8_t* src_ptr,
++                                                 size_t src_len);
+ 
++WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src(uint8_t* dst_ptr,
+-                                                     size_t dst_len,
+-                                                     uint8_t* dst_palette_ptr,
+-                                                     size_t dst_palette_len,
+-                                                     const uint8_t* src_ptr,
+-                                                     size_t src_len) {
+-  size_t dst_len3 = dst_len / 3;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++wuffs_private_impl__swizzle_swap_rgbx_bgrx__x86_sse42(uint8_t* dst_ptr,
++                                                      size_t dst_len,
++                                                      uint8_t* dst_palette_ptr,
++                                                      size_t dst_palette_len,
++                                                      const uint8_t* src_ptr,
++                                                      size_t src_len);
+ 
+-  // TODO: unroll.
++WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
++static uint64_t  //
++wuffs_private_impl__swizzle_xxxx__y__x86_sse42(uint8_t* dst_ptr,
++                                               size_t dst_len,
++                                               uint8_t* dst_palette_ptr,
++                                               size_t dst_palette_len,
++                                               const uint8_t* src_ptr,
++                                               size_t src_len);
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
+ 
+-  while (n >= 1) {
+-    uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
+-        wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
+-            wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
+-    wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
++// --------
+ 
+-    s += 1 * 4;
+-    d += 1 * 3;
+-    n -= 1;
+-  }
++static inline uint32_t  //
++wuffs_private_impl__swap_u32_argb_abgr(uint32_t u) {
++  uint32_t o = u & 0xFF00FF00ul;
++  uint32_t r = u & 0x00FF0000ul;
++  uint32_t b = u & 0x000000FFul;
++  return o | (r >> 16) | (b << 16);
++}
+ 
+-  return len;
++static inline uint64_t  //
++wuffs_private_impl__swap_u64_argb_abgr(uint64_t u) {
++  uint64_t o = u & 0xFFFF0000FFFF0000ull;
++  uint64_t r = u & 0x0000FFFF00000000ull;
++  uint64_t b = u & 0x000000000000FFFFull;
++  return o | (r >> 32) | (b << 32);
+ }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr__rgba_nonpremul_4x16le__src(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len3 = dst_len / 3;
+-  size_t src_len8 = src_len / 8;
+-  size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++static inline uint32_t  //
++wuffs_private_impl__color_u64__as__color_u32__swap_u32_argb_abgr(uint64_t c) {
++  uint32_t a = ((uint32_t)(0xFF & (c >> 56)));
++  uint32_t r = ((uint32_t)(0xFF & (c >> 40)));
++  uint32_t g = ((uint32_t)(0xFF & (c >> 24)));
++  uint32_t b = ((uint32_t)(0xFF & (c >> 8)));
++  return (a << 24) | (b << 16) | (g << 8) | (r << 0);
++}
+ 
+-  // TODO: unroll.
++// --------
+ 
+-  while (n >= 1) {
+-    uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
+-        wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
+-            wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8))));
+-    wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
++WUFFS_BASE__MAYBE_STATIC wuffs_base__color_u32_argb_premul  //
++wuffs_base__pixel_buffer__color_u32_at(const wuffs_base__pixel_buffer* pb,
++                                       uint32_t x,
++                                       uint32_t y) {
++  if (!pb || (x >= pb->pixcfg.private_impl.width) ||
++      (y >= pb->pixcfg.private_impl.height)) {
++    return 0;
++  }
+ 
+-    s += 1 * 8;
+-    d += 1 * 3;
+-    n -= 1;
++  if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) {
++    // TODO: support planar formats.
++    return 0;
+   }
+ 
+-  return len;
+-}
++  size_t stride = pb->private_impl.planes[0].stride;
++  const uint8_t* row = pb->private_impl.planes[0].ptr + (stride * ((size_t)y));
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len3 = dst_len / 3;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++  switch (pb->pixcfg.private_impl.pixfmt.repr) {
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
++      return wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x)));
+ 
+-  // TODO: unroll.
++    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: {
++      uint8_t* palette = pb->private_impl.planes[3].ptr;
++      return wuffs_base__peek_u32le__no_bounds_check(palette +
++                                                     (4 * ((size_t)row[x])));
++    }
+ 
+-  while (n >= 1) {
+-    // Extract 16-bit color components.
+-    uint32_t dr = 0x101 * ((uint32_t)d[2]);
+-    uint32_t dg = 0x101 * ((uint32_t)d[1]);
+-    uint32_t db = 0x101 * ((uint32_t)d[0]);
+-    uint32_t sa = 0x101 * ((uint32_t)s[3]);
+-    uint32_t sb = 0x101 * ((uint32_t)s[2]);
+-    uint32_t sg = 0x101 * ((uint32_t)s[1]);
+-    uint32_t sr = 0x101 * ((uint32_t)s[0]);
++      // Common formats above. Rarer formats below.
+ 
+-    // Calculate the inverse of the src-alpha: how much of the dst to keep.
+-    uint32_t ia = 0xFFFF - sa;
++    case WUFFS_BASE__PIXEL_FORMAT__Y:
++      return 0xFF000000 | (0x00010101 * ((uint32_t)(row[x])));
++    case WUFFS_BASE__PIXEL_FORMAT__Y_16LE:
++      return 0xFF000000 | (0x00010101 * ((uint32_t)(row[(2 * x) + 1])));
++    case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
++      return 0xFF000000 | (0x00010101 * ((uint32_t)(row[(2 * x) + 0])));
++    case WUFFS_BASE__PIXEL_FORMAT__YA_NONPREMUL:
++      return wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
++          (((uint32_t)(row[(2 * x) + 1])) << 24) |
++          (((uint32_t)(row[(2 * x) + 0])) * 0x00010101));
+ 
+-    // Composite src (nonpremul) over dst (premul).
+-    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
+-    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
+-    db = ((sb * sa) + (db * ia)) / 0xFFFF;
++    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL: {
++      uint8_t* palette = pb->private_impl.planes[3].ptr;
++      return wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
++          wuffs_base__peek_u32le__no_bounds_check(palette +
++                                                  (4 * ((size_t)row[x]))));
++    }
+ 
+-    // Convert from 16-bit color to 8-bit color.
+-    d[0] = (uint8_t)(db >> 8);
+-    d[1] = (uint8_t)(dg >> 8);
+-    d[2] = (uint8_t)(dr >> 8);
++    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
++      return wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
++          wuffs_base__peek_u16le__no_bounds_check(row + (2 * ((size_t)x))));
++    case WUFFS_BASE__PIXEL_FORMAT__BGR:
++      return 0xFF000000 |
++             wuffs_base__peek_u24le__no_bounds_check(row + (3 * ((size_t)x)));
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
++      return wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
++          wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x))));
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
++      return wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
++          wuffs_base__peek_u64le__no_bounds_check(row + (8 * ((size_t)x))));
++    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
++      return 0xFF000000 |
++             wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x)));
+ 
+-    s += 1 * 4;
+-    d += 1 * 3;
+-    n -= 1;
++    case WUFFS_BASE__PIXEL_FORMAT__RGB:
++      return wuffs_private_impl__swap_u32_argb_abgr(
++          0xFF000000 |
++          wuffs_base__peek_u24le__no_bounds_check(row + (3 * ((size_t)x))));
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
++      return wuffs_private_impl__swap_u32_argb_abgr(
++          wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
++              wuffs_base__peek_u32le__no_bounds_check(row +
++                                                      (4 * ((size_t)x)))));
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
++      return wuffs_private_impl__swap_u32_argb_abgr(
++          wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x))));
++    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
++      return wuffs_private_impl__swap_u32_argb_abgr(
++          0xFF000000 |
++          wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x))));
++
++    default:
++      // TODO: support more formats.
++      break;
+   }
+ 
+-  return len;
++  return 0;
+ }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr__rgba_nonpremul_4x16le__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len3 = dst_len / 3;
+-  size_t src_len8 = src_len / 8;
+-  size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++// --------
+ 
+-  // TODO: unroll.
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status  //
++wuffs_base__pixel_buffer__set_color_u32_at(
++    wuffs_base__pixel_buffer* pb,
++    uint32_t x,
++    uint32_t y,
++    wuffs_base__color_u32_argb_premul color) {
++  if (!pb) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if ((x >= pb->pixcfg.private_impl.width) ||
++      (y >= pb->pixcfg.private_impl.height)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
+ 
+-  while (n >= 1) {
+-    // Extract 16-bit color components.
+-    uint32_t dr = 0x101 * ((uint32_t)d[2]);
+-    uint32_t dg = 0x101 * ((uint32_t)d[1]);
+-    uint32_t db = 0x101 * ((uint32_t)d[0]);
+-    uint32_t sa = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 6));
+-    uint32_t sb = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 4));
+-    uint32_t sg = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 2));
+-    uint32_t sr = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 0));
++  if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) {
++    // TODO: support planar formats.
++    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++  }
+ 
+-    // Calculate the inverse of the src-alpha: how much of the dst to keep.
+-    uint32_t ia = 0xFFFF - sa;
++  size_t stride = pb->private_impl.planes[0].stride;
++  uint8_t* row = pb->private_impl.planes[0].ptr + (stride * ((size_t)y));
+ 
+-    // Composite src (nonpremul) over dst (premul).
+-    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
+-    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
+-    db = ((sb * sa) + (db * ia)) / 0xFFFF;
++  switch (pb->pixcfg.private_impl.pixfmt.repr) {
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
++      wuffs_base__poke_u32le__no_bounds_check(row + (4 * ((size_t)x)), color);
++      break;
+ 
+-    // Convert from 16-bit color to 8-bit color.
+-    d[0] = (uint8_t)(db >> 8);
+-    d[1] = (uint8_t)(dg >> 8);
+-    d[2] = (uint8_t)(dr >> 8);
++      // Common formats above. Rarer formats below.
+ 
+-    s += 1 * 8;
+-    d += 1 * 3;
+-    n -= 1;
+-  }
++    case WUFFS_BASE__PIXEL_FORMAT__Y:
++      wuffs_base__poke_u8__no_bounds_check(
++          row + ((size_t)x),
++          wuffs_base__color_u32_argb_premul__as__color_u8_gray(color));
++      break;
++    case WUFFS_BASE__PIXEL_FORMAT__Y_16LE:
++      wuffs_base__poke_u16le__no_bounds_check(
++          row + (2 * ((size_t)x)),
++          wuffs_base__color_u32_argb_premul__as__color_u16_gray(color));
++      break;
++    case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
++      wuffs_base__poke_u16be__no_bounds_check(
++          row + (2 * ((size_t)x)),
++          wuffs_base__color_u32_argb_premul__as__color_u16_gray(color));
++      break;
++    case WUFFS_BASE__PIXEL_FORMAT__YA_NONPREMUL:
++      wuffs_base__poke_u16le__no_bounds_check(
++          row + (2 * ((size_t)x)),
++          wuffs_base__color_u32_argb_premul__as__color_u16_alpha_gray_nonpremul(
++              color));
++      break;
+ 
+-  return len;
+-}
++    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:
++      wuffs_base__poke_u8__no_bounds_check(
++          row + ((size_t)x), wuffs_base__pixel_palette__closest_element(
++                                 wuffs_base__pixel_buffer__palette(pb),
++                                 pb->pixcfg.private_impl.pixfmt, color));
++      break;
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr__rgba_premul__src(uint8_t* dst_ptr,
+-                                                  size_t dst_len,
+-                                                  uint8_t* dst_palette_ptr,
+-                                                  size_t dst_palette_len,
+-                                                  const uint8_t* src_ptr,
+-                                                  size_t src_len) {
+-  size_t dst_len3 = dst_len / 3;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
++      wuffs_base__poke_u16le__no_bounds_check(
++          row + (2 * ((size_t)x)),
++          wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(color));
++      break;
++    case WUFFS_BASE__PIXEL_FORMAT__BGR:
++      wuffs_base__poke_u24le__no_bounds_check(row + (3 * ((size_t)x)), color);
++      break;
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
++      wuffs_base__poke_u32le__no_bounds_check(
++          row + (4 * ((size_t)x)),
++          wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
++              color));
++      break;
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
++      wuffs_base__poke_u64le__no_bounds_check(
++          row + (8 * ((size_t)x)),
++          wuffs_base__color_u32_argb_premul__as__color_u64_argb_nonpremul(
++              color));
++      break;
+ 
+-  while (n >= 1) {
+-    uint8_t s0 = s[0];
+-    uint8_t s1 = s[1];
+-    uint8_t s2 = s[2];
+-    d[0] = s2;
+-    d[1] = s1;
+-    d[2] = s0;
++    case WUFFS_BASE__PIXEL_FORMAT__RGB:
++      wuffs_base__poke_u24le__no_bounds_check(
++          row + (3 * ((size_t)x)),
++          wuffs_private_impl__swap_u32_argb_abgr(color));
++      break;
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
++      wuffs_base__poke_u32le__no_bounds_check(
++          row + (4 * ((size_t)x)),
++          wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
++              wuffs_private_impl__swap_u32_argb_abgr(color)));
++      break;
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
++      wuffs_base__poke_u32le__no_bounds_check(
++          row + (4 * ((size_t)x)),
++          wuffs_private_impl__swap_u32_argb_abgr(color));
++      break;
+ 
+-    s += 1 * 4;
+-    d += 1 * 3;
+-    n -= 1;
++    default:
++      // TODO: support more formats.
++      return wuffs_base__make_status(wuffs_base__error__unsupported_option);
+   }
+ 
+-  return len;
++  return wuffs_base__make_status(NULL);
+ }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr__rgba_premul__src_over(uint8_t* dst_ptr,
+-                                                       size_t dst_len,
+-                                                       uint8_t* dst_palette_ptr,
+-                                                       size_t dst_palette_len,
+-                                                       const uint8_t* src_ptr,
+-                                                       size_t src_len) {
+-  size_t dst_len3 = dst_len / 3;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++// --------
+ 
+-  while (n >= 1) {
+-    // Extract 16-bit color components.
+-    uint32_t dr = 0x101 * ((uint32_t)d[2]);
+-    uint32_t dg = 0x101 * ((uint32_t)d[1]);
+-    uint32_t db = 0x101 * ((uint32_t)d[0]);
+-    uint32_t sa = 0x101 * ((uint32_t)s[3]);
+-    uint32_t sb = 0x101 * ((uint32_t)s[2]);
+-    uint32_t sg = 0x101 * ((uint32_t)s[1]);
+-    uint32_t sr = 0x101 * ((uint32_t)s[0]);
++static inline void  //
++wuffs_private_impl__pixel_buffer__set_color_u32_fill_rect__xx(
++    wuffs_base__pixel_buffer* pb,
++    wuffs_base__rect_ie_u32 rect,
++    uint16_t color) {
++  size_t stride = pb->private_impl.planes[0].stride;
++  uint32_t width = wuffs_base__rect_ie_u32__width(&rect);
++  if ((stride == (2 * ((uint64_t)width))) && (rect.min_incl_x == 0)) {
++    uint8_t* ptr =
++        pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y));
++    uint32_t height = wuffs_base__rect_ie_u32__height(&rect);
++    size_t n;
++    for (n = ((size_t)width) * ((size_t)height); n > 0; n--) {
++      wuffs_base__poke_u16le__no_bounds_check(ptr, color);
++      ptr += 2;
++    }
++    return;
++  }
+ 
+-    // Calculate the inverse of the src-alpha: how much of the dst to keep.
+-    uint32_t ia = 0xFFFF - sa;
++  uint32_t y;
++  for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
++    uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) +
++                   (2 * ((size_t)rect.min_incl_x));
++    uint32_t n;
++    for (n = width; n > 0; n--) {
++      wuffs_base__poke_u16le__no_bounds_check(ptr, color);
++      ptr += 2;
++    }
++  }
++}
+ 
+-    // Composite src (premul) over dst (premul).
+-    dr = sr + ((dr * ia) / 0xFFFF);
+-    dg = sg + ((dg * ia) / 0xFFFF);
+-    db = sb + ((db * ia) / 0xFFFF);
++static inline void  //
++wuffs_private_impl__pixel_buffer__set_color_u32_fill_rect__xxx(
++    wuffs_base__pixel_buffer* pb,
++    wuffs_base__rect_ie_u32 rect,
++    uint32_t color) {
++  size_t stride = pb->private_impl.planes[0].stride;
++  uint32_t width = wuffs_base__rect_ie_u32__width(&rect);
++  if ((stride == (3 * ((uint64_t)width))) && (rect.min_incl_x == 0)) {
++    uint8_t* ptr =
++        pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y));
++    uint32_t height = wuffs_base__rect_ie_u32__height(&rect);
++    size_t n;
++    for (n = ((size_t)width) * ((size_t)height); n > 0; n--) {
++      wuffs_base__poke_u24le__no_bounds_check(ptr, color);
++      ptr += 3;
++    }
++    return;
++  }
+ 
+-    // Convert from 16-bit color to 8-bit color.
+-    d[0] = (uint8_t)(db >> 8);
+-    d[1] = (uint8_t)(dg >> 8);
+-    d[2] = (uint8_t)(dr >> 8);
++  uint32_t y;
++  for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
++    uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) +
++                   (3 * ((size_t)rect.min_incl_x));
++    uint32_t n;
++    for (n = width; n > 0; n--) {
++      wuffs_base__poke_u24le__no_bounds_check(ptr, color);
++      ptr += 3;
++    }
++  }
++}
+ 
+-    s += 1 * 4;
+-    d += 1 * 3;
+-    n -= 1;
++static inline void  //
++wuffs_private_impl__pixel_buffer__set_color_u32_fill_rect__xxxx(
++    wuffs_base__pixel_buffer* pb,
++    wuffs_base__rect_ie_u32 rect,
++    uint32_t color) {
++  size_t stride = pb->private_impl.planes[0].stride;
++  uint32_t width = wuffs_base__rect_ie_u32__width(&rect);
++  if ((stride == (4 * ((uint64_t)width))) && (rect.min_incl_x == 0)) {
++    uint8_t* ptr =
++        pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y));
++    uint32_t height = wuffs_base__rect_ie_u32__height(&rect);
++    size_t n;
++    for (n = ((size_t)width) * ((size_t)height); n > 0; n--) {
++      wuffs_base__poke_u32le__no_bounds_check(ptr, color);
++      ptr += 4;
++    }
++    return;
+   }
+ 
+-  return len;
++  uint32_t y;
++  for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
++    uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) +
++                   (4 * ((size_t)rect.min_incl_x));
++    uint32_t n;
++    for (n = width; n > 0; n--) {
++      wuffs_base__poke_u32le__no_bounds_check(ptr, color);
++      ptr += 4;
++    }
++  }
+ }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgr__rgbx(uint8_t* dst_ptr,
+-                                      size_t dst_len,
+-                                      uint8_t* dst_palette_ptr,
+-                                      size_t dst_palette_len,
+-                                      const uint8_t* src_ptr,
+-                                      size_t src_len) {
+-  size_t dst_len3 = dst_len / 3;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++static inline void  //
++wuffs_private_impl__pixel_buffer__set_color_u32_fill_rect__xxxxxxxx(
++    wuffs_base__pixel_buffer* pb,
++    wuffs_base__rect_ie_u32 rect,
++    uint64_t color) {
++  size_t stride = pb->private_impl.planes[0].stride;
++  uint32_t width = wuffs_base__rect_ie_u32__width(&rect);
++  if ((stride == (8 * ((uint64_t)width))) && (rect.min_incl_x == 0)) {
++    uint8_t* ptr =
++        pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y));
++    uint32_t height = wuffs_base__rect_ie_u32__height(&rect);
++    size_t n;
++    for (n = ((size_t)width) * ((size_t)height); n > 0; n--) {
++      wuffs_base__poke_u64le__no_bounds_check(ptr, color);
++      ptr += 8;
++    }
++    return;
++  }
+ 
+-  // TODO: unroll.
++  uint32_t y;
++  for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
++    uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) +
++                   (8 * ((size_t)rect.min_incl_x));
++    uint32_t n;
++    for (n = width; n > 0; n--) {
++      wuffs_base__poke_u64le__no_bounds_check(ptr, color);
++      ptr += 8;
++    }
++  }
++}
+ 
+-  while (n >= 1) {
+-    uint8_t b0 = s[0];
+-    uint8_t b1 = s[1];
+-    uint8_t b2 = s[2];
+-    d[0] = b2;
+-    d[1] = b1;
+-    d[2] = b0;
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status  //
++wuffs_base__pixel_buffer__set_color_u32_fill_rect(
++    wuffs_base__pixel_buffer* pb,
++    wuffs_base__rect_ie_u32 rect,
++    wuffs_base__color_u32_argb_premul color) {
++  if (!pb) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  } else if (wuffs_base__rect_ie_u32__is_empty(&rect)) {
++    return wuffs_base__make_status(NULL);
++  }
++  wuffs_base__rect_ie_u32 bounds =
++      wuffs_base__pixel_config__bounds(&pb->pixcfg);
++  if (!wuffs_base__rect_ie_u32__contains_rect(&bounds, rect)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
+ 
+-    s += 1 * 4;
+-    d += 1 * 3;
+-    n -= 1;
++  if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) {
++    // TODO: support planar formats.
++    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
+   }
+ 
+-  return len;
+-}
++  switch (pb->pixcfg.private_impl.pixfmt.repr) {
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
++      wuffs_private_impl__pixel_buffer__set_color_u32_fill_rect__xxxx(pb, rect,
++                                                                      color);
++      return wuffs_base__make_status(NULL);
+ 
+-// --------
++      // Common formats above. Rarer formats below.
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
++      wuffs_private_impl__pixel_buffer__set_color_u32_fill_rect__xx(
++          pb, rect,
++          wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(color));
++      return wuffs_base__make_status(NULL);
+ 
+-  while (n >= 1) {
+-    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
+-    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4),
+-        wuffs_base__composite_nonpremul_nonpremul_u32_axxx(d0, s0));
++    case WUFFS_BASE__PIXEL_FORMAT__BGR:
++      wuffs_private_impl__pixel_buffer__set_color_u32_fill_rect__xxx(pb, rect,
++                                                                     color);
++      return wuffs_base__make_status(NULL);
+ 
+-    s += 1 * 4;
+-    d += 1 * 4;
+-    n -= 1;
+-  }
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
++      wuffs_private_impl__pixel_buffer__set_color_u32_fill_rect__xxxx(
++          pb, rect,
++          wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
++              color));
++      return wuffs_base__make_status(NULL);
+ 
+-  return len;
+-}
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
++      wuffs_private_impl__pixel_buffer__set_color_u32_fill_rect__xxxxxxxx(
++          pb, rect,
++          wuffs_base__color_u32_argb_premul__as__color_u64_argb_nonpremul(
++              color));
++      return wuffs_base__make_status(NULL);
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
+-  size_t src_len8 = src_len / 8;
+-  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
++      wuffs_private_impl__pixel_buffer__set_color_u32_fill_rect__xxxx(
++          pb, rect,
++          wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
++              wuffs_private_impl__swap_u32_argb_abgr(color)));
++      return wuffs_base__make_status(NULL);
+ 
+-  size_t n = len;
+-  while (n >= 1) {
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4), wuffs_base__color_u64__as__color_u32(
+-                         wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8))));
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
++      wuffs_private_impl__pixel_buffer__set_color_u32_fill_rect__xxxx(
++          pb, rect, wuffs_private_impl__swap_u32_argb_abgr(color));
++      return wuffs_base__make_status(NULL);
++  }
+ 
+-    s += 1 * 8;
+-    d += 1 * 4;
+-    n -= 1;
++  uint32_t y;
++  for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
++    uint32_t x;
++    for (x = rect.min_incl_x; x < rect.max_excl_x; x++) {
++      wuffs_base__pixel_buffer__set_color_u32_at(pb, x, y, color);
++    }
+   }
+-  return len;
++  return wuffs_base__make_status(NULL);
+ }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
+-  size_t src_len8 = src_len / 8;
+-  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
+-
+-  while (n >= 1) {
+-    uint64_t d0 = wuffs_base__color_u32__as__color_u64(
+-        wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)));
+-    uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4),
+-        wuffs_base__color_u64__as__color_u32(
+-            wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0)));
++// --------
+ 
+-    s += 1 * 8;
+-    d += 1 * 4;
+-    n -= 1;
++WUFFS_BASE__MAYBE_STATIC uint8_t  //
++wuffs_base__pixel_palette__closest_element(
++    wuffs_base__slice_u8 palette_slice,
++    wuffs_base__pixel_format palette_format,
++    wuffs_base__color_u32_argb_premul c) {
++  size_t n = palette_slice.len / 4;
++  if (n > (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
++    n = (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4);
+   }
++  size_t best_index = 0;
++  uint64_t best_score = 0xFFFFFFFFFFFFFFFF;
+ 
+-  return len;
+-}
+-
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++  // Work in 16-bit color.
++  uint32_t ca = 0x101 * (0xFF & (c >> 24));
++  uint32_t cr = 0x101 * (0xFF & (c >> 16));
++  uint32_t cg = 0x101 * (0xFF & (c >> 8));
++  uint32_t cb = 0x101 * (0xFF & (c >> 0));
+ 
+-  while (n >= 1) {
+-    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4),
+-        wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(s0));
++  switch (palette_format.repr) {
++    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: {
++      bool nonpremul = palette_format.repr ==
++                       WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL;
+ 
+-    s += 1 * 4;
+-    d += 1 * 4;
+-    n -= 1;
++      size_t i;
++      for (i = 0; i < n; i++) {
++        // Work in 16-bit color.
++        uint32_t pb = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 0]));
++        uint32_t pg = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 1]));
++        uint32_t pr = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 2]));
++        uint32_t pa = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 3]));
++
++        // Convert to premultiplied alpha.
++        if (nonpremul && (pa != 0xFFFF)) {
++          pb = (pb * pa) / 0xFFFF;
++          pg = (pg * pa) / 0xFFFF;
++          pr = (pr * pa) / 0xFFFF;
++        }
++
++        // These deltas are conceptually int32_t (signed) but after squaring,
++        // it's equivalent to work in uint32_t (unsigned).
++        pb -= cb;
++        pg -= cg;
++        pr -= cr;
++        pa -= ca;
++        uint64_t score = ((uint64_t)(pb * pb)) + ((uint64_t)(pg * pg)) +
++                         ((uint64_t)(pr * pr)) + ((uint64_t)(pa * pa));
++        if (best_score > score) {
++          best_score = score;
++          best_index = i;
++        }
++      }
++      break;
++    }
+   }
+ 
+-  return len;
++  return (uint8_t)best_index;
+ }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++// --------
+ 
+-  while (n >= 1) {
+-    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
+-    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4), wuffs_base__composite_nonpremul_premul_u32_axxx(d0, s0));
++static inline uint32_t  //
++wuffs_private_impl__composite_nonpremul_nonpremul_u32_axxx(
++    uint32_t dst_nonpremul,
++    uint32_t src_nonpremul) {
++  // Extract 16-bit color components.
++  //
++  // If the destination is transparent then SRC_OVER is equivalent to SRC: just
++  // return src_nonpremul. This isn't just an optimization (skipping the rest
++  // of the function's computation). It also preserves the nonpremul
++  // distinction between e.g. transparent red and transparent blue that would
++  // otherwise be lost by converting from nonpremul to premul and back.
++  uint32_t da = 0x101 * (0xFF & (dst_nonpremul >> 24));
++  if (da == 0) {
++    return src_nonpremul;
++  }
++  uint32_t dr = 0x101 * (0xFF & (dst_nonpremul >> 16));
++  uint32_t dg = 0x101 * (0xFF & (dst_nonpremul >> 8));
++  uint32_t db = 0x101 * (0xFF & (dst_nonpremul >> 0));
++  uint32_t sa = 0x101 * (0xFF & (src_nonpremul >> 24));
++  uint32_t sr = 0x101 * (0xFF & (src_nonpremul >> 16));
++  uint32_t sg = 0x101 * (0xFF & (src_nonpremul >> 8));
++  uint32_t sb = 0x101 * (0xFF & (src_nonpremul >> 0));
+ 
+-    s += 1 * 4;
+-    d += 1 * 4;
+-    n -= 1;
++  // Convert dst from nonpremul to premul.
++  dr = (dr * da) / 0xFFFF;
++  dg = (dg * da) / 0xFFFF;
++  db = (db * da) / 0xFFFF;
++
++  // Calculate the inverse of the src-alpha: how much of the dst to keep.
++  uint32_t ia = 0xFFFF - sa;
++
++  // Composite src (nonpremul) over dst (premul).
++  da = sa + ((da * ia) / 0xFFFF);
++  dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
++  dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
++  db = ((sb * sa) + (db * ia)) / 0xFFFF;
++
++  // Convert dst from premul to nonpremul.
++  if (da != 0) {
++    dr = (dr * 0xFFFF) / da;
++    dg = (dg * 0xFFFF) / da;
++    db = (db * 0xFFFF) / da;
+   }
+ 
+-  return len;
++  // Convert from 16-bit color to 8-bit color.
++  da >>= 8;
++  dr >>= 8;
++  dg >>= 8;
++  db >>= 8;
++
++  // Combine components.
++  return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
+ }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_nonpremul__index_bgra_nonpremul__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  if (dst_palette_len !=
+-      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+-    return 0;
++static inline uint64_t  //
++wuffs_private_impl__composite_nonpremul_nonpremul_u64_axxx(
++    uint64_t dst_nonpremul,
++    uint64_t src_nonpremul) {
++  // Extract components.
++  //
++  // If the destination is transparent then SRC_OVER is equivalent to SRC: just
++  // return src_nonpremul. This isn't just an optimization (skipping the rest
++  // of the function's computation). It also preserves the nonpremul
++  // distinction between e.g. transparent red and transparent blue that would
++  // otherwise be lost by converting from nonpremul to premul and back.
++  uint64_t da = 0xFFFF & (dst_nonpremul >> 48);
++  if (da == 0) {
++    return src_nonpremul;
+   }
+-  size_t dst_len4 = dst_len / 4;
+-  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++  uint64_t dr = 0xFFFF & (dst_nonpremul >> 32);
++  uint64_t dg = 0xFFFF & (dst_nonpremul >> 16);
++  uint64_t db = 0xFFFF & (dst_nonpremul >> 0);
++  uint64_t sa = 0xFFFF & (src_nonpremul >> 48);
++  uint64_t sr = 0xFFFF & (src_nonpremul >> 32);
++  uint64_t sg = 0xFFFF & (src_nonpremul >> 16);
++  uint64_t sb = 0xFFFF & (src_nonpremul >> 0);
+ 
+-  // TODO: unroll.
++  // Convert dst from nonpremul to premul.
++  dr = (dr * da) / 0xFFFF;
++  dg = (dg * da) / 0xFFFF;
++  db = (db * da) / 0xFFFF;
+ 
+-  while (n >= 1) {
+-    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
+-    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
+-                                                          ((size_t)s[0] * 4));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4),
+-        wuffs_base__composite_nonpremul_nonpremul_u32_axxx(d0, s0));
++  // Calculate the inverse of the src-alpha: how much of the dst to keep.
++  uint64_t ia = 0xFFFF - sa;
+ 
+-    s += 1 * 1;
+-    d += 1 * 4;
+-    n -= 1;
++  // Composite src (nonpremul) over dst (premul).
++  da = sa + ((da * ia) / 0xFFFF);
++  dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
++  dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
++  db = ((sb * sa) + (db * ia)) / 0xFFFF;
++
++  // Convert dst from premul to nonpremul.
++  if (da != 0) {
++    dr = (dr * 0xFFFF) / da;
++    dg = (dg * 0xFFFF) / da;
++    db = (db * 0xFFFF) / da;
+   }
+ 
+-  return len;
++  // Combine components.
++  return (db << 0) | (dg << 16) | (dr << 32) | (da << 48);
+ }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_nonpremul__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++static inline uint32_t  //
++wuffs_private_impl__composite_nonpremul_premul_u32_axxx(uint32_t dst_nonpremul,
++                                                        uint32_t src_premul) {
++  // Extract 16-bit color components.
++  uint32_t da = 0x101 * (0xFF & (dst_nonpremul >> 24));
++  uint32_t dr = 0x101 * (0xFF & (dst_nonpremul >> 16));
++  uint32_t dg = 0x101 * (0xFF & (dst_nonpremul >> 8));
++  uint32_t db = 0x101 * (0xFF & (dst_nonpremul >> 0));
++  uint32_t sa = 0x101 * (0xFF & (src_premul >> 24));
++  uint32_t sr = 0x101 * (0xFF & (src_premul >> 16));
++  uint32_t sg = 0x101 * (0xFF & (src_premul >> 8));
++  uint32_t sb = 0x101 * (0xFF & (src_premul >> 0));
+ 
+-  while (n >= 1) {
+-    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
+-    uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
+-        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4),
+-        wuffs_base__composite_nonpremul_nonpremul_u32_axxx(d0, s0));
++  // Convert dst from nonpremul to premul.
++  dr = (dr * da) / 0xFFFF;
++  dg = (dg * da) / 0xFFFF;
++  db = (db * da) / 0xFFFF;
+ 
+-    s += 1 * 4;
+-    d += 1 * 4;
+-    n -= 1;
++  // Calculate the inverse of the src-alpha: how much of the dst to keep.
++  uint32_t ia = 0xFFFF - sa;
++
++  // Composite src (premul) over dst (premul).
++  da = sa + ((da * ia) / 0xFFFF);
++  dr = sr + ((dr * ia) / 0xFFFF);
++  dg = sg + ((dg * ia) / 0xFFFF);
++  db = sb + ((db * ia) / 0xFFFF);
++
++  // Convert dst from premul to nonpremul.
++  if (da != 0) {
++    dr = (dr * 0xFFFF) / da;
++    dg = (dg * 0xFFFF) / da;
++    db = (db * 0xFFFF) / da;
+   }
+ 
+-  return len;
++  // Convert from 16-bit color to 8-bit color.
++  da >>= 8;
++  dr >>= 8;
++  dg >>= 8;
++  db >>= 8;
++
++  // Combine components.
++  return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
+ }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++static inline uint64_t  //
++wuffs_private_impl__composite_nonpremul_premul_u64_axxx(uint64_t dst_nonpremul,
++                                                        uint64_t src_premul) {
++  // Extract components.
++  uint64_t da = 0xFFFF & (dst_nonpremul >> 48);
++  uint64_t dr = 0xFFFF & (dst_nonpremul >> 32);
++  uint64_t dg = 0xFFFF & (dst_nonpremul >> 16);
++  uint64_t db = 0xFFFF & (dst_nonpremul >> 0);
++  uint64_t sa = 0xFFFF & (src_premul >> 48);
++  uint64_t sr = 0xFFFF & (src_premul >> 32);
++  uint64_t sg = 0xFFFF & (src_premul >> 16);
++  uint64_t sb = 0xFFFF & (src_premul >> 0);
+ 
+-  while (n >= 1) {
+-    uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
+-        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4),
+-        wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(s0));
++  // Convert dst from nonpremul to premul.
++  dr = (dr * da) / 0xFFFF;
++  dg = (dg * da) / 0xFFFF;
++  db = (db * da) / 0xFFFF;
+ 
+-    s += 1 * 4;
+-    d += 1 * 4;
+-    n -= 1;
++  // Calculate the inverse of the src-alpha: how much of the dst to keep.
++  uint64_t ia = 0xFFFF - sa;
++
++  // Composite src (premul) over dst (premul).
++  da = sa + ((da * ia) / 0xFFFF);
++  dr = sr + ((dr * ia) / 0xFFFF);
++  dg = sg + ((dg * ia) / 0xFFFF);
++  db = sb + ((db * ia) / 0xFFFF);
++
++  // Convert dst from premul to nonpremul.
++  if (da != 0) {
++    dr = (dr * 0xFFFF) / da;
++    dg = (dg * 0xFFFF) / da;
++    db = (db * 0xFFFF) / da;
+   }
+ 
+-  return len;
++  // Combine components.
++  return (db << 0) | (dg << 16) | (dr << 32) | (da << 48);
+ }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++static inline uint32_t  //
++wuffs_private_impl__composite_premul_nonpremul_u32_axxx(
++    uint32_t dst_premul,
++    uint32_t src_nonpremul) {
++  // Extract 16-bit color components.
++  uint32_t da = 0x101 * (0xFF & (dst_premul >> 24));
++  uint32_t dr = 0x101 * (0xFF & (dst_premul >> 16));
++  uint32_t dg = 0x101 * (0xFF & (dst_premul >> 8));
++  uint32_t db = 0x101 * (0xFF & (dst_premul >> 0));
++  uint32_t sa = 0x101 * (0xFF & (src_nonpremul >> 24));
++  uint32_t sr = 0x101 * (0xFF & (src_nonpremul >> 16));
++  uint32_t sg = 0x101 * (0xFF & (src_nonpremul >> 8));
++  uint32_t sb = 0x101 * (0xFF & (src_nonpremul >> 0));
+ 
+-  while (n >= 1) {
+-    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
+-    uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
+-        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4), wuffs_base__composite_nonpremul_premul_u32_axxx(d0, s0));
++  // Calculate the inverse of the src-alpha: how much of the dst to keep.
++  uint32_t ia = 0xFFFF - sa;
+ 
+-    s += 1 * 4;
+-    d += 1 * 4;
+-    n -= 1;
+-  }
++  // Composite src (nonpremul) over dst (premul).
++  da = sa + ((da * ia) / 0xFFFF);
++  dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
++  dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
++  db = ((sb * sa) + (db * ia)) / 0xFFFF;
+ 
+-  return len;
++  // Convert from 16-bit color to 8-bit color.
++  da >>= 8;
++  dr >>= 8;
++  dg >>= 8;
++  db >>= 8;
++
++  // Combine components.
++  return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
++}
++
++static inline uint64_t  //
++wuffs_private_impl__composite_premul_nonpremul_u64_axxx(
++    uint64_t dst_premul,
++    uint64_t src_nonpremul) {
++  // Extract components.
++  uint64_t da = 0xFFFF & (dst_premul >> 48);
++  uint64_t dr = 0xFFFF & (dst_premul >> 32);
++  uint64_t dg = 0xFFFF & (dst_premul >> 16);
++  uint64_t db = 0xFFFF & (dst_premul >> 0);
++  uint64_t sa = 0xFFFF & (src_nonpremul >> 48);
++  uint64_t sr = 0xFFFF & (src_nonpremul >> 32);
++  uint64_t sg = 0xFFFF & (src_nonpremul >> 16);
++  uint64_t sb = 0xFFFF & (src_nonpremul >> 0);
++
++  // Calculate the inverse of the src-alpha: how much of the dst to keep.
++  uint64_t ia = 0xFFFF - sa;
++
++  // Composite src (nonpremul) over dst (premul).
++  da = sa + ((da * ia) / 0xFFFF);
++  dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
++  dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
++  db = ((sb * sa) + (db * ia)) / 0xFFFF;
++
++  // Combine components.
++  return (db << 0) | (dg << 16) | (dr << 32) | (da << 48);
++}
++
++static inline uint32_t  //
++wuffs_private_impl__composite_premul_premul_u32_axxx(uint32_t dst_premul,
++                                                     uint32_t src_premul) {
++  // Extract 16-bit color components.
++  uint32_t da = 0x101 * (0xFF & (dst_premul >> 24));
++  uint32_t dr = 0x101 * (0xFF & (dst_premul >> 16));
++  uint32_t dg = 0x101 * (0xFF & (dst_premul >> 8));
++  uint32_t db = 0x101 * (0xFF & (dst_premul >> 0));
++  uint32_t sa = 0x101 * (0xFF & (src_premul >> 24));
++  uint32_t sr = 0x101 * (0xFF & (src_premul >> 16));
++  uint32_t sg = 0x101 * (0xFF & (src_premul >> 8));
++  uint32_t sb = 0x101 * (0xFF & (src_premul >> 0));
++
++  // Calculate the inverse of the src-alpha: how much of the dst to keep.
++  uint32_t ia = 0xFFFF - sa;
++
++  // Composite src (premul) over dst (premul).
++  da = sa + ((da * ia) / 0xFFFF);
++  dr = sr + ((dr * ia) / 0xFFFF);
++  dg = sg + ((dg * ia) / 0xFFFF);
++  db = sb + ((db * ia) / 0xFFFF);
++
++  // Convert from 16-bit color to 8-bit color.
++  da >>= 8;
++  dr >>= 8;
++  dg >>= 8;
++  db >>= 8;
++
++  // Combine components.
++  return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
+ }
+ 
+ // --------
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len8 = dst_len / 8;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
++wuffs_private_impl__swizzle_squash_align4_bgr_565_8888(uint8_t* dst_ptr,
++                                                       size_t dst_len,
++                                                       const uint8_t* src_ptr,
++                                                       size_t src_len,
++                                                       bool nonpremul) {
++  size_t len = (dst_len < src_len ? dst_len : src_len) / 4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+ 
+   size_t n = len;
+-  while (n >= 1) {
+-    uint8_t s0 = s[0];
+-    uint8_t s1 = s[1];
+-    uint8_t s2 = s[2];
+-    uint8_t s3 = s[3];
+-    d[0] = s0;
+-    d[1] = s0;
+-    d[2] = s1;
+-    d[3] = s1;
+-    d[4] = s2;
+-    d[5] = s2;
+-    d[6] = s3;
+-    d[7] = s3;
+-
+-    s += 1 * 4;
+-    d += 1 * 8;
+-    n -= 1;
++  while (n--) {
++    uint32_t argb = wuffs_base__peek_u32le__no_bounds_check(s);
++    if (nonpremul) {
++      argb =
++          wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(argb);
++    }
++    uint32_t b5 = 0x1F & (argb >> (8 - 5));
++    uint32_t g6 = 0x3F & (argb >> (16 - 6));
++    uint32_t r5 = 0x1F & (argb >> (24 - 5));
++    uint32_t alpha = argb & 0xFF000000;
++    wuffs_base__poke_u32le__no_bounds_check(
++        d, alpha | (r5 << 11) | (g6 << 5) | (b5 << 0));
++    s += 4;
++    d += 4;
+   }
+   return len;
+ }
+ 
++// --------
++
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len8 = dst_len / 8;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
++wuffs_private_impl__swizzle_swap_rgb_bgr(uint8_t* dst_ptr,
++                                         size_t dst_len,
++                                         uint8_t* dst_palette_ptr,
++                                         size_t dst_palette_len,
++                                         const uint8_t* src_ptr,
++                                         size_t src_len) {
++  size_t len = (dst_len < src_len ? dst_len : src_len) / 3;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+ 
+   size_t n = len;
+-  while (n >= 1) {
+-    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
+-    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
+-        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
+-    wuffs_base__poke_u64le__no_bounds_check(
+-        d + (0 * 8),
+-        wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0));
+-
+-    s += 1 * 4;
+-    d += 1 * 8;
+-    n -= 1;
++  while (n--) {
++    uint8_t s0 = s[0];
++    uint8_t s1 = s[1];
++    uint8_t s2 = s[2];
++    d[0] = s2;
++    d[1] = s1;
++    d[2] = s0;
++    s += 3;
++    d += 3;
+   }
+   return len;
+ }
+ 
++// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul_4x16le__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len8 = dst_len / 8;
+-  size_t src_len8 = src_len / 8;
+-  size_t len = (dst_len8 < src_len8) ? dst_len8 : src_len8;
++wuffs_private_impl__swizzle_swap_rgbx_bgrx__x86_sse42(uint8_t* dst_ptr,
++                                                      size_t dst_len,
++                                                      uint8_t* dst_palette_ptr,
++                                                      size_t dst_palette_len,
++                                                      const uint8_t* src_ptr,
++                                                      size_t src_len) {
++  size_t len = (dst_len < src_len ? dst_len : src_len) / 4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+-
+   size_t n = len;
+-  while (n >= 1) {
+-    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
+-    uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
+-    wuffs_base__poke_u64le__no_bounds_check(
+-        d + (0 * 8),
+-        wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0));
+ 
+-    s += 1 * 8;
+-    d += 1 * 8;
+-    n -= 1;
++  __m128i shuffle = _mm_set_epi8(+0x0F, +0x0C, +0x0D, +0x0E,  //
++                                 +0x0B, +0x08, +0x09, +0x0A,  //
++                                 +0x07, +0x04, +0x05, +0x06,  //
++                                 +0x03, +0x00, +0x01, +0x02);
++
++  while (n >= 4) {
++    __m128i x;
++    x = _mm_lddqu_si128((const __m128i*)(const void*)s);
++    x = _mm_shuffle_epi8(x, shuffle);
++    _mm_storeu_si128((__m128i*)(void*)d, x);
++
++    s += 4 * 4;
++    d += 4 * 4;
++    n -= 4;
++  }
++
++  while (n--) {
++    uint8_t s0 = s[0];
++    uint8_t s1 = s[1];
++    uint8_t s2 = s[2];
++    uint8_t s3 = s[3];
++    d[0] = s2;
++    d[1] = s1;
++    d[2] = s0;
++    d[3] = s3;
++    s += 4;
++    d += 4;
+   }
+   return len;
+ }
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len8 = dst_len / 8;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
++wuffs_private_impl__swizzle_swap_rgbx_bgrx(uint8_t* dst_ptr,
++                                           size_t dst_len,
++                                           uint8_t* dst_palette_ptr,
++                                           size_t dst_palette_len,
++                                           const uint8_t* src_ptr,
++                                           size_t src_len) {
++  size_t len = (dst_len < src_len ? dst_len : src_len) / 4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+ 
+   size_t n = len;
+-  while (n >= 1) {
+-    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
+-        wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
+-            wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
+-    wuffs_base__poke_u64le__no_bounds_check(d + (0 * 8), s0);
+-
+-    s += 1 * 4;
+-    d += 1 * 8;
+-    n -= 1;
++  while (n--) {
++    uint8_t s0 = s[0];
++    uint8_t s1 = s[1];
++    uint8_t s2 = s[2];
++    uint8_t s3 = s[3];
++    d[0] = s2;
++    d[1] = s1;
++    d[2] = s0;
++    d[3] = s3;
++    s += 4;
++    d += 4;
+   }
+   return len;
+ }
+ 
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len8 = dst_len / 8;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-
+-  size_t n = len;
+-  while (n >= 1) {
+-    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
+-    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
+-        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
+-    wuffs_base__poke_u64le__no_bounds_check(
+-        d + (0 * 8), wuffs_base__composite_nonpremul_premul_u64_axxx(d0, s0));
++// --------
+ 
+-    s += 1 * 4;
+-    d += 1 * 8;
+-    n -= 1;
++static uint64_t  //
++wuffs_private_impl__swizzle_copy_1_1(uint8_t* dst_ptr,
++                                     size_t dst_len,
++                                     uint8_t* dst_palette_ptr,
++                                     size_t dst_palette_len,
++                                     const uint8_t* src_ptr,
++                                     size_t src_len) {
++  size_t len = (dst_len < src_len) ? dst_len : src_len;
++  if (len > 0) {
++    memmove(dst_ptr, src_ptr, len);
+   }
+   return len;
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__index_bgra_nonpremul__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  if (dst_palette_len !=
+-      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+-    return 0;
++wuffs_private_impl__swizzle_copy_2_2(uint8_t* dst_ptr,
++                                     size_t dst_len,
++                                     uint8_t* dst_palette_ptr,
++                                     size_t dst_palette_len,
++                                     const uint8_t* src_ptr,
++                                     size_t src_len) {
++  size_t dst_len2 = dst_len / 2;
++  size_t src_len2 = src_len / 2;
++  size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2;
++  if (len > 0) {
++    memmove(dst_ptr, src_ptr, len * 2);
+   }
+-  size_t dst_len8 = dst_len / 8;
+-  size_t len = (dst_len8 < src_len) ? dst_len8 : src_len;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
+-
+-  while (n >= 1) {
+-    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
+-    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
+-        wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
+-                                                ((size_t)s[0] * 4)));
+-    wuffs_base__poke_u64le__no_bounds_check(
+-        d + (0 * 8),
+-        wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0));
++  return len;
++}
+ 
+-    s += 1 * 1;
+-    d += 1 * 8;
+-    n -= 1;
++static uint64_t  //
++wuffs_private_impl__swizzle_copy_3_3(uint8_t* dst_ptr,
++                                     size_t dst_len,
++                                     uint8_t* dst_palette_ptr,
++                                     size_t dst_palette_len,
++                                     const uint8_t* src_ptr,
++                                     size_t src_len) {
++  size_t dst_len3 = dst_len / 3;
++  size_t src_len3 = src_len / 3;
++  size_t len = (dst_len3 < src_len3) ? dst_len3 : src_len3;
++  if (len > 0) {
++    memmove(dst_ptr, src_ptr, len * 3);
+   }
+-
+   return len;
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len8 = dst_len / 8;
++wuffs_private_impl__swizzle_copy_4_4(uint8_t* dst_ptr,
++                                     size_t dst_len,
++                                     uint8_t* dst_palette_ptr,
++                                     size_t dst_palette_len,
++                                     const uint8_t* src_ptr,
++                                     size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
+   size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-
+-  size_t n = len;
+-  while (n >= 1) {
+-    uint8_t s0 = s[0];
+-    uint8_t s1 = s[1];
+-    uint8_t s2 = s[2];
+-    uint8_t s3 = s[3];
+-    d[0] = s2;
+-    d[1] = s2;
+-    d[2] = s1;
+-    d[3] = s1;
+-    d[4] = s0;
+-    d[5] = s0;
+-    d[6] = s3;
+-    d[7] = s3;
+-
+-    s += 1 * 4;
+-    d += 1 * 8;
+-    n -= 1;
++  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
++  if (len > 0) {
++    memmove(dst_ptr, src_ptr, len * 4);
+   }
+   return len;
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
++wuffs_private_impl__swizzle_copy_8_8(uint8_t* dst_ptr,
++                                     size_t dst_len,
++                                     uint8_t* dst_palette_ptr,
++                                     size_t dst_palette_len,
++                                     const uint8_t* src_ptr,
++                                     size_t src_len) {
+   size_t dst_len8 = dst_len / 8;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-
+-  size_t n = len;
+-  while (n >= 1) {
+-    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
+-    uint64_t s0 =
+-        wuffs_base__color_u32__as__color_u64(wuffs_base__swap_u32_argb_abgr(
+-            wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
+-    wuffs_base__poke_u64le__no_bounds_check(
+-        d + (0 * 8),
+-        wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0));
+-
+-    s += 1 * 4;
+-    d += 1 * 8;
+-    n -= 1;
++  size_t src_len8 = src_len / 8;
++  size_t len = (dst_len8 < src_len8) ? dst_len8 : src_len8;
++  if (len > 0) {
++    memmove(dst_ptr, src_ptr, len * 8);
+   }
+   return len;
+ }
+ 
++// --------
++
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len8 = dst_len / 8;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
++wuffs_private_impl__swizzle_bgr_565__bgr(uint8_t* dst_ptr,
++                                         size_t dst_len,
++                                         uint8_t* dst_palette_ptr,
++                                         size_t dst_palette_len,
++                                         const uint8_t* src_ptr,
++                                         size_t src_len) {
++  size_t dst_len2 = dst_len / 2;
++  size_t src_len3 = src_len / 3;
++  size_t len = (dst_len2 < src_len3) ? dst_len2 : src_len3;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+-
+   size_t n = len;
++
++  // TODO: unroll.
++
+   while (n >= 1) {
+-    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
+-        wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
+-            wuffs_base__swap_u32_argb_abgr(
+-                wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))));
+-    wuffs_base__poke_u64le__no_bounds_check(d + (0 * 8), s0);
++    uint32_t b5 = (uint32_t)(s[0] >> 3);
++    uint32_t g6 = (uint32_t)(s[1] >> 2);
++    uint32_t r5 = (uint32_t)(s[2] >> 3);
++    uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0);
++    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
+ 
+-    s += 1 * 4;
+-    d += 1 * 8;
++    s += 1 * 3;
++    d += 1 * 2;
+     n -= 1;
+   }
++
+   return len;
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len8 = dst_len / 8;
++wuffs_private_impl__swizzle_bgr_565__bgrx(uint8_t* dst_ptr,
++                                          size_t dst_len,
++                                          uint8_t* dst_palette_ptr,
++                                          size_t dst_palette_len,
++                                          const uint8_t* src_ptr,
++                                          size_t src_len) {
++  size_t dst_len2 = dst_len / 2;
+   size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
++  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+-
+   size_t n = len;
++
++  // TODO: unroll.
++
+   while (n >= 1) {
+-    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
+-    uint64_t s0 =
+-        wuffs_base__color_u32__as__color_u64(wuffs_base__swap_u32_argb_abgr(
+-            wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
+-    wuffs_base__poke_u64le__no_bounds_check(
+-        d + (0 * 8), wuffs_base__composite_nonpremul_premul_u64_axxx(d0, s0));
++    uint32_t b5 = (uint32_t)(s[0] >> 3);
++    uint32_t g6 = (uint32_t)(s[1] >> 2);
++    uint32_t r5 = (uint32_t)(s[2] >> 3);
++    uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0);
++    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
+ 
+     s += 1 * 4;
+-    d += 1 * 8;
++    d += 1 * 2;
+     n -= 1;
+   }
++
+   return len;
+ }
+ 
+-// --------
+-
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src(
++wuffs_private_impl__swizzle_bgr_565__bgra_nonpremul__src(
+     uint8_t* dst_ptr,
+     size_t dst_len,
+     uint8_t* dst_palette_ptr,
+     size_t dst_palette_len,
+     const uint8_t* src_ptr,
+     size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
++  size_t dst_len2 = dst_len / 2;
+   size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
++  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+@@ -22217,13 +23221,14 @@ wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src(
+   // TODO: unroll.
+ 
+   while (n >= 1) {
+-    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4),
+-        wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(s0));
++    wuffs_base__poke_u16le__no_bounds_check(
++        d + (0 * 2),
++        wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
++            wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
++                wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))));
+ 
+     s += 1 * 4;
+-    d += 1 * 4;
++    d += 1 * 2;
+     n -= 1;
+   }
+ 
+@@ -22231,16 +23236,16 @@ wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src(
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src(
++wuffs_private_impl__swizzle_bgr_565__bgra_nonpremul_4x16le__src(
+     uint8_t* dst_ptr,
+     size_t dst_len,
+     uint8_t* dst_palette_ptr,
+     size_t dst_palette_len,
+     const uint8_t* src_ptr,
+     size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
++  size_t dst_len2 = dst_len / 2;
+   size_t src_len8 = src_len / 8;
+-  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
++  size_t len = (dst_len2 < src_len8) ? dst_len2 : src_len8;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+@@ -22248,13 +23253,14 @@ wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src(
+   // TODO: unroll.
+ 
+   while (n >= 1) {
+-    uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4),
+-        wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(s0));
++    wuffs_base__poke_u16le__no_bounds_check(
++        d + (0 * 2),
++        wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
++            wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
++                wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)))));
+ 
+     s += 1 * 8;
+-    d += 1 * 4;
++    d += 1 * 2;
+     n -= 1;
+   }
+ 
+@@ -22262,16 +23268,16 @@ wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src(
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over(
++wuffs_private_impl__swizzle_bgr_565__bgra_nonpremul__src_over(
+     uint8_t* dst_ptr,
+     size_t dst_len,
+     uint8_t* dst_palette_ptr,
+     size_t dst_palette_len,
+     const uint8_t* src_ptr,
+     size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
++  size_t dst_len2 = dst_len / 2;
+   size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
++  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+@@ -22279,13 +23285,38 @@ wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over(
+   // TODO: unroll.
+ 
+   while (n >= 1) {
+-    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
+-    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4), wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0));
++    // Extract 16-bit color components.
++    uint32_t sa = 0x101 * ((uint32_t)s[3]);
++    uint32_t sr = 0x101 * ((uint32_t)s[2]);
++    uint32_t sg = 0x101 * ((uint32_t)s[1]);
++    uint32_t sb = 0x101 * ((uint32_t)s[0]);
++
++    // Convert from 565 color to 16-bit color.
++    uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
++    uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
++    uint32_t dr = (0x8421 * old_r5) >> 4;
++    uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
++    uint32_t dg = (0x1041 * old_g6) >> 2;
++    uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
++    uint32_t db = (0x8421 * old_b5) >> 4;
++
++    // Calculate the inverse of the src-alpha: how much of the dst to keep.
++    uint32_t ia = 0xFFFF - sa;
++
++    // Composite src (nonpremul) over dst (premul).
++    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
++    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
++    db = ((sb * sa) + (db * ia)) / 0xFFFF;
++
++    // Convert from 16-bit color to 565 color and combine the components.
++    uint32_t new_r5 = 0x1F & (dr >> 11);
++    uint32_t new_g6 = 0x3F & (dg >> 10);
++    uint32_t new_b5 = 0x1F & (db >> 11);
++    uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
++    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
+ 
+     s += 1 * 4;
+-    d += 1 * 4;
++    d += 1 * 2;
+     n -= 1;
+   }
+ 
+@@ -22293,16 +23324,16 @@ wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over(
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src_over(
++wuffs_private_impl__swizzle_bgr_565__bgra_nonpremul_4x16le__src_over(
+     uint8_t* dst_ptr,
+     size_t dst_len,
+     uint8_t* dst_palette_ptr,
+     size_t dst_palette_len,
+     const uint8_t* src_ptr,
+     size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
++  size_t dst_len2 = dst_len / 2;
+   size_t src_len8 = src_len / 8;
+-  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
++  size_t len = (dst_len2 < src_len8) ? dst_len2 : src_len8;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+@@ -22310,16 +23341,38 @@ wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src_over(
+   // TODO: unroll.
+ 
+   while (n >= 1) {
+-    uint64_t d0 = wuffs_base__color_u32__as__color_u64(
+-        wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)));
+-    uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4),
+-        wuffs_base__color_u64__as__color_u32(
+-            wuffs_base__composite_premul_nonpremul_u64_axxx(d0, s0)));
++    // Extract 16-bit color components.
++    uint32_t sa = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 6));
++    uint32_t sr = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 4));
++    uint32_t sg = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 2));
++    uint32_t sb = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 0));
++
++    // Convert from 565 color to 16-bit color.
++    uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
++    uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
++    uint32_t dr = (0x8421 * old_r5) >> 4;
++    uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
++    uint32_t dg = (0x1041 * old_g6) >> 2;
++    uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
++    uint32_t db = (0x8421 * old_b5) >> 4;
++
++    // Calculate the inverse of the src-alpha: how much of the dst to keep.
++    uint32_t ia = 0xFFFF - sa;
++
++    // Composite src (nonpremul) over dst (premul).
++    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
++    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
++    db = ((sb * sa) + (db * ia)) / 0xFFFF;
++
++    // Convert from 16-bit color to 565 color and combine the components.
++    uint32_t new_r5 = 0x1F & (dr >> 11);
++    uint32_t new_g6 = 0x3F & (dg >> 10);
++    uint32_t new_b5 = 0x1F & (db >> 11);
++    uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
++    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
+ 
+     s += 1 * 8;
+-    d += 1 * 4;
++    d += 1 * 2;
+     n -= 1;
+   }
+ 
+@@ -22327,16 +23380,15 @@ wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src_over(
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
++wuffs_private_impl__swizzle_bgr_565__bgra_premul__src(uint8_t* dst_ptr,
++                                                      size_t dst_len,
++                                                      uint8_t* dst_palette_ptr,
++                                                      size_t dst_palette_len,
++                                                      const uint8_t* src_ptr,
++                                                      size_t src_len) {
++  size_t dst_len2 = dst_len / 2;
+   size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
++  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+@@ -22344,13 +23396,12 @@ wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over(
+   // TODO: unroll.
+ 
+   while (n >= 1) {
+-    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
+-    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4), wuffs_base__composite_premul_premul_u32_axxx(d0, s0));
++    wuffs_base__poke_u16le__no_bounds_check(
++        d + (0 * 2), wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
++                         wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
+ 
+     s += 1 * 4;
+-    d += 1 * 4;
++    d += 1 * 2;
+     n -= 1;
+   }
+ 
+@@ -22358,19 +23409,16 @@ wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over(
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_premul__index_bgra_nonpremul__src_over(
++wuffs_private_impl__swizzle_bgr_565__bgra_premul__src_over(
+     uint8_t* dst_ptr,
+     size_t dst_len,
+     uint8_t* dst_palette_ptr,
+     size_t dst_palette_len,
+     const uint8_t* src_ptr,
+     size_t src_len) {
+-  if (dst_palette_len !=
+-      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+-    return 0;
+-  }
+-  size_t dst_len4 = dst_len / 4;
+-  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
++  size_t dst_len2 = dst_len / 2;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+@@ -22378,14 +23426,38 @@ wuffs_base__pixel_swizzler__bgra_premul__index_bgra_nonpremul__src_over(
+   // TODO: unroll.
+ 
+   while (n >= 1) {
+-    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
+-    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
+-                                                          ((size_t)s[0] * 4));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4), wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0));
++    // Extract 16-bit color components.
++    uint32_t sa = 0x101 * ((uint32_t)s[3]);
++    uint32_t sr = 0x101 * ((uint32_t)s[2]);
++    uint32_t sg = 0x101 * ((uint32_t)s[1]);
++    uint32_t sb = 0x101 * ((uint32_t)s[0]);
+ 
+-    s += 1 * 1;
+-    d += 1 * 4;
++    // Convert from 565 color to 16-bit color.
++    uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
++    uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
++    uint32_t dr = (0x8421 * old_r5) >> 4;
++    uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
++    uint32_t dg = (0x1041 * old_g6) >> 2;
++    uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
++    uint32_t db = (0x8421 * old_b5) >> 4;
++
++    // Calculate the inverse of the src-alpha: how much of the dst to keep.
++    uint32_t ia = 0xFFFF - sa;
++
++    // Composite src (premul) over dst (premul).
++    dr = sr + ((dr * ia) / 0xFFFF);
++    dg = sg + ((dg * ia) / 0xFFFF);
++    db = sb + ((db * ia) / 0xFFFF);
++
++    // Convert from 16-bit color to 565 color and combine the components.
++    uint32_t new_r5 = 0x1F & (dr >> 11);
++    uint32_t new_g6 = 0x3F & (dg >> 10);
++    uint32_t new_b5 = 0x1F & (db >> 11);
++    uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
++    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
++
++    s += 1 * 4;
++    d += 1 * 2;
+     n -= 1;
+   }
+ 
+@@ -22393,16 +23465,15 @@ wuffs_base__pixel_swizzler__bgra_premul__index_bgra_nonpremul__src_over(
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
++wuffs_private_impl__swizzle_bgr_565__rgb(uint8_t* dst_ptr,
++                                         size_t dst_len,
++                                         uint8_t* dst_palette_ptr,
++                                         size_t dst_palette_len,
++                                         const uint8_t* src_ptr,
++                                         size_t src_len) {
++  size_t dst_len2 = dst_len / 2;
++  size_t src_len3 = src_len / 3;
++  size_t len = (dst_len2 < src_len3) ? dst_len2 : src_len3;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+@@ -22410,14 +23481,14 @@ wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src(
+   // TODO: unroll.
+ 
+   while (n >= 1) {
+-    uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
+-        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4),
+-        wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(s0));
++    uint32_t r5 = (uint32_t)(s[0] >> 3);
++    uint32_t g6 = (uint32_t)(s[1] >> 2);
++    uint32_t b5 = (uint32_t)(s[2] >> 3);
++    uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0);
++    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
+ 
+-    s += 1 * 4;
+-    d += 1 * 4;
++    s += 1 * 3;
++    d += 1 * 2;
+     n -= 1;
+   }
+ 
+@@ -22425,16 +23496,16 @@ wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src(
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over(
++wuffs_private_impl__swizzle_bgr_565__rgba_nonpremul__src(
+     uint8_t* dst_ptr,
+     size_t dst_len,
+     uint8_t* dst_palette_ptr,
+     size_t dst_palette_len,
+     const uint8_t* src_ptr,
+     size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
++  size_t dst_len2 = dst_len / 2;
+   size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
++  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+@@ -22442,14 +23513,15 @@ wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over(
+   // TODO: unroll.
+ 
+   while (n >= 1) {
+-    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
+-    uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
+-        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4), wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0));
++    wuffs_base__poke_u16le__no_bounds_check(
++        d + (0 * 2),
++        wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
++            wuffs_private_impl__swap_u32_argb_abgr(
++                wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
++                    wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))))));
+ 
+     s += 1 * 4;
+-    d += 1 * 4;
++    d += 1 * 2;
+     n -= 1;
+   }
+ 
+@@ -22457,16 +23529,16 @@ wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over(
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src(
++wuffs_private_impl__swizzle_bgr_565__rgba_nonpremul__src_over(
+     uint8_t* dst_ptr,
+     size_t dst_len,
+     uint8_t* dst_palette_ptr,
+     size_t dst_palette_len,
+     const uint8_t* src_ptr,
+     size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
+-  size_t src_len8 = src_len / 8;
+-  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
++  size_t dst_len2 = dst_len / 2;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+@@ -22474,32 +23546,54 @@ wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src(
+   // TODO: unroll.
+ 
+   while (n >= 1) {
+-    uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4),
+-        wuffs_base__swap_u32_argb_abgr(
+-            wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
+-                s0)));
+-
+-    s += 1 * 8;
+-    d += 1 * 4;
+-    n -= 1;
++    // Extract 16-bit color components.
++    uint32_t sa = 0x101 * ((uint32_t)s[3]);
++    uint32_t sb = 0x101 * ((uint32_t)s[2]);
++    uint32_t sg = 0x101 * ((uint32_t)s[1]);
++    uint32_t sr = 0x101 * ((uint32_t)s[0]);
++
++    // Convert from 565 color to 16-bit color.
++    uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
++    uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
++    uint32_t dr = (0x8421 * old_r5) >> 4;
++    uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
++    uint32_t dg = (0x1041 * old_g6) >> 2;
++    uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
++    uint32_t db = (0x8421 * old_b5) >> 4;
++
++    // Calculate the inverse of the src-alpha: how much of the dst to keep.
++    uint32_t ia = 0xFFFF - sa;
++
++    // Composite src (nonpremul) over dst (premul).
++    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
++    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
++    db = ((sb * sa) + (db * ia)) / 0xFFFF;
++
++    // Convert from 16-bit color to 565 color and combine the components.
++    uint32_t new_r5 = 0x1F & (dr >> 11);
++    uint32_t new_g6 = 0x3F & (dg >> 10);
++    uint32_t new_b5 = 0x1F & (db >> 11);
++    uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
++    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
++
++    s += 1 * 4;
++    d += 1 * 2;
++    n -= 1;
+   }
+ 
+   return len;
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src_over(
+-    uint8_t* dst_ptr,
+-    size_t dst_len,
+-    uint8_t* dst_palette_ptr,
+-    size_t dst_palette_len,
+-    const uint8_t* src_ptr,
+-    size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
+-  size_t src_len8 = src_len / 8;
+-  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
++wuffs_private_impl__swizzle_bgr_565__rgba_premul__src(uint8_t* dst_ptr,
++                                                      size_t dst_len,
++                                                      uint8_t* dst_palette_ptr,
++                                                      size_t dst_palette_len,
++                                                      const uint8_t* src_ptr,
++                                                      size_t src_len) {
++  size_t dst_len2 = dst_len / 2;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+@@ -22507,17 +23601,14 @@ wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src_over(
+   // TODO: unroll.
+ 
+   while (n >= 1) {
+-    uint64_t d0 = wuffs_base__color_u32__as__color_u64(
+-        wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)));
+-    uint64_t s0 = wuffs_base__swap_u64_argb_abgr(
+-        wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4),
+-        wuffs_base__color_u64__as__color_u32(
+-            wuffs_base__composite_premul_nonpremul_u64_axxx(d0, s0)));
++    wuffs_base__poke_u16le__no_bounds_check(
++        d + (0 * 2),
++        wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
++            wuffs_private_impl__swap_u32_argb_abgr(
++                wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))));
+ 
+-    s += 1 * 8;
+-    d += 1 * 4;
++    s += 1 * 4;
++    d += 1 * 2;
+     n -= 1;
+   }
+ 
+@@ -22525,47 +23616,70 @@ wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src_over(
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgra_premul__rgba_premul__src_over(
++wuffs_private_impl__swizzle_bgr_565__rgba_premul__src_over(
+     uint8_t* dst_ptr,
+     size_t dst_len,
+     uint8_t* dst_palette_ptr,
+     size_t dst_palette_len,
+     const uint8_t* src_ptr,
+     size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
++  size_t dst_len2 = dst_len / 2;
+   size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
++  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+ 
++  // TODO: unroll.
++
+   while (n >= 1) {
+-    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
+-    uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
+-        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4), wuffs_base__composite_premul_premul_u32_axxx(d0, s0));
++    // Extract 16-bit color components.
++    uint32_t sa = 0x101 * ((uint32_t)s[3]);
++    uint32_t sb = 0x101 * ((uint32_t)s[2]);
++    uint32_t sg = 0x101 * ((uint32_t)s[1]);
++    uint32_t sr = 0x101 * ((uint32_t)s[0]);
++
++    // Convert from 565 color to 16-bit color.
++    uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
++    uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
++    uint32_t dr = (0x8421 * old_r5) >> 4;
++    uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
++    uint32_t dg = (0x1041 * old_g6) >> 2;
++    uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
++    uint32_t db = (0x8421 * old_b5) >> 4;
++
++    // Calculate the inverse of the src-alpha: how much of the dst to keep.
++    uint32_t ia = 0xFFFF - sa;
++
++    // Composite src (premul) over dst (premul).
++    dr = sr + ((dr * ia) / 0xFFFF);
++    dg = sg + ((dg * ia) / 0xFFFF);
++    db = sb + ((db * ia) / 0xFFFF);
++
++    // Convert from 16-bit color to 565 color and combine the components.
++    uint32_t new_r5 = 0x1F & (dr >> 11);
++    uint32_t new_g6 = 0x3F & (dg >> 10);
++    uint32_t new_b5 = 0x1F & (db >> 11);
++    uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
++    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
+ 
+     s += 1 * 4;
+-    d += 1 * 4;
++    d += 1 * 2;
+     n -= 1;
+   }
+ 
+   return len;
+ }
+ 
+-// --------
+-
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgrw__bgr(uint8_t* dst_ptr,
+-                                      size_t dst_len,
+-                                      uint8_t* dst_palette_ptr,
+-                                      size_t dst_palette_len,
+-                                      const uint8_t* src_ptr,
+-                                      size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
+-  size_t src_len3 = src_len / 3;
+-  size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3;
++wuffs_private_impl__swizzle_bgr_565__y(uint8_t* dst_ptr,
++                                       size_t dst_len,
++                                       uint8_t* dst_palette_ptr,
++                                       size_t dst_palette_len,
++                                       const uint8_t* src_ptr,
++                                       size_t src_len) {
++  size_t dst_len2 = dst_len / 2;
++  size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+@@ -22573,12 +23687,13 @@ wuffs_base__pixel_swizzler__bgrw__bgr(uint8_t* dst_ptr,
+   // TODO: unroll.
+ 
+   while (n >= 1) {
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4),
+-        0xFF000000 | wuffs_base__peek_u24le__no_bounds_check(s + (0 * 3)));
++    uint32_t y5 = (uint32_t)(s[0] >> 3);
++    uint32_t y6 = (uint32_t)(s[0] >> 2);
++    uint32_t rgb_565 = (y5 << 11) | (y6 << 5) | (y5 << 0);
++    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
+ 
+-    s += 1 * 3;
+-    d += 1 * 4;
++    s += 1 * 1;
++    d += 1 * 2;
+     n -= 1;
+   }
+ 
+@@ -22586,15 +23701,15 @@ wuffs_base__pixel_swizzler__bgrw__bgr(uint8_t* dst_ptr,
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgrw__bgr_565(uint8_t* dst_ptr,
+-                                          size_t dst_len,
+-                                          uint8_t* dst_palette_ptr,
+-                                          size_t dst_palette_len,
+-                                          const uint8_t* src_ptr,
+-                                          size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
++wuffs_private_impl__swizzle_bgr_565__y_16be(uint8_t* dst_ptr,
++                                            size_t dst_len,
++                                            uint8_t* dst_palette_ptr,
++                                            size_t dst_palette_len,
++                                            const uint8_t* src_ptr,
++                                            size_t src_len) {
++  size_t dst_len2 = dst_len / 2;
+   size_t src_len2 = src_len / 2;
+-  size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
++  size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+@@ -22602,12 +23717,13 @@ wuffs_base__pixel_swizzler__bgrw__bgr_565(uint8_t* dst_ptr,
+   // TODO: unroll.
+ 
+   while (n >= 1) {
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4), wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
+-                         wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2))));
++    uint32_t y5 = (uint32_t)(s[0] >> 3);
++    uint32_t y6 = (uint32_t)(s[0] >> 2);
++    uint32_t rgb_565 = (y5 << 11) | (y6 << 5) | (y5 << 0);
++    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
+ 
+     s += 1 * 2;
+-    d += 1 * 4;
++    d += 1 * 2;
+     n -= 1;
+   }
+ 
+@@ -22615,15 +23731,15 @@ wuffs_base__pixel_swizzler__bgrw__bgr_565(uint8_t* dst_ptr,
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgrw__bgrx(uint8_t* dst_ptr,
+-                                       size_t dst_len,
+-                                       uint8_t* dst_palette_ptr,
+-                                       size_t dst_palette_len,
+-                                       const uint8_t* src_ptr,
+-                                       size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
++wuffs_private_impl__swizzle_bgr_565__ya_nonpremul__src(uint8_t* dst_ptr,
++                                                       size_t dst_len,
++                                                       uint8_t* dst_palette_ptr,
++                                                       size_t dst_palette_len,
++                                                       const uint8_t* src_ptr,
++                                                       size_t src_len) {
++  size_t dst_len2 = dst_len / 2;
++  size_t src_len2 = src_len / 2;
++  size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+@@ -22631,100 +23747,121 @@ wuffs_base__pixel_swizzler__bgrw__bgrx(uint8_t* dst_ptr,
+   // TODO: unroll.
+ 
+   while (n >= 1) {
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4),
+-        0xFF000000 | wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
++    uint32_t s0 = ((uint32_t)(s[1]) << 24) | ((uint32_t)(s[0]) * 0x010101);
+ 
+-    s += 1 * 4;
+-    d += 1 * 4;
++    wuffs_base__poke_u16le__no_bounds_check(
++        d + (0 * 2),
++        wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
++            wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
++                s0)));
++
++    s += 1 * 2;
++    d += 1 * 2;
+     n -= 1;
+   }
+ 
+   return len;
+ }
+ 
+-// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgrw__rgb__x86_sse42(uint8_t* dst_ptr,
+-                                                 size_t dst_len,
+-                                                 uint8_t* dst_palette_ptr,
+-                                                 size_t dst_palette_len,
+-                                                 const uint8_t* src_ptr,
+-                                                 size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
+-  size_t src_len3 = src_len / 3;
+-  size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3;
++wuffs_private_impl__swizzle_bgr_565__ya_nonpremul__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len2 = dst_len / 2;
++  size_t src_len2 = src_len / 2;
++  size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+ 
+-  __m128i shuffle = _mm_set_epi8(+0x00, +0x09, +0x0A, +0x0B,  //
+-                                 +0x00, +0x06, +0x07, +0x08,  //
+-                                 +0x00, +0x03, +0x04, +0x05,  //
+-                                 +0x00, +0x00, +0x01, +0x02);
+-  __m128i or_ff = _mm_set_epi8(-0x01, +0x00, +0x00, +0x00,  //
+-                               -0x01, +0x00, +0x00, +0x00,  //
+-                               -0x01, +0x00, +0x00, +0x00,  //
+-                               -0x01, +0x00, +0x00, +0x00);
++  // TODO: unroll.
+ 
+-  while (n >= 6) {
+-    __m128i x;
+-    x = _mm_lddqu_si128((const __m128i*)(const void*)s);
+-    x = _mm_shuffle_epi8(x, shuffle);
+-    x = _mm_or_si128(x, or_ff);
+-    _mm_storeu_si128((__m128i*)(void*)d, x);
++  while (n >= 1) {
++    // Extract 16-bit color components.
++    uint32_t sa = 0x101 * ((uint32_t)s[1]);
++    uint32_t sy = 0x101 * ((uint32_t)s[0]);
+ 
+-    s += 4 * 3;
+-    d += 4 * 4;
+-    n -= 4;
+-  }
++    // Convert from 565 color to 16-bit color.
++    uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
++    uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
++    uint32_t dr = (0x8421 * old_r5) >> 4;
++    uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
++    uint32_t dg = (0x1041 * old_g6) >> 2;
++    uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
++    uint32_t db = (0x8421 * old_b5) >> 4;
+ 
+-  while (n >= 1) {
+-    uint8_t b0 = s[0];
+-    uint8_t b1 = s[1];
+-    uint8_t b2 = s[2];
+-    d[0] = b2;
+-    d[1] = b1;
+-    d[2] = b0;
+-    d[3] = 0xFF;
++    // Calculate the inverse of the src-alpha: how much of the dst to keep.
++    uint32_t ia = 0xFFFF - sa;
+ 
+-    s += 1 * 3;
+-    d += 1 * 4;
++    // Composite src (nonpremul) over dst (premul).
++    dr = ((sy * sa) + (dr * ia)) / 0xFFFF;
++    dg = ((sy * sa) + (dg * ia)) / 0xFFFF;
++    db = ((sy * sa) + (db * ia)) / 0xFFFF;
++
++    // Convert from 16-bit color to 565 color and combine the components.
++    uint32_t new_r5 = 0x1F & (dr >> 11);
++    uint32_t new_g6 = 0x3F & (dg >> 10);
++    uint32_t new_b5 = 0x1F & (db >> 11);
++    uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
++    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
++
++    s += 1 * 2;
++    d += 1 * 2;
+     n -= 1;
+   }
+ 
+   return len;
+ }
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgrw__rgb(uint8_t* dst_ptr,
+-                                      size_t dst_len,
+-                                      uint8_t* dst_palette_ptr,
+-                                      size_t dst_palette_len,
+-                                      const uint8_t* src_ptr,
+-                                      size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
+-  size_t src_len3 = src_len / 3;
+-  size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3;
++wuffs_private_impl__swizzle_bgr_565__index__src(uint8_t* dst_ptr,
++                                                size_t dst_len,
++                                                uint8_t* dst_palette_ptr,
++                                                size_t dst_palette_len,
++                                                const uint8_t* src_ptr,
++                                                size_t src_len) {
++  if (dst_palette_len !=
++      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
++    return 0;
++  }
++  size_t dst_len2 = dst_len / 2;
++  size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+ 
++  const size_t loop_unroll_count = 4;
++
++  while (n >= loop_unroll_count) {
++    wuffs_base__poke_u16le__no_bounds_check(
++        d + (0 * 2), wuffs_base__peek_u16le__no_bounds_check(
++                         dst_palette_ptr + ((size_t)s[0] * 4)));
++    wuffs_base__poke_u16le__no_bounds_check(
++        d + (1 * 2), wuffs_base__peek_u16le__no_bounds_check(
++                         dst_palette_ptr + ((size_t)s[1] * 4)));
++    wuffs_base__poke_u16le__no_bounds_check(
++        d + (2 * 2), wuffs_base__peek_u16le__no_bounds_check(
++                         dst_palette_ptr + ((size_t)s[2] * 4)));
++    wuffs_base__poke_u16le__no_bounds_check(
++        d + (3 * 2), wuffs_base__peek_u16le__no_bounds_check(
++                         dst_palette_ptr + ((size_t)s[3] * 4)));
++
++    s += loop_unroll_count * 1;
++    d += loop_unroll_count * 2;
++    n -= loop_unroll_count;
++  }
++
+   while (n >= 1) {
+-    uint8_t b0 = s[0];
+-    uint8_t b1 = s[1];
+-    uint8_t b2 = s[2];
+-    d[0] = b2;
+-    d[1] = b1;
+-    d[2] = b0;
+-    d[3] = 0xFF;
++    wuffs_base__poke_u16le__no_bounds_check(
++        d + (0 * 2), wuffs_base__peek_u16le__no_bounds_check(
++                         dst_palette_ptr + ((size_t)s[0] * 4)));
+ 
+-    s += 1 * 3;
+-    d += 1 * 4;
++    s += 1 * 1;
++    d += 1 * 2;
+     n -= 1;
+   }
+ 
+@@ -22732,15 +23869,19 @@ wuffs_base__pixel_swizzler__bgrw__rgb(uint8_t* dst_ptr,
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgrw__rgbx(uint8_t* dst_ptr,
+-                                       size_t dst_len,
+-                                       uint8_t* dst_palette_ptr,
+-                                       size_t dst_palette_len,
+-                                       const uint8_t* src_ptr,
+-                                       size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
++wuffs_private_impl__swizzle_bgr_565__index_bgra_nonpremul__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  if (dst_palette_len !=
++      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
++    return 0;
++  }
++  size_t dst_len2 = dst_len / 2;
++  size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+@@ -22748,82 +23889,83 @@ wuffs_base__pixel_swizzler__bgrw__rgbx(uint8_t* dst_ptr,
+   // TODO: unroll.
+ 
+   while (n >= 1) {
+-    uint8_t b0 = s[0];
+-    uint8_t b1 = s[1];
+-    uint8_t b2 = s[2];
+-    d[0] = b2;
+-    d[1] = b1;
+-    d[2] = b0;
+-    d[3] = 0xFF;
++    uint32_t d0 = wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
++        wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2)));
++    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
++                                                          ((size_t)s[0] * 4));
++    wuffs_base__poke_u16le__no_bounds_check(
++        d + (0 * 2),
++        wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
++            wuffs_private_impl__composite_premul_nonpremul_u32_axxx(d0, s0)));
+ 
+-    s += 1 * 4;
+-    d += 1 * 4;
++    s += 1 * 1;
++    d += 1 * 2;
+     n -= 1;
+   }
+ 
+   return len;
+ }
+ 
+-// --------
+-
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgrw_4x16le__bgr(uint8_t* dst_ptr,
+-                                             size_t dst_len,
+-                                             uint8_t* dst_palette_ptr,
+-                                             size_t dst_palette_len,
+-                                             const uint8_t* src_ptr,
+-                                             size_t src_len) {
+-  size_t dst_len8 = dst_len / 8;
+-  size_t src_len3 = src_len / 3;
+-  size_t len = (dst_len8 < src_len3) ? dst_len8 : src_len3;
++wuffs_private_impl__swizzle_bgr_565__index_binary_alpha__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  if (dst_palette_len !=
++      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
++    return 0;
++  }
++  size_t dst_len2 = dst_len / 2;
++  size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+ 
++  // TODO: unroll.
++
+   while (n >= 1) {
+-    uint8_t s0 = s[0];
+-    uint8_t s1 = s[1];
+-    uint8_t s2 = s[2];
+-    d[0] = s0;
+-    d[1] = s0;
+-    d[2] = s1;
+-    d[3] = s1;
+-    d[4] = s2;
+-    d[5] = s2;
+-    d[6] = 0xFF;
+-    d[7] = 0xFF;
++    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
++                                                          ((size_t)s[0] * 4));
++    if (s0) {
++      wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)s0);
++    }
+ 
+-    s += 1 * 3;
+-    d += 1 * 8;
++    s += 1 * 1;
++    d += 1 * 2;
+     n -= 1;
+   }
+ 
+   return len;
+ }
+ 
++// --------
++
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgrw_4x16le__bgr_565(uint8_t* dst_ptr,
+-                                                 size_t dst_len,
+-                                                 uint8_t* dst_palette_ptr,
+-                                                 size_t dst_palette_len,
+-                                                 const uint8_t* src_ptr,
+-                                                 size_t src_len) {
+-  size_t dst_len8 = dst_len / 8;
++wuffs_private_impl__swizzle_bgr__bgr_565(uint8_t* dst_ptr,
++                                         size_t dst_len,
++                                         uint8_t* dst_palette_ptr,
++                                         size_t dst_palette_len,
++                                         const uint8_t* src_ptr,
++                                         size_t src_len) {
++  size_t dst_len3 = dst_len / 3;
+   size_t src_len2 = src_len / 2;
+-  size_t len = (dst_len8 < src_len2) ? dst_len8 : src_len2;
++  size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+ 
++  // TODO: unroll.
++
+   while (n >= 1) {
+-    wuffs_base__poke_u64le__no_bounds_check(
+-        d + (0 * 8),
+-        wuffs_base__color_u32__as__color_u64(
+-            wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
+-                wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2)))));
++    uint32_t s0 = wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
++        wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2)));
++    wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
+ 
+     s += 1 * 2;
+-    d += 1 * 8;
++    d += 1 * 3;
+     n -= 1;
+   }
+ 
+@@ -22831,87 +23973,46 @@ wuffs_base__pixel_swizzler__bgrw_4x16le__bgr_565(uint8_t* dst_ptr,
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__bgrw_4x16le__bgrx(uint8_t* dst_ptr,
+-                                              size_t dst_len,
+-                                              uint8_t* dst_palette_ptr,
+-                                              size_t dst_palette_len,
+-                                              const uint8_t* src_ptr,
+-                                              size_t src_len) {
+-  size_t dst_len8 = dst_len / 8;
++wuffs_private_impl__swizzle_bgr__bgra_nonpremul__src(uint8_t* dst_ptr,
++                                                     size_t dst_len,
++                                                     uint8_t* dst_palette_ptr,
++                                                     size_t dst_palette_len,
++                                                     const uint8_t* src_ptr,
++                                                     size_t src_len) {
++  size_t dst_len3 = dst_len / 3;
+   size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
++  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+ 
+-  while (n >= 1) {
+-    uint8_t s0 = s[0];
+-    uint8_t s1 = s[1];
+-    uint8_t s2 = s[2];
+-    d[0] = s0;
+-    d[1] = s0;
+-    d[2] = s1;
+-    d[3] = s1;
+-    d[4] = s2;
+-    d[5] = s2;
+-    d[6] = 0xFF;
+-    d[7] = 0xFF;
+-
+-    s += 1 * 4;
+-    d += 1 * 8;
+-    n -= 1;
+-  }
+-
+-  return len;
+-}
+-
+-static uint64_t  //
+-wuffs_base__pixel_swizzler__bgrw_4x16le__rgb(uint8_t* dst_ptr,
+-                                             size_t dst_len,
+-                                             uint8_t* dst_palette_ptr,
+-                                             size_t dst_palette_len,
+-                                             const uint8_t* src_ptr,
+-                                             size_t src_len) {
+-  size_t dst_len8 = dst_len / 8;
+-  size_t src_len3 = src_len / 3;
+-  size_t len = (dst_len8 < src_len3) ? dst_len8 : src_len3;
+-  uint8_t* d = dst_ptr;
+-  const uint8_t* s = src_ptr;
+-  size_t n = len;
++  // TODO: unroll.
+ 
+   while (n >= 1) {
+-    uint8_t s0 = s[0];
+-    uint8_t s1 = s[1];
+-    uint8_t s2 = s[2];
+-    d[0] = s2;
+-    d[1] = s2;
+-    d[2] = s1;
+-    d[3] = s1;
+-    d[4] = s0;
+-    d[5] = s0;
+-    d[6] = 0xFF;
+-    d[7] = 0xFF;
++    uint32_t s0 =
++        wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
++            wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
++    wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
+ 
+-    s += 1 * 3;
+-    d += 1 * 8;
++    s += 1 * 4;
++    d += 1 * 3;
+     n -= 1;
+   }
+ 
+   return len;
+ }
+ 
+-// --------
+-
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__rgb__bgr_565(uint8_t* dst_ptr,
+-                                         size_t dst_len,
+-                                         uint8_t* dst_palette_ptr,
+-                                         size_t dst_palette_len,
+-                                         const uint8_t* src_ptr,
+-                                         size_t src_len) {
++wuffs_private_impl__swizzle_bgr__bgra_nonpremul_4x16le__src(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
+   size_t dst_len3 = dst_len / 3;
+-  size_t src_len2 = src_len / 2;
+-  size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2;
++  size_t src_len8 = src_len / 8;
++  size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+@@ -22919,13 +24020,12 @@ wuffs_base__pixel_swizzler__rgb__bgr_565(uint8_t* dst_ptr,
+   // TODO: unroll.
+ 
+   while (n >= 1) {
+-    wuffs_base__poke_u24le__no_bounds_check(
+-        d + (0 * 3),
+-        wuffs_base__swap_u32_argb_abgr(
+-            wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
+-                wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2)))));
++    uint32_t s0 =
++        wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
++            wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)));
++    wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
+ 
+-    s += 1 * 2;
++    s += 1 * 8;
+     d += 1 * 3;
+     n -= 1;
+   }
+@@ -22933,154 +24033,200 @@ wuffs_base__pixel_swizzler__rgb__bgr_565(uint8_t* dst_ptr,
+   return len;
+ }
+ 
+-// --------
+-
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src(
++wuffs_private_impl__swizzle_bgr__bgra_nonpremul__src_over(
+     uint8_t* dst_ptr,
+     size_t dst_len,
+     uint8_t* dst_palette_ptr,
+     size_t dst_palette_len,
+     const uint8_t* src_ptr,
+     size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
+-  size_t src_len8 = src_len / 8;
+-  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
++  size_t dst_len3 = dst_len / 3;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+-
+   size_t n = len;
++
++  // TODO: unroll.
++
+   while (n >= 1) {
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4), wuffs_base__color_u64__as__color_u32__swap_u32_argb_abgr(
+-                         wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8))));
++    // Extract 16-bit color components.
++    uint32_t dr = 0x101 * ((uint32_t)d[2]);
++    uint32_t dg = 0x101 * ((uint32_t)d[1]);
++    uint32_t db = 0x101 * ((uint32_t)d[0]);
++    uint32_t sa = 0x101 * ((uint32_t)s[3]);
++    uint32_t sr = 0x101 * ((uint32_t)s[2]);
++    uint32_t sg = 0x101 * ((uint32_t)s[1]);
++    uint32_t sb = 0x101 * ((uint32_t)s[0]);
+ 
+-    s += 1 * 8;
+-    d += 1 * 4;
++    // Calculate the inverse of the src-alpha: how much of the dst to keep.
++    uint32_t ia = 0xFFFF - sa;
++
++    // Composite src (nonpremul) over dst (premul).
++    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
++    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
++    db = ((sb * sa) + (db * ia)) / 0xFFFF;
++
++    // Convert from 16-bit color to 8-bit color.
++    d[0] = (uint8_t)(db >> 8);
++    d[1] = (uint8_t)(dg >> 8);
++    d[2] = (uint8_t)(dr >> 8);
++
++    s += 1 * 4;
++    d += 1 * 3;
+     n -= 1;
+   }
++
+   return len;
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src_over(
++wuffs_private_impl__swizzle_bgr__bgra_nonpremul_4x16le__src_over(
+     uint8_t* dst_ptr,
+     size_t dst_len,
+     uint8_t* dst_palette_ptr,
+     size_t dst_palette_len,
+     const uint8_t* src_ptr,
+     size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
++  size_t dst_len3 = dst_len / 3;
+   size_t src_len8 = src_len / 8;
+-  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
++  size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+ 
++  // TODO: unroll.
++
+   while (n >= 1) {
+-    uint64_t d0 = wuffs_base__color_u32__as__color_u64(
+-        wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)));
+-    uint64_t s0 = wuffs_base__swap_u64_argb_abgr(
+-        wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4),
+-        wuffs_base__color_u64__as__color_u32(
+-            wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0)));
++    // Extract 16-bit color components.
++    uint32_t dr = 0x101 * ((uint32_t)d[2]);
++    uint32_t dg = 0x101 * ((uint32_t)d[1]);
++    uint32_t db = 0x101 * ((uint32_t)d[0]);
++    uint32_t sa = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 6));
++    uint32_t sr = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 4));
++    uint32_t sg = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 2));
++    uint32_t sb = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 0));
++
++    // Calculate the inverse of the src-alpha: how much of the dst to keep.
++    uint32_t ia = 0xFFFF - sa;
++
++    // Composite src (nonpremul) over dst (premul).
++    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
++    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
++    db = ((sb * sa) + (db * ia)) / 0xFFFF;
++
++    // Convert from 16-bit color to 8-bit color.
++    d[0] = (uint8_t)(db >> 8);
++    d[1] = (uint8_t)(dg >> 8);
++    d[2] = (uint8_t)(dr >> 8);
+ 
+     s += 1 * 8;
+-    d += 1 * 4;
++    d += 1 * 3;
+     n -= 1;
+   }
+ 
+   return len;
+ }
+ 
+-// --------
+-
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__rgbw__bgr_565(uint8_t* dst_ptr,
+-                                          size_t dst_len,
+-                                          uint8_t* dst_palette_ptr,
+-                                          size_t dst_palette_len,
+-                                          const uint8_t* src_ptr,
+-                                          size_t src_len) {
+-  size_t dst_len4 = dst_len / 4;
+-  size_t src_len2 = src_len / 2;
+-  size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
++wuffs_private_impl__swizzle_bgr__bgra_premul__src(uint8_t* dst_ptr,
++                                                  size_t dst_len,
++                                                  uint8_t* dst_palette_ptr,
++                                                  size_t dst_palette_len,
++                                                  const uint8_t* src_ptr,
++                                                  size_t src_len) {
++  size_t dst_len3 = dst_len / 3;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+ 
+-  // TODO: unroll.
+-
+   while (n >= 1) {
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4),
+-        wuffs_base__swap_u32_argb_abgr(
+-            wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
+-                wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2)))));
++    uint8_t s0 = s[0];
++    uint8_t s1 = s[1];
++    uint8_t s2 = s[2];
++    d[0] = s0;
++    d[1] = s1;
++    d[2] = s2;
+ 
+-    s += 1 * 2;
+-    d += 1 * 4;
++    s += 1 * 4;
++    d += 1 * 3;
+     n -= 1;
+   }
+ 
+   return len;
+ }
+ 
+-// --------
+-
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__xxx__index__src(uint8_t* dst_ptr,
+-                                            size_t dst_len,
+-                                            uint8_t* dst_palette_ptr,
+-                                            size_t dst_palette_len,
+-                                            const uint8_t* src_ptr,
+-                                            size_t src_len) {
+-  if (dst_palette_len !=
+-      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+-    return 0;
+-  }
++wuffs_private_impl__swizzle_bgr__bgra_premul__src_over(uint8_t* dst_ptr,
++                                                       size_t dst_len,
++                                                       uint8_t* dst_palette_ptr,
++                                                       size_t dst_palette_len,
++                                                       const uint8_t* src_ptr,
++                                                       size_t src_len) {
+   size_t dst_len3 = dst_len / 3;
+-  size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+ 
+-  const size_t loop_unroll_count = 4;
++  while (n >= 1) {
++    // Extract 16-bit color components.
++    uint32_t dr = 0x101 * ((uint32_t)d[2]);
++    uint32_t dg = 0x101 * ((uint32_t)d[1]);
++    uint32_t db = 0x101 * ((uint32_t)d[0]);
++    uint32_t sa = 0x101 * ((uint32_t)s[3]);
++    uint32_t sr = 0x101 * ((uint32_t)s[2]);
++    uint32_t sg = 0x101 * ((uint32_t)s[1]);
++    uint32_t sb = 0x101 * ((uint32_t)s[0]);
+ 
+-  // The comparison in the while condition is ">", not ">=", because with
+-  // ">=", the last 4-byte store could write past the end of the dst slice.
+-  //
+-  // Each 4-byte store writes one too many bytes, but a subsequent store
+-  // will overwrite that with the correct byte. There is always another
+-  // store, whether a 4-byte store in this loop or a 1-byte store in the
+-  // next loop.
+-  while (n > loop_unroll_count) {
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 3), wuffs_base__peek_u32le__no_bounds_check(
+-                         dst_palette_ptr + ((size_t)s[0] * 4)));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (1 * 3), wuffs_base__peek_u32le__no_bounds_check(
+-                         dst_palette_ptr + ((size_t)s[1] * 4)));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (2 * 3), wuffs_base__peek_u32le__no_bounds_check(
+-                         dst_palette_ptr + ((size_t)s[2] * 4)));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (3 * 3), wuffs_base__peek_u32le__no_bounds_check(
+-                         dst_palette_ptr + ((size_t)s[3] * 4)));
++    // Calculate the inverse of the src-alpha: how much of the dst to keep.
++    uint32_t ia = 0xFFFF - sa;
+ 
+-    s += loop_unroll_count * 1;
+-    d += loop_unroll_count * 3;
+-    n -= loop_unroll_count;
++    // Composite src (premul) over dst (premul).
++    dr = sr + ((dr * ia) / 0xFFFF);
++    dg = sg + ((dg * ia) / 0xFFFF);
++    db = sb + ((db * ia) / 0xFFFF);
++
++    // Convert from 16-bit color to 8-bit color.
++    d[0] = (uint8_t)(db >> 8);
++    d[1] = (uint8_t)(dg >> 8);
++    d[2] = (uint8_t)(dr >> 8);
++
++    s += 1 * 4;
++    d += 1 * 3;
++    n -= 1;
+   }
+ 
++  return len;
++}
++
++static uint64_t  //
++wuffs_private_impl__swizzle_bgr__rgba_nonpremul__src(uint8_t* dst_ptr,
++                                                     size_t dst_len,
++                                                     uint8_t* dst_palette_ptr,
++                                                     size_t dst_palette_len,
++                                                     const uint8_t* src_ptr,
++                                                     size_t src_len) {
++  size_t dst_len3 = dst_len / 3;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
++
++  // TODO: unroll.
++
+   while (n >= 1) {
+-    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
+-                                                          ((size_t)s[0] * 4));
++    uint32_t s0 = wuffs_private_impl__swap_u32_argb_abgr(
++        wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
++            wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
+     wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
+ 
+-    s += 1 * 1;
++    s += 1 * 4;
+     d += 1 * 3;
+     n -= 1;
+   }
+@@ -23089,19 +24235,16 @@ wuffs_base__pixel_swizzler__xxx__index__src(uint8_t* dst_ptr,
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__xxx__index_bgra_nonpremul__src_over(
++wuffs_private_impl__swizzle_bgr__rgba_nonpremul_4x16le__src(
+     uint8_t* dst_ptr,
+     size_t dst_len,
+     uint8_t* dst_palette_ptr,
+     size_t dst_palette_len,
+     const uint8_t* src_ptr,
+     size_t src_len) {
+-  if (dst_palette_len !=
+-      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+-    return 0;
+-  }
+   size_t dst_len3 = dst_len / 3;
+-  size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
++  size_t src_len8 = src_len / 8;
++  size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+@@ -23109,14 +24252,12 @@ wuffs_base__pixel_swizzler__xxx__index_bgra_nonpremul__src_over(
+   // TODO: unroll.
+ 
+   while (n >= 1) {
+-    uint32_t d0 =
+-        wuffs_base__peek_u24le__no_bounds_check(d + (0 * 3)) | 0xFF000000;
+-    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
+-                                                          ((size_t)s[0] * 4));
+-    wuffs_base__poke_u24le__no_bounds_check(
+-        d + (0 * 3), wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0));
++    uint32_t s0 = wuffs_private_impl__swap_u32_argb_abgr(
++        wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
++            wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8))));
++    wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
+ 
+-    s += 1 * 1;
++    s += 1 * 8;
+     d += 1 * 3;
+     n -= 1;
+   }
+@@ -23125,60 +24266,46 @@ wuffs_base__pixel_swizzler__xxx__index_bgra_nonpremul__src_over(
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over(
++wuffs_private_impl__swizzle_bgr__rgba_nonpremul__src_over(
+     uint8_t* dst_ptr,
+     size_t dst_len,
+     uint8_t* dst_palette_ptr,
+     size_t dst_palette_len,
+     const uint8_t* src_ptr,
+     size_t src_len) {
+-  if (dst_palette_len !=
+-      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+-    return 0;
+-  }
+   size_t dst_len3 = dst_len / 3;
+-  size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+ 
+-  const size_t loop_unroll_count = 4;
++  // TODO: unroll.
+ 
+-  while (n >= loop_unroll_count) {
+-    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
+-                                                          ((size_t)s[0] * 4));
+-    if (s0) {
+-      wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
+-    }
+-    uint32_t s1 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
+-                                                          ((size_t)s[1] * 4));
+-    if (s1) {
+-      wuffs_base__poke_u24le__no_bounds_check(d + (1 * 3), s1);
+-    }
+-    uint32_t s2 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
+-                                                          ((size_t)s[2] * 4));
+-    if (s2) {
+-      wuffs_base__poke_u24le__no_bounds_check(d + (2 * 3), s2);
+-    }
+-    uint32_t s3 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
+-                                                          ((size_t)s[3] * 4));
+-    if (s3) {
+-      wuffs_base__poke_u24le__no_bounds_check(d + (3 * 3), s3);
+-    }
++  while (n >= 1) {
++    // Extract 16-bit color components.
++    uint32_t dr = 0x101 * ((uint32_t)d[2]);
++    uint32_t dg = 0x101 * ((uint32_t)d[1]);
++    uint32_t db = 0x101 * ((uint32_t)d[0]);
++    uint32_t sa = 0x101 * ((uint32_t)s[3]);
++    uint32_t sb = 0x101 * ((uint32_t)s[2]);
++    uint32_t sg = 0x101 * ((uint32_t)s[1]);
++    uint32_t sr = 0x101 * ((uint32_t)s[0]);
+ 
+-    s += loop_unroll_count * 1;
+-    d += loop_unroll_count * 3;
+-    n -= loop_unroll_count;
+-  }
++    // Calculate the inverse of the src-alpha: how much of the dst to keep.
++    uint32_t ia = 0xFFFF - sa;
+ 
+-  while (n >= 1) {
+-    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
+-                                                          ((size_t)s[0] * 4));
+-    if (s0) {
+-      wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
+-    }
++    // Composite src (nonpremul) over dst (premul).
++    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
++    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
++    db = ((sb * sa) + (db * ia)) / 0xFFFF;
+ 
+-    s += 1 * 1;
++    // Convert from 16-bit color to 8-bit color.
++    d[0] = (uint8_t)(db >> 8);
++    d[1] = (uint8_t)(dg >> 8);
++    d[2] = (uint8_t)(dr >> 8);
++
++    s += 1 * 4;
+     d += 1 * 3;
+     n -= 1;
+   }
+@@ -23187,15 +24314,16 @@ wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over(
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__xxx__xxxx(uint8_t* dst_ptr,
+-                                      size_t dst_len,
+-                                      uint8_t* dst_palette_ptr,
+-                                      size_t dst_palette_len,
+-                                      const uint8_t* src_ptr,
+-                                      size_t src_len) {
++wuffs_private_impl__swizzle_bgr__rgba_nonpremul_4x16le__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
+   size_t dst_len3 = dst_len / 3;
+-  size_t src_len4 = src_len / 4;
+-  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
++  size_t src_len8 = src_len / 8;
++  size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+@@ -23203,10 +24331,29 @@ wuffs_base__pixel_swizzler__xxx__xxxx(uint8_t* dst_ptr,
+   // TODO: unroll.
+ 
+   while (n >= 1) {
+-    wuffs_base__poke_u24le__no_bounds_check(
+-        d + (0 * 3), wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
++    // Extract 16-bit color components.
++    uint32_t dr = 0x101 * ((uint32_t)d[2]);
++    uint32_t dg = 0x101 * ((uint32_t)d[1]);
++    uint32_t db = 0x101 * ((uint32_t)d[0]);
++    uint32_t sa = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 6));
++    uint32_t sb = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 4));
++    uint32_t sg = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 2));
++    uint32_t sr = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 0));
+ 
+-    s += 1 * 4;
++    // Calculate the inverse of the src-alpha: how much of the dst to keep.
++    uint32_t ia = 0xFFFF - sa;
++
++    // Composite src (nonpremul) over dst (premul).
++    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
++    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
++    db = ((sb * sa) + (db * ia)) / 0xFFFF;
++
++    // Convert from 16-bit color to 8-bit color.
++    d[0] = (uint8_t)(db >> 8);
++    d[1] = (uint8_t)(dg >> 8);
++    d[2] = (uint8_t)(dr >> 8);
++
++    s += 1 * 8;
+     d += 1 * 3;
+     n -= 1;
+   }
+@@ -23215,27 +24362,28 @@ wuffs_base__pixel_swizzler__xxx__xxxx(uint8_t* dst_ptr,
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__xxx__y(uint8_t* dst_ptr,
+-                                   size_t dst_len,
+-                                   uint8_t* dst_palette_ptr,
+-                                   size_t dst_palette_len,
+-                                   const uint8_t* src_ptr,
+-                                   size_t src_len) {
++wuffs_private_impl__swizzle_bgr__rgba_premul__src(uint8_t* dst_ptr,
++                                                  size_t dst_len,
++                                                  uint8_t* dst_palette_ptr,
++                                                  size_t dst_palette_len,
++                                                  const uint8_t* src_ptr,
++                                                  size_t src_len) {
+   size_t dst_len3 = dst_len / 3;
+-  size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+ 
+-  // TODO: unroll.
+-
+   while (n >= 1) {
+     uint8_t s0 = s[0];
+-    d[0] = s0;
+-    d[1] = s0;
++    uint8_t s1 = s[1];
++    uint8_t s2 = s[2];
++    d[0] = s2;
++    d[1] = s1;
+     d[2] = s0;
+ 
+-    s += 1 * 1;
++    s += 1 * 4;
+     d += 1 * 3;
+     n -= 1;
+   }
+@@ -23244,28 +24392,43 @@ wuffs_base__pixel_swizzler__xxx__y(uint8_t* dst_ptr,
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__xxx__y_16be(uint8_t* dst_ptr,
+-                                        size_t dst_len,
+-                                        uint8_t* dst_palette_ptr,
+-                                        size_t dst_palette_len,
+-                                        const uint8_t* src_ptr,
+-                                        size_t src_len) {
++wuffs_private_impl__swizzle_bgr__rgba_premul__src_over(uint8_t* dst_ptr,
++                                                       size_t dst_len,
++                                                       uint8_t* dst_palette_ptr,
++                                                       size_t dst_palette_len,
++                                                       const uint8_t* src_ptr,
++                                                       size_t src_len) {
+   size_t dst_len3 = dst_len / 3;
+-  size_t src_len2 = src_len / 2;
+-  size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+ 
+-  // TODO: unroll.
+-
+   while (n >= 1) {
+-    uint8_t s0 = s[0];
+-    d[0] = s0;
+-    d[1] = s0;
+-    d[2] = s0;
++    // Extract 16-bit color components.
++    uint32_t dr = 0x101 * ((uint32_t)d[2]);
++    uint32_t dg = 0x101 * ((uint32_t)d[1]);
++    uint32_t db = 0x101 * ((uint32_t)d[0]);
++    uint32_t sa = 0x101 * ((uint32_t)s[3]);
++    uint32_t sb = 0x101 * ((uint32_t)s[2]);
++    uint32_t sg = 0x101 * ((uint32_t)s[1]);
++    uint32_t sr = 0x101 * ((uint32_t)s[0]);
+ 
+-    s += 1 * 2;
++    // Calculate the inverse of the src-alpha: how much of the dst to keep.
++    uint32_t ia = 0xFFFF - sa;
++
++    // Composite src (premul) over dst (premul).
++    dr = sr + ((dr * ia) / 0xFFFF);
++    dg = sg + ((dg * ia) / 0xFFFF);
++    db = sb + ((db * ia) / 0xFFFF);
++
++    // Convert from 16-bit color to 8-bit color.
++    d[0] = (uint8_t)(db >> 8);
++    d[1] = (uint8_t)(dg >> 8);
++    d[2] = (uint8_t)(dr >> 8);
++
++    s += 1 * 4;
+     d += 1 * 3;
+     n -= 1;
+   }
+@@ -23273,114 +24436,63 @@ wuffs_base__pixel_swizzler__xxx__y_16be(uint8_t* dst_ptr,
+   return len;
+ }
+ 
+-// --------
+-
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__xxxx__index__src(uint8_t* dst_ptr,
+-                                             size_t dst_len,
+-                                             uint8_t* dst_palette_ptr,
+-                                             size_t dst_palette_len,
+-                                             const uint8_t* src_ptr,
+-                                             size_t src_len) {
+-  if (dst_palette_len !=
+-      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+-    return 0;
+-  }
+-  size_t dst_len4 = dst_len / 4;
+-  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
++wuffs_private_impl__swizzle_bgr__rgbx(uint8_t* dst_ptr,
++                                      size_t dst_len,
++                                      uint8_t* dst_palette_ptr,
++                                      size_t dst_palette_len,
++                                      const uint8_t* src_ptr,
++                                      size_t src_len) {
++  size_t dst_len3 = dst_len / 3;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+ 
+-  const size_t loop_unroll_count = 4;
+-
+-  while (n >= loop_unroll_count) {
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4), wuffs_base__peek_u32le__no_bounds_check(
+-                         dst_palette_ptr + ((size_t)s[0] * 4)));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (1 * 4), wuffs_base__peek_u32le__no_bounds_check(
+-                         dst_palette_ptr + ((size_t)s[1] * 4)));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (2 * 4), wuffs_base__peek_u32le__no_bounds_check(
+-                         dst_palette_ptr + ((size_t)s[2] * 4)));
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (3 * 4), wuffs_base__peek_u32le__no_bounds_check(
+-                         dst_palette_ptr + ((size_t)s[3] * 4)));
+-
+-    s += loop_unroll_count * 1;
+-    d += loop_unroll_count * 4;
+-    n -= loop_unroll_count;
+-  }
++  // TODO: unroll.
+ 
+   while (n >= 1) {
+-    wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4), wuffs_base__peek_u32le__no_bounds_check(
+-                         dst_palette_ptr + ((size_t)s[0] * 4)));
++    uint8_t b0 = s[0];
++    uint8_t b1 = s[1];
++    uint8_t b2 = s[2];
++    d[0] = b2;
++    d[1] = b1;
++    d[2] = b0;
+ 
+-    s += 1 * 1;
+-    d += 1 * 4;
++    s += 1 * 4;
++    d += 1 * 3;
+     n -= 1;
+   }
+ 
+   return len;
+ }
+ 
++// --------
++
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over(
++wuffs_private_impl__swizzle_bgra_nonpremul__bgra_nonpremul__src_over(
+     uint8_t* dst_ptr,
+     size_t dst_len,
+     uint8_t* dst_palette_ptr,
+     size_t dst_palette_len,
+     const uint8_t* src_ptr,
+     size_t src_len) {
+-  if (dst_palette_len !=
+-      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+-    return 0;
+-  }
+   size_t dst_len4 = dst_len / 4;
+-  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+ 
+-  const size_t loop_unroll_count = 4;
+-
+-  while (n >= loop_unroll_count) {
+-    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
+-                                                          ((size_t)s[0] * 4));
+-    if (s0) {
+-      wuffs_base__poke_u32le__no_bounds_check(d + (0 * 4), s0);
+-    }
+-    uint32_t s1 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
+-                                                          ((size_t)s[1] * 4));
+-    if (s1) {
+-      wuffs_base__poke_u32le__no_bounds_check(d + (1 * 4), s1);
+-    }
+-    uint32_t s2 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
+-                                                          ((size_t)s[2] * 4));
+-    if (s2) {
+-      wuffs_base__poke_u32le__no_bounds_check(d + (2 * 4), s2);
+-    }
+-    uint32_t s3 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
+-                                                          ((size_t)s[3] * 4));
+-    if (s3) {
+-      wuffs_base__poke_u32le__no_bounds_check(d + (3 * 4), s3);
+-    }
+-
+-    s += loop_unroll_count * 1;
+-    d += loop_unroll_count * 4;
+-    n -= loop_unroll_count;
+-  }
+-
+   while (n >= 1) {
+-    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
+-                                                          ((size_t)s[0] * 4));
+-    if (s0) {
+-      wuffs_base__poke_u32le__no_bounds_check(d + (0 * 4), s0);
+-    }
++    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
++    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        wuffs_private_impl__composite_nonpremul_nonpremul_u32_axxx(d0, s0));
+ 
+-    s += 1 * 1;
++    s += 1 * 4;
+     d += 1 * 4;
+     n -= 1;
+   }
+@@ -23388,75 +24500,88 @@ wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over(
+   return len;
+ }
+ 
+-// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__xxxx__y__x86_sse42(uint8_t* dst_ptr,
+-                                               size_t dst_len,
+-                                               uint8_t* dst_palette_ptr,
+-                                               size_t dst_palette_len,
+-                                               const uint8_t* src_ptr,
+-                                               size_t src_len) {
++wuffs_private_impl__swizzle_bgra_nonpremul__bgra_nonpremul_4x16le__src(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
+   size_t dst_len4 = dst_len / 4;
+-  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
++  size_t src_len8 = src_len / 8;
++  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
++
+   size_t n = len;
++  while (n >= 1) {
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4), wuffs_base__color_u64__as__color_u32(
++                         wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8))));
+ 
+-  __m128i shuffle = _mm_set_epi8(+0x03, +0x03, +0x03, +0x03,  //
+-                                 +0x02, +0x02, +0x02, +0x02,  //
+-                                 +0x01, +0x01, +0x01, +0x01,  //
+-                                 +0x00, +0x00, +0x00, +0x00);
+-  __m128i or_ff = _mm_set_epi8(-0x01, +0x00, +0x00, +0x00,  //
+-                               -0x01, +0x00, +0x00, +0x00,  //
+-                               -0x01, +0x00, +0x00, +0x00,  //
+-                               -0x01, +0x00, +0x00, +0x00);
+-
+-  while (n >= 4) {
+-    __m128i x;
+-    x = _mm_cvtsi32_si128((int)(wuffs_base__peek_u32le__no_bounds_check(s)));
+-    x = _mm_shuffle_epi8(x, shuffle);
+-    x = _mm_or_si128(x, or_ff);
+-    _mm_storeu_si128((__m128i*)(void*)d, x);
+-
+-    s += 4 * 1;
+-    d += 4 * 4;
+-    n -= 4;
++    s += 1 * 8;
++    d += 1 * 4;
++    n -= 1;
+   }
++  return len;
++}
++
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_nonpremul__bgra_nonpremul_4x16le__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len8 = src_len / 8;
++  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+   while (n >= 1) {
++    uint64_t d0 = wuffs_base__color_u32__as__color_u64(
++        wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)));
++    uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
+     wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0]));
++        d + (0 * 4),
++        wuffs_base__color_u64__as__color_u32(
++            wuffs_private_impl__composite_nonpremul_nonpremul_u64_axxx(d0,
++                                                                       s0)));
+ 
+-    s += 1 * 1;
++    s += 1 * 8;
+     d += 1 * 4;
+     n -= 1;
+   }
+ 
+   return len;
+ }
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__xxxx__y(uint8_t* dst_ptr,
+-                                    size_t dst_len,
+-                                    uint8_t* dst_palette_ptr,
+-                                    size_t dst_palette_len,
+-                                    const uint8_t* src_ptr,
+-                                    size_t src_len) {
++wuffs_private_impl__swizzle_bgra_nonpremul__bgra_premul__src(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
+   size_t dst_len4 = dst_len / 4;
+-  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+ 
+   while (n >= 1) {
++    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
+     wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0]));
++        d + (0 * 4),
++        wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(s0));
+ 
+-    s += 1 * 1;
++    s += 1 * 4;
+     d += 1 * 4;
+     n -= 1;
+   }
+@@ -23465,24 +24590,28 @@ wuffs_base__pixel_swizzler__xxxx__y(uint8_t* dst_ptr,
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__xxxx__y_16be(uint8_t* dst_ptr,
+-                                         size_t dst_len,
+-                                         uint8_t* dst_palette_ptr,
+-                                         size_t dst_palette_len,
+-                                         const uint8_t* src_ptr,
+-                                         size_t src_len) {
++wuffs_private_impl__swizzle_bgra_nonpremul__bgra_premul__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
+   size_t dst_len4 = dst_len / 4;
+-  size_t src_len2 = src_len / 2;
+-  size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+ 
+   while (n >= 1) {
++    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
++    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
+     wuffs_base__poke_u32le__no_bounds_check(
+-        d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0]));
++        d + (0 * 4),
++        wuffs_private_impl__composite_nonpremul_premul_u32_axxx(d0, s0));
+ 
+-    s += 1 * 2;
++    s += 1 * 4;
+     d += 1 * 4;
+     n -= 1;
+   }
+@@ -23490,33 +24619,36 @@ wuffs_base__pixel_swizzler__xxxx__y_16be(uint8_t* dst_ptr,
+   return len;
+ }
+ 
+-// --------
+-
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__xxxxxxxx__index__src(uint8_t* dst_ptr,
+-                                                 size_t dst_len,
+-                                                 uint8_t* dst_palette_ptr,
+-                                                 size_t dst_palette_len,
+-                                                 const uint8_t* src_ptr,
+-                                                 size_t src_len) {
++wuffs_private_impl__swizzle_bgra_nonpremul__index_bgra_nonpremul__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
+   if (dst_palette_len !=
+       WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+     return 0;
+   }
+-  size_t dst_len8 = dst_len / 8;
+-  size_t len = (dst_len8 < src_len) ? dst_len8 : src_len;
++  size_t dst_len4 = dst_len / 4;
++  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+ 
++  // TODO: unroll.
++
+   while (n >= 1) {
+-    wuffs_base__poke_u64le__no_bounds_check(
+-        d + (0 * 8), wuffs_base__color_u32__as__color_u64(
+-                         wuffs_base__peek_u32le__no_bounds_check(
+-                             dst_palette_ptr + ((size_t)s[0] * 4))));
++    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
++    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
++                                                          ((size_t)s[0] * 4));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        wuffs_private_impl__composite_nonpremul_nonpremul_u32_axxx(d0, s0));
+ 
+     s += 1 * 1;
+-    d += 1 * 8;
++    d += 1 * 4;
+     n -= 1;
+   }
+ 
+@@ -23524,33 +24656,30 @@ wuffs_base__pixel_swizzler__xxxxxxxx__index__src(uint8_t* dst_ptr,
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__xxxxxxxx__index_binary_alpha__src_over(
++wuffs_private_impl__swizzle_bgra_nonpremul__rgba_nonpremul__src_over(
+     uint8_t* dst_ptr,
+     size_t dst_len,
+     uint8_t* dst_palette_ptr,
+     size_t dst_palette_len,
+     const uint8_t* src_ptr,
+     size_t src_len) {
+-  if (dst_palette_len !=
+-      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+-    return 0;
+-  }
+-  size_t dst_len8 = dst_len / 8;
+-  size_t len = (dst_len8 < src_len) ? dst_len8 : src_len;
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+ 
+   while (n >= 1) {
+-    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
+-                                                          ((size_t)s[0] * 4));
+-    if (s0) {
+-      wuffs_base__poke_u64le__no_bounds_check(
+-          d + (0 * 8), wuffs_base__color_u32__as__color_u64(s0));
+-    }
++    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
++    uint32_t s0 = wuffs_private_impl__swap_u32_argb_abgr(
++        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        wuffs_private_impl__composite_nonpremul_nonpremul_u32_axxx(d0, s0));
+ 
+-    s += 1 * 1;
+-    d += 1 * 8;
++    s += 1 * 4;
++    d += 1 * 4;
+     n -= 1;
+   }
+ 
+@@ -23558,24 +24687,29 @@ wuffs_base__pixel_swizzler__xxxxxxxx__index_binary_alpha__src_over(
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__xxxxxxxx__y(uint8_t* dst_ptr,
+-                                        size_t dst_len,
+-                                        uint8_t* dst_palette_ptr,
+-                                        size_t dst_palette_len,
+-                                        const uint8_t* src_ptr,
+-                                        size_t src_len) {
+-  size_t dst_len8 = dst_len / 8;
+-  size_t len = (dst_len8 < src_len) ? dst_len8 : src_len;
++wuffs_private_impl__swizzle_bgra_nonpremul__rgba_premul__src(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+ 
+   while (n >= 1) {
+-    wuffs_base__poke_u64le__no_bounds_check(
+-        d + (0 * 8), 0xFFFF000000000000 | (0x010101010101 * (uint64_t)s[0]));
++    uint32_t s0 = wuffs_private_impl__swap_u32_argb_abgr(
++        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(s0));
+ 
+-    s += 1 * 1;
+-    d += 1 * 8;
++    s += 1 * 4;
++    d += 1 * 4;
+     n -= 1;
+   }
+ 
+@@ -23583,53 +24717,59 @@ wuffs_base__pixel_swizzler__xxxxxxxx__y(uint8_t* dst_ptr,
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__xxxxxxxx__y_16be(uint8_t* dst_ptr,
+-                                             size_t dst_len,
+-                                             uint8_t* dst_palette_ptr,
+-                                             size_t dst_palette_len,
+-                                             const uint8_t* src_ptr,
+-                                             size_t src_len) {
+-  size_t dst_len8 = dst_len / 8;
+-  size_t src_len2 = src_len / 2;
+-  size_t len = (dst_len8 < src_len2) ? dst_len8 : src_len2;
++wuffs_private_impl__swizzle_bgra_nonpremul__rgba_premul__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+ 
+   while (n >= 1) {
+-    uint64_t s0 =
+-        ((uint64_t)(wuffs_base__peek_u16be__no_bounds_check(s + (0 * 2))));
+-    wuffs_base__poke_u64le__no_bounds_check(
+-        d + (0 * 8), 0xFFFF000000000000 | (0x000100010001 * s0));
++    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
++    uint32_t s0 = wuffs_private_impl__swap_u32_argb_abgr(
++        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        wuffs_private_impl__composite_nonpremul_premul_u32_axxx(d0, s0));
+ 
+-    s += 1 * 2;
+-    d += 1 * 8;
++    s += 1 * 4;
++    d += 1 * 4;
+     n -= 1;
+   }
+ 
+   return len;
+ }
+ 
+-// --------
+-
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__y__y_16be(uint8_t* dst_ptr,
+-                                      size_t dst_len,
+-                                      uint8_t* dst_palette_ptr,
+-                                      size_t dst_palette_len,
+-                                      const uint8_t* src_ptr,
+-                                      size_t src_len) {
++wuffs_private_impl__swizzle_bgra_nonpremul__ya_nonpremul__src(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
+   size_t src_len2 = src_len / 2;
+-  size_t len = (dst_len < src_len2) ? dst_len : src_len2;
++  size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+ 
++  // TODO: unroll.
++
+   while (n >= 1) {
+-    d[0] = s[0];
++    uint32_t s0 = ((uint32_t)(s[1]) << 24) | ((uint32_t)(s[0]) * 0x010101);
++    wuffs_base__poke_u32le__no_bounds_check(d + (0 * 4), s0);
+ 
+     s += 1 * 2;
+-    d += 1 * 1;
++    d += 1 * 4;
+     n -= 1;
+   }
+ 
+@@ -23637,27 +24777,31 @@ wuffs_base__pixel_swizzler__y__y_16be(uint8_t* dst_ptr,
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__y_16le__y_16be(uint8_t* dst_ptr,
+-                                           size_t dst_len,
+-                                           uint8_t* dst_palette_ptr,
+-                                           size_t dst_palette_len,
+-                                           const uint8_t* src_ptr,
+-                                           size_t src_len) {
+-  size_t dst_len2 = dst_len / 2;
++wuffs_private_impl__swizzle_bgra_nonpremul__ya_nonpremul__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
+   size_t src_len2 = src_len / 2;
+-  size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2;
++  size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
+   uint8_t* d = dst_ptr;
+   const uint8_t* s = src_ptr;
+   size_t n = len;
+ 
++  // TODO: unroll.
++
+   while (n >= 1) {
+-    uint8_t s0 = s[0];
+-    uint8_t s1 = s[1];
+-    d[0] = s1;
+-    d[1] = s0;
++    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
++    uint32_t s0 = ((uint32_t)(s[1]) << 24) | ((uint32_t)(s[0]) * 0x010101);
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        wuffs_private_impl__composite_nonpremul_nonpremul_u32_axxx(d0, s0));
+ 
+     s += 1 * 2;
+-    d += 1 * 2;
++    d += 1 * 4;
+     n -= 1;
+   }
+ 
+@@ -23667,6862 +24811,6000 @@ wuffs_base__pixel_swizzler__y_16le__y_16be(uint8_t* dst_ptr,
+ // --------
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__transparent_black_src(
++wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__bgra_nonpremul__src(
+     uint8_t* dst_ptr,
+     size_t dst_len,
+     uint8_t* dst_palette_ptr,
+     size_t dst_palette_len,
+-    uint64_t num_pixels,
+-    uint32_t dst_pixfmt_bytes_per_pixel) {
+-  uint64_t n = ((uint64_t)dst_len) / dst_pixfmt_bytes_per_pixel;
+-  if (n > num_pixels) {
+-    n = num_pixels;
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len8 = dst_len / 8;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++
++  size_t n = len;
++  while (n >= 1) {
++    uint8_t s0 = s[0];
++    uint8_t s1 = s[1];
++    uint8_t s2 = s[2];
++    uint8_t s3 = s[3];
++    d[0] = s0;
++    d[1] = s0;
++    d[2] = s1;
++    d[3] = s1;
++    d[4] = s2;
++    d[5] = s2;
++    d[6] = s3;
++    d[7] = s3;
++
++    s += 1 * 4;
++    d += 1 * 8;
++    n -= 1;
+   }
+-  memset(dst_ptr, 0, ((size_t)(n * dst_pixfmt_bytes_per_pixel)));
+-  return n;
++  return len;
+ }
+ 
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__transparent_black_src_over(
++wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__bgra_nonpremul__src_over(
+     uint8_t* dst_ptr,
+     size_t dst_len,
+     uint8_t* dst_palette_ptr,
+     size_t dst_palette_len,
+-    uint64_t num_pixels,
+-    uint32_t dst_pixfmt_bytes_per_pixel) {
+-  uint64_t n = ((uint64_t)dst_len) / dst_pixfmt_bytes_per_pixel;
+-  if (n > num_pixels) {
+-    n = num_pixels;
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len8 = dst_len / 8;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++
++  size_t n = len;
++  while (n >= 1) {
++    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
++    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
++        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
++    wuffs_base__poke_u64le__no_bounds_check(
++        d + (0 * 8),
++        wuffs_private_impl__composite_nonpremul_nonpremul_u64_axxx(d0, s0));
++
++    s += 1 * 4;
++    d += 1 * 8;
++    n -= 1;
+   }
+-  return n;
++  return len;
+ }
+ 
+-// --------
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__bgra_nonpremul_4x16le__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len8 = dst_len / 8;
++  size_t src_len8 = src_len / 8;
++  size_t len = (dst_len8 < src_len8) ? dst_len8 : src_len8;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
+ 
+-static wuffs_base__pixel_swizzler__func  //
+-wuffs_base__pixel_swizzler__prepare__y(wuffs_base__pixel_swizzler* p,
+-                                       wuffs_base__pixel_format dst_pixfmt,
+-                                       wuffs_base__slice_u8 dst_palette,
+-                                       wuffs_base__slice_u8 src_palette,
+-                                       wuffs_base__pixel_blend blend) {
+-  switch (dst_pixfmt.repr) {
+-    case WUFFS_BASE__PIXEL_FORMAT__Y:
+-      return wuffs_base__pixel_swizzler__copy_1_1;
++  size_t n = len;
++  while (n >= 1) {
++    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
++    uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
++    wuffs_base__poke_u64le__no_bounds_check(
++        d + (0 * 8),
++        wuffs_private_impl__composite_nonpremul_nonpremul_u64_axxx(d0, s0));
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
+-      return wuffs_base__pixel_swizzler__bgr_565__y;
++    s += 1 * 8;
++    d += 1 * 8;
++    n -= 1;
++  }
++  return len;
++}
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGB:
+-      return wuffs_base__pixel_swizzler__xxx__y;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__bgra_premul__src(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len8 = dst_len / 8;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-      if (wuffs_base__cpu_arch__have_x86_sse42()) {
+-        return wuffs_base__pixel_swizzler__xxxx__y__x86_sse42;
+-      }
+-#endif
+-      return wuffs_base__pixel_swizzler__xxxx__y;
++  size_t n = len;
++  while (n >= 1) {
++    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
++        wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
++            wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
++    wuffs_base__poke_u64le__no_bounds_check(d + (0 * 8), s0);
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE:
+-      return wuffs_base__pixel_swizzler__xxxxxxxx__y;
++    s += 1 * 4;
++    d += 1 * 8;
++    n -= 1;
+   }
+-  return NULL;
++  return len;
+ }
+ 
+-static wuffs_base__pixel_swizzler__func  //
+-wuffs_base__pixel_swizzler__prepare__y_16be(wuffs_base__pixel_swizzler* p,
+-                                            wuffs_base__pixel_format dst_pixfmt,
+-                                            wuffs_base__slice_u8 dst_palette,
+-                                            wuffs_base__slice_u8 src_palette,
+-                                            wuffs_base__pixel_blend blend) {
+-  switch (dst_pixfmt.repr) {
+-    case WUFFS_BASE__PIXEL_FORMAT__Y:
+-      return wuffs_base__pixel_swizzler__y__y_16be;
+-
+-    case WUFFS_BASE__PIXEL_FORMAT__Y_16LE:
+-      return wuffs_base__pixel_swizzler__y_16le__y_16be;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__bgra_premul__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len8 = dst_len / 8;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
+-      return wuffs_base__pixel_swizzler__copy_2_2;
++  size_t n = len;
++  while (n >= 1) {
++    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
++    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
++        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
++    wuffs_base__poke_u64le__no_bounds_check(
++        d + (0 * 8),
++        wuffs_private_impl__composite_nonpremul_premul_u64_axxx(d0, s0));
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
+-      return wuffs_base__pixel_swizzler__bgr_565__y_16be;
++    s += 1 * 4;
++    d += 1 * 8;
++    n -= 1;
++  }
++  return len;
++}
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGB:
+-      return wuffs_base__pixel_swizzler__xxx__y_16be;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__index_bgra_nonpremul__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  if (dst_palette_len !=
++      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
++    return 0;
++  }
++  size_t dst_len8 = dst_len / 8;
++  size_t len = (dst_len8 < src_len) ? dst_len8 : src_len;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
+-      return wuffs_base__pixel_swizzler__xxxx__y_16be;
++  while (n >= 1) {
++    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
++    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
++        wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
++                                                ((size_t)s[0] * 4)));
++    wuffs_base__poke_u64le__no_bounds_check(
++        d + (0 * 8),
++        wuffs_private_impl__composite_nonpremul_nonpremul_u64_axxx(d0, s0));
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE:
+-      return wuffs_base__pixel_swizzler__xxxxxxxx__y_16be;
++    s += 1 * 1;
++    d += 1 * 8;
++    n -= 1;
+   }
+-  return NULL;
+-}
+ 
+-static wuffs_base__pixel_swizzler__func  //
+-wuffs_base__pixel_swizzler__prepare__indexed__bgra_nonpremul(
+-    wuffs_base__pixel_swizzler* p,
+-    wuffs_base__pixel_format dst_pixfmt,
+-    wuffs_base__slice_u8 dst_palette,
+-    wuffs_base__slice_u8 src_palette,
+-    wuffs_base__pixel_blend blend) {
+-  switch (dst_pixfmt.repr) {
+-    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
+-      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
+-          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+-        return NULL;
+-      }
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__copy_1_1;
+-      }
+-      return NULL;
++  return len;
++}
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          if (wuffs_base__pixel_swizzler__squash_align4_bgr_565_8888(
+-                  dst_palette.ptr, dst_palette.len, src_palette.ptr,
+-                  src_palette.len, true) !=
+-              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
+-            return NULL;
+-          }
+-          return wuffs_base__pixel_swizzler__bgr_565__index__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
+-              WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+-            return NULL;
+-          }
+-          return wuffs_base__pixel_swizzler__bgr_565__index_bgra_nonpremul__src_over;
+-      }
+-      return NULL;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__rgba_nonpremul__src(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len8 = dst_len / 8;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          if (wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src(
+-                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
+-                  src_palette.len) !=
+-              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
+-            return NULL;
+-          }
+-          return wuffs_base__pixel_swizzler__xxx__index__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
+-              WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+-            return NULL;
+-          }
+-          return wuffs_base__pixel_swizzler__xxx__index_bgra_nonpremul__src_over;
+-      }
+-      return NULL;
++  size_t n = len;
++  while (n >= 1) {
++    uint8_t s0 = s[0];
++    uint8_t s1 = s[1];
++    uint8_t s2 = s[2];
++    uint8_t s3 = s[3];
++    d[0] = s2;
++    d[1] = s2;
++    d[2] = s1;
++    d[3] = s1;
++    d[4] = s0;
++    d[5] = s0;
++    d[6] = s3;
++    d[7] = s3;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
+-      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
+-          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+-        return NULL;
+-      }
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__xxxx__index__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul__index_bgra_nonpremul__src_over;
+-      }
+-      return NULL;
+-
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
+-      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
+-          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+-        return NULL;
+-      }
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__xxxxxxxx__index__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__index_bgra_nonpremul__src_over;
+-      }
+-      return NULL;
+-
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          if (wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src(
+-                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
+-                  src_palette.len) !=
+-              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
+-            return NULL;
+-          }
+-          return wuffs_base__pixel_swizzler__xxxx__index__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
+-              WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+-            return NULL;
+-          }
+-          return wuffs_base__pixel_swizzler__bgra_premul__index_bgra_nonpremul__src_over;
+-      }
+-      return NULL;
+-
+-    case WUFFS_BASE__PIXEL_FORMAT__RGB:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          if (wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src(
+-                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
+-                  src_palette.len) !=
+-              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
+-            return NULL;
+-          }
+-          return wuffs_base__pixel_swizzler__xxx__index__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(
+-                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
+-                  src_palette.len) !=
+-              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
+-            return NULL;
+-          }
+-          return wuffs_base__pixel_swizzler__xxx__index_bgra_nonpremul__src_over;
+-      }
+-      return NULL;
++    s += 1 * 4;
++    d += 1 * 8;
++    n -= 1;
++  }
++  return len;
++}
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
+-      if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(
+-              dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
+-              src_palette.len) !=
+-          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
+-        return NULL;
+-      }
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__xxxx__index__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul__index_bgra_nonpremul__src_over;
+-      }
+-      return NULL;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__rgba_nonpremul__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len8 = dst_len / 8;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          if (wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src(
+-                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
+-                  src_palette.len) !=
+-              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
+-            return NULL;
+-          }
+-          return wuffs_base__pixel_swizzler__xxxx__index__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(
+-                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
+-                  src_palette.len) !=
+-              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
+-            return NULL;
+-          }
+-          return wuffs_base__pixel_swizzler__bgra_premul__index_bgra_nonpremul__src_over;
+-      }
+-      return NULL;
++  size_t n = len;
++  while (n >= 1) {
++    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
++    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
++        wuffs_private_impl__swap_u32_argb_abgr(
++            wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
++    wuffs_base__poke_u64le__no_bounds_check(
++        d + (0 * 8),
++        wuffs_private_impl__composite_nonpremul_nonpremul_u64_axxx(d0, s0));
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
+-      // TODO.
+-      break;
++    s += 1 * 4;
++    d += 1 * 8;
++    n -= 1;
+   }
+-  return NULL;
++  return len;
+ }
+ 
+-static wuffs_base__pixel_swizzler__func  //
+-wuffs_base__pixel_swizzler__prepare__indexed__bgra_binary(
+-    wuffs_base__pixel_swizzler* p,
+-    wuffs_base__pixel_format dst_pixfmt,
+-    wuffs_base__slice_u8 dst_palette,
+-    wuffs_base__slice_u8 src_palette,
+-    wuffs_base__pixel_blend blend) {
+-  switch (dst_pixfmt.repr) {
+-    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:
+-      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
+-          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+-        return NULL;
+-      }
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__copy_1_1;
+-      }
+-      return NULL;
+-
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
+-      if (wuffs_base__pixel_swizzler__squash_align4_bgr_565_8888(
+-              dst_palette.ptr, dst_palette.len, src_palette.ptr,
+-              src_palette.len, false) !=
+-          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
+-        return NULL;
+-      }
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgr_565__index__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgr_565__index_binary_alpha__src_over;
+-      }
+-      return NULL;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__rgba_premul__src(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len8 = dst_len / 8;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR:
+-      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
+-          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+-        return NULL;
+-      }
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__xxx__index__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over;
+-      }
+-      return NULL;
++  size_t n = len;
++  while (n >= 1) {
++    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
++        wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
++            wuffs_private_impl__swap_u32_argb_abgr(
++                wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))));
++    wuffs_base__poke_u64le__no_bounds_check(d + (0 * 8), s0);
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
+-      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
+-          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+-        return NULL;
+-      }
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__xxxx__index__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over;
+-      }
+-      return NULL;
++    s += 1 * 4;
++    d += 1 * 8;
++    n -= 1;
++  }
++  return len;
++}
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
+-      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
+-          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
+-        return NULL;
+-      }
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__xxxxxxxx__index__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__xxxxxxxx__index_binary_alpha__src_over;
+-      }
+-      return NULL;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__rgba_premul__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len8 = dst_len / 8;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGB:
+-      if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(
+-              dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
+-              src_palette.len) !=
+-          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
+-        return NULL;
+-      }
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__xxx__index__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over;
+-      }
+-      return NULL;
++  size_t n = len;
++  while (n >= 1) {
++    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
++    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
++        wuffs_private_impl__swap_u32_argb_abgr(
++            wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
++    wuffs_base__poke_u64le__no_bounds_check(
++        d + (0 * 8),
++        wuffs_private_impl__composite_nonpremul_premul_u64_axxx(d0, s0));
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
+-      if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(
+-              dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
+-              src_palette.len) !=
+-          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
+-        return NULL;
+-      }
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__xxxx__index__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over;
+-      }
+-      return NULL;
++    s += 1 * 4;
++    d += 1 * 8;
++    n -= 1;
+   }
+-  return NULL;
++  return len;
+ }
+ 
+-static wuffs_base__pixel_swizzler__func  //
+-wuffs_base__pixel_swizzler__prepare__bgr_565(
+-    wuffs_base__pixel_swizzler* p,
+-    wuffs_base__pixel_format dst_pixfmt,
+-    wuffs_base__slice_u8 dst_palette,
+-    wuffs_base__slice_u8 src_palette,
+-    wuffs_base__pixel_blend blend) {
+-  switch (dst_pixfmt.repr) {
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
+-      return wuffs_base__pixel_swizzler__copy_2_2;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__ya_nonpremul__src(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len8 = dst_len / 8;
++  size_t src_len2 = src_len / 2;
++  size_t len = (dst_len8 < src_len2) ? dst_len8 : src_len2;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR:
+-      return wuffs_base__pixel_swizzler__bgr__bgr_565;
++  size_t n = len;
++  while (n >= 1) {
++    uint64_t s0 = ((uint64_t)(s[1]) * 0x0101000000000000) |
++                  ((uint64_t)(s[0]) * 0x0000010101010101);
++    wuffs_base__poke_u64le__no_bounds_check(d + (0 * 8), s0);
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
+-      return wuffs_base__pixel_swizzler__bgrw__bgr_565;
++    s += 1 * 2;
++    d += 1 * 8;
++    n -= 1;
++  }
++  return len;
++}
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
+-      return wuffs_base__pixel_swizzler__bgrw_4x16le__bgr_565;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__ya_nonpremul__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len8 = dst_len / 8;
++  size_t src_len2 = src_len / 2;
++  size_t len = (dst_len8 < src_len2) ? dst_len8 : src_len2;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGB:
+-      return wuffs_base__pixel_swizzler__rgb__bgr_565;
++  size_t n = len;
++  while (n >= 1) {
++    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
++    uint64_t s0 = ((uint64_t)(s[1]) * 0x0101000000000000) |
++                  ((uint64_t)(s[0]) * 0x0000010101010101);
++    wuffs_base__poke_u64le__no_bounds_check(
++        d + (0 * 8),
++        wuffs_private_impl__composite_nonpremul_nonpremul_u64_axxx(d0, s0));
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
+-      return wuffs_base__pixel_swizzler__rgbw__bgr_565;
++    s += 1 * 2;
++    d += 1 * 8;
++    n -= 1;
+   }
+-  return NULL;
++  return len;
+ }
+ 
+-static wuffs_base__pixel_swizzler__func  //
+-wuffs_base__pixel_swizzler__prepare__bgr(wuffs_base__pixel_swizzler* p,
+-                                         wuffs_base__pixel_format dst_pixfmt,
+-                                         wuffs_base__slice_u8 dst_palette,
+-                                         wuffs_base__slice_u8 src_palette,
+-                                         wuffs_base__pixel_blend blend) {
+-  switch (dst_pixfmt.repr) {
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
+-      return wuffs_base__pixel_swizzler__bgr_565__bgr;
+-
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR:
+-      return wuffs_base__pixel_swizzler__copy_3_3;
++// --------
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
+-      return wuffs_base__pixel_swizzler__bgrw__bgr;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul__src(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
+-      return wuffs_base__pixel_swizzler__bgrw_4x16le__bgr;
++  // TODO: unroll.
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGB:
+-      return wuffs_base__pixel_swizzler__swap_rgb_bgr;
++  while (n >= 1) {
++    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(s0));
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-      if (wuffs_base__cpu_arch__have_x86_sse42()) {
+-        return wuffs_base__pixel_swizzler__bgrw__rgb__x86_sse42;
+-      }
+-#endif
+-      return wuffs_base__pixel_swizzler__bgrw__rgb;
++    s += 1 * 4;
++    d += 1 * 4;
++    n -= 1;
+   }
+-  return NULL;
+-}
+ 
+-static wuffs_base__pixel_swizzler__func  //
+-wuffs_base__pixel_swizzler__prepare__bgra_nonpremul(
+-    wuffs_base__pixel_swizzler* p,
+-    wuffs_base__pixel_format dst_pixfmt,
+-    wuffs_base__slice_u8 dst_palette,
+-    wuffs_base__slice_u8 src_palette,
+-    wuffs_base__pixel_blend blend) {
+-  switch (dst_pixfmt.repr) {
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src_over;
+-      }
+-      return NULL;
++  return len;
++}
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src_over;
+-      }
+-      return NULL;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul_4x16le__src(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len8 = src_len / 8;
++  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__copy_4_4;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul__src_over;
+-      }
+-      return NULL;
++  // TODO: unroll.
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src_over;
+-      }
+-      return NULL;
++  while (n >= 1) {
++    uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(s0));
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over;
+-      }
+-      return NULL;
++    s += 1 * 8;
++    d += 1 * 4;
++    n -= 1;
++  }
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
+-      // TODO.
+-      break;
++  return len;
++}
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGB:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src_over;
+-      }
+-      return NULL;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-          if (wuffs_base__cpu_arch__have_x86_sse42()) {
+-            return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__x86_sse42;
+-          }
+-#endif
+-          return wuffs_base__pixel_swizzler__swap_rgbx_bgrx;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_nonpremul__src_over;
+-      }
+-      return NULL;
++  // TODO: unroll.
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over;
+-      }
+-      return NULL;
++  while (n >= 1) {
++    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
++    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        wuffs_private_impl__composite_premul_nonpremul_u32_axxx(d0, s0));
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
+-      // TODO.
+-      break;
++    s += 1 * 4;
++    d += 1 * 4;
++    n -= 1;
+   }
+-  return NULL;
++
++  return len;
+ }
+ 
+-static wuffs_base__pixel_swizzler__func  //
+-wuffs_base__pixel_swizzler__prepare__bgra_nonpremul_4x16le(
+-    wuffs_base__pixel_swizzler* p,
+-    wuffs_base__pixel_format dst_pixfmt,
+-    wuffs_base__slice_u8 dst_palette,
+-    wuffs_base__slice_u8 src_palette,
+-    wuffs_base__pixel_blend blend) {
+-  switch (dst_pixfmt.repr) {
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src_over;
+-      }
+-      return NULL;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul_4x16le__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len8 = src_len / 8;
++  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src_over;
+-      }
+-      return NULL;
++  // TODO: unroll.
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src_over;
+-      }
+-      return NULL;
++  while (n >= 1) {
++    uint64_t d0 = wuffs_base__color_u32__as__color_u64(
++        wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)));
++    uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        wuffs_base__color_u64__as__color_u32(
++            wuffs_private_impl__composite_premul_nonpremul_u64_axxx(d0, s0)));
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__copy_8_8;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul_4x16le__src_over;
+-      }
+-      return NULL;
+-
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src_over;
+-      }
+-      return NULL;
++    s += 1 * 8;
++    d += 1 * 4;
++    n -= 1;
++  }
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
+-      // TODO.
+-      break;
++  return len;
++}
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGB:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul_4x16le__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul_4x16le__src_over;
+-      }
+-      return NULL;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_premul__bgra_premul__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src_over;
+-      }
+-      break;
++  // TODO: unroll.
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src_over;
+-      }
+-      return NULL;
++  while (n >= 1) {
++    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
++    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        wuffs_private_impl__composite_premul_premul_u32_axxx(d0, s0));
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
+-      // TODO.
+-      break;
++    s += 1 * 4;
++    d += 1 * 4;
++    n -= 1;
+   }
+-  return NULL;
+-}
+ 
+-static wuffs_base__pixel_swizzler__func  //
+-wuffs_base__pixel_swizzler__prepare__bgra_premul(
+-    wuffs_base__pixel_swizzler* p,
+-    wuffs_base__pixel_format dst_pixfmt,
+-    wuffs_base__slice_u8 dst_palette,
+-    wuffs_base__slice_u8 src_palette,
+-    wuffs_base__pixel_blend blend) {
+-  switch (dst_pixfmt.repr) {
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src_over;
+-      }
+-      return NULL;
++  return len;
++}
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgr__bgra_premul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgr__bgra_premul__src_over;
+-      }
+-      return NULL;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_premul__index_bgra_nonpremul__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  if (dst_palette_len !=
++      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
++    return 0;
++  }
++  size_t dst_len4 = dst_len / 4;
++  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src_over;
+-      }
+-      return NULL;
++  // TODO: unroll.
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src_over;
+-      }
+-      return NULL;
++  while (n >= 1) {
++    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
++    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
++                                                          ((size_t)s[0] * 4));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        wuffs_private_impl__composite_premul_nonpremul_u32_axxx(d0, s0));
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__copy_4_4;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over;
+-      }
+-      return NULL;
++    s += 1 * 1;
++    d += 1 * 4;
++    n -= 1;
++  }
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGB:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgr__rgba_premul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgr__rgba_premul__src_over;
+-      }
+-      return NULL;
++  return len;
++}
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src_over;
+-      }
+-      return NULL;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul__src(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-          if (wuffs_base__cpu_arch__have_x86_sse42()) {
+-            return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__x86_sse42;
+-          }
+-#endif
+-          return wuffs_base__pixel_swizzler__swap_rgbx_bgrx;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_premul__rgba_premul__src_over;
+-      }
+-      return NULL;
+-  }
+-  return NULL;
+-}
++  // TODO: unroll.
+ 
+-static wuffs_base__pixel_swizzler__func  //
+-wuffs_base__pixel_swizzler__prepare__bgrx(wuffs_base__pixel_swizzler* p,
+-                                          wuffs_base__pixel_format dst_pixfmt,
+-                                          wuffs_base__slice_u8 dst_palette,
+-                                          wuffs_base__slice_u8 src_palette,
+-                                          wuffs_base__pixel_blend blend) {
+-  switch (dst_pixfmt.repr) {
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
+-      return wuffs_base__pixel_swizzler__bgr_565__bgrx;
++  while (n >= 1) {
++    uint32_t s0 = wuffs_private_impl__swap_u32_argb_abgr(
++        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(s0));
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR:
+-      return wuffs_base__pixel_swizzler__xxx__xxxx;
++    s += 1 * 4;
++    d += 1 * 4;
++    n -= 1;
++  }
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
+-      return wuffs_base__pixel_swizzler__bgrw__bgrx;
++  return len;
++}
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
+-      return wuffs_base__pixel_swizzler__bgrw_4x16le__bgrx;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
+-      return wuffs_base__pixel_swizzler__copy_4_4;
++  // TODO: unroll.
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGB:
+-      return wuffs_base__pixel_swizzler__bgr__rgbx;
++  while (n >= 1) {
++    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
++    uint32_t s0 = wuffs_private_impl__swap_u32_argb_abgr(
++        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        wuffs_private_impl__composite_premul_nonpremul_u32_axxx(d0, s0));
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
+-      return wuffs_base__pixel_swizzler__bgrw__rgbx;
++    s += 1 * 4;
++    d += 1 * 4;
++    n -= 1;
+   }
+-  return NULL;
+-}
+ 
+-static wuffs_base__pixel_swizzler__func  //
+-wuffs_base__pixel_swizzler__prepare__rgb(wuffs_base__pixel_swizzler* p,
+-                                         wuffs_base__pixel_format dst_pixfmt,
+-                                         wuffs_base__slice_u8 dst_palette,
+-                                         wuffs_base__slice_u8 src_palette,
+-                                         wuffs_base__pixel_blend blend) {
+-  switch (dst_pixfmt.repr) {
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
+-      return wuffs_base__pixel_swizzler__bgr_565__rgb;
+-
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR:
+-      return wuffs_base__pixel_swizzler__swap_rgb_bgr;
++  return len;
++}
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-      if (wuffs_base__cpu_arch__have_x86_sse42()) {
+-        return wuffs_base__pixel_swizzler__bgrw__rgb__x86_sse42;
+-      }
+-#endif
+-      return wuffs_base__pixel_swizzler__bgrw__rgb;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul_4x16le__src(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len8 = src_len / 8;
++  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
+-      return wuffs_base__pixel_swizzler__bgrw_4x16le__rgb;
++  // TODO: unroll.
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGB:
+-      return wuffs_base__pixel_swizzler__copy_3_3;
++  while (n >= 1) {
++    uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        wuffs_private_impl__swap_u32_argb_abgr(
++            wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
++                s0)));
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
+-      return wuffs_base__pixel_swizzler__bgrw__bgr;
++    s += 1 * 8;
++    d += 1 * 4;
++    n -= 1;
+   }
+-  return NULL;
+-}
+-
+-static wuffs_base__pixel_swizzler__func  //
+-wuffs_base__pixel_swizzler__prepare__rgba_nonpremul(
+-    wuffs_base__pixel_swizzler* p,
+-    wuffs_base__pixel_format dst_pixfmt,
+-    wuffs_base__slice_u8 dst_palette,
+-    wuffs_base__slice_u8 src_palette,
+-    wuffs_base__pixel_blend blend) {
+-  switch (dst_pixfmt.repr) {
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src_over;
+-      }
+-      return NULL;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src_over;
+-      }
+-      return NULL;
++  return len;
++}
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-          if (wuffs_base__cpu_arch__have_x86_sse42()) {
+-            return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__x86_sse42;
+-          }
+-#endif
+-          return wuffs_base__pixel_swizzler__swap_rgbx_bgrx;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_nonpremul__src_over;
+-      }
+-      return NULL;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul_4x16le__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len8 = src_len / 8;
++  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src_over;
+-      }
+-      return NULL;
++  // TODO: unroll.
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over;
+-      }
+-      return NULL;
++  while (n >= 1) {
++    uint64_t d0 = wuffs_base__color_u32__as__color_u64(
++        wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)));
++    uint64_t s0 = wuffs_private_impl__swap_u64_argb_abgr(
++        wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        wuffs_base__color_u64__as__color_u32(
++            wuffs_private_impl__composite_premul_nonpremul_u64_axxx(d0, s0)));
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
+-      // TODO.
+-      break;
++    s += 1 * 8;
++    d += 1 * 4;
++    n -= 1;
++  }
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGB:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src_over;
+-      }
+-      return NULL;
++  return len;
++}
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__copy_4_4;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul__src_over;
+-      }
+-      return NULL;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_premul__rgba_premul__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over;
+-      }
+-      return NULL;
++  while (n >= 1) {
++    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
++    uint32_t s0 = wuffs_private_impl__swap_u32_argb_abgr(
++        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        wuffs_private_impl__composite_premul_premul_u32_axxx(d0, s0));
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
+-      // TODO.
+-      break;
++    s += 1 * 4;
++    d += 1 * 4;
++    n -= 1;
+   }
+-  return NULL;
++
++  return len;
+ }
+ 
+-static wuffs_base__pixel_swizzler__func  //
+-wuffs_base__pixel_swizzler__prepare__rgba_premul(
+-    wuffs_base__pixel_swizzler* p,
+-    wuffs_base__pixel_format dst_pixfmt,
+-    wuffs_base__slice_u8 dst_palette,
+-    wuffs_base__slice_u8 src_palette,
+-    wuffs_base__pixel_blend blend) {
+-  switch (dst_pixfmt.repr) {
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src_over;
+-      }
+-      return NULL;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_premul__ya_nonpremul__src(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len2 = src_len / 2;
++  size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgr__rgba_premul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgr__rgba_premul__src_over;
+-      }
+-      return NULL;
++  // TODO: unroll.
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src_over;
+-      }
+-      return NULL;
++  while (n >= 1) {
++    uint32_t s0 = ((uint32_t)(s[1]) << 24) | ((uint32_t)(s[0]) * 0x010101);
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(s0));
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src_over;
+-      }
+-      return NULL;
++    s += 1 * 2;
++    d += 1 * 4;
++    n -= 1;
++  }
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-          if (wuffs_base__cpu_arch__have_x86_sse42()) {
+-            return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__x86_sse42;
+-          }
+-#endif
+-          return wuffs_base__pixel_swizzler__swap_rgbx_bgrx;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_premul__rgba_premul__src_over;
+-      }
+-      return NULL;
++  return len;
++}
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGB:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgr__bgra_premul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgr__bgra_premul__src_over;
+-      }
+-      return NULL;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgra_premul__ya_nonpremul__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len2 = src_len / 2;
++  size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src_over;
+-      }
+-      return NULL;
++  // TODO: unroll.
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
+-      switch (blend) {
+-        case WUFFS_BASE__PIXEL_BLEND__SRC:
+-          return wuffs_base__pixel_swizzler__copy_4_4;
+-        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-          return wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over;
+-      }
+-      return NULL;
++  while (n >= 1) {
++    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
++    uint32_t s0 = ((uint32_t)(s[1]) << 24) | ((uint32_t)(s[0]) * 0x010101);
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        wuffs_private_impl__composite_premul_nonpremul_u32_axxx(d0, s0));
++
++    s += 1 * 2;
++    d += 1 * 4;
++    n -= 1;
+   }
+-  return NULL;
++
++  return len;
+ }
+ 
+ // --------
+ 
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status  //
+-wuffs_base__pixel_swizzler__prepare(wuffs_base__pixel_swizzler* p,
+-                                    wuffs_base__pixel_format dst_pixfmt,
+-                                    wuffs_base__slice_u8 dst_palette,
+-                                    wuffs_base__pixel_format src_pixfmt,
+-                                    wuffs_base__slice_u8 src_palette,
+-                                    wuffs_base__pixel_blend blend) {
+-  if (!p) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  p->private_impl.func = NULL;
+-  p->private_impl.transparent_black_func = NULL;
+-  p->private_impl.dst_pixfmt_bytes_per_pixel = 0;
+-  p->private_impl.src_pixfmt_bytes_per_pixel = 0;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgrw__bgr(uint8_t* dst_ptr,
++                                      size_t dst_len,
++                                      uint8_t* dst_palette_ptr,
++                                      size_t dst_palette_len,
++                                      const uint8_t* src_ptr,
++                                      size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len3 = src_len / 3;
++  size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-  wuffs_base__pixel_swizzler__func func = NULL;
+-  wuffs_base__pixel_swizzler__transparent_black_func transparent_black_func =
+-      NULL;
++  // TODO: unroll.
+ 
+-  uint32_t dst_pixfmt_bits_per_pixel =
+-      wuffs_base__pixel_format__bits_per_pixel(&dst_pixfmt);
+-  if ((dst_pixfmt_bits_per_pixel == 0) ||
+-      ((dst_pixfmt_bits_per_pixel & 7) != 0)) {
+-    return wuffs_base__make_status(
+-        wuffs_base__error__unsupported_pixel_swizzler_option);
+-  }
++  while (n >= 1) {
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        0xFF000000 | wuffs_base__peek_u24le__no_bounds_check(s + (0 * 3)));
+ 
+-  uint32_t src_pixfmt_bits_per_pixel =
+-      wuffs_base__pixel_format__bits_per_pixel(&src_pixfmt);
+-  if ((src_pixfmt_bits_per_pixel == 0) ||
+-      ((src_pixfmt_bits_per_pixel & 7) != 0)) {
+-    return wuffs_base__make_status(
+-        wuffs_base__error__unsupported_pixel_swizzler_option);
++    s += 1 * 3;
++    d += 1 * 4;
++    n -= 1;
+   }
+ 
+-  // TODO: support many more formats.
+-
+-  switch (blend) {
+-    case WUFFS_BASE__PIXEL_BLEND__SRC:
+-      transparent_black_func =
+-          wuffs_base__pixel_swizzler__transparent_black_src;
+-      break;
++  return len;
++}
+ 
+-    case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
+-      transparent_black_func =
+-          wuffs_base__pixel_swizzler__transparent_black_src_over;
+-      break;
+-  }
++static uint64_t  //
++wuffs_private_impl__swizzle_bgrw__bgr_565(uint8_t* dst_ptr,
++                                          size_t dst_len,
++                                          uint8_t* dst_palette_ptr,
++                                          size_t dst_palette_len,
++                                          const uint8_t* src_ptr,
++                                          size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len2 = src_len / 2;
++  size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-  switch (src_pixfmt.repr) {
+-    case WUFFS_BASE__PIXEL_FORMAT__Y:
+-      func = wuffs_base__pixel_swizzler__prepare__y(p, dst_pixfmt, dst_palette,
+-                                                    src_palette, blend);
+-      break;
++  // TODO: unroll.
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
+-      func = wuffs_base__pixel_swizzler__prepare__y_16be(
+-          p, dst_pixfmt, dst_palette, src_palette, blend);
+-      break;
++  while (n >= 1) {
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4), wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
++                         wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2))));
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
+-      func = wuffs_base__pixel_swizzler__prepare__indexed__bgra_nonpremul(
+-          p, dst_pixfmt, dst_palette, src_palette, blend);
+-      break;
++    s += 1 * 2;
++    d += 1 * 4;
++    n -= 1;
++  }
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:
+-      func = wuffs_base__pixel_swizzler__prepare__indexed__bgra_binary(
+-          p, dst_pixfmt, dst_palette, src_palette, blend);
+-      break;
++  return len;
++}
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
+-      func = wuffs_base__pixel_swizzler__prepare__bgr_565(
+-          p, dst_pixfmt, dst_palette, src_palette, blend);
+-      break;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgrw__bgrx(uint8_t* dst_ptr,
++                                       size_t dst_len,
++                                       uint8_t* dst_palette_ptr,
++                                       size_t dst_palette_len,
++                                       const uint8_t* src_ptr,
++                                       size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR:
+-      func = wuffs_base__pixel_swizzler__prepare__bgr(
+-          p, dst_pixfmt, dst_palette, src_palette, blend);
+-      break;
++  // TODO: unroll.
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
+-      func = wuffs_base__pixel_swizzler__prepare__bgra_nonpremul(
+-          p, dst_pixfmt, dst_palette, src_palette, blend);
+-      break;
++  while (n >= 1) {
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        0xFF000000 | wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
+-      func = wuffs_base__pixel_swizzler__prepare__bgra_nonpremul_4x16le(
+-          p, dst_pixfmt, dst_palette, src_palette, blend);
+-      break;
++    s += 1 * 4;
++    d += 1 * 4;
++    n -= 1;
++  }
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
+-      func = wuffs_base__pixel_swizzler__prepare__bgra_premul(
+-          p, dst_pixfmt, dst_palette, src_palette, blend);
+-      break;
++  return len;
++}
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
+-      func = wuffs_base__pixel_swizzler__prepare__bgrx(
+-          p, dst_pixfmt, dst_palette, src_palette, blend);
+-      break;
++// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
++static uint64_t  //
++wuffs_private_impl__swizzle_bgrw__bgr__x86_sse42(uint8_t* dst_ptr,
++                                                 size_t dst_len,
++                                                 uint8_t* dst_palette_ptr,
++                                                 size_t dst_palette_len,
++                                                 const uint8_t* src_ptr,
++                                                 size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len3 = src_len / 3;
++  size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGB:
+-      func = wuffs_base__pixel_swizzler__prepare__rgb(
+-          p, dst_pixfmt, dst_palette, src_palette, blend);
+-      break;
++  __m128i shuffle = _mm_set_epi8(+0x00, +0x0B, +0x0A, +0x09,  //
++                                 +0x00, +0x08, +0x07, +0x06,  //
++                                 +0x00, +0x05, +0x04, +0x03,  //
++                                 +0x00, +0x02, +0x01, +0x00);
++  __m128i or_ff = _mm_set_epi8(-0x01, +0x00, +0x00, +0x00,  //
++                               -0x01, +0x00, +0x00, +0x00,  //
++                               -0x01, +0x00, +0x00, +0x00,  //
++                               -0x01, +0x00, +0x00, +0x00);
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
+-      func = wuffs_base__pixel_swizzler__prepare__rgba_nonpremul(
+-          p, dst_pixfmt, dst_palette, src_palette, blend);
+-      break;
++  while (n >= 6) {
++    __m128i x;
++    x = _mm_lddqu_si128((const __m128i*)(const void*)s);
++    x = _mm_shuffle_epi8(x, shuffle);
++    x = _mm_or_si128(x, or_ff);
++    _mm_storeu_si128((__m128i*)(void*)d, x);
+ 
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
+-      func = wuffs_base__pixel_swizzler__prepare__rgba_premul(
+-          p, dst_pixfmt, dst_palette, src_palette, blend);
+-      break;
++    s += 4 * 3;
++    d += 4 * 4;
++    n -= 4;
+   }
+ 
+-  p->private_impl.func = func;
+-  p->private_impl.transparent_black_func = transparent_black_func;
+-  p->private_impl.dst_pixfmt_bytes_per_pixel = dst_pixfmt_bits_per_pixel / 8;
+-  p->private_impl.src_pixfmt_bytes_per_pixel = src_pixfmt_bits_per_pixel / 8;
+-  return wuffs_base__make_status(
+-      func ? NULL : wuffs_base__error__unsupported_pixel_swizzler_option);
+-}
++  while (n >= 1) {
++    uint8_t b0 = s[0];
++    uint8_t b1 = s[1];
++    uint8_t b2 = s[2];
++    d[0] = b0;
++    d[1] = b1;
++    d[2] = b2;
++    d[3] = 0xFF;
+ 
+-WUFFS_BASE__MAYBE_STATIC uint64_t  //
+-wuffs_base__pixel_swizzler__limited_swizzle_u32_interleaved_from_reader(
+-    const wuffs_base__pixel_swizzler* p,
+-    uint32_t up_to_num_pixels,
+-    wuffs_base__slice_u8 dst,
+-    wuffs_base__slice_u8 dst_palette,
+-    const uint8_t** ptr_iop_r,
+-    const uint8_t* io2_r) {
+-  if (p && p->private_impl.func) {
+-    const uint8_t* iop_r = *ptr_iop_r;
+-    uint64_t src_len = wuffs_base__u64__min(
+-        ((uint64_t)up_to_num_pixels) *
+-            ((uint64_t)p->private_impl.src_pixfmt_bytes_per_pixel),
+-        ((uint64_t)(io2_r - iop_r)));
+-    uint64_t n =
+-        (*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr,
+-                                dst_palette.len, iop_r, (size_t)src_len);
+-    *ptr_iop_r += n * p->private_impl.src_pixfmt_bytes_per_pixel;
+-    return n;
++    s += 1 * 3;
++    d += 1 * 4;
++    n -= 1;
+   }
+-  return 0;
+-}
+ 
+-WUFFS_BASE__MAYBE_STATIC uint64_t  //
+-wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
+-    const wuffs_base__pixel_swizzler* p,
+-    wuffs_base__slice_u8 dst,
+-    wuffs_base__slice_u8 dst_palette,
+-    const uint8_t** ptr_iop_r,
+-    const uint8_t* io2_r) {
+-  if (p && p->private_impl.func) {
+-    const uint8_t* iop_r = *ptr_iop_r;
+-    uint64_t src_len = ((uint64_t)(io2_r - iop_r));
+-    uint64_t n =
+-        (*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr,
+-                                dst_palette.len, iop_r, (size_t)src_len);
+-    *ptr_iop_r += n * p->private_impl.src_pixfmt_bytes_per_pixel;
+-    return n;
+-  }
+-  return 0;
++  return len;
+ }
+ 
+-WUFFS_BASE__MAYBE_STATIC uint64_t  //
+-wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(
+-    const wuffs_base__pixel_swizzler* p,
+-    wuffs_base__slice_u8 dst,
+-    wuffs_base__slice_u8 dst_palette,
+-    wuffs_base__slice_u8 src) {
+-  if (p && p->private_impl.func) {
+-    return (*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr,
+-                                   dst_palette.len, src.ptr, src.len);
+-  }
+-  return 0;
+-}
++WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
++static uint64_t  //
++wuffs_private_impl__swizzle_bgrw__rgb__x86_sse42(uint8_t* dst_ptr,
++                                                 size_t dst_len,
++                                                 uint8_t* dst_palette_ptr,
++                                                 size_t dst_palette_len,
++                                                 const uint8_t* src_ptr,
++                                                 size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len3 = src_len / 3;
++  size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-WUFFS_BASE__MAYBE_STATIC uint64_t  //
+-wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(
+-    const wuffs_base__pixel_swizzler* p,
+-    wuffs_base__slice_u8 dst,
+-    wuffs_base__slice_u8 dst_palette,
+-    uint64_t num_pixels) {
+-  if (p && p->private_impl.transparent_black_func) {
+-    return (*p->private_impl.transparent_black_func)(
+-        dst.ptr, dst.len, dst_palette.ptr, dst_palette.len, num_pixels,
+-        p->private_impl.dst_pixfmt_bytes_per_pixel);
++  __m128i shuffle = _mm_set_epi8(+0x00, +0x09, +0x0A, +0x0B,  //
++                                 +0x00, +0x06, +0x07, +0x08,  //
++                                 +0x00, +0x03, +0x04, +0x05,  //
++                                 +0x00, +0x00, +0x01, +0x02);
++  __m128i or_ff = _mm_set_epi8(-0x01, +0x00, +0x00, +0x00,  //
++                               -0x01, +0x00, +0x00, +0x00,  //
++                               -0x01, +0x00, +0x00, +0x00,  //
++                               -0x01, +0x00, +0x00, +0x00);
++
++  while (n >= 6) {
++    __m128i x;
++    x = _mm_lddqu_si128((const __m128i*)(const void*)s);
++    x = _mm_shuffle_epi8(x, shuffle);
++    x = _mm_or_si128(x, or_ff);
++    _mm_storeu_si128((__m128i*)(void*)d, x);
++
++    s += 4 * 3;
++    d += 4 * 4;
++    n -= 4;
+   }
+-  return 0;
+-}
+ 
+-// --------
++  while (n >= 1) {
++    uint8_t b0 = s[0];
++    uint8_t b1 = s[1];
++    uint8_t b2 = s[2];
++    d[0] = b2;
++    d[1] = b1;
++    d[2] = b0;
++    d[3] = 0xFF;
+ 
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
+-WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
+-static void  //
+-wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_bgrx_x86_avx2(
+-    wuffs_base__pixel_buffer* dst,
+-    uint32_t x,
+-    uint32_t x_end,
+-    uint32_t y,
+-    const uint8_t* up0,
+-    const uint8_t* up1,
+-    const uint8_t* up2);
++    s += 1 * 3;
++    d += 1 * 4;
++    n -= 1;
++  }
+ 
+-WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
+-static void  //
+-wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_rgbx_x86_avx2(
+-    wuffs_base__pixel_buffer* dst,
+-    uint32_t x,
+-    uint32_t x_end,
+-    uint32_t y,
+-    const uint8_t* up0,
+-    const uint8_t* up1,
+-    const uint8_t* up2);
++  return len;
++}
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
+ 
+-#if defined(__GNUC__) && !defined(__clang__)
+-// No-op.
+-#else
+-WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
+-static const uint8_t*  //
+-wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v2_triangle_x86_avx2(
+-    uint8_t* dst_ptr,
+-    const uint8_t* src_ptr_major,
+-    const uint8_t* src_ptr_minor,
+-    size_t src_len,
+-    uint32_t h1v2_bias_ignored,
+-    bool first_column,
+-    bool last_column);
+-#endif
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_64)
++static uint64_t  //
++wuffs_private_impl__swizzle_bgrw__rgb(uint8_t* dst_ptr,
++                                      size_t dst_len,
++                                      uint8_t* dst_palette_ptr,
++                                      size_t dst_palette_len,
++                                      const uint8_t* src_ptr,
++                                      size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len3 = src_len / 3;
++  size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-// --------
++  while (n >= 1) {
++    uint8_t b0 = s[0];
++    uint8_t b1 = s[1];
++    uint8_t b2 = s[2];
++    d[0] = b2;
++    d[1] = b1;
++    d[2] = b0;
++    d[3] = 0xFF;
+ 
+-static inline uint32_t  //
+-wuffs_base__u32__max_of_4(uint32_t a, uint32_t b, uint32_t c, uint32_t d) {
+-  return wuffs_base__u32__max(     //
+-      wuffs_base__u32__max(a, b),  //
+-      wuffs_base__u32__max(c, d));
+-}
++    s += 1 * 3;
++    d += 1 * 4;
++    n -= 1;
++  }
+ 
+-static inline uint32_t  //
+-wuffs_base__u32__min_of_5(uint32_t a,
+-                          uint32_t b,
+-                          uint32_t c,
+-                          uint32_t d,
+-                          uint32_t e) {
+-  return wuffs_base__u32__min(          //
+-      wuffs_base__u32__min(             //
+-          wuffs_base__u32__min(a, b),   //
+-          wuffs_base__u32__min(c, d)),  //
+-      e);
++  return len;
+ }
+ 
+-// --------
++static uint64_t  //
++wuffs_private_impl__swizzle_bgrw__rgbx(uint8_t* dst_ptr,
++                                       size_t dst_len,
++                                       uint8_t* dst_palette_ptr,
++                                       size_t dst_palette_len,
++                                       const uint8_t* src_ptr,
++                                       size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-typedef void (*wuffs_base__pixel_swizzler__swizzle_ycc__convert_4_func)(
+-    wuffs_base__pixel_buffer* dst,
+-    uint32_t x,
+-    uint32_t x_end,
+-    uint32_t y,
+-    const uint8_t* up0,
+-    const uint8_t* up1,
+-    const uint8_t* up2,
+-    const uint8_t* up3);
++  // TODO: unroll.
+ 
+-static void  //
+-wuffs_base__pixel_swizzler__swizzle_cmyk__convert_4_general(
+-    wuffs_base__pixel_buffer* dst,
+-    uint32_t x,
+-    uint32_t x_end,
+-    uint32_t y,
+-    const uint8_t* up0,
+-    const uint8_t* up1,
+-    const uint8_t* up2,
+-    const uint8_t* up3) {
+-  for (; x < x_end; x++) {
+-    // It's called CMYK but, but for Adobe CMYK JPEG images in practice, it's
+-    // RGBW: 0xFFu means no ink instead of full ink. Note that a double
+-    // inversion is a no-op, so inversions might be implicit in the code below.
+-    uint32_t r = ((uint32_t)(*up0++));
+-    uint32_t g = ((uint32_t)(*up1++));
+-    uint32_t b = ((uint32_t)(*up2++));
+-    uint32_t w = ((uint32_t)(*up3++));
+-    r = ((r * w) + 0x7Fu) / 0xFFu;
+-    g = ((g * w) + 0x7Fu) / 0xFFu;
+-    b = ((b * w) + 0x7Fu) / 0xFFu;
+-    wuffs_base__pixel_buffer__set_color_u32_at(
+-        dst, x, y, 0xFF000000u | (r << 16u) | (g << 8u) | (b << 0u));
+-  }
+-}
++  while (n >= 1) {
++    uint8_t b0 = s[0];
++    uint8_t b1 = s[1];
++    uint8_t b2 = s[2];
++    d[0] = b2;
++    d[1] = b1;
++    d[2] = b0;
++    d[3] = 0xFF;
+ 
+-static void  //
+-wuffs_base__pixel_swizzler__swizzle_ycck__convert_4_general(
+-    wuffs_base__pixel_buffer* dst,
+-    uint32_t x,
+-    uint32_t x_end,
+-    uint32_t y,
+-    const uint8_t* up0,
+-    const uint8_t* up1,
+-    const uint8_t* up2,
+-    const uint8_t* up3) {
+-  for (; x < x_end; x++) {
+-    // We invert once again: 0xFFu means no ink instead of full ink.
+-    uint32_t color =                           //
+-        wuffs_base__color_ycc__as__color_u32(  //
+-            *up0++, *up1++, *up2++);
+-    uint32_t r = 0xFFu - (0xFFu & (color >> 16u));
+-    uint32_t g = 0xFFu - (0xFFu & (color >> 8u));
+-    uint32_t b = 0xFFu - (0xFFu & (color >> 0u));
+-    uint32_t w = ((uint32_t)(*up3++));
+-    r = ((r * w) + 0x7Fu) / 0xFFu;
+-    g = ((g * w) + 0x7Fu) / 0xFFu;
+-    b = ((b * w) + 0x7Fu) / 0xFFu;
+-    wuffs_base__pixel_buffer__set_color_u32_at(
+-        dst, x, y, 0xFF000000u | (r << 16u) | (g << 8u) | (b << 0u));
++    s += 1 * 4;
++    d += 1 * 4;
++    n -= 1;
+   }
++
++  return len;
+ }
+ 
+ // --------
+ 
+-typedef void (*wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_func)(
+-    wuffs_base__pixel_buffer* dst,
+-    uint32_t x,
+-    uint32_t x_end,
+-    uint32_t y,
+-    const uint8_t* up0,
+-    const uint8_t* up1,
+-    const uint8_t* up2);
++static uint64_t  //
++wuffs_private_impl__swizzle_bgrw_4x16le__bgr(uint8_t* dst_ptr,
++                                             size_t dst_len,
++                                             uint8_t* dst_palette_ptr,
++                                             size_t dst_palette_len,
++                                             const uint8_t* src_ptr,
++                                             size_t src_len) {
++  size_t dst_len8 = dst_len / 8;
++  size_t src_len3 = src_len / 3;
++  size_t len = (dst_len8 < src_len3) ? dst_len8 : src_len3;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-static void  //
+-wuffs_base__pixel_swizzler__swizzle_rgb__convert_3_general(
+-    wuffs_base__pixel_buffer* dst,
+-    uint32_t x,
+-    uint32_t x_end,
+-    uint32_t y,
+-    const uint8_t* up0,
+-    const uint8_t* up1,
+-    const uint8_t* up2) {
+-  for (; x < x_end; x++) {
+-    uint32_t color = 0xFF000000u |                    //
+-                     (((uint32_t)(*up0++)) << 16u) |  //
+-                     (((uint32_t)(*up1++)) << 8u) |   //
+-                     (((uint32_t)(*up2++)) << 0u);
+-    wuffs_base__pixel_buffer__set_color_u32_at(dst, x, y, color);
+-  }
+-}
++  while (n >= 1) {
++    uint8_t s0 = s[0];
++    uint8_t s1 = s[1];
++    uint8_t s2 = s[2];
++    d[0] = s0;
++    d[1] = s0;
++    d[2] = s1;
++    d[3] = s1;
++    d[4] = s2;
++    d[5] = s2;
++    d[6] = 0xFF;
++    d[7] = 0xFF;
+ 
+-static void  //
+-wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_general(
+-    wuffs_base__pixel_buffer* dst,
+-    uint32_t x,
+-    uint32_t x_end,
+-    uint32_t y,
+-    const uint8_t* up0,
+-    const uint8_t* up1,
+-    const uint8_t* up2) {
+-  for (; x < x_end; x++) {
+-    uint32_t color =                           //
+-        wuffs_base__color_ycc__as__color_u32(  //
+-            *up0++, *up1++, *up2++);
+-    wuffs_base__pixel_buffer__set_color_u32_at(dst, x, y, color);
++    s += 1 * 3;
++    d += 1 * 8;
++    n -= 1;
+   }
+-}
+-
+-static void  //
+-wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_bgrx(
+-    wuffs_base__pixel_buffer* dst,
+-    uint32_t x,
+-    uint32_t x_end,
+-    uint32_t y,
+-    const uint8_t* up0,
+-    const uint8_t* up1,
+-    const uint8_t* up2) {
+-  size_t dst_stride = dst->private_impl.planes[0].stride;
+-  uint8_t* dst_iter = dst->private_impl.planes[0].ptr +
+-                      (dst_stride * ((size_t)y)) + (4u * ((size_t)x));
+ 
+-  for (; x < x_end; x++) {
+-    uint32_t color =                           //
+-        wuffs_base__color_ycc__as__color_u32(  //
+-            *up0++, *up1++, *up2++);
+-    wuffs_base__poke_u32le__no_bounds_check(dst_iter, color);
+-    dst_iter += 4u;
+-  }
++  return len;
+ }
+ 
+-static void  //
+-wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_rgbx(
+-    wuffs_base__pixel_buffer* dst,
+-    uint32_t x,
+-    uint32_t x_end,
+-    uint32_t y,
+-    const uint8_t* up0,
+-    const uint8_t* up1,
+-    const uint8_t* up2) {
+-  size_t dst_stride = dst->private_impl.planes[0].stride;
+-  uint8_t* dst_iter = dst->private_impl.planes[0].ptr +
+-                      (dst_stride * ((size_t)y)) + (4u * ((size_t)x));
++static uint64_t  //
++wuffs_private_impl__swizzle_bgrw_4x16le__bgr_565(uint8_t* dst_ptr,
++                                                 size_t dst_len,
++                                                 uint8_t* dst_palette_ptr,
++                                                 size_t dst_palette_len,
++                                                 const uint8_t* src_ptr,
++                                                 size_t src_len) {
++  size_t dst_len8 = dst_len / 8;
++  size_t src_len2 = src_len / 2;
++  size_t len = (dst_len8 < src_len2) ? dst_len8 : src_len2;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-  for (; x < x_end; x++) {
+-    uint32_t color =                                //
+-        wuffs_base__color_ycc__as__color_u32_abgr(  //
+-            *up0++, *up1++, *up2++);
+-    wuffs_base__poke_u32le__no_bounds_check(dst_iter, color);
+-    dst_iter += 4u;
++  while (n >= 1) {
++    wuffs_base__poke_u64le__no_bounds_check(
++        d + (0 * 8),
++        wuffs_base__color_u32__as__color_u64(
++            wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
++                wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2)))));
++
++    s += 1 * 2;
++    d += 1 * 8;
++    n -= 1;
+   }
++
++  return len;
+ }
+ 
+-// --------
++static uint64_t  //
++wuffs_private_impl__swizzle_bgrw_4x16le__bgrx(uint8_t* dst_ptr,
++                                              size_t dst_len,
++                                              uint8_t* dst_palette_ptr,
++                                              size_t dst_palette_len,
++                                              const uint8_t* src_ptr,
++                                              size_t src_len) {
++  size_t dst_len8 = dst_len / 8;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-// wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upsamples to a
+-// destination slice at least 480 (YCCK) or 672 (YCC) bytes long and whose
+-// src_len (multiplied by 1, 2, 3 or 4) is positive but no more than that. This
+-// 480 or 672 length is just under 1/4 or 1/3 of the scratch_buffer_2k slice
+-// length. Both (480 * 4) = 1920 and (672 * 3) = 2016 are less than 2048.
+-//
+-// 480 and 672 are nice round numbers because a JPEG MCU is 1, 2, 3 or 4 blocks
+-// wide and each block is 8 pixels wide. We have:
+-//   480 = 1 * 8 * 60,   672 = 1 * 8 * 84
+-//   480 = 2 * 8 * 30,   672 = 2 * 8 * 42
+-//   480 = 3 * 8 * 20,   672 = 3 * 8 * 28
+-//   480 = 4 * 8 * 15,   672 = 4 * 8 * 21
+-//
+-// Box filters are equivalent to nearest neighbor upsampling. These ignore the
+-// src_ptr_minor, h1v2_bias, first_column and last_column arguments.
+-//
+-// Triangle filters use a 3:1 ratio (in 1 dimension), or 9:3:3:1 (in 2
+-// dimensions), which is higher quality (less blocky) but also higher
+-// computational effort.
+-//
+-// In theory, we could use triangle filters for any (inv_h, inv_v) combination.
+-// In practice, matching libjpeg-turbo, we only implement it for the common
+-// chroma subsampling ratios (YCC420, YCC422 or YCC440), corresponding to an
+-// (inv_h, inv_v) pair of (2, 2), (2, 1) or (1, 2).
+-typedef const uint8_t* (
+-    *wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func)(
+-    uint8_t* dst_ptr,
+-    const uint8_t* src_ptr_major,  // Nearest row.
+-    const uint8_t* src_ptr_minor,  // Adjacent row, alternating above or below.
+-    size_t src_len,
+-    uint32_t h1v2_bias,
+-    bool first_column,
+-    bool last_column);
++  while (n >= 1) {
++    uint8_t s0 = s[0];
++    uint8_t s1 = s[1];
++    uint8_t s2 = s[2];
++    d[0] = s0;
++    d[1] = s0;
++    d[2] = s1;
++    d[3] = s1;
++    d[4] = s2;
++    d[5] = s2;
++    d[6] = 0xFF;
++    d[7] = 0xFF;
+ 
+-static const uint8_t*  //
+-wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1vn_box(
+-    uint8_t* dst_ptr,
+-    const uint8_t* src_ptr_major,
+-    const uint8_t* src_ptr_minor_ignored,
+-    size_t src_len,
+-    uint32_t h1v2_bias_ignored,
+-    bool first_column_ignored,
+-    bool last_column_ignored) {
+-  return src_ptr_major;
++    s += 1 * 4;
++    d += 1 * 8;
++    n -= 1;
++  }
++
++  return len;
+ }
+ 
+-static const uint8_t*  //
+-wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2vn_box(
+-    uint8_t* dst_ptr,
+-    const uint8_t* src_ptr_major,
+-    const uint8_t* src_ptr_minor_ignored,
+-    size_t src_len,
+-    uint32_t h1v2_bias_ignored,
+-    bool first_column_ignored,
+-    bool last_column_ignored) {
+-  uint8_t* dp = dst_ptr;
+-  const uint8_t* sp = src_ptr_major;
+-  while (src_len--) {
+-    uint8_t sv = *sp++;
+-    *dp++ = sv;
+-    *dp++ = sv;
++static uint64_t  //
++wuffs_private_impl__swizzle_bgrw_4x16le__rgb(uint8_t* dst_ptr,
++                                             size_t dst_len,
++                                             uint8_t* dst_palette_ptr,
++                                             size_t dst_palette_len,
++                                             const uint8_t* src_ptr,
++                                             size_t src_len) {
++  size_t dst_len8 = dst_len / 8;
++  size_t src_len3 = src_len / 3;
++  size_t len = (dst_len8 < src_len3) ? dst_len8 : src_len3;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
++
++  while (n >= 1) {
++    uint8_t s0 = s[0];
++    uint8_t s1 = s[1];
++    uint8_t s2 = s[2];
++    d[0] = s2;
++    d[1] = s2;
++    d[2] = s1;
++    d[3] = s1;
++    d[4] = s0;
++    d[5] = s0;
++    d[6] = 0xFF;
++    d[7] = 0xFF;
++
++    s += 1 * 3;
++    d += 1 * 8;
++    n -= 1;
+   }
+-  return dst_ptr;
++
++  return len;
+ }
+ 
+-static const uint8_t*  //
+-wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h3vn_box(
+-    uint8_t* dst_ptr,
+-    const uint8_t* src_ptr_major,
+-    const uint8_t* src_ptr_minor_ignored,
+-    size_t src_len,
+-    uint32_t h1v2_bias_ignored,
+-    bool first_column_ignored,
+-    bool last_column_ignored) {
+-  uint8_t* dp = dst_ptr;
+-  const uint8_t* sp = src_ptr_major;
+-  while (src_len--) {
+-    uint8_t sv = *sp++;
+-    *dp++ = sv;
+-    *dp++ = sv;
+-    *dp++ = sv;
++// --------
++
++static uint64_t  //
++wuffs_private_impl__swizzle_rgb__bgr_565(uint8_t* dst_ptr,
++                                         size_t dst_len,
++                                         uint8_t* dst_palette_ptr,
++                                         size_t dst_palette_len,
++                                         const uint8_t* src_ptr,
++                                         size_t src_len) {
++  size_t dst_len3 = dst_len / 3;
++  size_t src_len2 = src_len / 2;
++  size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
++
++  // TODO: unroll.
++
++  while (n >= 1) {
++    wuffs_base__poke_u24le__no_bounds_check(
++        d + (0 * 3),
++        wuffs_private_impl__swap_u32_argb_abgr(
++            wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
++                wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2)))));
++
++    s += 1 * 2;
++    d += 1 * 3;
++    n -= 1;
+   }
+-  return dst_ptr;
++
++  return len;
+ }
+ 
+-static const uint8_t*  //
+-wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h4vn_box(
++// --------
++
++static uint64_t  //
++wuffs_private_impl__swizzle_rgba_nonpremul__bgra_nonpremul_4x16le__src(
+     uint8_t* dst_ptr,
+-    const uint8_t* src_ptr_major,
+-    const uint8_t* src_ptr_minor_ignored,
+-    size_t src_len,
+-    uint32_t h1v2_bias_ignored,
+-    bool first_column_ignored,
+-    bool last_column_ignored) {
+-  uint8_t* dp = dst_ptr;
+-  const uint8_t* sp = src_ptr_major;
+-  while (src_len--) {
+-    uint8_t sv = *sp++;
+-    *dp++ = sv;
+-    *dp++ = sv;
+-    *dp++ = sv;
+-    *dp++ = sv;
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len8 = src_len / 8;
++  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++
++  size_t n = len;
++  while (n >= 1) {
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        wuffs_private_impl__color_u64__as__color_u32__swap_u32_argb_abgr(
++            wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8))));
++
++    s += 1 * 8;
++    d += 1 * 4;
++    n -= 1;
+   }
+-  return dst_ptr;
++  return len;
+ }
+ 
+-static const uint8_t*  //
+-wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1v2_triangle(
++static uint64_t  //
++wuffs_private_impl__swizzle_rgba_nonpremul__bgra_nonpremul_4x16le__src_over(
+     uint8_t* dst_ptr,
+-    const uint8_t* src_ptr_major,
+-    const uint8_t* src_ptr_minor,
+-    size_t src_len,
+-    uint32_t h1v2_bias,
+-    bool first_column,
+-    bool last_column) {
+-  uint8_t* dp = dst_ptr;
+-  const uint8_t* sp_major = src_ptr_major;
+-  const uint8_t* sp_minor = src_ptr_minor;
+-  while (src_len--) {
+-    *dp++ = (uint8_t)(((3u * ((uint32_t)(*sp_major++))) +  //
+-                       (1u * ((uint32_t)(*sp_minor++))) +  //
+-                       h1v2_bias) >>
+-                      2u);
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len8 = src_len / 8;
++  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
++
++  while (n >= 1) {
++    uint64_t d0 = wuffs_base__color_u32__as__color_u64(
++        wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)));
++    uint64_t s0 = wuffs_private_impl__swap_u64_argb_abgr(
++        wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        wuffs_base__color_u64__as__color_u32(
++            wuffs_private_impl__composite_nonpremul_nonpremul_u64_axxx(d0,
++                                                                       s0)));
++
++    s += 1 * 8;
++    d += 1 * 4;
++    n -= 1;
+   }
+-  return dst_ptr;
++
++  return len;
+ }
+ 
+-static const uint8_t*  //
+-wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v1_triangle(
+-    uint8_t* dst_ptr,
+-    const uint8_t* src_ptr_major,
+-    const uint8_t* src_ptr_minor,
+-    size_t src_len,
+-    uint32_t h1v2_bias_ignored,
+-    bool first_column,
+-    bool last_column) {
+-  uint8_t* dp = dst_ptr;
+-  const uint8_t* sp = src_ptr_major;
++// --------
+ 
+-  if (first_column) {
+-    src_len--;
+-    if ((src_len <= 0u) && last_column) {
+-      uint8_t sv = *sp++;
+-      *dp++ = sv;
+-      *dp++ = sv;
+-      return dst_ptr;
+-    }
+-    uint32_t svp1 = sp[+1];
+-    uint8_t sv = *sp++;
+-    *dp++ = sv;
+-    *dp++ = (uint8_t)(((3u * (uint32_t)sv) + svp1 + 2u) >> 2u);
+-    if (src_len <= 0u) {
+-      return dst_ptr;
+-    }
+-  }
++static uint64_t  //
++wuffs_private_impl__swizzle_rgbw__bgr_565(uint8_t* dst_ptr,
++                                          size_t dst_len,
++                                          uint8_t* dst_palette_ptr,
++                                          size_t dst_palette_len,
++                                          const uint8_t* src_ptr,
++                                          size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len2 = src_len / 2;
++  size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-  if (last_column) {
+-    src_len--;
+-  }
++  // TODO: unroll.
+ 
+-  for (; src_len > 0u; src_len--) {
+-    uint32_t svm1 = sp[-1];
+-    uint32_t svp1 = sp[+1];
+-    uint32_t sv3 = 3u * (uint32_t)(*sp++);
+-    *dp++ = (uint8_t)((sv3 + svm1 + 1u) >> 2u);
+-    *dp++ = (uint8_t)((sv3 + svp1 + 2u) >> 2u);
+-  }
++  while (n >= 1) {
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4),
++        wuffs_private_impl__swap_u32_argb_abgr(
++            wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
++                wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2)))));
+ 
+-  if (last_column) {
+-    uint32_t svm1 = sp[-1];
+-    uint8_t sv = *sp++;
+-    *dp++ = (uint8_t)(((3u * (uint32_t)sv) + svm1 + 1u) >> 2u);
+-    *dp++ = sv;
++    s += 1 * 2;
++    d += 1 * 4;
++    n -= 1;
+   }
+ 
+-  return dst_ptr;
++  return len;
+ }
+ 
+-static const uint8_t*  //
+-wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v2_triangle(
+-    uint8_t* dst_ptr,
+-    const uint8_t* src_ptr_major,
+-    const uint8_t* src_ptr_minor,
+-    size_t src_len,
+-    uint32_t h1v2_bias_ignored,
+-    bool first_column,
+-    bool last_column) {
+-  uint8_t* dp = dst_ptr;
+-  const uint8_t* sp_major = src_ptr_major;
+-  const uint8_t* sp_minor = src_ptr_minor;
++// --------
+ 
+-  if (first_column) {
+-    src_len--;
+-    if ((src_len <= 0u) && last_column) {
+-      uint32_t sv = (12u * ((uint32_t)(*sp_major++))) +  //
+-                    (4u * ((uint32_t)(*sp_minor++)));
+-      *dp++ = (uint8_t)((sv + 8u) >> 4u);
+-      *dp++ = (uint8_t)((sv + 7u) >> 4u);
+-      return dst_ptr;
+-    }
++static uint64_t  //
++wuffs_private_impl__swizzle_xxx__index__src(uint8_t* dst_ptr,
++                                            size_t dst_len,
++                                            uint8_t* dst_palette_ptr,
++                                            size_t dst_palette_len,
++                                            const uint8_t* src_ptr,
++                                            size_t src_len) {
++  if (dst_palette_len !=
++      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
++    return 0;
++  }
++  size_t dst_len3 = dst_len / 3;
++  size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    uint32_t sv_major_m1 = sp_major[-0];  // Clamp offset to zero.
+-    uint32_t sv_minor_m1 = sp_minor[-0];  // Clamp offset to zero.
+-    uint32_t sv_major_p1 = sp_major[+1];
+-    uint32_t sv_minor_p1 = sp_minor[+1];
++  const size_t loop_unroll_count = 4;
+ 
+-    uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
+-                  (3u * ((uint32_t)(*sp_minor++)));
+-    *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
+-    *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
+-    if (src_len <= 0u) {
+-      return dst_ptr;
+-    }
+-  }
++  // The comparison in the while condition is ">", not ">=", because with
++  // ">=", the last 4-byte store could write past the end of the dst slice.
++  //
++  // Each 4-byte store writes one too many bytes, but a subsequent store
++  // will overwrite that with the correct byte. There is always another
++  // store, whether a 4-byte store in this loop or a 1-byte store in the
++  // next loop.
++  while (n > loop_unroll_count) {
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 3), wuffs_base__peek_u32le__no_bounds_check(
++                         dst_palette_ptr + ((size_t)s[0] * 4)));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (1 * 3), wuffs_base__peek_u32le__no_bounds_check(
++                         dst_palette_ptr + ((size_t)s[1] * 4)));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (2 * 3), wuffs_base__peek_u32le__no_bounds_check(
++                         dst_palette_ptr + ((size_t)s[2] * 4)));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (3 * 3), wuffs_base__peek_u32le__no_bounds_check(
++                         dst_palette_ptr + ((size_t)s[3] * 4)));
+ 
+-  if (last_column) {
+-    src_len--;
++    s += loop_unroll_count * 1;
++    d += loop_unroll_count * 3;
++    n -= loop_unroll_count;
+   }
+ 
+-  for (; src_len > 0u; src_len--) {
+-    uint32_t sv_major_m1 = sp_major[-1];
+-    uint32_t sv_minor_m1 = sp_minor[-1];
+-    uint32_t sv_major_p1 = sp_major[+1];
+-    uint32_t sv_minor_p1 = sp_minor[+1];
++  while (n >= 1) {
++    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
++                                                          ((size_t)s[0] * 4));
++    wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
+ 
+-    uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
+-                  (3u * ((uint32_t)(*sp_minor++)));
+-    *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
+-    *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
++    s += 1 * 1;
++    d += 1 * 3;
++    n -= 1;
+   }
+ 
+-  if (last_column) {
+-    uint32_t sv_major_m1 = sp_major[-1];
+-    uint32_t sv_minor_m1 = sp_minor[-1];
+-    uint32_t sv_major_p1 = sp_major[+0];  // Clamp offset to zero.
+-    uint32_t sv_minor_p1 = sp_minor[+0];  // Clamp offset to zero.
++  return len;
++}
+ 
+-    uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
+-                  (3u * ((uint32_t)(*sp_minor++)));
+-    *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
+-    *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
++static uint64_t  //
++wuffs_private_impl__swizzle_xxx__index_bgra_nonpremul__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  if (dst_palette_len !=
++      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
++    return 0;
+   }
++  size_t dst_len3 = dst_len / 3;
++  size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-  return dst_ptr;
+-}
++  // TODO: unroll.
+ 
+-// wuffs_base__pixel_swizzler__swizzle_ycc__upsample_funcs is indexed by inv_h
+-// and then inv_v.
+-static const wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func
+-    wuffs_base__pixel_swizzler__swizzle_ycc__upsample_funcs[4][4] = {
+-        {
+-            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1vn_box,
+-            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1vn_box,
+-            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1vn_box,
+-            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1vn_box,
+-        },
+-        {
+-            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2vn_box,
+-            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2vn_box,
+-            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2vn_box,
+-            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2vn_box,
+-        },
+-        {
+-            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h3vn_box,
+-            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h3vn_box,
+-            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h3vn_box,
+-            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h3vn_box,
+-        },
+-        {
+-            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h4vn_box,
+-            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h4vn_box,
+-            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h4vn_box,
+-            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h4vn_box,
+-        },
+-};
++  while (n >= 1) {
++    uint32_t d0 =
++        wuffs_base__peek_u24le__no_bounds_check(d + (0 * 3)) | 0xFF000000;
++    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
++                                                          ((size_t)s[0] * 4));
++    wuffs_base__poke_u24le__no_bounds_check(
++        d + (0 * 3),
++        wuffs_private_impl__composite_premul_nonpremul_u32_axxx(d0, s0));
+ 
+-static inline uint32_t  //
+-wuffs_base__pixel_swizzler__has_triangle_upsampler(uint32_t inv_h,
+-                                                   uint32_t inv_v) {
+-  if (inv_h == 1u) {
+-    return inv_v == 2u;
+-  } else if (inv_h == 2u) {
+-    return (inv_v == 1u) || (inv_v == 2u);
++    s += 1 * 1;
++    d += 1 * 3;
++    n -= 1;
+   }
+-  return false;
++
++  return len;
+ }
+ 
+-// --------
++static uint64_t  //
++wuffs_private_impl__swizzle_xxx__index_binary_alpha__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  if (dst_palette_len !=
++      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
++    return 0;
++  }
++  size_t dst_len3 = dst_len / 3;
++  size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-// All of the wuffs_base__pixel_swizzler__swizzle_ycc__etc functions have
+-// preconditions. See all of the checks made in
+-// wuffs_base__pixel_swizzler__swizzle_ycck before calling these functions. For
+-// example, (width > 0) is a precondition, but there are many more.
++  const size_t loop_unroll_count = 4;
+ 
+-static void  //
+-wuffs_base__pixel_swizzler__swizzle_ycck__general__triangle_filter_edge_row(
+-    wuffs_base__pixel_buffer* dst,
+-    uint32_t width,
+-    uint32_t y,
+-    const uint8_t* src_ptr0,
+-    const uint8_t* src_ptr1,
+-    const uint8_t* src_ptr2,
+-    const uint8_t* src_ptr3,
+-    uint32_t stride0,
+-    uint32_t stride1,
+-    uint32_t stride2,
+-    uint32_t stride3,
+-    uint32_t inv_h0,
+-    uint32_t inv_h1,
+-    uint32_t inv_h2,
+-    uint32_t inv_h3,
+-    uint32_t inv_v0,
+-    uint32_t inv_v1,
+-    uint32_t inv_v2,
+-    uint32_t inv_v3,
+-    uint32_t half_width_for_2to1,
+-    uint32_t h1v2_bias,
+-    uint8_t* scratch_buffer_2k_ptr,
+-    wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc0,
+-    wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc1,
+-    wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc2,
+-    wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc3,
+-    wuffs_base__pixel_swizzler__swizzle_ycc__convert_4_func conv4func) {
+-  const uint8_t* src0 = src_ptr0 + ((y / inv_v0) * (size_t)stride0);
+-  const uint8_t* src1 = src_ptr1 + ((y / inv_v1) * (size_t)stride1);
+-  const uint8_t* src2 = src_ptr2 + ((y / inv_v2) * (size_t)stride2);
+-  const uint8_t* src3 = src_ptr3 + ((y / inv_v3) * (size_t)stride3);
+-  uint32_t total_src_len0 = 0u;
+-  uint32_t total_src_len1 = 0u;
+-  uint32_t total_src_len2 = 0u;
+-  uint32_t total_src_len3 = 0u;
+-
+-  uint32_t x = 0u;
+-  while (x < width) {
+-    bool first_column = x == 0u;
+-    uint32_t end = x + 480u;
+-    if (end > width) {
+-      end = width;
++  while (n >= loop_unroll_count) {
++    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
++                                                          ((size_t)s[0] * 4));
++    if (s0) {
++      wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
++    }
++    uint32_t s1 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
++                                                          ((size_t)s[1] * 4));
++    if (s1) {
++      wuffs_base__poke_u24le__no_bounds_check(d + (1 * 3), s1);
++    }
++    uint32_t s2 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
++                                                          ((size_t)s[2] * 4));
++    if (s2) {
++      wuffs_base__poke_u24le__no_bounds_check(d + (2 * 3), s2);
++    }
++    uint32_t s3 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
++                                                          ((size_t)s[3] * 4));
++    if (s3) {
++      wuffs_base__poke_u24le__no_bounds_check(d + (3 * 3), s3);
+     }
+ 
+-    uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0;
+-    uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1;
+-    uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2;
+-    uint32_t src_len3 = ((end - x) + inv_h3 - 1u) / inv_h3;
+-    total_src_len0 += src_len0;
+-    total_src_len1 += src_len1;
+-    total_src_len2 += src_len2;
+-    total_src_len3 += src_len3;
+-
+-    const uint8_t* src_ptr_x0 = src0 + (x / inv_h0);
+-    const uint8_t* up0 = (*upfunc0)(          //
+-        scratch_buffer_2k_ptr + (0u * 480u),  //
+-        src_ptr_x0,                           //
+-        src_ptr_x0,                           //
+-        src_len0,                             //
+-        h1v2_bias,                            //
+-        first_column,                         //
+-        (total_src_len0 >= half_width_for_2to1));
+-
+-    const uint8_t* src_ptr_x1 = src1 + (x / inv_h1);
+-    const uint8_t* up1 = (*upfunc1)(          //
+-        scratch_buffer_2k_ptr + (1u * 480u),  //
+-        src_ptr_x1,                           //
+-        src_ptr_x1,                           //
+-        src_len1,                             //
+-        h1v2_bias,                            //
+-        first_column,                         //
+-        (total_src_len1 >= half_width_for_2to1));
+-
+-    const uint8_t* src_ptr_x2 = src2 + (x / inv_h2);
+-    const uint8_t* up2 = (*upfunc2)(          //
+-        scratch_buffer_2k_ptr + (2u * 480u),  //
+-        src_ptr_x2,                           //
+-        src_ptr_x2,                           //
+-        src_len2,                             //
+-        h1v2_bias,                            //
+-        first_column,                         //
+-        (total_src_len2 >= half_width_for_2to1));
++    s += loop_unroll_count * 1;
++    d += loop_unroll_count * 3;
++    n -= loop_unroll_count;
++  }
+ 
+-    const uint8_t* src_ptr_x3 = src3 + (x / inv_h3);
+-    const uint8_t* up3 = (*upfunc3)(          //
+-        scratch_buffer_2k_ptr + (3u * 480u),  //
+-        src_ptr_x3,                           //
+-        src_ptr_x3,                           //
+-        src_len3,                             //
+-        h1v2_bias,                            //
+-        first_column,                         //
+-        (total_src_len3 >= half_width_for_2to1));
++  while (n >= 1) {
++    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
++                                                          ((size_t)s[0] * 4));
++    if (s0) {
++      wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
++    }
+ 
+-    (*conv4func)(dst, x, end, y, up0, up1, up2, up3);
+-    x = end;
++    s += 1 * 1;
++    d += 1 * 3;
++    n -= 1;
+   }
+-}
+-
+-static void  //
+-wuffs_base__pixel_swizzler__swizzle_ycck__general__triangle_filter(
+-    wuffs_base__pixel_buffer* dst,
+-    uint32_t width,
+-    uint32_t height,
+-    const uint8_t* src_ptr0,
+-    const uint8_t* src_ptr1,
+-    const uint8_t* src_ptr2,
+-    const uint8_t* src_ptr3,
+-    uint32_t stride0,
+-    uint32_t stride1,
+-    uint32_t stride2,
+-    uint32_t stride3,
+-    uint32_t inv_h0,
+-    uint32_t inv_h1,
+-    uint32_t inv_h2,
+-    uint32_t inv_h3,
+-    uint32_t inv_v0,
+-    uint32_t inv_v1,
+-    uint32_t inv_v2,
+-    uint32_t inv_v3,
+-    uint32_t half_width_for_2to1,
+-    uint32_t half_height_for_2to1,
+-    uint8_t* scratch_buffer_2k_ptr,
+-    wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func (*upfuncs)[4][4],
+-    wuffs_base__pixel_swizzler__swizzle_ycc__convert_4_func conv4func) {
+-  wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc0 =
+-      (*upfuncs)[(inv_h0 - 1u) & 3u][(inv_v0 - 1u) & 3u];
+-  wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc1 =
+-      (*upfuncs)[(inv_h1 - 1u) & 3u][(inv_v1 - 1u) & 3u];
+-  wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc2 =
+-      (*upfuncs)[(inv_h2 - 1u) & 3u][(inv_v2 - 1u) & 3u];
+-  wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc3 =
+-      (*upfuncs)[(inv_h3 - 1u) & 3u][(inv_v3 - 1u) & 3u];
+ 
+-  // First row.
+-  uint32_t h1v2_bias = 1u;
+-  wuffs_base__pixel_swizzler__swizzle_ycck__general__triangle_filter_edge_row(
+-      dst, width, 0u,                          //
+-      src_ptr0, src_ptr1, src_ptr2, src_ptr3,  //
+-      stride0, stride1, stride2, stride3,      //
+-      inv_h0, inv_h1, inv_h2, inv_h3,          //
+-      inv_v0, inv_v1, inv_v2, inv_v3,          //
+-      half_width_for_2to1,                     //
+-      h1v2_bias,                               //
+-      scratch_buffer_2k_ptr,                   //
+-      upfunc0, upfunc1, upfunc2, upfunc3, conv4func);
+-  h1v2_bias = 2u;
++  return len;
++}
+ 
+-  // Middle rows.
+-  bool last_row = height == 2u * half_height_for_2to1;
+-  uint32_t y_max_excl = last_row ? (height - 1u) : height;
+-  uint32_t y;
+-  for (y = 1u; y < y_max_excl; y++) {
+-    const uint8_t* src0_major = src_ptr0 + ((y / inv_v0) * (size_t)stride0);
+-    const uint8_t* src0_minor =
+-        (inv_v0 != 2u)
+-            ? src0_major
+-            : ((y & 1u) ? (src0_major + stride0) : (src0_major - stride0));
+-    const uint8_t* src1_major = src_ptr1 + ((y / inv_v1) * (size_t)stride1);
+-    const uint8_t* src1_minor =
+-        (inv_v1 != 2u)
+-            ? src1_major
+-            : ((y & 1u) ? (src1_major + stride1) : (src1_major - stride1));
+-    const uint8_t* src2_major = src_ptr2 + ((y / inv_v2) * (size_t)stride2);
+-    const uint8_t* src2_minor =
+-        (inv_v2 != 2u)
+-            ? src2_major
+-            : ((y & 1u) ? (src2_major + stride2) : (src2_major - stride2));
+-    const uint8_t* src3_major = src_ptr3 + ((y / inv_v3) * (size_t)stride3);
+-    const uint8_t* src3_minor =
+-        (inv_v3 != 2u)
+-            ? src3_major
+-            : ((y & 1u) ? (src3_major + stride3) : (src3_major - stride3));
+-    uint32_t total_src_len0 = 0u;
+-    uint32_t total_src_len1 = 0u;
+-    uint32_t total_src_len2 = 0u;
+-    uint32_t total_src_len3 = 0u;
++static uint64_t  //
++wuffs_private_impl__swizzle_xxx__xxxx(uint8_t* dst_ptr,
++                                      size_t dst_len,
++                                      uint8_t* dst_palette_ptr,
++                                      size_t dst_palette_len,
++                                      const uint8_t* src_ptr,
++                                      size_t src_len) {
++  size_t dst_len3 = dst_len / 3;
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    uint32_t x = 0u;
+-    while (x < width) {
+-      bool first_column = x == 0u;
+-      uint32_t end = x + 480u;
+-      if (end > width) {
+-        end = width;
+-      }
++  // TODO: unroll.
+ 
+-      uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0;
+-      uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1;
+-      uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2;
+-      uint32_t src_len3 = ((end - x) + inv_h3 - 1u) / inv_h3;
+-      total_src_len0 += src_len0;
+-      total_src_len1 += src_len1;
+-      total_src_len2 += src_len2;
+-      total_src_len3 += src_len3;
++  while (n >= 1) {
++    wuffs_base__poke_u24le__no_bounds_check(
++        d + (0 * 3), wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
+ 
+-      const uint8_t* up0 = (*upfunc0)(          //
+-          scratch_buffer_2k_ptr + (0u * 480u),  //
+-          src0_major + (x / inv_h0),            //
+-          src0_minor + (x / inv_h0),            //
+-          src_len0,                             //
+-          h1v2_bias,                            //
+-          first_column,                         //
+-          (total_src_len0 >= half_width_for_2to1));
++    s += 1 * 4;
++    d += 1 * 3;
++    n -= 1;
++  }
+ 
+-      const uint8_t* up1 = (*upfunc1)(          //
+-          scratch_buffer_2k_ptr + (1u * 480u),  //
+-          src1_major + (x / inv_h1),            //
+-          src1_minor + (x / inv_h1),            //
+-          src_len1,                             //
+-          h1v2_bias,                            //
+-          first_column,                         //
+-          (total_src_len1 >= half_width_for_2to1));
++  return len;
++}
+ 
+-      const uint8_t* up2 = (*upfunc2)(          //
+-          scratch_buffer_2k_ptr + (2u * 480u),  //
+-          src2_major + (x / inv_h2),            //
+-          src2_minor + (x / inv_h2),            //
+-          src_len2,                             //
+-          h1v2_bias,                            //
+-          first_column,                         //
+-          (total_src_len2 >= half_width_for_2to1));
++static uint64_t  //
++wuffs_private_impl__swizzle_xxx__y(uint8_t* dst_ptr,
++                                   size_t dst_len,
++                                   uint8_t* dst_palette_ptr,
++                                   size_t dst_palette_len,
++                                   const uint8_t* src_ptr,
++                                   size_t src_len) {
++  size_t dst_len3 = dst_len / 3;
++  size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-      const uint8_t* up3 = (*upfunc3)(          //
+-          scratch_buffer_2k_ptr + (3u * 480u),  //
+-          src3_major + (x / inv_h3),            //
+-          src3_minor + (x / inv_h3),            //
+-          src_len3,                             //
+-          h1v2_bias,                            //
+-          first_column,                         //
+-          (total_src_len3 >= half_width_for_2to1));
++  // TODO: unroll.
+ 
+-      (*conv4func)(dst, x, end, y, up0, up1, up2, up3);
+-      x = end;
+-    }
++  while (n >= 1) {
++    uint8_t s0 = s[0];
++    d[0] = s0;
++    d[1] = s0;
++    d[2] = s0;
+ 
+-    h1v2_bias ^= 3u;
++    s += 1 * 1;
++    d += 1 * 3;
++    n -= 1;
+   }
+ 
+-  // Last row.
+-  if (y_max_excl != height) {
+-    wuffs_base__pixel_swizzler__swizzle_ycck__general__triangle_filter_edge_row(
+-        dst, width, height - 1u,                 //
+-        src_ptr0, src_ptr1, src_ptr2, src_ptr3,  //
+-        stride0, stride1, stride2, stride3,      //
+-        inv_h0, inv_h1, inv_h2, inv_h3,          //
+-        inv_v0, inv_v1, inv_v2, inv_v3,          //
+-        half_width_for_2to1,                     //
+-        h1v2_bias,                               //
+-        scratch_buffer_2k_ptr,                   //
+-        upfunc0, upfunc1, upfunc2, upfunc3, conv4func);
+-  }
++  return len;
+ }
+ 
+-static void  //
+-wuffs_base__pixel_swizzler__swizzle_ycc__general__triangle_filter_edge_row(
+-    wuffs_base__pixel_buffer* dst,
+-    uint32_t width,
+-    uint32_t y,
+-    const uint8_t* src_ptr0,
+-    const uint8_t* src_ptr1,
+-    const uint8_t* src_ptr2,
+-    uint32_t stride0,
+-    uint32_t stride1,
+-    uint32_t stride2,
+-    uint32_t inv_h0,
+-    uint32_t inv_h1,
+-    uint32_t inv_h2,
+-    uint32_t inv_v0,
+-    uint32_t inv_v1,
+-    uint32_t inv_v2,
+-    uint32_t half_width_for_2to1,
+-    uint32_t h1v2_bias,
+-    uint8_t* scratch_buffer_2k_ptr,
+-    wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc0,
+-    wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc1,
+-    wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc2,
+-    wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_func conv3func) {
+-  const uint8_t* src0 = src_ptr0 + ((y / inv_v0) * (size_t)stride0);
+-  const uint8_t* src1 = src_ptr1 + ((y / inv_v1) * (size_t)stride1);
+-  const uint8_t* src2 = src_ptr2 + ((y / inv_v2) * (size_t)stride2);
+-  uint32_t total_src_len0 = 0u;
+-  uint32_t total_src_len1 = 0u;
+-  uint32_t total_src_len2 = 0u;
+-
+-  uint32_t x = 0u;
+-  while (x < width) {
+-    bool first_column = x == 0u;
+-    uint32_t end = x + 672u;
+-    if (end > width) {
+-      end = width;
+-    }
+-
+-    uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0;
+-    uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1;
+-    uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2;
+-    total_src_len0 += src_len0;
+-    total_src_len1 += src_len1;
+-    total_src_len2 += src_len2;
+-
+-    const uint8_t* src_ptr_x0 = src0 + (x / inv_h0);
+-    const uint8_t* up0 = (*upfunc0)(          //
+-        scratch_buffer_2k_ptr + (0u * 672u),  //
+-        src_ptr_x0,                           //
+-        src_ptr_x0,                           //
+-        src_len0,                             //
+-        h1v2_bias,                            //
+-        first_column,                         //
+-        (total_src_len0 >= half_width_for_2to1));
++static uint64_t  //
++wuffs_private_impl__swizzle_xxx__y_16be(uint8_t* dst_ptr,
++                                        size_t dst_len,
++                                        uint8_t* dst_palette_ptr,
++                                        size_t dst_palette_len,
++                                        const uint8_t* src_ptr,
++                                        size_t src_len) {
++  size_t dst_len3 = dst_len / 3;
++  size_t src_len2 = src_len / 2;
++  size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    const uint8_t* src_ptr_x1 = src1 + (x / inv_h1);
+-    const uint8_t* up1 = (*upfunc1)(          //
+-        scratch_buffer_2k_ptr + (1u * 672u),  //
+-        src_ptr_x1,                           //
+-        src_ptr_x1,                           //
+-        src_len1,                             //
+-        h1v2_bias,                            //
+-        first_column,                         //
+-        (total_src_len1 >= half_width_for_2to1));
++  // TODO: unroll.
+ 
+-    const uint8_t* src_ptr_x2 = src2 + (x / inv_h2);
+-    const uint8_t* up2 = (*upfunc2)(          //
+-        scratch_buffer_2k_ptr + (2u * 672u),  //
+-        src_ptr_x2,                           //
+-        src_ptr_x2,                           //
+-        src_len2,                             //
+-        h1v2_bias,                            //
+-        first_column,                         //
+-        (total_src_len2 >= half_width_for_2to1));
++  while (n >= 1) {
++    uint8_t s0 = s[0];
++    d[0] = s0;
++    d[1] = s0;
++    d[2] = s0;
+ 
+-    (*conv3func)(dst, x, end, y, up0, up1, up2);
+-    x = end;
++    s += 1 * 2;
++    d += 1 * 3;
++    n -= 1;
+   }
+-}
+ 
+-static void  //
+-wuffs_base__pixel_swizzler__swizzle_ycc__general__triangle_filter(
+-    wuffs_base__pixel_buffer* dst,
+-    uint32_t width,
+-    uint32_t height,
+-    const uint8_t* src_ptr0,
+-    const uint8_t* src_ptr1,
+-    const uint8_t* src_ptr2,
+-    uint32_t stride0,
+-    uint32_t stride1,
+-    uint32_t stride2,
+-    uint32_t inv_h0,
+-    uint32_t inv_h1,
+-    uint32_t inv_h2,
+-    uint32_t inv_v0,
+-    uint32_t inv_v1,
+-    uint32_t inv_v2,
+-    uint32_t half_width_for_2to1,
+-    uint32_t half_height_for_2to1,
+-    uint8_t* scratch_buffer_2k_ptr,
+-    wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func (*upfuncs)[4][4],
+-    wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_func conv3func) {
+-  wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc0 =
+-      (*upfuncs)[(inv_h0 - 1u) & 3u][(inv_v0 - 1u) & 3u];
+-  wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc1 =
+-      (*upfuncs)[(inv_h1 - 1u) & 3u][(inv_v1 - 1u) & 3u];
+-  wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc2 =
+-      (*upfuncs)[(inv_h2 - 1u) & 3u][(inv_v2 - 1u) & 3u];
++  return len;
++}
+ 
+-  // First row.
+-  uint32_t h1v2_bias = 1u;
+-  wuffs_base__pixel_swizzler__swizzle_ycc__general__triangle_filter_edge_row(
+-      dst, width, 0u,                //
+-      src_ptr0, src_ptr1, src_ptr2,  //
+-      stride0, stride1, stride2,     //
+-      inv_h0, inv_h1, inv_h2,        //
+-      inv_v0, inv_v1, inv_v2,        //
+-      half_width_for_2to1,           //
+-      h1v2_bias,                     //
+-      scratch_buffer_2k_ptr,         //
+-      upfunc0, upfunc1, upfunc2, conv3func);
+-  h1v2_bias = 2u;
++static uint64_t  //
++wuffs_private_impl__swizzle_xxx__ya_nonpremul__src(uint8_t* dst_ptr,
++                                                   size_t dst_len,
++                                                   uint8_t* dst_palette_ptr,
++                                                   size_t dst_palette_len,
++                                                   const uint8_t* src_ptr,
++                                                   size_t src_len) {
++  size_t dst_len3 = dst_len / 3;
++  size_t src_len2 = src_len / 2;
++  size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-  // Middle rows.
+-  bool last_row = height == 2u * half_height_for_2to1;
+-  uint32_t y_max_excl = last_row ? (height - 1u) : height;
+-  uint32_t y;
+-  for (y = 1u; y < y_max_excl; y++) {
+-    const uint8_t* src0_major = src_ptr0 + ((y / inv_v0) * (size_t)stride0);
+-    const uint8_t* src0_minor =
+-        (inv_v0 != 2u)
+-            ? src0_major
+-            : ((y & 1u) ? (src0_major + stride0) : (src0_major - stride0));
+-    const uint8_t* src1_major = src_ptr1 + ((y / inv_v1) * (size_t)stride1);
+-    const uint8_t* src1_minor =
+-        (inv_v1 != 2u)
+-            ? src1_major
+-            : ((y & 1u) ? (src1_major + stride1) : (src1_major - stride1));
+-    const uint8_t* src2_major = src_ptr2 + ((y / inv_v2) * (size_t)stride2);
+-    const uint8_t* src2_minor =
+-        (inv_v2 != 2u)
+-            ? src2_major
+-            : ((y & 1u) ? (src2_major + stride2) : (src2_major - stride2));
+-    uint32_t total_src_len0 = 0u;
+-    uint32_t total_src_len1 = 0u;
+-    uint32_t total_src_len2 = 0u;
++  // TODO: unroll.
+ 
+-    uint32_t x = 0u;
+-    while (x < width) {
+-      bool first_column = x == 0u;
+-      uint32_t end = x + 672u;
+-      if (end > width) {
+-        end = width;
+-      }
++  while (n >= 1) {
++    uint32_t s0 = ((uint32_t)(s[1]) << 24) | ((uint32_t)(s[0]) * 0x010101);
++    wuffs_base__poke_u24le__no_bounds_check(
++        d + (0 * 3),
++        wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(s0));
+ 
+-      uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0;
+-      uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1;
+-      uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2;
+-      total_src_len0 += src_len0;
+-      total_src_len1 += src_len1;
+-      total_src_len2 += src_len2;
++    s += 1 * 2;
++    d += 1 * 3;
++    n -= 1;
++  }
+ 
+-      const uint8_t* up0 = (*upfunc0)(          //
+-          scratch_buffer_2k_ptr + (0u * 672u),  //
+-          src0_major + (x / inv_h0),            //
+-          src0_minor + (x / inv_h0),            //
+-          src_len0,                             //
+-          h1v2_bias,                            //
+-          first_column,                         //
+-          (total_src_len0 >= half_width_for_2to1));
++  return len;
++}
+ 
+-      const uint8_t* up1 = (*upfunc1)(          //
+-          scratch_buffer_2k_ptr + (1u * 672u),  //
+-          src1_major + (x / inv_h1),            //
+-          src1_minor + (x / inv_h1),            //
+-          src_len1,                             //
+-          h1v2_bias,                            //
+-          first_column,                         //
+-          (total_src_len1 >= half_width_for_2to1));
++static uint64_t  //
++wuffs_private_impl__swizzle_xxx__ya_nonpremul__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len3 = dst_len / 3;
++  size_t src_len2 = src_len / 2;
++  size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-      const uint8_t* up2 = (*upfunc2)(          //
+-          scratch_buffer_2k_ptr + (2u * 672u),  //
+-          src2_major + (x / inv_h2),            //
+-          src2_minor + (x / inv_h2),            //
+-          src_len2,                             //
+-          h1v2_bias,                            //
+-          first_column,                         //
+-          (total_src_len2 >= half_width_for_2to1));
++  // TODO: unroll.
+ 
+-      (*conv3func)(dst, x, end, y, up0, up1, up2);
+-      x = end;
+-    }
++  while (n >= 1) {
++    uint32_t d0 =
++        wuffs_base__peek_u24le__no_bounds_check(d + (0 * 3)) | 0xFF000000;
++    uint32_t s0 = ((uint32_t)(s[1]) << 24) | ((uint32_t)(s[0]) * 0x010101);
++    wuffs_base__poke_u24le__no_bounds_check(
++        d + (0 * 3),
++        wuffs_private_impl__composite_premul_nonpremul_u32_axxx(d0, s0));
+ 
+-    h1v2_bias ^= 3u;
++    s += 1 * 2;
++    d += 1 * 3;
++    n -= 1;
+   }
+ 
+-  // Last row.
+-  if (y_max_excl != height) {
+-    wuffs_base__pixel_swizzler__swizzle_ycc__general__triangle_filter_edge_row(
+-        dst, width, height - 1u,       //
+-        src_ptr0, src_ptr1, src_ptr2,  //
+-        stride0, stride1, stride2,     //
+-        inv_h0, inv_h1, inv_h2,        //
+-        inv_v0, inv_v1, inv_v2,        //
+-        half_width_for_2to1,           //
+-        h1v2_bias,                     //
+-        scratch_buffer_2k_ptr,         //
+-        upfunc0, upfunc1, upfunc2, conv3func);
+-  }
++  return len;
+ }
+ 
+-static void  //
+-wuffs_base__pixel_swizzler__swizzle_ycc__general__box_filter(
+-    wuffs_base__pixel_buffer* dst,
+-    uint32_t width,
+-    uint32_t height,
+-    const uint8_t* src_ptr0,
+-    const uint8_t* src_ptr1,
+-    const uint8_t* src_ptr2,
+-    uint32_t stride0,
+-    uint32_t stride1,
+-    uint32_t stride2,
+-    uint32_t inv_h0,
+-    uint32_t inv_h1,
+-    uint32_t inv_h2,
+-    uint32_t inv_v0,
+-    uint32_t inv_v1,
+-    uint32_t inv_v2,
+-    uint32_t half_width_for_2to1,
+-    uint32_t half_height_for_2to1,
+-    uint8_t* scratch_buffer_2k_ptr,
+-    wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func (*upfuncs)[4][4],
+-    wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_func conv3func) {
+-  wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc0 =
+-      (*upfuncs)[(inv_h0 - 1u) & 3u][(inv_v0 - 1u) & 3u];
+-  wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc1 =
+-      (*upfuncs)[(inv_h1 - 1u) & 3u][(inv_v1 - 1u) & 3u];
+-  wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc2 =
+-      (*upfuncs)[(inv_h2 - 1u) & 3u][(inv_v2 - 1u) & 3u];
+-
+-  uint32_t y;
+-  for (y = 0u; y < height; y++) {
+-    const uint8_t* src0_major = src_ptr0 + ((y / inv_v0) * (size_t)stride0);
+-    const uint8_t* src1_major = src_ptr1 + ((y / inv_v1) * (size_t)stride1);
+-    const uint8_t* src2_major = src_ptr2 + ((y / inv_v2) * (size_t)stride2);
++// --------
+ 
+-    uint32_t x = 0u;
+-    while (x < width) {
+-      uint32_t end = x + 672u;
+-      if (end > width) {
+-        end = width;
+-      }
++static uint64_t  //
++wuffs_private_impl__swizzle_xxxx__index__src(uint8_t* dst_ptr,
++                                             size_t dst_len,
++                                             uint8_t* dst_palette_ptr,
++                                             size_t dst_palette_len,
++                                             const uint8_t* src_ptr,
++                                             size_t src_len) {
++  if (dst_palette_len !=
++      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
++    return 0;
++  }
++  size_t dst_len4 = dst_len / 4;
++  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-      uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0;
+-      uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1;
+-      uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2;
++  const size_t loop_unroll_count = 4;
+ 
+-      const uint8_t* up0 = (*upfunc0)(          //
+-          scratch_buffer_2k_ptr + (0u * 672u),  //
+-          src0_major + (x / inv_h0),            //
+-          src0_major + (x / inv_h0),            //
+-          src_len0,                             //
+-          0u, false, false);
++  while (n >= loop_unroll_count) {
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4), wuffs_base__peek_u32le__no_bounds_check(
++                         dst_palette_ptr + ((size_t)s[0] * 4)));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (1 * 4), wuffs_base__peek_u32le__no_bounds_check(
++                         dst_palette_ptr + ((size_t)s[1] * 4)));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (2 * 4), wuffs_base__peek_u32le__no_bounds_check(
++                         dst_palette_ptr + ((size_t)s[2] * 4)));
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (3 * 4), wuffs_base__peek_u32le__no_bounds_check(
++                         dst_palette_ptr + ((size_t)s[3] * 4)));
+ 
+-      const uint8_t* up1 = (*upfunc1)(          //
+-          scratch_buffer_2k_ptr + (1u * 672u),  //
+-          src1_major + (x / inv_h1),            //
+-          src1_major + (x / inv_h1),            //
+-          src_len1,                             //
+-          0u, false, false);
++    s += loop_unroll_count * 1;
++    d += loop_unroll_count * 4;
++    n -= loop_unroll_count;
++  }
+ 
+-      const uint8_t* up2 = (*upfunc2)(          //
+-          scratch_buffer_2k_ptr + (2u * 672u),  //
+-          src2_major + (x / inv_h2),            //
+-          src2_major + (x / inv_h2),            //
+-          src_len2,                             //
+-          0u, false, false);
++  while (n >= 1) {
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4), wuffs_base__peek_u32le__no_bounds_check(
++                         dst_palette_ptr + ((size_t)s[0] * 4)));
+ 
+-      (*conv3func)(dst, x, end, y, up0, up1, up2);
+-      x = end;
+-    }
++    s += 1 * 1;
++    d += 1 * 4;
++    n -= 1;
+   }
+-}
+ 
+-// --------
++  return len;
++}
+ 
+-// wuffs_base__pixel_swizzler__flattened_length is like
+-// wuffs_base__table__flattened_length but returns uint64_t (not size_t) and
+-// also accounts for subsampling.
+ static uint64_t  //
+-wuffs_base__pixel_swizzler__flattened_length(uint32_t width,
+-                                             uint32_t height,
+-                                             uint32_t stride,
+-                                             uint32_t inv_h,
+-                                             uint32_t inv_v) {
+-  uint64_t scaled_width = (((uint64_t)width) + (inv_h - 1u)) / inv_h;
+-  uint64_t scaled_height = (((uint64_t)height) + (inv_v - 1u)) / inv_v;
+-  if (scaled_height <= 0u) {
+-    return 0u;
++wuffs_private_impl__swizzle_xxxx__index_binary_alpha__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  if (dst_palette_len !=
++      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
++    return 0;
+   }
+-  return ((scaled_height - 1u) * stride) + scaled_width;
+-}
++  size_t dst_len4 = dst_len / 4;
++  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status  //
+-wuffs_base__pixel_swizzler__swizzle_ycck(
+-    const wuffs_base__pixel_swizzler* p,
+-    wuffs_base__pixel_buffer* dst,
+-    wuffs_base__slice_u8 dst_palette,
+-    uint32_t width,
+-    uint32_t height,
+-    wuffs_base__slice_u8 src0,
+-    wuffs_base__slice_u8 src1,
+-    wuffs_base__slice_u8 src2,
+-    wuffs_base__slice_u8 src3,
+-    uint32_t width0,
+-    uint32_t width1,
+-    uint32_t width2,
+-    uint32_t width3,
+-    uint32_t height0,
+-    uint32_t height1,
+-    uint32_t height2,
+-    uint32_t height3,
+-    uint32_t stride0,
+-    uint32_t stride1,
+-    uint32_t stride2,
+-    uint32_t stride3,
+-    uint8_t h0,
+-    uint8_t h1,
+-    uint8_t h2,
+-    uint8_t h3,
+-    uint8_t v0,
+-    uint8_t v1,
+-    uint8_t v2,
+-    uint8_t v3,
+-    bool is_rgb_or_cmyk,
+-    bool triangle_filter_for_2to1,
+-    wuffs_base__slice_u8 scratch_buffer_2k) {
+-  if (!p) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  } else if (!dst || (width > 0xFFFFu) || (height > 0xFFFFu) ||  //
+-             (4u <= ((unsigned int)h0 - 1u)) ||                  //
+-             (4u <= ((unsigned int)h1 - 1u)) ||                  //
+-             (4u <= ((unsigned int)h2 - 1u)) ||                  //
+-             (4u <= ((unsigned int)v0 - 1u)) ||                  //
+-             (4u <= ((unsigned int)v1 - 1u)) ||                  //
+-             (4u <= ((unsigned int)v2 - 1u)) ||                  //
+-             (scratch_buffer_2k.len < 2048u)) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  const size_t loop_unroll_count = 4;
++
++  while (n >= loop_unroll_count) {
++    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
++                                                          ((size_t)s[0] * 4));
++    if (s0) {
++      wuffs_base__poke_u32le__no_bounds_check(d + (0 * 4), s0);
++    }
++    uint32_t s1 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
++                                                          ((size_t)s[1] * 4));
++    if (s1) {
++      wuffs_base__poke_u32le__no_bounds_check(d + (1 * 4), s1);
++    }
++    uint32_t s2 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
++                                                          ((size_t)s[2] * 4));
++    if (s2) {
++      wuffs_base__poke_u32le__no_bounds_check(d + (2 * 4), s2);
++    }
++    uint32_t s3 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
++                                                          ((size_t)s[3] * 4));
++    if (s3) {
++      wuffs_base__poke_u32le__no_bounds_check(d + (3 * 4), s3);
++    }
++
++    s += loop_unroll_count * 1;
++    d += loop_unroll_count * 4;
++    n -= loop_unroll_count;
+   }
+-  if ((h3 != 0u) || (v3 != 0u)) {
+-    if ((4u <= ((unsigned int)h3 - 1u)) ||  //
+-        (4u <= ((unsigned int)v3 - 1u))) {
+-      return wuffs_base__make_status(wuffs_base__error__bad_argument);
++
++  while (n >= 1) {
++    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
++                                                          ((size_t)s[0] * 4));
++    if (s0) {
++      wuffs_base__poke_u32le__no_bounds_check(d + (0 * 4), s0);
+     }
++
++    s += 1 * 1;
++    d += 1 * 4;
++    n -= 1;
+   }
+ 
+-  uint32_t max_incl_h = wuffs_base__u32__max_of_4(h0, h1, h2, h3);
+-  uint32_t max_incl_v = wuffs_base__u32__max_of_4(v0, v1, v2, v3);
++  return len;
++}
+ 
+-  // Calculate the inverse h and v ratios.
+-  //
+-  // It also canonicalizes (h=2 and max_incl_h=4) as equivalent to (h=1 and
+-  // max_incl_h=2). In both cases, the inv_h value is 2.
+-  uint32_t inv_h0 = max_incl_h / h0;
+-  uint32_t inv_h1 = max_incl_h / h1;
+-  uint32_t inv_h2 = max_incl_h / h2;
+-  uint32_t inv_h3 = h3 ? (max_incl_h / h3) : 0u;
+-  uint32_t inv_v0 = max_incl_v / v0;
+-  uint32_t inv_v1 = max_incl_v / v1;
+-  uint32_t inv_v2 = max_incl_v / v2;
+-  uint32_t inv_v3 = v3 ? (max_incl_v / v3) : 0u;
++// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
++static uint64_t  //
++wuffs_private_impl__swizzle_xxxx__y__x86_sse42(uint8_t* dst_ptr,
++                                               size_t dst_len,
++                                               uint8_t* dst_palette_ptr,
++                                               size_t dst_palette_len,
++                                               const uint8_t* src_ptr,
++                                               size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-  uint32_t half_width_for_2to1 = (width + 1u) / 2u;
+-  uint32_t half_height_for_2to1 = (height + 1u) / 2u;
+-
+-  width = wuffs_base__u32__min_of_5(  //
+-      width,                          //
+-      width0 * inv_h0,                //
+-      width1 * inv_h1,                //
+-      width2 * inv_h2,                //
+-      wuffs_base__pixel_config__width(&dst->pixcfg));
+-  height = wuffs_base__u32__min_of_5(  //
+-      height,                          //
+-      height0 * inv_v0,                //
+-      height1 * inv_v1,                //
+-      height2 * inv_v2,                //
+-      wuffs_base__pixel_config__height(&dst->pixcfg));
++  __m128i shuffle = _mm_set_epi8(+0x03, +0x03, +0x03, +0x03,  //
++                                 +0x02, +0x02, +0x02, +0x02,  //
++                                 +0x01, +0x01, +0x01, +0x01,  //
++                                 +0x00, +0x00, +0x00, +0x00);
++  __m128i or_ff = _mm_set_epi8(-0x01, +0x00, +0x00, +0x00,  //
++                               -0x01, +0x00, +0x00, +0x00,  //
++                               -0x01, +0x00, +0x00, +0x00,  //
++                               -0x01, +0x00, +0x00, +0x00);
+ 
+-  if (((h0 * inv_h0) != max_incl_h) ||  //
+-      ((h1 * inv_h1) != max_incl_h) ||  //
+-      ((h2 * inv_h2) != max_incl_h) ||  //
+-      ((v0 * inv_v0) != max_incl_v) ||  //
+-      ((v1 * inv_v1) != max_incl_v) ||  //
+-      ((v2 * inv_v2) != max_incl_v) ||  //
+-      (src0.len < wuffs_base__pixel_swizzler__flattened_length(
+-                      width, height, stride0, inv_h0, inv_v0)) ||
+-      (src1.len < wuffs_base__pixel_swizzler__flattened_length(
+-                      width, height, stride1, inv_h1, inv_v1)) ||
+-      (src2.len < wuffs_base__pixel_swizzler__flattened_length(
+-                      width, height, stride2, inv_h2, inv_v2))) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  if ((h3 != 0u) || (v3 != 0u)) {
+-    if (((h3 * inv_h3) != max_incl_h) ||  //
+-        ((v3 * inv_v3) != max_incl_v) ||  //
+-        (src3.len < wuffs_base__pixel_swizzler__flattened_length(
+-                        width, height, stride3, inv_h3, inv_v3))) {
+-      return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-    }
+-  }
++  while (n >= 4) {
++    __m128i x;
++    x = _mm_cvtsi32_si128((int)(wuffs_base__peek_u32le__no_bounds_check(s)));
++    x = _mm_shuffle_epi8(x, shuffle);
++    x = _mm_or_si128(x, or_ff);
++    _mm_storeu_si128((__m128i*)(void*)d, x);
+ 
+-  if (wuffs_base__pixel_format__is_planar(&dst->pixcfg.private_impl.pixfmt)) {
+-    // TODO: see wuffs_base__pixel_buffer__set_color_u32_at's TODO.
+-    return wuffs_base__make_status(
+-        wuffs_base__error__unsupported_pixel_swizzler_option);
++    s += 4 * 1;
++    d += 4 * 4;
++    n -= 4;
+   }
+ 
+-  switch (dst->pixcfg.private_impl.pixfmt.repr) {
+-    case WUFFS_BASE__PIXEL_FORMAT__Y:
+-    case WUFFS_BASE__PIXEL_FORMAT__Y_16LE:
+-    case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
+-    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGR:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGB:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
+-    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
+-      break;
++  while (n >= 1) {
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0]));
+ 
+-    default:
+-      // TODO: see wuffs_base__pixel_buffer__set_color_u32_at's TODO.
+-      return wuffs_base__make_status(
+-          wuffs_base__error__unsupported_pixel_swizzler_option);
++    s += 1 * 1;
++    d += 1 * 4;
++    n -= 1;
+   }
+ 
+-  if ((width <= 0u) || (height <= 0u)) {
+-    return wuffs_base__make_status(NULL);
+-  }
++  return len;
++}
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
+ 
+-  wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_func conv3func = NULL;
++static uint64_t  //
++wuffs_private_impl__swizzle_xxxx__y(uint8_t* dst_ptr,
++                                    size_t dst_len,
++                                    uint8_t* dst_palette_ptr,
++                                    size_t dst_palette_len,
++                                    const uint8_t* src_ptr,
++                                    size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-  if (is_rgb_or_cmyk) {
+-    conv3func = &wuffs_base__pixel_swizzler__swizzle_rgb__convert_3_general;
+-  } else {
+-    switch (dst->pixcfg.private_impl.pixfmt.repr) {
+-      case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
+-      case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
+-      case WUFFS_BASE__PIXEL_FORMAT__BGRX:
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
+-        if (wuffs_base__cpu_arch__have_x86_avx2()) {
+-          conv3func =
+-              &wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_bgrx_x86_avx2;
+-          break;
+-        }
+-#endif
+-        conv3func = &wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_bgrx;
+-        break;
+-      case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
+-      case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
+-      case WUFFS_BASE__PIXEL_FORMAT__RGBX:
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
+-        if (wuffs_base__cpu_arch__have_x86_avx2()) {
+-          conv3func =
+-              &wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_rgbx_x86_avx2;
+-          break;
+-        }
+-#endif
+-        conv3func = &wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_rgbx;
+-        break;
+-      default:
+-        conv3func = &wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_general;
+-        break;
+-    }
++  while (n >= 1) {
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0]));
++
++    s += 1 * 1;
++    d += 1 * 4;
++    n -= 1;
+   }
+ 
+-  void (*func)(
+-      wuffs_base__pixel_buffer * dst,  //
+-      uint32_t width,                  //
+-      uint32_t height,                 //
+-      const uint8_t* src_ptr0,         //
+-      const uint8_t* src_ptr1,         //
+-      const uint8_t* src_ptr2,         //
+-      uint32_t stride0,                //
+-      uint32_t stride1,                //
+-      uint32_t stride2,                //
+-      uint32_t inv_h0,                 //
+-      uint32_t inv_h1,                 //
+-      uint32_t inv_h2,                 //
+-      uint32_t inv_v0,                 //
+-      uint32_t inv_v1,                 //
+-      uint32_t inv_v2,                 //
+-      uint32_t half_width_for_2to1,    //
+-      uint32_t half_height_for_2to1,   //
+-      uint8_t* scratch_buffer_2k_ptr,  //
+-      wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func(*upfuncs)[4][4],
+-      wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_func conv3func) =
+-      &wuffs_base__pixel_swizzler__swizzle_ycc__general__box_filter;
+-
+-  wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfuncs[4][4];
+-  memcpy(&upfuncs, &wuffs_base__pixel_swizzler__swizzle_ycc__upsample_funcs,
+-         sizeof upfuncs);
++  return len;
++}
+ 
+-  if (triangle_filter_for_2to1 &&
+-      (wuffs_base__pixel_swizzler__has_triangle_upsampler(inv_h0, inv_v0) ||
+-       wuffs_base__pixel_swizzler__has_triangle_upsampler(inv_h1, inv_v1) ||
+-       wuffs_base__pixel_swizzler__has_triangle_upsampler(inv_h2, inv_v2))) {
+-    func = &wuffs_base__pixel_swizzler__swizzle_ycc__general__triangle_filter;
+-
+-    upfuncs[0][1] =
+-        wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1v2_triangle;
+-    upfuncs[1][0] =
+-        wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v1_triangle;
+-    upfuncs[1][1] =
+-        wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v2_triangle;
+-
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
+-#if defined(__GNUC__) && !defined(__clang__)
+-    // Don't use our AVX2 implementation for GCC (but do use it for clang). For
+-    // some unknown reason, GCC performs noticably better on the non-SIMD
+-    // version. Possibly because GCC's auto-vectorizer is smarter (just with
+-    // SSE2, not AVX2) than our hand-written code, but that's just a guess.
+-    //
+-    // See commits 51bc60ef9298cb2efc1b29a9681191f66d49820d and
+-    // cd769a0cdf1b5affee13f6089b995f3d39569cb4 for benchmark numbers.
+-    //
+-    // See also https://godbolt.org/z/MbhbPGEz4 for Debian Bullseye's clang 11
+-    // versus gcc 10, where only gcc auto-vectorizes, although later clang
+-    // versions will also auto-vectorize.
+-#else
+-    if (wuffs_base__cpu_arch__have_x86_avx2()) {
+-      upfuncs[1][1] =
+-          wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v2_triangle_x86_avx2;
+-    }
+-#endif
+-#endif
+-  }
++static uint64_t  //
++wuffs_private_impl__swizzle_xxxx__y_16be(uint8_t* dst_ptr,
++                                         size_t dst_len,
++                                         uint8_t* dst_palette_ptr,
++                                         size_t dst_palette_len,
++                                         const uint8_t* src_ptr,
++                                         size_t src_len) {
++  size_t dst_len4 = dst_len / 4;
++  size_t src_len2 = src_len / 2;
++  size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-  if ((h3 != 0u) || (v3 != 0u)) {
+-    wuffs_base__pixel_swizzler__swizzle_ycc__convert_4_func conv4func =
+-        is_rgb_or_cmyk
+-            ? &wuffs_base__pixel_swizzler__swizzle_cmyk__convert_4_general
+-            : &wuffs_base__pixel_swizzler__swizzle_ycck__convert_4_general;
+-    wuffs_base__pixel_swizzler__swizzle_ycck__general__triangle_filter(  //
+-        dst, width, height,                                              //
+-        src0.ptr, src1.ptr, src2.ptr, src3.ptr,                          //
+-        stride0, stride1, stride2, stride3,                              //
+-        inv_h0, inv_h1, inv_h2, inv_h3,                                  //
+-        inv_v0, inv_v1, inv_v2, inv_v3,                                  //
+-        half_width_for_2to1, half_height_for_2to1,                       //
+-        scratch_buffer_2k.ptr, &upfuncs, conv4func);
++  while (n >= 1) {
++    wuffs_base__poke_u32le__no_bounds_check(
++        d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0]));
+ 
+-  } else {
+-    (*func)(                                        //
+-        dst, width, height,                         //
+-        src0.ptr, src1.ptr, src2.ptr,               //
+-        stride0, stride1, stride2,                  //
+-        inv_h0, inv_h1, inv_h2,                     //
+-        inv_v0, inv_v1, inv_v2,                     //
+-        half_width_for_2to1, half_height_for_2to1,  //
+-        scratch_buffer_2k.ptr, &upfuncs, conv3func);
++    s += 1 * 2;
++    d += 1 * 4;
++    n -= 1;
+   }
+ 
+-  return wuffs_base__make_status(NULL);
++  return len;
+ }
+ 
+ // --------
+ 
+-// ‼ WUFFS MULTI-FILE SECTION +x86_avx2
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
+-WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
+-static void  //
+-wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_bgrx_x86_avx2(
+-    wuffs_base__pixel_buffer* dst,
+-    uint32_t x,
+-    uint32_t x_end,
+-    uint32_t y,
+-    const uint8_t* up0,
+-    const uint8_t* up1,
+-    const uint8_t* up2) {
+-  if ((x + 32u) > x_end) {
+-    wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_bgrx(  //
+-        dst, x, x_end, y, up0, up1, up2);
+-    return;
++static uint64_t  //
++wuffs_private_impl__swizzle_xxxxxxxx__index__src(uint8_t* dst_ptr,
++                                                 size_t dst_len,
++                                                 uint8_t* dst_palette_ptr,
++                                                 size_t dst_palette_len,
++                                                 const uint8_t* src_ptr,
++                                                 size_t src_len) {
++  if (dst_palette_len !=
++      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
++    return 0;
+   }
++  size_t dst_len8 = dst_len / 8;
++  size_t len = (dst_len8 < src_len) ? dst_len8 : src_len;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-  size_t dst_stride = dst->private_impl.planes[0].stride;
+-  uint8_t* dst_iter = dst->private_impl.planes[0].ptr +
+-                      (dst_stride * ((size_t)y)) + (4u * ((size_t)x));
+-
+-  // u0001 = u16x16 [0x0001 .. 0x0001]
+-  // u00FF = u16x16 [0x00FF .. 0x00FF]
+-  // uFF80 = u16x16 [0xFF80 .. 0xFF80]
+-  // uFFFF = u16x16 [0xFFFF .. 0xFFFF]
+-  const __m256i u0001 = _mm256_set1_epi16(+0x0001);
+-  const __m256i u00FF = _mm256_set1_epi16(+0x00FF);
+-  const __m256i uFF80 = _mm256_set1_epi16(-0x0080);
+-  const __m256i uFFFF = _mm256_set1_epi16(-0x0001);
++  while (n >= 1) {
++    wuffs_base__poke_u64le__no_bounds_check(
++        d + (0 * 8), wuffs_base__color_u32__as__color_u64(
++                         wuffs_base__peek_u32le__no_bounds_check(
++                             dst_palette_ptr + ((size_t)s[0] * 4))));
+ 
+-  // p8000_p0000 = u16x16 [0x8000 0x0000 .. 0x8000 0x0000]
+-  const __m256i p8000_p0000 = _mm256_set_epi16(  //
+-      +0x0000, -0x8000, +0x0000, -0x8000,        //
+-      +0x0000, -0x8000, +0x0000, -0x8000,        //
+-      +0x0000, -0x8000, +0x0000, -0x8000,        //
+-      +0x0000, -0x8000, +0x0000, -0x8000);
++    s += 1 * 1;
++    d += 1 * 8;
++    n -= 1;
++  }
+ 
+-  // Per wuffs_base__color_ycc__as__color_u32, the formulae:
+-  //
+-  //  R = Y                + 1.40200 * Cr
+-  //  G = Y - 0.34414 * Cb - 0.71414 * Cr
+-  //  B = Y + 1.77200 * Cb
+-  //
+-  // When scaled by 1<<16:
+-  //
+-  //  0.34414 becomes 0x0581A =  22554.
+-  //  0.71414 becomes 0x0B6D2 =  46802.
+-  //  1.40200 becomes 0x166E9 =  91881.
+-  //  1.77200 becomes 0x1C5A2 = 116130.
+-  //
+-  // Separate the integer and fractional parts, since we work with signed
+-  // 16-bit SIMD lanes. The fractional parts range from -0.5 .. +0.5 (as
+-  // floating-point) which is from -0x8000 .. +0x8000 (as fixed-point).
+-  //
+-  //  -0x3A5E = -0x20000 + 0x1C5A2     The B:Cb factor.
+-  //  +0x66E9 = -0x10000 + 0x166E9     The R:Cr factor.
+-  //  -0x581A = +0x00000 - 0x0581A     The G:Cb factor.
+-  //  +0x492E = +0x10000 - 0x0B6D2     The G:Cr factor.
+-  const __m256i m3A5E = _mm256_set1_epi16(-0x3A5E);
+-  const __m256i p66E9 = _mm256_set1_epi16(+0x66E9);
+-  const __m256i m581A_p492E = _mm256_set_epi16(  //
+-      +0x492E, -0x581A, +0x492E, -0x581A,        //
+-      +0x492E, -0x581A, +0x492E, -0x581A,        //
+-      +0x492E, -0x581A, +0x492E, -0x581A,        //
+-      +0x492E, -0x581A, +0x492E, -0x581A);
++  return len;
++}
+ 
+-  while (x < x_end) {
+-    // Load chroma values in even and odd columns (the high 8 bits of each
+-    // u16x16 element are zero) and then subtract 0x0080.
+-    //
+-    // cb_all = u8x32  [cb.00 cb.01 cb.02 cb.03 .. cb.1C cb.1D cb.1E cb.1F]
+-    // cb_eve = i16x16 [cb.00-0x80  cb.02-0x80  .. cb.1C-0x80  cb.1E-0x80 ]
+-    // cb_odd = i16x16 [cb.01-0x80  cb.03-0x80  .. cb.1D-0x80  cb.1F-0x80 ]
+-    //
+-    // Ditto for the cr_xxx Chroma-Red values.
+-    __m256i cb_all = _mm256_lddqu_si256((const __m256i*)(const void*)up1);
+-    __m256i cr_all = _mm256_lddqu_si256((const __m256i*)(const void*)up2);
+-    __m256i cb_eve = _mm256_add_epi16(uFF80, _mm256_and_si256(cb_all, u00FF));
+-    __m256i cr_eve = _mm256_add_epi16(uFF80, _mm256_and_si256(cr_all, u00FF));
+-    __m256i cb_odd = _mm256_add_epi16(uFF80, _mm256_srli_epi16(cb_all, 8));
+-    __m256i cr_odd = _mm256_add_epi16(uFF80, _mm256_srli_epi16(cr_all, 8));
++static uint64_t  //
++wuffs_private_impl__swizzle_xxxxxxxx__index_binary_alpha__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  if (dst_palette_len !=
++      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
++    return 0;
++  }
++  size_t dst_len8 = dst_len / 8;
++  size_t len = (dst_len8 < src_len) ? dst_len8 : src_len;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    // ----
++  while (n >= 1) {
++    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
++                                                          ((size_t)s[0] * 4));
++    if (s0) {
++      wuffs_base__poke_u64le__no_bounds_check(
++          d + (0 * 8), wuffs_base__color_u32__as__color_u64(s0));
++    }
+ 
+-    // Calculate:
+-    //
+-    //  B-Y = (+1.77200 * Cb)                 as floating-point
+-    //  R-Y = (+1.40200 * Cr)                 as floating-point
+-    //
+-    //  B-Y = ((0x2_0000 - 0x3A5E) * Cb)      as fixed-point
+-    //  R-Y = ((0x1_0000 + 0x66E9) * Cr)      as fixed-point
+-    //
+-    //  B-Y = ((-0x3A5E * Cb) + ("2.0" * Cb))
+-    //  R-Y = ((+0x66E9 * Cr) + ("1.0" * Cr))
++    s += 1 * 1;
++    d += 1 * 8;
++    n -= 1;
++  }
+ 
+-    // Multiply by m3A5E or p66E9, taking the high 16 bits. There's also a
+-    // doubling (add x to itself), adding-of-1 and halving (shift right by 1).
+-    // That makes multiply-and-take-high round to nearest (instead of down).
+-    __m256i tmp_by_eve = _mm256_srai_epi16(
+-        _mm256_add_epi16(
+-            _mm256_mulhi_epi16(_mm256_add_epi16(cb_eve, cb_eve), m3A5E), u0001),
+-        1);
+-    __m256i tmp_by_odd = _mm256_srai_epi16(
+-        _mm256_add_epi16(
+-            _mm256_mulhi_epi16(_mm256_add_epi16(cb_odd, cb_odd), m3A5E), u0001),
+-        1);
+-    __m256i tmp_ry_eve = _mm256_srai_epi16(
+-        _mm256_add_epi16(
+-            _mm256_mulhi_epi16(_mm256_add_epi16(cr_eve, cr_eve), p66E9), u0001),
+-        1);
+-    __m256i tmp_ry_odd = _mm256_srai_epi16(
+-        _mm256_add_epi16(
+-            _mm256_mulhi_epi16(_mm256_add_epi16(cr_odd, cr_odd), p66E9), u0001),
+-        1);
++  return len;
++}
+ 
+-    // Add (2 * Cb) and (1 * Cr).
+-    __m256i by_eve =
+-        _mm256_add_epi16(tmp_by_eve, _mm256_add_epi16(cb_eve, cb_eve));
+-    __m256i by_odd =
+-        _mm256_add_epi16(tmp_by_odd, _mm256_add_epi16(cb_odd, cb_odd));
+-    __m256i ry_eve = _mm256_add_epi16(tmp_ry_eve, cr_eve);
+-    __m256i ry_odd = _mm256_add_epi16(tmp_ry_odd, cr_odd);
++static uint64_t  //
++wuffs_private_impl__swizzle_xxxxxxxx__y(uint8_t* dst_ptr,
++                                        size_t dst_len,
++                                        uint8_t* dst_palette_ptr,
++                                        size_t dst_palette_len,
++                                        const uint8_t* src_ptr,
++                                        size_t src_len) {
++  size_t dst_len8 = dst_len / 8;
++  size_t len = (dst_len8 < src_len) ? dst_len8 : src_len;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    // ----
++  while (n >= 1) {
++    wuffs_base__poke_u64le__no_bounds_check(
++        d + (0 * 8), 0xFFFF000000000000 | (0x010101010101 * (uint64_t)s[0]));
+ 
+-    // Calculate:
+-    //
+-    //  G-Y = (-0.34414 * Cb) +
+-    //        (-0.71414 * Cr)                 as floating-point
+-    //
+-    //  G-Y = ((+0x0_0000 - 0x581A) * Cb) +
+-    //        ((-0x1_0000 + 0x492E) * Cr)     as fixed-point
+-    //
+-    //  G-Y =  (-0x581A * Cb) +
+-    //         (+0x492E * Cr) - ("1.0" * Cr)
++    s += 1 * 1;
++    d += 1 * 8;
++    n -= 1;
++  }
+ 
+-    // Multiply-add to get ((-0x581A * Cb) + (+0x492E * Cr)).
+-    __m256i tmp0_gy_eve_lo = _mm256_madd_epi16(  //
+-        _mm256_unpacklo_epi16(cb_eve, cr_eve), m581A_p492E);
+-    __m256i tmp0_gy_eve_hi = _mm256_madd_epi16(  //
+-        _mm256_unpackhi_epi16(cb_eve, cr_eve), m581A_p492E);
+-    __m256i tmp0_gy_odd_lo = _mm256_madd_epi16(  //
+-        _mm256_unpacklo_epi16(cb_odd, cr_odd), m581A_p492E);
+-    __m256i tmp0_gy_odd_hi = _mm256_madd_epi16(  //
+-        _mm256_unpackhi_epi16(cb_odd, cr_odd), m581A_p492E);
++  return len;
++}
+ 
+-    // Divide the i32x8 vectors by (1 << 16), rounding to nearest.
+-    __m256i tmp1_gy_eve_lo =
+-        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_eve_lo, p8000_p0000), 16);
+-    __m256i tmp1_gy_eve_hi =
+-        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_eve_hi, p8000_p0000), 16);
+-    __m256i tmp1_gy_odd_lo =
+-        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_odd_lo, p8000_p0000), 16);
+-    __m256i tmp1_gy_odd_hi =
+-        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_odd_hi, p8000_p0000), 16);
++static uint64_t  //
++wuffs_private_impl__swizzle_xxxxxxxx__y_16be(uint8_t* dst_ptr,
++                                             size_t dst_len,
++                                             uint8_t* dst_palette_ptr,
++                                             size_t dst_palette_len,
++                                             const uint8_t* src_ptr,
++                                             size_t src_len) {
++  size_t dst_len8 = dst_len / 8;
++  size_t src_len2 = src_len / 2;
++  size_t len = (dst_len8 < src_len2) ? dst_len8 : src_len2;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    // Pack the ((-0x581A * Cb) + (+0x492E * Cr)) as i16x16 and subtract Cr.
+-    __m256i gy_eve = _mm256_sub_epi16(
+-        _mm256_packs_epi32(tmp1_gy_eve_lo, tmp1_gy_eve_hi), cr_eve);
+-    __m256i gy_odd = _mm256_sub_epi16(
+-        _mm256_packs_epi32(tmp1_gy_odd_lo, tmp1_gy_odd_hi), cr_odd);
++  while (n >= 1) {
++    uint64_t s0 =
++        ((uint64_t)(wuffs_base__peek_u16be__no_bounds_check(s + (0 * 2))));
++    wuffs_base__poke_u64le__no_bounds_check(
++        d + (0 * 8), 0xFFFF000000000000 | (0x000100010001 * s0));
+ 
+-    // ----
++    s += 1 * 2;
++    d += 1 * 8;
++    n -= 1;
++  }
+ 
+-    // Add Y to (B-Y), (G-Y) and (R-Y) to produce B, G and R.
+-    //
+-    // For the resultant packed_x_xxx vectors, only elements 0 ..= 7 and 16 ..=
+-    // 23 of the 32-element vectors matter (since we'll unpacklo but not
+-    // unpackhi them). Let … denote 8 ignored consecutive u8 values and let %
+-    // denote 0xFF. We'll end this section with:
+-    //
+-    // packed_b_eve = u8x32 [b00 b02 .. b0C b0E  …  b10 b12 .. b1C b1E  …]
+-    // packed_b_odd = u8x32 [b01 b03 .. b0D b0F  …  b11 b13 .. b1D b1F  …]
+-    // packed_g_eve = u8x32 [g00 g02 .. g0C g0E  …  g10 g12 .. g1C g1E  …]
+-    // packed_g_odd = u8x32 [g01 g03 .. g0D g0F  …  g11 g13 .. g1D g1F  …]
+-    // packed_r_eve = u8x32 [r00 r02 .. r0C r0E  …  r10 r12 .. r1C r1E  …]
+-    // packed_r_odd = u8x32 [r01 r03 .. r0D r0F  …  r11 r13 .. r1D r1F  …]
+-    // uFFFF        = u8x32 [  %   % ..   %   %  …    %   % ..   %   %  …]
++  return len;
++}
+ 
+-    __m256i yy_all = _mm256_lddqu_si256((const __m256i*)(const void*)up0);
+-    __m256i yy_eve = _mm256_and_si256(yy_all, u00FF);
+-    __m256i yy_odd = _mm256_srli_epi16(yy_all, 8);
++// --------
+ 
+-    __m256i loose_b_eve = _mm256_add_epi16(by_eve, yy_eve);
+-    __m256i loose_b_odd = _mm256_add_epi16(by_odd, yy_odd);
+-    __m256i packed_b_eve = _mm256_packus_epi16(loose_b_eve, loose_b_eve);
+-    __m256i packed_b_odd = _mm256_packus_epi16(loose_b_odd, loose_b_odd);
++static uint64_t  //
++wuffs_private_impl__swizzle_y__bgra_nonpremul__src(uint8_t* dst_ptr,
++                                                   size_t dst_len,
++                                                   uint8_t* dst_palette_ptr,
++                                                   size_t dst_palette_len,
++                                                   const uint8_t* src_ptr,
++                                                   size_t src_len) {
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len < src_len4) ? dst_len : src_len4;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    __m256i loose_g_eve = _mm256_add_epi16(gy_eve, yy_eve);
+-    __m256i loose_g_odd = _mm256_add_epi16(gy_odd, yy_odd);
+-    __m256i packed_g_eve = _mm256_packus_epi16(loose_g_eve, loose_g_eve);
+-    __m256i packed_g_odd = _mm256_packus_epi16(loose_g_odd, loose_g_odd);
++  while (n >= 1) {
++    uint32_t s0 =
++        wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
++            wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
++    d[0] = wuffs_base__color_u32_argb_premul__as__color_u8_gray(s0);
+ 
+-    __m256i loose_r_eve = _mm256_add_epi16(ry_eve, yy_eve);
+-    __m256i loose_r_odd = _mm256_add_epi16(ry_odd, yy_odd);
+-    __m256i packed_r_eve = _mm256_packus_epi16(loose_r_eve, loose_r_eve);
+-    __m256i packed_r_odd = _mm256_packus_epi16(loose_r_odd, loose_r_odd);
++    s += 1 * 4;
++    d += 1 * 1;
++    n -= 1;
++  }
+ 
+-    // ----
++  return len;
++}
+ 
+-    // Mix those values (unpacking in 8, 16 and then 32 bit units) to get the
+-    // desired BGRX/RGBX order.
+-    //
+-    // From here onwards, all of our __m256i registers are u8x32.
++static uint64_t  //
++wuffs_private_impl__swizzle_y__bgra_nonpremul__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len < src_len4) ? dst_len : src_len4;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    // mix00 = [b00 g00 b02 g02 .. b0E g0E b10 g10 .. b1C g1C b1E g1E]
+-    // mix01 = [b01 g01 b03 g03 .. b0F g0F b11 g11 .. b1D g1D b1F g1F]
+-    // mix02 = [r00   % r02   % .. r0E   % r10   % .. r1C   % r1E   %]
+-    // mix03 = [r01   % r03   % .. r0F   % r11   % .. r1D   % r1F   %]
+-    //
+-    // See also § below.
+-    __m256i mix00 = _mm256_unpacklo_epi8(packed_b_eve, packed_g_eve);
+-    __m256i mix01 = _mm256_unpacklo_epi8(packed_b_odd, packed_g_odd);
+-    __m256i mix02 = _mm256_unpacklo_epi8(packed_r_eve, uFFFF);
+-    __m256i mix03 = _mm256_unpacklo_epi8(packed_r_odd, uFFFF);
++  while (n >= 1) {
++    uint32_t d0 = 0xFF000000 | (0x00010101 * ((uint32_t)(d[0])));
++    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
++    d[0] = wuffs_base__color_u32_argb_premul__as__color_u8_gray(
++        wuffs_private_impl__composite_premul_nonpremul_u32_axxx(d0, s0));
+ 
+-    // mix10 = [b00 g00 r00 %  b02 g02 r02 %  b04 g04 r04 %  b06 g06 r06 %
+-    //          b10 g10 r10 %  b12 g12 r12 %  b14 g14 r14 %  b16 g16 r16 %]
+-    // mix11 = [b01 g01 r01 %  b03 g03 r03 %  b05 g05 r05 %  b07 g07 r07 %
+-    //          b11 g11 r11 %  b13 g13 r13 %  b15 g15 r15 %  b17 g17 r17 %]
+-    // mix12 = [b08 g08 r08 %  b0A g0A r0A %  b0C g0C r0C %  b0E g0E r0E %
+-    //          b18 g18 r18 %  b1A g1A r1A %  b1C g1C r1C %  b1E g1E r1E %]
+-    // mix13 = [b09 g09 r09 %  b0B g0B r0B %  b0D g0D r0D %  b0F g0F r0F %
+-    //          b19 g19 r19 %  b1B g1B r1B %  b1D g1D r1D %  b1F g1F r1F %]
+-    __m256i mix10 = _mm256_unpacklo_epi16(mix00, mix02);
+-    __m256i mix11 = _mm256_unpacklo_epi16(mix01, mix03);
+-    __m256i mix12 = _mm256_unpackhi_epi16(mix00, mix02);
+-    __m256i mix13 = _mm256_unpackhi_epi16(mix01, mix03);
++    s += 1 * 4;
++    d += 1 * 1;
++    n -= 1;
++  }
+ 
+-    // mix20 = [b00 g00 r00 %  b01 g01 r01 %  b02 g02 r02 %  b03 g03 r03 %
+-    //          b10 g10 r10 %  b11 g11 r11 %  b12 g12 r12 %  b13 g13 r13 %]
+-    // mix21 = [b04 g04 r04 %  b05 g05 r05 %  b06 g06 r06 %  b07 g07 r07 %
+-    //          b14 g14 r14 %  b15 g15 r15 %  b16 g16 r16 %  b17 g17 r17 %]
+-    // mix22 = [b08 g08 r08 %  b09 g09 r09 %  b0A g0A r0A %  b0B g0B r0B %
+-    //          b18 g18 r18 %  b19 g19 r19 %  b1A g1A r1A %  b1B g1B r1B %]
+-    // mix23 = [b0C g0C r0C %  b0D g0D r0D %  b0E g0E r0E %  b0F g0F r0F %
+-    //          b1C g1C r1C %  b1D g1D r1D %  b1E g1E r1E %  b1F g1F r1F %]
+-    __m256i mix20 = _mm256_unpacklo_epi32(mix10, mix11);
+-    __m256i mix21 = _mm256_unpackhi_epi32(mix10, mix11);
+-    __m256i mix22 = _mm256_unpacklo_epi32(mix12, mix13);
+-    __m256i mix23 = _mm256_unpackhi_epi32(mix12, mix13);
++  return len;
++}
+ 
+-    // mix30 = [b00 g00 r00 %  b01 g01 r01 %  b02 g02 r02 %  b03 g03 r03 %
+-    //          b04 g04 r04 %  b05 g05 r05 %  b06 g06 r06 %  b07 g07 r07 %]
+-    // mix31 = [b08 g08 r08 %  b09 g09 r09 %  b0A g0A r0A %  b0B g0B r0B %
+-    //          b0C g0C r0C %  b0D g0D r0D %  b0E g0E r0E %  b0F g0F r0F %]
+-    // mix32 = [b10 g10 r10 %  b11 g11 r11 %  b12 g12 r12 %  b13 g13 r13 %
+-    //          b14 g14 r14 %  b15 g15 r15 %  b16 g16 r16 %  b17 g17 r17 %]
+-    // mix33 = [b18 g18 r18 %  b19 g19 r19 %  b1A g1A r1A %  b1B g1B r1B %
+-    //          b1C g1C r1C %  b1D g1D r1D %  b1E g1E r1E %  b1F g1F r1F %]
+-    __m256i mix30 = _mm256_permute2x128_si256(mix20, mix21, 0x20);
+-    __m256i mix31 = _mm256_permute2x128_si256(mix22, mix23, 0x20);
+-    __m256i mix32 = _mm256_permute2x128_si256(mix20, mix21, 0x31);
+-    __m256i mix33 = _mm256_permute2x128_si256(mix22, mix23, 0x31);
++static uint64_t  //
++wuffs_private_impl__swizzle_y__bgrx(uint8_t* dst_ptr,
++                                    size_t dst_len,
++                                    uint8_t* dst_palette_ptr,
++                                    size_t dst_palette_len,
++                                    const uint8_t* src_ptr,
++                                    size_t src_len) {
++  size_t src_len4 = src_len / 4;
++  size_t len = (dst_len < src_len4) ? dst_len : src_len4;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    // Write out four u8x32 SIMD registers (128 bytes, 32 BGRX/RGBX pixels).
+-    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x00), mix30);
+-    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x20), mix31);
+-    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x40), mix32);
+-    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x60), mix33);
++  while (n >= 1) {
++    uint32_t s0 =
++        0xFF000000 | wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
++    d[0] = wuffs_base__color_u32_argb_premul__as__color_u8_gray(s0);
+ 
+-    // Advance by up to 32 pixels. The first iteration might be smaller than 32
+-    // so that all of the remaining steps are exactly 32.
+-    uint32_t n = 32u - (31u & (x - x_end));
+-    dst_iter += 4u * n;
+-    up0 += n;
+-    up1 += n;
+-    up2 += n;
+-    x += n;
++    s += 1 * 4;
++    d += 1 * 1;
++    n -= 1;
+   }
++
++  return len;
+ }
+ 
+-// The rgbx flavor (below) is exactly the same as the bgrx flavor (above)
+-// except for the lines marked with a § and that comments were stripped.
+-WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
+-static void  //
+-wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_rgbx_x86_avx2(
+-    wuffs_base__pixel_buffer* dst,
+-    uint32_t x,
+-    uint32_t x_end,
+-    uint32_t y,
+-    const uint8_t* up0,
+-    const uint8_t* up1,
+-    const uint8_t* up2) {
+-  if ((x + 32u) > x_end) {
+-    wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_bgrx(  //
+-        dst, x, x_end, y, up0, up1, up2);
+-    return;
+-  }
++static uint64_t  //
++wuffs_private_impl__swizzle_y__y_16be(uint8_t* dst_ptr,
++                                      size_t dst_len,
++                                      uint8_t* dst_palette_ptr,
++                                      size_t dst_palette_len,
++                                      const uint8_t* src_ptr,
++                                      size_t src_len) {
++  size_t src_len2 = src_len / 2;
++  size_t len = (dst_len < src_len2) ? dst_len : src_len2;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-  size_t dst_stride = dst->private_impl.planes[0].stride;
+-  uint8_t* dst_iter = dst->private_impl.planes[0].ptr +
+-                      (dst_stride * ((size_t)y)) + (4u * ((size_t)x));
++  while (n >= 1) {
++    d[0] = s[0];
+ 
+-  const __m256i u0001 = _mm256_set1_epi16(+0x0001);
+-  const __m256i u00FF = _mm256_set1_epi16(+0x00FF);
+-  const __m256i uFF80 = _mm256_set1_epi16(-0x0080);
+-  const __m256i uFFFF = _mm256_set1_epi16(-0x0001);
++    s += 1 * 2;
++    d += 1 * 1;
++    n -= 1;
++  }
+ 
+-  const __m256i p8000_p0000 = _mm256_set_epi16(  //
+-      +0x0000, -0x8000, +0x0000, -0x8000,        //
+-      +0x0000, -0x8000, +0x0000, -0x8000,        //
+-      +0x0000, -0x8000, +0x0000, -0x8000,        //
+-      +0x0000, -0x8000, +0x0000, -0x8000);
++  return len;
++}
+ 
+-  const __m256i m3A5E = _mm256_set1_epi16(-0x3A5E);
+-  const __m256i p66E9 = _mm256_set1_epi16(+0x66E9);
+-  const __m256i m581A_p492E = _mm256_set_epi16(  //
+-      +0x492E, -0x581A, +0x492E, -0x581A,        //
+-      +0x492E, -0x581A, +0x492E, -0x581A,        //
+-      +0x492E, -0x581A, +0x492E, -0x581A,        //
+-      +0x492E, -0x581A, +0x492E, -0x581A);
++static uint64_t  //
++wuffs_private_impl__swizzle_y_16le__y_16be(uint8_t* dst_ptr,
++                                           size_t dst_len,
++                                           uint8_t* dst_palette_ptr,
++                                           size_t dst_palette_len,
++                                           const uint8_t* src_ptr,
++                                           size_t src_len) {
++  size_t dst_len2 = dst_len / 2;
++  size_t src_len2 = src_len / 2;
++  size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-  while (x < x_end) {
+-    __m256i cb_all = _mm256_lddqu_si256((const __m256i*)(const void*)up1);
+-    __m256i cr_all = _mm256_lddqu_si256((const __m256i*)(const void*)up2);
+-    __m256i cb_eve = _mm256_add_epi16(uFF80, _mm256_and_si256(cb_all, u00FF));
+-    __m256i cr_eve = _mm256_add_epi16(uFF80, _mm256_and_si256(cr_all, u00FF));
+-    __m256i cb_odd = _mm256_add_epi16(uFF80, _mm256_srli_epi16(cb_all, 8));
+-    __m256i cr_odd = _mm256_add_epi16(uFF80, _mm256_srli_epi16(cr_all, 8));
++  while (n >= 1) {
++    uint8_t s0 = s[0];
++    uint8_t s1 = s[1];
++    d[0] = s1;
++    d[1] = s0;
+ 
+-    __m256i tmp_by_eve = _mm256_srai_epi16(
+-        _mm256_add_epi16(
+-            _mm256_mulhi_epi16(_mm256_add_epi16(cb_eve, cb_eve), m3A5E), u0001),
+-        1);
+-    __m256i tmp_by_odd = _mm256_srai_epi16(
+-        _mm256_add_epi16(
+-            _mm256_mulhi_epi16(_mm256_add_epi16(cb_odd, cb_odd), m3A5E), u0001),
+-        1);
+-    __m256i tmp_ry_eve = _mm256_srai_epi16(
+-        _mm256_add_epi16(
+-            _mm256_mulhi_epi16(_mm256_add_epi16(cr_eve, cr_eve), p66E9), u0001),
+-        1);
+-    __m256i tmp_ry_odd = _mm256_srai_epi16(
+-        _mm256_add_epi16(
+-            _mm256_mulhi_epi16(_mm256_add_epi16(cr_odd, cr_odd), p66E9), u0001),
+-        1);
++    s += 1 * 2;
++    d += 1 * 2;
++    n -= 1;
++  }
+ 
+-    __m256i by_eve =
+-        _mm256_add_epi16(tmp_by_eve, _mm256_add_epi16(cb_eve, cb_eve));
+-    __m256i by_odd =
+-        _mm256_add_epi16(tmp_by_odd, _mm256_add_epi16(cb_odd, cb_odd));
+-    __m256i ry_eve = _mm256_add_epi16(tmp_ry_eve, cr_eve);
+-    __m256i ry_odd = _mm256_add_epi16(tmp_ry_odd, cr_odd);
++  return len;
++}
+ 
+-    __m256i tmp0_gy_eve_lo = _mm256_madd_epi16(  //
+-        _mm256_unpacklo_epi16(cb_eve, cr_eve), m581A_p492E);
+-    __m256i tmp0_gy_eve_hi = _mm256_madd_epi16(  //
+-        _mm256_unpackhi_epi16(cb_eve, cr_eve), m581A_p492E);
+-    __m256i tmp0_gy_odd_lo = _mm256_madd_epi16(  //
+-        _mm256_unpacklo_epi16(cb_odd, cr_odd), m581A_p492E);
+-    __m256i tmp0_gy_odd_hi = _mm256_madd_epi16(  //
+-        _mm256_unpackhi_epi16(cb_odd, cr_odd), m581A_p492E);
++// --------
+ 
+-    __m256i tmp1_gy_eve_lo =
+-        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_eve_lo, p8000_p0000), 16);
+-    __m256i tmp1_gy_eve_hi =
+-        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_eve_hi, p8000_p0000), 16);
+-    __m256i tmp1_gy_odd_lo =
+-        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_odd_lo, p8000_p0000), 16);
+-    __m256i tmp1_gy_odd_hi =
+-        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_odd_hi, p8000_p0000), 16);
++static uint64_t  //
++wuffs_private_impl__swizzle_ya_nonpremul__ya_nonpremul__src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    const uint8_t* src_ptr,
++    size_t src_len) {
++  size_t dst_len2 = dst_len / 2;
++  size_t src_len2 = src_len / 2;
++  size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2;
++  uint8_t* d = dst_ptr;
++  const uint8_t* s = src_ptr;
++  size_t n = len;
+ 
+-    __m256i gy_eve = _mm256_sub_epi16(
+-        _mm256_packs_epi32(tmp1_gy_eve_lo, tmp1_gy_eve_hi), cr_eve);
+-    __m256i gy_odd = _mm256_sub_epi16(
+-        _mm256_packs_epi32(tmp1_gy_odd_lo, tmp1_gy_odd_hi), cr_odd);
++  while (n >= 1) {
++    uint32_t d0 = ((uint32_t)(d[1]) << 24) | ((uint32_t)(d[0]) * 0x010101);
++    uint32_t s0 = ((uint32_t)(s[1]) << 24) | ((uint32_t)(s[0]) * 0x010101);
++    uint32_t c0 =
++        wuffs_private_impl__composite_nonpremul_nonpremul_u32_axxx(d0, s0);
++    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)(c0 >> 16));
+ 
+-    __m256i yy_all = _mm256_lddqu_si256((const __m256i*)(const void*)up0);
+-    __m256i yy_eve = _mm256_and_si256(yy_all, u00FF);
+-    __m256i yy_odd = _mm256_srli_epi16(yy_all, 8);
++    s += 1 * 2;
++    d += 1 * 2;
++    n -= 1;
++  }
+ 
+-    __m256i loose_b_eve = _mm256_add_epi16(by_eve, yy_eve);
+-    __m256i loose_b_odd = _mm256_add_epi16(by_odd, yy_odd);
+-    __m256i packed_b_eve = _mm256_packus_epi16(loose_b_eve, loose_b_eve);
+-    __m256i packed_b_odd = _mm256_packus_epi16(loose_b_odd, loose_b_odd);
++  return len;
++}
+ 
+-    __m256i loose_g_eve = _mm256_add_epi16(gy_eve, yy_eve);
+-    __m256i loose_g_odd = _mm256_add_epi16(gy_odd, yy_odd);
+-    __m256i packed_g_eve = _mm256_packus_epi16(loose_g_eve, loose_g_eve);
+-    __m256i packed_g_odd = _mm256_packus_epi16(loose_g_odd, loose_g_odd);
++// --------
+ 
+-    __m256i loose_r_eve = _mm256_add_epi16(ry_eve, yy_eve);
+-    __m256i loose_r_odd = _mm256_add_epi16(ry_odd, yy_odd);
+-    __m256i packed_r_eve = _mm256_packus_epi16(loose_r_eve, loose_r_eve);
+-    __m256i packed_r_odd = _mm256_packus_epi16(loose_r_odd, loose_r_odd);
++static uint64_t  //
++wuffs_private_impl__swizzle_transparent_black_src(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    uint64_t num_pixels,
++    uint32_t dst_pixfmt_bytes_per_pixel) {
++  uint64_t n = ((uint64_t)dst_len) / dst_pixfmt_bytes_per_pixel;
++  if (n > num_pixels) {
++    n = num_pixels;
++  }
++  memset(dst_ptr, 0, ((size_t)(n * dst_pixfmt_bytes_per_pixel)));
++  return n;
++}
+ 
+-    // § Note the swapped B and R channels.
+-    __m256i mix00 = _mm256_unpacklo_epi8(packed_r_eve, packed_g_eve);
+-    __m256i mix01 = _mm256_unpacklo_epi8(packed_r_odd, packed_g_odd);
+-    __m256i mix02 = _mm256_unpacklo_epi8(packed_b_eve, uFFFF);
+-    __m256i mix03 = _mm256_unpacklo_epi8(packed_b_odd, uFFFF);
++static uint64_t  //
++wuffs_private_impl__swizzle_transparent_black_src_over(
++    uint8_t* dst_ptr,
++    size_t dst_len,
++    uint8_t* dst_palette_ptr,
++    size_t dst_palette_len,
++    uint64_t num_pixels,
++    uint32_t dst_pixfmt_bytes_per_pixel) {
++  uint64_t n = ((uint64_t)dst_len) / dst_pixfmt_bytes_per_pixel;
++  if (n > num_pixels) {
++    n = num_pixels;
++  }
++  return n;
++}
+ 
+-    __m256i mix10 = _mm256_unpacklo_epi16(mix00, mix02);
+-    __m256i mix11 = _mm256_unpacklo_epi16(mix01, mix03);
+-    __m256i mix12 = _mm256_unpackhi_epi16(mix00, mix02);
+-    __m256i mix13 = _mm256_unpackhi_epi16(mix01, mix03);
++// --------
+ 
+-    __m256i mix20 = _mm256_unpacklo_epi32(mix10, mix11);
+-    __m256i mix21 = _mm256_unpackhi_epi32(mix10, mix11);
+-    __m256i mix22 = _mm256_unpacklo_epi32(mix12, mix13);
+-    __m256i mix23 = _mm256_unpackhi_epi32(mix12, mix13);
++static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
++wuffs_private_impl__pixel_swizzler__prepare__y(
++    wuffs_base__pixel_swizzler* p,
++    wuffs_base__pixel_format dst_pixfmt,
++    wuffs_base__slice_u8 dst_palette,
++    wuffs_base__slice_u8 src_palette,
++    wuffs_base__pixel_blend blend) {
++  switch (dst_pixfmt.repr) {
++    case WUFFS_BASE__PIXEL_FORMAT__Y:
++      return wuffs_private_impl__swizzle_copy_1_1;
+ 
+-    __m256i mix30 = _mm256_permute2x128_si256(mix20, mix21, 0x20);
+-    __m256i mix31 = _mm256_permute2x128_si256(mix22, mix23, 0x20);
+-    __m256i mix32 = _mm256_permute2x128_si256(mix20, mix21, 0x31);
+-    __m256i mix33 = _mm256_permute2x128_si256(mix22, mix23, 0x31);
++    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
++      return wuffs_private_impl__swizzle_bgr_565__y;
+ 
+-    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x00), mix30);
+-    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x20), mix31);
+-    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x40), mix32);
+-    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x60), mix33);
++    case WUFFS_BASE__PIXEL_FORMAT__BGR:
++    case WUFFS_BASE__PIXEL_FORMAT__RGB:
++      return wuffs_private_impl__swizzle_xxx__y;
+ 
+-    uint32_t n = 32u - (31u & (x - x_end));
+-    dst_iter += 4u * n;
+-    up0 += n;
+-    up1 += n;
+-    up2 += n;
+-    x += n;
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++      if (wuffs_base__cpu_arch__have_x86_sse42()) {
++        return wuffs_private_impl__swizzle_xxxx__y__x86_sse42;
++      }
++#endif
++      return wuffs_private_impl__swizzle_xxxx__y;
++
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE:
++      return wuffs_private_impl__swizzle_xxxxxxxx__y;
+   }
++  return NULL;
+ }
+ 
+-#if defined(__GNUC__) && !defined(__clang__)
+-// No-op.
+-#else
+-WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
+-static const uint8_t*  //
+-wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v2_triangle_x86_avx2(
+-    uint8_t* dst_ptr,
+-    const uint8_t* src_ptr_major,
+-    const uint8_t* src_ptr_minor,
+-    size_t src_len,
+-    uint32_t h1v2_bias_ignored,
+-    bool first_column,
+-    bool last_column) {
+-  uint8_t* dp = dst_ptr;
+-  const uint8_t* sp_major = src_ptr_major;
+-  const uint8_t* sp_minor = src_ptr_minor;
+-
+-  if (first_column) {
+-    src_len--;
+-    if ((src_len <= 0u) && last_column) {
+-      uint32_t sv = (12u * ((uint32_t)(*sp_major++))) +  //
+-                    (4u * ((uint32_t)(*sp_minor++)));
+-      *dp++ = (uint8_t)((sv + 8u) >> 4u);
+-      *dp++ = (uint8_t)((sv + 7u) >> 4u);
+-      return dst_ptr;
+-    }
+-
+-    uint32_t sv_major_m1 = sp_major[-0];  // Clamp offset to zero.
+-    uint32_t sv_minor_m1 = sp_minor[-0];  // Clamp offset to zero.
+-    uint32_t sv_major_p1 = sp_major[+1];
+-    uint32_t sv_minor_p1 = sp_minor[+1];
+-
+-    uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
+-                  (3u * ((uint32_t)(*sp_minor++)));
+-    *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
+-    *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
+-    if (src_len <= 0u) {
+-      return dst_ptr;
+-    }
+-  }
+-
+-  if (last_column) {
+-    src_len--;
+-  }
+-
+-  if (src_len < 32) {
+-    // This fallback is the same as the non-SIMD-capable code path.
+-    for (; src_len > 0u; src_len--) {
+-      uint32_t sv_major_m1 = sp_major[-1];
+-      uint32_t sv_minor_m1 = sp_minor[-1];
+-      uint32_t sv_major_p1 = sp_major[+1];
+-      uint32_t sv_minor_p1 = sp_minor[+1];
+-
+-      uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
+-                    (3u * ((uint32_t)(*sp_minor++)));
+-      *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
+-      *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
+-    }
+-
+-  } else {
+-    while (src_len > 0u) {
+-      // Load 1+32+1 samples (six u8x32 vectors) from the major (jxx) and minor
+-      // (nxx) rows.
+-      //
+-      // major_p0 = [j00 j01 j02 j03 .. j28 j29 j30 j31]   // p0 = "plus  0"
+-      // minor_p0 = [n00 n01 n02 n03 .. n28 n29 n30 n31]   // p0 = "plus  0"
+-      // major_m1 = [jm1 j00 j01 j02 .. j27 j28 j29 j30]   // m1 = "minus 1"
+-      // minor_m1 = [nm1 n00 n01 n02 .. n27 n28 n29 n30]   // m1 = "minus 1"
+-      // major_p1 = [j01 j02 j03 j04 .. j29 j30 j31 j32]   // p1 = "plus  1"
+-      // minor_p1 = [n01 n02 n03 n04 .. n29 n30 n31 n32]   // p1 = "plus  1"
+-      __m256i major_p0 =
+-          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_major + 0));
+-      __m256i minor_p0 =
+-          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_minor + 0));
+-      __m256i major_m1 =
+-          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_major - 1));
+-      __m256i minor_m1 =
+-          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_minor - 1));
+-      __m256i major_p1 =
+-          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_major + 1));
+-      __m256i minor_p1 =
+-          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_minor + 1));
+-
+-      // Unpack, staying with u8x32 vectors.
+-      //
+-      // step1_p0_lo = [j00 n00 j01 n01 .. j07 n07  j16 n16 j17 n17 .. j23 n23]
+-      // step1_p0_hi = [j08 n08 j09 n09 .. j15 n15  j24 n24 j25 n25 .. j31 n31]
+-      // step1_m1_lo = [jm1 nm1 j00 n00 .. j06 n06  j15 n15 j16 n16 .. j22 n22]
+-      // step1_m1_hi = [j07 n07 j08 n08 .. j14 n14  j23 n23 j24 n24 .. j30 n30]
+-      // step1_p1_lo = [j01 n01 j02 n02 .. j08 n08  j17 n17 j18 n18 .. j24 n24]
+-      // step1_p1_hi = [j09 n09 j10 n10 .. j16 n16  j25 n25 j26 n26 .. j32 n32]
+-      __m256i step1_p0_lo = _mm256_unpacklo_epi8(major_p0, minor_p0);
+-      __m256i step1_p0_hi = _mm256_unpackhi_epi8(major_p0, minor_p0);
+-      __m256i step1_m1_lo = _mm256_unpacklo_epi8(major_m1, minor_m1);
+-      __m256i step1_m1_hi = _mm256_unpackhi_epi8(major_m1, minor_m1);
+-      __m256i step1_p1_lo = _mm256_unpacklo_epi8(major_p1, minor_p1);
+-      __m256i step1_p1_hi = _mm256_unpackhi_epi8(major_p1, minor_p1);
+-
+-      // Multiply-add to get u16x16 vectors.
+-      //
+-      // step2_p0_lo = [9*j00+3*n00 9*j01+3*n01 .. 9*j23+3*n23]
+-      // step2_p0_hi = [9*j08+3*n08 9*j09+3*n09 .. 9*j31+3*n31]
+-      // step2_m1_lo = [3*jm1+1*nm1 3*j00+1*n00 .. 3*j22+1*n22]
+-      // step2_m1_hi = [3*j07+1*n07 3*j08+1*n08 .. 3*j30+1*n30]
+-      // step2_p1_lo = [3*j01+1*n01 3*j02+1*n02 .. 3*j24+1*n24]
+-      // step2_p1_hi = [3*j09+1*n09 3*j10+1*n10 .. 3*j32+1*n32]
+-      const __m256i k0309 = _mm256_set1_epi16(0x0309);
+-      const __m256i k0103 = _mm256_set1_epi16(0x0103);
+-      __m256i step2_p0_lo = _mm256_maddubs_epi16(step1_p0_lo, k0309);
+-      __m256i step2_p0_hi = _mm256_maddubs_epi16(step1_p0_hi, k0309);
+-      __m256i step2_m1_lo = _mm256_maddubs_epi16(step1_m1_lo, k0103);
+-      __m256i step2_m1_hi = _mm256_maddubs_epi16(step1_m1_hi, k0103);
+-      __m256i step2_p1_lo = _mm256_maddubs_epi16(step1_p1_lo, k0103);
+-      __m256i step2_p1_hi = _mm256_maddubs_epi16(step1_p1_hi, k0103);
+-
+-      // Compute the weighted sums of (p0, m1) and (p0, p1). For example:
+-      //
+-      // step3_m1_lo[00] = ((9*j00) + (3*n00) + (3*jm1) + (1*nm1)) as u16
+-      // step3_p1_hi[15] = ((9*j31) + (3*n31) + (3*j32) + (1*n32)) as u16
+-      __m256i step3_m1_lo = _mm256_add_epi16(step2_p0_lo, step2_m1_lo);
+-      __m256i step3_m1_hi = _mm256_add_epi16(step2_p0_hi, step2_m1_hi);
+-      __m256i step3_p1_lo = _mm256_add_epi16(step2_p0_lo, step2_p1_lo);
+-      __m256i step3_p1_hi = _mm256_add_epi16(step2_p0_hi, step2_p1_hi);
++static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
++wuffs_private_impl__pixel_swizzler__prepare__y_16be(
++    wuffs_base__pixel_swizzler* p,
++    wuffs_base__pixel_format dst_pixfmt,
++    wuffs_base__slice_u8 dst_palette,
++    wuffs_base__slice_u8 src_palette,
++    wuffs_base__pixel_blend blend) {
++  switch (dst_pixfmt.repr) {
++    case WUFFS_BASE__PIXEL_FORMAT__Y:
++      return wuffs_private_impl__swizzle_y__y_16be;
+ 
+-      // Bias by 8 (on the left) or 7 (on the right) and then divide by 16
+-      // (which is 9+3+3+1) to get a weighted average. On the left (m1), shift
+-      // the u16 right value by 4. On the right (p1), shift right by 4 and then
+-      // shift left by 8 so that, when still in the u16x16 little-endian
+-      // interpretation, we have:
+-      //  - m1_element =  (etcetera + 8) >> 4
+-      //  - p1_element = ((etcetera + 7) >> 4) << 8
+-      //
+-      // step4_m1_lo = [0x00?? 0x00?? ... 0x00?? 0x00??]
+-      // step4_p1_lo = [0x??00 0x??00 ... 0x??00 0x??00]
+-      // step4_m1_hi = [0x00?? 0x00?? ... 0x00?? 0x00??]
+-      // step4_p1_hi = [0x??00 0x??00 ... 0x??00 0x??00]
+-      __m256i step4_m1_lo = _mm256_srli_epi16(
+-          _mm256_add_epi16(step3_m1_lo, _mm256_set1_epi16(8)), 4);
+-      __m256i step4_p1_lo = _mm256_slli_epi16(
+-          _mm256_srli_epi16(_mm256_add_epi16(step3_p1_lo, _mm256_set1_epi16(7)),
+-                            4),
+-          8);
+-      __m256i step4_m1_hi = _mm256_srli_epi16(
+-          _mm256_add_epi16(step3_m1_hi, _mm256_set1_epi16(8)), 4);
+-      __m256i step4_p1_hi = _mm256_slli_epi16(
+-          _mm256_srli_epi16(_mm256_add_epi16(step3_p1_hi, _mm256_set1_epi16(7)),
+-                            4),
+-          8);
++    case WUFFS_BASE__PIXEL_FORMAT__Y_16LE:
++      return wuffs_private_impl__swizzle_y_16le__y_16be;
+ 
+-      // Bitwise-or two "0x00"-rich u16x16 vectors to get a u8x32 vector. Do
+-      // that twice. Once for the low columns and once for the high columns.
+-      //
+-      // In terms of jxx (major row) or nxx (minor row) source samples:
+-      //  - low  columns means ( 0 ..  8; 16 .. 24).
+-      //  - high columns means ( 8 .. 16; 24 .. 32).
+-      //
+-      // In terms of dxx destination samples (there are twice as many):
+-      //  - low  columns means ( 0 .. 16; 32 .. 48).
+-      //  - high columns means (16 .. 32; 48 .. 64).
+-      //
+-      // step5_lo = [d00 d01 .. d14 d15  d32 d33 .. d46 d47]
+-      // step5_hi = [d16 d17 .. d30 d31  d48 d49 .. d62 d63]
+-      //
+-      // The d00, d02 ... d62 even elements come from (p0, m1) weighted sums.
+-      // The d01, d03 ... d63 odd  elements come from (p0, p1) weighted sums.
+-      __m256i step5_lo = _mm256_or_si256(step4_m1_lo, step4_p1_lo);
+-      __m256i step5_hi = _mm256_or_si256(step4_m1_hi, step4_p1_hi);
++    case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
++      return wuffs_private_impl__swizzle_copy_2_2;
+ 
+-      // Permute and store.
+-      //
+-      // step6_00_31 = [d00 d01 .. d14 d15  d16 d17 .. d30 d31]
+-      // step6_32_63 = [d32 d33 .. d46 d47  d48 d49 .. d62 d63]
+-      __m256i step6_00_31 = _mm256_permute2x128_si256(step5_lo, step5_hi, 0x20);
+-      __m256i step6_32_63 = _mm256_permute2x128_si256(step5_lo, step5_hi, 0x31);
+-      _mm256_storeu_si256((__m256i*)(void*)(dp + 0x00), step6_00_31);
+-      _mm256_storeu_si256((__m256i*)(void*)(dp + 0x20), step6_32_63);
++    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
++      return wuffs_private_impl__swizzle_bgr_565__y_16be;
+ 
+-      // Advance by up to 32 source samples (64 destination samples). The first
+-      // iteration might be smaller than 32 so that all of the remaining steps
+-      // are exactly 32.
+-      size_t n = 32u - (31u & (0u - src_len));
+-      dp += 2u * n;
+-      sp_major += n;
+-      sp_minor += n;
+-      src_len -= n;
+-    }
+-  }
++    case WUFFS_BASE__PIXEL_FORMAT__BGR:
++    case WUFFS_BASE__PIXEL_FORMAT__RGB:
++      return wuffs_private_impl__swizzle_xxx__y_16be;
+ 
+-  if (last_column) {
+-    uint32_t sv_major_m1 = sp_major[-1];
+-    uint32_t sv_minor_m1 = sp_minor[-1];
+-    uint32_t sv_major_p1 = sp_major[+0];  // Clamp offset to zero.
+-    uint32_t sv_minor_p1 = sp_minor[+0];  // Clamp offset to zero.
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
++      return wuffs_private_impl__swizzle_xxxx__y_16be;
+ 
+-    uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
+-                  (3u * ((uint32_t)(*sp_minor++)));
+-    *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
+-    *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE:
++      return wuffs_private_impl__swizzle_xxxxxxxx__y_16be;
+   }
+-
+-  return dst_ptr;
++  return NULL;
+ }
+-#endif
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_64)
+-// ‼ WUFFS MULTI-FILE SECTION -x86_avx2
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) ||
+-        // defined(WUFFS_CONFIG__MODULE__BASE) ||
+-        // defined(WUFFS_CONFIG__MODULE__BASE__PIXCONV)
+-
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
+-    defined(WUFFS_CONFIG__MODULE__BASE__UTF8)
++static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
++wuffs_private_impl__pixel_swizzler__prepare__ya_nonpremul(
++    wuffs_base__pixel_swizzler* p,
++    wuffs_base__pixel_format dst_pixfmt,
++    wuffs_base__slice_u8 dst_palette,
++    wuffs_base__slice_u8 src_palette,
++    wuffs_base__pixel_blend blend) {
++  switch (dst_pixfmt.repr) {
++    case WUFFS_BASE__PIXEL_FORMAT__YA_NONPREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_copy_2_2;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_ya_nonpremul__ya_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-// ---------------- Unicode and UTF-8
++    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgr_565__ya_nonpremul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgr_565__ya_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-WUFFS_BASE__MAYBE_STATIC size_t  //
+-wuffs_base__utf_8__encode(wuffs_base__slice_u8 dst, uint32_t code_point) {
+-  if (code_point <= 0x7F) {
+-    if (dst.len >= 1) {
+-      dst.ptr[0] = (uint8_t)(code_point);
+-      return 1;
+-    }
++    case WUFFS_BASE__PIXEL_FORMAT__BGR:
++    case WUFFS_BASE__PIXEL_FORMAT__RGB:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_xxx__ya_nonpremul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_xxx__ya_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-  } else if (code_point <= 0x07FF) {
+-    if (dst.len >= 2) {
+-      dst.ptr[0] = (uint8_t)(0xC0 | ((code_point >> 6)));
+-      dst.ptr[1] = (uint8_t)(0x80 | ((code_point >> 0) & 0x3F));
+-      return 2;
+-    }
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgra_nonpremul__ya_nonpremul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_nonpremul__ya_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-  } else if (code_point <= 0xFFFF) {
+-    if ((dst.len >= 3) && ((code_point < 0xD800) || (0xDFFF < code_point))) {
+-      dst.ptr[0] = (uint8_t)(0xE0 | ((code_point >> 12)));
+-      dst.ptr[1] = (uint8_t)(0x80 | ((code_point >> 6) & 0x3F));
+-      dst.ptr[2] = (uint8_t)(0x80 | ((code_point >> 0) & 0x3F));
+-      return 3;
+-    }
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgra_premul__ya_nonpremul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_premul__ya_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-  } else if (code_point <= 0x10FFFF) {
+-    if (dst.len >= 4) {
+-      dst.ptr[0] = (uint8_t)(0xF0 | ((code_point >> 18)));
+-      dst.ptr[1] = (uint8_t)(0x80 | ((code_point >> 12) & 0x3F));
+-      dst.ptr[2] = (uint8_t)(0x80 | ((code_point >> 6) & 0x3F));
+-      dst.ptr[3] = (uint8_t)(0x80 | ((code_point >> 0) & 0x3F));
+-      return 4;
+-    }
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__ya_nonpremul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__ya_nonpremul__src_over;
++      }
++      return NULL;
+   }
+-
+-  return 0;
++  return NULL;
+ }
+ 
+-// wuffs_base__utf_8__byte_length_minus_1 is the byte length (minus 1) of a
+-// UTF-8 encoded code point, based on the encoding's initial byte.
+-//  - 0x00 is 1-byte UTF-8 (ASCII).
+-//  - 0x01 is the start of 2-byte UTF-8.
+-//  - 0x02 is the start of 3-byte UTF-8.
+-//  - 0x03 is the start of 4-byte UTF-8.
+-//  - 0x40 is a UTF-8 tail byte.
+-//  - 0x80 is invalid UTF-8.
+-//
+-// RFC 3629 (UTF-8) gives this grammar for valid UTF-8:
+-//    UTF8-1      = %x00-7F
+-//    UTF8-2      = %xC2-DF UTF8-tail
+-//    UTF8-3      = %xE0 %xA0-BF UTF8-tail / %xE1-EC 2( UTF8-tail ) /
+-//                  %xED %x80-9F UTF8-tail / %xEE-EF 2( UTF8-tail )
+-//    UTF8-4      = %xF0 %x90-BF 2( UTF8-tail ) / %xF1-F3 3( UTF8-tail ) /
+-//                  %xF4 %x80-8F 2( UTF8-tail )
+-//    UTF8-tail   = %x80-BF
+-static const uint8_t wuffs_base__utf_8__byte_length_minus_1[256] = {
+-    // 0     1     2     3     4     5     6     7
+-    // 8     9     A     B     C     D     E     F
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x00 ..= 0x07.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x08 ..= 0x0F.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x10 ..= 0x17.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x18 ..= 0x1F.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x20 ..= 0x27.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x28 ..= 0x2F.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x30 ..= 0x37.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x38 ..= 0x3F.
+-
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x40 ..= 0x47.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x48 ..= 0x4F.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x50 ..= 0x57.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x58 ..= 0x5F.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x60 ..= 0x67.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x68 ..= 0x6F.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x70 ..= 0x77.
+-    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x78 ..= 0x7F.
+-
+-    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0x80 ..= 0x87.
+-    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0x88 ..= 0x8F.
+-    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0x90 ..= 0x97.
+-    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0x98 ..= 0x9F.
+-    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0xA0 ..= 0xA7.
+-    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0xA8 ..= 0xAF.
+-    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0xB0 ..= 0xB7.
+-    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0xB8 ..= 0xBF.
++static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
++wuffs_private_impl__pixel_swizzler__prepare__indexed__bgra_nonpremul(
++    wuffs_base__pixel_swizzler* p,
++    wuffs_base__pixel_format dst_pixfmt,
++    wuffs_base__slice_u8 dst_palette,
++    wuffs_base__slice_u8 src_palette,
++    wuffs_base__pixel_blend blend) {
++  switch (dst_pixfmt.repr) {
++    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
++      if (wuffs_private_impl__slice_u8__copy_from_slice(dst_palette,
++                                                        src_palette) !=
++          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
++        return NULL;
++      }
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_copy_1_1;
++      }
++      return NULL;
+ 
+-    0x80, 0x80, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,  // 0xC0 ..= 0xC7.
+-    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,  // 0xC8 ..= 0xCF.
+-    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,  // 0xD0 ..= 0xD7.
+-    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,  // 0xD8 ..= 0xDF.
+-    0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,  // 0xE0 ..= 0xE7.
+-    0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,  // 0xE8 ..= 0xEF.
+-    0x03, 0x03, 0x03, 0x03, 0x03, 0x80, 0x80, 0x80,  // 0xF0 ..= 0xF7.
+-    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xF8 ..= 0xFF.
+-    // 0     1     2     3     4     5     6     7
+-    // 8     9     A     B     C     D     E     F
+-};
++    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          if (wuffs_private_impl__swizzle_squash_align4_bgr_565_8888(
++                  dst_palette.ptr, dst_palette.len, src_palette.ptr,
++                  src_palette.len, true) !=
++              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
++            return NULL;
++          }
++          return wuffs_private_impl__swizzle_bgr_565__index__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          if (wuffs_private_impl__slice_u8__copy_from_slice(dst_palette,
++                                                            src_palette) !=
++              WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
++            return NULL;
++          }
++          return wuffs_private_impl__swizzle_bgr_565__index_bgra_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__utf_8__next__output  //
+-wuffs_base__utf_8__next(const uint8_t* s_ptr, size_t s_len) {
+-  if (s_len == 0) {
+-    return wuffs_base__make_utf_8__next__output(0, 0);
+-  }
+-  uint32_t c = s_ptr[0];
+-  switch (wuffs_base__utf_8__byte_length_minus_1[c & 0xFF]) {
+-    case 0:
+-      return wuffs_base__make_utf_8__next__output(c, 1);
++    case WUFFS_BASE__PIXEL_FORMAT__BGR:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          if (wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul__src(
++                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
++                  src_palette.len) !=
++              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
++            return NULL;
++          }
++          return wuffs_private_impl__swizzle_xxx__index__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          if (wuffs_private_impl__slice_u8__copy_from_slice(dst_palette,
++                                                            src_palette) !=
++              WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
++            return NULL;
++          }
++          return wuffs_private_impl__swizzle_xxx__index_bgra_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-    case 1:
+-      if (s_len < 2) {
+-        break;
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
++      if (wuffs_private_impl__slice_u8__copy_from_slice(dst_palette,
++                                                        src_palette) !=
++          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
++        return NULL;
+       }
+-      c = wuffs_base__peek_u16le__no_bounds_check(s_ptr);
+-      if ((c & 0xC000) != 0x8000) {
+-        break;
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_xxxx__index__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_nonpremul__index_bgra_nonpremul__src_over;
+       }
+-      c = (0x0007C0 & (c << 6)) | (0x00003F & (c >> 8));
+-      return wuffs_base__make_utf_8__next__output(c, 2);
++      return NULL;
+ 
+-    case 2:
+-      if (s_len < 3) {
+-        break;
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
++      if (wuffs_private_impl__slice_u8__copy_from_slice(dst_palette,
++                                                        src_palette) !=
++          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
++        return NULL;
+       }
+-      c = wuffs_base__peek_u24le__no_bounds_check(s_ptr);
+-      if ((c & 0xC0C000) != 0x808000) {
+-        break;
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_xxxxxxxx__index__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__index_bgra_nonpremul__src_over;
+       }
+-      c = (0x00F000 & (c << 12)) | (0x000FC0 & (c >> 2)) |
+-          (0x00003F & (c >> 16));
+-      if ((c <= 0x07FF) || ((0xD800 <= c) && (c <= 0xDFFF))) {
+-        break;
++      return NULL;
++
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          if (wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul__src(
++                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
++                  src_palette.len) !=
++              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
++            return NULL;
++          }
++          return wuffs_private_impl__swizzle_xxxx__index__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          if (wuffs_private_impl__slice_u8__copy_from_slice(dst_palette,
++                                                            src_palette) !=
++              WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
++            return NULL;
++          }
++          return wuffs_private_impl__swizzle_bgra_premul__index_bgra_nonpremul__src_over;
+       }
+-      return wuffs_base__make_utf_8__next__output(c, 3);
++      return NULL;
+ 
+-    case 3:
+-      if (s_len < 4) {
+-        break;
++    case WUFFS_BASE__PIXEL_FORMAT__RGB:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          if (wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul__src(
++                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
++                  src_palette.len) !=
++              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
++            return NULL;
++          }
++          return wuffs_private_impl__swizzle_xxx__index__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          if (wuffs_private_impl__swizzle_swap_rgbx_bgrx(
++                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
++                  src_palette.len) !=
++              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
++            return NULL;
++          }
++          return wuffs_private_impl__swizzle_xxx__index_bgra_nonpremul__src_over;
+       }
+-      c = wuffs_base__peek_u32le__no_bounds_check(s_ptr);
+-      if ((c & 0xC0C0C000) != 0x80808000) {
+-        break;
++      return NULL;
++
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
++      if (wuffs_private_impl__swizzle_swap_rgbx_bgrx(
++              dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
++              src_palette.len) !=
++          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
++        return NULL;
+       }
+-      c = (0x1C0000 & (c << 18)) | (0x03F000 & (c << 4)) |
+-          (0x000FC0 & (c >> 10)) | (0x00003F & (c >> 24));
+-      if ((c <= 0xFFFF) || (0x110000 <= c)) {
+-        break;
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_xxxx__index__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_nonpremul__index_bgra_nonpremul__src_over;
+       }
+-      return wuffs_base__make_utf_8__next__output(c, 4);
+-  }
++      return NULL;
+ 
+-  return wuffs_base__make_utf_8__next__output(
+-      WUFFS_BASE__UNICODE_REPLACEMENT_CHARACTER, 1);
+-}
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          if (wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul__src(
++                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
++                  src_palette.len) !=
++              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
++            return NULL;
++          }
++          return wuffs_private_impl__swizzle_xxxx__index__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          if (wuffs_private_impl__swizzle_swap_rgbx_bgrx(
++                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
++                  src_palette.len) !=
++              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
++            return NULL;
++          }
++          return wuffs_private_impl__swizzle_bgra_premul__index_bgra_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__utf_8__next__output  //
+-wuffs_base__utf_8__next_from_end(const uint8_t* s_ptr, size_t s_len) {
+-  if (s_len == 0) {
+-    return wuffs_base__make_utf_8__next__output(0, 0);
++    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
++      // TODO.
++      break;
+   }
+-  const uint8_t* ptr = &s_ptr[s_len - 1];
+-  if (*ptr < 0x80) {
+-    return wuffs_base__make_utf_8__next__output(*ptr, 1);
++  return NULL;
++}
+ 
+-  } else if (*ptr < 0xC0) {
+-    const uint8_t* too_far = &s_ptr[(s_len > 4) ? (s_len - 4) : 0];
+-    uint32_t n = 1;
+-    while (ptr != too_far) {
+-      ptr--;
+-      n++;
+-      if (*ptr < 0x80) {
+-        break;
+-      } else if (*ptr < 0xC0) {
+-        continue;
++static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
++wuffs_private_impl__pixel_swizzler__prepare__indexed__bgra_binary(
++    wuffs_base__pixel_swizzler* p,
++    wuffs_base__pixel_format dst_pixfmt,
++    wuffs_base__slice_u8 dst_palette,
++    wuffs_base__slice_u8 src_palette,
++    wuffs_base__pixel_blend blend) {
++  switch (dst_pixfmt.repr) {
++    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:
++      if (wuffs_private_impl__slice_u8__copy_from_slice(dst_palette,
++                                                        src_palette) !=
++          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
++        return NULL;
+       }
+-      wuffs_base__utf_8__next__output o = wuffs_base__utf_8__next(ptr, n);
+-      if (o.byte_length != n) {
+-        break;
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_copy_1_1;
+       }
+-      return o;
+-    }
+-  }
+-
+-  return wuffs_base__make_utf_8__next__output(
+-      WUFFS_BASE__UNICODE_REPLACEMENT_CHARACTER, 1);
+-}
++      return NULL;
+ 
+-WUFFS_BASE__MAYBE_STATIC size_t  //
+-wuffs_base__utf_8__longest_valid_prefix(const uint8_t* s_ptr, size_t s_len) {
+-  // TODO: possibly optimize the all-ASCII case (4 or 8 bytes at a time).
+-  //
+-  // TODO: possibly optimize this by manually inlining the
+-  // wuffs_base__utf_8__next calls.
+-  size_t original_len = s_len;
+-  while (s_len > 0) {
+-    wuffs_base__utf_8__next__output o = wuffs_base__utf_8__next(s_ptr, s_len);
+-    if ((o.code_point > 0x7F) && (o.byte_length == 1)) {
+-      break;
+-    }
+-    s_ptr += o.byte_length;
+-    s_len -= o.byte_length;
+-  }
+-  return original_len - s_len;
+-}
++    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
++      if (wuffs_private_impl__swizzle_squash_align4_bgr_565_8888(
++              dst_palette.ptr, dst_palette.len, src_palette.ptr,
++              src_palette.len, false) !=
++          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
++        return NULL;
++      }
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgr_565__index__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgr_565__index_binary_alpha__src_over;
++      }
++      return NULL;
+ 
+-WUFFS_BASE__MAYBE_STATIC size_t  //
+-wuffs_base__ascii__longest_valid_prefix(const uint8_t* s_ptr, size_t s_len) {
+-  // TODO: possibly optimize this by checking 4 or 8 bytes at a time.
+-  const uint8_t* original_ptr = s_ptr;
+-  const uint8_t* p = s_ptr;
+-  const uint8_t* q = s_ptr + s_len;
+-  for (; (p != q) && ((*p & 0x80) == 0); p++) {
+-  }
+-  return (size_t)(p - original_ptr);
+-}
++    case WUFFS_BASE__PIXEL_FORMAT__BGR:
++      if (wuffs_private_impl__slice_u8__copy_from_slice(dst_palette,
++                                                        src_palette) !=
++          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
++        return NULL;
++      }
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_xxx__index__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_xxx__index_binary_alpha__src_over;
++      }
++      return NULL;
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) ||
+-        // defined(WUFFS_CONFIG__MODULE__BASE) ||
+-        // defined(WUFFS_CONFIG__MODULE__BASE__UTF8)
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
++      if (wuffs_private_impl__slice_u8__copy_from_slice(dst_palette,
++                                                        src_palette) !=
++          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
++        return NULL;
++      }
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_xxxx__index__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_xxxx__index_binary_alpha__src_over;
++      }
++      return NULL;
+ 
+-#ifdef __cplusplus
+-}  // extern "C"
+-#endif
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
++      if (wuffs_private_impl__slice_u8__copy_from_slice(dst_palette,
++                                                        src_palette) !=
++          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
++        return NULL;
++      }
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_xxxxxxxx__index__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_xxxxxxxx__index_binary_alpha__src_over;
++      }
++      return NULL;
+ 
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ADLER32)
++    case WUFFS_BASE__PIXEL_FORMAT__RGB:
++      if (wuffs_private_impl__swizzle_swap_rgbx_bgrx(
++              dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
++              src_palette.len) !=
++          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
++        return NULL;
++      }
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_xxx__index__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_xxx__index_binary_alpha__src_over;
++      }
++      return NULL;
+ 
+-// ---------------- Status Codes Implementations
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
++      if (wuffs_private_impl__swizzle_swap_rgbx_bgrx(
++              dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
++              src_palette.len) !=
++          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
++        return NULL;
++      }
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_xxxx__index__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_xxxx__index_binary_alpha__src_over;
++      }
++      return NULL;
++  }
++  return NULL;
++}
+ 
+-// ---------------- Private Consts
++static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
++wuffs_private_impl__pixel_swizzler__prepare__bgr_565(
++    wuffs_base__pixel_swizzler* p,
++    wuffs_base__pixel_format dst_pixfmt,
++    wuffs_base__slice_u8 dst_palette,
++    wuffs_base__slice_u8 src_palette,
++    wuffs_base__pixel_blend blend) {
++  switch (dst_pixfmt.repr) {
++    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
++      return wuffs_private_impl__swizzle_copy_2_2;
+ 
+-// ---------------- Private Initializer Prototypes
++    case WUFFS_BASE__PIXEL_FORMAT__BGR:
++      return wuffs_private_impl__swizzle_bgr__bgr_565;
+ 
+-// ---------------- Private Function Prototypes
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
++      return wuffs_private_impl__swizzle_bgrw__bgr_565;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_adler32__hasher__up(
+-    wuffs_adler32__hasher* self,
+-    wuffs_base__slice_u8 a_x);
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
++      return wuffs_private_impl__swizzle_bgrw_4x16le__bgr_565;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_adler32__hasher__up__choosy_default(
+-    wuffs_adler32__hasher* self,
+-    wuffs_base__slice_u8 a_x);
++    case WUFFS_BASE__PIXEL_FORMAT__RGB:
++      return wuffs_private_impl__swizzle_rgb__bgr_565;
+ 
+-#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_adler32__hasher__up_arm_neon(
+-    wuffs_adler32__hasher* self,
+-    wuffs_base__slice_u8 a_x);
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
++      return wuffs_private_impl__swizzle_rgbw__bgr_565;
++  }
++  return NULL;
++}
+ 
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_adler32__hasher__up_x86_sse42(
+-    wuffs_adler32__hasher* self,
+-    wuffs_base__slice_u8 a_x);
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
++static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
++wuffs_private_impl__pixel_swizzler__prepare__bgr(
++    wuffs_base__pixel_swizzler* p,
++    wuffs_base__pixel_format dst_pixfmt,
++    wuffs_base__slice_u8 dst_palette,
++    wuffs_base__slice_u8 src_palette,
++    wuffs_base__pixel_blend blend) {
++  switch (dst_pixfmt.repr) {
++    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
++      return wuffs_private_impl__swizzle_bgr_565__bgr;
+ 
+-// ---------------- VTables
++    case WUFFS_BASE__PIXEL_FORMAT__BGR:
++      return wuffs_private_impl__swizzle_copy_3_3;
+ 
+-const wuffs_base__hasher_u32__func_ptrs
+-wuffs_adler32__hasher__func_ptrs_for__wuffs_base__hasher_u32 = {
+-  (uint32_t(*)(const void*))(&wuffs_adler32__hasher__checksum_u32),
+-  (uint64_t(*)(const void*,
+-      uint32_t))(&wuffs_adler32__hasher__get_quirk),
+-  (wuffs_base__status(*)(void*,
+-      uint32_t,
+-      uint64_t))(&wuffs_adler32__hasher__set_quirk),
+-  (wuffs_base__empty_struct(*)(void*,
+-      wuffs_base__slice_u8))(&wuffs_adler32__hasher__update),
+-  (uint32_t(*)(void*,
+-      wuffs_base__slice_u8))(&wuffs_adler32__hasher__update_u32),
+-};
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++      if (wuffs_base__cpu_arch__have_x86_sse42()) {
++        return wuffs_private_impl__swizzle_bgrw__bgr__x86_sse42;
++      }
++#endif
++      return wuffs_private_impl__swizzle_bgrw__bgr;
+ 
+-// ---------------- Initializer Implementations
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
++      return wuffs_private_impl__swizzle_bgrw_4x16le__bgr;
+ 
+-wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_adler32__hasher__initialize(
+-    wuffs_adler32__hasher* self,
+-    size_t sizeof_star_self,
+-    uint64_t wuffs_version,
+-    uint32_t options){
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (sizeof(*self) != sizeof_star_self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
+-  }
+-  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
+-      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
+-  }
++    case WUFFS_BASE__PIXEL_FORMAT__RGB:
++      return wuffs_private_impl__swizzle_swap_rgb_bgr;
+ 
+-  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
+-    // The whole point of this if-check is to detect an uninitialized *self.
+-    // We disable the warning on GCC. Clang-5.0 does not have this warning.
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+-#endif
+-    if (self->private_impl.magic != 0) {
+-      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
+-    }
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic pop
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++      if (wuffs_base__cpu_arch__have_x86_sse42()) {
++        return wuffs_private_impl__swizzle_bgrw__rgb__x86_sse42;
++      }
+ #endif
+-  } else {
+-    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
+-      memset(self, 0, sizeof(*self));
+-      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
+-    } else {
+-      memset(&(self->private_impl), 0, sizeof(self->private_impl));
+-    }
++      return wuffs_private_impl__swizzle_bgrw__rgb;
+   }
++  return NULL;
++}
+ 
+-  self->private_impl.choosy_up = &wuffs_adler32__hasher__up__choosy_default;
++static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
++wuffs_private_impl__pixel_swizzler__prepare__bgra_nonpremul(
++    wuffs_base__pixel_swizzler* p,
++    wuffs_base__pixel_format dst_pixfmt,
++    wuffs_base__slice_u8 dst_palette,
++    wuffs_base__slice_u8 src_palette,
++    wuffs_base__pixel_blend blend) {
++  switch (dst_pixfmt.repr) {
++    case WUFFS_BASE__PIXEL_FORMAT__Y:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_y__bgra_nonpremul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_y__bgra_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-  self->private_impl.magic = WUFFS_BASE__MAGIC;
+-  self->private_impl.vtable_for__wuffs_base__hasher_u32.vtable_name =
+-      wuffs_base__hasher_u32__vtable_name;
+-  self->private_impl.vtable_for__wuffs_base__hasher_u32.function_pointers =
+-      (const void*)(&wuffs_adler32__hasher__func_ptrs_for__wuffs_base__hasher_u32);
+-  return wuffs_base__make_status(NULL);
+-}
++    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgr_565__bgra_nonpremul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgr_565__bgra_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-wuffs_adler32__hasher*
+-wuffs_adler32__hasher__alloc(void) {
+-  wuffs_adler32__hasher* x =
+-      (wuffs_adler32__hasher*)(calloc(sizeof(wuffs_adler32__hasher), 1));
+-  if (!x) {
+-    return NULL;
+-  }
+-  if (wuffs_adler32__hasher__initialize(
+-      x, sizeof(wuffs_adler32__hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
+-    free(x);
+-    return NULL;
+-  }
+-  return x;
+-}
++    case WUFFS_BASE__PIXEL_FORMAT__BGR:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgr__bgra_nonpremul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgr__bgra_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-size_t
+-sizeof__wuffs_adler32__hasher(void) {
+-  return sizeof(wuffs_adler32__hasher);
+-}
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_copy_4_4;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_nonpremul__bgra_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-// ---------------- Function Implementations
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__bgra_nonpremul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__bgra_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-// -------- func adler32.hasher.get_quirk
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_adler32__hasher__get_quirk(
+-    const wuffs_adler32__hasher* self,
+-    uint32_t a_key) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
++      // TODO.
++      break;
+ 
+-  return 0u;
+-}
++    case WUFFS_BASE__PIXEL_FORMAT__RGB:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgr__rgba_nonpremul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgr__rgba_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-// -------- func adler32.hasher.set_quirk
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++          if (wuffs_base__cpu_arch__have_x86_sse42()) {
++            return wuffs_private_impl__swizzle_swap_rgbx_bgrx__x86_sse42;
++          }
++#endif
++          return wuffs_private_impl__swizzle_swap_rgbx_bgrx;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_nonpremul__rgba_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_adler32__hasher__set_quirk(
+-    wuffs_adler32__hasher* self,
+-    uint32_t a_key,
+-    uint64_t a_value) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
++      // TODO.
++      break;
++  }
++  return NULL;
+ }
+ 
+-// -------- func adler32.hasher.update
++static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
++wuffs_private_impl__pixel_swizzler__prepare__bgra_nonpremul_4x16le(
++    wuffs_base__pixel_swizzler* p,
++    wuffs_base__pixel_format dst_pixfmt,
++    wuffs_base__slice_u8 dst_palette,
++    wuffs_base__slice_u8 src_palette,
++    wuffs_base__pixel_blend blend) {
++  switch (dst_pixfmt.repr) {
++    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgr_565__bgra_nonpremul_4x16le__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgr_565__bgra_nonpremul_4x16le__src_over;
++      }
++      return NULL;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_adler32__hasher__update(
+-    wuffs_adler32__hasher* self,
+-    wuffs_base__slice_u8 a_x) {
+-  if (!self) {
+-    return wuffs_base__make_empty_struct();
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_empty_struct();
+-  }
++    case WUFFS_BASE__PIXEL_FORMAT__BGR:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgr__bgra_nonpremul_4x16le__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgr__bgra_nonpremul_4x16le__src_over;
++      }
++      return NULL;
+ 
+-  if ( ! self->private_impl.f_started) {
+-    self->private_impl.f_started = true;
+-    self->private_impl.f_state = 1u;
+-    self->private_impl.choosy_up = (
+-#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-        wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_adler32__hasher__up_arm_neon :
+-#endif
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_adler32__hasher__up_x86_sse42 :
+-#endif
+-        self->private_impl.choosy_up);
+-  }
+-  wuffs_adler32__hasher__up(self, a_x);
+-  return wuffs_base__make_empty_struct();
+-}
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgra_nonpremul__bgra_nonpremul_4x16le__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_nonpremul__bgra_nonpremul_4x16le__src_over;
++      }
++      return NULL;
+ 
+-// -------- func adler32.hasher.update_u32
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_copy_8_8;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__bgra_nonpremul_4x16le__src_over;
++      }
++      return NULL;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_adler32__hasher__update_u32(
+-    wuffs_adler32__hasher* self,
+-    wuffs_base__slice_u8 a_x) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return 0;
+-  }
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul_4x16le__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul_4x16le__src_over;
++      }
++      return NULL;
+ 
+-  wuffs_adler32__hasher__update(self, a_x);
+-  return self->private_impl.f_state;
+-}
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
++      // TODO.
++      break;
+ 
+-// -------- func adler32.hasher.up
++    case WUFFS_BASE__PIXEL_FORMAT__RGB:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgr__rgba_nonpremul_4x16le__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgr__rgba_nonpremul_4x16le__src_over;
++      }
++      return NULL;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_adler32__hasher__up(
+-    wuffs_adler32__hasher* self,
+-    wuffs_base__slice_u8 a_x) {
+-  return (*self->private_impl.choosy_up)(self, a_x);
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_rgba_nonpremul__bgra_nonpremul_4x16le__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_rgba_nonpremul__bgra_nonpremul_4x16le__src_over;
++      }
++      break;
++
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul_4x16le__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul_4x16le__src_over;
++      }
++      return NULL;
++
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
++      // TODO.
++      break;
++  }
++  return NULL;
+ }
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_adler32__hasher__up__choosy_default(
+-    wuffs_adler32__hasher* self,
+-    wuffs_base__slice_u8 a_x) {
+-  uint32_t v_s1 = 0;
+-  uint32_t v_s2 = 0;
+-  wuffs_base__slice_u8 v_remaining = {0};
+-  wuffs_base__slice_u8 v_p = {0};
+-
+-  v_s1 = ((self->private_impl.f_state) & 0xFFFFu);
+-  v_s2 = ((self->private_impl.f_state) >> (32u - 16u));
+-  while (((uint64_t)(a_x.len)) > 0u) {
+-    v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0u);
+-    if (((uint64_t)(a_x.len)) > 5552u) {
+-      v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 5552u);
+-      a_x = wuffs_base__slice_u8__subslice_j(a_x, 5552u);
+-    }
+-    {
+-      wuffs_base__slice_u8 i_slice_p = a_x;
+-      v_p.ptr = i_slice_p.ptr;
+-      v_p.len = 1;
+-      uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 8) * 8);
+-      while (v_p.ptr < i_end0_p) {
+-        v_s1 += ((uint32_t)(v_p.ptr[0u]));
+-        v_s2 += v_s1;
+-        v_p.ptr += 1;
+-        v_s1 += ((uint32_t)(v_p.ptr[0u]));
+-        v_s2 += v_s1;
+-        v_p.ptr += 1;
+-        v_s1 += ((uint32_t)(v_p.ptr[0u]));
+-        v_s2 += v_s1;
+-        v_p.ptr += 1;
+-        v_s1 += ((uint32_t)(v_p.ptr[0u]));
+-        v_s2 += v_s1;
+-        v_p.ptr += 1;
+-        v_s1 += ((uint32_t)(v_p.ptr[0u]));
+-        v_s2 += v_s1;
+-        v_p.ptr += 1;
+-        v_s1 += ((uint32_t)(v_p.ptr[0u]));
+-        v_s2 += v_s1;
+-        v_p.ptr += 1;
+-        v_s1 += ((uint32_t)(v_p.ptr[0u]));
+-        v_s2 += v_s1;
+-        v_p.ptr += 1;
+-        v_s1 += ((uint32_t)(v_p.ptr[0u]));
+-        v_s2 += v_s1;
+-        v_p.ptr += 1;
+-      }
+-      v_p.len = 1;
+-      uint8_t* i_end1_p = i_slice_p.ptr + i_slice_p.len;
+-      while (v_p.ptr < i_end1_p) {
+-        v_s1 += ((uint32_t)(v_p.ptr[0u]));
+-        v_s2 += v_s1;
+-        v_p.ptr += 1;
++static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
++wuffs_private_impl__pixel_swizzler__prepare__bgra_premul(
++    wuffs_base__pixel_swizzler* p,
++    wuffs_base__pixel_format dst_pixfmt,
++    wuffs_base__slice_u8 dst_palette,
++    wuffs_base__slice_u8 src_palette,
++    wuffs_base__pixel_blend blend) {
++  switch (dst_pixfmt.repr) {
++    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgr_565__bgra_premul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgr_565__bgra_premul__src_over;
+       }
+-      v_p.len = 0;
+-    }
+-    v_s1 %= 65521u;
+-    v_s2 %= 65521u;
+-    a_x = v_remaining;
+-  }
+-  self->private_impl.f_state = (((v_s2 & 65535u) << 16u) | (v_s1 & 65535u));
+-  return wuffs_base__make_empty_struct();
+-}
+-
+-// -------- func adler32.hasher.checksum_u32
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_adler32__hasher__checksum_u32(
+-    const wuffs_adler32__hasher* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
+-
+-  return self->private_impl.f_state;
+-}
+-
+-// ‼ WUFFS MULTI-FILE SECTION +arm_neon
+-// -------- func adler32.hasher.up_arm_neon
++      return NULL;
+ 
+-#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_adler32__hasher__up_arm_neon(
+-    wuffs_adler32__hasher* self,
+-    wuffs_base__slice_u8 a_x) {
+-  uint32_t v_s1 = 0;
+-  uint32_t v_s2 = 0;
+-  wuffs_base__slice_u8 v_remaining = {0};
+-  wuffs_base__slice_u8 v_p = {0};
+-  uint8x16_t v_p__left = {0};
+-  uint8x16_t v_p_right = {0};
+-  uint32x4_t v_v1 = {0};
+-  uint32x4_t v_v2 = {0};
+-  uint16x8_t v_col0 = {0};
+-  uint16x8_t v_col1 = {0};
+-  uint16x8_t v_col2 = {0};
+-  uint16x8_t v_col3 = {0};
+-  uint32x2_t v_sum1 = {0};
+-  uint32x2_t v_sum2 = {0};
+-  uint32x2_t v_sum12 = {0};
+-  uint32_t v_num_iterate_bytes = 0;
+-  uint64_t v_tail_index = 0;
++    case WUFFS_BASE__PIXEL_FORMAT__BGR:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgr__bgra_premul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgr__bgra_premul__src_over;
++      }
++      return NULL;
+ 
+-  v_s1 = ((self->private_impl.f_state) & 0xFFFFu);
+-  v_s2 = ((self->private_impl.f_state) >> (32u - 16u));
+-  while ((((uint64_t)(a_x.len)) > 0u) && ((15u & ((uint32_t)(0xFFFu & (uintptr_t)(a_x.ptr)))) != 0u)) {
+-    v_s1 += ((uint32_t)(a_x.ptr[0u]));
+-    v_s2 += v_s1;
+-    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
+-  }
+-  v_s1 %= 65521u;
+-  v_s2 %= 65521u;
+-  while (((uint64_t)(a_x.len)) > 0u) {
+-    v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0u);
+-    if (((uint64_t)(a_x.len)) > 5536u) {
+-      v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 5536u);
+-      a_x = wuffs_base__slice_u8__subslice_j(a_x, 5536u);
+-    }
+-    v_num_iterate_bytes = ((uint32_t)((((uint64_t)(a_x.len)) & 4294967264u)));
+-    v_s2 += ((uint32_t)(v_s1 * v_num_iterate_bytes));
+-    v_v1 = vdupq_n_u32(0u);
+-    v_v2 = vdupq_n_u32(0u);
+-    v_col0 = vdupq_n_u16(0u);
+-    v_col1 = vdupq_n_u16(0u);
+-    v_col2 = vdupq_n_u16(0u);
+-    v_col3 = vdupq_n_u16(0u);
+-    {
+-      wuffs_base__slice_u8 i_slice_p = a_x;
+-      v_p.ptr = i_slice_p.ptr;
+-      v_p.len = 32;
+-      uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32);
+-      while (v_p.ptr < i_end0_p) {
+-        v_p__left = vld1q_u8(v_p.ptr);
+-        v_p_right = vld1q_u8(v_p.ptr + 16u);
+-        v_v2 = vaddq_u32(v_v2, v_v1);
+-        v_v1 = vpadalq_u16(v_v1, vpadalq_u8(vpaddlq_u8(v_p__left), v_p_right));
+-        v_col0 = vaddw_u8(v_col0, vget_low_u8(v_p__left));
+-        v_col1 = vaddw_u8(v_col1, vget_high_u8(v_p__left));
+-        v_col2 = vaddw_u8(v_col2, vget_low_u8(v_p_right));
+-        v_col3 = vaddw_u8(v_col3, vget_high_u8(v_p_right));
+-        v_p.ptr += 32;
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgra_nonpremul__bgra_premul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_nonpremul__bgra_premul__src_over;
+       }
+-      v_p.len = 0;
+-    }
+-    v_v2 = vshlq_n_u32(v_v2, 5u);
+-    v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col0), ((uint16x4_t){32u, 31u, 30u, 29u}));
+-    v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col0), ((uint16x4_t){28u, 27u, 26u, 25u}));
+-    v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col1), ((uint16x4_t){24u, 23u, 22u, 21u}));
+-    v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col1), ((uint16x4_t){20u, 19u, 18u, 17u}));
+-    v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col2), ((uint16x4_t){16u, 15u, 14u, 13u}));
+-    v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col2), ((uint16x4_t){12u, 11u, 10u, 9u}));
+-    v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col3), ((uint16x4_t){8u, 7u, 6u, 5u}));
+-    v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col3), ((uint16x4_t){4u, 3u, 2u, 1u}));
+-    v_sum1 = vpadd_u32(vget_low_u32(v_v1), vget_high_u32(v_v1));
+-    v_sum2 = vpadd_u32(vget_low_u32(v_v2), vget_high_u32(v_v2));
+-    v_sum12 = vpadd_u32(v_sum1, v_sum2);
+-    v_s1 += vget_lane_u32(v_sum12, 0u);
+-    v_s2 += vget_lane_u32(v_sum12, 1u);
+-    v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551584u);
+-    if (v_tail_index < ((uint64_t)(a_x.len))) {
+-      {
+-        wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index);
+-        v_p.ptr = i_slice_p.ptr;
+-        v_p.len = 1;
+-        uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len;
+-        while (v_p.ptr < i_end0_p) {
+-          v_s1 += ((uint32_t)(v_p.ptr[0u]));
+-          v_s2 += v_s1;
+-          v_p.ptr += 1;
+-        }
+-        v_p.len = 0;
++      return NULL;
++
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__bgra_premul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__bgra_premul__src_over;
+       }
+-    }
+-    v_s1 %= 65521u;
+-    v_s2 %= 65521u;
+-    a_x = v_remaining;
+-  }
+-  self->private_impl.f_state = (((v_s2 & 65535u) << 16u) | (v_s1 & 65535u));
+-  return wuffs_base__make_empty_struct();
+-}
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-// ‼ WUFFS MULTI-FILE SECTION -arm_neon
++      return NULL;
+ 
+-// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
+-// -------- func adler32.hasher.up_x86_sse42
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_copy_4_4;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_premul__bgra_premul__src_over;
++      }
++      return NULL;
+ 
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_adler32__hasher__up_x86_sse42(
+-    wuffs_adler32__hasher* self,
+-    wuffs_base__slice_u8 a_x) {
+-  uint32_t v_s1 = 0;
+-  uint32_t v_s2 = 0;
+-  wuffs_base__slice_u8 v_remaining = {0};
+-  wuffs_base__slice_u8 v_p = {0};
+-  __m128i v_zeroes = {0};
+-  __m128i v_ones = {0};
+-  __m128i v_weights__left = {0};
+-  __m128i v_weights_right = {0};
+-  __m128i v_q__left = {0};
+-  __m128i v_q_right = {0};
+-  __m128i v_v1 = {0};
+-  __m128i v_v2 = {0};
+-  __m128i v_v2j = {0};
+-  __m128i v_v2k = {0};
+-  uint32_t v_num_iterate_bytes = 0;
+-  uint64_t v_tail_index = 0;
++    case WUFFS_BASE__PIXEL_FORMAT__RGB:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgr__rgba_premul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgr__rgba_premul__src_over;
++      }
++      return NULL;
+ 
+-  v_zeroes = _mm_set1_epi16((int16_t)(0u));
+-  v_ones = _mm_set1_epi16((int16_t)(1u));
+-  v_weights__left = _mm_set_epi8((int8_t)(17u), (int8_t)(18u), (int8_t)(19u), (int8_t)(20u), (int8_t)(21u), (int8_t)(22u), (int8_t)(23u), (int8_t)(24u), (int8_t)(25u), (int8_t)(26u), (int8_t)(27u), (int8_t)(28u), (int8_t)(29u), (int8_t)(30u), (int8_t)(31u), (int8_t)(32u));
+-  v_weights_right = _mm_set_epi8((int8_t)(1u), (int8_t)(2u), (int8_t)(3u), (int8_t)(4u), (int8_t)(5u), (int8_t)(6u), (int8_t)(7u), (int8_t)(8u), (int8_t)(9u), (int8_t)(10u), (int8_t)(11u), (int8_t)(12u), (int8_t)(13u), (int8_t)(14u), (int8_t)(15u), (int8_t)(16u));
+-  v_s1 = ((self->private_impl.f_state) & 0xFFFFu);
+-  v_s2 = ((self->private_impl.f_state) >> (32u - 16u));
+-  while (((uint64_t)(a_x.len)) > 0u) {
+-    v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0u);
+-    if (((uint64_t)(a_x.len)) > 5536u) {
+-      v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 5536u);
+-      a_x = wuffs_base__slice_u8__subslice_j(a_x, 5536u);
+-    }
+-    v_num_iterate_bytes = ((uint32_t)((((uint64_t)(a_x.len)) & 4294967264u)));
+-    v_s2 += ((uint32_t)(v_s1 * v_num_iterate_bytes));
+-    v_v1 = _mm_setzero_si128();
+-    v_v2j = _mm_setzero_si128();
+-    v_v2k = _mm_setzero_si128();
+-    {
+-      wuffs_base__slice_u8 i_slice_p = a_x;
+-      v_p.ptr = i_slice_p.ptr;
+-      v_p.len = 32;
+-      uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32);
+-      while (v_p.ptr < i_end0_p) {
+-        v_q__left = _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr));
+-        v_q_right = _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 16u));
+-        v_v2j = _mm_add_epi32(v_v2j, v_v1);
+-        v_v1 = _mm_add_epi32(v_v1, _mm_sad_epu8(v_q__left, v_zeroes));
+-        v_v1 = _mm_add_epi32(v_v1, _mm_sad_epu8(v_q_right, v_zeroes));
+-        v_v2k = _mm_add_epi32(v_v2k, _mm_madd_epi16(v_ones, _mm_maddubs_epi16(v_q__left, v_weights__left)));
+-        v_v2k = _mm_add_epi32(v_v2k, _mm_madd_epi16(v_ones, _mm_maddubs_epi16(v_q_right, v_weights_right)));
+-        v_p.ptr += 32;
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgra_nonpremul__rgba_premul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_nonpremul__rgba_premul__src_over;
+       }
+-      v_p.len = 0;
+-    }
+-    v_v1 = _mm_add_epi32(v_v1, _mm_shuffle_epi32(v_v1, (int32_t)(177u)));
+-    v_v1 = _mm_add_epi32(v_v1, _mm_shuffle_epi32(v_v1, (int32_t)(78u)));
+-    v_s1 += ((uint32_t)(_mm_cvtsi128_si32(v_v1)));
+-    v_v2 = _mm_add_epi32(v_v2k, _mm_slli_epi32(v_v2j, (int32_t)(5u)));
+-    v_v2 = _mm_add_epi32(v_v2, _mm_shuffle_epi32(v_v2, (int32_t)(177u)));
+-    v_v2 = _mm_add_epi32(v_v2, _mm_shuffle_epi32(v_v2, (int32_t)(78u)));
+-    v_s2 += ((uint32_t)(_mm_cvtsi128_si32(v_v2)));
+-    v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551584u);
+-    if (v_tail_index < ((uint64_t)(a_x.len))) {
+-      {
+-        wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index);
+-        v_p.ptr = i_slice_p.ptr;
+-        v_p.len = 1;
+-        uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len;
+-        while (v_p.ptr < i_end0_p) {
+-          v_s1 += ((uint32_t)(v_p.ptr[0u]));
+-          v_s2 += v_s1;
+-          v_p.ptr += 1;
+-        }
+-        v_p.len = 0;
++      return NULL;
++
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++          if (wuffs_base__cpu_arch__have_x86_sse42()) {
++            return wuffs_private_impl__swizzle_swap_rgbx_bgrx__x86_sse42;
++          }
++#endif
++          return wuffs_private_impl__swizzle_swap_rgbx_bgrx;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_premul__rgba_premul__src_over;
+       }
+-    }
+-    v_s1 %= 65521u;
+-    v_s2 %= 65521u;
+-    a_x = v_remaining;
++      return NULL;
+   }
+-  self->private_impl.f_state = (((v_s2 & 65535u) << 16u) | (v_s1 & 65535u));
+-  return wuffs_base__make_empty_struct();
++  return NULL;
+ }
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ADLER32)
++static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
++wuffs_private_impl__pixel_swizzler__prepare__bgrx(
++    wuffs_base__pixel_swizzler* p,
++    wuffs_base__pixel_format dst_pixfmt,
++    wuffs_base__slice_u8 dst_palette,
++    wuffs_base__slice_u8 src_palette,
++    wuffs_base__pixel_blend blend) {
++  switch (dst_pixfmt.repr) {
++    case WUFFS_BASE__PIXEL_FORMAT__Y:
++      return wuffs_private_impl__swizzle_y__bgrx;
+ 
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BMP)
++    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
++      return wuffs_private_impl__swizzle_bgr_565__bgrx;
+ 
+-// ---------------- Status Codes Implementations
++    case WUFFS_BASE__PIXEL_FORMAT__BGR:
++      return wuffs_private_impl__swizzle_xxx__xxxx;
+ 
+-const char wuffs_bmp__error__bad_header[] = "#bmp: bad header";
+-const char wuffs_bmp__error__bad_rle_compression[] = "#bmp: bad RLE compression";
+-const char wuffs_bmp__error__truncated_input[] = "#bmp: truncated input";
+-const char wuffs_bmp__error__unsupported_bmp_file[] = "#bmp: unsupported BMP file";
+-const char wuffs_bmp__note__internal_note_short_read[] = "@bmp: internal note: short read";
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
++      return wuffs_private_impl__swizzle_bgrw__bgrx;
+ 
+-// ---------------- Private Consts
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
++      return wuffs_private_impl__swizzle_bgrw_4x16le__bgrx;
+ 
+-#define WUFFS_BMP__COMPRESSION_NONE 0
++    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
++      return wuffs_private_impl__swizzle_copy_4_4;
+ 
+-#define WUFFS_BMP__COMPRESSION_RLE8 1
++    case WUFFS_BASE__PIXEL_FORMAT__RGB:
++      return wuffs_private_impl__swizzle_bgr__rgbx;
+ 
+-#define WUFFS_BMP__COMPRESSION_RLE4 2
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
++      return wuffs_private_impl__swizzle_bgrw__rgbx;
++  }
++  return NULL;
++}
+ 
+-#define WUFFS_BMP__COMPRESSION_BITFIELDS 3
++static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
++wuffs_private_impl__pixel_swizzler__prepare__rgb(
++    wuffs_base__pixel_swizzler* p,
++    wuffs_base__pixel_format dst_pixfmt,
++    wuffs_base__slice_u8 dst_palette,
++    wuffs_base__slice_u8 src_palette,
++    wuffs_base__pixel_blend blend) {
++  switch (dst_pixfmt.repr) {
++    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
++      return wuffs_private_impl__swizzle_bgr_565__rgb;
+ 
+-#define WUFFS_BMP__COMPRESSION_JPEG 4
++    case WUFFS_BASE__PIXEL_FORMAT__BGR:
++      return wuffs_private_impl__swizzle_swap_rgb_bgr;
+ 
+-#define WUFFS_BMP__COMPRESSION_PNG 5
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++      if (wuffs_base__cpu_arch__have_x86_sse42()) {
++        return wuffs_private_impl__swizzle_bgrw__rgb__x86_sse42;
++      }
++#endif
++      return wuffs_private_impl__swizzle_bgrw__rgb;
+ 
+-#define WUFFS_BMP__COMPRESSION_ALPHABITFIELDS 6
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
++      return wuffs_private_impl__swizzle_bgrw_4x16le__rgb;
+ 
+-#define WUFFS_BMP__COMPRESSION_LOW_BIT_DEPTH 256
++    case WUFFS_BASE__PIXEL_FORMAT__RGB:
++      return wuffs_private_impl__swizzle_copy_3_3;
+ 
+-#define WUFFS_BMP__RLE_STATE_NEUTRAL 0
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++      if (wuffs_base__cpu_arch__have_x86_sse42()) {
++        return wuffs_private_impl__swizzle_bgrw__bgr__x86_sse42;
++      }
++#endif
++      return wuffs_private_impl__swizzle_bgrw__bgr;
++  }
++  return NULL;
++}
+ 
+-#define WUFFS_BMP__RLE_STATE_RUN 1
++static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
++wuffs_private_impl__pixel_swizzler__prepare__rgba_nonpremul(
++    wuffs_base__pixel_swizzler* p,
++    wuffs_base__pixel_format dst_pixfmt,
++    wuffs_base__slice_u8 dst_palette,
++    wuffs_base__slice_u8 src_palette,
++    wuffs_base__pixel_blend blend) {
++  switch (dst_pixfmt.repr) {
++    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgr_565__rgba_nonpremul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgr_565__rgba_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-#define WUFFS_BMP__RLE_STATE_ESCAPE 2
++    case WUFFS_BASE__PIXEL_FORMAT__BGR:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgr__rgba_nonpremul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgr__rgba_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-#define WUFFS_BMP__RLE_STATE_LITERAL 3
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++          if (wuffs_base__cpu_arch__have_x86_sse42()) {
++            return wuffs_private_impl__swizzle_swap_rgbx_bgrx__x86_sse42;
++          }
++#endif
++          return wuffs_private_impl__swizzle_swap_rgbx_bgrx;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_nonpremul__rgba_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-#define WUFFS_BMP__RLE_STATE_DELTA_X 4
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__rgba_nonpremul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__rgba_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-#define WUFFS_BMP__RLE_STATE_DELTA_Y 5
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-// ---------------- Private Initializer Prototypes
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
++      // TODO.
++      break;
+ 
+-// ---------------- Private Function Prototypes
++    case WUFFS_BASE__PIXEL_FORMAT__RGB:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgr__bgra_nonpremul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgr__bgra_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bmp__decoder__do_decode_image_config(
+-    wuffs_bmp__decoder* self,
+-    wuffs_base__image_config* a_dst,
+-    wuffs_base__io_buffer* a_src);
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_copy_4_4;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_nonpremul__bgra_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bmp__decoder__do_decode_frame_config(
+-    wuffs_bmp__decoder* self,
+-    wuffs_base__frame_config* a_dst,
+-    wuffs_base__io_buffer* a_src);
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul__src_over;
++      }
++      return NULL;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bmp__decoder__do_decode_frame(
+-    wuffs_bmp__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts);
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
++      // TODO.
++      break;
++  }
++  return NULL;
++}
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bmp__decoder__swizzle_none(
+-    wuffs_bmp__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src);
++static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
++wuffs_private_impl__pixel_swizzler__prepare__rgba_premul(
++    wuffs_base__pixel_swizzler* p,
++    wuffs_base__pixel_format dst_pixfmt,
++    wuffs_base__slice_u8 dst_palette,
++    wuffs_base__slice_u8 src_palette,
++    wuffs_base__pixel_blend blend) {
++  switch (dst_pixfmt.repr) {
++    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgr_565__rgba_premul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgr_565__rgba_premul__src_over;
++      }
++      return NULL;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bmp__decoder__swizzle_rle(
+-    wuffs_bmp__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src);
++    case WUFFS_BASE__PIXEL_FORMAT__BGR:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgr__rgba_premul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgr__rgba_premul__src_over;
++      }
++      return NULL;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bmp__decoder__swizzle_bitfields(
+-    wuffs_bmp__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src);
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgra_nonpremul__rgba_premul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_nonpremul__rgba_premul__src_over;
++      }
++      return NULL;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bmp__decoder__swizzle_low_bit_depth(
+-    wuffs_bmp__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bmp__decoder__do_tell_me_more(
+-    wuffs_bmp__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__more_information* a_minfo,
+-    wuffs_base__io_buffer* a_src);
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__rgba_premul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__rgba_premul__src_over;
++      }
++      return NULL;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bmp__decoder__read_palette(
+-    wuffs_bmp__decoder* self,
+-    wuffs_base__io_buffer* a_src);
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++          if (wuffs_base__cpu_arch__have_x86_sse42()) {
++            return wuffs_private_impl__swizzle_swap_rgbx_bgrx__x86_sse42;
++          }
++#endif
++          return wuffs_private_impl__swizzle_swap_rgbx_bgrx;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_premul__rgba_premul__src_over;
++      }
++      return NULL;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bmp__decoder__process_masks(
+-    wuffs_bmp__decoder* self);
++    case WUFFS_BASE__PIXEL_FORMAT__RGB:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgr__bgra_premul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgr__bgra_premul__src_over;
++      }
++      return NULL;
+ 
+-// ---------------- VTables
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_bgra_nonpremul__bgra_premul__src;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_nonpremul__bgra_premul__src_over;
++      }
++      return NULL;
+ 
+-const wuffs_base__image_decoder__func_ptrs
+-wuffs_bmp__decoder__func_ptrs_for__wuffs_base__image_decoder = {
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__pixel_buffer*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__pixel_blend,
+-      wuffs_base__slice_u8,
+-      wuffs_base__decode_frame_options*))(&wuffs_bmp__decoder__decode_frame),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__frame_config*,
+-      wuffs_base__io_buffer*))(&wuffs_bmp__decoder__decode_frame_config),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__image_config*,
+-      wuffs_base__io_buffer*))(&wuffs_bmp__decoder__decode_image_config),
+-  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_bmp__decoder__frame_dirty_rect),
+-  (uint64_t(*)(const void*,
+-      uint32_t))(&wuffs_bmp__decoder__get_quirk),
+-  (uint64_t(*)(const void*))(&wuffs_bmp__decoder__history_retain_length),
+-  (uint32_t(*)(const void*))(&wuffs_bmp__decoder__num_animation_loops),
+-  (uint64_t(*)(const void*))(&wuffs_bmp__decoder__num_decoded_frame_configs),
+-  (uint64_t(*)(const void*))(&wuffs_bmp__decoder__num_decoded_frames),
+-  (wuffs_base__status(*)(void*,
+-      uint64_t,
+-      uint64_t))(&wuffs_bmp__decoder__restart_frame),
+-  (wuffs_base__status(*)(void*,
+-      uint32_t,
+-      uint64_t))(&wuffs_bmp__decoder__set_quirk),
+-  (wuffs_base__empty_struct(*)(void*,
+-      uint32_t,
+-      bool))(&wuffs_bmp__decoder__set_report_metadata),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__more_information*,
+-      wuffs_base__io_buffer*))(&wuffs_bmp__decoder__tell_me_more),
+-  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_bmp__decoder__workbuf_len),
+-};
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
++      switch (blend) {
++        case WUFFS_BASE__PIXEL_BLEND__SRC:
++          return wuffs_private_impl__swizzle_copy_4_4;
++        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++          return wuffs_private_impl__swizzle_bgra_premul__bgra_premul__src_over;
++      }
++      return NULL;
++  }
++  return NULL;
++}
+ 
+-// ---------------- Initializer Implementations
++// --------
+ 
+-wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_bmp__decoder__initialize(
+-    wuffs_bmp__decoder* self,
+-    size_t sizeof_star_self,
+-    uint64_t wuffs_version,
+-    uint32_t options){
+-  if (!self) {
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status  //
++wuffs_base__pixel_swizzler__prepare(wuffs_base__pixel_swizzler* p,
++                                    wuffs_base__pixel_format dst_pixfmt,
++                                    wuffs_base__slice_u8 dst_palette,
++                                    wuffs_base__pixel_format src_pixfmt,
++                                    wuffs_base__slice_u8 src_palette,
++                                    wuffs_base__pixel_blend blend) {
++  if (!p) {
+     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+-  if (sizeof(*self) != sizeof_star_self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
+-  }
+-  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
+-      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
+-  }
++  p->private_impl.func = NULL;
++  p->private_impl.transparent_black_func = NULL;
++  p->private_impl.dst_pixfmt_bytes_per_pixel = 0;
++  p->private_impl.src_pixfmt_bytes_per_pixel = 0;
+ 
+-  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
+-    // The whole point of this if-check is to detect an uninitialized *self.
+-    // We disable the warning on GCC. Clang-5.0 does not have this warning.
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++  // ----
++
++#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ENABLE_ALLOWLIST)
++  switch (dst_pixfmt.repr) {
++#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_BGR_565)
++    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
++      break;
+ #endif
+-    if (self->private_impl.magic != 0) {
+-      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
+-    }
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic pop
++#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_BGR)
++    case WUFFS_BASE__PIXEL_FORMAT__BGR:
++      break;
+ #endif
+-  } else {
+-    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
+-      memset(self, 0, sizeof(*self));
+-      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
+-    } else {
+-      memset(&(self->private_impl), 0, sizeof(self->private_impl));
+-    }
++#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_BGRA_NONPREMUL)
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
++      break;
++#endif
++#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_BGRA_NONPREMUL_4X16LE)
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
++      break;
++#endif
++#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_BGRA_PREMUL)
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
++      break;
++#endif
++#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_RGB)
++    case WUFFS_BASE__PIXEL_FORMAT__RGB:
++      break;
++#endif
++#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_RGBA_NONPREMUL)
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
++      break;
++#endif
++#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_RGBA_PREMUL)
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
++      break;
++#endif
++    default:
++      return wuffs_base__make_status(
++          wuffs_base__error__disabled_by_wuffs_config_dst_pixel_format_enable_allowlist);
+   }
++#endif  // defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ENABLE_ALLOWLIST)
+ 
+-  self->private_impl.magic = WUFFS_BASE__MAGIC;
+-  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
+-      wuffs_base__image_decoder__vtable_name;
+-  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
+-      (const void*)(&wuffs_bmp__decoder__func_ptrs_for__wuffs_base__image_decoder);
+-  return wuffs_base__make_status(NULL);
+-}
++  // ----
+ 
+-wuffs_bmp__decoder*
+-wuffs_bmp__decoder__alloc(void) {
+-  wuffs_bmp__decoder* x =
+-      (wuffs_bmp__decoder*)(calloc(sizeof(wuffs_bmp__decoder), 1));
+-  if (!x) {
+-    return NULL;
+-  }
+-  if (wuffs_bmp__decoder__initialize(
+-      x, sizeof(wuffs_bmp__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
+-    free(x);
+-    return NULL;
++  wuffs_base__pixel_swizzler__func func = NULL;
++  wuffs_base__pixel_swizzler__transparent_black_func transparent_black_func =
++      NULL;
++
++  uint32_t dst_pixfmt_bits_per_pixel =
++      wuffs_base__pixel_format__bits_per_pixel(&dst_pixfmt);
++  if ((dst_pixfmt_bits_per_pixel == 0) ||
++      ((dst_pixfmt_bits_per_pixel & 7) != 0)) {
++    return wuffs_base__make_status(
++        wuffs_base__error__unsupported_pixel_swizzler_option);
+   }
+-  return x;
+-}
+ 
+-size_t
+-sizeof__wuffs_bmp__decoder(void) {
+-  return sizeof(wuffs_bmp__decoder);
+-}
++  uint32_t src_pixfmt_bits_per_pixel =
++      wuffs_base__pixel_format__bits_per_pixel(&src_pixfmt);
++  if ((src_pixfmt_bits_per_pixel == 0) ||
++      ((src_pixfmt_bits_per_pixel & 7) != 0)) {
++    return wuffs_base__make_status(
++        wuffs_base__error__unsupported_pixel_swizzler_option);
++  }
+ 
+-// ---------------- Function Implementations
++  // TODO: support many more formats.
+ 
+-// -------- func bmp.decoder.get_quirk
++  switch (blend) {
++    case WUFFS_BASE__PIXEL_BLEND__SRC:
++      transparent_black_func =
++          wuffs_private_impl__swizzle_transparent_black_src;
++      break;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_bmp__decoder__get_quirk(
+-    const wuffs_bmp__decoder* self,
+-    uint32_t a_key) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
++    case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
++      transparent_black_func =
++          wuffs_private_impl__swizzle_transparent_black_src_over;
++      break;
+   }
+ 
+-  return 0u;
+-}
++  switch (src_pixfmt.repr) {
++    case WUFFS_BASE__PIXEL_FORMAT__Y:
++      func = wuffs_private_impl__pixel_swizzler__prepare__y(
++          p, dst_pixfmt, dst_palette, src_palette, blend);
++      break;
+ 
+-// -------- func bmp.decoder.set_quirk
++    case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
++      func = wuffs_private_impl__pixel_swizzler__prepare__y_16be(
++          p, dst_pixfmt, dst_palette, src_palette, blend);
++      break;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_bmp__decoder__set_quirk(
+-    wuffs_bmp__decoder* self,
+-    uint32_t a_key,
+-    uint64_t a_value) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
++    case WUFFS_BASE__PIXEL_FORMAT__YA_NONPREMUL:
++      func = wuffs_private_impl__pixel_swizzler__prepare__ya_nonpremul(
++          p, dst_pixfmt, dst_palette, src_palette, blend);
++      break;
++
++    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
++      func =
++          wuffs_private_impl__pixel_swizzler__prepare__indexed__bgra_nonpremul(
++              p, dst_pixfmt, dst_palette, src_palette, blend);
++      break;
++
++    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:
++      func = wuffs_private_impl__pixel_swizzler__prepare__indexed__bgra_binary(
++          p, dst_pixfmt, dst_palette, src_palette, blend);
++      break;
++
++    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
++      func = wuffs_private_impl__pixel_swizzler__prepare__bgr_565(
++          p, dst_pixfmt, dst_palette, src_palette, blend);
++      break;
++
++    case WUFFS_BASE__PIXEL_FORMAT__BGR:
++      func = wuffs_private_impl__pixel_swizzler__prepare__bgr(
++          p, dst_pixfmt, dst_palette, src_palette, blend);
++      break;
++
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
++      func = wuffs_private_impl__pixel_swizzler__prepare__bgra_nonpremul(
++          p, dst_pixfmt, dst_palette, src_palette, blend);
++      break;
++
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
++      func = wuffs_private_impl__pixel_swizzler__prepare__bgra_nonpremul_4x16le(
++          p, dst_pixfmt, dst_palette, src_palette, blend);
++      break;
++
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
++      func = wuffs_private_impl__pixel_swizzler__prepare__bgra_premul(
++          p, dst_pixfmt, dst_palette, src_palette, blend);
++      break;
++
++    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
++      func = wuffs_private_impl__pixel_swizzler__prepare__bgrx(
++          p, dst_pixfmt, dst_palette, src_palette, blend);
++      break;
++
++    case WUFFS_BASE__PIXEL_FORMAT__RGB:
++      func = wuffs_private_impl__pixel_swizzler__prepare__rgb(
++          p, dst_pixfmt, dst_palette, src_palette, blend);
++      break;
++
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
++      func = wuffs_private_impl__pixel_swizzler__prepare__rgba_nonpremul(
++          p, dst_pixfmt, dst_palette, src_palette, blend);
++      break;
++
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
++      func = wuffs_private_impl__pixel_swizzler__prepare__rgba_premul(
++          p, dst_pixfmt, dst_palette, src_palette, blend);
++      break;
+   }
+ 
+-  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++  p->private_impl.func = func;
++  p->private_impl.transparent_black_func = transparent_black_func;
++  p->private_impl.dst_pixfmt_bytes_per_pixel = dst_pixfmt_bits_per_pixel / 8;
++  p->private_impl.src_pixfmt_bytes_per_pixel = src_pixfmt_bits_per_pixel / 8;
++  return wuffs_base__make_status(
++      func ? NULL : wuffs_base__error__unsupported_pixel_swizzler_option);
+ }
+ 
+-// -------- func bmp.decoder.decode_image_config
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_bmp__decoder__decode_image_config(
+-    wuffs_bmp__decoder* self,
+-    wuffs_base__image_config* a_dst,
+-    wuffs_base__io_buffer* a_src) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++WUFFS_BASE__MAYBE_STATIC uint64_t  //
++wuffs_base__pixel_swizzler__limited_swizzle_u32_interleaved_from_reader(
++    const wuffs_base__pixel_swizzler* p,
++    uint32_t up_to_num_pixels,
++    wuffs_base__slice_u8 dst,
++    wuffs_base__slice_u8 dst_palette,
++    const uint8_t** ptr_iop_r,
++    const uint8_t* io2_r) {
++  if (p && p->private_impl.func) {
++    const uint8_t* iop_r = *ptr_iop_r;
++    uint64_t src_len = wuffs_base__u64__min(
++        ((uint64_t)up_to_num_pixels) *
++            ((uint64_t)p->private_impl.src_pixfmt_bytes_per_pixel),
++        ((uint64_t)(io2_r - iop_r)));
++    uint64_t n =
++        (*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr,
++                                dst_palette.len, iop_r, (size_t)src_len);
++    *ptr_iop_r += n * p->private_impl.src_pixfmt_bytes_per_pixel;
++    return n;
+   }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
++  return 0;
++}
++
++WUFFS_BASE__MAYBE_STATIC uint64_t  //
++wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
++    const wuffs_base__pixel_swizzler* p,
++    wuffs_base__slice_u8 dst,
++    wuffs_base__slice_u8 dst_palette,
++    const uint8_t** ptr_iop_r,
++    const uint8_t* io2_r) {
++  if (p && p->private_impl.func) {
++    const uint8_t* iop_r = *ptr_iop_r;
++    uint64_t src_len = ((uint64_t)(io2_r - iop_r));
++    uint64_t n =
++        (*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr,
++                                dst_palette.len, iop_r, (size_t)src_len);
++    *ptr_iop_r += n * p->private_impl.src_pixfmt_bytes_per_pixel;
++    return n;
+   }
+-  if (!a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  return 0;
++}
++
++WUFFS_BASE__MAYBE_STATIC uint64_t  //
++wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(
++    const wuffs_base__pixel_swizzler* p,
++    wuffs_base__slice_u8 dst,
++    wuffs_base__slice_u8 dst_palette,
++    wuffs_base__slice_u8 src) {
++  if (p && p->private_impl.func) {
++    return (*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr,
++                                   dst_palette.len, src.ptr, src.len);
+   }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 1)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  return 0;
++}
++
++WUFFS_BASE__MAYBE_STATIC uint64_t  //
++wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(
++    const wuffs_base__pixel_swizzler* p,
++    wuffs_base__slice_u8 dst,
++    wuffs_base__slice_u8 dst_palette,
++    uint64_t num_pixels) {
++  if (p && p->private_impl.transparent_black_func) {
++    return (*p->private_impl.transparent_black_func)(
++        dst.ptr, dst.len, dst_palette.ptr, dst_palette.len, num_pixels,
++        p->private_impl.dst_pixfmt_bytes_per_pixel);
+   }
+-  self->private_impl.active_coroutine = 0;
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++  return 0;
++}
+ 
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++// --------
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
++WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
++static void  //
++wuffs_private_impl__swizzle_ycc__convert_3_bgrx_x86_avx2(
++    wuffs_base__pixel_buffer* dst,
++    uint32_t x,
++    uint32_t x_end,
++    uint32_t y,
++    const uint8_t* up0,
++    const uint8_t* up1,
++    const uint8_t* up2);
+ 
+-    while (true) {
+-      {
+-        wuffs_base__status t_0 = wuffs_bmp__decoder__do_decode_image_config(self, a_dst, a_src);
+-        v_status = t_0;
+-      }
+-      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_bmp__error__truncated_input);
+-        goto exit;
+-      }
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+-    }
++WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
++static void  //
++wuffs_private_impl__swizzle_ycc__convert_3_rgbx_x86_avx2(
++    wuffs_base__pixel_buffer* dst,
++    uint32_t x,
++    uint32_t x_end,
++    uint32_t y,
++    const uint8_t* up0,
++    const uint8_t* up1,
++    const uint8_t* up2);
+ 
+-    ok:
+-    self->private_impl.p_decode_image_config[0] = 0;
+-    goto exit;
+-  }
++#if defined(__GNUC__) && !defined(__clang__)
++// No-op.
++#else
++WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
++static const uint8_t*  //
++wuffs_private_impl__swizzle_ycc__upsample_inv_h2v2_triangle_x86_avx2(
++    uint8_t* dst_ptr,
++    const uint8_t* src_ptr_major,
++    const uint8_t* src_ptr_minor,
++    size_t src_len,
++    uint32_t h1v2_bias_ignored,
++    bool first_column,
++    bool last_column);
++#endif
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
++// --------
+ 
+-  goto exit;
+-  exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-  }
+-  return status;
++static inline uint32_t  //
++wuffs_private_impl__u32__max_of_4(uint32_t a,
++                                  uint32_t b,
++                                  uint32_t c,
++                                  uint32_t d) {
++  return wuffs_base__u32__max(     //
++      wuffs_base__u32__max(a, b),  //
++      wuffs_base__u32__max(c, d));
+ }
+ 
+-// -------- func bmp.decoder.do_decode_image_config
++static inline uint32_t  //
++wuffs_private_impl__u32__min_of_5(uint32_t a,
++                                  uint32_t b,
++                                  uint32_t c,
++                                  uint32_t d,
++                                  uint32_t e) {
++  return wuffs_base__u32__min(          //
++      wuffs_base__u32__min(             //
++          wuffs_base__u32__min(a, b),   //
++          wuffs_base__u32__min(c, d)),  //
++      e);
++}
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bmp__decoder__do_decode_image_config(
+-    wuffs_bmp__decoder* self,
+-    wuffs_base__image_config* a_dst,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++// --------
+ 
+-  uint32_t v_magic = 0;
+-  uint32_t v_width = 0;
+-  uint32_t v_height = 0;
+-  uint32_t v_planes = 0;
+-  uint32_t v_dst_pixfmt = 0;
+-  uint32_t v_byte_width = 0;
++typedef void (*wuffs_private_impl__swizzle_ycc__convert_4_func)(
++    wuffs_base__pixel_buffer* dst,
++    uint32_t x,
++    uint32_t x_end,
++    uint32_t y,
++    const uint8_t* up0,
++    const uint8_t* up1,
++    const uint8_t* up2,
++    const uint8_t* up3);
+ 
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
++static void  //
++wuffs_private_impl__swizzle_cmyk__convert_4_general(
++    wuffs_base__pixel_buffer* dst,
++    uint32_t x,
++    uint32_t x_end,
++    uint32_t y,
++    const uint8_t* up0,
++    const uint8_t* up1,
++    const uint8_t* up2,
++    const uint8_t* up3) {
++  for (; x < x_end; x++) {
++    // It's called CMYK but, but for Adobe CMYK JPEG images in practice, it's
++    // RGBW: 0xFFu means no ink instead of full ink. Note that a double
++    // inversion is a no-op, so inversions might be implicit in the code below.
++    uint32_t r = ((uint32_t)(*up0++));
++    uint32_t g = ((uint32_t)(*up1++));
++    uint32_t b = ((uint32_t)(*up2++));
++    uint32_t w = ((uint32_t)(*up3++));
++    r = ((r * w) + 0x7Fu) / 0xFFu;
++    g = ((g * w) + 0x7Fu) / 0xFFu;
++    b = ((b * w) + 0x7Fu) / 0xFFu;
++    wuffs_base__pixel_buffer__set_color_u32_at(
++        dst, x, y, 0xFF000000u | (r << 16u) | (g << 8u) | (b << 0u));
+   }
++}
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++static void  //
++wuffs_private_impl__swizzle_ycck__convert_4_general(
++    wuffs_base__pixel_buffer* dst,
++    uint32_t x,
++    uint32_t x_end,
++    uint32_t y,
++    const uint8_t* up0,
++    const uint8_t* up1,
++    const uint8_t* up2,
++    const uint8_t* up3) {
++  for (; x < x_end; x++) {
++    // We invert once again: 0xFFu means no ink instead of full ink.
++    uint32_t color =                           //
++        wuffs_base__color_ycc__as__color_u32(  //
++            *up0++, *up1++, *up2++);
++    uint32_t r = 0xFFu - (0xFFu & (color >> 16u));
++    uint32_t g = 0xFFu - (0xFFu & (color >> 8u));
++    uint32_t b = 0xFFu - (0xFFu & (color >> 0u));
++    uint32_t w = ((uint32_t)(*up3++));
++    r = ((r * w) + 0x7Fu) / 0xFFu;
++    g = ((g * w) + 0x7Fu) / 0xFFu;
++    b = ((b * w) + 0x7Fu) / 0xFFu;
++    wuffs_base__pixel_buffer__set_color_u32_at(
++        dst, x, y, 0xFF000000u | (r << 16u) | (g << 8u) | (b << 0u));
++  }
++}
+ 
+-    if ((self->private_impl.f_call_sequence != 0u) || (self->private_impl.f_io_redirect_fourcc == 1u)) {
+-      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
+-      goto exit;
+-    } else if (self->private_impl.f_io_redirect_fourcc != 0u) {
+-      status = wuffs_base__make_status(wuffs_base__note__i_o_redirect);
+-      goto ok;
+-    }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      uint32_t t_0;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-        t_0 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-        iop_a_src += 2;
+-      } else {
+-        self->private_data.s_do_decode_image_config[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
+-          *scratch <<= 8;
+-          *scratch >>= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
+-          if (num_bits_0 == 8) {
+-            t_0 = ((uint32_t)(*scratch));
+-            break;
+-          }
+-          num_bits_0 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_0)) << 56;
+-        }
+-      }
+-      v_magic = t_0;
+-    }
+-    if (v_magic != 19778u) {
+-      status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
+-      goto exit;
+-    }
+-    self->private_data.s_do_decode_image_config[0].scratch = 8u;
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-    if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-      self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-      iop_a_src = io2_a_src;
+-      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-      goto suspend;
++// --------
++
++typedef void (*wuffs_private_impl__swizzle_ycc__convert_3_func)(
++    wuffs_base__pixel_buffer* dst,
++    uint32_t x,
++    uint32_t x_end,
++    uint32_t y,
++    const uint8_t* up0,
++    const uint8_t* up1,
++    const uint8_t* up2);
++
++static void  //
++wuffs_private_impl__swizzle_rgb__convert_3_general(
++    wuffs_base__pixel_buffer* dst,
++    uint32_t x,
++    uint32_t x_end,
++    uint32_t y,
++    const uint8_t* up0,
++    const uint8_t* up1,
++    const uint8_t* up2) {
++  for (; x < x_end; x++) {
++    uint32_t color = 0xFF000000u |                    //
++                     (((uint32_t)(*up0++)) << 16u) |  //
++                     (((uint32_t)(*up1++)) << 8u) |   //
++                     (((uint32_t)(*up2++)) << 0u);
++    wuffs_base__pixel_buffer__set_color_u32_at(dst, x, y, color);
++  }
++}
++
++static void  //
++wuffs_private_impl__swizzle_ycc__convert_3_general(
++    wuffs_base__pixel_buffer* dst,
++    uint32_t x,
++    uint32_t x_end,
++    uint32_t y,
++    const uint8_t* up0,
++    const uint8_t* up1,
++    const uint8_t* up2) {
++  for (; x < x_end; x++) {
++    uint32_t color =                           //
++        wuffs_base__color_ycc__as__color_u32(  //
++            *up0++, *up1++, *up2++);
++    wuffs_base__pixel_buffer__set_color_u32_at(dst, x, y, color);
++  }
++}
++
++static void  //
++wuffs_private_impl__swizzle_ycc__convert_3_bgrx(wuffs_base__pixel_buffer* dst,
++                                                uint32_t x,
++                                                uint32_t x_end,
++                                                uint32_t y,
++                                                const uint8_t* up0,
++                                                const uint8_t* up1,
++                                                const uint8_t* up2) {
++  size_t dst_stride = dst->private_impl.planes[0].stride;
++  uint8_t* dst_iter = dst->private_impl.planes[0].ptr +
++                      (dst_stride * ((size_t)y)) + (4u * ((size_t)x));
++
++  for (; x < x_end; x++) {
++    uint32_t color =                           //
++        wuffs_base__color_ycc__as__color_u32(  //
++            *up0++, *up1++, *up2++);
++    wuffs_base__poke_u32le__no_bounds_check(dst_iter, color);
++    dst_iter += 4u;
++  }
++}
++
++static void  //
++wuffs_private_impl__swizzle_ycc__convert_3_rgbx(wuffs_base__pixel_buffer* dst,
++                                                uint32_t x,
++                                                uint32_t x_end,
++                                                uint32_t y,
++                                                const uint8_t* up0,
++                                                const uint8_t* up1,
++                                                const uint8_t* up2) {
++  size_t dst_stride = dst->private_impl.planes[0].stride;
++  uint8_t* dst_iter = dst->private_impl.planes[0].ptr +
++                      (dst_stride * ((size_t)y)) + (4u * ((size_t)x));
++
++  for (; x < x_end; x++) {
++    uint32_t color =                                //
++        wuffs_base__color_ycc__as__color_u32_abgr(  //
++            *up0++, *up1++, *up2++);
++    wuffs_base__poke_u32le__no_bounds_check(dst_iter, color);
++    dst_iter += 4u;
++  }
++}
++
++// --------
++
++// wuffs_private_impl__swizzle_ycc__upsample_func upsamples to a destination
++// slice at least 480 (YCCK) or 672 (YCC) bytes long and whose src_len
++// (multiplied by 1, 2, 3 or 4) is positive but no more than that. This 480 or
++// 672 length is just under 1/4 or 1/3 of the scratch_buffer_2k slice length.
++// Both (480 * 4) = 1920 and (672 * 3) = 2016 are less than 2048.
++//
++// 480 and 672 are nice round numbers because a JPEG MCU is 1, 2, 3 or 4 blocks
++// wide and each block is 8 pixels wide. We have:
++//   480 = 1 * 8 * 60,   672 = 1 * 8 * 84
++//   480 = 2 * 8 * 30,   672 = 2 * 8 * 42
++//   480 = 3 * 8 * 20,   672 = 3 * 8 * 28
++//   480 = 4 * 8 * 15,   672 = 4 * 8 * 21
++//
++// Box filters are equivalent to nearest neighbor upsampling. These ignore the
++// src_ptr_minor, h1v2_bias, first_column and last_column arguments.
++//
++// Triangle filters use a 3:1 ratio (in 1 dimension), or 9:3:3:1 (in 2
++// dimensions), which is higher quality (less blocky) but also higher
++// computational effort.
++//
++// In theory, we could use triangle filters for any (inv_h, inv_v) combination.
++// In practice, matching libjpeg-turbo, we only implement it for the common
++// chroma subsampling ratios (YCC420, YCC422 or YCC440), corresponding to an
++// (inv_h, inv_v) pair of (2, 2), (2, 1) or (1, 2).
++typedef const uint8_t* (*wuffs_private_impl__swizzle_ycc__upsample_func)(
++    uint8_t* dst_ptr,
++    const uint8_t* src_ptr_major,  // Nearest row.
++    const uint8_t* src_ptr_minor,  // Adjacent row, alternating above or below.
++    size_t src_len,
++    uint32_t h1v2_bias,
++    bool first_column,
++    bool last_column);
++
++static const uint8_t*  //
++wuffs_private_impl__swizzle_ycc__upsample_inv_h1vn_box(
++    uint8_t* dst_ptr,
++    const uint8_t* src_ptr_major,
++    const uint8_t* src_ptr_minor_ignored,
++    size_t src_len,
++    uint32_t h1v2_bias_ignored,
++    bool first_column_ignored,
++    bool last_column_ignored) {
++  return src_ptr_major;
++}
++
++static const uint8_t*  //
++wuffs_private_impl__swizzle_ycc__upsample_inv_h2vn_box(
++    uint8_t* dst_ptr,
++    const uint8_t* src_ptr_major,
++    const uint8_t* src_ptr_minor_ignored,
++    size_t src_len,
++    uint32_t h1v2_bias_ignored,
++    bool first_column_ignored,
++    bool last_column_ignored) {
++  uint8_t* dp = dst_ptr;
++  const uint8_t* sp = src_ptr_major;
++  while (src_len--) {
++    uint8_t sv = *sp++;
++    *dp++ = sv;
++    *dp++ = sv;
++  }
++  return dst_ptr;
++}
++
++static const uint8_t*  //
++wuffs_private_impl__swizzle_ycc__upsample_inv_h3vn_box(
++    uint8_t* dst_ptr,
++    const uint8_t* src_ptr_major,
++    const uint8_t* src_ptr_minor_ignored,
++    size_t src_len,
++    uint32_t h1v2_bias_ignored,
++    bool first_column_ignored,
++    bool last_column_ignored) {
++  uint8_t* dp = dst_ptr;
++  const uint8_t* sp = src_ptr_major;
++  while (src_len--) {
++    uint8_t sv = *sp++;
++    *dp++ = sv;
++    *dp++ = sv;
++    *dp++ = sv;
++  }
++  return dst_ptr;
++}
++
++static const uint8_t*  //
++wuffs_private_impl__swizzle_ycc__upsample_inv_h4vn_box(
++    uint8_t* dst_ptr,
++    const uint8_t* src_ptr_major,
++    const uint8_t* src_ptr_minor_ignored,
++    size_t src_len,
++    uint32_t h1v2_bias_ignored,
++    bool first_column_ignored,
++    bool last_column_ignored) {
++  uint8_t* dp = dst_ptr;
++  const uint8_t* sp = src_ptr_major;
++  while (src_len--) {
++    uint8_t sv = *sp++;
++    *dp++ = sv;
++    *dp++ = sv;
++    *dp++ = sv;
++    *dp++ = sv;
++  }
++  return dst_ptr;
++}
++
++static const uint8_t*  //
++wuffs_private_impl__swizzle_ycc__upsample_inv_h1v2_triangle(
++    uint8_t* dst_ptr,
++    const uint8_t* src_ptr_major,
++    const uint8_t* src_ptr_minor,
++    size_t src_len,
++    uint32_t h1v2_bias,
++    bool first_column,
++    bool last_column) {
++  uint8_t* dp = dst_ptr;
++  const uint8_t* sp_major = src_ptr_major;
++  const uint8_t* sp_minor = src_ptr_minor;
++  while (src_len--) {
++    *dp++ = (uint8_t)(((3u * ((uint32_t)(*sp_major++))) +  //
++                       (1u * ((uint32_t)(*sp_minor++))) +  //
++                       h1v2_bias) >>
++                      2u);
++  }
++  return dst_ptr;
++}
++
++static const uint8_t*  //
++wuffs_private_impl__swizzle_ycc__upsample_inv_h2v1_triangle(
++    uint8_t* dst_ptr,
++    const uint8_t* src_ptr_major,
++    const uint8_t* src_ptr_minor,
++    size_t src_len,
++    uint32_t h1v2_bias_ignored,
++    bool first_column,
++    bool last_column) {
++  uint8_t* dp = dst_ptr;
++  const uint8_t* sp = src_ptr_major;
++
++  if (first_column) {
++    src_len--;
++    if ((src_len <= 0u) && last_column) {
++      uint8_t sv = *sp++;
++      *dp++ = sv;
++      *dp++ = sv;
++      return dst_ptr;
+     }
+-    iop_a_src += self->private_data.s_do_decode_image_config[0].scratch;
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-      uint32_t t_1;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-        iop_a_src += 4;
+-      } else {
+-        self->private_data.s_do_decode_image_config[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
+-          *scratch <<= 8;
+-          *scratch >>= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
+-          if (num_bits_1 == 24) {
+-            t_1 = ((uint32_t)(*scratch));
+-            break;
+-          }
+-          num_bits_1 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_1)) << 56;
+-        }
+-      }
+-      self->private_impl.f_padding = t_1;
++    uint32_t svp1 = sp[+1];
++    uint8_t sv = *sp++;
++    *dp++ = sv;
++    *dp++ = (uint8_t)(((3u * (uint32_t)sv) + svp1 + 2u) >> 2u);
++    if (src_len <= 0u) {
++      return dst_ptr;
+     }
+-    if (self->private_impl.f_padding < 14u) {
+-      status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
+-      goto exit;
++  }
++
++  if (last_column) {
++    src_len--;
++  }
++
++  for (; src_len > 0u; src_len--) {
++    uint32_t svm1 = sp[-1];
++    uint32_t svp1 = sp[+1];
++    uint32_t sv3 = 3u * (uint32_t)(*sp++);
++    *dp++ = (uint8_t)((sv3 + svm1 + 1u) >> 2u);
++    *dp++ = (uint8_t)((sv3 + svp1 + 2u) >> 2u);
++  }
++
++  if (last_column) {
++    uint32_t svm1 = sp[-1];
++    uint8_t sv = *sp++;
++    *dp++ = (uint8_t)(((3u * (uint32_t)sv) + svm1 + 1u) >> 2u);
++    *dp++ = sv;
++  }
++
++  return dst_ptr;
++}
++
++static const uint8_t*  //
++wuffs_private_impl__swizzle_ycc__upsample_inv_h2v2_triangle(
++    uint8_t* dst_ptr,
++    const uint8_t* src_ptr_major,
++    const uint8_t* src_ptr_minor,
++    size_t src_len,
++    uint32_t h1v2_bias_ignored,
++    bool first_column,
++    bool last_column) {
++  uint8_t* dp = dst_ptr;
++  const uint8_t* sp_major = src_ptr_major;
++  const uint8_t* sp_minor = src_ptr_minor;
++
++  if (first_column) {
++    src_len--;
++    if ((src_len <= 0u) && last_column) {
++      uint32_t sv = (12u * ((uint32_t)(*sp_major++))) +  //
++                    (4u * ((uint32_t)(*sp_minor++)));
++      *dp++ = (uint8_t)((sv + 8u) >> 4u);
++      *dp++ = (uint8_t)((sv + 7u) >> 4u);
++      return dst_ptr;
+     }
+-    self->private_impl.f_padding -= 14u;
+-    self->private_impl.f_io_redirect_pos = wuffs_base__u64__sat_add(((uint64_t)(self->private_impl.f_padding)), wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))));
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-      uint32_t t_2;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-        iop_a_src += 4;
+-      } else {
+-        self->private_data.s_do_decode_image_config[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-          uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
+-          *scratch <<= 8;
+-          *scratch >>= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
+-          if (num_bits_2 == 24) {
+-            t_2 = ((uint32_t)(*scratch));
+-            break;
+-          }
+-          num_bits_2 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_2)) << 56;
+-        }
+-      }
+-      self->private_impl.f_bitmap_info_len = t_2;
++
++    uint32_t sv_major_m1 = sp_major[-0];  // Clamp offset to zero.
++    uint32_t sv_minor_m1 = sp_minor[-0];  // Clamp offset to zero.
++    uint32_t sv_major_p1 = sp_major[+1];
++    uint32_t sv_minor_p1 = sp_minor[+1];
++
++    uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
++                  (3u * ((uint32_t)(*sp_minor++)));
++    *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
++    *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
++    if (src_len <= 0u) {
++      return dst_ptr;
+     }
+-    if (self->private_impl.f_padding < self->private_impl.f_bitmap_info_len) {
+-      status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
+-      goto exit;
++  }
++
++  if (last_column) {
++    src_len--;
++  }
++
++  for (; src_len > 0u; src_len--) {
++    uint32_t sv_major_m1 = sp_major[-1];
++    uint32_t sv_minor_m1 = sp_minor[-1];
++    uint32_t sv_major_p1 = sp_major[+1];
++    uint32_t sv_minor_p1 = sp_minor[+1];
++
++    uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
++                  (3u * ((uint32_t)(*sp_minor++)));
++    *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
++    *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
++  }
++
++  if (last_column) {
++    uint32_t sv_major_m1 = sp_major[-1];
++    uint32_t sv_minor_m1 = sp_minor[-1];
++    uint32_t sv_major_p1 = sp_major[+0];  // Clamp offset to zero.
++    uint32_t sv_minor_p1 = sp_minor[+0];  // Clamp offset to zero.
++
++    uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
++                  (3u * ((uint32_t)(*sp_minor++)));
++    *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
++    *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
++  }
++
++  return dst_ptr;
++}
++
++// wuffs_private_impl__swizzle_ycc__upsample_funcs is indexed by inv_h and then
++// inv_v.
++static const wuffs_private_impl__swizzle_ycc__upsample_func
++    wuffs_private_impl__swizzle_ycc__upsample_funcs[4][4] = {
++        {
++            wuffs_private_impl__swizzle_ycc__upsample_inv_h1vn_box,
++            wuffs_private_impl__swizzle_ycc__upsample_inv_h1vn_box,
++            wuffs_private_impl__swizzle_ycc__upsample_inv_h1vn_box,
++            wuffs_private_impl__swizzle_ycc__upsample_inv_h1vn_box,
++        },
++        {
++            wuffs_private_impl__swizzle_ycc__upsample_inv_h2vn_box,
++            wuffs_private_impl__swizzle_ycc__upsample_inv_h2vn_box,
++            wuffs_private_impl__swizzle_ycc__upsample_inv_h2vn_box,
++            wuffs_private_impl__swizzle_ycc__upsample_inv_h2vn_box,
++        },
++        {
++            wuffs_private_impl__swizzle_ycc__upsample_inv_h3vn_box,
++            wuffs_private_impl__swizzle_ycc__upsample_inv_h3vn_box,
++            wuffs_private_impl__swizzle_ycc__upsample_inv_h3vn_box,
++            wuffs_private_impl__swizzle_ycc__upsample_inv_h3vn_box,
++        },
++        {
++            wuffs_private_impl__swizzle_ycc__upsample_inv_h4vn_box,
++            wuffs_private_impl__swizzle_ycc__upsample_inv_h4vn_box,
++            wuffs_private_impl__swizzle_ycc__upsample_inv_h4vn_box,
++            wuffs_private_impl__swizzle_ycc__upsample_inv_h4vn_box,
++        },
++};
++
++static inline uint32_t  //
++wuffs_private_impl__swizzle_has_triangle_upsampler(uint32_t inv_h,
++                                                   uint32_t inv_v) {
++  if (inv_h == 1u) {
++    return inv_v == 2u;
++  } else if (inv_h == 2u) {
++    return (inv_v == 1u) || (inv_v == 2u);
++  }
++  return false;
++}
++
++// --------
++
++// All of the wuffs_private_impl__swizzle_ycc__etc functions have
++// preconditions. See all of the checks made in
++// wuffs_base__pixel_swizzler__swizzle_ycck before calling these functions. For
++// example, (width > 0) is a precondition, but there are many more.
++
++static void  //
++wuffs_private_impl__swizzle_ycck__general__triangle_filter_edge_row(
++    wuffs_base__pixel_buffer* dst,
++    uint32_t width,
++    uint32_t y,
++    const uint8_t* src_ptr0,
++    const uint8_t* src_ptr1,
++    const uint8_t* src_ptr2,
++    const uint8_t* src_ptr3,
++    uint32_t stride0,
++    uint32_t stride1,
++    uint32_t stride2,
++    uint32_t stride3,
++    uint32_t inv_h0,
++    uint32_t inv_h1,
++    uint32_t inv_h2,
++    uint32_t inv_h3,
++    uint32_t inv_v0,
++    uint32_t inv_v1,
++    uint32_t inv_v2,
++    uint32_t inv_v3,
++    uint32_t half_width_for_2to1,
++    uint32_t h1v2_bias,
++    uint8_t* scratch_buffer_2k_ptr,
++    wuffs_private_impl__swizzle_ycc__upsample_func upfunc0,
++    wuffs_private_impl__swizzle_ycc__upsample_func upfunc1,
++    wuffs_private_impl__swizzle_ycc__upsample_func upfunc2,
++    wuffs_private_impl__swizzle_ycc__upsample_func upfunc3,
++    wuffs_private_impl__swizzle_ycc__convert_4_func conv4func) {
++  const uint8_t* src0 = src_ptr0 + ((y / inv_v0) * (size_t)stride0);
++  const uint8_t* src1 = src_ptr1 + ((y / inv_v1) * (size_t)stride1);
++  const uint8_t* src2 = src_ptr2 + ((y / inv_v2) * (size_t)stride2);
++  const uint8_t* src3 = src_ptr3 + ((y / inv_v3) * (size_t)stride3);
++  uint32_t total_src_len0 = 0u;
++  uint32_t total_src_len1 = 0u;
++  uint32_t total_src_len2 = 0u;
++  uint32_t total_src_len3 = 0u;
++
++  uint32_t x = 0u;
++  while (x < width) {
++    bool first_column = x == 0u;
++    uint32_t end = x + 480u;
++    if (end > width) {
++      end = width;
+     }
+-    self->private_impl.f_padding -= self->private_impl.f_bitmap_info_len;
+-    if (self->private_impl.f_bitmap_info_len == 12u) {
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
+-        uint32_t t_3;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-          t_3 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-          iop_a_src += 2;
+-        } else {
+-          self->private_data.s_do_decode_image_config[0].scratch = 0;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-            uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
+-            *scratch <<= 8;
+-            *scratch >>= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
+-            if (num_bits_3 == 8) {
+-              t_3 = ((uint32_t)(*scratch));
+-              break;
+-            }
+-            num_bits_3 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_3)) << 56;
+-          }
+-        }
+-        self->private_impl.f_width = t_3;
++
++    uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0;
++    uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1;
++    uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2;
++    uint32_t src_len3 = ((end - x) + inv_h3 - 1u) / inv_h3;
++    total_src_len0 += src_len0;
++    total_src_len1 += src_len1;
++    total_src_len2 += src_len2;
++    total_src_len3 += src_len3;
++
++    const uint8_t* src_ptr_x0 = src0 + (x / inv_h0);
++    const uint8_t* up0 = (*upfunc0)(          //
++        scratch_buffer_2k_ptr + (0u * 480u),  //
++        src_ptr_x0,                           //
++        src_ptr_x0,                           //
++        src_len0,                             //
++        h1v2_bias,                            //
++        first_column,                         //
++        (total_src_len0 >= half_width_for_2to1));
++
++    const uint8_t* src_ptr_x1 = src1 + (x / inv_h1);
++    const uint8_t* up1 = (*upfunc1)(          //
++        scratch_buffer_2k_ptr + (1u * 480u),  //
++        src_ptr_x1,                           //
++        src_ptr_x1,                           //
++        src_len1,                             //
++        h1v2_bias,                            //
++        first_column,                         //
++        (total_src_len1 >= half_width_for_2to1));
++
++    const uint8_t* src_ptr_x2 = src2 + (x / inv_h2);
++    const uint8_t* up2 = (*upfunc2)(          //
++        scratch_buffer_2k_ptr + (2u * 480u),  //
++        src_ptr_x2,                           //
++        src_ptr_x2,                           //
++        src_len2,                             //
++        h1v2_bias,                            //
++        first_column,                         //
++        (total_src_len2 >= half_width_for_2to1));
++
++    const uint8_t* src_ptr_x3 = src3 + (x / inv_h3);
++    const uint8_t* up3 = (*upfunc3)(          //
++        scratch_buffer_2k_ptr + (3u * 480u),  //
++        src_ptr_x3,                           //
++        src_ptr_x3,                           //
++        src_len3,                             //
++        h1v2_bias,                            //
++        first_column,                         //
++        (total_src_len3 >= half_width_for_2to1));
++
++    (*conv4func)(dst, x, end, y, up0, up1, up2, up3);
++    x = end;
++  }
++}
++
++static void  //
++wuffs_private_impl__swizzle_ycck__general__triangle_filter(
++    wuffs_base__pixel_buffer* dst,
++    uint32_t x_min_incl,
++    uint32_t x_max_excl,
++    uint32_t y_min_incl,
++    uint32_t y_max_excl,
++    const uint8_t* src_ptr0,
++    const uint8_t* src_ptr1,
++    const uint8_t* src_ptr2,
++    const uint8_t* src_ptr3,
++    uint32_t stride0,
++    uint32_t stride1,
++    uint32_t stride2,
++    uint32_t stride3,
++    uint32_t inv_h0,
++    uint32_t inv_h1,
++    uint32_t inv_h2,
++    uint32_t inv_h3,
++    uint32_t inv_v0,
++    uint32_t inv_v1,
++    uint32_t inv_v2,
++    uint32_t inv_v3,
++    uint32_t half_width_for_2to1,
++    uint32_t half_height_for_2to1,
++    uint8_t* scratch_buffer_2k_ptr,
++    wuffs_private_impl__swizzle_ycc__upsample_func (*upfuncs)[4][4],
++    wuffs_private_impl__swizzle_ycc__convert_4_func conv4func) {
++  if ((x_min_incl != 0) || (y_min_incl != 0)) {
++    return;
++  }
++
++  wuffs_private_impl__swizzle_ycc__upsample_func upfunc0 =
++      (*upfuncs)[(inv_h0 - 1u) & 3u][(inv_v0 - 1u) & 3u];
++  wuffs_private_impl__swizzle_ycc__upsample_func upfunc1 =
++      (*upfuncs)[(inv_h1 - 1u) & 3u][(inv_v1 - 1u) & 3u];
++  wuffs_private_impl__swizzle_ycc__upsample_func upfunc2 =
++      (*upfuncs)[(inv_h2 - 1u) & 3u][(inv_v2 - 1u) & 3u];
++  wuffs_private_impl__swizzle_ycc__upsample_func upfunc3 =
++      (*upfuncs)[(inv_h3 - 1u) & 3u][(inv_v3 - 1u) & 3u];
++
++  // First row.
++  uint32_t h1v2_bias = 1u;
++  wuffs_private_impl__swizzle_ycck__general__triangle_filter_edge_row(
++      dst, x_max_excl, 0u,                     //
++      src_ptr0, src_ptr1, src_ptr2, src_ptr3,  //
++      stride0, stride1, stride2, stride3,      //
++      inv_h0, inv_h1, inv_h2, inv_h3,          //
++      inv_v0, inv_v1, inv_v2, inv_v3,          //
++      half_width_for_2to1,                     //
++      h1v2_bias,                               //
++      scratch_buffer_2k_ptr,                   //
++      upfunc0, upfunc1, upfunc2, upfunc3, conv4func);
++  h1v2_bias = 2u;
++
++  // Middle rows.
++  bool last_row = y_max_excl == 2u * half_height_for_2to1;
++  uint32_t middle_y_max_excl = last_row ? (y_max_excl - 1u) : y_max_excl;
++  uint32_t y;
++  for (y = 1u; y < middle_y_max_excl; y++) {
++    const uint8_t* src0_major = src_ptr0 + ((y / inv_v0) * (size_t)stride0);
++    const uint8_t* src0_minor =
++        (inv_v0 != 2u)
++            ? src0_major
++            : ((y & 1u) ? (src0_major + stride0) : (src0_major - stride0));
++    const uint8_t* src1_major = src_ptr1 + ((y / inv_v1) * (size_t)stride1);
++    const uint8_t* src1_minor =
++        (inv_v1 != 2u)
++            ? src1_major
++            : ((y & 1u) ? (src1_major + stride1) : (src1_major - stride1));
++    const uint8_t* src2_major = src_ptr2 + ((y / inv_v2) * (size_t)stride2);
++    const uint8_t* src2_minor =
++        (inv_v2 != 2u)
++            ? src2_major
++            : ((y & 1u) ? (src2_major + stride2) : (src2_major - stride2));
++    const uint8_t* src3_major = src_ptr3 + ((y / inv_v3) * (size_t)stride3);
++    const uint8_t* src3_minor =
++        (inv_v3 != 2u)
++            ? src3_major
++            : ((y & 1u) ? (src3_major + stride3) : (src3_major - stride3));
++    uint32_t total_src_len0 = 0u;
++    uint32_t total_src_len1 = 0u;
++    uint32_t total_src_len2 = 0u;
++    uint32_t total_src_len3 = 0u;
++
++    uint32_t x = 0u;
++    while (x < x_max_excl) {
++      bool first_column = x == 0u;
++      uint32_t end = x + 480u;
++      if (end > x_max_excl) {
++        end = x_max_excl;
+       }
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
+-        uint32_t t_4;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-          t_4 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-          iop_a_src += 2;
+-        } else {
+-          self->private_data.s_do_decode_image_config[0].scratch = 0;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-            uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
+-            *scratch <<= 8;
+-            *scratch >>= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
+-            if (num_bits_4 == 8) {
+-              t_4 = ((uint32_t)(*scratch));
+-              break;
+-            }
+-            num_bits_4 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_4)) << 56;
+-          }
+-        }
+-        self->private_impl.f_height = t_4;
++
++      uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0;
++      uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1;
++      uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2;
++      uint32_t src_len3 = ((end - x) + inv_h3 - 1u) / inv_h3;
++      total_src_len0 += src_len0;
++      total_src_len1 += src_len1;
++      total_src_len2 += src_len2;
++      total_src_len3 += src_len3;
++
++      const uint8_t* up0 = (*upfunc0)(          //
++          scratch_buffer_2k_ptr + (0u * 480u),  //
++          src0_major + (x / inv_h0),            //
++          src0_minor + (x / inv_h0),            //
++          src_len0,                             //
++          h1v2_bias,                            //
++          first_column,                         //
++          (total_src_len0 >= half_width_for_2to1));
++
++      const uint8_t* up1 = (*upfunc1)(          //
++          scratch_buffer_2k_ptr + (1u * 480u),  //
++          src1_major + (x / inv_h1),            //
++          src1_minor + (x / inv_h1),            //
++          src_len1,                             //
++          h1v2_bias,                            //
++          first_column,                         //
++          (total_src_len1 >= half_width_for_2to1));
++
++      const uint8_t* up2 = (*upfunc2)(          //
++          scratch_buffer_2k_ptr + (2u * 480u),  //
++          src2_major + (x / inv_h2),            //
++          src2_minor + (x / inv_h2),            //
++          src_len2,                             //
++          h1v2_bias,                            //
++          first_column,                         //
++          (total_src_len2 >= half_width_for_2to1));
++
++      const uint8_t* up3 = (*upfunc3)(          //
++          scratch_buffer_2k_ptr + (3u * 480u),  //
++          src3_major + (x / inv_h3),            //
++          src3_minor + (x / inv_h3),            //
++          src_len3,                             //
++          h1v2_bias,                            //
++          first_column,                         //
++          (total_src_len3 >= half_width_for_2to1));
++
++      (*conv4func)(dst, x, end, y, up0, up1, up2, up3);
++      x = end;
++    }
++
++    h1v2_bias ^= 3u;
++  }
++
++  // Last row.
++  if (middle_y_max_excl != y_max_excl) {
++    wuffs_private_impl__swizzle_ycck__general__triangle_filter_edge_row(
++        dst, x_max_excl, middle_y_max_excl,      //
++        src_ptr0, src_ptr1, src_ptr2, src_ptr3,  //
++        stride0, stride1, stride2, stride3,      //
++        inv_h0, inv_h1, inv_h2, inv_h3,          //
++        inv_v0, inv_v1, inv_v2, inv_v3,          //
++        half_width_for_2to1,                     //
++        h1v2_bias,                               //
++        scratch_buffer_2k_ptr,                   //
++        upfunc0, upfunc1, upfunc2, upfunc3, conv4func);
++  }
++}
++
++static void  //
++wuffs_private_impl__swizzle_ycc__general__triangle_filter_edge_row(
++    wuffs_base__pixel_buffer* dst,
++    uint32_t width,
++    uint32_t y,
++    const uint8_t* src_ptr0,
++    const uint8_t* src_ptr1,
++    const uint8_t* src_ptr2,
++    uint32_t stride0,
++    uint32_t stride1,
++    uint32_t stride2,
++    uint32_t inv_h0,
++    uint32_t inv_h1,
++    uint32_t inv_h2,
++    uint32_t inv_v0,
++    uint32_t inv_v1,
++    uint32_t inv_v2,
++    uint32_t half_width_for_2to1,
++    uint32_t h1v2_bias,
++    uint8_t* scratch_buffer_2k_ptr,
++    wuffs_private_impl__swizzle_ycc__upsample_func upfunc0,
++    wuffs_private_impl__swizzle_ycc__upsample_func upfunc1,
++    wuffs_private_impl__swizzle_ycc__upsample_func upfunc2,
++    wuffs_private_impl__swizzle_ycc__convert_3_func conv3func) {
++  const uint8_t* src0 = src_ptr0 + ((y / inv_v0) * (size_t)stride0);
++  const uint8_t* src1 = src_ptr1 + ((y / inv_v1) * (size_t)stride1);
++  const uint8_t* src2 = src_ptr2 + ((y / inv_v2) * (size_t)stride2);
++  uint32_t total_src_len0 = 0u;
++  uint32_t total_src_len1 = 0u;
++  uint32_t total_src_len2 = 0u;
++
++  uint32_t x = 0u;
++  while (x < width) {
++    bool first_column = x == 0u;
++    uint32_t end = x + 672u;
++    if (end > width) {
++      end = width;
++    }
++
++    uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0;
++    uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1;
++    uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2;
++    total_src_len0 += src_len0;
++    total_src_len1 += src_len1;
++    total_src_len2 += src_len2;
++
++    const uint8_t* src_ptr_x0 = src0 + (x / inv_h0);
++    const uint8_t* up0 = (*upfunc0)(          //
++        scratch_buffer_2k_ptr + (0u * 672u),  //
++        src_ptr_x0,                           //
++        src_ptr_x0,                           //
++        src_len0,                             //
++        h1v2_bias,                            //
++        first_column,                         //
++        (total_src_len0 >= half_width_for_2to1));
++
++    const uint8_t* src_ptr_x1 = src1 + (x / inv_h1);
++    const uint8_t* up1 = (*upfunc1)(          //
++        scratch_buffer_2k_ptr + (1u * 672u),  //
++        src_ptr_x1,                           //
++        src_ptr_x1,                           //
++        src_len1,                             //
++        h1v2_bias,                            //
++        first_column,                         //
++        (total_src_len1 >= half_width_for_2to1));
++
++    const uint8_t* src_ptr_x2 = src2 + (x / inv_h2);
++    const uint8_t* up2 = (*upfunc2)(          //
++        scratch_buffer_2k_ptr + (2u * 672u),  //
++        src_ptr_x2,                           //
++        src_ptr_x2,                           //
++        src_len2,                             //
++        h1v2_bias,                            //
++        first_column,                         //
++        (total_src_len2 >= half_width_for_2to1));
++
++    (*conv3func)(dst, x, end, y, up0, up1, up2);
++    x = end;
++  }
++}
++
++static void  //
++wuffs_private_impl__swizzle_ycc__general__triangle_filter(
++    wuffs_base__pixel_buffer* dst,
++    uint32_t x_min_incl,
++    uint32_t x_max_excl,
++    uint32_t y_min_incl,
++    uint32_t y_max_excl,
++    const uint8_t* src_ptr0,
++    const uint8_t* src_ptr1,
++    const uint8_t* src_ptr2,
++    uint32_t stride0,
++    uint32_t stride1,
++    uint32_t stride2,
++    uint32_t inv_h0,
++    uint32_t inv_h1,
++    uint32_t inv_h2,
++    uint32_t inv_v0,
++    uint32_t inv_v1,
++    uint32_t inv_v2,
++    uint32_t half_width_for_2to1,
++    uint32_t half_height_for_2to1,
++    uint8_t* scratch_buffer_2k_ptr,
++    wuffs_private_impl__swizzle_ycc__upsample_func (*upfuncs)[4][4],
++    wuffs_private_impl__swizzle_ycc__convert_3_func conv3func) {
++  if ((x_min_incl != 0) || (y_min_incl != 0)) {
++    return;
++  }
++
++  wuffs_private_impl__swizzle_ycc__upsample_func upfunc0 =
++      (*upfuncs)[(inv_h0 - 1u) & 3u][(inv_v0 - 1u) & 3u];
++  wuffs_private_impl__swizzle_ycc__upsample_func upfunc1 =
++      (*upfuncs)[(inv_h1 - 1u) & 3u][(inv_v1 - 1u) & 3u];
++  wuffs_private_impl__swizzle_ycc__upsample_func upfunc2 =
++      (*upfuncs)[(inv_h2 - 1u) & 3u][(inv_v2 - 1u) & 3u];
++
++  // First row.
++  uint32_t h1v2_bias = 1u;
++  wuffs_private_impl__swizzle_ycc__general__triangle_filter_edge_row(
++      dst, x_max_excl, 0u,           //
++      src_ptr0, src_ptr1, src_ptr2,  //
++      stride0, stride1, stride2,     //
++      inv_h0, inv_h1, inv_h2,        //
++      inv_v0, inv_v1, inv_v2,        //
++      half_width_for_2to1,           //
++      h1v2_bias,                     //
++      scratch_buffer_2k_ptr,         //
++      upfunc0, upfunc1, upfunc2, conv3func);
++  h1v2_bias = 2u;
++
++  // Middle rows.
++  bool last_row = y_max_excl == 2u * half_height_for_2to1;
++  uint32_t middle_y_max_excl = last_row ? (y_max_excl - 1u) : y_max_excl;
++  uint32_t y;
++  for (y = 1u; y < middle_y_max_excl; y++) {
++    const uint8_t* src0_major = src_ptr0 + ((y / inv_v0) * (size_t)stride0);
++    const uint8_t* src0_minor =
++        (inv_v0 != 2u)
++            ? src0_major
++            : ((y & 1u) ? (src0_major + stride0) : (src0_major - stride0));
++    const uint8_t* src1_major = src_ptr1 + ((y / inv_v1) * (size_t)stride1);
++    const uint8_t* src1_minor =
++        (inv_v1 != 2u)
++            ? src1_major
++            : ((y & 1u) ? (src1_major + stride1) : (src1_major - stride1));
++    const uint8_t* src2_major = src_ptr2 + ((y / inv_v2) * (size_t)stride2);
++    const uint8_t* src2_minor =
++        (inv_v2 != 2u)
++            ? src2_major
++            : ((y & 1u) ? (src2_major + stride2) : (src2_major - stride2));
++    uint32_t total_src_len0 = 0u;
++    uint32_t total_src_len1 = 0u;
++    uint32_t total_src_len2 = 0u;
++
++    uint32_t x = 0u;
++    while (x < x_max_excl) {
++      bool first_column = x == 0u;
++      uint32_t end = x + 672u;
++      if (end > x_max_excl) {
++        end = x_max_excl;
+       }
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
+-        uint32_t t_5;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-          t_5 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-          iop_a_src += 2;
+-        } else {
+-          self->private_data.s_do_decode_image_config[0].scratch = 0;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-            uint32_t num_bits_5 = ((uint32_t)(*scratch >> 56));
+-            *scratch <<= 8;
+-            *scratch >>= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_5;
+-            if (num_bits_5 == 8) {
+-              t_5 = ((uint32_t)(*scratch));
+-              break;
+-            }
+-            num_bits_5 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_5)) << 56;
+-          }
+-        }
+-        v_planes = t_5;
++
++      uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0;
++      uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1;
++      uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2;
++      total_src_len0 += src_len0;
++      total_src_len1 += src_len1;
++      total_src_len2 += src_len2;
++
++      const uint8_t* up0 = (*upfunc0)(          //
++          scratch_buffer_2k_ptr + (0u * 672u),  //
++          src0_major + (x / inv_h0),            //
++          src0_minor + (x / inv_h0),            //
++          src_len0,                             //
++          h1v2_bias,                            //
++          first_column,                         //
++          (total_src_len0 >= half_width_for_2to1));
++
++      const uint8_t* up1 = (*upfunc1)(          //
++          scratch_buffer_2k_ptr + (1u * 672u),  //
++          src1_major + (x / inv_h1),            //
++          src1_minor + (x / inv_h1),            //
++          src_len1,                             //
++          h1v2_bias,                            //
++          first_column,                         //
++          (total_src_len1 >= half_width_for_2to1));
++
++      const uint8_t* up2 = (*upfunc2)(          //
++          scratch_buffer_2k_ptr + (2u * 672u),  //
++          src2_major + (x / inv_h2),            //
++          src2_minor + (x / inv_h2),            //
++          src_len2,                             //
++          h1v2_bias,                            //
++          first_column,                         //
++          (total_src_len2 >= half_width_for_2to1));
++
++      (*conv3func)(dst, x, end, y, up0, up1, up2);
++      x = end;
++    }
++
++    h1v2_bias ^= 3u;
++  }
++
++  // Last row.
++  if (middle_y_max_excl != y_max_excl) {
++    wuffs_private_impl__swizzle_ycc__general__triangle_filter_edge_row(
++        dst, x_max_excl, middle_y_max_excl,  //
++        src_ptr0, src_ptr1, src_ptr2,        //
++        stride0, stride1, stride2,           //
++        inv_h0, inv_h1, inv_h2,              //
++        inv_v0, inv_v1, inv_v2,              //
++        half_width_for_2to1,                 //
++        h1v2_bias,                           //
++        scratch_buffer_2k_ptr,               //
++        upfunc0, upfunc1, upfunc2, conv3func);
++  }
++}
++
++static void  //
++wuffs_private_impl__swizzle_ycc__general__box_filter(
++    wuffs_base__pixel_buffer* dst,
++    uint32_t x_min_incl,
++    uint32_t x_max_excl,
++    uint32_t y_min_incl,
++    uint32_t y_max_excl,
++    const uint8_t* src_ptr0,
++    const uint8_t* src_ptr1,
++    const uint8_t* src_ptr2,
++    uint32_t stride0,
++    uint32_t stride1,
++    uint32_t stride2,
++    uint32_t inv_h0,
++    uint32_t inv_h1,
++    uint32_t inv_h2,
++    uint32_t inv_v0,
++    uint32_t inv_v1,
++    uint32_t inv_v2,
++    uint32_t half_width_for_2to1,
++    uint32_t half_height_for_2to1,
++    uint8_t* scratch_buffer_2k_ptr,
++    wuffs_private_impl__swizzle_ycc__upsample_func (*upfuncs)[4][4],
++    wuffs_private_impl__swizzle_ycc__convert_3_func conv3func) {
++  wuffs_private_impl__swizzle_ycc__upsample_func upfunc0 =
++      (*upfuncs)[(inv_h0 - 1u) & 3u][(inv_v0 - 1u) & 3u];
++  wuffs_private_impl__swizzle_ycc__upsample_func upfunc1 =
++      (*upfuncs)[(inv_h1 - 1u) & 3u][(inv_v1 - 1u) & 3u];
++  wuffs_private_impl__swizzle_ycc__upsample_func upfunc2 =
++      (*upfuncs)[(inv_h2 - 1u) & 3u][(inv_v2 - 1u) & 3u];
++
++  uint32_t y;
++  for (y = y_min_incl; y < y_max_excl; y++) {
++    const uint8_t* src0_major =
++        src_ptr0 + (((y - y_min_incl) / inv_v0) * (size_t)stride0);
++    const uint8_t* src1_major =
++        src_ptr1 + (((y - y_min_incl) / inv_v1) * (size_t)stride1);
++    const uint8_t* src2_major =
++        src_ptr2 + (((y - y_min_incl) / inv_v2) * (size_t)stride2);
++
++    uint32_t x = x_min_incl;
++    while (x < x_max_excl) {
++      uint32_t end = x + 672u;
++      if (end > x_max_excl) {
++        end = x_max_excl;
+       }
+-      if (v_planes != 1u) {
+-        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
+-        goto exit;
++
++      uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0;
++      uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1;
++      uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2;
++
++      const uint8_t* up0 = (*upfunc0)(               //
++          scratch_buffer_2k_ptr + (0u * 672u),       //
++          src0_major + ((x - x_min_incl) / inv_h0),  //
++          src0_major + ((x - x_min_incl) / inv_h0),  //
++          src_len0,                                  //
++          0u, false, false);
++
++      const uint8_t* up1 = (*upfunc1)(               //
++          scratch_buffer_2k_ptr + (1u * 672u),       //
++          src1_major + ((x - x_min_incl) / inv_h1),  //
++          src1_major + ((x - x_min_incl) / inv_h1),  //
++          src_len1,                                  //
++          0u, false, false);
++
++      const uint8_t* up2 = (*upfunc2)(               //
++          scratch_buffer_2k_ptr + (2u * 672u),       //
++          src2_major + ((x - x_min_incl) / inv_h2),  //
++          src2_major + ((x - x_min_incl) / inv_h2),  //
++          src_len2,                                  //
++          0u, false, false);
++
++      (*conv3func)(dst, x, end, y, up0, up1, up2);
++      x = end;
++    }
++  }
++}
++
++static void  //
++wuffs_private_impl__swizzle_ycck__general__box_filter(
++    wuffs_base__pixel_buffer* dst,
++    uint32_t x_min_incl,
++    uint32_t x_max_excl,
++    uint32_t y_min_incl,
++    uint32_t y_max_excl,
++    const uint8_t* src_ptr0,
++    const uint8_t* src_ptr1,
++    const uint8_t* src_ptr2,
++    const uint8_t* src_ptr3,
++    uint32_t stride0,
++    uint32_t stride1,
++    uint32_t stride2,
++    uint32_t stride3,
++    uint32_t inv_h0,
++    uint32_t inv_h1,
++    uint32_t inv_h2,
++    uint32_t inv_h3,
++    uint32_t inv_v0,
++    uint32_t inv_v1,
++    uint32_t inv_v2,
++    uint32_t inv_v3,
++    uint32_t half_width_for_2to1,
++    uint32_t half_height_for_2to1,
++    uint8_t* scratch_buffer_2k_ptr,
++    wuffs_private_impl__swizzle_ycc__upsample_func (*upfuncs)[4][4],
++    wuffs_private_impl__swizzle_ycc__convert_4_func conv4func) {
++  wuffs_private_impl__swizzle_ycc__upsample_func upfunc0 =
++      (*upfuncs)[(inv_h0 - 1u) & 3u][(inv_v0 - 1u) & 3u];
++  wuffs_private_impl__swizzle_ycc__upsample_func upfunc1 =
++      (*upfuncs)[(inv_h1 - 1u) & 3u][(inv_v1 - 1u) & 3u];
++  wuffs_private_impl__swizzle_ycc__upsample_func upfunc2 =
++      (*upfuncs)[(inv_h2 - 1u) & 3u][(inv_v2 - 1u) & 3u];
++  wuffs_private_impl__swizzle_ycc__upsample_func upfunc3 =
++      (*upfuncs)[(inv_h3 - 1u) & 3u][(inv_v3 - 1u) & 3u];
++
++  uint32_t y;
++  for (y = y_min_incl; y < y_max_excl; y++) {
++    const uint8_t* src0_major =
++        src_ptr0 + (((y - y_min_incl) / inv_v0) * (size_t)stride0);
++    const uint8_t* src1_major =
++        src_ptr1 + (((y - y_min_incl) / inv_v1) * (size_t)stride1);
++    const uint8_t* src2_major =
++        src_ptr2 + (((y - y_min_incl) / inv_v2) * (size_t)stride2);
++    const uint8_t* src3_major =
++        src_ptr3 + (((y - y_min_incl) / inv_v3) * (size_t)stride3);
++
++    uint32_t x = x_min_incl;
++    while (x < x_max_excl) {
++      uint32_t end = x + 480u;
++      if (end > x_max_excl) {
++        end = x_max_excl;
+       }
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
+-        uint32_t t_6;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-          t_6 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-          iop_a_src += 2;
+-        } else {
+-          self->private_data.s_do_decode_image_config[0].scratch = 0;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-            uint32_t num_bits_6 = ((uint32_t)(*scratch >> 56));
+-            *scratch <<= 8;
+-            *scratch >>= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_6;
+-            if (num_bits_6 == 8) {
+-              t_6 = ((uint32_t)(*scratch));
+-              break;
+-            }
+-            num_bits_6 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_6)) << 56;
+-          }
+-        }
+-        self->private_impl.f_bits_per_pixel = t_6;
+-      }
+-    } else if (self->private_impl.f_bitmap_info_len == 16u) {
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
+-        uint32_t t_7;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-          t_7 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-          iop_a_src += 4;
+-        } else {
+-          self->private_data.s_do_decode_image_config[0].scratch = 0;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(17);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-            uint32_t num_bits_7 = ((uint32_t)(*scratch >> 56));
+-            *scratch <<= 8;
+-            *scratch >>= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_7;
+-            if (num_bits_7 == 24) {
+-              t_7 = ((uint32_t)(*scratch));
+-              break;
+-            }
+-            num_bits_7 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_7)) << 56;
+-          }
+-        }
+-        v_width = t_7;
+-      }
+-      if (v_width > 2147483647u) {
+-        status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
+-        goto exit;
+-      } else if (v_width > 16777215u) {
+-        status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
+-        goto exit;
+-      }
+-      self->private_impl.f_width = v_width;
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(18);
+-        uint32_t t_8;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-          t_8 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-          iop_a_src += 4;
+-        } else {
+-          self->private_data.s_do_decode_image_config[0].scratch = 0;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(19);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-            uint32_t num_bits_8 = ((uint32_t)(*scratch >> 56));
+-            *scratch <<= 8;
+-            *scratch >>= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_8;
+-            if (num_bits_8 == 24) {
+-              t_8 = ((uint32_t)(*scratch));
+-              break;
+-            }
+-            num_bits_8 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_8)) << 56;
+-          }
+-        }
+-        v_height = t_8;
+-      }
+-      if (v_height > 2147483647u) {
+-        status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
+-        goto exit;
+-      } else if (v_height > 16777215u) {
+-        status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
+-        goto exit;
+-      }
+-      self->private_impl.f_height = v_height;
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(20);
+-        uint32_t t_9;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-          t_9 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-          iop_a_src += 2;
+-        } else {
+-          self->private_data.s_do_decode_image_config[0].scratch = 0;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(21);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-            uint32_t num_bits_9 = ((uint32_t)(*scratch >> 56));
+-            *scratch <<= 8;
+-            *scratch >>= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_9;
+-            if (num_bits_9 == 8) {
+-              t_9 = ((uint32_t)(*scratch));
+-              break;
+-            }
+-            num_bits_9 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_9)) << 56;
+-          }
+-        }
+-        v_planes = t_9;
+-      }
+-      if (v_planes != 1u) {
+-        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
+-        goto exit;
+-      }
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22);
+-        uint32_t t_10;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-          t_10 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-          iop_a_src += 2;
+-        } else {
+-          self->private_data.s_do_decode_image_config[0].scratch = 0;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(23);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-            uint32_t num_bits_10 = ((uint32_t)(*scratch >> 56));
+-            *scratch <<= 8;
+-            *scratch >>= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_10;
+-            if (num_bits_10 == 8) {
+-              t_10 = ((uint32_t)(*scratch));
+-              break;
+-            }
+-            num_bits_10 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_10)) << 56;
+-          }
+-        }
+-        self->private_impl.f_bits_per_pixel = t_10;
+-      }
+-    } else {
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(24);
+-        uint32_t t_11;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-          t_11 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-          iop_a_src += 4;
+-        } else {
+-          self->private_data.s_do_decode_image_config[0].scratch = 0;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(25);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-            uint32_t num_bits_11 = ((uint32_t)(*scratch >> 56));
+-            *scratch <<= 8;
+-            *scratch >>= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_11;
+-            if (num_bits_11 == 24) {
+-              t_11 = ((uint32_t)(*scratch));
+-              break;
+-            }
+-            num_bits_11 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_11)) << 56;
+-          }
+-        }
+-        v_width = t_11;
+-      }
+-      if (v_width > 2147483647u) {
+-        status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
+-        goto exit;
+-      } else if (v_width > 16777215u) {
+-        status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
+-        goto exit;
+-      }
+-      self->private_impl.f_width = v_width;
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(26);
+-        uint32_t t_12;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-          t_12 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-          iop_a_src += 4;
+-        } else {
+-          self->private_data.s_do_decode_image_config[0].scratch = 0;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(27);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-            uint32_t num_bits_12 = ((uint32_t)(*scratch >> 56));
+-            *scratch <<= 8;
+-            *scratch >>= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_12;
+-            if (num_bits_12 == 24) {
+-              t_12 = ((uint32_t)(*scratch));
+-              break;
+-            }
+-            num_bits_12 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_12)) << 56;
+-          }
+-        }
+-        v_height = t_12;
+-      }
+-      if (v_height == 2147483648u) {
+-        status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
+-        goto exit;
+-      } else if (v_height > 2147483648u) {
+-        v_height = ((uint32_t)(0u - v_height));
+-        if (v_height > 16777215u) {
+-          status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
+-          goto exit;
+-        }
+-        self->private_impl.f_height = v_height;
+-        self->private_impl.f_top_down = true;
+-      } else if (v_height > 16777215u) {
+-        status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
+-        goto exit;
+-      } else {
+-        self->private_impl.f_height = v_height;
+-      }
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(28);
+-        uint32_t t_13;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-          t_13 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-          iop_a_src += 2;
+-        } else {
+-          self->private_data.s_do_decode_image_config[0].scratch = 0;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(29);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-            uint32_t num_bits_13 = ((uint32_t)(*scratch >> 56));
+-            *scratch <<= 8;
+-            *scratch >>= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_13;
+-            if (num_bits_13 == 8) {
+-              t_13 = ((uint32_t)(*scratch));
+-              break;
+-            }
+-            num_bits_13 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_13)) << 56;
+-          }
++
++      uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0;
++      uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1;
++      uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2;
++      uint32_t src_len3 = ((end - x) + inv_h3 - 1u) / inv_h3;
++
++      const uint8_t* up0 = (*upfunc0)(               //
++          scratch_buffer_2k_ptr + (0u * 480u),       //
++          src0_major + ((x - x_min_incl) / inv_h0),  //
++          src0_major + ((x - x_min_incl) / inv_h0),  //
++          src_len0,                                  //
++          0u, false, false);
++
++      const uint8_t* up1 = (*upfunc1)(               //
++          scratch_buffer_2k_ptr + (1u * 480u),       //
++          src1_major + ((x - x_min_incl) / inv_h1),  //
++          src1_major + ((x - x_min_incl) / inv_h1),  //
++          src_len1,                                  //
++          0u, false, false);
++
++      const uint8_t* up2 = (*upfunc2)(               //
++          scratch_buffer_2k_ptr + (2u * 480u),       //
++          src2_major + ((x - x_min_incl) / inv_h2),  //
++          src2_major + ((x - x_min_incl) / inv_h2),  //
++          src_len2,                                  //
++          0u, false, false);
++
++      const uint8_t* up3 = (*upfunc3)(               //
++          scratch_buffer_2k_ptr + (3u * 480u),       //
++          src3_major + ((x - x_min_incl) / inv_h3),  //
++          src3_major + ((x - x_min_incl) / inv_h3),  //
++          src_len3,                                  //
++          0u, false, false);
++
++      (*conv4func)(dst, x, end, y, up0, up1, up2, up3);
++      x = end;
++    }
++  }
++}
++
++// --------
++
++// wuffs_private_impl__swizzle_flattened_length is like
++// wuffs_base__table__flattened_length but returns uint64_t (not size_t) and
++// also accounts for subsampling.
++static uint64_t  //
++wuffs_private_impl__swizzle_flattened_length(uint32_t width,
++                                             uint32_t height,
++                                             uint32_t stride,
++                                             uint32_t inv_h,
++                                             uint32_t inv_v) {
++  uint64_t scaled_width = (((uint64_t)width) + (inv_h - 1u)) / inv_h;
++  uint64_t scaled_height = (((uint64_t)height) + (inv_v - 1u)) / inv_v;
++  if (scaled_height <= 0u) {
++    return 0u;
++  }
++  return ((scaled_height - 1u) * stride) + scaled_width;
++}
++
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status  //
++wuffs_base__pixel_swizzler__swizzle_ycck(
++    const wuffs_base__pixel_swizzler* p,
++    wuffs_base__pixel_buffer* dst,
++    wuffs_base__slice_u8 dst_palette,
++    uint32_t x_min_incl,
++    uint32_t x_max_excl,
++    uint32_t y_min_incl,
++    uint32_t y_max_excl,
++    wuffs_base__slice_u8 src0,
++    wuffs_base__slice_u8 src1,
++    wuffs_base__slice_u8 src2,
++    wuffs_base__slice_u8 src3,
++    uint32_t width0,
++    uint32_t width1,
++    uint32_t width2,
++    uint32_t width3,
++    uint32_t height0,
++    uint32_t height1,
++    uint32_t height2,
++    uint32_t height3,
++    uint32_t stride0,
++    uint32_t stride1,
++    uint32_t stride2,
++    uint32_t stride3,
++    uint8_t h0,
++    uint8_t h1,
++    uint8_t h2,
++    uint8_t h3,
++    uint8_t v0,
++    uint8_t v1,
++    uint8_t v2,
++    uint8_t v3,
++    bool is_rgb_or_cmyk,
++    bool triangle_filter_for_2to1,
++    wuffs_base__slice_u8 scratch_buffer_2k) {
++  if (!p) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  } else if (!dst ||                             //
++             (x_min_incl > x_max_excl) ||        //
++             (x_max_excl > 0xFFFFu) ||           //
++             (y_min_incl > y_max_excl) ||        //
++             (y_max_excl > 0xFFFFu) ||           //
++             (4u <= ((unsigned int)h0 - 1u)) ||  //
++             (4u <= ((unsigned int)h1 - 1u)) ||  //
++             (4u <= ((unsigned int)h2 - 1u)) ||  //
++             (4u <= ((unsigned int)v0 - 1u)) ||  //
++             (4u <= ((unsigned int)v1 - 1u)) ||  //
++             (4u <= ((unsigned int)v2 - 1u)) ||  //
++             (triangle_filter_for_2to1 && ((x_min_incl | y_min_incl) > 0u)) ||
++             (scratch_buffer_2k.len < 2048u)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((h3 != 0u) || (v3 != 0u)) {
++    if ((4u <= ((unsigned int)h3 - 1u)) ||  //
++        (4u <= ((unsigned int)v3 - 1u))) {
++      return wuffs_base__make_status(wuffs_base__error__bad_argument);
++    }
++  }
++
++  uint32_t max_incl_h = wuffs_private_impl__u32__max_of_4(h0, h1, h2, h3);
++  uint32_t max_incl_v = wuffs_private_impl__u32__max_of_4(v0, v1, v2, v3);
++
++  // Calculate the inverse h and v ratios.
++  //
++  // It also canonicalizes (h=2 and max_incl_h=4) as equivalent to (h=1 and
++  // max_incl_h=2). In both cases, the inv_h value is 2.
++  uint32_t inv_h0 = max_incl_h / h0;
++  uint32_t inv_h1 = max_incl_h / h1;
++  uint32_t inv_h2 = max_incl_h / h2;
++  uint32_t inv_h3 = h3 ? (max_incl_h / h3) : 0u;
++  uint32_t inv_v0 = max_incl_v / v0;
++  uint32_t inv_v1 = max_incl_v / v1;
++  uint32_t inv_v2 = max_incl_v / v2;
++  uint32_t inv_v3 = v3 ? (max_incl_v / v3) : 0u;
++
++  if (x_min_incl != 0) {
++    if ((x_min_incl % inv_h0) || (x_min_incl % inv_h1) ||
++        (x_min_incl % inv_h2) || (inv_h3 && (x_min_incl % inv_h3))) {
++      return wuffs_base__make_status(wuffs_base__error__bad_argument);
++    }
++  }
++  if (y_min_incl != 0) {
++    if ((y_min_incl % inv_v0) || (y_min_incl % inv_v1) ||
++        (y_min_incl % inv_v2) || (inv_v3 && (y_min_incl % inv_v3))) {
++      return wuffs_base__make_status(wuffs_base__error__bad_argument);
++    }
++  }
++
++  uint32_t half_width_for_2to1 = ((x_max_excl - x_min_incl) + 1u) / 2u;
++  if (inv_h0 == 2) {
++    half_width_for_2to1 = wuffs_base__u32__min(half_width_for_2to1, width0);
++  }
++  if (inv_h1 == 2) {
++    half_width_for_2to1 = wuffs_base__u32__min(half_width_for_2to1, width1);
++  }
++  if (inv_h2 == 2) {
++    half_width_for_2to1 = wuffs_base__u32__min(half_width_for_2to1, width2);
++  }
++  if (inv_h3 == 2) {
++    half_width_for_2to1 = wuffs_base__u32__min(half_width_for_2to1, width3);
++  }
++
++  uint32_t half_height_for_2to1 = ((y_max_excl - y_min_incl) + 1u) / 2u;
++  if (inv_v0 == 2) {
++    half_height_for_2to1 = wuffs_base__u32__min(half_height_for_2to1, height0);
++  }
++  if (inv_v1 == 2) {
++    half_height_for_2to1 = wuffs_base__u32__min(half_height_for_2to1, height1);
++  }
++  if (inv_v2 == 2) {
++    half_height_for_2to1 = wuffs_base__u32__min(half_height_for_2to1, height2);
++  }
++  if (inv_v3 == 2) {
++    half_height_for_2to1 = wuffs_base__u32__min(half_height_for_2to1, height3);
++  }
++
++  x_max_excl = wuffs_base__u32__min(                   //
++      wuffs_base__pixel_config__width(&dst->pixcfg),   //
++      x_min_incl + wuffs_private_impl__u32__min_of_5(  //
++                       x_max_excl - x_min_incl,        //
++                       width0 * inv_h0,                //
++                       width1 * inv_h1,                //
++                       width2 * inv_h2,                //
++                       inv_h3 ? (width3 * inv_h3) : 0xFFFFFFFF));
++  y_max_excl = wuffs_base__u32__min(                   //
++      wuffs_base__pixel_config__height(&dst->pixcfg),  //
++      y_min_incl + wuffs_private_impl__u32__min_of_5(  //
++                       y_max_excl - y_min_incl,        //
++                       height0 * inv_v0,               //
++                       height1 * inv_v1,               //
++                       height2 * inv_v2,               //
++                       inv_v3 ? (height3 * inv_v3) : 0xFFFFFFFF));
++
++  if ((x_min_incl >= x_max_excl) || (y_min_incl >= y_max_excl)) {
++    return wuffs_base__make_status(NULL);
++  }
++  uint32_t width = x_max_excl - x_min_incl;
++  uint32_t height = y_max_excl - y_min_incl;
++
++  if (((h0 * inv_h0) != max_incl_h) ||  //
++      ((h1 * inv_h1) != max_incl_h) ||  //
++      ((h2 * inv_h2) != max_incl_h) ||  //
++      ((v0 * inv_v0) != max_incl_v) ||  //
++      ((v1 * inv_v1) != max_incl_v) ||  //
++      ((v2 * inv_v2) != max_incl_v) ||  //
++      (src0.len < wuffs_private_impl__swizzle_flattened_length(
++                      width, height, stride0, inv_h0, inv_v0)) ||
++      (src1.len < wuffs_private_impl__swizzle_flattened_length(
++                      width, height, stride1, inv_h1, inv_v1)) ||
++      (src2.len < wuffs_private_impl__swizzle_flattened_length(
++                      width, height, stride2, inv_h2, inv_v2))) {
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((h3 != 0u) || (v3 != 0u)) {
++    if (((h3 * inv_h3) != max_incl_h) ||  //
++        ((v3 * inv_v3) != max_incl_v) ||  //
++        (src3.len < wuffs_private_impl__swizzle_flattened_length(
++                        width, height, stride3, inv_h3, inv_v3))) {
++      return wuffs_base__make_status(wuffs_base__error__bad_argument);
++    }
++  }
++
++  if (wuffs_base__pixel_format__is_planar(&dst->pixcfg.private_impl.pixfmt)) {
++    // TODO: see wuffs_base__pixel_buffer__set_color_u32_at's TODO.
++    return wuffs_base__make_status(
++        wuffs_base__error__unsupported_pixel_swizzler_option);
++  }
++
++  // ----
++
++#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ENABLE_ALLOWLIST)
++  switch (dst->pixcfg.private_impl.pixfmt.repr) {
++#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_BGR_565)
++    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
++      break;
++#endif
++#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_BGR)
++    case WUFFS_BASE__PIXEL_FORMAT__BGR:
++      break;
++#endif
++#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_BGRA_NONPREMUL)
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
++      break;
++#endif
++#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_BGRA_NONPREMUL_4X16LE)
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
++      break;
++#endif
++#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_BGRA_PREMUL)
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
++      break;
++#endif
++#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_RGB)
++    case WUFFS_BASE__PIXEL_FORMAT__RGB:
++      break;
++#endif
++#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_RGBA_NONPREMUL)
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
++      break;
++#endif
++#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_RGBA_PREMUL)
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
++      break;
++#endif
++    default:
++      return wuffs_base__make_status(
++          wuffs_base__error__disabled_by_wuffs_config_dst_pixel_format_enable_allowlist);
++  }
++#else   // defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ENABLE_ALLOWLIST)
++  switch (dst->pixcfg.private_impl.pixfmt.repr) {
++    case WUFFS_BASE__PIXEL_FORMAT__Y:
++    case WUFFS_BASE__PIXEL_FORMAT__Y_16LE:
++    case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
++    case WUFFS_BASE__PIXEL_FORMAT__YA_NONPREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:
++    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
++    case WUFFS_BASE__PIXEL_FORMAT__BGR:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
++    case WUFFS_BASE__PIXEL_FORMAT__RGB:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
++    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
++      break;
++
++    default:
++      // TODO: see wuffs_base__pixel_buffer__set_color_u32_at's TODO.
++      return wuffs_base__make_status(
++          wuffs_base__error__unsupported_pixel_swizzler_option);
++  }
++#endif  // defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ENABLE_ALLOWLIST)
++
++  // ----
++
++  wuffs_private_impl__swizzle_ycc__convert_3_func conv3func = NULL;
++
++  if (is_rgb_or_cmyk) {
++    conv3func = &wuffs_private_impl__swizzle_rgb__convert_3_general;
++  } else {
++    switch (dst->pixcfg.private_impl.pixfmt.repr) {
++      case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
++      case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
++      case WUFFS_BASE__PIXEL_FORMAT__BGRX:
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
++        if (wuffs_base__cpu_arch__have_x86_avx2()) {
++          conv3func = &wuffs_private_impl__swizzle_ycc__convert_3_bgrx_x86_avx2;
++          break;
+         }
+-        v_planes = t_13;
+-      }
+-      if (v_planes != 1u) {
+-        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
+-        goto exit;
+-      }
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(30);
+-        uint32_t t_14;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-          t_14 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-          iop_a_src += 2;
+-        } else {
+-          self->private_data.s_do_decode_image_config[0].scratch = 0;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(31);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-            uint32_t num_bits_14 = ((uint32_t)(*scratch >> 56));
+-            *scratch <<= 8;
+-            *scratch >>= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_14;
+-            if (num_bits_14 == 8) {
+-              t_14 = ((uint32_t)(*scratch));
+-              break;
+-            }
+-            num_bits_14 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_14)) << 56;
+-          }
++#endif
++        conv3func = &wuffs_private_impl__swizzle_ycc__convert_3_bgrx;
++        break;
++      case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
++      case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
++      case WUFFS_BASE__PIXEL_FORMAT__RGBX:
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
++        if (wuffs_base__cpu_arch__have_x86_avx2()) {
++          conv3func = &wuffs_private_impl__swizzle_ycc__convert_3_rgbx_x86_avx2;
++          break;
+         }
+-        self->private_impl.f_bits_per_pixel = t_14;
+-      }
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(32);
+-        uint32_t t_15;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-          t_15 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-          iop_a_src += 4;
+-        } else {
+-          self->private_data.s_do_decode_image_config[0].scratch = 0;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(33);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-            uint32_t num_bits_15 = ((uint32_t)(*scratch >> 56));
+-            *scratch <<= 8;
+-            *scratch >>= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_15;
+-            if (num_bits_15 == 24) {
+-              t_15 = ((uint32_t)(*scratch));
+-              break;
+-            }
+-            num_bits_15 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_15)) << 56;
+-          }
+-        }
+-        self->private_impl.f_compression = t_15;
+-      }
+-      if (self->private_impl.f_bits_per_pixel == 0u) {
+-        if (self->private_impl.f_compression == 4u) {
+-          self->private_impl.f_io_redirect_fourcc = 1246774599u;
+-          status = wuffs_base__make_status(wuffs_base__note__i_o_redirect);
+-          goto ok;
+-        } else if (self->private_impl.f_compression == 5u) {
+-          self->private_impl.f_io_redirect_fourcc = 1347307296u;
+-          status = wuffs_base__make_status(wuffs_base__note__i_o_redirect);
+-          goto ok;
+-        }
+-        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
+-        goto exit;
+-      }
+-      self->private_data.s_do_decode_image_config[0].scratch = 20u;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(34);
+-      if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-        self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-        iop_a_src = io2_a_src;
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      iop_a_src += self->private_data.s_do_decode_image_config[0].scratch;
+-      if (self->private_impl.f_bitmap_info_len == 40u) {
+-        if (self->private_impl.f_bits_per_pixel >= 16u) {
+-          if (self->private_impl.f_padding >= 16u) {
+-            self->private_impl.f_bitmap_info_len = 56u;
+-            self->private_impl.f_padding -= 16u;
+-          } else if (self->private_impl.f_padding >= 12u) {
+-            self->private_impl.f_bitmap_info_len = 52u;
+-            self->private_impl.f_padding -= 12u;
+-          }
+-        }
+-      } else if ((self->private_impl.f_bitmap_info_len != 52u) &&
+-          (self->private_impl.f_bitmap_info_len != 56u) &&
+-          (self->private_impl.f_bitmap_info_len != 64u) &&
+-          (self->private_impl.f_bitmap_info_len != 108u) &&
+-          (self->private_impl.f_bitmap_info_len != 124u)) {
+-        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
+-        goto exit;
+-      }
+-      if (self->private_impl.f_compression == 6u) {
+-        self->private_impl.f_compression = 3u;
+-      }
+-      if (self->private_impl.f_compression == 3u) {
+-        if (self->private_impl.f_bitmap_info_len >= 52u) {
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(35);
+-            uint32_t t_16;
+-            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-              t_16 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-              iop_a_src += 4;
+-            } else {
+-              self->private_data.s_do_decode_image_config[0].scratch = 0;
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(36);
+-              while (true) {
+-                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                  goto suspend;
+-                }
+-                uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-                uint32_t num_bits_16 = ((uint32_t)(*scratch >> 56));
+-                *scratch <<= 8;
+-                *scratch >>= 8;
+-                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_16;
+-                if (num_bits_16 == 24) {
+-                  t_16 = ((uint32_t)(*scratch));
+-                  break;
+-                }
+-                num_bits_16 += 8u;
+-                *scratch |= ((uint64_t)(num_bits_16)) << 56;
+-              }
+-            }
+-            self->private_impl.f_channel_masks[2u] = t_16;
+-          }
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(37);
+-            uint32_t t_17;
+-            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-              t_17 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-              iop_a_src += 4;
+-            } else {
+-              self->private_data.s_do_decode_image_config[0].scratch = 0;
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(38);
+-              while (true) {
+-                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                  goto suspend;
+-                }
+-                uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-                uint32_t num_bits_17 = ((uint32_t)(*scratch >> 56));
+-                *scratch <<= 8;
+-                *scratch >>= 8;
+-                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_17;
+-                if (num_bits_17 == 24) {
+-                  t_17 = ((uint32_t)(*scratch));
+-                  break;
+-                }
+-                num_bits_17 += 8u;
+-                *scratch |= ((uint64_t)(num_bits_17)) << 56;
+-              }
+-            }
+-            self->private_impl.f_channel_masks[1u] = t_17;
+-          }
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(39);
+-            uint32_t t_18;
+-            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-              t_18 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-              iop_a_src += 4;
+-            } else {
+-              self->private_data.s_do_decode_image_config[0].scratch = 0;
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(40);
+-              while (true) {
+-                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                  goto suspend;
+-                }
+-                uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-                uint32_t num_bits_18 = ((uint32_t)(*scratch >> 56));
+-                *scratch <<= 8;
+-                *scratch >>= 8;
+-                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_18;
+-                if (num_bits_18 == 24) {
+-                  t_18 = ((uint32_t)(*scratch));
+-                  break;
+-                }
+-                num_bits_18 += 8u;
+-                *scratch |= ((uint64_t)(num_bits_18)) << 56;
+-              }
+-            }
+-            self->private_impl.f_channel_masks[0u] = t_18;
+-          }
+-          if (self->private_impl.f_bitmap_info_len >= 56u) {
+-            {
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(41);
+-              uint32_t t_19;
+-              if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-                t_19 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-                iop_a_src += 4;
+-              } else {
+-                self->private_data.s_do_decode_image_config[0].scratch = 0;
+-                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(42);
+-                while (true) {
+-                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                    goto suspend;
+-                  }
+-                  uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-                  uint32_t num_bits_19 = ((uint32_t)(*scratch >> 56));
+-                  *scratch <<= 8;
+-                  *scratch >>= 8;
+-                  *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_19;
+-                  if (num_bits_19 == 24) {
+-                    t_19 = ((uint32_t)(*scratch));
+-                    break;
+-                  }
+-                  num_bits_19 += 8u;
+-                  *scratch |= ((uint64_t)(num_bits_19)) << 56;
+-                }
+-              }
+-              self->private_impl.f_channel_masks[3u] = t_19;
+-            }
+-            self->private_data.s_do_decode_image_config[0].scratch = ((uint32_t)(self->private_impl.f_bitmap_info_len - 56u));
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(43);
+-            if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-              self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-              iop_a_src = io2_a_src;
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            iop_a_src += self->private_data.s_do_decode_image_config[0].scratch;
+-          }
+-          if ((self->private_impl.f_channel_masks[0u] == 255u) && (self->private_impl.f_channel_masks[1u] == 65280u) && (self->private_impl.f_channel_masks[2u] == 16711680u)) {
+-            if (self->private_impl.f_bits_per_pixel == 24u) {
+-              self->private_impl.f_compression = 0u;
+-            } else if (self->private_impl.f_bits_per_pixel == 32u) {
+-              if ((self->private_impl.f_channel_masks[3u] == 0u) || (self->private_impl.f_channel_masks[3u] == 4278190080u)) {
+-                self->private_impl.f_compression = 0u;
+-              }
+-            }
+-          }
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(44);
+-          status = wuffs_bmp__decoder__process_masks(self);
+-          if (status.repr) {
+-            goto suspend;
+-          }
+-        }
+-      } else if (self->private_impl.f_bitmap_info_len >= 40u) {
+-        self->private_data.s_do_decode_image_config[0].scratch = (self->private_impl.f_bitmap_info_len - 40u);
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(45);
+-        if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-          self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-          iop_a_src = io2_a_src;
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
+-        }
+-        iop_a_src += self->private_data.s_do_decode_image_config[0].scratch;
+-      } else {
+-        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
+-        goto exit;
+-      }
+-    }
+-    if (self->private_impl.f_compression != 3u) {
+-      if (self->private_impl.f_bits_per_pixel < 16u) {
+-        if (a_src) {
+-          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-        }
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(46);
+-        status = wuffs_bmp__decoder__read_palette(self, a_src);
+-        if (a_src) {
+-          iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-        }
+-        if (status.repr) {
+-          goto suspend;
+-        }
+-      }
+-    }
+-    if (self->private_impl.f_compression == 0u) {
+-      if ((self->private_impl.f_bits_per_pixel == 1u) || (self->private_impl.f_bits_per_pixel == 2u) || (self->private_impl.f_bits_per_pixel == 4u)) {
+-        self->private_impl.f_src_pixfmt = 2198077448u;
+-        self->private_impl.f_compression = 256u;
+-      } else if (self->private_impl.f_bits_per_pixel == 8u) {
+-        self->private_impl.f_src_pixfmt = 2198077448u;
+-      } else if (self->private_impl.f_bits_per_pixel == 16u) {
+-        self->private_impl.f_compression = 3u;
+-        self->private_impl.f_channel_masks[0u] = 31u;
+-        self->private_impl.f_channel_masks[1u] = 992u;
+-        self->private_impl.f_channel_masks[2u] = 31744u;
+-        self->private_impl.f_channel_masks[3u] = 0u;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(47);
+-        status = wuffs_bmp__decoder__process_masks(self);
+-        if (status.repr) {
+-          goto suspend;
+-        }
+-        self->private_impl.f_src_pixfmt = 2164308923u;
+-      } else if (self->private_impl.f_bits_per_pixel == 24u) {
+-        self->private_impl.f_src_pixfmt = 2147485832u;
+-      } else if (self->private_impl.f_bits_per_pixel == 32u) {
+-        if (self->private_impl.f_channel_masks[3u] == 0u) {
+-          self->private_impl.f_src_pixfmt = 2415954056u;
+-        } else {
+-          self->private_impl.f_src_pixfmt = 2164295816u;
+-        }
+-      } else {
+-        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
+-        goto exit;
+-      }
+-    } else if (self->private_impl.f_compression == 1u) {
+-      if (self->private_impl.f_bits_per_pixel == 8u) {
+-        self->private_impl.f_src_pixfmt = 2198077448u;
+-      } else {
+-        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
+-        goto exit;
+-      }
+-    } else if (self->private_impl.f_compression == 2u) {
+-      if (self->private_impl.f_bits_per_pixel == 4u) {
+-        self->private_impl.f_src_pixfmt = 2198077448u;
+-      } else {
+-        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
+-        goto exit;
+-      }
+-    } else if (self->private_impl.f_compression == 3u) {
+-      if ((self->private_impl.f_bits_per_pixel == 16u) || (self->private_impl.f_bits_per_pixel == 32u)) {
+-        self->private_impl.f_src_pixfmt = 2164308923u;
+-      } else {
+-        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
+-        goto exit;
+-      }
+-    } else {
+-      status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
+-      goto exit;
+-    }
+-    if (((self->private_impl.f_bitmap_info_len < 40u) || (self->private_impl.f_bitmap_info_len == 64u)) &&
+-        (self->private_impl.f_bits_per_pixel != 1u) &&
+-        (self->private_impl.f_bits_per_pixel != 4u) &&
+-        (self->private_impl.f_bits_per_pixel != 8u) &&
+-        (self->private_impl.f_bits_per_pixel != 24u)) {
+-      status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
+-      goto exit;
+-    }
+-    if (self->private_impl.f_bits_per_pixel == 1u) {
+-      v_byte_width = ((self->private_impl.f_width >> 3u) + (((self->private_impl.f_width & 7u) + 7u) >> 3u));
+-      self->private_impl.f_pad_per_row = ((4u - (v_byte_width & 3u)) & 3u);
+-    } else if (self->private_impl.f_bits_per_pixel == 2u) {
+-      v_byte_width = ((self->private_impl.f_width >> 2u) + (((self->private_impl.f_width & 3u) + 3u) >> 2u));
+-      self->private_impl.f_pad_per_row = ((4u - (v_byte_width & 3u)) & 3u);
+-    } else if (self->private_impl.f_bits_per_pixel == 4u) {
+-      v_byte_width = ((self->private_impl.f_width >> 1u) + (self->private_impl.f_width & 1u));
+-      self->private_impl.f_pad_per_row = ((4u - (v_byte_width & 3u)) & 3u);
+-    } else if (self->private_impl.f_bits_per_pixel == 8u) {
+-      self->private_impl.f_pad_per_row = ((4u - (self->private_impl.f_width & 3u)) & 3u);
+-    } else if (self->private_impl.f_bits_per_pixel == 16u) {
+-      self->private_impl.f_pad_per_row = ((self->private_impl.f_width & 1u) * 2u);
+-    } else if (self->private_impl.f_bits_per_pixel == 24u) {
+-      self->private_impl.f_pad_per_row = (self->private_impl.f_width & 3u);
+-    } else if (self->private_impl.f_bits_per_pixel == 32u) {
+-      self->private_impl.f_pad_per_row = 0u;
+-    }
+-    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
+-    if (a_dst != NULL) {
+-      v_dst_pixfmt = 2164295816u;
+-      if ((self->private_impl.f_channel_num_bits[0u] > 8u) ||
+-          (self->private_impl.f_channel_num_bits[1u] > 8u) ||
+-          (self->private_impl.f_channel_num_bits[2u] > 8u) ||
+-          (self->private_impl.f_channel_num_bits[3u] > 8u)) {
+-        v_dst_pixfmt = 2164308923u;
+-      }
+-      wuffs_base__image_config__set(
+-          a_dst,
+-          v_dst_pixfmt,
+-          0u,
+-          self->private_impl.f_width,
+-          self->private_impl.f_height,
+-          self->private_impl.f_frame_config_io_position,
+-          (self->private_impl.f_channel_masks[3u] == 0u));
++#endif
++        conv3func = &wuffs_private_impl__swizzle_ycc__convert_3_rgbx;
++        break;
++      default:
++        conv3func = &wuffs_private_impl__swizzle_ycc__convert_3_general;
++        break;
+     }
+-    self->private_impl.f_call_sequence = 32u;
+-
+-    ok:
+-    self->private_impl.p_do_decode_image_config[0] = 0;
+-    goto exit;
+   }
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  void (*func3)(wuffs_base__pixel_buffer * dst,  //
++                uint32_t x_min_incl,             //
++                uint32_t x_max_excl,             //
++                uint32_t y_min_incl,             //
++                uint32_t y_max_excl,             //
++                const uint8_t* src_ptr0,         //
++                const uint8_t* src_ptr1,         //
++                const uint8_t* src_ptr2,         //
++                uint32_t stride0,                //
++                uint32_t stride1,                //
++                uint32_t stride2,                //
++                uint32_t inv_h0,                 //
++                uint32_t inv_h1,                 //
++                uint32_t inv_h2,                 //
++                uint32_t inv_v0,                 //
++                uint32_t inv_v1,                 //
++                uint32_t inv_v2,                 //
++                uint32_t half_width_for_2to1,    //
++                uint32_t half_height_for_2to1,   //
++                uint8_t* scratch_buffer_2k_ptr,  //
++                wuffs_private_impl__swizzle_ycc__upsample_func(*upfuncs)[4][4],
++                wuffs_private_impl__swizzle_ycc__convert_3_func conv3func) =
++      &wuffs_private_impl__swizzle_ycc__general__box_filter;
++
++  void (*func4)(wuffs_base__pixel_buffer * dst,  //
++                uint32_t x_min_incl,             //
++                uint32_t x_max_excl,             //
++                uint32_t y_min_incl,             //
++                uint32_t y_max_excl,             //
++                const uint8_t* src_ptr0,         //
++                const uint8_t* src_ptr1,         //
++                const uint8_t* src_ptr2,         //
++                const uint8_t* src_ptr3,         //
++                uint32_t stride0,                //
++                uint32_t stride1,                //
++                uint32_t stride2,                //
++                uint32_t stride3,                //
++                uint32_t inv_h0,                 //
++                uint32_t inv_h1,                 //
++                uint32_t inv_h2,                 //
++                uint32_t inv_h3,                 //
++                uint32_t inv_v0,                 //
++                uint32_t inv_v1,                 //
++                uint32_t inv_v2,                 //
++                uint32_t inv_v3,                 //
++                uint32_t half_width_for_2to1,    //
++                uint32_t half_height_for_2to1,   //
++                uint8_t* scratch_buffer_2k_ptr,  //
++                wuffs_private_impl__swizzle_ycc__upsample_func(*upfuncs)[4][4],
++                wuffs_private_impl__swizzle_ycc__convert_4_func conv4func) =
++      &wuffs_private_impl__swizzle_ycck__general__box_filter;
++
++  wuffs_private_impl__swizzle_ycc__upsample_func upfuncs[4][4];
++  memcpy(&upfuncs, &wuffs_private_impl__swizzle_ycc__upsample_funcs,
++         sizeof upfuncs);
+ 
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  if (triangle_filter_for_2to1 &&
++      (wuffs_private_impl__swizzle_has_triangle_upsampler(inv_h0, inv_v0) ||
++       wuffs_private_impl__swizzle_has_triangle_upsampler(inv_h1, inv_v1) ||
++       wuffs_private_impl__swizzle_has_triangle_upsampler(inv_h2, inv_v2) ||
++       wuffs_private_impl__swizzle_has_triangle_upsampler(inv_h3, inv_v3))) {
++    func3 = &wuffs_private_impl__swizzle_ycc__general__triangle_filter;
++    func4 = &wuffs_private_impl__swizzle_ycck__general__triangle_filter;
++
++    upfuncs[0][1] = wuffs_private_impl__swizzle_ycc__upsample_inv_h1v2_triangle;
++    upfuncs[1][0] = wuffs_private_impl__swizzle_ycc__upsample_inv_h2v1_triangle;
++    upfuncs[1][1] = wuffs_private_impl__swizzle_ycc__upsample_inv_h2v2_triangle;
++
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
++#if defined(__GNUC__) && !defined(__clang__)
++    // Don't use our AVX2 implementation for GCC (but do use it for clang). For
++    // some unknown reason, GCC performs noticably better on the non-SIMD
++    // version. Possibly because GCC's auto-vectorizer is smarter (just with
++    // SSE2, not AVX2) than our hand-written code, but that's just a guess.
++    //
++    // See commits 51bc60ef9298cb2efc1b29a9681191f66d49820d and
++    // cd769a0cdf1b5affee13f6089b995f3d39569cb4 for benchmark numbers.
++    //
++    // See also https://godbolt.org/z/MbhbPGEz4 for Debian Bullseye's clang 11
++    // versus gcc 10, where only gcc auto-vectorizes, although later clang
++    // versions will also auto-vectorize.
++#else
++    if (wuffs_base__cpu_arch__have_x86_avx2()) {
++      upfuncs[1][1] =
++          wuffs_private_impl__swizzle_ycc__upsample_inv_h2v2_triangle_x86_avx2;
++    }
++#endif
++#endif
+   }
+ 
+-  return status;
+-}
+-
+-// -------- func bmp.decoder.decode_frame_config
++  if ((h3 != 0u) || (v3 != 0u)) {
++    wuffs_private_impl__swizzle_ycc__convert_4_func conv4func =
++        is_rgb_or_cmyk ? &wuffs_private_impl__swizzle_cmyk__convert_4_general
++                       : &wuffs_private_impl__swizzle_ycck__convert_4_general;
++    (*func4)(                                                 //
++        dst, x_min_incl, x_max_excl, y_min_incl, y_max_excl,  //
++        src0.ptr, src1.ptr, src2.ptr, src3.ptr,               //
++        stride0, stride1, stride2, stride3,                   //
++        inv_h0, inv_h1, inv_h2, inv_h3,                       //
++        inv_v0, inv_v1, inv_v2, inv_v3,                       //
++        half_width_for_2to1, half_height_for_2to1,            //
++        scratch_buffer_2k.ptr, &upfuncs, conv4func);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_bmp__decoder__decode_frame_config(
+-    wuffs_bmp__decoder* self,
+-    wuffs_base__frame_config* a_dst,
+-    wuffs_base__io_buffer* a_src) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-  if (!a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 2)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  } else {
++    (*func3)(                                                 //
++        dst, x_min_incl, x_max_excl, y_min_incl, y_max_excl,  //
++        src0.ptr, src1.ptr, src2.ptr,                         //
++        stride0, stride1, stride2,                            //
++        inv_h0, inv_h1, inv_h2,                               //
++        inv_v0, inv_v1, inv_v2,                               //
++        half_width_for_2to1, half_height_for_2to1,            //
++        scratch_buffer_2k.ptr, &upfuncs, conv3func);
+   }
+-  self->private_impl.active_coroutine = 0;
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-
+-  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++  return wuffs_base__make_status(NULL);
++}
+ 
+-    while (true) {
+-      {
+-        wuffs_base__status t_0 = wuffs_bmp__decoder__do_decode_frame_config(self, a_dst, a_src);
+-        v_status = t_0;
+-      }
+-      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_bmp__error__truncated_input);
+-        goto exit;
+-      }
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+-    }
++// --------
+ 
+-    ok:
+-    self->private_impl.p_decode_frame_config[0] = 0;
+-    goto exit;
++// ‼ WUFFS MULTI-FILE SECTION +x86_avx2
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
++WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
++static void  //
++wuffs_private_impl__swizzle_ycc__convert_3_bgrx_x86_avx2(
++    wuffs_base__pixel_buffer* dst,
++    uint32_t x,
++    uint32_t x_end,
++    uint32_t y,
++    const uint8_t* up0,
++    const uint8_t* up1,
++    const uint8_t* up2) {
++  if ((x + 32u) > x_end) {
++    wuffs_private_impl__swizzle_ycc__convert_3_bgrx(  //
++        dst, x, x_end, y, up0, up1, up2);
++    return;
+   }
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
++  size_t dst_stride = dst->private_impl.planes[0].stride;
++  uint8_t* dst_iter = dst->private_impl.planes[0].ptr +
++                      (dst_stride * ((size_t)y)) + (4u * ((size_t)x));
+ 
+-  goto exit;
+-  exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-  }
+-  return status;
+-}
++  // u0001 = u16x16 [0x0001 .. 0x0001]
++  // u00FF = u16x16 [0x00FF .. 0x00FF]
++  // uFF80 = u16x16 [0xFF80 .. 0xFF80]
++  // uFFFF = u16x16 [0xFFFF .. 0xFFFF]
++  const __m256i u0001 = _mm256_set1_epi16(+0x0001);
++  const __m256i u00FF = _mm256_set1_epi16(+0x00FF);
++  const __m256i uFF80 = _mm256_set1_epi16(-0x0080);
++  const __m256i uFFFF = _mm256_set1_epi16(-0x0001);
+ 
+-// -------- func bmp.decoder.do_decode_frame_config
++  // p8000_p0000 = u16x16 [0x8000 0x0000 .. 0x8000 0x0000]
++  const __m256i p8000_p0000 = _mm256_set_epi16(  //
++      +0x0000, -0x8000, +0x0000, -0x8000,        //
++      +0x0000, -0x8000, +0x0000, -0x8000,        //
++      +0x0000, -0x8000, +0x0000, -0x8000,        //
++      +0x0000, -0x8000, +0x0000, -0x8000);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bmp__decoder__do_decode_frame_config(
+-    wuffs_bmp__decoder* self,
+-    wuffs_base__frame_config* a_dst,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++  // Per wuffs_base__color_ycc__as__color_u32, the formulae:
++  //
++  //  R = Y                + 1.40200 * Cr
++  //  G = Y - 0.34414 * Cb - 0.71414 * Cr
++  //  B = Y + 1.77200 * Cb
++  //
++  // When scaled by 1<<16:
++  //
++  //  0.34414 becomes 0x0581A =  22554.
++  //  0.71414 becomes 0x0B6D2 =  46802.
++  //  1.40200 becomes 0x166E9 =  91881.
++  //  1.77200 becomes 0x1C5A2 = 116130.
++  //
++  // Separate the integer and fractional parts, since we work with signed
++  // 16-bit SIMD lanes. The fractional parts range from -0.5 .. +0.5 (as
++  // floating-point) which is from -0x8000 .. +0x8000 (as fixed-point).
++  //
++  //  -0x3A5E = -0x20000 + 0x1C5A2     The B:Cb factor.
++  //  +0x66E9 = -0x10000 + 0x166E9     The R:Cr factor.
++  //  -0x581A = +0x00000 - 0x0581A     The G:Cb factor.
++  //  +0x492E = +0x10000 - 0x0B6D2     The G:Cr factor.
++  const __m256i m3A5E = _mm256_set1_epi16(-0x3A5E);
++  const __m256i p66E9 = _mm256_set1_epi16(+0x66E9);
++  const __m256i m581A_p492E = _mm256_set_epi16(  //
++      +0x492E, -0x581A, +0x492E, -0x581A,        //
++      +0x492E, -0x581A, +0x492E, -0x581A,        //
++      +0x492E, -0x581A, +0x492E, -0x581A,        //
++      +0x492E, -0x581A, +0x492E, -0x581A);
+ 
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
++  while (x < x_end) {
++    // Load chroma values in even and odd columns (the high 8 bits of each
++    // u16x16 element are zero) and then subtract 0x0080.
++    //
++    // cb_all = u8x32  [cb.00 cb.01 cb.02 cb.03 .. cb.1C cb.1D cb.1E cb.1F]
++    // cb_eve = i16x16 [cb.00-0x80  cb.02-0x80  .. cb.1C-0x80  cb.1E-0x80 ]
++    // cb_odd = i16x16 [cb.01-0x80  cb.03-0x80  .. cb.1D-0x80  cb.1F-0x80 ]
++    //
++    // Ditto for the cr_xxx Chroma-Red values.
++    __m256i cb_all = _mm256_lddqu_si256((const __m256i*)(const void*)up1);
++    __m256i cr_all = _mm256_lddqu_si256((const __m256i*)(const void*)up2);
++    __m256i cb_eve = _mm256_add_epi16(uFF80, _mm256_and_si256(cb_all, u00FF));
++    __m256i cr_eve = _mm256_add_epi16(uFF80, _mm256_and_si256(cr_all, u00FF));
++    __m256i cb_odd = _mm256_add_epi16(uFF80, _mm256_srli_epi16(cb_all, 8));
++    __m256i cr_odd = _mm256_add_epi16(uFF80, _mm256_srli_epi16(cr_all, 8));
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++    // ----
+ 
+-    if (self->private_impl.f_call_sequence == 32u) {
+-    } else if (self->private_impl.f_call_sequence < 32u) {
+-      if (a_src) {
+-        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-      }
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      status = wuffs_bmp__decoder__do_decode_image_config(self, NULL, a_src);
+-      if (a_src) {
+-        iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-      }
+-      if (status.repr) {
+-        goto suspend;
+-      }
+-    } else if (self->private_impl.f_call_sequence == 40u) {
+-      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
+-        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
+-        goto exit;
+-      }
+-    } else if (self->private_impl.f_call_sequence == 64u) {
+-      self->private_impl.f_call_sequence = 96u;
+-      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-      goto ok;
+-    } else {
+-      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-      goto ok;
+-    }
+-    if (a_dst != NULL) {
+-      wuffs_base__frame_config__set(
+-          a_dst,
+-          wuffs_base__utility__make_rect_ie_u32(
+-          0u,
+-          0u,
+-          self->private_impl.f_width,
+-          self->private_impl.f_height),
+-          ((wuffs_base__flicks)(0u)),
+-          0u,
+-          self->private_impl.f_frame_config_io_position,
+-          0u,
+-          true,
+-          false,
+-          4278190080u);
+-    }
+-    self->private_impl.f_call_sequence = 64u;
++    // Calculate:
++    //
++    //  B-Y = (+1.77200 * Cb)                 as floating-point
++    //  R-Y = (+1.40200 * Cr)                 as floating-point
++    //
++    //  B-Y = ((0x2_0000 - 0x3A5E) * Cb)      as fixed-point
++    //  R-Y = ((0x1_0000 + 0x66E9) * Cr)      as fixed-point
++    //
++    //  B-Y = ((-0x3A5E * Cb) + ("2.0" * Cb))
++    //  R-Y = ((+0x66E9 * Cr) + ("1.0" * Cr))
+ 
+-    ok:
+-    self->private_impl.p_do_decode_frame_config[0] = 0;
+-    goto exit;
+-  }
++    // Multiply by m3A5E or p66E9, taking the high 16 bits. There's also a
++    // doubling (add x to itself), adding-of-1 and halving (shift right by 1).
++    // That makes multiply-and-take-high round to nearest (instead of down).
++    __m256i tmp_by_eve = _mm256_srai_epi16(
++        _mm256_add_epi16(
++            _mm256_mulhi_epi16(_mm256_add_epi16(cb_eve, cb_eve), m3A5E), u0001),
++        1);
++    __m256i tmp_by_odd = _mm256_srai_epi16(
++        _mm256_add_epi16(
++            _mm256_mulhi_epi16(_mm256_add_epi16(cb_odd, cb_odd), m3A5E), u0001),
++        1);
++    __m256i tmp_ry_eve = _mm256_srai_epi16(
++        _mm256_add_epi16(
++            _mm256_mulhi_epi16(_mm256_add_epi16(cr_eve, cr_eve), p66E9), u0001),
++        1);
++    __m256i tmp_ry_odd = _mm256_srai_epi16(
++        _mm256_add_epi16(
++            _mm256_mulhi_epi16(_mm256_add_epi16(cr_odd, cr_odd), p66E9), u0001),
++        1);
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++    // Add (2 * Cb) and (1 * Cr).
++    __m256i by_eve =
++        _mm256_add_epi16(tmp_by_eve, _mm256_add_epi16(cb_eve, cb_eve));
++    __m256i by_odd =
++        _mm256_add_epi16(tmp_by_odd, _mm256_add_epi16(cb_odd, cb_odd));
++    __m256i ry_eve = _mm256_add_epi16(tmp_ry_eve, cr_eve);
++    __m256i ry_odd = _mm256_add_epi16(tmp_ry_odd, cr_odd);
+ 
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
++    // ----
+ 
+-  return status;
+-}
++    // Calculate:
++    //
++    //  G-Y = (-0.34414 * Cb) +
++    //        (-0.71414 * Cr)                 as floating-point
++    //
++    //  G-Y = ((+0x0_0000 - 0x581A) * Cb) +
++    //        ((-0x1_0000 + 0x492E) * Cr)     as fixed-point
++    //
++    //  G-Y =  (-0x581A * Cb) +
++    //         (+0x492E * Cr) - ("1.0" * Cr)
+ 
+-// -------- func bmp.decoder.decode_frame
++    // Multiply-add to get ((-0x581A * Cb) + (+0x492E * Cr)).
++    __m256i tmp0_gy_eve_lo = _mm256_madd_epi16(  //
++        _mm256_unpacklo_epi16(cb_eve, cr_eve), m581A_p492E);
++    __m256i tmp0_gy_eve_hi = _mm256_madd_epi16(  //
++        _mm256_unpackhi_epi16(cb_eve, cr_eve), m581A_p492E);
++    __m256i tmp0_gy_odd_lo = _mm256_madd_epi16(  //
++        _mm256_unpacklo_epi16(cb_odd, cr_odd), m581A_p492E);
++    __m256i tmp0_gy_odd_hi = _mm256_madd_epi16(  //
++        _mm256_unpackhi_epi16(cb_odd, cr_odd), m581A_p492E);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_bmp__decoder__decode_frame(
+-    wuffs_bmp__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-  if (!a_dst || !a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 3)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+-  }
+-  self->private_impl.active_coroutine = 0;
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++    // Divide the i32x8 vectors by (1 << 16), rounding to nearest.
++    __m256i tmp1_gy_eve_lo =
++        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_eve_lo, p8000_p0000), 16);
++    __m256i tmp1_gy_eve_hi =
++        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_eve_hi, p8000_p0000), 16);
++    __m256i tmp1_gy_odd_lo =
++        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_odd_lo, p8000_p0000), 16);
++    __m256i tmp1_gy_odd_hi =
++        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_odd_hi, p8000_p0000), 16);
+ 
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++    // Pack the ((-0x581A * Cb) + (+0x492E * Cr)) as i16x16 and subtract Cr.
++    __m256i gy_eve = _mm256_sub_epi16(
++        _mm256_packs_epi32(tmp1_gy_eve_lo, tmp1_gy_eve_hi), cr_eve);
++    __m256i gy_odd = _mm256_sub_epi16(
++        _mm256_packs_epi32(tmp1_gy_odd_lo, tmp1_gy_odd_hi), cr_odd);
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_frame[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++    // ----
+ 
+-    while (true) {
+-      {
+-        wuffs_base__status t_0 = wuffs_bmp__decoder__do_decode_frame(self,
+-            a_dst,
+-            a_src,
+-            a_blend,
+-            a_workbuf,
+-            a_opts);
+-        v_status = t_0;
+-      }
+-      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_bmp__error__truncated_input);
+-        goto exit;
+-      }
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+-    }
++    // Add Y to (B-Y), (G-Y) and (R-Y) to produce B, G and R.
++    //
++    // For the resultant packed_x_xxx vectors, only elements 0 ..= 7 and 16 ..=
++    // 23 of the 32-element vectors matter (since we'll unpacklo but not
++    // unpackhi them). Let … denote 8 ignored consecutive u8 values and let %
++    // denote 0xFF. We'll end this section with:
++    //
++    // packed_b_eve = u8x32 [b00 b02 .. b0C b0E  …  b10 b12 .. b1C b1E  …]
++    // packed_b_odd = u8x32 [b01 b03 .. b0D b0F  …  b11 b13 .. b1D b1F  …]
++    // packed_g_eve = u8x32 [g00 g02 .. g0C g0E  …  g10 g12 .. g1C g1E  …]
++    // packed_g_odd = u8x32 [g01 g03 .. g0D g0F  …  g11 g13 .. g1D g1F  …]
++    // packed_r_eve = u8x32 [r00 r02 .. r0C r0E  …  r10 r12 .. r1C r1E  …]
++    // packed_r_odd = u8x32 [r01 r03 .. r0D r0F  …  r11 r13 .. r1D r1F  …]
++    // uFFFF        = u8x32 [  %   % ..   %   %  …    %   % ..   %   %  …]
+ 
+-    ok:
+-    self->private_impl.p_decode_frame[0] = 0;
+-    goto exit;
+-  }
++    __m256i yy_all = _mm256_lddqu_si256((const __m256i*)(const void*)up0);
++    __m256i yy_eve = _mm256_and_si256(yy_all, u00FF);
++    __m256i yy_odd = _mm256_srli_epi16(yy_all, 8);
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
++    __m256i loose_b_eve = _mm256_add_epi16(by_eve, yy_eve);
++    __m256i loose_b_odd = _mm256_add_epi16(by_odd, yy_odd);
++    __m256i packed_b_eve = _mm256_packus_epi16(loose_b_eve, loose_b_eve);
++    __m256i packed_b_odd = _mm256_packus_epi16(loose_b_odd, loose_b_odd);
+ 
+-  goto exit;
+-  exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-  }
+-  return status;
+-}
++    __m256i loose_g_eve = _mm256_add_epi16(gy_eve, yy_eve);
++    __m256i loose_g_odd = _mm256_add_epi16(gy_odd, yy_odd);
++    __m256i packed_g_eve = _mm256_packus_epi16(loose_g_eve, loose_g_eve);
++    __m256i packed_g_odd = _mm256_packus_epi16(loose_g_odd, loose_g_odd);
+ 
+-// -------- func bmp.decoder.do_decode_frame
++    __m256i loose_r_eve = _mm256_add_epi16(ry_eve, yy_eve);
++    __m256i loose_r_odd = _mm256_add_epi16(ry_odd, yy_odd);
++    __m256i packed_r_eve = _mm256_packus_epi16(loose_r_eve, loose_r_eve);
++    __m256i packed_r_odd = _mm256_packus_epi16(loose_r_odd, loose_r_odd);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bmp__decoder__do_decode_frame(
+-    wuffs_bmp__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++    // ----
+ 
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++    // Mix those values (unpacking in 8, 16 and then 32 bit units) to get the
++    // desired BGRX/RGBX order.
++    //
++    // From here onwards, all of our __m256i registers are u8x32.
+ 
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
++    // mix00 = [b00 g00 b02 g02 .. b0E g0E b10 g10 .. b1C g1C b1E g1E]
++    // mix01 = [b01 g01 b03 g03 .. b0F g0F b11 g11 .. b1D g1D b1F g1F]
++    // mix02 = [r00   % r02   % .. r0E   % r10   % .. r1C   % r1E   %]
++    // mix03 = [r01   % r03   % .. r0F   % r11   % .. r1D   % r1F   %]
++    //
++    // See also § below.
++    __m256i mix00 = _mm256_unpacklo_epi8(packed_b_eve, packed_g_eve);
++    __m256i mix01 = _mm256_unpacklo_epi8(packed_b_odd, packed_g_odd);
++    __m256i mix02 = _mm256_unpacklo_epi8(packed_r_eve, uFFFF);
++    __m256i mix03 = _mm256_unpacklo_epi8(packed_r_odd, uFFFF);
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++    // mix10 = [b00 g00 r00 %  b02 g02 r02 %  b04 g04 r04 %  b06 g06 r06 %
++    //          b10 g10 r10 %  b12 g12 r12 %  b14 g14 r14 %  b16 g16 r16 %]
++    // mix11 = [b01 g01 r01 %  b03 g03 r03 %  b05 g05 r05 %  b07 g07 r07 %
++    //          b11 g11 r11 %  b13 g13 r13 %  b15 g15 r15 %  b17 g17 r17 %]
++    // mix12 = [b08 g08 r08 %  b0A g0A r0A %  b0C g0C r0C %  b0E g0E r0E %
++    //          b18 g18 r18 %  b1A g1A r1A %  b1C g1C r1C %  b1E g1E r1E %]
++    // mix13 = [b09 g09 r09 %  b0B g0B r0B %  b0D g0D r0D %  b0F g0F r0F %
++    //          b19 g19 r19 %  b1B g1B r1B %  b1D g1D r1D %  b1F g1F r1F %]
++    __m256i mix10 = _mm256_unpacklo_epi16(mix00, mix02);
++    __m256i mix11 = _mm256_unpacklo_epi16(mix01, mix03);
++    __m256i mix12 = _mm256_unpackhi_epi16(mix00, mix02);
++    __m256i mix13 = _mm256_unpackhi_epi16(mix01, mix03);
+ 
+-    if (self->private_impl.f_call_sequence == 64u) {
+-    } else if (self->private_impl.f_call_sequence < 64u) {
+-      if (a_src) {
+-        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-      }
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      status = wuffs_bmp__decoder__do_decode_frame_config(self, NULL, a_src);
+-      if (a_src) {
+-        iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-      }
+-      if (status.repr) {
+-        goto suspend;
+-      }
+-    } else {
+-      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-      goto ok;
+-    }
+-    self->private_data.s_do_decode_frame[0].scratch = self->private_impl.f_padding;
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-    if (self->private_data.s_do_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-      self->private_data.s_do_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-      iop_a_src = io2_a_src;
+-      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-      goto suspend;
+-    }
+-    iop_a_src += self->private_data.s_do_decode_frame[0].scratch;
+-    if ((self->private_impl.f_width > 0u) && (self->private_impl.f_height > 0u)) {
+-      self->private_impl.f_dst_x = 0u;
+-      if (self->private_impl.f_top_down) {
+-        self->private_impl.f_dst_y = 0u;
+-        self->private_impl.f_dst_y_inc = 1u;
+-      } else {
+-        self->private_impl.f_dst_y = ((uint32_t)(self->private_impl.f_height - 1u));
+-        self->private_impl.f_dst_y_inc = 4294967295u;
+-      }
+-      v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
+-          wuffs_base__pixel_buffer__pixel_format(a_dst),
+-          wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048)),
+-          wuffs_base__utility__make_pixel_format(self->private_impl.f_src_pixfmt),
+-          wuffs_base__make_slice_u8(self->private_data.f_src_palette, 1024),
+-          a_blend);
+-      if ( ! wuffs_base__status__is_ok(&v_status)) {
+-        status = v_status;
+-        if (wuffs_base__status__is_error(&status)) {
+-          goto exit;
+-        } else if (wuffs_base__status__is_suspension(&status)) {
+-          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
+-          goto exit;
+-        }
+-        goto ok;
+-      }
+-      while (true) {
+-        if (self->private_impl.f_compression == 0u) {
+-          if (a_src) {
+-            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-          }
+-          v_status = wuffs_bmp__decoder__swizzle_none(self, a_dst, a_src);
+-          if (a_src) {
+-            iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-          }
+-        } else if (self->private_impl.f_compression < 3u) {
+-          if (a_src) {
+-            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-          }
+-          v_status = wuffs_bmp__decoder__swizzle_rle(self, a_dst, a_src);
+-          if (a_src) {
+-            iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-          }
+-        } else if (self->private_impl.f_compression == 3u) {
+-          if (a_src) {
+-            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-          }
+-          v_status = wuffs_bmp__decoder__swizzle_bitfields(self, a_dst, a_src);
+-          if (a_src) {
+-            iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-          }
+-        } else {
+-          if (a_src) {
+-            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-          }
+-          v_status = wuffs_bmp__decoder__swizzle_low_bit_depth(self, a_dst, a_src);
+-          if (a_src) {
+-            iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-          }
+-        }
+-        if (wuffs_base__status__is_ok(&v_status)) {
+-          break;
+-        } else if (v_status.repr != wuffs_bmp__note__internal_note_short_read) {
+-          status = v_status;
+-          if (wuffs_base__status__is_error(&status)) {
+-            goto exit;
+-          } else if (wuffs_base__status__is_suspension(&status)) {
+-            status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
+-            goto exit;
+-          }
+-          goto ok;
+-        }
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
+-      }
+-      self->private_data.s_do_decode_frame[0].scratch = self->private_impl.f_pending_pad;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-      if (self->private_data.s_do_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-        self->private_data.s_do_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-        iop_a_src = io2_a_src;
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      iop_a_src += self->private_data.s_do_decode_frame[0].scratch;
+-      self->private_impl.f_pending_pad = 0u;
+-    }
+-    self->private_impl.f_call_sequence = 96u;
++    // mix20 = [b00 g00 r00 %  b01 g01 r01 %  b02 g02 r02 %  b03 g03 r03 %
++    //          b10 g10 r10 %  b11 g11 r11 %  b12 g12 r12 %  b13 g13 r13 %]
++    // mix21 = [b04 g04 r04 %  b05 g05 r05 %  b06 g06 r06 %  b07 g07 r07 %
++    //          b14 g14 r14 %  b15 g15 r15 %  b16 g16 r16 %  b17 g17 r17 %]
++    // mix22 = [b08 g08 r08 %  b09 g09 r09 %  b0A g0A r0A %  b0B g0B r0B %
++    //          b18 g18 r18 %  b19 g19 r19 %  b1A g1A r1A %  b1B g1B r1B %]
++    // mix23 = [b0C g0C r0C %  b0D g0D r0D %  b0E g0E r0E %  b0F g0F r0F %
++    //          b1C g1C r1C %  b1D g1D r1D %  b1E g1E r1E %  b1F g1F r1F %]
++    __m256i mix20 = _mm256_unpacklo_epi32(mix10, mix11);
++    __m256i mix21 = _mm256_unpackhi_epi32(mix10, mix11);
++    __m256i mix22 = _mm256_unpacklo_epi32(mix12, mix13);
++    __m256i mix23 = _mm256_unpackhi_epi32(mix12, mix13);
+ 
+-    ok:
+-    self->private_impl.p_do_decode_frame[0] = 0;
+-    goto exit;
+-  }
++    // mix30 = [b00 g00 r00 %  b01 g01 r01 %  b02 g02 r02 %  b03 g03 r03 %
++    //          b04 g04 r04 %  b05 g05 r05 %  b06 g06 r06 %  b07 g07 r07 %]
++    // mix31 = [b08 g08 r08 %  b09 g09 r09 %  b0A g0A r0A %  b0B g0B r0B %
++    //          b0C g0C r0C %  b0D g0D r0D %  b0E g0E r0E %  b0F g0F r0F %]
++    // mix32 = [b10 g10 r10 %  b11 g11 r11 %  b12 g12 r12 %  b13 g13 r13 %
++    //          b14 g14 r14 %  b15 g15 r15 %  b16 g16 r16 %  b17 g17 r17 %]
++    // mix33 = [b18 g18 r18 %  b19 g19 r19 %  b1A g1A r1A %  b1B g1B r1B %
++    //          b1C g1C r1C %  b1D g1D r1D %  b1E g1E r1E %  b1F g1F r1F %]
++    __m256i mix30 = _mm256_permute2x128_si256(mix20, mix21, 0x20);
++    __m256i mix31 = _mm256_permute2x128_si256(mix22, mix23, 0x20);
++    __m256i mix32 = _mm256_permute2x128_si256(mix20, mix21, 0x31);
++    __m256i mix33 = _mm256_permute2x128_si256(mix22, mix23, 0x31);
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++    // Write out four u8x32 SIMD registers (128 bytes, 32 BGRX/RGBX pixels).
++    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x00), mix30);
++    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x20), mix31);
++    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x40), mix32);
++    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x60), mix33);
+ 
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++    // Advance by up to 32 pixels. The first iteration might be smaller than 32
++    // so that all of the remaining steps are exactly 32.
++    uint32_t n = 32u - (31u & (x - x_end));
++    dst_iter += 4u * n;
++    up0 += n;
++    up1 += n;
++    up2 += n;
++    x += n;
+   }
+-
+-  return status;
+ }
+ 
+-// -------- func bmp.decoder.swizzle_none
++// The rgbx flavor (below) is exactly the same as the bgrx flavor (above)
++// except for the lines marked with a § and that comments were stripped.
++WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
++static void  //
++wuffs_private_impl__swizzle_ycc__convert_3_rgbx_x86_avx2(
++    wuffs_base__pixel_buffer* dst,
++    uint32_t x,
++    uint32_t x_end,
++    uint32_t y,
++    const uint8_t* up0,
++    const uint8_t* up1,
++    const uint8_t* up2) {
++  if ((x + 32u) > x_end) {
++    wuffs_private_impl__swizzle_ycc__convert_3_bgrx(  //
++        dst, x, x_end, y, up0, up1, up2);
++    return;
++  }
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bmp__decoder__swizzle_none(
+-    wuffs_bmp__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++  size_t dst_stride = dst->private_impl.planes[0].stride;
++  uint8_t* dst_iter = dst->private_impl.planes[0].ptr +
++                      (dst_stride * ((size_t)y)) + (4u * ((size_t)x));
+ 
+-  wuffs_base__pixel_format v_dst_pixfmt = {0};
+-  uint32_t v_dst_bits_per_pixel = 0;
+-  uint32_t v_dst_bytes_per_pixel = 0;
+-  uint64_t v_dst_bytes_per_row = 0;
+-  uint32_t v_src_bytes_per_pixel = 0;
+-  wuffs_base__slice_u8 v_dst_palette = {0};
+-  wuffs_base__table_u8 v_tab = {0};
+-  wuffs_base__slice_u8 v_dst = {0};
+-  uint64_t v_i = 0;
+-  uint64_t v_j = 0;
+-  uint64_t v_n = 0;
++  const __m256i u0001 = _mm256_set1_epi16(+0x0001);
++  const __m256i u00FF = _mm256_set1_epi16(+0x00FF);
++  const __m256i uFF80 = _mm256_set1_epi16(-0x0080);
++  const __m256i uFFFF = _mm256_set1_epi16(-0x0001);
+ 
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
++  const __m256i p8000_p0000 = _mm256_set_epi16(  //
++      +0x0000, -0x8000, +0x0000, -0x8000,        //
++      +0x0000, -0x8000, +0x0000, -0x8000,        //
++      +0x0000, -0x8000, +0x0000, -0x8000,        //
++      +0x0000, -0x8000, +0x0000, -0x8000);
+ 
+-  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
+-  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
+-  if ((v_dst_bits_per_pixel & 7u) != 0u) {
+-    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
+-    goto exit;
+-  }
+-  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
+-  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
+-  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048));
+-  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
+-  label__outer__continue:;
+-  while (true) {
+-    while (self->private_impl.f_pending_pad > 0u) {
+-      if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-        status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
+-        goto ok;
+-      }
+-      self->private_impl.f_pending_pad -= 1u;
+-      iop_a_src += 1u;
+-    }
+-    while (true) {
+-      if (self->private_impl.f_dst_x == self->private_impl.f_width) {
+-        self->private_impl.f_dst_x = 0u;
+-        self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
+-        if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
+-          if (self->private_impl.f_height > 0u) {
+-            self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row;
+-          }
+-          goto label__outer__break;
+-        } else if (self->private_impl.f_pad_per_row != 0u) {
+-          self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row;
+-          goto label__outer__continue;
+-        }
+-      }
+-      v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
+-      if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
+-        v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
+-      }
+-      v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
+-      if (v_i >= ((uint64_t)(v_dst.len))) {
+-        if (self->private_impl.f_bits_per_pixel > 32u) {
+-          status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
+-          goto exit;
+-        }
+-        v_src_bytes_per_pixel = (self->private_impl.f_bits_per_pixel / 8u);
+-        if (v_src_bytes_per_pixel == 0u) {
+-          status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
+-          goto exit;
+-        }
+-        v_n = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(v_src_bytes_per_pixel)));
+-        v_n = wuffs_base__u64__min(v_n, ((uint64_t)(((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x)))));
+-        v_j = v_n;
+-        while (v_j >= 8u) {
+-          if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 8u)))) {
+-            iop_a_src += (v_src_bytes_per_pixel * 8u);
+-          }
+-          v_j -= 8u;
+-        }
+-        while (v_j > 0u) {
+-          if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 1u)))) {
+-            iop_a_src += (v_src_bytes_per_pixel * 1u);
+-          }
+-          v_j -= 1u;
+-        }
+-      } else {
+-        v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
+-            &self->private_impl.f_swizzler,
+-            wuffs_base__slice_u8__subslice_i(v_dst, v_i),
+-            v_dst_palette,
+-            &iop_a_src,
+-            io2_a_src);
+-      }
+-      if (v_n == 0u) {
+-        status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
+-        goto ok;
+-      }
+-      wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
+-    }
+-  }
+-  label__outer__break:;
+-  status = wuffs_base__make_status(NULL);
+-  goto ok;
++  const __m256i m3A5E = _mm256_set1_epi16(-0x3A5E);
++  const __m256i p66E9 = _mm256_set1_epi16(+0x66E9);
++  const __m256i m581A_p492E = _mm256_set_epi16(  //
++      +0x492E, -0x581A, +0x492E, -0x581A,        //
++      +0x492E, -0x581A, +0x492E, -0x581A,        //
++      +0x492E, -0x581A, +0x492E, -0x581A,        //
++      +0x492E, -0x581A, +0x492E, -0x581A);
+ 
+-  ok:
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
++  while (x < x_end) {
++    __m256i cb_all = _mm256_lddqu_si256((const __m256i*)(const void*)up1);
++    __m256i cr_all = _mm256_lddqu_si256((const __m256i*)(const void*)up2);
++    __m256i cb_eve = _mm256_add_epi16(uFF80, _mm256_and_si256(cb_all, u00FF));
++    __m256i cr_eve = _mm256_add_epi16(uFF80, _mm256_and_si256(cr_all, u00FF));
++    __m256i cb_odd = _mm256_add_epi16(uFF80, _mm256_srli_epi16(cb_all, 8));
++    __m256i cr_odd = _mm256_add_epi16(uFF80, _mm256_srli_epi16(cr_all, 8));
+ 
+-  return status;
+-}
++    __m256i tmp_by_eve = _mm256_srai_epi16(
++        _mm256_add_epi16(
++            _mm256_mulhi_epi16(_mm256_add_epi16(cb_eve, cb_eve), m3A5E), u0001),
++        1);
++    __m256i tmp_by_odd = _mm256_srai_epi16(
++        _mm256_add_epi16(
++            _mm256_mulhi_epi16(_mm256_add_epi16(cb_odd, cb_odd), m3A5E), u0001),
++        1);
++    __m256i tmp_ry_eve = _mm256_srai_epi16(
++        _mm256_add_epi16(
++            _mm256_mulhi_epi16(_mm256_add_epi16(cr_eve, cr_eve), p66E9), u0001),
++        1);
++    __m256i tmp_ry_odd = _mm256_srai_epi16(
++        _mm256_add_epi16(
++            _mm256_mulhi_epi16(_mm256_add_epi16(cr_odd, cr_odd), p66E9), u0001),
++        1);
+ 
+-// -------- func bmp.decoder.swizzle_rle
++    __m256i by_eve =
++        _mm256_add_epi16(tmp_by_eve, _mm256_add_epi16(cb_eve, cb_eve));
++    __m256i by_odd =
++        _mm256_add_epi16(tmp_by_odd, _mm256_add_epi16(cb_odd, cb_odd));
++    __m256i ry_eve = _mm256_add_epi16(tmp_ry_eve, cr_eve);
++    __m256i ry_odd = _mm256_add_epi16(tmp_ry_odd, cr_odd);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bmp__decoder__swizzle_rle(
+-    wuffs_bmp__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++    __m256i tmp0_gy_eve_lo = _mm256_madd_epi16(  //
++        _mm256_unpacklo_epi16(cb_eve, cr_eve), m581A_p492E);
++    __m256i tmp0_gy_eve_hi = _mm256_madd_epi16(  //
++        _mm256_unpackhi_epi16(cb_eve, cr_eve), m581A_p492E);
++    __m256i tmp0_gy_odd_lo = _mm256_madd_epi16(  //
++        _mm256_unpacklo_epi16(cb_odd, cr_odd), m581A_p492E);
++    __m256i tmp0_gy_odd_hi = _mm256_madd_epi16(  //
++        _mm256_unpackhi_epi16(cb_odd, cr_odd), m581A_p492E);
+ 
+-  wuffs_base__pixel_format v_dst_pixfmt = {0};
+-  uint32_t v_dst_bits_per_pixel = 0;
+-  uint32_t v_dst_bytes_per_pixel = 0;
+-  uint64_t v_dst_bytes_per_row = 0;
+-  wuffs_base__slice_u8 v_dst_palette = {0};
+-  wuffs_base__table_u8 v_tab = {0};
+-  wuffs_base__slice_u8 v_row = {0};
+-  wuffs_base__slice_u8 v_dst = {0};
+-  uint64_t v_i = 0;
+-  uint64_t v_n = 0;
+-  uint32_t v_p0 = 0;
+-  uint8_t v_code = 0;
+-  uint8_t v_indexes[2] = {0};
+-  uint32_t v_rle_state = 0;
+-  uint32_t v_chunk_bits = 0;
+-  uint32_t v_chunk_count = 0;
++    __m256i tmp1_gy_eve_lo =
++        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_eve_lo, p8000_p0000), 16);
++    __m256i tmp1_gy_eve_hi =
++        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_eve_hi, p8000_p0000), 16);
++    __m256i tmp1_gy_odd_lo =
++        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_odd_lo, p8000_p0000), 16);
++    __m256i tmp1_gy_odd_hi =
++        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_odd_hi, p8000_p0000), 16);
+ 
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
++    __m256i gy_eve = _mm256_sub_epi16(
++        _mm256_packs_epi32(tmp1_gy_eve_lo, tmp1_gy_eve_hi), cr_eve);
++    __m256i gy_odd = _mm256_sub_epi16(
++        _mm256_packs_epi32(tmp1_gy_odd_lo, tmp1_gy_odd_hi), cr_odd);
+ 
+-  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
+-  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
+-  if ((v_dst_bits_per_pixel & 7u) != 0u) {
+-    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
+-    goto exit;
+-  }
+-  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
+-  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
+-  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048));
+-  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
+-  v_rle_state = self->private_impl.f_rle_state;
+-  label__outer__continue:;
+-  while (true) {
+-    v_row = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
+-    if (v_dst_bytes_per_row < ((uint64_t)(v_row.len))) {
+-      v_row = wuffs_base__slice_u8__subslice_j(v_row, v_dst_bytes_per_row);
+-    }
+-    label__middle__continue:;
+-    while (true) {
+-      v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
+-      if (v_i <= ((uint64_t)(v_row.len))) {
+-        v_dst = wuffs_base__slice_u8__subslice_i(v_row, v_i);
+-      } else {
+-        v_dst = wuffs_base__utility__empty_slice_u8();
+-      }
+-      while (true) {
+-        while (true) {
+-          if (v_rle_state == 0u) {
+-            if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
+-              goto label__goto_suspend__break;
+-            }
+-            v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-            iop_a_src += 1u;
+-            if (v_code == 0u) {
+-              v_rle_state = 2u;
+-              continue;
+-            }
+-            self->private_impl.f_rle_length = ((uint32_t)(v_code));
+-            v_rle_state = 1u;
+-            continue;
+-          } else if (v_rle_state == 1u) {
+-            if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
+-              goto label__goto_suspend__break;
+-            }
+-            v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-            iop_a_src += 1u;
+-            if (self->private_impl.f_bits_per_pixel == 8u) {
+-              v_p0 = 0u;
+-              while (v_p0 < self->private_impl.f_rle_length) {
+-                self->private_data.f_scratch[v_p0] = v_code;
+-                v_p0 += 1u;
+-              }
+-            } else {
+-              v_indexes[0u] = ((uint8_t)((v_code >> 4u)));
+-              v_indexes[1u] = (v_code & 15u);
+-              v_p0 = 0u;
+-              while (v_p0 < self->private_impl.f_rle_length) {
+-                self->private_data.f_scratch[(v_p0 + 0u)] = v_indexes[0u];
+-                self->private_data.f_scratch[(v_p0 + 1u)] = v_indexes[1u];
+-                v_p0 += 2u;
+-              }
+-            }
+-            wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, self->private_impl.f_rle_length));
+-            wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, self->private_impl.f_rle_length);
+-            v_rle_state = 0u;
+-            goto label__middle__continue;
+-          } else if (v_rle_state == 2u) {
+-            if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
+-              goto label__goto_suspend__break;
+-            }
+-            v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-            iop_a_src += 1u;
+-            if (v_code < 2u) {
+-              if ((self->private_impl.f_dst_y >= self->private_impl.f_height) && (v_code == 0u)) {
+-                status = wuffs_base__make_status(wuffs_bmp__error__bad_rle_compression);
+-                goto exit;
+-              }
+-              wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_dst, v_dst_palette, 18446744073709551615u);
+-              self->private_impl.f_dst_x = 0u;
+-              self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
+-              if (v_code > 0u) {
+-                goto label__outer__break;
+-              }
+-              v_rle_state = 0u;
+-              goto label__outer__continue;
+-            } else if (v_code == 2u) {
+-              v_rle_state = 4u;
+-              continue;
+-            }
+-            self->private_impl.f_rle_length = ((uint32_t)(v_code));
+-            self->private_impl.f_rle_padded = ((self->private_impl.f_bits_per_pixel == 8u) && ((v_code & 1u) != 0u));
+-            v_rle_state = 3u;
+-            continue;
+-          } else if (v_rle_state == 3u) {
+-            if (self->private_impl.f_bits_per_pixel == 8u) {
+-              v_n = wuffs_base__pixel_swizzler__limited_swizzle_u32_interleaved_from_reader(
+-                  &self->private_impl.f_swizzler,
+-                  self->private_impl.f_rle_length,
+-                  v_dst,
+-                  v_dst_palette,
+-                  &iop_a_src,
+-                  io2_a_src);
+-              wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
+-              wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_rle_length, ((uint32_t)(v_n)));
+-            } else {
+-              v_chunk_count = ((self->private_impl.f_rle_length + 3u) / 4u);
+-              v_p0 = 0u;
+-              while ((v_chunk_count > 0u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 2u)) {
+-                v_chunk_bits = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
+-                iop_a_src += 2u;
+-                self->private_data.f_scratch[(v_p0 + 0u)] = ((uint8_t)((15u & (v_chunk_bits >> 12u))));
+-                self->private_data.f_scratch[(v_p0 + 1u)] = ((uint8_t)((15u & (v_chunk_bits >> 8u))));
+-                self->private_data.f_scratch[(v_p0 + 2u)] = ((uint8_t)((15u & (v_chunk_bits >> 4u))));
+-                self->private_data.f_scratch[(v_p0 + 3u)] = ((uint8_t)((15u & (v_chunk_bits >> 0u))));
+-                v_p0 = ((v_p0 & 255u) + 4u);
+-                v_chunk_count -= 1u;
+-              }
+-              v_p0 = wuffs_base__u32__min(v_p0, self->private_impl.f_rle_length);
+-              wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, v_p0));
+-              wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, v_p0);
+-              wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_rle_length, v_p0);
+-            }
+-            if (self->private_impl.f_rle_length > 0u) {
+-              goto label__goto_suspend__break;
+-            }
+-            if (self->private_impl.f_rle_padded) {
+-              if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
+-                goto label__goto_suspend__break;
+-              }
+-              iop_a_src += 1u;
+-              self->private_impl.f_rle_padded = false;
+-            }
+-            v_rle_state = 0u;
+-            goto label__middle__continue;
+-          } else if (v_rle_state == 4u) {
+-            if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
+-              goto label__goto_suspend__break;
+-            }
+-            self->private_impl.f_rle_delta_x = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-            iop_a_src += 1u;
+-            v_rle_state = 5u;
+-            continue;
+-          }
+-          if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
+-            goto label__goto_suspend__break;
+-          }
+-          v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-          iop_a_src += 1u;
+-          if (self->private_impl.f_rle_delta_x > 0u) {
+-            wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_dst, v_dst_palette, ((uint64_t)(self->private_impl.f_rle_delta_x)));
+-            wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(self->private_impl.f_rle_delta_x)));
+-            self->private_impl.f_rle_delta_x = 0u;
+-            if (self->private_impl.f_dst_x > self->private_impl.f_width) {
+-              status = wuffs_base__make_status(wuffs_bmp__error__bad_rle_compression);
+-              goto exit;
+-            }
+-          }
+-          if (v_code > 0u) {
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wconversion"
+-#endif
+-            v_code -= 1u;
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-            while (true) {
+-              self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
+-              if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
+-                status = wuffs_base__make_status(wuffs_bmp__error__bad_rle_compression);
+-                goto exit;
+-              }
+-              v_row = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
+-              if (v_dst_bytes_per_row < ((uint64_t)(v_row.len))) {
+-                v_row = wuffs_base__slice_u8__subslice_j(v_row, v_dst_bytes_per_row);
+-              }
+-              if (v_code <= 0u) {
+-                wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_row, v_dst_palette, ((uint64_t)(self->private_impl.f_dst_x)));
+-                break;
+-              }
+-              wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_row, v_dst_palette, 18446744073709551615u);
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wconversion"
+-#endif
+-              v_code -= 1u;
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-            }
+-          }
+-          v_rle_state = 0u;
+-          goto label__middle__continue;
+-        }
+-      }
+-      label__goto_suspend__break:;
+-      self->private_impl.f_rle_state = v_rle_state;
+-      status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
+-      goto ok;
+-    }
+-  }
+-  label__outer__break:;
+-  while (self->private_impl.f_dst_y < self->private_impl.f_height) {
+-    v_row = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
+-    if (v_dst_bytes_per_row < ((uint64_t)(v_row.len))) {
+-      v_row = wuffs_base__slice_u8__subslice_j(v_row, v_dst_bytes_per_row);
+-    }
+-    wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_row, v_dst_palette, 18446744073709551615u);
+-    self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
+-  }
+-  status = wuffs_base__make_status(NULL);
+-  goto ok;
++    __m256i yy_all = _mm256_lddqu_si256((const __m256i*)(const void*)up0);
++    __m256i yy_eve = _mm256_and_si256(yy_all, u00FF);
++    __m256i yy_odd = _mm256_srli_epi16(yy_all, 8);
+ 
+-  ok:
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
++    __m256i loose_b_eve = _mm256_add_epi16(by_eve, yy_eve);
++    __m256i loose_b_odd = _mm256_add_epi16(by_odd, yy_odd);
++    __m256i packed_b_eve = _mm256_packus_epi16(loose_b_eve, loose_b_eve);
++    __m256i packed_b_odd = _mm256_packus_epi16(loose_b_odd, loose_b_odd);
+ 
+-  return status;
+-}
++    __m256i loose_g_eve = _mm256_add_epi16(gy_eve, yy_eve);
++    __m256i loose_g_odd = _mm256_add_epi16(gy_odd, yy_odd);
++    __m256i packed_g_eve = _mm256_packus_epi16(loose_g_eve, loose_g_eve);
++    __m256i packed_g_odd = _mm256_packus_epi16(loose_g_odd, loose_g_odd);
+ 
+-// -------- func bmp.decoder.swizzle_bitfields
++    __m256i loose_r_eve = _mm256_add_epi16(ry_eve, yy_eve);
++    __m256i loose_r_odd = _mm256_add_epi16(ry_odd, yy_odd);
++    __m256i packed_r_eve = _mm256_packus_epi16(loose_r_eve, loose_r_eve);
++    __m256i packed_r_odd = _mm256_packus_epi16(loose_r_odd, loose_r_odd);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bmp__decoder__swizzle_bitfields(
+-    wuffs_bmp__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++    // § Note the swapped B and R channels.
++    __m256i mix00 = _mm256_unpacklo_epi8(packed_r_eve, packed_g_eve);
++    __m256i mix01 = _mm256_unpacklo_epi8(packed_r_odd, packed_g_odd);
++    __m256i mix02 = _mm256_unpacklo_epi8(packed_b_eve, uFFFF);
++    __m256i mix03 = _mm256_unpacklo_epi8(packed_b_odd, uFFFF);
+ 
+-  wuffs_base__pixel_format v_dst_pixfmt = {0};
+-  uint32_t v_dst_bits_per_pixel = 0;
+-  uint32_t v_dst_bytes_per_pixel = 0;
+-  uint64_t v_dst_bytes_per_row = 0;
+-  wuffs_base__slice_u8 v_dst_palette = {0};
+-  wuffs_base__table_u8 v_tab = {0};
+-  wuffs_base__slice_u8 v_dst = {0};
+-  uint64_t v_i = 0;
+-  uint64_t v_n = 0;
+-  uint32_t v_p0 = 0;
+-  uint32_t v_p1 = 0;
+-  uint32_t v_p1_temp = 0;
+-  uint32_t v_num_bits = 0;
+-  uint32_t v_c = 0;
+-  uint32_t v_c32 = 0;
+-  uint32_t v_channel = 0;
++    __m256i mix10 = _mm256_unpacklo_epi16(mix00, mix02);
++    __m256i mix11 = _mm256_unpacklo_epi16(mix01, mix03);
++    __m256i mix12 = _mm256_unpackhi_epi16(mix00, mix02);
++    __m256i mix13 = _mm256_unpackhi_epi16(mix01, mix03);
+ 
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
++    __m256i mix20 = _mm256_unpacklo_epi32(mix10, mix11);
++    __m256i mix21 = _mm256_unpackhi_epi32(mix10, mix11);
++    __m256i mix22 = _mm256_unpacklo_epi32(mix12, mix13);
++    __m256i mix23 = _mm256_unpackhi_epi32(mix12, mix13);
+ 
+-  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
+-  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
+-  if ((v_dst_bits_per_pixel & 7u) != 0u) {
+-    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
+-    goto exit;
+-  }
+-  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
+-  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
+-  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048));
+-  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
+-  label__outer__continue:;
+-  while (true) {
+-    while (self->private_impl.f_pending_pad > 0u) {
+-      if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-        status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
+-        goto ok;
+-      }
+-      self->private_impl.f_pending_pad -= 1u;
+-      iop_a_src += 1u;
+-    }
+-    while (true) {
+-      if (self->private_impl.f_dst_x == self->private_impl.f_width) {
+-        self->private_impl.f_dst_x = 0u;
+-        self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
+-        if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
+-          if (self->private_impl.f_height > 0u) {
+-            self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row;
+-          }
+-          goto label__outer__break;
+-        } else if (self->private_impl.f_pad_per_row != 0u) {
+-          self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row;
+-          goto label__outer__continue;
+-        }
+-      }
+-      v_p1_temp = ((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x));
+-      v_p1 = wuffs_base__u32__min(v_p1_temp, 256u);
+-      v_p0 = 0u;
+-      while (v_p0 < v_p1) {
+-        if (self->private_impl.f_bits_per_pixel == 16u) {
+-          if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
+-            break;
+-          }
+-          v_c32 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-          iop_a_src += 2u;
+-        } else {
+-          if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
+-            break;
+-          }
+-          v_c32 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-          iop_a_src += 4u;
+-        }
+-        v_channel = 0u;
+-        while (v_channel < 4u) {
+-          if (self->private_impl.f_channel_num_bits[v_channel] == 0u) {
+-            self->private_data.f_scratch[((8u * v_p0) + (2u * v_channel) + 0u)] = 255u;
+-            self->private_data.f_scratch[((8u * v_p0) + (2u * v_channel) + 1u)] = 255u;
+-          } else {
+-            v_c = ((v_c32 & self->private_impl.f_channel_masks[v_channel]) >> self->private_impl.f_channel_shifts[v_channel]);
+-            v_num_bits = ((uint32_t)(self->private_impl.f_channel_num_bits[v_channel]));
+-            while (v_num_bits < 16u) {
+-              v_c |= ((uint32_t)(v_c << v_num_bits));
+-              v_num_bits *= 2u;
+-            }
+-            v_c >>= (v_num_bits - 16u);
+-            self->private_data.f_scratch[((8u * v_p0) + (2u * v_channel) + 0u)] = ((uint8_t)((v_c >> 0u)));
+-            self->private_data.f_scratch[((8u * v_p0) + (2u * v_channel) + 1u)] = ((uint8_t)((v_c >> 8u)));
+-          }
+-          v_channel += 1u;
+-        }
+-        v_p0 += 1u;
+-      }
+-      v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
+-      if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
+-        v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
+-      }
+-      v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
+-      if (v_i >= ((uint64_t)(v_dst.len))) {
+-        v_n = ((uint64_t)(v_p0));
+-      } else {
+-        v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, (8u * v_p0)));
+-      }
+-      if (v_n == 0u) {
+-        status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
+-        goto ok;
+-      }
+-      wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
+-    }
+-  }
+-  label__outer__break:;
+-  status = wuffs_base__make_status(NULL);
+-  goto ok;
++    __m256i mix30 = _mm256_permute2x128_si256(mix20, mix21, 0x20);
++    __m256i mix31 = _mm256_permute2x128_si256(mix22, mix23, 0x20);
++    __m256i mix32 = _mm256_permute2x128_si256(mix20, mix21, 0x31);
++    __m256i mix33 = _mm256_permute2x128_si256(mix22, mix23, 0x31);
+ 
+-  ok:
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
++    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x00), mix30);
++    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x20), mix31);
++    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x40), mix32);
++    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x60), mix33);
+ 
+-  return status;
++    uint32_t n = 32u - (31u & (x - x_end));
++    dst_iter += 4u * n;
++    up0 += n;
++    up1 += n;
++    up2 += n;
++    x += n;
++  }
+ }
+ 
+-// -------- func bmp.decoder.swizzle_low_bit_depth
++#if defined(__GNUC__) && !defined(__clang__)
++// No-op.
++#else
++WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
++static const uint8_t*  //
++wuffs_private_impl__swizzle_ycc__upsample_inv_h2v2_triangle_x86_avx2(
++    uint8_t* dst_ptr,
++    const uint8_t* src_ptr_major,
++    const uint8_t* src_ptr_minor,
++    size_t src_len,
++    uint32_t h1v2_bias_ignored,
++    bool first_column,
++    bool last_column) {
++  uint8_t* dp = dst_ptr;
++  const uint8_t* sp_major = src_ptr_major;
++  const uint8_t* sp_minor = src_ptr_minor;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bmp__decoder__swizzle_low_bit_depth(
+-    wuffs_bmp__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++  if (first_column) {
++    src_len--;
++    if ((src_len <= 0u) && last_column) {
++      uint32_t sv = (12u * ((uint32_t)(*sp_major++))) +  //
++                    (4u * ((uint32_t)(*sp_minor++)));
++      *dp++ = (uint8_t)((sv + 8u) >> 4u);
++      *dp++ = (uint8_t)((sv + 7u) >> 4u);
++      return dst_ptr;
++    }
+ 
+-  wuffs_base__pixel_format v_dst_pixfmt = {0};
+-  uint32_t v_dst_bits_per_pixel = 0;
+-  uint32_t v_dst_bytes_per_pixel = 0;
+-  uint64_t v_dst_bytes_per_row = 0;
+-  wuffs_base__slice_u8 v_dst_palette = {0};
+-  wuffs_base__table_u8 v_tab = {0};
+-  wuffs_base__slice_u8 v_dst = {0};
+-  uint64_t v_i = 0;
+-  uint64_t v_n = 0;
+-  uint32_t v_p0 = 0;
+-  uint32_t v_chunk_bits = 0;
+-  uint32_t v_chunk_count = 0;
+-  uint32_t v_pixels_per_chunk = 0;
++    uint32_t sv_major_m1 = sp_major[-0];  // Clamp offset to zero.
++    uint32_t sv_minor_m1 = sp_minor[-0];  // Clamp offset to zero.
++    uint32_t sv_major_p1 = sp_major[+1];
++    uint32_t sv_minor_p1 = sp_minor[+1];
+ 
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
++    uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
++                  (3u * ((uint32_t)(*sp_minor++)));
++    *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
++    *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
++    if (src_len <= 0u) {
++      return dst_ptr;
++    }
+   }
+ 
+-  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
+-  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
+-  if ((v_dst_bits_per_pixel & 7u) != 0u) {
+-    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
+-    goto exit;
+-  }
+-  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
+-  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
+-  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048));
+-  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
+-  while (true) {
+-    if (self->private_impl.f_dst_x == self->private_impl.f_width) {
+-      self->private_impl.f_dst_x = 0u;
+-      self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
+-      if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
+-        break;
+-      }
+-    }
+-    v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
+-    if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
+-      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
+-    }
+-    v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
+-    if (v_i >= ((uint64_t)(v_dst.len))) {
+-      if (self->private_impl.f_bits_per_pixel == 1u) {
+-        v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 31u) / 32u);
+-        v_pixels_per_chunk = 32u;
+-      } else if (self->private_impl.f_bits_per_pixel == 2u) {
+-        v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 15u) / 16u);
+-        v_pixels_per_chunk = 16u;
+-      } else {
+-        v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 7u) / 8u);
+-        v_pixels_per_chunk = 8u;
+-      }
+-      while ((v_chunk_count >= 64u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 256u)) {
+-        iop_a_src += 256u;
+-        self->private_impl.f_dst_x = wuffs_base__u32__min(self->private_impl.f_width, ((uint32_t)(self->private_impl.f_dst_x + (v_pixels_per_chunk * 64u))));
+-        v_chunk_count -= 64u;
+-      }
+-      while ((v_chunk_count >= 8u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 32u)) {
+-        iop_a_src += 32u;
+-        self->private_impl.f_dst_x = wuffs_base__u32__min(self->private_impl.f_width, ((uint32_t)(self->private_impl.f_dst_x + (v_pixels_per_chunk * 8u))));
+-        v_chunk_count -= 8u;
+-      }
+-      while (v_chunk_count > 0u) {
+-        if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
+-          status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
+-          goto ok;
+-        }
+-        iop_a_src += 4u;
+-        self->private_impl.f_dst_x = wuffs_base__u32__min(self->private_impl.f_width, ((uint32_t)(self->private_impl.f_dst_x + (v_pixels_per_chunk * 1u))));
+-        v_chunk_count -= 1u;
+-      }
+-      continue;
+-    }
+-    v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_i);
+-    v_p0 = 0u;
+-    if (self->private_impl.f_bits_per_pixel == 1u) {
+-      v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 31u) / 32u);
+-      v_chunk_count = wuffs_base__u32__min(v_chunk_count, 16u);
+-      while ((v_chunk_count > 0u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 4u)) {
+-        v_chunk_bits = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-        iop_a_src += 4u;
+-        self->private_data.f_scratch[(v_p0 + 0u)] = ((uint8_t)((1u & (v_chunk_bits >> 31u))));
+-        self->private_data.f_scratch[(v_p0 + 1u)] = ((uint8_t)((1u & (v_chunk_bits >> 30u))));
+-        self->private_data.f_scratch[(v_p0 + 2u)] = ((uint8_t)((1u & (v_chunk_bits >> 29u))));
+-        self->private_data.f_scratch[(v_p0 + 3u)] = ((uint8_t)((1u & (v_chunk_bits >> 28u))));
+-        self->private_data.f_scratch[(v_p0 + 4u)] = ((uint8_t)((1u & (v_chunk_bits >> 27u))));
+-        self->private_data.f_scratch[(v_p0 + 5u)] = ((uint8_t)((1u & (v_chunk_bits >> 26u))));
+-        self->private_data.f_scratch[(v_p0 + 6u)] = ((uint8_t)((1u & (v_chunk_bits >> 25u))));
+-        self->private_data.f_scratch[(v_p0 + 7u)] = ((uint8_t)((1u & (v_chunk_bits >> 24u))));
+-        self->private_data.f_scratch[(v_p0 + 8u)] = ((uint8_t)((1u & (v_chunk_bits >> 23u))));
+-        self->private_data.f_scratch[(v_p0 + 9u)] = ((uint8_t)((1u & (v_chunk_bits >> 22u))));
+-        self->private_data.f_scratch[(v_p0 + 10u)] = ((uint8_t)((1u & (v_chunk_bits >> 21u))));
+-        self->private_data.f_scratch[(v_p0 + 11u)] = ((uint8_t)((1u & (v_chunk_bits >> 20u))));
+-        self->private_data.f_scratch[(v_p0 + 12u)] = ((uint8_t)((1u & (v_chunk_bits >> 19u))));
+-        self->private_data.f_scratch[(v_p0 + 13u)] = ((uint8_t)((1u & (v_chunk_bits >> 18u))));
+-        self->private_data.f_scratch[(v_p0 + 14u)] = ((uint8_t)((1u & (v_chunk_bits >> 17u))));
+-        self->private_data.f_scratch[(v_p0 + 15u)] = ((uint8_t)((1u & (v_chunk_bits >> 16u))));
+-        self->private_data.f_scratch[(v_p0 + 16u)] = ((uint8_t)((1u & (v_chunk_bits >> 15u))));
+-        self->private_data.f_scratch[(v_p0 + 17u)] = ((uint8_t)((1u & (v_chunk_bits >> 14u))));
+-        self->private_data.f_scratch[(v_p0 + 18u)] = ((uint8_t)((1u & (v_chunk_bits >> 13u))));
+-        self->private_data.f_scratch[(v_p0 + 19u)] = ((uint8_t)((1u & (v_chunk_bits >> 12u))));
+-        self->private_data.f_scratch[(v_p0 + 20u)] = ((uint8_t)((1u & (v_chunk_bits >> 11u))));
+-        self->private_data.f_scratch[(v_p0 + 21u)] = ((uint8_t)((1u & (v_chunk_bits >> 10u))));
+-        self->private_data.f_scratch[(v_p0 + 22u)] = ((uint8_t)((1u & (v_chunk_bits >> 9u))));
+-        self->private_data.f_scratch[(v_p0 + 23u)] = ((uint8_t)((1u & (v_chunk_bits >> 8u))));
+-        self->private_data.f_scratch[(v_p0 + 24u)] = ((uint8_t)((1u & (v_chunk_bits >> 7u))));
+-        self->private_data.f_scratch[(v_p0 + 25u)] = ((uint8_t)((1u & (v_chunk_bits >> 6u))));
+-        self->private_data.f_scratch[(v_p0 + 26u)] = ((uint8_t)((1u & (v_chunk_bits >> 5u))));
+-        self->private_data.f_scratch[(v_p0 + 27u)] = ((uint8_t)((1u & (v_chunk_bits >> 4u))));
+-        self->private_data.f_scratch[(v_p0 + 28u)] = ((uint8_t)((1u & (v_chunk_bits >> 3u))));
+-        self->private_data.f_scratch[(v_p0 + 29u)] = ((uint8_t)((1u & (v_chunk_bits >> 2u))));
+-        self->private_data.f_scratch[(v_p0 + 30u)] = ((uint8_t)((1u & (v_chunk_bits >> 1u))));
+-        self->private_data.f_scratch[(v_p0 + 31u)] = ((uint8_t)((1u & (v_chunk_bits >> 0u))));
+-        v_p0 = ((v_p0 & 511u) + 32u);
+-        v_chunk_count -= 1u;
+-      }
+-    } else if (self->private_impl.f_bits_per_pixel == 2u) {
+-      v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 15u) / 16u);
+-      v_chunk_count = wuffs_base__u32__min(v_chunk_count, 32u);
+-      while ((v_chunk_count > 0u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 4u)) {
+-        v_chunk_bits = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-        iop_a_src += 4u;
+-        self->private_data.f_scratch[(v_p0 + 0u)] = ((uint8_t)((3u & (v_chunk_bits >> 30u))));
+-        self->private_data.f_scratch[(v_p0 + 1u)] = ((uint8_t)((3u & (v_chunk_bits >> 28u))));
+-        self->private_data.f_scratch[(v_p0 + 2u)] = ((uint8_t)((3u & (v_chunk_bits >> 26u))));
+-        self->private_data.f_scratch[(v_p0 + 3u)] = ((uint8_t)((3u & (v_chunk_bits >> 24u))));
+-        self->private_data.f_scratch[(v_p0 + 4u)] = ((uint8_t)((3u & (v_chunk_bits >> 22u))));
+-        self->private_data.f_scratch[(v_p0 + 5u)] = ((uint8_t)((3u & (v_chunk_bits >> 20u))));
+-        self->private_data.f_scratch[(v_p0 + 6u)] = ((uint8_t)((3u & (v_chunk_bits >> 18u))));
+-        self->private_data.f_scratch[(v_p0 + 7u)] = ((uint8_t)((3u & (v_chunk_bits >> 16u))));
+-        self->private_data.f_scratch[(v_p0 + 8u)] = ((uint8_t)((3u & (v_chunk_bits >> 14u))));
+-        self->private_data.f_scratch[(v_p0 + 9u)] = ((uint8_t)((3u & (v_chunk_bits >> 12u))));
+-        self->private_data.f_scratch[(v_p0 + 10u)] = ((uint8_t)((3u & (v_chunk_bits >> 10u))));
+-        self->private_data.f_scratch[(v_p0 + 11u)] = ((uint8_t)((3u & (v_chunk_bits >> 8u))));
+-        self->private_data.f_scratch[(v_p0 + 12u)] = ((uint8_t)((3u & (v_chunk_bits >> 6u))));
+-        self->private_data.f_scratch[(v_p0 + 13u)] = ((uint8_t)((3u & (v_chunk_bits >> 4u))));
+-        self->private_data.f_scratch[(v_p0 + 14u)] = ((uint8_t)((3u & (v_chunk_bits >> 2u))));
+-        self->private_data.f_scratch[(v_p0 + 15u)] = ((uint8_t)((3u & (v_chunk_bits >> 0u))));
+-        v_p0 = ((v_p0 & 511u) + 16u);
+-        v_chunk_count -= 1u;
+-      }
+-    } else {
+-      v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 7u) / 8u);
+-      v_chunk_count = wuffs_base__u32__min(v_chunk_count, 64u);
+-      while ((v_chunk_count > 0u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 4u)) {
+-        v_chunk_bits = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-        iop_a_src += 4u;
+-        self->private_data.f_scratch[(v_p0 + 0u)] = ((uint8_t)((15u & (v_chunk_bits >> 28u))));
+-        self->private_data.f_scratch[(v_p0 + 1u)] = ((uint8_t)((15u & (v_chunk_bits >> 24u))));
+-        self->private_data.f_scratch[(v_p0 + 2u)] = ((uint8_t)((15u & (v_chunk_bits >> 20u))));
+-        self->private_data.f_scratch[(v_p0 + 3u)] = ((uint8_t)((15u & (v_chunk_bits >> 16u))));
+-        self->private_data.f_scratch[(v_p0 + 4u)] = ((uint8_t)((15u & (v_chunk_bits >> 12u))));
+-        self->private_data.f_scratch[(v_p0 + 5u)] = ((uint8_t)((15u & (v_chunk_bits >> 8u))));
+-        self->private_data.f_scratch[(v_p0 + 6u)] = ((uint8_t)((15u & (v_chunk_bits >> 4u))));
+-        self->private_data.f_scratch[(v_p0 + 7u)] = ((uint8_t)((15u & (v_chunk_bits >> 0u))));
+-        v_p0 = ((v_p0 & 511u) + 8u);
+-        v_chunk_count -= 1u;
+-      }
+-    }
+-    v_p0 = wuffs_base__u32__min(v_p0, wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x));
+-    v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, v_p0));
+-    if (v_n == 0u) {
+-      status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
+-      goto ok;
+-    }
+-    wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
+-  }
+-  status = wuffs_base__make_status(NULL);
+-  goto ok;
+-
+-  ok:
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
+-
+-  return status;
+-}
+-
+-// -------- func bmp.decoder.frame_dirty_rect
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
+-wuffs_bmp__decoder__frame_dirty_rect(
+-    const wuffs_bmp__decoder* self) {
+-  if (!self) {
+-    return wuffs_base__utility__empty_rect_ie_u32();
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_rect_ie_u32();
++  if (last_column) {
++    src_len--;
+   }
+ 
+-  return wuffs_base__utility__make_rect_ie_u32(
+-      0u,
+-      0u,
+-      self->private_impl.f_width,
+-      self->private_impl.f_height);
+-}
++  if (src_len < 32) {
++    // This fallback is the same as the non-SIMD-capable code path.
++    for (; src_len > 0u; src_len--) {
++      uint32_t sv_major_m1 = sp_major[-1];
++      uint32_t sv_minor_m1 = sp_minor[-1];
++      uint32_t sv_major_p1 = sp_major[+1];
++      uint32_t sv_minor_p1 = sp_minor[+1];
+ 
+-// -------- func bmp.decoder.num_animation_loops
++      uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
++                    (3u * ((uint32_t)(*sp_minor++)));
++      *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
++      *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
++    }
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_bmp__decoder__num_animation_loops(
+-    const wuffs_bmp__decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
++  } else {
++    while (src_len > 0u) {
++      // Load 1+32+1 samples (six u8x32 vectors) from the major (jxx) and minor
++      // (nxx) rows.
++      //
++      // major_p0 = [j00 j01 j02 j03 .. j28 j29 j30 j31]   // p0 = "plus  0"
++      // minor_p0 = [n00 n01 n02 n03 .. n28 n29 n30 n31]   // p0 = "plus  0"
++      // major_m1 = [jm1 j00 j01 j02 .. j27 j28 j29 j30]   // m1 = "minus 1"
++      // minor_m1 = [nm1 n00 n01 n02 .. n27 n28 n29 n30]   // m1 = "minus 1"
++      // major_p1 = [j01 j02 j03 j04 .. j29 j30 j31 j32]   // p1 = "plus  1"
++      // minor_p1 = [n01 n02 n03 n04 .. n29 n30 n31 n32]   // p1 = "plus  1"
++      __m256i major_p0 =
++          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_major + 0));
++      __m256i minor_p0 =
++          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_minor + 0));
++      __m256i major_m1 =
++          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_major - 1));
++      __m256i minor_m1 =
++          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_minor - 1));
++      __m256i major_p1 =
++          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_major + 1));
++      __m256i minor_p1 =
++          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_minor + 1));
+ 
+-  return 0u;
+-}
++      // Unpack, staying with u8x32 vectors.
++      //
++      // step1_p0_lo = [j00 n00 j01 n01 .. j07 n07  j16 n16 j17 n17 .. j23 n23]
++      // step1_p0_hi = [j08 n08 j09 n09 .. j15 n15  j24 n24 j25 n25 .. j31 n31]
++      // step1_m1_lo = [jm1 nm1 j00 n00 .. j06 n06  j15 n15 j16 n16 .. j22 n22]
++      // step1_m1_hi = [j07 n07 j08 n08 .. j14 n14  j23 n23 j24 n24 .. j30 n30]
++      // step1_p1_lo = [j01 n01 j02 n02 .. j08 n08  j17 n17 j18 n18 .. j24 n24]
++      // step1_p1_hi = [j09 n09 j10 n10 .. j16 n16  j25 n25 j26 n26 .. j32 n32]
++      __m256i step1_p0_lo = _mm256_unpacklo_epi8(major_p0, minor_p0);
++      __m256i step1_p0_hi = _mm256_unpackhi_epi8(major_p0, minor_p0);
++      __m256i step1_m1_lo = _mm256_unpacklo_epi8(major_m1, minor_m1);
++      __m256i step1_m1_hi = _mm256_unpackhi_epi8(major_m1, minor_m1);
++      __m256i step1_p1_lo = _mm256_unpacklo_epi8(major_p1, minor_p1);
++      __m256i step1_p1_hi = _mm256_unpackhi_epi8(major_p1, minor_p1);
+ 
+-// -------- func bmp.decoder.num_decoded_frame_configs
++      // Multiply-add to get u16x16 vectors.
++      //
++      // step2_p0_lo = [9*j00+3*n00 9*j01+3*n01 .. 9*j23+3*n23]
++      // step2_p0_hi = [9*j08+3*n08 9*j09+3*n09 .. 9*j31+3*n31]
++      // step2_m1_lo = [3*jm1+1*nm1 3*j00+1*n00 .. 3*j22+1*n22]
++      // step2_m1_hi = [3*j07+1*n07 3*j08+1*n08 .. 3*j30+1*n30]
++      // step2_p1_lo = [3*j01+1*n01 3*j02+1*n02 .. 3*j24+1*n24]
++      // step2_p1_hi = [3*j09+1*n09 3*j10+1*n10 .. 3*j32+1*n32]
++      const __m256i k0309 = _mm256_set1_epi16(0x0309);
++      const __m256i k0103 = _mm256_set1_epi16(0x0103);
++      __m256i step2_p0_lo = _mm256_maddubs_epi16(step1_p0_lo, k0309);
++      __m256i step2_p0_hi = _mm256_maddubs_epi16(step1_p0_hi, k0309);
++      __m256i step2_m1_lo = _mm256_maddubs_epi16(step1_m1_lo, k0103);
++      __m256i step2_m1_hi = _mm256_maddubs_epi16(step1_m1_hi, k0103);
++      __m256i step2_p1_lo = _mm256_maddubs_epi16(step1_p1_lo, k0103);
++      __m256i step2_p1_hi = _mm256_maddubs_epi16(step1_p1_hi, k0103);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_bmp__decoder__num_decoded_frame_configs(
+-    const wuffs_bmp__decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
++      // Compute the weighted sums of (p0, m1) and (p0, p1). For example:
++      //
++      // step3_m1_lo[00] = ((9*j00) + (3*n00) + (3*jm1) + (1*nm1)) as u16
++      // step3_p1_hi[15] = ((9*j31) + (3*n31) + (3*j32) + (1*n32)) as u16
++      __m256i step3_m1_lo = _mm256_add_epi16(step2_p0_lo, step2_m1_lo);
++      __m256i step3_m1_hi = _mm256_add_epi16(step2_p0_hi, step2_m1_hi);
++      __m256i step3_p1_lo = _mm256_add_epi16(step2_p0_lo, step2_p1_lo);
++      __m256i step3_p1_hi = _mm256_add_epi16(step2_p0_hi, step2_p1_hi);
+ 
+-  if (self->private_impl.f_call_sequence > 32u) {
+-    return 1u;
+-  }
+-  return 0u;
+-}
++      // Bias by 8 (on the left) or 7 (on the right) and then divide by 16
++      // (which is 9+3+3+1) to get a weighted average. On the left (m1), shift
++      // the u16 right value by 4. On the right (p1), shift right by 4 and then
++      // shift left by 8 so that, when still in the u16x16 little-endian
++      // interpretation, we have:
++      //  - m1_element =  (etcetera + 8) >> 4
++      //  - p1_element = ((etcetera + 7) >> 4) << 8
++      //
++      // step4_m1_lo = [0x00?? 0x00?? ... 0x00?? 0x00??]
++      // step4_p1_lo = [0x??00 0x??00 ... 0x??00 0x??00]
++      // step4_m1_hi = [0x00?? 0x00?? ... 0x00?? 0x00??]
++      // step4_p1_hi = [0x??00 0x??00 ... 0x??00 0x??00]
++      __m256i step4_m1_lo = _mm256_srli_epi16(
++          _mm256_add_epi16(step3_m1_lo, _mm256_set1_epi16(8)), 4);
++      __m256i step4_p1_lo = _mm256_slli_epi16(
++          _mm256_srli_epi16(_mm256_add_epi16(step3_p1_lo, _mm256_set1_epi16(7)),
++                            4),
++          8);
++      __m256i step4_m1_hi = _mm256_srli_epi16(
++          _mm256_add_epi16(step3_m1_hi, _mm256_set1_epi16(8)), 4);
++      __m256i step4_p1_hi = _mm256_slli_epi16(
++          _mm256_srli_epi16(_mm256_add_epi16(step3_p1_hi, _mm256_set1_epi16(7)),
++                            4),
++          8);
+ 
+-// -------- func bmp.decoder.num_decoded_frames
++      // Bitwise-or two "0x00"-rich u16x16 vectors to get a u8x32 vector. Do
++      // that twice. Once for the low columns and once for the high columns.
++      //
++      // In terms of jxx (major row) or nxx (minor row) source samples:
++      //  - low  columns means ( 0 ..  8; 16 .. 24).
++      //  - high columns means ( 8 .. 16; 24 .. 32).
++      //
++      // In terms of dxx destination samples (there are twice as many):
++      //  - low  columns means ( 0 .. 16; 32 .. 48).
++      //  - high columns means (16 .. 32; 48 .. 64).
++      //
++      // step5_lo = [d00 d01 .. d14 d15  d32 d33 .. d46 d47]
++      // step5_hi = [d16 d17 .. d30 d31  d48 d49 .. d62 d63]
++      //
++      // The d00, d02 ... d62 even elements come from (p0, m1) weighted sums.
++      // The d01, d03 ... d63 odd  elements come from (p0, p1) weighted sums.
++      __m256i step5_lo = _mm256_or_si256(step4_m1_lo, step4_p1_lo);
++      __m256i step5_hi = _mm256_or_si256(step4_m1_hi, step4_p1_hi);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_bmp__decoder__num_decoded_frames(
+-    const wuffs_bmp__decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
++      // Permute and store.
++      //
++      // step6_00_31 = [d00 d01 .. d14 d15  d16 d17 .. d30 d31]
++      // step6_32_63 = [d32 d33 .. d46 d47  d48 d49 .. d62 d63]
++      __m256i step6_00_31 = _mm256_permute2x128_si256(step5_lo, step5_hi, 0x20);
++      __m256i step6_32_63 = _mm256_permute2x128_si256(step5_lo, step5_hi, 0x31);
++      _mm256_storeu_si256((__m256i*)(void*)(dp + 0x00), step6_00_31);
++      _mm256_storeu_si256((__m256i*)(void*)(dp + 0x20), step6_32_63);
+ 
+-  if (self->private_impl.f_call_sequence > 64u) {
+-    return 1u;
++      // Advance by up to 32 source samples (64 destination samples). The first
++      // iteration might be smaller than 32 so that all of the remaining steps
++      // are exactly 32.
++      size_t n = 32u - (31u & (0u - src_len));
++      dp += 2u * n;
++      sp_major += n;
++      sp_minor += n;
++      src_len -= n;
++    }
+   }
+-  return 0u;
+-}
+ 
+-// -------- func bmp.decoder.restart_frame
++  if (last_column) {
++    uint32_t sv_major_m1 = sp_major[-1];
++    uint32_t sv_minor_m1 = sp_minor[-1];
++    uint32_t sv_major_p1 = sp_major[+0];  // Clamp offset to zero.
++    uint32_t sv_minor_p1 = sp_minor[+0];  // Clamp offset to zero.
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_bmp__decoder__restart_frame(
+-    wuffs_bmp__decoder* self,
+-    uint64_t a_index,
+-    uint64_t a_io_position) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
++    uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
++                  (3u * ((uint32_t)(*sp_minor++)));
++    *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
++    *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
+   }
+ 
+-  if (self->private_impl.f_call_sequence < 32u) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
+-  }
+-  if (a_index != 0u) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  self->private_impl.f_call_sequence = 40u;
+-  self->private_impl.f_frame_config_io_position = a_io_position;
+-  return wuffs_base__make_status(NULL);
++  return dst_ptr;
+ }
++#endif
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
++// ‼ WUFFS MULTI-FILE SECTION -x86_avx2
+ 
+-// -------- func bmp.decoder.set_report_metadata
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_bmp__decoder__set_report_metadata(
+-    wuffs_bmp__decoder* self,
+-    uint32_t a_fourcc,
+-    bool a_report) {
+-  return wuffs_base__make_empty_struct();
+-}
++#endif  // !defined(WUFFS_CONFIG__MODULES) ||
++        // defined(WUFFS_CONFIG__MODULE__BASE) ||
++        // defined(WUFFS_CONFIG__MODULE__BASE__PIXCONV)
+ 
+-// -------- func bmp.decoder.tell_me_more
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
++    defined(WUFFS_CONFIG__MODULE__BASE__UTF8)
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_bmp__decoder__tell_me_more(
+-    wuffs_bmp__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__more_information* a_minfo,
+-    wuffs_base__io_buffer* a_src) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-  if (!a_dst || !a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 4)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+-  }
+-  self->private_impl.active_coroutine = 0;
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++// ---------------- Unicode and UTF-8
+ 
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++WUFFS_BASE__MAYBE_STATIC size_t  //
++wuffs_base__utf_8__encode(wuffs_base__slice_u8 dst, uint32_t code_point) {
++  if (code_point <= 0x7F) {
++    if (dst.len >= 1) {
++      dst.ptr[0] = (uint8_t)(code_point);
++      return 1;
++    }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_tell_me_more[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++  } else if (code_point <= 0x07FF) {
++    if (dst.len >= 2) {
++      dst.ptr[0] = (uint8_t)(0xC0 | ((code_point >> 6)));
++      dst.ptr[1] = (uint8_t)(0x80 | ((code_point >> 0) & 0x3F));
++      return 2;
++    }
+ 
+-    while (true) {
+-      {
+-        wuffs_base__status t_0 = wuffs_bmp__decoder__do_tell_me_more(self, a_dst, a_minfo, a_src);
+-        v_status = t_0;
+-      }
+-      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_bmp__error__truncated_input);
+-        goto exit;
+-      }
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++  } else if (code_point <= 0xFFFF) {
++    if ((dst.len >= 3) && ((code_point < 0xD800) || (0xDFFF < code_point))) {
++      dst.ptr[0] = (uint8_t)(0xE0 | ((code_point >> 12)));
++      dst.ptr[1] = (uint8_t)(0x80 | ((code_point >> 6) & 0x3F));
++      dst.ptr[2] = (uint8_t)(0x80 | ((code_point >> 0) & 0x3F));
++      return 3;
+     }
+ 
+-    ok:
+-    self->private_impl.p_tell_me_more[0] = 0;
+-    goto exit;
++  } else if (code_point <= 0x10FFFF) {
++    if (dst.len >= 4) {
++      dst.ptr[0] = (uint8_t)(0xF0 | ((code_point >> 18)));
++      dst.ptr[1] = (uint8_t)(0x80 | ((code_point >> 12) & 0x3F));
++      dst.ptr[2] = (uint8_t)(0x80 | ((code_point >> 6) & 0x3F));
++      dst.ptr[3] = (uint8_t)(0x80 | ((code_point >> 0) & 0x3F));
++      return 4;
++    }
+   }
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_tell_me_more[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 4 : 0;
+-
+-  goto exit;
+-  exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-  }
+-  return status;
++  return 0;
+ }
+ 
+-// -------- func bmp.decoder.do_tell_me_more
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bmp__decoder__do_tell_me_more(
+-    wuffs_bmp__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__more_information* a_minfo,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++// wuffs_base__utf_8__byte_length_minus_1 is the byte length (minus 1) of a
++// UTF-8 encoded code point, based on the encoding's initial byte.
++//  - 0x00 is 1-byte UTF-8 (ASCII).
++//  - 0x01 is the start of 2-byte UTF-8.
++//  - 0x02 is the start of 3-byte UTF-8.
++//  - 0x03 is the start of 4-byte UTF-8.
++//  - 0x40 is a UTF-8 tail byte.
++//  - 0x80 is invalid UTF-8.
++//
++// RFC 3629 (UTF-8) gives this grammar for valid UTF-8:
++//    UTF8-1      = %x00-7F
++//    UTF8-2      = %xC2-DF UTF8-tail
++//    UTF8-3      = %xE0 %xA0-BF UTF8-tail / %xE1-EC 2( UTF8-tail ) /
++//                  %xED %x80-9F UTF8-tail / %xEE-EF 2( UTF8-tail )
++//    UTF8-4      = %xF0 %x90-BF 2( UTF8-tail ) / %xF1-F3 3( UTF8-tail ) /
++//                  %xF4 %x80-8F 2( UTF8-tail )
++//    UTF8-tail   = %x80-BF
++static const uint8_t wuffs_base__utf_8__byte_length_minus_1[256] = {
++    // 0     1     2     3     4     5     6     7
++    // 8     9     A     B     C     D     E     F
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x00 ..= 0x07.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x08 ..= 0x0F.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x10 ..= 0x17.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x18 ..= 0x1F.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x20 ..= 0x27.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x28 ..= 0x2F.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x30 ..= 0x37.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x38 ..= 0x3F.
+ 
+-  if (self->private_impl.f_io_redirect_fourcc <= 1u) {
+-    status = wuffs_base__make_status(wuffs_base__error__no_more_information);
+-    goto exit;
+-  }
+-  if (a_minfo != NULL) {
+-    wuffs_base__more_information__set(a_minfo,
+-        1u,
+-        self->private_impl.f_io_redirect_fourcc,
+-        0u,
+-        self->private_impl.f_io_redirect_pos,
+-        18446744073709551615u);
+-  }
+-  self->private_impl.f_io_redirect_fourcc = 1u;
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x40 ..= 0x47.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x48 ..= 0x4F.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x50 ..= 0x57.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x58 ..= 0x5F.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x60 ..= 0x67.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x68 ..= 0x6F.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x70 ..= 0x77.
++    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x78 ..= 0x7F.
+ 
+-  goto ok;
+-  ok:
+-  goto exit;
+-  exit:
+-  return status;
+-}
++    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0x80 ..= 0x87.
++    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0x88 ..= 0x8F.
++    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0x90 ..= 0x97.
++    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0x98 ..= 0x9F.
++    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0xA0 ..= 0xA7.
++    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0xA8 ..= 0xAF.
++    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0xB0 ..= 0xB7.
++    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0xB8 ..= 0xBF.
+ 
+-// -------- func bmp.decoder.history_retain_length
++    0x80, 0x80, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,  // 0xC0 ..= 0xC7.
++    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,  // 0xC8 ..= 0xCF.
++    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,  // 0xD0 ..= 0xD7.
++    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,  // 0xD8 ..= 0xDF.
++    0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,  // 0xE0 ..= 0xE7.
++    0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,  // 0xE8 ..= 0xEF.
++    0x03, 0x03, 0x03, 0x03, 0x03, 0x80, 0x80, 0x80,  // 0xF0 ..= 0xF7.
++    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xF8 ..= 0xFF.
++    // 0     1     2     3     4     5     6     7
++    // 8     9     A     B     C     D     E     F
++};
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_bmp__decoder__history_retain_length(
+-    const wuffs_bmp__decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
++WUFFS_BASE__MAYBE_STATIC wuffs_base__utf_8__next__output  //
++wuffs_base__utf_8__next(const uint8_t* s_ptr, size_t s_len) {
++  if (s_len == 0) {
++    return wuffs_base__make_utf_8__next__output(0, 0);
+   }
++  uint32_t c = s_ptr[0];
++  switch (wuffs_base__utf_8__byte_length_minus_1[c & 0xFF]) {
++    case 0:
++      return wuffs_base__make_utf_8__next__output(c, 1);
+ 
+-  return 0u;
+-}
++    case 1:
++      if (s_len < 2) {
++        break;
++      }
++      c = wuffs_base__peek_u16le__no_bounds_check(s_ptr);
++      if ((c & 0xC000) != 0x8000) {
++        break;
++      }
++      c = (0x0007C0 & (c << 6)) | (0x00003F & (c >> 8));
++      return wuffs_base__make_utf_8__next__output(c, 2);
+ 
+-// -------- func bmp.decoder.workbuf_len
++    case 2:
++      if (s_len < 3) {
++        break;
++      }
++      c = wuffs_base__peek_u24le__no_bounds_check(s_ptr);
++      if ((c & 0xC0C000) != 0x808000) {
++        break;
++      }
++      c = (0x00F000 & (c << 12)) | (0x000FC0 & (c >> 2)) |
++          (0x00003F & (c >> 16));
++      if ((c <= 0x07FF) || ((0xD800 <= c) && (c <= 0xDFFF))) {
++        break;
++      }
++      return wuffs_base__make_utf_8__next__output(c, 3);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_bmp__decoder__workbuf_len(
+-    const wuffs_bmp__decoder* self) {
+-  if (!self) {
+-    return wuffs_base__utility__empty_range_ii_u64();
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_range_ii_u64();
++    case 3:
++      if (s_len < 4) {
++        break;
++      }
++      c = wuffs_base__peek_u32le__no_bounds_check(s_ptr);
++      if ((c & 0xC0C0C000) != 0x80808000) {
++        break;
++      }
++      c = (0x1C0000 & (c << 18)) | (0x03F000 & (c << 4)) |
++          (0x000FC0 & (c >> 10)) | (0x00003F & (c >> 24));
++      if ((c <= 0xFFFF) || (0x110000 <= c)) {
++        break;
++      }
++      return wuffs_base__make_utf_8__next__output(c, 4);
+   }
+ 
+-  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
++  return wuffs_base__make_utf_8__next__output(
++      WUFFS_BASE__UNICODE_REPLACEMENT_CHARACTER, 1);
+ }
+ 
+-// -------- func bmp.decoder.read_palette
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bmp__decoder__read_palette(
+-    wuffs_bmp__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  uint32_t v_i = 0;
+-  uint32_t v_argb = 0;
+-
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
+-
+-  uint32_t coro_susp_point = self->private_impl.p_read_palette[0];
+-  if (coro_susp_point) {
+-    v_i = self->private_data.s_read_palette[0].v_i;
++WUFFS_BASE__MAYBE_STATIC wuffs_base__utf_8__next__output  //
++wuffs_base__utf_8__next_from_end(const uint8_t* s_ptr, size_t s_len) {
++  if (s_len == 0) {
++    return wuffs_base__make_utf_8__next__output(0, 0);
+   }
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++  const uint8_t* ptr = &s_ptr[s_len - 1];
++  if (*ptr < 0x80) {
++    return wuffs_base__make_utf_8__next__output(*ptr, 1);
+ 
+-    if (self->private_impl.f_bitmap_info_len == 12u) {
+-      while ((v_i < 256u) && (self->private_impl.f_padding >= 3u)) {
+-        self->private_impl.f_padding -= 3u;
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-          uint32_t t_0;
+-          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
+-            t_0 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
+-            iop_a_src += 3;
+-          } else {
+-            self->private_data.s_read_palette[0].scratch = 0;
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-            while (true) {
+-              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                goto suspend;
+-              }
+-              uint64_t* scratch = &self->private_data.s_read_palette[0].scratch;
+-              uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
+-              *scratch <<= 8;
+-              *scratch >>= 8;
+-              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
+-              if (num_bits_0 == 16) {
+-                t_0 = ((uint32_t)(*scratch));
+-                break;
+-              }
+-              num_bits_0 += 8u;
+-              *scratch |= ((uint64_t)(num_bits_0)) << 56;
+-            }
+-          }
+-          v_argb = t_0;
+-        }
+-        v_argb |= 4278190080u;
+-        self->private_data.f_src_palette[((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u)));
+-        self->private_data.f_src_palette[((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u)));
+-        self->private_data.f_src_palette[((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u)));
+-        self->private_data.f_src_palette[((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u)));
+-        v_i += 1u;
++  } else if (*ptr < 0xC0) {
++    const uint8_t* too_far = &s_ptr[(s_len > 4) ? (s_len - 4) : 0];
++    uint32_t n = 1;
++    while (ptr != too_far) {
++      ptr--;
++      n++;
++      if (*ptr < 0x80) {
++        break;
++      } else if (*ptr < 0xC0) {
++        continue;
+       }
+-    } else {
+-      while ((v_i < 256u) && (self->private_impl.f_padding >= 4u)) {
+-        self->private_impl.f_padding -= 4u;
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-          uint32_t t_1;
+-          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-            t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-            iop_a_src += 4;
+-          } else {
+-            self->private_data.s_read_palette[0].scratch = 0;
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-            while (true) {
+-              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                goto suspend;
+-              }
+-              uint64_t* scratch = &self->private_data.s_read_palette[0].scratch;
+-              uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
+-              *scratch <<= 8;
+-              *scratch >>= 8;
+-              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
+-              if (num_bits_1 == 24) {
+-                t_1 = ((uint32_t)(*scratch));
+-                break;
+-              }
+-              num_bits_1 += 8u;
+-              *scratch |= ((uint64_t)(num_bits_1)) << 56;
+-            }
+-          }
+-          v_argb = t_1;
+-        }
+-        v_argb |= 4278190080u;
+-        self->private_data.f_src_palette[((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u)));
+-        self->private_data.f_src_palette[((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u)));
+-        self->private_data.f_src_palette[((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u)));
+-        self->private_data.f_src_palette[((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u)));
+-        v_i += 1u;
++      wuffs_base__utf_8__next__output o = wuffs_base__utf_8__next(ptr, n);
++      if (o.byte_length != n) {
++        break;
+       }
++      return o;
+     }
+-    while (v_i < 256u) {
+-      self->private_data.f_src_palette[((4u * v_i) + 0u)] = 0u;
+-      self->private_data.f_src_palette[((4u * v_i) + 1u)] = 0u;
+-      self->private_data.f_src_palette[((4u * v_i) + 2u)] = 0u;
+-      self->private_data.f_src_palette[((4u * v_i) + 3u)] = 255u;
+-      v_i += 1u;
+-    }
+-
+-    goto ok;
+-    ok:
+-    self->private_impl.p_read_palette[0] = 0;
+-    goto exit;
+-  }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_read_palette[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_read_palette[0].v_i = v_i;
+-
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+ 
+-  return status;
++  return wuffs_base__make_utf_8__next__output(
++      WUFFS_BASE__UNICODE_REPLACEMENT_CHARACTER, 1);
+ }
+ 
+-// -------- func bmp.decoder.process_masks
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bmp__decoder__process_masks(
+-    wuffs_bmp__decoder* self) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  uint32_t v_i = 0;
+-  uint32_t v_mask = 0;
+-  uint32_t v_n = 0;
+-
+-  while (v_i < 4u) {
+-    v_mask = self->private_impl.f_channel_masks[v_i];
+-    if (v_mask != 0u) {
+-      v_n = 0u;
+-      while ((v_mask & 1u) == 0u) {
+-        v_n += 1u;
+-        v_mask >>= 1u;
+-      }
+-      self->private_impl.f_channel_shifts[v_i] = ((uint8_t)((v_n & 31u)));
+-      v_n = 0u;
+-      while ((v_mask & 1u) == 1u) {
+-        v_n += 1u;
+-        v_mask >>= 1u;
+-      }
+-      if ((v_mask != 0u) || (v_n > 32u)) {
+-        status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
+-        goto exit;
+-      }
+-      self->private_impl.f_channel_num_bits[v_i] = ((uint8_t)(v_n));
+-    } else if (v_i != 3u) {
+-      status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
+-      goto exit;
++WUFFS_BASE__MAYBE_STATIC size_t  //
++wuffs_base__utf_8__longest_valid_prefix(const uint8_t* s_ptr, size_t s_len) {
++  // TODO: possibly optimize the all-ASCII case (4 or 8 bytes at a time).
++  //
++  // TODO: possibly optimize this by manually inlining the
++  // wuffs_base__utf_8__next calls.
++  size_t original_len = s_len;
++  while (s_len > 0) {
++    wuffs_base__utf_8__next__output o = wuffs_base__utf_8__next(s_ptr, s_len);
++    if ((o.code_point > 0x7F) && (o.byte_length == 1)) {
++      break;
+     }
+-    v_i += 1u;
++    s_ptr += o.byte_length;
++    s_len -= o.byte_length;
+   }
++  return original_len - s_len;
++}
+ 
+-  goto ok;
+-  ok:
+-  goto exit;
+-  exit:
+-  return status;
++WUFFS_BASE__MAYBE_STATIC size_t  //
++wuffs_base__ascii__longest_valid_prefix(const uint8_t* s_ptr, size_t s_len) {
++  // TODO: possibly optimize this by checking 4 or 8 bytes at a time.
++  const uint8_t* original_ptr = s_ptr;
++  const uint8_t* p = s_ptr;
++  const uint8_t* q = s_ptr + s_len;
++  for (; (p != q) && ((*p & 0x80) == 0); p++) {
++  }
++  return (size_t)(p - original_ptr);
+ }
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BMP)
++#endif  // !defined(WUFFS_CONFIG__MODULES) ||
++        // defined(WUFFS_CONFIG__MODULE__BASE) ||
++        // defined(WUFFS_CONFIG__MODULE__BASE__UTF8)
+ 
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BZIP2)
++#ifdef __cplusplus
++}  // extern "C"
++#endif
+ 
+-// ---------------- Status Codes Implementations
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ADLER32)
+ 
+-const char wuffs_bzip2__error__bad_huffman_code_over_subscribed[] = "#bzip2: bad Huffman code (over-subscribed)";
+-const char wuffs_bzip2__error__bad_huffman_code_under_subscribed[] = "#bzip2: bad Huffman code (under-subscribed)";
+-const char wuffs_bzip2__error__bad_block_header[] = "#bzip2: bad block header";
+-const char wuffs_bzip2__error__bad_block_length[] = "#bzip2: bad block length";
+-const char wuffs_bzip2__error__bad_checksum[] = "#bzip2: bad checksum";
+-const char wuffs_bzip2__error__bad_header[] = "#bzip2: bad header";
+-const char wuffs_bzip2__error__bad_number_of_sections[] = "#bzip2: bad number of sections";
+-const char wuffs_bzip2__error__truncated_input[] = "#bzip2: truncated input";
+-const char wuffs_bzip2__error__unsupported_block_randomization[] = "#bzip2: unsupported block randomization";
+-const char wuffs_bzip2__error__internal_error_inconsistent_huffman_decoder_state[] = "#bzip2: internal error: inconsistent Huffman decoder state";
++// ---------------- Status Codes Implementations
+ 
+ // ---------------- Private Consts
+ 
+-static const uint8_t
+-WUFFS_BZIP2__CLAMP_TO_5[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  0, 1, 2, 3, 4, 5, 5, 5,
+-};
+-
+-static const uint32_t
+-WUFFS_BZIP2__REV_CRC32_TABLE[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  0, 79764919, 159529838, 222504665, 319059676, 398814059, 445009330, 507990021,
+-  638119352, 583659535, 797628118, 726387553, 890018660, 835552979, 1015980042, 944750013,
+-  1276238704, 1221641927, 1167319070, 1095957929, 1595256236, 1540665371, 1452775106, 1381403509,
+-  1780037320, 1859660671, 1671105958, 1733955601, 2031960084, 2111593891, 1889500026, 1952343757,
+-  2552477408, 2632100695, 2443283854, 2506133561, 2334638140, 2414271883, 2191915858, 2254759653,
+-  3190512472, 3135915759, 3081330742, 3009969537, 2905550212, 2850959411, 2762807018, 2691435357,
+-  3560074640, 3505614887, 3719321342, 3648080713, 3342211916, 3287746299, 3467911202, 3396681109,
+-  4063920168, 4143685023, 4223187782, 4286162673, 3779000052, 3858754371, 3904687514, 3967668269,
+-  881225847, 809987520, 1023691545, 969234094, 662832811, 591600412, 771767749, 717299826,
+-  311336399, 374308984, 453813921, 533576470, 25881363, 88864420, 134795389, 214552010,
+-  2023205639, 2086057648, 1897238633, 1976864222, 1804852699, 1867694188, 1645340341, 1724971778,
+-  1587496639, 1516133128, 1461550545, 1406951526, 1302016099, 1230646740, 1142491917, 1087903418,
+-  2896545431, 2825181984, 2770861561, 2716262478, 3215044683, 3143675388, 3055782693, 3001194130,
+-  2326604591, 2389456536, 2200899649, 2280525302, 2578013683, 2640855108, 2418763421, 2498394922,
+-  3769900519, 3832873040, 3912640137, 3992402750, 4088425275, 4151408268, 4197601365, 4277358050,
+-  3334271071, 3263032808, 3476998961, 3422541446, 3585640067, 3514407732, 3694837229, 3640369242,
+-  1762451694, 1842216281, 1619975040, 1682949687, 2047383090, 2127137669, 1938468188, 2001449195,
+-  1325665622, 1271206113, 1183200824, 1111960463, 1543535498, 1489069629, 1434599652, 1363369299,
+-  622672798, 568075817, 748617968, 677256519, 907627842, 853037301, 1067152940, 995781531,
+-  51762726, 131386257, 177728840, 240578815, 269590778, 349224269, 429104020, 491947555,
+-  4046411278, 4126034873, 4172115296, 4234965207, 3794477266, 3874110821, 3953728444, 4016571915,
+-  3609705398, 3555108353, 3735388376, 3664026991, 3290680682, 3236090077, 3449943556, 3378572211,
+-  3174993278, 3120533705, 3032266256, 2961025959, 2923101090, 2868635157, 2813903052, 2742672763,
+-  2604032198, 2683796849, 2461293480, 2524268063, 2284983834, 2364738477, 2175806836, 2238787779,
+-  1569362073, 1498123566, 1409854455, 1355396672, 1317987909, 1246755826, 1192025387, 1137557660,
+-  2072149281, 2135122070, 1912620623, 1992383480, 1753615357, 1816598090, 1627664531, 1707420964,
+-  295390185, 358241886, 404320391, 483945776, 43990325, 106832002, 186451547, 266083308,
+-  932423249, 861060070, 1041341759, 986742920, 613929101, 542559546, 756411363, 701822548,
+-  3316196985, 3244833742, 3425377559, 3370778784, 3601682597, 3530312978, 3744426955, 3689838204,
+-  3819031489, 3881883254, 3928223919, 4007849240, 4037393693, 4100235434, 4180117107, 4259748804,
+-  2310601993, 2373574846, 2151335527, 2231098320, 2596047829, 2659030626, 2470359227, 2550115596,
+-  2947551409, 2876312838, 2788305887, 2733848168, 3165939309, 3094707162, 3040238851, 2985771188,
+-};
+-
+ // ---------------- Private Initializer Prototypes
+ 
+ // ---------------- Private Function Prototypes
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bzip2__decoder__do_transform_io(
+-    wuffs_bzip2__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__slice_u8 a_workbuf);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bzip2__decoder__prepare_block(
+-    wuffs_bzip2__decoder* self,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bzip2__decoder__read_code_lengths(
+-    wuffs_bzip2__decoder* self,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bzip2__decoder__build_huffman_tree(
+-    wuffs_bzip2__decoder* self,
+-    uint32_t a_which);
+-
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__empty_struct
+-wuffs_bzip2__decoder__build_huffman_table(
+-    wuffs_bzip2__decoder* self,
+-    uint32_t a_which);
++wuffs_adler32__hasher__up(
++    wuffs_adler32__hasher* self,
++    wuffs_base__slice_u8 a_x);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__empty_struct
+-wuffs_bzip2__decoder__invert_bwt(
+-    wuffs_bzip2__decoder* self);
++wuffs_adler32__hasher__up__choosy_default(
++    wuffs_adler32__hasher* self,
++    wuffs_base__slice_u8 a_x);
+ 
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__empty_struct
+-wuffs_bzip2__decoder__flush_fast(
+-    wuffs_bzip2__decoder* self,
+-    wuffs_base__io_buffer* a_dst);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bzip2__decoder__flush_slow(
+-    wuffs_bzip2__decoder* self,
+-    wuffs_base__io_buffer* a_dst);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bzip2__decoder__decode_huffman_fast(
+-    wuffs_bzip2__decoder* self,
+-    wuffs_base__io_buffer* a_src);
++wuffs_adler32__hasher__up_arm_neon(
++    wuffs_adler32__hasher* self,
++    wuffs_base__slice_u8 a_x);
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
+ 
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bzip2__decoder__decode_huffman_slow(
+-    wuffs_bzip2__decoder* self,
+-    wuffs_base__io_buffer* a_src);
++static wuffs_base__empty_struct
++wuffs_adler32__hasher__up_x86_sse42(
++    wuffs_adler32__hasher* self,
++    wuffs_base__slice_u8 a_x);
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
+ 
+ // ---------------- VTables
+ 
+-const wuffs_base__io_transformer__func_ptrs
+-wuffs_bzip2__decoder__func_ptrs_for__wuffs_base__io_transformer = {
++const wuffs_base__hasher_u32__func_ptrs
++wuffs_adler32__hasher__func_ptrs_for__wuffs_base__hasher_u32 = {
++  (uint32_t(*)(const void*))(&wuffs_adler32__hasher__checksum_u32),
+   (uint64_t(*)(const void*,
+-      uint32_t))(&wuffs_bzip2__decoder__get_quirk),
+-  (uint64_t(*)(const void*))(&wuffs_bzip2__decoder__history_retain_length),
++      uint32_t))(&wuffs_adler32__hasher__get_quirk),
+   (wuffs_base__status(*)(void*,
+       uint32_t,
+-      uint64_t))(&wuffs_bzip2__decoder__set_quirk),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__slice_u8))(&wuffs_bzip2__decoder__transform_io),
+-  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_bzip2__decoder__workbuf_len),
++      uint64_t))(&wuffs_adler32__hasher__set_quirk),
++  (wuffs_base__empty_struct(*)(void*,
++      wuffs_base__slice_u8))(&wuffs_adler32__hasher__update),
++  (uint32_t(*)(void*,
++      wuffs_base__slice_u8))(&wuffs_adler32__hasher__update_u32),
+ };
+ 
+ // ---------------- Initializer Implementations
+ 
+ wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_bzip2__decoder__initialize(
+-    wuffs_bzip2__decoder* self,
++wuffs_adler32__hasher__initialize(
++    wuffs_adler32__hasher* self,
+     size_t sizeof_star_self,
+     uint64_t wuffs_version,
+     uint32_t options){
+@@ -30559,23 +30841,25 @@ wuffs_bzip2__decoder__initialize(
+     }
+   }
+ 
++  self->private_impl.choosy_up = &wuffs_adler32__hasher__up__choosy_default;
++
+   self->private_impl.magic = WUFFS_BASE__MAGIC;
+-  self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
+-      wuffs_base__io_transformer__vtable_name;
+-  self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
+-      (const void*)(&wuffs_bzip2__decoder__func_ptrs_for__wuffs_base__io_transformer);
++  self->private_impl.vtable_for__wuffs_base__hasher_u32.vtable_name =
++      wuffs_base__hasher_u32__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__hasher_u32.function_pointers =
++      (const void*)(&wuffs_adler32__hasher__func_ptrs_for__wuffs_base__hasher_u32);
+   return wuffs_base__make_status(NULL);
+ }
+ 
+-wuffs_bzip2__decoder*
+-wuffs_bzip2__decoder__alloc(void) {
+-  wuffs_bzip2__decoder* x =
+-      (wuffs_bzip2__decoder*)(calloc(sizeof(wuffs_bzip2__decoder), 1));
++wuffs_adler32__hasher*
++wuffs_adler32__hasher__alloc(void) {
++  wuffs_adler32__hasher* x =
++      (wuffs_adler32__hasher*)(calloc(1, sizeof(wuffs_adler32__hasher)));
+   if (!x) {
+     return NULL;
+   }
+-  if (wuffs_bzip2__decoder__initialize(
+-      x, sizeof(wuffs_bzip2__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++  if (wuffs_adler32__hasher__initialize(
++      x, sizeof(wuffs_adler32__hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
+     free(x);
+     return NULL;
+   }
+@@ -30583,18 +30867,18 @@ wuffs_bzip2__decoder__alloc(void) {
+ }
+ 
+ size_t
+-sizeof__wuffs_bzip2__decoder(void) {
+-  return sizeof(wuffs_bzip2__decoder);
++sizeof__wuffs_adler32__hasher(void) {
++  return sizeof(wuffs_adler32__hasher);
+ }
+ 
+ // ---------------- Function Implementations
+ 
+-// -------- func bzip2.decoder.get_quirk
++// -------- func adler32.hasher.get_quirk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_bzip2__decoder__get_quirk(
+-    const wuffs_bzip2__decoder* self,
++wuffs_adler32__hasher__get_quirk(
++    const wuffs_adler32__hasher* self,
+     uint32_t a_key) {
+   if (!self) {
+     return 0;
+@@ -30607,12 +30891,12 @@ wuffs_bzip2__decoder__get_quirk(
+   return 0u;
+ }
+ 
+-// -------- func bzip2.decoder.set_quirk
++// -------- func adler32.hasher.set_quirk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_bzip2__decoder__set_quirk(
+-    wuffs_bzip2__decoder* self,
++wuffs_adler32__hasher__set_quirk(
++    wuffs_adler32__hasher* self,
+     uint32_t a_key,
+     uint64_t a_value) {
+   if (!self) {
+@@ -30625,369 +30909,699 @@ wuffs_bzip2__decoder__set_quirk(
+         : wuffs_base__error__initialize_not_called);
+   }
+ 
+-  if (a_key == 1u) {
+-    self->private_impl.f_ignore_checksum = (a_value > 0u);
+-    return wuffs_base__make_status(NULL);
+-  }
+   return wuffs_base__make_status(wuffs_base__error__unsupported_option);
+ }
+ 
+-// -------- func bzip2.decoder.history_retain_length
++// -------- func adler32.hasher.update
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_bzip2__decoder__history_retain_length(
+-    const wuffs_bzip2__decoder* self) {
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_adler32__hasher__update(
++    wuffs_adler32__hasher* self,
++    wuffs_base__slice_u8 a_x) {
+   if (!self) {
+-    return 0;
++    return wuffs_base__make_empty_struct();
+   }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_empty_struct();
+   }
+ 
+-  return 0u;
++  if ( ! self->private_impl.f_started) {
++    self->private_impl.f_started = true;
++    self->private_impl.f_state = 1u;
++    self->private_impl.choosy_up = (
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
++        wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_adler32__hasher__up_arm_neon :
++#endif
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_adler32__hasher__up_x86_sse42 :
++#endif
++        self->private_impl.choosy_up);
++  }
++  wuffs_adler32__hasher__up(self, a_x);
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-// -------- func bzip2.decoder.workbuf_len
++// -------- func adler32.hasher.update_u32
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_bzip2__decoder__workbuf_len(
+-    const wuffs_bzip2__decoder* self) {
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_adler32__hasher__update_u32(
++    wuffs_adler32__hasher* self,
++    wuffs_base__slice_u8 a_x) {
+   if (!self) {
+-    return wuffs_base__utility__empty_range_ii_u64();
++    return 0;
+   }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_range_ii_u64();
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return 0;
+   }
+ 
+-  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
++  wuffs_adler32__hasher__update(self, a_x);
++  return self->private_impl.f_state;
+ }
+ 
+-// -------- func bzip2.decoder.transform_io
++// -------- func adler32.hasher.up
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_bzip2__decoder__transform_io(
+-    wuffs_bzip2__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__slice_u8 a_workbuf) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-  if (!a_dst || !a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 1)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+-  }
+-  self->private_impl.active_coroutine = 0;
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++static wuffs_base__empty_struct
++wuffs_adler32__hasher__up(
++    wuffs_adler32__hasher* self,
++    wuffs_base__slice_u8 a_x) {
++  return (*self->private_impl.choosy_up)(self, a_x);
++}
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_transform_io[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_adler32__hasher__up__choosy_default(
++    wuffs_adler32__hasher* self,
++    wuffs_base__slice_u8 a_x) {
++  uint32_t v_s1 = 0;
++  uint32_t v_s2 = 0;
++  wuffs_base__slice_u8 v_remaining = {0};
++  wuffs_base__slice_u8 v_p = {0};
+ 
+-    while (true) {
+-      {
+-        wuffs_base__status t_0 = wuffs_bzip2__decoder__do_transform_io(self, a_dst, a_src, a_workbuf);
+-        v_status = t_0;
++  v_s1 = ((self->private_impl.f_state) & 0xFFFFu);
++  v_s2 = ((self->private_impl.f_state) >> (32u - 16u));
++  while (((uint64_t)(a_x.len)) > 0u) {
++    v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0u);
++    if (((uint64_t)(a_x.len)) > 5552u) {
++      v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 5552u);
++      a_x = wuffs_base__slice_u8__subslice_j(a_x, 5552u);
++    }
++    {
++      wuffs_base__slice_u8 i_slice_p = a_x;
++      v_p.ptr = i_slice_p.ptr;
++      v_p.len = 1;
++      const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 8) * 8));
++      while (v_p.ptr < i_end0_p) {
++        v_s1 += ((uint32_t)(v_p.ptr[0u]));
++        v_s2 += v_s1;
++        v_p.ptr += 1;
++        v_s1 += ((uint32_t)(v_p.ptr[0u]));
++        v_s2 += v_s1;
++        v_p.ptr += 1;
++        v_s1 += ((uint32_t)(v_p.ptr[0u]));
++        v_s2 += v_s1;
++        v_p.ptr += 1;
++        v_s1 += ((uint32_t)(v_p.ptr[0u]));
++        v_s2 += v_s1;
++        v_p.ptr += 1;
++        v_s1 += ((uint32_t)(v_p.ptr[0u]));
++        v_s2 += v_s1;
++        v_p.ptr += 1;
++        v_s1 += ((uint32_t)(v_p.ptr[0u]));
++        v_s2 += v_s1;
++        v_p.ptr += 1;
++        v_s1 += ((uint32_t)(v_p.ptr[0u]));
++        v_s2 += v_s1;
++        v_p.ptr += 1;
++        v_s1 += ((uint32_t)(v_p.ptr[0u]));
++        v_s2 += v_s1;
++        v_p.ptr += 1;
+       }
+-      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_bzip2__error__truncated_input);
+-        goto exit;
++      v_p.len = 1;
++      const uint8_t* i_end1_p = wuffs_private_impl__ptr_u8_plus_len(i_slice_p.ptr, i_slice_p.len);
++      while (v_p.ptr < i_end1_p) {
++        v_s1 += ((uint32_t)(v_p.ptr[0u]));
++        v_s2 += v_s1;
++        v_p.ptr += 1;
+       }
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++      v_p.len = 0;
+     }
+-
+-    ok:
+-    self->private_impl.p_transform_io[0] = 0;
+-    goto exit;
++    v_s1 %= 65521u;
++    v_s2 %= 65521u;
++    a_x = v_remaining;
+   }
++  self->private_impl.f_state = (((v_s2 & 65535u) << 16u) | (v_s1 & 65535u));
++  return wuffs_base__make_empty_struct();
++}
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
++// -------- func adler32.hasher.checksum_u32
+ 
+-  goto exit;
+-  exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_adler32__hasher__checksum_u32(
++    const wuffs_adler32__hasher* self) {
++  if (!self) {
++    return 0;
+   }
+-  return status;
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  return self->private_impl.f_state;
+ }
+ 
+-// -------- func bzip2.decoder.do_transform_io
++// ‼ WUFFS MULTI-FILE SECTION +arm_neon
++// -------- func adler32.hasher.up_arm_neon
+ 
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bzip2__decoder__do_transform_io(
+-    wuffs_bzip2__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__slice_u8 a_workbuf) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  uint8_t v_c = 0;
+-  uint32_t v_i = 0;
+-  uint64_t v_tag = 0;
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-  uint32_t v_final_checksum_want = 0;
+-
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
++static wuffs_base__empty_struct
++wuffs_adler32__hasher__up_arm_neon(
++    wuffs_adler32__hasher* self,
++    wuffs_base__slice_u8 a_x) {
++  uint32_t v_s1 = 0;
++  uint32_t v_s2 = 0;
++  wuffs_base__slice_u8 v_remaining = {0};
++  wuffs_base__slice_u8 v_p = {0};
++  uint8x16_t v_p__left = {0};
++  uint8x16_t v_p_right = {0};
++  uint32x4_t v_v1 = {0};
++  uint32x4_t v_v2 = {0};
++  uint16x8_t v_col0 = {0};
++  uint16x8_t v_col1 = {0};
++  uint16x8_t v_col2 = {0};
++  uint16x8_t v_col3 = {0};
++  uint32x2_t v_sum1 = {0};
++  uint32x2_t v_sum2 = {0};
++  uint32x2_t v_sum12 = {0};
++  uint32_t v_num_iterate_bytes = 0;
++  uint64_t v_tail_index = 0;
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_transform_io[0];
+-  if (coro_susp_point) {
+-    v_i = self->private_data.s_do_transform_io[0].v_i;
+-    v_tag = self->private_data.s_do_transform_io[0].v_tag;
+-    v_final_checksum_want = self->private_data.s_do_transform_io[0].v_final_checksum_want;
++  v_s1 = ((self->private_impl.f_state) & 0xFFFFu);
++  v_s2 = ((self->private_impl.f_state) >> (32u - 16u));
++  while ((((uint64_t)(a_x.len)) > 0u) && ((15u & ((uint32_t)(0xFFFu & (uintptr_t)(a_x.ptr)))) != 0u)) {
++    v_s1 += ((uint32_t)(a_x.ptr[0u]));
++    v_s2 += v_s1;
++    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
+   }
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_0 = *iop_a_src++;
+-      v_c = t_0;
+-    }
+-    if (v_c != 66u) {
+-      status = wuffs_base__make_status(wuffs_bzip2__error__bad_header);
+-      goto exit;
++  v_s1 %= 65521u;
++  v_s2 %= 65521u;
++  while (((uint64_t)(a_x.len)) > 0u) {
++    v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0u);
++    if (((uint64_t)(a_x.len)) > 5536u) {
++      v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 5536u);
++      a_x = wuffs_base__slice_u8__subslice_j(a_x, 5536u);
+     }
++    v_num_iterate_bytes = ((uint32_t)((((uint64_t)(a_x.len)) & 4294967264u)));
++    v_s2 += ((uint32_t)(v_s1 * v_num_iterate_bytes));
++    v_v1 = vdupq_n_u32(0u);
++    v_v2 = vdupq_n_u32(0u);
++    v_col0 = vdupq_n_u16(0u);
++    v_col1 = vdupq_n_u16(0u);
++    v_col2 = vdupq_n_u16(0u);
++    v_col3 = vdupq_n_u16(0u);
+     {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
++      wuffs_base__slice_u8 i_slice_p = a_x;
++      v_p.ptr = i_slice_p.ptr;
++      v_p.len = 32;
++      const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32));
++      while (v_p.ptr < i_end0_p) {
++        v_p__left = vld1q_u8(v_p.ptr);
++        v_p_right = vld1q_u8(v_p.ptr + 16u);
++        v_v2 = vaddq_u32(v_v2, v_v1);
++        v_v1 = vpadalq_u16(v_v1, vpadalq_u8(vpaddlq_u8(v_p__left), v_p_right));
++        v_col0 = vaddw_u8(v_col0, vget_low_u8(v_p__left));
++        v_col1 = vaddw_u8(v_col1, vget_high_u8(v_p__left));
++        v_col2 = vaddw_u8(v_col2, vget_low_u8(v_p_right));
++        v_col3 = vaddw_u8(v_col3, vget_high_u8(v_p_right));
++        v_p.ptr += 32;
+       }
+-      uint8_t t_1 = *iop_a_src++;
+-      v_c = t_1;
+-    }
+-    if (v_c != 90u) {
+-      status = wuffs_base__make_status(wuffs_bzip2__error__bad_header);
+-      goto exit;
++      v_p.len = 0;
+     }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
++    v_v2 = vshlq_n_u32(v_v2, 5u);
++    v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col0), ((uint16x4_t){32u, 31u, 30u, 29u}));
++    v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col0), ((uint16x4_t){28u, 27u, 26u, 25u}));
++    v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col1), ((uint16x4_t){24u, 23u, 22u, 21u}));
++    v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col1), ((uint16x4_t){20u, 19u, 18u, 17u}));
++    v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col2), ((uint16x4_t){16u, 15u, 14u, 13u}));
++    v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col2), ((uint16x4_t){12u, 11u, 10u, 9u}));
++    v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col3), ((uint16x4_t){8u, 7u, 6u, 5u}));
++    v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col3), ((uint16x4_t){4u, 3u, 2u, 1u}));
++    v_sum1 = vpadd_u32(vget_low_u32(v_v1), vget_high_u32(v_v1));
++    v_sum2 = vpadd_u32(vget_low_u32(v_v2), vget_high_u32(v_v2));
++    v_sum12 = vpadd_u32(v_sum1, v_sum2);
++    v_s1 += vget_lane_u32(v_sum12, 0u);
++    v_s2 += vget_lane_u32(v_sum12, 1u);
++    v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551584u);
++    if (v_tail_index < ((uint64_t)(a_x.len))) {
++      {
++        wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index);
++        v_p.ptr = i_slice_p.ptr;
++        v_p.len = 1;
++        const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(i_slice_p.ptr, i_slice_p.len);
++        while (v_p.ptr < i_end0_p) {
++          v_s1 += ((uint32_t)(v_p.ptr[0u]));
++          v_s2 += v_s1;
++          v_p.ptr += 1;
++        }
++        v_p.len = 0;
+       }
+-      uint8_t t_2 = *iop_a_src++;
+-      v_c = t_2;
+     }
+-    if (v_c != 104u) {
+-      status = wuffs_base__make_status(wuffs_bzip2__error__bad_header);
+-      goto exit;
++    v_s1 %= 65521u;
++    v_s2 %= 65521u;
++    a_x = v_remaining;
++  }
++  self->private_impl.f_state = (((v_s2 & 65535u) << 16u) | (v_s1 & 65535u));
++  return wuffs_base__make_empty_struct();
++}
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
++// ‼ WUFFS MULTI-FILE SECTION -arm_neon
++
++// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
++// -------- func adler32.hasher.up_x86_sse42
++
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_adler32__hasher__up_x86_sse42(
++    wuffs_adler32__hasher* self,
++    wuffs_base__slice_u8 a_x) {
++  uint32_t v_s1 = 0;
++  uint32_t v_s2 = 0;
++  wuffs_base__slice_u8 v_remaining = {0};
++  wuffs_base__slice_u8 v_p = {0};
++  __m128i v_zeroes = {0};
++  __m128i v_ones = {0};
++  __m128i v_weights__left = {0};
++  __m128i v_weights_right = {0};
++  __m128i v_q__left = {0};
++  __m128i v_q_right = {0};
++  __m128i v_v1 = {0};
++  __m128i v_v2 = {0};
++  __m128i v_v2j = {0};
++  __m128i v_v2k = {0};
++  uint32_t v_num_iterate_bytes = 0;
++  uint64_t v_tail_index = 0;
++
++  v_zeroes = _mm_set1_epi16((int16_t)(0u));
++  v_ones = _mm_set1_epi16((int16_t)(1u));
++  v_weights__left = _mm_set_epi8((int8_t)(17u), (int8_t)(18u), (int8_t)(19u), (int8_t)(20u), (int8_t)(21u), (int8_t)(22u), (int8_t)(23u), (int8_t)(24u), (int8_t)(25u), (int8_t)(26u), (int8_t)(27u), (int8_t)(28u), (int8_t)(29u), (int8_t)(30u), (int8_t)(31u), (int8_t)(32u));
++  v_weights_right = _mm_set_epi8((int8_t)(1u), (int8_t)(2u), (int8_t)(3u), (int8_t)(4u), (int8_t)(5u), (int8_t)(6u), (int8_t)(7u), (int8_t)(8u), (int8_t)(9u), (int8_t)(10u), (int8_t)(11u), (int8_t)(12u), (int8_t)(13u), (int8_t)(14u), (int8_t)(15u), (int8_t)(16u));
++  v_s1 = ((self->private_impl.f_state) & 0xFFFFu);
++  v_s2 = ((self->private_impl.f_state) >> (32u - 16u));
++  while (((uint64_t)(a_x.len)) > 0u) {
++    v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0u);
++    if (((uint64_t)(a_x.len)) > 5536u) {
++      v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 5536u);
++      a_x = wuffs_base__slice_u8__subslice_j(a_x, 5536u);
+     }
++    v_num_iterate_bytes = ((uint32_t)((((uint64_t)(a_x.len)) & 4294967264u)));
++    v_s2 += ((uint32_t)(v_s1 * v_num_iterate_bytes));
++    v_v1 = _mm_setzero_si128();
++    v_v2j = _mm_setzero_si128();
++    v_v2k = _mm_setzero_si128();
+     {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_3 = *iop_a_src++;
+-      v_c = t_3;
+-    }
+-    if ((v_c < 49u) || (57u < v_c)) {
+-      status = wuffs_base__make_status(wuffs_bzip2__error__bad_header);
+-      goto exit;
+-    }
+-    self->private_impl.f_max_incl_block_size = (((uint32_t)((v_c - 48u))) * 100000u);
+-    while (true) {
+-      v_tag = 0u;
+-      v_i = 0u;
+-      while (v_i < 48u) {
+-        if (self->private_impl.f_n_bits <= 0u) {
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint8_t t_4 = *iop_a_src++;
+-            v_c = t_4;
+-          }
+-          self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
+-          self->private_impl.f_n_bits = 8u;
+-        }
+-        v_tag <<= 1u;
+-        v_tag |= ((uint64_t)((self->private_impl.f_bits >> 31u)));
+-        self->private_impl.f_bits <<= 1u;
+-        self->private_impl.f_n_bits -= 1u;
+-        v_i += 1u;
+-      }
+-      if (v_tag == 25779555029136u) {
+-        break;
+-      } else if (v_tag != 54156738319193u) {
+-        status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
+-        goto exit;
+-      }
+-      if (a_src) {
+-        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-      }
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-      status = wuffs_bzip2__decoder__prepare_block(self, a_src);
+-      if (a_src) {
+-        iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-      }
+-      if (status.repr) {
+-        goto suspend;
+-      }
+-      self->private_impl.f_block_size = 0u;
+-      self->private_impl.f_decode_huffman_finished = false;
+-      self->private_impl.f_decode_huffman_which = WUFFS_BZIP2__CLAMP_TO_5[(self->private_data.f_huffman_selectors[0u] & 7u)];
+-      self->private_impl.f_decode_huffman_ticks = 50u;
+-      self->private_impl.f_decode_huffman_section = 0u;
+-      self->private_impl.f_decode_huffman_run_shift = 0u;
+-      while ( ! self->private_impl.f_decode_huffman_finished) {
+-        if (a_src) {
+-          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-        }
+-        v_status = wuffs_bzip2__decoder__decode_huffman_fast(self, a_src);
+-        if (a_src) {
+-          iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-        }
+-        if (wuffs_base__status__is_error(&v_status)) {
+-          status = v_status;
+-          goto exit;
+-        } else if (self->private_impl.f_decode_huffman_finished) {
+-          break;
+-        }
+-        if (a_src) {
+-          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-        }
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+-        status = wuffs_bzip2__decoder__decode_huffman_slow(self, a_src);
+-        if (a_src) {
+-          iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-        }
+-        if (status.repr) {
+-          goto suspend;
+-        }
+-      }
+-      wuffs_bzip2__decoder__invert_bwt(self);
+-      self->private_impl.f_block_checksum_have = 4294967295u;
+-      if (self->private_impl.f_original_pointer >= self->private_impl.f_block_size) {
+-        status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
+-        goto exit;
+-      }
+-      self->private_impl.f_flush_pointer = (self->private_data.f_bwt[self->private_impl.f_original_pointer] >> 12u);
+-      self->private_impl.f_flush_repeat_count = 0u;
+-      self->private_impl.f_flush_prev = 0u;
+-      while (self->private_impl.f_block_size > 0u) {
+-        wuffs_bzip2__decoder__flush_fast(self, a_dst);
+-        if (self->private_impl.f_block_size <= 0u) {
+-          break;
+-        }
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
+-        status = wuffs_bzip2__decoder__flush_slow(self, a_dst);
+-        if (status.repr) {
+-          goto suspend;
+-        }
+-      }
+-      self->private_impl.f_block_checksum_have ^= 4294967295u;
+-      if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_block_checksum_have != self->private_impl.f_block_checksum_want)) {
+-        status = wuffs_base__make_status(wuffs_bzip2__error__bad_checksum);
+-        goto exit;
++      wuffs_base__slice_u8 i_slice_p = a_x;
++      v_p.ptr = i_slice_p.ptr;
++      v_p.len = 32;
++      const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32));
++      while (v_p.ptr < i_end0_p) {
++        v_q__left = _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr));
++        v_q_right = _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 16u));
++        v_v2j = _mm_add_epi32(v_v2j, v_v1);
++        v_v1 = _mm_add_epi32(v_v1, _mm_sad_epu8(v_q__left, v_zeroes));
++        v_v1 = _mm_add_epi32(v_v1, _mm_sad_epu8(v_q_right, v_zeroes));
++        v_v2k = _mm_add_epi32(v_v2k, _mm_madd_epi16(v_ones, _mm_maddubs_epi16(v_q__left, v_weights__left)));
++        v_v2k = _mm_add_epi32(v_v2k, _mm_madd_epi16(v_ones, _mm_maddubs_epi16(v_q_right, v_weights_right)));
++        v_p.ptr += 32;
+       }
+-      self->private_impl.f_final_checksum_have = (self->private_impl.f_block_checksum_have ^ ((self->private_impl.f_final_checksum_have >> 31u) | ((uint32_t)(self->private_impl.f_final_checksum_have << 1u))));
++      v_p.len = 0;
+     }
+-    v_final_checksum_want = 0u;
+-    v_i = 0u;
+-    while (v_i < 32u) {
+-      if (self->private_impl.f_n_bits <= 0u) {
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint8_t t_5 = *iop_a_src++;
+-          v_c = t_5;
++    v_v1 = _mm_add_epi32(v_v1, _mm_shuffle_epi32(v_v1, (int32_t)(177u)));
++    v_v1 = _mm_add_epi32(v_v1, _mm_shuffle_epi32(v_v1, (int32_t)(78u)));
++    v_s1 += ((uint32_t)(_mm_cvtsi128_si32(v_v1)));
++    v_v2 = _mm_add_epi32(v_v2k, _mm_slli_epi32(v_v2j, (int32_t)(5u)));
++    v_v2 = _mm_add_epi32(v_v2, _mm_shuffle_epi32(v_v2, (int32_t)(177u)));
++    v_v2 = _mm_add_epi32(v_v2, _mm_shuffle_epi32(v_v2, (int32_t)(78u)));
++    v_s2 += ((uint32_t)(_mm_cvtsi128_si32(v_v2)));
++    v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551584u);
++    if (v_tail_index < ((uint64_t)(a_x.len))) {
++      {
++        wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index);
++        v_p.ptr = i_slice_p.ptr;
++        v_p.len = 1;
++        const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(i_slice_p.ptr, i_slice_p.len);
++        while (v_p.ptr < i_end0_p) {
++          v_s1 += ((uint32_t)(v_p.ptr[0u]));
++          v_s2 += v_s1;
++          v_p.ptr += 1;
+         }
+-        self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
+-        self->private_impl.f_n_bits = 8u;
++        v_p.len = 0;
+       }
+-      v_final_checksum_want <<= 1u;
+-      v_final_checksum_want |= (self->private_impl.f_bits >> 31u);
+-      self->private_impl.f_bits <<= 1u;
+-      self->private_impl.f_n_bits -= 1u;
+-      v_i += 1u;
+     }
+-    if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_final_checksum_have != v_final_checksum_want)) {
+-      status = wuffs_base__make_status(wuffs_bzip2__error__bad_checksum);
+-      goto exit;
+-    }
+-
+-    goto ok;
+-    ok:
+-    self->private_impl.p_do_transform_io[0] = 0;
+-    goto exit;
++    v_s1 %= 65521u;
++    v_s2 %= 65521u;
++    a_x = v_remaining;
+   }
++  self->private_impl.f_state = (((v_s2 & 65535u) << 16u) | (v_s1 & 65535u));
++  return wuffs_base__make_empty_struct();
++}
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_do_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_do_transform_io[0].v_i = v_i;
+-  self->private_data.s_do_transform_io[0].v_tag = v_tag;
+-  self->private_data.s_do_transform_io[0].v_final_checksum_want = v_final_checksum_want;
+-
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ADLER32)
+ 
+-  return status;
+-}
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BMP)
+ 
+-// -------- func bzip2.decoder.prepare_block
++// ---------------- Status Codes Implementations
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bzip2__decoder__prepare_block(
+-    wuffs_bzip2__decoder* self,
++const char wuffs_bmp__error__bad_header[] = "#bmp: bad header";
++const char wuffs_bmp__error__bad_rle_compression[] = "#bmp: bad RLE compression";
++const char wuffs_bmp__error__truncated_input[] = "#bmp: truncated input";
++const char wuffs_bmp__error__unsupported_bmp_file[] = "#bmp: unsupported BMP file";
++const char wuffs_bmp__note__internal_note_short_read[] = "@bmp: internal note: short read";
++
++// ---------------- Private Consts
++
++#define WUFFS_BMP__COMPRESSION_NONE 0u
++
++#define WUFFS_BMP__COMPRESSION_RLE8 1u
++
++#define WUFFS_BMP__COMPRESSION_RLE4 2u
++
++#define WUFFS_BMP__COMPRESSION_BITFIELDS 3u
++
++#define WUFFS_BMP__COMPRESSION_JPEG 4u
++
++#define WUFFS_BMP__COMPRESSION_PNG 5u
++
++#define WUFFS_BMP__COMPRESSION_ALPHABITFIELDS 6u
++
++#define WUFFS_BMP__COMPRESSION_LOW_BIT_DEPTH 256u
++
++#define WUFFS_BMP__RLE_STATE_NEUTRAL 0u
++
++#define WUFFS_BMP__RLE_STATE_RUN 1u
++
++#define WUFFS_BMP__RLE_STATE_ESCAPE 2u
++
++#define WUFFS_BMP__RLE_STATE_LITERAL 3u
++
++#define WUFFS_BMP__RLE_STATE_DELTA_X 4u
++
++#define WUFFS_BMP__RLE_STATE_DELTA_Y 5u
++
++// ---------------- Private Initializer Prototypes
++
++// ---------------- Private Function Prototypes
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_bmp__decoder__do_decode_image_config(
++    wuffs_bmp__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_bmp__decoder__do_decode_frame_config(
++    wuffs_bmp__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_bmp__decoder__do_decode_frame(
++    wuffs_bmp__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_bmp__decoder__swizzle_none(
++    wuffs_bmp__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_bmp__decoder__swizzle_rle(
++    wuffs_bmp__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_bmp__decoder__swizzle_bitfields(
++    wuffs_bmp__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_bmp__decoder__swizzle_low_bit_depth(
++    wuffs_bmp__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_bmp__decoder__do_tell_me_more(
++    wuffs_bmp__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__more_information* a_minfo,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_bmp__decoder__read_palette(
++    wuffs_bmp__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_bmp__decoder__process_masks(
++    wuffs_bmp__decoder* self);
++
++// ---------------- VTables
++
++const wuffs_base__image_decoder__func_ptrs
++wuffs_bmp__decoder__func_ptrs_for__wuffs_base__image_decoder = {
++  (wuffs_base__status(*)(void*,
++      wuffs_base__pixel_buffer*,
++      wuffs_base__io_buffer*,
++      wuffs_base__pixel_blend,
++      wuffs_base__slice_u8,
++      wuffs_base__decode_frame_options*))(&wuffs_bmp__decoder__decode_frame),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__frame_config*,
++      wuffs_base__io_buffer*))(&wuffs_bmp__decoder__decode_frame_config),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__image_config*,
++      wuffs_base__io_buffer*))(&wuffs_bmp__decoder__decode_image_config),
++  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_bmp__decoder__frame_dirty_rect),
++  (uint64_t(*)(const void*,
++      uint32_t))(&wuffs_bmp__decoder__get_quirk),
++  (uint32_t(*)(const void*))(&wuffs_bmp__decoder__num_animation_loops),
++  (uint64_t(*)(const void*))(&wuffs_bmp__decoder__num_decoded_frame_configs),
++  (uint64_t(*)(const void*))(&wuffs_bmp__decoder__num_decoded_frames),
++  (wuffs_base__status(*)(void*,
++      uint64_t,
++      uint64_t))(&wuffs_bmp__decoder__restart_frame),
++  (wuffs_base__status(*)(void*,
++      uint32_t,
++      uint64_t))(&wuffs_bmp__decoder__set_quirk),
++  (wuffs_base__empty_struct(*)(void*,
++      uint32_t,
++      bool))(&wuffs_bmp__decoder__set_report_metadata),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__io_buffer*,
++      wuffs_base__more_information*,
++      wuffs_base__io_buffer*))(&wuffs_bmp__decoder__tell_me_more),
++  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_bmp__decoder__workbuf_len),
++};
++
++// ---------------- Initializer Implementations
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_bmp__decoder__initialize(
++    wuffs_bmp__decoder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options){
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (sizeof(*self) != sizeof_star_self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  }
++  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
++      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++  }
++
++  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
++    // The whole point of this if-check is to detect an uninitialized *self.
++    // We disable the warning on GCC. Clang-5.0 does not have this warning.
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++#endif
++    if (self->private_impl.magic != 0) {
++      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++    }
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++  } else {
++    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
++      memset(self, 0, sizeof(*self));
++      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
++    } else {
++      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++    }
++  }
++
++  self->private_impl.magic = WUFFS_BASE__MAGIC;
++  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
++      wuffs_base__image_decoder__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
++      (const void*)(&wuffs_bmp__decoder__func_ptrs_for__wuffs_base__image_decoder);
++  return wuffs_base__make_status(NULL);
++}
++
++wuffs_bmp__decoder*
++wuffs_bmp__decoder__alloc(void) {
++  wuffs_bmp__decoder* x =
++      (wuffs_bmp__decoder*)(calloc(1, sizeof(wuffs_bmp__decoder)));
++  if (!x) {
++    return NULL;
++  }
++  if (wuffs_bmp__decoder__initialize(
++      x, sizeof(wuffs_bmp__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++    free(x);
++    return NULL;
++  }
++  return x;
++}
++
++size_t
++sizeof__wuffs_bmp__decoder(void) {
++  return sizeof(wuffs_bmp__decoder);
++}
++
++// ---------------- Function Implementations
++
++// -------- func bmp.decoder.get_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_bmp__decoder__get_quirk(
++    const wuffs_bmp__decoder* self,
++    uint32_t a_key) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  return 0u;
++}
++
++// -------- func bmp.decoder.set_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_bmp__decoder__set_quirk(
++    wuffs_bmp__decoder* self,
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++
++  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++}
++
++// -------- func bmp.decoder.decode_image_config
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_bmp__decoder__decode_image_config(
++    wuffs_bmp__decoder* self,
++    wuffs_base__image_config* a_dst,
+     wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 1)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint8_t v_c = 0;
+-  uint32_t v_i = 0;
+-  uint32_t v_j = 0;
+-  uint32_t v_selector = 0;
+-  uint32_t v_sel_ff = 0;
+-  uint8_t v_movee = 0;
+   wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
++  uint32_t coro_susp_point = self->private_impl.p_decode_image_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_bmp__decoder__do_decode_image_config(self, a_dst, a_src);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_bmp__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++
++    ok:
++    self->private_impl.p_decode_image_config = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func bmp.decoder.do_decode_image_config
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_bmp__decoder__do_decode_image_config(
++    wuffs_bmp__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint32_t v_magic = 0;
++  uint32_t v_width = 0;
++  uint32_t v_height = 0;
++  uint32_t v_planes = 0;
++  uint32_t v_n = 0;
++  uint32_t v_dst_pixfmt = 0;
++  uint32_t v_byte_width = 0;
++
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -30999,797 +31613,1141 @@ wuffs_bzip2__decoder__prepare_block(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_prepare_block[0];
+-  if (coro_susp_point) {
+-    v_i = self->private_data.s_prepare_block[0].v_i;
+-    v_selector = self->private_data.s_prepare_block[0].v_selector;
+-  }
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    self->private_impl.f_block_checksum_want = 0u;
+-    v_i = 0u;
+-    while (v_i < 32u) {
+-      if (self->private_impl.f_n_bits <= 0u) {
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++    if ((self->private_impl.f_call_sequence != 0u) || (self->private_impl.f_io_redirect_fourcc == 1u)) {
++      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++      goto exit;
++    } else if (self->private_impl.f_io_redirect_fourcc != 0u) {
++      status = wuffs_base__make_status(wuffs_base__note__i_o_redirect);
++      goto ok;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      uint32_t t_0;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++        t_0 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
++        iop_a_src += 2;
++      } else {
++        self->private_data.s_do_decode_image_config.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++        while (true) {
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint8_t t_0 = *iop_a_src++;
+-          v_c = t_0;
+-        }
+-        self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
+-        self->private_impl.f_n_bits = 8u;
+-      }
+-      self->private_impl.f_block_checksum_want <<= 1u;
+-      self->private_impl.f_block_checksum_want |= (self->private_impl.f_bits >> 31u);
+-      self->private_impl.f_bits <<= 1u;
+-      self->private_impl.f_n_bits -= 1u;
+-      v_i += 1u;
+-    }
+-    if (self->private_impl.f_n_bits <= 0u) {
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
++          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
++          *scratch <<= 8;
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
++          if (num_bits_0 == 8) {
++            t_0 = ((uint32_t)(*scratch));
++            break;
++          }
++          num_bits_0 += 8u;
++          *scratch |= ((uint64_t)(num_bits_0)) << 56;
+         }
+-        uint8_t t_1 = *iop_a_src++;
+-        v_c = t_1;
+       }
+-      self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
+-      self->private_impl.f_n_bits = 8u;
++      v_magic = t_0;
+     }
+-    if ((self->private_impl.f_bits >> 31u) != 0u) {
+-      status = wuffs_base__make_status(wuffs_bzip2__error__unsupported_block_randomization);
++    if (v_magic != 19778u) {
++      status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
+       goto exit;
+     }
+-    self->private_impl.f_bits <<= 1u;
+-    self->private_impl.f_n_bits -= 1u;
+-    self->private_impl.f_original_pointer = 0u;
+-    v_i = 0u;
+-    while (v_i < 24u) {
+-      if (self->private_impl.f_n_bits <= 0u) {
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++    self->private_data.s_do_decode_image_config.scratch = 8u;
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++    if (self->private_data.s_do_decode_image_config.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++      self->private_data.s_do_decode_image_config.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++      iop_a_src = io2_a_src;
++      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++      goto suspend;
++    }
++    iop_a_src += self->private_data.s_do_decode_image_config.scratch;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++      uint32_t t_1;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_do_decode_image_config.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++        while (true) {
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint8_t t_2 = *iop_a_src++;
+-          v_c = t_2;
++          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
++          *scratch <<= 8;
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
++          if (num_bits_1 == 24) {
++            t_1 = ((uint32_t)(*scratch));
++            break;
++          }
++          num_bits_1 += 8u;
++          *scratch |= ((uint64_t)(num_bits_1)) << 56;
+         }
+-        self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
+-        self->private_impl.f_n_bits = 8u;
+       }
+-      self->private_impl.f_original_pointer <<= 1u;
+-      self->private_impl.f_original_pointer |= (self->private_impl.f_bits >> 31u);
+-      self->private_impl.f_bits <<= 1u;
+-      self->private_impl.f_n_bits -= 1u;
+-      v_i += 1u;
++      self->private_impl.f_padding = t_1;
+     }
+-    v_i = 0u;
+-    while (v_i < 256u) {
+-      self->private_data.f_presence[v_i] = 0u;
+-      v_i += 1u;
++    if (self->private_impl.f_padding < 14u) {
++      status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
++      goto exit;
+     }
+-    v_i = 0u;
+-    while (v_i < 256u) {
+-      if (self->private_impl.f_n_bits <= 0u) {
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++    self->private_impl.f_padding -= 14u;
++    self->private_impl.f_io_redirect_pos = wuffs_base__u64__sat_add(((uint64_t)(self->private_impl.f_padding)), wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))));
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++      uint32_t t_2;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_do_decode_image_config.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++        while (true) {
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint8_t t_3 = *iop_a_src++;
+-          v_c = t_3;
++          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++          uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
++          *scratch <<= 8;
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
++          if (num_bits_2 == 24) {
++            t_2 = ((uint32_t)(*scratch));
++            break;
++          }
++          num_bits_2 += 8u;
++          *scratch |= ((uint64_t)(num_bits_2)) << 56;
+         }
+-        self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
+-        self->private_impl.f_n_bits = 8u;
+-      }
+-      if ((self->private_impl.f_bits >> 31u) != 0u) {
+-        self->private_data.f_presence[v_i] = 1u;
+       }
+-      self->private_impl.f_bits <<= 1u;
+-      self->private_impl.f_n_bits -= 1u;
+-      v_i += 16u;
++      self->private_impl.f_bitmap_info_len = t_2;
+     }
+-    self->private_data.f_scratch = 0u;
+-    v_i = 0u;
+-    while (v_i < 256u) {
+-      if (self->private_data.f_presence[v_i] == 0u) {
+-        v_i += 16u;
+-        continue;
+-      }
+-      while (true) {
+-        if (self->private_impl.f_n_bits <= 0u) {
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++    if (self->private_impl.f_padding < self->private_impl.f_bitmap_info_len) {
++      status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
++      goto exit;
++    }
++    self->private_impl.f_padding -= self->private_impl.f_bitmap_info_len;
++    if (self->private_impl.f_bitmap_info_len == 12u) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++        uint32_t t_3;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++          t_3 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
++          iop_a_src += 2;
++        } else {
++          self->private_data.s_do_decode_image_config.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++          while (true) {
+             if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+               status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+               goto suspend;
+             }
+-            uint8_t t_4 = *iop_a_src++;
+-            v_c = t_4;
++            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++            uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
++            if (num_bits_3 == 8) {
++              t_3 = ((uint32_t)(*scratch));
++              break;
++            }
++            num_bits_3 += 8u;
++            *scratch |= ((uint64_t)(num_bits_3)) << 56;
+           }
+-          self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
+-          self->private_impl.f_n_bits = 8u;
+-        }
+-        self->private_data.f_scratch += (self->private_impl.f_bits >> 31u);
+-        self->private_data.f_presence[(v_i & 255u)] = ((uint8_t)((self->private_impl.f_bits >> 31u)));
+-        self->private_impl.f_bits <<= 1u;
+-        self->private_impl.f_n_bits -= 1u;
+-        v_i += 1u;
+-        if ((v_i & 15u) == 0u) {
+-          break;
+         }
++        self->private_impl.f_width = t_3;
+       }
+-    }
+-    if ((self->private_data.f_scratch < 1u) || (256u < self->private_data.f_scratch)) {
+-      status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
+-      goto exit;
+-    }
+-    self->private_impl.f_num_symbols = (self->private_data.f_scratch + 2u);
+-    self->private_data.f_scratch = 0u;
+-    v_i = 0u;
+-    while (v_i < 3u) {
+-      if (self->private_impl.f_n_bits <= 0u) {
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
++        uint32_t t_4;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++          t_4 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
++          iop_a_src += 2;
++        } else {
++          self->private_data.s_do_decode_image_config.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++            uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
++            if (num_bits_4 == 8) {
++              t_4 = ((uint32_t)(*scratch));
++              break;
++            }
++            num_bits_4 += 8u;
++            *scratch |= ((uint64_t)(num_bits_4)) << 56;
+           }
+-          uint8_t t_5 = *iop_a_src++;
+-          v_c = t_5;
+         }
+-        self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
+-        self->private_impl.f_n_bits = 8u;
++        self->private_impl.f_height = t_4;
+       }
+-      self->private_data.f_scratch <<= 1u;
+-      self->private_data.f_scratch |= (self->private_impl.f_bits >> 31u);
+-      self->private_impl.f_bits <<= 1u;
+-      self->private_impl.f_n_bits -= 1u;
+-      v_i += 1u;
+-    }
+-    if ((self->private_data.f_scratch < 2u) || (6u < self->private_data.f_scratch)) {
+-      status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
+-      goto exit;
+-    }
+-    self->private_impl.f_num_huffman_codes = self->private_data.f_scratch;
+-    self->private_data.f_scratch = 0u;
+-    v_i = 0u;
+-    while (v_i < 15u) {
+-      if (self->private_impl.f_n_bits <= 0u) {
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
++        uint32_t t_5;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++          t_5 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
++          iop_a_src += 2;
++        } else {
++          self->private_data.s_do_decode_image_config.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++            uint32_t num_bits_5 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_5;
++            if (num_bits_5 == 8) {
++              t_5 = ((uint32_t)(*scratch));
++              break;
++            }
++            num_bits_5 += 8u;
++            *scratch |= ((uint64_t)(num_bits_5)) << 56;
+           }
+-          uint8_t t_6 = *iop_a_src++;
+-          v_c = t_6;
+         }
+-        self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
+-        self->private_impl.f_n_bits = 8u;
++        v_planes = t_5;
+       }
+-      self->private_data.f_scratch <<= 1u;
+-      self->private_data.f_scratch |= (self->private_impl.f_bits >> 31u);
+-      self->private_impl.f_bits <<= 1u;
+-      self->private_impl.f_n_bits -= 1u;
+-      v_i += 1u;
+-    }
+-    if ((self->private_data.f_scratch < 1u) || (18001u < self->private_data.f_scratch)) {
+-      status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
+-      goto exit;
+-    }
+-    self->private_impl.f_num_sections = self->private_data.f_scratch;
+-    v_i = 0u;
+-    while (v_i < self->private_impl.f_num_huffman_codes) {
+-      self->private_data.f_mtft[v_i] = ((uint8_t)(v_i));
+-      v_i += 1u;
+-    }
+-    v_i = 0u;
+-    while (v_i < self->private_impl.f_num_sections) {
+-      v_selector = 0u;
+-      while (true) {
+-        if (self->private_impl.f_n_bits <= 0u) {
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++      if (v_planes != 1u) {
++        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
++        goto exit;
++      }
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
++        uint32_t t_6;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++          t_6 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
++          iop_a_src += 2;
++        } else {
++          self->private_data.s_do_decode_image_config.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
++          while (true) {
+             if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+               status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+               goto suspend;
+             }
+-            uint8_t t_7 = *iop_a_src++;
+-            v_c = t_7;
++            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++            uint32_t num_bits_6 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_6;
++            if (num_bits_6 == 8) {
++              t_6 = ((uint32_t)(*scratch));
++              break;
++            }
++            num_bits_6 += 8u;
++            *scratch |= ((uint64_t)(num_bits_6)) << 56;
+           }
+-          self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
+-          self->private_impl.f_n_bits = 8u;
+-        }
+-        if ((self->private_impl.f_bits >> 31u) == 0u) {
+-          self->private_impl.f_bits <<= 1u;
+-          self->private_impl.f_n_bits -= 1u;
+-          break;
+         }
+-        self->private_impl.f_bits <<= 1u;
+-        self->private_impl.f_n_bits -= 1u;
+-        v_selector += 1u;
+-        if (v_selector >= self->private_impl.f_num_huffman_codes) {
+-          status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
+-          goto exit;
++        self->private_impl.f_bits_per_pixel = t_6;
++      }
++    } else if (self->private_impl.f_bitmap_info_len == 16u) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
++        uint32_t t_7;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++          t_7 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++          iop_a_src += 4;
++        } else {
++          self->private_data.s_do_decode_image_config.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(17);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++            uint32_t num_bits_7 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_7;
++            if (num_bits_7 == 24) {
++              t_7 = ((uint32_t)(*scratch));
++              break;
++            }
++            num_bits_7 += 8u;
++            *scratch |= ((uint64_t)(num_bits_7)) << 56;
++          }
+         }
++        v_width = t_7;
+       }
+-      if (v_selector == 0u) {
+-        self->private_data.f_huffman_selectors[v_i] = self->private_data.f_mtft[0u];
+-      } else {
+-        v_sel_ff = (v_selector & 255u);
+-        v_movee = self->private_data.f_mtft[v_sel_ff];
+-        wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_mtft, 1, (1u + v_sel_ff)), wuffs_base__make_slice_u8(self->private_data.f_mtft, v_sel_ff));
+-        self->private_data.f_mtft[0u] = v_movee;
+-        self->private_data.f_huffman_selectors[v_i] = v_movee;
++      if (v_width > 2147483647u) {
++        status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
++        goto exit;
++      } else if (v_width > 16777215u) {
++        status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
++        goto exit;
+       }
+-      v_i += 1u;
+-    }
+-    v_i = 0u;
+-    while (v_i < self->private_impl.f_num_huffman_codes) {
+-      if (a_src) {
+-        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      self->private_impl.f_width = v_width;
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(18);
++        uint32_t t_8;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++          t_8 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++          iop_a_src += 4;
++        } else {
++          self->private_data.s_do_decode_image_config.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(19);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++            uint32_t num_bits_8 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_8;
++            if (num_bits_8 == 24) {
++              t_8 = ((uint32_t)(*scratch));
++              break;
++            }
++            num_bits_8 += 8u;
++            *scratch |= ((uint64_t)(num_bits_8)) << 56;
++          }
++        }
++        v_height = t_8;
+       }
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
+-      status = wuffs_bzip2__decoder__read_code_lengths(self, a_src);
+-      if (a_src) {
+-        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      if (v_height > 2147483647u) {
++        status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
++        goto exit;
++      } else if (v_height > 16777215u) {
++        status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
++        goto exit;
+       }
+-      if (status.repr) {
+-        goto suspend;
++      self->private_impl.f_height = v_height;
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(20);
++        uint32_t t_9;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++          t_9 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
++          iop_a_src += 2;
++        } else {
++          self->private_data.s_do_decode_image_config.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(21);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++            uint32_t num_bits_9 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_9;
++            if (num_bits_9 == 8) {
++              t_9 = ((uint32_t)(*scratch));
++              break;
++            }
++            num_bits_9 += 8u;
++            *scratch |= ((uint64_t)(num_bits_9)) << 56;
++          }
++        }
++        v_planes = t_9;
+       }
+-      v_status = wuffs_bzip2__decoder__build_huffman_tree(self, v_i);
+-      if (wuffs_base__status__is_error(&v_status)) {
+-        status = v_status;
++      if (v_planes != 1u) {
++        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
+         goto exit;
+       }
+-      wuffs_bzip2__decoder__build_huffman_table(self, v_i);
+-      v_i += 1u;
+-    }
+-    v_i = 0u;
+-    v_j = 0u;
+-    while (v_i < 256u) {
+-      if (self->private_data.f_presence[v_i] != 0u) {
+-        self->private_data.f_mtft[(v_j & 255u)] = ((uint8_t)(v_i));
+-        v_j += 1u;
+-      }
+-      v_i += 1u;
+-    }
+-    v_i = 0u;
+-    while (v_i < 256u) {
+-      self->private_data.f_letter_counts[v_i] = 0u;
+-      v_i += 1u;
+-    }
+-
+-    goto ok;
+-    ok:
+-    self->private_impl.p_prepare_block[0] = 0;
+-    goto exit;
+-  }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_prepare_block[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_prepare_block[0].v_i = v_i;
+-  self->private_data.s_prepare_block[0].v_selector = v_selector;
+-
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
+-
+-  return status;
+-}
+-
+-// -------- func bzip2.decoder.read_code_lengths
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bzip2__decoder__read_code_lengths(
+-    wuffs_bzip2__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  uint8_t v_c = 0;
+-  uint32_t v_i = 0;
+-  uint32_t v_code_length = 0;
+-
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
+-
+-  uint32_t coro_susp_point = self->private_impl.p_read_code_lengths[0];
+-  if (coro_susp_point) {
+-    v_i = self->private_data.s_read_code_lengths[0].v_i;
+-    v_code_length = self->private_data.s_read_code_lengths[0].v_code_length;
+-  }
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    self->private_impl.f_code_lengths_bitmask = 0u;
+-    v_i = 0u;
+-    while (v_i < 5u) {
+-      if (self->private_impl.f_n_bits <= 0u) {
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22);
++        uint32_t t_10;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++          t_10 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
++          iop_a_src += 2;
++        } else {
++          self->private_data.s_do_decode_image_config.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(23);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++            uint32_t num_bits_10 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_10;
++            if (num_bits_10 == 8) {
++              t_10 = ((uint32_t)(*scratch));
++              break;
++            }
++            num_bits_10 += 8u;
++            *scratch |= ((uint64_t)(num_bits_10)) << 56;
+           }
+-          uint8_t t_0 = *iop_a_src++;
+-          v_c = t_0;
+         }
+-        self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
+-        self->private_impl.f_n_bits = 8u;
++        self->private_impl.f_bits_per_pixel = t_10;
+       }
+-      v_code_length <<= 1u;
+-      v_code_length |= (self->private_impl.f_bits >> 31u);
+-      self->private_impl.f_bits <<= 1u;
+-      self->private_impl.f_n_bits -= 1u;
+-      v_i += 1u;
+-    }
+-    v_i = 0u;
+-    while (v_i < self->private_impl.f_num_symbols) {
+-      while (true) {
+-        if ((v_code_length < 1u) || (20u < v_code_length)) {
+-          status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
+-          goto exit;
+-        }
+-        if (self->private_impl.f_n_bits <= 0u) {
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++    } else {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(24);
++        uint32_t t_11;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++          t_11 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++          iop_a_src += 4;
++        } else {
++          self->private_data.s_do_decode_image_config.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(25);
++          while (true) {
+             if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+               status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+               goto suspend;
+             }
+-            uint8_t t_1 = *iop_a_src++;
+-            v_c = t_1;
++            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++            uint32_t num_bits_11 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_11;
++            if (num_bits_11 == 24) {
++              t_11 = ((uint32_t)(*scratch));
++              break;
++            }
++            num_bits_11 += 8u;
++            *scratch |= ((uint64_t)(num_bits_11)) << 56;
+           }
+-          self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
+-          self->private_impl.f_n_bits = 8u;
+         }
+-        if ((self->private_impl.f_bits >> 31u) == 0u) {
+-          self->private_impl.f_bits <<= 1u;
+-          self->private_impl.f_n_bits -= 1u;
+-          break;
+-        }
+-        self->private_impl.f_bits <<= 1u;
+-        self->private_impl.f_n_bits -= 1u;
+-        if (self->private_impl.f_n_bits <= 0u) {
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++        v_width = t_11;
++      }
++      if (v_width > 2147483647u) {
++        status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
++        goto exit;
++      } else if (v_width > 16777215u) {
++        status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
++        goto exit;
++      }
++      self->private_impl.f_width = v_width;
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(26);
++        uint32_t t_12;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++          t_12 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++          iop_a_src += 4;
++        } else {
++          self->private_data.s_do_decode_image_config.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(27);
++          while (true) {
+             if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+               status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+               goto suspend;
+             }
+-            uint8_t t_2 = *iop_a_src++;
+-            v_c = t_2;
++            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++            uint32_t num_bits_12 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_12;
++            if (num_bits_12 == 24) {
++              t_12 = ((uint32_t)(*scratch));
++              break;
++            }
++            num_bits_12 += 8u;
++            *scratch |= ((uint64_t)(num_bits_12)) << 56;
+           }
+-          self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
+-          self->private_impl.f_n_bits = 8u;
+         }
+-        if ((self->private_impl.f_bits >> 31u) == 0u) {
+-          v_code_length += 1u;
++        v_height = t_12;
++      }
++      if (v_height == 2147483648u) {
++        status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
++        goto exit;
++      } else if (v_height > 2147483648u) {
++        v_height = ((uint32_t)(0u - v_height));
++        if (v_height > 16777215u) {
++          status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
++          goto exit;
++        }
++        self->private_impl.f_height = v_height;
++        self->private_impl.f_top_down = true;
++      } else if (v_height > 16777215u) {
++        status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
++        goto exit;
++      } else {
++        self->private_impl.f_height = v_height;
++      }
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(28);
++        uint32_t t_13;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++          t_13 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
++          iop_a_src += 2;
+         } else {
+-          v_code_length -= 1u;
++          self->private_data.s_do_decode_image_config.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(29);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++            uint32_t num_bits_13 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_13;
++            if (num_bits_13 == 8) {
++              t_13 = ((uint32_t)(*scratch));
++              break;
++            }
++            num_bits_13 += 8u;
++            *scratch |= ((uint64_t)(num_bits_13)) << 56;
++          }
+         }
+-        self->private_impl.f_bits <<= 1u;
+-        self->private_impl.f_n_bits -= 1u;
++        v_planes = t_13;
+       }
+-      self->private_impl.f_code_lengths_bitmask |= (((uint32_t)(1u)) << (v_code_length & 31u));
+-      self->private_data.f_bwt[v_i] = v_code_length;
+-      v_i += 1u;
+-    }
+-
+-    goto ok;
+-    ok:
+-    self->private_impl.p_read_code_lengths[0] = 0;
+-    goto exit;
+-  }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_read_code_lengths[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_read_code_lengths[0].v_i = v_i;
+-  self->private_data.s_read_code_lengths[0].v_code_length = v_code_length;
+-
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
+-
+-  return status;
+-}
+-
+-// -------- func bzip2.decoder.build_huffman_tree
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bzip2__decoder__build_huffman_tree(
+-    wuffs_bzip2__decoder* self,
+-    uint32_t a_which) {
+-  uint32_t v_code_length = 0;
+-  uint32_t v_symbol_index = 0;
+-  uint32_t v_num_branch_nodes = 0;
+-  uint32_t v_stack_height = 0;
+-  uint32_t v_stack_values[21] = {0};
+-  uint32_t v_node_index = 0;
+-  uint16_t v_leaf_value = 0;
+-
+-  self->private_data.f_huffman_trees[a_which][0u][0u] = 0u;
+-  self->private_data.f_huffman_trees[a_which][0u][1u] = 0u;
+-  v_num_branch_nodes = 1u;
+-  v_stack_height = 1u;
+-  v_stack_values[0u] = 0u;
+-  v_code_length = 1u;
+-  while (v_code_length <= 20u) {
+-    if ((self->private_impl.f_code_lengths_bitmask & (((uint32_t)(1u)) << v_code_length)) == 0u) {
+-      v_code_length += 1u;
+-      continue;
+-    }
+-    v_symbol_index = 0u;
+-    while (v_symbol_index < self->private_impl.f_num_symbols) {
+-      if (self->private_data.f_bwt[v_symbol_index] != v_code_length) {
+-        v_symbol_index += 1u;
+-        continue;
++      if (v_planes != 1u) {
++        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
++        goto exit;
+       }
+-      while (true) {
+-        if (v_stack_height <= 0u) {
+-          return wuffs_base__make_status(wuffs_bzip2__error__bad_huffman_code_over_subscribed);
+-        } else if (v_stack_height >= v_code_length) {
+-          break;
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(30);
++        uint32_t t_14;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++          t_14 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
++          iop_a_src += 2;
++        } else {
++          self->private_data.s_do_decode_image_config.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(31);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++            uint32_t num_bits_14 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_14;
++            if (num_bits_14 == 8) {
++              t_14 = ((uint32_t)(*scratch));
++              break;
++            }
++            num_bits_14 += 8u;
++            *scratch |= ((uint64_t)(num_bits_14)) << 56;
++          }
+         }
+-        v_node_index = v_stack_values[(v_stack_height - 1u)];
+-        if (self->private_data.f_huffman_trees[a_which][v_node_index][0u] == 0u) {
+-          self->private_data.f_huffman_trees[a_which][v_node_index][0u] = ((uint16_t)(v_num_branch_nodes));
++        self->private_impl.f_bits_per_pixel = t_14;
++      }
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(32);
++        uint32_t t_15;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++          t_15 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++          iop_a_src += 4;
+         } else {
+-          self->private_data.f_huffman_trees[a_which][v_node_index][1u] = ((uint16_t)(v_num_branch_nodes));
++          self->private_data.s_do_decode_image_config.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(33);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++            uint32_t num_bits_15 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_15;
++            if (num_bits_15 == 24) {
++              t_15 = ((uint32_t)(*scratch));
++              break;
++            }
++            num_bits_15 += 8u;
++            *scratch |= ((uint64_t)(num_bits_15)) << 56;
++          }
+         }
+-        if (v_num_branch_nodes >= 257u) {
+-          return wuffs_base__make_status(wuffs_bzip2__error__bad_huffman_code_under_subscribed);
++        self->private_impl.f_compression = t_15;
++      }
++      if (self->private_impl.f_bits_per_pixel == 0u) {
++        if (self->private_impl.f_compression == 4u) {
++          self->private_impl.f_io_redirect_fourcc = 1246774599u;
++          status = wuffs_base__make_status(wuffs_base__note__i_o_redirect);
++          goto ok;
++        } else if (self->private_impl.f_compression == 5u) {
++          self->private_impl.f_io_redirect_fourcc = 1347307296u;
++          status = wuffs_base__make_status(wuffs_base__note__i_o_redirect);
++          goto ok;
+         }
+-        v_stack_values[v_stack_height] = v_num_branch_nodes;
+-        self->private_data.f_huffman_trees[a_which][v_num_branch_nodes][0u] = 0u;
+-        self->private_data.f_huffman_trees[a_which][v_num_branch_nodes][1u] = 0u;
+-        v_num_branch_nodes += 1u;
+-        v_stack_height += 1u;
++        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
++        goto exit;
+       }
+-      v_node_index = v_stack_values[(v_stack_height - 1u)];
+-      if (v_symbol_index < 2u) {
+-        v_leaf_value = ((uint16_t)((769u + v_symbol_index)));
+-      } else if ((v_symbol_index + 1u) < self->private_impl.f_num_symbols) {
+-        v_leaf_value = ((uint16_t)((511u + v_symbol_index)));
+-      } else {
+-        v_leaf_value = 768u;
++      self->private_data.s_do_decode_image_config.scratch = 20u;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(34);
++      if (self->private_data.s_do_decode_image_config.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++        self->private_data.s_do_decode_image_config.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++        iop_a_src = io2_a_src;
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
+       }
+-      if (self->private_data.f_huffman_trees[a_which][v_node_index][0u] == 0u) {
+-        self->private_data.f_huffman_trees[a_which][v_node_index][0u] = v_leaf_value;
+-      } else {
+-        self->private_data.f_huffman_trees[a_which][v_node_index][1u] = v_leaf_value;
+-        v_stack_height -= 1u;
+-        while (v_stack_height > 0u) {
+-          v_node_index = v_stack_values[(v_stack_height - 1u)];
+-          if (self->private_data.f_huffman_trees[a_which][v_node_index][1u] == 0u) {
+-            break;
++      iop_a_src += self->private_data.s_do_decode_image_config.scratch;
++      if (self->private_impl.f_bitmap_info_len == 40u) {
++        if (self->private_impl.f_bits_per_pixel >= 16u) {
++          if (self->private_impl.f_padding >= 16u) {
++            self->private_impl.f_bitmap_info_len = 56u;
++            self->private_impl.f_padding -= 16u;
++          } else if (self->private_impl.f_padding >= 12u) {
++            self->private_impl.f_bitmap_info_len = 52u;
++            self->private_impl.f_padding -= 12u;
+           }
+-          v_stack_height -= 1u;
+         }
++      } else if ((self->private_impl.f_bitmap_info_len != 52u) &&
++          (self->private_impl.f_bitmap_info_len != 56u) &&
++          (self->private_impl.f_bitmap_info_len != 64u) &&
++          (self->private_impl.f_bitmap_info_len != 108u) &&
++          (self->private_impl.f_bitmap_info_len != 124u)) {
++        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
++        goto exit;
++      }
++      if (self->private_impl.f_compression == 6u) {
++        self->private_impl.f_compression = 3u;
++      }
++      if (self->private_impl.f_compression == 3u) {
++        if (self->private_impl.f_bitmap_info_len >= 52u) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(35);
++            uint32_t t_16;
++            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++              t_16 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++              iop_a_src += 4;
++            } else {
++              self->private_data.s_do_decode_image_config.scratch = 0;
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(36);
++              while (true) {
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++                uint32_t num_bits_16 = ((uint32_t)(*scratch >> 56));
++                *scratch <<= 8;
++                *scratch >>= 8;
++                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_16;
++                if (num_bits_16 == 24) {
++                  t_16 = ((uint32_t)(*scratch));
++                  break;
++                }
++                num_bits_16 += 8u;
++                *scratch |= ((uint64_t)(num_bits_16)) << 56;
++              }
++            }
++            self->private_impl.f_channel_masks[2u] = t_16;
++          }
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(37);
++            uint32_t t_17;
++            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++              t_17 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++              iop_a_src += 4;
++            } else {
++              self->private_data.s_do_decode_image_config.scratch = 0;
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(38);
++              while (true) {
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++                uint32_t num_bits_17 = ((uint32_t)(*scratch >> 56));
++                *scratch <<= 8;
++                *scratch >>= 8;
++                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_17;
++                if (num_bits_17 == 24) {
++                  t_17 = ((uint32_t)(*scratch));
++                  break;
++                }
++                num_bits_17 += 8u;
++                *scratch |= ((uint64_t)(num_bits_17)) << 56;
++              }
++            }
++            self->private_impl.f_channel_masks[1u] = t_17;
++          }
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(39);
++            uint32_t t_18;
++            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++              t_18 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++              iop_a_src += 4;
++            } else {
++              self->private_data.s_do_decode_image_config.scratch = 0;
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(40);
++              while (true) {
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++                uint32_t num_bits_18 = ((uint32_t)(*scratch >> 56));
++                *scratch <<= 8;
++                *scratch >>= 8;
++                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_18;
++                if (num_bits_18 == 24) {
++                  t_18 = ((uint32_t)(*scratch));
++                  break;
++                }
++                num_bits_18 += 8u;
++                *scratch |= ((uint64_t)(num_bits_18)) << 56;
++              }
++            }
++            self->private_impl.f_channel_masks[0u] = t_18;
++          }
++          if (self->private_impl.f_bitmap_info_len >= 56u) {
++            {
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(41);
++              uint32_t t_19;
++              if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++                t_19 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++                iop_a_src += 4;
++              } else {
++                self->private_data.s_do_decode_image_config.scratch = 0;
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(42);
++                while (true) {
++                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                    goto suspend;
++                  }
++                  uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++                  uint32_t num_bits_19 = ((uint32_t)(*scratch >> 56));
++                  *scratch <<= 8;
++                  *scratch >>= 8;
++                  *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_19;
++                  if (num_bits_19 == 24) {
++                    t_19 = ((uint32_t)(*scratch));
++                    break;
++                  }
++                  num_bits_19 += 8u;
++                  *scratch |= ((uint64_t)(num_bits_19)) << 56;
++                }
++              }
++              self->private_impl.f_channel_masks[3u] = t_19;
++            }
++            self->private_data.s_do_decode_image_config.scratch = ((uint32_t)(self->private_impl.f_bitmap_info_len - 56u));
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(43);
++            if (self->private_data.s_do_decode_image_config.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++              self->private_data.s_do_decode_image_config.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++              iop_a_src = io2_a_src;
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            iop_a_src += self->private_data.s_do_decode_image_config.scratch;
++          }
++          if ((self->private_impl.f_channel_masks[0u] == 255u) && (self->private_impl.f_channel_masks[1u] == 65280u) && (self->private_impl.f_channel_masks[2u] == 16711680u)) {
++            if (self->private_impl.f_bits_per_pixel == 24u) {
++              self->private_impl.f_compression = 0u;
++            } else if (self->private_impl.f_bits_per_pixel == 32u) {
++              if ((self->private_impl.f_channel_masks[3u] == 0u) || (self->private_impl.f_channel_masks[3u] == 4278190080u)) {
++                self->private_impl.f_compression = 0u;
++              }
++            }
++          }
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(44);
++          status = wuffs_bmp__decoder__process_masks(self);
++          if (status.repr) {
++            goto suspend;
++          }
++        }
++      } else if (self->private_impl.f_bitmap_info_len >= 40u) {
++        v_n = (self->private_impl.f_bitmap_info_len - 40u);
++        self->private_data.s_do_decode_image_config.scratch = v_n;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(45);
++        if (self->private_data.s_do_decode_image_config.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++          self->private_data.s_do_decode_image_config.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++          iop_a_src = io2_a_src;
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        iop_a_src += self->private_data.s_do_decode_image_config.scratch;
++      } else {
++        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
++        goto exit;
+       }
+-      v_symbol_index += 1u;
+     }
+-    v_code_length += 1u;
++    if (self->private_impl.f_compression != 3u) {
++      if (self->private_impl.f_bits_per_pixel < 16u) {
++        if (a_src) {
++          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++        }
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(46);
++        status = wuffs_bmp__decoder__read_palette(self, a_src);
++        if (a_src) {
++          iop_a_src = a_src->data.ptr + a_src->meta.ri;
++        }
++        if (status.repr) {
++          goto suspend;
++        }
++      }
++    }
++    if (self->private_impl.f_compression == 0u) {
++      if ((self->private_impl.f_bits_per_pixel == 1u) || (self->private_impl.f_bits_per_pixel == 2u) || (self->private_impl.f_bits_per_pixel == 4u)) {
++        self->private_impl.f_src_pixfmt = 2198077448u;
++        self->private_impl.f_compression = 256u;
++      } else if (self->private_impl.f_bits_per_pixel == 8u) {
++        self->private_impl.f_src_pixfmt = 2198077448u;
++      } else if (self->private_impl.f_bits_per_pixel == 16u) {
++        self->private_impl.f_compression = 3u;
++        self->private_impl.f_channel_masks[0u] = 31u;
++        self->private_impl.f_channel_masks[1u] = 992u;
++        self->private_impl.f_channel_masks[2u] = 31744u;
++        self->private_impl.f_channel_masks[3u] = 0u;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(47);
++        status = wuffs_bmp__decoder__process_masks(self);
++        if (status.repr) {
++          goto suspend;
++        }
++        self->private_impl.f_src_pixfmt = 2164308923u;
++      } else if (self->private_impl.f_bits_per_pixel == 24u) {
++        self->private_impl.f_src_pixfmt = 2147485832u;
++      } else if (self->private_impl.f_bits_per_pixel == 32u) {
++        if (self->private_impl.f_channel_masks[3u] == 0u) {
++          self->private_impl.f_src_pixfmt = 2415954056u;
++        } else {
++          self->private_impl.f_src_pixfmt = 2164295816u;
++        }
++      } else {
++        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
++        goto exit;
++      }
++    } else if (self->private_impl.f_compression == 1u) {
++      if (self->private_impl.f_bits_per_pixel == 8u) {
++        self->private_impl.f_src_pixfmt = 2198077448u;
++      } else {
++        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
++        goto exit;
++      }
++    } else if (self->private_impl.f_compression == 2u) {
++      if (self->private_impl.f_bits_per_pixel == 4u) {
++        self->private_impl.f_src_pixfmt = 2198077448u;
++      } else {
++        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
++        goto exit;
++      }
++    } else if (self->private_impl.f_compression == 3u) {
++      if ((self->private_impl.f_bits_per_pixel == 16u) || (self->private_impl.f_bits_per_pixel == 32u)) {
++        self->private_impl.f_src_pixfmt = 2164308923u;
++      } else {
++        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
++        goto exit;
++      }
++    } else {
++      status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
++      goto exit;
++    }
++    if (((self->private_impl.f_bitmap_info_len < 40u) || (self->private_impl.f_bitmap_info_len == 64u)) &&
++        (self->private_impl.f_bits_per_pixel != 1u) &&
++        (self->private_impl.f_bits_per_pixel != 4u) &&
++        (self->private_impl.f_bits_per_pixel != 8u) &&
++        (self->private_impl.f_bits_per_pixel != 24u)) {
++      status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
++      goto exit;
++    }
++    if (self->private_impl.f_bits_per_pixel == 1u) {
++      v_byte_width = ((self->private_impl.f_width >> 3u) + (((self->private_impl.f_width & 7u) + 7u) >> 3u));
++      self->private_impl.f_pad_per_row = ((4u - (v_byte_width & 3u)) & 3u);
++    } else if (self->private_impl.f_bits_per_pixel == 2u) {
++      v_byte_width = ((self->private_impl.f_width >> 2u) + (((self->private_impl.f_width & 3u) + 3u) >> 2u));
++      self->private_impl.f_pad_per_row = ((4u - (v_byte_width & 3u)) & 3u);
++    } else if (self->private_impl.f_bits_per_pixel == 4u) {
++      v_byte_width = ((self->private_impl.f_width >> 1u) + (self->private_impl.f_width & 1u));
++      self->private_impl.f_pad_per_row = ((4u - (v_byte_width & 3u)) & 3u);
++    } else if (self->private_impl.f_bits_per_pixel == 8u) {
++      self->private_impl.f_pad_per_row = ((4u - (self->private_impl.f_width & 3u)) & 3u);
++    } else if (self->private_impl.f_bits_per_pixel == 16u) {
++      self->private_impl.f_pad_per_row = ((self->private_impl.f_width & 1u) * 2u);
++    } else if (self->private_impl.f_bits_per_pixel == 24u) {
++      self->private_impl.f_pad_per_row = (self->private_impl.f_width & 3u);
++    } else if (self->private_impl.f_bits_per_pixel == 32u) {
++      self->private_impl.f_pad_per_row = 0u;
++    }
++    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
++    if (a_dst != NULL) {
++      v_dst_pixfmt = 2164295816u;
++      if ((self->private_impl.f_channel_num_bits[0u] > 8u) ||
++          (self->private_impl.f_channel_num_bits[1u] > 8u) ||
++          (self->private_impl.f_channel_num_bits[2u] > 8u) ||
++          (self->private_impl.f_channel_num_bits[3u] > 8u)) {
++        v_dst_pixfmt = 2164308923u;
++      } else if (((self->private_impl.f_src_pixfmt == 2198077448u) || (self->private_impl.f_src_pixfmt == 2147485832u) || (self->private_impl.f_src_pixfmt == 2415954056u)) || ((self->private_impl.f_src_pixfmt == 2164308923u) && (self->private_impl.f_channel_masks[3u] == 0u))) {
++        v_dst_pixfmt = 2415954056u;
++      }
++      wuffs_base__image_config__set(
++          a_dst,
++          v_dst_pixfmt,
++          0u,
++          self->private_impl.f_width,
++          self->private_impl.f_height,
++          self->private_impl.f_frame_config_io_position,
++          (self->private_impl.f_channel_masks[3u] == 0u));
++    }
++    self->private_impl.f_call_sequence = 32u;
++
++    ok:
++    self->private_impl.p_do_decode_image_config = 0;
++    goto exit;
+   }
+-  if (v_stack_height != 0u) {
+-    return wuffs_base__make_status(wuffs_bzip2__error__bad_huffman_code_under_subscribed);
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+-  return wuffs_base__make_status(NULL);
++
++  return status;
+ }
+ 
+-// -------- func bzip2.decoder.build_huffman_table
++// -------- func bmp.decoder.decode_frame_config
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_bzip2__decoder__build_huffman_table(
+-    wuffs_bzip2__decoder* self,
+-    uint32_t a_which) {
+-  uint32_t v_i = 0;
+-  uint32_t v_bits = 0;
+-  uint16_t v_n_bits = 0;
+-  uint16_t v_child = 0;
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_bmp__decoder__decode_frame_config(
++    wuffs_bmp__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 2)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  while (v_i < 256u) {
+-    v_bits = (v_i << 24u);
+-    v_n_bits = 0u;
+-    v_child = 0u;
+-    while ((v_child < 257u) && (v_n_bits < 8u)) {
+-      v_child = self->private_data.f_huffman_trees[a_which][v_child][(v_bits >> 31u)];
+-      v_bits <<= 1u;
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wconversion"
+-#endif
+-      v_n_bits += 1u;
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_bmp__decoder__do_decode_frame_config(self, a_dst, a_src);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_bmp__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+     }
+-    self->private_data.f_huffman_tables[a_which][v_i] = ((uint16_t)((v_child | (v_n_bits << 12u))));
+-    v_i += 1u;
++
++    ok:
++    self->private_impl.p_decode_frame_config = 0;
++    goto exit;
+   }
+-  return wuffs_base__make_empty_struct();
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
+ }
+ 
+-// -------- func bzip2.decoder.invert_bwt
++// -------- func bmp.decoder.do_decode_frame_config
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_bzip2__decoder__invert_bwt(
+-    wuffs_bzip2__decoder* self) {
+-  uint32_t v_i = 0;
+-  uint32_t v_letter = 0;
+-  uint32_t v_sum = 0;
+-  uint32_t v_old_sum = 0;
++static wuffs_base__status
++wuffs_bmp__decoder__do_decode_frame_config(
++    wuffs_bmp__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  v_sum = 0u;
+-  v_i = 0u;
+-  while (v_i < 256u) {
+-    v_old_sum = v_sum;
+-    v_sum += self->private_data.f_letter_counts[v_i];
+-    self->private_data.f_letter_counts[v_i] = v_old_sum;
+-    v_i += 1u;
+-  }
+-  v_i = 0u;
+-  while (v_i < self->private_impl.f_block_size) {
+-    v_letter = (self->private_data.f_bwt[v_i] & 255u);
+-    self->private_data.f_bwt[(self->private_data.f_letter_counts[v_letter] & 1048575u)] |= (v_i << 12u);
+-    self->private_data.f_letter_counts[v_letter] += 1u;
+-    v_i += 1u;
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+-  return wuffs_base__make_empty_struct();
+-}
+-
+-// -------- func bzip2.decoder.flush_fast
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_bzip2__decoder__flush_fast(
+-    wuffs_bzip2__decoder* self,
+-    wuffs_base__io_buffer* a_dst) {
+-  uint32_t v_flush_pointer = 0;
+-  uint32_t v_flush_repeat_count = 0;
+-  uint8_t v_flush_prev = 0;
+-  uint32_t v_block_checksum_have = 0;
+-  uint32_t v_block_size = 0;
+-  uint32_t v_entry = 0;
+-  uint8_t v_curr = 0;
+ 
+-  uint8_t* iop_a_dst = NULL;
+-  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_dst && a_dst->data.ptr) {
+-    io0_a_dst = a_dst->data.ptr;
+-    io1_a_dst = io0_a_dst + a_dst->meta.wi;
+-    iop_a_dst = io1_a_dst;
+-    io2_a_dst = io0_a_dst + a_dst->data.len;
+-    if (a_dst->meta.closed) {
+-      io2_a_dst = iop_a_dst;
+-    }
+-  }
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-  v_flush_pointer = self->private_impl.f_flush_pointer;
+-  v_flush_repeat_count = self->private_impl.f_flush_repeat_count;
+-  v_flush_prev = self->private_impl.f_flush_prev;
+-  v_block_checksum_have = self->private_impl.f_block_checksum_have;
+-  v_block_size = self->private_impl.f_block_size;
+-  while ((v_block_size > 0u) && (((uint64_t)(io2_a_dst - iop_a_dst)) >= 255u)) {
+-    if (v_flush_repeat_count < 4u) {
+-      v_entry = self->private_data.f_bwt[v_flush_pointer];
+-      v_curr = ((uint8_t)(v_entry));
+-      v_flush_pointer = (v_entry >> 12u);
+-      if (v_curr == v_flush_prev) {
+-        v_flush_repeat_count += 1u;
+-      } else {
+-        v_flush_repeat_count = 1u;
++    if (self->private_impl.f_call_sequence == 32u) {
++    } else if (self->private_impl.f_call_sequence < 32u) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+       }
+-      v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[(((uint8_t)((v_block_checksum_have >> 24u))) ^ v_curr)] ^ ((uint32_t)(v_block_checksum_have << 8u)));
+-      (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_curr), iop_a_dst += 1);
+-      v_flush_prev = v_curr;
+-      v_block_size -= 1u;
+-    } else {
+-      v_entry = self->private_data.f_bwt[v_flush_pointer];
+-      v_curr = ((uint8_t)(v_entry));
+-      v_flush_pointer = (v_entry >> 12u);
+-      v_flush_repeat_count = ((uint32_t)(v_curr));
+-      while (v_flush_repeat_count > 0u) {
+-        v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[(((uint8_t)((v_block_checksum_have >> 24u))) ^ v_flush_prev)] ^ ((uint32_t)(v_block_checksum_have << 8u)));
+-        if (((uint64_t)(io2_a_dst - iop_a_dst)) > 0u) {
+-          (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_flush_prev), iop_a_dst += 1);
+-        }
+-        v_flush_repeat_count -= 1u;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      status = wuffs_bmp__decoder__do_decode_image_config(self, NULL, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
+       }
+-      v_flush_repeat_count = 0u;
+-      v_flush_prev = v_curr;
+-      v_block_size -= 1u;
++      if (status.repr) {
++        goto suspend;
++      }
++    } else if (self->private_impl.f_call_sequence == 40u) {
++      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
++        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
++        goto exit;
++      }
++    } else if (self->private_impl.f_call_sequence == 64u) {
++      self->private_impl.f_call_sequence = 96u;
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
++    } else {
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
+     }
++    if (a_dst != NULL) {
++      wuffs_base__frame_config__set(
++          a_dst,
++          wuffs_base__utility__make_rect_ie_u32(
++          0u,
++          0u,
++          self->private_impl.f_width,
++          self->private_impl.f_height),
++          ((wuffs_base__flicks)(0u)),
++          0u,
++          self->private_impl.f_frame_config_io_position,
++          0u,
++          true,
++          false,
++          4278190080u);
++    }
++    self->private_impl.f_call_sequence = 64u;
++
++    ok:
++    self->private_impl.p_do_decode_frame_config = 0;
++    goto exit;
+   }
+-  self->private_impl.f_flush_pointer = v_flush_pointer;
+-  self->private_impl.f_flush_repeat_count = v_flush_repeat_count;
+-  self->private_impl.f_flush_prev = v_flush_prev;
+-  self->private_impl.f_block_checksum_have = v_block_checksum_have;
+-  if (v_block_size <= 900000u) {
+-    self->private_impl.f_block_size = v_block_size;
+-  }
+-  if (a_dst && a_dst->data.ptr) {
+-    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+ 
+-  return wuffs_base__make_empty_struct();
++  return status;
+ }
+ 
+-// -------- func bzip2.decoder.flush_slow
++// -------- func bmp.decoder.decode_frame
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_bzip2__decoder__flush_slow(
+-    wuffs_bzip2__decoder* self,
+-    wuffs_base__io_buffer* a_dst) {
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_bmp__decoder__decode_frame(
++    wuffs_bmp__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_dst || !a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 3)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t v_flush_pointer = 0;
+-  uint32_t v_flush_repeat_count = 0;
+-  uint8_t v_flush_prev = 0;
+-  uint32_t v_block_checksum_have = 0;
+-  uint32_t v_block_size = 0;
+-  uint32_t v_entry = 0;
+-  uint8_t v_curr = 0;
+-
+-  uint8_t* iop_a_dst = NULL;
+-  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_dst && a_dst->data.ptr) {
+-    io0_a_dst = a_dst->data.ptr;
+-    io1_a_dst = io0_a_dst + a_dst->meta.wi;
+-    iop_a_dst = io1_a_dst;
+-    io2_a_dst = io0_a_dst + a_dst->data.len;
+-    if (a_dst->meta.closed) {
+-      io2_a_dst = iop_a_dst;
+-    }
+-  }
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_flush_slow[0];
+-  if (coro_susp_point) {
+-    v_flush_pointer = self->private_data.s_flush_slow[0].v_flush_pointer;
+-    v_flush_repeat_count = self->private_data.s_flush_slow[0].v_flush_repeat_count;
+-    v_flush_prev = self->private_data.s_flush_slow[0].v_flush_prev;
+-    v_block_checksum_have = self->private_data.s_flush_slow[0].v_block_checksum_have;
+-    v_block_size = self->private_data.s_flush_slow[0].v_block_size;
+-    v_curr = self->private_data.s_flush_slow[0].v_curr;
+-  }
++  uint32_t coro_susp_point = self->private_impl.p_decode_frame;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    v_flush_pointer = self->private_impl.f_flush_pointer;
+-    v_flush_repeat_count = self->private_impl.f_flush_repeat_count;
+-    v_flush_prev = self->private_impl.f_flush_prev;
+-    v_block_checksum_have = self->private_impl.f_block_checksum_have;
+-    v_block_size = self->private_impl.f_block_size;
+-    while ((v_block_size > 0u) &&  ! (self->private_impl.p_flush_slow[0] != 0)) {
+-      if (v_flush_repeat_count < 4u) {
+-        v_entry = self->private_data.f_bwt[v_flush_pointer];
+-        v_curr = ((uint8_t)(v_entry));
+-        v_flush_pointer = (v_entry >> 12u);
+-        if (v_curr == v_flush_prev) {
+-          v_flush_repeat_count += 1u;
+-        } else {
+-          v_flush_repeat_count = 1u;
+-        }
+-        v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[(((uint8_t)((v_block_checksum_have >> 24u))) ^ v_curr)] ^ ((uint32_t)(v_block_checksum_have << 8u)));
+-        self->private_data.s_flush_slow[0].scratch = v_curr;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-        if (iop_a_dst == io2_a_dst) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-          goto suspend;
+-        }
+-        *iop_a_dst++ = ((uint8_t)(self->private_data.s_flush_slow[0].scratch));
+-        v_flush_prev = v_curr;
+-        v_block_size -= 1u;
+-      } else {
+-        v_entry = self->private_data.f_bwt[v_flush_pointer];
+-        v_curr = ((uint8_t)(v_entry));
+-        v_flush_pointer = (v_entry >> 12u);
+-        v_flush_repeat_count = ((uint32_t)(v_curr));
+-        while (v_flush_repeat_count > 0u) {
+-          v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[(((uint8_t)((v_block_checksum_have >> 24u))) ^ v_flush_prev)] ^ ((uint32_t)(v_block_checksum_have << 8u)));
+-          self->private_data.s_flush_slow[0].scratch = v_flush_prev;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-          if (iop_a_dst == io2_a_dst) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-            goto suspend;
+-          }
+-          *iop_a_dst++ = ((uint8_t)(self->private_data.s_flush_slow[0].scratch));
+-          v_flush_repeat_count -= 1u;
+-        }
+-        v_flush_repeat_count = 0u;
+-        v_flush_prev = v_curr;
+-        v_block_size -= 1u;
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_bmp__decoder__do_decode_frame(self,
++            a_dst,
++            a_src,
++            a_blend,
++            a_workbuf,
++            a_opts);
++        v_status = t_0;
+       }
+-    }
+-    self->private_impl.f_flush_pointer = v_flush_pointer;
+-    self->private_impl.f_flush_repeat_count = v_flush_repeat_count;
+-    self->private_impl.f_flush_prev = v_flush_prev;
+-    self->private_impl.f_block_checksum_have = v_block_checksum_have;
+-    if (v_block_size <= 900000u) {
+-      self->private_impl.f_block_size = v_block_size;
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_bmp__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+     }
+ 
+-    goto ok;
+     ok:
+-    self->private_impl.p_flush_slow[0] = 0;
++    self->private_impl.p_decode_frame = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_flush_slow[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_flush_slow[0].v_flush_pointer = v_flush_pointer;
+-  self->private_data.s_flush_slow[0].v_flush_repeat_count = v_flush_repeat_count;
+-  self->private_data.s_flush_slow[0].v_flush_prev = v_flush_prev;
+-  self->private_data.s_flush_slow[0].v_block_checksum_have = v_block_checksum_have;
+-  self->private_data.s_flush_slow[0].v_block_size = v_block_size;
+-  self->private_data.s_flush_slow[0].v_curr = v_curr;
++  self->private_impl.p_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
+ 
+   goto exit;
+   exit:
+-  if (a_dst && a_dst->data.ptr) {
+-    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
+   }
+-
+   return status;
+ }
+ 
+-// -------- func bzip2.decoder.decode_huffman_fast
++// -------- func bmp.decoder.do_decode_frame
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_bzip2__decoder__decode_huffman_fast(
+-    wuffs_bzip2__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
++wuffs_bmp__decoder__do_decode_frame(
++    wuffs_bmp__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t v_bits = 0;
+-  uint32_t v_n_bits = 0;
+-  uint32_t v_block_size = 0;
+-  uint8_t v_which = 0;
+-  uint32_t v_ticks = 0;
+-  uint32_t v_section = 0;
+-  uint32_t v_run_shift = 0;
+-  uint16_t v_table_entry = 0;
+-  uint16_t v_child = 0;
+-  uint32_t v_child_ff = 0;
+-  uint32_t v_i = 0;
+-  uint32_t v_j = 0;
+-  uint32_t v_output = 0;
+-  uint32_t v_run = 0;
+-  uint32_t v_mtft0 = 0;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -31802,90 +32760,132 @@ wuffs_bzip2__decoder__decode_huffman_fast(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  v_bits = self->private_impl.f_bits;
+-  v_n_bits = self->private_impl.f_n_bits;
+-  v_block_size = self->private_impl.f_block_size;
+-  v_which = self->private_impl.f_decode_huffman_which;
+-  v_ticks = self->private_impl.f_decode_huffman_ticks;
+-  v_section = self->private_impl.f_decode_huffman_section;
+-  v_run_shift = self->private_impl.f_decode_huffman_run_shift;
+-  while (((uint64_t)(io2_a_src - iop_a_src)) >= 4u) {
+-    if (v_ticks > 0u) {
+-      v_ticks -= 1u;
+-    } else {
+-      v_ticks = 49u;
+-      v_section += 1u;
+-      if (v_section >= self->private_impl.f_num_sections) {
+-        status = wuffs_base__make_status(wuffs_bzip2__error__bad_number_of_sections);
+-        goto exit;
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_call_sequence == 64u) {
++    } else if (self->private_impl.f_call_sequence < 64u) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+       }
+-      v_which = WUFFS_BZIP2__CLAMP_TO_5[(self->private_data.f_huffman_selectors[(v_section & 32767u)] & 7u)];
+-    }
+-    v_bits |= (wuffs_base__peek_u32be__no_bounds_check(iop_a_src) >> v_n_bits);
+-    iop_a_src += ((31u - v_n_bits) >> 3u);
+-    v_n_bits |= 24u;
+-    v_table_entry = self->private_data.f_huffman_tables[v_which][(v_bits >> 24u)];
+-    v_bits <<= (v_table_entry >> 12u);
+-    v_n_bits -= ((uint32_t)((v_table_entry >> 12u)));
+-    v_child = (v_table_entry & 1023u);
+-    while (v_child < 257u) {
+-      v_child = self->private_data.f_huffman_trees[v_which][v_child][(v_bits >> 31u)];
+-      v_bits <<= 1u;
+-      if (v_n_bits <= 0u) {
+-        status = wuffs_base__make_status(wuffs_bzip2__error__internal_error_inconsistent_huffman_decoder_state);
+-        goto exit;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      status = wuffs_bmp__decoder__do_decode_frame_config(self, NULL, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
+       }
+-      v_n_bits -= 1u;
+-    }
+-    if (v_child < 768u) {
+-      v_child_ff = ((uint32_t)((v_child & 255u)));
+-      v_output = ((uint32_t)(self->private_data.f_mtft[v_child_ff]));
+-      wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_mtft, 1, (1u + v_child_ff)), wuffs_base__make_slice_u8(self->private_data.f_mtft, v_child_ff));
+-      self->private_data.f_mtft[0u] = ((uint8_t)(v_output));
+-      self->private_data.f_letter_counts[v_output] += 1u;
+-      self->private_data.f_bwt[v_block_size] = v_output;
+-      if (v_block_size >= self->private_impl.f_max_incl_block_size) {
+-        status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
+-        goto exit;
++      if (status.repr) {
++        goto suspend;
+       }
+-      v_block_size += 1u;
+-      v_run_shift = 0u;
+-      continue;
+-    } else if (v_child == 768u) {
+-      self->private_impl.f_decode_huffman_finished = true;
+-      break;
+-    }
+-    if (v_run_shift >= 23u) {
+-      status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
+-      goto exit;
++    } else {
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
+     }
+-    v_run = ((((uint32_t)(v_child)) & 3u) << v_run_shift);
+-    v_run_shift += 1u;
+-    v_i = v_block_size;
+-    v_j = (v_run + v_block_size);
+-    if (v_j > self->private_impl.f_max_incl_block_size) {
+-      status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
+-      goto exit;
++    self->private_data.s_do_decode_frame.scratch = self->private_impl.f_padding;
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++    if (self->private_data.s_do_decode_frame.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++      self->private_data.s_do_decode_frame.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++      iop_a_src = io2_a_src;
++      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++      goto suspend;
+     }
+-    v_block_size = v_j;
+-    v_mtft0 = ((uint32_t)(self->private_data.f_mtft[0u]));
+-    self->private_data.f_letter_counts[v_mtft0] += v_run;
+-    while (v_i < v_j) {
+-      self->private_data.f_bwt[v_i] = v_mtft0;
+-      v_i += 1u;
++    iop_a_src += self->private_data.s_do_decode_frame.scratch;
++    if ((self->private_impl.f_width > 0u) && (self->private_impl.f_height > 0u)) {
++      self->private_impl.f_dst_x = 0u;
++      if (self->private_impl.f_top_down) {
++        self->private_impl.f_dst_y = 0u;
++        self->private_impl.f_dst_y_inc = 1u;
++      } else {
++        self->private_impl.f_dst_y = ((uint32_t)(self->private_impl.f_height - 1u));
++        self->private_impl.f_dst_y_inc = 4294967295u;
++      }
++      v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
++          wuffs_base__pixel_buffer__pixel_format(a_dst),
++          wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048)),
++          wuffs_base__utility__make_pixel_format(self->private_impl.f_src_pixfmt),
++          wuffs_base__make_slice_u8(self->private_data.f_src_palette, 1024),
++          a_blend);
++      if ( ! wuffs_base__status__is_ok(&v_status)) {
++        status = v_status;
++        if (wuffs_base__status__is_error(&status)) {
++          goto exit;
++        } else if (wuffs_base__status__is_suspension(&status)) {
++          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++          goto exit;
++        }
++        goto ok;
++      }
++      while (true) {
++        if (self->private_impl.f_compression == 0u) {
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          v_status = wuffs_bmp__decoder__swizzle_none(self, a_dst, a_src);
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++        } else if (self->private_impl.f_compression < 3u) {
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          v_status = wuffs_bmp__decoder__swizzle_rle(self, a_dst, a_src);
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++        } else if (self->private_impl.f_compression == 3u) {
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          v_status = wuffs_bmp__decoder__swizzle_bitfields(self, a_dst, a_src);
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++        } else {
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          v_status = wuffs_bmp__decoder__swizzle_low_bit_depth(self, a_dst, a_src);
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++        }
++        if (wuffs_base__status__is_ok(&v_status)) {
++          break;
++        } else if (v_status.repr != wuffs_bmp__note__internal_note_short_read) {
++          status = v_status;
++          if (wuffs_base__status__is_error(&status)) {
++            goto exit;
++          } else if (wuffs_base__status__is_suspension(&status)) {
++            status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++            goto exit;
++          }
++          goto ok;
++        }
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
++      }
++      self->private_data.s_do_decode_frame.scratch = self->private_impl.f_pending_pad;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++      if (self->private_data.s_do_decode_frame.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++        self->private_data.s_do_decode_frame.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++        iop_a_src = io2_a_src;
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      iop_a_src += self->private_data.s_do_decode_frame.scratch;
++      self->private_impl.f_pending_pad = 0u;
+     }
++    self->private_impl.f_call_sequence = 96u;
++
++    ok:
++    self->private_impl.p_do_decode_frame = 0;
++    goto exit;
+   }
+-  self->private_impl.f_bits = v_bits;
+-  self->private_impl.f_n_bits = v_n_bits;
+-  self->private_impl.f_block_size = v_block_size;
+-  self->private_impl.f_decode_huffman_which = v_which;
+-  self->private_impl.f_decode_huffman_ticks = v_ticks;
+-  self->private_impl.f_decode_huffman_section = v_section;
+-  self->private_impl.f_decode_huffman_run_shift = v_run_shift;
+-  status = wuffs_base__make_status(NULL);
+-  goto ok;
+ 
+-  ok:
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
+   goto exit;
+   exit:
+   if (a_src && a_src->data.ptr) {
+@@ -31895,24 +32895,27 @@ wuffs_bzip2__decoder__decode_huffman_fast(
+   return status;
+ }
+ 
+-// -------- func bzip2.decoder.decode_huffman_slow
++// -------- func bmp.decoder.swizzle_none
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_bzip2__decoder__decode_huffman_slow(
+-    wuffs_bzip2__decoder* self,
++wuffs_bmp__decoder__swizzle_none(
++    wuffs_bmp__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
+     wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint8_t v_c = 0;
+-  uint32_t v_node_index = 0;
+-  uint16_t v_child = 0;
+-  uint32_t v_child_ff = 0;
+-  uint32_t v_i = 0;
+-  uint32_t v_j = 0;
+-  uint32_t v_output = 0;
+-  uint32_t v_run = 0;
+-  uint32_t v_mtft0 = 0;
++  wuffs_base__pixel_format v_dst_pixfmt = {0};
++  uint32_t v_dst_bits_per_pixel = 0;
++  uint32_t v_dst_bytes_per_pixel = 0;
++  uint64_t v_dst_bytes_per_row = 0;
++  uint32_t v_src_bytes_per_pixel = 0;
++  wuffs_base__slice_u8 v_dst_palette = {0};
++  wuffs_base__table_u8 v_tab = {0};
++  wuffs_base__slice_u8 v_dst = {0};
++  uint64_t v_i = 0;
++  uint64_t v_j = 0;
++  uint64_t v_n = 0;
+ 
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -31925,99 +32928,90 @@ wuffs_bzip2__decoder__decode_huffman_slow(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_huffman_slow[0];
+-  if (coro_susp_point) {
+-    v_node_index = self->private_data.s_decode_huffman_slow[0].v_node_index;
++  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
++  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
++  if ((v_dst_bits_per_pixel & 7u) != 0u) {
++    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
++    goto exit;
+   }
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    while ( ! (self->private_impl.p_decode_huffman_slow[0] != 0)) {
+-      if (self->private_impl.f_decode_huffman_ticks > 0u) {
+-        self->private_impl.f_decode_huffman_ticks -= 1u;
+-      } else {
+-        self->private_impl.f_decode_huffman_ticks = 49u;
+-        self->private_impl.f_decode_huffman_section += 1u;
+-        if (self->private_impl.f_decode_huffman_section >= self->private_impl.f_num_sections) {
+-          status = wuffs_base__make_status(wuffs_bzip2__error__bad_number_of_sections);
+-          goto exit;
+-        }
+-        self->private_impl.f_decode_huffman_which = WUFFS_BZIP2__CLAMP_TO_5[(self->private_data.f_huffman_selectors[(self->private_impl.f_decode_huffman_section & 32767u)] & 7u)];
++  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
++  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
++  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048));
++  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
++  label__outer__continue:;
++  while (true) {
++    while (self->private_impl.f_pending_pad > 0u) {
++      if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++        status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
++        goto ok;
+       }
+-      v_node_index = 0u;
+-      while (true) {
+-        if (self->private_impl.f_n_bits <= 0u) {
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint8_t t_0 = *iop_a_src++;
+-            v_c = t_0;
+-          }
+-          self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
+-          self->private_impl.f_n_bits = 8u;
+-        }
+-        v_child = self->private_data.f_huffman_trees[self->private_impl.f_decode_huffman_which][v_node_index][(self->private_impl.f_bits >> 31u)];
+-        self->private_impl.f_bits <<= 1u;
+-        self->private_impl.f_n_bits -= 1u;
+-        if (v_child < 257u) {
+-          v_node_index = ((uint32_t)(v_child));
+-          continue;
+-        } else if (v_child < 768u) {
+-          v_child_ff = ((uint32_t)((v_child & 255u)));
+-          v_output = ((uint32_t)(self->private_data.f_mtft[v_child_ff]));
+-          wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_mtft, 1, (1u + v_child_ff)), wuffs_base__make_slice_u8(self->private_data.f_mtft, v_child_ff));
+-          self->private_data.f_mtft[0u] = ((uint8_t)(v_output));
+-          self->private_data.f_letter_counts[v_output] += 1u;
+-          self->private_data.f_bwt[self->private_impl.f_block_size] = v_output;
+-          if (self->private_impl.f_block_size >= self->private_impl.f_max_incl_block_size) {
+-            status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
+-            goto exit;
++      self->private_impl.f_pending_pad -= 1u;
++      iop_a_src += 1u;
++    }
++    while (true) {
++      if (self->private_impl.f_dst_x == self->private_impl.f_width) {
++        self->private_impl.f_dst_x = 0u;
++        self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
++        if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
++          if (self->private_impl.f_height > 0u) {
++            self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row;
+           }
+-          self->private_impl.f_block_size += 1u;
+-          self->private_impl.f_decode_huffman_run_shift = 0u;
+-          break;
+-        } else if (v_child == 768u) {
+-          self->private_impl.f_decode_huffman_finished = true;
+           goto label__outer__break;
++        } else if (self->private_impl.f_pad_per_row != 0u) {
++          self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row;
++          goto label__outer__continue;
+         }
+-        if (self->private_impl.f_decode_huffman_run_shift >= 23u) {
+-          status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
++      }
++      v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
++      if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
++        v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
++      }
++      v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
++      if (v_i >= ((uint64_t)(v_dst.len))) {
++        if (self->private_impl.f_bits_per_pixel > 32u) {
++          status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
+           goto exit;
+         }
+-        v_run = ((((uint32_t)(v_child)) & 3u) << self->private_impl.f_decode_huffman_run_shift);
+-        self->private_impl.f_decode_huffman_run_shift += 1u;
+-        v_i = self->private_impl.f_block_size;
+-        v_j = (v_run + self->private_impl.f_block_size);
+-        if (v_j > self->private_impl.f_max_incl_block_size) {
+-          status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
++        v_src_bytes_per_pixel = (self->private_impl.f_bits_per_pixel / 8u);
++        if (v_src_bytes_per_pixel == 0u) {
++          status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
+           goto exit;
+         }
+-        self->private_impl.f_block_size = v_j;
+-        v_mtft0 = ((uint32_t)(self->private_data.f_mtft[0u]));
+-        self->private_data.f_letter_counts[v_mtft0] += v_run;
+-        while (v_i < v_j) {
+-          self->private_data.f_bwt[v_i] = v_mtft0;
+-          v_i += 1u;
++        v_n = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(v_src_bytes_per_pixel)));
++        v_n = wuffs_base__u64__min(v_n, ((uint64_t)(((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x)))));
++        v_j = v_n;
++        while (v_j >= 8u) {
++          if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 8u)))) {
++            iop_a_src += (v_src_bytes_per_pixel * 8u);
++          }
++          v_j -= 8u;
+         }
+-        break;
++        while (v_j > 0u) {
++          if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 1u)))) {
++            iop_a_src += (v_src_bytes_per_pixel * 1u);
++          }
++          v_j -= 1u;
++        }
++      } else {
++        v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
++            &self->private_impl.f_swizzler,
++            wuffs_base__slice_u8__subslice_i(v_dst, v_i),
++            v_dst_palette,
++            &iop_a_src,
++            io2_a_src);
++      }
++      if (v_n == 0u) {
++        status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
++        goto ok;
+       }
++      wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
+     }
+-    label__outer__break:;
+-
+-    goto ok;
+-    ok:
+-    self->private_impl.p_decode_huffman_slow[0] = 0;
+-    goto exit;
+   }
++  label__outer__break:;
++  status = wuffs_base__make_status(NULL);
++  goto ok;
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_huffman_slow[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_decode_huffman_slow[0].v_node_index = v_node_index;
+-
++  ok:
+   goto exit;
+   exit:
+   if (a_src && a_src->data.ptr) {
+@@ -32027,256 +33021,33 @@ wuffs_bzip2__decoder__decode_huffman_slow(
+   return status;
+ }
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BZIP2)
+-
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CBOR)
+-
+-// ---------------- Status Codes Implementations
+-
+-const char wuffs_cbor__error__bad_input[] = "#cbor: bad input";
+-const char wuffs_cbor__error__unsupported_recursion_depth[] = "#cbor: unsupported recursion depth";
+-const char wuffs_cbor__error__internal_error_inconsistent_i_o[] = "#cbor: internal error: inconsistent I/O";
+-const char wuffs_cbor__error__internal_error_inconsistent_token_length[] = "#cbor: internal error: inconsistent token length";
+-
+-// ---------------- Private Consts
+-
+-static const uint32_t
+-WUFFS_CBOR__LITERALS[4] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  8388612, 8388616, 8388610, 8388609,
+-};
+-
+-static const uint8_t
+-WUFFS_CBOR__TOKEN_LENGTHS[32] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  1, 1, 1, 1, 1, 1, 1, 1,
+-  1, 1, 1, 1, 1, 1, 1, 1,
+-  1, 1, 1, 1, 1, 1, 1, 1,
+-  2, 3, 5, 9, 0, 0, 0, 1,
+-};
+-
+-// ---------------- Private Initializer Prototypes
+-
+-// ---------------- Private Function Prototypes
+-
+-// ---------------- VTables
+-
+-const wuffs_base__token_decoder__func_ptrs
+-wuffs_cbor__decoder__func_ptrs_for__wuffs_base__token_decoder = {
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__token_buffer*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__slice_u8))(&wuffs_cbor__decoder__decode_tokens),
+-  (uint64_t(*)(const void*,
+-      uint32_t))(&wuffs_cbor__decoder__get_quirk),
+-  (uint64_t(*)(const void*))(&wuffs_cbor__decoder__history_retain_length),
+-  (wuffs_base__status(*)(void*,
+-      uint32_t,
+-      uint64_t))(&wuffs_cbor__decoder__set_quirk),
+-  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_cbor__decoder__workbuf_len),
+-};
+-
+-// ---------------- Initializer Implementations
+-
+-wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_cbor__decoder__initialize(
+-    wuffs_cbor__decoder* self,
+-    size_t sizeof_star_self,
+-    uint64_t wuffs_version,
+-    uint32_t options){
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (sizeof(*self) != sizeof_star_self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
+-  }
+-  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
+-      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
+-  }
+-
+-  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
+-    // The whole point of this if-check is to detect an uninitialized *self.
+-    // We disable the warning on GCC. Clang-5.0 does not have this warning.
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+-#endif
+-    if (self->private_impl.magic != 0) {
+-      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
+-    }
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-  } else {
+-    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
+-      memset(self, 0, sizeof(*self));
+-      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
+-    } else {
+-      memset(&(self->private_impl), 0, sizeof(self->private_impl));
+-    }
+-  }
+-
+-  self->private_impl.magic = WUFFS_BASE__MAGIC;
+-  self->private_impl.vtable_for__wuffs_base__token_decoder.vtable_name =
+-      wuffs_base__token_decoder__vtable_name;
+-  self->private_impl.vtable_for__wuffs_base__token_decoder.function_pointers =
+-      (const void*)(&wuffs_cbor__decoder__func_ptrs_for__wuffs_base__token_decoder);
+-  return wuffs_base__make_status(NULL);
+-}
+-
+-wuffs_cbor__decoder*
+-wuffs_cbor__decoder__alloc(void) {
+-  wuffs_cbor__decoder* x =
+-      (wuffs_cbor__decoder*)(calloc(sizeof(wuffs_cbor__decoder), 1));
+-  if (!x) {
+-    return NULL;
+-  }
+-  if (wuffs_cbor__decoder__initialize(
+-      x, sizeof(wuffs_cbor__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
+-    free(x);
+-    return NULL;
+-  }
+-  return x;
+-}
+-
+-size_t
+-sizeof__wuffs_cbor__decoder(void) {
+-  return sizeof(wuffs_cbor__decoder);
+-}
+-
+-// ---------------- Function Implementations
+-
+-// -------- func cbor.decoder.get_quirk
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_cbor__decoder__get_quirk(
+-    const wuffs_cbor__decoder* self,
+-    uint32_t a_key) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
+-
+-  return 0u;
+-}
+-
+-// -------- func cbor.decoder.set_quirk
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_cbor__decoder__set_quirk(
+-    wuffs_cbor__decoder* self,
+-    uint32_t a_key,
+-    uint64_t a_value) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-
+-  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
+-}
+-
+-// -------- func cbor.decoder.history_retain_length
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_cbor__decoder__history_retain_length(
+-    const wuffs_cbor__decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
+-
+-  return 0u;
+-}
+-
+-// -------- func cbor.decoder.workbuf_len
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_cbor__decoder__workbuf_len(
+-    const wuffs_cbor__decoder* self) {
+-  if (!self) {
+-    return wuffs_base__utility__empty_range_ii_u64();
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_range_ii_u64();
+-  }
+-
+-  return wuffs_base__utility__empty_range_ii_u64();
+-}
+-
+-// -------- func cbor.decoder.decode_tokens
++// -------- func bmp.decoder.swizzle_rle
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_cbor__decoder__decode_tokens(
+-    wuffs_cbor__decoder* self,
+-    wuffs_base__token_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__slice_u8 a_workbuf) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-  if (!a_dst || !a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 1)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+-  }
+-  self->private_impl.active_coroutine = 0;
++static wuffs_base__status
++wuffs_bmp__decoder__swizzle_rle(
++    wuffs_bmp__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint64_t v_string_length = 0;
+-  uint64_t v_n64 = 0;
+-  uint32_t v_depth = 0;
+-  uint32_t v_stack_byte = 0;
+-  uint32_t v_stack_bit = 0;
+-  uint32_t v_stack_val = 0;
+-  uint32_t v_token_length = 0;
+-  uint32_t v_vminor = 0;
+-  uint32_t v_vminor_alt = 0;
+-  uint32_t v_continued = 0;
+-  uint8_t v_c = 0;
+-  uint8_t v_c_major = 0;
+-  uint8_t v_c_minor = 0;
+-  bool v_tagged = false;
+-  uint8_t v_indefinite_string_major_type = 0;
++  wuffs_base__pixel_format v_dst_pixfmt = {0};
++  uint32_t v_dst_bits_per_pixel = 0;
++  uint32_t v_dst_bytes_per_pixel = 0;
++  uint64_t v_dst_bytes_per_row = 0;
++  wuffs_base__slice_u8 v_dst_palette = {0};
++  wuffs_base__table_u8 v_tab = {0};
++  wuffs_base__slice_u8 v_row = {0};
++  wuffs_base__slice_u8 v_dst = {0};
++  uint64_t v_i = 0;
++  uint64_t v_n = 0;
++  uint32_t v_p0 = 0;
++  uint8_t v_code = 0;
++  uint8_t v_indexes[2] = {0};
++  uint32_t v_rle_state = 0;
++  uint32_t v_chunk_bits = 0;
++  uint32_t v_chunk_count = 0;
+ 
+-  wuffs_base__token* iop_a_dst = NULL;
+-  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_dst && a_dst->data.ptr) {
+-    io0_a_dst = a_dst->data.ptr;
+-    io1_a_dst = io0_a_dst + a_dst->meta.wi;
+-    iop_a_dst = io1_a_dst;
+-    io2_a_dst = io0_a_dst + a_dst->data.len;
+-    if (a_dst->meta.closed) {
+-      io2_a_dst = iop_a_dst;
+-    }
+-  }
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -32288,1231 +33059,590 @@ wuffs_cbor__decoder__decode_tokens(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_tokens[0];
+-  if (coro_susp_point) {
+-    v_string_length = self->private_data.s_decode_tokens[0].v_string_length;
+-    v_depth = self->private_data.s_decode_tokens[0].v_depth;
+-    v_tagged = self->private_data.s_decode_tokens[0].v_tagged;
+-    v_indefinite_string_major_type = self->private_data.s_decode_tokens[0].v_indefinite_string_major_type;
++  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
++  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
++  if ((v_dst_bits_per_pixel & 7u) != 0u) {
++    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
++    goto exit;
+   }
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    if (self->private_impl.f_end_of_data) {
+-      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-      goto ok;
++  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
++  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
++  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048));
++  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
++  v_rle_state = self->private_impl.f_rle_state;
++  label__outer__continue:;
++  while (true) {
++    v_row = wuffs_private_impl__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
++    if (v_dst_bytes_per_row < ((uint64_t)(v_row.len))) {
++      v_row = wuffs_base__slice_u8__subslice_j(v_row, v_dst_bytes_per_row);
+     }
+-    label__outer__continue:;
++    label__middle__continue:;
+     while (true) {
++      v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
++      if (v_i <= ((uint64_t)(v_row.len))) {
++        v_dst = wuffs_base__slice_u8__subslice_i(v_row, v_i);
++      } else {
++        v_dst = wuffs_base__utility__empty_slice_u8();
++      }
+       while (true) {
+-        do {
+-          if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 1u) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+-            goto label__outer__continue;
++        if (v_rle_state == 0u) {
++          if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
++            break;
+           }
+-          if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-            if (a_src && a_src->meta.closed) {
+-              status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
++          v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++          iop_a_src += 1u;
++          if (v_code == 0u) {
++            v_rle_state = 2u;
++            continue;
++          }
++          self->private_impl.f_rle_length = ((uint32_t)(v_code));
++          v_rle_state = 1u;
++          continue;
++        } else if (v_rle_state == 1u) {
++          if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
++            break;
++          }
++          v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++          iop_a_src += 1u;
++          if (self->private_impl.f_bits_per_pixel == 8u) {
++            v_p0 = 0u;
++            while (v_p0 < self->private_impl.f_rle_length) {
++              self->private_data.f_scratch[v_p0] = v_code;
++              v_p0 += 1u;
++            }
++          } else {
++            v_indexes[0u] = ((uint8_t)(((uint8_t)(v_code >> 4u))));
++            v_indexes[1u] = ((uint8_t)(v_code & 15u));
++            v_p0 = 0u;
++            while (v_p0 < self->private_impl.f_rle_length) {
++              self->private_data.f_scratch[(v_p0 + 0u)] = v_indexes[0u];
++              self->private_data.f_scratch[(v_p0 + 1u)] = v_indexes[1u];
++              v_p0 += 2u;
++            }
++          }
++          wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, self->private_impl.f_rle_length));
++          wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_x, self->private_impl.f_rle_length);
++          v_rle_state = 0u;
++          goto label__middle__continue;
++        } else if (v_rle_state == 2u) {
++          if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
++            break;
++          }
++          v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++          iop_a_src += 1u;
++          if (v_code < 2u) {
++            if ((self->private_impl.f_dst_y >= self->private_impl.f_height) && (v_code == 0u)) {
++              status = wuffs_base__make_status(wuffs_bmp__error__bad_rle_compression);
+               goto exit;
+             }
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
++            wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_dst, v_dst_palette, 18446744073709551615u);
++            self->private_impl.f_dst_x = 0u;
++            self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
++            if (v_code > 0u) {
++              goto label__outer__break;
++            }
++            v_rle_state = 0u;
+             goto label__outer__continue;
++          } else if (v_code == 2u) {
++            v_rle_state = 4u;
++            continue;
+           }
+-          v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-          if ((v_indefinite_string_major_type != 0u) && (v_indefinite_string_major_type != (v_c >> 5u))) {
+-            if (v_c != 255u) {
+-              status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
+-              goto exit;
++          self->private_impl.f_rle_length = ((uint32_t)(v_code));
++          self->private_impl.f_rle_padded = ((self->private_impl.f_bits_per_pixel == 8u) && (((uint8_t)(v_code & 1u)) != 0u));
++          v_rle_state = 3u;
++          continue;
++        } else if (v_rle_state == 3u) {
++          if (self->private_impl.f_bits_per_pixel == 8u) {
++            v_n = wuffs_base__pixel_swizzler__limited_swizzle_u32_interleaved_from_reader(
++                &self->private_impl.f_swizzler,
++                self->private_impl.f_rle_length,
++                v_dst,
++                v_dst_palette,
++                &iop_a_src,
++                io2_a_src);
++            wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
++            wuffs_private_impl__u32__sat_sub_indirect(&self->private_impl.f_rle_length, ((uint32_t)(v_n)));
++          } else {
++            v_chunk_count = ((self->private_impl.f_rle_length + 3u) / 4u);
++            v_p0 = 0u;
++            while ((v_chunk_count > 0u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 2u)) {
++              v_chunk_bits = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
++              iop_a_src += 2u;
++              self->private_data.f_scratch[(v_p0 + 0u)] = ((uint8_t)((15u & (v_chunk_bits >> 12u))));
++              self->private_data.f_scratch[(v_p0 + 1u)] = ((uint8_t)((15u & (v_chunk_bits >> 8u))));
++              self->private_data.f_scratch[(v_p0 + 2u)] = ((uint8_t)((15u & (v_chunk_bits >> 4u))));
++              self->private_data.f_scratch[(v_p0 + 3u)] = ((uint8_t)((15u & (v_chunk_bits >> 0u))));
++              v_p0 = ((v_p0 & 255u) + 4u);
++              v_chunk_count -= 1u;
+             }
+-            v_vminor = 4194560u;
+-            if (v_indefinite_string_major_type == 3u) {
+-              v_vminor |= 19u;
++            v_p0 = wuffs_base__u32__min(v_p0, self->private_impl.f_rle_length);
++            wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, v_p0));
++            wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_x, v_p0);
++            wuffs_private_impl__u32__sat_sub_indirect(&self->private_impl.f_rle_length, v_p0);
++          }
++          if (self->private_impl.f_rle_length > 0u) {
++            break;
++          }
++          if (self->private_impl.f_rle_padded) {
++            if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
++              break;
+             }
+-            v_indefinite_string_major_type = 0u;
+             iop_a_src += 1u;
+-            *iop_a_dst++ = wuffs_base__make_token(
+-                (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-            goto label__goto_parsed_a_leaf_value__break;
++            self->private_impl.f_rle_padded = false;
++          }
++          v_rle_state = 0u;
++          goto label__middle__continue;
++        } else if (v_rle_state == 4u) {
++          if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
++            break;
+           }
++          self->private_impl.f_rle_delta_x = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+           iop_a_src += 1u;
+-          v_c_major = ((uint8_t)((v_c >> 5u)));
+-          v_c_minor = (v_c & 31u);
+-          if (v_c_minor < 24u) {
+-            v_string_length = ((uint64_t)(v_c_minor));
+-          } else {
+-            while (true) {
+-              if (v_c_minor == 24u) {
+-                if (((uint64_t)(io2_a_src - iop_a_src)) >= 1u) {
+-                  v_string_length = ((uint64_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src)));
+-                  iop_a_src += 1u;
+-                  break;
+-                }
+-              } else if (v_c_minor == 25u) {
+-                if (((uint64_t)(io2_a_src - iop_a_src)) >= 2u) {
+-                  v_string_length = ((uint64_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
+-                  iop_a_src += 2u;
+-                  break;
+-                }
+-              } else if (v_c_minor == 26u) {
+-                if (((uint64_t)(io2_a_src - iop_a_src)) >= 4u) {
+-                  v_string_length = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
+-                  iop_a_src += 4u;
+-                  break;
+-                }
+-              } else if (v_c_minor == 27u) {
+-                if (((uint64_t)(io2_a_src - iop_a_src)) >= 8u) {
+-                  v_string_length = wuffs_base__peek_u64be__no_bounds_check(iop_a_src);
+-                  iop_a_src += 8u;
+-                  break;
+-                }
+-              } else {
+-                v_string_length = 0u;
+-                break;
+-              }
+-              if (iop_a_src > io1_a_src) {
+-                iop_a_src--;
+-                if (a_src && a_src->meta.closed) {
+-                  status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
+-                  goto exit;
+-                }
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
+-                goto label__outer__continue;
+-              }
+-              status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_i_o);
+-              goto exit;
+-            }
++          v_rle_state = 5u;
++          continue;
++        }
++        if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
++          break;
++        }
++        v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++        iop_a_src += 1u;
++        if (self->private_impl.f_rle_delta_x > 0u) {
++          wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_dst, v_dst_palette, ((uint64_t)(self->private_impl.f_rle_delta_x)));
++          wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(self->private_impl.f_rle_delta_x)));
++          self->private_impl.f_rle_delta_x = 0u;
++          if (self->private_impl.f_dst_x > self->private_impl.f_width) {
++            status = wuffs_base__make_status(wuffs_bmp__error__bad_rle_compression);
++            goto exit;
+           }
+-          if (v_c_major == 0u) {
+-            if (v_c_minor < 26u) {
+-              *iop_a_dst++ = wuffs_base__make_token(
+-                  (((uint64_t)((14680064u | ((uint32_t)((v_string_length & 65535u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-              goto label__goto_parsed_a_leaf_value__break;
+-            } else if (v_c_minor < 28u) {
+-              *iop_a_dst++ = wuffs_base__make_token(
+-                  (((uint64_t)((14680064u | ((uint32_t)((v_string_length >> 46u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                  (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-              *iop_a_dst++ = wuffs_base__make_token(
+-                  (~(v_string_length & 70368744177663u) << WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT) |
+-                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-              goto label__goto_parsed_a_leaf_value__break;
+-            }
+-          } else if (v_c_major == 1u) {
+-            if (v_c_minor < 26u) {
+-              *iop_a_dst++ = wuffs_base__make_token(
+-                  (((uint64_t)((12582912u | (2097151u - ((uint32_t)((v_string_length & 65535u))))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-              goto label__goto_parsed_a_leaf_value__break;
+-            } else if (v_c_minor < 28u) {
+-              if (v_string_length < 9223372036854775808u) {
+-                *iop_a_dst++ = wuffs_base__make_token(
+-                    (((uint64_t)((12582912u | (2097151u - ((uint32_t)((v_string_length >> 46u))))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                    (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                    (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                *iop_a_dst++ = wuffs_base__make_token(
+-                    (~((18446744073709551615u - v_string_length) & 70368744177663u) << WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT) |
+-                    (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-              } else {
+-                *iop_a_dst++ = wuffs_base__make_token(
+-                    (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
+-                    (((uint64_t)(16777216u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                    (((uint64_t)(9u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-              }
+-              goto label__goto_parsed_a_leaf_value__break;
+-            }
+-          } else if (v_c_major == 2u) {
+-            if (v_c_minor < 28u) {
+-              if (v_string_length == 0u) {
+-                *iop_a_dst++ = wuffs_base__make_token(
+-                    (((uint64_t)(4194560u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                    (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                goto label__goto_parsed_a_leaf_value__break;
+-              }
+-              *iop_a_dst++ = wuffs_base__make_token(
+-                  (((uint64_t)(4194560u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-            } else if (v_c_minor == 31u) {
+-              if (v_indefinite_string_major_type != 0u) {
+-                break;
+-              }
+-              v_indefinite_string_major_type = 2u;
+-              *iop_a_dst++ = wuffs_base__make_token(
+-                  (((uint64_t)(4194560u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-              goto label__outer__continue;
+-            } else {
+-              break;
+-            }
+-            while (true) {
+-              if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
+-                continue;
+-              }
+-              v_n64 = wuffs_base__u64__min(v_string_length, ((uint64_t)(io2_a_src - iop_a_src)));
+-              v_token_length = ((uint32_t)((v_n64 & 65535u)));
+-              if (v_n64 > 65535u) {
+-                v_token_length = 65535u;
+-              } else if (v_token_length <= 0u) {
+-                if (a_src && a_src->meta.closed) {
+-                  status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
+-                  goto exit;
+-                }
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
+-                continue;
+-              }
+-              if (((uint64_t)(io2_a_src - iop_a_src)) < ((uint64_t)(v_token_length))) {
+-                status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_token_length);
+-                goto exit;
+-              }
+-              v_string_length -= ((uint64_t)(v_token_length));
+-              v_continued = 0u;
+-              if ((v_string_length > 0u) || (v_indefinite_string_major_type > 0u)) {
+-                v_continued = 1u;
+-              }
+-              iop_a_src += v_token_length;
+-              *iop_a_dst++ = wuffs_base__make_token(
+-                  (((uint64_t)(4194816u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                  (((uint64_t)(v_continued)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                  (((uint64_t)(v_token_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-              if (v_string_length > 0u) {
+-                continue;
+-              } else if (v_indefinite_string_major_type > 0u) {
+-                goto label__outer__continue;
+-              }
+-              goto label__goto_parsed_a_leaf_value__break;
+-            }
+-          } else if (v_c_major == 3u) {
+-            if (v_c_minor < 28u) {
+-              if (v_string_length == 0u) {
+-                *iop_a_dst++ = wuffs_base__make_token(
+-                    (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                    (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                goto label__goto_parsed_a_leaf_value__break;
+-              }
+-              *iop_a_dst++ = wuffs_base__make_token(
+-                  (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-            } else if (v_c_minor == 31u) {
+-              if (v_indefinite_string_major_type != 0u) {
+-                break;
+-              }
+-              v_indefinite_string_major_type = 3u;
+-              *iop_a_dst++ = wuffs_base__make_token(
+-                  (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-              goto label__outer__continue;
+-            } else {
+-              break;
+-            }
+-            while (true) {
+-              if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
+-                continue;
+-              }
+-              v_n64 = wuffs_base__u64__min(v_string_length, 65535u);
+-              v_n64 = ((uint64_t)(wuffs_base__utf_8__longest_valid_prefix(iop_a_src,
+-                  ((size_t)(wuffs_base__u64__min(((uint64_t)(io2_a_src - iop_a_src)), v_n64))))));
+-              v_token_length = ((uint32_t)((v_n64 & 65535u)));
+-              if (v_token_length <= 0u) {
+-                if ((a_src && a_src->meta.closed) || (((uint64_t)(io2_a_src - iop_a_src)) >= 4u)) {
+-                  status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
+-                  goto exit;
+-                }
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
+-                continue;
+-              }
+-              if (((uint64_t)(io2_a_src - iop_a_src)) < ((uint64_t)(v_token_length))) {
+-                status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_token_length);
+-                goto exit;
+-              }
+-              v_string_length -= ((uint64_t)(v_token_length));
+-              v_continued = 0u;
+-              if ((v_string_length > 0u) || (v_indefinite_string_major_type > 0u)) {
+-                v_continued = 1u;
+-              }
+-              iop_a_src += v_token_length;
+-              *iop_a_dst++ = wuffs_base__make_token(
+-                  (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                  (((uint64_t)(v_continued)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                  (((uint64_t)(v_token_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-              if (v_string_length > 0u) {
+-                continue;
+-              } else if (v_indefinite_string_major_type > 0u) {
+-                goto label__outer__continue;
+-              }
+-              goto label__goto_parsed_a_leaf_value__break;
+-            }
+-          } else if (v_c_major == 4u) {
+-            if (WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor] == 0u) {
+-              break;
+-            } else if (v_depth >= 1024u) {
+-              v_token_length = ((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor]));
+-              while ((v_token_length > 0u) && (iop_a_src > io1_a_src)) {
+-                iop_a_src--;
+-                v_token_length -= 1u;
+-              }
+-              status = wuffs_base__make_status(wuffs_cbor__error__unsupported_recursion_depth);
+-              goto exit;
+-            }
+-            v_vminor = 2105361u;
+-            v_vminor_alt = 2101282u;
+-            if (v_depth > 0u) {
+-              v_stack_byte = ((v_depth - 1u) / 16u);
+-              v_stack_bit = (((v_depth - 1u) & 15u) * 2u);
+-              if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
+-                v_vminor = 2105377u;
+-                v_vminor_alt = 2105378u;
+-              } else {
+-                v_vminor = 2105409u;
+-                v_vminor_alt = 2113570u;
+-              }
+-            }
+-            *iop_a_dst++ = wuffs_base__make_token(
+-                (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-            if (v_c_minor == 0u) {
+-              *iop_a_dst++ = wuffs_base__make_token(
+-                  (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                  (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-              goto label__goto_parsed_a_leaf_value__break;
+-            }
+-            v_stack_byte = (v_depth / 16u);
+-            v_stack_bit = ((v_depth & 15u) * 2u);
+-            self->private_data.f_stack[v_stack_byte] &= (4294967295u ^ (((uint32_t)(3u)) << v_stack_bit));
+-            self->private_data.f_container_num_remaining[v_depth] = v_string_length;
+-            v_depth += 1u;
+-            v_tagged = false;
+-            goto label__outer__continue;
+-          } else if (v_c_major == 5u) {
+-            if (WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor] == 0u) {
+-              break;
+-            } else if (v_depth >= 1024u) {
+-              v_token_length = ((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor]));
+-              while ((v_token_length > 0u) && (iop_a_src > io1_a_src)) {
+-                iop_a_src--;
+-                v_token_length -= 1u;
+-              }
+-              status = wuffs_base__make_status(wuffs_cbor__error__unsupported_recursion_depth);
++        }
++        if (v_code > 0u) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++          v_code -= 1u;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++          while (true) {
++            self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
++            if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
++              status = wuffs_base__make_status(wuffs_bmp__error__bad_rle_compression);
+               goto exit;
+             }
+-            v_vminor = 2113553u;
+-            v_vminor_alt = 2101314u;
+-            if (v_depth > 0u) {
+-              v_stack_byte = ((v_depth - 1u) / 16u);
+-              v_stack_bit = (((v_depth - 1u) & 15u) * 2u);
+-              if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
+-                v_vminor = 2113569u;
+-                v_vminor_alt = 2105410u;
+-              } else {
+-                v_vminor = 2113601u;
+-                v_vminor_alt = 2113602u;
+-              }
+-            }
+-            *iop_a_dst++ = wuffs_base__make_token(
+-                (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-            if (v_c_minor == 0u) {
+-              *iop_a_dst++ = wuffs_base__make_token(
+-                  (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                  (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-              goto label__goto_parsed_a_leaf_value__break;
++            v_row = wuffs_private_impl__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
++            if (v_dst_bytes_per_row < ((uint64_t)(v_row.len))) {
++              v_row = wuffs_base__slice_u8__subslice_j(v_row, v_dst_bytes_per_row);
+             }
+-            v_stack_byte = (v_depth / 16u);
+-            v_stack_bit = ((v_depth & 15u) * 2u);
+-            self->private_data.f_stack[v_stack_byte] |= (((uint32_t)(3u)) << v_stack_bit);
+-            self->private_data.f_container_num_remaining[v_depth] = v_string_length;
+-            v_depth += 1u;
+-            v_tagged = false;
+-            goto label__outer__continue;
+-          } else if (v_c_major == 6u) {
+-            if (v_c_minor >= 28u) {
++            if (v_code <= 0u) {
++              wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_row, v_dst_palette, ((uint64_t)(self->private_impl.f_dst_x)));
+               break;
+             }
+-            if (v_string_length < 262144u) {
+-              *iop_a_dst++ = wuffs_base__make_token(
+-                  (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
+-                  (((uint64_t)((4194304u | ((uint32_t)(v_string_length))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-            } else {
+-              *iop_a_dst++ = wuffs_base__make_token(
+-                  (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
+-                  (((uint64_t)((4194304u | ((uint32_t)((v_string_length >> 46u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                  (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-              *iop_a_dst++ = wuffs_base__make_token(
+-                  (~(v_string_length & 70368744177663u) << WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT) |
+-                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-            }
+-            v_tagged = true;
+-            goto label__outer__continue;
+-          } else if (v_c_major == 7u) {
+-            if (v_c_minor < 20u) {
+-              *iop_a_dst++ = wuffs_base__make_token(
+-                  (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
+-                  (((uint64_t)((8388608u | ((uint32_t)((v_string_length & 255u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-              goto label__goto_parsed_a_leaf_value__break;
+-            } else if (v_c_minor < 24u) {
+-              *iop_a_dst++ = wuffs_base__make_token(
+-                  (((uint64_t)(WUFFS_CBOR__LITERALS[(v_c_minor & 3u)])) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-              goto label__goto_parsed_a_leaf_value__break;
+-            } else if (v_c_minor == 24u) {
+-              if (v_string_length < 24u) {
+-                if ( ! (iop_a_src > io1_a_src)) {
+-                  status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_i_o);
+-                  goto exit;
+-                }
+-                iop_a_src--;
+-                break;
+-              }
+-              *iop_a_dst++ = wuffs_base__make_token(
+-                  (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
+-                  (((uint64_t)((8388608u | ((uint32_t)((v_string_length & 255u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                  (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-              goto label__goto_parsed_a_leaf_value__break;
+-            } else if (v_c_minor < 28u) {
+-              *iop_a_dst++ = wuffs_base__make_token(
+-                  (((uint64_t)(10490113u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-              goto label__goto_parsed_a_leaf_value__break;
+-            } else if (v_c_minor == 31u) {
+-              if (v_tagged || (v_depth <= 0u)) {
+-                break;
+-              }
+-              v_depth -= 1u;
+-              if (self->private_data.f_container_num_remaining[v_depth] != 0u) {
+-                break;
+-              }
+-              v_stack_byte = (v_depth / 16u);
+-              v_stack_bit = ((v_depth & 15u) * 2u);
+-              v_stack_val = (3u & (self->private_data.f_stack[v_stack_byte] >> v_stack_bit));
+-              if (v_stack_val == 1u) {
+-                break;
+-              }
+-              if (v_stack_val != 3u) {
+-                v_vminor_alt = 2097186u;
+-              } else {
+-                v_vminor_alt = 2097218u;
+-              }
+-              if (v_depth <= 0u) {
+-                v_vminor_alt |= 4096u;
+-              } else {
+-                v_stack_byte = ((v_depth - 1u) / 16u);
+-                v_stack_bit = (((v_depth - 1u) & 15u) * 2u);
+-                if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
+-                  v_vminor_alt |= 8192u;
+-                } else {
+-                  v_vminor_alt |= 16384u;
+-                }
+-              }
+-              *iop_a_dst++ = wuffs_base__make_token(
+-                  (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-              goto label__goto_parsed_a_leaf_value__break;
+-            }
+-          }
+-        } while (0);
+-        if (iop_a_src > io1_a_src) {
+-          iop_a_src--;
+-          status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
+-          goto exit;
+-        }
+-        status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_i_o);
+-        goto exit;
+-      }
+-      label__goto_parsed_a_leaf_value__break:;
+-      v_tagged = false;
+-      while (v_depth > 0u) {
+-        v_stack_byte = ((v_depth - 1u) / 16u);
+-        v_stack_bit = (((v_depth - 1u) & 15u) * 2u);
+-        self->private_data.f_stack[v_stack_byte] ^= (((uint32_t)(1u)) << (v_stack_bit + 1u));
+-        if (1u == (3u & (self->private_data.f_stack[v_stack_byte] >> v_stack_bit))) {
+-          goto label__outer__continue;
+-        }
+-        if (self->private_data.f_container_num_remaining[(v_depth - 1u)] <= 0u) {
+-          goto label__outer__continue;
+-        }
+-        self->private_data.f_container_num_remaining[(v_depth - 1u)] -= 1u;
+-        if (self->private_data.f_container_num_remaining[(v_depth - 1u)] > 0u) {
+-          goto label__outer__continue;
+-        }
+-        while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
+-          continue;
+-        }
+-        v_depth -= 1u;
+-        v_stack_byte = (v_depth / 16u);
+-        v_stack_bit = ((v_depth & 15u) * 2u);
+-        if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
+-          v_vminor_alt = 2097186u;
+-        } else {
+-          v_vminor_alt = 2097218u;
+-        }
+-        if (v_depth <= 0u) {
+-          v_vminor_alt |= 4096u;
+-        } else {
+-          v_stack_byte = ((v_depth - 1u) / 16u);
+-          v_stack_bit = (((v_depth - 1u) & 15u) * 2u);
+-          if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
+-            v_vminor_alt |= 8192u;
+-          } else {
+-            v_vminor_alt |= 16384u;
++            wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_row, v_dst_palette, 18446744073709551615u);
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++            v_code -= 1u;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
+           }
+         }
+-        *iop_a_dst++ = wuffs_base__make_token(
+-            (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-            (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++        v_rle_state = 0u;
++        goto label__middle__continue;
+       }
+-      break;
++      self->private_impl.f_rle_state = v_rle_state;
++      status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
++      goto ok;
+     }
+-    self->private_impl.f_end_of_data = true;
+-
+-    ok:
+-    self->private_impl.p_decode_tokens[0] = 0;
+-    goto exit;
+   }
++  label__outer__break:;
++  while (self->private_impl.f_dst_y < self->private_impl.f_height) {
++    v_row = wuffs_private_impl__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
++    if (v_dst_bytes_per_row < ((uint64_t)(v_row.len))) {
++      v_row = wuffs_base__slice_u8__subslice_j(v_row, v_dst_bytes_per_row);
++    }
++    wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_row, v_dst_palette, 18446744073709551615u);
++    self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
++  }
++  status = wuffs_base__make_status(NULL);
++  goto ok;
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_tokens[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
+-  self->private_data.s_decode_tokens[0].v_string_length = v_string_length;
+-  self->private_data.s_decode_tokens[0].v_depth = v_depth;
+-  self->private_data.s_decode_tokens[0].v_tagged = v_tagged;
+-  self->private_data.s_decode_tokens[0].v_indefinite_string_major_type = v_indefinite_string_major_type;
+-
++  ok:
+   goto exit;
+   exit:
+-  if (a_dst && a_dst->data.ptr) {
+-    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-  }
+   if (a_src && a_src->data.ptr) {
+     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+ 
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-  }
+   return status;
+ }
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CBOR)
+-
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC32)
++// -------- func bmp.decoder.swizzle_bitfields
+ 
+-// ---------------- Status Codes Implementations
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_bmp__decoder__swizzle_bitfields(
++    wuffs_bmp__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-// ---------------- Private Consts
++  wuffs_base__pixel_format v_dst_pixfmt = {0};
++  uint32_t v_dst_bits_per_pixel = 0;
++  uint32_t v_dst_bytes_per_pixel = 0;
++  uint64_t v_dst_bytes_per_row = 0;
++  wuffs_base__slice_u8 v_dst_palette = {0};
++  wuffs_base__table_u8 v_tab = {0};
++  wuffs_base__slice_u8 v_dst = {0};
++  uint64_t v_i = 0;
++  uint64_t v_n = 0;
++  uint32_t v_p0 = 0;
++  uint32_t v_p1 = 0;
++  uint32_t v_p1_temp = 0;
++  uint32_t v_num_bits = 0;
++  uint32_t v_c = 0;
++  uint32_t v_c32 = 0;
++  uint32_t v_channel = 0;
+ 
+-static const uint32_t
+-WUFFS_CRC32__IEEE_TABLE[16][256] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  {
+-    0, 1996959894, 3993919788, 2567524794, 124634137, 1886057615, 3915621685, 2657392035,
+-    249268274, 2044508324, 3772115230, 2547177864, 162941995, 2125561021, 3887607047, 2428444049,
+-    498536548, 1789927666, 4089016648, 2227061214, 450548861, 1843258603, 4107580753, 2211677639,
+-    325883990, 1684777152, 4251122042, 2321926636, 335633487, 1661365465, 4195302755, 2366115317,
+-    997073096, 1281953886, 3579855332, 2724688242, 1006888145, 1258607687, 3524101629, 2768942443,
+-    901097722, 1119000684, 3686517206, 2898065728, 853044451, 1172266101, 3705015759, 2882616665,
+-    651767980, 1373503546, 3369554304, 3218104598, 565507253, 1454621731, 3485111705, 3099436303,
+-    671266974, 1594198024, 3322730930, 2970347812, 795835527, 1483230225, 3244367275, 3060149565,
+-    1994146192, 31158534, 2563907772, 4023717930, 1907459465, 112637215, 2680153253, 3904427059,
+-    2013776290, 251722036, 2517215374, 3775830040, 2137656763, 141376813, 2439277719, 3865271297,
+-    1802195444, 476864866, 2238001368, 4066508878, 1812370925, 453092731, 2181625025, 4111451223,
+-    1706088902, 314042704, 2344532202, 4240017532, 1658658271, 366619977, 2362670323, 4224994405,
+-    1303535960, 984961486, 2747007092, 3569037538, 1256170817, 1037604311, 2765210733, 3554079995,
+-    1131014506, 879679996, 2909243462, 3663771856, 1141124467, 855842277, 2852801631, 3708648649,
+-    1342533948, 654459306, 3188396048, 3373015174, 1466479909, 544179635, 3110523913, 3462522015,
+-    1591671054, 702138776, 2966460450, 3352799412, 1504918807, 783551873, 3082640443, 3233442989,
+-    3988292384, 2596254646, 62317068, 1957810842, 3939845945, 2647816111, 81470997, 1943803523,
+-    3814918930, 2489596804, 225274430, 2053790376, 3826175755, 2466906013, 167816743, 2097651377,
+-    4027552580, 2265490386, 503444072, 1762050814, 4150417245, 2154129355, 426522225, 1852507879,
+-    4275313526, 2312317920, 282753626, 1742555852, 4189708143, 2394877945, 397917763, 1622183637,
+-    3604390888, 2714866558, 953729732, 1340076626, 3518719985, 2797360999, 1068828381, 1219638859,
+-    3624741850, 2936675148, 906185462, 1090812512, 3747672003, 2825379669, 829329135, 1181335161,
+-    3412177804, 3160834842, 628085408, 1382605366, 3423369109, 3138078467, 570562233, 1426400815,
+-    3317316542, 2998733608, 733239954, 1555261956, 3268935591, 3050360625, 752459403, 1541320221,
+-    2607071920, 3965973030, 1969922972, 40735498, 2617837225, 3943577151, 1913087877, 83908371,
+-    2512341634, 3803740692, 2075208622, 213261112, 2463272603, 3855990285, 2094854071, 198958881,
+-    2262029012, 4057260610, 1759359992, 534414190, 2176718541, 4139329115, 1873836001, 414664567,
+-    2282248934, 4279200368, 1711684554, 285281116, 2405801727, 4167216745, 1634467795, 376229701,
+-    2685067896, 3608007406, 1308918612, 956543938, 2808555105, 3495958263, 1231636301, 1047427035,
+-    2932959818, 3654703836, 1088359270, 936918000, 2847714899, 3736837829, 1202900863, 817233897,
+-    3183342108, 3401237130, 1404277552, 615818150, 3134207493, 3453421203, 1423857449, 601450431,
+-    3009837614, 3294710456, 1567103746, 711928724, 3020668471, 3272380065, 1510334235, 755167117,
+-  }, {
+-    0, 421212481, 842424962, 724390851, 1684849924, 2105013317, 1448781702, 1329698503,
+-    3369699848, 3519200073, 4210026634, 3824474571, 2897563404, 3048111693, 2659397006, 2274893007,
+-    1254232657, 1406739216, 2029285587, 1643069842, 783210325, 934667796, 479770071, 92505238,
+-    2182846553, 2600511768, 2955803355, 2838940570, 3866582365, 4285295644, 3561045983, 3445231262,
+-    2508465314, 2359236067, 2813478432, 3198777185, 4058571174, 3908292839, 3286139684, 3670389349,
+-    1566420650, 1145479147, 1869335592, 1987116393, 959540142, 539646703, 185010476, 303839341,
+-    3745920755, 3327985586, 3983561841, 4100678960, 3140154359, 2721170102, 2300350837, 2416418868,
+-    396344571, 243568058, 631889529, 1018359608, 1945336319, 1793607870, 1103436669, 1490954812,
+-    4034481925, 3915546180, 3259968903, 3679722694, 2484439553, 2366552896, 2787371139, 3208174018,
+-    950060301, 565965900, 177645455, 328046286, 1556873225, 1171730760, 1861902987, 2011255754,
+-    3132841300, 2745199637, 2290958294, 2442530455, 3738671184, 3352078609, 3974232786, 4126854035,
+-    1919080284, 1803150877, 1079293406, 1498383519, 370020952, 253043481, 607678682, 1025720731,
+-    1711106983, 2095471334, 1472923941, 1322268772, 26324643, 411738082, 866634785, 717028704,
+-    2904875439, 3024081134, 2668790573, 2248782444, 3376948395, 3495106026, 4219356713, 3798300520,
+-    792689142, 908347575, 487136116, 68299317, 1263779058, 1380486579, 2036719216, 1618931505,
+-    3890672638, 4278043327, 3587215740, 3435896893, 2206873338, 2593195963, 2981909624, 2829542713,
+-    998479947, 580430090, 162921161, 279890824, 1609522511, 1190423566, 1842954189, 1958874764,
+-    4082766403, 3930137346, 3245109441, 3631694208, 2536953671, 2385372678, 2768287173, 3155920004,
+-    1900120602, 1750776667, 1131931800, 1517083097, 355290910, 204897887, 656092572, 1040194781,
+-    3113746450, 2692952403, 2343461520, 2461357009, 3723805974, 3304059991, 4022511508, 4141455061,
+-    2919742697, 3072101800, 2620513899, 2234183466, 3396041197, 3547351212, 4166851439, 3779471918,
+-    1725839073, 2143618976, 1424512099, 1307796770, 45282277, 464110244, 813994343, 698327078,
+-    3838160568, 4259225593, 3606301754, 3488152955, 2158586812, 2578602749, 2996767038, 2877569151,
+-    740041904, 889656817, 506086962, 120682355, 1215357364, 1366020341, 2051441462, 1667084919,
+-    3422213966, 3538019855, 4190942668, 3772220557, 2945847882, 3062702859, 2644537544, 2226864521,
+-    52649286, 439905287, 823476164, 672009861, 1733269570, 2119477507, 1434057408, 1281543041,
+-    2167981343, 2552493150, 3004082077, 2853541596, 3847487515, 4233048410, 3613549209, 3464057816,
+-    1239502615, 1358593622, 2077699477, 1657543892, 764250643, 882293586, 532408465, 111204816,
+-    1585378284, 1197851309, 1816695150, 1968414767, 974272232, 587794345, 136598634, 289367339,
+-    2527558116, 2411481253, 2760973158, 3179948583, 4073438432, 3956313505, 3237863010, 3655790371,
+-    347922877, 229101820, 646611775, 1066513022, 1892689081, 1774917112, 1122387515, 1543337850,
+-    3697634229, 3313392372, 3998419255, 4148705398, 3087642289, 2702352368, 2319436851, 2468674930,
+-  }, {
+-    0, 29518391, 59036782, 38190681, 118073564, 114017003, 76381362, 89069189,
+-    236147128, 265370511, 228034006, 206958561, 152762724, 148411219, 178138378, 190596925,
+-    472294256, 501532999, 530741022, 509615401, 456068012, 451764635, 413917122, 426358261,
+-    305525448, 334993663, 296822438, 275991697, 356276756, 352202787, 381193850, 393929805,
+-    944588512, 965684439, 1003065998, 973863097, 1061482044, 1049003019, 1019230802, 1023561829,
+-    912136024, 933002607, 903529270, 874031361, 827834244, 815125939, 852716522, 856752605,
+-    611050896, 631869351, 669987326, 640506825, 593644876, 580921211, 551983394, 556069653,
+-    712553512, 733666847, 704405574, 675154545, 762387700, 749958851, 787859610, 792175277,
+-    1889177024, 1901651959, 1931368878, 1927033753, 2006131996, 1985040171, 1947726194, 1976933189,
+-    2122964088, 2135668303, 2098006038, 2093965857, 2038461604, 2017599123, 2047123658, 2076625661,
+-    1824272048, 1836991623, 1866005214, 1861914857, 1807058540, 1786244187, 1748062722, 1777547317,
+-    1655668488, 1668093247, 1630251878, 1625932113, 1705433044, 1684323811, 1713505210, 1742760333,
+-    1222101792, 1226154263, 1263738702, 1251046777, 1339974652, 1310460363, 1281013650, 1301863845,
+-    1187289752, 1191637167, 1161842422, 1149379777, 1103966788, 1074747507, 1112139306, 1133218845,
+-    1425107024, 1429406311, 1467333694, 1454888457, 1408811148, 1379576507, 1350309090, 1371438805,
+-    1524775400, 1528845279, 1499917702, 1487177649, 1575719220, 1546255107, 1584350554, 1605185389,
+-    3778354048, 3774312887, 3803303918, 3816007129, 3862737756, 3892238699, 3854067506, 3833203973,
+-    4012263992, 4007927823, 3970080342, 3982554209, 3895452388, 3924658387, 3953866378, 3932773565,
+-    4245928176, 4241609415, 4271336606, 4283762345, 4196012076, 4225268251, 4187931714, 4166823541,
+-    4076923208, 4072833919, 4035198246, 4047918865, 4094247316, 4123732899, 4153251322, 4132437965,
+-    3648544096, 3636082519, 3673983246, 3678331705, 3732010428, 3753090955, 3723829714, 3694611429,
+-    3614117080, 3601426159, 3572488374, 3576541825, 3496125444, 3516976691, 3555094634, 3525581405,
+-    3311336976, 3298595879, 3336186494, 3340255305, 3260503756, 3281337595, 3251864226, 3222399125,
+-    3410866088, 3398419871, 3368647622, 3372945905, 3427010420, 3448139075, 3485520666, 3456284973,
+-    2444203584, 2423127159, 2452308526, 2481530905, 2527477404, 2539934891, 2502093554, 2497740997,
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+-    0, 3120290792, 2827399569, 293431929, 2323408227, 864534155, 586863858, 2600537882,
+-    3481914503, 1987188591, 1729068310, 3740575486, 1173727716, 4228805132, 3983743093, 1418249117,
+-    1147313999, 4254680231, 3974377182, 1428157750, 3458136620, 2011505092, 1721256893, 3747844181,
+-    2347455432, 839944224, 594403929, 2593536433, 26687147, 3094146371, 2836498234, 283794642,
+-    2294627998, 826205558, 541298447, 2578994407, 45702141, 3141697557, 2856315500, 331624836,
+-    1196225049, 4273416689, 4023010184, 1446090848, 3442513786, 1959480466, 1706436331, 3696098563,
+-    3433538001, 1968994873, 1679888448, 3722103720, 1188807858, 4280295258, 3999102243, 1470541515,
+-    53374294, 3134568126, 2879970503, 307431215, 2303854645, 816436189, 567589284, 2553242188,
+-    3405478781, 1929420949, 1652411116, 3682996484, 1082596894, 4185703926, 3892424591, 1375368295,
+-    91404282, 3163122706, 2918450795, 336584067, 2400113305, 922028401, 663249672, 2658384096,
+-    2392450098, 929185754, 639587747, 2682555979, 82149713, 3172883129, 2892181696, 362343208,
+-    1091578037, 4176212829, 3918960932, 1349337804, 3412872662, 1922537022, 1676344391, 3658557359,
+-    1111377379, 4224032267, 3937989746, 1396912026, 3359776896, 1908013928, 1623494929, 3644803833,
+-    2377615716, 877417100, 623982837, 2630542109, 130804743, 3190831087, 2941083030, 381060734,
+-    106748588, 3215393092, 2933549885, 388083925, 2350956495, 903570471, 614862430, 2640172470,
+-    3386185259, 1882115523, 1632872378, 3634920530, 1135178568, 4199721120, 3945775833, 1389631793,
+-    1317531835, 4152109907, 3858841898, 1610259138, 3304822232, 2097172016, 1820140617, 3582394273,
+-    2165193788, 955639764, 696815021, 2423477829, 192043359, 2995356343, 2750736590, 437203750,
+-    182808564, 3005133852, 2724453989, 462947725, 2157513367, 962777471, 673168134, 2447663342,
+-    3312231283, 2090301595, 1844056802, 3557935370, 1326499344, 4142603768, 3885397889, 1584245865,
+-    3326266917, 2142836173, 1858371508, 3611272284, 1279175494, 4123357358, 3837270743, 1564721471,
+-    164299426, 2955991370, 2706223923, 414607579, 2209834945, 978107433, 724686416, 2462715320,
+-    2183156074, 1004243586, 715579643, 2472360723, 140260361, 2980573153, 2698675608, 421617264,
+-    1302961645, 4099032581, 3845074044, 1557460884, 3352688782, 2116952934, 1867729183, 3601371895,
+-    2222754758, 1032278062, 754596439, 2499928511, 234942117, 3086693709, 2793824052, 528319708,
+-    1274365761, 4061043881, 3816027856, 1518873912, 3246989858, 2020800970, 1762628531, 3505670235,
+-    3223196809, 2045103969, 1754834200, 3512958704, 1247965674, 4086934018, 3806642299, 1528765331,
+-    261609486, 3060532198, 2802936223, 518697591, 2246819181, 1007707781, 762121468, 2492913428,
+-    213497176, 3041029808, 2755593417, 499441441, 2261110843, 1061030867, 776167850, 2545465922,
+-    3274734047, 2060165687, 1807140942, 3528266662, 1229724860, 4038575956, 3788156205, 1479636677,
+-    1222322711, 4045468159, 3764231046, 1504067694, 3265744756, 2069664924, 1780612837, 3554288909,
+-    2270357136, 1051278712, 802445057, 2519698665, 221152243, 3033880603, 2779263586, 475261322,
+-  }, {
+-    0, 2926088593, 2275419491, 701019378, 3560000647, 2052709654, 1402038756, 4261017717,
+-    1930665807, 3715829470, 4105419308, 1524313021, 2804077512, 155861593, 545453739, 2397726522,
+-    3861331614, 1213181711, 1636244477, 3488582252, 840331801, 2625561480, 3048626042, 467584747,
+-    2503254481, 995897408, 311723186, 3170637091, 1090907478, 4016929991, 3332753461, 1758288292,
+-    390036349, 3109546732, 2426363422, 1056427919, 3272488954, 1835443819, 1152258713, 3938878216,
+-    1680663602, 3393484195, 3817652561, 1306808512, 2954733749, 510998820, 935169494, 2580880455,
+-    4044899811, 1601229938, 1991794816, 3637571857, 623446372, 2336332021, 2726898695, 216120726,
+-    2181814956, 744704829, 95158223, 2881711710, 1446680107, 4166125498, 3516576584, 2146575065,
+-    780072698, 2148951915, 2849952665, 129384968, 4199529085, 1411853292, 2112855838, 3548843663,
+-    1567451573, 4077254692, 3670887638, 1957027143, 2304517426, 657765539, 251396177, 2694091200,
+-    3361327204, 1714510325, 1341779207, 3784408214, 476611811, 2986349938, 2613617024, 899690513,
+-    3142211371, 354600634, 1021997640, 2458051545, 1870338988, 3239283261, 3906682575, 1186180958,
+-    960597383, 2536053782, 3202459876, 277428597, 3983589632, 1125666961, 1792074851, 3300423154,
+-    1246892744, 3829039961, 3455203243, 1671079482, 2657312335, 806080478, 432241452, 3081497277,
+-    3748049689, 1896751752, 1489409658, 4138600427, 190316446, 2772397583, 2365053693, 580864876,
+-    2893360214, 35503559, 735381813, 2243795108, 2017747153, 3593269568, 4293150130, 1368183843,
+-    1560145396, 4069882981, 3680356503, 1966430470, 2295112051, 648294626, 258769936, 2701399425,
+-    804156091, 2173100842, 2823706584, 103204425, 4225711676, 1438101421, 2088704863, 3524758222,
+-    3134903146, 347226875, 1031468553, 2467456920, 1860935661, 3229814396, 3914054286, 1193487135,
+-    3385412645, 1738661300, 1315531078, 3758225623, 502792354, 3012596019, 2589468097, 875607120,
+-    1271043721, 3853125400, 3429020650, 1644831355, 2683558414, 832261023, 408158061, 3057348348,
+-    953223622, 2528745559, 3211865253, 286899508, 3974120769, 1116263632, 1799381026, 3307794867,
+-    2917509143, 59586950, 709201268, 2217549029, 2043995280, 3619452161, 4269064691, 1344032866,
+-    3740677976, 1889445577, 1498812987, 4148069290, 180845535, 2762992206, 2372361916, 588238637,
+-    1921194766, 3706423967, 4112727661, 1531686908, 2796705673, 148555288, 554857194, 2407195515,
+-    26248257, 2952271312, 2251333922, 676868275, 3584149702, 2076793175, 1375858085, 4234771508,
+-    2493785488, 986493953, 319029491, 3178008930, 1083533591, 4009621638, 3342158964, 1767759333,
+-    3887577823, 1239362382, 1612160956, 3464433197, 864482904, 2649647049, 3022443323, 441336490,
+-    1706844275, 3419730402, 3793503504, 1282724993, 2978819316, 535149925, 908921239, 2554697734,
+-    380632892, 3100077741, 2433735263, 1063734222, 3265180603, 1828069930, 1161729752, 3948283721,
+-    2207997677, 770953084, 71007118, 2857626143, 1470763626, 4190274555, 3490330377, 2120394392,
+-    4035494306, 1591758899, 1999168705, 3644880208, 616140069, 2328960180, 2736367686, 225524183,
+-  },
+-};
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
+ 
+-static const uint8_t
+-WUFFS_CRC32__IEEE_X86_SSE42_K1K2[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  212, 43, 68, 84, 1, 0, 0, 0,
+-  150, 21, 228, 198, 1, 0, 0, 0,
+-};
+-
+-static const uint8_t
+-WUFFS_CRC32__IEEE_X86_SSE42_K3K4[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  208, 151, 25, 117, 1, 0, 0, 0,
+-  158, 0, 170, 204, 0, 0, 0, 0,
+-};
+-
+-static const uint8_t
+-WUFFS_CRC32__IEEE_X86_SSE42_K5ZZ[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  36, 97, 205, 99, 1, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-};
+-
+-static const uint8_t
+-WUFFS_CRC32__IEEE_X86_SSE42_PXMU[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  65, 6, 113, 219, 1, 0, 0, 0,
+-  65, 22, 1, 247, 1, 0, 0, 0,
+-};
+-
+-// ---------------- Private Initializer Prototypes
+-
+-// ---------------- Private Function Prototypes
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_crc32__ieee_hasher__up(
+-    wuffs_crc32__ieee_hasher* self,
+-    wuffs_base__slice_u8 a_x);
++  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
++  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
++  if ((v_dst_bits_per_pixel & 7u) != 0u) {
++    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
++    goto exit;
++  }
++  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
++  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
++  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048));
++  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
++  label__outer__continue:;
++  while (true) {
++    while (self->private_impl.f_pending_pad > 0u) {
++      if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++        status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
++        goto ok;
++      }
++      self->private_impl.f_pending_pad -= 1u;
++      iop_a_src += 1u;
++    }
++    while (true) {
++      if (self->private_impl.f_dst_x == self->private_impl.f_width) {
++        self->private_impl.f_dst_x = 0u;
++        self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
++        if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
++          if (self->private_impl.f_height > 0u) {
++            self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row;
++          }
++          goto label__outer__break;
++        } else if (self->private_impl.f_pad_per_row != 0u) {
++          self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row;
++          goto label__outer__continue;
++        }
++      }
++      v_p1_temp = ((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x));
++      v_p1 = wuffs_base__u32__min(v_p1_temp, 256u);
++      v_p0 = 0u;
++      while (v_p0 < v_p1) {
++        if (self->private_impl.f_bits_per_pixel == 16u) {
++          if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
++            break;
++          }
++          v_c32 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
++          iop_a_src += 2u;
++        } else {
++          if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
++            break;
++          }
++          v_c32 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++          iop_a_src += 4u;
++        }
++        v_channel = 0u;
++        while (v_channel < 4u) {
++          if (self->private_impl.f_channel_num_bits[v_channel] == 0u) {
++            self->private_data.f_scratch[((8u * v_p0) + (2u * v_channel) + 0u)] = 255u;
++            self->private_data.f_scratch[((8u * v_p0) + (2u * v_channel) + 1u)] = 255u;
++          } else {
++            v_c = ((v_c32 & self->private_impl.f_channel_masks[v_channel]) >> self->private_impl.f_channel_shifts[v_channel]);
++            v_num_bits = ((uint32_t)(self->private_impl.f_channel_num_bits[v_channel]));
++            while (v_num_bits < 16u) {
++              v_c |= ((uint32_t)(v_c << v_num_bits));
++              v_num_bits *= 2u;
++            }
++            v_c >>= (v_num_bits - 16u);
++            self->private_data.f_scratch[((8u * v_p0) + (2u * v_channel) + 0u)] = ((uint8_t)((v_c >> 0u)));
++            self->private_data.f_scratch[((8u * v_p0) + (2u * v_channel) + 1u)] = ((uint8_t)((v_c >> 8u)));
++          }
++          v_channel += 1u;
++        }
++        v_p0 += 1u;
++      }
++      v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
++      if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
++        v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
++      }
++      v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
++      if (v_i >= ((uint64_t)(v_dst.len))) {
++        v_n = ((uint64_t)(v_p0));
++      } else {
++        v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, (8u * v_p0)));
++      }
++      if (v_n == 0u) {
++        status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
++        goto ok;
++      }
++      wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
++    }
++  }
++  label__outer__break:;
++  status = wuffs_base__make_status(NULL);
++  goto ok;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_crc32__ieee_hasher__up__choosy_default(
+-    wuffs_crc32__ieee_hasher* self,
+-    wuffs_base__slice_u8 a_x);
++  ok:
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
+ 
+-#if defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32)
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_crc32__ieee_hasher__up_arm_crc32(
+-    wuffs_crc32__ieee_hasher* self,
+-    wuffs_base__slice_u8 a_x);
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32)
++  return status;
++}
+ 
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_crc32__ieee_hasher__up_x86_avx2(
+-    wuffs_crc32__ieee_hasher* self,
+-    wuffs_base__slice_u8 a_x);
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_64)
++// -------- func bmp.decoder.swizzle_low_bit_depth
+ 
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_crc32__ieee_hasher__up_x86_sse42(
+-    wuffs_crc32__ieee_hasher* self,
+-    wuffs_base__slice_u8 a_x);
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-
+-// ---------------- VTables
+-
+-const wuffs_base__hasher_u32__func_ptrs
+-wuffs_crc32__ieee_hasher__func_ptrs_for__wuffs_base__hasher_u32 = {
+-  (uint32_t(*)(const void*))(&wuffs_crc32__ieee_hasher__checksum_u32),
+-  (uint64_t(*)(const void*,
+-      uint32_t))(&wuffs_crc32__ieee_hasher__get_quirk),
+-  (wuffs_base__status(*)(void*,
+-      uint32_t,
+-      uint64_t))(&wuffs_crc32__ieee_hasher__set_quirk),
+-  (wuffs_base__empty_struct(*)(void*,
+-      wuffs_base__slice_u8))(&wuffs_crc32__ieee_hasher__update),
+-  (uint32_t(*)(void*,
+-      wuffs_base__slice_u8))(&wuffs_crc32__ieee_hasher__update_u32),
+-};
++static wuffs_base__status
++wuffs_bmp__decoder__swizzle_low_bit_depth(
++    wuffs_bmp__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-// ---------------- Initializer Implementations
++  wuffs_base__pixel_format v_dst_pixfmt = {0};
++  uint32_t v_dst_bits_per_pixel = 0;
++  uint32_t v_dst_bytes_per_pixel = 0;
++  uint64_t v_dst_bytes_per_row = 0;
++  wuffs_base__slice_u8 v_dst_palette = {0};
++  wuffs_base__table_u8 v_tab = {0};
++  wuffs_base__slice_u8 v_dst = {0};
++  uint64_t v_i = 0;
++  uint64_t v_n = 0;
++  uint32_t v_p0 = 0;
++  uint32_t v_chunk_bits = 0;
++  uint32_t v_chunk_count = 0;
++  uint32_t v_pixels_per_chunk = 0;
+ 
+-wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_crc32__ieee_hasher__initialize(
+-    wuffs_crc32__ieee_hasher* self,
+-    size_t sizeof_star_self,
+-    uint64_t wuffs_version,
+-    uint32_t options){
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (sizeof(*self) != sizeof_star_self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
+-  }
+-  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
+-      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
+-    // The whole point of this if-check is to detect an uninitialized *self.
+-    // We disable the warning on GCC. Clang-5.0 does not have this warning.
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+-#endif
+-    if (self->private_impl.magic != 0) {
+-      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
++  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
++  if ((v_dst_bits_per_pixel & 7u) != 0u) {
++    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
++    goto exit;
++  }
++  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
++  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
++  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048));
++  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
++  while (true) {
++    if (self->private_impl.f_dst_x == self->private_impl.f_width) {
++      self->private_impl.f_dst_x = 0u;
++      self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
++      if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
++        break;
++      }
+     }
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-  } else {
+-    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
+-      memset(self, 0, sizeof(*self));
+-      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
++    v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
++    if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
++      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
++    }
++    v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
++    if (v_i >= ((uint64_t)(v_dst.len))) {
++      if (self->private_impl.f_bits_per_pixel == 1u) {
++        v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 31u) / 32u);
++        v_pixels_per_chunk = 32u;
++      } else if (self->private_impl.f_bits_per_pixel == 2u) {
++        v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 15u) / 16u);
++        v_pixels_per_chunk = 16u;
++      } else {
++        v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 7u) / 8u);
++        v_pixels_per_chunk = 8u;
++      }
++      while ((v_chunk_count >= 64u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 256u)) {
++        iop_a_src += 256u;
++        self->private_impl.f_dst_x = wuffs_base__u32__min(self->private_impl.f_width, ((uint32_t)(self->private_impl.f_dst_x + (v_pixels_per_chunk * 64u))));
++        v_chunk_count -= 64u;
++      }
++      while ((v_chunk_count >= 8u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 32u)) {
++        iop_a_src += 32u;
++        self->private_impl.f_dst_x = wuffs_base__u32__min(self->private_impl.f_width, ((uint32_t)(self->private_impl.f_dst_x + (v_pixels_per_chunk * 8u))));
++        v_chunk_count -= 8u;
++      }
++      while (v_chunk_count > 0u) {
++        if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
++          status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
++          goto ok;
++        }
++        iop_a_src += 4u;
++        self->private_impl.f_dst_x = wuffs_base__u32__min(self->private_impl.f_width, ((uint32_t)(self->private_impl.f_dst_x + (v_pixels_per_chunk * 1u))));
++        v_chunk_count -= 1u;
++      }
++      continue;
++    }
++    v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_i);
++    v_p0 = 0u;
++    if (self->private_impl.f_bits_per_pixel == 1u) {
++      v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 31u) / 32u);
++      v_chunk_count = wuffs_base__u32__min(v_chunk_count, 16u);
++      while ((v_chunk_count > 0u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 4u)) {
++        v_chunk_bits = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++        iop_a_src += 4u;
++        self->private_data.f_scratch[(v_p0 + 0u)] = ((uint8_t)((1u & (v_chunk_bits >> 31u))));
++        self->private_data.f_scratch[(v_p0 + 1u)] = ((uint8_t)((1u & (v_chunk_bits >> 30u))));
++        self->private_data.f_scratch[(v_p0 + 2u)] = ((uint8_t)((1u & (v_chunk_bits >> 29u))));
++        self->private_data.f_scratch[(v_p0 + 3u)] = ((uint8_t)((1u & (v_chunk_bits >> 28u))));
++        self->private_data.f_scratch[(v_p0 + 4u)] = ((uint8_t)((1u & (v_chunk_bits >> 27u))));
++        self->private_data.f_scratch[(v_p0 + 5u)] = ((uint8_t)((1u & (v_chunk_bits >> 26u))));
++        self->private_data.f_scratch[(v_p0 + 6u)] = ((uint8_t)((1u & (v_chunk_bits >> 25u))));
++        self->private_data.f_scratch[(v_p0 + 7u)] = ((uint8_t)((1u & (v_chunk_bits >> 24u))));
++        self->private_data.f_scratch[(v_p0 + 8u)] = ((uint8_t)((1u & (v_chunk_bits >> 23u))));
++        self->private_data.f_scratch[(v_p0 + 9u)] = ((uint8_t)((1u & (v_chunk_bits >> 22u))));
++        self->private_data.f_scratch[(v_p0 + 10u)] = ((uint8_t)((1u & (v_chunk_bits >> 21u))));
++        self->private_data.f_scratch[(v_p0 + 11u)] = ((uint8_t)((1u & (v_chunk_bits >> 20u))));
++        self->private_data.f_scratch[(v_p0 + 12u)] = ((uint8_t)((1u & (v_chunk_bits >> 19u))));
++        self->private_data.f_scratch[(v_p0 + 13u)] = ((uint8_t)((1u & (v_chunk_bits >> 18u))));
++        self->private_data.f_scratch[(v_p0 + 14u)] = ((uint8_t)((1u & (v_chunk_bits >> 17u))));
++        self->private_data.f_scratch[(v_p0 + 15u)] = ((uint8_t)((1u & (v_chunk_bits >> 16u))));
++        self->private_data.f_scratch[(v_p0 + 16u)] = ((uint8_t)((1u & (v_chunk_bits >> 15u))));
++        self->private_data.f_scratch[(v_p0 + 17u)] = ((uint8_t)((1u & (v_chunk_bits >> 14u))));
++        self->private_data.f_scratch[(v_p0 + 18u)] = ((uint8_t)((1u & (v_chunk_bits >> 13u))));
++        self->private_data.f_scratch[(v_p0 + 19u)] = ((uint8_t)((1u & (v_chunk_bits >> 12u))));
++        self->private_data.f_scratch[(v_p0 + 20u)] = ((uint8_t)((1u & (v_chunk_bits >> 11u))));
++        self->private_data.f_scratch[(v_p0 + 21u)] = ((uint8_t)((1u & (v_chunk_bits >> 10u))));
++        self->private_data.f_scratch[(v_p0 + 22u)] = ((uint8_t)((1u & (v_chunk_bits >> 9u))));
++        self->private_data.f_scratch[(v_p0 + 23u)] = ((uint8_t)((1u & (v_chunk_bits >> 8u))));
++        self->private_data.f_scratch[(v_p0 + 24u)] = ((uint8_t)((1u & (v_chunk_bits >> 7u))));
++        self->private_data.f_scratch[(v_p0 + 25u)] = ((uint8_t)((1u & (v_chunk_bits >> 6u))));
++        self->private_data.f_scratch[(v_p0 + 26u)] = ((uint8_t)((1u & (v_chunk_bits >> 5u))));
++        self->private_data.f_scratch[(v_p0 + 27u)] = ((uint8_t)((1u & (v_chunk_bits >> 4u))));
++        self->private_data.f_scratch[(v_p0 + 28u)] = ((uint8_t)((1u & (v_chunk_bits >> 3u))));
++        self->private_data.f_scratch[(v_p0 + 29u)] = ((uint8_t)((1u & (v_chunk_bits >> 2u))));
++        self->private_data.f_scratch[(v_p0 + 30u)] = ((uint8_t)((1u & (v_chunk_bits >> 1u))));
++        self->private_data.f_scratch[(v_p0 + 31u)] = ((uint8_t)((1u & (v_chunk_bits >> 0u))));
++        v_p0 = ((v_p0 & 511u) + 32u);
++        v_chunk_count -= 1u;
++      }
++    } else if (self->private_impl.f_bits_per_pixel == 2u) {
++      v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 15u) / 16u);
++      v_chunk_count = wuffs_base__u32__min(v_chunk_count, 32u);
++      while ((v_chunk_count > 0u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 4u)) {
++        v_chunk_bits = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++        iop_a_src += 4u;
++        self->private_data.f_scratch[(v_p0 + 0u)] = ((uint8_t)((3u & (v_chunk_bits >> 30u))));
++        self->private_data.f_scratch[(v_p0 + 1u)] = ((uint8_t)((3u & (v_chunk_bits >> 28u))));
++        self->private_data.f_scratch[(v_p0 + 2u)] = ((uint8_t)((3u & (v_chunk_bits >> 26u))));
++        self->private_data.f_scratch[(v_p0 + 3u)] = ((uint8_t)((3u & (v_chunk_bits >> 24u))));
++        self->private_data.f_scratch[(v_p0 + 4u)] = ((uint8_t)((3u & (v_chunk_bits >> 22u))));
++        self->private_data.f_scratch[(v_p0 + 5u)] = ((uint8_t)((3u & (v_chunk_bits >> 20u))));
++        self->private_data.f_scratch[(v_p0 + 6u)] = ((uint8_t)((3u & (v_chunk_bits >> 18u))));
++        self->private_data.f_scratch[(v_p0 + 7u)] = ((uint8_t)((3u & (v_chunk_bits >> 16u))));
++        self->private_data.f_scratch[(v_p0 + 8u)] = ((uint8_t)((3u & (v_chunk_bits >> 14u))));
++        self->private_data.f_scratch[(v_p0 + 9u)] = ((uint8_t)((3u & (v_chunk_bits >> 12u))));
++        self->private_data.f_scratch[(v_p0 + 10u)] = ((uint8_t)((3u & (v_chunk_bits >> 10u))));
++        self->private_data.f_scratch[(v_p0 + 11u)] = ((uint8_t)((3u & (v_chunk_bits >> 8u))));
++        self->private_data.f_scratch[(v_p0 + 12u)] = ((uint8_t)((3u & (v_chunk_bits >> 6u))));
++        self->private_data.f_scratch[(v_p0 + 13u)] = ((uint8_t)((3u & (v_chunk_bits >> 4u))));
++        self->private_data.f_scratch[(v_p0 + 14u)] = ((uint8_t)((3u & (v_chunk_bits >> 2u))));
++        self->private_data.f_scratch[(v_p0 + 15u)] = ((uint8_t)((3u & (v_chunk_bits >> 0u))));
++        v_p0 = ((v_p0 & 511u) + 16u);
++        v_chunk_count -= 1u;
++      }
+     } else {
+-      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++      v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 7u) / 8u);
++      v_chunk_count = wuffs_base__u32__min(v_chunk_count, 64u);
++      while ((v_chunk_count > 0u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 4u)) {
++        v_chunk_bits = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++        iop_a_src += 4u;
++        self->private_data.f_scratch[(v_p0 + 0u)] = ((uint8_t)((15u & (v_chunk_bits >> 28u))));
++        self->private_data.f_scratch[(v_p0 + 1u)] = ((uint8_t)((15u & (v_chunk_bits >> 24u))));
++        self->private_data.f_scratch[(v_p0 + 2u)] = ((uint8_t)((15u & (v_chunk_bits >> 20u))));
++        self->private_data.f_scratch[(v_p0 + 3u)] = ((uint8_t)((15u & (v_chunk_bits >> 16u))));
++        self->private_data.f_scratch[(v_p0 + 4u)] = ((uint8_t)((15u & (v_chunk_bits >> 12u))));
++        self->private_data.f_scratch[(v_p0 + 5u)] = ((uint8_t)((15u & (v_chunk_bits >> 8u))));
++        self->private_data.f_scratch[(v_p0 + 6u)] = ((uint8_t)((15u & (v_chunk_bits >> 4u))));
++        self->private_data.f_scratch[(v_p0 + 7u)] = ((uint8_t)((15u & (v_chunk_bits >> 0u))));
++        v_p0 = ((v_p0 & 511u) + 8u);
++        v_chunk_count -= 1u;
++      }
++    }
++    v_p0 = wuffs_base__u32__min(v_p0, wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x));
++    v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, v_p0));
++    if (v_n == 0u) {
++      status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
++      goto ok;
+     }
++    wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
+   }
++  status = wuffs_base__make_status(NULL);
++  goto ok;
+ 
+-  self->private_impl.choosy_up = &wuffs_crc32__ieee_hasher__up__choosy_default;
++  ok:
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
+ 
+-  self->private_impl.magic = WUFFS_BASE__MAGIC;
+-  self->private_impl.vtable_for__wuffs_base__hasher_u32.vtable_name =
+-      wuffs_base__hasher_u32__vtable_name;
+-  self->private_impl.vtable_for__wuffs_base__hasher_u32.function_pointers =
+-      (const void*)(&wuffs_crc32__ieee_hasher__func_ptrs_for__wuffs_base__hasher_u32);
+-  return wuffs_base__make_status(NULL);
++  return status;
+ }
+ 
+-wuffs_crc32__ieee_hasher*
+-wuffs_crc32__ieee_hasher__alloc(void) {
+-  wuffs_crc32__ieee_hasher* x =
+-      (wuffs_crc32__ieee_hasher*)(calloc(sizeof(wuffs_crc32__ieee_hasher), 1));
+-  if (!x) {
+-    return NULL;
++// -------- func bmp.decoder.frame_dirty_rect
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
++wuffs_bmp__decoder__frame_dirty_rect(
++    const wuffs_bmp__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_rect_ie_u32();
+   }
+-  if (wuffs_crc32__ieee_hasher__initialize(
+-      x, sizeof(wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
+-    free(x);
+-    return NULL;
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_rect_ie_u32();
+   }
+-  return x;
+-}
+ 
+-size_t
+-sizeof__wuffs_crc32__ieee_hasher(void) {
+-  return sizeof(wuffs_crc32__ieee_hasher);
++  return wuffs_base__utility__make_rect_ie_u32(
++      0u,
++      0u,
++      self->private_impl.f_width,
++      self->private_impl.f_height);
+ }
+ 
+-// ---------------- Function Implementations
+-
+-// -------- func crc32.ieee_hasher.get_quirk
++// -------- func bmp.decoder.num_animation_loops
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_crc32__ieee_hasher__get_quirk(
+-    const wuffs_crc32__ieee_hasher* self,
+-    uint32_t a_key) {
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_bmp__decoder__num_animation_loops(
++    const wuffs_bmp__decoder* self) {
+   if (!self) {
+     return 0;
+   }
+@@ -33524,709 +33654,531 @@ wuffs_crc32__ieee_hasher__get_quirk(
+   return 0u;
+ }
+ 
+-// -------- func crc32.ieee_hasher.set_quirk
++// -------- func bmp.decoder.num_decoded_frame_configs
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_crc32__ieee_hasher__set_quirk(
+-    wuffs_crc32__ieee_hasher* self,
+-    uint32_t a_key,
+-    uint64_t a_value) {
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_bmp__decoder__num_decoded_frame_configs(
++    const wuffs_bmp__decoder* self) {
+   if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++    return 0;
+   }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
+   }
+ 
+-  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++  if (self->private_impl.f_call_sequence > 32u) {
++    return 1u;
++  }
++  return 0u;
+ }
+ 
+-// -------- func crc32.ieee_hasher.update
++// -------- func bmp.decoder.num_decoded_frames
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_crc32__ieee_hasher__update(
+-    wuffs_crc32__ieee_hasher* self,
+-    wuffs_base__slice_u8 a_x) {
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_bmp__decoder__num_decoded_frames(
++    const wuffs_bmp__decoder* self) {
+   if (!self) {
+-    return wuffs_base__make_empty_struct();
++    return 0;
+   }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_empty_struct();
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
+   }
+ 
+-  if (self->private_impl.f_state == 0u) {
+-    self->private_impl.choosy_up = (
+-#if defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32)
+-        wuffs_base__cpu_arch__have_arm_crc32() ? &wuffs_crc32__ieee_hasher__up_arm_crc32 :
+-#endif
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
+-        wuffs_base__cpu_arch__have_x86_avx2() ? &wuffs_crc32__ieee_hasher__up_x86_avx2 :
+-#endif
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_crc32__ieee_hasher__up_x86_sse42 :
+-#endif
+-        self->private_impl.choosy_up);
++  if (self->private_impl.f_call_sequence > 64u) {
++    return 1u;
+   }
+-  wuffs_crc32__ieee_hasher__up(self, a_x);
+-  return wuffs_base__make_empty_struct();
++  return 0u;
+ }
+ 
+-// -------- func crc32.ieee_hasher.update_u32
++// -------- func bmp.decoder.restart_frame
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_crc32__ieee_hasher__update_u32(
+-    wuffs_crc32__ieee_hasher* self,
+-    wuffs_base__slice_u8 a_x) {
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_bmp__decoder__restart_frame(
++    wuffs_bmp__decoder* self,
++    uint64_t a_index,
++    uint64_t a_io_position) {
+   if (!self) {
+-    return 0;
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+   if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return 0;
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
+   }
+ 
+-  wuffs_crc32__ieee_hasher__update(self, a_x);
+-  return self->private_impl.f_state;
++  if (self->private_impl.f_call_sequence < 32u) {
++    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++  }
++  if (a_index != 0u) {
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  self->private_impl.f_call_sequence = 40u;
++  self->private_impl.f_frame_config_io_position = a_io_position;
++  return wuffs_base__make_status(NULL);
+ }
+ 
+-// -------- func crc32.ieee_hasher.up
++// -------- func bmp.decoder.set_report_metadata
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_crc32__ieee_hasher__up(
+-    wuffs_crc32__ieee_hasher* self,
+-    wuffs_base__slice_u8 a_x) {
+-  return (*self->private_impl.choosy_up)(self, a_x);
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_bmp__decoder__set_report_metadata(
++    wuffs_bmp__decoder* self,
++    uint32_t a_fourcc,
++    bool a_report) {
++  return wuffs_base__make_empty_struct();
+ }
+ 
++// -------- func bmp.decoder.tell_me_more
++
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_crc32__ieee_hasher__up__choosy_default(
+-    wuffs_crc32__ieee_hasher* self,
+-    wuffs_base__slice_u8 a_x) {
+-  uint32_t v_s = 0;
+-  wuffs_base__slice_u8 v_p = {0};
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_bmp__decoder__tell_me_more(
++    wuffs_bmp__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__more_information* a_minfo,
++    wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_dst || !a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 4)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  v_s = (4294967295u ^ self->private_impl.f_state);
+-  {
+-    wuffs_base__slice_u8 i_slice_p = a_x;
+-    v_p.ptr = i_slice_p.ptr;
+-    v_p.len = 16;
+-    uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32);
+-    while (v_p.ptr < i_end0_p) {
+-      v_s ^= ((((uint32_t)(v_p.ptr[0u])) << 0u) |
+-          (((uint32_t)(v_p.ptr[1u])) << 8u) |
+-          (((uint32_t)(v_p.ptr[2u])) << 16u) |
+-          (((uint32_t)(v_p.ptr[3u])) << 24u));
+-      v_s = (WUFFS_CRC32__IEEE_TABLE[0u][v_p.ptr[15u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[1u][v_p.ptr[14u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[2u][v_p.ptr[13u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[3u][v_p.ptr[12u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[4u][v_p.ptr[11u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[5u][v_p.ptr[10u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[6u][v_p.ptr[9u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[7u][v_p.ptr[8u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[8u][v_p.ptr[7u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[9u][v_p.ptr[6u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[10u][v_p.ptr[5u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[11u][v_p.ptr[4u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[12u][(255u & (v_s >> 24u))] ^
+-          WUFFS_CRC32__IEEE_TABLE[13u][(255u & (v_s >> 16u))] ^
+-          WUFFS_CRC32__IEEE_TABLE[14u][(255u & (v_s >> 8u))] ^
+-          WUFFS_CRC32__IEEE_TABLE[15u][(255u & (v_s >> 0u))]);
+-      v_p.ptr += 16;
+-      v_s ^= ((((uint32_t)(v_p.ptr[0u])) << 0u) |
+-          (((uint32_t)(v_p.ptr[1u])) << 8u) |
+-          (((uint32_t)(v_p.ptr[2u])) << 16u) |
+-          (((uint32_t)(v_p.ptr[3u])) << 24u));
+-      v_s = (WUFFS_CRC32__IEEE_TABLE[0u][v_p.ptr[15u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[1u][v_p.ptr[14u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[2u][v_p.ptr[13u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[3u][v_p.ptr[12u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[4u][v_p.ptr[11u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[5u][v_p.ptr[10u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[6u][v_p.ptr[9u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[7u][v_p.ptr[8u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[8u][v_p.ptr[7u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[9u][v_p.ptr[6u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[10u][v_p.ptr[5u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[11u][v_p.ptr[4u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[12u][(255u & (v_s >> 24u))] ^
+-          WUFFS_CRC32__IEEE_TABLE[13u][(255u & (v_s >> 16u))] ^
+-          WUFFS_CRC32__IEEE_TABLE[14u][(255u & (v_s >> 8u))] ^
+-          WUFFS_CRC32__IEEE_TABLE[15u][(255u & (v_s >> 0u))]);
+-      v_p.ptr += 16;
+-    }
+-    v_p.len = 16;
+-    uint8_t* i_end1_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 16) * 16);
+-    while (v_p.ptr < i_end1_p) {
+-      v_s ^= ((((uint32_t)(v_p.ptr[0u])) << 0u) |
+-          (((uint32_t)(v_p.ptr[1u])) << 8u) |
+-          (((uint32_t)(v_p.ptr[2u])) << 16u) |
+-          (((uint32_t)(v_p.ptr[3u])) << 24u));
+-      v_s = (WUFFS_CRC32__IEEE_TABLE[0u][v_p.ptr[15u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[1u][v_p.ptr[14u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[2u][v_p.ptr[13u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[3u][v_p.ptr[12u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[4u][v_p.ptr[11u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[5u][v_p.ptr[10u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[6u][v_p.ptr[9u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[7u][v_p.ptr[8u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[8u][v_p.ptr[7u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[9u][v_p.ptr[6u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[10u][v_p.ptr[5u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[11u][v_p.ptr[4u]] ^
+-          WUFFS_CRC32__IEEE_TABLE[12u][(255u & (v_s >> 24u))] ^
+-          WUFFS_CRC32__IEEE_TABLE[13u][(255u & (v_s >> 16u))] ^
+-          WUFFS_CRC32__IEEE_TABLE[14u][(255u & (v_s >> 8u))] ^
+-          WUFFS_CRC32__IEEE_TABLE[15u][(255u & (v_s >> 0u))]);
+-      v_p.ptr += 16;
+-    }
+-    v_p.len = 1;
+-    uint8_t* i_end2_p = i_slice_p.ptr + i_slice_p.len;
+-    while (v_p.ptr < i_end2_p) {
+-      v_s = (WUFFS_CRC32__IEEE_TABLE[0u][(((uint8_t)(v_s)) ^ v_p.ptr[0u])] ^ (v_s >> 8u));
+-      v_p.ptr += 1;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  uint32_t coro_susp_point = self->private_impl.p_tell_me_more;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_bmp__decoder__do_tell_me_more(self, a_dst, a_minfo, a_src);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_bmp__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+     }
+-    v_p.len = 0;
++
++    ok:
++    self->private_impl.p_tell_me_more = 0;
++    goto exit;
+   }
+-  self->private_impl.f_state = (4294967295u ^ v_s);
+-  return wuffs_base__make_empty_struct();
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_tell_me_more = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 4 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
+ }
+ 
+-// -------- func crc32.ieee_hasher.checksum_u32
++// -------- func bmp.decoder.do_tell_me_more
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_crc32__ieee_hasher__checksum_u32(
+-    const wuffs_crc32__ieee_hasher* self) {
+-  if (!self) {
+-    return 0;
++static wuffs_base__status
++wuffs_bmp__decoder__do_tell_me_more(
++    wuffs_bmp__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__more_information* a_minfo,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  if (self->private_impl.f_io_redirect_fourcc <= 1u) {
++    status = wuffs_base__make_status(wuffs_base__error__no_more_information);
++    goto exit;
+   }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
++  if (a_minfo != NULL) {
++    wuffs_base__more_information__set(a_minfo,
++        1u,
++        self->private_impl.f_io_redirect_fourcc,
++        0u,
++        self->private_impl.f_io_redirect_pos,
++        18446744073709551615u);
+   }
++  self->private_impl.f_io_redirect_fourcc = 1u;
+ 
+-  return self->private_impl.f_state;
++  goto ok;
++  ok:
++  goto exit;
++  exit:
++  return status;
+ }
+ 
+-// ‼ WUFFS MULTI-FILE SECTION +arm_crc32
+-// -------- func crc32.ieee_hasher.up_arm_crc32
++// -------- func bmp.decoder.workbuf_len
+ 
+-#if defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32)
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_crc32__ieee_hasher__up_arm_crc32(
+-    wuffs_crc32__ieee_hasher* self,
+-    wuffs_base__slice_u8 a_x) {
+-  wuffs_base__slice_u8 v_p = {0};
+-  uint32_t v_s = 0;
+-
+-  v_s = (4294967295u ^ self->private_impl.f_state);
+-  while ((((uint64_t)(a_x.len)) > 0u) && ((15u & ((uint32_t)(0xFFFu & (uintptr_t)(a_x.ptr)))) != 0u)) {
+-    v_s = __crc32b(v_s, a_x.ptr[0u]);
+-    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_bmp__decoder__workbuf_len(
++    const wuffs_bmp__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_range_ii_u64();
+   }
+-  {
+-    wuffs_base__slice_u8 i_slice_p = a_x;
+-    v_p.ptr = i_slice_p.ptr;
+-    v_p.len = 8;
+-    uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 128) * 128);
+-    while (v_p.ptr < i_end0_p) {
+-      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
+-      v_p.ptr += 8;
+-      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
+-      v_p.ptr += 8;
+-      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
+-      v_p.ptr += 8;
+-      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
+-      v_p.ptr += 8;
+-      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
+-      v_p.ptr += 8;
+-      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
+-      v_p.ptr += 8;
+-      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
+-      v_p.ptr += 8;
+-      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
+-      v_p.ptr += 8;
+-      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
+-      v_p.ptr += 8;
+-      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
+-      v_p.ptr += 8;
+-      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
+-      v_p.ptr += 8;
+-      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
+-      v_p.ptr += 8;
+-      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
+-      v_p.ptr += 8;
+-      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
+-      v_p.ptr += 8;
+-      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
+-      v_p.ptr += 8;
+-      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
+-      v_p.ptr += 8;
+-    }
+-    v_p.len = 8;
+-    uint8_t* i_end1_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 8) * 8);
+-    while (v_p.ptr < i_end1_p) {
+-      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
+-      v_p.ptr += 8;
+-    }
+-    v_p.len = 1;
+-    uint8_t* i_end2_p = i_slice_p.ptr + i_slice_p.len;
+-    while (v_p.ptr < i_end2_p) {
+-      v_s = __crc32b(v_s, v_p.ptr[0u]);
+-      v_p.ptr += 1;
+-    }
+-    v_p.len = 0;
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_range_ii_u64();
+   }
+-  self->private_impl.f_state = (4294967295u ^ v_s);
+-  return wuffs_base__make_empty_struct();
++
++  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
+ }
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32)
+-// ‼ WUFFS MULTI-FILE SECTION -arm_crc32
+ 
+-// ‼ WUFFS MULTI-FILE SECTION +x86_avx2
+-// -------- func crc32.ieee_hasher.up_x86_avx2
++// -------- func bmp.decoder.read_palette
+ 
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
+-WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_crc32__ieee_hasher__up_x86_avx2(
+-    wuffs_crc32__ieee_hasher* self,
+-    wuffs_base__slice_u8 a_x) {
+-  uint32_t v_s = 0;
+-  wuffs_base__slice_u8 v_p = {0};
+-  __m128i v_k = {0};
+-  __m128i v_x0 = {0};
+-  __m128i v_x1 = {0};
+-  __m128i v_x2 = {0};
+-  __m128i v_x3 = {0};
+-  __m128i v_y0 = {0};
+-  __m128i v_y1 = {0};
+-  __m128i v_y2 = {0};
+-  __m128i v_y3 = {0};
+-  uint64_t v_tail_index = 0;
++static wuffs_base__status
++wuffs_bmp__decoder__read_palette(
++    wuffs_bmp__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  v_s = (4294967295u ^ self->private_impl.f_state);
+-  while ((((uint64_t)(a_x.len)) > 0u) && ((15u & ((uint32_t)(0xFFFu & (uintptr_t)(a_x.ptr)))) != 0u)) {
+-    v_s = (WUFFS_CRC32__IEEE_TABLE[0u][(((uint8_t)(v_s)) ^ a_x.ptr[0u])] ^ (v_s >> 8u));
+-    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
++  uint32_t v_i = 0;
++  uint32_t v_argb = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+-  if (((uint64_t)(a_x.len)) < 64u) {
+-    {
+-      wuffs_base__slice_u8 i_slice_p = a_x;
+-      v_p.ptr = i_slice_p.ptr;
+-      v_p.len = 1;
+-      uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len;
+-      while (v_p.ptr < i_end0_p) {
+-        v_s = (WUFFS_CRC32__IEEE_TABLE[0u][(((uint8_t)(v_s)) ^ v_p.ptr[0u])] ^ (v_s >> 8u));
+-        v_p.ptr += 1;
++
++  uint32_t coro_susp_point = self->private_impl.p_read_palette;
++  if (coro_susp_point) {
++    v_i = self->private_data.s_read_palette.v_i;
++  }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_bitmap_info_len == 12u) {
++      while ((v_i < 256u) && (self->private_impl.f_padding >= 3u)) {
++        self->private_impl.f_padding -= 3u;
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++          uint32_t t_0;
++          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
++            t_0 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
++            iop_a_src += 3;
++          } else {
++            self->private_data.s_read_palette.scratch = 0;
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++            while (true) {
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint64_t* scratch = &self->private_data.s_read_palette.scratch;
++              uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
++              *scratch <<= 8;
++              *scratch >>= 8;
++              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
++              if (num_bits_0 == 16) {
++                t_0 = ((uint32_t)(*scratch));
++                break;
++              }
++              num_bits_0 += 8u;
++              *scratch |= ((uint64_t)(num_bits_0)) << 56;
++            }
++          }
++          v_argb = t_0;
++        }
++        v_argb |= 4278190080u;
++        self->private_data.f_src_palette[((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u)));
++        self->private_data.f_src_palette[((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u)));
++        self->private_data.f_src_palette[((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u)));
++        self->private_data.f_src_palette[((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u)));
++        v_i += 1u;
++      }
++    } else {
++      while ((v_i < 256u) && (self->private_impl.f_padding >= 4u)) {
++        self->private_impl.f_padding -= 4u;
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++          uint32_t t_1;
++          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++            t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++            iop_a_src += 4;
++          } else {
++            self->private_data.s_read_palette.scratch = 0;
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++            while (true) {
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint64_t* scratch = &self->private_data.s_read_palette.scratch;
++              uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
++              *scratch <<= 8;
++              *scratch >>= 8;
++              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
++              if (num_bits_1 == 24) {
++                t_1 = ((uint32_t)(*scratch));
++                break;
++              }
++              num_bits_1 += 8u;
++              *scratch |= ((uint64_t)(num_bits_1)) << 56;
++            }
++          }
++          v_argb = t_1;
++        }
++        v_argb |= 4278190080u;
++        self->private_data.f_src_palette[((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u)));
++        self->private_data.f_src_palette[((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u)));
++        self->private_data.f_src_palette[((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u)));
++        self->private_data.f_src_palette[((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u)));
++        v_i += 1u;
+       }
+-      v_p.len = 0;
+     }
+-    self->private_impl.f_state = (4294967295u ^ v_s);
+-    return wuffs_base__make_empty_struct();
+-  }
+-  v_x0 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u));
+-  v_x1 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16u));
+-  v_x2 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 32u));
+-  v_x3 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 48u));
+-  v_x0 = _mm_xor_si128(v_x0, _mm_cvtsi32_si128((int32_t)(v_s)));
+-  v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K1K2));
+-  {
+-    wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, 64u);
+-    v_p.ptr = i_slice_p.ptr;
+-    v_p.len = 64;
+-    uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 64) * 64);
+-    while (v_p.ptr < i_end0_p) {
+-      v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u));
+-      v_y1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(0u));
+-      v_y2 = _mm_clmulepi64_si128(v_x2, v_k, (int32_t)(0u));
+-      v_y3 = _mm_clmulepi64_si128(v_x3, v_k, (int32_t)(0u));
+-      v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u));
+-      v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(17u));
+-      v_x2 = _mm_clmulepi64_si128(v_x2, v_k, (int32_t)(17u));
+-      v_x3 = _mm_clmulepi64_si128(v_x3, v_k, (int32_t)(17u));
+-      v_x0 = _mm_xor_si128(_mm_xor_si128(v_x0, v_y0), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 0u)));
+-      v_x1 = _mm_xor_si128(_mm_xor_si128(v_x1, v_y1), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 16u)));
+-      v_x2 = _mm_xor_si128(_mm_xor_si128(v_x2, v_y2), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 32u)));
+-      v_x3 = _mm_xor_si128(_mm_xor_si128(v_x3, v_y3), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 48u)));
+-      v_p.ptr += 64;
++    while (v_i < 256u) {
++      self->private_data.f_src_palette[((4u * v_i) + 0u)] = 0u;
++      self->private_data.f_src_palette[((4u * v_i) + 1u)] = 0u;
++      self->private_data.f_src_palette[((4u * v_i) + 2u)] = 0u;
++      self->private_data.f_src_palette[((4u * v_i) + 3u)] = 255u;
++      v_i += 1u;
+     }
+-    v_p.len = 0;
++
++    goto ok;
++    ok:
++    self->private_impl.p_read_palette = 0;
++    goto exit;
+   }
+-  v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K3K4));
+-  v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u));
+-  v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u));
+-  v_x0 = _mm_xor_si128(v_x0, v_x1);
+-  v_x0 = _mm_xor_si128(v_x0, v_y0);
+-  v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u));
+-  v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u));
+-  v_x0 = _mm_xor_si128(v_x0, v_x2);
+-  v_x0 = _mm_xor_si128(v_x0, v_y0);
+-  v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u));
+-  v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u));
+-  v_x0 = _mm_xor_si128(v_x0, v_x3);
+-  v_x0 = _mm_xor_si128(v_x0, v_y0);
+-  v_x1 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(16u));
+-  v_x2 = _mm_set_epi32((int32_t)(0u), (int32_t)(4294967295u), (int32_t)(0u), (int32_t)(4294967295u));
+-  v_x0 = _mm_srli_si128(v_x0, (int32_t)(8u));
+-  v_x0 = _mm_xor_si128(v_x0, v_x1);
+-  v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K5ZZ));
+-  v_x1 = _mm_srli_si128(v_x0, (int32_t)(4u));
+-  v_x0 = _mm_and_si128(v_x0, v_x2);
+-  v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u));
+-  v_x0 = _mm_xor_si128(v_x0, v_x1);
+-  v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_PXMU));
+-  v_x1 = _mm_and_si128(v_x0, v_x2);
+-  v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(16u));
+-  v_x1 = _mm_and_si128(v_x1, v_x2);
+-  v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(0u));
+-  v_x0 = _mm_xor_si128(v_x0, v_x1);
+-  v_s = ((uint32_t)(_mm_extract_epi32(v_x0, (int32_t)(1u))));
+-  v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551552u);
+-  if (v_tail_index < ((uint64_t)(a_x.len))) {
+-    {
+-      wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index);
+-      v_p.ptr = i_slice_p.ptr;
+-      v_p.len = 1;
+-      uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len;
+-      while (v_p.ptr < i_end0_p) {
+-        v_s = (WUFFS_CRC32__IEEE_TABLE[0u][(((uint8_t)(v_s)) ^ v_p.ptr[0u])] ^ (v_s >> 8u));
+-        v_p.ptr += 1;
+-      }
+-      v_p.len = 0;
+-    }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_read_palette = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_read_palette.v_i = v_i;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+-  self->private_impl.f_state = (4294967295u ^ v_s);
+-  return wuffs_base__make_empty_struct();
++
++  return status;
+ }
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_64)
+-// ‼ WUFFS MULTI-FILE SECTION -x86_avx2
+ 
+-// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
+-// -------- func crc32.ieee_hasher.up_x86_sse42
++// -------- func bmp.decoder.process_masks
+ 
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_crc32__ieee_hasher__up_x86_sse42(
+-    wuffs_crc32__ieee_hasher* self,
+-    wuffs_base__slice_u8 a_x) {
+-  uint32_t v_s = 0;
+-  wuffs_base__slice_u8 v_p = {0};
+-  __m128i v_k = {0};
+-  __m128i v_x0 = {0};
+-  __m128i v_x1 = {0};
+-  __m128i v_x2 = {0};
+-  __m128i v_x3 = {0};
+-  __m128i v_y0 = {0};
+-  __m128i v_y1 = {0};
+-  __m128i v_y2 = {0};
+-  __m128i v_y3 = {0};
+-  uint64_t v_tail_index = 0;
++static wuffs_base__status
++wuffs_bmp__decoder__process_masks(
++    wuffs_bmp__decoder* self) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  v_s = (4294967295u ^ self->private_impl.f_state);
+-  while ((((uint64_t)(a_x.len)) > 0u) && ((15u & ((uint32_t)(0xFFFu & (uintptr_t)(a_x.ptr)))) != 0u)) {
+-    v_s = (WUFFS_CRC32__IEEE_TABLE[0u][(((uint8_t)(v_s)) ^ a_x.ptr[0u])] ^ (v_s >> 8u));
+-    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
+-  }
+-  if (((uint64_t)(a_x.len)) < 64u) {
+-    {
+-      wuffs_base__slice_u8 i_slice_p = a_x;
+-      v_p.ptr = i_slice_p.ptr;
+-      v_p.len = 1;
+-      uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len;
+-      while (v_p.ptr < i_end0_p) {
+-        v_s = (WUFFS_CRC32__IEEE_TABLE[0u][(((uint8_t)(v_s)) ^ v_p.ptr[0u])] ^ (v_s >> 8u));
+-        v_p.ptr += 1;
++  uint32_t v_i = 0;
++  uint32_t v_mask = 0;
++  uint32_t v_n = 0;
++
++  while (v_i < 4u) {
++    v_mask = self->private_impl.f_channel_masks[v_i];
++    if (v_mask != 0u) {
++      v_n = 0u;
++      while ((v_mask & 1u) == 0u) {
++        v_n += 1u;
++        v_mask >>= 1u;
+       }
+-      v_p.len = 0;
+-    }
+-    self->private_impl.f_state = (4294967295u ^ v_s);
+-    return wuffs_base__make_empty_struct();
+-  }
+-  v_x0 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u));
+-  v_x1 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16u));
+-  v_x2 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 32u));
+-  v_x3 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 48u));
+-  v_x0 = _mm_xor_si128(v_x0, _mm_cvtsi32_si128((int32_t)(v_s)));
+-  v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K1K2));
+-  {
+-    wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, 64u);
+-    v_p.ptr = i_slice_p.ptr;
+-    v_p.len = 64;
+-    uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 64) * 64);
+-    while (v_p.ptr < i_end0_p) {
+-      v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u));
+-      v_y1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(0u));
+-      v_y2 = _mm_clmulepi64_si128(v_x2, v_k, (int32_t)(0u));
+-      v_y3 = _mm_clmulepi64_si128(v_x3, v_k, (int32_t)(0u));
+-      v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u));
+-      v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(17u));
+-      v_x2 = _mm_clmulepi64_si128(v_x2, v_k, (int32_t)(17u));
+-      v_x3 = _mm_clmulepi64_si128(v_x3, v_k, (int32_t)(17u));
+-      v_x0 = _mm_xor_si128(_mm_xor_si128(v_x0, v_y0), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 0u)));
+-      v_x1 = _mm_xor_si128(_mm_xor_si128(v_x1, v_y1), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 16u)));
+-      v_x2 = _mm_xor_si128(_mm_xor_si128(v_x2, v_y2), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 32u)));
+-      v_x3 = _mm_xor_si128(_mm_xor_si128(v_x3, v_y3), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 48u)));
+-      v_p.ptr += 64;
+-    }
+-    v_p.len = 0;
+-  }
+-  v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K3K4));
+-  v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u));
+-  v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u));
+-  v_x0 = _mm_xor_si128(v_x0, v_x1);
+-  v_x0 = _mm_xor_si128(v_x0, v_y0);
+-  v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u));
+-  v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u));
+-  v_x0 = _mm_xor_si128(v_x0, v_x2);
+-  v_x0 = _mm_xor_si128(v_x0, v_y0);
+-  v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u));
+-  v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u));
+-  v_x0 = _mm_xor_si128(v_x0, v_x3);
+-  v_x0 = _mm_xor_si128(v_x0, v_y0);
+-  v_x1 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(16u));
+-  v_x2 = _mm_set_epi32((int32_t)(0u), (int32_t)(4294967295u), (int32_t)(0u), (int32_t)(4294967295u));
+-  v_x0 = _mm_srli_si128(v_x0, (int32_t)(8u));
+-  v_x0 = _mm_xor_si128(v_x0, v_x1);
+-  v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K5ZZ));
+-  v_x1 = _mm_srli_si128(v_x0, (int32_t)(4u));
+-  v_x0 = _mm_and_si128(v_x0, v_x2);
+-  v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u));
+-  v_x0 = _mm_xor_si128(v_x0, v_x1);
+-  v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_PXMU));
+-  v_x1 = _mm_and_si128(v_x0, v_x2);
+-  v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(16u));
+-  v_x1 = _mm_and_si128(v_x1, v_x2);
+-  v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(0u));
+-  v_x0 = _mm_xor_si128(v_x0, v_x1);
+-  v_s = ((uint32_t)(_mm_extract_epi32(v_x0, (int32_t)(1u))));
+-  v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551552u);
+-  if (v_tail_index < ((uint64_t)(a_x.len))) {
+-    {
+-      wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index);
+-      v_p.ptr = i_slice_p.ptr;
+-      v_p.len = 1;
+-      uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len;
+-      while (v_p.ptr < i_end0_p) {
+-        v_s = (WUFFS_CRC32__IEEE_TABLE[0u][(((uint8_t)(v_s)) ^ v_p.ptr[0u])] ^ (v_s >> 8u));
+-        v_p.ptr += 1;
++      self->private_impl.f_channel_shifts[v_i] = ((uint8_t)((v_n & 31u)));
++      v_n = 0u;
++      while ((v_mask & 1u) == 1u) {
++        v_n += 1u;
++        v_mask >>= 1u;
+       }
+-      v_p.len = 0;
++      if ((v_mask != 0u) || (v_n > 32u)) {
++        status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
++        goto exit;
++      }
++      self->private_impl.f_channel_num_bits[v_i] = ((uint8_t)(v_n));
++    } else if (v_i != 3u) {
++      status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
++      goto exit;
+     }
++    v_i += 1u;
+   }
+-  self->private_impl.f_state = (4294967295u ^ v_s);
+-  return wuffs_base__make_empty_struct();
++
++  goto ok;
++  ok:
++  goto exit;
++  exit:
++  return status;
+ }
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC32)
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BMP)
+ 
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__DEFLATE)
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BZIP2)
+ 
+ // ---------------- Status Codes Implementations
+ 
+-const char wuffs_deflate__error__bad_huffman_code_over_subscribed[] = "#deflate: bad Huffman code (over-subscribed)";
+-const char wuffs_deflate__error__bad_huffman_code_under_subscribed[] = "#deflate: bad Huffman code (under-subscribed)";
+-const char wuffs_deflate__error__bad_huffman_code_length_count[] = "#deflate: bad Huffman code length count";
+-const char wuffs_deflate__error__bad_huffman_code_length_repetition[] = "#deflate: bad Huffman code length repetition";
+-const char wuffs_deflate__error__bad_huffman_code[] = "#deflate: bad Huffman code";
+-const char wuffs_deflate__error__bad_huffman_minimum_code_length[] = "#deflate: bad Huffman minimum code length";
+-const char wuffs_deflate__error__bad_block[] = "#deflate: bad block";
+-const char wuffs_deflate__error__bad_distance[] = "#deflate: bad distance";
+-const char wuffs_deflate__error__bad_distance_code_count[] = "#deflate: bad distance code count";
+-const char wuffs_deflate__error__bad_literal_length_code_count[] = "#deflate: bad literal/length code count";
+-const char wuffs_deflate__error__inconsistent_stored_block_length[] = "#deflate: inconsistent stored block length";
+-const char wuffs_deflate__error__missing_end_of_block_code[] = "#deflate: missing end-of-block code";
+-const char wuffs_deflate__error__no_huffman_codes[] = "#deflate: no Huffman codes";
+-const char wuffs_deflate__error__truncated_input[] = "#deflate: truncated input";
+-const char wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state[] = "#deflate: internal error: inconsistent Huffman decoder state";
+-const char wuffs_deflate__error__internal_error_inconsistent_i_o[] = "#deflate: internal error: inconsistent I/O";
+-const char wuffs_deflate__error__internal_error_inconsistent_distance[] = "#deflate: internal error: inconsistent distance";
+-const char wuffs_deflate__error__internal_error_inconsistent_n_bits[] = "#deflate: internal error: inconsistent n_bits";
++const char wuffs_bzip2__error__bad_huffman_code_over_subscribed[] = "#bzip2: bad Huffman code (over-subscribed)";
++const char wuffs_bzip2__error__bad_huffman_code_under_subscribed[] = "#bzip2: bad Huffman code (under-subscribed)";
++const char wuffs_bzip2__error__bad_block_header[] = "#bzip2: bad block header";
++const char wuffs_bzip2__error__bad_block_length[] = "#bzip2: bad block length";
++const char wuffs_bzip2__error__bad_checksum[] = "#bzip2: bad checksum";
++const char wuffs_bzip2__error__bad_header[] = "#bzip2: bad header";
++const char wuffs_bzip2__error__bad_number_of_sections[] = "#bzip2: bad number of sections";
++const char wuffs_bzip2__error__truncated_input[] = "#bzip2: truncated input";
++const char wuffs_bzip2__error__unsupported_block_randomization[] = "#bzip2: unsupported block randomization";
++const char wuffs_bzip2__error__internal_error_inconsistent_huffman_decoder_state[] = "#bzip2: internal error: inconsistent Huffman decoder state";
+ 
+ // ---------------- Private Consts
+ 
+ static const uint8_t
+-WUFFS_DEFLATE__CODE_ORDER[19] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  16, 17, 18, 0, 8, 7, 9, 6,
+-  10, 5, 11, 4, 12, 3, 13, 2,
+-  14, 1, 15,
+-};
+-
+-static const uint8_t
+-WUFFS_DEFLATE__REVERSE8[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  0, 128, 64, 192, 32, 160, 96, 224,
+-  16, 144, 80, 208, 48, 176, 112, 240,
+-  8, 136, 72, 200, 40, 168, 104, 232,
+-  24, 152, 88, 216, 56, 184, 120, 248,
+-  4, 132, 68, 196, 36, 164, 100, 228,
+-  20, 148, 84, 212, 52, 180, 116, 244,
+-  12, 140, 76, 204, 44, 172, 108, 236,
+-  28, 156, 92, 220, 60, 188, 124, 252,
+-  2, 130, 66, 194, 34, 162, 98, 226,
+-  18, 146, 82, 210, 50, 178, 114, 242,
+-  10, 138, 74, 202, 42, 170, 106, 234,
+-  26, 154, 90, 218, 58, 186, 122, 250,
+-  6, 134, 70, 198, 38, 166, 102, 230,
+-  22, 150, 86, 214, 54, 182, 118, 246,
+-  14, 142, 78, 206, 46, 174, 110, 238,
+-  30, 158, 94, 222, 62, 190, 126, 254,
+-  1, 129, 65, 193, 33, 161, 97, 225,
+-  17, 145, 81, 209, 49, 177, 113, 241,
+-  9, 137, 73, 201, 41, 169, 105, 233,
+-  25, 153, 89, 217, 57, 185, 121, 249,
+-  5, 133, 69, 197, 37, 165, 101, 229,
+-  21, 149, 85, 213, 53, 181, 117, 245,
+-  13, 141, 77, 205, 45, 173, 109, 237,
+-  29, 157, 93, 221, 61, 189, 125, 253,
+-  3, 131, 67, 195, 35, 163, 99, 227,
+-  19, 147, 83, 211, 51, 179, 115, 243,
+-  11, 139, 75, 203, 43, 171, 107, 235,
+-  27, 155, 91, 219, 59, 187, 123, 251,
+-  7, 135, 71, 199, 39, 167, 103, 231,
+-  23, 151, 87, 215, 55, 183, 119, 247,
+-  15, 143, 79, 207, 47, 175, 111, 239,
+-  31, 159, 95, 223, 63, 191, 127, 255,
+-};
+-
+-static const uint32_t
+-WUFFS_DEFLATE__LCODE_MAGIC_NUMBERS[32] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  1073741824, 1073742080, 1073742336, 1073742592, 1073742848, 1073743104, 1073743360, 1073743616,
+-  1073743888, 1073744400, 1073744912, 1073745424, 1073745952, 1073746976, 1073748000, 1073749024,
+-  1073750064, 1073752112, 1073754160, 1073756208, 1073758272, 1073762368, 1073766464, 1073770560,
+-  1073774672, 1073782864, 1073791056, 1073799248, 1073807104, 134217728, 134217728, 134217728,
++WUFFS_BZIP2__CLAMP_TO_5[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 1u, 2u, 3u, 4u, 5u, 5u, 5u,
+ };
+ 
+ static const uint32_t
+-WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[32] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  1073741824, 1073742080, 1073742336, 1073742592, 1073742864, 1073743376, 1073743904, 1073744928,
+-  1073745968, 1073748016, 1073750080, 1073754176, 1073758288, 1073766480, 1073774688, 1073791072,
+-  1073807472, 1073840240, 1073873024, 1073938560, 1074004112, 1074135184, 1074266272, 1074528416,
+-  1074790576, 1075314864, 1075839168, 1076887744, 1077936336, 1080033488, 134217728, 134217728,
++WUFFS_BZIP2__REV_CRC32_TABLE[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 79764919u, 159529838u, 222504665u, 319059676u, 398814059u, 445009330u, 507990021u,
++  638119352u, 583659535u, 797628118u, 726387553u, 890018660u, 835552979u, 1015980042u, 944750013u,
++  1276238704u, 1221641927u, 1167319070u, 1095957929u, 1595256236u, 1540665371u, 1452775106u, 1381403509u,
++  1780037320u, 1859660671u, 1671105958u, 1733955601u, 2031960084u, 2111593891u, 1889500026u, 1952343757u,
++  2552477408u, 2632100695u, 2443283854u, 2506133561u, 2334638140u, 2414271883u, 2191915858u, 2254759653u,
++  3190512472u, 3135915759u, 3081330742u, 3009969537u, 2905550212u, 2850959411u, 2762807018u, 2691435357u,
++  3560074640u, 3505614887u, 3719321342u, 3648080713u, 3342211916u, 3287746299u, 3467911202u, 3396681109u,
++  4063920168u, 4143685023u, 4223187782u, 4286162673u, 3779000052u, 3858754371u, 3904687514u, 3967668269u,
++  881225847u, 809987520u, 1023691545u, 969234094u, 662832811u, 591600412u, 771767749u, 717299826u,
++  311336399u, 374308984u, 453813921u, 533576470u, 25881363u, 88864420u, 134795389u, 214552010u,
++  2023205639u, 2086057648u, 1897238633u, 1976864222u, 1804852699u, 1867694188u, 1645340341u, 1724971778u,
++  1587496639u, 1516133128u, 1461550545u, 1406951526u, 1302016099u, 1230646740u, 1142491917u, 1087903418u,
++  2896545431u, 2825181984u, 2770861561u, 2716262478u, 3215044683u, 3143675388u, 3055782693u, 3001194130u,
++  2326604591u, 2389456536u, 2200899649u, 2280525302u, 2578013683u, 2640855108u, 2418763421u, 2498394922u,
++  3769900519u, 3832873040u, 3912640137u, 3992402750u, 4088425275u, 4151408268u, 4197601365u, 4277358050u,
++  3334271071u, 3263032808u, 3476998961u, 3422541446u, 3585640067u, 3514407732u, 3694837229u, 3640369242u,
++  1762451694u, 1842216281u, 1619975040u, 1682949687u, 2047383090u, 2127137669u, 1938468188u, 2001449195u,
++  1325665622u, 1271206113u, 1183200824u, 1111960463u, 1543535498u, 1489069629u, 1434599652u, 1363369299u,
++  622672798u, 568075817u, 748617968u, 677256519u, 907627842u, 853037301u, 1067152940u, 995781531u,
++  51762726u, 131386257u, 177728840u, 240578815u, 269590778u, 349224269u, 429104020u, 491947555u,
++  4046411278u, 4126034873u, 4172115296u, 4234965207u, 3794477266u, 3874110821u, 3953728444u, 4016571915u,
++  3609705398u, 3555108353u, 3735388376u, 3664026991u, 3290680682u, 3236090077u, 3449943556u, 3378572211u,
++  3174993278u, 3120533705u, 3032266256u, 2961025959u, 2923101090u, 2868635157u, 2813903052u, 2742672763u,
++  2604032198u, 2683796849u, 2461293480u, 2524268063u, 2284983834u, 2364738477u, 2175806836u, 2238787779u,
++  1569362073u, 1498123566u, 1409854455u, 1355396672u, 1317987909u, 1246755826u, 1192025387u, 1137557660u,
++  2072149281u, 2135122070u, 1912620623u, 1992383480u, 1753615357u, 1816598090u, 1627664531u, 1707420964u,
++  295390185u, 358241886u, 404320391u, 483945776u, 43990325u, 106832002u, 186451547u, 266083308u,
++  932423249u, 861060070u, 1041341759u, 986742920u, 613929101u, 542559546u, 756411363u, 701822548u,
++  3316196985u, 3244833742u, 3425377559u, 3370778784u, 3601682597u, 3530312978u, 3744426955u, 3689838204u,
++  3819031489u, 3881883254u, 3928223919u, 4007849240u, 4037393693u, 4100235434u, 4180117107u, 4259748804u,
++  2310601993u, 2373574846u, 2151335527u, 2231098320u, 2596047829u, 2659030626u, 2470359227u, 2550115596u,
++  2947551409u, 2876312838u, 2788305887u, 2733848168u, 3165939309u, 3094707162u, 3040238851u, 2985771188u,
+ };
+ 
+-#define WUFFS_DEFLATE__HUFFS_TABLE_SIZE 1024
+-
+-#define WUFFS_DEFLATE__HUFFS_TABLE_MASK 1023
+-
+ // ---------------- Private Initializer Prototypes
+ 
+ // ---------------- Private Function Prototypes
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_deflate__decoder__do_transform_io(
+-    wuffs_deflate__decoder* self,
++wuffs_bzip2__decoder__do_transform_io(
++    wuffs_bzip2__decoder* self,
+     wuffs_base__io_buffer* a_dst,
+     wuffs_base__io_buffer* a_src,
+     wuffs_base__slice_u8 a_workbuf);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_deflate__decoder__decode_blocks(
+-    wuffs_deflate__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
++wuffs_bzip2__decoder__prepare_block(
++    wuffs_bzip2__decoder* self,
+     wuffs_base__io_buffer* a_src);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_deflate__decoder__decode_uncompressed(
+-    wuffs_deflate__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
++wuffs_bzip2__decoder__read_code_lengths(
++    wuffs_bzip2__decoder* self,
+     wuffs_base__io_buffer* a_src);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_deflate__decoder__init_fixed_huffman(
+-    wuffs_deflate__decoder* self);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_deflate__decoder__init_dynamic_huffman(
+-    wuffs_deflate__decoder* self,
+-    wuffs_base__io_buffer* a_src);
++wuffs_bzip2__decoder__build_huffman_tree(
++    wuffs_bzip2__decoder* self,
++    uint32_t a_which);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_deflate__decoder__init_huff(
+-    wuffs_deflate__decoder* self,
+-    uint32_t a_which,
+-    uint32_t a_n_codes0,
+-    uint32_t a_n_codes1,
+-    uint32_t a_base_symbol);
++static wuffs_base__empty_struct
++wuffs_bzip2__decoder__build_huffman_table(
++    wuffs_bzip2__decoder* self,
++    uint32_t a_which);
+ 
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_deflate__decoder__decode_huffman_bmi2(
+-    wuffs_deflate__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src);
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
++static wuffs_base__empty_struct
++wuffs_bzip2__decoder__invert_bwt(
++    wuffs_bzip2__decoder* self);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_deflate__decoder__decode_huffman_fast32(
+-    wuffs_deflate__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src);
++static wuffs_base__empty_struct
++wuffs_bzip2__decoder__flush_fast(
++    wuffs_bzip2__decoder* self,
++    wuffs_base__io_buffer* a_dst);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_deflate__decoder__decode_huffman_fast64(
+-    wuffs_deflate__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src);
++wuffs_bzip2__decoder__flush_slow(
++    wuffs_bzip2__decoder* self,
++    wuffs_base__io_buffer* a_dst);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_deflate__decoder__decode_huffman_fast64__choosy_default(
+-    wuffs_deflate__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
++wuffs_bzip2__decoder__decode_huffman_fast(
++    wuffs_bzip2__decoder* self,
+     wuffs_base__io_buffer* a_src);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_deflate__decoder__decode_huffman_slow(
+-    wuffs_deflate__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
++wuffs_bzip2__decoder__decode_huffman_slow(
++    wuffs_bzip2__decoder* self,
+     wuffs_base__io_buffer* a_src);
+ 
+ // ---------------- VTables
+ 
+ const wuffs_base__io_transformer__func_ptrs
+-wuffs_deflate__decoder__func_ptrs_for__wuffs_base__io_transformer = {
++wuffs_bzip2__decoder__func_ptrs_for__wuffs_base__io_transformer = {
++  (wuffs_base__optional_u63(*)(const void*))(&wuffs_bzip2__decoder__dst_history_retain_length),
+   (uint64_t(*)(const void*,
+-      uint32_t))(&wuffs_deflate__decoder__get_quirk),
+-  (uint64_t(*)(const void*))(&wuffs_deflate__decoder__history_retain_length),
++      uint32_t))(&wuffs_bzip2__decoder__get_quirk),
+   (wuffs_base__status(*)(void*,
+       uint32_t,
+-      uint64_t))(&wuffs_deflate__decoder__set_quirk),
++      uint64_t))(&wuffs_bzip2__decoder__set_quirk),
+   (wuffs_base__status(*)(void*,
+       wuffs_base__io_buffer*,
+       wuffs_base__io_buffer*,
+-      wuffs_base__slice_u8))(&wuffs_deflate__decoder__transform_io),
+-  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_deflate__decoder__workbuf_len),
++      wuffs_base__slice_u8))(&wuffs_bzip2__decoder__transform_io),
++  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_bzip2__decoder__workbuf_len),
+ };
+ 
+ // ---------------- Initializer Implementations
+ 
+ wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_deflate__decoder__initialize(
+-    wuffs_deflate__decoder* self,
++wuffs_bzip2__decoder__initialize(
++    wuffs_bzip2__decoder* self,
+     size_t sizeof_star_self,
+     uint64_t wuffs_version,
+     uint32_t options){
+@@ -34263,25 +34215,23 @@ wuffs_deflate__decoder__initialize(
+     }
+   }
+ 
+-  self->private_impl.choosy_decode_huffman_fast64 = &wuffs_deflate__decoder__decode_huffman_fast64__choosy_default;
+-
+   self->private_impl.magic = WUFFS_BASE__MAGIC;
+   self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
+       wuffs_base__io_transformer__vtable_name;
+   self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
+-      (const void*)(&wuffs_deflate__decoder__func_ptrs_for__wuffs_base__io_transformer);
++      (const void*)(&wuffs_bzip2__decoder__func_ptrs_for__wuffs_base__io_transformer);
+   return wuffs_base__make_status(NULL);
+ }
+ 
+-wuffs_deflate__decoder*
+-wuffs_deflate__decoder__alloc(void) {
+-  wuffs_deflate__decoder* x =
+-      (wuffs_deflate__decoder*)(calloc(sizeof(wuffs_deflate__decoder), 1));
++wuffs_bzip2__decoder*
++wuffs_bzip2__decoder__alloc(void) {
++  wuffs_bzip2__decoder* x =
++      (wuffs_bzip2__decoder*)(calloc(1, sizeof(wuffs_bzip2__decoder)));
+   if (!x) {
+     return NULL;
+   }
+-  if (wuffs_deflate__decoder__initialize(
+-      x, sizeof(wuffs_deflate__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++  if (wuffs_bzip2__decoder__initialize(
++      x, sizeof(wuffs_bzip2__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
+     free(x);
+     return NULL;
+   }
+@@ -34289,59 +34239,18 @@ wuffs_deflate__decoder__alloc(void) {
+ }
+ 
+ size_t
+-sizeof__wuffs_deflate__decoder(void) {
+-  return sizeof(wuffs_deflate__decoder);
++sizeof__wuffs_bzip2__decoder(void) {
++  return sizeof(wuffs_bzip2__decoder);
+ }
+ 
+ // ---------------- Function Implementations
+ 
+-// -------- func deflate.decoder.add_history
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_deflate__decoder__add_history(
+-    wuffs_deflate__decoder* self,
+-    wuffs_base__slice_u8 a_hist) {
+-  if (!self) {
+-    return wuffs_base__make_empty_struct();
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_empty_struct();
+-  }
+-
+-  wuffs_base__slice_u8 v_s = {0};
+-  uint64_t v_n_copied = 0;
+-  uint32_t v_already_full = 0;
+-
+-  v_s = a_hist;
+-  if (((uint64_t)(v_s.len)) >= 32768u) {
+-    v_s = wuffs_base__slice_u8__suffix(v_s, 32768u);
+-    wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_history, 32768), v_s);
+-    self->private_impl.f_history_index = 32768u;
+-  } else {
+-    v_n_copied = wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_history, (self->private_impl.f_history_index & 32767u), 32768), v_s);
+-    if (v_n_copied < ((uint64_t)(v_s.len))) {
+-      v_s = wuffs_base__slice_u8__subslice_i(v_s, v_n_copied);
+-      v_n_copied = wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_history, 32768), v_s);
+-      self->private_impl.f_history_index = (((uint32_t)((v_n_copied & 32767u))) + 32768u);
+-    } else {
+-      v_already_full = 0u;
+-      if (self->private_impl.f_history_index >= 32768u) {
+-        v_already_full = 32768u;
+-      }
+-      self->private_impl.f_history_index = ((self->private_impl.f_history_index & 32767u) + ((uint32_t)((v_n_copied & 32767u))) + v_already_full);
+-    }
+-  }
+-  wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_history, 32768, 33025), wuffs_base__make_slice_u8(self->private_data.f_history, 33025));
+-  return wuffs_base__make_empty_struct();
+-}
+-
+-// -------- func deflate.decoder.get_quirk
++// -------- func bzip2.decoder.get_quirk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_deflate__decoder__get_quirk(
+-    const wuffs_deflate__decoder* self,
++wuffs_bzip2__decoder__get_quirk(
++    const wuffs_bzip2__decoder* self,
+     uint32_t a_key) {
+   if (!self) {
+     return 0;
+@@ -34351,15 +34260,18 @@ wuffs_deflate__decoder__get_quirk(
+     return 0;
+   }
+ 
++  if ((a_key == 1u) && self->private_impl.f_ignore_checksum) {
++    return 1u;
++  }
+   return 0u;
+ }
+ 
+-// -------- func deflate.decoder.set_quirk
++// -------- func bzip2.decoder.set_quirk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_deflate__decoder__set_quirk(
+-    wuffs_deflate__decoder* self,
++wuffs_bzip2__decoder__set_quirk(
++    wuffs_bzip2__decoder* self,
+     uint32_t a_key,
+     uint64_t a_value) {
+   if (!self) {
+@@ -34372,32 +34284,36 @@ wuffs_deflate__decoder__set_quirk(
+         : wuffs_base__error__initialize_not_called);
+   }
+ 
++  if (a_key == 1u) {
++    self->private_impl.f_ignore_checksum = (a_value > 0u);
++    return wuffs_base__make_status(NULL);
++  }
+   return wuffs_base__make_status(wuffs_base__error__unsupported_option);
+ }
+ 
+-// -------- func deflate.decoder.history_retain_length
++// -------- func bzip2.decoder.dst_history_retain_length
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_deflate__decoder__history_retain_length(
+-    const wuffs_deflate__decoder* self) {
++WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
++wuffs_bzip2__decoder__dst_history_retain_length(
++    const wuffs_bzip2__decoder* self) {
+   if (!self) {
+-    return 0;
++    return wuffs_base__utility__make_optional_u63(false, 0u);
+   }
+   if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+       (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
++    return wuffs_base__utility__make_optional_u63(false, 0u);
+   }
+ 
+-  return 0u;
++  return wuffs_base__utility__make_optional_u63(true, 0u);
+ }
+ 
+-// -------- func deflate.decoder.workbuf_len
++// -------- func bzip2.decoder.workbuf_len
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_deflate__decoder__workbuf_len(
+-    const wuffs_deflate__decoder* self) {
++wuffs_bzip2__decoder__workbuf_len(
++    const wuffs_bzip2__decoder* self) {
+   if (!self) {
+     return wuffs_base__utility__empty_range_ii_u64();
+   }
+@@ -34406,15 +34322,15 @@ wuffs_deflate__decoder__workbuf_len(
+     return wuffs_base__utility__empty_range_ii_u64();
+   }
+ 
+-  return wuffs_base__utility__make_range_ii_u64(1u, 1u);
++  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
+ }
+ 
+-// -------- func deflate.decoder.transform_io
++// -------- func bzip2.decoder.transform_io
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_deflate__decoder__transform_io(
+-    wuffs_deflate__decoder* self,
++wuffs_bzip2__decoder__transform_io(
++    wuffs_bzip2__decoder* self,
+     wuffs_base__io_buffer* a_dst,
+     wuffs_base__io_buffer* a_src,
+     wuffs_base__slice_u8 a_workbuf) {
+@@ -34441,17 +34357,17 @@ wuffs_deflate__decoder__transform_io(
+ 
+   wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_transform_io[0];
++  uint32_t coro_susp_point = self->private_impl.p_transform_io;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+     while (true) {
+       {
+-        wuffs_base__status t_0 = wuffs_deflate__decoder__do_transform_io(self, a_dst, a_src, a_workbuf);
++        wuffs_base__status t_0 = wuffs_bzip2__decoder__do_transform_io(self, a_dst, a_src, a_workbuf);
+         v_status = t_0;
+       }
+       if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_deflate__error__truncated_input);
++        status = wuffs_base__make_status(wuffs_bzip2__error__truncated_input);
+         goto exit;
+       }
+       status = v_status;
+@@ -34459,13 +34375,13 @@ wuffs_deflate__decoder__transform_io(
+     }
+ 
+     ok:
+-    self->private_impl.p_transform_io[0] = 0;
++    self->private_impl.p_transform_io = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.p_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+   self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
+ 
+   goto exit;
+@@ -34476,103 +34392,22 @@ wuffs_deflate__decoder__transform_io(
+   return status;
+ }
+ 
+-// -------- func deflate.decoder.do_transform_io
++// -------- func bzip2.decoder.do_transform_io
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_deflate__decoder__do_transform_io(
+-    wuffs_deflate__decoder* self,
++wuffs_bzip2__decoder__do_transform_io(
++    wuffs_bzip2__decoder* self,
+     wuffs_base__io_buffer* a_dst,
+     wuffs_base__io_buffer* a_src,
+     wuffs_base__slice_u8 a_workbuf) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint64_t v_mark = 0;
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-
+-  uint8_t* iop_a_dst = NULL;
+-  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_dst && a_dst->data.ptr) {
+-    io0_a_dst = a_dst->data.ptr;
+-    io1_a_dst = io0_a_dst + a_dst->meta.wi;
+-    iop_a_dst = io1_a_dst;
+-    io2_a_dst = io0_a_dst + a_dst->data.len;
+-    if (a_dst->meta.closed) {
+-      io2_a_dst = iop_a_dst;
+-    }
+-  }
+-
+-  uint32_t coro_susp_point = self->private_impl.p_do_transform_io[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    self->private_impl.choosy_decode_huffman_fast64 = (
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-        wuffs_base__cpu_arch__have_x86_bmi2() ? &wuffs_deflate__decoder__decode_huffman_bmi2 :
+-#endif
+-        self->private_impl.choosy_decode_huffman_fast64);
+-    while (true) {
+-      v_mark = ((uint64_t)(iop_a_dst - io0_a_dst));
+-      {
+-        if (a_dst) {
+-          a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-        }
+-        wuffs_base__status t_0 = wuffs_deflate__decoder__decode_blocks(self, a_dst, a_src);
+-        v_status = t_0;
+-        if (a_dst) {
+-          iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
+-        }
+-      }
+-      if ( ! wuffs_base__status__is_suspension(&v_status)) {
+-        status = v_status;
+-        if (wuffs_base__status__is_error(&status)) {
+-          goto exit;
+-        } else if (wuffs_base__status__is_suspension(&status)) {
+-          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
+-          goto exit;
+-        }
+-        goto ok;
+-      }
+-      wuffs_base__u64__sat_add_indirect(&self->private_impl.f_transformed_history_count, wuffs_base__io__count_since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst))));
+-      wuffs_deflate__decoder__add_history(self, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+-    }
+-
+-    ok:
+-    self->private_impl.p_do_transform_io[0] = 0;
+-    goto exit;
+-  }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_do_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-
+-  goto exit;
+-  exit:
+-  if (a_dst && a_dst->data.ptr) {
+-    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-  }
+-
+-  return status;
+-}
+-
+-// -------- func deflate.decoder.decode_blocks
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_deflate__decoder__decode_blocks(
+-    wuffs_deflate__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  uint32_t v_final = 0;
+-  uint32_t v_b0 = 0;
+-  uint32_t v_type = 0;
++  uint8_t v_c8 = 0;
++  uint32_t v_i = 0;
++  uint64_t v_tag = 0;
+   wuffs_base__status v_status = wuffs_base__make_status(NULL);
++  uint32_t v_final_checksum_want = 0;
+ 
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -34585,125 +34420,206 @@ wuffs_deflate__decoder__decode_blocks(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_blocks[0];
++  uint32_t coro_susp_point = self->private_impl.p_do_transform_io;
+   if (coro_susp_point) {
+-    v_final = self->private_data.s_decode_blocks[0].v_final;
++    v_i = self->private_data.s_do_transform_io.v_i;
++    v_tag = self->private_data.s_do_transform_io.v_tag;
++    v_final_checksum_want = self->private_data.s_do_transform_io.v_final_checksum_want;
+   }
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    label__outer__continue:;
+-    while (v_final == 0u) {
+-      while (self->private_impl.f_n_bits < 3u) {
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_0 = *iop_a_src++;
++      v_c8 = t_0;
++    }
++    if (v_c8 != 66u) {
++      status = wuffs_base__make_status(wuffs_bzip2__error__bad_header);
++      goto exit;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_1 = *iop_a_src++;
++      v_c8 = t_1;
++    }
++    if (v_c8 != 90u) {
++      status = wuffs_base__make_status(wuffs_bzip2__error__bad_header);
++      goto exit;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_2 = *iop_a_src++;
++      v_c8 = t_2;
++    }
++    if (v_c8 != 104u) {
++      status = wuffs_base__make_status(wuffs_bzip2__error__bad_header);
++      goto exit;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_3 = *iop_a_src++;
++      v_c8 = t_3;
++    }
++    if ((v_c8 < 49u) || (57u < v_c8)) {
++      status = wuffs_base__make_status(wuffs_bzip2__error__bad_header);
++      goto exit;
++    }
++    self->private_impl.f_max_incl_block_size = (((uint32_t)(((uint8_t)(v_c8 - 48u)))) * 100000u);
++    while (true) {
++      v_tag = 0u;
++      v_i = 0u;
++      while (v_i < 48u) {
++        if (self->private_impl.f_n_bits <= 0u) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint8_t t_4 = *iop_a_src++;
++            v_c8 = t_4;
+           }
+-          uint32_t t_0 = *iop_a_src++;
+-          v_b0 = t_0;
++          self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
++          self->private_impl.f_n_bits = 8u;
+         }
+-        self->private_impl.f_bits |= (v_b0 << (self->private_impl.f_n_bits & 3u));
+-        self->private_impl.f_n_bits = ((self->private_impl.f_n_bits & 3u) + 8u);
++        v_tag <<= 1u;
++        v_tag |= ((uint64_t)((self->private_impl.f_bits >> 31u)));
++        self->private_impl.f_bits <<= 1u;
++        self->private_impl.f_n_bits -= 1u;
++        v_i += 1u;
+       }
+-      v_final = (self->private_impl.f_bits & 1u);
+-      v_type = ((self->private_impl.f_bits >> 1u) & 3u);
+-      self->private_impl.f_bits >>= 3u;
+-      self->private_impl.f_n_bits -= 3u;
+-      if (v_type == 0u) {
++      if (v_tag == 25779555029136u) {
++        break;
++      } else if (v_tag != 54156738319193u) {
++        status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
++        goto exit;
++      }
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++      status = wuffs_bzip2__decoder__prepare_block(self, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++      self->private_impl.f_block_size = 0u;
++      self->private_impl.f_decode_huffman_finished = false;
++      self->private_impl.f_decode_huffman_which = WUFFS_BZIP2__CLAMP_TO_5[((uint8_t)(self->private_data.f_huffman_selectors[0u] & 7u))];
++      self->private_impl.f_decode_huffman_ticks = 50u;
++      self->private_impl.f_decode_huffman_section = 0u;
++      self->private_impl.f_decode_huffman_run_shift = 0u;
++      while ( ! self->private_impl.f_decode_huffman_finished) {
+         if (a_src) {
+           a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+         }
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-        status = wuffs_deflate__decoder__decode_uncompressed(self, a_dst, a_src);
++        v_status = wuffs_bzip2__decoder__decode_huffman_fast(self, a_src);
+         if (a_src) {
+           iop_a_src = a_src->data.ptr + a_src->meta.ri;
+         }
+-        if (status.repr) {
+-          goto suspend;
+-        }
+-        continue;
+-      } else if (v_type == 1u) {
+-        v_status = wuffs_deflate__decoder__init_fixed_huffman(self);
+-        if ( ! wuffs_base__status__is_ok(&v_status)) {
++        if (wuffs_base__status__is_error(&v_status)) {
+           status = v_status;
+-          if (wuffs_base__status__is_error(&status)) {
+-            goto exit;
+-          } else if (wuffs_base__status__is_suspension(&status)) {
+-            status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
+-            goto exit;
+-          }
+-          goto ok;
++          goto exit;
++        } else if (self->private_impl.f_decode_huffman_finished) {
++          break;
+         }
+-      } else if (v_type == 2u) {
+         if (a_src) {
+           a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+         }
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-        status = wuffs_deflate__decoder__init_dynamic_huffman(self, a_src);
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++        status = wuffs_bzip2__decoder__decode_huffman_slow(self, a_src);
+         if (a_src) {
+           iop_a_src = a_src->data.ptr + a_src->meta.ri;
+         }
+         if (status.repr) {
+           goto suspend;
+         }
+-      } else {
+-        status = wuffs_base__make_status(wuffs_deflate__error__bad_block);
++      }
++      wuffs_bzip2__decoder__invert_bwt(self);
++      self->private_impl.f_block_checksum_have = 4294967295u;
++      if (self->private_impl.f_original_pointer >= self->private_impl.f_block_size) {
++        status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
+         goto exit;
+       }
+-      self->private_impl.f_end_of_block = false;
+-      while (true) {
+-        if (sizeof(void*) == 4u) {
+-          if (a_src) {
+-            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-          }
+-          v_status = wuffs_deflate__decoder__decode_huffman_fast32(self, a_dst, a_src);
+-          if (a_src) {
+-            iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-          }
+-        } else {
+-          if (a_src) {
+-            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-          }
+-          v_status = wuffs_deflate__decoder__decode_huffman_fast64(self, a_dst, a_src);
+-          if (a_src) {
+-            iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-          }
+-        }
+-        if (wuffs_base__status__is_error(&v_status)) {
+-          status = v_status;
+-          goto exit;
+-        }
+-        if (self->private_impl.f_end_of_block) {
+-          goto label__outer__continue;
+-        }
+-        if (a_src) {
+-          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-        }
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-        status = wuffs_deflate__decoder__decode_huffman_slow(self, a_dst, a_src);
+-        if (a_src) {
+-          iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      self->private_impl.f_flush_pointer = (self->private_data.f_bwt[self->private_impl.f_original_pointer] >> 12u);
++      self->private_impl.f_flush_repeat_count = 0u;
++      self->private_impl.f_flush_prev = 0u;
++      while (self->private_impl.f_block_size > 0u) {
++        wuffs_bzip2__decoder__flush_fast(self, a_dst);
++        if (self->private_impl.f_block_size <= 0u) {
++          break;
+         }
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++        status = wuffs_bzip2__decoder__flush_slow(self, a_dst);
+         if (status.repr) {
+           goto suspend;
+         }
+-        if (self->private_impl.f_end_of_block) {
+-          goto label__outer__continue;
++      }
++      self->private_impl.f_block_checksum_have ^= 4294967295u;
++      if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_block_checksum_have != self->private_impl.f_block_checksum_want)) {
++        status = wuffs_base__make_status(wuffs_bzip2__error__bad_checksum);
++        goto exit;
++      }
++      self->private_impl.f_final_checksum_have = (self->private_impl.f_block_checksum_have ^ ((self->private_impl.f_final_checksum_have >> 31u) | ((uint32_t)(self->private_impl.f_final_checksum_have << 1u))));
++    }
++    v_final_checksum_want = 0u;
++    v_i = 0u;
++    while (v_i < 32u) {
++      if (self->private_impl.f_n_bits <= 0u) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_5 = *iop_a_src++;
++          v_c8 = t_5;
+         }
++        self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
++        self->private_impl.f_n_bits = 8u;
+       }
++      v_final_checksum_want <<= 1u;
++      v_final_checksum_want |= (self->private_impl.f_bits >> 31u);
++      self->private_impl.f_bits <<= 1u;
++      self->private_impl.f_n_bits -= 1u;
++      v_i += 1u;
++    }
++    if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_final_checksum_have != v_final_checksum_want)) {
++      status = wuffs_base__make_status(wuffs_bzip2__error__bad_checksum);
++      goto exit;
+     }
+ 
++    goto ok;
+     ok:
+-    self->private_impl.p_decode_blocks[0] = 0;
++    self->private_impl.p_do_transform_io = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_blocks[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_decode_blocks[0].v_final = v_final;
++  self->private_impl.p_do_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_do_transform_io.v_i = v_i;
++  self->private_data.s_do_transform_io.v_tag = v_tag;
++  self->private_data.s_do_transform_io.v_final_checksum_want = v_final_checksum_want;
+ 
+   goto exit;
+   exit:
+@@ -34714,32 +34630,23 @@ wuffs_deflate__decoder__decode_blocks(
+   return status;
+ }
+ 
+-// -------- func deflate.decoder.decode_uncompressed
++// -------- func bzip2.decoder.prepare_block
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_deflate__decoder__decode_uncompressed(
+-    wuffs_deflate__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
++wuffs_bzip2__decoder__prepare_block(
++    wuffs_bzip2__decoder* self,
+     wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t v_length = 0;
+-  uint32_t v_n_copied = 0;
++  uint8_t v_c8 = 0;
++  uint32_t v_i = 0;
++  uint32_t v_j = 0;
++  uint32_t v_selector = 0;
++  uint32_t v_sel_ff = 0;
++  uint8_t v_movee = 0;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-  uint8_t* iop_a_dst = NULL;
+-  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_dst && a_dst->data.ptr) {
+-    io0_a_dst = a_dst->data.ptr;
+-    io1_a_dst = io0_a_dst + a_dst->meta.wi;
+-    iop_a_dst = io1_a_dst;
+-    io2_a_dst = io0_a_dst + a_dst->data.len;
+-    if (a_dst->meta.closed) {
+-      io2_a_dst = iop_a_dst;
+-    }
+-  }
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -34751,387 +34658,287 @@ wuffs_deflate__decoder__decode_uncompressed(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_uncompressed[0];
++  uint32_t coro_susp_point = self->private_impl.p_prepare_block;
+   if (coro_susp_point) {
+-    v_length = self->private_data.s_decode_uncompressed[0].v_length;
++    v_i = self->private_data.s_prepare_block.v_i;
++    v_selector = self->private_data.s_prepare_block.v_selector;
+   }
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
+-      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
+-      goto exit;
+-    }
+-    self->private_impl.f_n_bits = 0u;
+-    self->private_impl.f_bits = 0u;
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      uint32_t t_0;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-        iop_a_src += 4;
+-      } else {
+-        self->private_data.s_decode_uncompressed[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-        while (true) {
++    self->private_impl.f_block_checksum_want = 0u;
++    v_i = 0u;
++    while (v_i < 32u) {
++      if (self->private_impl.f_n_bits <= 0u) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint64_t* scratch = &self->private_data.s_decode_uncompressed[0].scratch;
+-          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
+-          *scratch <<= 8;
+-          *scratch >>= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
+-          if (num_bits_0 == 24) {
+-            t_0 = ((uint32_t)(*scratch));
+-            break;
+-          }
+-          num_bits_0 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_0)) << 56;
++          uint8_t t_0 = *iop_a_src++;
++          v_c8 = t_0;
+         }
++        self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
++        self->private_impl.f_n_bits = 8u;
+       }
+-      v_length = t_0;
+-    }
+-    if ((((v_length) & 0xFFFFu) + ((v_length) >> (32u - 16u))) != 65535u) {
+-      status = wuffs_base__make_status(wuffs_deflate__error__inconsistent_stored_block_length);
+-      goto exit;
+-    }
+-    v_length = ((v_length) & 0xFFFFu);
+-    while (true) {
+-      v_n_copied = wuffs_base__io_writer__limited_copy_u32_from_reader(
+-          &iop_a_dst, io2_a_dst,v_length, &iop_a_src, io2_a_src);
+-      if (v_length <= v_n_copied) {
+-        status = wuffs_base__make_status(NULL);
+-        goto ok;
+-      }
+-      v_length -= v_n_copied;
+-      if (((uint64_t)(io2_a_dst - iop_a_dst)) == 0u) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
+-      } else {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
+-      }
++      self->private_impl.f_block_checksum_want <<= 1u;
++      self->private_impl.f_block_checksum_want |= (self->private_impl.f_bits >> 31u);
++      self->private_impl.f_bits <<= 1u;
++      self->private_impl.f_n_bits -= 1u;
++      v_i += 1u;
+     }
+-
+-    ok:
+-    self->private_impl.p_decode_uncompressed[0] = 0;
+-    goto exit;
+-  }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_uncompressed[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_decode_uncompressed[0].v_length = v_length;
+-
+-  goto exit;
+-  exit:
+-  if (a_dst && a_dst->data.ptr) {
+-    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-  }
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
+-
+-  return status;
+-}
+-
+-// -------- func deflate.decoder.init_fixed_huffman
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_deflate__decoder__init_fixed_huffman(
+-    wuffs_deflate__decoder* self) {
+-  uint32_t v_i = 0;
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-
+-  while (v_i < 144u) {
+-    self->private_data.f_code_lengths[v_i] = 8u;
+-    v_i += 1u;
+-  }
+-  while (v_i < 256u) {
+-    self->private_data.f_code_lengths[v_i] = 9u;
+-    v_i += 1u;
+-  }
+-  while (v_i < 280u) {
+-    self->private_data.f_code_lengths[v_i] = 7u;
+-    v_i += 1u;
+-  }
+-  while (v_i < 288u) {
+-    self->private_data.f_code_lengths[v_i] = 8u;
+-    v_i += 1u;
+-  }
+-  while (v_i < 320u) {
+-    self->private_data.f_code_lengths[v_i] = 5u;
+-    v_i += 1u;
+-  }
+-  v_status = wuffs_deflate__decoder__init_huff(self,
+-      0u,
+-      0u,
+-      288u,
+-      257u);
+-  if (wuffs_base__status__is_error(&v_status)) {
+-    return v_status;
+-  }
+-  v_status = wuffs_deflate__decoder__init_huff(self,
+-      1u,
+-      288u,
+-      320u,
+-      0u);
+-  if (wuffs_base__status__is_error(&v_status)) {
+-    return v_status;
+-  }
+-  return wuffs_base__make_status(NULL);
+-}
+-
+-// -------- func deflate.decoder.init_dynamic_huffman
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_deflate__decoder__init_dynamic_huffman(
+-    wuffs_deflate__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  uint32_t v_bits = 0;
+-  uint32_t v_n_bits = 0;
+-  uint32_t v_b0 = 0;
+-  uint32_t v_n_lit = 0;
+-  uint32_t v_n_dist = 0;
+-  uint32_t v_n_clen = 0;
+-  uint32_t v_i = 0;
+-  uint32_t v_b1 = 0;
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-  uint32_t v_mask = 0;
+-  uint32_t v_table_entry = 0;
+-  uint32_t v_table_entry_n_bits = 0;
+-  uint32_t v_b2 = 0;
+-  uint32_t v_n_extra_bits = 0;
+-  uint8_t v_rep_symbol = 0;
+-  uint32_t v_rep_count = 0;
+-  uint32_t v_b3 = 0;
+-
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
+-
+-  uint32_t coro_susp_point = self->private_impl.p_init_dynamic_huffman[0];
+-  if (coro_susp_point) {
+-    v_bits = self->private_data.s_init_dynamic_huffman[0].v_bits;
+-    v_n_bits = self->private_data.s_init_dynamic_huffman[0].v_n_bits;
+-    v_n_lit = self->private_data.s_init_dynamic_huffman[0].v_n_lit;
+-    v_n_dist = self->private_data.s_init_dynamic_huffman[0].v_n_dist;
+-    v_n_clen = self->private_data.s_init_dynamic_huffman[0].v_n_clen;
+-    v_i = self->private_data.s_init_dynamic_huffman[0].v_i;
+-    v_mask = self->private_data.s_init_dynamic_huffman[0].v_mask;
+-    v_n_extra_bits = self->private_data.s_init_dynamic_huffman[0].v_n_extra_bits;
+-    v_rep_symbol = self->private_data.s_init_dynamic_huffman[0].v_rep_symbol;
+-    v_rep_count = self->private_data.s_init_dynamic_huffman[0].v_rep_count;
+-  }
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    v_bits = self->private_impl.f_bits;
+-    v_n_bits = self->private_impl.f_n_bits;
+-    while (v_n_bits < 14u) {
++    if (self->private_impl.f_n_bits <= 0u) {
+       {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+         if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+           status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+           goto suspend;
+         }
+-        uint32_t t_0 = *iop_a_src++;
+-        v_b0 = t_0;
++        uint8_t t_1 = *iop_a_src++;
++        v_c8 = t_1;
+       }
+-      v_bits |= (v_b0 << v_n_bits);
+-      v_n_bits += 8u;
+-    }
+-    v_n_lit = (((v_bits) & 0x1Fu) + 257u);
+-    if (v_n_lit > 286u) {
+-      status = wuffs_base__make_status(wuffs_deflate__error__bad_literal_length_code_count);
+-      goto exit;
++      self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
++      self->private_impl.f_n_bits = 8u;
+     }
+-    v_bits >>= 5u;
+-    v_n_dist = (((v_bits) & 0x1Fu) + 1u);
+-    if (v_n_dist > 30u) {
+-      status = wuffs_base__make_status(wuffs_deflate__error__bad_distance_code_count);
++    if ((self->private_impl.f_bits >> 31u) != 0u) {
++      status = wuffs_base__make_status(wuffs_bzip2__error__unsupported_block_randomization);
+       goto exit;
+     }
+-    v_bits >>= 5u;
+-    v_n_clen = (((v_bits) & 0xFu) + 4u);
+-    v_bits >>= 4u;
+-    v_n_bits -= 14u;
++    self->private_impl.f_bits <<= 1u;
++    self->private_impl.f_n_bits -= 1u;
++    self->private_impl.f_original_pointer = 0u;
+     v_i = 0u;
+-    while (v_i < v_n_clen) {
+-      while (v_n_bits < 3u) {
++    while (v_i < 24u) {
++      if (self->private_impl.f_n_bits <= 0u) {
+         {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint32_t t_1 = *iop_a_src++;
+-          v_b1 = t_1;
++          uint8_t t_2 = *iop_a_src++;
++          v_c8 = t_2;
+         }
+-        v_bits |= (v_b1 << v_n_bits);
+-        v_n_bits += 8u;
++        self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
++        self->private_impl.f_n_bits = 8u;
+       }
+-      self->private_data.f_code_lengths[WUFFS_DEFLATE__CODE_ORDER[v_i]] = ((uint8_t)((v_bits & 7u)));
+-      v_bits >>= 3u;
+-      v_n_bits -= 3u;
++      self->private_impl.f_original_pointer <<= 1u;
++      self->private_impl.f_original_pointer |= (self->private_impl.f_bits >> 31u);
++      self->private_impl.f_bits <<= 1u;
++      self->private_impl.f_n_bits -= 1u;
+       v_i += 1u;
+     }
+-    while (v_i < 19u) {
+-      self->private_data.f_code_lengths[WUFFS_DEFLATE__CODE_ORDER[v_i]] = 0u;
++    v_i = 0u;
++    while (v_i < 256u) {
++      self->private_data.f_presence[v_i] = 0u;
+       v_i += 1u;
+     }
+-    v_status = wuffs_deflate__decoder__init_huff(self,
+-        0u,
+-        0u,
+-        19u,
+-        4095u);
+-    if (wuffs_base__status__is_error(&v_status)) {
+-      status = v_status;
+-      goto exit;
+-    }
+-    v_mask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u);
+     v_i = 0u;
+-    while (v_i < (v_n_lit + v_n_dist)) {
+-      while (true) {
+-        v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_mask)];
+-        v_table_entry_n_bits = (v_table_entry & 15u);
+-        if (v_n_bits >= v_table_entry_n_bits) {
+-          v_bits >>= v_table_entry_n_bits;
+-          v_n_bits -= v_table_entry_n_bits;
+-          break;
+-        }
++    while (v_i < 256u) {
++      if (self->private_impl.f_n_bits <= 0u) {
+         {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint32_t t_2 = *iop_a_src++;
+-          v_b2 = t_2;
++          uint8_t t_3 = *iop_a_src++;
++          v_c8 = t_3;
+         }
+-        v_bits |= (v_b2 << v_n_bits);
+-        v_n_bits += 8u;
++        self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
++        self->private_impl.f_n_bits = 8u;
+       }
+-      if ((v_table_entry >> 24u) != 128u) {
+-        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-        goto exit;
++      if ((self->private_impl.f_bits >> 31u) != 0u) {
++        self->private_data.f_presence[v_i] = 1u;
+       }
+-      v_table_entry = ((v_table_entry >> 8u) & 255u);
+-      if (v_table_entry < 16u) {
+-        self->private_data.f_code_lengths[v_i] = ((uint8_t)(v_table_entry));
+-        v_i += 1u;
++      self->private_impl.f_bits <<= 1u;
++      self->private_impl.f_n_bits -= 1u;
++      v_i += 16u;
++    }
++    self->private_data.f_scratch = 0u;
++    v_i = 0u;
++    while (v_i < 256u) {
++      if (self->private_data.f_presence[v_i] == 0u) {
++        v_i += 16u;
+         continue;
+       }
+-      v_n_extra_bits = 0u;
+-      v_rep_symbol = 0u;
+-      v_rep_count = 0u;
+-      if (v_table_entry == 16u) {
+-        v_n_extra_bits = 2u;
+-        if (v_i <= 0u) {
+-          status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_length_repetition);
+-          goto exit;
++      while (true) {
++        if (self->private_impl.f_n_bits <= 0u) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint8_t t_4 = *iop_a_src++;
++            v_c8 = t_4;
++          }
++          self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
++          self->private_impl.f_n_bits = 8u;
++        }
++        self->private_data.f_scratch += (self->private_impl.f_bits >> 31u);
++        self->private_data.f_presence[(v_i & 255u)] = ((uint8_t)((self->private_impl.f_bits >> 31u)));
++        self->private_impl.f_bits <<= 1u;
++        self->private_impl.f_n_bits -= 1u;
++        v_i += 1u;
++        if ((v_i & 15u) == 0u) {
++          break;
+         }
+-        v_rep_symbol = (self->private_data.f_code_lengths[(v_i - 1u)] & 15u);
+-        v_rep_count = 3u;
+-      } else if (v_table_entry == 17u) {
+-        v_n_extra_bits = 3u;
+-        v_rep_symbol = 0u;
+-        v_rep_count = 3u;
+-      } else if (v_table_entry == 18u) {
+-        v_n_extra_bits = 7u;
+-        v_rep_symbol = 0u;
+-        v_rep_count = 11u;
+-      } else {
+-        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-        goto exit;
+       }
+-      while (v_n_bits < v_n_extra_bits) {
++    }
++    if ((self->private_data.f_scratch < 1u) || (256u < self->private_data.f_scratch)) {
++      status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
++      goto exit;
++    }
++    self->private_impl.f_num_symbols = (self->private_data.f_scratch + 2u);
++    self->private_data.f_scratch = 0u;
++    v_i = 0u;
++    while (v_i < 3u) {
++      if (self->private_impl.f_n_bits <= 0u) {
+         {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint32_t t_3 = *iop_a_src++;
+-          v_b3 = t_3;
++          uint8_t t_5 = *iop_a_src++;
++          v_c8 = t_5;
+         }
+-        v_bits |= (v_b3 << v_n_bits);
+-        v_n_bits += 8u;
++        self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
++        self->private_impl.f_n_bits = 8u;
+       }
+-      v_rep_count += ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_n_extra_bits));
+-      v_bits >>= v_n_extra_bits;
+-      v_n_bits -= v_n_extra_bits;
+-      while (v_rep_count > 0u) {
+-        if (v_i >= (v_n_lit + v_n_dist)) {
+-          status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_length_count);
+-          goto exit;
++      self->private_data.f_scratch <<= 1u;
++      self->private_data.f_scratch |= (self->private_impl.f_bits >> 31u);
++      self->private_impl.f_bits <<= 1u;
++      self->private_impl.f_n_bits -= 1u;
++      v_i += 1u;
++    }
++    if ((self->private_data.f_scratch < 2u) || (6u < self->private_data.f_scratch)) {
++      status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
++      goto exit;
++    }
++    self->private_impl.f_num_huffman_codes = self->private_data.f_scratch;
++    self->private_data.f_scratch = 0u;
++    v_i = 0u;
++    while (v_i < 15u) {
++      if (self->private_impl.f_n_bits <= 0u) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_6 = *iop_a_src++;
++          v_c8 = t_6;
+         }
+-        self->private_data.f_code_lengths[v_i] = v_rep_symbol;
+-        v_i += 1u;
+-        v_rep_count -= 1u;
++        self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
++        self->private_impl.f_n_bits = 8u;
+       }
++      self->private_data.f_scratch <<= 1u;
++      self->private_data.f_scratch |= (self->private_impl.f_bits >> 31u);
++      self->private_impl.f_bits <<= 1u;
++      self->private_impl.f_n_bits -= 1u;
++      v_i += 1u;
+     }
+-    if (v_i != (v_n_lit + v_n_dist)) {
+-      status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_length_count);
++    if ((self->private_data.f_scratch < 1u) || (18001u < self->private_data.f_scratch)) {
++      status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
+       goto exit;
+     }
+-    if (self->private_data.f_code_lengths[256u] == 0u) {
+-      status = wuffs_base__make_status(wuffs_deflate__error__missing_end_of_block_code);
+-      goto exit;
++    self->private_impl.f_num_sections = self->private_data.f_scratch;
++    v_i = 0u;
++    while (v_i < self->private_impl.f_num_huffman_codes) {
++      self->private_data.f_mtft[v_i] = ((uint8_t)(v_i));
++      v_i += 1u;
+     }
+-    v_status = wuffs_deflate__decoder__init_huff(self,
+-        0u,
+-        0u,
+-        v_n_lit,
+-        257u);
+-    if (wuffs_base__status__is_error(&v_status)) {
+-      status = v_status;
+-      goto exit;
++    v_i = 0u;
++    while (v_i < self->private_impl.f_num_sections) {
++      v_selector = 0u;
++      while (true) {
++        if (self->private_impl.f_n_bits <= 0u) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint8_t t_7 = *iop_a_src++;
++            v_c8 = t_7;
++          }
++          self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
++          self->private_impl.f_n_bits = 8u;
++        }
++        if ((self->private_impl.f_bits >> 31u) == 0u) {
++          self->private_impl.f_bits <<= 1u;
++          self->private_impl.f_n_bits -= 1u;
++          break;
++        }
++        self->private_impl.f_bits <<= 1u;
++        self->private_impl.f_n_bits -= 1u;
++        v_selector += 1u;
++        if (v_selector >= self->private_impl.f_num_huffman_codes) {
++          status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
++          goto exit;
++        }
++      }
++      if (v_selector == 0u) {
++        self->private_data.f_huffman_selectors[v_i] = self->private_data.f_mtft[0u];
++      } else {
++        v_sel_ff = (v_selector & 255u);
++        v_movee = self->private_data.f_mtft[v_sel_ff];
++        wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_mtft, 1, (1u + v_sel_ff)), wuffs_base__make_slice_u8(self->private_data.f_mtft, v_sel_ff));
++        self->private_data.f_mtft[0u] = v_movee;
++        self->private_data.f_huffman_selectors[v_i] = v_movee;
++      }
++      v_i += 1u;
+     }
+-    v_status = wuffs_deflate__decoder__init_huff(self,
+-        1u,
+-        v_n_lit,
+-        (v_n_lit + v_n_dist),
+-        0u);
+-    if (wuffs_base__status__is_error(&v_status)) {
+-      status = v_status;
+-      goto exit;
++    v_i = 0u;
++    while (v_i < self->private_impl.f_num_huffman_codes) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++      status = wuffs_bzip2__decoder__read_code_lengths(self, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++      v_status = wuffs_bzip2__decoder__build_huffman_tree(self, v_i);
++      if (wuffs_base__status__is_error(&v_status)) {
++        status = v_status;
++        goto exit;
++      }
++      wuffs_bzip2__decoder__build_huffman_table(self, v_i);
++      v_i += 1u;
++    }
++    v_i = 0u;
++    v_j = 0u;
++    while (v_i < 256u) {
++      if (self->private_data.f_presence[v_i] != 0u) {
++        self->private_data.f_mtft[(v_j & 255u)] = ((uint8_t)(v_i));
++        v_j += 1u;
++      }
++      v_i += 1u;
++    }
++    v_i = 0u;
++    while (v_i < 256u) {
++      self->private_data.f_letter_counts[v_i] = 0u;
++      v_i += 1u;
+     }
+-    self->private_impl.f_bits = v_bits;
+-    self->private_impl.f_n_bits = v_n_bits;
+ 
+     goto ok;
+     ok:
+-    self->private_impl.p_init_dynamic_huffman[0] = 0;
++    self->private_impl.p_prepare_block = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_init_dynamic_huffman[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_init_dynamic_huffman[0].v_bits = v_bits;
+-  self->private_data.s_init_dynamic_huffman[0].v_n_bits = v_n_bits;
+-  self->private_data.s_init_dynamic_huffman[0].v_n_lit = v_n_lit;
+-  self->private_data.s_init_dynamic_huffman[0].v_n_dist = v_n_dist;
+-  self->private_data.s_init_dynamic_huffman[0].v_n_clen = v_n_clen;
+-  self->private_data.s_init_dynamic_huffman[0].v_i = v_i;
+-  self->private_data.s_init_dynamic_huffman[0].v_mask = v_mask;
+-  self->private_data.s_init_dynamic_huffman[0].v_n_extra_bits = v_n_extra_bits;
+-  self->private_data.s_init_dynamic_huffman[0].v_rep_symbol = v_rep_symbol;
+-  self->private_data.s_init_dynamic_huffman[0].v_rep_count = v_rep_count;
++  self->private_impl.p_prepare_block = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_prepare_block.v_i = v_i;
++  self->private_data.s_prepare_block.v_selector = v_selector;
+ 
+   goto exit;
+   exit:
+@@ -35142,285 +34949,295 @@ wuffs_deflate__decoder__init_dynamic_huffman(
+   return status;
+ }
+ 
+-// -------- func deflate.decoder.init_huff
++// -------- func bzip2.decoder.read_code_lengths
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_deflate__decoder__init_huff(
+-    wuffs_deflate__decoder* self,
+-    uint32_t a_which,
+-    uint32_t a_n_codes0,
+-    uint32_t a_n_codes1,
+-    uint32_t a_base_symbol) {
+-  uint16_t v_counts[16] = {0};
++wuffs_bzip2__decoder__read_code_lengths(
++    wuffs_bzip2__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_c8 = 0;
+   uint32_t v_i = 0;
+-  uint32_t v_remaining = 0;
+-  uint16_t v_offsets[16] = {0};
+-  uint32_t v_n_symbols = 0;
+-  uint32_t v_count = 0;
+-  uint16_t v_symbols[320] = {0};
+-  uint32_t v_min_cl = 0;
+-  uint32_t v_max_cl = 0;
+-  uint32_t v_initial_high_bits = 0;
+-  uint32_t v_prev_cl = 0;
+-  uint32_t v_prev_redirect_key = 0;
+-  uint32_t v_top = 0;
+-  uint32_t v_next_top = 0;
+-  uint32_t v_code = 0;
+-  uint32_t v_key = 0;
+-  uint32_t v_value = 0;
+-  uint32_t v_cl = 0;
+-  uint32_t v_redirect_key = 0;
+-  uint32_t v_j = 0;
+-  uint32_t v_reversed_key = 0;
+-  uint32_t v_symbol = 0;
+-  uint32_t v_high_bits = 0;
+-  uint32_t v_delta = 0;
++  uint32_t v_code_length = 0;
+ 
+-  v_i = a_n_codes0;
+-  while (v_i < a_n_codes1) {
+-    if (v_counts[(self->private_data.f_code_lengths[v_i] & 15u)] >= 320u) {
+-      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-    }
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wconversion"
+-#endif
+-    v_counts[(self->private_data.f_code_lengths[v_i] & 15u)] += 1u;
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-    v_i += 1u;
+-  }
+-  if ((((uint32_t)(v_counts[0u])) + a_n_codes0) == a_n_codes1) {
+-    return wuffs_base__make_status(wuffs_deflate__error__no_huffman_codes);
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+-  v_remaining = 1u;
+-  v_i = 1u;
+-  while (v_i <= 15u) {
+-    if (v_remaining > 1073741824u) {
+-      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-    }
+-    v_remaining <<= 1u;
+-    if (v_remaining < ((uint32_t)(v_counts[v_i]))) {
+-      return wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_over_subscribed);
+-    }
+-    v_remaining -= ((uint32_t)(v_counts[v_i]));
+-    v_i += 1u;
++
++  uint32_t coro_susp_point = self->private_impl.p_read_code_lengths;
++  if (coro_susp_point) {
++    v_i = self->private_data.s_read_code_lengths.v_i;
++    v_code_length = self->private_data.s_read_code_lengths.v_code_length;
+   }
+-  if (v_remaining != 0u) {
+-    if ((a_which == 1u) && (v_counts[1u] == 1u) && ((((uint32_t)(v_counts[0u])) + a_n_codes0 + 1u) == a_n_codes1)) {
+-      v_i = 0u;
+-      while (v_i <= 29u) {
+-        if (self->private_data.f_code_lengths[(a_n_codes0 + v_i)] == 1u) {
+-          self->private_impl.f_n_huffs_bits[1u] = 1u;
+-          self->private_data.f_huffs[1u][0u] = (WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[v_i] | 1u);
+-          self->private_data.f_huffs[1u][1u] = (WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[31u] | 1u);
+-          return wuffs_base__make_status(NULL);
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    self->private_impl.f_code_lengths_bitmask = 0u;
++    v_i = 0u;
++    while (v_i < 5u) {
++      if (self->private_impl.f_n_bits <= 0u) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_0 = *iop_a_src++;
++          v_c8 = t_0;
+         }
+-        v_i += 1u;
++        self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
++        self->private_impl.f_n_bits = 8u;
+       }
++      v_code_length <<= 1u;
++      v_code_length |= (self->private_impl.f_bits >> 31u);
++      self->private_impl.f_bits <<= 1u;
++      self->private_impl.f_n_bits -= 1u;
++      v_i += 1u;
+     }
+-    return wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_under_subscribed);
+-  }
+-  v_i = 1u;
+-  while (v_i <= 15u) {
+-    v_offsets[v_i] = ((uint16_t)(v_n_symbols));
+-    v_count = ((uint32_t)(v_counts[v_i]));
+-    if (v_n_symbols > (320u - v_count)) {
+-      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-    }
+-    v_n_symbols = (v_n_symbols + v_count);
+-    v_i += 1u;
+-  }
+-  if (v_n_symbols > 288u) {
+-    return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-  }
+-  v_i = a_n_codes0;
+-  while (v_i < a_n_codes1) {
+-    if (v_i < a_n_codes0) {
+-      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-    }
+-    if (self->private_data.f_code_lengths[v_i] != 0u) {
+-      if (v_offsets[(self->private_data.f_code_lengths[v_i] & 15u)] >= 320u) {
+-        return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++    v_i = 0u;
++    while (v_i < self->private_impl.f_num_symbols) {
++      while (true) {
++        if ((v_code_length < 1u) || (20u < v_code_length)) {
++          status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
++          goto exit;
++        }
++        if (self->private_impl.f_n_bits <= 0u) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint8_t t_1 = *iop_a_src++;
++            v_c8 = t_1;
++          }
++          self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
++          self->private_impl.f_n_bits = 8u;
++        }
++        if ((self->private_impl.f_bits >> 31u) == 0u) {
++          self->private_impl.f_bits <<= 1u;
++          self->private_impl.f_n_bits -= 1u;
++          break;
++        }
++        self->private_impl.f_bits <<= 1u;
++        self->private_impl.f_n_bits -= 1u;
++        if (self->private_impl.f_n_bits <= 0u) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint8_t t_2 = *iop_a_src++;
++            v_c8 = t_2;
++          }
++          self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
++          self->private_impl.f_n_bits = 8u;
++        }
++        if ((self->private_impl.f_bits >> 31u) == 0u) {
++          v_code_length += 1u;
++        } else {
++          v_code_length -= 1u;
++        }
++        self->private_impl.f_bits <<= 1u;
++        self->private_impl.f_n_bits -= 1u;
+       }
+-      v_symbols[v_offsets[(self->private_data.f_code_lengths[v_i] & 15u)]] = ((uint16_t)((v_i - a_n_codes0)));
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wconversion"
+-#endif
+-      v_offsets[(self->private_data.f_code_lengths[v_i] & 15u)] += 1u;
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-    }
+-    v_i += 1u;
+-  }
+-  v_min_cl = 1u;
+-  while (true) {
+-    if (v_counts[v_min_cl] != 0u) {
+-      break;
+-    }
+-    if (v_min_cl >= 9u) {
+-      return wuffs_base__make_status(wuffs_deflate__error__bad_huffman_minimum_code_length);
+-    }
+-    v_min_cl += 1u;
+-  }
+-  v_max_cl = 15u;
+-  while (true) {
+-    if (v_counts[v_max_cl] != 0u) {
+-      break;
+-    }
+-    if (v_max_cl <= 1u) {
+-      return wuffs_base__make_status(wuffs_deflate__error__no_huffman_codes);
++      self->private_impl.f_code_lengths_bitmask |= (((uint32_t)(1u)) << (v_code_length & 31u));
++      self->private_data.f_bwt[v_i] = v_code_length;
++      v_i += 1u;
+     }
+-    v_max_cl -= 1u;
+-  }
+-  if (v_max_cl <= 9u) {
+-    self->private_impl.f_n_huffs_bits[a_which] = v_max_cl;
+-  } else {
+-    self->private_impl.f_n_huffs_bits[a_which] = 9u;
+-  }
+-  v_i = 0u;
+-  if ((v_n_symbols != ((uint32_t)(v_offsets[v_max_cl]))) || (v_n_symbols != ((uint32_t)(v_offsets[15u])))) {
+-    return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-  }
+-  if ((a_n_codes0 + ((uint32_t)(v_symbols[0u]))) >= 320u) {
+-    return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++
++    goto ok;
++    ok:
++    self->private_impl.p_read_code_lengths = 0;
++    goto exit;
+   }
+-  v_initial_high_bits = 512u;
+-  if (v_max_cl < 9u) {
+-    v_initial_high_bits = (((uint32_t)(1u)) << v_max_cl);
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_read_code_lengths = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_read_code_lengths.v_i = v_i;
++  self->private_data.s_read_code_lengths.v_code_length = v_code_length;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+-  v_prev_cl = ((uint32_t)((self->private_data.f_code_lengths[(a_n_codes0 + ((uint32_t)(v_symbols[0u])))] & 15u)));
+-  v_prev_redirect_key = 4294967295u;
+-  v_top = 0u;
+-  v_next_top = 512u;
+-  v_code = 0u;
+-  v_key = 0u;
+-  v_value = 0u;
+-  while (true) {
+-    if ((a_n_codes0 + ((uint32_t)(v_symbols[v_i]))) >= 320u) {
+-      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++
++  return status;
++}
++
++// -------- func bzip2.decoder.build_huffman_tree
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_bzip2__decoder__build_huffman_tree(
++    wuffs_bzip2__decoder* self,
++    uint32_t a_which) {
++  uint32_t v_code_length = 0;
++  uint32_t v_symbol_index = 0;
++  uint32_t v_num_branch_nodes = 0;
++  uint32_t v_stack_height = 0;
++  uint32_t v_stack_values[21] = {0};
++  uint32_t v_node_index = 0;
++  uint16_t v_leaf_value = 0;
++
++  self->private_data.f_huffman_trees[a_which][0u][0u] = 0u;
++  self->private_data.f_huffman_trees[a_which][0u][1u] = 0u;
++  v_num_branch_nodes = 1u;
++  v_stack_height = 1u;
++  v_stack_values[0u] = 0u;
++  v_code_length = 1u;
++  while (v_code_length <= 20u) {
++    if ((self->private_impl.f_code_lengths_bitmask & (((uint32_t)(1u)) << v_code_length)) == 0u) {
++      v_code_length += 1u;
++      continue;
+     }
+-    v_cl = ((uint32_t)((self->private_data.f_code_lengths[(a_n_codes0 + ((uint32_t)(v_symbols[v_i])))] & 15u)));
+-    if (v_cl > v_prev_cl) {
+-      v_code <<= (v_cl - v_prev_cl);
+-      if (v_code >= 32768u) {
+-        return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++    v_symbol_index = 0u;
++    while (v_symbol_index < self->private_impl.f_num_symbols) {
++      if (self->private_data.f_bwt[v_symbol_index] != v_code_length) {
++        v_symbol_index += 1u;
++        continue;
+       }
+-    }
+-    v_prev_cl = v_cl;
+-    v_key = v_code;
+-    if (v_cl > 9u) {
+-      v_cl -= 9u;
+-      v_redirect_key = ((v_key >> v_cl) & 511u);
+-      v_key = ((v_key) & WUFFS_BASE__LOW_BITS_MASK__U32(v_cl));
+-      if (v_prev_redirect_key != v_redirect_key) {
+-        v_prev_redirect_key = v_redirect_key;
+-        v_remaining = (((uint32_t)(1u)) << v_cl);
+-        v_j = v_prev_cl;
+-        while (v_j <= 15u) {
+-          if (v_remaining <= ((uint32_t)(v_counts[v_j]))) {
+-            break;
+-          }
+-          v_remaining -= ((uint32_t)(v_counts[v_j]));
+-          if (v_remaining > 1073741824u) {
+-            return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-          }
+-          v_remaining <<= 1u;
+-          v_j += 1u;
++      while (true) {
++        if (v_stack_height <= 0u) {
++          return wuffs_base__make_status(wuffs_bzip2__error__bad_huffman_code_over_subscribed);
++        } else if (v_stack_height >= v_code_length) {
++          break;
+         }
+-        if ((v_j <= 9u) || (15u < v_j)) {
+-          return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++        v_node_index = v_stack_values[(v_stack_height - 1u)];
++        if (self->private_data.f_huffman_trees[a_which][v_node_index][0u] == 0u) {
++          self->private_data.f_huffman_trees[a_which][v_node_index][0u] = ((uint16_t)(v_num_branch_nodes));
++        } else {
++          self->private_data.f_huffman_trees[a_which][v_node_index][1u] = ((uint16_t)(v_num_branch_nodes));
+         }
+-        v_j -= 9u;
+-        v_initial_high_bits = (((uint32_t)(1u)) << v_j);
+-        v_top = v_next_top;
+-        if ((v_top + (((uint32_t)(1u)) << v_j)) > 1024u) {
+-          return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++        if (v_num_branch_nodes >= 257u) {
++          return wuffs_base__make_status(wuffs_bzip2__error__bad_huffman_code_under_subscribed);
+         }
+-        v_next_top = (v_top + (((uint32_t)(1u)) << v_j));
+-        v_redirect_key = (((uint32_t)(WUFFS_DEFLATE__REVERSE8[(v_redirect_key >> 1u)])) | ((v_redirect_key & 1u) << 8u));
+-        self->private_data.f_huffs[a_which][v_redirect_key] = (268435465u | (v_top << 8u) | (v_j << 4u));
++        v_stack_values[v_stack_height] = v_num_branch_nodes;
++        self->private_data.f_huffman_trees[a_which][v_num_branch_nodes][0u] = 0u;
++        self->private_data.f_huffman_trees[a_which][v_num_branch_nodes][1u] = 0u;
++        v_num_branch_nodes += 1u;
++        v_stack_height += 1u;
+       }
++      v_node_index = v_stack_values[(v_stack_height - 1u)];
++      if (v_symbol_index < 2u) {
++        v_leaf_value = ((uint16_t)((769u + v_symbol_index)));
++      } else if ((v_symbol_index + 1u) < self->private_impl.f_num_symbols) {
++        v_leaf_value = ((uint16_t)((511u + v_symbol_index)));
++      } else {
++        v_leaf_value = 768u;
++      }
++      if (self->private_data.f_huffman_trees[a_which][v_node_index][0u] == 0u) {
++        self->private_data.f_huffman_trees[a_which][v_node_index][0u] = v_leaf_value;
++      } else {
++        self->private_data.f_huffman_trees[a_which][v_node_index][1u] = v_leaf_value;
++        v_stack_height -= 1u;
++        while (v_stack_height > 0u) {
++          v_node_index = v_stack_values[(v_stack_height - 1u)];
++          if (self->private_data.f_huffman_trees[a_which][v_node_index][1u] == 0u) {
++            break;
++          }
++          v_stack_height -= 1u;
++        }
++      }
++      v_symbol_index += 1u;
+     }
+-    if ((v_key >= 512u) || (v_counts[v_prev_cl] <= 0u)) {
+-      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-    }
++    v_code_length += 1u;
++  }
++  if (v_stack_height != 0u) {
++    return wuffs_base__make_status(wuffs_bzip2__error__bad_huffman_code_under_subscribed);
++  }
++  return wuffs_base__make_status(NULL);
++}
++
++// -------- func bzip2.decoder.build_huffman_table
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_bzip2__decoder__build_huffman_table(
++    wuffs_bzip2__decoder* self,
++    uint32_t a_which) {
++  uint32_t v_i = 0;
++  uint32_t v_bits = 0;
++  uint16_t v_n_bits = 0;
++  uint16_t v_child = 0;
++
++  while (v_i < 256u) {
++    v_bits = (v_i << 24u);
++    v_n_bits = 0u;
++    v_child = 0u;
++    while ((v_child < 257u) && (v_n_bits < 8u)) {
++      v_child = self->private_data.f_huffman_trees[a_which][v_child][(v_bits >> 31u)];
++      v_bits <<= 1u;
+ #if defined(__GNUC__)
+ #pragma GCC diagnostic push
+ #pragma GCC diagnostic ignored "-Wconversion"
+ #endif
+-    v_counts[v_prev_cl] -= 1u;
++      v_n_bits += 1u;
+ #if defined(__GNUC__)
+ #pragma GCC diagnostic pop
+ #endif
+-    v_reversed_key = (((uint32_t)(WUFFS_DEFLATE__REVERSE8[(v_key >> 1u)])) | ((v_key & 1u) << 8u));
+-    v_reversed_key >>= (9u - v_cl);
+-    v_symbol = ((uint32_t)(v_symbols[v_i]));
+-    if (v_symbol == 256u) {
+-      v_value = (536870912u | v_cl);
+-    } else if ((v_symbol < 256u) && (a_which == 0u)) {
+-      v_value = (2147483648u | (v_symbol << 8u) | v_cl);
+-    } else if (v_symbol >= a_base_symbol) {
+-      v_symbol -= a_base_symbol;
+-      if (a_which == 0u) {
+-        v_value = (WUFFS_DEFLATE__LCODE_MAGIC_NUMBERS[(v_symbol & 31u)] | v_cl);
+-      } else {
+-        v_value = (WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[(v_symbol & 31u)] | v_cl);
+-      }
+-    } else {
+-      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-    }
+-    v_high_bits = v_initial_high_bits;
+-    v_delta = (((uint32_t)(1u)) << v_cl);
+-    while (v_high_bits >= v_delta) {
+-      v_high_bits -= v_delta;
+-      if ((v_top + ((v_high_bits | v_reversed_key) & 511u)) >= 1024u) {
+-        return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-      }
+-      self->private_data.f_huffs[a_which][(v_top + ((v_high_bits | v_reversed_key) & 511u))] = v_value;
+     }
++    self->private_data.f_huffman_tables[a_which][v_i] = ((uint16_t)(((uint16_t)(v_child | ((uint16_t)(v_n_bits << 12u))))));
+     v_i += 1u;
+-    if (v_i >= v_n_symbols) {
+-      break;
+-    }
+-    v_code += 1u;
+-    if (v_code >= 32768u) {
+-      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-    }
+   }
+-  return wuffs_base__make_status(NULL);
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-// ‼ WUFFS MULTI-FILE SECTION +x86_bmi2
+-// -------- func deflate.decoder.decode_huffman_bmi2
++// -------- func bzip2.decoder.invert_bwt
+ 
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("bmi2")
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_deflate__decoder__decode_huffman_bmi2(
+-    wuffs_deflate__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++static wuffs_base__empty_struct
++wuffs_bzip2__decoder__invert_bwt(
++    wuffs_bzip2__decoder* self) {
++  uint32_t v_i = 0;
++  uint32_t v_letter = 0;
++  uint32_t v_sum = 0;
++  uint32_t v_old_sum = 0;
+ 
+-  uint64_t v_bits = 0;
+-  uint32_t v_n_bits = 0;
+-  uint32_t v_table_entry = 0;
+-  uint32_t v_table_entry_n_bits = 0;
+-  uint64_t v_lmask = 0;
+-  uint64_t v_dmask = 0;
+-  uint32_t v_redir_top = 0;
+-  uint32_t v_redir_mask = 0;
+-  uint32_t v_length = 0;
+-  uint32_t v_dist_minus_1 = 0;
+-  uint32_t v_hlen = 0;
+-  uint32_t v_hdist = 0;
+-  uint32_t v_hdist_adjustment = 0;
++  v_sum = 0u;
++  v_i = 0u;
++  while (v_i < 256u) {
++    v_old_sum = v_sum;
++    v_sum += self->private_data.f_letter_counts[v_i];
++    self->private_data.f_letter_counts[v_i] = v_old_sum;
++    v_i += 1u;
++  }
++  v_i = 0u;
++  while (v_i < self->private_impl.f_block_size) {
++    v_letter = (self->private_data.f_bwt[v_i] & 255u);
++    self->private_data.f_bwt[(self->private_data.f_letter_counts[v_letter] & 1048575u)] |= (v_i << 12u);
++    self->private_data.f_letter_counts[v_letter] += 1u;
++    v_i += 1u;
++  }
++  return wuffs_base__make_empty_struct();
++}
++
++// -------- func bzip2.decoder.flush_fast
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_bzip2__decoder__flush_fast(
++    wuffs_bzip2__decoder* self,
++    wuffs_base__io_buffer* a_dst) {
++  uint32_t v_flush_pointer = 0;
++  uint32_t v_flush_repeat_count = 0;
++  uint8_t v_flush_prev = 0;
++  uint32_t v_block_checksum_have = 0;
++  uint32_t v_block_size = 0;
++  uint32_t v_entry = 0;
++  uint8_t v_curr = 0;
+ 
+   uint8_t* iop_a_dst = NULL;
+   uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -35435,217 +35252,204 @@ wuffs_deflate__decoder__decode_huffman_bmi2(
+       io2_a_dst = iop_a_dst;
+     }
+   }
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
+ 
+-  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
+-    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
+-    goto exit;
+-  }
+-  v_bits = ((uint64_t)(self->private_impl.f_bits));
+-  v_n_bits = self->private_impl.f_n_bits;
+-  v_lmask = ((((uint64_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u);
+-  v_dmask = ((((uint64_t)(1u)) << self->private_impl.f_n_huffs_bits[1u]) - 1u);
+-  if (self->private_impl.f_transformed_history_count < (a_dst ? a_dst->meta.pos : 0u)) {
+-    status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position);
+-    goto exit;
++  v_flush_pointer = self->private_impl.f_flush_pointer;
++  v_flush_repeat_count = self->private_impl.f_flush_repeat_count;
++  v_flush_prev = self->private_impl.f_flush_prev;
++  v_block_checksum_have = self->private_impl.f_block_checksum_have;
++  v_block_size = self->private_impl.f_block_size;
++  while ((v_block_size > 0u) && (((uint64_t)(io2_a_dst - iop_a_dst)) >= 255u)) {
++    if (v_flush_repeat_count < 4u) {
++      v_entry = self->private_data.f_bwt[v_flush_pointer];
++      v_curr = ((uint8_t)(v_entry));
++      v_flush_pointer = (v_entry >> 12u);
++      if (v_curr == v_flush_prev) {
++        v_flush_repeat_count += 1u;
++      } else {
++        v_flush_repeat_count = 1u;
++      }
++      v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[((uint8_t)(((uint8_t)((v_block_checksum_have >> 24u))) ^ v_curr))] ^ ((uint32_t)(v_block_checksum_have << 8u)));
++      (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_curr), iop_a_dst += 1);
++      v_flush_prev = v_curr;
++      v_block_size -= 1u;
++    } else {
++      v_entry = self->private_data.f_bwt[v_flush_pointer];
++      v_curr = ((uint8_t)(v_entry));
++      v_flush_pointer = (v_entry >> 12u);
++      v_flush_repeat_count = ((uint32_t)(v_curr));
++      while (v_flush_repeat_count > 0u) {
++        v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[((uint8_t)(((uint8_t)((v_block_checksum_have >> 24u))) ^ v_flush_prev))] ^ ((uint32_t)(v_block_checksum_have << 8u)));
++        if (((uint64_t)(io2_a_dst - iop_a_dst)) > 0u) {
++          (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_flush_prev), iop_a_dst += 1);
++        }
++        v_flush_repeat_count -= 1u;
++      }
++      v_flush_repeat_count = 0u;
++      v_flush_prev = v_curr;
++      v_block_size -= 1u;
++    }
+   }
+-  v_hdist_adjustment = ((uint32_t)((self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0u))));
+-  label__loop__continue:;
+-  while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 266u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 8u)) {
+-    v_bits |= ((uint64_t)(wuffs_base__peek_u64le__no_bounds_check(iop_a_src) << (v_n_bits & 63u)));
+-    iop_a_src += ((63u - (v_n_bits & 63u)) >> 3u);
+-    v_n_bits |= 56u;
+-    v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_lmask)];
+-    v_table_entry_n_bits = (v_table_entry & 15u);
+-    v_bits >>= v_table_entry_n_bits;
+-    v_n_bits -= v_table_entry_n_bits;
+-    if ((v_table_entry >> 31u) != 0u) {
+-      (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
+-      continue;
+-    } else if ((v_table_entry >> 30u) != 0u) {
+-    } else if ((v_table_entry >> 29u) != 0u) {
+-      self->private_impl.f_end_of_block = true;
+-      break;
+-    } else if ((v_table_entry >> 28u) != 0u) {
+-      v_redir_top = ((v_table_entry >> 8u) & 65535u);
+-      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
+-      v_table_entry = self->private_data.f_huffs[0u][((v_redir_top + (((uint32_t)(v_bits)) & v_redir_mask)) & 1023u)];
+-      v_table_entry_n_bits = (v_table_entry & 15u);
+-      v_bits >>= v_table_entry_n_bits;
+-      v_n_bits -= v_table_entry_n_bits;
+-      if ((v_table_entry >> 31u) != 0u) {
+-        (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
+-        continue;
+-      } else if ((v_table_entry >> 30u) != 0u) {
+-      } else if ((v_table_entry >> 29u) != 0u) {
+-        self->private_impl.f_end_of_block = true;
+-        break;
+-      } else if ((v_table_entry >> 28u) != 0u) {
+-        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-        goto exit;
+-      } else if ((v_table_entry >> 27u) != 0u) {
+-        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
+-        goto exit;
+-      } else {
+-        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-        goto exit;
+-      }
+-    } else if ((v_table_entry >> 27u) != 0u) {
+-      status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
+-      goto exit;
+-    } else {
+-      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-      goto exit;
+-    }
+-    v_length = (((v_table_entry >> 8u) & 255u) + 3u);
+-    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
+-    if (v_table_entry_n_bits > 0u) {
+-      v_length = (((v_length + 253u + ((uint32_t)(((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 255u) + 3u);
+-      v_bits >>= v_table_entry_n_bits;
+-      v_n_bits -= v_table_entry_n_bits;
+-    }
+-    v_table_entry = self->private_data.f_huffs[1u][(v_bits & v_dmask)];
+-    v_table_entry_n_bits = (v_table_entry & 15u);
+-    v_bits >>= v_table_entry_n_bits;
+-    v_n_bits -= v_table_entry_n_bits;
+-    if ((v_table_entry >> 28u) == 1u) {
+-      v_redir_top = ((v_table_entry >> 8u) & 65535u);
+-      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
+-      v_table_entry = self->private_data.f_huffs[1u][((v_redir_top + (((uint32_t)(v_bits)) & v_redir_mask)) & 1023u)];
+-      v_table_entry_n_bits = (v_table_entry & 15u);
+-      v_bits >>= v_table_entry_n_bits;
+-      v_n_bits -= v_table_entry_n_bits;
+-    }
+-    if ((v_table_entry >> 24u) != 64u) {
+-      if ((v_table_entry >> 24u) == 8u) {
+-        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
+-        goto exit;
+-      }
+-      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-      goto exit;
++  self->private_impl.f_flush_pointer = v_flush_pointer;
++  self->private_impl.f_flush_repeat_count = v_flush_repeat_count;
++  self->private_impl.f_flush_prev = v_flush_prev;
++  self->private_impl.f_block_checksum_have = v_block_checksum_have;
++  if (v_block_size <= 900000u) {
++    self->private_impl.f_block_size = v_block_size;
++  }
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++  }
++
++  return wuffs_base__make_empty_struct();
++}
++
++// -------- func bzip2.decoder.flush_slow
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_bzip2__decoder__flush_slow(
++    wuffs_bzip2__decoder* self,
++    wuffs_base__io_buffer* a_dst) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint32_t v_flush_pointer = 0;
++  uint32_t v_flush_repeat_count = 0;
++  uint8_t v_flush_prev = 0;
++  uint32_t v_block_checksum_have = 0;
++  uint32_t v_block_size = 0;
++  uint32_t v_entry = 0;
++  uint8_t v_curr = 0;
++
++  uint8_t* iop_a_dst = NULL;
++  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
+     }
+-    v_dist_minus_1 = ((v_table_entry >> 8u) & 32767u);
+-    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
+-    v_dist_minus_1 = ((v_dist_minus_1 + ((uint32_t)(((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 32767u);
+-    v_bits >>= v_table_entry_n_bits;
+-    v_n_bits -= v_table_entry_n_bits;
+-    do {
+-      if (((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
+-        v_hlen = 0u;
+-        v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1u))) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
+-        if (v_length > v_hdist) {
+-          v_length -= v_hdist;
+-          v_hlen = v_hdist;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_flush_slow;
++  if (coro_susp_point) {
++    v_flush_pointer = self->private_data.s_flush_slow.v_flush_pointer;
++    v_flush_repeat_count = self->private_data.s_flush_slow.v_flush_repeat_count;
++    v_flush_prev = self->private_data.s_flush_slow.v_flush_prev;
++    v_block_checksum_have = self->private_data.s_flush_slow.v_block_checksum_have;
++    v_block_size = self->private_data.s_flush_slow.v_block_size;
++    v_curr = self->private_data.s_flush_slow.v_curr;
++  }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    v_flush_pointer = self->private_impl.f_flush_pointer;
++    v_flush_repeat_count = self->private_impl.f_flush_repeat_count;
++    v_flush_prev = self->private_impl.f_flush_prev;
++    v_block_checksum_have = self->private_impl.f_block_checksum_have;
++    v_block_size = self->private_impl.f_block_size;
++    while ((v_block_size > 0u) &&  ! (self->private_impl.p_flush_slow != 0)) {
++      if (v_flush_repeat_count < 4u) {
++        v_entry = self->private_data.f_bwt[v_flush_pointer];
++        v_curr = ((uint8_t)(v_entry));
++        v_flush_pointer = (v_entry >> 12u);
++        if (v_curr == v_flush_prev) {
++          v_flush_repeat_count += 1u;
+         } else {
+-          v_hlen = v_length;
+-          v_length = 0u;
+-        }
+-        v_hdist += v_hdist_adjustment;
+-        if (self->private_impl.f_history_index < v_hdist) {
+-          status = wuffs_base__make_status(wuffs_deflate__error__bad_distance);
+-          goto exit;
+-        }
+-        wuffs_base__io_writer__limited_copy_u32_from_slice(
+-            &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767u), 33025));
+-        if (v_length == 0u) {
+-          goto label__loop__continue;
++          v_flush_repeat_count = 1u;
+         }
+-        if ((((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) || (((uint64_t)(v_length)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_length + 8u))) > ((uint64_t)(io2_a_dst - iop_a_dst)))) {
+-          status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_distance);
+-          goto exit;
++        v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[((uint8_t)(((uint8_t)((v_block_checksum_have >> 24u))) ^ v_curr))] ^ ((uint32_t)(v_block_checksum_have << 8u)));
++        self->private_data.s_flush_slow.scratch = v_curr;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        if (iop_a_dst == io2_a_dst) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++          goto suspend;
+         }
+-      }
+-      if ((v_dist_minus_1 + 1u) >= 8u) {
+-        wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast(
+-            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
+-      } else if ((v_dist_minus_1 + 1u) == 1u) {
+-        wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast(
+-            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
++        *iop_a_dst++ = ((uint8_t)(self->private_data.s_flush_slow.scratch));
++        v_flush_prev = v_curr;
++        v_block_size -= 1u;
+       } else {
+-        wuffs_base__io_writer__limited_copy_u32_from_history_fast(
+-            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
++        v_entry = self->private_data.f_bwt[v_flush_pointer];
++        v_curr = ((uint8_t)(v_entry));
++        v_flush_pointer = (v_entry >> 12u);
++        v_flush_repeat_count = ((uint32_t)(v_curr));
++        while (v_flush_repeat_count > 0u) {
++          v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[((uint8_t)(((uint8_t)((v_block_checksum_have >> 24u))) ^ v_flush_prev))] ^ ((uint32_t)(v_block_checksum_have << 8u)));
++          self->private_data.s_flush_slow.scratch = v_flush_prev;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++          if (iop_a_dst == io2_a_dst) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++            goto suspend;
++          }
++          *iop_a_dst++ = ((uint8_t)(self->private_data.s_flush_slow.scratch));
++          v_flush_repeat_count -= 1u;
++        }
++        v_flush_repeat_count = 0u;
++        v_flush_prev = v_curr;
++        v_block_size -= 1u;
+       }
+-    } while (0);
+-  }
+-  if (v_n_bits > 63u) {
+-    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
+-    goto exit;
+-  }
+-  while (v_n_bits >= 8u) {
+-    v_n_bits -= 8u;
+-    if (iop_a_src > io1_a_src) {
+-      iop_a_src--;
+-    } else {
+-      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_i_o);
+-      goto exit;
+     }
+-  }
+-  self->private_impl.f_bits = ((uint32_t)((v_bits & ((((uint64_t)(1u)) << v_n_bits) - 1u))));
+-  self->private_impl.f_n_bits = v_n_bits;
+-  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> self->private_impl.f_n_bits) != 0u)) {
+-    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
++    self->private_impl.f_flush_pointer = v_flush_pointer;
++    self->private_impl.f_flush_repeat_count = v_flush_repeat_count;
++    self->private_impl.f_flush_prev = v_flush_prev;
++    self->private_impl.f_block_checksum_have = v_block_checksum_have;
++    if (v_block_size <= 900000u) {
++      self->private_impl.f_block_size = v_block_size;
++    }
++
++    goto ok;
++    ok:
++    self->private_impl.p_flush_slow = 0;
+     goto exit;
+   }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_flush_slow = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_flush_slow.v_flush_pointer = v_flush_pointer;
++  self->private_data.s_flush_slow.v_flush_repeat_count = v_flush_repeat_count;
++  self->private_data.s_flush_slow.v_flush_prev = v_flush_prev;
++  self->private_data.s_flush_slow.v_block_checksum_have = v_block_checksum_have;
++  self->private_data.s_flush_slow.v_block_size = v_block_size;
++  self->private_data.s_flush_slow.v_curr = v_curr;
++
+   goto exit;
+   exit:
+   if (a_dst && a_dst->data.ptr) {
+     a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+   }
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
+ 
+   return status;
+ }
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-// ‼ WUFFS MULTI-FILE SECTION -x86_bmi2
+ 
+-// -------- func deflate.decoder.decode_huffman_fast32
++// -------- func bzip2.decoder.decode_huffman_fast
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_deflate__decoder__decode_huffman_fast32(
+-    wuffs_deflate__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
++wuffs_bzip2__decoder__decode_huffman_fast(
++    wuffs_bzip2__decoder* self,
+     wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+   uint32_t v_bits = 0;
+   uint32_t v_n_bits = 0;
+-  uint32_t v_table_entry = 0;
+-  uint32_t v_table_entry_n_bits = 0;
+-  uint32_t v_lmask = 0;
+-  uint32_t v_dmask = 0;
+-  uint32_t v_redir_top = 0;
+-  uint32_t v_redir_mask = 0;
+-  uint32_t v_length = 0;
+-  uint32_t v_dist_minus_1 = 0;
+-  uint32_t v_hlen = 0;
+-  uint32_t v_hdist = 0;
+-  uint32_t v_hdist_adjustment = 0;
++  uint32_t v_block_size = 0;
++  uint8_t v_which = 0;
++  uint32_t v_ticks = 0;
++  uint32_t v_section = 0;
++  uint32_t v_run_shift = 0;
++  uint16_t v_table_entry = 0;
++  uint16_t v_child = 0;
++  uint32_t v_child_ff = 0;
++  uint32_t v_i = 0;
++  uint32_t v_j = 0;
++  uint32_t v_output = 0;
++  uint32_t v_run = 0;
++  uint32_t v_mtft0 = 0;
+ 
+-  uint8_t* iop_a_dst = NULL;
+-  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_dst && a_dst->data.ptr) {
+-    io0_a_dst = a_dst->data.ptr;
+-    io1_a_dst = io0_a_dst + a_dst->meta.wi;
+-    iop_a_dst = io1_a_dst;
+-    io2_a_dst = io0_a_dst + a_dst->data.len;
+-    if (a_dst->meta.closed) {
+-      io2_a_dst = iop_a_dst;
+-    }
+-  }
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -35657,205 +35461,92 @@ wuffs_deflate__decoder__decode_huffman_fast32(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
+-    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
+-    goto exit;
+-  }
+   v_bits = self->private_impl.f_bits;
+   v_n_bits = self->private_impl.f_n_bits;
+-  v_lmask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u);
+-  v_dmask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[1u]) - 1u);
+-  if (self->private_impl.f_transformed_history_count < (a_dst ? a_dst->meta.pos : 0u)) {
+-    status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position);
+-    goto exit;
+-  }
+-  v_hdist_adjustment = ((uint32_t)((self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0u))));
+-  label__loop__continue:;
+-  while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 266u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 12u)) {
+-    if (v_n_bits < 15u) {
+-      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
+-      iop_a_src += 1u;
+-      v_n_bits += 8u;
+-      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
+-      iop_a_src += 1u;
+-      v_n_bits += 8u;
++  v_block_size = self->private_impl.f_block_size;
++  v_which = self->private_impl.f_decode_huffman_which;
++  v_ticks = self->private_impl.f_decode_huffman_ticks;
++  v_section = self->private_impl.f_decode_huffman_section;
++  v_run_shift = self->private_impl.f_decode_huffman_run_shift;
++  while (((uint64_t)(io2_a_src - iop_a_src)) >= 4u) {
++    if (v_ticks > 0u) {
++      v_ticks -= 1u;
+     } else {
+-    }
+-    v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_lmask)];
+-    v_table_entry_n_bits = (v_table_entry & 15u);
+-    v_bits >>= v_table_entry_n_bits;
+-    v_n_bits -= v_table_entry_n_bits;
+-    if ((v_table_entry >> 31u) != 0u) {
+-      (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
+-      continue;
+-    } else if ((v_table_entry >> 30u) != 0u) {
+-    } else if ((v_table_entry >> 29u) != 0u) {
+-      self->private_impl.f_end_of_block = true;
+-      break;
+-    } else if ((v_table_entry >> 28u) != 0u) {
+-      if (v_n_bits < 15u) {
+-        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
+-        iop_a_src += 1u;
+-        v_n_bits += 8u;
+-        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
+-        iop_a_src += 1u;
+-        v_n_bits += 8u;
+-      } else {
+-      }
+-      v_redir_top = ((v_table_entry >> 8u) & 65535u);
+-      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
+-      v_table_entry = self->private_data.f_huffs[0u][((v_redir_top + (v_bits & v_redir_mask)) & 1023u)];
+-      v_table_entry_n_bits = (v_table_entry & 15u);
+-      v_bits >>= v_table_entry_n_bits;
+-      v_n_bits -= v_table_entry_n_bits;
+-      if ((v_table_entry >> 31u) != 0u) {
+-        (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
+-        continue;
+-      } else if ((v_table_entry >> 30u) != 0u) {
+-      } else if ((v_table_entry >> 29u) != 0u) {
+-        self->private_impl.f_end_of_block = true;
+-        break;
+-      } else if ((v_table_entry >> 28u) != 0u) {
+-        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-        goto exit;
+-      } else if ((v_table_entry >> 27u) != 0u) {
+-        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
+-        goto exit;
+-      } else {
+-        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++      v_ticks = 49u;
++      v_section += 1u;
++      if (v_section >= self->private_impl.f_num_sections) {
++        status = wuffs_base__make_status(wuffs_bzip2__error__bad_number_of_sections);
+         goto exit;
+       }
+-    } else if ((v_table_entry >> 27u) != 0u) {
+-      status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
+-      goto exit;
+-    } else {
+-      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-      goto exit;
+-    }
+-    v_length = (((v_table_entry >> 8u) & 255u) + 3u);
+-    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
+-    if (v_table_entry_n_bits > 0u) {
+-      if (v_n_bits < 15u) {
+-        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
+-        iop_a_src += 1u;
+-        v_n_bits += 8u;
+-        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
+-        iop_a_src += 1u;
+-        v_n_bits += 8u;
+-      } else {
+-      }
+-      v_length = (((v_length + 253u + ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 255u) + 3u);
+-      v_bits >>= v_table_entry_n_bits;
+-      v_n_bits -= v_table_entry_n_bits;
+-    } else {
+-    }
+-    if (v_n_bits < 15u) {
+-      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
+-      iop_a_src += 1u;
+-      v_n_bits += 8u;
+-      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
+-      iop_a_src += 1u;
+-      v_n_bits += 8u;
+-    } else {
++      v_which = WUFFS_BZIP2__CLAMP_TO_5[((uint8_t)(self->private_data.f_huffman_selectors[(v_section & 32767u)] & 7u))];
+     }
+-    v_table_entry = self->private_data.f_huffs[1u][(v_bits & v_dmask)];
+-    v_table_entry_n_bits = (v_table_entry & 15u);
+-    v_bits >>= v_table_entry_n_bits;
+-    v_n_bits -= v_table_entry_n_bits;
+-    if ((v_table_entry >> 28u) == 1u) {
+-      if (v_n_bits < 15u) {
+-        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
+-        iop_a_src += 1u;
+-        v_n_bits += 8u;
+-        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
+-        iop_a_src += 1u;
+-        v_n_bits += 8u;
+-      } else {
++    v_bits |= (wuffs_base__peek_u32be__no_bounds_check(iop_a_src) >> v_n_bits);
++    iop_a_src += ((31u - v_n_bits) >> 3u);
++    v_n_bits |= 24u;
++    v_table_entry = self->private_data.f_huffman_tables[v_which][(v_bits >> 24u)];
++    v_bits <<= ((uint16_t)(v_table_entry >> 12u));
++    v_n_bits -= ((uint32_t)(((uint16_t)(v_table_entry >> 12u))));
++    v_child = ((uint16_t)(v_table_entry & 1023u));
++    while (v_child < 257u) {
++      v_child = self->private_data.f_huffman_trees[v_which][v_child][(v_bits >> 31u)];
++      v_bits <<= 1u;
++      if (v_n_bits <= 0u) {
++        status = wuffs_base__make_status(wuffs_bzip2__error__internal_error_inconsistent_huffman_decoder_state);
++        goto exit;
+       }
+-      v_redir_top = ((v_table_entry >> 8u) & 65535u);
+-      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
+-      v_table_entry = self->private_data.f_huffs[1u][((v_redir_top + (v_bits & v_redir_mask)) & 1023u)];
+-      v_table_entry_n_bits = (v_table_entry & 15u);
+-      v_bits >>= v_table_entry_n_bits;
+-      v_n_bits -= v_table_entry_n_bits;
+-    } else {
++      v_n_bits -= 1u;
+     }
+-    if ((v_table_entry >> 24u) != 64u) {
+-      if ((v_table_entry >> 24u) == 8u) {
+-        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
++    if (v_child < 768u) {
++      v_child_ff = ((uint32_t)(((uint16_t)(v_child & 255u))));
++      v_output = ((uint32_t)(self->private_data.f_mtft[v_child_ff]));
++      wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_mtft, 1, (1u + v_child_ff)), wuffs_base__make_slice_u8(self->private_data.f_mtft, v_child_ff));
++      self->private_data.f_mtft[0u] = ((uint8_t)(v_output));
++      self->private_data.f_letter_counts[v_output] += 1u;
++      self->private_data.f_bwt[v_block_size] = v_output;
++      if (v_block_size >= self->private_impl.f_max_incl_block_size) {
++        status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
+         goto exit;
+       }
+-      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-      goto exit;
++      v_block_size += 1u;
++      v_run_shift = 0u;
++      continue;
++    } else if (v_child == 768u) {
++      self->private_impl.f_decode_huffman_finished = true;
++      break;
+     }
+-    v_dist_minus_1 = ((v_table_entry >> 8u) & 32767u);
+-    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
+-    if (v_n_bits < v_table_entry_n_bits) {
+-      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
+-      iop_a_src += 1u;
+-      v_n_bits += 8u;
+-      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
+-      iop_a_src += 1u;
+-      v_n_bits += 8u;
++    if (v_run_shift >= 23u) {
++      status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
++      goto exit;
+     }
+-    v_dist_minus_1 = ((v_dist_minus_1 + ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 32767u);
+-    v_bits >>= v_table_entry_n_bits;
+-    v_n_bits -= v_table_entry_n_bits;
+-    do {
+-      if (((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
+-        v_hlen = 0u;
+-        v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1u))) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
+-        if (v_length > v_hdist) {
+-          v_length -= v_hdist;
+-          v_hlen = v_hdist;
+-        } else {
+-          v_hlen = v_length;
+-          v_length = 0u;
+-        }
+-        v_hdist += v_hdist_adjustment;
+-        if (self->private_impl.f_history_index < v_hdist) {
+-          status = wuffs_base__make_status(wuffs_deflate__error__bad_distance);
+-          goto exit;
+-        }
+-        wuffs_base__io_writer__limited_copy_u32_from_slice(
+-            &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767u), 33025));
+-        if (v_length == 0u) {
+-          goto label__loop__continue;
+-        }
+-        if ((((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) || (((uint64_t)(v_length)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_length + 8u))) > ((uint64_t)(io2_a_dst - iop_a_dst)))) {
+-          status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_distance);
+-          goto exit;
+-        }
+-      }
+-      if ((v_dist_minus_1 + 1u) >= 8u) {
+-        wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast(
+-            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
+-      } else {
+-        wuffs_base__io_writer__limited_copy_u32_from_history_fast(
+-            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
+-      }
+-    } while (0);
+-  }
+-  while (v_n_bits >= 8u) {
+-    v_n_bits -= 8u;
+-    if (iop_a_src > io1_a_src) {
+-      iop_a_src--;
+-    } else {
+-      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_i_o);
++    v_run = ((((uint32_t)(v_child)) & 3u) << v_run_shift);
++    v_run_shift += 1u;
++    v_i = v_block_size;
++    v_j = (v_run + v_block_size);
++    if (v_j > self->private_impl.f_max_incl_block_size) {
++      status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
+       goto exit;
+     }
++    v_block_size = v_j;
++    v_mtft0 = ((uint32_t)(self->private_data.f_mtft[0u]));
++    self->private_data.f_letter_counts[v_mtft0] += v_run;
++    while (v_i < v_j) {
++      self->private_data.f_bwt[v_i] = v_mtft0;
++      v_i += 1u;
++    }
+   }
+-  self->private_impl.f_bits = (v_bits & ((((uint32_t)(1u)) << v_n_bits) - 1u));
++  self->private_impl.f_bits = v_bits;
+   self->private_impl.f_n_bits = v_n_bits;
+-  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> self->private_impl.f_n_bits) != 0u)) {
+-    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
+-    goto exit;
+-  }
++  self->private_impl.f_block_size = v_block_size;
++  self->private_impl.f_decode_huffman_which = v_which;
++  self->private_impl.f_decode_huffman_ticks = v_ticks;
++  self->private_impl.f_decode_huffman_section = v_section;
++  self->private_impl.f_decode_huffman_run_shift = v_run_shift;
++  status = wuffs_base__make_status(NULL);
++  goto ok;
++
++  ok:
+   goto exit;
+   exit:
+-  if (a_dst && a_dst->data.ptr) {
+-    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-  }
+   if (a_src && a_src->data.ptr) {
+     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+@@ -35863,52 +35554,25 @@ wuffs_deflate__decoder__decode_huffman_fast32(
+   return status;
+ }
+ 
+-// -------- func deflate.decoder.decode_huffman_fast64
++// -------- func bzip2.decoder.decode_huffman_slow
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_deflate__decoder__decode_huffman_fast64(
+-    wuffs_deflate__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
++wuffs_bzip2__decoder__decode_huffman_slow(
++    wuffs_bzip2__decoder* self,
+     wuffs_base__io_buffer* a_src) {
+-  return (*self->private_impl.choosy_decode_huffman_fast64)(self, a_dst, a_src);
+-}
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_deflate__decoder__decode_huffman_fast64__choosy_default(
+-    wuffs_deflate__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  uint64_t v_bits = 0;
+-  uint32_t v_n_bits = 0;
+-  uint32_t v_table_entry = 0;
+-  uint32_t v_table_entry_n_bits = 0;
+-  uint64_t v_lmask = 0;
+-  uint64_t v_dmask = 0;
+-  uint32_t v_redir_top = 0;
+-  uint32_t v_redir_mask = 0;
+-  uint32_t v_length = 0;
+-  uint32_t v_dist_minus_1 = 0;
+-  uint32_t v_hlen = 0;
+-  uint32_t v_hdist = 0;
+-  uint32_t v_hdist_adjustment = 0;
++  uint8_t v_c8 = 0;
++  uint32_t v_node_index = 0;
++  uint16_t v_child = 0;
++  uint32_t v_child_ff = 0;
++  uint32_t v_i = 0;
++  uint32_t v_j = 0;
++  uint32_t v_output = 0;
++  uint32_t v_run = 0;
++  uint32_t v_mtft0 = 0;
+ 
+-  uint8_t* iop_a_dst = NULL;
+-  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_dst && a_dst->data.ptr) {
+-    io0_a_dst = a_dst->data.ptr;
+-    io1_a_dst = io0_a_dst + a_dst->meta.wi;
+-    iop_a_dst = io1_a_dst;
+-    io2_a_dst = io0_a_dst + a_dst->data.len;
+-    if (a_dst->meta.closed) {
+-      io2_a_dst = iop_a_dst;
+-    }
+-  }
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -35920,160 +35584,101 @@ wuffs_deflate__decoder__decode_huffman_fast64__choosy_default(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
+-    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
+-    goto exit;
+-  }
+-  v_bits = ((uint64_t)(self->private_impl.f_bits));
+-  v_n_bits = self->private_impl.f_n_bits;
+-  v_lmask = ((((uint64_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u);
+-  v_dmask = ((((uint64_t)(1u)) << self->private_impl.f_n_huffs_bits[1u]) - 1u);
+-  if (self->private_impl.f_transformed_history_count < (a_dst ? a_dst->meta.pos : 0u)) {
+-    status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position);
+-    goto exit;
++  uint32_t coro_susp_point = self->private_impl.p_decode_huffman_slow;
++  if (coro_susp_point) {
++    v_node_index = self->private_data.s_decode_huffman_slow.v_node_index;
+   }
+-  v_hdist_adjustment = ((uint32_t)((self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0u))));
+-  label__loop__continue:;
+-  while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 266u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 8u)) {
+-    v_bits |= ((uint64_t)(wuffs_base__peek_u64le__no_bounds_check(iop_a_src) << (v_n_bits & 63u)));
+-    iop_a_src += ((63u - (v_n_bits & 63u)) >> 3u);
+-    v_n_bits |= 56u;
+-    v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_lmask)];
+-    v_table_entry_n_bits = (v_table_entry & 15u);
+-    v_bits >>= v_table_entry_n_bits;
+-    v_n_bits -= v_table_entry_n_bits;
+-    if ((v_table_entry >> 31u) != 0u) {
+-      (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
+-      continue;
+-    } else if ((v_table_entry >> 30u) != 0u) {
+-    } else if ((v_table_entry >> 29u) != 0u) {
+-      self->private_impl.f_end_of_block = true;
+-      break;
+-    } else if ((v_table_entry >> 28u) != 0u) {
+-      v_redir_top = ((v_table_entry >> 8u) & 65535u);
+-      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
+-      v_table_entry = self->private_data.f_huffs[0u][((v_redir_top + (((uint32_t)(v_bits)) & v_redir_mask)) & 1023u)];
+-      v_table_entry_n_bits = (v_table_entry & 15u);
+-      v_bits >>= v_table_entry_n_bits;
+-      v_n_bits -= v_table_entry_n_bits;
+-      if ((v_table_entry >> 31u) != 0u) {
+-        (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
+-        continue;
+-      } else if ((v_table_entry >> 30u) != 0u) {
+-      } else if ((v_table_entry >> 29u) != 0u) {
+-        self->private_impl.f_end_of_block = true;
+-        break;
+-      } else if ((v_table_entry >> 28u) != 0u) {
+-        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-        goto exit;
+-      } else if ((v_table_entry >> 27u) != 0u) {
+-        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
+-        goto exit;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while ( ! (self->private_impl.p_decode_huffman_slow != 0)) {
++      if (self->private_impl.f_decode_huffman_ticks > 0u) {
++        self->private_impl.f_decode_huffman_ticks -= 1u;
+       } else {
+-        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-        goto exit;
+-      }
+-    } else if ((v_table_entry >> 27u) != 0u) {
+-      status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
+-      goto exit;
+-    } else {
+-      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-      goto exit;
+-    }
+-    v_length = (((v_table_entry >> 8u) & 255u) + 3u);
+-    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
+-    if (v_table_entry_n_bits > 0u) {
+-      v_length = (((v_length + 253u + ((uint32_t)(((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 255u) + 3u);
+-      v_bits >>= v_table_entry_n_bits;
+-      v_n_bits -= v_table_entry_n_bits;
+-    }
+-    v_table_entry = self->private_data.f_huffs[1u][(v_bits & v_dmask)];
+-    v_table_entry_n_bits = (v_table_entry & 15u);
+-    v_bits >>= v_table_entry_n_bits;
+-    v_n_bits -= v_table_entry_n_bits;
+-    if ((v_table_entry >> 28u) == 1u) {
+-      v_redir_top = ((v_table_entry >> 8u) & 65535u);
+-      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
+-      v_table_entry = self->private_data.f_huffs[1u][((v_redir_top + (((uint32_t)(v_bits)) & v_redir_mask)) & 1023u)];
+-      v_table_entry_n_bits = (v_table_entry & 15u);
+-      v_bits >>= v_table_entry_n_bits;
+-      v_n_bits -= v_table_entry_n_bits;
+-    }
+-    if ((v_table_entry >> 24u) != 64u) {
+-      if ((v_table_entry >> 24u) == 8u) {
+-        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
+-        goto exit;
++        self->private_impl.f_decode_huffman_ticks = 49u;
++        self->private_impl.f_decode_huffman_section += 1u;
++        if (self->private_impl.f_decode_huffman_section >= self->private_impl.f_num_sections) {
++          status = wuffs_base__make_status(wuffs_bzip2__error__bad_number_of_sections);
++          goto exit;
++        }
++        self->private_impl.f_decode_huffman_which = WUFFS_BZIP2__CLAMP_TO_5[((uint8_t)(self->private_data.f_huffman_selectors[(self->private_impl.f_decode_huffman_section & 32767u)] & 7u))];
+       }
+-      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-      goto exit;
+-    }
+-    v_dist_minus_1 = ((v_table_entry >> 8u) & 32767u);
+-    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
+-    v_dist_minus_1 = ((v_dist_minus_1 + ((uint32_t)(((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 32767u);
+-    v_bits >>= v_table_entry_n_bits;
+-    v_n_bits -= v_table_entry_n_bits;
+-    do {
+-      if (((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
+-        v_hlen = 0u;
+-        v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1u))) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
+-        if (v_length > v_hdist) {
+-          v_length -= v_hdist;
+-          v_hlen = v_hdist;
+-        } else {
+-          v_hlen = v_length;
+-          v_length = 0u;
++      v_node_index = 0u;
++      while (true) {
++        if (self->private_impl.f_n_bits <= 0u) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint8_t t_0 = *iop_a_src++;
++            v_c8 = t_0;
++          }
++          self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
++          self->private_impl.f_n_bits = 8u;
+         }
+-        v_hdist += v_hdist_adjustment;
+-        if (self->private_impl.f_history_index < v_hdist) {
+-          status = wuffs_base__make_status(wuffs_deflate__error__bad_distance);
+-          goto exit;
++        v_child = self->private_data.f_huffman_trees[self->private_impl.f_decode_huffman_which][v_node_index][(self->private_impl.f_bits >> 31u)];
++        self->private_impl.f_bits <<= 1u;
++        self->private_impl.f_n_bits -= 1u;
++        if (v_child < 257u) {
++          v_node_index = ((uint32_t)(v_child));
++          continue;
++        } else if (v_child < 768u) {
++          v_child_ff = ((uint32_t)(((uint16_t)(v_child & 255u))));
++          v_output = ((uint32_t)(self->private_data.f_mtft[v_child_ff]));
++          wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_mtft, 1, (1u + v_child_ff)), wuffs_base__make_slice_u8(self->private_data.f_mtft, v_child_ff));
++          self->private_data.f_mtft[0u] = ((uint8_t)(v_output));
++          self->private_data.f_letter_counts[v_output] += 1u;
++          self->private_data.f_bwt[self->private_impl.f_block_size] = v_output;
++          if (self->private_impl.f_block_size >= self->private_impl.f_max_incl_block_size) {
++            status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
++            goto exit;
++          }
++          self->private_impl.f_block_size += 1u;
++          self->private_impl.f_decode_huffman_run_shift = 0u;
++          break;
++        } else if (v_child == 768u) {
++          self->private_impl.f_decode_huffman_finished = true;
++          goto label__outer__break;
+         }
+-        wuffs_base__io_writer__limited_copy_u32_from_slice(
+-            &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767u), 33025));
+-        if (v_length == 0u) {
+-          goto label__loop__continue;
++        if (self->private_impl.f_decode_huffman_run_shift >= 23u) {
++          status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
++          goto exit;
+         }
+-        if ((((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) || (((uint64_t)(v_length)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_length + 8u))) > ((uint64_t)(io2_a_dst - iop_a_dst)))) {
+-          status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_distance);
++        v_run = ((((uint32_t)(v_child)) & 3u) << self->private_impl.f_decode_huffman_run_shift);
++        self->private_impl.f_decode_huffman_run_shift += 1u;
++        v_i = self->private_impl.f_block_size;
++        v_j = (v_run + self->private_impl.f_block_size);
++        if (v_j > self->private_impl.f_max_incl_block_size) {
++          status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
+           goto exit;
+         }
++        self->private_impl.f_block_size = v_j;
++        v_mtft0 = ((uint32_t)(self->private_data.f_mtft[0u]));
++        self->private_data.f_letter_counts[v_mtft0] += v_run;
++        while (v_i < v_j) {
++          self->private_data.f_bwt[v_i] = v_mtft0;
++          v_i += 1u;
++        }
++        break;
+       }
+-      if ((v_dist_minus_1 + 1u) >= 8u) {
+-        wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast(
+-            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
+-      } else if ((v_dist_minus_1 + 1u) == 1u) {
+-        wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast(
+-            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
+-      } else {
+-        wuffs_base__io_writer__limited_copy_u32_from_history_fast(
+-            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
+-      }
+-    } while (0);
+-  }
+-  if (v_n_bits > 63u) {
+-    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
+-    goto exit;
+-  }
+-  while (v_n_bits >= 8u) {
+-    v_n_bits -= 8u;
+-    if (iop_a_src > io1_a_src) {
+-      iop_a_src--;
+-    } else {
+-      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_i_o);
+-      goto exit;
+     }
+-  }
+-  self->private_impl.f_bits = ((uint32_t)((v_bits & ((((uint64_t)(1u)) << v_n_bits) - 1u))));
+-  self->private_impl.f_n_bits = v_n_bits;
+-  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> self->private_impl.f_n_bits) != 0u)) {
+-    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
++    label__outer__break:;
++
++    goto ok;
++    ok:
++    self->private_impl.p_decode_huffman_slow = 0;
+     goto exit;
+   }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_huffman_slow = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_huffman_slow.v_node_index = v_node_index;
++
+   goto exit;
+   exit:
+-  if (a_dst && a_dst->data.ptr) {
+-    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-  }
+   if (a_src && a_src->data.ptr) {
+     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+@@ -36081,40 +35686,229 @@ wuffs_deflate__decoder__decode_huffman_fast64__choosy_default(
+   return status;
+ }
+ 
+-// -------- func deflate.decoder.decode_huffman_slow
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BZIP2)
++
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CBOR)
++
++// ---------------- Status Codes Implementations
++
++const char wuffs_cbor__error__bad_input[] = "#cbor: bad input";
++const char wuffs_cbor__error__unsupported_recursion_depth[] = "#cbor: unsupported recursion depth";
++const char wuffs_cbor__error__internal_error_inconsistent_i_o[] = "#cbor: internal error: inconsistent I/O";
++const char wuffs_cbor__error__internal_error_inconsistent_token_length[] = "#cbor: internal error: inconsistent token length";
++
++// ---------------- Private Consts
++
++static const uint32_t
++WUFFS_CBOR__LITERALS[4] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  8388612u, 8388616u, 8388610u, 8388609u,
++};
++
++static const uint8_t
++WUFFS_CBOR__TOKEN_LENGTHS[32] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  1u, 1u, 1u, 1u, 1u, 1u, 1u, 1u,
++  1u, 1u, 1u, 1u, 1u, 1u, 1u, 1u,
++  1u, 1u, 1u, 1u, 1u, 1u, 1u, 1u,
++  2u, 3u, 5u, 9u, 0u, 0u, 0u, 1u,
++};
++
++// ---------------- Private Initializer Prototypes
++
++// ---------------- Private Function Prototypes
++
++// ---------------- VTables
++
++const wuffs_base__token_decoder__func_ptrs
++wuffs_cbor__decoder__func_ptrs_for__wuffs_base__token_decoder = {
++  (wuffs_base__status(*)(void*,
++      wuffs_base__token_buffer*,
++      wuffs_base__io_buffer*,
++      wuffs_base__slice_u8))(&wuffs_cbor__decoder__decode_tokens),
++  (uint64_t(*)(const void*,
++      uint32_t))(&wuffs_cbor__decoder__get_quirk),
++  (wuffs_base__status(*)(void*,
++      uint32_t,
++      uint64_t))(&wuffs_cbor__decoder__set_quirk),
++  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_cbor__decoder__workbuf_len),
++};
++
++// ---------------- Initializer Implementations
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_cbor__decoder__initialize(
++    wuffs_cbor__decoder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options){
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (sizeof(*self) != sizeof_star_self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  }
++  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
++      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++  }
++
++  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
++    // The whole point of this if-check is to detect an uninitialized *self.
++    // We disable the warning on GCC. Clang-5.0 does not have this warning.
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++#endif
++    if (self->private_impl.magic != 0) {
++      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++    }
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++  } else {
++    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
++      memset(self, 0, sizeof(*self));
++      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
++    } else {
++      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++    }
++  }
++
++  self->private_impl.magic = WUFFS_BASE__MAGIC;
++  self->private_impl.vtable_for__wuffs_base__token_decoder.vtable_name =
++      wuffs_base__token_decoder__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__token_decoder.function_pointers =
++      (const void*)(&wuffs_cbor__decoder__func_ptrs_for__wuffs_base__token_decoder);
++  return wuffs_base__make_status(NULL);
++}
++
++wuffs_cbor__decoder*
++wuffs_cbor__decoder__alloc(void) {
++  wuffs_cbor__decoder* x =
++      (wuffs_cbor__decoder*)(calloc(1, sizeof(wuffs_cbor__decoder)));
++  if (!x) {
++    return NULL;
++  }
++  if (wuffs_cbor__decoder__initialize(
++      x, sizeof(wuffs_cbor__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++    free(x);
++    return NULL;
++  }
++  return x;
++}
++
++size_t
++sizeof__wuffs_cbor__decoder(void) {
++  return sizeof(wuffs_cbor__decoder);
++}
++
++// ---------------- Function Implementations
++
++// -------- func cbor.decoder.get_quirk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_deflate__decoder__decode_huffman_slow(
+-    wuffs_deflate__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src) {
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_cbor__decoder__get_quirk(
++    const wuffs_cbor__decoder* self,
++    uint32_t a_key) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  return 0u;
++}
++
++// -------- func cbor.decoder.set_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_cbor__decoder__set_quirk(
++    wuffs_cbor__decoder* self,
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++
++  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++}
++
++// -------- func cbor.decoder.workbuf_len
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_cbor__decoder__workbuf_len(
++    const wuffs_cbor__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++
++  return wuffs_base__utility__empty_range_ii_u64();
++}
++
++// -------- func cbor.decoder.decode_tokens
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_cbor__decoder__decode_tokens(
++    wuffs_cbor__decoder* self,
++    wuffs_base__token_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_dst || !a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 1)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t v_bits = 0;
+-  uint32_t v_n_bits = 0;
+-  uint32_t v_table_entry = 0;
+-  uint32_t v_table_entry_n_bits = 0;
+-  uint32_t v_lmask = 0;
+-  uint32_t v_dmask = 0;
+-  uint32_t v_b0 = 0;
+-  uint32_t v_redir_top = 0;
+-  uint32_t v_redir_mask = 0;
+-  uint32_t v_b1 = 0;
+-  uint32_t v_length = 0;
+-  uint32_t v_b2 = 0;
+-  uint32_t v_b3 = 0;
+-  uint32_t v_b4 = 0;
+-  uint32_t v_dist_minus_1 = 0;
+-  uint32_t v_b5 = 0;
+-  uint32_t v_n_copied = 0;
+-  uint32_t v_hlen = 0;
+-  uint32_t v_hdist = 0;
++  uint64_t v_string_length = 0;
++  uint64_t v_n64 = 0;
++  uint32_t v_depth = 0;
++  uint32_t v_stack_byte = 0;
++  uint32_t v_stack_bit = 0;
++  uint32_t v_stack_val = 0;
++  uint32_t v_token_length = 0;
++  uint32_t v_vminor = 0;
++  uint32_t v_vminor_alt = 0;
++  uint32_t v_continued = 0;
++  uint8_t v_c8 = 0;
++  uint8_t v_c_major = 0;
++  uint8_t v_c_minor = 0;
++  bool v_tagged = false;
++  uint8_t v_indefinite_string_major_type = 0;
+ 
+-  uint8_t* iop_a_dst = NULL;
+-  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  wuffs_base__token* iop_a_dst = NULL;
++  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+   if (a_dst && a_dst->data.ptr) {
+     io0_a_dst = a_dst->data.ptr;
+     io1_a_dst = io0_a_dst + a_dst->meta.wi;
+@@ -36135,269 +35929,513 @@ wuffs_deflate__decoder__decode_huffman_slow(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_huffman_slow[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_tokens;
+   if (coro_susp_point) {
+-    v_bits = self->private_data.s_decode_huffman_slow[0].v_bits;
+-    v_n_bits = self->private_data.s_decode_huffman_slow[0].v_n_bits;
+-    v_table_entry_n_bits = self->private_data.s_decode_huffman_slow[0].v_table_entry_n_bits;
+-    v_lmask = self->private_data.s_decode_huffman_slow[0].v_lmask;
+-    v_dmask = self->private_data.s_decode_huffman_slow[0].v_dmask;
+-    v_redir_top = self->private_data.s_decode_huffman_slow[0].v_redir_top;
+-    v_redir_mask = self->private_data.s_decode_huffman_slow[0].v_redir_mask;
+-    v_length = self->private_data.s_decode_huffman_slow[0].v_length;
+-    v_dist_minus_1 = self->private_data.s_decode_huffman_slow[0].v_dist_minus_1;
++    v_string_length = self->private_data.s_decode_tokens.v_string_length;
++    v_depth = self->private_data.s_decode_tokens.v_depth;
++    v_tagged = self->private_data.s_decode_tokens.v_tagged;
++    v_indefinite_string_major_type = self->private_data.s_decode_tokens.v_indefinite_string_major_type;
+   }
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
+-      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
+-      goto exit;
++    if (self->private_impl.f_end_of_data) {
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
+     }
+-    v_bits = self->private_impl.f_bits;
+-    v_n_bits = self->private_impl.f_n_bits;
+-    v_lmask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u);
+-    v_dmask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[1u]) - 1u);
+-    label__loop__continue:;
+-    while ( ! (self->private_impl.p_decode_huffman_slow[0] != 0)) {
++    label__outer__continue:;
++    while (true) {
+       while (true) {
+-        v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_lmask)];
+-        v_table_entry_n_bits = (v_table_entry & 15u);
+-        if (v_n_bits >= v_table_entry_n_bits) {
+-          v_bits >>= v_table_entry_n_bits;
+-          v_n_bits -= v_table_entry_n_bits;
+-          break;
+-        }
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
++        do {
++          if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 1u) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++            goto label__outer__continue;
+           }
+-          uint32_t t_0 = *iop_a_src++;
+-          v_b0 = t_0;
+-        }
+-        v_bits |= (v_b0 << v_n_bits);
+-        v_n_bits += 8u;
+-      }
+-      if ((v_table_entry >> 31u) != 0u) {
+-        self->private_data.s_decode_huffman_slow[0].scratch = ((uint8_t)((v_table_entry >> 8u)));
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-        if (iop_a_dst == io2_a_dst) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-          goto suspend;
+-        }
+-        *iop_a_dst++ = ((uint8_t)(self->private_data.s_decode_huffman_slow[0].scratch));
+-        continue;
+-      } else if ((v_table_entry >> 30u) != 0u) {
+-      } else if ((v_table_entry >> 29u) != 0u) {
+-        self->private_impl.f_end_of_block = true;
+-        break;
+-      } else if ((v_table_entry >> 28u) != 0u) {
+-        v_redir_top = ((v_table_entry >> 8u) & 65535u);
+-        v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
+-        while (true) {
+-          v_table_entry = self->private_data.f_huffs[0u][((v_redir_top + (v_bits & v_redir_mask)) & 1023u)];
+-          v_table_entry_n_bits = (v_table_entry & 15u);
+-          if (v_n_bits >= v_table_entry_n_bits) {
+-            v_bits >>= v_table_entry_n_bits;
+-            v_n_bits -= v_table_entry_n_bits;
+-            break;
++          if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++            if (a_src && a_src->meta.closed) {
++              status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
++              goto exit;
++            }
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
++            goto label__outer__continue;
+           }
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
++          v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++          if ((v_indefinite_string_major_type != 0u) && (v_indefinite_string_major_type != ((uint8_t)(v_c8 >> 5u)))) {
++            if (v_c8 != 255u) {
++              status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
++              goto exit;
+             }
+-            uint32_t t_1 = *iop_a_src++;
+-            v_b1 = t_1;
++            v_vminor = 4194560u;
++            if (v_indefinite_string_major_type == 3u) {
++              v_vminor |= 19u;
++            }
++            v_indefinite_string_major_type = 0u;
++            iop_a_src += 1u;
++            *iop_a_dst++ = wuffs_base__make_token(
++                (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++            goto label__goto_parsed_a_leaf_value__break;
+           }
+-          v_bits |= (v_b1 << v_n_bits);
+-          v_n_bits += 8u;
+-        }
+-        if ((v_table_entry >> 31u) != 0u) {
+-          self->private_data.s_decode_huffman_slow[0].scratch = ((uint8_t)((v_table_entry >> 8u)));
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-          if (iop_a_dst == io2_a_dst) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-            goto suspend;
++          iop_a_src += 1u;
++          v_c_major = ((uint8_t)(((uint8_t)(v_c8 >> 5u))));
++          v_c_minor = ((uint8_t)(v_c8 & 31u));
++          if (v_c_minor < 24u) {
++            v_string_length = ((uint64_t)(v_c_minor));
++          } else {
++            while (true) {
++              if (v_c_minor == 24u) {
++                if (((uint64_t)(io2_a_src - iop_a_src)) >= 1u) {
++                  v_string_length = ((uint64_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src)));
++                  iop_a_src += 1u;
++                  break;
++                }
++              } else if (v_c_minor == 25u) {
++                if (((uint64_t)(io2_a_src - iop_a_src)) >= 2u) {
++                  v_string_length = ((uint64_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
++                  iop_a_src += 2u;
++                  break;
++                }
++              } else if (v_c_minor == 26u) {
++                if (((uint64_t)(io2_a_src - iop_a_src)) >= 4u) {
++                  v_string_length = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
++                  iop_a_src += 4u;
++                  break;
++                }
++              } else if (v_c_minor == 27u) {
++                if (((uint64_t)(io2_a_src - iop_a_src)) >= 8u) {
++                  v_string_length = wuffs_base__peek_u64be__no_bounds_check(iop_a_src);
++                  iop_a_src += 8u;
++                  break;
++                }
++              } else {
++                v_string_length = 0u;
++                break;
++              }
++              if (iop_a_src > io1_a_src) {
++                iop_a_src--;
++                if (a_src && a_src->meta.closed) {
++                  status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
++                  goto exit;
++                }
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
++                goto label__outer__continue;
++              }
++              status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_i_o);
++              goto exit;
++            }
+           }
+-          *iop_a_dst++ = ((uint8_t)(self->private_data.s_decode_huffman_slow[0].scratch));
+-          continue;
+-        } else if ((v_table_entry >> 30u) != 0u) {
+-        } else if ((v_table_entry >> 29u) != 0u) {
+-          self->private_impl.f_end_of_block = true;
+-          break;
+-        } else if ((v_table_entry >> 28u) != 0u) {
+-          status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-          goto exit;
+-        } else if ((v_table_entry >> 27u) != 0u) {
+-          status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
+-          goto exit;
+-        } else {
+-          status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++          if (v_c_major == 0u) {
++            if (v_c_minor < 26u) {
++              *iop_a_dst++ = wuffs_base__make_token(
++                  (((uint64_t)((14680064u | ((uint32_t)((v_string_length & 65535u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++              goto label__goto_parsed_a_leaf_value__break;
++            } else if (v_c_minor < 28u) {
++              *iop_a_dst++ = wuffs_base__make_token(
++                  (((uint64_t)((14680064u | ((uint32_t)((v_string_length >> 46u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                  (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++              *iop_a_dst++ = wuffs_base__make_token(
++                  (~(v_string_length & 70368744177663u) << WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT) |
++                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++              goto label__goto_parsed_a_leaf_value__break;
++            }
++          } else if (v_c_major == 1u) {
++            if (v_c_minor < 26u) {
++              *iop_a_dst++ = wuffs_base__make_token(
++                  (((uint64_t)((12582912u | (2097151u - ((uint32_t)((v_string_length & 65535u))))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++              goto label__goto_parsed_a_leaf_value__break;
++            } else if (v_c_minor < 28u) {
++              if (v_string_length < 9223372036854775808u) {
++                *iop_a_dst++ = wuffs_base__make_token(
++                    (((uint64_t)((12582912u | (2097151u - ((uint32_t)((v_string_length >> 46u))))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                    (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                    (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                *iop_a_dst++ = wuffs_base__make_token(
++                    (~((18446744073709551615u - v_string_length) & 70368744177663u) << WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT) |
++                    (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++              } else {
++                *iop_a_dst++ = wuffs_base__make_token(
++                    (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
++                    (((uint64_t)(16777216u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                    (((uint64_t)(9u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++              }
++              goto label__goto_parsed_a_leaf_value__break;
++            }
++          } else if (v_c_major == 2u) {
++            if (v_c_minor < 28u) {
++              if (v_string_length == 0u) {
++                *iop_a_dst++ = wuffs_base__make_token(
++                    (((uint64_t)(4194560u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                    (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                goto label__goto_parsed_a_leaf_value__break;
++              }
++              *iop_a_dst++ = wuffs_base__make_token(
++                  (((uint64_t)(4194560u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++            } else if (v_c_minor == 31u) {
++              if (v_indefinite_string_major_type != 0u) {
++                break;
++              }
++              v_indefinite_string_major_type = 2u;
++              *iop_a_dst++ = wuffs_base__make_token(
++                  (((uint64_t)(4194560u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++              goto label__outer__continue;
++            } else {
++              break;
++            }
++            while (true) {
++              if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
++                continue;
++              }
++              v_n64 = wuffs_base__u64__min(v_string_length, ((uint64_t)(io2_a_src - iop_a_src)));
++              v_token_length = ((uint32_t)((v_n64 & 65535u)));
++              if (v_n64 > 65535u) {
++                v_token_length = 65535u;
++              } else if (v_token_length <= 0u) {
++                if (a_src && a_src->meta.closed) {
++                  status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
++                  goto exit;
++                }
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
++                continue;
++              }
++              if (((uint64_t)(io2_a_src - iop_a_src)) < ((uint64_t)(v_token_length))) {
++                status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_token_length);
++                goto exit;
++              }
++              v_string_length -= ((uint64_t)(v_token_length));
++              v_continued = 0u;
++              if ((v_string_length > 0u) || (v_indefinite_string_major_type > 0u)) {
++                v_continued = 1u;
++              }
++              iop_a_src += v_token_length;
++              *iop_a_dst++ = wuffs_base__make_token(
++                  (((uint64_t)(4194816u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                  (((uint64_t)(v_continued)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                  (((uint64_t)(v_token_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++              if (v_string_length > 0u) {
++                continue;
++              } else if (v_indefinite_string_major_type > 0u) {
++                goto label__outer__continue;
++              }
++              goto label__goto_parsed_a_leaf_value__break;
++            }
++          } else if (v_c_major == 3u) {
++            if (v_c_minor < 28u) {
++              if (v_string_length == 0u) {
++                *iop_a_dst++ = wuffs_base__make_token(
++                    (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                    (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                goto label__goto_parsed_a_leaf_value__break;
++              }
++              *iop_a_dst++ = wuffs_base__make_token(
++                  (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++            } else if (v_c_minor == 31u) {
++              if (v_indefinite_string_major_type != 0u) {
++                break;
++              }
++              v_indefinite_string_major_type = 3u;
++              *iop_a_dst++ = wuffs_base__make_token(
++                  (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++              goto label__outer__continue;
++            } else {
++              break;
++            }
++            while (true) {
++              if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
++                continue;
++              }
++              v_n64 = wuffs_base__u64__min(v_string_length, 65535u);
++              v_n64 = ((uint64_t)(wuffs_base__utf_8__longest_valid_prefix(iop_a_src,
++                  ((size_t)(wuffs_base__u64__min(((uint64_t)(io2_a_src - iop_a_src)), v_n64))))));
++              v_token_length = ((uint32_t)((v_n64 & 65535u)));
++              if (v_token_length <= 0u) {
++                if ((a_src && a_src->meta.closed) || (((uint64_t)(io2_a_src - iop_a_src)) >= 4u)) {
++                  status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
++                  goto exit;
++                }
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
++                continue;
++              }
++              if (((uint64_t)(io2_a_src - iop_a_src)) < ((uint64_t)(v_token_length))) {
++                status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_token_length);
++                goto exit;
++              }
++              v_string_length -= ((uint64_t)(v_token_length));
++              v_continued = 0u;
++              if ((v_string_length > 0u) || (v_indefinite_string_major_type > 0u)) {
++                v_continued = 1u;
++              }
++              iop_a_src += v_token_length;
++              *iop_a_dst++ = wuffs_base__make_token(
++                  (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                  (((uint64_t)(v_continued)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                  (((uint64_t)(v_token_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++              if (v_string_length > 0u) {
++                continue;
++              } else if (v_indefinite_string_major_type > 0u) {
++                goto label__outer__continue;
++              }
++              goto label__goto_parsed_a_leaf_value__break;
++            }
++          } else if (v_c_major == 4u) {
++            if (WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor] == 0u) {
++              break;
++            } else if (v_depth >= 1024u) {
++              v_token_length = ((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor]));
++              while ((v_token_length > 0u) && (iop_a_src > io1_a_src)) {
++                iop_a_src--;
++                v_token_length -= 1u;
++              }
++              status = wuffs_base__make_status(wuffs_cbor__error__unsupported_recursion_depth);
++              goto exit;
++            }
++            v_vminor = 2105361u;
++            v_vminor_alt = 2101282u;
++            if (v_depth > 0u) {
++              v_stack_byte = ((v_depth - 1u) / 16u);
++              v_stack_bit = (((v_depth - 1u) & 15u) * 2u);
++              if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
++                v_vminor = 2105377u;
++                v_vminor_alt = 2105378u;
++              } else {
++                v_vminor = 2105409u;
++                v_vminor_alt = 2113570u;
++              }
++            }
++            *iop_a_dst++ = wuffs_base__make_token(
++                (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++            if (v_c_minor == 0u) {
++              *iop_a_dst++ = wuffs_base__make_token(
++                  (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                  (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++              goto label__goto_parsed_a_leaf_value__break;
++            }
++            v_stack_byte = (v_depth / 16u);
++            v_stack_bit = ((v_depth & 15u) * 2u);
++            self->private_data.f_stack[v_stack_byte] &= (4294967295u ^ (((uint32_t)(3u)) << v_stack_bit));
++            self->private_data.f_container_num_remaining[v_depth] = v_string_length;
++            v_depth += 1u;
++            v_tagged = false;
++            goto label__outer__continue;
++          } else if (v_c_major == 5u) {
++            if (WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor] == 0u) {
++              break;
++            } else if (v_depth >= 1024u) {
++              v_token_length = ((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor]));
++              while ((v_token_length > 0u) && (iop_a_src > io1_a_src)) {
++                iop_a_src--;
++                v_token_length -= 1u;
++              }
++              status = wuffs_base__make_status(wuffs_cbor__error__unsupported_recursion_depth);
++              goto exit;
++            }
++            v_vminor = 2113553u;
++            v_vminor_alt = 2101314u;
++            if (v_depth > 0u) {
++              v_stack_byte = ((v_depth - 1u) / 16u);
++              v_stack_bit = (((v_depth - 1u) & 15u) * 2u);
++              if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
++                v_vminor = 2113569u;
++                v_vminor_alt = 2105410u;
++              } else {
++                v_vminor = 2113601u;
++                v_vminor_alt = 2113602u;
++              }
++            }
++            *iop_a_dst++ = wuffs_base__make_token(
++                (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++            if (v_c_minor == 0u) {
++              *iop_a_dst++ = wuffs_base__make_token(
++                  (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                  (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++              goto label__goto_parsed_a_leaf_value__break;
++            }
++            v_stack_byte = (v_depth / 16u);
++            v_stack_bit = ((v_depth & 15u) * 2u);
++            self->private_data.f_stack[v_stack_byte] |= (((uint32_t)(3u)) << v_stack_bit);
++            self->private_data.f_container_num_remaining[v_depth] = v_string_length;
++            v_depth += 1u;
++            v_tagged = false;
++            goto label__outer__continue;
++          } else if (v_c_major == 6u) {
++            if (v_c_minor >= 28u) {
++              break;
++            }
++            if (v_string_length < 262144u) {
++              *iop_a_dst++ = wuffs_base__make_token(
++                  (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
++                  (((uint64_t)((4194304u | ((uint32_t)(v_string_length))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++            } else {
++              *iop_a_dst++ = wuffs_base__make_token(
++                  (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
++                  (((uint64_t)((4194304u | ((uint32_t)((v_string_length >> 46u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                  (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++              *iop_a_dst++ = wuffs_base__make_token(
++                  (~(v_string_length & 70368744177663u) << WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT) |
++                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++            }
++            v_tagged = true;
++            goto label__outer__continue;
++          } else if (v_c_major == 7u) {
++            if (v_c_minor < 20u) {
++              *iop_a_dst++ = wuffs_base__make_token(
++                  (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
++                  (((uint64_t)((8388608u | ((uint32_t)((v_string_length & 255u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++              goto label__goto_parsed_a_leaf_value__break;
++            } else if (v_c_minor < 24u) {
++              *iop_a_dst++ = wuffs_base__make_token(
++                  (((uint64_t)(WUFFS_CBOR__LITERALS[((uint8_t)(v_c_minor & 3u))])) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++              goto label__goto_parsed_a_leaf_value__break;
++            } else if (v_c_minor == 24u) {
++              if (v_string_length < 24u) {
++                if ( ! (iop_a_src > io1_a_src)) {
++                  status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_i_o);
++                  goto exit;
++                }
++                iop_a_src--;
++                break;
++              }
++              *iop_a_dst++ = wuffs_base__make_token(
++                  (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
++                  (((uint64_t)((8388608u | ((uint32_t)((v_string_length & 255u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                  (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++              goto label__goto_parsed_a_leaf_value__break;
++            } else if (v_c_minor < 28u) {
++              *iop_a_dst++ = wuffs_base__make_token(
++                  (((uint64_t)(10490113u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++              goto label__goto_parsed_a_leaf_value__break;
++            } else if (v_c_minor == 31u) {
++              if (v_tagged || (v_depth <= 0u)) {
++                break;
++              }
++              v_depth -= 1u;
++              if (self->private_data.f_container_num_remaining[v_depth] != 0u) {
++                break;
++              }
++              v_stack_byte = (v_depth / 16u);
++              v_stack_bit = ((v_depth & 15u) * 2u);
++              v_stack_val = (3u & (self->private_data.f_stack[v_stack_byte] >> v_stack_bit));
++              if (v_stack_val == 1u) {
++                break;
++              }
++              if (v_stack_val != 3u) {
++                v_vminor_alt = 2097186u;
++              } else {
++                v_vminor_alt = 2097218u;
++              }
++              if (v_depth <= 0u) {
++                v_vminor_alt |= 4096u;
++              } else {
++                v_stack_byte = ((v_depth - 1u) / 16u);
++                v_stack_bit = (((v_depth - 1u) & 15u) * 2u);
++                if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
++                  v_vminor_alt |= 8192u;
++                } else {
++                  v_vminor_alt |= 16384u;
++                }
++              }
++              *iop_a_dst++ = wuffs_base__make_token(
++                  (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++              goto label__goto_parsed_a_leaf_value__break;
++            }
++          }
++        } while (0);
++        if (iop_a_src > io1_a_src) {
++          iop_a_src--;
++          status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
+           goto exit;
+         }
+-      } else if ((v_table_entry >> 27u) != 0u) {
+-        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
+-        goto exit;
+-      } else {
+-        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++        status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_i_o);
+         goto exit;
+       }
+-      v_length = (((v_table_entry >> 8u) & 255u) + 3u);
+-      v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
+-      if (v_table_entry_n_bits > 0u) {
+-        while (v_n_bits < v_table_entry_n_bits) {
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint32_t t_2 = *iop_a_src++;
+-            v_b2 = t_2;
+-          }
+-          v_bits |= (v_b2 << v_n_bits);
+-          v_n_bits += 8u;
++      label__goto_parsed_a_leaf_value__break:;
++      v_tagged = false;
++      while (v_depth > 0u) {
++        v_stack_byte = ((v_depth - 1u) / 16u);
++        v_stack_bit = (((v_depth - 1u) & 15u) * 2u);
++        self->private_data.f_stack[v_stack_byte] ^= (((uint32_t)(1u)) << (v_stack_bit + 1u));
++        if (1u == (3u & (self->private_data.f_stack[v_stack_byte] >> v_stack_bit))) {
++          goto label__outer__continue;
+         }
+-        v_length = (((v_length + 253u + ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 255u) + 3u);
+-        v_bits >>= v_table_entry_n_bits;
+-        v_n_bits -= v_table_entry_n_bits;
+-      }
+-      while (true) {
+-        v_table_entry = self->private_data.f_huffs[1u][(v_bits & v_dmask)];
+-        v_table_entry_n_bits = (v_table_entry & 15u);
+-        if (v_n_bits >= v_table_entry_n_bits) {
+-          v_bits >>= v_table_entry_n_bits;
+-          v_n_bits -= v_table_entry_n_bits;
+-          break;
++        if (self->private_data.f_container_num_remaining[(v_depth - 1u)] <= 0u) {
++          goto label__outer__continue;
+         }
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint32_t t_3 = *iop_a_src++;
+-          v_b3 = t_3;
+-        }
+-        v_bits |= (v_b3 << v_n_bits);
+-        v_n_bits += 8u;
+-      }
+-      if ((v_table_entry >> 28u) == 1u) {
+-        v_redir_top = ((v_table_entry >> 8u) & 65535u);
+-        v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
+-        while (true) {
+-          v_table_entry = self->private_data.f_huffs[1u][((v_redir_top + (v_bits & v_redir_mask)) & 1023u)];
+-          v_table_entry_n_bits = (v_table_entry & 15u);
+-          if (v_n_bits >= v_table_entry_n_bits) {
+-            v_bits >>= v_table_entry_n_bits;
+-            v_n_bits -= v_table_entry_n_bits;
+-            break;
+-          }
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint32_t t_4 = *iop_a_src++;
+-            v_b4 = t_4;
+-          }
+-          v_bits |= (v_b4 << v_n_bits);
+-          v_n_bits += 8u;
++        self->private_data.f_container_num_remaining[(v_depth - 1u)] -= 1u;
++        if (self->private_data.f_container_num_remaining[(v_depth - 1u)] > 0u) {
++          goto label__outer__continue;
+         }
+-      }
+-      if ((v_table_entry >> 24u) != 64u) {
+-        if ((v_table_entry >> 24u) == 8u) {
+-          status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
+-          goto exit;
++        while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
++          continue;
+         }
+-        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+-        goto exit;
+-      }
+-      v_dist_minus_1 = ((v_table_entry >> 8u) & 32767u);
+-      v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
+-      if (v_table_entry_n_bits > 0u) {
+-        while (v_n_bits < v_table_entry_n_bits) {
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint32_t t_5 = *iop_a_src++;
+-            v_b5 = t_5;
+-          }
+-          v_bits |= (v_b5 << v_n_bits);
+-          v_n_bits += 8u;
++        v_depth -= 1u;
++        v_stack_byte = (v_depth / 16u);
++        v_stack_bit = ((v_depth & 15u) * 2u);
++        if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
++          v_vminor_alt = 2097186u;
++        } else {
++          v_vminor_alt = 2097218u;
+         }
+-        v_dist_minus_1 = ((v_dist_minus_1 + ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 32767u);
+-        v_bits >>= v_table_entry_n_bits;
+-        v_n_bits -= v_table_entry_n_bits;
+-      }
+-      while (true) {
+-        if (((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
+-          v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1u))) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
+-          if (v_hdist < v_length) {
+-            v_hlen = v_hdist;
++        if (v_depth <= 0u) {
++          v_vminor_alt |= 4096u;
++        } else {
++          v_stack_byte = ((v_depth - 1u) / 16u);
++          v_stack_bit = (((v_depth - 1u) & 15u) * 2u);
++          if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
++            v_vminor_alt |= 8192u;
+           } else {
+-            v_hlen = v_length;
+-          }
+-          v_hdist += ((uint32_t)(((uint64_t)(self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0u)))));
+-          if (self->private_impl.f_history_index < v_hdist) {
+-            status = wuffs_base__make_status(wuffs_deflate__error__bad_distance);
+-            goto exit;
+-          }
+-          v_n_copied = wuffs_base__io_writer__limited_copy_u32_from_slice(
+-              &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767u), 33025));
+-          if (v_n_copied < v_hlen) {
+-            v_length -= v_n_copied;
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
+-            continue;
+-          }
+-          v_length -= v_hlen;
+-          if (v_length == 0u) {
+-            goto label__loop__continue;
++            v_vminor_alt |= 16384u;
+           }
+         }
+-        v_n_copied = wuffs_base__io_writer__limited_copy_u32_from_history(
+-            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
+-        if (v_length <= v_n_copied) {
+-          goto label__loop__continue;
+-        }
+-        v_length -= v_n_copied;
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
++        *iop_a_dst++ = wuffs_base__make_token(
++            (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++            (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+       }
++      break;
+     }
+-    self->private_impl.f_bits = v_bits;
+-    self->private_impl.f_n_bits = v_n_bits;
+-    if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
+-      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
+-      goto exit;
+-    }
++    self->private_impl.f_end_of_data = true;
+ 
+     ok:
+-    self->private_impl.p_decode_huffman_slow[0] = 0;
++    self->private_impl.p_decode_tokens = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_huffman_slow[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_decode_huffman_slow[0].v_bits = v_bits;
+-  self->private_data.s_decode_huffman_slow[0].v_n_bits = v_n_bits;
+-  self->private_data.s_decode_huffman_slow[0].v_table_entry_n_bits = v_table_entry_n_bits;
+-  self->private_data.s_decode_huffman_slow[0].v_lmask = v_lmask;
+-  self->private_data.s_decode_huffman_slow[0].v_dmask = v_dmask;
+-  self->private_data.s_decode_huffman_slow[0].v_redir_top = v_redir_top;
+-  self->private_data.s_decode_huffman_slow[0].v_redir_mask = v_redir_mask;
+-  self->private_data.s_decode_huffman_slow[0].v_length = v_length;
+-  self->private_data.s_decode_huffman_slow[0].v_dist_minus_1 = v_dist_minus_1;
++  self->private_impl.p_decode_tokens = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
++  self->private_data.s_decode_tokens.v_string_length = v_string_length;
++  self->private_data.s_decode_tokens.v_depth = v_depth;
++  self->private_data.s_decode_tokens.v_tagged = v_tagged;
++  self->private_data.s_decode_tokens.v_indefinite_string_major_type = v_indefinite_string_major_type;
+ 
+   goto exit;
+   exit:
+@@ -36408,243 +36446,607 @@ wuffs_deflate__decoder__decode_huffman_slow(
+     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+ 
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
+   return status;
+ }
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__DEFLATE)
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CBOR)
+ 
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GIF)
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC32)
+ 
+ // ---------------- Status Codes Implementations
+ 
+-const char wuffs_gif__error__bad_lzw_code[] = "#gif: bad LZW code";
+-const char wuffs_gif__error__bad_extension_label[] = "#gif: bad extension label";
+-const char wuffs_gif__error__bad_frame_size[] = "#gif: bad frame size";
+-const char wuffs_gif__error__bad_graphic_control[] = "#gif: bad graphic control";
+-const char wuffs_gif__error__bad_header[] = "#gif: bad header";
+-const char wuffs_gif__error__bad_literal_width[] = "#gif: bad literal width";
+-const char wuffs_gif__error__bad_palette[] = "#gif: bad palette";
+-const char wuffs_gif__error__truncated_input[] = "#gif: truncated input";
+-const char wuffs_gif__error__internal_error_inconsistent_i_o[] = "#gif: internal error: inconsistent I/O";
+-
+ // ---------------- Private Consts
+ 
+ static const uint32_t
+-WUFFS_GIF__INTERLACE_START[5] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  4294967295, 1, 2, 4, 0,
+-};
+-
+-static const uint8_t
+-WUFFS_GIF__INTERLACE_DELTA[5] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  1, 2, 4, 8, 8,
+-};
+-
+-static const uint8_t
+-WUFFS_GIF__INTERLACE_COUNT[5] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  0, 1, 2, 4, 8,
+-};
+-
+-static const uint8_t
+-WUFFS_GIF__ANIMEXTS1DOT0[11] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  65, 78, 73, 77, 69, 88, 84, 83,
+-  49, 46, 48,
+-};
+-
+-static const uint8_t
+-WUFFS_GIF__NETSCAPE2DOT0[11] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  78, 69, 84, 83, 67, 65, 80, 69,
+-  50, 46, 48,
+-};
+-
+-static const uint8_t
+-WUFFS_GIF__ICCRGBG1012[11] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  73, 67, 67, 82, 71, 66, 71, 49,
+-  48, 49, 50,
+-};
+-
+-static const uint8_t
+-WUFFS_GIF__XMPDATAXMP[11] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  88, 77, 80, 32, 68, 97, 116, 97,
+-  88, 77, 80,
++WUFFS_CRC32__IEEE_TABLE[16][256] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  {
++    0u, 1996959894u, 3993919788u, 2567524794u, 124634137u, 1886057615u, 3915621685u, 2657392035u,
++    249268274u, 2044508324u, 3772115230u, 2547177864u, 162941995u, 2125561021u, 3887607047u, 2428444049u,
++    498536548u, 1789927666u, 4089016648u, 2227061214u, 450548861u, 1843258603u, 4107580753u, 2211677639u,
++    325883990u, 1684777152u, 4251122042u, 2321926636u, 335633487u, 1661365465u, 4195302755u, 2366115317u,
++    997073096u, 1281953886u, 3579855332u, 2724688242u, 1006888145u, 1258607687u, 3524101629u, 2768942443u,
++    901097722u, 1119000684u, 3686517206u, 2898065728u, 853044451u, 1172266101u, 3705015759u, 2882616665u,
++    651767980u, 1373503546u, 3369554304u, 3218104598u, 565507253u, 1454621731u, 3485111705u, 3099436303u,
++    671266974u, 1594198024u, 3322730930u, 2970347812u, 795835527u, 1483230225u, 3244367275u, 3060149565u,
++    1994146192u, 31158534u, 2563907772u, 4023717930u, 1907459465u, 112637215u, 2680153253u, 3904427059u,
++    2013776290u, 251722036u, 2517215374u, 3775830040u, 2137656763u, 141376813u, 2439277719u, 3865271297u,
++    1802195444u, 476864866u, 2238001368u, 4066508878u, 1812370925u, 453092731u, 2181625025u, 4111451223u,
++    1706088902u, 314042704u, 2344532202u, 4240017532u, 1658658271u, 366619977u, 2362670323u, 4224994405u,
++    1303535960u, 984961486u, 2747007092u, 3569037538u, 1256170817u, 1037604311u, 2765210733u, 3554079995u,
++    1131014506u, 879679996u, 2909243462u, 3663771856u, 1141124467u, 855842277u, 2852801631u, 3708648649u,
++    1342533948u, 654459306u, 3188396048u, 3373015174u, 1466479909u, 544179635u, 3110523913u, 3462522015u,
++    1591671054u, 702138776u, 2966460450u, 3352799412u, 1504918807u, 783551873u, 3082640443u, 3233442989u,
++    3988292384u, 2596254646u, 62317068u, 1957810842u, 3939845945u, 2647816111u, 81470997u, 1943803523u,
++    3814918930u, 2489596804u, 225274430u, 2053790376u, 3826175755u, 2466906013u, 167816743u, 2097651377u,
++    4027552580u, 2265490386u, 503444072u, 1762050814u, 4150417245u, 2154129355u, 426522225u, 1852507879u,
++    4275313526u, 2312317920u, 282753626u, 1742555852u, 4189708143u, 2394877945u, 397917763u, 1622183637u,
++    3604390888u, 2714866558u, 953729732u, 1340076626u, 3518719985u, 2797360999u, 1068828381u, 1219638859u,
++    3624741850u, 2936675148u, 906185462u, 1090812512u, 3747672003u, 2825379669u, 829329135u, 1181335161u,
++    3412177804u, 3160834842u, 628085408u, 1382605366u, 3423369109u, 3138078467u, 570562233u, 1426400815u,
++    3317316542u, 2998733608u, 733239954u, 1555261956u, 3268935591u, 3050360625u, 752459403u, 1541320221u,
++    2607071920u, 3965973030u, 1969922972u, 40735498u, 2617837225u, 3943577151u, 1913087877u, 83908371u,
++    2512341634u, 3803740692u, 2075208622u, 213261112u, 2463272603u, 3855990285u, 2094854071u, 198958881u,
++    2262029012u, 4057260610u, 1759359992u, 534414190u, 2176718541u, 4139329115u, 1873836001u, 414664567u,
++    2282248934u, 4279200368u, 1711684554u, 285281116u, 2405801727u, 4167216745u, 1634467795u, 376229701u,
++    2685067896u, 3608007406u, 1308918612u, 956543938u, 2808555105u, 3495958263u, 1231636301u, 1047427035u,
++    2932959818u, 3654703836u, 1088359270u, 936918000u, 2847714899u, 3736837829u, 1202900863u, 817233897u,
++    3183342108u, 3401237130u, 1404277552u, 615818150u, 3134207493u, 3453421203u, 1423857449u, 601450431u,
++    3009837614u, 3294710456u, 1567103746u, 711928724u, 3020668471u, 3272380065u, 1510334235u, 755167117u,
++  }, {
++    0u, 421212481u, 842424962u, 724390851u, 1684849924u, 2105013317u, 1448781702u, 1329698503u,
++    3369699848u, 3519200073u, 4210026634u, 3824474571u, 2897563404u, 3048111693u, 2659397006u, 2274893007u,
++    1254232657u, 1406739216u, 2029285587u, 1643069842u, 783210325u, 934667796u, 479770071u, 92505238u,
++    2182846553u, 2600511768u, 2955803355u, 2838940570u, 3866582365u, 4285295644u, 3561045983u, 3445231262u,
++    2508465314u, 2359236067u, 2813478432u, 3198777185u, 4058571174u, 3908292839u, 3286139684u, 3670389349u,
++    1566420650u, 1145479147u, 1869335592u, 1987116393u, 959540142u, 539646703u, 185010476u, 303839341u,
++    3745920755u, 3327985586u, 3983561841u, 4100678960u, 3140154359u, 2721170102u, 2300350837u, 2416418868u,
++    396344571u, 243568058u, 631889529u, 1018359608u, 1945336319u, 1793607870u, 1103436669u, 1490954812u,
++    4034481925u, 3915546180u, 3259968903u, 3679722694u, 2484439553u, 2366552896u, 2787371139u, 3208174018u,
++    950060301u, 565965900u, 177645455u, 328046286u, 1556873225u, 1171730760u, 1861902987u, 2011255754u,
++    3132841300u, 2745199637u, 2290958294u, 2442530455u, 3738671184u, 3352078609u, 3974232786u, 4126854035u,
++    1919080284u, 1803150877u, 1079293406u, 1498383519u, 370020952u, 253043481u, 607678682u, 1025720731u,
++    1711106983u, 2095471334u, 1472923941u, 1322268772u, 26324643u, 411738082u, 866634785u, 717028704u,
++    2904875439u, 3024081134u, 2668790573u, 2248782444u, 3376948395u, 3495106026u, 4219356713u, 3798300520u,
++    792689142u, 908347575u, 487136116u, 68299317u, 1263779058u, 1380486579u, 2036719216u, 1618931505u,
++    3890672638u, 4278043327u, 3587215740u, 3435896893u, 2206873338u, 2593195963u, 2981909624u, 2829542713u,
++    998479947u, 580430090u, 162921161u, 279890824u, 1609522511u, 1190423566u, 1842954189u, 1958874764u,
++    4082766403u, 3930137346u, 3245109441u, 3631694208u, 2536953671u, 2385372678u, 2768287173u, 3155920004u,
++    1900120602u, 1750776667u, 1131931800u, 1517083097u, 355290910u, 204897887u, 656092572u, 1040194781u,
++    3113746450u, 2692952403u, 2343461520u, 2461357009u, 3723805974u, 3304059991u, 4022511508u, 4141455061u,
++    2919742697u, 3072101800u, 2620513899u, 2234183466u, 3396041197u, 3547351212u, 4166851439u, 3779471918u,
++    1725839073u, 2143618976u, 1424512099u, 1307796770u, 45282277u, 464110244u, 813994343u, 698327078u,
++    3838160568u, 4259225593u, 3606301754u, 3488152955u, 2158586812u, 2578602749u, 2996767038u, 2877569151u,
++    740041904u, 889656817u, 506086962u, 120682355u, 1215357364u, 1366020341u, 2051441462u, 1667084919u,
++    3422213966u, 3538019855u, 4190942668u, 3772220557u, 2945847882u, 3062702859u, 2644537544u, 2226864521u,
++    52649286u, 439905287u, 823476164u, 672009861u, 1733269570u, 2119477507u, 1434057408u, 1281543041u,
++    2167981343u, 2552493150u, 3004082077u, 2853541596u, 3847487515u, 4233048410u, 3613549209u, 3464057816u,
++    1239502615u, 1358593622u, 2077699477u, 1657543892u, 764250643u, 882293586u, 532408465u, 111204816u,
++    1585378284u, 1197851309u, 1816695150u, 1968414767u, 974272232u, 587794345u, 136598634u, 289367339u,
++    2527558116u, 2411481253u, 2760973158u, 3179948583u, 4073438432u, 3956313505u, 3237863010u, 3655790371u,
++    347922877u, 229101820u, 646611775u, 1066513022u, 1892689081u, 1774917112u, 1122387515u, 1543337850u,
++    3697634229u, 3313392372u, 3998419255u, 4148705398u, 3087642289u, 2702352368u, 2319436851u, 2468674930u,
++  }, {
++    0u, 29518391u, 59036782u, 38190681u, 118073564u, 114017003u, 76381362u, 89069189u,
++    236147128u, 265370511u, 228034006u, 206958561u, 152762724u, 148411219u, 178138378u, 190596925u,
++    472294256u, 501532999u, 530741022u, 509615401u, 456068012u, 451764635u, 413917122u, 426358261u,
++    305525448u, 334993663u, 296822438u, 275991697u, 356276756u, 352202787u, 381193850u, 393929805u,
++    944588512u, 965684439u, 1003065998u, 973863097u, 1061482044u, 1049003019u, 1019230802u, 1023561829u,
++    912136024u, 933002607u, 903529270u, 874031361u, 827834244u, 815125939u, 852716522u, 856752605u,
++    611050896u, 631869351u, 669987326u, 640506825u, 593644876u, 580921211u, 551983394u, 556069653u,
++    712553512u, 733666847u, 704405574u, 675154545u, 762387700u, 749958851u, 787859610u, 792175277u,
++    1889177024u, 1901651959u, 1931368878u, 1927033753u, 2006131996u, 1985040171u, 1947726194u, 1976933189u,
++    2122964088u, 2135668303u, 2098006038u, 2093965857u, 2038461604u, 2017599123u, 2047123658u, 2076625661u,
++    1824272048u, 1836991623u, 1866005214u, 1861914857u, 1807058540u, 1786244187u, 1748062722u, 1777547317u,
++    1655668488u, 1668093247u, 1630251878u, 1625932113u, 1705433044u, 1684323811u, 1713505210u, 1742760333u,
++    1222101792u, 1226154263u, 1263738702u, 1251046777u, 1339974652u, 1310460363u, 1281013650u, 1301863845u,
++    1187289752u, 1191637167u, 1161842422u, 1149379777u, 1103966788u, 1074747507u, 1112139306u, 1133218845u,
++    1425107024u, 1429406311u, 1467333694u, 1454888457u, 1408811148u, 1379576507u, 1350309090u, 1371438805u,
++    1524775400u, 1528845279u, 1499917702u, 1487177649u, 1575719220u, 1546255107u, 1584350554u, 1605185389u,
++    3778354048u, 3774312887u, 3803303918u, 3816007129u, 3862737756u, 3892238699u, 3854067506u, 3833203973u,
++    4012263992u, 4007927823u, 3970080342u, 3982554209u, 3895452388u, 3924658387u, 3953866378u, 3932773565u,
++    4245928176u, 4241609415u, 4271336606u, 4283762345u, 4196012076u, 4225268251u, 4187931714u, 4166823541u,
++    4076923208u, 4072833919u, 4035198246u, 4047918865u, 4094247316u, 4123732899u, 4153251322u, 4132437965u,
++    3648544096u, 3636082519u, 3673983246u, 3678331705u, 3732010428u, 3753090955u, 3723829714u, 3694611429u,
++    3614117080u, 3601426159u, 3572488374u, 3576541825u, 3496125444u, 3516976691u, 3555094634u, 3525581405u,
++    3311336976u, 3298595879u, 3336186494u, 3340255305u, 3260503756u, 3281337595u, 3251864226u, 3222399125u,
++    3410866088u, 3398419871u, 3368647622u, 3372945905u, 3427010420u, 3448139075u, 3485520666u, 3456284973u,
++    2444203584u, 2423127159u, 2452308526u, 2481530905u, 2527477404u, 2539934891u, 2502093554u, 2497740997u,
++    2679949304u, 2659102159u, 2620920726u, 2650438049u, 2562027300u, 2574714131u, 2603727690u, 2599670141u,
++    2374579504u, 2353749767u, 2383274334u, 2412743529u, 2323684844u, 2336421851u, 2298759554u, 2294686645u,
++    2207933576u, 2186809023u, 2149495014u, 2178734801u, 2224278612u, 2236720739u, 2266437690u, 2262135309u,
++    2850214048u, 2820717207u, 2858812622u, 2879680249u, 2934667388u, 2938704459u, 2909776914u, 2897069605u,
++    2817622296u, 2788420399u, 2759153014u, 2780249921u, 2700618180u, 2704950259u, 2742877610u, 2730399645u,
++    3049550800u, 3020298727u, 3057690558u, 3078802825u, 2999835404u, 3004150075u, 2974355298u, 2961925461u,
++    3151438440u, 3121956959u, 3092510214u, 3113327665u, 3168701108u, 3172786307u, 3210370778u, 3197646061u,
++  }, {
++    0u, 3099354981u, 2852767883u, 313896942u, 2405603159u, 937357362u, 627793884u, 2648127673u,
++    3316918511u, 2097696650u, 1874714724u, 3607201537u, 1255587768u, 4067088605u, 3772741427u, 1482887254u,
++    1343838111u, 3903140090u, 4195393300u, 1118632049u, 3749429448u, 1741137837u, 1970407491u, 3452858150u,
++    2511175536u, 756094997u, 1067759611u, 2266550430u, 449832999u, 2725482306u, 2965774508u, 142231497u,
++    2687676222u, 412010587u, 171665333u, 2995192016u, 793786473u, 2548850444u, 2237264098u, 1038456711u,
++    1703315409u, 3711623348u, 3482275674u, 1999841343u, 3940814982u, 1381529571u, 1089329165u, 4166106984u,
++    4029413537u, 1217896388u, 1512189994u, 3802027855u, 2135519222u, 3354724499u, 3577784189u, 1845280792u,
++    899665998u, 2367928107u, 2677414085u, 657096608u, 3137160985u, 37822588u, 284462994u, 2823350519u,
++    2601801789u, 598228824u, 824021174u, 2309093331u, 343330666u, 2898962447u, 3195996129u, 113467524u,
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++  }, {
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++  }, {
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++    2270357136u, 1051278712u, 802445057u, 2519698665u, 221152243u, 3033880603u, 2779263586u, 475261322u,
++  }, {
++    0u, 2926088593u, 2275419491u, 701019378u, 3560000647u, 2052709654u, 1402038756u, 4261017717u,
++    1930665807u, 3715829470u, 4105419308u, 1524313021u, 2804077512u, 155861593u, 545453739u, 2397726522u,
++    3861331614u, 1213181711u, 1636244477u, 3488582252u, 840331801u, 2625561480u, 3048626042u, 467584747u,
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++    390036349u, 3109546732u, 2426363422u, 1056427919u, 3272488954u, 1835443819u, 1152258713u, 3938878216u,
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++    3134903146u, 347226875u, 1031468553u, 2467456920u, 1860935661u, 3229814396u, 3914054286u, 1193487135u,
++    3385412645u, 1738661300u, 1315531078u, 3758225623u, 502792354u, 3012596019u, 2589468097u, 875607120u,
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++    3740677976u, 1889445577u, 1498812987u, 4148069290u, 180845535u, 2762992206u, 2372361916u, 588238637u,
++    1921194766u, 3706423967u, 4112727661u, 1531686908u, 2796705673u, 148555288u, 554857194u, 2407195515u,
++    26248257u, 2952271312u, 2251333922u, 676868275u, 3584149702u, 2076793175u, 1375858085u, 4234771508u,
++    2493785488u, 986493953u, 319029491u, 3178008930u, 1083533591u, 4009621638u, 3342158964u, 1767759333u,
++    3887577823u, 1239362382u, 1612160956u, 3464433197u, 864482904u, 2649647049u, 3022443323u, 441336490u,
++    1706844275u, 3419730402u, 3793503504u, 1282724993u, 2978819316u, 535149925u, 908921239u, 2554697734u,
++    380632892u, 3100077741u, 2433735263u, 1063734222u, 3265180603u, 1828069930u, 1161729752u, 3948283721u,
++    2207997677u, 770953084u, 71007118u, 2857626143u, 1470763626u, 4190274555u, 3490330377u, 2120394392u,
++    4035494306u, 1591758899u, 1999168705u, 3644880208u, 616140069u, 2328960180u, 2736367686u, 225524183u,
++  },
+ };
+ 
+-#define WUFFS_GIF__QUIRKS_BASE 1041635328
+-
+-#define WUFFS_GIF__QUIRKS_COUNT 7
+-
+ // ---------------- Private Initializer Prototypes
+ 
+ // ---------------- Private Function Prototypes
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_gif__decoder__do_decode_image_config(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__image_config* a_dst,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_gif__decoder__do_tell_me_more(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__more_information* a_minfo,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_gif__decoder__do_decode_frame_config(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__frame_config* a_dst,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_gif__decoder__skip_frame(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_gif__decoder__do_decode_frame(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts);
+-
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__empty_struct
+-wuffs_gif__decoder__reset_gc(
+-    wuffs_gif__decoder* self);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_gif__decoder__decode_up_to_id_part1(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_gif__decoder__decode_header(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_gif__decoder__decode_lsd(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_gif__decoder__decode_extension(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_gif__decoder__skip_blocks(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_gif__decoder__decode_ae(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_gif__decoder__decode_gc(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_gif__decoder__decode_id_part0(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_gif__decoder__decode_id_part1(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_gif__decoder__decode_id_part2(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__slice_u8 a_workbuf);
++wuffs_crc32__ieee_hasher__up(
++    wuffs_crc32__ieee_hasher* self,
++    wuffs_base__slice_u8 a_x);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_gif__decoder__copy_to_image_buffer(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__pixel_buffer* a_pb,
+-    wuffs_base__slice_u8 a_src);
++static wuffs_base__empty_struct
++wuffs_crc32__ieee_hasher__up__choosy_default(
++    wuffs_crc32__ieee_hasher* self,
++    wuffs_base__slice_u8 a_x);
+ 
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_CRC32)
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__empty_struct
+-wuffs_gif__decoder__lzw_init(
+-    wuffs_gif__decoder* self);
++wuffs_crc32__ieee_hasher__up_arm_crc32(
++    wuffs_crc32__ieee_hasher* self,
++    wuffs_base__slice_u8 a_x);
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_CRC32)
+ 
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__empty_struct
+-wuffs_gif__decoder__lzw_read_from(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__io_buffer* a_src);
++wuffs_crc32__ieee_hasher__up_x86_sse42(
++    wuffs_crc32__ieee_hasher* self,
++    wuffs_base__slice_u8 a_x);
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
+ 
+ // ---------------- VTables
+ 
+-const wuffs_base__image_decoder__func_ptrs
+-wuffs_gif__decoder__func_ptrs_for__wuffs_base__image_decoder = {
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__pixel_buffer*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__pixel_blend,
+-      wuffs_base__slice_u8,
+-      wuffs_base__decode_frame_options*))(&wuffs_gif__decoder__decode_frame),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__frame_config*,
+-      wuffs_base__io_buffer*))(&wuffs_gif__decoder__decode_frame_config),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__image_config*,
+-      wuffs_base__io_buffer*))(&wuffs_gif__decoder__decode_image_config),
+-  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_gif__decoder__frame_dirty_rect),
++const wuffs_base__hasher_u32__func_ptrs
++wuffs_crc32__ieee_hasher__func_ptrs_for__wuffs_base__hasher_u32 = {
++  (uint32_t(*)(const void*))(&wuffs_crc32__ieee_hasher__checksum_u32),
+   (uint64_t(*)(const void*,
+-      uint32_t))(&wuffs_gif__decoder__get_quirk),
+-  (uint64_t(*)(const void*))(&wuffs_gif__decoder__history_retain_length),
+-  (uint32_t(*)(const void*))(&wuffs_gif__decoder__num_animation_loops),
+-  (uint64_t(*)(const void*))(&wuffs_gif__decoder__num_decoded_frame_configs),
+-  (uint64_t(*)(const void*))(&wuffs_gif__decoder__num_decoded_frames),
+-  (wuffs_base__status(*)(void*,
+-      uint64_t,
+-      uint64_t))(&wuffs_gif__decoder__restart_frame),
++      uint32_t))(&wuffs_crc32__ieee_hasher__get_quirk),
+   (wuffs_base__status(*)(void*,
+       uint32_t,
+-      uint64_t))(&wuffs_gif__decoder__set_quirk),
++      uint64_t))(&wuffs_crc32__ieee_hasher__set_quirk),
+   (wuffs_base__empty_struct(*)(void*,
+-      uint32_t,
+-      bool))(&wuffs_gif__decoder__set_report_metadata),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__more_information*,
+-      wuffs_base__io_buffer*))(&wuffs_gif__decoder__tell_me_more),
+-  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_gif__decoder__workbuf_len),
++      wuffs_base__slice_u8))(&wuffs_crc32__ieee_hasher__update),
++  (uint32_t(*)(void*,
++      wuffs_base__slice_u8))(&wuffs_crc32__ieee_hasher__update_u32),
+ };
+ 
+ // ---------------- Initializer Implementations
+ 
+ wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_gif__decoder__initialize(
+-    wuffs_gif__decoder* self,
++wuffs_crc32__ieee_hasher__initialize(
++    wuffs_crc32__ieee_hasher* self,
+     size_t sizeof_star_self,
+     uint64_t wuffs_version,
+     uint32_t options){
+@@ -36681,23 +37083,25 @@ wuffs_gif__decoder__initialize(
+     }
+   }
+ 
++  self->private_impl.choosy_up = &wuffs_crc32__ieee_hasher__up__choosy_default;
++
+   self->private_impl.magic = WUFFS_BASE__MAGIC;
+-  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
+-      wuffs_base__image_decoder__vtable_name;
+-  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
+-      (const void*)(&wuffs_gif__decoder__func_ptrs_for__wuffs_base__image_decoder);
++  self->private_impl.vtable_for__wuffs_base__hasher_u32.vtable_name =
++      wuffs_base__hasher_u32__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__hasher_u32.function_pointers =
++      (const void*)(&wuffs_crc32__ieee_hasher__func_ptrs_for__wuffs_base__hasher_u32);
+   return wuffs_base__make_status(NULL);
+ }
+ 
+-wuffs_gif__decoder*
+-wuffs_gif__decoder__alloc(void) {
+-  wuffs_gif__decoder* x =
+-      (wuffs_gif__decoder*)(calloc(sizeof(wuffs_gif__decoder), 1));
++wuffs_crc32__ieee_hasher*
++wuffs_crc32__ieee_hasher__alloc(void) {
++  wuffs_crc32__ieee_hasher* x =
++      (wuffs_crc32__ieee_hasher*)(calloc(1, sizeof(wuffs_crc32__ieee_hasher)));
+   if (!x) {
+     return NULL;
+   }
+-  if (wuffs_gif__decoder__initialize(
+-      x, sizeof(wuffs_gif__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++  if (wuffs_crc32__ieee_hasher__initialize(
++      x, sizeof(wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
+     free(x);
+     return NULL;
+   }
+@@ -36705,18 +37109,18 @@ wuffs_gif__decoder__alloc(void) {
+ }
+ 
+ size_t
+-sizeof__wuffs_gif__decoder(void) {
+-  return sizeof(wuffs_gif__decoder);
++sizeof__wuffs_crc32__ieee_hasher(void) {
++  return sizeof(wuffs_crc32__ieee_hasher);
+ }
+ 
+ // ---------------- Function Implementations
+ 
+-// -------- func gif.decoder.get_quirk
++// -------- func crc32.ieee_hasher.get_quirk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_gif__decoder__get_quirk(
+-    const wuffs_gif__decoder* self,
++wuffs_crc32__ieee_hasher__get_quirk(
++    const wuffs_crc32__ieee_hasher* self,
+     uint32_t a_key) {
+   if (!self) {
+     return 0;
+@@ -36726,25 +37130,15 @@ wuffs_gif__decoder__get_quirk(
+     return 0;
+   }
+ 
+-  uint32_t v_key = 0;
+-
+-  if (a_key >= 1041635328u) {
+-    v_key = (a_key - 1041635328u);
+-    if (v_key < 7u) {
+-      if (self->private_impl.f_quirks[v_key]) {
+-        return 1u;
+-      }
+-    }
+-  }
+   return 0u;
+ }
+ 
+-// -------- func gif.decoder.set_quirk
++// -------- func crc32.ieee_hasher.set_quirk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_gif__decoder__set_quirk(
+-    wuffs_gif__decoder* self,
++wuffs_crc32__ieee_hasher__set_quirk(
++    wuffs_crc32__ieee_hasher* self,
+     uint32_t a_key,
+     uint64_t a_value) {
+   if (!self) {
+@@ -36757,377 +37151,812 @@ wuffs_gif__decoder__set_quirk(
+         : wuffs_base__error__initialize_not_called);
+   }
+ 
+-  if ((self->private_impl.f_call_sequence == 0u) && (a_key >= 1041635328u)) {
+-    a_key -= 1041635328u;
+-    if (a_key < 7u) {
+-      self->private_impl.f_quirks[a_key] = (a_value > 0u);
+-      return wuffs_base__make_status(NULL);
+-    }
+-  }
+   return wuffs_base__make_status(wuffs_base__error__unsupported_option);
+ }
+ 
+-// -------- func gif.decoder.decode_image_config
++// -------- func crc32.ieee_hasher.update
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_gif__decoder__decode_image_config(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__image_config* a_dst,
+-    wuffs_base__io_buffer* a_src) {
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_crc32__ieee_hasher__update(
++    wuffs_crc32__ieee_hasher* self,
++    wuffs_base__slice_u8 a_x) {
+   if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++    return wuffs_base__make_empty_struct();
+   }
+   if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-  if (!a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 1)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++    return wuffs_base__make_empty_struct();
+   }
+-  self->private_impl.active_coroutine = 0;
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-
+-  uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    while (true) {
+-      {
+-        wuffs_base__status t_0 = wuffs_gif__decoder__do_decode_image_config(self, a_dst, a_src);
+-        v_status = t_0;
+-      }
+-      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_gif__error__truncated_input);
+-        goto exit;
+-      }
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+-    }
+ 
+-    ok:
+-    self->private_impl.p_decode_image_config[0] = 0;
+-    goto exit;
++  if (self->private_impl.f_state == 0u) {
++    self->private_impl.choosy_up = (
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_CRC32)
++        wuffs_base__cpu_arch__have_arm_crc32() ? &wuffs_crc32__ieee_hasher__up_arm_crc32 :
++#endif
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_crc32__ieee_hasher__up_x86_sse42 :
++#endif
++        self->private_impl.choosy_up);
+   }
++  wuffs_crc32__ieee_hasher__up(self, a_x);
++  return wuffs_base__make_empty_struct();
++}
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
++// -------- func crc32.ieee_hasher.update_u32
+ 
+-  goto exit;
+-  exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_crc32__ieee_hasher__update_u32(
++    wuffs_crc32__ieee_hasher* self,
++    wuffs_base__slice_u8 a_x) {
++  if (!self) {
++    return 0;
+   }
+-  return status;
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return 0;
++  }
++
++  wuffs_crc32__ieee_hasher__update(self, a_x);
++  return self->private_impl.f_state;
+ }
+ 
+-// -------- func gif.decoder.do_decode_image_config
++// -------- func crc32.ieee_hasher.up
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_gif__decoder__do_decode_image_config(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__image_config* a_dst,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  bool v_ffio = false;
++static wuffs_base__empty_struct
++wuffs_crc32__ieee_hasher__up(
++    wuffs_crc32__ieee_hasher* self,
++    wuffs_base__slice_u8 a_x) {
++  return (*self->private_impl.choosy_up)(self, a_x);
++}
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_crc32__ieee_hasher__up__choosy_default(
++    wuffs_crc32__ieee_hasher* self,
++    wuffs_base__slice_u8 a_x) {
++  uint32_t v_s = 0;
++  wuffs_base__slice_u8 v_p = {0};
+ 
+-    if (self->private_impl.f_call_sequence != 0u) {
+-      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
+-      goto exit;
+-    } else if ( ! self->private_impl.f_seen_header) {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      status = wuffs_gif__decoder__decode_header(self, a_src);
+-      if (status.repr) {
+-        goto suspend;
+-      }
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-      status = wuffs_gif__decoder__decode_lsd(self, a_src);
+-      if (status.repr) {
+-        goto suspend;
+-      }
+-      self->private_impl.f_seen_header = true;
+-    }
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-    status = wuffs_gif__decoder__decode_up_to_id_part1(self, a_src);
+-    if (status.repr) {
+-      goto suspend;
+-    }
+-    v_ffio =  ! self->private_impl.f_gc_has_transparent_index;
+-    if ( ! self->private_impl.f_quirks[2u]) {
+-      v_ffio = (v_ffio &&
+-          (self->private_impl.f_frame_rect_x0 == 0u) &&
+-          (self->private_impl.f_frame_rect_y0 == 0u) &&
+-          (self->private_impl.f_frame_rect_x1 == self->private_impl.f_width) &&
+-          (self->private_impl.f_frame_rect_y1 == self->private_impl.f_height));
+-    } else if (v_ffio) {
+-      self->private_impl.f_black_color_u32_argb_premul = 4278190080u;
+-    }
+-    if (self->private_impl.f_background_color_u32_argb_premul == 77u) {
+-      self->private_impl.f_background_color_u32_argb_premul = self->private_impl.f_black_color_u32_argb_premul;
++  v_s = (4294967295u ^ self->private_impl.f_state);
++  {
++    wuffs_base__slice_u8 i_slice_p = a_x;
++    v_p.ptr = i_slice_p.ptr;
++    v_p.len = 16;
++    const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32));
++    while (v_p.ptr < i_end0_p) {
++      v_s ^= ((((uint32_t)(v_p.ptr[0u])) << 0u) |
++          (((uint32_t)(v_p.ptr[1u])) << 8u) |
++          (((uint32_t)(v_p.ptr[2u])) << 16u) |
++          (((uint32_t)(v_p.ptr[3u])) << 24u));
++      v_s = (WUFFS_CRC32__IEEE_TABLE[0u][v_p.ptr[15u]] ^
++          WUFFS_CRC32__IEEE_TABLE[1u][v_p.ptr[14u]] ^
++          WUFFS_CRC32__IEEE_TABLE[2u][v_p.ptr[13u]] ^
++          WUFFS_CRC32__IEEE_TABLE[3u][v_p.ptr[12u]] ^
++          WUFFS_CRC32__IEEE_TABLE[4u][v_p.ptr[11u]] ^
++          WUFFS_CRC32__IEEE_TABLE[5u][v_p.ptr[10u]] ^
++          WUFFS_CRC32__IEEE_TABLE[6u][v_p.ptr[9u]] ^
++          WUFFS_CRC32__IEEE_TABLE[7u][v_p.ptr[8u]] ^
++          WUFFS_CRC32__IEEE_TABLE[8u][v_p.ptr[7u]] ^
++          WUFFS_CRC32__IEEE_TABLE[9u][v_p.ptr[6u]] ^
++          WUFFS_CRC32__IEEE_TABLE[10u][v_p.ptr[5u]] ^
++          WUFFS_CRC32__IEEE_TABLE[11u][v_p.ptr[4u]] ^
++          WUFFS_CRC32__IEEE_TABLE[12u][(255u & (v_s >> 24u))] ^
++          WUFFS_CRC32__IEEE_TABLE[13u][(255u & (v_s >> 16u))] ^
++          WUFFS_CRC32__IEEE_TABLE[14u][(255u & (v_s >> 8u))] ^
++          WUFFS_CRC32__IEEE_TABLE[15u][(255u & (v_s >> 0u))]);
++      v_p.ptr += 16;
++      v_s ^= ((((uint32_t)(v_p.ptr[0u])) << 0u) |
++          (((uint32_t)(v_p.ptr[1u])) << 8u) |
++          (((uint32_t)(v_p.ptr[2u])) << 16u) |
++          (((uint32_t)(v_p.ptr[3u])) << 24u));
++      v_s = (WUFFS_CRC32__IEEE_TABLE[0u][v_p.ptr[15u]] ^
++          WUFFS_CRC32__IEEE_TABLE[1u][v_p.ptr[14u]] ^
++          WUFFS_CRC32__IEEE_TABLE[2u][v_p.ptr[13u]] ^
++          WUFFS_CRC32__IEEE_TABLE[3u][v_p.ptr[12u]] ^
++          WUFFS_CRC32__IEEE_TABLE[4u][v_p.ptr[11u]] ^
++          WUFFS_CRC32__IEEE_TABLE[5u][v_p.ptr[10u]] ^
++          WUFFS_CRC32__IEEE_TABLE[6u][v_p.ptr[9u]] ^
++          WUFFS_CRC32__IEEE_TABLE[7u][v_p.ptr[8u]] ^
++          WUFFS_CRC32__IEEE_TABLE[8u][v_p.ptr[7u]] ^
++          WUFFS_CRC32__IEEE_TABLE[9u][v_p.ptr[6u]] ^
++          WUFFS_CRC32__IEEE_TABLE[10u][v_p.ptr[5u]] ^
++          WUFFS_CRC32__IEEE_TABLE[11u][v_p.ptr[4u]] ^
++          WUFFS_CRC32__IEEE_TABLE[12u][(255u & (v_s >> 24u))] ^
++          WUFFS_CRC32__IEEE_TABLE[13u][(255u & (v_s >> 16u))] ^
++          WUFFS_CRC32__IEEE_TABLE[14u][(255u & (v_s >> 8u))] ^
++          WUFFS_CRC32__IEEE_TABLE[15u][(255u & (v_s >> 0u))]);
++      v_p.ptr += 16;
+     }
+-    if (a_dst != NULL) {
+-      wuffs_base__image_config__set(
+-          a_dst,
+-          2198077448u,
+-          0u,
+-          self->private_impl.f_width,
+-          self->private_impl.f_height,
+-          self->private_impl.f_frame_config_io_position,
+-          v_ffio);
++    v_p.len = 16;
++    const uint8_t* i_end1_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 16) * 16));
++    while (v_p.ptr < i_end1_p) {
++      v_s ^= ((((uint32_t)(v_p.ptr[0u])) << 0u) |
++          (((uint32_t)(v_p.ptr[1u])) << 8u) |
++          (((uint32_t)(v_p.ptr[2u])) << 16u) |
++          (((uint32_t)(v_p.ptr[3u])) << 24u));
++      v_s = (WUFFS_CRC32__IEEE_TABLE[0u][v_p.ptr[15u]] ^
++          WUFFS_CRC32__IEEE_TABLE[1u][v_p.ptr[14u]] ^
++          WUFFS_CRC32__IEEE_TABLE[2u][v_p.ptr[13u]] ^
++          WUFFS_CRC32__IEEE_TABLE[3u][v_p.ptr[12u]] ^
++          WUFFS_CRC32__IEEE_TABLE[4u][v_p.ptr[11u]] ^
++          WUFFS_CRC32__IEEE_TABLE[5u][v_p.ptr[10u]] ^
++          WUFFS_CRC32__IEEE_TABLE[6u][v_p.ptr[9u]] ^
++          WUFFS_CRC32__IEEE_TABLE[7u][v_p.ptr[8u]] ^
++          WUFFS_CRC32__IEEE_TABLE[8u][v_p.ptr[7u]] ^
++          WUFFS_CRC32__IEEE_TABLE[9u][v_p.ptr[6u]] ^
++          WUFFS_CRC32__IEEE_TABLE[10u][v_p.ptr[5u]] ^
++          WUFFS_CRC32__IEEE_TABLE[11u][v_p.ptr[4u]] ^
++          WUFFS_CRC32__IEEE_TABLE[12u][(255u & (v_s >> 24u))] ^
++          WUFFS_CRC32__IEEE_TABLE[13u][(255u & (v_s >> 16u))] ^
++          WUFFS_CRC32__IEEE_TABLE[14u][(255u & (v_s >> 8u))] ^
++          WUFFS_CRC32__IEEE_TABLE[15u][(255u & (v_s >> 0u))]);
++      v_p.ptr += 16;
+     }
+-    if (self->private_impl.f_call_sequence == 0u) {
+-      self->private_impl.f_call_sequence = 32u;
++    v_p.len = 1;
++    const uint8_t* i_end2_p = wuffs_private_impl__ptr_u8_plus_len(i_slice_p.ptr, i_slice_p.len);
++    while (v_p.ptr < i_end2_p) {
++      v_s = (WUFFS_CRC32__IEEE_TABLE[0u][((uint8_t)(((uint8_t)(v_s)) ^ v_p.ptr[0u]))] ^ (v_s >> 8u));
++      v_p.ptr += 1;
+     }
+-
+-    goto ok;
+-    ok:
+-    self->private_impl.p_do_decode_image_config[0] = 0;
+-    goto exit;
++    v_p.len = 0;
+   }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-
+-  goto exit;
+-  exit:
+-  return status;
++  self->private_impl.f_state = (4294967295u ^ v_s);
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-// -------- func gif.decoder.set_report_metadata
++// -------- func crc32.ieee_hasher.checksum_u32
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_gif__decoder__set_report_metadata(
+-    wuffs_gif__decoder* self,
+-    uint32_t a_fourcc,
+-    bool a_report) {
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_crc32__ieee_hasher__checksum_u32(
++    const wuffs_crc32__ieee_hasher* self) {
+   if (!self) {
+-    return wuffs_base__make_empty_struct();
++    return 0;
+   }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_empty_struct();
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
+   }
+ 
+-  if (a_fourcc == 1229144912u) {
+-    self->private_impl.f_report_metadata_iccp = a_report;
+-  } else if (a_fourcc == 1481461792u) {
+-    self->private_impl.f_report_metadata_xmp = a_report;
++  return self->private_impl.f_state;
++}
++
++// ‼ WUFFS MULTI-FILE SECTION +arm_crc32
++// -------- func crc32.ieee_hasher.up_arm_crc32
++
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_CRC32)
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_crc32__ieee_hasher__up_arm_crc32(
++    wuffs_crc32__ieee_hasher* self,
++    wuffs_base__slice_u8 a_x) {
++  wuffs_base__slice_u8 v_p = {0};
++  uint32_t v_s = 0;
++
++  v_s = (4294967295u ^ self->private_impl.f_state);
++  while ((((uint64_t)(a_x.len)) > 0u) && ((15u & ((uint32_t)(0xFFFu & (uintptr_t)(a_x.ptr)))) != 0u)) {
++    v_s = __crc32b(v_s, a_x.ptr[0u]);
++    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
++  }
++  {
++    wuffs_base__slice_u8 i_slice_p = a_x;
++    v_p.ptr = i_slice_p.ptr;
++    v_p.len = 8;
++    const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 128) * 128));
++    while (v_p.ptr < i_end0_p) {
++      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
++      v_p.ptr += 8;
++      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
++      v_p.ptr += 8;
++      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
++      v_p.ptr += 8;
++      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
++      v_p.ptr += 8;
++      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
++      v_p.ptr += 8;
++      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
++      v_p.ptr += 8;
++      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
++      v_p.ptr += 8;
++      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
++      v_p.ptr += 8;
++      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
++      v_p.ptr += 8;
++      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
++      v_p.ptr += 8;
++      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
++      v_p.ptr += 8;
++      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
++      v_p.ptr += 8;
++      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
++      v_p.ptr += 8;
++      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
++      v_p.ptr += 8;
++      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
++      v_p.ptr += 8;
++      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
++      v_p.ptr += 8;
++    }
++    v_p.len = 8;
++    const uint8_t* i_end1_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 8) * 8));
++    while (v_p.ptr < i_end1_p) {
++      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
++      v_p.ptr += 8;
++    }
++    v_p.len = 1;
++    const uint8_t* i_end2_p = wuffs_private_impl__ptr_u8_plus_len(i_slice_p.ptr, i_slice_p.len);
++    while (v_p.ptr < i_end2_p) {
++      v_s = __crc32b(v_s, v_p.ptr[0u]);
++      v_p.ptr += 1;
++    }
++    v_p.len = 0;
+   }
++  self->private_impl.f_state = (4294967295u ^ v_s);
+   return wuffs_base__make_empty_struct();
+ }
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_CRC32)
++// ‼ WUFFS MULTI-FILE SECTION -arm_crc32
+ 
+-// -------- func gif.decoder.tell_me_more
++// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
++// -------- func crc32.ieee_hasher.up_x86_sse42
+ 
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_gif__decoder__tell_me_more(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__more_information* a_minfo,
+-    wuffs_base__io_buffer* a_src) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
++static wuffs_base__empty_struct
++wuffs_crc32__ieee_hasher__up_x86_sse42(
++    wuffs_crc32__ieee_hasher* self,
++    wuffs_base__slice_u8 a_x) {
++  uint32_t v_s = 0;
++  __m128i v_kk = {0};
++  __m128i v_x0 = {0};
++  __m128i v_x1 = {0};
++  __m128i v_x2 = {0};
++  __m128i v_x3 = {0};
++  __m128i v_x4 = {0};
++  __m128i v_x5 = {0};
++  __m128i v_x6 = {0};
++  __m128i v_x7 = {0};
++  __m128i v_y0 = {0};
++  __m128i v_y1 = {0};
++  __m128i v_y2 = {0};
++  __m128i v_y3 = {0};
++  __m128i v_y4 = {0};
++  __m128i v_y5 = {0};
++  __m128i v_y6 = {0};
++  __m128i v_y7 = {0};
++
++  v_s = (4294967295u ^ self->private_impl.f_state);
++  while ((((uint64_t)(a_x.len)) > 0u) && ((15u & ((uint32_t)(0xFFFu & (uintptr_t)(a_x.ptr)))) != 0u)) {
++    v_s = (WUFFS_CRC32__IEEE_TABLE[0u][((uint8_t)(((uint8_t)(v_s)) ^ a_x.ptr[0u]))] ^ (v_s >> 8u));
++    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
+   }
+-  if (!a_dst || !a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  if (((uint64_t)(a_x.len)) >= 128u) {
++    v_x0 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u));
++    v_x1 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16u));
++    v_x2 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 32u));
++    v_x3 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 48u));
++    v_x4 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 64u));
++    v_x5 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 80u));
++    v_x6 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 96u));
++    v_x7 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 112u));
++    v_kk = _mm_set_epi32((int32_t)(0u), (int32_t)(2433674945u), (int32_t)(0u), (int32_t)(872412467u));
++    v_x0 = _mm_xor_si128(v_x0, _mm_cvtsi32_si128((int32_t)(v_s)));
++    a_x = wuffs_base__slice_u8__subslice_i(a_x, 128u);
++    while (((uint64_t)(a_x.len)) >= 128u) {
++      v_y0 = _mm_clmulepi64_si128(v_x0, v_kk, (int32_t)(0u));
++      v_x0 = _mm_clmulepi64_si128(v_x0, v_kk, (int32_t)(17u));
++      v_y1 = _mm_clmulepi64_si128(v_x1, v_kk, (int32_t)(0u));
++      v_x1 = _mm_clmulepi64_si128(v_x1, v_kk, (int32_t)(17u));
++      v_y2 = _mm_clmulepi64_si128(v_x2, v_kk, (int32_t)(0u));
++      v_x2 = _mm_clmulepi64_si128(v_x2, v_kk, (int32_t)(17u));
++      v_y3 = _mm_clmulepi64_si128(v_x3, v_kk, (int32_t)(0u));
++      v_x3 = _mm_clmulepi64_si128(v_x3, v_kk, (int32_t)(17u));
++      v_y4 = _mm_clmulepi64_si128(v_x4, v_kk, (int32_t)(0u));
++      v_x4 = _mm_clmulepi64_si128(v_x4, v_kk, (int32_t)(17u));
++      v_y5 = _mm_clmulepi64_si128(v_x5, v_kk, (int32_t)(0u));
++      v_x5 = _mm_clmulepi64_si128(v_x5, v_kk, (int32_t)(17u));
++      v_y6 = _mm_clmulepi64_si128(v_x6, v_kk, (int32_t)(0u));
++      v_x6 = _mm_clmulepi64_si128(v_x6, v_kk, (int32_t)(17u));
++      v_y7 = _mm_clmulepi64_si128(v_x7, v_kk, (int32_t)(0u));
++      v_x7 = _mm_clmulepi64_si128(v_x7, v_kk, (int32_t)(17u));
++      v_y0 = _mm_xor_si128(v_y0, _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u)));
++      v_x0 = _mm_xor_si128(v_x0, v_y0);
++      v_y1 = _mm_xor_si128(v_y1, _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16u)));
++      v_x1 = _mm_xor_si128(v_x1, v_y1);
++      v_y2 = _mm_xor_si128(v_y2, _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 32u)));
++      v_x2 = _mm_xor_si128(v_x2, v_y2);
++      v_y3 = _mm_xor_si128(v_y3, _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 48u)));
++      v_x3 = _mm_xor_si128(v_x3, v_y3);
++      v_y4 = _mm_xor_si128(v_y4, _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 64u)));
++      v_x4 = _mm_xor_si128(v_x4, v_y4);
++      v_y5 = _mm_xor_si128(v_y5, _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 80u)));
++      v_x5 = _mm_xor_si128(v_x5, v_y5);
++      v_y6 = _mm_xor_si128(v_y6, _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 96u)));
++      v_x6 = _mm_xor_si128(v_x6, v_y6);
++      v_y7 = _mm_xor_si128(v_y7, _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 112u)));
++      v_x7 = _mm_xor_si128(v_x7, v_y7);
++      a_x = wuffs_base__slice_u8__subslice_i(a_x, 128u);
++    }
++    v_kk = _mm_set_epi32((int32_t)(0u), (int32_t)(3433693342u), (int32_t)(0u), (int32_t)(2926088593u));
++    v_y0 = _mm_clmulepi64_si128(v_x0, v_kk, (int32_t)(0u));
++    v_x0 = _mm_clmulepi64_si128(v_x0, v_kk, (int32_t)(17u));
++    v_y2 = _mm_clmulepi64_si128(v_x2, v_kk, (int32_t)(0u));
++    v_x2 = _mm_clmulepi64_si128(v_x2, v_kk, (int32_t)(17u));
++    v_y4 = _mm_clmulepi64_si128(v_x4, v_kk, (int32_t)(0u));
++    v_x4 = _mm_clmulepi64_si128(v_x4, v_kk, (int32_t)(17u));
++    v_y6 = _mm_clmulepi64_si128(v_x6, v_kk, (int32_t)(0u));
++    v_x6 = _mm_clmulepi64_si128(v_x6, v_kk, (int32_t)(17u));
++    v_y0 = _mm_xor_si128(v_y0, v_x1);
++    v_x0 = _mm_xor_si128(v_x0, v_y0);
++    v_y2 = _mm_xor_si128(v_y2, v_x3);
++    v_x2 = _mm_xor_si128(v_x2, v_y2);
++    v_y4 = _mm_xor_si128(v_y4, v_x5);
++    v_x4 = _mm_xor_si128(v_x4, v_y4);
++    v_y6 = _mm_xor_si128(v_y6, v_x7);
++    v_x6 = _mm_xor_si128(v_x6, v_y6);
++    v_kk = _mm_set_epi32((int32_t)(0u), (int32_t)(2166711591u), (int32_t)(0u), (int32_t)(4057597354u));
++    v_y0 = _mm_clmulepi64_si128(v_x0, v_kk, (int32_t)(0u));
++    v_x0 = _mm_clmulepi64_si128(v_x0, v_kk, (int32_t)(17u));
++    v_y4 = _mm_clmulepi64_si128(v_x4, v_kk, (int32_t)(0u));
++    v_x4 = _mm_clmulepi64_si128(v_x4, v_kk, (int32_t)(17u));
++    v_y0 = _mm_xor_si128(v_y0, v_x2);
++    v_x0 = _mm_xor_si128(v_x0, v_y0);
++    v_y4 = _mm_xor_si128(v_y4, v_x6);
++    v_x4 = _mm_xor_si128(v_x4, v_y4);
++    v_kk = _mm_set_epi32((int32_t)(0u), (int32_t)(496309207u), (int32_t)(0u), (int32_t)(2402626965u));
++    v_y0 = _mm_clmulepi64_si128(v_x0, v_kk, (int32_t)(0u));
++    v_x0 = _mm_clmulepi64_si128(v_x0, v_kk, (int32_t)(17u));
++    v_y0 = _mm_xor_si128(v_y0, v_x4);
++    v_x0 = _mm_xor_si128(v_x0, v_y0);
++    v_kk = _mm_set_epi32((int32_t)(1u), (int32_t)(3681617473u), (int32_t)(3034951717u), (int32_t)(4144043585u));
++    v_s = ((uint32_t)(_mm_extract_epi32(_mm_clmulepi64_si128(_mm_clmulepi64_si128(_mm_cvtsi64_si128((int64_t)(((uint64_t)(_mm_extract_epi64(v_x0, (int32_t)(0u)))))), v_kk, (int32_t)(0u)), v_kk, (int32_t)(16u)), (int32_t)(2u))));
++    v_kk = _mm_set_epi32((int32_t)(1u), (int32_t)(3681617473u), (int32_t)(3034951717u), (int32_t)(4144043585u));
++    v_s = ((uint32_t)(_mm_extract_epi32(_mm_clmulepi64_si128(_mm_clmulepi64_si128(_mm_cvtsi64_si128((int64_t)((((uint64_t)(_mm_extract_epi64(v_x0, (int32_t)(1u)))) ^ ((uint64_t)(v_s))))), v_kk, (int32_t)(0u)), v_kk, (int32_t)(16u)), (int32_t)(2u))));
++  }
++  while (((uint64_t)(a_x.len)) >= 8u) {
++    v_kk = _mm_set_epi32((int32_t)(1u), (int32_t)(3681617473u), (int32_t)(3034951717u), (int32_t)(4144043585u));
++    v_s = ((uint32_t)(_mm_extract_epi32(_mm_clmulepi64_si128(_mm_clmulepi64_si128(_mm_cvtsi64_si128((int64_t)((wuffs_base__peek_u64le__no_bounds_check(a_x.ptr) ^ ((uint64_t)(v_s))))), v_kk, (int32_t)(0u)), v_kk, (int32_t)(16u)), (int32_t)(2u))));
++    a_x = wuffs_base__slice_u8__subslice_i(a_x, 8u);
+   }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 2)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  while (((uint64_t)(a_x.len)) > 0u) {
++    v_s = (WUFFS_CRC32__IEEE_TABLE[0u][((uint8_t)(((uint8_t)(v_s)) ^ a_x.ptr[0u]))] ^ (v_s >> 8u));
++    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
+   }
+-  self->private_impl.active_coroutine = 0;
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++  self->private_impl.f_state = (4294967295u ^ v_s);
++  return wuffs_base__make_empty_struct();
++}
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
+ 
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC32)
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_tell_me_more[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC64)
+ 
+-    while (true) {
+-      {
+-        wuffs_base__status t_0 = wuffs_gif__decoder__do_tell_me_more(self, a_dst, a_minfo, a_src);
+-        v_status = t_0;
+-      }
+-      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_gif__error__truncated_input);
+-        goto exit;
+-      }
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+-    }
++// ---------------- Status Codes Implementations
+ 
+-    ok:
+-    self->private_impl.p_tell_me_more[0] = 0;
+-    goto exit;
+-  }
++// ---------------- Private Consts
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_tell_me_more[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
++static const uint64_t
++WUFFS_CRC64__ECMA_TABLE[8][256] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  {
++    0u, 12911341560706588527u, 17619267392293085275u, 5164075066763771700u, 8921845837811637811u, 14483170935171449180u, 10328150133527543400u, 4357999468653093127u,
++    17843691675623275622u, 4940391307328217865u, 226782375002905661u, 12685511915359257426u, 10119945210068853333u, 4566377562367245626u, 8715998937306186254u, 14689403211693301089u,
++    9051005139383707209u, 14895072503764629798u, 9880782614656435730u, 4193374422961527165u, 453564750005811322u, 13070904082541799189u, 17496296445768931361u, 4747102235666401102u,
++    9960315520700766767u, 4113029525020509504u, 9132755124734491252u, 14812441257301386523u, 17431997874612372508u, 4811156168024382323u, 391483189436228679u, 13132671735097031464u,
++    18102010278767414418u, 5195199925788447741u, 1131375642422963401u, 13591081480414639014u, 9288535643022529185u, 3731739485546663374u, 8386748845923054330u, 14361410892855143829u,
++    907129500011622644u, 13814943346342178715u, 17875617253995106479u, 5421418680781082560u, 8594564625313771207u, 14152643483341451688u, 9494204471332802204u, 3525329033817543155u,
++    9704381199536204507u, 3855837706121835956u, 8226059050041019008u, 13908973417437222383u, 18265510249468982504u, 5643692520190618503u, 718348998302913715u, 13463047253836762076u,
++    8146277531524994749u, 13989069943491807698u, 9622312336048764646u, 3938150108875254153u, 782966378872457358u, 13399312233903888353u, 18327840216347633877u, 5582173445676054458u,
++    7257036000092981153u, 15535280666427316430u, 10390399851576895482u, 2529986302517213333u, 2262751284845926802u, 12414353723947190013u, 16997392145760156105u, 6398650419759490726u,
++    10599130201908394951u, 2322133910755632296u, 7463478971093326748u, 15329644185724306675u, 16773497691846108660u, 6622864283287239323u, 2036569382881248687u, 12640783567252986560u,
++    1814259000023245288u, 12250853444207230599u, 17125426475222188467u, 6811676960462675676u, 7132938157145702363u, 15119434731753103540u, 10842837361562165120u, 2690676064372932847u,
++    17189129250627542414u, 6747026957542163169u, 1875814858707893717u, 12188560364711551674u, 10762704257491731389u, 2770420489343360210u, 7050658067635086310u, 15201536148867841161u,
++    11493583972846619443u, 3219832958944941148u, 7711675412243671912u, 15576564987190227975u, 16452118100082038016u, 6305011443818121839u, 1213047649942025563u, 11816267669673208372u,
++    7503259434831574869u, 15784731923736995898u, 11287385040381237006u, 3425713581329221729u, 1436697996605827430u, 11591809733187859977u, 16677985422973077821u, 6078267261889762898u,
++    16292555063049989498u, 5851447209550246421u, 1630020308903038241u, 11939238787801010766u, 11081681957373440841u, 3090674103720225830u, 7876300217750508306u, 16023932746787097725u,
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++    2614941114708524542u, 478839856218937618u, 7031308297775952934u, 4862538486186004682u, 12679346479943806542u, 10167187506301176482u, 16872750024341366678u, 14467534086004917114u,
++    4067808311486097748u, 1917635425212288440u, 9056132646164258956u, 6864284009665987680u, 12956846781012327140u, 10457633378212404744u, 17731214676258583356u, 15347951510183778256u,
++    13678285260964991153u, 11474057634298917981u, 17873974704293108073u, 15772186515461651845u, 3922409453435093761u, 1477250791027468269u, 8336488571297909465u, 5863164957556321845u,
++    15063804914172139187u, 17573731408537121375u, 10724047561790938987u, 13131499433903012743u, 6535100908406441219u, 8673469987586793967u, 2265113888856263899u, 4431612735036172343u,
++    6101716826101034838u, 8521560882533092282u, 1257557157511194254u, 3719041779816530530u, 16073789369309412582u, 18302240886422657034u, 11155285395280885054u, 13267751491267498450u,
++    5229882229417049084u, 7672809353916620560u, 957679712437875236u, 3433240205686757064u, 14062616595551905868u, 16269110787469675680u, 9725076972372009364u, 11824592944582215032u,
++    14786588404820918809u, 17283564772171425525u, 9865866699426761665u, 12251361247433944877u, 5082513026899726761u, 7234957975966594373u, 240568853608110193u, 2430150771060047005u,
++    8135616622972195496u, 5911125624750880324u, 3835270850424576880u, 1717722887501053852u, 18112265292328517912u, 15687370158510810612u, 13728568019331975360u, 11271004332422294572u,
++    17674167644946721613u, 15539754686561718177u, 12725302718847165077u, 10553717607734429305u, 9150035367232403709u, 6635062193578351633u, 4261933579054297381u, 1858407040333796809u,
++    16825062113507622887u, 14668696227990231819u, 12439147139764057663u, 10254616302904316627u, 7116415003206659159u, 4624520499557157051u, 2818284765131990415u, 428829699325493603u,
++    7844818906870187522u, 5634399380472423150u, 2954501582054936538u, 860032292373900086u, 16672977142595818930u, 14235136279826723166u, 11726329915112643690u, 9246813302127474822u,
++    3513487962258617315u, 1309817375275636495u, 8438743075148003899u, 6337546835477044951u, 13510341259434958931u, 11065716548023207103u, 18347741267953084811u, 15874986514718330215u,
++    13070201816812882438u, 10920562880461237994u, 17346939975173587934u, 15155660198108440370u, 4530227777712527798u, 2031571415669472602u, 8863225470072344686u, 6480554254231811202u,
++    12203433652202069676u, 10066744842596399680u, 17043121765066184564u, 14873799311837557656u, 2515114315022388508u, 2382082824317424u, 7438083559633061060u, 5032329272252129320u,
++    3241337884980569929u, 1014584229661574053u, 7576621447749742225u, 5461349336866867837u, 12053812688995611897u, 9631145302510833685u, 16328262745174523169u, 13868458115447806413u,
++    10459764458834098168u, 12954464700354433812u, 15345618707833241120u, 17733376188870843084u, 1915359424875750472u, 4070045040789094564u, 6866480411373514128u, 9053834855311329660u,
++    1479513538183220765u, 3920177730975673073u, 5860963271950469061u, 8338799892386374441u, 11471931442405006765u, 13680653107046267201u, 15774533275401163893u, 17871808579940708505u,
++    626467317811485367u, 3053060038512016987u, 5579874205336949615u, 8034632152261867395u, 9443377510452431111u, 11665044903776710123u, 14326943696444768479u, 16446171926791300147u,
++    10165026053799453522u, 12681679222183806910u, 14469915951933188746u, 16870619158449294950u, 481137707216220386u, 2612744652856644622u, 4860301542120094010u, 7033584512875404758u,
++    16271233245944390992u, 14060243759811248572u, 11822251249501760648u, 9727246909562751076u, 7670541700849153760u, 5232109988680716812u, 3435445775002107704u, 955373222128557012u,
++    7237229143405862069u, 5080272407415421017u, 2427958334666397037u, 242871556844564865u, 17281429885116092165u, 14788965422804986857u, 12253699033039161053u, 9863708918048465457u,
++    8671167069616523295u, 6537293559533907187u, 4433853414635209159u, 2262842661302265131u, 17575888975148309423u, 15061467343334031171u, 13129122476067492471u, 10726182388697724571u,
++    18300070734464807418u, 16076131279156974870u, 13270124387156703266u, 11153162876657622222u, 8523867158108594762u, 6099511471519499942u, 3716814080667593618u, 1259824750463930238u,
++    4622362935074513227u, 7118752576211060135u, 431206655032469651u, 2816149936058911871u, 14670999143827763963u, 16822869460218058263u, 10252375625438018339u, 12441418369480155087u,
++    14232830006413318318u, 16675182499310091330u, 9249040999114314102u, 11724062320027170202u, 5636569530263980830u, 7842476994894082034u, 857659398650987206u, 2956624102806742570u,
++    15689637813740375044u, 18110037535197587688u, 11268798760944846300u, 13730874507508556080u, 5909003164109873076u, 8137989456584309592u, 1720064584747800172u, 3833100915362378368u,
++    6637197082762229217u, 9147658351414628621u, 1856069252600036409u, 4264091358266300629u, 15537483516989711953u, 17676408262268928701u, 10555910046260817801u, 12723000017772809061u,
++  }, {
++    0u, 15762200328042667840u, 2856835172924432389u, 18238190752146915141u, 5713670345848864778u, 10805715811487326026u, 7561135427655163919u, 12848797446532677455u,
++    11427340691697729556u, 4911321075843194708u, 13345174655120580625u, 7173389830452510545u, 15122270855310327838u, 820654137405644638u, 17760118084036943899u, 3226275954771115867u,
++    12678913378224905901u, 8451595299172663789u, 9822642151686389416u, 5976168202979041768u, 16194808345499688615u, 4179641502022828519u, 14346779660905021090u, 2135996745225445858u,
++    3558579666237890233u, 16995468946051088889u, 1641308274811289276u, 14733962144962732540u, 9090961916423626419u, 11859948271085519347u, 6452551909542231734u, 9453764156601606646u,
++    14785799433083167711u, 1697614691135618207u, 16903190598345327578u, 3470771065211313306u, 9402037001392841685u, 6396285171454065813u, 11952336405958083536u, 9178809987380452496u,
++    6027971268800324555u, 9878982515431963787u, 8359283004045657038u, 12591138999497481358u, 2084233168694272961u, 14290549069261356161u, 4271993490450891716u, 16282692837778922628u,
++    7117159332475780466u, 13293411258189767218u, 4999205320339463543u, 11519692655715205687u, 3282616549622578552u, 17811921192019632696u, 732879648334208381u, 15029958398333780541u,
++    18181923832847252838u, 2805107922438644262u, 15850048426093911395u, 92388385340408355u, 12905103819084463468u, 7612972483059622444u, 10717907374994120041u, 5621392111171994153u,
++    629311348378851643u, 15133597752622646907u, 3395229382271236414u, 17699378041462564478u, 5183867188229904689u, 11335100742646646385u, 6941542130422626612u, 13469099241846138484u,
++    10821536956051937583u, 5517832210058282607u, 12792570342908131626u, 7725577015716947562u, 15665448522205731109u, 277059068684322405u, 18357619974760904992u, 2629481737494357600u,
++    12055942537600649110u, 9075274912216783062u, 9289461107078326163u, 6508930745710590163u, 16718566008091314076u, 3655465612432595164u, 14961454118931310489u, 1522030784741112025u,
++    4168466337388545922u, 16386289672930760898u, 2196870928291817351u, 14177982363995224263u, 8543986980901783432u, 12406505804242475208u, 5852377756745475981u, 10054645982306597069u,
++    14234318664951560932u, 2248669261341992356u, 16298510681658284769u, 4076149859246245281u, 9998410640678927086u, 5800610134637962670u, 12494386096293518059u, 8636334373997692331u,
++    6565233099245157104u, 9341293662428177840u, 8987461698644630261u, 11963660006880118197u, 1465759296668416762u, 14909722918146729402u, 3743309483160705791u, 16810949547632248255u,
++    7673845564465570889u, 12736298827739970313u, 5610215844877288524u, 10909381007990496012u, 2681314179816367171u, 18413922163761052419u, 184776770680816710u, 15577635352405072646u,
++    17647610443766686813u, 3338994288425483037u, 15225944966119244888u, 717191546761911064u, 13520897736746902615u, 6997878541721926423u, 11242784222343988306u, 5096087965850491666u,
++    1258622696757703286u, 14684288965200833846u, 3950222953022231155u, 17036158029906267443u, 6790458764542472828u, 9548224856613104956u, 8762045755503235705u, 11756540858562383161u,
++    10367734376459809378u, 6151638724996853026u, 12124837022850257511u, 8285082520580115751u, 13883084260845253224u, 1879138195689975080u, 16649556998353834605u, 4445490780332133677u,
++    13727827248377474267u, 7223104792207356827u, 11035664420116565214u, 4870673773980832670u, 17422178244240010449u, 3131857036752565137u, 15451154031433895124u, 924103331921597332u,
++    2311784730144877775u, 18062687245331231631u, 554118137368644810u, 15928680121837474698u, 8024872609708797125u, 13105623011270275973u, 5258963474988715200u, 10539833548380279680u,
++    15872427342139003305u, 502333042764009193u, 18150549824433566124u, 2404114375865757420u, 10596187595637903779u, 5310779519913856739u, 13017861491421180326u, 7932573568563556070u,
++    4814384572959953341u, 10983915471956430589u, 7310931224865190328u, 13820193315420761848u, 980423156880069047u, 15503004023780282103u, 3044061569482224050u, 17329913425393921778u,
++    8336932674777091844u, 12181156958151692356u, 6059373863990406913u, 10279938678082531393u, 4393741856583634702u, 16593268045114871886u, 1971504083133951755u, 13970910599835103307u,
++    17087973961803566864u, 4006576835745435728u, 14591990156772618005u, 1170861220680101973u, 11704755513490951962u, 8705792948709298266u, 9640554597612056351u, 6878321524855255135u,
++    1858937689852799821u, 14083548048513152013u, 4497338522683984712u, 16489741062169236488u, 6235036951360285511u, 10104345546597921799u, 8152299718492490562u, 12365860697102636034u,
++    9753200483853429593u, 6765745319621112857u, 11601220269275925340u, 8809399250468705308u, 14416405870873226067u, 1346516287098352659u, 17272668747995384662u, 3821952007586370582u,
++    13130466198490314208u, 7820039919040899744u, 10492627387899532773u, 5414409408661555877u, 17974923397289260522u, 2579810761044912810u, 16057098401758057967u, 317732763665910447u,
++    2931518593336833524u, 17442526084696124084u, 1084062204544407025u, 15399436031514938033u, 7486618966321411582u, 13644576356632980158u, 4629793036166665723u, 11168576964637084347u,
++    15347691128931141778u, 1027777753507534802u, 17534896747071563927u, 3019349226222860247u, 11220431689754577048u, 4686116923914377176u, 13552315720802183325u, 7398828111596124125u,
++    5362628359632734342u, 10436379358185592774u, 7912374160093407363u, 13218332977821366211u, 369553541361633420u, 16113456511805446092u, 2487515902914439305u, 17887166489985742793u,
++    8865757316743550527u, 11653040814255671679u, 6677988576850966074u, 9660905738751846778u, 3765703796660934197u, 17220887603689539957u, 1434383093523822128u, 14508740362393577840u,
++    16546065181022836267u, 4549193289962883435u, 13995757083443852846u, 1766676892172462446u, 12309576339732698657u, 8100554995509053793u, 10192175931700983332u, 6327407589325138276u,
++  },
++};
+ 
+-  goto exit;
+-  exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-  }
+-  return status;
+-}
++static const uint8_t
++WUFFS_CRC64__ECMA_X86_SSE42_FOLD1[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  228u, 58u, 57u, 202u, 151u, 212u, 93u, 224u,
++  64u, 95u, 135u, 199u, 175u, 149u, 190u, 218u,
++};
+ 
+-// -------- func gif.decoder.do_tell_me_more
++static const uint8_t
++WUFFS_CRC64__ECMA_X86_SSE42_FOLD2[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  68u, 250u, 158u, 138u, 0u, 91u, 9u, 96u,
++  81u, 175u, 225u, 15u, 163u, 83u, 230u, 59u,
++};
++
++static const uint8_t
++WUFFS_CRC64__ECMA_X86_SSE42_FOLD4[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  243u, 65u, 212u, 157u, 187u, 239u, 227u, 106u,
++  244u, 45u, 132u, 167u, 84u, 96u, 31u, 8u,
++};
++
++static const uint8_t
++WUFFS_CRC64__ECMA_X86_SSE42_FOLD8[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 16u, 204u, 79u, 29u, 215u, 87u, 135u,
++  64u, 231u, 61u, 247u, 42u, 107u, 216u, 215u,
++};
++
++static const uint8_t
++WUFFS_CRC64__ECMA_X86_SSE42_MUPX[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  213u, 99u, 41u, 23u, 108u, 70u, 62u, 156u,
++  133u, 30u, 14u, 175u, 43u, 175u, 216u, 146u,
++};
++
++// ---------------- Private Initializer Prototypes
++
++// ---------------- Private Function Prototypes
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_gif__decoder__do_tell_me_more(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__more_information* a_minfo,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++static wuffs_base__empty_struct
++wuffs_crc64__ecma_hasher__up(
++    wuffs_crc64__ecma_hasher* self,
++    wuffs_base__slice_u8 a_x);
+ 
+-  uint64_t v_chunk_length = 0;
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_crc64__ecma_hasher__up__choosy_default(
++    wuffs_crc64__ecma_hasher* self,
++    wuffs_base__slice_u8 a_x);
+ 
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_crc64__ecma_hasher__up_x86_sse42(
++    wuffs_crc64__ecma_hasher* self,
++    wuffs_base__slice_u8 a_x);
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_tell_me_more[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++// ---------------- VTables
+ 
+-    if ((self->private_impl.f_call_sequence & 16u) == 0u) {
+-      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
+-      goto exit;
+-    }
+-    if (self->private_impl.f_metadata_fourcc == 0u) {
+-      status = wuffs_base__make_status(wuffs_base__error__no_more_information);
+-      goto exit;
+-    }
+-    while (true) {
+-      while (true) {
+-        if (wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))) != self->private_impl.f_metadata_io_position) {
+-          if (a_minfo != NULL) {
+-            wuffs_base__more_information__set(a_minfo,
+-                2u,
+-                0u,
+-                self->private_impl.f_metadata_io_position,
+-                0u,
+-                0u);
+-          }
+-          status = wuffs_base__make_status(wuffs_base__suspension__mispositioned_read);
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+-          continue;
+-        }
+-        if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-          if (a_minfo != NULL) {
+-            wuffs_base__more_information__set(a_minfo,
+-                0u,
+-                0u,
+-                0u,
+-                0u,
+-                0u);
+-          }
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
+-          continue;
+-        }
+-        break;
+-      }
+-      v_chunk_length = ((uint64_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src)));
+-      if (v_chunk_length <= 0u) {
+-        iop_a_src += 1u;
+-        break;
+-      }
+-      if (self->private_impl.f_metadata_fourcc == 1481461792u) {
+-        v_chunk_length += 1u;
+-      } else {
+-        iop_a_src += 1u;
+-      }
+-      self->private_impl.f_metadata_io_position = wuffs_base__u64__sat_add(wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))), v_chunk_length);
+-      if (a_minfo != NULL) {
+-        wuffs_base__more_information__set(a_minfo,
+-            3u,
+-            self->private_impl.f_metadata_fourcc,
+-            0u,
+-            wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))),
+-            self->private_impl.f_metadata_io_position);
+-      }
+-      status = wuffs_base__make_status(wuffs_base__suspension__even_more_information);
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
++const wuffs_base__hasher_u64__func_ptrs
++wuffs_crc64__ecma_hasher__func_ptrs_for__wuffs_base__hasher_u64 = {
++  (uint64_t(*)(const void*))(&wuffs_crc64__ecma_hasher__checksum_u64),
++  (uint64_t(*)(const void*,
++      uint32_t))(&wuffs_crc64__ecma_hasher__get_quirk),
++  (wuffs_base__status(*)(void*,
++      uint32_t,
++      uint64_t))(&wuffs_crc64__ecma_hasher__set_quirk),
++  (wuffs_base__empty_struct(*)(void*,
++      wuffs_base__slice_u8))(&wuffs_crc64__ecma_hasher__update),
++  (uint64_t(*)(void*,
++      wuffs_base__slice_u8))(&wuffs_crc64__ecma_hasher__update_u64),
++};
++
++// ---------------- Initializer Implementations
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_crc64__ecma_hasher__initialize(
++    wuffs_crc64__ecma_hasher* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options){
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (sizeof(*self) != sizeof_star_self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  }
++  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
++      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++  }
++
++  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
++    // The whole point of this if-check is to detect an uninitialized *self.
++    // We disable the warning on GCC. Clang-5.0 does not have this warning.
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++#endif
++    if (self->private_impl.magic != 0) {
++      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
+     }
+-    if (a_minfo != NULL) {
+-      wuffs_base__more_information__set(a_minfo,
+-          3u,
+-          self->private_impl.f_metadata_fourcc,
+-          0u,
+-          self->private_impl.f_metadata_io_position,
+-          self->private_impl.f_metadata_io_position);
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++  } else {
++    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
++      memset(self, 0, sizeof(*self));
++      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
++    } else {
++      memset(&(self->private_impl), 0, sizeof(self->private_impl));
+     }
+-    self->private_impl.f_call_sequence &= 239u;
+-    self->private_impl.f_metadata_fourcc = 0u;
+-    self->private_impl.f_metadata_io_position = 0u;
+-    status = wuffs_base__make_status(NULL);
+-    goto ok;
+-
+-    ok:
+-    self->private_impl.p_do_tell_me_more[0] = 0;
+-    goto exit;
+   }
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_do_tell_me_more[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.choosy_up = &wuffs_crc64__ecma_hasher__up__choosy_default;
+ 
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  self->private_impl.magic = WUFFS_BASE__MAGIC;
++  self->private_impl.vtable_for__wuffs_base__hasher_u64.vtable_name =
++      wuffs_base__hasher_u64__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__hasher_u64.function_pointers =
++      (const void*)(&wuffs_crc64__ecma_hasher__func_ptrs_for__wuffs_base__hasher_u64);
++  return wuffs_base__make_status(NULL);
++}
++
++wuffs_crc64__ecma_hasher*
++wuffs_crc64__ecma_hasher__alloc(void) {
++  wuffs_crc64__ecma_hasher* x =
++      (wuffs_crc64__ecma_hasher*)(calloc(1, sizeof(wuffs_crc64__ecma_hasher)));
++  if (!x) {
++    return NULL;
+   }
++  if (wuffs_crc64__ecma_hasher__initialize(
++      x, sizeof(wuffs_crc64__ecma_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++    free(x);
++    return NULL;
++  }
++  return x;
++}
+ 
+-  return status;
++size_t
++sizeof__wuffs_crc64__ecma_hasher(void) {
++  return sizeof(wuffs_crc64__ecma_hasher);
+ }
+ 
+-// -------- func gif.decoder.num_animation_loops
++// ---------------- Function Implementations
++
++// -------- func crc64.ecma_hasher.get_quirk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_gif__decoder__num_animation_loops(
+-    const wuffs_gif__decoder* self) {
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_crc64__ecma_hasher__get_quirk(
++    const wuffs_crc64__ecma_hasher* self,
++    uint32_t a_key) {
+   if (!self) {
+     return 0;
+   }
+@@ -37136,38 +37965,134 @@ wuffs_gif__decoder__num_animation_loops(
+     return 0;
+   }
+ 
+-  if (self->private_impl.f_seen_num_animation_loops_value) {
+-    return self->private_impl.f_num_animation_loops_value;
+-  }
+-  if (self->private_impl.f_num_decoded_frame_configs_value > 1u) {
+-    return 1u;
+-  }
+   return 0u;
+ }
+ 
+-// -------- func gif.decoder.num_decoded_frame_configs
++// -------- func crc64.ecma_hasher.set_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_crc64__ecma_hasher__set_quirk(
++    wuffs_crc64__ecma_hasher* self,
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++
++  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++}
++
++// -------- func crc64.ecma_hasher.update
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_crc64__ecma_hasher__update(
++    wuffs_crc64__ecma_hasher* self,
++    wuffs_base__slice_u8 a_x) {
++  if (!self) {
++    return wuffs_base__make_empty_struct();
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_empty_struct();
++  }
++
++  if (self->private_impl.f_state == 0u) {
++    self->private_impl.choosy_up = (
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_crc64__ecma_hasher__up_x86_sse42 :
++#endif
++        self->private_impl.choosy_up);
++  }
++  wuffs_crc64__ecma_hasher__up(self, a_x);
++  return wuffs_base__make_empty_struct();
++}
++
++// -------- func crc64.ecma_hasher.update_u64
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_gif__decoder__num_decoded_frame_configs(
+-    const wuffs_gif__decoder* self) {
++wuffs_crc64__ecma_hasher__update_u64(
++    wuffs_crc64__ecma_hasher* self,
++    wuffs_base__slice_u8 a_x) {
+   if (!self) {
+     return 0;
+   }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+     return 0;
+   }
+ 
+-  return self->private_impl.f_num_decoded_frame_configs_value;
++  wuffs_crc64__ecma_hasher__update(self, a_x);
++  return wuffs_crc64__ecma_hasher__checksum_u64(self);
+ }
+ 
+-// -------- func gif.decoder.num_decoded_frames
++// -------- func crc64.ecma_hasher.up
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_crc64__ecma_hasher__up(
++    wuffs_crc64__ecma_hasher* self,
++    wuffs_base__slice_u8 a_x) {
++  return (*self->private_impl.choosy_up)(self, a_x);
++}
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_crc64__ecma_hasher__up__choosy_default(
++    wuffs_crc64__ecma_hasher* self,
++    wuffs_base__slice_u8 a_x) {
++  uint64_t v_s = 0;
++  wuffs_base__slice_u8 v_p = {0};
++
++  v_s = (18446744073709551615u ^ self->private_impl.f_state);
++  {
++    wuffs_base__slice_u8 i_slice_p = a_x;
++    v_p.ptr = i_slice_p.ptr;
++    v_p.len = 8;
++    const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 8) * 8));
++    while (v_p.ptr < i_end0_p) {
++      v_s ^= ((((uint64_t)(v_p.ptr[0u])) << 0u) |
++          (((uint64_t)(v_p.ptr[1u])) << 8u) |
++          (((uint64_t)(v_p.ptr[2u])) << 16u) |
++          (((uint64_t)(v_p.ptr[3u])) << 24u) |
++          (((uint64_t)(v_p.ptr[4u])) << 32u) |
++          (((uint64_t)(v_p.ptr[5u])) << 40u) |
++          (((uint64_t)(v_p.ptr[6u])) << 48u) |
++          (((uint64_t)(v_p.ptr[7u])) << 56u));
++      v_s = (WUFFS_CRC64__ECMA_TABLE[0u][(255u & (v_s >> 56u))] ^
++          WUFFS_CRC64__ECMA_TABLE[1u][(255u & (v_s >> 48u))] ^
++          WUFFS_CRC64__ECMA_TABLE[2u][(255u & (v_s >> 40u))] ^
++          WUFFS_CRC64__ECMA_TABLE[3u][(255u & (v_s >> 32u))] ^
++          WUFFS_CRC64__ECMA_TABLE[4u][(255u & (v_s >> 24u))] ^
++          WUFFS_CRC64__ECMA_TABLE[5u][(255u & (v_s >> 16u))] ^
++          WUFFS_CRC64__ECMA_TABLE[6u][(255u & (v_s >> 8u))] ^
++          WUFFS_CRC64__ECMA_TABLE[7u][(255u & (v_s >> 0u))]);
++      v_p.ptr += 8;
++    }
++    v_p.len = 1;
++    const uint8_t* i_end1_p = wuffs_private_impl__ptr_u8_plus_len(i_slice_p.ptr, i_slice_p.len);
++    while (v_p.ptr < i_end1_p) {
++      v_s = (WUFFS_CRC64__ECMA_TABLE[0u][((uint8_t)(((uint8_t)(v_s)) ^ v_p.ptr[0u]))] ^ (v_s >> 8u));
++      v_p.ptr += 1;
++    }
++    v_p.len = 0;
++  }
++  self->private_impl.f_state = (18446744073709551615u ^ v_s);
++  return wuffs_base__make_empty_struct();
++}
++
++// -------- func crc64.ecma_hasher.checksum_u64
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_gif__decoder__num_decoded_frames(
+-    const wuffs_gif__decoder* self) {
++wuffs_crc64__ecma_hasher__checksum_u64(
++    const wuffs_crc64__ecma_hasher* self) {
+   if (!self) {
+     return 0;
+   }
+@@ -37176,72 +38101,473 @@ wuffs_gif__decoder__num_decoded_frames(
+     return 0;
+   }
+ 
+-  return self->private_impl.f_num_decoded_frames_value;
++  return self->private_impl.f_state;
+ }
+ 
+-// -------- func gif.decoder.frame_dirty_rect
++// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
++// -------- func crc64.ecma_hasher.up_x86_sse42
+ 
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
+-wuffs_gif__decoder__frame_dirty_rect(
+-    const wuffs_gif__decoder* self) {
++static wuffs_base__empty_struct
++wuffs_crc64__ecma_hasher__up_x86_sse42(
++    wuffs_crc64__ecma_hasher* self,
++    wuffs_base__slice_u8 a_x) {
++  uint64_t v_s = 0;
++  wuffs_base__slice_u8 v_p = {0};
++  uint8_t v_buf[48] = {0};
++  __m128i v_xa = {0};
++  __m128i v_xb = {0};
++  __m128i v_xc = {0};
++  __m128i v_xd = {0};
++  __m128i v_xe = {0};
++  __m128i v_xf = {0};
++  __m128i v_xg = {0};
++  __m128i v_xh = {0};
++  __m128i v_mu1 = {0};
++  __m128i v_mu2 = {0};
++  __m128i v_mu4 = {0};
++  __m128i v_mu8 = {0};
++  __m128i v_mupx = {0};
++
++  v_s = (18446744073709551615u ^ self->private_impl.f_state);
++  while ((((uint64_t)(a_x.len)) > 0u) && ((15u & ((uint32_t)(0xFFFu & (uintptr_t)(a_x.ptr)))) != 0u)) {
++    v_s = (WUFFS_CRC64__ECMA_TABLE[0u][((uint8_t)(((uint8_t)(v_s)) ^ a_x.ptr[0u]))] ^ (v_s >> 8u));
++    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
++  }
++  do {
++    do {
++      if (((uint64_t)(a_x.len)) >= 128u) {
++      } else if (((uint64_t)(a_x.len)) >= 64u) {
++        v_xa = _mm_xor_si128(_mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u)), _mm_cvtsi64_si128((int64_t)(v_s)));
++        v_xb = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16u));
++        v_xc = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 32u));
++        v_xd = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 48u));
++        a_x = wuffs_base__slice_u8__subslice_i(a_x, 64u);
++        break;
++      } else if (((uint64_t)(a_x.len)) >= 32u) {
++        v_xa = _mm_xor_si128(_mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u)), _mm_cvtsi64_si128((int64_t)(v_s)));
++        v_xb = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16u));
++        a_x = wuffs_base__slice_u8__subslice_i(a_x, 32u);
++        goto label__chain2__break;
++      } else {
++        {
++          wuffs_base__slice_u8 i_slice_p = a_x;
++          v_p.ptr = i_slice_p.ptr;
++          v_p.len = 1;
++          const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(i_slice_p.ptr, i_slice_p.len);
++          while (v_p.ptr < i_end0_p) {
++            v_s = (WUFFS_CRC64__ECMA_TABLE[0u][((uint8_t)(((uint8_t)(v_s)) ^ v_p.ptr[0u]))] ^ (v_s >> 8u));
++            v_p.ptr += 1;
++          }
++          v_p.len = 0;
++        }
++        self->private_impl.f_state = (18446744073709551615u ^ v_s);
++        return wuffs_base__make_empty_struct();
++      }
++      v_xa = _mm_xor_si128(_mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u)), _mm_cvtsi64_si128((int64_t)(v_s)));
++      v_xb = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16u));
++      v_xc = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 32u));
++      v_xd = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 48u));
++      v_xe = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 64u));
++      v_xf = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 80u));
++      v_xg = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 96u));
++      v_xh = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 112u));
++      a_x = wuffs_base__slice_u8__subslice_i(a_x, 128u);
++      v_mu8 = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC64__ECMA_X86_SSE42_FOLD8));
++      while (((uint64_t)(a_x.len)) >= 128u) {
++        v_xa = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xa, v_mu8, (int32_t)(0u)), _mm_clmulepi64_si128(v_xa, v_mu8, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u)));
++        v_xb = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xb, v_mu8, (int32_t)(0u)), _mm_clmulepi64_si128(v_xb, v_mu8, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16u)));
++        v_xc = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xc, v_mu8, (int32_t)(0u)), _mm_clmulepi64_si128(v_xc, v_mu8, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 32u)));
++        v_xd = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xd, v_mu8, (int32_t)(0u)), _mm_clmulepi64_si128(v_xd, v_mu8, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 48u)));
++        v_xe = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xe, v_mu8, (int32_t)(0u)), _mm_clmulepi64_si128(v_xe, v_mu8, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 64u)));
++        v_xf = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xf, v_mu8, (int32_t)(0u)), _mm_clmulepi64_si128(v_xf, v_mu8, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 80u)));
++        v_xg = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xg, v_mu8, (int32_t)(0u)), _mm_clmulepi64_si128(v_xg, v_mu8, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 96u)));
++        v_xh = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xh, v_mu8, (int32_t)(0u)), _mm_clmulepi64_si128(v_xh, v_mu8, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 112u)));
++        a_x = wuffs_base__slice_u8__subslice_i(a_x, 128u);
++      }
++      v_mu4 = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC64__ECMA_X86_SSE42_FOLD4));
++      v_xa = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xa, v_mu4, (int32_t)(0u)), _mm_clmulepi64_si128(v_xa, v_mu4, (int32_t)(17u))), v_xe);
++      v_xb = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xb, v_mu4, (int32_t)(0u)), _mm_clmulepi64_si128(v_xb, v_mu4, (int32_t)(17u))), v_xf);
++      v_xc = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xc, v_mu4, (int32_t)(0u)), _mm_clmulepi64_si128(v_xc, v_mu4, (int32_t)(17u))), v_xg);
++      v_xd = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xd, v_mu4, (int32_t)(0u)), _mm_clmulepi64_si128(v_xd, v_mu4, (int32_t)(17u))), v_xh);
++      if (((uint64_t)(a_x.len)) > 64u) {
++        v_xa = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xa, v_mu4, (int32_t)(0u)), _mm_clmulepi64_si128(v_xa, v_mu4, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u)));
++        v_xb = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xb, v_mu4, (int32_t)(0u)), _mm_clmulepi64_si128(v_xb, v_mu4, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16u)));
++        v_xc = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xc, v_mu4, (int32_t)(0u)), _mm_clmulepi64_si128(v_xc, v_mu4, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 32u)));
++        v_xd = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xd, v_mu4, (int32_t)(0u)), _mm_clmulepi64_si128(v_xd, v_mu4, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 48u)));
++        a_x = wuffs_base__slice_u8__subslice_i(a_x, 64u);
++      }
++    } while (0);
++    v_mu2 = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC64__ECMA_X86_SSE42_FOLD2));
++    v_xa = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xa, v_mu2, (int32_t)(0u)), _mm_clmulepi64_si128(v_xa, v_mu2, (int32_t)(17u))), v_xc);
++    v_xb = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xb, v_mu2, (int32_t)(0u)), _mm_clmulepi64_si128(v_xb, v_mu2, (int32_t)(17u))), v_xd);
++    if (((uint64_t)(a_x.len)) > 32u) {
++      v_xa = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xa, v_mu2, (int32_t)(0u)), _mm_clmulepi64_si128(v_xa, v_mu2, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u)));
++      v_xb = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xb, v_mu2, (int32_t)(0u)), _mm_clmulepi64_si128(v_xb, v_mu2, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16u)));
++      a_x = wuffs_base__slice_u8__subslice_i(a_x, 32u);
++    }
++  } while (0);
++  label__chain2__break:;
++  v_mu1 = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC64__ECMA_X86_SSE42_FOLD1));
++  v_xa = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xa, v_mu1, (int32_t)(0u)), _mm_clmulepi64_si128(v_xa, v_mu1, (int32_t)(17u))), v_xb);
++  if (((uint64_t)(a_x.len)) > 24u) {
++    v_xa = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xa, v_mu1, (int32_t)(0u)), _mm_clmulepi64_si128(v_xa, v_mu1, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u)));
++    a_x = wuffs_base__slice_u8__subslice_i(a_x, 16u);
++    if (((uint64_t)(a_x.len)) > 24u) {
++      return wuffs_base__make_empty_struct();
++    }
++  }
++  _mm_storeu_si128((__m128i*)(void*)(v_buf + (24u - ((uint64_t)(a_x.len)))), v_xa);
++  wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(v_buf, ((24u - ((uint64_t)(a_x.len))) + 16u), 48), a_x);
++  v_mu2 = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC64__ECMA_X86_SSE42_FOLD2));
++  v_xa = _mm_lddqu_si128((const __m128i*)(const void*)(v_buf + 0u));
++  v_xb = _mm_lddqu_si128((const __m128i*)(const void*)(v_buf + 16u));
++  v_xc = _mm_lddqu_si128((const __m128i*)(const void*)(v_buf + 32u));
++  v_xd = _mm_xor_si128(_mm_clmulepi64_si128(v_xa, v_mu2, (int32_t)(0u)), _mm_clmulepi64_si128(v_xa, v_mu2, (int32_t)(17u)));
++  v_xe = _mm_xor_si128(_mm_clmulepi64_si128(v_xb, v_mu1, (int32_t)(0u)), _mm_clmulepi64_si128(v_xb, v_mu1, (int32_t)(17u)));
++  v_xa = _mm_xor_si128(v_xd, _mm_xor_si128(v_xe, v_xc));
++  v_mupx = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC64__ECMA_X86_SSE42_MUPX));
++  v_xb = _mm_clmulepi64_si128(v_xa, v_mupx, (int32_t)(0u));
++  v_xc = _mm_clmulepi64_si128(v_xb, v_mupx, (int32_t)(16u));
++  v_s = ((uint64_t)(_mm_extract_epi64(_mm_xor_si128(_mm_xor_si128(v_xc, _mm_slli_si128(v_xb, (int32_t)(8u))), v_xa), (int32_t)(1u))));
++  self->private_impl.f_state = (18446744073709551615u ^ v_s);
++  return wuffs_base__make_empty_struct();
++}
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
++
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC64)
++
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__DEFLATE)
++
++// ---------------- Status Codes Implementations
++
++const char wuffs_deflate__error__bad_huffman_code_over_subscribed[] = "#deflate: bad Huffman code (over-subscribed)";
++const char wuffs_deflate__error__bad_huffman_code_under_subscribed[] = "#deflate: bad Huffman code (under-subscribed)";
++const char wuffs_deflate__error__bad_huffman_code_length_count[] = "#deflate: bad Huffman code length count";
++const char wuffs_deflate__error__bad_huffman_code_length_repetition[] = "#deflate: bad Huffman code length repetition";
++const char wuffs_deflate__error__bad_huffman_code[] = "#deflate: bad Huffman code";
++const char wuffs_deflate__error__bad_huffman_minimum_code_length[] = "#deflate: bad Huffman minimum code length";
++const char wuffs_deflate__error__bad_block[] = "#deflate: bad block";
++const char wuffs_deflate__error__bad_distance[] = "#deflate: bad distance";
++const char wuffs_deflate__error__bad_distance_code_count[] = "#deflate: bad distance code count";
++const char wuffs_deflate__error__bad_literal_length_code_count[] = "#deflate: bad literal/length code count";
++const char wuffs_deflate__error__inconsistent_stored_block_length[] = "#deflate: inconsistent stored block length";
++const char wuffs_deflate__error__missing_end_of_block_code[] = "#deflate: missing end-of-block code";
++const char wuffs_deflate__error__no_huffman_codes[] = "#deflate: no Huffman codes";
++const char wuffs_deflate__error__truncated_input[] = "#deflate: truncated input";
++const char wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state[] = "#deflate: internal error: inconsistent Huffman decoder state";
++const char wuffs_deflate__error__internal_error_inconsistent_i_o[] = "#deflate: internal error: inconsistent I/O";
++const char wuffs_deflate__error__internal_error_inconsistent_distance[] = "#deflate: internal error: inconsistent distance";
++const char wuffs_deflate__error__internal_error_inconsistent_n_bits[] = "#deflate: internal error: inconsistent n_bits";
++
++// ---------------- Private Consts
++
++static const uint8_t
++WUFFS_DEFLATE__CODE_ORDER[19] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  16u, 17u, 18u, 0u, 8u, 7u, 9u, 6u,
++  10u, 5u, 11u, 4u, 12u, 3u, 13u, 2u,
++  14u, 1u, 15u,
++};
++
++static const uint8_t
++WUFFS_DEFLATE__REVERSE8[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 128u, 64u, 192u, 32u, 160u, 96u, 224u,
++  16u, 144u, 80u, 208u, 48u, 176u, 112u, 240u,
++  8u, 136u, 72u, 200u, 40u, 168u, 104u, 232u,
++  24u, 152u, 88u, 216u, 56u, 184u, 120u, 248u,
++  4u, 132u, 68u, 196u, 36u, 164u, 100u, 228u,
++  20u, 148u, 84u, 212u, 52u, 180u, 116u, 244u,
++  12u, 140u, 76u, 204u, 44u, 172u, 108u, 236u,
++  28u, 156u, 92u, 220u, 60u, 188u, 124u, 252u,
++  2u, 130u, 66u, 194u, 34u, 162u, 98u, 226u,
++  18u, 146u, 82u, 210u, 50u, 178u, 114u, 242u,
++  10u, 138u, 74u, 202u, 42u, 170u, 106u, 234u,
++  26u, 154u, 90u, 218u, 58u, 186u, 122u, 250u,
++  6u, 134u, 70u, 198u, 38u, 166u, 102u, 230u,
++  22u, 150u, 86u, 214u, 54u, 182u, 118u, 246u,
++  14u, 142u, 78u, 206u, 46u, 174u, 110u, 238u,
++  30u, 158u, 94u, 222u, 62u, 190u, 126u, 254u,
++  1u, 129u, 65u, 193u, 33u, 161u, 97u, 225u,
++  17u, 145u, 81u, 209u, 49u, 177u, 113u, 241u,
++  9u, 137u, 73u, 201u, 41u, 169u, 105u, 233u,
++  25u, 153u, 89u, 217u, 57u, 185u, 121u, 249u,
++  5u, 133u, 69u, 197u, 37u, 165u, 101u, 229u,
++  21u, 149u, 85u, 213u, 53u, 181u, 117u, 245u,
++  13u, 141u, 77u, 205u, 45u, 173u, 109u, 237u,
++  29u, 157u, 93u, 221u, 61u, 189u, 125u, 253u,
++  3u, 131u, 67u, 195u, 35u, 163u, 99u, 227u,
++  19u, 147u, 83u, 211u, 51u, 179u, 115u, 243u,
++  11u, 139u, 75u, 203u, 43u, 171u, 107u, 235u,
++  27u, 155u, 91u, 219u, 59u, 187u, 123u, 251u,
++  7u, 135u, 71u, 199u, 39u, 167u, 103u, 231u,
++  23u, 151u, 87u, 215u, 55u, 183u, 119u, 247u,
++  15u, 143u, 79u, 207u, 47u, 175u, 111u, 239u,
++  31u, 159u, 95u, 223u, 63u, 191u, 127u, 255u,
++};
++
++static const uint32_t
++WUFFS_DEFLATE__LCODE_MAGIC_NUMBERS[32] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  1073741824u, 1073742080u, 1073742336u, 1073742592u, 1073742848u, 1073743104u, 1073743360u, 1073743616u,
++  1073743888u, 1073744400u, 1073744912u, 1073745424u, 1073745952u, 1073746976u, 1073748000u, 1073749024u,
++  1073750064u, 1073752112u, 1073754160u, 1073756208u, 1073758272u, 1073762368u, 1073766464u, 1073770560u,
++  1073774672u, 1073782864u, 1073791056u, 1073799248u, 1073807104u, 134217728u, 134217728u, 134217728u,
++};
++
++static const uint32_t
++WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[32] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  1073741824u, 1073742080u, 1073742336u, 1073742592u, 1073742864u, 1073743376u, 1073743904u, 1073744928u,
++  1073745968u, 1073748016u, 1073750080u, 1073754176u, 1073758288u, 1073766480u, 1073774688u, 1073791072u,
++  1073807472u, 1073840240u, 1073873024u, 1073938560u, 1074004112u, 1074135184u, 1074266272u, 1074528416u,
++  1074790576u, 1075314864u, 1075839168u, 1076887744u, 1077936336u, 1080033488u, 134217728u, 134217728u,
++};
++
++#define WUFFS_DEFLATE__HUFFS_TABLE_SIZE 1024u
++
++#define WUFFS_DEFLATE__HUFFS_TABLE_MASK 1023u
++
++// ---------------- Private Initializer Prototypes
++
++// ---------------- Private Function Prototypes
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_deflate__decoder__do_transform_io(
++    wuffs_deflate__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_deflate__decoder__decode_blocks(
++    wuffs_deflate__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_deflate__decoder__decode_uncompressed(
++    wuffs_deflate__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_deflate__decoder__init_fixed_huffman(
++    wuffs_deflate__decoder* self);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_deflate__decoder__init_dynamic_huffman(
++    wuffs_deflate__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_deflate__decoder__init_huff(
++    wuffs_deflate__decoder* self,
++    uint32_t a_which,
++    uint32_t a_n_codes0,
++    uint32_t a_n_codes1,
++    uint32_t a_base_symbol);
++
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_deflate__decoder__decode_huffman_bmi2(
++    wuffs_deflate__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src);
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_deflate__decoder__decode_huffman_fast32(
++    wuffs_deflate__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_deflate__decoder__decode_huffman_fast64(
++    wuffs_deflate__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_deflate__decoder__decode_huffman_fast64__choosy_default(
++    wuffs_deflate__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_deflate__decoder__decode_huffman_slow(
++    wuffs_deflate__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++// ---------------- VTables
++
++const wuffs_base__io_transformer__func_ptrs
++wuffs_deflate__decoder__func_ptrs_for__wuffs_base__io_transformer = {
++  (wuffs_base__optional_u63(*)(const void*))(&wuffs_deflate__decoder__dst_history_retain_length),
++  (uint64_t(*)(const void*,
++      uint32_t))(&wuffs_deflate__decoder__get_quirk),
++  (wuffs_base__status(*)(void*,
++      uint32_t,
++      uint64_t))(&wuffs_deflate__decoder__set_quirk),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__io_buffer*,
++      wuffs_base__io_buffer*,
++      wuffs_base__slice_u8))(&wuffs_deflate__decoder__transform_io),
++  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_deflate__decoder__workbuf_len),
++};
++
++// ---------------- Initializer Implementations
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_deflate__decoder__initialize(
++    wuffs_deflate__decoder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options){
+   if (!self) {
+-    return wuffs_base__utility__empty_rect_ie_u32();
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_rect_ie_u32();
++  if (sizeof(*self) != sizeof_star_self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  }
++  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
++      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
+   }
+ 
+-  return wuffs_base__utility__make_rect_ie_u32(
+-      wuffs_base__u32__min(self->private_impl.f_frame_rect_x0, self->private_impl.f_width),
+-      wuffs_base__u32__min(self->private_impl.f_frame_rect_y0, self->private_impl.f_height),
+-      wuffs_base__u32__min(self->private_impl.f_frame_rect_x1, self->private_impl.f_width),
+-      wuffs_base__u32__min(self->private_impl.f_dirty_max_excl_y, self->private_impl.f_height));
++  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
++    // The whole point of this if-check is to detect an uninitialized *self.
++    // We disable the warning on GCC. Clang-5.0 does not have this warning.
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++#endif
++    if (self->private_impl.magic != 0) {
++      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++    }
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++  } else {
++    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
++      memset(self, 0, sizeof(*self));
++      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
++    } else {
++      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++    }
++  }
++
++  self->private_impl.choosy_decode_huffman_fast64 = &wuffs_deflate__decoder__decode_huffman_fast64__choosy_default;
++
++  self->private_impl.magic = WUFFS_BASE__MAGIC;
++  self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
++      wuffs_base__io_transformer__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
++      (const void*)(&wuffs_deflate__decoder__func_ptrs_for__wuffs_base__io_transformer);
++  return wuffs_base__make_status(NULL);
++}
++
++wuffs_deflate__decoder*
++wuffs_deflate__decoder__alloc(void) {
++  wuffs_deflate__decoder* x =
++      (wuffs_deflate__decoder*)(calloc(1, sizeof(wuffs_deflate__decoder)));
++  if (!x) {
++    return NULL;
++  }
++  if (wuffs_deflate__decoder__initialize(
++      x, sizeof(wuffs_deflate__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++    free(x);
++    return NULL;
++  }
++  return x;
++}
++
++size_t
++sizeof__wuffs_deflate__decoder(void) {
++  return sizeof(wuffs_deflate__decoder);
+ }
+ 
+-// -------- func gif.decoder.history_retain_length
++// ---------------- Function Implementations
++
++// -------- func deflate.decoder.add_history
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_gif__decoder__history_retain_length(
+-    const wuffs_gif__decoder* self) {
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_deflate__decoder__add_history(
++    wuffs_deflate__decoder* self,
++    wuffs_base__slice_u8 a_hist) {
+   if (!self) {
+-    return 0;
++    return wuffs_base__make_empty_struct();
+   }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_empty_struct();
+   }
+ 
+-  return 0u;
++  wuffs_base__slice_u8 v_s = {0};
++  uint64_t v_n_copied = 0;
++  uint32_t v_already_full = 0;
++
++  v_s = a_hist;
++  if (((uint64_t)(v_s.len)) >= 32768u) {
++    v_s = wuffs_private_impl__slice_u8__suffix(v_s, 32768u);
++    wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_history, 32768), v_s);
++    self->private_impl.f_history_index = 32768u;
++  } else {
++    v_n_copied = wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_history, (self->private_impl.f_history_index & 32767u), 32768), v_s);
++    if (v_n_copied < ((uint64_t)(v_s.len))) {
++      v_s = wuffs_base__slice_u8__subslice_i(v_s, v_n_copied);
++      v_n_copied = wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_history, 32768), v_s);
++      self->private_impl.f_history_index = (((uint32_t)((v_n_copied & 32767u))) + 32768u);
++    } else {
++      v_already_full = 0u;
++      if (self->private_impl.f_history_index >= 32768u) {
++        v_already_full = 32768u;
++      }
++      self->private_impl.f_history_index = ((self->private_impl.f_history_index & 32767u) + ((uint32_t)((v_n_copied & 32767u))) + v_already_full);
++    }
++  }
++  wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_history, 32768, 33025), wuffs_base__make_slice_u8(self->private_data.f_history, 33025));
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-// -------- func gif.decoder.workbuf_len
++// -------- func deflate.decoder.get_quirk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_gif__decoder__workbuf_len(
+-    const wuffs_gif__decoder* self) {
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_deflate__decoder__get_quirk(
++    const wuffs_deflate__decoder* self,
++    uint32_t a_key) {
+   if (!self) {
+-    return wuffs_base__utility__empty_range_ii_u64();
++    return 0;
+   }
+   if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+       (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_range_ii_u64();
++    return 0;
+   }
+ 
+-  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
++  return 0u;
+ }
+ 
+-// -------- func gif.decoder.restart_frame
++// -------- func deflate.decoder.set_quirk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_gif__decoder__restart_frame(
+-    wuffs_gif__decoder* self,
+-    uint64_t a_index,
+-    uint64_t a_io_position) {
++wuffs_deflate__decoder__set_quirk(
++    wuffs_deflate__decoder* self,
++    uint32_t a_key,
++    uint64_t a_value) {
+   if (!self) {
+     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+@@ -37252,28 +38578,52 @@ wuffs_gif__decoder__restart_frame(
+         : wuffs_base__error__initialize_not_called);
+   }
+ 
+-  if (self->private_impl.f_call_sequence < 32u) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
+-  } else if (a_io_position == 0u) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++}
++
++// -------- func deflate.decoder.dst_history_retain_length
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
++wuffs_deflate__decoder__dst_history_retain_length(
++    const wuffs_deflate__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__make_optional_u63(false, 0u);
+   }
+-  self->private_impl.f_delayed_num_decoded_frames = false;
+-  self->private_impl.f_frame_config_io_position = a_io_position;
+-  self->private_impl.f_num_decoded_frame_configs_value = a_index;
+-  self->private_impl.f_num_decoded_frames_value = a_index;
+-  wuffs_gif__decoder__reset_gc(self);
+-  self->private_impl.f_call_sequence = 40u;
+-  return wuffs_base__make_status(NULL);
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__make_optional_u63(false, 0u);
++  }
++
++  return wuffs_base__utility__make_optional_u63(true, 0u);
+ }
+ 
+-// -------- func gif.decoder.decode_frame_config
++// -------- func deflate.decoder.workbuf_len
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_deflate__decoder__workbuf_len(
++    const wuffs_deflate__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++
++  return wuffs_base__utility__make_range_ii_u64(1u, 1u);
++}
++
++// -------- func deflate.decoder.transform_io
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_gif__decoder__decode_frame_config(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__frame_config* a_dst,
+-    wuffs_base__io_buffer* a_src) {
++wuffs_deflate__decoder__transform_io(
++    wuffs_deflate__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
+   if (!self) {
+     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+@@ -37283,12 +38633,12 @@ wuffs_gif__decoder__decode_frame_config(
+         ? wuffs_base__error__disabled_by_previous_error
+         : wuffs_base__error__initialize_not_called);
+   }
+-  if (!a_src) {
++  if (!a_dst || !a_src) {
+     self->private_impl.magic = WUFFS_BASE__DISABLED;
+     return wuffs_base__make_status(wuffs_base__error__bad_argument);
+   }
+   if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 3)) {
++      (self->private_impl.active_coroutine != 1)) {
+     self->private_impl.magic = WUFFS_BASE__DISABLED;
+     return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+   }
+@@ -37297,17 +38647,17 @@ wuffs_gif__decoder__decode_frame_config(
+ 
+   wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0];
++  uint32_t coro_susp_point = self->private_impl.p_transform_io;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+     while (true) {
+       {
+-        wuffs_base__status t_0 = wuffs_gif__decoder__do_decode_frame_config(self, a_dst, a_src);
++        wuffs_base__status t_0 = wuffs_deflate__decoder__do_transform_io(self, a_dst, a_src, a_workbuf);
+         v_status = t_0;
+       }
+       if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_gif__error__truncated_input);
++        status = wuffs_base__make_status(wuffs_deflate__error__truncated_input);
+         goto exit;
+       }
+       status = v_status;
+@@ -37315,14 +38665,14 @@ wuffs_gif__decoder__decode_frame_config(
+     }
+ 
+     ok:
+-    self->private_impl.p_decode_frame_config[0] = 0;
++    self->private_impl.p_transform_io = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
++  self->private_impl.p_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
+ 
+   goto exit;
+   exit:
+@@ -37332,403 +38682,103 @@ wuffs_gif__decoder__decode_frame_config(
+   return status;
+ }
+ 
+-// -------- func gif.decoder.do_decode_frame_config
++// -------- func deflate.decoder.do_transform_io
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_gif__decoder__do_decode_frame_config(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__frame_config* a_dst,
+-    wuffs_base__io_buffer* a_src) {
++wuffs_deflate__decoder__do_transform_io(
++    wuffs_deflate__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t v_background_color = 0;
+-  uint8_t v_flags = 0;
++  uint64_t v_mark = 0;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
++  uint8_t* iop_a_dst = NULL;
++  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
++    }
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0];
+-  if (coro_susp_point) {
+-    v_background_color = self->private_data.s_do_decode_frame_config[0].v_background_color;
+-  }
++  uint32_t coro_susp_point = self->private_impl.p_do_transform_io;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    self->private_impl.f_dirty_max_excl_y = 0u;
+-    if ((self->private_impl.f_call_sequence & 16u) != 0u) {
+-      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
+-      goto exit;
+-    } else if (self->private_impl.f_call_sequence == 32u) {
+-    } else if (self->private_impl.f_call_sequence < 32u) {
+-      if (a_src) {
+-        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++    self->private_impl.choosy_decode_huffman_fast64 = (
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
++        wuffs_base__cpu_arch__have_x86_bmi2() ? &wuffs_deflate__decoder__decode_huffman_bmi2 :
++#endif
++        self->private_impl.choosy_decode_huffman_fast64);
++    while (true) {
++      v_mark = ((uint64_t)(iop_a_dst - io0_a_dst));
++      {
++        if (a_dst) {
++          a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++        }
++        wuffs_base__status t_0 = wuffs_deflate__decoder__decode_blocks(self, a_dst, a_src);
++        v_status = t_0;
++        if (a_dst) {
++          iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
++        }
+       }
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      status = wuffs_gif__decoder__do_decode_image_config(self, NULL, a_src);
+-      if (a_src) {
+-        iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-      }
+-      if (status.repr) {
+-        goto suspend;
+-      }
+-    } else if (self->private_impl.f_call_sequence == 40u) {
+-      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
+-        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
+-        goto exit;
+-      }
+-    } else if (self->private_impl.f_call_sequence == 64u) {
+-      if (a_src) {
+-        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-      }
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-      status = wuffs_gif__decoder__skip_frame(self, a_src);
+-      if (a_src) {
+-        iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-      }
+-      if (status.repr) {
+-        goto suspend;
+-      }
+-      if (self->private_impl.f_call_sequence >= 96u) {
+-        status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-        goto ok;
+-      }
+-    } else {
+-      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-      goto ok;
+-    }
+-    if ((self->private_impl.f_num_decoded_frame_configs_value > 0u) || (self->private_impl.f_call_sequence == 40u)) {
+-      if (a_src) {
+-        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-      }
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-      status = wuffs_gif__decoder__decode_up_to_id_part1(self, a_src);
+-      if (a_src) {
+-        iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-      }
+-      if (status.repr) {
+-        goto suspend;
+-      }
+-      if (self->private_impl.f_call_sequence >= 96u) {
+-        status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-        goto ok;
+-      }
+-    }
+-    v_background_color = self->private_impl.f_black_color_u32_argb_premul;
+-    if ( ! self->private_impl.f_gc_has_transparent_index) {
+-      v_background_color = self->private_impl.f_background_color_u32_argb_premul;
+-      if (self->private_impl.f_quirks[1u] && (self->private_impl.f_num_decoded_frame_configs_value == 0u)) {
+-        while (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
+-        }
+-        v_flags = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-        if ((v_flags & 128u) != 0u) {
+-          v_background_color = self->private_impl.f_black_color_u32_argb_premul;
++      if ( ! wuffs_base__status__is_suspension(&v_status)) {
++        status = v_status;
++        if (wuffs_base__status__is_error(&status)) {
++          goto exit;
++        } else if (wuffs_base__status__is_suspension(&status)) {
++          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++          goto exit;
+         }
++        goto ok;
+       }
+-    }
+-    if (a_dst != NULL) {
+-      wuffs_base__frame_config__set(
+-          a_dst,
+-          wuffs_base__utility__make_rect_ie_u32(
+-          wuffs_base__u32__min(self->private_impl.f_frame_rect_x0, self->private_impl.f_width),
+-          wuffs_base__u32__min(self->private_impl.f_frame_rect_y0, self->private_impl.f_height),
+-          wuffs_base__u32__min(self->private_impl.f_frame_rect_x1, self->private_impl.f_width),
+-          wuffs_base__u32__min(self->private_impl.f_frame_rect_y1, self->private_impl.f_height)),
+-          ((wuffs_base__flicks)(self->private_impl.f_gc_duration)),
+-          self->private_impl.f_num_decoded_frame_configs_value,
+-          self->private_impl.f_frame_config_io_position,
+-          self->private_impl.f_gc_disposal,
+-          ! self->private_impl.f_gc_has_transparent_index,
+-          false,
+-          v_background_color);
+-    }
+-    wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frame_configs_value, 1u);
+-    self->private_impl.f_call_sequence = 64u;
+-
+-    ok:
+-    self->private_impl.p_do_decode_frame_config[0] = 0;
+-    goto exit;
+-  }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_do_decode_frame_config[0].v_background_color = v_background_color;
+-
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
+-
+-  return status;
+-}
+-
+-// -------- func gif.decoder.skip_frame
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_gif__decoder__skip_frame(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  uint8_t v_flags = 0;
+-  uint8_t v_lw = 0;
+-
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
+-
+-  uint32_t coro_susp_point = self->private_impl.p_skip_frame[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_0 = *iop_a_src++;
+-      v_flags = t_0;
+-    }
+-    if ((v_flags & 128u) != 0u) {
+-      self->private_data.s_skip_frame[0].scratch = (((uint32_t)(3u)) << (1u + (v_flags & 7u)));
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-      if (self->private_data.s_skip_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-        self->private_data.s_skip_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-        iop_a_src = io2_a_src;
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      iop_a_src += self->private_data.s_skip_frame[0].scratch;
+-    }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_1 = *iop_a_src++;
+-      v_lw = t_1;
+-    }
+-    if (v_lw > 8u) {
+-      status = wuffs_base__make_status(wuffs_gif__error__bad_literal_width);
+-      goto exit;
+-    }
+-    if (a_src) {
+-      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-    }
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-    status = wuffs_gif__decoder__skip_blocks(self, a_src);
+-    if (a_src) {
+-      iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-    }
+-    if (status.repr) {
+-      goto suspend;
+-    }
+-    if (self->private_impl.f_quirks[0u]) {
+-      self->private_impl.f_delayed_num_decoded_frames = true;
+-    } else {
+-      wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
+-    }
+-    wuffs_gif__decoder__reset_gc(self);
+-    self->private_impl.f_call_sequence = 32u;
+-
+-    goto ok;
+-    ok:
+-    self->private_impl.p_skip_frame[0] = 0;
+-    goto exit;
+-  }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_skip_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
+-
+-  return status;
+-}
+-
+-// -------- func gif.decoder.decode_frame
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_gif__decoder__decode_frame(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-  if (!a_dst || !a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 4)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+-  }
+-  self->private_impl.active_coroutine = 0;
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-
+-  uint32_t coro_susp_point = self->private_impl.p_decode_frame[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    while (true) {
+-      {
+-        wuffs_base__status t_0 = wuffs_gif__decoder__do_decode_frame(self,
+-            a_dst,
+-            a_src,
+-            a_blend,
+-            a_workbuf,
+-            a_opts);
+-        v_status = t_0;
+-      }
+-      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_gif__error__truncated_input);
+-        goto exit;
+-      }
++      wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_transformed_history_count, wuffs_private_impl__io__count_since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst))));
++      wuffs_deflate__decoder__add_history(self, wuffs_private_impl__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
+       status = v_status;
+       WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+     }
+ 
+     ok:
+-    self->private_impl.p_decode_frame[0] = 0;
++    self->private_impl.p_do_transform_io = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 4 : 0;
++  self->private_impl.p_do_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+   goto exit;
+   exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-  }
+-  return status;
+-}
+-
+-// -------- func gif.decoder.do_decode_frame
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_gif__decoder__do_decode_frame(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    if (self->private_impl.f_call_sequence == 64u) {
+-    } else if (self->private_impl.f_call_sequence < 64u) {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      status = wuffs_gif__decoder__do_decode_frame_config(self, NULL, a_src);
+-      if (status.repr) {
+-        goto suspend;
+-      }
+-    } else {
+-      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-      goto ok;
+-    }
+-    if (self->private_impl.f_quirks[5u] && ((self->private_impl.f_frame_rect_x0 == self->private_impl.f_frame_rect_x1) || (self->private_impl.f_frame_rect_y0 == self->private_impl.f_frame_rect_y1))) {
+-      status = wuffs_base__make_status(wuffs_gif__error__bad_frame_size);
+-      goto exit;
+-    }
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-    status = wuffs_gif__decoder__decode_id_part1(self, a_dst, a_src, a_blend);
+-    if (status.repr) {
+-      goto suspend;
+-    }
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-    status = wuffs_gif__decoder__decode_id_part2(self, a_dst, a_src, a_workbuf);
+-    if (status.repr) {
+-      goto suspend;
+-    }
+-    wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
+-    wuffs_gif__decoder__reset_gc(self);
+-    self->private_impl.f_call_sequence = 32u;
+-
+-    ok:
+-    self->private_impl.p_do_decode_frame[0] = 0;
+-    goto exit;
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+   }
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-
+-  goto exit;
+-  exit:
+   return status;
+ }
+ 
+-// -------- func gif.decoder.reset_gc
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_gif__decoder__reset_gc(
+-    wuffs_gif__decoder* self) {
+-  self->private_impl.f_gc_has_transparent_index = false;
+-  self->private_impl.f_gc_transparent_index = 0u;
+-  self->private_impl.f_gc_disposal = 0u;
+-  self->private_impl.f_gc_duration = 0u;
+-  return wuffs_base__make_empty_struct();
+-}
+-
+-// -------- func gif.decoder.decode_up_to_id_part1
++// -------- func deflate.decoder.decode_blocks
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_gif__decoder__decode_up_to_id_part1(
+-    wuffs_gif__decoder* self,
++wuffs_deflate__decoder__decode_blocks(
++    wuffs_deflate__decoder* self,
++    wuffs_base__io_buffer* a_dst,
+     wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint8_t v_block_type = 0;
++  uint32_t v_final = 0;
++  uint32_t v_b0 = 0;
++  uint32_t v_type = 0;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -37741,71 +38791,125 @@ wuffs_gif__decoder__decode_up_to_id_part1(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_up_to_id_part1[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_blocks;
++  if (coro_susp_point) {
++    v_final = self->private_data.s_decode_blocks.v_final;
++  }
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if ((self->private_impl.f_frame_config_io_position == 0u) || (self->private_impl.f_num_decoded_frame_configs_value > 0u)) {
+-      self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
+-    }
+-    while (true) {
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
++    label__outer__continue:;
++    while (v_final == 0u) {
++      while (self->private_impl.f_n_bits < 3u) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint32_t t_0 = *iop_a_src++;
++          v_b0 = t_0;
+         }
+-        uint8_t t_0 = *iop_a_src++;
+-        v_block_type = t_0;
++        self->private_impl.f_bits |= (v_b0 << (self->private_impl.f_n_bits & 3u));
++        self->private_impl.f_n_bits = ((self->private_impl.f_n_bits & 3u) + 8u);
+       }
+-      if (v_block_type == 33u) {
++      v_final = (self->private_impl.f_bits & 1u);
++      v_type = ((self->private_impl.f_bits >> 1u) & 3u);
++      self->private_impl.f_bits >>= 3u;
++      self->private_impl.f_n_bits -= 3u;
++      if (v_type == 0u) {
+         if (a_src) {
+           a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+         }
+         WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-        status = wuffs_gif__decoder__decode_extension(self, a_src);
++        status = wuffs_deflate__decoder__decode_uncompressed(self, a_dst, a_src);
+         if (a_src) {
+           iop_a_src = a_src->data.ptr + a_src->meta.ri;
+         }
+         if (status.repr) {
+           goto suspend;
+         }
+-      } else if (v_block_type == 44u) {
+-        if (self->private_impl.f_delayed_num_decoded_frames) {
+-          self->private_impl.f_delayed_num_decoded_frames = false;
+-          wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
++        continue;
++      } else if (v_type == 1u) {
++        v_status = wuffs_deflate__decoder__init_fixed_huffman(self);
++        if ( ! wuffs_base__status__is_ok(&v_status)) {
++          status = v_status;
++          if (wuffs_base__status__is_error(&status)) {
++            goto exit;
++          } else if (wuffs_base__status__is_suspension(&status)) {
++            status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++            goto exit;
++          }
++          goto ok;
+         }
++      } else if (v_type == 2u) {
+         if (a_src) {
+           a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+         }
+         WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-        status = wuffs_gif__decoder__decode_id_part0(self, a_src);
++        status = wuffs_deflate__decoder__init_dynamic_huffman(self, a_src);
+         if (a_src) {
+           iop_a_src = a_src->data.ptr + a_src->meta.ri;
+         }
+         if (status.repr) {
+           goto suspend;
+         }
+-        break;
+       } else {
+-        if (self->private_impl.f_delayed_num_decoded_frames) {
+-          self->private_impl.f_delayed_num_decoded_frames = false;
+-          wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
++        status = wuffs_base__make_status(wuffs_deflate__error__bad_block);
++        goto exit;
++      }
++      self->private_impl.f_end_of_block = false;
++      while (true) {
++        if (sizeof(void*) == 4u) {
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          v_status = wuffs_deflate__decoder__decode_huffman_fast32(self, a_dst, a_src);
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++        } else {
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          v_status = wuffs_deflate__decoder__decode_huffman_fast64(self, a_dst, a_src);
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++        }
++        if (wuffs_base__status__is_error(&v_status)) {
++          status = v_status;
++          goto exit;
++        }
++        if (self->private_impl.f_end_of_block) {
++          goto label__outer__continue;
++        }
++        if (a_src) {
++          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++        }
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++        status = wuffs_deflate__decoder__decode_huffman_slow(self, a_dst, a_src);
++        if (a_src) {
++          iop_a_src = a_src->data.ptr + a_src->meta.ri;
++        }
++        if (status.repr) {
++          goto suspend;
++        }
++        if (self->private_impl.f_end_of_block) {
++          goto label__outer__continue;
+         }
+-        self->private_impl.f_call_sequence = 96u;
+-        break;
+       }
+     }
+ 
+-    goto ok;
+     ok:
+-    self->private_impl.p_decode_up_to_id_part1[0] = 0;
++    self->private_impl.p_decode_blocks = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_up_to_id_part1[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.p_decode_blocks = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_blocks.v_final = v_final;
+ 
+   goto exit;
+   exit:
+@@ -37816,18 +38920,32 @@ wuffs_gif__decoder__decode_up_to_id_part1(
+   return status;
+ }
+ 
+-// -------- func gif.decoder.decode_header
++// -------- func deflate.decoder.decode_uncompressed
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_gif__decoder__decode_header(
+-    wuffs_gif__decoder* self,
++wuffs_deflate__decoder__decode_uncompressed(
++    wuffs_deflate__decoder* self,
++    wuffs_base__io_buffer* a_dst,
+     wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint8_t v_c[6] = {0};
+-  uint32_t v_i = 0;
++  uint32_t v_length = 0;
++  uint32_t v_n_copied = 0;
+ 
++  uint8_t* iop_a_dst = NULL;
++  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
++    }
++  }
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -37839,50 +38957,85 @@ wuffs_gif__decoder__decode_header(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_header[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_uncompressed;
+   if (coro_susp_point) {
+-    memcpy(v_c, self->private_data.s_decode_header[0].v_c, sizeof(v_c));
+-    v_i = self->private_data.s_decode_header[0].v_i;
++    v_length = self->private_data.s_decode_uncompressed.v_length;
+   }
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    while (v_i < 6u) {
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
++    if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
++      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
++      goto exit;
++    }
++    self->private_impl.f_n_bits = 0u;
++    self->private_impl.f_bits = 0u;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      uint32_t t_0;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_decode_uncompressed.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_uncompressed.scratch;
++          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
++          *scratch <<= 8;
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
++          if (num_bits_0 == 24) {
++            t_0 = ((uint32_t)(*scratch));
++            break;
++          }
++          num_bits_0 += 8u;
++          *scratch |= ((uint64_t)(num_bits_0)) << 56;
+         }
+-        uint8_t t_0 = *iop_a_src++;
+-        v_c[v_i] = t_0;
+       }
+-      v_i += 1u;
++      v_length = t_0;
+     }
+-    if ((v_c[0u] != 71u) ||
+-        (v_c[1u] != 73u) ||
+-        (v_c[2u] != 70u) ||
+-        (v_c[3u] != 56u) ||
+-        ((v_c[4u] != 55u) && (v_c[4u] != 57u)) ||
+-        (v_c[5u] != 97u)) {
+-      status = wuffs_base__make_status(wuffs_gif__error__bad_header);
++    if ((((v_length) & 0xFFFFu) + ((v_length) >> (32u - 16u))) != 65535u) {
++      status = wuffs_base__make_status(wuffs_deflate__error__inconsistent_stored_block_length);
+       goto exit;
+     }
++    v_length = ((v_length) & 0xFFFFu);
++    while (true) {
++      v_n_copied = wuffs_private_impl__io_writer__limited_copy_u32_from_reader(
++          &iop_a_dst, io2_a_dst,v_length, &iop_a_src, io2_a_src);
++      if (v_length <= v_n_copied) {
++        status = wuffs_base__make_status(NULL);
++        goto ok;
++      }
++      v_length -= v_n_copied;
++      if (((uint64_t)(io2_a_dst - iop_a_dst)) == 0u) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
++      } else {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
++      }
++    }
+ 
+-    goto ok;
+     ok:
+-    self->private_impl.p_decode_header[0] = 0;
++    self->private_impl.p_decode_uncompressed = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_header[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  memcpy(self->private_data.s_decode_header[0].v_c, v_c, sizeof(v_c));
+-  self->private_data.s_decode_header[0].v_i = v_i;
++  self->private_impl.p_decode_uncompressed = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_uncompressed.v_length = v_length;
+ 
+   goto exit;
+   exit:
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++  }
+   if (a_src && a_src->data.ptr) {
+     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+@@ -37890,21 +39043,80 @@ wuffs_gif__decoder__decode_header(
+   return status;
+ }
+ 
+-// -------- func gif.decoder.decode_lsd
++// -------- func deflate.decoder.init_fixed_huffman
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_gif__decoder__decode_lsd(
+-    wuffs_gif__decoder* self,
++wuffs_deflate__decoder__init_fixed_huffman(
++    wuffs_deflate__decoder* self) {
++  uint32_t v_i = 0;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  while (v_i < 144u) {
++    self->private_data.f_code_lengths[v_i] = 8u;
++    v_i += 1u;
++  }
++  while (v_i < 256u) {
++    self->private_data.f_code_lengths[v_i] = 9u;
++    v_i += 1u;
++  }
++  while (v_i < 280u) {
++    self->private_data.f_code_lengths[v_i] = 7u;
++    v_i += 1u;
++  }
++  while (v_i < 288u) {
++    self->private_data.f_code_lengths[v_i] = 8u;
++    v_i += 1u;
++  }
++  while (v_i < 320u) {
++    self->private_data.f_code_lengths[v_i] = 5u;
++    v_i += 1u;
++  }
++  v_status = wuffs_deflate__decoder__init_huff(self,
++      0u,
++      0u,
++      288u,
++      257u);
++  if (wuffs_base__status__is_error(&v_status)) {
++    return v_status;
++  }
++  v_status = wuffs_deflate__decoder__init_huff(self,
++      1u,
++      288u,
++      320u,
++      0u);
++  if (wuffs_base__status__is_error(&v_status)) {
++    return v_status;
++  }
++  return wuffs_base__make_status(NULL);
++}
++
++// -------- func deflate.decoder.init_dynamic_huffman
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_deflate__decoder__init_dynamic_huffman(
++    wuffs_deflate__decoder* self,
+     wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint8_t v_flags = 0;
+-  uint8_t v_background_color_index = 0;
+-  uint32_t v_num_palette_entries = 0;
++  uint32_t v_bits = 0;
++  uint32_t v_n_bits = 0;
++  uint32_t v_b0 = 0;
++  uint32_t v_n_lit = 0;
++  uint32_t v_n_dist = 0;
++  uint32_t v_n_clen = 0;
+   uint32_t v_i = 0;
+-  uint32_t v_j = 0;
+-  uint32_t v_argb = 0;
++  uint32_t v_b1 = 0;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++  uint32_t v_mask = 0;
++  uint32_t v_table_entry = 0;
++  uint32_t v_table_entry_n_bits = 0;
++  uint32_t v_b2 = 0;
++  uint32_t v_n_extra_bits = 0;
++  uint8_t v_rep_symbol = 0;
++  uint32_t v_rep_count = 0;
++  uint32_t v_b3 = 0;
+ 
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -37917,172 +39129,215 @@ wuffs_gif__decoder__decode_lsd(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_lsd[0];
++  uint32_t coro_susp_point = self->private_impl.p_init_dynamic_huffman;
+   if (coro_susp_point) {
+-    v_flags = self->private_data.s_decode_lsd[0].v_flags;
+-    v_background_color_index = self->private_data.s_decode_lsd[0].v_background_color_index;
+-    v_num_palette_entries = self->private_data.s_decode_lsd[0].v_num_palette_entries;
+-    v_i = self->private_data.s_decode_lsd[0].v_i;
++    v_bits = self->private_data.s_init_dynamic_huffman.v_bits;
++    v_n_bits = self->private_data.s_init_dynamic_huffman.v_n_bits;
++    v_n_lit = self->private_data.s_init_dynamic_huffman.v_n_lit;
++    v_n_dist = self->private_data.s_init_dynamic_huffman.v_n_dist;
++    v_n_clen = self->private_data.s_init_dynamic_huffman.v_n_clen;
++    v_i = self->private_data.s_init_dynamic_huffman.v_i;
++    v_mask = self->private_data.s_init_dynamic_huffman.v_mask;
++    v_n_extra_bits = self->private_data.s_init_dynamic_huffman.v_n_extra_bits;
++    v_rep_symbol = self->private_data.s_init_dynamic_huffman.v_rep_symbol;
++    v_rep_count = self->private_data.s_init_dynamic_huffman.v_rep_count;
+   }
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      uint32_t t_0;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-        t_0 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-        iop_a_src += 2;
+-      } else {
+-        self->private_data.s_decode_lsd[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-        while (true) {
++    v_bits = self->private_impl.f_bits;
++    v_n_bits = self->private_impl.f_n_bits;
++    while (v_n_bits < 14u) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint32_t t_0 = *iop_a_src++;
++        v_b0 = t_0;
++      }
++      v_bits |= (v_b0 << v_n_bits);
++      v_n_bits += 8u;
++    }
++    v_n_lit = (((v_bits) & 0x1Fu) + 257u);
++    if (v_n_lit > 286u) {
++      status = wuffs_base__make_status(wuffs_deflate__error__bad_literal_length_code_count);
++      goto exit;
++    }
++    v_bits >>= 5u;
++    v_n_dist = (((v_bits) & 0x1Fu) + 1u);
++    if (v_n_dist > 30u) {
++      status = wuffs_base__make_status(wuffs_deflate__error__bad_distance_code_count);
++      goto exit;
++    }
++    v_bits >>= 5u;
++    v_n_clen = (((v_bits) & 0xFu) + 4u);
++    v_bits >>= 4u;
++    v_n_bits -= 14u;
++    v_i = 0u;
++    while (v_i < v_n_clen) {
++      while (v_n_bits < 3u) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint64_t* scratch = &self->private_data.s_decode_lsd[0].scratch;
+-          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
+-          *scratch <<= 8;
+-          *scratch >>= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
+-          if (num_bits_0 == 8) {
+-            t_0 = ((uint32_t)(*scratch));
+-            break;
+-          }
+-          num_bits_0 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_0)) << 56;
++          uint32_t t_1 = *iop_a_src++;
++          v_b1 = t_1;
+         }
++        v_bits |= (v_b1 << v_n_bits);
++        v_n_bits += 8u;
+       }
+-      self->private_impl.f_width = t_0;
++      self->private_data.f_code_lengths[WUFFS_DEFLATE__CODE_ORDER[v_i]] = ((uint8_t)((v_bits & 7u)));
++      v_bits >>= 3u;
++      v_n_bits -= 3u;
++      v_i += 1u;
+     }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-      uint32_t t_1;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-        t_1 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-        iop_a_src += 2;
+-      } else {
+-        self->private_data.s_decode_lsd[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-        while (true) {
++    while (v_i < 19u) {
++      self->private_data.f_code_lengths[WUFFS_DEFLATE__CODE_ORDER[v_i]] = 0u;
++      v_i += 1u;
++    }
++    v_status = wuffs_deflate__decoder__init_huff(self,
++        0u,
++        0u,
++        19u,
++        4095u);
++    if (wuffs_base__status__is_error(&v_status)) {
++      status = v_status;
++      goto exit;
++    }
++    v_mask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u);
++    v_i = 0u;
++    while (v_i < (v_n_lit + v_n_dist)) {
++      while (true) {
++        v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_mask)];
++        v_table_entry_n_bits = (v_table_entry & 15u);
++        if (v_n_bits >= v_table_entry_n_bits) {
++          v_bits >>= v_table_entry_n_bits;
++          v_n_bits -= v_table_entry_n_bits;
++          break;
++        }
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint64_t* scratch = &self->private_data.s_decode_lsd[0].scratch;
+-          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
+-          *scratch <<= 8;
+-          *scratch >>= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
+-          if (num_bits_1 == 8) {
+-            t_1 = ((uint32_t)(*scratch));
+-            break;
+-          }
+-          num_bits_1 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_1)) << 56;
++          uint32_t t_2 = *iop_a_src++;
++          v_b2 = t_2;
+         }
++        v_bits |= (v_b2 << v_n_bits);
++        v_n_bits += 8u;
+       }
+-      self->private_impl.f_height = t_1;
+-    }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
++      if ((v_table_entry >> 24u) != 128u) {
++        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++        goto exit;
+       }
+-      uint8_t t_2 = *iop_a_src++;
+-      v_flags = t_2;
+-    }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
++      v_table_entry = ((v_table_entry >> 8u) & 255u);
++      if (v_table_entry < 16u) {
++        self->private_data.f_code_lengths[v_i] = ((uint8_t)(v_table_entry));
++        v_i += 1u;
++        continue;
+       }
+-      uint8_t t_3 = *iop_a_src++;
+-      v_background_color_index = t_3;
+-    }
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+-    if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-      goto suspend;
+-    }
+-    iop_a_src++;
+-    v_i = 0u;
+-    self->private_impl.f_has_global_palette = ((v_flags & 128u) != 0u);
+-    if (self->private_impl.f_has_global_palette) {
+-      v_num_palette_entries = (((uint32_t)(1u)) << (1u + (v_flags & 7u)));
+-      while (v_i < v_num_palette_entries) {
++      v_n_extra_bits = 0u;
++      v_rep_symbol = 0u;
++      v_rep_count = 0u;
++      if (v_table_entry == 16u) {
++        v_n_extra_bits = 2u;
++        if (v_i <= 0u) {
++          status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_length_repetition);
++          goto exit;
++        }
++        v_rep_symbol = ((uint8_t)(self->private_data.f_code_lengths[(v_i - 1u)] & 15u));
++        v_rep_count = 3u;
++      } else if (v_table_entry == 17u) {
++        v_n_extra_bits = 3u;
++        v_rep_symbol = 0u;
++        v_rep_count = 3u;
++      } else if (v_table_entry == 18u) {
++        v_n_extra_bits = 7u;
++        v_rep_symbol = 0u;
++        v_rep_count = 11u;
++      } else {
++        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++        goto exit;
++      }
++      while (v_n_bits < v_n_extra_bits) {
+         {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
+-          uint32_t t_4;
+-          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
+-            t_4 = ((uint32_t)(wuffs_base__peek_u24be__no_bounds_check(iop_a_src)));
+-            iop_a_src += 3;
+-          } else {
+-            self->private_data.s_decode_lsd[0].scratch = 0;
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
+-            while (true) {
+-              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                goto suspend;
+-              }
+-              uint64_t* scratch = &self->private_data.s_decode_lsd[0].scratch;
+-              uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFFu));
+-              *scratch >>= 8;
+-              *scratch <<= 8;
+-              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4);
+-              if (num_bits_4 == 16) {
+-                t_4 = ((uint32_t)(*scratch >> 40));
+-                break;
+-              }
+-              num_bits_4 += 8u;
+-              *scratch |= ((uint64_t)(num_bits_4));
+-            }
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
+           }
+-          v_argb = t_4;
++          uint32_t t_3 = *iop_a_src++;
++          v_b3 = t_3;
+         }
+-        v_argb |= 4278190080u;
+-        self->private_data.f_palettes[0u][((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u)));
+-        self->private_data.f_palettes[0u][((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u)));
+-        self->private_data.f_palettes[0u][((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u)));
+-        self->private_data.f_palettes[0u][((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u)));
+-        v_i += 1u;
++        v_bits |= (v_b3 << v_n_bits);
++        v_n_bits += 8u;
+       }
+-      if (self->private_impl.f_quirks[2u]) {
+-        if ((v_background_color_index != 0u) && (((uint32_t)(v_background_color_index)) < v_num_palette_entries)) {
+-          v_j = (4u * ((uint32_t)(v_background_color_index)));
+-          self->private_impl.f_background_color_u32_argb_premul = ((((uint32_t)(self->private_data.f_palettes[0u][(v_j + 0u)])) << 0u) |
+-              (((uint32_t)(self->private_data.f_palettes[0u][(v_j + 1u)])) << 8u) |
+-              (((uint32_t)(self->private_data.f_palettes[0u][(v_j + 2u)])) << 16u) |
+-              (((uint32_t)(self->private_data.f_palettes[0u][(v_j + 3u)])) << 24u));
+-        } else {
+-          self->private_impl.f_background_color_u32_argb_premul = 77u;
++      v_rep_count += ((v_bits) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U32(v_n_extra_bits));
++      v_bits >>= v_n_extra_bits;
++      v_n_bits -= v_n_extra_bits;
++      while (v_rep_count > 0u) {
++        if (v_i >= (v_n_lit + v_n_dist)) {
++          status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_length_count);
++          goto exit;
+         }
++        self->private_data.f_code_lengths[v_i] = v_rep_symbol;
++        v_i += 1u;
++        v_rep_count -= 1u;
+       }
+     }
+-    while (v_i < 256u) {
+-      self->private_data.f_palettes[0u][((4u * v_i) + 0u)] = 0u;
+-      self->private_data.f_palettes[0u][((4u * v_i) + 1u)] = 0u;
+-      self->private_data.f_palettes[0u][((4u * v_i) + 2u)] = 0u;
+-      self->private_data.f_palettes[0u][((4u * v_i) + 3u)] = 255u;
+-      v_i += 1u;
++    if (v_i != (v_n_lit + v_n_dist)) {
++      status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_length_count);
++      goto exit;
++    }
++    if (self->private_data.f_code_lengths[256u] == 0u) {
++      status = wuffs_base__make_status(wuffs_deflate__error__missing_end_of_block_code);
++      goto exit;
++    }
++    v_status = wuffs_deflate__decoder__init_huff(self,
++        0u,
++        0u,
++        v_n_lit,
++        257u);
++    if (wuffs_base__status__is_error(&v_status)) {
++      status = v_status;
++      goto exit;
++    }
++    v_status = wuffs_deflate__decoder__init_huff(self,
++        1u,
++        v_n_lit,
++        (v_n_lit + v_n_dist),
++        0u);
++    if (wuffs_base__status__is_error(&v_status)) {
++      status = v_status;
++      goto exit;
+     }
++    self->private_impl.f_bits = v_bits;
++    self->private_impl.f_n_bits = v_n_bits;
+ 
+     goto ok;
+     ok:
+-    self->private_impl.p_decode_lsd[0] = 0;
++    self->private_impl.p_init_dynamic_huffman = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_lsd[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_decode_lsd[0].v_flags = v_flags;
+-  self->private_data.s_decode_lsd[0].v_background_color_index = v_background_color_index;
+-  self->private_data.s_decode_lsd[0].v_num_palette_entries = v_num_palette_entries;
+-  self->private_data.s_decode_lsd[0].v_i = v_i;
++  self->private_impl.p_init_dynamic_huffman = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_init_dynamic_huffman.v_bits = v_bits;
++  self->private_data.s_init_dynamic_huffman.v_n_bits = v_n_bits;
++  self->private_data.s_init_dynamic_huffman.v_n_lit = v_n_lit;
++  self->private_data.s_init_dynamic_huffman.v_n_dist = v_n_dist;
++  self->private_data.s_init_dynamic_huffman.v_n_clen = v_n_clen;
++  self->private_data.s_init_dynamic_huffman.v_i = v_i;
++  self->private_data.s_init_dynamic_huffman.v_mask = v_mask;
++  self->private_data.s_init_dynamic_huffman.v_n_extra_bits = v_n_extra_bits;
++  self->private_data.s_init_dynamic_huffman.v_rep_symbol = v_rep_symbol;
++  self->private_data.s_init_dynamic_huffman.v_rep_count = v_rep_count;
+ 
+   goto exit;
+   exit:
+@@ -38093,185 +39348,299 @@ wuffs_gif__decoder__decode_lsd(
+   return status;
+ }
+ 
+-// -------- func gif.decoder.decode_extension
++// -------- func deflate.decoder.init_huff
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_gif__decoder__decode_extension(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  uint8_t v_label = 0;
++wuffs_deflate__decoder__init_huff(
++    wuffs_deflate__decoder* self,
++    uint32_t a_which,
++    uint32_t a_n_codes0,
++    uint32_t a_n_codes1,
++    uint32_t a_base_symbol) {
++  uint16_t v_counts[16] = {0};
++  uint32_t v_i = 0;
++  uint32_t v_remaining = 0;
++  uint16_t v_offsets[16] = {0};
++  uint32_t v_n_symbols = 0;
++  uint32_t v_count = 0;
++  uint16_t v_symbols[320] = {0};
++  uint32_t v_min_cl = 0;
++  uint32_t v_max_cl = 0;
++  uint32_t v_initial_high_bits = 0;
++  uint32_t v_prev_cl = 0;
++  uint32_t v_prev_redirect_key = 0;
++  uint32_t v_top = 0;
++  uint32_t v_next_top = 0;
++  uint32_t v_code = 0;
++  uint32_t v_key = 0;
++  uint32_t v_value = 0;
++  uint32_t v_cl = 0;
++  uint32_t v_redirect_key = 0;
++  uint32_t v_j = 0;
++  uint32_t v_reversed_key = 0;
++  uint32_t v_symbol = 0;
++  uint32_t v_high_bits = 0;
++  uint32_t v_delta = 0;
+ 
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
++  v_i = a_n_codes0;
++  while (v_i < a_n_codes1) {
++    if (v_counts[((uint8_t)(self->private_data.f_code_lengths[v_i] & 15u))] >= 320u) {
++      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++    }
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++    v_counts[((uint8_t)(self->private_data.f_code_lengths[v_i] & 15u))] += 1u;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++    v_i += 1u;
+   }
+-
+-  uint32_t coro_susp_point = self->private_impl.p_decode_extension[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_0 = *iop_a_src++;
+-      v_label = t_0;
++  if ((((uint32_t)(v_counts[0u])) + a_n_codes0) == a_n_codes1) {
++    return wuffs_base__make_status(wuffs_deflate__error__no_huffman_codes);
++  }
++  v_remaining = 1u;
++  v_i = 1u;
++  while (v_i <= 15u) {
++    if (v_remaining > 1073741824u) {
++      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+     }
+-    if (v_label == 249u) {
+-      if (a_src) {
+-        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-      }
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-      status = wuffs_gif__decoder__decode_gc(self, a_src);
+-      if (a_src) {
+-        iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-      }
+-      if (status.repr) {
+-        goto suspend;
+-      }
+-      status = wuffs_base__make_status(NULL);
+-      goto ok;
+-    } else if (v_label == 255u) {
+-      if (a_src) {
+-        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-      }
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-      status = wuffs_gif__decoder__decode_ae(self, a_src);
+-      if (a_src) {
+-        iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-      }
+-      if (status.repr) {
+-        goto suspend;
++    v_remaining <<= 1u;
++    if (v_remaining < ((uint32_t)(v_counts[v_i]))) {
++      return wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_over_subscribed);
++    }
++    v_remaining -= ((uint32_t)(v_counts[v_i]));
++    v_i += 1u;
++  }
++  if (v_remaining != 0u) {
++    if ((a_which == 1u) && (v_counts[1u] == 1u) && ((((uint32_t)(v_counts[0u])) + a_n_codes0 + 1u) == a_n_codes1)) {
++      v_i = 0u;
++      while (v_i <= 29u) {
++        if (self->private_data.f_code_lengths[(a_n_codes0 + v_i)] == 1u) {
++          self->private_impl.f_n_huffs_bits[1u] = 1u;
++          self->private_data.f_huffs[1u][0u] = (WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[v_i] | 1u);
++          self->private_data.f_huffs[1u][1u] = (WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[31u] | 1u);
++          return wuffs_base__make_status(NULL);
++        }
++        v_i += 1u;
+       }
+-      status = wuffs_base__make_status(NULL);
+-      goto ok;
+     }
+-    if (a_src) {
+-      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++    return wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_under_subscribed);
++  }
++  v_i = 1u;
++  while (v_i <= 15u) {
++    v_offsets[v_i] = ((uint16_t)(v_n_symbols));
++    v_count = ((uint32_t)(v_counts[v_i]));
++    if (v_n_symbols > (320u - v_count)) {
++      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+     }
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-    status = wuffs_gif__decoder__skip_blocks(self, a_src);
+-    if (a_src) {
+-      iop_a_src = a_src->data.ptr + a_src->meta.ri;
++    v_n_symbols = (v_n_symbols + v_count);
++    v_i += 1u;
++  }
++  if (v_n_symbols > 288u) {
++    return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++  }
++  v_i = a_n_codes0;
++  while (v_i < a_n_codes1) {
++    if (v_i < a_n_codes0) {
++      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+     }
+-    if (status.repr) {
+-      goto suspend;
++    if (self->private_data.f_code_lengths[v_i] != 0u) {
++      if (v_offsets[((uint8_t)(self->private_data.f_code_lengths[v_i] & 15u))] >= 320u) {
++        return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++      }
++      v_symbols[v_offsets[((uint8_t)(self->private_data.f_code_lengths[v_i] & 15u))]] = ((uint16_t)((v_i - a_n_codes0)));
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++      v_offsets[((uint8_t)(self->private_data.f_code_lengths[v_i] & 15u))] += 1u;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
+     }
+-
+-    ok:
+-    self->private_impl.p_decode_extension[0] = 0;
+-    goto exit;
+-  }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_extension[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++    v_i += 1u;
+   }
+-
+-  return status;
+-}
+-
+-// -------- func gif.decoder.skip_blocks
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_gif__decoder__skip_blocks(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  uint8_t v_block_size = 0;
+-
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
++  v_min_cl = 1u;
++  while (true) {
++    if (v_counts[v_min_cl] != 0u) {
++      break;
++    }
++    if (v_min_cl >= 9u) {
++      return wuffs_base__make_status(wuffs_deflate__error__bad_huffman_minimum_code_length);
++    }
++    v_min_cl += 1u;
+   }
+-
+-  uint32_t coro_susp_point = self->private_impl.p_skip_blocks[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    while (true) {
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
++  v_max_cl = 15u;
++  while (true) {
++    if (v_counts[v_max_cl] != 0u) {
++      break;
++    }
++    if (v_max_cl <= 1u) {
++      return wuffs_base__make_status(wuffs_deflate__error__no_huffman_codes);
++    }
++    v_max_cl -= 1u;
++  }
++  if (v_max_cl <= 9u) {
++    self->private_impl.f_n_huffs_bits[a_which] = v_max_cl;
++  } else {
++    self->private_impl.f_n_huffs_bits[a_which] = 9u;
++  }
++  v_i = 0u;
++  if ((v_n_symbols != ((uint32_t)(v_offsets[v_max_cl]))) || (v_n_symbols != ((uint32_t)(v_offsets[15u])))) {
++    return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++  }
++  if ((a_n_codes0 + ((uint32_t)(v_symbols[0u]))) >= 320u) {
++    return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++  }
++  v_initial_high_bits = 512u;
++  if (v_max_cl < 9u) {
++    v_initial_high_bits = (((uint32_t)(1u)) << v_max_cl);
++  }
++  v_prev_cl = ((uint32_t)(((uint8_t)(self->private_data.f_code_lengths[(a_n_codes0 + ((uint32_t)(v_symbols[0u])))] & 15u))));
++  v_prev_redirect_key = 4294967295u;
++  v_top = 0u;
++  v_next_top = 512u;
++  v_code = 0u;
++  v_key = 0u;
++  v_value = 0u;
++  while (true) {
++    if ((a_n_codes0 + ((uint32_t)(v_symbols[v_i]))) >= 320u) {
++      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++    }
++    v_cl = ((uint32_t)(((uint8_t)(self->private_data.f_code_lengths[(a_n_codes0 + ((uint32_t)(v_symbols[v_i])))] & 15u))));
++    if (v_cl > v_prev_cl) {
++      v_code <<= (v_cl - v_prev_cl);
++      if (v_code >= 32768u) {
++        return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++      }
++    }
++    v_prev_cl = v_cl;
++    v_key = v_code;
++    if (v_cl > 9u) {
++      v_cl -= 9u;
++      v_redirect_key = ((v_key >> v_cl) & 511u);
++      v_key = ((v_key) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U32(v_cl));
++      if (v_prev_redirect_key != v_redirect_key) {
++        v_prev_redirect_key = v_redirect_key;
++        v_remaining = (((uint32_t)(1u)) << v_cl);
++        v_j = v_prev_cl;
++        while (v_j <= 15u) {
++          if (v_remaining <= ((uint32_t)(v_counts[v_j]))) {
++            break;
++          }
++          v_remaining -= ((uint32_t)(v_counts[v_j]));
++          if (v_remaining > 1073741824u) {
++            return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++          }
++          v_remaining <<= 1u;
++          v_j += 1u;
+         }
+-        uint8_t t_0 = *iop_a_src++;
+-        v_block_size = t_0;
++        if ((v_j <= 9u) || (15u < v_j)) {
++          return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++        }
++        v_j -= 9u;
++        v_initial_high_bits = (((uint32_t)(1u)) << v_j);
++        v_top = v_next_top;
++        if ((v_top + (((uint32_t)(1u)) << v_j)) > 1024u) {
++          return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++        }
++        v_next_top = (v_top + (((uint32_t)(1u)) << v_j));
++        v_redirect_key = (((uint32_t)(WUFFS_DEFLATE__REVERSE8[(v_redirect_key >> 1u)])) | ((v_redirect_key & 1u) << 8u));
++        self->private_data.f_huffs[a_which][v_redirect_key] = (268435465u | (v_top << 8u) | (v_j << 4u));
+       }
+-      if (v_block_size == 0u) {
+-        status = wuffs_base__make_status(NULL);
+-        goto ok;
++    }
++    if ((v_key >= 512u) || (v_counts[v_prev_cl] <= 0u)) {
++      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++    }
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++    v_counts[v_prev_cl] -= 1u;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++    v_reversed_key = (((uint32_t)(WUFFS_DEFLATE__REVERSE8[(v_key >> 1u)])) | ((v_key & 1u) << 8u));
++    v_reversed_key >>= (9u - v_cl);
++    v_symbol = ((uint32_t)(v_symbols[v_i]));
++    if (v_symbol == 256u) {
++      v_value = (536870912u | v_cl);
++    } else if ((v_symbol < 256u) && (a_which == 0u)) {
++      v_value = (2147483648u | (v_symbol << 8u) | v_cl);
++    } else if (v_symbol >= a_base_symbol) {
++      v_symbol -= a_base_symbol;
++      if (a_which == 0u) {
++        v_value = (WUFFS_DEFLATE__LCODE_MAGIC_NUMBERS[(v_symbol & 31u)] | v_cl);
++      } else {
++        v_value = (WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[(v_symbol & 31u)] | v_cl);
+       }
+-      self->private_data.s_skip_blocks[0].scratch = ((uint32_t)(v_block_size));
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-      if (self->private_data.s_skip_blocks[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-        self->private_data.s_skip_blocks[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-        iop_a_src = io2_a_src;
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
++    } else {
++      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++    }
++    v_high_bits = v_initial_high_bits;
++    v_delta = (((uint32_t)(1u)) << v_cl);
++    while (v_high_bits >= v_delta) {
++      v_high_bits -= v_delta;
++      if ((v_top + ((v_high_bits | v_reversed_key) & 511u)) >= 1024u) {
++        return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+       }
+-      iop_a_src += self->private_data.s_skip_blocks[0].scratch;
++      self->private_data.f_huffs[a_which][(v_top + ((v_high_bits | v_reversed_key) & 511u))] = v_value;
++    }
++    v_i += 1u;
++    if (v_i >= v_n_symbols) {
++      break;
++    }
++    v_code += 1u;
++    if (v_code >= 32768u) {
++      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+     }
+-
+-    ok:
+-    self->private_impl.p_skip_blocks[0] = 0;
+-    goto exit;
+-  }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_skip_blocks[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+-
+-  return status;
++  return wuffs_base__make_status(NULL);
+ }
+ 
+-// -------- func gif.decoder.decode_ae
++// ‼ WUFFS MULTI-FILE SECTION +x86_bmi2
++// -------- func deflate.decoder.decode_huffman_bmi2
+ 
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
++WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("bmi2")
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_gif__decoder__decode_ae(
+-    wuffs_gif__decoder* self,
++wuffs_deflate__decoder__decode_huffman_bmi2(
++    wuffs_deflate__decoder* self,
++    wuffs_base__io_buffer* a_dst,
+     wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint8_t v_c = 0;
+-  uint8_t v_block_size = 0;
+-  bool v_is_animexts = false;
+-  bool v_is_netscape = false;
+-  bool v_is_iccp = false;
+-  bool v_is_xmp = false;
++  uint64_t v_bits = 0;
++  uint32_t v_n_bits = 0;
++  uint32_t v_table_entry = 0;
++  uint32_t v_table_entry_n_bits = 0;
++  uint64_t v_lmask = 0;
++  uint64_t v_dmask = 0;
++  uint32_t v_redir_top = 0;
++  uint32_t v_redir_mask = 0;
++  uint32_t v_length = 0;
++  uint32_t v_dist_minus_1 = 0;
++  uint32_t v_hlen = 0;
++  uint32_t v_hdist = 0;
++  uint32_t v_hdist_adjustment = 0;
+ 
++  uint8_t* iop_a_dst = NULL;
++  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
++    }
++  }
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -38283,214 +39652,206 @@ wuffs_gif__decoder__decode_ae(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_ae[0];
+-  if (coro_susp_point) {
+-    v_block_size = self->private_data.s_decode_ae[0].v_block_size;
+-    v_is_animexts = self->private_data.s_decode_ae[0].v_is_animexts;
+-    v_is_netscape = self->private_data.s_decode_ae[0].v_is_netscape;
+-    v_is_iccp = self->private_data.s_decode_ae[0].v_is_iccp;
+-    v_is_xmp = self->private_data.s_decode_ae[0].v_is_xmp;
++  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
++    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
++    goto exit;
+   }
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    do {
+-      if (self->private_impl.f_metadata_fourcc != 0u) {
+-        status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
+-        goto ok;
+-      }
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
+-        }
+-        uint8_t t_0 = *iop_a_src++;
+-        v_block_size = t_0;
+-      }
+-      if (v_block_size == 0u) {
+-        status = wuffs_base__make_status(NULL);
+-        goto ok;
+-      }
+-      if (v_block_size != 11u) {
+-        self->private_data.s_decode_ae[0].scratch = ((uint32_t)(v_block_size));
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-        if (self->private_data.s_decode_ae[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-          self->private_data.s_decode_ae[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-          iop_a_src = io2_a_src;
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
+-        }
+-        iop_a_src += self->private_data.s_decode_ae[0].scratch;
++  v_bits = ((uint64_t)(self->private_impl.f_bits));
++  v_n_bits = self->private_impl.f_n_bits;
++  v_lmask = ((((uint64_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u);
++  v_dmask = ((((uint64_t)(1u)) << self->private_impl.f_n_huffs_bits[1u]) - 1u);
++  if (self->private_impl.f_transformed_history_count < (a_dst ? a_dst->meta.pos : 0u)) {
++    status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position);
++    goto exit;
++  }
++  v_hdist_adjustment = ((uint32_t)((self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0u))));
++  label__loop__continue:;
++  while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 266u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 8u)) {
++    v_bits |= ((uint64_t)(wuffs_base__peek_u64le__no_bounds_check(iop_a_src) << (v_n_bits & 63u)));
++    iop_a_src += ((63u - (v_n_bits & 63u)) >> 3u);
++    v_n_bits |= 56u;
++    v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_lmask)];
++    v_table_entry_n_bits = (v_table_entry & 15u);
++    v_bits >>= v_table_entry_n_bits;
++    v_n_bits -= v_table_entry_n_bits;
++    if ((v_table_entry >> 31u) != 0u) {
++      (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
++      continue;
++    } else if ((v_table_entry >> 30u) != 0u) {
++    } else if ((v_table_entry >> 29u) != 0u) {
++      self->private_impl.f_end_of_block = true;
++      break;
++    } else if ((v_table_entry >> 28u) != 0u) {
++      v_redir_top = ((v_table_entry >> 8u) & 65535u);
++      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
++      v_table_entry = self->private_data.f_huffs[0u][((v_redir_top + (((uint32_t)(v_bits)) & v_redir_mask)) & 1023u)];
++      v_table_entry_n_bits = (v_table_entry & 15u);
++      v_bits >>= v_table_entry_n_bits;
++      v_n_bits -= v_table_entry_n_bits;
++      if ((v_table_entry >> 31u) != 0u) {
++        (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
++        continue;
++      } else if ((v_table_entry >> 30u) != 0u) {
++      } else if ((v_table_entry >> 29u) != 0u) {
++        self->private_impl.f_end_of_block = true;
+         break;
++      } else if ((v_table_entry >> 28u) != 0u) {
++        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++        goto exit;
++      } else if ((v_table_entry >> 27u) != 0u) {
++        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
++        goto exit;
++      } else {
++        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++        goto exit;
+       }
+-      v_is_animexts = true;
+-      v_is_netscape = true;
+-      v_is_iccp = true;
+-      v_is_xmp = true;
+-      v_block_size = 0u;
+-      while (v_block_size < 11u) {
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint8_t t_1 = *iop_a_src++;
+-          v_c = t_1;
+-        }
+-        v_is_animexts = (v_is_animexts && (v_c == WUFFS_GIF__ANIMEXTS1DOT0[v_block_size]));
+-        v_is_netscape = (v_is_netscape && (v_c == WUFFS_GIF__NETSCAPE2DOT0[v_block_size]));
+-        v_is_iccp = (v_is_iccp && (v_c == WUFFS_GIF__ICCRGBG1012[v_block_size]));
+-        v_is_xmp = (v_is_xmp && (v_c == WUFFS_GIF__XMPDATAXMP[v_block_size]));
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wconversion"
+-#endif
+-        v_block_size += 1u;
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
++    } else if ((v_table_entry >> 27u) != 0u) {
++      status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
++      goto exit;
++    } else {
++      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++      goto exit;
++    }
++    v_length = (((v_table_entry >> 8u) & 255u) + 3u);
++    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
++    if (v_table_entry_n_bits > 0u) {
++      v_length = (((v_length + 253u + ((uint32_t)(((v_bits) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 255u) + 3u);
++      v_bits >>= v_table_entry_n_bits;
++      v_n_bits -= v_table_entry_n_bits;
++    }
++    v_table_entry = self->private_data.f_huffs[1u][(v_bits & v_dmask)];
++    v_table_entry_n_bits = (v_table_entry & 15u);
++    v_bits >>= v_table_entry_n_bits;
++    v_n_bits -= v_table_entry_n_bits;
++    if ((v_table_entry >> 28u) == 1u) {
++      v_redir_top = ((v_table_entry >> 8u) & 65535u);
++      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
++      v_table_entry = self->private_data.f_huffs[1u][((v_redir_top + (((uint32_t)(v_bits)) & v_redir_mask)) & 1023u)];
++      v_table_entry_n_bits = (v_table_entry & 15u);
++      v_bits >>= v_table_entry_n_bits;
++      v_n_bits -= v_table_entry_n_bits;
++    }
++    if ((v_table_entry >> 24u) != 64u) {
++      if ((v_table_entry >> 24u) == 8u) {
++        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
++        goto exit;
+       }
+-      if (v_is_animexts || v_is_netscape) {
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint8_t t_2 = *iop_a_src++;
+-          v_block_size = t_2;
+-        }
+-        if (v_block_size != 3u) {
+-          self->private_data.s_decode_ae[0].scratch = ((uint32_t)(v_block_size));
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-          if (self->private_data.s_decode_ae[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-            self->private_data.s_decode_ae[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-            iop_a_src = io2_a_src;
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          iop_a_src += self->private_data.s_decode_ae[0].scratch;
+-          break;
+-        }
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint8_t t_3 = *iop_a_src++;
+-          v_c = t_3;
++      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++      goto exit;
++    }
++    v_dist_minus_1 = ((v_table_entry >> 8u) & 32767u);
++    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
++    v_dist_minus_1 = ((v_dist_minus_1 + ((uint32_t)(((v_bits) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 32767u);
++    v_bits >>= v_table_entry_n_bits;
++    v_n_bits -= v_table_entry_n_bits;
++    do {
++      if (((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
++        v_hlen = 0u;
++        v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1u))) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
++        if (v_length > v_hdist) {
++          v_length -= v_hdist;
++          v_hlen = v_hdist;
++        } else {
++          v_hlen = v_length;
++          v_length = 0u;
+         }
+-        if (v_c != 1u) {
+-          self->private_data.s_decode_ae[0].scratch = 2u;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+-          if (self->private_data.s_decode_ae[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-            self->private_data.s_decode_ae[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-            iop_a_src = io2_a_src;
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          iop_a_src += self->private_data.s_decode_ae[0].scratch;
+-          break;
++        v_hdist += v_hdist_adjustment;
++        if (self->private_impl.f_history_index < v_hdist) {
++          status = wuffs_base__make_status(wuffs_deflate__error__bad_distance);
++          goto exit;
+         }
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
+-          uint32_t t_4;
+-          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-            t_4 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-            iop_a_src += 2;
+-          } else {
+-            self->private_data.s_decode_ae[0].scratch = 0;
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
+-            while (true) {
+-              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                goto suspend;
+-              }
+-              uint64_t* scratch = &self->private_data.s_decode_ae[0].scratch;
+-              uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
+-              *scratch <<= 8;
+-              *scratch >>= 8;
+-              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
+-              if (num_bits_4 == 8) {
+-                t_4 = ((uint32_t)(*scratch));
+-                break;
+-              }
+-              num_bits_4 += 8u;
+-              *scratch |= ((uint64_t)(num_bits_4)) << 56;
+-            }
+-          }
+-          self->private_impl.f_num_animation_loops_value = t_4;
++        wuffs_private_impl__io_writer__limited_copy_u32_from_slice(
++            &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767u), 33025));
++        if (v_length == 0u) {
++          goto label__loop__continue;
+         }
+-        self->private_impl.f_seen_num_animation_loops_value = true;
+-        if ((0u < self->private_impl.f_num_animation_loops_value) && (self->private_impl.f_num_animation_loops_value <= 65535u)) {
+-          self->private_impl.f_num_animation_loops_value += 1u;
++        if ((((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) || (((uint64_t)(v_length)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_length + 8u))) > ((uint64_t)(io2_a_dst - iop_a_dst)))) {
++          status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_distance);
++          goto exit;
+         }
+-      } else if (self->private_impl.f_call_sequence >= 32u) {
+-      } else if (v_is_iccp && self->private_impl.f_report_metadata_iccp) {
+-        self->private_impl.f_metadata_fourcc = 1229144912u;
+-        self->private_impl.f_metadata_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
+-        self->private_impl.f_call_sequence = 16u;
+-        status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
+-        goto ok;
+-      } else if (v_is_xmp && self->private_impl.f_report_metadata_xmp) {
+-        self->private_impl.f_metadata_fourcc = 1481461792u;
+-        self->private_impl.f_metadata_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
+-        self->private_impl.f_call_sequence = 16u;
+-        status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
+-        goto ok;
++      }
++      if ((v_dist_minus_1 + 1u) >= 8u) {
++        wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast(
++            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
++      } else if ((v_dist_minus_1 + 1u) == 1u) {
++        wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast(
++            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
++      } else {
++        wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast(
++            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
+       }
+     } while (0);
+-    if (a_src) {
+-      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-    }
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
+-    status = wuffs_gif__decoder__skip_blocks(self, a_src);
+-    if (a_src) {
+-      iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-    }
+-    if (status.repr) {
+-      goto suspend;
++  }
++  if (v_n_bits > 63u) {
++    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
++    goto exit;
++  }
++  while (v_n_bits >= 8u) {
++    v_n_bits -= 8u;
++    if (iop_a_src > io1_a_src) {
++      iop_a_src--;
++    } else {
++      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_i_o);
++      goto exit;
+     }
+-
+-    ok:
+-    self->private_impl.p_decode_ae[0] = 0;
++  }
++  self->private_impl.f_bits = ((uint32_t)((v_bits & ((((uint64_t)(1u)) << v_n_bits) - 1u))));
++  self->private_impl.f_n_bits = v_n_bits;
++  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> self->private_impl.f_n_bits) != 0u)) {
++    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
+     goto exit;
+   }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_ae[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_decode_ae[0].v_block_size = v_block_size;
+-  self->private_data.s_decode_ae[0].v_is_animexts = v_is_animexts;
+-  self->private_data.s_decode_ae[0].v_is_netscape = v_is_netscape;
+-  self->private_data.s_decode_ae[0].v_is_iccp = v_is_iccp;
+-  self->private_data.s_decode_ae[0].v_is_xmp = v_is_xmp;
+-
+   goto exit;
+   exit:
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++  }
+   if (a_src && a_src->data.ptr) {
+     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+ 
+   return status;
+ }
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
++// ‼ WUFFS MULTI-FILE SECTION -x86_bmi2
+ 
+-// -------- func gif.decoder.decode_gc
++// -------- func deflate.decoder.decode_huffman_fast32
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_gif__decoder__decode_gc(
+-    wuffs_gif__decoder* self,
++wuffs_deflate__decoder__decode_huffman_fast32(
++    wuffs_deflate__decoder* self,
++    wuffs_base__io_buffer* a_dst,
+     wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint8_t v_c = 0;
+-  uint8_t v_flags = 0;
+-  uint16_t v_gc_duration_centiseconds = 0;
++  uint32_t v_bits = 0;
++  uint32_t v_n_bits = 0;
++  uint32_t v_table_entry = 0;
++  uint32_t v_table_entry_n_bits = 0;
++  uint32_t v_lmask = 0;
++  uint32_t v_dmask = 0;
++  uint32_t v_redir_top = 0;
++  uint32_t v_redir_mask = 0;
++  uint32_t v_length = 0;
++  uint32_t v_dist_minus_1 = 0;
++  uint32_t v_hlen = 0;
++  uint32_t v_hdist = 0;
++  uint32_t v_hdist_adjustment = 0;
+ 
++  uint8_t* iop_a_dst = NULL;
++  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
++    }
++  }
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -38502,106 +39863,205 @@ wuffs_gif__decoder__decode_gc(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_gc[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_0 = *iop_a_src++;
+-      v_c = t_0;
++  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
++    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
++    goto exit;
++  }
++  v_bits = self->private_impl.f_bits;
++  v_n_bits = self->private_impl.f_n_bits;
++  v_lmask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u);
++  v_dmask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[1u]) - 1u);
++  if (self->private_impl.f_transformed_history_count < (a_dst ? a_dst->meta.pos : 0u)) {
++    status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position);
++    goto exit;
++  }
++  v_hdist_adjustment = ((uint32_t)((self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0u))));
++  label__loop__continue:;
++  while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 266u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 12u)) {
++    if (v_n_bits < 15u) {
++      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
++      iop_a_src += 1u;
++      v_n_bits += 8u;
++      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
++      iop_a_src += 1u;
++      v_n_bits += 8u;
++    } else {
+     }
+-    if (v_c != 4u) {
+-      status = wuffs_base__make_status(wuffs_gif__error__bad_graphic_control);
++    v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_lmask)];
++    v_table_entry_n_bits = (v_table_entry & 15u);
++    v_bits >>= v_table_entry_n_bits;
++    v_n_bits -= v_table_entry_n_bits;
++    if ((v_table_entry >> 31u) != 0u) {
++      (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
++      continue;
++    } else if ((v_table_entry >> 30u) != 0u) {
++    } else if ((v_table_entry >> 29u) != 0u) {
++      self->private_impl.f_end_of_block = true;
++      break;
++    } else if ((v_table_entry >> 28u) != 0u) {
++      if (v_n_bits < 15u) {
++        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
++        iop_a_src += 1u;
++        v_n_bits += 8u;
++        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
++        iop_a_src += 1u;
++        v_n_bits += 8u;
++      } else {
++      }
++      v_redir_top = ((v_table_entry >> 8u) & 65535u);
++      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
++      v_table_entry = self->private_data.f_huffs[0u][((v_redir_top + (v_bits & v_redir_mask)) & 1023u)];
++      v_table_entry_n_bits = (v_table_entry & 15u);
++      v_bits >>= v_table_entry_n_bits;
++      v_n_bits -= v_table_entry_n_bits;
++      if ((v_table_entry >> 31u) != 0u) {
++        (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
++        continue;
++      } else if ((v_table_entry >> 30u) != 0u) {
++      } else if ((v_table_entry >> 29u) != 0u) {
++        self->private_impl.f_end_of_block = true;
++        break;
++      } else if ((v_table_entry >> 28u) != 0u) {
++        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++        goto exit;
++      } else if ((v_table_entry >> 27u) != 0u) {
++        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
++        goto exit;
++      } else {
++        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++        goto exit;
++      }
++    } else if ((v_table_entry >> 27u) != 0u) {
++      status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
++      goto exit;
++    } else {
++      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+       goto exit;
+     }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
++    v_length = (((v_table_entry >> 8u) & 255u) + 3u);
++    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
++    if (v_table_entry_n_bits > 0u) {
++      if (v_n_bits < 15u) {
++        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
++        iop_a_src += 1u;
++        v_n_bits += 8u;
++        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
++        iop_a_src += 1u;
++        v_n_bits += 8u;
++      } else {
+       }
+-      uint8_t t_1 = *iop_a_src++;
+-      v_flags = t_1;
++      v_length = (((v_length + 253u + ((v_bits) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 255u) + 3u);
++      v_bits >>= v_table_entry_n_bits;
++      v_n_bits -= v_table_entry_n_bits;
++    } else {
+     }
+-    self->private_impl.f_gc_has_transparent_index = ((v_flags & 1u) != 0u);
+-    v_flags = ((v_flags >> 2u) & 7u);
+-    if (v_flags == 2u) {
+-      self->private_impl.f_gc_disposal = 1u;
+-    } else if ((v_flags == 3u) || (v_flags == 4u)) {
+-      self->private_impl.f_gc_disposal = 2u;
++    if (v_n_bits < 15u) {
++      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
++      iop_a_src += 1u;
++      v_n_bits += 8u;
++      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
++      iop_a_src += 1u;
++      v_n_bits += 8u;
+     } else {
+-      self->private_impl.f_gc_disposal = 0u;
+     }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-      uint16_t t_2;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-        t_2 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
+-        iop_a_src += 2;
++    v_table_entry = self->private_data.f_huffs[1u][(v_bits & v_dmask)];
++    v_table_entry_n_bits = (v_table_entry & 15u);
++    v_bits >>= v_table_entry_n_bits;
++    v_n_bits -= v_table_entry_n_bits;
++    if ((v_table_entry >> 28u) == 1u) {
++      if (v_n_bits < 15u) {
++        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
++        iop_a_src += 1u;
++        v_n_bits += 8u;
++        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
++        iop_a_src += 1u;
++        v_n_bits += 8u;
+       } else {
+-        self->private_data.s_decode_gc[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_decode_gc[0].scratch;
+-          uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
+-          *scratch <<= 8;
+-          *scratch >>= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
+-          if (num_bits_2 == 8) {
+-            t_2 = ((uint16_t)(*scratch));
+-            break;
+-          }
+-          num_bits_2 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_2)) << 56;
+-        }
+       }
+-      v_gc_duration_centiseconds = t_2;
++      v_redir_top = ((v_table_entry >> 8u) & 65535u);
++      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
++      v_table_entry = self->private_data.f_huffs[1u][((v_redir_top + (v_bits & v_redir_mask)) & 1023u)];
++      v_table_entry_n_bits = (v_table_entry & 15u);
++      v_bits >>= v_table_entry_n_bits;
++      v_n_bits -= v_table_entry_n_bits;
++    } else {
+     }
+-    self->private_impl.f_gc_duration = (((uint64_t)(v_gc_duration_centiseconds)) * 7056000u);
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
++    if ((v_table_entry >> 24u) != 64u) {
++      if ((v_table_entry >> 24u) == 8u) {
++        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
++        goto exit;
+       }
+-      uint8_t t_3 = *iop_a_src++;
+-      self->private_impl.f_gc_transparent_index = t_3;
++      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++      goto exit;
+     }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_4 = *iop_a_src++;
+-      v_c = t_4;
++    v_dist_minus_1 = ((v_table_entry >> 8u) & 32767u);
++    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
++    if (v_n_bits < v_table_entry_n_bits) {
++      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
++      iop_a_src += 1u;
++      v_n_bits += 8u;
++      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
++      iop_a_src += 1u;
++      v_n_bits += 8u;
+     }
+-    if (v_c != 0u) {
+-      status = wuffs_base__make_status(wuffs_gif__error__bad_graphic_control);
++    v_dist_minus_1 = ((v_dist_minus_1 + ((v_bits) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 32767u);
++    v_bits >>= v_table_entry_n_bits;
++    v_n_bits -= v_table_entry_n_bits;
++    do {
++      if (((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
++        v_hlen = 0u;
++        v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1u))) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
++        if (v_length > v_hdist) {
++          v_length -= v_hdist;
++          v_hlen = v_hdist;
++        } else {
++          v_hlen = v_length;
++          v_length = 0u;
++        }
++        v_hdist += v_hdist_adjustment;
++        if (self->private_impl.f_history_index < v_hdist) {
++          status = wuffs_base__make_status(wuffs_deflate__error__bad_distance);
++          goto exit;
++        }
++        wuffs_private_impl__io_writer__limited_copy_u32_from_slice(
++            &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767u), 33025));
++        if (v_length == 0u) {
++          goto label__loop__continue;
++        }
++        if ((((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) || (((uint64_t)(v_length)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_length + 8u))) > ((uint64_t)(io2_a_dst - iop_a_dst)))) {
++          status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_distance);
++          goto exit;
++        }
++      }
++      if ((v_dist_minus_1 + 1u) >= 8u) {
++        wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast(
++            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
++      } else {
++        wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast(
++            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
++      }
++    } while (0);
++  }
++  while (v_n_bits >= 8u) {
++    v_n_bits -= 8u;
++    if (iop_a_src > io1_a_src) {
++      iop_a_src--;
++    } else {
++      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_i_o);
+       goto exit;
+     }
+-
+-    goto ok;
+-    ok:
+-    self->private_impl.p_decode_gc[0] = 0;
++  }
++  self->private_impl.f_bits = (v_bits & ((((uint32_t)(1u)) << v_n_bits) - 1u));
++  self->private_impl.f_n_bits = v_n_bits;
++  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> self->private_impl.f_n_bits) != 0u)) {
++    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
+     goto exit;
+   }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_gc[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-
+   goto exit;
+   exit:
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++  }
+   if (a_src && a_src->data.ptr) {
+     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+@@ -38609,15 +40069,52 @@ wuffs_gif__decoder__decode_gc(
+   return status;
+ }
+ 
+-// -------- func gif.decoder.decode_id_part0
++// -------- func deflate.decoder.decode_huffman_fast64
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_gif__decoder__decode_id_part0(
+-    wuffs_gif__decoder* self,
++wuffs_deflate__decoder__decode_huffman_fast64(
++    wuffs_deflate__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  return (*self->private_impl.choosy_decode_huffman_fast64)(self, a_dst, a_src);
++}
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_deflate__decoder__decode_huffman_fast64__choosy_default(
++    wuffs_deflate__decoder* self,
++    wuffs_base__io_buffer* a_dst,
+     wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
++  uint64_t v_bits = 0;
++  uint32_t v_n_bits = 0;
++  uint32_t v_table_entry = 0;
++  uint32_t v_table_entry_n_bits = 0;
++  uint64_t v_lmask = 0;
++  uint64_t v_dmask = 0;
++  uint32_t v_redir_top = 0;
++  uint32_t v_redir_mask = 0;
++  uint32_t v_length = 0;
++  uint32_t v_dist_minus_1 = 0;
++  uint32_t v_hlen = 0;
++  uint32_t v_hdist = 0;
++  uint32_t v_hdist_adjustment = 0;
++
++  uint8_t* iop_a_dst = NULL;
++  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
++    }
++  }
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -38629,147 +40126,160 @@ wuffs_gif__decoder__decode_id_part0(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_id_part0[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      uint32_t t_0;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-        t_0 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-        iop_a_src += 2;
++  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
++    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
++    goto exit;
++  }
++  v_bits = ((uint64_t)(self->private_impl.f_bits));
++  v_n_bits = self->private_impl.f_n_bits;
++  v_lmask = ((((uint64_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u);
++  v_dmask = ((((uint64_t)(1u)) << self->private_impl.f_n_huffs_bits[1u]) - 1u);
++  if (self->private_impl.f_transformed_history_count < (a_dst ? a_dst->meta.pos : 0u)) {
++    status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position);
++    goto exit;
++  }
++  v_hdist_adjustment = ((uint32_t)((self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0u))));
++  label__loop__continue:;
++  while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 266u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 8u)) {
++    v_bits |= ((uint64_t)(wuffs_base__peek_u64le__no_bounds_check(iop_a_src) << (v_n_bits & 63u)));
++    iop_a_src += ((63u - (v_n_bits & 63u)) >> 3u);
++    v_n_bits |= 56u;
++    v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_lmask)];
++    v_table_entry_n_bits = (v_table_entry & 15u);
++    v_bits >>= v_table_entry_n_bits;
++    v_n_bits -= v_table_entry_n_bits;
++    if ((v_table_entry >> 31u) != 0u) {
++      (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
++      continue;
++    } else if ((v_table_entry >> 30u) != 0u) {
++    } else if ((v_table_entry >> 29u) != 0u) {
++      self->private_impl.f_end_of_block = true;
++      break;
++    } else if ((v_table_entry >> 28u) != 0u) {
++      v_redir_top = ((v_table_entry >> 8u) & 65535u);
++      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
++      v_table_entry = self->private_data.f_huffs[0u][((v_redir_top + (((uint32_t)(v_bits)) & v_redir_mask)) & 1023u)];
++      v_table_entry_n_bits = (v_table_entry & 15u);
++      v_bits >>= v_table_entry_n_bits;
++      v_n_bits -= v_table_entry_n_bits;
++      if ((v_table_entry >> 31u) != 0u) {
++        (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
++        continue;
++      } else if ((v_table_entry >> 30u) != 0u) {
++      } else if ((v_table_entry >> 29u) != 0u) {
++        self->private_impl.f_end_of_block = true;
++        break;
++      } else if ((v_table_entry >> 28u) != 0u) {
++        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++        goto exit;
++      } else if ((v_table_entry >> 27u) != 0u) {
++        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
++        goto exit;
+       } else {
+-        self->private_data.s_decode_id_part0[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_decode_id_part0[0].scratch;
+-          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
+-          *scratch <<= 8;
+-          *scratch >>= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
+-          if (num_bits_0 == 8) {
+-            t_0 = ((uint32_t)(*scratch));
+-            break;
+-          }
+-          num_bits_0 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_0)) << 56;
+-        }
++        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++        goto exit;
+       }
+-      self->private_impl.f_frame_rect_x0 = t_0;
++    } else if ((v_table_entry >> 27u) != 0u) {
++      status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
++      goto exit;
++    } else {
++      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++      goto exit;
+     }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-      uint32_t t_1;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-        t_1 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-        iop_a_src += 2;
+-      } else {
+-        self->private_data.s_decode_id_part0[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_decode_id_part0[0].scratch;
+-          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
+-          *scratch <<= 8;
+-          *scratch >>= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
+-          if (num_bits_1 == 8) {
+-            t_1 = ((uint32_t)(*scratch));
+-            break;
+-          }
+-          num_bits_1 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_1)) << 56;
+-        }
+-      }
+-      self->private_impl.f_frame_rect_y0 = t_1;
++    v_length = (((v_table_entry >> 8u) & 255u) + 3u);
++    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
++    if (v_table_entry_n_bits > 0u) {
++      v_length = (((v_length + 253u + ((uint32_t)(((v_bits) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 255u) + 3u);
++      v_bits >>= v_table_entry_n_bits;
++      v_n_bits -= v_table_entry_n_bits;
+     }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-      uint32_t t_2;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-        t_2 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-        iop_a_src += 2;
+-      } else {
+-        self->private_data.s_decode_id_part0[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_decode_id_part0[0].scratch;
+-          uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
+-          *scratch <<= 8;
+-          *scratch >>= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
+-          if (num_bits_2 == 8) {
+-            t_2 = ((uint32_t)(*scratch));
+-            break;
+-          }
+-          num_bits_2 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_2)) << 56;
+-        }
++    v_table_entry = self->private_data.f_huffs[1u][(v_bits & v_dmask)];
++    v_table_entry_n_bits = (v_table_entry & 15u);
++    v_bits >>= v_table_entry_n_bits;
++    v_n_bits -= v_table_entry_n_bits;
++    if ((v_table_entry >> 28u) == 1u) {
++      v_redir_top = ((v_table_entry >> 8u) & 65535u);
++      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
++      v_table_entry = self->private_data.f_huffs[1u][((v_redir_top + (((uint32_t)(v_bits)) & v_redir_mask)) & 1023u)];
++      v_table_entry_n_bits = (v_table_entry & 15u);
++      v_bits >>= v_table_entry_n_bits;
++      v_n_bits -= v_table_entry_n_bits;
++    }
++    if ((v_table_entry >> 24u) != 64u) {
++      if ((v_table_entry >> 24u) == 8u) {
++        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
++        goto exit;
+       }
+-      self->private_impl.f_frame_rect_x1 = t_2;
++      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++      goto exit;
+     }
+-    self->private_impl.f_frame_rect_x1 += self->private_impl.f_frame_rect_x0;
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+-      uint32_t t_3;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-        t_3 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-        iop_a_src += 2;
+-      } else {
+-        self->private_data.s_decode_id_part0[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_decode_id_part0[0].scratch;
+-          uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
+-          *scratch <<= 8;
+-          *scratch >>= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
+-          if (num_bits_3 == 8) {
+-            t_3 = ((uint32_t)(*scratch));
+-            break;
+-          }
+-          num_bits_3 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_3)) << 56;
++    v_dist_minus_1 = ((v_table_entry >> 8u) & 32767u);
++    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
++    v_dist_minus_1 = ((v_dist_minus_1 + ((uint32_t)(((v_bits) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 32767u);
++    v_bits >>= v_table_entry_n_bits;
++    v_n_bits -= v_table_entry_n_bits;
++    do {
++      if (((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
++        v_hlen = 0u;
++        v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1u))) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
++        if (v_length > v_hdist) {
++          v_length -= v_hdist;
++          v_hlen = v_hdist;
++        } else {
++          v_hlen = v_length;
++          v_length = 0u;
++        }
++        v_hdist += v_hdist_adjustment;
++        if (self->private_impl.f_history_index < v_hdist) {
++          status = wuffs_base__make_status(wuffs_deflate__error__bad_distance);
++          goto exit;
++        }
++        wuffs_private_impl__io_writer__limited_copy_u32_from_slice(
++            &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767u), 33025));
++        if (v_length == 0u) {
++          goto label__loop__continue;
++        }
++        if ((((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) || (((uint64_t)(v_length)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_length + 8u))) > ((uint64_t)(io2_a_dst - iop_a_dst)))) {
++          status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_distance);
++          goto exit;
+         }
+       }
+-      self->private_impl.f_frame_rect_y1 = t_3;
+-    }
+-    self->private_impl.f_frame_rect_y1 += self->private_impl.f_frame_rect_y0;
+-    self->private_impl.f_dst_x = self->private_impl.f_frame_rect_x0;
+-    self->private_impl.f_dst_y = self->private_impl.f_frame_rect_y0;
+-    if ((self->private_impl.f_num_decoded_frame_configs_value == 0u) &&  ! self->private_impl.f_quirks[4u]) {
+-      self->private_impl.f_width = wuffs_base__u32__max(self->private_impl.f_width, self->private_impl.f_frame_rect_x1);
+-      self->private_impl.f_height = wuffs_base__u32__max(self->private_impl.f_height, self->private_impl.f_frame_rect_y1);
++      if ((v_dist_minus_1 + 1u) >= 8u) {
++        wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast(
++            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
++      } else if ((v_dist_minus_1 + 1u) == 1u) {
++        wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast(
++            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
++      } else {
++        wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast(
++            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
++      }
++    } while (0);
++  }
++  if (v_n_bits > 63u) {
++    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
++    goto exit;
++  }
++  while (v_n_bits >= 8u) {
++    v_n_bits -= 8u;
++    if (iop_a_src > io1_a_src) {
++      iop_a_src--;
++    } else {
++      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_i_o);
++      goto exit;
+     }
+-
+-    goto ok;
+-    ok:
+-    self->private_impl.p_decode_id_part0[0] = 0;
++  }
++  self->private_impl.f_bits = ((uint32_t)((v_bits & ((((uint64_t)(1u)) << v_n_bits) - 1u))));
++  self->private_impl.f_n_bits = v_n_bits;
++  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> self->private_impl.f_n_bits) != 0u)) {
++    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
+     goto exit;
+   }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_id_part0[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-
+   goto exit;
+   exit:
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++  }
+   if (a_src && a_src->data.ptr) {
+     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+@@ -38777,25 +40287,49 @@ wuffs_gif__decoder__decode_id_part0(
+   return status;
+ }
+ 
+-// -------- func gif.decoder.decode_id_part1
++// -------- func deflate.decoder.decode_huffman_slow
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_gif__decoder__decode_id_part1(
+-    wuffs_gif__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend) {
++wuffs_deflate__decoder__decode_huffman_slow(
++    wuffs_deflate__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint8_t v_flags = 0;
+-  uint8_t v_which_palette = 0;
+-  uint32_t v_num_palette_entries = 0;
+-  uint32_t v_i = 0;
+-  uint32_t v_argb = 0;
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-  uint8_t v_lw = 0;
++  uint32_t v_bits = 0;
++  uint32_t v_n_bits = 0;
++  uint32_t v_table_entry = 0;
++  uint32_t v_table_entry_n_bits = 0;
++  uint32_t v_lmask = 0;
++  uint32_t v_dmask = 0;
++  uint32_t v_b0 = 0;
++  uint32_t v_redir_top = 0;
++  uint32_t v_redir_mask = 0;
++  uint32_t v_b1 = 0;
++  uint32_t v_length = 0;
++  uint32_t v_b2 = 0;
++  uint32_t v_b3 = 0;
++  uint32_t v_b4 = 0;
++  uint32_t v_dist_minus_1 = 0;
++  uint32_t v_b5 = 0;
++  uint32_t v_n_copied = 0;
++  uint32_t v_hlen = 0;
++  uint32_t v_hdist = 0;
+ 
++  uint8_t* iop_a_dst = NULL;
++  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
++    }
++  }
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -38807,139 +40341,275 @@ wuffs_gif__decoder__decode_id_part1(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_id_part1[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_huffman_slow;
+   if (coro_susp_point) {
+-    v_which_palette = self->private_data.s_decode_id_part1[0].v_which_palette;
+-    v_num_palette_entries = self->private_data.s_decode_id_part1[0].v_num_palette_entries;
+-    v_i = self->private_data.s_decode_id_part1[0].v_i;
++    v_bits = self->private_data.s_decode_huffman_slow.v_bits;
++    v_n_bits = self->private_data.s_decode_huffman_slow.v_n_bits;
++    v_table_entry_n_bits = self->private_data.s_decode_huffman_slow.v_table_entry_n_bits;
++    v_lmask = self->private_data.s_decode_huffman_slow.v_lmask;
++    v_dmask = self->private_data.s_decode_huffman_slow.v_dmask;
++    v_redir_top = self->private_data.s_decode_huffman_slow.v_redir_top;
++    v_redir_mask = self->private_data.s_decode_huffman_slow.v_redir_mask;
++    v_length = self->private_data.s_decode_huffman_slow.v_length;
++    v_dist_minus_1 = self->private_data.s_decode_huffman_slow.v_dist_minus_1;
+   }
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_0 = *iop_a_src++;
+-      v_flags = t_0;
+-    }
+-    if ((v_flags & 64u) != 0u) {
+-      self->private_impl.f_interlace = 4u;
+-    } else {
+-      self->private_impl.f_interlace = 0u;
++    if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
++      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
++      goto exit;
+     }
+-    v_which_palette = 1u;
+-    if ((v_flags & 128u) != 0u) {
+-      v_num_palette_entries = (((uint32_t)(1u)) << (1u + (v_flags & 7u)));
+-      v_i = 0u;
+-      while (v_i < v_num_palette_entries) {
++    v_bits = self->private_impl.f_bits;
++    v_n_bits = self->private_impl.f_n_bits;
++    v_lmask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u);
++    v_dmask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[1u]) - 1u);
++    label__loop__continue:;
++    while ( ! (self->private_impl.p_decode_huffman_slow != 0)) {
++      while (true) {
++        v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_lmask)];
++        v_table_entry_n_bits = (v_table_entry & 15u);
++        if (v_n_bits >= v_table_entry_n_bits) {
++          v_bits >>= v_table_entry_n_bits;
++          v_n_bits -= v_table_entry_n_bits;
++          break;
++        }
+         {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-          uint32_t t_1;
+-          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
+-            t_1 = ((uint32_t)(wuffs_base__peek_u24be__no_bounds_check(iop_a_src)));
+-            iop_a_src += 3;
+-          } else {
+-            self->private_data.s_decode_id_part1[0].scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint32_t t_0 = *iop_a_src++;
++          v_b0 = t_0;
++        }
++        v_bits |= (v_b0 << v_n_bits);
++        v_n_bits += 8u;
++      }
++      if ((v_table_entry >> 31u) != 0u) {
++        self->private_data.s_decode_huffman_slow.scratch = ((uint8_t)((v_table_entry >> 8u)));
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++        if (iop_a_dst == io2_a_dst) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++          goto suspend;
++        }
++        *iop_a_dst++ = ((uint8_t)(self->private_data.s_decode_huffman_slow.scratch));
++        continue;
++      } else if ((v_table_entry >> 30u) != 0u) {
++      } else if ((v_table_entry >> 29u) != 0u) {
++        self->private_impl.f_end_of_block = true;
++        break;
++      } else if ((v_table_entry >> 28u) != 0u) {
++        v_redir_top = ((v_table_entry >> 8u) & 65535u);
++        v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
++        while (true) {
++          v_table_entry = self->private_data.f_huffs[0u][((v_redir_top + (v_bits & v_redir_mask)) & 1023u)];
++          v_table_entry_n_bits = (v_table_entry & 15u);
++          if (v_n_bits >= v_table_entry_n_bits) {
++            v_bits >>= v_table_entry_n_bits;
++            v_n_bits -= v_table_entry_n_bits;
++            break;
++          }
++          {
+             WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-            while (true) {
+-              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                goto suspend;
+-              }
+-              uint64_t* scratch = &self->private_data.s_decode_id_part1[0].scratch;
+-              uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
+-              *scratch >>= 8;
+-              *scratch <<= 8;
+-              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
+-              if (num_bits_1 == 16) {
+-                t_1 = ((uint32_t)(*scratch >> 40));
+-                break;
+-              }
+-              num_bits_1 += 8u;
+-              *scratch |= ((uint64_t)(num_bits_1));
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
+             }
++            uint32_t t_1 = *iop_a_src++;
++            v_b1 = t_1;
+           }
+-          v_argb = t_1;
++          v_bits |= (v_b1 << v_n_bits);
++          v_n_bits += 8u;
+         }
+-        v_argb |= 4278190080u;
+-        self->private_data.f_palettes[1u][((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u)));
+-        self->private_data.f_palettes[1u][((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u)));
+-        self->private_data.f_palettes[1u][((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u)));
+-        self->private_data.f_palettes[1u][((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u)));
+-        v_i += 1u;
++        if ((v_table_entry >> 31u) != 0u) {
++          self->private_data.s_decode_huffman_slow.scratch = ((uint8_t)((v_table_entry >> 8u)));
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++          if (iop_a_dst == io2_a_dst) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++            goto suspend;
++          }
++          *iop_a_dst++ = ((uint8_t)(self->private_data.s_decode_huffman_slow.scratch));
++          continue;
++        } else if ((v_table_entry >> 30u) != 0u) {
++        } else if ((v_table_entry >> 29u) != 0u) {
++          self->private_impl.f_end_of_block = true;
++          break;
++        } else if ((v_table_entry >> 28u) != 0u) {
++          status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++          goto exit;
++        } else if ((v_table_entry >> 27u) != 0u) {
++          status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
++          goto exit;
++        } else {
++          status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++          goto exit;
++        }
++      } else if ((v_table_entry >> 27u) != 0u) {
++        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
++        goto exit;
++      } else {
++        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
++        goto exit;
+       }
+-      while (v_i < 256u) {
+-        self->private_data.f_palettes[1u][((4u * v_i) + 0u)] = 0u;
+-        self->private_data.f_palettes[1u][((4u * v_i) + 1u)] = 0u;
+-        self->private_data.f_palettes[1u][((4u * v_i) + 2u)] = 0u;
+-        self->private_data.f_palettes[1u][((4u * v_i) + 3u)] = 255u;
+-        v_i += 1u;
++      v_length = (((v_table_entry >> 8u) & 255u) + 3u);
++      v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
++      if (v_table_entry_n_bits > 0u) {
++        while (v_n_bits < v_table_entry_n_bits) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint32_t t_2 = *iop_a_src++;
++            v_b2 = t_2;
++          }
++          v_bits |= (v_b2 << v_n_bits);
++          v_n_bits += 8u;
++        }
++        v_length = (((v_length + 253u + ((v_bits) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 255u) + 3u);
++        v_bits >>= v_table_entry_n_bits;
++        v_n_bits -= v_table_entry_n_bits;
+       }
+-    } else if (self->private_impl.f_quirks[6u] &&  ! self->private_impl.f_has_global_palette) {
+-      status = wuffs_base__make_status(wuffs_gif__error__bad_palette);
+-      goto exit;
+-    } else if (self->private_impl.f_gc_has_transparent_index) {
+-      wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_palettes[1u], 1024), wuffs_base__make_slice_u8(self->private_data.f_palettes[0u], 1024));
+-    } else {
+-      v_which_palette = 0u;
+-    }
+-    if (self->private_impl.f_gc_has_transparent_index) {
+-      self->private_data.f_palettes[1u][((4u * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 0u)] = 0u;
+-      self->private_data.f_palettes[1u][((4u * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 1u)] = 0u;
+-      self->private_data.f_palettes[1u][((4u * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 2u)] = 0u;
+-      self->private_data.f_palettes[1u][((4u * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 3u)] = 0u;
+-    }
+-    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
+-        wuffs_base__pixel_buffer__pixel_format(a_dst),
+-        wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
+-        wuffs_base__utility__make_pixel_format(2198077448u),
+-        wuffs_base__make_slice_u8(self->private_data.f_palettes[v_which_palette], 1024),
+-        a_blend);
+-    if ( ! wuffs_base__status__is_ok(&v_status)) {
+-      status = v_status;
+-      if (wuffs_base__status__is_error(&status)) {
+-        goto exit;
+-      } else if (wuffs_base__status__is_suspension(&status)) {
+-        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++      while (true) {
++        v_table_entry = self->private_data.f_huffs[1u][(v_bits & v_dmask)];
++        v_table_entry_n_bits = (v_table_entry & 15u);
++        if (v_n_bits >= v_table_entry_n_bits) {
++          v_bits >>= v_table_entry_n_bits;
++          v_n_bits -= v_table_entry_n_bits;
++          break;
++        }
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint32_t t_3 = *iop_a_src++;
++          v_b3 = t_3;
++        }
++        v_bits |= (v_b3 << v_n_bits);
++        v_n_bits += 8u;
++      }
++      if ((v_table_entry >> 28u) == 1u) {
++        v_redir_top = ((v_table_entry >> 8u) & 65535u);
++        v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
++        while (true) {
++          v_table_entry = self->private_data.f_huffs[1u][((v_redir_top + (v_bits & v_redir_mask)) & 1023u)];
++          v_table_entry_n_bits = (v_table_entry & 15u);
++          if (v_n_bits >= v_table_entry_n_bits) {
++            v_bits >>= v_table_entry_n_bits;
++            v_n_bits -= v_table_entry_n_bits;
++            break;
++          }
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint32_t t_4 = *iop_a_src++;
++            v_b4 = t_4;
++          }
++          v_bits |= (v_b4 << v_n_bits);
++          v_n_bits += 8u;
++        }
++      }
++      if ((v_table_entry >> 24u) != 64u) {
++        if ((v_table_entry >> 24u) == 8u) {
++          status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
++          goto exit;
++        }
++        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
+         goto exit;
+       }
+-      goto ok;
+-    }
+-    if (self->private_impl.f_ignored_but_affects_benchmarks) {
+-    }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
++      v_dist_minus_1 = ((v_table_entry >> 8u) & 32767u);
++      v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
++      if (v_table_entry_n_bits > 0u) {
++        while (v_n_bits < v_table_entry_n_bits) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint32_t t_5 = *iop_a_src++;
++            v_b5 = t_5;
++          }
++          v_bits |= (v_b5 << v_n_bits);
++          v_n_bits += 8u;
++        }
++        v_dist_minus_1 = ((v_dist_minus_1 + ((v_bits) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 32767u);
++        v_bits >>= v_table_entry_n_bits;
++        v_n_bits -= v_table_entry_n_bits;
++      }
++      while (true) {
++        if (((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
++          v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1u))) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
++          if (v_hdist < v_length) {
++            v_hlen = v_hdist;
++          } else {
++            v_hlen = v_length;
++          }
++          v_hdist += ((uint32_t)(((uint64_t)(self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0u)))));
++          if (self->private_impl.f_history_index < v_hdist) {
++            status = wuffs_base__make_status(wuffs_deflate__error__bad_distance);
++            goto exit;
++          }
++          v_n_copied = wuffs_private_impl__io_writer__limited_copy_u32_from_slice(
++              &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767u), 33025));
++          if (v_n_copied < v_hlen) {
++            v_length -= v_n_copied;
++            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
++            continue;
++          }
++          v_length -= v_hlen;
++          if (v_length == 0u) {
++            goto label__loop__continue;
++          }
++        }
++        v_n_copied = wuffs_private_impl__io_writer__limited_copy_u32_from_history(
++            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
++        if (v_length <= v_n_copied) {
++          goto label__loop__continue;
++        }
++        v_length -= v_n_copied;
++        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
+       }
+-      uint8_t t_2 = *iop_a_src++;
+-      v_lw = t_2;
+     }
+-    if (v_lw > 8u) {
+-      status = wuffs_base__make_status(wuffs_gif__error__bad_literal_width);
++    self->private_impl.f_bits = v_bits;
++    self->private_impl.f_n_bits = v_n_bits;
++    if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
++      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
+       goto exit;
+     }
+-    self->private_impl.f_lzw_pending_literal_width_plus_one = ((uint32_t)((1u + v_lw)));
+-    self->private_impl.f_ignored_but_affects_benchmarks = true;
+ 
+     ok:
+-    self->private_impl.p_decode_id_part1[0] = 0;
++    self->private_impl.p_decode_huffman_slow = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_id_part1[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_decode_id_part1[0].v_which_palette = v_which_palette;
+-  self->private_data.s_decode_id_part1[0].v_num_palette_entries = v_num_palette_entries;
+-  self->private_data.s_decode_id_part1[0].v_i = v_i;
++  self->private_impl.p_decode_huffman_slow = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_huffman_slow.v_bits = v_bits;
++  self->private_data.s_decode_huffman_slow.v_n_bits = v_n_bits;
++  self->private_data.s_decode_huffman_slow.v_table_entry_n_bits = v_table_entry_n_bits;
++  self->private_data.s_decode_huffman_slow.v_lmask = v_lmask;
++  self->private_data.s_decode_huffman_slow.v_dmask = v_dmask;
++  self->private_data.s_decode_huffman_slow.v_redir_top = v_redir_top;
++  self->private_data.s_decode_huffman_slow.v_redir_mask = v_redir_mask;
++  self->private_data.s_decode_huffman_slow.v_length = v_length;
++  self->private_data.s_decode_huffman_slow.v_dist_minus_1 = v_dist_minus_1;
+ 
+   goto exit;
+   exit:
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++  }
+   if (a_src && a_src->data.ptr) {
+     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+@@ -38947,782 +40617,538 @@ wuffs_gif__decoder__decode_id_part1(
+   return status;
+ }
+ 
+-// -------- func gif.decoder.decode_id_part2
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__DEFLATE)
++
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GIF)
++
++// ---------------- Status Codes Implementations
++
++const char wuffs_gif__error__bad_lzw_code[] = "#gif: bad LZW code";
++const char wuffs_gif__error__bad_extension_label[] = "#gif: bad extension label";
++const char wuffs_gif__error__bad_frame_size[] = "#gif: bad frame size";
++const char wuffs_gif__error__bad_graphic_control[] = "#gif: bad graphic control";
++const char wuffs_gif__error__bad_header[] = "#gif: bad header";
++const char wuffs_gif__error__bad_literal_width[] = "#gif: bad literal width";
++const char wuffs_gif__error__bad_palette[] = "#gif: bad palette";
++const char wuffs_gif__error__truncated_input[] = "#gif: truncated input";
++const char wuffs_gif__error__internal_error_inconsistent_i_o[] = "#gif: internal error: inconsistent I/O";
++
++// ---------------- Private Consts
++
++static const uint32_t
++WUFFS_GIF__INTERLACE_START[5] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  4294967295u, 1u, 2u, 4u, 0u,
++};
++
++static const uint8_t
++WUFFS_GIF__INTERLACE_DELTA[5] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  1u, 2u, 4u, 8u, 8u,
++};
++
++static const uint8_t
++WUFFS_GIF__INTERLACE_COUNT[5] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 1u, 2u, 4u, 8u,
++};
++
++static const uint8_t
++WUFFS_GIF__ANIMEXTS1DOT0[11] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  65u, 78u, 73u, 77u, 69u, 88u, 84u, 83u,
++  49u, 46u, 48u,
++};
++
++static const uint8_t
++WUFFS_GIF__NETSCAPE2DOT0[11] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  78u, 69u, 84u, 83u, 67u, 65u, 80u, 69u,
++  50u, 46u, 48u,
++};
++
++static const uint8_t
++WUFFS_GIF__ICCRGBG1012[11] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  73u, 67u, 67u, 82u, 71u, 66u, 71u, 49u,
++  48u, 49u, 50u,
++};
++
++static const uint8_t
++WUFFS_GIF__XMPDATAXMP[11] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  88u, 77u, 80u, 32u, 68u, 97u, 116u, 97u,
++  88u, 77u, 80u,
++};
++
++#define WUFFS_GIF__QUIRKS_BASE 1041635328u
++
++#define WUFFS_GIF__QUIRKS_COUNT 7u
++
++// ---------------- Private Initializer Prototypes
++
++// ---------------- Private Function Prototypes
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_gif__decoder__decode_id_part2(
++wuffs_gif__decoder__do_decode_image_config(
++    wuffs_gif__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_gif__decoder__do_tell_me_more(
++    wuffs_gif__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__more_information* a_minfo,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_gif__decoder__do_decode_frame_config(
++    wuffs_gif__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_gif__decoder__skip_frame(
++    wuffs_gif__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_gif__decoder__do_decode_frame(
+     wuffs_gif__decoder* self,
+     wuffs_base__pixel_buffer* a_dst,
+     wuffs_base__io_buffer* a_src,
+-    wuffs_base__slice_u8 a_workbuf) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  uint64_t v_block_size = 0;
+-  bool v_need_block_size = false;
+-  uint32_t v_n_copied = 0;
+-  uint64_t v_n_compressed = 0;
+-  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
+-  wuffs_base__io_buffer* v_r = &u_r;
+-  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint64_t v_mark = 0;
+-  wuffs_base__status v_copy_status = wuffs_base__make_status(NULL);
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts);
+ 
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_gif__decoder__reset_gc(
++    wuffs_gif__decoder* self);
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_id_part2[0];
+-  if (coro_susp_point) {
+-    v_block_size = self->private_data.s_decode_id_part2[0].v_block_size;
+-    v_need_block_size = self->private_data.s_decode_id_part2[0].v_need_block_size;
+-  }
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_gif__decoder__decode_up_to_id_part1(
++    wuffs_gif__decoder* self,
++    wuffs_base__io_buffer* a_src);
+ 
+-    wuffs_gif__decoder__lzw_init(self);
+-    v_need_block_size = true;
+-    label__outer__continue:;
+-    while (true) {
+-      if (v_need_block_size) {
+-        v_need_block_size = false;
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t t_0 = *iop_a_src++;
+-          v_block_size = t_0;
+-        }
+-      }
+-      if (v_block_size == 0u) {
+-        break;
+-      }
+-      while (((uint64_t)(io2_a_src - iop_a_src)) == 0u) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
+-      }
+-      if (self->private_impl.f_compressed_ri == self->private_impl.f_compressed_wi) {
+-        self->private_impl.f_compressed_ri = 0u;
+-        self->private_impl.f_compressed_wi = 0u;
+-      }
+-      while (self->private_impl.f_compressed_wi <= 3841u) {
+-        v_n_compressed = wuffs_base__u64__min(v_block_size, ((uint64_t)(io2_a_src - iop_a_src)));
+-        if (v_n_compressed <= 0u) {
+-          break;
+-        }
+-        v_n_copied = wuffs_base__io_reader__limited_copy_u32_to_slice(
+-            &iop_a_src, io2_a_src,((uint32_t)(v_n_compressed)), wuffs_base__make_slice_u8_ij(self->private_data.f_compressed, self->private_impl.f_compressed_wi, 4096));
+-        wuffs_base__u64__sat_add_indirect(&self->private_impl.f_compressed_wi, ((uint64_t)(v_n_copied)));
+-        wuffs_base__u64__sat_sub_indirect(&v_block_size, ((uint64_t)(v_n_copied)));
+-        if (v_block_size > 0u) {
+-          break;
+-        }
+-        if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-          v_need_block_size = true;
+-          break;
+-        }
+-        v_block_size = ((uint64_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src)));
+-        iop_a_src += 1u;
+-      }
+-      while (true) {
+-        if ((self->private_impl.f_compressed_ri > self->private_impl.f_compressed_wi) || (self->private_impl.f_compressed_wi > 4096u)) {
+-          status = wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_i_o);
+-          goto exit;
+-        }
+-        {
+-          wuffs_base__io_buffer* o_0_v_r = v_r;
+-          const uint8_t *o_0_iop_v_r = iop_v_r;
+-          const uint8_t *o_0_io0_v_r = io0_v_r;
+-          const uint8_t *o_0_io1_v_r = io1_v_r;
+-          const uint8_t *o_0_io2_v_r = io2_v_r;
+-          v_r = wuffs_base__io_reader__set(
+-              &u_r,
+-              &iop_v_r,
+-              &io0_v_r,
+-              &io1_v_r,
+-              &io2_v_r,
+-              wuffs_base__make_slice_u8_ij(self->private_data.f_compressed,
+-              self->private_impl.f_compressed_ri,
+-              self->private_impl.f_compressed_wi),
+-              0u);
+-          v_mark = ((uint64_t)(iop_v_r - io0_v_r));
+-          u_r.meta.ri = ((size_t)(iop_v_r - u_r.data.ptr));
+-          wuffs_gif__decoder__lzw_read_from(self, v_r);
+-          iop_v_r = u_r.data.ptr + u_r.meta.ri;
+-          wuffs_base__u64__sat_add_indirect(&self->private_impl.f_compressed_ri, wuffs_base__io__count_since(v_mark, ((uint64_t)(iop_v_r - io0_v_r))));
+-          v_r = o_0_v_r;
+-          iop_v_r = o_0_iop_v_r;
+-          io0_v_r = o_0_io0_v_r;
+-          io1_v_r = o_0_io1_v_r;
+-          io2_v_r = o_0_io2_v_r;
+-        }
+-        if (self->private_impl.f_lzw_output_ri < self->private_impl.f_lzw_output_wi) {
+-          v_copy_status = wuffs_gif__decoder__copy_to_image_buffer(self, a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_lzw_output,
+-              self->private_impl.f_lzw_output_ri,
+-              self->private_impl.f_lzw_output_wi));
+-          if (wuffs_base__status__is_error(&v_copy_status)) {
+-            status = v_copy_status;
+-            goto exit;
+-          }
+-          self->private_impl.f_lzw_output_ri = 0u;
+-          self->private_impl.f_lzw_output_wi = 0u;
+-        }
+-        if (self->private_impl.f_lzw_read_from_return_value == 0u) {
+-          self->private_impl.f_ignored_but_affects_benchmarks = false;
+-          if (v_need_block_size || (v_block_size > 0u)) {
+-            self->private_data.s_decode_id_part2[0].scratch = ((uint32_t)(v_block_size));
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-            if (self->private_data.s_decode_id_part2[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-              self->private_data.s_decode_id_part2[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-              iop_a_src = io2_a_src;
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            iop_a_src += self->private_data.s_decode_id_part2[0].scratch;
+-            if (a_src) {
+-              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-            }
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-            status = wuffs_gif__decoder__skip_blocks(self, a_src);
+-            if (a_src) {
+-              iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-            }
+-            if (status.repr) {
+-              goto suspend;
+-            }
+-          }
+-          goto label__outer__break;
+-        } else if (self->private_impl.f_lzw_read_from_return_value == 1u) {
+-          continue;
+-        } else if (self->private_impl.f_lzw_read_from_return_value == 2u) {
+-          goto label__outer__continue;
+-        } else if (self->private_impl.f_quirks[3u] && (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1) && (self->private_impl.f_interlace == 0u)) {
+-          if (v_need_block_size || (v_block_size > 0u)) {
+-            self->private_data.s_decode_id_part2[0].scratch = ((uint32_t)(v_block_size));
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-            if (self->private_data.s_decode_id_part2[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-              self->private_data.s_decode_id_part2[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-              iop_a_src = io2_a_src;
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            iop_a_src += self->private_data.s_decode_id_part2[0].scratch;
+-            if (a_src) {
+-              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-            }
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-            status = wuffs_gif__decoder__skip_blocks(self, a_src);
+-            if (a_src) {
+-              iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-            }
+-            if (status.repr) {
+-              goto suspend;
+-            }
+-          }
+-          goto label__outer__break;
+-        } else if (self->private_impl.f_lzw_read_from_return_value == 3u) {
+-          status = wuffs_base__make_status(wuffs_gif__error__truncated_input);
+-          goto exit;
+-        } else if (self->private_impl.f_lzw_read_from_return_value == 4u) {
+-          status = wuffs_base__make_status(wuffs_gif__error__bad_lzw_code);
+-          goto exit;
+-        }
+-        status = wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_i_o);
+-        goto exit;
+-      }
+-    }
+-    label__outer__break:;
+-    self->private_impl.f_compressed_ri = 0u;
+-    self->private_impl.f_compressed_wi = 0u;
+-    if ((self->private_impl.f_dst_y < self->private_impl.f_frame_rect_y1) && (self->private_impl.f_frame_rect_x0 != self->private_impl.f_frame_rect_x1) && (self->private_impl.f_frame_rect_y0 != self->private_impl.f_frame_rect_y1)) {
+-      status = wuffs_base__make_status(wuffs_base__error__not_enough_data);
+-      goto exit;
+-    }
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_gif__decoder__decode_header(
++    wuffs_gif__decoder* self,
++    wuffs_base__io_buffer* a_src);
+ 
+-    ok:
+-    self->private_impl.p_decode_id_part2[0] = 0;
+-    goto exit;
+-  }
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_gif__decoder__decode_lsd(
++    wuffs_gif__decoder* self,
++    wuffs_base__io_buffer* a_src);
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_id_part2[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_decode_id_part2[0].v_block_size = v_block_size;
+-  self->private_data.s_decode_id_part2[0].v_need_block_size = v_need_block_size;
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_gif__decoder__decode_extension(
++    wuffs_gif__decoder* self,
++    wuffs_base__io_buffer* a_src);
+ 
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_gif__decoder__skip_blocks(
++    wuffs_gif__decoder* self,
++    wuffs_base__io_buffer* a_src);
+ 
+-  return status;
+-}
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_gif__decoder__decode_ae(
++    wuffs_gif__decoder* self,
++    wuffs_base__io_buffer* a_src);
+ 
+-// -------- func gif.decoder.copy_to_image_buffer
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_gif__decoder__decode_gc(
++    wuffs_gif__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_gif__decoder__decode_id_part0(
++    wuffs_gif__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_gif__decoder__decode_id_part1(
++    wuffs_gif__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_gif__decoder__decode_id_part2(
++    wuffs_gif__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+ wuffs_gif__decoder__copy_to_image_buffer(
+     wuffs_gif__decoder* self,
+     wuffs_base__pixel_buffer* a_pb,
+-    wuffs_base__slice_u8 a_src) {
+-  wuffs_base__slice_u8 v_dst = {0};
+-  wuffs_base__slice_u8 v_src = {0};
+-  uint64_t v_width_in_bytes = 0;
+-  uint64_t v_n = 0;
+-  uint64_t v_src_ri = 0;
+-  wuffs_base__pixel_format v_pixfmt = {0};
+-  uint32_t v_bytes_per_pixel = 0;
+-  uint32_t v_bits_per_pixel = 0;
+-  wuffs_base__table_u8 v_tab = {0};
+-  uint64_t v_i = 0;
+-  uint64_t v_j = 0;
+-  uint32_t v_replicate_y0 = 0;
+-  uint32_t v_replicate_y1 = 0;
+-  wuffs_base__slice_u8 v_replicate_dst = {0};
+-  wuffs_base__slice_u8 v_replicate_src = {0};
++    wuffs_base__slice_u8 a_src);
+ 
+-  v_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_pb);
+-  v_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_pixfmt);
+-  if ((v_bits_per_pixel & 7u) != 0u) {
+-    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_gif__decoder__lzw_init(
++    wuffs_gif__decoder* self);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_gif__decoder__lzw_read_from(
++    wuffs_gif__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++// ---------------- VTables
++
++const wuffs_base__image_decoder__func_ptrs
++wuffs_gif__decoder__func_ptrs_for__wuffs_base__image_decoder = {
++  (wuffs_base__status(*)(void*,
++      wuffs_base__pixel_buffer*,
++      wuffs_base__io_buffer*,
++      wuffs_base__pixel_blend,
++      wuffs_base__slice_u8,
++      wuffs_base__decode_frame_options*))(&wuffs_gif__decoder__decode_frame),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__frame_config*,
++      wuffs_base__io_buffer*))(&wuffs_gif__decoder__decode_frame_config),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__image_config*,
++      wuffs_base__io_buffer*))(&wuffs_gif__decoder__decode_image_config),
++  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_gif__decoder__frame_dirty_rect),
++  (uint64_t(*)(const void*,
++      uint32_t))(&wuffs_gif__decoder__get_quirk),
++  (uint32_t(*)(const void*))(&wuffs_gif__decoder__num_animation_loops),
++  (uint64_t(*)(const void*))(&wuffs_gif__decoder__num_decoded_frame_configs),
++  (uint64_t(*)(const void*))(&wuffs_gif__decoder__num_decoded_frames),
++  (wuffs_base__status(*)(void*,
++      uint64_t,
++      uint64_t))(&wuffs_gif__decoder__restart_frame),
++  (wuffs_base__status(*)(void*,
++      uint32_t,
++      uint64_t))(&wuffs_gif__decoder__set_quirk),
++  (wuffs_base__empty_struct(*)(void*,
++      uint32_t,
++      bool))(&wuffs_gif__decoder__set_report_metadata),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__io_buffer*,
++      wuffs_base__more_information*,
++      wuffs_base__io_buffer*))(&wuffs_gif__decoder__tell_me_more),
++  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_gif__decoder__workbuf_len),
++};
++
++// ---------------- Initializer Implementations
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_gif__decoder__initialize(
++    wuffs_gif__decoder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options){
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+-  v_bytes_per_pixel = (v_bits_per_pixel >> 3u);
+-  v_width_in_bytes = ((uint64_t)((self->private_impl.f_width * v_bytes_per_pixel)));
+-  v_tab = wuffs_base__pixel_buffer__plane(a_pb, 0u);
+-  while (v_src_ri < ((uint64_t)(a_src.len))) {
+-    v_src = wuffs_base__slice_u8__subslice_i(a_src, v_src_ri);
+-    if (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1) {
+-      if (self->private_impl.f_quirks[3u]) {
+-        return wuffs_base__make_status(NULL);
+-      }
+-      return wuffs_base__make_status(wuffs_base__error__too_much_data);
+-    }
+-    v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
+-    if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
+-      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, 0u);
+-    } else if (v_width_in_bytes < ((uint64_t)(v_dst.len))) {
+-      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_width_in_bytes);
+-    }
+-    v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_bytes_per_pixel)));
+-    if (v_i < ((uint64_t)(v_dst.len))) {
+-      v_j = (((uint64_t)(self->private_impl.f_frame_rect_x1)) * ((uint64_t)(v_bytes_per_pixel)));
+-      if ((v_i <= v_j) && (v_j <= ((uint64_t)(v_dst.len)))) {
+-        v_dst = wuffs_base__slice_u8__subslice_ij(v_dst, v_i, v_j);
+-      } else {
+-        v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_i);
+-      }
+-      v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024), v_src);
+-      wuffs_base__u64__sat_add_indirect(&v_src_ri, v_n);
+-      wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
+-      self->private_impl.f_dirty_max_excl_y = wuffs_base__u32__max(self->private_impl.f_dirty_max_excl_y, wuffs_base__u32__sat_add(self->private_impl.f_dst_y, 1u));
+-    }
+-    if (self->private_impl.f_frame_rect_x1 <= self->private_impl.f_dst_x) {
+-      self->private_impl.f_dst_x = self->private_impl.f_frame_rect_x0;
+-      if (self->private_impl.f_interlace == 0u) {
+-        wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_y, 1u);
+-        continue;
+-      }
+-      if ((self->private_impl.f_num_decoded_frames_value == 0u) &&  ! self->private_impl.f_gc_has_transparent_index && (self->private_impl.f_interlace > 1u)) {
+-        v_replicate_src = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
+-        v_replicate_y0 = wuffs_base__u32__sat_add(self->private_impl.f_dst_y, 1u);
+-        v_replicate_y1 = wuffs_base__u32__sat_add(self->private_impl.f_dst_y, ((uint32_t)(WUFFS_GIF__INTERLACE_COUNT[self->private_impl.f_interlace])));
+-        v_replicate_y1 = wuffs_base__u32__min(v_replicate_y1, self->private_impl.f_frame_rect_y1);
+-        while (v_replicate_y0 < v_replicate_y1) {
+-          v_replicate_dst = wuffs_base__table_u8__row_u32(v_tab, v_replicate_y0);
+-          wuffs_base__slice_u8__copy_from_slice(v_replicate_dst, v_replicate_src);
+-          v_replicate_y0 += 1u;
+-        }
+-        self->private_impl.f_dirty_max_excl_y = wuffs_base__u32__max(self->private_impl.f_dirty_max_excl_y, v_replicate_y1);
+-      }
+-      wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_y, ((uint32_t)(WUFFS_GIF__INTERLACE_DELTA[self->private_impl.f_interlace])));
+-      while ((self->private_impl.f_interlace > 0u) && (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1)) {
+-#if defined(__GNUC__)
++  if (sizeof(*self) != sizeof_star_self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  }
++  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
++      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++  }
++
++  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
++    // The whole point of this if-check is to detect an uninitialized *self.
++    // We disable the warning on GCC. Clang-5.0 does not have this warning.
++#if !defined(__clang__) && defined(__GNUC__)
+ #pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wconversion"
+-#endif
+-        self->private_impl.f_interlace -= 1u;
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic pop
++#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+ #endif
+-        self->private_impl.f_dst_y = wuffs_base__u32__sat_add(self->private_impl.f_frame_rect_y0, WUFFS_GIF__INTERLACE_START[self->private_impl.f_interlace]);
+-      }
+-      continue;
+-    }
+-    if (((uint64_t)(a_src.len)) == v_src_ri) {
+-      break;
+-    } else if (((uint64_t)(a_src.len)) < v_src_ri) {
+-      return wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_i_o);
++    if (self->private_impl.magic != 0) {
++      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
+     }
+-    v_n = ((uint64_t)((self->private_impl.f_frame_rect_x1 - self->private_impl.f_dst_x)));
+-    v_n = wuffs_base__u64__min(v_n, (((uint64_t)(a_src.len)) - v_src_ri));
+-    wuffs_base__u64__sat_add_indirect(&v_src_ri, v_n);
+-    wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
+-    if (self->private_impl.f_frame_rect_x1 <= self->private_impl.f_dst_x) {
+-      self->private_impl.f_dst_x = self->private_impl.f_frame_rect_x0;
+-      wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_y, ((uint32_t)(WUFFS_GIF__INTERLACE_DELTA[self->private_impl.f_interlace])));
+-      while ((self->private_impl.f_interlace > 0u) && (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1)) {
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wconversion"
+-#endif
+-        self->private_impl.f_interlace -= 1u;
+-#if defined(__GNUC__)
++#if !defined(__clang__) && defined(__GNUC__)
+ #pragma GCC diagnostic pop
+ #endif
+-        self->private_impl.f_dst_y = wuffs_base__u32__sat_add(self->private_impl.f_frame_rect_y0, WUFFS_GIF__INTERLACE_START[self->private_impl.f_interlace]);
+-      }
+-      continue;
+-    }
+-    if (v_src_ri != ((uint64_t)(a_src.len))) {
+-      return wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_i_o);
++  } else {
++    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
++      memset(self, 0, sizeof(*self));
++      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
++    } else {
++      memset(&(self->private_impl), 0, sizeof(self->private_impl));
+     }
+-    break;
+   }
++
++  self->private_impl.magic = WUFFS_BASE__MAGIC;
++  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
++      wuffs_base__image_decoder__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
++      (const void*)(&wuffs_gif__decoder__func_ptrs_for__wuffs_base__image_decoder);
+   return wuffs_base__make_status(NULL);
+ }
+ 
+-// -------- func gif.decoder.lzw_init
++wuffs_gif__decoder*
++wuffs_gif__decoder__alloc(void) {
++  wuffs_gif__decoder* x =
++      (wuffs_gif__decoder*)(calloc(1, sizeof(wuffs_gif__decoder)));
++  if (!x) {
++    return NULL;
++  }
++  if (wuffs_gif__decoder__initialize(
++      x, sizeof(wuffs_gif__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++    free(x);
++    return NULL;
++  }
++  return x;
++}
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_gif__decoder__lzw_init(
+-    wuffs_gif__decoder* self) {
+-  uint32_t v_i = 0;
++size_t
++sizeof__wuffs_gif__decoder(void) {
++  return sizeof(wuffs_gif__decoder);
++}
+ 
+-  self->private_impl.f_lzw_literal_width = 8u;
+-  if (self->private_impl.f_lzw_pending_literal_width_plus_one > 0u) {
+-    self->private_impl.f_lzw_literal_width = (self->private_impl.f_lzw_pending_literal_width_plus_one - 1u);
++// ---------------- Function Implementations
++
++// -------- func gif.decoder.get_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_gif__decoder__get_quirk(
++    const wuffs_gif__decoder* self,
++    uint32_t a_key) {
++  if (!self) {
++    return 0;
+   }
+-  self->private_impl.f_lzw_clear_code = (((uint32_t)(1u)) << self->private_impl.f_lzw_literal_width);
+-  self->private_impl.f_lzw_end_code = (self->private_impl.f_lzw_clear_code + 1u);
+-  self->private_impl.f_lzw_save_code = self->private_impl.f_lzw_end_code;
+-  self->private_impl.f_lzw_prev_code = self->private_impl.f_lzw_end_code;
+-  self->private_impl.f_lzw_width = (self->private_impl.f_lzw_literal_width + 1u);
+-  self->private_impl.f_lzw_bits = 0u;
+-  self->private_impl.f_lzw_n_bits = 0u;
+-  self->private_impl.f_lzw_output_ri = 0u;
+-  self->private_impl.f_lzw_output_wi = 0u;
+-  v_i = 0u;
+-  while (v_i < self->private_impl.f_lzw_clear_code) {
+-    self->private_data.f_lzw_lm1s[v_i] = 0u;
+-    self->private_data.f_lzw_suffixes[v_i][0u] = ((uint8_t)(v_i));
+-    v_i += 1u;
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
+   }
+-  return wuffs_base__make_empty_struct();
++
++  uint32_t v_key = 0;
++
++  if (a_key >= 1041635328u) {
++    v_key = (a_key - 1041635328u);
++    if (v_key < 7u) {
++      if (self->private_impl.f_quirks[v_key]) {
++        return 1u;
++      }
++    }
++  }
++  return 0u;
+ }
+ 
+-// -------- func gif.decoder.lzw_read_from
++// -------- func gif.decoder.set_quirk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_gif__decoder__lzw_read_from(
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_gif__decoder__set_quirk(
+     wuffs_gif__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
+-  uint32_t v_clear_code = 0;
+-  uint32_t v_end_code = 0;
+-  uint32_t v_save_code = 0;
+-  uint32_t v_prev_code = 0;
+-  uint32_t v_width = 0;
+-  uint32_t v_bits = 0;
+-  uint32_t v_n_bits = 0;
+-  uint32_t v_output_wi = 0;
+-  uint32_t v_code = 0;
+-  uint32_t v_c = 0;
+-  uint32_t v_o = 0;
+-  uint32_t v_steps = 0;
+-  uint8_t v_first_byte = 0;
+-  uint16_t v_lm1_b = 0;
+-  uint16_t v_lm1_a = 0;
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
+ 
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
++  if ((self->private_impl.f_call_sequence == 0u) && (a_key >= 1041635328u)) {
++    a_key -= 1041635328u;
++    if (a_key < 7u) {
++      self->private_impl.f_quirks[a_key] = (a_value > 0u);
++      return wuffs_base__make_status(NULL);
++    }
+   }
++  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++}
+ 
+-  v_clear_code = self->private_impl.f_lzw_clear_code;
+-  v_end_code = self->private_impl.f_lzw_end_code;
+-  v_save_code = self->private_impl.f_lzw_save_code;
+-  v_prev_code = self->private_impl.f_lzw_prev_code;
+-  v_width = self->private_impl.f_lzw_width;
+-  v_bits = self->private_impl.f_lzw_bits;
+-  v_n_bits = self->private_impl.f_lzw_n_bits;
+-  v_output_wi = self->private_impl.f_lzw_output_wi;
+-  while (true) {
+-    if (v_n_bits < v_width) {
+-      if (((uint64_t)(io2_a_src - iop_a_src)) >= 4u) {
+-        v_bits |= ((uint32_t)(wuffs_base__peek_u32le__no_bounds_check(iop_a_src) << v_n_bits));
+-        iop_a_src += ((31u - v_n_bits) >> 3u);
+-        v_n_bits |= 24u;
+-      } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-        if (a_src && a_src->meta.closed) {
+-          self->private_impl.f_lzw_read_from_return_value = 3u;
+-        } else {
+-          self->private_impl.f_lzw_read_from_return_value = 2u;
+-        }
+-        break;
+-      } else {
+-        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
+-        iop_a_src += 1u;
+-        v_n_bits += 8u;
+-        if (v_n_bits >= v_width) {
+-        } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-          if (a_src && a_src->meta.closed) {
+-            self->private_impl.f_lzw_read_from_return_value = 3u;
+-          } else {
+-            self->private_impl.f_lzw_read_from_return_value = 2u;
+-          }
+-          break;
+-        } else {
+-          v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
+-          iop_a_src += 1u;
+-          v_n_bits += 8u;
+-          if (v_n_bits < v_width) {
+-            self->private_impl.f_lzw_read_from_return_value = 5u;
+-            break;
+-          }
+-        }
+-      }
+-    }
+-    v_code = ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_width));
+-    v_bits >>= v_width;
+-    v_n_bits -= v_width;
+-    if (v_code < v_clear_code) {
+-      self->private_data.f_lzw_output[v_output_wi] = ((uint8_t)(v_code));
+-      v_output_wi = ((v_output_wi + 1u) & 8191u);
+-      if (v_save_code <= 4095u) {
+-        v_lm1_a = (((uint16_t)(self->private_data.f_lzw_lm1s[v_prev_code] + 1u)) & 4095u);
+-        self->private_data.f_lzw_lm1s[v_save_code] = v_lm1_a;
+-        if ((v_lm1_a % 8u) != 0u) {
+-          self->private_impl.f_lzw_prefixes[v_save_code] = self->private_impl.f_lzw_prefixes[v_prev_code];
+-          memcpy(self->private_data.f_lzw_suffixes[v_save_code],self->private_data.f_lzw_suffixes[v_prev_code], sizeof(self->private_data.f_lzw_suffixes[v_save_code]));
+-          self->private_data.f_lzw_suffixes[v_save_code][(v_lm1_a % 8u)] = ((uint8_t)(v_code));
+-        } else {
+-          self->private_impl.f_lzw_prefixes[v_save_code] = ((uint16_t)(v_prev_code));
+-          self->private_data.f_lzw_suffixes[v_save_code][0u] = ((uint8_t)(v_code));
+-        }
+-        v_save_code += 1u;
+-        if (v_width < 12u) {
+-          v_width += (1u & (v_save_code >> v_width));
+-        }
+-        v_prev_code = v_code;
+-      }
+-    } else if (v_code <= v_end_code) {
+-      if (v_code == v_end_code) {
+-        self->private_impl.f_lzw_read_from_return_value = 0u;
+-        break;
+-      }
+-      v_save_code = v_end_code;
+-      v_prev_code = v_end_code;
+-      v_width = (self->private_impl.f_lzw_literal_width + 1u);
+-    } else if (v_code <= v_save_code) {
+-      v_c = v_code;
+-      if (v_code == v_save_code) {
+-        v_c = v_prev_code;
+-      }
+-      v_o = ((v_output_wi + (((uint32_t)(self->private_data.f_lzw_lm1s[v_c])) & 4294967288u)) & 8191u);
+-      v_output_wi = ((v_output_wi + 1u + ((uint32_t)(self->private_data.f_lzw_lm1s[v_c]))) & 8191u);
+-      v_steps = (((uint32_t)(self->private_data.f_lzw_lm1s[v_c])) >> 3u);
+-      while (true) {
+-        memcpy((self->private_data.f_lzw_output)+(v_o), (self->private_data.f_lzw_suffixes[v_c]), 8u);
+-        if (v_steps <= 0u) {
+-          break;
+-        }
+-        v_steps -= 1u;
+-        v_o = (((uint32_t)(v_o - 8u)) & 8191u);
+-        v_c = ((uint32_t)(self->private_impl.f_lzw_prefixes[v_c]));
+-      }
+-      v_first_byte = self->private_data.f_lzw_suffixes[v_c][0u];
+-      if (v_code == v_save_code) {
+-        self->private_data.f_lzw_output[v_output_wi] = v_first_byte;
+-        v_output_wi = ((v_output_wi + 1u) & 8191u);
+-      }
+-      if (v_save_code <= 4095u) {
+-        v_lm1_b = (((uint16_t)(self->private_data.f_lzw_lm1s[v_prev_code] + 1u)) & 4095u);
+-        self->private_data.f_lzw_lm1s[v_save_code] = v_lm1_b;
+-        if ((v_lm1_b % 8u) != 0u) {
+-          self->private_impl.f_lzw_prefixes[v_save_code] = self->private_impl.f_lzw_prefixes[v_prev_code];
+-          memcpy(self->private_data.f_lzw_suffixes[v_save_code],self->private_data.f_lzw_suffixes[v_prev_code], sizeof(self->private_data.f_lzw_suffixes[v_save_code]));
+-          self->private_data.f_lzw_suffixes[v_save_code][(v_lm1_b % 8u)] = v_first_byte;
+-        } else {
+-          self->private_impl.f_lzw_prefixes[v_save_code] = ((uint16_t)(v_prev_code));
+-          self->private_data.f_lzw_suffixes[v_save_code][0u] = ((uint8_t)(v_first_byte));
+-        }
+-        v_save_code += 1u;
+-        if (v_width < 12u) {
+-          v_width += (1u & (v_save_code >> v_width));
+-        }
+-        v_prev_code = v_code;
+-      }
+-    } else {
+-      self->private_impl.f_lzw_read_from_return_value = 4u;
+-      break;
+-    }
+-    if (v_output_wi > 4095u) {
+-      self->private_impl.f_lzw_read_from_return_value = 1u;
+-      break;
+-    }
++// -------- func gif.decoder.decode_image_config
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_gif__decoder__decode_image_config(
++    wuffs_gif__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+-  if (self->private_impl.f_lzw_read_from_return_value != 2u) {
+-    while (v_n_bits >= 8u) {
+-      v_n_bits -= 8u;
+-      if (iop_a_src > io1_a_src) {
+-        iop_a_src--;
+-      } else {
+-        self->private_impl.f_lzw_read_from_return_value = 5u;
+-        break;
+-      }
+-    }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
+   }
+-  self->private_impl.f_lzw_save_code = v_save_code;
+-  self->private_impl.f_lzw_prev_code = v_prev_code;
+-  self->private_impl.f_lzw_width = v_width;
+-  self->private_impl.f_lzw_bits = v_bits;
+-  self->private_impl.f_lzw_n_bits = v_n_bits;
+-  self->private_impl.f_lzw_output_wi = v_output_wi;
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  if (!a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+   }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 1)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  return wuffs_base__make_empty_struct();
+-}
+-
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GIF)
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GZIP)
++  uint32_t coro_susp_point = self->private_impl.p_decode_image_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-// ---------------- Status Codes Implementations
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_gif__decoder__do_decode_image_config(self, a_dst, a_src);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_gif__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
+ 
+-const char wuffs_gzip__error__bad_checksum[] = "#gzip: bad checksum";
+-const char wuffs_gzip__error__bad_compression_method[] = "#gzip: bad compression method";
+-const char wuffs_gzip__error__bad_encoding_flags[] = "#gzip: bad encoding flags";
+-const char wuffs_gzip__error__bad_header[] = "#gzip: bad header";
+-const char wuffs_gzip__error__truncated_input[] = "#gzip: truncated input";
++    ok:
++    self->private_impl.p_decode_image_config = 0;
++    goto exit;
++  }
+ 
+-// ---------------- Private Consts
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
+ 
+-// ---------------- Private Initializer Prototypes
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
+ 
+-// ---------------- Private Function Prototypes
++// -------- func gif.decoder.do_decode_image_config
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_gzip__decoder__do_transform_io(
+-    wuffs_gzip__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__slice_u8 a_workbuf);
+-
+-// ---------------- VTables
+-
+-const wuffs_base__io_transformer__func_ptrs
+-wuffs_gzip__decoder__func_ptrs_for__wuffs_base__io_transformer = {
+-  (uint64_t(*)(const void*,
+-      uint32_t))(&wuffs_gzip__decoder__get_quirk),
+-  (uint64_t(*)(const void*))(&wuffs_gzip__decoder__history_retain_length),
+-  (wuffs_base__status(*)(void*,
+-      uint32_t,
+-      uint64_t))(&wuffs_gzip__decoder__set_quirk),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__slice_u8))(&wuffs_gzip__decoder__transform_io),
+-  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_gzip__decoder__workbuf_len),
+-};
++wuffs_gif__decoder__do_decode_image_config(
++    wuffs_gif__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-// ---------------- Initializer Implementations
++  bool v_ffio = false;
+ 
+-wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_gzip__decoder__initialize(
+-    wuffs_gzip__decoder* self,
+-    size_t sizeof_star_self,
+-    uint64_t wuffs_version,
+-    uint32_t options){
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (sizeof(*self) != sizeof_star_self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
+-  }
+-  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
+-      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
+-  }
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
+-    // The whole point of this if-check is to detect an uninitialized *self.
+-    // We disable the warning on GCC. Clang-5.0 does not have this warning.
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+-#endif
+-    if (self->private_impl.magic != 0) {
+-      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++    if (self->private_impl.f_call_sequence != 0u) {
++      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++      goto exit;
++    } else if ( ! self->private_impl.f_seen_header) {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      status = wuffs_gif__decoder__decode_header(self, a_src);
++      if (status.repr) {
++        goto suspend;
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++      status = wuffs_gif__decoder__decode_lsd(self, a_src);
++      if (status.repr) {
++        goto suspend;
++      }
++      self->private_impl.f_seen_header = true;
+     }
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-  } else {
+-    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
+-      memset(self, 0, sizeof(*self));
+-      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
+-    } else {
+-      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++    status = wuffs_gif__decoder__decode_up_to_id_part1(self, a_src);
++    if (status.repr) {
++      goto suspend;
+     }
+-  }
+-
+-  {
+-    wuffs_base__status z = wuffs_crc32__ieee_hasher__initialize(
+-        &self->private_data.f_checksum, sizeof(self->private_data.f_checksum), WUFFS_VERSION, options);
+-    if (z.repr) {
+-      return z;
++    v_ffio =  ! self->private_impl.f_gc_has_transparent_index;
++    if ( ! self->private_impl.f_quirks[2u]) {
++      v_ffio = (v_ffio &&
++          (self->private_impl.f_frame_rect_x0 == 0u) &&
++          (self->private_impl.f_frame_rect_y0 == 0u) &&
++          (self->private_impl.f_frame_rect_x1 == self->private_impl.f_width) &&
++          (self->private_impl.f_frame_rect_y1 == self->private_impl.f_height));
++    } else if (v_ffio) {
++      self->private_impl.f_black_color_u32_argb_premul = 4278190080u;
+     }
+-  }
+-  {
+-    wuffs_base__status z = wuffs_deflate__decoder__initialize(
+-        &self->private_data.f_flate, sizeof(self->private_data.f_flate), WUFFS_VERSION, options);
+-    if (z.repr) {
+-      return z;
++    if (self->private_impl.f_background_color_u32_argb_premul == 77u) {
++      self->private_impl.f_background_color_u32_argb_premul = self->private_impl.f_black_color_u32_argb_premul;
++    }
++    if (a_dst != NULL) {
++      wuffs_base__image_config__set(
++          a_dst,
++          2198077448u,
++          0u,
++          self->private_impl.f_width,
++          self->private_impl.f_height,
++          self->private_impl.f_frame_config_io_position,
++          v_ffio);
++    }
++    if (self->private_impl.f_call_sequence == 0u) {
++      self->private_impl.f_call_sequence = 32u;
+     }
+-  }
+-  self->private_impl.magic = WUFFS_BASE__MAGIC;
+-  self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
+-      wuffs_base__io_transformer__vtable_name;
+-  self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
+-      (const void*)(&wuffs_gzip__decoder__func_ptrs_for__wuffs_base__io_transformer);
+-  return wuffs_base__make_status(NULL);
+-}
+ 
+-wuffs_gzip__decoder*
+-wuffs_gzip__decoder__alloc(void) {
+-  wuffs_gzip__decoder* x =
+-      (wuffs_gzip__decoder*)(calloc(sizeof(wuffs_gzip__decoder), 1));
+-  if (!x) {
+-    return NULL;
+-  }
+-  if (wuffs_gzip__decoder__initialize(
+-      x, sizeof(wuffs_gzip__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
+-    free(x);
+-    return NULL;
++    goto ok;
++    ok:
++    self->private_impl.p_do_decode_image_config = 0;
++    goto exit;
+   }
+-  return x;
+-}
+-
+-size_t
+-sizeof__wuffs_gzip__decoder(void) {
+-  return sizeof(wuffs_gzip__decoder);
+-}
+ 
+-// ---------------- Function Implementations
+-
+-// -------- func gzip.decoder.get_quirk
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_gzip__decoder__get_quirk(
+-    const wuffs_gzip__decoder* self,
+-    uint32_t a_key) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+-  if ((a_key == 1u) && self->private_impl.f_ignore_checksum) {
+-    return 1u;
+-  }
+-  return 0u;
++  goto exit;
++  exit:
++  return status;
+ }
+ 
+-// -------- func gzip.decoder.set_quirk
++// -------- func gif.decoder.set_report_metadata
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_gzip__decoder__set_quirk(
+-    wuffs_gzip__decoder* self,
+-    uint32_t a_key,
+-    uint64_t a_value) {
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_gif__decoder__set_report_metadata(
++    wuffs_gif__decoder* self,
++    uint32_t a_fourcc,
++    bool a_report) {
+   if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++    return wuffs_base__make_empty_struct();
+   }
+   if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-
+-  if (a_key == 1u) {
+-    self->private_impl.f_ignore_checksum = (a_value > 0u);
+-    return wuffs_base__make_status(NULL);
+-  }
+-  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
+-}
+-
+-// -------- func gzip.decoder.history_retain_length
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_gzip__decoder__history_retain_length(
+-    const wuffs_gzip__decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
++    return wuffs_base__make_empty_struct();
+   }
+ 
+-  return 0u;
+-}
+-
+-// -------- func gzip.decoder.workbuf_len
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_gzip__decoder__workbuf_len(
+-    const wuffs_gzip__decoder* self) {
+-  if (!self) {
+-    return wuffs_base__utility__empty_range_ii_u64();
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_range_ii_u64();
++  if (a_fourcc == 1229144912u) {
++    self->private_impl.f_report_metadata_iccp = a_report;
++  } else if (a_fourcc == 1481461792u) {
++    self->private_impl.f_report_metadata_xmp = a_report;
+   }
+-
+-  return wuffs_base__utility__make_range_ii_u64(1u, 1u);
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-// -------- func gzip.decoder.transform_io
++// -------- func gif.decoder.tell_me_more
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_gzip__decoder__transform_io(
+-    wuffs_gzip__decoder* self,
++wuffs_gif__decoder__tell_me_more(
++    wuffs_gif__decoder* self,
+     wuffs_base__io_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__slice_u8 a_workbuf) {
++    wuffs_base__more_information* a_minfo,
++    wuffs_base__io_buffer* a_src) {
+   if (!self) {
+     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+@@ -39737,7 +41163,7 @@ wuffs_gzip__decoder__transform_io(
+     return wuffs_base__make_status(wuffs_base__error__bad_argument);
+   }
+   if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 1)) {
++      (self->private_impl.active_coroutine != 2)) {
+     self->private_impl.magic = WUFFS_BASE__DISABLED;
+     return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+   }
+@@ -39746,17 +41172,17 @@ wuffs_gzip__decoder__transform_io(
+ 
+   wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_transform_io[0];
++  uint32_t coro_susp_point = self->private_impl.p_tell_me_more;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+     while (true) {
+       {
+-        wuffs_base__status t_0 = wuffs_gzip__decoder__do_transform_io(self, a_dst, a_src, a_workbuf);
++        wuffs_base__status t_0 = wuffs_gif__decoder__do_tell_me_more(self, a_dst, a_minfo, a_src);
+         v_status = t_0;
+       }
+       if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_gzip__error__truncated_input);
++        status = wuffs_base__make_status(wuffs_gif__error__truncated_input);
+         goto exit;
+       }
+       status = v_status;
+@@ -39764,14 +41190,14 @@ wuffs_gzip__decoder__transform_io(
+     }
+ 
+     ok:
+-    self->private_impl.p_transform_io[0] = 0;
++    self->private_impl.p_tell_me_more = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
++  self->private_impl.p_tell_me_more = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
+ 
+   goto exit;
+   exit:
+@@ -39781,40 +41207,19 @@ wuffs_gzip__decoder__transform_io(
+   return status;
+ }
+ 
+-// -------- func gzip.decoder.do_transform_io
++// -------- func gif.decoder.do_tell_me_more
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_gzip__decoder__do_transform_io(
+-    wuffs_gzip__decoder* self,
++wuffs_gif__decoder__do_tell_me_more(
++    wuffs_gif__decoder* self,
+     wuffs_base__io_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__slice_u8 a_workbuf) {
++    wuffs_base__more_information* a_minfo,
++    wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint8_t v_c = 0;
+-  uint8_t v_flags = 0;
+-  uint16_t v_xlen = 0;
+-  uint64_t v_mark = 0;
+-  uint32_t v_checksum_got = 0;
+-  uint32_t v_decoded_length_got = 0;
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-  uint32_t v_checksum_want = 0;
+-  uint32_t v_decoded_length_want = 0;
++  uint64_t v_chunk_length = 0;
+ 
+-  uint8_t* iop_a_dst = NULL;
+-  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_dst && a_dst->data.ptr) {
+-    io0_a_dst = a_dst->data.ptr;
+-    io1_a_dst = io0_a_dst + a_dst->meta.wi;
+-    iop_a_dst = io1_a_dst;
+-    io2_a_dst = io0_a_dst + a_dst->data.len;
+-    if (a_dst->meta.closed) {
+-      io2_a_dst = iop_a_dst;
+-    }
+-  }
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -39826,269 +41231,95 @@ wuffs_gzip__decoder__do_transform_io(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_transform_io[0];
+-  if (coro_susp_point) {
+-    v_flags = self->private_data.s_do_transform_io[0].v_flags;
+-    v_checksum_got = self->private_data.s_do_transform_io[0].v_checksum_got;
+-    v_decoded_length_got = self->private_data.s_do_transform_io[0].v_decoded_length_got;
+-    v_checksum_want = self->private_data.s_do_transform_io[0].v_checksum_want;
+-  }
++  uint32_t coro_susp_point = self->private_impl.p_do_tell_me_more;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_0 = *iop_a_src++;
+-      v_c = t_0;
+-    }
+-    if (v_c != 31u) {
+-      status = wuffs_base__make_status(wuffs_gzip__error__bad_header);
+-      goto exit;
+-    }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_1 = *iop_a_src++;
+-      v_c = t_1;
+-    }
+-    if (v_c != 139u) {
+-      status = wuffs_base__make_status(wuffs_gzip__error__bad_header);
++    if (((uint8_t)(self->private_impl.f_call_sequence & 16u)) == 0u) {
++      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
+       goto exit;
+     }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_2 = *iop_a_src++;
+-      v_c = t_2;
+-    }
+-    if (v_c != 8u) {
+-      status = wuffs_base__make_status(wuffs_gzip__error__bad_compression_method);
++    if (self->private_impl.f_metadata_fourcc == 0u) {
++      status = wuffs_base__make_status(wuffs_base__error__no_more_information);
+       goto exit;
+     }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_3 = *iop_a_src++;
+-      v_flags = t_3;
+-    }
+-    self->private_data.s_do_transform_io[0].scratch = 6u;
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-    if (self->private_data.s_do_transform_io[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-      self->private_data.s_do_transform_io[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-      iop_a_src = io2_a_src;
+-      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-      goto suspend;
+-    }
+-    iop_a_src += self->private_data.s_do_transform_io[0].scratch;
+-    if ((v_flags & 4u) != 0u) {
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-        uint16_t t_4;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-          t_4 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
+-          iop_a_src += 2;
+-        } else {
+-          self->private_data.s_do_transform_io[0].scratch = 0;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch;
+-            uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
+-            *scratch <<= 8;
+-            *scratch >>= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
+-            if (num_bits_4 == 8) {
+-              t_4 = ((uint16_t)(*scratch));
+-              break;
+-            }
+-            num_bits_4 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_4)) << 56;
+-          }
+-        }
+-        v_xlen = t_4;
+-      }
+-      self->private_data.s_do_transform_io[0].scratch = ((uint32_t)(v_xlen));
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
+-      if (self->private_data.s_do_transform_io[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-        self->private_data.s_do_transform_io[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-        iop_a_src = io2_a_src;
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      iop_a_src += self->private_data.s_do_transform_io[0].scratch;
+-    }
+-    if ((v_flags & 8u) != 0u) {
++    while (true) {
+       while (true) {
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
++        if (wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))) != self->private_impl.f_metadata_io_position) {
++          if (a_minfo != NULL) {
++            wuffs_base__more_information__set(a_minfo,
++                2u,
++                0u,
++                self->private_impl.f_metadata_io_position,
++                0u,
++                0u);
+           }
+-          uint8_t t_5 = *iop_a_src++;
+-          v_c = t_5;
+-        }
+-        if (v_c == 0u) {
+-          break;
++          status = wuffs_base__make_status(wuffs_base__suspension__mispositioned_read);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++          continue;
+         }
+-      }
+-    }
+-    if ((v_flags & 16u) != 0u) {
+-      while (true) {
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
++        if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++          if (a_minfo != NULL) {
++            wuffs_base__more_information__set(a_minfo,
++                0u,
++                0u,
++                0u,
++                0u,
++                0u);
+           }
+-          uint8_t t_6 = *iop_a_src++;
+-          v_c = t_6;
+-        }
+-        if (v_c == 0u) {
+-          break;
+-        }
+-      }
+-    }
+-    if ((v_flags & 2u) != 0u) {
+-      self->private_data.s_do_transform_io[0].scratch = 2u;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
+-      if (self->private_data.s_do_transform_io[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-        self->private_data.s_do_transform_io[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-        iop_a_src = io2_a_src;
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      iop_a_src += self->private_data.s_do_transform_io[0].scratch;
+-    }
+-    if ((v_flags & 224u) != 0u) {
+-      status = wuffs_base__make_status(wuffs_gzip__error__bad_encoding_flags);
+-      goto exit;
+-    }
+-    while (true) {
+-      v_mark = ((uint64_t)(iop_a_dst - io0_a_dst));
+-      {
+-        if (a_dst) {
+-          a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-        }
+-        if (a_src) {
+-          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-        }
+-        wuffs_base__status t_7 = wuffs_deflate__decoder__transform_io(&self->private_data.f_flate, a_dst, a_src, a_workbuf);
+-        v_status = t_7;
+-        if (a_dst) {
+-          iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
+-        }
+-        if (a_src) {
+-          iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
++          continue;
+         }
++        break;
+       }
+-      if ( ! self->private_impl.f_ignore_checksum) {
+-        v_checksum_got = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_checksum, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
+-        v_decoded_length_got += ((uint32_t)(wuffs_base__io__count_since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)))));
+-      }
+-      if (wuffs_base__status__is_ok(&v_status)) {
++      v_chunk_length = ((uint64_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src)));
++      if (v_chunk_length <= 0u) {
++        iop_a_src += 1u;
+         break;
+       }
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(12);
+-    }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
+-      uint32_t t_8;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_8 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-        iop_a_src += 4;
++      if (self->private_impl.f_metadata_fourcc == 1481461792u) {
++        v_chunk_length += 1u;
+       } else {
+-        self->private_data.s_do_transform_io[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch;
+-          uint32_t num_bits_8 = ((uint32_t)(*scratch >> 56));
+-          *scratch <<= 8;
+-          *scratch >>= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_8;
+-          if (num_bits_8 == 24) {
+-            t_8 = ((uint32_t)(*scratch));
+-            break;
+-          }
+-          num_bits_8 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_8)) << 56;
+-        }
++        iop_a_src += 1u;
+       }
+-      v_checksum_want = t_8;
+-    }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
+-      uint32_t t_9;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_9 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-        iop_a_src += 4;
+-      } else {
+-        self->private_data.s_do_transform_io[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch;
+-          uint32_t num_bits_9 = ((uint32_t)(*scratch >> 56));
+-          *scratch <<= 8;
+-          *scratch >>= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_9;
+-          if (num_bits_9 == 24) {
+-            t_9 = ((uint32_t)(*scratch));
+-            break;
+-          }
+-          num_bits_9 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_9)) << 56;
+-        }
++      self->private_impl.f_metadata_io_position = wuffs_base__u64__sat_add(wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))), v_chunk_length);
++      if (a_minfo != NULL) {
++        wuffs_base__more_information__set(a_minfo,
++            3u,
++            self->private_impl.f_metadata_fourcc,
++            0u,
++            wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))),
++            self->private_impl.f_metadata_io_position);
+       }
+-      v_decoded_length_want = t_9;
++      status = wuffs_base__make_status(wuffs_base__suspension__even_more_information);
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
+     }
+-    if ( ! self->private_impl.f_ignore_checksum && ((v_checksum_got != v_checksum_want) || (v_decoded_length_got != v_decoded_length_want))) {
+-      status = wuffs_base__make_status(wuffs_gzip__error__bad_checksum);
+-      goto exit;
++    if (a_minfo != NULL) {
++      wuffs_base__more_information__set(a_minfo,
++          3u,
++          self->private_impl.f_metadata_fourcc,
++          0u,
++          self->private_impl.f_metadata_io_position,
++          self->private_impl.f_metadata_io_position);
+     }
++    self->private_impl.f_call_sequence &= 239u;
++    self->private_impl.f_metadata_fourcc = 0u;
++    self->private_impl.f_metadata_io_position = 0u;
++    status = wuffs_base__make_status(NULL);
++    goto ok;
+ 
+     ok:
+-    self->private_impl.p_do_transform_io[0] = 0;
++    self->private_impl.p_do_tell_me_more = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_do_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_do_transform_io[0].v_flags = v_flags;
+-  self->private_data.s_do_transform_io[0].v_checksum_got = v_checksum_got;
+-  self->private_data.s_do_transform_io[0].v_decoded_length_got = v_decoded_length_got;
+-  self->private_data.s_do_transform_io[0].v_checksum_want = v_checksum_want;
++  self->private_impl.p_do_tell_me_more = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+   goto exit;
+   exit:
+-  if (a_dst && a_dst->data.ptr) {
+-    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-  }
+   if (a_src && a_src->data.ptr) {
+     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+@@ -40096,2260 +41327,1143 @@ wuffs_gzip__decoder__do_transform_io(
+   return status;
+ }
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GZIP)
+-
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JPEG)
++// -------- func gif.decoder.num_animation_loops
+ 
+-// ---------------- Status Codes Implementations
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_gif__decoder__num_animation_loops(
++    const wuffs_gif__decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
+ 
+-const char wuffs_jpeg__error__bad_dht_marker[] = "#jpeg: bad DHT marker";
+-const char wuffs_jpeg__error__bad_dqt_marker[] = "#jpeg: bad DQT marker";
+-const char wuffs_jpeg__error__bad_dri_marker[] = "#jpeg: bad DRI marker";
+-const char wuffs_jpeg__error__bad_sof_marker[] = "#jpeg: bad SOF marker";
+-const char wuffs_jpeg__error__bad_sos_marker[] = "#jpeg: bad SOS marker";
+-const char wuffs_jpeg__error__bad_header[] = "#jpeg: bad header";
+-const char wuffs_jpeg__error__bad_marker[] = "#jpeg: bad marker";
+-const char wuffs_jpeg__error__missing_huffman_table[] = "#jpeg: missing Huffman table";
+-const char wuffs_jpeg__error__missing_quantization_table[] = "#jpeg: missing Quantization table";
+-const char wuffs_jpeg__error__truncated_input[] = "#jpeg: truncated input";
+-const char wuffs_jpeg__error__unsupported_arithmetic_coding[] = "#jpeg: unsupported arithmetic coding";
+-const char wuffs_jpeg__error__unsupported_color_model[] = "#jpeg: unsupported color model";
+-const char wuffs_jpeg__error__unsupported_fractional_sampling[] = "#jpeg: unsupported fractional sampling";
+-const char wuffs_jpeg__error__unsupported_hierarchical_coding[] = "#jpeg: unsupported hierarchical coding";
+-const char wuffs_jpeg__error__unsupported_implicit_height[] = "#jpeg: unsupported implicit height";
+-const char wuffs_jpeg__error__unsupported_lossless_coding[] = "#jpeg: unsupported lossless coding";
+-const char wuffs_jpeg__error__unsupported_marker[] = "#jpeg: unsupported marker";
+-const char wuffs_jpeg__error__unsupported_precision_12_bits[] = "#jpeg: unsupported precision (12 bits)";
+-const char wuffs_jpeg__error__unsupported_precision_16_bits[] = "#jpeg: unsupported precision (16 bits)";
+-const char wuffs_jpeg__error__unsupported_precision[] = "#jpeg: unsupported precision";
+-const char wuffs_jpeg__error__unsupported_scan_count[] = "#jpeg: unsupported scan count";
+-const char wuffs_jpeg__error__internal_error_inconsistent_decoder_state[] = "#jpeg: internal error: inconsistent decoder state";
++  if (self->private_impl.f_seen_num_animation_loops_value) {
++    return self->private_impl.f_num_animation_loops_value;
++  }
++  if (self->private_impl.f_num_decoded_frame_configs_value > 1u) {
++    return 1u;
++  }
++  return 0u;
++}
+ 
+-// ---------------- Private Consts
++// -------- func gif.decoder.num_decoded_frame_configs
+ 
+-static const uint8_t
+-WUFFS_JPEG__UNZIG[80] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  0, 0, 1, 8, 16, 9, 2, 3,
+-  10, 17, 24, 32, 25, 18, 11, 4,
+-  5, 12, 19, 26, 33, 40, 48, 41,
+-  34, 27, 20, 13, 6, 7, 14, 21,
+-  28, 35, 42, 49, 56, 57, 50, 43,
+-  36, 29, 22, 15, 23, 30, 37, 44,
+-  51, 58, 59, 52, 45, 38, 31, 39,
+-  46, 53, 60, 61, 54, 47, 55, 62,
+-  63, 63, 63, 63, 63, 63, 63, 63,
+-  63, 63, 63, 63, 63, 63, 63, 63,
+-};
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_gif__decoder__num_decoded_frame_configs(
++    const wuffs_gif__decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
+ 
+-static const uint8_t
+-WUFFS_JPEG__BIAS_AND_CLAMP[1024] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  128, 129, 130, 131, 132, 133, 134, 135,
+-  136, 137, 138, 139, 140, 141, 142, 143,
+-  144, 145, 146, 147, 148, 149, 150, 151,
+-  152, 153, 154, 155, 156, 157, 158, 159,
+-  160, 161, 162, 163, 164, 165, 166, 167,
+-  168, 169, 170, 171, 172, 173, 174, 175,
+-  176, 177, 178, 179, 180, 181, 182, 183,
+-  184, 185, 186, 187, 188, 189, 190, 191,
+-  192, 193, 194, 195, 196, 197, 198, 199,
+-  200, 201, 202, 203, 204, 205, 206, 207,
+-  208, 209, 210, 211, 212, 213, 214, 215,
+-  216, 217, 218, 219, 220, 221, 222, 223,
+-  224, 225, 226, 227, 228, 229, 230, 231,
+-  232, 233, 234, 235, 236, 237, 238, 239,
+-  240, 241, 242, 243, 244, 245, 246, 247,
+-  248, 249, 250, 251, 252, 253, 254, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  255, 255, 255, 255, 255, 255, 255, 255,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 1, 2, 3, 4, 5, 6, 7,
+-  8, 9, 10, 11, 12, 13, 14, 15,
+-  16, 17, 18, 19, 20, 21, 22, 23,
+-  24, 25, 26, 27, 28, 29, 30, 31,
+-  32, 33, 34, 35, 36, 37, 38, 39,
+-  40, 41, 42, 43, 44, 45, 46, 47,
+-  48, 49, 50, 51, 52, 53, 54, 55,
+-  56, 57, 58, 59, 60, 61, 62, 63,
+-  64, 65, 66, 67, 68, 69, 70, 71,
+-  72, 73, 74, 75, 76, 77, 78, 79,
+-  80, 81, 82, 83, 84, 85, 86, 87,
+-  88, 89, 90, 91, 92, 93, 94, 95,
+-  96, 97, 98, 99, 100, 101, 102, 103,
+-  104, 105, 106, 107, 108, 109, 110, 111,
+-  112, 113, 114, 115, 116, 117, 118, 119,
+-  120, 121, 122, 123, 124, 125, 126, 127,
+-};
++  return self->private_impl.f_num_decoded_frame_configs_value;
++}
+ 
+-static const uint16_t
+-WUFFS_JPEG__EXTEND[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  0, 65535, 65533, 65529, 65521, 65505, 65473, 65409,
+-  65281, 65025, 64513, 63489, 61441, 57345, 49153, 32769,
+-};
++// -------- func gif.decoder.num_decoded_frames
+ 
+-static const uint8_t
+-WUFFS_JPEG__DEFAULT_HUFF_TABLE_DC_LUMA[29] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  0, 0, 1, 5, 1, 1, 1, 1,
+-  1, 1, 0, 0, 0, 0, 0, 0,
+-  0, 0, 1, 2, 3, 4, 5, 6,
+-  7, 8, 9, 10, 11,
+-};
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_gif__decoder__num_decoded_frames(
++    const wuffs_gif__decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
+ 
+-static const uint8_t
+-WUFFS_JPEG__DEFAULT_HUFF_TABLE_DC_CHROMA[29] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  1, 0, 3, 1, 1, 1, 1, 1,
+-  1, 1, 1, 1, 0, 0, 0, 0,
+-  0, 0, 1, 2, 3, 4, 5, 6,
+-  7, 8, 9, 10, 11,
+-};
++  return self->private_impl.f_num_decoded_frames_value;
++}
+ 
+-static const uint8_t
+-WUFFS_JPEG__DEFAULT_HUFF_TABLE_AC_LUMA[179] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  16, 0, 2, 1, 3, 3, 2, 4,
+-  3, 5, 5, 4, 4, 0, 0, 1,
+-  125, 1, 2, 3, 0, 4, 17, 5,
+-  18, 33, 49, 65, 6, 19, 81, 97,
+-  7, 34, 113, 20, 50, 129, 145, 161,
+-  8, 35, 66, 177, 193, 21, 82, 209,
+-  240, 36, 51, 98, 114, 130, 9, 10,
+-  22, 23, 24, 25, 26, 37, 38, 39,
+-  40, 41, 42, 52, 53, 54, 55, 56,
+-  57, 58, 67, 68, 69, 70, 71, 72,
+-  73, 74, 83, 84, 85, 86, 87, 88,
+-  89, 90, 99, 100, 101, 102, 103, 104,
+-  105, 106, 115, 116, 117, 118, 119, 120,
+-  121, 122, 131, 132, 133, 134, 135, 136,
+-  137, 138, 146, 147, 148, 149, 150, 151,
+-  152, 153, 154, 162, 163, 164, 165, 166,
+-  167, 168, 169, 170, 178, 179, 180, 181,
+-  182, 183, 184, 185, 186, 194, 195, 196,
+-  197, 198, 199, 200, 201, 202, 210, 211,
+-  212, 213, 214, 215, 216, 217, 218, 225,
+-  226, 227, 228, 229, 230, 231, 232, 233,
+-  234, 241, 242, 243, 244, 245, 246, 247,
+-  248, 249, 250,
+-};
++// -------- func gif.decoder.frame_dirty_rect
+ 
+-static const uint8_t
+-WUFFS_JPEG__DEFAULT_HUFF_TABLE_AC_CHROMA[179] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  17, 0, 2, 1, 2, 4, 4, 3,
+-  4, 7, 5, 4, 4, 0, 1, 2,
+-  119, 0, 1, 2, 3, 17, 4, 5,
+-  33, 49, 6, 18, 65, 81, 7, 97,
+-  113, 19, 34, 50, 129, 8, 20, 66,
+-  145, 161, 177, 193, 9, 35, 51, 82,
+-  240, 21, 98, 114, 209, 10, 22, 36,
+-  52, 225, 37, 241, 23, 24, 25, 26,
+-  38, 39, 40, 41, 42, 53, 54, 55,
+-  56, 57, 58, 67, 68, 69, 70, 71,
+-  72, 73, 74, 83, 84, 85, 86, 87,
+-  88, 89, 90, 99, 100, 101, 102, 103,
+-  104, 105, 106, 115, 116, 117, 118, 119,
+-  120, 121, 122, 130, 131, 132, 133, 134,
+-  135, 136, 137, 138, 146, 147, 148, 149,
+-  150, 151, 152, 153, 154, 162, 163, 164,
+-  165, 166, 167, 168, 169, 170, 178, 179,
+-  180, 181, 182, 183, 184, 185, 186, 194,
+-  195, 196, 197, 198, 199, 200, 201, 202,
+-  210, 211, 212, 213, 214, 215, 216, 217,
+-  218, 226, 227, 228, 229, 230, 231, 232,
+-  233, 234, 242, 243, 244, 245, 246, 247,
+-  248, 249, 250,
+-};
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
++wuffs_gif__decoder__frame_dirty_rect(
++    const wuffs_gif__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_rect_ie_u32();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_rect_ie_u32();
++  }
+ 
+-// ---------------- Private Initializer Prototypes
++  return wuffs_base__utility__make_rect_ie_u32(
++      wuffs_base__u32__min(self->private_impl.f_frame_rect_x0, self->private_impl.f_width),
++      wuffs_base__u32__min(self->private_impl.f_frame_rect_y0, self->private_impl.f_height),
++      wuffs_base__u32__min(self->private_impl.f_frame_rect_x1, self->private_impl.f_width),
++      wuffs_base__u32__min(self->private_impl.f_dirty_max_excl_y, self->private_impl.f_height));
++}
+ 
+-// ---------------- Private Function Prototypes
++// -------- func gif.decoder.workbuf_len
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_jpeg__decoder__decode_idct(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__slice_u8 a_dst_buffer,
+-    uint64_t a_dst_stride,
+-    uint32_t a_q);
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_gif__decoder__workbuf_len(
++    const wuffs_gif__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_jpeg__decoder__decode_idct__choosy_default(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__slice_u8 a_dst_buffer,
+-    uint64_t a_dst_stride,
+-    uint32_t a_q);
++  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
++}
+ 
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_jpeg__decoder__decode_idct_x86_avx2(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__slice_u8 a_dst_buffer,
+-    uint64_t a_dst_stride,
+-    uint32_t a_q);
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_64)
++// -------- func gif.decoder.restart_frame
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_jpeg__decoder__do_decode_image_config(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__image_config* a_dst,
+-    wuffs_base__io_buffer* a_src);
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_gif__decoder__restart_frame(
++    wuffs_gif__decoder* self,
++    uint64_t a_index,
++    uint64_t a_io_position) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_jpeg__decoder__decode_dqt(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__io_buffer* a_src);
++  if (self->private_impl.f_call_sequence < 32u) {
++    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++  } else if (a_io_position == 0u) {
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  self->private_impl.f_delayed_num_decoded_frames = false;
++  self->private_impl.f_frame_config_io_position = a_io_position;
++  self->private_impl.f_num_decoded_frame_configs_value = a_index;
++  self->private_impl.f_num_decoded_frames_value = a_index;
++  wuffs_gif__decoder__reset_gc(self);
++  self->private_impl.f_call_sequence = 40u;
++  return wuffs_base__make_status(NULL);
++}
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_jpeg__decoder__decode_dri(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__io_buffer* a_src);
++// -------- func gif.decoder.decode_frame_config
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_jpeg__decoder__decode_appn(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__io_buffer* a_src,
+-    uint8_t a_marker);
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_gif__decoder__decode_frame_config(
++    wuffs_gif__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 3)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_jpeg__decoder__decode_sof(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__io_buffer* a_src);
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static uint32_t
+-wuffs_jpeg__decoder__quantize_dimension(
+-    const wuffs_jpeg__decoder* self,
+-    uint32_t a_width,
+-    uint8_t a_h,
+-    uint8_t a_max_incl_h);
++  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_jpeg__decoder__do_decode_frame_config(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__frame_config* a_dst,
+-    wuffs_base__io_buffer* a_src);
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_gif__decoder__do_decode_frame_config(self, a_dst, a_src);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_gif__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_jpeg__decoder__do_decode_frame(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts);
++    ok:
++    self->private_impl.p_decode_frame_config = 0;
++    goto exit;
++  }
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_jpeg__decoder__decode_dht(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__io_buffer* a_src);
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static bool
+-wuffs_jpeg__decoder__calculate_huff_tables(
+-    wuffs_jpeg__decoder* self,
+-    uint8_t a_tc4_th,
+-    uint32_t a_total_count);
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_jpeg__decoder__decode_sos(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__slice_u8 a_workbuf);
++// -------- func gif.decoder.do_decode_frame_config
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_jpeg__decoder__prepare_scan(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__io_buffer* a_src);
++wuffs_gif__decoder__do_decode_frame_config(
++    wuffs_gif__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_jpeg__decoder__use_default_huffman_table(
+-    wuffs_jpeg__decoder* self,
+-    uint8_t a_tc4_th);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_jpeg__decoder__calculate_single_component_scan_fields(
+-    wuffs_jpeg__decoder* self);
++  uint32_t v_background_color = 0;
++  uint8_t v_flags = 0;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static bool
+-wuffs_jpeg__decoder__calculate_multiple_component_scan_fields(
+-    wuffs_jpeg__decoder* self);
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_jpeg__decoder__fill_bitstream(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__io_buffer* a_src);
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config;
++  if (coro_susp_point) {
++    v_background_color = self->private_data.s_do_decode_frame_config.v_background_color;
++  }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_jpeg__decoder__load_mcu_blocks_for_single_component(
+-    wuffs_jpeg__decoder* self,
+-    uint32_t a_mx,
+-    uint32_t a_my,
+-    wuffs_base__slice_u8 a_workbuf,
+-    uint32_t a_csel);
++    self->private_impl.f_dirty_max_excl_y = 0u;
++    if (((uint8_t)(self->private_impl.f_call_sequence & 16u)) != 0u) {
++      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++      goto exit;
++    } else if (self->private_impl.f_call_sequence == 32u) {
++    } else if (self->private_impl.f_call_sequence < 32u) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      status = wuffs_gif__decoder__do_decode_image_config(self, NULL, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++    } else if (self->private_impl.f_call_sequence == 40u) {
++      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
++        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
++        goto exit;
++      }
++    } else if (self->private_impl.f_call_sequence == 64u) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++      status = wuffs_gif__decoder__skip_frame(self, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++      if (self->private_impl.f_call_sequence >= 96u) {
++        status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++        goto ok;
++      }
++    } else {
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
++    }
++    if ((self->private_impl.f_num_decoded_frame_configs_value > 0u) || (self->private_impl.f_call_sequence == 40u)) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++      status = wuffs_gif__decoder__decode_up_to_id_part1(self, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++      if (self->private_impl.f_call_sequence >= 96u) {
++        status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++        goto ok;
++      }
++    }
++    v_background_color = self->private_impl.f_black_color_u32_argb_premul;
++    if ( ! self->private_impl.f_gc_has_transparent_index) {
++      v_background_color = self->private_impl.f_background_color_u32_argb_premul;
++      if (self->private_impl.f_quirks[1u] && (self->private_impl.f_num_decoded_frame_configs_value == 0u)) {
++        while (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
++        }
++        v_flags = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++        if (((uint8_t)(v_flags & 128u)) != 0u) {
++          v_background_color = self->private_impl.f_black_color_u32_argb_premul;
++        }
++      }
++    }
++    if (a_dst != NULL) {
++      wuffs_base__frame_config__set(
++          a_dst,
++          wuffs_base__utility__make_rect_ie_u32(
++          wuffs_base__u32__min(self->private_impl.f_frame_rect_x0, self->private_impl.f_width),
++          wuffs_base__u32__min(self->private_impl.f_frame_rect_y0, self->private_impl.f_height),
++          wuffs_base__u32__min(self->private_impl.f_frame_rect_x1, self->private_impl.f_width),
++          wuffs_base__u32__min(self->private_impl.f_frame_rect_y1, self->private_impl.f_height)),
++          ((wuffs_base__flicks)(self->private_impl.f_gc_duration)),
++          self->private_impl.f_num_decoded_frame_configs_value,
++          self->private_impl.f_frame_config_io_position,
++          self->private_impl.f_gc_disposal,
++          ! self->private_impl.f_gc_has_transparent_index,
++          false,
++          v_background_color);
++    }
++    wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frame_configs_value, 1u);
++    self->private_impl.f_call_sequence = 64u;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_jpeg__decoder__load_mcu_blocks_for_single_component__choosy_default(
+-    wuffs_jpeg__decoder* self,
+-    uint32_t a_mx,
+-    uint32_t a_my,
+-    wuffs_base__slice_u8 a_workbuf,
+-    uint32_t a_csel);
++    ok:
++    self->private_impl.p_do_decode_frame_config = 0;
++    goto exit;
++  }
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_jpeg__decoder__load_mcu_blocks(
+-    wuffs_jpeg__decoder* self,
+-    uint32_t a_mx,
+-    uint32_t a_my,
+-    wuffs_base__slice_u8 a_workbuf);
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_do_decode_frame_config.v_background_color = v_background_color;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_jpeg__decoder__save_mcu_blocks(
+-    wuffs_jpeg__decoder* self,
+-    uint32_t a_mx,
+-    uint32_t a_my,
+-    wuffs_base__slice_u8 a_workbuf);
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_jpeg__decoder__skip_past_the_next_restart_marker(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__io_buffer* a_src);
++  return status;
++}
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_jpeg__decoder__apply_progressive_idct(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__slice_u8 a_workbuf);
++// -------- func gif.decoder.skip_frame
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_jpeg__decoder__swizzle_gray(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__slice_u8 a_workbuf);
++wuffs_gif__decoder__skip_frame(
++    wuffs_gif__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_jpeg__decoder__swizzle_colorful(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__slice_u8 a_workbuf);
++  uint8_t v_flags = 0;
++  uint8_t v_lw = 0;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static bool
+-wuffs_jpeg__decoder__top_left_quants_has_zero(
+-    const wuffs_jpeg__decoder* self,
+-    uint32_t a_q);
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_jpeg__decoder__load_mcu_blocks_for_single_component_smooth(
+-    wuffs_jpeg__decoder* self,
+-    uint32_t a_mx,
+-    uint32_t a_my,
+-    wuffs_base__slice_u8 a_workbuf,
+-    uint32_t a_csel);
++  uint32_t coro_susp_point = self->private_impl.p_skip_frame;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static uint32_t
+-wuffs_jpeg__decoder__decode_mcu(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__slice_u8 a_workbuf,
+-    uint32_t a_mx,
+-    uint32_t a_my);
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_0 = *iop_a_src++;
++      v_flags = t_0;
++    }
++    if (((uint8_t)(v_flags & 128u)) != 0u) {
++      self->private_data.s_skip_frame.scratch = (((uint32_t)(3u)) << ((uint8_t)(1u + ((uint8_t)(v_flags & 7u)))));
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++      if (self->private_data.s_skip_frame.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++        self->private_data.s_skip_frame.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++        iop_a_src = io2_a_src;
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      iop_a_src += self->private_data.s_skip_frame.scratch;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_1 = *iop_a_src++;
++      v_lw = t_1;
++    }
++    if (v_lw > 8u) {
++      status = wuffs_base__make_status(wuffs_gif__error__bad_literal_width);
++      goto exit;
++    }
++    if (a_src) {
++      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++    }
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++    status = wuffs_gif__decoder__skip_blocks(self, a_src);
++    if (a_src) {
++      iop_a_src = a_src->data.ptr + a_src->meta.ri;
++    }
++    if (status.repr) {
++      goto suspend;
++    }
++    if (self->private_impl.f_quirks[0u]) {
++      self->private_impl.f_delayed_num_decoded_frames = true;
++    } else {
++      wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
++    }
++    wuffs_gif__decoder__reset_gc(self);
++    self->private_impl.f_call_sequence = 32u;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static uint32_t
+-wuffs_jpeg__decoder__decode_mcu__choosy_default(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__slice_u8 a_workbuf,
+-    uint32_t a_mx,
+-    uint32_t a_my);
++    goto ok;
++    ok:
++    self->private_impl.p_skip_frame = 0;
++    goto exit;
++  }
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static uint32_t
+-wuffs_jpeg__decoder__decode_mcu_progressive_ac_high_bits(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__slice_u8 a_workbuf,
+-    uint32_t a_mx,
+-    uint32_t a_my);
++  goto suspend;
++  suspend:
++  self->private_impl.p_skip_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static uint32_t
+-wuffs_jpeg__decoder__decode_mcu_progressive_ac_low_bit(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__slice_u8 a_workbuf,
+-    uint32_t a_mx,
+-    uint32_t a_my);
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static uint32_t
+-wuffs_jpeg__decoder__decode_mcu_progressive_dc_high_bits(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__slice_u8 a_workbuf,
+-    uint32_t a_mx,
+-    uint32_t a_my);
++  return status;
++}
++
++// -------- func gif.decoder.decode_frame
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static uint32_t
+-wuffs_jpeg__decoder__decode_mcu_progressive_dc_low_bit(
+-    wuffs_jpeg__decoder* self,
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_gif__decoder__decode_frame(
++    wuffs_gif__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
+     wuffs_base__slice_u8 a_workbuf,
+-    uint32_t a_mx,
+-    uint32_t a_my);
+-
+-// ---------------- VTables
+-
+-const wuffs_base__image_decoder__func_ptrs
+-wuffs_jpeg__decoder__func_ptrs_for__wuffs_base__image_decoder = {
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__pixel_buffer*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__pixel_blend,
+-      wuffs_base__slice_u8,
+-      wuffs_base__decode_frame_options*))(&wuffs_jpeg__decoder__decode_frame),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__frame_config*,
+-      wuffs_base__io_buffer*))(&wuffs_jpeg__decoder__decode_frame_config),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__image_config*,
+-      wuffs_base__io_buffer*))(&wuffs_jpeg__decoder__decode_image_config),
+-  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_jpeg__decoder__frame_dirty_rect),
+-  (uint64_t(*)(const void*,
+-      uint32_t))(&wuffs_jpeg__decoder__get_quirk),
+-  (uint64_t(*)(const void*))(&wuffs_jpeg__decoder__history_retain_length),
+-  (uint32_t(*)(const void*))(&wuffs_jpeg__decoder__num_animation_loops),
+-  (uint64_t(*)(const void*))(&wuffs_jpeg__decoder__num_decoded_frame_configs),
+-  (uint64_t(*)(const void*))(&wuffs_jpeg__decoder__num_decoded_frames),
+-  (wuffs_base__status(*)(void*,
+-      uint64_t,
+-      uint64_t))(&wuffs_jpeg__decoder__restart_frame),
+-  (wuffs_base__status(*)(void*,
+-      uint32_t,
+-      uint64_t))(&wuffs_jpeg__decoder__set_quirk),
+-  (wuffs_base__empty_struct(*)(void*,
+-      uint32_t,
+-      bool))(&wuffs_jpeg__decoder__set_report_metadata),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__more_information*,
+-      wuffs_base__io_buffer*))(&wuffs_jpeg__decoder__tell_me_more),
+-  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_jpeg__decoder__workbuf_len),
+-};
+-
+-// ---------------- Initializer Implementations
+-
+-wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_jpeg__decoder__initialize(
+-    wuffs_jpeg__decoder* self,
+-    size_t sizeof_star_self,
+-    uint64_t wuffs_version,
+-    uint32_t options){
++    wuffs_base__decode_frame_options* a_opts) {
+   if (!self) {
+     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+-  if (sizeof(*self) != sizeof_star_self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
+   }
+-  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
+-      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++  if (!a_dst || !a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+   }
+-
+-  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
+-    // The whole point of this if-check is to detect an uninitialized *self.
+-    // We disable the warning on GCC. Clang-5.0 does not have this warning.
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+-#endif
+-    if (self->private_impl.magic != 0) {
+-      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
+-    }
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-  } else {
+-    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
+-      memset(self, 0, sizeof(*self));
+-      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
+-    } else {
+-      memset(&(self->private_impl), 0, sizeof(self->private_impl));
+-    }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 4)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+   }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  self->private_impl.choosy_decode_idct = &wuffs_jpeg__decoder__decode_idct__choosy_default;
+-  self->private_impl.choosy_load_mcu_blocks_for_single_component = &wuffs_jpeg__decoder__load_mcu_blocks_for_single_component__choosy_default;
+-  self->private_impl.choosy_decode_mcu = &wuffs_jpeg__decoder__decode_mcu__choosy_default;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-  self->private_impl.magic = WUFFS_BASE__MAGIC;
+-  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
+-      wuffs_base__image_decoder__vtable_name;
+-  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
+-      (const void*)(&wuffs_jpeg__decoder__func_ptrs_for__wuffs_base__image_decoder);
+-  return wuffs_base__make_status(NULL);
+-}
++  uint32_t coro_susp_point = self->private_impl.p_decode_frame;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-wuffs_jpeg__decoder*
+-wuffs_jpeg__decoder__alloc(void) {
+-  wuffs_jpeg__decoder* x =
+-      (wuffs_jpeg__decoder*)(calloc(sizeof(wuffs_jpeg__decoder), 1));
+-  if (!x) {
+-    return NULL;
+-  }
+-  if (wuffs_jpeg__decoder__initialize(
+-      x, sizeof(wuffs_jpeg__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
+-    free(x);
+-    return NULL;
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_gif__decoder__do_decode_frame(self,
++            a_dst,
++            a_src,
++            a_blend,
++            a_workbuf,
++            a_opts);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_gif__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++
++    ok:
++    self->private_impl.p_decode_frame = 0;
++    goto exit;
+   }
+-  return x;
+-}
+ 
+-size_t
+-sizeof__wuffs_jpeg__decoder(void) {
+-  return sizeof(wuffs_jpeg__decoder);
+-}
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 4 : 0;
+ 
+-// ---------------- Function Implementations
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
+ 
+-// -------- func jpeg.decoder.decode_idct
++// -------- func gif.decoder.do_decode_frame
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_jpeg__decoder__decode_idct(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__slice_u8 a_dst_buffer,
+-    uint64_t a_dst_stride,
+-    uint32_t a_q) {
+-  return (*self->private_impl.choosy_decode_idct)(self, a_dst_buffer, a_dst_stride, a_q);
+-}
++static wuffs_base__status
++wuffs_gif__decoder__do_decode_frame(
++    wuffs_gif__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_jpeg__decoder__decode_idct__choosy_default(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__slice_u8 a_dst_buffer,
+-    uint64_t a_dst_stride,
+-    uint32_t a_q) {
+-  uint32_t v_bq0 = 0;
+-  uint32_t v_bq2 = 0;
+-  uint32_t v_bq4 = 0;
+-  uint32_t v_bq6 = 0;
+-  uint32_t v_ca = 0;
+-  uint32_t v_cb2 = 0;
+-  uint32_t v_cb6 = 0;
+-  uint32_t v_ccp = 0;
+-  uint32_t v_ccm = 0;
+-  uint32_t v_cd0 = 0;
+-  uint32_t v_cd1 = 0;
+-  uint32_t v_cd2 = 0;
+-  uint32_t v_cd3 = 0;
+-  uint32_t v_bq1 = 0;
+-  uint32_t v_bq3 = 0;
+-  uint32_t v_bq5 = 0;
+-  uint32_t v_bq7 = 0;
+-  uint32_t v_ci51 = 0;
+-  uint32_t v_ci53 = 0;
+-  uint32_t v_ci71 = 0;
+-  uint32_t v_ci73 = 0;
+-  uint32_t v_cj = 0;
+-  uint32_t v_ck1 = 0;
+-  uint32_t v_ck3 = 0;
+-  uint32_t v_ck5 = 0;
+-  uint32_t v_ck7 = 0;
+-  uint32_t v_cl51 = 0;
+-  uint32_t v_cl73 = 0;
+-  uint32_t v_in0 = 0;
+-  uint32_t v_in2 = 0;
+-  uint32_t v_in4 = 0;
+-  uint32_t v_in6 = 0;
+-  uint32_t v_ra = 0;
+-  uint32_t v_rb2 = 0;
+-  uint32_t v_rb6 = 0;
+-  uint32_t v_rcp = 0;
+-  uint32_t v_rcm = 0;
+-  uint32_t v_rd0 = 0;
+-  uint32_t v_rd1 = 0;
+-  uint32_t v_rd2 = 0;
+-  uint32_t v_rd3 = 0;
+-  uint32_t v_in1 = 0;
+-  uint32_t v_in3 = 0;
+-  uint32_t v_in5 = 0;
+-  uint32_t v_in7 = 0;
+-  uint32_t v_ri51 = 0;
+-  uint32_t v_ri53 = 0;
+-  uint32_t v_ri71 = 0;
+-  uint32_t v_ri73 = 0;
+-  uint32_t v_rj = 0;
+-  uint32_t v_rk1 = 0;
+-  uint32_t v_rk3 = 0;
+-  uint32_t v_rk5 = 0;
+-  uint32_t v_rk7 = 0;
+-  uint32_t v_rl51 = 0;
+-  uint32_t v_rl73 = 0;
+-  uint32_t v_intermediate[64] = {0};
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-  if (8u > a_dst_stride) {
+-    return wuffs_base__make_empty_struct();
+-  }
+-  if (0u == (self->private_data.f_mcu_blocks[0u][8u] |
+-      self->private_data.f_mcu_blocks[0u][16u] |
+-      self->private_data.f_mcu_blocks[0u][24u] |
+-      self->private_data.f_mcu_blocks[0u][32u] |
+-      self->private_data.f_mcu_blocks[0u][40u] |
+-      self->private_data.f_mcu_blocks[0u][48u] |
+-      self->private_data.f_mcu_blocks[0u][56u])) {
+-    v_intermediate[0u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][0u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][0u])))) << 2u));
+-    v_intermediate[8u] = v_intermediate[0u];
+-    v_intermediate[16u] = v_intermediate[0u];
+-    v_intermediate[24u] = v_intermediate[0u];
+-    v_intermediate[32u] = v_intermediate[0u];
+-    v_intermediate[40u] = v_intermediate[0u];
+-    v_intermediate[48u] = v_intermediate[0u];
+-    v_intermediate[56u] = v_intermediate[0u];
+-  } else {
+-    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][16u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][16u]))));
+-    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][48u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][48u]))));
+-    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
+-    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
+-    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
+-    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][0u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][0u]))));
+-    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][32u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][32u]))));
+-    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
+-    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
+-    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
+-    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
+-    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
+-    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
+-    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][8u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][8u]))));
+-    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][24u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][24u]))));
+-    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][40u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][40u]))));
+-    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][56u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][56u]))));
+-    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
+-    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
+-    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
+-    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
+-    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
+-    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
+-    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
+-    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
+-    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
+-    v_ci51 *= 4294964100u;
+-    v_ci53 *= 4294946301u;
+-    v_ci71 *= 4294959923u;
+-    v_ci73 *= 4294951227u;
+-    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
+-    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
+-    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
+-    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
+-    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
+-    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
+-    v_intermediate[0u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
+-    v_intermediate[56u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
+-    v_intermediate[8u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
+-    v_intermediate[48u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
+-    v_intermediate[16u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
+-    v_intermediate[40u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
+-    v_intermediate[24u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
+-    v_intermediate[32u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
++    if (self->private_impl.f_call_sequence == 64u) {
++    } else if (self->private_impl.f_call_sequence < 64u) {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      status = wuffs_gif__decoder__do_decode_frame_config(self, NULL, a_src);
++      if (status.repr) {
++        goto suspend;
++      }
++    } else {
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
++    }
++    if (self->private_impl.f_quirks[5u] && ((self->private_impl.f_frame_rect_x0 == self->private_impl.f_frame_rect_x1) || (self->private_impl.f_frame_rect_y0 == self->private_impl.f_frame_rect_y1))) {
++      status = wuffs_base__make_status(wuffs_gif__error__bad_frame_size);
++      goto exit;
++    }
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++    status = wuffs_gif__decoder__decode_id_part1(self, a_dst, a_src, a_blend);
++    if (status.repr) {
++      goto suspend;
++    }
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++    status = wuffs_gif__decoder__decode_id_part2(self, a_dst, a_src, a_workbuf);
++    if (status.repr) {
++      goto suspend;
++    }
++    wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
++    wuffs_gif__decoder__reset_gc(self);
++    self->private_impl.f_call_sequence = 32u;
++
++    ok:
++    self->private_impl.p_do_decode_frame = 0;
++    goto exit;
+   }
+-  if (0u == (self->private_data.f_mcu_blocks[0u][9u] |
+-      self->private_data.f_mcu_blocks[0u][17u] |
+-      self->private_data.f_mcu_blocks[0u][25u] |
+-      self->private_data.f_mcu_blocks[0u][33u] |
+-      self->private_data.f_mcu_blocks[0u][41u] |
+-      self->private_data.f_mcu_blocks[0u][49u] |
+-      self->private_data.f_mcu_blocks[0u][57u])) {
+-    v_intermediate[1u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][1u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][1u])))) << 2u));
+-    v_intermediate[9u] = v_intermediate[1u];
+-    v_intermediate[17u] = v_intermediate[1u];
+-    v_intermediate[25u] = v_intermediate[1u];
+-    v_intermediate[33u] = v_intermediate[1u];
+-    v_intermediate[41u] = v_intermediate[1u];
+-    v_intermediate[49u] = v_intermediate[1u];
+-    v_intermediate[57u] = v_intermediate[1u];
+-  } else {
+-    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][17u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][17u]))));
+-    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][49u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][49u]))));
+-    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
+-    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
+-    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
+-    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][1u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][1u]))));
+-    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][33u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][33u]))));
+-    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
+-    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
+-    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
+-    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
+-    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
+-    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
+-    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][9u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][9u]))));
+-    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][25u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][25u]))));
+-    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][41u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][41u]))));
+-    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][57u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][57u]))));
+-    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
+-    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
+-    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
+-    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
+-    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
+-    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
+-    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
+-    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
+-    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
+-    v_ci51 *= 4294964100u;
+-    v_ci53 *= 4294946301u;
+-    v_ci71 *= 4294959923u;
+-    v_ci73 *= 4294951227u;
+-    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
+-    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
+-    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
+-    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
+-    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
+-    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
+-    v_intermediate[1u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
+-    v_intermediate[57u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
+-    v_intermediate[9u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
+-    v_intermediate[49u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
+-    v_intermediate[17u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
+-    v_intermediate[41u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
+-    v_intermediate[25u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
+-    v_intermediate[33u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  return status;
++}
++
++// -------- func gif.decoder.reset_gc
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_gif__decoder__reset_gc(
++    wuffs_gif__decoder* self) {
++  self->private_impl.f_gc_has_transparent_index = false;
++  self->private_impl.f_gc_transparent_index = 0u;
++  self->private_impl.f_gc_disposal = 0u;
++  self->private_impl.f_gc_duration = 0u;
++  return wuffs_base__make_empty_struct();
++}
++
++// -------- func gif.decoder.decode_up_to_id_part1
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_gif__decoder__decode_up_to_id_part1(
++    wuffs_gif__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_block_type = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+-  if (0u == (self->private_data.f_mcu_blocks[0u][10u] |
+-      self->private_data.f_mcu_blocks[0u][18u] |
+-      self->private_data.f_mcu_blocks[0u][26u] |
+-      self->private_data.f_mcu_blocks[0u][34u] |
+-      self->private_data.f_mcu_blocks[0u][42u] |
+-      self->private_data.f_mcu_blocks[0u][50u] |
+-      self->private_data.f_mcu_blocks[0u][58u])) {
+-    v_intermediate[2u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][2u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][2u])))) << 2u));
+-    v_intermediate[10u] = v_intermediate[2u];
+-    v_intermediate[18u] = v_intermediate[2u];
+-    v_intermediate[26u] = v_intermediate[2u];
+-    v_intermediate[34u] = v_intermediate[2u];
+-    v_intermediate[42u] = v_intermediate[2u];
+-    v_intermediate[50u] = v_intermediate[2u];
+-    v_intermediate[58u] = v_intermediate[2u];
+-  } else {
+-    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][18u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][18u]))));
+-    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][50u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][50u]))));
+-    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
+-    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
+-    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
+-    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][2u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][2u]))));
+-    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][34u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][34u]))));
+-    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
+-    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
+-    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
+-    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
+-    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
+-    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
+-    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][10u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][10u]))));
+-    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][26u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][26u]))));
+-    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][42u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][42u]))));
+-    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][58u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][58u]))));
+-    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
+-    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
+-    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
+-    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
+-    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
+-    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
+-    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
+-    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
+-    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
+-    v_ci51 *= 4294964100u;
+-    v_ci53 *= 4294946301u;
+-    v_ci71 *= 4294959923u;
+-    v_ci73 *= 4294951227u;
+-    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
+-    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
+-    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
+-    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
+-    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
+-    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
+-    v_intermediate[2u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
+-    v_intermediate[58u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
+-    v_intermediate[10u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
+-    v_intermediate[50u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
+-    v_intermediate[18u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
+-    v_intermediate[42u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
+-    v_intermediate[26u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
+-    v_intermediate[34u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_up_to_id_part1;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if ((self->private_impl.f_frame_config_io_position == 0u) || (self->private_impl.f_num_decoded_frame_configs_value > 0u)) {
++      self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
++    }
++    while (true) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_0 = *iop_a_src++;
++        v_block_type = t_0;
++      }
++      if (v_block_type == 33u) {
++        if (a_src) {
++          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++        }
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++        status = wuffs_gif__decoder__decode_extension(self, a_src);
++        if (a_src) {
++          iop_a_src = a_src->data.ptr + a_src->meta.ri;
++        }
++        if (status.repr) {
++          goto suspend;
++        }
++      } else if (v_block_type == 44u) {
++        if (self->private_impl.f_delayed_num_decoded_frames) {
++          self->private_impl.f_delayed_num_decoded_frames = false;
++          wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
++        }
++        if (a_src) {
++          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++        }
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++        status = wuffs_gif__decoder__decode_id_part0(self, a_src);
++        if (a_src) {
++          iop_a_src = a_src->data.ptr + a_src->meta.ri;
++        }
++        if (status.repr) {
++          goto suspend;
++        }
++        break;
++      } else {
++        if (self->private_impl.f_delayed_num_decoded_frames) {
++          self->private_impl.f_delayed_num_decoded_frames = false;
++          wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
++        }
++        self->private_impl.f_call_sequence = 96u;
++        break;
++      }
++    }
++
++    goto ok;
++    ok:
++    self->private_impl.p_decode_up_to_id_part1 = 0;
++    goto exit;
+   }
+-  if (0u == (self->private_data.f_mcu_blocks[0u][11u] |
+-      self->private_data.f_mcu_blocks[0u][19u] |
+-      self->private_data.f_mcu_blocks[0u][27u] |
+-      self->private_data.f_mcu_blocks[0u][35u] |
+-      self->private_data.f_mcu_blocks[0u][43u] |
+-      self->private_data.f_mcu_blocks[0u][51u] |
+-      self->private_data.f_mcu_blocks[0u][59u])) {
+-    v_intermediate[3u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][3u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][3u])))) << 2u));
+-    v_intermediate[11u] = v_intermediate[3u];
+-    v_intermediate[19u] = v_intermediate[3u];
+-    v_intermediate[27u] = v_intermediate[3u];
+-    v_intermediate[35u] = v_intermediate[3u];
+-    v_intermediate[43u] = v_intermediate[3u];
+-    v_intermediate[51u] = v_intermediate[3u];
+-    v_intermediate[59u] = v_intermediate[3u];
+-  } else {
+-    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][19u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][19u]))));
+-    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][51u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][51u]))));
+-    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
+-    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
+-    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
+-    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][3u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][3u]))));
+-    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][35u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][35u]))));
+-    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
+-    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
+-    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
+-    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
+-    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
+-    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
+-    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][11u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][11u]))));
+-    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][27u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][27u]))));
+-    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][43u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][43u]))));
+-    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][59u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][59u]))));
+-    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
+-    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
+-    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
+-    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
+-    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
+-    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
+-    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
+-    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
+-    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
+-    v_ci51 *= 4294964100u;
+-    v_ci53 *= 4294946301u;
+-    v_ci71 *= 4294959923u;
+-    v_ci73 *= 4294951227u;
+-    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
+-    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
+-    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
+-    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
+-    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
+-    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
+-    v_intermediate[3u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
+-    v_intermediate[59u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
+-    v_intermediate[11u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
+-    v_intermediate[51u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
+-    v_intermediate[19u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
+-    v_intermediate[43u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
+-    v_intermediate[27u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
+-    v_intermediate[35u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_up_to_id_part1 = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+-  if (0u == (self->private_data.f_mcu_blocks[0u][12u] |
+-      self->private_data.f_mcu_blocks[0u][20u] |
+-      self->private_data.f_mcu_blocks[0u][28u] |
+-      self->private_data.f_mcu_blocks[0u][36u] |
+-      self->private_data.f_mcu_blocks[0u][44u] |
+-      self->private_data.f_mcu_blocks[0u][52u] |
+-      self->private_data.f_mcu_blocks[0u][60u])) {
+-    v_intermediate[4u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][4u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][4u])))) << 2u));
+-    v_intermediate[12u] = v_intermediate[4u];
+-    v_intermediate[20u] = v_intermediate[4u];
+-    v_intermediate[28u] = v_intermediate[4u];
+-    v_intermediate[36u] = v_intermediate[4u];
+-    v_intermediate[44u] = v_intermediate[4u];
+-    v_intermediate[52u] = v_intermediate[4u];
+-    v_intermediate[60u] = v_intermediate[4u];
+-  } else {
+-    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][20u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][20u]))));
+-    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][52u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][52u]))));
+-    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
+-    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
+-    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
+-    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][4u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][4u]))));
+-    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][36u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][36u]))));
+-    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
+-    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
+-    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
+-    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
+-    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
+-    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
+-    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][12u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][12u]))));
+-    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][28u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][28u]))));
+-    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][44u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][44u]))));
+-    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][60u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][60u]))));
+-    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
+-    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
+-    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
+-    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
+-    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
+-    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
+-    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
+-    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
+-    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
+-    v_ci51 *= 4294964100u;
+-    v_ci53 *= 4294946301u;
+-    v_ci71 *= 4294959923u;
+-    v_ci73 *= 4294951227u;
+-    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
+-    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
+-    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
+-    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
+-    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
+-    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
+-    v_intermediate[4u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
+-    v_intermediate[60u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
+-    v_intermediate[12u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
+-    v_intermediate[52u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
+-    v_intermediate[20u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
+-    v_intermediate[44u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
+-    v_intermediate[28u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
+-    v_intermediate[36u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
++
++  return status;
++}
++
++// -------- func gif.decoder.decode_header
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_gif__decoder__decode_header(
++    wuffs_gif__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint64_t v_c48 = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+-  if (0u == (self->private_data.f_mcu_blocks[0u][13u] |
+-      self->private_data.f_mcu_blocks[0u][21u] |
+-      self->private_data.f_mcu_blocks[0u][29u] |
+-      self->private_data.f_mcu_blocks[0u][37u] |
+-      self->private_data.f_mcu_blocks[0u][45u] |
+-      self->private_data.f_mcu_blocks[0u][53u] |
+-      self->private_data.f_mcu_blocks[0u][61u])) {
+-    v_intermediate[5u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][5u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][5u])))) << 2u));
+-    v_intermediate[13u] = v_intermediate[5u];
+-    v_intermediate[21u] = v_intermediate[5u];
+-    v_intermediate[29u] = v_intermediate[5u];
+-    v_intermediate[37u] = v_intermediate[5u];
+-    v_intermediate[45u] = v_intermediate[5u];
+-    v_intermediate[53u] = v_intermediate[5u];
+-    v_intermediate[61u] = v_intermediate[5u];
+-  } else {
+-    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][21u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][21u]))));
+-    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][53u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][53u]))));
+-    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
+-    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
+-    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
+-    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][5u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][5u]))));
+-    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][37u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][37u]))));
+-    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
+-    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
+-    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
+-    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
+-    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
+-    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
+-    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][13u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][13u]))));
+-    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][29u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][29u]))));
+-    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][45u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][45u]))));
+-    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][61u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][61u]))));
+-    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
+-    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
+-    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
+-    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
+-    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
+-    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
+-    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
+-    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
+-    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
+-    v_ci51 *= 4294964100u;
+-    v_ci53 *= 4294946301u;
+-    v_ci71 *= 4294959923u;
+-    v_ci73 *= 4294951227u;
+-    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
+-    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
+-    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
+-    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
+-    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
+-    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
+-    v_intermediate[5u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
+-    v_intermediate[61u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
+-    v_intermediate[13u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
+-    v_intermediate[53u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
+-    v_intermediate[21u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
+-    v_intermediate[45u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
+-    v_intermediate[29u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
+-    v_intermediate[37u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_header;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      uint64_t t_0;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 6)) {
++        t_0 = ((uint64_t)(wuffs_base__peek_u48le__no_bounds_check(iop_a_src)));
++        iop_a_src += 6;
++      } else {
++        self->private_data.s_decode_header.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_header.scratch;
++          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
++          *scratch <<= 8;
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
++          if (num_bits_0 == 40) {
++            t_0 = ((uint64_t)(*scratch));
++            break;
++          }
++          num_bits_0 += 8u;
++          *scratch |= ((uint64_t)(num_bits_0)) << 56;
++        }
++      }
++      v_c48 = t_0;
++    }
++    if ((v_c48 != 106889795225927u) && (v_c48 != 106898385160519u)) {
++      status = wuffs_base__make_status(wuffs_gif__error__bad_header);
++      goto exit;
++    }
++
++    goto ok;
++    ok:
++    self->private_impl.p_decode_header = 0;
++    goto exit;
+   }
+-  if (0u == (self->private_data.f_mcu_blocks[0u][14u] |
+-      self->private_data.f_mcu_blocks[0u][22u] |
+-      self->private_data.f_mcu_blocks[0u][30u] |
+-      self->private_data.f_mcu_blocks[0u][38u] |
+-      self->private_data.f_mcu_blocks[0u][46u] |
+-      self->private_data.f_mcu_blocks[0u][54u] |
+-      self->private_data.f_mcu_blocks[0u][62u])) {
+-    v_intermediate[6u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][6u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][6u])))) << 2u));
+-    v_intermediate[14u] = v_intermediate[6u];
+-    v_intermediate[22u] = v_intermediate[6u];
+-    v_intermediate[30u] = v_intermediate[6u];
+-    v_intermediate[38u] = v_intermediate[6u];
+-    v_intermediate[46u] = v_intermediate[6u];
+-    v_intermediate[54u] = v_intermediate[6u];
+-    v_intermediate[62u] = v_intermediate[6u];
+-  } else {
+-    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][22u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][22u]))));
+-    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][54u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][54u]))));
+-    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
+-    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
+-    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
+-    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][6u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][6u]))));
+-    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][38u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][38u]))));
+-    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
+-    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
+-    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
+-    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
+-    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
+-    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
+-    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][14u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][14u]))));
+-    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][30u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][30u]))));
+-    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][46u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][46u]))));
+-    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][62u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][62u]))));
+-    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
+-    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
+-    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
+-    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
+-    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
+-    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
+-    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
+-    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
+-    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
+-    v_ci51 *= 4294964100u;
+-    v_ci53 *= 4294946301u;
+-    v_ci71 *= 4294959923u;
+-    v_ci73 *= 4294951227u;
+-    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
+-    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
+-    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
+-    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
+-    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
+-    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
+-    v_intermediate[6u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
+-    v_intermediate[62u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
+-    v_intermediate[14u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
+-    v_intermediate[54u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
+-    v_intermediate[22u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
+-    v_intermediate[46u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
+-    v_intermediate[30u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
+-    v_intermediate[38u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_header = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+-  if (0u == (self->private_data.f_mcu_blocks[0u][15u] |
+-      self->private_data.f_mcu_blocks[0u][23u] |
+-      self->private_data.f_mcu_blocks[0u][31u] |
+-      self->private_data.f_mcu_blocks[0u][39u] |
+-      self->private_data.f_mcu_blocks[0u][47u] |
+-      self->private_data.f_mcu_blocks[0u][55u] |
+-      self->private_data.f_mcu_blocks[0u][63u])) {
+-    v_intermediate[7u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][7u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][7u])))) << 2u));
+-    v_intermediate[15u] = v_intermediate[7u];
+-    v_intermediate[23u] = v_intermediate[7u];
+-    v_intermediate[31u] = v_intermediate[7u];
+-    v_intermediate[39u] = v_intermediate[7u];
+-    v_intermediate[47u] = v_intermediate[7u];
+-    v_intermediate[55u] = v_intermediate[7u];
+-    v_intermediate[63u] = v_intermediate[7u];
+-  } else {
+-    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][23u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][23u]))));
+-    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][55u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][55u]))));
+-    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
+-    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
+-    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
+-    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][7u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][7u]))));
+-    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][39u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][39u]))));
+-    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
+-    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
+-    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
+-    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
+-    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
+-    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
+-    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][15u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][15u]))));
+-    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][31u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][31u]))));
+-    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][47u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][47u]))));
+-    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][63u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][63u]))));
+-    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
+-    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
+-    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
+-    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
+-    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
+-    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
+-    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
+-    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
+-    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
+-    v_ci51 *= 4294964100u;
+-    v_ci53 *= 4294946301u;
+-    v_ci71 *= 4294959923u;
+-    v_ci73 *= 4294951227u;
+-    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
+-    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
+-    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
+-    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
+-    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
+-    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
+-    v_intermediate[7u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
+-    v_intermediate[63u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
+-    v_intermediate[15u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
+-    v_intermediate[55u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
+-    v_intermediate[23u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
+-    v_intermediate[47u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
+-    v_intermediate[31u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
+-    v_intermediate[39u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
++
++  return status;
++}
++
++// -------- func gif.decoder.decode_lsd
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_gif__decoder__decode_lsd(
++    wuffs_gif__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_flags = 0;
++  uint8_t v_background_color_index = 0;
++  uint32_t v_num_palette_entries = 0;
++  uint32_t v_i = 0;
++  uint32_t v_j = 0;
++  uint32_t v_argb = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+-  if (0u == (v_intermediate[1u] |
+-      v_intermediate[2u] |
+-      v_intermediate[3u] |
+-      v_intermediate[4u] |
+-      v_intermediate[5u] |
+-      v_intermediate[6u] |
+-      v_intermediate[7u])) {
+-    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
+-      return wuffs_base__make_empty_struct();
+-    }
+-    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[0u] + 16u)) >> 5u) & 1023u)];
+-    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+-  } else {
+-    v_in2 = v_intermediate[2u];
+-    v_in6 = v_intermediate[6u];
+-    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
+-    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
+-    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
+-    v_in0 = v_intermediate[0u];
+-    v_in4 = v_intermediate[4u];
+-    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
+-    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
+-    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
+-    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
+-    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
+-    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
+-    v_in1 = v_intermediate[1u];
+-    v_in3 = v_intermediate[3u];
+-    v_in5 = v_intermediate[5u];
+-    v_in7 = v_intermediate[7u];
+-    v_ri51 = ((uint32_t)(v_in5 + v_in1));
+-    v_ri53 = ((uint32_t)(v_in5 + v_in3));
+-    v_ri71 = ((uint32_t)(v_in7 + v_in1));
+-    v_ri73 = ((uint32_t)(v_in7 + v_in3));
+-    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
+-    v_rk1 = ((uint32_t)(v_in1 * 12299u));
+-    v_rk3 = ((uint32_t)(v_in3 * 25172u));
+-    v_rk5 = ((uint32_t)(v_in5 * 16819u));
+-    v_rk7 = ((uint32_t)(v_in7 * 2446u));
+-    v_ri51 *= 4294964100u;
+-    v_ri53 *= 4294946301u;
+-    v_ri71 *= 4294959923u;
+-    v_ri73 *= 4294951227u;
+-    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
+-    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
+-    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
+-    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
+-    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
+-    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
+-    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
+-      return wuffs_base__make_empty_struct();
+-    }
+-    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_lsd;
++  if (coro_susp_point) {
++    v_flags = self->private_data.s_decode_lsd.v_flags;
++    v_background_color_index = self->private_data.s_decode_lsd.v_background_color_index;
++    v_num_palette_entries = self->private_data.s_decode_lsd.v_num_palette_entries;
++    v_i = self->private_data.s_decode_lsd.v_i;
+   }
+-  if (0u == (v_intermediate[9u] |
+-      v_intermediate[10u] |
+-      v_intermediate[11u] |
+-      v_intermediate[12u] |
+-      v_intermediate[13u] |
+-      v_intermediate[14u] |
+-      v_intermediate[15u])) {
+-    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
+-      return wuffs_base__make_empty_struct();
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      uint32_t t_0;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++        t_0 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
++        iop_a_src += 2;
++      } else {
++        self->private_data.s_decode_lsd.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_lsd.scratch;
++          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
++          *scratch <<= 8;
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
++          if (num_bits_0 == 8) {
++            t_0 = ((uint32_t)(*scratch));
++            break;
++          }
++          num_bits_0 += 8u;
++          *scratch |= ((uint64_t)(num_bits_0)) << 56;
++        }
++      }
++      self->private_impl.f_width = t_0;
+     }
+-    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[8u] + 16u)) >> 5u) & 1023u)];
+-    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+-  } else {
+-    v_in2 = v_intermediate[10u];
+-    v_in6 = v_intermediate[14u];
+-    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
+-    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
+-    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
+-    v_in0 = v_intermediate[8u];
+-    v_in4 = v_intermediate[12u];
+-    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
+-    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
+-    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
+-    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
+-    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
+-    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
+-    v_in1 = v_intermediate[9u];
+-    v_in3 = v_intermediate[11u];
+-    v_in5 = v_intermediate[13u];
+-    v_in7 = v_intermediate[15u];
+-    v_ri51 = ((uint32_t)(v_in5 + v_in1));
+-    v_ri53 = ((uint32_t)(v_in5 + v_in3));
+-    v_ri71 = ((uint32_t)(v_in7 + v_in1));
+-    v_ri73 = ((uint32_t)(v_in7 + v_in3));
+-    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
+-    v_rk1 = ((uint32_t)(v_in1 * 12299u));
+-    v_rk3 = ((uint32_t)(v_in3 * 25172u));
+-    v_rk5 = ((uint32_t)(v_in5 * 16819u));
+-    v_rk7 = ((uint32_t)(v_in7 * 2446u));
+-    v_ri51 *= 4294964100u;
+-    v_ri53 *= 4294946301u;
+-    v_ri71 *= 4294959923u;
+-    v_ri73 *= 4294951227u;
+-    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
+-    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
+-    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
+-    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
+-    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
+-    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
+-    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
+-      return wuffs_base__make_empty_struct();
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++      uint32_t t_1;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++        t_1 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
++        iop_a_src += 2;
++      } else {
++        self->private_data.s_decode_lsd.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_lsd.scratch;
++          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
++          *scratch <<= 8;
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
++          if (num_bits_1 == 8) {
++            t_1 = ((uint32_t)(*scratch));
++            break;
++          }
++          num_bits_1 += 8u;
++          *scratch |= ((uint64_t)(num_bits_1)) << 56;
++        }
++      }
++      self->private_impl.f_height = t_1;
+     }
+-    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+-  }
+-  if (0u == (v_intermediate[17u] |
+-      v_intermediate[18u] |
+-      v_intermediate[19u] |
+-      v_intermediate[20u] |
+-      v_intermediate[21u] |
+-      v_intermediate[22u] |
+-      v_intermediate[23u])) {
+-    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
+-      return wuffs_base__make_empty_struct();
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_2 = *iop_a_src++;
++      v_flags = t_2;
+     }
+-    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[16u] + 16u)) >> 5u) & 1023u)];
+-    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+-  } else {
+-    v_in2 = v_intermediate[18u];
+-    v_in6 = v_intermediate[22u];
+-    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
+-    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
+-    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
+-    v_in0 = v_intermediate[16u];
+-    v_in4 = v_intermediate[20u];
+-    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
+-    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
+-    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
+-    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
+-    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
+-    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
+-    v_in1 = v_intermediate[17u];
+-    v_in3 = v_intermediate[19u];
+-    v_in5 = v_intermediate[21u];
+-    v_in7 = v_intermediate[23u];
+-    v_ri51 = ((uint32_t)(v_in5 + v_in1));
+-    v_ri53 = ((uint32_t)(v_in5 + v_in3));
+-    v_ri71 = ((uint32_t)(v_in7 + v_in1));
+-    v_ri73 = ((uint32_t)(v_in7 + v_in3));
+-    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
+-    v_rk1 = ((uint32_t)(v_in1 * 12299u));
+-    v_rk3 = ((uint32_t)(v_in3 * 25172u));
+-    v_rk5 = ((uint32_t)(v_in5 * 16819u));
+-    v_rk7 = ((uint32_t)(v_in7 * 2446u));
+-    v_ri51 *= 4294964100u;
+-    v_ri53 *= 4294946301u;
+-    v_ri71 *= 4294959923u;
+-    v_ri73 *= 4294951227u;
+-    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
+-    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
+-    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
+-    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
+-    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
+-    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
+-    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
+-      return wuffs_base__make_empty_struct();
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_3 = *iop_a_src++;
++      v_background_color_index = t_3;
+     }
+-    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+-  }
+-  if (0u == (v_intermediate[25u] |
+-      v_intermediate[26u] |
+-      v_intermediate[27u] |
+-      v_intermediate[28u] |
+-      v_intermediate[29u] |
+-      v_intermediate[30u] |
+-      v_intermediate[31u])) {
+-    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
+-      return wuffs_base__make_empty_struct();
+-    }
+-    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[24u] + 16u)) >> 5u) & 1023u)];
+-    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+-  } else {
+-    v_in2 = v_intermediate[26u];
+-    v_in6 = v_intermediate[30u];
+-    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
+-    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
+-    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
+-    v_in0 = v_intermediate[24u];
+-    v_in4 = v_intermediate[28u];
+-    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
+-    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
+-    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
+-    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
+-    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
+-    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
+-    v_in1 = v_intermediate[25u];
+-    v_in3 = v_intermediate[27u];
+-    v_in5 = v_intermediate[29u];
+-    v_in7 = v_intermediate[31u];
+-    v_ri51 = ((uint32_t)(v_in5 + v_in1));
+-    v_ri53 = ((uint32_t)(v_in5 + v_in3));
+-    v_ri71 = ((uint32_t)(v_in7 + v_in1));
+-    v_ri73 = ((uint32_t)(v_in7 + v_in3));
+-    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
+-    v_rk1 = ((uint32_t)(v_in1 * 12299u));
+-    v_rk3 = ((uint32_t)(v_in3 * 25172u));
+-    v_rk5 = ((uint32_t)(v_in5 * 16819u));
+-    v_rk7 = ((uint32_t)(v_in7 * 2446u));
+-    v_ri51 *= 4294964100u;
+-    v_ri53 *= 4294946301u;
+-    v_ri71 *= 4294959923u;
+-    v_ri73 *= 4294951227u;
+-    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
+-    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
+-    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
+-    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
+-    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
+-    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
+-    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
+-      return wuffs_base__make_empty_struct();
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++    if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++      goto suspend;
+     }
+-    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+-  }
+-  if (0u == (v_intermediate[33u] |
+-      v_intermediate[34u] |
+-      v_intermediate[35u] |
+-      v_intermediate[36u] |
+-      v_intermediate[37u] |
+-      v_intermediate[38u] |
+-      v_intermediate[39u])) {
+-    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
+-      return wuffs_base__make_empty_struct();
++    iop_a_src++;
++    v_i = 0u;
++    self->private_impl.f_has_global_palette = (((uint8_t)(v_flags & 128u)) != 0u);
++    if (self->private_impl.f_has_global_palette) {
++      v_num_palette_entries = (((uint32_t)(1u)) << ((uint8_t)(1u + ((uint8_t)(v_flags & 7u)))));
++      while (v_i < v_num_palette_entries) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++          uint32_t t_4;
++          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
++            t_4 = ((uint32_t)(wuffs_base__peek_u24be__no_bounds_check(iop_a_src)));
++            iop_a_src += 3;
++          } else {
++            self->private_data.s_decode_lsd.scratch = 0;
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++            while (true) {
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint64_t* scratch = &self->private_data.s_decode_lsd.scratch;
++              uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFFu));
++              *scratch >>= 8;
++              *scratch <<= 8;
++              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4);
++              if (num_bits_4 == 16) {
++                t_4 = ((uint32_t)(*scratch >> 40));
++                break;
++              }
++              num_bits_4 += 8u;
++              *scratch |= ((uint64_t)(num_bits_4));
++            }
++          }
++          v_argb = t_4;
++        }
++        v_argb |= 4278190080u;
++        self->private_data.f_palettes[0u][((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u)));
++        self->private_data.f_palettes[0u][((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u)));
++        self->private_data.f_palettes[0u][((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u)));
++        self->private_data.f_palettes[0u][((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u)));
++        v_i += 1u;
++      }
++      if (self->private_impl.f_quirks[2u]) {
++        if ((v_background_color_index != 0u) && (((uint32_t)(v_background_color_index)) < v_num_palette_entries)) {
++          v_j = (4u * ((uint32_t)(v_background_color_index)));
++          self->private_impl.f_background_color_u32_argb_premul = ((((uint32_t)(self->private_data.f_palettes[0u][(v_j + 0u)])) << 0u) |
++              (((uint32_t)(self->private_data.f_palettes[0u][(v_j + 1u)])) << 8u) |
++              (((uint32_t)(self->private_data.f_palettes[0u][(v_j + 2u)])) << 16u) |
++              (((uint32_t)(self->private_data.f_palettes[0u][(v_j + 3u)])) << 24u));
++        } else {
++          self->private_impl.f_background_color_u32_argb_premul = 77u;
++        }
++      }
+     }
+-    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[32u] + 16u)) >> 5u) & 1023u)];
+-    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+-  } else {
+-    v_in2 = v_intermediate[34u];
+-    v_in6 = v_intermediate[38u];
+-    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
+-    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
+-    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
+-    v_in0 = v_intermediate[32u];
+-    v_in4 = v_intermediate[36u];
+-    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
+-    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
+-    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
+-    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
+-    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
+-    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
+-    v_in1 = v_intermediate[33u];
+-    v_in3 = v_intermediate[35u];
+-    v_in5 = v_intermediate[37u];
+-    v_in7 = v_intermediate[39u];
+-    v_ri51 = ((uint32_t)(v_in5 + v_in1));
+-    v_ri53 = ((uint32_t)(v_in5 + v_in3));
+-    v_ri71 = ((uint32_t)(v_in7 + v_in1));
+-    v_ri73 = ((uint32_t)(v_in7 + v_in3));
+-    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
+-    v_rk1 = ((uint32_t)(v_in1 * 12299u));
+-    v_rk3 = ((uint32_t)(v_in3 * 25172u));
+-    v_rk5 = ((uint32_t)(v_in5 * 16819u));
+-    v_rk7 = ((uint32_t)(v_in7 * 2446u));
+-    v_ri51 *= 4294964100u;
+-    v_ri53 *= 4294946301u;
+-    v_ri71 *= 4294959923u;
+-    v_ri73 *= 4294951227u;
+-    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
+-    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
+-    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
+-    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
+-    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
+-    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
+-    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
+-      return wuffs_base__make_empty_struct();
++    while (v_i < 256u) {
++      self->private_data.f_palettes[0u][((4u * v_i) + 0u)] = 0u;
++      self->private_data.f_palettes[0u][((4u * v_i) + 1u)] = 0u;
++      self->private_data.f_palettes[0u][((4u * v_i) + 2u)] = 0u;
++      self->private_data.f_palettes[0u][((4u * v_i) + 3u)] = 255u;
++      v_i += 1u;
+     }
+-    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
++
++    goto ok;
++    ok:
++    self->private_impl.p_decode_lsd = 0;
++    goto exit;
+   }
+-  if (0u == (v_intermediate[41u] |
+-      v_intermediate[42u] |
+-      v_intermediate[43u] |
+-      v_intermediate[44u] |
+-      v_intermediate[45u] |
+-      v_intermediate[46u] |
+-      v_intermediate[47u])) {
+-    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
+-      return wuffs_base__make_empty_struct();
+-    }
+-    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[40u] + 16u)) >> 5u) & 1023u)];
+-    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+-  } else {
+-    v_in2 = v_intermediate[42u];
+-    v_in6 = v_intermediate[46u];
+-    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
+-    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
+-    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
+-    v_in0 = v_intermediate[40u];
+-    v_in4 = v_intermediate[44u];
+-    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
+-    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
+-    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
+-    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
+-    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
+-    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
+-    v_in1 = v_intermediate[41u];
+-    v_in3 = v_intermediate[43u];
+-    v_in5 = v_intermediate[45u];
+-    v_in7 = v_intermediate[47u];
+-    v_ri51 = ((uint32_t)(v_in5 + v_in1));
+-    v_ri53 = ((uint32_t)(v_in5 + v_in3));
+-    v_ri71 = ((uint32_t)(v_in7 + v_in1));
+-    v_ri73 = ((uint32_t)(v_in7 + v_in3));
+-    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
+-    v_rk1 = ((uint32_t)(v_in1 * 12299u));
+-    v_rk3 = ((uint32_t)(v_in3 * 25172u));
+-    v_rk5 = ((uint32_t)(v_in5 * 16819u));
+-    v_rk7 = ((uint32_t)(v_in7 * 2446u));
+-    v_ri51 *= 4294964100u;
+-    v_ri53 *= 4294946301u;
+-    v_ri71 *= 4294959923u;
+-    v_ri73 *= 4294951227u;
+-    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
+-    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
+-    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
+-    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
+-    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
+-    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
+-    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
+-      return wuffs_base__make_empty_struct();
+-    }
+-    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_lsd = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_lsd.v_flags = v_flags;
++  self->private_data.s_decode_lsd.v_background_color_index = v_background_color_index;
++  self->private_data.s_decode_lsd.v_num_palette_entries = v_num_palette_entries;
++  self->private_data.s_decode_lsd.v_i = v_i;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+-  if (0u == (v_intermediate[49u] |
+-      v_intermediate[50u] |
+-      v_intermediate[51u] |
+-      v_intermediate[52u] |
+-      v_intermediate[53u] |
+-      v_intermediate[54u] |
+-      v_intermediate[55u])) {
+-    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
+-      return wuffs_base__make_empty_struct();
++
++  return status;
++}
++
++// -------- func gif.decoder.decode_extension
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_gif__decoder__decode_extension(
++    wuffs_gif__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_label = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_extension;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_0 = *iop_a_src++;
++      v_label = t_0;
+     }
+-    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[48u] + 16u)) >> 5u) & 1023u)];
+-    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+-  } else {
+-    v_in2 = v_intermediate[50u];
+-    v_in6 = v_intermediate[54u];
+-    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
+-    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
+-    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
+-    v_in0 = v_intermediate[48u];
+-    v_in4 = v_intermediate[52u];
+-    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
+-    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
+-    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
+-    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
+-    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
+-    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
+-    v_in1 = v_intermediate[49u];
+-    v_in3 = v_intermediate[51u];
+-    v_in5 = v_intermediate[53u];
+-    v_in7 = v_intermediate[55u];
+-    v_ri51 = ((uint32_t)(v_in5 + v_in1));
+-    v_ri53 = ((uint32_t)(v_in5 + v_in3));
+-    v_ri71 = ((uint32_t)(v_in7 + v_in1));
+-    v_ri73 = ((uint32_t)(v_in7 + v_in3));
+-    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
+-    v_rk1 = ((uint32_t)(v_in1 * 12299u));
+-    v_rk3 = ((uint32_t)(v_in3 * 25172u));
+-    v_rk5 = ((uint32_t)(v_in5 * 16819u));
+-    v_rk7 = ((uint32_t)(v_in7 * 2446u));
+-    v_ri51 *= 4294964100u;
+-    v_ri53 *= 4294946301u;
+-    v_ri71 *= 4294959923u;
+-    v_ri73 *= 4294951227u;
+-    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
+-    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
+-    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
+-    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
+-    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
+-    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
+-    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
+-      return wuffs_base__make_empty_struct();
++    if (v_label == 249u) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++      status = wuffs_gif__decoder__decode_gc(self, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++      status = wuffs_base__make_status(NULL);
++      goto ok;
++    } else if (v_label == 255u) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++      status = wuffs_gif__decoder__decode_ae(self, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++      status = wuffs_base__make_status(NULL);
++      goto ok;
+     }
+-    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+-  }
+-  if (0u == (v_intermediate[57u] |
+-      v_intermediate[58u] |
+-      v_intermediate[59u] |
+-      v_intermediate[60u] |
+-      v_intermediate[61u] |
+-      v_intermediate[62u] |
+-      v_intermediate[63u])) {
+-    if (8u > ((uint64_t)(a_dst_buffer.len))) {
+-      return wuffs_base__make_empty_struct();
++    if (a_src) {
++      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+     }
+-    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[56u] + 16u)) >> 5u) & 1023u)];
+-    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
+-    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
+-  } else {
+-    v_in2 = v_intermediate[58u];
+-    v_in6 = v_intermediate[62u];
+-    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
+-    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
+-    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
+-    v_in0 = v_intermediate[56u];
+-    v_in4 = v_intermediate[60u];
+-    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
+-    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
+-    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
+-    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
+-    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
+-    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
+-    v_in1 = v_intermediate[57u];
+-    v_in3 = v_intermediate[59u];
+-    v_in5 = v_intermediate[61u];
+-    v_in7 = v_intermediate[63u];
+-    v_ri51 = ((uint32_t)(v_in5 + v_in1));
+-    v_ri53 = ((uint32_t)(v_in5 + v_in3));
+-    v_ri71 = ((uint32_t)(v_in7 + v_in1));
+-    v_ri73 = ((uint32_t)(v_in7 + v_in3));
+-    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
+-    v_rk1 = ((uint32_t)(v_in1 * 12299u));
+-    v_rk3 = ((uint32_t)(v_in3 * 25172u));
+-    v_rk5 = ((uint32_t)(v_in5 * 16819u));
+-    v_rk7 = ((uint32_t)(v_in7 * 2446u));
+-    v_ri51 *= 4294964100u;
+-    v_ri53 *= 4294946301u;
+-    v_ri71 *= 4294959923u;
+-    v_ri73 *= 4294951227u;
+-    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
+-    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
+-    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
+-    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
+-    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
+-    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
+-    if (8u > ((uint64_t)(a_dst_buffer.len))) {
+-      return wuffs_base__make_empty_struct();
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++    status = wuffs_gif__decoder__skip_blocks(self, a_src);
++    if (a_src) {
++      iop_a_src = a_src->data.ptr + a_src->meta.ri;
+     }
+-    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
+-    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
++    if (status.repr) {
++      goto suspend;
++    }
++
++    ok:
++    self->private_impl.p_decode_extension = 0;
++    goto exit;
+   }
+-  return wuffs_base__make_empty_struct();
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_extension = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
+ }
+ 
+-// ‼ WUFFS MULTI-FILE SECTION +x86_avx2
+-// -------- func jpeg.decoder.decode_idct_x86_avx2
++// -------- func gif.decoder.skip_blocks
+ 
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
+-WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_jpeg__decoder__decode_idct_x86_avx2(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__slice_u8 a_dst_buffer,
+-    uint64_t a_dst_stride,
+-    uint32_t a_q) {
+-  __m256i v_k_0000 = {0};
+-  __m256i v_k_8080 = {0};
+-  __m256i v_k_0000_0002 = {0};
+-  __m256i v_k_0001_FFFF = {0};
+-  __m256i v_k_0400_0000 = {0};
+-  __m256i v_k_29CF_1151_D630_1151 = {0};
+-  __m256i v_k_E333_133E_ADFD_1051 = {0};
+-  __m256i v_k_E6DC_25A1_1925_25A1 = {0};
+-  __m256i v_k_ECC1_E333_EFB0_ADFD = {0};
+-  __m128i v_az_coeffs = {0};
+-  __m256i v_az_ah00 = {0};
+-  __m256i v_az_ad00 = {0};
+-  __m256i v_az_eh00 = {0};
+-  __m256i v_az_adeh = {0};
+-  __m256i v_rows01 = {0};
+-  __m256i v_rows23 = {0};
+-  __m256i v_rows45 = {0};
+-  __m256i v_rows67 = {0};
+-  __m256i v_quants01 = {0};
+-  __m256i v_quants23 = {0};
+-  __m256i v_quants45 = {0};
+-  __m256i v_quants67 = {0};
+-  __m256i v_rows04 = {0};
+-  __m256i v_rows31 = {0};
+-  __m256i v_rows26 = {0};
+-  __m256i v_rows75 = {0};
+-  __m256i v_fp_rows62 = {0};
+-  __m256i v_fp_bq2662ad = {0};
+-  __m256i v_fp_bq2662eh = {0};
+-  __m256i v_fp_cb26ad = {0};
+-  __m256i v_fp_cb26eh = {0};
+-  __m256i v_fp_rows40pos = {0};
+-  __m256i v_fp_rows04neg = {0};
+-  __m256i v_fp_rows0pm4 = {0};
+-  __m256i v_fp_ccpmad = {0};
+-  __m256i v_fp_ccpmeh = {0};
+-  __m256i v_fp_cd01ad = {0};
+-  __m256i v_fp_cd01eh = {0};
+-  __m256i v_fp_cd32ad = {0};
+-  __m256i v_fp_cd32eh = {0};
+-  __m256i v_fp_sums7351 = {0};
+-  __m256i v_fp_sums5173 = {0};
+-  __m256i v_fp_ci73515173ad = {0};
+-  __m256i v_fp_ci73515173eh = {0};
+-  __m256i v_fp_cl7351ad = {0};
+-  __m256i v_fp_cl7351eh = {0};
+-  __m256i v_fp_rows13 = {0};
+-  __m256i v_fp_bq7153ad = {0};
+-  __m256i v_fp_bq7153eh = {0};
+-  __m256i v_fp_ck75ad = {0};
+-  __m256i v_fp_ck75eh = {0};
+-  __m256i v_fp_cl5173ad = {0};
+-  __m256i v_fp_cl5173eh = {0};
+-  __m256i v_fp_ck13ad = {0};
+-  __m256i v_fp_ck13eh = {0};
+-  __m256i v_intermediate01ad = {0};
+-  __m256i v_intermediate01eh = {0};
+-  __m256i v_intermediate01 = {0};
+-  __m256i v_intermediate32ad = {0};
+-  __m256i v_intermediate32eh = {0};
+-  __m256i v_intermediate32 = {0};
+-  __m256i v_intermediate45ad = {0};
+-  __m256i v_intermediate45eh = {0};
+-  __m256i v_intermediate45 = {0};
+-  __m256i v_intermediate76ad = {0};
+-  __m256i v_intermediate76eh = {0};
+-  __m256i v_intermediate76 = {0};
+-  __m256i v_ita0a1e0e1 = {0};
+-  __m256i v_ita2a3e2e3 = {0};
+-  __m256i v_ita4a5e4e5 = {0};
+-  __m256i v_ita6a7e6e7 = {0};
+-  __m256i v_ita0c0e0g0 = {0};
+-  __m256i v_ita1c1e1g1 = {0};
+-  __m256i v_ita4c4e4g4 = {0};
+-  __m256i v_ita5c5e5g5 = {0};
+-  __m256i v_ita0b0e0f0 = {0};
+-  __m256i v_ita4b4e4f4 = {0};
+-  __m256i v_itc0d0g0h0 = {0};
+-  __m256i v_itc4d4g4h4 = {0};
+-  __m256i v_intermediateae = {0};
+-  __m256i v_intermediatebf = {0};
+-  __m256i v_intermediatecg = {0};
+-  __m256i v_intermediatedh = {0};
+-  __m256i v_intermediatedb = {0};
+-  __m256i v_intermediatehf = {0};
+-  __m256i v_sp_cols62 = {0};
+-  __m256i v_sp_bq2662ad = {0};
+-  __m256i v_sp_bq2662eh = {0};
+-  __m256i v_sp_rb26ad = {0};
+-  __m256i v_sp_rb26eh = {0};
+-  __m256i v_sp_cols40pos = {0};
+-  __m256i v_sp_cols04neg = {0};
+-  __m256i v_sp_cols0pm4 = {0};
+-  __m256i v_sp_rcpmad = {0};
+-  __m256i v_sp_rcpmeh = {0};
+-  __m256i v_sp_rd01ad = {0};
+-  __m256i v_sp_rd01eh = {0};
+-  __m256i v_sp_rd32ad = {0};
+-  __m256i v_sp_rd32eh = {0};
+-  __m256i v_sp_sums7351 = {0};
+-  __m256i v_sp_sums5173 = {0};
+-  __m256i v_sp_ri73515173ad = {0};
+-  __m256i v_sp_ri73515173eh = {0};
+-  __m256i v_sp_rl7351ad = {0};
+-  __m256i v_sp_rl7351eh = {0};
+-  __m256i v_sp_cols13 = {0};
+-  __m256i v_sp_bq7153ad = {0};
+-  __m256i v_sp_bq7153eh = {0};
+-  __m256i v_sp_rk75ad = {0};
+-  __m256i v_sp_rk75eh = {0};
+-  __m256i v_sp_rl5173ad = {0};
+-  __m256i v_sp_rl5173eh = {0};
+-  __m256i v_sp_rk13ad = {0};
+-  __m256i v_sp_rk13eh = {0};
+-  __m256i v_final01ad = {0};
+-  __m256i v_final01eh = {0};
+-  __m256i v_final01 = {0};
+-  __m256i v_final32ad = {0};
+-  __m256i v_final32eh = {0};
+-  __m256i v_final32 = {0};
+-  __m256i v_final45ad = {0};
+-  __m256i v_final45eh = {0};
+-  __m256i v_final45 = {0};
+-  __m256i v_final76ad = {0};
+-  __m256i v_final76eh = {0};
+-  __m256i v_final76 = {0};
+-  __m256i v_fta0a1e0e1 = {0};
+-  __m256i v_fta2a3e2e3 = {0};
+-  __m256i v_fta4a5e4e5 = {0};
+-  __m256i v_fta6a7e6e7 = {0};
+-  __m256i v_fta0c0e0g0 = {0};
+-  __m256i v_fta1c1e1g1 = {0};
+-  __m256i v_fta4c4e4g4 = {0};
+-  __m256i v_fta5c5e5g5 = {0};
+-  __m256i v_fta0b0e0f0 = {0};
+-  __m256i v_ftc0d0g0h0 = {0};
+-  __m256i v_fta4b4e4f4 = {0};
+-  __m256i v_ftc4d4g4h4 = {0};
+-  __m256i v_finalae = {0};
+-  __m256i v_finalbf = {0};
+-  __m256i v_finalcg = {0};
+-  __m256i v_finaldh = {0};
+-  __m256i v_final0145 = {0};
+-  __m256i v_final2367 = {0};
+-  uint64_t v_final0 = 0;
+-  uint64_t v_final1 = 0;
+-  uint64_t v_final2 = 0;
+-  uint64_t v_final3 = 0;
+-  uint64_t v_final4 = 0;
+-  uint64_t v_final5 = 0;
+-  uint64_t v_final6 = 0;
+-  uint64_t v_final7 = 0;
+-  wuffs_base__slice_u8 v_remaining = {0};
+-
+-  if (8u > a_dst_stride) {
+-    return wuffs_base__make_empty_struct();
+-  }
+-  v_k_0000 = _mm256_set_epi16((int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u));
+-  v_k_8080 = _mm256_set_epi16((int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u));
+-  v_k_0000_0002 = _mm256_set_epi16((int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u));
+-  v_k_0001_FFFF = _mm256_set_epi16((int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u));
+-  v_k_0400_0000 = _mm256_set_epi16((int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u));
+-  v_k_29CF_1151_D630_1151 = _mm256_set_epi16((int16_t)(4433u), (int16_t)(54832u), (int16_t)(4433u), (int16_t)(54832u), (int16_t)(4433u), (int16_t)(54832u), (int16_t)(4433u), (int16_t)(54832u), (int16_t)(4433u), (int16_t)(10703u), (int16_t)(4433u), (int16_t)(10703u), (int16_t)(4433u), (int16_t)(10703u), (int16_t)(4433u), (int16_t)(10703u));
+-  v_k_E333_133E_ADFD_1051 = _mm256_set_epi16((int16_t)(4177u), (int16_t)(44541u), (int16_t)(4177u), (int16_t)(44541u), (int16_t)(4177u), (int16_t)(44541u), (int16_t)(4177u), (int16_t)(44541u), (int16_t)(4926u), (int16_t)(58163u), (int16_t)(4926u), (int16_t)(58163u), (int16_t)(4926u), (int16_t)(58163u), (int16_t)(4926u), (int16_t)(58163u));
+-  v_k_E6DC_25A1_1925_25A1 = _mm256_set_epi16((int16_t)(9633u), (int16_t)(6437u), (int16_t)(9633u), (int16_t)(6437u), (int16_t)(9633u), (int16_t)(6437u), (int16_t)(9633u), (int16_t)(6437u), (int16_t)(9633u), (int16_t)(59100u), (int16_t)(9633u), (int16_t)(59100u), (int16_t)(9633u), (int16_t)(59100u), (int16_t)(9633u), (int16_t)(59100u));
+-  v_k_ECC1_E333_EFB0_ADFD = _mm256_set_epi16((int16_t)(44541u), (int16_t)(61360u), (int16_t)(44541u), (int16_t)(61360u), (int16_t)(44541u), (int16_t)(61360u), (int16_t)(44541u), (int16_t)(61360u), (int16_t)(58163u), (int16_t)(60609u), (int16_t)(58163u), (int16_t)(60609u), (int16_t)(58163u), (int16_t)(60609u), (int16_t)(58163u), (int16_t)(60609u));
+-  do {
+-    if (0u == (wuffs_base__peek_u64le__no_bounds_check((const uint8_t*)(const void*)(self->private_data.f_mcu_blocks[0u] + 8u)) | wuffs_base__peek_u64le__no_bounds_check((const uint8_t*)(const void*)(self->private_data.f_mcu_blocks[0u] + 16u)))) {
+-      v_az_coeffs = _mm_or_si128(_mm_or_si128(_mm_or_si128(_mm_or_si128(_mm_or_si128(_mm_or_si128(_mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 8u)), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 16u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 24u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 32u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 40u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 48u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 56u)));
+-      if (0u == ((uint64_t)(_mm_cvtsi128_si64(_mm_packs_epi16(v_az_coeffs, v_az_coeffs))))) {
+-        v_rows01 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 0u));
+-        v_quants01 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 0u));
+-        v_rows01 = _mm256_mullo_epi16(v_rows01, v_quants01);
+-        v_az_ah00 = _mm256_slli_epi16(v_rows01, (int32_t)(2u));
+-        v_az_ad00 = _mm256_unpacklo_epi16(v_az_ah00, v_az_ah00);
+-        v_az_eh00 = _mm256_unpackhi_epi16(v_az_ah00, v_az_ah00);
+-        v_az_adeh = _mm256_inserti128_si256(v_az_ad00, _mm256_castsi256_si128(v_az_eh00), (int32_t)(1u));
+-        v_intermediateae = _mm256_shuffle_epi32(v_az_adeh, (int32_t)(0u));
+-        v_intermediatebf = _mm256_shuffle_epi32(v_az_adeh, (int32_t)(85u));
+-        v_intermediatecg = _mm256_shuffle_epi32(v_az_adeh, (int32_t)(170u));
+-        v_intermediatedh = _mm256_shuffle_epi32(v_az_adeh, (int32_t)(255u));
+-        break;
+-      }
+-    }
+-    v_rows01 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 0u));
+-    v_rows23 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 16u));
+-    v_rows45 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 32u));
+-    v_rows67 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 48u));
+-    v_quants01 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 0u));
+-    v_quants23 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 16u));
+-    v_quants45 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 32u));
+-    v_quants67 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 48u));
+-    v_rows01 = _mm256_mullo_epi16(v_rows01, v_quants01);
+-    v_rows23 = _mm256_mullo_epi16(v_rows23, v_quants23);
+-    v_rows45 = _mm256_mullo_epi16(v_rows45, v_quants45);
+-    v_rows67 = _mm256_mullo_epi16(v_rows67, v_quants67);
+-    v_rows04 = _mm256_permute2x128_si256(v_rows01, v_rows45, (int32_t)(32u));
+-    v_rows31 = _mm256_permute2x128_si256(v_rows23, v_rows01, (int32_t)(49u));
+-    v_rows26 = _mm256_permute2x128_si256(v_rows23, v_rows67, (int32_t)(32u));
+-    v_rows75 = _mm256_permute2x128_si256(v_rows67, v_rows45, (int32_t)(49u));
+-    v_fp_rows62 = _mm256_permute2x128_si256(v_rows26, v_rows26, (int32_t)(1u));
+-    v_fp_bq2662ad = _mm256_unpacklo_epi16(v_rows26, v_fp_rows62);
+-    v_fp_bq2662eh = _mm256_unpackhi_epi16(v_rows26, v_fp_rows62);
+-    v_fp_cb26ad = _mm256_madd_epi16(v_fp_bq2662ad, v_k_29CF_1151_D630_1151);
+-    v_fp_cb26eh = _mm256_madd_epi16(v_fp_bq2662eh, v_k_29CF_1151_D630_1151);
+-    v_fp_rows40pos = _mm256_permute2x128_si256(v_rows04, v_rows04, (int32_t)(1u));
+-    v_fp_rows04neg = _mm256_sign_epi16(v_rows04, v_k_0001_FFFF);
+-    v_fp_rows0pm4 = _mm256_add_epi16(v_fp_rows40pos, v_fp_rows04neg);
+-    v_fp_ccpmad = _mm256_srai_epi32(_mm256_unpacklo_epi16(v_k_0000, v_fp_rows0pm4), (int32_t)(3u));
+-    v_fp_ccpmeh = _mm256_srai_epi32(_mm256_unpackhi_epi16(v_k_0000, v_fp_rows0pm4), (int32_t)(3u));
+-    v_fp_cd01ad = _mm256_add_epi32(v_fp_ccpmad, v_fp_cb26ad);
+-    v_fp_cd01eh = _mm256_add_epi32(v_fp_ccpmeh, v_fp_cb26eh);
+-    v_fp_cd32ad = _mm256_sub_epi32(v_fp_ccpmad, v_fp_cb26ad);
+-    v_fp_cd32eh = _mm256_sub_epi32(v_fp_ccpmeh, v_fp_cb26eh);
+-    v_fp_sums7351 = _mm256_add_epi16(v_rows75, v_rows31);
+-    v_fp_sums5173 = _mm256_permute2x128_si256(v_fp_sums7351, v_fp_sums7351, (int32_t)(1u));
+-    v_fp_ci73515173ad = _mm256_unpacklo_epi16(v_fp_sums7351, v_fp_sums5173);
+-    v_fp_ci73515173eh = _mm256_unpackhi_epi16(v_fp_sums7351, v_fp_sums5173);
+-    v_fp_cl7351ad = _mm256_madd_epi16(v_fp_ci73515173ad, v_k_E6DC_25A1_1925_25A1);
+-    v_fp_cl7351eh = _mm256_madd_epi16(v_fp_ci73515173eh, v_k_E6DC_25A1_1925_25A1);
+-    v_fp_rows13 = _mm256_permute2x128_si256(v_rows31, v_rows31, (int32_t)(1u));
+-    v_fp_bq7153ad = _mm256_unpacklo_epi16(v_rows75, v_fp_rows13);
+-    v_fp_bq7153eh = _mm256_unpackhi_epi16(v_rows75, v_fp_rows13);
+-    v_fp_ck75ad = _mm256_add_epi32(_mm256_madd_epi16(v_fp_bq7153ad, v_k_ECC1_E333_EFB0_ADFD), v_fp_cl7351ad);
+-    v_fp_ck75eh = _mm256_add_epi32(_mm256_madd_epi16(v_fp_bq7153eh, v_k_ECC1_E333_EFB0_ADFD), v_fp_cl7351eh);
+-    v_fp_cl5173ad = _mm256_permute2x128_si256(v_fp_cl7351ad, v_fp_cl7351ad, (int32_t)(1u));
+-    v_fp_cl5173eh = _mm256_permute2x128_si256(v_fp_cl7351eh, v_fp_cl7351eh, (int32_t)(1u));
+-    v_fp_ck13ad = _mm256_add_epi32(v_fp_cl5173ad, _mm256_madd_epi16(v_fp_bq7153ad, v_k_E333_133E_ADFD_1051));
+-    v_fp_ck13eh = _mm256_add_epi32(v_fp_cl5173eh, _mm256_madd_epi16(v_fp_bq7153eh, v_k_E333_133E_ADFD_1051));
+-    v_intermediate01ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_fp_cd01ad, v_fp_ck13ad), v_k_0400_0000), (int32_t)(11u));
+-    v_intermediate01eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_fp_cd01eh, v_fp_ck13eh), v_k_0400_0000), (int32_t)(11u));
+-    v_intermediate01 = _mm256_packs_epi32(v_intermediate01ad, v_intermediate01eh);
+-    v_intermediate32ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_fp_cd32ad, v_fp_ck75ad), v_k_0400_0000), (int32_t)(11u));
+-    v_intermediate32eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_fp_cd32eh, v_fp_ck75eh), v_k_0400_0000), (int32_t)(11u));
+-    v_intermediate32 = _mm256_packs_epi32(v_intermediate32ad, v_intermediate32eh);
+-    v_intermediate45ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_fp_cd32ad, v_fp_ck75ad), v_k_0400_0000), (int32_t)(11u));
+-    v_intermediate45eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_fp_cd32eh, v_fp_ck75eh), v_k_0400_0000), (int32_t)(11u));
+-    v_intermediate45 = _mm256_packs_epi32(v_intermediate45ad, v_intermediate45eh);
+-    v_intermediate76ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_fp_cd01ad, v_fp_ck13ad), v_k_0400_0000), (int32_t)(11u));
+-    v_intermediate76eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_fp_cd01eh, v_fp_ck13eh), v_k_0400_0000), (int32_t)(11u));
+-    v_intermediate76 = _mm256_packs_epi32(v_intermediate76ad, v_intermediate76eh);
+-    v_ita0a1e0e1 = _mm256_permute4x64_epi64(v_intermediate01, (int32_t)(216u));
+-    v_ita2a3e2e3 = _mm256_permute4x64_epi64(v_intermediate32, (int32_t)(114u));
+-    v_ita4a5e4e5 = _mm256_permute4x64_epi64(v_intermediate45, (int32_t)(216u));
+-    v_ita6a7e6e7 = _mm256_permute4x64_epi64(v_intermediate76, (int32_t)(114u));
+-    v_ita0c0e0g0 = _mm256_unpacklo_epi16(v_ita0a1e0e1, v_ita2a3e2e3);
+-    v_ita1c1e1g1 = _mm256_unpackhi_epi16(v_ita0a1e0e1, v_ita2a3e2e3);
+-    v_ita4c4e4g4 = _mm256_unpacklo_epi16(v_ita4a5e4e5, v_ita6a7e6e7);
+-    v_ita5c5e5g5 = _mm256_unpackhi_epi16(v_ita4a5e4e5, v_ita6a7e6e7);
+-    v_ita0b0e0f0 = _mm256_unpacklo_epi16(v_ita0c0e0g0, v_ita1c1e1g1);
+-    v_itc0d0g0h0 = _mm256_unpackhi_epi16(v_ita0c0e0g0, v_ita1c1e1g1);
+-    v_ita4b4e4f4 = _mm256_unpacklo_epi16(v_ita4c4e4g4, v_ita5c5e5g5);
+-    v_itc4d4g4h4 = _mm256_unpackhi_epi16(v_ita4c4e4g4, v_ita5c5e5g5);
+-    v_intermediateae = _mm256_unpacklo_epi64(v_ita0b0e0f0, v_ita4b4e4f4);
+-    v_intermediatebf = _mm256_unpackhi_epi64(v_ita0b0e0f0, v_ita4b4e4f4);
+-    v_intermediatecg = _mm256_unpacklo_epi64(v_itc0d0g0h0, v_itc4d4g4h4);
+-    v_intermediatedh = _mm256_unpackhi_epi64(v_itc0d0g0h0, v_itc4d4g4h4);
+-  } while (0);
+-  v_intermediatedb = _mm256_permute2x128_si256(v_intermediatedh, v_intermediatebf, (int32_t)(32u));
+-  v_intermediatehf = _mm256_permute2x128_si256(v_intermediatedh, v_intermediatebf, (int32_t)(49u));
+-  v_sp_cols62 = _mm256_permute2x128_si256(v_intermediatecg, v_intermediatecg, (int32_t)(1u));
+-  v_sp_bq2662ad = _mm256_unpacklo_epi16(v_intermediatecg, v_sp_cols62);
+-  v_sp_bq2662eh = _mm256_unpackhi_epi16(v_intermediatecg, v_sp_cols62);
+-  v_sp_rb26ad = _mm256_madd_epi16(v_sp_bq2662ad, v_k_29CF_1151_D630_1151);
+-  v_sp_rb26eh = _mm256_madd_epi16(v_sp_bq2662eh, v_k_29CF_1151_D630_1151);
+-  v_sp_cols40pos = _mm256_permute2x128_si256(v_intermediateae, v_intermediateae, (int32_t)(1u));
+-  v_sp_cols04neg = _mm256_sign_epi16(v_intermediateae, v_k_0001_FFFF);
+-  v_sp_cols0pm4 = _mm256_add_epi16(v_sp_cols40pos, v_sp_cols04neg);
+-  v_sp_rcpmad = _mm256_srai_epi32(_mm256_unpacklo_epi16(v_k_0000, v_sp_cols0pm4), (int32_t)(3u));
+-  v_sp_rcpmeh = _mm256_srai_epi32(_mm256_unpackhi_epi16(v_k_0000, v_sp_cols0pm4), (int32_t)(3u));
+-  v_sp_rd01ad = _mm256_add_epi32(v_sp_rcpmad, v_sp_rb26ad);
+-  v_sp_rd01eh = _mm256_add_epi32(v_sp_rcpmeh, v_sp_rb26eh);
+-  v_sp_rd32ad = _mm256_sub_epi32(v_sp_rcpmad, v_sp_rb26ad);
+-  v_sp_rd32eh = _mm256_sub_epi32(v_sp_rcpmeh, v_sp_rb26eh);
+-  v_sp_sums7351 = _mm256_add_epi16(v_intermediatehf, v_intermediatedb);
+-  v_sp_sums5173 = _mm256_permute2x128_si256(v_sp_sums7351, v_sp_sums7351, (int32_t)(1u));
+-  v_sp_ri73515173ad = _mm256_unpacklo_epi16(v_sp_sums7351, v_sp_sums5173);
+-  v_sp_ri73515173eh = _mm256_unpackhi_epi16(v_sp_sums7351, v_sp_sums5173);
+-  v_sp_rl7351ad = _mm256_madd_epi16(v_sp_ri73515173ad, v_k_E6DC_25A1_1925_25A1);
+-  v_sp_rl7351eh = _mm256_madd_epi16(v_sp_ri73515173eh, v_k_E6DC_25A1_1925_25A1);
+-  v_sp_cols13 = _mm256_permute2x128_si256(v_intermediatedb, v_intermediatedb, (int32_t)(1u));
+-  v_sp_bq7153ad = _mm256_unpacklo_epi16(v_intermediatehf, v_sp_cols13);
+-  v_sp_bq7153eh = _mm256_unpackhi_epi16(v_intermediatehf, v_sp_cols13);
+-  v_sp_rk75ad = _mm256_add_epi32(_mm256_madd_epi16(v_sp_bq7153ad, v_k_ECC1_E333_EFB0_ADFD), v_sp_rl7351ad);
+-  v_sp_rk75eh = _mm256_add_epi32(_mm256_madd_epi16(v_sp_bq7153eh, v_k_ECC1_E333_EFB0_ADFD), v_sp_rl7351eh);
+-  v_sp_rl5173ad = _mm256_permute2x128_si256(v_sp_rl7351ad, v_sp_rl7351ad, (int32_t)(1u));
+-  v_sp_rl5173eh = _mm256_permute2x128_si256(v_sp_rl7351eh, v_sp_rl7351eh, (int32_t)(1u));
+-  v_sp_rk13ad = _mm256_add_epi32(v_sp_rl5173ad, _mm256_madd_epi16(v_sp_bq7153ad, v_k_E333_133E_ADFD_1051));
+-  v_sp_rk13eh = _mm256_add_epi32(v_sp_rl5173eh, _mm256_madd_epi16(v_sp_bq7153eh, v_k_E333_133E_ADFD_1051));
+-  v_final01ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_sp_rd01ad, v_sp_rk13ad), v_k_0000_0002), (int32_t)(18u));
+-  v_final01eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_sp_rd01eh, v_sp_rk13eh), v_k_0000_0002), (int32_t)(18u));
+-  v_final01 = _mm256_packs_epi32(v_final01ad, v_final01eh);
+-  v_final32ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_sp_rd32ad, v_sp_rk75ad), v_k_0000_0002), (int32_t)(18u));
+-  v_final32eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_sp_rd32eh, v_sp_rk75eh), v_k_0000_0002), (int32_t)(18u));
+-  v_final32 = _mm256_packs_epi32(v_final32ad, v_final32eh);
+-  v_final45ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_sp_rd32ad, v_sp_rk75ad), v_k_0000_0002), (int32_t)(18u));
+-  v_final45eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_sp_rd32eh, v_sp_rk75eh), v_k_0000_0002), (int32_t)(18u));
+-  v_final45 = _mm256_packs_epi32(v_final45ad, v_final45eh);
+-  v_final76ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_sp_rd01ad, v_sp_rk13ad), v_k_0000_0002), (int32_t)(18u));
+-  v_final76eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_sp_rd01eh, v_sp_rk13eh), v_k_0000_0002), (int32_t)(18u));
+-  v_final76 = _mm256_packs_epi32(v_final76ad, v_final76eh);
+-  v_fta0a1e0e1 = _mm256_permute4x64_epi64(v_final01, (int32_t)(216u));
+-  v_fta2a3e2e3 = _mm256_permute4x64_epi64(v_final32, (int32_t)(114u));
+-  v_fta4a5e4e5 = _mm256_permute4x64_epi64(v_final45, (int32_t)(216u));
+-  v_fta6a7e6e7 = _mm256_permute4x64_epi64(v_final76, (int32_t)(114u));
+-  v_fta0c0e0g0 = _mm256_unpacklo_epi16(v_fta0a1e0e1, v_fta2a3e2e3);
+-  v_fta1c1e1g1 = _mm256_unpackhi_epi16(v_fta0a1e0e1, v_fta2a3e2e3);
+-  v_fta4c4e4g4 = _mm256_unpacklo_epi16(v_fta4a5e4e5, v_fta6a7e6e7);
+-  v_fta5c5e5g5 = _mm256_unpackhi_epi16(v_fta4a5e4e5, v_fta6a7e6e7);
+-  v_fta0b0e0f0 = _mm256_unpacklo_epi16(v_fta0c0e0g0, v_fta1c1e1g1);
+-  v_ftc0d0g0h0 = _mm256_unpackhi_epi16(v_fta0c0e0g0, v_fta1c1e1g1);
+-  v_fta4b4e4f4 = _mm256_unpacklo_epi16(v_fta4c4e4g4, v_fta5c5e5g5);
+-  v_ftc4d4g4h4 = _mm256_unpackhi_epi16(v_fta4c4e4g4, v_fta5c5e5g5);
+-  v_finalae = _mm256_unpacklo_epi64(v_fta0b0e0f0, v_fta4b4e4f4);
+-  v_finalbf = _mm256_unpackhi_epi64(v_fta0b0e0f0, v_fta4b4e4f4);
+-  v_finalcg = _mm256_unpacklo_epi64(v_ftc0d0g0h0, v_ftc4d4g4h4);
+-  v_finaldh = _mm256_unpackhi_epi64(v_ftc0d0g0h0, v_ftc4d4g4h4);
+-  v_final0145 = _mm256_add_epi8(_mm256_packs_epi16(v_finalae, v_finalbf), v_k_8080);
+-  v_final2367 = _mm256_add_epi8(_mm256_packs_epi16(v_finalcg, v_finaldh), v_k_8080);
+-  v_final0 = ((uint64_t)(_mm256_extract_epi64(v_final0145, (int32_t)(0u))));
+-  v_final1 = ((uint64_t)(_mm256_extract_epi64(v_final0145, (int32_t)(1u))));
+-  v_final2 = ((uint64_t)(_mm256_extract_epi64(v_final2367, (int32_t)(0u))));
+-  v_final3 = ((uint64_t)(_mm256_extract_epi64(v_final2367, (int32_t)(1u))));
+-  v_final4 = ((uint64_t)(_mm256_extract_epi64(v_final0145, (int32_t)(2u))));
+-  v_final5 = ((uint64_t)(_mm256_extract_epi64(v_final0145, (int32_t)(3u))));
+-  v_final6 = ((uint64_t)(_mm256_extract_epi64(v_final2367, (int32_t)(2u))));
+-  v_final7 = ((uint64_t)(_mm256_extract_epi64(v_final2367, (int32_t)(3u))));
+-  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
+-    return wuffs_base__make_empty_struct();
+-  }
+-  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+-  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final0);
+-  a_dst_buffer = v_remaining;
+-  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
+-    return wuffs_base__make_empty_struct();
+-  }
+-  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+-  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final1);
+-  a_dst_buffer = v_remaining;
+-  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
+-    return wuffs_base__make_empty_struct();
+-  }
+-  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+-  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final2);
+-  a_dst_buffer = v_remaining;
+-  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
+-    return wuffs_base__make_empty_struct();
+-  }
+-  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+-  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final3);
+-  a_dst_buffer = v_remaining;
+-  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
+-    return wuffs_base__make_empty_struct();
+-  }
+-  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+-  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final4);
+-  a_dst_buffer = v_remaining;
+-  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
+-    return wuffs_base__make_empty_struct();
+-  }
+-  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+-  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final5);
+-  a_dst_buffer = v_remaining;
+-  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
+-    return wuffs_base__make_empty_struct();
+-  }
+-  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+-  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final6);
+-  a_dst_buffer = v_remaining;
+-  if (8u > ((uint64_t)(a_dst_buffer.len))) {
+-    return wuffs_base__make_empty_struct();
+-  }
+-  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final7);
+-  return wuffs_base__make_empty_struct();
+-}
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_64)
+-// ‼ WUFFS MULTI-FILE SECTION -x86_avx2
+-
+-// -------- func jpeg.decoder.get_quirk
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_jpeg__decoder__get_quirk(
+-    const wuffs_jpeg__decoder* self,
+-    uint32_t a_key) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
+-
+-  return 0u;
+-}
+-
+-// -------- func jpeg.decoder.set_quirk
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_jpeg__decoder__set_quirk(
+-    wuffs_jpeg__decoder* self,
+-    uint32_t a_key,
+-    uint64_t a_value) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-
+-  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
+-}
+-
+-// -------- func jpeg.decoder.decode_image_config
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_jpeg__decoder__decode_image_config(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__image_config* a_dst,
++static wuffs_base__status
++wuffs_gif__decoder__skip_blocks(
++    wuffs_gif__decoder* self,
+     wuffs_base__io_buffer* a_src) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-  if (!a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 1)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+-  }
+-  self->private_impl.active_coroutine = 0;
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++  uint8_t v_block_size = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0];
++  uint32_t coro_susp_point = self->private_impl.p_skip_blocks;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+     while (true) {
+       {
+-        wuffs_base__status t_0 = wuffs_jpeg__decoder__do_decode_image_config(self, a_dst, a_src);
+-        v_status = t_0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_0 = *iop_a_src++;
++        v_block_size = t_0;
+       }
+-      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_jpeg__error__truncated_input);
+-        goto exit;
++      if (v_block_size == 0u) {
++        status = wuffs_base__make_status(NULL);
++        goto ok;
+       }
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++      self->private_data.s_skip_blocks.scratch = ((uint32_t)(v_block_size));
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++      if (self->private_data.s_skip_blocks.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++        self->private_data.s_skip_blocks.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++        iop_a_src = io2_a_src;
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      iop_a_src += self->private_data.s_skip_blocks.scratch;
+     }
+ 
+     ok:
+-    self->private_impl.p_decode_image_config[0] = 0;
++    self->private_impl.p_skip_blocks = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
++  self->private_impl.p_skip_blocks = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+   goto exit;
+   exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
++
+   return status;
+ }
+ 
+-// -------- func jpeg.decoder.do_decode_image_config
++// -------- func gif.decoder.decode_ae
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_jpeg__decoder__do_decode_image_config(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__image_config* a_dst,
++wuffs_gif__decoder__decode_ae(
++    wuffs_gif__decoder* self,
+     wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint8_t v_c = 0;
+-  uint8_t v_marker = 0;
+-  uint32_t v_pixfmt = 0;
++  uint8_t v_c8 = 0;
++  uint8_t v_block_size = 0;
++  bool v_is_animexts = false;
++  bool v_is_netscape = false;
++  bool v_is_iccp = false;
++  bool v_is_xmp = false;
+ 
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -42362,253 +42476,191 @@ wuffs_jpeg__decoder__do_decode_image_config(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_ae;
+   if (coro_susp_point) {
+-    v_marker = self->private_data.s_do_decode_image_config[0].v_marker;
++    v_block_size = self->private_data.s_decode_ae.v_block_size;
++    v_is_animexts = self->private_data.s_decode_ae.v_is_animexts;
++    v_is_netscape = self->private_data.s_decode_ae.v_is_netscape;
++    v_is_iccp = self->private_data.s_decode_ae.v_is_iccp;
++    v_is_xmp = self->private_data.s_decode_ae.v_is_xmp;
+   }
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if (self->private_impl.f_call_sequence != 0u) {
+-      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
+-      goto exit;
+-    }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
++    do {
++      if (self->private_impl.f_metadata_fourcc != 0u) {
++        status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
++        goto ok;
+       }
+-      uint8_t t_0 = *iop_a_src++;
+-      v_c = t_0;
+-    }
+-    if (v_c != 255u) {
+-      status = wuffs_base__make_status(wuffs_jpeg__error__bad_header);
+-      goto exit;
+-    }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_0 = *iop_a_src++;
++        v_block_size = t_0;
+       }
+-      uint8_t t_1 = *iop_a_src++;
+-      v_c = t_1;
+-    }
+-    if (v_c != 216u) {
+-      status = wuffs_base__make_status(wuffs_jpeg__error__bad_header);
+-      goto exit;
+-    }
+-    while (true) {
+-      while (true) {
++      if (v_block_size == 0u) {
++        status = wuffs_base__make_status(NULL);
++        goto ok;
++      }
++      if (v_block_size != 11u) {
++        self->private_data.s_decode_ae.scratch = ((uint32_t)(v_block_size));
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++        if (self->private_data.s_decode_ae.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++          self->private_data.s_decode_ae.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++          iop_a_src = io2_a_src;
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        iop_a_src += self->private_data.s_decode_ae.scratch;
++        break;
++      }
++      v_is_animexts = true;
++      v_is_netscape = true;
++      v_is_iccp = true;
++      v_is_xmp = true;
++      v_block_size = 0u;
++      while (v_block_size < 11u) {
+         {
+           WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
++          uint8_t t_1 = *iop_a_src++;
++          v_c8 = t_1;
++        }
++        v_is_animexts = (v_is_animexts && (v_c8 == WUFFS_GIF__ANIMEXTS1DOT0[v_block_size]));
++        v_is_netscape = (v_is_netscape && (v_c8 == WUFFS_GIF__NETSCAPE2DOT0[v_block_size]));
++        v_is_iccp = (v_is_iccp && (v_c8 == WUFFS_GIF__ICCRGBG1012[v_block_size]));
++        v_is_xmp = (v_is_xmp && (v_c8 == WUFFS_GIF__XMPDATAXMP[v_block_size]));
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        v_block_size += 1u;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++      }
++      if (v_is_animexts || v_is_netscape) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
+           uint8_t t_2 = *iop_a_src++;
+-          v_c = t_2;
++          v_block_size = t_2;
+         }
+-        if (v_c == 255u) {
++        if (v_block_size != 3u) {
++          self->private_data.s_decode_ae.scratch = ((uint32_t)(v_block_size));
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++          if (self->private_data.s_decode_ae.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++            self->private_data.s_decode_ae.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++            iop_a_src = io2_a_src;
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          iop_a_src += self->private_data.s_decode_ae.scratch;
+           break;
+         }
+-      }
+-      while (true) {
+         {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+           uint8_t t_3 = *iop_a_src++;
+-          v_c = t_3;
++          v_c8 = t_3;
+         }
+-        if (v_c != 255u) {
+-          v_marker = v_c;
++        if (v_c8 != 1u) {
++          self->private_data.s_decode_ae.scratch = 2u;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++          if (self->private_data.s_decode_ae.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++            self->private_data.s_decode_ae.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++            iop_a_src = io2_a_src;
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          iop_a_src += self->private_data.s_decode_ae.scratch;
+           break;
+         }
+-      }
+-      if (v_marker == 0u) {
+-        continue;
+-      } else if ((208u <= v_marker) && (v_marker <= 217u)) {
+-        if (v_marker <= 215u) {
+-          continue;
+-        }
+-      } else {
+         {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
+           uint32_t t_4;
+           if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-            t_4 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
++            t_4 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+             iop_a_src += 2;
+           } else {
+-            self->private_data.s_do_decode_image_config[0].scratch = 0;
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++            self->private_data.s_decode_ae.scratch = 0;
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
+             while (true) {
+               if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+                 status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+                 goto suspend;
+               }
+-              uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-              uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFFu));
+-              *scratch >>= 8;
++              uint64_t* scratch = &self->private_data.s_decode_ae.scratch;
++              uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
+               *scratch <<= 8;
+-              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4);
++              *scratch >>= 8;
++              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
+               if (num_bits_4 == 8) {
+-                t_4 = ((uint32_t)(*scratch >> 48));
++                t_4 = ((uint32_t)(*scratch));
+                 break;
+               }
+               num_bits_4 += 8u;
+-              *scratch |= ((uint64_t)(num_bits_4));
++              *scratch |= ((uint64_t)(num_bits_4)) << 56;
+             }
+           }
+-          self->private_impl.f_payload_length = t_4;
+-        }
+-        if (self->private_impl.f_payload_length < 2u) {
+-          status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker);
+-          goto exit;
+-        }
+-        self->private_impl.f_payload_length -= 2u;
+-      }
+-      if (v_marker < 192u) {
+-        status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
+-        goto exit;
+-      } else if (v_marker < 208u) {
+-        if (v_marker <= 194u) {
+-          if (self->private_impl.f_sof_marker != 0u) {
+-            status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
+-            goto exit;
+-          }
+-          self->private_impl.f_sof_marker = v_marker;
+-          if (a_src) {
+-            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-          }
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+-          status = wuffs_jpeg__decoder__decode_sof(self, a_src);
+-          if (a_src) {
+-            iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-          }
+-          if (status.repr) {
+-            goto suspend;
+-          }
+-          break;
+-        } else if (v_marker == 195u) {
+-          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_lossless_coding);
+-          goto exit;
+-        } else if (v_marker == 196u) {
+-          status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
+-          goto exit;
+-        } else if ((197u <= v_marker) && (v_marker <= 199u)) {
+-          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_hierarchical_coding);
+-          goto exit;
+-        } else if (v_marker == 200u) {
+-          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
+-          goto exit;
+-        } else {
+-          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_arithmetic_coding);
+-          goto exit;
+-        }
+-      } else if (v_marker < 224u) {
+-        if (v_marker < 218u) {
+-          status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker);
+-          goto exit;
+-        } else if (v_marker == 218u) {
+-          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
+-          goto exit;
+-        } else if (v_marker == 219u) {
+-          if (a_src) {
+-            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-          }
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
+-          status = wuffs_jpeg__decoder__decode_dqt(self, a_src);
+-          if (a_src) {
+-            iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-          }
+-          if (status.repr) {
+-            goto suspend;
+-          }
+-          continue;
+-        } else if (v_marker == 221u) {
+-          if (a_src) {
+-            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-          }
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
+-          status = wuffs_jpeg__decoder__decode_dri(self, a_src);
+-          if (a_src) {
+-            iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-          }
+-          if (status.repr) {
+-            goto suspend;
+-          }
+-          continue;
+-        } else {
+-          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
+-          goto exit;
+-        }
+-      } else if (v_marker < 240u) {
+-        if (a_src) {
+-          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-        }
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
+-        status = wuffs_jpeg__decoder__decode_appn(self, a_src, v_marker);
+-        if (a_src) {
+-          iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-        }
+-        if (status.repr) {
+-          goto suspend;
++          self->private_impl.f_num_animation_loops_value = t_4;
+         }
+-        continue;
+-      } else {
+-        if (v_marker == 254u) {
+-        } else {
+-          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
+-          goto exit;
++        self->private_impl.f_seen_num_animation_loops_value = true;
++        if ((0u < self->private_impl.f_num_animation_loops_value) && (self->private_impl.f_num_animation_loops_value <= 65535u)) {
++          self->private_impl.f_num_animation_loops_value += 1u;
+         }
++      } else if (self->private_impl.f_call_sequence >= 32u) {
++      } else if (v_is_iccp && self->private_impl.f_report_metadata_iccp) {
++        self->private_impl.f_metadata_fourcc = 1229144912u;
++        self->private_impl.f_metadata_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
++        self->private_impl.f_call_sequence = 16u;
++        status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
++        goto ok;
++      } else if (v_is_xmp && self->private_impl.f_report_metadata_xmp) {
++        self->private_impl.f_metadata_fourcc = 1481461792u;
++        self->private_impl.f_metadata_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
++        self->private_impl.f_call_sequence = 16u;
++        status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
++        goto ok;
+       }
+-      self->private_data.s_do_decode_image_config[0].scratch = self->private_impl.f_payload_length;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
+-      if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-        self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-        iop_a_src = io2_a_src;
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      iop_a_src += self->private_data.s_do_decode_image_config[0].scratch;
+-      self->private_impl.f_payload_length = 0u;
++    } while (0);
++    if (a_src) {
++      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+     }
+-    self->private_impl.choosy_decode_idct = (
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
+-        wuffs_base__cpu_arch__have_x86_avx2() ? &wuffs_jpeg__decoder__decode_idct_x86_avx2 :
+-#endif
+-        self->private_impl.choosy_decode_idct);
+-    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
+-    if (a_dst != NULL) {
+-      v_pixfmt = 536870920u;
+-      if (self->private_impl.f_num_components > 1u) {
+-        v_pixfmt = 2415954056u;
+-      }
+-      wuffs_base__image_config__set(
+-          a_dst,
+-          v_pixfmt,
+-          0u,
+-          self->private_impl.f_width,
+-          self->private_impl.f_height,
+-          self->private_impl.f_frame_config_io_position,
+-          true);
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
++    status = wuffs_gif__decoder__skip_blocks(self, a_src);
++    if (a_src) {
++      iop_a_src = a_src->data.ptr + a_src->meta.ri;
++    }
++    if (status.repr) {
++      goto suspend;
+     }
+-    self->private_impl.f_call_sequence = 32u;
+ 
+-    goto ok;
+     ok:
+-    self->private_impl.p_do_decode_image_config[0] = 0;
++    self->private_impl.p_decode_ae = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_do_decode_image_config[0].v_marker = v_marker;
++  self->private_impl.p_decode_ae = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_ae.v_block_size = v_block_size;
++  self->private_data.s_decode_ae.v_is_animexts = v_is_animexts;
++  self->private_data.s_decode_ae.v_is_netscape = v_is_netscape;
++  self->private_data.s_decode_ae.v_is_iccp = v_is_iccp;
++  self->private_data.s_decode_ae.v_is_xmp = v_is_xmp;
+ 
+   goto exit;
+   exit:
+@@ -42619,18 +42671,18 @@ wuffs_jpeg__decoder__do_decode_image_config(
+   return status;
+ }
+ 
+-// -------- func jpeg.decoder.decode_dqt
++// -------- func gif.decoder.decode_gc
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_jpeg__decoder__decode_dqt(
+-    wuffs_jpeg__decoder* self,
++wuffs_gif__decoder__decode_gc(
++    wuffs_gif__decoder* self,
+     wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint8_t v_c = 0;
+-  uint8_t v_q = 0;
+-  uint32_t v_i = 0;
++  uint8_t v_c8 = 0;
++  uint8_t v_flags = 0;
++  uint16_t v_gc_duration_centiseconds = 0;
+ 
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -42643,73 +42695,103 @@ wuffs_jpeg__decoder__decode_dqt(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_dqt[0];
+-  if (coro_susp_point) {
+-    v_q = self->private_data.s_decode_dqt[0].v_q;
+-    v_i = self->private_data.s_decode_dqt[0].v_i;
+-  }
++  uint32_t coro_susp_point = self->private_impl.p_decode_gc;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    while (self->private_impl.f_payload_length > 0u) {
+-      self->private_impl.f_payload_length -= 1u;
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
+-        }
+-        uint8_t t_0 = *iop_a_src++;
+-        v_c = t_0;
+-      }
+-      if ((v_c & 15u) > 3u) {
+-        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dqt_marker);
+-        goto exit;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
+       }
+-      v_q = (v_c & 15u);
+-      if ((v_c >> 4u) == 1u) {
+-        status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision);
+-        goto exit;
+-      } else if (((v_c >> 4u) > 1u) || (self->private_impl.f_payload_length < 64u)) {
+-        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dqt_marker);
+-        goto exit;
++      uint8_t t_0 = *iop_a_src++;
++      v_c8 = t_0;
++    }
++    if (v_c8 != 4u) {
++      status = wuffs_base__make_status(wuffs_gif__error__bad_graphic_control);
++      goto exit;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
+       }
+-      self->private_impl.f_payload_length -= 64u;
+-      v_i = 0u;
+-      while (v_i < 64u) {
+-        v_i += 1u;
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++      uint8_t t_1 = *iop_a_src++;
++      v_flags = t_1;
++    }
++    self->private_impl.f_gc_has_transparent_index = (((uint8_t)(v_flags & 1u)) != 0u);
++    v_flags = ((uint8_t)(((uint8_t)(v_flags >> 2u)) & 7u));
++    if (v_flags == 2u) {
++      self->private_impl.f_gc_disposal = 1u;
++    } else if ((v_flags == 3u) || (v_flags == 4u)) {
++      self->private_impl.f_gc_disposal = 2u;
++    } else {
++      self->private_impl.f_gc_disposal = 0u;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++      uint16_t t_2;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++        t_2 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
++        iop_a_src += 2;
++      } else {
++        self->private_data.s_decode_gc.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++        while (true) {
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint16_t t_1 = *iop_a_src++;
+-          self->private_impl.f_quant_tables[v_q][WUFFS_JPEG__UNZIG[v_i]] = t_1;
++          uint64_t* scratch = &self->private_data.s_decode_gc.scratch;
++          uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
++          *scratch <<= 8;
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
++          if (num_bits_2 == 8) {
++            t_2 = ((uint16_t)(*scratch));
++            break;
++          }
++          num_bits_2 += 8u;
++          *scratch |= ((uint64_t)(num_bits_2)) << 56;
+         }
+       }
+-      self->private_impl.f_seen_dqt[v_q] = true;
+-      if (self->private_impl.f_sof_marker == 0u) {
+-        v_i = 0u;
+-        while (v_i < 64u) {
+-          self->private_impl.f_saved_quant_tables[v_q][v_i] = self->private_impl.f_quant_tables[v_q][v_i];
+-          v_i += 1u;
+-        }
+-        self->private_impl.f_saved_seen_dqt[v_q] = true;
++      v_gc_duration_centiseconds = t_2;
++    }
++    self->private_impl.f_gc_duration = (((uint64_t)(v_gc_duration_centiseconds)) * 7056000u);
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_3 = *iop_a_src++;
++      self->private_impl.f_gc_transparent_index = t_3;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
+       }
++      uint8_t t_4 = *iop_a_src++;
++      v_c8 = t_4;
++    }
++    if (v_c8 != 0u) {
++      status = wuffs_base__make_status(wuffs_gif__error__bad_graphic_control);
++      goto exit;
+     }
+ 
+     goto ok;
+     ok:
+-    self->private_impl.p_decode_dqt[0] = 0;
++    self->private_impl.p_decode_gc = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_dqt[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_decode_dqt[0].v_q = v_q;
+-  self->private_data.s_decode_dqt[0].v_i = v_i;
++  self->private_impl.p_decode_gc = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+   goto exit;
+   exit:
+@@ -42720,12 +42802,12 @@ wuffs_jpeg__decoder__decode_dqt(
+   return status;
+ }
+ 
+-// -------- func jpeg.decoder.decode_dri
++// -------- func gif.decoder.decode_id_part0
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_jpeg__decoder__decode_dri(
+-    wuffs_jpeg__decoder* self,
++wuffs_gif__decoder__decode_id_part0(
++    wuffs_gif__decoder* self,
+     wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+@@ -42740,57 +42822,144 @@ wuffs_jpeg__decoder__decode_dri(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_dri[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_id_part0;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if (self->private_impl.f_payload_length != 2u) {
+-      status = wuffs_base__make_status(wuffs_jpeg__error__bad_dri_marker);
+-      goto exit;
+-    }
+-    self->private_impl.f_payload_length = 0u;
+     {
+       WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      uint16_t t_0;
++      uint32_t t_0;
+       if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-        t_0 = wuffs_base__peek_u16be__no_bounds_check(iop_a_src);
++        t_0 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+         iop_a_src += 2;
+       } else {
+-        self->private_data.s_decode_dri[0].scratch = 0;
++        self->private_data.s_decode_id_part0.scratch = 0;
+         WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+         while (true) {
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint64_t* scratch = &self->private_data.s_decode_dri[0].scratch;
+-          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
++          uint64_t* scratch = &self->private_data.s_decode_id_part0.scratch;
++          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
+           *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
+           if (num_bits_0 == 8) {
+-            t_0 = ((uint16_t)(*scratch >> 48));
++            t_0 = ((uint32_t)(*scratch));
+             break;
+           }
+           num_bits_0 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_0));
++          *scratch |= ((uint64_t)(num_bits_0)) << 56;
+         }
+       }
+-      self->private_impl.f_restart_interval = t_0;
++      self->private_impl.f_frame_rect_x0 = t_0;
+     }
+-    if (self->private_impl.f_sof_marker == 0u) {
+-      self->private_impl.f_saved_restart_interval = self->private_impl.f_restart_interval;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++      uint32_t t_1;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++        t_1 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
++        iop_a_src += 2;
++      } else {
++        self->private_data.s_decode_id_part0.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_id_part0.scratch;
++          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
++          *scratch <<= 8;
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
++          if (num_bits_1 == 8) {
++            t_1 = ((uint32_t)(*scratch));
++            break;
++          }
++          num_bits_1 += 8u;
++          *scratch |= ((uint64_t)(num_bits_1)) << 56;
++        }
++      }
++      self->private_impl.f_frame_rect_y0 = t_1;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++      uint32_t t_2;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++        t_2 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
++        iop_a_src += 2;
++      } else {
++        self->private_data.s_decode_id_part0.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_id_part0.scratch;
++          uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
++          *scratch <<= 8;
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
++          if (num_bits_2 == 8) {
++            t_2 = ((uint32_t)(*scratch));
++            break;
++          }
++          num_bits_2 += 8u;
++          *scratch |= ((uint64_t)(num_bits_2)) << 56;
++        }
++      }
++      self->private_impl.f_frame_rect_x1 = t_2;
++    }
++    self->private_impl.f_frame_rect_x1 += self->private_impl.f_frame_rect_x0;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++      uint32_t t_3;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++        t_3 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
++        iop_a_src += 2;
++      } else {
++        self->private_data.s_decode_id_part0.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_id_part0.scratch;
++          uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
++          *scratch <<= 8;
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
++          if (num_bits_3 == 8) {
++            t_3 = ((uint32_t)(*scratch));
++            break;
++          }
++          num_bits_3 += 8u;
++          *scratch |= ((uint64_t)(num_bits_3)) << 56;
++        }
++      }
++      self->private_impl.f_frame_rect_y1 = t_3;
++    }
++    self->private_impl.f_frame_rect_y1 += self->private_impl.f_frame_rect_y0;
++    self->private_impl.f_dst_x = self->private_impl.f_frame_rect_x0;
++    self->private_impl.f_dst_y = self->private_impl.f_frame_rect_y0;
++    if ((self->private_impl.f_num_decoded_frame_configs_value == 0u) &&  ! self->private_impl.f_quirks[4u]) {
++      self->private_impl.f_width = wuffs_base__u32__max(self->private_impl.f_width, self->private_impl.f_frame_rect_x1);
++      self->private_impl.f_height = wuffs_base__u32__max(self->private_impl.f_height, self->private_impl.f_frame_rect_y1);
+     }
+ 
+     goto ok;
+     ok:
+-    self->private_impl.p_decode_dri[0] = 0;
++    self->private_impl.p_decode_id_part0 = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_dri[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.p_decode_id_part0 = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+   goto exit;
+   exit:
+@@ -42801,18 +42970,24 @@ wuffs_jpeg__decoder__decode_dri(
+   return status;
+ }
+ 
+-// -------- func jpeg.decoder.decode_appn
++// -------- func gif.decoder.decode_id_part1
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_jpeg__decoder__decode_appn(
+-    wuffs_jpeg__decoder* self,
++wuffs_gif__decoder__decode_id_part1(
++    wuffs_gif__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
+     wuffs_base__io_buffer* a_src,
+-    uint8_t a_marker) {
++    wuffs_base__pixel_blend a_blend) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint8_t v_c8 = 0;
+-  uint32_t v_c32 = 0;
++  uint8_t v_flags = 0;
++  uint8_t v_which_palette = 0;
++  uint32_t v_num_palette_entries = 0;
++  uint32_t v_i = 0;
++  uint32_t v_argb = 0;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++  uint8_t v_lw = 0;
+ 
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -42825,184 +43000,136 @@ wuffs_jpeg__decoder__decode_appn(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_appn[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_id_part1;
++  if (coro_susp_point) {
++    v_which_palette = self->private_data.s_decode_id_part1.v_which_palette;
++    v_num_palette_entries = self->private_data.s_decode_id_part1.v_num_palette_entries;
++    v_i = self->private_data.s_decode_id_part1.v_i;
++  }
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    do {
+-      if (a_marker == 224u) {
+-        if (self->private_impl.f_payload_length >= 5u) {
+-          self->private_impl.f_payload_length -= 5u;
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-            uint32_t t_0;
+-            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-              t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-              iop_a_src += 4;
+-            } else {
+-              self->private_data.s_decode_appn[0].scratch = 0;
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-              while (true) {
+-                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                  goto suspend;
+-                }
+-                uint64_t* scratch = &self->private_data.s_decode_appn[0].scratch;
+-                uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
+-                *scratch <<= 8;
+-                *scratch >>= 8;
+-                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
+-                if (num_bits_0 == 24) {
+-                  t_0 = ((uint32_t)(*scratch));
+-                  break;
+-                }
+-                num_bits_0 += 8u;
+-                *scratch |= ((uint64_t)(num_bits_0)) << 56;
+-              }
+-            }
+-            v_c32 = t_0;
+-          }
+-          if (v_c32 != 1179207242u) {
+-            self->private_impl.f_payload_length = (65535u & (self->private_impl.f_payload_length + 1u));
+-            break;
+-          }
+-          {
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_0 = *iop_a_src++;
++      v_flags = t_0;
++    }
++    if (((uint8_t)(v_flags & 64u)) != 0u) {
++      self->private_impl.f_interlace = 4u;
++    } else {
++      self->private_impl.f_interlace = 0u;
++    }
++    v_which_palette = 1u;
++    if (((uint8_t)(v_flags & 128u)) != 0u) {
++      v_num_palette_entries = (((uint32_t)(1u)) << ((uint8_t)(1u + ((uint8_t)(v_flags & 7u)))));
++      v_i = 0u;
++      while (v_i < v_num_palette_entries) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++          uint32_t t_1;
++          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
++            t_1 = ((uint32_t)(wuffs_base__peek_u24be__no_bounds_check(iop_a_src)));
++            iop_a_src += 3;
++          } else {
++            self->private_data.s_decode_id_part1.scratch = 0;
+             WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint8_t t_1 = *iop_a_src++;
+-            v_c8 = t_1;
+-          }
+-          self->private_impl.f_is_jfif = (v_c8 == 0u);
+-        }
+-      } else if (a_marker == 238u) {
+-        if (self->private_impl.f_payload_length >= 12u) {
+-          self->private_impl.f_payload_length -= 12u;
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-            uint32_t t_2;
+-            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-              t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-              iop_a_src += 4;
+-            } else {
+-              self->private_data.s_decode_appn[0].scratch = 0;
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-              while (true) {
+-                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                  goto suspend;
+-                }
+-                uint64_t* scratch = &self->private_data.s_decode_appn[0].scratch;
+-                uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
+-                *scratch <<= 8;
+-                *scratch >>= 8;
+-                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
+-                if (num_bits_2 == 24) {
+-                  t_2 = ((uint32_t)(*scratch));
+-                  break;
+-                }
+-                num_bits_2 += 8u;
+-                *scratch |= ((uint64_t)(num_bits_2)) << 56;
+-              }
+-            }
+-            v_c32 = t_2;
+-          }
+-          if (v_c32 != 1651467329u) {
+-            self->private_impl.f_payload_length = (65535u & (self->private_impl.f_payload_length + 8u));
+-            break;
+-          }
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-            uint32_t t_3;
+-            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-              t_3 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-              iop_a_src += 4;
+-            } else {
+-              self->private_data.s_decode_appn[0].scratch = 0;
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+-              while (true) {
+-                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                  goto suspend;
+-                }
+-                uint64_t* scratch = &self->private_data.s_decode_appn[0].scratch;
+-                uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
+-                *scratch <<= 8;
+-                *scratch >>= 8;
+-                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
+-                if (num_bits_3 == 24) {
+-                  t_3 = ((uint32_t)(*scratch));
+-                  break;
+-                }
+-                num_bits_3 += 8u;
+-                *scratch |= ((uint64_t)(num_bits_3)) << 56;
++            while (true) {
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
+               }
+-            }
+-            v_c32 = t_3;
+-          }
+-          if ((255u & v_c32) != 101u) {
+-            self->private_impl.f_payload_length = (65535u & (self->private_impl.f_payload_length + 4u));
+-            break;
+-          }
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
+-            uint32_t t_4;
+-            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-              t_4 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-              iop_a_src += 4;
+-            } else {
+-              self->private_data.s_decode_appn[0].scratch = 0;
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
+-              while (true) {
+-                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                  goto suspend;
+-                }
+-                uint64_t* scratch = &self->private_data.s_decode_appn[0].scratch;
+-                uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
+-                *scratch <<= 8;
+-                *scratch >>= 8;
+-                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
+-                if (num_bits_4 == 24) {
+-                  t_4 = ((uint32_t)(*scratch));
+-                  break;
+-                }
+-                num_bits_4 += 8u;
+-                *scratch |= ((uint64_t)(num_bits_4)) << 56;
++              uint64_t* scratch = &self->private_data.s_decode_id_part1.scratch;
++              uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
++              *scratch >>= 8;
++              *scratch <<= 8;
++              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
++              if (num_bits_1 == 16) {
++                t_1 = ((uint32_t)(*scratch >> 40));
++                break;
+               }
++              num_bits_1 += 8u;
++              *scratch |= ((uint64_t)(num_bits_1));
+             }
+-            v_c32 = t_4;
+-          }
+-          if ((v_c32 >> 24u) == 0u) {
+-            self->private_impl.f_is_adobe = 1u;
+-          } else {
+-            self->private_impl.f_is_adobe = 2u;
+           }
++          v_argb = t_1;
+         }
++        v_argb |= 4278190080u;
++        self->private_data.f_palettes[1u][((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u)));
++        self->private_data.f_palettes[1u][((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u)));
++        self->private_data.f_palettes[1u][((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u)));
++        self->private_data.f_palettes[1u][((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u)));
++        v_i += 1u;
+       }
+-    } while (0);
+-    self->private_data.s_decode_appn[0].scratch = self->private_impl.f_payload_length;
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
+-    if (self->private_data.s_decode_appn[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-      self->private_data.s_decode_appn[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-      iop_a_src = io2_a_src;
+-      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-      goto suspend;
++      while (v_i < 256u) {
++        self->private_data.f_palettes[1u][((4u * v_i) + 0u)] = 0u;
++        self->private_data.f_palettes[1u][((4u * v_i) + 1u)] = 0u;
++        self->private_data.f_palettes[1u][((4u * v_i) + 2u)] = 0u;
++        self->private_data.f_palettes[1u][((4u * v_i) + 3u)] = 255u;
++        v_i += 1u;
++      }
++    } else if (self->private_impl.f_quirks[6u] &&  ! self->private_impl.f_has_global_palette) {
++      status = wuffs_base__make_status(wuffs_gif__error__bad_palette);
++      goto exit;
++    } else if (self->private_impl.f_gc_has_transparent_index) {
++      wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_palettes[1u], 1024), wuffs_base__make_slice_u8(self->private_data.f_palettes[0u], 1024));
++    } else {
++      v_which_palette = 0u;
+     }
+-    iop_a_src += self->private_data.s_decode_appn[0].scratch;
+-    self->private_impl.f_payload_length = 0u;
++    if (self->private_impl.f_gc_has_transparent_index) {
++      self->private_data.f_palettes[1u][((4u * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 0u)] = 0u;
++      self->private_data.f_palettes[1u][((4u * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 1u)] = 0u;
++      self->private_data.f_palettes[1u][((4u * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 2u)] = 0u;
++      self->private_data.f_palettes[1u][((4u * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 3u)] = 0u;
++    }
++    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
++        wuffs_base__pixel_buffer__pixel_format(a_dst),
++        wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
++        wuffs_base__utility__make_pixel_format(2198077448u),
++        wuffs_base__make_slice_u8(self->private_data.f_palettes[v_which_palette], 1024),
++        a_blend);
++    if ( ! wuffs_base__status__is_ok(&v_status)) {
++      status = v_status;
++      if (wuffs_base__status__is_error(&status)) {
++        goto exit;
++      } else if (wuffs_base__status__is_suspension(&status)) {
++        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++        goto exit;
++      }
++      goto ok;
++    }
++    if (self->private_impl.f_ignored_but_affects_benchmarks) {
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_2 = *iop_a_src++;
++      v_lw = t_2;
++    }
++    if (v_lw > 8u) {
++      status = wuffs_base__make_status(wuffs_gif__error__bad_literal_width);
++      goto exit;
++    }
++    self->private_impl.f_lzw_pending_literal_width_plus_one = ((uint32_t)(((uint8_t)(1u + v_lw))));
++    self->private_impl.f_ignored_but_affects_benchmarks = true;
+ 
+-    goto ok;
+     ok:
+-    self->private_impl.p_decode_appn[0] = 0;
++    self->private_impl.p_decode_id_part1 = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_appn[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.p_decode_id_part1 = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_id_part1.v_which_palette = v_which_palette;
++  self->private_data.s_decode_id_part1.v_num_palette_entries = v_num_palette_entries;
++  self->private_data.s_decode_id_part1.v_i = v_i;
+ 
+   goto exit;
+   exit:
+@@ -43013,30 +43140,29 @@ wuffs_jpeg__decoder__decode_appn(
+   return status;
+ }
+ 
+-// -------- func jpeg.decoder.decode_sof
++// -------- func gif.decoder.decode_id_part2
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_jpeg__decoder__decode_sof(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
++wuffs_gif__decoder__decode_id_part2(
++    wuffs_gif__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint8_t v_c = 0;
+-  uint8_t v_comp_h = 0;
+-  uint8_t v_comp_v = 0;
+-  uint32_t v_i = 0;
+-  uint32_t v_j = 0;
+-  bool v_has_h24 = false;
+-  bool v_has_h3 = false;
+-  bool v_has_v24 = false;
+-  bool v_has_v3 = false;
+-  uint32_t v_upper_bound = 0;
+-  uint64_t v_wh0 = 0;
+-  uint64_t v_wh1 = 0;
+-  uint64_t v_wh2 = 0;
+-  uint64_t v_wh3 = 0;
+-  uint64_t v_progressive = 0;
++  uint64_t v_block_size = 0;
++  bool v_need_block_size = false;
++  uint32_t v_n_copied = 0;
++  uint64_t v_n_compressed = 0;
++  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
++  wuffs_base__io_buffer* v_r = &u_r;
++  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint64_t v_mark = 0;
++  wuffs_base__status v_copy_status = wuffs_base__make_status(NULL);
+ 
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -43049,269 +43175,185 @@ wuffs_jpeg__decoder__decode_sof(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_sof[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_id_part2;
+   if (coro_susp_point) {
+-    v_i = self->private_data.s_decode_sof[0].v_i;
++    v_block_size = self->private_data.s_decode_id_part2.v_block_size;
++    v_need_block_size = self->private_data.s_decode_id_part2.v_need_block_size;
+   }
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if (self->private_impl.f_payload_length < 6u) {
+-      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
+-      goto exit;
+-    }
+-    self->private_impl.f_payload_length -= 6u;
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_0 = *iop_a_src++;
+-      v_c = t_0;
+-    }
+-    if (v_c == 8u) {
+-    } else if (v_c == 12u) {
+-      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision_12_bits);
+-      goto exit;
+-    } else if (v_c == 16u) {
+-      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision_16_bits);
+-      goto exit;
+-    } else {
+-      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision);
+-      goto exit;
+-    }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-      uint32_t t_1;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-        t_1 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
+-        iop_a_src += 2;
+-      } else {
+-        self->private_data.s_decode_sof[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-        while (true) {
++    wuffs_gif__decoder__lzw_init(self);
++    v_need_block_size = true;
++    label__outer__continue:;
++    while (true) {
++      if (v_need_block_size) {
++        v_need_block_size = false;
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint64_t* scratch = &self->private_data.s_decode_sof[0].scratch;
+-          uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
+-          *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
+-          if (num_bits_1 == 8) {
+-            t_1 = ((uint32_t)(*scratch >> 48));
+-            break;
+-          }
+-          num_bits_1 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_1));
++          uint64_t t_0 = *iop_a_src++;
++          v_block_size = t_0;
+         }
+       }
+-      self->private_impl.f_height = t_1;
+-    }
+-    if (self->private_impl.f_height == 0u) {
+-      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_implicit_height);
+-      goto exit;
+-    }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-      uint32_t t_2;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-        t_2 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
+-        iop_a_src += 2;
+-      } else {
+-        self->private_data.s_decode_sof[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_decode_sof[0].scratch;
+-          uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
+-          *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
+-          if (num_bits_2 == 8) {
+-            t_2 = ((uint32_t)(*scratch >> 48));
+-            break;
+-          }
+-          num_bits_2 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_2));
+-        }
++      if (v_block_size == 0u) {
++        break;
+       }
+-      self->private_impl.f_width = t_2;
+-    }
+-    if (self->private_impl.f_width == 0u) {
+-      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
+-      goto exit;
+-    }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++      while (((uint64_t)(io2_a_src - iop_a_src)) == 0u) {
+         status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
+       }
+-      uint8_t t_3 = *iop_a_src++;
+-      v_c = t_3;
+-    }
+-    if ((v_c == 0u) || (v_c > 4u)) {
+-      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
+-      goto exit;
+-    } else if (v_c == 2u) {
+-      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_color_model);
+-      goto exit;
+-    }
+-    self->private_impl.f_num_components = ((uint32_t)(v_c));
+-    if (self->private_impl.f_payload_length != (3u * self->private_impl.f_num_components)) {
+-      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
+-      goto exit;
+-    }
+-    self->private_impl.f_payload_length = 0u;
+-    v_i = 0u;
+-    while (v_i < self->private_impl.f_num_components) {
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
+-        }
+-        uint8_t t_4 = *iop_a_src++;
+-        self->private_impl.f_components_c[v_i] = t_4;
++      if (self->private_impl.f_compressed_ri == self->private_impl.f_compressed_wi) {
++        self->private_impl.f_compressed_ri = 0u;
++        self->private_impl.f_compressed_wi = 0u;
+       }
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
++      while (self->private_impl.f_compressed_wi <= 3841u) {
++        v_n_compressed = wuffs_base__u64__min(v_block_size, ((uint64_t)(io2_a_src - iop_a_src)));
++        if (v_n_compressed <= 0u) {
++          break;
+         }
+-        uint8_t t_5 = *iop_a_src++;
+-        v_c = t_5;
+-      }
+-      v_comp_h = (v_c >> 4u);
+-      v_comp_v = (v_c & 15u);
+-      if ((v_comp_h == 0u) ||
+-          (v_comp_h > 4u) ||
+-          (v_comp_v == 0u) ||
+-          (v_comp_v > 4u)) {
+-        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
+-        goto exit;
+-      }
+-      self->private_impl.f_components_h[v_i] = v_comp_h;
+-      if (self->private_impl.f_max_incl_components_h < self->private_impl.f_components_h[v_i]) {
+-        self->private_impl.f_max_incl_components_h = self->private_impl.f_components_h[v_i];
+-      }
+-      self->private_impl.f_components_v[v_i] = v_comp_v;
+-      if (self->private_impl.f_max_incl_components_v < self->private_impl.f_components_v[v_i]) {
+-        self->private_impl.f_max_incl_components_v = self->private_impl.f_components_v[v_i];
+-      }
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
++        v_n_copied = wuffs_private_impl__io_reader__limited_copy_u32_to_slice(
++            &iop_a_src, io2_a_src,((uint32_t)(v_n_compressed)), wuffs_base__make_slice_u8_ij(self->private_data.f_compressed, self->private_impl.f_compressed_wi, 4096));
++        wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_compressed_wi, ((uint64_t)(v_n_copied)));
++        wuffs_private_impl__u64__sat_sub_indirect(&v_block_size, ((uint64_t)(v_n_copied)));
++        if (v_block_size > 0u) {
++          break;
+         }
+-        uint8_t t_6 = *iop_a_src++;
+-        v_c = t_6;
+-      }
+-      if (v_c >= 4u) {
+-        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
+-        goto exit;
++        if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++          v_need_block_size = true;
++          break;
++        }
++        v_block_size = ((uint64_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src)));
++        iop_a_src += 1u;
+       }
+-      self->private_impl.f_components_tq[v_i] = v_c;
+-      v_j = 0u;
+-      while (v_j < v_i) {
+-        if (self->private_impl.f_components_c[v_j] == self->private_impl.f_components_c[v_i]) {
+-          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
++      while (true) {
++        if ((self->private_impl.f_compressed_ri > self->private_impl.f_compressed_wi) || (self->private_impl.f_compressed_wi > 4096u)) {
++          status = wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_i_o);
+           goto exit;
+         }
+-        v_j += 1u;
+-      }
+-      v_i += 1u;
+-    }
+-    if (self->private_impl.f_num_components == 1u) {
+-      self->private_impl.f_max_incl_components_h = 1u;
+-      self->private_impl.f_max_incl_components_v = 1u;
+-      self->private_impl.f_components_h[0u] = 1u;
+-      self->private_impl.f_components_v[0u] = 1u;
+-    } else {
+-      v_has_h24 = false;
+-      v_has_h3 = false;
+-      v_has_v24 = false;
+-      v_has_v3 = false;
+-      v_i = 0u;
+-      while (v_i < self->private_impl.f_num_components) {
+-        v_has_h24 = (v_has_h24 || (self->private_impl.f_components_h[v_i] == 2u) || (self->private_impl.f_components_h[v_i] == 4u));
+-        v_has_h3 = (v_has_h3 || (self->private_impl.f_components_h[v_i] == 3u));
+-        v_has_v24 = (v_has_v24 || (self->private_impl.f_components_v[v_i] == 2u) || (self->private_impl.f_components_v[v_i] == 4u));
+-        v_has_v3 = (v_has_v3 || (self->private_impl.f_components_v[v_i] == 3u));
+-        v_i += 1u;
+-      }
+-      if ((v_has_h24 && v_has_h3) || (v_has_v24 && v_has_v3)) {
+-        status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_fractional_sampling);
+-        goto exit;
+-      }
+-      if (self->private_impl.f_num_components == 4u) {
+-        self->private_impl.f_is_rgb_or_cmyk = (self->private_impl.f_is_adobe < 2u);
+-      } else {
+-        if (self->private_impl.f_is_jfif) {
+-          self->private_impl.f_is_rgb_or_cmyk = false;
+-        } else if (self->private_impl.f_is_adobe > 0u) {
+-          self->private_impl.f_is_rgb_or_cmyk = (self->private_impl.f_is_adobe == 1u);
+-        } else {
+-          self->private_impl.f_is_rgb_or_cmyk = ((self->private_impl.f_components_c[0u] == 82u) && (self->private_impl.f_components_c[1u] == 71u) && (self->private_impl.f_components_c[2u] == 66u));
++        {
++          wuffs_base__io_buffer* o_0_v_r = v_r;
++          const uint8_t* o_0_iop_v_r = iop_v_r;
++          const uint8_t* o_0_io0_v_r = io0_v_r;
++          const uint8_t* o_0_io1_v_r = io1_v_r;
++          const uint8_t* o_0_io2_v_r = io2_v_r;
++          v_r = wuffs_private_impl__io_reader__set(
++              &u_r,
++              &iop_v_r,
++              &io0_v_r,
++              &io1_v_r,
++              &io2_v_r,
++              wuffs_base__make_slice_u8_ij(self->private_data.f_compressed,
++              self->private_impl.f_compressed_ri,
++              self->private_impl.f_compressed_wi),
++              0u);
++          v_mark = ((uint64_t)(iop_v_r - io0_v_r));
++          u_r.meta.ri = ((size_t)(iop_v_r - u_r.data.ptr));
++          wuffs_gif__decoder__lzw_read_from(self, v_r);
++          iop_v_r = u_r.data.ptr + u_r.meta.ri;
++          wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_compressed_ri, wuffs_private_impl__io__count_since(v_mark, ((uint64_t)(iop_v_r - io0_v_r))));
++          v_r = o_0_v_r;
++          iop_v_r = o_0_iop_v_r;
++          io0_v_r = o_0_io0_v_r;
++          io1_v_r = o_0_io1_v_r;
++          io2_v_r = o_0_io2_v_r;
+         }
+-      }
+-    }
+-    self->private_impl.f_width_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_width, 1u, self->private_impl.f_max_incl_components_h);
+-    self->private_impl.f_height_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_height, 1u, self->private_impl.f_max_incl_components_v);
+-    v_upper_bound = 65544u;
+-    self->private_impl.f_components_workbuf_widths[0u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[0u]))));
+-    self->private_impl.f_components_workbuf_widths[1u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[1u]))));
+-    self->private_impl.f_components_workbuf_widths[2u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[2u]))));
+-    self->private_impl.f_components_workbuf_widths[3u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[3u]))));
+-    self->private_impl.f_components_workbuf_heights[0u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[0u]))));
+-    self->private_impl.f_components_workbuf_heights[1u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[1u]))));
+-    self->private_impl.f_components_workbuf_heights[2u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[2u]))));
+-    self->private_impl.f_components_workbuf_heights[3u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[3u]))));
+-    v_wh0 = (((uint64_t)(self->private_impl.f_components_workbuf_widths[0u])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[0u])));
+-    v_wh1 = (((uint64_t)(self->private_impl.f_components_workbuf_widths[1u])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[1u])));
+-    v_wh2 = (((uint64_t)(self->private_impl.f_components_workbuf_widths[2u])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[2u])));
+-    v_wh3 = (((uint64_t)(self->private_impl.f_components_workbuf_widths[3u])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[3u])));
+-    v_progressive = 0u;
+-    if (self->private_impl.f_sof_marker >= 194u) {
+-      v_progressive = 2u;
+-      v_i = 0u;
+-      while (v_i < 4u) {
+-        v_j = 0u;
+-        while (v_j < 10u) {
+-          self->private_impl.f_block_smoothing_lowest_scan_al[v_i][v_j] = 16u;
+-          v_j += 1u;
++        if (self->private_impl.f_lzw_output_ri < self->private_impl.f_lzw_output_wi) {
++          v_copy_status = wuffs_gif__decoder__copy_to_image_buffer(self, a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_lzw_output,
++              self->private_impl.f_lzw_output_ri,
++              self->private_impl.f_lzw_output_wi));
++          if (wuffs_base__status__is_error(&v_copy_status)) {
++            status = v_copy_status;
++            goto exit;
++          }
++          self->private_impl.f_lzw_output_ri = 0u;
++          self->private_impl.f_lzw_output_wi = 0u;
+         }
+-        v_i += 1u;
++        if (self->private_impl.f_lzw_read_from_return_value == 0u) {
++          self->private_impl.f_ignored_but_affects_benchmarks = false;
++          if (v_need_block_size || (v_block_size > 0u)) {
++            self->private_data.s_decode_id_part2.scratch = ((uint32_t)(v_block_size));
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++            if (self->private_data.s_decode_id_part2.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++              self->private_data.s_decode_id_part2.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++              iop_a_src = io2_a_src;
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            iop_a_src += self->private_data.s_decode_id_part2.scratch;
++            if (a_src) {
++              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++            }
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++            status = wuffs_gif__decoder__skip_blocks(self, a_src);
++            if (a_src) {
++              iop_a_src = a_src->data.ptr + a_src->meta.ri;
++            }
++            if (status.repr) {
++              goto suspend;
++            }
++          }
++          goto label__outer__break;
++        } else if (self->private_impl.f_lzw_read_from_return_value == 1u) {
++          continue;
++        } else if (self->private_impl.f_lzw_read_from_return_value == 2u) {
++          goto label__outer__continue;
++        } else if (self->private_impl.f_quirks[3u] && (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1) && (self->private_impl.f_interlace == 0u)) {
++          if (v_need_block_size || (v_block_size > 0u)) {
++            self->private_data.s_decode_id_part2.scratch = ((uint32_t)(v_block_size));
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++            if (self->private_data.s_decode_id_part2.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++              self->private_data.s_decode_id_part2.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++              iop_a_src = io2_a_src;
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            iop_a_src += self->private_data.s_decode_id_part2.scratch;
++            if (a_src) {
++              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++            }
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++            status = wuffs_gif__decoder__skip_blocks(self, a_src);
++            if (a_src) {
++              iop_a_src = a_src->data.ptr + a_src->meta.ri;
++            }
++            if (status.repr) {
++              goto suspend;
++            }
++          }
++          goto label__outer__break;
++        } else if (self->private_impl.f_lzw_read_from_return_value == 3u) {
++          status = wuffs_base__make_status(wuffs_gif__error__truncated_input);
++          goto exit;
++        } else if (self->private_impl.f_lzw_read_from_return_value == 4u) {
++          status = wuffs_base__make_status(wuffs_gif__error__bad_lzw_code);
++          goto exit;
++        }
++        status = wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_i_o);
++        goto exit;
+       }
+     }
+-    self->private_impl.f_components_workbuf_offsets[0u] = 0u;
+-    self->private_impl.f_components_workbuf_offsets[1u] = (self->private_impl.f_components_workbuf_offsets[0u] + v_wh0);
+-    self->private_impl.f_components_workbuf_offsets[2u] = (self->private_impl.f_components_workbuf_offsets[1u] + v_wh1);
+-    self->private_impl.f_components_workbuf_offsets[3u] = (self->private_impl.f_components_workbuf_offsets[2u] + v_wh2);
+-    self->private_impl.f_components_workbuf_offsets[4u] = (self->private_impl.f_components_workbuf_offsets[3u] + v_wh3);
+-    self->private_impl.f_components_workbuf_offsets[5u] = (self->private_impl.f_components_workbuf_offsets[4u] + (v_wh0 * v_progressive));
+-    self->private_impl.f_components_workbuf_offsets[6u] = (self->private_impl.f_components_workbuf_offsets[5u] + (v_wh1 * v_progressive));
+-    self->private_impl.f_components_workbuf_offsets[7u] = (self->private_impl.f_components_workbuf_offsets[6u] + (v_wh2 * v_progressive));
+-    self->private_impl.f_components_workbuf_offsets[8u] = (self->private_impl.f_components_workbuf_offsets[7u] + (v_wh3 * v_progressive));
++    label__outer__break:;
++    self->private_impl.f_compressed_ri = 0u;
++    self->private_impl.f_compressed_wi = 0u;
++    if ((self->private_impl.f_dst_y < self->private_impl.f_frame_rect_y1) && (self->private_impl.f_frame_rect_x0 != self->private_impl.f_frame_rect_x1) && (self->private_impl.f_frame_rect_y0 != self->private_impl.f_frame_rect_y1)) {
++      status = wuffs_base__make_status(wuffs_base__error__not_enough_data);
++      goto exit;
++    }
+ 
+-    goto ok;
+     ok:
+-    self->private_impl.p_decode_sof[0] = 0;
++    self->private_impl.p_decode_id_part2 = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_sof[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_decode_sof[0].v_i = v_i;
++  self->private_impl.p_decode_id_part2 = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_id_part2.v_block_size = v_block_size;
++  self->private_data.s_decode_id_part2.v_need_block_size = v_need_block_size;
+ 
+   goto exit;
+   exit:
+@@ -43322,106 +43364,182 @@ wuffs_jpeg__decoder__decode_sof(
+   return status;
+ }
+ 
+-// -------- func jpeg.decoder.quantize_dimension
++// -------- func gif.decoder.copy_to_image_buffer
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static uint32_t
+-wuffs_jpeg__decoder__quantize_dimension(
+-    const wuffs_jpeg__decoder* self,
+-    uint32_t a_width,
+-    uint8_t a_h,
+-    uint8_t a_max_incl_h) {
+-  uint32_t v_ratio = 0;
++static wuffs_base__status
++wuffs_gif__decoder__copy_to_image_buffer(
++    wuffs_gif__decoder* self,
++    wuffs_base__pixel_buffer* a_pb,
++    wuffs_base__slice_u8 a_src) {
++  wuffs_base__slice_u8 v_dst = {0};
++  wuffs_base__slice_u8 v_src = {0};
++  uint64_t v_width_in_bytes = 0;
++  uint64_t v_n = 0;
++  uint64_t v_src_ri = 0;
++  wuffs_base__pixel_format v_pixfmt = {0};
++  uint32_t v_bytes_per_pixel = 0;
++  uint32_t v_bits_per_pixel = 0;
++  wuffs_base__table_u8 v_tab = {0};
++  uint64_t v_i = 0;
++  uint64_t v_j = 0;
++  uint32_t v_replicate_y0 = 0;
++  uint32_t v_replicate_y1 = 0;
++  wuffs_base__slice_u8 v_replicate_dst = {0};
++  wuffs_base__slice_u8 v_replicate_src = {0};
+ 
+-  v_ratio = 0u;
+-  if (a_h > 0u) {
+-    v_ratio = ((uint32_t)((a_max_incl_h / a_h)));
++  v_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_pb);
++  v_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_pixfmt);
++  if ((v_bits_per_pixel & 7u) != 0u) {
++    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
+   }
+-  if (v_ratio == 1u) {
+-    return ((a_width + 7u) / 8u);
+-  } else if (v_ratio == 2u) {
+-    return ((a_width + 15u) / 16u);
+-  } else if (v_ratio == 3u) {
+-    return ((a_width + 23u) / 24u);
++  v_bytes_per_pixel = (v_bits_per_pixel >> 3u);
++  v_width_in_bytes = ((uint64_t)((self->private_impl.f_width * v_bytes_per_pixel)));
++  v_tab = wuffs_base__pixel_buffer__plane(a_pb, 0u);
++  while (v_src_ri < ((uint64_t)(a_src.len))) {
++    v_src = wuffs_base__slice_u8__subslice_i(a_src, v_src_ri);
++    if (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1) {
++      if (self->private_impl.f_quirks[3u]) {
++        return wuffs_base__make_status(NULL);
++      }
++      return wuffs_base__make_status(wuffs_base__error__too_much_data);
++    }
++    v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
++    if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
++      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, 0u);
++    } else if (v_width_in_bytes < ((uint64_t)(v_dst.len))) {
++      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_width_in_bytes);
++    }
++    v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_bytes_per_pixel)));
++    if (v_i < ((uint64_t)(v_dst.len))) {
++      v_j = (((uint64_t)(self->private_impl.f_frame_rect_x1)) * ((uint64_t)(v_bytes_per_pixel)));
++      if ((v_i <= v_j) && (v_j <= ((uint64_t)(v_dst.len)))) {
++        v_dst = wuffs_base__slice_u8__subslice_ij(v_dst, v_i, v_j);
++      } else {
++        v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_i);
++      }
++      v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024), v_src);
++      wuffs_private_impl__u64__sat_add_indirect(&v_src_ri, v_n);
++      wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
++      self->private_impl.f_dirty_max_excl_y = wuffs_base__u32__max(self->private_impl.f_dirty_max_excl_y, wuffs_base__u32__sat_add(self->private_impl.f_dst_y, 1u));
++    }
++    if (self->private_impl.f_frame_rect_x1 <= self->private_impl.f_dst_x) {
++      self->private_impl.f_dst_x = self->private_impl.f_frame_rect_x0;
++      if (self->private_impl.f_interlace == 0u) {
++        wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_y, 1u);
++        continue;
++      }
++      if ((self->private_impl.f_num_decoded_frames_value == 0u) &&  ! self->private_impl.f_gc_has_transparent_index && (self->private_impl.f_interlace > 1u)) {
++        v_replicate_src = wuffs_private_impl__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
++        v_replicate_y0 = wuffs_base__u32__sat_add(self->private_impl.f_dst_y, 1u);
++        v_replicate_y1 = wuffs_base__u32__sat_add(self->private_impl.f_dst_y, ((uint32_t)(WUFFS_GIF__INTERLACE_COUNT[self->private_impl.f_interlace])));
++        v_replicate_y1 = wuffs_base__u32__min(v_replicate_y1, self->private_impl.f_frame_rect_y1);
++        while (v_replicate_y0 < v_replicate_y1) {
++          v_replicate_dst = wuffs_private_impl__table_u8__row_u32(v_tab, v_replicate_y0);
++          wuffs_private_impl__slice_u8__copy_from_slice(v_replicate_dst, v_replicate_src);
++          v_replicate_y0 += 1u;
++        }
++        self->private_impl.f_dirty_max_excl_y = wuffs_base__u32__max(self->private_impl.f_dirty_max_excl_y, v_replicate_y1);
++      }
++      wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_y, ((uint32_t)(WUFFS_GIF__INTERLACE_DELTA[self->private_impl.f_interlace])));
++      while ((self->private_impl.f_interlace > 0u) && (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1)) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        self->private_impl.f_interlace -= 1u;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++        self->private_impl.f_dst_y = wuffs_base__u32__sat_add(self->private_impl.f_frame_rect_y0, WUFFS_GIF__INTERLACE_START[self->private_impl.f_interlace]);
++      }
++      continue;
++    }
++    if (((uint64_t)(a_src.len)) == v_src_ri) {
++      break;
++    } else if (((uint64_t)(a_src.len)) < v_src_ri) {
++      return wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_i_o);
++    }
++    v_n = ((uint64_t)((self->private_impl.f_frame_rect_x1 - self->private_impl.f_dst_x)));
++    v_n = wuffs_base__u64__min(v_n, (((uint64_t)(a_src.len)) - v_src_ri));
++    wuffs_private_impl__u64__sat_add_indirect(&v_src_ri, v_n);
++    wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
++    if (self->private_impl.f_frame_rect_x1 <= self->private_impl.f_dst_x) {
++      self->private_impl.f_dst_x = self->private_impl.f_frame_rect_x0;
++      wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_y, ((uint32_t)(WUFFS_GIF__INTERLACE_DELTA[self->private_impl.f_interlace])));
++      while ((self->private_impl.f_interlace > 0u) && (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1)) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        self->private_impl.f_interlace -= 1u;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++        self->private_impl.f_dst_y = wuffs_base__u32__sat_add(self->private_impl.f_frame_rect_y0, WUFFS_GIF__INTERLACE_START[self->private_impl.f_interlace]);
++      }
++      continue;
++    }
++    if (v_src_ri != ((uint64_t)(a_src.len))) {
++      return wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_i_o);
++    }
++    break;
+   }
+-  return ((a_width + 31u) / 32u);
++  return wuffs_base__make_status(NULL);
+ }
+ 
+-// -------- func jpeg.decoder.decode_frame_config
++// -------- func gif.decoder.lzw_init
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_jpeg__decoder__decode_frame_config(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__frame_config* a_dst,
+-    wuffs_base__io_buffer* a_src) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-  if (!a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 2)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+-  }
+-  self->private_impl.active_coroutine = 0;
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-
+-  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    while (true) {
+-      {
+-        wuffs_base__status t_0 = wuffs_jpeg__decoder__do_decode_frame_config(self, a_dst, a_src);
+-        v_status = t_0;
+-      }
+-      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_jpeg__error__truncated_input);
+-        goto exit;
+-      }
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+-    }
++static wuffs_base__empty_struct
++wuffs_gif__decoder__lzw_init(
++    wuffs_gif__decoder* self) {
++  uint32_t v_i = 0;
+ 
+-    ok:
+-    self->private_impl.p_decode_frame_config[0] = 0;
+-    goto exit;
++  self->private_impl.f_lzw_literal_width = 8u;
++  if (self->private_impl.f_lzw_pending_literal_width_plus_one > 0u) {
++    self->private_impl.f_lzw_literal_width = (self->private_impl.f_lzw_pending_literal_width_plus_one - 1u);
+   }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
+-
+-  goto exit;
+-  exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  self->private_impl.f_lzw_clear_code = (((uint32_t)(1u)) << self->private_impl.f_lzw_literal_width);
++  self->private_impl.f_lzw_end_code = (self->private_impl.f_lzw_clear_code + 1u);
++  self->private_impl.f_lzw_save_code = self->private_impl.f_lzw_end_code;
++  self->private_impl.f_lzw_prev_code = self->private_impl.f_lzw_end_code;
++  self->private_impl.f_lzw_width = (self->private_impl.f_lzw_literal_width + 1u);
++  self->private_impl.f_lzw_bits = 0u;
++  self->private_impl.f_lzw_n_bits = 0u;
++  self->private_impl.f_lzw_output_ri = 0u;
++  self->private_impl.f_lzw_output_wi = 0u;
++  v_i = 0u;
++  while (v_i < self->private_impl.f_lzw_clear_code) {
++    self->private_data.f_lzw_lm1s[v_i] = 0u;
++    self->private_data.f_lzw_suffixes[v_i][0u] = ((uint8_t)(v_i));
++    v_i += 1u;
+   }
+-  return status;
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-// -------- func jpeg.decoder.do_decode_frame_config
++// -------- func gif.decoder.lzw_read_from
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_jpeg__decoder__do_decode_frame_config(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__frame_config* a_dst,
++static wuffs_base__empty_struct
++wuffs_gif__decoder__lzw_read_from(
++    wuffs_gif__decoder* self,
+     wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++  uint32_t v_clear_code = 0;
++  uint32_t v_end_code = 0;
++  uint32_t v_save_code = 0;
++  uint32_t v_prev_code = 0;
++  uint32_t v_width = 0;
++  uint32_t v_bits = 0;
++  uint32_t v_n_bits = 0;
++  uint32_t v_output_wi = 0;
++  uint32_t v_code = 0;
++  uint32_t v_c = 0;
++  uint32_t v_o = 0;
++  uint32_t v_steps = 0;
++  uint8_t v_first_byte = 0;
++  uint16_t v_lm1_b = 0;
++  uint16_t v_lm1_a = 0;
+ 
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -43434,83 +43552,370 @@ wuffs_jpeg__decoder__do_decode_frame_config(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    if (self->private_impl.f_call_sequence == 32u) {
+-    } else if (self->private_impl.f_call_sequence < 32u) {
+-      if (a_src) {
+-        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  v_clear_code = self->private_impl.f_lzw_clear_code;
++  v_end_code = self->private_impl.f_lzw_end_code;
++  v_save_code = self->private_impl.f_lzw_save_code;
++  v_prev_code = self->private_impl.f_lzw_prev_code;
++  v_width = self->private_impl.f_lzw_width;
++  v_bits = self->private_impl.f_lzw_bits;
++  v_n_bits = self->private_impl.f_lzw_n_bits;
++  v_output_wi = self->private_impl.f_lzw_output_wi;
++  while (true) {
++    if (v_n_bits < v_width) {
++      if (((uint64_t)(io2_a_src - iop_a_src)) >= 4u) {
++        v_bits |= ((uint32_t)(wuffs_base__peek_u32le__no_bounds_check(iop_a_src) << v_n_bits));
++        iop_a_src += ((31u - v_n_bits) >> 3u);
++        v_n_bits |= 24u;
++      } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++        if (a_src && a_src->meta.closed) {
++          self->private_impl.f_lzw_read_from_return_value = 3u;
++        } else {
++          self->private_impl.f_lzw_read_from_return_value = 2u;
++        }
++        break;
++      } else {
++        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
++        iop_a_src += 1u;
++        v_n_bits += 8u;
++        if (v_n_bits >= v_width) {
++        } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++          if (a_src && a_src->meta.closed) {
++            self->private_impl.f_lzw_read_from_return_value = 3u;
++          } else {
++            self->private_impl.f_lzw_read_from_return_value = 2u;
++          }
++          break;
++        } else {
++          v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
++          iop_a_src += 1u;
++          v_n_bits += 8u;
++          if (v_n_bits < v_width) {
++            self->private_impl.f_lzw_read_from_return_value = 5u;
++            break;
++          }
++        }
+       }
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      status = wuffs_jpeg__decoder__do_decode_image_config(self, NULL, a_src);
+-      if (a_src) {
+-        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++    }
++    v_code = ((v_bits) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U32(v_width));
++    v_bits >>= v_width;
++    v_n_bits -= v_width;
++    if (v_code < v_clear_code) {
++      self->private_data.f_lzw_output[v_output_wi] = ((uint8_t)(v_code));
++      v_output_wi = ((v_output_wi + 1u) & 8191u);
++      if (v_save_code <= 4095u) {
++        v_lm1_a = ((uint16_t)(((uint16_t)(self->private_data.f_lzw_lm1s[v_prev_code] + 1u)) & 4095u));
++        self->private_data.f_lzw_lm1s[v_save_code] = v_lm1_a;
++        if (((uint16_t)(v_lm1_a % 8u)) != 0u) {
++          self->private_impl.f_lzw_prefixes[v_save_code] = self->private_impl.f_lzw_prefixes[v_prev_code];
++          memcpy(self->private_data.f_lzw_suffixes[v_save_code],self->private_data.f_lzw_suffixes[v_prev_code], sizeof(self->private_data.f_lzw_suffixes[v_save_code]));
++          self->private_data.f_lzw_suffixes[v_save_code][((uint16_t)(v_lm1_a % 8u))] = ((uint8_t)(v_code));
++        } else {
++          self->private_impl.f_lzw_prefixes[v_save_code] = ((uint16_t)(v_prev_code));
++          self->private_data.f_lzw_suffixes[v_save_code][0u] = ((uint8_t)(v_code));
++        }
++        v_save_code += 1u;
++        if (v_width < 12u) {
++          v_width += (1u & (v_save_code >> v_width));
++        }
++        v_prev_code = v_code;
+       }
+-      if (status.repr) {
+-        goto suspend;
++    } else if (v_code <= v_end_code) {
++      if (v_code == v_end_code) {
++        self->private_impl.f_lzw_read_from_return_value = 0u;
++        break;
+       }
+-    } else if (self->private_impl.f_call_sequence == 40u) {
+-      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
+-        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
+-        goto exit;
++      v_save_code = v_end_code;
++      v_prev_code = v_end_code;
++      v_width = (self->private_impl.f_lzw_literal_width + 1u);
++    } else if (v_code <= v_save_code) {
++      v_c = v_code;
++      if (v_code == v_save_code) {
++        v_c = v_prev_code;
++      }
++      v_o = ((v_output_wi + (((uint32_t)(self->private_data.f_lzw_lm1s[v_c])) & 4294967288u)) & 8191u);
++      v_output_wi = ((v_output_wi + 1u + ((uint32_t)(self->private_data.f_lzw_lm1s[v_c]))) & 8191u);
++      v_steps = (((uint32_t)(self->private_data.f_lzw_lm1s[v_c])) >> 3u);
++      while (true) {
++        memcpy((self->private_data.f_lzw_output)+(v_o), (self->private_data.f_lzw_suffixes[v_c]), 8u);
++        if (v_steps <= 0u) {
++          break;
++        }
++        v_steps -= 1u;
++        v_o = (((uint32_t)(v_o - 8u)) & 8191u);
++        v_c = ((uint32_t)(self->private_impl.f_lzw_prefixes[v_c]));
++      }
++      v_first_byte = self->private_data.f_lzw_suffixes[v_c][0u];
++      if (v_code == v_save_code) {
++        self->private_data.f_lzw_output[v_output_wi] = v_first_byte;
++        v_output_wi = ((v_output_wi + 1u) & 8191u);
++      }
++      if (v_save_code <= 4095u) {
++        v_lm1_b = ((uint16_t)(((uint16_t)(self->private_data.f_lzw_lm1s[v_prev_code] + 1u)) & 4095u));
++        self->private_data.f_lzw_lm1s[v_save_code] = v_lm1_b;
++        if (((uint16_t)(v_lm1_b % 8u)) != 0u) {
++          self->private_impl.f_lzw_prefixes[v_save_code] = self->private_impl.f_lzw_prefixes[v_prev_code];
++          memcpy(self->private_data.f_lzw_suffixes[v_save_code],self->private_data.f_lzw_suffixes[v_prev_code], sizeof(self->private_data.f_lzw_suffixes[v_save_code]));
++          self->private_data.f_lzw_suffixes[v_save_code][((uint16_t)(v_lm1_b % 8u))] = v_first_byte;
++        } else {
++          self->private_impl.f_lzw_prefixes[v_save_code] = ((uint16_t)(v_prev_code));
++          self->private_data.f_lzw_suffixes[v_save_code][0u] = ((uint8_t)(v_first_byte));
++        }
++        v_save_code += 1u;
++        if (v_width < 12u) {
++          v_width += (1u & (v_save_code >> v_width));
++        }
++        v_prev_code = v_code;
+       }
+-    } else if (self->private_impl.f_call_sequence == 64u) {
+-      self->private_impl.f_call_sequence = 96u;
+-      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-      goto ok;
+     } else {
+-      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-      goto ok;
++      self->private_impl.f_lzw_read_from_return_value = 4u;
++      break;
+     }
+-    if (a_dst != NULL) {
+-      wuffs_base__frame_config__set(
+-          a_dst,
+-          wuffs_base__utility__make_rect_ie_u32(
+-          0u,
+-          0u,
+-          self->private_impl.f_width,
+-          self->private_impl.f_height),
+-          ((wuffs_base__flicks)(0u)),
+-          0u,
+-          self->private_impl.f_frame_config_io_position,
+-          0u,
+-          true,
+-          false,
+-          4278190080u);
++    if (v_output_wi > 4095u) {
++      self->private_impl.f_lzw_read_from_return_value = 1u;
++      break;
+     }
+-    self->private_impl.f_call_sequence = 64u;
+-
+-    ok:
+-    self->private_impl.p_do_decode_frame_config[0] = 0;
+-    goto exit;
+   }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-
+-  goto exit;
+-  exit:
++  if (self->private_impl.f_lzw_read_from_return_value != 2u) {
++    while (v_n_bits >= 8u) {
++      v_n_bits -= 8u;
++      if (iop_a_src > io1_a_src) {
++        iop_a_src--;
++      } else {
++        self->private_impl.f_lzw_read_from_return_value = 5u;
++        break;
++      }
++    }
++  }
++  self->private_impl.f_lzw_save_code = v_save_code;
++  self->private_impl.f_lzw_prev_code = v_prev_code;
++  self->private_impl.f_lzw_width = v_width;
++  self->private_impl.f_lzw_bits = v_bits;
++  self->private_impl.f_lzw_n_bits = v_n_bits;
++  self->private_impl.f_lzw_output_wi = v_output_wi;
+   if (a_src && a_src->data.ptr) {
+     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+ 
+-  return status;
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-// -------- func jpeg.decoder.decode_frame
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GIF)
++
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GZIP)
++
++// ---------------- Status Codes Implementations
++
++const char wuffs_gzip__error__bad_checksum[] = "#gzip: bad checksum";
++const char wuffs_gzip__error__bad_compression_method[] = "#gzip: bad compression method";
++const char wuffs_gzip__error__bad_encoding_flags[] = "#gzip: bad encoding flags";
++const char wuffs_gzip__error__bad_header[] = "#gzip: bad header";
++const char wuffs_gzip__error__truncated_input[] = "#gzip: truncated input";
++
++// ---------------- Private Consts
++
++// ---------------- Private Initializer Prototypes
++
++// ---------------- Private Function Prototypes
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_jpeg__decoder__decode_frame(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
++static wuffs_base__status
++wuffs_gzip__decoder__do_transform_io(
++    wuffs_gzip__decoder* self,
++    wuffs_base__io_buffer* a_dst,
+     wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts) {
++    wuffs_base__slice_u8 a_workbuf);
++
++// ---------------- VTables
++
++const wuffs_base__io_transformer__func_ptrs
++wuffs_gzip__decoder__func_ptrs_for__wuffs_base__io_transformer = {
++  (wuffs_base__optional_u63(*)(const void*))(&wuffs_gzip__decoder__dst_history_retain_length),
++  (uint64_t(*)(const void*,
++      uint32_t))(&wuffs_gzip__decoder__get_quirk),
++  (wuffs_base__status(*)(void*,
++      uint32_t,
++      uint64_t))(&wuffs_gzip__decoder__set_quirk),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__io_buffer*,
++      wuffs_base__io_buffer*,
++      wuffs_base__slice_u8))(&wuffs_gzip__decoder__transform_io),
++  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_gzip__decoder__workbuf_len),
++};
++
++// ---------------- Initializer Implementations
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_gzip__decoder__initialize(
++    wuffs_gzip__decoder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options){
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (sizeof(*self) != sizeof_star_self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  }
++  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
++      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++  }
++
++  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
++    // The whole point of this if-check is to detect an uninitialized *self.
++    // We disable the warning on GCC. Clang-5.0 does not have this warning.
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++#endif
++    if (self->private_impl.magic != 0) {
++      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++    }
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++  } else {
++    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
++      memset(self, 0, sizeof(*self));
++      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
++    } else {
++      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++    }
++  }
++
++  {
++    wuffs_base__status z = wuffs_crc32__ieee_hasher__initialize(
++        &self->private_data.f_checksum, sizeof(self->private_data.f_checksum), WUFFS_VERSION, options);
++    if (z.repr) {
++      return z;
++    }
++  }
++  {
++    wuffs_base__status z = wuffs_deflate__decoder__initialize(
++        &self->private_data.f_flate, sizeof(self->private_data.f_flate), WUFFS_VERSION, options);
++    if (z.repr) {
++      return z;
++    }
++  }
++  self->private_impl.magic = WUFFS_BASE__MAGIC;
++  self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
++      wuffs_base__io_transformer__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
++      (const void*)(&wuffs_gzip__decoder__func_ptrs_for__wuffs_base__io_transformer);
++  return wuffs_base__make_status(NULL);
++}
++
++wuffs_gzip__decoder*
++wuffs_gzip__decoder__alloc(void) {
++  wuffs_gzip__decoder* x =
++      (wuffs_gzip__decoder*)(calloc(1, sizeof(wuffs_gzip__decoder)));
++  if (!x) {
++    return NULL;
++  }
++  if (wuffs_gzip__decoder__initialize(
++      x, sizeof(wuffs_gzip__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++    free(x);
++    return NULL;
++  }
++  return x;
++}
++
++size_t
++sizeof__wuffs_gzip__decoder(void) {
++  return sizeof(wuffs_gzip__decoder);
++}
++
++// ---------------- Function Implementations
++
++// -------- func gzip.decoder.get_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_gzip__decoder__get_quirk(
++    const wuffs_gzip__decoder* self,
++    uint32_t a_key) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  if ((a_key == 1u) && self->private_impl.f_ignore_checksum) {
++    return 1u;
++  }
++  return 0u;
++}
++
++// -------- func gzip.decoder.set_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_gzip__decoder__set_quirk(
++    wuffs_gzip__decoder* self,
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++
++  if (a_key == 1u) {
++    self->private_impl.f_ignore_checksum = (a_value > 0u);
++    return wuffs_base__make_status(NULL);
++  }
++  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++}
++
++// -------- func gzip.decoder.dst_history_retain_length
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
++wuffs_gzip__decoder__dst_history_retain_length(
++    const wuffs_gzip__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__make_optional_u63(false, 0u);
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__make_optional_u63(false, 0u);
++  }
++
++  return wuffs_base__utility__make_optional_u63(true, 0u);
++}
++
++// -------- func gzip.decoder.workbuf_len
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_gzip__decoder__workbuf_len(
++    const wuffs_gzip__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++
++  return wuffs_base__utility__make_range_ii_u64(1u, 1u);
++}
++
++// -------- func gzip.decoder.transform_io
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_gzip__decoder__transform_io(
++    wuffs_gzip__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
+   if (!self) {
+     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+@@ -43525,65 +43930,41 @@ wuffs_jpeg__decoder__decode_frame(
+     return wuffs_base__make_status(wuffs_base__error__bad_argument);
+   }
+   if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 3)) {
++      (self->private_impl.active_coroutine != 1)) {
+     self->private_impl.magic = WUFFS_BASE__DISABLED;
+     return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+   }
+   self->private_impl.active_coroutine = 0;
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  wuffs_base__status v_ddf_status = wuffs_base__make_status(NULL);
+-  wuffs_base__status v_swizzle_status = wuffs_base__make_status(NULL);
+-  uint32_t v_scan_count = 0;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_frame[0];
++  uint32_t coro_susp_point = self->private_impl.p_transform_io;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+     while (true) {
+-      v_scan_count = self->private_impl.f_scan_count;
+       {
+-        wuffs_base__status t_0 = wuffs_jpeg__decoder__do_decode_frame(self,
+-            a_dst,
+-            a_src,
+-            a_blend,
+-            a_workbuf,
+-            a_opts);
+-        v_ddf_status = t_0;
+-      }
+-      if ((v_ddf_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        v_ddf_status = wuffs_base__make_status(wuffs_jpeg__error__truncated_input);
++        wuffs_base__status t_0 = wuffs_gzip__decoder__do_transform_io(self, a_dst, a_src, a_workbuf);
++        v_status = t_0;
+       }
+-      if (wuffs_base__status__is_error(&v_ddf_status) || (v_scan_count < self->private_impl.f_scan_count)) {
+-        if (self->private_impl.f_sof_marker >= 194u) {
+-          wuffs_jpeg__decoder__apply_progressive_idct(self, a_workbuf);
+-        }
+-        if (self->private_impl.f_num_components == 1u) {
+-          v_swizzle_status = wuffs_jpeg__decoder__swizzle_gray(self, a_dst, a_workbuf);
+-        } else {
+-          v_swizzle_status = wuffs_jpeg__decoder__swizzle_colorful(self, a_dst, a_workbuf);
+-        }
+-        if (wuffs_base__status__is_error(&v_ddf_status)) {
+-          status = v_ddf_status;
+-          goto exit;
+-        } else if (wuffs_base__status__is_error(&v_swizzle_status)) {
+-          status = v_swizzle_status;
+-          goto exit;
+-        }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_gzip__error__truncated_input);
++        goto exit;
+       }
+-      status = v_ddf_status;
++      status = v_status;
+       WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+     }
+ 
+     ok:
+-    self->private_impl.p_decode_frame[0] = 0;
++    self->private_impl.p_transform_io = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
++  self->private_impl.p_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
+ 
+   goto exit;
+   exit:
+@@ -43593,24 +43974,40 @@ wuffs_jpeg__decoder__decode_frame(
+   return status;
+ }
+ 
+-// -------- func jpeg.decoder.do_decode_frame
++// -------- func gzip.decoder.do_transform_io
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_jpeg__decoder__do_decode_frame(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
++wuffs_gzip__decoder__do_transform_io(
++    wuffs_gzip__decoder* self,
++    wuffs_base__io_buffer* a_dst,
+     wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts) {
++    wuffs_base__slice_u8 a_workbuf) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t v_pixfmt = 0;
++  uint8_t v_c8 = 0;
++  uint8_t v_flags = 0;
++  uint16_t v_xlen = 0;
++  uint64_t v_mark = 0;
++  uint32_t v_checksum_have = 0;
++  uint32_t v_decoded_length_have = 0;
+   wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-  uint8_t v_c = 0;
+-  uint8_t v_marker = 0;
++  uint32_t v_checksum_want = 0;
++  uint32_t v_decoded_length_want = 0;
+ 
++  uint8_t* iop_a_dst = NULL;
++  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
++    }
++  }
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -43622,236 +44019,269 @@ wuffs_jpeg__decoder__do_decode_frame(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0];
++  uint32_t coro_susp_point = self->private_impl.p_do_transform_io;
+   if (coro_susp_point) {
+-    v_marker = self->private_data.s_do_decode_frame[0].v_marker;
++    v_flags = self->private_data.s_do_transform_io.v_flags;
++    v_checksum_have = self->private_data.s_do_transform_io.v_checksum_have;
++    v_decoded_length_have = self->private_data.s_do_transform_io.v_decoded_length_have;
++    v_checksum_want = self->private_data.s_do_transform_io.v_checksum_want;
+   }
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if (self->private_impl.f_call_sequence == 64u) {
+-    } else if (self->private_impl.f_call_sequence < 64u) {
+-      if (a_src) {
+-        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-      }
++    {
+       WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      status = wuffs_jpeg__decoder__do_decode_frame_config(self, NULL, a_src);
+-      if (a_src) {
+-        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
+       }
+-      if (status.repr) {
++      uint8_t t_0 = *iop_a_src++;
++      v_c8 = t_0;
++    }
++    if (v_c8 != 31u) {
++      status = wuffs_base__make_status(wuffs_gzip__error__bad_header);
++      goto exit;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+         goto suspend;
+       }
+-    } else {
+-      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-      goto ok;
++      uint8_t t_1 = *iop_a_src++;
++      v_c8 = t_1;
+     }
+-    v_pixfmt = 536870920u;
+-    if (self->private_impl.f_num_components > 1u) {
+-      v_pixfmt = 2415954056u;
++    if (v_c8 != 139u) {
++      status = wuffs_base__make_status(wuffs_gzip__error__bad_header);
++      goto exit;
+     }
+-    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
+-        wuffs_base__pixel_buffer__pixel_format(a_dst),
+-        wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
+-        wuffs_base__utility__make_pixel_format(v_pixfmt),
+-        wuffs_base__utility__empty_slice_u8(),
+-        a_blend);
+-    if ( ! wuffs_base__status__is_ok(&v_status)) {
+-      status = v_status;
+-      if (wuffs_base__status__is_error(&status)) {
+-        goto exit;
+-      } else if (wuffs_base__status__is_suspension(&status)) {
+-        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
+-        goto exit;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
+       }
+-      goto ok;
++      uint8_t t_2 = *iop_a_src++;
++      v_c8 = t_2;
+     }
+-    if (self->private_impl.f_components_workbuf_offsets[8u] > ((uint64_t)(a_workbuf.len))) {
+-      status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
++    if (v_c8 != 8u) {
++      status = wuffs_base__make_status(wuffs_gzip__error__bad_compression_method);
+       goto exit;
+-    } else if (self->private_impl.f_components_workbuf_offsets[4u] < self->private_impl.f_components_workbuf_offsets[8u]) {
+-      wuffs_base__bulk_memset(a_workbuf.ptr + self->private_impl.f_components_workbuf_offsets[4u], (self->private_impl.f_components_workbuf_offsets[8u] - self->private_impl.f_components_workbuf_offsets[4u]), 0u);
+     }
+-    if (self->private_impl.f_components_workbuf_offsets[4u] <= ((uint64_t)(a_workbuf.len))) {
+-      wuffs_base__bulk_memset(a_workbuf.ptr, self->private_impl.f_components_workbuf_offsets[4u], 128u);
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_3 = *iop_a_src++;
++      v_flags = t_3;
+     }
+-    while (true) {
++    self->private_data.s_do_transform_io.scratch = 6u;
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++    if (self->private_data.s_do_transform_io.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++      self->private_data.s_do_transform_io.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++      iop_a_src = io2_a_src;
++      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++      goto suspend;
++    }
++    iop_a_src += self->private_data.s_do_transform_io.scratch;
++    if (((uint8_t)(v_flags & 4u)) != 0u) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++        uint16_t t_4;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++          t_4 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
++          iop_a_src += 2;
++        } else {
++          self->private_data.s_do_transform_io.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++            uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
++            if (num_bits_4 == 8) {
++              t_4 = ((uint16_t)(*scratch));
++              break;
++            }
++            num_bits_4 += 8u;
++            *scratch |= ((uint64_t)(num_bits_4)) << 56;
++          }
++        }
++        v_xlen = t_4;
++      }
++      self->private_data.s_do_transform_io.scratch = ((uint32_t)(v_xlen));
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++      if (self->private_data.s_do_transform_io.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++        self->private_data.s_do_transform_io.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++        iop_a_src = io2_a_src;
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      iop_a_src += self->private_data.s_do_transform_io.scratch;
++    }
++    if (((uint8_t)(v_flags & 8u)) != 0u) {
+       while (true) {
+         {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint8_t t_0 = *iop_a_src++;
+-          v_c = t_0;
++          uint8_t t_5 = *iop_a_src++;
++          v_c8 = t_5;
+         }
+-        if (v_c == 255u) {
++        if (v_c8 == 0u) {
+           break;
+         }
+       }
++    }
++    if (((uint8_t)(v_flags & 16u)) != 0u) {
+       while (true) {
+         {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint8_t t_1 = *iop_a_src++;
+-          v_c = t_1;
++          uint8_t t_6 = *iop_a_src++;
++          v_c8 = t_6;
+         }
+-        if (v_c != 255u) {
+-          v_marker = v_c;
++        if (v_c8 == 0u) {
+           break;
+         }
+       }
+-      if (v_marker == 0u) {
+-        continue;
+-      } else if ((208u <= v_marker) && (v_marker <= 217u)) {
+-        if (v_marker <= 215u) {
+-          continue;
++    }
++    if (((uint8_t)(v_flags & 2u)) != 0u) {
++      self->private_data.s_do_transform_io.scratch = 2u;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
++      if (self->private_data.s_do_transform_io.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++        self->private_data.s_do_transform_io.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++        iop_a_src = io2_a_src;
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      iop_a_src += self->private_data.s_do_transform_io.scratch;
++    }
++    if (((uint8_t)(v_flags & 224u)) != 0u) {
++      status = wuffs_base__make_status(wuffs_gzip__error__bad_encoding_flags);
++      goto exit;
++    }
++    while (true) {
++      v_mark = ((uint64_t)(iop_a_dst - io0_a_dst));
++      {
++        if (a_dst) {
++          a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+         }
+-      } else {
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-          uint32_t t_2;
+-          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-            t_2 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
+-            iop_a_src += 2;
+-          } else {
+-            self->private_data.s_do_decode_frame[0].scratch = 0;
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-            while (true) {
+-              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                goto suspend;
+-              }
+-              uint64_t* scratch = &self->private_data.s_do_decode_frame[0].scratch;
+-              uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu));
+-              *scratch >>= 8;
+-              *scratch <<= 8;
+-              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
+-              if (num_bits_2 == 8) {
+-                t_2 = ((uint32_t)(*scratch >> 48));
+-                break;
+-              }
+-              num_bits_2 += 8u;
+-              *scratch |= ((uint64_t)(num_bits_2));
+-            }
+-          }
+-          self->private_impl.f_payload_length = t_2;
++        if (a_src) {
++          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+         }
+-        if (self->private_impl.f_payload_length < 2u) {
+-          status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker);
+-          goto exit;
++        wuffs_base__status t_7 = wuffs_deflate__decoder__transform_io(&self->private_data.f_flate, a_dst, a_src, a_workbuf);
++        v_status = t_7;
++        if (a_dst) {
++          iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
++        }
++        if (a_src) {
++          iop_a_src = a_src->data.ptr + a_src->meta.ri;
+         }
+-        self->private_impl.f_payload_length -= 2u;
+       }
+-      if (v_marker < 192u) {
+-        status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
+-        goto exit;
+-      } else if (v_marker < 208u) {
+-        if (v_marker == 196u) {
+-          if (a_src) {
+-            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-          }
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-          status = wuffs_jpeg__decoder__decode_dht(self, a_src);
+-          if (a_src) {
+-            iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-          }
+-          if (status.repr) {
++      if ( ! self->private_impl.f_ignore_checksum) {
++        v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_checksum, wuffs_private_impl__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
++        v_decoded_length_have += ((uint32_t)(wuffs_private_impl__io__count_since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)))));
++      }
++      if (wuffs_base__status__is_ok(&v_status)) {
++        break;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(12);
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
++      uint32_t t_8;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_8 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_do_transform_io.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          continue;
+-        } else if (v_marker == 200u) {
+-          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
+-          goto exit;
+-        }
+-        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
+-        goto exit;
+-      } else if (v_marker < 224u) {
+-        if (v_marker < 217u) {
+-          status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker);
+-          goto exit;
+-        } else if (v_marker == 217u) {
+-          break;
+-        } else if (v_marker == 218u) {
+-          if (a_src) {
+-            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-          }
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+-          status = wuffs_jpeg__decoder__decode_sos(self, a_src, a_workbuf);
+-          if (a_src) {
+-            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++          uint32_t num_bits_8 = ((uint32_t)(*scratch >> 56));
++          *scratch <<= 8;
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_8;
++          if (num_bits_8 == 24) {
++            t_8 = ((uint32_t)(*scratch));
++            break;
+           }
+-          if (status.repr) {
++          num_bits_8 += 8u;
++          *scratch |= ((uint64_t)(num_bits_8)) << 56;
++        }
++      }
++      v_checksum_want = t_8;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
++      uint32_t t_9;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_9 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_do_transform_io.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          continue;
+-        } else if (v_marker == 219u) {
+-          if (a_src) {
+-            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-          }
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
+-          status = wuffs_jpeg__decoder__decode_dqt(self, a_src);
+-          if (a_src) {
+-            iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-          }
+-          if (status.repr) {
+-            goto suspend;
+-          }
+-          continue;
+-        } else if (v_marker == 221u) {
+-          if (a_src) {
+-            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-          }
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
+-          status = wuffs_jpeg__decoder__decode_dri(self, a_src);
+-          if (a_src) {
+-            iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-          }
+-          if (status.repr) {
+-            goto suspend;
++          uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++          uint32_t num_bits_9 = ((uint32_t)(*scratch >> 56));
++          *scratch <<= 8;
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_9;
++          if (num_bits_9 == 24) {
++            t_9 = ((uint32_t)(*scratch));
++            break;
+           }
+-          continue;
+-        } else {
+-          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
+-          goto exit;
+-        }
+-      } else if (v_marker < 240u) {
+-      } else {
+-        if (v_marker == 254u) {
+-        } else {
+-          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
+-          goto exit;
++          num_bits_9 += 8u;
++          *scratch |= ((uint64_t)(num_bits_9)) << 56;
+         }
+       }
+-      self->private_data.s_do_decode_frame[0].scratch = self->private_impl.f_payload_length;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
+-      if (self->private_data.s_do_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-        self->private_data.s_do_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-        iop_a_src = io2_a_src;
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      iop_a_src += self->private_data.s_do_decode_frame[0].scratch;
+-      self->private_impl.f_payload_length = 0u;
++      v_decoded_length_want = t_9;
++    }
++    if ( ! self->private_impl.f_ignore_checksum && ((v_checksum_have != v_checksum_want) || (v_decoded_length_have != v_decoded_length_want))) {
++      status = wuffs_base__make_status(wuffs_gzip__error__bad_checksum);
++      goto exit;
+     }
+-    self->private_impl.f_call_sequence = 96u;
+ 
+     ok:
+-    self->private_impl.p_do_decode_frame[0] = 0;
++    self->private_impl.p_do_transform_io = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_do_decode_frame[0].v_marker = v_marker;
++  self->private_impl.p_do_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_do_transform_io.v_flags = v_flags;
++  self->private_data.s_do_transform_io.v_checksum_have = v_checksum_have;
++  self->private_data.s_do_transform_io.v_decoded_length_have = v_decoded_length_have;
++  self->private_data.s_do_transform_io.v_checksum_want = v_checksum_want;
+ 
+   goto exit;
+   exit:
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++  }
+   if (a_src && a_src->data.ptr) {
+     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+@@ -43859,891 +44289,398 @@ wuffs_jpeg__decoder__do_decode_frame(
+   return status;
+ }
+ 
+-// -------- func jpeg.decoder.decode_dht
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GZIP)
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_jpeg__decoder__decode_dht(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JPEG)
+ 
+-  uint8_t v_c = 0;
+-  uint8_t v_tc = 0;
+-  uint8_t v_th = 0;
+-  uint8_t v_tc4_th = 0;
+-  uint32_t v_working_total_count = 0;
+-  uint32_t v_total_count = 0;
+-  uint32_t v_i = 0;
+-  bool v_failed = false;
++// ---------------- Status Codes Implementations
+ 
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
++const char wuffs_jpeg__error__bad_dht_marker[] = "#jpeg: bad DHT marker";
++const char wuffs_jpeg__error__bad_dqt_marker[] = "#jpeg: bad DQT marker";
++const char wuffs_jpeg__error__bad_dri_marker[] = "#jpeg: bad DRI marker";
++const char wuffs_jpeg__error__bad_sof_marker[] = "#jpeg: bad SOF marker";
++const char wuffs_jpeg__error__bad_sos_marker[] = "#jpeg: bad SOS marker";
++const char wuffs_jpeg__error__bad_header[] = "#jpeg: bad header";
++const char wuffs_jpeg__error__bad_marker[] = "#jpeg: bad marker";
++const char wuffs_jpeg__error__bad_scan_count[] = "#jpeg: bad scan count";
++const char wuffs_jpeg__error__missing_huffman_table[] = "#jpeg: missing Huffman table";
++const char wuffs_jpeg__error__missing_quantization_table[] = "#jpeg: missing Quantization table";
++const char wuffs_jpeg__error__rejected_progressive_jpeg[] = "#jpeg: rejected progressive JPEG";
++const char wuffs_jpeg__error__truncated_input[] = "#jpeg: truncated input";
++const char wuffs_jpeg__error__unsupported_arithmetic_coding[] = "#jpeg: unsupported arithmetic coding";
++const char wuffs_jpeg__error__unsupported_color_model[] = "#jpeg: unsupported color model";
++const char wuffs_jpeg__error__unsupported_fractional_sampling[] = "#jpeg: unsupported fractional sampling";
++const char wuffs_jpeg__error__unsupported_hierarchical_coding[] = "#jpeg: unsupported hierarchical coding";
++const char wuffs_jpeg__error__unsupported_implicit_height[] = "#jpeg: unsupported implicit height";
++const char wuffs_jpeg__error__unsupported_lossless_coding[] = "#jpeg: unsupported lossless coding";
++const char wuffs_jpeg__error__unsupported_marker[] = "#jpeg: unsupported marker";
++const char wuffs_jpeg__error__unsupported_precision_12_bits[] = "#jpeg: unsupported precision (12 bits)";
++const char wuffs_jpeg__error__unsupported_precision_16_bits[] = "#jpeg: unsupported precision (16 bits)";
++const char wuffs_jpeg__error__unsupported_precision[] = "#jpeg: unsupported precision";
++const char wuffs_jpeg__error__unsupported_scan_count[] = "#jpeg: unsupported scan count";
++const char wuffs_jpeg__error__internal_error_inconsistent_decoder_state[] = "#jpeg: internal error: inconsistent decoder state";
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_dht[0];
+-  if (coro_susp_point) {
+-    v_tc4_th = self->private_data.s_decode_dht[0].v_tc4_th;
+-    v_total_count = self->private_data.s_decode_dht[0].v_total_count;
+-    v_i = self->private_data.s_decode_dht[0].v_i;
+-  }
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++// ---------------- Private Consts
+ 
+-    if (self->private_impl.f_sof_marker == 0u) {
+-      status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
+-      goto exit;
+-    }
+-    while (self->private_impl.f_payload_length > 0u) {
+-      if (self->private_impl.f_payload_length < 17u) {
+-        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
+-        goto exit;
+-      }
+-      self->private_impl.f_payload_length -= 17u;
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
+-        }
+-        uint8_t t_0 = *iop_a_src++;
+-        v_c = t_0;
+-      }
+-      if (((v_c >> 4u) > 1u) || ((v_c & 15u) > 3u)) {
+-        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
+-        goto exit;
+-      }
+-      v_tc = (v_c >> 4u);
+-      v_th = (v_c & 15u);
+-      v_tc4_th = ((uint8_t)(((v_tc * 4u) | v_th)));
+-      if ((self->private_impl.f_sof_marker == 192u) && ((v_tc4_th & 3u) > 1u)) {
+-        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
+-        goto exit;
+-      }
+-      v_i = 0u;
+-      while (v_i < 16u) {
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint8_t t_1 = *iop_a_src++;
+-          self->private_data.f_dht_temp_counts[v_i] = t_1;
+-        }
+-        v_i += 1u;
+-      }
+-      v_working_total_count = 0u;
+-      v_i = 0u;
+-      while (v_i < 16u) {
+-        v_working_total_count = ((v_working_total_count + ((uint32_t)(self->private_data.f_dht_temp_counts[v_i]))) & 65535u);
+-        v_i += 1u;
+-      }
+-      if ((v_working_total_count <= 0u) || (256u < v_working_total_count)) {
+-        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
+-        goto exit;
+-      }
+-      v_total_count = v_working_total_count;
+-      if (self->private_impl.f_payload_length < v_total_count) {
+-        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
+-        goto exit;
+-      }
+-      self->private_impl.f_payload_length -= v_total_count;
+-      v_i = 0u;
+-      while (v_i < v_total_count) {
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint8_t t_2 = *iop_a_src++;
+-          self->private_impl.f_huff_tables_symbols[v_tc4_th][v_i] = t_2;
+-        }
+-        v_i += 1u;
+-      }
+-      while (v_i < 256u) {
+-        self->private_impl.f_huff_tables_symbols[v_tc4_th][v_i] = 0u;
+-        v_i += 1u;
+-      }
+-      if ((v_tc4_th & 4u) == 0u) {
+-        v_i = 0u;
+-        while (v_i < v_total_count) {
+-          if (self->private_impl.f_huff_tables_symbols[v_tc4_th][v_i] > 15u) {
+-            status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
+-            goto exit;
+-          }
+-          v_i += 1u;
+-        }
+-      }
+-      v_failed = wuffs_jpeg__decoder__calculate_huff_tables(self, v_tc4_th, v_total_count);
+-      if (v_failed) {
+-        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
+-        goto exit;
+-      }
+-      self->private_impl.f_seen_dht[v_tc4_th] = true;
+-    }
++static const uint8_t
++WUFFS_JPEG__UNZIG[80] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 0u, 1u, 8u, 16u, 9u, 2u, 3u,
++  10u, 17u, 24u, 32u, 25u, 18u, 11u, 4u,
++  5u, 12u, 19u, 26u, 33u, 40u, 48u, 41u,
++  34u, 27u, 20u, 13u, 6u, 7u, 14u, 21u,
++  28u, 35u, 42u, 49u, 56u, 57u, 50u, 43u,
++  36u, 29u, 22u, 15u, 23u, 30u, 37u, 44u,
++  51u, 58u, 59u, 52u, 45u, 38u, 31u, 39u,
++  46u, 53u, 60u, 61u, 54u, 47u, 55u, 62u,
++  63u, 63u, 63u, 63u, 63u, 63u, 63u, 63u,
++  63u, 63u, 63u, 63u, 63u, 63u, 63u, 63u,
++};
+ 
+-    goto ok;
+-    ok:
+-    self->private_impl.p_decode_dht[0] = 0;
+-    goto exit;
+-  }
++static const uint8_t
++WUFFS_JPEG__BIAS_AND_CLAMP[1024] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  128u, 129u, 130u, 131u, 132u, 133u, 134u, 135u,
++  136u, 137u, 138u, 139u, 140u, 141u, 142u, 143u,
++  144u, 145u, 146u, 147u, 148u, 149u, 150u, 151u,
++  152u, 153u, 154u, 155u, 156u, 157u, 158u, 159u,
++  160u, 161u, 162u, 163u, 164u, 165u, 166u, 167u,
++  168u, 169u, 170u, 171u, 172u, 173u, 174u, 175u,
++  176u, 177u, 178u, 179u, 180u, 181u, 182u, 183u,
++  184u, 185u, 186u, 187u, 188u, 189u, 190u, 191u,
++  192u, 193u, 194u, 195u, 196u, 197u, 198u, 199u,
++  200u, 201u, 202u, 203u, 204u, 205u, 206u, 207u,
++  208u, 209u, 210u, 211u, 212u, 213u, 214u, 215u,
++  216u, 217u, 218u, 219u, 220u, 221u, 222u, 223u,
++  224u, 225u, 226u, 227u, 228u, 229u, 230u, 231u,
++  232u, 233u, 234u, 235u, 236u, 237u, 238u, 239u,
++  240u, 241u, 242u, 243u, 244u, 245u, 246u, 247u,
++  248u, 249u, 250u, 251u, 252u, 253u, 254u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 1u, 2u, 3u, 4u, 5u, 6u, 7u,
++  8u, 9u, 10u, 11u, 12u, 13u, 14u, 15u,
++  16u, 17u, 18u, 19u, 20u, 21u, 22u, 23u,
++  24u, 25u, 26u, 27u, 28u, 29u, 30u, 31u,
++  32u, 33u, 34u, 35u, 36u, 37u, 38u, 39u,
++  40u, 41u, 42u, 43u, 44u, 45u, 46u, 47u,
++  48u, 49u, 50u, 51u, 52u, 53u, 54u, 55u,
++  56u, 57u, 58u, 59u, 60u, 61u, 62u, 63u,
++  64u, 65u, 66u, 67u, 68u, 69u, 70u, 71u,
++  72u, 73u, 74u, 75u, 76u, 77u, 78u, 79u,
++  80u, 81u, 82u, 83u, 84u, 85u, 86u, 87u,
++  88u, 89u, 90u, 91u, 92u, 93u, 94u, 95u,
++  96u, 97u, 98u, 99u, 100u, 101u, 102u, 103u,
++  104u, 105u, 106u, 107u, 108u, 109u, 110u, 111u,
++  112u, 113u, 114u, 115u, 116u, 117u, 118u, 119u,
++  120u, 121u, 122u, 123u, 124u, 125u, 126u, 127u,
++};
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_dht[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_decode_dht[0].v_tc4_th = v_tc4_th;
+-  self->private_data.s_decode_dht[0].v_total_count = v_total_count;
+-  self->private_data.s_decode_dht[0].v_i = v_i;
++static const uint16_t
++WUFFS_JPEG__EXTEND[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 65535u, 65533u, 65529u, 65521u, 65505u, 65473u, 65409u,
++  65281u, 65025u, 64513u, 63489u, 61441u, 57345u, 49153u, 32769u,
++};
+ 
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
++static const uint8_t
++WUFFS_JPEG__DEFAULT_HUFF_TABLE_DC_LUMA[29] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 0u, 1u, 5u, 1u, 1u, 1u, 1u,
++  1u, 1u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 1u, 2u, 3u, 4u, 5u, 6u,
++  7u, 8u, 9u, 10u, 11u,
++};
+ 
+-  return status;
+-}
++static const uint8_t
++WUFFS_JPEG__DEFAULT_HUFF_TABLE_DC_CHROMA[29] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  1u, 0u, 3u, 1u, 1u, 1u, 1u, 1u,
++  1u, 1u, 1u, 1u, 0u, 0u, 0u, 0u,
++  0u, 0u, 1u, 2u, 3u, 4u, 5u, 6u,
++  7u, 8u, 9u, 10u, 11u,
++};
+ 
+-// -------- func jpeg.decoder.calculate_huff_tables
++static const uint8_t
++WUFFS_JPEG__DEFAULT_HUFF_TABLE_AC_LUMA[179] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  16u, 0u, 2u, 1u, 3u, 3u, 2u, 4u,
++  3u, 5u, 5u, 4u, 4u, 0u, 0u, 1u,
++  125u, 1u, 2u, 3u, 0u, 4u, 17u, 5u,
++  18u, 33u, 49u, 65u, 6u, 19u, 81u, 97u,
++  7u, 34u, 113u, 20u, 50u, 129u, 145u, 161u,
++  8u, 35u, 66u, 177u, 193u, 21u, 82u, 209u,
++  240u, 36u, 51u, 98u, 114u, 130u, 9u, 10u,
++  22u, 23u, 24u, 25u, 26u, 37u, 38u, 39u,
++  40u, 41u, 42u, 52u, 53u, 54u, 55u, 56u,
++  57u, 58u, 67u, 68u, 69u, 70u, 71u, 72u,
++  73u, 74u, 83u, 84u, 85u, 86u, 87u, 88u,
++  89u, 90u, 99u, 100u, 101u, 102u, 103u, 104u,
++  105u, 106u, 115u, 116u, 117u, 118u, 119u, 120u,
++  121u, 122u, 131u, 132u, 133u, 134u, 135u, 136u,
++  137u, 138u, 146u, 147u, 148u, 149u, 150u, 151u,
++  152u, 153u, 154u, 162u, 163u, 164u, 165u, 166u,
++  167u, 168u, 169u, 170u, 178u, 179u, 180u, 181u,
++  182u, 183u, 184u, 185u, 186u, 194u, 195u, 196u,
++  197u, 198u, 199u, 200u, 201u, 202u, 210u, 211u,
++  212u, 213u, 214u, 215u, 216u, 217u, 218u, 225u,
++  226u, 227u, 228u, 229u, 230u, 231u, 232u, 233u,
++  234u, 241u, 242u, 243u, 244u, 245u, 246u, 247u,
++  248u, 249u, 250u,
++};
++
++static const uint8_t
++WUFFS_JPEG__DEFAULT_HUFF_TABLE_AC_CHROMA[179] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  17u, 0u, 2u, 1u, 2u, 4u, 4u, 3u,
++  4u, 7u, 5u, 4u, 4u, 0u, 1u, 2u,
++  119u, 0u, 1u, 2u, 3u, 17u, 4u, 5u,
++  33u, 49u, 6u, 18u, 65u, 81u, 7u, 97u,
++  113u, 19u, 34u, 50u, 129u, 8u, 20u, 66u,
++  145u, 161u, 177u, 193u, 9u, 35u, 51u, 82u,
++  240u, 21u, 98u, 114u, 209u, 10u, 22u, 36u,
++  52u, 225u, 37u, 241u, 23u, 24u, 25u, 26u,
++  38u, 39u, 40u, 41u, 42u, 53u, 54u, 55u,
++  56u, 57u, 58u, 67u, 68u, 69u, 70u, 71u,
++  72u, 73u, 74u, 83u, 84u, 85u, 86u, 87u,
++  88u, 89u, 90u, 99u, 100u, 101u, 102u, 103u,
++  104u, 105u, 106u, 115u, 116u, 117u, 118u, 119u,
++  120u, 121u, 122u, 130u, 131u, 132u, 133u, 134u,
++  135u, 136u, 137u, 138u, 146u, 147u, 148u, 149u,
++  150u, 151u, 152u, 153u, 154u, 162u, 163u, 164u,
++  165u, 166u, 167u, 168u, 169u, 170u, 178u, 179u,
++  180u, 181u, 182u, 183u, 184u, 185u, 186u, 194u,
++  195u, 196u, 197u, 198u, 199u, 200u, 201u, 202u,
++  210u, 211u, 212u, 213u, 214u, 215u, 216u, 217u,
++  218u, 226u, 227u, 228u, 229u, 230u, 231u, 232u,
++  233u, 234u, 242u, 243u, 244u, 245u, 246u, 247u,
++  248u, 249u, 250u,
++};
++
++#define WUFFS_JPEG__QUIRKS_BASE 1220532224u
++
++// ---------------- Private Initializer Prototypes
++
++// ---------------- Private Function Prototypes
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static bool
+-wuffs_jpeg__decoder__calculate_huff_tables(
++static wuffs_base__empty_struct
++wuffs_jpeg__decoder__decode_idct(
+     wuffs_jpeg__decoder* self,
+-    uint8_t a_tc4_th,
+-    uint32_t a_total_count) {
+-  uint32_t v_i = 0;
+-  uint8_t v_j = 0;
+-  uint8_t v_k = 0;
+-  uint32_t v_bit_length_minus_one = 0;
+-  uint8_t v_bit_length = 0;
+-  uint32_t v_bit_string = 0;
+-  uint32_t v_slow = 0;
+-  uint8_t v_prefix = 0;
+-  uint16_t v_fast = 0;
+-  uint32_t v_reps = 0;
++    wuffs_base__slice_u8 a_dst_buffer,
++    uint64_t a_dst_stride,
++    uint32_t a_q);
+ 
+-  v_i = 0u;
+-  v_k = 0u;
+-  v_bit_length_minus_one = 0u;
+-  while (v_i < a_total_count) {
+-    while (v_k >= self->private_data.f_dht_temp_counts[v_bit_length_minus_one]) {
+-      v_k = 0u;
+-      v_bit_length_minus_one = ((v_bit_length_minus_one + 1u) & 15u);
+-    }
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wconversion"
+-#endif
+-    v_k += 1u;
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-    self->private_data.f_dht_temp_bit_lengths[v_i] = ((uint8_t)((v_bit_length_minus_one + 1u)));
+-    v_i += 1u;
+-  }
+-  v_bit_length = 0u;
+-  v_bit_string = 0u;
+-  v_i = 0u;
+-  while (v_i < a_total_count) {
+-    while (v_bit_length < self->private_data.f_dht_temp_bit_lengths[v_i]) {
+-      if (v_bit_length >= 16u) {
+-        return true;
+-      }
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wconversion"
+-#endif
+-      v_bit_length += 1u;
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-      v_bit_string <<= 1u;
+-    }
+-    self->private_data.f_dht_temp_bit_strings[v_i] = ((uint16_t)(v_bit_string));
+-    v_bit_string += 1u;
+-    if ((v_bit_string >> v_bit_length) > 0u) {
+-      return true;
+-    }
+-    v_i += 1u;
+-  }
+-  v_k = 0u;
+-  v_bit_length_minus_one = 0u;
+-  while (true) {
+-    if (self->private_data.f_dht_temp_counts[v_bit_length_minus_one] == 0u) {
+-      self->private_impl.f_huff_tables_slow[a_tc4_th][v_bit_length_minus_one] = 0u;
+-    } else {
+-      v_slow = (255u & ((uint32_t)(((uint32_t)(v_k)) - ((uint32_t)(self->private_data.f_dht_temp_bit_strings[v_k])))));
+-      v_k += self->private_data.f_dht_temp_counts[v_bit_length_minus_one];
+-      self->private_impl.f_huff_tables_slow[a_tc4_th][v_bit_length_minus_one] = (v_slow | ((((uint32_t)(self->private_data.f_dht_temp_bit_strings[((uint8_t)(v_k - 1u))])) + 1u) << 8u));
+-    }
+-    v_bit_length_minus_one = ((v_bit_length_minus_one + 1u) & 15u);
+-    if (v_bit_length_minus_one == 0u) {
+-      break;
+-    }
+-  }
+-  v_i = 0u;
+-  while (v_i < 256u) {
+-    self->private_impl.f_huff_tables_fast[a_tc4_th][v_i] = 65535u;
+-    v_i += 1u;
+-  }
+-  v_j = 0u;
+-  v_bit_length_minus_one = 0u;
+-  while (v_bit_length_minus_one < 8u) {
+-    v_k = 0u;
+-    while (v_k < self->private_data.f_dht_temp_counts[v_bit_length_minus_one]) {
+-      v_prefix = ((uint8_t)((((uint32_t)(self->private_data.f_dht_temp_bit_strings[v_j])) << (7u - v_bit_length_minus_one))));
+-      v_fast = ((uint16_t)(((((uint32_t)((v_bit_length_minus_one + 1u))) << 8u) | ((uint32_t)(self->private_impl.f_huff_tables_symbols[a_tc4_th][v_j])))));
+-      v_reps = (((uint32_t)(1u)) << (7u - v_bit_length_minus_one));
+-      while (v_reps > 0u) {
+-        self->private_impl.f_huff_tables_fast[a_tc4_th][v_prefix] = v_fast;
+-        v_prefix += 1u;
+-        v_reps -= 1u;
+-      }
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wconversion"
+-#endif
+-      v_k += 1u;
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-      v_j += 1u;
+-    }
+-    v_bit_length_minus_one += 1u;
+-  }
+-  return false;
+-}
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_jpeg__decoder__decode_idct__choosy_default(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__slice_u8 a_dst_buffer,
++    uint64_t a_dst_stride,
++    uint32_t a_q);
+ 
+-// -------- func jpeg.decoder.decode_sos
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_jpeg__decoder__decode_idct_x86_avx2(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__slice_u8 a_dst_buffer,
++    uint64_t a_dst_stride,
++    uint32_t a_q);
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_jpeg__decoder__decode_sos(
++wuffs_jpeg__decoder__do_decode_image_config(
+     wuffs_jpeg__decoder* self,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__slice_u8 a_workbuf) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  uint32_t v_my = 0;
+-  uint32_t v_mx = 0;
+-  uint32_t v_decode_mcu_result = 0;
+-  uint32_t v_bitstream_length = 0;
+-
+-  uint32_t coro_susp_point = self->private_impl.p_decode_sos[0];
+-  if (coro_susp_point) {
+-    v_my = self->private_data.s_decode_sos[0].v_my;
+-    v_mx = self->private_data.s_decode_sos[0].v_mx;
+-  }
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src);
+ 
+-    if (self->private_impl.f_scan_count >= 64u) {
+-      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_scan_count);
+-      goto exit;
+-    }
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-    status = wuffs_jpeg__decoder__prepare_scan(self, a_src);
+-    if (status.repr) {
+-      goto suspend;
+-    }
+-    self->private_impl.f_next_restart_marker = 0u;
+-    self->private_impl.f_mcu_previous_dc_values[0u] = 0u;
+-    self->private_impl.f_mcu_previous_dc_values[1u] = 0u;
+-    self->private_impl.f_mcu_previous_dc_values[2u] = 0u;
+-    self->private_impl.f_mcu_previous_dc_values[3u] = 0u;
+-    self->private_impl.f_restarts_remaining = self->private_impl.f_restart_interval;
+-    self->private_impl.f_eob_run = 0u;
+-    self->private_impl.f_bitstream_bits = 0u;
+-    self->private_impl.f_bitstream_n_bits = 0u;
+-    self->private_impl.f_bitstream_ri = 0u;
+-    self->private_impl.f_bitstream_wi = 0u;
+-    self->private_impl.f_bitstream_padding = 12345u;
+-    wuffs_jpeg__decoder__fill_bitstream(self, a_src);
+-    v_my = 0u;
+-    while (v_my < self->private_impl.f_scan_height_in_mcus) {
+-      v_mx = 0u;
+-      while (v_mx < self->private_impl.f_scan_width_in_mcus) {
+-        self->private_impl.f_mcu_current_block = 0u;
+-        self->private_impl.f_mcu_zig_index = ((uint32_t)(self->private_impl.f_scan_ss));
+-        if (self->private_impl.f_sof_marker >= 194u) {
+-          wuffs_jpeg__decoder__load_mcu_blocks(self, v_mx, v_my, a_workbuf);
+-        }
+-        while (true) {
+-          v_decode_mcu_result = wuffs_jpeg__decoder__decode_mcu(self, a_workbuf, v_mx, v_my);
+-          if (v_decode_mcu_result == 0u) {
+-            break;
+-          } else if (v_decode_mcu_result != 1u) {
+-            status = wuffs_base__make_status(wuffs_jpeg__error__internal_error_inconsistent_decoder_state);
+-            goto exit;
+-          }
+-          while (true) {
+-            v_bitstream_length = ((uint32_t)(self->private_impl.f_bitstream_wi - self->private_impl.f_bitstream_ri));
+-            wuffs_jpeg__decoder__fill_bitstream(self, a_src);
+-            if (v_bitstream_length < ((uint32_t)(self->private_impl.f_bitstream_wi - self->private_impl.f_bitstream_ri))) {
+-              break;
+-            } else if (self->private_impl.f_bitstream_padding == 0u) {
+-              status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
+-              goto exit;
+-            } else if ((a_src && a_src->meta.closed) &&  ! self->private_impl.f_bitstream_is_closed) {
+-              if (self->private_impl.f_bitstream_wi < 1024u) {
+-                wuffs_base__bulk_memset(&self->private_data.f_bitstream_buffer[self->private_impl.f_bitstream_wi], 264u, 0u);
+-                self->private_impl.f_bitstream_wi += 264u;
+-                self->private_impl.f_bitstream_is_closed = true;
+-              }
+-              break;
+-            }
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
+-          }
+-        }
+-        if (self->private_impl.f_sof_marker >= 194u) {
+-          wuffs_jpeg__decoder__save_mcu_blocks(self, v_mx, v_my, a_workbuf);
+-        }
+-        if (self->private_impl.f_restarts_remaining > 0u) {
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wconversion"
+-#endif
+-          self->private_impl.f_restarts_remaining -= 1u;
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-          if (self->private_impl.f_restarts_remaining == 0u) {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-            status = wuffs_jpeg__decoder__skip_past_the_next_restart_marker(self, a_src);
+-            if (status.repr) {
+-              goto suspend;
+-            }
+-            self->private_impl.f_mcu_previous_dc_values[0u] = 0u;
+-            self->private_impl.f_mcu_previous_dc_values[1u] = 0u;
+-            self->private_impl.f_mcu_previous_dc_values[2u] = 0u;
+-            self->private_impl.f_mcu_previous_dc_values[3u] = 0u;
+-            self->private_impl.f_restarts_remaining = self->private_impl.f_restart_interval;
+-            self->private_impl.f_eob_run = 0u;
+-            self->private_impl.f_bitstream_bits = 0u;
+-            self->private_impl.f_bitstream_n_bits = 0u;
+-            self->private_impl.f_bitstream_ri = 0u;
+-            self->private_impl.f_bitstream_wi = 0u;
+-            self->private_impl.f_bitstream_padding = 12345u;
+-          }
+-        }
+-        v_mx += 1u;
+-      }
+-      v_my += 1u;
+-    }
+-    wuffs_base__u32__sat_add_indirect(&self->private_impl.f_scan_count, 1u);
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_jpeg__decoder__decode_dqt(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__io_buffer* a_src);
+ 
+-    ok:
+-    self->private_impl.p_decode_sos[0] = 0;
+-    goto exit;
+-  }
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_jpeg__decoder__decode_dri(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__io_buffer* a_src);
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_sos[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_decode_sos[0].v_my = v_my;
+-  self->private_data.s_decode_sos[0].v_mx = v_mx;
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_jpeg__decoder__decode_appn(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__io_buffer* a_src,
++    uint8_t a_marker);
+ 
+-  goto exit;
+-  exit:
+-  return status;
+-}
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_jpeg__decoder__decode_sof(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__io_buffer* a_src);
+ 
+-// -------- func jpeg.decoder.prepare_scan
++WUFFS_BASE__GENERATED_C_CODE
++static uint32_t
++wuffs_jpeg__decoder__quantize_dimension(
++    const wuffs_jpeg__decoder* self,
++    uint32_t a_width,
++    uint8_t a_h,
++    uint8_t a_max_incl_h);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_jpeg__decoder__prepare_scan(
++wuffs_jpeg__decoder__do_decode_frame_config(
+     wuffs_jpeg__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  uint8_t v_c = 0;
+-  uint32_t v_i = 0;
+-  uint32_t v_j = 0;
+-  uint32_t v_j_max_incl = 0;
+-  bool v_failed = false;
+-
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
+-
+-  uint32_t coro_susp_point = self->private_impl.p_prepare_scan[0];
+-  if (coro_susp_point) {
+-    v_i = self->private_data.s_prepare_scan[0].v_i;
+-  }
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    if ((self->private_impl.f_payload_length < 6u) || (self->private_impl.f_payload_length > 12u)) {
+-      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
+-      goto exit;
+-    }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_0 = *iop_a_src++;
+-      v_c = t_0;
+-    }
+-    if ((v_c < 1u) || (v_c > 4u)) {
+-      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
+-      goto exit;
+-    }
+-    self->private_impl.f_scan_num_components = ((uint32_t)(v_c));
+-    if ((self->private_impl.f_scan_num_components > self->private_impl.f_num_components) || (self->private_impl.f_payload_length != (4u + (2u * self->private_impl.f_scan_num_components)))) {
+-      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
+-      goto exit;
+-    }
+-    self->private_impl.f_payload_length = 0u;
+-    v_i = 0u;
+-    while (v_i < self->private_impl.f_scan_num_components) {
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
+-        }
+-        uint8_t t_1 = *iop_a_src++;
+-        v_c = t_1;
+-      }
+-      v_j = 0u;
+-      while (true) {
+-        if (v_j >= self->private_impl.f_num_components) {
+-          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
+-          goto exit;
+-        }
+-        if (v_c == self->private_impl.f_components_c[v_j]) {
+-          if ( ! self->private_impl.f_seen_dqt[self->private_impl.f_components_tq[v_j]]) {
+-            status = wuffs_base__make_status(wuffs_jpeg__error__missing_quantization_table);
+-            goto exit;
+-          }
+-          self->private_impl.f_scan_comps_cselector[v_i] = ((uint8_t)(v_j));
+-          break;
+-        }
+-        v_j += 1u;
+-      }
+-      v_j = 0u;
+-      while (v_j < v_i) {
+-        if (self->private_impl.f_scan_comps_cselector[v_i] == self->private_impl.f_scan_comps_cselector[v_j]) {
+-          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
+-          goto exit;
+-        }
+-        v_j += 1u;
+-      }
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
+-        }
+-        uint8_t t_2 = *iop_a_src++;
+-        v_c = t_2;
+-      }
+-      if (((v_c >> 4u) > 3u) || ((v_c & 15u) > 3u)) {
+-        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
+-        goto exit;
+-      }
+-      self->private_impl.f_scan_comps_td[v_i] = (v_c >> 4u);
+-      self->private_impl.f_scan_comps_ta[v_i] = (v_c & 15u);
+-      if (self->private_impl.f_sof_marker == 192u) {
+-        if ((self->private_impl.f_scan_comps_td[v_i] > 1u) || (self->private_impl.f_scan_comps_ta[v_i] > 1u)) {
+-          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
+-          goto exit;
+-        }
+-      }
+-      v_i += 1u;
+-    }
+-    if (self->private_impl.f_sof_marker < 194u) {
+-      self->private_data.s_prepare_scan[0].scratch = 3u;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-      if (self->private_data.s_prepare_scan[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-        self->private_data.s_prepare_scan[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-        iop_a_src = io2_a_src;
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      iop_a_src += self->private_data.s_prepare_scan[0].scratch;
+-      self->private_impl.f_scan_ss = 0u;
+-      self->private_impl.f_scan_se = 63u;
+-      self->private_impl.f_scan_ah = 0u;
+-      self->private_impl.f_scan_al = 0u;
+-    } else {
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
+-        }
+-        uint8_t t_3 = *iop_a_src++;
+-        v_c = t_3;
+-      }
+-      if (v_c > 63u) {
+-        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
+-        goto exit;
+-      }
+-      self->private_impl.f_scan_ss = v_c;
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
+-        }
+-        uint8_t t_4 = *iop_a_src++;
+-        v_c = t_4;
+-      }
+-      if ((v_c > 63u) || (v_c < self->private_impl.f_scan_ss)) {
+-        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
+-        goto exit;
+-      }
+-      self->private_impl.f_scan_se = v_c;
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
+-        }
+-        uint8_t t_5 = *iop_a_src++;
+-        v_c = t_5;
+-      }
+-      if (((v_c >> 4u) > 14u) || ((v_c & 15u) > 13u)) {
+-        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
+-        goto exit;
+-      }
+-      self->private_impl.f_scan_ah = (v_c >> 4u);
+-      self->private_impl.f_scan_al = (v_c & 15u);
+-      if (self->private_impl.f_scan_ah > 0u) {
+-        if ((self->private_impl.f_scan_ah - 1u) != self->private_impl.f_scan_al) {
+-          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
+-          goto exit;
+-        }
+-      }
+-      if (self->private_impl.f_scan_ss == 0u) {
+-        if (self->private_impl.f_scan_se != 0u) {
+-          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
+-          goto exit;
+-        } else if (self->private_impl.f_scan_ah == 0u) {
+-          self->private_impl.choosy_decode_mcu = (
+-              &wuffs_jpeg__decoder__decode_mcu_progressive_dc_high_bits);
+-        } else {
+-          self->private_impl.choosy_decode_mcu = (
+-              &wuffs_jpeg__decoder__decode_mcu_progressive_dc_low_bit);
+-        }
+-      } else {
+-        if (self->private_impl.f_scan_num_components != 1u) {
+-          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
+-          goto exit;
+-        } else if (self->private_impl.f_scan_ah == 0u) {
+-          self->private_impl.choosy_decode_mcu = (
+-              &wuffs_jpeg__decoder__decode_mcu_progressive_ac_high_bits);
+-        } else {
+-          self->private_impl.choosy_decode_mcu = (
+-              &wuffs_jpeg__decoder__decode_mcu_progressive_ac_low_bit);
+-        }
+-      }
+-    }
+-    v_i = 0u;
+-    while (v_i < self->private_impl.f_scan_num_components) {
+-      if ((self->private_impl.f_scan_ss == 0u) &&  ! self->private_impl.f_seen_dht[(0u | self->private_impl.f_scan_comps_td[v_i])]) {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
+-        status = wuffs_jpeg__decoder__use_default_huffman_table(self, (0u | self->private_impl.f_scan_comps_td[v_i]));
+-        if (status.repr) {
+-          goto suspend;
+-        }
+-      }
+-      if ((self->private_impl.f_scan_se != 0u) &&  ! self->private_impl.f_seen_dht[(4u | self->private_impl.f_scan_comps_ta[v_i])]) {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
+-        status = wuffs_jpeg__decoder__use_default_huffman_table(self, (4u | self->private_impl.f_scan_comps_ta[v_i]));
+-        if (status.repr) {
+-          goto suspend;
+-        }
+-      }
+-      v_j = ((uint32_t)(self->private_impl.f_scan_ss));
+-      v_j_max_incl = ((uint32_t)(wuffs_base__u8__min(self->private_impl.f_scan_se, 9u)));
+-      while (v_j <= v_j_max_incl) {
+-        self->private_impl.f_block_smoothing_lowest_scan_al[self->private_impl.f_scan_comps_cselector[v_i]][v_j] = self->private_impl.f_scan_al;
+-        v_j += 1u;
+-      }
+-      v_i += 1u;
+-    }
+-    if (self->private_impl.f_scan_num_components == 1u) {
+-      wuffs_jpeg__decoder__calculate_single_component_scan_fields(self);
+-    } else {
+-      v_failed = wuffs_jpeg__decoder__calculate_multiple_component_scan_fields(self);
+-      if (v_failed) {
+-        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
+-        goto exit;
+-      }
+-    }
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src);
+ 
+-    goto ok;
+-    ok:
+-    self->private_impl.p_prepare_scan[0] = 0;
+-    goto exit;
+-  }
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_jpeg__decoder__do_decode_frame(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts);
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_prepare_scan[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_prepare_scan[0].v_i = v_i;
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_jpeg__decoder__decode_dht(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__io_buffer* a_src);
+ 
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
++WUFFS_BASE__GENERATED_C_CODE
++static bool
++wuffs_jpeg__decoder__calculate_huff_tables(
++    wuffs_jpeg__decoder* self,
++    uint8_t a_tc4_th,
++    uint32_t a_total_count);
+ 
+-  return status;
+-}
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_jpeg__decoder__decode_sos(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf);
+ 
+-// -------- func jpeg.decoder.use_default_huffman_table
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_jpeg__decoder__prepare_scan(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__io_buffer* a_src);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+ wuffs_jpeg__decoder__use_default_huffman_table(
+     wuffs_jpeg__decoder* self,
+-    uint8_t a_tc4_th) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  wuffs_base__slice_u8 v_data = {0};
+-  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
+-  wuffs_base__io_buffer* v_r = &u_r;
+-  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-
+-  if (a_tc4_th == 0u) {
+-    v_data = wuffs_base__make_slice_u8(wuffs_base__strip_const_from_u8_ptr(WUFFS_JPEG__DEFAULT_HUFF_TABLE_DC_LUMA), 29);
+-  } else if (a_tc4_th == 1u) {
+-    v_data = wuffs_base__make_slice_u8(wuffs_base__strip_const_from_u8_ptr(WUFFS_JPEG__DEFAULT_HUFF_TABLE_DC_CHROMA), 29);
+-  } else if (a_tc4_th == 4u) {
+-    v_data = wuffs_base__make_slice_u8(wuffs_base__strip_const_from_u8_ptr(WUFFS_JPEG__DEFAULT_HUFF_TABLE_AC_LUMA), 179);
+-  } else if (a_tc4_th == 5u) {
+-    v_data = wuffs_base__make_slice_u8(wuffs_base__strip_const_from_u8_ptr(WUFFS_JPEG__DEFAULT_HUFF_TABLE_AC_CHROMA), 179);
+-  } else {
+-    status = wuffs_base__make_status(wuffs_jpeg__error__missing_huffman_table);
+-    goto exit;
+-  }
+-  {
+-    wuffs_base__io_buffer* o_0_v_r = v_r;
+-    const uint8_t *o_0_iop_v_r = iop_v_r;
+-    const uint8_t *o_0_io0_v_r = io0_v_r;
+-    const uint8_t *o_0_io1_v_r = io1_v_r;
+-    const uint8_t *o_0_io2_v_r = io2_v_r;
+-    v_r = wuffs_base__io_reader__set(
+-        &u_r,
+-        &iop_v_r,
+-        &io0_v_r,
+-        &io1_v_r,
+-        &io2_v_r,
+-        v_data,
+-        0u);
+-    self->private_impl.f_payload_length = ((uint32_t)((((uint64_t)(v_data.len)) & 65535u)));
+-    {
+-      wuffs_base__status t_0 = wuffs_jpeg__decoder__decode_dht(self, v_r);
+-      v_status = t_0;
+-    }
+-    v_r = o_0_v_r;
+-    iop_v_r = o_0_iop_v_r;
+-    io0_v_r = o_0_io0_v_r;
+-    io1_v_r = o_0_io1_v_r;
+-    io2_v_r = o_0_io2_v_r;
+-  }
+-  status = v_status;
+-  if (wuffs_base__status__is_error(&status)) {
+-    goto exit;
+-  } else if (wuffs_base__status__is_suspension(&status)) {
+-    status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
+-    goto exit;
+-  }
+-  goto ok;
+-
+-  ok:
+-  goto exit;
+-  exit:
+-  return status;
+-}
+-
+-// -------- func jpeg.decoder.calculate_single_component_scan_fields
++    uint8_t a_tc4_th);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__empty_struct
+ wuffs_jpeg__decoder__calculate_single_component_scan_fields(
+-    wuffs_jpeg__decoder* self) {
+-  uint8_t v_csel = 0;
+-
+-  self->private_impl.f_scan_comps_bx_offset[0u] = 0u;
+-  self->private_impl.f_scan_comps_by_offset[0u] = 0u;
+-  self->private_impl.f_mcu_num_blocks = 1u;
+-  self->private_impl.f_mcu_blocks_sselector[0u] = 0u;
+-  v_csel = self->private_impl.f_scan_comps_cselector[0u];
+-  self->private_impl.f_mcu_blocks_offset[0u] = self->private_impl.f_components_workbuf_offsets[v_csel];
+-  self->private_impl.f_mcu_blocks_mx_mul[0u] = 8u;
+-  self->private_impl.f_mcu_blocks_my_mul[0u] = (8u * self->private_impl.f_components_workbuf_widths[v_csel]);
+-  self->private_impl.f_mcu_blocks_dc_hselector[0u] = (0u | self->private_impl.f_scan_comps_td[0u]);
+-  self->private_impl.f_mcu_blocks_ac_hselector[0u] = (4u | self->private_impl.f_scan_comps_ta[0u]);
+-  self->private_impl.f_scan_width_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_width, self->private_impl.f_components_h[v_csel], self->private_impl.f_max_incl_components_h);
+-  self->private_impl.f_scan_height_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_height, self->private_impl.f_components_v[v_csel], self->private_impl.f_max_incl_components_v);
+-  return wuffs_base__make_empty_struct();
+-}
+-
+-// -------- func jpeg.decoder.calculate_multiple_component_scan_fields
++    wuffs_jpeg__decoder* self);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static bool
+ wuffs_jpeg__decoder__calculate_multiple_component_scan_fields(
+-    wuffs_jpeg__decoder* self) {
+-  uint32_t v_i = 0;
+-  uint32_t v_h = 0;
+-  uint32_t v_v = 0;
+-  uint32_t v_hv = 0;
+-  uint32_t v_total_hv = 0;
+-  uint32_t v_b = 0;
+-  uint32_t v_bx_offset = 0;
+-  uint32_t v_by_offset = 0;
+-  uint8_t v_ssel = 0;
+-  uint8_t v_csel = 0;
+-
+-  v_total_hv = 0u;
+-  v_i = 0u;
+-  v_b = 0u;
+-  v_bx_offset = 0u;
+-  v_by_offset = 0u;
+-  while (v_i < self->private_impl.f_scan_num_components) {
+-    v_h = ((uint32_t)(self->private_impl.f_components_h[self->private_impl.f_scan_comps_cselector[v_i]]));
+-    v_v = ((uint32_t)(self->private_impl.f_components_v[self->private_impl.f_scan_comps_cselector[v_i]]));
+-    v_hv = (((uint32_t)(self->private_impl.f_components_h[self->private_impl.f_scan_comps_cselector[v_i]])) * ((uint32_t)(self->private_impl.f_components_v[self->private_impl.f_scan_comps_cselector[v_i]])));
+-    v_total_hv += v_hv;
+-    while (v_hv > 0u) {
+-      self->private_impl.f_scan_comps_bx_offset[(v_b & 15u)] = ((uint8_t)((v_bx_offset & 3u)));
+-      self->private_impl.f_scan_comps_by_offset[(v_b & 15u)] = ((uint8_t)((v_by_offset & 3u)));
+-      self->private_impl.f_mcu_blocks_sselector[(v_b & 15u)] = ((uint8_t)(v_i));
+-      v_b += 1u;
+-      v_bx_offset += 1u;
+-      if (v_bx_offset == v_h) {
+-        v_bx_offset = 0u;
+-        v_by_offset += 1u;
+-        if (v_by_offset == v_v) {
+-          v_by_offset = 0u;
+-        }
+-      }
+-      v_hv -= 1u;
+-    }
+-    v_i += 1u;
+-  }
+-  if (v_total_hv > 10u) {
+-    return true;
+-  }
+-  self->private_impl.f_mcu_num_blocks = v_total_hv;
+-  v_b = 0u;
+-  while (v_b < self->private_impl.f_mcu_num_blocks) {
+-    v_ssel = self->private_impl.f_mcu_blocks_sselector[v_b];
+-    v_csel = self->private_impl.f_scan_comps_cselector[v_ssel];
+-    self->private_impl.f_mcu_blocks_offset[v_b] = (self->private_impl.f_components_workbuf_offsets[v_csel] + (8u * ((uint64_t)(self->private_impl.f_scan_comps_bx_offset[v_b]))) + (8u * ((uint64_t)(self->private_impl.f_scan_comps_by_offset[v_b])) * ((uint64_t)(self->private_impl.f_components_workbuf_widths[v_csel]))));
+-    self->private_impl.f_mcu_blocks_mx_mul[v_b] = (8u * ((uint32_t)(self->private_impl.f_components_h[v_csel])));
+-    self->private_impl.f_mcu_blocks_my_mul[v_b] = (8u * ((uint32_t)(self->private_impl.f_components_v[v_csel])) * self->private_impl.f_components_workbuf_widths[v_csel]);
+-    self->private_impl.f_mcu_blocks_dc_hselector[v_b] = (0u | self->private_impl.f_scan_comps_td[v_ssel]);
+-    self->private_impl.f_mcu_blocks_ac_hselector[v_b] = (4u | self->private_impl.f_scan_comps_ta[v_ssel]);
+-    v_b += 1u;
+-  }
+-  self->private_impl.f_scan_width_in_mcus = self->private_impl.f_width_in_mcus;
+-  self->private_impl.f_scan_height_in_mcus = self->private_impl.f_height_in_mcus;
+-  return false;
+-}
+-
+-// -------- func jpeg.decoder.fill_bitstream
++    wuffs_jpeg__decoder* self);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__empty_struct
+ wuffs_jpeg__decoder__fill_bitstream(
+     wuffs_jpeg__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
+-  uint32_t v_wi = 0;
+-  uint8_t v_c = 0;
+-  uint32_t v_new_wi = 0;
+-
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
+-
+-  if (self->private_impl.f_bitstream_ri <= 0u) {
+-  } else if (self->private_impl.f_bitstream_ri >= self->private_impl.f_bitstream_wi) {
+-    self->private_impl.f_bitstream_ri = 0u;
+-    self->private_impl.f_bitstream_wi = 0u;
+-  } else {
+-    v_wi = (self->private_impl.f_bitstream_wi - self->private_impl.f_bitstream_ri);
+-    wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_bitstream_buffer, 2048), wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
+-        self->private_impl.f_bitstream_ri,
+-        self->private_impl.f_bitstream_wi));
+-    self->private_impl.f_bitstream_ri = 0u;
+-    self->private_impl.f_bitstream_wi = v_wi;
+-  }
+-  v_wi = self->private_impl.f_bitstream_wi;
+-  while ((v_wi < 2048u) && (((uint64_t)(io2_a_src - iop_a_src)) > 0u)) {
+-    v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-    if (v_c < 255u) {
+-      self->private_data.f_bitstream_buffer[v_wi] = v_c;
+-      v_wi += 1u;
+-      iop_a_src += 1u;
+-      continue;
+-    } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 1u) {
+-      break;
+-    } else if ((wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8u) > 0u) {
+-      break;
+-    } else {
+-      self->private_data.f_bitstream_buffer[v_wi] = 255u;
+-      v_wi += 1u;
+-      iop_a_src += 2u;
+-    }
+-  }
+-  if (((uint64_t)(io2_a_src - iop_a_src)) > 1u) {
+-    if ((wuffs_base__peek_u8be__no_bounds_check(iop_a_src) >= 255u) && ((wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8u) > 0u)) {
+-      v_new_wi = (wuffs_base__u32__min(v_wi, 1784u) + 264u);
+-      v_new_wi = wuffs_base__u32__min(v_new_wi, (v_wi + self->private_impl.f_bitstream_padding));
+-      if (v_wi < v_new_wi) {
+-        wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_bitstream_padding, (v_new_wi - v_wi));
+-        wuffs_base__bulk_memset(&self->private_data.f_bitstream_buffer[v_wi], (v_new_wi - v_wi), 0u);
+-        v_wi = v_new_wi;
+-      }
+-    }
+-  }
+-  self->private_impl.f_bitstream_wi = v_wi;
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
+-
+-  return wuffs_base__make_empty_struct();
+-}
+-
+-// -------- func jpeg.decoder.load_mcu_blocks_for_single_component
++    wuffs_base__io_buffer* a_src);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__empty_struct
+@@ -44752,9 +44689,7 @@ wuffs_jpeg__decoder__load_mcu_blocks_for_single_component(
+     uint32_t a_mx,
+     uint32_t a_my,
+     wuffs_base__slice_u8 a_workbuf,
+-    uint32_t a_csel) {
+-  return (*self->private_impl.choosy_load_mcu_blocks_for_single_component)(self, a_mx, a_my, a_workbuf, a_csel);
+-}
++    uint32_t a_csel);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__empty_struct
+@@ -44763,19 +44698,7 @@ wuffs_jpeg__decoder__load_mcu_blocks_for_single_component__choosy_default(
+     uint32_t a_mx,
+     uint32_t a_my,
+     wuffs_base__slice_u8 a_workbuf,
+-    uint32_t a_csel) {
+-  uint64_t v_stride16 = 0;
+-  uint64_t v_offset = 0;
+-
+-  v_stride16 = ((uint64_t)((self->private_impl.f_components_workbuf_widths[a_csel] * 16u)));
+-  v_offset = (self->private_impl.f_components_workbuf_offsets[(a_csel | 4u)] + (((uint64_t)(a_mx)) * 128u) + (((uint64_t)(a_my)) * v_stride16));
+-  if (v_offset <= ((uint64_t)(a_workbuf.len))) {
+-    wuffs_base__bulk_load_host_endian(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset));
+-  }
+-  return wuffs_base__make_empty_struct();
+-}
+-
+-// -------- func jpeg.decoder.load_mcu_blocks
++    uint32_t a_csel);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__empty_struct
+@@ -44783,34 +44706,7 @@ wuffs_jpeg__decoder__load_mcu_blocks(
+     wuffs_jpeg__decoder* self,
+     uint32_t a_mx,
+     uint32_t a_my,
+-    wuffs_base__slice_u8 a_workbuf) {
+-  uint32_t v_b = 0;
+-  uint8_t v_csel = 0;
+-  uint64_t v_h = 0;
+-  uint64_t v_v = 0;
+-  uint64_t v_stride16 = 0;
+-  uint64_t v_offset = 0;
+-
+-  v_h = 1u;
+-  v_v = 1u;
+-  v_b = 0u;
+-  while (v_b < self->private_impl.f_mcu_num_blocks) {
+-    v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[v_b]];
+-    if (self->private_impl.f_scan_num_components > 1u) {
+-      v_h = ((uint64_t)(self->private_impl.f_components_h[v_csel]));
+-      v_v = ((uint64_t)(self->private_impl.f_components_v[v_csel]));
+-    }
+-    v_stride16 = ((uint64_t)((self->private_impl.f_components_workbuf_widths[v_csel] * 16u)));
+-    v_offset = (self->private_impl.f_components_workbuf_offsets[(v_csel | 4u)] + (((v_h * ((uint64_t)(a_mx))) + ((uint64_t)(self->private_impl.f_scan_comps_bx_offset[v_b]))) * 128u) + (((v_v * ((uint64_t)(a_my))) + ((uint64_t)(self->private_impl.f_scan_comps_by_offset[v_b]))) * v_stride16));
+-    if (v_offset <= ((uint64_t)(a_workbuf.len))) {
+-      wuffs_base__bulk_load_host_endian(&self->private_data.f_mcu_blocks[v_b], 1u * (size_t)128u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset));
+-    }
+-    v_b += 1u;
+-  }
+-  return wuffs_base__make_empty_struct();
+-}
+-
+-// -------- func jpeg.decoder.save_mcu_blocks
++    wuffs_base__slice_u8 a_workbuf);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__empty_struct
+@@ -44818,4983 +44714,17911 @@ wuffs_jpeg__decoder__save_mcu_blocks(
+     wuffs_jpeg__decoder* self,
+     uint32_t a_mx,
+     uint32_t a_my,
+-    wuffs_base__slice_u8 a_workbuf) {
+-  uint32_t v_b = 0;
+-  uint8_t v_csel = 0;
+-  uint64_t v_h = 0;
+-  uint64_t v_v = 0;
+-  uint64_t v_stride16 = 0;
+-  uint64_t v_offset = 0;
+-
+-  v_h = 1u;
+-  v_v = 1u;
+-  v_b = 0u;
+-  while (v_b < self->private_impl.f_mcu_num_blocks) {
+-    v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[v_b]];
+-    if (self->private_impl.f_scan_num_components > 1u) {
+-      v_h = ((uint64_t)(self->private_impl.f_components_h[v_csel]));
+-      v_v = ((uint64_t)(self->private_impl.f_components_v[v_csel]));
+-    }
+-    v_stride16 = ((uint64_t)((self->private_impl.f_components_workbuf_widths[v_csel] * 16u)));
+-    v_offset = (self->private_impl.f_components_workbuf_offsets[(v_csel | 4u)] + (((v_h * ((uint64_t)(a_mx))) + ((uint64_t)(self->private_impl.f_scan_comps_bx_offset[v_b]))) * 128u) + (((v_v * ((uint64_t)(a_my))) + ((uint64_t)(self->private_impl.f_scan_comps_by_offset[v_b]))) * v_stride16));
+-    if (v_offset <= ((uint64_t)(a_workbuf.len))) {
+-      wuffs_base__bulk_save_host_endian(&self->private_data.f_mcu_blocks[v_b], 1u * (size_t)128u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset));
+-    }
+-    v_b += 1u;
+-  }
+-  return wuffs_base__make_empty_struct();
+-}
+-
+-// -------- func jpeg.decoder.skip_past_the_next_restart_marker
++    wuffs_base__slice_u8 a_workbuf);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+ wuffs_jpeg__decoder__skip_past_the_next_restart_marker(
+     wuffs_jpeg__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  uint8_t v_c = 0;
+-
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
+-
+-  uint32_t coro_susp_point = self->private_impl.p_skip_past_the_next_restart_marker[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    while (true) {
+-      if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+-        continue;
+-      } else if (wuffs_base__peek_u8be__no_bounds_check(iop_a_src) < 255u) {
+-        iop_a_src += 1u;
+-        continue;
+-      }
+-      v_c = ((uint8_t)((wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8u)));
+-      if (v_c < 192u) {
+-        iop_a_src += 2u;
+-        continue;
+-      } else if ((v_c < 208u) || (215u < v_c)) {
+-        break;
+-      }
+-      v_c &= 7u;
+-      if ((self->private_impl.f_next_restart_marker == ((v_c + 1u) & 7u)) || (self->private_impl.f_next_restart_marker == ((v_c + 2u) & 7u))) {
+-        break;
+-      } else if ((self->private_impl.f_next_restart_marker == ((v_c + 7u) & 7u)) || (self->private_impl.f_next_restart_marker == ((v_c + 6u) & 7u))) {
+-        iop_a_src += 2u;
+-        continue;
+-      } else {
+-        iop_a_src += 2u;
+-        break;
+-      }
+-    }
+-    self->private_impl.f_next_restart_marker = (((uint8_t)(self->private_impl.f_next_restart_marker + 1u)) & 7u);
+-
+-    ok:
+-    self->private_impl.p_skip_past_the_next_restart_marker[0] = 0;
+-    goto exit;
+-  }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_skip_past_the_next_restart_marker[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
+-
+-  return status;
+-}
+-
+-// -------- func jpeg.decoder.apply_progressive_idct
++    wuffs_base__io_buffer* a_src);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__empty_struct
+ wuffs_jpeg__decoder__apply_progressive_idct(
+     wuffs_jpeg__decoder* self,
+-    wuffs_base__slice_u8 a_workbuf) {
+-  uint32_t v_csel = 0;
+-  bool v_block_smoothing_applicable = false;
+-  uint32_t v_scan_width_in_mcus = 0;
+-  uint32_t v_scan_height_in_mcus = 0;
+-  uint32_t v_mcu_blocks_mx_mul_0 = 0;
+-  uint32_t v_mcu_blocks_my_mul_0 = 0;
+-  uint32_t v_my = 0;
+-  uint32_t v_mx = 0;
+-  uint64_t v_stride = 0;
+-  uint64_t v_offset = 0;
+-  uint8_t v_stashed_mcu_blocks_0[128] = {0};
+-
+-  wuffs_base__bulk_save_host_endian(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, wuffs_base__make_slice_u8(v_stashed_mcu_blocks_0, 128));
+-  v_block_smoothing_applicable = true;
+-  v_csel = 0u;
+-  while (v_csel < self->private_impl.f_num_components) {
+-    if ((self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][0u] >= 16u) || wuffs_jpeg__decoder__top_left_quants_has_zero(self, ((uint32_t)(self->private_impl.f_components_tq[v_csel])))) {
+-      v_block_smoothing_applicable = false;
+-    }
+-    v_csel += 1u;
+-  }
+-  v_csel = 0u;
+-  while (v_csel < self->private_impl.f_num_components) {
+-    v_scan_width_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_width, self->private_impl.f_components_h[v_csel], self->private_impl.f_max_incl_components_h);
+-    v_scan_height_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_height, self->private_impl.f_components_v[v_csel], self->private_impl.f_max_incl_components_v);
+-    v_mcu_blocks_mx_mul_0 = 8u;
+-    v_mcu_blocks_my_mul_0 = (8u * self->private_impl.f_components_workbuf_widths[v_csel]);
+-    if (v_block_smoothing_applicable && (0u != (self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][1u] |
+-        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][2u] |
+-        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][3u] |
+-        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][4u] |
+-        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][5u] |
+-        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][6u] |
+-        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][8u] |
+-        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][8u] |
+-        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][9u]))) {
+-      self->private_impl.choosy_load_mcu_blocks_for_single_component = (
+-          &wuffs_jpeg__decoder__load_mcu_blocks_for_single_component_smooth);
+-      self->private_impl.f_block_smoothing_mx_max_incl = wuffs_base__u32__sat_sub(v_scan_width_in_mcus, 1u);
+-      self->private_impl.f_block_smoothing_my_max_incl = wuffs_base__u32__sat_sub(v_scan_height_in_mcus, 1u);
+-    } else {
+-      self->private_impl.choosy_load_mcu_blocks_for_single_component = (
+-          &wuffs_jpeg__decoder__load_mcu_blocks_for_single_component__choosy_default);
+-    }
+-    v_my = 0u;
+-    while (v_my < v_scan_height_in_mcus) {
+-      v_mx = 0u;
+-      while (v_mx < v_scan_width_in_mcus) {
+-        wuffs_jpeg__decoder__load_mcu_blocks_for_single_component(self,
+-            v_mx,
+-            v_my,
+-            a_workbuf,
+-            v_csel);
+-        v_stride = ((uint64_t)(self->private_impl.f_components_workbuf_widths[v_csel]));
+-        v_offset = (self->private_impl.f_components_workbuf_offsets[v_csel] + (((uint64_t)(v_mcu_blocks_mx_mul_0)) * ((uint64_t)(v_mx))) + (((uint64_t)(v_mcu_blocks_my_mul_0)) * ((uint64_t)(v_my))));
+-        if (v_offset <= ((uint64_t)(a_workbuf.len))) {
+-          wuffs_jpeg__decoder__decode_idct(self, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset), v_stride, ((uint32_t)(self->private_impl.f_components_tq[v_csel])));
+-        }
+-        v_mx += 1u;
+-      }
+-      v_my += 1u;
+-    }
+-    v_csel += 1u;
+-  }
+-  wuffs_base__bulk_load_host_endian(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, wuffs_base__make_slice_u8(v_stashed_mcu_blocks_0, 128));
+-  return wuffs_base__make_empty_struct();
+-}
+-
+-// -------- func jpeg.decoder.swizzle_gray
++    wuffs_base__slice_u8 a_workbuf);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+ wuffs_jpeg__decoder__swizzle_gray(
+     wuffs_jpeg__decoder* self,
+     wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__slice_u8 a_workbuf) {
+-  wuffs_base__pixel_format v_dst_pixfmt = {0};
+-  uint32_t v_dst_bits_per_pixel = 0;
+-  uint32_t v_dst_bytes_per_pixel = 0;
+-  uint64_t v_dst_length = 0;
+-  wuffs_base__table_u8 v_tab = {0};
+-  wuffs_base__slice_u8 v_dst = {0};
+-  uint32_t v_y = 0;
+-  uint64_t v_stride = 0;
+-
+-  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
+-  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
+-  if ((v_dst_bits_per_pixel & 7u) != 0u) {
+-    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
+-  }
+-  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
+-  v_dst_length = ((uint64_t)((v_dst_bytes_per_pixel * self->private_impl.f_width)));
+-  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
+-  v_y = 0u;
+-  while (v_y < self->private_impl.f_height) {
+-    v_dst = wuffs_base__table_u8__row_u32(v_tab, v_y);
+-    if (v_dst_length < ((uint64_t)(v_dst.len))) {
+-      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_length);
+-    }
+-    wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)), a_workbuf);
+-    v_stride = ((uint64_t)(self->private_impl.f_components_workbuf_widths[0u]));
+-    if (v_stride <= ((uint64_t)(a_workbuf.len))) {
+-      a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, v_stride);
+-    } else {
+-      a_workbuf = wuffs_base__utility__empty_slice_u8();
+-    }
+-    v_y += 1u;
+-  }
+-  return wuffs_base__make_status(NULL);
+-}
+-
+-// -------- func jpeg.decoder.swizzle_colorful
++    wuffs_base__slice_u8 a_workbuf,
++    uint32_t a_x0,
++    uint32_t a_x1,
++    uint32_t a_y0,
++    uint32_t a_y1,
++    uint64_t a_stride);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+ wuffs_jpeg__decoder__swizzle_colorful(
+     wuffs_jpeg__decoder* self,
+     wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__slice_u8 a_workbuf) {
+-  wuffs_base__slice_u8 v_src0 = {0};
+-  wuffs_base__slice_u8 v_src1 = {0};
+-  wuffs_base__slice_u8 v_src2 = {0};
+-  wuffs_base__slice_u8 v_src3 = {0};
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-
+-  if ((self->private_impl.f_components_workbuf_offsets[0u] <= self->private_impl.f_components_workbuf_offsets[1u]) && (self->private_impl.f_components_workbuf_offsets[1u] <= ((uint64_t)(a_workbuf.len)))) {
+-    v_src0 = wuffs_base__slice_u8__subslice_ij(a_workbuf,
+-        self->private_impl.f_components_workbuf_offsets[0u],
+-        self->private_impl.f_components_workbuf_offsets[1u]);
+-  }
+-  if ((self->private_impl.f_components_workbuf_offsets[1u] <= self->private_impl.f_components_workbuf_offsets[2u]) && (self->private_impl.f_components_workbuf_offsets[2u] <= ((uint64_t)(a_workbuf.len)))) {
+-    v_src1 = wuffs_base__slice_u8__subslice_ij(a_workbuf,
+-        self->private_impl.f_components_workbuf_offsets[1u],
+-        self->private_impl.f_components_workbuf_offsets[2u]);
+-  }
+-  if ((self->private_impl.f_components_workbuf_offsets[2u] <= self->private_impl.f_components_workbuf_offsets[3u]) && (self->private_impl.f_components_workbuf_offsets[3u] <= ((uint64_t)(a_workbuf.len)))) {
+-    v_src2 = wuffs_base__slice_u8__subslice_ij(a_workbuf,
+-        self->private_impl.f_components_workbuf_offsets[2u],
+-        self->private_impl.f_components_workbuf_offsets[3u]);
+-  }
+-  if ((self->private_impl.f_components_workbuf_offsets[3u] <= self->private_impl.f_components_workbuf_offsets[4u]) && (self->private_impl.f_components_workbuf_offsets[4u] <= ((uint64_t)(a_workbuf.len)))) {
+-    v_src3 = wuffs_base__slice_u8__subslice_ij(a_workbuf,
+-        self->private_impl.f_components_workbuf_offsets[3u],
+-        self->private_impl.f_components_workbuf_offsets[4u]);
+-  }
+-  v_status = wuffs_base__pixel_swizzler__swizzle_ycck(&self->private_impl.f_swizzler,
+-      a_dst,
+-      wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
+-      self->private_impl.f_width,
+-      self->private_impl.f_height,
+-      v_src0,
+-      v_src1,
+-      v_src2,
+-      v_src3,
+-      self->private_impl.f_components_workbuf_widths[0u],
+-      self->private_impl.f_components_workbuf_widths[1u],
+-      self->private_impl.f_components_workbuf_widths[2u],
+-      self->private_impl.f_components_workbuf_widths[3u],
+-      self->private_impl.f_components_workbuf_heights[0u],
+-      self->private_impl.f_components_workbuf_heights[1u],
+-      self->private_impl.f_components_workbuf_heights[2u],
+-      self->private_impl.f_components_workbuf_heights[3u],
+-      self->private_impl.f_components_workbuf_widths[0u],
+-      self->private_impl.f_components_workbuf_widths[1u],
+-      self->private_impl.f_components_workbuf_widths[2u],
+-      self->private_impl.f_components_workbuf_widths[3u],
+-      self->private_impl.f_components_h[0u],
+-      self->private_impl.f_components_h[1u],
+-      self->private_impl.f_components_h[2u],
+-      self->private_impl.f_components_h[3u],
+-      self->private_impl.f_components_v[0u],
+-      self->private_impl.f_components_v[1u],
+-      self->private_impl.f_components_v[2u],
+-      self->private_impl.f_components_v[3u],
+-      self->private_impl.f_is_rgb_or_cmyk,
+-      true,
+-      wuffs_base__make_slice_u8(self->private_data.f_swizzle_ycck_scratch_buffer_2k, 2048));
+-  return wuffs_base__status__ensure_not_a_suspension(v_status);
+-}
+-
+-// -------- func jpeg.decoder.frame_dirty_rect
++    wuffs_base__slice_u8 a_workbuf,
++    uint32_t a_x0,
++    uint32_t a_x1,
++    uint32_t a_y0,
++    uint32_t a_y1);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
+-wuffs_jpeg__decoder__frame_dirty_rect(
+-    const wuffs_jpeg__decoder* self) {
+-  if (!self) {
+-    return wuffs_base__utility__empty_rect_ie_u32();
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_rect_ie_u32();
+-  }
+-
+-  return wuffs_base__utility__make_rect_ie_u32(
+-      0u,
+-      0u,
+-      self->private_impl.f_width,
+-      self->private_impl.f_height);
+-}
+-
+-// -------- func jpeg.decoder.num_animation_loops
++static bool
++wuffs_jpeg__decoder__top_left_quants_has_zero(
++    const wuffs_jpeg__decoder* self,
++    uint32_t a_q);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_jpeg__decoder__num_animation_loops(
+-    const wuffs_jpeg__decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
+-
+-  return 0u;
+-}
+-
+-// -------- func jpeg.decoder.num_decoded_frame_configs
++static wuffs_base__empty_struct
++wuffs_jpeg__decoder__load_mcu_blocks_for_single_component_smooth(
++    wuffs_jpeg__decoder* self,
++    uint32_t a_mx,
++    uint32_t a_my,
++    wuffs_base__slice_u8 a_workbuf,
++    uint32_t a_csel);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_jpeg__decoder__num_decoded_frame_configs(
+-    const wuffs_jpeg__decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
+-
+-  if (self->private_impl.f_call_sequence > 32u) {
+-    return 1u;
+-  }
+-  return 0u;
+-}
+-
+-// -------- func jpeg.decoder.num_decoded_frames
++static uint32_t
++wuffs_jpeg__decoder__decode_mcu(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__slice_u8 a_workbuf,
++    uint32_t a_mx,
++    uint32_t a_my);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_jpeg__decoder__num_decoded_frames(
+-    const wuffs_jpeg__decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
+-
+-  if (self->private_impl.f_call_sequence > 64u) {
+-    return 1u;
+-  }
+-  return 0u;
+-}
+-
+-// -------- func jpeg.decoder.restart_frame
++static uint32_t
++wuffs_jpeg__decoder__decode_mcu__choosy_default(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__slice_u8 a_workbuf,
++    uint32_t a_mx,
++    uint32_t a_my);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_jpeg__decoder__restart_frame(
++static uint32_t
++wuffs_jpeg__decoder__decode_mcu_progressive_ac_high_bits(
+     wuffs_jpeg__decoder* self,
+-    uint64_t a_index,
+-    uint64_t a_io_position) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-
+-  uint32_t v_i = 0;
+-  uint32_t v_j = 0;
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__slice_u8 a_workbuf,
++    uint32_t a_mx,
++    uint32_t a_my);
+ 
+-  if (self->private_impl.f_call_sequence < 32u) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
+-  }
+-  if (a_index != 0u) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  self->private_impl.f_call_sequence = 40u;
+-  self->private_impl.f_bitstream_is_closed = false;
+-  self->private_impl.f_frame_config_io_position = a_io_position;
+-  self->private_impl.f_scan_count = 0u;
+-  self->private_impl.f_restart_interval = self->private_impl.f_saved_restart_interval;
+-  v_i = 0u;
+-  while (v_i < 4u) {
+-    self->private_impl.f_seen_dqt[v_i] = self->private_impl.f_saved_seen_dqt[v_i];
+-    v_j = 0u;
+-    while (v_j < 64u) {
+-      self->private_impl.f_quant_tables[v_i][v_j] = self->private_impl.f_saved_quant_tables[v_i][v_j];
+-      v_j += 1u;
+-    }
+-    v_i += 1u;
+-  }
+-  v_i = 0u;
+-  while (v_i < 4u) {
+-    v_j = 0u;
+-    while (v_j < 10u) {
+-      self->private_impl.f_block_smoothing_lowest_scan_al[v_i][v_j] = 16u;
+-      v_j += 1u;
+-    }
+-    v_i += 1u;
+-  }
+-  v_i = 0u;
+-  while (v_i < 8u) {
+-    self->private_impl.f_seen_dht[v_i] = false;
+-    v_i += 1u;
+-  }
+-  return wuffs_base__make_status(NULL);
+-}
++WUFFS_BASE__GENERATED_C_CODE
++static uint32_t
++wuffs_jpeg__decoder__decode_mcu_progressive_ac_low_bit(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__slice_u8 a_workbuf,
++    uint32_t a_mx,
++    uint32_t a_my);
+ 
+-// -------- func jpeg.decoder.set_report_metadata
++WUFFS_BASE__GENERATED_C_CODE
++static uint32_t
++wuffs_jpeg__decoder__decode_mcu_progressive_dc_high_bits(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__slice_u8 a_workbuf,
++    uint32_t a_mx,
++    uint32_t a_my);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_jpeg__decoder__set_report_metadata(
++static uint32_t
++wuffs_jpeg__decoder__decode_mcu_progressive_dc_low_bit(
+     wuffs_jpeg__decoder* self,
+-    uint32_t a_fourcc,
+-    bool a_report) {
+-  return wuffs_base__make_empty_struct();
+-}
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__slice_u8 a_workbuf,
++    uint32_t a_mx,
++    uint32_t a_my);
+ 
+-// -------- func jpeg.decoder.tell_me_more
++// ---------------- VTables
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_jpeg__decoder__tell_me_more(
++const wuffs_base__image_decoder__func_ptrs
++wuffs_jpeg__decoder__func_ptrs_for__wuffs_base__image_decoder = {
++  (wuffs_base__status(*)(void*,
++      wuffs_base__pixel_buffer*,
++      wuffs_base__io_buffer*,
++      wuffs_base__pixel_blend,
++      wuffs_base__slice_u8,
++      wuffs_base__decode_frame_options*))(&wuffs_jpeg__decoder__decode_frame),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__frame_config*,
++      wuffs_base__io_buffer*))(&wuffs_jpeg__decoder__decode_frame_config),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__image_config*,
++      wuffs_base__io_buffer*))(&wuffs_jpeg__decoder__decode_image_config),
++  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_jpeg__decoder__frame_dirty_rect),
++  (uint64_t(*)(const void*,
++      uint32_t))(&wuffs_jpeg__decoder__get_quirk),
++  (uint32_t(*)(const void*))(&wuffs_jpeg__decoder__num_animation_loops),
++  (uint64_t(*)(const void*))(&wuffs_jpeg__decoder__num_decoded_frame_configs),
++  (uint64_t(*)(const void*))(&wuffs_jpeg__decoder__num_decoded_frames),
++  (wuffs_base__status(*)(void*,
++      uint64_t,
++      uint64_t))(&wuffs_jpeg__decoder__restart_frame),
++  (wuffs_base__status(*)(void*,
++      uint32_t,
++      uint64_t))(&wuffs_jpeg__decoder__set_quirk),
++  (wuffs_base__empty_struct(*)(void*,
++      uint32_t,
++      bool))(&wuffs_jpeg__decoder__set_report_metadata),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__io_buffer*,
++      wuffs_base__more_information*,
++      wuffs_base__io_buffer*))(&wuffs_jpeg__decoder__tell_me_more),
++  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_jpeg__decoder__workbuf_len),
++};
++
++// ---------------- Initializer Implementations
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_jpeg__decoder__initialize(
+     wuffs_jpeg__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__more_information* a_minfo,
+-    wuffs_base__io_buffer* a_src) {
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options){
+   if (!self) {
+     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
++  if (sizeof(*self) != sizeof_star_self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
+   }
+-  if (!a_dst || !a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
++      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
+   }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 4)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++
++  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
++    // The whole point of this if-check is to detect an uninitialized *self.
++    // We disable the warning on GCC. Clang-5.0 does not have this warning.
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++#endif
++    if (self->private_impl.magic != 0) {
++      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++    }
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++  } else {
++    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
++      memset(self, 0, sizeof(*self));
++      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
++    } else {
++      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++    }
+   }
+-  self->private_impl.active_coroutine = 0;
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  status = wuffs_base__make_status(wuffs_base__error__no_more_information);
+-  goto exit;
++  self->private_impl.choosy_decode_idct = &wuffs_jpeg__decoder__decode_idct__choosy_default;
++  self->private_impl.choosy_load_mcu_blocks_for_single_component = &wuffs_jpeg__decoder__load_mcu_blocks_for_single_component__choosy_default;
++  self->private_impl.choosy_decode_mcu = &wuffs_jpeg__decoder__decode_mcu__choosy_default;
+ 
+-  goto ok;
+-  ok:
+-  goto exit;
+-  exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-  }
+-  return status;
++  self->private_impl.magic = WUFFS_BASE__MAGIC;
++  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
++      wuffs_base__image_decoder__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
++      (const void*)(&wuffs_jpeg__decoder__func_ptrs_for__wuffs_base__image_decoder);
++  return wuffs_base__make_status(NULL);
+ }
+ 
+-// -------- func jpeg.decoder.history_retain_length
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_jpeg__decoder__history_retain_length(
+-    const wuffs_jpeg__decoder* self) {
+-  if (!self) {
+-    return 0;
++wuffs_jpeg__decoder*
++wuffs_jpeg__decoder__alloc(void) {
++  wuffs_jpeg__decoder* x =
++      (wuffs_jpeg__decoder*)(calloc(1, sizeof(wuffs_jpeg__decoder)));
++  if (!x) {
++    return NULL;
+   }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
++  if (wuffs_jpeg__decoder__initialize(
++      x, sizeof(wuffs_jpeg__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++    free(x);
++    return NULL;
+   }
++  return x;
++}
+ 
+-  return 0u;
++size_t
++sizeof__wuffs_jpeg__decoder(void) {
++  return sizeof(wuffs_jpeg__decoder);
+ }
+ 
+-// -------- func jpeg.decoder.workbuf_len
++// ---------------- Function Implementations
++
++// -------- func jpeg.decoder.decode_idct
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_jpeg__decoder__workbuf_len(
+-    const wuffs_jpeg__decoder* self) {
+-  if (!self) {
+-    return wuffs_base__utility__empty_range_ii_u64();
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_range_ii_u64();
+-  }
+-
+-  return wuffs_base__utility__make_range_ii_u64(self->private_impl.f_components_workbuf_offsets[8u], self->private_impl.f_components_workbuf_offsets[8u]);
+-}
+-
+-// -------- func jpeg.decoder.top_left_quants_has_zero
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static bool
+-wuffs_jpeg__decoder__top_left_quants_has_zero(
+-    const wuffs_jpeg__decoder* self,
++static wuffs_base__empty_struct
++wuffs_jpeg__decoder__decode_idct(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__slice_u8 a_dst_buffer,
++    uint64_t a_dst_stride,
+     uint32_t a_q) {
+-  return ((self->private_impl.f_quant_tables[a_q][0u] == 0u) ||
+-      (self->private_impl.f_quant_tables[a_q][1u] == 0u) ||
+-      (self->private_impl.f_quant_tables[a_q][2u] == 0u) ||
+-      (self->private_impl.f_quant_tables[a_q][3u] == 0u) ||
+-      (self->private_impl.f_quant_tables[a_q][8u] == 0u) ||
+-      (self->private_impl.f_quant_tables[a_q][9u] == 0u) ||
+-      (self->private_impl.f_quant_tables[a_q][10u] == 0u) ||
+-      (self->private_impl.f_quant_tables[a_q][16u] == 0u) ||
+-      (self->private_impl.f_quant_tables[a_q][17u] == 0u) ||
+-      (self->private_impl.f_quant_tables[a_q][24u] == 0u));
++  return (*self->private_impl.choosy_decode_idct)(self, a_dst_buffer, a_dst_stride, a_q);
+ }
+ 
+-// -------- func jpeg.decoder.load_mcu_blocks_for_single_component_smooth
+-
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__empty_struct
+-wuffs_jpeg__decoder__load_mcu_blocks_for_single_component_smooth(
++wuffs_jpeg__decoder__decode_idct__choosy_default(
+     wuffs_jpeg__decoder* self,
+-    uint32_t a_mx,
+-    uint32_t a_my,
+-    wuffs_base__slice_u8 a_workbuf,
+-    uint32_t a_csel) {
+-  uint64_t v_stride16 = 0;
+-  uint64_t v_offset = 0;
+-  uint32_t v_dx = 0;
+-  uint32_t v_dy = 0;
+-  uint32_t v_mx = 0;
+-  uint32_t v_my = 0;
+-  uint8_t v_q = 0;
+-  uint32_t v_q_00 = 0;
+-  uint32_t v_q_xy = 0;
+-  uint8_t v_al = 0;
+-  uint32_t v_scratch = 0;
+-  uint32_t v_limit = 0;
++    wuffs_base__slice_u8 a_dst_buffer,
++    uint64_t a_dst_stride,
++    uint32_t a_q) {
++  uint32_t v_bq0 = 0;
++  uint32_t v_bq2 = 0;
++  uint32_t v_bq4 = 0;
++  uint32_t v_bq6 = 0;
++  uint32_t v_ca = 0;
++  uint32_t v_cb2 = 0;
++  uint32_t v_cb6 = 0;
++  uint32_t v_ccp = 0;
++  uint32_t v_ccm = 0;
++  uint32_t v_cd0 = 0;
++  uint32_t v_cd1 = 0;
++  uint32_t v_cd2 = 0;
++  uint32_t v_cd3 = 0;
++  uint32_t v_bq1 = 0;
++  uint32_t v_bq3 = 0;
++  uint32_t v_bq5 = 0;
++  uint32_t v_bq7 = 0;
++  uint32_t v_ci51 = 0;
++  uint32_t v_ci53 = 0;
++  uint32_t v_ci71 = 0;
++  uint32_t v_ci73 = 0;
++  uint32_t v_cj = 0;
++  uint32_t v_ck1 = 0;
++  uint32_t v_ck3 = 0;
++  uint32_t v_ck5 = 0;
++  uint32_t v_ck7 = 0;
++  uint32_t v_cl51 = 0;
++  uint32_t v_cl73 = 0;
++  uint32_t v_in0 = 0;
++  uint32_t v_in2 = 0;
++  uint32_t v_in4 = 0;
++  uint32_t v_in6 = 0;
++  uint32_t v_ra = 0;
++  uint32_t v_rb2 = 0;
++  uint32_t v_rb6 = 0;
++  uint32_t v_rcp = 0;
++  uint32_t v_rcm = 0;
++  uint32_t v_rd0 = 0;
++  uint32_t v_rd1 = 0;
++  uint32_t v_rd2 = 0;
++  uint32_t v_rd3 = 0;
++  uint32_t v_in1 = 0;
++  uint32_t v_in3 = 0;
++  uint32_t v_in5 = 0;
++  uint32_t v_in7 = 0;
++  uint32_t v_ri51 = 0;
++  uint32_t v_ri53 = 0;
++  uint32_t v_ri71 = 0;
++  uint32_t v_ri73 = 0;
++  uint32_t v_rj = 0;
++  uint32_t v_rk1 = 0;
++  uint32_t v_rk3 = 0;
++  uint32_t v_rk5 = 0;
++  uint32_t v_rk7 = 0;
++  uint32_t v_rl51 = 0;
++  uint32_t v_rl73 = 0;
++  uint32_t v_intermediate[64] = {0};
+ 
+-  v_stride16 = ((uint64_t)((self->private_impl.f_components_workbuf_widths[a_csel] * 16u)));
+-  v_offset = (self->private_impl.f_components_workbuf_offsets[(a_csel | 4u)] + (((uint64_t)(a_mx)) * 128u) + (((uint64_t)(a_my)) * v_stride16));
+-  if (v_offset <= ((uint64_t)(a_workbuf.len))) {
+-    wuffs_base__bulk_load_host_endian(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset));
++  if (8u > a_dst_stride) {
++    return wuffs_base__make_empty_struct();
+   }
+-  v_dy = 0u;
+-  while (v_dy < 5u) {
+-    v_my = wuffs_base__u32__min(self->private_impl.f_block_smoothing_my_max_incl, wuffs_base__u32__sat_sub((a_my + v_dy), 2u));
+-    v_dx = 0u;
+-    while (v_dx < 5u) {
+-      v_mx = wuffs_base__u32__min(self->private_impl.f_block_smoothing_mx_max_incl, wuffs_base__u32__sat_sub((a_mx + v_dx), 2u));
+-      v_offset = (self->private_impl.f_components_workbuf_offsets[(a_csel | 4u)] + (((uint64_t)(v_mx)) * 128u) + (((uint64_t)(v_my)) * v_stride16));
+-      if (v_offset <= ((uint64_t)(a_workbuf.len))) {
+-        wuffs_base__bulk_load_host_endian(&self->private_impl.f_block_smoothing_dc_values[v_dy][v_dx], 1u * (size_t)2u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset));
+-      }
+-      v_dx += 1u;
+-    }
+-    v_dy += 1u;
++  if (0u == (self->private_data.f_mcu_blocks[0u][8u] |
++      self->private_data.f_mcu_blocks[0u][16u] |
++      self->private_data.f_mcu_blocks[0u][24u] |
++      self->private_data.f_mcu_blocks[0u][32u] |
++      self->private_data.f_mcu_blocks[0u][40u] |
++      self->private_data.f_mcu_blocks[0u][48u] |
++      self->private_data.f_mcu_blocks[0u][56u])) {
++    v_intermediate[0u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][0u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][0u])))) << 2u));
++    v_intermediate[8u] = v_intermediate[0u];
++    v_intermediate[16u] = v_intermediate[0u];
++    v_intermediate[24u] = v_intermediate[0u];
++    v_intermediate[32u] = v_intermediate[0u];
++    v_intermediate[40u] = v_intermediate[0u];
++    v_intermediate[48u] = v_intermediate[0u];
++    v_intermediate[56u] = v_intermediate[0u];
++  } else {
++    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][16u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][16u]))));
++    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][48u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][48u]))));
++    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
++    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
++    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
++    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][0u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][0u]))));
++    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][32u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][32u]))));
++    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
++    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
++    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
++    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
++    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
++    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
++    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][8u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][8u]))));
++    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][24u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][24u]))));
++    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][40u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][40u]))));
++    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][56u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][56u]))));
++    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
++    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
++    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
++    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
++    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
++    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
++    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
++    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
++    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
++    v_ci51 *= 4294964100u;
++    v_ci53 *= 4294946301u;
++    v_ci71 *= 4294959923u;
++    v_ci73 *= 4294951227u;
++    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
++    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
++    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
++    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
++    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
++    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
++    v_intermediate[0u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
++    v_intermediate[56u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
++    v_intermediate[8u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
++    v_intermediate[48u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
++    v_intermediate[16u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
++    v_intermediate[40u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
++    v_intermediate[24u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
++    v_intermediate[32u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
+   }
+-  v_q = self->private_impl.f_components_tq[a_csel];
+-  v_q_00 = ((uint32_t)(self->private_impl.f_quant_tables[v_q][0u]));
+-  if (v_q_00 <= 0u) {
+-    return wuffs_base__make_empty_struct();
++  if (0u == (self->private_data.f_mcu_blocks[0u][9u] |
++      self->private_data.f_mcu_blocks[0u][17u] |
++      self->private_data.f_mcu_blocks[0u][25u] |
++      self->private_data.f_mcu_blocks[0u][33u] |
++      self->private_data.f_mcu_blocks[0u][41u] |
++      self->private_data.f_mcu_blocks[0u][49u] |
++      self->private_data.f_mcu_blocks[0u][57u])) {
++    v_intermediate[1u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][1u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][1u])))) << 2u));
++    v_intermediate[9u] = v_intermediate[1u];
++    v_intermediate[17u] = v_intermediate[1u];
++    v_intermediate[25u] = v_intermediate[1u];
++    v_intermediate[33u] = v_intermediate[1u];
++    v_intermediate[41u] = v_intermediate[1u];
++    v_intermediate[49u] = v_intermediate[1u];
++    v_intermediate[57u] = v_intermediate[1u];
++  } else {
++    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][17u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][17u]))));
++    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][49u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][49u]))));
++    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
++    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
++    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
++    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][1u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][1u]))));
++    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][33u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][33u]))));
++    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
++    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
++    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
++    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
++    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
++    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
++    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][9u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][9u]))));
++    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][25u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][25u]))));
++    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][41u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][41u]))));
++    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][57u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][57u]))));
++    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
++    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
++    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
++    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
++    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
++    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
++    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
++    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
++    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
++    v_ci51 *= 4294964100u;
++    v_ci53 *= 4294946301u;
++    v_ci71 *= 4294959923u;
++    v_ci73 *= 4294951227u;
++    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
++    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
++    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
++    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
++    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
++    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
++    v_intermediate[1u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
++    v_intermediate[57u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
++    v_intermediate[9u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
++    v_intermediate[49u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
++    v_intermediate[17u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
++    v_intermediate[41u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
++    v_intermediate[25u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
++    v_intermediate[33u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
+   }
+-  if (0u != (16u &
+-      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][1u] &
+-      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][2u] &
+-      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][3u] &
+-      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][4u] &
+-      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][5u] &
+-      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][6u] &
+-      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][7u] &
+-      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][8u] &
+-      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][9u])) {
+-    v_scratch = 0u;
+-    v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
+-    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
+-    v_scratch += ((uint32_t)(4294967288u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
+-    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
+-    v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
+-    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
+-    v_scratch += ((uint32_t)(6u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
+-    v_scratch += ((uint32_t)(42u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
+-    v_scratch += ((uint32_t)(6u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
+-    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
+-    v_scratch += ((uint32_t)(4294967288u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
+-    v_scratch += ((uint32_t)(42u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
+-    v_scratch += ((uint32_t)(152u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
+-    v_scratch += ((uint32_t)(42u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
+-    v_scratch += ((uint32_t)(4294967288u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
+-    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
+-    v_scratch += ((uint32_t)(6u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
+-    v_scratch += ((uint32_t)(42u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
+-    v_scratch += ((uint32_t)(6u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
+-    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
+-    v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
+-    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
+-    v_scratch += ((uint32_t)(4294967288u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
+-    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
+-    v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
+-    if (v_scratch < 2147483648u) {
+-      v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + 128u)) / 256u)));
+-    } else {
+-      v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + 128u)) / 256u)));
+-    }
+-    self->private_data.f_mcu_blocks[0u][0u] = ((uint16_t)(v_scratch));
+-    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][1u]));
+-    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][1u] == 0u)) {
+-      v_scratch = 0u;
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
+-      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
+-      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
+-      v_scratch += ((uint32_t)(4294967283u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
+-      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
+-      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
+-      v_scratch += ((uint32_t)(38u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
+-      v_scratch += ((uint32_t)(4294967258u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
+-      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
+-      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
+-      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
+-      v_scratch += ((uint32_t)(4294967283u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
+-      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
+-      v_scratch *= v_q_00;
+-      if (v_scratch < 2147483648u) {
+-        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
+-      } else {
+-        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
+-      }
+-      self->private_data.f_mcu_blocks[0u][1u] = ((uint16_t)(v_scratch));
+-    }
+-    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][2u]));
+-    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][2u] == 0u)) {
+-      v_scratch = 0u;
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
+-      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
+-      v_scratch += ((uint32_t)(4294967291u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
+-      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
+-      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
+-      v_scratch += ((uint32_t)(4294967282u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
+-      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
+-      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
+-      v_scratch += ((uint32_t)(4294967291u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
+-      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
+-      v_scratch *= v_q_00;
+-      if (v_scratch < 2147483648u) {
+-        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
+-      } else {
+-        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
+-      }
+-      self->private_data.f_mcu_blocks[0u][2u] = ((uint16_t)(v_scratch));
+-    }
+-    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][3u]));
+-    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][3u] == 0u)) {
+-      v_scratch = 0u;
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
+-      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
+-      v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
+-      v_scratch *= v_q_00;
+-      if (v_scratch < 2147483648u) {
+-        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
+-      } else {
+-        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
+-      }
+-      self->private_data.f_mcu_blocks[0u][3u] = ((uint16_t)(v_scratch));
+-    }
+-    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][8u]));
+-    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][8u] == 0u)) {
+-      v_scratch = 0u;
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
+-      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
+-      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
+-      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
+-      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
+-      v_scratch += ((uint32_t)(38u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
+-      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
+-      v_scratch += ((uint32_t)(4294967283u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
+-      v_scratch += ((uint32_t)(4294967258u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
+-      v_scratch += ((uint32_t)(4294967283u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
+-      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
+-      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
+-      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
+-      v_scratch *= v_q_00;
+-      if (v_scratch < 2147483648u) {
+-        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
+-      } else {
+-        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
+-      }
+-      self->private_data.f_mcu_blocks[0u][8u] = ((uint16_t)(v_scratch));
+-    }
+-    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][9u]));
+-    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][9u] == 0u)) {
+-      v_scratch = 0u;
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
+-      v_scratch += ((uint32_t)(9u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
+-      v_scratch += ((uint32_t)(4294967287u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
+-      v_scratch += ((uint32_t)(4294967287u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
+-      v_scratch += ((uint32_t)(9u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
+-      v_scratch *= v_q_00;
+-      if (v_scratch < 2147483648u) {
+-        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
+-      } else {
+-        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
+-      }
+-      self->private_data.f_mcu_blocks[0u][9u] = ((uint16_t)(v_scratch));
+-    }
+-    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][10u]));
+-    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][10u] == 0u)) {
+-      v_scratch = 0u;
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
+-      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
+-      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
+-      v_scratch *= v_q_00;
+-      if (v_scratch < 2147483648u) {
+-        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
+-      } else {
+-        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
+-      }
+-      self->private_data.f_mcu_blocks[0u][10u] = ((uint16_t)(v_scratch));
+-    }
+-    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][16u]));
+-    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][16u] == 0u)) {
+-      v_scratch = 0u;
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
+-      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
+-      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
+-      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
+-      v_scratch += ((uint32_t)(4294967291u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
+-      v_scratch += ((uint32_t)(4294967282u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
+-      v_scratch += ((uint32_t)(4294967291u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
+-      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
+-      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
+-      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
+-      v_scratch *= v_q_00;
+-      if (v_scratch < 2147483648u) {
+-        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
+-      } else {
+-        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
+-      }
+-      self->private_data.f_mcu_blocks[0u][16u] = ((uint16_t)(v_scratch));
+-    }
+-    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][17u]));
+-    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][17u] == 0u)) {
+-      v_scratch = 0u;
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
+-      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
+-      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
+-      v_scratch *= v_q_00;
+-      if (v_scratch < 2147483648u) {
+-        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
+-      } else {
+-        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
+-      }
+-      self->private_data.f_mcu_blocks[0u][17u] = ((uint16_t)(v_scratch));
+-    }
+-    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][24u]));
+-    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][24u] == 0u)) {
+-      v_scratch = 0u;
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
+-      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
+-      v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
+-      v_scratch *= v_q_00;
+-      if (v_scratch < 2147483648u) {
+-        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
+-      } else {
+-        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
+-      }
+-      self->private_data.f_mcu_blocks[0u][24u] = ((uint16_t)(v_scratch));
+-    }
++  if (0u == (self->private_data.f_mcu_blocks[0u][10u] |
++      self->private_data.f_mcu_blocks[0u][18u] |
++      self->private_data.f_mcu_blocks[0u][26u] |
++      self->private_data.f_mcu_blocks[0u][34u] |
++      self->private_data.f_mcu_blocks[0u][42u] |
++      self->private_data.f_mcu_blocks[0u][50u] |
++      self->private_data.f_mcu_blocks[0u][58u])) {
++    v_intermediate[2u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][2u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][2u])))) << 2u));
++    v_intermediate[10u] = v_intermediate[2u];
++    v_intermediate[18u] = v_intermediate[2u];
++    v_intermediate[26u] = v_intermediate[2u];
++    v_intermediate[34u] = v_intermediate[2u];
++    v_intermediate[42u] = v_intermediate[2u];
++    v_intermediate[50u] = v_intermediate[2u];
++    v_intermediate[58u] = v_intermediate[2u];
+   } else {
+-    v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][1u];
+-    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][1u]));
+-    if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][1u] == 0u)) {
+-      v_limit = ((((uint32_t)(1u)) << v_al) - 1u);
+-      v_scratch = 0u;
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
+-      v_scratch += ((uint32_t)(4294967289u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
+-      v_scratch += ((uint32_t)(50u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
+-      v_scratch += ((uint32_t)(4294967246u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
+-      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
+-      v_scratch *= v_q_00;
+-      if (v_scratch < 2147483648u) {
+-        v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
+-      } else {
+-        v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
+-      }
+-      self->private_data.f_mcu_blocks[0u][1u] = ((uint16_t)(v_scratch));
+-    }
+-    v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][5u];
+-    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][2u]));
+-    if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][2u] == 0u)) {
+-      v_limit = ((((uint32_t)(1u)) << v_al) - 1u);
+-      v_scratch = 0u;
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
+-      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
+-      v_scratch += ((uint32_t)(4294967272u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
+-      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
+-      v_scratch *= v_q_00;
+-      if (v_scratch < 2147483648u) {
+-        v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
+-      } else {
+-        v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
+-      }
+-      self->private_data.f_mcu_blocks[0u][2u] = ((uint16_t)(v_scratch));
+-    }
+-    v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][2u];
+-    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][8u]));
+-    if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][8u] == 0u)) {
+-      v_limit = ((((uint32_t)(1u)) << v_al) - 1u);
+-      v_scratch = 0u;
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
+-      v_scratch += ((uint32_t)(4294967289u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
+-      v_scratch += ((uint32_t)(50u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
+-      v_scratch += ((uint32_t)(4294967246u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
+-      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
+-      v_scratch *= v_q_00;
+-      if (v_scratch < 2147483648u) {
+-        v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
+-      } else {
+-        v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
+-      }
+-      self->private_data.f_mcu_blocks[0u][8u] = ((uint16_t)(v_scratch));
+-    }
+-    v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][4u];
+-    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][9u]));
+-    if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][9u] == 0u)) {
+-      v_limit = ((((uint32_t)(1u)) << v_al) - 1u);
+-      v_scratch = 0u;
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
+-      v_scratch += ((uint32_t)(10u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
+-      v_scratch += ((uint32_t)(4294967286u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
+-      v_scratch += ((uint32_t)(4294967286u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
+-      v_scratch += ((uint32_t)(10u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
+-      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
+-      v_scratch *= v_q_00;
+-      if (v_scratch < 2147483648u) {
+-        v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
+-      } else {
+-        v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
+-      }
+-      self->private_data.f_mcu_blocks[0u][9u] = ((uint16_t)(v_scratch));
+-    }
+-    v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][3u];
+-    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][16u]));
+-    if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][16u] == 0u)) {
+-      v_limit = ((((uint32_t)(1u)) << v_al) - 1u);
+-      v_scratch = 0u;
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
+-      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
+-      v_scratch += ((uint32_t)(4294967272u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
+-      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
+-      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
+-      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
+-      v_scratch *= v_q_00;
+-      if (v_scratch < 2147483648u) {
+-        v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
+-      } else {
+-        v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
+-      }
+-      self->private_data.f_mcu_blocks[0u][16u] = ((uint16_t)(v_scratch));
+-    }
++    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][18u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][18u]))));
++    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][50u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][50u]))));
++    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
++    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
++    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
++    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][2u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][2u]))));
++    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][34u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][34u]))));
++    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
++    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
++    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
++    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
++    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
++    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
++    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][10u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][10u]))));
++    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][26u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][26u]))));
++    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][42u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][42u]))));
++    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][58u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][58u]))));
++    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
++    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
++    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
++    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
++    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
++    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
++    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
++    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
++    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
++    v_ci51 *= 4294964100u;
++    v_ci53 *= 4294946301u;
++    v_ci71 *= 4294959923u;
++    v_ci73 *= 4294951227u;
++    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
++    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
++    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
++    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
++    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
++    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
++    v_intermediate[2u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
++    v_intermediate[58u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
++    v_intermediate[10u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
++    v_intermediate[50u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
++    v_intermediate[18u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
++    v_intermediate[42u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
++    v_intermediate[26u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
++    v_intermediate[34u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
+   }
+-  return wuffs_base__make_empty_struct();
+-}
+-
+-// -------- func jpeg.decoder.decode_mcu
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static uint32_t
+-wuffs_jpeg__decoder__decode_mcu(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__slice_u8 a_workbuf,
+-    uint32_t a_mx,
+-    uint32_t a_my) {
+-  return (*self->private_impl.choosy_decode_mcu)(self, a_workbuf, a_mx, a_my);
+-}
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static uint32_t
+-wuffs_jpeg__decoder__decode_mcu__choosy_default(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__slice_u8 a_workbuf,
+-    uint32_t a_mx,
+-    uint32_t a_my) {
+-  uint32_t v_ret = 0;
+-  uint64_t v_bits = 0;
+-  uint32_t v_n_bits = 0;
+-  uint8_t v_csel = 0;
+-  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
+-  wuffs_base__io_buffer* v_r = &u_r;
+-  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint32_t v_pos = 0;
+-  uint8_t v_dc_h = 0;
+-  uint32_t v_dc_symbol = 0;
+-  uint32_t v_dc_ht_fast = 0;
+-  uint32_t v_dc_bl = 0;
+-  uint32_t v_dc_code = 0;
+-  uint32_t v_dc_blm1 = 0;
+-  uint32_t v_dc_ht_slow = 0;
+-  uint16_t v_dc_value = 0;
+-  uint16_t v_dc_extend = 0;
+-  const uint16_t* v_ac_huff_table_fast = NULL;
+-  uint8_t v_ac_h = 0;
+-  uint32_t v_ac_symbol = 0;
+-  uint32_t v_ac_ht_fast = 0;
+-  uint32_t v_ac_bl = 0;
+-  uint32_t v_ac_code = 0;
+-  uint32_t v_ac_blm1 = 0;
+-  uint32_t v_ac_ht_slow = 0;
+-  uint16_t v_ac_value = 0;
+-  uint16_t v_ac_extend = 0;
+-  uint32_t v_ac_rrrr = 0;
+-  uint32_t v_ac_ssss = 0;
+-  uint32_t v_z = 0;
+-  uint32_t v_mcb = 0;
+-  uint64_t v_stride = 0;
+-  uint64_t v_offset = 0;
+-
+-  v_bits = self->private_impl.f_bitstream_bits;
+-  v_n_bits = self->private_impl.f_bitstream_n_bits;
+-  if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) {
+-    return 2u;
++  if (0u == (self->private_data.f_mcu_blocks[0u][11u] |
++      self->private_data.f_mcu_blocks[0u][19u] |
++      self->private_data.f_mcu_blocks[0u][27u] |
++      self->private_data.f_mcu_blocks[0u][35u] |
++      self->private_data.f_mcu_blocks[0u][43u] |
++      self->private_data.f_mcu_blocks[0u][51u] |
++      self->private_data.f_mcu_blocks[0u][59u])) {
++    v_intermediate[3u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][3u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][3u])))) << 2u));
++    v_intermediate[11u] = v_intermediate[3u];
++    v_intermediate[19u] = v_intermediate[3u];
++    v_intermediate[27u] = v_intermediate[3u];
++    v_intermediate[35u] = v_intermediate[3u];
++    v_intermediate[43u] = v_intermediate[3u];
++    v_intermediate[51u] = v_intermediate[3u];
++    v_intermediate[59u] = v_intermediate[3u];
++  } else {
++    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][19u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][19u]))));
++    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][51u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][51u]))));
++    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
++    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
++    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
++    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][3u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][3u]))));
++    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][35u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][35u]))));
++    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
++    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
++    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
++    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
++    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
++    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
++    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][11u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][11u]))));
++    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][27u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][27u]))));
++    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][43u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][43u]))));
++    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][59u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][59u]))));
++    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
++    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
++    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
++    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
++    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
++    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
++    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
++    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
++    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
++    v_ci51 *= 4294964100u;
++    v_ci53 *= 4294946301u;
++    v_ci71 *= 4294959923u;
++    v_ci73 *= 4294951227u;
++    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
++    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
++    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
++    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
++    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
++    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
++    v_intermediate[3u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
++    v_intermediate[59u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
++    v_intermediate[11u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
++    v_intermediate[51u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
++    v_intermediate[19u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
++    v_intermediate[43u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
++    v_intermediate[27u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
++    v_intermediate[35u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
+   }
+-  {
+-    wuffs_base__io_buffer* o_0_v_r = v_r;
+-    const uint8_t *o_0_iop_v_r = iop_v_r;
+-    const uint8_t *o_0_io0_v_r = io0_v_r;
+-    const uint8_t *o_0_io1_v_r = io1_v_r;
+-    const uint8_t *o_0_io2_v_r = io2_v_r;
+-    v_r = wuffs_base__io_reader__set(
+-        &u_r,
+-        &iop_v_r,
+-        &io0_v_r,
+-        &io1_v_r,
+-        &io2_v_r,
+-        wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
+-        self->private_impl.f_bitstream_ri,
+-        self->private_impl.f_bitstream_wi),
+-        ((uint64_t)(self->private_impl.f_bitstream_ri)));
+-    do {
+-      while (self->private_impl.f_mcu_current_block < self->private_impl.f_mcu_num_blocks) {
+-        while (self->private_impl.f_mcu_zig_index <= 0u) {
+-          wuffs_base__bulk_memset(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, 0u);
+-          if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
+-            v_ret = 1u;
+-            goto label__goto_done__break;
+-          }
+-          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
+-          iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
+-          v_n_bits |= 56u;
+-          v_dc_h = self->private_impl.f_mcu_blocks_dc_hselector[self->private_impl.f_mcu_current_block];
+-          v_dc_ht_fast = ((uint32_t)(self->private_impl.f_huff_tables_fast[v_dc_h][(v_bits >> 56u)]));
+-          v_dc_bl = (v_dc_ht_fast >> 8u);
+-          if (v_n_bits >= v_dc_bl) {
+-            v_dc_symbol = (15u & v_dc_ht_fast);
+-            v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
+-            v_bits <<= (v_dc_bl & 63u);
+-            v_n_bits -= v_dc_bl;
+-          } else {
+-            v_dc_code = ((uint32_t)((v_bits >> 55u)));
+-            v_dc_blm1 = 8u;
+-            v_bits <<= 9u;
+-            v_n_bits -= 9u;
+-            while (true) {
+-              v_dc_ht_slow = self->private_impl.f_huff_tables_slow[v_dc_h][v_dc_blm1];
+-              if (v_dc_code < (v_dc_ht_slow >> 8u)) {
+-                v_dc_symbol = (15u & ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_dc_h][(255u & ((uint32_t)(v_dc_code + v_dc_ht_slow)))])));
+-                v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
+-                break;
+-              }
+-              v_dc_code = (((uint32_t)(v_dc_code << 1u)) | ((uint32_t)((v_bits >> 63u))));
+-              v_bits <<= 1u;
+-              v_n_bits -= 1u;
+-              v_dc_blm1 = ((v_dc_blm1 + 1u) & 15u);
+-              if (v_dc_blm1 == 0u) {
+-                v_dc_symbol = 0u;
+-                v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
+-                break;
+-              }
+-            }
+-          }
+-          v_dc_value = ((uint16_t)(((v_bits >> 32u) >> (32u - v_dc_symbol))));
+-          v_dc_value += (v_dc_extend & (((uint16_t)(wuffs_base__utility__sign_extend_rshift_u64(v_bits, 63u))) ^ 65535u));
+-          v_bits <<= v_dc_symbol;
+-          v_n_bits -= v_dc_symbol;
+-          v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[self->private_impl.f_mcu_current_block]];
+-          self->private_impl.f_mcu_previous_dc_values[v_csel] += v_dc_value;
+-          self->private_data.f_mcu_blocks[0u][0u] = self->private_impl.f_mcu_previous_dc_values[v_csel];
+-          self->private_impl.f_mcu_zig_index = 1u;
+-          break;
+-        }
+-        if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
+-          v_ret = 1u;
+-          goto label__goto_done__break;
+-        }
+-        if (v_n_bits < 16u) {
+-          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
+-        }
+-        v_z = 1u;
+-        self->private_impl.f_mcu_zig_index = 0u;
+-        v_ac_h = self->private_impl.f_mcu_blocks_ac_hselector[self->private_impl.f_mcu_current_block];
+-        v_ac_huff_table_fast = &self->private_impl.f_huff_tables_fast[v_ac_h][0u];
+-        while (v_z < 64u) {
+-          v_ac_ht_fast = ((uint32_t)(v_ac_huff_table_fast[(v_bits >> 56u)]));
+-          if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
+-            v_ret = 2u;
+-            goto label__goto_done__break;
+-          }
+-          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
+-          iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
+-          v_n_bits |= 56u;
+-          v_ac_bl = (v_ac_ht_fast >> 8u);
+-          if (v_n_bits >= v_ac_bl) {
+-            v_ac_symbol = (255u & v_ac_ht_fast);
+-            v_bits <<= (v_ac_bl & 63u);
+-            v_n_bits -= v_ac_bl;
+-          } else {
+-            v_ac_code = ((uint32_t)((v_bits >> 55u)));
+-            v_ac_blm1 = 8u;
+-            v_bits <<= 9u;
+-            v_n_bits -= 9u;
+-            while (true) {
+-              v_ac_ht_slow = self->private_impl.f_huff_tables_slow[v_ac_h][v_ac_blm1];
+-              if (v_ac_code < (v_ac_ht_slow >> 8u)) {
+-                v_ac_symbol = ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_ac_h][(255u & ((uint32_t)(v_ac_code + v_ac_ht_slow)))]));
+-                break;
+-              }
+-              v_ac_code = (((uint32_t)(v_ac_code << 1u)) | ((uint32_t)((v_bits >> 63u))));
+-              v_bits <<= 1u;
+-              v_n_bits -= 1u;
+-              v_ac_blm1 = ((v_ac_blm1 + 1u) & 15u);
+-              if (v_ac_blm1 == 0u) {
+-                v_ac_symbol = 0u;
+-                break;
+-              }
+-            }
+-          }
+-          v_ac_rrrr = (v_ac_symbol >> 4u);
+-          v_z += (v_ac_rrrr + 1u);
+-          v_ac_ssss = (v_ac_symbol & 15u);
+-          v_ac_extend = WUFFS_JPEG__EXTEND[v_ac_ssss];
+-          if (v_ac_ssss > 0u) {
+-            v_ac_value = ((uint16_t)((v_bits >> (64u - v_ac_ssss))));
+-            v_ac_value += (v_ac_extend & (((uint16_t)(wuffs_base__utility__sign_extend_rshift_u64(v_bits, 63u))) ^ 65535u));
+-            v_bits <<= v_ac_ssss;
+-            v_n_bits -= v_ac_ssss;
+-            self->private_data.f_mcu_blocks[0u][WUFFS_JPEG__UNZIG[v_z]] = v_ac_value;
+-          } else if (v_ac_rrrr < 15u) {
+-            break;
+-          }
+-        }
+-        v_mcb = self->private_impl.f_mcu_current_block;
+-        self->private_impl.f_mcu_current_block += 1u;
+-        if (self->private_impl.f_test_only_interrupt_decode_mcu) {
+-          goto label__goto_done__break;
+-        }
+-        v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[v_mcb]];
+-        v_stride = ((uint64_t)(self->private_impl.f_components_workbuf_widths[v_csel]));
+-        v_offset = (self->private_impl.f_mcu_blocks_offset[v_mcb] + (((uint64_t)(self->private_impl.f_mcu_blocks_mx_mul[v_mcb])) * ((uint64_t)(a_mx))) + (((uint64_t)(self->private_impl.f_mcu_blocks_my_mul[v_mcb])) * ((uint64_t)(a_my))));
+-        if (v_offset <= ((uint64_t)(a_workbuf.len))) {
+-          wuffs_jpeg__decoder__decode_idct(self, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset), v_stride, ((uint32_t)(self->private_impl.f_components_tq[v_csel])));
+-        }
+-      }
+-      self->private_impl.f_mcu_current_block = 0u;
+-    } while (0);
+-    label__goto_done__break:;
+-    v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r)))));
+-    if (v_pos > self->private_impl.f_bitstream_wi) {
+-      v_ret = 2u;
+-    } else {
+-      self->private_impl.f_bitstream_ri = v_pos;
+-    }
+-    v_r = o_0_v_r;
+-    iop_v_r = o_0_iop_v_r;
+-    io0_v_r = o_0_io0_v_r;
+-    io1_v_r = o_0_io1_v_r;
+-    io2_v_r = o_0_io2_v_r;
++  if (0u == (self->private_data.f_mcu_blocks[0u][12u] |
++      self->private_data.f_mcu_blocks[0u][20u] |
++      self->private_data.f_mcu_blocks[0u][28u] |
++      self->private_data.f_mcu_blocks[0u][36u] |
++      self->private_data.f_mcu_blocks[0u][44u] |
++      self->private_data.f_mcu_blocks[0u][52u] |
++      self->private_data.f_mcu_blocks[0u][60u])) {
++    v_intermediate[4u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][4u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][4u])))) << 2u));
++    v_intermediate[12u] = v_intermediate[4u];
++    v_intermediate[20u] = v_intermediate[4u];
++    v_intermediate[28u] = v_intermediate[4u];
++    v_intermediate[36u] = v_intermediate[4u];
++    v_intermediate[44u] = v_intermediate[4u];
++    v_intermediate[52u] = v_intermediate[4u];
++    v_intermediate[60u] = v_intermediate[4u];
++  } else {
++    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][20u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][20u]))));
++    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][52u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][52u]))));
++    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
++    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
++    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
++    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][4u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][4u]))));
++    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][36u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][36u]))));
++    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
++    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
++    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
++    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
++    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
++    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
++    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][12u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][12u]))));
++    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][28u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][28u]))));
++    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][44u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][44u]))));
++    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][60u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][60u]))));
++    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
++    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
++    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
++    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
++    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
++    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
++    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
++    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
++    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
++    v_ci51 *= 4294964100u;
++    v_ci53 *= 4294946301u;
++    v_ci71 *= 4294959923u;
++    v_ci73 *= 4294951227u;
++    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
++    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
++    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
++    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
++    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
++    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
++    v_intermediate[4u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
++    v_intermediate[60u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
++    v_intermediate[12u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
++    v_intermediate[52u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
++    v_intermediate[20u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
++    v_intermediate[44u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
++    v_intermediate[28u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
++    v_intermediate[36u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
+   }
+-  self->private_impl.f_bitstream_bits = v_bits;
+-  self->private_impl.f_bitstream_n_bits = v_n_bits;
+-  return v_ret;
+-}
+-
+-// -------- func jpeg.decoder.decode_mcu_progressive_ac_high_bits
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static uint32_t
+-wuffs_jpeg__decoder__decode_mcu_progressive_ac_high_bits(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__slice_u8 a_workbuf,
+-    uint32_t a_mx,
+-    uint32_t a_my) {
+-  uint32_t v_ret = 0;
+-  uint64_t v_bits = 0;
+-  uint32_t v_n_bits = 0;
+-  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
+-  wuffs_base__io_buffer* v_r = &u_r;
+-  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint32_t v_pos = 0;
+-  const uint16_t* v_ac_huff_table_fast = NULL;
+-  uint8_t v_ac_h = 0;
+-  uint32_t v_ac_symbol = 0;
+-  uint32_t v_ac_ht_fast = 0;
+-  uint32_t v_ac_bl = 0;
+-  uint32_t v_ac_code = 0;
+-  uint32_t v_ac_blm1 = 0;
+-  uint32_t v_ac_ht_slow = 0;
+-  uint16_t v_ac_value = 0;
+-  uint16_t v_ac_extend = 0;
+-  uint32_t v_ac_rrrr = 0;
+-  uint32_t v_ac_ssss = 0;
+-  uint32_t v_z = 0;
+-
+-  if (self->private_impl.f_eob_run > 0u) {
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wconversion"
+-#endif
+-    self->private_impl.f_eob_run -= 1u;
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-    return 0u;
++  if (0u == (self->private_data.f_mcu_blocks[0u][13u] |
++      self->private_data.f_mcu_blocks[0u][21u] |
++      self->private_data.f_mcu_blocks[0u][29u] |
++      self->private_data.f_mcu_blocks[0u][37u] |
++      self->private_data.f_mcu_blocks[0u][45u] |
++      self->private_data.f_mcu_blocks[0u][53u] |
++      self->private_data.f_mcu_blocks[0u][61u])) {
++    v_intermediate[5u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][5u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][5u])))) << 2u));
++    v_intermediate[13u] = v_intermediate[5u];
++    v_intermediate[21u] = v_intermediate[5u];
++    v_intermediate[29u] = v_intermediate[5u];
++    v_intermediate[37u] = v_intermediate[5u];
++    v_intermediate[45u] = v_intermediate[5u];
++    v_intermediate[53u] = v_intermediate[5u];
++    v_intermediate[61u] = v_intermediate[5u];
++  } else {
++    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][21u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][21u]))));
++    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][53u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][53u]))));
++    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
++    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
++    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
++    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][5u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][5u]))));
++    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][37u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][37u]))));
++    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
++    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
++    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
++    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
++    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
++    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
++    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][13u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][13u]))));
++    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][29u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][29u]))));
++    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][45u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][45u]))));
++    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][61u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][61u]))));
++    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
++    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
++    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
++    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
++    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
++    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
++    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
++    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
++    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
++    v_ci51 *= 4294964100u;
++    v_ci53 *= 4294946301u;
++    v_ci71 *= 4294959923u;
++    v_ci73 *= 4294951227u;
++    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
++    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
++    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
++    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
++    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
++    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
++    v_intermediate[5u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
++    v_intermediate[61u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
++    v_intermediate[13u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
++    v_intermediate[53u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
++    v_intermediate[21u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
++    v_intermediate[45u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
++    v_intermediate[29u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
++    v_intermediate[37u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
+   }
+-  v_bits = self->private_impl.f_bitstream_bits;
+-  v_n_bits = self->private_impl.f_bitstream_n_bits;
+-  if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) {
+-    return 2u;
++  if (0u == (self->private_data.f_mcu_blocks[0u][14u] |
++      self->private_data.f_mcu_blocks[0u][22u] |
++      self->private_data.f_mcu_blocks[0u][30u] |
++      self->private_data.f_mcu_blocks[0u][38u] |
++      self->private_data.f_mcu_blocks[0u][46u] |
++      self->private_data.f_mcu_blocks[0u][54u] |
++      self->private_data.f_mcu_blocks[0u][62u])) {
++    v_intermediate[6u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][6u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][6u])))) << 2u));
++    v_intermediate[14u] = v_intermediate[6u];
++    v_intermediate[22u] = v_intermediate[6u];
++    v_intermediate[30u] = v_intermediate[6u];
++    v_intermediate[38u] = v_intermediate[6u];
++    v_intermediate[46u] = v_intermediate[6u];
++    v_intermediate[54u] = v_intermediate[6u];
++    v_intermediate[62u] = v_intermediate[6u];
++  } else {
++    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][22u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][22u]))));
++    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][54u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][54u]))));
++    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
++    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
++    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
++    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][6u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][6u]))));
++    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][38u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][38u]))));
++    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
++    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
++    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
++    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
++    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
++    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
++    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][14u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][14u]))));
++    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][30u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][30u]))));
++    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][46u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][46u]))));
++    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][62u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][62u]))));
++    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
++    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
++    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
++    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
++    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
++    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
++    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
++    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
++    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
++    v_ci51 *= 4294964100u;
++    v_ci53 *= 4294946301u;
++    v_ci71 *= 4294959923u;
++    v_ci73 *= 4294951227u;
++    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
++    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
++    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
++    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
++    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
++    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
++    v_intermediate[6u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
++    v_intermediate[62u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
++    v_intermediate[14u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
++    v_intermediate[54u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
++    v_intermediate[22u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
++    v_intermediate[46u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
++    v_intermediate[30u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
++    v_intermediate[38u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
+   }
+-  {
+-    wuffs_base__io_buffer* o_0_v_r = v_r;
+-    const uint8_t *o_0_iop_v_r = iop_v_r;
+-    const uint8_t *o_0_io0_v_r = io0_v_r;
+-    const uint8_t *o_0_io1_v_r = io1_v_r;
+-    const uint8_t *o_0_io2_v_r = io2_v_r;
+-    v_r = wuffs_base__io_reader__set(
+-        &u_r,
+-        &iop_v_r,
+-        &io0_v_r,
+-        &io1_v_r,
+-        &io2_v_r,
+-        wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
+-        self->private_impl.f_bitstream_ri,
+-        self->private_impl.f_bitstream_wi),
+-        ((uint64_t)(self->private_impl.f_bitstream_ri)));
+-    do {
+-      do {
+-        if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
+-          v_ret = 1u;
+-          goto label__goto_done__break;
+-        }
+-        if (v_n_bits < 16u) {
+-          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
+-        }
+-        v_z = self->private_impl.f_mcu_zig_index;
+-        self->private_impl.f_mcu_zig_index = 0u;
+-        v_ac_h = self->private_impl.f_mcu_blocks_ac_hselector[0u];
+-        v_ac_huff_table_fast = &self->private_impl.f_huff_tables_fast[v_ac_h][0u];
+-        while (v_z <= ((uint32_t)(self->private_impl.f_scan_se))) {
+-          v_ac_ht_fast = ((uint32_t)(v_ac_huff_table_fast[(v_bits >> 56u)]));
+-          if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
+-            v_ret = 2u;
+-            goto label__goto_done__break;
+-          }
+-          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
+-          iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
+-          v_n_bits |= 56u;
+-          v_ac_bl = (v_ac_ht_fast >> 8u);
+-          if (v_n_bits >= v_ac_bl) {
+-            v_ac_symbol = (255u & v_ac_ht_fast);
+-            v_bits <<= (v_ac_bl & 63u);
+-            v_n_bits -= v_ac_bl;
+-          } else {
+-            v_ac_code = ((uint32_t)((v_bits >> 55u)));
+-            v_ac_blm1 = 8u;
+-            v_bits <<= 9u;
+-            v_n_bits -= 9u;
+-            while (true) {
+-              v_ac_ht_slow = self->private_impl.f_huff_tables_slow[v_ac_h][v_ac_blm1];
+-              if (v_ac_code < (v_ac_ht_slow >> 8u)) {
+-                v_ac_symbol = ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_ac_h][(255u & ((uint32_t)(v_ac_code + v_ac_ht_slow)))]));
+-                break;
+-              }
+-              v_ac_code = (((uint32_t)(v_ac_code << 1u)) | ((uint32_t)((v_bits >> 63u))));
+-              v_bits <<= 1u;
+-              v_n_bits -= 1u;
+-              v_ac_blm1 = ((v_ac_blm1 + 1u) & 15u);
+-              if (v_ac_blm1 == 0u) {
+-                v_ac_symbol = 0u;
+-                break;
+-              }
+-            }
+-          }
+-          v_ac_rrrr = (v_ac_symbol >> 4u);
+-          v_z += (v_ac_rrrr + 1u);
+-          v_ac_ssss = (v_ac_symbol & 15u);
+-          v_ac_extend = WUFFS_JPEG__EXTEND[v_ac_ssss];
+-          if (v_ac_ssss > 0u) {
+-            v_ac_value = ((uint16_t)((v_bits >> (64u - v_ac_ssss))));
+-            v_ac_value += (v_ac_extend & (((uint16_t)(wuffs_base__utility__sign_extend_rshift_u64(v_bits, 63u))) ^ 65535u));
+-            v_bits <<= v_ac_ssss;
+-            v_n_bits -= v_ac_ssss;
+-            self->private_data.f_mcu_blocks[0u][WUFFS_JPEG__UNZIG[v_z]] = ((uint16_t)(((uint16_t)(v_ac_value << self->private_impl.f_scan_al))));
+-          } else if (v_ac_rrrr < 15u) {
+-            self->private_impl.f_eob_run = ((uint16_t)(((((uint16_t)(1u)) << v_ac_rrrr) - 1u)));
+-            if (v_ac_rrrr > 0u) {
+-              self->private_impl.f_eob_run += ((uint16_t)((v_bits >> (64u - v_ac_rrrr))));
+-              v_bits <<= v_ac_rrrr;
+-              v_n_bits -= v_ac_rrrr;
+-            }
+-            break;
+-          }
+-        }
+-      } while (0);
+-    } while (0);
+-    label__goto_done__break:;
+-    v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r)))));
+-    if (v_pos > self->private_impl.f_bitstream_wi) {
+-      v_ret = 2u;
+-    } else {
+-      self->private_impl.f_bitstream_ri = v_pos;
+-    }
+-    v_r = o_0_v_r;
+-    iop_v_r = o_0_iop_v_r;
+-    io0_v_r = o_0_io0_v_r;
+-    io1_v_r = o_0_io1_v_r;
+-    io2_v_r = o_0_io2_v_r;
++  if (0u == (self->private_data.f_mcu_blocks[0u][15u] |
++      self->private_data.f_mcu_blocks[0u][23u] |
++      self->private_data.f_mcu_blocks[0u][31u] |
++      self->private_data.f_mcu_blocks[0u][39u] |
++      self->private_data.f_mcu_blocks[0u][47u] |
++      self->private_data.f_mcu_blocks[0u][55u] |
++      self->private_data.f_mcu_blocks[0u][63u])) {
++    v_intermediate[7u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][7u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][7u])))) << 2u));
++    v_intermediate[15u] = v_intermediate[7u];
++    v_intermediate[23u] = v_intermediate[7u];
++    v_intermediate[31u] = v_intermediate[7u];
++    v_intermediate[39u] = v_intermediate[7u];
++    v_intermediate[47u] = v_intermediate[7u];
++    v_intermediate[55u] = v_intermediate[7u];
++    v_intermediate[63u] = v_intermediate[7u];
++  } else {
++    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][23u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][23u]))));
++    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][55u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][55u]))));
++    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
++    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
++    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
++    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][7u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][7u]))));
++    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][39u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][39u]))));
++    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
++    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
++    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
++    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
++    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
++    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
++    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][15u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][15u]))));
++    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][31u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][31u]))));
++    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][47u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][47u]))));
++    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][63u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][63u]))));
++    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
++    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
++    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
++    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
++    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
++    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
++    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
++    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
++    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
++    v_ci51 *= 4294964100u;
++    v_ci53 *= 4294946301u;
++    v_ci71 *= 4294959923u;
++    v_ci73 *= 4294951227u;
++    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
++    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
++    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
++    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
++    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
++    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
++    v_intermediate[7u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
++    v_intermediate[63u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
++    v_intermediate[15u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
++    v_intermediate[55u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
++    v_intermediate[23u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
++    v_intermediate[47u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
++    v_intermediate[31u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
++    v_intermediate[39u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
+   }
+-  self->private_impl.f_bitstream_bits = v_bits;
+-  self->private_impl.f_bitstream_n_bits = v_n_bits;
+-  return v_ret;
+-}
+-
+-// -------- func jpeg.decoder.decode_mcu_progressive_ac_low_bit
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static uint32_t
+-wuffs_jpeg__decoder__decode_mcu_progressive_ac_low_bit(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__slice_u8 a_workbuf,
+-    uint32_t a_mx,
+-    uint32_t a_my) {
+-  uint32_t v_ret = 0;
+-  uint64_t v_bits = 0;
+-  uint32_t v_n_bits = 0;
+-  uint16_t v_one_lshift_scan_al = 0;
+-  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
+-  wuffs_base__io_buffer* v_r = &u_r;
+-  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint32_t v_pos = 0;
+-  const uint16_t* v_ac_huff_table_fast = NULL;
+-  uint8_t v_ac_h = 0;
+-  uint32_t v_ac_symbol = 0;
+-  uint32_t v_ac_ht_fast = 0;
+-  uint32_t v_ac_bl = 0;
+-  uint32_t v_ac_code = 0;
+-  uint32_t v_ac_blm1 = 0;
+-  uint32_t v_ac_ht_slow = 0;
+-  uint16_t v_ac_value = 0;
+-  uint32_t v_ac_rrrr = 0;
+-  uint32_t v_ac_ssss = 0;
+-  uint8_t v_unzig = 0;
+-  bool v_bit = false;
+-
+-  v_bits = self->private_impl.f_bitstream_bits;
+-  v_n_bits = self->private_impl.f_bitstream_n_bits;
+-  v_one_lshift_scan_al = (((uint16_t)(1u)) << self->private_impl.f_scan_al);
+-  if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) {
+-    return 2u;
+-  }
+-  {
+-    wuffs_base__io_buffer* o_0_v_r = v_r;
+-    const uint8_t *o_0_iop_v_r = iop_v_r;
+-    const uint8_t *o_0_io0_v_r = io0_v_r;
+-    const uint8_t *o_0_io1_v_r = io1_v_r;
+-    const uint8_t *o_0_io2_v_r = io2_v_r;
+-    v_r = wuffs_base__io_reader__set(
+-        &u_r,
+-        &iop_v_r,
+-        &io0_v_r,
+-        &io1_v_r,
+-        &io2_v_r,
+-        wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
+-        self->private_impl.f_bitstream_ri,
+-        self->private_impl.f_bitstream_wi),
+-        ((uint64_t)(self->private_impl.f_bitstream_ri)));
+-    do {
+-      do {
+-        if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
+-          v_ret = 1u;
+-          goto label__goto_done__break;
+-        }
+-        while (true) {
+-          if (self->private_impl.f_eob_run > 0u) {
+-            break;
+-          }
+-          v_ac_h = self->private_impl.f_mcu_blocks_ac_hselector[0u];
+-          v_ac_huff_table_fast = &self->private_impl.f_huff_tables_fast[v_ac_h][0u];
+-          while (true) {
+-            if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
+-              v_ret = 2u;
+-              goto label__goto_done__break;
+-            }
+-            v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
+-            iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
+-            v_n_bits |= 56u;
+-            v_ac_ht_fast = ((uint32_t)(v_ac_huff_table_fast[(v_bits >> 56u)]));
+-            v_ac_bl = (v_ac_ht_fast >> 8u);
+-            if (v_n_bits >= v_ac_bl) {
+-              v_ac_symbol = (255u & v_ac_ht_fast);
+-              v_bits <<= (v_ac_bl & 63u);
+-              v_n_bits -= v_ac_bl;
+-            } else {
+-              v_ac_code = ((uint32_t)((v_bits >> 55u)));
+-              v_ac_blm1 = 8u;
+-              v_bits <<= 9u;
+-              v_n_bits -= 9u;
+-              while (true) {
+-                v_ac_ht_slow = self->private_impl.f_huff_tables_slow[v_ac_h][v_ac_blm1];
+-                if (v_ac_code < (v_ac_ht_slow >> 8u)) {
+-                  v_ac_symbol = ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_ac_h][(255u & ((uint32_t)(v_ac_code + v_ac_ht_slow)))]));
+-                  break;
+-                }
+-                v_ac_code = (((uint32_t)(v_ac_code << 1u)) | ((uint32_t)((v_bits >> 63u))));
+-                v_bits <<= 1u;
+-                v_n_bits -= 1u;
+-                v_ac_blm1 = ((v_ac_blm1 + 1u) & 15u);
+-                if (v_ac_blm1 == 0u) {
+-                  v_ac_symbol = 0u;
+-                  break;
+-                }
+-              }
+-            }
+-            v_ac_rrrr = (v_ac_symbol >> 4u);
+-            v_ac_ssss = (v_ac_symbol & 15u);
+-            v_ac_value = 0u;
+-            if (v_ac_ssss > 0u) {
+-              v_ac_value = (((uint16_t)(1u)) << self->private_impl.f_scan_al);
+-              if ((v_bits >> 63u) == 0u) {
+-                v_ac_value = ((uint16_t)(((uint16_t)(65535u)) << self->private_impl.f_scan_al));
+-              }
+-              v_bits <<= 1u;
+-              v_n_bits -= 1u;
+-            } else if (v_ac_rrrr < 15u) {
+-              self->private_impl.f_eob_run = (((uint16_t)(1u)) << v_ac_rrrr);
+-              if (v_ac_rrrr > 0u) {
+-                self->private_impl.f_eob_run += ((uint16_t)((v_bits >> (64u - v_ac_rrrr))));
+-                v_bits <<= v_ac_rrrr;
+-                v_n_bits -= v_ac_rrrr;
+-              }
+-              goto label__goto_do_eob__break;
+-            }
+-            while (true) {
+-              v_unzig = WUFFS_JPEG__UNZIG[(1u + self->private_impl.f_mcu_zig_index)];
+-              if (self->private_data.f_mcu_blocks[0u][v_unzig] != 0u) {
+-                if (v_n_bits == 0u) {
+-                  if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
+-                    v_ret = 2u;
+-                    goto label__goto_done__break;
+-                  }
+-                  v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
+-                  iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
+-                  v_n_bits |= 56u;
+-                }
+-                v_bit = ((v_bits >> 63u) > 0u);
+-                v_bits <<= 1u;
+-                v_n_bits -= 1u;
+-                if (v_bit) {
+-                  if (self->private_data.f_mcu_blocks[0u][v_unzig] < 32768u) {
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wconversion"
+-#endif
+-                    self->private_data.f_mcu_blocks[0u][v_unzig] += v_one_lshift_scan_al;
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-                  } else {
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wconversion"
+-#endif
+-                    self->private_data.f_mcu_blocks[0u][v_unzig] -= v_one_lshift_scan_al;
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-                  }
+-                }
+-              } else if (v_ac_rrrr <= 0u) {
+-                break;
+-              } else {
+-                v_ac_rrrr -= 1u;
+-              }
+-              if (self->private_impl.f_mcu_zig_index >= ((uint32_t)(self->private_impl.f_scan_se))) {
+-                break;
+-              }
+-              self->private_impl.f_mcu_zig_index += 1u;
+-            }
+-            if (v_ac_value != 0u) {
+-              self->private_data.f_mcu_blocks[0u][WUFFS_JPEG__UNZIG[(1u + self->private_impl.f_mcu_zig_index)]] = v_ac_value;
+-            }
+-            if (self->private_impl.f_mcu_zig_index >= ((uint32_t)(self->private_impl.f_scan_se))) {
+-              break;
+-            }
+-            self->private_impl.f_mcu_zig_index += 1u;
+-          }
+-          goto label__block__break;
+-        }
+-        label__goto_do_eob__break:;
+-        if (self->private_impl.f_eob_run <= 0u) {
+-          v_ret = 2u;
+-          goto label__goto_done__break;
+-        }
+-        while (true) {
+-          v_unzig = WUFFS_JPEG__UNZIG[(1u + self->private_impl.f_mcu_zig_index)];
+-          if (self->private_data.f_mcu_blocks[0u][v_unzig] != 0u) {
+-            if (v_n_bits == 0u) {
+-              if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
+-                v_ret = 2u;
+-                goto label__goto_done__break;
+-              }
+-              v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
+-              iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
+-              v_n_bits |= 56u;
+-            }
+-            v_bit = ((v_bits >> 63u) > 0u);
+-            v_bits <<= 1u;
+-            v_n_bits -= 1u;
+-            if (v_bit) {
+-              if (self->private_data.f_mcu_blocks[0u][v_unzig] < 32768u) {
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wconversion"
+-#endif
+-                self->private_data.f_mcu_blocks[0u][v_unzig] += v_one_lshift_scan_al;
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-              } else {
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wconversion"
+-#endif
+-                self->private_data.f_mcu_blocks[0u][v_unzig] -= v_one_lshift_scan_al;
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-              }
+-            }
+-          }
+-          if (self->private_impl.f_mcu_zig_index >= ((uint32_t)(self->private_impl.f_scan_se))) {
+-            break;
+-          }
+-          self->private_impl.f_mcu_zig_index += 1u;
+-        }
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wconversion"
+-#endif
+-        self->private_impl.f_eob_run -= 1u;
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-      } while (0);
+-      label__block__break:;
+-    } while (0);
+-    label__goto_done__break:;
+-    v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r)))));
+-    if (v_pos > self->private_impl.f_bitstream_wi) {
+-      v_ret = 2u;
+-    } else {
+-      self->private_impl.f_bitstream_ri = v_pos;
++  if (0u == (v_intermediate[1u] |
++      v_intermediate[2u] |
++      v_intermediate[3u] |
++      v_intermediate[4u] |
++      v_intermediate[5u] |
++      v_intermediate[6u] |
++      v_intermediate[7u])) {
++    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
++      return wuffs_base__make_empty_struct();
+     }
+-    v_r = o_0_v_r;
+-    iop_v_r = o_0_iop_v_r;
+-    io0_v_r = o_0_io0_v_r;
+-    io1_v_r = o_0_io1_v_r;
+-    io2_v_r = o_0_io2_v_r;
+-  }
+-  self->private_impl.f_bitstream_bits = v_bits;
+-  self->private_impl.f_bitstream_n_bits = v_n_bits;
+-  return v_ret;
+-}
+-
+-// -------- func jpeg.decoder.decode_mcu_progressive_dc_high_bits
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static uint32_t
+-wuffs_jpeg__decoder__decode_mcu_progressive_dc_high_bits(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__slice_u8 a_workbuf,
+-    uint32_t a_mx,
+-    uint32_t a_my) {
+-  uint32_t v_ret = 0;
+-  uint64_t v_bits = 0;
+-  uint32_t v_n_bits = 0;
+-  uint8_t v_csel = 0;
+-  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
+-  wuffs_base__io_buffer* v_r = &u_r;
+-  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint32_t v_pos = 0;
+-  uint8_t v_dc_h = 0;
+-  uint32_t v_dc_symbol = 0;
+-  uint32_t v_dc_ht_fast = 0;
+-  uint32_t v_dc_bl = 0;
+-  uint32_t v_dc_code = 0;
+-  uint32_t v_dc_blm1 = 0;
+-  uint32_t v_dc_ht_slow = 0;
+-  uint16_t v_dc_value = 0;
+-  uint16_t v_dc_extend = 0;
+-
+-  v_bits = self->private_impl.f_bitstream_bits;
+-  v_n_bits = self->private_impl.f_bitstream_n_bits;
+-  if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) {
+-    return 2u;
+-  }
+-  {
+-    wuffs_base__io_buffer* o_0_v_r = v_r;
+-    const uint8_t *o_0_iop_v_r = iop_v_r;
+-    const uint8_t *o_0_io0_v_r = io0_v_r;
+-    const uint8_t *o_0_io1_v_r = io1_v_r;
+-    const uint8_t *o_0_io2_v_r = io2_v_r;
+-    v_r = wuffs_base__io_reader__set(
+-        &u_r,
+-        &iop_v_r,
+-        &io0_v_r,
+-        &io1_v_r,
+-        &io2_v_r,
+-        wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
+-        self->private_impl.f_bitstream_ri,
+-        self->private_impl.f_bitstream_wi),
+-        ((uint64_t)(self->private_impl.f_bitstream_ri)));
+-    do {
+-      while (self->private_impl.f_mcu_current_block < self->private_impl.f_mcu_num_blocks) {
+-        if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
+-          v_ret = 1u;
+-          goto label__goto_done__break;
+-        }
+-        do {
+-          if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
+-            v_ret = 2u;
+-            goto label__goto_done__break;
+-          }
+-          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
+-          iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
+-          v_n_bits |= 56u;
+-          v_dc_h = self->private_impl.f_mcu_blocks_dc_hselector[self->private_impl.f_mcu_current_block];
+-          v_dc_ht_fast = ((uint32_t)(self->private_impl.f_huff_tables_fast[v_dc_h][(v_bits >> 56u)]));
+-          v_dc_bl = (v_dc_ht_fast >> 8u);
+-          if (v_n_bits >= v_dc_bl) {
+-            v_dc_symbol = (15u & v_dc_ht_fast);
+-            v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
+-            v_bits <<= (v_dc_bl & 63u);
+-            v_n_bits -= v_dc_bl;
+-          } else {
+-            v_dc_code = ((uint32_t)((v_bits >> 55u)));
+-            v_dc_blm1 = 8u;
+-            v_bits <<= 9u;
+-            v_n_bits -= 9u;
+-            while (true) {
+-              v_dc_ht_slow = self->private_impl.f_huff_tables_slow[v_dc_h][v_dc_blm1];
+-              if (v_dc_code < (v_dc_ht_slow >> 8u)) {
+-                v_dc_symbol = (15u & ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_dc_h][(255u & ((uint32_t)(v_dc_code + v_dc_ht_slow)))])));
+-                v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
+-                break;
+-              }
+-              v_dc_code = (((uint32_t)(v_dc_code << 1u)) | ((uint32_t)((v_bits >> 63u))));
+-              v_bits <<= 1u;
+-              v_n_bits -= 1u;
+-              v_dc_blm1 = ((v_dc_blm1 + 1u) & 15u);
+-              if (v_dc_blm1 == 0u) {
+-                v_dc_symbol = 0u;
+-                v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
+-                break;
+-              }
+-            }
+-          }
+-          v_dc_value = ((uint16_t)(((v_bits >> 32u) >> (32u - v_dc_symbol))));
+-          v_dc_value += (v_dc_extend & (((uint16_t)(wuffs_base__utility__sign_extend_rshift_u64(v_bits, 63u))) ^ 65535u));
+-          v_bits <<= v_dc_symbol;
+-          v_n_bits -= v_dc_symbol;
+-          v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[self->private_impl.f_mcu_current_block]];
+-          self->private_impl.f_mcu_previous_dc_values[v_csel] += v_dc_value;
+-          self->private_data.f_mcu_blocks[self->private_impl.f_mcu_current_block][0u] = ((uint16_t)(self->private_impl.f_mcu_previous_dc_values[v_csel] << self->private_impl.f_scan_al));
+-        } while (0);
+-        self->private_impl.f_mcu_current_block += 1u;
+-      }
+-      self->private_impl.f_mcu_current_block = 0u;
+-    } while (0);
+-    label__goto_done__break:;
+-    v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r)))));
+-    if (v_pos > self->private_impl.f_bitstream_wi) {
+-      v_ret = 2u;
+-    } else {
+-      self->private_impl.f_bitstream_ri = v_pos;
++    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[0u] + 16u)) >> 5u) & 1023u)];
++    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
++  } else {
++    v_in2 = v_intermediate[2u];
++    v_in6 = v_intermediate[6u];
++    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
++    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
++    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
++    v_in0 = v_intermediate[0u];
++    v_in4 = v_intermediate[4u];
++    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
++    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
++    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
++    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
++    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
++    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
++    v_in1 = v_intermediate[1u];
++    v_in3 = v_intermediate[3u];
++    v_in5 = v_intermediate[5u];
++    v_in7 = v_intermediate[7u];
++    v_ri51 = ((uint32_t)(v_in5 + v_in1));
++    v_ri53 = ((uint32_t)(v_in5 + v_in3));
++    v_ri71 = ((uint32_t)(v_in7 + v_in1));
++    v_ri73 = ((uint32_t)(v_in7 + v_in3));
++    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
++    v_rk1 = ((uint32_t)(v_in1 * 12299u));
++    v_rk3 = ((uint32_t)(v_in3 * 25172u));
++    v_rk5 = ((uint32_t)(v_in5 * 16819u));
++    v_rk7 = ((uint32_t)(v_in7 * 2446u));
++    v_ri51 *= 4294964100u;
++    v_ri53 *= 4294946301u;
++    v_ri71 *= 4294959923u;
++    v_ri73 *= 4294951227u;
++    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
++    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
++    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
++    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
++    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
++    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
++    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
++      return wuffs_base__make_empty_struct();
+     }
+-    v_r = o_0_v_r;
+-    iop_v_r = o_0_iop_v_r;
+-    io0_v_r = o_0_io0_v_r;
+-    io1_v_r = o_0_io1_v_r;
+-    io2_v_r = o_0_io2_v_r;
+-  }
+-  self->private_impl.f_bitstream_bits = v_bits;
+-  self->private_impl.f_bitstream_n_bits = v_n_bits;
+-  return v_ret;
+-}
+-
+-// -------- func jpeg.decoder.decode_mcu_progressive_dc_low_bit
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static uint32_t
+-wuffs_jpeg__decoder__decode_mcu_progressive_dc_low_bit(
+-    wuffs_jpeg__decoder* self,
+-    wuffs_base__slice_u8 a_workbuf,
+-    uint32_t a_mx,
+-    uint32_t a_my) {
+-  uint32_t v_ret = 0;
+-  uint64_t v_bits = 0;
+-  uint32_t v_n_bits = 0;
+-  uint16_t v_one_lshift_scan_al = 0;
+-  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
+-  wuffs_base__io_buffer* v_r = &u_r;
+-  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint32_t v_pos = 0;
+-
+-  v_bits = self->private_impl.f_bitstream_bits;
+-  v_n_bits = self->private_impl.f_bitstream_n_bits;
+-  v_one_lshift_scan_al = (((uint16_t)(1u)) << self->private_impl.f_scan_al);
+-  if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) {
+-    return 2u;
++    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+   }
+-  {
+-    wuffs_base__io_buffer* o_0_v_r = v_r;
+-    const uint8_t *o_0_iop_v_r = iop_v_r;
+-    const uint8_t *o_0_io0_v_r = io0_v_r;
+-    const uint8_t *o_0_io1_v_r = io1_v_r;
+-    const uint8_t *o_0_io2_v_r = io2_v_r;
+-    v_r = wuffs_base__io_reader__set(
+-        &u_r,
+-        &iop_v_r,
+-        &io0_v_r,
+-        &io1_v_r,
+-        &io2_v_r,
+-        wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
+-        self->private_impl.f_bitstream_ri,
+-        self->private_impl.f_bitstream_wi),
+-        ((uint64_t)(self->private_impl.f_bitstream_ri)));
+-    do {
+-      while (self->private_impl.f_mcu_current_block < self->private_impl.f_mcu_num_blocks) {
+-        if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
+-          v_ret = 1u;
+-          goto label__goto_done__break;
+-        }
+-        do {
+-          if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
+-            v_ret = 2u;
+-            goto label__goto_done__break;
+-          }
+-          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
+-          iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
+-          v_n_bits |= 56u;
+-          if ((v_bits >> 63u) != 0u) {
+-            self->private_data.f_mcu_blocks[self->private_impl.f_mcu_current_block][0u] |= v_one_lshift_scan_al;
+-          }
+-          v_bits <<= 1u;
+-          v_n_bits -= 1u;
+-        } while (0);
+-        self->private_impl.f_mcu_current_block += 1u;
+-      }
+-      self->private_impl.f_mcu_current_block = 0u;
+-    } while (0);
+-    label__goto_done__break:;
+-    v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r)))));
+-    if (v_pos > self->private_impl.f_bitstream_wi) {
+-      v_ret = 2u;
+-    } else {
+-      self->private_impl.f_bitstream_ri = v_pos;
++  if (0u == (v_intermediate[9u] |
++      v_intermediate[10u] |
++      v_intermediate[11u] |
++      v_intermediate[12u] |
++      v_intermediate[13u] |
++      v_intermediate[14u] |
++      v_intermediate[15u])) {
++    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
++      return wuffs_base__make_empty_struct();
+     }
+-    v_r = o_0_v_r;
+-    iop_v_r = o_0_iop_v_r;
+-    io0_v_r = o_0_io0_v_r;
+-    io1_v_r = o_0_io1_v_r;
+-    io2_v_r = o_0_io2_v_r;
+-  }
+-  self->private_impl.f_bitstream_bits = v_bits;
+-  self->private_impl.f_bitstream_n_bits = v_n_bits;
+-  return v_ret;
+-}
+-
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JPEG)
+-
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JSON)
+-
+-// ---------------- Status Codes Implementations
+-
+-const char wuffs_json__error__bad_c0_control_code[] = "#json: bad C0 control code";
+-const char wuffs_json__error__bad_utf_8[] = "#json: bad UTF-8";
+-const char wuffs_json__error__bad_backslash_escape[] = "#json: bad backslash-escape";
+-const char wuffs_json__error__bad_input[] = "#json: bad input";
+-const char wuffs_json__error__bad_new_line_in_a_string[] = "#json: bad new-line in a string";
+-const char wuffs_json__error__bad_quirk_combination[] = "#json: bad quirk combination";
+-const char wuffs_json__error__unsupported_number_length[] = "#json: unsupported number length";
+-const char wuffs_json__error__unsupported_recursion_depth[] = "#json: unsupported recursion depth";
+-const char wuffs_json__error__internal_error_inconsistent_i_o[] = "#json: internal error: inconsistent I/O";
+-
+-// ---------------- Private Consts
+-
+-#define WUFFS_JSON__DECODER_NUMBER_LENGTH_MAX_INCL 99
+-
+-static const uint8_t
+-WUFFS_JSON__LUT_BACKSLASHES[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 3, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 162, 0, 0, 0, 0, 5,
+-  0, 0, 0, 0, 0, 0, 0, 175,
+-  7, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 4,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 220, 0, 0, 0,
+-  0, 1, 136, 0, 0, 2, 140, 0,
+-  0, 0, 0, 0, 0, 0, 138, 0,
+-  0, 0, 141, 0, 137, 0, 6, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-};
+-
+-static const uint8_t
+-WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_QUIRKS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  0, 1, 3, 4, 5, 6, 7, 10,
+-};
+-
+-static const uint8_t
+-WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_CHARS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  0, 7, 27, 10, 63, 39, 11, 0,
+-};
+-
+-static const uint8_t
+-WUFFS_JSON__LUT_CHARS[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  128, 129, 130, 131, 132, 133, 134, 135,
+-  136, 137, 138, 139, 140, 141, 142, 143,
+-  144, 145, 146, 147, 148, 149, 150, 151,
+-  152, 153, 154, 155, 156, 157, 158, 159,
+-  0, 0, 1, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 2, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  16, 16, 16, 16, 16, 16, 16, 16,
+-  16, 16, 16, 16, 16, 16, 16, 16,
+-  16, 16, 16, 16, 16, 16, 16, 16,
+-  16, 16, 16, 16, 16, 16, 16, 16,
+-  16, 16, 16, 16, 16, 16, 16, 16,
+-  16, 16, 16, 16, 16, 16, 16, 16,
+-  16, 16, 16, 16, 16, 16, 16, 16,
+-  16, 16, 16, 16, 16, 16, 16, 16,
+-  32, 32, 3, 3, 3, 3, 3, 3,
+-  3, 3, 3, 3, 3, 3, 3, 3,
+-  3, 3, 3, 3, 3, 3, 3, 3,
+-  3, 3, 3, 3, 3, 3, 3, 3,
+-  4, 4, 4, 4, 4, 4, 4, 4,
+-  4, 4, 4, 4, 4, 4, 4, 4,
+-  5, 5, 5, 5, 5, 32, 32, 32,
+-  32, 32, 32, 32, 32, 32, 32, 32,
+-};
+-
+-#define WUFFS_JSON__CLASS_WHITESPACE 0
+-
+-#define WUFFS_JSON__CLASS_STRING 1
+-
+-#define WUFFS_JSON__CLASS_COMMA 2
+-
+-#define WUFFS_JSON__CLASS_COLON 3
+-
+-#define WUFFS_JSON__CLASS_NUMBER 4
+-
+-#define WUFFS_JSON__CLASS_OPEN_CURLY_BRACE 5
+-
+-#define WUFFS_JSON__CLASS_CLOSE_CURLY_BRACE 6
+-
+-#define WUFFS_JSON__CLASS_OPEN_SQUARE_BRACKET 7
+-
+-#define WUFFS_JSON__CLASS_CLOSE_SQUARE_BRACKET 8
+-
+-#define WUFFS_JSON__CLASS_FALSE 9
+-
+-#define WUFFS_JSON__CLASS_TRUE 10
+-
+-#define WUFFS_JSON__CLASS_NULL_NAN_INF 11
+-
+-#define WUFFS_JSON__CLASS_COMMENT 12
+-
+-#define WUFFS_JSON__EXPECT_VALUE 7858
+-
+-#define WUFFS_JSON__EXPECT_NON_STRING_VALUE 7856
+-
+-#define WUFFS_JSON__EXPECT_STRING 4098
+-
+-#define WUFFS_JSON__EXPECT_COMMA 4100
+-
+-#define WUFFS_JSON__EXPECT_COLON 4104
+-
+-#define WUFFS_JSON__EXPECT_NUMBER 4112
+-
+-#define WUFFS_JSON__EXPECT_CLOSE_CURLY_BRACE 4160
+-
+-#define WUFFS_JSON__EXPECT_CLOSE_SQUARE_BRACKET 4352
+-
+-static const uint8_t
+-WUFFS_JSON__LUT_CLASSES[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  15, 15, 15, 15, 15, 15, 15, 15,
+-  15, 0, 0, 15, 15, 0, 15, 15,
+-  15, 15, 15, 15, 15, 15, 15, 15,
+-  15, 15, 15, 15, 15, 15, 15, 15,
+-  0, 15, 1, 15, 15, 15, 15, 15,
+-  15, 15, 15, 11, 2, 4, 15, 12,
+-  4, 4, 4, 4, 4, 4, 4, 4,
+-  4, 4, 3, 15, 15, 15, 15, 15,
+-  15, 15, 15, 15, 15, 15, 15, 15,
+-  15, 11, 15, 15, 15, 15, 11, 15,
+-  15, 15, 15, 15, 15, 15, 15, 15,
+-  15, 15, 15, 7, 15, 8, 15, 15,
+-  15, 15, 15, 15, 15, 15, 9, 15,
+-  15, 11, 15, 15, 15, 15, 11, 15,
+-  15, 15, 15, 15, 10, 15, 15, 15,
+-  15, 15, 15, 5, 15, 6, 15, 15,
+-  15, 15, 15, 15, 15, 15, 15, 15,
+-  15, 15, 15, 15, 15, 15, 15, 15,
+-  15, 15, 15, 15, 15, 15, 15, 15,
+-  15, 15, 15, 15, 15, 15, 15, 15,
+-  15, 15, 15, 15, 15, 15, 15, 15,
+-  15, 15, 15, 15, 15, 15, 15, 15,
+-  15, 15, 15, 15, 15, 15, 15, 15,
+-  15, 15, 15, 15, 15, 15, 15, 15,
+-  15, 15, 15, 15, 15, 15, 15, 15,
+-  15, 15, 15, 15, 15, 15, 15, 15,
+-  15, 15, 15, 15, 15, 15, 15, 15,
+-  15, 15, 15, 15, 15, 15, 15, 15,
+-  15, 15, 15, 15, 15, 15, 15, 15,
+-  15, 15, 15, 15, 15, 15, 15, 15,
+-  15, 15, 15, 15, 15, 15, 15, 15,
+-  15, 15, 15, 15, 15, 15, 15, 15,
+-};
+-
+-static const uint8_t
+-WUFFS_JSON__LUT_DECIMAL_DIGITS[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  128, 129, 130, 131, 132, 133, 134, 135,
+-  136, 137, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-};
+-
+-static const uint8_t
+-WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  128, 129, 130, 131, 132, 133, 134, 135,
+-  136, 137, 0, 0, 0, 0, 0, 0,
+-  0, 138, 139, 140, 141, 142, 143, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 138, 139, 140, 141, 142, 143, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-};
+-
+-#define WUFFS_JSON__QUIRKS_BASE 1225364480
+-
+-#define WUFFS_JSON__QUIRKS_COUNT 21
+-
+-// ---------------- Private Initializer Prototypes
+-
+-// ---------------- Private Function Prototypes
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static uint32_t
+-wuffs_json__decoder__decode_number(
+-    wuffs_json__decoder* self,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static uint32_t
+-wuffs_json__decoder__decode_digits(
+-    wuffs_json__decoder* self,
+-    wuffs_base__io_buffer* a_src,
+-    uint32_t a_n);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_json__decoder__decode_leading(
+-    wuffs_json__decoder* self,
+-    wuffs_base__token_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_json__decoder__decode_comment(
+-    wuffs_json__decoder* self,
+-    wuffs_base__token_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_json__decoder__decode_inf_nan(
+-    wuffs_json__decoder* self,
+-    wuffs_base__token_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_json__decoder__decode_trailer(
+-    wuffs_json__decoder* self,
+-    wuffs_base__token_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src);
+-
+-// ---------------- VTables
+-
+-const wuffs_base__token_decoder__func_ptrs
+-wuffs_json__decoder__func_ptrs_for__wuffs_base__token_decoder = {
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__token_buffer*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__slice_u8))(&wuffs_json__decoder__decode_tokens),
+-  (uint64_t(*)(const void*,
+-      uint32_t))(&wuffs_json__decoder__get_quirk),
+-  (uint64_t(*)(const void*))(&wuffs_json__decoder__history_retain_length),
+-  (wuffs_base__status(*)(void*,
+-      uint32_t,
+-      uint64_t))(&wuffs_json__decoder__set_quirk),
+-  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_json__decoder__workbuf_len),
+-};
+-
+-// ---------------- Initializer Implementations
+-
+-wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_json__decoder__initialize(
+-    wuffs_json__decoder* self,
+-    size_t sizeof_star_self,
+-    uint64_t wuffs_version,
+-    uint32_t options){
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (sizeof(*self) != sizeof_star_self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
+-  }
+-  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
+-      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[8u] + 16u)) >> 5u) & 1023u)];
++    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
++  } else {
++    v_in2 = v_intermediate[10u];
++    v_in6 = v_intermediate[14u];
++    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
++    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
++    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
++    v_in0 = v_intermediate[8u];
++    v_in4 = v_intermediate[12u];
++    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
++    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
++    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
++    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
++    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
++    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
++    v_in1 = v_intermediate[9u];
++    v_in3 = v_intermediate[11u];
++    v_in5 = v_intermediate[13u];
++    v_in7 = v_intermediate[15u];
++    v_ri51 = ((uint32_t)(v_in5 + v_in1));
++    v_ri53 = ((uint32_t)(v_in5 + v_in3));
++    v_ri71 = ((uint32_t)(v_in7 + v_in1));
++    v_ri73 = ((uint32_t)(v_in7 + v_in3));
++    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
++    v_rk1 = ((uint32_t)(v_in1 * 12299u));
++    v_rk3 = ((uint32_t)(v_in3 * 25172u));
++    v_rk5 = ((uint32_t)(v_in5 * 16819u));
++    v_rk7 = ((uint32_t)(v_in7 * 2446u));
++    v_ri51 *= 4294964100u;
++    v_ri53 *= 4294946301u;
++    v_ri71 *= 4294959923u;
++    v_ri73 *= 4294951227u;
++    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
++    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
++    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
++    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
++    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
++    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
++    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
++      return wuffs_base__make_empty_struct();
++    }
++    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+   }
+-
+-  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
+-    // The whole point of this if-check is to detect an uninitialized *self.
+-    // We disable the warning on GCC. Clang-5.0 does not have this warning.
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+-#endif
+-    if (self->private_impl.magic != 0) {
+-      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++  if (0u == (v_intermediate[17u] |
++      v_intermediate[18u] |
++      v_intermediate[19u] |
++      v_intermediate[20u] |
++      v_intermediate[21u] |
++      v_intermediate[22u] |
++      v_intermediate[23u])) {
++    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
++      return wuffs_base__make_empty_struct();
+     }
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
++    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[16u] + 16u)) >> 5u) & 1023u)];
++    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+   } else {
+-    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
+-      memset(self, 0, sizeof(*self));
+-      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
+-    } else {
+-      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++    v_in2 = v_intermediate[18u];
++    v_in6 = v_intermediate[22u];
++    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
++    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
++    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
++    v_in0 = v_intermediate[16u];
++    v_in4 = v_intermediate[20u];
++    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
++    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
++    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
++    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
++    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
++    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
++    v_in1 = v_intermediate[17u];
++    v_in3 = v_intermediate[19u];
++    v_in5 = v_intermediate[21u];
++    v_in7 = v_intermediate[23u];
++    v_ri51 = ((uint32_t)(v_in5 + v_in1));
++    v_ri53 = ((uint32_t)(v_in5 + v_in3));
++    v_ri71 = ((uint32_t)(v_in7 + v_in1));
++    v_ri73 = ((uint32_t)(v_in7 + v_in3));
++    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
++    v_rk1 = ((uint32_t)(v_in1 * 12299u));
++    v_rk3 = ((uint32_t)(v_in3 * 25172u));
++    v_rk5 = ((uint32_t)(v_in5 * 16819u));
++    v_rk7 = ((uint32_t)(v_in7 * 2446u));
++    v_ri51 *= 4294964100u;
++    v_ri53 *= 4294946301u;
++    v_ri71 *= 4294959923u;
++    v_ri73 *= 4294951227u;
++    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
++    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
++    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
++    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
++    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
++    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
++    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
++      return wuffs_base__make_empty_struct();
+     }
++    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+   }
+-
+-  self->private_impl.magic = WUFFS_BASE__MAGIC;
+-  self->private_impl.vtable_for__wuffs_base__token_decoder.vtable_name =
+-      wuffs_base__token_decoder__vtable_name;
+-  self->private_impl.vtable_for__wuffs_base__token_decoder.function_pointers =
+-      (const void*)(&wuffs_json__decoder__func_ptrs_for__wuffs_base__token_decoder);
+-  return wuffs_base__make_status(NULL);
+-}
+-
+-wuffs_json__decoder*
+-wuffs_json__decoder__alloc(void) {
+-  wuffs_json__decoder* x =
+-      (wuffs_json__decoder*)(calloc(sizeof(wuffs_json__decoder), 1));
+-  if (!x) {
+-    return NULL;
+-  }
+-  if (wuffs_json__decoder__initialize(
+-      x, sizeof(wuffs_json__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
+-    free(x);
+-    return NULL;
+-  }
+-  return x;
+-}
+-
+-size_t
+-sizeof__wuffs_json__decoder(void) {
+-  return sizeof(wuffs_json__decoder);
+-}
+-
+-// ---------------- Function Implementations
+-
+-// -------- func json.decoder.get_quirk
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_json__decoder__get_quirk(
+-    const wuffs_json__decoder* self,
+-    uint32_t a_key) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
+-
+-  uint32_t v_key = 0;
+-
+-  if (a_key >= 1225364480u) {
+-    v_key = (a_key - 1225364480u);
+-    if (v_key < 21u) {
+-      if (self->private_impl.f_quirks[v_key]) {
+-        return 1u;
+-      }
++  if (0u == (v_intermediate[25u] |
++      v_intermediate[26u] |
++      v_intermediate[27u] |
++      v_intermediate[28u] |
++      v_intermediate[29u] |
++      v_intermediate[30u] |
++      v_intermediate[31u])) {
++    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
++      return wuffs_base__make_empty_struct();
+     }
+-  }
+-  return 0u;
+-}
+-
+-// -------- func json.decoder.set_quirk
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_json__decoder__set_quirk(
+-    wuffs_json__decoder* self,
+-    uint32_t a_key,
+-    uint64_t a_value) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-
+-  if (a_key >= 1225364480u) {
+-    a_key -= 1225364480u;
+-    if (a_key < 21u) {
+-      self->private_impl.f_quirks[a_key] = (a_value > 0u);
+-      return wuffs_base__make_status(NULL);
++    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[24u] + 16u)) >> 5u) & 1023u)];
++    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
++  } else {
++    v_in2 = v_intermediate[26u];
++    v_in6 = v_intermediate[30u];
++    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
++    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
++    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
++    v_in0 = v_intermediate[24u];
++    v_in4 = v_intermediate[28u];
++    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
++    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
++    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
++    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
++    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
++    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
++    v_in1 = v_intermediate[25u];
++    v_in3 = v_intermediate[27u];
++    v_in5 = v_intermediate[29u];
++    v_in7 = v_intermediate[31u];
++    v_ri51 = ((uint32_t)(v_in5 + v_in1));
++    v_ri53 = ((uint32_t)(v_in5 + v_in3));
++    v_ri71 = ((uint32_t)(v_in7 + v_in1));
++    v_ri73 = ((uint32_t)(v_in7 + v_in3));
++    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
++    v_rk1 = ((uint32_t)(v_in1 * 12299u));
++    v_rk3 = ((uint32_t)(v_in3 * 25172u));
++    v_rk5 = ((uint32_t)(v_in5 * 16819u));
++    v_rk7 = ((uint32_t)(v_in7 * 2446u));
++    v_ri51 *= 4294964100u;
++    v_ri53 *= 4294946301u;
++    v_ri71 *= 4294959923u;
++    v_ri73 *= 4294951227u;
++    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
++    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
++    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
++    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
++    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
++    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
++    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
++      return wuffs_base__make_empty_struct();
+     }
++    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+   }
+-  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
+-}
+-
+-// -------- func json.decoder.history_retain_length
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_json__decoder__history_retain_length(
+-    const wuffs_json__decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
++  if (0u == (v_intermediate[33u] |
++      v_intermediate[34u] |
++      v_intermediate[35u] |
++      v_intermediate[36u] |
++      v_intermediate[37u] |
++      v_intermediate[38u] |
++      v_intermediate[39u])) {
++    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
++      return wuffs_base__make_empty_struct();
++    }
++    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[32u] + 16u)) >> 5u) & 1023u)];
++    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
++  } else {
++    v_in2 = v_intermediate[34u];
++    v_in6 = v_intermediate[38u];
++    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
++    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
++    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
++    v_in0 = v_intermediate[32u];
++    v_in4 = v_intermediate[36u];
++    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
++    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
++    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
++    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
++    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
++    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
++    v_in1 = v_intermediate[33u];
++    v_in3 = v_intermediate[35u];
++    v_in5 = v_intermediate[37u];
++    v_in7 = v_intermediate[39u];
++    v_ri51 = ((uint32_t)(v_in5 + v_in1));
++    v_ri53 = ((uint32_t)(v_in5 + v_in3));
++    v_ri71 = ((uint32_t)(v_in7 + v_in1));
++    v_ri73 = ((uint32_t)(v_in7 + v_in3));
++    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
++    v_rk1 = ((uint32_t)(v_in1 * 12299u));
++    v_rk3 = ((uint32_t)(v_in3 * 25172u));
++    v_rk5 = ((uint32_t)(v_in5 * 16819u));
++    v_rk7 = ((uint32_t)(v_in7 * 2446u));
++    v_ri51 *= 4294964100u;
++    v_ri53 *= 4294946301u;
++    v_ri71 *= 4294959923u;
++    v_ri73 *= 4294951227u;
++    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
++    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
++    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
++    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
++    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
++    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
++    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
++      return wuffs_base__make_empty_struct();
++    }
++    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+   }
+-
+-  return 0u;
+-}
+-
+-// -------- func json.decoder.workbuf_len
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_json__decoder__workbuf_len(
+-    const wuffs_json__decoder* self) {
+-  if (!self) {
+-    return wuffs_base__utility__empty_range_ii_u64();
++  if (0u == (v_intermediate[41u] |
++      v_intermediate[42u] |
++      v_intermediate[43u] |
++      v_intermediate[44u] |
++      v_intermediate[45u] |
++      v_intermediate[46u] |
++      v_intermediate[47u])) {
++    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
++      return wuffs_base__make_empty_struct();
++    }
++    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[40u] + 16u)) >> 5u) & 1023u)];
++    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
++  } else {
++    v_in2 = v_intermediate[42u];
++    v_in6 = v_intermediate[46u];
++    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
++    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
++    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
++    v_in0 = v_intermediate[40u];
++    v_in4 = v_intermediate[44u];
++    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
++    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
++    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
++    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
++    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
++    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
++    v_in1 = v_intermediate[41u];
++    v_in3 = v_intermediate[43u];
++    v_in5 = v_intermediate[45u];
++    v_in7 = v_intermediate[47u];
++    v_ri51 = ((uint32_t)(v_in5 + v_in1));
++    v_ri53 = ((uint32_t)(v_in5 + v_in3));
++    v_ri71 = ((uint32_t)(v_in7 + v_in1));
++    v_ri73 = ((uint32_t)(v_in7 + v_in3));
++    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
++    v_rk1 = ((uint32_t)(v_in1 * 12299u));
++    v_rk3 = ((uint32_t)(v_in3 * 25172u));
++    v_rk5 = ((uint32_t)(v_in5 * 16819u));
++    v_rk7 = ((uint32_t)(v_in7 * 2446u));
++    v_ri51 *= 4294964100u;
++    v_ri53 *= 4294946301u;
++    v_ri71 *= 4294959923u;
++    v_ri73 *= 4294951227u;
++    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
++    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
++    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
++    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
++    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
++    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
++    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
++      return wuffs_base__make_empty_struct();
++    }
++    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+   }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_range_ii_u64();
++  if (0u == (v_intermediate[49u] |
++      v_intermediate[50u] |
++      v_intermediate[51u] |
++      v_intermediate[52u] |
++      v_intermediate[53u] |
++      v_intermediate[54u] |
++      v_intermediate[55u])) {
++    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
++      return wuffs_base__make_empty_struct();
++    }
++    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[48u] + 16u)) >> 5u) & 1023u)];
++    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
++  } else {
++    v_in2 = v_intermediate[50u];
++    v_in6 = v_intermediate[54u];
++    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
++    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
++    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
++    v_in0 = v_intermediate[48u];
++    v_in4 = v_intermediate[52u];
++    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
++    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
++    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
++    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
++    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
++    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
++    v_in1 = v_intermediate[49u];
++    v_in3 = v_intermediate[51u];
++    v_in5 = v_intermediate[53u];
++    v_in7 = v_intermediate[55u];
++    v_ri51 = ((uint32_t)(v_in5 + v_in1));
++    v_ri53 = ((uint32_t)(v_in5 + v_in3));
++    v_ri71 = ((uint32_t)(v_in7 + v_in1));
++    v_ri73 = ((uint32_t)(v_in7 + v_in3));
++    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
++    v_rk1 = ((uint32_t)(v_in1 * 12299u));
++    v_rk3 = ((uint32_t)(v_in3 * 25172u));
++    v_rk5 = ((uint32_t)(v_in5 * 16819u));
++    v_rk7 = ((uint32_t)(v_in7 * 2446u));
++    v_ri51 *= 4294964100u;
++    v_ri53 *= 4294946301u;
++    v_ri71 *= 4294959923u;
++    v_ri73 *= 4294951227u;
++    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
++    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
++    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
++    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
++    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
++    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
++    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
++      return wuffs_base__make_empty_struct();
++    }
++    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
+   }
+-
+-  return wuffs_base__utility__empty_range_ii_u64();
++  if (0u == (v_intermediate[57u] |
++      v_intermediate[58u] |
++      v_intermediate[59u] |
++      v_intermediate[60u] |
++      v_intermediate[61u] |
++      v_intermediate[62u] |
++      v_intermediate[63u])) {
++    if (8u > ((uint64_t)(a_dst_buffer.len))) {
++      return wuffs_base__make_empty_struct();
++    }
++    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[56u] + 16u)) >> 5u) & 1023u)];
++    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
++    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
++  } else {
++    v_in2 = v_intermediate[58u];
++    v_in6 = v_intermediate[62u];
++    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
++    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
++    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
++    v_in0 = v_intermediate[56u];
++    v_in4 = v_intermediate[60u];
++    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
++    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
++    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
++    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
++    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
++    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
++    v_in1 = v_intermediate[57u];
++    v_in3 = v_intermediate[59u];
++    v_in5 = v_intermediate[61u];
++    v_in7 = v_intermediate[63u];
++    v_ri51 = ((uint32_t)(v_in5 + v_in1));
++    v_ri53 = ((uint32_t)(v_in5 + v_in3));
++    v_ri71 = ((uint32_t)(v_in7 + v_in1));
++    v_ri73 = ((uint32_t)(v_in7 + v_in3));
++    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
++    v_rk1 = ((uint32_t)(v_in1 * 12299u));
++    v_rk3 = ((uint32_t)(v_in3 * 25172u));
++    v_rk5 = ((uint32_t)(v_in5 * 16819u));
++    v_rk7 = ((uint32_t)(v_in7 * 2446u));
++    v_ri51 *= 4294964100u;
++    v_ri53 *= 4294946301u;
++    v_ri71 *= 4294959923u;
++    v_ri73 *= 4294951227u;
++    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
++    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
++    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
++    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
++    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
++    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
++    if (8u > ((uint64_t)(a_dst_buffer.len))) {
++      return wuffs_base__make_empty_struct();
++    }
++    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
++    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
++  }
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-// -------- func json.decoder.decode_tokens
++// ‼ WUFFS MULTI-FILE SECTION +x86_avx2
++// -------- func jpeg.decoder.decode_idct_x86_avx2
+ 
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
++WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_json__decoder__decode_tokens(
+-    wuffs_json__decoder* self,
+-    wuffs_base__token_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__slice_u8 a_workbuf) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-  if (!a_dst || !a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 1)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+-  }
+-  self->private_impl.active_coroutine = 0;
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  uint32_t v_vminor = 0;
+-  uint32_t v_number_length = 0;
+-  uint32_t v_number_status = 0;
+-  uint32_t v_string_length = 0;
+-  uint32_t v_whitespace_length = 0;
+-  uint32_t v_depth = 0;
+-  uint32_t v_stack_byte = 0;
+-  uint32_t v_stack_bit = 0;
+-  uint32_t v_match = 0;
+-  uint32_t v_c4 = 0;
+-  uint8_t v_c = 0;
+-  uint8_t v_backslash = 0;
+-  uint8_t v_char = 0;
+-  uint8_t v_class = 0;
+-  uint32_t v_multi_byte_utf8 = 0;
+-  uint8_t v_backslash_x_ok = 0;
+-  uint8_t v_backslash_x_value = 0;
+-  uint32_t v_backslash_x_string = 0;
+-  uint8_t v_uni4_ok = 0;
+-  uint64_t v_uni4_string = 0;
+-  uint32_t v_uni4_value = 0;
+-  uint32_t v_uni4_high_surrogate = 0;
+-  uint8_t v_uni8_ok = 0;
+-  uint64_t v_uni8_string = 0;
+-  uint32_t v_uni8_value = 0;
+-  uint32_t v_expect = 0;
+-  uint32_t v_expect_after_value = 0;
+-
+-  wuffs_base__token* iop_a_dst = NULL;
+-  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_dst && a_dst->data.ptr) {
+-    io0_a_dst = a_dst->data.ptr;
+-    io1_a_dst = io0_a_dst + a_dst->meta.wi;
+-    iop_a_dst = io1_a_dst;
+-    io2_a_dst = io0_a_dst + a_dst->data.len;
+-    if (a_dst->meta.closed) {
+-      io2_a_dst = iop_a_dst;
+-    }
+-  }
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
++static wuffs_base__empty_struct
++wuffs_jpeg__decoder__decode_idct_x86_avx2(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__slice_u8 a_dst_buffer,
++    uint64_t a_dst_stride,
++    uint32_t a_q) {
++  __m256i v_k_0000 = {0};
++  __m256i v_k_8080 = {0};
++  __m256i v_k_0000_0002 = {0};
++  __m256i v_k_0001_FFFF = {0};
++  __m256i v_k_0400_0000 = {0};
++  __m256i v_k_29CF_1151_D630_1151 = {0};
++  __m256i v_k_E333_133E_ADFD_1051 = {0};
++  __m256i v_k_E6DC_25A1_1925_25A1 = {0};
++  __m256i v_k_ECC1_E333_EFB0_ADFD = {0};
++  __m128i v_az_coeffs = {0};
++  __m256i v_az_ah00 = {0};
++  __m256i v_az_ad00 = {0};
++  __m256i v_az_eh00 = {0};
++  __m256i v_az_adeh = {0};
++  __m256i v_rows01 = {0};
++  __m256i v_rows23 = {0};
++  __m256i v_rows45 = {0};
++  __m256i v_rows67 = {0};
++  __m256i v_quants01 = {0};
++  __m256i v_quants23 = {0};
++  __m256i v_quants45 = {0};
++  __m256i v_quants67 = {0};
++  __m256i v_rows04 = {0};
++  __m256i v_rows31 = {0};
++  __m256i v_rows26 = {0};
++  __m256i v_rows75 = {0};
++  __m256i v_fp_rows62 = {0};
++  __m256i v_fp_bq2662ad = {0};
++  __m256i v_fp_bq2662eh = {0};
++  __m256i v_fp_cb26ad = {0};
++  __m256i v_fp_cb26eh = {0};
++  __m256i v_fp_rows40pos = {0};
++  __m256i v_fp_rows04neg = {0};
++  __m256i v_fp_rows0pm4 = {0};
++  __m256i v_fp_ccpmad = {0};
++  __m256i v_fp_ccpmeh = {0};
++  __m256i v_fp_cd01ad = {0};
++  __m256i v_fp_cd01eh = {0};
++  __m256i v_fp_cd32ad = {0};
++  __m256i v_fp_cd32eh = {0};
++  __m256i v_fp_sums7351 = {0};
++  __m256i v_fp_sums5173 = {0};
++  __m256i v_fp_ci73515173ad = {0};
++  __m256i v_fp_ci73515173eh = {0};
++  __m256i v_fp_cl7351ad = {0};
++  __m256i v_fp_cl7351eh = {0};
++  __m256i v_fp_rows13 = {0};
++  __m256i v_fp_bq7153ad = {0};
++  __m256i v_fp_bq7153eh = {0};
++  __m256i v_fp_ck75ad = {0};
++  __m256i v_fp_ck75eh = {0};
++  __m256i v_fp_cl5173ad = {0};
++  __m256i v_fp_cl5173eh = {0};
++  __m256i v_fp_ck13ad = {0};
++  __m256i v_fp_ck13eh = {0};
++  __m256i v_intermediate01ad = {0};
++  __m256i v_intermediate01eh = {0};
++  __m256i v_intermediate01 = {0};
++  __m256i v_intermediate32ad = {0};
++  __m256i v_intermediate32eh = {0};
++  __m256i v_intermediate32 = {0};
++  __m256i v_intermediate45ad = {0};
++  __m256i v_intermediate45eh = {0};
++  __m256i v_intermediate45 = {0};
++  __m256i v_intermediate76ad = {0};
++  __m256i v_intermediate76eh = {0};
++  __m256i v_intermediate76 = {0};
++  __m256i v_ita0a1e0e1 = {0};
++  __m256i v_ita2a3e2e3 = {0};
++  __m256i v_ita4a5e4e5 = {0};
++  __m256i v_ita6a7e6e7 = {0};
++  __m256i v_ita0c0e0g0 = {0};
++  __m256i v_ita1c1e1g1 = {0};
++  __m256i v_ita4c4e4g4 = {0};
++  __m256i v_ita5c5e5g5 = {0};
++  __m256i v_ita0b0e0f0 = {0};
++  __m256i v_ita4b4e4f4 = {0};
++  __m256i v_itc0d0g0h0 = {0};
++  __m256i v_itc4d4g4h4 = {0};
++  __m256i v_intermediateae = {0};
++  __m256i v_intermediatebf = {0};
++  __m256i v_intermediatecg = {0};
++  __m256i v_intermediatedh = {0};
++  __m256i v_intermediatedb = {0};
++  __m256i v_intermediatehf = {0};
++  __m256i v_sp_cols62 = {0};
++  __m256i v_sp_bq2662ad = {0};
++  __m256i v_sp_bq2662eh = {0};
++  __m256i v_sp_rb26ad = {0};
++  __m256i v_sp_rb26eh = {0};
++  __m256i v_sp_cols40pos = {0};
++  __m256i v_sp_cols04neg = {0};
++  __m256i v_sp_cols0pm4 = {0};
++  __m256i v_sp_rcpmad = {0};
++  __m256i v_sp_rcpmeh = {0};
++  __m256i v_sp_rd01ad = {0};
++  __m256i v_sp_rd01eh = {0};
++  __m256i v_sp_rd32ad = {0};
++  __m256i v_sp_rd32eh = {0};
++  __m256i v_sp_sums7351 = {0};
++  __m256i v_sp_sums5173 = {0};
++  __m256i v_sp_ri73515173ad = {0};
++  __m256i v_sp_ri73515173eh = {0};
++  __m256i v_sp_rl7351ad = {0};
++  __m256i v_sp_rl7351eh = {0};
++  __m256i v_sp_cols13 = {0};
++  __m256i v_sp_bq7153ad = {0};
++  __m256i v_sp_bq7153eh = {0};
++  __m256i v_sp_rk75ad = {0};
++  __m256i v_sp_rk75eh = {0};
++  __m256i v_sp_rl5173ad = {0};
++  __m256i v_sp_rl5173eh = {0};
++  __m256i v_sp_rk13ad = {0};
++  __m256i v_sp_rk13eh = {0};
++  __m256i v_final01ad = {0};
++  __m256i v_final01eh = {0};
++  __m256i v_final01 = {0};
++  __m256i v_final32ad = {0};
++  __m256i v_final32eh = {0};
++  __m256i v_final32 = {0};
++  __m256i v_final45ad = {0};
++  __m256i v_final45eh = {0};
++  __m256i v_final45 = {0};
++  __m256i v_final76ad = {0};
++  __m256i v_final76eh = {0};
++  __m256i v_final76 = {0};
++  __m256i v_fta0a1e0e1 = {0};
++  __m256i v_fta2a3e2e3 = {0};
++  __m256i v_fta4a5e4e5 = {0};
++  __m256i v_fta6a7e6e7 = {0};
++  __m256i v_fta0c0e0g0 = {0};
++  __m256i v_fta1c1e1g1 = {0};
++  __m256i v_fta4c4e4g4 = {0};
++  __m256i v_fta5c5e5g5 = {0};
++  __m256i v_fta0b0e0f0 = {0};
++  __m256i v_ftc0d0g0h0 = {0};
++  __m256i v_fta4b4e4f4 = {0};
++  __m256i v_ftc4d4g4h4 = {0};
++  __m256i v_finalae = {0};
++  __m256i v_finalbf = {0};
++  __m256i v_finalcg = {0};
++  __m256i v_finaldh = {0};
++  __m256i v_final0145 = {0};
++  __m256i v_final2367 = {0};
++  uint64_t v_final0 = 0;
++  uint64_t v_final1 = 0;
++  uint64_t v_final2 = 0;
++  uint64_t v_final3 = 0;
++  uint64_t v_final4 = 0;
++  uint64_t v_final5 = 0;
++  uint64_t v_final6 = 0;
++  uint64_t v_final7 = 0;
++  wuffs_base__slice_u8 v_remaining = {0};
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_tokens[0];
+-  if (coro_susp_point) {
+-    v_depth = self->private_data.s_decode_tokens[0].v_depth;
+-    v_expect = self->private_data.s_decode_tokens[0].v_expect;
+-    v_expect_after_value = self->private_data.s_decode_tokens[0].v_expect_after_value;
++  if (8u > a_dst_stride) {
++    return wuffs_base__make_empty_struct();
+   }
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    if (self->private_impl.f_end_of_data) {
+-      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-      goto ok;
+-    }
+-    if (self->private_impl.f_quirks[18u]) {
+-      if (self->private_impl.f_quirks[11u] || self->private_impl.f_quirks[12u] || self->private_impl.f_quirks[17u]) {
+-        status = wuffs_base__make_status(wuffs_json__error__bad_quirk_combination);
+-        goto exit;
++  v_k_0000 = _mm256_set_epi16((int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u));
++  v_k_8080 = _mm256_set_epi16((int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u));
++  v_k_0000_0002 = _mm256_set_epi16((int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u));
++  v_k_0001_FFFF = _mm256_set_epi16((int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u));
++  v_k_0400_0000 = _mm256_set_epi16((int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u));
++  v_k_29CF_1151_D630_1151 = _mm256_set_epi16((int16_t)(4433u), (int16_t)(54832u), (int16_t)(4433u), (int16_t)(54832u), (int16_t)(4433u), (int16_t)(54832u), (int16_t)(4433u), (int16_t)(54832u), (int16_t)(4433u), (int16_t)(10703u), (int16_t)(4433u), (int16_t)(10703u), (int16_t)(4433u), (int16_t)(10703u), (int16_t)(4433u), (int16_t)(10703u));
++  v_k_E333_133E_ADFD_1051 = _mm256_set_epi16((int16_t)(4177u), (int16_t)(44541u), (int16_t)(4177u), (int16_t)(44541u), (int16_t)(4177u), (int16_t)(44541u), (int16_t)(4177u), (int16_t)(44541u), (int16_t)(4926u), (int16_t)(58163u), (int16_t)(4926u), (int16_t)(58163u), (int16_t)(4926u), (int16_t)(58163u), (int16_t)(4926u), (int16_t)(58163u));
++  v_k_E6DC_25A1_1925_25A1 = _mm256_set_epi16((int16_t)(9633u), (int16_t)(6437u), (int16_t)(9633u), (int16_t)(6437u), (int16_t)(9633u), (int16_t)(6437u), (int16_t)(9633u), (int16_t)(6437u), (int16_t)(9633u), (int16_t)(59100u), (int16_t)(9633u), (int16_t)(59100u), (int16_t)(9633u), (int16_t)(59100u), (int16_t)(9633u), (int16_t)(59100u));
++  v_k_ECC1_E333_EFB0_ADFD = _mm256_set_epi16((int16_t)(44541u), (int16_t)(61360u), (int16_t)(44541u), (int16_t)(61360u), (int16_t)(44541u), (int16_t)(61360u), (int16_t)(44541u), (int16_t)(61360u), (int16_t)(58163u), (int16_t)(60609u), (int16_t)(58163u), (int16_t)(60609u), (int16_t)(58163u), (int16_t)(60609u), (int16_t)(58163u), (int16_t)(60609u));
++  do {
++    if (0u == (wuffs_base__peek_u64le__no_bounds_check((const uint8_t*)(const void*)(self->private_data.f_mcu_blocks[0u] + 8u)) | wuffs_base__peek_u64le__no_bounds_check((const uint8_t*)(const void*)(self->private_data.f_mcu_blocks[0u] + 16u)))) {
++      v_az_coeffs = _mm_or_si128(_mm_or_si128(_mm_or_si128(_mm_or_si128(_mm_or_si128(_mm_or_si128(_mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 8u)), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 16u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 24u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 32u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 40u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 48u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 56u)));
++      if (0u == ((uint64_t)(_mm_cvtsi128_si64(_mm_packs_epi16(v_az_coeffs, v_az_coeffs))))) {
++        v_rows01 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 0u));
++        v_quants01 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 0u));
++        v_rows01 = _mm256_mullo_epi16(v_rows01, v_quants01);
++        v_az_ah00 = _mm256_slli_epi16(v_rows01, (int32_t)(2u));
++        v_az_ad00 = _mm256_unpacklo_epi16(v_az_ah00, v_az_ah00);
++        v_az_eh00 = _mm256_unpackhi_epi16(v_az_ah00, v_az_ah00);
++        v_az_adeh = _mm256_inserti128_si256(v_az_ad00, _mm256_castsi256_si128(v_az_eh00), (int32_t)(1u));
++        v_intermediateae = _mm256_shuffle_epi32(v_az_adeh, (int32_t)(0u));
++        v_intermediatebf = _mm256_shuffle_epi32(v_az_adeh, (int32_t)(85u));
++        v_intermediatecg = _mm256_shuffle_epi32(v_az_adeh, (int32_t)(170u));
++        v_intermediatedh = _mm256_shuffle_epi32(v_az_adeh, (int32_t)(255u));
++        break;
+       }
+     }
+-    if (self->private_impl.f_quirks[15u] || self->private_impl.f_quirks[16u]) {
+-      if (a_dst) {
+-        a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-      }
+-      if (a_src) {
+-        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-      }
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      status = wuffs_json__decoder__decode_leading(self, a_dst, a_src);
+-      if (a_dst) {
+-        iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
+-      }
+-      if (a_src) {
+-        iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-      }
+-      if (status.repr) {
+-        goto suspend;
+-      }
++    v_rows01 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 0u));
++    v_rows23 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 16u));
++    v_rows45 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 32u));
++    v_rows67 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 48u));
++    v_quants01 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 0u));
++    v_quants23 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 16u));
++    v_quants45 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 32u));
++    v_quants67 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 48u));
++    v_rows01 = _mm256_mullo_epi16(v_rows01, v_quants01);
++    v_rows23 = _mm256_mullo_epi16(v_rows23, v_quants23);
++    v_rows45 = _mm256_mullo_epi16(v_rows45, v_quants45);
++    v_rows67 = _mm256_mullo_epi16(v_rows67, v_quants67);
++    v_rows04 = _mm256_permute2x128_si256(v_rows01, v_rows45, (int32_t)(32u));
++    v_rows31 = _mm256_permute2x128_si256(v_rows23, v_rows01, (int32_t)(49u));
++    v_rows26 = _mm256_permute2x128_si256(v_rows23, v_rows67, (int32_t)(32u));
++    v_rows75 = _mm256_permute2x128_si256(v_rows67, v_rows45, (int32_t)(49u));
++    v_fp_rows62 = _mm256_permute2x128_si256(v_rows26, v_rows26, (int32_t)(1u));
++    v_fp_bq2662ad = _mm256_unpacklo_epi16(v_rows26, v_fp_rows62);
++    v_fp_bq2662eh = _mm256_unpackhi_epi16(v_rows26, v_fp_rows62);
++    v_fp_cb26ad = _mm256_madd_epi16(v_fp_bq2662ad, v_k_29CF_1151_D630_1151);
++    v_fp_cb26eh = _mm256_madd_epi16(v_fp_bq2662eh, v_k_29CF_1151_D630_1151);
++    v_fp_rows40pos = _mm256_permute2x128_si256(v_rows04, v_rows04, (int32_t)(1u));
++    v_fp_rows04neg = _mm256_sign_epi16(v_rows04, v_k_0001_FFFF);
++    v_fp_rows0pm4 = _mm256_add_epi16(v_fp_rows40pos, v_fp_rows04neg);
++    v_fp_ccpmad = _mm256_srai_epi32(_mm256_unpacklo_epi16(v_k_0000, v_fp_rows0pm4), (int32_t)(3u));
++    v_fp_ccpmeh = _mm256_srai_epi32(_mm256_unpackhi_epi16(v_k_0000, v_fp_rows0pm4), (int32_t)(3u));
++    v_fp_cd01ad = _mm256_add_epi32(v_fp_ccpmad, v_fp_cb26ad);
++    v_fp_cd01eh = _mm256_add_epi32(v_fp_ccpmeh, v_fp_cb26eh);
++    v_fp_cd32ad = _mm256_sub_epi32(v_fp_ccpmad, v_fp_cb26ad);
++    v_fp_cd32eh = _mm256_sub_epi32(v_fp_ccpmeh, v_fp_cb26eh);
++    v_fp_sums7351 = _mm256_add_epi16(v_rows75, v_rows31);
++    v_fp_sums5173 = _mm256_permute2x128_si256(v_fp_sums7351, v_fp_sums7351, (int32_t)(1u));
++    v_fp_ci73515173ad = _mm256_unpacklo_epi16(v_fp_sums7351, v_fp_sums5173);
++    v_fp_ci73515173eh = _mm256_unpackhi_epi16(v_fp_sums7351, v_fp_sums5173);
++    v_fp_cl7351ad = _mm256_madd_epi16(v_fp_ci73515173ad, v_k_E6DC_25A1_1925_25A1);
++    v_fp_cl7351eh = _mm256_madd_epi16(v_fp_ci73515173eh, v_k_E6DC_25A1_1925_25A1);
++    v_fp_rows13 = _mm256_permute2x128_si256(v_rows31, v_rows31, (int32_t)(1u));
++    v_fp_bq7153ad = _mm256_unpacklo_epi16(v_rows75, v_fp_rows13);
++    v_fp_bq7153eh = _mm256_unpackhi_epi16(v_rows75, v_fp_rows13);
++    v_fp_ck75ad = _mm256_add_epi32(_mm256_madd_epi16(v_fp_bq7153ad, v_k_ECC1_E333_EFB0_ADFD), v_fp_cl7351ad);
++    v_fp_ck75eh = _mm256_add_epi32(_mm256_madd_epi16(v_fp_bq7153eh, v_k_ECC1_E333_EFB0_ADFD), v_fp_cl7351eh);
++    v_fp_cl5173ad = _mm256_permute2x128_si256(v_fp_cl7351ad, v_fp_cl7351ad, (int32_t)(1u));
++    v_fp_cl5173eh = _mm256_permute2x128_si256(v_fp_cl7351eh, v_fp_cl7351eh, (int32_t)(1u));
++    v_fp_ck13ad = _mm256_add_epi32(v_fp_cl5173ad, _mm256_madd_epi16(v_fp_bq7153ad, v_k_E333_133E_ADFD_1051));
++    v_fp_ck13eh = _mm256_add_epi32(v_fp_cl5173eh, _mm256_madd_epi16(v_fp_bq7153eh, v_k_E333_133E_ADFD_1051));
++    v_intermediate01ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_fp_cd01ad, v_fp_ck13ad), v_k_0400_0000), (int32_t)(11u));
++    v_intermediate01eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_fp_cd01eh, v_fp_ck13eh), v_k_0400_0000), (int32_t)(11u));
++    v_intermediate01 = _mm256_packs_epi32(v_intermediate01ad, v_intermediate01eh);
++    v_intermediate32ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_fp_cd32ad, v_fp_ck75ad), v_k_0400_0000), (int32_t)(11u));
++    v_intermediate32eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_fp_cd32eh, v_fp_ck75eh), v_k_0400_0000), (int32_t)(11u));
++    v_intermediate32 = _mm256_packs_epi32(v_intermediate32ad, v_intermediate32eh);
++    v_intermediate45ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_fp_cd32ad, v_fp_ck75ad), v_k_0400_0000), (int32_t)(11u));
++    v_intermediate45eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_fp_cd32eh, v_fp_ck75eh), v_k_0400_0000), (int32_t)(11u));
++    v_intermediate45 = _mm256_packs_epi32(v_intermediate45ad, v_intermediate45eh);
++    v_intermediate76ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_fp_cd01ad, v_fp_ck13ad), v_k_0400_0000), (int32_t)(11u));
++    v_intermediate76eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_fp_cd01eh, v_fp_ck13eh), v_k_0400_0000), (int32_t)(11u));
++    v_intermediate76 = _mm256_packs_epi32(v_intermediate76ad, v_intermediate76eh);
++    v_ita0a1e0e1 = _mm256_permute4x64_epi64(v_intermediate01, (int32_t)(216u));
++    v_ita2a3e2e3 = _mm256_permute4x64_epi64(v_intermediate32, (int32_t)(114u));
++    v_ita4a5e4e5 = _mm256_permute4x64_epi64(v_intermediate45, (int32_t)(216u));
++    v_ita6a7e6e7 = _mm256_permute4x64_epi64(v_intermediate76, (int32_t)(114u));
++    v_ita0c0e0g0 = _mm256_unpacklo_epi16(v_ita0a1e0e1, v_ita2a3e2e3);
++    v_ita1c1e1g1 = _mm256_unpackhi_epi16(v_ita0a1e0e1, v_ita2a3e2e3);
++    v_ita4c4e4g4 = _mm256_unpacklo_epi16(v_ita4a5e4e5, v_ita6a7e6e7);
++    v_ita5c5e5g5 = _mm256_unpackhi_epi16(v_ita4a5e4e5, v_ita6a7e6e7);
++    v_ita0b0e0f0 = _mm256_unpacklo_epi16(v_ita0c0e0g0, v_ita1c1e1g1);
++    v_itc0d0g0h0 = _mm256_unpackhi_epi16(v_ita0c0e0g0, v_ita1c1e1g1);
++    v_ita4b4e4f4 = _mm256_unpacklo_epi16(v_ita4c4e4g4, v_ita5c5e5g5);
++    v_itc4d4g4h4 = _mm256_unpackhi_epi16(v_ita4c4e4g4, v_ita5c5e5g5);
++    v_intermediateae = _mm256_unpacklo_epi64(v_ita0b0e0f0, v_ita4b4e4f4);
++    v_intermediatebf = _mm256_unpackhi_epi64(v_ita0b0e0f0, v_ita4b4e4f4);
++    v_intermediatecg = _mm256_unpacklo_epi64(v_itc0d0g0h0, v_itc4d4g4h4);
++    v_intermediatedh = _mm256_unpackhi_epi64(v_itc0d0g0h0, v_itc4d4g4h4);
++  } while (0);
++  v_intermediatedb = _mm256_permute2x128_si256(v_intermediatedh, v_intermediatebf, (int32_t)(32u));
++  v_intermediatehf = _mm256_permute2x128_si256(v_intermediatedh, v_intermediatebf, (int32_t)(49u));
++  v_sp_cols62 = _mm256_permute2x128_si256(v_intermediatecg, v_intermediatecg, (int32_t)(1u));
++  v_sp_bq2662ad = _mm256_unpacklo_epi16(v_intermediatecg, v_sp_cols62);
++  v_sp_bq2662eh = _mm256_unpackhi_epi16(v_intermediatecg, v_sp_cols62);
++  v_sp_rb26ad = _mm256_madd_epi16(v_sp_bq2662ad, v_k_29CF_1151_D630_1151);
++  v_sp_rb26eh = _mm256_madd_epi16(v_sp_bq2662eh, v_k_29CF_1151_D630_1151);
++  v_sp_cols40pos = _mm256_permute2x128_si256(v_intermediateae, v_intermediateae, (int32_t)(1u));
++  v_sp_cols04neg = _mm256_sign_epi16(v_intermediateae, v_k_0001_FFFF);
++  v_sp_cols0pm4 = _mm256_add_epi16(v_sp_cols40pos, v_sp_cols04neg);
++  v_sp_rcpmad = _mm256_srai_epi32(_mm256_unpacklo_epi16(v_k_0000, v_sp_cols0pm4), (int32_t)(3u));
++  v_sp_rcpmeh = _mm256_srai_epi32(_mm256_unpackhi_epi16(v_k_0000, v_sp_cols0pm4), (int32_t)(3u));
++  v_sp_rd01ad = _mm256_add_epi32(v_sp_rcpmad, v_sp_rb26ad);
++  v_sp_rd01eh = _mm256_add_epi32(v_sp_rcpmeh, v_sp_rb26eh);
++  v_sp_rd32ad = _mm256_sub_epi32(v_sp_rcpmad, v_sp_rb26ad);
++  v_sp_rd32eh = _mm256_sub_epi32(v_sp_rcpmeh, v_sp_rb26eh);
++  v_sp_sums7351 = _mm256_add_epi16(v_intermediatehf, v_intermediatedb);
++  v_sp_sums5173 = _mm256_permute2x128_si256(v_sp_sums7351, v_sp_sums7351, (int32_t)(1u));
++  v_sp_ri73515173ad = _mm256_unpacklo_epi16(v_sp_sums7351, v_sp_sums5173);
++  v_sp_ri73515173eh = _mm256_unpackhi_epi16(v_sp_sums7351, v_sp_sums5173);
++  v_sp_rl7351ad = _mm256_madd_epi16(v_sp_ri73515173ad, v_k_E6DC_25A1_1925_25A1);
++  v_sp_rl7351eh = _mm256_madd_epi16(v_sp_ri73515173eh, v_k_E6DC_25A1_1925_25A1);
++  v_sp_cols13 = _mm256_permute2x128_si256(v_intermediatedb, v_intermediatedb, (int32_t)(1u));
++  v_sp_bq7153ad = _mm256_unpacklo_epi16(v_intermediatehf, v_sp_cols13);
++  v_sp_bq7153eh = _mm256_unpackhi_epi16(v_intermediatehf, v_sp_cols13);
++  v_sp_rk75ad = _mm256_add_epi32(_mm256_madd_epi16(v_sp_bq7153ad, v_k_ECC1_E333_EFB0_ADFD), v_sp_rl7351ad);
++  v_sp_rk75eh = _mm256_add_epi32(_mm256_madd_epi16(v_sp_bq7153eh, v_k_ECC1_E333_EFB0_ADFD), v_sp_rl7351eh);
++  v_sp_rl5173ad = _mm256_permute2x128_si256(v_sp_rl7351ad, v_sp_rl7351ad, (int32_t)(1u));
++  v_sp_rl5173eh = _mm256_permute2x128_si256(v_sp_rl7351eh, v_sp_rl7351eh, (int32_t)(1u));
++  v_sp_rk13ad = _mm256_add_epi32(v_sp_rl5173ad, _mm256_madd_epi16(v_sp_bq7153ad, v_k_E333_133E_ADFD_1051));
++  v_sp_rk13eh = _mm256_add_epi32(v_sp_rl5173eh, _mm256_madd_epi16(v_sp_bq7153eh, v_k_E333_133E_ADFD_1051));
++  v_final01ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_sp_rd01ad, v_sp_rk13ad), v_k_0000_0002), (int32_t)(18u));
++  v_final01eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_sp_rd01eh, v_sp_rk13eh), v_k_0000_0002), (int32_t)(18u));
++  v_final01 = _mm256_packs_epi32(v_final01ad, v_final01eh);
++  v_final32ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_sp_rd32ad, v_sp_rk75ad), v_k_0000_0002), (int32_t)(18u));
++  v_final32eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_sp_rd32eh, v_sp_rk75eh), v_k_0000_0002), (int32_t)(18u));
++  v_final32 = _mm256_packs_epi32(v_final32ad, v_final32eh);
++  v_final45ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_sp_rd32ad, v_sp_rk75ad), v_k_0000_0002), (int32_t)(18u));
++  v_final45eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_sp_rd32eh, v_sp_rk75eh), v_k_0000_0002), (int32_t)(18u));
++  v_final45 = _mm256_packs_epi32(v_final45ad, v_final45eh);
++  v_final76ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_sp_rd01ad, v_sp_rk13ad), v_k_0000_0002), (int32_t)(18u));
++  v_final76eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_sp_rd01eh, v_sp_rk13eh), v_k_0000_0002), (int32_t)(18u));
++  v_final76 = _mm256_packs_epi32(v_final76ad, v_final76eh);
++  v_fta0a1e0e1 = _mm256_permute4x64_epi64(v_final01, (int32_t)(216u));
++  v_fta2a3e2e3 = _mm256_permute4x64_epi64(v_final32, (int32_t)(114u));
++  v_fta4a5e4e5 = _mm256_permute4x64_epi64(v_final45, (int32_t)(216u));
++  v_fta6a7e6e7 = _mm256_permute4x64_epi64(v_final76, (int32_t)(114u));
++  v_fta0c0e0g0 = _mm256_unpacklo_epi16(v_fta0a1e0e1, v_fta2a3e2e3);
++  v_fta1c1e1g1 = _mm256_unpackhi_epi16(v_fta0a1e0e1, v_fta2a3e2e3);
++  v_fta4c4e4g4 = _mm256_unpacklo_epi16(v_fta4a5e4e5, v_fta6a7e6e7);
++  v_fta5c5e5g5 = _mm256_unpackhi_epi16(v_fta4a5e4e5, v_fta6a7e6e7);
++  v_fta0b0e0f0 = _mm256_unpacklo_epi16(v_fta0c0e0g0, v_fta1c1e1g1);
++  v_ftc0d0g0h0 = _mm256_unpackhi_epi16(v_fta0c0e0g0, v_fta1c1e1g1);
++  v_fta4b4e4f4 = _mm256_unpacklo_epi16(v_fta4c4e4g4, v_fta5c5e5g5);
++  v_ftc4d4g4h4 = _mm256_unpackhi_epi16(v_fta4c4e4g4, v_fta5c5e5g5);
++  v_finalae = _mm256_unpacklo_epi64(v_fta0b0e0f0, v_fta4b4e4f4);
++  v_finalbf = _mm256_unpackhi_epi64(v_fta0b0e0f0, v_fta4b4e4f4);
++  v_finalcg = _mm256_unpacklo_epi64(v_ftc0d0g0h0, v_ftc4d4g4h4);
++  v_finaldh = _mm256_unpackhi_epi64(v_ftc0d0g0h0, v_ftc4d4g4h4);
++  v_final0145 = _mm256_add_epi8(_mm256_packs_epi16(v_finalae, v_finalbf), v_k_8080);
++  v_final2367 = _mm256_add_epi8(_mm256_packs_epi16(v_finalcg, v_finaldh), v_k_8080);
++  v_final0 = ((uint64_t)(_mm256_extract_epi64(v_final0145, (int32_t)(0u))));
++  v_final1 = ((uint64_t)(_mm256_extract_epi64(v_final0145, (int32_t)(1u))));
++  v_final2 = ((uint64_t)(_mm256_extract_epi64(v_final2367, (int32_t)(0u))));
++  v_final3 = ((uint64_t)(_mm256_extract_epi64(v_final2367, (int32_t)(1u))));
++  v_final4 = ((uint64_t)(_mm256_extract_epi64(v_final0145, (int32_t)(2u))));
++  v_final5 = ((uint64_t)(_mm256_extract_epi64(v_final0145, (int32_t)(3u))));
++  v_final6 = ((uint64_t)(_mm256_extract_epi64(v_final2367, (int32_t)(2u))));
++  v_final7 = ((uint64_t)(_mm256_extract_epi64(v_final2367, (int32_t)(3u))));
++  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
++    return wuffs_base__make_empty_struct();
++  }
++  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
++  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final0);
++  a_dst_buffer = v_remaining;
++  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
++    return wuffs_base__make_empty_struct();
++  }
++  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
++  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final1);
++  a_dst_buffer = v_remaining;
++  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
++    return wuffs_base__make_empty_struct();
++  }
++  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
++  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final2);
++  a_dst_buffer = v_remaining;
++  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
++    return wuffs_base__make_empty_struct();
++  }
++  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
++  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final3);
++  a_dst_buffer = v_remaining;
++  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
++    return wuffs_base__make_empty_struct();
++  }
++  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
++  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final4);
++  a_dst_buffer = v_remaining;
++  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
++    return wuffs_base__make_empty_struct();
++  }
++  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
++  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final5);
++  a_dst_buffer = v_remaining;
++  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
++    return wuffs_base__make_empty_struct();
++  }
++  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
++  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final6);
++  a_dst_buffer = v_remaining;
++  if (8u > ((uint64_t)(a_dst_buffer.len))) {
++    return wuffs_base__make_empty_struct();
++  }
++  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final7);
++  return wuffs_base__make_empty_struct();
++}
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
++// ‼ WUFFS MULTI-FILE SECTION -x86_avx2
++
++// -------- func jpeg.decoder.get_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_jpeg__decoder__get_quirk(
++    const wuffs_jpeg__decoder* self,
++    uint32_t a_key) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  if (a_key == 2u) {
++    if (self->private_impl.f_use_lower_quality) {
++      return 18446744073709551615u;
++    }
++  } else if (a_key == 1220532224u) {
++    if (self->private_impl.f_reject_progressive_jpegs) {
++      return 1u;
++    }
++  }
++  return 0u;
++}
++
++// -------- func jpeg.decoder.set_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_jpeg__decoder__set_quirk(
++    wuffs_jpeg__decoder* self,
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++
++  if (a_key == 2u) {
++    self->private_impl.f_use_lower_quality = (a_value >= 9223372036854775808u);
++    return wuffs_base__make_status(NULL);
++  } else if (a_key == 1220532224u) {
++    self->private_impl.f_reject_progressive_jpegs = (a_value != 0u);
++    return wuffs_base__make_status(NULL);
++  }
++  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++}
++
++// -------- func jpeg.decoder.decode_image_config
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_jpeg__decoder__decode_image_config(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 1)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_image_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_jpeg__decoder__do_decode_image_config(self, a_dst, a_src);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_jpeg__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++
++    ok:
++    self->private_impl.p_decode_image_config = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func jpeg.decoder.do_decode_image_config
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_jpeg__decoder__do_decode_image_config(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_c8 = 0;
++  uint8_t v_marker = 0;
++  uint32_t v_pixfmt = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config;
++  if (coro_susp_point) {
++    v_marker = self->private_data.s_do_decode_image_config.v_marker;
++  }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_call_sequence != 0u) {
++      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++      goto exit;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_0 = *iop_a_src++;
++      v_c8 = t_0;
++    }
++    if (v_c8 != 255u) {
++      status = wuffs_base__make_status(wuffs_jpeg__error__bad_header);
++      goto exit;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_1 = *iop_a_src++;
++      v_c8 = t_1;
++    }
++    if (v_c8 != 216u) {
++      status = wuffs_base__make_status(wuffs_jpeg__error__bad_header);
++      goto exit;
+     }
+-    v_expect = 7858u;
+-    label__outer__continue:;
+     while (true) {
+       while (true) {
+-        if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
+-          goto label__outer__continue;
+-        }
+-        v_whitespace_length = 0u;
+-        v_c = 0u;
+-        v_class = 0u;
+-        while (true) {
+-          if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-            if (v_whitespace_length > 0u) {
+-              *iop_a_dst++ = wuffs_base__make_token(
+-                  (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                  (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-              v_whitespace_length = 0u;
+-            }
+-            if (a_src && a_src->meta.closed) {
+-              status = wuffs_base__make_status(wuffs_json__error__bad_input);
+-              goto exit;
+-            }
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
+-            goto label__outer__continue;
+-          }
+-          v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-          v_class = WUFFS_JSON__LUT_CLASSES[v_c];
+-          if (v_class != 0u) {
+-            break;
+-          }
+-          iop_a_src += 1u;
+-          if (v_whitespace_length >= 65534u) {
+-            *iop_a_dst++ = wuffs_base__make_token(
+-                (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                (((uint64_t)(65535u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-            v_whitespace_length = 0u;
+-            goto label__outer__continue;
++            goto suspend;
+           }
+-          v_whitespace_length += 1u;
++          uint8_t t_2 = *iop_a_src++;
++          v_c8 = t_2;
+         }
+-        if (v_whitespace_length > 0u) {
+-          *iop_a_dst++ = wuffs_base__make_token(
+-              (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-              (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-          v_whitespace_length = 0u;
+-          if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-            goto label__outer__continue;
++        if (v_c8 == 255u) {
++          break;
++        }
++      }
++      while (true) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
+           }
++          uint8_t t_3 = *iop_a_src++;
++          v_c8 = t_3;
+         }
+-        if (0u == (v_expect & (((uint32_t)(1u)) << v_class))) {
+-          status = wuffs_base__make_status(wuffs_json__error__bad_input);
+-          goto exit;
++        if (v_c8 != 255u) {
++          v_marker = v_c8;
++          break;
+         }
+-        if (v_class == 1u) {
+-          *iop_a_dst++ = wuffs_base__make_token(
+-              (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-          iop_a_src += 1u;
+-          label__string_loop_outer__continue:;
+-          while (true) {
+-            if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
+-              continue;
+-            }
+-            v_string_length = 0u;
++      }
++      if (v_marker == 0u) {
++        continue;
++      } else if ((208u <= v_marker) && (v_marker <= 217u)) {
++        if (v_marker <= 215u) {
++          continue;
++        }
++      } else {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++          uint32_t t_4;
++          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++            t_4 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
++            iop_a_src += 2;
++          } else {
++            self->private_data.s_do_decode_image_config.scratch = 0;
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+             while (true) {
+-              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-                if (v_string_length > 0u) {
+-                  *iop_a_dst++ = wuffs_base__make_token(
+-                      (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                      (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                  v_string_length = 0u;
+-                }
+-                if (a_src && a_src->meta.closed) {
+-                  status = wuffs_base__make_status(wuffs_json__error__bad_input);
+-                  goto exit;
+-                }
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+                 status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
+-                goto label__string_loop_outer__continue;
++                goto suspend;
+               }
+-              while (((uint64_t)(io2_a_src - iop_a_src)) > 4u) {
+-                v_c4 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-                if (0u != (WUFFS_JSON__LUT_CHARS[(255u & (v_c4 >> 0u))] |
+-                    WUFFS_JSON__LUT_CHARS[(255u & (v_c4 >> 8u))] |
+-                    WUFFS_JSON__LUT_CHARS[(255u & (v_c4 >> 16u))] |
+-                    WUFFS_JSON__LUT_CHARS[(255u & (v_c4 >> 24u))])) {
+-                  break;
+-                }
+-                iop_a_src += 4u;
+-                if (v_string_length > 65527u) {
+-                  *iop_a_dst++ = wuffs_base__make_token(
+-                      (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                      (((uint64_t)((v_string_length + 4u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                  v_string_length = 0u;
+-                  goto label__string_loop_outer__continue;
+-                }
+-                v_string_length += 4u;
++              uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++              uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFFu));
++              *scratch >>= 8;
++              *scratch <<= 8;
++              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4);
++              if (num_bits_4 == 8) {
++                t_4 = ((uint32_t)(*scratch >> 48));
++                break;
+               }
+-              v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-              v_char = WUFFS_JSON__LUT_CHARS[v_c];
+-              if (v_char == 0u) {
+-                iop_a_src += 1u;
+-                if (v_string_length >= 65531u) {
+-                  *iop_a_dst++ = wuffs_base__make_token(
+-                      (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                      (((uint64_t)(65532u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                  v_string_length = 0u;
+-                  goto label__string_loop_outer__continue;
+-                }
+-                v_string_length += 1u;
+-                continue;
+-              } else if (v_char == 1u) {
+-                if (v_string_length != 0u) {
+-                  *iop_a_dst++ = wuffs_base__make_token(
+-                      (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                      (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                  v_string_length = 0u;
+-                }
+-                goto label__string_loop_outer__break;
+-              } else if (v_char == 2u) {
+-                if (v_string_length > 0u) {
+-                  *iop_a_dst++ = wuffs_base__make_token(
+-                      (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                      (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                  v_string_length = 0u;
+-                  if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-                    goto label__string_loop_outer__continue;
+-                  }
+-                }
+-                if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
+-                  if (a_src && a_src->meta.closed) {
+-                    status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
+-                    goto exit;
+-                  }
+-                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
+-                  goto label__string_loop_outer__continue;
+-                }
+-                v_c = ((uint8_t)((wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8u)));
+-                v_backslash = WUFFS_JSON__LUT_BACKSLASHES[v_c];
+-                if ((v_backslash & 128u) != 0u) {
+-                  iop_a_src += 2u;
+-                  *iop_a_dst++ = wuffs_base__make_token(
+-                      (((uint64_t)((6291456u | ((uint32_t)((v_backslash & 127u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                      (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                  goto label__string_loop_outer__continue;
+-                } else if (v_backslash != 0u) {
+-                  if (self->private_impl.f_quirks[WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_QUIRKS[(v_backslash & 7u)]]) {
+-                    iop_a_src += 2u;
+-                    *iop_a_dst++ = wuffs_base__make_token(
+-                        (((uint64_t)((6291456u | ((uint32_t)(WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_CHARS[(v_backslash & 7u)]))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                        (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                    goto label__string_loop_outer__continue;
+-                  }
+-                } else if (v_c == 117u) {
+-                  if (((uint64_t)(io2_a_src - iop_a_src)) < 6u) {
+-                    if (a_src && a_src->meta.closed) {
+-                      status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
+-                      goto exit;
+-                    }
+-                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
+-                    goto label__string_loop_outer__continue;
+-                  }
+-                  v_uni4_string = (((uint64_t)(wuffs_base__peek_u48le__no_bounds_check(iop_a_src))) >> 16u);
+-                  v_uni4_value = 0u;
+-                  v_uni4_ok = 128u;
+-                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 0u))];
+-                  v_uni4_ok &= v_c;
+-                  v_uni4_value |= (((uint32_t)((v_c & 15u))) << 12u);
+-                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 8u))];
+-                  v_uni4_ok &= v_c;
+-                  v_uni4_value |= (((uint32_t)((v_c & 15u))) << 8u);
+-                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 16u))];
+-                  v_uni4_ok &= v_c;
+-                  v_uni4_value |= (((uint32_t)((v_c & 15u))) << 4u);
+-                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 24u))];
+-                  v_uni4_ok &= v_c;
+-                  v_uni4_value |= (((uint32_t)((v_c & 15u))) << 0u);
+-                  if (v_uni4_ok == 0u) {
+-                  } else if ((v_uni4_value < 55296u) || (57343u < v_uni4_value)) {
+-                    iop_a_src += 6u;
+-                    *iop_a_dst++ = wuffs_base__make_token(
+-                        (((uint64_t)((6291456u | v_uni4_value))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                        (((uint64_t)(6u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                    goto label__string_loop_outer__continue;
+-                  } else if (v_uni4_value >= 56320u) {
+-                  } else {
+-                    if (((uint64_t)(io2_a_src - iop_a_src)) < 12u) {
+-                      if (a_src && a_src->meta.closed) {
+-                        if (self->private_impl.f_quirks[20u]) {
+-                          iop_a_src += 6u;
+-                          *iop_a_dst++ = wuffs_base__make_token(
+-                              (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                              (((uint64_t)(6u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                          goto label__string_loop_outer__continue;
+-                        }
+-                        status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
+-                        goto exit;
+-                      }
+-                      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
+-                      goto label__string_loop_outer__continue;
+-                    }
+-                    v_uni4_string = (wuffs_base__peek_u64le__no_bounds_check(iop_a_src + 4u) >> 16u);
+-                    if (((255u & (v_uni4_string >> 0u)) != 92u) || ((255u & (v_uni4_string >> 8u)) != 117u)) {
+-                      v_uni4_high_surrogate = 0u;
+-                      v_uni4_value = 0u;
+-                      v_uni4_ok = 0u;
+-                    } else {
+-                      v_uni4_high_surrogate = (65536u + ((v_uni4_value - 55296u) << 10u));
+-                      v_uni4_value = 0u;
+-                      v_uni4_ok = 128u;
+-                      v_uni4_string >>= 16u;
+-                      v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 0u))];
+-                      v_uni4_ok &= v_c;
+-                      v_uni4_value |= (((uint32_t)((v_c & 15u))) << 12u);
+-                      v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 8u))];
+-                      v_uni4_ok &= v_c;
+-                      v_uni4_value |= (((uint32_t)((v_c & 15u))) << 8u);
+-                      v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 16u))];
+-                      v_uni4_ok &= v_c;
+-                      v_uni4_value |= (((uint32_t)((v_c & 15u))) << 4u);
+-                      v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 24u))];
+-                      v_uni4_ok &= v_c;
+-                      v_uni4_value |= (((uint32_t)((v_c & 15u))) << 0u);
+-                    }
+-                    if ((v_uni4_ok != 0u) && (56320u <= v_uni4_value) && (v_uni4_value <= 57343u)) {
+-                      v_uni4_value -= 56320u;
+-                      iop_a_src += 12u;
+-                      *iop_a_dst++ = wuffs_base__make_token(
+-                          (((uint64_t)((6291456u | v_uni4_high_surrogate | v_uni4_value))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                          (((uint64_t)(12u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                      goto label__string_loop_outer__continue;
+-                    }
+-                  }
+-                  if (self->private_impl.f_quirks[20u]) {
+-                    if (((uint64_t)(io2_a_src - iop_a_src)) < 6u) {
+-                      status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
+-                      goto exit;
+-                    }
+-                    iop_a_src += 6u;
+-                    *iop_a_dst++ = wuffs_base__make_token(
+-                        (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                        (((uint64_t)(6u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                    goto label__string_loop_outer__continue;
+-                  }
+-                } else if ((v_c == 85u) && self->private_impl.f_quirks[2u]) {
+-                  if (((uint64_t)(io2_a_src - iop_a_src)) < 10u) {
+-                    if (a_src && a_src->meta.closed) {
+-                      status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
+-                      goto exit;
+-                    }
+-                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
+-                    goto label__string_loop_outer__continue;
+-                  }
+-                  v_uni8_string = wuffs_base__peek_u64le__no_bounds_check(iop_a_src + 2u);
+-                  v_uni8_value = 0u;
+-                  v_uni8_ok = 128u;
+-                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 0u))];
+-                  v_uni8_ok &= v_c;
+-                  v_uni8_value |= (((uint32_t)((v_c & 15u))) << 28u);
+-                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 8u))];
+-                  v_uni8_ok &= v_c;
+-                  v_uni8_value |= (((uint32_t)((v_c & 15u))) << 24u);
+-                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 16u))];
+-                  v_uni8_ok &= v_c;
+-                  v_uni8_value |= (((uint32_t)((v_c & 15u))) << 20u);
+-                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 24u))];
+-                  v_uni8_ok &= v_c;
+-                  v_uni8_value |= (((uint32_t)((v_c & 15u))) << 16u);
+-                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 32u))];
+-                  v_uni8_ok &= v_c;
+-                  v_uni8_value |= (((uint32_t)((v_c & 15u))) << 12u);
+-                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 40u))];
+-                  v_uni8_ok &= v_c;
+-                  v_uni8_value |= (((uint32_t)((v_c & 15u))) << 8u);
+-                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 48u))];
+-                  v_uni8_ok &= v_c;
+-                  v_uni8_value |= (((uint32_t)((v_c & 15u))) << 4u);
+-                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 56u))];
+-                  v_uni8_ok &= v_c;
+-                  v_uni8_value |= (((uint32_t)((v_c & 15u))) << 0u);
+-                  if (v_uni8_ok == 0u) {
+-                  } else if ((v_uni8_value < 55296u) || ((57343u < v_uni8_value) && (v_uni8_value <= 1114111u))) {
+-                    iop_a_src += 10u;
+-                    *iop_a_dst++ = wuffs_base__make_token(
+-                        (((uint64_t)((6291456u | (v_uni8_value & 2097151u)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                        (((uint64_t)(10u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                    goto label__string_loop_outer__continue;
+-                  } else if (self->private_impl.f_quirks[20u]) {
+-                    iop_a_src += 10u;
+-                    *iop_a_dst++ = wuffs_base__make_token(
+-                        (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                        (((uint64_t)(10u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                    goto label__string_loop_outer__continue;
+-                  }
+-                } else if ((v_c == 120u) && self->private_impl.f_quirks[9u]) {
+-                  if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
+-                    if (a_src && a_src->meta.closed) {
+-                      status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
+-                      goto exit;
+-                    }
+-                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
+-                    goto label__string_loop_outer__continue;
+-                  }
+-                  v_backslash_x_string = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-                  v_backslash_x_ok = 128u;
+-                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_backslash_x_string >> 16u))];
+-                  v_backslash_x_ok &= v_c;
+-                  v_backslash_x_value = ((uint8_t)(((v_c & 15u) << 4u)));
+-                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_backslash_x_string >> 24u))];
+-                  v_backslash_x_ok &= v_c;
+-                  v_backslash_x_value = ((uint8_t)((v_backslash_x_value | (v_c & 15u))));
+-                  if ((v_backslash_x_ok == 0u) || ((v_backslash_x_string & 65535u) != 30812u)) {
+-                    status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
+-                    goto exit;
+-                  }
+-                  iop_a_src += 4u;
+-                  *iop_a_dst++ = wuffs_base__make_token(
+-                      (((uint64_t)((6291456u | ((uint32_t)(v_backslash_x_value))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                      (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                  goto label__string_loop_outer__continue;
+-                }
+-                status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
+-                goto exit;
+-              } else if (v_char == 3u) {
+-                if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
+-                  if (v_string_length > 0u) {
+-                    *iop_a_dst++ = wuffs_base__make_token(
+-                        (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                        (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                    v_string_length = 0u;
+-                    if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-                      goto label__string_loop_outer__continue;
+-                    }
+-                  }
+-                  if (a_src && a_src->meta.closed) {
+-                    if (self->private_impl.f_quirks[20u]) {
+-                      *iop_a_dst++ = wuffs_base__make_token(
+-                          (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                      iop_a_src += 1u;
+-                      goto label__string_loop_outer__continue;
+-                    }
+-                    status = wuffs_base__make_status(wuffs_json__error__bad_utf_8);
+-                    goto exit;
+-                  }
+-                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11);
+-                  goto label__string_loop_outer__continue;
+-                }
+-                v_multi_byte_utf8 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-                if ((v_multi_byte_utf8 & 49152u) == 32768u) {
+-                  v_multi_byte_utf8 = ((1984u & ((uint32_t)(v_multi_byte_utf8 << 6u))) | (63u & (v_multi_byte_utf8 >> 8u)));
+-                  iop_a_src += 2u;
+-                  if (v_string_length >= 65528u) {
+-                    *iop_a_dst++ = wuffs_base__make_token(
+-                        (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                        (((uint64_t)((v_string_length + 2u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                    v_string_length = 0u;
+-                    goto label__string_loop_outer__continue;
+-                  }
+-                  v_string_length += 2u;
+-                  continue;
+-                }
+-              } else if (v_char == 4u) {
+-                if (((uint64_t)(io2_a_src - iop_a_src)) < 3u) {
+-                  if (v_string_length > 0u) {
+-                    *iop_a_dst++ = wuffs_base__make_token(
+-                        (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                        (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                    v_string_length = 0u;
+-                    if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-                      goto label__string_loop_outer__continue;
+-                    }
+-                  }
+-                  if (a_src && a_src->meta.closed) {
+-                    if (self->private_impl.f_quirks[20u]) {
+-                      *iop_a_dst++ = wuffs_base__make_token(
+-                          (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                      iop_a_src += 1u;
+-                      goto label__string_loop_outer__continue;
+-                    }
+-                    status = wuffs_base__make_status(wuffs_json__error__bad_utf_8);
+-                    goto exit;
+-                  }
+-                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(12);
+-                  goto label__string_loop_outer__continue;
+-                }
+-                v_multi_byte_utf8 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
+-                if ((v_multi_byte_utf8 & 12632064u) == 8421376u) {
+-                  v_multi_byte_utf8 = ((61440u & ((uint32_t)(v_multi_byte_utf8 << 12u))) | (4032u & (v_multi_byte_utf8 >> 2u)) | (63u & (v_multi_byte_utf8 >> 16u)));
+-                  if ((2047u < v_multi_byte_utf8) && ((v_multi_byte_utf8 < 55296u) || (57343u < v_multi_byte_utf8))) {
+-                    iop_a_src += 3u;
+-                    if (v_string_length >= 65528u) {
+-                      *iop_a_dst++ = wuffs_base__make_token(
+-                          (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                          (((uint64_t)((v_string_length + 3u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                      v_string_length = 0u;
+-                      goto label__string_loop_outer__continue;
+-                    }
+-                    v_string_length += 3u;
+-                    continue;
+-                  }
+-                }
+-              } else if (v_char == 5u) {
+-                if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
+-                  if (v_string_length > 0u) {
+-                    *iop_a_dst++ = wuffs_base__make_token(
+-                        (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                        (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                    v_string_length = 0u;
+-                    if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-                      goto label__string_loop_outer__continue;
+-                    }
+-                  }
+-                  if (a_src && a_src->meta.closed) {
+-                    if (self->private_impl.f_quirks[20u]) {
+-                      *iop_a_dst++ = wuffs_base__make_token(
+-                          (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                      iop_a_src += 1u;
+-                      goto label__string_loop_outer__continue;
+-                    }
+-                    status = wuffs_base__make_status(wuffs_json__error__bad_utf_8);
+-                    goto exit;
+-                  }
+-                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(13);
+-                  goto label__string_loop_outer__continue;
+-                }
+-                v_multi_byte_utf8 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-                if ((v_multi_byte_utf8 & 3233857536u) == 2155905024u) {
+-                  v_multi_byte_utf8 = ((1835008u & ((uint32_t)(v_multi_byte_utf8 << 18u))) |
+-                      (258048u & ((uint32_t)(v_multi_byte_utf8 << 4u))) |
+-                      (4032u & (v_multi_byte_utf8 >> 10u)) |
+-                      (63u & (v_multi_byte_utf8 >> 24u)));
+-                  if ((65535u < v_multi_byte_utf8) && (v_multi_byte_utf8 <= 1114111u)) {
+-                    iop_a_src += 4u;
+-                    if (v_string_length >= 65528u) {
+-                      *iop_a_dst++ = wuffs_base__make_token(
+-                          (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                          (((uint64_t)((v_string_length + 4u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                      v_string_length = 0u;
+-                      goto label__string_loop_outer__continue;
+-                    }
+-                    v_string_length += 4u;
+-                    continue;
+-                  }
+-                }
+-              }
+-              if (v_string_length > 0u) {
+-                *iop_a_dst++ = wuffs_base__make_token(
+-                    (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                    (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                    (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                v_string_length = 0u;
+-                if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-                  goto label__string_loop_outer__continue;
+-                }
+-              }
+-              if ((v_char & 128u) != 0u) {
+-                if (self->private_impl.f_quirks[0u]) {
+-                  *iop_a_dst++ = wuffs_base__make_token(
+-                      (((uint64_t)((6291456u | ((uint32_t)((v_char & 127u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                  iop_a_src += 1u;
+-                  goto label__string_loop_outer__continue;
+-                }
+-                if (v_char == 138u) {
+-                  status = wuffs_base__make_status(wuffs_json__error__bad_new_line_in_a_string);
+-                  goto exit;
+-                }
+-                status = wuffs_base__make_status(wuffs_json__error__bad_c0_control_code);
+-                goto exit;
+-              }
+-              if (self->private_impl.f_quirks[20u]) {
+-                *iop_a_dst++ = wuffs_base__make_token(
+-                    (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                    (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                    (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-                iop_a_src += 1u;
+-                goto label__string_loop_outer__continue;
+-              }
+-              status = wuffs_base__make_status(wuffs_json__error__bad_utf_8);
+-              goto exit;
++              num_bits_4 += 8u;
++              *scratch |= ((uint64_t)(num_bits_4));
+             }
+           }
+-          label__string_loop_outer__break:;
+-          while (true) {
+-            if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-              if (a_src && a_src->meta.closed) {
+-                status = wuffs_base__make_status(wuffs_json__error__bad_input);
+-                goto exit;
+-              }
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(14);
+-              continue;
+-            }
+-            if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(15);
+-              continue;
+-            }
+-            iop_a_src += 1u;
+-            *iop_a_dst++ = wuffs_base__make_token(
+-                (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-            break;
++          self->private_impl.f_payload_length = t_4;
++        }
++        if (self->private_impl.f_payload_length < 2u) {
++          status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker);
++          goto exit;
++        }
++        self->private_impl.f_payload_length -= 2u;
++      }
++      if (v_marker < 192u) {
++        status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
++        goto exit;
++      } else if (v_marker < 208u) {
++        if (v_marker <= 194u) {
++          if ((v_marker == 194u) && self->private_impl.f_reject_progressive_jpegs) {
++            status = wuffs_base__make_status(wuffs_jpeg__error__rejected_progressive_jpeg);
++            goto exit;
++          } else if (self->private_impl.f_sof_marker != 0u) {
++            status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
++            goto exit;
+           }
+-          if (0u == (v_expect & (((uint32_t)(1u)) << 4u))) {
+-            v_expect = 4104u;
+-            goto label__outer__continue;
++          self->private_impl.f_sof_marker = v_marker;
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++          status = wuffs_jpeg__decoder__decode_sof(self, a_src);
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++          if (status.repr) {
++            goto suspend;
+           }
+           break;
+-        } else if (v_class == 2u) {
+-          iop_a_src += 1u;
+-          *iop_a_dst++ = wuffs_base__make_token(
+-              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-          if (0u == (v_expect & (((uint32_t)(1u)) << 8u))) {
+-            if (self->private_impl.f_quirks[13u]) {
+-              v_expect = 4162u;
+-            } else {
+-              v_expect = 4098u;
+-            }
+-          } else {
+-            if (self->private_impl.f_quirks[13u]) {
+-              v_expect = 8114u;
+-            } else {
+-              v_expect = 7858u;
+-            }
++        } else if (v_marker == 195u) {
++          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_lossless_coding);
++          goto exit;
++        } else if (v_marker == 196u) {
++          status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
++          goto exit;
++        } else if ((197u <= v_marker) && (v_marker <= 199u)) {
++          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_hierarchical_coding);
++          goto exit;
++        } else if (v_marker == 200u) {
++          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
++          goto exit;
++        } else {
++          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_arithmetic_coding);
++          goto exit;
++        }
++      } else if (v_marker < 224u) {
++        if (v_marker < 218u) {
++          status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker);
++          goto exit;
++        } else if (v_marker == 218u) {
++          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
++          goto exit;
++        } else if (v_marker == 219u) {
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+           }
+-          goto label__outer__continue;
+-        } else if (v_class == 3u) {
+-          iop_a_src += 1u;
+-          *iop_a_dst++ = wuffs_base__make_token(
+-              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-          v_expect = 7858u;
+-          goto label__outer__continue;
+-        } else if (v_class == 4u) {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++          status = wuffs_jpeg__decoder__decode_dqt(self, a_src);
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++          if (status.repr) {
++            goto suspend;
++          }
++          continue;
++        } else if (v_marker == 221u) {
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++          status = wuffs_jpeg__decoder__decode_dri(self, a_src);
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++          if (status.repr) {
++            goto suspend;
++          }
++          continue;
++        } else {
++          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
++          goto exit;
++        }
++      } else if (v_marker < 240u) {
++        if (a_src) {
++          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++        }
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
++        status = wuffs_jpeg__decoder__decode_appn(self, a_src, v_marker);
++        if (a_src) {
++          iop_a_src = a_src->data.ptr + a_src->meta.ri;
++        }
++        if (status.repr) {
++          goto suspend;
++        }
++        continue;
++      } else {
++        if (v_marker == 254u) {
++        } else {
++          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
++          goto exit;
++        }
++      }
++      self->private_data.s_do_decode_image_config.scratch = self->private_impl.f_payload_length;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
++      if (self->private_data.s_do_decode_image_config.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++        self->private_data.s_do_decode_image_config.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++        iop_a_src = io2_a_src;
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      iop_a_src += self->private_data.s_do_decode_image_config.scratch;
++      self->private_impl.f_payload_length = 0u;
++    }
++    self->private_impl.choosy_decode_idct = (
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
++        wuffs_base__cpu_arch__have_x86_avx2() ? &wuffs_jpeg__decoder__decode_idct_x86_avx2 :
++#endif
++        self->private_impl.choosy_decode_idct);
++    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
++    if (a_dst != NULL) {
++      v_pixfmt = 536870920u;
++      if (self->private_impl.f_num_components > 1u) {
++        v_pixfmt = 2415954056u;
++      }
++      wuffs_base__image_config__set(
++          a_dst,
++          v_pixfmt,
++          0u,
++          self->private_impl.f_width,
++          self->private_impl.f_height,
++          self->private_impl.f_frame_config_io_position,
++          true);
++    }
++    self->private_impl.f_call_sequence = 32u;
++
++    goto ok;
++    ok:
++    self->private_impl.p_do_decode_image_config = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_do_decode_image_config.v_marker = v_marker;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func jpeg.decoder.decode_dqt
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_jpeg__decoder__decode_dqt(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_c8 = 0;
++  uint8_t v_q = 0;
++  uint32_t v_i = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_dqt;
++  if (coro_susp_point) {
++    v_q = self->private_data.s_decode_dqt.v_q;
++    v_i = self->private_data.s_decode_dqt.v_i;
++  }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (self->private_impl.f_payload_length > 0u) {
++      self->private_impl.f_payload_length -= 1u;
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_0 = *iop_a_src++;
++        v_c8 = t_0;
++      }
++      if (((uint8_t)(v_c8 & 15u)) > 3u) {
++        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dqt_marker);
++        goto exit;
++      }
++      v_q = ((uint8_t)(v_c8 & 15u));
++      if (((uint8_t)(v_c8 >> 4u)) == 1u) {
++        status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision);
++        goto exit;
++      } else if ((((uint8_t)(v_c8 >> 4u)) > 1u) || (self->private_impl.f_payload_length < 64u)) {
++        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dqt_marker);
++        goto exit;
++      }
++      self->private_impl.f_payload_length -= 64u;
++      v_i = 0u;
++      while (v_i < 64u) {
++        v_i += 1u;
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint16_t t_1 = *iop_a_src++;
++          self->private_impl.f_quant_tables[v_q][WUFFS_JPEG__UNZIG[v_i]] = t_1;
++        }
++      }
++      self->private_impl.f_seen_dqt[v_q] = true;
++      if (self->private_impl.f_sof_marker == 0u) {
++        v_i = 0u;
++        while (v_i < 64u) {
++          self->private_impl.f_saved_quant_tables[v_q][v_i] = self->private_impl.f_quant_tables[v_q][v_i];
++          v_i += 1u;
++        }
++        self->private_impl.f_saved_seen_dqt[v_q] = true;
++      }
++    }
++
++    goto ok;
++    ok:
++    self->private_impl.p_decode_dqt = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_dqt = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_dqt.v_q = v_q;
++  self->private_data.s_decode_dqt.v_i = v_i;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func jpeg.decoder.decode_dri
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_jpeg__decoder__decode_dri(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_dri;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_payload_length != 2u) {
++      status = wuffs_base__make_status(wuffs_jpeg__error__bad_dri_marker);
++      goto exit;
++    }
++    self->private_impl.f_payload_length = 0u;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      uint16_t t_0;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++        t_0 = wuffs_base__peek_u16be__no_bounds_check(iop_a_src);
++        iop_a_src += 2;
++      } else {
++        self->private_data.s_decode_dri.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_dri.scratch;
++          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
++          *scratch >>= 8;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
++          if (num_bits_0 == 8) {
++            t_0 = ((uint16_t)(*scratch >> 48));
++            break;
++          }
++          num_bits_0 += 8u;
++          *scratch |= ((uint64_t)(num_bits_0));
++        }
++      }
++      self->private_impl.f_restart_interval = t_0;
++    }
++    if (self->private_impl.f_sof_marker == 0u) {
++      self->private_impl.f_saved_restart_interval = self->private_impl.f_restart_interval;
++    }
++
++    goto ok;
++    ok:
++    self->private_impl.p_decode_dri = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_dri = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func jpeg.decoder.decode_appn
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_jpeg__decoder__decode_appn(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__io_buffer* a_src,
++    uint8_t a_marker) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_c8 = 0;
++  uint32_t v_c32 = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_appn;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    do {
++      if (a_marker == 224u) {
++        if (self->private_impl.f_payload_length >= 5u) {
++          self->private_impl.f_payload_length -= 5u;
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++            uint32_t t_0;
++            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++              t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++              iop_a_src += 4;
++            } else {
++              self->private_data.s_decode_appn.scratch = 0;
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++              while (true) {
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint64_t* scratch = &self->private_data.s_decode_appn.scratch;
++                uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
++                *scratch <<= 8;
++                *scratch >>= 8;
++                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
++                if (num_bits_0 == 24) {
++                  t_0 = ((uint32_t)(*scratch));
++                  break;
++                }
++                num_bits_0 += 8u;
++                *scratch |= ((uint64_t)(num_bits_0)) << 56;
++              }
++            }
++            v_c32 = t_0;
++          }
++          if (v_c32 != 1179207242u) {
++            self->private_impl.f_payload_length = (65535u & (self->private_impl.f_payload_length + 1u));
++            break;
++          }
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint8_t t_1 = *iop_a_src++;
++            v_c8 = t_1;
++          }
++          self->private_impl.f_is_jfif = (v_c8 == 0u);
++        }
++      } else if (a_marker == 238u) {
++        if (self->private_impl.f_payload_length >= 12u) {
++          self->private_impl.f_payload_length -= 12u;
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++            uint32_t t_2;
++            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++              t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++              iop_a_src += 4;
++            } else {
++              self->private_data.s_decode_appn.scratch = 0;
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++              while (true) {
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint64_t* scratch = &self->private_data.s_decode_appn.scratch;
++                uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
++                *scratch <<= 8;
++                *scratch >>= 8;
++                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
++                if (num_bits_2 == 24) {
++                  t_2 = ((uint32_t)(*scratch));
++                  break;
++                }
++                num_bits_2 += 8u;
++                *scratch |= ((uint64_t)(num_bits_2)) << 56;
++              }
++            }
++            v_c32 = t_2;
++          }
++          if (v_c32 != 1651467329u) {
++            self->private_impl.f_payload_length = (65535u & (self->private_impl.f_payload_length + 8u));
++            break;
++          }
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++            uint32_t t_3;
++            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++              t_3 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++              iop_a_src += 4;
++            } else {
++              self->private_data.s_decode_appn.scratch = 0;
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++              while (true) {
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint64_t* scratch = &self->private_data.s_decode_appn.scratch;
++                uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
++                *scratch <<= 8;
++                *scratch >>= 8;
++                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
++                if (num_bits_3 == 24) {
++                  t_3 = ((uint32_t)(*scratch));
++                  break;
++                }
++                num_bits_3 += 8u;
++                *scratch |= ((uint64_t)(num_bits_3)) << 56;
++              }
++            }
++            v_c32 = t_3;
++          }
++          if ((255u & v_c32) != 101u) {
++            self->private_impl.f_payload_length = (65535u & (self->private_impl.f_payload_length + 4u));
++            break;
++          }
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++            uint32_t t_4;
++            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++              t_4 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++              iop_a_src += 4;
++            } else {
++              self->private_data.s_decode_appn.scratch = 0;
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++              while (true) {
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint64_t* scratch = &self->private_data.s_decode_appn.scratch;
++                uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
++                *scratch <<= 8;
++                *scratch >>= 8;
++                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
++                if (num_bits_4 == 24) {
++                  t_4 = ((uint32_t)(*scratch));
++                  break;
++                }
++                num_bits_4 += 8u;
++                *scratch |= ((uint64_t)(num_bits_4)) << 56;
++              }
++            }
++            v_c32 = t_4;
++          }
++          if ((v_c32 >> 24u) == 0u) {
++            self->private_impl.f_is_adobe = 1u;
++          } else {
++            self->private_impl.f_is_adobe = 2u;
++          }
++        }
++      }
++    } while (0);
++    self->private_data.s_decode_appn.scratch = self->private_impl.f_payload_length;
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
++    if (self->private_data.s_decode_appn.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++      self->private_data.s_decode_appn.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++      iop_a_src = io2_a_src;
++      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++      goto suspend;
++    }
++    iop_a_src += self->private_data.s_decode_appn.scratch;
++    self->private_impl.f_payload_length = 0u;
++
++    goto ok;
++    ok:
++    self->private_impl.p_decode_appn = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_appn = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func jpeg.decoder.decode_sof
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_jpeg__decoder__decode_sof(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_c8 = 0;
++  uint8_t v_comp_h = 0;
++  uint8_t v_comp_v = 0;
++  uint32_t v_i = 0;
++  uint32_t v_j = 0;
++  bool v_has_h24 = false;
++  bool v_has_h3 = false;
++  bool v_has_v24 = false;
++  bool v_has_v3 = false;
++  uint32_t v_upper_bound = 0;
++  uint64_t v_wh0 = 0;
++  uint64_t v_wh1 = 0;
++  uint64_t v_wh2 = 0;
++  uint64_t v_wh3 = 0;
++  uint64_t v_progressive = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_sof;
++  if (coro_susp_point) {
++    v_i = self->private_data.s_decode_sof.v_i;
++  }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_payload_length < 6u) {
++      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
++      goto exit;
++    }
++    self->private_impl.f_payload_length -= 6u;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_0 = *iop_a_src++;
++      v_c8 = t_0;
++    }
++    if (v_c8 == 8u) {
++    } else if (v_c8 == 12u) {
++      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision_12_bits);
++      goto exit;
++    } else if (v_c8 == 16u) {
++      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision_16_bits);
++      goto exit;
++    } else {
++      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision);
++      goto exit;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++      uint32_t t_1;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++        t_1 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
++        iop_a_src += 2;
++      } else {
++        self->private_data.s_decode_sof.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_sof.scratch;
++          uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
++          *scratch >>= 8;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
++          if (num_bits_1 == 8) {
++            t_1 = ((uint32_t)(*scratch >> 48));
++            break;
++          }
++          num_bits_1 += 8u;
++          *scratch |= ((uint64_t)(num_bits_1));
++        }
++      }
++      self->private_impl.f_height = t_1;
++    }
++    if (self->private_impl.f_height == 0u) {
++      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_implicit_height);
++      goto exit;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++      uint32_t t_2;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++        t_2 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
++        iop_a_src += 2;
++      } else {
++        self->private_data.s_decode_sof.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_sof.scratch;
++          uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu));
++          *scratch >>= 8;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
++          if (num_bits_2 == 8) {
++            t_2 = ((uint32_t)(*scratch >> 48));
++            break;
++          }
++          num_bits_2 += 8u;
++          *scratch |= ((uint64_t)(num_bits_2));
++        }
++      }
++      self->private_impl.f_width = t_2;
++    }
++    if (self->private_impl.f_width == 0u) {
++      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
++      goto exit;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_3 = *iop_a_src++;
++      v_c8 = t_3;
++    }
++    if ((v_c8 == 0u) || (v_c8 > 4u)) {
++      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
++      goto exit;
++    } else if (v_c8 == 2u) {
++      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_color_model);
++      goto exit;
++    }
++    self->private_impl.f_num_components = ((uint32_t)(v_c8));
++    if (self->private_impl.f_payload_length != (3u * self->private_impl.f_num_components)) {
++      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
++      goto exit;
++    }
++    self->private_impl.f_payload_length = 0u;
++    v_i = 0u;
++    while (v_i < self->private_impl.f_num_components) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_4 = *iop_a_src++;
++        self->private_impl.f_components_c[v_i] = t_4;
++      }
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_5 = *iop_a_src++;
++        v_c8 = t_5;
++      }
++      v_comp_h = ((uint8_t)(v_c8 >> 4u));
++      v_comp_v = ((uint8_t)(v_c8 & 15u));
++      if ((v_comp_h == 0u) ||
++          (v_comp_h > 4u) ||
++          (v_comp_v == 0u) ||
++          (v_comp_v > 4u)) {
++        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
++        goto exit;
++      }
++      self->private_impl.f_components_h[v_i] = v_comp_h;
++      if (self->private_impl.f_max_incl_components_h < self->private_impl.f_components_h[v_i]) {
++        self->private_impl.f_max_incl_components_h = self->private_impl.f_components_h[v_i];
++      }
++      self->private_impl.f_components_v[v_i] = v_comp_v;
++      if (self->private_impl.f_max_incl_components_v < self->private_impl.f_components_v[v_i]) {
++        self->private_impl.f_max_incl_components_v = self->private_impl.f_components_v[v_i];
++      }
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_6 = *iop_a_src++;
++        v_c8 = t_6;
++      }
++      if (v_c8 >= 4u) {
++        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
++        goto exit;
++      }
++      self->private_impl.f_components_tq[v_i] = v_c8;
++      v_j = 0u;
++      while (v_j < v_i) {
++        if (self->private_impl.f_components_c[v_j] == self->private_impl.f_components_c[v_i]) {
++          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
++          goto exit;
++        }
++        v_j += 1u;
++      }
++      v_i += 1u;
++    }
++    if (self->private_impl.f_num_components == 1u) {
++      self->private_impl.f_max_incl_components_h = 1u;
++      self->private_impl.f_max_incl_components_v = 1u;
++      self->private_impl.f_components_h[0u] = 1u;
++      self->private_impl.f_components_v[0u] = 1u;
++    } else {
++      v_has_h24 = false;
++      v_has_h3 = false;
++      v_has_v24 = false;
++      v_has_v3 = false;
++      v_i = 0u;
++      while (v_i < self->private_impl.f_num_components) {
++        v_has_h24 = (v_has_h24 || (self->private_impl.f_components_h[v_i] == 2u) || (self->private_impl.f_components_h[v_i] == 4u));
++        v_has_h3 = (v_has_h3 || (self->private_impl.f_components_h[v_i] == 3u));
++        v_has_v24 = (v_has_v24 || (self->private_impl.f_components_v[v_i] == 2u) || (self->private_impl.f_components_v[v_i] == 4u));
++        v_has_v3 = (v_has_v3 || (self->private_impl.f_components_v[v_i] == 3u));
++        v_i += 1u;
++      }
++      if ((v_has_h24 && v_has_h3) || (v_has_v24 && v_has_v3)) {
++        status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_fractional_sampling);
++        goto exit;
++      }
++      if (self->private_impl.f_num_components == 4u) {
++        self->private_impl.f_is_rgb_or_cmyk = (self->private_impl.f_is_adobe < 2u);
++      } else {
++        if (self->private_impl.f_is_jfif) {
++          self->private_impl.f_is_rgb_or_cmyk = false;
++        } else if (self->private_impl.f_is_adobe > 0u) {
++          self->private_impl.f_is_rgb_or_cmyk = (self->private_impl.f_is_adobe == 1u);
++        } else {
++          self->private_impl.f_is_rgb_or_cmyk = ((self->private_impl.f_components_c[0u] == 82u) && (self->private_impl.f_components_c[1u] == 71u) && (self->private_impl.f_components_c[2u] == 66u));
++        }
++      }
++    }
++    self->private_impl.f_width_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_width, 1u, self->private_impl.f_max_incl_components_h);
++    self->private_impl.f_height_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_height, 1u, self->private_impl.f_max_incl_components_v);
++    v_upper_bound = 65544u;
++    self->private_impl.f_components_workbuf_widths[0u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[0u]))));
++    self->private_impl.f_components_workbuf_widths[1u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[1u]))));
++    self->private_impl.f_components_workbuf_widths[2u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[2u]))));
++    self->private_impl.f_components_workbuf_widths[3u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[3u]))));
++    self->private_impl.f_components_workbuf_heights[0u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[0u]))));
++    self->private_impl.f_components_workbuf_heights[1u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[1u]))));
++    self->private_impl.f_components_workbuf_heights[2u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[2u]))));
++    self->private_impl.f_components_workbuf_heights[3u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[3u]))));
++    v_wh0 = (((uint64_t)(self->private_impl.f_components_workbuf_widths[0u])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[0u])));
++    v_wh1 = (((uint64_t)(self->private_impl.f_components_workbuf_widths[1u])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[1u])));
++    v_wh2 = (((uint64_t)(self->private_impl.f_components_workbuf_widths[2u])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[2u])));
++    v_wh3 = (((uint64_t)(self->private_impl.f_components_workbuf_widths[3u])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[3u])));
++    v_progressive = 0u;
++    if (self->private_impl.f_sof_marker >= 194u) {
++      v_progressive = 2u;
++      v_i = 0u;
++      while (v_i < 4u) {
++        v_j = 0u;
++        while (v_j < 10u) {
++          self->private_impl.f_block_smoothing_lowest_scan_al[v_i][v_j] = 16u;
++          v_j += 1u;
++        }
++        v_i += 1u;
++      }
++    }
++    self->private_impl.f_components_workbuf_offsets[0u] = 0u;
++    self->private_impl.f_components_workbuf_offsets[1u] = (self->private_impl.f_components_workbuf_offsets[0u] + v_wh0);
++    self->private_impl.f_components_workbuf_offsets[2u] = (self->private_impl.f_components_workbuf_offsets[1u] + v_wh1);
++    self->private_impl.f_components_workbuf_offsets[3u] = (self->private_impl.f_components_workbuf_offsets[2u] + v_wh2);
++    self->private_impl.f_components_workbuf_offsets[4u] = (self->private_impl.f_components_workbuf_offsets[3u] + v_wh3);
++    self->private_impl.f_components_workbuf_offsets[5u] = (self->private_impl.f_components_workbuf_offsets[4u] + (v_wh0 * v_progressive));
++    self->private_impl.f_components_workbuf_offsets[6u] = (self->private_impl.f_components_workbuf_offsets[5u] + (v_wh1 * v_progressive));
++    self->private_impl.f_components_workbuf_offsets[7u] = (self->private_impl.f_components_workbuf_offsets[6u] + (v_wh2 * v_progressive));
++    self->private_impl.f_components_workbuf_offsets[8u] = (self->private_impl.f_components_workbuf_offsets[7u] + (v_wh3 * v_progressive));
++
++    goto ok;
++    ok:
++    self->private_impl.p_decode_sof = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_sof = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_sof.v_i = v_i;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func jpeg.decoder.quantize_dimension
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint32_t
++wuffs_jpeg__decoder__quantize_dimension(
++    const wuffs_jpeg__decoder* self,
++    uint32_t a_width,
++    uint8_t a_h,
++    uint8_t a_max_incl_h) {
++  uint32_t v_ratio = 0;
++
++  v_ratio = 0u;
++  if (a_h > 0u) {
++    v_ratio = ((uint32_t)(((uint8_t)(a_max_incl_h / a_h))));
++  }
++  if (v_ratio == 1u) {
++    return ((a_width + 7u) / 8u);
++  } else if (v_ratio == 2u) {
++    return ((a_width + 15u) / 16u);
++  } else if (v_ratio == 3u) {
++    return ((a_width + 23u) / 24u);
++  }
++  return ((a_width + 31u) / 32u);
++}
++
++// -------- func jpeg.decoder.decode_frame_config
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_jpeg__decoder__decode_frame_config(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 2)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_jpeg__decoder__do_decode_frame_config(self, a_dst, a_src);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_jpeg__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++
++    ok:
++    self->private_impl.p_decode_frame_config = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func jpeg.decoder.do_decode_frame_config
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_jpeg__decoder__do_decode_frame_config(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_call_sequence == 32u) {
++    } else if (self->private_impl.f_call_sequence < 32u) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      status = wuffs_jpeg__decoder__do_decode_image_config(self, NULL, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++    } else if (self->private_impl.f_call_sequence == 40u) {
++      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
++        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
++        goto exit;
++      }
++    } else if (self->private_impl.f_call_sequence == 64u) {
++      self->private_impl.f_call_sequence = 96u;
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
++    } else {
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
++    }
++    if (a_dst != NULL) {
++      wuffs_base__frame_config__set(
++          a_dst,
++          wuffs_base__utility__make_rect_ie_u32(
++          0u,
++          0u,
++          self->private_impl.f_width,
++          self->private_impl.f_height),
++          ((wuffs_base__flicks)(0u)),
++          0u,
++          self->private_impl.f_frame_config_io_position,
++          0u,
++          true,
++          false,
++          4278190080u);
++    }
++    self->private_impl.f_call_sequence = 64u;
++
++    ok:
++    self->private_impl.p_do_decode_frame_config = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func jpeg.decoder.decode_frame
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_jpeg__decoder__decode_frame(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_dst || !a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 3)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__status v_ddf_status = wuffs_base__make_status(NULL);
++  wuffs_base__status v_swizzle_status = wuffs_base__make_status(NULL);
++  uint32_t v_scan_count = 0;
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_frame;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      v_scan_count = self->private_impl.f_scan_count;
++      {
++        wuffs_base__status t_0 = wuffs_jpeg__decoder__do_decode_frame(self,
++            a_dst,
++            a_src,
++            a_blend,
++            a_workbuf,
++            a_opts);
++        v_ddf_status = t_0;
++      }
++      if ((v_ddf_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        v_ddf_status = wuffs_base__make_status(wuffs_jpeg__error__truncated_input);
++      }
++      if ( ! self->private_impl.f_swizzle_immediately && (wuffs_base__status__is_error(&v_ddf_status) || (v_scan_count < self->private_impl.f_scan_count))) {
++        if (self->private_impl.f_sof_marker >= 194u) {
++          wuffs_jpeg__decoder__apply_progressive_idct(self, a_workbuf);
++        }
++        if (self->private_impl.f_num_components == 1u) {
++          v_swizzle_status = wuffs_jpeg__decoder__swizzle_gray(self,
++              a_dst,
++              a_workbuf,
++              0u,
++              4294967295u,
++              0u,
++              4294967295u,
++              ((uint64_t)(self->private_impl.f_components_workbuf_widths[0u])));
++        } else {
++          v_swizzle_status = wuffs_jpeg__decoder__swizzle_colorful(self,
++              a_dst,
++              a_workbuf,
++              0u,
++              4294967295u,
++              0u,
++              4294967295u);
++        }
++        if (wuffs_base__status__is_error(&v_ddf_status)) {
++          status = v_ddf_status;
++          goto exit;
++        } else if (wuffs_base__status__is_error(&v_swizzle_status)) {
++          status = v_swizzle_status;
++          goto exit;
++        }
++      }
++      status = v_ddf_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++
++    ok:
++    self->private_impl.p_decode_frame = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func jpeg.decoder.do_decode_frame
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_jpeg__decoder__do_decode_frame(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint32_t v_pixfmt = 0;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++  uint8_t v_c8 = 0;
++  uint8_t v_marker = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame;
++  if (coro_susp_point) {
++    v_marker = self->private_data.s_do_decode_frame.v_marker;
++  }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_call_sequence == 64u) {
++    } else if (self->private_impl.f_call_sequence < 64u) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      status = wuffs_jpeg__decoder__do_decode_frame_config(self, NULL, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++    } else {
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
++    }
++    v_pixfmt = 536870920u;
++    if (self->private_impl.f_num_components > 1u) {
++      v_pixfmt = 2415954056u;
++    }
++    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
++        wuffs_base__pixel_buffer__pixel_format(a_dst),
++        wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
++        wuffs_base__utility__make_pixel_format(v_pixfmt),
++        wuffs_base__utility__empty_slice_u8(),
++        a_blend);
++    if ( ! wuffs_base__status__is_ok(&v_status)) {
++      status = v_status;
++      if (wuffs_base__status__is_error(&status)) {
++        goto exit;
++      } else if (wuffs_base__status__is_suspension(&status)) {
++        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++        goto exit;
++      }
++      goto ok;
++    }
++    self->private_impl.f_swizzle_immediately = false;
++    if (self->private_impl.f_components_workbuf_offsets[8u] > ((uint64_t)(a_workbuf.len))) {
++      if (self->private_impl.f_sof_marker >= 194u) {
++        status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
++        goto exit;
++      }
++      self->private_impl.f_swizzle_immediately = self->private_impl.f_use_lower_quality;
++      self->private_impl.f_swizzle_immediately_status = wuffs_base__make_status(NULL);
++    } else if (self->private_impl.f_components_workbuf_offsets[4u] < self->private_impl.f_components_workbuf_offsets[8u]) {
++      wuffs_private_impl__bulk_memset(a_workbuf.ptr + self->private_impl.f_components_workbuf_offsets[4u], (self->private_impl.f_components_workbuf_offsets[8u] - self->private_impl.f_components_workbuf_offsets[4u]), 0u);
++    }
++    if (self->private_impl.f_components_workbuf_offsets[4u] <= ((uint64_t)(a_workbuf.len))) {
++      wuffs_private_impl__bulk_memset(a_workbuf.ptr, self->private_impl.f_components_workbuf_offsets[4u], 128u);
++    }
++    while (true) {
++      while (true) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_0 = *iop_a_src++;
++          v_c8 = t_0;
++        }
++        if (v_c8 == 255u) {
++          break;
++        }
++      }
++      while (true) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_1 = *iop_a_src++;
++          v_c8 = t_1;
++        }
++        if (v_c8 != 255u) {
++          v_marker = v_c8;
++          break;
++        }
++      }
++      if (v_marker == 0u) {
++        continue;
++      } else if ((208u <= v_marker) && (v_marker <= 217u)) {
++        if (v_marker <= 215u) {
++          continue;
++        }
++      } else {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++          uint32_t t_2;
++          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++            t_2 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
++            iop_a_src += 2;
++          } else {
++            self->private_data.s_do_decode_frame.scratch = 0;
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++            while (true) {
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint64_t* scratch = &self->private_data.s_do_decode_frame.scratch;
++              uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu));
++              *scratch >>= 8;
++              *scratch <<= 8;
++              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
++              if (num_bits_2 == 8) {
++                t_2 = ((uint32_t)(*scratch >> 48));
++                break;
++              }
++              num_bits_2 += 8u;
++              *scratch |= ((uint64_t)(num_bits_2));
++            }
++          }
++          self->private_impl.f_payload_length = t_2;
++        }
++        if (self->private_impl.f_payload_length < 2u) {
++          status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker);
++          goto exit;
++        }
++        self->private_impl.f_payload_length -= 2u;
++      }
++      if (v_marker < 192u) {
++        status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
++        goto exit;
++      } else if (v_marker < 208u) {
++        if (v_marker == 196u) {
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++          status = wuffs_jpeg__decoder__decode_dht(self, a_src);
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++          if (status.repr) {
++            goto suspend;
++          }
++          continue;
++        } else if (v_marker == 200u) {
++          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
++          goto exit;
++        }
++        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
++        goto exit;
++      } else if (v_marker < 224u) {
++        if (v_marker < 217u) {
++          status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker);
++          goto exit;
++        } else if (v_marker == 217u) {
++          break;
++        } else if (v_marker == 218u) {
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++          status = wuffs_jpeg__decoder__decode_sos(self, a_dst, a_src, a_workbuf);
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++          if (status.repr) {
++            goto suspend;
++          }
++          continue;
++        } else if (v_marker == 219u) {
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++          status = wuffs_jpeg__decoder__decode_dqt(self, a_src);
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++          if (status.repr) {
++            goto suspend;
++          }
++          continue;
++        } else if (v_marker == 221u) {
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++          status = wuffs_jpeg__decoder__decode_dri(self, a_src);
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++          if (status.repr) {
++            goto suspend;
++          }
++          continue;
++        } else {
++          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
++          goto exit;
++        }
++      } else if (v_marker < 240u) {
++      } else {
++        if (v_marker == 254u) {
++        } else {
++          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
++          goto exit;
++        }
++      }
++      self->private_data.s_do_decode_frame.scratch = self->private_impl.f_payload_length;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
++      if (self->private_data.s_do_decode_frame.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++        self->private_data.s_do_decode_frame.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++        iop_a_src = io2_a_src;
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      iop_a_src += self->private_data.s_do_decode_frame.scratch;
++      self->private_impl.f_payload_length = 0u;
++    }
++    self->private_impl.f_call_sequence = 96u;
++
++    ok:
++    self->private_impl.p_do_decode_frame = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_do_decode_frame.v_marker = v_marker;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func jpeg.decoder.decode_dht
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_jpeg__decoder__decode_dht(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_c8 = 0;
++  uint8_t v_tc = 0;
++  uint8_t v_th = 0;
++  uint8_t v_tc4_th = 0;
++  uint32_t v_working_total_count = 0;
++  uint32_t v_total_count = 0;
++  uint32_t v_i = 0;
++  bool v_failed = false;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_dht;
++  if (coro_susp_point) {
++    v_tc4_th = self->private_data.s_decode_dht.v_tc4_th;
++    v_total_count = self->private_data.s_decode_dht.v_total_count;
++    v_i = self->private_data.s_decode_dht.v_i;
++  }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_sof_marker == 0u) {
++      status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
++      goto exit;
++    }
++    while (self->private_impl.f_payload_length > 0u) {
++      if (self->private_impl.f_payload_length < 17u) {
++        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
++        goto exit;
++      }
++      self->private_impl.f_payload_length -= 17u;
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_0 = *iop_a_src++;
++        v_c8 = t_0;
++      }
++      if ((((uint8_t)(v_c8 >> 4u)) > 1u) || (((uint8_t)(v_c8 & 15u)) > 3u)) {
++        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
++        goto exit;
++      }
++      v_tc = ((uint8_t)(v_c8 >> 4u));
++      v_th = ((uint8_t)(v_c8 & 15u));
++      v_tc4_th = ((uint8_t)(((uint8_t)(((uint8_t)(v_tc * 4u)) | v_th))));
++      if ((self->private_impl.f_sof_marker == 192u) && (((uint8_t)(v_tc4_th & 3u)) > 1u)) {
++        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
++        goto exit;
++      }
++      v_i = 0u;
++      while (v_i < 16u) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_1 = *iop_a_src++;
++          self->private_data.f_dht_temp_counts[v_i] = t_1;
++        }
++        v_i += 1u;
++      }
++      v_working_total_count = 0u;
++      v_i = 0u;
++      while (v_i < 16u) {
++        v_working_total_count = ((v_working_total_count + ((uint32_t)(self->private_data.f_dht_temp_counts[v_i]))) & 65535u);
++        v_i += 1u;
++      }
++      if ((v_working_total_count <= 0u) || (256u < v_working_total_count)) {
++        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
++        goto exit;
++      }
++      v_total_count = v_working_total_count;
++      if (self->private_impl.f_payload_length < v_total_count) {
++        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
++        goto exit;
++      }
++      self->private_impl.f_payload_length -= v_total_count;
++      v_i = 0u;
++      while (v_i < v_total_count) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_2 = *iop_a_src++;
++          self->private_impl.f_huff_tables_symbols[v_tc4_th][v_i] = t_2;
++        }
++        v_i += 1u;
++      }
++      while (v_i < 256u) {
++        self->private_impl.f_huff_tables_symbols[v_tc4_th][v_i] = 0u;
++        v_i += 1u;
++      }
++      if (((uint8_t)(v_tc4_th & 4u)) == 0u) {
++        v_i = 0u;
++        while (v_i < v_total_count) {
++          if (self->private_impl.f_huff_tables_symbols[v_tc4_th][v_i] > 15u) {
++            status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
++            goto exit;
++          }
++          v_i += 1u;
++        }
++      }
++      v_failed = wuffs_jpeg__decoder__calculate_huff_tables(self, v_tc4_th, v_total_count);
++      if (v_failed) {
++        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
++        goto exit;
++      }
++      self->private_impl.f_seen_dht[v_tc4_th] = true;
++    }
++
++    goto ok;
++    ok:
++    self->private_impl.p_decode_dht = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_dht = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_dht.v_tc4_th = v_tc4_th;
++  self->private_data.s_decode_dht.v_total_count = v_total_count;
++  self->private_data.s_decode_dht.v_i = v_i;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func jpeg.decoder.calculate_huff_tables
++
++WUFFS_BASE__GENERATED_C_CODE
++static bool
++wuffs_jpeg__decoder__calculate_huff_tables(
++    wuffs_jpeg__decoder* self,
++    uint8_t a_tc4_th,
++    uint32_t a_total_count) {
++  uint32_t v_i = 0;
++  uint8_t v_j = 0;
++  uint8_t v_k = 0;
++  uint32_t v_bit_length_minus_one = 0;
++  uint8_t v_bit_length = 0;
++  uint32_t v_bit_string = 0;
++  uint32_t v_slow = 0;
++  uint8_t v_prefix = 0;
++  uint16_t v_fast = 0;
++  uint32_t v_reps = 0;
++
++  v_i = 0u;
++  v_k = 0u;
++  v_bit_length_minus_one = 0u;
++  while (v_i < a_total_count) {
++    while (v_k >= self->private_data.f_dht_temp_counts[v_bit_length_minus_one]) {
++      v_k = 0u;
++      v_bit_length_minus_one = ((v_bit_length_minus_one + 1u) & 15u);
++    }
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++    v_k += 1u;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++    self->private_data.f_dht_temp_bit_lengths[v_i] = ((uint8_t)((v_bit_length_minus_one + 1u)));
++    v_i += 1u;
++  }
++  v_bit_length = 0u;
++  v_bit_string = 0u;
++  v_i = 0u;
++  while (v_i < a_total_count) {
++    while (v_bit_length < self->private_data.f_dht_temp_bit_lengths[v_i]) {
++      if (v_bit_length >= 16u) {
++        return true;
++      }
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++      v_bit_length += 1u;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++      v_bit_string <<= 1u;
++    }
++    self->private_data.f_dht_temp_bit_strings[v_i] = ((uint16_t)(v_bit_string));
++    v_bit_string += 1u;
++    if ((v_bit_string >> v_bit_length) > 0u) {
++      return true;
++    }
++    v_i += 1u;
++  }
++  v_k = 0u;
++  v_bit_length_minus_one = 0u;
++  while (true) {
++    if (self->private_data.f_dht_temp_counts[v_bit_length_minus_one] == 0u) {
++      self->private_impl.f_huff_tables_slow[a_tc4_th][v_bit_length_minus_one] = 0u;
++    } else {
++      v_slow = (255u & ((uint32_t)(((uint32_t)(v_k)) - ((uint32_t)(self->private_data.f_dht_temp_bit_strings[v_k])))));
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++      v_k += self->private_data.f_dht_temp_counts[v_bit_length_minus_one];
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++      self->private_impl.f_huff_tables_slow[a_tc4_th][v_bit_length_minus_one] = (v_slow | ((((uint32_t)(self->private_data.f_dht_temp_bit_strings[((uint8_t)(v_k - 1u))])) + 1u) << 8u));
++    }
++    v_bit_length_minus_one = ((v_bit_length_minus_one + 1u) & 15u);
++    if (v_bit_length_minus_one == 0u) {
++      break;
++    }
++  }
++  v_i = 0u;
++  while (v_i < 256u) {
++    self->private_impl.f_huff_tables_fast[a_tc4_th][v_i] = 65535u;
++    v_i += 1u;
++  }
++  v_j = 0u;
++  v_bit_length_minus_one = 0u;
++  while (v_bit_length_minus_one < 8u) {
++    v_k = 0u;
++    while (v_k < self->private_data.f_dht_temp_counts[v_bit_length_minus_one]) {
++      v_prefix = ((uint8_t)((((uint32_t)(self->private_data.f_dht_temp_bit_strings[v_j])) << (7u - v_bit_length_minus_one))));
++      v_fast = ((uint16_t)(((((uint32_t)((v_bit_length_minus_one + 1u))) << 8u) | ((uint32_t)(self->private_impl.f_huff_tables_symbols[a_tc4_th][v_j])))));
++      v_reps = (((uint32_t)(1u)) << (7u - v_bit_length_minus_one));
++      while (v_reps > 0u) {
++        self->private_impl.f_huff_tables_fast[a_tc4_th][v_prefix] = v_fast;
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        v_prefix += 1u;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++        v_reps -= 1u;
++      }
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++      v_k += 1u;
++      v_j += 1u;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++    }
++    v_bit_length_minus_one += 1u;
++  }
++  return false;
++}
++
++// -------- func jpeg.decoder.decode_sos
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_jpeg__decoder__decode_sos(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint32_t v_my = 0;
++  uint32_t v_mx = 0;
++  uint32_t v_decode_mcu_result = 0;
++  uint32_t v_bitstream_length = 0;
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_sos;
++  if (coro_susp_point) {
++    v_my = self->private_data.s_decode_sos.v_my;
++    v_mx = self->private_data.s_decode_sos.v_mx;
++  }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_scan_count >= 32u) {
++      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_scan_count);
++      goto exit;
++    } else if ((self->private_impl.f_scan_count > 0u) &&  ! self->private_impl.f_expect_multiple_scans) {
++      status = wuffs_base__make_status(wuffs_jpeg__error__bad_scan_count);
++      goto exit;
++    }
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++    status = wuffs_jpeg__decoder__prepare_scan(self, a_src);
++    if (status.repr) {
++      goto suspend;
++    }
++    self->private_impl.f_next_restart_marker = 0u;
++    self->private_impl.f_mcu_previous_dc_values[0u] = 0u;
++    self->private_impl.f_mcu_previous_dc_values[1u] = 0u;
++    self->private_impl.f_mcu_previous_dc_values[2u] = 0u;
++    self->private_impl.f_mcu_previous_dc_values[3u] = 0u;
++    self->private_impl.f_restarts_remaining = self->private_impl.f_restart_interval;
++    self->private_impl.f_eob_run = 0u;
++    self->private_impl.f_bitstream_bits = 0u;
++    self->private_impl.f_bitstream_n_bits = 0u;
++    self->private_impl.f_bitstream_ri = 0u;
++    self->private_impl.f_bitstream_wi = 0u;
++    self->private_impl.f_bitstream_padding = 12345u;
++    wuffs_jpeg__decoder__fill_bitstream(self, a_src);
++    v_my = 0u;
++    while (v_my < self->private_impl.f_scan_height_in_mcus) {
++      v_mx = 0u;
++      while (v_mx < self->private_impl.f_scan_width_in_mcus) {
++        self->private_impl.f_mcu_current_block = 0u;
++        self->private_impl.f_mcu_zig_index = ((uint32_t)(self->private_impl.f_scan_ss));
++        if (self->private_impl.f_sof_marker >= 194u) {
++          wuffs_jpeg__decoder__load_mcu_blocks(self, v_mx, v_my, a_workbuf);
++        }
++        while (true) {
++          v_decode_mcu_result = wuffs_jpeg__decoder__decode_mcu(self,
++              a_dst,
++              a_workbuf,
++              v_mx,
++              v_my);
++          if (v_decode_mcu_result == 0u) {
++            break;
++          } else if (v_decode_mcu_result == 1u) {
++          } else if (v_decode_mcu_result == 2u) {
++            status = wuffs_base__make_status(wuffs_jpeg__error__internal_error_inconsistent_decoder_state);
++            goto exit;
++          } else {
++            status = self->private_impl.f_swizzle_immediately_status;
++            if (wuffs_base__status__is_error(&status)) {
++              goto exit;
++            } else if (wuffs_base__status__is_suspension(&status)) {
++              status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++              goto exit;
++            }
++            goto ok;
++          }
++          while (true) {
++            v_bitstream_length = ((uint32_t)(self->private_impl.f_bitstream_wi - self->private_impl.f_bitstream_ri));
++            wuffs_jpeg__decoder__fill_bitstream(self, a_src);
++            if (v_bitstream_length < ((uint32_t)(self->private_impl.f_bitstream_wi - self->private_impl.f_bitstream_ri))) {
++              break;
++            } else if (self->private_impl.f_bitstream_padding == 0u) {
++              status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
++              goto exit;
++            } else if ((a_src && a_src->meta.closed) &&  ! self->private_impl.f_bitstream_is_closed) {
++              if (self->private_impl.f_bitstream_wi < 1024u) {
++                wuffs_private_impl__bulk_memset(&self->private_data.f_bitstream_buffer[self->private_impl.f_bitstream_wi], 264u, 0u);
++                self->private_impl.f_bitstream_wi += 264u;
++                self->private_impl.f_bitstream_is_closed = true;
++              }
++              break;
++            }
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
++          }
++        }
++        if (self->private_impl.f_sof_marker >= 194u) {
++          wuffs_jpeg__decoder__save_mcu_blocks(self, v_mx, v_my, a_workbuf);
++        }
++        if (self->private_impl.f_restarts_remaining > 0u) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++          self->private_impl.f_restarts_remaining -= 1u;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++          if (self->private_impl.f_restarts_remaining == 0u) {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++            status = wuffs_jpeg__decoder__skip_past_the_next_restart_marker(self, a_src);
++            if (status.repr) {
++              goto suspend;
++            }
++            self->private_impl.f_mcu_previous_dc_values[0u] = 0u;
++            self->private_impl.f_mcu_previous_dc_values[1u] = 0u;
++            self->private_impl.f_mcu_previous_dc_values[2u] = 0u;
++            self->private_impl.f_mcu_previous_dc_values[3u] = 0u;
++            self->private_impl.f_restarts_remaining = self->private_impl.f_restart_interval;
++            self->private_impl.f_eob_run = 0u;
++            self->private_impl.f_bitstream_bits = 0u;
++            self->private_impl.f_bitstream_n_bits = 0u;
++            self->private_impl.f_bitstream_ri = 0u;
++            self->private_impl.f_bitstream_wi = 0u;
++            self->private_impl.f_bitstream_padding = 12345u;
++          }
++        }
++        v_mx += 1u;
++      }
++      v_my += 1u;
++    }
++    wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_scan_count, 1u);
++
++    ok:
++    self->private_impl.p_decode_sos = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_sos = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_sos.v_my = v_my;
++  self->private_data.s_decode_sos.v_mx = v_mx;
++
++  goto exit;
++  exit:
++  return status;
++}
++
++// -------- func jpeg.decoder.prepare_scan
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_jpeg__decoder__prepare_scan(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_c8 = 0;
++  uint32_t v_i = 0;
++  uint32_t v_j = 0;
++  uint32_t v_j_max_incl = 0;
++  bool v_failed = false;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_prepare_scan;
++  if (coro_susp_point) {
++    v_i = self->private_data.s_prepare_scan.v_i;
++  }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if ((self->private_impl.f_payload_length < 6u) || (self->private_impl.f_payload_length > 12u)) {
++      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
++      goto exit;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_0 = *iop_a_src++;
++      v_c8 = t_0;
++    }
++    if ((v_c8 < 1u) || (v_c8 > 4u)) {
++      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
++      goto exit;
++    }
++    self->private_impl.f_scan_num_components = ((uint32_t)(v_c8));
++    if ((self->private_impl.f_scan_num_components > self->private_impl.f_num_components) || (self->private_impl.f_payload_length != (4u + (2u * self->private_impl.f_scan_num_components)))) {
++      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
++      goto exit;
++    }
++    self->private_impl.f_payload_length = 0u;
++    v_i = 0u;
++    while (v_i < self->private_impl.f_scan_num_components) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_1 = *iop_a_src++;
++        v_c8 = t_1;
++      }
++      v_j = 0u;
++      while (true) {
++        if (v_j >= self->private_impl.f_num_components) {
++          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
++          goto exit;
++        }
++        if (v_c8 == self->private_impl.f_components_c[v_j]) {
++          if ( ! self->private_impl.f_seen_dqt[self->private_impl.f_components_tq[v_j]]) {
++            status = wuffs_base__make_status(wuffs_jpeg__error__missing_quantization_table);
++            goto exit;
++          }
++          self->private_impl.f_scan_comps_cselector[v_i] = ((uint8_t)(v_j));
++          break;
++        }
++        v_j += 1u;
++      }
++      v_j = 0u;
++      while (v_j < v_i) {
++        if (self->private_impl.f_scan_comps_cselector[v_i] == self->private_impl.f_scan_comps_cselector[v_j]) {
++          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
++          goto exit;
++        }
++        v_j += 1u;
++      }
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_2 = *iop_a_src++;
++        v_c8 = t_2;
++      }
++      if ((((uint8_t)(v_c8 >> 4u)) > 3u) || (((uint8_t)(v_c8 & 15u)) > 3u)) {
++        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
++        goto exit;
++      }
++      self->private_impl.f_scan_comps_td[v_i] = ((uint8_t)(v_c8 >> 4u));
++      self->private_impl.f_scan_comps_ta[v_i] = ((uint8_t)(v_c8 & 15u));
++      if (self->private_impl.f_sof_marker == 192u) {
++        if ((self->private_impl.f_scan_comps_td[v_i] > 1u) || (self->private_impl.f_scan_comps_ta[v_i] > 1u)) {
++          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
++          goto exit;
++        }
++      }
++      v_i += 1u;
++    }
++    if (self->private_impl.f_scan_count == 0u) {
++      self->private_impl.f_expect_multiple_scans = ((self->private_impl.f_sof_marker >= 194u) || (self->private_impl.f_scan_num_components < self->private_impl.f_num_components));
++    }
++    if (self->private_impl.f_sof_marker < 194u) {
++      self->private_data.s_prepare_scan.scratch = 3u;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++      if (self->private_data.s_prepare_scan.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++        self->private_data.s_prepare_scan.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++        iop_a_src = io2_a_src;
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      iop_a_src += self->private_data.s_prepare_scan.scratch;
++      self->private_impl.f_scan_ss = 0u;
++      self->private_impl.f_scan_se = 63u;
++      self->private_impl.f_scan_ah = 0u;
++      self->private_impl.f_scan_al = 0u;
++    } else {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_3 = *iop_a_src++;
++        v_c8 = t_3;
++      }
++      if (v_c8 > 63u) {
++        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
++        goto exit;
++      }
++      self->private_impl.f_scan_ss = v_c8;
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_4 = *iop_a_src++;
++        v_c8 = t_4;
++      }
++      if ((v_c8 > 63u) || (v_c8 < self->private_impl.f_scan_ss)) {
++        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
++        goto exit;
++      }
++      self->private_impl.f_scan_se = v_c8;
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_5 = *iop_a_src++;
++        v_c8 = t_5;
++      }
++      if ((((uint8_t)(v_c8 >> 4u)) > 14u) || (((uint8_t)(v_c8 & 15u)) > 13u)) {
++        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
++        goto exit;
++      }
++      self->private_impl.f_scan_ah = ((uint8_t)(v_c8 >> 4u));
++      self->private_impl.f_scan_al = ((uint8_t)(v_c8 & 15u));
++      if (self->private_impl.f_scan_ah > 0u) {
++        if (((uint8_t)(self->private_impl.f_scan_ah - 1u)) != self->private_impl.f_scan_al) {
++          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
++          goto exit;
++        }
++      }
++      if (self->private_impl.f_scan_ss == 0u) {
++        if (self->private_impl.f_scan_se != 0u) {
++          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
++          goto exit;
++        } else if (self->private_impl.f_scan_ah == 0u) {
++          self->private_impl.choosy_decode_mcu = (
++              &wuffs_jpeg__decoder__decode_mcu_progressive_dc_high_bits);
++        } else {
++          self->private_impl.choosy_decode_mcu = (
++              &wuffs_jpeg__decoder__decode_mcu_progressive_dc_low_bit);
++        }
++      } else {
++        if (self->private_impl.f_scan_num_components != 1u) {
++          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
++          goto exit;
++        } else if (self->private_impl.f_scan_ah == 0u) {
++          self->private_impl.choosy_decode_mcu = (
++              &wuffs_jpeg__decoder__decode_mcu_progressive_ac_high_bits);
++        } else {
++          self->private_impl.choosy_decode_mcu = (
++              &wuffs_jpeg__decoder__decode_mcu_progressive_ac_low_bit);
++        }
++      }
++    }
++    v_i = 0u;
++    while (v_i < self->private_impl.f_scan_num_components) {
++      if ((self->private_impl.f_scan_ss == 0u) &&  ! self->private_impl.f_seen_dht[((uint8_t)(0u | self->private_impl.f_scan_comps_td[v_i]))]) {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++        status = wuffs_jpeg__decoder__use_default_huffman_table(self, ((uint8_t)(0u | self->private_impl.f_scan_comps_td[v_i])));
++        if (status.repr) {
++          goto suspend;
++        }
++      }
++      if ((self->private_impl.f_scan_se != 0u) &&  ! self->private_impl.f_seen_dht[((uint8_t)(4u | self->private_impl.f_scan_comps_ta[v_i]))]) {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++        status = wuffs_jpeg__decoder__use_default_huffman_table(self, ((uint8_t)(4u | self->private_impl.f_scan_comps_ta[v_i])));
++        if (status.repr) {
++          goto suspend;
++        }
++      }
++      v_j = ((uint32_t)(self->private_impl.f_scan_ss));
++      v_j_max_incl = ((uint32_t)(wuffs_base__u8__min(self->private_impl.f_scan_se, 9u)));
++      while (v_j <= v_j_max_incl) {
++        self->private_impl.f_block_smoothing_lowest_scan_al[self->private_impl.f_scan_comps_cselector[v_i]][v_j] = self->private_impl.f_scan_al;
++        v_j += 1u;
++      }
++      v_i += 1u;
++    }
++    if (self->private_impl.f_scan_num_components == 1u) {
++      wuffs_jpeg__decoder__calculate_single_component_scan_fields(self);
++    } else {
++      v_failed = wuffs_jpeg__decoder__calculate_multiple_component_scan_fields(self);
++      if (v_failed) {
++        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
++        goto exit;
++      }
++    }
++
++    goto ok;
++    ok:
++    self->private_impl.p_prepare_scan = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_prepare_scan = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_prepare_scan.v_i = v_i;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func jpeg.decoder.use_default_huffman_table
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_jpeg__decoder__use_default_huffman_table(
++    wuffs_jpeg__decoder* self,
++    uint8_t a_tc4_th) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__slice_u8 v_data = {0};
++  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
++  wuffs_base__io_buffer* v_r = &u_r;
++  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  if (a_tc4_th == 0u) {
++    v_data = wuffs_base__make_slice_u8(wuffs_base__strip_const_from_u8_ptr(WUFFS_JPEG__DEFAULT_HUFF_TABLE_DC_LUMA), 29);
++  } else if (a_tc4_th == 1u) {
++    v_data = wuffs_base__make_slice_u8(wuffs_base__strip_const_from_u8_ptr(WUFFS_JPEG__DEFAULT_HUFF_TABLE_DC_CHROMA), 29);
++  } else if (a_tc4_th == 4u) {
++    v_data = wuffs_base__make_slice_u8(wuffs_base__strip_const_from_u8_ptr(WUFFS_JPEG__DEFAULT_HUFF_TABLE_AC_LUMA), 179);
++  } else if (a_tc4_th == 5u) {
++    v_data = wuffs_base__make_slice_u8(wuffs_base__strip_const_from_u8_ptr(WUFFS_JPEG__DEFAULT_HUFF_TABLE_AC_CHROMA), 179);
++  } else {
++    status = wuffs_base__make_status(wuffs_jpeg__error__missing_huffman_table);
++    goto exit;
++  }
++  {
++    wuffs_base__io_buffer* o_0_v_r = v_r;
++    const uint8_t* o_0_iop_v_r = iop_v_r;
++    const uint8_t* o_0_io0_v_r = io0_v_r;
++    const uint8_t* o_0_io1_v_r = io1_v_r;
++    const uint8_t* o_0_io2_v_r = io2_v_r;
++    v_r = wuffs_private_impl__io_reader__set(
++        &u_r,
++        &iop_v_r,
++        &io0_v_r,
++        &io1_v_r,
++        &io2_v_r,
++        v_data,
++        0u);
++    self->private_impl.f_payload_length = ((uint32_t)((((uint64_t)(v_data.len)) & 65535u)));
++    {
++      wuffs_base__status t_0 = wuffs_jpeg__decoder__decode_dht(self, v_r);
++      v_status = t_0;
++    }
++    v_r = o_0_v_r;
++    iop_v_r = o_0_iop_v_r;
++    io0_v_r = o_0_io0_v_r;
++    io1_v_r = o_0_io1_v_r;
++    io2_v_r = o_0_io2_v_r;
++  }
++  status = v_status;
++  if (wuffs_base__status__is_error(&status)) {
++    goto exit;
++  } else if (wuffs_base__status__is_suspension(&status)) {
++    status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++    goto exit;
++  }
++  goto ok;
++
++  ok:
++  goto exit;
++  exit:
++  return status;
++}
++
++// -------- func jpeg.decoder.calculate_single_component_scan_fields
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_jpeg__decoder__calculate_single_component_scan_fields(
++    wuffs_jpeg__decoder* self) {
++  uint8_t v_csel = 0;
++
++  self->private_impl.f_scan_comps_bx_offset[0u] = 0u;
++  self->private_impl.f_scan_comps_by_offset[0u] = 0u;
++  self->private_impl.f_mcu_num_blocks = 1u;
++  self->private_impl.f_mcu_blocks_sselector[0u] = 0u;
++  v_csel = self->private_impl.f_scan_comps_cselector[0u];
++  self->private_impl.f_mcu_blocks_offset[0u] = self->private_impl.f_components_workbuf_offsets[v_csel];
++  self->private_impl.f_mcu_blocks_mx_mul[0u] = 8u;
++  self->private_impl.f_mcu_blocks_my_mul[0u] = (8u * self->private_impl.f_components_workbuf_widths[v_csel]);
++  self->private_impl.f_mcu_blocks_dc_hselector[0u] = ((uint8_t)(0u | self->private_impl.f_scan_comps_td[0u]));
++  self->private_impl.f_mcu_blocks_ac_hselector[0u] = ((uint8_t)(4u | self->private_impl.f_scan_comps_ta[0u]));
++  self->private_impl.f_scan_width_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_width, self->private_impl.f_components_h[v_csel], self->private_impl.f_max_incl_components_h);
++  self->private_impl.f_scan_height_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_height, self->private_impl.f_components_v[v_csel], self->private_impl.f_max_incl_components_v);
++  return wuffs_base__make_empty_struct();
++}
++
++// -------- func jpeg.decoder.calculate_multiple_component_scan_fields
++
++WUFFS_BASE__GENERATED_C_CODE
++static bool
++wuffs_jpeg__decoder__calculate_multiple_component_scan_fields(
++    wuffs_jpeg__decoder* self) {
++  uint32_t v_i = 0;
++  uint32_t v_h = 0;
++  uint32_t v_v = 0;
++  uint32_t v_hv = 0;
++  uint32_t v_total_hv = 0;
++  uint32_t v_b = 0;
++  uint32_t v_bx_offset = 0;
++  uint32_t v_by_offset = 0;
++  uint32_t v_sibo = 0;
++  uint8_t v_ssel = 0;
++  uint8_t v_csel = 0;
++
++  v_total_hv = 0u;
++  v_i = 0u;
++  v_b = 0u;
++  v_bx_offset = 0u;
++  v_by_offset = 0u;
++  while (v_i < self->private_impl.f_scan_num_components) {
++    v_h = ((uint32_t)(self->private_impl.f_components_h[self->private_impl.f_scan_comps_cselector[v_i]]));
++    v_v = ((uint32_t)(self->private_impl.f_components_v[self->private_impl.f_scan_comps_cselector[v_i]]));
++    v_hv = (((uint32_t)(self->private_impl.f_components_h[self->private_impl.f_scan_comps_cselector[v_i]])) * ((uint32_t)(self->private_impl.f_components_v[self->private_impl.f_scan_comps_cselector[v_i]])));
++    self->private_impl.f_swizzle_immediately_c_offsets[v_i] = ((uint32_t)(64u * v_total_hv));
++    v_total_hv += v_hv;
++    while (v_hv > 0u) {
++      self->private_impl.f_scan_comps_bx_offset[(v_b & 15u)] = ((uint8_t)((v_bx_offset & 3u)));
++      self->private_impl.f_scan_comps_by_offset[(v_b & 15u)] = ((uint8_t)((v_by_offset & 3u)));
++      self->private_impl.f_mcu_blocks_sselector[(v_b & 15u)] = ((uint8_t)(v_i));
++      v_b += 1u;
++      v_bx_offset += 1u;
++      if (v_bx_offset == v_h) {
++        v_bx_offset = 0u;
++        v_by_offset += 1u;
++        if (v_by_offset == v_v) {
++          v_by_offset = 0u;
++        }
++      }
++      v_hv -= 1u;
++    }
++    v_i += 1u;
++  }
++  if (v_total_hv > 10u) {
++    return true;
++  }
++  self->private_impl.f_mcu_num_blocks = v_total_hv;
++  self->private_impl.f_swizzle_immediately_c_offsets[self->private_impl.f_scan_num_components] = ((uint32_t)(64u * v_total_hv));
++  v_b = 0u;
++  while (v_b < self->private_impl.f_mcu_num_blocks) {
++    v_ssel = self->private_impl.f_mcu_blocks_sselector[v_b];
++    v_csel = self->private_impl.f_scan_comps_cselector[v_ssel];
++    self->private_impl.f_mcu_blocks_offset[v_b] = (self->private_impl.f_components_workbuf_offsets[v_csel] + (8u * ((uint64_t)(self->private_impl.f_scan_comps_bx_offset[v_b]))) + (8u * ((uint64_t)(self->private_impl.f_scan_comps_by_offset[v_b])) * ((uint64_t)(self->private_impl.f_components_workbuf_widths[v_csel]))));
++    self->private_impl.f_mcu_blocks_mx_mul[v_b] = (8u * ((uint32_t)(self->private_impl.f_components_h[v_csel])));
++    self->private_impl.f_mcu_blocks_my_mul[v_b] = (8u * ((uint32_t)(self->private_impl.f_components_v[v_csel])) * self->private_impl.f_components_workbuf_widths[v_csel]);
++    self->private_impl.f_mcu_blocks_dc_hselector[v_b] = ((uint8_t)(0u | self->private_impl.f_scan_comps_td[v_ssel]));
++    self->private_impl.f_mcu_blocks_ac_hselector[v_b] = ((uint8_t)(4u | self->private_impl.f_scan_comps_ta[v_ssel]));
++    v_sibo = ((uint32_t)(self->private_impl.f_swizzle_immediately_c_offsets[v_csel] + ((8u * ((uint32_t)(self->private_impl.f_scan_comps_bx_offset[v_b]))) + (64u * ((uint32_t)(self->private_impl.f_scan_comps_by_offset[v_b])) * ((uint32_t)(self->private_impl.f_components_h[v_csel]))))));
++    self->private_impl.f_swizzle_immediately_b_offsets[v_b] = wuffs_base__u32__min(v_sibo, 576u);
++    v_b += 1u;
++  }
++  self->private_impl.f_scan_width_in_mcus = self->private_impl.f_width_in_mcus;
++  self->private_impl.f_scan_height_in_mcus = self->private_impl.f_height_in_mcus;
++  return false;
++}
++
++// -------- func jpeg.decoder.fill_bitstream
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_jpeg__decoder__fill_bitstream(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  uint32_t v_wi = 0;
++  uint8_t v_c8 = 0;
++  uint32_t v_new_wi = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  if (self->private_impl.f_bitstream_ri <= 0u) {
++  } else if (self->private_impl.f_bitstream_ri >= self->private_impl.f_bitstream_wi) {
++    self->private_impl.f_bitstream_ri = 0u;
++    self->private_impl.f_bitstream_wi = 0u;
++  } else {
++    v_wi = (self->private_impl.f_bitstream_wi - self->private_impl.f_bitstream_ri);
++    wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_bitstream_buffer, 2048), wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
++        self->private_impl.f_bitstream_ri,
++        self->private_impl.f_bitstream_wi));
++    self->private_impl.f_bitstream_ri = 0u;
++    self->private_impl.f_bitstream_wi = v_wi;
++  }
++  v_wi = self->private_impl.f_bitstream_wi;
++  while ((v_wi < 2048u) && (((uint64_t)(io2_a_src - iop_a_src)) > 0u)) {
++    v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++    if (v_c8 < 255u) {
++      self->private_data.f_bitstream_buffer[v_wi] = v_c8;
++      v_wi += 1u;
++      iop_a_src += 1u;
++      continue;
++    } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 1u) {
++      break;
++    } else if (((uint16_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8u)) > 0u) {
++      break;
++    } else {
++      self->private_data.f_bitstream_buffer[v_wi] = 255u;
++      v_wi += 1u;
++      iop_a_src += 2u;
++    }
++  }
++  if (((uint64_t)(io2_a_src - iop_a_src)) > 1u) {
++    if ((wuffs_base__peek_u8be__no_bounds_check(iop_a_src) >= 255u) && (((uint16_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8u)) > 0u)) {
++      v_new_wi = (wuffs_base__u32__min(v_wi, 1784u) + 264u);
++      v_new_wi = wuffs_base__u32__min(v_new_wi, (v_wi + self->private_impl.f_bitstream_padding));
++      if (v_wi < v_new_wi) {
++        wuffs_private_impl__u32__sat_sub_indirect(&self->private_impl.f_bitstream_padding, (v_new_wi - v_wi));
++        wuffs_private_impl__bulk_memset(&self->private_data.f_bitstream_buffer[v_wi], (v_new_wi - v_wi), 0u);
++        v_wi = v_new_wi;
++      }
++    }
++  }
++  self->private_impl.f_bitstream_wi = v_wi;
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return wuffs_base__make_empty_struct();
++}
++
++// -------- func jpeg.decoder.load_mcu_blocks_for_single_component
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_jpeg__decoder__load_mcu_blocks_for_single_component(
++    wuffs_jpeg__decoder* self,
++    uint32_t a_mx,
++    uint32_t a_my,
++    wuffs_base__slice_u8 a_workbuf,
++    uint32_t a_csel) {
++  return (*self->private_impl.choosy_load_mcu_blocks_for_single_component)(self, a_mx, a_my, a_workbuf, a_csel);
++}
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_jpeg__decoder__load_mcu_blocks_for_single_component__choosy_default(
++    wuffs_jpeg__decoder* self,
++    uint32_t a_mx,
++    uint32_t a_my,
++    wuffs_base__slice_u8 a_workbuf,
++    uint32_t a_csel) {
++  uint64_t v_stride16 = 0;
++  uint64_t v_offset = 0;
++
++  v_stride16 = ((uint64_t)((self->private_impl.f_components_workbuf_widths[a_csel] * 16u)));
++  v_offset = (self->private_impl.f_components_workbuf_offsets[(a_csel | 4u)] + (((uint64_t)(a_mx)) * 128u) + (((uint64_t)(a_my)) * v_stride16));
++  if (v_offset <= ((uint64_t)(a_workbuf.len))) {
++    wuffs_private_impl__bulk_load_host_endian(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset));
++  }
++  return wuffs_base__make_empty_struct();
++}
++
++// -------- func jpeg.decoder.load_mcu_blocks
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_jpeg__decoder__load_mcu_blocks(
++    wuffs_jpeg__decoder* self,
++    uint32_t a_mx,
++    uint32_t a_my,
++    wuffs_base__slice_u8 a_workbuf) {
++  uint32_t v_b = 0;
++  uint8_t v_csel = 0;
++  uint64_t v_h = 0;
++  uint64_t v_v = 0;
++  uint64_t v_stride16 = 0;
++  uint64_t v_offset = 0;
++
++  v_h = 1u;
++  v_v = 1u;
++  v_b = 0u;
++  while (v_b < self->private_impl.f_mcu_num_blocks) {
++    v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[v_b]];
++    if (self->private_impl.f_scan_num_components > 1u) {
++      v_h = ((uint64_t)(self->private_impl.f_components_h[v_csel]));
++      v_v = ((uint64_t)(self->private_impl.f_components_v[v_csel]));
++    }
++    v_stride16 = ((uint64_t)((self->private_impl.f_components_workbuf_widths[v_csel] * 16u)));
++    v_offset = (self->private_impl.f_components_workbuf_offsets[((uint8_t)(v_csel | 4u))] + (((v_h * ((uint64_t)(a_mx))) + ((uint64_t)(self->private_impl.f_scan_comps_bx_offset[v_b]))) * 128u) + (((v_v * ((uint64_t)(a_my))) + ((uint64_t)(self->private_impl.f_scan_comps_by_offset[v_b]))) * v_stride16));
++    if (v_offset <= ((uint64_t)(a_workbuf.len))) {
++      wuffs_private_impl__bulk_load_host_endian(&self->private_data.f_mcu_blocks[v_b], 1u * (size_t)128u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset));
++    }
++    v_b += 1u;
++  }
++  return wuffs_base__make_empty_struct();
++}
++
++// -------- func jpeg.decoder.save_mcu_blocks
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_jpeg__decoder__save_mcu_blocks(
++    wuffs_jpeg__decoder* self,
++    uint32_t a_mx,
++    uint32_t a_my,
++    wuffs_base__slice_u8 a_workbuf) {
++  uint32_t v_b = 0;
++  uint8_t v_csel = 0;
++  uint64_t v_h = 0;
++  uint64_t v_v = 0;
++  uint64_t v_stride16 = 0;
++  uint64_t v_offset = 0;
++
++  v_h = 1u;
++  v_v = 1u;
++  v_b = 0u;
++  while (v_b < self->private_impl.f_mcu_num_blocks) {
++    v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[v_b]];
++    if (self->private_impl.f_scan_num_components > 1u) {
++      v_h = ((uint64_t)(self->private_impl.f_components_h[v_csel]));
++      v_v = ((uint64_t)(self->private_impl.f_components_v[v_csel]));
++    }
++    v_stride16 = ((uint64_t)((self->private_impl.f_components_workbuf_widths[v_csel] * 16u)));
++    v_offset = (self->private_impl.f_components_workbuf_offsets[((uint8_t)(v_csel | 4u))] + (((v_h * ((uint64_t)(a_mx))) + ((uint64_t)(self->private_impl.f_scan_comps_bx_offset[v_b]))) * 128u) + (((v_v * ((uint64_t)(a_my))) + ((uint64_t)(self->private_impl.f_scan_comps_by_offset[v_b]))) * v_stride16));
++    if (v_offset <= ((uint64_t)(a_workbuf.len))) {
++      wuffs_private_impl__bulk_save_host_endian(&self->private_data.f_mcu_blocks[v_b], 1u * (size_t)128u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset));
++    }
++    v_b += 1u;
++  }
++  return wuffs_base__make_empty_struct();
++}
++
++// -------- func jpeg.decoder.skip_past_the_next_restart_marker
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_jpeg__decoder__skip_past_the_next_restart_marker(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_c8 = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_skip_past_the_next_restart_marker;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++        continue;
++      } else if (wuffs_base__peek_u8be__no_bounds_check(iop_a_src) < 255u) {
++        iop_a_src += 1u;
++        continue;
++      }
++      v_c8 = ((uint8_t)(((uint16_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8u))));
++      if (v_c8 < 192u) {
++        iop_a_src += 2u;
++        continue;
++      } else if ((v_c8 < 208u) || (215u < v_c8)) {
++        break;
++      }
++      v_c8 &= 7u;
++      if ((self->private_impl.f_next_restart_marker == ((uint8_t)(((uint8_t)(v_c8 + 1u)) & 7u))) || (self->private_impl.f_next_restart_marker == ((uint8_t)(((uint8_t)(v_c8 + 2u)) & 7u)))) {
++        break;
++      } else if ((self->private_impl.f_next_restart_marker == ((uint8_t)(((uint8_t)(v_c8 + 7u)) & 7u))) || (self->private_impl.f_next_restart_marker == ((uint8_t)(((uint8_t)(v_c8 + 6u)) & 7u)))) {
++        iop_a_src += 2u;
++        continue;
++      } else {
++        iop_a_src += 2u;
++        break;
++      }
++    }
++    self->private_impl.f_next_restart_marker = ((uint8_t)(((uint8_t)(self->private_impl.f_next_restart_marker + 1u)) & 7u));
++
++    ok:
++    self->private_impl.p_skip_past_the_next_restart_marker = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_skip_past_the_next_restart_marker = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func jpeg.decoder.apply_progressive_idct
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_jpeg__decoder__apply_progressive_idct(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__slice_u8 a_workbuf) {
++  uint32_t v_csel = 0;
++  bool v_block_smoothing_applicable = false;
++  uint32_t v_scan_width_in_mcus = 0;
++  uint32_t v_scan_height_in_mcus = 0;
++  uint32_t v_mcu_blocks_mx_mul_0 = 0;
++  uint32_t v_mcu_blocks_my_mul_0 = 0;
++  uint32_t v_my = 0;
++  uint32_t v_mx = 0;
++  uint64_t v_stride = 0;
++  uint64_t v_offset = 0;
++  uint8_t v_stashed_mcu_blocks_0[128] = {0};
++
++  wuffs_private_impl__bulk_save_host_endian(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, wuffs_base__make_slice_u8(v_stashed_mcu_blocks_0, 128));
++  v_block_smoothing_applicable = true;
++  v_csel = 0u;
++  while (v_csel < self->private_impl.f_num_components) {
++    if ((self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][0u] >= 16u) || wuffs_jpeg__decoder__top_left_quants_has_zero(self, ((uint32_t)(self->private_impl.f_components_tq[v_csel])))) {
++      v_block_smoothing_applicable = false;
++    }
++    v_csel += 1u;
++  }
++  v_csel = 0u;
++  while (v_csel < self->private_impl.f_num_components) {
++    v_scan_width_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_width, self->private_impl.f_components_h[v_csel], self->private_impl.f_max_incl_components_h);
++    v_scan_height_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_height, self->private_impl.f_components_v[v_csel], self->private_impl.f_max_incl_components_v);
++    v_mcu_blocks_mx_mul_0 = 8u;
++    v_mcu_blocks_my_mul_0 = (8u * self->private_impl.f_components_workbuf_widths[v_csel]);
++    if (v_block_smoothing_applicable && (0u != (self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][1u] |
++        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][2u] |
++        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][3u] |
++        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][4u] |
++        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][5u] |
++        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][6u] |
++        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][8u] |
++        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][8u] |
++        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][9u]))) {
++      self->private_impl.choosy_load_mcu_blocks_for_single_component = (
++          &wuffs_jpeg__decoder__load_mcu_blocks_for_single_component_smooth);
++      self->private_impl.f_block_smoothing_mx_max_incl = wuffs_base__u32__sat_sub(v_scan_width_in_mcus, 1u);
++      self->private_impl.f_block_smoothing_my_max_incl = wuffs_base__u32__sat_sub(v_scan_height_in_mcus, 1u);
++    } else {
++      self->private_impl.choosy_load_mcu_blocks_for_single_component = (
++          &wuffs_jpeg__decoder__load_mcu_blocks_for_single_component__choosy_default);
++    }
++    v_my = 0u;
++    while (v_my < v_scan_height_in_mcus) {
++      v_mx = 0u;
++      while (v_mx < v_scan_width_in_mcus) {
++        wuffs_jpeg__decoder__load_mcu_blocks_for_single_component(self,
++            v_mx,
++            v_my,
++            a_workbuf,
++            v_csel);
++        v_stride = ((uint64_t)(self->private_impl.f_components_workbuf_widths[v_csel]));
++        v_offset = (self->private_impl.f_components_workbuf_offsets[v_csel] + (((uint64_t)(v_mcu_blocks_mx_mul_0)) * ((uint64_t)(v_mx))) + (((uint64_t)(v_mcu_blocks_my_mul_0)) * ((uint64_t)(v_my))));
++        if (v_offset <= ((uint64_t)(a_workbuf.len))) {
++          wuffs_jpeg__decoder__decode_idct(self, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset), v_stride, ((uint32_t)(self->private_impl.f_components_tq[v_csel])));
++        }
++        v_mx += 1u;
++      }
++      v_my += 1u;
++    }
++    v_csel += 1u;
++  }
++  wuffs_private_impl__bulk_load_host_endian(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, wuffs_base__make_slice_u8(v_stashed_mcu_blocks_0, 128));
++  return wuffs_base__make_empty_struct();
++}
++
++// -------- func jpeg.decoder.swizzle_gray
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_jpeg__decoder__swizzle_gray(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__slice_u8 a_workbuf,
++    uint32_t a_x0,
++    uint32_t a_x1,
++    uint32_t a_y0,
++    uint32_t a_y1,
++    uint64_t a_stride) {
++  wuffs_base__pixel_format v_dst_pixfmt = {0};
++  uint32_t v_dst_bits_per_pixel = 0;
++  uint32_t v_dst_bytes_per_pixel = 0;
++  uint64_t v_x0 = 0;
++  uint64_t v_x1 = 0;
++  wuffs_base__table_u8 v_tab = {0};
++  wuffs_base__slice_u8 v_dst = {0};
++  uint32_t v_y = 0;
++  uint32_t v_y1 = 0;
++
++  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
++  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
++  if ((v_dst_bits_per_pixel & 7u) != 0u) {
++    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++  }
++  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
++  v_x0 = ((uint64_t)((v_dst_bytes_per_pixel * wuffs_base__u32__min(a_x0, self->private_impl.f_width))));
++  v_x1 = ((uint64_t)((v_dst_bytes_per_pixel * wuffs_base__u32__min(a_x1, self->private_impl.f_width))));
++  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
++  v_y = a_y0;
++  v_y1 = wuffs_base__u32__min(a_y1, self->private_impl.f_height);
++  while (v_y < v_y1) {
++    v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, v_y);
++    if (v_x1 < ((uint64_t)(v_dst.len))) {
++      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_x1);
++    }
++    if (v_x0 < ((uint64_t)(v_dst.len))) {
++      v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_x0);
++    } else {
++      v_dst = wuffs_base__utility__empty_slice_u8();
++    }
++    wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)), a_workbuf);
++    if (a_stride <= ((uint64_t)(a_workbuf.len))) {
++      a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, a_stride);
++    } else {
++      a_workbuf = wuffs_base__utility__empty_slice_u8();
++    }
++    v_y += 1u;
++  }
++  return wuffs_base__make_status(NULL);
++}
++
++// -------- func jpeg.decoder.swizzle_colorful
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_jpeg__decoder__swizzle_colorful(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__slice_u8 a_workbuf,
++    uint32_t a_x0,
++    uint32_t a_x1,
++    uint32_t a_y0,
++    uint32_t a_y1) {
++  uint64_t v_i = 0;
++  uint64_t v_j = 0;
++  wuffs_base__slice_u8 v_src0 = {0};
++  wuffs_base__slice_u8 v_src1 = {0};
++  wuffs_base__slice_u8 v_src2 = {0};
++  wuffs_base__slice_u8 v_src3 = {0};
++  uint32_t v_width0 = 0;
++  uint32_t v_width1 = 0;
++  uint32_t v_width2 = 0;
++  uint32_t v_width3 = 0;
++  uint32_t v_height0 = 0;
++  uint32_t v_height1 = 0;
++  uint32_t v_height2 = 0;
++  uint32_t v_height3 = 0;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  if (self->private_impl.f_swizzle_immediately) {
++    v_i = ((uint64_t)(self->private_impl.f_swizzle_immediately_c_offsets[0u]));
++    v_j = ((uint64_t)(self->private_impl.f_swizzle_immediately_c_offsets[1u]));
++    if ((v_i <= v_j) && (v_j <= 640u)) {
++      v_src0 = wuffs_base__make_slice_u8_ij(self->private_data.f_swizzle_immediately_buffer, v_i, v_j);
++      v_width0 = (8u * ((uint32_t)(self->private_impl.f_components_h[0u])));
++      v_height0 = (8u * ((uint32_t)(self->private_impl.f_components_v[0u])));
++    }
++    v_i = ((uint64_t)(self->private_impl.f_swizzle_immediately_c_offsets[1u]));
++    v_j = ((uint64_t)(self->private_impl.f_swizzle_immediately_c_offsets[2u]));
++    if ((v_i <= v_j) && (v_j <= 640u)) {
++      v_src1 = wuffs_base__make_slice_u8_ij(self->private_data.f_swizzle_immediately_buffer, v_i, v_j);
++      v_width1 = (8u * ((uint32_t)(self->private_impl.f_components_h[1u])));
++      v_height1 = (8u * ((uint32_t)(self->private_impl.f_components_v[1u])));
++    }
++    v_i = ((uint64_t)(self->private_impl.f_swizzle_immediately_c_offsets[2u]));
++    v_j = ((uint64_t)(self->private_impl.f_swizzle_immediately_c_offsets[3u]));
++    if ((v_i <= v_j) && (v_j <= 640u)) {
++      v_src2 = wuffs_base__make_slice_u8_ij(self->private_data.f_swizzle_immediately_buffer, v_i, v_j);
++      v_width2 = (8u * ((uint32_t)(self->private_impl.f_components_h[2u])));
++      v_height2 = (8u * ((uint32_t)(self->private_impl.f_components_v[2u])));
++    }
++    v_i = ((uint64_t)(self->private_impl.f_swizzle_immediately_c_offsets[3u]));
++    v_j = ((uint64_t)(self->private_impl.f_swizzle_immediately_c_offsets[4u]));
++    if ((v_i <= v_j) && (v_j <= 640u)) {
++      v_src3 = wuffs_base__make_slice_u8_ij(self->private_data.f_swizzle_immediately_buffer, v_i, v_j);
++      v_width3 = (8u * ((uint32_t)(self->private_impl.f_components_h[3u])));
++      v_height3 = (8u * ((uint32_t)(self->private_impl.f_components_v[3u])));
++    }
++  } else {
++    if ((self->private_impl.f_components_workbuf_offsets[0u] <= self->private_impl.f_components_workbuf_offsets[1u]) && (self->private_impl.f_components_workbuf_offsets[1u] <= ((uint64_t)(a_workbuf.len)))) {
++      v_src0 = wuffs_base__slice_u8__subslice_ij(a_workbuf,
++          self->private_impl.f_components_workbuf_offsets[0u],
++          self->private_impl.f_components_workbuf_offsets[1u]);
++      v_width0 = self->private_impl.f_components_workbuf_widths[0u];
++      v_height0 = self->private_impl.f_components_workbuf_heights[0u];
++    }
++    if ((self->private_impl.f_components_workbuf_offsets[1u] <= self->private_impl.f_components_workbuf_offsets[2u]) && (self->private_impl.f_components_workbuf_offsets[2u] <= ((uint64_t)(a_workbuf.len)))) {
++      v_src1 = wuffs_base__slice_u8__subslice_ij(a_workbuf,
++          self->private_impl.f_components_workbuf_offsets[1u],
++          self->private_impl.f_components_workbuf_offsets[2u]);
++      v_width1 = self->private_impl.f_components_workbuf_widths[1u];
++      v_height1 = self->private_impl.f_components_workbuf_heights[1u];
++    }
++    if ((self->private_impl.f_components_workbuf_offsets[2u] <= self->private_impl.f_components_workbuf_offsets[3u]) && (self->private_impl.f_components_workbuf_offsets[3u] <= ((uint64_t)(a_workbuf.len)))) {
++      v_src2 = wuffs_base__slice_u8__subslice_ij(a_workbuf,
++          self->private_impl.f_components_workbuf_offsets[2u],
++          self->private_impl.f_components_workbuf_offsets[3u]);
++      v_width2 = self->private_impl.f_components_workbuf_widths[2u];
++      v_height2 = self->private_impl.f_components_workbuf_heights[2u];
++    }
++    if ((self->private_impl.f_components_workbuf_offsets[3u] <= self->private_impl.f_components_workbuf_offsets[4u]) && (self->private_impl.f_components_workbuf_offsets[4u] <= ((uint64_t)(a_workbuf.len)))) {
++      v_src3 = wuffs_base__slice_u8__subslice_ij(a_workbuf,
++          self->private_impl.f_components_workbuf_offsets[3u],
++          self->private_impl.f_components_workbuf_offsets[4u]);
++      v_width3 = self->private_impl.f_components_workbuf_widths[3u];
++      v_height3 = self->private_impl.f_components_workbuf_heights[3u];
++    }
++  }
++  v_status = wuffs_base__pixel_swizzler__swizzle_ycck(&self->private_impl.f_swizzler,
++      a_dst,
++      wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
++      (a_x0 & 65535u),
++      wuffs_base__u32__min(a_x1, self->private_impl.f_width),
++      (a_y0 & 65535u),
++      wuffs_base__u32__min(a_y1, self->private_impl.f_height),
++      v_src0,
++      v_src1,
++      v_src2,
++      v_src3,
++      v_width0,
++      v_width1,
++      v_width2,
++      v_width3,
++      v_height0,
++      v_height1,
++      v_height2,
++      v_height3,
++      v_width0,
++      v_width1,
++      v_width2,
++      v_width3,
++      self->private_impl.f_components_h[0u],
++      self->private_impl.f_components_h[1u],
++      self->private_impl.f_components_h[2u],
++      self->private_impl.f_components_h[3u],
++      self->private_impl.f_components_v[0u],
++      self->private_impl.f_components_v[1u],
++      self->private_impl.f_components_v[2u],
++      self->private_impl.f_components_v[3u],
++      self->private_impl.f_is_rgb_or_cmyk,
++      ! self->private_impl.f_use_lower_quality,
++      wuffs_base__make_slice_u8(self->private_data.f_swizzle_ycck_scratch_buffer_2k, 2048));
++  return wuffs_private_impl__status__ensure_not_a_suspension(v_status);
++}
++
++// -------- func jpeg.decoder.frame_dirty_rect
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
++wuffs_jpeg__decoder__frame_dirty_rect(
++    const wuffs_jpeg__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_rect_ie_u32();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_rect_ie_u32();
++  }
++
++  return wuffs_base__utility__make_rect_ie_u32(
++      0u,
++      0u,
++      self->private_impl.f_width,
++      self->private_impl.f_height);
++}
++
++// -------- func jpeg.decoder.num_animation_loops
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_jpeg__decoder__num_animation_loops(
++    const wuffs_jpeg__decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  return 0u;
++}
++
++// -------- func jpeg.decoder.num_decoded_frame_configs
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_jpeg__decoder__num_decoded_frame_configs(
++    const wuffs_jpeg__decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  if (self->private_impl.f_call_sequence > 32u) {
++    return 1u;
++  }
++  return 0u;
++}
++
++// -------- func jpeg.decoder.num_decoded_frames
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_jpeg__decoder__num_decoded_frames(
++    const wuffs_jpeg__decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  if (self->private_impl.f_call_sequence > 64u) {
++    return 1u;
++  }
++  return 0u;
++}
++
++// -------- func jpeg.decoder.restart_frame
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_jpeg__decoder__restart_frame(
++    wuffs_jpeg__decoder* self,
++    uint64_t a_index,
++    uint64_t a_io_position) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++
++  uint32_t v_i = 0;
++  uint32_t v_j = 0;
++
++  if (self->private_impl.f_call_sequence < 32u) {
++    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++  }
++  if (a_index != 0u) {
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  self->private_impl.f_call_sequence = 40u;
++  self->private_impl.f_bitstream_is_closed = false;
++  self->private_impl.f_expect_multiple_scans = false;
++  self->private_impl.f_frame_config_io_position = a_io_position;
++  self->private_impl.f_scan_count = 0u;
++  self->private_impl.f_restart_interval = self->private_impl.f_saved_restart_interval;
++  v_i = 0u;
++  while (v_i < 4u) {
++    self->private_impl.f_seen_dqt[v_i] = self->private_impl.f_saved_seen_dqt[v_i];
++    v_j = 0u;
++    while (v_j < 64u) {
++      self->private_impl.f_quant_tables[v_i][v_j] = self->private_impl.f_saved_quant_tables[v_i][v_j];
++      v_j += 1u;
++    }
++    v_i += 1u;
++  }
++  v_i = 0u;
++  while (v_i < 4u) {
++    v_j = 0u;
++    while (v_j < 10u) {
++      self->private_impl.f_block_smoothing_lowest_scan_al[v_i][v_j] = 16u;
++      v_j += 1u;
++    }
++    v_i += 1u;
++  }
++  v_i = 0u;
++  while (v_i < 8u) {
++    self->private_impl.f_seen_dht[v_i] = false;
++    v_i += 1u;
++  }
++  return wuffs_base__make_status(NULL);
++}
++
++// -------- func jpeg.decoder.set_report_metadata
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_jpeg__decoder__set_report_metadata(
++    wuffs_jpeg__decoder* self,
++    uint32_t a_fourcc,
++    bool a_report) {
++  return wuffs_base__make_empty_struct();
++}
++
++// -------- func jpeg.decoder.tell_me_more
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_jpeg__decoder__tell_me_more(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__more_information* a_minfo,
++    wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_dst || !a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 4)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  status = wuffs_base__make_status(wuffs_base__error__no_more_information);
++  goto exit;
++
++  goto ok;
++  ok:
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func jpeg.decoder.workbuf_len
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_jpeg__decoder__workbuf_len(
++    const wuffs_jpeg__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++
++  if (self->private_impl.f_use_lower_quality && (self->private_impl.f_sof_marker < 194u)) {
++    return wuffs_base__utility__make_range_ii_u64(0u, self->private_impl.f_components_workbuf_offsets[8u]);
++  }
++  return wuffs_base__utility__make_range_ii_u64(self->private_impl.f_components_workbuf_offsets[8u], self->private_impl.f_components_workbuf_offsets[8u]);
++}
++
++// -------- func jpeg.decoder.top_left_quants_has_zero
++
++WUFFS_BASE__GENERATED_C_CODE
++static bool
++wuffs_jpeg__decoder__top_left_quants_has_zero(
++    const wuffs_jpeg__decoder* self,
++    uint32_t a_q) {
++  return ((self->private_impl.f_quant_tables[a_q][0u] == 0u) ||
++      (self->private_impl.f_quant_tables[a_q][1u] == 0u) ||
++      (self->private_impl.f_quant_tables[a_q][2u] == 0u) ||
++      (self->private_impl.f_quant_tables[a_q][3u] == 0u) ||
++      (self->private_impl.f_quant_tables[a_q][8u] == 0u) ||
++      (self->private_impl.f_quant_tables[a_q][9u] == 0u) ||
++      (self->private_impl.f_quant_tables[a_q][10u] == 0u) ||
++      (self->private_impl.f_quant_tables[a_q][16u] == 0u) ||
++      (self->private_impl.f_quant_tables[a_q][17u] == 0u) ||
++      (self->private_impl.f_quant_tables[a_q][24u] == 0u));
++}
++
++// -------- func jpeg.decoder.load_mcu_blocks_for_single_component_smooth
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_jpeg__decoder__load_mcu_blocks_for_single_component_smooth(
++    wuffs_jpeg__decoder* self,
++    uint32_t a_mx,
++    uint32_t a_my,
++    wuffs_base__slice_u8 a_workbuf,
++    uint32_t a_csel) {
++  uint64_t v_stride16 = 0;
++  uint64_t v_offset = 0;
++  uint32_t v_dx = 0;
++  uint32_t v_dy = 0;
++  uint32_t v_mx = 0;
++  uint32_t v_my = 0;
++  uint8_t v_q = 0;
++  uint32_t v_q_00 = 0;
++  uint32_t v_q_xy = 0;
++  uint8_t v_al = 0;
++  uint32_t v_scratch = 0;
++  uint32_t v_limit = 0;
++
++  v_stride16 = ((uint64_t)((self->private_impl.f_components_workbuf_widths[a_csel] * 16u)));
++  v_offset = (self->private_impl.f_components_workbuf_offsets[(a_csel | 4u)] + (((uint64_t)(a_mx)) * 128u) + (((uint64_t)(a_my)) * v_stride16));
++  if (v_offset <= ((uint64_t)(a_workbuf.len))) {
++    wuffs_private_impl__bulk_load_host_endian(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset));
++  }
++  v_dy = 0u;
++  while (v_dy < 5u) {
++    v_my = wuffs_base__u32__min(self->private_impl.f_block_smoothing_my_max_incl, wuffs_base__u32__sat_sub((a_my + v_dy), 2u));
++    v_dx = 0u;
++    while (v_dx < 5u) {
++      v_mx = wuffs_base__u32__min(self->private_impl.f_block_smoothing_mx_max_incl, wuffs_base__u32__sat_sub((a_mx + v_dx), 2u));
++      v_offset = (self->private_impl.f_components_workbuf_offsets[(a_csel | 4u)] + (((uint64_t)(v_mx)) * 128u) + (((uint64_t)(v_my)) * v_stride16));
++      if (v_offset <= ((uint64_t)(a_workbuf.len))) {
++        wuffs_private_impl__bulk_load_host_endian(&self->private_impl.f_block_smoothing_dc_values[v_dy][v_dx], 1u * (size_t)2u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset));
++      }
++      v_dx += 1u;
++    }
++    v_dy += 1u;
++  }
++  v_q = self->private_impl.f_components_tq[a_csel];
++  v_q_00 = ((uint32_t)(self->private_impl.f_quant_tables[v_q][0u]));
++  if (v_q_00 <= 0u) {
++    return wuffs_base__make_empty_struct();
++  }
++  if (0u != (16u &
++      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][1u] &
++      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][2u] &
++      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][3u] &
++      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][4u] &
++      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][5u] &
++      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][6u] &
++      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][7u] &
++      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][8u] &
++      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][9u])) {
++    v_scratch = 0u;
++    v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
++    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
++    v_scratch += ((uint32_t)(4294967288u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
++    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
++    v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
++    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
++    v_scratch += ((uint32_t)(6u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
++    v_scratch += ((uint32_t)(42u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
++    v_scratch += ((uint32_t)(6u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
++    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
++    v_scratch += ((uint32_t)(4294967288u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
++    v_scratch += ((uint32_t)(42u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
++    v_scratch += ((uint32_t)(152u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
++    v_scratch += ((uint32_t)(42u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
++    v_scratch += ((uint32_t)(4294967288u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
++    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
++    v_scratch += ((uint32_t)(6u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
++    v_scratch += ((uint32_t)(42u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
++    v_scratch += ((uint32_t)(6u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
++    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
++    v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
++    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
++    v_scratch += ((uint32_t)(4294967288u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
++    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
++    v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
++    if (v_scratch < 2147483648u) {
++      v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + 128u)) / 256u)));
++    } else {
++      v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + 128u)) / 256u)));
++    }
++    self->private_data.f_mcu_blocks[0u][0u] = ((uint16_t)(v_scratch));
++    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][1u]));
++    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][1u] == 0u)) {
++      v_scratch = 0u;
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
++      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
++      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
++      v_scratch += ((uint32_t)(4294967283u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
++      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
++      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
++      v_scratch += ((uint32_t)(38u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
++      v_scratch += ((uint32_t)(4294967258u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
++      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
++      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
++      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
++      v_scratch += ((uint32_t)(4294967283u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
++      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
++      v_scratch *= v_q_00;
++      if (v_scratch < 2147483648u) {
++        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
++      } else {
++        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
++      }
++      self->private_data.f_mcu_blocks[0u][1u] = ((uint16_t)(v_scratch));
++    }
++    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][2u]));
++    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][2u] == 0u)) {
++      v_scratch = 0u;
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
++      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
++      v_scratch += ((uint32_t)(4294967291u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
++      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
++      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
++      v_scratch += ((uint32_t)(4294967282u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
++      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
++      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
++      v_scratch += ((uint32_t)(4294967291u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
++      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
++      v_scratch *= v_q_00;
++      if (v_scratch < 2147483648u) {
++        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
++      } else {
++        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
++      }
++      self->private_data.f_mcu_blocks[0u][2u] = ((uint16_t)(v_scratch));
++    }
++    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][3u]));
++    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][3u] == 0u)) {
++      v_scratch = 0u;
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
++      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
++      v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
++      v_scratch *= v_q_00;
++      if (v_scratch < 2147483648u) {
++        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
++      } else {
++        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
++      }
++      self->private_data.f_mcu_blocks[0u][3u] = ((uint16_t)(v_scratch));
++    }
++    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][8u]));
++    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][8u] == 0u)) {
++      v_scratch = 0u;
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
++      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
++      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
++      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
++      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
++      v_scratch += ((uint32_t)(38u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
++      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
++      v_scratch += ((uint32_t)(4294967283u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
++      v_scratch += ((uint32_t)(4294967258u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
++      v_scratch += ((uint32_t)(4294967283u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
++      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
++      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
++      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
++      v_scratch *= v_q_00;
++      if (v_scratch < 2147483648u) {
++        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
++      } else {
++        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
++      }
++      self->private_data.f_mcu_blocks[0u][8u] = ((uint16_t)(v_scratch));
++    }
++    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][9u]));
++    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][9u] == 0u)) {
++      v_scratch = 0u;
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
++      v_scratch += ((uint32_t)(9u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
++      v_scratch += ((uint32_t)(4294967287u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
++      v_scratch += ((uint32_t)(4294967287u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
++      v_scratch += ((uint32_t)(9u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
++      v_scratch *= v_q_00;
++      if (v_scratch < 2147483648u) {
++        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
++      } else {
++        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
++      }
++      self->private_data.f_mcu_blocks[0u][9u] = ((uint16_t)(v_scratch));
++    }
++    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][10u]));
++    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][10u] == 0u)) {
++      v_scratch = 0u;
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
++      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
++      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
++      v_scratch *= v_q_00;
++      if (v_scratch < 2147483648u) {
++        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
++      } else {
++        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
++      }
++      self->private_data.f_mcu_blocks[0u][10u] = ((uint16_t)(v_scratch));
++    }
++    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][16u]));
++    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][16u] == 0u)) {
++      v_scratch = 0u;
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
++      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
++      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
++      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
++      v_scratch += ((uint32_t)(4294967291u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
++      v_scratch += ((uint32_t)(4294967282u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
++      v_scratch += ((uint32_t)(4294967291u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
++      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
++      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
++      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
++      v_scratch *= v_q_00;
++      if (v_scratch < 2147483648u) {
++        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
++      } else {
++        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
++      }
++      self->private_data.f_mcu_blocks[0u][16u] = ((uint16_t)(v_scratch));
++    }
++    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][17u]));
++    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][17u] == 0u)) {
++      v_scratch = 0u;
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
++      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
++      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
++      v_scratch *= v_q_00;
++      if (v_scratch < 2147483648u) {
++        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
++      } else {
++        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
++      }
++      self->private_data.f_mcu_blocks[0u][17u] = ((uint16_t)(v_scratch));
++    }
++    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][24u]));
++    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][24u] == 0u)) {
++      v_scratch = 0u;
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
++      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
++      v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
++      v_scratch *= v_q_00;
++      if (v_scratch < 2147483648u) {
++        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
++      } else {
++        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
++      }
++      self->private_data.f_mcu_blocks[0u][24u] = ((uint16_t)(v_scratch));
++    }
++  } else {
++    v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][1u];
++    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][1u]));
++    if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][1u] == 0u)) {
++      v_limit = ((((uint32_t)(1u)) << v_al) - 1u);
++      v_scratch = 0u;
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
++      v_scratch += ((uint32_t)(4294967289u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
++      v_scratch += ((uint32_t)(50u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
++      v_scratch += ((uint32_t)(4294967246u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
++      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
++      v_scratch *= v_q_00;
++      if (v_scratch < 2147483648u) {
++        v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
++      } else {
++        v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
++      }
++      self->private_data.f_mcu_blocks[0u][1u] = ((uint16_t)(v_scratch));
++    }
++    v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][5u];
++    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][2u]));
++    if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][2u] == 0u)) {
++      v_limit = ((((uint32_t)(1u)) << v_al) - 1u);
++      v_scratch = 0u;
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
++      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
++      v_scratch += ((uint32_t)(4294967272u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
++      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
++      v_scratch *= v_q_00;
++      if (v_scratch < 2147483648u) {
++        v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
++      } else {
++        v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
++      }
++      self->private_data.f_mcu_blocks[0u][2u] = ((uint16_t)(v_scratch));
++    }
++    v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][2u];
++    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][8u]));
++    if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][8u] == 0u)) {
++      v_limit = ((((uint32_t)(1u)) << v_al) - 1u);
++      v_scratch = 0u;
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
++      v_scratch += ((uint32_t)(4294967289u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
++      v_scratch += ((uint32_t)(50u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
++      v_scratch += ((uint32_t)(4294967246u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
++      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
++      v_scratch *= v_q_00;
++      if (v_scratch < 2147483648u) {
++        v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
++      } else {
++        v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
++      }
++      self->private_data.f_mcu_blocks[0u][8u] = ((uint16_t)(v_scratch));
++    }
++    v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][4u];
++    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][9u]));
++    if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][9u] == 0u)) {
++      v_limit = ((((uint32_t)(1u)) << v_al) - 1u);
++      v_scratch = 0u;
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
++      v_scratch += ((uint32_t)(10u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
++      v_scratch += ((uint32_t)(4294967286u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
++      v_scratch += ((uint32_t)(4294967286u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
++      v_scratch += ((uint32_t)(10u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
++      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
++      v_scratch *= v_q_00;
++      if (v_scratch < 2147483648u) {
++        v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
++      } else {
++        v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
++      }
++      self->private_data.f_mcu_blocks[0u][9u] = ((uint16_t)(v_scratch));
++    }
++    v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][3u];
++    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][16u]));
++    if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][16u] == 0u)) {
++      v_limit = ((((uint32_t)(1u)) << v_al) - 1u);
++      v_scratch = 0u;
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
++      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
++      v_scratch += ((uint32_t)(4294967272u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
++      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
++      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
++      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
++      v_scratch *= v_q_00;
++      if (v_scratch < 2147483648u) {
++        v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
++      } else {
++        v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
++      }
++      self->private_data.f_mcu_blocks[0u][16u] = ((uint16_t)(v_scratch));
++    }
++  }
++  return wuffs_base__make_empty_struct();
++}
++
++// -------- func jpeg.decoder.decode_mcu
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint32_t
++wuffs_jpeg__decoder__decode_mcu(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__slice_u8 a_workbuf,
++    uint32_t a_mx,
++    uint32_t a_my) {
++  return (*self->private_impl.choosy_decode_mcu)(self, a_dst, a_workbuf, a_mx, a_my);
++}
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint32_t
++wuffs_jpeg__decoder__decode_mcu__choosy_default(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__slice_u8 a_workbuf,
++    uint32_t a_mx,
++    uint32_t a_my) {
++  uint32_t v_ret = 0;
++  uint64_t v_bits = 0;
++  uint32_t v_n_bits = 0;
++  uint8_t v_csel = 0;
++  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
++  wuffs_base__io_buffer* v_r = &u_r;
++  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint32_t v_pos = 0;
++  uint8_t v_dc_h = 0;
++  uint32_t v_dc_symbol = 0;
++  uint32_t v_dc_ht_fast = 0;
++  uint32_t v_dc_bl = 0;
++  uint32_t v_dc_code = 0;
++  uint32_t v_dc_blm1 = 0;
++  uint32_t v_dc_ht_slow = 0;
++  uint16_t v_dc_value = 0;
++  uint16_t v_dc_extend = 0;
++  const uint16_t* v_ac_huff_table_fast = NULL;
++  uint8_t v_ac_h = 0;
++  uint32_t v_ac_symbol = 0;
++  uint32_t v_ac_ht_fast = 0;
++  uint32_t v_ac_bl = 0;
++  uint32_t v_ac_code = 0;
++  uint32_t v_ac_blm1 = 0;
++  uint32_t v_ac_ht_slow = 0;
++  uint16_t v_ac_value = 0;
++  uint16_t v_ac_extend = 0;
++  uint32_t v_ac_rrrr = 0;
++  uint32_t v_ac_ssss = 0;
++  uint32_t v_z = 0;
++  uint32_t v_mcb = 0;
++  uint64_t v_stride = 0;
++  uint64_t v_offset = 0;
++
++  v_bits = self->private_impl.f_bitstream_bits;
++  v_n_bits = self->private_impl.f_bitstream_n_bits;
++  if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) {
++    return 2u;
++  }
++  {
++    wuffs_base__io_buffer* o_0_v_r = v_r;
++    const uint8_t* o_0_iop_v_r = iop_v_r;
++    const uint8_t* o_0_io0_v_r = io0_v_r;
++    const uint8_t* o_0_io1_v_r = io1_v_r;
++    const uint8_t* o_0_io2_v_r = io2_v_r;
++    v_r = wuffs_private_impl__io_reader__set(
++        &u_r,
++        &iop_v_r,
++        &io0_v_r,
++        &io1_v_r,
++        &io2_v_r,
++        wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
++        self->private_impl.f_bitstream_ri,
++        self->private_impl.f_bitstream_wi),
++        ((uint64_t)(self->private_impl.f_bitstream_ri)));
++    do {
++      while (self->private_impl.f_mcu_current_block < self->private_impl.f_mcu_num_blocks) {
++        while (self->private_impl.f_mcu_zig_index <= 0u) {
++          wuffs_private_impl__bulk_memset(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, 0u);
++          if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
++            v_ret = 1u;
++            goto label__goto_done__break;
++          }
++          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
++          iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
++          v_n_bits |= 56u;
++          v_dc_h = self->private_impl.f_mcu_blocks_dc_hselector[self->private_impl.f_mcu_current_block];
++          v_dc_ht_fast = ((uint32_t)(self->private_impl.f_huff_tables_fast[v_dc_h][(v_bits >> 56u)]));
++          v_dc_bl = (v_dc_ht_fast >> 8u);
++          if (v_n_bits >= v_dc_bl) {
++            v_dc_symbol = (15u & v_dc_ht_fast);
++            v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
++            v_bits <<= (v_dc_bl & 63u);
++            v_n_bits -= v_dc_bl;
++          } else {
++            v_dc_code = ((uint32_t)((v_bits >> 55u)));
++            v_dc_blm1 = 8u;
++            v_bits <<= 9u;
++            v_n_bits -= 9u;
++            while (true) {
++              v_dc_ht_slow = self->private_impl.f_huff_tables_slow[v_dc_h][v_dc_blm1];
++              if (v_dc_code < (v_dc_ht_slow >> 8u)) {
++                v_dc_symbol = (15u & ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_dc_h][(255u & ((uint32_t)(v_dc_code + v_dc_ht_slow)))])));
++                v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
++                break;
++              }
++              v_dc_code = (((uint32_t)(v_dc_code << 1u)) | ((uint32_t)((v_bits >> 63u))));
++              v_bits <<= 1u;
++              v_n_bits -= 1u;
++              v_dc_blm1 = ((v_dc_blm1 + 1u) & 15u);
++              if (v_dc_blm1 == 0u) {
++                v_dc_symbol = 0u;
++                v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
++                break;
++              }
++            }
++          }
++          v_dc_value = ((uint16_t)(((v_bits >> 32u) >> (32u - v_dc_symbol))));
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++          v_dc_value += ((uint16_t)(v_dc_extend & ((uint16_t)(((uint16_t)(wuffs_base__utility__sign_extend_rshift_u64(v_bits, 63u))) ^ 65535u))));
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++          v_bits <<= v_dc_symbol;
++          v_n_bits -= v_dc_symbol;
++          v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[self->private_impl.f_mcu_current_block]];
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++          self->private_impl.f_mcu_previous_dc_values[v_csel] += v_dc_value;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++          self->private_data.f_mcu_blocks[0u][0u] = self->private_impl.f_mcu_previous_dc_values[v_csel];
++          self->private_impl.f_mcu_zig_index = 1u;
++          break;
++        }
++        if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
++          v_ret = 1u;
++          goto label__goto_done__break;
++        }
++        if (v_n_bits < 16u) {
++          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
++        }
++        v_z = 1u;
++        self->private_impl.f_mcu_zig_index = 0u;
++        v_ac_h = self->private_impl.f_mcu_blocks_ac_hselector[self->private_impl.f_mcu_current_block];
++        v_ac_huff_table_fast = &self->private_impl.f_huff_tables_fast[v_ac_h][0u];
++        while (v_z < 64u) {
++          v_ac_ht_fast = ((uint32_t)(v_ac_huff_table_fast[(v_bits >> 56u)]));
++          if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
++            v_ret = 2u;
++            goto label__goto_done__break;
++          }
++          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
++          iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
++          v_n_bits |= 56u;
++          v_ac_bl = (v_ac_ht_fast >> 8u);
++          if (v_n_bits >= v_ac_bl) {
++            v_ac_symbol = (255u & v_ac_ht_fast);
++            v_bits <<= (v_ac_bl & 63u);
++            v_n_bits -= v_ac_bl;
++          } else {
++            v_ac_code = ((uint32_t)((v_bits >> 55u)));
++            v_ac_blm1 = 8u;
++            v_bits <<= 9u;
++            v_n_bits -= 9u;
++            while (true) {
++              v_ac_ht_slow = self->private_impl.f_huff_tables_slow[v_ac_h][v_ac_blm1];
++              if (v_ac_code < (v_ac_ht_slow >> 8u)) {
++                v_ac_symbol = ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_ac_h][(255u & ((uint32_t)(v_ac_code + v_ac_ht_slow)))]));
++                break;
++              }
++              v_ac_code = (((uint32_t)(v_ac_code << 1u)) | ((uint32_t)((v_bits >> 63u))));
++              v_bits <<= 1u;
++              v_n_bits -= 1u;
++              v_ac_blm1 = ((v_ac_blm1 + 1u) & 15u);
++              if (v_ac_blm1 == 0u) {
++                v_ac_symbol = 0u;
++                break;
++              }
++            }
++          }
++          v_ac_rrrr = (v_ac_symbol >> 4u);
++          v_z += (v_ac_rrrr + 1u);
++          v_ac_ssss = (v_ac_symbol & 15u);
++          v_ac_extend = WUFFS_JPEG__EXTEND[v_ac_ssss];
++          if (v_ac_ssss > 0u) {
++            v_ac_value = ((uint16_t)((v_bits >> (64u - v_ac_ssss))));
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++            v_ac_value += ((uint16_t)(v_ac_extend & ((uint16_t)(((uint16_t)(wuffs_base__utility__sign_extend_rshift_u64(v_bits, 63u))) ^ 65535u))));
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++            v_bits <<= v_ac_ssss;
++            v_n_bits -= v_ac_ssss;
++            self->private_data.f_mcu_blocks[0u][WUFFS_JPEG__UNZIG[v_z]] = v_ac_value;
++          } else if (v_ac_rrrr < 15u) {
++            break;
++          }
++        }
++        v_mcb = self->private_impl.f_mcu_current_block;
++        self->private_impl.f_mcu_current_block += 1u;
++        if (self->private_impl.f_test_only_interrupt_decode_mcu) {
++          goto label__goto_done__break;
++        }
++        if ( ! self->private_impl.f_swizzle_immediately) {
++          v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[v_mcb]];
++          v_stride = ((uint64_t)(self->private_impl.f_components_workbuf_widths[v_csel]));
++          v_offset = (self->private_impl.f_mcu_blocks_offset[v_mcb] + (((uint64_t)(self->private_impl.f_mcu_blocks_mx_mul[v_mcb])) * ((uint64_t)(a_mx))) + (((uint64_t)(self->private_impl.f_mcu_blocks_my_mul[v_mcb])) * ((uint64_t)(a_my))));
++          if (v_offset <= ((uint64_t)(a_workbuf.len))) {
++            wuffs_jpeg__decoder__decode_idct(self, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset), v_stride, ((uint32_t)(self->private_impl.f_components_tq[v_csel])));
++          }
++        } else if (self->private_impl.f_num_components == 1u) {
++          wuffs_jpeg__decoder__decode_idct(self, wuffs_base__make_slice_u8(self->private_data.f_swizzle_immediately_buffer, 64), 8u, ((uint32_t)(self->private_impl.f_components_tq[v_csel])));
++          self->private_impl.f_swizzle_immediately_status = wuffs_jpeg__decoder__swizzle_gray(self,
++              a_dst,
++              wuffs_base__make_slice_u8(self->private_data.f_swizzle_immediately_buffer, 64),
++              ((a_mx + 0u) * 8u),
++              ((a_mx + 1u) * 8u),
++              ((a_my + 0u) * 8u),
++              ((a_my + 1u) * 8u),
++              8u);
++          if ( ! wuffs_base__status__is_ok(&self->private_impl.f_swizzle_immediately_status)) {
++            v_ret = 3u;
++            goto label__goto_done__break;
++          }
++          break;
++        } else {
++          v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[v_mcb]];
++          v_stride = (8u * ((uint64_t)(self->private_impl.f_components_h[v_csel])));
++          wuffs_jpeg__decoder__decode_idct(self, wuffs_base__make_slice_u8_ij(self->private_data.f_swizzle_immediately_buffer, self->private_impl.f_swizzle_immediately_b_offsets[v_mcb], 640), v_stride, ((uint32_t)(self->private_impl.f_components_tq[v_csel])));
++          if (self->private_impl.f_mcu_current_block < self->private_impl.f_mcu_num_blocks) {
++            continue;
++          }
++          self->private_impl.f_swizzle_immediately_status = wuffs_jpeg__decoder__swizzle_colorful(self,
++              a_dst,
++              wuffs_base__utility__empty_slice_u8(),
++              ((a_mx + 0u) * 8u * ((uint32_t)(self->private_impl.f_max_incl_components_h))),
++              ((a_mx + 1u) * 8u * ((uint32_t)(self->private_impl.f_max_incl_components_h))),
++              ((a_my + 0u) * 8u * ((uint32_t)(self->private_impl.f_max_incl_components_v))),
++              ((a_my + 1u) * 8u * ((uint32_t)(self->private_impl.f_max_incl_components_v))));
++          if ( ! wuffs_base__status__is_ok(&self->private_impl.f_swizzle_immediately_status)) {
++            v_ret = 3u;
++            goto label__goto_done__break;
++          }
++          break;
++        }
++      }
++      self->private_impl.f_mcu_current_block = 0u;
++    } while (0);
++    label__goto_done__break:;
++    v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r)))));
++    if (v_pos > self->private_impl.f_bitstream_wi) {
++      v_ret = 2u;
++    } else {
++      self->private_impl.f_bitstream_ri = v_pos;
++    }
++    v_r = o_0_v_r;
++    iop_v_r = o_0_iop_v_r;
++    io0_v_r = o_0_io0_v_r;
++    io1_v_r = o_0_io1_v_r;
++    io2_v_r = o_0_io2_v_r;
++  }
++  self->private_impl.f_bitstream_bits = v_bits;
++  self->private_impl.f_bitstream_n_bits = v_n_bits;
++  return v_ret;
++}
++
++// -------- func jpeg.decoder.decode_mcu_progressive_ac_high_bits
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint32_t
++wuffs_jpeg__decoder__decode_mcu_progressive_ac_high_bits(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__slice_u8 a_workbuf,
++    uint32_t a_mx,
++    uint32_t a_my) {
++  uint32_t v_ret = 0;
++  uint64_t v_bits = 0;
++  uint32_t v_n_bits = 0;
++  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
++  wuffs_base__io_buffer* v_r = &u_r;
++  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint32_t v_pos = 0;
++  const uint16_t* v_ac_huff_table_fast = NULL;
++  uint8_t v_ac_h = 0;
++  uint32_t v_ac_symbol = 0;
++  uint32_t v_ac_ht_fast = 0;
++  uint32_t v_ac_bl = 0;
++  uint32_t v_ac_code = 0;
++  uint32_t v_ac_blm1 = 0;
++  uint32_t v_ac_ht_slow = 0;
++  uint16_t v_ac_value = 0;
++  uint16_t v_ac_extend = 0;
++  uint32_t v_ac_rrrr = 0;
++  uint32_t v_ac_ssss = 0;
++  uint32_t v_z = 0;
++
++  if (self->private_impl.f_eob_run > 0u) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++    self->private_impl.f_eob_run -= 1u;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++    return 0u;
++  }
++  v_bits = self->private_impl.f_bitstream_bits;
++  v_n_bits = self->private_impl.f_bitstream_n_bits;
++  if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) {
++    return 2u;
++  }
++  {
++    wuffs_base__io_buffer* o_0_v_r = v_r;
++    const uint8_t* o_0_iop_v_r = iop_v_r;
++    const uint8_t* o_0_io0_v_r = io0_v_r;
++    const uint8_t* o_0_io1_v_r = io1_v_r;
++    const uint8_t* o_0_io2_v_r = io2_v_r;
++    v_r = wuffs_private_impl__io_reader__set(
++        &u_r,
++        &iop_v_r,
++        &io0_v_r,
++        &io1_v_r,
++        &io2_v_r,
++        wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
++        self->private_impl.f_bitstream_ri,
++        self->private_impl.f_bitstream_wi),
++        ((uint64_t)(self->private_impl.f_bitstream_ri)));
++    do {
++      do {
++        if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
++          v_ret = 1u;
++          goto label__goto_done__break;
++        }
++        if (v_n_bits < 16u) {
++          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
++        }
++        v_z = self->private_impl.f_mcu_zig_index;
++        self->private_impl.f_mcu_zig_index = 0u;
++        v_ac_h = self->private_impl.f_mcu_blocks_ac_hselector[0u];
++        v_ac_huff_table_fast = &self->private_impl.f_huff_tables_fast[v_ac_h][0u];
++        while (v_z <= ((uint32_t)(self->private_impl.f_scan_se))) {
++          v_ac_ht_fast = ((uint32_t)(v_ac_huff_table_fast[(v_bits >> 56u)]));
++          if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
++            v_ret = 2u;
++            goto label__goto_done__break;
++          }
++          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
++          iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
++          v_n_bits |= 56u;
++          v_ac_bl = (v_ac_ht_fast >> 8u);
++          if (v_n_bits >= v_ac_bl) {
++            v_ac_symbol = (255u & v_ac_ht_fast);
++            v_bits <<= (v_ac_bl & 63u);
++            v_n_bits -= v_ac_bl;
++          } else {
++            v_ac_code = ((uint32_t)((v_bits >> 55u)));
++            v_ac_blm1 = 8u;
++            v_bits <<= 9u;
++            v_n_bits -= 9u;
++            while (true) {
++              v_ac_ht_slow = self->private_impl.f_huff_tables_slow[v_ac_h][v_ac_blm1];
++              if (v_ac_code < (v_ac_ht_slow >> 8u)) {
++                v_ac_symbol = ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_ac_h][(255u & ((uint32_t)(v_ac_code + v_ac_ht_slow)))]));
++                break;
++              }
++              v_ac_code = (((uint32_t)(v_ac_code << 1u)) | ((uint32_t)((v_bits >> 63u))));
++              v_bits <<= 1u;
++              v_n_bits -= 1u;
++              v_ac_blm1 = ((v_ac_blm1 + 1u) & 15u);
++              if (v_ac_blm1 == 0u) {
++                v_ac_symbol = 0u;
++                break;
++              }
++            }
++          }
++          v_ac_rrrr = (v_ac_symbol >> 4u);
++          v_z += (v_ac_rrrr + 1u);
++          v_ac_ssss = (v_ac_symbol & 15u);
++          v_ac_extend = WUFFS_JPEG__EXTEND[v_ac_ssss];
++          if (v_ac_ssss > 0u) {
++            v_ac_value = ((uint16_t)((v_bits >> (64u - v_ac_ssss))));
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++            v_ac_value += ((uint16_t)(v_ac_extend & ((uint16_t)(((uint16_t)(wuffs_base__utility__sign_extend_rshift_u64(v_bits, 63u))) ^ 65535u))));
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++            v_bits <<= v_ac_ssss;
++            v_n_bits -= v_ac_ssss;
++            self->private_data.f_mcu_blocks[0u][WUFFS_JPEG__UNZIG[v_z]] = ((uint16_t)(((uint16_t)(v_ac_value << self->private_impl.f_scan_al))));
++          } else if (v_ac_rrrr < 15u) {
++            self->private_impl.f_eob_run = ((uint16_t)(((uint16_t)(((uint16_t)(((uint16_t)(1u)) << v_ac_rrrr)) - 1u))));
++            if (v_ac_rrrr > 0u) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++              self->private_impl.f_eob_run += ((uint16_t)((v_bits >> (64u - v_ac_rrrr))));
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++              v_bits <<= v_ac_rrrr;
++              v_n_bits -= v_ac_rrrr;
++            }
++            break;
++          }
++        }
++      } while (0);
++    } while (0);
++    label__goto_done__break:;
++    v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r)))));
++    if (v_pos > self->private_impl.f_bitstream_wi) {
++      v_ret = 2u;
++    } else {
++      self->private_impl.f_bitstream_ri = v_pos;
++    }
++    v_r = o_0_v_r;
++    iop_v_r = o_0_iop_v_r;
++    io0_v_r = o_0_io0_v_r;
++    io1_v_r = o_0_io1_v_r;
++    io2_v_r = o_0_io2_v_r;
++  }
++  self->private_impl.f_bitstream_bits = v_bits;
++  self->private_impl.f_bitstream_n_bits = v_n_bits;
++  return v_ret;
++}
++
++// -------- func jpeg.decoder.decode_mcu_progressive_ac_low_bit
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint32_t
++wuffs_jpeg__decoder__decode_mcu_progressive_ac_low_bit(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__slice_u8 a_workbuf,
++    uint32_t a_mx,
++    uint32_t a_my) {
++  uint32_t v_ret = 0;
++  uint64_t v_bits = 0;
++  uint32_t v_n_bits = 0;
++  uint16_t v_one_lshift_scan_al = 0;
++  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
++  wuffs_base__io_buffer* v_r = &u_r;
++  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint32_t v_pos = 0;
++  const uint16_t* v_ac_huff_table_fast = NULL;
++  uint8_t v_ac_h = 0;
++  uint32_t v_ac_symbol = 0;
++  uint32_t v_ac_ht_fast = 0;
++  uint32_t v_ac_bl = 0;
++  uint32_t v_ac_code = 0;
++  uint32_t v_ac_blm1 = 0;
++  uint32_t v_ac_ht_slow = 0;
++  uint16_t v_ac_value = 0;
++  uint32_t v_ac_rrrr = 0;
++  uint32_t v_ac_ssss = 0;
++  uint8_t v_unzig = 0;
++  bool v_bit = false;
++
++  v_bits = self->private_impl.f_bitstream_bits;
++  v_n_bits = self->private_impl.f_bitstream_n_bits;
++  v_one_lshift_scan_al = ((uint16_t)(((uint16_t)(1u)) << self->private_impl.f_scan_al));
++  if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) {
++    return 2u;
++  }
++  {
++    wuffs_base__io_buffer* o_0_v_r = v_r;
++    const uint8_t* o_0_iop_v_r = iop_v_r;
++    const uint8_t* o_0_io0_v_r = io0_v_r;
++    const uint8_t* o_0_io1_v_r = io1_v_r;
++    const uint8_t* o_0_io2_v_r = io2_v_r;
++    v_r = wuffs_private_impl__io_reader__set(
++        &u_r,
++        &iop_v_r,
++        &io0_v_r,
++        &io1_v_r,
++        &io2_v_r,
++        wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
++        self->private_impl.f_bitstream_ri,
++        self->private_impl.f_bitstream_wi),
++        ((uint64_t)(self->private_impl.f_bitstream_ri)));
++    do {
++      do {
++        if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
++          v_ret = 1u;
++          goto label__goto_done__break;
++        }
++        while (true) {
++          if (self->private_impl.f_eob_run > 0u) {
++            break;
++          }
++          v_ac_h = self->private_impl.f_mcu_blocks_ac_hselector[0u];
++          v_ac_huff_table_fast = &self->private_impl.f_huff_tables_fast[v_ac_h][0u];
++          while (true) {
++            if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
++              v_ret = 2u;
++              goto label__goto_done__break;
++            }
++            v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
++            iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
++            v_n_bits |= 56u;
++            v_ac_ht_fast = ((uint32_t)(v_ac_huff_table_fast[(v_bits >> 56u)]));
++            v_ac_bl = (v_ac_ht_fast >> 8u);
++            if (v_n_bits >= v_ac_bl) {
++              v_ac_symbol = (255u & v_ac_ht_fast);
++              v_bits <<= (v_ac_bl & 63u);
++              v_n_bits -= v_ac_bl;
++            } else {
++              v_ac_code = ((uint32_t)((v_bits >> 55u)));
++              v_ac_blm1 = 8u;
++              v_bits <<= 9u;
++              v_n_bits -= 9u;
++              while (true) {
++                v_ac_ht_slow = self->private_impl.f_huff_tables_slow[v_ac_h][v_ac_blm1];
++                if (v_ac_code < (v_ac_ht_slow >> 8u)) {
++                  v_ac_symbol = ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_ac_h][(255u & ((uint32_t)(v_ac_code + v_ac_ht_slow)))]));
++                  break;
++                }
++                v_ac_code = (((uint32_t)(v_ac_code << 1u)) | ((uint32_t)((v_bits >> 63u))));
++                v_bits <<= 1u;
++                v_n_bits -= 1u;
++                v_ac_blm1 = ((v_ac_blm1 + 1u) & 15u);
++                if (v_ac_blm1 == 0u) {
++                  v_ac_symbol = 0u;
++                  break;
++                }
++              }
++            }
++            v_ac_rrrr = (v_ac_symbol >> 4u);
++            v_ac_ssss = (v_ac_symbol & 15u);
++            v_ac_value = 0u;
++            if (v_ac_ssss > 0u) {
++              v_ac_value = ((uint16_t)(((uint16_t)(1u)) << self->private_impl.f_scan_al));
++              if ((v_bits >> 63u) == 0u) {
++                v_ac_value = ((uint16_t)(((uint16_t)(65535u)) << self->private_impl.f_scan_al));
++              }
++              v_bits <<= 1u;
++              v_n_bits -= 1u;
++            } else if (v_ac_rrrr < 15u) {
++              self->private_impl.f_eob_run = ((uint16_t)(((uint16_t)(1u)) << v_ac_rrrr));
++              if (v_ac_rrrr > 0u) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++                self->private_impl.f_eob_run += ((uint16_t)((v_bits >> (64u - v_ac_rrrr))));
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++                v_bits <<= v_ac_rrrr;
++                v_n_bits -= v_ac_rrrr;
++              }
++              goto label__goto_do_eob__break;
++            }
++            while (true) {
++              v_unzig = WUFFS_JPEG__UNZIG[(1u + self->private_impl.f_mcu_zig_index)];
++              if (self->private_data.f_mcu_blocks[0u][v_unzig] != 0u) {
++                if (v_n_bits == 0u) {
++                  if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
++                    v_ret = 2u;
++                    goto label__goto_done__break;
++                  }
++                  v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
++                  iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
++                  v_n_bits |= 56u;
++                }
++                v_bit = ((v_bits >> 63u) > 0u);
++                v_bits <<= 1u;
++                v_n_bits -= 1u;
++                if (v_bit) {
++                  if (self->private_data.f_mcu_blocks[0u][v_unzig] < 32768u) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++                    self->private_data.f_mcu_blocks[0u][v_unzig] += v_one_lshift_scan_al;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++                  } else {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++                    self->private_data.f_mcu_blocks[0u][v_unzig] -= v_one_lshift_scan_al;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++                  }
++                }
++              } else if (v_ac_rrrr <= 0u) {
++                break;
++              } else {
++                v_ac_rrrr -= 1u;
++              }
++              if (self->private_impl.f_mcu_zig_index >= ((uint32_t)(self->private_impl.f_scan_se))) {
++                break;
++              }
++              self->private_impl.f_mcu_zig_index += 1u;
++            }
++            if (v_ac_value != 0u) {
++              self->private_data.f_mcu_blocks[0u][WUFFS_JPEG__UNZIG[(1u + self->private_impl.f_mcu_zig_index)]] = v_ac_value;
++            }
++            if (self->private_impl.f_mcu_zig_index >= ((uint32_t)(self->private_impl.f_scan_se))) {
++              break;
++            }
++            self->private_impl.f_mcu_zig_index += 1u;
++          }
++          goto label__block__break;
++        }
++        label__goto_do_eob__break:;
++        if (self->private_impl.f_eob_run <= 0u) {
++          v_ret = 2u;
++          goto label__goto_done__break;
++        }
++        while (true) {
++          v_unzig = WUFFS_JPEG__UNZIG[(1u + self->private_impl.f_mcu_zig_index)];
++          if (self->private_data.f_mcu_blocks[0u][v_unzig] != 0u) {
++            if (v_n_bits == 0u) {
++              if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
++                v_ret = 2u;
++                goto label__goto_done__break;
++              }
++              v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
++              iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
++              v_n_bits |= 56u;
++            }
++            v_bit = ((v_bits >> 63u) > 0u);
++            v_bits <<= 1u;
++            v_n_bits -= 1u;
++            if (v_bit) {
++              if (self->private_data.f_mcu_blocks[0u][v_unzig] < 32768u) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++                self->private_data.f_mcu_blocks[0u][v_unzig] += v_one_lshift_scan_al;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++              } else {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++                self->private_data.f_mcu_blocks[0u][v_unzig] -= v_one_lshift_scan_al;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++              }
++            }
++          }
++          if (self->private_impl.f_mcu_zig_index >= ((uint32_t)(self->private_impl.f_scan_se))) {
++            break;
++          }
++          self->private_impl.f_mcu_zig_index += 1u;
++        }
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        self->private_impl.f_eob_run -= 1u;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++      } while (0);
++      label__block__break:;
++    } while (0);
++    label__goto_done__break:;
++    v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r)))));
++    if (v_pos > self->private_impl.f_bitstream_wi) {
++      v_ret = 2u;
++    } else {
++      self->private_impl.f_bitstream_ri = v_pos;
++    }
++    v_r = o_0_v_r;
++    iop_v_r = o_0_iop_v_r;
++    io0_v_r = o_0_io0_v_r;
++    io1_v_r = o_0_io1_v_r;
++    io2_v_r = o_0_io2_v_r;
++  }
++  self->private_impl.f_bitstream_bits = v_bits;
++  self->private_impl.f_bitstream_n_bits = v_n_bits;
++  return v_ret;
++}
++
++// -------- func jpeg.decoder.decode_mcu_progressive_dc_high_bits
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint32_t
++wuffs_jpeg__decoder__decode_mcu_progressive_dc_high_bits(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__slice_u8 a_workbuf,
++    uint32_t a_mx,
++    uint32_t a_my) {
++  uint32_t v_ret = 0;
++  uint64_t v_bits = 0;
++  uint32_t v_n_bits = 0;
++  uint8_t v_csel = 0;
++  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
++  wuffs_base__io_buffer* v_r = &u_r;
++  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint32_t v_pos = 0;
++  uint8_t v_dc_h = 0;
++  uint32_t v_dc_symbol = 0;
++  uint32_t v_dc_ht_fast = 0;
++  uint32_t v_dc_bl = 0;
++  uint32_t v_dc_code = 0;
++  uint32_t v_dc_blm1 = 0;
++  uint32_t v_dc_ht_slow = 0;
++  uint16_t v_dc_value = 0;
++  uint16_t v_dc_extend = 0;
++
++  v_bits = self->private_impl.f_bitstream_bits;
++  v_n_bits = self->private_impl.f_bitstream_n_bits;
++  if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) {
++    return 2u;
++  }
++  {
++    wuffs_base__io_buffer* o_0_v_r = v_r;
++    const uint8_t* o_0_iop_v_r = iop_v_r;
++    const uint8_t* o_0_io0_v_r = io0_v_r;
++    const uint8_t* o_0_io1_v_r = io1_v_r;
++    const uint8_t* o_0_io2_v_r = io2_v_r;
++    v_r = wuffs_private_impl__io_reader__set(
++        &u_r,
++        &iop_v_r,
++        &io0_v_r,
++        &io1_v_r,
++        &io2_v_r,
++        wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
++        self->private_impl.f_bitstream_ri,
++        self->private_impl.f_bitstream_wi),
++        ((uint64_t)(self->private_impl.f_bitstream_ri)));
++    do {
++      while (self->private_impl.f_mcu_current_block < self->private_impl.f_mcu_num_blocks) {
++        if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
++          v_ret = 1u;
++          goto label__goto_done__break;
++        }
++        do {
++          if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
++            v_ret = 2u;
++            goto label__goto_done__break;
++          }
++          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
++          iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
++          v_n_bits |= 56u;
++          v_dc_h = self->private_impl.f_mcu_blocks_dc_hselector[self->private_impl.f_mcu_current_block];
++          v_dc_ht_fast = ((uint32_t)(self->private_impl.f_huff_tables_fast[v_dc_h][(v_bits >> 56u)]));
++          v_dc_bl = (v_dc_ht_fast >> 8u);
++          if (v_n_bits >= v_dc_bl) {
++            v_dc_symbol = (15u & v_dc_ht_fast);
++            v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
++            v_bits <<= (v_dc_bl & 63u);
++            v_n_bits -= v_dc_bl;
++          } else {
++            v_dc_code = ((uint32_t)((v_bits >> 55u)));
++            v_dc_blm1 = 8u;
++            v_bits <<= 9u;
++            v_n_bits -= 9u;
++            while (true) {
++              v_dc_ht_slow = self->private_impl.f_huff_tables_slow[v_dc_h][v_dc_blm1];
++              if (v_dc_code < (v_dc_ht_slow >> 8u)) {
++                v_dc_symbol = (15u & ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_dc_h][(255u & ((uint32_t)(v_dc_code + v_dc_ht_slow)))])));
++                v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
++                break;
++              }
++              v_dc_code = (((uint32_t)(v_dc_code << 1u)) | ((uint32_t)((v_bits >> 63u))));
++              v_bits <<= 1u;
++              v_n_bits -= 1u;
++              v_dc_blm1 = ((v_dc_blm1 + 1u) & 15u);
++              if (v_dc_blm1 == 0u) {
++                v_dc_symbol = 0u;
++                v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
++                break;
++              }
++            }
++          }
++          v_dc_value = ((uint16_t)(((v_bits >> 32u) >> (32u - v_dc_symbol))));
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++          v_dc_value += ((uint16_t)(v_dc_extend & ((uint16_t)(((uint16_t)(wuffs_base__utility__sign_extend_rshift_u64(v_bits, 63u))) ^ 65535u))));
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++          v_bits <<= v_dc_symbol;
++          v_n_bits -= v_dc_symbol;
++          v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[self->private_impl.f_mcu_current_block]];
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++          self->private_impl.f_mcu_previous_dc_values[v_csel] += v_dc_value;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++          self->private_data.f_mcu_blocks[self->private_impl.f_mcu_current_block][0u] = ((uint16_t)(self->private_impl.f_mcu_previous_dc_values[v_csel] << self->private_impl.f_scan_al));
++        } while (0);
++        self->private_impl.f_mcu_current_block += 1u;
++      }
++      self->private_impl.f_mcu_current_block = 0u;
++    } while (0);
++    label__goto_done__break:;
++    v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r)))));
++    if (v_pos > self->private_impl.f_bitstream_wi) {
++      v_ret = 2u;
++    } else {
++      self->private_impl.f_bitstream_ri = v_pos;
++    }
++    v_r = o_0_v_r;
++    iop_v_r = o_0_iop_v_r;
++    io0_v_r = o_0_io0_v_r;
++    io1_v_r = o_0_io1_v_r;
++    io2_v_r = o_0_io2_v_r;
++  }
++  self->private_impl.f_bitstream_bits = v_bits;
++  self->private_impl.f_bitstream_n_bits = v_n_bits;
++  return v_ret;
++}
++
++// -------- func jpeg.decoder.decode_mcu_progressive_dc_low_bit
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint32_t
++wuffs_jpeg__decoder__decode_mcu_progressive_dc_low_bit(
++    wuffs_jpeg__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__slice_u8 a_workbuf,
++    uint32_t a_mx,
++    uint32_t a_my) {
++  uint32_t v_ret = 0;
++  uint64_t v_bits = 0;
++  uint32_t v_n_bits = 0;
++  uint16_t v_one_lshift_scan_al = 0;
++  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
++  wuffs_base__io_buffer* v_r = &u_r;
++  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint32_t v_pos = 0;
++
++  v_bits = self->private_impl.f_bitstream_bits;
++  v_n_bits = self->private_impl.f_bitstream_n_bits;
++  v_one_lshift_scan_al = ((uint16_t)(((uint16_t)(1u)) << self->private_impl.f_scan_al));
++  if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) {
++    return 2u;
++  }
++  {
++    wuffs_base__io_buffer* o_0_v_r = v_r;
++    const uint8_t* o_0_iop_v_r = iop_v_r;
++    const uint8_t* o_0_io0_v_r = io0_v_r;
++    const uint8_t* o_0_io1_v_r = io1_v_r;
++    const uint8_t* o_0_io2_v_r = io2_v_r;
++    v_r = wuffs_private_impl__io_reader__set(
++        &u_r,
++        &iop_v_r,
++        &io0_v_r,
++        &io1_v_r,
++        &io2_v_r,
++        wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
++        self->private_impl.f_bitstream_ri,
++        self->private_impl.f_bitstream_wi),
++        ((uint64_t)(self->private_impl.f_bitstream_ri)));
++    do {
++      while (self->private_impl.f_mcu_current_block < self->private_impl.f_mcu_num_blocks) {
++        if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
++          v_ret = 1u;
++          goto label__goto_done__break;
++        }
++        do {
++          if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
++            v_ret = 2u;
++            goto label__goto_done__break;
++          }
++          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
++          iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
++          v_n_bits |= 56u;
++          if ((v_bits >> 63u) != 0u) {
++            self->private_data.f_mcu_blocks[self->private_impl.f_mcu_current_block][0u] |= v_one_lshift_scan_al;
++          }
++          v_bits <<= 1u;
++          v_n_bits -= 1u;
++        } while (0);
++        self->private_impl.f_mcu_current_block += 1u;
++      }
++      self->private_impl.f_mcu_current_block = 0u;
++    } while (0);
++    label__goto_done__break:;
++    v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r)))));
++    if (v_pos > self->private_impl.f_bitstream_wi) {
++      v_ret = 2u;
++    } else {
++      self->private_impl.f_bitstream_ri = v_pos;
++    }
++    v_r = o_0_v_r;
++    iop_v_r = o_0_iop_v_r;
++    io0_v_r = o_0_io0_v_r;
++    io1_v_r = o_0_io1_v_r;
++    io2_v_r = o_0_io2_v_r;
++  }
++  self->private_impl.f_bitstream_bits = v_bits;
++  self->private_impl.f_bitstream_n_bits = v_n_bits;
++  return v_ret;
++}
++
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JPEG)
++
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JSON)
++
++// ---------------- Status Codes Implementations
++
++const char wuffs_json__error__bad_c0_control_code[] = "#json: bad C0 control code";
++const char wuffs_json__error__bad_utf_8[] = "#json: bad UTF-8";
++const char wuffs_json__error__bad_backslash_escape[] = "#json: bad backslash-escape";
++const char wuffs_json__error__bad_input[] = "#json: bad input";
++const char wuffs_json__error__bad_new_line_in_a_string[] = "#json: bad new-line in a string";
++const char wuffs_json__error__bad_quirk_combination[] = "#json: bad quirk combination";
++const char wuffs_json__error__unsupported_number_length[] = "#json: unsupported number length";
++const char wuffs_json__error__unsupported_recursion_depth[] = "#json: unsupported recursion depth";
++const char wuffs_json__error__internal_error_inconsistent_i_o[] = "#json: internal error: inconsistent I/O";
++
++// ---------------- Private Consts
++
++#define WUFFS_JSON__DECODER_NUMBER_LENGTH_MAX_INCL 99u
++
++static const uint8_t
++WUFFS_JSON__LUT_BACKSLASHES[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 3u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 162u, 0u, 0u, 0u, 0u, 5u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 175u,
++  7u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 4u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 220u, 0u, 0u, 0u,
++  0u, 1u, 136u, 0u, 0u, 2u, 140u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 138u, 0u,
++  0u, 0u, 141u, 0u, 137u, 0u, 6u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++};
++
++static const uint8_t
++WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_QUIRKS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 1u, 3u, 4u, 5u, 6u, 7u, 10u,
++};
++
++static const uint8_t
++WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_CHARS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 7u, 27u, 10u, 63u, 39u, 11u, 0u,
++};
++
++static const uint8_t
++WUFFS_JSON__LUT_CHARS[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  128u, 129u, 130u, 131u, 132u, 133u, 134u, 135u,
++  136u, 137u, 138u, 139u, 140u, 141u, 142u, 143u,
++  144u, 145u, 146u, 147u, 148u, 149u, 150u, 151u,
++  152u, 153u, 154u, 155u, 156u, 157u, 158u, 159u,
++  0u, 0u, 1u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 2u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u,
++  16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u,
++  16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u,
++  16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u,
++  16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u,
++  16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u,
++  16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u,
++  16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u,
++  32u, 32u, 3u, 3u, 3u, 3u, 3u, 3u,
++  3u, 3u, 3u, 3u, 3u, 3u, 3u, 3u,
++  3u, 3u, 3u, 3u, 3u, 3u, 3u, 3u,
++  3u, 3u, 3u, 3u, 3u, 3u, 3u, 3u,
++  4u, 4u, 4u, 4u, 4u, 4u, 4u, 4u,
++  4u, 4u, 4u, 4u, 4u, 4u, 4u, 4u,
++  5u, 5u, 5u, 5u, 5u, 32u, 32u, 32u,
++  32u, 32u, 32u, 32u, 32u, 32u, 32u, 32u,
++};
++
++#define WUFFS_JSON__CLASS_WHITESPACE 0u
++
++#define WUFFS_JSON__CLASS_STRING 1u
++
++#define WUFFS_JSON__CLASS_COMMA 2u
++
++#define WUFFS_JSON__CLASS_COLON 3u
++
++#define WUFFS_JSON__CLASS_NUMBER 4u
++
++#define WUFFS_JSON__CLASS_OPEN_CURLY_BRACE 5u
++
++#define WUFFS_JSON__CLASS_CLOSE_CURLY_BRACE 6u
++
++#define WUFFS_JSON__CLASS_OPEN_SQUARE_BRACKET 7u
++
++#define WUFFS_JSON__CLASS_CLOSE_SQUARE_BRACKET 8u
++
++#define WUFFS_JSON__CLASS_FALSE 9u
++
++#define WUFFS_JSON__CLASS_TRUE 10u
++
++#define WUFFS_JSON__CLASS_NULL_NAN_INF 11u
++
++#define WUFFS_JSON__CLASS_COMMENT 12u
++
++#define WUFFS_JSON__EXPECT_VALUE 7858u
++
++#define WUFFS_JSON__EXPECT_NON_STRING_VALUE 7856u
++
++#define WUFFS_JSON__EXPECT_STRING 4098u
++
++#define WUFFS_JSON__EXPECT_COMMA 4100u
++
++#define WUFFS_JSON__EXPECT_COLON 4104u
++
++#define WUFFS_JSON__EXPECT_NUMBER 4112u
++
++#define WUFFS_JSON__EXPECT_CLOSE_CURLY_BRACE 4160u
++
++#define WUFFS_JSON__EXPECT_CLOSE_SQUARE_BRACKET 4352u
++
++static const uint8_t
++WUFFS_JSON__LUT_CLASSES[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
++  15u, 0u, 0u, 15u, 15u, 0u, 15u, 15u,
++  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
++  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
++  0u, 15u, 1u, 15u, 15u, 15u, 15u, 15u,
++  15u, 15u, 15u, 11u, 2u, 4u, 15u, 12u,
++  4u, 4u, 4u, 4u, 4u, 4u, 4u, 4u,
++  4u, 4u, 3u, 15u, 15u, 15u, 15u, 15u,
++  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
++  15u, 11u, 15u, 15u, 15u, 15u, 11u, 15u,
++  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
++  15u, 15u, 15u, 7u, 15u, 8u, 15u, 15u,
++  15u, 15u, 15u, 15u, 15u, 15u, 9u, 15u,
++  15u, 11u, 15u, 15u, 15u, 15u, 11u, 15u,
++  15u, 15u, 15u, 15u, 10u, 15u, 15u, 15u,
++  15u, 15u, 15u, 5u, 15u, 6u, 15u, 15u,
++  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
++  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
++  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
++  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
++  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
++  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
++  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
++  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
++  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
++  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
++  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
++  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
++  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
++  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
++  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
++  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
++};
++
++static const uint8_t
++WUFFS_JSON__LUT_DECIMAL_DIGITS[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  128u, 129u, 130u, 131u, 132u, 133u, 134u, 135u,
++  136u, 137u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++};
++
++static const uint8_t
++WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  128u, 129u, 130u, 131u, 132u, 133u, 134u, 135u,
++  136u, 137u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 138u, 139u, 140u, 141u, 142u, 143u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 138u, 139u, 140u, 141u, 142u, 143u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++};
++
++#define WUFFS_JSON__QUIRKS_BASE 1225364480u
++
++#define WUFFS_JSON__QUIRKS_COUNT 21u
++
++// ---------------- Private Initializer Prototypes
++
++// ---------------- Private Function Prototypes
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint32_t
++wuffs_json__decoder__decode_number(
++    wuffs_json__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint32_t
++wuffs_json__decoder__decode_digits(
++    wuffs_json__decoder* self,
++    wuffs_base__io_buffer* a_src,
++    uint32_t a_n);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_json__decoder__decode_leading(
++    wuffs_json__decoder* self,
++    wuffs_base__token_buffer* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_json__decoder__decode_comment(
++    wuffs_json__decoder* self,
++    wuffs_base__token_buffer* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_json__decoder__decode_inf_nan(
++    wuffs_json__decoder* self,
++    wuffs_base__token_buffer* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_json__decoder__decode_trailer(
++    wuffs_json__decoder* self,
++    wuffs_base__token_buffer* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++// ---------------- VTables
++
++const wuffs_base__token_decoder__func_ptrs
++wuffs_json__decoder__func_ptrs_for__wuffs_base__token_decoder = {
++  (wuffs_base__status(*)(void*,
++      wuffs_base__token_buffer*,
++      wuffs_base__io_buffer*,
++      wuffs_base__slice_u8))(&wuffs_json__decoder__decode_tokens),
++  (uint64_t(*)(const void*,
++      uint32_t))(&wuffs_json__decoder__get_quirk),
++  (wuffs_base__status(*)(void*,
++      uint32_t,
++      uint64_t))(&wuffs_json__decoder__set_quirk),
++  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_json__decoder__workbuf_len),
++};
++
++// ---------------- Initializer Implementations
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_json__decoder__initialize(
++    wuffs_json__decoder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options){
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (sizeof(*self) != sizeof_star_self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  }
++  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
++      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++  }
++
++  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
++    // The whole point of this if-check is to detect an uninitialized *self.
++    // We disable the warning on GCC. Clang-5.0 does not have this warning.
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++#endif
++    if (self->private_impl.magic != 0) {
++      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++    }
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++  } else {
++    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
++      memset(self, 0, sizeof(*self));
++      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
++    } else {
++      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++    }
++  }
++
++  self->private_impl.magic = WUFFS_BASE__MAGIC;
++  self->private_impl.vtable_for__wuffs_base__token_decoder.vtable_name =
++      wuffs_base__token_decoder__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__token_decoder.function_pointers =
++      (const void*)(&wuffs_json__decoder__func_ptrs_for__wuffs_base__token_decoder);
++  return wuffs_base__make_status(NULL);
++}
++
++wuffs_json__decoder*
++wuffs_json__decoder__alloc(void) {
++  wuffs_json__decoder* x =
++      (wuffs_json__decoder*)(calloc(1, sizeof(wuffs_json__decoder)));
++  if (!x) {
++    return NULL;
++  }
++  if (wuffs_json__decoder__initialize(
++      x, sizeof(wuffs_json__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++    free(x);
++    return NULL;
++  }
++  return x;
++}
++
++size_t
++sizeof__wuffs_json__decoder(void) {
++  return sizeof(wuffs_json__decoder);
++}
++
++// ---------------- Function Implementations
++
++// -------- func json.decoder.get_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_json__decoder__get_quirk(
++    const wuffs_json__decoder* self,
++    uint32_t a_key) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  uint32_t v_key = 0;
++
++  if (a_key >= 1225364480u) {
++    v_key = (a_key - 1225364480u);
++    if (v_key < 21u) {
++      if (self->private_impl.f_quirks[v_key]) {
++        return 1u;
++      }
++    }
++  }
++  return 0u;
++}
++
++// -------- func json.decoder.set_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_json__decoder__set_quirk(
++    wuffs_json__decoder* self,
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++
++  if (a_key >= 1225364480u) {
++    a_key -= 1225364480u;
++    if (a_key < 21u) {
++      self->private_impl.f_quirks[a_key] = (a_value > 0u);
++      return wuffs_base__make_status(NULL);
++    }
++  }
++  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++}
++
++// -------- func json.decoder.workbuf_len
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_json__decoder__workbuf_len(
++    const wuffs_json__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++
++  return wuffs_base__utility__empty_range_ii_u64();
++}
++
++// -------- func json.decoder.decode_tokens
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_json__decoder__decode_tokens(
++    wuffs_json__decoder* self,
++    wuffs_base__token_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_dst || !a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 1)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint32_t v_vminor = 0;
++  uint32_t v_number_length = 0;
++  uint32_t v_number_status = 0;
++  uint32_t v_string_length = 0;
++  uint32_t v_whitespace_length = 0;
++  uint32_t v_depth = 0;
++  uint32_t v_stack_byte = 0;
++  uint32_t v_stack_bit = 0;
++  uint32_t v_match = 0;
++  uint32_t v_c32 = 0;
++  uint8_t v_c8 = 0;
++  uint8_t v_backslash = 0;
++  uint8_t v_char = 0;
++  uint8_t v_class = 0;
++  uint32_t v_multi_byte_utf8 = 0;
++  uint8_t v_backslash_x_ok = 0;
++  uint8_t v_backslash_x_value = 0;
++  uint32_t v_backslash_x_string = 0;
++  uint8_t v_uni4_ok = 0;
++  uint64_t v_uni4_string = 0;
++  uint32_t v_uni4_value = 0;
++  uint32_t v_uni4_high_surrogate = 0;
++  uint8_t v_uni8_ok = 0;
++  uint64_t v_uni8_string = 0;
++  uint32_t v_uni8_value = 0;
++  uint32_t v_expect = 0;
++  uint32_t v_expect_after_value = 0;
++
++  wuffs_base__token* iop_a_dst = NULL;
++  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
++    }
++  }
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_tokens;
++  if (coro_susp_point) {
++    v_depth = self->private_data.s_decode_tokens.v_depth;
++    v_expect = self->private_data.s_decode_tokens.v_expect;
++    v_expect_after_value = self->private_data.s_decode_tokens.v_expect_after_value;
++  }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_end_of_data) {
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
++    }
++    if (self->private_impl.f_quirks[18u]) {
++      if (self->private_impl.f_quirks[11u] || self->private_impl.f_quirks[12u] || self->private_impl.f_quirks[17u]) {
++        status = wuffs_base__make_status(wuffs_json__error__bad_quirk_combination);
++        goto exit;
++      }
++    }
++    if (self->private_impl.f_quirks[15u] || self->private_impl.f_quirks[16u]) {
++      if (a_dst) {
++        a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++      }
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      status = wuffs_json__decoder__decode_leading(self, a_dst, a_src);
++      if (a_dst) {
++        iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
++      }
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++    }
++    v_expect = 7858u;
++    label__outer__continue:;
++    while (true) {
++      while (true) {
++        if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
++          goto label__outer__continue;
++        }
++        v_whitespace_length = 0u;
++        v_c8 = 0u;
++        v_class = 0u;
++        while (true) {
++          if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++            if (v_whitespace_length > 0u) {
++              *iop_a_dst++ = wuffs_base__make_token(
++                  (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                  (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++              v_whitespace_length = 0u;
++            }
++            if (a_src && a_src->meta.closed) {
++              status = wuffs_base__make_status(wuffs_json__error__bad_input);
++              goto exit;
++            }
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
++            goto label__outer__continue;
++          }
++          v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++          v_class = WUFFS_JSON__LUT_CLASSES[v_c8];
++          if (v_class != 0u) {
++            break;
++          }
++          iop_a_src += 1u;
++          if (v_whitespace_length >= 65534u) {
++            *iop_a_dst++ = wuffs_base__make_token(
++                (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                (((uint64_t)(65535u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++            v_whitespace_length = 0u;
++            goto label__outer__continue;
++          }
++          v_whitespace_length += 1u;
++        }
++        if (v_whitespace_length > 0u) {
++          *iop_a_dst++ = wuffs_base__make_token(
++              (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++              (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++          v_whitespace_length = 0u;
++          if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++            goto label__outer__continue;
++          }
++        }
++        if (0u == (v_expect & (((uint32_t)(1u)) << v_class))) {
++          status = wuffs_base__make_status(wuffs_json__error__bad_input);
++          goto exit;
++        }
++        if (v_class == 1u) {
++          *iop_a_dst++ = wuffs_base__make_token(
++              (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++          iop_a_src += 1u;
++          label__string_loop_outer__continue:;
++          while (true) {
++            if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
++              continue;
++            }
++            v_string_length = 0u;
++            while (true) {
++              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++                if (v_string_length > 0u) {
++                  *iop_a_dst++ = wuffs_base__make_token(
++                      (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                      (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                  v_string_length = 0u;
++                }
++                if (a_src && a_src->meta.closed) {
++                  status = wuffs_base__make_status(wuffs_json__error__bad_input);
++                  goto exit;
++                }
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
++                goto label__string_loop_outer__continue;
++              }
++              while (((uint64_t)(io2_a_src - iop_a_src)) > 4u) {
++                v_c32 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++                if (0u != (WUFFS_JSON__LUT_CHARS[(255u & (v_c32 >> 0u))] |
++                    WUFFS_JSON__LUT_CHARS[(255u & (v_c32 >> 8u))] |
++                    WUFFS_JSON__LUT_CHARS[(255u & (v_c32 >> 16u))] |
++                    WUFFS_JSON__LUT_CHARS[(255u & (v_c32 >> 24u))])) {
++                  break;
++                }
++                iop_a_src += 4u;
++                if (v_string_length > 65527u) {
++                  *iop_a_dst++ = wuffs_base__make_token(
++                      (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                      (((uint64_t)((v_string_length + 4u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                  v_string_length = 0u;
++                  goto label__string_loop_outer__continue;
++                }
++                v_string_length += 4u;
++              }
++              v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++              v_char = WUFFS_JSON__LUT_CHARS[v_c8];
++              if (v_char == 0u) {
++                iop_a_src += 1u;
++                if (v_string_length >= 65531u) {
++                  *iop_a_dst++ = wuffs_base__make_token(
++                      (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                      (((uint64_t)(65532u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                  v_string_length = 0u;
++                  goto label__string_loop_outer__continue;
++                }
++                v_string_length += 1u;
++                continue;
++              } else if (v_char == 1u) {
++                if (v_string_length != 0u) {
++                  *iop_a_dst++ = wuffs_base__make_token(
++                      (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                      (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                  v_string_length = 0u;
++                }
++                goto label__string_loop_outer__break;
++              } else if (v_char == 2u) {
++                if (v_string_length > 0u) {
++                  *iop_a_dst++ = wuffs_base__make_token(
++                      (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                      (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                  v_string_length = 0u;
++                  if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++                    goto label__string_loop_outer__continue;
++                  }
++                }
++                if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
++                  if (a_src && a_src->meta.closed) {
++                    status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
++                    goto exit;
++                  }
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
++                  goto label__string_loop_outer__continue;
++                }
++                v_c8 = ((uint8_t)(((uint16_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8u))));
++                v_backslash = WUFFS_JSON__LUT_BACKSLASHES[v_c8];
++                if (((uint8_t)(v_backslash & 128u)) != 0u) {
++                  iop_a_src += 2u;
++                  *iop_a_dst++ = wuffs_base__make_token(
++                      (((uint64_t)((6291456u | ((uint32_t)(((uint8_t)(v_backslash & 127u))))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                      (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                  goto label__string_loop_outer__continue;
++                } else if (v_backslash != 0u) {
++                  if (self->private_impl.f_quirks[WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_QUIRKS[((uint8_t)(v_backslash & 7u))]]) {
++                    iop_a_src += 2u;
++                    *iop_a_dst++ = wuffs_base__make_token(
++                        (((uint64_t)((6291456u | ((uint32_t)(WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_CHARS[((uint8_t)(v_backslash & 7u))]))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                        (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                    goto label__string_loop_outer__continue;
++                  }
++                } else if (v_c8 == 117u) {
++                  if (((uint64_t)(io2_a_src - iop_a_src)) < 6u) {
++                    if (a_src && a_src->meta.closed) {
++                      status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
++                      goto exit;
++                    }
++                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
++                    goto label__string_loop_outer__continue;
++                  }
++                  v_uni4_string = (((uint64_t)(wuffs_base__peek_u48le__no_bounds_check(iop_a_src))) >> 16u);
++                  v_uni4_value = 0u;
++                  v_uni4_ok = 128u;
++                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 0u))];
++                  v_uni4_ok &= v_c8;
++                  v_uni4_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 12u);
++                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 8u))];
++                  v_uni4_ok &= v_c8;
++                  v_uni4_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 8u);
++                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 16u))];
++                  v_uni4_ok &= v_c8;
++                  v_uni4_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 4u);
++                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 24u))];
++                  v_uni4_ok &= v_c8;
++                  v_uni4_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 0u);
++                  if (v_uni4_ok == 0u) {
++                  } else if ((v_uni4_value < 55296u) || (57343u < v_uni4_value)) {
++                    iop_a_src += 6u;
++                    *iop_a_dst++ = wuffs_base__make_token(
++                        (((uint64_t)((6291456u | v_uni4_value))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                        (((uint64_t)(6u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                    goto label__string_loop_outer__continue;
++                  } else if (v_uni4_value >= 56320u) {
++                  } else {
++                    if (((uint64_t)(io2_a_src - iop_a_src)) < 12u) {
++                      if (a_src && a_src->meta.closed) {
++                        if (self->private_impl.f_quirks[20u]) {
++                          iop_a_src += 6u;
++                          *iop_a_dst++ = wuffs_base__make_token(
++                              (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                              (((uint64_t)(6u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                          goto label__string_loop_outer__continue;
++                        }
++                        status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
++                        goto exit;
++                      }
++                      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
++                      goto label__string_loop_outer__continue;
++                    }
++                    v_uni4_string = (wuffs_base__peek_u64le__no_bounds_check(iop_a_src + 4u) >> 16u);
++                    if (((255u & (v_uni4_string >> 0u)) != 92u) || ((255u & (v_uni4_string >> 8u)) != 117u)) {
++                      v_uni4_high_surrogate = 0u;
++                      v_uni4_value = 0u;
++                      v_uni4_ok = 0u;
++                    } else {
++                      v_uni4_high_surrogate = (65536u + ((v_uni4_value - 55296u) << 10u));
++                      v_uni4_value = 0u;
++                      v_uni4_ok = 128u;
++                      v_uni4_string >>= 16u;
++                      v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 0u))];
++                      v_uni4_ok &= v_c8;
++                      v_uni4_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 12u);
++                      v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 8u))];
++                      v_uni4_ok &= v_c8;
++                      v_uni4_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 8u);
++                      v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 16u))];
++                      v_uni4_ok &= v_c8;
++                      v_uni4_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 4u);
++                      v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 24u))];
++                      v_uni4_ok &= v_c8;
++                      v_uni4_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 0u);
++                    }
++                    if ((v_uni4_ok != 0u) && (56320u <= v_uni4_value) && (v_uni4_value <= 57343u)) {
++                      v_uni4_value -= 56320u;
++                      iop_a_src += 12u;
++                      *iop_a_dst++ = wuffs_base__make_token(
++                          (((uint64_t)((6291456u | v_uni4_high_surrogate | v_uni4_value))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                          (((uint64_t)(12u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                      goto label__string_loop_outer__continue;
++                    }
++                  }
++                  if (self->private_impl.f_quirks[20u]) {
++                    if (((uint64_t)(io2_a_src - iop_a_src)) < 6u) {
++                      status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
++                      goto exit;
++                    }
++                    iop_a_src += 6u;
++                    *iop_a_dst++ = wuffs_base__make_token(
++                        (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                        (((uint64_t)(6u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                    goto label__string_loop_outer__continue;
++                  }
++                } else if ((v_c8 == 85u) && self->private_impl.f_quirks[2u]) {
++                  if (((uint64_t)(io2_a_src - iop_a_src)) < 10u) {
++                    if (a_src && a_src->meta.closed) {
++                      status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
++                      goto exit;
++                    }
++                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
++                    goto label__string_loop_outer__continue;
++                  }
++                  v_uni8_string = wuffs_base__peek_u64le__no_bounds_check(iop_a_src + 2u);
++                  v_uni8_value = 0u;
++                  v_uni8_ok = 128u;
++                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 0u))];
++                  v_uni8_ok &= v_c8;
++                  v_uni8_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 28u);
++                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 8u))];
++                  v_uni8_ok &= v_c8;
++                  v_uni8_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 24u);
++                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 16u))];
++                  v_uni8_ok &= v_c8;
++                  v_uni8_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 20u);
++                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 24u))];
++                  v_uni8_ok &= v_c8;
++                  v_uni8_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 16u);
++                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 32u))];
++                  v_uni8_ok &= v_c8;
++                  v_uni8_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 12u);
++                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 40u))];
++                  v_uni8_ok &= v_c8;
++                  v_uni8_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 8u);
++                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 48u))];
++                  v_uni8_ok &= v_c8;
++                  v_uni8_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 4u);
++                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 56u))];
++                  v_uni8_ok &= v_c8;
++                  v_uni8_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 0u);
++                  if (v_uni8_ok == 0u) {
++                  } else if ((v_uni8_value < 55296u) || ((57343u < v_uni8_value) && (v_uni8_value <= 1114111u))) {
++                    iop_a_src += 10u;
++                    *iop_a_dst++ = wuffs_base__make_token(
++                        (((uint64_t)((6291456u | (v_uni8_value & 2097151u)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                        (((uint64_t)(10u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                    goto label__string_loop_outer__continue;
++                  } else if (self->private_impl.f_quirks[20u]) {
++                    iop_a_src += 10u;
++                    *iop_a_dst++ = wuffs_base__make_token(
++                        (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                        (((uint64_t)(10u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                    goto label__string_loop_outer__continue;
++                  }
++                } else if ((v_c8 == 120u) && self->private_impl.f_quirks[9u]) {
++                  if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
++                    if (a_src && a_src->meta.closed) {
++                      status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
++                      goto exit;
++                    }
++                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
++                    goto label__string_loop_outer__continue;
++                  }
++                  v_backslash_x_string = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++                  v_backslash_x_ok = 128u;
++                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_backslash_x_string >> 16u))];
++                  v_backslash_x_ok &= v_c8;
++                  v_backslash_x_value = ((uint8_t)(((uint8_t)(((uint8_t)(v_c8 & 15u)) << 4u))));
++                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_backslash_x_string >> 24u))];
++                  v_backslash_x_ok &= v_c8;
++                  v_backslash_x_value = ((uint8_t)(((uint8_t)(v_backslash_x_value | ((uint8_t)(v_c8 & 15u))))));
++                  if ((v_backslash_x_ok == 0u) || ((v_backslash_x_string & 65535u) != 30812u)) {
++                    status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
++                    goto exit;
++                  }
++                  iop_a_src += 4u;
++                  *iop_a_dst++ = wuffs_base__make_token(
++                      (((uint64_t)((6291456u | ((uint32_t)(v_backslash_x_value))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                      (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                  goto label__string_loop_outer__continue;
++                }
++                status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
++                goto exit;
++              } else if (v_char == 3u) {
++                if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
++                  if (v_string_length > 0u) {
++                    *iop_a_dst++ = wuffs_base__make_token(
++                        (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                        (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                    v_string_length = 0u;
++                    if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++                      goto label__string_loop_outer__continue;
++                    }
++                  }
++                  if (a_src && a_src->meta.closed) {
++                    if (self->private_impl.f_quirks[20u]) {
++                      *iop_a_dst++ = wuffs_base__make_token(
++                          (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                      iop_a_src += 1u;
++                      goto label__string_loop_outer__continue;
++                    }
++                    status = wuffs_base__make_status(wuffs_json__error__bad_utf_8);
++                    goto exit;
++                  }
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11);
++                  goto label__string_loop_outer__continue;
++                }
++                v_multi_byte_utf8 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
++                if ((v_multi_byte_utf8 & 49152u) == 32768u) {
++                  v_multi_byte_utf8 = ((1984u & ((uint32_t)(v_multi_byte_utf8 << 6u))) | (63u & (v_multi_byte_utf8 >> 8u)));
++                  iop_a_src += 2u;
++                  if (v_string_length >= 65528u) {
++                    *iop_a_dst++ = wuffs_base__make_token(
++                        (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                        (((uint64_t)((v_string_length + 2u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                    v_string_length = 0u;
++                    goto label__string_loop_outer__continue;
++                  }
++                  v_string_length += 2u;
++                  continue;
++                }
++              } else if (v_char == 4u) {
++                if (((uint64_t)(io2_a_src - iop_a_src)) < 3u) {
++                  if (v_string_length > 0u) {
++                    *iop_a_dst++ = wuffs_base__make_token(
++                        (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                        (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                    v_string_length = 0u;
++                    if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++                      goto label__string_loop_outer__continue;
++                    }
++                  }
++                  if (a_src && a_src->meta.closed) {
++                    if (self->private_impl.f_quirks[20u]) {
++                      *iop_a_dst++ = wuffs_base__make_token(
++                          (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                      iop_a_src += 1u;
++                      goto label__string_loop_outer__continue;
++                    }
++                    status = wuffs_base__make_status(wuffs_json__error__bad_utf_8);
++                    goto exit;
++                  }
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(12);
++                  goto label__string_loop_outer__continue;
++                }
++                v_multi_byte_utf8 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
++                if ((v_multi_byte_utf8 & 12632064u) == 8421376u) {
++                  v_multi_byte_utf8 = ((61440u & ((uint32_t)(v_multi_byte_utf8 << 12u))) | (4032u & (v_multi_byte_utf8 >> 2u)) | (63u & (v_multi_byte_utf8 >> 16u)));
++                  if ((2047u < v_multi_byte_utf8) && ((v_multi_byte_utf8 < 55296u) || (57343u < v_multi_byte_utf8))) {
++                    iop_a_src += 3u;
++                    if (v_string_length >= 65528u) {
++                      *iop_a_dst++ = wuffs_base__make_token(
++                          (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                          (((uint64_t)((v_string_length + 3u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                      v_string_length = 0u;
++                      goto label__string_loop_outer__continue;
++                    }
++                    v_string_length += 3u;
++                    continue;
++                  }
++                }
++              } else if (v_char == 5u) {
++                if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
++                  if (v_string_length > 0u) {
++                    *iop_a_dst++ = wuffs_base__make_token(
++                        (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                        (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                    v_string_length = 0u;
++                    if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++                      goto label__string_loop_outer__continue;
++                    }
++                  }
++                  if (a_src && a_src->meta.closed) {
++                    if (self->private_impl.f_quirks[20u]) {
++                      *iop_a_dst++ = wuffs_base__make_token(
++                          (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                      iop_a_src += 1u;
++                      goto label__string_loop_outer__continue;
++                    }
++                    status = wuffs_base__make_status(wuffs_json__error__bad_utf_8);
++                    goto exit;
++                  }
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(13);
++                  goto label__string_loop_outer__continue;
++                }
++                v_multi_byte_utf8 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++                if ((v_multi_byte_utf8 & 3233857536u) == 2155905024u) {
++                  v_multi_byte_utf8 = ((1835008u & ((uint32_t)(v_multi_byte_utf8 << 18u))) |
++                      (258048u & ((uint32_t)(v_multi_byte_utf8 << 4u))) |
++                      (4032u & (v_multi_byte_utf8 >> 10u)) |
++                      (63u & (v_multi_byte_utf8 >> 24u)));
++                  if ((65535u < v_multi_byte_utf8) && (v_multi_byte_utf8 <= 1114111u)) {
++                    iop_a_src += 4u;
++                    if (v_string_length >= 65528u) {
++                      *iop_a_dst++ = wuffs_base__make_token(
++                          (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                          (((uint64_t)((v_string_length + 4u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                      v_string_length = 0u;
++                      goto label__string_loop_outer__continue;
++                    }
++                    v_string_length += 4u;
++                    continue;
++                  }
++                }
++              }
++              if (v_string_length > 0u) {
++                *iop_a_dst++ = wuffs_base__make_token(
++                    (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                    (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                    (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                v_string_length = 0u;
++                if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++                  goto label__string_loop_outer__continue;
++                }
++              }
++              if (((uint8_t)(v_char & 128u)) != 0u) {
++                if (self->private_impl.f_quirks[0u]) {
++                  *iop_a_dst++ = wuffs_base__make_token(
++                      (((uint64_t)((6291456u | ((uint32_t)(((uint8_t)(v_char & 127u))))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                  iop_a_src += 1u;
++                  goto label__string_loop_outer__continue;
++                }
++                if (v_char == 138u) {
++                  status = wuffs_base__make_status(wuffs_json__error__bad_new_line_in_a_string);
++                  goto exit;
++                }
++                status = wuffs_base__make_status(wuffs_json__error__bad_c0_control_code);
++                goto exit;
++              }
++              if (self->private_impl.f_quirks[20u]) {
++                *iop_a_dst++ = wuffs_base__make_token(
++                    (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                    (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                    (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++                iop_a_src += 1u;
++                goto label__string_loop_outer__continue;
++              }
++              status = wuffs_base__make_status(wuffs_json__error__bad_utf_8);
++              goto exit;
++            }
++          }
++          label__string_loop_outer__break:;
++          while (true) {
++            if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++              if (a_src && a_src->meta.closed) {
++                status = wuffs_base__make_status(wuffs_json__error__bad_input);
++                goto exit;
++              }
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(14);
++              continue;
++            }
++            if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(15);
++              continue;
++            }
++            iop_a_src += 1u;
++            *iop_a_dst++ = wuffs_base__make_token(
++                (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++            break;
++          }
++          if (0u == (v_expect & (((uint32_t)(1u)) << 4u))) {
++            v_expect = 4104u;
++            goto label__outer__continue;
++          }
++          break;
++        } else if (v_class == 2u) {
++          iop_a_src += 1u;
++          *iop_a_dst++ = wuffs_base__make_token(
++              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++          if (0u == (v_expect & (((uint32_t)(1u)) << 8u))) {
++            if (self->private_impl.f_quirks[13u]) {
++              v_expect = 4162u;
++            } else {
++              v_expect = 4098u;
++            }
++          } else {
++            if (self->private_impl.f_quirks[13u]) {
++              v_expect = 8114u;
++            } else {
++              v_expect = 7858u;
++            }
++          }
++          goto label__outer__continue;
++        } else if (v_class == 3u) {
++          iop_a_src += 1u;
++          *iop_a_dst++ = wuffs_base__make_token(
++              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++          v_expect = 7858u;
++          goto label__outer__continue;
++        } else if (v_class == 4u) {
++          while (true) {
++            if (a_src) {
++              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++            }
++            v_number_length = wuffs_json__decoder__decode_number(self, a_src);
++            if (a_src) {
++              iop_a_src = a_src->data.ptr + a_src->meta.ri;
++            }
++            v_number_status = (v_number_length >> 8u);
++            v_vminor = 10486787u;
++            if ((v_number_length & 128u) != 0u) {
++              v_vminor = 10486785u;
++            }
++            v_number_length = (v_number_length & 127u);
++            if (v_number_status == 0u) {
++              *iop_a_dst++ = wuffs_base__make_token(
++                  (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                  (((uint64_t)(v_number_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++              break;
++            }
++            while (v_number_length > 0u) {
++              v_number_length -= 1u;
++              if (iop_a_src > io1_a_src) {
++                iop_a_src--;
++              } else {
++                status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
++                goto exit;
++              }
++            }
++            if (v_number_status == 1u) {
++              if (self->private_impl.f_quirks[14u]) {
++                if (a_dst) {
++                  a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++                }
++                if (a_src) {
++                  a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++                }
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
++                status = wuffs_json__decoder__decode_inf_nan(self, a_dst, a_src);
++                if (a_dst) {
++                  iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
++                }
++                if (a_src) {
++                  iop_a_src = a_src->data.ptr + a_src->meta.ri;
++                }
++                if (status.repr) {
++                  goto suspend;
++                }
++                break;
++              }
++              status = wuffs_base__make_status(wuffs_json__error__bad_input);
++              goto exit;
++            } else if (v_number_status == 2u) {
++              status = wuffs_base__make_status(wuffs_json__error__unsupported_number_length);
++              goto exit;
++            } else {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(17);
++              while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(18);
++              }
++            }
++          }
++          break;
++        } else if (v_class == 5u) {
++          v_vminor = 2113553u;
++          if (v_depth == 0u) {
++          } else if (0u != (v_expect_after_value & (((uint32_t)(1u)) << 6u))) {
++            v_vminor = 2113601u;
++          } else {
++            v_vminor = 2113569u;
++          }
++          if (v_depth >= 1024u) {
++            status = wuffs_base__make_status(wuffs_json__error__unsupported_recursion_depth);
++            goto exit;
++          }
++          v_stack_byte = (v_depth / 32u);
++          v_stack_bit = (v_depth & 31u);
++          self->private_data.f_stack[v_stack_byte] |= (((uint32_t)(1u)) << v_stack_bit);
++          v_depth += 1u;
++          iop_a_src += 1u;
++          *iop_a_dst++ = wuffs_base__make_token(
++              (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++          v_expect = 4162u;
++          v_expect_after_value = 4164u;
++          goto label__outer__continue;
++        } else if (v_class == 6u) {
++          iop_a_src += 1u;
++          if (v_depth <= 1u) {
++            *iop_a_dst++ = wuffs_base__make_token(
++                (((uint64_t)(2101314u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++            goto label__outer__break;
++          }
++          v_depth -= 1u;
++          v_stack_byte = ((v_depth - 1u) / 32u);
++          v_stack_bit = ((v_depth - 1u) & 31u);
++          if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
++            *iop_a_dst++ = wuffs_base__make_token(
++                (((uint64_t)(2105410u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++            v_expect = 4356u;
++            v_expect_after_value = 4356u;
++          } else {
++            *iop_a_dst++ = wuffs_base__make_token(
++                (((uint64_t)(2113602u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++            v_expect = 4164u;
++            v_expect_after_value = 4164u;
++          }
++          goto label__outer__continue;
++        } else if (v_class == 7u) {
++          v_vminor = 2105361u;
++          if (v_depth == 0u) {
++          } else if (0u != (v_expect_after_value & (((uint32_t)(1u)) << 6u))) {
++            v_vminor = 2105409u;
++          } else {
++            v_vminor = 2105377u;
++          }
++          if (v_depth >= 1024u) {
++            status = wuffs_base__make_status(wuffs_json__error__unsupported_recursion_depth);
++            goto exit;
++          }
++          v_stack_byte = (v_depth / 32u);
++          v_stack_bit = (v_depth & 31u);
++          self->private_data.f_stack[v_stack_byte] &= (4294967295u ^ (((uint32_t)(1u)) << v_stack_bit));
++          v_depth += 1u;
++          iop_a_src += 1u;
++          *iop_a_dst++ = wuffs_base__make_token(
++              (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++          v_expect = 8114u;
++          v_expect_after_value = 4356u;
++          goto label__outer__continue;
++        } else if (v_class == 8u) {
++          iop_a_src += 1u;
++          if (v_depth <= 1u) {
++            *iop_a_dst++ = wuffs_base__make_token(
++                (((uint64_t)(2101282u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++            goto label__outer__break;
++          }
++          v_depth -= 1u;
++          v_stack_byte = ((v_depth - 1u) / 32u);
++          v_stack_bit = ((v_depth - 1u) & 31u);
++          if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
++            *iop_a_dst++ = wuffs_base__make_token(
++                (((uint64_t)(2105378u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++            v_expect = 4356u;
++            v_expect_after_value = 4356u;
++          } else {
++            *iop_a_dst++ = wuffs_base__make_token(
++                (((uint64_t)(2113570u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++            v_expect = 4164u;
++            v_expect_after_value = 4164u;
++          }
++          goto label__outer__continue;
++        } else if (v_class == 9u) {
++          v_match = wuffs_private_impl__io_reader__match7(iop_a_src, io2_a_src, a_src, 111546413966853u);
++          if (v_match == 0u) {
++            *iop_a_dst++ = wuffs_base__make_token(
++                (((uint64_t)(8388612u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                (((uint64_t)(5u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++            if (((uint64_t)(io2_a_src - iop_a_src)) < 5u) {
++              status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
++              goto exit;
++            }
++            iop_a_src += 5u;
++            break;
++          } else if (v_match == 1u) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(19);
++            goto label__outer__continue;
++          }
++        } else if (v_class == 10u) {
++          v_match = wuffs_private_impl__io_reader__match7(iop_a_src, io2_a_src, a_src, 435762131972u);
++          if (v_match == 0u) {
++            *iop_a_dst++ = wuffs_base__make_token(
++                (((uint64_t)(8388616u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++            if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
++              status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
++              goto exit;
++            }
++            iop_a_src += 4u;
++            break;
++          } else if (v_match == 1u) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(20);
++            goto label__outer__continue;
++          }
++        } else if (v_class == 11u) {
++          v_match = wuffs_private_impl__io_reader__match7(iop_a_src, io2_a_src, a_src, 465676103172u);
++          if (v_match == 0u) {
++            *iop_a_dst++ = wuffs_base__make_token(
++                (((uint64_t)(8388610u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++            if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
++              status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
++              goto exit;
++            }
++            iop_a_src += 4u;
++            break;
++          } else if (v_match == 1u) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(21);
++            goto label__outer__continue;
++          }
++          if (self->private_impl.f_quirks[14u]) {
++            if (a_dst) {
++              a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++            }
++            if (a_src) {
++              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++            }
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22);
++            status = wuffs_json__decoder__decode_inf_nan(self, a_dst, a_src);
++            if (a_dst) {
++              iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
++            }
++            if (a_src) {
++              iop_a_src = a_src->data.ptr + a_src->meta.ri;
++            }
++            if (status.repr) {
++              goto suspend;
++            }
++            break;
++          }
++        } else if (v_class == 12u) {
++          if (self->private_impl.f_quirks[11u] || self->private_impl.f_quirks[12u]) {
++            if (a_dst) {
++              a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++            }
++            if (a_src) {
++              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++            }
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(23);
++            status = wuffs_json__decoder__decode_comment(self, a_dst, a_src);
++            if (a_dst) {
++              iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
++            }
++            if (a_src) {
++              iop_a_src = a_src->data.ptr + a_src->meta.ri;
++            }
++            if (status.repr) {
++              goto suspend;
++            }
++            if (self->private_impl.f_comment_type > 0u) {
++              goto label__outer__continue;
++            }
++          }
++        }
++        status = wuffs_base__make_status(wuffs_json__error__bad_input);
++        goto exit;
++      }
++      if (v_depth == 0u) {
++        break;
++      }
++      v_expect = v_expect_after_value;
++    }
++    label__outer__break:;
++    if (self->private_impl.f_quirks[17u] || self->private_impl.f_quirks[18u]) {
++      if (a_dst) {
++        a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++      }
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(24);
++      status = wuffs_json__decoder__decode_trailer(self, a_dst, a_src);
++      if (a_dst) {
++        iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
++      }
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++    }
++    self->private_impl.f_end_of_data = true;
++
++    ok:
++    self->private_impl.p_decode_tokens = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_tokens = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
++  self->private_data.s_decode_tokens.v_depth = v_depth;
++  self->private_data.s_decode_tokens.v_expect = v_expect;
++  self->private_data.s_decode_tokens.v_expect_after_value = v_expect_after_value;
++
++  goto exit;
++  exit:
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++  }
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func json.decoder.decode_number
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint32_t
++wuffs_json__decoder__decode_number(
++    wuffs_json__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  uint8_t v_c8 = 0;
++  uint32_t v_n = 0;
++  uint32_t v_floating_point = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  do {
++    v_n = 0u;
++    if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++      if ( ! (a_src && a_src->meta.closed)) {
++        v_n |= 768u;
++      }
++      break;
++    }
++    v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++    if (v_c8 != 45u) {
++    } else {
++      v_n += 1u;
++      iop_a_src += 1u;
++      if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++        if ( ! (a_src && a_src->meta.closed)) {
++          v_n |= 768u;
++        }
++        v_n |= 256u;
++        break;
++      }
++      v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++    }
++    if (v_c8 == 48u) {
++      v_n += 1u;
++      iop_a_src += 1u;
++    } else {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      v_n = wuffs_json__decoder__decode_digits(self, a_src, v_n);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (v_n > 99u) {
++        break;
++      }
++    }
++    if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++      if ( ! (a_src && a_src->meta.closed)) {
++        v_n |= 768u;
++      }
++      break;
++    }
++    v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++    if (v_c8 != 46u) {
++    } else {
++      if (v_n >= 99u) {
++        v_n |= 512u;
++        break;
++      }
++      v_n += 1u;
++      iop_a_src += 1u;
++      v_floating_point = 128u;
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      v_n = wuffs_json__decoder__decode_digits(self, a_src, v_n);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (v_n > 99u) {
++        break;
++      }
++      if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++        if ( ! (a_src && a_src->meta.closed)) {
++          v_n |= 768u;
++        }
++        break;
++      }
++      v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++    }
++    if ((v_c8 != 69u) && (v_c8 != 101u)) {
++      break;
++    }
++    if (v_n >= 99u) {
++      v_n |= 512u;
++      break;
++    }
++    v_n += 1u;
++    iop_a_src += 1u;
++    v_floating_point = 128u;
++    if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++      if ( ! (a_src && a_src->meta.closed)) {
++        v_n |= 768u;
++      }
++      v_n |= 256u;
++      break;
++    }
++    v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++    if ((v_c8 != 43u) && (v_c8 != 45u)) {
++    } else {
++      if (v_n >= 99u) {
++        v_n |= 512u;
++        break;
++      }
++      v_n += 1u;
++      iop_a_src += 1u;
++    }
++    if (a_src) {
++      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++    }
++    v_n = wuffs_json__decoder__decode_digits(self, a_src, v_n);
++    if (a_src) {
++      iop_a_src = a_src->data.ptr + a_src->meta.ri;
++    }
++  } while (0);
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++  return (v_n | v_floating_point);
++}
++
++// -------- func json.decoder.decode_digits
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint32_t
++wuffs_json__decoder__decode_digits(
++    wuffs_json__decoder* self,
++    wuffs_base__io_buffer* a_src,
++    uint32_t a_n) {
++  uint8_t v_c8 = 0;
++  uint32_t v_n = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  v_n = a_n;
++  while (true) {
++    if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++      if ( ! (a_src && a_src->meta.closed)) {
++        v_n |= 768u;
++      }
++      break;
++    }
++    v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++    if (0u == WUFFS_JSON__LUT_DECIMAL_DIGITS[v_c8]) {
++      break;
++    }
++    if (v_n >= 99u) {
++      v_n |= 512u;
++      break;
++    }
++    v_n += 1u;
++    iop_a_src += 1u;
++  }
++  if (v_n == a_n) {
++    v_n |= 256u;
++  }
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++  return v_n;
++}
++
++// -------- func json.decoder.decode_leading
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_json__decoder__decode_leading(
++    wuffs_json__decoder* self,
++    wuffs_base__token_buffer* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_c8 = 0;
++  uint32_t v_u = 0;
++
++  wuffs_base__token* iop_a_dst = NULL;
++  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
++    }
++  }
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_leading;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    self->private_impl.f_allow_leading_ars = self->private_impl.f_quirks[15u];
++    self->private_impl.f_allow_leading_ubom = self->private_impl.f_quirks[16u];
++    while (self->private_impl.f_allow_leading_ars || self->private_impl.f_allow_leading_ubom) {
++      if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++        continue;
++      }
++      if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++        if (a_src && a_src->meta.closed) {
++          break;
++        }
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
++        continue;
++      }
++      v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++      if ((v_c8 == 30u) && self->private_impl.f_allow_leading_ars) {
++        self->private_impl.f_allow_leading_ars = false;
++        iop_a_src += 1u;
++        *iop_a_dst++ = wuffs_base__make_token(
++            (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++            (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++        continue;
++      } else if ((v_c8 == 239u) && self->private_impl.f_allow_leading_ubom) {
++        if (((uint64_t)(io2_a_src - iop_a_src)) < 3u) {
++          if (a_src && a_src->meta.closed) {
++            break;
++          }
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
++          continue;
++        }
++        v_u = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
++        if (v_u == 12565487u) {
++          self->private_impl.f_allow_leading_ubom = false;
++          iop_a_src += 3u;
++          *iop_a_dst++ = wuffs_base__make_token(
++              (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++              (((uint64_t)(3u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++          continue;
++        }
++      }
++      break;
++    }
++
++    ok:
++    self->private_impl.p_decode_leading = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_leading = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++  }
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func json.decoder.decode_comment
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_json__decoder__decode_comment(
++    wuffs_json__decoder* self,
++    wuffs_base__token_buffer* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_c8 = 0;
++  uint16_t v_c16 = 0;
++  uint32_t v_length = 0;
++
++  wuffs_base__token* iop_a_dst = NULL;
++  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
++    }
++  }
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_comment;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    self->private_impl.f_comment_type = 0u;
++    while ((((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) || (((uint64_t)(io2_a_src - iop_a_src)) <= 1u)) {
++      if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++        continue;
++      }
++      if (a_src && a_src->meta.closed) {
++        status = wuffs_base__make_status(NULL);
++        goto ok;
++      }
++      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
++    }
++    v_c16 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
++    if ((v_c16 == 10799u) && self->private_impl.f_quirks[11u]) {
++      iop_a_src += 2u;
++      v_length = 2u;
++      while (true) {
++        if (((uint64_t)(io2_a_src - iop_a_src)) <= 1u) {
++          if (v_length > 0u) {
++            *iop_a_dst++ = wuffs_base__make_token(
++                (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++          }
++          if (a_src && a_src->meta.closed) {
++            status = wuffs_base__make_status(wuffs_json__error__bad_input);
++            goto exit;
++          }
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
++          while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
++          }
++          v_length = 0u;
++          continue;
++        }
++        v_c16 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
++        if (v_c16 == 12074u) {
++          iop_a_src += 2u;
++          *iop_a_dst++ = wuffs_base__make_token(
++              (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++              (((uint64_t)((v_length + 2u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++          self->private_impl.f_comment_type = 1u;
++          status = wuffs_base__make_status(NULL);
++          goto ok;
++        }
++        iop_a_src += 1u;
++        if (v_length >= 65533u) {
++          *iop_a_dst++ = wuffs_base__make_token(
++              (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++              (((uint64_t)((v_length + 1u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++          while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
++          }
++          v_length = 0u;
++          continue;
++        }
++        v_length += 1u;
++      }
++    } else if ((v_c16 == 12079u) && self->private_impl.f_quirks[12u]) {
++      iop_a_src += 2u;
++      v_length = 2u;
++      while (true) {
++        if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++          if (a_src && a_src->meta.closed) {
++            *iop_a_dst++ = wuffs_base__make_token(
++                (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++            self->private_impl.f_comment_type = 2u;
++            status = wuffs_base__make_status(NULL);
++            goto ok;
++          } else if (v_length > 0u) {
++            *iop_a_dst++ = wuffs_base__make_token(
++                (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++                (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++          }
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
++          while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
++          }
++          v_length = 0u;
++          continue;
++        }
++        v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++        if (v_c8 == 10u) {
++          *iop_a_dst++ = wuffs_base__make_token(
++              (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++              (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++          self->private_impl.f_comment_type = 2u;
++          status = wuffs_base__make_status(NULL);
++          goto ok;
++        }
++        iop_a_src += 1u;
++        if (v_length >= 65533u) {
++          *iop_a_dst++ = wuffs_base__make_token(
++              (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
++              (((uint64_t)((v_length + 1u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++          while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
++          }
++          v_length = 0u;
++          continue;
++        }
++        v_length += 1u;
++      }
++    }
++
++    ok:
++    self->private_impl.p_decode_comment = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_comment = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++  }
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func json.decoder.decode_inf_nan
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_json__decoder__decode_inf_nan(
++    wuffs_json__decoder* self,
++    wuffs_base__token_buffer* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint32_t v_c32 = 0;
++  uint32_t v_neg = 0;
++
++  wuffs_base__token* iop_a_dst = NULL;
++  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
++    }
++  }
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_inf_nan;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++        continue;
++      }
++      if (((uint64_t)(io2_a_src - iop_a_src)) <= 2u) {
++        if (a_src && a_src->meta.closed) {
++          status = wuffs_base__make_status(wuffs_json__error__bad_input);
++          goto exit;
++        }
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
++        continue;
++      }
++      v_c32 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
++      if ((v_c32 | 2105376u) == 6712937u) {
++        if (((uint64_t)(io2_a_src - iop_a_src)) > 7u) {
++          if ((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) | 2314885530818453536u) == 8751735898823356009u) {
++            *iop_a_dst++ = wuffs_base__make_token(
++                (((uint64_t)(10485792u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                (((uint64_t)(8u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++            iop_a_src += 8u;
++            status = wuffs_base__make_status(NULL);
++            goto ok;
++          }
++        } else if ( ! (a_src && a_src->meta.closed)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
++          continue;
++        }
++        *iop_a_dst++ = wuffs_base__make_token(
++            (((uint64_t)(10485792u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++            (((uint64_t)(3u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++        iop_a_src += 3u;
++        status = wuffs_base__make_status(NULL);
++        goto ok;
++      } else if ((v_c32 | 2105376u) == 7233902u) {
++        *iop_a_dst++ = wuffs_base__make_token(
++            (((uint64_t)(10485888u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++            (((uint64_t)(3u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++        iop_a_src += 3u;
++        status = wuffs_base__make_status(NULL);
++        goto ok;
++      } else if ((v_c32 & 255u) == 43u) {
++        v_neg = 0u;
++      } else if ((v_c32 & 255u) == 45u) {
++        v_neg = 1u;
++      } else {
++        status = wuffs_base__make_status(wuffs_json__error__bad_input);
++        goto exit;
++      }
++      if (((uint64_t)(io2_a_src - iop_a_src)) <= 3u) {
++        if (a_src && a_src->meta.closed) {
++          status = wuffs_base__make_status(wuffs_json__error__bad_input);
++          goto exit;
++        }
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
++        continue;
++      }
++      v_c32 = (wuffs_base__peek_u32le__no_bounds_check(iop_a_src) >> 8u);
++      if ((v_c32 | 2105376u) == 6712937u) {
++        if (((uint64_t)(io2_a_src - iop_a_src)) > 8u) {
++          if ((wuffs_base__peek_u64le__no_bounds_check(iop_a_src + 1u) | 2314885530818453536u) == 8751735898823356009u) {
++            *iop_a_dst++ = wuffs_base__make_token(
++                (((uint64_t)((10485760u | (((uint32_t)(32u)) >> v_neg)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                (((uint64_t)(9u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++            iop_a_src += 9u;
++            status = wuffs_base__make_status(NULL);
++            goto ok;
++          }
++        } else if ( ! (a_src && a_src->meta.closed)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
++          continue;
++        }
++        *iop_a_dst++ = wuffs_base__make_token(
++            (((uint64_t)((10485760u | (((uint32_t)(32u)) >> v_neg)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++            (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++        iop_a_src += 4u;
++        status = wuffs_base__make_status(NULL);
++        goto ok;
++      } else if ((v_c32 | 2105376u) == 7233902u) {
++        *iop_a_dst++ = wuffs_base__make_token(
++            (((uint64_t)((10485760u | (((uint32_t)(128u)) >> v_neg)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++            (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++        iop_a_src += 4u;
++        status = wuffs_base__make_status(NULL);
++        goto ok;
++      }
++      status = wuffs_base__make_status(wuffs_json__error__bad_input);
++      goto exit;
++    }
++
++    ok:
++    self->private_impl.p_decode_inf_nan = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_inf_nan = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++  }
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func json.decoder.decode_trailer
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_json__decoder__decode_trailer(
++    wuffs_json__decoder* self,
++    wuffs_base__token_buffer* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_c8 = 0;
++  uint32_t v_whitespace_length = 0;
++
++  wuffs_base__token* iop_a_dst = NULL;
++  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
++    }
++  }
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_trailer;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_quirks[18u]) {
++      self->private_impl.f_trailer_stop = 10u;
++    } else {
++      self->private_impl.f_trailer_stop = 0u;
++    }
++    label__outer__continue:;
++    while (true) {
++      if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++        continue;
++      }
++      v_whitespace_length = 0u;
++      while (true) {
++        if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++          if (v_whitespace_length > 0u) {
++            *iop_a_dst++ = wuffs_base__make_token(
++                (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++          }
++          if (a_src && a_src->meta.closed) {
++            goto label__outer__break;
++          }
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
++          goto label__outer__continue;
++        }
++        v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++        if (WUFFS_JSON__LUT_CLASSES[v_c8] != 0u) {
++          if (v_whitespace_length > 0u) {
++            *iop_a_dst++ = wuffs_base__make_token(
++                (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++                (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++          }
++          if (self->private_impl.f_trailer_stop > 0u) {
++            status = wuffs_base__make_status(wuffs_json__error__bad_input);
++            goto exit;
++          }
++          if (a_dst) {
++            a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++          }
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++          status = wuffs_json__decoder__decode_comment(self, a_dst, a_src);
++          if (a_dst) {
++            iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
++          }
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++          if (status.repr) {
++            goto suspend;
++          }
++          if (self->private_impl.f_comment_type > 0u) {
++            goto label__outer__continue;
++          }
++          status = wuffs_base__make_status(NULL);
++          goto ok;
++        }
++        iop_a_src += 1u;
++        if ((v_whitespace_length >= 65534u) || (v_c8 == self->private_impl.f_trailer_stop)) {
++          *iop_a_dst++ = wuffs_base__make_token(
++              (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
++              (((uint64_t)((v_whitespace_length + 1u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++          if (v_c8 == self->private_impl.f_trailer_stop) {
++            status = wuffs_base__make_status(NULL);
++            goto ok;
++          }
++          goto label__outer__continue;
++        }
++        v_whitespace_length += 1u;
++      }
++    }
++    label__outer__break:;
++
++    ok:
++    self->private_impl.p_decode_trailer = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_trailer = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++  }
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JSON)
++
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZMA)
++
++// ---------------- Status Codes Implementations
++
++const char wuffs_lzma__error__bad_lzma2_header[] = "#lzma: bad LZMA2 header";
++const char wuffs_lzma__error__bad_bitstream_trailer[] = "#lzma: bad bitstream trailer";
++const char wuffs_lzma__error__bad_code[] = "#lzma: bad code";
++const char wuffs_lzma__error__bad_decoded_length[] = "#lzma: bad decoded length";
++const char wuffs_lzma__error__bad_distance[] = "#lzma: bad distance";
++const char wuffs_lzma__error__bad_header[] = "#lzma: bad header";
++const char wuffs_lzma__error__truncated_input[] = "#lzma: truncated input";
++const char wuffs_lzma__error__unsupported_decoded_length[] = "#lzma: unsupported decoded length";
++const char wuffs_lzma__error__unsupported_properties[] = "#lzma: unsupported properties";
++const char wuffs_lzma__error__internal_error_inconsistent_i_o[] = "#lzma: internal error: inconsistent I/O";
++const char wuffs_lzma__error__internal_error_inconsistent_dictionary_state[] = "#lzma: internal error: inconsistent dictionary state";
++
++// ---------------- Private Consts
++
++static const uint8_t
++WUFFS_LZMA__STATE_TRANSITION_LITERAL[12] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 0u, 0u, 0u, 1u, 2u, 3u, 4u,
++  5u, 6u, 4u, 5u,
++};
++
++static const uint8_t
++WUFFS_LZMA__STATE_TRANSITION_MATCH[12] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  7u, 7u, 7u, 7u, 7u, 7u, 7u, 10u,
++  10u, 10u, 10u, 10u,
++};
++
++static const uint8_t
++WUFFS_LZMA__STATE_TRANSITION_LONGREP[12] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  8u, 8u, 8u, 8u, 8u, 8u, 8u, 11u,
++  11u, 11u, 11u, 11u,
++};
++
++static const uint8_t
++WUFFS_LZMA__STATE_TRANSITION_SHORTREP[12] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  9u, 9u, 9u, 9u, 9u, 9u, 9u, 11u,
++  11u, 11u, 11u, 11u,
++};
++
++static const uint8_t
++WUFFS_LZMA__CLAMP_NO_MORE_THAN_3[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 1u, 2u, 3u, 3u, 3u, 3u, 3u,
++};
++
++#define WUFFS_LZMA__QUIRKS_BASE 1348001792u
++
++// ---------------- Private Initializer Prototypes
++
++// ---------------- Private Function Prototypes
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_lzma__decoder__decode_bitstream_fast(
++    wuffs_lzma__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_lzma__decoder__decode_bitstream_slow(
++    wuffs_lzma__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_lzma__decoder__add_history(
++    wuffs_lzma__decoder* self,
++    wuffs_base__slice_u8 a_hist,
++    wuffs_base__slice_u8 a_workbuf);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_lzma__decoder__do_transform_io(
++    wuffs_lzma__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_lzma__decoder__decode_bitstream(
++    wuffs_lzma__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_lzma__decoder__update_stashed_bytes(
++    wuffs_lzma__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__slice_u8 a_workbuf);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_lzma__decoder__decode_optional_end_of_stream(
++    wuffs_lzma__decoder* self,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_lzma__decoder__initialize_dict(
++    wuffs_lzma__decoder* self);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_lzma__decoder__initialize_probs(
++    wuffs_lzma__decoder* self);
++
++// ---------------- VTables
++
++const wuffs_base__io_transformer__func_ptrs
++wuffs_lzma__decoder__func_ptrs_for__wuffs_base__io_transformer = {
++  (wuffs_base__optional_u63(*)(const void*))(&wuffs_lzma__decoder__dst_history_retain_length),
++  (uint64_t(*)(const void*,
++      uint32_t))(&wuffs_lzma__decoder__get_quirk),
++  (wuffs_base__status(*)(void*,
++      uint32_t,
++      uint64_t))(&wuffs_lzma__decoder__set_quirk),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__io_buffer*,
++      wuffs_base__io_buffer*,
++      wuffs_base__slice_u8))(&wuffs_lzma__decoder__transform_io),
++  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_lzma__decoder__workbuf_len),
++};
++
++// ---------------- Initializer Implementations
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_lzma__decoder__initialize(
++    wuffs_lzma__decoder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options){
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (sizeof(*self) != sizeof_star_self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  }
++  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
++      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++  }
++
++  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
++    // The whole point of this if-check is to detect an uninitialized *self.
++    // We disable the warning on GCC. Clang-5.0 does not have this warning.
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++#endif
++    if (self->private_impl.magic != 0) {
++      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++    }
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++  } else {
++    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
++      memset(self, 0, sizeof(*self));
++      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
++    } else {
++      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++    }
++  }
++
++  self->private_impl.magic = WUFFS_BASE__MAGIC;
++  self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
++      wuffs_base__io_transformer__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
++      (const void*)(&wuffs_lzma__decoder__func_ptrs_for__wuffs_base__io_transformer);
++  return wuffs_base__make_status(NULL);
++}
++
++wuffs_lzma__decoder*
++wuffs_lzma__decoder__alloc(void) {
++  wuffs_lzma__decoder* x =
++      (wuffs_lzma__decoder*)(calloc(1, sizeof(wuffs_lzma__decoder)));
++  if (!x) {
++    return NULL;
++  }
++  if (wuffs_lzma__decoder__initialize(
++      x, sizeof(wuffs_lzma__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++    free(x);
++    return NULL;
++  }
++  return x;
++}
++
++size_t
++sizeof__wuffs_lzma__decoder(void) {
++  return sizeof(wuffs_lzma__decoder);
++}
++
++// ---------------- Function Implementations
++
++// -------- func lzma.decoder.decode_bitstream_fast
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_lzma__decoder__decode_bitstream_fast(
++    wuffs_lzma__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_c8 = 0;
++  uint32_t v_bits = 0;
++  uint32_t v_range = 0;
++  uint32_t v_state = 0;
++  uint32_t v_rep0 = 0;
++  uint32_t v_rep1 = 0;
++  uint32_t v_rep2 = 0;
++  uint32_t v_rep3 = 0;
++  uint32_t v_reptmp = 0;
++  uint32_t v_rep = 0;
++  uint64_t v_pos = 0;
++  uint64_t v_pos_end = 0;
++  uint32_t v_lc = 0;
++  uint64_t v_lp_mask = 0;
++  uint64_t v_pb_mask = 0;
++  uint32_t v_prob = 0;
++  uint32_t v_threshold = 0;
++  uint32_t v_tree_node = 0;
++  uint8_t v_prev_byte = 0;
++  uint32_t v_match_byte = 0;
++  uint32_t v_match_cusp = 0;
++  uint32_t v_len_state = 0;
++  uint32_t v_slot = 0;
++  uint32_t v_len = 0;
++  uint32_t v_lanl_offset = 0;
++  uint32_t v_lanl_old_offset = 0;
++  uint32_t v_lanl_index = 0;
++  uint32_t v_num_extra_bits = 0;
++  uint32_t v_dist_extra_bits = 0;
++  uint32_t v_high_bit_was_on = 0;
++  uint32_t v_i = 0;
++  uint32_t v_index_ao00 = 0;
++  uint32_t v_index_ao41 = 0;
++  uint32_t v_index_lit = 0;
++  uint32_t v_index_len = 0;
++  uint32_t v_index_small_dist_base = 0;
++  uint32_t v_index_small_dist_extra = 0;
++  uint32_t v_index_small_dist = 0;
++  uint32_t v_index_large_dist = 0;
++  uint32_t v_dist = 0;
++  uint32_t v_adj_dist = 0;
++  uint64_t v_wb_index = 0;
++
++  uint8_t* iop_a_dst = NULL;
++  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
++    }
++  }
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  v_prev_byte = self->private_impl.f_stashed_bytes[0u];
++  v_match_byte = ((uint32_t)(self->private_impl.f_stashed_bytes[1u]));
++  v_bits = self->private_impl.f_stashed_bits;
++  v_range = self->private_impl.f_stashed_range;
++  v_state = self->private_impl.f_stashed_state;
++  v_rep0 = self->private_impl.f_stashed_rep0;
++  v_rep1 = self->private_impl.f_stashed_rep1;
++  v_rep2 = self->private_impl.f_stashed_rep2;
++  v_rep3 = self->private_impl.f_stashed_rep3;
++  v_pos = self->private_impl.f_stashed_pos;
++  v_pos_end = self->private_impl.f_stashed_pos_end;
++  v_lc = self->private_impl.f_lc;
++  v_lp_mask = ((((uint64_t)(1u)) << self->private_impl.f_lp) - 1u);
++  v_pb_mask = ((((uint64_t)(1u)) << self->private_impl.f_pb) - 1u);
++  while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 282u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 48u)) {
++    if (v_pos >= v_pos_end) {
++      self->private_impl.f_end_of_chunk = true;
++      break;
++    }
++    v_index_ao00 = ((v_state << 4u) | ((uint32_t)((v_pos & v_pb_mask))));
++    v_prob = ((uint32_t)(self->private_data.f_probs_ao00[v_index_ao00]));
++    v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++    if (v_bits < v_threshold) {
++      v_range = v_threshold;
++      v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++      self->private_data.f_probs_ao00[v_index_ao00] = ((uint16_t)(v_prob));
++      if ((v_range >> 24u) == 0u) {
++        v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++        iop_a_src += 1u;
++        v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++        v_range <<= 8u;
++      }
++      v_index_lit = (15u & ((((uint32_t)((v_pos & v_lp_mask))) << v_lc) | (((uint32_t)(v_prev_byte)) >> (8u - v_lc))));
++      v_lanl_offset = 0u;
++      if (v_state >= 7u) {
++        v_lanl_offset = 256u;
++      }
++      v_tree_node = 1u;
++      while (v_tree_node < 256u) {
++        v_match_byte <<= 1u;
++        v_lanl_old_offset = v_lanl_offset;
++        v_lanl_offset &= v_match_byte;
++        v_lanl_index = (v_lanl_offset + v_lanl_old_offset + v_tree_node);
++        v_prob = ((uint32_t)(self->private_data.f_probs_lit[v_index_lit][v_lanl_index]));
++        v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++        if (v_bits < v_threshold) {
++          v_lanl_offset = ((v_lanl_offset ^ v_lanl_old_offset) & 256u);
++          v_range = v_threshold;
++          v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++          self->private_data.f_probs_lit[v_index_lit][v_lanl_index] = ((uint16_t)(v_prob));
++          v_tree_node = (v_tree_node << 1u);
++        } else {
++          v_bits -= v_threshold;
++          v_range -= v_threshold;
++          v_prob -= (v_prob >> 5u);
++          self->private_data.f_probs_lit[v_index_lit][v_lanl_index] = ((uint16_t)(v_prob));
++          v_tree_node = ((v_tree_node << 1u) | 1u);
++        }
++        if ((v_range >> 24u) == 0u) {
++          if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++            status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
++            goto exit;
++          }
++          v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++          iop_a_src += 1u;
++          v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++          v_range <<= 8u;
++        }
++      }
++      v_prev_byte = ((uint8_t)(v_tree_node));
++      (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_prev_byte), iop_a_dst += 1);
++      v_pos += 1u;
++      v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_LITERAL[v_state]));
++      continue;
++    }
++    v_bits -= v_threshold;
++    v_range -= v_threshold;
++    v_prob -= (v_prob >> 5u);
++    self->private_data.f_probs_ao00[v_index_ao00] = ((uint16_t)(v_prob));
++    if ((v_range >> 24u) == 0u) {
++      v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++      iop_a_src += 1u;
++      v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++      v_range <<= 8u;
++    } else {
++    }
++    do {
++      v_prob = ((uint32_t)(self->private_data.f_probs_ao20[v_state]));
++      v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++      if (v_bits < v_threshold) {
++        v_range = v_threshold;
++        v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++        self->private_data.f_probs_ao20[v_state] = ((uint16_t)(v_prob));
++        if ((v_range >> 24u) == 0u) {
++          v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++          iop_a_src += 1u;
++          v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++          v_range <<= 8u;
++        } else {
++        }
++        do {
++          v_prob = ((uint32_t)(self->private_data.f_probs_match_len_low[0u][0u]));
++          v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++          if (v_bits < v_threshold) {
++            v_range = v_threshold;
++            v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++            self->private_data.f_probs_match_len_low[0u][0u] = ((uint16_t)(v_prob));
++            if ((v_range >> 24u) == 0u) {
++              v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++              iop_a_src += 1u;
++              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++              v_range <<= 8u;
++            }
++            v_index_len = ((uint32_t)((v_pos & v_pb_mask)));
++            v_tree_node = 1u;
++            while (v_tree_node < 8u) {
++              v_prob = ((uint32_t)(self->private_data.f_probs_match_len_low[v_index_len][v_tree_node]));
++              v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++              if (v_bits < v_threshold) {
++                v_range = v_threshold;
++                v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++                self->private_data.f_probs_match_len_low[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
++                v_tree_node = (v_tree_node << 1u);
++              } else {
++                v_bits -= v_threshold;
++                v_range -= v_threshold;
++                v_prob -= (v_prob >> 5u);
++                self->private_data.f_probs_match_len_low[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
++                v_tree_node = ((v_tree_node << 1u) | 1u);
++              }
++              if ((v_range >> 24u) == 0u) {
++                if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++                  status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
++                  goto exit;
++                }
++                v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++                iop_a_src += 1u;
++                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++                v_range <<= 8u;
++              }
++            }
++            v_len_state = ((uint32_t)(WUFFS_LZMA__CLAMP_NO_MORE_THAN_3[(v_tree_node & 7u)]));
++            v_len = ((v_tree_node & 7u) + 2u);
++            break;
++          }
++          v_bits -= v_threshold;
++          v_range -= v_threshold;
++          v_prob -= (v_prob >> 5u);
++          self->private_data.f_probs_match_len_low[0u][0u] = ((uint16_t)(v_prob));
++          if ((v_range >> 24u) == 0u) {
++            if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++              status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
++              goto exit;
++            }
++            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++            iop_a_src += 1u;
++            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++            v_range <<= 8u;
++          }
++          v_prob = ((uint32_t)(self->private_data.f_probs_match_len_mid[0u][0u]));
++          v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++          if (v_bits < v_threshold) {
++            v_range = v_threshold;
++            v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++            self->private_data.f_probs_match_len_mid[0u][0u] = ((uint16_t)(v_prob));
++            if ((v_range >> 24u) == 0u) {
++              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++                status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
++                goto exit;
++              }
++              v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++              iop_a_src += 1u;
++              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++              v_range <<= 8u;
++            }
++            v_index_len = ((uint32_t)((v_pos & v_pb_mask)));
++            v_tree_node = 1u;
++            while (v_tree_node < 8u) {
++              v_prob = ((uint32_t)(self->private_data.f_probs_match_len_mid[v_index_len][v_tree_node]));
++              v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++              if (v_bits < v_threshold) {
++                v_range = v_threshold;
++                v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++                self->private_data.f_probs_match_len_mid[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
++                v_tree_node = (v_tree_node << 1u);
++              } else {
++                v_bits -= v_threshold;
++                v_range -= v_threshold;
++                v_prob -= (v_prob >> 5u);
++                self->private_data.f_probs_match_len_mid[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
++                v_tree_node = ((v_tree_node << 1u) | 1u);
++              }
++              if ((v_range >> 24u) == 0u) {
++                if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++                  status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
++                  goto exit;
++                }
++                v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++                iop_a_src += 1u;
++                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++                v_range <<= 8u;
++              }
++            }
++            v_len = ((v_tree_node & 7u) + 10u);
++            v_len_state = 3u;
++            break;
++          }
++          v_bits -= v_threshold;
++          v_range -= v_threshold;
++          v_prob -= (v_prob >> 5u);
++          self->private_data.f_probs_match_len_mid[0u][0u] = ((uint16_t)(v_prob));
++          if ((v_range >> 24u) == 0u) {
++            if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++              status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
++              goto exit;
++            }
++            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++            iop_a_src += 1u;
++            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++            v_range <<= 8u;
++          }
++          v_tree_node = 1u;
++          while (v_tree_node < 256u) {
++            v_prob = ((uint32_t)(self->private_data.f_probs_match_len_high[0u][v_tree_node]));
++            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++            if (v_bits < v_threshold) {
++              v_range = v_threshold;
++              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++              self->private_data.f_probs_match_len_high[0u][v_tree_node] = ((uint16_t)(v_prob));
++              v_tree_node = (v_tree_node << 1u);
++            } else {
++              v_bits -= v_threshold;
++              v_range -= v_threshold;
++              v_prob -= (v_prob >> 5u);
++              self->private_data.f_probs_match_len_high[0u][v_tree_node] = ((uint16_t)(v_prob));
++              v_tree_node = ((v_tree_node << 1u) | 1u);
++            }
++            if ((v_range >> 24u) == 0u) {
++              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++                status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
++                goto exit;
++              }
++              v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++              iop_a_src += 1u;
++              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++              v_range <<= 8u;
++            }
++          }
++          v_len = ((v_tree_node & 255u) + 18u);
++          v_len_state = 3u;
++        } while (0);
++        v_slot = 1u;
++        while (v_slot < 64u) {
++          v_prob = ((uint32_t)(self->private_data.f_probs_slot[v_len_state][v_slot]));
++          v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++          if (v_bits < v_threshold) {
++            v_range = v_threshold;
++            v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++            self->private_data.f_probs_slot[v_len_state][v_slot] = ((uint16_t)(v_prob));
++            v_slot = (v_slot << 1u);
++          } else {
++            v_bits -= v_threshold;
++            v_range -= v_threshold;
++            v_prob -= (v_prob >> 5u);
++            self->private_data.f_probs_slot[v_len_state][v_slot] = ((uint16_t)(v_prob));
++            v_slot = ((v_slot << 1u) | 1u);
++          }
++          if ((v_range >> 24u) == 0u) {
++            if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++              status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
++              goto exit;
++            }
++            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++            iop_a_src += 1u;
++            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++            v_range <<= 8u;
++          }
++        }
++        v_slot &= 63u;
++        v_rep = v_slot;
++        if (v_slot < 4u) {
++        } else if (v_slot < 14u) {
++          v_num_extra_bits = ((v_slot >> 1u) - 1u);
++          v_rep = ((2u | (v_slot & 1u)) << v_num_extra_bits);
++          v_index_small_dist_base = ((uint32_t)(v_rep - v_slot));
++          v_index_small_dist_extra = 1u;
++          v_dist_extra_bits = 0u;
++          v_i = 0u;
++          while (v_i < v_num_extra_bits) {
++            v_index_small_dist = (((uint32_t)(v_index_small_dist_base + v_index_small_dist_extra)) & 127u);
++            v_prob = ((uint32_t)(self->private_data.f_probs_small_dist[v_index_small_dist]));
++            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++            if (v_bits < v_threshold) {
++              v_range = v_threshold;
++              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++              self->private_data.f_probs_small_dist[v_index_small_dist] = ((uint16_t)(v_prob));
++              v_index_small_dist_extra = ((uint32_t)(v_index_small_dist_extra << 1u));
++              v_i += 1u;
++            } else {
++              v_bits -= v_threshold;
++              v_range -= v_threshold;
++              v_prob -= (v_prob >> 5u);
++              self->private_data.f_probs_small_dist[v_index_small_dist] = ((uint16_t)(v_prob));
++              v_index_small_dist_extra = (((uint32_t)(v_index_small_dist_extra << 1u)) | 1u);
++              v_dist_extra_bits |= (((uint32_t)(1u)) << v_i);
++              v_i += 1u;
++            }
++            if ((v_range >> 24u) == 0u) {
++              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++                status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
++                goto exit;
++              }
++              v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++              iop_a_src += 1u;
++              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++              v_range <<= 8u;
++            }
++          }
++          v_rep += v_dist_extra_bits;
++        } else {
++          v_num_extra_bits = ((v_slot >> 1u) - 1u);
++          v_rep = ((2u | (v_slot & 1u)) << v_num_extra_bits);
++          v_dist_extra_bits = 0u;
++          while (true) {
++            v_range >>= 1u;
++            v_bits -= v_range;
++            v_high_bit_was_on = ((uint32_t)(0u - (v_bits >> 31u)));
++            v_bits += (v_range & v_high_bit_was_on);
++            v_dist_extra_bits = (((uint32_t)(v_dist_extra_bits << 1u)) | (((uint32_t)(v_high_bit_was_on + 1u)) & 1u));
++            if ((v_range >> 24u) == 0u) {
++              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++                status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
++                goto exit;
++              }
++              v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++              iop_a_src += 1u;
++              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++              v_range <<= 8u;
++            }
++            v_num_extra_bits -= 1u;
++            if (v_num_extra_bits <= 4u) {
++              break;
++            }
++          }
++          v_dist_extra_bits <<= 4u;
++          v_index_large_dist = 1u;
++          while (true) {
++            v_prob = ((uint32_t)(self->private_data.f_probs_large_dist[v_index_large_dist]));
++            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++            if (v_bits < v_threshold) {
++              v_range = v_threshold;
++              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++              self->private_data.f_probs_large_dist[v_index_large_dist] = ((uint16_t)(v_prob));
++              v_index_large_dist = (15u & ((uint32_t)(v_index_large_dist << 1u)));
++            } else {
++              v_bits -= v_threshold;
++              v_range -= v_threshold;
++              v_prob -= (v_prob >> 5u);
++              self->private_data.f_probs_large_dist[v_index_large_dist] = ((uint16_t)(v_prob));
++              v_index_large_dist = (15u & (((uint32_t)(v_index_large_dist << 1u)) | 1u));
++              v_dist_extra_bits |= (((uint32_t)(1u)) << (4u - v_num_extra_bits));
++            }
++            if ((v_range >> 24u) == 0u) {
++              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++                status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
++                goto exit;
++              }
++              v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++              iop_a_src += 1u;
++              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++              v_range <<= 8u;
++            }
++            v_num_extra_bits -= 1u;
++            if (v_num_extra_bits <= 0u) {
++              break;
++            }
++          }
++          v_rep += v_dist_extra_bits;
++        }
++        if (v_rep >= 4294967295u) {
++          self->private_impl.f_end_of_chunk = true;
++          goto label__outer__break;
++        }
++        v_rep3 = v_rep2;
++        v_rep2 = v_rep1;
++        v_rep1 = v_rep0;
++        v_rep0 = v_rep;
++        v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_MATCH[v_state]));
++        break;
++      }
++      v_bits -= v_threshold;
++      v_range -= v_threshold;
++      v_prob -= (v_prob >> 5u);
++      self->private_data.f_probs_ao20[v_state] = ((uint16_t)(v_prob));
++      if ((v_range >> 24u) == 0u) {
++        v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++        iop_a_src += 1u;
++        v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++        v_range <<= 8u;
++      } else {
++      }
++      v_prob = ((uint32_t)(self->private_data.f_probs_ao40[v_state]));
++      v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++      if (v_bits < v_threshold) {
++        v_range = v_threshold;
++        v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++        self->private_data.f_probs_ao40[v_state] = ((uint16_t)(v_prob));
++        if ((v_range >> 24u) == 0u) {
++          v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++          iop_a_src += 1u;
++          v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++          v_range <<= 8u;
++        } else {
++        }
++        v_index_ao41 = ((v_state << 4u) | ((uint32_t)((v_pos & v_pb_mask))));
++        v_prob = ((uint32_t)(self->private_data.f_probs_ao41[v_index_ao41]));
++        v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++        if (v_bits < v_threshold) {
++          v_range = v_threshold;
++          v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++          self->private_data.f_probs_ao41[v_index_ao41] = ((uint16_t)(v_prob));
++          if ((v_range >> 24u) == 0u) {
++            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++            iop_a_src += 1u;
++            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++            v_range <<= 8u;
++          }
++          v_len = 1u;
++          v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_SHORTREP[v_state]));
++          break;
++        }
++        v_bits -= v_threshold;
++        v_range -= v_threshold;
++        v_prob -= (v_prob >> 5u);
++        self->private_data.f_probs_ao41[v_index_ao41] = ((uint16_t)(v_prob));
++        if ((v_range >> 24u) == 0u) {
++          v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++          iop_a_src += 1u;
++          v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++          v_range <<= 8u;
++        }
++      } else {
++        v_bits -= v_threshold;
++        v_range -= v_threshold;
++        v_prob -= (v_prob >> 5u);
++        self->private_data.f_probs_ao40[v_state] = ((uint16_t)(v_prob));
++        if ((v_range >> 24u) == 0u) {
++          v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++          iop_a_src += 1u;
++          v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++          v_range <<= 8u;
++        } else {
++        }
++        v_prob = ((uint32_t)(self->private_data.f_probs_ao60[v_state]));
++        v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++        if (v_bits < v_threshold) {
++          v_range = v_threshold;
++          v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++          self->private_data.f_probs_ao60[v_state] = ((uint16_t)(v_prob));
++          if ((v_range >> 24u) == 0u) {
++            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++            iop_a_src += 1u;
++            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++            v_range <<= 8u;
++          }
++          v_reptmp = v_rep1;
++          v_rep1 = v_rep0;
++          v_rep0 = v_reptmp;
++        } else {
++          v_bits -= v_threshold;
++          v_range -= v_threshold;
++          v_prob -= (v_prob >> 5u);
++          self->private_data.f_probs_ao60[v_state] = ((uint16_t)(v_prob));
++          if ((v_range >> 24u) == 0u) {
++            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++            iop_a_src += 1u;
++            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++            v_range <<= 8u;
++          } else {
++          }
++          v_prob = ((uint32_t)(self->private_data.f_probs_ao63[v_state]));
++          v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++          if (v_bits < v_threshold) {
++            v_range = v_threshold;
++            v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++            self->private_data.f_probs_ao63[v_state] = ((uint16_t)(v_prob));
++            if ((v_range >> 24u) == 0u) {
++              v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++              iop_a_src += 1u;
++              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++              v_range <<= 8u;
++            }
++            v_reptmp = v_rep2;
++            v_rep2 = v_rep1;
++            v_rep1 = v_rep0;
++            v_rep0 = v_reptmp;
++          } else {
++            v_bits -= v_threshold;
++            v_range -= v_threshold;
++            v_prob -= (v_prob >> 5u);
++            self->private_data.f_probs_ao63[v_state] = ((uint16_t)(v_prob));
++            if ((v_range >> 24u) == 0u) {
++              v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++              iop_a_src += 1u;
++              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++              v_range <<= 8u;
++            }
++            v_reptmp = v_rep3;
++            v_rep3 = v_rep2;
++            v_rep2 = v_rep1;
++            v_rep1 = v_rep0;
++            v_rep0 = v_reptmp;
++          }
++        }
++      }
++      do {
++        v_prob = ((uint32_t)(self->private_data.f_probs_longrep_len_low[0u][0u]));
++        v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++        if (v_bits < v_threshold) {
++          v_range = v_threshold;
++          v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++          self->private_data.f_probs_longrep_len_low[0u][0u] = ((uint16_t)(v_prob));
++          if ((v_range >> 24u) == 0u) {
++            if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++              status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
++              goto exit;
++            }
++            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++            iop_a_src += 1u;
++            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++            v_range <<= 8u;
++          }
++          v_index_len = ((uint32_t)((v_pos & v_pb_mask)));
++          v_tree_node = 1u;
++          while (v_tree_node < 8u) {
++            v_prob = ((uint32_t)(self->private_data.f_probs_longrep_len_low[v_index_len][v_tree_node]));
++            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++            if (v_bits < v_threshold) {
++              v_range = v_threshold;
++              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++              self->private_data.f_probs_longrep_len_low[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
++              v_tree_node = (v_tree_node << 1u);
++            } else {
++              v_bits -= v_threshold;
++              v_range -= v_threshold;
++              v_prob -= (v_prob >> 5u);
++              self->private_data.f_probs_longrep_len_low[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
++              v_tree_node = ((v_tree_node << 1u) | 1u);
++            }
++            if ((v_range >> 24u) == 0u) {
++              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++                status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
++                goto exit;
++              }
++              v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++              iop_a_src += 1u;
++              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++              v_range <<= 8u;
++            }
++          }
++          v_len = ((v_tree_node & 7u) + 2u);
++          v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_LONGREP[v_state]));
++          break;
++        }
++        v_bits -= v_threshold;
++        v_range -= v_threshold;
++        v_prob -= (v_prob >> 5u);
++        self->private_data.f_probs_longrep_len_low[0u][0u] = ((uint16_t)(v_prob));
++        if ((v_range >> 24u) == 0u) {
++          if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++            status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
++            goto exit;
++          }
++          v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++          iop_a_src += 1u;
++          v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++          v_range <<= 8u;
++        }
++        v_prob = ((uint32_t)(self->private_data.f_probs_longrep_len_mid[0u][0u]));
++        v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++        if (v_bits < v_threshold) {
++          v_range = v_threshold;
++          v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++          self->private_data.f_probs_longrep_len_mid[0u][0u] = ((uint16_t)(v_prob));
++          if ((v_range >> 24u) == 0u) {
++            if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++              status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
++              goto exit;
++            }
++            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++            iop_a_src += 1u;
++            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++            v_range <<= 8u;
++          }
++          v_index_len = ((uint32_t)((v_pos & v_pb_mask)));
++          v_tree_node = 1u;
++          while (v_tree_node < 8u) {
++            v_prob = ((uint32_t)(self->private_data.f_probs_longrep_len_mid[v_index_len][v_tree_node]));
++            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++            if (v_bits < v_threshold) {
++              v_range = v_threshold;
++              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++              self->private_data.f_probs_longrep_len_mid[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
++              v_tree_node = (v_tree_node << 1u);
++            } else {
++              v_bits -= v_threshold;
++              v_range -= v_threshold;
++              v_prob -= (v_prob >> 5u);
++              self->private_data.f_probs_longrep_len_mid[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
++              v_tree_node = ((v_tree_node << 1u) | 1u);
++            }
++            if ((v_range >> 24u) == 0u) {
++              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++                status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
++                goto exit;
++              }
++              v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++              iop_a_src += 1u;
++              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++              v_range <<= 8u;
++            }
++          }
++          v_len = ((v_tree_node & 7u) + 10u);
++          v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_LONGREP[v_state]));
++          break;
++        }
++        v_bits -= v_threshold;
++        v_range -= v_threshold;
++        v_prob -= (v_prob >> 5u);
++        self->private_data.f_probs_longrep_len_mid[0u][0u] = ((uint16_t)(v_prob));
++        if ((v_range >> 24u) == 0u) {
++          if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++            status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
++            goto exit;
++          }
++          v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++          iop_a_src += 1u;
++          v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++          v_range <<= 8u;
++        }
++        v_tree_node = 1u;
++        while (v_tree_node < 256u) {
++          v_prob = ((uint32_t)(self->private_data.f_probs_longrep_len_high[0u][v_tree_node]));
++          v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++          if (v_bits < v_threshold) {
++            v_range = v_threshold;
++            v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++            self->private_data.f_probs_longrep_len_high[0u][v_tree_node] = ((uint16_t)(v_prob));
++            v_tree_node = (v_tree_node << 1u);
++          } else {
++            v_bits -= v_threshold;
++            v_range -= v_threshold;
++            v_prob -= (v_prob >> 5u);
++            self->private_data.f_probs_longrep_len_high[0u][v_tree_node] = ((uint16_t)(v_prob));
++            v_tree_node = ((v_tree_node << 1u) | 1u);
++          }
++          if ((v_range >> 24u) == 0u) {
++            if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++              status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
++              goto exit;
++            }
++            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++            iop_a_src += 1u;
++            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++            v_range <<= 8u;
++          }
++        }
++        v_len = ((v_tree_node & 255u) + 18u);
++        v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_LONGREP[v_state]));
++      } while (0);
++    } while (0);
++    v_dist = (v_rep0 + 1u);
++    if ((((uint64_t)(v_dist)) > v_pos) || (((uint64_t)(v_dist)) > ((uint64_t)(self->private_impl.f_dict_size)))) {
++      status = wuffs_base__make_status(wuffs_lzma__error__bad_distance);
++      goto exit;
++    }
++    v_pos += ((uint64_t)(v_len));
++    if (((uint64_t)(v_dist)) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
++      v_adj_dist = ((uint32_t)((((uint64_t)(v_dist)) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
++      if (v_adj_dist > self->private_impl.f_dict_seen) {
++        status = wuffs_base__make_status(wuffs_lzma__error__bad_distance);
++        goto exit;
++      }
++      v_wb_index = ((uint64_t)(((uint64_t)(self->private_impl.f_dict_workbuf_index)) - ((uint64_t)(v_adj_dist))));
++      while (v_wb_index >= 9223372036854775808u) {
++        v_wb_index += ((uint64_t)(self->private_impl.f_dict_size));
++      }
++      if (v_wb_index >= ((uint64_t)(a_workbuf.len))) {
++        status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
++        goto exit;
++      }
++      if (v_len < v_adj_dist) {
++        wuffs_private_impl__io_writer__limited_copy_u32_from_slice(
++            &iop_a_dst, io2_a_dst,(v_len + 1u), wuffs_base__slice_u8__subslice_i(a_workbuf, v_wb_index));
++        if ( ! (iop_a_dst > io1_a_dst)) {
++          status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
++          goto exit;
++        }
++        v_match_byte = ((uint32_t)(iop_a_dst[-1]));
++        iop_a_dst--;
++        if ( ! (iop_a_dst > io1_a_dst)) {
++          status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
++          goto exit;
++        }
++        v_prev_byte = iop_a_dst[-1];
++        continue;
++      } else if (v_len == v_adj_dist) {
++        wuffs_private_impl__io_writer__limited_copy_u32_from_slice(
++            &iop_a_dst, io2_a_dst,v_len, wuffs_base__slice_u8__subslice_i(a_workbuf, v_wb_index));
++        wuffs_private_impl__io_writer__limited_copy_u32_from_history(
++            &iop_a_dst, io0_a_dst, io2_a_dst, 1u, v_dist);
++        if ( ! (iop_a_dst > io1_a_dst)) {
++          status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
++          goto exit;
++        }
++        v_match_byte = ((uint32_t)(iop_a_dst[-1]));
++        iop_a_dst--;
++        if ( ! (iop_a_dst > io1_a_dst)) {
++          status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
++          goto exit;
++        }
++        v_prev_byte = iop_a_dst[-1];
++        continue;
++      }
++      wuffs_private_impl__io_writer__limited_copy_u32_from_slice(
++          &iop_a_dst, io2_a_dst,v_adj_dist, wuffs_base__slice_u8__subslice_i(a_workbuf, v_wb_index));
++      v_len -= v_adj_dist;
++      if ((((uint64_t)(v_len)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_len + 8u))) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)(v_dist)) > ((uint64_t)(iop_a_dst - io0_a_dst)))) {
++        status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
++        goto exit;
++      }
++    }
++    if (v_dist >= 8u) {
++      v_match_cusp = wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast_return_cusp(
++          &iop_a_dst, io0_a_dst, io2_a_dst, v_len, v_dist);
++      v_match_byte = (v_match_cusp >> 8u);
++      v_prev_byte = ((uint8_t)(v_match_cusp));
++    } else {
++      v_match_cusp = wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast_return_cusp(
++          &iop_a_dst, io0_a_dst, io2_a_dst, v_len, v_dist);
++      v_match_byte = (v_match_cusp >> 8u);
++      v_prev_byte = ((uint8_t)(v_match_cusp));
++    }
++  }
++  label__outer__break:;
++  self->private_impl.f_stashed_bytes[0u] = v_prev_byte;
++  self->private_impl.f_stashed_bytes[1u] = ((uint8_t)(v_match_byte));
++  self->private_impl.f_stashed_bits = v_bits;
++  self->private_impl.f_stashed_range = v_range;
++  self->private_impl.f_stashed_state = v_state;
++  self->private_impl.f_stashed_rep0 = v_rep0;
++  self->private_impl.f_stashed_rep1 = v_rep1;
++  self->private_impl.f_stashed_rep2 = v_rep2;
++  self->private_impl.f_stashed_rep3 = v_rep3;
++  self->private_impl.f_stashed_pos = v_pos;
++  self->private_impl.f_stashed_pos_end = v_pos_end;
++  goto exit;
++  exit:
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++  }
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func lzma.decoder.decode_bitstream_slow
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_lzma__decoder__decode_bitstream_slow(
++    wuffs_lzma__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_c8 = 0;
++  uint32_t v_bits = 0;
++  uint32_t v_range = 0;
++  uint32_t v_state = 0;
++  uint32_t v_rep0 = 0;
++  uint32_t v_rep1 = 0;
++  uint32_t v_rep2 = 0;
++  uint32_t v_rep3 = 0;
++  uint32_t v_reptmp = 0;
++  uint32_t v_rep = 0;
++  uint64_t v_pos = 0;
++  uint64_t v_pos_end = 0;
++  uint32_t v_lc = 0;
++  uint64_t v_lp_mask = 0;
++  uint64_t v_pb_mask = 0;
++  uint32_t v_prob = 0;
++  uint32_t v_threshold = 0;
++  uint32_t v_tree_node = 0;
++  uint8_t v_prev_byte = 0;
++  uint32_t v_match_byte = 0;
++  uint32_t v_match_cusp = 0;
++  uint32_t v_len_state = 0;
++  uint32_t v_slot = 0;
++  uint32_t v_len = 0;
++  uint32_t v_lanl_offset = 0;
++  uint32_t v_lanl_old_offset = 0;
++  uint32_t v_lanl_index = 0;
++  uint32_t v_num_extra_bits = 0;
++  uint32_t v_dist_extra_bits = 0;
++  uint32_t v_high_bit_was_on = 0;
++  uint32_t v_i = 0;
++  uint32_t v_index_ao00 = 0;
++  uint32_t v_index_ao41 = 0;
++  uint32_t v_index_lit = 0;
++  uint32_t v_index_len = 0;
++  uint32_t v_index_small_dist_base = 0;
++  uint32_t v_index_small_dist_extra = 0;
++  uint32_t v_index_small_dist = 0;
++  uint32_t v_index_large_dist = 0;
++  uint32_t v_dist = 0;
++  uint32_t v_adj_dist = 0;
++  uint64_t v_wb_index = 0;
++
++  uint8_t* iop_a_dst = NULL;
++  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
++    }
++  }
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_bitstream_slow;
++  if (coro_susp_point) {
++    v_bits = self->private_data.s_decode_bitstream_slow.v_bits;
++    v_range = self->private_data.s_decode_bitstream_slow.v_range;
++    v_state = self->private_data.s_decode_bitstream_slow.v_state;
++    v_rep0 = self->private_data.s_decode_bitstream_slow.v_rep0;
++    v_rep1 = self->private_data.s_decode_bitstream_slow.v_rep1;
++    v_rep2 = self->private_data.s_decode_bitstream_slow.v_rep2;
++    v_rep3 = self->private_data.s_decode_bitstream_slow.v_rep3;
++    v_rep = self->private_data.s_decode_bitstream_slow.v_rep;
++    v_pos = self->private_data.s_decode_bitstream_slow.v_pos;
++    v_pos_end = self->private_data.s_decode_bitstream_slow.v_pos_end;
++    v_lc = self->private_data.s_decode_bitstream_slow.v_lc;
++    v_lp_mask = self->private_data.s_decode_bitstream_slow.v_lp_mask;
++    v_pb_mask = self->private_data.s_decode_bitstream_slow.v_pb_mask;
++    v_tree_node = self->private_data.s_decode_bitstream_slow.v_tree_node;
++    v_prev_byte = self->private_data.s_decode_bitstream_slow.v_prev_byte;
++    v_match_byte = self->private_data.s_decode_bitstream_slow.v_match_byte;
++    v_len_state = self->private_data.s_decode_bitstream_slow.v_len_state;
++    v_slot = self->private_data.s_decode_bitstream_slow.v_slot;
++    v_len = self->private_data.s_decode_bitstream_slow.v_len;
++    v_lanl_offset = self->private_data.s_decode_bitstream_slow.v_lanl_offset;
++    v_num_extra_bits = self->private_data.s_decode_bitstream_slow.v_num_extra_bits;
++    v_dist_extra_bits = self->private_data.s_decode_bitstream_slow.v_dist_extra_bits;
++    v_i = self->private_data.s_decode_bitstream_slow.v_i;
++    v_index_lit = self->private_data.s_decode_bitstream_slow.v_index_lit;
++    v_index_len = self->private_data.s_decode_bitstream_slow.v_index_len;
++    v_index_small_dist_base = self->private_data.s_decode_bitstream_slow.v_index_small_dist_base;
++    v_index_small_dist_extra = self->private_data.s_decode_bitstream_slow.v_index_small_dist_extra;
++    v_index_large_dist = self->private_data.s_decode_bitstream_slow.v_index_large_dist;
++    v_dist = self->private_data.s_decode_bitstream_slow.v_dist;
++  }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    v_prev_byte = self->private_impl.f_stashed_bytes[0u];
++    v_match_byte = ((uint32_t)(self->private_impl.f_stashed_bytes[1u]));
++    v_bits = self->private_impl.f_stashed_bits;
++    v_range = self->private_impl.f_stashed_range;
++    v_state = self->private_impl.f_stashed_state;
++    v_rep0 = self->private_impl.f_stashed_rep0;
++    v_rep1 = self->private_impl.f_stashed_rep1;
++    v_rep2 = self->private_impl.f_stashed_rep2;
++    v_rep3 = self->private_impl.f_stashed_rep3;
++    v_pos = self->private_impl.f_stashed_pos;
++    v_pos_end = self->private_impl.f_stashed_pos_end;
++    v_lc = self->private_impl.f_lc;
++    v_lp_mask = ((((uint64_t)(1u)) << self->private_impl.f_lp) - 1u);
++    v_pb_mask = ((((uint64_t)(1u)) << self->private_impl.f_pb) - 1u);
++    while ( ! (self->private_impl.p_decode_bitstream_slow != 0)) {
++      if (v_pos >= v_pos_end) {
++        self->private_impl.f_end_of_chunk = true;
++        break;
++      }
++      v_index_ao00 = ((v_state << 4u) | ((uint32_t)((v_pos & v_pb_mask))));
++      v_prob = ((uint32_t)(self->private_data.f_probs_ao00[v_index_ao00]));
++      v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++      if (v_bits < v_threshold) {
++        v_range = v_threshold;
++        v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++        self->private_data.f_probs_ao00[v_index_ao00] = ((uint16_t)(v_prob));
++        if ((v_range >> 24u) == 0u) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint8_t t_0 = *iop_a_src++;
++            v_c8 = t_0;
++          }
++          v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++          v_range <<= 8u;
++        }
++        v_index_lit = (15u & ((((uint32_t)((v_pos & v_lp_mask))) << v_lc) | (((uint32_t)(v_prev_byte)) >> (8u - v_lc))));
++        if (v_state >= 7u) {
++          v_lanl_offset = 256u;
++          v_tree_node = 1u;
++          while (v_tree_node < 256u) {
++            v_match_byte <<= 1u;
++            v_lanl_old_offset = v_lanl_offset;
++            v_lanl_offset &= v_match_byte;
++            v_lanl_index = (v_lanl_offset + v_lanl_old_offset + v_tree_node);
++            v_prob = ((uint32_t)(self->private_data.f_probs_lit[v_index_lit][v_lanl_index]));
++            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++            if (v_bits < v_threshold) {
++              v_lanl_offset = ((v_lanl_offset ^ v_lanl_old_offset) & 256u);
++              v_range = v_threshold;
++              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++              self->private_data.f_probs_lit[v_index_lit][v_lanl_index] = ((uint16_t)(v_prob));
++              v_tree_node = (v_tree_node << 1u);
++            } else {
++              v_bits -= v_threshold;
++              v_range -= v_threshold;
++              v_prob -= (v_prob >> 5u);
++              self->private_data.f_probs_lit[v_index_lit][v_lanl_index] = ((uint16_t)(v_prob));
++              v_tree_node = ((v_tree_node << 1u) | 1u);
++            }
++            if ((v_range >> 24u) == 0u) {
++              {
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint8_t t_1 = *iop_a_src++;
++                v_c8 = t_1;
++              }
++              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++              v_range <<= 8u;
++            }
++          }
++        } else {
++          v_tree_node = 1u;
++          while (v_tree_node < 256u) {
++            v_prob = ((uint32_t)(self->private_data.f_probs_lit[v_index_lit][v_tree_node]));
++            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++            if (v_bits < v_threshold) {
++              v_range = v_threshold;
++              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++              self->private_data.f_probs_lit[v_index_lit][v_tree_node] = ((uint16_t)(v_prob));
++              v_tree_node = (v_tree_node << 1u);
++            } else {
++              v_bits -= v_threshold;
++              v_range -= v_threshold;
++              v_prob -= (v_prob >> 5u);
++              self->private_data.f_probs_lit[v_index_lit][v_tree_node] = ((uint16_t)(v_prob));
++              v_tree_node = ((v_tree_node << 1u) | 1u);
++            }
++            if ((v_range >> 24u) == 0u) {
++              {
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint8_t t_2 = *iop_a_src++;
++                v_c8 = t_2;
++              }
++              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++              v_range <<= 8u;
++            }
++          }
++        }
++        v_prev_byte = ((uint8_t)(v_tree_node));
++        self->private_data.s_decode_bitstream_slow.scratch = v_prev_byte;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++        if (iop_a_dst == io2_a_dst) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++          goto suspend;
++        }
++        *iop_a_dst++ = ((uint8_t)(self->private_data.s_decode_bitstream_slow.scratch));
++        v_pos += 1u;
++        v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_LITERAL[v_state]));
++        continue;
++      }
++      v_bits -= v_threshold;
++      v_range -= v_threshold;
++      v_prob -= (v_prob >> 5u);
++      self->private_data.f_probs_ao00[v_index_ao00] = ((uint16_t)(v_prob));
++      if ((v_range >> 24u) == 0u) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_3 = *iop_a_src++;
++          v_c8 = t_3;
++        }
++        v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++        v_range <<= 8u;
++      }
++      do {
++        v_prob = ((uint32_t)(self->private_data.f_probs_ao20[v_state]));
++        v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++        if (v_bits < v_threshold) {
++          v_range = v_threshold;
++          v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++          self->private_data.f_probs_ao20[v_state] = ((uint16_t)(v_prob));
++          if ((v_range >> 24u) == 0u) {
++            {
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint8_t t_4 = *iop_a_src++;
++              v_c8 = t_4;
++            }
++            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++            v_range <<= 8u;
++          }
++          do {
++            v_prob = ((uint32_t)(self->private_data.f_probs_match_len_low[0u][0u]));
++            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++            if (v_bits < v_threshold) {
++              v_range = v_threshold;
++              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++              self->private_data.f_probs_match_len_low[0u][0u] = ((uint16_t)(v_prob));
++              if ((v_range >> 24u) == 0u) {
++                {
++                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                    goto suspend;
++                  }
++                  uint8_t t_5 = *iop_a_src++;
++                  v_c8 = t_5;
++                }
++                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++                v_range <<= 8u;
++              }
++              v_index_len = ((uint32_t)((v_pos & v_pb_mask)));
++              v_tree_node = 1u;
++              while (v_tree_node < 8u) {
++                v_prob = ((uint32_t)(self->private_data.f_probs_match_len_low[v_index_len][v_tree_node]));
++                v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++                if (v_bits < v_threshold) {
++                  v_range = v_threshold;
++                  v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++                  self->private_data.f_probs_match_len_low[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
++                  v_tree_node = (v_tree_node << 1u);
++                } else {
++                  v_bits -= v_threshold;
++                  v_range -= v_threshold;
++                  v_prob -= (v_prob >> 5u);
++                  self->private_data.f_probs_match_len_low[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
++                  v_tree_node = ((v_tree_node << 1u) | 1u);
++                }
++                if ((v_range >> 24u) == 0u) {
++                  {
++                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++                    if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                      goto suspend;
++                    }
++                    uint8_t t_6 = *iop_a_src++;
++                    v_c8 = t_6;
++                  }
++                  v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++                  v_range <<= 8u;
++                }
++              }
++              v_len_state = ((uint32_t)(WUFFS_LZMA__CLAMP_NO_MORE_THAN_3[(v_tree_node & 7u)]));
++              v_len = ((v_tree_node & 7u) + 2u);
++              break;
++            }
++            v_bits -= v_threshold;
++            v_range -= v_threshold;
++            v_prob -= (v_prob >> 5u);
++            self->private_data.f_probs_match_len_low[0u][0u] = ((uint16_t)(v_prob));
++            if ((v_range >> 24u) == 0u) {
++              {
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint8_t t_7 = *iop_a_src++;
++                v_c8 = t_7;
++              }
++              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++              v_range <<= 8u;
++            }
++            v_prob = ((uint32_t)(self->private_data.f_probs_match_len_mid[0u][0u]));
++            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++            if (v_bits < v_threshold) {
++              v_range = v_threshold;
++              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++              self->private_data.f_probs_match_len_mid[0u][0u] = ((uint16_t)(v_prob));
++              if ((v_range >> 24u) == 0u) {
++                {
++                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
++                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                    goto suspend;
++                  }
++                  uint8_t t_8 = *iop_a_src++;
++                  v_c8 = t_8;
++                }
++                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++                v_range <<= 8u;
++              }
++              v_index_len = ((uint32_t)((v_pos & v_pb_mask)));
++              v_tree_node = 1u;
++              while (v_tree_node < 8u) {
++                v_prob = ((uint32_t)(self->private_data.f_probs_match_len_mid[v_index_len][v_tree_node]));
++                v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++                if (v_bits < v_threshold) {
++                  v_range = v_threshold;
++                  v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++                  self->private_data.f_probs_match_len_mid[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
++                  v_tree_node = (v_tree_node << 1u);
++                } else {
++                  v_bits -= v_threshold;
++                  v_range -= v_threshold;
++                  v_prob -= (v_prob >> 5u);
++                  self->private_data.f_probs_match_len_mid[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
++                  v_tree_node = ((v_tree_node << 1u) | 1u);
++                }
++                if ((v_range >> 24u) == 0u) {
++                  {
++                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
++                    if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                      goto suspend;
++                    }
++                    uint8_t t_9 = *iop_a_src++;
++                    v_c8 = t_9;
++                  }
++                  v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++                  v_range <<= 8u;
++                }
++              }
++              v_len = ((v_tree_node & 7u) + 10u);
++              v_len_state = 3u;
++              break;
++            }
++            v_bits -= v_threshold;
++            v_range -= v_threshold;
++            v_prob -= (v_prob >> 5u);
++            self->private_data.f_probs_match_len_mid[0u][0u] = ((uint16_t)(v_prob));
++            if ((v_range >> 24u) == 0u) {
++              {
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint8_t t_10 = *iop_a_src++;
++                v_c8 = t_10;
++              }
++              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++              v_range <<= 8u;
++            }
++            v_tree_node = 1u;
++            while (v_tree_node < 256u) {
++              v_prob = ((uint32_t)(self->private_data.f_probs_match_len_high[0u][v_tree_node]));
++              v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++              if (v_bits < v_threshold) {
++                v_range = v_threshold;
++                v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++                self->private_data.f_probs_match_len_high[0u][v_tree_node] = ((uint16_t)(v_prob));
++                v_tree_node = (v_tree_node << 1u);
++              } else {
++                v_bits -= v_threshold;
++                v_range -= v_threshold;
++                v_prob -= (v_prob >> 5u);
++                self->private_data.f_probs_match_len_high[0u][v_tree_node] = ((uint16_t)(v_prob));
++                v_tree_node = ((v_tree_node << 1u) | 1u);
++              }
++              if ((v_range >> 24u) == 0u) {
++                {
++                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
++                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                    goto suspend;
++                  }
++                  uint8_t t_11 = *iop_a_src++;
++                  v_c8 = t_11;
++                }
++                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++                v_range <<= 8u;
++              }
++            }
++            v_len = ((v_tree_node & 255u) + 18u);
++            v_len_state = 3u;
++          } while (0);
++          v_slot = 1u;
++          while (v_slot < 64u) {
++            v_prob = ((uint32_t)(self->private_data.f_probs_slot[v_len_state][v_slot]));
++            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++            if (v_bits < v_threshold) {
++              v_range = v_threshold;
++              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++              self->private_data.f_probs_slot[v_len_state][v_slot] = ((uint16_t)(v_prob));
++              v_slot = (v_slot << 1u);
++            } else {
++              v_bits -= v_threshold;
++              v_range -= v_threshold;
++              v_prob -= (v_prob >> 5u);
++              self->private_data.f_probs_slot[v_len_state][v_slot] = ((uint16_t)(v_prob));
++              v_slot = ((v_slot << 1u) | 1u);
++            }
++            if ((v_range >> 24u) == 0u) {
++              {
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint8_t t_12 = *iop_a_src++;
++                v_c8 = t_12;
++              }
++              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++              v_range <<= 8u;
++            }
++          }
++          v_slot &= 63u;
++          v_rep = v_slot;
++          if (v_slot < 4u) {
++          } else if (v_slot < 14u) {
++            v_num_extra_bits = ((v_slot >> 1u) - 1u);
++            v_rep = ((2u | (v_slot & 1u)) << v_num_extra_bits);
++            v_index_small_dist_base = ((uint32_t)(v_rep - v_slot));
++            v_index_small_dist_extra = 1u;
++            v_dist_extra_bits = 0u;
++            v_i = 0u;
++            while (v_i < v_num_extra_bits) {
++              v_index_small_dist = (((uint32_t)(v_index_small_dist_base + v_index_small_dist_extra)) & 127u);
++              v_prob = ((uint32_t)(self->private_data.f_probs_small_dist[v_index_small_dist]));
++              v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++              if (v_bits < v_threshold) {
++                v_range = v_threshold;
++                v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++                self->private_data.f_probs_small_dist[v_index_small_dist] = ((uint16_t)(v_prob));
++                v_index_small_dist_extra = ((uint32_t)(v_index_small_dist_extra << 1u));
++                v_i += 1u;
++              } else {
++                v_bits -= v_threshold;
++                v_range -= v_threshold;
++                v_prob -= (v_prob >> 5u);
++                self->private_data.f_probs_small_dist[v_index_small_dist] = ((uint16_t)(v_prob));
++                v_index_small_dist_extra = (((uint32_t)(v_index_small_dist_extra << 1u)) | 1u);
++                v_dist_extra_bits |= (((uint32_t)(1u)) << v_i);
++                v_i += 1u;
++              }
++              if ((v_range >> 24u) == 0u) {
++                {
++                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
++                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                    goto suspend;
++                  }
++                  uint8_t t_13 = *iop_a_src++;
++                  v_c8 = t_13;
++                }
++                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++                v_range <<= 8u;
++              }
++            }
++            v_rep += v_dist_extra_bits;
++          } else {
++            v_num_extra_bits = ((v_slot >> 1u) - 1u);
++            v_rep = ((2u | (v_slot & 1u)) << v_num_extra_bits);
++            v_dist_extra_bits = 0u;
++            while (true) {
++              v_range >>= 1u;
++              v_bits -= v_range;
++              v_high_bit_was_on = ((uint32_t)(0u - (v_bits >> 31u)));
++              v_bits += (v_range & v_high_bit_was_on);
++              v_dist_extra_bits = (((uint32_t)(v_dist_extra_bits << 1u)) | (((uint32_t)(v_high_bit_was_on + 1u)) & 1u));
++              if ((v_range >> 24u) == 0u) {
++                {
++                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
++                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                    goto suspend;
++                  }
++                  uint8_t t_14 = *iop_a_src++;
++                  v_c8 = t_14;
++                }
++                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++                v_range <<= 8u;
++              }
++              v_num_extra_bits -= 1u;
++              if (v_num_extra_bits <= 4u) {
++                break;
++              }
++            }
++            v_dist_extra_bits <<= 4u;
++            v_index_large_dist = 1u;
++            while (true) {
++              v_prob = ((uint32_t)(self->private_data.f_probs_large_dist[v_index_large_dist]));
++              v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++              if (v_bits < v_threshold) {
++                v_range = v_threshold;
++                v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++                self->private_data.f_probs_large_dist[v_index_large_dist] = ((uint16_t)(v_prob));
++                v_index_large_dist = (15u & ((uint32_t)(v_index_large_dist << 1u)));
++              } else {
++                v_bits -= v_threshold;
++                v_range -= v_threshold;
++                v_prob -= (v_prob >> 5u);
++                self->private_data.f_probs_large_dist[v_index_large_dist] = ((uint16_t)(v_prob));
++                v_index_large_dist = (15u & (((uint32_t)(v_index_large_dist << 1u)) | 1u));
++                v_dist_extra_bits |= (((uint32_t)(1u)) << (4u - v_num_extra_bits));
++              }
++              if ((v_range >> 24u) == 0u) {
++                {
++                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT(17);
++                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                    goto suspend;
++                  }
++                  uint8_t t_15 = *iop_a_src++;
++                  v_c8 = t_15;
++                }
++                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++                v_range <<= 8u;
++              }
++              v_num_extra_bits -= 1u;
++              if (v_num_extra_bits <= 0u) {
++                break;
++              }
++            }
++            v_rep += v_dist_extra_bits;
++          }
++          if (v_rep >= 4294967295u) {
++            self->private_impl.f_end_of_chunk = true;
++            goto label__outer__break;
++          }
++          v_rep3 = v_rep2;
++          v_rep2 = v_rep1;
++          v_rep1 = v_rep0;
++          v_rep0 = v_rep;
++          v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_MATCH[v_state]));
++          break;
++        }
++        v_bits -= v_threshold;
++        v_range -= v_threshold;
++        v_prob -= (v_prob >> 5u);
++        self->private_data.f_probs_ao20[v_state] = ((uint16_t)(v_prob));
++        if ((v_range >> 24u) == 0u) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(18);
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint8_t t_16 = *iop_a_src++;
++            v_c8 = t_16;
++          }
++          v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++          v_range <<= 8u;
++        }
++        v_prob = ((uint32_t)(self->private_data.f_probs_ao40[v_state]));
++        v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++        if (v_bits < v_threshold) {
++          v_range = v_threshold;
++          v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++          self->private_data.f_probs_ao40[v_state] = ((uint16_t)(v_prob));
++          if ((v_range >> 24u) == 0u) {
++            {
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(19);
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint8_t t_17 = *iop_a_src++;
++              v_c8 = t_17;
++            }
++            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++            v_range <<= 8u;
++          }
++          v_index_ao41 = ((v_state << 4u) | ((uint32_t)((v_pos & v_pb_mask))));
++          v_prob = ((uint32_t)(self->private_data.f_probs_ao41[v_index_ao41]));
++          v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++          if (v_bits < v_threshold) {
++            v_range = v_threshold;
++            v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++            self->private_data.f_probs_ao41[v_index_ao41] = ((uint16_t)(v_prob));
++            if ((v_range >> 24u) == 0u) {
++              {
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(20);
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint8_t t_18 = *iop_a_src++;
++                v_c8 = t_18;
++              }
++              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++              v_range <<= 8u;
++            }
++            v_len = 1u;
++            v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_SHORTREP[v_state]));
++            break;
++          }
++          v_bits -= v_threshold;
++          v_range -= v_threshold;
++          v_prob -= (v_prob >> 5u);
++          self->private_data.f_probs_ao41[v_index_ao41] = ((uint16_t)(v_prob));
++          if ((v_range >> 24u) == 0u) {
++            {
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(21);
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint8_t t_19 = *iop_a_src++;
++              v_c8 = t_19;
++            }
++            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++            v_range <<= 8u;
++          }
++        } else {
++          v_bits -= v_threshold;
++          v_range -= v_threshold;
++          v_prob -= (v_prob >> 5u);
++          self->private_data.f_probs_ao40[v_state] = ((uint16_t)(v_prob));
++          if ((v_range >> 24u) == 0u) {
++            {
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22);
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint8_t t_20 = *iop_a_src++;
++              v_c8 = t_20;
++            }
++            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++            v_range <<= 8u;
++          }
++          v_prob = ((uint32_t)(self->private_data.f_probs_ao60[v_state]));
++          v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++          if (v_bits < v_threshold) {
++            v_range = v_threshold;
++            v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++            self->private_data.f_probs_ao60[v_state] = ((uint16_t)(v_prob));
++            if ((v_range >> 24u) == 0u) {
++              {
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(23);
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint8_t t_21 = *iop_a_src++;
++                v_c8 = t_21;
++              }
++              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++              v_range <<= 8u;
++            }
++            v_reptmp = v_rep1;
++            v_rep1 = v_rep0;
++            v_rep0 = v_reptmp;
++          } else {
++            v_bits -= v_threshold;
++            v_range -= v_threshold;
++            v_prob -= (v_prob >> 5u);
++            self->private_data.f_probs_ao60[v_state] = ((uint16_t)(v_prob));
++            if ((v_range >> 24u) == 0u) {
++              {
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(24);
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint8_t t_22 = *iop_a_src++;
++                v_c8 = t_22;
++              }
++              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++              v_range <<= 8u;
++            }
++            v_prob = ((uint32_t)(self->private_data.f_probs_ao63[v_state]));
++            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++            if (v_bits < v_threshold) {
++              v_range = v_threshold;
++              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++              self->private_data.f_probs_ao63[v_state] = ((uint16_t)(v_prob));
++              if ((v_range >> 24u) == 0u) {
++                {
++                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT(25);
++                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                    goto suspend;
++                  }
++                  uint8_t t_23 = *iop_a_src++;
++                  v_c8 = t_23;
++                }
++                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++                v_range <<= 8u;
++              }
++              v_reptmp = v_rep2;
++              v_rep2 = v_rep1;
++              v_rep1 = v_rep0;
++              v_rep0 = v_reptmp;
++            } else {
++              v_bits -= v_threshold;
++              v_range -= v_threshold;
++              v_prob -= (v_prob >> 5u);
++              self->private_data.f_probs_ao63[v_state] = ((uint16_t)(v_prob));
++              if ((v_range >> 24u) == 0u) {
++                {
++                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT(26);
++                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                    goto suspend;
++                  }
++                  uint8_t t_24 = *iop_a_src++;
++                  v_c8 = t_24;
++                }
++                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++                v_range <<= 8u;
++              }
++              v_reptmp = v_rep3;
++              v_rep3 = v_rep2;
++              v_rep2 = v_rep1;
++              v_rep1 = v_rep0;
++              v_rep0 = v_reptmp;
++            }
++          }
++        }
++        do {
++          v_prob = ((uint32_t)(self->private_data.f_probs_longrep_len_low[0u][0u]));
++          v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++          if (v_bits < v_threshold) {
++            v_range = v_threshold;
++            v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++            self->private_data.f_probs_longrep_len_low[0u][0u] = ((uint16_t)(v_prob));
++            if ((v_range >> 24u) == 0u) {
++              {
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(27);
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint8_t t_25 = *iop_a_src++;
++                v_c8 = t_25;
++              }
++              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++              v_range <<= 8u;
++            }
++            v_index_len = ((uint32_t)((v_pos & v_pb_mask)));
++            v_tree_node = 1u;
++            while (v_tree_node < 8u) {
++              v_prob = ((uint32_t)(self->private_data.f_probs_longrep_len_low[v_index_len][v_tree_node]));
++              v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++              if (v_bits < v_threshold) {
++                v_range = v_threshold;
++                v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++                self->private_data.f_probs_longrep_len_low[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
++                v_tree_node = (v_tree_node << 1u);
++              } else {
++                v_bits -= v_threshold;
++                v_range -= v_threshold;
++                v_prob -= (v_prob >> 5u);
++                self->private_data.f_probs_longrep_len_low[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
++                v_tree_node = ((v_tree_node << 1u) | 1u);
++              }
++              if ((v_range >> 24u) == 0u) {
++                {
++                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT(28);
++                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                    goto suspend;
++                  }
++                  uint8_t t_26 = *iop_a_src++;
++                  v_c8 = t_26;
++                }
++                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++                v_range <<= 8u;
++              }
++            }
++            v_len = ((v_tree_node & 7u) + 2u);
++            v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_LONGREP[v_state]));
++            break;
++          }
++          v_bits -= v_threshold;
++          v_range -= v_threshold;
++          v_prob -= (v_prob >> 5u);
++          self->private_data.f_probs_longrep_len_low[0u][0u] = ((uint16_t)(v_prob));
++          if ((v_range >> 24u) == 0u) {
++            {
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(29);
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint8_t t_27 = *iop_a_src++;
++              v_c8 = t_27;
++            }
++            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++            v_range <<= 8u;
++          }
++          v_prob = ((uint32_t)(self->private_data.f_probs_longrep_len_mid[0u][0u]));
++          v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++          if (v_bits < v_threshold) {
++            v_range = v_threshold;
++            v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++            self->private_data.f_probs_longrep_len_mid[0u][0u] = ((uint16_t)(v_prob));
++            if ((v_range >> 24u) == 0u) {
++              {
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(30);
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint8_t t_28 = *iop_a_src++;
++                v_c8 = t_28;
++              }
++              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++              v_range <<= 8u;
++            }
++            v_index_len = ((uint32_t)((v_pos & v_pb_mask)));
++            v_tree_node = 1u;
++            while (v_tree_node < 8u) {
++              v_prob = ((uint32_t)(self->private_data.f_probs_longrep_len_mid[v_index_len][v_tree_node]));
++              v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++              if (v_bits < v_threshold) {
++                v_range = v_threshold;
++                v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++                self->private_data.f_probs_longrep_len_mid[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
++                v_tree_node = (v_tree_node << 1u);
++              } else {
++                v_bits -= v_threshold;
++                v_range -= v_threshold;
++                v_prob -= (v_prob >> 5u);
++                self->private_data.f_probs_longrep_len_mid[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
++                v_tree_node = ((v_tree_node << 1u) | 1u);
++              }
++              if ((v_range >> 24u) == 0u) {
++                {
++                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT(31);
++                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                    goto suspend;
++                  }
++                  uint8_t t_29 = *iop_a_src++;
++                  v_c8 = t_29;
++                }
++                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++                v_range <<= 8u;
++              }
++            }
++            v_len = ((v_tree_node & 7u) + 10u);
++            v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_LONGREP[v_state]));
++            break;
++          }
++          v_bits -= v_threshold;
++          v_range -= v_threshold;
++          v_prob -= (v_prob >> 5u);
++          self->private_data.f_probs_longrep_len_mid[0u][0u] = ((uint16_t)(v_prob));
++          if ((v_range >> 24u) == 0u) {
++            {
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(32);
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint8_t t_30 = *iop_a_src++;
++              v_c8 = t_30;
++            }
++            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++            v_range <<= 8u;
++          }
++          v_tree_node = 1u;
++          while (v_tree_node < 256u) {
++            v_prob = ((uint32_t)(self->private_data.f_probs_longrep_len_high[0u][v_tree_node]));
++            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
++            if (v_bits < v_threshold) {
++              v_range = v_threshold;
++              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
++              self->private_data.f_probs_longrep_len_high[0u][v_tree_node] = ((uint16_t)(v_prob));
++              v_tree_node = (v_tree_node << 1u);
++            } else {
++              v_bits -= v_threshold;
++              v_range -= v_threshold;
++              v_prob -= (v_prob >> 5u);
++              self->private_data.f_probs_longrep_len_high[0u][v_tree_node] = ((uint16_t)(v_prob));
++              v_tree_node = ((v_tree_node << 1u) | 1u);
++            }
++            if ((v_range >> 24u) == 0u) {
++              {
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(33);
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint8_t t_31 = *iop_a_src++;
++                v_c8 = t_31;
++              }
++              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
++              v_range <<= 8u;
++            }
++          }
++          v_len = ((v_tree_node & 255u) + 18u);
++          v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_LONGREP[v_state]));
++        } while (0);
++      } while (0);
++      v_dist = (v_rep0 + 1u);
++      if ((((uint64_t)(v_dist)) > v_pos) || (((uint64_t)(v_dist)) > ((uint64_t)(self->private_impl.f_dict_size)))) {
++        status = wuffs_base__make_status(wuffs_lzma__error__bad_distance);
++        goto exit;
++      }
++      v_pos += ((uint64_t)(v_len));
++      while (274u > ((uint64_t)(io2_a_dst - iop_a_dst))) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(34);
++      }
++      if (((uint64_t)(v_dist)) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
++        v_adj_dist = ((uint32_t)((((uint64_t)(v_dist)) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
++        if (v_adj_dist > self->private_impl.f_dict_seen) {
++          status = wuffs_base__make_status(wuffs_lzma__error__bad_distance);
++          goto exit;
++        }
++        v_wb_index = ((uint64_t)(((uint64_t)(self->private_impl.f_dict_workbuf_index)) - ((uint64_t)(v_adj_dist))));
++        while (v_wb_index >= 9223372036854775808u) {
++          v_wb_index += ((uint64_t)(self->private_impl.f_dict_size));
++        }
++        if (v_wb_index >= ((uint64_t)(a_workbuf.len))) {
++          status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
++          goto exit;
++        }
++        if (v_len < v_adj_dist) {
++          wuffs_private_impl__io_writer__limited_copy_u32_from_slice(
++              &iop_a_dst, io2_a_dst,(v_len + 1u), wuffs_base__slice_u8__subslice_i(a_workbuf, v_wb_index));
++          if ( ! (iop_a_dst > io1_a_dst)) {
++            status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
++            goto exit;
++          }
++          v_match_byte = ((uint32_t)(iop_a_dst[-1]));
++          iop_a_dst--;
++          if ( ! (iop_a_dst > io1_a_dst)) {
++            status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
++            goto exit;
++          }
++          v_prev_byte = iop_a_dst[-1];
++          continue;
++        } else if (v_len == v_adj_dist) {
++          wuffs_private_impl__io_writer__limited_copy_u32_from_slice(
++              &iop_a_dst, io2_a_dst,v_len, wuffs_base__slice_u8__subslice_i(a_workbuf, v_wb_index));
++          wuffs_private_impl__io_writer__limited_copy_u32_from_history(
++              &iop_a_dst, io0_a_dst, io2_a_dst, 1u, v_dist);
++          if ( ! (iop_a_dst > io1_a_dst)) {
++            status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
++            goto exit;
++          }
++          v_match_byte = ((uint32_t)(iop_a_dst[-1]));
++          iop_a_dst--;
++          if ( ! (iop_a_dst > io1_a_dst)) {
++            status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
++            goto exit;
++          }
++          v_prev_byte = iop_a_dst[-1];
++          continue;
++        }
++        wuffs_private_impl__io_writer__limited_copy_u32_from_slice(
++            &iop_a_dst, io2_a_dst,v_adj_dist, wuffs_base__slice_u8__subslice_i(a_workbuf, v_wb_index));
++        v_len -= v_adj_dist;
++        if ((((uint64_t)(v_len)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)(v_dist)) > ((uint64_t)(iop_a_dst - io0_a_dst)))) {
++          status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
++          goto exit;
++        }
++      }
++      v_match_cusp = wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast_return_cusp(
++          &iop_a_dst, io0_a_dst, io2_a_dst, v_len, v_dist);
++      v_match_byte = (v_match_cusp >> 8u);
++      v_prev_byte = ((uint8_t)(v_match_cusp));
++    }
++    label__outer__break:;
++    self->private_impl.f_stashed_bytes[0u] = v_prev_byte;
++    self->private_impl.f_stashed_bytes[1u] = ((uint8_t)(v_match_byte));
++    self->private_impl.f_stashed_bits = v_bits;
++    self->private_impl.f_stashed_range = v_range;
++    self->private_impl.f_stashed_state = v_state;
++    self->private_impl.f_stashed_rep0 = v_rep0;
++    self->private_impl.f_stashed_rep1 = v_rep1;
++    self->private_impl.f_stashed_rep2 = v_rep2;
++    self->private_impl.f_stashed_rep3 = v_rep3;
++    self->private_impl.f_stashed_pos = v_pos;
++    self->private_impl.f_stashed_pos_end = v_pos_end;
++
++    ok:
++    self->private_impl.p_decode_bitstream_slow = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_bitstream_slow = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_bitstream_slow.v_bits = v_bits;
++  self->private_data.s_decode_bitstream_slow.v_range = v_range;
++  self->private_data.s_decode_bitstream_slow.v_state = v_state;
++  self->private_data.s_decode_bitstream_slow.v_rep0 = v_rep0;
++  self->private_data.s_decode_bitstream_slow.v_rep1 = v_rep1;
++  self->private_data.s_decode_bitstream_slow.v_rep2 = v_rep2;
++  self->private_data.s_decode_bitstream_slow.v_rep3 = v_rep3;
++  self->private_data.s_decode_bitstream_slow.v_rep = v_rep;
++  self->private_data.s_decode_bitstream_slow.v_pos = v_pos;
++  self->private_data.s_decode_bitstream_slow.v_pos_end = v_pos_end;
++  self->private_data.s_decode_bitstream_slow.v_lc = v_lc;
++  self->private_data.s_decode_bitstream_slow.v_lp_mask = v_lp_mask;
++  self->private_data.s_decode_bitstream_slow.v_pb_mask = v_pb_mask;
++  self->private_data.s_decode_bitstream_slow.v_tree_node = v_tree_node;
++  self->private_data.s_decode_bitstream_slow.v_prev_byte = v_prev_byte;
++  self->private_data.s_decode_bitstream_slow.v_match_byte = v_match_byte;
++  self->private_data.s_decode_bitstream_slow.v_len_state = v_len_state;
++  self->private_data.s_decode_bitstream_slow.v_slot = v_slot;
++  self->private_data.s_decode_bitstream_slow.v_len = v_len;
++  self->private_data.s_decode_bitstream_slow.v_lanl_offset = v_lanl_offset;
++  self->private_data.s_decode_bitstream_slow.v_num_extra_bits = v_num_extra_bits;
++  self->private_data.s_decode_bitstream_slow.v_dist_extra_bits = v_dist_extra_bits;
++  self->private_data.s_decode_bitstream_slow.v_i = v_i;
++  self->private_data.s_decode_bitstream_slow.v_index_lit = v_index_lit;
++  self->private_data.s_decode_bitstream_slow.v_index_len = v_index_len;
++  self->private_data.s_decode_bitstream_slow.v_index_small_dist_base = v_index_small_dist_base;
++  self->private_data.s_decode_bitstream_slow.v_index_small_dist_extra = v_index_small_dist_extra;
++  self->private_data.s_decode_bitstream_slow.v_index_large_dist = v_index_large_dist;
++  self->private_data.s_decode_bitstream_slow.v_dist = v_dist;
++
++  goto exit;
++  exit:
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++  }
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func lzma.decoder.add_history
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_lzma__decoder__add_history(
++    wuffs_lzma__decoder* self,
++    wuffs_base__slice_u8 a_hist,
++    wuffs_base__slice_u8 a_workbuf) {
++  uint64_t v_dict_workbuf_index = 0;
++  uint64_t v_dict_size = 0;
++  uint64_t v_hist_length = 0;
++  wuffs_base__slice_u8 v_s = {0};
++  uint64_t v_n_copied = 0;
++  uint64_t v_n = 0;
++
++  v_dict_workbuf_index = ((uint64_t)(self->private_impl.f_dict_workbuf_index));
++  v_dict_size = ((uint64_t)(self->private_impl.f_dict_size));
++  if (((uint64_t)(a_hist.len)) == 0u) {
++    return wuffs_base__make_status(NULL);
++  }
++  if (((uint64_t)(a_workbuf.len)) < (v_dict_size + 273u)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
++  }
++  v_hist_length = ((uint64_t)(a_hist.len));
++  if (v_hist_length > 4294967295u) {
++    self->private_impl.f_dict_seen = 4294967295u;
++  } else {
++    wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dict_seen, ((uint32_t)(v_hist_length)));
++  }
++  v_s = a_hist;
++  if (((uint64_t)(v_s.len)) >= v_dict_size) {
++    v_s = wuffs_private_impl__slice_u8__suffix(v_s, v_dict_size);
++    wuffs_private_impl__slice_u8__copy_from_slice(a_workbuf, v_s);
++    self->private_impl.f_dict_workbuf_index = 0u;
++  } else if (v_dict_workbuf_index > v_dict_size) {
++    return wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
++  } else {
++    v_n_copied = wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__slice_u8__subslice_ij(a_workbuf, v_dict_workbuf_index, v_dict_size), v_s);
++    if (v_n_copied < ((uint64_t)(v_s.len))) {
++      v_n = wuffs_private_impl__slice_u8__copy_from_slice(a_workbuf, wuffs_base__slice_u8__subslice_i(v_s, v_n_copied));
++      self->private_impl.f_dict_workbuf_index = ((uint32_t)(v_n));
++    } else {
++      v_n = ((uint64_t)(v_dict_workbuf_index + v_n_copied));
++      if (v_n < v_dict_size) {
++        self->private_impl.f_dict_workbuf_index = ((uint32_t)(v_n));
++      } else {
++        self->private_impl.f_dict_workbuf_index = 0u;
++      }
++    }
++  }
++  if ((273u > v_dict_size) || (v_dict_size > ((uint64_t)(a_workbuf.len)))) {
++    return wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
++  }
++  wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__slice_u8__subslice_i(a_workbuf, v_dict_size), wuffs_base__slice_u8__subslice_j(a_workbuf, 273u));
++  return wuffs_base__make_status(NULL);
++}
++
++// -------- func lzma.decoder.get_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_lzma__decoder__get_quirk(
++    const wuffs_lzma__decoder* self,
++    uint32_t a_key) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  if (a_key == 1348001792u) {
++    if (self->private_impl.f_allow_non_zero_initial_byte) {
++      return 1u;
++    }
++  } else if (a_key == 1348001793u) {
++    return ((uint64_t)(self->private_impl.f_format_extension));
++  }
++  return 0u;
++}
++
++// -------- func lzma.decoder.set_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_lzma__decoder__set_quirk(
++    wuffs_lzma__decoder* self,
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++
++  uint32_t v_v = 0;
++  uint32_t v_n = 0;
++
++  if (a_key == 1348001792u) {
++    self->private_impl.f_allow_non_zero_initial_byte = (a_value > 0u);
++  } else if (a_key == 1348001793u) {
++    if (a_value == 0u) {
++      self->private_impl.f_format_extension = 0u;
++      return wuffs_base__make_status(NULL);
++    } else if ((a_value & 255u) == 1u) {
++      if ((a_value >> 8u) <= 255u) {
++        self->private_impl.f_format_extension = ((uint32_t)(a_value));
++        v_v = (self->private_impl.f_format_extension >> 8u);
++        v_n = (((uint32_t)(1u)) << (v_v & 31u));
++        wuffs_private_impl__u32__sat_sub_indirect(&v_n, ((v_n >> 4u) * ((v_v >> 5u) & 7u)));
++        if ((v_n < 4096u) || (536870912u < v_n)) {
++          return wuffs_base__make_status(wuffs_base__error__bad_argument);
++        }
++        self->private_impl.f_dict_size = v_n;
++        return wuffs_base__make_status(NULL);
++      }
++    } else if ((a_value & 255u) == 2u) {
++      if ((a_value >> 8u) <= 40u) {
++        self->private_impl.f_format_extension = ((uint32_t)(a_value));
++        v_v = (self->private_impl.f_format_extension >> 8u);
++        if (v_v < 40u) {
++          self->private_impl.f_dict_size = ((2u | (v_v & 1u)) << ((v_v >> 1u) + 11u));
++        } else {
++          self->private_impl.f_dict_size = 4294967295u;
++        }
++        return wuffs_base__make_status(NULL);
++      }
++    }
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++}
++
++// -------- func lzma.decoder.dst_history_retain_length
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
++wuffs_lzma__decoder__dst_history_retain_length(
++    const wuffs_lzma__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__make_optional_u63(false, 0u);
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__make_optional_u63(false, 0u);
++  }
++
++  return wuffs_base__utility__make_optional_u63(true, 0u);
++}
++
++// -------- func lzma.decoder.workbuf_len
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_lzma__decoder__workbuf_len(
++    const wuffs_lzma__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++
++  uint64_t v_m = 0;
++
++  if (self->private_impl.f_dict_size == 0u) {
++    return wuffs_base__utility__make_range_ii_u64(0u, 0u);
++  }
++  v_m = (((uint64_t)(self->private_impl.f_dict_size)) + 273u);
++  return wuffs_base__utility__make_range_ii_u64(v_m, v_m);
++}
++
++// -------- func lzma.decoder.transform_io
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_lzma__decoder__transform_io(
++    wuffs_lzma__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_dst || !a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 1)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint64_t v_mark = 0;
++  wuffs_base__status v_dti_status = wuffs_base__make_status(NULL);
++  wuffs_base__status v_ah_status = wuffs_base__make_status(NULL);
++
++  uint8_t* iop_a_dst = NULL;
++  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
++    }
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_transform_io;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      v_mark = ((uint64_t)(iop_a_dst - io0_a_dst));
++      {
++        if (a_dst) {
++          a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++        }
++        wuffs_base__status t_0 = wuffs_lzma__decoder__do_transform_io(self, a_dst, a_src, a_workbuf);
++        v_dti_status = t_0;
++        if (a_dst) {
++          iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
++        }
++      }
++      if ( ! wuffs_base__status__is_suspension(&v_dti_status)) {
++        status = v_dti_status;
++        if (wuffs_base__status__is_error(&status)) {
++          goto exit;
++        } else if (wuffs_base__status__is_suspension(&status)) {
++          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++          goto exit;
++        }
++        goto ok;
++      } else if ((v_dti_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_lzma__error__truncated_input);
++        goto exit;
++      }
++      v_ah_status = wuffs_lzma__decoder__add_history(self, wuffs_private_impl__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst), a_workbuf);
++      if (wuffs_base__status__is_error(&v_ah_status)) {
++        status = v_ah_status;
++        goto exit;
++      }
++      status = v_dti_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++
++    ok:
++    self->private_impl.p_transform_io = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
++
++  goto exit;
++  exit:
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++  }
++
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func lzma.decoder.do_transform_io
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_lzma__decoder__do_transform_io(
++    wuffs_lzma__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_header_byte = 0;
++  uint8_t v_c8 = 0;
++  uint32_t v_c32 = 0;
++  uint8_t v_prop_byte = 0;
++  uint32_t v_lc = 0;
++  uint32_t v_lp = 0;
++  uint32_t v_pb = 0;
++  uint32_t v_length = 0;
++  uint32_t v_n_copied = 0;
++  uint64_t v_smark = 0;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  uint8_t* iop_a_dst = NULL;
++  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
++    }
++  }
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_do_transform_io;
++  if (coro_susp_point) {
++    v_header_byte = self->private_data.s_do_transform_io.v_header_byte;
++    v_length = self->private_data.s_do_transform_io.v_length;
++  }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    self->private_impl.f_lzma2_need_prob_reset = true;
++    self->private_impl.f_lzma2_need_properties = true;
++    self->private_impl.f_lzma2_need_dict_reset = true;
++    while (true) {
++      if ((self->private_impl.f_format_extension & 255u) == 0u) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_0 = *iop_a_src++;
++          v_prop_byte = t_0;
++        }
++        if (v_prop_byte >= 225u) {
++          status = wuffs_base__make_status(wuffs_lzma__error__bad_header);
++          goto exit;
++        }
++        v_lc = ((uint32_t)(((uint8_t)(v_prop_byte % 9u))));
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        v_prop_byte /= 9u;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++        v_lp = ((uint32_t)(((uint8_t)(v_prop_byte % 5u))));
++        v_pb = ((uint32_t)(((uint8_t)(v_prop_byte / 5u))));
++        if ((v_lc + v_lp) > 4u) {
++          status = wuffs_base__make_status(wuffs_lzma__error__unsupported_properties);
++          goto exit;
++        }
++        self->private_impl.f_lc = wuffs_base__u32__min(v_lc, 4u);
++        self->private_impl.f_lp = v_lp;
++        self->private_impl.f_pb = v_pb;
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++          uint32_t t_1;
++          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++            t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++            iop_a_src += 4;
++          } else {
++            self->private_data.s_do_transform_io.scratch = 0;
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++            while (true) {
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++              uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
++              *scratch <<= 8;
++              *scratch >>= 8;
++              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
++              if (num_bits_1 == 24) {
++                t_1 = ((uint32_t)(*scratch));
++                break;
++              }
++              num_bits_1 += 8u;
++              *scratch |= ((uint64_t)(num_bits_1)) << 56;
++            }
++          }
++          v_c32 = t_1;
++        }
++        self->private_impl.f_dict_size = wuffs_base__u32__max(v_c32, 4096u);
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++          uint64_t t_2;
++          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
++            t_2 = wuffs_base__peek_u64le__no_bounds_check(iop_a_src);
++            iop_a_src += 8;
++          } else {
++            self->private_data.s_do_transform_io.scratch = 0;
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++            while (true) {
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++              uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
++              *scratch <<= 8;
++              *scratch >>= 8;
++              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
++              if (num_bits_2 == 56) {
++                t_2 = ((uint64_t)(*scratch));
++                break;
++              }
++              num_bits_2 += 8u;
++              *scratch |= ((uint64_t)(num_bits_2)) << 56;
++            }
++          }
++          self->private_impl.f_decoded_length = t_2;
++        }
++        if ((self->private_impl.f_decoded_length >= 9223372036854775808u) && (self->private_impl.f_decoded_length != 18446744073709551615u)) {
++          status = wuffs_base__make_status(wuffs_lzma__error__unsupported_decoded_length);
++          goto exit;
++        }
++        wuffs_lzma__decoder__initialize_probs(self);
++      } else if ((self->private_impl.f_format_extension & 255u) == 1u) {
++        self->private_impl.f_lc = 3u;
++        self->private_impl.f_lp = 0u;
++        self->private_impl.f_pb = 2u;
++        self->private_impl.f_decoded_length = 18446744073709551615u;
++        wuffs_lzma__decoder__initialize_probs(self);
++      } else {
++        while (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
++        }
++        if (wuffs_base__peek_u8be__no_bounds_check(iop_a_src) == 0u) {
++          iop_a_src += 1u;
++          break;
++        }
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_3 = *iop_a_src++;
++          v_header_byte = t_3;
++        }
++        if (v_header_byte < 128u) {
++          if (v_header_byte < 2u) {
++            self->private_impl.f_lzma2_need_prob_reset = true;
++            self->private_impl.f_lzma2_need_properties = true;
++            self->private_impl.f_lzma2_need_dict_reset = false;
++            wuffs_lzma__decoder__initialize_dict(self);
++          } else if ((v_header_byte > 2u) || self->private_impl.f_lzma2_need_dict_reset) {
++            status = wuffs_base__make_status(wuffs_lzma__error__bad_lzma2_header);
++            goto exit;
++          }
++          self->private_impl.f_prev_lzma2_chunk_was_uncompressed = true;
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++            uint32_t t_4;
++            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++              t_4 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
++              iop_a_src += 2;
++            } else {
++              self->private_data.s_do_transform_io.scratch = 0;
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++              while (true) {
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++                uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFFu));
++                *scratch >>= 8;
++                *scratch <<= 8;
++                *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4);
++                if (num_bits_4 == 8) {
++                  t_4 = ((uint32_t)(*scratch >> 48));
++                  break;
++                }
++                num_bits_4 += 8u;
++                *scratch |= ((uint64_t)(num_bits_4));
++              }
++            }
++            v_c32 = t_4;
++          }
++          v_length = (1u + v_c32);
++          while (true) {
++            v_n_copied = wuffs_private_impl__io_writer__limited_copy_u32_from_reader(
++                &iop_a_dst, io2_a_dst,v_length, &iop_a_src, io2_a_src);
++            wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_stashed_pos, ((uint64_t)(v_n_copied)));
++            if (v_length <= v_n_copied) {
++              break;
++            }
++            v_length -= v_n_copied;
++            if (((uint64_t)(io2_a_dst - iop_a_dst)) == 0u) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
++            } else {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11);
++            }
++          }
++          continue;
++        }
++        self->private_impl.f_decoded_length = ((uint64_t)(v_header_byte));
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
++          uint32_t t_5;
++          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++            t_5 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
++            iop_a_src += 2;
++          } else {
++            self->private_data.s_do_transform_io.scratch = 0;
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
++            while (true) {
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++              uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFFu));
++              *scratch >>= 8;
++              *scratch <<= 8;
++              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5);
++              if (num_bits_5 == 8) {
++                t_5 = ((uint32_t)(*scratch >> 48));
++                break;
++              }
++              num_bits_5 += 8u;
++              *scratch |= ((uint64_t)(num_bits_5));
++            }
++          }
++          v_c32 = t_5;
++        }
++        self->private_impl.f_decoded_length = (((self->private_impl.f_decoded_length & 31u) << 16u) + ((uint64_t)((1u + v_c32))));
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
++          uint32_t t_6;
++          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++            t_6 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
++            iop_a_src += 2;
++          } else {
++            self->private_data.s_do_transform_io.scratch = 0;
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
++            while (true) {
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++              uint32_t num_bits_6 = ((uint32_t)(*scratch & 0xFFu));
++              *scratch >>= 8;
++              *scratch <<= 8;
++              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_6);
++              if (num_bits_6 == 8) {
++                t_6 = ((uint32_t)(*scratch >> 48));
++                break;
++              }
++              num_bits_6 += 8u;
++              *scratch |= ((uint64_t)(num_bits_6));
++            }
++          }
++          v_c32 = t_6;
++        }
++        self->private_impl.f_lzma2_encoded_length_want = ((uint64_t)((1u + v_c32)));
++        if (v_header_byte >= 160u) {
++          wuffs_lzma__decoder__initialize_probs(self);
++          self->private_impl.f_lzma2_need_prob_reset = false;
++        }
++        if (v_header_byte >= 192u) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint8_t t_7 = *iop_a_src++;
++            v_prop_byte = t_7;
++          }
++          if (v_prop_byte >= 225u) {
++            status = wuffs_base__make_status(wuffs_lzma__error__bad_lzma2_header);
++            goto exit;
++          }
++          v_lc = ((uint32_t)(((uint8_t)(v_prop_byte % 9u))));
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++          v_prop_byte /= 9u;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++          v_lp = ((uint32_t)(((uint8_t)(v_prop_byte % 5u))));
++          v_pb = ((uint32_t)(((uint8_t)(v_prop_byte / 5u))));
++          if ((v_lc + v_lp) > 4u) {
++            status = wuffs_base__make_status(wuffs_lzma__error__bad_lzma2_header);
++            goto exit;
++          }
++          self->private_impl.f_lc = wuffs_base__u32__min(v_lc, 4u);
++          self->private_impl.f_lp = v_lp;
++          self->private_impl.f_pb = v_pb;
++          self->private_impl.f_lzma2_need_properties = false;
++        }
++        if (v_header_byte >= 224u) {
++          self->private_impl.f_lzma2_need_dict_reset = false;
++          wuffs_lzma__decoder__initialize_dict(self);
++        } else if (self->private_impl.f_prev_lzma2_chunk_was_uncompressed) {
++          if (a_dst) {
++            a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++          }
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(17);
++          status = wuffs_lzma__decoder__update_stashed_bytes(self, a_dst, a_workbuf);
++          if (a_dst) {
++            iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
++          }
++          if (status.repr) {
++            goto suspend;
++          }
++        }
++        self->private_impl.f_prev_lzma2_chunk_was_uncompressed = false;
++        if (self->private_impl.f_lzma2_need_prob_reset || self->private_impl.f_lzma2_need_properties || self->private_impl.f_lzma2_need_dict_reset) {
++          status = wuffs_base__make_status(wuffs_lzma__error__bad_lzma2_header);
++          goto exit;
++        }
++      }
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(18);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_8 = *iop_a_src++;
++        v_c8 = t_8;
++      }
++      if ((v_c8 != 0u) &&  ! self->private_impl.f_allow_non_zero_initial_byte) {
++        status = wuffs_base__make_status(wuffs_lzma__error__bad_code);
++        goto exit;
++      }
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(19);
++        uint32_t t_9;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++          t_9 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++          iop_a_src += 4;
++        } else {
++          self->private_data.s_do_transform_io.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(20);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++            uint32_t num_bits_9 = ((uint32_t)(*scratch & 0xFFu));
++            *scratch >>= 8;
++            *scratch <<= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_9);
++            if (num_bits_9 == 24) {
++              t_9 = ((uint32_t)(*scratch >> 32));
++              break;
++            }
++            num_bits_9 += 8u;
++            *scratch |= ((uint64_t)(num_bits_9));
++          }
++        }
++        self->private_impl.f_stashed_bits = t_9;
++      }
++      if (self->private_impl.f_stashed_bits == 4294967295u) {
++        status = wuffs_base__make_status(wuffs_lzma__error__bad_code);
++        goto exit;
++      }
++      self->private_impl.f_stashed_range = 4294967295u;
++      self->private_impl.f_stashed_pos_end = wuffs_base__u64__sat_add(self->private_impl.f_stashed_pos, self->private_impl.f_decoded_length);
++      if ((self->private_impl.f_stashed_pos_end == 18446744073709551615u) && (self->private_impl.f_decoded_length != 18446744073709551615u)) {
++        status = wuffs_base__make_status(wuffs_lzma__error__unsupported_decoded_length);
++        goto exit;
++      }
++      self->private_impl.f_lzma2_encoded_length_have = 5u;
++      while (((uint64_t)(a_workbuf.len)) < (((uint64_t)(self->private_impl.f_dict_size)) + 273u)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_workbuf);
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(21);
++      }
++      while (true) {
++        v_smark = ((uint64_t)(iop_a_src - io0_a_src));
++        {
++          if (a_dst) {
++            a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++          }
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          wuffs_base__status t_10 = wuffs_lzma__decoder__decode_bitstream(self, a_dst, a_src, a_workbuf);
++          v_status = t_10;
++          if (a_dst) {
++            iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
++          }
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++        }
++        wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_lzma2_encoded_length_have, wuffs_private_impl__io__count_since(v_smark, ((uint64_t)(iop_a_src - io0_a_src))));
++        if (wuffs_base__status__is_ok(&v_status)) {
++          break;
++        }
++        status = v_status;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(22);
++      }
++      if (self->private_impl.f_decoded_length == 18446744073709551615u) {
++        if (self->private_impl.f_stashed_bits != 0u) {
++          status = wuffs_base__make_status(wuffs_lzma__error__bad_bitstream_trailer);
++          goto exit;
++        }
++      } else if (self->private_impl.f_stashed_pos != self->private_impl.f_stashed_pos_end) {
++        status = wuffs_base__make_status(wuffs_lzma__error__bad_decoded_length);
++        goto exit;
++      } else if (self->private_impl.f_stashed_bits != 0u) {
++        if (a_src) {
++          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++        }
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(23);
++        status = wuffs_lzma__decoder__decode_optional_end_of_stream(self, a_src, a_workbuf);
++        if (a_src) {
++          iop_a_src = a_src->data.ptr + a_src->meta.ri;
++        }
++        if (status.repr) {
++          goto suspend;
++        }
++        if (self->private_impl.f_stashed_bits != 0u) {
++          status = wuffs_base__make_status(wuffs_lzma__error__bad_bitstream_trailer);
++          goto exit;
++        }
++      }
++      if ((self->private_impl.f_format_extension & 255u) < 2u) {
++        break;
++      } else if (self->private_impl.f_lzma2_encoded_length_have != self->private_impl.f_lzma2_encoded_length_want) {
++        status = wuffs_base__make_status(wuffs_lzma__error__bad_lzma2_header);
++        goto exit;
++      }
++    }
++
++    ok:
++    self->private_impl.p_do_transform_io = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_do_transform_io.v_header_byte = v_header_byte;
++  self->private_data.s_do_transform_io.v_length = v_length;
++
++  goto exit;
++  exit:
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++  }
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func lzma.decoder.decode_bitstream
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_lzma__decoder__decode_bitstream(
++    wuffs_lzma__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_bitstream;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    self->private_impl.f_end_of_chunk = false;
++    while (true) {
++      v_status = wuffs_lzma__decoder__decode_bitstream_fast(self, a_dst, a_src, a_workbuf);
++      if (wuffs_base__status__is_error(&v_status)) {
++        status = v_status;
++        goto exit;
++      }
++      if (self->private_impl.f_end_of_chunk) {
++        break;
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      status = wuffs_lzma__decoder__decode_bitstream_slow(self, a_dst, a_src, a_workbuf);
++      if (status.repr) {
++        goto suspend;
++      }
++      if (self->private_impl.f_end_of_chunk) {
++        break;
++      }
++    }
++
++    goto ok;
++    ok:
++    self->private_impl.p_decode_bitstream = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_bitstream = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  return status;
++}
++
++// -------- func lzma.decoder.update_stashed_bytes
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_lzma__decoder__update_stashed_bytes(
++    wuffs_lzma__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__slice_u8 a_workbuf) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint32_t v_dist = 0;
++  uint32_t v_which = 0;
++  uint32_t v_adj_dist = 0;
++  uint64_t v_wb_index = 0;
++
++  uint8_t* iop_a_dst = NULL;
++  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
++    }
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_update_stashed_bytes;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++      status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++    v_dist = 1u;
++    v_which = 0u;
++    while (v_which < 2u) {
++      if (((uint64_t)(v_dist)) <= ((uint64_t)(iop_a_dst - io0_a_dst))) {
++        wuffs_private_impl__io_writer__limited_copy_u32_from_history(
++            &iop_a_dst, io0_a_dst, io2_a_dst, 1u, v_dist);
++        if ( ! (iop_a_dst > io1_a_dst)) {
++          status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
++          goto exit;
++        }
++        self->private_impl.f_stashed_bytes[v_which] = iop_a_dst[-1];
++        iop_a_dst--;
++      } else {
++        v_adj_dist = ((uint32_t)((((uint64_t)(v_dist)) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
++        v_wb_index = ((uint64_t)(((uint64_t)(self->private_impl.f_dict_workbuf_index)) - ((uint64_t)(v_adj_dist))));
++        while (v_wb_index >= 9223372036854775808u) {
++          v_wb_index += ((uint64_t)(self->private_impl.f_dict_size));
++        }
++        if (v_wb_index >= ((uint64_t)(a_workbuf.len))) {
++          status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
++          goto exit;
++        }
++        self->private_impl.f_stashed_bytes[v_which] = a_workbuf.ptr[v_wb_index];
++      }
++      v_dist = (1u + self->private_impl.f_stashed_rep0);
++      v_which += 1u;
++    }
++
++    ok:
++    self->private_impl.p_update_stashed_bytes = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_update_stashed_bytes = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func lzma.decoder.decode_optional_end_of_stream
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_lzma__decoder__decode_optional_end_of_stream(
++    wuffs_lzma__decoder* self,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__io_buffer u_w = wuffs_base__empty_io_buffer();
++  wuffs_base__io_buffer* v_w = &u_w;
++  uint8_t* iop_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io0_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io1_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io2_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_optional_end_of_stream;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    self->private_impl.f_stashed_pos_end = 18446744073709551615u;
++    while (true) {
++      {
++        wuffs_base__io_buffer* o_0_v_w = v_w;
++        uint8_t* o_0_iop_v_w = iop_v_w;
++        uint8_t* o_0_io0_v_w = io0_v_w;
++        uint8_t* o_0_io1_v_w = io1_v_w;
++        uint8_t* o_0_io2_v_w = io2_v_w;
++        v_w = wuffs_private_impl__io_writer__set(
++            &u_w,
++            &iop_v_w,
++            &io0_v_w,
++            &io1_v_w,
++            &io2_v_w,
++            wuffs_base__utility__empty_slice_u8(),
++            0u);
++        {
++          wuffs_base__status t_0 = wuffs_lzma__decoder__decode_bitstream_slow(self, v_w, a_src, a_workbuf);
++          v_status = t_0;
++        }
++        v_w = o_0_v_w;
++        iop_v_w = o_0_iop_v_w;
++        io0_v_w = o_0_io0_v_w;
++        io1_v_w = o_0_io1_v_w;
++        io2_v_w = o_0_io2_v_w;
++      }
++      if (wuffs_base__status__is_ok(&v_status)) {
++        break;
++      } else if (v_status.repr == wuffs_base__suspension__short_write) {
++        status = wuffs_base__make_status(wuffs_lzma__error__bad_bitstream_trailer);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++    self->private_impl.f_stashed_pos_end = self->private_impl.f_stashed_pos;
++
++    ok:
++    self->private_impl.p_decode_optional_end_of_stream = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_optional_end_of_stream = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  return status;
++}
++
++// -------- func lzma.decoder.initialize_dict
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_lzma__decoder__initialize_dict(
++    wuffs_lzma__decoder* self) {
++  self->private_impl.f_dict_workbuf_index = 0u;
++  self->private_impl.f_dict_seen = 0u;
++  self->private_impl.f_stashed_bytes[0u] = 0u;
++  self->private_impl.f_stashed_bytes[1u] = 0u;
++  self->private_impl.f_stashed_pos = 0u;
++  return wuffs_base__make_empty_struct();
++}
++
++// -------- func lzma.decoder.initialize_probs
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_lzma__decoder__initialize_probs(
++    wuffs_lzma__decoder* self) {
++  uint32_t v_i = 0;
++  uint32_t v_j = 0;
++
++  v_i = 0u;
++  while (v_i < 192u) {
++    self->private_data.f_probs_ao00[v_i] = 1024u;
++    v_i += 1u;
++  }
++  v_i = 0u;
++  while (v_i < 12u) {
++    self->private_data.f_probs_ao20[v_i] = 1024u;
++    v_i += 1u;
++  }
++  v_i = 0u;
++  while (v_i < 12u) {
++    self->private_data.f_probs_ao40[v_i] = 1024u;
++    v_i += 1u;
++  }
++  v_i = 0u;
++  while (v_i < 192u) {
++    self->private_data.f_probs_ao41[v_i] = 1024u;
++    v_i += 1u;
++  }
++  v_i = 0u;
++  while (v_i < 12u) {
++    self->private_data.f_probs_ao60[v_i] = 1024u;
++    v_i += 1u;
++  }
++  v_i = 0u;
++  while (v_i < 12u) {
++    self->private_data.f_probs_ao63[v_i] = 1024u;
++    v_i += 1u;
++  }
++  v_i = 0u;
++  while (v_i < 16u) {
++    v_j = 0u;
++    while (v_j < 8u) {
++      self->private_data.f_probs_match_len_low[v_i][v_j] = 1024u;
++      v_j += 1u;
++    }
++    v_i += 1u;
++  }
++  v_i = 0u;
++  while (v_i < 16u) {
++    v_j = 0u;
++    while (v_j < 8u) {
++      self->private_data.f_probs_match_len_mid[v_i][v_j] = 1024u;
++      v_j += 1u;
++    }
++    v_i += 1u;
++  }
++  v_i = 0u;
++  while (v_i < 256u) {
++    self->private_data.f_probs_match_len_high[0u][v_i] = 1024u;
++    v_i += 1u;
++  }
++  v_i = 0u;
++  while (v_i < 16u) {
++    v_j = 0u;
++    while (v_j < 8u) {
++      self->private_data.f_probs_longrep_len_low[v_i][v_j] = 1024u;
++      v_j += 1u;
++    }
++    v_i += 1u;
++  }
++  v_i = 0u;
++  while (v_i < 16u) {
++    v_j = 0u;
++    while (v_j < 8u) {
++      self->private_data.f_probs_longrep_len_mid[v_i][v_j] = 1024u;
++      v_j += 1u;
++    }
++    v_i += 1u;
++  }
++  v_i = 0u;
++  while (v_i < 256u) {
++    self->private_data.f_probs_longrep_len_high[0u][v_i] = 1024u;
++    v_i += 1u;
++  }
++  v_i = 0u;
++  while (v_i < 4u) {
++    v_j = 0u;
++    while (v_j < 64u) {
++      self->private_data.f_probs_slot[v_i][v_j] = 1024u;
++      v_j += 1u;
++    }
++    v_i += 1u;
++  }
++  v_i = 0u;
++  while (v_i < 128u) {
++    self->private_data.f_probs_small_dist[v_i] = 1024u;
++    v_i += 1u;
++  }
++  v_i = 0u;
++  while (v_i < 16u) {
++    self->private_data.f_probs_large_dist[v_i] = 1024u;
++    v_i += 1u;
++  }
++  v_i = 0u;
++  while (v_i < 16u) {
++    v_j = 0u;
++    while (v_j < 768u) {
++      self->private_data.f_probs_lit[v_i][v_j] = 1024u;
++      v_j += 1u;
++    }
++    v_i += 1u;
++  }
++  self->private_impl.f_stashed_state = 0u;
++  self->private_impl.f_stashed_rep0 = 0u;
++  self->private_impl.f_stashed_rep1 = 0u;
++  self->private_impl.f_stashed_rep2 = 0u;
++  self->private_impl.f_stashed_rep3 = 0u;
++  return wuffs_base__make_empty_struct();
++}
++
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZMA)
++
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZIP)
++
++// ---------------- Status Codes Implementations
++
++const char wuffs_lzip__error__bad_checksum[] = "#lzip: bad checksum";
++const char wuffs_lzip__error__bad_footer[] = "#lzip: bad footer";
++const char wuffs_lzip__error__bad_header[] = "#lzip: bad header";
++const char wuffs_lzip__error__truncated_input[] = "#lzip: truncated input";
++
++// ---------------- Private Consts
++
++// ---------------- Private Initializer Prototypes
++
++// ---------------- Private Function Prototypes
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_lzip__decoder__do_transform_io(
++    wuffs_lzip__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf);
++
++// ---------------- VTables
++
++const wuffs_base__io_transformer__func_ptrs
++wuffs_lzip__decoder__func_ptrs_for__wuffs_base__io_transformer = {
++  (wuffs_base__optional_u63(*)(const void*))(&wuffs_lzip__decoder__dst_history_retain_length),
++  (uint64_t(*)(const void*,
++      uint32_t))(&wuffs_lzip__decoder__get_quirk),
++  (wuffs_base__status(*)(void*,
++      uint32_t,
++      uint64_t))(&wuffs_lzip__decoder__set_quirk),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__io_buffer*,
++      wuffs_base__io_buffer*,
++      wuffs_base__slice_u8))(&wuffs_lzip__decoder__transform_io),
++  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_lzip__decoder__workbuf_len),
++};
++
++// ---------------- Initializer Implementations
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_lzip__decoder__initialize(
++    wuffs_lzip__decoder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options){
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (sizeof(*self) != sizeof_star_self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  }
++  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
++      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++  }
++
++  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
++    // The whole point of this if-check is to detect an uninitialized *self.
++    // We disable the warning on GCC. Clang-5.0 does not have this warning.
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++#endif
++    if (self->private_impl.magic != 0) {
++      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++    }
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++  } else {
++    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
++      memset(self, 0, sizeof(*self));
++      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
++    } else {
++      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++    }
++  }
++
++  {
++    wuffs_base__status z = wuffs_crc32__ieee_hasher__initialize(
++        &self->private_data.f_crc32, sizeof(self->private_data.f_crc32), WUFFS_VERSION, options);
++    if (z.repr) {
++      return z;
++    }
++  }
++  {
++    wuffs_base__status z = wuffs_lzma__decoder__initialize(
++        &self->private_data.f_lzma, sizeof(self->private_data.f_lzma), WUFFS_VERSION, options);
++    if (z.repr) {
++      return z;
++    }
++  }
++  self->private_impl.magic = WUFFS_BASE__MAGIC;
++  self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
++      wuffs_base__io_transformer__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
++      (const void*)(&wuffs_lzip__decoder__func_ptrs_for__wuffs_base__io_transformer);
++  return wuffs_base__make_status(NULL);
++}
++
++wuffs_lzip__decoder*
++wuffs_lzip__decoder__alloc(void) {
++  wuffs_lzip__decoder* x =
++      (wuffs_lzip__decoder*)(calloc(1, sizeof(wuffs_lzip__decoder)));
++  if (!x) {
++    return NULL;
++  }
++  if (wuffs_lzip__decoder__initialize(
++      x, sizeof(wuffs_lzip__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++    free(x);
++    return NULL;
++  }
++  return x;
++}
++
++size_t
++sizeof__wuffs_lzip__decoder(void) {
++  return sizeof(wuffs_lzip__decoder);
++}
++
++// ---------------- Function Implementations
++
++// -------- func lzip.decoder.get_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_lzip__decoder__get_quirk(
++    const wuffs_lzip__decoder* self,
++    uint32_t a_key) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  if ((a_key == 1u) && self->private_impl.f_ignore_checksum) {
++    return 1u;
++  }
++  return 0u;
++}
++
++// -------- func lzip.decoder.set_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_lzip__decoder__set_quirk(
++    wuffs_lzip__decoder* self,
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++
++  if (a_key == 1u) {
++    self->private_impl.f_ignore_checksum = (a_value > 0u);
++    return wuffs_base__make_status(NULL);
++  }
++  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++}
++
++// -------- func lzip.decoder.dst_history_retain_length
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
++wuffs_lzip__decoder__dst_history_retain_length(
++    const wuffs_lzip__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__make_optional_u63(false, 0u);
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__make_optional_u63(false, 0u);
++  }
++
++  return wuffs_lzma__decoder__dst_history_retain_length(&self->private_data.f_lzma);
++}
++
++// -------- func lzip.decoder.workbuf_len
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_lzip__decoder__workbuf_len(
++    const wuffs_lzip__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++
++  return wuffs_lzma__decoder__workbuf_len(&self->private_data.f_lzma);
++}
++
++// -------- func lzip.decoder.transform_io
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_lzip__decoder__transform_io(
++    wuffs_lzip__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_dst || !a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 1)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  uint32_t coro_susp_point = self->private_impl.p_transform_io;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_lzip__decoder__do_transform_io(self, a_dst, a_src, a_workbuf);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_lzip__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++
++    ok:
++    self->private_impl.p_transform_io = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func lzip.decoder.do_transform_io
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_lzip__decoder__do_transform_io(
++    wuffs_lzip__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_c8 = 0;
++  uint32_t v_c32 = 0;
++  uint64_t v_c64 = 0;
++  uint64_t v_dmark = 0;
++  uint64_t v_smark = 0;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++  uint32_t v_checksum_want = 0;
++  uint32_t v_checksum_have = 0;
++  uint64_t v_size_want = 0;
++
++  uint8_t* iop_a_dst = NULL;
++  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
++    }
++  }
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_do_transform_io;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        uint64_t t_0;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 5)) {
++          t_0 = ((uint64_t)(wuffs_base__peek_u40le__no_bounds_check(iop_a_src)));
++          iop_a_src += 5;
++        } else {
++          self->private_data.s_do_transform_io.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++            uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
++            if (num_bits_0 == 32) {
++              t_0 = ((uint64_t)(*scratch));
++              break;
++            }
++            num_bits_0 += 8u;
++            *scratch |= ((uint64_t)(num_bits_0)) << 56;
++          }
++        }
++        v_c64 = t_0;
++      }
++      if (v_c64 != 5641951820u) {
++        status = wuffs_base__make_status(wuffs_lzip__error__bad_header);
++        goto exit;
++      }
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_1 = *iop_a_src++;
++        v_c8 = t_1;
++      }
++      v_status = wuffs_lzma__decoder__set_quirk(&self->private_data.f_lzma, 1348001793u, (1u | (((uint64_t)(v_c8)) << 8u)));
++      if ( ! wuffs_base__status__is_ok(&v_status)) {
++        if (v_status.repr == wuffs_base__error__bad_argument) {
++          status = wuffs_base__make_status(wuffs_lzip__error__bad_header);
++          goto exit;
++        }
++        status = v_status;
++        if (wuffs_base__status__is_error(&status)) {
++          goto exit;
++        } else if (wuffs_base__status__is_suspension(&status)) {
++          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++          goto exit;
++        }
++        goto ok;
++      }
++      self->private_impl.f_ssize_have = 0u;
++      self->private_impl.f_dsize_have = 0u;
++      wuffs_lzma__decoder__set_quirk(&self->private_data.f_lzma, 1348001792u, 1u);
++      while (true) {
++        v_dmark = ((uint64_t)(iop_a_dst - io0_a_dst));
++        v_smark = ((uint64_t)(iop_a_src - io0_a_src));
++        {
++          if (a_dst) {
++            a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++          }
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          wuffs_base__status t_2 = wuffs_lzma__decoder__transform_io(&self->private_data.f_lzma, a_dst, a_src, a_workbuf);
++          v_status = t_2;
++          if (a_dst) {
++            iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
++          }
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++        }
++        self->private_impl.f_ssize_have += wuffs_private_impl__io__count_since(v_smark, ((uint64_t)(iop_a_src - io0_a_src)));
++        self->private_impl.f_dsize_have += wuffs_private_impl__io__count_since(v_dmark, ((uint64_t)(iop_a_dst - io0_a_dst)));
++        if ( ! self->private_impl.f_ignore_checksum) {
++          wuffs_crc32__ieee_hasher__update(&self->private_data.f_crc32, wuffs_private_impl__io__since(v_dmark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
++        }
++        if (wuffs_base__status__is_ok(&v_status)) {
++          break;
++        }
++        status = v_status;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
++      }
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++        uint32_t t_3;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++          t_3 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++          iop_a_src += 4;
++        } else {
++          self->private_data.s_do_transform_io.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++            uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
++            if (num_bits_3 == 24) {
++              t_3 = ((uint32_t)(*scratch));
++              break;
++            }
++            num_bits_3 += 8u;
++            *scratch |= ((uint64_t)(num_bits_3)) << 56;
++          }
++        }
++        v_checksum_want = t_3;
++      }
++      if ( ! self->private_impl.f_ignore_checksum) {
++        v_checksum_have = wuffs_crc32__ieee_hasher__checksum_u32(&self->private_data.f_crc32);
++        if (v_checksum_have != v_checksum_want) {
++          status = wuffs_base__make_status(wuffs_lzip__error__bad_checksum);
++          goto exit;
++        }
++      }
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++        uint64_t t_4;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
++          t_4 = wuffs_base__peek_u64le__no_bounds_check(iop_a_src);
++          iop_a_src += 8;
++        } else {
++          self->private_data.s_do_transform_io.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++            uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
++            if (num_bits_4 == 56) {
++              t_4 = ((uint64_t)(*scratch));
++              break;
++            }
++            num_bits_4 += 8u;
++            *scratch |= ((uint64_t)(num_bits_4)) << 56;
++          }
++        }
++        v_size_want = t_4;
++      }
++      if (self->private_impl.f_dsize_have != v_size_want) {
++        status = wuffs_base__make_status(wuffs_lzip__error__bad_footer);
++        goto exit;
++      }
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++        uint64_t t_5;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
++          t_5 = wuffs_base__peek_u64le__no_bounds_check(iop_a_src);
++          iop_a_src += 8;
++        } else {
++          self->private_data.s_do_transform_io.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++            uint32_t num_bits_5 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_5;
++            if (num_bits_5 == 56) {
++              t_5 = ((uint64_t)(*scratch));
++              break;
++            }
++            num_bits_5 += 8u;
++            *scratch |= ((uint64_t)(num_bits_5)) << 56;
++          }
++        }
++        v_size_want = t_5;
++      }
++      if ((v_size_want < 26u) || (2251799813685248u < v_size_want)) {
++        status = wuffs_base__make_status(wuffs_lzip__error__bad_footer);
++        goto exit;
++      } else if (self->private_impl.f_ssize_have != (v_size_want - 26u)) {
++        status = wuffs_base__make_status(wuffs_lzip__error__bad_footer);
++        goto exit;
++      }
++      while (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
++        if (a_src && a_src->meta.closed) {
++          goto label__outer__break;
++        }
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11);
++      }
++      v_c32 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++      if (v_c32 != 1346984524u) {
++        break;
++      }
++      wuffs_private_impl__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
++          sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
++      wuffs_private_impl__ignore_status(wuffs_lzma__decoder__initialize(&self->private_data.f_lzma,
++          sizeof (wuffs_lzma__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
++    }
++    label__outer__break:;
++
++    ok:
++    self->private_impl.p_do_transform_io = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++  }
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZIP)
++
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW)
++
++// ---------------- Status Codes Implementations
++
++const char wuffs_lzw__error__bad_code[] = "#lzw: bad code";
++const char wuffs_lzw__error__truncated_input[] = "#lzw: truncated input";
++const char wuffs_lzw__error__internal_error_inconsistent_i_o[] = "#lzw: internal error: inconsistent I/O";
++
++// ---------------- Private Consts
++
++#define WUFFS_LZW__QUIRKS_BASE 1348378624u
++
++// ---------------- Private Initializer Prototypes
++
++// ---------------- Private Function Prototypes
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_lzw__decoder__read_from(
++    wuffs_lzw__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_lzw__decoder__write_to(
++    wuffs_lzw__decoder* self,
++    wuffs_base__io_buffer* a_dst);
++
++// ---------------- VTables
++
++const wuffs_base__io_transformer__func_ptrs
++wuffs_lzw__decoder__func_ptrs_for__wuffs_base__io_transformer = {
++  (wuffs_base__optional_u63(*)(const void*))(&wuffs_lzw__decoder__dst_history_retain_length),
++  (uint64_t(*)(const void*,
++      uint32_t))(&wuffs_lzw__decoder__get_quirk),
++  (wuffs_base__status(*)(void*,
++      uint32_t,
++      uint64_t))(&wuffs_lzw__decoder__set_quirk),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__io_buffer*,
++      wuffs_base__io_buffer*,
++      wuffs_base__slice_u8))(&wuffs_lzw__decoder__transform_io),
++  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_lzw__decoder__workbuf_len),
++};
++
++// ---------------- Initializer Implementations
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_lzw__decoder__initialize(
++    wuffs_lzw__decoder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options){
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (sizeof(*self) != sizeof_star_self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  }
++  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
++      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++  }
++
++  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
++    // The whole point of this if-check is to detect an uninitialized *self.
++    // We disable the warning on GCC. Clang-5.0 does not have this warning.
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++#endif
++    if (self->private_impl.magic != 0) {
++      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++    }
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++  } else {
++    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
++      memset(self, 0, sizeof(*self));
++      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
++    } else {
++      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++    }
++  }
++
++  self->private_impl.magic = WUFFS_BASE__MAGIC;
++  self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
++      wuffs_base__io_transformer__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
++      (const void*)(&wuffs_lzw__decoder__func_ptrs_for__wuffs_base__io_transformer);
++  return wuffs_base__make_status(NULL);
++}
++
++wuffs_lzw__decoder*
++wuffs_lzw__decoder__alloc(void) {
++  wuffs_lzw__decoder* x =
++      (wuffs_lzw__decoder*)(calloc(1, sizeof(wuffs_lzw__decoder)));
++  if (!x) {
++    return NULL;
++  }
++  if (wuffs_lzw__decoder__initialize(
++      x, sizeof(wuffs_lzw__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++    free(x);
++    return NULL;
++  }
++  return x;
++}
++
++size_t
++sizeof__wuffs_lzw__decoder(void) {
++  return sizeof(wuffs_lzw__decoder);
++}
++
++// ---------------- Function Implementations
++
++// -------- func lzw.decoder.get_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_lzw__decoder__get_quirk(
++    const wuffs_lzw__decoder* self,
++    uint32_t a_key) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  if (a_key == 1348378624u) {
++    return ((uint64_t)(self->private_impl.f_pending_literal_width_plus_one));
++  }
++  return 0u;
++}
++
++// -------- func lzw.decoder.set_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_lzw__decoder__set_quirk(
++    wuffs_lzw__decoder* self,
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++
++  if (a_key == 1348378624u) {
++    if (a_value > 9u) {
++      return wuffs_base__make_status(wuffs_base__error__bad_argument);
++    }
++    self->private_impl.f_pending_literal_width_plus_one = ((uint32_t)(a_value));
++    return wuffs_base__make_status(NULL);
++  }
++  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++}
++
++// -------- func lzw.decoder.dst_history_retain_length
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
++wuffs_lzw__decoder__dst_history_retain_length(
++    const wuffs_lzw__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__make_optional_u63(false, 0u);
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__make_optional_u63(false, 0u);
++  }
++
++  return wuffs_base__utility__make_optional_u63(true, 0u);
++}
++
++// -------- func lzw.decoder.workbuf_len
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_lzw__decoder__workbuf_len(
++    const wuffs_lzw__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++
++  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
++}
++
++// -------- func lzw.decoder.transform_io
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_lzw__decoder__transform_io(
++    wuffs_lzw__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_dst || !a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 1)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint32_t v_i = 0;
++
++  uint32_t coro_susp_point = self->private_impl.p_transform_io;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    self->private_impl.f_literal_width = 8u;
++    if (self->private_impl.f_pending_literal_width_plus_one > 0u) {
++      self->private_impl.f_literal_width = (self->private_impl.f_pending_literal_width_plus_one - 1u);
++    }
++    self->private_impl.f_clear_code = (((uint32_t)(1u)) << self->private_impl.f_literal_width);
++    self->private_impl.f_end_code = (self->private_impl.f_clear_code + 1u);
++    self->private_impl.f_save_code = self->private_impl.f_end_code;
++    self->private_impl.f_prev_code = self->private_impl.f_end_code;
++    self->private_impl.f_width = (self->private_impl.f_literal_width + 1u);
++    self->private_impl.f_bits = 0u;
++    self->private_impl.f_n_bits = 0u;
++    self->private_impl.f_output_ri = 0u;
++    self->private_impl.f_output_wi = 0u;
++    v_i = 0u;
++    while (v_i < self->private_impl.f_clear_code) {
++      self->private_data.f_lm1s[v_i] = 0u;
++      self->private_data.f_suffixes[v_i][0u] = ((uint8_t)(v_i));
++      v_i += 1u;
++    }
++    while (true) {
++      wuffs_lzw__decoder__read_from(self, a_src);
++      if (self->private_impl.f_output_wi > 0u) {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        status = wuffs_lzw__decoder__write_to(self, a_dst);
++        if (status.repr) {
++          goto suspend;
++        }
++      }
++      if (self->private_impl.f_read_from_return_value == 0u) {
++        break;
++      } else if (self->private_impl.f_read_from_return_value == 1u) {
++        continue;
++      } else if (self->private_impl.f_read_from_return_value == 2u) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
++      } else if (self->private_impl.f_read_from_return_value == 3u) {
++        status = wuffs_base__make_status(wuffs_lzw__error__truncated_input);
++        goto exit;
++      } else if (self->private_impl.f_read_from_return_value == 4u) {
++        status = wuffs_base__make_status(wuffs_lzw__error__bad_code);
++        goto exit;
++      } else {
++        status = wuffs_base__make_status(wuffs_lzw__error__internal_error_inconsistent_i_o);
++        goto exit;
++      }
++    }
++
++    ok:
++    self->private_impl.p_transform_io = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func lzw.decoder.read_from
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_lzw__decoder__read_from(
++    wuffs_lzw__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  uint32_t v_clear_code = 0;
++  uint32_t v_end_code = 0;
++  uint32_t v_save_code = 0;
++  uint32_t v_prev_code = 0;
++  uint32_t v_width = 0;
++  uint32_t v_bits = 0;
++  uint32_t v_n_bits = 0;
++  uint32_t v_output_wi = 0;
++  uint32_t v_code = 0;
++  uint32_t v_c = 0;
++  uint32_t v_o = 0;
++  uint32_t v_steps = 0;
++  uint8_t v_first_byte = 0;
++  uint16_t v_lm1_b = 0;
++  uint16_t v_lm1_a = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  v_clear_code = self->private_impl.f_clear_code;
++  v_end_code = self->private_impl.f_end_code;
++  v_save_code = self->private_impl.f_save_code;
++  v_prev_code = self->private_impl.f_prev_code;
++  v_width = self->private_impl.f_width;
++  v_bits = self->private_impl.f_bits;
++  v_n_bits = self->private_impl.f_n_bits;
++  v_output_wi = self->private_impl.f_output_wi;
++  while (true) {
++    if (v_n_bits < v_width) {
++      if (((uint64_t)(io2_a_src - iop_a_src)) >= 4u) {
++        v_bits |= ((uint32_t)(wuffs_base__peek_u32le__no_bounds_check(iop_a_src) << v_n_bits));
++        iop_a_src += ((31u - v_n_bits) >> 3u);
++        v_n_bits |= 24u;
++      } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++        if (a_src && a_src->meta.closed) {
++          self->private_impl.f_read_from_return_value = 3u;
++        } else {
++          self->private_impl.f_read_from_return_value = 2u;
++        }
++        break;
++      } else {
++        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
++        iop_a_src += 1u;
++        v_n_bits += 8u;
++        if (v_n_bits >= v_width) {
++        } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++          if (a_src && a_src->meta.closed) {
++            self->private_impl.f_read_from_return_value = 3u;
++          } else {
++            self->private_impl.f_read_from_return_value = 2u;
++          }
++          break;
++        } else {
++          v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
++          iop_a_src += 1u;
++          v_n_bits += 8u;
++          if (v_n_bits < v_width) {
++            self->private_impl.f_read_from_return_value = 5u;
++            break;
++          }
++        }
++      }
++    }
++    v_code = ((v_bits) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U32(v_width));
++    v_bits >>= v_width;
++    v_n_bits -= v_width;
++    if (v_code < v_clear_code) {
++      self->private_data.f_output[v_output_wi] = ((uint8_t)(v_code));
++      v_output_wi = ((v_output_wi + 1u) & 8191u);
++      if (v_save_code <= 4095u) {
++        v_lm1_a = ((uint16_t)(((uint16_t)(self->private_data.f_lm1s[v_prev_code] + 1u)) & 4095u));
++        self->private_data.f_lm1s[v_save_code] = v_lm1_a;
++        if (((uint16_t)(v_lm1_a % 8u)) != 0u) {
++          self->private_impl.f_prefixes[v_save_code] = self->private_impl.f_prefixes[v_prev_code];
++          memcpy(self->private_data.f_suffixes[v_save_code],self->private_data.f_suffixes[v_prev_code], sizeof(self->private_data.f_suffixes[v_save_code]));
++          self->private_data.f_suffixes[v_save_code][((uint16_t)(v_lm1_a % 8u))] = ((uint8_t)(v_code));
++        } else {
++          self->private_impl.f_prefixes[v_save_code] = ((uint16_t)(v_prev_code));
++          self->private_data.f_suffixes[v_save_code][0u] = ((uint8_t)(v_code));
++        }
++        v_save_code += 1u;
++        if (v_width < 12u) {
++          v_width += (1u & (v_save_code >> v_width));
++        }
++        v_prev_code = v_code;
++      }
++    } else if (v_code <= v_end_code) {
++      if (v_code == v_end_code) {
++        self->private_impl.f_read_from_return_value = 0u;
++        break;
++      }
++      v_save_code = v_end_code;
++      v_prev_code = v_end_code;
++      v_width = (self->private_impl.f_literal_width + 1u);
++    } else if (v_code <= v_save_code) {
++      v_c = v_code;
++      if (v_code == v_save_code) {
++        v_c = v_prev_code;
++      }
++      v_o = ((v_output_wi + (((uint32_t)(self->private_data.f_lm1s[v_c])) & 4294967288u)) & 8191u);
++      v_output_wi = ((v_output_wi + 1u + ((uint32_t)(self->private_data.f_lm1s[v_c]))) & 8191u);
++      v_steps = (((uint32_t)(self->private_data.f_lm1s[v_c])) >> 3u);
++      while (true) {
++        memcpy((self->private_data.f_output)+(v_o), (self->private_data.f_suffixes[v_c]), 8u);
++        if (v_steps <= 0u) {
++          break;
++        }
++        v_steps -= 1u;
++        v_o = (((uint32_t)(v_o - 8u)) & 8191u);
++        v_c = ((uint32_t)(self->private_impl.f_prefixes[v_c]));
++      }
++      v_first_byte = self->private_data.f_suffixes[v_c][0u];
++      if (v_code == v_save_code) {
++        self->private_data.f_output[v_output_wi] = v_first_byte;
++        v_output_wi = ((v_output_wi + 1u) & 8191u);
++      }
++      if (v_save_code <= 4095u) {
++        v_lm1_b = ((uint16_t)(((uint16_t)(self->private_data.f_lm1s[v_prev_code] + 1u)) & 4095u));
++        self->private_data.f_lm1s[v_save_code] = v_lm1_b;
++        if (((uint16_t)(v_lm1_b % 8u)) != 0u) {
++          self->private_impl.f_prefixes[v_save_code] = self->private_impl.f_prefixes[v_prev_code];
++          memcpy(self->private_data.f_suffixes[v_save_code],self->private_data.f_suffixes[v_prev_code], sizeof(self->private_data.f_suffixes[v_save_code]));
++          self->private_data.f_suffixes[v_save_code][((uint16_t)(v_lm1_b % 8u))] = v_first_byte;
++        } else {
++          self->private_impl.f_prefixes[v_save_code] = ((uint16_t)(v_prev_code));
++          self->private_data.f_suffixes[v_save_code][0u] = ((uint8_t)(v_first_byte));
++        }
++        v_save_code += 1u;
++        if (v_width < 12u) {
++          v_width += (1u & (v_save_code >> v_width));
++        }
++        v_prev_code = v_code;
++      }
++    } else {
++      self->private_impl.f_read_from_return_value = 4u;
++      break;
++    }
++    if (v_output_wi > 4095u) {
++      self->private_impl.f_read_from_return_value = 1u;
++      break;
++    }
++  }
++  if (self->private_impl.f_read_from_return_value != 2u) {
++    while (v_n_bits >= 8u) {
++      v_n_bits -= 8u;
++      if (iop_a_src > io1_a_src) {
++        iop_a_src--;
++      } else {
++        self->private_impl.f_read_from_return_value = 5u;
++        break;
++      }
++    }
++  }
++  self->private_impl.f_save_code = v_save_code;
++  self->private_impl.f_prev_code = v_prev_code;
++  self->private_impl.f_width = v_width;
++  self->private_impl.f_bits = v_bits;
++  self->private_impl.f_n_bits = v_n_bits;
++  self->private_impl.f_output_wi = v_output_wi;
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return wuffs_base__make_empty_struct();
++}
++
++// -------- func lzw.decoder.write_to
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_lzw__decoder__write_to(
++    wuffs_lzw__decoder* self,
++    wuffs_base__io_buffer* a_dst) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__slice_u8 v_s = {0};
++  uint64_t v_n = 0;
++
++  uint8_t* iop_a_dst = NULL;
++  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
++    }
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_write_to;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (self->private_impl.f_output_wi > 0u) {
++      if (self->private_impl.f_output_ri > self->private_impl.f_output_wi) {
++        status = wuffs_base__make_status(wuffs_lzw__error__internal_error_inconsistent_i_o);
++        goto exit;
++      }
++      v_s = wuffs_base__make_slice_u8_ij(self->private_data.f_output,
++          self->private_impl.f_output_ri,
++          self->private_impl.f_output_wi);
++      v_n = wuffs_private_impl__io_writer__copy_from_slice(&iop_a_dst, io2_a_dst,v_s);
++      if (v_n == ((uint64_t)(v_s.len))) {
++        self->private_impl.f_output_ri = 0u;
++        self->private_impl.f_output_wi = 0u;
++        status = wuffs_base__make_status(NULL);
++        goto ok;
++      }
++      self->private_impl.f_output_ri = (((uint32_t)(self->private_impl.f_output_ri + ((uint32_t)(v_n)))) & 8191u);
++      status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++
++    ok:
++    self->private_impl.p_write_to = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_write_to = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func lzw.decoder.flush
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__slice_u8
++wuffs_lzw__decoder__flush(
++    wuffs_lzw__decoder* self) {
++  if (!self) {
++    return wuffs_base__empty_slice_u8();
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__empty_slice_u8();
++  }
++
++  uint32_t v_ri = 0;
++  uint32_t v_wi = 0;
++
++  v_ri = self->private_impl.f_output_ri;
++  v_wi = self->private_impl.f_output_wi;
++  self->private_impl.f_output_ri = 0u;
++  self->private_impl.f_output_wi = 0u;
++  if (v_ri <= v_wi) {
++    return wuffs_base__make_slice_u8_ij(self->private_data.f_output, v_ri, v_wi);
++  }
++  return wuffs_base__make_slice_u8(self->private_data.f_output, 0);
++}
++
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW)
++
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM)
++
++// ---------------- Status Codes Implementations
++
++const char wuffs_netpbm__error__bad_header[] = "#netpbm: bad header";
++const char wuffs_netpbm__error__truncated_input[] = "#netpbm: truncated input";
++const char wuffs_netpbm__error__unsupported_netpbm_file[] = "#netpbm: unsupported Netpbm file";
++const char wuffs_netpbm__note__internal_note_short_read[] = "@netpbm: internal note: short read";
++
++// ---------------- Private Consts
++
++// ---------------- Private Initializer Prototypes
++
++// ---------------- Private Function Prototypes
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_netpbm__decoder__do_decode_image_config(
++    wuffs_netpbm__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_netpbm__decoder__do_decode_frame_config(
++    wuffs_netpbm__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_netpbm__decoder__do_decode_frame(
++    wuffs_netpbm__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_netpbm__decoder__swizzle(
++    wuffs_netpbm__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++// ---------------- VTables
++
++const wuffs_base__image_decoder__func_ptrs
++wuffs_netpbm__decoder__func_ptrs_for__wuffs_base__image_decoder = {
++  (wuffs_base__status(*)(void*,
++      wuffs_base__pixel_buffer*,
++      wuffs_base__io_buffer*,
++      wuffs_base__pixel_blend,
++      wuffs_base__slice_u8,
++      wuffs_base__decode_frame_options*))(&wuffs_netpbm__decoder__decode_frame),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__frame_config*,
++      wuffs_base__io_buffer*))(&wuffs_netpbm__decoder__decode_frame_config),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__image_config*,
++      wuffs_base__io_buffer*))(&wuffs_netpbm__decoder__decode_image_config),
++  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_netpbm__decoder__frame_dirty_rect),
++  (uint64_t(*)(const void*,
++      uint32_t))(&wuffs_netpbm__decoder__get_quirk),
++  (uint32_t(*)(const void*))(&wuffs_netpbm__decoder__num_animation_loops),
++  (uint64_t(*)(const void*))(&wuffs_netpbm__decoder__num_decoded_frame_configs),
++  (uint64_t(*)(const void*))(&wuffs_netpbm__decoder__num_decoded_frames),
++  (wuffs_base__status(*)(void*,
++      uint64_t,
++      uint64_t))(&wuffs_netpbm__decoder__restart_frame),
++  (wuffs_base__status(*)(void*,
++      uint32_t,
++      uint64_t))(&wuffs_netpbm__decoder__set_quirk),
++  (wuffs_base__empty_struct(*)(void*,
++      uint32_t,
++      bool))(&wuffs_netpbm__decoder__set_report_metadata),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__io_buffer*,
++      wuffs_base__more_information*,
++      wuffs_base__io_buffer*))(&wuffs_netpbm__decoder__tell_me_more),
++  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_netpbm__decoder__workbuf_len),
++};
++
++// ---------------- Initializer Implementations
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_netpbm__decoder__initialize(
++    wuffs_netpbm__decoder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options){
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (sizeof(*self) != sizeof_star_self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  }
++  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
++      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++  }
++
++  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
++    // The whole point of this if-check is to detect an uninitialized *self.
++    // We disable the warning on GCC. Clang-5.0 does not have this warning.
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++#endif
++    if (self->private_impl.magic != 0) {
++      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++    }
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++  } else {
++    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
++      memset(self, 0, sizeof(*self));
++      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
++    } else {
++      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++    }
++  }
++
++  self->private_impl.magic = WUFFS_BASE__MAGIC;
++  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
++      wuffs_base__image_decoder__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
++      (const void*)(&wuffs_netpbm__decoder__func_ptrs_for__wuffs_base__image_decoder);
++  return wuffs_base__make_status(NULL);
++}
++
++wuffs_netpbm__decoder*
++wuffs_netpbm__decoder__alloc(void) {
++  wuffs_netpbm__decoder* x =
++      (wuffs_netpbm__decoder*)(calloc(1, sizeof(wuffs_netpbm__decoder)));
++  if (!x) {
++    return NULL;
++  }
++  if (wuffs_netpbm__decoder__initialize(
++      x, sizeof(wuffs_netpbm__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++    free(x);
++    return NULL;
++  }
++  return x;
++}
++
++size_t
++sizeof__wuffs_netpbm__decoder(void) {
++  return sizeof(wuffs_netpbm__decoder);
++}
++
++// ---------------- Function Implementations
++
++// -------- func netpbm.decoder.get_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_netpbm__decoder__get_quirk(
++    const wuffs_netpbm__decoder* self,
++    uint32_t a_key) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  return 0u;
++}
++
++// -------- func netpbm.decoder.set_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_netpbm__decoder__set_quirk(
++    wuffs_netpbm__decoder* self,
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++
++  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++}
++
++// -------- func netpbm.decoder.decode_image_config
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_netpbm__decoder__decode_image_config(
++    wuffs_netpbm__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 1)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_image_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_netpbm__decoder__do_decode_image_config(self, a_dst, a_src);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_netpbm__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++
++    ok:
++    self->private_impl.p_decode_image_config = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func netpbm.decoder.do_decode_image_config
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_netpbm__decoder__do_decode_image_config(
++    wuffs_netpbm__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_c8 = 0;
++  uint32_t v_n = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_call_sequence != 0u) {
++      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++      goto exit;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_0 = *iop_a_src++;
++      v_c8 = t_0;
++    }
++    if (v_c8 != 80u) {
++      status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
++      goto exit;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_1 = *iop_a_src++;
++      v_c8 = t_1;
++    }
++    if ((v_c8 < 49u) || (55u < v_c8)) {
++      status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
++      goto exit;
++    } else if (v_c8 == 53u) {
++      self->private_impl.f_pixfmt = 536870920u;
++    } else if (v_c8 == 54u) {
++      self->private_impl.f_pixfmt = 2684356744u;
++    } else {
++      status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file);
++      goto exit;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_2 = *iop_a_src++;
++      v_c8 = t_2;
++    }
++    if (v_c8 != 10u) {
++      status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
++      goto exit;
++    }
++    while (true) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_3 = *iop_a_src++;
++        v_c8 = t_3;
++      }
++      if ((v_c8 == 32u) || (v_c8 == 9u)) {
++        continue;
++      } else if (v_c8 == 35u) {
++        while (true) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint8_t t_4 = *iop_a_src++;
++            v_c8 = t_4;
++          }
++          if (v_c8 == 10u) {
++            break;
++          }
++        }
++        continue;
++      } else if ((v_c8 < 48u) || (57u < v_c8)) {
++        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
++        goto exit;
++      }
++      self->private_impl.f_width = ((uint32_t)(((uint8_t)(v_c8 - 48u))));
++      break;
++    }
++    while (true) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_5 = *iop_a_src++;
++        v_c8 = t_5;
++      }
++      if ((v_c8 == 32u) || (v_c8 == 9u)) {
++        break;
++      } else if ((v_c8 < 48u) || (57u < v_c8)) {
++        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
++        goto exit;
++      }
++      v_n = ((10u * self->private_impl.f_width) + ((uint32_t)(((uint8_t)(v_c8 - 48u)))));
++      if (v_n > 16777215u) {
++        status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file);
++        goto exit;
++      }
++      self->private_impl.f_width = v_n;
++    }
++    while (true) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_6 = *iop_a_src++;
++        v_c8 = t_6;
++      }
++      if ((v_c8 == 32u) || (v_c8 == 9u)) {
++        continue;
++      } else if (v_c8 == 35u) {
++        while (true) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint8_t t_7 = *iop_a_src++;
++            v_c8 = t_7;
++          }
++          if (v_c8 == 10u) {
++            break;
++          }
++        }
++        continue;
++      } else if ((v_c8 < 48u) || (57u < v_c8)) {
++        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
++        goto exit;
++      }
++      self->private_impl.f_height = ((uint32_t)(((uint8_t)(v_c8 - 48u))));
++      break;
++    }
++    while (true) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_8 = *iop_a_src++;
++        v_c8 = t_8;
++      }
++      if ((v_c8 == 32u) || (v_c8 == 9u) || (v_c8 == 13u)) {
++        continue;
++      } else if (v_c8 == 10u) {
++        break;
++      } else if ((v_c8 < 48u) || (57u < v_c8)) {
++        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
++        goto exit;
++      }
++      v_n = ((10u * self->private_impl.f_height) + ((uint32_t)(((uint8_t)(v_c8 - 48u)))));
++      if (v_n > 16777215u) {
++        status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file);
++        goto exit;
++      }
++      self->private_impl.f_height = v_n;
++    }
++    while (true) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_9 = *iop_a_src++;
++        v_c8 = t_9;
++      }
++      if ((v_c8 == 32u) || (v_c8 == 9u)) {
++        continue;
++      } else if (v_c8 == 35u) {
++        while (true) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint8_t t_10 = *iop_a_src++;
++            v_c8 = t_10;
++          }
++          if (v_c8 == 10u) {
++            break;
++          }
++        }
++        continue;
++      } else if ((v_c8 < 48u) || (57u < v_c8)) {
++        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
++        goto exit;
++      }
++      self->private_impl.f_max_value = ((uint32_t)(((uint8_t)(v_c8 - 48u))));
++      break;
++    }
++    while (true) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_11 = *iop_a_src++;
++        v_c8 = t_11;
++      }
++      if ((v_c8 == 32u) || (v_c8 == 9u) || (v_c8 == 13u)) {
++        continue;
++      } else if (v_c8 == 10u) {
++        break;
++      } else if ((v_c8 < 48u) || (57u < v_c8)) {
++        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
++        goto exit;
++      }
++      v_n = ((10u * self->private_impl.f_max_value) + ((uint32_t)(((uint8_t)(v_c8 - 48u)))));
++      if (v_n > 16777215u) {
++        status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file);
++        goto exit;
++      }
++      self->private_impl.f_max_value = v_n;
++    }
++    if (self->private_impl.f_max_value != 255u) {
++      status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file);
++      goto exit;
++    }
++    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
++    if (a_dst != NULL) {
++      wuffs_base__image_config__set(
++          a_dst,
++          self->private_impl.f_pixfmt,
++          0u,
++          self->private_impl.f_width,
++          self->private_impl.f_height,
++          self->private_impl.f_frame_config_io_position,
++          false);
++    }
++    self->private_impl.f_call_sequence = 32u;
++
++    goto ok;
++    ok:
++    self->private_impl.p_do_decode_image_config = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func netpbm.decoder.decode_frame_config
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_netpbm__decoder__decode_frame_config(
++    wuffs_netpbm__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 2)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_netpbm__decoder__do_decode_frame_config(self, a_dst, a_src);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_netpbm__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++
++    ok:
++    self->private_impl.p_decode_frame_config = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func netpbm.decoder.do_decode_frame_config
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_netpbm__decoder__do_decode_frame_config(
++    wuffs_netpbm__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_call_sequence == 32u) {
++    } else if (self->private_impl.f_call_sequence < 32u) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      status = wuffs_netpbm__decoder__do_decode_image_config(self, NULL, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++    } else if (self->private_impl.f_call_sequence == 40u) {
++      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
++        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
++        goto exit;
++      }
++    } else if (self->private_impl.f_call_sequence == 64u) {
++      self->private_impl.f_call_sequence = 96u;
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
++    } else {
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
++    }
++    if (a_dst != NULL) {
++      wuffs_base__frame_config__set(
++          a_dst,
++          wuffs_base__utility__make_rect_ie_u32(
++          0u,
++          0u,
++          self->private_impl.f_width,
++          self->private_impl.f_height),
++          ((wuffs_base__flicks)(0u)),
++          0u,
++          self->private_impl.f_frame_config_io_position,
++          0u,
++          false,
++          false,
++          0u);
++    }
++    self->private_impl.f_call_sequence = 64u;
++
++    ok:
++    self->private_impl.p_do_decode_frame_config = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func netpbm.decoder.decode_frame
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_netpbm__decoder__decode_frame(
++    wuffs_netpbm__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_dst || !a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 3)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_frame;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_netpbm__decoder__do_decode_frame(self,
++            a_dst,
++            a_src,
++            a_blend,
++            a_workbuf,
++            a_opts);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_netpbm__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++
++    ok:
++    self->private_impl.p_decode_frame = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func netpbm.decoder.do_decode_frame
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_netpbm__decoder__do_decode_frame(
++    wuffs_netpbm__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_call_sequence == 64u) {
++    } else if (self->private_impl.f_call_sequence < 64u) {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      status = wuffs_netpbm__decoder__do_decode_frame_config(self, NULL, a_src);
++      if (status.repr) {
++        goto suspend;
++      }
++    } else {
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
++    }
++    self->private_impl.f_dst_x = 0u;
++    self->private_impl.f_dst_y = 0u;
++    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
++        wuffs_base__pixel_buffer__pixel_format(a_dst),
++        wuffs_base__pixel_buffer__palette(a_dst),
++        wuffs_base__utility__make_pixel_format(self->private_impl.f_pixfmt),
++        wuffs_base__utility__empty_slice_u8(),
++        a_blend);
++    if ( ! wuffs_base__status__is_ok(&v_status)) {
++      status = v_status;
++      if (wuffs_base__status__is_error(&status)) {
++        goto exit;
++      } else if (wuffs_base__status__is_suspension(&status)) {
++        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++        goto exit;
++      }
++      goto ok;
++    }
++    while (true) {
++      v_status = wuffs_netpbm__decoder__swizzle(self, a_dst, a_src);
++      if (wuffs_base__status__is_ok(&v_status)) {
++        break;
++      } else if (v_status.repr != wuffs_netpbm__note__internal_note_short_read) {
++        status = v_status;
++        if (wuffs_base__status__is_error(&status)) {
++          goto exit;
++        } else if (wuffs_base__status__is_suspension(&status)) {
++          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++          goto exit;
++        }
++        goto ok;
++      }
++      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
++    }
++    self->private_impl.f_call_sequence = 96u;
++
++    ok:
++    self->private_impl.p_do_decode_frame = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  return status;
++}
++
++// -------- func netpbm.decoder.swizzle
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_netpbm__decoder__swizzle(
++    wuffs_netpbm__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__pixel_format v_dst_pixfmt = {0};
++  uint32_t v_dst_bits_per_pixel = 0;
++  uint32_t v_dst_bytes_per_pixel = 0;
++  uint64_t v_dst_bytes_per_row = 0;
++  uint32_t v_src_bytes_per_pixel = 0;
++  wuffs_base__table_u8 v_tab = {0};
++  wuffs_base__slice_u8 v_dst = {0};
++  uint64_t v_i = 0;
++  uint64_t v_j = 0;
++  uint64_t v_n = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
++  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
++  if ((v_dst_bits_per_pixel & 7u) != 0u) {
++    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
++    goto exit;
++  }
++  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
++  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
++  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
++  while (true) {
++    if (self->private_impl.f_dst_x == self->private_impl.f_width) {
++      self->private_impl.f_dst_x = 0u;
++      self->private_impl.f_dst_y += 1u;
++      if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
++        break;
++      }
++    }
++    v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
++    if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
++      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
++    }
++    v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
++    if (v_i >= ((uint64_t)(v_dst.len))) {
++      v_src_bytes_per_pixel = 1u;
++      if (self->private_impl.f_pixfmt == 2684356744u) {
++        v_src_bytes_per_pixel = 3u;
++      }
++      v_n = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(v_src_bytes_per_pixel)));
++      v_n = wuffs_base__u64__min(v_n, ((uint64_t)(((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x)))));
++      v_j = v_n;
++      while (v_j >= 8u) {
++        if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 8u)))) {
++          iop_a_src += (v_src_bytes_per_pixel * 8u);
++        }
++        v_j -= 8u;
++      }
++      while (v_j > 0u) {
++        if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 1u)))) {
++          iop_a_src += (v_src_bytes_per_pixel * 1u);
++        }
++        v_j -= 1u;
++      }
++    } else {
++      v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
++          &self->private_impl.f_swizzler,
++          wuffs_base__slice_u8__subslice_i(v_dst, v_i),
++          wuffs_base__pixel_buffer__palette(a_dst),
++          &iop_a_src,
++          io2_a_src);
++    }
++    if (v_n == 0u) {
++      status = wuffs_base__make_status(wuffs_netpbm__note__internal_note_short_read);
++      goto ok;
++    }
++    wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
++  }
++  status = wuffs_base__make_status(NULL);
++  goto ok;
++
++  ok:
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func netpbm.decoder.frame_dirty_rect
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
++wuffs_netpbm__decoder__frame_dirty_rect(
++    const wuffs_netpbm__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_rect_ie_u32();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_rect_ie_u32();
++  }
++
++  return wuffs_base__utility__make_rect_ie_u32(
++      0u,
++      0u,
++      self->private_impl.f_width,
++      self->private_impl.f_height);
++}
++
++// -------- func netpbm.decoder.num_animation_loops
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_netpbm__decoder__num_animation_loops(
++    const wuffs_netpbm__decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  return 0u;
++}
++
++// -------- func netpbm.decoder.num_decoded_frame_configs
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_netpbm__decoder__num_decoded_frame_configs(
++    const wuffs_netpbm__decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  if (self->private_impl.f_call_sequence > 32u) {
++    return 1u;
++  }
++  return 0u;
++}
++
++// -------- func netpbm.decoder.num_decoded_frames
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_netpbm__decoder__num_decoded_frames(
++    const wuffs_netpbm__decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  if (self->private_impl.f_call_sequence > 64u) {
++    return 1u;
++  }
++  return 0u;
++}
++
++// -------- func netpbm.decoder.restart_frame
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_netpbm__decoder__restart_frame(
++    wuffs_netpbm__decoder* self,
++    uint64_t a_index,
++    uint64_t a_io_position) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++
++  if (self->private_impl.f_call_sequence < 32u) {
++    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++  }
++  if ((a_index != 0u) || (a_io_position != self->private_impl.f_frame_config_io_position)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  self->private_impl.f_call_sequence = 40u;
++  return wuffs_base__make_status(NULL);
++}
++
++// -------- func netpbm.decoder.set_report_metadata
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_netpbm__decoder__set_report_metadata(
++    wuffs_netpbm__decoder* self,
++    uint32_t a_fourcc,
++    bool a_report) {
++  return wuffs_base__make_empty_struct();
++}
++
++// -------- func netpbm.decoder.tell_me_more
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_netpbm__decoder__tell_me_more(
++    wuffs_netpbm__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__more_information* a_minfo,
++    wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_dst || !a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 4)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  status = wuffs_base__make_status(wuffs_base__error__no_more_information);
++  goto exit;
++
++  goto ok;
++  ok:
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func netpbm.decoder.workbuf_len
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_netpbm__decoder__workbuf_len(
++    const wuffs_netpbm__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++
++  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
++}
++
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM)
++
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE)
++
++// ---------------- Status Codes Implementations
++
++const char wuffs_nie__error__bad_header[] = "#nie: bad header";
++const char wuffs_nie__error__truncated_input[] = "#nie: truncated input";
++const char wuffs_nie__error__unsupported_nie_file[] = "#nie: unsupported NIE file";
++const char wuffs_nie__note__internal_note_short_read[] = "@nie: internal note: short read";
++
++// ---------------- Private Consts
++
++// ---------------- Private Initializer Prototypes
++
++// ---------------- Private Function Prototypes
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_nie__decoder__do_decode_image_config(
++    wuffs_nie__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_nie__decoder__do_decode_frame_config(
++    wuffs_nie__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_nie__decoder__do_decode_frame(
++    wuffs_nie__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_nie__decoder__swizzle(
++    wuffs_nie__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++// ---------------- VTables
++
++const wuffs_base__image_decoder__func_ptrs
++wuffs_nie__decoder__func_ptrs_for__wuffs_base__image_decoder = {
++  (wuffs_base__status(*)(void*,
++      wuffs_base__pixel_buffer*,
++      wuffs_base__io_buffer*,
++      wuffs_base__pixel_blend,
++      wuffs_base__slice_u8,
++      wuffs_base__decode_frame_options*))(&wuffs_nie__decoder__decode_frame),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__frame_config*,
++      wuffs_base__io_buffer*))(&wuffs_nie__decoder__decode_frame_config),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__image_config*,
++      wuffs_base__io_buffer*))(&wuffs_nie__decoder__decode_image_config),
++  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_nie__decoder__frame_dirty_rect),
++  (uint64_t(*)(const void*,
++      uint32_t))(&wuffs_nie__decoder__get_quirk),
++  (uint32_t(*)(const void*))(&wuffs_nie__decoder__num_animation_loops),
++  (uint64_t(*)(const void*))(&wuffs_nie__decoder__num_decoded_frame_configs),
++  (uint64_t(*)(const void*))(&wuffs_nie__decoder__num_decoded_frames),
++  (wuffs_base__status(*)(void*,
++      uint64_t,
++      uint64_t))(&wuffs_nie__decoder__restart_frame),
++  (wuffs_base__status(*)(void*,
++      uint32_t,
++      uint64_t))(&wuffs_nie__decoder__set_quirk),
++  (wuffs_base__empty_struct(*)(void*,
++      uint32_t,
++      bool))(&wuffs_nie__decoder__set_report_metadata),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__io_buffer*,
++      wuffs_base__more_information*,
++      wuffs_base__io_buffer*))(&wuffs_nie__decoder__tell_me_more),
++  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_nie__decoder__workbuf_len),
++};
++
++// ---------------- Initializer Implementations
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_nie__decoder__initialize(
++    wuffs_nie__decoder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options){
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (sizeof(*self) != sizeof_star_self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  }
++  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
++      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++  }
++
++  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
++    // The whole point of this if-check is to detect an uninitialized *self.
++    // We disable the warning on GCC. Clang-5.0 does not have this warning.
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++#endif
++    if (self->private_impl.magic != 0) {
++      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++    }
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++  } else {
++    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
++      memset(self, 0, sizeof(*self));
++      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
++    } else {
++      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++    }
++  }
++
++  self->private_impl.magic = WUFFS_BASE__MAGIC;
++  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
++      wuffs_base__image_decoder__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
++      (const void*)(&wuffs_nie__decoder__func_ptrs_for__wuffs_base__image_decoder);
++  return wuffs_base__make_status(NULL);
++}
++
++wuffs_nie__decoder*
++wuffs_nie__decoder__alloc(void) {
++  wuffs_nie__decoder* x =
++      (wuffs_nie__decoder*)(calloc(1, sizeof(wuffs_nie__decoder)));
++  if (!x) {
++    return NULL;
++  }
++  if (wuffs_nie__decoder__initialize(
++      x, sizeof(wuffs_nie__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++    free(x);
++    return NULL;
++  }
++  return x;
++}
++
++size_t
++sizeof__wuffs_nie__decoder(void) {
++  return sizeof(wuffs_nie__decoder);
++}
++
++// ---------------- Function Implementations
++
++// -------- func nie.decoder.get_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_nie__decoder__get_quirk(
++    const wuffs_nie__decoder* self,
++    uint32_t a_key) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  return 0u;
++}
++
++// -------- func nie.decoder.set_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_nie__decoder__set_quirk(
++    wuffs_nie__decoder* self,
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++
++  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++}
++
++// -------- func nie.decoder.decode_image_config
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_nie__decoder__decode_image_config(
++    wuffs_nie__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 1)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_image_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_nie__decoder__do_decode_image_config(self, a_dst, a_src);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_nie__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++
++    ok:
++    self->private_impl.p_decode_image_config = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func nie.decoder.do_decode_image_config
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_nie__decoder__do_decode_image_config(
++    wuffs_nie__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint32_t v_a = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_call_sequence != 0u) {
++      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++      goto exit;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      uint32_t t_0;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_do_decode_image_config.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
++          *scratch <<= 8;
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
++          if (num_bits_0 == 24) {
++            t_0 = ((uint32_t)(*scratch));
++            break;
++          }
++          num_bits_0 += 8u;
++          *scratch |= ((uint64_t)(num_bits_0)) << 56;
++        }
++      }
++      v_a = t_0;
++    }
++    if (v_a != 1169146734u) {
++      status = wuffs_base__make_status(wuffs_nie__error__bad_header);
++      goto exit;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++      uint32_t t_1;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_do_decode_image_config.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
++          *scratch <<= 8;
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
++          if (num_bits_1 == 24) {
++            t_1 = ((uint32_t)(*scratch));
++            break;
++          }
++          num_bits_1 += 8u;
++          *scratch |= ((uint64_t)(num_bits_1)) << 56;
++        }
++      }
++      v_a = t_1;
++    }
++    if (v_a == 879649535u) {
++      self->private_impl.f_pixfmt = 2164295816u;
++    } else if (v_a == 946758399u) {
++      self->private_impl.f_pixfmt = 2164308923u;
++    } else if (v_a == 879780607u) {
++      status = wuffs_base__make_status(wuffs_nie__error__unsupported_nie_file);
++      goto exit;
++    } else if (v_a == 946889471u) {
++      status = wuffs_base__make_status(wuffs_nie__error__unsupported_nie_file);
++      goto exit;
++    } else {
++      status = wuffs_base__make_status(wuffs_nie__error__bad_header);
++      goto exit;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++      uint32_t t_2;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_do_decode_image_config.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++          uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
++          *scratch <<= 8;
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
++          if (num_bits_2 == 24) {
++            t_2 = ((uint32_t)(*scratch));
++            break;
++          }
++          num_bits_2 += 8u;
++          *scratch |= ((uint64_t)(num_bits_2)) << 56;
++        }
++      }
++      v_a = t_2;
++    }
++    if (v_a > 2147483647u) {
++      status = wuffs_base__make_status(wuffs_nie__error__bad_header);
++      goto exit;
++    } else if (v_a > 16777215u) {
++      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
++      goto exit;
++    }
++    self->private_impl.f_width = v_a;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++      uint32_t t_3;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_3 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_do_decode_image_config.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++          uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
++          *scratch <<= 8;
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
++          if (num_bits_3 == 24) {
++            t_3 = ((uint32_t)(*scratch));
++            break;
++          }
++          num_bits_3 += 8u;
++          *scratch |= ((uint64_t)(num_bits_3)) << 56;
++        }
++      }
++      v_a = t_3;
++    }
++    if (v_a > 2147483647u) {
++      status = wuffs_base__make_status(wuffs_nie__error__bad_header);
++      goto exit;
++    } else if (v_a > 16777215u) {
++      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
++      goto exit;
++    }
++    self->private_impl.f_height = v_a;
++    if (a_dst != NULL) {
++      wuffs_base__image_config__set(
++          a_dst,
++          self->private_impl.f_pixfmt,
++          0u,
++          self->private_impl.f_width,
++          self->private_impl.f_height,
++          16u,
++          false);
++    }
++    self->private_impl.f_call_sequence = 32u;
++
++    goto ok;
++    ok:
++    self->private_impl.p_do_decode_image_config = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func nie.decoder.decode_frame_config
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_nie__decoder__decode_frame_config(
++    wuffs_nie__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 2)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_nie__decoder__do_decode_frame_config(self, a_dst, a_src);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_nie__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++
++    ok:
++    self->private_impl.p_decode_frame_config = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func nie.decoder.do_decode_frame_config
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_nie__decoder__do_decode_frame_config(
++    wuffs_nie__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_call_sequence == 32u) {
++    } else if (self->private_impl.f_call_sequence < 32u) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      status = wuffs_nie__decoder__do_decode_image_config(self, NULL, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++    } else if (self->private_impl.f_call_sequence == 40u) {
++      if (16u != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
++        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
++        goto exit;
++      }
++    } else if (self->private_impl.f_call_sequence == 64u) {
++      self->private_impl.f_call_sequence = 96u;
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
++    } else {
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
++    }
++    if (a_dst != NULL) {
++      wuffs_base__frame_config__set(
++          a_dst,
++          wuffs_base__utility__make_rect_ie_u32(
++          0u,
++          0u,
++          self->private_impl.f_width,
++          self->private_impl.f_height),
++          ((wuffs_base__flicks)(0u)),
++          0u,
++          16u,
++          0u,
++          false,
++          false,
++          0u);
++    }
++    self->private_impl.f_call_sequence = 64u;
++
++    ok:
++    self->private_impl.p_do_decode_frame_config = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func nie.decoder.decode_frame
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_nie__decoder__decode_frame(
++    wuffs_nie__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_dst || !a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 3)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_frame;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_nie__decoder__do_decode_frame(self,
++            a_dst,
++            a_src,
++            a_blend,
++            a_workbuf,
++            a_opts);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_nie__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++
++    ok:
++    self->private_impl.p_decode_frame = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func nie.decoder.do_decode_frame
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_nie__decoder__do_decode_frame(
++    wuffs_nie__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_call_sequence == 64u) {
++    } else if (self->private_impl.f_call_sequence < 64u) {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      status = wuffs_nie__decoder__do_decode_frame_config(self, NULL, a_src);
++      if (status.repr) {
++        goto suspend;
++      }
++    } else {
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
++    }
++    self->private_impl.f_dst_x = 0u;
++    self->private_impl.f_dst_y = 0u;
++    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
++        wuffs_base__pixel_buffer__pixel_format(a_dst),
++        wuffs_base__pixel_buffer__palette(a_dst),
++        wuffs_base__utility__make_pixel_format(self->private_impl.f_pixfmt),
++        wuffs_base__utility__empty_slice_u8(),
++        a_blend);
++    if ( ! wuffs_base__status__is_ok(&v_status)) {
++      status = v_status;
++      if (wuffs_base__status__is_error(&status)) {
++        goto exit;
++      } else if (wuffs_base__status__is_suspension(&status)) {
++        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++        goto exit;
++      }
++      goto ok;
++    }
++    while (true) {
++      v_status = wuffs_nie__decoder__swizzle(self, a_dst, a_src);
++      if (wuffs_base__status__is_ok(&v_status)) {
++        break;
++      } else if (v_status.repr != wuffs_nie__note__internal_note_short_read) {
++        status = v_status;
++        if (wuffs_base__status__is_error(&status)) {
++          goto exit;
++        } else if (wuffs_base__status__is_suspension(&status)) {
++          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++          goto exit;
++        }
++        goto ok;
++      }
++      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
++    }
++    self->private_impl.f_call_sequence = 96u;
++
++    ok:
++    self->private_impl.p_do_decode_frame = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  return status;
++}
++
++// -------- func nie.decoder.swizzle
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_nie__decoder__swizzle(
++    wuffs_nie__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__pixel_format v_dst_pixfmt = {0};
++  uint32_t v_dst_bits_per_pixel = 0;
++  uint32_t v_dst_bytes_per_pixel = 0;
++  uint64_t v_dst_bytes_per_row = 0;
++  uint32_t v_src_bytes_per_pixel = 0;
++  wuffs_base__table_u8 v_tab = {0};
++  wuffs_base__slice_u8 v_dst = {0};
++  uint64_t v_i = 0;
++  uint64_t v_j = 0;
++  uint64_t v_n = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
++  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
++  if ((v_dst_bits_per_pixel & 7u) != 0u) {
++    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
++    goto exit;
++  }
++  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
++  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
++  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
++  while (true) {
++    if (self->private_impl.f_dst_x == self->private_impl.f_width) {
++      self->private_impl.f_dst_x = 0u;
++      self->private_impl.f_dst_y += 1u;
++      if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
++        break;
++      }
++    }
++    v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
++    if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
++      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
++    }
++    v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
++    if (v_i >= ((uint64_t)(v_dst.len))) {
++      v_src_bytes_per_pixel = 4u;
++      if (self->private_impl.f_pixfmt == 2164308923u) {
++        v_src_bytes_per_pixel = 8u;
++      }
++      v_n = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(v_src_bytes_per_pixel)));
++      v_n = wuffs_base__u64__min(v_n, ((uint64_t)(((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x)))));
++      v_j = v_n;
++      while (v_j >= 8u) {
++        if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 8u)))) {
++          iop_a_src += (v_src_bytes_per_pixel * 8u);
++        }
++        v_j -= 8u;
++      }
++      while (v_j > 0u) {
++        if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 1u)))) {
++          iop_a_src += (v_src_bytes_per_pixel * 1u);
++        }
++        v_j -= 1u;
++      }
++    } else {
++      v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
++          &self->private_impl.f_swizzler,
++          wuffs_base__slice_u8__subslice_i(v_dst, v_i),
++          wuffs_base__pixel_buffer__palette(a_dst),
++          &iop_a_src,
++          io2_a_src);
++    }
++    if (v_n == 0u) {
++      status = wuffs_base__make_status(wuffs_nie__note__internal_note_short_read);
++      goto ok;
++    }
++    wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
++  }
++  status = wuffs_base__make_status(NULL);
++  goto ok;
++
++  ok:
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func nie.decoder.frame_dirty_rect
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
++wuffs_nie__decoder__frame_dirty_rect(
++    const wuffs_nie__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_rect_ie_u32();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_rect_ie_u32();
++  }
++
++  return wuffs_base__utility__make_rect_ie_u32(
++      0u,
++      0u,
++      self->private_impl.f_width,
++      self->private_impl.f_height);
++}
++
++// -------- func nie.decoder.num_animation_loops
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_nie__decoder__num_animation_loops(
++    const wuffs_nie__decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  return 0u;
++}
++
++// -------- func nie.decoder.num_decoded_frame_configs
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_nie__decoder__num_decoded_frame_configs(
++    const wuffs_nie__decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  if (self->private_impl.f_call_sequence > 32u) {
++    return 1u;
++  }
++  return 0u;
++}
++
++// -------- func nie.decoder.num_decoded_frames
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_nie__decoder__num_decoded_frames(
++    const wuffs_nie__decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  if (self->private_impl.f_call_sequence > 64u) {
++    return 1u;
++  }
++  return 0u;
++}
++
++// -------- func nie.decoder.restart_frame
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_nie__decoder__restart_frame(
++    wuffs_nie__decoder* self,
++    uint64_t a_index,
++    uint64_t a_io_position) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++
++  if (self->private_impl.f_call_sequence < 32u) {
++    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++  }
++  if ((a_index != 0u) || (a_io_position != 16u)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  self->private_impl.f_call_sequence = 40u;
++  return wuffs_base__make_status(NULL);
++}
++
++// -------- func nie.decoder.set_report_metadata
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_nie__decoder__set_report_metadata(
++    wuffs_nie__decoder* self,
++    uint32_t a_fourcc,
++    bool a_report) {
++  return wuffs_base__make_empty_struct();
++}
++
++// -------- func nie.decoder.tell_me_more
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_nie__decoder__tell_me_more(
++    wuffs_nie__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__more_information* a_minfo,
++    wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_dst || !a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 4)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  status = wuffs_base__make_status(wuffs_base__error__no_more_information);
++  goto exit;
++
++  goto ok;
++  ok:
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func nie.decoder.workbuf_len
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_nie__decoder__workbuf_len(
++    const wuffs_nie__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++
++  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
++}
++
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE)
++
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ZLIB)
++
++// ---------------- Status Codes Implementations
++
++const char wuffs_zlib__note__dictionary_required[] = "@zlib: dictionary required";
++const char wuffs_zlib__error__bad_checksum[] = "#zlib: bad checksum";
++const char wuffs_zlib__error__bad_compression_method[] = "#zlib: bad compression method";
++const char wuffs_zlib__error__bad_compression_window_size[] = "#zlib: bad compression window size";
++const char wuffs_zlib__error__bad_parity_check[] = "#zlib: bad parity check";
++const char wuffs_zlib__error__incorrect_dictionary[] = "#zlib: incorrect dictionary";
++const char wuffs_zlib__error__truncated_input[] = "#zlib: truncated input";
++
++// ---------------- Private Consts
++
++#define WUFFS_ZLIB__QUIRKS_BASE 2113790976u
++
++#define WUFFS_ZLIB__QUIRKS_COUNT 1u
++
++// ---------------- Private Initializer Prototypes
++
++// ---------------- Private Function Prototypes
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_zlib__decoder__do_transform_io(
++    wuffs_zlib__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf);
++
++// ---------------- VTables
++
++const wuffs_base__io_transformer__func_ptrs
++wuffs_zlib__decoder__func_ptrs_for__wuffs_base__io_transformer = {
++  (wuffs_base__optional_u63(*)(const void*))(&wuffs_zlib__decoder__dst_history_retain_length),
++  (uint64_t(*)(const void*,
++      uint32_t))(&wuffs_zlib__decoder__get_quirk),
++  (wuffs_base__status(*)(void*,
++      uint32_t,
++      uint64_t))(&wuffs_zlib__decoder__set_quirk),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__io_buffer*,
++      wuffs_base__io_buffer*,
++      wuffs_base__slice_u8))(&wuffs_zlib__decoder__transform_io),
++  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_zlib__decoder__workbuf_len),
++};
++
++// ---------------- Initializer Implementations
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_zlib__decoder__initialize(
++    wuffs_zlib__decoder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options){
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (sizeof(*self) != sizeof_star_self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  }
++  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
++      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++  }
++
++  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
++    // The whole point of this if-check is to detect an uninitialized *self.
++    // We disable the warning on GCC. Clang-5.0 does not have this warning.
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++#endif
++    if (self->private_impl.magic != 0) {
++      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++    }
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++  } else {
++    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
++      memset(self, 0, sizeof(*self));
++      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
++    } else {
++      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++    }
++  }
++
++  {
++    wuffs_base__status z = wuffs_adler32__hasher__initialize(
++        &self->private_data.f_checksum, sizeof(self->private_data.f_checksum), WUFFS_VERSION, options);
++    if (z.repr) {
++      return z;
++    }
++  }
++  {
++    wuffs_base__status z = wuffs_adler32__hasher__initialize(
++        &self->private_data.f_dict_id_hasher, sizeof(self->private_data.f_dict_id_hasher), WUFFS_VERSION, options);
++    if (z.repr) {
++      return z;
++    }
++  }
++  {
++    wuffs_base__status z = wuffs_deflate__decoder__initialize(
++        &self->private_data.f_flate, sizeof(self->private_data.f_flate), WUFFS_VERSION, options);
++    if (z.repr) {
++      return z;
++    }
++  }
++  self->private_impl.magic = WUFFS_BASE__MAGIC;
++  self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
++      wuffs_base__io_transformer__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
++      (const void*)(&wuffs_zlib__decoder__func_ptrs_for__wuffs_base__io_transformer);
++  return wuffs_base__make_status(NULL);
++}
++
++wuffs_zlib__decoder*
++wuffs_zlib__decoder__alloc(void) {
++  wuffs_zlib__decoder* x =
++      (wuffs_zlib__decoder*)(calloc(1, sizeof(wuffs_zlib__decoder)));
++  if (!x) {
++    return NULL;
++  }
++  if (wuffs_zlib__decoder__initialize(
++      x, sizeof(wuffs_zlib__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++    free(x);
++    return NULL;
++  }
++  return x;
++}
++
++size_t
++sizeof__wuffs_zlib__decoder(void) {
++  return sizeof(wuffs_zlib__decoder);
++}
++
++// ---------------- Function Implementations
++
++// -------- func zlib.decoder.dictionary_id
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_zlib__decoder__dictionary_id(
++    const wuffs_zlib__decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  return self->private_impl.f_dict_id_want;
++}
++
++// -------- func zlib.decoder.add_dictionary
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_zlib__decoder__add_dictionary(
++    wuffs_zlib__decoder* self,
++    wuffs_base__slice_u8 a_dict) {
++  if (!self) {
++    return wuffs_base__make_empty_struct();
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_empty_struct();
++  }
++
++  if (self->private_impl.f_header_complete) {
++    self->private_impl.f_bad_call_sequence = true;
++  } else {
++    self->private_impl.f_dict_id_have = wuffs_adler32__hasher__update_u32(&self->private_data.f_dict_id_hasher, a_dict);
++    wuffs_deflate__decoder__add_history(&self->private_data.f_flate, a_dict);
++  }
++  self->private_impl.f_got_dictionary = true;
++  return wuffs_base__make_empty_struct();
++}
++
++// -------- func zlib.decoder.get_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_zlib__decoder__get_quirk(
++    const wuffs_zlib__decoder* self,
++    uint32_t a_key) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  uint32_t v_key = 0;
++
++  if ((a_key == 1u) && self->private_impl.f_ignore_checksum) {
++    return 1u;
++  } else if (a_key >= 2113790976u) {
++    v_key = (a_key - 2113790976u);
++    if (v_key < 1u) {
++      if (self->private_impl.f_quirks[v_key]) {
++        return 1u;
++      }
++    }
++  }
++  return 0u;
++}
++
++// -------- func zlib.decoder.set_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_zlib__decoder__set_quirk(
++    wuffs_zlib__decoder* self,
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++
++  if (self->private_impl.f_header_complete) {
++    self->private_impl.f_bad_call_sequence = true;
++    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++  } else if (a_key == 1u) {
++    self->private_impl.f_ignore_checksum = (a_value > 0u);
++    return wuffs_base__make_status(NULL);
++  } else if (a_key >= 2113790976u) {
++    a_key -= 2113790976u;
++    if (a_key < 1u) {
++      self->private_impl.f_quirks[a_key] = (a_value > 0u);
++      return wuffs_base__make_status(NULL);
++    }
++  }
++  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++}
++
++// -------- func zlib.decoder.dst_history_retain_length
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
++wuffs_zlib__decoder__dst_history_retain_length(
++    const wuffs_zlib__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__make_optional_u63(false, 0u);
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__make_optional_u63(false, 0u);
++  }
++
++  return wuffs_base__utility__make_optional_u63(true, 0u);
++}
++
++// -------- func zlib.decoder.workbuf_len
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_zlib__decoder__workbuf_len(
++    const wuffs_zlib__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++
++  return wuffs_base__utility__make_range_ii_u64(1u, 1u);
++}
++
++// -------- func zlib.decoder.transform_io
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_zlib__decoder__transform_io(
++    wuffs_zlib__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_dst || !a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 1)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  uint32_t coro_susp_point = self->private_impl.p_transform_io;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_zlib__decoder__do_transform_io(self, a_dst, a_src, a_workbuf);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_zlib__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++
++    ok:
++    self->private_impl.p_transform_io = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func zlib.decoder.do_transform_io
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_zlib__decoder__do_transform_io(
++    wuffs_zlib__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint16_t v_x = 0;
++  uint32_t v_checksum_have = 0;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++  uint32_t v_checksum_want = 0;
++  uint64_t v_mark = 0;
++
++  uint8_t* iop_a_dst = NULL;
++  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
++    }
++  }
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_do_transform_io;
++  if (coro_susp_point) {
++    v_checksum_have = self->private_data.s_do_transform_io.v_checksum_have;
++  }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_bad_call_sequence) {
++      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++      goto exit;
++    } else if (self->private_impl.f_quirks[0u]) {
++    } else if ( ! self->private_impl.f_want_dictionary) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        uint16_t t_0;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++          t_0 = wuffs_base__peek_u16be__no_bounds_check(iop_a_src);
++          iop_a_src += 2;
++        } else {
++          self->private_data.s_do_transform_io.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+           while (true) {
+-            if (a_src) {
+-              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-            }
+-            v_number_length = wuffs_json__decoder__decode_number(self, a_src);
+-            if (a_src) {
+-              iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-            }
+-            v_number_status = (v_number_length >> 8u);
+-            v_vminor = 10486787u;
+-            if ((v_number_length & 128u) != 0u) {
+-              v_vminor = 10486785u;
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
+             }
+-            v_number_length = (v_number_length & 127u);
+-            if (v_number_status == 0u) {
+-              *iop_a_dst++ = wuffs_base__make_token(
+-                  (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                  (((uint64_t)(v_number_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
++            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++            uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
++            *scratch >>= 8;
++            *scratch <<= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
++            if (num_bits_0 == 8) {
++              t_0 = ((uint16_t)(*scratch >> 48));
+               break;
+             }
+-            while (v_number_length > 0u) {
+-              v_number_length -= 1u;
+-              if (iop_a_src > io1_a_src) {
+-                iop_a_src--;
+-              } else {
+-                status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
+-                goto exit;
++            num_bits_0 += 8u;
++            *scratch |= ((uint64_t)(num_bits_0));
++          }
++        }
++        v_x = t_0;
++      }
++      if (((uint16_t)(((uint16_t)(v_x >> 8u)) & 15u)) != 8u) {
++        status = wuffs_base__make_status(wuffs_zlib__error__bad_compression_method);
++        goto exit;
++      }
++      if (((uint16_t)(v_x >> 12u)) > 7u) {
++        status = wuffs_base__make_status(wuffs_zlib__error__bad_compression_window_size);
++        goto exit;
++      }
++      if (((uint16_t)(v_x % 31u)) != 0u) {
++        status = wuffs_base__make_status(wuffs_zlib__error__bad_parity_check);
++        goto exit;
++      }
++      self->private_impl.f_want_dictionary = (((uint16_t)(v_x & 32u)) != 0u);
++      if (self->private_impl.f_want_dictionary) {
++        self->private_impl.f_dict_id_have = 1u;
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++          uint32_t t_1;
++          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++            t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++            iop_a_src += 4;
++          } else {
++            self->private_data.s_do_transform_io.scratch = 0;
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++            while (true) {
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
+               }
+-            }
+-            if (v_number_status == 1u) {
+-              if (self->private_impl.f_quirks[14u]) {
+-                if (a_dst) {
+-                  a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-                }
+-                if (a_src) {
+-                  a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-                }
+-                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
+-                status = wuffs_json__decoder__decode_inf_nan(self, a_dst, a_src);
+-                if (a_dst) {
+-                  iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
+-                }
+-                if (a_src) {
+-                  iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-                }
+-                if (status.repr) {
+-                  goto suspend;
+-                }
++              uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++              uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
++              *scratch >>= 8;
++              *scratch <<= 8;
++              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
++              if (num_bits_1 == 24) {
++                t_1 = ((uint32_t)(*scratch >> 32));
+                 break;
+               }
+-              status = wuffs_base__make_status(wuffs_json__error__bad_input);
+-              goto exit;
+-            } else if (v_number_status == 2u) {
+-              status = wuffs_base__make_status(wuffs_json__error__unsupported_number_length);
+-              goto exit;
+-            } else {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(17);
+-              while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(18);
+-              }
+-            }
+-          }
+-          break;
+-        } else if (v_class == 5u) {
+-          v_vminor = 2113553u;
+-          if (v_depth == 0u) {
+-          } else if (0u != (v_expect_after_value & (((uint32_t)(1u)) << 6u))) {
+-            v_vminor = 2113601u;
+-          } else {
+-            v_vminor = 2113569u;
+-          }
+-          if (v_depth >= 1024u) {
+-            status = wuffs_base__make_status(wuffs_json__error__unsupported_recursion_depth);
+-            goto exit;
+-          }
+-          v_stack_byte = (v_depth / 32u);
+-          v_stack_bit = (v_depth & 31u);
+-          self->private_data.f_stack[v_stack_byte] |= (((uint32_t)(1u)) << v_stack_bit);
+-          v_depth += 1u;
+-          iop_a_src += 1u;
+-          *iop_a_dst++ = wuffs_base__make_token(
+-              (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-          v_expect = 4162u;
+-          v_expect_after_value = 4164u;
+-          goto label__outer__continue;
+-        } else if (v_class == 6u) {
+-          iop_a_src += 1u;
+-          if (v_depth <= 1u) {
+-            *iop_a_dst++ = wuffs_base__make_token(
+-                (((uint64_t)(2101314u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-            goto label__outer__break;
+-          }
+-          v_depth -= 1u;
+-          v_stack_byte = ((v_depth - 1u) / 32u);
+-          v_stack_bit = ((v_depth - 1u) & 31u);
+-          if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
+-            *iop_a_dst++ = wuffs_base__make_token(
+-                (((uint64_t)(2105410u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-            v_expect = 4356u;
+-            v_expect_after_value = 4356u;
+-          } else {
+-            *iop_a_dst++ = wuffs_base__make_token(
+-                (((uint64_t)(2113602u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-            v_expect = 4164u;
+-            v_expect_after_value = 4164u;
+-          }
+-          goto label__outer__continue;
+-        } else if (v_class == 7u) {
+-          v_vminor = 2105361u;
+-          if (v_depth == 0u) {
+-          } else if (0u != (v_expect_after_value & (((uint32_t)(1u)) << 6u))) {
+-            v_vminor = 2105409u;
+-          } else {
+-            v_vminor = 2105377u;
+-          }
+-          if (v_depth >= 1024u) {
+-            status = wuffs_base__make_status(wuffs_json__error__unsupported_recursion_depth);
+-            goto exit;
+-          }
+-          v_stack_byte = (v_depth / 32u);
+-          v_stack_bit = (v_depth & 31u);
+-          self->private_data.f_stack[v_stack_byte] &= (4294967295u ^ (((uint32_t)(1u)) << v_stack_bit));
+-          v_depth += 1u;
+-          iop_a_src += 1u;
+-          *iop_a_dst++ = wuffs_base__make_token(
+-              (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-          v_expect = 8114u;
+-          v_expect_after_value = 4356u;
+-          goto label__outer__continue;
+-        } else if (v_class == 8u) {
+-          iop_a_src += 1u;
+-          if (v_depth <= 1u) {
+-            *iop_a_dst++ = wuffs_base__make_token(
+-                (((uint64_t)(2101282u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-            goto label__outer__break;
+-          }
+-          v_depth -= 1u;
+-          v_stack_byte = ((v_depth - 1u) / 32u);
+-          v_stack_bit = ((v_depth - 1u) & 31u);
+-          if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
+-            *iop_a_dst++ = wuffs_base__make_token(
+-                (((uint64_t)(2105378u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-            v_expect = 4356u;
+-            v_expect_after_value = 4356u;
+-          } else {
+-            *iop_a_dst++ = wuffs_base__make_token(
+-                (((uint64_t)(2113570u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-            v_expect = 4164u;
+-            v_expect_after_value = 4164u;
+-          }
+-          goto label__outer__continue;
+-        } else if (v_class == 9u) {
+-          v_match = wuffs_base__io_reader__match7(iop_a_src, io2_a_src, a_src, 111546413966853u);
+-          if (v_match == 0u) {
+-            *iop_a_dst++ = wuffs_base__make_token(
+-                (((uint64_t)(8388612u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                (((uint64_t)(5u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-            if (((uint64_t)(io2_a_src - iop_a_src)) < 5u) {
+-              status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
+-              goto exit;
+-            }
+-            iop_a_src += 5u;
+-            break;
+-          } else if (v_match == 1u) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(19);
+-            goto label__outer__continue;
+-          }
+-        } else if (v_class == 10u) {
+-          v_match = wuffs_base__io_reader__match7(iop_a_src, io2_a_src, a_src, 435762131972u);
+-          if (v_match == 0u) {
+-            *iop_a_dst++ = wuffs_base__make_token(
+-                (((uint64_t)(8388616u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-            if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
+-              status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
+-              goto exit;
+-            }
+-            iop_a_src += 4u;
+-            break;
+-          } else if (v_match == 1u) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(20);
+-            goto label__outer__continue;
+-          }
+-        } else if (v_class == 11u) {
+-          v_match = wuffs_base__io_reader__match7(iop_a_src, io2_a_src, a_src, 465676103172u);
+-          if (v_match == 0u) {
+-            *iop_a_dst++ = wuffs_base__make_token(
+-                (((uint64_t)(8388610u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-            if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
+-              status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
+-              goto exit;
+-            }
+-            iop_a_src += 4u;
+-            break;
+-          } else if (v_match == 1u) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(21);
+-            goto label__outer__continue;
+-          }
+-          if (self->private_impl.f_quirks[14u]) {
+-            if (a_dst) {
+-              a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-            }
+-            if (a_src) {
+-              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-            }
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22);
+-            status = wuffs_json__decoder__decode_inf_nan(self, a_dst, a_src);
+-            if (a_dst) {
+-              iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
+-            }
+-            if (a_src) {
+-              iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-            }
+-            if (status.repr) {
+-              goto suspend;
+-            }
+-            break;
+-          }
+-        } else if (v_class == 12u) {
+-          if (self->private_impl.f_quirks[11u] || self->private_impl.f_quirks[12u]) {
+-            if (a_dst) {
+-              a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-            }
+-            if (a_src) {
+-              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-            }
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(23);
+-            status = wuffs_json__decoder__decode_comment(self, a_dst, a_src);
+-            if (a_dst) {
+-              iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
+-            }
+-            if (a_src) {
+-              iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-            }
+-            if (status.repr) {
+-              goto suspend;
+-            }
+-            if (self->private_impl.f_comment_type > 0u) {
+-              goto label__outer__continue;
++              num_bits_1 += 8u;
++              *scratch |= ((uint64_t)(num_bits_1));
+             }
+           }
++          self->private_impl.f_dict_id_want = t_1;
+         }
+-        status = wuffs_base__make_status(wuffs_json__error__bad_input);
++        status = wuffs_base__make_status(wuffs_zlib__note__dictionary_required);
++        goto ok;
++      } else if (self->private_impl.f_got_dictionary) {
++        status = wuffs_base__make_status(wuffs_zlib__error__incorrect_dictionary);
+         goto exit;
+       }
+-      if (v_depth == 0u) {
+-        break;
++    } else if (self->private_impl.f_dict_id_have != self->private_impl.f_dict_id_want) {
++      if (self->private_impl.f_got_dictionary) {
++        status = wuffs_base__make_status(wuffs_zlib__error__incorrect_dictionary);
++        goto exit;
+       }
+-      v_expect = v_expect_after_value;
++      status = wuffs_base__make_status(wuffs_zlib__note__dictionary_required);
++      goto ok;
+     }
+-    label__outer__break:;
+-    if (self->private_impl.f_quirks[17u] || self->private_impl.f_quirks[18u]) {
+-      if (a_dst) {
+-        a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++    self->private_impl.f_header_complete = true;
++    while (true) {
++      v_mark = ((uint64_t)(iop_a_dst - io0_a_dst));
++      {
++        if (a_dst) {
++          a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++        }
++        if (a_src) {
++          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++        }
++        wuffs_base__status t_2 = wuffs_deflate__decoder__transform_io(&self->private_data.f_flate, a_dst, a_src, a_workbuf);
++        v_status = t_2;
++        if (a_dst) {
++          iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
++        }
++        if (a_src) {
++          iop_a_src = a_src->data.ptr + a_src->meta.ri;
++        }
+       }
+-      if (a_src) {
+-        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      if ( ! self->private_impl.f_ignore_checksum &&  ! self->private_impl.f_quirks[0u]) {
++        v_checksum_have = wuffs_adler32__hasher__update_u32(&self->private_data.f_checksum, wuffs_private_impl__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
+       }
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(24);
+-      status = wuffs_json__decoder__decode_trailer(self, a_dst, a_src);
+-      if (a_dst) {
+-        iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
++      if (wuffs_base__status__is_ok(&v_status)) {
++        break;
+       }
+-      if (a_src) {
+-        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
++    }
++    if ( ! self->private_impl.f_quirks[0u]) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++        uint32_t t_3;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++          t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++          iop_a_src += 4;
++        } else {
++          self->private_data.s_do_transform_io.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++            uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu));
++            *scratch >>= 8;
++            *scratch <<= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
++            if (num_bits_3 == 24) {
++              t_3 = ((uint32_t)(*scratch >> 32));
++              break;
++            }
++            num_bits_3 += 8u;
++            *scratch |= ((uint64_t)(num_bits_3));
++          }
++        }
++        v_checksum_want = t_3;
+       }
+-      if (status.repr) {
+-        goto suspend;
++      if ( ! self->private_impl.f_ignore_checksum && (v_checksum_have != v_checksum_want)) {
++        status = wuffs_base__make_status(wuffs_zlib__error__bad_checksum);
++        goto exit;
+       }
+     }
+-    self->private_impl.f_end_of_data = true;
+ 
+-    ok:
+-    self->private_impl.p_decode_tokens[0] = 0;
+-    goto exit;
+-  }
++    ok:
++    self->private_impl.p_do_transform_io = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_do_transform_io.v_checksum_have = v_checksum_have;
++
++  goto exit;
++  exit:
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++  }
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ZLIB)
++
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG)
++
++// ---------------- Status Codes Implementations
++
++const char wuffs_png__error__bad_animation_sequence_number[] = "#png: bad animation sequence number";
++const char wuffs_png__error__bad_checksum[] = "#png: bad checksum";
++const char wuffs_png__error__bad_chunk[] = "#png: bad chunk";
++const char wuffs_png__error__bad_filter[] = "#png: bad filter";
++const char wuffs_png__error__bad_header[] = "#png: bad header";
++const char wuffs_png__error__bad_text_chunk_not_latin_1[] = "#png: bad text chunk (not Latin-1)";
++const char wuffs_png__error__missing_palette[] = "#png: missing palette";
++const char wuffs_png__error__truncated_input[] = "#png: truncated input";
++const char wuffs_png__error__unsupported_cgbi_extension[] = "#png: unsupported CgBI extension";
++const char wuffs_png__error__unsupported_png_compression_method[] = "#png: unsupported PNG compression method";
++const char wuffs_png__error__unsupported_png_file[] = "#png: unsupported PNG file";
++const char wuffs_png__error__internal_error_inconsistent_i_o[] = "#png: internal error: inconsistent I/O";
++const char wuffs_png__error__internal_error_inconsistent_chunk_type[] = "#png: internal error: inconsistent chunk type";
++const char wuffs_png__error__internal_error_inconsistent_workbuf_length[] = "#png: internal error: inconsistent workbuf length";
++const char wuffs_png__error__internal_error_zlib_decoder_did_not_exhaust_its_input[] = "#png: internal error: zlib decoder did not exhaust its input";
++
++// ---------------- Private Consts
++
++#define WUFFS_PNG__ANCILLARY_BIT 32u
++
++static const uint8_t
++WUFFS_PNG__INTERLACING[8][6] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  {
++    0u, 0u, 0u, 0u, 0u, 0u,
++  }, {
++    3u, 7u, 0u, 3u, 7u, 0u,
++  }, {
++    3u, 3u, 4u, 3u, 7u, 0u,
++  }, {
++    2u, 3u, 0u, 3u, 3u, 4u,
++  }, {
++    2u, 1u, 2u, 2u, 3u, 0u,
++  }, {
++    1u, 1u, 0u, 2u, 1u, 2u,
++  }, {
++    1u, 0u, 1u, 1u, 1u, 0u,
++  }, {
++    0u, 0u, 0u, 1u, 0u, 1u,
++  },
++};
++
++static const uint8_t
++WUFFS_PNG__LOW_BIT_DEPTH_MULTIPLIERS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 255u, 85u, 0u, 17u, 0u, 0u, 0u,
++};
++
++static const uint8_t
++WUFFS_PNG__LOW_BIT_DEPTH_NUM_PACKS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 8u, 4u, 0u, 2u, 0u, 0u, 0u,
++};
++
++static const uint8_t
++WUFFS_PNG__NUM_CHANNELS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  1u, 0u, 3u, 1u, 2u, 0u, 4u, 0u,
++};
++
++static const uint16_t
++WUFFS_PNG__LATIN_1[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  32u, 33u, 34u, 35u, 36u, 37u, 38u, 39u,
++  40u, 41u, 42u, 43u, 44u, 45u, 46u, 47u,
++  48u, 49u, 50u, 51u, 52u, 53u, 54u, 55u,
++  56u, 57u, 58u, 59u, 60u, 61u, 62u, 63u,
++  64u, 65u, 66u, 67u, 68u, 69u, 70u, 71u,
++  72u, 73u, 74u, 75u, 76u, 77u, 78u, 79u,
++  80u, 81u, 82u, 83u, 84u, 85u, 86u, 87u,
++  88u, 89u, 90u, 91u, 92u, 93u, 94u, 95u,
++  96u, 97u, 98u, 99u, 100u, 101u, 102u, 103u,
++  104u, 105u, 106u, 107u, 108u, 109u, 110u, 111u,
++  112u, 113u, 114u, 115u, 116u, 117u, 118u, 119u,
++  120u, 121u, 122u, 123u, 124u, 125u, 126u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 41410u, 41666u, 41922u, 42178u, 42434u, 42690u, 42946u,
++  43202u, 43458u, 43714u, 43970u, 44226u, 44482u, 44738u, 44994u,
++  45250u, 45506u, 45762u, 46018u, 46274u, 46530u, 46786u, 47042u,
++  47298u, 47554u, 47810u, 48066u, 48322u, 48578u, 48834u, 49090u,
++  32963u, 33219u, 33475u, 33731u, 33987u, 34243u, 34499u, 34755u,
++  35011u, 35267u, 35523u, 35779u, 36035u, 36291u, 36547u, 36803u,
++  37059u, 37315u, 37571u, 37827u, 38083u, 38339u, 38595u, 38851u,
++  39107u, 39363u, 39619u, 39875u, 40131u, 40387u, 40643u, 40899u,
++  41155u, 41411u, 41667u, 41923u, 42179u, 42435u, 42691u, 42947u,
++  43203u, 43459u, 43715u, 43971u, 44227u, 44483u, 44739u, 44995u,
++  45251u, 45507u, 45763u, 46019u, 46275u, 46531u, 46787u, 47043u,
++  47299u, 47555u, 47811u, 48067u, 48323u, 48579u, 48835u, 49091u,
++};
++
++// ---------------- Private Initializer Prototypes
++
++// ---------------- Private Function Prototypes
++
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_1_distance_4_arm_neon(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr);
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
++
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_3_distance_4_arm_neon(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev);
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
++
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_4_distance_3_arm_neon(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev);
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
++
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_4_distance_4_arm_neon(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev);
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_1(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_1__choosy_default(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_1_distance_3_fallback(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_1_distance_4_fallback(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_2(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev);
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_tokens[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
+-  self->private_data.s_decode_tokens[0].v_depth = v_depth;
+-  self->private_data.s_decode_tokens[0].v_expect = v_expect;
+-  self->private_data.s_decode_tokens[0].v_expect_after_value = v_expect_after_value;
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_3(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev);
+ 
+-  goto exit;
+-  exit:
+-  if (a_dst && a_dst->data.ptr) {
+-    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-  }
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_3__choosy_default(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev);
+ 
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-  }
+-  return status;
+-}
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_3_distance_3_fallback(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev);
+ 
+-// -------- func json.decoder.decode_number
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_3_distance_4_fallback(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev);
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static uint32_t
+-wuffs_json__decoder__decode_number(
+-    wuffs_json__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
+-  uint8_t v_c = 0;
+-  uint32_t v_n = 0;
+-  uint32_t v_floating_point = 0;
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_4(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev);
+ 
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_4__choosy_default(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev);
+ 
+-  do {
+-    v_n = 0u;
+-    if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-      if ( ! (a_src && a_src->meta.closed)) {
+-        v_n |= 768u;
+-      }
+-      break;
+-    }
+-    v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-    if (v_c != 45u) {
+-    } else {
+-      v_n += 1u;
+-      iop_a_src += 1u;
+-      if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-        if ( ! (a_src && a_src->meta.closed)) {
+-          v_n |= 768u;
+-        }
+-        v_n |= 256u;
+-        break;
+-      }
+-      v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-    }
+-    if (v_c == 48u) {
+-      v_n += 1u;
+-      iop_a_src += 1u;
+-    } else {
+-      if (a_src) {
+-        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-      }
+-      v_n = wuffs_json__decoder__decode_digits(self, a_src, v_n);
+-      if (a_src) {
+-        iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-      }
+-      if (v_n > 99u) {
+-        break;
+-      }
+-    }
+-    if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-      if ( ! (a_src && a_src->meta.closed)) {
+-        v_n |= 768u;
+-      }
+-      break;
+-    }
+-    v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-    if (v_c != 46u) {
+-    } else {
+-      if (v_n >= 99u) {
+-        v_n |= 512u;
+-        break;
+-      }
+-      v_n += 1u;
+-      iop_a_src += 1u;
+-      v_floating_point = 128u;
+-      if (a_src) {
+-        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-      }
+-      v_n = wuffs_json__decoder__decode_digits(self, a_src, v_n);
+-      if (a_src) {
+-        iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-      }
+-      if (v_n > 99u) {
+-        break;
+-      }
+-      if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-        if ( ! (a_src && a_src->meta.closed)) {
+-          v_n |= 768u;
+-        }
+-        break;
+-      }
+-      v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-    }
+-    if ((v_c != 69u) && (v_c != 101u)) {
+-      break;
+-    }
+-    if (v_n >= 99u) {
+-      v_n |= 512u;
+-      break;
+-    }
+-    v_n += 1u;
+-    iop_a_src += 1u;
+-    v_floating_point = 128u;
+-    if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-      if ( ! (a_src && a_src->meta.closed)) {
+-        v_n |= 768u;
+-      }
+-      v_n |= 256u;
+-      break;
+-    }
+-    v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-    if ((v_c != 43u) && (v_c != 45u)) {
+-    } else {
+-      if (v_n >= 99u) {
+-        v_n |= 512u;
+-        break;
+-      }
+-      v_n += 1u;
+-      iop_a_src += 1u;
+-    }
+-    if (a_src) {
+-      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-    }
+-    v_n = wuffs_json__decoder__decode_digits(self, a_src, v_n);
+-    if (a_src) {
+-      iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-    }
+-  } while (0);
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
+-  return (v_n | v_floating_point);
+-}
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_4_distance_3_fallback(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev);
+ 
+-// -------- func json.decoder.decode_digits
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_4_distance_4_fallback(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev);
+ 
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
+ WUFFS_BASE__GENERATED_C_CODE
+-static uint32_t
+-wuffs_json__decoder__decode_digits(
+-    wuffs_json__decoder* self,
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_1_distance_4_x86_sse42(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr);
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_3_distance_4_x86_sse42(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev);
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_4_distance_3_x86_sse42(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev);
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_4_distance_4_x86_sse42(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev);
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_png__decoder__do_decode_image_config(
++    wuffs_png__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_png__decoder__decode_ihdr(
++    wuffs_png__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__assign_filter_distance(
++    wuffs_png__decoder* self);
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint64_t
++wuffs_png__decoder__calculate_bytes_per_row(
++    const wuffs_png__decoder* self,
++    uint32_t a_width);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__choose_filter_implementations(
++    wuffs_png__decoder* self);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_png__decoder__decode_other_chunk(
++    wuffs_png__decoder* self,
+     wuffs_base__io_buffer* a_src,
+-    uint32_t a_n) {
+-  uint8_t v_c = 0;
+-  uint32_t v_n = 0;
++    bool a_framy);
+ 
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_png__decoder__decode_actl(
++    wuffs_png__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_png__decoder__decode_chrm(
++    wuffs_png__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_png__decoder__decode_exif(
++    wuffs_png__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_png__decoder__decode_fctl(
++    wuffs_png__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_png__decoder__decode_gama(
++    wuffs_png__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_png__decoder__decode_iccp(
++    wuffs_png__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_png__decoder__decode_plte(
++    wuffs_png__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_png__decoder__decode_srgb(
++    wuffs_png__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_png__decoder__decode_trns(
++    wuffs_png__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_png__decoder__do_decode_frame_config(
++    wuffs_png__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_png__decoder__skip_frame(
++    wuffs_png__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_png__decoder__do_decode_frame(
++    wuffs_png__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_png__decoder__decode_pass(
++    wuffs_png__decoder* self,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_png__decoder__do_tell_me_more(
++    wuffs_png__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__more_information* a_minfo,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_png__decoder__filter_and_swizzle(
++    wuffs_png__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__slice_u8 a_workbuf);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_png__decoder__filter_and_swizzle__choosy_default(
++    wuffs_png__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__slice_u8 a_workbuf);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_png__decoder__filter_and_swizzle_tricky(
++    wuffs_png__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__slice_u8 a_workbuf);
++
++// ---------------- VTables
++
++const wuffs_base__image_decoder__func_ptrs
++wuffs_png__decoder__func_ptrs_for__wuffs_base__image_decoder = {
++  (wuffs_base__status(*)(void*,
++      wuffs_base__pixel_buffer*,
++      wuffs_base__io_buffer*,
++      wuffs_base__pixel_blend,
++      wuffs_base__slice_u8,
++      wuffs_base__decode_frame_options*))(&wuffs_png__decoder__decode_frame),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__frame_config*,
++      wuffs_base__io_buffer*))(&wuffs_png__decoder__decode_frame_config),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__image_config*,
++      wuffs_base__io_buffer*))(&wuffs_png__decoder__decode_image_config),
++  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_png__decoder__frame_dirty_rect),
++  (uint64_t(*)(const void*,
++      uint32_t))(&wuffs_png__decoder__get_quirk),
++  (uint32_t(*)(const void*))(&wuffs_png__decoder__num_animation_loops),
++  (uint64_t(*)(const void*))(&wuffs_png__decoder__num_decoded_frame_configs),
++  (uint64_t(*)(const void*))(&wuffs_png__decoder__num_decoded_frames),
++  (wuffs_base__status(*)(void*,
++      uint64_t,
++      uint64_t))(&wuffs_png__decoder__restart_frame),
++  (wuffs_base__status(*)(void*,
++      uint32_t,
++      uint64_t))(&wuffs_png__decoder__set_quirk),
++  (wuffs_base__empty_struct(*)(void*,
++      uint32_t,
++      bool))(&wuffs_png__decoder__set_report_metadata),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__io_buffer*,
++      wuffs_base__more_information*,
++      wuffs_base__io_buffer*))(&wuffs_png__decoder__tell_me_more),
++  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_png__decoder__workbuf_len),
++};
++
++// ---------------- Initializer Implementations
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_png__decoder__initialize(
++    wuffs_png__decoder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options){
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (sizeof(*self) != sizeof_star_self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  }
++  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
++      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
+   }
+ 
+-  v_n = a_n;
+-  while (true) {
+-    if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-      if ( ! (a_src && a_src->meta.closed)) {
+-        v_n |= 768u;
+-      }
+-      break;
++  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
++    // The whole point of this if-check is to detect an uninitialized *self.
++    // We disable the warning on GCC. Clang-5.0 does not have this warning.
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++#endif
++    if (self->private_impl.magic != 0) {
++      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
+     }
+-    v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-    if (0u == WUFFS_JSON__LUT_DECIMAL_DIGITS[v_c]) {
+-      break;
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++  } else {
++    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
++      memset(self, 0, sizeof(*self));
++      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
++    } else {
++      memset(&(self->private_impl), 0, sizeof(self->private_impl));
+     }
+-    if (v_n >= 99u) {
+-      v_n |= 512u;
+-      break;
++  }
++
++  self->private_impl.choosy_filter_1 = &wuffs_png__decoder__filter_1__choosy_default;
++  self->private_impl.choosy_filter_3 = &wuffs_png__decoder__filter_3__choosy_default;
++  self->private_impl.choosy_filter_4 = &wuffs_png__decoder__filter_4__choosy_default;
++  self->private_impl.choosy_filter_and_swizzle = &wuffs_png__decoder__filter_and_swizzle__choosy_default;
++
++  {
++    wuffs_base__status z = wuffs_crc32__ieee_hasher__initialize(
++        &self->private_data.f_crc32, sizeof(self->private_data.f_crc32), WUFFS_VERSION, options);
++    if (z.repr) {
++      return z;
+     }
+-    v_n += 1u;
+-    iop_a_src += 1u;
+   }
+-  if (v_n == a_n) {
+-    v_n |= 256u;
++  {
++    wuffs_base__status z = wuffs_zlib__decoder__initialize(
++        &self->private_data.f_zlib, sizeof(self->private_data.f_zlib), WUFFS_VERSION, options);
++    if (z.repr) {
++      return z;
++    }
+   }
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  self->private_impl.magic = WUFFS_BASE__MAGIC;
++  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
++      wuffs_base__image_decoder__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
++      (const void*)(&wuffs_png__decoder__func_ptrs_for__wuffs_base__image_decoder);
++  return wuffs_base__make_status(NULL);
++}
++
++wuffs_png__decoder*
++wuffs_png__decoder__alloc(void) {
++  wuffs_png__decoder* x =
++      (wuffs_png__decoder*)(calloc(1, sizeof(wuffs_png__decoder)));
++  if (!x) {
++    return NULL;
+   }
+-  return v_n;
++  if (wuffs_png__decoder__initialize(
++      x, sizeof(wuffs_png__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++    free(x);
++    return NULL;
++  }
++  return x;
++}
++
++size_t
++sizeof__wuffs_png__decoder(void) {
++  return sizeof(wuffs_png__decoder);
+ }
+ 
+-// -------- func json.decoder.decode_leading
++// ---------------- Function Implementations
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_json__decoder__decode_leading(
+-    wuffs_json__decoder* self,
+-    wuffs_base__token_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++// ‼ WUFFS MULTI-FILE SECTION +arm_neon
++// -------- func png.decoder.filter_1_distance_4_arm_neon
+ 
+-  uint8_t v_c = 0;
+-  uint32_t v_u = 0;
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_1_distance_4_arm_neon(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr) {
++  wuffs_base__slice_u8 v_curr = {0};
++  uint8x8_t v_fa = {0};
++  uint8x8_t v_fx = {0};
+ 
+-  wuffs_base__token* iop_a_dst = NULL;
+-  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_dst && a_dst->data.ptr) {
+-    io0_a_dst = a_dst->data.ptr;
+-    io1_a_dst = io0_a_dst + a_dst->meta.wi;
+-    iop_a_dst = io1_a_dst;
+-    io2_a_dst = io0_a_dst + a_dst->data.len;
+-    if (a_dst->meta.closed) {
+-      io2_a_dst = iop_a_dst;
++  {
++    wuffs_base__slice_u8 i_slice_curr = a_curr;
++    v_curr.ptr = i_slice_curr.ptr;
++    v_curr.len = 4;
++    const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8));
++    while (v_curr.ptr < i_end0_curr) {
++      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++      v_fx = vadd_u8(v_fx, v_fa);
++      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
++      v_fa = v_fx;
++      v_curr.ptr += 4;
++      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++      v_fx = vadd_u8(v_fx, v_fa);
++      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
++      v_fa = v_fx;
++      v_curr.ptr += 4;
+     }
++    v_curr.len = 4;
++    const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
++    while (v_curr.ptr < i_end1_curr) {
++      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++      v_fx = vadd_u8(v_fx, v_fa);
++      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
++      v_fa = v_fx;
++      v_curr.ptr += 4;
++    }
++    v_curr.len = 0;
+   }
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
++  return wuffs_base__make_empty_struct();
++}
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
++// ‼ WUFFS MULTI-FILE SECTION -arm_neon
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_leading[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++// ‼ WUFFS MULTI-FILE SECTION +arm_neon
++// -------- func png.decoder.filter_3_distance_4_arm_neon
+ 
+-    self->private_impl.f_allow_leading_ars = self->private_impl.f_quirks[15u];
+-    self->private_impl.f_allow_leading_ubom = self->private_impl.f_quirks[16u];
+-    while (self->private_impl.f_allow_leading_ars || self->private_impl.f_allow_leading_ubom) {
+-      if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+-        continue;
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_3_distance_4_arm_neon(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev) {
++  wuffs_base__slice_u8 v_curr = {0};
++  wuffs_base__slice_u8 v_prev = {0};
++  uint8x8_t v_fa = {0};
++  uint8x8_t v_fb = {0};
++  uint8x8_t v_fx = {0};
++
++  if (((uint64_t)(a_prev.len)) == 0u) {
++    {
++      wuffs_base__slice_u8 i_slice_curr = a_curr;
++      v_curr.ptr = i_slice_curr.ptr;
++      v_curr.len = 4;
++      const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8));
++      while (v_curr.ptr < i_end0_curr) {
++        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
++        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
++        v_fa = v_fx;
++        v_curr.ptr += 4;
++        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
++        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
++        v_fa = v_fx;
++        v_curr.ptr += 4;
+       }
+-      if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-        if (a_src && a_src->meta.closed) {
+-          break;
+-        }
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
+-        continue;
++      v_curr.len = 4;
++      const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
++      while (v_curr.ptr < i_end1_curr) {
++        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
++        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
++        v_fa = v_fx;
++        v_curr.ptr += 4;
+       }
+-      v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-      if ((v_c == 30u) && self->private_impl.f_allow_leading_ars) {
+-        self->private_impl.f_allow_leading_ars = false;
+-        iop_a_src += 1u;
+-        *iop_a_dst++ = wuffs_base__make_token(
+-            (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-            (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-        continue;
+-      } else if ((v_c == 239u) && self->private_impl.f_allow_leading_ubom) {
+-        if (((uint64_t)(io2_a_src - iop_a_src)) < 3u) {
+-          if (a_src && a_src->meta.closed) {
+-            break;
+-          }
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
+-          continue;
+-        }
+-        v_u = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
+-        if (v_u == 12565487u) {
+-          self->private_impl.f_allow_leading_ubom = false;
+-          iop_a_src += 3u;
+-          *iop_a_dst++ = wuffs_base__make_token(
+-              (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-              (((uint64_t)(3u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-          continue;
+-        }
++      v_curr.len = 0;
++    }
++  } else {
++    {
++      wuffs_base__slice_u8 i_slice_curr = a_curr;
++      v_curr.ptr = i_slice_curr.ptr;
++      wuffs_base__slice_u8 i_slice_prev = a_prev;
++      v_prev.ptr = i_slice_prev.ptr;
++      i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
++      v_curr.len = 4;
++      v_prev.len = 4;
++      const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8));
++      while (v_curr.ptr < i_end0_curr) {
++        v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
++        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
++        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
++        v_fa = v_fx;
++        v_curr.ptr += 4;
++        v_prev.ptr += 4;
++        v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
++        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
++        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
++        v_fa = v_fx;
++        v_curr.ptr += 4;
++        v_prev.ptr += 4;
+       }
+-      break;
++      v_curr.len = 4;
++      v_prev.len = 4;
++      const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
++      while (v_curr.ptr < i_end1_curr) {
++        v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
++        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
++        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
++        v_fa = v_fx;
++        v_curr.ptr += 4;
++        v_prev.ptr += 4;
++      }
++      v_curr.len = 0;
++      v_prev.len = 0;
+     }
+-
+-    ok:
+-    self->private_impl.p_decode_leading[0] = 0;
+-    goto exit;
+-  }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_leading[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-
+-  goto exit;
+-  exit:
+-  if (a_dst && a_dst->data.ptr) {
+-    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-  }
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+-
+-  return status;
++  return wuffs_base__make_empty_struct();
+ }
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
++// ‼ WUFFS MULTI-FILE SECTION -arm_neon
+ 
+-// -------- func json.decoder.decode_comment
++// ‼ WUFFS MULTI-FILE SECTION +arm_neon
++// -------- func png.decoder.filter_4_distance_3_arm_neon
+ 
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_json__decoder__decode_comment(
+-    wuffs_json__decoder* self,
+-    wuffs_base__token_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  uint8_t v_c = 0;
+-  uint16_t v_c2 = 0;
+-  uint32_t v_length = 0;
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_4_distance_3_arm_neon(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev) {
++  wuffs_base__slice_u8 v_curr = {0};
++  wuffs_base__slice_u8 v_prev = {0};
++  uint8x8_t v_fa = {0};
++  uint8x8_t v_fb = {0};
++  uint8x8_t v_fc = {0};
++  uint8x8_t v_fx = {0};
++  uint16x8_t v_fafb = {0};
++  uint16x8_t v_fcfc = {0};
++  uint16x8_t v_pa = {0};
++  uint16x8_t v_pb = {0};
++  uint16x8_t v_pc = {0};
++  uint16x8_t v_cmpab = {0};
++  uint16x8_t v_cmpac = {0};
++  uint8x8_t v_picka = {0};
++  uint8x8_t v_pickb = {0};
+ 
+-  wuffs_base__token* iop_a_dst = NULL;
+-  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_dst && a_dst->data.ptr) {
+-    io0_a_dst = a_dst->data.ptr;
+-    io1_a_dst = io0_a_dst + a_dst->meta.wi;
+-    iop_a_dst = io1_a_dst;
+-    io2_a_dst = io0_a_dst + a_dst->data.len;
+-    if (a_dst->meta.closed) {
+-      io2_a_dst = iop_a_dst;
++  {
++    wuffs_base__slice_u8 i_slice_curr = a_curr;
++    v_curr.ptr = i_slice_curr.ptr;
++    wuffs_base__slice_u8 i_slice_prev = a_prev;
++    v_prev.ptr = i_slice_prev.ptr;
++    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
++    v_curr.len = 4;
++    v_prev.len = 4;
++    const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, wuffs_private_impl__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 7, 6));
++    while (v_curr.ptr < i_end0_curr) {
++      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
++      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++      v_fafb = vaddl_u8(v_fa, v_fb);
++      v_fcfc = vaddl_u8(v_fc, v_fc);
++      v_pa = vabdl_u8(v_fb, v_fc);
++      v_pb = vabdl_u8(v_fa, v_fc);
++      v_pc = vabdq_u16(v_fafb, v_fcfc);
++      v_cmpab = vcleq_u16(v_pa, v_pb);
++      v_cmpac = vcleq_u16(v_pa, v_pc);
++      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
++      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
++      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
++      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
++      v_fc = v_fb;
++      v_fa = v_fx;
++      v_curr.ptr += 3;
++      v_prev.ptr += 3;
++      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
++      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++      v_fafb = vaddl_u8(v_fa, v_fb);
++      v_fcfc = vaddl_u8(v_fc, v_fc);
++      v_pa = vabdl_u8(v_fb, v_fc);
++      v_pb = vabdl_u8(v_fa, v_fc);
++      v_pc = vabdq_u16(v_fafb, v_fcfc);
++      v_cmpab = vcleq_u16(v_pa, v_pb);
++      v_cmpac = vcleq_u16(v_pa, v_pc);
++      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
++      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
++      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
++      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
++      v_fc = v_fb;
++      v_fa = v_fx;
++      v_curr.ptr += 3;
++      v_prev.ptr += 3;
+     }
++    v_curr.len = 4;
++    v_prev.len = 4;
++    const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, wuffs_private_impl__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 4, 3));
++    while (v_curr.ptr < i_end1_curr) {
++      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
++      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++      v_fafb = vaddl_u8(v_fa, v_fb);
++      v_fcfc = vaddl_u8(v_fc, v_fc);
++      v_pa = vabdl_u8(v_fb, v_fc);
++      v_pb = vabdl_u8(v_fa, v_fc);
++      v_pc = vabdq_u16(v_fafb, v_fcfc);
++      v_cmpab = vcleq_u16(v_pa, v_pb);
++      v_cmpac = vcleq_u16(v_pa, v_pc);
++      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
++      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
++      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
++      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
++      v_fc = v_fb;
++      v_fa = v_fx;
++      v_curr.ptr += 3;
++      v_prev.ptr += 3;
++    }
++    v_curr.len = 3;
++    v_prev.len = 3;
++    const uint8_t* i_end2_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3));
++    while (v_curr.ptr < i_end2_curr) {
++      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u24le__no_bounds_check(v_prev.ptr)));
++      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u24le__no_bounds_check(v_curr.ptr)));
++      v_fafb = vaddl_u8(v_fa, v_fb);
++      v_fcfc = vaddl_u8(v_fc, v_fc);
++      v_pa = vabdl_u8(v_fb, v_fc);
++      v_pb = vabdl_u8(v_fa, v_fc);
++      v_pc = vabdq_u16(v_fafb, v_fcfc);
++      v_cmpab = vcleq_u16(v_pa, v_pb);
++      v_cmpac = vcleq_u16(v_pa, v_pc);
++      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
++      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
++      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
++      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
++      v_curr.ptr += 3;
++      v_prev.ptr += 3;
++    }
++    v_curr.len = 0;
++    v_prev.len = 0;
+   }
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
++  return wuffs_base__make_empty_struct();
++}
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
++// ‼ WUFFS MULTI-FILE SECTION -arm_neon
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_comment[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++// ‼ WUFFS MULTI-FILE SECTION +arm_neon
++// -------- func png.decoder.filter_4_distance_4_arm_neon
+ 
+-    self->private_impl.f_comment_type = 0u;
+-    while ((((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) || (((uint64_t)(io2_a_src - iop_a_src)) <= 1u)) {
+-      if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+-        continue;
+-      }
+-      if (a_src && a_src->meta.closed) {
+-        status = wuffs_base__make_status(NULL);
+-        goto ok;
+-      }
+-      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
+-    }
+-    v_c2 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
+-    if ((v_c2 == 10799u) && self->private_impl.f_quirks[11u]) {
+-      iop_a_src += 2u;
+-      v_length = 2u;
+-      while (true) {
+-        if (((uint64_t)(io2_a_src - iop_a_src)) <= 1u) {
+-          if (v_length > 0u) {
+-            *iop_a_dst++ = wuffs_base__make_token(
+-                (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-          }
+-          if (a_src && a_src->meta.closed) {
+-            status = wuffs_base__make_status(wuffs_json__error__bad_input);
+-            goto exit;
+-          }
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
+-          while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
+-          }
+-          v_length = 0u;
+-          continue;
+-        }
+-        v_c2 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
+-        if (v_c2 == 12074u) {
+-          iop_a_src += 2u;
+-          *iop_a_dst++ = wuffs_base__make_token(
+-              (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-              (((uint64_t)((v_length + 2u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-          self->private_impl.f_comment_type = 1u;
+-          status = wuffs_base__make_status(NULL);
+-          goto ok;
+-        }
+-        iop_a_src += 1u;
+-        if (v_length >= 65533u) {
+-          *iop_a_dst++ = wuffs_base__make_token(
+-              (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-              (((uint64_t)((v_length + 1u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-          while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
+-          }
+-          v_length = 0u;
+-          continue;
+-        }
+-        v_length += 1u;
+-      }
+-    } else if ((v_c2 == 12079u) && self->private_impl.f_quirks[12u]) {
+-      iop_a_src += 2u;
+-      v_length = 2u;
+-      while (true) {
+-        if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-          if (a_src && a_src->meta.closed) {
+-            *iop_a_dst++ = wuffs_base__make_token(
+-                (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-            self->private_impl.f_comment_type = 2u;
+-            status = wuffs_base__make_status(NULL);
+-            goto ok;
+-          } else if (v_length > 0u) {
+-            *iop_a_dst++ = wuffs_base__make_token(
+-                (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-                (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-          }
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
+-          while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
+-          }
+-          v_length = 0u;
+-          continue;
+-        }
+-        v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-        if (v_c == 10u) {
+-          *iop_a_dst++ = wuffs_base__make_token(
+-              (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-              (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-          self->private_impl.f_comment_type = 2u;
+-          status = wuffs_base__make_status(NULL);
+-          goto ok;
+-        }
+-        iop_a_src += 1u;
+-        if (v_length >= 65533u) {
+-          *iop_a_dst++ = wuffs_base__make_token(
+-              (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
+-              (((uint64_t)((v_length + 1u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-          while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
+-          }
+-          v_length = 0u;
+-          continue;
+-        }
+-        v_length += 1u;
+-      }
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_4_distance_4_arm_neon(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev) {
++  wuffs_base__slice_u8 v_curr = {0};
++  wuffs_base__slice_u8 v_prev = {0};
++  uint8x8_t v_fa = {0};
++  uint8x8_t v_fb = {0};
++  uint8x8_t v_fc = {0};
++  uint8x8_t v_fx = {0};
++  uint16x8_t v_fafb = {0};
++  uint16x8_t v_fcfc = {0};
++  uint16x8_t v_pa = {0};
++  uint16x8_t v_pb = {0};
++  uint16x8_t v_pc = {0};
++  uint16x8_t v_cmpab = {0};
++  uint16x8_t v_cmpac = {0};
++  uint8x8_t v_picka = {0};
++  uint8x8_t v_pickb = {0};
++
++  {
++    wuffs_base__slice_u8 i_slice_curr = a_curr;
++    v_curr.ptr = i_slice_curr.ptr;
++    wuffs_base__slice_u8 i_slice_prev = a_prev;
++    v_prev.ptr = i_slice_prev.ptr;
++    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
++    v_curr.len = 4;
++    v_prev.len = 4;
++    const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8));
++    while (v_curr.ptr < i_end0_curr) {
++      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
++      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++      v_fafb = vaddl_u8(v_fa, v_fb);
++      v_fcfc = vaddl_u8(v_fc, v_fc);
++      v_pa = vabdl_u8(v_fb, v_fc);
++      v_pb = vabdl_u8(v_fa, v_fc);
++      v_pc = vabdq_u16(v_fafb, v_fcfc);
++      v_cmpab = vcleq_u16(v_pa, v_pb);
++      v_cmpac = vcleq_u16(v_pa, v_pc);
++      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
++      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
++      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
++      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
++      v_fc = v_fb;
++      v_fa = v_fx;
++      v_curr.ptr += 4;
++      v_prev.ptr += 4;
++      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
++      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++      v_fafb = vaddl_u8(v_fa, v_fb);
++      v_fcfc = vaddl_u8(v_fc, v_fc);
++      v_pa = vabdl_u8(v_fb, v_fc);
++      v_pb = vabdl_u8(v_fa, v_fc);
++      v_pc = vabdq_u16(v_fafb, v_fcfc);
++      v_cmpab = vcleq_u16(v_pa, v_pb);
++      v_cmpac = vcleq_u16(v_pa, v_pc);
++      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
++      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
++      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
++      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
++      v_fc = v_fb;
++      v_fa = v_fx;
++      v_curr.ptr += 4;
++      v_prev.ptr += 4;
+     }
+-
+-    ok:
+-    self->private_impl.p_decode_comment[0] = 0;
+-    goto exit;
++    v_curr.len = 4;
++    v_prev.len = 4;
++    const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
++    while (v_curr.ptr < i_end1_curr) {
++      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
++      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++      v_fafb = vaddl_u8(v_fa, v_fb);
++      v_fcfc = vaddl_u8(v_fc, v_fc);
++      v_pa = vabdl_u8(v_fb, v_fc);
++      v_pb = vabdl_u8(v_fa, v_fc);
++      v_pc = vabdq_u16(v_fafb, v_fcfc);
++      v_cmpab = vcleq_u16(v_pa, v_pb);
++      v_cmpac = vcleq_u16(v_pa, v_pc);
++      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
++      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
++      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
++      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
++      v_fc = v_fb;
++      v_fa = v_fx;
++      v_curr.ptr += 4;
++      v_prev.ptr += 4;
++    }
++    v_curr.len = 0;
++    v_prev.len = 0;
+   }
++  return wuffs_base__make_empty_struct();
++}
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
++// ‼ WUFFS MULTI-FILE SECTION -arm_neon
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_comment[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++// -------- func png.decoder.filter_1
+ 
+-  goto exit;
+-  exit:
+-  if (a_dst && a_dst->data.ptr) {
+-    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-  }
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_1(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr) {
++  return (*self->private_impl.choosy_filter_1)(self, a_curr);
++}
+ 
+-  return status;
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_1__choosy_default(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr) {
++  uint64_t v_filter_distance = 0;
++  uint8_t v_fa = 0;
++  uint64_t v_i_start = 0;
++  uint64_t v_i = 0;
++
++  v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance));
++  v_i_start = 0u;
++  while (v_i_start < v_filter_distance) {
++    v_fa = 0u;
++    v_i = v_i_start;
++    while (v_i < ((uint64_t)(a_curr.len))) {
++      a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + v_fa));
++      v_fa = a_curr.ptr[v_i];
++      v_i += v_filter_distance;
++    }
++    v_i_start += 1u;
++  }
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-// -------- func json.decoder.decode_inf_nan
++// -------- func png.decoder.filter_1_distance_3_fallback
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_json__decoder__decode_inf_nan(
+-    wuffs_json__decoder* self,
+-    wuffs_base__token_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  uint32_t v_c4 = 0;
+-  uint32_t v_neg = 0;
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_1_distance_3_fallback(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr) {
++  wuffs_base__slice_u8 v_curr = {0};
++  uint8_t v_fa0 = 0;
++  uint8_t v_fa1 = 0;
++  uint8_t v_fa2 = 0;
+ 
+-  wuffs_base__token* iop_a_dst = NULL;
+-  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_dst && a_dst->data.ptr) {
+-    io0_a_dst = a_dst->data.ptr;
+-    io1_a_dst = io0_a_dst + a_dst->meta.wi;
+-    iop_a_dst = io1_a_dst;
+-    io2_a_dst = io0_a_dst + a_dst->data.len;
+-    if (a_dst->meta.closed) {
+-      io2_a_dst = iop_a_dst;
++  {
++    wuffs_base__slice_u8 i_slice_curr = a_curr;
++    v_curr.ptr = i_slice_curr.ptr;
++    v_curr.len = 3;
++    const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 6) * 6));
++    while (v_curr.ptr < i_end0_curr) {
++      v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0u]));
++      v_curr.ptr[0u] = v_fa0;
++      v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1u]));
++      v_curr.ptr[1u] = v_fa1;
++      v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2u]));
++      v_curr.ptr[2u] = v_fa2;
++      v_curr.ptr += 3;
++      v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0u]));
++      v_curr.ptr[0u] = v_fa0;
++      v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1u]));
++      v_curr.ptr[1u] = v_fa1;
++      v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2u]));
++      v_curr.ptr[2u] = v_fa2;
++      v_curr.ptr += 3;
+     }
++    v_curr.len = 3;
++    const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3));
++    while (v_curr.ptr < i_end1_curr) {
++      v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0u]));
++      v_curr.ptr[0u] = v_fa0;
++      v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1u]));
++      v_curr.ptr[1u] = v_fa1;
++      v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2u]));
++      v_curr.ptr[2u] = v_fa2;
++      v_curr.ptr += 3;
++    }
++    v_curr.len = 0;
+   }
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
++  return wuffs_base__make_empty_struct();
++}
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_inf_nan[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++// -------- func png.decoder.filter_1_distance_4_fallback
+ 
+-    while (true) {
+-      if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+-        continue;
+-      }
+-      if (((uint64_t)(io2_a_src - iop_a_src)) <= 2u) {
+-        if (a_src && a_src->meta.closed) {
+-          status = wuffs_base__make_status(wuffs_json__error__bad_input);
+-          goto exit;
+-        }
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
+-        continue;
+-      }
+-      v_c4 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
+-      if ((v_c4 | 2105376u) == 6712937u) {
+-        if (((uint64_t)(io2_a_src - iop_a_src)) > 7u) {
+-          if ((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) | 2314885530818453536u) == 8751735898823356009u) {
+-            *iop_a_dst++ = wuffs_base__make_token(
+-                (((uint64_t)(10485792u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                (((uint64_t)(8u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-            iop_a_src += 8u;
+-            status = wuffs_base__make_status(NULL);
+-            goto ok;
+-          }
+-        } else if ( ! (a_src && a_src->meta.closed)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
+-          continue;
+-        }
+-        *iop_a_dst++ = wuffs_base__make_token(
+-            (((uint64_t)(10485792u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-            (((uint64_t)(3u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-        iop_a_src += 3u;
+-        status = wuffs_base__make_status(NULL);
+-        goto ok;
+-      } else if ((v_c4 | 2105376u) == 7233902u) {
+-        *iop_a_dst++ = wuffs_base__make_token(
+-            (((uint64_t)(10485888u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-            (((uint64_t)(3u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-        iop_a_src += 3u;
+-        status = wuffs_base__make_status(NULL);
+-        goto ok;
+-      } else if ((v_c4 & 255u) == 43u) {
+-        v_neg = 0u;
+-      } else if ((v_c4 & 255u) == 45u) {
+-        v_neg = 1u;
+-      } else {
+-        status = wuffs_base__make_status(wuffs_json__error__bad_input);
+-        goto exit;
+-      }
+-      if (((uint64_t)(io2_a_src - iop_a_src)) <= 3u) {
+-        if (a_src && a_src->meta.closed) {
+-          status = wuffs_base__make_status(wuffs_json__error__bad_input);
+-          goto exit;
+-        }
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
+-        continue;
+-      }
+-      v_c4 = (wuffs_base__peek_u32le__no_bounds_check(iop_a_src) >> 8u);
+-      if ((v_c4 | 2105376u) == 6712937u) {
+-        if (((uint64_t)(io2_a_src - iop_a_src)) > 8u) {
+-          if ((wuffs_base__peek_u64le__no_bounds_check(iop_a_src + 1u) | 2314885530818453536u) == 8751735898823356009u) {
+-            *iop_a_dst++ = wuffs_base__make_token(
+-                (((uint64_t)((10485760u | (((uint32_t)(32u)) >> v_neg)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                (((uint64_t)(9u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-            iop_a_src += 9u;
+-            status = wuffs_base__make_status(NULL);
+-            goto ok;
+-          }
+-        } else if ( ! (a_src && a_src->meta.closed)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
+-          continue;
+-        }
+-        *iop_a_dst++ = wuffs_base__make_token(
+-            (((uint64_t)((10485760u | (((uint32_t)(32u)) >> v_neg)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-            (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-        iop_a_src += 4u;
+-        status = wuffs_base__make_status(NULL);
+-        goto ok;
+-      } else if ((v_c4 | 2105376u) == 7233902u) {
+-        *iop_a_dst++ = wuffs_base__make_token(
+-            (((uint64_t)((10485760u | (((uint32_t)(128u)) >> v_neg)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-            (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-        iop_a_src += 4u;
+-        status = wuffs_base__make_status(NULL);
+-        goto ok;
+-      }
+-      status = wuffs_base__make_status(wuffs_json__error__bad_input);
+-      goto exit;
+-    }
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_1_distance_4_fallback(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr) {
++  wuffs_base__slice_u8 v_curr = {0};
++  uint8_t v_fa0 = 0;
++  uint8_t v_fa1 = 0;
++  uint8_t v_fa2 = 0;
++  uint8_t v_fa3 = 0;
+ 
+-    ok:
+-    self->private_impl.p_decode_inf_nan[0] = 0;
+-    goto exit;
++  {
++    wuffs_base__slice_u8 i_slice_curr = a_curr;
++    v_curr.ptr = i_slice_curr.ptr;
++    v_curr.len = 4;
++    const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
++    while (v_curr.ptr < i_end0_curr) {
++      v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0u]));
++      v_curr.ptr[0u] = v_fa0;
++      v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1u]));
++      v_curr.ptr[1u] = v_fa1;
++      v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2u]));
++      v_curr.ptr[2u] = v_fa2;
++      v_fa3 = ((uint8_t)(v_fa3 + v_curr.ptr[3u]));
++      v_curr.ptr[3u] = v_fa3;
++      v_curr.ptr += 4;
++    }
++    v_curr.len = 0;
+   }
++  return wuffs_base__make_empty_struct();
++}
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_inf_nan[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++// -------- func png.decoder.filter_2
+ 
+-  goto exit;
+-  exit:
+-  if (a_dst && a_dst->data.ptr) {
+-    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-  }
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_2(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev) {
++  uint64_t v_n = 0;
++  uint64_t v_i = 0;
+ 
+-  return status;
++  v_n = wuffs_base__u64__min(((uint64_t)(a_curr.len)), ((uint64_t)(a_prev.len)));
++  v_i = 0u;
++  while (v_i < v_n) {
++    a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + a_prev.ptr[v_i]));
++    v_i += 1u;
++  }
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-// -------- func json.decoder.decode_trailer
++// -------- func png.decoder.filter_3
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_json__decoder__decode_trailer(
+-    wuffs_json__decoder* self,
+-    wuffs_base__token_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_3(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev) {
++  return (*self->private_impl.choosy_filter_3)(self, a_curr, a_prev);
++}
+ 
+-  uint8_t v_c = 0;
+-  uint32_t v_whitespace_length = 0;
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_3__choosy_default(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev) {
++  uint64_t v_filter_distance = 0;
++  uint64_t v_n = 0;
++  uint64_t v_i = 0;
+ 
+-  wuffs_base__token* iop_a_dst = NULL;
+-  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_dst && a_dst->data.ptr) {
+-    io0_a_dst = a_dst->data.ptr;
+-    io1_a_dst = io0_a_dst + a_dst->meta.wi;
+-    iop_a_dst = io1_a_dst;
+-    io2_a_dst = io0_a_dst + a_dst->data.len;
+-    if (a_dst->meta.closed) {
+-      io2_a_dst = iop_a_dst;
++  v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance));
++  if (((uint64_t)(a_prev.len)) == 0u) {
++    v_i = v_filter_distance;
++    while (v_i < ((uint64_t)(a_curr.len))) {
++      a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + ((uint8_t)(a_curr.ptr[(v_i - v_filter_distance)] / 2u))));
++      v_i += 1u;
++    }
++  } else {
++    v_n = wuffs_base__u64__min(((uint64_t)(a_curr.len)), ((uint64_t)(a_prev.len)));
++    v_i = 0u;
++    while ((v_i < v_n) && (v_i < v_filter_distance)) {
++      a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + ((uint8_t)(a_prev.ptr[v_i] / 2u))));
++      v_i += 1u;
++    }
++    v_i = v_filter_distance;
++    while (v_i < v_n) {
++      a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + ((uint8_t)(((((uint32_t)(a_curr.ptr[(v_i - v_filter_distance)])) + ((uint32_t)(a_prev.ptr[v_i]))) / 2u)))));
++      v_i += 1u;
+     }
+   }
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
++  return wuffs_base__make_empty_struct();
++}
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_trailer[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++// -------- func png.decoder.filter_3_distance_3_fallback
+ 
+-    if (self->private_impl.f_quirks[18u]) {
+-      self->private_impl.f_trailer_stop = 10u;
+-    } else {
+-      self->private_impl.f_trailer_stop = 0u;
+-    }
+-    label__outer__continue:;
+-    while (true) {
+-      if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+-        continue;
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_3_distance_3_fallback(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev) {
++  wuffs_base__slice_u8 v_curr = {0};
++  wuffs_base__slice_u8 v_prev = {0};
++  uint8_t v_fa0 = 0;
++  uint8_t v_fa1 = 0;
++  uint8_t v_fa2 = 0;
++
++  if (((uint64_t)(a_prev.len)) == 0u) {
++    {
++      wuffs_base__slice_u8 i_slice_curr = a_curr;
++      v_curr.ptr = i_slice_curr.ptr;
++      v_curr.len = 3;
++      const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 6) * 6));
++      while (v_curr.ptr < i_end0_curr) {
++        v_fa0 = ((uint8_t)(((uint8_t)(v_fa0 / 2u)) + v_curr.ptr[0u]));
++        v_curr.ptr[0u] = v_fa0;
++        v_fa1 = ((uint8_t)(((uint8_t)(v_fa1 / 2u)) + v_curr.ptr[1u]));
++        v_curr.ptr[1u] = v_fa1;
++        v_fa2 = ((uint8_t)(((uint8_t)(v_fa2 / 2u)) + v_curr.ptr[2u]));
++        v_curr.ptr[2u] = v_fa2;
++        v_curr.ptr += 3;
++        v_fa0 = ((uint8_t)(((uint8_t)(v_fa0 / 2u)) + v_curr.ptr[0u]));
++        v_curr.ptr[0u] = v_fa0;
++        v_fa1 = ((uint8_t)(((uint8_t)(v_fa1 / 2u)) + v_curr.ptr[1u]));
++        v_curr.ptr[1u] = v_fa1;
++        v_fa2 = ((uint8_t)(((uint8_t)(v_fa2 / 2u)) + v_curr.ptr[2u]));
++        v_curr.ptr[2u] = v_fa2;
++        v_curr.ptr += 3;
+       }
+-      v_whitespace_length = 0u;
+-      while (true) {
+-        if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-          if (v_whitespace_length > 0u) {
+-            *iop_a_dst++ = wuffs_base__make_token(
+-                (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-          }
+-          if (a_src && a_src->meta.closed) {
+-            goto label__outer__break;
+-          }
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
+-          goto label__outer__continue;
+-        }
+-        v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-        if (WUFFS_JSON__LUT_CLASSES[v_c] != 0u) {
+-          if (v_whitespace_length > 0u) {
+-            *iop_a_dst++ = wuffs_base__make_token(
+-                (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-                (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-          }
+-          if (self->private_impl.f_trailer_stop > 0u) {
+-            status = wuffs_base__make_status(wuffs_json__error__bad_input);
+-            goto exit;
+-          }
+-          if (a_dst) {
+-            a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-          }
+-          if (a_src) {
+-            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-          }
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-          status = wuffs_json__decoder__decode_comment(self, a_dst, a_src);
+-          if (a_dst) {
+-            iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
+-          }
+-          if (a_src) {
+-            iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-          }
+-          if (status.repr) {
+-            goto suspend;
+-          }
+-          if (self->private_impl.f_comment_type > 0u) {
+-            goto label__outer__continue;
+-          }
+-          status = wuffs_base__make_status(NULL);
+-          goto ok;
+-        }
+-        iop_a_src += 1u;
+-        if ((v_whitespace_length >= 65534u) || (v_c == self->private_impl.f_trailer_stop)) {
+-          *iop_a_dst++ = wuffs_base__make_token(
+-              (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
+-              (((uint64_t)((v_whitespace_length + 1u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
+-          if (v_c == self->private_impl.f_trailer_stop) {
+-            status = wuffs_base__make_status(NULL);
+-            goto ok;
+-          }
+-          goto label__outer__continue;
+-        }
+-        v_whitespace_length += 1u;
++      v_curr.len = 3;
++      const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3));
++      while (v_curr.ptr < i_end1_curr) {
++        v_fa0 = ((uint8_t)(((uint8_t)(v_fa0 / 2u)) + v_curr.ptr[0u]));
++        v_curr.ptr[0u] = v_fa0;
++        v_fa1 = ((uint8_t)(((uint8_t)(v_fa1 / 2u)) + v_curr.ptr[1u]));
++        v_curr.ptr[1u] = v_fa1;
++        v_fa2 = ((uint8_t)(((uint8_t)(v_fa2 / 2u)) + v_curr.ptr[2u]));
++        v_curr.ptr[2u] = v_fa2;
++        v_curr.ptr += 3;
+       }
++      v_curr.len = 0;
++    }
++  } else {
++    {
++      wuffs_base__slice_u8 i_slice_curr = a_curr;
++      v_curr.ptr = i_slice_curr.ptr;
++      wuffs_base__slice_u8 i_slice_prev = a_prev;
++      v_prev.ptr = i_slice_prev.ptr;
++      i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
++      v_curr.len = 3;
++      v_prev.len = 3;
++      const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 6) * 6));
++      while (v_curr.ptr < i_end0_curr) {
++        v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0u]))) / 2u))) + v_curr.ptr[0u]));
++        v_curr.ptr[0u] = v_fa0;
++        v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1u]))) / 2u))) + v_curr.ptr[1u]));
++        v_curr.ptr[1u] = v_fa1;
++        v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2u]))) / 2u))) + v_curr.ptr[2u]));
++        v_curr.ptr[2u] = v_fa2;
++        v_curr.ptr += 3;
++        v_prev.ptr += 3;
++        v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0u]))) / 2u))) + v_curr.ptr[0u]));
++        v_curr.ptr[0u] = v_fa0;
++        v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1u]))) / 2u))) + v_curr.ptr[1u]));
++        v_curr.ptr[1u] = v_fa1;
++        v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2u]))) / 2u))) + v_curr.ptr[2u]));
++        v_curr.ptr[2u] = v_fa2;
++        v_curr.ptr += 3;
++        v_prev.ptr += 3;
++      }
++      v_curr.len = 3;
++      v_prev.len = 3;
++      const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3));
++      while (v_curr.ptr < i_end1_curr) {
++        v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0u]))) / 2u))) + v_curr.ptr[0u]));
++        v_curr.ptr[0u] = v_fa0;
++        v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1u]))) / 2u))) + v_curr.ptr[1u]));
++        v_curr.ptr[1u] = v_fa1;
++        v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2u]))) / 2u))) + v_curr.ptr[2u]));
++        v_curr.ptr[2u] = v_fa2;
++        v_curr.ptr += 3;
++        v_prev.ptr += 3;
++      }
++      v_curr.len = 0;
++      v_prev.len = 0;
+     }
+-    label__outer__break:;
+-
+-    ok:
+-    self->private_impl.p_decode_trailer[0] = 0;
+-    goto exit;
+-  }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_trailer[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-
+-  goto exit;
+-  exit:
+-  if (a_dst && a_dst->data.ptr) {
+-    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-  }
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+-
+-  return status;
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JSON)
+-
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW)
+-
+-// ---------------- Status Codes Implementations
+-
+-const char wuffs_lzw__error__bad_code[] = "#lzw: bad code";
+-const char wuffs_lzw__error__truncated_input[] = "#lzw: truncated input";
+-const char wuffs_lzw__error__internal_error_inconsistent_i_o[] = "#lzw: internal error: inconsistent I/O";
+-
+-// ---------------- Private Consts
+-
+-#define WUFFS_LZW__QUIRKS_BASE 1348378624
+-
+-// ---------------- Private Initializer Prototypes
+-
+-// ---------------- Private Function Prototypes
++// -------- func png.decoder.filter_3_distance_4_fallback
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__empty_struct
+-wuffs_lzw__decoder__read_from(
+-    wuffs_lzw__decoder* self,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_lzw__decoder__write_to(
+-    wuffs_lzw__decoder* self,
+-    wuffs_base__io_buffer* a_dst);
+-
+-// ---------------- VTables
+-
+-const wuffs_base__io_transformer__func_ptrs
+-wuffs_lzw__decoder__func_ptrs_for__wuffs_base__io_transformer = {
+-  (uint64_t(*)(const void*,
+-      uint32_t))(&wuffs_lzw__decoder__get_quirk),
+-  (uint64_t(*)(const void*))(&wuffs_lzw__decoder__history_retain_length),
+-  (wuffs_base__status(*)(void*,
+-      uint32_t,
+-      uint64_t))(&wuffs_lzw__decoder__set_quirk),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__slice_u8))(&wuffs_lzw__decoder__transform_io),
+-  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_lzw__decoder__workbuf_len),
+-};
+-
+-// ---------------- Initializer Implementations
+-
+-wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_lzw__decoder__initialize(
+-    wuffs_lzw__decoder* self,
+-    size_t sizeof_star_self,
+-    uint64_t wuffs_version,
+-    uint32_t options){
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (sizeof(*self) != sizeof_star_self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
+-  }
+-  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
+-      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
+-  }
++wuffs_png__decoder__filter_3_distance_4_fallback(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev) {
++  wuffs_base__slice_u8 v_curr = {0};
++  wuffs_base__slice_u8 v_prev = {0};
++  uint8_t v_fa0 = 0;
++  uint8_t v_fa1 = 0;
++  uint8_t v_fa2 = 0;
++  uint8_t v_fa3 = 0;
+ 
+-  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
+-    // The whole point of this if-check is to detect an uninitialized *self.
+-    // We disable the warning on GCC. Clang-5.0 does not have this warning.
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+-#endif
+-    if (self->private_impl.magic != 0) {
+-      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++  if (((uint64_t)(a_prev.len)) == 0u) {
++    {
++      wuffs_base__slice_u8 i_slice_curr = a_curr;
++      v_curr.ptr = i_slice_curr.ptr;
++      v_curr.len = 4;
++      const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
++      while (v_curr.ptr < i_end0_curr) {
++        v_fa0 = ((uint8_t)(((uint8_t)(v_fa0 / 2u)) + v_curr.ptr[0u]));
++        v_curr.ptr[0u] = v_fa0;
++        v_fa1 = ((uint8_t)(((uint8_t)(v_fa1 / 2u)) + v_curr.ptr[1u]));
++        v_curr.ptr[1u] = v_fa1;
++        v_fa2 = ((uint8_t)(((uint8_t)(v_fa2 / 2u)) + v_curr.ptr[2u]));
++        v_curr.ptr[2u] = v_fa2;
++        v_fa3 = ((uint8_t)(((uint8_t)(v_fa3 / 2u)) + v_curr.ptr[3u]));
++        v_curr.ptr[3u] = v_fa3;
++        v_curr.ptr += 4;
++      }
++      v_curr.len = 0;
+     }
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+   } else {
+-    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
+-      memset(self, 0, sizeof(*self));
+-      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
+-    } else {
+-      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++    {
++      wuffs_base__slice_u8 i_slice_curr = a_curr;
++      v_curr.ptr = i_slice_curr.ptr;
++      wuffs_base__slice_u8 i_slice_prev = a_prev;
++      v_prev.ptr = i_slice_prev.ptr;
++      i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
++      v_curr.len = 4;
++      v_prev.len = 4;
++      const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
++      while (v_curr.ptr < i_end0_curr) {
++        v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0u]))) / 2u))) + v_curr.ptr[0u]));
++        v_curr.ptr[0u] = v_fa0;
++        v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1u]))) / 2u))) + v_curr.ptr[1u]));
++        v_curr.ptr[1u] = v_fa1;
++        v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2u]))) / 2u))) + v_curr.ptr[2u]));
++        v_curr.ptr[2u] = v_fa2;
++        v_fa3 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa3)) + ((uint32_t)(v_prev.ptr[3u]))) / 2u))) + v_curr.ptr[3u]));
++        v_curr.ptr[3u] = v_fa3;
++        v_curr.ptr += 4;
++        v_prev.ptr += 4;
++      }
++      v_curr.len = 0;
++      v_prev.len = 0;
+     }
+   }
+-
+-  self->private_impl.magic = WUFFS_BASE__MAGIC;
+-  self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
+-      wuffs_base__io_transformer__vtable_name;
+-  self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
+-      (const void*)(&wuffs_lzw__decoder__func_ptrs_for__wuffs_base__io_transformer);
+-  return wuffs_base__make_status(NULL);
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-wuffs_lzw__decoder*
+-wuffs_lzw__decoder__alloc(void) {
+-  wuffs_lzw__decoder* x =
+-      (wuffs_lzw__decoder*)(calloc(sizeof(wuffs_lzw__decoder), 1));
+-  if (!x) {
+-    return NULL;
+-  }
+-  if (wuffs_lzw__decoder__initialize(
+-      x, sizeof(wuffs_lzw__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
+-    free(x);
+-    return NULL;
+-  }
+-  return x;
+-}
++// -------- func png.decoder.filter_4
+ 
+-size_t
+-sizeof__wuffs_lzw__decoder(void) {
+-  return sizeof(wuffs_lzw__decoder);
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_4(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev) {
++  return (*self->private_impl.choosy_filter_4)(self, a_curr, a_prev);
+ }
+ 
+-// ---------------- Function Implementations
+-
+-// -------- func lzw.decoder.get_quirk
+-
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_lzw__decoder__get_quirk(
+-    const wuffs_lzw__decoder* self,
+-    uint32_t a_key) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_4__choosy_default(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev) {
++  uint64_t v_filter_distance = 0;
++  uint64_t v_n = 0;
++  uint64_t v_i = 0;
++  uint32_t v_fa = 0;
++  uint32_t v_fb = 0;
++  uint32_t v_fc = 0;
++  uint32_t v_pp = 0;
++  uint32_t v_pa = 0;
++  uint32_t v_pb = 0;
++  uint32_t v_pc = 0;
+ 
+-  if (a_key == 1348378624u) {
+-    return ((uint64_t)(self->private_impl.f_pending_literal_width_plus_one));
++  v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance));
++  v_n = wuffs_base__u64__min(((uint64_t)(a_curr.len)), ((uint64_t)(a_prev.len)));
++  v_i = 0u;
++  while ((v_i < v_n) && (v_i < v_filter_distance)) {
++    a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + a_prev.ptr[v_i]));
++    v_i += 1u;
+   }
+-  return 0u;
++  v_i = v_filter_distance;
++  while (v_i < v_n) {
++    v_fa = ((uint32_t)(a_curr.ptr[(v_i - v_filter_distance)]));
++    v_fb = ((uint32_t)(a_prev.ptr[v_i]));
++    v_fc = ((uint32_t)(a_prev.ptr[(v_i - v_filter_distance)]));
++    v_pp = ((uint32_t)(((uint32_t)(v_fa + v_fb)) - v_fc));
++    v_pa = ((uint32_t)(v_pp - v_fa));
++    if (v_pa >= 2147483648u) {
++      v_pa = ((uint32_t)(0u - v_pa));
++    }
++    v_pb = ((uint32_t)(v_pp - v_fb));
++    if (v_pb >= 2147483648u) {
++      v_pb = ((uint32_t)(0u - v_pb));
++    }
++    v_pc = ((uint32_t)(v_pp - v_fc));
++    if (v_pc >= 2147483648u) {
++      v_pc = ((uint32_t)(0u - v_pc));
++    }
++    if ((v_pa <= v_pb) && (v_pa <= v_pc)) {
++    } else if (v_pb <= v_pc) {
++      v_fa = v_fb;
++    } else {
++      v_fa = v_fc;
++    }
++    a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + ((uint8_t)(v_fa))));
++    v_i += 1u;
++  }
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-// -------- func lzw.decoder.set_quirk
++// -------- func png.decoder.filter_4_distance_3_fallback
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_lzw__decoder__set_quirk(
+-    wuffs_lzw__decoder* self,
+-    uint32_t a_key,
+-    uint64_t a_value) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_4_distance_3_fallback(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev) {
++  wuffs_base__slice_u8 v_curr = {0};
++  wuffs_base__slice_u8 v_prev = {0};
++  uint32_t v_fa0 = 0;
++  uint32_t v_fa1 = 0;
++  uint32_t v_fa2 = 0;
++  uint32_t v_fb0 = 0;
++  uint32_t v_fb1 = 0;
++  uint32_t v_fb2 = 0;
++  uint32_t v_fc0 = 0;
++  uint32_t v_fc1 = 0;
++  uint32_t v_fc2 = 0;
++  uint32_t v_pp0 = 0;
++  uint32_t v_pp1 = 0;
++  uint32_t v_pp2 = 0;
++  uint32_t v_pa0 = 0;
++  uint32_t v_pa1 = 0;
++  uint32_t v_pa2 = 0;
++  uint32_t v_pb0 = 0;
++  uint32_t v_pb1 = 0;
++  uint32_t v_pb2 = 0;
++  uint32_t v_pc0 = 0;
++  uint32_t v_pc1 = 0;
++  uint32_t v_pc2 = 0;
+ 
+-  if (a_key == 1348378624u) {
+-    if (a_value > 9u) {
+-      return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  {
++    wuffs_base__slice_u8 i_slice_curr = a_curr;
++    v_curr.ptr = i_slice_curr.ptr;
++    wuffs_base__slice_u8 i_slice_prev = a_prev;
++    v_prev.ptr = i_slice_prev.ptr;
++    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
++    v_curr.len = 3;
++    v_prev.len = 3;
++    const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3));
++    while (v_curr.ptr < i_end0_curr) {
++      v_fb0 = ((uint32_t)(v_prev.ptr[0u]));
++      v_pp0 = ((uint32_t)(((uint32_t)(v_fa0 + v_fb0)) - v_fc0));
++      v_pa0 = ((uint32_t)(v_pp0 - v_fa0));
++      if (v_pa0 >= 2147483648u) {
++        v_pa0 = ((uint32_t)(0u - v_pa0));
++      }
++      v_pb0 = ((uint32_t)(v_pp0 - v_fb0));
++      if (v_pb0 >= 2147483648u) {
++        v_pb0 = ((uint32_t)(0u - v_pb0));
++      }
++      v_pc0 = ((uint32_t)(v_pp0 - v_fc0));
++      if (v_pc0 >= 2147483648u) {
++        v_pc0 = ((uint32_t)(0u - v_pc0));
++      }
++      if ((v_pa0 <= v_pb0) && (v_pa0 <= v_pc0)) {
++      } else if (v_pb0 <= v_pc0) {
++        v_fa0 = v_fb0;
++      } else {
++        v_fa0 = v_fc0;
++      }
++      v_curr.ptr[0u] = ((uint8_t)(v_curr.ptr[0u] + ((uint8_t)(v_fa0))));
++      v_fa0 = ((uint32_t)(v_curr.ptr[0u]));
++      v_fc0 = v_fb0;
++      v_fb1 = ((uint32_t)(v_prev.ptr[1u]));
++      v_pp1 = ((uint32_t)(((uint32_t)(v_fa1 + v_fb1)) - v_fc1));
++      v_pa1 = ((uint32_t)(v_pp1 - v_fa1));
++      if (v_pa1 >= 2147483648u) {
++        v_pa1 = ((uint32_t)(0u - v_pa1));
++      }
++      v_pb1 = ((uint32_t)(v_pp1 - v_fb1));
++      if (v_pb1 >= 2147483648u) {
++        v_pb1 = ((uint32_t)(0u - v_pb1));
++      }
++      v_pc1 = ((uint32_t)(v_pp1 - v_fc1));
++      if (v_pc1 >= 2147483648u) {
++        v_pc1 = ((uint32_t)(0u - v_pc1));
++      }
++      if ((v_pa1 <= v_pb1) && (v_pa1 <= v_pc1)) {
++      } else if (v_pb1 <= v_pc1) {
++        v_fa1 = v_fb1;
++      } else {
++        v_fa1 = v_fc1;
++      }
++      v_curr.ptr[1u] = ((uint8_t)(v_curr.ptr[1u] + ((uint8_t)(v_fa1))));
++      v_fa1 = ((uint32_t)(v_curr.ptr[1u]));
++      v_fc1 = v_fb1;
++      v_fb2 = ((uint32_t)(v_prev.ptr[2u]));
++      v_pp2 = ((uint32_t)(((uint32_t)(v_fa2 + v_fb2)) - v_fc2));
++      v_pa2 = ((uint32_t)(v_pp2 - v_fa2));
++      if (v_pa2 >= 2147483648u) {
++        v_pa2 = ((uint32_t)(0u - v_pa2));
++      }
++      v_pb2 = ((uint32_t)(v_pp2 - v_fb2));
++      if (v_pb2 >= 2147483648u) {
++        v_pb2 = ((uint32_t)(0u - v_pb2));
++      }
++      v_pc2 = ((uint32_t)(v_pp2 - v_fc2));
++      if (v_pc2 >= 2147483648u) {
++        v_pc2 = ((uint32_t)(0u - v_pc2));
++      }
++      if ((v_pa2 <= v_pb2) && (v_pa2 <= v_pc2)) {
++      } else if (v_pb2 <= v_pc2) {
++        v_fa2 = v_fb2;
++      } else {
++        v_fa2 = v_fc2;
++      }
++      v_curr.ptr[2u] = ((uint8_t)(v_curr.ptr[2u] + ((uint8_t)(v_fa2))));
++      v_fa2 = ((uint32_t)(v_curr.ptr[2u]));
++      v_fc2 = v_fb2;
++      v_curr.ptr += 3;
++      v_prev.ptr += 3;
+     }
+-    self->private_impl.f_pending_literal_width_plus_one = ((uint32_t)(a_value));
+-    return wuffs_base__make_status(NULL);
++    v_curr.len = 0;
++    v_prev.len = 0;
+   }
+-  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-// -------- func lzw.decoder.history_retain_length
++// -------- func png.decoder.filter_4_distance_4_fallback
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_lzw__decoder__history_retain_length(
+-    const wuffs_lzw__decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
+-
+-  return 0u;
+-}
+-
+-// -------- func lzw.decoder.workbuf_len
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_4_distance_4_fallback(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev) {
++  wuffs_base__slice_u8 v_curr = {0};
++  wuffs_base__slice_u8 v_prev = {0};
++  uint32_t v_fa0 = 0;
++  uint32_t v_fa1 = 0;
++  uint32_t v_fa2 = 0;
++  uint32_t v_fa3 = 0;
++  uint32_t v_fb0 = 0;
++  uint32_t v_fb1 = 0;
++  uint32_t v_fb2 = 0;
++  uint32_t v_fb3 = 0;
++  uint32_t v_fc0 = 0;
++  uint32_t v_fc1 = 0;
++  uint32_t v_fc2 = 0;
++  uint32_t v_fc3 = 0;
++  uint32_t v_pp0 = 0;
++  uint32_t v_pp1 = 0;
++  uint32_t v_pp2 = 0;
++  uint32_t v_pp3 = 0;
++  uint32_t v_pa0 = 0;
++  uint32_t v_pa1 = 0;
++  uint32_t v_pa2 = 0;
++  uint32_t v_pa3 = 0;
++  uint32_t v_pb0 = 0;
++  uint32_t v_pb1 = 0;
++  uint32_t v_pb2 = 0;
++  uint32_t v_pb3 = 0;
++  uint32_t v_pc0 = 0;
++  uint32_t v_pc1 = 0;
++  uint32_t v_pc2 = 0;
++  uint32_t v_pc3 = 0;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_lzw__decoder__workbuf_len(
+-    const wuffs_lzw__decoder* self) {
+-  if (!self) {
+-    return wuffs_base__utility__empty_range_ii_u64();
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_range_ii_u64();
++  {
++    wuffs_base__slice_u8 i_slice_curr = a_curr;
++    v_curr.ptr = i_slice_curr.ptr;
++    wuffs_base__slice_u8 i_slice_prev = a_prev;
++    v_prev.ptr = i_slice_prev.ptr;
++    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
++    v_curr.len = 4;
++    v_prev.len = 4;
++    const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
++    while (v_curr.ptr < i_end0_curr) {
++      v_fb0 = ((uint32_t)(v_prev.ptr[0u]));
++      v_pp0 = ((uint32_t)(((uint32_t)(v_fa0 + v_fb0)) - v_fc0));
++      v_pa0 = ((uint32_t)(v_pp0 - v_fa0));
++      if (v_pa0 >= 2147483648u) {
++        v_pa0 = ((uint32_t)(0u - v_pa0));
++      }
++      v_pb0 = ((uint32_t)(v_pp0 - v_fb0));
++      if (v_pb0 >= 2147483648u) {
++        v_pb0 = ((uint32_t)(0u - v_pb0));
++      }
++      v_pc0 = ((uint32_t)(v_pp0 - v_fc0));
++      if (v_pc0 >= 2147483648u) {
++        v_pc0 = ((uint32_t)(0u - v_pc0));
++      }
++      if ((v_pa0 <= v_pb0) && (v_pa0 <= v_pc0)) {
++      } else if (v_pb0 <= v_pc0) {
++        v_fa0 = v_fb0;
++      } else {
++        v_fa0 = v_fc0;
++      }
++      v_curr.ptr[0u] = ((uint8_t)(v_curr.ptr[0u] + ((uint8_t)(v_fa0))));
++      v_fa0 = ((uint32_t)(v_curr.ptr[0u]));
++      v_fc0 = v_fb0;
++      v_fb1 = ((uint32_t)(v_prev.ptr[1u]));
++      v_pp1 = ((uint32_t)(((uint32_t)(v_fa1 + v_fb1)) - v_fc1));
++      v_pa1 = ((uint32_t)(v_pp1 - v_fa1));
++      if (v_pa1 >= 2147483648u) {
++        v_pa1 = ((uint32_t)(0u - v_pa1));
++      }
++      v_pb1 = ((uint32_t)(v_pp1 - v_fb1));
++      if (v_pb1 >= 2147483648u) {
++        v_pb1 = ((uint32_t)(0u - v_pb1));
++      }
++      v_pc1 = ((uint32_t)(v_pp1 - v_fc1));
++      if (v_pc1 >= 2147483648u) {
++        v_pc1 = ((uint32_t)(0u - v_pc1));
++      }
++      if ((v_pa1 <= v_pb1) && (v_pa1 <= v_pc1)) {
++      } else if (v_pb1 <= v_pc1) {
++        v_fa1 = v_fb1;
++      } else {
++        v_fa1 = v_fc1;
++      }
++      v_curr.ptr[1u] = ((uint8_t)(v_curr.ptr[1u] + ((uint8_t)(v_fa1))));
++      v_fa1 = ((uint32_t)(v_curr.ptr[1u]));
++      v_fc1 = v_fb1;
++      v_fb2 = ((uint32_t)(v_prev.ptr[2u]));
++      v_pp2 = ((uint32_t)(((uint32_t)(v_fa2 + v_fb2)) - v_fc2));
++      v_pa2 = ((uint32_t)(v_pp2 - v_fa2));
++      if (v_pa2 >= 2147483648u) {
++        v_pa2 = ((uint32_t)(0u - v_pa2));
++      }
++      v_pb2 = ((uint32_t)(v_pp2 - v_fb2));
++      if (v_pb2 >= 2147483648u) {
++        v_pb2 = ((uint32_t)(0u - v_pb2));
++      }
++      v_pc2 = ((uint32_t)(v_pp2 - v_fc2));
++      if (v_pc2 >= 2147483648u) {
++        v_pc2 = ((uint32_t)(0u - v_pc2));
++      }
++      if ((v_pa2 <= v_pb2) && (v_pa2 <= v_pc2)) {
++      } else if (v_pb2 <= v_pc2) {
++        v_fa2 = v_fb2;
++      } else {
++        v_fa2 = v_fc2;
++      }
++      v_curr.ptr[2u] = ((uint8_t)(v_curr.ptr[2u] + ((uint8_t)(v_fa2))));
++      v_fa2 = ((uint32_t)(v_curr.ptr[2u]));
++      v_fc2 = v_fb2;
++      v_fb3 = ((uint32_t)(v_prev.ptr[3u]));
++      v_pp3 = ((uint32_t)(((uint32_t)(v_fa3 + v_fb3)) - v_fc3));
++      v_pa3 = ((uint32_t)(v_pp3 - v_fa3));
++      if (v_pa3 >= 2147483648u) {
++        v_pa3 = ((uint32_t)(0u - v_pa3));
++      }
++      v_pb3 = ((uint32_t)(v_pp3 - v_fb3));
++      if (v_pb3 >= 2147483648u) {
++        v_pb3 = ((uint32_t)(0u - v_pb3));
++      }
++      v_pc3 = ((uint32_t)(v_pp3 - v_fc3));
++      if (v_pc3 >= 2147483648u) {
++        v_pc3 = ((uint32_t)(0u - v_pc3));
++      }
++      if ((v_pa3 <= v_pb3) && (v_pa3 <= v_pc3)) {
++      } else if (v_pb3 <= v_pc3) {
++        v_fa3 = v_fb3;
++      } else {
++        v_fa3 = v_fc3;
++      }
++      v_curr.ptr[3u] = ((uint8_t)(v_curr.ptr[3u] + ((uint8_t)(v_fa3))));
++      v_fa3 = ((uint32_t)(v_curr.ptr[3u]));
++      v_fc3 = v_fb3;
++      v_curr.ptr += 4;
++      v_prev.ptr += 4;
++    }
++    v_curr.len = 0;
++    v_prev.len = 0;
+   }
+-
+-  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-// -------- func lzw.decoder.transform_io
++// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
++// -------- func png.decoder.filter_1_distance_4_x86_sse42
+ 
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_lzw__decoder__transform_io(
+-    wuffs_lzw__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__slice_u8 a_workbuf) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-  if (!a_dst || !a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 1)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+-  }
+-  self->private_impl.active_coroutine = 0;
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  uint32_t v_i = 0;
+-
+-  uint32_t coro_susp_point = self->private_impl.p_transform_io[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_1_distance_4_x86_sse42(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr) {
++  wuffs_base__slice_u8 v_curr = {0};
++  __m128i v_x128 = {0};
++  __m128i v_a128 = {0};
+ 
+-    self->private_impl.f_literal_width = 8u;
+-    if (self->private_impl.f_pending_literal_width_plus_one > 0u) {
+-      self->private_impl.f_literal_width = (self->private_impl.f_pending_literal_width_plus_one - 1u);
+-    }
+-    self->private_impl.f_clear_code = (((uint32_t)(1u)) << self->private_impl.f_literal_width);
+-    self->private_impl.f_end_code = (self->private_impl.f_clear_code + 1u);
+-    self->private_impl.f_save_code = self->private_impl.f_end_code;
+-    self->private_impl.f_prev_code = self->private_impl.f_end_code;
+-    self->private_impl.f_width = (self->private_impl.f_literal_width + 1u);
+-    self->private_impl.f_bits = 0u;
+-    self->private_impl.f_n_bits = 0u;
+-    self->private_impl.f_output_ri = 0u;
+-    self->private_impl.f_output_wi = 0u;
+-    v_i = 0u;
+-    while (v_i < self->private_impl.f_clear_code) {
+-      self->private_data.f_lm1s[v_i] = 0u;
+-      self->private_data.f_suffixes[v_i][0u] = ((uint8_t)(v_i));
+-      v_i += 1u;
++  {
++    wuffs_base__slice_u8 i_slice_curr = a_curr;
++    v_curr.ptr = i_slice_curr.ptr;
++    v_curr.len = 4;
++    const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8));
++    while (v_curr.ptr < i_end0_curr) {
++      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++      v_x128 = _mm_add_epi8(v_x128, v_a128);
++      v_a128 = v_x128;
++      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
++      v_curr.ptr += 4;
++      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++      v_x128 = _mm_add_epi8(v_x128, v_a128);
++      v_a128 = v_x128;
++      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
++      v_curr.ptr += 4;
+     }
+-    while (true) {
+-      wuffs_lzw__decoder__read_from(self, a_src);
+-      if (self->private_impl.f_output_wi > 0u) {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-        status = wuffs_lzw__decoder__write_to(self, a_dst);
+-        if (status.repr) {
+-          goto suspend;
+-        }
+-      }
+-      if (self->private_impl.f_read_from_return_value == 0u) {
+-        break;
+-      } else if (self->private_impl.f_read_from_return_value == 1u) {
+-        continue;
+-      } else if (self->private_impl.f_read_from_return_value == 2u) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
+-      } else if (self->private_impl.f_read_from_return_value == 3u) {
+-        status = wuffs_base__make_status(wuffs_lzw__error__truncated_input);
+-        goto exit;
+-      } else if (self->private_impl.f_read_from_return_value == 4u) {
+-        status = wuffs_base__make_status(wuffs_lzw__error__bad_code);
+-        goto exit;
+-      } else {
+-        status = wuffs_base__make_status(wuffs_lzw__error__internal_error_inconsistent_i_o);
+-        goto exit;
+-      }
++    v_curr.len = 4;
++    const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
++    while (v_curr.ptr < i_end1_curr) {
++      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++      v_x128 = _mm_add_epi8(v_x128, v_a128);
++      v_a128 = v_x128;
++      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
++      v_curr.ptr += 4;
+     }
+-
+-    ok:
+-    self->private_impl.p_transform_io[0] = 0;
+-    goto exit;
+-  }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
+-
+-  goto exit;
+-  exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    v_curr.len = 0;
+   }
+-  return status;
++  return wuffs_base__make_empty_struct();
+ }
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
+ 
+-// -------- func lzw.decoder.read_from
++// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
++// -------- func png.decoder.filter_3_distance_4_x86_sse42
+ 
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__empty_struct
+-wuffs_lzw__decoder__read_from(
+-    wuffs_lzw__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
+-  uint32_t v_clear_code = 0;
+-  uint32_t v_end_code = 0;
+-  uint32_t v_save_code = 0;
+-  uint32_t v_prev_code = 0;
+-  uint32_t v_width = 0;
+-  uint32_t v_bits = 0;
+-  uint32_t v_n_bits = 0;
+-  uint32_t v_output_wi = 0;
+-  uint32_t v_code = 0;
+-  uint32_t v_c = 0;
+-  uint32_t v_o = 0;
+-  uint32_t v_steps = 0;
+-  uint8_t v_first_byte = 0;
+-  uint16_t v_lm1_b = 0;
+-  uint16_t v_lm1_a = 0;
+-
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
++wuffs_png__decoder__filter_3_distance_4_x86_sse42(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev) {
++  wuffs_base__slice_u8 v_curr = {0};
++  wuffs_base__slice_u8 v_prev = {0};
++  __m128i v_x128 = {0};
++  __m128i v_a128 = {0};
++  __m128i v_b128 = {0};
++  __m128i v_p128 = {0};
++  __m128i v_k128 = {0};
+ 
+-  v_clear_code = self->private_impl.f_clear_code;
+-  v_end_code = self->private_impl.f_end_code;
+-  v_save_code = self->private_impl.f_save_code;
+-  v_prev_code = self->private_impl.f_prev_code;
+-  v_width = self->private_impl.f_width;
+-  v_bits = self->private_impl.f_bits;
+-  v_n_bits = self->private_impl.f_n_bits;
+-  v_output_wi = self->private_impl.f_output_wi;
+-  while (true) {
+-    if (v_n_bits < v_width) {
+-      if (((uint64_t)(io2_a_src - iop_a_src)) >= 4u) {
+-        v_bits |= ((uint32_t)(wuffs_base__peek_u32le__no_bounds_check(iop_a_src) << v_n_bits));
+-        iop_a_src += ((31u - v_n_bits) >> 3u);
+-        v_n_bits |= 24u;
+-      } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-        if (a_src && a_src->meta.closed) {
+-          self->private_impl.f_read_from_return_value = 3u;
+-        } else {
+-          self->private_impl.f_read_from_return_value = 2u;
+-        }
+-        break;
+-      } else {
+-        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
+-        iop_a_src += 1u;
+-        v_n_bits += 8u;
+-        if (v_n_bits >= v_width) {
+-        } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-          if (a_src && a_src->meta.closed) {
+-            self->private_impl.f_read_from_return_value = 3u;
+-          } else {
+-            self->private_impl.f_read_from_return_value = 2u;
+-          }
+-          break;
+-        } else {
+-          v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
+-          iop_a_src += 1u;
+-          v_n_bits += 8u;
+-          if (v_n_bits < v_width) {
+-            self->private_impl.f_read_from_return_value = 5u;
+-            break;
+-          }
+-        }
+-      }
+-    }
+-    v_code = ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_width));
+-    v_bits >>= v_width;
+-    v_n_bits -= v_width;
+-    if (v_code < v_clear_code) {
+-      self->private_data.f_output[v_output_wi] = ((uint8_t)(v_code));
+-      v_output_wi = ((v_output_wi + 1u) & 8191u);
+-      if (v_save_code <= 4095u) {
+-        v_lm1_a = (((uint16_t)(self->private_data.f_lm1s[v_prev_code] + 1u)) & 4095u);
+-        self->private_data.f_lm1s[v_save_code] = v_lm1_a;
+-        if ((v_lm1_a % 8u) != 0u) {
+-          self->private_impl.f_prefixes[v_save_code] = self->private_impl.f_prefixes[v_prev_code];
+-          memcpy(self->private_data.f_suffixes[v_save_code],self->private_data.f_suffixes[v_prev_code], sizeof(self->private_data.f_suffixes[v_save_code]));
+-          self->private_data.f_suffixes[v_save_code][(v_lm1_a % 8u)] = ((uint8_t)(v_code));
+-        } else {
+-          self->private_impl.f_prefixes[v_save_code] = ((uint16_t)(v_prev_code));
+-          self->private_data.f_suffixes[v_save_code][0u] = ((uint8_t)(v_code));
+-        }
+-        v_save_code += 1u;
+-        if (v_width < 12u) {
+-          v_width += (1u & (v_save_code >> v_width));
+-        }
+-        v_prev_code = v_code;
+-      }
+-    } else if (v_code <= v_end_code) {
+-      if (v_code == v_end_code) {
+-        self->private_impl.f_read_from_return_value = 0u;
+-        break;
+-      }
+-      v_save_code = v_end_code;
+-      v_prev_code = v_end_code;
+-      v_width = (self->private_impl.f_literal_width + 1u);
+-    } else if (v_code <= v_save_code) {
+-      v_c = v_code;
+-      if (v_code == v_save_code) {
+-        v_c = v_prev_code;
+-      }
+-      v_o = ((v_output_wi + (((uint32_t)(self->private_data.f_lm1s[v_c])) & 4294967288u)) & 8191u);
+-      v_output_wi = ((v_output_wi + 1u + ((uint32_t)(self->private_data.f_lm1s[v_c]))) & 8191u);
+-      v_steps = (((uint32_t)(self->private_data.f_lm1s[v_c])) >> 3u);
+-      while (true) {
+-        memcpy((self->private_data.f_output)+(v_o), (self->private_data.f_suffixes[v_c]), 8u);
+-        if (v_steps <= 0u) {
+-          break;
+-        }
+-        v_steps -= 1u;
+-        v_o = (((uint32_t)(v_o - 8u)) & 8191u);
+-        v_c = ((uint32_t)(self->private_impl.f_prefixes[v_c]));
+-      }
+-      v_first_byte = self->private_data.f_suffixes[v_c][0u];
+-      if (v_code == v_save_code) {
+-        self->private_data.f_output[v_output_wi] = v_first_byte;
+-        v_output_wi = ((v_output_wi + 1u) & 8191u);
++  if (((uint64_t)(a_prev.len)) == 0u) {
++    v_k128 = _mm_set1_epi8((int8_t)(254u));
++    {
++      wuffs_base__slice_u8 i_slice_curr = a_curr;
++      v_curr.ptr = i_slice_curr.ptr;
++      v_curr.len = 4;
++      const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8));
++      while (v_curr.ptr < i_end0_curr) {
++        v_p128 = _mm_avg_epu8(_mm_and_si128(v_a128, v_k128), v_b128);
++        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++        v_x128 = _mm_add_epi8(v_x128, v_p128);
++        v_a128 = v_x128;
++        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
++        v_curr.ptr += 4;
++        v_p128 = _mm_avg_epu8(_mm_and_si128(v_a128, v_k128), v_b128);
++        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++        v_x128 = _mm_add_epi8(v_x128, v_p128);
++        v_a128 = v_x128;
++        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
++        v_curr.ptr += 4;
+       }
+-      if (v_save_code <= 4095u) {
+-        v_lm1_b = (((uint16_t)(self->private_data.f_lm1s[v_prev_code] + 1u)) & 4095u);
+-        self->private_data.f_lm1s[v_save_code] = v_lm1_b;
+-        if ((v_lm1_b % 8u) != 0u) {
+-          self->private_impl.f_prefixes[v_save_code] = self->private_impl.f_prefixes[v_prev_code];
+-          memcpy(self->private_data.f_suffixes[v_save_code],self->private_data.f_suffixes[v_prev_code], sizeof(self->private_data.f_suffixes[v_save_code]));
+-          self->private_data.f_suffixes[v_save_code][(v_lm1_b % 8u)] = v_first_byte;
+-        } else {
+-          self->private_impl.f_prefixes[v_save_code] = ((uint16_t)(v_prev_code));
+-          self->private_data.f_suffixes[v_save_code][0u] = ((uint8_t)(v_first_byte));
+-        }
+-        v_save_code += 1u;
+-        if (v_width < 12u) {
+-          v_width += (1u & (v_save_code >> v_width));
+-        }
+-        v_prev_code = v_code;
++      v_curr.len = 4;
++      const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
++      while (v_curr.ptr < i_end1_curr) {
++        v_p128 = _mm_avg_epu8(_mm_and_si128(v_a128, v_k128), v_b128);
++        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++        v_x128 = _mm_add_epi8(v_x128, v_p128);
++        v_a128 = v_x128;
++        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
++        v_curr.ptr += 4;
+       }
+-    } else {
+-      self->private_impl.f_read_from_return_value = 4u;
+-      break;
+-    }
+-    if (v_output_wi > 4095u) {
+-      self->private_impl.f_read_from_return_value = 1u;
+-      break;
++      v_curr.len = 0;
+     }
+-  }
+-  if (self->private_impl.f_read_from_return_value != 2u) {
+-    while (v_n_bits >= 8u) {
+-      v_n_bits -= 8u;
+-      if (iop_a_src > io1_a_src) {
+-        iop_a_src--;
+-      } else {
+-        self->private_impl.f_read_from_return_value = 5u;
+-        break;
++  } else {
++    v_k128 = _mm_set1_epi8((int8_t)(1u));
++    {
++      wuffs_base__slice_u8 i_slice_curr = a_curr;
++      v_curr.ptr = i_slice_curr.ptr;
++      wuffs_base__slice_u8 i_slice_prev = a_prev;
++      v_prev.ptr = i_slice_prev.ptr;
++      i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
++      v_curr.len = 4;
++      v_prev.len = 4;
++      const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8));
++      while (v_curr.ptr < i_end0_curr) {
++        v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
++        v_p128 = _mm_avg_epu8(v_a128, v_b128);
++        v_p128 = _mm_sub_epi8(v_p128, _mm_and_si128(v_k128, _mm_xor_si128(v_a128, v_b128)));
++        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++        v_x128 = _mm_add_epi8(v_x128, v_p128);
++        v_a128 = v_x128;
++        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
++        v_curr.ptr += 4;
++        v_prev.ptr += 4;
++        v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
++        v_p128 = _mm_avg_epu8(v_a128, v_b128);
++        v_p128 = _mm_sub_epi8(v_p128, _mm_and_si128(v_k128, _mm_xor_si128(v_a128, v_b128)));
++        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++        v_x128 = _mm_add_epi8(v_x128, v_p128);
++        v_a128 = v_x128;
++        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
++        v_curr.ptr += 4;
++        v_prev.ptr += 4;
++      }
++      v_curr.len = 4;
++      v_prev.len = 4;
++      const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
++      while (v_curr.ptr < i_end1_curr) {
++        v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
++        v_p128 = _mm_avg_epu8(v_a128, v_b128);
++        v_p128 = _mm_sub_epi8(v_p128, _mm_and_si128(v_k128, _mm_xor_si128(v_a128, v_b128)));
++        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++        v_x128 = _mm_add_epi8(v_x128, v_p128);
++        v_a128 = v_x128;
++        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
++        v_curr.ptr += 4;
++        v_prev.ptr += 4;
+       }
++      v_curr.len = 0;
++      v_prev.len = 0;
+     }
+   }
+-  self->private_impl.f_save_code = v_save_code;
+-  self->private_impl.f_prev_code = v_prev_code;
+-  self->private_impl.f_width = v_width;
+-  self->private_impl.f_bits = v_bits;
+-  self->private_impl.f_n_bits = v_n_bits;
+-  self->private_impl.f_output_wi = v_output_wi;
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
+-
+   return wuffs_base__make_empty_struct();
+ }
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
+ 
+-// -------- func lzw.decoder.write_to
++// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
++// -------- func png.decoder.filter_4_distance_3_x86_sse42
+ 
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_lzw__decoder__write_to(
+-    wuffs_lzw__decoder* self,
+-    wuffs_base__io_buffer* a_dst) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  wuffs_base__slice_u8 v_s = {0};
+-  uint64_t v_n = 0;
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_4_distance_3_x86_sse42(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev) {
++  wuffs_base__slice_u8 v_curr = {0};
++  wuffs_base__slice_u8 v_prev = {0};
++  __m128i v_x128 = {0};
++  __m128i v_a128 = {0};
++  __m128i v_b128 = {0};
++  __m128i v_c128 = {0};
++  __m128i v_p128 = {0};
++  __m128i v_pa128 = {0};
++  __m128i v_pb128 = {0};
++  __m128i v_pc128 = {0};
++  __m128i v_smallest128 = {0};
++  __m128i v_z128 = {0};
+ 
+-  uint8_t* iop_a_dst = NULL;
+-  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_dst && a_dst->data.ptr) {
+-    io0_a_dst = a_dst->data.ptr;
+-    io1_a_dst = io0_a_dst + a_dst->meta.wi;
+-    iop_a_dst = io1_a_dst;
+-    io2_a_dst = io0_a_dst + a_dst->data.len;
+-    if (a_dst->meta.closed) {
+-      io2_a_dst = iop_a_dst;
++  {
++    wuffs_base__slice_u8 i_slice_curr = a_curr;
++    v_curr.ptr = i_slice_curr.ptr;
++    wuffs_base__slice_u8 i_slice_prev = a_prev;
++    v_prev.ptr = i_slice_prev.ptr;
++    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
++    v_curr.len = 4;
++    v_prev.len = 4;
++    const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, wuffs_private_impl__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 7, 6));
++    while (v_curr.ptr < i_end0_curr) {
++      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
++      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
++      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
++      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
++      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
++      v_pa128 = _mm_abs_epi16(v_pa128);
++      v_pb128 = _mm_abs_epi16(v_pb128);
++      v_pc128 = _mm_abs_epi16(v_pc128);
++      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
++      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
++      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
++      v_x128 = _mm_add_epi8(v_x128, v_p128);
++      v_a128 = v_x128;
++      v_c128 = v_b128;
++      v_x128 = _mm_packus_epi16(v_x128, v_x128);
++      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
++      v_curr.ptr += 3;
++      v_prev.ptr += 3;
++      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
++      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
++      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
++      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
++      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
++      v_pa128 = _mm_abs_epi16(v_pa128);
++      v_pb128 = _mm_abs_epi16(v_pb128);
++      v_pc128 = _mm_abs_epi16(v_pc128);
++      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
++      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
++      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
++      v_x128 = _mm_add_epi8(v_x128, v_p128);
++      v_a128 = v_x128;
++      v_c128 = v_b128;
++      v_x128 = _mm_packus_epi16(v_x128, v_x128);
++      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
++      v_curr.ptr += 3;
++      v_prev.ptr += 3;
+     }
+-  }
+-
+-  uint32_t coro_susp_point = self->private_impl.p_write_to[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    while (self->private_impl.f_output_wi > 0u) {
+-      if (self->private_impl.f_output_ri > self->private_impl.f_output_wi) {
+-        status = wuffs_base__make_status(wuffs_lzw__error__internal_error_inconsistent_i_o);
+-        goto exit;
+-      }
+-      v_s = wuffs_base__make_slice_u8_ij(self->private_data.f_output,
+-          self->private_impl.f_output_ri,
+-          self->private_impl.f_output_wi);
+-      v_n = wuffs_base__io_writer__copy_from_slice(&iop_a_dst, io2_a_dst,v_s);
+-      if (v_n == ((uint64_t)(v_s.len))) {
+-        self->private_impl.f_output_ri = 0u;
+-        self->private_impl.f_output_wi = 0u;
+-        status = wuffs_base__make_status(NULL);
+-        goto ok;
+-      }
+-      self->private_impl.f_output_ri = (((uint32_t)(self->private_impl.f_output_ri + ((uint32_t)(v_n)))) & 8191u);
+-      status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    v_curr.len = 4;
++    v_prev.len = 4;
++    const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, wuffs_private_impl__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 4, 3));
++    while (v_curr.ptr < i_end1_curr) {
++      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
++      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
++      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
++      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
++      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
++      v_pa128 = _mm_abs_epi16(v_pa128);
++      v_pb128 = _mm_abs_epi16(v_pb128);
++      v_pc128 = _mm_abs_epi16(v_pc128);
++      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
++      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
++      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
++      v_x128 = _mm_add_epi8(v_x128, v_p128);
++      v_a128 = v_x128;
++      v_c128 = v_b128;
++      v_x128 = _mm_packus_epi16(v_x128, v_x128);
++      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
++      v_curr.ptr += 3;
++      v_prev.ptr += 3;
+     }
+-
+-    ok:
+-    self->private_impl.p_write_to[0] = 0;
+-    goto exit;
+-  }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_write_to[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-
+-  goto exit;
+-  exit:
+-  if (a_dst && a_dst->data.ptr) {
+-    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-  }
+-
+-  return status;
+-}
+-
+-// -------- func lzw.decoder.flush
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__slice_u8
+-wuffs_lzw__decoder__flush(
+-    wuffs_lzw__decoder* self) {
+-  if (!self) {
+-    return wuffs_base__make_slice_u8(NULL, 0);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_slice_u8(NULL, 0);
+-  }
+-
+-  uint32_t v_ri = 0;
+-  uint32_t v_wi = 0;
+-
+-  v_ri = self->private_impl.f_output_ri;
+-  v_wi = self->private_impl.f_output_wi;
+-  self->private_impl.f_output_ri = 0u;
+-  self->private_impl.f_output_wi = 0u;
+-  if (v_ri <= v_wi) {
+-    return wuffs_base__make_slice_u8_ij(self->private_data.f_output, v_ri, v_wi);
++    v_curr.len = 3;
++    v_prev.len = 3;
++    const uint8_t* i_end2_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3));
++    while (v_curr.ptr < i_end2_curr) {
++      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u24le__no_bounds_check(v_prev.ptr)));
++      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
++      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
++      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
++      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
++      v_pa128 = _mm_abs_epi16(v_pa128);
++      v_pb128 = _mm_abs_epi16(v_pb128);
++      v_pc128 = _mm_abs_epi16(v_pc128);
++      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
++      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
++      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u24le__no_bounds_check(v_curr.ptr)));
++      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
++      v_x128 = _mm_add_epi8(v_x128, v_p128);
++      v_x128 = _mm_packus_epi16(v_x128, v_x128);
++      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
++      v_curr.ptr += 3;
++      v_prev.ptr += 3;
++    }
++    v_curr.len = 0;
++    v_prev.len = 0;
+   }
+-  return wuffs_base__make_slice_u8(self->private_data.f_output, 0);
++  return wuffs_base__make_empty_struct();
+ }
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW)
+-
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM)
+-
+-// ---------------- Status Codes Implementations
+-
+-const char wuffs_netpbm__error__bad_header[] = "#netpbm: bad header";
+-const char wuffs_netpbm__error__truncated_input[] = "#netpbm: truncated input";
+-const char wuffs_netpbm__error__unsupported_netpbm_file[] = "#netpbm: unsupported Netpbm file";
+-const char wuffs_netpbm__note__internal_note_short_read[] = "@netpbm: internal note: short read";
+-
+-// ---------------- Private Consts
+-
+-// ---------------- Private Initializer Prototypes
+-
+-// ---------------- Private Function Prototypes
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_netpbm__decoder__do_decode_image_config(
+-    wuffs_netpbm__decoder* self,
+-    wuffs_base__image_config* a_dst,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_netpbm__decoder__do_decode_frame_config(
+-    wuffs_netpbm__decoder* self,
+-    wuffs_base__frame_config* a_dst,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_netpbm__decoder__do_decode_frame(
+-    wuffs_netpbm__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts);
++// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
++// -------- func png.decoder.filter_4_distance_4_x86_sse42
+ 
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_netpbm__decoder__swizzle(
+-    wuffs_netpbm__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src);
+-
+-// ---------------- VTables
+-
+-const wuffs_base__image_decoder__func_ptrs
+-wuffs_netpbm__decoder__func_ptrs_for__wuffs_base__image_decoder = {
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__pixel_buffer*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__pixel_blend,
+-      wuffs_base__slice_u8,
+-      wuffs_base__decode_frame_options*))(&wuffs_netpbm__decoder__decode_frame),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__frame_config*,
+-      wuffs_base__io_buffer*))(&wuffs_netpbm__decoder__decode_frame_config),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__image_config*,
+-      wuffs_base__io_buffer*))(&wuffs_netpbm__decoder__decode_image_config),
+-  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_netpbm__decoder__frame_dirty_rect),
+-  (uint64_t(*)(const void*,
+-      uint32_t))(&wuffs_netpbm__decoder__get_quirk),
+-  (uint64_t(*)(const void*))(&wuffs_netpbm__decoder__history_retain_length),
+-  (uint32_t(*)(const void*))(&wuffs_netpbm__decoder__num_animation_loops),
+-  (uint64_t(*)(const void*))(&wuffs_netpbm__decoder__num_decoded_frame_configs),
+-  (uint64_t(*)(const void*))(&wuffs_netpbm__decoder__num_decoded_frames),
+-  (wuffs_base__status(*)(void*,
+-      uint64_t,
+-      uint64_t))(&wuffs_netpbm__decoder__restart_frame),
+-  (wuffs_base__status(*)(void*,
+-      uint32_t,
+-      uint64_t))(&wuffs_netpbm__decoder__set_quirk),
+-  (wuffs_base__empty_struct(*)(void*,
+-      uint32_t,
+-      bool))(&wuffs_netpbm__decoder__set_report_metadata),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__more_information*,
+-      wuffs_base__io_buffer*))(&wuffs_netpbm__decoder__tell_me_more),
+-  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_netpbm__decoder__workbuf_len),
+-};
+-
+-// ---------------- Initializer Implementations
+-
+-wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_netpbm__decoder__initialize(
+-    wuffs_netpbm__decoder* self,
+-    size_t sizeof_star_self,
+-    uint64_t wuffs_version,
+-    uint32_t options){
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (sizeof(*self) != sizeof_star_self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
+-  }
+-  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
+-      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
+-  }
++static wuffs_base__empty_struct
++wuffs_png__decoder__filter_4_distance_4_x86_sse42(
++    wuffs_png__decoder* self,
++    wuffs_base__slice_u8 a_curr,
++    wuffs_base__slice_u8 a_prev) {
++  wuffs_base__slice_u8 v_curr = {0};
++  wuffs_base__slice_u8 v_prev = {0};
++  __m128i v_x128 = {0};
++  __m128i v_a128 = {0};
++  __m128i v_b128 = {0};
++  __m128i v_c128 = {0};
++  __m128i v_p128 = {0};
++  __m128i v_pa128 = {0};
++  __m128i v_pb128 = {0};
++  __m128i v_pc128 = {0};
++  __m128i v_smallest128 = {0};
++  __m128i v_z128 = {0};
+ 
+-  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
+-    // The whole point of this if-check is to detect an uninitialized *self.
+-    // We disable the warning on GCC. Clang-5.0 does not have this warning.
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+-#endif
+-    if (self->private_impl.magic != 0) {
+-      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++  {
++    wuffs_base__slice_u8 i_slice_curr = a_curr;
++    v_curr.ptr = i_slice_curr.ptr;
++    wuffs_base__slice_u8 i_slice_prev = a_prev;
++    v_prev.ptr = i_slice_prev.ptr;
++    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
++    v_curr.len = 4;
++    v_prev.len = 4;
++    const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8));
++    while (v_curr.ptr < i_end0_curr) {
++      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
++      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
++      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
++      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
++      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
++      v_pa128 = _mm_abs_epi16(v_pa128);
++      v_pb128 = _mm_abs_epi16(v_pb128);
++      v_pc128 = _mm_abs_epi16(v_pc128);
++      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
++      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
++      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
++      v_x128 = _mm_add_epi8(v_x128, v_p128);
++      v_a128 = v_x128;
++      v_c128 = v_b128;
++      v_x128 = _mm_packus_epi16(v_x128, v_x128);
++      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
++      v_curr.ptr += 4;
++      v_prev.ptr += 4;
++      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
++      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
++      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
++      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
++      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
++      v_pa128 = _mm_abs_epi16(v_pa128);
++      v_pb128 = _mm_abs_epi16(v_pb128);
++      v_pc128 = _mm_abs_epi16(v_pc128);
++      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
++      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
++      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
++      v_x128 = _mm_add_epi8(v_x128, v_p128);
++      v_a128 = v_x128;
++      v_c128 = v_b128;
++      v_x128 = _mm_packus_epi16(v_x128, v_x128);
++      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
++      v_curr.ptr += 4;
++      v_prev.ptr += 4;
+     }
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-  } else {
+-    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
+-      memset(self, 0, sizeof(*self));
+-      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
+-    } else {
+-      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++    v_curr.len = 4;
++    v_prev.len = 4;
++    const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
++    while (v_curr.ptr < i_end1_curr) {
++      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
++      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
++      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
++      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
++      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
++      v_pa128 = _mm_abs_epi16(v_pa128);
++      v_pb128 = _mm_abs_epi16(v_pb128);
++      v_pc128 = _mm_abs_epi16(v_pc128);
++      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
++      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
++      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
++      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
++      v_x128 = _mm_add_epi8(v_x128, v_p128);
++      v_a128 = v_x128;
++      v_c128 = v_b128;
++      v_x128 = _mm_packus_epi16(v_x128, v_x128);
++      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
++      v_curr.ptr += 4;
++      v_prev.ptr += 4;
+     }
++    v_curr.len = 0;
++    v_prev.len = 0;
+   }
+-
+-  self->private_impl.magic = WUFFS_BASE__MAGIC;
+-  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
+-      wuffs_base__image_decoder__vtable_name;
+-  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
+-      (const void*)(&wuffs_netpbm__decoder__func_ptrs_for__wuffs_base__image_decoder);
+-  return wuffs_base__make_status(NULL);
+-}
+-
+-wuffs_netpbm__decoder*
+-wuffs_netpbm__decoder__alloc(void) {
+-  wuffs_netpbm__decoder* x =
+-      (wuffs_netpbm__decoder*)(calloc(sizeof(wuffs_netpbm__decoder), 1));
+-  if (!x) {
+-    return NULL;
+-  }
+-  if (wuffs_netpbm__decoder__initialize(
+-      x, sizeof(wuffs_netpbm__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
+-    free(x);
+-    return NULL;
+-  }
+-  return x;
+-}
+-
+-size_t
+-sizeof__wuffs_netpbm__decoder(void) {
+-  return sizeof(wuffs_netpbm__decoder);
++  return wuffs_base__make_empty_struct();
+ }
++#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
+ 
+-// ---------------- Function Implementations
+-
+-// -------- func netpbm.decoder.get_quirk
++// -------- func png.decoder.get_quirk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_netpbm__decoder__get_quirk(
+-    const wuffs_netpbm__decoder* self,
++wuffs_png__decoder__get_quirk(
++    const wuffs_png__decoder* self,
+     uint32_t a_key) {
+   if (!self) {
+     return 0;
+@@ -49804,15 +62628,18 @@ wuffs_netpbm__decoder__get_quirk(
+     return 0;
+   }
+ 
++  if ((a_key == 1u) && self->private_impl.f_ignore_checksum) {
++    return 1u;
++  }
+   return 0u;
+ }
+ 
+-// -------- func netpbm.decoder.set_quirk
++// -------- func png.decoder.set_quirk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_netpbm__decoder__set_quirk(
+-    wuffs_netpbm__decoder* self,
++wuffs_png__decoder__set_quirk(
++    wuffs_png__decoder* self,
+     uint32_t a_key,
+     uint64_t a_value) {
+   if (!self) {
+@@ -49825,15 +62652,20 @@ wuffs_netpbm__decoder__set_quirk(
+         : wuffs_base__error__initialize_not_called);
+   }
+ 
++  if (a_key == 1u) {
++    self->private_impl.f_ignore_checksum = (a_value > 0u);
++    wuffs_zlib__decoder__set_quirk(&self->private_data.f_zlib, a_key, a_value);
++    return wuffs_base__make_status(NULL);
++  }
+   return wuffs_base__make_status(wuffs_base__error__unsupported_option);
+ }
+ 
+-// -------- func netpbm.decoder.decode_image_config
++// -------- func png.decoder.decode_image_config
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_netpbm__decoder__decode_image_config(
+-    wuffs_netpbm__decoder* self,
++wuffs_png__decoder__decode_image_config(
++    wuffs_png__decoder* self,
+     wuffs_base__image_config* a_dst,
+     wuffs_base__io_buffer* a_src) {
+   if (!self) {
+@@ -49859,53 +62691,364 @@ wuffs_netpbm__decoder__decode_image_config(
+ 
+   wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_image_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_png__decoder__do_decode_image_config(self, a_dst, a_src);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_png__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++
++    ok:
++    self->private_impl.p_decode_image_config = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func png.decoder.do_decode_image_config
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_png__decoder__do_decode_image_config(
++    wuffs_png__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint64_t v_magic = 0;
++  uint64_t v_mark = 0;
++  uint32_t v_checksum_have = 0;
++  uint32_t v_checksum_want = 0;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config;
++  if (coro_susp_point) {
++    v_checksum_have = self->private_data.s_do_decode_image_config.v_checksum_have;
++  }
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
++    if (self->private_impl.f_call_sequence != 0u) {
++      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++      goto exit;
++    } else if ( ! self->private_impl.f_seen_ihdr) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        uint64_t t_0;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
++          t_0 = wuffs_base__peek_u64le__no_bounds_check(iop_a_src);
++          iop_a_src += 8;
++        } else {
++          self->private_data.s_do_decode_image_config.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++            uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
++            if (num_bits_0 == 56) {
++              t_0 = ((uint64_t)(*scratch));
++              break;
++            }
++            num_bits_0 += 8u;
++            *scratch |= ((uint64_t)(num_bits_0)) << 56;
++          }
++        }
++        v_magic = t_0;
++      }
++      if (v_magic != 727905341920923785u) {
++        status = wuffs_base__make_status(wuffs_png__error__bad_header);
++        goto exit;
++      }
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++        uint64_t t_1;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
++          t_1 = wuffs_base__peek_u64le__no_bounds_check(iop_a_src);
++          iop_a_src += 8;
++        } else {
++          self->private_data.s_do_decode_image_config.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++            uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
++            if (num_bits_1 == 56) {
++              t_1 = ((uint64_t)(*scratch));
++              break;
++            }
++            num_bits_1 += 8u;
++            *scratch |= ((uint64_t)(num_bits_1)) << 56;
++          }
++        }
++        v_magic = t_1;
++      }
++      if (v_magic != 5927942488114331648u) {
++        if (v_magic == 5278895250759221248u) {
++          status = wuffs_base__make_status(wuffs_png__error__unsupported_cgbi_extension);
++          goto exit;
++        }
++        status = wuffs_base__make_status(wuffs_png__error__bad_header);
++        goto exit;
++      }
++      self->private_impl.f_chunk_type_array[0u] = 73u;
++      self->private_impl.f_chunk_type_array[1u] = 72u;
++      self->private_impl.f_chunk_type_array[2u] = 68u;
++      self->private_impl.f_chunk_type_array[3u] = 82u;
++      wuffs_private_impl__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
++          sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
++      wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4));
++      while (true) {
++        v_mark = ((uint64_t)(iop_a_src - io0_a_src));
++        {
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          wuffs_base__status t_2 = wuffs_png__decoder__decode_ihdr(self, a_src);
++          v_status = t_2;
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++        }
++        if ( ! self->private_impl.f_ignore_checksum) {
++          v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_private_impl__io__since(v_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
++        }
++        if (wuffs_base__status__is_ok(&v_status)) {
++          break;
++        }
++        status = v_status;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
++      }
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++        uint32_t t_3;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++          t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++          iop_a_src += 4;
++        } else {
++          self->private_data.s_do_decode_image_config.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++            uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu));
++            *scratch >>= 8;
++            *scratch <<= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
++            if (num_bits_3 == 24) {
++              t_3 = ((uint32_t)(*scratch >> 32));
++              break;
++            }
++            num_bits_3 += 8u;
++            *scratch |= ((uint64_t)(num_bits_3));
++          }
++        }
++        v_checksum_want = t_3;
++      }
++      if ( ! self->private_impl.f_ignore_checksum && (v_checksum_have != v_checksum_want)) {
++        status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
++        goto exit;
++      }
++      self->private_impl.f_seen_ihdr = true;
++    } else if (self->private_impl.f_metadata_fourcc != 0u) {
++      self->private_impl.f_call_sequence = 16u;
++      status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
++      goto ok;
++    }
+     while (true) {
++      if (((uint64_t)(io2_a_src - iop_a_src)) < 8u) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
++        continue;
++      }
++      self->private_impl.f_chunk_length = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++      self->private_impl.f_chunk_type = ((uint32_t)((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) >> 32u)));
++      if (self->private_impl.f_chunk_type == 1413563465u) {
++        if ( ! self->private_impl.f_seen_actl || self->private_impl.f_seen_fctl) {
++          break;
++        }
++        self->private_impl.f_seen_idat = true;
++      } else if (self->private_impl.f_chunk_type == 1413571686u) {
++        if (self->private_impl.f_seen_idat && self->private_impl.f_seen_fctl) {
++          break;
++        }
++        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++        goto exit;
++      }
++      iop_a_src += 8u;
++      if ( ! self->private_impl.f_ignore_checksum && ((self->private_impl.f_chunk_type & 32u) == 0u)) {
++        self->private_impl.f_chunk_type_array[0u] = ((uint8_t)((self->private_impl.f_chunk_type >> 0u)));
++        self->private_impl.f_chunk_type_array[1u] = ((uint8_t)((self->private_impl.f_chunk_type >> 8u)));
++        self->private_impl.f_chunk_type_array[2u] = ((uint8_t)((self->private_impl.f_chunk_type >> 16u)));
++        self->private_impl.f_chunk_type_array[3u] = ((uint8_t)((self->private_impl.f_chunk_type >> 24u)));
++        wuffs_private_impl__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
++            sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
++        wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4));
++      }
++      while (true) {
++        v_mark = ((uint64_t)(iop_a_src - io0_a_src));
++        {
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          wuffs_base__status t_4 = wuffs_png__decoder__decode_other_chunk(self, a_src, false);
++          v_status = t_4;
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++        }
++        if ( ! self->private_impl.f_ignore_checksum && ((self->private_impl.f_chunk_type & 32u) == 0u)) {
++          v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_private_impl__io__since(v_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
++        }
++        if (wuffs_base__status__is_ok(&v_status)) {
++          break;
++        }
++        status = v_status;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
++      }
++      if (self->private_impl.f_metadata_fourcc != 0u) {
++        self->private_impl.f_call_sequence = 16u;
++        status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
++        goto ok;
++      }
+       {
+-        wuffs_base__status t_0 = wuffs_netpbm__decoder__do_decode_image_config(self, a_dst, a_src);
+-        v_status = t_0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
++        uint32_t t_5;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++          t_5 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++          iop_a_src += 4;
++        } else {
++          self->private_data.s_do_decode_image_config.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++            uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFFu));
++            *scratch >>= 8;
++            *scratch <<= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5);
++            if (num_bits_5 == 24) {
++              t_5 = ((uint32_t)(*scratch >> 32));
++              break;
++            }
++            num_bits_5 += 8u;
++            *scratch |= ((uint64_t)(num_bits_5));
++          }
++        }
++        v_checksum_want = t_5;
+       }
+-      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_netpbm__error__truncated_input);
++      if ( ! self->private_impl.f_ignore_checksum && ((self->private_impl.f_chunk_type & 32u) == 0u) && (v_checksum_have != v_checksum_want)) {
++        status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
+         goto exit;
+       }
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+     }
++    if ((self->private_impl.f_color_type == 3u) &&  ! self->private_impl.f_seen_plte) {
++      status = wuffs_base__make_status(wuffs_png__error__missing_palette);
++      goto exit;
++    }
++    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
++    self->private_impl.f_first_config_io_position = self->private_impl.f_frame_config_io_position;
++    if (a_dst != NULL) {
++      wuffs_base__image_config__set(
++          a_dst,
++          self->private_impl.f_dst_pixfmt,
++          0u,
++          self->private_impl.f_width,
++          self->private_impl.f_height,
++          self->private_impl.f_first_config_io_position,
++          ((self->private_impl.f_color_type <= 3u) &&  ! self->private_impl.f_seen_trns));
++    }
++    if ( ! self->private_impl.f_seen_actl) {
++      self->private_impl.f_num_animation_frames_value = 1u;
++      self->private_impl.f_first_rect_x0 = 0u;
++      self->private_impl.f_first_rect_y0 = 0u;
++      self->private_impl.f_first_rect_x1 = self->private_impl.f_width;
++      self->private_impl.f_first_rect_y1 = self->private_impl.f_height;
++      self->private_impl.f_first_duration = 0u;
++      self->private_impl.f_first_disposal = 0u;
++      self->private_impl.f_first_overwrite_instead_of_blend = false;
++    }
++    self->private_impl.f_call_sequence = 32u;
+ 
+     ok:
+-    self->private_impl.p_decode_image_config[0] = 0;
++    self->private_impl.p_do_decode_image_config = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
++  self->private_impl.p_do_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_do_decode_image_config.v_checksum_have = v_checksum_have;
+ 
+   goto exit;
+   exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
++
+   return status;
+ }
+ 
+-// -------- func netpbm.decoder.do_decode_image_config
++// -------- func png.decoder.decode_ihdr
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_netpbm__decoder__do_decode_image_config(
+-    wuffs_netpbm__decoder* self,
+-    wuffs_base__image_config* a_dst,
++wuffs_png__decoder__decode_ihdr(
++    wuffs_png__decoder* self,
+     wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint8_t v_c = 0;
+-  uint32_t v_n = 0;
++  uint32_t v_a32 = 0;
++  uint8_t v_a8 = 0;
+ 
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -49918,348 +63061,343 @@ wuffs_netpbm__decoder__do_decode_image_config(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_ihdr;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if (self->private_impl.f_call_sequence != 0u) {
+-      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      uint32_t t_0;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_decode_ihdr.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_ihdr.scratch;
++          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
++          *scratch >>= 8;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
++          if (num_bits_0 == 24) {
++            t_0 = ((uint32_t)(*scratch >> 32));
++            break;
++          }
++          num_bits_0 += 8u;
++          *scratch |= ((uint64_t)(num_bits_0));
++        }
++      }
++      v_a32 = t_0;
++    }
++    if ((v_a32 == 0u) || (v_a32 > 2147483647u)) {
++      status = wuffs_base__make_status(wuffs_png__error__bad_header);
++      goto exit;
++    } else if (v_a32 > 16777215u) {
++      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
+       goto exit;
+     }
++    self->private_impl.f_width = v_a32;
+     {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++      uint32_t t_1;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_decode_ihdr.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_ihdr.scratch;
++          uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
++          *scratch >>= 8;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
++          if (num_bits_1 == 24) {
++            t_1 = ((uint32_t)(*scratch >> 32));
++            break;
++          }
++          num_bits_1 += 8u;
++          *scratch |= ((uint64_t)(num_bits_1));
++        }
++      }
++      v_a32 = t_1;
++    }
++    if ((v_a32 == 0u) || (v_a32 > 2147483647u)) {
++      status = wuffs_base__make_status(wuffs_png__error__bad_header);
++      goto exit;
++    } else if (v_a32 > 16777215u) {
++      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
++      goto exit;
++    }
++    self->private_impl.f_height = v_a32;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+       if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+         status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+         goto suspend;
+       }
+-      uint8_t t_0 = *iop_a_src++;
+-      v_c = t_0;
++      uint8_t t_2 = *iop_a_src++;
++      v_a8 = t_2;
+     }
+-    if (v_c != 80u) {
+-      status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
++    if (v_a8 > 16u) {
++      status = wuffs_base__make_status(wuffs_png__error__bad_header);
+       goto exit;
+     }
++    self->private_impl.f_depth = v_a8;
+     {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+       if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+         status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+         goto suspend;
+       }
+-      uint8_t t_1 = *iop_a_src++;
+-      v_c = t_1;
++      uint8_t t_3 = *iop_a_src++;
++      v_a8 = t_3;
+     }
+-    if ((v_c < 49u) || (55u < v_c)) {
+-      status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
+-      goto exit;
+-    } else if (v_c == 53u) {
+-      self->private_impl.f_pixfmt = 536870920u;
+-    } else if (v_c == 54u) {
+-      self->private_impl.f_pixfmt = 2684356744u;
+-    } else {
+-      status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file);
++    if ((v_a8 == 1u) || (v_a8 == 5u) || (v_a8 > 6u)) {
++      status = wuffs_base__make_status(wuffs_png__error__bad_header);
+       goto exit;
+     }
++    self->private_impl.f_color_type = v_a8;
+     {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+       if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+         status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+         goto suspend;
+       }
+-      uint8_t t_2 = *iop_a_src++;
+-      v_c = t_2;
++      uint8_t t_4 = *iop_a_src++;
++      v_a8 = t_4;
+     }
+-    if (v_c != 10u) {
+-      status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
++    if (v_a8 != 0u) {
++      status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method);
+       goto exit;
+     }
+-    while (true) {
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
+-        }
+-        uint8_t t_3 = *iop_a_src++;
+-        v_c = t_3;
+-      }
+-      if ((v_c == 32u) || (v_c == 9u)) {
+-        continue;
+-      } else if (v_c == 35u) {
+-        while (true) {
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint8_t t_4 = *iop_a_src++;
+-            v_c = t_4;
+-          }
+-          if (v_c == 10u) {
+-            break;
+-          }
+-        }
+-        continue;
+-      } else if ((v_c < 48u) || (57u < v_c)) {
+-        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
+-        goto exit;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
+       }
+-      self->private_impl.f_width = ((uint32_t)((v_c - 48u)));
+-      break;
++      uint8_t t_5 = *iop_a_src++;
++      v_a8 = t_5;
+     }
+-    while (true) {
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
+-        }
+-        uint8_t t_5 = *iop_a_src++;
+-        v_c = t_5;
+-      }
+-      if ((v_c == 32u) || (v_c == 9u)) {
+-        break;
+-      } else if ((v_c < 48u) || (57u < v_c)) {
+-        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
+-        goto exit;
+-      }
+-      v_n = ((10u * self->private_impl.f_width) + ((uint32_t)((v_c - 48u))));
+-      if (v_n > 16777215u) {
+-        status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file);
+-        goto exit;
+-      }
+-      self->private_impl.f_width = v_n;
++    if (v_a8 != 0u) {
++      status = wuffs_base__make_status(wuffs_png__error__bad_header);
++      goto exit;
+     }
+-    while (true) {
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
+-        }
+-        uint8_t t_6 = *iop_a_src++;
+-        v_c = t_6;
+-      }
+-      if ((v_c == 32u) || (v_c == 9u)) {
+-        continue;
+-      } else if (v_c == 35u) {
+-        while (true) {
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint8_t t_7 = *iop_a_src++;
+-            v_c = t_7;
+-          }
+-          if (v_c == 10u) {
+-            break;
+-          }
+-        }
+-        continue;
+-      } else if ((v_c < 48u) || (57u < v_c)) {
+-        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
+-        goto exit;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
+       }
+-      self->private_impl.f_height = ((uint32_t)((v_c - 48u)));
+-      break;
++      uint8_t t_6 = *iop_a_src++;
++      v_a8 = t_6;
+     }
+-    while (true) {
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
+-        }
+-        uint8_t t_8 = *iop_a_src++;
+-        v_c = t_8;
+-      }
+-      if ((v_c == 32u) || (v_c == 9u) || (v_c == 13u)) {
+-        continue;
+-      } else if (v_c == 10u) {
+-        break;
+-      } else if ((v_c < 48u) || (57u < v_c)) {
+-        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
+-        goto exit;
+-      }
+-      v_n = ((10u * self->private_impl.f_height) + ((uint32_t)((v_c - 48u))));
+-      if (v_n > 16777215u) {
+-        status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file);
+-        goto exit;
+-      }
+-      self->private_impl.f_height = v_n;
++    if (v_a8 == 0u) {
++      self->private_impl.f_interlace_pass = 0u;
++    } else if (v_a8 == 1u) {
++      self->private_impl.f_interlace_pass = 1u;
++      self->private_impl.choosy_filter_and_swizzle = (
++          &wuffs_png__decoder__filter_and_swizzle_tricky);
++    } else {
++      status = wuffs_base__make_status(wuffs_png__error__bad_header);
++      goto exit;
+     }
+-    while (true) {
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
+-        }
+-        uint8_t t_9 = *iop_a_src++;
+-        v_c = t_9;
+-      }
+-      if ((v_c == 32u) || (v_c == 9u)) {
+-        continue;
+-      } else if (v_c == 35u) {
+-        while (true) {
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint8_t t_10 = *iop_a_src++;
+-            v_c = t_10;
+-          }
+-          if (v_c == 10u) {
+-            break;
+-          }
+-        }
+-        continue;
+-      } else if ((v_c < 48u) || (57u < v_c)) {
+-        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
+-        goto exit;
+-      }
+-      self->private_impl.f_max_value = ((uint32_t)((v_c - 48u)));
+-      break;
++    self->private_impl.f_filter_distance = 0u;
++    wuffs_png__decoder__assign_filter_distance(self);
++    if (self->private_impl.f_filter_distance == 0u) {
++      status = wuffs_base__make_status(wuffs_png__error__bad_header);
++      goto exit;
+     }
+-    while (true) {
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
+-        }
+-        uint8_t t_11 = *iop_a_src++;
+-        v_c = t_11;
+-      }
+-      if ((v_c == 32u) || (v_c == 9u) || (v_c == 13u)) {
+-        continue;
+-      } else if (v_c == 10u) {
+-        break;
+-      } else if ((v_c < 48u) || (57u < v_c)) {
+-        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
+-        goto exit;
+-      }
+-      v_n = ((10u * self->private_impl.f_max_value) + ((uint32_t)((v_c - 48u))));
+-      if (v_n > 16777215u) {
+-        status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file);
+-        goto exit;
++    self->private_impl.f_overall_workbuf_length = (((uint64_t)(self->private_impl.f_height)) * (1u + wuffs_png__decoder__calculate_bytes_per_row(self, self->private_impl.f_width)));
++    wuffs_png__decoder__choose_filter_implementations(self);
++
++    goto ok;
++    ok:
++    self->private_impl.p_decode_ihdr = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_ihdr = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func png.decoder.assign_filter_distance
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__assign_filter_distance(
++    wuffs_png__decoder* self) {
++  if (self->private_impl.f_depth < 8u) {
++    if ((self->private_impl.f_depth != 1u) && (self->private_impl.f_depth != 2u) && (self->private_impl.f_depth != 4u)) {
++      return wuffs_base__make_empty_struct();
++    } else if (self->private_impl.f_color_type == 0u) {
++      self->private_impl.f_dst_pixfmt = 536870920u;
++      self->private_impl.f_src_pixfmt = 536870920u;
++    } else if (self->private_impl.f_color_type == 3u) {
++      self->private_impl.f_dst_pixfmt = 2198077448u;
++      self->private_impl.f_src_pixfmt = 2198077448u;
++    } else {
++      return wuffs_base__make_empty_struct();
++    }
++    self->private_impl.f_filter_distance = 1u;
++    self->private_impl.choosy_filter_and_swizzle = (
++        &wuffs_png__decoder__filter_and_swizzle_tricky);
++  } else if (self->private_impl.f_color_type == 0u) {
++    if (self->private_impl.f_depth == 8u) {
++      self->private_impl.f_dst_pixfmt = 536870920u;
++      self->private_impl.f_src_pixfmt = 536870920u;
++      self->private_impl.f_filter_distance = 1u;
++    } else if (self->private_impl.f_depth == 16u) {
++      if (self->private_impl.f_interlace_pass == 0u) {
++        self->private_impl.f_dst_pixfmt = 536870923u;
++        self->private_impl.f_src_pixfmt = 537919499u;
++      } else {
++        self->private_impl.f_dst_pixfmt = 2164308923u;
++        self->private_impl.f_src_pixfmt = 2164308923u;
+       }
+-      self->private_impl.f_max_value = v_n;
++      self->private_impl.f_filter_distance = 2u;
+     }
+-    if (self->private_impl.f_max_value != 255u) {
+-      status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file);
+-      goto exit;
++  } else if (self->private_impl.f_color_type == 2u) {
++    if (self->private_impl.f_depth == 8u) {
++      self->private_impl.f_dst_pixfmt = 2147485832u;
++      self->private_impl.f_src_pixfmt = 2684356744u;
++      self->private_impl.f_filter_distance = 3u;
++    } else if (self->private_impl.f_depth == 16u) {
++      self->private_impl.f_dst_pixfmt = 2164308923u;
++      self->private_impl.f_src_pixfmt = 2164308923u;
++      self->private_impl.f_filter_distance = 6u;
++      self->private_impl.choosy_filter_and_swizzle = (
++          &wuffs_png__decoder__filter_and_swizzle_tricky);
+     }
+-    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
+-    if (a_dst != NULL) {
+-      wuffs_base__image_config__set(
+-          a_dst,
+-          self->private_impl.f_pixfmt,
+-          0u,
+-          self->private_impl.f_width,
+-          self->private_impl.f_height,
+-          self->private_impl.f_frame_config_io_position,
+-          false);
++  } else if (self->private_impl.f_color_type == 3u) {
++    if (self->private_impl.f_depth == 8u) {
++      self->private_impl.f_dst_pixfmt = 2198077448u;
++      self->private_impl.f_src_pixfmt = 2198077448u;
++      self->private_impl.f_filter_distance = 1u;
++    }
++  } else if (self->private_impl.f_color_type == 4u) {
++    if (self->private_impl.f_depth == 8u) {
++      self->private_impl.f_dst_pixfmt = 553648264u;
++      self->private_impl.f_src_pixfmt = 553648264u;
++      self->private_impl.f_filter_distance = 2u;
++    } else if (self->private_impl.f_depth == 16u) {
++      self->private_impl.f_dst_pixfmt = 2164308923u;
++      self->private_impl.f_src_pixfmt = 2164308923u;
++      self->private_impl.f_filter_distance = 4u;
++      self->private_impl.choosy_filter_and_swizzle = (
++          &wuffs_png__decoder__filter_and_swizzle_tricky);
++    }
++  } else if (self->private_impl.f_color_type == 6u) {
++    if (self->private_impl.f_depth == 8u) {
++      self->private_impl.f_dst_pixfmt = 2164295816u;
++      self->private_impl.f_src_pixfmt = 2701166728u;
++      self->private_impl.f_filter_distance = 4u;
++    } else if (self->private_impl.f_depth == 16u) {
++      self->private_impl.f_dst_pixfmt = 2164308923u;
++      self->private_impl.f_src_pixfmt = 2164308923u;
++      self->private_impl.f_filter_distance = 8u;
++      self->private_impl.choosy_filter_and_swizzle = (
++          &wuffs_png__decoder__filter_and_swizzle_tricky);
+     }
+-    self->private_impl.f_call_sequence = 32u;
+-
+-    goto ok;
+-    ok:
+-    self->private_impl.p_do_decode_image_config[0] = 0;
+-    goto exit;
+-  }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+-
+-  return status;
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-// -------- func netpbm.decoder.decode_frame_config
++// -------- func png.decoder.calculate_bytes_per_row
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_netpbm__decoder__decode_frame_config(
+-    wuffs_netpbm__decoder* self,
+-    wuffs_base__frame_config* a_dst,
+-    wuffs_base__io_buffer* a_src) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-  if (!a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 2)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+-  }
+-  self->private_impl.active_coroutine = 0;
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-
+-  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    while (true) {
+-      {
+-        wuffs_base__status t_0 = wuffs_netpbm__decoder__do_decode_frame_config(self, a_dst, a_src);
+-        v_status = t_0;
+-      }
+-      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_netpbm__error__truncated_input);
+-        goto exit;
+-      }
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+-    }
++static uint64_t
++wuffs_png__decoder__calculate_bytes_per_row(
++    const wuffs_png__decoder* self,
++    uint32_t a_width) {
++  uint64_t v_bytes_per_channel = 0;
+ 
+-    ok:
+-    self->private_impl.p_decode_frame_config[0] = 0;
+-    goto exit;
++  if (self->private_impl.f_depth == 1u) {
++    return ((uint64_t)(((a_width + 7u) / 8u)));
++  } else if (self->private_impl.f_depth == 2u) {
++    return ((uint64_t)(((a_width + 3u) / 4u)));
++  } else if (self->private_impl.f_depth == 4u) {
++    return ((uint64_t)(((a_width + 1u) / 2u)));
+   }
++  v_bytes_per_channel = ((uint64_t)(((uint8_t)(self->private_impl.f_depth >> 3u))));
++  return (((uint64_t)(a_width)) * v_bytes_per_channel * ((uint64_t)(WUFFS_PNG__NUM_CHANNELS[self->private_impl.f_color_type])));
++}
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
++// -------- func png.decoder.choose_filter_implementations
+ 
+-  goto exit;
+-  exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_png__decoder__choose_filter_implementations(
++    wuffs_png__decoder* self) {
++  if (self->private_impl.f_filter_distance == 3u) {
++    self->private_impl.choosy_filter_1 = (
++        &wuffs_png__decoder__filter_1_distance_3_fallback);
++    self->private_impl.choosy_filter_3 = (
++        &wuffs_png__decoder__filter_3_distance_3_fallback);
++    self->private_impl.choosy_filter_4 = (
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
++        wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_4_distance_3_arm_neon :
++#endif
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_4_distance_3_x86_sse42 :
++#endif
++        &wuffs_png__decoder__filter_4_distance_3_fallback);
++  } else if (self->private_impl.f_filter_distance == 4u) {
++    self->private_impl.choosy_filter_1 = (
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
++        wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_1_distance_4_arm_neon :
++#endif
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_1_distance_4_x86_sse42 :
++#endif
++        &wuffs_png__decoder__filter_1_distance_4_fallback);
++    self->private_impl.choosy_filter_3 = (
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
++        wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_3_distance_4_arm_neon :
++#endif
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_3_distance_4_x86_sse42 :
++#endif
++        &wuffs_png__decoder__filter_3_distance_4_fallback);
++    self->private_impl.choosy_filter_4 = (
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
++        wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_4_distance_4_arm_neon :
++#endif
++#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
++        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_4_distance_4_x86_sse42 :
++#endif
++        &wuffs_png__decoder__filter_4_distance_4_fallback);
+   }
+-  return status;
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-// -------- func netpbm.decoder.do_decode_frame_config
++// -------- func png.decoder.decode_other_chunk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_netpbm__decoder__do_decode_frame_config(
+-    wuffs_netpbm__decoder* self,
+-    wuffs_base__frame_config* a_dst,
+-    wuffs_base__io_buffer* a_src) {
++wuffs_png__decoder__decode_other_chunk(
++    wuffs_png__decoder* self,
++    wuffs_base__io_buffer* a_src,
++    bool a_framy) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+   const uint8_t* iop_a_src = NULL;
+@@ -50273,62 +63411,218 @@ wuffs_netpbm__decoder__do_decode_frame_config(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_other_chunk;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if (self->private_impl.f_call_sequence == 32u) {
+-    } else if (self->private_impl.f_call_sequence < 32u) {
+-      if (a_src) {
+-        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++    if ((self->private_impl.f_chunk_type == 1163152464u) &&  ! a_framy) {
++      if (self->private_impl.f_seen_plte) {
++        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++        goto exit;
++      } else if (self->private_impl.f_color_type == 3u) {
++        if (a_src) {
++          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++        }
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        status = wuffs_png__decoder__decode_plte(self, a_src);
++        if (a_src) {
++          iop_a_src = a_src->data.ptr + a_src->meta.ri;
++        }
++        if (status.repr) {
++          goto suspend;
++        }
++      } else if ((self->private_impl.f_color_type == 2u) || (self->private_impl.f_color_type == 6u)) {
++      } else {
++        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++        goto exit;
+       }
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      status = wuffs_netpbm__decoder__do_decode_image_config(self, NULL, a_src);
+-      if (a_src) {
+-        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      self->private_impl.f_seen_plte = true;
++    } else if ((self->private_impl.f_chunk_type & 32u) == 0u) {
++      if (self->private_impl.f_chunk_type != 1413563465u) {
++        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++        goto exit;
+       }
+-      if (status.repr) {
+-        goto suspend;
++    }
++    if (self->private_impl.f_chunk_type == 1716082789u) {
++      if (self->private_impl.f_report_metadata_exif) {
++        if (self->private_impl.f_seen_exif) {
++          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++          goto exit;
++        }
++        if (a_src) {
++          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++        }
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++        status = wuffs_png__decoder__decode_exif(self, a_src);
++        if (a_src) {
++          iop_a_src = a_src->data.ptr + a_src->meta.ri;
++        }
++        if (status.repr) {
++          goto suspend;
++        }
++        self->private_impl.f_seen_exif = true;
+       }
+-    } else if (self->private_impl.f_call_sequence == 40u) {
+-      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
+-        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
+-        goto exit;
++    } else if ((self->private_impl.f_chunk_type == 1951945833u) || (self->private_impl.f_chunk_type == 1951942004u) || (self->private_impl.f_chunk_type == 1951945850u)) {
++      if (self->private_impl.f_report_metadata_kvp) {
++        self->private_impl.f_metadata_flavor = 4u;
++        self->private_impl.f_metadata_fourcc = 1263947851u;
++        self->private_impl.f_metadata_x = 0u;
++        self->private_impl.f_metadata_y = 0u;
++        self->private_impl.f_metadata_z = 0u;
++      }
++    } else if ( ! a_framy) {
++      if (self->private_impl.f_chunk_type == 1280598881u) {
++        if (self->private_impl.f_seen_actl) {
++          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++          goto exit;
++        }
++        if (a_src) {
++          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++        }
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++        status = wuffs_png__decoder__decode_actl(self, a_src);
++        if (a_src) {
++          iop_a_src = a_src->data.ptr + a_src->meta.ri;
++        }
++        if (status.repr) {
++          goto suspend;
++        }
++        self->private_impl.f_seen_actl = true;
++      } else if (self->private_impl.f_chunk_type == 1297238115u) {
++        if (self->private_impl.f_report_metadata_chrm) {
++          if (self->private_impl.f_seen_chrm) {
++            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++            goto exit;
++          }
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++          status = wuffs_png__decoder__decode_chrm(self, a_src);
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++          if (status.repr) {
++            goto suspend;
++          }
++          self->private_impl.f_seen_chrm = true;
++        }
++      } else if (self->private_impl.f_chunk_type == 1280598886u) {
++        if (self->private_impl.f_seen_fctl) {
++          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++          goto exit;
++        }
++        if (a_src) {
++          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++        }
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++        status = wuffs_png__decoder__decode_fctl(self, a_src);
++        if (a_src) {
++          iop_a_src = a_src->data.ptr + a_src->meta.ri;
++        }
++        if (status.repr) {
++          goto suspend;
++        }
++        self->private_impl.f_seen_fctl = true;
++      } else if (self->private_impl.f_chunk_type == 1095582055u) {
++        if (self->private_impl.f_report_metadata_gama) {
++          if (self->private_impl.f_seen_gama) {
++            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++            goto exit;
++          }
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++          status = wuffs_png__decoder__decode_gama(self, a_src);
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++          if (status.repr) {
++            goto suspend;
++          }
++          self->private_impl.f_seen_gama = true;
++        }
++      } else if (self->private_impl.f_chunk_type == 1346585449u) {
++        if (self->private_impl.f_report_metadata_iccp) {
++          if (self->private_impl.f_seen_iccp) {
++            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++            goto exit;
++          }
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++          status = wuffs_png__decoder__decode_iccp(self, a_src);
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++          if (status.repr) {
++            goto suspend;
++          }
++          self->private_impl.f_seen_iccp = true;
++        }
++      } else if (self->private_impl.f_chunk_type == 1111970419u) {
++        if (self->private_impl.f_report_metadata_srgb) {
++          if (self->private_impl.f_seen_srgb) {
++            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++            goto exit;
++          }
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++          status = wuffs_png__decoder__decode_srgb(self, a_src);
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++          if (status.repr) {
++            goto suspend;
++          }
++          self->private_impl.f_seen_srgb = true;
++        }
++      } else if (self->private_impl.f_chunk_type == 1397641844u) {
++        if (self->private_impl.f_seen_trns || ((self->private_impl.f_color_type == 3u) &&  ! self->private_impl.f_seen_plte)) {
++          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++          goto exit;
++        } else if (self->private_impl.f_color_type > 3u) {
++        } else {
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++          status = wuffs_png__decoder__decode_trns(self, a_src);
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++          if (status.repr) {
++            goto suspend;
++          }
++        }
++        self->private_impl.f_seen_trns = true;
+       }
+-    } else if (self->private_impl.f_call_sequence == 64u) {
+-      self->private_impl.f_call_sequence = 96u;
+-      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-      goto ok;
+-    } else {
+-      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-      goto ok;
+     }
+-    if (a_dst != NULL) {
+-      wuffs_base__frame_config__set(
+-          a_dst,
+-          wuffs_base__utility__make_rect_ie_u32(
+-          0u,
+-          0u,
+-          self->private_impl.f_width,
+-          self->private_impl.f_height),
+-          ((wuffs_base__flicks)(0u)),
+-          0u,
+-          self->private_impl.f_frame_config_io_position,
+-          0u,
+-          false,
+-          false,
+-          0u);
++    if (self->private_impl.f_metadata_fourcc == 0u) {
++      self->private_data.s_decode_other_chunk.scratch = self->private_impl.f_chunk_length;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
++      if (self->private_data.s_decode_other_chunk.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++        self->private_data.s_decode_other_chunk.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++        iop_a_src = io2_a_src;
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      iop_a_src += self->private_data.s_decode_other_chunk.scratch;
+     }
+-    self->private_impl.f_call_sequence = 64u;
+ 
++    goto ok;
+     ok:
+-    self->private_impl.p_do_decode_frame_config[0] = 0;
++    self->private_impl.p_decode_other_chunk = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.p_decode_other_chunk = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+   goto exit;
+   exit:
+@@ -50339,181 +63633,130 @@ wuffs_netpbm__decoder__do_decode_frame_config(
+   return status;
+ }
+ 
+-// -------- func netpbm.decoder.decode_frame
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_netpbm__decoder__decode_frame(
+-    wuffs_netpbm__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-  if (!a_dst || !a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 3)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+-  }
+-  self->private_impl.active_coroutine = 0;
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-
+-  uint32_t coro_susp_point = self->private_impl.p_decode_frame[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    while (true) {
+-      {
+-        wuffs_base__status t_0 = wuffs_netpbm__decoder__do_decode_frame(self,
+-            a_dst,
+-            a_src,
+-            a_blend,
+-            a_workbuf,
+-            a_opts);
+-        v_status = t_0;
+-      }
+-      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_netpbm__error__truncated_input);
+-        goto exit;
+-      }
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+-    }
+-
+-    ok:
+-    self->private_impl.p_decode_frame[0] = 0;
+-    goto exit;
+-  }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
+-
+-  goto exit;
+-  exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-  }
+-  return status;
+-}
+-
+-// -------- func netpbm.decoder.do_decode_frame
++// -------- func png.decoder.decode_actl
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_netpbm__decoder__do_decode_frame(
+-    wuffs_netpbm__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts) {
++wuffs_png__decoder__decode_actl(
++    wuffs_png__decoder* self,
++    wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_actl;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if (self->private_impl.f_call_sequence == 64u) {
+-    } else if (self->private_impl.f_call_sequence < 64u) {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      status = wuffs_netpbm__decoder__do_decode_frame_config(self, NULL, a_src);
+-      if (status.repr) {
+-        goto suspend;
+-      }
+-    } else {
+-      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-      goto ok;
++    if (self->private_impl.f_chunk_length != 8u) {
++      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++      goto exit;
++    } else if (self->private_impl.f_interlace_pass > 0u) {
++      status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
++      goto exit;
+     }
+-    self->private_impl.f_dst_x = 0u;
+-    self->private_impl.f_dst_y = 0u;
+-    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
+-        wuffs_base__pixel_buffer__pixel_format(a_dst),
+-        wuffs_base__pixel_buffer__palette(a_dst),
+-        wuffs_base__utility__make_pixel_format(self->private_impl.f_pixfmt),
+-        wuffs_base__utility__empty_slice_u8(),
+-        a_blend);
+-    if ( ! wuffs_base__status__is_ok(&v_status)) {
+-      status = v_status;
+-      if (wuffs_base__status__is_error(&status)) {
+-        goto exit;
+-      } else if (wuffs_base__status__is_suspension(&status)) {
+-        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
+-        goto exit;
++    self->private_impl.f_chunk_length = 0u;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      uint32_t t_0;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_decode_actl.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_actl.scratch;
++          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
++          *scratch >>= 8;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
++          if (num_bits_0 == 24) {
++            t_0 = ((uint32_t)(*scratch >> 32));
++            break;
++          }
++          num_bits_0 += 8u;
++          *scratch |= ((uint64_t)(num_bits_0));
++        }
+       }
+-      goto ok;
++      self->private_impl.f_num_animation_frames_value = t_0;
+     }
+-    while (true) {
+-      v_status = wuffs_netpbm__decoder__swizzle(self, a_dst, a_src);
+-      if (wuffs_base__status__is_ok(&v_status)) {
+-        break;
+-      } else if (v_status.repr != wuffs_netpbm__note__internal_note_short_read) {
+-        status = v_status;
+-        if (wuffs_base__status__is_error(&status)) {
+-          goto exit;
+-        } else if (wuffs_base__status__is_suspension(&status)) {
+-          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
+-          goto exit;
++    if (self->private_impl.f_num_animation_frames_value == 0u) {
++      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++      goto exit;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++      uint32_t t_1;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_decode_actl.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_actl.scratch;
++          uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
++          *scratch >>= 8;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
++          if (num_bits_1 == 24) {
++            t_1 = ((uint32_t)(*scratch >> 32));
++            break;
++          }
++          num_bits_1 += 8u;
++          *scratch |= ((uint64_t)(num_bits_1));
+         }
+-        goto ok;
+       }
+-      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
++      self->private_impl.f_num_animation_loops_value = t_1;
+     }
+-    self->private_impl.f_call_sequence = 96u;
+ 
++    goto ok;
+     ok:
+-    self->private_impl.p_do_decode_frame[0] = 0;
++    self->private_impl.p_decode_actl = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.p_decode_actl = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+   goto exit;
+   exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
+   return status;
+ }
+ 
+-// -------- func netpbm.decoder.swizzle
++// -------- func png.decoder.decode_chrm
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_netpbm__decoder__swizzle(
+-    wuffs_netpbm__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
++wuffs_png__decoder__decode_chrm(
++    wuffs_png__decoder* self,
+     wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  wuffs_base__pixel_format v_dst_pixfmt = {0};
+-  uint32_t v_dst_bits_per_pixel = 0;
+-  uint32_t v_dst_bytes_per_pixel = 0;
+-  uint64_t v_dst_bytes_per_row = 0;
+-  uint32_t v_src_bytes_per_pixel = 0;
+-  wuffs_base__table_u8 v_tab = {0};
+-  wuffs_base__slice_u8 v_dst = {0};
+-  uint64_t v_i = 0;
+-  uint64_t v_j = 0;
+-  uint64_t v_n = 0;
++  uint64_t v_u = 0;
+ 
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -50526,543 +63769,337 @@ wuffs_netpbm__decoder__swizzle(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
+-  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
+-  if ((v_dst_bits_per_pixel & 7u) != 0u) {
+-    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
+-    goto exit;
+-  }
+-  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
+-  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
+-  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
+-  while (true) {
+-    if (self->private_impl.f_dst_x == self->private_impl.f_width) {
+-      self->private_impl.f_dst_x = 0u;
+-      self->private_impl.f_dst_y += 1u;
+-      if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
+-        break;
+-      }
+-    }
+-    v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
+-    if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
+-      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
++  uint32_t coro_susp_point = self->private_impl.p_decode_chrm;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_chunk_length != 32u) {
++      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++      goto exit;
+     }
+-    v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
+-    if (v_i >= ((uint64_t)(v_dst.len))) {
+-      v_src_bytes_per_pixel = 1u;
+-      if (self->private_impl.f_pixfmt == 2684356744u) {
+-        v_src_bytes_per_pixel = 3u;
+-      }
+-      v_n = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(v_src_bytes_per_pixel)));
+-      v_n = wuffs_base__u64__min(v_n, ((uint64_t)(((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x)))));
+-      v_j = v_n;
+-      while (v_j >= 8u) {
+-        if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 8u)))) {
+-          iop_a_src += (v_src_bytes_per_pixel * 8u);
++    self->private_impl.f_chunk_length = 0u;
++    self->private_impl.f_metadata_flavor = 5u;
++    self->private_impl.f_metadata_fourcc = 1128813133u;
++    self->private_impl.f_metadata_x = 0u;
++    self->private_impl.f_metadata_y = 0u;
++    self->private_impl.f_metadata_z = 0u;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      uint64_t t_0;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_0 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_decode_chrm.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_chrm.scratch;
++          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
++          *scratch >>= 8;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
++          if (num_bits_0 == 24) {
++            t_0 = ((uint64_t)(*scratch >> 32));
++            break;
++          }
++          num_bits_0 += 8u;
++          *scratch |= ((uint64_t)(num_bits_0));
+         }
+-        v_j -= 8u;
+       }
+-      while (v_j > 0u) {
+-        if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 1u)))) {
+-          iop_a_src += (v_src_bytes_per_pixel * 1u);
++      v_u = t_0;
++    }
++    self->private_impl.f_metadata_x |= ((16777215u & v_u) << 0u);
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++      uint64_t t_1;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_1 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_decode_chrm.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_chrm.scratch;
++          uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
++          *scratch >>= 8;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
++          if (num_bits_1 == 24) {
++            t_1 = ((uint64_t)(*scratch >> 32));
++            break;
++          }
++          num_bits_1 += 8u;
++          *scratch |= ((uint64_t)(num_bits_1));
+         }
+-        v_j -= 1u;
+       }
+-    } else {
+-      v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
+-          &self->private_impl.f_swizzler,
+-          wuffs_base__slice_u8__subslice_i(v_dst, v_i),
+-          wuffs_base__pixel_buffer__palette(a_dst),
+-          &iop_a_src,
+-          io2_a_src);
+-    }
+-    if (v_n == 0u) {
+-      status = wuffs_base__make_status(wuffs_netpbm__note__internal_note_short_read);
+-      goto ok;
++      v_u = t_1;
+     }
+-    wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
+-  }
+-  status = wuffs_base__make_status(NULL);
+-  goto ok;
+-
+-  ok:
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
+-
+-  return status;
+-}
+-
+-// -------- func netpbm.decoder.frame_dirty_rect
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
+-wuffs_netpbm__decoder__frame_dirty_rect(
+-    const wuffs_netpbm__decoder* self) {
+-  if (!self) {
+-    return wuffs_base__utility__empty_rect_ie_u32();
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_rect_ie_u32();
+-  }
+-
+-  return wuffs_base__utility__make_rect_ie_u32(
+-      0u,
+-      0u,
+-      self->private_impl.f_width,
+-      self->private_impl.f_height);
+-}
+-
+-// -------- func netpbm.decoder.num_animation_loops
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_netpbm__decoder__num_animation_loops(
+-    const wuffs_netpbm__decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
+-
+-  return 0u;
+-}
+-
+-// -------- func netpbm.decoder.num_decoded_frame_configs
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_netpbm__decoder__num_decoded_frame_configs(
+-    const wuffs_netpbm__decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
+-
+-  if (self->private_impl.f_call_sequence > 32u) {
+-    return 1u;
+-  }
+-  return 0u;
+-}
+-
+-// -------- func netpbm.decoder.num_decoded_frames
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_netpbm__decoder__num_decoded_frames(
+-    const wuffs_netpbm__decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
+-
+-  if (self->private_impl.f_call_sequence > 64u) {
+-    return 1u;
+-  }
+-  return 0u;
+-}
+-
+-// -------- func netpbm.decoder.restart_frame
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_netpbm__decoder__restart_frame(
+-    wuffs_netpbm__decoder* self,
+-    uint64_t a_index,
+-    uint64_t a_io_position) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-
+-  if (self->private_impl.f_call_sequence < 32u) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
+-  }
+-  if ((a_index != 0u) || (a_io_position != self->private_impl.f_frame_config_io_position)) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  self->private_impl.f_call_sequence = 40u;
+-  return wuffs_base__make_status(NULL);
+-}
+-
+-// -------- func netpbm.decoder.set_report_metadata
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_netpbm__decoder__set_report_metadata(
+-    wuffs_netpbm__decoder* self,
+-    uint32_t a_fourcc,
+-    bool a_report) {
+-  return wuffs_base__make_empty_struct();
+-}
+-
+-// -------- func netpbm.decoder.tell_me_more
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_netpbm__decoder__tell_me_more(
+-    wuffs_netpbm__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__more_information* a_minfo,
+-    wuffs_base__io_buffer* a_src) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-  if (!a_dst || !a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 4)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+-  }
+-  self->private_impl.active_coroutine = 0;
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  status = wuffs_base__make_status(wuffs_base__error__no_more_information);
+-  goto exit;
+-
+-  goto ok;
+-  ok:
+-  goto exit;
+-  exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-  }
+-  return status;
+-}
+-
+-// -------- func netpbm.decoder.history_retain_length
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_netpbm__decoder__history_retain_length(
+-    const wuffs_netpbm__decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
+-
+-  return 0u;
+-}
+-
+-// -------- func netpbm.decoder.workbuf_len
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_netpbm__decoder__workbuf_len(
+-    const wuffs_netpbm__decoder* self) {
+-  if (!self) {
+-    return wuffs_base__utility__empty_range_ii_u64();
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_range_ii_u64();
+-  }
+-
+-  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
+-}
+-
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM)
+-
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE)
+-
+-// ---------------- Status Codes Implementations
+-
+-const char wuffs_nie__error__bad_header[] = "#nie: bad header";
+-const char wuffs_nie__error__truncated_input[] = "#nie: truncated input";
+-const char wuffs_nie__error__unsupported_nie_file[] = "#nie: unsupported NIE file";
+-const char wuffs_nie__note__internal_note_short_read[] = "@nie: internal note: short read";
+-
+-// ---------------- Private Consts
+-
+-// ---------------- Private Initializer Prototypes
+-
+-// ---------------- Private Function Prototypes
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_nie__decoder__do_decode_image_config(
+-    wuffs_nie__decoder* self,
+-    wuffs_base__image_config* a_dst,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_nie__decoder__do_decode_frame_config(
+-    wuffs_nie__decoder* self,
+-    wuffs_base__frame_config* a_dst,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_nie__decoder__do_decode_frame(
+-    wuffs_nie__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_nie__decoder__swizzle(
+-    wuffs_nie__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src);
+-
+-// ---------------- VTables
+-
+-const wuffs_base__image_decoder__func_ptrs
+-wuffs_nie__decoder__func_ptrs_for__wuffs_base__image_decoder = {
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__pixel_buffer*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__pixel_blend,
+-      wuffs_base__slice_u8,
+-      wuffs_base__decode_frame_options*))(&wuffs_nie__decoder__decode_frame),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__frame_config*,
+-      wuffs_base__io_buffer*))(&wuffs_nie__decoder__decode_frame_config),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__image_config*,
+-      wuffs_base__io_buffer*))(&wuffs_nie__decoder__decode_image_config),
+-  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_nie__decoder__frame_dirty_rect),
+-  (uint64_t(*)(const void*,
+-      uint32_t))(&wuffs_nie__decoder__get_quirk),
+-  (uint64_t(*)(const void*))(&wuffs_nie__decoder__history_retain_length),
+-  (uint32_t(*)(const void*))(&wuffs_nie__decoder__num_animation_loops),
+-  (uint64_t(*)(const void*))(&wuffs_nie__decoder__num_decoded_frame_configs),
+-  (uint64_t(*)(const void*))(&wuffs_nie__decoder__num_decoded_frames),
+-  (wuffs_base__status(*)(void*,
+-      uint64_t,
+-      uint64_t))(&wuffs_nie__decoder__restart_frame),
+-  (wuffs_base__status(*)(void*,
+-      uint32_t,
+-      uint64_t))(&wuffs_nie__decoder__set_quirk),
+-  (wuffs_base__empty_struct(*)(void*,
+-      uint32_t,
+-      bool))(&wuffs_nie__decoder__set_report_metadata),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__more_information*,
+-      wuffs_base__io_buffer*))(&wuffs_nie__decoder__tell_me_more),
+-  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_nie__decoder__workbuf_len),
+-};
+-
+-// ---------------- Initializer Implementations
+-
+-wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_nie__decoder__initialize(
+-    wuffs_nie__decoder* self,
+-    size_t sizeof_star_self,
+-    uint64_t wuffs_version,
+-    uint32_t options){
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (sizeof(*self) != sizeof_star_self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
+-  }
+-  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
+-      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
+-  }
+-
+-  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
+-    // The whole point of this if-check is to detect an uninitialized *self.
+-    // We disable the warning on GCC. Clang-5.0 does not have this warning.
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+-#endif
+-    if (self->private_impl.magic != 0) {
+-      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++    self->private_impl.f_metadata_x |= ((16777215u & v_u) << 24u);
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++      uint64_t t_2;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_2 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_decode_chrm.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_chrm.scratch;
++          uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu));
++          *scratch >>= 8;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
++          if (num_bits_2 == 24) {
++            t_2 = ((uint64_t)(*scratch >> 32));
++            break;
++          }
++          num_bits_2 += 8u;
++          *scratch |= ((uint64_t)(num_bits_2));
++        }
++      }
++      v_u = t_2;
+     }
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-  } else {
+-    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
+-      memset(self, 0, sizeof(*self));
+-      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
+-    } else {
+-      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++    self->private_impl.f_metadata_x |= ((uint64_t)((16777215u & v_u) << 48u));
++    self->private_impl.f_metadata_y |= ((16777215u & v_u) >> 16u);
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++      uint64_t t_3;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_3 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_decode_chrm.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_chrm.scratch;
++          uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu));
++          *scratch >>= 8;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
++          if (num_bits_3 == 24) {
++            t_3 = ((uint64_t)(*scratch >> 32));
++            break;
++          }
++          num_bits_3 += 8u;
++          *scratch |= ((uint64_t)(num_bits_3));
++        }
++      }
++      v_u = t_3;
+     }
+-  }
+-
+-  self->private_impl.magic = WUFFS_BASE__MAGIC;
+-  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
+-      wuffs_base__image_decoder__vtable_name;
+-  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
+-      (const void*)(&wuffs_nie__decoder__func_ptrs_for__wuffs_base__image_decoder);
+-  return wuffs_base__make_status(NULL);
+-}
+-
+-wuffs_nie__decoder*
+-wuffs_nie__decoder__alloc(void) {
+-  wuffs_nie__decoder* x =
+-      (wuffs_nie__decoder*)(calloc(sizeof(wuffs_nie__decoder), 1));
+-  if (!x) {
+-    return NULL;
+-  }
+-  if (wuffs_nie__decoder__initialize(
+-      x, sizeof(wuffs_nie__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
+-    free(x);
+-    return NULL;
+-  }
+-  return x;
+-}
+-
+-size_t
+-sizeof__wuffs_nie__decoder(void) {
+-  return sizeof(wuffs_nie__decoder);
+-}
+-
+-// ---------------- Function Implementations
+-
+-// -------- func nie.decoder.get_quirk
++    self->private_impl.f_metadata_y |= ((16777215u & v_u) << 8u);
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++      uint64_t t_4;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_4 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_decode_chrm.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_chrm.scratch;
++          uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFFu));
++          *scratch >>= 8;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4);
++          if (num_bits_4 == 24) {
++            t_4 = ((uint64_t)(*scratch >> 32));
++            break;
++          }
++          num_bits_4 += 8u;
++          *scratch |= ((uint64_t)(num_bits_4));
++        }
++      }
++      v_u = t_4;
++    }
++    self->private_impl.f_metadata_y |= ((16777215u & v_u) << 32u);
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
++      uint64_t t_5;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_5 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_decode_chrm.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_chrm.scratch;
++          uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFFu));
++          *scratch >>= 8;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5);
++          if (num_bits_5 == 24) {
++            t_5 = ((uint64_t)(*scratch >> 32));
++            break;
++          }
++          num_bits_5 += 8u;
++          *scratch |= ((uint64_t)(num_bits_5));
++        }
++      }
++      v_u = t_5;
++    }
++    self->private_impl.f_metadata_y |= ((uint64_t)((16777215u & v_u) << 56u));
++    self->private_impl.f_metadata_z |= ((16777215u & v_u) >> 8u);
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
++      uint64_t t_6;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_6 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_decode_chrm.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_chrm.scratch;
++          uint32_t num_bits_6 = ((uint32_t)(*scratch & 0xFFu));
++          *scratch >>= 8;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_6);
++          if (num_bits_6 == 24) {
++            t_6 = ((uint64_t)(*scratch >> 32));
++            break;
++          }
++          num_bits_6 += 8u;
++          *scratch |= ((uint64_t)(num_bits_6));
++        }
++      }
++      v_u = t_6;
++    }
++    self->private_impl.f_metadata_z |= ((16777215u & v_u) << 16u);
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
++      uint64_t t_7;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_7 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_decode_chrm.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_chrm.scratch;
++          uint32_t num_bits_7 = ((uint32_t)(*scratch & 0xFFu));
++          *scratch >>= 8;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_7);
++          if (num_bits_7 == 24) {
++            t_7 = ((uint64_t)(*scratch >> 32));
++            break;
++          }
++          num_bits_7 += 8u;
++          *scratch |= ((uint64_t)(num_bits_7));
++        }
++      }
++      v_u = t_7;
++    }
++    self->private_impl.f_metadata_z |= ((16777215u & v_u) << 40u);
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_nie__decoder__get_quirk(
+-    const wuffs_nie__decoder* self,
+-    uint32_t a_key) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
++    goto ok;
++    ok:
++    self->private_impl.p_decode_chrm = 0;
++    goto exit;
+   }
+ 
+-  return 0u;
+-}
+-
+-// -------- func nie.decoder.set_quirk
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_chrm = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_nie__decoder__set_quirk(
+-    wuffs_nie__decoder* self,
+-    uint32_t a_key,
+-    uint64_t a_value) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+ 
+-  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++  return status;
+ }
+ 
+-// -------- func nie.decoder.decode_image_config
++// -------- func png.decoder.decode_exif
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_nie__decoder__decode_image_config(
+-    wuffs_nie__decoder* self,
+-    wuffs_base__image_config* a_dst,
++static wuffs_base__status
++wuffs_png__decoder__decode_exif(
++    wuffs_png__decoder* self,
+     wuffs_base__io_buffer* a_src) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-  if (!a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 1)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+-  }
+-  self->private_impl.active_coroutine = 0;
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-
+-  uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    while (true) {
+-      {
+-        wuffs_base__status t_0 = wuffs_nie__decoder__do_decode_image_config(self, a_dst, a_src);
+-        v_status = t_0;
+-      }
+-      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_nie__error__truncated_input);
+-        goto exit;
+-      }
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+-    }
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
+ 
+-    ok:
+-    self->private_impl.p_decode_image_config[0] = 0;
++  if (self->private_impl.f_chunk_length < 4u) {
++    status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+     goto exit;
+   }
++  self->private_impl.f_metadata_flavor = 3u;
++  self->private_impl.f_metadata_fourcc = 1163413830u;
++  self->private_impl.f_metadata_x = 0u;
++  self->private_impl.f_metadata_y = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
++  self->private_impl.f_metadata_z = wuffs_base__u64__sat_add(self->private_impl.f_metadata_y, ((uint64_t)(self->private_impl.f_chunk_length)));
++  self->private_impl.f_chunk_length = 0u;
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
+-
++  goto ok;
++  ok:
+   goto exit;
+   exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
++
+   return status;
+ }
+ 
+-// -------- func nie.decoder.do_decode_image_config
++// -------- func png.decoder.decode_fctl
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_nie__decoder__do_decode_image_config(
+-    wuffs_nie__decoder* self,
+-    wuffs_base__image_config* a_dst,
++wuffs_png__decoder__decode_fctl(
++    wuffs_png__decoder* self,
+     wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t v_a = 0;
++  uint32_t v_x0 = 0;
++  uint32_t v_y0 = 0;
++  uint32_t v_x1 = 0;
++  uint32_t v_y1 = 0;
+ 
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -51075,185 +64112,309 @@ wuffs_nie__decoder__do_decode_image_config(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_fctl;
++  if (coro_susp_point) {
++    v_x0 = self->private_data.s_decode_fctl.v_x0;
++    v_x1 = self->private_data.s_decode_fctl.v_x1;
++    v_y1 = self->private_data.s_decode_fctl.v_y1;
++  }
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if (self->private_impl.f_call_sequence != 0u) {
+-      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++    if (self->private_impl.f_chunk_length != 26u) {
++      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+       goto exit;
+     }
++    self->private_impl.f_chunk_length = 0u;
+     {
+       WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+       uint32_t t_0;
+       if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++        t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+         iop_a_src += 4;
+       } else {
+-        self->private_data.s_do_decode_image_config[0].scratch = 0;
++        self->private_data.s_decode_fctl.scratch = 0;
+         WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+         while (true) {
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
+-          *scratch <<= 8;
++          uint64_t* scratch = &self->private_data.s_decode_fctl.scratch;
++          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
+           *scratch >>= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
+           if (num_bits_0 == 24) {
+-            t_0 = ((uint32_t)(*scratch));
++            t_0 = ((uint32_t)(*scratch >> 32));
+             break;
+           }
+           num_bits_0 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_0)) << 56;
++          *scratch |= ((uint64_t)(num_bits_0));
+         }
+       }
+-      v_a = t_0;
++      v_x0 = t_0;
+     }
+-    if (v_a != 1169146734u) {
+-      status = wuffs_base__make_status(wuffs_nie__error__bad_header);
++    if (v_x0 != self->private_impl.f_next_animation_seq_num) {
++      status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number);
++      goto exit;
++    } else if (self->private_impl.f_next_animation_seq_num >= 4294967295u) {
++      status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
+       goto exit;
+     }
++    self->private_impl.f_next_animation_seq_num += 1u;
+     {
+       WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+       uint32_t t_1;
+       if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++        t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+         iop_a_src += 4;
+       } else {
+-        self->private_data.s_do_decode_image_config[0].scratch = 0;
++        self->private_data.s_decode_fctl.scratch = 0;
+         WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+         while (true) {
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
+-          *scratch <<= 8;
++          uint64_t* scratch = &self->private_data.s_decode_fctl.scratch;
++          uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
+           *scratch >>= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
+           if (num_bits_1 == 24) {
+-            t_1 = ((uint32_t)(*scratch));
++            t_1 = ((uint32_t)(*scratch >> 32));
+             break;
+           }
+           num_bits_1 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_1)) << 56;
++          *scratch |= ((uint64_t)(num_bits_1));
+         }
+       }
+-      v_a = t_1;
+-    }
+-    if (v_a == 879649535u) {
+-      self->private_impl.f_pixfmt = 2164295816u;
+-    } else if (v_a == 946758399u) {
+-      self->private_impl.f_pixfmt = 2164308923u;
+-    } else if (v_a == 879780607u) {
+-      status = wuffs_base__make_status(wuffs_nie__error__unsupported_nie_file);
+-      goto exit;
+-    } else if (v_a == 946889471u) {
+-      status = wuffs_base__make_status(wuffs_nie__error__unsupported_nie_file);
+-      goto exit;
+-    } else {
+-      status = wuffs_base__make_status(wuffs_nie__error__bad_header);
+-      goto exit;
++      v_x1 = t_1;
+     }
+     {
+       WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+       uint32_t t_2;
+       if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++        t_2 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+         iop_a_src += 4;
+       } else {
+-        self->private_data.s_do_decode_image_config[0].scratch = 0;
++        self->private_data.s_decode_fctl.scratch = 0;
+         WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+         while (true) {
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-          uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
+-          *scratch <<= 8;
++          uint64_t* scratch = &self->private_data.s_decode_fctl.scratch;
++          uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu));
+           *scratch >>= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
+           if (num_bits_2 == 24) {
+-            t_2 = ((uint32_t)(*scratch));
++            t_2 = ((uint32_t)(*scratch >> 32));
+             break;
+           }
+           num_bits_2 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_2)) << 56;
++          *scratch |= ((uint64_t)(num_bits_2));
+         }
+       }
+-      v_a = t_2;
+-    }
+-    if (v_a > 2147483647u) {
+-      status = wuffs_base__make_status(wuffs_nie__error__bad_header);
+-      goto exit;
+-    } else if (v_a > 16777215u) {
+-      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
+-      goto exit;
++      v_y1 = t_2;
+     }
+-    self->private_impl.f_width = v_a;
+     {
+       WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+       uint32_t t_3;
+       if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_3 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++        t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+         iop_a_src += 4;
+       } else {
+-        self->private_data.s_do_decode_image_config[0].scratch = 0;
++        self->private_data.s_decode_fctl.scratch = 0;
+         WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
+         while (true) {
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-          uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
++          uint64_t* scratch = &self->private_data.s_decode_fctl.scratch;
++          uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu));
++          *scratch >>= 8;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
++          if (num_bits_3 == 24) {
++            t_3 = ((uint32_t)(*scratch >> 32));
++            break;
++          }
++          num_bits_3 += 8u;
++          *scratch |= ((uint64_t)(num_bits_3));
++        }
++      }
++      v_x0 = t_3;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++      uint32_t t_4;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_4 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_decode_fctl.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_fctl.scratch;
++          uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFFu));
++          *scratch >>= 8;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4);
++          if (num_bits_4 == 24) {
++            t_4 = ((uint32_t)(*scratch >> 32));
++            break;
++          }
++          num_bits_4 += 8u;
++          *scratch |= ((uint64_t)(num_bits_4));
++        }
++      }
++      v_y0 = t_4;
++    }
++    v_x1 += v_x0;
++    v_y1 += v_y0;
++    if ((v_x0 >= v_x1) ||
++        (v_x0 > self->private_impl.f_width) ||
++        (v_x1 > self->private_impl.f_width) ||
++        (v_y0 >= v_y1) ||
++        (v_y0 > self->private_impl.f_height) ||
++        (v_y1 > self->private_impl.f_height)) {
++      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++      goto exit;
++    }
++    self->private_impl.f_frame_rect_x0 = v_x0;
++    self->private_impl.f_frame_rect_y0 = v_y0;
++    self->private_impl.f_frame_rect_x1 = v_x1;
++    self->private_impl.f_frame_rect_y1 = v_y1;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
++      uint32_t t_5;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++        t_5 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
++        iop_a_src += 2;
++      } else {
++        self->private_data.s_decode_fctl.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_fctl.scratch;
++          uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFFu));
++          *scratch >>= 8;
+           *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5);
++          if (num_bits_5 == 8) {
++            t_5 = ((uint32_t)(*scratch >> 48));
++            break;
++          }
++          num_bits_5 += 8u;
++          *scratch |= ((uint64_t)(num_bits_5));
++        }
++      }
++      v_x0 = t_5;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
++      uint32_t t_6;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++        t_6 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
++        iop_a_src += 2;
++      } else {
++        self->private_data.s_decode_fctl.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_fctl.scratch;
++          uint32_t num_bits_6 = ((uint32_t)(*scratch & 0xFFu));
+           *scratch >>= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
+-          if (num_bits_3 == 24) {
+-            t_3 = ((uint32_t)(*scratch));
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_6);
++          if (num_bits_6 == 8) {
++            t_6 = ((uint32_t)(*scratch >> 48));
+             break;
+           }
+-          num_bits_3 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_3)) << 56;
++          num_bits_6 += 8u;
++          *scratch |= ((uint64_t)(num_bits_6));
+         }
+       }
+-      v_a = t_3;
++      v_x1 = t_6;
+     }
+-    if (v_a > 2147483647u) {
+-      status = wuffs_base__make_status(wuffs_nie__error__bad_header);
++    if (v_x1 <= 0u) {
++      self->private_impl.f_frame_duration = (((uint64_t)(v_x0)) * 7056000u);
++    } else {
++      self->private_impl.f_frame_duration = ((((uint64_t)(v_x0)) * 705600000u) / ((uint64_t)(v_x1)));
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint32_t t_7 = *iop_a_src++;
++      v_x0 = t_7;
++    }
++    if (v_x0 == 0u) {
++      self->private_impl.f_frame_disposal = 0u;
++    } else if (v_x0 == 1u) {
++      self->private_impl.f_frame_disposal = 1u;
++    } else if (v_x0 == 2u) {
++      self->private_impl.f_frame_disposal = 2u;
++    } else {
++      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+       goto exit;
+-    } else if (v_a > 16777215u) {
+-      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint32_t t_8 = *iop_a_src++;
++      v_x0 = t_8;
++    }
++    if (v_x0 == 0u) {
++      self->private_impl.f_frame_overwrite_instead_of_blend = true;
++    } else if (v_x0 == 1u) {
++      self->private_impl.f_frame_overwrite_instead_of_blend = false;
++    } else {
++      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+       goto exit;
+     }
+-    self->private_impl.f_height = v_a;
+-    if (a_dst != NULL) {
+-      wuffs_base__image_config__set(
+-          a_dst,
+-          self->private_impl.f_pixfmt,
+-          0u,
+-          self->private_impl.f_width,
+-          self->private_impl.f_height,
+-          16u,
+-          false);
++    if (self->private_impl.f_num_decoded_frame_configs_value == 0u) {
++      self->private_impl.f_first_rect_x0 = self->private_impl.f_frame_rect_x0;
++      self->private_impl.f_first_rect_y0 = self->private_impl.f_frame_rect_y0;
++      self->private_impl.f_first_rect_x1 = self->private_impl.f_frame_rect_x1;
++      self->private_impl.f_first_rect_y1 = self->private_impl.f_frame_rect_y1;
++      self->private_impl.f_first_duration = self->private_impl.f_frame_duration;
++      self->private_impl.f_first_disposal = self->private_impl.f_frame_disposal;
++      self->private_impl.f_first_overwrite_instead_of_blend = self->private_impl.f_frame_overwrite_instead_of_blend;
+     }
+-    self->private_impl.f_call_sequence = 32u;
+ 
+     goto ok;
+     ok:
+-    self->private_impl.p_do_decode_image_config[0] = 0;
++    self->private_impl.p_decode_fctl = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.p_decode_fctl = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_fctl.v_x0 = v_x0;
++  self->private_data.s_decode_fctl.v_x1 = v_x1;
++  self->private_data.s_decode_fctl.v_y1 = v_y1;
+ 
+   goto exit;
+   exit:
+@@ -51264,82 +64425,99 @@ wuffs_nie__decoder__do_decode_image_config(
+   return status;
+ }
+ 
+-// -------- func nie.decoder.decode_frame_config
++// -------- func png.decoder.decode_gama
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_nie__decoder__decode_frame_config(
+-    wuffs_nie__decoder* self,
+-    wuffs_base__frame_config* a_dst,
++static wuffs_base__status
++wuffs_png__decoder__decode_gama(
++    wuffs_png__decoder* self,
+     wuffs_base__io_buffer* a_src) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-  if (!a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 2)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+-  }
+-  self->private_impl.active_coroutine = 0;
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_gama;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    while (true) {
+-      {
+-        wuffs_base__status t_0 = wuffs_nie__decoder__do_decode_frame_config(self, a_dst, a_src);
+-        v_status = t_0;
+-      }
+-      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_nie__error__truncated_input);
+-        goto exit;
++    if (self->private_impl.f_chunk_length != 4u) {
++      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++      goto exit;
++    }
++    self->private_impl.f_chunk_length = 0u;
++    self->private_impl.f_metadata_flavor = 5u;
++    self->private_impl.f_metadata_fourcc = 1195461953u;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      uint64_t t_0;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_0 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_decode_gama.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_decode_gama.scratch;
++          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
++          *scratch >>= 8;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
++          if (num_bits_0 == 24) {
++            t_0 = ((uint64_t)(*scratch >> 32));
++            break;
++          }
++          num_bits_0 += 8u;
++          *scratch |= ((uint64_t)(num_bits_0));
++        }
+       }
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++      self->private_impl.f_metadata_x = t_0;
+     }
++    self->private_impl.f_metadata_y = 0u;
++    self->private_impl.f_metadata_z = 0u;
+ 
++    goto ok;
+     ok:
+-    self->private_impl.p_decode_frame_config[0] = 0;
++    self->private_impl.p_decode_gama = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
++  self->private_impl.p_decode_gama = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+   goto exit;
+   exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
++
+   return status;
+ }
+ 
+-// -------- func nie.decoder.do_decode_frame_config
++// -------- func png.decoder.decode_iccp
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_nie__decoder__do_decode_frame_config(
+-    wuffs_nie__decoder* self,
+-    wuffs_base__frame_config* a_dst,
++wuffs_png__decoder__decode_iccp(
++    wuffs_png__decoder* self,
+     wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
++  uint8_t v_c8 = 0;
++
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -51351,62 +64529,63 @@ wuffs_nie__decoder__do_decode_frame_config(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_iccp;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if (self->private_impl.f_call_sequence == 32u) {
+-    } else if (self->private_impl.f_call_sequence < 32u) {
+-      if (a_src) {
+-        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++    while (true) {
++      if (self->private_impl.f_chunk_length <= 0u) {
++        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++        goto exit;
+       }
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      status = wuffs_nie__decoder__do_decode_image_config(self, NULL, a_src);
+-      if (a_src) {
+-        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      self->private_impl.f_chunk_length -= 1u;
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_0 = *iop_a_src++;
++        v_c8 = t_0;
+       }
+-      if (status.repr) {
+-        goto suspend;
++      if (v_c8 == 0u) {
++        break;
+       }
+-    } else if (self->private_impl.f_call_sequence == 40u) {
+-      if (16u != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
+-        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
+-        goto exit;
++    }
++    if (self->private_impl.f_chunk_length <= 0u) {
++      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++      goto exit;
++    }
++    self->private_impl.f_chunk_length -= 1u;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
+       }
+-    } else if (self->private_impl.f_call_sequence == 64u) {
+-      self->private_impl.f_call_sequence = 96u;
+-      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-      goto ok;
+-    } else {
+-      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-      goto ok;
++      uint8_t t_1 = *iop_a_src++;
++      v_c8 = t_1;
+     }
+-    if (a_dst != NULL) {
+-      wuffs_base__frame_config__set(
+-          a_dst,
+-          wuffs_base__utility__make_rect_ie_u32(
+-          0u,
+-          0u,
+-          self->private_impl.f_width,
+-          self->private_impl.f_height),
+-          ((wuffs_base__flicks)(0u)),
+-          0u,
+-          16u,
+-          0u,
+-          false,
+-          false,
+-          0u);
++    if (v_c8 != 0u) {
++      status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method);
++      goto exit;
+     }
+-    self->private_impl.f_call_sequence = 64u;
++    self->private_impl.f_metadata_is_zlib_compressed = true;
++    self->private_impl.f_metadata_flavor = 4u;
++    self->private_impl.f_metadata_fourcc = 1229144912u;
++    self->private_impl.f_metadata_x = 0u;
++    self->private_impl.f_metadata_y = 0u;
++    self->private_impl.f_metadata_z = 0u;
+ 
++    goto ok;
+     ok:
+-    self->private_impl.p_do_decode_frame_config[0] = 0;
++    self->private_impl.p_decode_iccp = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.p_decode_iccp = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+   goto exit;
+   exit:
+@@ -51417,182 +64596,119 @@ wuffs_nie__decoder__do_decode_frame_config(
+   return status;
+ }
+ 
+-// -------- func nie.decoder.decode_frame
++// -------- func png.decoder.decode_plte
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_nie__decoder__decode_frame(
+-    wuffs_nie__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-  if (!a_dst || !a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 3)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+-  }
+-  self->private_impl.active_coroutine = 0;
++static wuffs_base__status
++wuffs_png__decoder__decode_plte(
++    wuffs_png__decoder* self,
++    wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-
+-  uint32_t coro_susp_point = self->private_impl.p_decode_frame[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    while (true) {
+-      {
+-        wuffs_base__status t_0 = wuffs_nie__decoder__do_decode_frame(self,
+-            a_dst,
+-            a_src,
+-            a_blend,
+-            a_workbuf,
+-            a_opts);
+-        v_status = t_0;
+-      }
+-      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_nie__error__truncated_input);
+-        goto exit;
+-      }
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+-    }
++  uint32_t v_num_entries = 0;
++  uint32_t v_i = 0;
++  uint32_t v_argb = 0;
+ 
+-    ok:
+-    self->private_impl.p_decode_frame[0] = 0;
+-    goto exit;
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
+-
+-  goto exit;
+-  exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  uint32_t coro_susp_point = self->private_impl.p_decode_plte;
++  if (coro_susp_point) {
++    v_num_entries = self->private_data.s_decode_plte.v_num_entries;
++    v_i = self->private_data.s_decode_plte.v_i;
+   }
+-  return status;
+-}
+-
+-// -------- func nie.decoder.do_decode_frame
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_nie__decoder__do_decode_frame(
+-    wuffs_nie__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0];
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if (self->private_impl.f_call_sequence == 64u) {
+-    } else if (self->private_impl.f_call_sequence < 64u) {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      status = wuffs_nie__decoder__do_decode_frame_config(self, NULL, a_src);
+-      if (status.repr) {
+-        goto suspend;
+-      }
+-    } else {
+-      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-      goto ok;
+-    }
+-    self->private_impl.f_dst_x = 0u;
+-    self->private_impl.f_dst_y = 0u;
+-    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
+-        wuffs_base__pixel_buffer__pixel_format(a_dst),
+-        wuffs_base__pixel_buffer__palette(a_dst),
+-        wuffs_base__utility__make_pixel_format(self->private_impl.f_pixfmt),
+-        wuffs_base__utility__empty_slice_u8(),
+-        a_blend);
+-    if ( ! wuffs_base__status__is_ok(&v_status)) {
+-      status = v_status;
+-      if (wuffs_base__status__is_error(&status)) {
+-        goto exit;
+-      } else if (wuffs_base__status__is_suspension(&status)) {
+-        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
+-        goto exit;
+-      }
+-      goto ok;
++    if ((self->private_impl.f_chunk_length > 768u) || ((self->private_impl.f_chunk_length % 3u) != 0u)) {
++      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++      goto exit;
+     }
+-    while (true) {
+-      v_status = wuffs_nie__decoder__swizzle(self, a_dst, a_src);
+-      if (wuffs_base__status__is_ok(&v_status)) {
+-        break;
+-      } else if (v_status.repr != wuffs_nie__note__internal_note_short_read) {
+-        status = v_status;
+-        if (wuffs_base__status__is_error(&status)) {
+-          goto exit;
+-        } else if (wuffs_base__status__is_suspension(&status)) {
+-          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
+-          goto exit;
++    v_num_entries = (((uint32_t)(self->private_impl.f_chunk_length)) / 3u);
++    self->private_impl.f_chunk_length = 0u;
++    while (v_i < v_num_entries) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        uint32_t t_0;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
++          t_0 = ((uint32_t)(wuffs_base__peek_u24be__no_bounds_check(iop_a_src)));
++          iop_a_src += 3;
++        } else {
++          self->private_data.s_decode_plte.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_decode_plte.scratch;
++            uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
++            *scratch >>= 8;
++            *scratch <<= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
++            if (num_bits_0 == 16) {
++              t_0 = ((uint32_t)(*scratch >> 40));
++              break;
++            }
++            num_bits_0 += 8u;
++            *scratch |= ((uint64_t)(num_bits_0));
++          }
+         }
+-        goto ok;
++        v_argb = t_0;
+       }
+-      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
++      v_argb |= 4278190080u;
++      self->private_data.f_src_palette[((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u)));
++      self->private_data.f_src_palette[((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u)));
++      self->private_data.f_src_palette[((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u)));
++      self->private_data.f_src_palette[((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u)));
++      v_i += 1u;
++    }
++    while (v_i < 256u) {
++      self->private_data.f_src_palette[((4u * v_i) + 0u)] = 0u;
++      self->private_data.f_src_palette[((4u * v_i) + 1u)] = 0u;
++      self->private_data.f_src_palette[((4u * v_i) + 2u)] = 0u;
++      self->private_data.f_src_palette[((4u * v_i) + 3u)] = 255u;
++      v_i += 1u;
+     }
+-    self->private_impl.f_call_sequence = 96u;
+ 
++    goto ok;
+     ok:
+-    self->private_impl.p_do_decode_frame[0] = 0;
++    self->private_impl.p_decode_plte = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.p_decode_plte = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_plte.v_num_entries = v_num_entries;
++  self->private_data.s_decode_plte.v_i = v_i;
+ 
+   goto exit;
+   exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
+   return status;
+ }
+ 
+-// -------- func nie.decoder.swizzle
++// -------- func png.decoder.decode_srgb
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_nie__decoder__swizzle(
+-    wuffs_nie__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
++wuffs_png__decoder__decode_srgb(
++    wuffs_png__decoder* self,
+     wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  wuffs_base__pixel_format v_dst_pixfmt = {0};
+-  uint32_t v_dst_bits_per_pixel = 0;
+-  uint32_t v_dst_bytes_per_pixel = 0;
+-  uint64_t v_dst_bytes_per_row = 0;
+-  uint32_t v_src_bytes_per_pixel = 0;
+-  wuffs_base__table_u8 v_tab = {0};
+-  wuffs_base__slice_u8 v_dst = {0};
+-  uint64_t v_i = 0;
+-  uint64_t v_j = 0;
+-  uint64_t v_n = 0;
+-
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -51604,66 +64720,39 @@ wuffs_nie__decoder__swizzle(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
+-  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
+-  if ((v_dst_bits_per_pixel & 7u) != 0u) {
+-    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
+-    goto exit;
+-  }
+-  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
+-  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
+-  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
+-  while (true) {
+-    if (self->private_impl.f_dst_x == self->private_impl.f_width) {
+-      self->private_impl.f_dst_x = 0u;
+-      self->private_impl.f_dst_y += 1u;
+-      if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
+-        break;
+-      }
+-    }
+-    v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
+-    if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
+-      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
+-    }
+-    v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
+-    if (v_i >= ((uint64_t)(v_dst.len))) {
+-      v_src_bytes_per_pixel = 4u;
+-      if (self->private_impl.f_pixfmt == 2164308923u) {
+-        v_src_bytes_per_pixel = 8u;
+-      }
+-      v_n = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(v_src_bytes_per_pixel)));
+-      v_n = wuffs_base__u64__min(v_n, ((uint64_t)(((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x)))));
+-      v_j = v_n;
+-      while (v_j >= 8u) {
+-        if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 8u)))) {
+-          iop_a_src += (v_src_bytes_per_pixel * 8u);
+-        }
+-        v_j -= 8u;
+-      }
+-      while (v_j > 0u) {
+-        if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 1u)))) {
+-          iop_a_src += (v_src_bytes_per_pixel * 1u);
+-        }
+-        v_j -= 1u;
+-      }
+-    } else {
+-      v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
+-          &self->private_impl.f_swizzler,
+-          wuffs_base__slice_u8__subslice_i(v_dst, v_i),
+-          wuffs_base__pixel_buffer__palette(a_dst),
+-          &iop_a_src,
+-          io2_a_src);
++  uint32_t coro_susp_point = self->private_impl.p_decode_srgb;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_chunk_length != 1u) {
++      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++      goto exit;
+     }
+-    if (v_n == 0u) {
+-      status = wuffs_base__make_status(wuffs_nie__note__internal_note_short_read);
+-      goto ok;
++    self->private_impl.f_chunk_length = 0u;
++    self->private_impl.f_metadata_flavor = 5u;
++    self->private_impl.f_metadata_fourcc = 1397901122u;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint64_t t_0 = *iop_a_src++;
++      self->private_impl.f_metadata_x = t_0;
+     }
+-    wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
++    self->private_impl.f_metadata_y = 0u;
++    self->private_impl.f_metadata_z = 0u;
++
++    goto ok;
++    ok:
++    self->private_impl.p_decode_srgb = 0;
++    goto exit;
+   }
+-  status = wuffs_base__make_status(NULL);
+-  goto ok;
+ 
+-  ok:
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_srgb = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
+   goto exit;
+   exit:
+   if (a_src && a_src->data.ptr) {
+@@ -51673,131 +64762,199 @@ wuffs_nie__decoder__swizzle(
+   return status;
+ }
+ 
+-// -------- func nie.decoder.frame_dirty_rect
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
+-wuffs_nie__decoder__frame_dirty_rect(
+-    const wuffs_nie__decoder* self) {
+-  if (!self) {
+-    return wuffs_base__utility__empty_rect_ie_u32();
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_rect_ie_u32();
+-  }
+-
+-  return wuffs_base__utility__make_rect_ie_u32(
+-      0u,
+-      0u,
+-      self->private_impl.f_width,
+-      self->private_impl.f_height);
+-}
+-
+-// -------- func nie.decoder.num_animation_loops
++// -------- func png.decoder.decode_trns
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_nie__decoder__num_animation_loops(
+-    const wuffs_nie__decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
+-
+-  return 0u;
+-}
++static wuffs_base__status
++wuffs_png__decoder__decode_trns(
++    wuffs_png__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-// -------- func nie.decoder.num_decoded_frame_configs
++  uint32_t v_i = 0;
++  uint32_t v_n = 0;
++  uint64_t v_u = 0;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_nie__decoder__num_decoded_frame_configs(
+-    const wuffs_nie__decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  if (self->private_impl.f_call_sequence > 32u) {
+-    return 1u;
++  uint32_t coro_susp_point = self->private_impl.p_decode_trns;
++  if (coro_susp_point) {
++    v_i = self->private_data.s_decode_trns.v_i;
++    v_n = self->private_data.s_decode_trns.v_n;
+   }
+-  return 0u;
+-}
+-
+-// -------- func nie.decoder.num_decoded_frames
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_nie__decoder__num_decoded_frames(
+-    const wuffs_nie__decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
++    if (self->private_impl.f_color_type == 0u) {
++      self->private_impl.choosy_filter_and_swizzle = (
++          &wuffs_png__decoder__filter_and_swizzle_tricky);
++      if (self->private_impl.f_depth <= 8u) {
++        self->private_impl.f_dst_pixfmt = 2164295816u;
++        self->private_impl.f_src_pixfmt = 2164295816u;
++      } else {
++        self->private_impl.f_dst_pixfmt = 2164308923u;
++        self->private_impl.f_src_pixfmt = 2164308923u;
++      }
++      if (self->private_impl.f_chunk_length != 2u) {
++        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++        goto exit;
++      }
++      self->private_impl.f_chunk_length = 0u;
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        uint64_t t_0;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++          t_0 = ((uint64_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
++          iop_a_src += 2;
++        } else {
++          self->private_data.s_decode_trns.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_decode_trns.scratch;
++            uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
++            *scratch >>= 8;
++            *scratch <<= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
++            if (num_bits_0 == 8) {
++              t_0 = ((uint64_t)(*scratch >> 48));
++              break;
++            }
++            num_bits_0 += 8u;
++            *scratch |= ((uint64_t)(num_bits_0));
++          }
++        }
++        v_u = t_0;
++      }
++      if (self->private_impl.f_depth <= 1u) {
++        self->private_impl.f_remap_transparency = (((v_u & 1u) * 16777215u) | 4278190080u);
++      } else if (self->private_impl.f_depth <= 2u) {
++        self->private_impl.f_remap_transparency = (((v_u & 3u) * 5592405u) | 4278190080u);
++      } else if (self->private_impl.f_depth <= 4u) {
++        self->private_impl.f_remap_transparency = (((v_u & 15u) * 1118481u) | 4278190080u);
++      } else if (self->private_impl.f_depth <= 8u) {
++        self->private_impl.f_remap_transparency = (((v_u & 255u) * 65793u) | 4278190080u);
++      } else {
++        self->private_impl.f_remap_transparency = ((v_u * 4295032833u) | 18446462598732840960u);
++      }
++    } else if (self->private_impl.f_color_type == 2u) {
++      self->private_impl.choosy_filter_and_swizzle = (
++          &wuffs_png__decoder__filter_and_swizzle_tricky);
++      if (self->private_impl.f_depth <= 8u) {
++        self->private_impl.f_dst_pixfmt = 2164295816u;
++        self->private_impl.f_src_pixfmt = 2164295816u;
++      } else {
++        self->private_impl.f_dst_pixfmt = 2164308923u;
++        self->private_impl.f_src_pixfmt = 2164308923u;
++      }
++      if (self->private_impl.f_chunk_length != 6u) {
++        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++        goto exit;
++      }
++      self->private_impl.f_chunk_length = 0u;
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++        uint64_t t_1;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 6)) {
++          t_1 = ((uint64_t)(wuffs_base__peek_u48be__no_bounds_check(iop_a_src)));
++          iop_a_src += 6;
++        } else {
++          self->private_data.s_decode_trns.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_decode_trns.scratch;
++            uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
++            *scratch >>= 8;
++            *scratch <<= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
++            if (num_bits_1 == 40) {
++              t_1 = ((uint64_t)(*scratch >> 16));
++              break;
++            }
++            num_bits_1 += 8u;
++            *scratch |= ((uint64_t)(num_bits_1));
++          }
++        }
++        v_u = t_1;
++      }
++      if (self->private_impl.f_depth <= 8u) {
++        self->private_impl.f_remap_transparency = ((255u & (v_u >> 0u)) |
++            (65280u & (v_u >> 8u)) |
++            (16711680u & (v_u >> 16u)) |
++            4278190080u);
++      } else {
++        self->private_impl.f_remap_transparency = (v_u | 18446462598732840960u);
++      }
++    } else if (self->private_impl.f_color_type == 3u) {
++      self->private_impl.f_dst_pixfmt = 2164523016u;
++      self->private_impl.f_src_pixfmt = 2164523016u;
++      if (self->private_impl.f_chunk_length > 256u) {
++        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++        goto exit;
++      }
++      v_n = ((uint32_t)(self->private_impl.f_chunk_length));
++      self->private_impl.f_chunk_length = 0u;
++      while (v_i < v_n) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_2 = *iop_a_src++;
++          self->private_data.f_src_palette[((4u * v_i) + 3u)] = t_2;
++        }
++        v_i += 1u;
++      }
++    } else {
++      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++      goto exit;
++    }
+ 
+-  if (self->private_impl.f_call_sequence > 64u) {
+-    return 1u;
++    goto ok;
++    ok:
++    self->private_impl.p_decode_trns = 0;
++    goto exit;
+   }
+-  return 0u;
+-}
+-
+-// -------- func nie.decoder.restart_frame
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_nie__decoder__restart_frame(
+-    wuffs_nie__decoder* self,
+-    uint64_t a_index,
+-    uint64_t a_io_position) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_trns = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_trns.v_i = v_i;
++  self->private_data.s_decode_trns.v_n = v_n;
+ 
+-  if (self->private_impl.f_call_sequence < 32u) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
+-  }
+-  if ((a_index != 0u) || (a_io_position != 16u)) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+-  self->private_impl.f_call_sequence = 40u;
+-  return wuffs_base__make_status(NULL);
+-}
+ 
+-// -------- func nie.decoder.set_report_metadata
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_nie__decoder__set_report_metadata(
+-    wuffs_nie__decoder* self,
+-    uint32_t a_fourcc,
+-    bool a_report) {
+-  return wuffs_base__make_empty_struct();
++  return status;
+ }
+ 
+-// -------- func nie.decoder.tell_me_more
++// -------- func png.decoder.decode_frame_config
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_nie__decoder__tell_me_more(
+-    wuffs_nie__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__more_information* a_minfo,
++wuffs_png__decoder__decode_frame_config(
++    wuffs_png__decoder* self,
++    wuffs_base__frame_config* a_dst,
+     wuffs_base__io_buffer* a_src) {
+   if (!self) {
+     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+@@ -51808,354 +64965,485 @@ wuffs_nie__decoder__tell_me_more(
+         ? wuffs_base__error__disabled_by_previous_error
+         : wuffs_base__error__initialize_not_called);
+   }
+-  if (!a_dst || !a_src) {
++  if (!a_src) {
+     self->private_impl.magic = WUFFS_BASE__DISABLED;
+     return wuffs_base__make_status(wuffs_base__error__bad_argument);
+   }
+   if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 4)) {
++      (self->private_impl.active_coroutine != 2)) {
+     self->private_impl.magic = WUFFS_BASE__DISABLED;
+     return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+   }
+   self->private_impl.active_coroutine = 0;
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  status = wuffs_base__make_status(wuffs_base__error__no_more_information);
+-  goto exit;
+-
+-  goto ok;
+-  ok:
+-  goto exit;
+-  exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-  }
+-  return status;
+-}
+-
+-// -------- func nie.decoder.history_retain_length
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_nie__decoder__history_retain_length(
+-    const wuffs_nie__decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
+-
+-  return 0u;
+-}
+-
+-// -------- func nie.decoder.workbuf_len
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_nie__decoder__workbuf_len(
+-    const wuffs_nie__decoder* self) {
+-  if (!self) {
+-    return wuffs_base__utility__empty_range_ii_u64();
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_range_ii_u64();
+-  }
+-
+-  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
+-}
+-
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE)
+-
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ZLIB)
+-
+-// ---------------- Status Codes Implementations
+-
+-const char wuffs_zlib__note__dictionary_required[] = "@zlib: dictionary required";
+-const char wuffs_zlib__error__bad_checksum[] = "#zlib: bad checksum";
+-const char wuffs_zlib__error__bad_compression_method[] = "#zlib: bad compression method";
+-const char wuffs_zlib__error__bad_compression_window_size[] = "#zlib: bad compression window size";
+-const char wuffs_zlib__error__bad_parity_check[] = "#zlib: bad parity check";
+-const char wuffs_zlib__error__incorrect_dictionary[] = "#zlib: incorrect dictionary";
+-const char wuffs_zlib__error__truncated_input[] = "#zlib: truncated input";
+-
+-// ---------------- Private Consts
+-
+-#define WUFFS_ZLIB__QUIRKS_BASE 2113790976
+-
+-#define WUFFS_ZLIB__QUIRKS_COUNT 1
+-
+-// ---------------- Private Initializer Prototypes
+-
+-// ---------------- Private Function Prototypes
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_zlib__decoder__do_transform_io(
+-    wuffs_zlib__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__slice_u8 a_workbuf);
+-
+-// ---------------- VTables
+-
+-const wuffs_base__io_transformer__func_ptrs
+-wuffs_zlib__decoder__func_ptrs_for__wuffs_base__io_transformer = {
+-  (uint64_t(*)(const void*,
+-      uint32_t))(&wuffs_zlib__decoder__get_quirk),
+-  (uint64_t(*)(const void*))(&wuffs_zlib__decoder__history_retain_length),
+-  (wuffs_base__status(*)(void*,
+-      uint32_t,
+-      uint64_t))(&wuffs_zlib__decoder__set_quirk),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__slice_u8))(&wuffs_zlib__decoder__transform_io),
+-  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_zlib__decoder__workbuf_len),
+-};
+-
+-// ---------------- Initializer Implementations
+-
+-wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_zlib__decoder__initialize(
+-    wuffs_zlib__decoder* self,
+-    size_t sizeof_star_self,
+-    uint64_t wuffs_version,
+-    uint32_t options){
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (sizeof(*self) != sizeof_star_self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
+-  }
+-  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
+-      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
+-  }
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
+-    // The whole point of this if-check is to detect an uninitialized *self.
+-    // We disable the warning on GCC. Clang-5.0 does not have this warning.
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+-#endif
+-    if (self->private_impl.magic != 0) {
+-      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
+-    }
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-  } else {
+-    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
+-      memset(self, 0, sizeof(*self));
+-      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
+-    } else {
+-      memset(&(self->private_impl), 0, sizeof(self->private_impl));
+-    }
+-  }
++  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-  {
+-    wuffs_base__status z = wuffs_adler32__hasher__initialize(
+-        &self->private_data.f_checksum, sizeof(self->private_data.f_checksum), WUFFS_VERSION, options);
+-    if (z.repr) {
+-      return z;
+-    }
+-  }
+-  {
+-    wuffs_base__status z = wuffs_adler32__hasher__initialize(
+-        &self->private_data.f_dict_id_hasher, sizeof(self->private_data.f_dict_id_hasher), WUFFS_VERSION, options);
+-    if (z.repr) {
+-      return z;
+-    }
+-  }
+-  {
+-    wuffs_base__status z = wuffs_deflate__decoder__initialize(
+-        &self->private_data.f_flate, sizeof(self->private_data.f_flate), WUFFS_VERSION, options);
+-    if (z.repr) {
+-      return z;
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_png__decoder__do_decode_frame_config(self, a_dst, a_src);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_png__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+     }
+-  }
+-  self->private_impl.magic = WUFFS_BASE__MAGIC;
+-  self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
+-      wuffs_base__io_transformer__vtable_name;
+-  self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
+-      (const void*)(&wuffs_zlib__decoder__func_ptrs_for__wuffs_base__io_transformer);
+-  return wuffs_base__make_status(NULL);
+-}
+-
+-wuffs_zlib__decoder*
+-wuffs_zlib__decoder__alloc(void) {
+-  wuffs_zlib__decoder* x =
+-      (wuffs_zlib__decoder*)(calloc(sizeof(wuffs_zlib__decoder), 1));
+-  if (!x) {
+-    return NULL;
+-  }
+-  if (wuffs_zlib__decoder__initialize(
+-      x, sizeof(wuffs_zlib__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
+-    free(x);
+-    return NULL;
+-  }
+-  return x;
+-}
+-
+-size_t
+-sizeof__wuffs_zlib__decoder(void) {
+-  return sizeof(wuffs_zlib__decoder);
+-}
+-
+-// ---------------- Function Implementations
+-
+-// -------- func zlib.decoder.dictionary_id
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_zlib__decoder__dictionary_id(
+-    const wuffs_zlib__decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
+-
+-  return self->private_impl.f_dict_id_want;
+-}
+ 
+-// -------- func zlib.decoder.add_dictionary
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_zlib__decoder__add_dictionary(
+-    wuffs_zlib__decoder* self,
+-    wuffs_base__slice_u8 a_dict) {
+-  if (!self) {
+-    return wuffs_base__make_empty_struct();
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_empty_struct();
++    ok:
++    self->private_impl.p_decode_frame_config = 0;
++    goto exit;
+   }
+ 
+-  if (self->private_impl.f_header_complete) {
+-    self->private_impl.f_bad_call_sequence = true;
+-  } else {
+-    self->private_impl.f_dict_id_got = wuffs_adler32__hasher__update_u32(&self->private_data.f_dict_id_hasher, a_dict);
+-    wuffs_deflate__decoder__add_history(&self->private_data.f_flate, a_dict);
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
+   }
+-  self->private_impl.f_got_dictionary = true;
+-  return wuffs_base__make_empty_struct();
++  return status;
+ }
+ 
+-// -------- func zlib.decoder.get_quirk
++// -------- func png.decoder.do_decode_frame_config
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_zlib__decoder__get_quirk(
+-    const wuffs_zlib__decoder* self,
+-    uint32_t a_key) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
++static wuffs_base__status
++wuffs_png__decoder__do_decode_frame_config(
++    wuffs_png__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint32_t v_checksum_have = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t v_key = 0;
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-  if ((a_key == 1u) && self->private_impl.f_ignore_checksum) {
+-    return 1u;
+-  } else if (a_key >= 2113790976u) {
+-    v_key = (a_key - 2113790976u);
+-    if (v_key < 1u) {
+-      if (self->private_impl.f_quirks[v_key]) {
+-        return 1u;
++    if (((uint8_t)(self->private_impl.f_call_sequence & 16u)) != 0u) {
++      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++      goto exit;
++    } else if (self->private_impl.f_call_sequence == 32u) {
++    } else if (self->private_impl.f_call_sequence < 32u) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      status = wuffs_png__decoder__do_decode_image_config(self, NULL, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++    } else if (self->private_impl.f_call_sequence == 40u) {
++      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
++        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
++        goto exit;
++      }
++    } else if (self->private_impl.f_call_sequence == 64u) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++      status = wuffs_png__decoder__skip_frame(self, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++    } else {
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
++    }
++    if (self->private_impl.f_metadata_fourcc != 0u) {
++      self->private_impl.f_call_sequence = 48u;
++      status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
++      goto ok;
++    }
++    if (self->private_impl.f_num_decoded_frame_configs_value == 0u) {
++      self->private_impl.f_frame_rect_x0 = self->private_impl.f_first_rect_x0;
++      self->private_impl.f_frame_rect_y0 = self->private_impl.f_first_rect_y0;
++      self->private_impl.f_frame_rect_x1 = self->private_impl.f_first_rect_x1;
++      self->private_impl.f_frame_rect_y1 = self->private_impl.f_first_rect_y1;
++      self->private_impl.f_frame_config_io_position = self->private_impl.f_first_config_io_position;
++      self->private_impl.f_frame_duration = self->private_impl.f_first_duration;
++      self->private_impl.f_frame_disposal = self->private_impl.f_first_disposal;
++      self->private_impl.f_frame_overwrite_instead_of_blend = self->private_impl.f_first_overwrite_instead_of_blend;
++    } else {
++      while (true) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++          uint32_t t_0;
++          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++            t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++            iop_a_src += 4;
++          } else {
++            self->private_data.s_do_decode_frame_config.scratch = 0;
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++            while (true) {
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint64_t* scratch = &self->private_data.s_do_decode_frame_config.scratch;
++              uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
++              *scratch >>= 8;
++              *scratch <<= 8;
++              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
++              if (num_bits_0 == 24) {
++                t_0 = ((uint32_t)(*scratch >> 32));
++                break;
++              }
++              num_bits_0 += 8u;
++              *scratch |= ((uint64_t)(num_bits_0));
++            }
++          }
++          self->private_impl.f_chunk_length = t_0;
++        }
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++          uint32_t t_1;
++          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++            t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++            iop_a_src += 4;
++          } else {
++            self->private_data.s_do_decode_frame_config.scratch = 0;
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++            while (true) {
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint64_t* scratch = &self->private_data.s_do_decode_frame_config.scratch;
++              uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
++              *scratch <<= 8;
++              *scratch >>= 8;
++              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
++              if (num_bits_1 == 24) {
++                t_1 = ((uint32_t)(*scratch));
++                break;
++              }
++              num_bits_1 += 8u;
++              *scratch |= ((uint64_t)(num_bits_1)) << 56;
++            }
++          }
++          self->private_impl.f_chunk_type = t_1;
++        }
++        if (self->private_impl.f_chunk_type == 1145980233u) {
++          if (self->private_impl.f_chunk_length != 0u) {
++            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++            goto exit;
++          }
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++            uint32_t t_2;
++            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++              t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++              iop_a_src += 4;
++            } else {
++              self->private_data.s_do_decode_frame_config.scratch = 0;
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++              while (true) {
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint64_t* scratch = &self->private_data.s_do_decode_frame_config.scratch;
++                uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
++                *scratch <<= 8;
++                *scratch >>= 8;
++                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
++                if (num_bits_2 == 24) {
++                  t_2 = ((uint32_t)(*scratch));
++                  break;
++                }
++                num_bits_2 += 8u;
++                *scratch |= ((uint64_t)(num_bits_2)) << 56;
++              }
++            }
++            v_checksum_have = t_2;
++          }
++          if ( ! self->private_impl.f_ignore_checksum && (v_checksum_have != 2187346606u)) {
++            status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
++            goto exit;
++          }
++          self->private_impl.f_call_sequence = 96u;
++          status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++          goto ok;
++        } else if (self->private_impl.f_chunk_type == 1413571686u) {
++          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++          goto exit;
++        } else if (self->private_impl.f_chunk_type == 1280598886u) {
++          self->private_impl.f_frame_config_io_position = ((uint64_t)(wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))) - 8u));
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++          status = wuffs_png__decoder__decode_fctl(self, a_src);
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++          if (status.repr) {
++            goto suspend;
++          }
++          self->private_data.s_do_decode_frame_config.scratch = 4u;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
++          if (self->private_data.s_do_decode_frame_config.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++            self->private_data.s_do_decode_frame_config.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++            iop_a_src = io2_a_src;
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          iop_a_src += self->private_data.s_do_decode_frame_config.scratch;
++          break;
++        }
++        if (a_src) {
++          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++        }
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
++        status = wuffs_png__decoder__decode_other_chunk(self, a_src, true);
++        if (a_src) {
++          iop_a_src = a_src->data.ptr + a_src->meta.ri;
++        }
++        if (status.repr) {
++          goto suspend;
++        }
++        if (self->private_impl.f_metadata_fourcc != 0u) {
++          self->private_impl.f_call_sequence = 48u;
++          status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
++          goto ok;
++        }
++        self->private_data.s_do_decode_frame_config.scratch = 4u;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
++        if (self->private_data.s_do_decode_frame_config.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++          self->private_data.s_do_decode_frame_config.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++          iop_a_src = io2_a_src;
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        iop_a_src += self->private_data.s_do_decode_frame_config.scratch;
++        self->private_impl.f_chunk_length = 0u;
+       }
+     }
++    if (a_dst != NULL) {
++      wuffs_base__frame_config__set(
++          a_dst,
++          wuffs_base__utility__make_rect_ie_u32(
++          self->private_impl.f_frame_rect_x0,
++          self->private_impl.f_frame_rect_y0,
++          self->private_impl.f_frame_rect_x1,
++          self->private_impl.f_frame_rect_y1),
++          ((wuffs_base__flicks)(self->private_impl.f_frame_duration)),
++          ((uint64_t)(self->private_impl.f_num_decoded_frame_configs_value)),
++          self->private_impl.f_frame_config_io_position,
++          self->private_impl.f_frame_disposal,
++          ((self->private_impl.f_color_type <= 3u) &&  ! self->private_impl.f_seen_trns),
++          self->private_impl.f_frame_overwrite_instead_of_blend,
++          0u);
++    }
++    wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_num_decoded_frame_configs_value, 1u);
++    self->private_impl.f_call_sequence = 64u;
++
++    ok:
++    self->private_impl.p_do_decode_frame_config = 0;
++    goto exit;
+   }
+-  return 0u;
+-}
+ 
+-// -------- func zlib.decoder.set_quirk
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_zlib__decoder__set_quirk(
+-    wuffs_zlib__decoder* self,
+-    uint32_t a_key,
+-    uint64_t a_value) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+ 
+-  if (self->private_impl.f_header_complete) {
+-    self->private_impl.f_bad_call_sequence = true;
+-    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
+-  } else if (a_key == 1u) {
+-    self->private_impl.f_ignore_checksum = (a_value > 0u);
+-    return wuffs_base__make_status(NULL);
+-  } else if (a_key >= 2113790976u) {
+-    a_key -= 2113790976u;
+-    if (a_key < 1u) {
+-      self->private_impl.f_quirks[a_key] = (a_value > 0u);
+-      return wuffs_base__make_status(NULL);
+-    }
+-  }
+-  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++  return status;
+ }
+ 
+-// -------- func zlib.decoder.history_retain_length
++// -------- func png.decoder.skip_frame
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_zlib__decoder__history_retain_length(
+-    const wuffs_zlib__decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
++static wuffs_base__status
++wuffs_png__decoder__skip_frame(
++    wuffs_png__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint32_t v_seq_num = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  return 0u;
+-}
++  uint32_t coro_susp_point = self->private_impl.p_skip_frame;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-// -------- func zlib.decoder.workbuf_len
++    self->private_impl.f_chunk_type_array[0u] = 0u;
++    self->private_impl.f_chunk_type_array[1u] = 0u;
++    self->private_impl.f_chunk_type_array[2u] = 0u;
++    self->private_impl.f_chunk_type_array[3u] = 0u;
++    while (true) {
++      if (((uint64_t)(io2_a_src - iop_a_src)) < 8u) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++        continue;
++      }
++      self->private_impl.f_chunk_length = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++      self->private_impl.f_chunk_type = ((uint32_t)((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) >> 32u)));
++      if (self->private_impl.f_chunk_type == 1413563465u) {
++        if (self->private_impl.f_chunk_type_array[0u] == 102u) {
++          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++          goto exit;
++        }
++        self->private_impl.f_chunk_type_array[0u] = 73u;
++        self->private_impl.f_chunk_type_array[1u] = 68u;
++        self->private_impl.f_chunk_type_array[2u] = 65u;
++        self->private_impl.f_chunk_type_array[3u] = 84u;
++      } else if (self->private_impl.f_chunk_type == 1413571686u) {
++        if (self->private_impl.f_chunk_type_array[0u] == 73u) {
++          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++          goto exit;
++        }
++        self->private_impl.f_chunk_type_array[0u] = 102u;
++        self->private_impl.f_chunk_type_array[1u] = 100u;
++        self->private_impl.f_chunk_type_array[2u] = 65u;
++        self->private_impl.f_chunk_type_array[3u] = 84u;
++        if (self->private_impl.f_chunk_length < 4u) {
++          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++          goto exit;
++        }
++        self->private_impl.f_chunk_length -= 4u;
++        iop_a_src += 8u;
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++          uint32_t t_0;
++          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++            t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++            iop_a_src += 4;
++          } else {
++            self->private_data.s_skip_frame.scratch = 0;
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++            while (true) {
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint64_t* scratch = &self->private_data.s_skip_frame.scratch;
++              uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
++              *scratch >>= 8;
++              *scratch <<= 8;
++              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
++              if (num_bits_0 == 24) {
++                t_0 = ((uint32_t)(*scratch >> 32));
++                break;
++              }
++              num_bits_0 += 8u;
++              *scratch |= ((uint64_t)(num_bits_0));
++            }
++          }
++          v_seq_num = t_0;
++        }
++        if (v_seq_num != self->private_impl.f_next_animation_seq_num) {
++          status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number);
++          goto exit;
++        } else if (self->private_impl.f_next_animation_seq_num >= 4294967295u) {
++          status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
++          goto exit;
++        }
++        self->private_impl.f_next_animation_seq_num += 1u;
++        self->private_data.s_skip_frame.scratch = (((uint64_t)(self->private_impl.f_chunk_length)) + 4u);
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++        if (self->private_data.s_skip_frame.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++          self->private_data.s_skip_frame.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++          iop_a_src = io2_a_src;
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        iop_a_src += self->private_data.s_skip_frame.scratch;
++        self->private_impl.f_chunk_length = 0u;
++        continue;
++      } else if (self->private_impl.f_chunk_type_array[0u] != 0u) {
++        break;
++      } else if (self->private_impl.f_chunk_type == 1280598886u) {
++        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++        goto exit;
++      }
++      self->private_data.s_skip_frame.scratch = (((uint64_t)(self->private_impl.f_chunk_length)) + 12u);
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++      if (self->private_data.s_skip_frame.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++        self->private_data.s_skip_frame.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++        iop_a_src = io2_a_src;
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      iop_a_src += self->private_data.s_skip_frame.scratch;
++      self->private_impl.f_chunk_length = 0u;
++    }
++    wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
++    self->private_impl.f_call_sequence = 32u;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_zlib__decoder__workbuf_len(
+-    const wuffs_zlib__decoder* self) {
+-  if (!self) {
+-    return wuffs_base__utility__empty_range_ii_u64();
++    ok:
++    self->private_impl.p_skip_frame = 0;
++    goto exit;
+   }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_range_ii_u64();
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_skip_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+ 
+-  return wuffs_base__utility__make_range_ii_u64(1u, 1u);
++  return status;
+ }
+ 
+-// -------- func zlib.decoder.transform_io
++// -------- func png.decoder.decode_frame
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_zlib__decoder__transform_io(
+-    wuffs_zlib__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
++wuffs_png__decoder__decode_frame(
++    wuffs_png__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
+     wuffs_base__io_buffer* a_src,
+-    wuffs_base__slice_u8 a_workbuf) {
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts) {
+   if (!self) {
+     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+@@ -52170,7 +65458,7 @@ wuffs_zlib__decoder__transform_io(
+     return wuffs_base__make_status(wuffs_base__error__bad_argument);
+   }
+   if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 1)) {
++      (self->private_impl.active_coroutine != 3)) {
+     self->private_impl.magic = WUFFS_BASE__DISABLED;
+     return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+   }
+@@ -52179,71 +65467,312 @@ wuffs_zlib__decoder__transform_io(
+ 
+   wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_transform_io[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_frame;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_png__decoder__do_decode_frame(self,
++            a_dst,
++            a_src,
++            a_blend,
++            a_workbuf,
++            a_opts);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_png__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++
++    ok:
++    self->private_impl.p_decode_frame = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func png.decoder.do_decode_frame
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_png__decoder__do_decode_frame(
++    wuffs_png__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint32_t v_seq_num = 0;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++  uint32_t v_pass_width = 0;
++  uint32_t v_pass_height = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
++    if (((uint8_t)(self->private_impl.f_call_sequence & 16u)) != 0u) {
++      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++      goto exit;
++    } else if (self->private_impl.f_call_sequence >= 96u) {
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
++    } else if (self->private_impl.f_call_sequence != 64u) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      status = wuffs_png__decoder__do_decode_frame_config(self, NULL, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++    }
+     while (true) {
+-      {
+-        wuffs_base__status t_0 = wuffs_zlib__decoder__do_transform_io(self, a_dst, a_src, a_workbuf);
+-        v_status = t_0;
++      if (((uint64_t)(io2_a_src - iop_a_src)) < 8u) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
++        continue;
+       }
+-      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_zlib__error__truncated_input);
++      self->private_impl.f_chunk_length = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++      self->private_impl.f_chunk_type = ((uint32_t)((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) >> 32u)));
++      if (self->private_impl.f_chunk_type == 1413563465u) {
++        self->private_impl.f_chunk_type_array[0u] = 73u;
++        self->private_impl.f_chunk_type_array[1u] = 68u;
++        self->private_impl.f_chunk_type_array[2u] = 65u;
++        self->private_impl.f_chunk_type_array[3u] = 84u;
++        iop_a_src += 8u;
++        if ( ! self->private_impl.f_ignore_checksum) {
++          wuffs_private_impl__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
++              sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
++          wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4));
++        }
++        break;
++      } else if (self->private_impl.f_chunk_type == 1413571686u) {
++        self->private_impl.f_chunk_type_array[0u] = 102u;
++        self->private_impl.f_chunk_type_array[1u] = 100u;
++        self->private_impl.f_chunk_type_array[2u] = 65u;
++        self->private_impl.f_chunk_type_array[3u] = 84u;
++        if (self->private_impl.f_chunk_length < 4u) {
++          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++          goto exit;
++        }
++        self->private_impl.f_chunk_length -= 4u;
++        iop_a_src += 8u;
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++          uint32_t t_0;
++          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++            t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++            iop_a_src += 4;
++          } else {
++            self->private_data.s_do_decode_frame.scratch = 0;
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++            while (true) {
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint64_t* scratch = &self->private_data.s_do_decode_frame.scratch;
++              uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
++              *scratch >>= 8;
++              *scratch <<= 8;
++              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
++              if (num_bits_0 == 24) {
++                t_0 = ((uint32_t)(*scratch >> 32));
++                break;
++              }
++              num_bits_0 += 8u;
++              *scratch |= ((uint64_t)(num_bits_0));
++            }
++          }
++          v_seq_num = t_0;
++        }
++        if (v_seq_num != self->private_impl.f_next_animation_seq_num) {
++          status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number);
++          goto exit;
++        } else if (self->private_impl.f_next_animation_seq_num >= 4294967295u) {
++          status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
++          goto exit;
++        }
++        self->private_impl.f_next_animation_seq_num += 1u;
++        break;
++      } else if (self->private_impl.f_chunk_type == 1280598886u) {
++        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+         goto exit;
+       }
++      self->private_data.s_do_decode_frame.scratch = (((uint64_t)(self->private_impl.f_chunk_length)) + 12u);
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++      if (self->private_data.s_do_decode_frame.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++        self->private_data.s_do_decode_frame.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++        iop_a_src = io2_a_src;
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      iop_a_src += self->private_data.s_do_decode_frame.scratch;
++      self->private_impl.f_chunk_length = 0u;
++    }
++    if (self->private_impl.f_zlib_is_dirty) {
++      wuffs_private_impl__ignore_status(wuffs_zlib__decoder__initialize(&self->private_data.f_zlib,
++          sizeof (wuffs_zlib__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
++      if (self->private_impl.f_ignore_checksum) {
++        wuffs_zlib__decoder__set_quirk(&self->private_data.f_zlib, 1u, 1u);
++      }
++    }
++    self->private_impl.f_zlib_is_dirty = true;
++    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
++        wuffs_base__pixel_buffer__pixel_format(a_dst),
++        wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
++        wuffs_base__utility__make_pixel_format(self->private_impl.f_src_pixfmt),
++        wuffs_base__make_slice_u8(self->private_data.f_src_palette, 1024),
++        a_blend);
++    if ( ! wuffs_base__status__is_ok(&v_status)) {
+       status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++      if (wuffs_base__status__is_error(&status)) {
++        goto exit;
++      } else if (wuffs_base__status__is_suspension(&status)) {
++        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++        goto exit;
++      }
++      goto ok;
++    }
++    self->private_impl.f_workbuf_hist_pos_base = 0u;
++    while (true) {
++      if (self->private_impl.f_chunk_type_array[0u] == 73u) {
++        v_pass_width = (16777215u & ((((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][1u])) + self->private_impl.f_width) >> WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0u]));
++        v_pass_height = (16777215u & ((((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][4u])) + self->private_impl.f_height) >> WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][3u]));
++      } else {
++        v_pass_width = (16777215u & ((uint32_t)(self->private_impl.f_frame_rect_x1 - self->private_impl.f_frame_rect_x0)));
++        v_pass_height = (16777215u & ((uint32_t)(self->private_impl.f_frame_rect_y1 - self->private_impl.f_frame_rect_y0)));
++      }
++      if ((v_pass_width > 0u) && (v_pass_height > 0u)) {
++        self->private_impl.f_pass_bytes_per_row = wuffs_png__decoder__calculate_bytes_per_row(self, v_pass_width);
++        self->private_impl.f_pass_workbuf_length = (((uint64_t)(v_pass_height)) * (1u + self->private_impl.f_pass_bytes_per_row));
++        while (true) {
++          {
++            if (a_src) {
++              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++            }
++            wuffs_base__status t_1 = wuffs_png__decoder__decode_pass(self, a_src, a_workbuf);
++            v_status = t_1;
++            if (a_src) {
++              iop_a_src = a_src->data.ptr + a_src->meta.ri;
++            }
++          }
++          if (wuffs_base__status__is_ok(&v_status)) {
++            break;
++          } else if (wuffs_base__status__is_error(&v_status) || ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed))) {
++            if (self->private_impl.f_workbuf_wi <= ((uint64_t)(a_workbuf.len))) {
++              wuffs_png__decoder__filter_and_swizzle(self, a_dst, wuffs_base__slice_u8__subslice_j(a_workbuf, self->private_impl.f_workbuf_wi));
++            }
++            if (v_status.repr == wuffs_base__suspension__short_read) {
++              status = wuffs_base__make_status(wuffs_png__error__truncated_input);
++              goto exit;
++            }
++          }
++          status = v_status;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
++        }
++        v_status = wuffs_png__decoder__filter_and_swizzle(self, a_dst, a_workbuf);
++        if ( ! wuffs_base__status__is_ok(&v_status)) {
++          status = v_status;
++          if (wuffs_base__status__is_error(&status)) {
++            goto exit;
++          } else if (wuffs_base__status__is_suspension(&status)) {
++            status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++            goto exit;
++          }
++          goto ok;
++        }
++        self->private_impl.f_workbuf_hist_pos_base += self->private_impl.f_pass_workbuf_length;
++      }
++      if ((self->private_impl.f_interlace_pass == 0u) || (self->private_impl.f_interlace_pass >= 7u)) {
++        break;
++      }
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++      self->private_impl.f_interlace_pass += 1u;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
+     }
++    wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
++    self->private_impl.f_call_sequence = 32u;
+ 
+     ok:
+-    self->private_impl.p_transform_io[0] = 0;
++    self->private_impl.p_do_decode_frame = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
++  self->private_impl.p_do_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+   goto exit;
+   exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
++
+   return status;
+ }
+ 
+-// -------- func zlib.decoder.do_transform_io
++// -------- func png.decoder.decode_pass
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_zlib__decoder__do_transform_io(
+-    wuffs_zlib__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
++wuffs_png__decoder__decode_pass(
++    wuffs_png__decoder* self,
+     wuffs_base__io_buffer* a_src,
+     wuffs_base__slice_u8 a_workbuf) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint16_t v_x = 0;
+-  uint32_t v_checksum_got = 0;
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++  wuffs_base__io_buffer u_w = wuffs_base__empty_io_buffer();
++  wuffs_base__io_buffer* v_w = &u_w;
++  uint8_t* iop_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io0_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io1_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io2_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint64_t v_w_mark = 0;
++  uint64_t v_r_mark = 0;
++  wuffs_base__status v_zlib_status = wuffs_base__make_status(NULL);
++  uint32_t v_checksum_have = 0;
+   uint32_t v_checksum_want = 0;
+-  uint64_t v_mark = 0;
++  uint32_t v_seq_num = 0;
+ 
+-  uint8_t* iop_a_dst = NULL;
+-  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_dst && a_dst->data.ptr) {
+-    io0_a_dst = a_dst->data.ptr;
+-    io1_a_dst = io0_a_dst + a_dst->meta.wi;
+-    iop_a_dst = io1_a_dst;
+-    io2_a_dst = io0_a_dst + a_dst->data.len;
+-    if (a_dst->meta.closed) {
+-      io2_a_dst = iop_a_dst;
+-    }
+-  }
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -52255,77 +65784,93 @@ wuffs_zlib__decoder__do_transform_io(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_transform_io[0];
+-  if (coro_susp_point) {
+-    v_checksum_got = self->private_data.s_do_transform_io[0].v_checksum_got;
+-  }
++  uint32_t coro_susp_point = self->private_impl.p_decode_pass;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if (self->private_impl.f_bad_call_sequence) {
+-      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
+-      goto exit;
+-    } else if (self->private_impl.f_quirks[0u]) {
+-    } else if ( ! self->private_impl.f_want_dictionary) {
++    self->private_impl.f_workbuf_wi = 0u;
++    while (true) {
++      if ((self->private_impl.f_workbuf_wi > self->private_impl.f_pass_workbuf_length) || (self->private_impl.f_pass_workbuf_length > ((uint64_t)(a_workbuf.len)))) {
++        status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
++        goto exit;
++      }
+       {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-        uint16_t t_0;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-          t_0 = wuffs_base__peek_u16be__no_bounds_check(iop_a_src);
+-          iop_a_src += 2;
+-        } else {
+-          self->private_data.s_do_transform_io[0].scratch = 0;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
++        wuffs_base__io_buffer* o_0_v_w = v_w;
++        uint8_t* o_0_iop_v_w = iop_v_w;
++        uint8_t* o_0_io0_v_w = io0_v_w;
++        uint8_t* o_0_io1_v_w = io1_v_w;
++        uint8_t* o_0_io2_v_w = io2_v_w;
++        v_w = wuffs_private_impl__io_writer__set(
++            &u_w,
++            &iop_v_w,
++            &io0_v_w,
++            &io1_v_w,
++            &io2_v_w,
++            wuffs_base__slice_u8__subslice_ij(a_workbuf,
++            self->private_impl.f_workbuf_wi,
++            self->private_impl.f_pass_workbuf_length),
++            ((uint64_t)(self->private_impl.f_workbuf_hist_pos_base + self->private_impl.f_workbuf_wi)));
++        {
++          const bool o_1_closed_a_src = a_src->meta.closed;
++          const uint8_t* o_1_io2_a_src = io2_a_src;
++          wuffs_private_impl__io_reader__limit(&io2_a_src, iop_a_src,
++              ((uint64_t)(self->private_impl.f_chunk_length)));
++          if (a_src) {
++            size_t n = ((size_t)(io2_a_src - a_src->data.ptr));
++            a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n);
++            a_src->meta.wi = n;
++          }
++          v_w_mark = ((uint64_t)(iop_v_w - io0_v_w));
++          v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
++          {
++            u_w.meta.wi = ((size_t)(iop_v_w - u_w.data.ptr));
++            if (a_src) {
++              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+             }
+-            uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch;
+-            uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
+-            *scratch >>= 8;
+-            *scratch <<= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
+-            if (num_bits_0 == 8) {
+-              t_0 = ((uint16_t)(*scratch >> 48));
+-              break;
++            wuffs_base__status t_0 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, v_w, a_src, wuffs_base__utility__empty_slice_u8());
++            v_zlib_status = t_0;
++            iop_v_w = u_w.data.ptr + u_w.meta.wi;
++            if (a_src) {
++              iop_a_src = a_src->data.ptr + a_src->meta.ri;
+             }
+-            num_bits_0 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_0));
++          }
++          if ( ! self->private_impl.f_ignore_checksum) {
++            wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_private_impl__io__since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
++          }
++          wuffs_private_impl__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)(wuffs_private_impl__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))))));
++          wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_workbuf_wi, wuffs_private_impl__io__count_since(v_w_mark, ((uint64_t)(iop_v_w - io0_v_w))));
++          io2_a_src = o_1_io2_a_src;
++          if (a_src) {
++            a_src->meta.closed = o_1_closed_a_src;
++            a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
+           }
+         }
+-        v_x = t_0;
+-      }
+-      if (((v_x >> 8u) & 15u) != 8u) {
+-        status = wuffs_base__make_status(wuffs_zlib__error__bad_compression_method);
+-        goto exit;
+-      }
+-      if ((v_x >> 12u) > 7u) {
+-        status = wuffs_base__make_status(wuffs_zlib__error__bad_compression_window_size);
+-        goto exit;
+-      }
+-      if ((v_x % 31u) != 0u) {
+-        status = wuffs_base__make_status(wuffs_zlib__error__bad_parity_check);
+-        goto exit;
++        v_w = o_0_v_w;
++        iop_v_w = o_0_iop_v_w;
++        io0_v_w = o_0_io0_v_w;
++        io1_v_w = o_0_io1_v_w;
++        io2_v_w = o_0_io2_v_w;
+       }
+-      self->private_impl.f_want_dictionary = ((v_x & 32u) != 0u);
+-      if (self->private_impl.f_want_dictionary) {
+-        self->private_impl.f_dict_id_got = 1u;
++      if (wuffs_base__status__is_ok(&v_zlib_status)) {
++        if (self->private_impl.f_chunk_length > 0u) {
++          status = wuffs_base__make_status(wuffs_base__error__too_much_data);
++          goto exit;
++        }
+         {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+           uint32_t t_1;
+           if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+             t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+             iop_a_src += 4;
+           } else {
+-            self->private_data.s_do_transform_io[0].scratch = 0;
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++            self->private_data.s_decode_pass.scratch = 0;
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+             while (true) {
+               if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+                 status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+                 goto suspend;
+               }
+-              uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch;
++              uint64_t* scratch = &self->private_data.s_decode_pass.scratch;
+               uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
+               *scratch >>= 8;
+               *scratch <<= 8;
+@@ -52338,101 +65883,208 @@ wuffs_zlib__decoder__do_transform_io(
+               *scratch |= ((uint64_t)(num_bits_1));
+             }
+           }
+-          self->private_impl.f_dict_id_want = t_1;
++          v_checksum_want = t_1;
+         }
+-        status = wuffs_base__make_status(wuffs_zlib__note__dictionary_required);
+-        goto ok;
+-      } else if (self->private_impl.f_got_dictionary) {
+-        status = wuffs_base__make_status(wuffs_zlib__error__incorrect_dictionary);
+-        goto exit;
+-      }
+-    } else if (self->private_impl.f_dict_id_got != self->private_impl.f_dict_id_want) {
+-      if (self->private_impl.f_got_dictionary) {
+-        status = wuffs_base__make_status(wuffs_zlib__error__incorrect_dictionary);
++        if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_chunk_type_array[0u] == 73u)) {
++          v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__utility__empty_slice_u8());
++          if (v_checksum_have != v_checksum_want) {
++            status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
++            goto exit;
++          }
++        }
++        break;
++      } else if (v_zlib_status.repr == wuffs_base__suspension__short_write) {
++        if ((1u <= self->private_impl.f_interlace_pass) && (self->private_impl.f_interlace_pass <= 6u)) {
++          break;
++        }
++        status = wuffs_base__make_status(wuffs_base__error__too_much_data);
+         goto exit;
+-      }
+-      status = wuffs_base__make_status(wuffs_zlib__note__dictionary_required);
+-      goto ok;
+-    }
+-    self->private_impl.f_header_complete = true;
+-    while (true) {
+-      v_mark = ((uint64_t)(iop_a_dst - io0_a_dst));
+-      {
+-        if (a_dst) {
+-          a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++      } else if (v_zlib_status.repr != wuffs_base__suspension__short_read) {
++        status = v_zlib_status;
++        if (wuffs_base__status__is_error(&status)) {
++          goto exit;
++        } else if (wuffs_base__status__is_suspension(&status)) {
++          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++          goto exit;
+         }
+-        if (a_src) {
+-          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++        goto ok;
++      } else if (self->private_impl.f_chunk_length == 0u) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++          uint32_t t_2;
++          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++            t_2 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++            iop_a_src += 4;
++          } else {
++            self->private_data.s_decode_pass.scratch = 0;
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++            while (true) {
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint64_t* scratch = &self->private_data.s_decode_pass.scratch;
++              uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu));
++              *scratch >>= 8;
++              *scratch <<= 8;
++              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
++              if (num_bits_2 == 24) {
++                t_2 = ((uint32_t)(*scratch >> 32));
++                break;
++              }
++              num_bits_2 += 8u;
++              *scratch |= ((uint64_t)(num_bits_2));
++            }
++          }
++          v_checksum_want = t_2;
+         }
+-        wuffs_base__status t_2 = wuffs_deflate__decoder__transform_io(&self->private_data.f_flate, a_dst, a_src, a_workbuf);
+-        v_status = t_2;
+-        if (a_dst) {
+-          iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
++        if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_chunk_type_array[0u] == 73u)) {
++          v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__utility__empty_slice_u8());
++          if (v_checksum_have != v_checksum_want) {
++            status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
++            goto exit;
++          }
+         }
+-        if (a_src) {
+-          iop_a_src = a_src->data.ptr + a_src->meta.ri;
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++          uint32_t t_3;
++          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++            t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++            iop_a_src += 4;
++          } else {
++            self->private_data.s_decode_pass.scratch = 0;
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++            while (true) {
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint64_t* scratch = &self->private_data.s_decode_pass.scratch;
++              uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu));
++              *scratch >>= 8;
++              *scratch <<= 8;
++              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
++              if (num_bits_3 == 24) {
++                t_3 = ((uint32_t)(*scratch >> 32));
++                break;
++              }
++              num_bits_3 += 8u;
++              *scratch |= ((uint64_t)(num_bits_3));
++            }
++          }
++          self->private_impl.f_chunk_length = t_3;
+         }
+-      }
+-      if ( ! self->private_impl.f_ignore_checksum &&  ! self->private_impl.f_quirks[0u]) {
+-        v_checksum_got = wuffs_adler32__hasher__update_u32(&self->private_data.f_checksum, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
+-      }
+-      if (wuffs_base__status__is_ok(&v_status)) {
+-        break;
+-      }
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
+-    }
+-    if ( ! self->private_impl.f_quirks[0u]) {
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-        uint32_t t_3;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-          t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-          iop_a_src += 4;
+-        } else {
+-          self->private_data.s_do_transform_io[0].scratch = 0;
++        {
+           WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
++          uint32_t t_4;
++          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++            t_4 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++            iop_a_src += 4;
++          } else {
++            self->private_data.s_decode_pass.scratch = 0;
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++            while (true) {
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint64_t* scratch = &self->private_data.s_decode_pass.scratch;
++              uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
++              *scratch <<= 8;
++              *scratch >>= 8;
++              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
++              if (num_bits_4 == 24) {
++                t_4 = ((uint32_t)(*scratch));
++                break;
++              }
++              num_bits_4 += 8u;
++              *scratch |= ((uint64_t)(num_bits_4)) << 56;
+             }
+-            uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch;
+-            uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu));
+-            *scratch >>= 8;
+-            *scratch <<= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
+-            if (num_bits_3 == 24) {
+-              t_3 = ((uint32_t)(*scratch >> 32));
+-              break;
++          }
++          self->private_impl.f_chunk_type = t_4;
++        }
++        if (self->private_impl.f_chunk_type_array[0u] == 73u) {
++          if (self->private_impl.f_chunk_type != 1413563465u) {
++            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++            goto exit;
++          }
++          if ( ! self->private_impl.f_ignore_checksum) {
++            wuffs_private_impl__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
++                sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
++            wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4));
++          }
++        } else {
++          if ((self->private_impl.f_chunk_type != 1413571686u) || (self->private_impl.f_chunk_length < 4u)) {
++            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++            goto exit;
++          }
++          self->private_impl.f_chunk_length -= 4u;
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++            uint32_t t_5;
++            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++              t_5 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++              iop_a_src += 4;
++            } else {
++              self->private_data.s_decode_pass.scratch = 0;
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
++              while (true) {
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint64_t* scratch = &self->private_data.s_decode_pass.scratch;
++                uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFFu));
++                *scratch >>= 8;
++                *scratch <<= 8;
++                *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5);
++                if (num_bits_5 == 24) {
++                  t_5 = ((uint32_t)(*scratch >> 32));
++                  break;
++                }
++                num_bits_5 += 8u;
++                *scratch |= ((uint64_t)(num_bits_5));
++              }
+             }
+-            num_bits_3 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_3));
++            v_seq_num = t_5;
++          }
++          if (v_seq_num != self->private_impl.f_next_animation_seq_num) {
++            status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number);
++            goto exit;
++          } else if (self->private_impl.f_next_animation_seq_num >= 4294967295u) {
++            status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
++            goto exit;
+           }
++          self->private_impl.f_next_animation_seq_num += 1u;
+         }
+-        v_checksum_want = t_3;
+-      }
+-      if ( ! self->private_impl.f_ignore_checksum && (v_checksum_got != v_checksum_want)) {
+-        status = wuffs_base__make_status(wuffs_zlib__error__bad_checksum);
++        continue;
++      } else if (((uint64_t)(io2_a_src - iop_a_src)) > 0u) {
++        status = wuffs_base__make_status(wuffs_png__error__internal_error_zlib_decoder_did_not_exhaust_its_input);
+         goto exit;
+       }
++      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11);
++    }
++    if (self->private_impl.f_workbuf_wi != self->private_impl.f_pass_workbuf_length) {
++      status = wuffs_base__make_status(wuffs_base__error__not_enough_data);
++      goto exit;
++    } else if (0u < ((uint64_t)(a_workbuf.len))) {
++      if (a_workbuf.ptr[0u] == 4u) {
++        a_workbuf.ptr[0u] = 1u;
++      }
+     }
+ 
+     ok:
+-    self->private_impl.p_do_transform_io[0] = 0;
++    self->private_impl.p_decode_pass = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_do_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_do_transform_io[0].v_checksum_got = v_checksum_got;
++  self->private_impl.p_decode_pass = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+   goto exit;
+   exit:
+-  if (a_dst && a_dst->data.ptr) {
+-    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-  }
+   if (a_src && a_src->data.ptr) {
+     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+@@ -52440,2021 +66092,1710 @@ wuffs_zlib__decoder__do_transform_io(
+   return status;
+ }
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ZLIB)
+-
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG)
+-
+-// ---------------- Status Codes Implementations
+-
+-const char wuffs_png__error__bad_animation_sequence_number[] = "#png: bad animation sequence number";
+-const char wuffs_png__error__bad_checksum[] = "#png: bad checksum";
+-const char wuffs_png__error__bad_chunk[] = "#png: bad chunk";
+-const char wuffs_png__error__bad_filter[] = "#png: bad filter";
+-const char wuffs_png__error__bad_header[] = "#png: bad header";
+-const char wuffs_png__error__bad_text_chunk_not_latin_1[] = "#png: bad text chunk (not Latin-1)";
+-const char wuffs_png__error__missing_palette[] = "#png: missing palette";
+-const char wuffs_png__error__truncated_input[] = "#png: truncated input";
+-const char wuffs_png__error__unsupported_cgbi_extension[] = "#png: unsupported CgBI extension";
+-const char wuffs_png__error__unsupported_png_compression_method[] = "#png: unsupported PNG compression method";
+-const char wuffs_png__error__unsupported_png_file[] = "#png: unsupported PNG file";
+-const char wuffs_png__error__internal_error_inconsistent_i_o[] = "#png: internal error: inconsistent I/O";
+-const char wuffs_png__error__internal_error_inconsistent_chunk_type[] = "#png: internal error: inconsistent chunk type";
+-const char wuffs_png__error__internal_error_inconsistent_frame_bounds[] = "#png: internal error: inconsistent frame bounds";
+-const char wuffs_png__error__internal_error_inconsistent_workbuf_length[] = "#png: internal error: inconsistent workbuf length";
+-const char wuffs_png__error__internal_error_zlib_decoder_did_not_exhaust_its_input[] = "#png: internal error: zlib decoder did not exhaust its input";
+-
+-// ---------------- Private Consts
+-
+-#define WUFFS_PNG__ANCILLARY_BIT 32
+-
+-static const uint8_t
+-WUFFS_PNG__INTERLACING[8][6] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  {
+-    0, 0, 0, 0, 0, 0,
+-  }, {
+-    3, 7, 0, 3, 7, 0,
+-  }, {
+-    3, 3, 4, 3, 7, 0,
+-  }, {
+-    2, 3, 0, 3, 3, 4,
+-  }, {
+-    2, 1, 2, 2, 3, 0,
+-  }, {
+-    1, 1, 0, 2, 1, 2,
+-  }, {
+-    1, 0, 1, 1, 1, 0,
+-  }, {
+-    0, 0, 0, 1, 0, 1,
+-  },
+-};
+-
+-static const uint8_t
+-WUFFS_PNG__LOW_BIT_DEPTH_MULTIPLIERS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  0, 255, 85, 0, 17, 0, 0, 0,
+-};
+-
+-static const uint8_t
+-WUFFS_PNG__LOW_BIT_DEPTH_NUM_PACKS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  0, 8, 4, 0, 2, 0, 0, 0,
+-};
+-
+-static const uint8_t
+-WUFFS_PNG__NUM_CHANNELS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  1, 0, 3, 1, 2, 0, 4, 0,
+-};
+-
+-static const uint16_t
+-WUFFS_PNG__LATIN_1[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  32, 33, 34, 35, 36, 37, 38, 39,
+-  40, 41, 42, 43, 44, 45, 46, 47,
+-  48, 49, 50, 51, 52, 53, 54, 55,
+-  56, 57, 58, 59, 60, 61, 62, 63,
+-  64, 65, 66, 67, 68, 69, 70, 71,
+-  72, 73, 74, 75, 76, 77, 78, 79,
+-  80, 81, 82, 83, 84, 85, 86, 87,
+-  88, 89, 90, 91, 92, 93, 94, 95,
+-  96, 97, 98, 99, 100, 101, 102, 103,
+-  104, 105, 106, 107, 108, 109, 110, 111,
+-  112, 113, 114, 115, 116, 117, 118, 119,
+-  120, 121, 122, 123, 124, 125, 126, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 0, 0, 0, 0, 0, 0, 0,
+-  0, 41410, 41666, 41922, 42178, 42434, 42690, 42946,
+-  43202, 43458, 43714, 43970, 44226, 44482, 44738, 44994,
+-  45250, 45506, 45762, 46018, 46274, 46530, 46786, 47042,
+-  47298, 47554, 47810, 48066, 48322, 48578, 48834, 49090,
+-  32963, 33219, 33475, 33731, 33987, 34243, 34499, 34755,
+-  35011, 35267, 35523, 35779, 36035, 36291, 36547, 36803,
+-  37059, 37315, 37571, 37827, 38083, 38339, 38595, 38851,
+-  39107, 39363, 39619, 39875, 40131, 40387, 40643, 40899,
+-  41155, 41411, 41667, 41923, 42179, 42435, 42691, 42947,
+-  43203, 43459, 43715, 43971, 44227, 44483, 44739, 44995,
+-  45251, 45507, 45763, 46019, 46275, 46531, 46787, 47043,
+-  47299, 47555, 47811, 48067, 48323, 48579, 48835, 49091,
+-};
+-
+-// ---------------- Private Initializer Prototypes
+-
+-// ---------------- Private Function Prototypes
+-
+-#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_1_distance_4_arm_neon(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr);
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-
+-#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_3_distance_4_arm_neon(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev);
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-
+-#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_4_distance_3_arm_neon(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev);
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-
+-#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_4_distance_4_arm_neon(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev);
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_1(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_1__choosy_default(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_1_distance_3_fallback(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_1_distance_4_fallback(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_2(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_3(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_3__choosy_default(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_3_distance_3_fallback(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_3_distance_4_fallback(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_4(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_4__choosy_default(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_4_distance_3_fallback(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_4_distance_4_fallback(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev);
+-
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_1_distance_4_x86_sse42(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr);
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_3_distance_4_x86_sse42(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev);
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_4_distance_3_x86_sse42(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev);
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_4_distance_4_x86_sse42(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev);
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__do_decode_image_config(
+-    wuffs_png__decoder* self,
+-    wuffs_base__image_config* a_dst,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__decode_ihdr(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__assign_filter_distance(
+-    wuffs_png__decoder* self);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static uint64_t
+-wuffs_png__decoder__calculate_bytes_per_row(
+-    const wuffs_png__decoder* self,
+-    uint32_t a_width);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__choose_filter_implementations(
+-    wuffs_png__decoder* self);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__decode_other_chunk(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src,
+-    bool a_framy);
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__decode_actl(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src);
++// -------- func png.decoder.frame_dirty_rect
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__decode_chrm(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src);
++WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
++wuffs_png__decoder__frame_dirty_rect(
++    const wuffs_png__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_rect_ie_u32();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_rect_ie_u32();
++  }
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__decode_exif(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src);
++  return wuffs_base__utility__make_rect_ie_u32(
++      self->private_impl.f_frame_rect_x0,
++      self->private_impl.f_frame_rect_y0,
++      self->private_impl.f_frame_rect_x1,
++      self->private_impl.f_frame_rect_y1);
++}
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__decode_fctl(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src);
++// -------- func png.decoder.num_animation_loops
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__decode_gama(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src);
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_png__decoder__num_animation_loops(
++    const wuffs_png__decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__decode_iccp(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src);
++  return self->private_impl.f_num_animation_loops_value;
++}
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__decode_plte(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src);
++// -------- func png.decoder.num_decoded_frame_configs
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__decode_srgb(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src);
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_png__decoder__num_decoded_frame_configs(
++    const wuffs_png__decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__decode_trns(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src);
++  return ((uint64_t)(self->private_impl.f_num_decoded_frame_configs_value));
++}
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__do_decode_frame_config(
+-    wuffs_png__decoder* self,
+-    wuffs_base__frame_config* a_dst,
+-    wuffs_base__io_buffer* a_src);
++// -------- func png.decoder.num_decoded_frames
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__skip_frame(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src);
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_png__decoder__num_decoded_frames(
++    const wuffs_png__decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__do_decode_frame(
+-    wuffs_png__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts);
++  return ((uint64_t)(self->private_impl.f_num_decoded_frames_value));
++}
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__decode_pass(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__slice_u8 a_workbuf);
++// -------- func png.decoder.restart_frame
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__do_tell_me_more(
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_png__decoder__restart_frame(
+     wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__more_information* a_minfo,
+-    wuffs_base__io_buffer* a_src);
++    uint64_t a_index,
++    uint64_t a_io_position) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__filter_and_swizzle(
+-    wuffs_png__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__slice_u8 a_workbuf);
++  if (self->private_impl.f_call_sequence < 32u) {
++    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++  } else if ((a_index >= ((uint64_t)(self->private_impl.f_num_animation_frames_value))) || ((a_index == 0u) && (a_io_position != self->private_impl.f_first_config_io_position))) {
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  self->private_impl.f_call_sequence = 40u;
++  if (self->private_impl.f_interlace_pass >= 1u) {
++    self->private_impl.f_interlace_pass = 1u;
++  }
++  self->private_impl.f_frame_config_io_position = a_io_position;
++  self->private_impl.f_num_decoded_frame_configs_value = ((uint32_t)(a_index));
++  self->private_impl.f_num_decoded_frames_value = self->private_impl.f_num_decoded_frame_configs_value;
++  return wuffs_base__make_status(NULL);
++}
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__filter_and_swizzle__choosy_default(
+-    wuffs_png__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__slice_u8 a_workbuf);
++// -------- func png.decoder.set_report_metadata
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__filter_and_swizzle_tricky(
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_png__decoder__set_report_metadata(
+     wuffs_png__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__slice_u8 a_workbuf);
+-
+-// ---------------- VTables
++    uint32_t a_fourcc,
++    bool a_report) {
++  if (!self) {
++    return wuffs_base__make_empty_struct();
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_empty_struct();
++  }
+ 
+-const wuffs_base__image_decoder__func_ptrs
+-wuffs_png__decoder__func_ptrs_for__wuffs_base__image_decoder = {
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__pixel_buffer*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__pixel_blend,
+-      wuffs_base__slice_u8,
+-      wuffs_base__decode_frame_options*))(&wuffs_png__decoder__decode_frame),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__frame_config*,
+-      wuffs_base__io_buffer*))(&wuffs_png__decoder__decode_frame_config),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__image_config*,
+-      wuffs_base__io_buffer*))(&wuffs_png__decoder__decode_image_config),
+-  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_png__decoder__frame_dirty_rect),
+-  (uint64_t(*)(const void*,
+-      uint32_t))(&wuffs_png__decoder__get_quirk),
+-  (uint64_t(*)(const void*))(&wuffs_png__decoder__history_retain_length),
+-  (uint32_t(*)(const void*))(&wuffs_png__decoder__num_animation_loops),
+-  (uint64_t(*)(const void*))(&wuffs_png__decoder__num_decoded_frame_configs),
+-  (uint64_t(*)(const void*))(&wuffs_png__decoder__num_decoded_frames),
+-  (wuffs_base__status(*)(void*,
+-      uint64_t,
+-      uint64_t))(&wuffs_png__decoder__restart_frame),
+-  (wuffs_base__status(*)(void*,
+-      uint32_t,
+-      uint64_t))(&wuffs_png__decoder__set_quirk),
+-  (wuffs_base__empty_struct(*)(void*,
+-      uint32_t,
+-      bool))(&wuffs_png__decoder__set_report_metadata),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__more_information*,
+-      wuffs_base__io_buffer*))(&wuffs_png__decoder__tell_me_more),
+-  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_png__decoder__workbuf_len),
+-};
++  if (a_fourcc == 1128813133u) {
++    self->private_impl.f_report_metadata_chrm = a_report;
++  } else if (a_fourcc == 1163413830u) {
++    self->private_impl.f_report_metadata_exif = a_report;
++  } else if (a_fourcc == 1195461953u) {
++    self->private_impl.f_report_metadata_gama = a_report;
++  } else if (a_fourcc == 1229144912u) {
++    self->private_impl.f_report_metadata_iccp = a_report;
++  } else if (a_fourcc == 1263947808u) {
++    self->private_impl.f_report_metadata_kvp = a_report;
++  } else if (a_fourcc == 1397901122u) {
++    self->private_impl.f_report_metadata_srgb = a_report;
++  }
++  return wuffs_base__make_empty_struct();
++}
+ 
+-// ---------------- Initializer Implementations
++// -------- func png.decoder.tell_me_more
+ 
+-wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_png__decoder__initialize(
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_png__decoder__tell_me_more(
+     wuffs_png__decoder* self,
+-    size_t sizeof_star_self,
+-    uint64_t wuffs_version,
+-    uint32_t options){
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__more_information* a_minfo,
++    wuffs_base__io_buffer* a_src) {
+   if (!self) {
+     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+-  if (sizeof(*self) != sizeof_star_self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
+   }
+-  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
+-      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++  if (!a_dst || !a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+   }
+-
+-  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
+-    // The whole point of this if-check is to detect an uninitialized *self.
+-    // We disable the warning on GCC. Clang-5.0 does not have this warning.
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+-#endif
+-    if (self->private_impl.magic != 0) {
+-      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
+-    }
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-  } else {
+-    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
+-      memset(self, 0, sizeof(*self));
+-      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
+-    } else {
+-      memset(&(self->private_impl), 0, sizeof(self->private_impl));
+-    }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 4)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+   }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  self->private_impl.choosy_filter_1 = &wuffs_png__decoder__filter_1__choosy_default;
+-  self->private_impl.choosy_filter_3 = &wuffs_png__decoder__filter_3__choosy_default;
+-  self->private_impl.choosy_filter_4 = &wuffs_png__decoder__filter_4__choosy_default;
+-  self->private_impl.choosy_filter_and_swizzle = &wuffs_png__decoder__filter_and_swizzle__choosy_default;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-  {
+-    wuffs_base__status z = wuffs_crc32__ieee_hasher__initialize(
+-        &self->private_data.f_crc32, sizeof(self->private_data.f_crc32), WUFFS_VERSION, options);
+-    if (z.repr) {
+-      return z;
+-    }
+-  }
+-  {
+-    wuffs_base__status z = wuffs_zlib__decoder__initialize(
+-        &self->private_data.f_zlib, sizeof(self->private_data.f_zlib), WUFFS_VERSION, options);
+-    if (z.repr) {
+-      return z;
++  uint32_t coro_susp_point = self->private_impl.p_tell_me_more;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_png__decoder__do_tell_me_more(self, a_dst, a_minfo, a_src);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_png__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+     }
+-  }
+-  self->private_impl.magic = WUFFS_BASE__MAGIC;
+-  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
+-      wuffs_base__image_decoder__vtable_name;
+-  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
+-      (const void*)(&wuffs_png__decoder__func_ptrs_for__wuffs_base__image_decoder);
+-  return wuffs_base__make_status(NULL);
+-}
+ 
+-wuffs_png__decoder*
+-wuffs_png__decoder__alloc(void) {
+-  wuffs_png__decoder* x =
+-      (wuffs_png__decoder*)(calloc(sizeof(wuffs_png__decoder), 1));
+-  if (!x) {
+-    return NULL;
+-  }
+-  if (wuffs_png__decoder__initialize(
+-      x, sizeof(wuffs_png__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
+-    free(x);
+-    return NULL;
++    ok:
++    self->private_impl.p_tell_me_more = 0;
++    goto exit;
+   }
+-  return x;
+-}
+ 
+-size_t
+-sizeof__wuffs_png__decoder(void) {
+-  return sizeof(wuffs_png__decoder);
+-}
++  goto suspend;
++  suspend:
++  self->private_impl.p_tell_me_more = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 4 : 0;
+ 
+-// ---------------- Function Implementations
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
+ 
+-// ‼ WUFFS MULTI-FILE SECTION +arm_neon
+-// -------- func png.decoder.filter_1_distance_4_arm_neon
++// -------- func png.decoder.do_tell_me_more
+ 
+-#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_1_distance_4_arm_neon(
++static wuffs_base__status
++wuffs_png__decoder__do_tell_me_more(
+     wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr) {
+-  wuffs_base__slice_u8 v_curr = {0};
+-  uint8x8_t v_fa = {0};
+-  uint8x8_t v_fx = {0};
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__more_information* a_minfo,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  {
+-    wuffs_base__slice_u8 i_slice_curr = a_curr;
+-    v_curr.ptr = i_slice_curr.ptr;
+-    v_curr.len = 4;
+-    uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
+-    while (v_curr.ptr < i_end0_curr) {
+-      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-      v_fx = vadd_u8(v_fx, v_fa);
+-      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
+-      v_fa = v_fx;
+-      v_curr.ptr += 4;
+-      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-      v_fx = vadd_u8(v_fx, v_fa);
+-      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
+-      v_fa = v_fx;
+-      v_curr.ptr += 4;
+-    }
+-    v_curr.len = 4;
+-    uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
+-    while (v_curr.ptr < i_end1_curr) {
+-      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-      v_fx = vadd_u8(v_fx, v_fa);
+-      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
+-      v_fa = v_fx;
+-      v_curr.ptr += 4;
++  uint8_t v_c8 = 0;
++  uint16_t v_c16 = 0;
++  wuffs_base__io_buffer u_w = wuffs_base__empty_io_buffer();
++  wuffs_base__io_buffer* v_w = &u_w;
++  uint8_t* iop_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io0_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io1_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io2_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint64_t v_num_written = 0;
++  uint64_t v_w_mark = 0;
++  uint64_t v_r_mark = 0;
++  wuffs_base__status v_zlib_status = wuffs_base__make_status(NULL);
++
++  uint8_t* iop_a_dst = NULL;
++  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
+     }
+-    v_curr.len = 0;
+   }
+-  return wuffs_base__make_empty_struct();
+-}
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-// ‼ WUFFS MULTI-FILE SECTION -arm_neon
+-
+-// ‼ WUFFS MULTI-FILE SECTION +arm_neon
+-// -------- func png.decoder.filter_3_distance_4_arm_neon
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
+ 
+-#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_3_distance_4_arm_neon(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev) {
+-  wuffs_base__slice_u8 v_curr = {0};
+-  wuffs_base__slice_u8 v_prev = {0};
+-  uint8x8_t v_fa = {0};
+-  uint8x8_t v_fb = {0};
+-  uint8x8_t v_fx = {0};
++  uint32_t coro_susp_point = self->private_impl.p_do_tell_me_more;
++  if (coro_susp_point) {
++    v_zlib_status = self->private_data.s_do_tell_me_more.v_zlib_status;
++  }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-  if (((uint64_t)(a_prev.len)) == 0u) {
+-    {
+-      wuffs_base__slice_u8 i_slice_curr = a_curr;
+-      v_curr.ptr = i_slice_curr.ptr;
+-      v_curr.len = 4;
+-      uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
+-      while (v_curr.ptr < i_end0_curr) {
+-        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
+-        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
+-        v_fa = v_fx;
+-        v_curr.ptr += 4;
+-        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
+-        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
+-        v_fa = v_fx;
+-        v_curr.ptr += 4;
++    if (((uint8_t)(self->private_impl.f_call_sequence & 16u)) == 0u) {
++      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++      goto exit;
++    }
++    if (self->private_impl.f_metadata_fourcc == 0u) {
++      status = wuffs_base__make_status(wuffs_base__error__no_more_information);
++      goto exit;
++    }
++    do {
++      if (self->private_impl.f_metadata_flavor == 3u) {
++        while (true) {
++          if (wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))) != self->private_impl.f_metadata_y) {
++            status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position);
++            goto exit;
++          } else if (a_minfo != NULL) {
++            wuffs_base__more_information__set(a_minfo,
++                self->private_impl.f_metadata_flavor,
++                self->private_impl.f_metadata_fourcc,
++                self->private_impl.f_metadata_x,
++                self->private_impl.f_metadata_y,
++                self->private_impl.f_metadata_z);
++          }
++          if (self->private_impl.f_metadata_y >= self->private_impl.f_metadata_z) {
++            goto label__goto_done__break;
++          }
++          self->private_impl.f_metadata_y = self->private_impl.f_metadata_z;
++          status = wuffs_base__make_status(wuffs_base__suspension__even_more_information);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++        }
++      }
++      if (self->private_impl.f_metadata_is_zlib_compressed) {
++        if (self->private_impl.f_zlib_is_dirty) {
++          wuffs_private_impl__ignore_status(wuffs_zlib__decoder__initialize(&self->private_data.f_zlib,
++              sizeof (wuffs_zlib__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
++          if (self->private_impl.f_ignore_checksum) {
++            wuffs_zlib__decoder__set_quirk(&self->private_data.f_zlib, 1u, 1u);
++          }
++        }
++        self->private_impl.f_zlib_is_dirty = true;
++        self->private_impl.f_ztxt_hist_pos = 0u;
++      }
++      label__loop__continue:;
++      while (true) {
++        if (a_minfo != NULL) {
++          wuffs_base__more_information__set(a_minfo,
++              self->private_impl.f_metadata_flavor,
++              self->private_impl.f_metadata_fourcc,
++              self->private_impl.f_metadata_x,
++              self->private_impl.f_metadata_y,
++              self->private_impl.f_metadata_z);
++        }
++        if (self->private_impl.f_metadata_flavor != 4u) {
++          break;
++        }
++        if (self->private_impl.f_metadata_is_zlib_compressed) {
++          if (self->private_impl.f_chunk_type == 1346585449u) {
++            {
++              const bool o_0_closed_a_src = a_src->meta.closed;
++              const uint8_t* o_0_io2_a_src = io2_a_src;
++              wuffs_private_impl__io_reader__limit(&io2_a_src, iop_a_src,
++                  ((uint64_t)(self->private_impl.f_chunk_length)));
++              if (a_src) {
++                size_t n = ((size_t)(io2_a_src - a_src->data.ptr));
++                a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n);
++                a_src->meta.wi = n;
++              }
++              v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
++              {
++                if (a_dst) {
++                  a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++                }
++                if (a_src) {
++                  a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++                }
++                wuffs_base__status t_0 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, a_dst, a_src, wuffs_base__utility__empty_slice_u8());
++                v_zlib_status = t_0;
++                if (a_dst) {
++                  iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
++                }
++                if (a_src) {
++                  iop_a_src = a_src->data.ptr + a_src->meta.ri;
++                }
++              }
++              wuffs_private_impl__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)(wuffs_private_impl__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))))));
++              io2_a_src = o_0_io2_a_src;
++              if (a_src) {
++                a_src->meta.closed = o_0_closed_a_src;
++                a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
++              }
++            }
++            if (wuffs_base__status__is_ok(&v_zlib_status)) {
++              self->private_impl.f_metadata_is_zlib_compressed = false;
++              break;
++            } else if ( ! wuffs_base__status__is_suspension(&v_zlib_status)) {
++              status = v_zlib_status;
++              if (wuffs_base__status__is_error(&status)) {
++                goto exit;
++              } else if (wuffs_base__status__is_suspension(&status)) {
++                status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++                goto exit;
++              }
++              goto ok;
++            }
++            status = v_zlib_status;
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
++          } else if (self->private_impl.f_chunk_type == 1951945833u) {
++            {
++              const bool o_1_closed_a_src = a_src->meta.closed;
++              const uint8_t* o_1_io2_a_src = io2_a_src;
++              wuffs_private_impl__io_reader__limit(&io2_a_src, iop_a_src,
++                  ((uint64_t)(self->private_impl.f_chunk_length)));
++              if (a_src) {
++                size_t n = ((size_t)(io2_a_src - a_src->data.ptr));
++                a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n);
++                a_src->meta.wi = n;
++              }
++              v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
++              {
++                if (a_dst) {
++                  a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++                }
++                if (a_src) {
++                  a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++                }
++                wuffs_base__status t_1 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, a_dst, a_src, wuffs_base__utility__empty_slice_u8());
++                v_zlib_status = t_1;
++                if (a_dst) {
++                  iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
++                }
++                if (a_src) {
++                  iop_a_src = a_src->data.ptr + a_src->meta.ri;
++                }
++              }
++              wuffs_private_impl__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)(wuffs_private_impl__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))))));
++              io2_a_src = o_1_io2_a_src;
++              if (a_src) {
++                a_src->meta.closed = o_1_closed_a_src;
++                a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
++              }
++            }
++            if (wuffs_base__status__is_ok(&v_zlib_status)) {
++              self->private_impl.f_metadata_is_zlib_compressed = false;
++              break;
++            } else if ( ! wuffs_base__status__is_suspension(&v_zlib_status)) {
++              status = v_zlib_status;
++              if (wuffs_base__status__is_error(&status)) {
++                goto exit;
++              } else if (wuffs_base__status__is_suspension(&status)) {
++                status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++                goto exit;
++              }
++              goto ok;
++            }
++            status = v_zlib_status;
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
++          } else if (self->private_impl.f_chunk_type == 1951945850u) {
++            if (self->private_impl.f_ztxt_ri == self->private_impl.f_ztxt_wi) {
++              {
++                wuffs_base__io_buffer* o_2_v_w = v_w;
++                uint8_t* o_2_iop_v_w = iop_v_w;
++                uint8_t* o_2_io0_v_w = io0_v_w;
++                uint8_t* o_2_io1_v_w = io1_v_w;
++                uint8_t* o_2_io2_v_w = io2_v_w;
++                v_w = wuffs_private_impl__io_writer__set(
++                    &u_w,
++                    &iop_v_w,
++                    &io0_v_w,
++                    &io1_v_w,
++                    &io2_v_w,
++                    wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024),
++                    self->private_impl.f_ztxt_hist_pos);
++                {
++                  const bool o_3_closed_a_src = a_src->meta.closed;
++                  const uint8_t* o_3_io2_a_src = io2_a_src;
++                  wuffs_private_impl__io_reader__limit(&io2_a_src, iop_a_src,
++                      ((uint64_t)(self->private_impl.f_chunk_length)));
++                  if (a_src) {
++                    size_t n = ((size_t)(io2_a_src - a_src->data.ptr));
++                    a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n);
++                    a_src->meta.wi = n;
++                  }
++                  v_w_mark = ((uint64_t)(iop_v_w - io0_v_w));
++                  v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
++                  {
++                    u_w.meta.wi = ((size_t)(iop_v_w - u_w.data.ptr));
++                    if (a_src) {
++                      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++                    }
++                    wuffs_base__status t_2 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, v_w, a_src, wuffs_base__utility__empty_slice_u8());
++                    v_zlib_status = t_2;
++                    iop_v_w = u_w.data.ptr + u_w.meta.wi;
++                    if (a_src) {
++                      iop_a_src = a_src->data.ptr + a_src->meta.ri;
++                    }
++                  }
++                  wuffs_private_impl__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)(wuffs_private_impl__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))))));
++                  v_num_written = wuffs_private_impl__io__count_since(v_w_mark, ((uint64_t)(iop_v_w - io0_v_w)));
++                  io2_a_src = o_3_io2_a_src;
++                  if (a_src) {
++                    a_src->meta.closed = o_3_closed_a_src;
++                    a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
++                  }
++                }
++                v_w = o_2_v_w;
++                iop_v_w = o_2_iop_v_w;
++                io0_v_w = o_2_io0_v_w;
++                io1_v_w = o_2_io1_v_w;
++                io2_v_w = o_2_io2_v_w;
++              }
++              if (v_num_written > 1024u) {
++                status = wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_i_o);
++                goto exit;
++              }
++              self->private_impl.f_ztxt_ri = 0u;
++              self->private_impl.f_ztxt_wi = ((uint32_t)(v_num_written));
++              wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_ztxt_hist_pos, v_num_written);
++            }
++            while (self->private_impl.f_ztxt_ri < self->private_impl.f_ztxt_wi) {
++              v_c16 = WUFFS_PNG__LATIN_1[self->private_data.f_dst_palette[self->private_impl.f_ztxt_ri]];
++              if (v_c16 == 0u) {
++                status = wuffs_base__make_status(wuffs_png__error__bad_text_chunk_not_latin_1);
++                goto exit;
++              } else if (v_c16 <= 127u) {
++                if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
++                  goto label__loop__continue;
++                }
++                self->private_impl.f_ztxt_ri += 1u;
++                (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(v_c16))), iop_a_dst += 1);
++              } else {
++                if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 1u) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
++                  goto label__loop__continue;
++                }
++                self->private_impl.f_ztxt_ri += 1u;
++                (wuffs_base__poke_u16le__no_bounds_check(iop_a_dst, v_c16), iop_a_dst += 2);
++              }
++            }
++            if (wuffs_base__status__is_ok(&v_zlib_status)) {
++              self->private_impl.f_metadata_is_zlib_compressed = false;
++              break;
++            } else if ( ! wuffs_base__status__is_suspension(&v_zlib_status)) {
++              status = v_zlib_status;
++              if (wuffs_base__status__is_error(&status)) {
++                goto exit;
++              } else if (wuffs_base__status__is_suspension(&status)) {
++                status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++                goto exit;
++              }
++              goto ok;
++            } else if (v_zlib_status.repr != wuffs_base__suspension__short_write) {
++              status = v_zlib_status;
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
++            }
++          } else {
++            status = wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_chunk_type);
++            goto exit;
++          }
++        } else if ((self->private_impl.f_chunk_type == 1951945833u) && (self->private_impl.f_metadata_fourcc == 1263947862u)) {
++          while (true) {
++            if (self->private_impl.f_chunk_length <= 0u) {
++              goto label__loop__break;
++            } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
++              goto label__loop__continue;
++            } else if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
++              goto label__loop__continue;
++            }
++            self->private_impl.f_chunk_length -= 1u;
++            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++            iop_a_src += 1u;
++            (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_c8), iop_a_dst += 1);
++          }
++        } else {
++          while (true) {
++            if (self->private_impl.f_chunk_length <= 0u) {
++              if (self->private_impl.f_metadata_fourcc == 1263947851u) {
++                status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++                goto exit;
++              }
++              goto label__loop__break;
++            } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
++              goto label__loop__continue;
++            }
++            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++            if (v_c8 == 0u) {
++              self->private_impl.f_chunk_length -= 1u;
++              iop_a_src += 1u;
++              goto label__loop__break;
++            }
++            v_c16 = WUFFS_PNG__LATIN_1[v_c8];
++            if (v_c16 == 0u) {
++              status = wuffs_base__make_status(wuffs_png__error__bad_text_chunk_not_latin_1);
++              goto exit;
++            } else if (v_c16 <= 127u) {
++              if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
++                goto label__loop__continue;
++              }
++              self->private_impl.f_chunk_length -= 1u;
++              iop_a_src += 1u;
++              (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(v_c16))), iop_a_dst += 1);
++            } else {
++              if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 1u) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11);
++                goto label__loop__continue;
++              }
++              self->private_impl.f_chunk_length -= 1u;
++              iop_a_src += 1u;
++              (wuffs_base__poke_u16le__no_bounds_check(iop_a_dst, v_c16), iop_a_dst += 2);
++            }
++          }
++        }
+       }
+-      v_curr.len = 4;
+-      uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
+-      while (v_curr.ptr < i_end1_curr) {
+-        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
+-        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
+-        v_fa = v_fx;
+-        v_curr.ptr += 4;
++      label__loop__break:;
++      if (self->private_impl.f_metadata_fourcc == 1263947851u) {
++        self->private_impl.f_metadata_fourcc = 1263947862u;
++        if (self->private_impl.f_chunk_type == 1951945833u) {
++          if (self->private_impl.f_chunk_length <= 1u) {
++            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++            goto exit;
++          }
++          self->private_impl.f_chunk_length -= 2u;
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint8_t t_3 = *iop_a_src++;
++            v_c8 = t_3;
++          }
++          if (v_c8 == 0u) {
++            self->private_impl.f_metadata_is_zlib_compressed = false;
++          } else if (v_c8 == 1u) {
++            self->private_impl.f_metadata_is_zlib_compressed = true;
++          } else {
++            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++            goto exit;
++          }
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint8_t t_4 = *iop_a_src++;
++            v_c8 = t_4;
++          }
++          if ((v_c8 != 0u) && self->private_impl.f_metadata_is_zlib_compressed) {
++            status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method);
++            goto exit;
++          }
++          self->private_impl.f_metadata_fourcc -= 2u;
++          while (self->private_impl.f_metadata_fourcc != 1263947862u) {
++            self->private_impl.f_metadata_fourcc += 1u;
++            while (true) {
++              if (self->private_impl.f_chunk_length <= 0u) {
++                status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++                goto exit;
++              }
++              self->private_impl.f_chunk_length -= 1u;
++              {
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint8_t t_5 = *iop_a_src++;
++                v_c8 = t_5;
++              }
++              if (v_c8 == 0u) {
++                break;
++              }
++            }
++          }
++        } else if (self->private_impl.f_chunk_type == 1951945850u) {
++          if (self->private_impl.f_chunk_length <= 0u) {
++            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++            goto exit;
++          }
++          self->private_impl.f_chunk_length -= 1u;
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint8_t t_6 = *iop_a_src++;
++            v_c8 = t_6;
++          }
++          if (v_c8 != 0u) {
++            status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method);
++            goto exit;
++          }
++          self->private_impl.f_metadata_is_zlib_compressed = true;
++        }
++        self->private_impl.f_call_sequence &= 239u;
++        status = wuffs_base__make_status(NULL);
++        goto ok;
+       }
+-      v_curr.len = 0;
++    } while (0);
++    label__goto_done__break:;
++    if (self->private_impl.f_chunk_length != 0u) {
++      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++      goto exit;
+     }
+-  } else {
+-    {
+-      wuffs_base__slice_u8 i_slice_curr = a_curr;
+-      v_curr.ptr = i_slice_curr.ptr;
+-      wuffs_base__slice_u8 i_slice_prev = a_prev;
+-      v_prev.ptr = i_slice_prev.ptr;
+-      i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
+-      v_curr.len = 4;
+-      v_prev.len = 4;
+-      uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
+-      while (v_curr.ptr < i_end0_curr) {
+-        v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
+-        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
+-        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
+-        v_fa = v_fx;
+-        v_curr.ptr += 4;
+-        v_prev.ptr += 4;
+-        v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
+-        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
+-        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
+-        v_fa = v_fx;
+-        v_curr.ptr += 4;
+-        v_prev.ptr += 4;
+-      }
+-      v_curr.len = 4;
+-      v_prev.len = 4;
+-      uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
+-      while (v_curr.ptr < i_end1_curr) {
+-        v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
+-        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
+-        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
+-        v_fa = v_fx;
+-        v_curr.ptr += 4;
+-        v_prev.ptr += 4;
+-      }
+-      v_curr.len = 0;
+-      v_prev.len = 0;
++    self->private_data.s_do_tell_me_more.scratch = 4u;
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
++    if (self->private_data.s_do_tell_me_more.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++      self->private_data.s_do_tell_me_more.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++      iop_a_src = io2_a_src;
++      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++      goto suspend;
+     }
+-  }
+-  return wuffs_base__make_empty_struct();
+-}
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-// ‼ WUFFS MULTI-FILE SECTION -arm_neon
+-
+-// ‼ WUFFS MULTI-FILE SECTION +arm_neon
+-// -------- func png.decoder.filter_4_distance_3_arm_neon
+-
+-#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_4_distance_3_arm_neon(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev) {
+-  wuffs_base__slice_u8 v_curr = {0};
+-  wuffs_base__slice_u8 v_prev = {0};
+-  uint8x8_t v_fa = {0};
+-  uint8x8_t v_fb = {0};
+-  uint8x8_t v_fc = {0};
+-  uint8x8_t v_fx = {0};
+-  uint16x8_t v_fafb = {0};
+-  uint16x8_t v_fcfc = {0};
+-  uint16x8_t v_pa = {0};
+-  uint16x8_t v_pb = {0};
+-  uint16x8_t v_pc = {0};
+-  uint16x8_t v_cmpab = {0};
+-  uint16x8_t v_cmpac = {0};
+-  uint8x8_t v_picka = {0};
+-  uint8x8_t v_pickb = {0};
++    iop_a_src += self->private_data.s_do_tell_me_more.scratch;
++    self->private_impl.f_metadata_flavor = 0u;
++    self->private_impl.f_metadata_fourcc = 0u;
++    self->private_impl.f_metadata_x = 0u;
++    self->private_impl.f_metadata_y = 0u;
++    self->private_impl.f_metadata_z = 0u;
++    self->private_impl.f_call_sequence &= 239u;
++    status = wuffs_base__make_status(NULL);
++    goto ok;
+ 
+-  {
+-    wuffs_base__slice_u8 i_slice_curr = a_curr;
+-    v_curr.ptr = i_slice_curr.ptr;
+-    wuffs_base__slice_u8 i_slice_prev = a_prev;
+-    v_prev.ptr = i_slice_prev.ptr;
+-    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
+-    v_curr.len = 4;
+-    v_prev.len = 4;
+-    uint8_t* i_end0_curr = v_curr.ptr + wuffs_base__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 7, 6);
+-    while (v_curr.ptr < i_end0_curr) {
+-      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
+-      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-      v_fafb = vaddl_u8(v_fa, v_fb);
+-      v_fcfc = vaddl_u8(v_fc, v_fc);
+-      v_pa = vabdl_u8(v_fb, v_fc);
+-      v_pb = vabdl_u8(v_fa, v_fc);
+-      v_pc = vabdq_u16(v_fafb, v_fcfc);
+-      v_cmpab = vcleq_u16(v_pa, v_pb);
+-      v_cmpac = vcleq_u16(v_pa, v_pc);
+-      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
+-      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
+-      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
+-      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
+-      v_fc = v_fb;
+-      v_fa = v_fx;
+-      v_curr.ptr += 3;
+-      v_prev.ptr += 3;
+-      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
+-      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-      v_fafb = vaddl_u8(v_fa, v_fb);
+-      v_fcfc = vaddl_u8(v_fc, v_fc);
+-      v_pa = vabdl_u8(v_fb, v_fc);
+-      v_pb = vabdl_u8(v_fa, v_fc);
+-      v_pc = vabdq_u16(v_fafb, v_fcfc);
+-      v_cmpab = vcleq_u16(v_pa, v_pb);
+-      v_cmpac = vcleq_u16(v_pa, v_pc);
+-      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
+-      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
+-      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
+-      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
+-      v_fc = v_fb;
+-      v_fa = v_fx;
+-      v_curr.ptr += 3;
+-      v_prev.ptr += 3;
+-    }
+-    v_curr.len = 4;
+-    v_prev.len = 4;
+-    uint8_t* i_end1_curr = v_curr.ptr + wuffs_base__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 4, 3);
+-    while (v_curr.ptr < i_end1_curr) {
+-      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
+-      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-      v_fafb = vaddl_u8(v_fa, v_fb);
+-      v_fcfc = vaddl_u8(v_fc, v_fc);
+-      v_pa = vabdl_u8(v_fb, v_fc);
+-      v_pb = vabdl_u8(v_fa, v_fc);
+-      v_pc = vabdq_u16(v_fafb, v_fcfc);
+-      v_cmpab = vcleq_u16(v_pa, v_pb);
+-      v_cmpac = vcleq_u16(v_pa, v_pc);
+-      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
+-      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
+-      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
+-      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
+-      v_fc = v_fb;
+-      v_fa = v_fx;
+-      v_curr.ptr += 3;
+-      v_prev.ptr += 3;
+-    }
+-    v_curr.len = 3;
+-    v_prev.len = 3;
+-    uint8_t* i_end2_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3);
+-    while (v_curr.ptr < i_end2_curr) {
+-      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u24le__no_bounds_check(v_prev.ptr)));
+-      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u24le__no_bounds_check(v_curr.ptr)));
+-      v_fafb = vaddl_u8(v_fa, v_fb);
+-      v_fcfc = vaddl_u8(v_fc, v_fc);
+-      v_pa = vabdl_u8(v_fb, v_fc);
+-      v_pb = vabdl_u8(v_fa, v_fc);
+-      v_pc = vabdq_u16(v_fafb, v_fcfc);
+-      v_cmpab = vcleq_u16(v_pa, v_pb);
+-      v_cmpac = vcleq_u16(v_pa, v_pc);
+-      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
+-      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
+-      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
+-      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
+-      v_curr.ptr += 3;
+-      v_prev.ptr += 3;
+-    }
+-    v_curr.len = 0;
+-    v_prev.len = 0;
++    ok:
++    self->private_impl.p_do_tell_me_more = 0;
++    goto exit;
+   }
+-  return wuffs_base__make_empty_struct();
+-}
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-// ‼ WUFFS MULTI-FILE SECTION -arm_neon
+ 
+-// ‼ WUFFS MULTI-FILE SECTION +arm_neon
+-// -------- func png.decoder.filter_4_distance_4_arm_neon
+-
+-#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_4_distance_4_arm_neon(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev) {
+-  wuffs_base__slice_u8 v_curr = {0};
+-  wuffs_base__slice_u8 v_prev = {0};
+-  uint8x8_t v_fa = {0};
+-  uint8x8_t v_fb = {0};
+-  uint8x8_t v_fc = {0};
+-  uint8x8_t v_fx = {0};
+-  uint16x8_t v_fafb = {0};
+-  uint16x8_t v_fcfc = {0};
+-  uint16x8_t v_pa = {0};
+-  uint16x8_t v_pb = {0};
+-  uint16x8_t v_pc = {0};
+-  uint16x8_t v_cmpab = {0};
+-  uint16x8_t v_cmpac = {0};
+-  uint8x8_t v_picka = {0};
+-  uint8x8_t v_pickb = {0};
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_tell_me_more = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_do_tell_me_more.v_zlib_status = v_zlib_status;
+ 
+-  {
+-    wuffs_base__slice_u8 i_slice_curr = a_curr;
+-    v_curr.ptr = i_slice_curr.ptr;
+-    wuffs_base__slice_u8 i_slice_prev = a_prev;
+-    v_prev.ptr = i_slice_prev.ptr;
+-    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
+-    v_curr.len = 4;
+-    v_prev.len = 4;
+-    uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
+-    while (v_curr.ptr < i_end0_curr) {
+-      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
+-      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-      v_fafb = vaddl_u8(v_fa, v_fb);
+-      v_fcfc = vaddl_u8(v_fc, v_fc);
+-      v_pa = vabdl_u8(v_fb, v_fc);
+-      v_pb = vabdl_u8(v_fa, v_fc);
+-      v_pc = vabdq_u16(v_fafb, v_fcfc);
+-      v_cmpab = vcleq_u16(v_pa, v_pb);
+-      v_cmpac = vcleq_u16(v_pa, v_pc);
+-      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
+-      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
+-      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
+-      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
+-      v_fc = v_fb;
+-      v_fa = v_fx;
+-      v_curr.ptr += 4;
+-      v_prev.ptr += 4;
+-      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
+-      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-      v_fafb = vaddl_u8(v_fa, v_fb);
+-      v_fcfc = vaddl_u8(v_fc, v_fc);
+-      v_pa = vabdl_u8(v_fb, v_fc);
+-      v_pb = vabdl_u8(v_fa, v_fc);
+-      v_pc = vabdq_u16(v_fafb, v_fcfc);
+-      v_cmpab = vcleq_u16(v_pa, v_pb);
+-      v_cmpac = vcleq_u16(v_pa, v_pc);
+-      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
+-      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
+-      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
+-      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
+-      v_fc = v_fb;
+-      v_fa = v_fx;
+-      v_curr.ptr += 4;
+-      v_prev.ptr += 4;
+-    }
+-    v_curr.len = 4;
+-    v_prev.len = 4;
+-    uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
+-    while (v_curr.ptr < i_end1_curr) {
+-      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
+-      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-      v_fafb = vaddl_u8(v_fa, v_fb);
+-      v_fcfc = vaddl_u8(v_fc, v_fc);
+-      v_pa = vabdl_u8(v_fb, v_fc);
+-      v_pb = vabdl_u8(v_fa, v_fc);
+-      v_pc = vabdq_u16(v_fafb, v_fcfc);
+-      v_cmpab = vcleq_u16(v_pa, v_pb);
+-      v_cmpac = vcleq_u16(v_pa, v_pc);
+-      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
+-      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
+-      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
+-      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
+-      v_fc = v_fb;
+-      v_fa = v_fx;
+-      v_curr.ptr += 4;
+-      v_prev.ptr += 4;
+-    }
+-    v_curr.len = 0;
+-    v_prev.len = 0;
++  goto exit;
++  exit:
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+   }
+-  return wuffs_base__make_empty_struct();
+-}
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-// ‼ WUFFS MULTI-FILE SECTION -arm_neon
+-
+-// -------- func png.decoder.filter_1
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_1(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr) {
+-  return (*self->private_impl.choosy_filter_1)(self, a_curr);
+-}
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_1__choosy_default(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr) {
+-  uint64_t v_filter_distance = 0;
+-  uint8_t v_fa = 0;
+-  uint64_t v_i_start = 0;
+-  uint64_t v_i = 0;
+-
+-  v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance));
+-  v_i_start = 0u;
+-  while (v_i_start < v_filter_distance) {
+-    v_fa = 0u;
+-    v_i = v_i_start;
+-    while (v_i < ((uint64_t)(a_curr.len))) {
+-      a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + v_fa));
+-      v_fa = a_curr.ptr[v_i];
+-      v_i += v_filter_distance;
+-    }
+-    v_i_start += 1u;
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+-  return wuffs_base__make_empty_struct();
+-}
+-
+-// -------- func png.decoder.filter_1_distance_3_fallback
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_1_distance_3_fallback(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr) {
+-  wuffs_base__slice_u8 v_curr = {0};
+-  uint8_t v_fa0 = 0;
+-  uint8_t v_fa1 = 0;
+-  uint8_t v_fa2 = 0;
+ 
+-  {
+-    wuffs_base__slice_u8 i_slice_curr = a_curr;
+-    v_curr.ptr = i_slice_curr.ptr;
+-    v_curr.len = 3;
+-    uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 6) * 6);
+-    while (v_curr.ptr < i_end0_curr) {
+-      v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0u]));
+-      v_curr.ptr[0u] = v_fa0;
+-      v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1u]));
+-      v_curr.ptr[1u] = v_fa1;
+-      v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2u]));
+-      v_curr.ptr[2u] = v_fa2;
+-      v_curr.ptr += 3;
+-      v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0u]));
+-      v_curr.ptr[0u] = v_fa0;
+-      v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1u]));
+-      v_curr.ptr[1u] = v_fa1;
+-      v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2u]));
+-      v_curr.ptr[2u] = v_fa2;
+-      v_curr.ptr += 3;
+-    }
+-    v_curr.len = 3;
+-    uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3);
+-    while (v_curr.ptr < i_end1_curr) {
+-      v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0u]));
+-      v_curr.ptr[0u] = v_fa0;
+-      v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1u]));
+-      v_curr.ptr[1u] = v_fa1;
+-      v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2u]));
+-      v_curr.ptr[2u] = v_fa2;
+-      v_curr.ptr += 3;
+-    }
+-    v_curr.len = 0;
+-  }
+-  return wuffs_base__make_empty_struct();
++  return status;
+ }
+ 
+-// -------- func png.decoder.filter_1_distance_4_fallback
++// -------- func png.decoder.workbuf_len
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_1_distance_4_fallback(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr) {
+-  wuffs_base__slice_u8 v_curr = {0};
+-  uint8_t v_fa0 = 0;
+-  uint8_t v_fa1 = 0;
+-  uint8_t v_fa2 = 0;
+-  uint8_t v_fa3 = 0;
+-
+-  {
+-    wuffs_base__slice_u8 i_slice_curr = a_curr;
+-    v_curr.ptr = i_slice_curr.ptr;
+-    v_curr.len = 4;
+-    uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
+-    while (v_curr.ptr < i_end0_curr) {
+-      v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0u]));
+-      v_curr.ptr[0u] = v_fa0;
+-      v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1u]));
+-      v_curr.ptr[1u] = v_fa1;
+-      v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2u]));
+-      v_curr.ptr[2u] = v_fa2;
+-      v_fa3 = ((uint8_t)(v_fa3 + v_curr.ptr[3u]));
+-      v_curr.ptr[3u] = v_fa3;
+-      v_curr.ptr += 4;
+-    }
+-    v_curr.len = 0;
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_png__decoder__workbuf_len(
++    const wuffs_png__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_range_ii_u64();
+   }
+-  return wuffs_base__make_empty_struct();
+-}
+-
+-// -------- func png.decoder.filter_2
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_2(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev) {
+-  uint64_t v_n = 0;
+-  uint64_t v_i = 0;
+-
+-  v_n = wuffs_base__u64__min(((uint64_t)(a_curr.len)), ((uint64_t)(a_prev.len)));
+-  v_i = 0u;
+-  while (v_i < v_n) {
+-    a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + a_prev.ptr[v_i]));
+-    v_i += 1u;
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_range_ii_u64();
+   }
+-  return wuffs_base__make_empty_struct();
++
++  return wuffs_base__utility__make_range_ii_u64(self->private_impl.f_overall_workbuf_length, self->private_impl.f_overall_workbuf_length);
+ }
+ 
+-// -------- func png.decoder.filter_3
++// -------- func png.decoder.filter_and_swizzle
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_3(
++static wuffs_base__status
++wuffs_png__decoder__filter_and_swizzle(
+     wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev) {
+-  return (*self->private_impl.choosy_filter_3)(self, a_curr, a_prev);
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__slice_u8 a_workbuf) {
++  return (*self->private_impl.choosy_filter_and_swizzle)(self, a_dst, a_workbuf);
+ }
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_3__choosy_default(
++static wuffs_base__status
++wuffs_png__decoder__filter_and_swizzle__choosy_default(
+     wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev) {
+-  uint64_t v_filter_distance = 0;
+-  uint64_t v_n = 0;
+-  uint64_t v_i = 0;
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__slice_u8 a_workbuf) {
++  wuffs_base__pixel_format v_dst_pixfmt = {0};
++  uint32_t v_dst_bits_per_pixel = 0;
++  uint64_t v_dst_bytes_per_pixel = 0;
++  uint64_t v_dst_bytes_per_row0 = 0;
++  uint64_t v_dst_bytes_per_row1 = 0;
++  wuffs_base__slice_u8 v_dst_palette = {0};
++  wuffs_base__table_u8 v_tab = {0};
++  uint32_t v_y = 0;
++  wuffs_base__slice_u8 v_dst = {0};
++  uint8_t v_filter = 0;
++  wuffs_base__slice_u8 v_curr_row = {0};
++  wuffs_base__slice_u8 v_prev_row = {0};
+ 
+-  v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance));
+-  if (((uint64_t)(a_prev.len)) == 0u) {
+-    v_i = v_filter_distance;
+-    while (v_i < ((uint64_t)(a_curr.len))) {
+-      a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + (a_curr.ptr[(v_i - v_filter_distance)] / 2u)));
+-      v_i += 1u;
+-    }
++  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
++  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
++  if ((v_dst_bits_per_pixel & 7u) != 0u) {
++    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++  }
++  v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8u)));
++  v_dst_bytes_per_row0 = (((uint64_t)(self->private_impl.f_frame_rect_x0)) * v_dst_bytes_per_pixel);
++  v_dst_bytes_per_row1 = (((uint64_t)(self->private_impl.f_frame_rect_x1)) * v_dst_bytes_per_pixel);
++  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024));
++  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
++  if (v_dst_bytes_per_row1 < ((uint64_t)(v_tab.width))) {
++    v_tab = wuffs_base__table_u8__subtable_ij(v_tab,
++        0u,
++        0u,
++        v_dst_bytes_per_row1,
++        ((uint64_t)(v_tab.height)));
++  }
++  if (v_dst_bytes_per_row0 < ((uint64_t)(v_tab.width))) {
++    v_tab = wuffs_base__table_u8__subtable_ij(v_tab,
++        v_dst_bytes_per_row0,
++        0u,
++        ((uint64_t)(v_tab.width)),
++        ((uint64_t)(v_tab.height)));
+   } else {
+-    v_n = wuffs_base__u64__min(((uint64_t)(a_curr.len)), ((uint64_t)(a_prev.len)));
+-    v_i = 0u;
+-    while ((v_i < v_n) && (v_i < v_filter_distance)) {
+-      a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + (a_prev.ptr[v_i] / 2u)));
+-      v_i += 1u;
++    v_tab = wuffs_base__table_u8__subtable_ij(v_tab,
++        0u,
++        0u,
++        0u,
++        0u);
++  }
++  v_y = self->private_impl.f_frame_rect_y0;
++  while (v_y < self->private_impl.f_frame_rect_y1) {
++    v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, v_y);
++    if (1u > ((uint64_t)(a_workbuf.len))) {
++      return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length);
+     }
+-    v_i = v_filter_distance;
+-    while (v_i < v_n) {
+-      a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + ((uint8_t)(((((uint32_t)(a_curr.ptr[(v_i - v_filter_distance)])) + ((uint32_t)(a_prev.ptr[v_i]))) / 2u)))));
+-      v_i += 1u;
++    v_filter = a_workbuf.ptr[0u];
++    a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, 1u);
++    if (self->private_impl.f_pass_bytes_per_row > ((uint64_t)(a_workbuf.len))) {
++      return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length);
++    }
++    v_curr_row = wuffs_base__slice_u8__subslice_j(a_workbuf, self->private_impl.f_pass_bytes_per_row);
++    a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, self->private_impl.f_pass_bytes_per_row);
++    if (v_filter == 0u) {
++    } else if (v_filter == 1u) {
++      wuffs_png__decoder__filter_1(self, v_curr_row);
++    } else if (v_filter == 2u) {
++      wuffs_png__decoder__filter_2(self, v_curr_row, v_prev_row);
++    } else if (v_filter == 3u) {
++      wuffs_png__decoder__filter_3(self, v_curr_row, v_prev_row);
++    } else if (v_filter == 4u) {
++      wuffs_png__decoder__filter_4(self, v_curr_row, v_prev_row);
++    } else {
++      return wuffs_base__make_status(wuffs_png__error__bad_filter);
+     }
++    wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, v_curr_row);
++    v_prev_row = v_curr_row;
++    v_y += 1u;
+   }
+-  return wuffs_base__make_empty_struct();
++  return wuffs_base__make_status(NULL);
+ }
+ 
+-// -------- func png.decoder.filter_3_distance_3_fallback
++// -------- func png.decoder.filter_and_swizzle_tricky
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_3_distance_3_fallback(
++static wuffs_base__status
++wuffs_png__decoder__filter_and_swizzle_tricky(
+     wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev) {
+-  wuffs_base__slice_u8 v_curr = {0};
+-  wuffs_base__slice_u8 v_prev = {0};
+-  uint8_t v_fa0 = 0;
+-  uint8_t v_fa1 = 0;
+-  uint8_t v_fa2 = 0;
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__slice_u8 a_workbuf) {
++  wuffs_base__pixel_format v_dst_pixfmt = {0};
++  uint32_t v_dst_bits_per_pixel = 0;
++  uint64_t v_dst_bytes_per_pixel = 0;
++  uint64_t v_dst_bytes_per_row1 = 0;
++  wuffs_base__slice_u8 v_dst_palette = {0};
++  wuffs_base__table_u8 v_tab = {0};
++  uint64_t v_src_bytes_per_pixel = 0;
++  uint32_t v_x = 0;
++  uint32_t v_y = 0;
++  uint64_t v_i = 0;
++  wuffs_base__slice_u8 v_dst = {0};
++  uint8_t v_filter = 0;
++  wuffs_base__slice_u8 v_s = {0};
++  wuffs_base__slice_u8 v_curr_row = {0};
++  wuffs_base__slice_u8 v_prev_row = {0};
++  uint8_t v_bits_unpacked[8] = {0};
++  uint8_t v_bits_packed = 0;
++  uint8_t v_packs_remaining = 0;
++  uint8_t v_multiplier = 0;
++  uint8_t v_shift = 0;
+ 
+-  if (((uint64_t)(a_prev.len)) == 0u) {
+-    {
+-      wuffs_base__slice_u8 i_slice_curr = a_curr;
+-      v_curr.ptr = i_slice_curr.ptr;
+-      v_curr.len = 3;
+-      uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 6) * 6);
+-      while (v_curr.ptr < i_end0_curr) {
+-        v_fa0 = ((uint8_t)((v_fa0 / 2u) + v_curr.ptr[0u]));
+-        v_curr.ptr[0u] = v_fa0;
+-        v_fa1 = ((uint8_t)((v_fa1 / 2u) + v_curr.ptr[1u]));
+-        v_curr.ptr[1u] = v_fa1;
+-        v_fa2 = ((uint8_t)((v_fa2 / 2u) + v_curr.ptr[2u]));
+-        v_curr.ptr[2u] = v_fa2;
+-        v_curr.ptr += 3;
+-        v_fa0 = ((uint8_t)((v_fa0 / 2u) + v_curr.ptr[0u]));
+-        v_curr.ptr[0u] = v_fa0;
+-        v_fa1 = ((uint8_t)((v_fa1 / 2u) + v_curr.ptr[1u]));
+-        v_curr.ptr[1u] = v_fa1;
+-        v_fa2 = ((uint8_t)((v_fa2 / 2u) + v_curr.ptr[2u]));
+-        v_curr.ptr[2u] = v_fa2;
+-        v_curr.ptr += 3;
++  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
++  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
++  if ((v_dst_bits_per_pixel & 7u) != 0u) {
++    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++  }
++  v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8u)));
++  v_dst_bytes_per_row1 = (((uint64_t)(self->private_impl.f_frame_rect_x1)) * v_dst_bytes_per_pixel);
++  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024));
++  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
++  v_src_bytes_per_pixel = 1u;
++  if (self->private_impl.f_depth >= 8u) {
++    v_src_bytes_per_pixel = (((uint64_t)(WUFFS_PNG__NUM_CHANNELS[self->private_impl.f_color_type])) * ((uint64_t)(((uint8_t)(self->private_impl.f_depth >> 3u)))));
++  }
++  if (self->private_impl.f_chunk_type_array[0u] == 73u) {
++    v_y = ((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][5u]));
++  } else {
++    v_y = self->private_impl.f_frame_rect_y0;
++  }
++  while (v_y < self->private_impl.f_frame_rect_y1) {
++    v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, v_y);
++    if (v_dst_bytes_per_row1 < ((uint64_t)(v_dst.len))) {
++      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row1);
++    }
++    if (1u > ((uint64_t)(a_workbuf.len))) {
++      return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length);
++    }
++    v_filter = a_workbuf.ptr[0u];
++    a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, 1u);
++    if (self->private_impl.f_pass_bytes_per_row > ((uint64_t)(a_workbuf.len))) {
++      return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length);
++    }
++    v_curr_row = wuffs_base__slice_u8__subslice_j(a_workbuf, self->private_impl.f_pass_bytes_per_row);
++    a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, self->private_impl.f_pass_bytes_per_row);
++    if (v_filter == 0u) {
++    } else if (v_filter == 1u) {
++      wuffs_png__decoder__filter_1(self, v_curr_row);
++    } else if (v_filter == 2u) {
++      wuffs_png__decoder__filter_2(self, v_curr_row, v_prev_row);
++    } else if (v_filter == 3u) {
++      wuffs_png__decoder__filter_3(self, v_curr_row, v_prev_row);
++    } else if (v_filter == 4u) {
++      wuffs_png__decoder__filter_4(self, v_curr_row, v_prev_row);
++    } else {
++      return wuffs_base__make_status(wuffs_png__error__bad_filter);
++    }
++    v_s = v_curr_row;
++    if (self->private_impl.f_chunk_type_array[0u] == 73u) {
++      v_x = ((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][2u]));
++    } else {
++      v_x = self->private_impl.f_frame_rect_x0;
++    }
++    if (self->private_impl.f_depth == 8u) {
++      while (v_x < self->private_impl.f_frame_rect_x1) {
++        v_i = (((uint64_t)(v_x)) * v_dst_bytes_per_pixel);
++        if (v_i <= ((uint64_t)(v_dst.len))) {
++          if (((uint32_t)(self->private_impl.f_remap_transparency)) != 0u) {
++            if (self->private_impl.f_color_type == 0u) {
++              if (1u <= ((uint64_t)(v_s.len))) {
++                v_bits_unpacked[0u] = v_s.ptr[0u];
++                v_bits_unpacked[1u] = v_s.ptr[0u];
++                v_bits_unpacked[2u] = v_s.ptr[0u];
++                v_bits_unpacked[3u] = 255u;
++                v_s = wuffs_base__slice_u8__subslice_i(v_s, 1u);
++                if (((uint32_t)(self->private_impl.f_remap_transparency)) == ((((uint32_t)(v_bits_unpacked[0u])) << 0u) |
++                    (((uint32_t)(v_bits_unpacked[1u])) << 8u) |
++                    (((uint32_t)(v_bits_unpacked[2u])) << 16u) |
++                    (((uint32_t)(v_bits_unpacked[3u])) << 24u))) {
++                  v_bits_unpacked[0u] = 0u;
++                  v_bits_unpacked[1u] = 0u;
++                  v_bits_unpacked[2u] = 0u;
++                  v_bits_unpacked[3u] = 0u;
++                }
++                wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4));
++              }
++            } else {
++              if (3u <= ((uint64_t)(v_s.len))) {
++                v_bits_unpacked[0u] = v_s.ptr[2u];
++                v_bits_unpacked[1u] = v_s.ptr[1u];
++                v_bits_unpacked[2u] = v_s.ptr[0u];
++                v_bits_unpacked[3u] = 255u;
++                v_s = wuffs_base__slice_u8__subslice_i(v_s, 3u);
++                if (((uint32_t)(self->private_impl.f_remap_transparency)) == ((((uint32_t)(v_bits_unpacked[0u])) << 0u) |
++                    (((uint32_t)(v_bits_unpacked[1u])) << 8u) |
++                    (((uint32_t)(v_bits_unpacked[2u])) << 16u) |
++                    (((uint32_t)(v_bits_unpacked[3u])) << 24u))) {
++                  v_bits_unpacked[0u] = 0u;
++                  v_bits_unpacked[1u] = 0u;
++                  v_bits_unpacked[2u] = 0u;
++                  v_bits_unpacked[3u] = 0u;
++                }
++                wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4));
++              }
++            }
++          } else if (v_src_bytes_per_pixel <= ((uint64_t)(v_s.len))) {
++            wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__slice_u8__subslice_j(v_s, v_src_bytes_per_pixel));
++            v_s = wuffs_base__slice_u8__subslice_i(v_s, v_src_bytes_per_pixel);
++          }
++        }
++        v_x += (((uint32_t)(1u)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0u]);
+       }
+-      v_curr.len = 3;
+-      uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3);
+-      while (v_curr.ptr < i_end1_curr) {
+-        v_fa0 = ((uint8_t)((v_fa0 / 2u) + v_curr.ptr[0u]));
+-        v_curr.ptr[0u] = v_fa0;
+-        v_fa1 = ((uint8_t)((v_fa1 / 2u) + v_curr.ptr[1u]));
+-        v_curr.ptr[1u] = v_fa1;
+-        v_fa2 = ((uint8_t)((v_fa2 / 2u) + v_curr.ptr[2u]));
+-        v_curr.ptr[2u] = v_fa2;
+-        v_curr.ptr += 3;
++    } else if (self->private_impl.f_depth < 8u) {
++      v_multiplier = 1u;
++      if (self->private_impl.f_color_type == 0u) {
++        v_multiplier = WUFFS_PNG__LOW_BIT_DEPTH_MULTIPLIERS[self->private_impl.f_depth];
+       }
+-      v_curr.len = 0;
+-    }
+-  } else {
+-    {
+-      wuffs_base__slice_u8 i_slice_curr = a_curr;
+-      v_curr.ptr = i_slice_curr.ptr;
+-      wuffs_base__slice_u8 i_slice_prev = a_prev;
+-      v_prev.ptr = i_slice_prev.ptr;
+-      i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
+-      v_curr.len = 3;
+-      v_prev.len = 3;
+-      uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 6) * 6);
+-      while (v_curr.ptr < i_end0_curr) {
+-        v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0u]))) / 2u))) + v_curr.ptr[0u]));
+-        v_curr.ptr[0u] = v_fa0;
+-        v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1u]))) / 2u))) + v_curr.ptr[1u]));
+-        v_curr.ptr[1u] = v_fa1;
+-        v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2u]))) / 2u))) + v_curr.ptr[2u]));
+-        v_curr.ptr[2u] = v_fa2;
+-        v_curr.ptr += 3;
+-        v_prev.ptr += 3;
+-        v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0u]))) / 2u))) + v_curr.ptr[0u]));
+-        v_curr.ptr[0u] = v_fa0;
+-        v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1u]))) / 2u))) + v_curr.ptr[1u]));
+-        v_curr.ptr[1u] = v_fa1;
+-        v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2u]))) / 2u))) + v_curr.ptr[2u]));
+-        v_curr.ptr[2u] = v_fa2;
+-        v_curr.ptr += 3;
+-        v_prev.ptr += 3;
++      v_shift = ((uint8_t)(((uint8_t)(8u - self->private_impl.f_depth)) & 7u));
++      v_packs_remaining = 0u;
++      while (v_x < self->private_impl.f_frame_rect_x1) {
++        v_i = (((uint64_t)(v_x)) * v_dst_bytes_per_pixel);
++        if (v_i <= ((uint64_t)(v_dst.len))) {
++          if ((v_packs_remaining == 0u) && (1u <= ((uint64_t)(v_s.len)))) {
++            v_packs_remaining = WUFFS_PNG__LOW_BIT_DEPTH_NUM_PACKS[self->private_impl.f_depth];
++            v_bits_packed = v_s.ptr[0u];
++            v_s = wuffs_base__slice_u8__subslice_i(v_s, 1u);
++          }
++          v_bits_unpacked[0u] = ((uint8_t)(((uint8_t)(v_bits_packed >> v_shift)) * v_multiplier));
++          v_bits_packed = ((uint8_t)(v_bits_packed << self->private_impl.f_depth));
++          v_packs_remaining = ((uint8_t)(v_packs_remaining - 1u));
++          if (((uint32_t)(self->private_impl.f_remap_transparency)) != 0u) {
++            v_bits_unpacked[1u] = v_bits_unpacked[0u];
++            v_bits_unpacked[2u] = v_bits_unpacked[0u];
++            v_bits_unpacked[3u] = 255u;
++            if (((uint32_t)(self->private_impl.f_remap_transparency)) == ((((uint32_t)(v_bits_unpacked[0u])) << 0u) |
++                (((uint32_t)(v_bits_unpacked[1u])) << 8u) |
++                (((uint32_t)(v_bits_unpacked[2u])) << 16u) |
++                (((uint32_t)(v_bits_unpacked[3u])) << 24u))) {
++              v_bits_unpacked[0u] = 0u;
++              v_bits_unpacked[1u] = 0u;
++              v_bits_unpacked[2u] = 0u;
++              v_bits_unpacked[3u] = 0u;
++            }
++            wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4));
++          } else {
++            wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 1));
++          }
++        }
++        v_x += (((uint32_t)(1u)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0u]);
+       }
+-      v_curr.len = 3;
+-      v_prev.len = 3;
+-      uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3);
+-      while (v_curr.ptr < i_end1_curr) {
+-        v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0u]))) / 2u))) + v_curr.ptr[0u]));
+-        v_curr.ptr[0u] = v_fa0;
+-        v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1u]))) / 2u))) + v_curr.ptr[1u]));
+-        v_curr.ptr[1u] = v_fa1;
+-        v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2u]))) / 2u))) + v_curr.ptr[2u]));
+-        v_curr.ptr[2u] = v_fa2;
+-        v_curr.ptr += 3;
+-        v_prev.ptr += 3;
++    } else {
++      while (v_x < self->private_impl.f_frame_rect_x1) {
++        v_i = (((uint64_t)(v_x)) * v_dst_bytes_per_pixel);
++        if (v_i <= ((uint64_t)(v_dst.len))) {
++          if (self->private_impl.f_color_type == 0u) {
++            if (2u <= ((uint64_t)(v_s.len))) {
++              v_bits_unpacked[0u] = v_s.ptr[1u];
++              v_bits_unpacked[1u] = v_s.ptr[0u];
++              v_bits_unpacked[2u] = v_s.ptr[1u];
++              v_bits_unpacked[3u] = v_s.ptr[0u];
++              v_bits_unpacked[4u] = v_s.ptr[1u];
++              v_bits_unpacked[5u] = v_s.ptr[0u];
++              v_bits_unpacked[6u] = 255u;
++              v_bits_unpacked[7u] = 255u;
++              v_s = wuffs_base__slice_u8__subslice_i(v_s, 2u);
++              if (self->private_impl.f_remap_transparency == ((((uint64_t)(v_bits_unpacked[0u])) << 0u) |
++                  (((uint64_t)(v_bits_unpacked[1u])) << 8u) |
++                  (((uint64_t)(v_bits_unpacked[2u])) << 16u) |
++                  (((uint64_t)(v_bits_unpacked[3u])) << 24u) |
++                  (((uint64_t)(v_bits_unpacked[4u])) << 32u) |
++                  (((uint64_t)(v_bits_unpacked[5u])) << 40u) |
++                  (((uint64_t)(v_bits_unpacked[6u])) << 48u) |
++                  (((uint64_t)(v_bits_unpacked[7u])) << 56u))) {
++                v_bits_unpacked[0u] = 0u;
++                v_bits_unpacked[1u] = 0u;
++                v_bits_unpacked[2u] = 0u;
++                v_bits_unpacked[3u] = 0u;
++                v_bits_unpacked[4u] = 0u;
++                v_bits_unpacked[5u] = 0u;
++                v_bits_unpacked[6u] = 0u;
++                v_bits_unpacked[7u] = 0u;
++              }
++            }
++          } else if (self->private_impl.f_color_type == 2u) {
++            if (6u <= ((uint64_t)(v_s.len))) {
++              v_bits_unpacked[0u] = v_s.ptr[5u];
++              v_bits_unpacked[1u] = v_s.ptr[4u];
++              v_bits_unpacked[2u] = v_s.ptr[3u];
++              v_bits_unpacked[3u] = v_s.ptr[2u];
++              v_bits_unpacked[4u] = v_s.ptr[1u];
++              v_bits_unpacked[5u] = v_s.ptr[0u];
++              v_bits_unpacked[6u] = 255u;
++              v_bits_unpacked[7u] = 255u;
++              v_s = wuffs_base__slice_u8__subslice_i(v_s, 6u);
++              if (self->private_impl.f_remap_transparency == ((((uint64_t)(v_bits_unpacked[0u])) << 0u) |
++                  (((uint64_t)(v_bits_unpacked[1u])) << 8u) |
++                  (((uint64_t)(v_bits_unpacked[2u])) << 16u) |
++                  (((uint64_t)(v_bits_unpacked[3u])) << 24u) |
++                  (((uint64_t)(v_bits_unpacked[4u])) << 32u) |
++                  (((uint64_t)(v_bits_unpacked[5u])) << 40u) |
++                  (((uint64_t)(v_bits_unpacked[6u])) << 48u) |
++                  (((uint64_t)(v_bits_unpacked[7u])) << 56u))) {
++                v_bits_unpacked[0u] = 0u;
++                v_bits_unpacked[1u] = 0u;
++                v_bits_unpacked[2u] = 0u;
++                v_bits_unpacked[3u] = 0u;
++                v_bits_unpacked[4u] = 0u;
++                v_bits_unpacked[5u] = 0u;
++                v_bits_unpacked[6u] = 0u;
++                v_bits_unpacked[7u] = 0u;
++              }
++            }
++          } else if (self->private_impl.f_color_type == 4u) {
++            if (4u <= ((uint64_t)(v_s.len))) {
++              v_bits_unpacked[0u] = v_s.ptr[1u];
++              v_bits_unpacked[1u] = v_s.ptr[0u];
++              v_bits_unpacked[2u] = v_s.ptr[1u];
++              v_bits_unpacked[3u] = v_s.ptr[0u];
++              v_bits_unpacked[4u] = v_s.ptr[1u];
++              v_bits_unpacked[5u] = v_s.ptr[0u];
++              v_bits_unpacked[6u] = v_s.ptr[3u];
++              v_bits_unpacked[7u] = v_s.ptr[2u];
++              v_s = wuffs_base__slice_u8__subslice_i(v_s, 4u);
++            }
++          } else {
++            if (8u <= ((uint64_t)(v_s.len))) {
++              v_bits_unpacked[0u] = v_s.ptr[5u];
++              v_bits_unpacked[1u] = v_s.ptr[4u];
++              v_bits_unpacked[2u] = v_s.ptr[3u];
++              v_bits_unpacked[3u] = v_s.ptr[2u];
++              v_bits_unpacked[4u] = v_s.ptr[1u];
++              v_bits_unpacked[5u] = v_s.ptr[0u];
++              v_bits_unpacked[6u] = v_s.ptr[7u];
++              v_bits_unpacked[7u] = v_s.ptr[6u];
++              v_s = wuffs_base__slice_u8__subslice_i(v_s, 8u);
++            }
++          }
++          wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 8));
++        }
++        v_x += (((uint32_t)(1u)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0u]);
+       }
+-      v_curr.len = 0;
+-      v_prev.len = 0;
+     }
++    v_prev_row = v_curr_row;
++    v_y += (((uint32_t)(1u)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][3u]);
+   }
+-  return wuffs_base__make_empty_struct();
++  return wuffs_base__make_status(NULL);
+ }
+ 
+-// -------- func png.decoder.filter_3_distance_4_fallback
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG)
++
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__QOI)
++
++// ---------------- Status Codes Implementations
++
++const char wuffs_qoi__error__bad_footer[] = "#qoi: bad footer";
++const char wuffs_qoi__error__bad_header[] = "#qoi: bad header";
++const char wuffs_qoi__error__truncated_input[] = "#qoi: truncated input";
++
++// ---------------- Private Consts
++
++// ---------------- Private Initializer Prototypes
++
++// ---------------- Private Function Prototypes
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_3_distance_4_fallback(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev) {
+-  wuffs_base__slice_u8 v_curr = {0};
+-  wuffs_base__slice_u8 v_prev = {0};
+-  uint8_t v_fa0 = 0;
+-  uint8_t v_fa1 = 0;
+-  uint8_t v_fa2 = 0;
+-  uint8_t v_fa3 = 0;
++static wuffs_base__status
++wuffs_qoi__decoder__do_decode_image_config(
++    wuffs_qoi__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_qoi__decoder__do_decode_frame_config(
++    wuffs_qoi__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_qoi__decoder__do_decode_frame(
++    wuffs_qoi__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_qoi__decoder__from_src_to_buffer(
++    wuffs_qoi__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_qoi__decoder__from_buffer_to_dst(
++    wuffs_qoi__decoder* self,
++    wuffs_base__pixel_buffer* a_dst);
++
++// ---------------- VTables
++
++const wuffs_base__image_decoder__func_ptrs
++wuffs_qoi__decoder__func_ptrs_for__wuffs_base__image_decoder = {
++  (wuffs_base__status(*)(void*,
++      wuffs_base__pixel_buffer*,
++      wuffs_base__io_buffer*,
++      wuffs_base__pixel_blend,
++      wuffs_base__slice_u8,
++      wuffs_base__decode_frame_options*))(&wuffs_qoi__decoder__decode_frame),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__frame_config*,
++      wuffs_base__io_buffer*))(&wuffs_qoi__decoder__decode_frame_config),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__image_config*,
++      wuffs_base__io_buffer*))(&wuffs_qoi__decoder__decode_image_config),
++  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_qoi__decoder__frame_dirty_rect),
++  (uint64_t(*)(const void*,
++      uint32_t))(&wuffs_qoi__decoder__get_quirk),
++  (uint32_t(*)(const void*))(&wuffs_qoi__decoder__num_animation_loops),
++  (uint64_t(*)(const void*))(&wuffs_qoi__decoder__num_decoded_frame_configs),
++  (uint64_t(*)(const void*))(&wuffs_qoi__decoder__num_decoded_frames),
++  (wuffs_base__status(*)(void*,
++      uint64_t,
++      uint64_t))(&wuffs_qoi__decoder__restart_frame),
++  (wuffs_base__status(*)(void*,
++      uint32_t,
++      uint64_t))(&wuffs_qoi__decoder__set_quirk),
++  (wuffs_base__empty_struct(*)(void*,
++      uint32_t,
++      bool))(&wuffs_qoi__decoder__set_report_metadata),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__io_buffer*,
++      wuffs_base__more_information*,
++      wuffs_base__io_buffer*))(&wuffs_qoi__decoder__tell_me_more),
++  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_qoi__decoder__workbuf_len),
++};
++
++// ---------------- Initializer Implementations
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_qoi__decoder__initialize(
++    wuffs_qoi__decoder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options){
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (sizeof(*self) != sizeof_star_self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  }
++  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
++      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++  }
+ 
+-  if (((uint64_t)(a_prev.len)) == 0u) {
+-    {
+-      wuffs_base__slice_u8 i_slice_curr = a_curr;
+-      v_curr.ptr = i_slice_curr.ptr;
+-      v_curr.len = 4;
+-      uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
+-      while (v_curr.ptr < i_end0_curr) {
+-        v_fa0 = ((uint8_t)((v_fa0 / 2u) + v_curr.ptr[0u]));
+-        v_curr.ptr[0u] = v_fa0;
+-        v_fa1 = ((uint8_t)((v_fa1 / 2u) + v_curr.ptr[1u]));
+-        v_curr.ptr[1u] = v_fa1;
+-        v_fa2 = ((uint8_t)((v_fa2 / 2u) + v_curr.ptr[2u]));
+-        v_curr.ptr[2u] = v_fa2;
+-        v_fa3 = ((uint8_t)((v_fa3 / 2u) + v_curr.ptr[3u]));
+-        v_curr.ptr[3u] = v_fa3;
+-        v_curr.ptr += 4;
+-      }
+-      v_curr.len = 0;
++  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
++    // The whole point of this if-check is to detect an uninitialized *self.
++    // We disable the warning on GCC. Clang-5.0 does not have this warning.
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++#endif
++    if (self->private_impl.magic != 0) {
++      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
+     }
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
+   } else {
+-    {
+-      wuffs_base__slice_u8 i_slice_curr = a_curr;
+-      v_curr.ptr = i_slice_curr.ptr;
+-      wuffs_base__slice_u8 i_slice_prev = a_prev;
+-      v_prev.ptr = i_slice_prev.ptr;
+-      i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
+-      v_curr.len = 4;
+-      v_prev.len = 4;
+-      uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
+-      while (v_curr.ptr < i_end0_curr) {
+-        v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0u]))) / 2u))) + v_curr.ptr[0u]));
+-        v_curr.ptr[0u] = v_fa0;
+-        v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1u]))) / 2u))) + v_curr.ptr[1u]));
+-        v_curr.ptr[1u] = v_fa1;
+-        v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2u]))) / 2u))) + v_curr.ptr[2u]));
+-        v_curr.ptr[2u] = v_fa2;
+-        v_fa3 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa3)) + ((uint32_t)(v_prev.ptr[3u]))) / 2u))) + v_curr.ptr[3u]));
+-        v_curr.ptr[3u] = v_fa3;
+-        v_curr.ptr += 4;
+-        v_prev.ptr += 4;
+-      }
+-      v_curr.len = 0;
+-      v_prev.len = 0;
++    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
++      memset(self, 0, sizeof(*self));
++      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
++    } else {
++      memset(&(self->private_impl), 0, sizeof(self->private_impl));
+     }
+   }
+-  return wuffs_base__make_empty_struct();
++
++  self->private_impl.magic = WUFFS_BASE__MAGIC;
++  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
++      wuffs_base__image_decoder__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
++      (const void*)(&wuffs_qoi__decoder__func_ptrs_for__wuffs_base__image_decoder);
++  return wuffs_base__make_status(NULL);
+ }
+ 
+-// -------- func png.decoder.filter_4
++wuffs_qoi__decoder*
++wuffs_qoi__decoder__alloc(void) {
++  wuffs_qoi__decoder* x =
++      (wuffs_qoi__decoder*)(calloc(1, sizeof(wuffs_qoi__decoder)));
++  if (!x) {
++    return NULL;
++  }
++  if (wuffs_qoi__decoder__initialize(
++      x, sizeof(wuffs_qoi__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++    free(x);
++    return NULL;
++  }
++  return x;
++}
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_4(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev) {
+-  return (*self->private_impl.choosy_filter_4)(self, a_curr, a_prev);
++size_t
++sizeof__wuffs_qoi__decoder(void) {
++  return sizeof(wuffs_qoi__decoder);
+ }
+ 
++// ---------------- Function Implementations
++
++// -------- func qoi.decoder.get_quirk
++
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_4__choosy_default(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev) {
+-  uint64_t v_filter_distance = 0;
+-  uint64_t v_n = 0;
+-  uint64_t v_i = 0;
+-  uint32_t v_fa = 0;
+-  uint32_t v_fb = 0;
+-  uint32_t v_fc = 0;
+-  uint32_t v_pp = 0;
+-  uint32_t v_pa = 0;
+-  uint32_t v_pb = 0;
+-  uint32_t v_pc = 0;
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_qoi__decoder__get_quirk(
++    const wuffs_qoi__decoder* self,
++    uint32_t a_key) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
+ 
+-  v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance));
+-  v_n = wuffs_base__u64__min(((uint64_t)(a_curr.len)), ((uint64_t)(a_prev.len)));
+-  v_i = 0u;
+-  while ((v_i < v_n) && (v_i < v_filter_distance)) {
+-    a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + a_prev.ptr[v_i]));
+-    v_i += 1u;
++  return 0u;
++}
++
++// -------- func qoi.decoder.set_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_qoi__decoder__set_quirk(
++    wuffs_qoi__decoder* self,
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+-  v_i = v_filter_distance;
+-  while (v_i < v_n) {
+-    v_fa = ((uint32_t)(a_curr.ptr[(v_i - v_filter_distance)]));
+-    v_fb = ((uint32_t)(a_prev.ptr[v_i]));
+-    v_fc = ((uint32_t)(a_prev.ptr[(v_i - v_filter_distance)]));
+-    v_pp = ((uint32_t)(((uint32_t)(v_fa + v_fb)) - v_fc));
+-    v_pa = ((uint32_t)(v_pp - v_fa));
+-    if (v_pa >= 2147483648u) {
+-      v_pa = ((uint32_t)(0u - v_pa));
+-    }
+-    v_pb = ((uint32_t)(v_pp - v_fb));
+-    if (v_pb >= 2147483648u) {
+-      v_pb = ((uint32_t)(0u - v_pb));
+-    }
+-    v_pc = ((uint32_t)(v_pp - v_fc));
+-    if (v_pc >= 2147483648u) {
+-      v_pc = ((uint32_t)(0u - v_pc));
+-    }
+-    if ((v_pa <= v_pb) && (v_pa <= v_pc)) {
+-    } else if (v_pb <= v_pc) {
+-      v_fa = v_fb;
+-    } else {
+-      v_fa = v_fc;
+-    }
+-    a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + ((uint8_t)(v_fa))));
+-    v_i += 1u;
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
+   }
+-  return wuffs_base__make_empty_struct();
++
++  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
+ }
+ 
+-// -------- func png.decoder.filter_4_distance_3_fallback
++// -------- func qoi.decoder.decode_image_config
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_4_distance_3_fallback(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev) {
+-  wuffs_base__slice_u8 v_curr = {0};
+-  wuffs_base__slice_u8 v_prev = {0};
+-  uint32_t v_fa0 = 0;
+-  uint32_t v_fa1 = 0;
+-  uint32_t v_fa2 = 0;
+-  uint32_t v_fb0 = 0;
+-  uint32_t v_fb1 = 0;
+-  uint32_t v_fb2 = 0;
+-  uint32_t v_fc0 = 0;
+-  uint32_t v_fc1 = 0;
+-  uint32_t v_fc2 = 0;
+-  uint32_t v_pp0 = 0;
+-  uint32_t v_pp1 = 0;
+-  uint32_t v_pp2 = 0;
+-  uint32_t v_pa0 = 0;
+-  uint32_t v_pa1 = 0;
+-  uint32_t v_pa2 = 0;
+-  uint32_t v_pb0 = 0;
+-  uint32_t v_pb1 = 0;
+-  uint32_t v_pb2 = 0;
+-  uint32_t v_pc0 = 0;
+-  uint32_t v_pc1 = 0;
+-  uint32_t v_pc2 = 0;
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_qoi__decoder__decode_image_config(
++    wuffs_qoi__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 1)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  {
+-    wuffs_base__slice_u8 i_slice_curr = a_curr;
+-    v_curr.ptr = i_slice_curr.ptr;
+-    wuffs_base__slice_u8 i_slice_prev = a_prev;
+-    v_prev.ptr = i_slice_prev.ptr;
+-    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
+-    v_curr.len = 3;
+-    v_prev.len = 3;
+-    uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3);
+-    while (v_curr.ptr < i_end0_curr) {
+-      v_fb0 = ((uint32_t)(v_prev.ptr[0u]));
+-      v_pp0 = ((uint32_t)(((uint32_t)(v_fa0 + v_fb0)) - v_fc0));
+-      v_pa0 = ((uint32_t)(v_pp0 - v_fa0));
+-      if (v_pa0 >= 2147483648u) {
+-        v_pa0 = ((uint32_t)(0u - v_pa0));
+-      }
+-      v_pb0 = ((uint32_t)(v_pp0 - v_fb0));
+-      if (v_pb0 >= 2147483648u) {
+-        v_pb0 = ((uint32_t)(0u - v_pb0));
+-      }
+-      v_pc0 = ((uint32_t)(v_pp0 - v_fc0));
+-      if (v_pc0 >= 2147483648u) {
+-        v_pc0 = ((uint32_t)(0u - v_pc0));
+-      }
+-      if ((v_pa0 <= v_pb0) && (v_pa0 <= v_pc0)) {
+-      } else if (v_pb0 <= v_pc0) {
+-        v_fa0 = v_fb0;
+-      } else {
+-        v_fa0 = v_fc0;
+-      }
+-      v_curr.ptr[0u] = ((uint8_t)(v_curr.ptr[0u] + ((uint8_t)(v_fa0))));
+-      v_fa0 = ((uint32_t)(v_curr.ptr[0u]));
+-      v_fc0 = v_fb0;
+-      v_fb1 = ((uint32_t)(v_prev.ptr[1u]));
+-      v_pp1 = ((uint32_t)(((uint32_t)(v_fa1 + v_fb1)) - v_fc1));
+-      v_pa1 = ((uint32_t)(v_pp1 - v_fa1));
+-      if (v_pa1 >= 2147483648u) {
+-        v_pa1 = ((uint32_t)(0u - v_pa1));
+-      }
+-      v_pb1 = ((uint32_t)(v_pp1 - v_fb1));
+-      if (v_pb1 >= 2147483648u) {
+-        v_pb1 = ((uint32_t)(0u - v_pb1));
+-      }
+-      v_pc1 = ((uint32_t)(v_pp1 - v_fc1));
+-      if (v_pc1 >= 2147483648u) {
+-        v_pc1 = ((uint32_t)(0u - v_pc1));
+-      }
+-      if ((v_pa1 <= v_pb1) && (v_pa1 <= v_pc1)) {
+-      } else if (v_pb1 <= v_pc1) {
+-        v_fa1 = v_fb1;
+-      } else {
+-        v_fa1 = v_fc1;
+-      }
+-      v_curr.ptr[1u] = ((uint8_t)(v_curr.ptr[1u] + ((uint8_t)(v_fa1))));
+-      v_fa1 = ((uint32_t)(v_curr.ptr[1u]));
+-      v_fc1 = v_fb1;
+-      v_fb2 = ((uint32_t)(v_prev.ptr[2u]));
+-      v_pp2 = ((uint32_t)(((uint32_t)(v_fa2 + v_fb2)) - v_fc2));
+-      v_pa2 = ((uint32_t)(v_pp2 - v_fa2));
+-      if (v_pa2 >= 2147483648u) {
+-        v_pa2 = ((uint32_t)(0u - v_pa2));
+-      }
+-      v_pb2 = ((uint32_t)(v_pp2 - v_fb2));
+-      if (v_pb2 >= 2147483648u) {
+-        v_pb2 = ((uint32_t)(0u - v_pb2));
+-      }
+-      v_pc2 = ((uint32_t)(v_pp2 - v_fc2));
+-      if (v_pc2 >= 2147483648u) {
+-        v_pc2 = ((uint32_t)(0u - v_pc2));
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_image_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_qoi__decoder__do_decode_image_config(self, a_dst, a_src);
++        v_status = t_0;
+       }
+-      if ((v_pa2 <= v_pb2) && (v_pa2 <= v_pc2)) {
+-      } else if (v_pb2 <= v_pc2) {
+-        v_fa2 = v_fb2;
+-      } else {
+-        v_fa2 = v_fc2;
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_qoi__error__truncated_input);
++        goto exit;
+       }
+-      v_curr.ptr[2u] = ((uint8_t)(v_curr.ptr[2u] + ((uint8_t)(v_fa2))));
+-      v_fa2 = ((uint32_t)(v_curr.ptr[2u]));
+-      v_fc2 = v_fb2;
+-      v_curr.ptr += 3;
+-      v_prev.ptr += 3;
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+     }
+-    v_curr.len = 0;
+-    v_prev.len = 0;
++
++    ok:
++    self->private_impl.p_decode_image_config = 0;
++    goto exit;
+   }
+-  return wuffs_base__make_empty_struct();
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
+ }
+ 
+-// -------- func png.decoder.filter_4_distance_4_fallback
++// -------- func qoi.decoder.do_decode_image_config
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_4_distance_4_fallback(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev) {
+-  wuffs_base__slice_u8 v_curr = {0};
+-  wuffs_base__slice_u8 v_prev = {0};
+-  uint32_t v_fa0 = 0;
+-  uint32_t v_fa1 = 0;
+-  uint32_t v_fa2 = 0;
+-  uint32_t v_fa3 = 0;
+-  uint32_t v_fb0 = 0;
+-  uint32_t v_fb1 = 0;
+-  uint32_t v_fb2 = 0;
+-  uint32_t v_fb3 = 0;
+-  uint32_t v_fc0 = 0;
+-  uint32_t v_fc1 = 0;
+-  uint32_t v_fc2 = 0;
+-  uint32_t v_fc3 = 0;
+-  uint32_t v_pp0 = 0;
+-  uint32_t v_pp1 = 0;
+-  uint32_t v_pp2 = 0;
+-  uint32_t v_pp3 = 0;
+-  uint32_t v_pa0 = 0;
+-  uint32_t v_pa1 = 0;
+-  uint32_t v_pa2 = 0;
+-  uint32_t v_pa3 = 0;
+-  uint32_t v_pb0 = 0;
+-  uint32_t v_pb1 = 0;
+-  uint32_t v_pb2 = 0;
+-  uint32_t v_pb3 = 0;
+-  uint32_t v_pc0 = 0;
+-  uint32_t v_pc1 = 0;
+-  uint32_t v_pc2 = 0;
+-  uint32_t v_pc3 = 0;
++static wuffs_base__status
++wuffs_qoi__decoder__do_decode_image_config(
++    wuffs_qoi__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  {
+-    wuffs_base__slice_u8 i_slice_curr = a_curr;
+-    v_curr.ptr = i_slice_curr.ptr;
+-    wuffs_base__slice_u8 i_slice_prev = a_prev;
+-    v_prev.ptr = i_slice_prev.ptr;
+-    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
+-    v_curr.len = 4;
+-    v_prev.len = 4;
+-    uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
+-    while (v_curr.ptr < i_end0_curr) {
+-      v_fb0 = ((uint32_t)(v_prev.ptr[0u]));
+-      v_pp0 = ((uint32_t)(((uint32_t)(v_fa0 + v_fb0)) - v_fc0));
+-      v_pa0 = ((uint32_t)(v_pp0 - v_fa0));
+-      if (v_pa0 >= 2147483648u) {
+-        v_pa0 = ((uint32_t)(0u - v_pa0));
+-      }
+-      v_pb0 = ((uint32_t)(v_pp0 - v_fb0));
+-      if (v_pb0 >= 2147483648u) {
+-        v_pb0 = ((uint32_t)(0u - v_pb0));
+-      }
+-      v_pc0 = ((uint32_t)(v_pp0 - v_fc0));
+-      if (v_pc0 >= 2147483648u) {
+-        v_pc0 = ((uint32_t)(0u - v_pc0));
+-      }
+-      if ((v_pa0 <= v_pb0) && (v_pa0 <= v_pc0)) {
+-      } else if (v_pb0 <= v_pc0) {
+-        v_fa0 = v_fb0;
+-      } else {
+-        v_fa0 = v_fc0;
+-      }
+-      v_curr.ptr[0u] = ((uint8_t)(v_curr.ptr[0u] + ((uint8_t)(v_fa0))));
+-      v_fa0 = ((uint32_t)(v_curr.ptr[0u]));
+-      v_fc0 = v_fb0;
+-      v_fb1 = ((uint32_t)(v_prev.ptr[1u]));
+-      v_pp1 = ((uint32_t)(((uint32_t)(v_fa1 + v_fb1)) - v_fc1));
+-      v_pa1 = ((uint32_t)(v_pp1 - v_fa1));
+-      if (v_pa1 >= 2147483648u) {
+-        v_pa1 = ((uint32_t)(0u - v_pa1));
+-      }
+-      v_pb1 = ((uint32_t)(v_pp1 - v_fb1));
+-      if (v_pb1 >= 2147483648u) {
+-        v_pb1 = ((uint32_t)(0u - v_pb1));
+-      }
+-      v_pc1 = ((uint32_t)(v_pp1 - v_fc1));
+-      if (v_pc1 >= 2147483648u) {
+-        v_pc1 = ((uint32_t)(0u - v_pc1));
+-      }
+-      if ((v_pa1 <= v_pb1) && (v_pa1 <= v_pc1)) {
+-      } else if (v_pb1 <= v_pc1) {
+-        v_fa1 = v_fb1;
++  uint32_t v_a = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_call_sequence != 0u) {
++      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++      goto exit;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      uint32_t t_0;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
+       } else {
+-        v_fa1 = v_fc1;
+-      }
+-      v_curr.ptr[1u] = ((uint8_t)(v_curr.ptr[1u] + ((uint8_t)(v_fa1))));
+-      v_fa1 = ((uint32_t)(v_curr.ptr[1u]));
+-      v_fc1 = v_fb1;
+-      v_fb2 = ((uint32_t)(v_prev.ptr[2u]));
+-      v_pp2 = ((uint32_t)(((uint32_t)(v_fa2 + v_fb2)) - v_fc2));
+-      v_pa2 = ((uint32_t)(v_pp2 - v_fa2));
+-      if (v_pa2 >= 2147483648u) {
+-        v_pa2 = ((uint32_t)(0u - v_pa2));
+-      }
+-      v_pb2 = ((uint32_t)(v_pp2 - v_fb2));
+-      if (v_pb2 >= 2147483648u) {
+-        v_pb2 = ((uint32_t)(0u - v_pb2));
+-      }
+-      v_pc2 = ((uint32_t)(v_pp2 - v_fc2));
+-      if (v_pc2 >= 2147483648u) {
+-        v_pc2 = ((uint32_t)(0u - v_pc2));
++        self->private_data.s_do_decode_image_config.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
++          *scratch <<= 8;
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
++          if (num_bits_0 == 24) {
++            t_0 = ((uint32_t)(*scratch));
++            break;
++          }
++          num_bits_0 += 8u;
++          *scratch |= ((uint64_t)(num_bits_0)) << 56;
++        }
+       }
+-      if ((v_pa2 <= v_pb2) && (v_pa2 <= v_pc2)) {
+-      } else if (v_pb2 <= v_pc2) {
+-        v_fa2 = v_fb2;
++      v_a = t_0;
++    }
++    if (v_a != 1718185841u) {
++      status = wuffs_base__make_status(wuffs_qoi__error__bad_header);
++      goto exit;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++      uint32_t t_1;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
+       } else {
+-        v_fa2 = v_fc2;
+-      }
+-      v_curr.ptr[2u] = ((uint8_t)(v_curr.ptr[2u] + ((uint8_t)(v_fa2))));
+-      v_fa2 = ((uint32_t)(v_curr.ptr[2u]));
+-      v_fc2 = v_fb2;
+-      v_fb3 = ((uint32_t)(v_prev.ptr[3u]));
+-      v_pp3 = ((uint32_t)(((uint32_t)(v_fa3 + v_fb3)) - v_fc3));
+-      v_pa3 = ((uint32_t)(v_pp3 - v_fa3));
+-      if (v_pa3 >= 2147483648u) {
+-        v_pa3 = ((uint32_t)(0u - v_pa3));
+-      }
+-      v_pb3 = ((uint32_t)(v_pp3 - v_fb3));
+-      if (v_pb3 >= 2147483648u) {
+-        v_pb3 = ((uint32_t)(0u - v_pb3));
+-      }
+-      v_pc3 = ((uint32_t)(v_pp3 - v_fc3));
+-      if (v_pc3 >= 2147483648u) {
+-        v_pc3 = ((uint32_t)(0u - v_pc3));
++        self->private_data.s_do_decode_image_config.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++          uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
++          *scratch >>= 8;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
++          if (num_bits_1 == 24) {
++            t_1 = ((uint32_t)(*scratch >> 32));
++            break;
++          }
++          num_bits_1 += 8u;
++          *scratch |= ((uint64_t)(num_bits_1));
++        }
+       }
+-      if ((v_pa3 <= v_pb3) && (v_pa3 <= v_pc3)) {
+-      } else if (v_pb3 <= v_pc3) {
+-        v_fa3 = v_fb3;
++      v_a = t_1;
++    }
++    if (v_a > 16777215u) {
++      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
++      goto exit;
++    }
++    self->private_impl.f_width = v_a;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++      uint32_t t_2;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_2 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
+       } else {
+-        v_fa3 = v_fc3;
++        self->private_data.s_do_decode_image_config.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++          uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu));
++          *scratch >>= 8;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
++          if (num_bits_2 == 24) {
++            t_2 = ((uint32_t)(*scratch >> 32));
++            break;
++          }
++          num_bits_2 += 8u;
++          *scratch |= ((uint64_t)(num_bits_2));
++        }
+       }
+-      v_curr.ptr[3u] = ((uint8_t)(v_curr.ptr[3u] + ((uint8_t)(v_fa3))));
+-      v_fa3 = ((uint32_t)(v_curr.ptr[3u]));
+-      v_fc3 = v_fb3;
+-      v_curr.ptr += 4;
+-      v_prev.ptr += 4;
++      v_a = t_2;
+     }
+-    v_curr.len = 0;
+-    v_prev.len = 0;
+-  }
+-  return wuffs_base__make_empty_struct();
+-}
++    if (v_a > 16777215u) {
++      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
++      goto exit;
++    }
++    self->private_impl.f_height = v_a;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint32_t t_3 = *iop_a_src++;
++      v_a = t_3;
++    }
++    if (v_a == 3u) {
++      self->private_impl.f_pixfmt = 2415954056u;
++    } else if (v_a == 4u) {
++      self->private_impl.f_pixfmt = 2164295816u;
++    } else {
++      status = wuffs_base__make_status(wuffs_qoi__error__bad_header);
++      goto exit;
++    }
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++    if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++      goto suspend;
++    }
++    iop_a_src++;
++    if (a_dst != NULL) {
++      wuffs_base__image_config__set(
++          a_dst,
++          self->private_impl.f_pixfmt,
++          0u,
++          self->private_impl.f_width,
++          self->private_impl.f_height,
++          14u,
++          (self->private_impl.f_pixfmt == 2415954056u));
++    }
++    self->private_impl.f_call_sequence = 32u;
+ 
+-// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
+-// -------- func png.decoder.filter_1_distance_4_x86_sse42
++    goto ok;
++    ok:
++    self->private_impl.p_do_decode_image_config = 0;
++    goto exit;
++  }
+ 
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_1_distance_4_x86_sse42(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr) {
+-  wuffs_base__slice_u8 v_curr = {0};
+-  __m128i v_x128 = {0};
+-  __m128i v_a128 = {0};
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+-  {
+-    wuffs_base__slice_u8 i_slice_curr = a_curr;
+-    v_curr.ptr = i_slice_curr.ptr;
+-    v_curr.len = 4;
+-    uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
+-    while (v_curr.ptr < i_end0_curr) {
+-      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-      v_x128 = _mm_add_epi8(v_x128, v_a128);
+-      v_a128 = v_x128;
+-      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
+-      v_curr.ptr += 4;
+-      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-      v_x128 = _mm_add_epi8(v_x128, v_a128);
+-      v_a128 = v_x128;
+-      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
+-      v_curr.ptr += 4;
+-    }
+-    v_curr.len = 4;
+-    uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
+-    while (v_curr.ptr < i_end1_curr) {
+-      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-      v_x128 = _mm_add_epi8(v_x128, v_a128);
+-      v_a128 = v_x128;
+-      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
+-      v_curr.ptr += 4;
+-    }
+-    v_curr.len = 0;
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+-  return wuffs_base__make_empty_struct();
++
++  return status;
+ }
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
+ 
+-// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
+-// -------- func png.decoder.filter_3_distance_4_x86_sse42
++// -------- func qoi.decoder.decode_frame_config
+ 
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_3_distance_4_x86_sse42(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev) {
+-  wuffs_base__slice_u8 v_curr = {0};
+-  wuffs_base__slice_u8 v_prev = {0};
+-  __m128i v_x128 = {0};
+-  __m128i v_a128 = {0};
+-  __m128i v_b128 = {0};
+-  __m128i v_p128 = {0};
+-  __m128i v_k128 = {0};
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_qoi__decoder__decode_frame_config(
++    wuffs_qoi__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 2)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  if (((uint64_t)(a_prev.len)) == 0u) {
+-    v_k128 = _mm_set1_epi8((int8_t)(254u));
+-    {
+-      wuffs_base__slice_u8 i_slice_curr = a_curr;
+-      v_curr.ptr = i_slice_curr.ptr;
+-      v_curr.len = 4;
+-      uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
+-      while (v_curr.ptr < i_end0_curr) {
+-        v_p128 = _mm_avg_epu8(_mm_and_si128(v_a128, v_k128), v_b128);
+-        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-        v_x128 = _mm_add_epi8(v_x128, v_p128);
+-        v_a128 = v_x128;
+-        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
+-        v_curr.ptr += 4;
+-        v_p128 = _mm_avg_epu8(_mm_and_si128(v_a128, v_k128), v_b128);
+-        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-        v_x128 = _mm_add_epi8(v_x128, v_p128);
+-        v_a128 = v_x128;
+-        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
+-        v_curr.ptr += 4;
+-      }
+-      v_curr.len = 4;
+-      uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
+-      while (v_curr.ptr < i_end1_curr) {
+-        v_p128 = _mm_avg_epu8(_mm_and_si128(v_a128, v_k128), v_b128);
+-        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-        v_x128 = _mm_add_epi8(v_x128, v_p128);
+-        v_a128 = v_x128;
+-        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
+-        v_curr.ptr += 4;
+-      }
+-      v_curr.len = 0;
+-    }
+-  } else {
+-    v_k128 = _mm_set1_epi8((int8_t)(1u));
+-    {
+-      wuffs_base__slice_u8 i_slice_curr = a_curr;
+-      v_curr.ptr = i_slice_curr.ptr;
+-      wuffs_base__slice_u8 i_slice_prev = a_prev;
+-      v_prev.ptr = i_slice_prev.ptr;
+-      i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
+-      v_curr.len = 4;
+-      v_prev.len = 4;
+-      uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
+-      while (v_curr.ptr < i_end0_curr) {
+-        v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
+-        v_p128 = _mm_avg_epu8(v_a128, v_b128);
+-        v_p128 = _mm_sub_epi8(v_p128, _mm_and_si128(v_k128, _mm_xor_si128(v_a128, v_b128)));
+-        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-        v_x128 = _mm_add_epi8(v_x128, v_p128);
+-        v_a128 = v_x128;
+-        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
+-        v_curr.ptr += 4;
+-        v_prev.ptr += 4;
+-        v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
+-        v_p128 = _mm_avg_epu8(v_a128, v_b128);
+-        v_p128 = _mm_sub_epi8(v_p128, _mm_and_si128(v_k128, _mm_xor_si128(v_a128, v_b128)));
+-        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-        v_x128 = _mm_add_epi8(v_x128, v_p128);
+-        v_a128 = v_x128;
+-        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
+-        v_curr.ptr += 4;
+-        v_prev.ptr += 4;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_qoi__decoder__do_decode_frame_config(self, a_dst, a_src);
++        v_status = t_0;
+       }
+-      v_curr.len = 4;
+-      v_prev.len = 4;
+-      uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
+-      while (v_curr.ptr < i_end1_curr) {
+-        v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
+-        v_p128 = _mm_avg_epu8(v_a128, v_b128);
+-        v_p128 = _mm_sub_epi8(v_p128, _mm_and_si128(v_k128, _mm_xor_si128(v_a128, v_b128)));
+-        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-        v_x128 = _mm_add_epi8(v_x128, v_p128);
+-        v_a128 = v_x128;
+-        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
+-        v_curr.ptr += 4;
+-        v_prev.ptr += 4;
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_qoi__error__truncated_input);
++        goto exit;
+       }
+-      v_curr.len = 0;
+-      v_prev.len = 0;
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+     }
+-  }
+-  return wuffs_base__make_empty_struct();
+-}
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
+ 
+-// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
+-// -------- func png.decoder.filter_4_distance_3_x86_sse42
++    ok:
++    self->private_impl.p_decode_frame_config = 0;
++    goto exit;
++  }
+ 
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_4_distance_3_x86_sse42(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev) {
+-  wuffs_base__slice_u8 v_curr = {0};
+-  wuffs_base__slice_u8 v_prev = {0};
+-  __m128i v_x128 = {0};
+-  __m128i v_a128 = {0};
+-  __m128i v_b128 = {0};
+-  __m128i v_c128 = {0};
+-  __m128i v_p128 = {0};
+-  __m128i v_pa128 = {0};
+-  __m128i v_pb128 = {0};
+-  __m128i v_pc128 = {0};
+-  __m128i v_smallest128 = {0};
+-  __m128i v_z128 = {0};
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
+ 
+-  {
+-    wuffs_base__slice_u8 i_slice_curr = a_curr;
+-    v_curr.ptr = i_slice_curr.ptr;
+-    wuffs_base__slice_u8 i_slice_prev = a_prev;
+-    v_prev.ptr = i_slice_prev.ptr;
+-    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
+-    v_curr.len = 4;
+-    v_prev.len = 4;
+-    uint8_t* i_end0_curr = v_curr.ptr + wuffs_base__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 7, 6);
+-    while (v_curr.ptr < i_end0_curr) {
+-      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
+-      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
+-      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
+-      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
+-      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
+-      v_pa128 = _mm_abs_epi16(v_pa128);
+-      v_pb128 = _mm_abs_epi16(v_pb128);
+-      v_pc128 = _mm_abs_epi16(v_pc128);
+-      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
+-      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
+-      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
+-      v_x128 = _mm_add_epi8(v_x128, v_p128);
+-      v_a128 = v_x128;
+-      v_c128 = v_b128;
+-      v_x128 = _mm_packus_epi16(v_x128, v_x128);
+-      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
+-      v_curr.ptr += 3;
+-      v_prev.ptr += 3;
+-      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
+-      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
+-      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
+-      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
+-      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
+-      v_pa128 = _mm_abs_epi16(v_pa128);
+-      v_pb128 = _mm_abs_epi16(v_pb128);
+-      v_pc128 = _mm_abs_epi16(v_pc128);
+-      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
+-      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
+-      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
+-      v_x128 = _mm_add_epi8(v_x128, v_p128);
+-      v_a128 = v_x128;
+-      v_c128 = v_b128;
+-      v_x128 = _mm_packus_epi16(v_x128, v_x128);
+-      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
+-      v_curr.ptr += 3;
+-      v_prev.ptr += 3;
+-    }
+-    v_curr.len = 4;
+-    v_prev.len = 4;
+-    uint8_t* i_end1_curr = v_curr.ptr + wuffs_base__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 4, 3);
+-    while (v_curr.ptr < i_end1_curr) {
+-      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
+-      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
+-      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
+-      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
+-      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
+-      v_pa128 = _mm_abs_epi16(v_pa128);
+-      v_pb128 = _mm_abs_epi16(v_pb128);
+-      v_pc128 = _mm_abs_epi16(v_pc128);
+-      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
+-      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
+-      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
+-      v_x128 = _mm_add_epi8(v_x128, v_p128);
+-      v_a128 = v_x128;
+-      v_c128 = v_b128;
+-      v_x128 = _mm_packus_epi16(v_x128, v_x128);
+-      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
+-      v_curr.ptr += 3;
+-      v_prev.ptr += 3;
+-    }
+-    v_curr.len = 3;
+-    v_prev.len = 3;
+-    uint8_t* i_end2_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3);
+-    while (v_curr.ptr < i_end2_curr) {
+-      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u24le__no_bounds_check(v_prev.ptr)));
+-      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
+-      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
+-      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
+-      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
+-      v_pa128 = _mm_abs_epi16(v_pa128);
+-      v_pb128 = _mm_abs_epi16(v_pb128);
+-      v_pc128 = _mm_abs_epi16(v_pc128);
+-      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
+-      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
+-      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u24le__no_bounds_check(v_curr.ptr)));
+-      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
+-      v_x128 = _mm_add_epi8(v_x128, v_p128);
+-      v_x128 = _mm_packus_epi16(v_x128, v_x128);
+-      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
+-      v_curr.ptr += 3;
+-      v_prev.ptr += 3;
+-    }
+-    v_curr.len = 0;
+-    v_prev.len = 0;
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
+   }
+-  return wuffs_base__make_empty_struct();
++  return status;
+ }
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
+ 
+-// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
+-// -------- func png.decoder.filter_4_distance_4_x86_sse42
++// -------- func qoi.decoder.do_decode_frame_config
+ 
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_png__decoder__filter_4_distance_4_x86_sse42(
+-    wuffs_png__decoder* self,
+-    wuffs_base__slice_u8 a_curr,
+-    wuffs_base__slice_u8 a_prev) {
+-  wuffs_base__slice_u8 v_curr = {0};
+-  wuffs_base__slice_u8 v_prev = {0};
+-  __m128i v_x128 = {0};
+-  __m128i v_a128 = {0};
+-  __m128i v_b128 = {0};
+-  __m128i v_c128 = {0};
+-  __m128i v_p128 = {0};
+-  __m128i v_pa128 = {0};
+-  __m128i v_pb128 = {0};
+-  __m128i v_pc128 = {0};
+-  __m128i v_smallest128 = {0};
+-  __m128i v_z128 = {0};
++static wuffs_base__status
++wuffs_qoi__decoder__do_decode_frame_config(
++    wuffs_qoi__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  {
+-    wuffs_base__slice_u8 i_slice_curr = a_curr;
+-    v_curr.ptr = i_slice_curr.ptr;
+-    wuffs_base__slice_u8 i_slice_prev = a_prev;
+-    v_prev.ptr = i_slice_prev.ptr;
+-    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
+-    v_curr.len = 4;
+-    v_prev.len = 4;
+-    uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
+-    while (v_curr.ptr < i_end0_curr) {
+-      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
+-      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
+-      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
+-      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
+-      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
+-      v_pa128 = _mm_abs_epi16(v_pa128);
+-      v_pb128 = _mm_abs_epi16(v_pb128);
+-      v_pc128 = _mm_abs_epi16(v_pc128);
+-      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
+-      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
+-      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
+-      v_x128 = _mm_add_epi8(v_x128, v_p128);
+-      v_a128 = v_x128;
+-      v_c128 = v_b128;
+-      v_x128 = _mm_packus_epi16(v_x128, v_x128);
+-      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
+-      v_curr.ptr += 4;
+-      v_prev.ptr += 4;
+-      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
+-      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
+-      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
+-      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
+-      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
+-      v_pa128 = _mm_abs_epi16(v_pa128);
+-      v_pb128 = _mm_abs_epi16(v_pb128);
+-      v_pc128 = _mm_abs_epi16(v_pc128);
+-      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
+-      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
+-      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
+-      v_x128 = _mm_add_epi8(v_x128, v_p128);
+-      v_a128 = v_x128;
+-      v_c128 = v_b128;
+-      v_x128 = _mm_packus_epi16(v_x128, v_x128);
+-      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
+-      v_curr.ptr += 4;
+-      v_prev.ptr += 4;
+-    }
+-    v_curr.len = 4;
+-    v_prev.len = 4;
+-    uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
+-    while (v_curr.ptr < i_end1_curr) {
+-      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
+-      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
+-      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
+-      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
+-      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
+-      v_pa128 = _mm_abs_epi16(v_pa128);
+-      v_pb128 = _mm_abs_epi16(v_pb128);
+-      v_pc128 = _mm_abs_epi16(v_pc128);
+-      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
+-      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
+-      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
+-      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
+-      v_x128 = _mm_add_epi8(v_x128, v_p128);
+-      v_a128 = v_x128;
+-      v_c128 = v_b128;
+-      v_x128 = _mm_packus_epi16(v_x128, v_x128);
+-      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
+-      v_curr.ptr += 4;
+-      v_prev.ptr += 4;
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_call_sequence == 32u) {
++    } else if (self->private_impl.f_call_sequence < 32u) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      status = wuffs_qoi__decoder__do_decode_image_config(self, NULL, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++    } else if (self->private_impl.f_call_sequence == 40u) {
++      if (16u != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
++        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
++        goto exit;
++      }
++    } else if (self->private_impl.f_call_sequence == 64u) {
++      self->private_impl.f_call_sequence = 96u;
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
++    } else {
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
+     }
+-    v_curr.len = 0;
+-    v_prev.len = 0;
+-  }
+-  return wuffs_base__make_empty_struct();
+-}
+-#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
+-
+-// -------- func png.decoder.get_quirk
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_png__decoder__get_quirk(
+-    const wuffs_png__decoder* self,
+-    uint32_t a_key) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
++    if (a_dst != NULL) {
++      wuffs_base__frame_config__set(
++          a_dst,
++          wuffs_base__utility__make_rect_ie_u32(
++          0u,
++          0u,
++          self->private_impl.f_width,
++          self->private_impl.f_height),
++          ((wuffs_base__flicks)(0u)),
++          0u,
++          14u,
++          0u,
++          (self->private_impl.f_pixfmt == 2415954056u),
++          false,
++          0u);
++    }
++    self->private_impl.f_call_sequence = 64u;
+ 
+-  if ((a_key == 1u) && self->private_impl.f_ignore_checksum) {
+-    return 1u;
++    ok:
++    self->private_impl.p_do_decode_frame_config = 0;
++    goto exit;
+   }
+-  return 0u;
+-}
+ 
+-// -------- func png.decoder.set_quirk
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_png__decoder__set_quirk(
+-    wuffs_png__decoder* self,
+-    uint32_t a_key,
+-    uint64_t a_value) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+ 
+-  if (a_key == 1u) {
+-    self->private_impl.f_ignore_checksum = (a_value > 0u);
+-    wuffs_zlib__decoder__set_quirk(&self->private_data.f_zlib, a_key, a_value);
+-    return wuffs_base__make_status(NULL);
+-  }
+-  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++  return status;
+ }
+ 
+-// -------- func png.decoder.decode_image_config
++// -------- func qoi.decoder.decode_frame
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_png__decoder__decode_image_config(
+-    wuffs_png__decoder* self,
+-    wuffs_base__image_config* a_dst,
+-    wuffs_base__io_buffer* a_src) {
++wuffs_qoi__decoder__decode_frame(
++    wuffs_qoi__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts) {
+   if (!self) {
+     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+@@ -54464,12 +67805,12 @@ wuffs_png__decoder__decode_image_config(
+         ? wuffs_base__error__disabled_by_previous_error
+         : wuffs_base__error__initialize_not_called);
+   }
+-  if (!a_src) {
++  if (!a_dst || !a_src) {
+     self->private_impl.magic = WUFFS_BASE__DISABLED;
+     return wuffs_base__make_status(wuffs_base__error__bad_argument);
+   }
+   if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 1)) {
++      (self->private_impl.active_coroutine != 3)) {
+     self->private_impl.magic = WUFFS_BASE__DISABLED;
+     return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+   }
+@@ -54478,17 +67819,22 @@ wuffs_png__decoder__decode_image_config(
+ 
+   wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_frame;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+     while (true) {
+       {
+-        wuffs_base__status t_0 = wuffs_png__decoder__do_decode_image_config(self, a_dst, a_src);
++        wuffs_base__status t_0 = wuffs_qoi__decoder__do_decode_frame(self,
++            a_dst,
++            a_src,
++            a_blend,
++            a_workbuf,
++            a_opts);
+         v_status = t_0;
+       }
+       if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_png__error__truncated_input);
++        status = wuffs_base__make_status(wuffs_qoi__error__truncated_input);
+         goto exit;
+       }
+       status = v_status;
+@@ -54496,14 +67842,14 @@ wuffs_png__decoder__decode_image_config(
+     }
+ 
+     ok:
+-    self->private_impl.p_decode_image_config[0] = 0;
++    self->private_impl.p_decode_frame = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
++  self->private_impl.p_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
+ 
+   goto exit;
+   exit:
+@@ -54513,21 +67859,21 @@ wuffs_png__decoder__decode_image_config(
+   return status;
+ }
+ 
+-// -------- func png.decoder.do_decode_image_config
++// -------- func qoi.decoder.do_decode_frame
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_png__decoder__do_decode_image_config(
+-    wuffs_png__decoder* self,
+-    wuffs_base__image_config* a_dst,
+-    wuffs_base__io_buffer* a_src) {
++wuffs_qoi__decoder__do_decode_frame(
++    wuffs_qoi__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint64_t v_magic = 0;
+-  uint64_t v_mark = 0;
+-  uint32_t v_checksum_have = 0;
+-  uint32_t v_checksum_want = 0;
+   wuffs_base__status v_status = wuffs_base__make_status(NULL);
++  uint64_t v_c64 = 0;
+ 
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -54540,281 +67886,332 @@ wuffs_png__decoder__do_decode_image_config(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0];
+-  if (coro_susp_point) {
+-    v_checksum_have = self->private_data.s_do_decode_image_config[0].v_checksum_have;
+-  }
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if (self->private_impl.f_call_sequence != 0u) {
+-      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
+-      goto exit;
+-    } else if ( ! self->private_impl.f_seen_ihdr) {
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-        uint64_t t_0;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
+-          t_0 = wuffs_base__peek_u64le__no_bounds_check(iop_a_src);
+-          iop_a_src += 8;
+-        } else {
+-          self->private_data.s_do_decode_image_config[0].scratch = 0;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-            uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
+-            *scratch <<= 8;
+-            *scratch >>= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
+-            if (num_bits_0 == 56) {
+-              t_0 = ((uint64_t)(*scratch));
+-              break;
+-            }
+-            num_bits_0 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_0)) << 56;
+-          }
+-        }
+-        v_magic = t_0;
++    if (self->private_impl.f_call_sequence == 64u) {
++    } else if (self->private_impl.f_call_sequence < 64u) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+       }
+-      if (v_magic != 727905341920923785u) {
+-        status = wuffs_base__make_status(wuffs_png__error__bad_header);
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      status = wuffs_qoi__decoder__do_decode_frame_config(self, NULL, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++    } else {
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
++    }
++    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
++        wuffs_base__pixel_buffer__pixel_format(a_dst),
++        wuffs_base__pixel_buffer__palette(a_dst),
++        wuffs_base__utility__make_pixel_format(self->private_impl.f_pixfmt),
++        wuffs_base__utility__empty_slice_u8(),
++        a_blend);
++    if ( ! wuffs_base__status__is_ok(&v_status)) {
++      status = v_status;
++      if (wuffs_base__status__is_error(&status)) {
++        goto exit;
++      } else if (wuffs_base__status__is_suspension(&status)) {
++        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
+         goto exit;
+       }
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-        uint64_t t_1;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
+-          t_1 = wuffs_base__peek_u64le__no_bounds_check(iop_a_src);
+-          iop_a_src += 8;
+-        } else {
+-          self->private_data.s_do_decode_image_config[0].scratch = 0;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-            uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
+-            *scratch <<= 8;
+-            *scratch >>= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
+-            if (num_bits_1 == 56) {
+-              t_1 = ((uint64_t)(*scratch));
+-              break;
+-            }
+-            num_bits_1 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_1)) << 56;
+-          }
+-        }
+-        v_magic = t_1;
++      goto ok;
++    }
++    self->private_impl.f_dst_x = 0u;
++    self->private_impl.f_dst_y = 0u;
++    self->private_data.f_pixel[0u] = 0u;
++    self->private_data.f_pixel[1u] = 0u;
++    self->private_data.f_pixel[2u] = 0u;
++    self->private_data.f_pixel[3u] = 255u;
++    wuffs_private_impl__bulk_memset(&self->private_data.f_cache[0], 256u, 0u);
++    self->private_impl.f_remaining_pixels_times_4 = (((uint64_t)(self->private_impl.f_width)) * ((uint64_t)(self->private_impl.f_height)) * 4u);
++    while (self->private_impl.f_remaining_pixels_times_4 > 0u) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+       }
+-      if (v_magic != 5927942488114331648u) {
+-        if (v_magic == 5278895250759221248u) {
+-          status = wuffs_base__make_status(wuffs_png__error__unsupported_cgbi_extension);
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++      status = wuffs_qoi__decoder__from_src_to_buffer(self, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++      if (self->private_impl.f_remaining_pixels_times_4 < ((uint64_t)(self->private_impl.f_buffer_index))) {
++        status = wuffs_base__make_status(wuffs_base__error__too_much_data);
++        goto exit;
++      }
++      self->private_impl.f_remaining_pixels_times_4 -= ((uint64_t)(self->private_impl.f_buffer_index));
++      v_status = wuffs_qoi__decoder__from_buffer_to_dst(self, a_dst);
++      if ( ! wuffs_base__status__is_ok(&v_status)) {
++        status = v_status;
++        if (wuffs_base__status__is_error(&status)) {
++          goto exit;
++        } else if (wuffs_base__status__is_suspension(&status)) {
++          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
+           goto exit;
+         }
+-        status = wuffs_base__make_status(wuffs_png__error__bad_header);
+-        goto exit;
++        goto ok;
+       }
+-      self->private_impl.f_chunk_type_array[0u] = 73u;
+-      self->private_impl.f_chunk_type_array[1u] = 72u;
+-      self->private_impl.f_chunk_type_array[2u] = 68u;
+-      self->private_impl.f_chunk_type_array[3u] = 82u;
+-      wuffs_base__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
+-          sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
+-      wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4));
+-      while (true) {
+-        v_mark = ((uint64_t)(iop_a_src - io0_a_src));
+-        {
+-          if (a_src) {
+-            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++      uint64_t t_0;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
++        t_0 = wuffs_base__peek_u64be__no_bounds_check(iop_a_src);
++        iop_a_src += 8;
++      } else {
++        self->private_data.s_do_decode_frame.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
+           }
+-          wuffs_base__status t_2 = wuffs_png__decoder__decode_ihdr(self, a_src);
+-          v_status = t_2;
+-          if (a_src) {
+-            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          uint64_t* scratch = &self->private_data.s_do_decode_frame.scratch;
++          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
++          *scratch >>= 8;
++          *scratch <<= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
++          if (num_bits_0 == 56) {
++            t_0 = ((uint64_t)(*scratch >> 0));
++            break;
+           }
++          num_bits_0 += 8u;
++          *scratch |= ((uint64_t)(num_bits_0));
+         }
+-        if ( ! self->private_impl.f_ignore_checksum) {
+-          v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
+-        }
+-        if (wuffs_base__status__is_ok(&v_status)) {
+-          break;
+-        }
+-        status = v_status;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
+       }
++      v_c64 = t_0;
++    }
++    if (v_c64 != 1u) {
++      status = wuffs_base__make_status(wuffs_qoi__error__bad_footer);
++      goto exit;
++    }
++    self->private_impl.f_call_sequence = 96u;
++
++    ok:
++    self->private_impl.p_do_decode_frame = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func qoi.decoder.from_src_to_buffer
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_qoi__decoder__from_src_to_buffer(
++    wuffs_qoi__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_c8 = 0;
++  uint8_t v_dg = 0;
++  uint32_t v_bi = 0;
++  uint32_t v_bj = 0;
++  uint32_t v_bk = 0;
++  uint32_t v_ci = 0;
++  uint32_t v_hash4 = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_from_src_to_buffer;
++  if (coro_susp_point) {
++    v_dg = self->private_data.s_from_src_to_buffer.v_dg;
++    v_bi = self->private_data.s_from_src_to_buffer.v_bi;
++    v_bk = self->private_data.s_from_src_to_buffer.v_bk;
++  }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    v_bk = 7936u;
++    if (self->private_impl.f_remaining_pixels_times_4 < 7936u) {
++      v_bk = ((uint32_t)(self->private_impl.f_remaining_pixels_times_4));
++    }
++    while (v_bi < v_bk) {
+       {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-        uint32_t t_3;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-          t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-          iop_a_src += 4;
+-        } else {
+-          self->private_data.s_do_decode_image_config[0].scratch = 0;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-            uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu));
+-            *scratch >>= 8;
+-            *scratch <<= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
+-            if (num_bits_3 == 24) {
+-              t_3 = ((uint32_t)(*scratch >> 32));
+-              break;
+-            }
+-            num_bits_3 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_3));
+-          }
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
+         }
+-        v_checksum_want = t_3;
+-      }
+-      if ( ! self->private_impl.f_ignore_checksum && (v_checksum_have != v_checksum_want)) {
+-        status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
+-        goto exit;
+-      }
+-      self->private_impl.f_seen_ihdr = true;
+-    } else if (self->private_impl.f_metadata_fourcc != 0u) {
+-      self->private_impl.f_call_sequence = 16u;
+-      status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
+-      goto ok;
+-    }
+-    while (true) {
+-      if (((uint64_t)(io2_a_src - iop_a_src)) < 8u) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
+-        continue;
++        uint8_t t_0 = *iop_a_src++;
++        v_c8 = t_0;
+       }
+-      self->private_impl.f_chunk_length = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-      self->private_impl.f_chunk_type = ((uint32_t)((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) >> 32u)));
+-      if (self->private_impl.f_chunk_type == 1413563465u) {
+-        if ( ! self->private_impl.f_seen_actl || self->private_impl.f_seen_fctl) {
+-          break;
++      if (v_c8 == 254u) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_1 = *iop_a_src++;
++          self->private_data.f_pixel[2u] = t_1;
+         }
+-        self->private_impl.f_seen_idat = true;
+-      } else if (self->private_impl.f_chunk_type == 1413571686u) {
+-        if (self->private_impl.f_seen_idat && self->private_impl.f_seen_fctl) {
+-          break;
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_2 = *iop_a_src++;
++          self->private_data.f_pixel[1u] = t_2;
+         }
+-        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-        goto exit;
+-      }
+-      iop_a_src += 8u;
+-      if ( ! self->private_impl.f_ignore_checksum && ((self->private_impl.f_chunk_type & 32u) == 0u)) {
+-        self->private_impl.f_chunk_type_array[0u] = ((uint8_t)((self->private_impl.f_chunk_type >> 0u)));
+-        self->private_impl.f_chunk_type_array[1u] = ((uint8_t)((self->private_impl.f_chunk_type >> 8u)));
+-        self->private_impl.f_chunk_type_array[2u] = ((uint8_t)((self->private_impl.f_chunk_type >> 16u)));
+-        self->private_impl.f_chunk_type_array[3u] = ((uint8_t)((self->private_impl.f_chunk_type >> 24u)));
+-        wuffs_base__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
+-            sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
+-        wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4));
+-      }
+-      while (true) {
+-        v_mark = ((uint64_t)(iop_a_src - io0_a_src));
+         {
+-          if (a_src) {
+-            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
+           }
+-          wuffs_base__status t_4 = wuffs_png__decoder__decode_other_chunk(self, a_src, false);
+-          v_status = t_4;
+-          if (a_src) {
+-            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          uint8_t t_3 = *iop_a_src++;
++          self->private_data.f_pixel[0u] = t_3;
++        }
++      } else if (v_c8 == 255u) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
+           }
++          uint8_t t_4 = *iop_a_src++;
++          self->private_data.f_pixel[2u] = t_4;
+         }
+-        if ( ! self->private_impl.f_ignore_checksum && ((self->private_impl.f_chunk_type & 32u) == 0u)) {
+-          v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_5 = *iop_a_src++;
++          self->private_data.f_pixel[1u] = t_5;
+         }
+-        if (wuffs_base__status__is_ok(&v_status)) {
+-          break;
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_6 = *iop_a_src++;
++          self->private_data.f_pixel[0u] = t_6;
+         }
+-        status = v_status;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
+-      }
+-      if (self->private_impl.f_metadata_fourcc != 0u) {
+-        self->private_impl.f_call_sequence = 16u;
+-        status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
+-        goto ok;
+-      }
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
+-        uint32_t t_5;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-          t_5 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-          iop_a_src += 4;
+-        } else {
+-          self->private_data.s_do_decode_image_config[0].scratch = 0;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-            uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFFu));
+-            *scratch >>= 8;
+-            *scratch <<= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5);
+-            if (num_bits_5 == 24) {
+-              t_5 = ((uint32_t)(*scratch >> 32));
+-              break;
+-            }
+-            num_bits_5 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_5));
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
+           }
++          uint8_t t_7 = *iop_a_src++;
++          self->private_data.f_pixel[3u] = t_7;
+         }
+-        v_checksum_want = t_5;
+-      }
+-      if ( ! self->private_impl.f_ignore_checksum && ((self->private_impl.f_chunk_type & 32u) == 0u) && (v_checksum_have != v_checksum_want)) {
+-        status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
+-        goto exit;
+-      }
+-    }
+-    if ((self->private_impl.f_color_type == 3u) &&  ! self->private_impl.f_seen_plte) {
+-      status = wuffs_base__make_status(wuffs_png__error__missing_palette);
+-      goto exit;
+-    }
+-    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
+-    self->private_impl.f_first_config_io_position = self->private_impl.f_frame_config_io_position;
+-    if (a_dst != NULL) {
+-      wuffs_base__image_config__set(
+-          a_dst,
+-          self->private_impl.f_dst_pixfmt,
+-          0u,
+-          self->private_impl.f_width,
+-          self->private_impl.f_height,
+-          self->private_impl.f_first_config_io_position,
+-          ((self->private_impl.f_color_type <= 3u) &&  ! self->private_impl.f_seen_trns));
+-    }
+-    if ( ! self->private_impl.f_seen_actl) {
+-      self->private_impl.f_num_animation_frames_value = 1u;
+-      self->private_impl.f_first_rect_x0 = 0u;
+-      self->private_impl.f_first_rect_y0 = 0u;
+-      self->private_impl.f_first_rect_x1 = self->private_impl.f_width;
+-      self->private_impl.f_first_rect_y1 = self->private_impl.f_height;
+-      self->private_impl.f_first_duration = 0u;
+-      self->private_impl.f_first_disposal = 0u;
+-      self->private_impl.f_first_overwrite_instead_of_blend = false;
+-    }
+-    self->private_impl.f_call_sequence = 32u;
++      } else if (((uint8_t)(v_c8 >> 6u)) == 0u) {
++        v_ci = (4u * ((uint32_t)(((uint8_t)(v_c8 & 63u)))));
++        self->private_data.f_pixel[0u] = self->private_data.f_cache[(v_ci + 0u)];
++        self->private_data.f_pixel[1u] = self->private_data.f_cache[(v_ci + 1u)];
++        self->private_data.f_pixel[2u] = self->private_data.f_cache[(v_ci + 2u)];
++        self->private_data.f_pixel[3u] = self->private_data.f_cache[(v_ci + 3u)];
++        self->private_data.f_buffer[(v_bi + 0u)] = self->private_data.f_pixel[0u];
++        self->private_data.f_buffer[(v_bi + 1u)] = self->private_data.f_pixel[1u];
++        self->private_data.f_buffer[(v_bi + 2u)] = self->private_data.f_pixel[2u];
++        self->private_data.f_buffer[(v_bi + 3u)] = self->private_data.f_pixel[3u];
++        v_bi += 4u;
++        continue;
++      } else if (((uint8_t)(v_c8 >> 6u)) == 1u) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        self->private_data.f_pixel[2u] += ((uint8_t)(((uint8_t)(((uint8_t)(v_c8 >> 4u)) & 3u)) + 254u));
++        self->private_data.f_pixel[1u] += ((uint8_t)(((uint8_t)(((uint8_t)(v_c8 >> 2u)) & 3u)) + 254u));
++        self->private_data.f_pixel[0u] += ((uint8_t)(((uint8_t)(((uint8_t)(v_c8 >> 0u)) & 3u)) + 254u));
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++      } else if (((uint8_t)(v_c8 >> 6u)) == 2u) {
++        v_dg = ((uint8_t)(((uint8_t)(v_c8 & 63u)) + 224u));
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_8 = *iop_a_src++;
++          v_c8 = t_8;
++        }
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        self->private_data.f_pixel[2u] += ((uint8_t)(((uint8_t)(v_dg + 248u)) + ((uint8_t)(15u & ((uint8_t)(v_c8 >> 4u))))));
++        self->private_data.f_pixel[1u] += v_dg;
++        self->private_data.f_pixel[0u] += ((uint8_t)(((uint8_t)(v_dg + 248u)) + ((uint8_t)(15u & ((uint8_t)(v_c8 >> 0u))))));
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++      } else {
++        v_bj = (v_bi + (4u * (63u & (1u + ((uint32_t)(v_c8))))));
++        while (v_bi < v_bj) {
++          self->private_data.f_buffer[(v_bi + 0u)] = self->private_data.f_pixel[0u];
++          self->private_data.f_buffer[(v_bi + 1u)] = self->private_data.f_pixel[1u];
++          self->private_data.f_buffer[(v_bi + 2u)] = self->private_data.f_pixel[2u];
++          self->private_data.f_buffer[(v_bi + 3u)] = self->private_data.f_pixel[3u];
++          v_bi += 4u;
++        }
++        continue;
++      }
++      v_hash4 = (4u * (63u & ((((uint32_t)(self->private_data.f_pixel[2u])) * 3u) +
++          (((uint32_t)(self->private_data.f_pixel[1u])) * 5u) +
++          (((uint32_t)(self->private_data.f_pixel[0u])) * 7u) +
++          (((uint32_t)(self->private_data.f_pixel[3u])) * 11u))));
++      self->private_data.f_cache[(v_hash4 + 0u)] = self->private_data.f_pixel[0u];
++      self->private_data.f_cache[(v_hash4 + 1u)] = self->private_data.f_pixel[1u];
++      self->private_data.f_cache[(v_hash4 + 2u)] = self->private_data.f_pixel[2u];
++      self->private_data.f_cache[(v_hash4 + 3u)] = self->private_data.f_pixel[3u];
++      self->private_data.f_buffer[(v_bi + 0u)] = self->private_data.f_pixel[0u];
++      self->private_data.f_buffer[(v_bi + 1u)] = self->private_data.f_pixel[1u];
++      self->private_data.f_buffer[(v_bi + 2u)] = self->private_data.f_pixel[2u];
++      self->private_data.f_buffer[(v_bi + 3u)] = self->private_data.f_pixel[3u];
++      v_bi += 4u;
++    }
++    self->private_impl.f_buffer_index = v_bi;
+ 
++    goto ok;
+     ok:
+-    self->private_impl.p_do_decode_image_config[0] = 0;
++    self->private_impl.p_from_src_to_buffer = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_do_decode_image_config[0].v_checksum_have = v_checksum_have;
++  self->private_impl.p_from_src_to_buffer = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_from_src_to_buffer.v_dg = v_dg;
++  self->private_data.s_from_src_to_buffer.v_bi = v_bi;
++  self->private_data.s_from_src_to_buffer.v_bk = v_bk;
+ 
+   goto exit;
+   exit:
+@@ -54825,1068 +68222,1113 @@ wuffs_png__decoder__do_decode_image_config(
+   return status;
+ }
+ 
+-// -------- func png.decoder.decode_ihdr
++// -------- func qoi.decoder.from_buffer_to_dst
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_png__decoder__decode_ihdr(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  uint32_t v_a32 = 0;
+-  uint8_t v_a8 = 0;
++wuffs_qoi__decoder__from_buffer_to_dst(
++    wuffs_qoi__decoder* self,
++    wuffs_base__pixel_buffer* a_dst) {
++  wuffs_base__pixel_format v_dst_pixfmt = {0};
++  uint32_t v_dst_bits_per_pixel = 0;
++  uint32_t v_dst_bytes_per_pixel = 0;
++  uint64_t v_dst_bytes_per_row = 0;
++  wuffs_base__table_u8 v_tab = {0};
++  uint32_t v_bi = 0;
++  uint32_t v_rem_x = 0;
++  wuffs_base__slice_u8 v_dst = {0};
++  wuffs_base__slice_u8 v_src = {0};
++  uint32_t v_src_length = 0;
++  uint64_t v_i = 0;
+ 
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
++  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
++  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
++  if ((v_dst_bits_per_pixel & 7u) != 0u) {
++    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
+   }
+-
+-  uint32_t coro_susp_point = self->private_impl.p_decode_ihdr[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      uint32_t t_0;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-        iop_a_src += 4;
+-      } else {
+-        self->private_data.s_decode_ihdr[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_decode_ihdr[0].scratch;
+-          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
+-          *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
+-          if (num_bits_0 == 24) {
+-            t_0 = ((uint32_t)(*scratch >> 32));
+-            break;
+-          }
+-          num_bits_0 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_0));
+-        }
+-      }
+-      v_a32 = t_0;
+-    }
+-    if ((v_a32 == 0u) || (v_a32 > 2147483647u)) {
+-      status = wuffs_base__make_status(wuffs_png__error__bad_header);
+-      goto exit;
+-    } else if (v_a32 > 16777215u) {
+-      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
+-      goto exit;
+-    }
+-    self->private_impl.f_width = v_a32;
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-      uint32_t t_1;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-        iop_a_src += 4;
+-      } else {
+-        self->private_data.s_decode_ihdr[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_decode_ihdr[0].scratch;
+-          uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
+-          *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
+-          if (num_bits_1 == 24) {
+-            t_1 = ((uint32_t)(*scratch >> 32));
+-            break;
+-          }
+-          num_bits_1 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_1));
+-        }
+-      }
+-      v_a32 = t_1;
+-    }
+-    if ((v_a32 == 0u) || (v_a32 > 2147483647u)) {
+-      status = wuffs_base__make_status(wuffs_png__error__bad_header);
+-      goto exit;
+-    } else if (v_a32 > 16777215u) {
+-      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
+-      goto exit;
+-    }
+-    self->private_impl.f_height = v_a32;
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_2 = *iop_a_src++;
+-      v_a8 = t_2;
+-    }
+-    if (v_a8 > 16u) {
+-      status = wuffs_base__make_status(wuffs_png__error__bad_header);
+-      goto exit;
+-    }
+-    self->private_impl.f_depth = v_a8;
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_3 = *iop_a_src++;
+-      v_a8 = t_3;
+-    }
+-    if ((v_a8 == 1u) || (v_a8 == 5u) || (v_a8 > 6u)) {
+-      status = wuffs_base__make_status(wuffs_png__error__bad_header);
+-      goto exit;
+-    }
+-    self->private_impl.f_color_type = v_a8;
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_4 = *iop_a_src++;
+-      v_a8 = t_4;
+-    }
+-    if (v_a8 != 0u) {
+-      status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method);
+-      goto exit;
+-    }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
++  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
++  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
++  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
++  while (v_bi < self->private_impl.f_buffer_index) {
++    if (self->private_impl.f_width <= self->private_impl.f_dst_x) {
++      self->private_impl.f_dst_x = 0u;
++      self->private_impl.f_dst_y += 1u;
++      if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
++        break;
+       }
+-      uint8_t t_5 = *iop_a_src++;
+-      v_a8 = t_5;
+-    }
+-    if (v_a8 != 0u) {
+-      status = wuffs_base__make_status(wuffs_png__error__bad_header);
+-      goto exit;
++      v_rem_x = self->private_impl.f_width;
++    } else {
++      v_rem_x = (self->private_impl.f_width - self->private_impl.f_dst_x);
+     }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_6 = *iop_a_src++;
+-      v_a8 = t_6;
++    v_src = wuffs_base__make_slice_u8_ij(self->private_data.f_buffer, v_bi, self->private_impl.f_buffer_index);
++    if (((uint64_t)((4u * v_rem_x))) < ((uint64_t)(v_src.len))) {
++      v_src = wuffs_base__slice_u8__subslice_j(v_src, ((uint64_t)((4u * v_rem_x))));
+     }
+-    if (v_a8 == 0u) {
+-      self->private_impl.f_interlace_pass = 0u;
+-    } else if (v_a8 == 1u) {
+-      self->private_impl.f_interlace_pass = 1u;
+-      self->private_impl.choosy_filter_and_swizzle = (
+-          &wuffs_png__decoder__filter_and_swizzle_tricky);
+-    } else {
+-      status = wuffs_base__make_status(wuffs_png__error__bad_header);
+-      goto exit;
++    v_src_length = ((uint32_t)(((uint64_t)(v_src.len))));
++    v_bi += v_src_length;
++    v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
++    if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
++      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
+     }
+-    self->private_impl.f_filter_distance = 0u;
+-    wuffs_png__decoder__assign_filter_distance(self);
+-    if (self->private_impl.f_filter_distance == 0u) {
+-      status = wuffs_base__make_status(wuffs_png__error__bad_header);
+-      goto exit;
++    v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
++    self->private_impl.f_dst_x += (v_src_length / 4u);
++    if (v_i < ((uint64_t)(v_dst.len))) {
++      wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), wuffs_base__pixel_buffer__palette(a_dst), v_src);
+     }
+-    self->private_impl.f_overall_workbuf_length = (((uint64_t)(self->private_impl.f_height)) * (1u + wuffs_png__decoder__calculate_bytes_per_row(self, self->private_impl.f_width)));
+-    wuffs_png__decoder__choose_filter_implementations(self);
++  }
++  return wuffs_base__make_status(NULL);
++}
+ 
+-    goto ok;
+-    ok:
+-    self->private_impl.p_decode_ihdr[0] = 0;
+-    goto exit;
++// -------- func qoi.decoder.frame_dirty_rect
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
++wuffs_qoi__decoder__frame_dirty_rect(
++    const wuffs_qoi__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_rect_ie_u32();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_rect_ie_u32();
+   }
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_ihdr[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  return wuffs_base__utility__make_rect_ie_u32(
++      0u,
++      0u,
++      self->private_impl.f_width,
++      self->private_impl.f_height);
++}
++
++// -------- func qoi.decoder.num_animation_loops
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_qoi__decoder__num_animation_loops(
++    const wuffs_qoi__decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  return 0u;
++}
++
++// -------- func qoi.decoder.num_decoded_frame_configs
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_qoi__decoder__num_decoded_frame_configs(
++    const wuffs_qoi__decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  if (self->private_impl.f_call_sequence > 32u) {
++    return 1u;
++  }
++  return 0u;
++}
+ 
++// -------- func qoi.decoder.num_decoded_frames
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_qoi__decoder__num_decoded_frames(
++    const wuffs_qoi__decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  if (self->private_impl.f_call_sequence > 64u) {
++    return 1u;
++  }
++  return 0u;
++}
++
++// -------- func qoi.decoder.restart_frame
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_qoi__decoder__restart_frame(
++    wuffs_qoi__decoder* self,
++    uint64_t a_index,
++    uint64_t a_io_position) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++
++  if (self->private_impl.f_call_sequence < 32u) {
++    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++  }
++  if ((a_index != 0u) || (a_io_position != 14u)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  self->private_impl.f_call_sequence = 40u;
++  return wuffs_base__make_status(NULL);
++}
++
++// -------- func qoi.decoder.set_report_metadata
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_qoi__decoder__set_report_metadata(
++    wuffs_qoi__decoder* self,
++    uint32_t a_fourcc,
++    bool a_report) {
++  return wuffs_base__make_empty_struct();
++}
++
++// -------- func qoi.decoder.tell_me_more
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_qoi__decoder__tell_me_more(
++    wuffs_qoi__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__more_information* a_minfo,
++    wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_dst || !a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 4)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  status = wuffs_base__make_status(wuffs_base__error__no_more_information);
++  goto exit;
++
++  goto ok;
++  ok:
+   goto exit;
+   exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
+   }
+-
+   return status;
+ }
+ 
+-// -------- func png.decoder.assign_filter_distance
++// -------- func qoi.decoder.workbuf_len
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_qoi__decoder__workbuf_len(
++    const wuffs_qoi__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++
++  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
++}
++
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__QOI)
++
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__SHA256)
++
++// ---------------- Status Codes Implementations
++
++// ---------------- Private Consts
++
++static const uint32_t
++WUFFS_SHA256__INITIAL_SHA256_H[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  1779033703u, 3144134277u, 1013904242u, 2773480762u, 1359893119u, 2600822924u, 528734635u, 1541459225u,
++};
++
++static const uint32_t
++WUFFS_SHA256__K[64] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  1116352408u, 1899447441u, 3049323471u, 3921009573u, 961987163u, 1508970993u, 2453635748u, 2870763221u,
++  3624381080u, 310598401u, 607225278u, 1426881987u, 1925078388u, 2162078206u, 2614888103u, 3248222580u,
++  3835390401u, 4022224774u, 264347078u, 604807628u, 770255983u, 1249150122u, 1555081692u, 1996064986u,
++  2554220882u, 2821834349u, 2952996808u, 3210313671u, 3336571891u, 3584528711u, 113926993u, 338241895u,
++  666307205u, 773529912u, 1294757372u, 1396182291u, 1695183700u, 1986661051u, 2177026350u, 2456956037u,
++  2730485921u, 2820302411u, 3259730800u, 3345764771u, 3516065817u, 3600352804u, 4094571909u, 275423344u,
++  430227734u, 506948616u, 659060556u, 883997877u, 958139571u, 1322822218u, 1537002063u, 1747873779u,
++  1955562222u, 2024104815u, 2227730452u, 2361852424u, 2428436474u, 2756734187u, 3204031479u, 3329325298u,
++};
++
++// ---------------- Private Initializer Prototypes
++
++// ---------------- Private Function Prototypes
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__empty_struct
+-wuffs_png__decoder__assign_filter_distance(
+-    wuffs_png__decoder* self) {
+-  if (self->private_impl.f_depth < 8u) {
+-    if ((self->private_impl.f_depth != 1u) && (self->private_impl.f_depth != 2u) && (self->private_impl.f_depth != 4u)) {
+-      return wuffs_base__make_empty_struct();
+-    } else if (self->private_impl.f_color_type == 0u) {
+-      self->private_impl.f_dst_pixfmt = 536870920u;
+-      self->private_impl.f_src_pixfmt = 536870920u;
+-    } else if (self->private_impl.f_color_type == 3u) {
+-      self->private_impl.f_dst_pixfmt = 2198077448u;
+-      self->private_impl.f_src_pixfmt = 2198077448u;
++wuffs_sha256__hasher__up(
++    wuffs_sha256__hasher* self,
++    wuffs_base__slice_u8 a_x);
++
++// ---------------- VTables
++
++const wuffs_base__hasher_bitvec256__func_ptrs
++wuffs_sha256__hasher__func_ptrs_for__wuffs_base__hasher_bitvec256 = {
++  (wuffs_base__bitvec256(*)(const void*))(&wuffs_sha256__hasher__checksum_bitvec256),
++  (uint64_t(*)(const void*,
++      uint32_t))(&wuffs_sha256__hasher__get_quirk),
++  (wuffs_base__status(*)(void*,
++      uint32_t,
++      uint64_t))(&wuffs_sha256__hasher__set_quirk),
++  (wuffs_base__empty_struct(*)(void*,
++      wuffs_base__slice_u8))(&wuffs_sha256__hasher__update),
++  (wuffs_base__bitvec256(*)(void*,
++      wuffs_base__slice_u8))(&wuffs_sha256__hasher__update_bitvec256),
++};
++
++// ---------------- Initializer Implementations
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_sha256__hasher__initialize(
++    wuffs_sha256__hasher* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options){
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (sizeof(*self) != sizeof_star_self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  }
++  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
++      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++  }
++
++  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
++    // The whole point of this if-check is to detect an uninitialized *self.
++    // We disable the warning on GCC. Clang-5.0 does not have this warning.
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++#endif
++    if (self->private_impl.magic != 0) {
++      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++    }
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++  } else {
++    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
++      memset(self, 0, sizeof(*self));
++      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
+     } else {
+-      return wuffs_base__make_empty_struct();
++      memset(&(self->private_impl), 0, sizeof(self->private_impl));
+     }
+-    self->private_impl.f_filter_distance = 1u;
+-    self->private_impl.choosy_filter_and_swizzle = (
+-        &wuffs_png__decoder__filter_and_swizzle_tricky);
+-  } else if (self->private_impl.f_color_type == 0u) {
+-    if (self->private_impl.f_depth == 8u) {
+-      self->private_impl.f_dst_pixfmt = 536870920u;
+-      self->private_impl.f_src_pixfmt = 536870920u;
+-      self->private_impl.f_filter_distance = 1u;
+-    } else if (self->private_impl.f_depth == 16u) {
+-      if (self->private_impl.f_interlace_pass == 0u) {
+-        self->private_impl.f_dst_pixfmt = 536870923u;
+-        self->private_impl.f_src_pixfmt = 537919499u;
+-      } else {
+-        self->private_impl.f_dst_pixfmt = 2164308923u;
+-        self->private_impl.f_src_pixfmt = 2164308923u;
++  }
++
++  self->private_impl.magic = WUFFS_BASE__MAGIC;
++  self->private_impl.vtable_for__wuffs_base__hasher_bitvec256.vtable_name =
++      wuffs_base__hasher_bitvec256__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__hasher_bitvec256.function_pointers =
++      (const void*)(&wuffs_sha256__hasher__func_ptrs_for__wuffs_base__hasher_bitvec256);
++  return wuffs_base__make_status(NULL);
++}
++
++wuffs_sha256__hasher*
++wuffs_sha256__hasher__alloc(void) {
++  wuffs_sha256__hasher* x =
++      (wuffs_sha256__hasher*)(calloc(1, sizeof(wuffs_sha256__hasher)));
++  if (!x) {
++    return NULL;
++  }
++  if (wuffs_sha256__hasher__initialize(
++      x, sizeof(wuffs_sha256__hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++    free(x);
++    return NULL;
++  }
++  return x;
++}
++
++size_t
++sizeof__wuffs_sha256__hasher(void) {
++  return sizeof(wuffs_sha256__hasher);
++}
++
++// ---------------- Function Implementations
++
++// -------- func sha256.hasher.get_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_sha256__hasher__get_quirk(
++    const wuffs_sha256__hasher* self,
++    uint32_t a_key) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  return 0u;
++}
++
++// -------- func sha256.hasher.set_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_sha256__hasher__set_quirk(
++    wuffs_sha256__hasher* self,
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++
++  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++}
++
++// -------- func sha256.hasher.update
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_sha256__hasher__update(
++    wuffs_sha256__hasher* self,
++    wuffs_base__slice_u8 a_x) {
++  if (!self) {
++    return wuffs_base__make_empty_struct();
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_empty_struct();
++  }
++
++  uint64_t v_new_lmu = 0;
++
++  if ((self->private_impl.f_length_modulo_u64 == 0u) &&  ! self->private_impl.f_length_overflows_u64) {
++    self->private_impl.f_h0 = WUFFS_SHA256__INITIAL_SHA256_H[0u];
++    self->private_impl.f_h1 = WUFFS_SHA256__INITIAL_SHA256_H[1u];
++    self->private_impl.f_h2 = WUFFS_SHA256__INITIAL_SHA256_H[2u];
++    self->private_impl.f_h3 = WUFFS_SHA256__INITIAL_SHA256_H[3u];
++    self->private_impl.f_h4 = WUFFS_SHA256__INITIAL_SHA256_H[4u];
++    self->private_impl.f_h5 = WUFFS_SHA256__INITIAL_SHA256_H[5u];
++    self->private_impl.f_h6 = WUFFS_SHA256__INITIAL_SHA256_H[6u];
++    self->private_impl.f_h7 = WUFFS_SHA256__INITIAL_SHA256_H[7u];
++  }
++  v_new_lmu = ((uint64_t)(self->private_impl.f_length_modulo_u64 + ((uint64_t)(a_x.len))));
++  self->private_impl.f_length_overflows_u64 = ((v_new_lmu < self->private_impl.f_length_modulo_u64) || self->private_impl.f_length_overflows_u64);
++  self->private_impl.f_length_modulo_u64 = v_new_lmu;
++  if (self->private_impl.f_buf_len != 0u) {
++    while (self->private_impl.f_buf_len < 64u) {
++      if (((uint64_t)(a_x.len)) <= 0u) {
++        return wuffs_base__make_empty_struct();
+       }
+-      self->private_impl.f_filter_distance = 2u;
+-    }
+-  } else if (self->private_impl.f_color_type == 2u) {
+-    if (self->private_impl.f_depth == 8u) {
+-      self->private_impl.f_dst_pixfmt = 2147485832u;
+-      self->private_impl.f_src_pixfmt = 2684356744u;
+-      self->private_impl.f_filter_distance = 3u;
+-    } else if (self->private_impl.f_depth == 16u) {
+-      self->private_impl.f_dst_pixfmt = 2164308923u;
+-      self->private_impl.f_src_pixfmt = 2164308923u;
+-      self->private_impl.f_filter_distance = 6u;
+-      self->private_impl.choosy_filter_and_swizzle = (
+-          &wuffs_png__decoder__filter_and_swizzle_tricky);
+-    }
+-  } else if (self->private_impl.f_color_type == 3u) {
+-    if (self->private_impl.f_depth == 8u) {
+-      self->private_impl.f_dst_pixfmt = 2198077448u;
+-      self->private_impl.f_src_pixfmt = 2198077448u;
+-      self->private_impl.f_filter_distance = 1u;
+-    }
+-  } else if (self->private_impl.f_color_type == 4u) {
+-    if (self->private_impl.f_depth == 8u) {
+-      self->private_impl.f_dst_pixfmt = 2164295816u;
+-      self->private_impl.f_src_pixfmt = 2164295816u;
+-      self->private_impl.f_filter_distance = 2u;
+-      self->private_impl.choosy_filter_and_swizzle = (
+-          &wuffs_png__decoder__filter_and_swizzle_tricky);
+-    } else if (self->private_impl.f_depth == 16u) {
+-      self->private_impl.f_dst_pixfmt = 2164308923u;
+-      self->private_impl.f_src_pixfmt = 2164308923u;
+-      self->private_impl.f_filter_distance = 4u;
+-      self->private_impl.choosy_filter_and_swizzle = (
+-          &wuffs_png__decoder__filter_and_swizzle_tricky);
+-    }
+-  } else if (self->private_impl.f_color_type == 6u) {
+-    if (self->private_impl.f_depth == 8u) {
+-      self->private_impl.f_dst_pixfmt = 2164295816u;
+-      self->private_impl.f_src_pixfmt = 2701166728u;
+-      self->private_impl.f_filter_distance = 4u;
+-    } else if (self->private_impl.f_depth == 16u) {
+-      self->private_impl.f_dst_pixfmt = 2164308923u;
+-      self->private_impl.f_src_pixfmt = 2164308923u;
+-      self->private_impl.f_filter_distance = 8u;
+-      self->private_impl.choosy_filter_and_swizzle = (
+-          &wuffs_png__decoder__filter_and_swizzle_tricky);
++      self->private_impl.f_buf_data[self->private_impl.f_buf_len] = a_x.ptr[0u];
++      self->private_impl.f_buf_len += 1u;
++      a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
+     }
++    self->private_impl.f_buf_len = 0u;
++    wuffs_sha256__hasher__up(self, wuffs_base__make_slice_u8(self->private_impl.f_buf_data, 64));
+   }
++  wuffs_sha256__hasher__up(self, a_x);
+   return wuffs_base__make_empty_struct();
+ }
+ 
+-// -------- func png.decoder.calculate_bytes_per_row
++// -------- func sha256.hasher.update_bitvec256
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static uint64_t
+-wuffs_png__decoder__calculate_bytes_per_row(
+-    const wuffs_png__decoder* self,
+-    uint32_t a_width) {
+-  uint64_t v_bytes_per_channel = 0;
+-
+-  if (self->private_impl.f_depth == 1u) {
+-    return ((uint64_t)(((a_width + 7u) / 8u)));
+-  } else if (self->private_impl.f_depth == 2u) {
+-    return ((uint64_t)(((a_width + 3u) / 4u)));
+-  } else if (self->private_impl.f_depth == 4u) {
+-    return ((uint64_t)(((a_width + 1u) / 2u)));
++WUFFS_BASE__MAYBE_STATIC wuffs_base__bitvec256
++wuffs_sha256__hasher__update_bitvec256(
++    wuffs_sha256__hasher* self,
++    wuffs_base__slice_u8 a_x) {
++  if (!self) {
++    return wuffs_base__utility__make_bitvec256(0u, 0u, 0u, 0u);
+   }
+-  v_bytes_per_channel = ((uint64_t)((self->private_impl.f_depth >> 3u)));
+-  return (((uint64_t)(a_width)) * v_bytes_per_channel * ((uint64_t)(WUFFS_PNG__NUM_CHANNELS[self->private_impl.f_color_type])));
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__utility__make_bitvec256(0u, 0u, 0u, 0u);
++  }
++
++  wuffs_sha256__hasher__update(self, a_x);
++  return wuffs_sha256__hasher__checksum_bitvec256(self);
+ }
+ 
+-// -------- func png.decoder.choose_filter_implementations
++// -------- func sha256.hasher.up
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__empty_struct
+-wuffs_png__decoder__choose_filter_implementations(
+-    wuffs_png__decoder* self) {
+-  if (self->private_impl.f_filter_distance == 3u) {
+-    self->private_impl.choosy_filter_1 = (
+-        &wuffs_png__decoder__filter_1_distance_3_fallback);
+-    self->private_impl.choosy_filter_3 = (
+-        &wuffs_png__decoder__filter_3_distance_3_fallback);
+-    self->private_impl.choosy_filter_4 = (
+-#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-        wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_4_distance_3_arm_neon :
+-#endif
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_4_distance_3_x86_sse42 :
+-#endif
+-        &wuffs_png__decoder__filter_4_distance_3_fallback);
+-  } else if (self->private_impl.f_filter_distance == 4u) {
+-    self->private_impl.choosy_filter_1 = (
+-#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-        wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_1_distance_4_arm_neon :
+-#endif
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_1_distance_4_x86_sse42 :
+-#endif
+-        &wuffs_png__decoder__filter_1_distance_4_fallback);
+-    self->private_impl.choosy_filter_3 = (
+-#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-        wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_3_distance_4_arm_neon :
+-#endif
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_3_distance_4_x86_sse42 :
+-#endif
+-        &wuffs_png__decoder__filter_3_distance_4_fallback);
+-    self->private_impl.choosy_filter_4 = (
+-#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
+-        wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_4_distance_4_arm_neon :
+-#endif
+-#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
+-        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_4_distance_4_x86_sse42 :
+-#endif
+-        &wuffs_png__decoder__filter_4_distance_4_fallback);
++wuffs_sha256__hasher__up(
++    wuffs_sha256__hasher* self,
++    wuffs_base__slice_u8 a_x) {
++  wuffs_base__slice_u8 v_p = {0};
++  uint32_t v_w[64] = {0};
++  uint32_t v_w2 = 0;
++  uint32_t v_w15 = 0;
++  uint32_t v_s0 = 0;
++  uint32_t v_s1 = 0;
++  uint32_t v_t1 = 0;
++  uint32_t v_t2 = 0;
++  uint32_t v_a = 0;
++  uint32_t v_b = 0;
++  uint32_t v_c = 0;
++  uint32_t v_d = 0;
++  uint32_t v_e = 0;
++  uint32_t v_f = 0;
++  uint32_t v_g = 0;
++  uint32_t v_h = 0;
++  uint32_t v_i = 0;
++  uint32_t v_buf_len = 0;
++
++  v_a = self->private_impl.f_h0;
++  v_b = self->private_impl.f_h1;
++  v_c = self->private_impl.f_h2;
++  v_d = self->private_impl.f_h3;
++  v_e = self->private_impl.f_h4;
++  v_f = self->private_impl.f_h5;
++  v_g = self->private_impl.f_h6;
++  v_h = self->private_impl.f_h7;
++  {
++    wuffs_base__slice_u8 i_slice_p = a_x;
++    v_p.ptr = i_slice_p.ptr;
++    v_p.len = 64;
++    const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 64) * 64));
++    while (v_p.ptr < i_end0_p) {
++      v_w[0u] = ((((uint32_t)(v_p.ptr[0u])) << 24u) |
++          (((uint32_t)(v_p.ptr[1u])) << 16u) |
++          (((uint32_t)(v_p.ptr[2u])) << 8u) |
++          ((uint32_t)(v_p.ptr[3u])));
++      v_w[1u] = ((((uint32_t)(v_p.ptr[4u])) << 24u) |
++          (((uint32_t)(v_p.ptr[5u])) << 16u) |
++          (((uint32_t)(v_p.ptr[6u])) << 8u) |
++          ((uint32_t)(v_p.ptr[7u])));
++      v_w[2u] = ((((uint32_t)(v_p.ptr[8u])) << 24u) |
++          (((uint32_t)(v_p.ptr[9u])) << 16u) |
++          (((uint32_t)(v_p.ptr[10u])) << 8u) |
++          ((uint32_t)(v_p.ptr[11u])));
++      v_w[3u] = ((((uint32_t)(v_p.ptr[12u])) << 24u) |
++          (((uint32_t)(v_p.ptr[13u])) << 16u) |
++          (((uint32_t)(v_p.ptr[14u])) << 8u) |
++          ((uint32_t)(v_p.ptr[15u])));
++      v_w[4u] = ((((uint32_t)(v_p.ptr[16u])) << 24u) |
++          (((uint32_t)(v_p.ptr[17u])) << 16u) |
++          (((uint32_t)(v_p.ptr[18u])) << 8u) |
++          ((uint32_t)(v_p.ptr[19u])));
++      v_w[5u] = ((((uint32_t)(v_p.ptr[20u])) << 24u) |
++          (((uint32_t)(v_p.ptr[21u])) << 16u) |
++          (((uint32_t)(v_p.ptr[22u])) << 8u) |
++          ((uint32_t)(v_p.ptr[23u])));
++      v_w[6u] = ((((uint32_t)(v_p.ptr[24u])) << 24u) |
++          (((uint32_t)(v_p.ptr[25u])) << 16u) |
++          (((uint32_t)(v_p.ptr[26u])) << 8u) |
++          ((uint32_t)(v_p.ptr[27u])));
++      v_w[7u] = ((((uint32_t)(v_p.ptr[28u])) << 24u) |
++          (((uint32_t)(v_p.ptr[29u])) << 16u) |
++          (((uint32_t)(v_p.ptr[30u])) << 8u) |
++          ((uint32_t)(v_p.ptr[31u])));
++      v_w[8u] = ((((uint32_t)(v_p.ptr[32u])) << 24u) |
++          (((uint32_t)(v_p.ptr[33u])) << 16u) |
++          (((uint32_t)(v_p.ptr[34u])) << 8u) |
++          ((uint32_t)(v_p.ptr[35u])));
++      v_w[9u] = ((((uint32_t)(v_p.ptr[36u])) << 24u) |
++          (((uint32_t)(v_p.ptr[37u])) << 16u) |
++          (((uint32_t)(v_p.ptr[38u])) << 8u) |
++          ((uint32_t)(v_p.ptr[39u])));
++      v_w[10u] = ((((uint32_t)(v_p.ptr[40u])) << 24u) |
++          (((uint32_t)(v_p.ptr[41u])) << 16u) |
++          (((uint32_t)(v_p.ptr[42u])) << 8u) |
++          ((uint32_t)(v_p.ptr[43u])));
++      v_w[11u] = ((((uint32_t)(v_p.ptr[44u])) << 24u) |
++          (((uint32_t)(v_p.ptr[45u])) << 16u) |
++          (((uint32_t)(v_p.ptr[46u])) << 8u) |
++          ((uint32_t)(v_p.ptr[47u])));
++      v_w[12u] = ((((uint32_t)(v_p.ptr[48u])) << 24u) |
++          (((uint32_t)(v_p.ptr[49u])) << 16u) |
++          (((uint32_t)(v_p.ptr[50u])) << 8u) |
++          ((uint32_t)(v_p.ptr[51u])));
++      v_w[13u] = ((((uint32_t)(v_p.ptr[52u])) << 24u) |
++          (((uint32_t)(v_p.ptr[53u])) << 16u) |
++          (((uint32_t)(v_p.ptr[54u])) << 8u) |
++          ((uint32_t)(v_p.ptr[55u])));
++      v_w[14u] = ((((uint32_t)(v_p.ptr[56u])) << 24u) |
++          (((uint32_t)(v_p.ptr[57u])) << 16u) |
++          (((uint32_t)(v_p.ptr[58u])) << 8u) |
++          ((uint32_t)(v_p.ptr[59u])));
++      v_w[15u] = ((((uint32_t)(v_p.ptr[60u])) << 24u) |
++          (((uint32_t)(v_p.ptr[61u])) << 16u) |
++          (((uint32_t)(v_p.ptr[62u])) << 8u) |
++          ((uint32_t)(v_p.ptr[63u])));
++      v_i = 16u;
++      while (v_i < 64u) {
++        v_w2 = v_w[(v_i - 2u)];
++        v_s1 = ((v_w2 >> 10u) ^ (((uint32_t)(v_w2 << 15u)) | (v_w2 >> 17u)) ^ (((uint32_t)(v_w2 << 13u)) | (v_w2 >> 19u)));
++        v_w15 = v_w[(v_i - 15u)];
++        v_s0 = ((v_w15 >> 3u) ^ (((uint32_t)(v_w15 << 25u)) | (v_w15 >> 7u)) ^ (((uint32_t)(v_w15 << 14u)) | (v_w15 >> 18u)));
++        v_w[v_i] = ((uint32_t)(((uint32_t)(((uint32_t)(v_s1 + v_w[(v_i - 7u)])) + v_s0)) + v_w[(v_i - 16u)]));
++        v_i += 1u;
++      }
++      v_i = 0u;
++      while (v_i < 64u) {
++        v_t1 = v_h;
++        v_t1 += ((((uint32_t)(v_e << 26u)) | (v_e >> 6u)) ^ (((uint32_t)(v_e << 21u)) | (v_e >> 11u)) ^ (((uint32_t)(v_e << 7u)) | (v_e >> 25u)));
++        v_t1 += ((v_e & v_f) ^ ((4294967295u ^ v_e) & v_g));
++        v_t1 += WUFFS_SHA256__K[v_i];
++        v_t1 += v_w[v_i];
++        v_t2 = ((((uint32_t)(v_a << 30u)) | (v_a >> 2u)) ^ (((uint32_t)(v_a << 19u)) | (v_a >> 13u)) ^ (((uint32_t)(v_a << 10u)) | (v_a >> 22u)));
++        v_t2 += ((v_a & v_b) ^ (v_a & v_c) ^ (v_b & v_c));
++        v_h = v_g;
++        v_g = v_f;
++        v_f = v_e;
++        v_e = ((uint32_t)(v_d + v_t1));
++        v_d = v_c;
++        v_c = v_b;
++        v_b = v_a;
++        v_a = ((uint32_t)(v_t1 + v_t2));
++        v_i += 1u;
++      }
++      v_a += self->private_impl.f_h0;
++      self->private_impl.f_h0 = v_a;
++      v_b += self->private_impl.f_h1;
++      self->private_impl.f_h1 = v_b;
++      v_c += self->private_impl.f_h2;
++      self->private_impl.f_h2 = v_c;
++      v_d += self->private_impl.f_h3;
++      self->private_impl.f_h3 = v_d;
++      v_e += self->private_impl.f_h4;
++      self->private_impl.f_h4 = v_e;
++      v_f += self->private_impl.f_h5;
++      self->private_impl.f_h5 = v_f;
++      v_g += self->private_impl.f_h6;
++      self->private_impl.f_h6 = v_g;
++      v_h += self->private_impl.f_h7;
++      self->private_impl.f_h7 = v_h;
++      v_p.ptr += 64;
++    }
++    v_p.len = 1;
++    const uint8_t* i_end1_p = wuffs_private_impl__ptr_u8_plus_len(i_slice_p.ptr, i_slice_p.len);
++    while (v_p.ptr < i_end1_p) {
++      self->private_impl.f_buf_data[v_buf_len] = v_p.ptr[0u];
++      v_buf_len = ((v_buf_len + 1u) & 63u);
++      v_p.ptr += 1;
++    }
++    v_p.len = 0;
+   }
++  self->private_impl.f_buf_len = ((uint32_t)((((uint64_t)(a_x.len)) & 63u)));
+   return wuffs_base__make_empty_struct();
+ }
+ 
+-// -------- func png.decoder.decode_other_chunk
++// -------- func sha256.hasher.checksum_bitvec256
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__decode_other_chunk(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src,
+-    bool a_framy) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
++WUFFS_BASE__MAYBE_STATIC wuffs_base__bitvec256
++wuffs_sha256__hasher__checksum_bitvec256(
++    const wuffs_sha256__hasher* self) {
++  if (!self) {
++    return wuffs_base__utility__make_bitvec256(0u, 0u, 0u, 0u);
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__make_bitvec256(0u, 0u, 0u, 0u);
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_other_chunk[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++  uint32_t v_buf_len = 0;
++  uint8_t v_buf_data[64] = {0};
++  uint64_t v_length_in_bits = 0;
++  uint32_t v_w[64] = {0};
++  uint32_t v_w2 = 0;
++  uint32_t v_w15 = 0;
++  uint32_t v_s0 = 0;
++  uint32_t v_s1 = 0;
++  uint32_t v_t1 = 0;
++  uint32_t v_t2 = 0;
++  uint32_t v_h0 = 0;
++  uint32_t v_h1 = 0;
++  uint32_t v_h2 = 0;
++  uint32_t v_h3 = 0;
++  uint32_t v_h4 = 0;
++  uint32_t v_h5 = 0;
++  uint32_t v_h6 = 0;
++  uint32_t v_h7 = 0;
++  uint32_t v_a = 0;
++  uint32_t v_b = 0;
++  uint32_t v_c = 0;
++  uint32_t v_d = 0;
++  uint32_t v_e = 0;
++  uint32_t v_f = 0;
++  uint32_t v_g = 0;
++  uint32_t v_h = 0;
++  uint32_t v_i = 0;
++  bool v_final_block = false;
+ 
+-    if ((self->private_impl.f_chunk_type == 1163152464u) &&  ! a_framy) {
+-      if (self->private_impl.f_seen_plte) {
+-        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-        goto exit;
+-      } else if (self->private_impl.f_color_type == 3u) {
+-        if (a_src) {
+-          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-        }
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-        status = wuffs_png__decoder__decode_plte(self, a_src);
+-        if (a_src) {
+-          iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-        }
+-        if (status.repr) {
+-          goto suspend;
+-        }
+-      } else if ((self->private_impl.f_color_type == 2u) || (self->private_impl.f_color_type == 6u)) {
+-      } else {
+-        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-        goto exit;
+-      }
+-      self->private_impl.f_seen_plte = true;
+-    } else if ((self->private_impl.f_chunk_type & 32u) == 0u) {
+-      if (self->private_impl.f_chunk_type != 1413563465u) {
+-        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-        goto exit;
+-      }
++  v_i = 0u;
++  while (v_i < 64u) {
++    v_buf_data[v_i] = self->private_impl.f_buf_data[v_i];
++    v_i += 1u;
++  }
++  v_buf_len = (self->private_impl.f_buf_len & 63u);
++  if (v_buf_len < 56u) {
++    v_buf_data[v_buf_len] = 128u;
++    v_buf_len += 1u;
++    while (v_buf_len < 56u) {
++      v_buf_data[v_buf_len] = 0u;
++      v_buf_len += 1u;
+     }
+-    if (self->private_impl.f_chunk_type == 1716082789u) {
+-      if (self->private_impl.f_report_metadata_exif) {
+-        if (self->private_impl.f_seen_exif) {
+-          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-          goto exit;
+-        }
+-        if (a_src) {
+-          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-        }
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-        status = wuffs_png__decoder__decode_exif(self, a_src);
+-        if (a_src) {
+-          iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-        }
+-        if (status.repr) {
+-          goto suspend;
+-        }
+-        self->private_impl.f_seen_exif = true;
+-      }
+-    } else if ((self->private_impl.f_chunk_type == 1951945833u) || (self->private_impl.f_chunk_type == 1951942004u) || (self->private_impl.f_chunk_type == 1951945850u)) {
+-      if (self->private_impl.f_report_metadata_kvp) {
+-        self->private_impl.f_metadata_flavor = 4u;
+-        self->private_impl.f_metadata_fourcc = 1263947851u;
+-        self->private_impl.f_metadata_x = 0u;
+-        self->private_impl.f_metadata_y = 0u;
+-        self->private_impl.f_metadata_z = 0u;
+-      }
+-    } else if ( ! a_framy) {
+-      if (self->private_impl.f_chunk_type == 1280598881u) {
+-        if (self->private_impl.f_seen_actl) {
+-          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-          goto exit;
+-        }
+-        if (a_src) {
+-          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-        }
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-        status = wuffs_png__decoder__decode_actl(self, a_src);
+-        if (a_src) {
+-          iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-        }
+-        if (status.repr) {
+-          goto suspend;
+-        }
+-        self->private_impl.f_seen_actl = true;
+-      } else if (self->private_impl.f_chunk_type == 1297238115u) {
+-        if (self->private_impl.f_report_metadata_chrm) {
+-          if (self->private_impl.f_seen_chrm) {
+-            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-            goto exit;
+-          }
+-          if (a_src) {
+-            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-          }
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-          status = wuffs_png__decoder__decode_chrm(self, a_src);
+-          if (a_src) {
+-            iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-          }
+-          if (status.repr) {
+-            goto suspend;
+-          }
+-          self->private_impl.f_seen_chrm = true;
+-        }
+-      } else if (self->private_impl.f_chunk_type == 1280598886u) {
+-        if (self->private_impl.f_seen_fctl) {
+-          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-          goto exit;
+-        }
+-        if (a_src) {
+-          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-        }
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-        status = wuffs_png__decoder__decode_fctl(self, a_src);
+-        if (a_src) {
+-          iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-        }
+-        if (status.repr) {
+-          goto suspend;
+-        }
+-        self->private_impl.f_seen_fctl = true;
+-      } else if (self->private_impl.f_chunk_type == 1095582055u) {
+-        if (self->private_impl.f_report_metadata_gama) {
+-          if (self->private_impl.f_seen_gama) {
+-            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-            goto exit;
+-          }
+-          if (a_src) {
+-            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-          }
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-          status = wuffs_png__decoder__decode_gama(self, a_src);
+-          if (a_src) {
+-            iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-          }
+-          if (status.repr) {
+-            goto suspend;
+-          }
+-          self->private_impl.f_seen_gama = true;
+-        }
+-      } else if (self->private_impl.f_chunk_type == 1346585449u) {
+-        if (self->private_impl.f_report_metadata_iccp) {
+-          if (self->private_impl.f_seen_iccp) {
+-            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-            goto exit;
+-          }
+-          if (a_src) {
+-            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-          }
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+-          status = wuffs_png__decoder__decode_iccp(self, a_src);
+-          if (a_src) {
+-            iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-          }
+-          if (status.repr) {
+-            goto suspend;
+-          }
+-          self->private_impl.f_seen_iccp = true;
+-        }
+-      } else if (self->private_impl.f_chunk_type == 1111970419u) {
+-        if (self->private_impl.f_report_metadata_srgb) {
+-          if (self->private_impl.f_seen_srgb) {
+-            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-            goto exit;
+-          }
+-          if (a_src) {
+-            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-          }
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
+-          status = wuffs_png__decoder__decode_srgb(self, a_src);
+-          if (a_src) {
+-            iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-          }
+-          if (status.repr) {
+-            goto suspend;
+-          }
+-          self->private_impl.f_seen_srgb = true;
+-        }
+-      } else if (self->private_impl.f_chunk_type == 1397641844u) {
+-        if (self->private_impl.f_seen_trns || (self->private_impl.f_color_type > 3u) || ((self->private_impl.f_color_type == 3u) &&  ! self->private_impl.f_seen_plte)) {
+-          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-          goto exit;
+-        }
+-        if (a_src) {
+-          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-        }
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
+-        status = wuffs_png__decoder__decode_trns(self, a_src);
+-        if (a_src) {
+-          iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-        }
+-        if (status.repr) {
+-          goto suspend;
+-        }
+-        self->private_impl.f_seen_trns = true;
+-      }
++    v_final_block = true;
++  } else {
++    v_buf_data[v_buf_len] = 128u;
++    v_buf_len += 1u;
++    while (v_buf_len < 64u) {
++      v_buf_data[v_buf_len] = 0u;
++      v_buf_len += 1u;
++    }
++  }
++  v_h0 = self->private_impl.f_h0;
++  v_a = v_h0;
++  v_h1 = self->private_impl.f_h1;
++  v_b = v_h1;
++  v_h2 = self->private_impl.f_h2;
++  v_c = v_h2;
++  v_h3 = self->private_impl.f_h3;
++  v_d = v_h3;
++  v_h4 = self->private_impl.f_h4;
++  v_e = v_h4;
++  v_h5 = self->private_impl.f_h5;
++  v_f = v_h5;
++  v_h6 = self->private_impl.f_h6;
++  v_g = v_h6;
++  v_h7 = self->private_impl.f_h7;
++  v_h = v_h7;
++  while (true) {
++    if (v_final_block) {
++      v_length_in_bits = ((uint64_t)(self->private_impl.f_length_modulo_u64 * 8u));
++      v_buf_data[56u] = ((uint8_t)((v_length_in_bits >> 56u)));
++      v_buf_data[57u] = ((uint8_t)((v_length_in_bits >> 48u)));
++      v_buf_data[58u] = ((uint8_t)((v_length_in_bits >> 40u)));
++      v_buf_data[59u] = ((uint8_t)((v_length_in_bits >> 32u)));
++      v_buf_data[60u] = ((uint8_t)((v_length_in_bits >> 24u)));
++      v_buf_data[61u] = ((uint8_t)((v_length_in_bits >> 16u)));
++      v_buf_data[62u] = ((uint8_t)((v_length_in_bits >> 8u)));
++      v_buf_data[63u] = ((uint8_t)(v_length_in_bits));
++    }
++    v_w[0u] = ((((uint32_t)(v_buf_data[0u])) << 24u) |
++        (((uint32_t)(v_buf_data[1u])) << 16u) |
++        (((uint32_t)(v_buf_data[2u])) << 8u) |
++        ((uint32_t)(v_buf_data[3u])));
++    v_w[1u] = ((((uint32_t)(v_buf_data[4u])) << 24u) |
++        (((uint32_t)(v_buf_data[5u])) << 16u) |
++        (((uint32_t)(v_buf_data[6u])) << 8u) |
++        ((uint32_t)(v_buf_data[7u])));
++    v_w[2u] = ((((uint32_t)(v_buf_data[8u])) << 24u) |
++        (((uint32_t)(v_buf_data[9u])) << 16u) |
++        (((uint32_t)(v_buf_data[10u])) << 8u) |
++        ((uint32_t)(v_buf_data[11u])));
++    v_w[3u] = ((((uint32_t)(v_buf_data[12u])) << 24u) |
++        (((uint32_t)(v_buf_data[13u])) << 16u) |
++        (((uint32_t)(v_buf_data[14u])) << 8u) |
++        ((uint32_t)(v_buf_data[15u])));
++    v_w[4u] = ((((uint32_t)(v_buf_data[16u])) << 24u) |
++        (((uint32_t)(v_buf_data[17u])) << 16u) |
++        (((uint32_t)(v_buf_data[18u])) << 8u) |
++        ((uint32_t)(v_buf_data[19u])));
++    v_w[5u] = ((((uint32_t)(v_buf_data[20u])) << 24u) |
++        (((uint32_t)(v_buf_data[21u])) << 16u) |
++        (((uint32_t)(v_buf_data[22u])) << 8u) |
++        ((uint32_t)(v_buf_data[23u])));
++    v_w[6u] = ((((uint32_t)(v_buf_data[24u])) << 24u) |
++        (((uint32_t)(v_buf_data[25u])) << 16u) |
++        (((uint32_t)(v_buf_data[26u])) << 8u) |
++        ((uint32_t)(v_buf_data[27u])));
++    v_w[7u] = ((((uint32_t)(v_buf_data[28u])) << 24u) |
++        (((uint32_t)(v_buf_data[29u])) << 16u) |
++        (((uint32_t)(v_buf_data[30u])) << 8u) |
++        ((uint32_t)(v_buf_data[31u])));
++    v_w[8u] = ((((uint32_t)(v_buf_data[32u])) << 24u) |
++        (((uint32_t)(v_buf_data[33u])) << 16u) |
++        (((uint32_t)(v_buf_data[34u])) << 8u) |
++        ((uint32_t)(v_buf_data[35u])));
++    v_w[9u] = ((((uint32_t)(v_buf_data[36u])) << 24u) |
++        (((uint32_t)(v_buf_data[37u])) << 16u) |
++        (((uint32_t)(v_buf_data[38u])) << 8u) |
++        ((uint32_t)(v_buf_data[39u])));
++    v_w[10u] = ((((uint32_t)(v_buf_data[40u])) << 24u) |
++        (((uint32_t)(v_buf_data[41u])) << 16u) |
++        (((uint32_t)(v_buf_data[42u])) << 8u) |
++        ((uint32_t)(v_buf_data[43u])));
++    v_w[11u] = ((((uint32_t)(v_buf_data[44u])) << 24u) |
++        (((uint32_t)(v_buf_data[45u])) << 16u) |
++        (((uint32_t)(v_buf_data[46u])) << 8u) |
++        ((uint32_t)(v_buf_data[47u])));
++    v_w[12u] = ((((uint32_t)(v_buf_data[48u])) << 24u) |
++        (((uint32_t)(v_buf_data[49u])) << 16u) |
++        (((uint32_t)(v_buf_data[50u])) << 8u) |
++        ((uint32_t)(v_buf_data[51u])));
++    v_w[13u] = ((((uint32_t)(v_buf_data[52u])) << 24u) |
++        (((uint32_t)(v_buf_data[53u])) << 16u) |
++        (((uint32_t)(v_buf_data[54u])) << 8u) |
++        ((uint32_t)(v_buf_data[55u])));
++    v_w[14u] = ((((uint32_t)(v_buf_data[56u])) << 24u) |
++        (((uint32_t)(v_buf_data[57u])) << 16u) |
++        (((uint32_t)(v_buf_data[58u])) << 8u) |
++        ((uint32_t)(v_buf_data[59u])));
++    v_w[15u] = ((((uint32_t)(v_buf_data[60u])) << 24u) |
++        (((uint32_t)(v_buf_data[61u])) << 16u) |
++        (((uint32_t)(v_buf_data[62u])) << 8u) |
++        ((uint32_t)(v_buf_data[63u])));
++    v_i = 16u;
++    while (v_i < 64u) {
++      v_w2 = v_w[(v_i - 2u)];
++      v_s1 = ((v_w2 >> 10u) ^ (((uint32_t)(v_w2 << 15u)) | (v_w2 >> 17u)) ^ (((uint32_t)(v_w2 << 13u)) | (v_w2 >> 19u)));
++      v_w15 = v_w[(v_i - 15u)];
++      v_s0 = ((v_w15 >> 3u) ^ (((uint32_t)(v_w15 << 25u)) | (v_w15 >> 7u)) ^ (((uint32_t)(v_w15 << 14u)) | (v_w15 >> 18u)));
++      v_w[v_i] = ((uint32_t)(((uint32_t)(((uint32_t)(v_s1 + v_w[(v_i - 7u)])) + v_s0)) + v_w[(v_i - 16u)]));
++      v_i += 1u;
+     }
+-    if (self->private_impl.f_metadata_fourcc == 0u) {
+-      self->private_data.s_decode_other_chunk[0].scratch = self->private_impl.f_chunk_length;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
+-      if (self->private_data.s_decode_other_chunk[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-        self->private_data.s_decode_other_chunk[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-        iop_a_src = io2_a_src;
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      iop_a_src += self->private_data.s_decode_other_chunk[0].scratch;
++    v_i = 0u;
++    while (v_i < 64u) {
++      v_t1 = v_h;
++      v_t1 += ((((uint32_t)(v_e << 26u)) | (v_e >> 6u)) ^ (((uint32_t)(v_e << 21u)) | (v_e >> 11u)) ^ (((uint32_t)(v_e << 7u)) | (v_e >> 25u)));
++      v_t1 += ((v_e & v_f) ^ ((4294967295u ^ v_e) & v_g));
++      v_t1 += WUFFS_SHA256__K[v_i];
++      v_t1 += v_w[v_i];
++      v_t2 = ((((uint32_t)(v_a << 30u)) | (v_a >> 2u)) ^ (((uint32_t)(v_a << 19u)) | (v_a >> 13u)) ^ (((uint32_t)(v_a << 10u)) | (v_a >> 22u)));
++      v_t2 += ((v_a & v_b) ^ (v_a & v_c) ^ (v_b & v_c));
++      v_h = v_g;
++      v_g = v_f;
++      v_f = v_e;
++      v_e = ((uint32_t)(v_d + v_t1));
++      v_d = v_c;
++      v_c = v_b;
++      v_b = v_a;
++      v_a = ((uint32_t)(v_t1 + v_t2));
++      v_i += 1u;
++    }
++    v_a += v_h0;
++    v_b += v_h1;
++    v_c += v_h2;
++    v_d += v_h3;
++    v_e += v_h4;
++    v_f += v_h5;
++    v_g += v_h6;
++    v_h += v_h7;
++    if (v_final_block) {
++      break;
++    }
++    v_final_block = true;
++    v_h0 = v_a;
++    v_h1 = v_b;
++    v_h2 = v_c;
++    v_h3 = v_d;
++    v_h4 = v_e;
++    v_h5 = v_f;
++    v_h6 = v_g;
++    v_h7 = v_h;
++    v_buf_len = 0u;
++    while (v_buf_len < 56u) {
++      v_buf_data[v_buf_len] = 0u;
++      v_buf_len += 1u;
+     }
+-
+-    goto ok;
+-    ok:
+-    self->private_impl.p_decode_other_chunk[0] = 0;
+-    goto exit;
+   }
++  return wuffs_base__utility__make_bitvec256(
++      (((uint64_t)(v_h)) | (((uint64_t)(v_g)) << 32u)),
++      (((uint64_t)(v_f)) | (((uint64_t)(v_e)) << 32u)),
++      (((uint64_t)(v_d)) | (((uint64_t)(v_c)) << 32u)),
++      (((uint64_t)(v_b)) | (((uint64_t)(v_a)) << 32u)));
++}
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_other_chunk[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__SHA256)
+ 
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA)
+ 
+-  return status;
+-}
++// ---------------- Status Codes Implementations
+ 
+-// -------- func png.decoder.decode_actl
++const char wuffs_tga__error__bad_header[] = "#tga: bad header";
++const char wuffs_tga__error__bad_run_length_encoding[] = "#tga: bad run length encoding";
++const char wuffs_tga__error__truncated_input[] = "#tga: truncated input";
++const char wuffs_tga__error__unsupported_tga_file[] = "#tga: unsupported TGA file";
++
++// ---------------- Private Consts
++
++// ---------------- Private Initializer Prototypes
++
++// ---------------- Private Function Prototypes
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_png__decoder__decode_actl(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++wuffs_tga__decoder__do_decode_image_config(
++    wuffs_tga__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src);
+ 
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_tga__decoder__do_decode_frame_config(
++    wuffs_tga__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_tga__decoder__do_decode_frame(
++    wuffs_tga__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts);
++
++// ---------------- VTables
++
++const wuffs_base__image_decoder__func_ptrs
++wuffs_tga__decoder__func_ptrs_for__wuffs_base__image_decoder = {
++  (wuffs_base__status(*)(void*,
++      wuffs_base__pixel_buffer*,
++      wuffs_base__io_buffer*,
++      wuffs_base__pixel_blend,
++      wuffs_base__slice_u8,
++      wuffs_base__decode_frame_options*))(&wuffs_tga__decoder__decode_frame),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__frame_config*,
++      wuffs_base__io_buffer*))(&wuffs_tga__decoder__decode_frame_config),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__image_config*,
++      wuffs_base__io_buffer*))(&wuffs_tga__decoder__decode_image_config),
++  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_tga__decoder__frame_dirty_rect),
++  (uint64_t(*)(const void*,
++      uint32_t))(&wuffs_tga__decoder__get_quirk),
++  (uint32_t(*)(const void*))(&wuffs_tga__decoder__num_animation_loops),
++  (uint64_t(*)(const void*))(&wuffs_tga__decoder__num_decoded_frame_configs),
++  (uint64_t(*)(const void*))(&wuffs_tga__decoder__num_decoded_frames),
++  (wuffs_base__status(*)(void*,
++      uint64_t,
++      uint64_t))(&wuffs_tga__decoder__restart_frame),
++  (wuffs_base__status(*)(void*,
++      uint32_t,
++      uint64_t))(&wuffs_tga__decoder__set_quirk),
++  (wuffs_base__empty_struct(*)(void*,
++      uint32_t,
++      bool))(&wuffs_tga__decoder__set_report_metadata),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__io_buffer*,
++      wuffs_base__more_information*,
++      wuffs_base__io_buffer*))(&wuffs_tga__decoder__tell_me_more),
++  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_tga__decoder__workbuf_len),
++};
++
++// ---------------- Initializer Implementations
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_tga__decoder__initialize(
++    wuffs_tga__decoder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options){
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (sizeof(*self) != sizeof_star_self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  }
++  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
++      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++  }
++
++  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
++    // The whole point of this if-check is to detect an uninitialized *self.
++    // We disable the warning on GCC. Clang-5.0 does not have this warning.
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++#endif
++    if (self->private_impl.magic != 0) {
++      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++    }
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++  } else {
++    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
++      memset(self, 0, sizeof(*self));
++      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
++    } else {
++      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++    }
++  }
++
++  self->private_impl.magic = WUFFS_BASE__MAGIC;
++  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
++      wuffs_base__image_decoder__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
++      (const void*)(&wuffs_tga__decoder__func_ptrs_for__wuffs_base__image_decoder);
++  return wuffs_base__make_status(NULL);
++}
++
++wuffs_tga__decoder*
++wuffs_tga__decoder__alloc(void) {
++  wuffs_tga__decoder* x =
++      (wuffs_tga__decoder*)(calloc(1, sizeof(wuffs_tga__decoder)));
++  if (!x) {
++    return NULL;
++  }
++  if (wuffs_tga__decoder__initialize(
++      x, sizeof(wuffs_tga__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++    free(x);
++    return NULL;
+   }
++  return x;
++}
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_actl[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++size_t
++sizeof__wuffs_tga__decoder(void) {
++  return sizeof(wuffs_tga__decoder);
++}
+ 
+-    if (self->private_impl.f_chunk_length != 8u) {
+-      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-      goto exit;
+-    } else if (self->private_impl.f_interlace_pass > 0u) {
+-      status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
+-      goto exit;
+-    }
+-    self->private_impl.f_chunk_length = 0u;
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      uint32_t t_0;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-        iop_a_src += 4;
+-      } else {
+-        self->private_data.s_decode_actl[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_decode_actl[0].scratch;
+-          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
+-          *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
+-          if (num_bits_0 == 24) {
+-            t_0 = ((uint32_t)(*scratch >> 32));
+-            break;
+-          }
+-          num_bits_0 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_0));
+-        }
+-      }
+-      self->private_impl.f_num_animation_frames_value = t_0;
+-    }
+-    if (self->private_impl.f_num_animation_frames_value == 0u) {
+-      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-      goto exit;
+-    }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-      uint32_t t_1;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-        iop_a_src += 4;
+-      } else {
+-        self->private_data.s_decode_actl[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_decode_actl[0].scratch;
+-          uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
+-          *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
+-          if (num_bits_1 == 24) {
+-            t_1 = ((uint32_t)(*scratch >> 32));
+-            break;
+-          }
+-          num_bits_1 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_1));
+-        }
+-      }
+-      self->private_impl.f_num_animation_loops_value = t_1;
+-    }
++// ---------------- Function Implementations
+ 
+-    goto ok;
+-    ok:
+-    self->private_impl.p_decode_actl[0] = 0;
+-    goto exit;
++// -------- func tga.decoder.get_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_tga__decoder__get_quirk(
++    const wuffs_tga__decoder* self,
++    uint32_t a_key) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
+   }
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_actl[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  return 0u;
++}
+ 
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++// -------- func tga.decoder.set_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_tga__decoder__set_quirk(
++    wuffs_tga__decoder* self,
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
+   }
+ 
+-  return status;
++  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
+ }
+ 
+-// -------- func png.decoder.decode_chrm
++// -------- func tga.decoder.decode_image_config
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__decode_chrm(
+-    wuffs_png__decoder* self,
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_tga__decoder__decode_image_config(
++    wuffs_tga__decoder* self,
++    wuffs_base__image_config* a_dst,
+     wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 1)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint64_t v_u = 0;
+-
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_chrm[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_image_config;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if (self->private_impl.f_chunk_length != 32u) {
+-      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-      goto exit;
+-    }
+-    self->private_impl.f_chunk_length = 0u;
+-    self->private_impl.f_metadata_flavor = 5u;
+-    self->private_impl.f_metadata_fourcc = 1128813133u;
+-    self->private_impl.f_metadata_x = 0u;
+-    self->private_impl.f_metadata_y = 0u;
+-    self->private_impl.f_metadata_z = 0u;
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      uint64_t t_0;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_0 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
+-        iop_a_src += 4;
+-      } else {
+-        self->private_data.s_decode_chrm[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
+-          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
+-          *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
+-          if (num_bits_0 == 24) {
+-            t_0 = ((uint64_t)(*scratch >> 32));
+-            break;
+-          }
+-          num_bits_0 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_0));
+-        }
+-      }
+-      v_u = t_0;
+-    }
+-    self->private_impl.f_metadata_x |= ((16777215u & v_u) << 0u);
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-      uint64_t t_1;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_1 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
+-        iop_a_src += 4;
+-      } else {
+-        self->private_data.s_decode_chrm[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
+-          uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
+-          *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
+-          if (num_bits_1 == 24) {
+-            t_1 = ((uint64_t)(*scratch >> 32));
+-            break;
+-          }
+-          num_bits_1 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_1));
+-        }
+-      }
+-      v_u = t_1;
+-    }
+-    self->private_impl.f_metadata_x |= ((16777215u & v_u) << 24u);
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-      uint64_t t_2;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_2 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
+-        iop_a_src += 4;
+-      } else {
+-        self->private_data.s_decode_chrm[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
+-          uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
+-          *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
+-          if (num_bits_2 == 24) {
+-            t_2 = ((uint64_t)(*scratch >> 32));
+-            break;
+-          }
+-          num_bits_2 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_2));
+-        }
+-      }
+-      v_u = t_2;
+-    }
+-    self->private_impl.f_metadata_x |= ((uint64_t)((16777215u & v_u) << 48u));
+-    self->private_impl.f_metadata_y |= ((16777215u & v_u) >> 16u);
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+-      uint64_t t_3;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_3 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
+-        iop_a_src += 4;
+-      } else {
+-        self->private_data.s_decode_chrm[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
+-          uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
+-          *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
+-          if (num_bits_3 == 24) {
+-            t_3 = ((uint64_t)(*scratch >> 32));
+-            break;
+-          }
+-          num_bits_3 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_3));
+-        }
+-      }
+-      v_u = t_3;
+-    }
+-    self->private_impl.f_metadata_y |= ((16777215u & v_u) << 8u);
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
+-      uint64_t t_4;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_4 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
+-        iop_a_src += 4;
+-      } else {
+-        self->private_data.s_decode_chrm[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
+-          uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
+-          *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4);
+-          if (num_bits_4 == 24) {
+-            t_4 = ((uint64_t)(*scratch >> 32));
+-            break;
+-          }
+-          num_bits_4 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_4));
+-        }
+-      }
+-      v_u = t_4;
+-    }
+-    self->private_impl.f_metadata_y |= ((16777215u & v_u) << 32u);
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
+-      uint64_t t_5;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_5 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
+-        iop_a_src += 4;
+-      } else {
+-        self->private_data.s_decode_chrm[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
+-          uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
+-          *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5);
+-          if (num_bits_5 == 24) {
+-            t_5 = ((uint64_t)(*scratch >> 32));
+-            break;
+-          }
+-          num_bits_5 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_5));
+-        }
+-      }
+-      v_u = t_5;
+-    }
+-    self->private_impl.f_metadata_y |= ((uint64_t)((16777215u & v_u) << 56u));
+-    self->private_impl.f_metadata_z |= ((16777215u & v_u) >> 8u);
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
+-      uint64_t t_6;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_6 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
+-        iop_a_src += 4;
+-      } else {
+-        self->private_data.s_decode_chrm[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
+-          uint32_t num_bits_6 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
+-          *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_6);
+-          if (num_bits_6 == 24) {
+-            t_6 = ((uint64_t)(*scratch >> 32));
+-            break;
+-          }
+-          num_bits_6 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_6));
+-        }
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_tga__decoder__do_decode_image_config(self, a_dst, a_src);
++        v_status = t_0;
+       }
+-      v_u = t_6;
+-    }
+-    self->private_impl.f_metadata_z |= ((16777215u & v_u) << 16u);
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
+-      uint64_t t_7;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_7 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
+-        iop_a_src += 4;
+-      } else {
+-        self->private_data.s_decode_chrm[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
+-          uint32_t num_bits_7 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
+-          *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_7);
+-          if (num_bits_7 == 24) {
+-            t_7 = ((uint64_t)(*scratch >> 32));
+-            break;
+-          }
+-          num_bits_7 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_7));
+-        }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_tga__error__truncated_input);
++        goto exit;
+       }
+-      v_u = t_7;
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+     }
+-    self->private_impl.f_metadata_z |= ((16777215u & v_u) << 40u);
+ 
+-    goto ok;
+     ok:
+-    self->private_impl.p_decode_chrm[0] = 0;
++    self->private_impl.p_decode_image_config = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_chrm[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
+-
+-  return status;
+-}
+-
+-// -------- func png.decoder.decode_exif
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__decode_exif(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
+-
+-  if (self->private_impl.f_chunk_length < 4u) {
+-    status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-    goto exit;
+-  }
+-  self->private_impl.f_metadata_flavor = 3u;
+-  self->private_impl.f_metadata_fourcc = 1163413830u;
+-  self->private_impl.f_metadata_x = 0u;
+-  self->private_impl.f_metadata_y = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
+-  self->private_impl.f_metadata_z = wuffs_base__u64__sat_add(self->private_impl.f_metadata_y, ((uint64_t)(self->private_impl.f_chunk_length)));
+-  self->private_impl.f_chunk_length = 0u;
++  self->private_impl.p_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
+ 
+-  goto ok;
+-  ok:
+   goto exit;
+   exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
+   }
+-
+   return status;
+ }
+ 
+-// -------- func png.decoder.decode_fctl
++// -------- func tga.decoder.do_decode_image_config
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_png__decoder__decode_fctl(
+-    wuffs_png__decoder* self,
++wuffs_tga__decoder__do_decode_image_config(
++    wuffs_tga__decoder* self,
++    wuffs_base__image_config* a_dst,
+     wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t v_x0 = 0;
+-  uint32_t v_y0 = 0;
+-  uint32_t v_x1 = 0;
+-  uint32_t v_y1 = 0;
++  uint32_t v_c32 = 0;
++  uint32_t v_c5 = 0;
++  uint32_t v_i = 0;
+ 
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -55899,309 +69341,577 @@ wuffs_png__decoder__decode_fctl(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_fctl[0];
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config;
+   if (coro_susp_point) {
+-    v_x0 = self->private_data.s_decode_fctl[0].v_x0;
+-    v_x1 = self->private_data.s_decode_fctl[0].v_x1;
+-    v_y1 = self->private_data.s_decode_fctl[0].v_y1;
++    v_i = self->private_data.s_do_decode_image_config.v_i;
+   }
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if (self->private_impl.f_chunk_length != 26u) {
+-      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++    if (self->private_impl.f_call_sequence != 0u) {
++      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
+       goto exit;
+     }
+-    self->private_impl.f_chunk_length = 0u;
+     {
+       WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      uint32_t t_0;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-        iop_a_src += 4;
+-      } else {
+-        self->private_data.s_decode_fctl[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch;
+-          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
+-          *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
+-          if (num_bits_0 == 24) {
+-            t_0 = ((uint32_t)(*scratch >> 32));
+-            break;
+-          }
+-          num_bits_0 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_0));
+-        }
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
+       }
+-      v_x0 = t_0;
++      uint8_t t_0 = *iop_a_src++;
++      self->private_impl.f_header_id_length = t_0;
+     }
+-    if (v_x0 != self->private_impl.f_next_animation_seq_num) {
+-      status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number);
+-      goto exit;
+-    } else if (self->private_impl.f_next_animation_seq_num >= 4294967295u) {
+-      status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_1 = *iop_a_src++;
++      self->private_impl.f_header_color_map_type = t_1;
++    }
++    if (self->private_impl.f_header_color_map_type > 1u) {
++      status = wuffs_base__make_status(wuffs_tga__error__bad_header);
+       goto exit;
+     }
+-    self->private_impl.f_next_animation_seq_num += 1u;
+     {
+       WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-      uint32_t t_1;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-        iop_a_src += 4;
+-      } else {
+-        self->private_data.s_decode_fctl[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch;
+-          uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
+-          *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
+-          if (num_bits_1 == 24) {
+-            t_1 = ((uint32_t)(*scratch >> 32));
+-            break;
+-          }
+-          num_bits_1 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_1));
+-        }
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
+       }
+-      v_x1 = t_1;
++      uint8_t t_2 = *iop_a_src++;
++      self->private_impl.f_header_image_type = t_2;
+     }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-      uint32_t t_2;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_2 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-        iop_a_src += 4;
+-      } else {
+-        self->private_data.s_decode_fctl[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch;
+-          uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
+-          *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
+-          if (num_bits_2 == 24) {
+-            t_2 = ((uint32_t)(*scratch >> 32));
+-            break;
+-          }
+-          num_bits_2 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_2));
+-        }
+-      }
+-      v_y1 = t_2;
++    if ((self->private_impl.f_header_image_type == 1u) ||
++        (self->private_impl.f_header_image_type == 2u) ||
++        (self->private_impl.f_header_image_type == 3u) ||
++        (self->private_impl.f_header_image_type == 9u) ||
++        (self->private_impl.f_header_image_type == 10u) ||
++        (self->private_impl.f_header_image_type == 11u)) {
++    } else {
++      status = wuffs_base__make_status(wuffs_tga__error__bad_header);
++      goto exit;
+     }
+     {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+-      uint32_t t_3;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-        iop_a_src += 4;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++      uint16_t t_3;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++        t_3 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
++        iop_a_src += 2;
+       } else {
+-        self->private_data.s_decode_fctl[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++        self->private_data.s_do_decode_image_config.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+         while (true) {
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch;
+-          uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
++          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++          uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
+           *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
+-          if (num_bits_3 == 24) {
+-            t_3 = ((uint32_t)(*scratch >> 32));
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
++          if (num_bits_3 == 8) {
++            t_3 = ((uint16_t)(*scratch));
+             break;
+           }
+           num_bits_3 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_3));
++          *scratch |= ((uint64_t)(num_bits_3)) << 56;
+         }
+       }
+-      v_x0 = t_3;
++      self->private_impl.f_header_color_map_first_entry_index = t_3;
+     }
+     {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
+-      uint32_t t_4;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_4 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-        iop_a_src += 4;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++      uint16_t t_4;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++        t_4 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
++        iop_a_src += 2;
+       } else {
+-        self->private_data.s_decode_fctl[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
++        self->private_data.s_do_decode_image_config.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+         while (true) {
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch;
+-          uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
++          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++          uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
+           *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4);
+-          if (num_bits_4 == 24) {
+-            t_4 = ((uint32_t)(*scratch >> 32));
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
++          if (num_bits_4 == 8) {
++            t_4 = ((uint16_t)(*scratch));
+             break;
+           }
+           num_bits_4 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_4));
++          *scratch |= ((uint64_t)(num_bits_4)) << 56;
+         }
+       }
+-      v_y0 = t_4;
++      self->private_impl.f_header_color_map_length = t_4;
+     }
+-    v_x1 += v_x0;
+-    v_y1 += v_y0;
+-    if ((v_x0 >= v_x1) ||
+-        (v_x0 > self->private_impl.f_width) ||
+-        (v_x1 > self->private_impl.f_width) ||
+-        (v_y0 >= v_y1) ||
+-        (v_y0 > self->private_impl.f_height) ||
+-        (v_y1 > self->private_impl.f_height)) {
+-      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-      goto exit;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_5 = *iop_a_src++;
++      self->private_impl.f_header_color_map_entry_size = t_5;
+     }
+-    self->private_impl.f_frame_rect_x0 = v_x0;
+-    self->private_impl.f_frame_rect_y0 = v_y0;
+-    self->private_impl.f_frame_rect_x1 = v_x1;
+-    self->private_impl.f_frame_rect_y1 = v_y1;
++    if (self->private_impl.f_header_color_map_type != 0u) {
++      if ((self->private_impl.f_header_color_map_first_entry_index != 0u) || (self->private_impl.f_header_color_map_length > 256u)) {
++        status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file);
++        goto exit;
++      } else if ((self->private_impl.f_header_color_map_entry_size != 15u) &&
++          (self->private_impl.f_header_color_map_entry_size != 16u) &&
++          (self->private_impl.f_header_color_map_entry_size != 24u) &&
++          (self->private_impl.f_header_color_map_entry_size != 32u)) {
++        status = wuffs_base__make_status(wuffs_tga__error__bad_header);
++        goto exit;
++      }
++    } else {
++      if ((self->private_impl.f_header_color_map_first_entry_index != 0u) || (self->private_impl.f_header_color_map_length != 0u) || (self->private_impl.f_header_color_map_entry_size != 0u)) {
++        status = wuffs_base__make_status(wuffs_tga__error__bad_header);
++        goto exit;
++      }
++    }
++    self->private_data.s_do_decode_image_config.scratch = 4u;
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++    if (self->private_data.s_do_decode_image_config.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++      self->private_data.s_do_decode_image_config.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++      iop_a_src = io2_a_src;
++      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++      goto suspend;
++    }
++    iop_a_src += self->private_data.s_do_decode_image_config.scratch;
+     {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
+-      uint32_t t_5;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
++      uint32_t t_6;
+       if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-        t_5 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
++        t_6 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+         iop_a_src += 2;
+       } else {
+-        self->private_data.s_decode_fctl[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
++        self->private_data.s_do_decode_image_config.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
+         while (true) {
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch;
+-          uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
++          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++          uint32_t num_bits_6 = ((uint32_t)(*scratch >> 56));
+           *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5);
+-          if (num_bits_5 == 8) {
+-            t_5 = ((uint32_t)(*scratch >> 48));
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_6;
++          if (num_bits_6 == 8) {
++            t_6 = ((uint32_t)(*scratch));
+             break;
+           }
+-          num_bits_5 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_5));
++          num_bits_6 += 8u;
++          *scratch |= ((uint64_t)(num_bits_6)) << 56;
+         }
+       }
+-      v_x0 = t_5;
++      self->private_impl.f_width = t_6;
+     }
+     {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
+-      uint32_t t_6;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
++      uint32_t t_7;
+       if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-        t_6 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
++        t_7 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+         iop_a_src += 2;
+       } else {
+-        self->private_data.s_decode_fctl[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
++        self->private_data.s_do_decode_image_config.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
+         while (true) {
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch;
+-          uint32_t num_bits_6 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
++          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++          uint32_t num_bits_7 = ((uint32_t)(*scratch >> 56));
+           *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_6);
+-          if (num_bits_6 == 8) {
+-            t_6 = ((uint32_t)(*scratch >> 48));
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_7;
++          if (num_bits_7 == 8) {
++            t_7 = ((uint32_t)(*scratch));
+             break;
+           }
+-          num_bits_6 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_6));
++          num_bits_7 += 8u;
++          *scratch |= ((uint64_t)(num_bits_7)) << 56;
+         }
+       }
+-      v_x1 = t_6;
+-    }
+-    if (v_x1 <= 0u) {
+-      self->private_impl.f_frame_duration = (((uint64_t)(v_x0)) * 7056000u);
+-    } else {
+-      self->private_impl.f_frame_duration = ((((uint64_t)(v_x0)) * 705600000u) / ((uint64_t)(v_x1)));
++      self->private_impl.f_height = t_7;
+     }
+     {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
+       if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+         status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+         goto suspend;
+       }
+-      uint32_t t_7 = *iop_a_src++;
+-      v_x0 = t_7;
++      uint8_t t_8 = *iop_a_src++;
++      self->private_impl.f_header_pixel_depth = t_8;
+     }
+-    if (v_x0 == 0u) {
+-      self->private_impl.f_frame_disposal = 0u;
+-    } else if (v_x0 == 1u) {
+-      self->private_impl.f_frame_disposal = 1u;
+-    } else if (v_x0 == 2u) {
+-      self->private_impl.f_frame_disposal = 2u;
+-    } else {
+-      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++    if ((self->private_impl.f_header_pixel_depth != 1u) &&
++        (self->private_impl.f_header_pixel_depth != 8u) &&
++        (self->private_impl.f_header_pixel_depth != 15u) &&
++        (self->private_impl.f_header_pixel_depth != 16u) &&
++        (self->private_impl.f_header_pixel_depth != 24u) &&
++        (self->private_impl.f_header_pixel_depth != 32u)) {
++      status = wuffs_base__make_status(wuffs_tga__error__bad_header);
+       goto exit;
+     }
++    if (((uint8_t)(self->private_impl.f_header_image_type | 8u)) == 9u) {
++      self->private_impl.f_scratch_bytes_per_pixel = 1u;
++      self->private_impl.f_src_bytes_per_pixel = 1u;
++      self->private_impl.f_src_pixfmt = 2164523016u;
++      self->private_impl.f_opaque = ((self->private_impl.f_header_color_map_entry_size == 15u) || (self->private_impl.f_header_color_map_entry_size == 24u));
++    } else if (((uint8_t)(self->private_impl.f_header_image_type | 8u)) == 10u) {
++      if ((self->private_impl.f_header_pixel_depth == 15u) || (self->private_impl.f_header_pixel_depth == 16u)) {
++        self->private_impl.f_scratch_bytes_per_pixel = 4u;
++        self->private_impl.f_src_bytes_per_pixel = 0u;
++        self->private_impl.f_src_pixfmt = 2164295816u;
++      } else if (self->private_impl.f_header_pixel_depth == 24u) {
++        self->private_impl.f_scratch_bytes_per_pixel = 3u;
++        self->private_impl.f_src_bytes_per_pixel = 3u;
++        self->private_impl.f_src_pixfmt = 2147485832u;
++        self->private_impl.f_opaque = true;
++      } else if (self->private_impl.f_header_pixel_depth == 32u) {
++        self->private_impl.f_scratch_bytes_per_pixel = 4u;
++        self->private_impl.f_src_bytes_per_pixel = 4u;
++        self->private_impl.f_src_pixfmt = 2164295816u;
++      } else {
++        status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file);
++        goto exit;
++      }
++    } else {
++      if (self->private_impl.f_header_pixel_depth == 8u) {
++        self->private_impl.f_scratch_bytes_per_pixel = 1u;
++        self->private_impl.f_src_bytes_per_pixel = 1u;
++        self->private_impl.f_src_pixfmt = 536870920u;
++        self->private_impl.f_opaque = true;
++      } else {
++        status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file);
++        goto exit;
++      }
++    }
+     {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
+       if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+         status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+         goto suspend;
+       }
+-      uint32_t t_8 = *iop_a_src++;
+-      v_x0 = t_8;
+-    }
+-    if (v_x0 == 0u) {
+-      self->private_impl.f_frame_overwrite_instead_of_blend = true;
+-    } else if (v_x0 == 1u) {
+-      self->private_impl.f_frame_overwrite_instead_of_blend = false;
++      uint8_t t_9 = *iop_a_src++;
++      self->private_impl.f_header_image_descriptor = t_9;
++    }
++    if (((uint8_t)(self->private_impl.f_header_image_descriptor & 16u)) != 0u) {
++      status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file);
++      goto exit;
++    }
++    self->private_data.s_do_decode_image_config.scratch = ((uint32_t)(self->private_impl.f_header_id_length));
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
++    if (self->private_data.s_do_decode_image_config.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++      self->private_data.s_do_decode_image_config.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++      iop_a_src = io2_a_src;
++      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++      goto suspend;
++    }
++    iop_a_src += self->private_data.s_do_decode_image_config.scratch;
++    if (self->private_impl.f_header_color_map_type != 0u) {
++      while (v_i < ((uint32_t)(self->private_impl.f_header_color_map_length))) {
++        if (self->private_impl.f_header_color_map_entry_size == 24u) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(17);
++            uint32_t t_10;
++            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
++              t_10 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
++              iop_a_src += 3;
++            } else {
++              self->private_data.s_do_decode_image_config.scratch = 0;
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(18);
++              while (true) {
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++                uint32_t num_bits_10 = ((uint32_t)(*scratch >> 56));
++                *scratch <<= 8;
++                *scratch >>= 8;
++                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_10;
++                if (num_bits_10 == 16) {
++                  t_10 = ((uint32_t)(*scratch));
++                  break;
++                }
++                num_bits_10 += 8u;
++                *scratch |= ((uint64_t)(num_bits_10)) << 56;
++              }
++            }
++            v_c32 = t_10;
++          }
++          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 0u)] = ((uint8_t)((v_c32 >> 0u)));
++          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 1u)] = ((uint8_t)((v_c32 >> 8u)));
++          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 2u)] = ((uint8_t)((v_c32 >> 16u)));
++          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 3u)] = 255u;
++        } else if (self->private_impl.f_header_color_map_entry_size == 32u) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(19);
++            uint32_t t_11;
++            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++              t_11 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++              iop_a_src += 4;
++            } else {
++              self->private_data.s_do_decode_image_config.scratch = 0;
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(20);
++              while (true) {
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++                uint32_t num_bits_11 = ((uint32_t)(*scratch >> 56));
++                *scratch <<= 8;
++                *scratch >>= 8;
++                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_11;
++                if (num_bits_11 == 24) {
++                  t_11 = ((uint32_t)(*scratch));
++                  break;
++                }
++                num_bits_11 += 8u;
++                *scratch |= ((uint64_t)(num_bits_11)) << 56;
++              }
++            }
++            v_c32 = t_11;
++          }
++          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 0u)] = ((uint8_t)((v_c32 >> 0u)));
++          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 1u)] = ((uint8_t)((v_c32 >> 8u)));
++          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 2u)] = ((uint8_t)((v_c32 >> 16u)));
++          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 3u)] = ((uint8_t)((v_c32 >> 24u)));
++        } else {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(21);
++            uint32_t t_12;
++            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++              t_12 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
++              iop_a_src += 2;
++            } else {
++              self->private_data.s_do_decode_image_config.scratch = 0;
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22);
++              while (true) {
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++                uint32_t num_bits_12 = ((uint32_t)(*scratch >> 56));
++                *scratch <<= 8;
++                *scratch >>= 8;
++                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_12;
++                if (num_bits_12 == 8) {
++                  t_12 = ((uint32_t)(*scratch));
++                  break;
++                }
++                num_bits_12 += 8u;
++                *scratch |= ((uint64_t)(num_bits_12)) << 56;
++              }
++            }
++            v_c32 = t_12;
++          }
++          v_c5 = (31u & (v_c32 >> 0u));
++          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 0u)] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
++          v_c5 = (31u & (v_c32 >> 5u));
++          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 1u)] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
++          v_c5 = (31u & (v_c32 >> 10u));
++          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 2u)] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
++          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 3u)] = 255u;
++        }
++        v_i += 1u;
++      }
++      while (v_i < 256u) {
++        self->private_data.f_src_palette[((v_i * 4u) + 0u)] = 0u;
++        self->private_data.f_src_palette[((v_i * 4u) + 1u)] = 0u;
++        self->private_data.f_src_palette[((v_i * 4u) + 2u)] = 0u;
++        self->private_data.f_src_palette[((v_i * 4u) + 3u)] = 255u;
++        v_i += 1u;
++      }
++    }
++    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
++    if (a_dst != NULL) {
++      wuffs_base__image_config__set(
++          a_dst,
++          self->private_impl.f_src_pixfmt,
++          0u,
++          self->private_impl.f_width,
++          self->private_impl.f_height,
++          self->private_impl.f_frame_config_io_position,
++          self->private_impl.f_opaque);
++    }
++    self->private_impl.f_call_sequence = 32u;
++
++    goto ok;
++    ok:
++    self->private_impl.p_do_decode_image_config = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_do_decode_image_config.v_i = v_i;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func tga.decoder.decode_frame_config
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_tga__decoder__decode_frame_config(
++    wuffs_tga__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 2)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_tga__decoder__do_decode_frame_config(self, a_dst, a_src);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_tga__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++
++    ok:
++    self->private_impl.p_decode_frame_config = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func tga.decoder.do_decode_frame_config
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_tga__decoder__do_decode_frame_config(
++    wuffs_tga__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_call_sequence == 32u) {
++    } else if (self->private_impl.f_call_sequence < 32u) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      status = wuffs_tga__decoder__do_decode_image_config(self, NULL, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++    } else if (self->private_impl.f_call_sequence == 40u) {
++      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
++        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
++        goto exit;
++      }
++    } else if (self->private_impl.f_call_sequence == 64u) {
++      self->private_impl.f_call_sequence = 96u;
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
+     } else {
+-      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-      goto exit;
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
+     }
+-    if (self->private_impl.f_num_decoded_frame_configs_value == 0u) {
+-      self->private_impl.f_first_rect_x0 = self->private_impl.f_frame_rect_x0;
+-      self->private_impl.f_first_rect_y0 = self->private_impl.f_frame_rect_y0;
+-      self->private_impl.f_first_rect_x1 = self->private_impl.f_frame_rect_x1;
+-      self->private_impl.f_first_rect_y1 = self->private_impl.f_frame_rect_y1;
+-      self->private_impl.f_first_duration = self->private_impl.f_frame_duration;
+-      self->private_impl.f_first_disposal = self->private_impl.f_frame_disposal;
+-      self->private_impl.f_first_overwrite_instead_of_blend = self->private_impl.f_frame_overwrite_instead_of_blend;
++    if (a_dst != NULL) {
++      wuffs_base__frame_config__set(
++          a_dst,
++          wuffs_base__utility__make_rect_ie_u32(
++          0u,
++          0u,
++          self->private_impl.f_width,
++          self->private_impl.f_height),
++          ((wuffs_base__flicks)(0u)),
++          0u,
++          self->private_impl.f_frame_config_io_position,
++          0u,
++          self->private_impl.f_opaque,
++          false,
++          4278190080u);
+     }
++    self->private_impl.f_call_sequence = 64u;
+ 
+-    goto ok;
+     ok:
+-    self->private_impl.p_decode_fctl[0] = 0;
++    self->private_impl.p_do_decode_frame_config = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_fctl[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_decode_fctl[0].v_x0 = v_x0;
+-  self->private_data.s_decode_fctl[0].v_x1 = v_x1;
+-  self->private_data.s_decode_fctl[0].v_y1 = v_y1;
++  self->private_impl.p_do_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+   goto exit;
+   exit:
+@@ -56212,15 +69922,114 @@ wuffs_png__decoder__decode_fctl(
+   return status;
+ }
+ 
+-// -------- func png.decoder.decode_gama
++// -------- func tga.decoder.decode_frame
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_tga__decoder__decode_frame(
++    wuffs_tga__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_dst || !a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 3)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_frame;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_tga__decoder__do_decode_frame(self,
++            a_dst,
++            a_src,
++            a_blend,
++            a_workbuf,
++            a_opts);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_tga__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++
++    ok:
++    self->private_impl.p_decode_frame = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func tga.decoder.do_decode_frame
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_png__decoder__decode_gama(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
++wuffs_tga__decoder__do_decode_frame(
++    wuffs_tga__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++  wuffs_base__pixel_format v_dst_pixfmt = {0};
++  uint32_t v_dst_bits_per_pixel = 0;
++  uint64_t v_dst_bytes_per_pixel = 0;
++  uint32_t v_dst_x = 0;
++  uint32_t v_dst_y = 0;
++  wuffs_base__table_u8 v_tab = {0};
++  wuffs_base__slice_u8 v_dst_palette = {0};
++  wuffs_base__slice_u8 v_dst = {0};
++  uint64_t v_dst_start = 0;
++  wuffs_base__slice_u8 v_src_palette = {0};
++  uint64_t v_mark = 0;
++  uint64_t v_num_pixels64 = 0;
++  uint32_t v_num_pixels32 = 0;
++  uint32_t v_lit_length = 0;
++  uint32_t v_run_length = 0;
++  uint64_t v_num_dst_bytes = 0;
++  uint32_t v_num_src_bytes = 0;
++  uint32_t v_c32 = 0;
++  uint32_t v_c5 = 0;
++
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -56232,516 +70041,739 @@ wuffs_png__decoder__decode_gama(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_gama[0];
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame;
++  if (coro_susp_point) {
++    v_dst_bytes_per_pixel = self->private_data.s_do_decode_frame.v_dst_bytes_per_pixel;
++    v_dst_x = self->private_data.s_do_decode_frame.v_dst_x;
++    v_dst_y = self->private_data.s_do_decode_frame.v_dst_y;
++    v_mark = self->private_data.s_do_decode_frame.v_mark;
++    v_num_pixels32 = self->private_data.s_do_decode_frame.v_num_pixels32;
++    v_lit_length = self->private_data.s_do_decode_frame.v_lit_length;
++    v_run_length = self->private_data.s_do_decode_frame.v_run_length;
++    v_num_dst_bytes = self->private_data.s_do_decode_frame.v_num_dst_bytes;
++  }
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if (self->private_impl.f_chunk_length != 4u) {
+-      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
++    if (self->private_impl.f_call_sequence == 64u) {
++    } else if (self->private_impl.f_call_sequence < 64u) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      status = wuffs_tga__decoder__do_decode_frame_config(self, NULL, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++    } else {
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
++    }
++    if (self->private_impl.f_header_color_map_type != 0u) {
++      v_src_palette = wuffs_base__make_slice_u8(self->private_data.f_src_palette, 1024);
++    }
++    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
++        wuffs_base__pixel_buffer__pixel_format(a_dst),
++        wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
++        wuffs_base__utility__make_pixel_format(self->private_impl.f_src_pixfmt),
++        v_src_palette,
++        a_blend);
++    if ( ! wuffs_base__status__is_ok(&v_status)) {
++      status = v_status;
++      if (wuffs_base__status__is_error(&status)) {
++        goto exit;
++      } else if (wuffs_base__status__is_suspension(&status)) {
++        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++        goto exit;
++      }
++      goto ok;
++    }
++    v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
++    v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
++    if ((v_dst_bits_per_pixel & 7u) != 0u) {
++      status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
+       goto exit;
+     }
+-    self->private_impl.f_chunk_length = 0u;
+-    self->private_impl.f_metadata_flavor = 5u;
+-    self->private_impl.f_metadata_fourcc = 1195461953u;
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      uint64_t t_0;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-        t_0 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
+-        iop_a_src += 4;
+-      } else {
+-        self->private_data.s_decode_gama[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-        while (true) {
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint64_t* scratch = &self->private_data.s_decode_gama[0].scratch;
+-          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
+-          *scratch >>= 8;
+-          *scratch <<= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
+-          if (num_bits_0 == 24) {
+-            t_0 = ((uint64_t)(*scratch >> 32));
+-            break;
++    v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8u)));
++    if (((uint8_t)(self->private_impl.f_header_image_descriptor & 32u)) == 0u) {
++      v_dst_y = ((uint32_t)(self->private_impl.f_height - 1u));
++    }
++    if (((uint8_t)(self->private_impl.f_header_image_type & 8u)) == 0u) {
++      v_lit_length = self->private_impl.f_width;
++    }
++    label__resume__continue:;
++    while (true) {
++      v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
++      v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024));
++      while (v_dst_y < self->private_impl.f_height) {
++        v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, v_dst_y);
++        v_dst_start = (((uint64_t)(v_dst_x)) * v_dst_bytes_per_pixel);
++        if (v_dst_start <= ((uint64_t)(v_dst.len))) {
++          v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_start);
++        } else {
++          v_dst = wuffs_base__utility__empty_slice_u8();
++        }
++        while (v_dst_x < self->private_impl.f_width) {
++          if (self->private_impl.f_src_bytes_per_pixel > 0u) {
++            if (v_lit_length > 0u) {
++              v_mark = ((uint64_t)(iop_a_src - io0_a_src));
++              v_num_pixels64 = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(self->private_impl.f_src_bytes_per_pixel)));
++              v_num_pixels32 = ((uint32_t)(wuffs_base__u64__min(v_num_pixels64, ((uint64_t)(v_lit_length)))));
++              v_num_dst_bytes = (((uint64_t)(v_num_pixels32)) * v_dst_bytes_per_pixel);
++              v_num_src_bytes = (v_num_pixels32 * self->private_impl.f_src_bytes_per_pixel);
++              self->private_data.s_do_decode_frame.scratch = v_num_src_bytes;
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++              if (self->private_data.s_do_decode_frame.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++                self->private_data.s_do_decode_frame.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++                iop_a_src = io2_a_src;
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              iop_a_src += self->private_data.s_do_decode_frame.scratch;
++              wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_private_impl__io__since(v_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
++              if (v_num_dst_bytes <= ((uint64_t)(v_dst.len))) {
++                v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_num_dst_bytes);
++              } else {
++                v_dst = wuffs_base__utility__empty_slice_u8();
++              }
++              v_dst_x += v_num_pixels32;
++              v_lit_length = (((uint32_t)(v_lit_length - v_num_pixels32)) & 65535u);
++              if (v_lit_length > 0u) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
++                goto label__resume__continue;
++              }
++            } else if (v_run_length > 0u) {
++              v_run_length -= 1u;
++              wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, self->private_impl.f_scratch_bytes_per_pixel));
++              if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) {
++                v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel);
++              }
++              v_dst_x += 1u;
++            } else {
++              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
++                goto label__resume__continue;
++              }
++              if (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) < 128u) {
++                v_lit_length = (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) + 1u);
++                iop_a_src += 1u;
++                if ((v_lit_length + v_dst_x) > self->private_impl.f_width) {
++                  status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding);
++                  goto exit;
++                }
++              } else {
++                if (self->private_impl.f_src_bytes_per_pixel == 1u) {
++                  if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
++                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
++                    goto label__resume__continue;
++                  }
++                  v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127u) + 1u);
++                  iop_a_src += 1u;
++                  self->private_data.f_scratch[0u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++                  iop_a_src += 1u;
++                } else if (self->private_impl.f_src_bytes_per_pixel == 3u) {
++                  if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
++                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
++                    goto label__resume__continue;
++                  }
++                  v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127u) + 1u);
++                  iop_a_src += 1u;
++                  self->private_data.f_scratch[0u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++                  iop_a_src += 1u;
++                  self->private_data.f_scratch[1u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++                  iop_a_src += 1u;
++                  self->private_data.f_scratch[2u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++                  iop_a_src += 1u;
++                } else {
++                  if (((uint64_t)(io2_a_src - iop_a_src)) < 5u) {
++                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
++                    goto label__resume__continue;
++                  }
++                  v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127u) + 1u);
++                  iop_a_src += 1u;
++                  self->private_data.f_scratch[0u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++                  iop_a_src += 1u;
++                  self->private_data.f_scratch[1u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++                  iop_a_src += 1u;
++                  self->private_data.f_scratch[2u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++                  iop_a_src += 1u;
++                  self->private_data.f_scratch[3u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++                  iop_a_src += 1u;
++                }
++                if ((v_run_length + v_dst_x) > self->private_impl.f_width) {
++                  status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding);
++                  goto exit;
++                }
++              }
++            }
++          } else {
++            if (v_lit_length > 0u) {
++              if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
++                goto label__resume__continue;
++              }
++              v_c32 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
++              iop_a_src += 2u;
++              v_c5 = (31u & (v_c32 >> 0u));
++              self->private_data.f_scratch[0u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
++              v_c5 = (31u & (v_c32 >> 5u));
++              self->private_data.f_scratch[1u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
++              v_c5 = (31u & (v_c32 >> 10u));
++              self->private_data.f_scratch[2u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
++              self->private_data.f_scratch[3u] = 255u;
++              wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, 4));
++              if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) {
++                v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel);
++              }
++              v_dst_x += 1u;
++              v_lit_length -= 1u;
++            } else if (v_run_length > 0u) {
++              v_run_length -= 1u;
++              wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, self->private_impl.f_scratch_bytes_per_pixel));
++              if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) {
++                v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel);
++              }
++              v_dst_x += 1u;
++            } else {
++              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
++                goto label__resume__continue;
++              }
++              if (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) < 128u) {
++                v_lit_length = (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) + 1u);
++                iop_a_src += 1u;
++                if ((v_lit_length + v_dst_x) > self->private_impl.f_width) {
++                  status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding);
++                  goto exit;
++                }
++              } else {
++                if (((uint64_t)(io2_a_src - iop_a_src)) < 3u) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
++                  goto label__resume__continue;
++                }
++                v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127u) + 1u);
++                iop_a_src += 1u;
++                v_c32 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
++                iop_a_src += 2u;
++                v_c5 = (31u & (v_c32 >> 0u));
++                self->private_data.f_scratch[0u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
++                v_c5 = (31u & (v_c32 >> 5u));
++                self->private_data.f_scratch[1u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
++                v_c5 = (31u & (v_c32 >> 10u));
++                self->private_data.f_scratch[2u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
++                self->private_data.f_scratch[3u] = 255u;
++                if ((v_run_length + v_dst_x) > self->private_impl.f_width) {
++                  status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding);
++                  goto exit;
++                }
++              }
++            }
+           }
+-          num_bits_0 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_0));
++        }
++        v_dst_x = 0u;
++        if (((uint8_t)(self->private_impl.f_header_image_descriptor & 32u)) == 0u) {
++          v_dst_y -= 1u;
++        } else {
++          v_dst_y += 1u;
++        }
++        if (((uint8_t)(self->private_impl.f_header_image_type & 8u)) == 0u) {
++          v_lit_length = self->private_impl.f_width;
+         }
+       }
+-      self->private_impl.f_metadata_x = t_0;
++      break;
+     }
+-    self->private_impl.f_metadata_y = 0u;
+-    self->private_impl.f_metadata_z = 0u;
++    self->private_impl.f_call_sequence = 96u;
++
++    ok:
++    self->private_impl.p_do_decode_frame = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_do_decode_frame.v_dst_bytes_per_pixel = v_dst_bytes_per_pixel;
++  self->private_data.s_do_decode_frame.v_dst_x = v_dst_x;
++  self->private_data.s_do_decode_frame.v_dst_y = v_dst_y;
++  self->private_data.s_do_decode_frame.v_mark = v_mark;
++  self->private_data.s_do_decode_frame.v_num_pixels32 = v_num_pixels32;
++  self->private_data.s_do_decode_frame.v_lit_length = v_lit_length;
++  self->private_data.s_do_decode_frame.v_run_length = v_run_length;
++  self->private_data.s_do_decode_frame.v_num_dst_bytes = v_num_dst_bytes;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func tga.decoder.frame_dirty_rect
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
++wuffs_tga__decoder__frame_dirty_rect(
++    const wuffs_tga__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_rect_ie_u32();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_rect_ie_u32();
++  }
++
++  return wuffs_base__utility__make_rect_ie_u32(
++      0u,
++      0u,
++      self->private_impl.f_width,
++      self->private_impl.f_height);
++}
++
++// -------- func tga.decoder.num_animation_loops
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_tga__decoder__num_animation_loops(
++    const wuffs_tga__decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  return 0u;
++}
++
++// -------- func tga.decoder.num_decoded_frame_configs
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_tga__decoder__num_decoded_frame_configs(
++    const wuffs_tga__decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  if (self->private_impl.f_call_sequence > 32u) {
++    return 1u;
++  }
++  return 0u;
++}
++
++// -------- func tga.decoder.num_decoded_frames
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_tga__decoder__num_decoded_frames(
++    const wuffs_tga__decoder* self) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  if (self->private_impl.f_call_sequence > 64u) {
++    return 1u;
++  }
++  return 0u;
++}
++
++// -------- func tga.decoder.restart_frame
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_tga__decoder__restart_frame(
++    wuffs_tga__decoder* self,
++    uint64_t a_index,
++    uint64_t a_io_position) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++
++  if (self->private_impl.f_call_sequence < 32u) {
++    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
++  }
++  if (a_index != 0u) {
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  self->private_impl.f_call_sequence = 40u;
++  self->private_impl.f_frame_config_io_position = a_io_position;
++  return wuffs_base__make_status(NULL);
++}
+ 
+-    goto ok;
+-    ok:
+-    self->private_impl.p_decode_gama[0] = 0;
+-    goto exit;
++// -------- func tga.decoder.set_report_metadata
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_tga__decoder__set_report_metadata(
++    wuffs_tga__decoder* self,
++    uint32_t a_fourcc,
++    bool a_report) {
++  return wuffs_base__make_empty_struct();
++}
++
++// -------- func tga.decoder.tell_me_more
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_tga__decoder__tell_me_more(
++    wuffs_tga__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__more_information* a_minfo,
++    wuffs_base__io_buffer* a_src) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_dst || !a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 4)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_gama[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  status = wuffs_base__make_status(wuffs_base__error__no_more_information);
++  goto exit;
+ 
++  goto ok;
++  ok:
+   goto exit;
+   exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
+   }
+-
+   return status;
+ }
+ 
+-// -------- func png.decoder.decode_iccp
++// -------- func tga.decoder.workbuf_len
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__decode_iccp(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  uint8_t v_c = 0;
+-
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_tga__decoder__workbuf_len(
++    const wuffs_tga__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_range_ii_u64();
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_iccp[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
++}
+ 
+-    while (true) {
+-      if (self->private_impl.f_chunk_length <= 0u) {
+-        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-        goto exit;
+-      }
+-      self->private_impl.f_chunk_length -= 1u;
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
+-        }
+-        uint8_t t_0 = *iop_a_src++;
+-        v_c = t_0;
+-      }
+-      if (v_c == 0u) {
+-        break;
+-      }
+-    }
+-    if (self->private_impl.f_chunk_length <= 0u) {
+-      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-      goto exit;
+-    }
+-    self->private_impl.f_chunk_length -= 1u;
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_1 = *iop_a_src++;
+-      v_c = t_1;
+-    }
+-    if (v_c != 0u) {
+-      status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method);
+-      goto exit;
+-    }
+-    self->private_impl.f_metadata_is_zlib_compressed = true;
+-    self->private_impl.f_metadata_flavor = 4u;
+-    self->private_impl.f_metadata_fourcc = 1229144912u;
+-    self->private_impl.f_metadata_x = 0u;
+-    self->private_impl.f_metadata_y = 0u;
+-    self->private_impl.f_metadata_z = 0u;
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA)
+ 
+-    goto ok;
+-    ok:
+-    self->private_impl.p_decode_iccp[0] = 0;
+-    goto exit;
+-  }
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__VP8)
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_iccp[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++// ---------------- Status Codes Implementations
+ 
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
++// ---------------- Private Consts
+ 
+-  return status;
+-}
++// ---------------- Private Initializer Prototypes
+ 
+-// -------- func png.decoder.decode_plte
++// ---------------- Private Function Prototypes
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__decode_plte(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++// ---------------- VTables
+ 
+-  uint32_t v_num_entries = 0;
+-  uint32_t v_i = 0;
+-  uint32_t v_argb = 0;
++// ---------------- Initializer Implementations
+ 
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_vp8__placeholder__initialize(
++    wuffs_vp8__placeholder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options){
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+-
+-  uint32_t coro_susp_point = self->private_impl.p_decode_plte[0];
+-  if (coro_susp_point) {
+-    v_num_entries = self->private_data.s_decode_plte[0].v_num_entries;
+-    v_i = self->private_data.s_decode_plte[0].v_i;
++  if (sizeof(*self) != sizeof_star_self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  }
++  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
++      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
+   }
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if ((self->private_impl.f_chunk_length > 768u) || ((self->private_impl.f_chunk_length % 3u) != 0u)) {
+-      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-      goto exit;
+-    }
+-    v_num_entries = (((uint32_t)(self->private_impl.f_chunk_length)) / 3u);
+-    self->private_impl.f_chunk_length = 0u;
+-    while (v_i < v_num_entries) {
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-        uint32_t t_0;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
+-          t_0 = ((uint32_t)(wuffs_base__peek_u24be__no_bounds_check(iop_a_src)));
+-          iop_a_src += 3;
+-        } else {
+-          self->private_data.s_decode_plte[0].scratch = 0;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint64_t* scratch = &self->private_data.s_decode_plte[0].scratch;
+-            uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
+-            *scratch >>= 8;
+-            *scratch <<= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
+-            if (num_bits_0 == 16) {
+-              t_0 = ((uint32_t)(*scratch >> 40));
+-              break;
+-            }
+-            num_bits_0 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_0));
+-          }
+-        }
+-        v_argb = t_0;
+-      }
+-      v_argb |= 4278190080u;
+-      self->private_data.f_src_palette[((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u)));
+-      self->private_data.f_src_palette[((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u)));
+-      self->private_data.f_src_palette[((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u)));
+-      self->private_data.f_src_palette[((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u)));
+-      v_i += 1u;
++  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
++    // The whole point of this if-check is to detect an uninitialized *self.
++    // We disable the warning on GCC. Clang-5.0 does not have this warning.
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++#endif
++    if (self->private_impl.magic != 0) {
++      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
+     }
+-    while (v_i < 256u) {
+-      self->private_data.f_src_palette[((4u * v_i) + 0u)] = 0u;
+-      self->private_data.f_src_palette[((4u * v_i) + 1u)] = 0u;
+-      self->private_data.f_src_palette[((4u * v_i) + 2u)] = 0u;
+-      self->private_data.f_src_palette[((4u * v_i) + 3u)] = 255u;
+-      v_i += 1u;
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++  } else {
++    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
++      memset(self, 0, sizeof(*self));
++      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
++    } else {
++      memset(&(self->private_impl), 0, sizeof(self->private_impl));
+     }
+-
+-    goto ok;
+-    ok:
+-    self->private_impl.p_decode_plte[0] = 0;
+-    goto exit;
+   }
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_plte[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_decode_plte[0].v_num_entries = v_num_entries;
+-  self->private_data.s_decode_plte[0].v_i = v_i;
++  self->private_impl.magic = WUFFS_BASE__MAGIC;
++  return wuffs_base__make_status(NULL);
++}
+ 
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++wuffs_vp8__placeholder*
++wuffs_vp8__placeholder__alloc(void) {
++  wuffs_vp8__placeholder* x =
++      (wuffs_vp8__placeholder*)(calloc(1, sizeof(wuffs_vp8__placeholder)));
++  if (!x) {
++    return NULL;
+   }
+-
+-  return status;
++  if (wuffs_vp8__placeholder__initialize(
++      x, sizeof(wuffs_vp8__placeholder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++    free(x);
++    return NULL;
++  }
++  return x;
+ }
+ 
+-// -------- func png.decoder.decode_srgb
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__decode_srgb(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++size_t
++sizeof__wuffs_vp8__placeholder(void) {
++  return sizeof(wuffs_vp8__placeholder);
++}
+ 
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
++// ---------------- Function Implementations
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_srgb[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__VP8)
+ 
+-    if (self->private_impl.f_chunk_length != 1u) {
+-      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-      goto exit;
+-    }
+-    self->private_impl.f_chunk_length = 0u;
+-    self->private_impl.f_metadata_flavor = 5u;
+-    self->private_impl.f_metadata_fourcc = 1397901122u;
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint64_t t_0 = *iop_a_src++;
+-      self->private_impl.f_metadata_x = t_0;
+-    }
+-    self->private_impl.f_metadata_y = 0u;
+-    self->private_impl.f_metadata_z = 0u;
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP)
+ 
+-    goto ok;
+-    ok:
+-    self->private_impl.p_decode_srgb[0] = 0;
+-    goto exit;
+-  }
++// ---------------- Status Codes Implementations
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_srgb[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++const char wuffs_wbmp__error__bad_header[] = "#wbmp: bad header";
++const char wuffs_wbmp__error__truncated_input[] = "#wbmp: truncated input";
+ 
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
++// ---------------- Private Consts
+ 
+-  return status;
+-}
++// ---------------- Private Initializer Prototypes
+ 
+-// -------- func png.decoder.decode_trns
++// ---------------- Private Function Prototypes
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_png__decoder__decode_trns(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++wuffs_wbmp__decoder__do_decode_image_config(
++    wuffs_wbmp__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src);
+ 
+-  uint32_t v_i = 0;
+-  uint32_t v_n = 0;
+-  uint64_t v_u = 0;
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_wbmp__decoder__do_decode_frame_config(
++    wuffs_wbmp__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src);
+ 
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_wbmp__decoder__do_decode_frame(
++    wuffs_wbmp__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts);
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_trns[0];
+-  if (coro_susp_point) {
+-    v_i = self->private_data.s_decode_trns[0].v_i;
+-    v_n = self->private_data.s_decode_trns[0].v_n;
+-  }
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++// ---------------- VTables
+ 
+-    if (self->private_impl.f_color_type == 0u) {
+-      self->private_impl.choosy_filter_and_swizzle = (
+-          &wuffs_png__decoder__filter_and_swizzle_tricky);
+-      if (self->private_impl.f_depth <= 8u) {
+-        self->private_impl.f_dst_pixfmt = 2164295816u;
+-        self->private_impl.f_src_pixfmt = 2164295816u;
+-      } else {
+-        self->private_impl.f_dst_pixfmt = 2164308923u;
+-        self->private_impl.f_src_pixfmt = 2164308923u;
+-      }
+-      if (self->private_impl.f_chunk_length != 2u) {
+-        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-        goto exit;
+-      }
+-      self->private_impl.f_chunk_length = 0u;
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-        uint64_t t_0;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-          t_0 = ((uint64_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
+-          iop_a_src += 2;
+-        } else {
+-          self->private_data.s_decode_trns[0].scratch = 0;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint64_t* scratch = &self->private_data.s_decode_trns[0].scratch;
+-            uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
+-            *scratch >>= 8;
+-            *scratch <<= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
+-            if (num_bits_0 == 8) {
+-              t_0 = ((uint64_t)(*scratch >> 48));
+-              break;
+-            }
+-            num_bits_0 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_0));
+-          }
+-        }
+-        v_u = t_0;
+-      }
+-      if (self->private_impl.f_depth <= 1u) {
+-        self->private_impl.f_remap_transparency = (((v_u & 1u) * 16777215u) | 4278190080u);
+-      } else if (self->private_impl.f_depth <= 2u) {
+-        self->private_impl.f_remap_transparency = (((v_u & 3u) * 5592405u) | 4278190080u);
+-      } else if (self->private_impl.f_depth <= 4u) {
+-        self->private_impl.f_remap_transparency = (((v_u & 15u) * 1118481u) | 4278190080u);
+-      } else if (self->private_impl.f_depth <= 8u) {
+-        self->private_impl.f_remap_transparency = (((v_u & 255u) * 65793u) | 4278190080u);
+-      } else {
+-        self->private_impl.f_remap_transparency = ((v_u * 4295032833u) | 18446462598732840960u);
+-      }
+-    } else if (self->private_impl.f_color_type == 2u) {
+-      self->private_impl.choosy_filter_and_swizzle = (
+-          &wuffs_png__decoder__filter_and_swizzle_tricky);
+-      if (self->private_impl.f_depth <= 8u) {
+-        self->private_impl.f_dst_pixfmt = 2164295816u;
+-        self->private_impl.f_src_pixfmt = 2164295816u;
+-      } else {
+-        self->private_impl.f_dst_pixfmt = 2164308923u;
+-        self->private_impl.f_src_pixfmt = 2164308923u;
+-      }
+-      if (self->private_impl.f_chunk_length != 6u) {
+-        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-        goto exit;
+-      }
+-      self->private_impl.f_chunk_length = 0u;
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-        uint64_t t_1;
+-        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 6)) {
+-          t_1 = ((uint64_t)(wuffs_base__peek_u48be__no_bounds_check(iop_a_src)));
+-          iop_a_src += 6;
+-        } else {
+-          self->private_data.s_decode_trns[0].scratch = 0;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-          while (true) {
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint64_t* scratch = &self->private_data.s_decode_trns[0].scratch;
+-            uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
+-            *scratch >>= 8;
+-            *scratch <<= 8;
+-            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
+-            if (num_bits_1 == 40) {
+-              t_1 = ((uint64_t)(*scratch >> 16));
+-              break;
+-            }
+-            num_bits_1 += 8u;
+-            *scratch |= ((uint64_t)(num_bits_1));
+-          }
+-        }
+-        v_u = t_1;
+-      }
+-      if (self->private_impl.f_depth <= 8u) {
+-        self->private_impl.f_remap_transparency = ((255u & (v_u >> 0u)) |
+-            (65280u & (v_u >> 8u)) |
+-            (16711680u & (v_u >> 16u)) |
+-            4278190080u);
+-      } else {
+-        self->private_impl.f_remap_transparency = (v_u | 18446462598732840960u);
+-      }
+-    } else if (self->private_impl.f_color_type == 3u) {
+-      self->private_impl.f_dst_pixfmt = 2164523016u;
+-      self->private_impl.f_src_pixfmt = 2164523016u;
+-      if (self->private_impl.f_chunk_length > 256u) {
+-        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-        goto exit;
+-      }
+-      v_n = ((uint32_t)(self->private_impl.f_chunk_length));
+-      self->private_impl.f_chunk_length = 0u;
+-      while (v_i < v_n) {
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint8_t t_2 = *iop_a_src++;
+-          self->private_data.f_src_palette[((4u * v_i) + 3u)] = t_2;
+-        }
+-        v_i += 1u;
+-      }
++const wuffs_base__image_decoder__func_ptrs
++wuffs_wbmp__decoder__func_ptrs_for__wuffs_base__image_decoder = {
++  (wuffs_base__status(*)(void*,
++      wuffs_base__pixel_buffer*,
++      wuffs_base__io_buffer*,
++      wuffs_base__pixel_blend,
++      wuffs_base__slice_u8,
++      wuffs_base__decode_frame_options*))(&wuffs_wbmp__decoder__decode_frame),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__frame_config*,
++      wuffs_base__io_buffer*))(&wuffs_wbmp__decoder__decode_frame_config),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__image_config*,
++      wuffs_base__io_buffer*))(&wuffs_wbmp__decoder__decode_image_config),
++  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_wbmp__decoder__frame_dirty_rect),
++  (uint64_t(*)(const void*,
++      uint32_t))(&wuffs_wbmp__decoder__get_quirk),
++  (uint32_t(*)(const void*))(&wuffs_wbmp__decoder__num_animation_loops),
++  (uint64_t(*)(const void*))(&wuffs_wbmp__decoder__num_decoded_frame_configs),
++  (uint64_t(*)(const void*))(&wuffs_wbmp__decoder__num_decoded_frames),
++  (wuffs_base__status(*)(void*,
++      uint64_t,
++      uint64_t))(&wuffs_wbmp__decoder__restart_frame),
++  (wuffs_base__status(*)(void*,
++      uint32_t,
++      uint64_t))(&wuffs_wbmp__decoder__set_quirk),
++  (wuffs_base__empty_struct(*)(void*,
++      uint32_t,
++      bool))(&wuffs_wbmp__decoder__set_report_metadata),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__io_buffer*,
++      wuffs_base__more_information*,
++      wuffs_base__io_buffer*))(&wuffs_wbmp__decoder__tell_me_more),
++  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_wbmp__decoder__workbuf_len),
++};
++
++// ---------------- Initializer Implementations
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_wbmp__decoder__initialize(
++    wuffs_wbmp__decoder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options){
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (sizeof(*self) != sizeof_star_self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  }
++  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
++      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++  }
++
++  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
++    // The whole point of this if-check is to detect an uninitialized *self.
++    // We disable the warning on GCC. Clang-5.0 does not have this warning.
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++#endif
++    if (self->private_impl.magic != 0) {
++      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++    }
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++  } else {
++    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
++      memset(self, 0, sizeof(*self));
++      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
+     } else {
+-      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-      goto exit;
++      memset(&(self->private_impl), 0, sizeof(self->private_impl));
+     }
++  }
+ 
+-    goto ok;
+-    ok:
+-    self->private_impl.p_decode_trns[0] = 0;
+-    goto exit;
++  self->private_impl.magic = WUFFS_BASE__MAGIC;
++  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
++      wuffs_base__image_decoder__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
++      (const void*)(&wuffs_wbmp__decoder__func_ptrs_for__wuffs_base__image_decoder);
++  return wuffs_base__make_status(NULL);
++}
++
++wuffs_wbmp__decoder*
++wuffs_wbmp__decoder__alloc(void) {
++  wuffs_wbmp__decoder* x =
++      (wuffs_wbmp__decoder*)(calloc(1, sizeof(wuffs_wbmp__decoder)));
++  if (!x) {
++    return NULL;
++  }
++  if (wuffs_wbmp__decoder__initialize(
++      x, sizeof(wuffs_wbmp__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++    free(x);
++    return NULL;
+   }
++  return x;
++}
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_trns[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_decode_trns[0].v_i = v_i;
+-  self->private_data.s_decode_trns[0].v_n = v_n;
++size_t
++sizeof__wuffs_wbmp__decoder(void) {
++  return sizeof(wuffs_wbmp__decoder);
++}
+ 
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++// ---------------- Function Implementations
++
++// -------- func wbmp.decoder.get_quirk
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_wbmp__decoder__get_quirk(
++    const wuffs_wbmp__decoder* self,
++    uint32_t a_key) {
++  if (!self) {
++    return 0;
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
+   }
+ 
+-  return status;
++  return 0u;
+ }
+ 
+-// -------- func png.decoder.decode_frame_config
++// -------- func wbmp.decoder.set_quirk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_png__decoder__decode_frame_config(
+-    wuffs_png__decoder* self,
+-    wuffs_base__frame_config* a_dst,
++wuffs_wbmp__decoder__set_quirk(
++    wuffs_wbmp__decoder* self,
++    uint32_t a_key,
++    uint64_t a_value) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++
++  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++}
++
++// -------- func wbmp.decoder.decode_image_config
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_wbmp__decoder__decode_image_config(
++    wuffs_wbmp__decoder* self,
++    wuffs_base__image_config* a_dst,
+     wuffs_base__io_buffer* a_src) {
+   if (!self) {
+     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+@@ -56757,7 +70789,7 @@ wuffs_png__decoder__decode_frame_config(
+     return wuffs_base__make_status(wuffs_base__error__bad_argument);
+   }
+   if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 2)) {
++      (self->private_impl.active_coroutine != 1)) {
+     self->private_impl.magic = WUFFS_BASE__DISABLED;
+     return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+   }
+@@ -56766,17 +70798,17 @@ wuffs_png__decoder__decode_frame_config(
+ 
+   wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_image_config;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+     while (true) {
+       {
+-        wuffs_base__status t_0 = wuffs_png__decoder__do_decode_frame_config(self, a_dst, a_src);
++        wuffs_base__status t_0 = wuffs_wbmp__decoder__do_decode_image_config(self, a_dst, a_src);
+         v_status = t_0;
+       }
+       if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_png__error__truncated_input);
++        status = wuffs_base__make_status(wuffs_wbmp__error__truncated_input);
+         goto exit;
+       }
+       status = v_status;
+@@ -56784,14 +70816,14 @@ wuffs_png__decoder__decode_frame_config(
+     }
+ 
+     ok:
+-    self->private_impl.p_decode_frame_config[0] = 0;
++    self->private_impl.p_decode_image_config = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
++  self->private_impl.p_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
+ 
+   goto exit;
+   exit:
+@@ -56801,17 +70833,19 @@ wuffs_png__decoder__decode_frame_config(
+   return status;
+ }
+ 
+-// -------- func png.decoder.do_decode_frame_config
++// -------- func wbmp.decoder.do_decode_image_config
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_png__decoder__do_decode_frame_config(
+-    wuffs_png__decoder* self,
+-    wuffs_base__frame_config* a_dst,
++wuffs_wbmp__decoder__do_decode_image_config(
++    wuffs_wbmp__decoder* self,
++    wuffs_base__image_config* a_dst,
+     wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t v_checksum_have = 0;
++  uint8_t v_c8 = 0;
++  uint32_t v_i = 0;
++  uint32_t v_p = 0;
+ 
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -56824,392 +70858,88 @@ wuffs_png__decoder__do_decode_frame_config(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0];
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config;
++  if (coro_susp_point) {
++    v_i = self->private_data.s_do_decode_image_config.v_i;
++    v_p = self->private_data.s_do_decode_image_config.v_p;
++  }
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if ((self->private_impl.f_call_sequence & 16u) != 0u) {
++    if (self->private_impl.f_call_sequence != 0u) {
+       status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
+       goto exit;
+-    } else if (self->private_impl.f_call_sequence == 32u) {
+-    } else if (self->private_impl.f_call_sequence < 32u) {
+-      if (a_src) {
+-        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-      }
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      status = wuffs_png__decoder__do_decode_image_config(self, NULL, a_src);
+-      if (a_src) {
+-        iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-      }
+-      if (status.repr) {
+-        goto suspend;
+-      }
+-    } else if (self->private_impl.f_call_sequence == 40u) {
+-      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
+-        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
+-        goto exit;
+-      }
+-    } else if (self->private_impl.f_call_sequence == 64u) {
+-      if (a_src) {
+-        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-      }
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-      status = wuffs_png__decoder__skip_frame(self, a_src);
+-      if (a_src) {
+-        iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-      }
+-      if (status.repr) {
+-        goto suspend;
+-      }
+-    } else {
+-      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-      goto ok;
+-    }
+-    if (self->private_impl.f_metadata_fourcc != 0u) {
+-      self->private_impl.f_call_sequence = 48u;
+-      status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
+-      goto ok;
+     }
+-    if (self->private_impl.f_num_decoded_frame_configs_value == 0u) {
+-      self->private_impl.f_frame_rect_x0 = self->private_impl.f_first_rect_x0;
+-      self->private_impl.f_frame_rect_y0 = self->private_impl.f_first_rect_y0;
+-      self->private_impl.f_frame_rect_x1 = self->private_impl.f_first_rect_x1;
+-      self->private_impl.f_frame_rect_y1 = self->private_impl.f_first_rect_y1;
+-      self->private_impl.f_frame_config_io_position = self->private_impl.f_first_config_io_position;
+-      self->private_impl.f_frame_duration = self->private_impl.f_first_duration;
+-      self->private_impl.f_frame_disposal = self->private_impl.f_first_disposal;
+-      self->private_impl.f_frame_overwrite_instead_of_blend = self->private_impl.f_first_overwrite_instead_of_blend;
+-    } else {
+-      while (true) {
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-          uint32_t t_0;
+-          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-            t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-            iop_a_src += 4;
+-          } else {
+-            self->private_data.s_do_decode_frame_config[0].scratch = 0;
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-            while (true) {
+-              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                goto suspend;
+-              }
+-              uint64_t* scratch = &self->private_data.s_do_decode_frame_config[0].scratch;
+-              uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
+-              *scratch >>= 8;
+-              *scratch <<= 8;
+-              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
+-              if (num_bits_0 == 24) {
+-                t_0 = ((uint32_t)(*scratch >> 32));
+-                break;
+-              }
+-              num_bits_0 += 8u;
+-              *scratch |= ((uint64_t)(num_bits_0));
+-            }
+-          }
+-          self->private_impl.f_chunk_length = t_0;
+-        }
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-          uint32_t t_1;
+-          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-            t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-            iop_a_src += 4;
+-          } else {
+-            self->private_data.s_do_decode_frame_config[0].scratch = 0;
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-            while (true) {
+-              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                goto suspend;
+-              }
+-              uint64_t* scratch = &self->private_data.s_do_decode_frame_config[0].scratch;
+-              uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
+-              *scratch <<= 8;
+-              *scratch >>= 8;
+-              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
+-              if (num_bits_1 == 24) {
+-                t_1 = ((uint32_t)(*scratch));
+-                break;
+-              }
+-              num_bits_1 += 8u;
+-              *scratch |= ((uint64_t)(num_bits_1)) << 56;
+-            }
+-          }
+-          self->private_impl.f_chunk_type = t_1;
+-        }
+-        if (self->private_impl.f_chunk_type == 1145980233u) {
+-          if (self->private_impl.f_chunk_length != 0u) {
+-            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-            goto exit;
+-          }
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+-            uint32_t t_2;
+-            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-              t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-              iop_a_src += 4;
+-            } else {
+-              self->private_data.s_do_decode_frame_config[0].scratch = 0;
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
+-              while (true) {
+-                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                  goto suspend;
+-                }
+-                uint64_t* scratch = &self->private_data.s_do_decode_frame_config[0].scratch;
+-                uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
+-                *scratch <<= 8;
+-                *scratch >>= 8;
+-                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
+-                if (num_bits_2 == 24) {
+-                  t_2 = ((uint32_t)(*scratch));
+-                  break;
+-                }
+-                num_bits_2 += 8u;
+-                *scratch |= ((uint64_t)(num_bits_2)) << 56;
+-              }
+-            }
+-            v_checksum_have = t_2;
+-          }
+-          if ( ! self->private_impl.f_ignore_checksum && (v_checksum_have != 2187346606u)) {
+-            status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
+-            goto exit;
+-          }
+-          self->private_impl.f_call_sequence = 96u;
+-          status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-          goto ok;
+-        } else if (self->private_impl.f_chunk_type == 1413571686u) {
+-          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-          goto exit;
+-        } else if (self->private_impl.f_chunk_type == 1280598886u) {
+-          self->private_impl.f_frame_config_io_position = ((uint64_t)(wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))) - 8u));
+-          if (a_src) {
+-            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-          }
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
+-          status = wuffs_png__decoder__decode_fctl(self, a_src);
+-          if (a_src) {
+-            iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-          }
+-          if (status.repr) {
+-            goto suspend;
+-          }
+-          self->private_data.s_do_decode_frame_config[0].scratch = 4u;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
+-          if (self->private_data.s_do_decode_frame_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-            self->private_data.s_do_decode_frame_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-            iop_a_src = io2_a_src;
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          iop_a_src += self->private_data.s_do_decode_frame_config[0].scratch;
+-          break;
+-        }
+-        if (a_src) {
+-          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-        }
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
+-        status = wuffs_png__decoder__decode_other_chunk(self, a_src, true);
+-        if (a_src) {
+-          iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-        }
+-        if (status.repr) {
+-          goto suspend;
+-        }
+-        if (self->private_impl.f_metadata_fourcc != 0u) {
+-          self->private_impl.f_call_sequence = 48u;
+-          status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
+-          goto ok;
+-        }
+-        self->private_data.s_do_decode_frame_config[0].scratch = 4u;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
+-        if (self->private_data.s_do_decode_frame_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-          self->private_data.s_do_decode_frame_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-          iop_a_src = io2_a_src;
++    v_i = 0u;
++    while (v_i < 2u) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+           status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+           goto suspend;
+         }
+-        iop_a_src += self->private_data.s_do_decode_frame_config[0].scratch;
+-        self->private_impl.f_chunk_length = 0u;
++        uint8_t t_0 = *iop_a_src++;
++        v_c8 = t_0;
+       }
+-    }
+-    if (a_dst != NULL) {
+-      wuffs_base__frame_config__set(
+-          a_dst,
+-          wuffs_base__utility__make_rect_ie_u32(
+-          self->private_impl.f_frame_rect_x0,
+-          self->private_impl.f_frame_rect_y0,
+-          self->private_impl.f_frame_rect_x1,
+-          self->private_impl.f_frame_rect_y1),
+-          ((wuffs_base__flicks)(self->private_impl.f_frame_duration)),
+-          ((uint64_t)(self->private_impl.f_num_decoded_frame_configs_value)),
+-          self->private_impl.f_frame_config_io_position,
+-          self->private_impl.f_frame_disposal,
+-          ((self->private_impl.f_color_type <= 3u) &&  ! self->private_impl.f_seen_trns),
+-          self->private_impl.f_frame_overwrite_instead_of_blend,
+-          0u);
+-    }
+-    wuffs_base__u32__sat_add_indirect(&self->private_impl.f_num_decoded_frame_configs_value, 1u);
+-    self->private_impl.f_call_sequence = 64u;
+-
+-    ok:
+-    self->private_impl.p_do_decode_frame_config[0] = 0;
+-    goto exit;
+-  }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
+-
+-  return status;
+-}
+-
+-// -------- func png.decoder.skip_frame
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__skip_frame(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  uint32_t v_seq_num = 0;
+-
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
+-
+-  uint32_t coro_susp_point = self->private_impl.p_skip_frame[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    self->private_impl.f_chunk_type_array[0u] = 0u;
+-    self->private_impl.f_chunk_type_array[1u] = 0u;
+-    self->private_impl.f_chunk_type_array[2u] = 0u;
+-    self->private_impl.f_chunk_type_array[3u] = 0u;
+-    while (true) {
+-      if (((uint64_t)(io2_a_src - iop_a_src)) < 8u) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+-        continue;
++      if (v_c8 != 0u) {
++        status = wuffs_base__make_status(wuffs_wbmp__error__bad_header);
++        goto exit;
+       }
+-      self->private_impl.f_chunk_length = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-      self->private_impl.f_chunk_type = ((uint32_t)((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) >> 32u)));
+-      if (self->private_impl.f_chunk_type == 1413563465u) {
+-        if (self->private_impl.f_chunk_type_array[0u] == 102u) {
+-          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-          goto exit;
+-        }
+-        self->private_impl.f_chunk_type_array[0u] = 73u;
+-        self->private_impl.f_chunk_type_array[1u] = 68u;
+-        self->private_impl.f_chunk_type_array[2u] = 65u;
+-        self->private_impl.f_chunk_type_array[3u] = 84u;
+-      } else if (self->private_impl.f_chunk_type == 1413571686u) {
+-        if (self->private_impl.f_chunk_type_array[0u] == 73u) {
+-          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-          goto exit;
+-        }
+-        self->private_impl.f_chunk_type_array[0u] = 102u;
+-        self->private_impl.f_chunk_type_array[1u] = 100u;
+-        self->private_impl.f_chunk_type_array[2u] = 65u;
+-        self->private_impl.f_chunk_type_array[3u] = 84u;
+-        if (self->private_impl.f_chunk_length < 4u) {
+-          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-          goto exit;
+-        }
+-        self->private_impl.f_chunk_length -= 4u;
+-        iop_a_src += 8u;
++      v_i += 1u;
++    }
++    v_i = 0u;
++    while (v_i < 2u) {
++      v_p = 0u;
++      while (true) {
+         {
+           WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-          uint32_t t_0;
+-          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-            t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-            iop_a_src += 4;
+-          } else {
+-            self->private_data.s_skip_frame[0].scratch = 0;
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-            while (true) {
+-              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                goto suspend;
+-              }
+-              uint64_t* scratch = &self->private_data.s_skip_frame[0].scratch;
+-              uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
+-              *scratch >>= 8;
+-              *scratch <<= 8;
+-              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
+-              if (num_bits_0 == 24) {
+-                t_0 = ((uint32_t)(*scratch >> 32));
+-                break;
+-              }
+-              num_bits_0 += 8u;
+-              *scratch |= ((uint64_t)(num_bits_0));
+-            }
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
+           }
+-          v_seq_num = t_0;
++          uint8_t t_1 = *iop_a_src++;
++          v_c8 = t_1;
+         }
+-        if (v_seq_num != self->private_impl.f_next_animation_seq_num) {
+-          status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number);
+-          goto exit;
+-        } else if (self->private_impl.f_next_animation_seq_num >= 4294967295u) {
+-          status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
++        v_p |= ((uint32_t)(((uint8_t)(v_c8 & 127u))));
++        if (((uint8_t)(v_c8 >> 7u)) == 0u) {
++          break;
++        } else if (v_p > 131071u) {
++          status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
+           goto exit;
+         }
+-        self->private_impl.f_next_animation_seq_num += 1u;
+-        self->private_data.s_skip_frame[0].scratch = (((uint64_t)(self->private_impl.f_chunk_length)) + 4u);
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-        if (self->private_data.s_skip_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-          self->private_data.s_skip_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-          iop_a_src = io2_a_src;
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
+-        }
+-        iop_a_src += self->private_data.s_skip_frame[0].scratch;
+-        self->private_impl.f_chunk_length = 0u;
+-        continue;
+-      } else if (self->private_impl.f_chunk_type_array[0u] != 0u) {
+-        break;
+-      } else if (self->private_impl.f_chunk_type == 1280598886u) {
+-        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-        goto exit;
++        v_p <<= 7u;
+       }
+-      self->private_data.s_skip_frame[0].scratch = (((uint64_t)(self->private_impl.f_chunk_length)) + 12u);
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-      if (self->private_data.s_skip_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-        self->private_data.s_skip_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-        iop_a_src = io2_a_src;
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
++      if (v_i == 0u) {
++        self->private_impl.f_width = v_p;
++      } else {
++        self->private_impl.f_height = v_p;
+       }
+-      iop_a_src += self->private_data.s_skip_frame[0].scratch;
+-      self->private_impl.f_chunk_length = 0u;
++      v_i += 1u;
++    }
++    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
++    if (a_dst != NULL) {
++      wuffs_base__image_config__set(
++          a_dst,
++          2198077448u,
++          0u,
++          self->private_impl.f_width,
++          self->private_impl.f_height,
++          self->private_impl.f_frame_config_io_position,
++          true);
+     }
+-    wuffs_base__u32__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
+     self->private_impl.f_call_sequence = 32u;
+ 
++    goto ok;
+     ok:
+-    self->private_impl.p_skip_frame[0] = 0;
++    self->private_impl.p_do_decode_image_config = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_skip_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.p_do_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_do_decode_image_config.v_i = v_i;
++  self->private_data.s_do_decode_image_config.v_p = v_p;
+ 
+   goto exit;
+   exit:
+@@ -57220,17 +70950,14 @@ wuffs_png__decoder__skip_frame(
+   return status;
+ }
+ 
+-// -------- func png.decoder.decode_frame
++// -------- func wbmp.decoder.decode_frame_config
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_png__decoder__decode_frame(
+-    wuffs_png__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts) {
++wuffs_wbmp__decoder__decode_frame_config(
++    wuffs_wbmp__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
+   if (!self) {
+     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+@@ -57240,12 +70967,12 @@ wuffs_png__decoder__decode_frame(
+         ? wuffs_base__error__disabled_by_previous_error
+         : wuffs_base__error__initialize_not_called);
+   }
+-  if (!a_dst || !a_src) {
++  if (!a_src) {
+     self->private_impl.magic = WUFFS_BASE__DISABLED;
+     return wuffs_base__make_status(wuffs_base__error__bad_argument);
+   }
+   if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 3)) {
++      (self->private_impl.active_coroutine != 2)) {
+     self->private_impl.magic = WUFFS_BASE__DISABLED;
+     return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+   }
+@@ -57254,22 +70981,17 @@ wuffs_png__decoder__decode_frame(
+ 
+   wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_frame[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+     while (true) {
+       {
+-        wuffs_base__status t_0 = wuffs_png__decoder__do_decode_frame(self,
+-            a_dst,
+-            a_src,
+-            a_blend,
+-            a_workbuf,
+-            a_opts);
++        wuffs_base__status t_0 = wuffs_wbmp__decoder__do_decode_frame_config(self, a_dst, a_src);
+         v_status = t_0;
+       }
+       if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_png__error__truncated_input);
++        status = wuffs_base__make_status(wuffs_wbmp__error__truncated_input);
+         goto exit;
+       }
+       status = v_status;
+@@ -57277,14 +70999,14 @@ wuffs_png__decoder__decode_frame(
+     }
+ 
+     ok:
+-    self->private_impl.p_decode_frame[0] = 0;
++    self->private_impl.p_decode_frame_config = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
++  self->private_impl.p_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
+ 
+   goto exit;
+   exit:
+@@ -57294,24 +71016,16 @@ wuffs_png__decoder__decode_frame(
+   return status;
+ }
+ 
+-// -------- func png.decoder.do_decode_frame
++// -------- func wbmp.decoder.do_decode_frame_config
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_png__decoder__do_decode_frame(
+-    wuffs_png__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts) {
++wuffs_wbmp__decoder__do_decode_frame_config(
++    wuffs_wbmp__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t v_seq_num = 0;
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-  uint32_t v_pass_width = 0;
+-  uint32_t v_pass_height = 0;
+-
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -57323,210 +71037,62 @@ wuffs_png__decoder__do_decode_frame(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0];
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if ((self->private_impl.f_call_sequence & 16u) != 0u) {
+-      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
+-      goto exit;
+-    } else if (self->private_impl.f_call_sequence >= 96u) {
+-      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-      goto ok;
+-    } else if (self->private_impl.f_call_sequence != 64u) {
++    if (self->private_impl.f_call_sequence == 32u) {
++    } else if (self->private_impl.f_call_sequence < 32u) {
+       if (a_src) {
+         a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+       }
+       WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      status = wuffs_png__decoder__do_decode_frame_config(self, NULL, a_src);
++      status = wuffs_wbmp__decoder__do_decode_image_config(self, NULL, a_src);
+       if (a_src) {
+         iop_a_src = a_src->data.ptr + a_src->meta.ri;
+       }
+       if (status.repr) {
+         goto suspend;
+       }
+-    }
+-    while (true) {
+-      if (((uint64_t)(io2_a_src - iop_a_src)) < 8u) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
+-        continue;
+-      }
+-      self->private_impl.f_chunk_length = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-      self->private_impl.f_chunk_type = ((uint32_t)((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) >> 32u)));
+-      if (self->private_impl.f_chunk_type == 1413563465u) {
+-        self->private_impl.f_chunk_type_array[0u] = 73u;
+-        self->private_impl.f_chunk_type_array[1u] = 68u;
+-        self->private_impl.f_chunk_type_array[2u] = 65u;
+-        self->private_impl.f_chunk_type_array[3u] = 84u;
+-        iop_a_src += 8u;
+-        if ( ! self->private_impl.f_ignore_checksum) {
+-          wuffs_base__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
+-              sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
+-          wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4));
+-        }
+-        break;
+-      } else if (self->private_impl.f_chunk_type == 1413571686u) {
+-        self->private_impl.f_chunk_type_array[0u] = 102u;
+-        self->private_impl.f_chunk_type_array[1u] = 100u;
+-        self->private_impl.f_chunk_type_array[2u] = 65u;
+-        self->private_impl.f_chunk_type_array[3u] = 84u;
+-        if (self->private_impl.f_chunk_length < 4u) {
+-          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-          goto exit;
+-        }
+-        self->private_impl.f_chunk_length -= 4u;
+-        iop_a_src += 8u;
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-          uint32_t t_0;
+-          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-            t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-            iop_a_src += 4;
+-          } else {
+-            self->private_data.s_do_decode_frame[0].scratch = 0;
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-            while (true) {
+-              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                goto suspend;
+-              }
+-              uint64_t* scratch = &self->private_data.s_do_decode_frame[0].scratch;
+-              uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
+-              *scratch >>= 8;
+-              *scratch <<= 8;
+-              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
+-              if (num_bits_0 == 24) {
+-                t_0 = ((uint32_t)(*scratch >> 32));
+-                break;
+-              }
+-              num_bits_0 += 8u;
+-              *scratch |= ((uint64_t)(num_bits_0));
+-            }
+-          }
+-          v_seq_num = t_0;
+-        }
+-        if (v_seq_num != self->private_impl.f_next_animation_seq_num) {
+-          status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number);
+-          goto exit;
+-        } else if (self->private_impl.f_next_animation_seq_num >= 4294967295u) {
+-          status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
+-          goto exit;
+-        }
+-        self->private_impl.f_next_animation_seq_num += 1u;
+-        break;
+-      } else if (self->private_impl.f_chunk_type == 1280598886u) {
+-        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-        goto exit;
+-      }
+-      self->private_data.s_do_decode_frame[0].scratch = (((uint64_t)(self->private_impl.f_chunk_length)) + 12u);
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-      if (self->private_data.s_do_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-        self->private_data.s_do_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-        iop_a_src = io2_a_src;
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      iop_a_src += self->private_data.s_do_decode_frame[0].scratch;
+-      self->private_impl.f_chunk_length = 0u;
+-    }
+-    if (self->private_impl.f_zlib_is_dirty) {
+-      wuffs_base__ignore_status(wuffs_zlib__decoder__initialize(&self->private_data.f_zlib,
+-          sizeof (wuffs_zlib__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
+-      if (self->private_impl.f_ignore_checksum) {
+-        wuffs_zlib__decoder__set_quirk(&self->private_data.f_zlib, 1u, 1u);
+-      }
+-    }
+-    self->private_impl.f_zlib_is_dirty = true;
+-    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
+-        wuffs_base__pixel_buffer__pixel_format(a_dst),
+-        wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
+-        wuffs_base__utility__make_pixel_format(self->private_impl.f_src_pixfmt),
+-        wuffs_base__make_slice_u8(self->private_data.f_src_palette, 1024),
+-        a_blend);
+-    if ( ! wuffs_base__status__is_ok(&v_status)) {
+-      status = v_status;
+-      if (wuffs_base__status__is_error(&status)) {
+-        goto exit;
+-      } else if (wuffs_base__status__is_suspension(&status)) {
+-        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++    } else if (self->private_impl.f_call_sequence == 40u) {
++      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
++        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
+         goto exit;
+       }
++    } else if (self->private_impl.f_call_sequence == 64u) {
++      self->private_impl.f_call_sequence = 96u;
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
++    } else {
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+       goto ok;
+     }
+-    self->private_impl.f_workbuf_hist_pos_base = 0u;
+-    while (true) {
+-      if (self->private_impl.f_chunk_type_array[0u] == 73u) {
+-        v_pass_width = (16777215u & ((((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][1u])) + self->private_impl.f_width) >> WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0u]));
+-        v_pass_height = (16777215u & ((((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][4u])) + self->private_impl.f_height) >> WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][3u]));
+-      } else {
+-        v_pass_width = (16777215u & ((uint32_t)(self->private_impl.f_frame_rect_x1 - self->private_impl.f_frame_rect_x0)));
+-        v_pass_height = (16777215u & ((uint32_t)(self->private_impl.f_frame_rect_y1 - self->private_impl.f_frame_rect_y0)));
+-      }
+-      if ((v_pass_width > 0u) && (v_pass_height > 0u)) {
+-        self->private_impl.f_pass_bytes_per_row = wuffs_png__decoder__calculate_bytes_per_row(self, v_pass_width);
+-        self->private_impl.f_pass_workbuf_length = (((uint64_t)(v_pass_height)) * (1u + self->private_impl.f_pass_bytes_per_row));
+-        while (true) {
+-          {
+-            if (a_src) {
+-              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-            }
+-            wuffs_base__status t_1 = wuffs_png__decoder__decode_pass(self, a_src, a_workbuf);
+-            v_status = t_1;
+-            if (a_src) {
+-              iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-            }
+-          }
+-          if (wuffs_base__status__is_ok(&v_status)) {
+-            break;
+-          } else if (wuffs_base__status__is_error(&v_status) || ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed))) {
+-            if (self->private_impl.f_workbuf_wi <= ((uint64_t)(a_workbuf.len))) {
+-              wuffs_png__decoder__filter_and_swizzle(self, a_dst, wuffs_base__slice_u8__subslice_j(a_workbuf, self->private_impl.f_workbuf_wi));
+-            }
+-            if (v_status.repr == wuffs_base__suspension__short_read) {
+-              status = wuffs_base__make_status(wuffs_png__error__truncated_input);
+-              goto exit;
+-            }
+-          }
+-          status = v_status;
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
+-        }
+-        v_status = wuffs_png__decoder__filter_and_swizzle(self, a_dst, a_workbuf);
+-        if ( ! wuffs_base__status__is_ok(&v_status)) {
+-          status = v_status;
+-          if (wuffs_base__status__is_error(&status)) {
+-            goto exit;
+-          } else if (wuffs_base__status__is_suspension(&status)) {
+-            status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
+-            goto exit;
+-          }
+-          goto ok;
+-        }
+-        self->private_impl.f_workbuf_hist_pos_base += self->private_impl.f_pass_workbuf_length;
+-      }
+-      if ((self->private_impl.f_interlace_pass == 0u) || (self->private_impl.f_interlace_pass >= 7u)) {
+-        break;
+-      }
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wconversion"
+-#endif
+-      self->private_impl.f_interlace_pass += 1u;
+-#if defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
++    if (a_dst != NULL) {
++      wuffs_base__frame_config__set(
++          a_dst,
++          wuffs_base__utility__make_rect_ie_u32(
++          0u,
++          0u,
++          self->private_impl.f_width,
++          self->private_impl.f_height),
++          ((wuffs_base__flicks)(0u)),
++          0u,
++          self->private_impl.f_frame_config_io_position,
++          0u,
++          true,
++          false,
++          4278190080u);
+     }
+-    wuffs_base__u32__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
+-    self->private_impl.f_call_sequence = 32u;
++    self->private_impl.f_call_sequence = 64u;
+ 
+     ok:
+-    self->private_impl.p_do_decode_frame[0] = 0;
++    self->private_impl.p_do_decode_frame_config = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.p_do_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+   goto exit;
+   exit:
+@@ -57537,338 +71103,217 @@ wuffs_png__decoder__do_decode_frame(
+   return status;
+ }
+ 
+-// -------- func png.decoder.decode_pass
++// -------- func wbmp.decoder.decode_frame
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_png__decoder__decode_pass(
+-    wuffs_png__decoder* self,
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_wbmp__decoder__decode_frame(
++    wuffs_wbmp__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
+     wuffs_base__io_buffer* a_src,
+-    wuffs_base__slice_u8 a_workbuf) {
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_dst || !a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 3)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  wuffs_base__io_buffer u_w = wuffs_base__empty_io_buffer();
+-  wuffs_base__io_buffer* v_w = &u_w;
+-  uint8_t* iop_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io0_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io1_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io2_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint64_t v_w_mark = 0;
+-  uint64_t v_r_mark = 0;
+-  wuffs_base__status v_zlib_status = wuffs_base__make_status(NULL);
+-  uint32_t v_checksum_have = 0;
+-  uint32_t v_checksum_want = 0;
+-  uint32_t v_seq_num = 0;
+-
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_pass[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_frame;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    self->private_impl.f_workbuf_wi = 0u;
+     while (true) {
+-      if ((self->private_impl.f_workbuf_wi > self->private_impl.f_pass_workbuf_length) || (self->private_impl.f_pass_workbuf_length > ((uint64_t)(a_workbuf.len)))) {
+-        status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
+-        goto exit;
+-      }
+       {
+-        wuffs_base__io_buffer* o_0_v_w = v_w;
+-        uint8_t *o_0_iop_v_w = iop_v_w;
+-        uint8_t *o_0_io0_v_w = io0_v_w;
+-        uint8_t *o_0_io1_v_w = io1_v_w;
+-        uint8_t *o_0_io2_v_w = io2_v_w;
+-        v_w = wuffs_base__io_writer__set(
+-            &u_w,
+-            &iop_v_w,
+-            &io0_v_w,
+-            &io1_v_w,
+-            &io2_v_w,
+-            wuffs_base__slice_u8__subslice_ij(a_workbuf,
+-            self->private_impl.f_workbuf_wi,
+-            self->private_impl.f_pass_workbuf_length),
+-            ((uint64_t)(self->private_impl.f_workbuf_hist_pos_base + self->private_impl.f_workbuf_wi)));
+-        {
+-          const bool o_1_closed_a_src = a_src->meta.closed;
+-          const uint8_t *o_1_io2_a_src = io2_a_src;
+-          wuffs_base__io_reader__limit(&io2_a_src, iop_a_src,
+-              ((uint64_t)(self->private_impl.f_chunk_length)));
+-          if (a_src) {
+-            size_t n = ((size_t)(io2_a_src - a_src->data.ptr));
+-            a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n);
+-            a_src->meta.wi = n;
+-          }
+-          v_w_mark = ((uint64_t)(iop_v_w - io0_v_w));
+-          v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
+-          {
+-            u_w.meta.wi = ((size_t)(iop_v_w - u_w.data.ptr));
+-            if (a_src) {
+-              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-            }
+-            wuffs_base__status t_0 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, v_w, a_src, wuffs_base__utility__empty_slice_u8());
+-            v_zlib_status = t_0;
+-            iop_v_w = u_w.data.ptr + u_w.meta.wi;
+-            if (a_src) {
+-              iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-            }
+-          }
+-          if ( ! self->private_impl.f_ignore_checksum) {
+-            wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__io__since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
+-          }
+-          wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)(wuffs_base__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))))));
+-          wuffs_base__u64__sat_add_indirect(&self->private_impl.f_workbuf_wi, wuffs_base__io__count_since(v_w_mark, ((uint64_t)(iop_v_w - io0_v_w))));
+-          io2_a_src = o_1_io2_a_src;
+-          if (a_src) {
+-            a_src->meta.closed = o_1_closed_a_src;
+-            a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
+-          }
+-        }
+-        v_w = o_0_v_w;
+-        iop_v_w = o_0_iop_v_w;
+-        io0_v_w = o_0_io0_v_w;
+-        io1_v_w = o_0_io1_v_w;
+-        io2_v_w = o_0_io2_v_w;
++        wuffs_base__status t_0 = wuffs_wbmp__decoder__do_decode_frame(self,
++            a_dst,
++            a_src,
++            a_blend,
++            a_workbuf,
++            a_opts);
++        v_status = t_0;
+       }
+-      if (wuffs_base__status__is_ok(&v_zlib_status)) {
+-        if (self->private_impl.f_chunk_length > 0u) {
+-          status = wuffs_base__make_status(wuffs_base__error__too_much_data);
+-          goto exit;
+-        }
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-          uint32_t t_1;
+-          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-            t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-            iop_a_src += 4;
+-          } else {
+-            self->private_data.s_decode_pass[0].scratch = 0;
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-            while (true) {
+-              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                goto suspend;
+-              }
+-              uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch;
+-              uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
+-              *scratch >>= 8;
+-              *scratch <<= 8;
+-              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
+-              if (num_bits_1 == 24) {
+-                t_1 = ((uint32_t)(*scratch >> 32));
+-                break;
+-              }
+-              num_bits_1 += 8u;
+-              *scratch |= ((uint64_t)(num_bits_1));
+-            }
+-          }
+-          v_checksum_want = t_1;
+-        }
+-        if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_chunk_type_array[0u] == 73u)) {
+-          v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__utility__empty_slice_u8());
+-          if (v_checksum_have != v_checksum_want) {
+-            status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
+-            goto exit;
+-          }
+-        }
+-        break;
+-      } else if (v_zlib_status.repr == wuffs_base__suspension__short_write) {
+-        if ((1u <= self->private_impl.f_interlace_pass) && (self->private_impl.f_interlace_pass <= 6u)) {
+-          break;
+-        }
+-        status = wuffs_base__make_status(wuffs_base__error__too_much_data);
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_wbmp__error__truncated_input);
+         goto exit;
+-      } else if (v_zlib_status.repr != wuffs_base__suspension__short_read) {
+-        status = v_zlib_status;
+-        if (wuffs_base__status__is_error(&status)) {
+-          goto exit;
+-        } else if (wuffs_base__status__is_suspension(&status)) {
+-          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
+-          goto exit;
+-        }
+-        goto ok;
+-      } else if (self->private_impl.f_chunk_length == 0u) {
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-          uint32_t t_2;
+-          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-            t_2 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-            iop_a_src += 4;
+-          } else {
+-            self->private_data.s_decode_pass[0].scratch = 0;
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-            while (true) {
+-              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                goto suspend;
+-              }
+-              uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch;
+-              uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu));
+-              *scratch >>= 8;
+-              *scratch <<= 8;
+-              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
+-              if (num_bits_2 == 24) {
+-                t_2 = ((uint32_t)(*scratch >> 32));
+-                break;
+-              }
+-              num_bits_2 += 8u;
+-              *scratch |= ((uint64_t)(num_bits_2));
+-            }
+-          }
+-          v_checksum_want = t_2;
+-        }
+-        if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_chunk_type_array[0u] == 73u)) {
+-          v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__utility__empty_slice_u8());
+-          if (v_checksum_have != v_checksum_want) {
+-            status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
+-            goto exit;
+-          }
+-        }
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
+-          uint32_t t_3;
+-          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-            t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-            iop_a_src += 4;
+-          } else {
+-            self->private_data.s_decode_pass[0].scratch = 0;
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-            while (true) {
+-              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                goto suspend;
+-              }
+-              uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch;
+-              uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu));
+-              *scratch >>= 8;
+-              *scratch <<= 8;
+-              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
+-              if (num_bits_3 == 24) {
+-                t_3 = ((uint32_t)(*scratch >> 32));
+-                break;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++
++    ok:
++    self->private_impl.p_decode_frame = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func wbmp.decoder.do_decode_frame
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_wbmp__decoder__do_decode_frame(
++    wuffs_wbmp__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++  wuffs_base__pixel_format v_dst_pixfmt = {0};
++  uint32_t v_dst_bits_per_pixel = 0;
++  uint64_t v_dst_bytes_per_pixel = 0;
++  uint64_t v_dst_x_in_bytes = 0;
++  uint32_t v_dst_x = 0;
++  uint32_t v_dst_y = 0;
++  wuffs_base__table_u8 v_tab = {0};
++  wuffs_base__slice_u8 v_dst = {0};
++  uint8_t v_src[1] = {0};
++  uint8_t v_c8 = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame;
++  if (coro_susp_point) {
++    v_dst_bytes_per_pixel = self->private_data.s_do_decode_frame.v_dst_bytes_per_pixel;
++    v_dst_x = self->private_data.s_do_decode_frame.v_dst_x;
++    v_dst_y = self->private_data.s_do_decode_frame.v_dst_y;
++    memcpy(v_src, self->private_data.s_do_decode_frame.v_src, sizeof(v_src));
++    v_c8 = self->private_data.s_do_decode_frame.v_c8;
++  }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_call_sequence == 64u) {
++    } else if (self->private_impl.f_call_sequence < 64u) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      status = wuffs_wbmp__decoder__do_decode_frame_config(self, NULL, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++    } else {
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
++    }
++    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
++        wuffs_base__pixel_buffer__pixel_format(a_dst),
++        wuffs_base__pixel_buffer__palette(a_dst),
++        wuffs_base__utility__make_pixel_format(536870920u),
++        wuffs_base__utility__empty_slice_u8(),
++        a_blend);
++    if ( ! wuffs_base__status__is_ok(&v_status)) {
++      status = v_status;
++      if (wuffs_base__status__is_error(&status)) {
++        goto exit;
++      } else if (wuffs_base__status__is_suspension(&status)) {
++        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++        goto exit;
++      }
++      goto ok;
++    }
++    v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
++    v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
++    if ((v_dst_bits_per_pixel & 7u) != 0u) {
++      status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
++      goto exit;
++    }
++    v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8u)));
++    if (self->private_impl.f_width > 0u) {
++      v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
++      while (v_dst_y < self->private_impl.f_height) {
++        v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, v_dst_y);
++        v_dst_x = 0u;
++        while (v_dst_x < self->private_impl.f_width) {
++          if ((v_dst_x & 7u) == 0u) {
++            while (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
++              v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
++              v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, v_dst_y);
++              v_dst_x_in_bytes = (((uint64_t)(v_dst_x)) * v_dst_bytes_per_pixel);
++              if (v_dst_x_in_bytes <= ((uint64_t)(v_dst.len))) {
++                v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_x_in_bytes);
+               }
+-              num_bits_3 += 8u;
+-              *scratch |= ((uint64_t)(num_bits_3));
+             }
++            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
++            iop_a_src += 1u;
+           }
+-          self->private_impl.f_chunk_length = t_3;
+-        }
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
+-          uint32_t t_4;
+-          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-            t_4 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-            iop_a_src += 4;
++          if (((uint8_t)(v_c8 & 128u)) == 0u) {
++            v_src[0u] = 0u;
+           } else {
+-            self->private_data.s_decode_pass[0].scratch = 0;
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
+-            while (true) {
+-              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                goto suspend;
+-              }
+-              uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch;
+-              uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
+-              *scratch <<= 8;
+-              *scratch >>= 8;
+-              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
+-              if (num_bits_4 == 24) {
+-                t_4 = ((uint32_t)(*scratch));
+-                break;
+-              }
+-              num_bits_4 += 8u;
+-              *scratch |= ((uint64_t)(num_bits_4)) << 56;
+-            }
+-          }
+-          self->private_impl.f_chunk_type = t_4;
+-        }
+-        if (self->private_impl.f_chunk_type_array[0u] == 73u) {
+-          if (self->private_impl.f_chunk_type != 1413563465u) {
+-            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-            goto exit;
+-          }
+-          if ( ! self->private_impl.f_ignore_checksum) {
+-            wuffs_base__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
+-                sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
+-            wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4));
+-          }
+-        } else {
+-          if ((self->private_impl.f_chunk_type != 1413571686u) || (self->private_impl.f_chunk_length < 4u)) {
+-            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-            goto exit;
+-          }
+-          self->private_impl.f_chunk_length -= 4u;
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
+-            uint32_t t_5;
+-            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-              t_5 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
+-              iop_a_src += 4;
+-            } else {
+-              self->private_data.s_decode_pass[0].scratch = 0;
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
+-              while (true) {
+-                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                  goto suspend;
+-                }
+-                uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch;
+-                uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFFu));
+-                *scratch >>= 8;
+-                *scratch <<= 8;
+-                *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5);
+-                if (num_bits_5 == 24) {
+-                  t_5 = ((uint32_t)(*scratch >> 32));
+-                  break;
+-                }
+-                num_bits_5 += 8u;
+-                *scratch |= ((uint64_t)(num_bits_5));
+-              }
+-            }
+-            v_seq_num = t_5;
++            v_src[0u] = 255u;
+           }
+-          if (v_seq_num != self->private_impl.f_next_animation_seq_num) {
+-            status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number);
+-            goto exit;
+-          } else if (self->private_impl.f_next_animation_seq_num >= 4294967295u) {
+-            status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
+-            goto exit;
++          v_c8 = ((uint8_t)((((uint32_t)(v_c8)) << 1u)));
++          wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, wuffs_base__utility__empty_slice_u8(), wuffs_base__make_slice_u8(v_src, 1));
++          if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) {
++            v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel);
+           }
+-          self->private_impl.f_next_animation_seq_num += 1u;
++          v_dst_x += 1u;
+         }
+-        continue;
+-      } else if (((uint64_t)(io2_a_src - iop_a_src)) > 0u) {
+-        status = wuffs_base__make_status(wuffs_png__error__internal_error_zlib_decoder_did_not_exhaust_its_input);
+-        goto exit;
+-      }
+-      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11);
+-    }
+-    if (self->private_impl.f_workbuf_wi != self->private_impl.f_pass_workbuf_length) {
+-      status = wuffs_base__make_status(wuffs_base__error__not_enough_data);
+-      goto exit;
+-    } else if (0u < ((uint64_t)(a_workbuf.len))) {
+-      if (a_workbuf.ptr[0u] == 4u) {
+-        a_workbuf.ptr[0u] = 1u;
++        v_dst_y += 1u;
+       }
+     }
++    self->private_impl.f_call_sequence = 96u;
+ 
+     ok:
+-    self->private_impl.p_decode_pass[0] = 0;
++    self->private_impl.p_do_decode_frame = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_pass[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.p_do_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_do_decode_frame.v_dst_bytes_per_pixel = v_dst_bytes_per_pixel;
++  self->private_data.s_do_decode_frame.v_dst_x = v_dst_x;
++  self->private_data.s_do_decode_frame.v_dst_y = v_dst_y;
++  memcpy(self->private_data.s_do_decode_frame.v_src, v_src, sizeof(v_src));
++  self->private_data.s_do_decode_frame.v_c8 = v_c8;
+ 
+   goto exit;
+   exit:
+@@ -57879,12 +71324,12 @@ wuffs_png__decoder__decode_pass(
+   return status;
+ }
+ 
+-// -------- func png.decoder.frame_dirty_rect
++// -------- func wbmp.decoder.frame_dirty_rect
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
+-wuffs_png__decoder__frame_dirty_rect(
+-    const wuffs_png__decoder* self) {
++wuffs_wbmp__decoder__frame_dirty_rect(
++    const wuffs_wbmp__decoder* self) {
+   if (!self) {
+     return wuffs_base__utility__empty_rect_ie_u32();
+   }
+@@ -57894,18 +71339,18 @@ wuffs_png__decoder__frame_dirty_rect(
+   }
+ 
+   return wuffs_base__utility__make_rect_ie_u32(
+-      self->private_impl.f_frame_rect_x0,
+-      self->private_impl.f_frame_rect_y0,
+-      self->private_impl.f_frame_rect_x1,
+-      self->private_impl.f_frame_rect_y1);
++      0u,
++      0u,
++      self->private_impl.f_width,
++      self->private_impl.f_height);
+ }
+ 
+-// -------- func png.decoder.num_animation_loops
++// -------- func wbmp.decoder.num_animation_loops
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_png__decoder__num_animation_loops(
+-    const wuffs_png__decoder* self) {
++wuffs_wbmp__decoder__num_animation_loops(
++    const wuffs_wbmp__decoder* self) {
+   if (!self) {
+     return 0;
+   }
+@@ -57914,15 +71359,15 @@ wuffs_png__decoder__num_animation_loops(
+     return 0;
+   }
+ 
+-  return self->private_impl.f_num_animation_loops_value;
++  return 0u;
+ }
+ 
+-// -------- func png.decoder.num_decoded_frame_configs
++// -------- func wbmp.decoder.num_decoded_frame_configs
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_png__decoder__num_decoded_frame_configs(
+-    const wuffs_png__decoder* self) {
++wuffs_wbmp__decoder__num_decoded_frame_configs(
++    const wuffs_wbmp__decoder* self) {
+   if (!self) {
+     return 0;
+   }
+@@ -57931,15 +71376,18 @@ wuffs_png__decoder__num_decoded_frame_configs(
+     return 0;
+   }
+ 
+-  return ((uint64_t)(self->private_impl.f_num_decoded_frame_configs_value));
++  if (self->private_impl.f_call_sequence > 32u) {
++    return 1u;
++  }
++  return 0u;
+ }
+ 
+-// -------- func png.decoder.num_decoded_frames
++// -------- func wbmp.decoder.num_decoded_frames
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_png__decoder__num_decoded_frames(
+-    const wuffs_png__decoder* self) {
++wuffs_wbmp__decoder__num_decoded_frames(
++    const wuffs_wbmp__decoder* self) {
+   if (!self) {
+     return 0;
+   }
+@@ -57948,15 +71396,18 @@ wuffs_png__decoder__num_decoded_frames(
+     return 0;
+   }
+ 
+-  return ((uint64_t)(self->private_impl.f_num_decoded_frames_value));
++  if (self->private_impl.f_call_sequence > 64u) {
++    return 1u;
++  }
++  return 0u;
+ }
+ 
+-// -------- func png.decoder.restart_frame
++// -------- func wbmp.decoder.restart_frame
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_png__decoder__restart_frame(
+-    wuffs_png__decoder* self,
++wuffs_wbmp__decoder__restart_frame(
++    wuffs_wbmp__decoder* self,
+     uint64_t a_index,
+     uint64_t a_io_position) {
+   if (!self) {
+@@ -57971,154 +71422,514 @@ wuffs_png__decoder__restart_frame(
+ 
+   if (self->private_impl.f_call_sequence < 32u) {
+     return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
+-  } else if ((a_index >= ((uint64_t)(self->private_impl.f_num_animation_frames_value))) || ((a_index == 0u) && (a_io_position != self->private_impl.f_first_config_io_position))) {
++  }
++  if (a_index != 0u) {
+     return wuffs_base__make_status(wuffs_base__error__bad_argument);
+   }
+   self->private_impl.f_call_sequence = 40u;
+-  if (self->private_impl.f_interlace_pass >= 1u) {
+-    self->private_impl.f_interlace_pass = 1u;
+-  }
+   self->private_impl.f_frame_config_io_position = a_io_position;
+-  self->private_impl.f_num_decoded_frame_configs_value = ((uint32_t)(a_index));
+-  self->private_impl.f_num_decoded_frames_value = self->private_impl.f_num_decoded_frame_configs_value;
+   return wuffs_base__make_status(NULL);
+ }
+ 
+-// -------- func png.decoder.set_report_metadata
++// -------- func wbmp.decoder.set_report_metadata
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_png__decoder__set_report_metadata(
+-    wuffs_png__decoder* self,
++wuffs_wbmp__decoder__set_report_metadata(
++    wuffs_wbmp__decoder* self,
+     uint32_t a_fourcc,
+     bool a_report) {
++  return wuffs_base__make_empty_struct();
++}
++
++// -------- func wbmp.decoder.tell_me_more
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_wbmp__decoder__tell_me_more(
++    wuffs_wbmp__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__more_information* a_minfo,
++    wuffs_base__io_buffer* a_src) {
+   if (!self) {
+-    return wuffs_base__make_empty_struct();
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+   if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_empty_struct();
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_dst || !a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 4)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+   }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  if (a_fourcc == 1128813133u) {
+-    self->private_impl.f_report_metadata_chrm = a_report;
+-  } else if (a_fourcc == 1163413830u) {
+-    self->private_impl.f_report_metadata_exif = a_report;
+-  } else if (a_fourcc == 1195461953u) {
+-    self->private_impl.f_report_metadata_gama = a_report;
+-  } else if (a_fourcc == 1229144912u) {
+-    self->private_impl.f_report_metadata_iccp = a_report;
+-  } else if (a_fourcc == 1263947808u) {
+-    self->private_impl.f_report_metadata_kvp = a_report;
+-  } else if (a_fourcc == 1397901122u) {
+-    self->private_impl.f_report_metadata_srgb = a_report;
++  status = wuffs_base__make_status(wuffs_base__error__no_more_information);
++  goto exit;
++
++  goto ok;
++  ok:
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func wbmp.decoder.workbuf_len
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_wbmp__decoder__workbuf_len(
++    const wuffs_wbmp__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++
++  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
++}
++
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP)
++
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WEBP)
++
++// ---------------- Status Codes Implementations
++
++const char wuffs_webp__error__bad_huffman_code_over_subscribed[] = "#webp: bad Huffman code (over-subscribed)";
++const char wuffs_webp__error__bad_huffman_code_under_subscribed[] = "#webp: bad Huffman code (under-subscribed)";
++const char wuffs_webp__error__bad_huffman_code[] = "#webp: bad Huffman code";
++const char wuffs_webp__error__bad_back_reference[] = "#webp: bad back-reference";
++const char wuffs_webp__error__bad_color_cache[] = "#webp: bad color cache";
++const char wuffs_webp__error__bad_header[] = "#webp: bad header";
++const char wuffs_webp__error__bad_transform[] = "#webp: bad transform";
++const char wuffs_webp__error__short_chunk[] = "#webp: short chunk";
++const char wuffs_webp__error__truncated_input[] = "#webp: truncated input";
++const char wuffs_webp__error__unsupported_number_of_huffman_groups[] = "#webp: unsupported number of Huffman groups";
++const char wuffs_webp__error__unsupported_transform_after_color_indexing_transform[] = "#webp: unsupported transform after color indexing transform";
++const char wuffs_webp__error__unsupported_webp_file[] = "#webp: unsupported WebP file";
++const char wuffs_webp__error__internal_error_inconsistent_huffman_code[] = "#webp: internal error: inconsistent Huffman code";
++const char wuffs_webp__error__internal_error_inconsistent_dst_buffer[] = "#webp: internal error: inconsistent dst buffer";
++const char wuffs_webp__error__internal_error_inconsistent_n_bits[] = "#webp: internal error: inconsistent n_bits";
++
++// ---------------- Private Consts
++
++static const uint8_t
++WUFFS_WEBP__CODE_LENGTH_CODE_ORDER[19] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  17u, 18u, 0u, 1u, 2u, 3u, 4u, 5u,
++  16u, 6u, 7u, 8u, 9u, 10u, 11u, 12u,
++  13u, 14u, 15u,
++};
++
++static const uint8_t
++WUFFS_WEBP__REPEAT_N_BITS[4] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  2u, 3u, 7u, 0u,
++};
++
++static const uint8_t
++WUFFS_WEBP__REPEAT_COUNTS[4] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  3u, 3u, 11u, 0u,
++};
++
++static const uint16_t
++WUFFS_WEBP__HUFFMAN_TABLE_BASE_OFFSETS[5] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  1612u, 0u, 511u, 1022u, 1533u,
++};
++
++static const uint8_t
++WUFFS_WEBP__DISTANCE_MAP[120] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  24u, 7u, 23u, 25u, 40u, 6u, 39u, 41u,
++  22u, 26u, 38u, 42u, 56u, 5u, 55u, 57u,
++  21u, 27u, 54u, 58u, 37u, 43u, 72u, 4u,
++  71u, 73u, 20u, 28u, 53u, 59u, 70u, 74u,
++  36u, 44u, 88u, 69u, 75u, 52u, 60u, 3u,
++  87u, 89u, 19u, 29u, 86u, 90u, 35u, 45u,
++  68u, 76u, 85u, 91u, 51u, 61u, 104u, 2u,
++  103u, 105u, 18u, 30u, 102u, 106u, 34u, 46u,
++  84u, 92u, 67u, 77u, 101u, 107u, 50u, 62u,
++  120u, 1u, 119u, 121u, 83u, 93u, 17u, 31u,
++  100u, 108u, 66u, 78u, 118u, 122u, 33u, 47u,
++  117u, 123u, 49u, 63u, 99u, 109u, 82u, 94u,
++  0u, 116u, 124u, 65u, 79u, 16u, 32u, 98u,
++  110u, 48u, 115u, 125u, 81u, 95u, 64u, 114u,
++  126u, 97u, 111u, 80u, 113u, 127u, 96u, 112u,
++};
++
++// ---------------- Private Initializer Prototypes
++
++// ---------------- Private Function Prototypes
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__decode_huffman_groups(
++    wuffs_webp__decoder* self,
++    wuffs_base__io_buffer* a_src,
++    uint32_t a_n_huffman_groups);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__decode_huffman_tree(
++    wuffs_webp__decoder* self,
++    wuffs_base__io_buffer* a_src,
++    uint32_t a_hg,
++    uint32_t a_ht);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__decode_huffman_tree_simple(
++    wuffs_webp__decoder* self,
++    wuffs_base__io_buffer* a_src,
++    uint32_t a_hg,
++    uint32_t a_ht);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__decode_code_length_code_lengths(
++    wuffs_webp__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__build_code_lengths_huffman_nodes(
++    wuffs_webp__decoder* self);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__build_huffman_nodes(
++    wuffs_webp__decoder* self,
++    uint32_t a_hg,
++    uint32_t a_ht);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__build_code_lengths(
++    wuffs_webp__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__decode_pixels_slow(
++    wuffs_webp__decoder* self,
++    wuffs_base__slice_u8 a_dst,
++    wuffs_base__io_buffer* a_src,
++    uint32_t a_width,
++    uint32_t a_height,
++    wuffs_base__slice_u8 a_tile_data,
++    uint32_t a_tile_size_log2);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_webp__decoder__apply_transform_predictor(
++    wuffs_webp__decoder* self,
++    wuffs_base__slice_u8 a_pix,
++    wuffs_base__slice_u8 a_tile_data);
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint32_t
++wuffs_webp__decoder__absolute_difference(
++    const wuffs_webp__decoder* self,
++    uint32_t a_a,
++    uint32_t a_b);
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint8_t
++wuffs_webp__decoder__mode12(
++    const wuffs_webp__decoder* self,
++    uint8_t a_l,
++    uint8_t a_t,
++    uint8_t a_tl);
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint8_t
++wuffs_webp__decoder__mode13(
++    const wuffs_webp__decoder* self,
++    uint8_t a_l,
++    uint8_t a_t,
++    uint8_t a_tl);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_webp__decoder__apply_transform_cross_color(
++    wuffs_webp__decoder* self,
++    wuffs_base__slice_u8 a_pix,
++    wuffs_base__slice_u8 a_tile_data);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_webp__decoder__apply_transform_subtract_green(
++    wuffs_webp__decoder* self,
++    wuffs_base__slice_u8 a_pix);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_webp__decoder__apply_transform_color_indexing(
++    wuffs_webp__decoder* self,
++    wuffs_base__slice_u8 a_pix);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__do_decode_image_config(
++    wuffs_webp__decoder* self,
++    wuffs_base__image_config* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__do_decode_image_config_limited(
++    wuffs_webp__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__do_decode_image_config_limited_vp8l(
++    wuffs_webp__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__do_decode_frame_config(
++    wuffs_webp__decoder* self,
++    wuffs_base__frame_config* a_dst,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__do_decode_frame(
++    wuffs_webp__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__decode_transform(
++    wuffs_webp__decoder* self,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__decode_color_cache_parameters(
++    wuffs_webp__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__decode_hg_table(
++    wuffs_webp__decoder* self,
++    wuffs_base__io_buffer* a_src,
++    uint32_t a_width,
++    wuffs_base__slice_u8 a_workbuf);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__decode_pixels(
++    wuffs_webp__decoder* self,
++    wuffs_base__slice_u8 a_dst,
++    wuffs_base__io_buffer* a_src,
++    uint32_t a_width,
++    uint32_t a_height,
++    wuffs_base__slice_u8 a_tile_data,
++    uint32_t a_tile_size_log2);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__swizzle(
++    wuffs_webp__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__slice_u8 a_src,
++    wuffs_base__pixel_blend a_blend);
++
++// ---------------- VTables
++
++const wuffs_base__image_decoder__func_ptrs
++wuffs_webp__decoder__func_ptrs_for__wuffs_base__image_decoder = {
++  (wuffs_base__status(*)(void*,
++      wuffs_base__pixel_buffer*,
++      wuffs_base__io_buffer*,
++      wuffs_base__pixel_blend,
++      wuffs_base__slice_u8,
++      wuffs_base__decode_frame_options*))(&wuffs_webp__decoder__decode_frame),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__frame_config*,
++      wuffs_base__io_buffer*))(&wuffs_webp__decoder__decode_frame_config),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__image_config*,
++      wuffs_base__io_buffer*))(&wuffs_webp__decoder__decode_image_config),
++  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_webp__decoder__frame_dirty_rect),
++  (uint64_t(*)(const void*,
++      uint32_t))(&wuffs_webp__decoder__get_quirk),
++  (uint32_t(*)(const void*))(&wuffs_webp__decoder__num_animation_loops),
++  (uint64_t(*)(const void*))(&wuffs_webp__decoder__num_decoded_frame_configs),
++  (uint64_t(*)(const void*))(&wuffs_webp__decoder__num_decoded_frames),
++  (wuffs_base__status(*)(void*,
++      uint64_t,
++      uint64_t))(&wuffs_webp__decoder__restart_frame),
++  (wuffs_base__status(*)(void*,
++      uint32_t,
++      uint64_t))(&wuffs_webp__decoder__set_quirk),
++  (wuffs_base__empty_struct(*)(void*,
++      uint32_t,
++      bool))(&wuffs_webp__decoder__set_report_metadata),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__io_buffer*,
++      wuffs_base__more_information*,
++      wuffs_base__io_buffer*))(&wuffs_webp__decoder__tell_me_more),
++  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_webp__decoder__workbuf_len),
++};
++
++// ---------------- Initializer Implementations
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_webp__decoder__initialize(
++    wuffs_webp__decoder* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options){
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++  }
++  if (sizeof(*self) != sizeof_star_self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  }
++  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
++      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++  }
++
++  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
++    // The whole point of this if-check is to detect an uninitialized *self.
++    // We disable the warning on GCC. Clang-5.0 does not have this warning.
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++#endif
++    if (self->private_impl.magic != 0) {
++      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++    }
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++  } else {
++    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
++      memset(self, 0, sizeof(*self));
++      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
++    } else {
++      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++    }
++  }
++
++  self->private_impl.magic = WUFFS_BASE__MAGIC;
++  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
++      wuffs_base__image_decoder__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
++      (const void*)(&wuffs_webp__decoder__func_ptrs_for__wuffs_base__image_decoder);
++  return wuffs_base__make_status(NULL);
++}
++
++wuffs_webp__decoder*
++wuffs_webp__decoder__alloc(void) {
++  wuffs_webp__decoder* x =
++      (wuffs_webp__decoder*)(calloc(1, sizeof(wuffs_webp__decoder)));
++  if (!x) {
++    return NULL;
+   }
+-  return wuffs_base__make_empty_struct();
++  if (wuffs_webp__decoder__initialize(
++      x, sizeof(wuffs_webp__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++    free(x);
++    return NULL;
++  }
++  return x;
+ }
+ 
+-// -------- func png.decoder.tell_me_more
++size_t
++sizeof__wuffs_webp__decoder(void) {
++  return sizeof(wuffs_webp__decoder);
++}
++
++// ---------------- Function Implementations
++
++// -------- func webp.decoder.decode_huffman_groups
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_png__decoder__tell_me_more(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__more_information* a_minfo,
+-    wuffs_base__io_buffer* a_src) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-  if (!a_dst || !a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 4)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+-  }
+-  self->private_impl.active_coroutine = 0;
++static wuffs_base__status
++wuffs_webp__decoder__decode_huffman_groups(
++    wuffs_webp__decoder* self,
++    wuffs_base__io_buffer* a_src,
++    uint32_t a_n_huffman_groups) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++  uint32_t v_hg = 0;
++  uint32_t v_ht = 0;
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_tell_me_more[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_huffman_groups;
++  if (coro_susp_point) {
++    v_hg = self->private_data.s_decode_huffman_groups.v_hg;
++    v_ht = self->private_data.s_decode_huffman_groups.v_ht;
++  }
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    while (true) {
+-      {
+-        wuffs_base__status t_0 = wuffs_png__decoder__do_tell_me_more(self, a_dst, a_minfo, a_src);
+-        v_status = t_0;
+-      }
+-      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_png__error__truncated_input);
+-        goto exit;
++    v_hg = 0u;
++    while (v_hg < a_n_huffman_groups) {
++      v_ht = 0u;
++      while (v_ht < 5u) {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        status = wuffs_webp__decoder__decode_huffman_tree(self, a_src, v_hg, v_ht);
++        if (status.repr) {
++          goto suspend;
++        }
++        v_ht += 1u;
+       }
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++      v_hg += 1u;
+     }
+ 
++    goto ok;
+     ok:
+-    self->private_impl.p_tell_me_more[0] = 0;
++    self->private_impl.p_decode_huffman_groups = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_tell_me_more[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 4 : 0;
++  self->private_impl.p_decode_huffman_groups = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_huffman_groups.v_hg = v_hg;
++  self->private_data.s_decode_huffman_groups.v_ht = v_ht;
+ 
+   goto exit;
+   exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-  }
+   return status;
+ }
+ 
+-// -------- func png.decoder.do_tell_me_more
++// -------- func webp.decoder.decode_huffman_tree
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_png__decoder__do_tell_me_more(
+-    wuffs_png__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__more_information* a_minfo,
+-    wuffs_base__io_buffer* a_src) {
++wuffs_webp__decoder__decode_huffman_tree(
++    wuffs_webp__decoder* self,
++    wuffs_base__io_buffer* a_src,
++    uint32_t a_hg,
++    uint32_t a_ht) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint8_t v_c = 0;
+-  uint16_t v_c2 = 0;
+-  wuffs_base__io_buffer u_w = wuffs_base__empty_io_buffer();
+-  wuffs_base__io_buffer* v_w = &u_w;
+-  uint8_t* iop_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io0_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io1_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io2_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint64_t v_num_written = 0;
+-  uint64_t v_w_mark = 0;
+-  uint64_t v_r_mark = 0;
+-  wuffs_base__status v_zlib_status = wuffs_base__make_status(NULL);
++  uint8_t v_c8 = 0;
++  uint32_t v_use_simple = 0;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-  uint8_t* iop_a_dst = NULL;
+-  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_dst && a_dst->data.ptr) {
+-    io0_a_dst = a_dst->data.ptr;
+-    io1_a_dst = io0_a_dst + a_dst->meta.wi;
+-    iop_a_dst = io1_a_dst;
+-    io2_a_dst = io0_a_dst + a_dst->data.len;
+-    if (a_dst->meta.closed) {
+-      io2_a_dst = iop_a_dst;
+-    }
+-  }
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -58130,462 +71941,105 @@ wuffs_png__decoder__do_tell_me_more(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_tell_me_more[0];
+-  if (coro_susp_point) {
+-    v_zlib_status = self->private_data.s_do_tell_me_more[0].v_zlib_status;
+-  }
++  uint32_t coro_susp_point = self->private_impl.p_decode_huffman_tree;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if ((self->private_impl.f_call_sequence & 16u) == 0u) {
+-      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
+-      goto exit;
+-    }
+-    if (self->private_impl.f_metadata_fourcc == 0u) {
+-      status = wuffs_base__make_status(wuffs_base__error__no_more_information);
+-      goto exit;
++    if (a_ht >= 4u) {
++      self->private_impl.f_ht_n_symbols = 40u;
++    } else if (a_ht > 0u) {
++      self->private_impl.f_ht_n_symbols = 256u;
++    } else if (self->private_impl.f_color_cache_bits == 0u) {
++      self->private_impl.f_ht_n_symbols = 280u;
++    } else {
++      self->private_impl.f_ht_n_symbols = (280u + (((uint32_t)(1u)) << self->private_impl.f_color_cache_bits));
+     }
+-    do {
+-      if (self->private_impl.f_metadata_flavor == 3u) {
+-        while (true) {
+-          if (wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))) != self->private_impl.f_metadata_y) {
+-            status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position);
+-            goto exit;
+-          } else if (a_minfo != NULL) {
+-            wuffs_base__more_information__set(a_minfo,
+-                self->private_impl.f_metadata_flavor,
+-                self->private_impl.f_metadata_fourcc,
+-                self->private_impl.f_metadata_x,
+-                self->private_impl.f_metadata_y,
+-                self->private_impl.f_metadata_z);
+-          }
+-          if (self->private_impl.f_metadata_y >= self->private_impl.f_metadata_z) {
+-            goto label__goto_done__break;
+-          }
+-          self->private_impl.f_metadata_y = self->private_impl.f_metadata_z;
+-          status = wuffs_base__make_status(wuffs_base__suspension__even_more_information);
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    if (self->private_impl.f_n_bits < 1u) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
+         }
++        uint8_t t_0 = *iop_a_src++;
++        v_c8 = t_0;
+       }
+-      if (self->private_impl.f_metadata_is_zlib_compressed) {
+-        if (self->private_impl.f_zlib_is_dirty) {
+-          wuffs_base__ignore_status(wuffs_zlib__decoder__initialize(&self->private_data.f_zlib,
+-              sizeof (wuffs_zlib__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
+-          if (self->private_impl.f_ignore_checksum) {
+-            wuffs_zlib__decoder__set_quirk(&self->private_data.f_zlib, 1u, 1u);
+-          }
+-        }
+-        self->private_impl.f_zlib_is_dirty = true;
+-        self->private_impl.f_ztxt_hist_pos = 0u;
++      self->private_impl.f_bits = ((uint32_t)(v_c8));
++      self->private_impl.f_n_bits = 8u;
++    }
++    v_use_simple = (self->private_impl.f_bits & 1u);
++    self->private_impl.f_bits >>= 1u;
++    self->private_impl.f_n_bits -= 1u;
++    if (v_use_simple != 0u) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+       }
+-      label__loop__continue:;
+-      while (true) {
+-        if (a_minfo != NULL) {
+-          wuffs_base__more_information__set(a_minfo,
+-              self->private_impl.f_metadata_flavor,
+-              self->private_impl.f_metadata_fourcc,
+-              self->private_impl.f_metadata_x,
+-              self->private_impl.f_metadata_y,
+-              self->private_impl.f_metadata_z);
+-        }
+-        if (self->private_impl.f_metadata_flavor != 4u) {
+-          break;
+-        }
+-        if (self->private_impl.f_metadata_is_zlib_compressed) {
+-          if (self->private_impl.f_chunk_type == 1346585449u) {
+-            {
+-              const bool o_0_closed_a_src = a_src->meta.closed;
+-              const uint8_t *o_0_io2_a_src = io2_a_src;
+-              wuffs_base__io_reader__limit(&io2_a_src, iop_a_src,
+-                  ((uint64_t)(self->private_impl.f_chunk_length)));
+-              if (a_src) {
+-                size_t n = ((size_t)(io2_a_src - a_src->data.ptr));
+-                a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n);
+-                a_src->meta.wi = n;
+-              }
+-              v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
+-              {
+-                if (a_dst) {
+-                  a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-                }
+-                if (a_src) {
+-                  a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-                }
+-                wuffs_base__status t_0 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, a_dst, a_src, wuffs_base__utility__empty_slice_u8());
+-                v_zlib_status = t_0;
+-                if (a_dst) {
+-                  iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
+-                }
+-                if (a_src) {
+-                  iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-                }
+-              }
+-              wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)(wuffs_base__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))))));
+-              io2_a_src = o_0_io2_a_src;
+-              if (a_src) {
+-                a_src->meta.closed = o_0_closed_a_src;
+-                a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
+-              }
+-            }
+-            if (wuffs_base__status__is_ok(&v_zlib_status)) {
+-              self->private_impl.f_metadata_is_zlib_compressed = false;
+-              break;
+-            } else if ( ! wuffs_base__status__is_suspension(&v_zlib_status)) {
+-              status = v_zlib_status;
+-              if (wuffs_base__status__is_error(&status)) {
+-                goto exit;
+-              } else if (wuffs_base__status__is_suspension(&status)) {
+-                status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
+-                goto exit;
+-              }
+-              goto ok;
+-            }
+-            status = v_zlib_status;
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
+-          } else if (self->private_impl.f_chunk_type == 1951945833u) {
+-            {
+-              const bool o_1_closed_a_src = a_src->meta.closed;
+-              const uint8_t *o_1_io2_a_src = io2_a_src;
+-              wuffs_base__io_reader__limit(&io2_a_src, iop_a_src,
+-                  ((uint64_t)(self->private_impl.f_chunk_length)));
+-              if (a_src) {
+-                size_t n = ((size_t)(io2_a_src - a_src->data.ptr));
+-                a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n);
+-                a_src->meta.wi = n;
+-              }
+-              v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
+-              {
+-                if (a_dst) {
+-                  a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-                }
+-                if (a_src) {
+-                  a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-                }
+-                wuffs_base__status t_1 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, a_dst, a_src, wuffs_base__utility__empty_slice_u8());
+-                v_zlib_status = t_1;
+-                if (a_dst) {
+-                  iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
+-                }
+-                if (a_src) {
+-                  iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-                }
+-              }
+-              wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)(wuffs_base__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))))));
+-              io2_a_src = o_1_io2_a_src;
+-              if (a_src) {
+-                a_src->meta.closed = o_1_closed_a_src;
+-                a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
+-              }
+-            }
+-            if (wuffs_base__status__is_ok(&v_zlib_status)) {
+-              self->private_impl.f_metadata_is_zlib_compressed = false;
+-              break;
+-            } else if ( ! wuffs_base__status__is_suspension(&v_zlib_status)) {
+-              status = v_zlib_status;
+-              if (wuffs_base__status__is_error(&status)) {
+-                goto exit;
+-              } else if (wuffs_base__status__is_suspension(&status)) {
+-                status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
+-                goto exit;
+-              }
+-              goto ok;
+-            }
+-            status = v_zlib_status;
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
+-          } else if (self->private_impl.f_chunk_type == 1951945850u) {
+-            if (self->private_impl.f_ztxt_ri == self->private_impl.f_ztxt_wi) {
+-              {
+-                wuffs_base__io_buffer* o_2_v_w = v_w;
+-                uint8_t *o_2_iop_v_w = iop_v_w;
+-                uint8_t *o_2_io0_v_w = io0_v_w;
+-                uint8_t *o_2_io1_v_w = io1_v_w;
+-                uint8_t *o_2_io2_v_w = io2_v_w;
+-                v_w = wuffs_base__io_writer__set(
+-                    &u_w,
+-                    &iop_v_w,
+-                    &io0_v_w,
+-                    &io1_v_w,
+-                    &io2_v_w,
+-                    wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024),
+-                    self->private_impl.f_ztxt_hist_pos);
+-                {
+-                  const bool o_3_closed_a_src = a_src->meta.closed;
+-                  const uint8_t *o_3_io2_a_src = io2_a_src;
+-                  wuffs_base__io_reader__limit(&io2_a_src, iop_a_src,
+-                      ((uint64_t)(self->private_impl.f_chunk_length)));
+-                  if (a_src) {
+-                    size_t n = ((size_t)(io2_a_src - a_src->data.ptr));
+-                    a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n);
+-                    a_src->meta.wi = n;
+-                  }
+-                  v_w_mark = ((uint64_t)(iop_v_w - io0_v_w));
+-                  v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
+-                  {
+-                    u_w.meta.wi = ((size_t)(iop_v_w - u_w.data.ptr));
+-                    if (a_src) {
+-                      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-                    }
+-                    wuffs_base__status t_2 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, v_w, a_src, wuffs_base__utility__empty_slice_u8());
+-                    v_zlib_status = t_2;
+-                    iop_v_w = u_w.data.ptr + u_w.meta.wi;
+-                    if (a_src) {
+-                      iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-                    }
+-                  }
+-                  wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)(wuffs_base__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))))));
+-                  v_num_written = wuffs_base__io__count_since(v_w_mark, ((uint64_t)(iop_v_w - io0_v_w)));
+-                  io2_a_src = o_3_io2_a_src;
+-                  if (a_src) {
+-                    a_src->meta.closed = o_3_closed_a_src;
+-                    a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
+-                  }
+-                }
+-                v_w = o_2_v_w;
+-                iop_v_w = o_2_iop_v_w;
+-                io0_v_w = o_2_io0_v_w;
+-                io1_v_w = o_2_io1_v_w;
+-                io2_v_w = o_2_io2_v_w;
+-              }
+-              if (v_num_written > 1024u) {
+-                status = wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_i_o);
+-                goto exit;
+-              }
+-              self->private_impl.f_ztxt_ri = 0u;
+-              self->private_impl.f_ztxt_wi = ((uint32_t)(v_num_written));
+-              wuffs_base__u64__sat_add_indirect(&self->private_impl.f_ztxt_hist_pos, v_num_written);
+-            }
+-            while (self->private_impl.f_ztxt_ri < self->private_impl.f_ztxt_wi) {
+-              v_c2 = WUFFS_PNG__LATIN_1[self->private_data.f_dst_palette[self->private_impl.f_ztxt_ri]];
+-              if (v_c2 == 0u) {
+-                status = wuffs_base__make_status(wuffs_png__error__bad_text_chunk_not_latin_1);
+-                goto exit;
+-              } else if (v_c2 <= 127u) {
+-                if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-                  status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
+-                  goto label__loop__continue;
+-                }
+-                self->private_impl.f_ztxt_ri += 1u;
+-                (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(v_c2))), iop_a_dst += 1);
+-              } else {
+-                if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 1u) {
+-                  status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
+-                  goto label__loop__continue;
+-                }
+-                self->private_impl.f_ztxt_ri += 1u;
+-                (wuffs_base__poke_u16le__no_bounds_check(iop_a_dst, v_c2), iop_a_dst += 2);
+-              }
+-            }
+-            if (wuffs_base__status__is_ok(&v_zlib_status)) {
+-              self->private_impl.f_metadata_is_zlib_compressed = false;
+-              break;
+-            } else if ( ! wuffs_base__status__is_suspension(&v_zlib_status)) {
+-              status = v_zlib_status;
+-              if (wuffs_base__status__is_error(&status)) {
+-                goto exit;
+-              } else if (wuffs_base__status__is_suspension(&status)) {
+-                status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
+-                goto exit;
+-              }
+-              goto ok;
+-            } else if (v_zlib_status.repr != wuffs_base__suspension__short_write) {
+-              status = v_zlib_status;
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
+-            }
+-          } else {
+-            status = wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_chunk_type);
+-            goto exit;
+-          }
+-        } else if ((self->private_impl.f_chunk_type == 1951945833u) && (self->private_impl.f_metadata_fourcc == 1263947862u)) {
+-          while (true) {
+-            if (self->private_impl.f_chunk_length <= 0u) {
+-              goto label__loop__break;
+-            } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
+-              goto label__loop__continue;
+-            } else if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
+-              goto label__loop__continue;
+-            }
+-            self->private_impl.f_chunk_length -= 1u;
+-            v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-            iop_a_src += 1u;
+-            (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_c), iop_a_dst += 1);
+-          }
+-        } else {
+-          while (true) {
+-            if (self->private_impl.f_chunk_length <= 0u) {
+-              if (self->private_impl.f_metadata_fourcc == 1263947851u) {
+-                status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-                goto exit;
+-              }
+-              goto label__loop__break;
+-            } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
+-              goto label__loop__continue;
+-            }
+-            v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-            if (v_c == 0u) {
+-              self->private_impl.f_chunk_length -= 1u;
+-              iop_a_src += 1u;
+-              goto label__loop__break;
+-            }
+-            v_c2 = WUFFS_PNG__LATIN_1[v_c];
+-            if (v_c2 == 0u) {
+-              status = wuffs_base__make_status(wuffs_png__error__bad_text_chunk_not_latin_1);
+-              goto exit;
+-            } else if (v_c2 <= 127u) {
+-              if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
+-                goto label__loop__continue;
+-              }
+-              self->private_impl.f_chunk_length -= 1u;
+-              iop_a_src += 1u;
+-              (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(v_c2))), iop_a_dst += 1);
+-            } else {
+-              if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 1u) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_write);
+-                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11);
+-                goto label__loop__continue;
+-              }
+-              self->private_impl.f_chunk_length -= 1u;
+-              iop_a_src += 1u;
+-              (wuffs_base__poke_u16le__no_bounds_check(iop_a_dst, v_c2), iop_a_dst += 2);
+-            }
+-          }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++      status = wuffs_webp__decoder__decode_huffman_tree_simple(self, a_src, a_hg, a_ht);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++    } else {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++      status = wuffs_webp__decoder__decode_code_length_code_lengths(self, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++      v_status = wuffs_webp__decoder__build_code_lengths_huffman_nodes(self);
++      if ( ! wuffs_base__status__is_ok(&v_status)) {
++        status = v_status;
++        if (wuffs_base__status__is_error(&status)) {
++          goto exit;
++        } else if (wuffs_base__status__is_suspension(&status)) {
++          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++          goto exit;
+         }
++        goto ok;
+       }
+-      label__loop__break:;
+-      if (self->private_impl.f_metadata_fourcc == 1263947851u) {
+-        self->private_impl.f_metadata_fourcc = 1263947862u;
+-        if (self->private_impl.f_chunk_type == 1951945833u) {
+-          if (self->private_impl.f_chunk_length <= 1u) {
+-            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-            goto exit;
+-          }
+-          self->private_impl.f_chunk_length -= 2u;
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint8_t t_3 = *iop_a_src++;
+-            v_c = t_3;
+-          }
+-          if (v_c == 0u) {
+-            self->private_impl.f_metadata_is_zlib_compressed = false;
+-          } else if (v_c == 1u) {
+-            self->private_impl.f_metadata_is_zlib_compressed = true;
+-          } else {
+-            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-            goto exit;
+-          }
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint8_t t_4 = *iop_a_src++;
+-            v_c = t_4;
+-          }
+-          if ((v_c != 0u) && self->private_impl.f_metadata_is_zlib_compressed) {
+-            status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method);
+-            goto exit;
+-          }
+-          self->private_impl.f_metadata_fourcc -= 2u;
+-          while (self->private_impl.f_metadata_fourcc != 1263947862u) {
+-            self->private_impl.f_metadata_fourcc += 1u;
+-            while (true) {
+-              if (self->private_impl.f_chunk_length <= 0u) {
+-                status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-                goto exit;
+-              }
+-              self->private_impl.f_chunk_length -= 1u;
+-              {
+-                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
+-                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                  goto suspend;
+-                }
+-                uint8_t t_5 = *iop_a_src++;
+-                v_c = t_5;
+-              }
+-              if (v_c == 0u) {
+-                break;
+-              }
+-            }
+-          }
+-        } else if (self->private_impl.f_chunk_type == 1951945850u) {
+-          if (self->private_impl.f_chunk_length <= 0u) {
+-            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-            goto exit;
+-          }
+-          self->private_impl.f_chunk_length -= 1u;
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
+-            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              goto suspend;
+-            }
+-            uint8_t t_6 = *iop_a_src++;
+-            v_c = t_6;
+-          }
+-          if (v_c != 0u) {
+-            status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method);
+-            goto exit;
+-          }
+-          self->private_impl.f_metadata_is_zlib_compressed = true;
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++      status = wuffs_webp__decoder__build_code_lengths(self, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++      v_status = wuffs_webp__decoder__build_huffman_nodes(self, a_hg, a_ht);
++      if ( ! wuffs_base__status__is_ok(&v_status)) {
++        status = v_status;
++        if (wuffs_base__status__is_error(&status)) {
++          goto exit;
++        } else if (wuffs_base__status__is_suspension(&status)) {
++          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++          goto exit;
+         }
+-        self->private_impl.f_call_sequence &= 239u;
+-        status = wuffs_base__make_status(NULL);
+         goto ok;
+       }
+-    } while (0);
+-    label__goto_done__break:;
+-    if (self->private_impl.f_chunk_length != 0u) {
+-      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
+-      goto exit;
+-    }
+-    self->private_data.s_do_tell_me_more[0].scratch = 4u;
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
+-    if (self->private_data.s_do_tell_me_more[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-      self->private_data.s_do_tell_me_more[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-      iop_a_src = io2_a_src;
+-      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-      goto suspend;
+     }
+-    iop_a_src += self->private_data.s_do_tell_me_more[0].scratch;
+-    self->private_impl.f_metadata_flavor = 0u;
+-    self->private_impl.f_metadata_fourcc = 0u;
+-    self->private_impl.f_metadata_x = 0u;
+-    self->private_impl.f_metadata_y = 0u;
+-    self->private_impl.f_metadata_z = 0u;
+-    self->private_impl.f_call_sequence &= 239u;
+-    status = wuffs_base__make_status(NULL);
+-    goto ok;
+ 
+     ok:
+-    self->private_impl.p_do_tell_me_more[0] = 0;
++    self->private_impl.p_decode_huffman_tree = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_do_tell_me_more[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_do_tell_me_more[0].v_zlib_status = v_zlib_status;
++  self->private_impl.p_decode_huffman_tree = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+   goto exit;
+   exit:
+-  if (a_dst && a_dst->data.ptr) {
+-    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+-  }
+   if (a_src && a_src->data.ptr) {
+     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+@@ -58593,563 +72047,1574 @@ wuffs_png__decoder__do_tell_me_more(
+   return status;
+ }
+ 
+-// -------- func png.decoder.history_retain_length
++// -------- func webp.decoder.decode_huffman_tree_simple
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_png__decoder__history_retain_length(
+-    const wuffs_png__decoder* self) {
+-  if (!self) {
+-    return 0;
++static wuffs_base__status
++wuffs_webp__decoder__decode_huffman_tree_simple(
++    wuffs_webp__decoder* self,
++    wuffs_base__io_buffer* a_src,
++    uint32_t a_hg,
++    uint32_t a_ht) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_c8 = 0;
++  uint32_t v_use_second_symbol = 0;
++  uint32_t v_first_symbol_n_bits = 0;
++  uint32_t v_symbol0 = 0;
++  uint32_t v_symbol1 = 0;
++  uint32_t v_base_offset = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_huffman_tree_simple;
++  if (coro_susp_point) {
++    v_use_second_symbol = self->private_data.s_decode_huffman_tree_simple.v_use_second_symbol;
++    v_first_symbol_n_bits = self->private_data.s_decode_huffman_tree_simple.v_first_symbol_n_bits;
++    v_symbol0 = self->private_data.s_decode_huffman_tree_simple.v_symbol0;
++    v_base_offset = self->private_data.s_decode_huffman_tree_simple.v_base_offset;
+   }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-  return 0u;
++    if (self->private_impl.f_n_bits < 2u) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_0 = *iop_a_src++;
++        v_c8 = t_0;
++      }
++      if (self->private_impl.f_n_bits >= 2u) {
++        status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
++        goto exit;
++      }
++      self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
++      self->private_impl.f_n_bits += 8u;
++    }
++    v_use_second_symbol = (self->private_impl.f_bits & 1u);
++    v_first_symbol_n_bits = ((((self->private_impl.f_bits & 2u) >> 1u) * 7u) + 1u);
++    self->private_impl.f_bits >>= 2u;
++    self->private_impl.f_n_bits -= 2u;
++    if (self->private_impl.f_n_bits < v_first_symbol_n_bits) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_1 = *iop_a_src++;
++        v_c8 = t_1;
++      }
++      if (self->private_impl.f_n_bits >= v_first_symbol_n_bits) {
++        status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
++        goto exit;
++      }
++      self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
++      self->private_impl.f_n_bits += 8u;
++    }
++    v_symbol0 = (self->private_impl.f_bits & ((((uint32_t)(1u)) << v_first_symbol_n_bits) - 1u));
++    self->private_impl.f_bits >>= v_first_symbol_n_bits;
++    self->private_impl.f_n_bits -= v_first_symbol_n_bits;
++    v_base_offset = ((uint32_t)(WUFFS_WEBP__HUFFMAN_TABLE_BASE_OFFSETS[a_ht]));
++    if (v_use_second_symbol != 0u) {
++      if (self->private_impl.f_n_bits < 8u) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_2 = *iop_a_src++;
++          v_c8 = t_2;
++        }
++        if (self->private_impl.f_n_bits >= 8u) {
++          status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
++          goto exit;
++        }
++        self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
++        self->private_impl.f_n_bits += 8u;
++      }
++      v_symbol1 = (self->private_impl.f_bits & 255u);
++      self->private_impl.f_bits >>= 8u;
++      self->private_impl.f_n_bits -= 8u;
++      self->private_data.f_huffman_nodes[a_hg][(v_base_offset + 0u)] = ((uint16_t)((v_base_offset + 1u)));
++      self->private_data.f_huffman_nodes[a_hg][(v_base_offset + 1u)] = ((uint16_t)((v_symbol0 | 32768u)));
++      self->private_data.f_huffman_nodes[a_hg][(v_base_offset + 2u)] = ((uint16_t)((v_symbol1 | 32768u)));
++    } else {
++      self->private_data.f_huffman_nodes[a_hg][v_base_offset] = ((uint16_t)((v_symbol0 | 32768u)));
++    }
++
++    goto ok;
++    ok:
++    self->private_impl.p_decode_huffman_tree_simple = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_huffman_tree_simple = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_huffman_tree_simple.v_use_second_symbol = v_use_second_symbol;
++  self->private_data.s_decode_huffman_tree_simple.v_first_symbol_n_bits = v_first_symbol_n_bits;
++  self->private_data.s_decode_huffman_tree_simple.v_symbol0 = v_symbol0;
++  self->private_data.s_decode_huffman_tree_simple.v_base_offset = v_base_offset;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
+ }
+ 
+-// -------- func png.decoder.workbuf_len
++// -------- func webp.decoder.decode_code_length_code_lengths
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_png__decoder__workbuf_len(
+-    const wuffs_png__decoder* self) {
+-  if (!self) {
+-    return wuffs_base__utility__empty_range_ii_u64();
++static wuffs_base__status
++wuffs_webp__decoder__decode_code_length_code_lengths(
++    wuffs_webp__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_c8 = 0;
++  uint32_t v_n_codes = 0;
++  uint32_t v_i = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_range_ii_u64();
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_code_length_code_lengths;
++  if (coro_susp_point) {
++    v_n_codes = self->private_data.s_decode_code_length_code_lengths.v_n_codes;
++    v_i = self->private_data.s_decode_code_length_code_lengths.v_i;
+   }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-  return wuffs_base__utility__make_range_ii_u64(self->private_impl.f_overall_workbuf_length, self->private_impl.f_overall_workbuf_length);
++    if (self->private_impl.f_n_bits < 4u) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_0 = *iop_a_src++;
++        v_c8 = t_0;
++      }
++      if (self->private_impl.f_n_bits >= 4u) {
++        status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
++        goto exit;
++      }
++      self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
++      self->private_impl.f_n_bits += 8u;
++    }
++    v_n_codes = ((self->private_impl.f_bits & 15u) + 4u);
++    self->private_impl.f_bits >>= 4u;
++    self->private_impl.f_n_bits -= 4u;
++    v_i = 0u;
++    while (v_i < v_n_codes) {
++      if (self->private_impl.f_n_bits < 3u) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_1 = *iop_a_src++;
++          v_c8 = t_1;
++        }
++        if (self->private_impl.f_n_bits >= 3u) {
++          status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
++          goto exit;
++        }
++        self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
++        self->private_impl.f_n_bits += 8u;
++      }
++      self->private_impl.f_code_length_code_lengths[WUFFS_WEBP__CODE_LENGTH_CODE_ORDER[v_i]] = ((uint8_t)((self->private_impl.f_bits & 7u)));
++      self->private_impl.f_bits >>= 3u;
++      self->private_impl.f_n_bits -= 3u;
++      v_i += 1u;
++    }
++    while (v_i < 19u) {
++      self->private_impl.f_code_length_code_lengths[WUFFS_WEBP__CODE_LENGTH_CODE_ORDER[v_i]] = 0u;
++      v_i += 1u;
++    }
++
++    goto ok;
++    ok:
++    self->private_impl.p_decode_code_length_code_lengths = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_code_length_code_lengths = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_code_length_code_lengths.v_n_codes = v_n_codes;
++  self->private_data.s_decode_code_length_code_lengths.v_i = v_i;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
+ }
+ 
+-// -------- func png.decoder.filter_and_swizzle
++// -------- func webp.decoder.build_code_lengths_huffman_nodes
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_png__decoder__filter_and_swizzle(
+-    wuffs_png__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__slice_u8 a_workbuf) {
+-  return (*self->private_impl.choosy_filter_and_swizzle)(self, a_dst, a_workbuf);
++wuffs_webp__decoder__build_code_lengths_huffman_nodes(
++    wuffs_webp__decoder* self) {
++  uint32_t v_code_bits = 0;
++  uint32_t v_code_len = 0;
++  uint32_t v_symbol = 0;
++  uint32_t v_histogram[8] = {0};
++  uint32_t v_n_used_symbols = 0;
++  uint32_t v_last_used_symbol = 0;
++  uint32_t v_subscription_weight = 0;
++  uint32_t v_subscription_total = 0;
++  uint32_t v_curr_code = 0;
++  uint32_t v_next_codes[9] = {0};
++  uint32_t v_n_branches = 0;
++  uint32_t v_h = 0;
++  uint32_t v_children = 0;
++  uint16_t v_node = 0;
++
++  v_symbol = 0u;
++  while (v_symbol < 19u) {
++    v_code_len = ((uint32_t)(self->private_impl.f_code_length_code_lengths[v_symbol]));
++    if (v_code_len != 0u) {
++      v_histogram[v_code_len] += 1u;
++      v_n_used_symbols += 1u;
++      v_last_used_symbol = v_symbol;
++    }
++    v_symbol += 1u;
++  }
++  if (v_n_used_symbols < 1u) {
++    return wuffs_base__make_status(wuffs_webp__error__bad_huffman_code);
++  } else if (v_n_used_symbols == 1u) {
++    self->private_data.f_code_lengths_huffman_nodes[0u] = ((uint16_t)((v_last_used_symbol | 32768u)));
++    return wuffs_base__make_status(NULL);
++  }
++  v_subscription_weight = 16384u;
++  v_code_len = 1u;
++  while (true) {
++    v_curr_code = ((uint32_t)(((uint32_t)(v_curr_code + v_histogram[v_code_len])) << 1u));
++    v_next_codes[(v_code_len + 1u)] = v_curr_code;
++    v_subscription_total += ((uint32_t)(v_subscription_weight * v_histogram[v_code_len]));
++    v_subscription_weight >>= 1u;
++    if (v_code_len >= 7u) {
++      break;
++    }
++    v_code_len += 1u;
++  }
++  if (v_subscription_total > 32768u) {
++    return wuffs_base__make_status(wuffs_webp__error__bad_huffman_code_over_subscribed);
++  } else if (v_subscription_total < 32768u) {
++    return wuffs_base__make_status(wuffs_webp__error__bad_huffman_code_under_subscribed);
++  }
++  self->private_data.f_code_lengths_huffman_nodes[0u] = 0u;
++  v_symbol = 0u;
++  while (v_symbol < 19u) {
++    v_code_len = ((uint32_t)(self->private_impl.f_code_length_code_lengths[v_symbol]));
++    if (v_code_len > 0u) {
++      v_code_bits = v_next_codes[v_code_len];
++      v_next_codes[v_code_len] += 1u;
++      v_code_bits <<= (32u - v_code_len);
++      v_h = 0u;
++      while (v_code_len > 0u) {
++        v_node = self->private_data.f_code_lengths_huffman_nodes[v_h];
++        if (v_node == 0u) {
++          v_children = ((uint32_t)(1u + ((uint32_t)(2u * v_n_branches))));
++          v_children = wuffs_base__u32__min(v_children, 35u);
++          self->private_data.f_code_lengths_huffman_nodes[v_h] = ((uint16_t)(v_children));
++          self->private_data.f_code_lengths_huffman_nodes[(v_children + 0u)] = 0u;
++          self->private_data.f_code_lengths_huffman_nodes[(v_children + 1u)] = 0u;
++          v_h = (v_children + (v_code_bits >> 31u));
++          v_n_branches += 1u;
++        } else {
++          v_children = ((uint32_t)(v_node));
++          v_h = (wuffs_base__u32__min(v_children, 35u) + (v_code_bits >> 31u));
++        }
++        v_code_bits <<= 1u;
++        v_code_len -= 1u;
++      }
++      self->private_data.f_code_lengths_huffman_nodes[v_h] = ((uint16_t)((v_symbol | 32768u)));
++    }
++    v_symbol += 1u;
++  }
++  return wuffs_base__make_status(NULL);
+ }
+ 
++// -------- func webp.decoder.build_huffman_nodes
++
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_png__decoder__filter_and_swizzle__choosy_default(
+-    wuffs_png__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__slice_u8 a_workbuf) {
+-  wuffs_base__pixel_format v_dst_pixfmt = {0};
+-  uint32_t v_dst_bits_per_pixel = 0;
+-  uint64_t v_dst_bytes_per_pixel = 0;
+-  uint64_t v_dst_bytes_per_row0 = 0;
+-  uint64_t v_dst_bytes_per_row1 = 0;
+-  wuffs_base__slice_u8 v_dst_palette = {0};
+-  wuffs_base__table_u8 v_tab = {0};
+-  uint32_t v_y = 0;
+-  wuffs_base__slice_u8 v_dst = {0};
+-  uint8_t v_filter = 0;
+-  wuffs_base__slice_u8 v_curr_row = {0};
+-  wuffs_base__slice_u8 v_prev_row = {0};
+-
+-  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
+-  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
+-  if ((v_dst_bits_per_pixel & 7u) != 0u) {
+-    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++wuffs_webp__decoder__build_huffman_nodes(
++    wuffs_webp__decoder* self,
++    uint32_t a_hg,
++    uint32_t a_ht) {
++  uint32_t v_base_offset = 0;
++  uint32_t v_code_bits = 0;
++  uint32_t v_code_len = 0;
++  uint32_t v_symbol = 0;
++  uint32_t v_histogram[16] = {0};
++  uint32_t v_n_used_symbols = 0;
++  uint32_t v_last_used_symbol = 0;
++  uint32_t v_subscription_weight = 0;
++  uint32_t v_subscription_total = 0;
++  uint32_t v_curr_code = 0;
++  uint32_t v_next_codes[17] = {0};
++  uint32_t v_n_branches = 0;
++  uint32_t v_h = 0;
++  uint32_t v_children = 0;
++  uint16_t v_node = 0;
++
++  v_base_offset = ((uint32_t)(WUFFS_WEBP__HUFFMAN_TABLE_BASE_OFFSETS[a_ht]));
++  v_symbol = 0u;
++  while (v_symbol < self->private_impl.f_ht_n_symbols) {
++    v_code_len = ((uint32_t)(((uint16_t)(self->private_data.f_code_lengths[v_symbol] & 15u))));
++    if (v_code_len != 0u) {
++      v_histogram[v_code_len] += 1u;
++      v_n_used_symbols += 1u;
++      v_last_used_symbol = v_symbol;
++    }
++    v_symbol += 1u;
++  }
++  if (v_n_used_symbols < 1u) {
++    return wuffs_base__make_status(wuffs_webp__error__bad_huffman_code);
++  } else if (v_n_used_symbols == 1u) {
++    self->private_data.f_huffman_nodes[a_hg][v_base_offset] = ((uint16_t)((v_last_used_symbol | 32768u)));
++    return wuffs_base__make_status(NULL);
+   }
+-  v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8u)));
+-  v_dst_bytes_per_row0 = (((uint64_t)(self->private_impl.f_frame_rect_x0)) * v_dst_bytes_per_pixel);
+-  v_dst_bytes_per_row1 = (((uint64_t)(self->private_impl.f_frame_rect_x1)) * v_dst_bytes_per_pixel);
+-  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024));
+-  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
+-  if (v_dst_bytes_per_row1 < ((uint64_t)(v_tab.width))) {
+-    v_tab = wuffs_base__table_u8__subtable_ij(v_tab,
+-        0u,
+-        0u,
+-        v_dst_bytes_per_row1,
+-        ((uint64_t)(v_tab.height)));
++  v_subscription_weight = 16384u;
++  v_code_len = 1u;
++  while (true) {
++    v_curr_code = ((uint32_t)(((uint32_t)(v_curr_code + v_histogram[v_code_len])) << 1u));
++    v_next_codes[(v_code_len + 1u)] = v_curr_code;
++    v_subscription_total += ((uint32_t)(v_subscription_weight * v_histogram[v_code_len]));
++    v_subscription_weight >>= 1u;
++    if (v_code_len >= 15u) {
++      break;
++    }
++    v_code_len += 1u;
++  }
++  if (v_subscription_total > 32768u) {
++    return wuffs_base__make_status(wuffs_webp__error__bad_huffman_code_over_subscribed);
++  } else if (v_subscription_total < 32768u) {
++    return wuffs_base__make_status(wuffs_webp__error__bad_huffman_code_under_subscribed);
++  }
++  self->private_data.f_huffman_nodes[a_hg][v_base_offset] = 0u;
++  v_symbol = 0u;
++  while (v_symbol < self->private_impl.f_ht_n_symbols) {
++    v_code_len = ((uint32_t)(((uint16_t)(self->private_data.f_code_lengths[v_symbol] & 15u))));
++    if (v_code_len != 0u) {
++      v_code_bits = v_next_codes[v_code_len];
++      v_next_codes[v_code_len] += 1u;
++      v_code_bits <<= (32u - v_code_len);
++      v_h = v_base_offset;
++      while (v_code_len > 0u) {
++        v_node = self->private_data.f_huffman_nodes[a_hg][v_h];
++        if (v_node == 0u) {
++          v_children = ((uint32_t)(v_base_offset + ((uint32_t)(1u + ((uint32_t)(2u * v_n_branches))))));
++          v_children = wuffs_base__u32__min(v_children, 6265u);
++          self->private_data.f_huffman_nodes[a_hg][v_h] = ((uint16_t)(v_children));
++          self->private_data.f_huffman_nodes[a_hg][(v_children + 0u)] = 0u;
++          self->private_data.f_huffman_nodes[a_hg][(v_children + 1u)] = 0u;
++          v_h = (v_children + (v_code_bits >> 31u));
++          v_n_branches += 1u;
++        } else {
++          v_children = ((uint32_t)(v_node));
++          v_h = (wuffs_base__u32__min(v_children, 6265u) + (v_code_bits >> 31u));
++        }
++        v_code_bits <<= 1u;
++        v_code_len -= 1u;
++      }
++      self->private_data.f_huffman_nodes[a_hg][v_h] = ((uint16_t)((v_symbol | 32768u)));
++    }
++    v_symbol += 1u;
+   }
+-  if (v_dst_bytes_per_row0 < ((uint64_t)(v_tab.width))) {
+-    v_tab = wuffs_base__table_u8__subtable_ij(v_tab,
+-        v_dst_bytes_per_row0,
+-        0u,
+-        ((uint64_t)(v_tab.width)),
+-        ((uint64_t)(v_tab.height)));
+-  } else {
+-    v_tab = wuffs_base__table_u8__subtable_ij(v_tab,
+-        0u,
+-        0u,
+-        0u,
+-        0u);
++  return wuffs_base__make_status(NULL);
++}
++
++// -------- func webp.decoder.build_code_lengths
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__build_code_lengths(
++    wuffs_webp__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_c8 = 0;
++  uint32_t v_use_length = 0;
++  uint32_t v_length_n_bits = 0;
++  uint32_t v_length = 0;
++  uint16_t v_prev_code_length = 0;
++  uint32_t v_h = 0;
++  uint32_t v_s = 0;
++  uint32_t v_s_max = 0;
++  uint16_t v_node = 0;
++  uint32_t v_symbol = 0;
++  uint16_t v_repeat_value = 0;
++  uint32_t v_repeat_n_bits = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+-  v_y = self->private_impl.f_frame_rect_y0;
+-  while (v_y < self->private_impl.f_frame_rect_y1) {
+-    v_dst = wuffs_base__table_u8__row_u32(v_tab, v_y);
+-    if (1u > ((uint64_t)(a_workbuf.len))) {
+-      return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length);
++
++  uint32_t coro_susp_point = self->private_impl.p_build_code_lengths;
++  if (coro_susp_point) {
++    v_length_n_bits = self->private_data.s_build_code_lengths.v_length_n_bits;
++    v_prev_code_length = self->private_data.s_build_code_lengths.v_prev_code_length;
++    v_s = self->private_data.s_build_code_lengths.v_s;
++    v_s_max = self->private_data.s_build_code_lengths.v_s_max;
++    v_node = self->private_data.s_build_code_lengths.v_node;
++    v_repeat_value = self->private_data.s_build_code_lengths.v_repeat_value;
++    v_repeat_n_bits = self->private_data.s_build_code_lengths.v_repeat_n_bits;
++  }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_n_bits < 1u) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_0 = *iop_a_src++;
++        v_c8 = t_0;
++      }
++      self->private_impl.f_bits = ((uint32_t)(v_c8));
++      self->private_impl.f_n_bits = 8u;
+     }
+-    v_filter = a_workbuf.ptr[0u];
+-    a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, 1u);
+-    if (self->private_impl.f_pass_bytes_per_row > ((uint64_t)(a_workbuf.len))) {
+-      return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length);
++    v_use_length = (self->private_impl.f_bits & 1u);
++    self->private_impl.f_bits >>= 1u;
++    self->private_impl.f_n_bits -= 1u;
++    self->private_impl.f_ht_code_lengths_remaining = self->private_impl.f_ht_n_symbols;
++    if (v_use_length != 0u) {
++      if (self->private_impl.f_n_bits < 3u) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_1 = *iop_a_src++;
++          v_c8 = t_1;
++        }
++        if (self->private_impl.f_n_bits >= 3u) {
++          status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
++          goto exit;
++        }
++        self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
++        self->private_impl.f_n_bits += 8u;
++      }
++      v_length_n_bits = (((self->private_impl.f_bits & 7u) * 2u) + 2u);
++      self->private_impl.f_bits >>= 3u;
++      self->private_impl.f_n_bits -= 3u;
++      while (self->private_impl.f_n_bits < v_length_n_bits) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_2 = *iop_a_src++;
++          v_c8 = t_2;
++        }
++        if (self->private_impl.f_n_bits >= v_length_n_bits) {
++          status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
++          goto exit;
++        }
++        self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
++        self->private_impl.f_n_bits += 8u;
++      }
++      v_length = ((self->private_impl.f_bits & ((((uint32_t)(1u)) << v_length_n_bits) - 1u)) + 2u);
++      self->private_impl.f_bits >>= v_length_n_bits;
++      self->private_impl.f_n_bits -= v_length_n_bits;
++      if (v_length > self->private_impl.f_ht_n_symbols) {
++        status = wuffs_base__make_status(wuffs_webp__error__bad_huffman_code);
++        goto exit;
++      }
++      self->private_impl.f_ht_code_lengths_remaining = v_length;
+     }
+-    v_curr_row = wuffs_base__slice_u8__subslice_j(a_workbuf, self->private_impl.f_pass_bytes_per_row);
+-    a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, self->private_impl.f_pass_bytes_per_row);
+-    if (v_filter == 0u) {
+-    } else if (v_filter == 1u) {
+-      wuffs_png__decoder__filter_1(self, v_curr_row);
+-    } else if (v_filter == 2u) {
+-      wuffs_png__decoder__filter_2(self, v_curr_row, v_prev_row);
+-    } else if (v_filter == 3u) {
+-      wuffs_png__decoder__filter_3(self, v_curr_row, v_prev_row);
+-    } else if (v_filter == 4u) {
+-      wuffs_png__decoder__filter_4(self, v_curr_row, v_prev_row);
+-    } else {
+-      return wuffs_base__make_status(wuffs_png__error__bad_filter);
++    v_prev_code_length = 8u;
++    while (v_s < self->private_impl.f_ht_n_symbols) {
++      if (self->private_impl.f_ht_code_lengths_remaining <= 0u) {
++        while (v_s < self->private_impl.f_ht_n_symbols) {
++          self->private_data.f_code_lengths[v_s] = 0u;
++          v_s += 1u;
++        }
++        break;
++      }
++      self->private_impl.f_ht_code_lengths_remaining -= 1u;
++      v_h = 0u;
++      while (true) {
++        v_node = self->private_data.f_code_lengths_huffman_nodes[v_h];
++        if (v_node >= 32768u) {
++          break;
++        } else if (v_node > 35u) {
++          status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_huffman_code);
++          goto exit;
++        }
++        if (self->private_impl.f_n_bits < 1u) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint8_t t_3 = *iop_a_src++;
++            v_c8 = t_3;
++          }
++          self->private_impl.f_bits = ((uint32_t)(v_c8));
++          self->private_impl.f_n_bits = 8u;
++        }
++        v_h = (((uint32_t)(v_node)) + (self->private_impl.f_bits & 1u));
++        self->private_impl.f_bits >>= 1u;
++        self->private_impl.f_n_bits -= 1u;
++      }
++      v_symbol = ((uint32_t)(((uint16_t)(v_node & 32767u))));
++      if (v_symbol == 0u) {
++        self->private_data.f_code_lengths[v_s] = 0u;
++        v_s += 1u;
++        continue;
++      } else if (v_symbol < 16u) {
++        v_prev_code_length = ((uint16_t)(v_symbol));
++        self->private_data.f_code_lengths[v_s] = v_prev_code_length;
++        v_s += 1u;
++        continue;
++      } else if (v_symbol == 16u) {
++        v_repeat_value = v_prev_code_length;
++      } else {
++        v_repeat_value = 0u;
++      }
++      v_repeat_n_bits = ((uint32_t)(WUFFS_WEBP__REPEAT_N_BITS[(v_symbol & 3u)]));
++      v_s_max = ((uint32_t)(((uint32_t)(WUFFS_WEBP__REPEAT_COUNTS[(v_symbol & 3u)])) + v_s));
++      if (self->private_impl.f_n_bits < v_repeat_n_bits) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_4 = *iop_a_src++;
++          v_c8 = t_4;
++        }
++        if (self->private_impl.f_n_bits >= v_repeat_n_bits) {
++          status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
++          goto exit;
++        }
++        self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
++        self->private_impl.f_n_bits += 8u;
++      }
++      v_s_max += (self->private_impl.f_bits & ((((uint32_t)(1u)) << v_repeat_n_bits) - 1u));
++      self->private_impl.f_bits >>= v_repeat_n_bits;
++      self->private_impl.f_n_bits -= v_repeat_n_bits;
++      if (v_s_max > self->private_impl.f_ht_n_symbols) {
++        status = wuffs_base__make_status(wuffs_webp__error__bad_huffman_code);
++        goto exit;
++      }
++      while (v_s < v_s_max) {
++        self->private_data.f_code_lengths[v_s] = v_repeat_value;
++        v_s += 1u;
++      }
+     }
+-    wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, v_curr_row);
+-    v_prev_row = v_curr_row;
+-    v_y += 1u;
++
++    goto ok;
++    ok:
++    self->private_impl.p_build_code_lengths = 0;
++    goto exit;
+   }
+-  return wuffs_base__make_status(NULL);
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_build_code_lengths = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_build_code_lengths.v_length_n_bits = v_length_n_bits;
++  self->private_data.s_build_code_lengths.v_prev_code_length = v_prev_code_length;
++  self->private_data.s_build_code_lengths.v_s = v_s;
++  self->private_data.s_build_code_lengths.v_s_max = v_s_max;
++  self->private_data.s_build_code_lengths.v_node = v_node;
++  self->private_data.s_build_code_lengths.v_repeat_value = v_repeat_value;
++  self->private_data.s_build_code_lengths.v_repeat_n_bits = v_repeat_n_bits;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
+ }
+ 
+-// -------- func png.decoder.filter_and_swizzle_tricky
++// -------- func webp.decoder.decode_pixels_slow
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_png__decoder__filter_and_swizzle_tricky(
+-    wuffs_png__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__slice_u8 a_workbuf) {
+-  wuffs_base__pixel_format v_dst_pixfmt = {0};
+-  uint32_t v_dst_bits_per_pixel = 0;
+-  uint64_t v_dst_bytes_per_pixel = 0;
+-  uint64_t v_dst_bytes_per_row1 = 0;
+-  wuffs_base__slice_u8 v_dst_palette = {0};
+-  wuffs_base__table_u8 v_tab = {0};
+-  uint64_t v_src_bytes_per_pixel = 0;
++wuffs_webp__decoder__decode_pixels_slow(
++    wuffs_webp__decoder* self,
++    wuffs_base__slice_u8 a_dst,
++    wuffs_base__io_buffer* a_src,
++    uint32_t a_width,
++    uint32_t a_height,
++    wuffs_base__slice_u8 a_tile_data,
++    uint32_t a_tile_size_log2) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_c8 = 0;
++  uint64_t v_p = 0;
++  uint64_t v_p_max = 0;
++  uint32_t v_tile_size_log2 = 0;
++  uint32_t v_width_in_tiles = 0;
+   uint32_t v_x = 0;
+   uint32_t v_y = 0;
+-  uint64_t v_i = 0;
+-  wuffs_base__slice_u8 v_dst = {0};
+-  uint8_t v_filter = 0;
+-  wuffs_base__slice_u8 v_s = {0};
+-  wuffs_base__slice_u8 v_curr_row = {0};
+-  wuffs_base__slice_u8 v_prev_row = {0};
+-  uint8_t v_bits_unpacked[8] = {0};
+-  uint8_t v_bits_packed = 0;
+-  uint8_t v_packs_remaining = 0;
+-  uint8_t v_multiplier = 0;
+-  uint8_t v_shift = 0;
++  uint32_t v_i = 0;
++  uint32_t v_hg = 0;
++  uint32_t v_h = 0;
++  uint16_t v_node = 0;
++  uint32_t v_pixel_g = 0;
++  uint32_t v_color = 0;
++  wuffs_base__slice_u8 v_dst_pixel = {0};
++  uint32_t v_back_ref_len_n_bits = 0;
++  uint32_t v_back_ref_len_minus_1 = 0;
++  uint32_t v_back_ref_dist_n_bits = 0;
++  uint32_t v_back_ref_dist_sym = 0;
++  uint32_t v_back_ref_dist_premap_minus_1 = 0;
++  uint32_t v_back_ref_dist_minus_1 = 0;
++  uint32_t v_dm = 0;
++  uint32_t v_dx = 0;
++  uint32_t v_dy = 0;
++  uint64_t v_p_end = 0;
++  uint64_t v_dist4 = 0;
++  uint64_t v_q = 0;
++  wuffs_base__slice_u8 v_color_cache_pixels = {0};
++  uint64_t v_color_cache_p = 0;
++  uint32_t v_color_cache_shift = 0;
+ 
+-  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
+-  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
+-  if ((v_dst_bits_per_pixel & 7u) != 0u) {
+-    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
+-  }
+-  v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8u)));
+-  v_dst_bytes_per_row1 = (((uint64_t)(self->private_impl.f_frame_rect_x1)) * v_dst_bytes_per_pixel);
+-  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024));
+-  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
+-  v_src_bytes_per_pixel = 1u;
+-  if (self->private_impl.f_depth >= 8u) {
+-    v_src_bytes_per_pixel = (((uint64_t)(WUFFS_PNG__NUM_CHANNELS[self->private_impl.f_color_type])) * ((uint64_t)((self->private_impl.f_depth >> 3u))));
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+-  if (self->private_impl.f_chunk_type_array[0u] == 73u) {
+-    v_y = ((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][5u]));
+-  } else {
+-    v_y = self->private_impl.f_frame_rect_y0;
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_pixels_slow;
++  if (coro_susp_point) {
++    v_p = self->private_data.s_decode_pixels_slow.v_p;
++    v_p_max = self->private_data.s_decode_pixels_slow.v_p_max;
++    v_tile_size_log2 = self->private_data.s_decode_pixels_slow.v_tile_size_log2;
++    v_width_in_tiles = self->private_data.s_decode_pixels_slow.v_width_in_tiles;
++    v_x = self->private_data.s_decode_pixels_slow.v_x;
++    v_y = self->private_data.s_decode_pixels_slow.v_y;
++    v_hg = self->private_data.s_decode_pixels_slow.v_hg;
++    v_node = self->private_data.s_decode_pixels_slow.v_node;
++    v_color = self->private_data.s_decode_pixels_slow.v_color;
++    v_back_ref_len_n_bits = self->private_data.s_decode_pixels_slow.v_back_ref_len_n_bits;
++    v_back_ref_len_minus_1 = self->private_data.s_decode_pixels_slow.v_back_ref_len_minus_1;
++    v_back_ref_dist_n_bits = self->private_data.s_decode_pixels_slow.v_back_ref_dist_n_bits;
++    v_back_ref_dist_premap_minus_1 = self->private_data.s_decode_pixels_slow.v_back_ref_dist_premap_minus_1;
++    v_color_cache_p = self->private_data.s_decode_pixels_slow.v_color_cache_p;
+   }
+-  while (v_y < self->private_impl.f_frame_rect_y1) {
+-    v_dst = wuffs_base__table_u8__row_u32(v_tab, v_y);
+-    if (v_dst_bytes_per_row1 < ((uint64_t)(v_dst.len))) {
+-      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row1);
+-    }
+-    if (1u > ((uint64_t)(a_workbuf.len))) {
+-      return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length);
+-    }
+-    v_filter = a_workbuf.ptr[0u];
+-    a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, 1u);
+-    if (self->private_impl.f_pass_bytes_per_row > ((uint64_t)(a_workbuf.len))) {
+-      return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length);
+-    }
+-    v_curr_row = wuffs_base__slice_u8__subslice_j(a_workbuf, self->private_impl.f_pass_bytes_per_row);
+-    a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, self->private_impl.f_pass_bytes_per_row);
+-    if (v_filter == 0u) {
+-    } else if (v_filter == 1u) {
+-      wuffs_png__decoder__filter_1(self, v_curr_row);
+-    } else if (v_filter == 2u) {
+-      wuffs_png__decoder__filter_2(self, v_curr_row, v_prev_row);
+-    } else if (v_filter == 3u) {
+-      wuffs_png__decoder__filter_3(self, v_curr_row, v_prev_row);
+-    } else if (v_filter == 4u) {
+-      wuffs_png__decoder__filter_4(self, v_curr_row, v_prev_row);
+-    } else {
+-      return wuffs_base__make_status(wuffs_png__error__bad_filter);
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    v_p_max = ((uint64_t)((4u * a_width * a_height)));
++    if (((uint64_t)(a_dst.len)) < v_p_max) {
++      status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_dst_buffer);
++      goto exit;
+     }
+-    v_s = v_curr_row;
+-    if (self->private_impl.f_chunk_type_array[0u] == 73u) {
+-      v_x = ((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][2u]));
++    if (a_tile_size_log2 != 0u) {
++      v_tile_size_log2 = a_tile_size_log2;
++      v_width_in_tiles = ((a_width + ((((uint32_t)(1u)) << v_tile_size_log2) - 1u)) >> v_tile_size_log2);
+     } else {
+-      v_x = self->private_impl.f_frame_rect_x0;
++      v_tile_size_log2 = 31u;
++      v_width_in_tiles = 1u;
+     }
+-    if (self->private_impl.f_depth == 8u) {
+-      while (v_x < self->private_impl.f_frame_rect_x1) {
+-        v_i = (((uint64_t)(v_x)) * v_dst_bytes_per_pixel);
+-        if (v_i <= ((uint64_t)(v_dst.len))) {
+-          if (self->private_impl.f_color_type == 4u) {
+-            if (2u <= ((uint64_t)(v_s.len))) {
+-              v_bits_unpacked[0u] = v_s.ptr[0u];
+-              v_bits_unpacked[1u] = v_s.ptr[0u];
+-              v_bits_unpacked[2u] = v_s.ptr[0u];
+-              v_bits_unpacked[3u] = v_s.ptr[1u];
+-              v_s = wuffs_base__slice_u8__subslice_i(v_s, 2u);
+-              wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4));
+-            }
+-          } else if (((uint32_t)(self->private_impl.f_remap_transparency)) != 0u) {
+-            if (self->private_impl.f_color_type == 0u) {
+-              if (1u <= ((uint64_t)(v_s.len))) {
+-                v_bits_unpacked[0u] = v_s.ptr[0u];
+-                v_bits_unpacked[1u] = v_s.ptr[0u];
+-                v_bits_unpacked[2u] = v_s.ptr[0u];
+-                v_bits_unpacked[3u] = 255u;
+-                v_s = wuffs_base__slice_u8__subslice_i(v_s, 1u);
+-                if (((uint32_t)(self->private_impl.f_remap_transparency)) == ((((uint32_t)(v_bits_unpacked[0u])) << 0u) |
+-                    (((uint32_t)(v_bits_unpacked[1u])) << 8u) |
+-                    (((uint32_t)(v_bits_unpacked[2u])) << 16u) |
+-                    (((uint32_t)(v_bits_unpacked[3u])) << 24u))) {
+-                  v_bits_unpacked[0u] = 0u;
+-                  v_bits_unpacked[1u] = 0u;
+-                  v_bits_unpacked[2u] = 0u;
+-                  v_bits_unpacked[3u] = 0u;
+-                }
+-                wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4));
++    while (v_p < v_p_max) {
++      v_i = ((uint32_t)(((uint32_t)(((uint32_t)(((uint32_t)((v_y >> v_tile_size_log2) * v_width_in_tiles)) + (v_x >> v_tile_size_log2))) * 4u)) + 1u));
++      if (((uint64_t)(v_i)) < ((uint64_t)(a_tile_data.len))) {
++        v_hg = ((uint32_t)(a_tile_data.ptr[((uint64_t)(v_i))]));
++      }
++      v_h = ((uint32_t)(WUFFS_WEBP__HUFFMAN_TABLE_BASE_OFFSETS[0u]));
++      while (true) {
++        v_node = self->private_data.f_huffman_nodes[v_hg][v_h];
++        if (v_node >= 32768u) {
++          break;
++        } else if (v_node > 6265u) {
++          status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_huffman_code);
++          goto exit;
++        }
++        if (self->private_impl.f_n_bits < 1u) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint8_t t_0 = *iop_a_src++;
++            v_c8 = t_0;
++          }
++          self->private_impl.f_bits = ((uint32_t)(v_c8));
++          self->private_impl.f_n_bits = 8u;
++        }
++        v_h = (((uint32_t)(v_node)) + (self->private_impl.f_bits & 1u));
++        self->private_impl.f_bits >>= 1u;
++        self->private_impl.f_n_bits -= 1u;
++      }
++      v_pixel_g = ((uint32_t)(((uint16_t)(v_node & 32767u))));
++      if (v_pixel_g < 256u) {
++        v_color = (v_pixel_g << 8u);
++        v_h = ((uint32_t)(WUFFS_WEBP__HUFFMAN_TABLE_BASE_OFFSETS[1u]));
++        while (true) {
++          v_node = self->private_data.f_huffman_nodes[v_hg][v_h];
++          if (v_node >= 32768u) {
++            break;
++          }
++          if (self->private_impl.f_n_bits < 1u) {
++            {
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
+               }
+-            } else {
+-              if (3u <= ((uint64_t)(v_s.len))) {
+-                v_bits_unpacked[0u] = v_s.ptr[2u];
+-                v_bits_unpacked[1u] = v_s.ptr[1u];
+-                v_bits_unpacked[2u] = v_s.ptr[0u];
+-                v_bits_unpacked[3u] = 255u;
+-                v_s = wuffs_base__slice_u8__subslice_i(v_s, 3u);
+-                if (((uint32_t)(self->private_impl.f_remap_transparency)) == ((((uint32_t)(v_bits_unpacked[0u])) << 0u) |
+-                    (((uint32_t)(v_bits_unpacked[1u])) << 8u) |
+-                    (((uint32_t)(v_bits_unpacked[2u])) << 16u) |
+-                    (((uint32_t)(v_bits_unpacked[3u])) << 24u))) {
+-                  v_bits_unpacked[0u] = 0u;
+-                  v_bits_unpacked[1u] = 0u;
+-                  v_bits_unpacked[2u] = 0u;
+-                  v_bits_unpacked[3u] = 0u;
+-                }
+-                wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4));
++              uint8_t t_1 = *iop_a_src++;
++              v_c8 = t_1;
++            }
++            self->private_impl.f_bits = ((uint32_t)(v_c8));
++            self->private_impl.f_n_bits = 8u;
++          }
++          v_h = ((((uint32_t)(v_node)) & 4095u) + (self->private_impl.f_bits & 1u));
++          self->private_impl.f_bits >>= 1u;
++          self->private_impl.f_n_bits -= 1u;
++        }
++        v_color |= (((uint32_t)(((uint16_t)(v_node & 255u)))) << 16u);
++        v_h = ((uint32_t)(WUFFS_WEBP__HUFFMAN_TABLE_BASE_OFFSETS[2u]));
++        while (true) {
++          v_node = self->private_data.f_huffman_nodes[v_hg][v_h];
++          if (v_node >= 32768u) {
++            break;
++          }
++          if (self->private_impl.f_n_bits < 1u) {
++            {
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
+               }
++              uint8_t t_2 = *iop_a_src++;
++              v_c8 = t_2;
+             }
+-          } else if (v_src_bytes_per_pixel <= ((uint64_t)(v_s.len))) {
+-            wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__slice_u8__subslice_j(v_s, v_src_bytes_per_pixel));
+-            v_s = wuffs_base__slice_u8__subslice_i(v_s, v_src_bytes_per_pixel);
++            self->private_impl.f_bits = ((uint32_t)(v_c8));
++            self->private_impl.f_n_bits = 8u;
+           }
++          v_h = ((((uint32_t)(v_node)) & 4095u) + (self->private_impl.f_bits & 1u));
++          self->private_impl.f_bits >>= 1u;
++          self->private_impl.f_n_bits -= 1u;
+         }
+-        v_x += (((uint32_t)(1u)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0u]);
+-      }
+-    } else if (self->private_impl.f_depth < 8u) {
+-      v_multiplier = 1u;
+-      if (self->private_impl.f_color_type == 0u) {
+-        v_multiplier = WUFFS_PNG__LOW_BIT_DEPTH_MULTIPLIERS[self->private_impl.f_depth];
+-      }
+-      v_shift = ((8u - self->private_impl.f_depth) & 7u);
+-      v_packs_remaining = 0u;
+-      while (v_x < self->private_impl.f_frame_rect_x1) {
+-        v_i = (((uint64_t)(v_x)) * v_dst_bytes_per_pixel);
+-        if (v_i <= ((uint64_t)(v_dst.len))) {
+-          if ((v_packs_remaining == 0u) && (1u <= ((uint64_t)(v_s.len)))) {
+-            v_packs_remaining = WUFFS_PNG__LOW_BIT_DEPTH_NUM_PACKS[self->private_impl.f_depth];
+-            v_bits_packed = v_s.ptr[0u];
+-            v_s = wuffs_base__slice_u8__subslice_i(v_s, 1u);
++        v_color |= (((uint32_t)(((uint16_t)(v_node & 255u)))) << 0u);
++        v_h = ((uint32_t)(WUFFS_WEBP__HUFFMAN_TABLE_BASE_OFFSETS[3u]));
++        while (true) {
++          v_node = self->private_data.f_huffman_nodes[v_hg][v_h];
++          if (v_node >= 32768u) {
++            break;
+           }
+-          v_bits_unpacked[0u] = ((uint8_t)((v_bits_packed >> v_shift) * v_multiplier));
+-          v_bits_packed = ((uint8_t)(v_bits_packed << self->private_impl.f_depth));
+-          v_packs_remaining = ((uint8_t)(v_packs_remaining - 1u));
+-          if (((uint32_t)(self->private_impl.f_remap_transparency)) != 0u) {
+-            v_bits_unpacked[1u] = v_bits_unpacked[0u];
+-            v_bits_unpacked[2u] = v_bits_unpacked[0u];
+-            v_bits_unpacked[3u] = 255u;
+-            if (((uint32_t)(self->private_impl.f_remap_transparency)) == ((((uint32_t)(v_bits_unpacked[0u])) << 0u) |
+-                (((uint32_t)(v_bits_unpacked[1u])) << 8u) |
+-                (((uint32_t)(v_bits_unpacked[2u])) << 16u) |
+-                (((uint32_t)(v_bits_unpacked[3u])) << 24u))) {
+-              v_bits_unpacked[0u] = 0u;
+-              v_bits_unpacked[1u] = 0u;
+-              v_bits_unpacked[2u] = 0u;
+-              v_bits_unpacked[3u] = 0u;
++          if (self->private_impl.f_n_bits < 1u) {
++            {
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint8_t t_3 = *iop_a_src++;
++              v_c8 = t_3;
+             }
+-            wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4));
+-          } else {
+-            wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 1));
++            self->private_impl.f_bits = ((uint32_t)(v_c8));
++            self->private_impl.f_n_bits = 8u;
+           }
++          v_h = ((((uint32_t)(v_node)) & 4095u) + (self->private_impl.f_bits & 1u));
++          self->private_impl.f_bits >>= 1u;
++          self->private_impl.f_n_bits -= 1u;
+         }
+-        v_x += (((uint32_t)(1u)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0u]);
+-      }
+-    } else {
+-      while (v_x < self->private_impl.f_frame_rect_x1) {
+-        v_i = (((uint64_t)(v_x)) * v_dst_bytes_per_pixel);
+-        if (v_i <= ((uint64_t)(v_dst.len))) {
+-          if (self->private_impl.f_color_type == 0u) {
+-            if (2u <= ((uint64_t)(v_s.len))) {
+-              v_bits_unpacked[0u] = v_s.ptr[1u];
+-              v_bits_unpacked[1u] = v_s.ptr[0u];
+-              v_bits_unpacked[2u] = v_s.ptr[1u];
+-              v_bits_unpacked[3u] = v_s.ptr[0u];
+-              v_bits_unpacked[4u] = v_s.ptr[1u];
+-              v_bits_unpacked[5u] = v_s.ptr[0u];
+-              v_bits_unpacked[6u] = 255u;
+-              v_bits_unpacked[7u] = 255u;
+-              v_s = wuffs_base__slice_u8__subslice_i(v_s, 2u);
+-              if (self->private_impl.f_remap_transparency == ((((uint64_t)(v_bits_unpacked[0u])) << 0u) |
+-                  (((uint64_t)(v_bits_unpacked[1u])) << 8u) |
+-                  (((uint64_t)(v_bits_unpacked[2u])) << 16u) |
+-                  (((uint64_t)(v_bits_unpacked[3u])) << 24u) |
+-                  (((uint64_t)(v_bits_unpacked[4u])) << 32u) |
+-                  (((uint64_t)(v_bits_unpacked[5u])) << 40u) |
+-                  (((uint64_t)(v_bits_unpacked[6u])) << 48u) |
+-                  (((uint64_t)(v_bits_unpacked[7u])) << 56u))) {
+-                v_bits_unpacked[0u] = 0u;
+-                v_bits_unpacked[1u] = 0u;
+-                v_bits_unpacked[2u] = 0u;
+-                v_bits_unpacked[3u] = 0u;
+-                v_bits_unpacked[4u] = 0u;
+-                v_bits_unpacked[5u] = 0u;
+-                v_bits_unpacked[6u] = 0u;
+-                v_bits_unpacked[7u] = 0u;
++        v_color |= (((uint32_t)(((uint16_t)(v_node & 255u)))) << 24u);
++      } else if (v_pixel_g < 280u) {
++        if (v_pixel_g < 260u) {
++          v_back_ref_len_minus_1 = (v_pixel_g - 256u);
++        } else {
++          v_back_ref_len_n_bits = ((v_pixel_g - 258u) >> 1u);
++          v_back_ref_len_minus_1 = ((((uint32_t)(2u)) + (v_pixel_g & 1u)) << v_back_ref_len_n_bits);
++          while (self->private_impl.f_n_bits < v_back_ref_len_n_bits) {
++            {
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
+               }
++              uint8_t t_4 = *iop_a_src++;
++              v_c8 = t_4;
+             }
+-          } else if (self->private_impl.f_color_type == 2u) {
+-            if (6u <= ((uint64_t)(v_s.len))) {
+-              v_bits_unpacked[0u] = v_s.ptr[5u];
+-              v_bits_unpacked[1u] = v_s.ptr[4u];
+-              v_bits_unpacked[2u] = v_s.ptr[3u];
+-              v_bits_unpacked[3u] = v_s.ptr[2u];
+-              v_bits_unpacked[4u] = v_s.ptr[1u];
+-              v_bits_unpacked[5u] = v_s.ptr[0u];
+-              v_bits_unpacked[6u] = 255u;
+-              v_bits_unpacked[7u] = 255u;
+-              v_s = wuffs_base__slice_u8__subslice_i(v_s, 6u);
+-              if (self->private_impl.f_remap_transparency == ((((uint64_t)(v_bits_unpacked[0u])) << 0u) |
+-                  (((uint64_t)(v_bits_unpacked[1u])) << 8u) |
+-                  (((uint64_t)(v_bits_unpacked[2u])) << 16u) |
+-                  (((uint64_t)(v_bits_unpacked[3u])) << 24u) |
+-                  (((uint64_t)(v_bits_unpacked[4u])) << 32u) |
+-                  (((uint64_t)(v_bits_unpacked[5u])) << 40u) |
+-                  (((uint64_t)(v_bits_unpacked[6u])) << 48u) |
+-                  (((uint64_t)(v_bits_unpacked[7u])) << 56u))) {
+-                v_bits_unpacked[0u] = 0u;
+-                v_bits_unpacked[1u] = 0u;
+-                v_bits_unpacked[2u] = 0u;
+-                v_bits_unpacked[3u] = 0u;
+-                v_bits_unpacked[4u] = 0u;
+-                v_bits_unpacked[5u] = 0u;
+-                v_bits_unpacked[6u] = 0u;
+-                v_bits_unpacked[7u] = 0u;
++            if (self->private_impl.f_n_bits >= v_back_ref_len_n_bits) {
++              status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
++              goto exit;
++            }
++            self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
++            self->private_impl.f_n_bits += 8u;
++          }
++          v_back_ref_len_minus_1 += (self->private_impl.f_bits & ((((uint32_t)(1u)) << v_back_ref_len_n_bits) - 1u));
++          self->private_impl.f_bits >>= v_back_ref_len_n_bits;
++          self->private_impl.f_n_bits -= v_back_ref_len_n_bits;
++        }
++        v_h = ((uint32_t)(WUFFS_WEBP__HUFFMAN_TABLE_BASE_OFFSETS[4u]));
++        while (true) {
++          v_node = self->private_data.f_huffman_nodes[v_hg][v_h];
++          if (v_node >= 32768u) {
++            break;
++          }
++          if (self->private_impl.f_n_bits < 1u) {
++            {
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
+               }
++              uint8_t t_5 = *iop_a_src++;
++              v_c8 = t_5;
+             }
+-          } else if (self->private_impl.f_color_type == 4u) {
+-            if (4u <= ((uint64_t)(v_s.len))) {
+-              v_bits_unpacked[0u] = v_s.ptr[1u];
+-              v_bits_unpacked[1u] = v_s.ptr[0u];
+-              v_bits_unpacked[2u] = v_s.ptr[1u];
+-              v_bits_unpacked[3u] = v_s.ptr[0u];
+-              v_bits_unpacked[4u] = v_s.ptr[1u];
+-              v_bits_unpacked[5u] = v_s.ptr[0u];
+-              v_bits_unpacked[6u] = v_s.ptr[3u];
+-              v_bits_unpacked[7u] = v_s.ptr[2u];
+-              v_s = wuffs_base__slice_u8__subslice_i(v_s, 4u);
++            self->private_impl.f_bits = ((uint32_t)(v_c8));
++            self->private_impl.f_n_bits = 8u;
++          }
++          v_h = ((((uint32_t)(v_node)) & 4095u) + (self->private_impl.f_bits & 1u));
++          self->private_impl.f_bits >>= 1u;
++          self->private_impl.f_n_bits -= 1u;
++        }
++        v_back_ref_dist_sym = ((uint32_t)(((uint16_t)(v_node & 32767u))));
++        if (v_back_ref_dist_sym < 4u) {
++          v_back_ref_dist_premap_minus_1 = v_back_ref_dist_sym;
++        } else if (v_back_ref_dist_sym < 40u) {
++          v_back_ref_dist_n_bits = ((v_back_ref_dist_sym - 2u) >> 1u);
++          v_back_ref_dist_premap_minus_1 = ((((uint32_t)(2u)) + (v_back_ref_dist_sym & 1u)) << v_back_ref_dist_n_bits);
++          while (self->private_impl.f_n_bits < v_back_ref_dist_n_bits) {
++            {
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint8_t t_6 = *iop_a_src++;
++              v_c8 = t_6;
+             }
+-          } else {
+-            if (8u <= ((uint64_t)(v_s.len))) {
+-              v_bits_unpacked[0u] = v_s.ptr[5u];
+-              v_bits_unpacked[1u] = v_s.ptr[4u];
+-              v_bits_unpacked[2u] = v_s.ptr[3u];
+-              v_bits_unpacked[3u] = v_s.ptr[2u];
+-              v_bits_unpacked[4u] = v_s.ptr[1u];
+-              v_bits_unpacked[5u] = v_s.ptr[0u];
+-              v_bits_unpacked[6u] = v_s.ptr[7u];
+-              v_bits_unpacked[7u] = v_s.ptr[6u];
+-              v_s = wuffs_base__slice_u8__subslice_i(v_s, 8u);
++            if (self->private_impl.f_n_bits >= v_back_ref_dist_n_bits) {
++              status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
++              goto exit;
+             }
++            self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
++            self->private_impl.f_n_bits += 8u;
+           }
+-          wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 8));
++          v_back_ref_dist_premap_minus_1 += (self->private_impl.f_bits & ((((uint32_t)(1u)) << v_back_ref_dist_n_bits) - 1u));
++          self->private_impl.f_bits >>= v_back_ref_dist_n_bits;
++          self->private_impl.f_n_bits -= v_back_ref_dist_n_bits;
+         }
+-        v_x += (((uint32_t)(1u)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0u]);
++        if (v_back_ref_dist_premap_minus_1 >= 120u) {
++          v_back_ref_dist_minus_1 = (v_back_ref_dist_premap_minus_1 - 120u);
++        } else {
++          v_dm = ((uint32_t)(WUFFS_WEBP__DISTANCE_MAP[v_back_ref_dist_premap_minus_1]));
++          v_dy = (v_dm >> 4u);
++          v_dx = ((uint32_t)(7u - (v_dm & 15u)));
++          v_back_ref_dist_minus_1 = ((uint32_t)((a_width * v_dy) + v_dx));
++        }
++        v_p_end = (v_p + ((uint64_t)(((v_back_ref_len_minus_1 + 1u) * 4u))));
++        v_dist4 = ((((uint64_t)(v_back_ref_dist_minus_1)) * 4u) + 4u);
++        if ((v_p_end > v_p_max) || (v_p_end > ((uint64_t)(a_dst.len))) || (v_p < v_dist4)) {
++          status = wuffs_base__make_status(wuffs_webp__error__bad_back_reference);
++          goto exit;
++        }
++        v_q = (v_p - v_dist4);
++        while ((v_q < v_p) && (v_p < v_p_end)) {
++          a_dst.ptr[v_p] = a_dst.ptr[v_q];
++          v_p += 1u;
++          v_q += 1u;
++        }
++        v_x += (v_back_ref_len_minus_1 + 1u);
++        while (v_x >= a_width) {
++          v_x -= a_width;
++          v_y += 1u;
++        }
++        continue;
++      } else {
++        if ((v_color_cache_p > v_p) || (v_p > ((uint64_t)(a_dst.len)))) {
++          status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_dst_buffer);
++          goto exit;
++        }
++        v_color_cache_pixels = wuffs_base__slice_u8__subslice_ij(a_dst, v_color_cache_p, v_p);
++        v_color_cache_p = v_p;
++        v_color_cache_shift = ((32u - self->private_impl.f_color_cache_bits) & 31u);
++        while (((uint64_t)(v_color_cache_pixels.len)) >= 4u) {
++          v_color = wuffs_base__peek_u32le__no_bounds_check(v_color_cache_pixels.ptr);
++          self->private_data.f_color_cache[((((uint32_t)(v_color * 506832829u)) >> v_color_cache_shift) & 2047u)] = v_color;
++          v_color_cache_pixels = wuffs_base__slice_u8__subslice_i(v_color_cache_pixels, 4u);
++        }
++        v_color = self->private_data.f_color_cache[((v_pixel_g - 280u) & 2047u)];
++      }
++      if (v_p > ((uint64_t)(a_dst.len))) {
++        status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_dst_buffer);
++        goto exit;
++      }
++      v_dst_pixel = wuffs_base__slice_u8__subslice_i(a_dst, v_p);
++      if (((uint64_t)(v_dst_pixel.len)) < 4u) {
++        status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_dst_buffer);
++        goto exit;
++      }
++      wuffs_base__poke_u32le__no_bounds_check(v_dst_pixel.ptr, v_color);
++      v_p += 4u;
++      v_x += 1u;
++      if (v_x == a_width) {
++        v_x = 0u;
++        v_y += 1u;
+       }
+     }
+-    v_prev_row = v_curr_row;
+-    v_y += (((uint32_t)(1u)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][3u]);
+-  }
+-  return wuffs_base__make_status(NULL);
+-}
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG)
++    goto ok;
++    ok:
++    self->private_impl.p_decode_pixels_slow = 0;
++    goto exit;
++  }
+ 
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA)
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_pixels_slow = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_pixels_slow.v_p = v_p;
++  self->private_data.s_decode_pixels_slow.v_p_max = v_p_max;
++  self->private_data.s_decode_pixels_slow.v_tile_size_log2 = v_tile_size_log2;
++  self->private_data.s_decode_pixels_slow.v_width_in_tiles = v_width_in_tiles;
++  self->private_data.s_decode_pixels_slow.v_x = v_x;
++  self->private_data.s_decode_pixels_slow.v_y = v_y;
++  self->private_data.s_decode_pixels_slow.v_hg = v_hg;
++  self->private_data.s_decode_pixels_slow.v_node = v_node;
++  self->private_data.s_decode_pixels_slow.v_color = v_color;
++  self->private_data.s_decode_pixels_slow.v_back_ref_len_n_bits = v_back_ref_len_n_bits;
++  self->private_data.s_decode_pixels_slow.v_back_ref_len_minus_1 = v_back_ref_len_minus_1;
++  self->private_data.s_decode_pixels_slow.v_back_ref_dist_n_bits = v_back_ref_dist_n_bits;
++  self->private_data.s_decode_pixels_slow.v_back_ref_dist_premap_minus_1 = v_back_ref_dist_premap_minus_1;
++  self->private_data.s_decode_pixels_slow.v_color_cache_p = v_color_cache_p;
+ 
+-// ---------------- Status Codes Implementations
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
+ 
+-const char wuffs_tga__error__bad_header[] = "#tga: bad header";
+-const char wuffs_tga__error__bad_run_length_encoding[] = "#tga: bad run length encoding";
+-const char wuffs_tga__error__truncated_input[] = "#tga: truncated input";
+-const char wuffs_tga__error__unsupported_tga_file[] = "#tga: unsupported TGA file";
++  return status;
++}
+ 
+-// ---------------- Private Consts
++// -------- func webp.decoder.apply_transform_predictor
+ 
+-// ---------------- Private Initializer Prototypes
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_webp__decoder__apply_transform_predictor(
++    wuffs_webp__decoder* self,
++    wuffs_base__slice_u8 a_pix,
++    wuffs_base__slice_u8 a_tile_data) {
++  uint64_t v_w4 = 0;
++  wuffs_base__slice_u8 v_prev_row = {0};
++  wuffs_base__slice_u8 v_curr_row = {0};
++  uint32_t v_tile_size_log2 = 0;
++  uint32_t v_tiles_per_row = 0;
++  uint32_t v_mask = 0;
++  uint32_t v_y = 0;
++  uint32_t v_x = 0;
++  uint64_t v_t = 0;
++  wuffs_base__slice_u8 v_tile_data = {0};
++  uint8_t v_mode = 0;
++  uint32_t v_l0 = 0;
++  uint32_t v_l1 = 0;
++  uint32_t v_l2 = 0;
++  uint32_t v_l3 = 0;
++  uint32_t v_c0 = 0;
++  uint32_t v_c1 = 0;
++  uint32_t v_c2 = 0;
++  uint32_t v_c3 = 0;
++  uint32_t v_t0 = 0;
++  uint32_t v_t1 = 0;
++  uint32_t v_t2 = 0;
++  uint32_t v_t3 = 0;
++  uint32_t v_sum_l = 0;
++  uint32_t v_sum_t = 0;
++
++  if ((self->private_impl.f_width <= 0u) || (self->private_impl.f_height <= 0u)) {
++    return wuffs_base__make_empty_struct();
++  }
++  v_w4 = ((uint64_t)((self->private_impl.f_width * 4u)));
++  v_curr_row = wuffs_base__utility__empty_slice_u8();
++  if (v_w4 <= ((uint64_t)(a_pix.len))) {
++    v_curr_row = wuffs_base__slice_u8__subslice_j(a_pix, v_w4);
++  }
++  if (((uint64_t)(v_curr_row.len)) >= 4u) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++    v_curr_row.ptr[3u] += 255u;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++  }
++  while (((uint64_t)(v_curr_row.len)) >= 8u) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++    v_curr_row.ptr[4u] += v_curr_row.ptr[0u];
++    v_curr_row.ptr[5u] += v_curr_row.ptr[1u];
++    v_curr_row.ptr[6u] += v_curr_row.ptr[2u];
++    v_curr_row.ptr[7u] += v_curr_row.ptr[3u];
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++    v_curr_row = wuffs_base__slice_u8__subslice_i(v_curr_row, 4u);
++  }
++  v_tile_size_log2 = ((uint32_t)(self->private_impl.f_transform_tile_size_log2[0u]));
++  v_tiles_per_row = ((self->private_impl.f_width + ((((uint32_t)(1u)) << v_tile_size_log2) - 1u)) >> v_tile_size_log2);
++  v_mask = ((((uint32_t)(1u)) << v_tile_size_log2) - 1u);
++  v_y = 1u;
++  while (v_y < self->private_impl.f_height) {
++    v_t = ((uint64_t)((4u * (v_y >> v_tile_size_log2) * v_tiles_per_row)));
++    v_tile_data = wuffs_base__utility__empty_slice_u8();
++    if (v_t <= ((uint64_t)(a_tile_data.len))) {
++      v_tile_data = wuffs_base__slice_u8__subslice_i(a_tile_data, v_t);
++      if (((uint64_t)(v_tile_data.len)) >= 4u) {
++        v_mode = ((uint8_t)(v_tile_data.ptr[1u] & 15u));
++        v_tile_data = wuffs_base__slice_u8__subslice_i(v_tile_data, 4u);
++      }
++    }
++    if (v_w4 <= ((uint64_t)(a_pix.len))) {
++      v_prev_row = a_pix;
++      a_pix = wuffs_base__slice_u8__subslice_i(a_pix, v_w4);
++      v_curr_row = a_pix;
++    }
++    if ((((uint64_t)(v_prev_row.len)) >= 4u) && (((uint64_t)(v_curr_row.len)) >= 4u)) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++      v_curr_row.ptr[0u] += v_prev_row.ptr[0u];
++      v_curr_row.ptr[1u] += v_prev_row.ptr[1u];
++      v_curr_row.ptr[2u] += v_prev_row.ptr[2u];
++      v_curr_row.ptr[3u] += v_prev_row.ptr[3u];
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++    }
++    v_x = 1u;
++    while (v_x < self->private_impl.f_width) {
++      if (((v_x & v_mask) == 0u) && (((uint64_t)(v_tile_data.len)) >= 4u)) {
++        v_mode = ((uint8_t)(v_tile_data.ptr[1u] & 15u));
++        v_tile_data = wuffs_base__slice_u8__subslice_i(v_tile_data, 4u);
++      }
++      if ((((uint64_t)(v_prev_row.len)) < 12u) || (((uint64_t)(v_curr_row.len)) < 8u)) {
++        break;
++      }
++      if (v_mode == 0u) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        v_curr_row.ptr[7u] += 255u;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++      } else if (v_mode == 1u) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        v_curr_row.ptr[4u] += v_curr_row.ptr[0u];
++        v_curr_row.ptr[5u] += v_curr_row.ptr[1u];
++        v_curr_row.ptr[6u] += v_curr_row.ptr[2u];
++        v_curr_row.ptr[7u] += v_curr_row.ptr[3u];
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++      } else if (v_mode == 2u) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        v_curr_row.ptr[4u] += v_prev_row.ptr[4u];
++        v_curr_row.ptr[5u] += v_prev_row.ptr[5u];
++        v_curr_row.ptr[6u] += v_prev_row.ptr[6u];
++        v_curr_row.ptr[7u] += v_prev_row.ptr[7u];
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++      } else if (v_mode == 3u) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        v_curr_row.ptr[4u] += v_prev_row.ptr[8u];
++        v_curr_row.ptr[5u] += v_prev_row.ptr[9u];
++        v_curr_row.ptr[6u] += v_prev_row.ptr[10u];
++        v_curr_row.ptr[7u] += v_prev_row.ptr[11u];
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++      } else if (v_mode == 4u) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        v_curr_row.ptr[4u] += v_prev_row.ptr[0u];
++        v_curr_row.ptr[5u] += v_prev_row.ptr[1u];
++        v_curr_row.ptr[6u] += v_prev_row.ptr[2u];
++        v_curr_row.ptr[7u] += v_prev_row.ptr[3u];
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++      } else if (v_mode == 5u) {
++        v_l0 = ((((uint32_t)(v_curr_row.ptr[0u])) + ((uint32_t)(v_prev_row.ptr[8u]))) / 2u);
++        v_l1 = ((((uint32_t)(v_curr_row.ptr[1u])) + ((uint32_t)(v_prev_row.ptr[9u]))) / 2u);
++        v_l2 = ((((uint32_t)(v_curr_row.ptr[2u])) + ((uint32_t)(v_prev_row.ptr[10u]))) / 2u);
++        v_l3 = ((((uint32_t)(v_curr_row.ptr[3u])) + ((uint32_t)(v_prev_row.ptr[11u]))) / 2u);
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        v_curr_row.ptr[4u] += ((uint8_t)(((v_l0 + ((uint32_t)(v_prev_row.ptr[4u]))) / 2u)));
++        v_curr_row.ptr[5u] += ((uint8_t)(((v_l1 + ((uint32_t)(v_prev_row.ptr[5u]))) / 2u)));
++        v_curr_row.ptr[6u] += ((uint8_t)(((v_l2 + ((uint32_t)(v_prev_row.ptr[6u]))) / 2u)));
++        v_curr_row.ptr[7u] += ((uint8_t)(((v_l3 + ((uint32_t)(v_prev_row.ptr[7u]))) / 2u)));
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++      } else if (v_mode == 6u) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        v_curr_row.ptr[4u] += ((uint8_t)(((((uint32_t)(v_curr_row.ptr[0u])) + ((uint32_t)(v_prev_row.ptr[0u]))) / 2u)));
++        v_curr_row.ptr[5u] += ((uint8_t)(((((uint32_t)(v_curr_row.ptr[1u])) + ((uint32_t)(v_prev_row.ptr[1u]))) / 2u)));
++        v_curr_row.ptr[6u] += ((uint8_t)(((((uint32_t)(v_curr_row.ptr[2u])) + ((uint32_t)(v_prev_row.ptr[2u]))) / 2u)));
++        v_curr_row.ptr[7u] += ((uint8_t)(((((uint32_t)(v_curr_row.ptr[3u])) + ((uint32_t)(v_prev_row.ptr[3u]))) / 2u)));
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++      } else if (v_mode == 7u) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        v_curr_row.ptr[4u] += ((uint8_t)(((((uint32_t)(v_curr_row.ptr[0u])) + ((uint32_t)(v_prev_row.ptr[4u]))) / 2u)));
++        v_curr_row.ptr[5u] += ((uint8_t)(((((uint32_t)(v_curr_row.ptr[1u])) + ((uint32_t)(v_prev_row.ptr[5u]))) / 2u)));
++        v_curr_row.ptr[6u] += ((uint8_t)(((((uint32_t)(v_curr_row.ptr[2u])) + ((uint32_t)(v_prev_row.ptr[6u]))) / 2u)));
++        v_curr_row.ptr[7u] += ((uint8_t)(((((uint32_t)(v_curr_row.ptr[3u])) + ((uint32_t)(v_prev_row.ptr[7u]))) / 2u)));
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++      } else if (v_mode == 8u) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        v_curr_row.ptr[4u] += ((uint8_t)(((((uint32_t)(v_prev_row.ptr[0u])) + ((uint32_t)(v_prev_row.ptr[4u]))) / 2u)));
++        v_curr_row.ptr[5u] += ((uint8_t)(((((uint32_t)(v_prev_row.ptr[1u])) + ((uint32_t)(v_prev_row.ptr[5u]))) / 2u)));
++        v_curr_row.ptr[6u] += ((uint8_t)(((((uint32_t)(v_prev_row.ptr[2u])) + ((uint32_t)(v_prev_row.ptr[6u]))) / 2u)));
++        v_curr_row.ptr[7u] += ((uint8_t)(((((uint32_t)(v_prev_row.ptr[3u])) + ((uint32_t)(v_prev_row.ptr[7u]))) / 2u)));
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++      } else if (v_mode == 9u) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        v_curr_row.ptr[4u] += ((uint8_t)(((((uint32_t)(v_prev_row.ptr[4u])) + ((uint32_t)(v_prev_row.ptr[8u]))) / 2u)));
++        v_curr_row.ptr[5u] += ((uint8_t)(((((uint32_t)(v_prev_row.ptr[5u])) + ((uint32_t)(v_prev_row.ptr[9u]))) / 2u)));
++        v_curr_row.ptr[6u] += ((uint8_t)(((((uint32_t)(v_prev_row.ptr[6u])) + ((uint32_t)(v_prev_row.ptr[10u]))) / 2u)));
++        v_curr_row.ptr[7u] += ((uint8_t)(((((uint32_t)(v_prev_row.ptr[7u])) + ((uint32_t)(v_prev_row.ptr[11u]))) / 2u)));
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++      } else if (v_mode == 10u) {
++        v_l0 = ((((uint32_t)(v_curr_row.ptr[0u])) + ((uint32_t)(v_prev_row.ptr[0u]))) / 2u);
++        v_l1 = ((((uint32_t)(v_curr_row.ptr[1u])) + ((uint32_t)(v_prev_row.ptr[1u]))) / 2u);
++        v_l2 = ((((uint32_t)(v_curr_row.ptr[2u])) + ((uint32_t)(v_prev_row.ptr[2u]))) / 2u);
++        v_l3 = ((((uint32_t)(v_curr_row.ptr[3u])) + ((uint32_t)(v_prev_row.ptr[3u]))) / 2u);
++        v_t0 = ((((uint32_t)(v_prev_row.ptr[4u])) + ((uint32_t)(v_prev_row.ptr[8u]))) / 2u);
++        v_t1 = ((((uint32_t)(v_prev_row.ptr[5u])) + ((uint32_t)(v_prev_row.ptr[9u]))) / 2u);
++        v_t2 = ((((uint32_t)(v_prev_row.ptr[6u])) + ((uint32_t)(v_prev_row.ptr[10u]))) / 2u);
++        v_t3 = ((((uint32_t)(v_prev_row.ptr[7u])) + ((uint32_t)(v_prev_row.ptr[11u]))) / 2u);
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        v_curr_row.ptr[4u] += ((uint8_t)(((v_l0 + v_t0) / 2u)));
++        v_curr_row.ptr[5u] += ((uint8_t)(((v_l1 + v_t1) / 2u)));
++        v_curr_row.ptr[6u] += ((uint8_t)(((v_l2 + v_t2) / 2u)));
++        v_curr_row.ptr[7u] += ((uint8_t)(((v_l3 + v_t3) / 2u)));
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++      } else if (v_mode == 11u) {
++        v_l0 = ((uint32_t)(v_curr_row.ptr[0u]));
++        v_l1 = ((uint32_t)(v_curr_row.ptr[1u]));
++        v_l2 = ((uint32_t)(v_curr_row.ptr[2u]));
++        v_l3 = ((uint32_t)(v_curr_row.ptr[3u]));
++        v_c0 = ((uint32_t)(v_prev_row.ptr[0u]));
++        v_c1 = ((uint32_t)(v_prev_row.ptr[1u]));
++        v_c2 = ((uint32_t)(v_prev_row.ptr[2u]));
++        v_c3 = ((uint32_t)(v_prev_row.ptr[3u]));
++        v_t0 = ((uint32_t)(v_prev_row.ptr[4u]));
++        v_t1 = ((uint32_t)(v_prev_row.ptr[5u]));
++        v_t2 = ((uint32_t)(v_prev_row.ptr[6u]));
++        v_t3 = ((uint32_t)(v_prev_row.ptr[7u]));
++        v_sum_l = (wuffs_webp__decoder__absolute_difference(self, v_c0, v_t0) +
++            wuffs_webp__decoder__absolute_difference(self, v_c1, v_t1) +
++            wuffs_webp__decoder__absolute_difference(self, v_c2, v_t2) +
++            wuffs_webp__decoder__absolute_difference(self, v_c3, v_t3));
++        v_sum_t = (wuffs_webp__decoder__absolute_difference(self, v_c0, v_l0) +
++            wuffs_webp__decoder__absolute_difference(self, v_c1, v_l1) +
++            wuffs_webp__decoder__absolute_difference(self, v_c2, v_l2) +
++            wuffs_webp__decoder__absolute_difference(self, v_c3, v_l3));
++        if (v_sum_l < v_sum_t) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++          v_curr_row.ptr[4u] += ((uint8_t)(v_l0));
++          v_curr_row.ptr[5u] += ((uint8_t)(v_l1));
++          v_curr_row.ptr[6u] += ((uint8_t)(v_l2));
++          v_curr_row.ptr[7u] += ((uint8_t)(v_l3));
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++        } else {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++          v_curr_row.ptr[4u] += ((uint8_t)(v_t0));
++          v_curr_row.ptr[5u] += ((uint8_t)(v_t1));
++          v_curr_row.ptr[6u] += ((uint8_t)(v_t2));
++          v_curr_row.ptr[7u] += ((uint8_t)(v_t3));
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++        }
++      } else if (v_mode == 12u) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        v_curr_row.ptr[4u] += wuffs_webp__decoder__mode12(self, v_curr_row.ptr[0u], v_prev_row.ptr[4u], v_prev_row.ptr[0u]);
++        v_curr_row.ptr[5u] += wuffs_webp__decoder__mode12(self, v_curr_row.ptr[1u], v_prev_row.ptr[5u], v_prev_row.ptr[1u]);
++        v_curr_row.ptr[6u] += wuffs_webp__decoder__mode12(self, v_curr_row.ptr[2u], v_prev_row.ptr[6u], v_prev_row.ptr[2u]);
++        v_curr_row.ptr[7u] += wuffs_webp__decoder__mode12(self, v_curr_row.ptr[3u], v_prev_row.ptr[7u], v_prev_row.ptr[3u]);
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++      } else if (v_mode == 13u) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        v_curr_row.ptr[4u] += wuffs_webp__decoder__mode13(self, v_curr_row.ptr[0u], v_prev_row.ptr[4u], v_prev_row.ptr[0u]);
++        v_curr_row.ptr[5u] += wuffs_webp__decoder__mode13(self, v_curr_row.ptr[1u], v_prev_row.ptr[5u], v_prev_row.ptr[1u]);
++        v_curr_row.ptr[6u] += wuffs_webp__decoder__mode13(self, v_curr_row.ptr[2u], v_prev_row.ptr[6u], v_prev_row.ptr[2u]);
++        v_curr_row.ptr[7u] += wuffs_webp__decoder__mode13(self, v_curr_row.ptr[3u], v_prev_row.ptr[7u], v_prev_row.ptr[3u]);
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++      }
++      v_curr_row = wuffs_base__slice_u8__subslice_i(v_curr_row, 4u);
++      v_prev_row = wuffs_base__slice_u8__subslice_i(v_prev_row, 4u);
++      v_x += 1u;
++    }
++    v_y += 1u;
++  }
++  return wuffs_base__make_empty_struct();
++}
+ 
+-// ---------------- Private Function Prototypes
++// -------- func webp.decoder.absolute_difference
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_tga__decoder__do_decode_image_config(
+-    wuffs_tga__decoder* self,
+-    wuffs_base__image_config* a_dst,
+-    wuffs_base__io_buffer* a_src);
++static uint32_t
++wuffs_webp__decoder__absolute_difference(
++    const wuffs_webp__decoder* self,
++    uint32_t a_a,
++    uint32_t a_b) {
++  if (a_a < a_b) {
++    return (a_b - a_a);
++  }
++  return (a_a - a_b);
++}
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_tga__decoder__do_decode_frame_config(
+-    wuffs_tga__decoder* self,
+-    wuffs_base__frame_config* a_dst,
+-    wuffs_base__io_buffer* a_src);
++// -------- func webp.decoder.mode12
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_tga__decoder__do_decode_frame(
+-    wuffs_tga__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts);
++static uint8_t
++wuffs_webp__decoder__mode12(
++    const wuffs_webp__decoder* self,
++    uint8_t a_l,
++    uint8_t a_t,
++    uint8_t a_tl) {
++  uint32_t v_v = 0;
+ 
+-// ---------------- VTables
++  v_v = ((uint32_t)((((uint32_t)(a_l)) + ((uint32_t)(a_t))) - ((uint32_t)(a_tl))));
++  if (v_v < 256u) {
++    return ((uint8_t)(v_v));
++  } else if (v_v < 512u) {
++    return 255u;
++  }
++  return 0u;
++}
+ 
+-const wuffs_base__image_decoder__func_ptrs
+-wuffs_tga__decoder__func_ptrs_for__wuffs_base__image_decoder = {
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__pixel_buffer*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__pixel_blend,
+-      wuffs_base__slice_u8,
+-      wuffs_base__decode_frame_options*))(&wuffs_tga__decoder__decode_frame),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__frame_config*,
+-      wuffs_base__io_buffer*))(&wuffs_tga__decoder__decode_frame_config),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__image_config*,
+-      wuffs_base__io_buffer*))(&wuffs_tga__decoder__decode_image_config),
+-  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_tga__decoder__frame_dirty_rect),
+-  (uint64_t(*)(const void*,
+-      uint32_t))(&wuffs_tga__decoder__get_quirk),
+-  (uint64_t(*)(const void*))(&wuffs_tga__decoder__history_retain_length),
+-  (uint32_t(*)(const void*))(&wuffs_tga__decoder__num_animation_loops),
+-  (uint64_t(*)(const void*))(&wuffs_tga__decoder__num_decoded_frame_configs),
+-  (uint64_t(*)(const void*))(&wuffs_tga__decoder__num_decoded_frames),
+-  (wuffs_base__status(*)(void*,
+-      uint64_t,
+-      uint64_t))(&wuffs_tga__decoder__restart_frame),
+-  (wuffs_base__status(*)(void*,
+-      uint32_t,
+-      uint64_t))(&wuffs_tga__decoder__set_quirk),
+-  (wuffs_base__empty_struct(*)(void*,
+-      uint32_t,
+-      bool))(&wuffs_tga__decoder__set_report_metadata),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__more_information*,
+-      wuffs_base__io_buffer*))(&wuffs_tga__decoder__tell_me_more),
+-  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_tga__decoder__workbuf_len),
+-};
++// -------- func webp.decoder.mode13
+ 
+-// ---------------- Initializer Implementations
++WUFFS_BASE__GENERATED_C_CODE
++static uint8_t
++wuffs_webp__decoder__mode13(
++    const wuffs_webp__decoder* self,
++    uint8_t a_l,
++    uint8_t a_t,
++    uint8_t a_tl) {
++  uint32_t v_x = 0;
++  uint32_t v_y = 0;
++  uint32_t v_z = 0;
++  uint32_t v_v = 0;
+ 
+-wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_tga__decoder__initialize(
+-    wuffs_tga__decoder* self,
+-    size_t sizeof_star_self,
+-    uint64_t wuffs_version,
+-    uint32_t options){
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (sizeof(*self) != sizeof_star_self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  v_x = ((((uint32_t)(a_l)) + ((uint32_t)(a_t))) / 2u);
++  v_y = ((uint32_t)(a_tl));
++  v_z = ((uint32_t)(v_x - v_y));
++  v_v = ((uint32_t)(v_x + wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(v_z + (v_z >> 31u))), 1u)));
++  if (v_v < 256u) {
++    return ((uint8_t)(v_v));
++  } else if (v_v < 512u) {
++    return 255u;
+   }
+-  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
+-      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++  return 0u;
++}
++
++// -------- func webp.decoder.apply_transform_cross_color
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_webp__decoder__apply_transform_cross_color(
++    wuffs_webp__decoder* self,
++    wuffs_base__slice_u8 a_pix,
++    wuffs_base__slice_u8 a_tile_data) {
++  uint32_t v_tile_size_log2 = 0;
++  uint32_t v_tiles_per_row = 0;
++  uint32_t v_mask = 0;
++  uint32_t v_y = 0;
++  uint32_t v_x = 0;
++  uint64_t v_t = 0;
++  wuffs_base__slice_u8 v_tile_data = {0};
++  uint32_t v_g2r = 0;
++  uint32_t v_g2b = 0;
++  uint32_t v_r2b = 0;
++  uint8_t v_b = 0;
++  uint8_t v_g = 0;
++  uint8_t v_r = 0;
++
++  v_tile_size_log2 = ((uint32_t)(self->private_impl.f_transform_tile_size_log2[1u]));
++  v_tiles_per_row = ((self->private_impl.f_width + ((((uint32_t)(1u)) << v_tile_size_log2) - 1u)) >> v_tile_size_log2);
++  v_mask = ((((uint32_t)(1u)) << v_tile_size_log2) - 1u);
++  v_y = 0u;
++  while (v_y < self->private_impl.f_height) {
++    v_t = ((uint64_t)((4u * (v_y >> v_tile_size_log2) * v_tiles_per_row)));
++    v_tile_data = wuffs_base__utility__empty_slice_u8();
++    if (v_t <= ((uint64_t)(a_tile_data.len))) {
++      v_tile_data = wuffs_base__slice_u8__subslice_i(a_tile_data, v_t);
++    }
++    v_x = 0u;
++    while (v_x < self->private_impl.f_width) {
++      if (((v_x & v_mask) == 0u) && (((uint64_t)(v_tile_data.len)) >= 4u)) {
++        v_g2r = wuffs_base__utility__sign_extend_convert_u8_u32(v_tile_data.ptr[0u]);
++        v_g2b = wuffs_base__utility__sign_extend_convert_u8_u32(v_tile_data.ptr[1u]);
++        v_r2b = wuffs_base__utility__sign_extend_convert_u8_u32(v_tile_data.ptr[2u]);
++        v_tile_data = wuffs_base__slice_u8__subslice_i(v_tile_data, 4u);
++      }
++      if (((uint64_t)(a_pix.len)) >= 4u) {
++        v_b = a_pix.ptr[0u];
++        v_g = a_pix.ptr[1u];
++        v_r = a_pix.ptr[2u];
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        v_r += ((uint8_t)((((uint32_t)(wuffs_base__utility__sign_extend_convert_u8_u32(v_g) * v_g2r)) >> 5u)));
++        v_b += ((uint8_t)((((uint32_t)(wuffs_base__utility__sign_extend_convert_u8_u32(v_g) * v_g2b)) >> 5u)));
++        v_b += ((uint8_t)((((uint32_t)(wuffs_base__utility__sign_extend_convert_u8_u32(v_r) * v_r2b)) >> 5u)));
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++        a_pix.ptr[0u] = v_b;
++        a_pix.ptr[2u] = v_r;
++        a_pix = wuffs_base__slice_u8__subslice_i(a_pix, 4u);
++      }
++      v_x += 1u;
++    }
++    v_y += 1u;
+   }
++  return wuffs_base__make_empty_struct();
++}
++
++// -------- func webp.decoder.apply_transform_subtract_green
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_webp__decoder__apply_transform_subtract_green(
++    wuffs_webp__decoder* self,
++    wuffs_base__slice_u8 a_pix) {
++  wuffs_base__slice_u8 v_p = {0};
++  uint8_t v_g = 0;
+ 
+-  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
+-    // The whole point of this if-check is to detect an uninitialized *self.
+-    // We disable the warning on GCC. Clang-5.0 does not have this warning.
+-#if !defined(__clang__) && defined(__GNUC__)
++  {
++    wuffs_base__slice_u8 i_slice_p = a_pix;
++    v_p.ptr = i_slice_p.ptr;
++    v_p.len = 4;
++    const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 4) * 4));
++    while (v_p.ptr < i_end0_p) {
++      v_g = v_p.ptr[1u];
++#if defined(__GNUC__)
+ #pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++#pragma GCC diagnostic ignored "-Wconversion"
+ #endif
+-    if (self->private_impl.magic != 0) {
+-      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
+-    }
+-#if !defined(__clang__) && defined(__GNUC__)
++      v_p.ptr[0u] += v_g;
++      v_p.ptr[2u] += v_g;
++#if defined(__GNUC__)
+ #pragma GCC diagnostic pop
+ #endif
+-  } else {
+-    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
+-      memset(self, 0, sizeof(*self));
+-      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
+-    } else {
+-      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++      v_p.ptr += 4;
+     }
++    v_p.len = 0;
+   }
+-
+-  self->private_impl.magic = WUFFS_BASE__MAGIC;
+-  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
+-      wuffs_base__image_decoder__vtable_name;
+-  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
+-      (const void*)(&wuffs_tga__decoder__func_ptrs_for__wuffs_base__image_decoder);
+-  return wuffs_base__make_status(NULL);
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-wuffs_tga__decoder*
+-wuffs_tga__decoder__alloc(void) {
+-  wuffs_tga__decoder* x =
+-      (wuffs_tga__decoder*)(calloc(sizeof(wuffs_tga__decoder), 1));
+-  if (!x) {
+-    return NULL;
++// -------- func webp.decoder.apply_transform_color_indexing
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_webp__decoder__apply_transform_color_indexing(
++    wuffs_webp__decoder* self,
++    wuffs_base__slice_u8 a_pix) {
++  uint32_t v_tile_size_log2 = 0;
++  uint32_t v_bits_per_pixel = 0;
++  uint32_t v_x_mask = 0;
++  uint32_t v_s_mask = 0;
++  uint64_t v_src_index = 0;
++  uint32_t v_y = 0;
++  uint64_t v_di = 0;
++  uint64_t v_dj = 0;
++  wuffs_base__slice_u8 v_dst = {0};
++  uint32_t v_x = 0;
++  uint32_t v_s = 0;
++  uint32_t v_p = 0;
++  uint8_t v_p0 = 0;
++  uint8_t v_p1 = 0;
++  uint8_t v_p2 = 0;
++  uint8_t v_p3 = 0;
++
++  v_tile_size_log2 = ((uint32_t)(self->private_impl.f_transform_tile_size_log2[3u]));
++  if (v_tile_size_log2 == 0u) {
++    {
++      wuffs_base__slice_u8 i_slice_dst = a_pix;
++      v_dst.ptr = i_slice_dst.ptr;
++      v_dst.len = 4;
++      const uint8_t* i_end0_dst = wuffs_private_impl__ptr_u8_plus_len(v_dst.ptr, (((i_slice_dst.len - (size_t)(v_dst.ptr - i_slice_dst.ptr)) / 4) * 4));
++      while (v_dst.ptr < i_end0_dst) {
++        v_p = (((uint32_t)(v_dst.ptr[1u])) * 4u);
++        v_p0 = self->private_data.f_palette[(v_p + 0u)];
++        v_p1 = self->private_data.f_palette[(v_p + 1u)];
++        v_p2 = self->private_data.f_palette[(v_p + 2u)];
++        v_p3 = self->private_data.f_palette[(v_p + 3u)];
++        v_dst.ptr[0u] = v_p0;
++        v_dst.ptr[1u] = v_p1;
++        v_dst.ptr[2u] = v_p2;
++        v_dst.ptr[3u] = v_p3;
++        v_dst.ptr += 4;
++      }
++      v_dst.len = 0;
++    }
++    return wuffs_base__make_empty_struct();
+   }
+-  if (wuffs_tga__decoder__initialize(
+-      x, sizeof(wuffs_tga__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
+-    free(x);
+-    return NULL;
++  v_bits_per_pixel = (((uint32_t)(8u)) >> v_tile_size_log2);
++  v_x_mask = ((((uint32_t)(1u)) << v_tile_size_log2) - 1u);
++  v_s_mask = ((((uint32_t)(1u)) << v_bits_per_pixel) - 1u);
++  v_src_index = ((uint64_t)((self->private_impl.f_workbuf_offset_for_color_indexing + 1u)));
++  v_y = 0u;
++  while (v_y < self->private_impl.f_height) {
++    v_di = ((uint64_t)((4u * (v_y + 0u) * self->private_impl.f_width)));
++    v_dj = ((uint64_t)((4u * (v_y + 1u) * self->private_impl.f_width)));
++    if ((v_di > v_dj) || (v_dj > ((uint64_t)(a_pix.len)))) {
++      break;
++    }
++    v_dst = wuffs_base__slice_u8__subslice_ij(a_pix, v_di, v_dj);
++    v_x = 0u;
++    while (((uint64_t)(v_dst.len)) >= 4u) {
++      if (((v_x & v_x_mask) == 0u) && (v_src_index < ((uint64_t)(a_pix.len)))) {
++        v_s = ((uint32_t)(a_pix.ptr[v_src_index]));
++        v_src_index += 4u;
++      }
++      v_p = ((v_s & v_s_mask) * 4u);
++      v_s >>= v_bits_per_pixel;
++      v_p0 = self->private_data.f_palette[(v_p + 0u)];
++      v_p1 = self->private_data.f_palette[(v_p + 1u)];
++      v_p2 = self->private_data.f_palette[(v_p + 2u)];
++      v_p3 = self->private_data.f_palette[(v_p + 3u)];
++      v_dst.ptr[0u] = v_p0;
++      v_dst.ptr[1u] = v_p1;
++      v_dst.ptr[2u] = v_p2;
++      v_dst.ptr[3u] = v_p3;
++      v_dst = wuffs_base__slice_u8__subslice_i(v_dst, 4u);
++      v_x += 1u;
++    }
++    v_y += 1u;
+   }
+-  return x;
+-}
+-
+-size_t
+-sizeof__wuffs_tga__decoder(void) {
+-  return sizeof(wuffs_tga__decoder);
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-// ---------------- Function Implementations
+-
+-// -------- func tga.decoder.get_quirk
++// -------- func webp.decoder.get_quirk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_tga__decoder__get_quirk(
+-    const wuffs_tga__decoder* self,
++wuffs_webp__decoder__get_quirk(
++    const wuffs_webp__decoder* self,
+     uint32_t a_key) {
+   if (!self) {
+     return 0;
+@@ -59162,12 +73627,12 @@ wuffs_tga__decoder__get_quirk(
+   return 0u;
+ }
+ 
+-// -------- func tga.decoder.set_quirk
++// -------- func webp.decoder.set_quirk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_tga__decoder__set_quirk(
+-    wuffs_tga__decoder* self,
++wuffs_webp__decoder__set_quirk(
++    wuffs_webp__decoder* self,
+     uint32_t a_key,
+     uint64_t a_value) {
+   if (!self) {
+@@ -59183,12 +73648,12 @@ wuffs_tga__decoder__set_quirk(
+   return wuffs_base__make_status(wuffs_base__error__unsupported_option);
+ }
+ 
+-// -------- func tga.decoder.decode_image_config
++// -------- func webp.decoder.decode_image_config
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_tga__decoder__decode_image_config(
+-    wuffs_tga__decoder* self,
++wuffs_webp__decoder__decode_image_config(
++    wuffs_webp__decoder* self,
+     wuffs_base__image_config* a_dst,
+     wuffs_base__io_buffer* a_src) {
+   if (!self) {
+@@ -59214,17 +73679,17 @@ wuffs_tga__decoder__decode_image_config(
+ 
+   wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_image_config;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+     while (true) {
+       {
+-        wuffs_base__status t_0 = wuffs_tga__decoder__do_decode_image_config(self, a_dst, a_src);
++        wuffs_base__status t_0 = wuffs_webp__decoder__do_decode_image_config(self, a_dst, a_src);
+         v_status = t_0;
+       }
+       if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_tga__error__truncated_input);
++        status = wuffs_base__make_status(wuffs_webp__error__truncated_input);
+         goto exit;
+       }
+       status = v_status;
+@@ -59232,13 +73697,13 @@ wuffs_tga__decoder__decode_image_config(
+     }
+ 
+     ok:
+-    self->private_impl.p_decode_image_config[0] = 0;
++    self->private_impl.p_decode_image_config = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.p_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+   self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
+ 
+   goto exit;
+@@ -59249,19 +73714,19 @@ wuffs_tga__decoder__decode_image_config(
+   return status;
+ }
+ 
+-// -------- func tga.decoder.do_decode_image_config
++// -------- func webp.decoder.do_decode_image_config
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_tga__decoder__do_decode_image_config(
+-    wuffs_tga__decoder* self,
++wuffs_webp__decoder__do_decode_image_config(
++    wuffs_webp__decoder* self,
+     wuffs_base__image_config* a_dst,
+     wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t v_c = 0;
+-  uint32_t v_c5 = 0;
+-  uint32_t v_i = 0;
++  uint32_t v_c32 = 0;
++  uint64_t v_r_mark = 0;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -59274,10 +73739,7 @@ wuffs_tga__decoder__do_decode_image_config(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0];
+-  if (coro_susp_point) {
+-    v_i = self->private_data.s_do_decode_image_config[0].v_i;
+-  }
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+@@ -59287,411 +73749,446 @@ wuffs_tga__decoder__do_decode_image_config(
+     }
+     {
+       WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_0 = *iop_a_src++;
+-      self->private_impl.f_header_id_length = t_0;
+-    }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_1 = *iop_a_src++;
+-      self->private_impl.f_header_color_map_type = t_1;
+-    }
+-    if (self->private_impl.f_header_color_map_type > 1u) {
+-      status = wuffs_base__make_status(wuffs_tga__error__bad_header);
+-      goto exit;
+-    }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_2 = *iop_a_src++;
+-      self->private_impl.f_header_image_type = t_2;
+-    }
+-    if ((self->private_impl.f_header_image_type == 1u) ||
+-        (self->private_impl.f_header_image_type == 2u) ||
+-        (self->private_impl.f_header_image_type == 3u) ||
+-        (self->private_impl.f_header_image_type == 9u) ||
+-        (self->private_impl.f_header_image_type == 10u) ||
+-        (self->private_impl.f_header_image_type == 11u)) {
+-    } else {
+-      status = wuffs_base__make_status(wuffs_tga__error__bad_header);
+-      goto exit;
+-    }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+-      uint16_t t_3;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-        t_3 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
+-        iop_a_src += 2;
++      uint32_t t_0;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
+       } else {
+-        self->private_data.s_do_decode_image_config[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++        self->private_data.s_do_decode_image_config.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+         while (true) {
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-          uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
++          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
+           *scratch <<= 8;
+           *scratch >>= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
+-          if (num_bits_3 == 8) {
+-            t_3 = ((uint16_t)(*scratch));
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
++          if (num_bits_0 == 24) {
++            t_0 = ((uint32_t)(*scratch));
+             break;
+           }
+-          num_bits_3 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_3)) << 56;
++          num_bits_0 += 8u;
++          *scratch |= ((uint64_t)(num_bits_0)) << 56;
+         }
+       }
+-      self->private_impl.f_header_color_map_first_entry_index = t_3;
++      v_c32 = t_0;
++    }
++    if (v_c32 != 1179011410u) {
++      status = wuffs_base__make_status(wuffs_webp__error__bad_header);
++      goto exit;
+     }
+     {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
+-      uint16_t t_4;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-        t_4 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
+-        iop_a_src += 2;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++      uint32_t t_1;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
+       } else {
+-        self->private_data.s_do_decode_image_config[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++        self->private_data.s_do_decode_image_config.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+         while (true) {
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-          uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
++          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
++          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
+           *scratch <<= 8;
+           *scratch >>= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
+-          if (num_bits_4 == 8) {
+-            t_4 = ((uint16_t)(*scratch));
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
++          if (num_bits_1 == 24) {
++            t_1 = ((uint32_t)(*scratch));
+             break;
+           }
+-          num_bits_4 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_4)) << 56;
++          num_bits_1 += 8u;
++          *scratch |= ((uint64_t)(num_bits_1)) << 56;
+         }
+       }
+-      self->private_impl.f_header_color_map_length = t_4;
++      self->private_impl.f_riff_chunk_length = t_1;
+     }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_5 = *iop_a_src++;
+-      self->private_impl.f_header_color_map_entry_size = t_5;
++    if ((self->private_impl.f_riff_chunk_length & 1u) != 0u) {
++      status = wuffs_base__make_status(wuffs_webp__error__bad_header);
++      goto exit;
+     }
+-    if (self->private_impl.f_header_color_map_type != 0u) {
+-      if ((self->private_impl.f_header_color_map_first_entry_index != 0u) || (self->private_impl.f_header_color_map_length > 256u)) {
+-        status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file);
+-        goto exit;
+-      } else if ((self->private_impl.f_header_color_map_entry_size != 15u) &&
+-          (self->private_impl.f_header_color_map_entry_size != 16u) &&
+-          (self->private_impl.f_header_color_map_entry_size != 24u) &&
+-          (self->private_impl.f_header_color_map_entry_size != 32u)) {
+-        status = wuffs_base__make_status(wuffs_tga__error__bad_header);
+-        goto exit;
++    while (true) {
++      {
++        const bool o_0_closed_a_src = a_src->meta.closed;
++        const uint8_t* o_0_io2_a_src = io2_a_src;
++        wuffs_private_impl__io_reader__limit(&io2_a_src, iop_a_src,
++            ((uint64_t)(self->private_impl.f_riff_chunk_length)));
++        if (a_src) {
++          size_t n = ((size_t)(io2_a_src - a_src->data.ptr));
++          a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n);
++          a_src->meta.wi = n;
++        }
++        v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
++        {
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          wuffs_base__status t_2 = wuffs_webp__decoder__do_decode_image_config_limited(self, a_src);
++          v_status = t_2;
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++        }
++        wuffs_private_impl__u32__sat_sub_indirect(&self->private_impl.f_riff_chunk_length, ((uint32_t)(wuffs_private_impl__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))))));
++        io2_a_src = o_0_io2_a_src;
++        if (a_src) {
++          a_src->meta.closed = o_0_closed_a_src;
++          a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
++        }
+       }
+-    } else {
+-      if ((self->private_impl.f_header_color_map_first_entry_index != 0u) || (self->private_impl.f_header_color_map_length != 0u) || (self->private_impl.f_header_color_map_entry_size != 0u)) {
+-        status = wuffs_base__make_status(wuffs_tga__error__bad_header);
++      if (wuffs_base__status__is_ok(&v_status)) {
++        break;
++      } else if ( ! wuffs_base__status__is_suspension(&v_status)) {
++        status = v_status;
++        if (wuffs_base__status__is_error(&status)) {
++          goto exit;
++        } else if (wuffs_base__status__is_suspension(&status)) {
++          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++          goto exit;
++        }
++        goto ok;
++      } else if ((v_status.repr == wuffs_base__suspension__short_read) && (self->private_impl.f_riff_chunk_length == 0u)) {
++        status = wuffs_base__make_status(wuffs_webp__error__short_chunk);
+         goto exit;
+       }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
+     }
+-    self->private_data.s_do_decode_image_config[0].scratch = 4u;
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
+-    if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-      self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-      iop_a_src = io2_a_src;
+-      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-      goto suspend;
++    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
++    if (a_dst != NULL) {
++      wuffs_base__image_config__set(
++          a_dst,
++          self->private_impl.f_pixfmt,
++          0u,
++          self->private_impl.f_width,
++          self->private_impl.f_height,
++          self->private_impl.f_frame_config_io_position,
++          false);
+     }
+-    iop_a_src += self->private_data.s_do_decode_image_config[0].scratch;
++    self->private_impl.f_call_sequence = 32u;
++
++    ok:
++    self->private_impl.p_do_decode_image_config = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func webp.decoder.do_decode_image_config_limited
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__do_decode_image_config_limited(
++    wuffs_webp__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint32_t v_c32 = 0;
++  uint64_t v_r_mark = 0;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config_limited;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
+     {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
+-      uint32_t t_6;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-        t_6 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-        iop_a_src += 2;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      uint32_t t_0;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
+       } else {
+-        self->private_data.s_do_decode_image_config[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
++        self->private_data.s_do_decode_image_config_limited.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+         while (true) {
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-          uint32_t num_bits_6 = ((uint32_t)(*scratch >> 56));
++          uint64_t* scratch = &self->private_data.s_do_decode_image_config_limited.scratch;
++          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
+           *scratch <<= 8;
+           *scratch >>= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_6;
+-          if (num_bits_6 == 8) {
+-            t_6 = ((uint32_t)(*scratch));
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
++          if (num_bits_0 == 24) {
++            t_0 = ((uint32_t)(*scratch));
+             break;
+           }
+-          num_bits_6 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_6)) << 56;
++          num_bits_0 += 8u;
++          *scratch |= ((uint64_t)(num_bits_0)) << 56;
+         }
+       }
+-      self->private_impl.f_width = t_6;
++      v_c32 = t_0;
++    }
++    if (v_c32 != 1346520407u) {
++      status = wuffs_base__make_status(wuffs_webp__error__bad_header);
++      goto exit;
+     }
+     {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
+-      uint32_t t_7;
+-      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-        t_7 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-        iop_a_src += 2;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++      uint32_t t_1;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
+       } else {
+-        self->private_data.s_do_decode_image_config[0].scratch = 0;
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
++        self->private_data.s_do_decode_image_config_limited.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
+         while (true) {
+           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+             goto suspend;
+           }
+-          uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-          uint32_t num_bits_7 = ((uint32_t)(*scratch >> 56));
++          uint64_t* scratch = &self->private_data.s_do_decode_image_config_limited.scratch;
++          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
+           *scratch <<= 8;
+           *scratch >>= 8;
+-          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_7;
+-          if (num_bits_7 == 8) {
+-            t_7 = ((uint32_t)(*scratch));
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
++          if (num_bits_1 == 24) {
++            t_1 = ((uint32_t)(*scratch));
+             break;
+           }
+-          num_bits_7 += 8u;
+-          *scratch |= ((uint64_t)(num_bits_7)) << 56;
++          num_bits_1 += 8u;
++          *scratch |= ((uint64_t)(num_bits_1)) << 56;
+         }
+       }
+-      self->private_impl.f_height = t_7;
+-    }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_8 = *iop_a_src++;
+-      self->private_impl.f_header_pixel_depth = t_8;
++      v_c32 = t_1;
+     }
+-    if ((self->private_impl.f_header_pixel_depth != 1u) &&
+-        (self->private_impl.f_header_pixel_depth != 8u) &&
+-        (self->private_impl.f_header_pixel_depth != 15u) &&
+-        (self->private_impl.f_header_pixel_depth != 16u) &&
+-        (self->private_impl.f_header_pixel_depth != 24u) &&
+-        (self->private_impl.f_header_pixel_depth != 32u)) {
+-      status = wuffs_base__make_status(wuffs_tga__error__bad_header);
++    if (v_c32 == 540561494u) {
++      status = wuffs_base__make_status(wuffs_webp__error__unsupported_webp_file);
+       goto exit;
+-    }
+-    if ((self->private_impl.f_header_image_type | 8u) == 9u) {
+-      self->private_impl.f_scratch_bytes_per_pixel = 1u;
+-      self->private_impl.f_src_bytes_per_pixel = 1u;
+-      self->private_impl.f_src_pixfmt = 2164523016u;
+-      self->private_impl.f_opaque = ((self->private_impl.f_header_color_map_entry_size == 15u) || (self->private_impl.f_header_color_map_entry_size == 24u));
+-    } else if ((self->private_impl.f_header_image_type | 8u) == 10u) {
+-      if ((self->private_impl.f_header_pixel_depth == 15u) || (self->private_impl.f_header_pixel_depth == 16u)) {
+-        self->private_impl.f_scratch_bytes_per_pixel = 4u;
+-        self->private_impl.f_src_bytes_per_pixel = 0u;
+-        self->private_impl.f_src_pixfmt = 2164295816u;
+-      } else if (self->private_impl.f_header_pixel_depth == 24u) {
+-        self->private_impl.f_scratch_bytes_per_pixel = 3u;
+-        self->private_impl.f_src_bytes_per_pixel = 3u;
+-        self->private_impl.f_src_pixfmt = 2147485832u;
+-        self->private_impl.f_opaque = true;
+-      } else if (self->private_impl.f_header_pixel_depth == 32u) {
+-        self->private_impl.f_scratch_bytes_per_pixel = 4u;
+-        self->private_impl.f_src_bytes_per_pixel = 4u;
+-        self->private_impl.f_src_pixfmt = 2164295816u;
+-      } else {
+-        status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file);
+-        goto exit;
++    } else if (v_c32 == 1278758998u) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++        uint32_t t_2;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++          t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++          iop_a_src += 4;
++        } else {
++          self->private_data.s_do_decode_image_config_limited.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_decode_image_config_limited.scratch;
++            uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
++            if (num_bits_2 == 24) {
++              t_2 = ((uint32_t)(*scratch));
++              break;
++            }
++            num_bits_2 += 8u;
++            *scratch |= ((uint64_t)(num_bits_2)) << 56;
++          }
++        }
++        self->private_impl.f_sub_chunk_length = t_2;
+       }
+-    } else {
+-      if (self->private_impl.f_header_pixel_depth == 8u) {
+-        self->private_impl.f_scratch_bytes_per_pixel = 1u;
+-        self->private_impl.f_src_bytes_per_pixel = 1u;
+-        self->private_impl.f_src_pixfmt = 536870920u;
+-        self->private_impl.f_opaque = true;
+-      } else {
+-        status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file);
++      if (self->private_impl.f_sub_chunk_length < 4u) {
++        status = wuffs_base__make_status(wuffs_webp__error__bad_header);
+         goto exit;
+       }
+-    }
+-    {
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
+-      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-        goto suspend;
+-      }
+-      uint8_t t_9 = *iop_a_src++;
+-      self->private_impl.f_header_image_descriptor = t_9;
+-    }
+-    if ((self->private_impl.f_header_image_descriptor & 16u) != 0u) {
+-      status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file);
+-      goto exit;
+-    }
+-    self->private_data.s_do_decode_image_config[0].scratch = ((uint32_t)(self->private_impl.f_header_id_length));
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
+-    if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-      self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-      iop_a_src = io2_a_src;
+-      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-      goto suspend;
+-    }
+-    iop_a_src += self->private_data.s_do_decode_image_config[0].scratch;
+-    if (self->private_impl.f_header_color_map_type != 0u) {
+-      while (v_i < ((uint32_t)(self->private_impl.f_header_color_map_length))) {
+-        if (self->private_impl.f_header_color_map_entry_size == 24u) {
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(17);
+-            uint32_t t_10;
+-            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
+-              t_10 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
+-              iop_a_src += 3;
+-            } else {
+-              self->private_data.s_do_decode_image_config[0].scratch = 0;
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(18);
+-              while (true) {
+-                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                  goto suspend;
+-                }
+-                uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-                uint32_t num_bits_10 = ((uint32_t)(*scratch >> 56));
+-                *scratch <<= 8;
+-                *scratch >>= 8;
+-                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_10;
+-                if (num_bits_10 == 16) {
+-                  t_10 = ((uint32_t)(*scratch));
+-                  break;
+-                }
+-                num_bits_10 += 8u;
+-                *scratch |= ((uint64_t)(num_bits_10)) << 56;
+-              }
+-            }
+-            v_c = t_10;
++      self->private_impl.f_sub_chunk_has_padding = ((self->private_impl.f_sub_chunk_length & 1u) != 0u);
++      while (true) {
++        {
++          const bool o_0_closed_a_src = a_src->meta.closed;
++          const uint8_t* o_0_io2_a_src = io2_a_src;
++          wuffs_private_impl__io_reader__limit(&io2_a_src, iop_a_src,
++              ((uint64_t)(self->private_impl.f_sub_chunk_length)));
++          if (a_src) {
++            size_t n = ((size_t)(io2_a_src - a_src->data.ptr));
++            a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n);
++            a_src->meta.wi = n;
+           }
+-          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 0u)] = ((uint8_t)((v_c >> 0u)));
+-          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 1u)] = ((uint8_t)((v_c >> 8u)));
+-          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 2u)] = ((uint8_t)((v_c >> 16u)));
+-          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 3u)] = 255u;
+-        } else if (self->private_impl.f_header_color_map_entry_size == 32u) {
++          v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
+           {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(19);
+-            uint32_t t_11;
+-            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
+-              t_11 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
+-              iop_a_src += 4;
+-            } else {
+-              self->private_data.s_do_decode_image_config[0].scratch = 0;
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(20);
+-              while (true) {
+-                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                  goto suspend;
+-                }
+-                uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-                uint32_t num_bits_11 = ((uint32_t)(*scratch >> 56));
+-                *scratch <<= 8;
+-                *scratch >>= 8;
+-                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_11;
+-                if (num_bits_11 == 24) {
+-                  t_11 = ((uint32_t)(*scratch));
+-                  break;
+-                }
+-                num_bits_11 += 8u;
+-                *scratch |= ((uint64_t)(num_bits_11)) << 56;
+-              }
++            if (a_src) {
++              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+             }
+-            v_c = t_11;
+-          }
+-          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 0u)] = ((uint8_t)((v_c >> 0u)));
+-          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 1u)] = ((uint8_t)((v_c >> 8u)));
+-          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 2u)] = ((uint8_t)((v_c >> 16u)));
+-          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 3u)] = ((uint8_t)((v_c >> 24u)));
+-        } else {
+-          {
+-            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(21);
+-            uint32_t t_12;
+-            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
+-              t_12 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-              iop_a_src += 2;
+-            } else {
+-              self->private_data.s_do_decode_image_config[0].scratch = 0;
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22);
+-              while (true) {
+-                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                  goto suspend;
+-                }
+-                uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
+-                uint32_t num_bits_12 = ((uint32_t)(*scratch >> 56));
+-                *scratch <<= 8;
+-                *scratch >>= 8;
+-                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_12;
+-                if (num_bits_12 == 8) {
+-                  t_12 = ((uint32_t)(*scratch));
+-                  break;
+-                }
+-                num_bits_12 += 8u;
+-                *scratch |= ((uint64_t)(num_bits_12)) << 56;
+-              }
++            wuffs_base__status t_3 = wuffs_webp__decoder__do_decode_image_config_limited_vp8l(self, a_src);
++            v_status = t_3;
++            if (a_src) {
++              iop_a_src = a_src->data.ptr + a_src->meta.ri;
+             }
+-            v_c = t_12;
+           }
+-          v_c5 = (31u & (v_c >> 0u));
+-          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 0u)] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
+-          v_c5 = (31u & (v_c >> 5u));
+-          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 1u)] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
+-          v_c5 = (31u & (v_c >> 10u));
+-          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 2u)] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
+-          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 3u)] = 255u;
++          wuffs_private_impl__u32__sat_sub_indirect(&self->private_impl.f_sub_chunk_length, ((uint32_t)(wuffs_private_impl__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))))));
++          io2_a_src = o_0_io2_a_src;
++          if (a_src) {
++            a_src->meta.closed = o_0_closed_a_src;
++            a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
++          }
++        }
++        if (wuffs_base__status__is_ok(&v_status)) {
++          break;
++        } else if ( ! wuffs_base__status__is_suspension(&v_status)) {
++          status = v_status;
++          if (wuffs_base__status__is_error(&status)) {
++            goto exit;
++          } else if (wuffs_base__status__is_suspension(&status)) {
++            status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++            goto exit;
++          }
++          goto ok;
++        } else if ((v_status.repr == wuffs_base__suspension__short_read) && (self->private_impl.f_sub_chunk_length == 0u)) {
++          status = wuffs_base__make_status(wuffs_webp__error__short_chunk);
++          goto exit;
+         }
+-        v_i += 1u;
++        status = v_status;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
+       }
+-      while (v_i < 256u) {
+-        self->private_data.f_src_palette[((v_i * 4u) + 0u)] = 0u;
+-        self->private_data.f_src_palette[((v_i * 4u) + 1u)] = 0u;
+-        self->private_data.f_src_palette[((v_i * 4u) + 2u)] = 0u;
+-        self->private_data.f_src_palette[((v_i * 4u) + 3u)] = 255u;
+-        v_i += 1u;
++    } else if (v_c32 == 1480085590u) {
++      status = wuffs_base__make_status(wuffs_webp__error__unsupported_webp_file);
++      goto exit;
++    } else {
++      status = wuffs_base__make_status(wuffs_webp__error__bad_header);
++      goto exit;
++    }
++
++    ok:
++    self->private_impl.p_do_decode_image_config_limited = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_image_config_limited = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func webp.decoder.do_decode_image_config_limited_vp8l
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__do_decode_image_config_limited_vp8l(
++    wuffs_webp__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint32_t v_c32 = 0;
++  uint32_t v_transform_size = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config_limited_vp8l;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
+       }
++      uint32_t t_0 = *iop_a_src++;
++      v_c32 = t_0;
+     }
+-    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
+-    if (a_dst != NULL) {
+-      wuffs_base__image_config__set(
+-          a_dst,
+-          self->private_impl.f_src_pixfmt,
+-          0u,
+-          self->private_impl.f_width,
+-          self->private_impl.f_height,
+-          self->private_impl.f_frame_config_io_position,
+-          self->private_impl.f_opaque);
++    if (v_c32 != 47u) {
++      status = wuffs_base__make_status(wuffs_webp__error__bad_header);
++      goto exit;
+     }
+-    self->private_impl.f_call_sequence = 32u;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++      uint32_t t_1;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_do_decode_image_config_limited_vp8l.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_do_decode_image_config_limited_vp8l.scratch;
++          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
++          *scratch <<= 8;
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
++          if (num_bits_1 == 24) {
++            t_1 = ((uint32_t)(*scratch));
++            break;
++          }
++          num_bits_1 += 8u;
++          *scratch |= ((uint64_t)(num_bits_1)) << 56;
++        }
++      }
++      v_c32 = t_1;
++    }
++    self->private_impl.f_width = ((v_c32 & 16383u) + 1u);
++    v_c32 >>= 14u;
++    self->private_impl.f_height = ((v_c32 & 16383u) + 1u);
++    v_c32 >>= 14u;
++    self->private_impl.f_pixfmt = 2415954056u;
++    if ((v_c32 & 1u) != 0u) {
++      self->private_impl.f_pixfmt = 2164295816u;
++    }
++    v_c32 >>= 1u;
++    if (v_c32 != 0u) {
++      status = wuffs_base__make_status(wuffs_webp__error__bad_header);
++      goto exit;
++    }
++    v_transform_size = (4u * ((self->private_impl.f_width + 3u) >> 2u) * ((self->private_impl.f_height + 3u) >> 2u));
++    self->private_impl.f_workbuf_offset_for_transform[0u] = ((4u * self->private_impl.f_width * self->private_impl.f_height) + (0u * v_transform_size));
++    self->private_impl.f_workbuf_offset_for_transform[1u] = ((4u * self->private_impl.f_width * self->private_impl.f_height) + (1u * v_transform_size));
++    self->private_impl.f_workbuf_offset_for_transform[2u] = ((4u * self->private_impl.f_width * self->private_impl.f_height) + (2u * v_transform_size));
++    self->private_impl.f_workbuf_offset_for_transform[3u] = ((4u * self->private_impl.f_width * self->private_impl.f_height) + (3u * v_transform_size));
+ 
+     goto ok;
+     ok:
+-    self->private_impl.p_do_decode_image_config[0] = 0;
++    self->private_impl.p_do_decode_image_config_limited_vp8l = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_do_decode_image_config[0].v_i = v_i;
++  self->private_impl.p_do_decode_image_config_limited_vp8l = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+   goto exit;
+   exit:
+@@ -59702,12 +74199,12 @@ wuffs_tga__decoder__do_decode_image_config(
+   return status;
+ }
+ 
+-// -------- func tga.decoder.decode_frame_config
++// -------- func webp.decoder.decode_frame_config
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_tga__decoder__decode_frame_config(
+-    wuffs_tga__decoder* self,
++wuffs_webp__decoder__decode_frame_config(
++    wuffs_webp__decoder* self,
+     wuffs_base__frame_config* a_dst,
+     wuffs_base__io_buffer* a_src) {
+   if (!self) {
+@@ -59733,17 +74230,17 @@ wuffs_tga__decoder__decode_frame_config(
+ 
+   wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+     while (true) {
+       {
+-        wuffs_base__status t_0 = wuffs_tga__decoder__do_decode_frame_config(self, a_dst, a_src);
++        wuffs_base__status t_0 = wuffs_webp__decoder__do_decode_frame_config(self, a_dst, a_src);
+         v_status = t_0;
+       }
+       if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_tga__error__truncated_input);
++        status = wuffs_base__make_status(wuffs_webp__error__truncated_input);
+         goto exit;
+       }
+       status = v_status;
+@@ -59751,13 +74248,13 @@ wuffs_tga__decoder__decode_frame_config(
+     }
+ 
+     ok:
+-    self->private_impl.p_decode_frame_config[0] = 0;
++    self->private_impl.p_decode_frame_config = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.p_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+   self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
+ 
+   goto exit;
+@@ -59768,12 +74265,12 @@ wuffs_tga__decoder__decode_frame_config(
+   return status;
+ }
+ 
+-// -------- func tga.decoder.do_decode_frame_config
++// -------- func webp.decoder.do_decode_frame_config
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_tga__decoder__do_decode_frame_config(
+-    wuffs_tga__decoder* self,
++wuffs_webp__decoder__do_decode_frame_config(
++    wuffs_webp__decoder* self,
+     wuffs_base__frame_config* a_dst,
+     wuffs_base__io_buffer* a_src) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+@@ -59789,7 +74286,7 @@ wuffs_tga__decoder__do_decode_frame_config(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0];
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+@@ -59799,7 +74296,7 @@ wuffs_tga__decoder__do_decode_frame_config(
+         a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+       }
+       WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      status = wuffs_tga__decoder__do_decode_image_config(self, NULL, a_src);
++      status = wuffs_webp__decoder__do_decode_image_config(self, NULL, a_src);
+       if (a_src) {
+         iop_a_src = a_src->data.ptr + a_src->meta.ri;
+       }
+@@ -59831,20 +74328,20 @@ wuffs_tga__decoder__do_decode_frame_config(
+           0u,
+           self->private_impl.f_frame_config_io_position,
+           0u,
+-          self->private_impl.f_opaque,
+           false,
+-          4278190080u);
++          false,
++          0u);
+     }
+     self->private_impl.f_call_sequence = 64u;
+ 
+     ok:
+-    self->private_impl.p_do_decode_frame_config[0] = 0;
++    self->private_impl.p_do_decode_frame_config = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.p_do_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+   goto exit;
+   exit:
+@@ -59855,12 +74352,12 @@ wuffs_tga__decoder__do_decode_frame_config(
+   return status;
+ }
+ 
+-// -------- func tga.decoder.decode_frame
++// -------- func webp.decoder.decode_frame
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_tga__decoder__decode_frame(
+-    wuffs_tga__decoder* self,
++wuffs_webp__decoder__decode_frame(
++    wuffs_webp__decoder* self,
+     wuffs_base__pixel_buffer* a_dst,
+     wuffs_base__io_buffer* a_src,
+     wuffs_base__pixel_blend a_blend,
+@@ -59889,13 +74386,13 @@ wuffs_tga__decoder__decode_frame(
+ 
+   wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_decode_frame[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_frame;
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+     while (true) {
+       {
+-        wuffs_base__status t_0 = wuffs_tga__decoder__do_decode_frame(self,
++        wuffs_base__status t_0 = wuffs_webp__decoder__do_decode_frame(self,
+             a_dst,
+             a_src,
+             a_blend,
+@@ -59904,64 +74401,627 @@ wuffs_tga__decoder__decode_frame(
+         v_status = t_0;
+       }
+       if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_tga__error__truncated_input);
++        status = wuffs_base__make_status(wuffs_webp__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++
++    ok:
++    self->private_impl.p_decode_frame = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
++
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  }
++  return status;
++}
++
++// -------- func webp.decoder.do_decode_frame
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__do_decode_frame(
++    wuffs_webp__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__pixel_blend a_blend,
++    wuffs_base__slice_u8 a_workbuf,
++    wuffs_base__decode_frame_options* a_opts) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_c8 = 0;
++  uint32_t v_has_more = 0;
++  uint32_t v_width = 0;
++  wuffs_base__slice_u8 v_dst = {0};
++  wuffs_base__slice_u8 v_tile_data = {0};
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++  wuffs_base__slice_u8 v_pix = {0};
++  uint32_t v_which = 0;
++  uint32_t v_transform_type = 0;
++  uint64_t v_ti = 0;
++  uint64_t v_tj = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame;
++  if (coro_susp_point) {
++    v_width = self->private_data.s_do_decode_frame.v_width;
++  }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_call_sequence == 64u) {
++    } else if (self->private_impl.f_call_sequence < 64u) {
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      status = wuffs_webp__decoder__do_decode_frame_config(self, NULL, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++    } else {
++      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      goto ok;
++    }
++    self->private_impl.f_seen_transform[0u] = false;
++    self->private_impl.f_seen_transform[1u] = false;
++    self->private_impl.f_seen_transform[2u] = false;
++    self->private_impl.f_seen_transform[3u] = false;
++    self->private_impl.f_n_transforms = 0u;
++    while (true) {
++      if (self->private_impl.f_n_bits < 1u) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_0 = *iop_a_src++;
++          v_c8 = t_0;
++        }
++        self->private_impl.f_bits = ((uint32_t)(v_c8));
++        self->private_impl.f_n_bits = 8u;
++      }
++      v_has_more = (self->private_impl.f_bits & 1u);
++      self->private_impl.f_bits >>= 1u;
++      self->private_impl.f_n_bits -= 1u;
++      if (v_has_more == 0u) {
++        break;
++      }
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++      status = wuffs_webp__decoder__decode_transform(self, a_src, a_workbuf);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++    }
++    v_width = self->private_impl.f_width;
++    if (self->private_impl.f_seen_transform[3u]) {
++      v_width = self->private_impl.f_color_indexing_width;
++    }
++    if (a_src) {
++      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++    }
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++    status = wuffs_webp__decoder__decode_color_cache_parameters(self, a_src);
++    if (a_src) {
++      iop_a_src = a_src->data.ptr + a_src->meta.ri;
++    }
++    if (status.repr) {
++      goto suspend;
++    }
++    self->private_impl.f_overall_color_cache_bits = self->private_impl.f_color_cache_bits;
++    if (a_src) {
++      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++    }
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++    status = wuffs_webp__decoder__decode_hg_table(self, a_src, v_width, a_workbuf);
++    if (a_src) {
++      iop_a_src = a_src->data.ptr + a_src->meta.ri;
++    }
++    if (status.repr) {
++      goto suspend;
++    }
++    self->private_impl.f_color_cache_bits = self->private_impl.f_overall_color_cache_bits;
++    if (a_src) {
++      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++    }
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++    status = wuffs_webp__decoder__decode_huffman_groups(self, a_src, self->private_impl.f_overall_n_huffman_groups);
++    if (a_src) {
++      iop_a_src = a_src->data.ptr + a_src->meta.ri;
++    }
++    if (status.repr) {
++      goto suspend;
++    }
++    while (true) {
++      if ((((uint64_t)(self->private_impl.f_workbuf_offset_for_color_indexing)) > ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u]))) ||
++          (((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])) > ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u]))) ||
++          (((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u])) > ((uint64_t)(a_workbuf.len))) ||
++          (((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])) > ((uint64_t)(a_workbuf.len)))) {
++        status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
++        goto exit;
++      }
++      v_dst = wuffs_base__slice_u8__subslice_ij(a_workbuf,
++          ((uint64_t)(self->private_impl.f_workbuf_offset_for_color_indexing)),
++          ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])));
++      v_tile_data = wuffs_base__slice_u8__subslice_ij(a_workbuf,
++          ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])),
++          ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u])));
++      {
++        if (a_src) {
++          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++        }
++        wuffs_base__status t_1 = wuffs_webp__decoder__decode_pixels(self,
++            v_dst,
++            a_src,
++            v_width,
++            self->private_impl.f_height,
++            v_tile_data,
++            self->private_impl.f_overall_tile_size_log2);
++        v_status = t_1;
++        if (a_src) {
++          iop_a_src = a_src->data.ptr + a_src->meta.ri;
++        }
++      }
++      if (wuffs_base__status__is_ok(&v_status)) {
++        break;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
++    }
++    if (((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])) > ((uint64_t)(a_workbuf.len))) {
++      status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
++      goto exit;
++    }
++    v_pix = wuffs_base__slice_u8__subslice_j(a_workbuf, ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])));
++    v_which = self->private_impl.f_n_transforms;
++    while (v_which > 0u) {
++      v_which -= 1u;
++      v_transform_type = ((uint32_t)(self->private_impl.f_transform_type[v_which]));
++      v_tile_data = wuffs_base__utility__empty_slice_u8();
++      if (v_transform_type < 2u) {
++        v_ti = ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[(v_transform_type + 1u)]));
++        v_tj = ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[(v_transform_type + 2u)]));
++        if ((v_ti <= v_tj) && (v_tj <= ((uint64_t)(a_workbuf.len)))) {
++          v_tile_data = wuffs_base__slice_u8__subslice_ij(a_workbuf, v_ti, v_tj);
++        }
++      }
++      if (v_transform_type == 0u) {
++        wuffs_webp__decoder__apply_transform_predictor(self, v_pix, v_tile_data);
++      } else if (v_transform_type == 1u) {
++        wuffs_webp__decoder__apply_transform_cross_color(self, v_pix, v_tile_data);
++      } else if (v_transform_type == 2u) {
++        wuffs_webp__decoder__apply_transform_subtract_green(self, v_pix);
++      } else {
++        wuffs_webp__decoder__apply_transform_color_indexing(self, v_pix);
++        v_width = self->private_impl.f_width;
++      }
++    }
++    v_status = wuffs_webp__decoder__swizzle(self, a_dst, v_pix, a_blend);
++    if ( ! wuffs_base__status__is_ok(&v_status)) {
++      status = v_status;
++      if (wuffs_base__status__is_error(&status)) {
++        goto exit;
++      } else if (wuffs_base__status__is_suspension(&status)) {
++        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++        goto exit;
++      }
++      goto ok;
++    }
++    self->private_impl.f_call_sequence = 96u;
++
++    ok:
++    self->private_impl.p_do_decode_frame = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_do_decode_frame.v_width = v_width;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func webp.decoder.decode_transform
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__decode_transform(
++    wuffs_webp__decoder* self,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++  uint8_t v_c8 = 0;
++  uint32_t v_transform_type = 0;
++  uint32_t v_tile_size_log2 = 0;
++  wuffs_base__slice_u8 v_p = {0};
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_transform;
++  if (coro_susp_point) {
++    v_transform_type = self->private_data.s_decode_transform.v_transform_type;
++    v_tile_size_log2 = self->private_data.s_decode_transform.v_tile_size_log2;
++  }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_n_bits < 2u) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_0 = *iop_a_src++;
++        v_c8 = t_0;
++      }
++      if (self->private_impl.f_n_bits >= 2u) {
++        status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
++        goto exit;
++      }
++      self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
++      self->private_impl.f_n_bits += 8u;
++    }
++    v_transform_type = (self->private_impl.f_bits & 3u);
++    self->private_impl.f_bits >>= 2u;
++    self->private_impl.f_n_bits -= 2u;
++    if (self->private_impl.f_seen_transform[v_transform_type] || (self->private_impl.f_n_transforms >= 4u)) {
++      status = wuffs_base__make_status(wuffs_webp__error__bad_transform);
++      goto exit;
++    } else if (self->private_impl.f_seen_transform[3u]) {
++      status = wuffs_base__make_status(wuffs_webp__error__unsupported_transform_after_color_indexing_transform);
++      goto exit;
++    }
++    self->private_impl.f_seen_transform[v_transform_type] = true;
++    self->private_impl.f_transform_type[self->private_impl.f_n_transforms] = ((uint8_t)(v_transform_type));
++    self->private_impl.f_n_transforms += 1u;
++    if (v_transform_type < 2u) {
++      if (self->private_impl.f_n_bits < 3u) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_1 = *iop_a_src++;
++          v_c8 = t_1;
++        }
++        if (self->private_impl.f_n_bits >= 3u) {
++          status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
++          goto exit;
++        }
++        self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
++        self->private_impl.f_n_bits += 8u;
++      }
++      v_tile_size_log2 = ((self->private_impl.f_bits & 7u) + 2u);
++      self->private_impl.f_transform_tile_size_log2[v_transform_type] = ((uint8_t)(v_tile_size_log2));
++      self->private_impl.f_bits >>= 3u;
++      self->private_impl.f_n_bits -= 3u;
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++      status = wuffs_webp__decoder__decode_color_cache_parameters(self, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++      status = wuffs_webp__decoder__decode_huffman_groups(self, a_src, 1u);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++      while (true) {
++        if ((((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[(v_transform_type + 1u)])) > ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[(v_transform_type + 2u)]))) || (((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[(v_transform_type + 2u)])) > ((uint64_t)(a_workbuf.len)))) {
++          status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
++          goto exit;
++        }
++        {
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          wuffs_base__status t_2 = wuffs_webp__decoder__decode_pixels(self,
++              wuffs_base__slice_u8__subslice_ij(a_workbuf,
++              ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[(v_transform_type + 1u)])),
++              ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[(v_transform_type + 2u)]))),
++              a_src,
++              ((self->private_impl.f_width + ((((uint32_t)(1u)) << v_tile_size_log2) - 1u)) >> v_tile_size_log2),
++              ((self->private_impl.f_height + ((((uint32_t)(1u)) << v_tile_size_log2) - 1u)) >> v_tile_size_log2),
++              wuffs_base__utility__empty_slice_u8(),
++              0u);
++          v_status = t_2;
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++        }
++        if (wuffs_base__status__is_ok(&v_status)) {
++          break;
++        }
++        status = v_status;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
++      }
++    } else if (v_transform_type == 2u) {
++    } else {
++      if (self->private_impl.f_n_bits < 8u) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_3 = *iop_a_src++;
++          v_c8 = t_3;
++        }
++        if (self->private_impl.f_n_bits >= 8u) {
++          status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
++          goto exit;
++        }
++        self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
++        self->private_impl.f_n_bits += 8u;
++      }
++      self->private_impl.f_color_indexing_palette_size = ((self->private_impl.f_bits & 255u) + 1u);
++      self->private_impl.f_bits >>= 8u;
++      self->private_impl.f_n_bits -= 8u;
++      if (self->private_impl.f_color_indexing_palette_size <= 2u) {
++        self->private_impl.f_color_indexing_width = ((self->private_impl.f_width + 7u) / 8u);
++        self->private_impl.f_transform_tile_size_log2[3u] = 3u;
++      } else if (self->private_impl.f_color_indexing_palette_size <= 4u) {
++        self->private_impl.f_color_indexing_width = ((self->private_impl.f_width + 3u) / 4u);
++        self->private_impl.f_transform_tile_size_log2[3u] = 2u;
++      } else if (self->private_impl.f_color_indexing_palette_size <= 16u) {
++        self->private_impl.f_color_indexing_width = ((self->private_impl.f_width + 1u) / 2u);
++        self->private_impl.f_transform_tile_size_log2[3u] = 1u;
++      } else {
++        self->private_impl.f_color_indexing_width = self->private_impl.f_width;
++        self->private_impl.f_transform_tile_size_log2[3u] = 0u;
++      }
++      if (self->private_impl.f_width >= self->private_impl.f_color_indexing_width) {
++        self->private_impl.f_workbuf_offset_for_color_indexing = (4u * (self->private_impl.f_width - self->private_impl.f_color_indexing_width) * self->private_impl.f_height);
++      }
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++      status = wuffs_webp__decoder__decode_color_cache_parameters(self, a_src);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++      status = wuffs_webp__decoder__decode_huffman_groups(self, a_src, 1u);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++      if (a_src) {
++        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++      }
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++      status = wuffs_webp__decoder__decode_pixels(self,
++          wuffs_base__make_slice_u8(self->private_data.f_palette, (4u * self->private_impl.f_color_indexing_palette_size)),
++          a_src,
++          self->private_impl.f_color_indexing_palette_size,
++          1u,
++          wuffs_base__utility__empty_slice_u8(),
++          0u);
++      if (a_src) {
++        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      }
++      if (status.repr) {
++        goto suspend;
++      }
++      wuffs_private_impl__bulk_memset(&self->private_data.f_palette[(4u * self->private_impl.f_color_indexing_palette_size)], (1024u - (4u * self->private_impl.f_color_indexing_palette_size)), 0u);
++      v_p = wuffs_base__make_slice_u8(self->private_data.f_palette, (4u * self->private_impl.f_color_indexing_palette_size));
++      while (((uint64_t)(v_p.len)) >= 8u) {
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        v_p.ptr[4u] += v_p.ptr[0u];
++        v_p.ptr[5u] += v_p.ptr[1u];
++        v_p.ptr[6u] += v_p.ptr[2u];
++        v_p.ptr[7u] += v_p.ptr[3u];
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++        v_p = wuffs_base__slice_u8__subslice_i(v_p, 4u);
++      }
++    }
++
++    ok:
++    self->private_impl.p_decode_transform = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_transform = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_transform.v_transform_type = v_transform_type;
++  self->private_data.s_decode_transform.v_tile_size_log2 = v_tile_size_log2;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
++
++  return status;
++}
++
++// -------- func webp.decoder.decode_color_cache_parameters
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__decode_color_cache_parameters(
++    wuffs_webp__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint8_t v_c8 = 0;
++  uint32_t v_use_color_cache = 0;
++  uint32_t v_color_cache_bits = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_color_cache_parameters;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    if (self->private_impl.f_n_bits < 1u) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_0 = *iop_a_src++;
++        v_c8 = t_0;
++      }
++      self->private_impl.f_bits = ((uint32_t)(v_c8));
++      self->private_impl.f_n_bits = 8u;
++    }
++    v_use_color_cache = (self->private_impl.f_bits & 1u);
++    self->private_impl.f_bits >>= 1u;
++    self->private_impl.f_n_bits -= 1u;
++    self->private_impl.f_color_cache_bits = 0u;
++    if (v_use_color_cache != 0u) {
++      if (self->private_impl.f_n_bits < 4u) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_1 = *iop_a_src++;
++          v_c8 = t_1;
++        }
++        if (self->private_impl.f_n_bits >= 4u) {
++          status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
++          goto exit;
++        }
++        self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
++        self->private_impl.f_n_bits += 8u;
++      }
++      v_color_cache_bits = (self->private_impl.f_bits & 15u);
++      self->private_impl.f_bits >>= 4u;
++      self->private_impl.f_n_bits -= 4u;
++      if ((v_color_cache_bits < 1u) || (11u < v_color_cache_bits)) {
++        status = wuffs_base__make_status(wuffs_webp__error__bad_color_cache);
+         goto exit;
+       }
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++      self->private_impl.f_color_cache_bits = v_color_cache_bits;
+     }
+ 
++    goto ok;
+     ok:
+-    self->private_impl.p_decode_frame[0] = 0;
++    self->private_impl.p_decode_color_cache_parameters = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
++  self->private_impl.p_decode_color_cache_parameters = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+   goto exit;
+   exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
++
+   return status;
+ }
+ 
+-// -------- func tga.decoder.do_decode_frame
++// -------- func webp.decoder.decode_hg_table
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ static wuffs_base__status
+-wuffs_tga__decoder__do_decode_frame(
+-    wuffs_tga__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
++wuffs_webp__decoder__decode_hg_table(
++    wuffs_webp__decoder* self,
+     wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts) {
++    uint32_t a_width,
++    wuffs_base__slice_u8 a_workbuf) {
+   wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+   wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-  wuffs_base__pixel_format v_dst_pixfmt = {0};
+-  uint32_t v_dst_bits_per_pixel = 0;
+-  uint64_t v_dst_bytes_per_pixel = 0;
+-  uint32_t v_dst_x = 0;
+-  uint32_t v_dst_y = 0;
+-  wuffs_base__table_u8 v_tab = {0};
+-  wuffs_base__slice_u8 v_dst_palette = {0};
+-  wuffs_base__slice_u8 v_dst = {0};
+-  uint64_t v_dst_start = 0;
+-  wuffs_base__slice_u8 v_src_palette = {0};
+-  uint64_t v_mark = 0;
+-  uint64_t v_num_pixels64 = 0;
+-  uint32_t v_num_pixels32 = 0;
+-  uint32_t v_lit_length = 0;
+-  uint32_t v_run_length = 0;
+-  uint64_t v_num_dst_bytes = 0;
+-  uint32_t v_num_src_bytes = 0;
+-  uint32_t v_c = 0;
+-  uint32_t v_c5 = 0;
++  uint8_t v_c8 = 0;
++  uint32_t v_use_hg_table = 0;
++  uint32_t v_tile_size_log2 = 0;
++  wuffs_base__slice_u8 v_hg_pixels = {0};
++  uint64_t v_n = 0;
++  wuffs_base__slice_u8 v_p = {0};
++  uint32_t v_hg_plus_1 = 0;
+ 
+   const uint8_t* iop_a_src = NULL;
+   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+@@ -59974,276 +75034,155 @@ wuffs_tga__decoder__do_decode_frame(
+     io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0];
++  uint32_t coro_susp_point = self->private_impl.p_decode_hg_table;
+   if (coro_susp_point) {
+-    v_dst_bytes_per_pixel = self->private_data.s_do_decode_frame[0].v_dst_bytes_per_pixel;
+-    v_dst_x = self->private_data.s_do_decode_frame[0].v_dst_x;
+-    v_dst_y = self->private_data.s_do_decode_frame[0].v_dst_y;
+-    v_mark = self->private_data.s_do_decode_frame[0].v_mark;
+-    v_num_pixels32 = self->private_data.s_do_decode_frame[0].v_num_pixels32;
+-    v_lit_length = self->private_data.s_do_decode_frame[0].v_lit_length;
+-    v_run_length = self->private_data.s_do_decode_frame[0].v_run_length;
+-    v_num_dst_bytes = self->private_data.s_do_decode_frame[0].v_num_dst_bytes;
++    v_tile_size_log2 = self->private_data.s_decode_hg_table.v_tile_size_log2;
+   }
+   switch (coro_susp_point) {
+     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-    if (self->private_impl.f_call_sequence == 64u) {
+-    } else if (self->private_impl.f_call_sequence < 64u) {
+-      if (a_src) {
+-        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++    if (self->private_impl.f_n_bits < 1u) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_0 = *iop_a_src++;
++        v_c8 = t_0;
+       }
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      status = wuffs_tga__decoder__do_decode_frame_config(self, NULL, a_src);
+-      if (a_src) {
+-        iop_a_src = a_src->data.ptr + a_src->meta.ri;
++      self->private_impl.f_bits = ((uint32_t)(v_c8));
++      self->private_impl.f_n_bits = 8u;
++    }
++    v_use_hg_table = (self->private_impl.f_bits & 1u);
++    self->private_impl.f_bits >>= 1u;
++    self->private_impl.f_n_bits -= 1u;
++    if (v_use_hg_table == 0u) {
++      self->private_impl.f_overall_n_huffman_groups = 1u;
++      self->private_impl.f_overall_tile_size_log2 = 0u;
++      if ((((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])) > ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u]))) || (((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u])) > ((uint64_t)(a_workbuf.len)))) {
++        status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
++        goto exit;
+       }
+-      if (status.repr) {
+-        goto suspend;
++      v_hg_pixels = wuffs_base__slice_u8__subslice_ij(a_workbuf,
++          ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])),
++          ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u])));
++      if (((uint64_t)(v_hg_pixels.len)) >= 4u) {
++        v_hg_pixels.ptr[0u] = 0u;
++        v_hg_pixels.ptr[1u] = 0u;
++        v_hg_pixels.ptr[2u] = 0u;
++        v_hg_pixels.ptr[3u] = 0u;
+       }
+-    } else {
+-      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
++      status = wuffs_base__make_status(NULL);
+       goto ok;
+     }
+-    if (self->private_impl.f_header_color_map_type != 0u) {
+-      v_src_palette = wuffs_base__make_slice_u8(self->private_data.f_src_palette, 1024);
+-    }
+-    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
+-        wuffs_base__pixel_buffer__pixel_format(a_dst),
+-        wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
+-        wuffs_base__utility__make_pixel_format(self->private_impl.f_src_pixfmt),
+-        v_src_palette,
+-        a_blend);
+-    if ( ! wuffs_base__status__is_ok(&v_status)) {
+-      status = v_status;
+-      if (wuffs_base__status__is_error(&status)) {
+-        goto exit;
+-      } else if (wuffs_base__status__is_suspension(&status)) {
+-        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
++    if (self->private_impl.f_n_bits < 3u) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_1 = *iop_a_src++;
++        v_c8 = t_1;
++      }
++      if (self->private_impl.f_n_bits >= 3u) {
++        status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
+         goto exit;
+       }
+-      goto ok;
++      self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
++      self->private_impl.f_n_bits += 8u;
+     }
+-    v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
+-    v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
+-    if ((v_dst_bits_per_pixel & 7u) != 0u) {
+-      status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
+-      goto exit;
++    v_tile_size_log2 = ((self->private_impl.f_bits & 7u) + 2u);
++    self->private_impl.f_bits >>= 3u;
++    self->private_impl.f_n_bits -= 3u;
++    self->private_impl.f_overall_tile_size_log2 = v_tile_size_log2;
++    if (a_src) {
++      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+     }
+-    v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8u)));
+-    if ((self->private_impl.f_header_image_descriptor & 32u) == 0u) {
+-      v_dst_y = ((uint32_t)(self->private_impl.f_height - 1u));
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++    status = wuffs_webp__decoder__decode_color_cache_parameters(self, a_src);
++    if (a_src) {
++      iop_a_src = a_src->data.ptr + a_src->meta.ri;
+     }
+-    if ((self->private_impl.f_header_image_type & 8u) == 0u) {
+-      v_lit_length = self->private_impl.f_width;
++    if (status.repr) {
++      goto suspend;
++    }
++    if (a_src) {
++      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++    }
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++    status = wuffs_webp__decoder__decode_huffman_groups(self, a_src, 1u);
++    if (a_src) {
++      iop_a_src = a_src->data.ptr + a_src->meta.ri;
++    }
++    if (status.repr) {
++      goto suspend;
+     }
+-    label__resume__continue:;
+     while (true) {
+-      v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
+-      v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024));
+-      while (v_dst_y < self->private_impl.f_height) {
+-        v_dst = wuffs_base__table_u8__row_u32(v_tab, v_dst_y);
+-        v_dst_start = (((uint64_t)(v_dst_x)) * v_dst_bytes_per_pixel);
+-        if (v_dst_start <= ((uint64_t)(v_dst.len))) {
+-          v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_start);
+-        } else {
+-          v_dst = wuffs_base__utility__empty_slice_u8();
+-        }
+-        while (v_dst_x < self->private_impl.f_width) {
+-          if (self->private_impl.f_src_bytes_per_pixel > 0u) {
+-            if (v_lit_length > 0u) {
+-              v_mark = ((uint64_t)(iop_a_src - io0_a_src));
+-              v_num_pixels64 = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(self->private_impl.f_src_bytes_per_pixel)));
+-              v_num_pixels32 = ((uint32_t)(wuffs_base__u64__min(v_num_pixels64, ((uint64_t)(v_lit_length)))));
+-              v_num_dst_bytes = (((uint64_t)(v_num_pixels32)) * v_dst_bytes_per_pixel);
+-              v_num_src_bytes = (v_num_pixels32 * self->private_impl.f_src_bytes_per_pixel);
+-              self->private_data.s_do_decode_frame[0].scratch = v_num_src_bytes;
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-              if (self->private_data.s_do_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
+-                self->private_data.s_do_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
+-                iop_a_src = io2_a_src;
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                goto suspend;
+-              }
+-              iop_a_src += self->private_data.s_do_decode_frame[0].scratch;
+-              wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
+-              if (v_num_dst_bytes <= ((uint64_t)(v_dst.len))) {
+-                v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_num_dst_bytes);
+-              } else {
+-                v_dst = wuffs_base__utility__empty_slice_u8();
+-              }
+-              v_dst_x += v_num_pixels32;
+-              v_lit_length = (((uint32_t)(v_lit_length - v_num_pixels32)) & 65535u);
+-              if (v_lit_length > 0u) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
+-                goto label__resume__continue;
+-              }
+-            } else if (v_run_length > 0u) {
+-              v_run_length -= 1u;
+-              wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, self->private_impl.f_scratch_bytes_per_pixel));
+-              if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) {
+-                v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel);
+-              }
+-              v_dst_x += 1u;
+-            } else {
+-              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
+-                goto label__resume__continue;
+-              }
+-              if (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) < 128u) {
+-                v_lit_length = (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) + 1u);
+-                iop_a_src += 1u;
+-                if ((v_lit_length + v_dst_x) > self->private_impl.f_width) {
+-                  status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding);
+-                  goto exit;
+-                }
+-              } else {
+-                if (self->private_impl.f_src_bytes_per_pixel == 1u) {
+-                  if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
+-                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
+-                    goto label__resume__continue;
+-                  }
+-                  v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127u) + 1u);
+-                  iop_a_src += 1u;
+-                  self->private_data.f_scratch[0u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-                  iop_a_src += 1u;
+-                } else if (self->private_impl.f_src_bytes_per_pixel == 3u) {
+-                  if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
+-                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
+-                    goto label__resume__continue;
+-                  }
+-                  v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127u) + 1u);
+-                  iop_a_src += 1u;
+-                  self->private_data.f_scratch[0u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-                  iop_a_src += 1u;
+-                  self->private_data.f_scratch[1u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-                  iop_a_src += 1u;
+-                  self->private_data.f_scratch[2u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-                  iop_a_src += 1u;
+-                } else {
+-                  if (((uint64_t)(io2_a_src - iop_a_src)) < 5u) {
+-                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
+-                    goto label__resume__continue;
+-                  }
+-                  v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127u) + 1u);
+-                  iop_a_src += 1u;
+-                  self->private_data.f_scratch[0u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-                  iop_a_src += 1u;
+-                  self->private_data.f_scratch[1u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-                  iop_a_src += 1u;
+-                  self->private_data.f_scratch[2u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-                  iop_a_src += 1u;
+-                  self->private_data.f_scratch[3u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-                  iop_a_src += 1u;
+-                }
+-                if ((v_run_length + v_dst_x) > self->private_impl.f_width) {
+-                  status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding);
+-                  goto exit;
+-                }
+-              }
+-            }
+-          } else {
+-            if (v_lit_length > 0u) {
+-              if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
+-                goto label__resume__continue;
+-              }
+-              v_c = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-              iop_a_src += 2u;
+-              v_c5 = (31u & (v_c >> 0u));
+-              self->private_data.f_scratch[0u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
+-              v_c5 = (31u & (v_c >> 5u));
+-              self->private_data.f_scratch[1u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
+-              v_c5 = (31u & (v_c >> 10u));
+-              self->private_data.f_scratch[2u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
+-              self->private_data.f_scratch[3u] = 255u;
+-              wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, 4));
+-              if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) {
+-                v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel);
+-              }
+-              v_dst_x += 1u;
+-              v_lit_length -= 1u;
+-            } else if (v_run_length > 0u) {
+-              v_run_length -= 1u;
+-              wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, self->private_impl.f_scratch_bytes_per_pixel));
+-              if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) {
+-                v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel);
+-              }
+-              v_dst_x += 1u;
+-            } else {
+-              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
+-                goto label__resume__continue;
+-              }
+-              if (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) < 128u) {
+-                v_lit_length = (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) + 1u);
+-                iop_a_src += 1u;
+-                if ((v_lit_length + v_dst_x) > self->private_impl.f_width) {
+-                  status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding);
+-                  goto exit;
+-                }
+-              } else {
+-                if (((uint64_t)(io2_a_src - iop_a_src)) < 3u) {
+-                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
+-                  goto label__resume__continue;
+-                }
+-                v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127u) + 1u);
+-                iop_a_src += 1u;
+-                v_c = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
+-                iop_a_src += 2u;
+-                v_c5 = (31u & (v_c >> 0u));
+-                self->private_data.f_scratch[0u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
+-                v_c5 = (31u & (v_c >> 5u));
+-                self->private_data.f_scratch[1u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
+-                v_c5 = (31u & (v_c >> 10u));
+-                self->private_data.f_scratch[2u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
+-                self->private_data.f_scratch[3u] = 255u;
+-                if ((v_run_length + v_dst_x) > self->private_impl.f_width) {
+-                  status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding);
+-                  goto exit;
+-                }
+-              }
+-            }
+-          }
+-        }
+-        v_dst_x = 0u;
+-        if ((self->private_impl.f_header_image_descriptor & 32u) == 0u) {
+-          v_dst_y -= 1u;
+-        } else {
+-          v_dst_y += 1u;
++      if ((((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])) > ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u]))) || (((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u])) > ((uint64_t)(a_workbuf.len)))) {
++        status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
++        goto exit;
++      }
++      {
++        if (a_src) {
++          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+         }
+-        if ((self->private_impl.f_header_image_type & 8u) == 0u) {
+-          v_lit_length = self->private_impl.f_width;
++        wuffs_base__status t_2 = wuffs_webp__decoder__decode_pixels(self,
++            wuffs_base__slice_u8__subslice_ij(a_workbuf,
++            ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])),
++            ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u]))),
++            a_src,
++            ((a_width + ((((uint32_t)(1u)) << v_tile_size_log2) - 1u)) >> v_tile_size_log2),
++            ((self->private_impl.f_height + ((((uint32_t)(1u)) << v_tile_size_log2) - 1u)) >> v_tile_size_log2),
++            wuffs_base__utility__empty_slice_u8(),
++            0u);
++        v_status = t_2;
++        if (a_src) {
++          iop_a_src = a_src->data.ptr + a_src->meta.ri;
+         }
+       }
+-      break;
++      if (wuffs_base__status__is_ok(&v_status)) {
++        break;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
++    }
++    self->private_impl.f_overall_n_huffman_groups = 1u;
++    if ((((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])) > ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u]))) || (((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u])) > ((uint64_t)(a_workbuf.len)))) {
++      status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
++      goto exit;
++    }
++    v_hg_pixels = wuffs_base__slice_u8__subslice_ij(a_workbuf,
++        ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])),
++        ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u])));
++    v_n = ((uint64_t)((((a_width + ((((uint32_t)(1u)) << v_tile_size_log2) - 1u)) >> v_tile_size_log2) * ((self->private_impl.f_height + ((((uint32_t)(1u)) << v_tile_size_log2) - 1u)) >> v_tile_size_log2) * 4u)));
++    if (v_n > ((uint64_t)(v_hg_pixels.len))) {
++      status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
++      goto exit;
++    }
++    v_p = wuffs_base__slice_u8__subslice_j(v_hg_pixels, v_n);
++    while (((uint64_t)(v_p.len)) >= 4u) {
++      if (v_p.ptr[2u] != 0u) {
++        status = wuffs_base__make_status(wuffs_webp__error__unsupported_number_of_huffman_groups);
++        goto exit;
++      }
++      v_hg_plus_1 = (((uint32_t)(v_p.ptr[1u])) + 1u);
++      if (self->private_impl.f_overall_n_huffman_groups < v_hg_plus_1) {
++        self->private_impl.f_overall_n_huffman_groups = v_hg_plus_1;
++      }
++      v_p = wuffs_base__slice_u8__subslice_i(v_p, 4u);
+     }
+-    self->private_impl.f_call_sequence = 96u;
+ 
+     ok:
+-    self->private_impl.p_do_decode_frame[0] = 0;
++    self->private_impl.p_decode_hg_table = 0;
+     goto exit;
+   }
+ 
+   goto suspend;
+   suspend:
+-  self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_do_decode_frame[0].v_dst_bytes_per_pixel = v_dst_bytes_per_pixel;
+-  self->private_data.s_do_decode_frame[0].v_dst_x = v_dst_x;
+-  self->private_data.s_do_decode_frame[0].v_dst_y = v_dst_y;
+-  self->private_data.s_do_decode_frame[0].v_mark = v_mark;
+-  self->private_data.s_do_decode_frame[0].v_num_pixels32 = v_num_pixels32;
+-  self->private_data.s_do_decode_frame[0].v_lit_length = v_lit_length;
+-  self->private_data.s_do_decode_frame[0].v_run_length = v_run_length;
+-  self->private_data.s_do_decode_frame[0].v_num_dst_bytes = v_num_dst_bytes;
++  self->private_impl.p_decode_hg_table = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_hg_table.v_tile_size_log2 = v_tile_size_log2;
+ 
+   goto exit;
+   exit:
+@@ -60254,12 +75193,117 @@ wuffs_tga__decoder__do_decode_frame(
+   return status;
+ }
+ 
+-// -------- func tga.decoder.frame_dirty_rect
++// -------- func webp.decoder.decode_pixels
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__decode_pixels(
++    wuffs_webp__decoder* self,
++    wuffs_base__slice_u8 a_dst,
++    wuffs_base__io_buffer* a_src,
++    uint32_t a_width,
++    uint32_t a_height,
++    wuffs_base__slice_u8 a_tile_data,
++    uint32_t a_tile_size_log2) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  uint32_t v_i = 0;
++  uint32_t v_n = 0;
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_pixels;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    v_i = 0u;
++    v_n = (((uint32_t)(1u)) << self->private_impl.f_color_cache_bits);
++    while (v_i < v_n) {
++      self->private_data.f_color_cache[v_i] = 0u;
++      v_i += 1u;
++    }
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++    status = wuffs_webp__decoder__decode_pixels_slow(self,
++        a_dst,
++        a_src,
++        a_width,
++        a_height,
++        a_tile_data,
++        a_tile_size_log2);
++    if (status.repr) {
++      goto suspend;
++    }
++
++    goto ok;
++    ok:
++    self->private_impl.p_decode_pixels = 0;
++    goto exit;
++  }
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_pixels = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++
++  goto exit;
++  exit:
++  return status;
++}
++
++// -------- func webp.decoder.swizzle
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_webp__decoder__swizzle(
++    wuffs_webp__decoder* self,
++    wuffs_base__pixel_buffer* a_dst,
++    wuffs_base__slice_u8 a_src,
++    wuffs_base__pixel_blend a_blend) {
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++  wuffs_base__pixel_format v_dst_pixfmt = {0};
++  uint32_t v_dst_bits_per_pixel = 0;
++  uint32_t v_dst_bytes_per_pixel = 0;
++  uint64_t v_dst_bytes_per_row = 0;
++  wuffs_base__slice_u8 v_dst_palette = {0};
++  wuffs_base__table_u8 v_tab = {0};
++  uint64_t v_src_bytes_per_row = 0;
++  wuffs_base__slice_u8 v_dst = {0};
++  uint32_t v_y = 0;
++
++  v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
++      wuffs_base__pixel_buffer__pixel_format(a_dst),
++      wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_palette, 1024)),
++      wuffs_base__utility__make_pixel_format(self->private_impl.f_pixfmt),
++      wuffs_base__utility__empty_slice_u8(),
++      a_blend);
++  if ( ! wuffs_base__status__is_ok(&v_status)) {
++    return wuffs_private_impl__status__ensure_not_a_suspension(v_status);
++  }
++  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
++  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
++  if ((v_dst_bits_per_pixel & 7u) != 0u) {
++    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
++  }
++  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
++  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
++  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_palette, 1024));
++  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
++  v_src_bytes_per_row = ((uint64_t)((self->private_impl.f_width * 4u)));
++  while (v_src_bytes_per_row <= ((uint64_t)(a_src.len))) {
++    v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, v_y);
++    if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
++      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
++    }
++    wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__slice_u8__subslice_j(a_src, v_src_bytes_per_row));
++    a_src = wuffs_base__slice_u8__subslice_i(a_src, v_src_bytes_per_row);
++    v_y += 1u;
++  }
++  return wuffs_base__make_status(NULL);
++}
++
++// -------- func webp.decoder.frame_dirty_rect
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
+-wuffs_tga__decoder__frame_dirty_rect(
+-    const wuffs_tga__decoder* self) {
++wuffs_webp__decoder__frame_dirty_rect(
++    const wuffs_webp__decoder* self) {
+   if (!self) {
+     return wuffs_base__utility__empty_rect_ie_u32();
+   }
+@@ -60275,12 +75319,12 @@ wuffs_tga__decoder__frame_dirty_rect(
+       self->private_impl.f_height);
+ }
+ 
+-// -------- func tga.decoder.num_animation_loops
++// -------- func webp.decoder.num_animation_loops
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_tga__decoder__num_animation_loops(
+-    const wuffs_tga__decoder* self) {
++wuffs_webp__decoder__num_animation_loops(
++    const wuffs_webp__decoder* self) {
+   if (!self) {
+     return 0;
+   }
+@@ -60292,12 +75336,12 @@ wuffs_tga__decoder__num_animation_loops(
+   return 0u;
+ }
+ 
+-// -------- func tga.decoder.num_decoded_frame_configs
++// -------- func webp.decoder.num_decoded_frame_configs
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_tga__decoder__num_decoded_frame_configs(
+-    const wuffs_tga__decoder* self) {
++wuffs_webp__decoder__num_decoded_frame_configs(
++    const wuffs_webp__decoder* self) {
+   if (!self) {
+     return 0;
+   }
+@@ -60312,12 +75356,12 @@ wuffs_tga__decoder__num_decoded_frame_configs(
+   return 0u;
+ }
+ 
+-// -------- func tga.decoder.num_decoded_frames
++// -------- func webp.decoder.num_decoded_frames
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_tga__decoder__num_decoded_frames(
+-    const wuffs_tga__decoder* self) {
++wuffs_webp__decoder__num_decoded_frames(
++    const wuffs_webp__decoder* self) {
+   if (!self) {
+     return 0;
+   }
+@@ -60332,12 +75376,12 @@ wuffs_tga__decoder__num_decoded_frames(
+   return 0u;
+ }
+ 
+-// -------- func tga.decoder.restart_frame
++// -------- func webp.decoder.restart_frame
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_tga__decoder__restart_frame(
+-    wuffs_tga__decoder* self,
++wuffs_webp__decoder__restart_frame(
++    wuffs_webp__decoder* self,
+     uint64_t a_index,
+     uint64_t a_io_position) {
+   if (!self) {
+@@ -60353,31 +75397,30 @@ wuffs_tga__decoder__restart_frame(
+   if (self->private_impl.f_call_sequence < 32u) {
+     return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
+   }
+-  if (a_index != 0u) {
++  if ((a_index != 0u) || (a_io_position != self->private_impl.f_frame_config_io_position)) {
+     return wuffs_base__make_status(wuffs_base__error__bad_argument);
+   }
+   self->private_impl.f_call_sequence = 40u;
+-  self->private_impl.f_frame_config_io_position = a_io_position;
+   return wuffs_base__make_status(NULL);
+ }
+ 
+-// -------- func tga.decoder.set_report_metadata
++// -------- func webp.decoder.set_report_metadata
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_tga__decoder__set_report_metadata(
+-    wuffs_tga__decoder* self,
++wuffs_webp__decoder__set_report_metadata(
++    wuffs_webp__decoder* self,
+     uint32_t a_fourcc,
+     bool a_report) {
+   return wuffs_base__make_empty_struct();
+ }
+ 
+-// -------- func tga.decoder.tell_me_more
++// -------- func webp.decoder.tell_me_more
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_tga__decoder__tell_me_more(
+-    wuffs_tga__decoder* self,
++wuffs_webp__decoder__tell_me_more(
++    wuffs_webp__decoder* self,
+     wuffs_base__io_buffer* a_dst,
+     wuffs_base__more_information* a_minfo,
+     wuffs_base__io_buffer* a_src) {
+@@ -60415,29 +75458,12 @@ wuffs_tga__decoder__tell_me_more(
+   return status;
+ }
+ 
+-// -------- func tga.decoder.history_retain_length
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_tga__decoder__history_retain_length(
+-    const wuffs_tga__decoder* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
+-  }
+-
+-  return 0u;
+-}
+-
+-// -------- func tga.decoder.workbuf_len
++// -------- func webp.decoder.workbuf_len
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_tga__decoder__workbuf_len(
+-    const wuffs_tga__decoder* self) {
++wuffs_webp__decoder__workbuf_len(
++    const wuffs_webp__decoder* self) {
+   if (!self) {
+     return wuffs_base__utility__empty_range_ii_u64();
+   }
+@@ -60446,92 +75472,66 @@ wuffs_tga__decoder__workbuf_len(
+     return wuffs_base__utility__empty_range_ii_u64();
+   }
+ 
+-  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
++  return wuffs_base__utility__make_range_ii_u64(((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[3u])), ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[3u])));
+ }
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA)
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WEBP)
+ 
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP)
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH32)
+ 
+ // ---------------- Status Codes Implementations
+ 
+-const char wuffs_wbmp__error__bad_header[] = "#wbmp: bad header";
+-const char wuffs_wbmp__error__truncated_input[] = "#wbmp: truncated input";
+-
+ // ---------------- Private Consts
+ 
+-// ---------------- Private Initializer Prototypes
++#define WUFFS_XXHASH32__XXH_PRIME32_1 2654435761u
+ 
+-// ---------------- Private Function Prototypes
++#define WUFFS_XXHASH32__XXH_PRIME32_2 2246822519u
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_wbmp__decoder__do_decode_image_config(
+-    wuffs_wbmp__decoder* self,
+-    wuffs_base__image_config* a_dst,
+-    wuffs_base__io_buffer* a_src);
++#define WUFFS_XXHASH32__XXH_PRIME32_3 3266489917u
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_wbmp__decoder__do_decode_frame_config(
+-    wuffs_wbmp__decoder* self,
+-    wuffs_base__frame_config* a_dst,
+-    wuffs_base__io_buffer* a_src);
++#define WUFFS_XXHASH32__XXH_PRIME32_4 668265263u
++
++#define WUFFS_XXHASH32__XXH_PRIME32_5 374761393u
++
++#define WUFFS_XXHASH32__INITIAL_V0 606290984u
++
++#define WUFFS_XXHASH32__INITIAL_V1 2246822519u
++
++#define WUFFS_XXHASH32__INITIAL_V2 0u
++
++#define WUFFS_XXHASH32__INITIAL_V3 1640531535u
++
++// ---------------- Private Initializer Prototypes
++
++// ---------------- Private Function Prototypes
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_wbmp__decoder__do_decode_frame(
+-    wuffs_wbmp__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts);
++static wuffs_base__empty_struct
++wuffs_xxhash32__hasher__up(
++    wuffs_xxhash32__hasher* self,
++    wuffs_base__slice_u8 a_x);
+ 
+ // ---------------- VTables
+ 
+-const wuffs_base__image_decoder__func_ptrs
+-wuffs_wbmp__decoder__func_ptrs_for__wuffs_base__image_decoder = {
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__pixel_buffer*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__pixel_blend,
+-      wuffs_base__slice_u8,
+-      wuffs_base__decode_frame_options*))(&wuffs_wbmp__decoder__decode_frame),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__frame_config*,
+-      wuffs_base__io_buffer*))(&wuffs_wbmp__decoder__decode_frame_config),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__image_config*,
+-      wuffs_base__io_buffer*))(&wuffs_wbmp__decoder__decode_image_config),
+-  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_wbmp__decoder__frame_dirty_rect),
++const wuffs_base__hasher_u32__func_ptrs
++wuffs_xxhash32__hasher__func_ptrs_for__wuffs_base__hasher_u32 = {
++  (uint32_t(*)(const void*))(&wuffs_xxhash32__hasher__checksum_u32),
+   (uint64_t(*)(const void*,
+-      uint32_t))(&wuffs_wbmp__decoder__get_quirk),
+-  (uint64_t(*)(const void*))(&wuffs_wbmp__decoder__history_retain_length),
+-  (uint32_t(*)(const void*))(&wuffs_wbmp__decoder__num_animation_loops),
+-  (uint64_t(*)(const void*))(&wuffs_wbmp__decoder__num_decoded_frame_configs),
+-  (uint64_t(*)(const void*))(&wuffs_wbmp__decoder__num_decoded_frames),
+-  (wuffs_base__status(*)(void*,
+-      uint64_t,
+-      uint64_t))(&wuffs_wbmp__decoder__restart_frame),
++      uint32_t))(&wuffs_xxhash32__hasher__get_quirk),
+   (wuffs_base__status(*)(void*,
+       uint32_t,
+-      uint64_t))(&wuffs_wbmp__decoder__set_quirk),
++      uint64_t))(&wuffs_xxhash32__hasher__set_quirk),
+   (wuffs_base__empty_struct(*)(void*,
+-      uint32_t,
+-      bool))(&wuffs_wbmp__decoder__set_report_metadata),
+-  (wuffs_base__status(*)(void*,
+-      wuffs_base__io_buffer*,
+-      wuffs_base__more_information*,
+-      wuffs_base__io_buffer*))(&wuffs_wbmp__decoder__tell_me_more),
+-  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_wbmp__decoder__workbuf_len),
++      wuffs_base__slice_u8))(&wuffs_xxhash32__hasher__update),
++  (uint32_t(*)(void*,
++      wuffs_base__slice_u8))(&wuffs_xxhash32__hasher__update_u32),
+ };
+ 
+ // ---------------- Initializer Implementations
+ 
+ wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_wbmp__decoder__initialize(
+-    wuffs_wbmp__decoder* self,
++wuffs_xxhash32__hasher__initialize(
++    wuffs_xxhash32__hasher* self,
+     size_t sizeof_star_self,
+     uint64_t wuffs_version,
+     uint32_t options){
+@@ -60569,22 +75569,22 @@ wuffs_wbmp__decoder__initialize(
+   }
+ 
+   self->private_impl.magic = WUFFS_BASE__MAGIC;
+-  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
+-      wuffs_base__image_decoder__vtable_name;
+-  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
+-      (const void*)(&wuffs_wbmp__decoder__func_ptrs_for__wuffs_base__image_decoder);
++  self->private_impl.vtable_for__wuffs_base__hasher_u32.vtable_name =
++      wuffs_base__hasher_u32__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__hasher_u32.function_pointers =
++      (const void*)(&wuffs_xxhash32__hasher__func_ptrs_for__wuffs_base__hasher_u32);
+   return wuffs_base__make_status(NULL);
+ }
+ 
+-wuffs_wbmp__decoder*
+-wuffs_wbmp__decoder__alloc(void) {
+-  wuffs_wbmp__decoder* x =
+-      (wuffs_wbmp__decoder*)(calloc(sizeof(wuffs_wbmp__decoder), 1));
++wuffs_xxhash32__hasher*
++wuffs_xxhash32__hasher__alloc(void) {
++  wuffs_xxhash32__hasher* x =
++      (wuffs_xxhash32__hasher*)(calloc(1, sizeof(wuffs_xxhash32__hasher)));
+   if (!x) {
+     return NULL;
+   }
+-  if (wuffs_wbmp__decoder__initialize(
+-      x, sizeof(wuffs_wbmp__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++  if (wuffs_xxhash32__hasher__initialize(
++      x, sizeof(wuffs_xxhash32__hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
+     free(x);
+     return NULL;
+   }
+@@ -60592,18 +75592,18 @@ wuffs_wbmp__decoder__alloc(void) {
+ }
+ 
+ size_t
+-sizeof__wuffs_wbmp__decoder(void) {
+-  return sizeof(wuffs_wbmp__decoder);
++sizeof__wuffs_xxhash32__hasher(void) {
++  return sizeof(wuffs_xxhash32__hasher);
+ }
+ 
+ // ---------------- Function Implementations
+ 
+-// -------- func wbmp.decoder.get_quirk
++// -------- func xxhash32.hasher.get_quirk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_wbmp__decoder__get_quirk(
+-    const wuffs_wbmp__decoder* self,
++wuffs_xxhash32__hasher__get_quirk(
++    const wuffs_xxhash32__hasher* self,
+     uint32_t a_key) {
+   if (!self) {
+     return 0;
+@@ -60616,12 +75616,12 @@ wuffs_wbmp__decoder__get_quirk(
+   return 0u;
+ }
+ 
+-// -------- func wbmp.decoder.set_quirk
++// -------- func xxhash32.hasher.set_quirk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_wbmp__decoder__set_quirk(
+-    wuffs_wbmp__decoder* self,
++wuffs_xxhash32__hasher__set_quirk(
++    wuffs_xxhash32__hasher* self,
+     uint32_t a_key,
+     uint64_t a_value) {
+   if (!self) {
+@@ -60637,627 +75637,387 @@ wuffs_wbmp__decoder__set_quirk(
+   return wuffs_base__make_status(wuffs_base__error__unsupported_option);
+ }
+ 
+-// -------- func wbmp.decoder.decode_image_config
++// -------- func xxhash32.hasher.update
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_wbmp__decoder__decode_image_config(
+-    wuffs_wbmp__decoder* self,
+-    wuffs_base__image_config* a_dst,
+-    wuffs_base__io_buffer* a_src) {
++WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
++wuffs_xxhash32__hasher__update(
++    wuffs_xxhash32__hasher* self,
++    wuffs_base__slice_u8 a_x) {
+   if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++    return wuffs_base__make_empty_struct();
+   }
+   if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-  if (!a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 1)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+-  }
+-  self->private_impl.active_coroutine = 0;
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-
+-  uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    while (true) {
+-      {
+-        wuffs_base__status t_0 = wuffs_wbmp__decoder__do_decode_image_config(self, a_dst, a_src);
+-        v_status = t_0;
+-      }
+-      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_wbmp__error__truncated_input);
+-        goto exit;
+-      }
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+-    }
+-
+-    ok:
+-    self->private_impl.p_decode_image_config[0] = 0;
+-    goto exit;
+-  }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
+-
+-  goto exit;
+-  exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_empty_struct();
+   }
+-  return status;
+-}
+-
+-// -------- func wbmp.decoder.do_decode_image_config
+-
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_wbmp__decoder__do_decode_image_config(
+-    wuffs_wbmp__decoder* self,
+-    wuffs_base__image_config* a_dst,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  uint8_t v_c = 0;
+-  uint32_t v_i = 0;
+-  uint32_t v_p = 0;
+-
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
++  wuffs_base__slice_u8 v_remaining = {0};
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0];
+-  if (coro_susp_point) {
+-    v_i = self->private_data.s_do_decode_image_config[0].v_i;
+-    v_p = self->private_data.s_do_decode_image_config[0].v_p;
++  if ((self->private_impl.f_length_modulo_u32 == 0u) &&  ! self->private_impl.f_length_overflows_u32) {
++    self->private_impl.f_v0 = 606290984u;
++    self->private_impl.f_v1 = 2246822519u;
++    self->private_impl.f_v2 = 0u;
++    self->private_impl.f_v3 = 1640531535u;
+   }
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    if (self->private_impl.f_call_sequence != 0u) {
+-      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
+-      goto exit;
+-    }
+-    v_i = 0u;
+-    while (v_i < 2u) {
+-      {
+-        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-          goto suspend;
+-        }
+-        uint8_t t_0 = *iop_a_src++;
+-        v_c = t_0;
+-      }
+-      if (v_c != 0u) {
+-        status = wuffs_base__make_status(wuffs_wbmp__error__bad_header);
+-        goto exit;
+-      }
+-      v_i += 1u;
+-    }
+-    v_i = 0u;
+-    while (v_i < 2u) {
+-      v_p = 0u;
+-      while (true) {
+-        {
+-          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
+-          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
+-            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-            goto suspend;
+-          }
+-          uint8_t t_1 = *iop_a_src++;
+-          v_c = t_1;
+-        }
+-        v_p |= ((uint32_t)((v_c & 127u)));
+-        if ((v_c >> 7u) == 0u) {
+-          break;
+-        } else if (v_p > 131071u) {
+-          status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
+-          goto exit;
+-        }
+-        v_p <<= 7u;
+-      }
+-      if (v_i == 0u) {
+-        self->private_impl.f_width = v_p;
+-      } else {
+-        self->private_impl.f_height = v_p;
+-      }
+-      v_i += 1u;
+-    }
+-    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
+-    if (a_dst != NULL) {
+-      wuffs_base__image_config__set(
+-          a_dst,
+-          2198077448u,
+-          0u,
+-          self->private_impl.f_width,
+-          self->private_impl.f_height,
+-          self->private_impl.f_frame_config_io_position,
+-          true);
++  while (((uint64_t)(a_x.len)) > 0u) {
++    v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0u);
++    if (((uint64_t)(a_x.len)) > 16777216u) {
++      v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 16777216u);
++      a_x = wuffs_base__slice_u8__subslice_j(a_x, 16777216u);
+     }
+-    self->private_impl.f_call_sequence = 32u;
+-
+-    goto ok;
+-    ok:
+-    self->private_impl.p_do_decode_image_config[0] = 0;
+-    goto exit;
+-  }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_do_decode_image_config[0].v_i = v_i;
+-  self->private_data.s_do_decode_image_config[0].v_p = v_p;
+-
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++    wuffs_xxhash32__hasher__up(self, a_x);
++    a_x = v_remaining;
+   }
+-
+-  return status;
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-// -------- func wbmp.decoder.decode_frame_config
++// -------- func xxhash32.hasher.update_u32
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_wbmp__decoder__decode_frame_config(
+-    wuffs_wbmp__decoder* self,
+-    wuffs_base__frame_config* a_dst,
+-    wuffs_base__io_buffer* a_src) {
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_xxhash32__hasher__update_u32(
++    wuffs_xxhash32__hasher* self,
++    wuffs_base__slice_u8 a_x) {
+   if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++    return 0;
+   }
+   if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-  if (!a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 2)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
+-  }
+-  self->private_impl.active_coroutine = 0;
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-
+-  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+-
+-    while (true) {
+-      {
+-        wuffs_base__status t_0 = wuffs_wbmp__decoder__do_decode_frame_config(self, a_dst, a_src);
+-        v_status = t_0;
+-      }
+-      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_wbmp__error__truncated_input);
+-        goto exit;
+-      }
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+-    }
+-
+-    ok:
+-    self->private_impl.p_decode_frame_config[0] = 0;
+-    goto exit;
++    return 0;
+   }
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
+-
+-  goto exit;
+-  exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-  }
+-  return status;
++  wuffs_xxhash32__hasher__update(self, a_x);
++  return wuffs_xxhash32__hasher__checksum_u32(self);
+ }
+ 
+-// -------- func wbmp.decoder.do_decode_frame_config
++// -------- func xxhash32.hasher.up
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_wbmp__decoder__do_decode_frame_config(
+-    wuffs_wbmp__decoder* self,
+-    wuffs_base__frame_config* a_dst,
+-    wuffs_base__io_buffer* a_src) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
+-
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++static wuffs_base__empty_struct
++wuffs_xxhash32__hasher__up(
++    wuffs_xxhash32__hasher* self,
++    wuffs_base__slice_u8 a_x) {
++  uint32_t v_new_lmu = 0;
++  uint32_t v_buf_u32 = 0;
++  uint32_t v_buf_len = 0;
++  uint32_t v_v0 = 0;
++  uint32_t v_v1 = 0;
++  uint32_t v_v2 = 0;
++  uint32_t v_v3 = 0;
++  wuffs_base__slice_u8 v_p = {0};
+ 
+-    if (self->private_impl.f_call_sequence == 32u) {
+-    } else if (self->private_impl.f_call_sequence < 32u) {
+-      if (a_src) {
+-        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-      }
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      status = wuffs_wbmp__decoder__do_decode_image_config(self, NULL, a_src);
+-      if (a_src) {
+-        iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-      }
+-      if (status.repr) {
+-        goto suspend;
+-      }
+-    } else if (self->private_impl.f_call_sequence == 40u) {
+-      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
+-        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
+-        goto exit;
+-      }
+-    } else if (self->private_impl.f_call_sequence == 64u) {
+-      self->private_impl.f_call_sequence = 96u;
+-      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-      goto ok;
+-    } else {
+-      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-      goto ok;
++  v_new_lmu = ((uint32_t)(self->private_impl.f_length_modulo_u32 + ((uint32_t)(((uint64_t)(a_x.len))))));
++  self->private_impl.f_length_overflows_u32 = ((v_new_lmu < self->private_impl.f_length_modulo_u32) || self->private_impl.f_length_overflows_u32);
++  self->private_impl.f_length_modulo_u32 = v_new_lmu;
++  while (true) {
++    if (self->private_impl.f_buf_len >= 16u) {
++      v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[0u])) |
++          (((uint32_t)(self->private_impl.f_buf_data[1u])) << 8u) |
++          (((uint32_t)(self->private_impl.f_buf_data[2u])) << 16u) |
++          (((uint32_t)(self->private_impl.f_buf_data[3u])) << 24u));
++      v_v0 = ((uint32_t)(self->private_impl.f_v0 + ((uint32_t)(v_buf_u32 * 2246822519u))));
++      v_v0 = (((uint32_t)(v_v0 << 13u)) | (v_v0 >> 19u));
++      self->private_impl.f_v0 = ((uint32_t)(v_v0 * 2654435761u));
++      v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[4u])) |
++          (((uint32_t)(self->private_impl.f_buf_data[5u])) << 8u) |
++          (((uint32_t)(self->private_impl.f_buf_data[6u])) << 16u) |
++          (((uint32_t)(self->private_impl.f_buf_data[7u])) << 24u));
++      v_v1 = ((uint32_t)(self->private_impl.f_v1 + ((uint32_t)(v_buf_u32 * 2246822519u))));
++      v_v1 = (((uint32_t)(v_v1 << 13u)) | (v_v1 >> 19u));
++      self->private_impl.f_v1 = ((uint32_t)(v_v1 * 2654435761u));
++      v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[8u])) |
++          (((uint32_t)(self->private_impl.f_buf_data[9u])) << 8u) |
++          (((uint32_t)(self->private_impl.f_buf_data[10u])) << 16u) |
++          (((uint32_t)(self->private_impl.f_buf_data[11u])) << 24u));
++      v_v2 = ((uint32_t)(self->private_impl.f_v2 + ((uint32_t)(v_buf_u32 * 2246822519u))));
++      v_v2 = (((uint32_t)(v_v2 << 13u)) | (v_v2 >> 19u));
++      self->private_impl.f_v2 = ((uint32_t)(v_v2 * 2654435761u));
++      v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[12u])) |
++          (((uint32_t)(self->private_impl.f_buf_data[13u])) << 8u) |
++          (((uint32_t)(self->private_impl.f_buf_data[14u])) << 16u) |
++          (((uint32_t)(self->private_impl.f_buf_data[15u])) << 24u));
++      v_v3 = ((uint32_t)(self->private_impl.f_v3 + ((uint32_t)(v_buf_u32 * 2246822519u))));
++      v_v3 = (((uint32_t)(v_v3 << 13u)) | (v_v3 >> 19u));
++      self->private_impl.f_v3 = ((uint32_t)(v_v3 * 2654435761u));
++      self->private_impl.f_buf_len = 0u;
++      break;
+     }
+-    if (a_dst != NULL) {
+-      wuffs_base__frame_config__set(
+-          a_dst,
+-          wuffs_base__utility__make_rect_ie_u32(
+-          0u,
+-          0u,
+-          self->private_impl.f_width,
+-          self->private_impl.f_height),
+-          ((wuffs_base__flicks)(0u)),
+-          0u,
+-          self->private_impl.f_frame_config_io_position,
+-          0u,
+-          true,
+-          false,
+-          4278190080u);
++    if (((uint64_t)(a_x.len)) <= 0u) {
++      return wuffs_base__make_empty_struct();
+     }
+-    self->private_impl.f_call_sequence = 64u;
+-
+-    ok:
+-    self->private_impl.p_do_decode_frame_config[0] = 0;
+-    goto exit;
++    self->private_impl.f_buf_data[self->private_impl.f_buf_len] = a_x.ptr[0u];
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++    self->private_impl.f_buf_len += 1u;
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
+   }
+-
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  v_buf_len = ((uint32_t)(((uint8_t)(self->private_impl.f_buf_len & 15u))));
++  v_v0 = self->private_impl.f_v0;
++  v_v1 = self->private_impl.f_v1;
++  v_v2 = self->private_impl.f_v2;
++  v_v3 = self->private_impl.f_v3;
++  {
++    wuffs_base__slice_u8 i_slice_p = a_x;
++    v_p.ptr = i_slice_p.ptr;
++    v_p.len = 16;
++    const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 16) * 16));
++    while (v_p.ptr < i_end0_p) {
++      v_buf_u32 = (((uint32_t)(v_p.ptr[0u])) |
++          (((uint32_t)(v_p.ptr[1u])) << 8u) |
++          (((uint32_t)(v_p.ptr[2u])) << 16u) |
++          (((uint32_t)(v_p.ptr[3u])) << 24u));
++      v_v0 = ((uint32_t)(v_v0 + ((uint32_t)(v_buf_u32 * 2246822519u))));
++      v_v0 = (((uint32_t)(v_v0 << 13u)) | (v_v0 >> 19u));
++      v_v0 = ((uint32_t)(v_v0 * 2654435761u));
++      v_buf_u32 = (((uint32_t)(v_p.ptr[4u])) |
++          (((uint32_t)(v_p.ptr[5u])) << 8u) |
++          (((uint32_t)(v_p.ptr[6u])) << 16u) |
++          (((uint32_t)(v_p.ptr[7u])) << 24u));
++      v_v1 = ((uint32_t)(v_v1 + ((uint32_t)(v_buf_u32 * 2246822519u))));
++      v_v1 = (((uint32_t)(v_v1 << 13u)) | (v_v1 >> 19u));
++      v_v1 = ((uint32_t)(v_v1 * 2654435761u));
++      v_buf_u32 = (((uint32_t)(v_p.ptr[8u])) |
++          (((uint32_t)(v_p.ptr[9u])) << 8u) |
++          (((uint32_t)(v_p.ptr[10u])) << 16u) |
++          (((uint32_t)(v_p.ptr[11u])) << 24u));
++      v_v2 = ((uint32_t)(v_v2 + ((uint32_t)(v_buf_u32 * 2246822519u))));
++      v_v2 = (((uint32_t)(v_v2 << 13u)) | (v_v2 >> 19u));
++      v_v2 = ((uint32_t)(v_v2 * 2654435761u));
++      v_buf_u32 = (((uint32_t)(v_p.ptr[12u])) |
++          (((uint32_t)(v_p.ptr[13u])) << 8u) |
++          (((uint32_t)(v_p.ptr[14u])) << 16u) |
++          (((uint32_t)(v_p.ptr[15u])) << 24u));
++      v_v3 = ((uint32_t)(v_v3 + ((uint32_t)(v_buf_u32 * 2246822519u))));
++      v_v3 = (((uint32_t)(v_v3 << 13u)) | (v_v3 >> 19u));
++      v_v3 = ((uint32_t)(v_v3 * 2654435761u));
++      v_p.ptr += 16;
++    }
++    v_p.len = 1;
++    const uint8_t* i_end1_p = wuffs_private_impl__ptr_u8_plus_len(i_slice_p.ptr, i_slice_p.len);
++    while (v_p.ptr < i_end1_p) {
++      self->private_impl.f_buf_data[v_buf_len] = v_p.ptr[0u];
++      v_buf_len = ((v_buf_len + 1u) & 15u);
++      v_p.ptr += 1;
++    }
++    v_p.len = 0;
+   }
+-
+-  return status;
++  self->private_impl.f_buf_len = ((uint8_t)(v_buf_len));
++  self->private_impl.f_v0 = v_v0;
++  self->private_impl.f_v1 = v_v1;
++  self->private_impl.f_v2 = v_v2;
++  self->private_impl.f_v3 = v_v3;
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-// -------- func wbmp.decoder.decode_frame
++// -------- func xxhash32.hasher.checksum_u32
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_wbmp__decoder__decode_frame(
+-    wuffs_wbmp__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts) {
++WUFFS_BASE__MAYBE_STATIC uint32_t
++wuffs_xxhash32__hasher__checksum_u32(
++    const wuffs_xxhash32__hasher* self) {
+   if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++    return 0;
+   }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return 0;
++  }
++
++  uint32_t v_ret = 0;
++  uint32_t v_i = 0;
++  uint32_t v_n = 0;
++  uint32_t v_buf_u32 = 0;
++
++  if ((self->private_impl.f_length_modulo_u32 >= 16u) || self->private_impl.f_length_overflows_u32) {
++    v_ret += (((uint32_t)(self->private_impl.f_v0 << 1u)) | (self->private_impl.f_v0 >> 31u));
++    v_ret += (((uint32_t)(self->private_impl.f_v1 << 7u)) | (self->private_impl.f_v1 >> 25u));
++    v_ret += (((uint32_t)(self->private_impl.f_v2 << 12u)) | (self->private_impl.f_v2 >> 20u));
++    v_ret += (((uint32_t)(self->private_impl.f_v3 << 18u)) | (self->private_impl.f_v3 >> 14u));
++    v_ret += self->private_impl.f_length_modulo_u32;
++  } else {
++    v_ret += 374761393u;
++    v_ret += self->private_impl.f_length_modulo_u32;
++  }
++  v_n = 16u;
++  v_n = wuffs_base__u32__min(v_n, ((uint32_t)(self->private_impl.f_buf_len)));
++  if (4u <= v_n) {
++    v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[0u])) |
++        (((uint32_t)(self->private_impl.f_buf_data[1u])) << 8u) |
++        (((uint32_t)(self->private_impl.f_buf_data[2u])) << 16u) |
++        (((uint32_t)(self->private_impl.f_buf_data[3u])) << 24u));
++    v_ret += ((uint32_t)(v_buf_u32 * 3266489917u));
++    v_ret = (((uint32_t)(v_ret << 17u)) | (v_ret >> 15u));
++    v_ret *= 668265263u;
++    v_i = 4u;
++  }
++  if (8u <= v_n) {
++    v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[4u])) |
++        (((uint32_t)(self->private_impl.f_buf_data[5u])) << 8u) |
++        (((uint32_t)(self->private_impl.f_buf_data[6u])) << 16u) |
++        (((uint32_t)(self->private_impl.f_buf_data[7u])) << 24u));
++    v_ret += ((uint32_t)(v_buf_u32 * 3266489917u));
++    v_ret = (((uint32_t)(v_ret << 17u)) | (v_ret >> 15u));
++    v_ret *= 668265263u;
++    v_i = 8u;
+   }
+-  if (!a_dst || !a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  if (12u <= v_n) {
++    v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[8u])) |
++        (((uint32_t)(self->private_impl.f_buf_data[9u])) << 8u) |
++        (((uint32_t)(self->private_impl.f_buf_data[10u])) << 16u) |
++        (((uint32_t)(self->private_impl.f_buf_data[11u])) << 24u));
++    v_ret += ((uint32_t)(v_buf_u32 * 3266489917u));
++    v_ret = (((uint32_t)(v_ret << 17u)) | (v_ret >> 15u));
++    v_ret *= 668265263u;
++    v_i = 12u;
+   }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 3)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  while (v_i < v_n) {
++    v_ret += ((uint32_t)(((uint32_t)(self->private_impl.f_buf_data[v_i])) * 374761393u));
++    v_ret = (((uint32_t)(v_ret << 11u)) | (v_ret >> 21u));
++    v_ret *= 2654435761u;
++    v_i += 1u;
+   }
+-  self->private_impl.active_coroutine = 0;
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+-
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-
+-  uint32_t coro_susp_point = self->private_impl.p_decode_frame[0];
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++  v_ret ^= (v_ret >> 15u);
++  v_ret *= 2246822519u;
++  v_ret ^= (v_ret >> 13u);
++  v_ret *= 3266489917u;
++  v_ret ^= (v_ret >> 16u);
++  return v_ret;
++}
+ 
+-    while (true) {
+-      {
+-        wuffs_base__status t_0 = wuffs_wbmp__decoder__do_decode_frame(self,
+-            a_dst,
+-            a_src,
+-            a_blend,
+-            a_workbuf,
+-            a_opts);
+-        v_status = t_0;
+-      }
+-      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
+-        status = wuffs_base__make_status(wuffs_wbmp__error__truncated_input);
+-        goto exit;
+-      }
+-      status = v_status;
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
+-    }
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH32)
+ 
+-    ok:
+-    self->private_impl.p_decode_frame[0] = 0;
+-    goto exit;
+-  }
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH64)
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
++// ---------------- Status Codes Implementations
+ 
+-  goto exit;
+-  exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-  }
+-  return status;
+-}
++// ---------------- Private Consts
+ 
+-// -------- func wbmp.decoder.do_decode_frame
++#define WUFFS_XXHASH64__XXH_PRIME64_1 11400714785074694791u
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__status
+-wuffs_wbmp__decoder__do_decode_frame(
+-    wuffs_wbmp__decoder* self,
+-    wuffs_base__pixel_buffer* a_dst,
+-    wuffs_base__io_buffer* a_src,
+-    wuffs_base__pixel_blend a_blend,
+-    wuffs_base__slice_u8 a_workbuf,
+-    wuffs_base__decode_frame_options* a_opts) {
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
++#define WUFFS_XXHASH64__XXH_PRIME64_2 14029467366897019727u
+ 
+-  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+-  wuffs_base__pixel_format v_dst_pixfmt = {0};
+-  uint32_t v_dst_bits_per_pixel = 0;
+-  uint64_t v_dst_bytes_per_pixel = 0;
+-  uint64_t v_dst_x_in_bytes = 0;
+-  uint32_t v_dst_x = 0;
+-  uint32_t v_dst_y = 0;
+-  wuffs_base__table_u8 v_tab = {0};
+-  wuffs_base__slice_u8 v_dst = {0};
+-  uint8_t v_src[1] = {0};
+-  uint8_t v_c = 0;
++#define WUFFS_XXHASH64__XXH_PRIME64_3 1609587929392839161u
+ 
+-  const uint8_t* iop_a_src = NULL;
+-  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
+-  if (a_src && a_src->data.ptr) {
+-    io0_a_src = a_src->data.ptr;
+-    io1_a_src = io0_a_src + a_src->meta.ri;
+-    iop_a_src = io1_a_src;
+-    io2_a_src = io0_a_src + a_src->meta.wi;
+-  }
++#define WUFFS_XXHASH64__XXH_PRIME64_4 9650029242287828579u
+ 
+-  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0];
+-  if (coro_susp_point) {
+-    v_dst_bytes_per_pixel = self->private_data.s_do_decode_frame[0].v_dst_bytes_per_pixel;
+-    v_dst_x = self->private_data.s_do_decode_frame[0].v_dst_x;
+-    v_dst_y = self->private_data.s_do_decode_frame[0].v_dst_y;
+-    memcpy(v_src, self->private_data.s_do_decode_frame[0].v_src, sizeof(v_src));
+-    v_c = self->private_data.s_do_decode_frame[0].v_c;
+-  }
+-  switch (coro_susp_point) {
+-    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++#define WUFFS_XXHASH64__XXH_PRIME64_5 2870177450012600261u
+ 
+-    if (self->private_impl.f_call_sequence == 64u) {
+-    } else if (self->private_impl.f_call_sequence < 64u) {
+-      if (a_src) {
+-        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-      }
+-      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
+-      status = wuffs_wbmp__decoder__do_decode_frame_config(self, NULL, a_src);
+-      if (a_src) {
+-        iop_a_src = a_src->data.ptr + a_src->meta.ri;
+-      }
+-      if (status.repr) {
+-        goto suspend;
+-      }
+-    } else {
+-      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
+-      goto ok;
+-    }
+-    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
+-        wuffs_base__pixel_buffer__pixel_format(a_dst),
+-        wuffs_base__pixel_buffer__palette(a_dst),
+-        wuffs_base__utility__make_pixel_format(536870920u),
+-        wuffs_base__utility__empty_slice_u8(),
+-        a_blend);
+-    if ( ! wuffs_base__status__is_ok(&v_status)) {
+-      status = v_status;
+-      if (wuffs_base__status__is_error(&status)) {
+-        goto exit;
+-      } else if (wuffs_base__status__is_suspension(&status)) {
+-        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
+-        goto exit;
+-      }
+-      goto ok;
+-    }
+-    v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
+-    v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
+-    if ((v_dst_bits_per_pixel & 7u) != 0u) {
+-      status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
+-      goto exit;
+-    }
+-    v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8u)));
+-    if (self->private_impl.f_width > 0u) {
+-      v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
+-      while (v_dst_y < self->private_impl.f_height) {
+-        v_dst = wuffs_base__table_u8__row_u32(v_tab, v_dst_y);
+-        v_dst_x = 0u;
+-        while (v_dst_x < self->private_impl.f_width) {
+-          if ((v_dst_x & 7u) == 0u) {
+-            while (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
+-              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
+-              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
+-              v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
+-              v_dst = wuffs_base__table_u8__row_u32(v_tab, v_dst_y);
+-              v_dst_x_in_bytes = (((uint64_t)(v_dst_x)) * v_dst_bytes_per_pixel);
+-              if (v_dst_x_in_bytes <= ((uint64_t)(v_dst.len))) {
+-                v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_x_in_bytes);
+-              }
+-            }
+-            v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
+-            iop_a_src += 1u;
+-          }
+-          if ((v_c & 128u) == 0u) {
+-            v_src[0u] = 0u;
+-          } else {
+-            v_src[0u] = 255u;
+-          }
+-          v_c = ((uint8_t)((((uint32_t)(v_c)) << 1u)));
+-          wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, wuffs_base__utility__empty_slice_u8(), wuffs_base__make_slice_u8(v_src, 1));
+-          if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) {
+-            v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel);
+-          }
+-          v_dst_x += 1u;
+-        }
+-        v_dst_y += 1u;
+-      }
+-    }
+-    self->private_impl.f_call_sequence = 96u;
++#define WUFFS_XXHASH64__INITIAL_V0 6983438078262162902u
+ 
+-    ok:
+-    self->private_impl.p_do_decode_frame[0] = 0;
+-    goto exit;
+-  }
++#define WUFFS_XXHASH64__INITIAL_V1 14029467366897019727u
+ 
+-  goto suspend;
+-  suspend:
+-  self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+-  self->private_data.s_do_decode_frame[0].v_dst_bytes_per_pixel = v_dst_bytes_per_pixel;
+-  self->private_data.s_do_decode_frame[0].v_dst_x = v_dst_x;
+-  self->private_data.s_do_decode_frame[0].v_dst_y = v_dst_y;
+-  memcpy(self->private_data.s_do_decode_frame[0].v_src, v_src, sizeof(v_src));
+-  self->private_data.s_do_decode_frame[0].v_c = v_c;
++#define WUFFS_XXHASH64__INITIAL_V2 0u
+ 
+-  goto exit;
+-  exit:
+-  if (a_src && a_src->data.ptr) {
+-    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+-  }
++#define WUFFS_XXHASH64__INITIAL_V3 7046029288634856825u
+ 
+-  return status;
+-}
++// ---------------- Private Initializer Prototypes
+ 
+-// -------- func wbmp.decoder.frame_dirty_rect
++// ---------------- Private Function Prototypes
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
+-wuffs_wbmp__decoder__frame_dirty_rect(
+-    const wuffs_wbmp__decoder* self) {
+-  if (!self) {
+-    return wuffs_base__utility__empty_rect_ie_u32();
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_rect_ie_u32();
+-  }
++static wuffs_base__empty_struct
++wuffs_xxhash64__hasher__up(
++    wuffs_xxhash64__hasher* self,
++    wuffs_base__slice_u8 a_x);
+ 
+-  return wuffs_base__utility__make_rect_ie_u32(
+-      0u,
+-      0u,
+-      self->private_impl.f_width,
+-      self->private_impl.f_height);
+-}
++// ---------------- VTables
+ 
+-// -------- func wbmp.decoder.num_animation_loops
++const wuffs_base__hasher_u64__func_ptrs
++wuffs_xxhash64__hasher__func_ptrs_for__wuffs_base__hasher_u64 = {
++  (uint64_t(*)(const void*))(&wuffs_xxhash64__hasher__checksum_u64),
++  (uint64_t(*)(const void*,
++      uint32_t))(&wuffs_xxhash64__hasher__get_quirk),
++  (wuffs_base__status(*)(void*,
++      uint32_t,
++      uint64_t))(&wuffs_xxhash64__hasher__set_quirk),
++  (wuffs_base__empty_struct(*)(void*,
++      wuffs_base__slice_u8))(&wuffs_xxhash64__hasher__update),
++  (uint64_t(*)(void*,
++      wuffs_base__slice_u8))(&wuffs_xxhash64__hasher__update_u64),
++};
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_wbmp__decoder__num_animation_loops(
+-    const wuffs_wbmp__decoder* self) {
++// ---------------- Initializer Implementations
++
++wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
++wuffs_xxhash64__hasher__initialize(
++    wuffs_xxhash64__hasher* self,
++    size_t sizeof_star_self,
++    uint64_t wuffs_version,
++    uint32_t options){
+   if (!self) {
+-    return 0;
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
++  if (sizeof(*self) != sizeof_star_self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  }
++  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
++      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
++    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
+   }
+ 
+-  return 0u;
+-}
++  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
++    // The whole point of this if-check is to detect an uninitialized *self.
++    // We disable the warning on GCC. Clang-5.0 does not have this warning.
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
++#endif
++    if (self->private_impl.magic != 0) {
++      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++    }
++#if !defined(__clang__) && defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++  } else {
++    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
++      memset(self, 0, sizeof(*self));
++      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
++    } else {
++      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++    }
++  }
+ 
+-// -------- func wbmp.decoder.num_decoded_frame_configs
++  self->private_impl.magic = WUFFS_BASE__MAGIC;
++  self->private_impl.vtable_for__wuffs_base__hasher_u64.vtable_name =
++      wuffs_base__hasher_u64__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__hasher_u64.function_pointers =
++      (const void*)(&wuffs_xxhash64__hasher__func_ptrs_for__wuffs_base__hasher_u64);
++  return wuffs_base__make_status(NULL);
++}
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_wbmp__decoder__num_decoded_frame_configs(
+-    const wuffs_wbmp__decoder* self) {
+-  if (!self) {
+-    return 0;
++wuffs_xxhash64__hasher*
++wuffs_xxhash64__hasher__alloc(void) {
++  wuffs_xxhash64__hasher* x =
++      (wuffs_xxhash64__hasher*)(calloc(1, sizeof(wuffs_xxhash64__hasher)));
++  if (!x) {
++    return NULL;
+   }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
++  if (wuffs_xxhash64__hasher__initialize(
++      x, sizeof(wuffs_xxhash64__hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++    free(x);
++    return NULL;
+   }
++  return x;
++}
+ 
+-  if (self->private_impl.f_call_sequence > 32u) {
+-    return 1u;
+-  }
+-  return 0u;
++size_t
++sizeof__wuffs_xxhash64__hasher(void) {
++  return sizeof(wuffs_xxhash64__hasher);
+ }
+ 
+-// -------- func wbmp.decoder.num_decoded_frames
++// ---------------- Function Implementations
++
++// -------- func xxhash64.hasher.get_quirk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_wbmp__decoder__num_decoded_frames(
+-    const wuffs_wbmp__decoder* self) {
++wuffs_xxhash64__hasher__get_quirk(
++    const wuffs_xxhash64__hasher* self,
++    uint32_t a_key) {
+   if (!self) {
+     return 0;
+   }
+@@ -61266,20 +76026,17 @@ wuffs_wbmp__decoder__num_decoded_frames(
+     return 0;
+   }
+ 
+-  if (self->private_impl.f_call_sequence > 64u) {
+-    return 1u;
+-  }
+   return 0u;
+ }
+ 
+-// -------- func wbmp.decoder.restart_frame
++// -------- func xxhash64.hasher.set_quirk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_wbmp__decoder__restart_frame(
+-    wuffs_wbmp__decoder* self,
+-    uint64_t a_index,
+-    uint64_t a_io_position) {
++wuffs_xxhash64__hasher__set_quirk(
++    wuffs_xxhash64__hasher* self,
++    uint32_t a_key,
++    uint64_t a_value) {
+   if (!self) {
+     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+@@ -61290,77 +76047,206 @@ wuffs_wbmp__decoder__restart_frame(
+         : wuffs_base__error__initialize_not_called);
+   }
+ 
+-  if (self->private_impl.f_call_sequence < 32u) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
+-  }
+-  if (a_index != 0u) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  self->private_impl.f_call_sequence = 40u;
+-  self->private_impl.f_frame_config_io_position = a_io_position;
+-  return wuffs_base__make_status(NULL);
++  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
+ }
+ 
+-// -------- func wbmp.decoder.set_report_metadata
++// -------- func xxhash64.hasher.update
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_wbmp__decoder__set_report_metadata(
+-    wuffs_wbmp__decoder* self,
+-    uint32_t a_fourcc,
+-    bool a_report) {
++wuffs_xxhash64__hasher__update(
++    wuffs_xxhash64__hasher* self,
++    wuffs_base__slice_u8 a_x) {
++  if (!self) {
++    return wuffs_base__make_empty_struct();
++  }
++  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
++    return wuffs_base__make_empty_struct();
++  }
++
++  if ((self->private_impl.f_length_modulo_u64 == 0u) &&  ! self->private_impl.f_length_overflows_u64) {
++    self->private_impl.f_v0 = 6983438078262162902u;
++    self->private_impl.f_v1 = 14029467366897019727u;
++    self->private_impl.f_v2 = 0u;
++    self->private_impl.f_v3 = 7046029288634856825u;
++  }
++  wuffs_xxhash64__hasher__up(self, a_x);
+   return wuffs_base__make_empty_struct();
+ }
+ 
+-// -------- func wbmp.decoder.tell_me_more
++// -------- func xxhash64.hasher.update_u64
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_wbmp__decoder__tell_me_more(
+-    wuffs_wbmp__decoder* self,
+-    wuffs_base__io_buffer* a_dst,
+-    wuffs_base__more_information* a_minfo,
+-    wuffs_base__io_buffer* a_src) {
++WUFFS_BASE__MAYBE_STATIC uint64_t
++wuffs_xxhash64__hasher__update_u64(
++    wuffs_xxhash64__hasher* self,
++    wuffs_base__slice_u8 a_x) {
+   if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
++    return 0;
+   }
+   if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-  if (!a_dst || !a_src) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__bad_argument);
+-  }
+-  if ((self->private_impl.active_coroutine != 0) &&
+-      (self->private_impl.active_coroutine != 4)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
+-    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++    return 0;
+   }
+-  self->private_impl.active_coroutine = 0;
+-  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  status = wuffs_base__make_status(wuffs_base__error__no_more_information);
+-  goto exit;
++  wuffs_xxhash64__hasher__update(self, a_x);
++  return wuffs_xxhash64__hasher__checksum_u64(self);
++}
+ 
+-  goto ok;
+-  ok:
+-  goto exit;
+-  exit:
+-  if (wuffs_base__status__is_error(&status)) {
+-    self->private_impl.magic = WUFFS_BASE__DISABLED;
++// -------- func xxhash64.hasher.up
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__empty_struct
++wuffs_xxhash64__hasher__up(
++    wuffs_xxhash64__hasher* self,
++    wuffs_base__slice_u8 a_x) {
++  uint64_t v_new_lmu = 0;
++  uint64_t v_buf_u64 = 0;
++  uint32_t v_buf_len = 0;
++  uint64_t v_v0 = 0;
++  uint64_t v_v1 = 0;
++  uint64_t v_v2 = 0;
++  uint64_t v_v3 = 0;
++  wuffs_base__slice_u8 v_p = {0};
++
++  v_new_lmu = ((uint64_t)(self->private_impl.f_length_modulo_u64 + ((uint64_t)(a_x.len))));
++  self->private_impl.f_length_overflows_u64 = ((v_new_lmu < self->private_impl.f_length_modulo_u64) || self->private_impl.f_length_overflows_u64);
++  self->private_impl.f_length_modulo_u64 = v_new_lmu;
++  while (true) {
++    if (self->private_impl.f_buf_len >= 32u) {
++      v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[0u])) |
++          (((uint64_t)(self->private_impl.f_buf_data[1u])) << 8u) |
++          (((uint64_t)(self->private_impl.f_buf_data[2u])) << 16u) |
++          (((uint64_t)(self->private_impl.f_buf_data[3u])) << 24u) |
++          (((uint64_t)(self->private_impl.f_buf_data[4u])) << 32u) |
++          (((uint64_t)(self->private_impl.f_buf_data[5u])) << 40u) |
++          (((uint64_t)(self->private_impl.f_buf_data[6u])) << 48u) |
++          (((uint64_t)(self->private_impl.f_buf_data[7u])) << 56u));
++      v_v0 = ((uint64_t)(self->private_impl.f_v0 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
++      v_v0 = (((uint64_t)(v_v0 << 31u)) | (v_v0 >> 33u));
++      self->private_impl.f_v0 = ((uint64_t)(v_v0 * 11400714785074694791u));
++      v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[8u])) |
++          (((uint64_t)(self->private_impl.f_buf_data[9u])) << 8u) |
++          (((uint64_t)(self->private_impl.f_buf_data[10u])) << 16u) |
++          (((uint64_t)(self->private_impl.f_buf_data[11u])) << 24u) |
++          (((uint64_t)(self->private_impl.f_buf_data[12u])) << 32u) |
++          (((uint64_t)(self->private_impl.f_buf_data[13u])) << 40u) |
++          (((uint64_t)(self->private_impl.f_buf_data[14u])) << 48u) |
++          (((uint64_t)(self->private_impl.f_buf_data[15u])) << 56u));
++      v_v1 = ((uint64_t)(self->private_impl.f_v1 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
++      v_v1 = (((uint64_t)(v_v1 << 31u)) | (v_v1 >> 33u));
++      self->private_impl.f_v1 = ((uint64_t)(v_v1 * 11400714785074694791u));
++      v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[16u])) |
++          (((uint64_t)(self->private_impl.f_buf_data[17u])) << 8u) |
++          (((uint64_t)(self->private_impl.f_buf_data[18u])) << 16u) |
++          (((uint64_t)(self->private_impl.f_buf_data[19u])) << 24u) |
++          (((uint64_t)(self->private_impl.f_buf_data[20u])) << 32u) |
++          (((uint64_t)(self->private_impl.f_buf_data[21u])) << 40u) |
++          (((uint64_t)(self->private_impl.f_buf_data[22u])) << 48u) |
++          (((uint64_t)(self->private_impl.f_buf_data[23u])) << 56u));
++      v_v2 = ((uint64_t)(self->private_impl.f_v2 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
++      v_v2 = (((uint64_t)(v_v2 << 31u)) | (v_v2 >> 33u));
++      self->private_impl.f_v2 = ((uint64_t)(v_v2 * 11400714785074694791u));
++      v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[24u])) |
++          (((uint64_t)(self->private_impl.f_buf_data[25u])) << 8u) |
++          (((uint64_t)(self->private_impl.f_buf_data[26u])) << 16u) |
++          (((uint64_t)(self->private_impl.f_buf_data[27u])) << 24u) |
++          (((uint64_t)(self->private_impl.f_buf_data[28u])) << 32u) |
++          (((uint64_t)(self->private_impl.f_buf_data[29u])) << 40u) |
++          (((uint64_t)(self->private_impl.f_buf_data[30u])) << 48u) |
++          (((uint64_t)(self->private_impl.f_buf_data[31u])) << 56u));
++      v_v3 = ((uint64_t)(self->private_impl.f_v3 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
++      v_v3 = (((uint64_t)(v_v3 << 31u)) | (v_v3 >> 33u));
++      self->private_impl.f_v3 = ((uint64_t)(v_v3 * 11400714785074694791u));
++      self->private_impl.f_buf_len = 0u;
++      break;
++    }
++    if (((uint64_t)(a_x.len)) <= 0u) {
++      return wuffs_base__make_empty_struct();
++    }
++    self->private_impl.f_buf_data[self->private_impl.f_buf_len] = a_x.ptr[0u];
++    self->private_impl.f_buf_len += 1u;
++    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
++  }
++  v_buf_len = (self->private_impl.f_buf_len & 31u);
++  v_v0 = self->private_impl.f_v0;
++  v_v1 = self->private_impl.f_v1;
++  v_v2 = self->private_impl.f_v2;
++  v_v3 = self->private_impl.f_v3;
++  {
++    wuffs_base__slice_u8 i_slice_p = a_x;
++    v_p.ptr = i_slice_p.ptr;
++    v_p.len = 32;
++    const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32));
++    while (v_p.ptr < i_end0_p) {
++      v_buf_u64 = (((uint64_t)(v_p.ptr[0u])) |
++          (((uint64_t)(v_p.ptr[1u])) << 8u) |
++          (((uint64_t)(v_p.ptr[2u])) << 16u) |
++          (((uint64_t)(v_p.ptr[3u])) << 24u) |
++          (((uint64_t)(v_p.ptr[4u])) << 32u) |
++          (((uint64_t)(v_p.ptr[5u])) << 40u) |
++          (((uint64_t)(v_p.ptr[6u])) << 48u) |
++          (((uint64_t)(v_p.ptr[7u])) << 56u));
++      v_v0 = ((uint64_t)(v_v0 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
++      v_v0 = (((uint64_t)(v_v0 << 31u)) | (v_v0 >> 33u));
++      v_v0 = ((uint64_t)(v_v0 * 11400714785074694791u));
++      v_buf_u64 = (((uint64_t)(v_p.ptr[8u])) |
++          (((uint64_t)(v_p.ptr[9u])) << 8u) |
++          (((uint64_t)(v_p.ptr[10u])) << 16u) |
++          (((uint64_t)(v_p.ptr[11u])) << 24u) |
++          (((uint64_t)(v_p.ptr[12u])) << 32u) |
++          (((uint64_t)(v_p.ptr[13u])) << 40u) |
++          (((uint64_t)(v_p.ptr[14u])) << 48u) |
++          (((uint64_t)(v_p.ptr[15u])) << 56u));
++      v_v1 = ((uint64_t)(v_v1 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
++      v_v1 = (((uint64_t)(v_v1 << 31u)) | (v_v1 >> 33u));
++      v_v1 = ((uint64_t)(v_v1 * 11400714785074694791u));
++      v_buf_u64 = (((uint64_t)(v_p.ptr[16u])) |
++          (((uint64_t)(v_p.ptr[17u])) << 8u) |
++          (((uint64_t)(v_p.ptr[18u])) << 16u) |
++          (((uint64_t)(v_p.ptr[19u])) << 24u) |
++          (((uint64_t)(v_p.ptr[20u])) << 32u) |
++          (((uint64_t)(v_p.ptr[21u])) << 40u) |
++          (((uint64_t)(v_p.ptr[22u])) << 48u) |
++          (((uint64_t)(v_p.ptr[23u])) << 56u));
++      v_v2 = ((uint64_t)(v_v2 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
++      v_v2 = (((uint64_t)(v_v2 << 31u)) | (v_v2 >> 33u));
++      v_v2 = ((uint64_t)(v_v2 * 11400714785074694791u));
++      v_buf_u64 = (((uint64_t)(v_p.ptr[24u])) |
++          (((uint64_t)(v_p.ptr[25u])) << 8u) |
++          (((uint64_t)(v_p.ptr[26u])) << 16u) |
++          (((uint64_t)(v_p.ptr[27u])) << 24u) |
++          (((uint64_t)(v_p.ptr[28u])) << 32u) |
++          (((uint64_t)(v_p.ptr[29u])) << 40u) |
++          (((uint64_t)(v_p.ptr[30u])) << 48u) |
++          (((uint64_t)(v_p.ptr[31u])) << 56u));
++      v_v3 = ((uint64_t)(v_v3 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
++      v_v3 = (((uint64_t)(v_v3 << 31u)) | (v_v3 >> 33u));
++      v_v3 = ((uint64_t)(v_v3 * 11400714785074694791u));
++      v_p.ptr += 32;
++    }
++    v_p.len = 1;
++    const uint8_t* i_end1_p = wuffs_private_impl__ptr_u8_plus_len(i_slice_p.ptr, i_slice_p.len);
++    while (v_p.ptr < i_end1_p) {
++      self->private_impl.f_buf_data[v_buf_len] = v_p.ptr[0u];
++      v_buf_len = ((v_buf_len + 1u) & 31u);
++      v_p.ptr += 1;
++    }
++    v_p.len = 0;
+   }
+-  return status;
++  self->private_impl.f_buf_len = v_buf_len;
++  self->private_impl.f_v0 = v_v0;
++  self->private_impl.f_v1 = v_v1;
++  self->private_impl.f_v2 = v_v2;
++  self->private_impl.f_v3 = v_v3;
++  return wuffs_base__make_empty_struct();
+ }
+ 
+-// -------- func wbmp.decoder.history_retain_length
++// -------- func xxhash64.hasher.checksum_u64
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_wbmp__decoder__history_retain_length(
+-    const wuffs_wbmp__decoder* self) {
++wuffs_xxhash64__hasher__checksum_u64(
++    const wuffs_xxhash64__hasher* self) {
+   if (!self) {
+     return 0;
+   }
+@@ -61369,83 +76255,307 @@ wuffs_wbmp__decoder__history_retain_length(
+     return 0;
+   }
+ 
+-  return 0u;
+-}
+-
+-// -------- func wbmp.decoder.workbuf_len
++  uint64_t v_ret = 0;
++  uint64_t v_v0 = 0;
++  uint64_t v_v1 = 0;
++  uint64_t v_v2 = 0;
++  uint64_t v_v3 = 0;
++  uint32_t v_i = 0;
++  uint32_t v_i8 = 0;
++  uint32_t v_n = 0;
++  uint32_t v_buf_u32 = 0;
++  uint64_t v_buf_u64 = 0;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
+-wuffs_wbmp__decoder__workbuf_len(
+-    const wuffs_wbmp__decoder* self) {
+-  if (!self) {
+-    return wuffs_base__utility__empty_range_ii_u64();
++  if ((self->private_impl.f_length_modulo_u64 >= 32u) || self->private_impl.f_length_overflows_u64) {
++    v_ret += (((uint64_t)(self->private_impl.f_v0 << 1u)) | (self->private_impl.f_v0 >> 63u));
++    v_ret += (((uint64_t)(self->private_impl.f_v1 << 7u)) | (self->private_impl.f_v1 >> 57u));
++    v_ret += (((uint64_t)(self->private_impl.f_v2 << 12u)) | (self->private_impl.f_v2 >> 52u));
++    v_ret += (((uint64_t)(self->private_impl.f_v3 << 18u)) | (self->private_impl.f_v3 >> 46u));
++    v_v0 = ((uint64_t)(self->private_impl.f_v0 * 14029467366897019727u));
++    v_v0 = (((uint64_t)(v_v0 << 31u)) | (v_v0 >> 33u));
++    v_v0 *= 11400714785074694791u;
++    v_v1 = ((uint64_t)(self->private_impl.f_v1 * 14029467366897019727u));
++    v_v1 = (((uint64_t)(v_v1 << 31u)) | (v_v1 >> 33u));
++    v_v1 *= 11400714785074694791u;
++    v_v2 = ((uint64_t)(self->private_impl.f_v2 * 14029467366897019727u));
++    v_v2 = (((uint64_t)(v_v2 << 31u)) | (v_v2 >> 33u));
++    v_v2 *= 11400714785074694791u;
++    v_v3 = ((uint64_t)(self->private_impl.f_v3 * 14029467366897019727u));
++    v_v3 = (((uint64_t)(v_v3 << 31u)) | (v_v3 >> 33u));
++    v_v3 *= 11400714785074694791u;
++    v_ret = ((uint64_t)(((uint64_t)((v_ret ^ v_v0) * 11400714785074694791u)) + 9650029242287828579u));
++    v_ret = ((uint64_t)(((uint64_t)((v_ret ^ v_v1) * 11400714785074694791u)) + 9650029242287828579u));
++    v_ret = ((uint64_t)(((uint64_t)((v_ret ^ v_v2) * 11400714785074694791u)) + 9650029242287828579u));
++    v_ret = ((uint64_t)(((uint64_t)((v_ret ^ v_v3) * 11400714785074694791u)) + 9650029242287828579u));
++    v_ret += self->private_impl.f_length_modulo_u64;
++  } else {
++    v_ret += 2870177450012600261u;
++    v_ret += self->private_impl.f_length_modulo_u64;
+   }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return wuffs_base__utility__empty_range_ii_u64();
++  v_n = 32u;
++  v_n = wuffs_base__u32__min(v_n, self->private_impl.f_buf_len);
++  if (8u <= v_n) {
++    v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[0u])) |
++        (((uint64_t)(self->private_impl.f_buf_data[1u])) << 8u) |
++        (((uint64_t)(self->private_impl.f_buf_data[2u])) << 16u) |
++        (((uint64_t)(self->private_impl.f_buf_data[3u])) << 24u) |
++        (((uint64_t)(self->private_impl.f_buf_data[4u])) << 32u) |
++        (((uint64_t)(self->private_impl.f_buf_data[5u])) << 40u) |
++        (((uint64_t)(self->private_impl.f_buf_data[6u])) << 48u) |
++        (((uint64_t)(self->private_impl.f_buf_data[7u])) << 56u));
++    v_buf_u64 *= 14029467366897019727u;
++    v_buf_u64 = (((uint64_t)(v_buf_u64 << 31u)) | (v_buf_u64 >> 33u));
++    v_buf_u64 *= 11400714785074694791u;
++    v_ret ^= v_buf_u64;
++    v_ret = (((uint64_t)(v_ret << 27u)) | (v_ret >> 37u));
++    v_ret *= 11400714785074694791u;
++    v_ret += 9650029242287828579u;
++    v_i = 8u;
+   }
+-
+-  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
++  if (16u <= v_n) {
++    v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[8u])) |
++        (((uint64_t)(self->private_impl.f_buf_data[9u])) << 8u) |
++        (((uint64_t)(self->private_impl.f_buf_data[10u])) << 16u) |
++        (((uint64_t)(self->private_impl.f_buf_data[11u])) << 24u) |
++        (((uint64_t)(self->private_impl.f_buf_data[12u])) << 32u) |
++        (((uint64_t)(self->private_impl.f_buf_data[13u])) << 40u) |
++        (((uint64_t)(self->private_impl.f_buf_data[14u])) << 48u) |
++        (((uint64_t)(self->private_impl.f_buf_data[15u])) << 56u));
++    v_buf_u64 *= 14029467366897019727u;
++    v_buf_u64 = (((uint64_t)(v_buf_u64 << 31u)) | (v_buf_u64 >> 33u));
++    v_buf_u64 *= 11400714785074694791u;
++    v_ret ^= v_buf_u64;
++    v_ret = (((uint64_t)(v_ret << 27u)) | (v_ret >> 37u));
++    v_ret *= 11400714785074694791u;
++    v_ret += 9650029242287828579u;
++    v_i = 16u;
++  }
++  if (24u <= v_n) {
++    v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[16u])) |
++        (((uint64_t)(self->private_impl.f_buf_data[17u])) << 8u) |
++        (((uint64_t)(self->private_impl.f_buf_data[18u])) << 16u) |
++        (((uint64_t)(self->private_impl.f_buf_data[19u])) << 24u) |
++        (((uint64_t)(self->private_impl.f_buf_data[20u])) << 32u) |
++        (((uint64_t)(self->private_impl.f_buf_data[21u])) << 40u) |
++        (((uint64_t)(self->private_impl.f_buf_data[22u])) << 48u) |
++        (((uint64_t)(self->private_impl.f_buf_data[23u])) << 56u));
++    v_buf_u64 *= 14029467366897019727u;
++    v_buf_u64 = (((uint64_t)(v_buf_u64 << 31u)) | (v_buf_u64 >> 33u));
++    v_buf_u64 *= 11400714785074694791u;
++    v_ret ^= v_buf_u64;
++    v_ret = (((uint64_t)(v_ret << 27u)) | (v_ret >> 37u));
++    v_ret *= 11400714785074694791u;
++    v_ret += 9650029242287828579u;
++    v_i = 24u;
++  }
++  if ((v_n & 4u) != 0u) {
++    v_i8 = (v_i & 24u);
++    v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[(v_i8 + 0u)])) |
++        (((uint32_t)(self->private_impl.f_buf_data[(v_i8 + 1u)])) << 8u) |
++        (((uint32_t)(self->private_impl.f_buf_data[(v_i8 + 2u)])) << 16u) |
++        (((uint32_t)(self->private_impl.f_buf_data[(v_i8 + 3u)])) << 24u));
++    v_ret ^= ((uint64_t)(((uint64_t)(v_buf_u32)) * 11400714785074694791u));
++    v_ret = (((uint64_t)(v_ret << 23u)) | (v_ret >> 41u));
++    v_ret *= 14029467366897019727u;
++    v_ret += 1609587929392839161u;
++    v_i = (v_i8 + 4u);
++  }
++  while (v_i < v_n) {
++    v_ret ^= ((uint64_t)(((uint64_t)(self->private_impl.f_buf_data[v_i])) * 2870177450012600261u));
++    v_ret = (((uint64_t)(v_ret << 11u)) | (v_ret >> 53u));
++    v_ret *= 11400714785074694791u;
++    v_i += 1u;
++  }
++  v_ret ^= (v_ret >> 33u);
++  v_ret *= 14029467366897019727u;
++  v_ret ^= (v_ret >> 29u);
++  v_ret *= 1609587929392839161u;
++  v_ret ^= (v_ret >> 32u);
++  return ((uint64_t)(v_ret));
+ }
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP)
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH64)
+ 
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH32)
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XZ)
+ 
+ // ---------------- Status Codes Implementations
+ 
+-// ---------------- Private Consts
++const char wuffs_xz__error__bad_bcj_offset[] = "#xz: bad BCJ offset";
++const char wuffs_xz__error__bad_block_header[] = "#xz: bad block header";
++const char wuffs_xz__error__bad_checksum[] = "#xz: bad checksum";
++const char wuffs_xz__error__bad_filter[] = "#xz: bad filter";
++const char wuffs_xz__error__bad_footer[] = "#xz: bad footer";
++const char wuffs_xz__error__bad_header[] = "#xz: bad header";
++const char wuffs_xz__error__bad_header_concatenated_stream[] = "#xz: bad header (concatenated stream)";
++const char wuffs_xz__error__bad_index[] = "#xz: bad index";
++const char wuffs_xz__error__bad_padding[] = "#xz: bad padding";
++const char wuffs_xz__error__truncated_input[] = "#xz: truncated input";
++const char wuffs_xz__error__unsupported_checksum_algorithm[] = "#xz: unsupported checksum algorithm";
++const char wuffs_xz__error__unsupported_filter[] = "#xz: unsupported filter";
++const char wuffs_xz__error__unsupported_filter_combination[] = "#xz: unsupported filter combination";
++const char wuffs_xz__error__internal_error_inconsistent_bcj_filter_state[] = "#xz: internal error: inconsistent BCJ filter state";
+ 
+-#define WUFFS_XXHASH32__XXH_PRIME32_1 2654435761
++// ---------------- Private Consts
+ 
+-#define WUFFS_XXHASH32__XXH_PRIME32_2 2246822519
++static const bool
++WUFFS_XZ__FILTER_04_X86_MASK_TO_ALLOWED_STATUS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  1u, 1u, 1u, 0u, 1u, 0u, 0u, 0u,
++};
+ 
+-#define WUFFS_XXHASH32__XXH_PRIME32_3 3266489917
++static const uint8_t
++WUFFS_XZ__FILTER_04_X86_MASK_TO_BIT_NUM[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 1u, 2u, 2u, 3u, 3u, 3u, 3u,
++};
+ 
+-#define WUFFS_XXHASH32__XXH_PRIME32_4 668265263
++static const uint32_t
++WUFFS_XZ__FILTER_04_X86_MASK_TO_XOR_OPERAND[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  4294967295u, 16777215u, 65535u, 65535u, 255u, 255u, 255u, 255u,
++};
+ 
+-#define WUFFS_XXHASH32__XXH_PRIME32_5 374761393
++static const uint8_t
++WUFFS_XZ__FILTER_06_IA64_BRANCH_TABLE[32] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
++  4u, 4u, 6u, 6u, 0u, 0u, 7u, 7u,
++  4u, 4u, 0u, 0u, 4u, 4u, 0u, 0u,
++};
+ 
+-#define WUFFS_XXHASH32__INITIAL_V0 606290984
++#define WUFFS_XZ__QUIRKS_BASE 2021322752u
+ 
+-#define WUFFS_XXHASH32__INITIAL_V1 2246822519
++static const uint8_t
++WUFFS_XZ__CHECKSUM_LENGTH[4] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 4u, 8u, 32u,
++};
+ 
+-#define WUFFS_XXHASH32__INITIAL_V2 0
++static const uint8_t
++WUFFS_XZ__ZEROES[3] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 0u, 0u,
++};
+ 
+-#define WUFFS_XXHASH32__INITIAL_V3 1640531535
++static const uint8_t
++WUFFS_XZ__BCJ_OFFSET_ALIGNMENT[12] WUFFS_BASE__POTENTIALLY_UNUSED = {
++  0u, 0u, 0u, 0u, 1u, 4u, 16u, 4u,
++  2u, 4u, 4u, 2u,
++};
+ 
+ // ---------------- Private Initializer Prototypes
+ 
+ // ---------------- Private Function Prototypes
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_xxhash32__hasher__up(
+-    wuffs_xxhash32__hasher* self,
+-    wuffs_base__slice_u8 a_x);
++static uint8_t
++wuffs_xz__decoder__apply_non_final_filters(
++    wuffs_xz__decoder* self,
++    wuffs_base__slice_u8 a_dst_slice);
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint8_t
++wuffs_xz__decoder__apply_non_final_filters__choosy_default(
++    wuffs_xz__decoder* self,
++    wuffs_base__slice_u8 a_dst_slice);
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint8_t
++wuffs_xz__decoder__apply_filter_04_x86(
++    wuffs_xz__decoder* self,
++    wuffs_base__slice_u8 a_dst_slice);
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint8_t
++wuffs_xz__decoder__apply_filter_05_powerpc(
++    wuffs_xz__decoder* self,
++    wuffs_base__slice_u8 a_dst_slice);
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint8_t
++wuffs_xz__decoder__apply_filter_06_ia64(
++    wuffs_xz__decoder* self,
++    wuffs_base__slice_u8 a_dst_slice);
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint8_t
++wuffs_xz__decoder__apply_filter_07_arm(
++    wuffs_xz__decoder* self,
++    wuffs_base__slice_u8 a_dst_slice);
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint8_t
++wuffs_xz__decoder__apply_filter_08_armthumb(
++    wuffs_xz__decoder* self,
++    wuffs_base__slice_u8 a_dst_slice);
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint8_t
++wuffs_xz__decoder__apply_filter_09_sparc(
++    wuffs_xz__decoder* self,
++    wuffs_base__slice_u8 a_dst_slice);
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint8_t
++wuffs_xz__decoder__apply_filter_0a_arm64(
++    wuffs_xz__decoder* self,
++    wuffs_base__slice_u8 a_dst_slice);
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint8_t
++wuffs_xz__decoder__apply_filter_0b_riscv(
++    wuffs_xz__decoder* self,
++    wuffs_base__slice_u8 a_dst_slice);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_xz__decoder__do_transform_io(
++    wuffs_xz__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_xz__decoder__decode_block_header_with_padding(
++    wuffs_xz__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_xz__decoder__decode_block_header_sans_padding(
++    wuffs_xz__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_xz__decoder__verify_index(
++    wuffs_xz__decoder* self,
++    wuffs_base__io_buffer* a_src);
++
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_xz__decoder__verify_footer(
++    wuffs_xz__decoder* self,
++    wuffs_base__io_buffer* a_src);
+ 
+ // ---------------- VTables
+ 
+-const wuffs_base__hasher_u32__func_ptrs
+-wuffs_xxhash32__hasher__func_ptrs_for__wuffs_base__hasher_u32 = {
+-  (uint32_t(*)(const void*))(&wuffs_xxhash32__hasher__checksum_u32),
++const wuffs_base__io_transformer__func_ptrs
++wuffs_xz__decoder__func_ptrs_for__wuffs_base__io_transformer = {
++  (wuffs_base__optional_u63(*)(const void*))(&wuffs_xz__decoder__dst_history_retain_length),
+   (uint64_t(*)(const void*,
+-      uint32_t))(&wuffs_xxhash32__hasher__get_quirk),
++      uint32_t))(&wuffs_xz__decoder__get_quirk),
+   (wuffs_base__status(*)(void*,
+       uint32_t,
+-      uint64_t))(&wuffs_xxhash32__hasher__set_quirk),
+-  (wuffs_base__empty_struct(*)(void*,
+-      wuffs_base__slice_u8))(&wuffs_xxhash32__hasher__update),
+-  (uint32_t(*)(void*,
+-      wuffs_base__slice_u8))(&wuffs_xxhash32__hasher__update_u32),
++      uint64_t))(&wuffs_xz__decoder__set_quirk),
++  (wuffs_base__status(*)(void*,
++      wuffs_base__io_buffer*,
++      wuffs_base__io_buffer*,
++      wuffs_base__slice_u8))(&wuffs_xz__decoder__transform_io),
++  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_xz__decoder__workbuf_len),
+ };
+ 
+ // ---------------- Initializer Implementations
+ 
+ wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_xxhash32__hasher__initialize(
+-    wuffs_xxhash32__hasher* self,
++wuffs_xz__decoder__initialize(
++    wuffs_xz__decoder* self,
+     size_t sizeof_star_self,
+     uint64_t wuffs_version,
+     uint32_t options){
+@@ -61482,23 +76592,53 @@ wuffs_xxhash32__hasher__initialize(
+     }
+   }
+ 
++  self->private_impl.choosy_apply_non_final_filters = &wuffs_xz__decoder__apply_non_final_filters__choosy_default;
++
++  {
++    wuffs_base__status z = wuffs_crc32__ieee_hasher__initialize(
++        &self->private_data.f_crc32, sizeof(self->private_data.f_crc32), WUFFS_VERSION, options);
++    if (z.repr) {
++      return z;
++    }
++  }
++  {
++    wuffs_base__status z = wuffs_crc64__ecma_hasher__initialize(
++        &self->private_data.f_crc64, sizeof(self->private_data.f_crc64), WUFFS_VERSION, options);
++    if (z.repr) {
++      return z;
++    }
++  }
++  {
++    wuffs_base__status z = wuffs_sha256__hasher__initialize(
++        &self->private_data.f_sha256, sizeof(self->private_data.f_sha256), WUFFS_VERSION, options);
++    if (z.repr) {
++      return z;
++    }
++  }
++  {
++    wuffs_base__status z = wuffs_lzma__decoder__initialize(
++        &self->private_data.f_lzma, sizeof(self->private_data.f_lzma), WUFFS_VERSION, options);
++    if (z.repr) {
++      return z;
++    }
++  }
+   self->private_impl.magic = WUFFS_BASE__MAGIC;
+-  self->private_impl.vtable_for__wuffs_base__hasher_u32.vtable_name =
+-      wuffs_base__hasher_u32__vtable_name;
+-  self->private_impl.vtable_for__wuffs_base__hasher_u32.function_pointers =
+-      (const void*)(&wuffs_xxhash32__hasher__func_ptrs_for__wuffs_base__hasher_u32);
++  self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
++      wuffs_base__io_transformer__vtable_name;
++  self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
++      (const void*)(&wuffs_xz__decoder__func_ptrs_for__wuffs_base__io_transformer);
+   return wuffs_base__make_status(NULL);
+ }
+ 
+-wuffs_xxhash32__hasher*
+-wuffs_xxhash32__hasher__alloc(void) {
+-  wuffs_xxhash32__hasher* x =
+-      (wuffs_xxhash32__hasher*)(calloc(sizeof(wuffs_xxhash32__hasher), 1));
++wuffs_xz__decoder*
++wuffs_xz__decoder__alloc(void) {
++  wuffs_xz__decoder* x =
++      (wuffs_xz__decoder*)(calloc(1, sizeof(wuffs_xz__decoder)));
+   if (!x) {
+     return NULL;
+   }
+-  if (wuffs_xxhash32__hasher__initialize(
+-      x, sizeof(wuffs_xxhash32__hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
++  if (wuffs_xz__decoder__initialize(
++      x, sizeof(wuffs_xz__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
+     free(x);
+     return NULL;
+   }
+@@ -61506,18 +76646,511 @@ wuffs_xxhash32__hasher__alloc(void) {
+ }
+ 
+ size_t
+-sizeof__wuffs_xxhash32__hasher(void) {
+-  return sizeof(wuffs_xxhash32__hasher);
++sizeof__wuffs_xz__decoder(void) {
++  return sizeof(wuffs_xz__decoder);
+ }
+ 
+ // ---------------- Function Implementations
+ 
+-// -------- func xxhash32.hasher.get_quirk
++// -------- func xz.decoder.apply_non_final_filters
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint8_t
++wuffs_xz__decoder__apply_non_final_filters(
++    wuffs_xz__decoder* self,
++    wuffs_base__slice_u8 a_dst_slice) {
++  return (*self->private_impl.choosy_apply_non_final_filters)(self, a_dst_slice);
++}
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint8_t
++wuffs_xz__decoder__apply_non_final_filters__choosy_default(
++    wuffs_xz__decoder* self,
++    wuffs_base__slice_u8 a_dst_slice) {
++  uint32_t v_f = 0;
++  uint64_t v_i = 0;
++  uint32_t v_filter_id = 0;
++  uint32_t v_delta_dist = 0;
++  uint32_t v_delta_pos = 0;
++  uint8_t v_c8 = 0;
++
++  if (self->private_impl.f_num_non_final_filters <= 0u) {
++    return 0u;
++  }
++  v_f = (self->private_impl.f_num_non_final_filters - 1u);
++  while (true) {
++    v_filter_id = (self->private_impl.f_filters[v_f] & 127u);
++    if (v_filter_id == 3u) {
++      v_delta_dist = (((self->private_impl.f_filters[v_f] >> 8u) & 255u) + 1u);
++      v_delta_pos = (self->private_impl.f_filters[v_f] >> 24u);
++      v_i = 0u;
++      while (v_i < ((uint64_t)(a_dst_slice.len))) {
++        v_c8 = a_dst_slice.ptr[v_i];
++#if defined(__GNUC__)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wconversion"
++#endif
++        v_c8 += self->private_data.f_filter_data[v_f][(((uint32_t)(v_delta_dist + v_delta_pos)) & 255u)];
++#if defined(__GNUC__)
++#pragma GCC diagnostic pop
++#endif
++        self->private_data.f_filter_data[v_f][(v_delta_pos & 255u)] = v_c8;
++        v_delta_pos -= 1u;
++        a_dst_slice.ptr[v_i] = v_c8;
++        v_i += 1u;
++      }
++      self->private_impl.f_filters[v_f] &= 65535u;
++      self->private_impl.f_filters[v_f] |= ((uint32_t)(v_delta_pos << 24u));
++    }
++    if (v_f <= 0u) {
++      break;
++    }
++    v_f -= 1u;
++  }
++  return 0u;
++}
++
++// -------- func xz.decoder.apply_filter_04_x86
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint8_t
++wuffs_xz__decoder__apply_filter_04_x86(
++    wuffs_xz__decoder* self,
++    wuffs_base__slice_u8 a_dst_slice) {
++  wuffs_base__slice_u8 v_s = {0};
++  uint32_t v_p = 0;
++  uint64_t v_i = 0;
++  uint64_t v_prev_pos = 0;
++  uint32_t v_prev_mask = 0;
++  uint8_t v_c8 = 0;
++  uint32_t v_src = 0;
++  uint32_t v_dst = 0;
++  uint32_t v_bit_num = 0;
++
++  v_s = a_dst_slice;
++  v_p = ((uint32_t)(self->private_impl.f_bcj_pos + 5u));
++  v_prev_pos = 18446744073709551615u;
++  v_prev_mask = self->private_impl.f_bcj_x86_prev_mask;
++  while (((uint64_t)(v_s.len)) >= 5u) {
++    if (((uint8_t)(v_s.ptr[0u] & 254u)) != 232u) {
++      v_i += 1u;
++      v_p += 1u;
++      v_s = wuffs_base__slice_u8__subslice_i(v_s, 1u);
++      continue;
++    }
++    v_prev_pos = ((uint64_t)(v_i - v_prev_pos));
++    if (v_prev_pos > 3u) {
++      v_prev_mask = 0u;
++    } else if (v_prev_pos > 0u) {
++      v_prev_mask = (((uint32_t)(v_prev_mask << (v_prev_pos - 1u))) & 7u);
++      if (v_prev_mask != 0u) {
++        v_c8 = v_s.ptr[((uint8_t)(4u - WUFFS_XZ__FILTER_04_X86_MASK_TO_BIT_NUM[(v_prev_mask & 7u)]))];
++        if ( ! WUFFS_XZ__FILTER_04_X86_MASK_TO_ALLOWED_STATUS[(v_prev_mask & 7u)] || (v_c8 == 0u) || (v_c8 == 255u)) {
++          v_prev_pos = v_i;
++          v_prev_mask = (((uint32_t)(v_prev_mask << 1u)) | 1u);
++          v_i += 1u;
++          v_p += 1u;
++          v_s = wuffs_base__slice_u8__subslice_i(v_s, 1u);
++          continue;
++        }
++      }
++    }
++    v_prev_pos = v_i;
++    v_c8 = v_s.ptr[4u];
++    if ((v_c8 != 0u) && (v_c8 != 255u)) {
++      v_prev_mask = (((uint32_t)(v_prev_mask << 1u)) | 1u);
++      v_i += 1u;
++      v_p += 1u;
++      v_s = wuffs_base__slice_u8__subslice_i(v_s, 1u);
++      continue;
++    }
++    v_src = ((((uint32_t)(v_s.ptr[1u])) << 0u) |
++        (((uint32_t)(v_s.ptr[2u])) << 8u) |
++        (((uint32_t)(v_s.ptr[3u])) << 16u) |
++        (((uint32_t)(v_s.ptr[4u])) << 24u));
++    while (true) {
++      v_dst = ((uint32_t)(v_src - v_p));
++      if (v_prev_mask == 0u) {
++        break;
++      }
++      v_bit_num = ((uint32_t)(WUFFS_XZ__FILTER_04_X86_MASK_TO_BIT_NUM[(v_prev_mask & 7u)]));
++      v_c8 = ((uint8_t)((v_dst >> (24u - (v_bit_num * 8u)))));
++      if ((v_c8 != 0u) && (v_c8 != 255u)) {
++        break;
++      }
++      v_src = (v_dst ^ WUFFS_XZ__FILTER_04_X86_MASK_TO_XOR_OPERAND[(v_prev_mask & 7u)]);
++    }
++    v_dst &= 33554431u;
++    v_dst |= ((uint32_t)(0u - (v_dst & 16777216u)));
++    v_s.ptr[1u] = ((uint8_t)((v_dst >> 0u)));
++    v_s.ptr[2u] = ((uint8_t)((v_dst >> 8u)));
++    v_s.ptr[3u] = ((uint8_t)((v_dst >> 16u)));
++    v_s.ptr[4u] = ((uint8_t)((v_dst >> 24u)));
++    v_i += 5u;
++    v_p += 5u;
++    v_s = wuffs_base__slice_u8__subslice_i(v_s, 5u);
++  }
++  v_prev_pos = ((uint64_t)(v_i - v_prev_pos));
++  if (v_prev_pos > 3u) {
++    self->private_impl.f_bcj_x86_prev_mask = 0u;
++  } else if (v_prev_pos > 0u) {
++    self->private_impl.f_bcj_x86_prev_mask = ((uint32_t)(v_prev_mask << (v_prev_pos - 1u)));
++  }
++  self->private_impl.f_bcj_pos = ((uint32_t)(v_p - 5u));
++  return ((uint8_t)(((uint64_t)(v_s.len))));
++}
++
++// -------- func xz.decoder.apply_filter_05_powerpc
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint8_t
++wuffs_xz__decoder__apply_filter_05_powerpc(
++    wuffs_xz__decoder* self,
++    wuffs_base__slice_u8 a_dst_slice) {
++  wuffs_base__slice_u8 v_s = {0};
++  uint32_t v_p = 0;
++  uint32_t v_x = 0;
++
++  v_s = a_dst_slice;
++  v_p = self->private_impl.f_bcj_pos;
++  while (((uint64_t)(v_s.len)) >= 4u) {
++    v_x = ((((uint32_t)(v_s.ptr[0u])) << 24u) |
++        (((uint32_t)(v_s.ptr[1u])) << 16u) |
++        (((uint32_t)(v_s.ptr[2u])) << 8u) |
++        (((uint32_t)(v_s.ptr[3u])) << 0u));
++    if ((v_x & 4227858435u) == 1207959553u) {
++      v_x = ((((uint32_t)((v_x & 67108860u) - v_p)) & 67108860u) | 1207959553u);
++      v_s.ptr[0u] = ((uint8_t)((v_x >> 24u)));
++      v_s.ptr[1u] = ((uint8_t)((v_x >> 16u)));
++      v_s.ptr[2u] = ((uint8_t)((v_x >> 8u)));
++      v_s.ptr[3u] = ((uint8_t)((v_x >> 0u)));
++    }
++    v_p += 4u;
++    v_s = wuffs_base__slice_u8__subslice_i(v_s, 4u);
++  }
++  self->private_impl.f_bcj_pos = v_p;
++  return ((uint8_t)(((uint64_t)(v_s.len))));
++}
++
++// -------- func xz.decoder.apply_filter_06_ia64
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint8_t
++wuffs_xz__decoder__apply_filter_06_ia64(
++    wuffs_xz__decoder* self,
++    wuffs_base__slice_u8 a_dst_slice) {
++  wuffs_base__slice_u8 v_s = {0};
++  uint32_t v_p = 0;
++  uint32_t v_mask = 0;
++  uint32_t v_slot = 0;
++  uint32_t v_bit_pos = 0;
++  uint32_t v_byte_pos = 0;
++  uint32_t v_bit_res = 0;
++  uint64_t v_x = 0;
++  uint32_t v_j = 0;
++  uint64_t v_norm = 0;
++  uint32_t v_addr = 0;
++
++  v_s = a_dst_slice;
++  v_p = self->private_impl.f_bcj_pos;
++  while (((uint64_t)(v_s.len)) >= 16u) {
++    v_mask = ((uint32_t)(WUFFS_XZ__FILTER_06_IA64_BRANCH_TABLE[((uint8_t)(v_s.ptr[0u] & 31u))]));
++    v_slot = 0u;
++    while (true) {
++      do {
++        if (((v_mask >> v_slot) & 1u) == 0u) {
++          break;
++        }
++        v_bit_pos = ((v_slot * 41u) + 5u);
++        v_byte_pos = (v_bit_pos >> 3u);
++        v_bit_res = (v_bit_pos & 7u);
++        v_x = 0u;
++        v_j = 0u;
++        while (v_j < 6u) {
++          v_x |= (((uint64_t)(v_s.ptr[(v_j + v_byte_pos)])) << (8u * v_j));
++          v_j += 1u;
++        }
++        v_norm = (v_x >> v_bit_res);
++        if ((((v_norm >> 37u) & 15u) != 5u) || (((v_norm >> 9u) & 7u) != 0u)) {
++          break;
++        }
++        v_addr = ((uint32_t)(((v_norm >> 13u) & 1048575u)));
++        v_addr |= (((uint32_t)(((v_norm >> 36u) & 1u))) << 20u);
++        v_addr <<= 4u;
++        v_addr -= v_p;
++        v_addr >>= 4u;
++        v_norm &= 18446743996400148479u;
++        v_norm |= (((uint64_t)((v_addr & 1048575u))) << 13u);
++        v_norm |= (((uint64_t)((v_addr & 1048576u))) << 16u);
++        v_x &= ((((uint64_t)(1u)) << v_bit_res) - 1u);
++        v_x |= ((uint64_t)(v_norm << v_bit_res));
++        v_j = 0u;
++        while (v_j < 6u) {
++          v_s.ptr[(v_j + v_byte_pos)] = ((uint8_t)((v_x >> (8u * v_j))));
++          v_j += 1u;
++        }
++      } while (0);
++      if (v_slot >= 2u) {
++        break;
++      }
++      v_slot += 1u;
++    }
++    v_p += 16u;
++    v_s = wuffs_base__slice_u8__subslice_i(v_s, 16u);
++  }
++  self->private_impl.f_bcj_pos = v_p;
++  return ((uint8_t)(((uint64_t)(v_s.len))));
++}
++
++// -------- func xz.decoder.apply_filter_07_arm
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint8_t
++wuffs_xz__decoder__apply_filter_07_arm(
++    wuffs_xz__decoder* self,
++    wuffs_base__slice_u8 a_dst_slice) {
++  wuffs_base__slice_u8 v_s = {0};
++  uint32_t v_p = 0;
++  uint32_t v_x = 0;
++
++  v_s = a_dst_slice;
++  v_p = ((uint32_t)(self->private_impl.f_bcj_pos + 8u));
++  while (((uint64_t)(v_s.len)) >= 4u) {
++    if (v_s.ptr[3u] == 235u) {
++      v_x = ((((uint32_t)(v_s.ptr[0u])) << 0u) |
++          (((uint32_t)(v_s.ptr[1u])) << 8u) |
++          (((uint32_t)(v_s.ptr[2u])) << 16u) |
++          (((uint32_t)(v_s.ptr[3u])) << 24u));
++      v_x = (((uint32_t)(((v_x & 16777215u) << 2u) - v_p)) >> 2u);
++      v_s.ptr[0u] = ((uint8_t)((v_x >> 0u)));
++      v_s.ptr[1u] = ((uint8_t)((v_x >> 8u)));
++      v_s.ptr[2u] = ((uint8_t)((v_x >> 16u)));
++    }
++    v_p += 4u;
++    v_s = wuffs_base__slice_u8__subslice_i(v_s, 4u);
++  }
++  self->private_impl.f_bcj_pos = ((uint32_t)(v_p - 8u));
++  return ((uint8_t)(((uint64_t)(v_s.len))));
++}
++
++// -------- func xz.decoder.apply_filter_08_armthumb
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint8_t
++wuffs_xz__decoder__apply_filter_08_armthumb(
++    wuffs_xz__decoder* self,
++    wuffs_base__slice_u8 a_dst_slice) {
++  wuffs_base__slice_u8 v_s = {0};
++  uint32_t v_p = 0;
++  uint32_t v_x = 0;
++  uint32_t v_y = 0;
++
++  v_s = a_dst_slice;
++  v_p = ((uint32_t)(self->private_impl.f_bcj_pos + 4u));
++  while (((uint64_t)(v_s.len)) >= 4u) {
++    v_x = ((((uint32_t)(v_s.ptr[0u])) << 0u) |
++        (((uint32_t)(v_s.ptr[1u])) << 8u) |
++        (((uint32_t)(v_s.ptr[2u])) << 16u) |
++        (((uint32_t)(v_s.ptr[3u])) << 24u));
++    if ((v_x & 4160813056u) != 4160811008u) {
++      v_p += 2u;
++      v_s = wuffs_base__slice_u8__subslice_i(v_s, 2u);
++      continue;
++    }
++    v_y = ((((uint32_t)(((uint8_t)(v_s.ptr[0u] & 255u)))) << 11u) |
++        (((uint32_t)(((uint8_t)(v_s.ptr[1u] & 7u)))) << 19u) |
++        (((uint32_t)(((uint8_t)(v_s.ptr[2u] & 255u)))) << 0u) |
++        (((uint32_t)(((uint8_t)(v_s.ptr[3u] & 7u)))) << 8u));
++    v_y = (((uint32_t)(((uint32_t)(v_y << 1u)) - v_p)) >> 1u);
++    v_s.ptr[0u] = ((uint8_t)((v_y >> 11u)));
++    v_s.ptr[1u] = ((uint8_t)((((v_y >> 19u) & 7u) | 240u)));
++    v_s.ptr[2u] = ((uint8_t)((v_y >> 0u)));
++    v_s.ptr[3u] = ((uint8_t)((((v_y >> 8u) & 7u) | 248u)));
++    v_p += 4u;
++    v_s = wuffs_base__slice_u8__subslice_i(v_s, 4u);
++  }
++  self->private_impl.f_bcj_pos = ((uint32_t)(v_p - 4u));
++  return ((uint8_t)(((uint64_t)(v_s.len))));
++}
++
++// -------- func xz.decoder.apply_filter_09_sparc
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint8_t
++wuffs_xz__decoder__apply_filter_09_sparc(
++    wuffs_xz__decoder* self,
++    wuffs_base__slice_u8 a_dst_slice) {
++  wuffs_base__slice_u8 v_s = {0};
++  uint32_t v_p = 0;
++  uint32_t v_x = 0;
++
++  v_s = a_dst_slice;
++  v_p = self->private_impl.f_bcj_pos;
++  while (((uint64_t)(v_s.len)) >= 4u) {
++    v_x = ((((uint32_t)(v_s.ptr[0u])) << 24u) |
++        (((uint32_t)(v_s.ptr[1u])) << 16u) |
++        (((uint32_t)(v_s.ptr[2u])) << 8u) |
++        (((uint32_t)(v_s.ptr[3u])) << 0u));
++    if (((v_x >> 22u) == 256u) || ((v_x >> 22u) == 511u)) {
++      v_x = (((uint32_t)(((uint32_t)(v_x << 2u)) - v_p)) >> 2u);
++      v_x = ((1073741824u - (v_x & 4194304u)) | 1073741824u | (v_x & 4194303u));
++      v_s.ptr[0u] = ((uint8_t)((v_x >> 24u)));
++      v_s.ptr[1u] = ((uint8_t)((v_x >> 16u)));
++      v_s.ptr[2u] = ((uint8_t)((v_x >> 8u)));
++      v_s.ptr[3u] = ((uint8_t)((v_x >> 0u)));
++    }
++    v_p += 4u;
++    v_s = wuffs_base__slice_u8__subslice_i(v_s, 4u);
++  }
++  self->private_impl.f_bcj_pos = v_p;
++  return ((uint8_t)(((uint64_t)(v_s.len))));
++}
++
++// -------- func xz.decoder.apply_filter_0a_arm64
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint8_t
++wuffs_xz__decoder__apply_filter_0a_arm64(
++    wuffs_xz__decoder* self,
++    wuffs_base__slice_u8 a_dst_slice) {
++  wuffs_base__slice_u8 v_s = {0};
++  uint32_t v_p = 0;
++  uint32_t v_x = 0;
++  uint32_t v_y = 0;
++
++  v_s = a_dst_slice;
++  v_p = self->private_impl.f_bcj_pos;
++  while (((uint64_t)(v_s.len)) >= 4u) {
++    v_x = ((((uint32_t)(v_s.ptr[0u])) << 0u) |
++        (((uint32_t)(v_s.ptr[1u])) << 8u) |
++        (((uint32_t)(v_s.ptr[2u])) << 16u) |
++        (((uint32_t)(v_s.ptr[3u])) << 24u));
++    if ((v_x >> 26u) == 37u) {
++      v_y = ((uint32_t)(v_x - (v_p >> 2u)));
++      v_x = (2483027968u | (v_y & 67108863u));
++      v_s.ptr[0u] = ((uint8_t)((v_x >> 0u)));
++      v_s.ptr[1u] = ((uint8_t)((v_x >> 8u)));
++      v_s.ptr[2u] = ((uint8_t)((v_x >> 16u)));
++      v_s.ptr[3u] = ((uint8_t)((v_x >> 24u)));
++    } else if ((v_x & 2667577344u) == 2415919104u) {
++      v_y = (((v_x >> 29u) & 3u) | ((v_x >> 3u) & 2097148u));
++      if ((((uint32_t)(v_y + 131072u)) & 1835008u) == 0u) {
++        v_y -= (v_p >> 12u);
++        v_x &= 2415919135u;
++        v_x |= ((v_y & 3u) << 29u);
++        v_x |= ((v_y & 262140u) << 3u);
++        v_x |= (((uint32_t)(0u - (v_y & 131072u))) & 14680064u);
++        v_s.ptr[0u] = ((uint8_t)((v_x >> 0u)));
++        v_s.ptr[1u] = ((uint8_t)((v_x >> 8u)));
++        v_s.ptr[2u] = ((uint8_t)((v_x >> 16u)));
++        v_s.ptr[3u] = ((uint8_t)((v_x >> 24u)));
++      }
++    }
++    v_p += 4u;
++    v_s = wuffs_base__slice_u8__subslice_i(v_s, 4u);
++  }
++  self->private_impl.f_bcj_pos = v_p;
++  return ((uint8_t)(((uint64_t)(v_s.len))));
++}
++
++// -------- func xz.decoder.apply_filter_0b_riscv
++
++WUFFS_BASE__GENERATED_C_CODE
++static uint8_t
++wuffs_xz__decoder__apply_filter_0b_riscv(
++    wuffs_xz__decoder* self,
++    wuffs_base__slice_u8 a_dst_slice) {
++  wuffs_base__slice_u8 v_s = {0};
++  uint32_t v_p = 0;
++  uint32_t v_x = 0;
++  uint32_t v_x27 = 0;
++  uint32_t v_y = 0;
++  uint32_t v_addr = 0;
++
++  v_s = a_dst_slice;
++  v_p = self->private_impl.f_bcj_pos;
++  while (((uint64_t)(v_s.len)) >= 8u) {
++    if (v_s.ptr[0u] == 239u) {
++      if (((uint8_t)(v_s.ptr[1u] & 13u)) != 0u) {
++        v_p += 2u;
++        v_s = wuffs_base__slice_u8__subslice_i(v_s, 2u);
++        continue;
++      }
++      v_addr = ((((uint32_t)(((uint8_t)(v_s.ptr[1u] & 240u)))) << 13u) | (((uint32_t)(v_s.ptr[2u])) << 9u) | (((uint32_t)(v_s.ptr[3u])) << 1u));
++      v_addr -= v_p;
++      v_s.ptr[1u] = ((uint8_t)(((uint8_t)(v_s.ptr[1u] & 15u)) | ((uint8_t)(((v_addr >> 8u) & 240u)))));
++      v_s.ptr[2u] = ((uint8_t)((((v_addr >> 16u) & 15u) | ((v_addr >> 7u) & 16u) | (((uint32_t)(v_addr << 4u)) & 224u))));
++      v_s.ptr[3u] = ((uint8_t)((((v_addr >> 4u) & 127u) | ((v_addr >> 13u) & 128u))));
++      v_p += 4u;
++      v_s = wuffs_base__slice_u8__subslice_i(v_s, 4u);
++      continue;
++    } else if (((uint8_t)(v_s.ptr[0u] & 127u)) == 23u) {
++      v_x = ((((uint32_t)(v_s.ptr[0u])) << 0u) |
++          (((uint32_t)(v_s.ptr[1u])) << 8u) |
++          (((uint32_t)(v_s.ptr[2u])) << 16u) |
++          (((uint32_t)(v_s.ptr[3u])) << 24u));
++      if ((v_x & 3712u) != 0u) {
++        v_y = ((((uint32_t)(v_s.ptr[4u])) << 0u) |
++            (((uint32_t)(v_s.ptr[5u])) << 8u) |
++            (((uint32_t)(v_s.ptr[6u])) << 16u) |
++            (((uint32_t)(v_s.ptr[7u])) << 24u));
++        if (((((uint32_t)(v_x << 8u)) ^ ((uint32_t)(v_y - 3u))) & 1015811u) != 0u) {
++          v_p += 6u;
++          v_s = wuffs_base__slice_u8__subslice_i(v_s, 6u);
++          continue;
++        }
++        v_addr = ((v_x & 4294963200u) | (v_y >> 20u));
++        v_x = (279u | ((uint32_t)(v_y << 12u)));
++        v_s.ptr[0u] = ((uint8_t)((v_x >> 0u)));
++        v_s.ptr[1u] = ((uint8_t)((v_x >> 8u)));
++        v_s.ptr[2u] = ((uint8_t)((v_x >> 16u)));
++        v_s.ptr[3u] = ((uint8_t)((v_x >> 24u)));
++        v_s.ptr[4u] = ((uint8_t)((v_addr >> 0u)));
++        v_s.ptr[5u] = ((uint8_t)((v_addr >> 8u)));
++        v_s.ptr[6u] = ((uint8_t)((v_addr >> 16u)));
++        v_s.ptr[7u] = ((uint8_t)((v_addr >> 24u)));
++        v_p += 8u;
++        v_s = wuffs_base__slice_u8__subslice_i(v_s, 8u);
++        continue;
++      }
++      v_x27 = (v_x >> 27u);
++      if (((uint32_t)(((uint32_t)(v_x - 12567u)) << 18u)) >= (v_x27 & 29u)) {
++        v_p += 4u;
++        v_s = wuffs_base__slice_u8__subslice_i(v_s, 4u);
++        continue;
++      }
++      v_addr = ((((uint32_t)(v_s.ptr[4u])) << 24u) |
++          (((uint32_t)(v_s.ptr[5u])) << 16u) |
++          (((uint32_t)(v_s.ptr[6u])) << 8u) |
++          (((uint32_t)(v_s.ptr[7u])) << 0u));
++      v_addr -= v_p;
++      v_y = ((v_x >> 12u) | ((uint32_t)(v_addr << 20u)));
++      v_x = (23u | (v_x27 << 7u) | (((uint32_t)(v_addr + 2048u)) & 4294963200u));
++      v_s.ptr[0u] = ((uint8_t)((v_x >> 0u)));
++      v_s.ptr[1u] = ((uint8_t)((v_x >> 8u)));
++      v_s.ptr[2u] = ((uint8_t)((v_x >> 16u)));
++      v_s.ptr[3u] = ((uint8_t)((v_x >> 24u)));
++      v_s.ptr[4u] = ((uint8_t)((v_y >> 0u)));
++      v_s.ptr[5u] = ((uint8_t)((v_y >> 8u)));
++      v_s.ptr[6u] = ((uint8_t)((v_y >> 16u)));
++      v_s.ptr[7u] = ((uint8_t)((v_y >> 24u)));
++      v_p += 8u;
++      v_s = wuffs_base__slice_u8__subslice_i(v_s, 8u);
++      continue;
++    }
++    v_p += 2u;
++    v_s = wuffs_base__slice_u8__subslice_i(v_s, 2u);
++  }
++  self->private_impl.f_bcj_pos = v_p;
++  return ((uint8_t)(((uint64_t)(v_s.len))));
++}
++
++// -------- func xz.decoder.get_quirk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_xxhash32__hasher__get_quirk(
+-    const wuffs_xxhash32__hasher* self,
++wuffs_xz__decoder__get_quirk(
++    const wuffs_xz__decoder* self,
+     uint32_t a_key) {
+   if (!self) {
+     return 0;
+@@ -61527,15 +77160,24 @@ wuffs_xxhash32__hasher__get_quirk(
+     return 0;
+   }
+ 
++  if (a_key == 1u) {
++    if (self->private_impl.f_ignore_checksum) {
++      return 1u;
++    }
++  } else if (a_key == 2021322752u) {
++    if (self->private_impl.f_standalone_format) {
++      return 1u;
++    }
++  }
+   return 0u;
+ }
+ 
+-// -------- func xxhash32.hasher.set_quirk
++// -------- func xz.decoder.set_quirk
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+ WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_xxhash32__hasher__set_quirk(
+-    wuffs_xxhash32__hasher* self,
++wuffs_xz__decoder__set_quirk(
++    wuffs_xz__decoder* self,
+     uint32_t a_key,
+     uint64_t a_value) {
+   if (!self) {
+@@ -61548,747 +77190,1667 @@ wuffs_xxhash32__hasher__set_quirk(
+         : wuffs_base__error__initialize_not_called);
+   }
+ 
++  if (a_key == 1u) {
++    self->private_impl.f_ignore_checksum = (a_value > 0u);
++    return wuffs_base__make_status(NULL);
++  } else if (a_key == 2021322752u) {
++    self->private_impl.f_standalone_format = (a_value > 0u);
++    return wuffs_base__make_status(NULL);
++  }
+   return wuffs_base__make_status(wuffs_base__error__unsupported_option);
+ }
+ 
+-// -------- func xxhash32.hasher.update
++// -------- func xz.decoder.dst_history_retain_length
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_xxhash32__hasher__update(
+-    wuffs_xxhash32__hasher* self,
+-    wuffs_base__slice_u8 a_x) {
++WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
++wuffs_xz__decoder__dst_history_retain_length(
++    const wuffs_xz__decoder* self) {
+   if (!self) {
+-    return wuffs_base__make_empty_struct();
++    return wuffs_base__utility__make_optional_u63(false, 0u);
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__make_optional_u63(false, 0u);
++  }
++
++  return wuffs_lzma__decoder__dst_history_retain_length(&self->private_data.f_lzma);
++}
++
++// -------- func xz.decoder.workbuf_len
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
++wuffs_xz__decoder__workbuf_len(
++    const wuffs_xz__decoder* self) {
++  if (!self) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
++      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
++    return wuffs_base__utility__empty_range_ii_u64();
++  }
++
++  return wuffs_lzma__decoder__workbuf_len(&self->private_data.f_lzma);
++}
++
++// -------- func xz.decoder.transform_io
++
++WUFFS_BASE__GENERATED_C_CODE
++WUFFS_BASE__MAYBE_STATIC wuffs_base__status
++wuffs_xz__decoder__transform_io(
++    wuffs_xz__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
++  if (!self) {
++    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+   }
+   if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_empty_struct();
++    return wuffs_base__make_status(
++        (self->private_impl.magic == WUFFS_BASE__DISABLED)
++        ? wuffs_base__error__disabled_by_previous_error
++        : wuffs_base__error__initialize_not_called);
++  }
++  if (!a_dst || !a_src) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__bad_argument);
++  }
++  if ((self->private_impl.active_coroutine != 0) &&
++      (self->private_impl.active_coroutine != 1)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
++    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
++  }
++  self->private_impl.active_coroutine = 0;
++  wuffs_base__status status = wuffs_base__make_status(NULL);
++
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++
++  uint32_t coro_susp_point = self->private_impl.p_transform_io;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    while (true) {
++      {
++        wuffs_base__status t_0 = wuffs_xz__decoder__do_transform_io(self, a_dst, a_src, a_workbuf);
++        v_status = t_0;
++      }
++      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
++        status = wuffs_base__make_status(wuffs_xz__error__truncated_input);
++        goto exit;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
++    }
++
++    ok:
++    self->private_impl.p_transform_io = 0;
++    goto exit;
+   }
+ 
+-  wuffs_base__slice_u8 v_remaining = {0};
++  goto suspend;
++  suspend:
++  self->private_impl.p_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
+ 
+-  if ((self->private_impl.f_length_modulo_u32 == 0u) &&  ! self->private_impl.f_length_overflows_u32) {
+-    self->private_impl.f_v0 = 606290984u;
+-    self->private_impl.f_v1 = 2246822519u;
+-    self->private_impl.f_v2 = 0u;
+-    self->private_impl.f_v3 = 1640531535u;
+-  }
+-  while (((uint64_t)(a_x.len)) > 0u) {
+-    v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0u);
+-    if (((uint64_t)(a_x.len)) > 16777216u) {
+-      v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 16777216u);
+-      a_x = wuffs_base__slice_u8__subslice_j(a_x, 16777216u);
+-    }
+-    wuffs_xxhash32__hasher__up(self, a_x);
+-    a_x = v_remaining;
++  goto exit;
++  exit:
++  if (wuffs_base__status__is_error(&status)) {
++    self->private_impl.magic = WUFFS_BASE__DISABLED;
+   }
+-  return wuffs_base__make_empty_struct();
++  return status;
+ }
+ 
+-// -------- func xxhash32.hasher.update_u32
++// -------- func xz.decoder.do_transform_io
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_xxhash32__hasher__update_u32(
+-    wuffs_xxhash32__hasher* self,
+-    wuffs_base__slice_u8 a_x) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return 0;
+-  }
++static wuffs_base__status
++wuffs_xz__decoder__do_transform_io(
++    wuffs_xz__decoder* self,
++    wuffs_base__io_buffer* a_dst,
++    wuffs_base__io_buffer* a_src,
++    wuffs_base__slice_u8 a_workbuf) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  wuffs_xxhash32__hasher__update(self, a_x);
+-  return wuffs_xxhash32__hasher__checksum_u32(self);
+-}
++  uint64_t v_header_magic = 0;
++  uint64_t v_dmark = 0;
++  uint64_t v_smark = 0;
++  uint8_t v_i8 = 0;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++  uint32_t v_checksum32_have = 0;
++  uint32_t v_checksum32_want = 0;
++  uint64_t v_checksum64_have = 0;
++  uint64_t v_checksum64_want = 0;
++  wuffs_base__bitvec256 v_checksum256_have = {0};
++  uint64_t v_compressed_size = 0;
++  uint64_t v_uncompressed_size = 0;
++  uint32_t v_hash = 0;
++  uint8_t v_c8 = 0;
++  uint32_t v_c32 = 0;
++  uint16_t v_footer_magic = 0;
+ 
+-// -------- func xxhash32.hasher.up
++  uint8_t* iop_a_dst = NULL;
++  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_dst && a_dst->data.ptr) {
++    io0_a_dst = a_dst->data.ptr;
++    io1_a_dst = io0_a_dst + a_dst->meta.wi;
++    iop_a_dst = io1_a_dst;
++    io2_a_dst = io0_a_dst + a_dst->data.len;
++    if (a_dst->meta.closed) {
++      io2_a_dst = iop_a_dst;
++    }
++  }
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_xxhash32__hasher__up(
+-    wuffs_xxhash32__hasher* self,
+-    wuffs_base__slice_u8 a_x) {
+-  uint32_t v_new_lmu = 0;
+-  uint32_t v_buf_u32 = 0;
+-  uint32_t v_buf_len = 0;
+-  uint32_t v_v0 = 0;
+-  uint32_t v_v1 = 0;
+-  uint32_t v_v2 = 0;
+-  uint32_t v_v3 = 0;
+-  wuffs_base__slice_u8 v_p = {0};
++  uint32_t coro_susp_point = self->private_impl.p_do_transform_io;
++  if (coro_susp_point) {
++    v_checksum32_have = self->private_data.s_do_transform_io.v_checksum32_have;
++    v_checksum32_want = self->private_data.s_do_transform_io.v_checksum32_want;
++    v_checksum256_have = self->private_data.s_do_transform_io.v_checksum256_have;
++    v_compressed_size = self->private_data.s_do_transform_io.v_compressed_size;
++    v_uncompressed_size = self->private_data.s_do_transform_io.v_uncompressed_size;
++  }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-  v_new_lmu = ((uint32_t)(self->private_impl.f_length_modulo_u32 + ((uint32_t)(((uint64_t)(a_x.len))))));
+-  self->private_impl.f_length_overflows_u32 = ((v_new_lmu < self->private_impl.f_length_modulo_u32) || self->private_impl.f_length_overflows_u32);
+-  self->private_impl.f_length_modulo_u32 = v_new_lmu;
+-  while (true) {
+-    if (self->private_impl.f_buf_len >= 16u) {
+-      v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[0u])) |
+-          (((uint32_t)(self->private_impl.f_buf_data[1u])) << 8u) |
+-          (((uint32_t)(self->private_impl.f_buf_data[2u])) << 16u) |
+-          (((uint32_t)(self->private_impl.f_buf_data[3u])) << 24u));
+-      v_v0 = ((uint32_t)(self->private_impl.f_v0 + ((uint32_t)(v_buf_u32 * 2246822519u))));
+-      v_v0 = (((uint32_t)(v_v0 << 13u)) | (v_v0 >> 19u));
+-      self->private_impl.f_v0 = ((uint32_t)(v_v0 * 2654435761u));
+-      v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[4u])) |
+-          (((uint32_t)(self->private_impl.f_buf_data[5u])) << 8u) |
+-          (((uint32_t)(self->private_impl.f_buf_data[6u])) << 16u) |
+-          (((uint32_t)(self->private_impl.f_buf_data[7u])) << 24u));
+-      v_v1 = ((uint32_t)(self->private_impl.f_v1 + ((uint32_t)(v_buf_u32 * 2246822519u))));
+-      v_v1 = (((uint32_t)(v_v1 << 13u)) | (v_v1 >> 19u));
+-      self->private_impl.f_v1 = ((uint32_t)(v_v1 * 2654435761u));
+-      v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[8u])) |
+-          (((uint32_t)(self->private_impl.f_buf_data[9u])) << 8u) |
+-          (((uint32_t)(self->private_impl.f_buf_data[10u])) << 16u) |
+-          (((uint32_t)(self->private_impl.f_buf_data[11u])) << 24u));
+-      v_v2 = ((uint32_t)(self->private_impl.f_v2 + ((uint32_t)(v_buf_u32 * 2246822519u))));
+-      v_v2 = (((uint32_t)(v_v2 << 13u)) | (v_v2 >> 19u));
+-      self->private_impl.f_v2 = ((uint32_t)(v_v2 * 2654435761u));
+-      v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[12u])) |
+-          (((uint32_t)(self->private_impl.f_buf_data[13u])) << 8u) |
+-          (((uint32_t)(self->private_impl.f_buf_data[14u])) << 16u) |
+-          (((uint32_t)(self->private_impl.f_buf_data[15u])) << 24u));
+-      v_v3 = ((uint32_t)(self->private_impl.f_v3 + ((uint32_t)(v_buf_u32 * 2246822519u))));
+-      v_v3 = (((uint32_t)(v_v3 << 13u)) | (v_v3 >> 19u));
+-      self->private_impl.f_v3 = ((uint32_t)(v_v3 * 2654435761u));
+-      self->private_impl.f_buf_len = 0u;
+-      break;
+-    }
+-    if (((uint64_t)(a_x.len)) <= 0u) {
+-      return wuffs_base__make_empty_struct();
+-    }
+-    self->private_impl.f_buf_data[self->private_impl.f_buf_len] = a_x.ptr[0u];
++    while (true) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        uint64_t t_0;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 6)) {
++          t_0 = ((uint64_t)(wuffs_base__peek_u48le__no_bounds_check(iop_a_src)));
++          iop_a_src += 6;
++        } else {
++          self->private_data.s_do_transform_io.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++            uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
++            if (num_bits_0 == 40) {
++              t_0 = ((uint64_t)(*scratch));
++              break;
++            }
++            num_bits_0 += 8u;
++            *scratch |= ((uint64_t)(num_bits_0)) << 56;
++          }
++        }
++        v_header_magic = t_0;
++      }
++      if (v_header_magic != 388031461373u) {
++        status = wuffs_base__make_status(wuffs_xz__error__bad_header);
++        goto exit;
++      }
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++        uint64_t t_1;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 6)) {
++          t_1 = ((uint64_t)(wuffs_base__peek_u48le__no_bounds_check(iop_a_src)));
++          iop_a_src += 6;
++        } else {
++          self->private_data.s_do_transform_io.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++            uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
++            if (num_bits_1 == 40) {
++              t_1 = ((uint64_t)(*scratch));
++              break;
++            }
++            num_bits_1 += 8u;
++            *scratch |= ((uint64_t)(num_bits_1)) << 56;
++          }
++        }
++        v_header_magic = t_1;
++      }
++      if (v_header_magic == 72400582410240u) {
++        self->private_impl.f_checksummer = 0u;
++      } else if (v_header_magic == 60327687946496u) {
++        self->private_impl.f_checksummer = 1u;
++      } else if (v_header_magic == 77742513456128u) {
++        self->private_impl.f_checksummer = 2u;
++      } else if (v_header_magic == 177077137508864u) {
++        self->private_impl.f_checksummer = 3u;
++      } else if ((v_header_magic & 61695u) != 0u) {
++        status = wuffs_base__make_status(wuffs_xz__error__bad_header);
++        goto exit;
++      } else {
++        v_header_magic = (15u & (v_header_magic >> 8u));
++        if ((v_header_magic != 0u) &&
++            (v_header_magic != 1u) &&
++            (v_header_magic != 4u) &&
++            (v_header_magic != 10u)) {
++          status = wuffs_base__make_status(wuffs_xz__error__unsupported_checksum_algorithm);
++          goto exit;
++        }
++        status = wuffs_base__make_status(wuffs_xz__error__bad_checksum);
++        goto exit;
++      }
++      self->private_impl.f_flags = ((uint16_t)(v_header_magic));
++      self->private_impl.f_num_actual_blocks = 0u;
++      while (true) {
++        if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
++          continue;
++        } else if (wuffs_base__peek_u8be__no_bounds_check(iop_a_src) == 0u) {
++          break;
++        }
++        self->private_impl.f_num_actual_blocks += 1u;
++        if ( ! self->private_impl.f_ignore_checksum) {
++          wuffs_private_impl__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
++              sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
++        }
++        self->private_impl.f_compressed_size_for_index = 4u;
++        while (true) {
++          v_smark = ((uint64_t)(iop_a_src - io0_a_src));
++          {
++            if (a_src) {
++              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++            }
++            wuffs_base__status t_2 = wuffs_xz__decoder__decode_block_header_with_padding(self, a_src);
++            v_status = t_2;
++            if (a_src) {
++              iop_a_src = a_src->data.ptr + a_src->meta.ri;
++            }
++          }
++          wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_compressed_size_for_index, wuffs_private_impl__io__count_since(v_smark, ((uint64_t)(iop_a_src - io0_a_src))));
++          if ( ! self->private_impl.f_ignore_checksum) {
++            v_checksum32_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_private_impl__io__since(v_smark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
++          }
++          if (wuffs_base__status__is_ok(&v_status)) {
++            break;
++          }
++          status = v_status;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
++        }
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++          uint32_t t_3;
++          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++            t_3 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++            iop_a_src += 4;
++          } else {
++            self->private_data.s_do_transform_io.scratch = 0;
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++            while (true) {
++              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                goto suspend;
++              }
++              uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++              uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
++              *scratch <<= 8;
++              *scratch >>= 8;
++              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
++              if (num_bits_3 == 24) {
++                t_3 = ((uint32_t)(*scratch));
++                break;
++              }
++              num_bits_3 += 8u;
++              *scratch |= ((uint64_t)(num_bits_3)) << 56;
++            }
++          }
++          v_checksum32_want = t_3;
++        }
++        if (self->private_impl.f_ignore_checksum) {
++        } else if (v_checksum32_have != v_checksum32_want) {
++          status = wuffs_base__make_status(wuffs_xz__error__bad_checksum);
++          goto exit;
++        } else {
++          wuffs_private_impl__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
++              sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
++          wuffs_private_impl__ignore_status(wuffs_crc64__ecma_hasher__initialize(&self->private_data.f_crc64,
++              sizeof (wuffs_crc64__ecma_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
++          wuffs_private_impl__ignore_status(wuffs_sha256__hasher__initialize(&self->private_data.f_sha256,
++              sizeof (wuffs_sha256__hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
++        }
++        v_compressed_size = 0u;
++        v_uncompressed_size = 0u;
++        while (true) {
++          if (((uint64_t)(self->private_impl.f_bcj_undo_index)) > ((uint64_t)(io2_a_dst - iop_a_dst))) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
++            continue;
++          }
++          v_dmark = ((uint64_t)(iop_a_dst - io0_a_dst));
++          v_smark = ((uint64_t)(iop_a_src - io0_a_src));
++          if (self->private_impl.f_num_non_final_filters == 0u) {
++            {
++              if (a_dst) {
++                a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++              }
++              if (a_src) {
++                a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++              }
++              wuffs_base__status t_4 = wuffs_lzma__decoder__transform_io(&self->private_data.f_lzma, a_dst, a_src, a_workbuf);
++              v_status = t_4;
++              if (a_dst) {
++                iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
++              }
++              if (a_src) {
++                iop_a_src = a_src->data.ptr + a_src->meta.ri;
++              }
++            }
++          } else {
++            if (self->private_impl.f_bcj_undo_index > 0u) {
++              wuffs_private_impl__io_writer__copy_from_slice(&iop_a_dst, io2_a_dst,wuffs_base__make_slice_u8(self->private_data.f_filter_data[0u], self->private_impl.f_bcj_undo_index));
++              self->private_impl.f_bcj_undo_index = 0u;
++            }
++            {
++              uint8_t* o_0_io0_a_dst = io0_a_dst;
++              uint8_t* o_0_io1_a_dst = io1_a_dst;
++              io0_a_dst = iop_a_dst;
++              io1_a_dst = iop_a_dst;
++              wuffs_base__io_buffer o_0_a_dst;
++              if (a_dst) {
++                memcpy(&o_0_a_dst, a_dst, sizeof(*a_dst));
++                size_t wi0 = a_dst->meta.wi;
++                a_dst->data.ptr += wi0;
++                a_dst->data.len -= wi0;
++                a_dst->meta.ri = 0;
++                a_dst->meta.wi = 0;
++                a_dst->meta.pos = wuffs_base__u64__sat_add(a_dst->meta.pos, wi0);
++              }
++              {
++                if (a_dst) {
++                  a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++                }
++                if (a_src) {
++                  a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++                }
++                wuffs_base__status t_5 = wuffs_lzma__decoder__transform_io(&self->private_data.f_lzma, a_dst, a_src, a_workbuf);
++                v_status = t_5;
++                if (a_dst) {
++                  iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
++                }
++                if (a_src) {
++                  iop_a_src = a_src->data.ptr + a_src->meta.ri;
++                }
++              }
++              if (a_dst) {
++                memcpy(a_dst, &o_0_a_dst, sizeof(*a_dst));
++                a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
++                io0_a_dst = o_0_io0_a_dst;
++                io1_a_dst = o_0_io1_a_dst;
++              }
++            }
++            self->private_impl.f_bcj_undo_index = wuffs_xz__decoder__apply_non_final_filters(self, wuffs_private_impl__io__since(v_dmark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
++            if ((self->private_impl.f_bcj_undo_index > 0u) &&  ! wuffs_base__status__is_ok(&v_status)) {
++              v_i8 = ((uint8_t)(self->private_impl.f_bcj_undo_index - 1u));
++              while (true) {
++                if ( ! (iop_a_dst > io1_a_dst)) {
++                  status = wuffs_base__make_status(wuffs_xz__error__internal_error_inconsistent_bcj_filter_state);
++                  goto exit;
++                }
++                self->private_data.f_filter_data[0u][v_i8] = iop_a_dst[-1];
++                iop_a_dst--;
++                if (v_i8 <= 0u) {
++                  break;
++                }
+ #if defined(__GNUC__)
+ #pragma GCC diagnostic push
+ #pragma GCC diagnostic ignored "-Wconversion"
+ #endif
+-    self->private_impl.f_buf_len += 1u;
++                v_i8 -= 1u;
+ #if defined(__GNUC__)
+ #pragma GCC diagnostic pop
+ #endif
+-    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
+-  }
+-  v_buf_len = ((uint32_t)((self->private_impl.f_buf_len & 15u)));
+-  v_v0 = self->private_impl.f_v0;
+-  v_v1 = self->private_impl.f_v1;
+-  v_v2 = self->private_impl.f_v2;
+-  v_v3 = self->private_impl.f_v3;
+-  {
+-    wuffs_base__slice_u8 i_slice_p = a_x;
+-    v_p.ptr = i_slice_p.ptr;
+-    v_p.len = 16;
+-    uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 16) * 16);
+-    while (v_p.ptr < i_end0_p) {
+-      v_buf_u32 = (((uint32_t)(v_p.ptr[0u])) |
+-          (((uint32_t)(v_p.ptr[1u])) << 8u) |
+-          (((uint32_t)(v_p.ptr[2u])) << 16u) |
+-          (((uint32_t)(v_p.ptr[3u])) << 24u));
+-      v_v0 = ((uint32_t)(v_v0 + ((uint32_t)(v_buf_u32 * 2246822519u))));
+-      v_v0 = (((uint32_t)(v_v0 << 13u)) | (v_v0 >> 19u));
+-      v_v0 = ((uint32_t)(v_v0 * 2654435761u));
+-      v_buf_u32 = (((uint32_t)(v_p.ptr[4u])) |
+-          (((uint32_t)(v_p.ptr[5u])) << 8u) |
+-          (((uint32_t)(v_p.ptr[6u])) << 16u) |
+-          (((uint32_t)(v_p.ptr[7u])) << 24u));
+-      v_v1 = ((uint32_t)(v_v1 + ((uint32_t)(v_buf_u32 * 2246822519u))));
+-      v_v1 = (((uint32_t)(v_v1 << 13u)) | (v_v1 >> 19u));
+-      v_v1 = ((uint32_t)(v_v1 * 2654435761u));
+-      v_buf_u32 = (((uint32_t)(v_p.ptr[8u])) |
+-          (((uint32_t)(v_p.ptr[9u])) << 8u) |
+-          (((uint32_t)(v_p.ptr[10u])) << 16u) |
+-          (((uint32_t)(v_p.ptr[11u])) << 24u));
+-      v_v2 = ((uint32_t)(v_v2 + ((uint32_t)(v_buf_u32 * 2246822519u))));
+-      v_v2 = (((uint32_t)(v_v2 << 13u)) | (v_v2 >> 19u));
+-      v_v2 = ((uint32_t)(v_v2 * 2654435761u));
+-      v_buf_u32 = (((uint32_t)(v_p.ptr[12u])) |
+-          (((uint32_t)(v_p.ptr[13u])) << 8u) |
+-          (((uint32_t)(v_p.ptr[14u])) << 16u) |
+-          (((uint32_t)(v_p.ptr[15u])) << 24u));
+-      v_v3 = ((uint32_t)(v_v3 + ((uint32_t)(v_buf_u32 * 2246822519u))));
+-      v_v3 = (((uint32_t)(v_v3 << 13u)) | (v_v3 >> 19u));
+-      v_v3 = ((uint32_t)(v_v3 * 2654435761u));
+-      v_p.ptr += 16;
+-    }
+-    v_p.len = 1;
+-    uint8_t* i_end1_p = i_slice_p.ptr + i_slice_p.len;
+-    while (v_p.ptr < i_end1_p) {
+-      self->private_impl.f_buf_data[v_buf_len] = v_p.ptr[0u];
+-      v_buf_len = ((v_buf_len + 1u) & 15u);
+-      v_p.ptr += 1;
++              }
++            }
++          }
++          v_compressed_size += wuffs_private_impl__io__count_since(v_smark, ((uint64_t)(iop_a_src - io0_a_src)));
++          v_uncompressed_size += wuffs_private_impl__io__count_since(v_dmark, ((uint64_t)(iop_a_dst - io0_a_dst)));
++          if (self->private_impl.f_ignore_checksum) {
++          } else if (self->private_impl.f_checksummer == 1u) {
++            wuffs_crc32__ieee_hasher__update(&self->private_data.f_crc32, wuffs_private_impl__io__since(v_dmark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
++          } else if (self->private_impl.f_checksummer == 2u) {
++            wuffs_crc64__ecma_hasher__update(&self->private_data.f_crc64, wuffs_private_impl__io__since(v_dmark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
++          } else if (self->private_impl.f_checksummer == 3u) {
++            wuffs_sha256__hasher__update(&self->private_data.f_sha256, wuffs_private_impl__io__since(v_dmark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
++          }
++          if (wuffs_base__status__is_ok(&v_status)) {
++            break;
++          }
++          status = v_status;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
++        }
++        if ((self->private_impl.f_block_has_compressed_size && (self->private_impl.f_block_compressed_size != v_compressed_size)) || (self->private_impl.f_block_has_uncompressed_size && (self->private_impl.f_block_uncompressed_size != v_uncompressed_size))) {
++          status = wuffs_base__make_status(wuffs_xz__error__bad_block_header);
++          goto exit;
++        }
++        wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_compressed_size_for_index, v_compressed_size);
++        wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_compressed_size_for_index, ((uint64_t)(WUFFS_XZ__CHECKSUM_LENGTH[self->private_impl.f_checksummer])));
++        self->private_impl.f_verification_have_total_sizes[0u] += self->private_impl.f_compressed_size_for_index;
++        v_hash = ((uint32_t)((self->private_impl.f_compressed_size_for_index ^ (self->private_impl.f_compressed_size_for_index >> 32u))));
++        v_hash *= 3432918353u;
++        v_hash = (((uint32_t)(v_hash << 15u)) | (v_hash >> 17u));
++        v_hash *= 461845907u;
++        v_hash ^= self->private_impl.f_verification_have_hashed_sizes[0u];
++        v_hash = (((uint32_t)(v_hash << 13u)) | (v_hash >> 19u));
++        self->private_impl.f_verification_have_hashed_sizes[0u] = ((uint32_t)(((uint32_t)(v_hash * 5u)) + 3864292196u));
++        self->private_impl.f_verification_have_total_sizes[1u] += v_uncompressed_size;
++        v_hash = ((uint32_t)((v_uncompressed_size ^ (v_uncompressed_size >> 32u))));
++        v_hash *= 3432918353u;
++        v_hash = (((uint32_t)(v_hash << 15u)) | (v_hash >> 17u));
++        v_hash *= 461845907u;
++        v_hash ^= self->private_impl.f_verification_have_hashed_sizes[1u];
++        v_hash = (((uint32_t)(v_hash << 13u)) | (v_hash >> 19u));
++        self->private_impl.f_verification_have_hashed_sizes[1u] = ((uint32_t)(((uint32_t)(v_hash * 5u)) + 3864292196u));
++        while ((v_compressed_size & 3u) != 0u) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint8_t t_6 = *iop_a_src++;
++            v_c8 = t_6;
++          }
++          if (v_c8 != 0u) {
++            status = wuffs_base__make_status(wuffs_xz__error__bad_padding);
++            goto exit;
++          }
++          v_compressed_size += 1u;
++        }
++        self->private_impl.f_lzma_needs_reset = true;
++        if (self->private_impl.f_ignore_checksum) {
++          self->private_data.s_do_transform_io.scratch = ((uint32_t)(WUFFS_XZ__CHECKSUM_LENGTH[self->private_impl.f_checksummer]));
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
++          if (self->private_data.s_do_transform_io.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
++            self->private_data.s_do_transform_io.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
++            iop_a_src = io2_a_src;
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          iop_a_src += self->private_data.s_do_transform_io.scratch;
++        } else if (self->private_impl.f_checksummer == 1u) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
++            uint32_t t_7;
++            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++              t_7 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++              iop_a_src += 4;
++            } else {
++              self->private_data.s_do_transform_io.scratch = 0;
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
++              while (true) {
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++                uint32_t num_bits_7 = ((uint32_t)(*scratch >> 56));
++                *scratch <<= 8;
++                *scratch >>= 8;
++                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_7;
++                if (num_bits_7 == 24) {
++                  t_7 = ((uint32_t)(*scratch));
++                  break;
++                }
++                num_bits_7 += 8u;
++                *scratch |= ((uint64_t)(num_bits_7)) << 56;
++              }
++            }
++            v_checksum32_want = t_7;
++          }
++          v_checksum32_have = wuffs_crc32__ieee_hasher__checksum_u32(&self->private_data.f_crc32);
++          if (v_checksum32_have != v_checksum32_want) {
++            status = wuffs_base__make_status(wuffs_xz__error__bad_checksum);
++            goto exit;
++          }
++        } else if (self->private_impl.f_checksummer == 2u) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
++            uint64_t t_8;
++            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
++              t_8 = wuffs_base__peek_u64le__no_bounds_check(iop_a_src);
++              iop_a_src += 8;
++            } else {
++              self->private_data.s_do_transform_io.scratch = 0;
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
++              while (true) {
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++                uint32_t num_bits_8 = ((uint32_t)(*scratch >> 56));
++                *scratch <<= 8;
++                *scratch >>= 8;
++                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_8;
++                if (num_bits_8 == 56) {
++                  t_8 = ((uint64_t)(*scratch));
++                  break;
++                }
++                num_bits_8 += 8u;
++                *scratch |= ((uint64_t)(num_bits_8)) << 56;
++              }
++            }
++            v_checksum64_want = t_8;
++          }
++          v_checksum64_have = wuffs_crc64__ecma_hasher__checksum_u64(&self->private_data.f_crc64);
++          if (v_checksum64_have != v_checksum64_want) {
++            status = wuffs_base__make_status(wuffs_xz__error__bad_checksum);
++            goto exit;
++          }
++        } else if (self->private_impl.f_checksummer == 3u) {
++          v_checksum256_have = wuffs_sha256__hasher__checksum_bitvec256(&self->private_data.f_sha256);
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(17);
++            uint64_t t_9;
++            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
++              t_9 = wuffs_base__peek_u64be__no_bounds_check(iop_a_src);
++              iop_a_src += 8;
++            } else {
++              self->private_data.s_do_transform_io.scratch = 0;
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(18);
++              while (true) {
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++                uint32_t num_bits_9 = ((uint32_t)(*scratch & 0xFFu));
++                *scratch >>= 8;
++                *scratch <<= 8;
++                *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_9);
++                if (num_bits_9 == 56) {
++                  t_9 = ((uint64_t)(*scratch >> 0));
++                  break;
++                }
++                num_bits_9 += 8u;
++                *scratch |= ((uint64_t)(num_bits_9));
++              }
++            }
++            v_checksum64_want = t_9;
++          }
++          if (wuffs_base__bitvec256__get_u64(&v_checksum256_have, 3u) != v_checksum64_want) {
++            status = wuffs_base__make_status(wuffs_xz__error__bad_checksum);
++            goto exit;
++          }
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(19);
++            uint64_t t_10;
++            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
++              t_10 = wuffs_base__peek_u64be__no_bounds_check(iop_a_src);
++              iop_a_src += 8;
++            } else {
++              self->private_data.s_do_transform_io.scratch = 0;
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(20);
++              while (true) {
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++                uint32_t num_bits_10 = ((uint32_t)(*scratch & 0xFFu));
++                *scratch >>= 8;
++                *scratch <<= 8;
++                *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_10);
++                if (num_bits_10 == 56) {
++                  t_10 = ((uint64_t)(*scratch >> 0));
++                  break;
++                }
++                num_bits_10 += 8u;
++                *scratch |= ((uint64_t)(num_bits_10));
++              }
++            }
++            v_checksum64_want = t_10;
++          }
++          if (wuffs_base__bitvec256__get_u64(&v_checksum256_have, 2u) != v_checksum64_want) {
++            status = wuffs_base__make_status(wuffs_xz__error__bad_checksum);
++            goto exit;
++          }
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(21);
++            uint64_t t_11;
++            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
++              t_11 = wuffs_base__peek_u64be__no_bounds_check(iop_a_src);
++              iop_a_src += 8;
++            } else {
++              self->private_data.s_do_transform_io.scratch = 0;
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22);
++              while (true) {
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++                uint32_t num_bits_11 = ((uint32_t)(*scratch & 0xFFu));
++                *scratch >>= 8;
++                *scratch <<= 8;
++                *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_11);
++                if (num_bits_11 == 56) {
++                  t_11 = ((uint64_t)(*scratch >> 0));
++                  break;
++                }
++                num_bits_11 += 8u;
++                *scratch |= ((uint64_t)(num_bits_11));
++              }
++            }
++            v_checksum64_want = t_11;
++          }
++          if (wuffs_base__bitvec256__get_u64(&v_checksum256_have, 1u) != v_checksum64_want) {
++            status = wuffs_base__make_status(wuffs_xz__error__bad_checksum);
++            goto exit;
++          }
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(23);
++            uint64_t t_12;
++            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
++              t_12 = wuffs_base__peek_u64be__no_bounds_check(iop_a_src);
++              iop_a_src += 8;
++            } else {
++              self->private_data.s_do_transform_io.scratch = 0;
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(24);
++              while (true) {
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++                uint32_t num_bits_12 = ((uint32_t)(*scratch & 0xFFu));
++                *scratch >>= 8;
++                *scratch <<= 8;
++                *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_12);
++                if (num_bits_12 == 56) {
++                  t_12 = ((uint64_t)(*scratch >> 0));
++                  break;
++                }
++                num_bits_12 += 8u;
++                *scratch |= ((uint64_t)(num_bits_12));
++              }
++            }
++            v_checksum64_want = t_12;
++          }
++          if (wuffs_base__bitvec256__get_u64(&v_checksum256_have, 0u) != v_checksum64_want) {
++            status = wuffs_base__make_status(wuffs_xz__error__bad_checksum);
++            goto exit;
++          }
++        }
++      }
++      self->private_impl.f_backwards_size = 0u;
++      if ( ! self->private_impl.f_ignore_checksum) {
++        wuffs_private_impl__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
++            sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
++      }
++      while (true) {
++        v_smark = ((uint64_t)(iop_a_src - io0_a_src));
++        {
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          wuffs_base__status t_13 = wuffs_xz__decoder__verify_index(self, a_src);
++          v_status = t_13;
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++        }
++        wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_backwards_size, wuffs_private_impl__io__count_since(v_smark, ((uint64_t)(iop_a_src - io0_a_src))));
++        if ( ! self->private_impl.f_ignore_checksum) {
++          wuffs_crc32__ieee_hasher__update(&self->private_data.f_crc32, wuffs_private_impl__io__since(v_smark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
++        }
++        if (wuffs_base__status__is_ok(&v_status)) {
++          break;
++        }
++        status = v_status;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(25);
++      }
++      if ( ! self->private_impl.f_ignore_checksum) {
++        wuffs_crc32__ieee_hasher__update(&self->private_data.f_crc32, wuffs_base__make_slice_u8(wuffs_base__strip_const_from_u8_ptr(WUFFS_XZ__ZEROES), (3u & ((uint64_t)(0u - (3u & self->private_impl.f_backwards_size))))));
++      }
++      while ((self->private_impl.f_backwards_size & 3u) != 0u) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(26);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_14 = *iop_a_src++;
++          v_c8 = t_14;
++        }
++        if (v_c8 != 0u) {
++          status = wuffs_base__make_status(wuffs_xz__error__bad_index);
++          goto exit;
++        }
++        self->private_impl.f_backwards_size += 1u;
++      }
++      self->private_impl.f_backwards_size >>= 2u;
++      if ((self->private_impl.f_backwards_size == 0u) || (self->private_impl.f_backwards_size > 4294967295u)) {
++        status = wuffs_base__make_status(wuffs_xz__error__bad_index);
++        goto exit;
++      }
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(27);
++        uint32_t t_15;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++          t_15 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++          iop_a_src += 4;
++        } else {
++          self->private_data.s_do_transform_io.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(28);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++            uint32_t num_bits_15 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_15;
++            if (num_bits_15 == 24) {
++              t_15 = ((uint32_t)(*scratch));
++              break;
++            }
++            num_bits_15 += 8u;
++            *scratch |= ((uint64_t)(num_bits_15)) << 56;
++          }
++        }
++        v_checksum32_want = t_15;
++      }
++      if (self->private_impl.f_ignore_checksum) {
++      } else if (v_checksum32_want != wuffs_crc32__ieee_hasher__checksum_u32(&self->private_data.f_crc32)) {
++        status = wuffs_base__make_status(wuffs_xz__error__bad_checksum);
++        goto exit;
++      } else {
++        wuffs_private_impl__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
++            sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
++      }
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(29);
++        uint32_t t_16;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++          t_16 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++          iop_a_src += 4;
++        } else {
++          self->private_data.s_do_transform_io.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(30);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++            uint32_t num_bits_16 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_16;
++            if (num_bits_16 == 24) {
++              t_16 = ((uint32_t)(*scratch));
++              break;
++            }
++            num_bits_16 += 8u;
++            *scratch |= ((uint64_t)(num_bits_16)) << 56;
++          }
++        }
++        v_checksum32_want = t_16;
++      }
++      while (true) {
++        v_smark = ((uint64_t)(iop_a_src - io0_a_src));
++        {
++          if (a_src) {
++            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++          }
++          wuffs_base__status t_17 = wuffs_xz__decoder__verify_footer(self, a_src);
++          v_status = t_17;
++          if (a_src) {
++            iop_a_src = a_src->data.ptr + a_src->meta.ri;
++          }
++        }
++        if ( ! self->private_impl.f_ignore_checksum) {
++          wuffs_crc32__ieee_hasher__update(&self->private_data.f_crc32, wuffs_private_impl__io__since(v_smark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
++        }
++        if (wuffs_base__status__is_ok(&v_status)) {
++          break;
++        }
++        status = v_status;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(31);
++      }
++      if ( ! self->private_impl.f_ignore_checksum && (v_checksum32_want != wuffs_crc32__ieee_hasher__checksum_u32(&self->private_data.f_crc32))) {
++        status = wuffs_base__make_status(wuffs_xz__error__bad_checksum);
++        goto exit;
++      }
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(32);
++        uint16_t t_18;
++        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++          t_18 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
++          iop_a_src += 2;
++        } else {
++          self->private_data.s_do_transform_io.scratch = 0;
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(33);
++          while (true) {
++            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++              goto suspend;
++            }
++            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
++            uint32_t num_bits_18 = ((uint32_t)(*scratch >> 56));
++            *scratch <<= 8;
++            *scratch >>= 8;
++            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_18;
++            if (num_bits_18 == 8) {
++              t_18 = ((uint16_t)(*scratch));
++              break;
++            }
++            num_bits_18 += 8u;
++            *scratch |= ((uint64_t)(num_bits_18)) << 56;
++          }
++        }
++        v_footer_magic = t_18;
++      }
++      if (v_footer_magic != 23129u) {
++        status = wuffs_base__make_status(wuffs_xz__error__bad_footer);
++        goto exit;
++      }
++      if ( ! self->private_impl.f_standalone_format) {
++        break;
++      }
++      while (true) {
++        while (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
++          if (a_src && a_src->meta.closed) {
++            if (((uint64_t)(io2_a_src - iop_a_src)) == 0u) {
++              goto label__streams__break;
++            } else {
++              status = wuffs_base__make_status(wuffs_xz__error__truncated_input);
++              goto exit;
++            }
++          }
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(34);
++        }
++        v_c32 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++        if (v_c32 == 1484404733u) {
++          break;
++        } else if (v_c32 != 0u) {
++          status = wuffs_base__make_status(wuffs_xz__error__bad_header_concatenated_stream);
++          goto exit;
++        }
++        iop_a_src += 4u;
++      }
++      self->private_impl.f_started_verify_index = false;
+     }
+-    v_p.len = 0;
+-  }
+-  self->private_impl.f_buf_len = ((uint8_t)(v_buf_len));
+-  self->private_impl.f_v0 = v_v0;
+-  self->private_impl.f_v1 = v_v1;
+-  self->private_impl.f_v2 = v_v2;
+-  self->private_impl.f_v3 = v_v3;
+-  return wuffs_base__make_empty_struct();
+-}
+-
+-// -------- func xxhash32.hasher.checksum_u32
++    label__streams__break:;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint32_t
+-wuffs_xxhash32__hasher__checksum_u32(
+-    const wuffs_xxhash32__hasher* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
++    ok:
++    self->private_impl.p_do_transform_io = 0;
++    goto exit;
+   }
+ 
+-  uint32_t v_ret = 0;
+-  uint32_t v_i = 0;
+-  uint32_t v_n = 0;
+-  uint32_t v_buf_u32 = 0;
++  goto suspend;
++  suspend:
++  self->private_impl.p_do_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_do_transform_io.v_checksum32_have = v_checksum32_have;
++  self->private_data.s_do_transform_io.v_checksum32_want = v_checksum32_want;
++  self->private_data.s_do_transform_io.v_checksum256_have = v_checksum256_have;
++  self->private_data.s_do_transform_io.v_compressed_size = v_compressed_size;
++  self->private_data.s_do_transform_io.v_uncompressed_size = v_uncompressed_size;
+ 
+-  if ((self->private_impl.f_length_modulo_u32 >= 16u) || self->private_impl.f_length_overflows_u32) {
+-    v_ret += (((uint32_t)(self->private_impl.f_v0 << 1u)) | (self->private_impl.f_v0 >> 31u));
+-    v_ret += (((uint32_t)(self->private_impl.f_v1 << 7u)) | (self->private_impl.f_v1 >> 25u));
+-    v_ret += (((uint32_t)(self->private_impl.f_v2 << 12u)) | (self->private_impl.f_v2 >> 20u));
+-    v_ret += (((uint32_t)(self->private_impl.f_v3 << 18u)) | (self->private_impl.f_v3 >> 14u));
+-    v_ret += self->private_impl.f_length_modulo_u32;
+-  } else {
+-    v_ret += 374761393u;
+-    v_ret += self->private_impl.f_length_modulo_u32;
+-  }
+-  v_n = 16u;
+-  v_n = wuffs_base__u32__min(v_n, ((uint32_t)(self->private_impl.f_buf_len)));
+-  if (4u <= v_n) {
+-    v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[0u])) |
+-        (((uint32_t)(self->private_impl.f_buf_data[1u])) << 8u) |
+-        (((uint32_t)(self->private_impl.f_buf_data[2u])) << 16u) |
+-        (((uint32_t)(self->private_impl.f_buf_data[3u])) << 24u));
+-    v_ret += ((uint32_t)(v_buf_u32 * 3266489917u));
+-    v_ret = (((uint32_t)(v_ret << 17u)) | (v_ret >> 15u));
+-    v_ret *= 668265263u;
+-    v_i = 4u;
+-  }
+-  if (8u <= v_n) {
+-    v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[4u])) |
+-        (((uint32_t)(self->private_impl.f_buf_data[5u])) << 8u) |
+-        (((uint32_t)(self->private_impl.f_buf_data[6u])) << 16u) |
+-        (((uint32_t)(self->private_impl.f_buf_data[7u])) << 24u));
+-    v_ret += ((uint32_t)(v_buf_u32 * 3266489917u));
+-    v_ret = (((uint32_t)(v_ret << 17u)) | (v_ret >> 15u));
+-    v_ret *= 668265263u;
+-    v_i = 8u;
+-  }
+-  if (12u <= v_n) {
+-    v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[8u])) |
+-        (((uint32_t)(self->private_impl.f_buf_data[9u])) << 8u) |
+-        (((uint32_t)(self->private_impl.f_buf_data[10u])) << 16u) |
+-        (((uint32_t)(self->private_impl.f_buf_data[11u])) << 24u));
+-    v_ret += ((uint32_t)(v_buf_u32 * 3266489917u));
+-    v_ret = (((uint32_t)(v_ret << 17u)) | (v_ret >> 15u));
+-    v_ret *= 668265263u;
+-    v_i = 12u;
++  goto exit;
++  exit:
++  if (a_dst && a_dst->data.ptr) {
++    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
+   }
+-  while (v_i < v_n) {
+-    v_ret += ((uint32_t)(((uint32_t)(self->private_impl.f_buf_data[v_i])) * 374761393u));
+-    v_ret = (((uint32_t)(v_ret << 11u)) | (v_ret >> 21u));
+-    v_ret *= 2654435761u;
+-    v_i += 1u;
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+-  v_ret ^= (v_ret >> 15u);
+-  v_ret *= 2246822519u;
+-  v_ret ^= (v_ret >> 13u);
+-  v_ret *= 3266489917u;
+-  v_ret ^= (v_ret >> 16u);
+-  return v_ret;
+-}
+-
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH32)
+-
+-#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH64)
+-
+-// ---------------- Status Codes Implementations
+ 
+-// ---------------- Private Consts
++  return status;
++}
+ 
+-#define WUFFS_XXHASH64__XXH_PRIME64_1 11400714785074694791
++// -------- func xz.decoder.decode_block_header_with_padding
+ 
+-#define WUFFS_XXHASH64__XXH_PRIME64_2 14029467366897019727
++WUFFS_BASE__GENERATED_C_CODE
++static wuffs_base__status
++wuffs_xz__decoder__decode_block_header_with_padding(
++    wuffs_xz__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-#define WUFFS_XXHASH64__XXH_PRIME64_3 1609587929392839161
++  uint8_t v_c8 = 0;
++  uint64_t v_padded_size_have = 0;
++  uint64_t v_padded_size_want = 0;
++  uint64_t v_smark = 0;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
+ 
+-#define WUFFS_XXHASH64__XXH_PRIME64_4 9650029242287828579
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
+ 
+-#define WUFFS_XXHASH64__XXH_PRIME64_5 2870177450012600261
++  uint32_t coro_susp_point = self->private_impl.p_decode_block_header_with_padding;
++  if (coro_susp_point) {
++    v_padded_size_have = self->private_data.s_decode_block_header_with_padding.v_padded_size_have;
++    v_padded_size_want = self->private_data.s_decode_block_header_with_padding.v_padded_size_want;
++  }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-#define WUFFS_XXHASH64__INITIAL_V0 6983438078262162902
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_0 = *iop_a_src++;
++      v_c8 = t_0;
++    }
++    v_padded_size_want = ((uint64_t)((((uint64_t)(v_c8)) * 4u) - 1u));
++    while (true) {
++      v_smark = ((uint64_t)(iop_a_src - io0_a_src));
++      {
++        if (a_src) {
++          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++        }
++        wuffs_base__status t_1 = wuffs_xz__decoder__decode_block_header_sans_padding(self, a_src);
++        v_status = t_1;
++        if (a_src) {
++          iop_a_src = a_src->data.ptr + a_src->meta.ri;
++        }
++      }
++      wuffs_private_impl__u64__sat_add_indirect(&v_padded_size_have, wuffs_private_impl__io__count_since(v_smark, ((uint64_t)(iop_a_src - io0_a_src))));
++      if (wuffs_base__status__is_ok(&v_status)) {
++        break;
++      }
++      status = v_status;
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
++    }
++    if (v_padded_size_have > v_padded_size_want) {
++      status = wuffs_base__make_status(wuffs_xz__error__bad_block_header);
++      goto exit;
++    }
++    while (v_padded_size_have < v_padded_size_want) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_2 = *iop_a_src++;
++        v_c8 = t_2;
++      }
++      if (v_c8 != 0u) {
++        status = wuffs_base__make_status(wuffs_xz__error__bad_block_header);
++        goto exit;
++      }
++      v_padded_size_have += 1u;
++    }
+ 
+-#define WUFFS_XXHASH64__INITIAL_V1 14029467366897019727
++    ok:
++    self->private_impl.p_decode_block_header_with_padding = 0;
++    goto exit;
++  }
+ 
+-#define WUFFS_XXHASH64__INITIAL_V2 0
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_block_header_with_padding = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_block_header_with_padding.v_padded_size_have = v_padded_size_have;
++  self->private_data.s_decode_block_header_with_padding.v_padded_size_want = v_padded_size_want;
+ 
+-#define WUFFS_XXHASH64__INITIAL_V3 7046029288634856825
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
++  }
+ 
+-// ---------------- Private Initializer Prototypes
++  return status;
++}
+ 
+-// ---------------- Private Function Prototypes
++// -------- func xz.decoder.decode_block_header_sans_padding
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_xxhash64__hasher__up(
+-    wuffs_xxhash64__hasher* self,
+-    wuffs_base__slice_u8 a_x);
+-
+-// ---------------- VTables
+-
+-const wuffs_base__hasher_u64__func_ptrs
+-wuffs_xxhash64__hasher__func_ptrs_for__wuffs_base__hasher_u64 = {
+-  (uint64_t(*)(const void*))(&wuffs_xxhash64__hasher__checksum_u64),
+-  (uint64_t(*)(const void*,
+-      uint32_t))(&wuffs_xxhash64__hasher__get_quirk),
+-  (wuffs_base__status(*)(void*,
+-      uint32_t,
+-      uint64_t))(&wuffs_xxhash64__hasher__set_quirk),
+-  (wuffs_base__empty_struct(*)(void*,
+-      wuffs_base__slice_u8))(&wuffs_xxhash64__hasher__update),
+-  (uint64_t(*)(void*,
+-      wuffs_base__slice_u8))(&wuffs_xxhash64__hasher__update_u64),
+-};
++static wuffs_base__status
++wuffs_xz__decoder__decode_block_header_sans_padding(
++    wuffs_xz__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-// ---------------- Initializer Implementations
++  uint8_t v_c8 = 0;
++  uint32_t v_c32 = 0;
++  uint32_t v_alignment = 0;
++  uint8_t v_flags = 0;
++  uint8_t v_filter_id = 0;
++  wuffs_base__status v_status = wuffs_base__make_status(NULL);
++  uint32_t v_shift = 0;
++  uint32_t v_f = 0;
++  uint32_t v_k = 0;
+ 
+-wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
+-wuffs_xxhash64__hasher__initialize(
+-    wuffs_xxhash64__hasher* self,
+-    size_t sizeof_star_self,
+-    uint64_t wuffs_version,
+-    uint32_t options){
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (sizeof(*self) != sizeof_star_self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+-  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
+-      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
++
++  uint32_t coro_susp_point = self->private_impl.p_decode_block_header_sans_padding;
++  if (coro_susp_point) {
++    v_flags = self->private_data.s_decode_block_header_sans_padding.v_flags;
++    v_filter_id = self->private_data.s_decode_block_header_sans_padding.v_filter_id;
++    v_shift = self->private_data.s_decode_block_header_sans_padding.v_shift;
++    v_f = self->private_data.s_decode_block_header_sans_padding.v_f;
+   }
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
+-    // The whole point of this if-check is to detect an uninitialized *self.
+-    // We disable the warning on GCC. Clang-5.0 does not have this warning.
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic push
+-#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+-#endif
+-    if (self->private_impl.magic != 0) {
+-      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_0 = *iop_a_src++;
++      v_flags = t_0;
+     }
+-#if !defined(__clang__) && defined(__GNUC__)
+-#pragma GCC diagnostic pop
+-#endif
+-  } else {
+-    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
+-      memset(self, 0, sizeof(*self));
+-      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
++    self->private_impl.f_num_non_final_filters = ((uint32_t)(((uint8_t)(v_flags & 3u))));
++    if (((uint8_t)(v_flags & 60u)) != 0u) {
++      status = wuffs_base__make_status(wuffs_xz__error__bad_block_header);
++      goto exit;
++    }
++    self->private_impl.f_block_has_compressed_size = (((uint8_t)(v_flags & 64u)) != 0u);
++    if (self->private_impl.f_block_has_compressed_size) {
++      self->private_impl.f_block_compressed_size = 0u;
++      v_shift = 0u;
++      while (true) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_1 = *iop_a_src++;
++          v_c8 = t_1;
++        }
++        if (v_shift <= 56u) {
++          self->private_impl.f_block_compressed_size |= (((uint64_t)(((uint8_t)(v_c8 & 127u)))) << v_shift);
++          if (v_c8 >= 128u) {
++            v_shift += 7u;
++            continue;
++          } else if ((v_c8 == 0u) && (v_shift > 0u)) {
++            status = wuffs_base__make_status(wuffs_xz__error__bad_block_header);
++            goto exit;
++          }
++          break;
++        } else if (v_c8 != 1u) {
++          status = wuffs_base__make_status(wuffs_xz__error__bad_block_header);
++          goto exit;
++        }
++        self->private_impl.f_block_compressed_size |= (((uint64_t)(1u)) << 63u);
++        break;
++      }
++    }
++    self->private_impl.f_block_has_uncompressed_size = (((uint8_t)(v_flags & 128u)) != 0u);
++    if (self->private_impl.f_block_has_uncompressed_size) {
++      self->private_impl.f_block_uncompressed_size = 0u;
++      v_shift = 0u;
++      while (true) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_2 = *iop_a_src++;
++          v_c8 = t_2;
++        }
++        if (v_shift <= 56u) {
++          self->private_impl.f_block_uncompressed_size |= (((uint64_t)(((uint8_t)(v_c8 & 127u)))) << v_shift);
++          if (v_c8 >= 128u) {
++            v_shift += 7u;
++            continue;
++          } else if ((v_c8 == 0u) && (v_shift > 0u)) {
++            status = wuffs_base__make_status(wuffs_xz__error__bad_block_header);
++            goto exit;
++          }
++          break;
++        } else if (v_c8 != 1u) {
++          status = wuffs_base__make_status(wuffs_xz__error__bad_block_header);
++          goto exit;
++        }
++        self->private_impl.f_block_uncompressed_size |= (((uint64_t)(1u)) << 63u);
++        break;
++      }
++    }
++    self->private_impl.f_bcj_x86_prev_mask = 0u;
++    self->private_impl.choosy_apply_non_final_filters = (
++        &wuffs_xz__decoder__apply_non_final_filters__choosy_default);
++    v_f = 0u;
++    while (v_f < self->private_impl.f_num_non_final_filters) {
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_3 = *iop_a_src++;
++        v_filter_id = t_3;
++      }
++      if (v_filter_id == 33u) {
++        status = wuffs_base__make_status(wuffs_xz__error__bad_filter);
++        goto exit;
++      } else if (v_filter_id == 3u) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_4 = *iop_a_src++;
++          v_c8 = t_4;
++        }
++        if (v_c8 != 1u) {
++          status = wuffs_base__make_status(wuffs_xz__error__bad_filter);
++          goto exit;
++        }
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_5 = *iop_a_src++;
++          v_c8 = t_5;
++        }
++        self->private_impl.f_filters[v_f] = ((((uint32_t)(v_c8)) << 8u) | 3u);
++        v_k = 0u;
++        while (v_k < 256u) {
++          self->private_data.f_filter_data[v_f][v_k] = 0u;
++          v_k += 1u;
++        }
++      } else if ((v_filter_id < 3u) || (11u < v_filter_id)) {
++        status = wuffs_base__make_status(wuffs_xz__error__unsupported_filter);
++        goto exit;
++      } else if (v_f != 0u) {
++        status = wuffs_base__make_status(wuffs_xz__error__unsupported_filter_combination);
++        goto exit;
++      } else {
++        self->private_impl.f_filters[v_f] = ((uint32_t)(v_filter_id));
++        if (v_filter_id == 4u) {
++          self->private_impl.choosy_apply_non_final_filters = (
++              &wuffs_xz__decoder__apply_filter_04_x86);
++        } else if (v_filter_id == 5u) {
++          self->private_impl.choosy_apply_non_final_filters = (
++              &wuffs_xz__decoder__apply_filter_05_powerpc);
++        } else if (v_filter_id == 6u) {
++          self->private_impl.choosy_apply_non_final_filters = (
++              &wuffs_xz__decoder__apply_filter_06_ia64);
++        } else if (v_filter_id == 7u) {
++          self->private_impl.choosy_apply_non_final_filters = (
++              &wuffs_xz__decoder__apply_filter_07_arm);
++        } else if (v_filter_id == 8u) {
++          self->private_impl.choosy_apply_non_final_filters = (
++              &wuffs_xz__decoder__apply_filter_08_armthumb);
++        } else if (v_filter_id == 9u) {
++          self->private_impl.choosy_apply_non_final_filters = (
++              &wuffs_xz__decoder__apply_filter_09_sparc);
++        } else if (v_filter_id == 10u) {
++          self->private_impl.choosy_apply_non_final_filters = (
++              &wuffs_xz__decoder__apply_filter_0a_arm64);
++        } else {
++          self->private_impl.choosy_apply_non_final_filters = (
++              &wuffs_xz__decoder__apply_filter_0b_riscv);
++        }
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_6 = *iop_a_src++;
++          v_c8 = t_6;
++        }
++        if (v_c8 == 0u) {
++          self->private_impl.f_bcj_pos = 0u;
++        } else if (v_c8 == 4u) {
++          {
++            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
++            uint32_t t_7;
++            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++              t_7 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++              iop_a_src += 4;
++            } else {
++              self->private_data.s_decode_block_header_sans_padding.scratch = 0;
++              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
++              while (true) {
++                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++                  goto suspend;
++                }
++                uint64_t* scratch = &self->private_data.s_decode_block_header_sans_padding.scratch;
++                uint32_t num_bits_7 = ((uint32_t)(*scratch >> 56));
++                *scratch <<= 8;
++                *scratch >>= 8;
++                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_7;
++                if (num_bits_7 == 24) {
++                  t_7 = ((uint32_t)(*scratch));
++                  break;
++                }
++                num_bits_7 += 8u;
++                *scratch |= ((uint64_t)(num_bits_7)) << 56;
++              }
++            }
++            v_c32 = t_7;
++          }
++          v_alignment = ((uint32_t)(WUFFS_XZ__BCJ_OFFSET_ALIGNMENT[v_filter_id]));
++          if (v_alignment > 0u) {
++            if ((v_c32 % v_alignment) != 0u) {
++              status = wuffs_base__make_status(wuffs_xz__error__bad_bcj_offset);
++              goto exit;
++            }
++          }
++          self->private_impl.f_bcj_pos = v_c32;
++        } else {
++          status = wuffs_base__make_status(wuffs_xz__error__unsupported_filter);
++          goto exit;
++        }
++      }
++      v_f += 1u;
++    }
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
++      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++        goto suspend;
++      }
++      uint8_t t_8 = *iop_a_src++;
++      v_filter_id = t_8;
++    }
++    if (v_filter_id == 33u) {
++      if (self->private_impl.f_lzma_needs_reset) {
++        wuffs_private_impl__ignore_status(wuffs_lzma__decoder__initialize(&self->private_data.f_lzma,
++            sizeof (wuffs_lzma__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
++      }
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_9 = *iop_a_src++;
++        v_c8 = t_9;
++      }
++      if (v_c8 != 1u) {
++        status = wuffs_base__make_status(wuffs_xz__error__bad_filter);
++        goto exit;
++      }
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_10 = *iop_a_src++;
++        v_c8 = t_10;
++      }
++      v_status = wuffs_lzma__decoder__set_quirk(&self->private_data.f_lzma, 1348001793u, (2u | (((uint64_t)(v_c8)) << 8u)));
++      if ( ! wuffs_base__status__is_ok(&v_status)) {
++        status = wuffs_base__make_status(wuffs_xz__error__bad_filter);
++        goto exit;
++      }
++    } else if ((v_filter_id < 3u) || (11u < v_filter_id)) {
++      status = wuffs_base__make_status(wuffs_xz__error__unsupported_filter);
++      goto exit;
+     } else {
+-      memset(&(self->private_impl), 0, sizeof(self->private_impl));
++      status = wuffs_base__make_status(wuffs_xz__error__bad_filter);
++      goto exit;
+     }
+-  }
+ 
+-  self->private_impl.magic = WUFFS_BASE__MAGIC;
+-  self->private_impl.vtable_for__wuffs_base__hasher_u64.vtable_name =
+-      wuffs_base__hasher_u64__vtable_name;
+-  self->private_impl.vtable_for__wuffs_base__hasher_u64.function_pointers =
+-      (const void*)(&wuffs_xxhash64__hasher__func_ptrs_for__wuffs_base__hasher_u64);
+-  return wuffs_base__make_status(NULL);
+-}
+-
+-wuffs_xxhash64__hasher*
+-wuffs_xxhash64__hasher__alloc(void) {
+-  wuffs_xxhash64__hasher* x =
+-      (wuffs_xxhash64__hasher*)(calloc(sizeof(wuffs_xxhash64__hasher), 1));
+-  if (!x) {
+-    return NULL;
+-  }
+-  if (wuffs_xxhash64__hasher__initialize(
+-      x, sizeof(wuffs_xxhash64__hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
+-    free(x);
+-    return NULL;
++    goto ok;
++    ok:
++    self->private_impl.p_decode_block_header_sans_padding = 0;
++    goto exit;
+   }
+-  return x;
+-}
+-
+-size_t
+-sizeof__wuffs_xxhash64__hasher(void) {
+-  return sizeof(wuffs_xxhash64__hasher);
+-}
+ 
+-// ---------------- Function Implementations
+-
+-// -------- func xxhash64.hasher.get_quirk
++  goto suspend;
++  suspend:
++  self->private_impl.p_decode_block_header_sans_padding = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_decode_block_header_sans_padding.v_flags = v_flags;
++  self->private_data.s_decode_block_header_sans_padding.v_filter_id = v_filter_id;
++  self->private_data.s_decode_block_header_sans_padding.v_shift = v_shift;
++  self->private_data.s_decode_block_header_sans_padding.v_f = v_f;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_xxhash64__hasher__get_quirk(
+-    const wuffs_xxhash64__hasher* self,
+-    uint32_t a_key) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+ 
+-  return 0u;
++  return status;
+ }
+ 
+-// -------- func xxhash64.hasher.set_quirk
++// -------- func xz.decoder.verify_index
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__status
+-wuffs_xxhash64__hasher__set_quirk(
+-    wuffs_xxhash64__hasher* self,
+-    uint32_t a_key,
+-    uint64_t a_value) {
+-  if (!self) {
+-    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_status(
+-        (self->private_impl.magic == WUFFS_BASE__DISABLED)
+-        ? wuffs_base__error__disabled_by_previous_error
+-        : wuffs_base__error__initialize_not_called);
+-  }
+-
+-  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
+-}
++static wuffs_base__status
++wuffs_xz__decoder__verify_index(
++    wuffs_xz__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-// -------- func xxhash64.hasher.update
++  uint8_t v_c8 = 0;
++  uint32_t v_shift = 0;
++  uint32_t v_hash = 0;
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
+-wuffs_xxhash64__hasher__update(
+-    wuffs_xxhash64__hasher* self,
+-    wuffs_base__slice_u8 a_x) {
+-  if (!self) {
+-    return wuffs_base__make_empty_struct();
+-  }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return wuffs_base__make_empty_struct();
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
+   }
+ 
+-  if ((self->private_impl.f_length_modulo_u64 == 0u) &&  ! self->private_impl.f_length_overflows_u64) {
+-    self->private_impl.f_v0 = 6983438078262162902u;
+-    self->private_impl.f_v1 = 14029467366897019727u;
+-    self->private_impl.f_v2 = 0u;
+-    self->private_impl.f_v3 = 7046029288634856825u;
++  uint32_t coro_susp_point = self->private_impl.p_verify_index;
++  if (coro_susp_point) {
++    v_shift = self->private_data.s_verify_index.v_shift;
+   }
+-  wuffs_xxhash64__hasher__up(self, a_x);
+-  return wuffs_base__make_empty_struct();
+-}
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
+ 
+-// -------- func xxhash64.hasher.update_u64
++    if ( ! self->private_impl.f_started_verify_index) {
++      self->private_impl.f_started_verify_index = true;
++      {
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++          goto suspend;
++        }
++        uint8_t t_0 = *iop_a_src++;
++        v_c8 = t_0;
++      }
++      if (v_c8 != 0u) {
++        status = wuffs_base__make_status(wuffs_xz__error__bad_index);
++        goto exit;
++      }
++      self->private_impl.f_num_index_blocks = 0u;
++      v_shift = 0u;
++      while (true) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_1 = *iop_a_src++;
++          v_c8 = t_1;
++        }
++        if (v_shift <= 56u) {
++          self->private_impl.f_num_index_blocks |= (((uint64_t)(((uint8_t)(v_c8 & 127u)))) << v_shift);
++          if (v_c8 >= 128u) {
++            v_shift += 7u;
++            continue;
++          } else if ((v_c8 == 0u) && (v_shift > 0u)) {
++            status = wuffs_base__make_status(wuffs_xz__error__bad_index);
++            goto exit;
++          }
++          break;
++        } else if (v_c8 != 1u) {
++          status = wuffs_base__make_status(wuffs_xz__error__bad_index);
++          goto exit;
++        }
++        self->private_impl.f_num_index_blocks |= (((uint64_t)(1u)) << 63u);
++        break;
++      }
++      if (self->private_impl.f_num_index_blocks != self->private_impl.f_num_actual_blocks) {
++        status = wuffs_base__make_status(wuffs_xz__error__bad_index);
++        goto exit;
++      }
++    }
++    while (self->private_impl.f_num_index_blocks > 0u) {
++      self->private_impl.f_num_index_blocks -= 1u;
++      self->private_impl.f_index_block_compressed_size = 0u;
++      v_shift = 0u;
++      while (true) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_2 = *iop_a_src++;
++          v_c8 = t_2;
++        }
++        if (v_shift <= 56u) {
++          self->private_impl.f_index_block_compressed_size |= (((uint64_t)(((uint8_t)(v_c8 & 127u)))) << v_shift);
++          if (v_c8 >= 128u) {
++            v_shift += 7u;
++            continue;
++          } else if ((v_c8 == 0u) && (v_shift > 0u)) {
++            status = wuffs_base__make_status(wuffs_xz__error__bad_index);
++            goto exit;
++          }
++          break;
++        } else if (v_c8 != 1u) {
++          status = wuffs_base__make_status(wuffs_xz__error__bad_index);
++          goto exit;
++        }
++        self->private_impl.f_index_block_compressed_size |= (((uint64_t)(1u)) << 63u);
++        break;
++      }
++      self->private_impl.f_index_block_uncompressed_size = 0u;
++      v_shift = 0u;
++      while (true) {
++        {
++          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint8_t t_3 = *iop_a_src++;
++          v_c8 = t_3;
++        }
++        if (v_shift <= 56u) {
++          self->private_impl.f_index_block_uncompressed_size |= (((uint64_t)(((uint8_t)(v_c8 & 127u)))) << v_shift);
++          if (v_c8 >= 128u) {
++            v_shift += 7u;
++            continue;
++          } else if ((v_c8 == 0u) && (v_shift > 0u)) {
++            status = wuffs_base__make_status(wuffs_xz__error__bad_index);
++            goto exit;
++          }
++          break;
++        } else if (v_c8 != 1u) {
++          status = wuffs_base__make_status(wuffs_xz__error__bad_index);
++          goto exit;
++        }
++        self->private_impl.f_index_block_uncompressed_size |= (((uint64_t)(1u)) << 63u);
++        break;
++      }
++      self->private_impl.f_verification_want_total_sizes[0u] += self->private_impl.f_index_block_compressed_size;
++      v_hash = ((uint32_t)((self->private_impl.f_index_block_compressed_size ^ (self->private_impl.f_index_block_compressed_size >> 32u))));
++      v_hash *= 3432918353u;
++      v_hash = (((uint32_t)(v_hash << 15u)) | (v_hash >> 17u));
++      v_hash *= 461845907u;
++      v_hash ^= self->private_impl.f_verification_want_hashed_sizes[0u];
++      v_hash = (((uint32_t)(v_hash << 13u)) | (v_hash >> 19u));
++      self->private_impl.f_verification_want_hashed_sizes[0u] = ((uint32_t)(((uint32_t)(v_hash * 5u)) + 3864292196u));
++      self->private_impl.f_verification_want_total_sizes[1u] += self->private_impl.f_index_block_uncompressed_size;
++      v_hash = ((uint32_t)((self->private_impl.f_index_block_uncompressed_size ^ (self->private_impl.f_index_block_uncompressed_size >> 32u))));
++      v_hash *= 3432918353u;
++      v_hash = (((uint32_t)(v_hash << 15u)) | (v_hash >> 17u));
++      v_hash *= 461845907u;
++      v_hash ^= self->private_impl.f_verification_want_hashed_sizes[1u];
++      v_hash = (((uint32_t)(v_hash << 13u)) | (v_hash >> 19u));
++      self->private_impl.f_verification_want_hashed_sizes[1u] = ((uint32_t)(((uint32_t)(v_hash * 5u)) + 3864292196u));
++    }
++    if ((self->private_impl.f_verification_have_hashed_sizes[0u] != self->private_impl.f_verification_want_hashed_sizes[0u]) ||
++        (self->private_impl.f_verification_have_hashed_sizes[1u] != self->private_impl.f_verification_want_hashed_sizes[1u]) ||
++        (self->private_impl.f_verification_have_total_sizes[0u] != self->private_impl.f_verification_want_total_sizes[0u]) ||
++        (self->private_impl.f_verification_have_total_sizes[1u] != self->private_impl.f_verification_want_total_sizes[1u])) {
++      status = wuffs_base__make_status(wuffs_xz__error__bad_index);
++      goto exit;
++    }
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_xxhash64__hasher__update_u64(
+-    wuffs_xxhash64__hasher* self,
+-    wuffs_base__slice_u8 a_x) {
+-  if (!self) {
+-    return 0;
++    goto ok;
++    ok:
++    self->private_impl.p_verify_index = 0;
++    goto exit;
+   }
+-  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
+-    return 0;
++
++  goto suspend;
++  suspend:
++  self->private_impl.p_verify_index = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
++  self->private_data.s_verify_index.v_shift = v_shift;
++
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+ 
+-  wuffs_xxhash64__hasher__update(self, a_x);
+-  return wuffs_xxhash64__hasher__checksum_u64(self);
++  return status;
+ }
+ 
+-// -------- func xxhash64.hasher.up
++// -------- func xz.decoder.verify_footer
+ 
+ WUFFS_BASE__GENERATED_C_CODE
+-static wuffs_base__empty_struct
+-wuffs_xxhash64__hasher__up(
+-    wuffs_xxhash64__hasher* self,
+-    wuffs_base__slice_u8 a_x) {
+-  uint64_t v_new_lmu = 0;
+-  uint64_t v_buf_u64 = 0;
+-  uint32_t v_buf_len = 0;
+-  uint64_t v_v0 = 0;
+-  uint64_t v_v1 = 0;
+-  uint64_t v_v2 = 0;
+-  uint64_t v_v3 = 0;
+-  wuffs_base__slice_u8 v_p = {0};
++static wuffs_base__status
++wuffs_xz__decoder__verify_footer(
++    wuffs_xz__decoder* self,
++    wuffs_base__io_buffer* a_src) {
++  wuffs_base__status status = wuffs_base__make_status(NULL);
+ 
+-  v_new_lmu = ((uint64_t)(self->private_impl.f_length_modulo_u64 + ((uint64_t)(a_x.len))));
+-  self->private_impl.f_length_overflows_u64 = ((v_new_lmu < self->private_impl.f_length_modulo_u64) || self->private_impl.f_length_overflows_u64);
+-  self->private_impl.f_length_modulo_u64 = v_new_lmu;
+-  while (true) {
+-    if (self->private_impl.f_buf_len >= 32u) {
+-      v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[0u])) |
+-          (((uint64_t)(self->private_impl.f_buf_data[1u])) << 8u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[2u])) << 16u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[3u])) << 24u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[4u])) << 32u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[5u])) << 40u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[6u])) << 48u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[7u])) << 56u));
+-      v_v0 = ((uint64_t)(self->private_impl.f_v0 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
+-      v_v0 = (((uint64_t)(v_v0 << 31u)) | (v_v0 >> 33u));
+-      self->private_impl.f_v0 = ((uint64_t)(v_v0 * 11400714785074694791u));
+-      v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[8u])) |
+-          (((uint64_t)(self->private_impl.f_buf_data[9u])) << 8u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[10u])) << 16u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[11u])) << 24u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[12u])) << 32u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[13u])) << 40u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[14u])) << 48u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[15u])) << 56u));
+-      v_v1 = ((uint64_t)(self->private_impl.f_v1 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
+-      v_v1 = (((uint64_t)(v_v1 << 31u)) | (v_v1 >> 33u));
+-      self->private_impl.f_v1 = ((uint64_t)(v_v1 * 11400714785074694791u));
+-      v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[16u])) |
+-          (((uint64_t)(self->private_impl.f_buf_data[17u])) << 8u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[18u])) << 16u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[19u])) << 24u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[20u])) << 32u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[21u])) << 40u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[22u])) << 48u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[23u])) << 56u));
+-      v_v2 = ((uint64_t)(self->private_impl.f_v2 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
+-      v_v2 = (((uint64_t)(v_v2 << 31u)) | (v_v2 >> 33u));
+-      self->private_impl.f_v2 = ((uint64_t)(v_v2 * 11400714785074694791u));
+-      v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[24u])) |
+-          (((uint64_t)(self->private_impl.f_buf_data[25u])) << 8u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[26u])) << 16u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[27u])) << 24u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[28u])) << 32u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[29u])) << 40u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[30u])) << 48u) |
+-          (((uint64_t)(self->private_impl.f_buf_data[31u])) << 56u));
+-      v_v3 = ((uint64_t)(self->private_impl.f_v3 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
+-      v_v3 = (((uint64_t)(v_v3 << 31u)) | (v_v3 >> 33u));
+-      self->private_impl.f_v3 = ((uint64_t)(v_v3 * 11400714785074694791u));
+-      self->private_impl.f_buf_len = 0u;
+-      break;
++  uint32_t v_c32 = 0;
++
++  const uint8_t* iop_a_src = NULL;
++  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
++  if (a_src && a_src->data.ptr) {
++    io0_a_src = a_src->data.ptr;
++    io1_a_src = io0_a_src + a_src->meta.ri;
++    iop_a_src = io1_a_src;
++    io2_a_src = io0_a_src + a_src->meta.wi;
++  }
++
++  uint32_t coro_susp_point = self->private_impl.p_verify_footer;
++  switch (coro_susp_point) {
++    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
++
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
++      uint32_t t_0;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
++        t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
++        iop_a_src += 4;
++      } else {
++        self->private_data.s_verify_footer.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_verify_footer.scratch;
++          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
++          *scratch <<= 8;
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
++          if (num_bits_0 == 24) {
++            t_0 = ((uint32_t)(*scratch));
++            break;
++          }
++          num_bits_0 += 8u;
++          *scratch |= ((uint64_t)(num_bits_0)) << 56;
++        }
++      }
++      v_c32 = t_0;
+     }
+-    if (((uint64_t)(a_x.len)) <= 0u) {
+-      return wuffs_base__make_empty_struct();
++    if (v_c32 != ((uint32_t)(self->private_impl.f_backwards_size))) {
++      status = wuffs_base__make_status(wuffs_xz__error__bad_footer);
++      goto exit;
+     }
+-    self->private_impl.f_buf_data[self->private_impl.f_buf_len] = a_x.ptr[0u];
+-    self->private_impl.f_buf_len += 1u;
+-    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
+-  }
+-  v_buf_len = (self->private_impl.f_buf_len & 31u);
+-  v_v0 = self->private_impl.f_v0;
+-  v_v1 = self->private_impl.f_v1;
+-  v_v2 = self->private_impl.f_v2;
+-  v_v3 = self->private_impl.f_v3;
+-  {
+-    wuffs_base__slice_u8 i_slice_p = a_x;
+-    v_p.ptr = i_slice_p.ptr;
+-    v_p.len = 32;
+-    uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32);
+-    while (v_p.ptr < i_end0_p) {
+-      v_buf_u64 = (((uint64_t)(v_p.ptr[0u])) |
+-          (((uint64_t)(v_p.ptr[1u])) << 8u) |
+-          (((uint64_t)(v_p.ptr[2u])) << 16u) |
+-          (((uint64_t)(v_p.ptr[3u])) << 24u) |
+-          (((uint64_t)(v_p.ptr[4u])) << 32u) |
+-          (((uint64_t)(v_p.ptr[5u])) << 40u) |
+-          (((uint64_t)(v_p.ptr[6u])) << 48u) |
+-          (((uint64_t)(v_p.ptr[7u])) << 56u));
+-      v_v0 = ((uint64_t)(v_v0 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
+-      v_v0 = (((uint64_t)(v_v0 << 31u)) | (v_v0 >> 33u));
+-      v_v0 = ((uint64_t)(v_v0 * 11400714785074694791u));
+-      v_buf_u64 = (((uint64_t)(v_p.ptr[8u])) |
+-          (((uint64_t)(v_p.ptr[9u])) << 8u) |
+-          (((uint64_t)(v_p.ptr[10u])) << 16u) |
+-          (((uint64_t)(v_p.ptr[11u])) << 24u) |
+-          (((uint64_t)(v_p.ptr[12u])) << 32u) |
+-          (((uint64_t)(v_p.ptr[13u])) << 40u) |
+-          (((uint64_t)(v_p.ptr[14u])) << 48u) |
+-          (((uint64_t)(v_p.ptr[15u])) << 56u));
+-      v_v1 = ((uint64_t)(v_v1 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
+-      v_v1 = (((uint64_t)(v_v1 << 31u)) | (v_v1 >> 33u));
+-      v_v1 = ((uint64_t)(v_v1 * 11400714785074694791u));
+-      v_buf_u64 = (((uint64_t)(v_p.ptr[16u])) |
+-          (((uint64_t)(v_p.ptr[17u])) << 8u) |
+-          (((uint64_t)(v_p.ptr[18u])) << 16u) |
+-          (((uint64_t)(v_p.ptr[19u])) << 24u) |
+-          (((uint64_t)(v_p.ptr[20u])) << 32u) |
+-          (((uint64_t)(v_p.ptr[21u])) << 40u) |
+-          (((uint64_t)(v_p.ptr[22u])) << 48u) |
+-          (((uint64_t)(v_p.ptr[23u])) << 56u));
+-      v_v2 = ((uint64_t)(v_v2 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
+-      v_v2 = (((uint64_t)(v_v2 << 31u)) | (v_v2 >> 33u));
+-      v_v2 = ((uint64_t)(v_v2 * 11400714785074694791u));
+-      v_buf_u64 = (((uint64_t)(v_p.ptr[24u])) |
+-          (((uint64_t)(v_p.ptr[25u])) << 8u) |
+-          (((uint64_t)(v_p.ptr[26u])) << 16u) |
+-          (((uint64_t)(v_p.ptr[27u])) << 24u) |
+-          (((uint64_t)(v_p.ptr[28u])) << 32u) |
+-          (((uint64_t)(v_p.ptr[29u])) << 40u) |
+-          (((uint64_t)(v_p.ptr[30u])) << 48u) |
+-          (((uint64_t)(v_p.ptr[31u])) << 56u));
+-      v_v3 = ((uint64_t)(v_v3 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
+-      v_v3 = (((uint64_t)(v_v3 << 31u)) | (v_v3 >> 33u));
+-      v_v3 = ((uint64_t)(v_v3 * 11400714785074694791u));
+-      v_p.ptr += 32;
++    {
++      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
++      uint32_t t_1;
++      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
++        t_1 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
++        iop_a_src += 2;
++      } else {
++        self->private_data.s_verify_footer.scratch = 0;
++        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
++        while (true) {
++          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
++            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
++            goto suspend;
++          }
++          uint64_t* scratch = &self->private_data.s_verify_footer.scratch;
++          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
++          *scratch <<= 8;
++          *scratch >>= 8;
++          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
++          if (num_bits_1 == 8) {
++            t_1 = ((uint32_t)(*scratch));
++            break;
++          }
++          num_bits_1 += 8u;
++          *scratch |= ((uint64_t)(num_bits_1)) << 56;
++        }
++      }
++      v_c32 = t_1;
+     }
+-    v_p.len = 1;
+-    uint8_t* i_end1_p = i_slice_p.ptr + i_slice_p.len;
+-    while (v_p.ptr < i_end1_p) {
+-      self->private_impl.f_buf_data[v_buf_len] = v_p.ptr[0u];
+-      v_buf_len = ((v_buf_len + 1u) & 31u);
+-      v_p.ptr += 1;
++    if (v_c32 != ((uint32_t)(self->private_impl.f_flags))) {
++      status = wuffs_base__make_status(wuffs_xz__error__bad_footer);
++      goto exit;
+     }
+-    v_p.len = 0;
+-  }
+-  self->private_impl.f_buf_len = v_buf_len;
+-  self->private_impl.f_v0 = v_v0;
+-  self->private_impl.f_v1 = v_v1;
+-  self->private_impl.f_v2 = v_v2;
+-  self->private_impl.f_v3 = v_v3;
+-  return wuffs_base__make_empty_struct();
+-}
+-
+-// -------- func xxhash64.hasher.checksum_u64
+ 
+-WUFFS_BASE__GENERATED_C_CODE
+-WUFFS_BASE__MAYBE_STATIC uint64_t
+-wuffs_xxhash64__hasher__checksum_u64(
+-    const wuffs_xxhash64__hasher* self) {
+-  if (!self) {
+-    return 0;
+-  }
+-  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
+-      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
+-    return 0;
++    goto ok;
++    ok:
++    self->private_impl.p_verify_footer = 0;
++    goto exit;
+   }
+ 
+-  uint64_t v_ret = 0;
+-  uint64_t v_v0 = 0;
+-  uint64_t v_v1 = 0;
+-  uint64_t v_v2 = 0;
+-  uint64_t v_v3 = 0;
+-  uint32_t v_i = 0;
+-  uint32_t v_i8 = 0;
+-  uint32_t v_n = 0;
+-  uint32_t v_buf_u32 = 0;
+-  uint64_t v_buf_u64 = 0;
++  goto suspend;
++  suspend:
++  self->private_impl.p_verify_footer = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
+ 
+-  if ((self->private_impl.f_length_modulo_u64 >= 32u) || self->private_impl.f_length_overflows_u64) {
+-    v_ret += (((uint64_t)(self->private_impl.f_v0 << 1u)) | (self->private_impl.f_v0 >> 63u));
+-    v_ret += (((uint64_t)(self->private_impl.f_v1 << 7u)) | (self->private_impl.f_v1 >> 57u));
+-    v_ret += (((uint64_t)(self->private_impl.f_v2 << 12u)) | (self->private_impl.f_v2 >> 52u));
+-    v_ret += (((uint64_t)(self->private_impl.f_v3 << 18u)) | (self->private_impl.f_v3 >> 46u));
+-    v_v0 = ((uint64_t)(self->private_impl.f_v0 * 14029467366897019727u));
+-    v_v0 = (((uint64_t)(v_v0 << 31u)) | (v_v0 >> 33u));
+-    v_v0 *= 11400714785074694791u;
+-    v_v1 = ((uint64_t)(self->private_impl.f_v1 * 14029467366897019727u));
+-    v_v1 = (((uint64_t)(v_v1 << 31u)) | (v_v1 >> 33u));
+-    v_v1 *= 11400714785074694791u;
+-    v_v2 = ((uint64_t)(self->private_impl.f_v2 * 14029467366897019727u));
+-    v_v2 = (((uint64_t)(v_v2 << 31u)) | (v_v2 >> 33u));
+-    v_v2 *= 11400714785074694791u;
+-    v_v3 = ((uint64_t)(self->private_impl.f_v3 * 14029467366897019727u));
+-    v_v3 = (((uint64_t)(v_v3 << 31u)) | (v_v3 >> 33u));
+-    v_v3 *= 11400714785074694791u;
+-    v_ret = ((uint64_t)(((uint64_t)((v_ret ^ v_v0) * 11400714785074694791u)) + 9650029242287828579u));
+-    v_ret = ((uint64_t)(((uint64_t)((v_ret ^ v_v1) * 11400714785074694791u)) + 9650029242287828579u));
+-    v_ret = ((uint64_t)(((uint64_t)((v_ret ^ v_v2) * 11400714785074694791u)) + 9650029242287828579u));
+-    v_ret = ((uint64_t)(((uint64_t)((v_ret ^ v_v3) * 11400714785074694791u)) + 9650029242287828579u));
+-    v_ret += self->private_impl.f_length_modulo_u64;
+-  } else {
+-    v_ret += 2870177450012600261u;
+-    v_ret += self->private_impl.f_length_modulo_u64;
+-  }
+-  v_n = 32u;
+-  v_n = wuffs_base__u32__min(v_n, self->private_impl.f_buf_len);
+-  if (8u <= v_n) {
+-    v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[0u])) |
+-        (((uint64_t)(self->private_impl.f_buf_data[1u])) << 8u) |
+-        (((uint64_t)(self->private_impl.f_buf_data[2u])) << 16u) |
+-        (((uint64_t)(self->private_impl.f_buf_data[3u])) << 24u) |
+-        (((uint64_t)(self->private_impl.f_buf_data[4u])) << 32u) |
+-        (((uint64_t)(self->private_impl.f_buf_data[5u])) << 40u) |
+-        (((uint64_t)(self->private_impl.f_buf_data[6u])) << 48u) |
+-        (((uint64_t)(self->private_impl.f_buf_data[7u])) << 56u));
+-    v_buf_u64 *= 14029467366897019727u;
+-    v_buf_u64 = (((uint64_t)(v_buf_u64 << 31u)) | (v_buf_u64 >> 33u));
+-    v_buf_u64 *= 11400714785074694791u;
+-    v_ret ^= v_buf_u64;
+-    v_ret = (((uint64_t)(v_ret << 27u)) | (v_ret >> 37u));
+-    v_ret *= 11400714785074694791u;
+-    v_ret += 9650029242287828579u;
+-    v_i = 8u;
+-  }
+-  if (16u <= v_n) {
+-    v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[8u])) |
+-        (((uint64_t)(self->private_impl.f_buf_data[9u])) << 8u) |
+-        (((uint64_t)(self->private_impl.f_buf_data[10u])) << 16u) |
+-        (((uint64_t)(self->private_impl.f_buf_data[11u])) << 24u) |
+-        (((uint64_t)(self->private_impl.f_buf_data[12u])) << 32u) |
+-        (((uint64_t)(self->private_impl.f_buf_data[13u])) << 40u) |
+-        (((uint64_t)(self->private_impl.f_buf_data[14u])) << 48u) |
+-        (((uint64_t)(self->private_impl.f_buf_data[15u])) << 56u));
+-    v_buf_u64 *= 14029467366897019727u;
+-    v_buf_u64 = (((uint64_t)(v_buf_u64 << 31u)) | (v_buf_u64 >> 33u));
+-    v_buf_u64 *= 11400714785074694791u;
+-    v_ret ^= v_buf_u64;
+-    v_ret = (((uint64_t)(v_ret << 27u)) | (v_ret >> 37u));
+-    v_ret *= 11400714785074694791u;
+-    v_ret += 9650029242287828579u;
+-    v_i = 16u;
+-  }
+-  if (24u <= v_n) {
+-    v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[16u])) |
+-        (((uint64_t)(self->private_impl.f_buf_data[17u])) << 8u) |
+-        (((uint64_t)(self->private_impl.f_buf_data[18u])) << 16u) |
+-        (((uint64_t)(self->private_impl.f_buf_data[19u])) << 24u) |
+-        (((uint64_t)(self->private_impl.f_buf_data[20u])) << 32u) |
+-        (((uint64_t)(self->private_impl.f_buf_data[21u])) << 40u) |
+-        (((uint64_t)(self->private_impl.f_buf_data[22u])) << 48u) |
+-        (((uint64_t)(self->private_impl.f_buf_data[23u])) << 56u));
+-    v_buf_u64 *= 14029467366897019727u;
+-    v_buf_u64 = (((uint64_t)(v_buf_u64 << 31u)) | (v_buf_u64 >> 33u));
+-    v_buf_u64 *= 11400714785074694791u;
+-    v_ret ^= v_buf_u64;
+-    v_ret = (((uint64_t)(v_ret << 27u)) | (v_ret >> 37u));
+-    v_ret *= 11400714785074694791u;
+-    v_ret += 9650029242287828579u;
+-    v_i = 24u;
+-  }
+-  if ((v_n & 4u) != 0u) {
+-    v_i8 = (v_i & 24u);
+-    v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[(v_i8 + 0u)])) |
+-        (((uint32_t)(self->private_impl.f_buf_data[(v_i8 + 1u)])) << 8u) |
+-        (((uint32_t)(self->private_impl.f_buf_data[(v_i8 + 2u)])) << 16u) |
+-        (((uint32_t)(self->private_impl.f_buf_data[(v_i8 + 3u)])) << 24u));
+-    v_ret ^= ((uint64_t)(((uint64_t)(v_buf_u32)) * 11400714785074694791u));
+-    v_ret = (((uint64_t)(v_ret << 23u)) | (v_ret >> 41u));
+-    v_ret *= 14029467366897019727u;
+-    v_ret += 1609587929392839161u;
+-    v_i = (v_i8 + 4u);
+-  }
+-  while (v_i < v_n) {
+-    v_ret ^= ((uint64_t)(((uint64_t)(self->private_impl.f_buf_data[v_i])) * 2870177450012600261u));
+-    v_ret = (((uint64_t)(v_ret << 11u)) | (v_ret >> 53u));
+-    v_ret *= 11400714785074694791u;
+-    v_i += 1u;
++  goto exit;
++  exit:
++  if (a_src && a_src->data.ptr) {
++    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
+   }
+-  v_ret ^= (v_ret >> 33u);
+-  v_ret *= 14029467366897019727u;
+-  v_ret ^= (v_ret >> 29u);
+-  v_ret *= 1609587929392839161u;
+-  v_ret ^= (v_ret >> 32u);
+-  return ((uint64_t)(v_ret));
++
++  return status;
+ }
+ 
+-#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH64)
++#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XZ)
+ 
+ #if defined(__cplusplus) && defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
+ 
+@@ -62309,16 +78871,12 @@ DynIOBuffer::DynIOBuffer(uint64_t max_incl)
+     : m_buf(wuffs_base__empty_io_buffer()), m_max_incl(max_incl) {}
+ 
+ DynIOBuffer::~DynIOBuffer() {
+-  if (m_buf.data.ptr) {
+-    free(m_buf.data.ptr);
+-  }
++  free(m_buf.data.ptr);
+ }
+ 
+ void  //
+ DynIOBuffer::drop() {
+-  if (m_buf.data.ptr) {
+-    free(m_buf.data.ptr);
+-  }
++  free(m_buf.data.ptr);
+   m_buf = wuffs_base__empty_io_buffer();
+ }
+ 
+@@ -62329,13 +78887,16 @@ DynIOBuffer::grow(uint64_t min_incl) {
+     return ((min_incl == 0) && (m_max_incl == 0))
+                ? DynIOBuffer::GrowResult::OK
+                : DynIOBuffer::GrowResult::FailedMaxInclExceeded;
++  } else if (n > SIZE_MAX) {
++    return DynIOBuffer::GrowResult::FailedOutOfMemory;
+   } else if (n > m_buf.data.len) {
+-    uint8_t* ptr = static_cast<uint8_t*>(realloc(m_buf.data.ptr, n));
++    uint8_t* ptr =
++        static_cast<uint8_t*>(realloc(m_buf.data.ptr, static_cast<size_t>(n)));
+     if (!ptr) {
+       return DynIOBuffer::GrowResult::FailedOutOfMemory;
+     }
+     m_buf.data.ptr = ptr;
+-    m_buf.data.len = n;
++    m_buf.data.len = static_cast<size_t>(n);
+   }
+   return DynIOBuffer::GrowResult::OK;
+ }
+@@ -62382,7 +78943,7 @@ Input::BringsItsOwnIOBuffer() {
+ FileInput::FileInput(FILE* f) : m_f(f) {}
+ 
+ std::string  //
+-FileInput::CopyIn(IOBuffer* dst, uint64_t history_retain_length) {
++FileInput::CopyIn(IOBuffer* dst) {
+   if (!m_f) {
+     return "wuffs_aux::sync_io::FileInput: nullptr file";
+   } else if (!dst) {
+@@ -62390,7 +78951,7 @@ FileInput::CopyIn(IOBuffer* dst, uint64_t history_retain_length) {
+   } else if (dst->meta.closed) {
+     return "wuffs_aux::sync_io::FileInput: end of file";
+   } else {
+-    dst->compact_retaining(history_retain_length);
++    dst->compact();
+     size_t n = fread(dst->writer_pointer(), 1, dst->writer_length(), m_f);
+     dst->meta.wi += n;
+     dst->meta.closed = feof(m_f);
+@@ -62418,7 +78979,7 @@ MemoryInput::BringsItsOwnIOBuffer() {
+ }
+ 
+ std::string  //
+-MemoryInput::CopyIn(IOBuffer* dst, uint64_t history_retain_length) {
++MemoryInput::CopyIn(IOBuffer* dst) {
+   if (!dst) {
+     return "wuffs_aux::sync_io::MemoryInput: nullptr IOBuffer";
+   } else if (dst->meta.closed) {
+@@ -62428,7 +78989,7 @@ MemoryInput::CopyIn(IOBuffer* dst, uint64_t history_retain_length) {
+     // to it.
+     return "wuffs_aux::sync_io::MemoryInput: overlapping buffers";
+   } else {
+-    dst->compact_retaining(history_retain_length);
++    dst->compact();
+     size_t nd = dst->writer_length();
+     size_t ns = m_io.reader_length();
+     size_t n = (nd < ns) ? nd : ns;
+@@ -62483,7 +79044,7 @@ AdvanceIOBufferTo(const ErrorMessages& error_messages,
+     if (!input.BringsItsOwnIOBuffer()) {
+       io_buf.compact();
+     }
+-    std::string error_message = input.CopyIn(&io_buf, 0);
++    std::string error_message = input.CopyIn(&io_buf);
+     if (!error_message.empty()) {
+       return error_message;
+     }
+@@ -62566,7 +79127,7 @@ HandleMetadata(
+           } else if (!input.BringsItsOwnIOBuffer()) {
+             io_buf.compact();
+           }
+-          std::string error_message = input.CopyIn(&io_buf, 0);
++          std::string error_message = input.CopyIn(&io_buf);
+           if (!error_message.empty()) {
+             return error_message;
+           }
+@@ -62627,15 +79188,13 @@ DecodeCborCallbacks::Done(DecodeCborResult& result,
+                           sync_io::Input& input,
+                           IOBuffer& buffer) {}
+ 
+-DecodeCborArgQuirks::DecodeCborArgQuirks(wuffs_base__slice_u32 repr0)
+-    : repr(repr0) {}
+-
+-DecodeCborArgQuirks::DecodeCborArgQuirks(uint32_t* ptr0, size_t len0)
+-    : repr(wuffs_base__make_slice_u32(ptr0, len0)) {}
++DecodeCborArgQuirks::DecodeCborArgQuirks(const QuirkKeyValuePair* ptr0,
++                                         const size_t len0)
++    : ptr(ptr0), len(len0) {}
+ 
+ DecodeCborArgQuirks  //
+ DecodeCborArgQuirks::DefaultValue() {
+-  return DecodeCborArgQuirks(wuffs_base__empty_slice_u32());
++  return DecodeCborArgQuirks(nullptr, 0);
+ }
+ 
+ DecodeCborResult  //
+@@ -62664,8 +79223,8 @@ DecodeCbor(DecodeCborCallbacks& callbacks,
+       ret_error_message = "wuffs_aux::DecodeCbor: out of memory";
+       goto done;
+     }
+-    for (size_t i = 0; i < quirks.repr.len; i++) {
+-      dec->set_quirk(quirks.repr.ptr[i], 1);
++    for (size_t i = 0; i < quirks.len; i++) {
++      dec->set_quirk(quirks.ptr[i].first, quirks.ptr[i].second);
+     }
+ 
+     // Prepare the wuffs_base__tok_buffer. 256 tokens is 2KiB.
+@@ -62710,14 +79269,14 @@ DecodeCbor(DecodeCborCallbacks& callbacks,
+                 "wuffs_aux::DecodeCbor: internal error: io_buf is closed";
+             goto done;
+           }
+-          io_buf->compact_retaining(dec->history_retain_length());
++          io_buf->compact();
+           if (io_buf->meta.wi >= io_buf->data.len) {
+             ret_error_message =
+                 "wuffs_aux::DecodeCbor: internal error: io_buf is full";
+             goto done;
+           }
+           cursor_index = io_buf->meta.ri;
+-          io_error_message = input.CopyIn(io_buf, dec->history_retain_length());
++          io_error_message = input.CopyIn(io_buf);
+         } else {
+           ret_error_message = tok_status.message();
+           goto done;
+@@ -62796,7 +79355,7 @@ DecodeCbor(DecodeCborCallbacks& callbacks,
+               goto done;
+             }
+             depth++;
+-            if (depth > WUFFS_CBOR__DECODER_DEPTH_MAX_INCL) {
++            if (depth > (int32_t)WUFFS_CBOR__DECODER_DEPTH_MAX_INCL) {
+               ret_error_message =
+                   "wuffs_aux::DecodeCbor: internal error: bad depth";
+               goto done;
+@@ -63052,6 +79611,11 @@ DecodeImageCallbacks::SelectDecoder(uint32_t fourcc,
+     }
+ #endif
+ 
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__QOI)
++    case WUFFS_BASE__FOURCC__QOI:
++      return wuffs_qoi__decoder::alloc_as__wuffs_base__image_decoder();
++#endif
++
+ #if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA)
+     case WUFFS_BASE__FOURCC__TGA:
+       return wuffs_tga__decoder::alloc_as__wuffs_base__image_decoder();
+@@ -63061,6 +79625,11 @@ DecodeImageCallbacks::SelectDecoder(uint32_t fourcc,
+     case WUFFS_BASE__FOURCC__WBMP:
+       return wuffs_wbmp__decoder::alloc_as__wuffs_base__image_decoder();
+ #endif
++
++#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WEBP)
++    case WUFFS_BASE__FOURCC__WEBP:
++      return wuffs_webp__decoder::alloc_as__wuffs_base__image_decoder();
++#endif
+   }
+ 
+   return wuffs_base__image_decoder::unique_ptr(nullptr);
+@@ -63091,7 +79660,7 @@ DecodeImageCallbacks::AllocPixbuf(const wuffs_base__image_config& image_config,
+     return AllocPixbufResult(DecodeImage_UnsupportedPixelConfiguration);
+   }
+   void* ptr =
+-      allow_uninitialized_memory ? malloc((size_t)len) : calloc((size_t)len, 1);
++      allow_uninitialized_memory ? malloc((size_t)len) : calloc(1, (size_t)len);
+   if (!ptr) {
+     return AllocPixbufResult(DecodeImage_OutOfMemory);
+   }
+@@ -63116,7 +79685,7 @@ DecodeImageCallbacks::AllocWorkbuf(wuffs_base__range_ii_u64 len_range,
+     return AllocWorkbufResult(DecodeImage_OutOfMemory);
+   }
+   void* ptr =
+-      allow_uninitialized_memory ? malloc((size_t)len) : calloc((size_t)len, 1);
++      allow_uninitialized_memory ? malloc((size_t)len) : calloc(1, (size_t)len);
+   if (!ptr) {
+     return AllocWorkbufResult(DecodeImage_OutOfMemory);
+   }
+@@ -63153,15 +79722,13 @@ const char DecodeImage_UnsupportedPixelConfiguration[] =  //
+ const char DecodeImage_UnsupportedPixelFormat[] =  //
+     "wuffs_aux::DecodeImage: unsupported pixel format";
+ 
+-DecodeImageArgQuirks::DecodeImageArgQuirks(wuffs_base__slice_u32 repr0)
+-    : repr(repr0) {}
+-
+-DecodeImageArgQuirks::DecodeImageArgQuirks(uint32_t* ptr0, size_t len0)
+-    : repr(wuffs_base__make_slice_u32(ptr0, len0)) {}
++DecodeImageArgQuirks::DecodeImageArgQuirks(const QuirkKeyValuePair* ptr0,
++                                           const size_t len0)
++    : ptr(ptr0), len(len0) {}
+ 
+ DecodeImageArgQuirks  //
+ DecodeImageArgQuirks::DefaultValue() {
+-  return DecodeImageArgQuirks(wuffs_base__empty_slice_u32());
++  return DecodeImageArgQuirks(nullptr, 0);
+ }
+ 
+ DecodeImageArgFlags::DecodeImageArgFlags(uint64_t repr0) : repr(repr0) {}
+@@ -63259,7 +79826,8 @@ DecodeImage0(wuffs_base__image_decoder::unique_ptr& image_decoder,
+              DecodeImageCallbacks& callbacks,
+              sync_io::Input& input,
+              wuffs_base__io_buffer& io_buf,
+-             wuffs_base__slice_u32 quirks,
++             const QuirkKeyValuePair* quirks_ptr,
++             const size_t quirks_len,
+              uint64_t flags,
+              wuffs_base__pixel_blend pixel_blend,
+              wuffs_base__color_u32_argb_premul background_color,
+@@ -63301,7 +79869,7 @@ redirect:
+           fourcc = 0;
+           break;
+         }
+-        std::string error_message = input.CopyIn(&io_buf, 0);
++        std::string error_message = input.CopyIn(&io_buf);
+         if (!error_message.empty()) {
+           return DecodeImageResult(std::move(error_message));
+         }
+@@ -63342,8 +79910,8 @@ redirect:
+     }
+ 
+     // Apply quirks.
+-    for (size_t i = 0; i < quirks.len; i++) {
+-      image_decoder->set_quirk(quirks.ptr[i], 1);
++    for (size_t i = 0; i < quirks_len; i++) {
++      image_decoder->set_quirk(quirks_ptr[i].first, quirks_ptr[i].second);
+     }
+ 
+     // Apply flags.
+@@ -63397,8 +79965,7 @@ redirect:
+       } else if (io_buf.meta.closed) {
+         return DecodeImageResult(DecodeImage_UnexpectedEndOfFile);
+       } else {
+-        std::string error_message =
+-            input.CopyIn(&io_buf, image_decoder->history_retain_length());
++        std::string error_message = input.CopyIn(&io_buf);
+         if (!error_message.empty()) {
+           return DecodeImageResult(std::move(error_message));
+         }
+@@ -63480,8 +80047,7 @@ redirect:
+     } else if (io_buf.meta.closed) {
+       return DecodeImageResult(DecodeImage_UnexpectedEndOfFile);
+     } else {
+-      std::string error_message =
+-          input.CopyIn(&io_buf, image_decoder->history_retain_length());
++      std::string error_message = input.CopyIn(&io_buf);
+       if (!error_message.empty()) {
+         return DecodeImageResult(std::move(error_message));
+       }
+@@ -63510,8 +80076,7 @@ redirect:
+       message = DecodeImage_UnexpectedEndOfFile;
+       break;
+     } else {
+-      std::string error_message =
+-          input.CopyIn(&io_buf, image_decoder->history_retain_length());
++      std::string error_message = input.CopyIn(&io_buf);
+       if (!error_message.empty()) {
+         message = std::move(error_message);
+         break;
+@@ -63539,8 +80104,7 @@ redirect:
+       } else if (io_buf.meta.closed) {
+         return DecodeImageResult(DecodeImage_UnexpectedEndOfFile);
+       } else {
+-        std::string error_message =
+-            input.CopyIn(&io_buf, image_decoder->history_retain_length());
++        std::string error_message = input.CopyIn(&io_buf);
+         if (!error_message.empty()) {
+           return DecodeImageResult(std::move(error_message));
+         }
+@@ -63574,10 +80138,10 @@ DecodeImage(DecodeImageCallbacks& callbacks,
+   }
+ 
+   wuffs_base__image_decoder::unique_ptr image_decoder(nullptr);
+-  DecodeImageResult result =
+-      DecodeImage0(image_decoder, callbacks, input, *io_buf, quirks.repr,
+-                   flags.repr, pixel_blend.repr, background_color.repr,
+-                   max_incl_dimension.repr, max_incl_metadata_length.repr);
++  DecodeImageResult result = DecodeImage0(
++      image_decoder, callbacks, input, *io_buf, quirks.ptr, quirks.len,
++      flags.repr, pixel_blend.repr, background_color.repr,
++      max_incl_dimension.repr, max_incl_metadata_length.repr);
+   callbacks.Done(result, input, *io_buf, std::move(image_decoder));
+   return result;
+ }
+@@ -63612,15 +80176,13 @@ const char DecodeJson_BadJsonPointer[] =  //
+ const char DecodeJson_NoMatch[] =  //
+     "wuffs_aux::DecodeJson: no match";
+ 
+-DecodeJsonArgQuirks::DecodeJsonArgQuirks(wuffs_base__slice_u32 repr0)
+-    : repr(repr0) {}
+-
+-DecodeJsonArgQuirks::DecodeJsonArgQuirks(uint32_t* ptr0, size_t len0)
+-    : repr(wuffs_base__make_slice_u32(ptr0, len0)) {}
++DecodeJsonArgQuirks::DecodeJsonArgQuirks(const QuirkKeyValuePair* ptr0,
++                                         const size_t len0)
++    : ptr(ptr0), len(len0) {}
+ 
+ DecodeJsonArgQuirks  //
+ DecodeJsonArgQuirks::DefaultValue() {
+-  return DecodeJsonArgQuirks(wuffs_base__empty_slice_u32());
++  return DecodeJsonArgQuirks(nullptr, 0);
+ }
+ 
+ DecodeJsonArgJsonPointer::DecodeJsonArgJsonPointer(std::string repr0)
+@@ -63633,58 +80195,58 @@ DecodeJsonArgJsonPointer::DefaultValue() {
+ 
+ // --------
+ 
+-#define WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN                           \
+-  while (tok_buf.meta.ri >= tok_buf.meta.wi) {                               \
+-    if (tok_status.repr == nullptr) {                                        \
+-      goto done;                                                             \
+-    } else if (tok_status.repr == wuffs_base__suspension__short_write) {     \
+-      tok_buf.compact();                                                     \
+-    } else if (tok_status.repr == wuffs_base__suspension__short_read) {      \
+-      if (!io_error_message.empty()) {                                       \
+-        ret_error_message = std::move(io_error_message);                     \
+-        goto done;                                                           \
+-      } else if (cursor_index != io_buf->meta.ri) {                          \
+-        ret_error_message =                                                  \
+-            "wuffs_aux::DecodeJson: internal error: bad cursor_index";       \
+-        goto done;                                                           \
+-      } else if (io_buf->meta.closed) {                                      \
+-        ret_error_message =                                                  \
+-            "wuffs_aux::DecodeJson: internal error: io_buf is closed";       \
+-        goto done;                                                           \
+-      }                                                                      \
+-      io_buf->compact_retaining(dec->history_retain_length());               \
+-      if (io_buf->meta.wi >= io_buf->data.len) {                             \
+-        ret_error_message =                                                  \
+-            "wuffs_aux::DecodeJson: internal error: io_buf is full";         \
+-        goto done;                                                           \
+-      }                                                                      \
+-      cursor_index = io_buf->meta.ri;                                        \
+-      io_error_message = input.CopyIn(io_buf, dec->history_retain_length()); \
+-    } else {                                                                 \
+-      ret_error_message = tok_status.message();                              \
+-      goto done;                                                             \
+-    }                                                                        \
+-    tok_status =                                                             \
+-        dec->decode_tokens(&tok_buf, io_buf, wuffs_base__empty_slice_u8());  \
+-    if ((tok_buf.meta.ri > tok_buf.meta.wi) ||                               \
+-        (tok_buf.meta.wi > tok_buf.data.len) ||                              \
+-        (io_buf->meta.ri > io_buf->meta.wi) ||                               \
+-        (io_buf->meta.wi > io_buf->data.len)) {                              \
+-      ret_error_message =                                                    \
+-          "wuffs_aux::DecodeJson: internal error: bad buffer indexes";       \
+-      goto done;                                                             \
+-    }                                                                        \
+-  }                                                                          \
+-  wuffs_base__token token = tok_buf.data.ptr[tok_buf.meta.ri++];             \
+-  uint64_t token_len = token.length();                                       \
+-  if ((io_buf->meta.ri < cursor_index) ||                                    \
+-      ((io_buf->meta.ri - cursor_index) < token_len)) {                      \
+-    ret_error_message =                                                      \
+-        "wuffs_aux::DecodeJson: internal error: bad token indexes";          \
+-    goto done;                                                               \
+-  }                                                                          \
+-  uint8_t* token_ptr = io_buf->data.ptr + cursor_index;                      \
+-  (void)(token_ptr);                                                         \
++#define WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN                          \
++  while (tok_buf.meta.ri >= tok_buf.meta.wi) {                              \
++    if (tok_status.repr == nullptr) {                                       \
++      goto done;                                                            \
++    } else if (tok_status.repr == wuffs_base__suspension__short_write) {    \
++      tok_buf.compact();                                                    \
++    } else if (tok_status.repr == wuffs_base__suspension__short_read) {     \
++      if (!io_error_message.empty()) {                                      \
++        ret_error_message = std::move(io_error_message);                    \
++        goto done;                                                          \
++      } else if (cursor_index != io_buf->meta.ri) {                         \
++        ret_error_message =                                                 \
++            "wuffs_aux::DecodeJson: internal error: bad cursor_index";      \
++        goto done;                                                          \
++      } else if (io_buf->meta.closed) {                                     \
++        ret_error_message =                                                 \
++            "wuffs_aux::DecodeJson: internal error: io_buf is closed";      \
++        goto done;                                                          \
++      }                                                                     \
++      io_buf->compact();                                                    \
++      if (io_buf->meta.wi >= io_buf->data.len) {                            \
++        ret_error_message =                                                 \
++            "wuffs_aux::DecodeJson: internal error: io_buf is full";        \
++        goto done;                                                          \
++      }                                                                     \
++      cursor_index = io_buf->meta.ri;                                       \
++      io_error_message = input.CopyIn(io_buf);                              \
++    } else {                                                                \
++      ret_error_message = tok_status.message();                             \
++      goto done;                                                            \
++    }                                                                       \
++    tok_status =                                                            \
++        dec->decode_tokens(&tok_buf, io_buf, wuffs_base__empty_slice_u8()); \
++    if ((tok_buf.meta.ri > tok_buf.meta.wi) ||                              \
++        (tok_buf.meta.wi > tok_buf.data.len) ||                             \
++        (io_buf->meta.ri > io_buf->meta.wi) ||                              \
++        (io_buf->meta.wi > io_buf->data.len)) {                             \
++      ret_error_message =                                                   \
++          "wuffs_aux::DecodeJson: internal error: bad buffer indexes";      \
++      goto done;                                                            \
++    }                                                                       \
++  }                                                                         \
++  wuffs_base__token token = tok_buf.data.ptr[tok_buf.meta.ri++];            \
++  uint64_t token_len = token.length();                                      \
++  if ((io_buf->meta.ri < cursor_index) ||                                   \
++      ((io_buf->meta.ri - cursor_index) < token_len)) {                     \
++    ret_error_message =                                                     \
++        "wuffs_aux::DecodeJson: internal error: bad token indexes";         \
++    goto done;                                                              \
++  }                                                                         \
++  uint8_t* token_ptr = io_buf->data.ptr + cursor_index;                     \
++  (void)(token_ptr);                                                        \
+   cursor_index += static_cast<size_t>(token_len)
+ 
+ // --------
+@@ -63965,11 +80527,11 @@ DecodeJson(DecodeJsonCallbacks& callbacks,
+       goto done;
+     }
+     bool allow_tilde_n_tilde_r_tilde_t = false;
+-    for (size_t i = 0; i < quirks.repr.len; i++) {
+-      dec->set_quirk(quirks.repr.ptr[i], 1);
+-      if (quirks.repr.ptr[i] ==
++    for (size_t i = 0; i < quirks.len; i++) {
++      dec->set_quirk(quirks.ptr[i].first, quirks.ptr[i].second);
++      if (quirks.ptr[i].first ==
+           WUFFS_JSON__QUIRK_JSON_POINTER_ALLOW_TILDE_N_TILDE_R_TILDE_T) {
+-        allow_tilde_n_tilde_r_tilde_t = true;
++        allow_tilde_n_tilde_r_tilde_t = (quirks.ptr[i].second != 0);
+       }
+     }
+ 
+@@ -64025,7 +80587,7 @@ DecodeJson(DecodeJsonCallbacks& callbacks,
+               goto done;
+             }
+             depth++;
+-            if (depth > WUFFS_JSON__DECODER_DEPTH_MAX_INCL) {
++            if (depth > (int32_t)WUFFS_JSON__DECODER_DEPTH_MAX_INCL) {
+               ret_error_message =
+                   "wuffs_aux::DecodeJson: internal error: bad depth";
+               goto done;
+-- 
+2.39.2
+
diff --git a/patches/coreboot-dasharo-unreleased/0002-lib_jpeg-avoidcalling-malloc-and-free.patch b/patches/coreboot-dasharo-unreleased/0002-lib_jpeg-avoidcalling-malloc-and-free.patch
new file mode 100644
index 00000000..fa131062
--- /dev/null
+++ b/patches/coreboot-dasharo-unreleased/0002-lib_jpeg-avoidcalling-malloc-and-free.patch
@@ -0,0 +1,91 @@
+From efad423f8472c1b9c130842e3d92625500f82d5d Mon Sep 17 00:00:00 2001
+From: Nigel Tao <nigeltao@golang.org>
+Date: Tue, 13 Aug 2024 22:29:21 +1000
+Subject: [PATCH] lib/jpeg: avoid calling malloc and free
+
+Since commit 1d029b40c9de ("lib/jpeg: Replace decoder with Wuffs'
+implementation"), a relatively large heap allocation is needed to decode
+many JPEGs for use as work area. The prior decoder did not need this,
+but also had many limitations in the JPEGs it could decode, was not as
+memory-safe and quickly crashed under fuzzing.
+
+This commit keeps using Wuffs' JPEG decoder, but it no longer requires
+any heap allocation (and thus configuring the heap size depending on how
+big a bootsplash image you want to support).
+
+Change-Id: Ie4c52520cbce498539517c4898ff765365a6beba
+Signed-off-by: Nigel Tao <nigeltao@golang.org>
+Reviewed-on: https://review.coreboot.org/c/coreboot/+/83895
+Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
+Reviewed-by: Nico Huber <nico.h@gmx.de>
+Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
+Reviewed-by: Jonathon Hall <jonathon.hall@puri.sm>
+---
+ src/lib/jpeg.c | 36 +++++++++++++++++++++---------------
+ 1 file changed, 21 insertions(+), 15 deletions(-)
+
+diff --git a/src/lib/jpeg.c b/src/lib/jpeg.c
+index 242cf0ca8e..617ab0b22a 100644
+--- a/src/lib/jpeg.c
++++ b/src/lib/jpeg.c
+@@ -1,9 +1,7 @@
+ /* SPDX-License-Identifier: GPL-2.0-only */
+ 
+ /*
+- * Provide a simple API around the Wuffs JPEG decoder
+- * Uses the heap (and lots of it) for the image-size specific
+- * work buffer, so ramstage-only.
++ * Provide a simple API around the Wuffs JPEG decoder.
+  */
+ 
+ #include <stdint.h>
+@@ -85,6 +83,24 @@ int jpeg_decode(unsigned char *filedata, size_t filesize, unsigned char *pic,
+ 		return JPEG_DECODE_FAILED;
+ 	}
+ 
++	/* Opting in to lower quality means that we can pass an empty slice as the
++	 * "work buffer" argument to wuffs_jpeg__decoder__decode_frame below.
++	 *
++	 * Decoding progressive (not sequential) JPEGs would still require dynamic
++	 * memory allocation (and the amount of work buffer required depends on the
++	 * image dimensions), but we choose to just reject progressive JPEGs. It is
++	 * simpler than sometimes calling malloc (which can fail, especially for
++	 * large allocations) and free.
++	 *
++	 * More commentary about these quirks is at
++	 * https://github.com/google/wuffs/blob/beaf45650085a16780b5f708b72daaeb1aa865c8/std/jpeg/decode_quirks.wuffs
++	 */
++	wuffs_jpeg__decoder__set_quirk(
++		&dec, WUFFS_BASE__QUIRK_QUALITY,
++		WUFFS_BASE__QUIRK_QUALITY__VALUE__LOWER_QUALITY);
++	wuffs_jpeg__decoder__set_quirk(
++		&dec, WUFFS_JPEG__QUIRK_REJECT_PROGRESSIVE_JPEGS, 1);
++
+ 	wuffs_base__image_config imgcfg;
+ 	wuffs_base__io_buffer src = wuffs_base__ptr_u8__reader(filedata, filesize, true);
+ 	status = wuffs_jpeg__decoder__decode_image_config(&dec, &imgcfg, &src);
+@@ -104,19 +120,9 @@ int jpeg_decode(unsigned char *filedata, size_t filesize, unsigned char *pic,
+ 		return JPEG_DECODE_FAILED;
+ 	}
+ 
+-	uint64_t workbuf_len_min_incl = wuffs_jpeg__decoder__workbuf_len(&dec).min_incl;
+-	uint8_t *workbuf_array = malloc(workbuf_len_min_incl);
+-	if ((workbuf_array == NULL) && workbuf_len_min_incl) {
+-		return JPEG_DECODE_FAILED;
+-	}
+-
+-	wuffs_base__slice_u8 workbuf =
+-		wuffs_base__make_slice_u8(workbuf_array, workbuf_len_min_incl);
+ 	status = wuffs_jpeg__decoder__decode_frame(&dec, &pixbuf, &src,
+-						   WUFFS_BASE__PIXEL_BLEND__SRC, workbuf, NULL);
+-
+-	free(workbuf_array);
+-
++						   WUFFS_BASE__PIXEL_BLEND__SRC,
++						   wuffs_base__empty_slice_u8(), NULL);
+ 	if (status.repr) {
+ 		return JPEG_DECODE_FAILED;
+ 	}
+-- 
+2.39.2
+
diff --git a/patches/coreboot-dasharo-unreleased/0002-pr0_chipset_locking-post_skylake.patch b/patches/coreboot-dasharo-unreleased/0002-pr0_chipset_locking-post_skylake.patch
deleted file mode 100644
index 768dfc16..00000000
--- a/patches/coreboot-dasharo-unreleased/0002-pr0_chipset_locking-post_skylake.patch
+++ /dev/null
@@ -1,391 +0,0 @@
-From ff22122c229bbe2109de92ded773493428f7ece9 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Micha=C5=82=20=C5=BBygowski?= <michal.zygowski@3mdeb.com>
-Date: Sun, 20 Oct 2024 13:15:19 +0200
-Subject: [PATCH] soc/intel/lockdown: Allow locking down SPI and LPC in SMM
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Heads payload uses APM_CNT_FINALIZE SMI to set and lock down
-the SPI controller with PR0 flash protection. Add new option
-to skip LPC and FAST SPI lock down in coreboot and move it
-to APM_CNT_FINALIZE SMI handler.
-
-Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
----
- src/soc/intel/alderlake/finalize.c            |  4 ++-
- src/soc/intel/cannonlake/finalize.c           |  3 +-
- src/soc/intel/common/block/lpc/Makefile.inc   |  4 +++
- src/soc/intel/common/block/smm/smihandler.c   | 10 ++++++
- .../common/pch/include/intelpch/lockdown.h    |  3 ++
- src/soc/intel/common/pch/lockdown/Kconfig     | 15 ++++++++
- .../intel/common/pch/lockdown/Makefile.inc    |  5 +++
- src/soc/intel/common/pch/lockdown/lockdown.c  | 33 +++++------------
- .../intel/common/pch/lockdown/lockdown_lpc.c  | 23 ++++++++++++
- .../intel/common/pch/lockdown/lockdown_spi.c  | 35 +++++++++++++++++++
- src/soc/intel/denverton_ns/lpc.c              |  3 +-
- src/soc/intel/elkhartlake/finalize.c          |  3 +-
- src/soc/intel/jasperlake/finalize.c           |  3 +-
- src/soc/intel/meteorlake/finalize.c           |  3 +-
- src/soc/intel/skylake/finalize.c              |  3 +-
- src/soc/intel/tigerlake/finalize.c            |  3 +-
- src/soc/intel/xeon_sp/finalize.c              |  3 +-
- 17 files changed, 123 insertions(+), 33 deletions(-)
- create mode 100644 src/soc/intel/common/pch/lockdown/lockdown_lpc.c
- create mode 100644 src/soc/intel/common/pch/lockdown/lockdown_spi.c
-
-diff --git a/src/soc/intel/alderlake/finalize.c b/src/soc/intel/alderlake/finalize.c
-index 460c8af174e..9cd9351d96a 100644
---- a/src/soc/intel/alderlake/finalize.c
-+++ b/src/soc/intel/alderlake/finalize.c
-@@ -84,7 +84,9 @@ static void soc_finalize(void *unused)
- 	printk(BIOS_DEBUG, "Finalizing chipset.\n");
- 
- 	pch_finalize();
--	apm_control(APM_CNT_FINALIZE);
-+	if (CONFIG(INTEL_CHIPSET_LOCKDOWN) || acpi_is_wakeup_s3())
-+		apm_control(APM_CNT_FINALIZE);
-+
- 	tbt_finalize();
- 	if (CONFIG(USE_FSP_NOTIFY_PHASE_READY_TO_BOOT) &&
- 			 CONFIG(USE_FSP_NOTIFY_PHASE_END_OF_FIRMWARE))
-diff --git a/src/soc/intel/cannonlake/finalize.c b/src/soc/intel/cannonlake/finalize.c
-index ba7fc69b552..b5f727e97c7 100644
---- a/src/soc/intel/cannonlake/finalize.c
-+++ b/src/soc/intel/cannonlake/finalize.c
-@@ -87,7 +87,8 @@ static void soc_finalize(void *unused)
- 	printk(BIOS_DEBUG, "Finalizing chipset.\n");
- 
- 	pch_finalize();
--	apm_control(APM_CNT_FINALIZE);
-+	if (CONFIG(INTEL_CHIPSET_LOCKDOWN) || acpi_is_wakeup_s3())
-+		apm_control(APM_CNT_FINALIZE);
- 	if (CONFIG(DISABLE_HECI1_AT_PRE_BOOT) &&
- 			CONFIG(SOC_INTEL_COMMON_BLOCK_HECI1_DISABLE_USING_PMC_IPC))
- 		heci1_disable();
-diff --git a/src/soc/intel/common/block/lpc/Makefile.inc b/src/soc/intel/common/block/lpc/Makefile.inc
-index b510cd0ec35..60792654b5a 100644
---- a/src/soc/intel/common/block/lpc/Makefile.inc
-+++ b/src/soc/intel/common/block/lpc/Makefile.inc
-@@ -5,3 +5,7 @@ romstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_LPC) += lpc_lib.c
- 
- ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_LPC) += lpc_lib.c
- ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_LPC) += lpc.c
-+
-+ifeq ($(CONFIG_SOC_INTEL_COMMON_SPI_LOCKDOWN_SMM),y)
-+smm-$(CONFIG_SOC_INTEL_COMMON_BLOCK_LPC) += lpc_lib.c
-+endif
-diff --git a/src/soc/intel/common/block/smm/smihandler.c b/src/soc/intel/common/block/smm/smihandler.c
-index 4bfd17bfd07..dcd74764957 100644
---- a/src/soc/intel/common/block/smm/smihandler.c
-+++ b/src/soc/intel/common/block/smm/smihandler.c
-@@ -15,12 +15,14 @@
- #include <device/pci_def.h>
- #include <device/pci_ops.h>
- #include <elog.h>
-+#include <intelblocks/cfg.h>
- #include <intelblocks/fast_spi.h>
- #include <intelblocks/oc_wdt.h>
- #include <intelblocks/pmclib.h>
- #include <intelblocks/smihandler.h>
- #include <intelblocks/tco.h>
- #include <intelblocks/uart.h>
-+#include <intelpch/lockdown.h>
- #include <smmstore.h>
- #include <soc/nvs.h>
- #include <soc/pci_devs.h>
-@@ -343,6 +345,14 @@ static void finalize(void)
- 	}
- 	finalize_done = 1;
- 
-+	if (CONFIG(SOC_INTEL_COMMON_SPI_LOCKDOWN_SMM)) {
-+		/* SPI lock down configuration */
-+		fast_spi_lockdown_bios(CHIPSET_LOCKDOWN_COREBOOT);
-+
-+		/* LPC/eSPI lock down configuration */
-+		lpc_lockdown_config(CHIPSET_LOCKDOWN_COREBOOT);
-+	}
-+
- 	if (CONFIG(SPI_FLASH_SMM))
- 		/* Re-init SPI driver to handle locked BAR */
- 		fast_spi_init();
-diff --git a/src/soc/intel/common/pch/include/intelpch/lockdown.h b/src/soc/intel/common/pch/include/intelpch/lockdown.h
-index b5aba06fe0e..1b96f41a2a4 100644
---- a/src/soc/intel/common/pch/include/intelpch/lockdown.h
-+++ b/src/soc/intel/common/pch/include/intelpch/lockdown.h
-@@ -22,4 +22,7 @@ int get_lockdown_config(void);
-  */
- void soc_lockdown_config(int chipset_lockdown);
- 
-+void fast_spi_lockdown_bios(int chipset_lockdown);
-+void lpc_lockdown_config(int chipset_lockdown);
-+
- #endif /* SOC_INTEL_COMMON_PCH_LOCKDOWN_H */
-diff --git a/src/soc/intel/common/pch/lockdown/Kconfig b/src/soc/intel/common/pch/lockdown/Kconfig
-index 8fce5e785c2..fbeb341e9ac 100644
---- a/src/soc/intel/common/pch/lockdown/Kconfig
-+++ b/src/soc/intel/common/pch/lockdown/Kconfig
-@@ -1,7 +1,22 @@
- config SOC_INTEL_COMMON_PCH_LOCKDOWN
- 	bool
- 	default n
-+	select HAVE_INTEL_CHIPSET_LOCKDOWN
- 	help
- 	  This option allows to have chipset lockdown for DMI, FAST_SPI and
- 	  soc_lockdown_config() to implement any additional lockdown as PMC,
- 	  LPC for supported PCH.
-+
-+config SOC_INTEL_COMMON_SPI_LOCKDOWN_SMM
-+	bool "Lock down SPI controller in SMM"
-+	default n
-+	depends on HAVE_SMI_HANDLER
-+	select SPI_FLASH_SMM
-+	help
-+	  This option allows to have chipset lockdown for FAST_SPI and LPC for
-+	  supported PCH. If selected, coreboot will skip locking down the SPI
-+	  and LPC controller. The payload or OS is responsible for locking it
-+	  using APM_CNT_FINALIZE SMI. Used by heads to set and lock PR0 flash
-+	  protection.
-+	  
-+	  If unsure, say N.
-\ No newline at end of file
-diff --git a/src/soc/intel/common/pch/lockdown/Makefile.inc b/src/soc/intel/common/pch/lockdown/Makefile.inc
-index 71466f8edd1..64aad562acf 100644
---- a/src/soc/intel/common/pch/lockdown/Makefile.inc
-+++ b/src/soc/intel/common/pch/lockdown/Makefile.inc
-@@ -1,2 +1,7 @@
- ## SPDX-License-Identifier: GPL-2.0-only
- ramstage-$(CONFIG_SOC_INTEL_COMMON_PCH_LOCKDOWN) += lockdown.c
-+ramstage-$(CONFIG_SOC_INTEL_COMMON_PCH_LOCKDOWN) += lockdown_lpc.c
-+ramstage-$(CONFIG_SOC_INTEL_COMMON_PCH_LOCKDOWN) += lockdown_spi.c
-+
-+smm-$(CONFIG_SOC_INTEL_COMMON_SPI_LOCKDOWN_SMM) += lockdown_lpc.c
-+smm-$(CONFIG_SOC_INTEL_COMMON_SPI_LOCKDOWN_SMM) += lockdown_spi.c
-diff --git a/src/soc/intel/common/pch/lockdown/lockdown.c b/src/soc/intel/common/pch/lockdown/lockdown.c
-index 1b1d99cc0c9..7e52fb826fe 100644
---- a/src/soc/intel/common/pch/lockdown/lockdown.c
-+++ b/src/soc/intel/common/pch/lockdown/lockdown.c
-@@ -61,21 +61,24 @@ static void fast_spi_lockdown_cfg(int chipset_lockdown)
- 	/* Set FAST_SPI opcode menu */
- 	fast_spi_set_opcode_menu();
- 
--	/* Discrete Lock Flash PR registers */
--	fast_spi_pr_dlock();
--
- 	/* Check if SPI transaction is pending */
- 	fast_spi_cycle_in_progress();
- 
- 	/* Clear any outstanding status bits like AEL, FCERR, FDONE, SAF etc. */
- 	fast_spi_clear_outstanding_status();
- 
--	/* Lock FAST_SPIBAR */
--	fast_spi_lock_bar();
--
- 	/* Set Vendor Component Lock (VCL) */
- 	fast_spi_vscc0_lock();
- 
-+	if (CONFIG(SOC_INTEL_COMMON_SPI_LOCKDOWN_SMM))
-+		return;
-+
-+	/* Discrete Lock Flash PR registers */
-+	fast_spi_pr_dlock();
-+
-+	/* Lock FAST_SPIBAR */
-+	fast_spi_lock_bar();
-+
- 	/* Set BIOS Interface Lock, BIOS Lock */
- 	if (chipset_lockdown == CHIPSET_LOCKDOWN_COREBOOT) {
- 		/* BIOS Interface Lock */
-@@ -95,24 +98,6 @@ static void fast_spi_lockdown_cfg(int chipset_lockdown)
- 	}
- }
- 
--static void lpc_lockdown_config(int chipset_lockdown)
--{
--	/* Set BIOS Interface Lock, BIOS Lock */
--	if (chipset_lockdown == CHIPSET_LOCKDOWN_COREBOOT) {
--		/* BIOS Interface Lock */
--		lpc_set_bios_interface_lock_down();
--
--		/* Only allow writes in SMM */
--		if (CONFIG(BOOTMEDIA_SMM_BWP) && is_smm_bwp_permitted()) {
--			lpc_set_eiss();
--			lpc_enable_wp();
--		}
--
--		/* BIOS Lock */
--		lpc_set_lock_enable();
--	}
--}
--
- static void sa_lockdown_config(int chipset_lockdown)
- {
- 	if (!CONFIG(SOC_INTEL_COMMON_BLOCK_SA))
-diff --git a/src/soc/intel/common/pch/lockdown/lockdown_lpc.c b/src/soc/intel/common/pch/lockdown/lockdown_lpc.c
-new file mode 100644
-index 00000000000..69278ea343f
---- /dev/null
-+++ b/src/soc/intel/common/pch/lockdown/lockdown_lpc.c
-@@ -0,0 +1,23 @@
-+/* SPDX-License-Identifier: GPL-2.0-only */
-+
-+#include <intelblocks/cfg.h>
-+#include <intelblocks/lpc_lib.h>
-+#include <intelpch/lockdown.h>
-+
-+void lpc_lockdown_config(int chipset_lockdown)
-+{
-+	/* Set BIOS Interface Lock, BIOS Lock */
-+	if (chipset_lockdown == CHIPSET_LOCKDOWN_COREBOOT) {
-+		/* BIOS Interface Lock */
-+		lpc_set_bios_interface_lock_down();
-+
-+		/* Only allow writes in SMM */
-+		if (CONFIG(BOOTMEDIA_SMM_BWP)) {
-+			lpc_set_eiss();
-+			lpc_enable_wp();
-+		}
-+
-+		/* BIOS Lock */
-+		lpc_set_lock_enable();
-+	}
-+}
-diff --git a/src/soc/intel/common/pch/lockdown/lockdown_spi.c b/src/soc/intel/common/pch/lockdown/lockdown_spi.c
-new file mode 100644
-index 00000000000..fa09cec7c2e
---- /dev/null
-+++ b/src/soc/intel/common/pch/lockdown/lockdown_spi.c
-@@ -0,0 +1,35 @@
-+/* SPDX-License-Identifier: GPL-2.0-only */
-+
-+#include <intelblocks/cfg.h>
-+#include <intelblocks/fast_spi.h>
-+#include <intelpch/lockdown.h>
-+
-+void fast_spi_lockdown_bios(int chipset_lockdown)
-+{
-+	if (!CONFIG(SOC_INTEL_COMMON_BLOCK_FAST_SPI))
-+		return;
-+
-+	/* Discrete Lock Flash PR registers */
-+	fast_spi_pr_dlock();
-+
-+	/* Lock FAST_SPIBAR */
-+	fast_spi_lock_bar();
-+
-+	/* Set BIOS Interface Lock, BIOS Lock */
-+	if (chipset_lockdown == CHIPSET_LOCKDOWN_COREBOOT) {
-+		/* BIOS Interface Lock */
-+		fast_spi_set_bios_interface_lock_down();
-+
-+		/* Only allow writes in SMM */
-+		if (CONFIG(BOOTMEDIA_SMM_BWP)) {
-+			fast_spi_set_eiss();
-+			fast_spi_enable_wp();
-+		}
-+
-+		/* BIOS Lock */
-+		fast_spi_set_lock_enable();
-+
-+		/* EXT BIOS Lock */
-+		fast_spi_set_ext_bios_lock_enable();
-+	}
-+}
-diff --git a/src/soc/intel/denverton_ns/lpc.c b/src/soc/intel/denverton_ns/lpc.c
-index 7ebca1eb946..8d8acf05088 100644
---- a/src/soc/intel/denverton_ns/lpc.c
-+++ b/src/soc/intel/denverton_ns/lpc.c
-@@ -536,7 +536,8 @@ static const struct pci_driver lpc_driver __pci_driver = {
- 
- static void finalize_chipset(void *unused)
- {
--	apm_control(APM_CNT_FINALIZE);
-+	if (CONFIG(INTEL_CHIPSET_LOCKDOWN) || acpi_is_wakeup_s3())
-+		apm_control(APM_CNT_FINALIZE);
- }
- 
- BOOT_STATE_INIT_ENTRY(BS_OS_RESUME, BS_ON_ENTRY, finalize_chipset, NULL);
-diff --git a/src/soc/intel/elkhartlake/finalize.c b/src/soc/intel/elkhartlake/finalize.c
-index 275413b4efa..802d02cb596 100644
---- a/src/soc/intel/elkhartlake/finalize.c
-+++ b/src/soc/intel/elkhartlake/finalize.c
-@@ -43,7 +43,8 @@ static void soc_finalize(void *unused)
- 	printk(BIOS_DEBUG, "Finalizing chipset.\n");
- 
- 	pch_finalize();
--	apm_control(APM_CNT_FINALIZE);
-+	if (CONFIG(INTEL_CHIPSET_LOCKDOWN) || acpi_is_wakeup_s3())
-+		apm_control(APM_CNT_FINALIZE);
- 	if (CONFIG(USE_FSP_NOTIFY_PHASE_READY_TO_BOOT) &&
- 		 CONFIG(USE_FSP_NOTIFY_PHASE_END_OF_FIRMWARE))
- 		heci_finalize();
-diff --git a/src/soc/intel/jasperlake/finalize.c b/src/soc/intel/jasperlake/finalize.c
-index 6cff7a80f30..1b68cc51786 100644
---- a/src/soc/intel/jasperlake/finalize.c
-+++ b/src/soc/intel/jasperlake/finalize.c
-@@ -75,7 +75,8 @@ static void soc_finalize(void *unused)
- 	printk(BIOS_DEBUG, "Finalizing chipset.\n");
- 
- 	pch_finalize();
--	apm_control(APM_CNT_FINALIZE);
-+	if (CONFIG(INTEL_CHIPSET_LOCKDOWN) || acpi_is_wakeup_s3())
-+		apm_control(APM_CNT_FINALIZE);
- 
- 	/* Indicate finalize step with post code */
- 	post_code(POSTCODE_OS_BOOT);
-diff --git a/src/soc/intel/meteorlake/finalize.c b/src/soc/intel/meteorlake/finalize.c
-index a977b0516e5..951153fa812 100644
---- a/src/soc/intel/meteorlake/finalize.c
-+++ b/src/soc/intel/meteorlake/finalize.c
-@@ -75,7 +75,8 @@ static void soc_finalize(void *unused)
- 	printk(BIOS_DEBUG, "Finalizing chipset.\n");
- 
- 	pch_finalize();
--	apm_control(APM_CNT_FINALIZE);
-+	if (CONFIG(INTEL_CHIPSET_LOCKDOWN) || acpi_is_wakeup_s3())
-+		apm_control(APM_CNT_FINALIZE);
- 	tbt_finalize();
- 	sa_finalize();
- 	if (CONFIG(USE_FSP_NOTIFY_PHASE_READY_TO_BOOT) &&
-diff --git a/src/soc/intel/skylake/finalize.c b/src/soc/intel/skylake/finalize.c
-index fd80aeac1a0..a147b62e46f 100644
---- a/src/soc/intel/skylake/finalize.c
-+++ b/src/soc/intel/skylake/finalize.c
-@@ -106,7 +106,8 @@ static void soc_finalize(void *unused)
- 	pch_finalize_script(dev);
- 
- 	soc_lockdown(dev);
--	apm_control(APM_CNT_FINALIZE);
-+	if (CONFIG(INTEL_CHIPSET_LOCKDOWN) || acpi_is_wakeup_s3())
-+		apm_control(APM_CNT_FINALIZE);
- 
- 	/* Indicate finalize step with post code */
- 	post_code(POSTCODE_OS_BOOT);
-diff --git a/src/soc/intel/tigerlake/finalize.c b/src/soc/intel/tigerlake/finalize.c
-index cd02745a9e6..06ce243fe72 100644
---- a/src/soc/intel/tigerlake/finalize.c
-+++ b/src/soc/intel/tigerlake/finalize.c
-@@ -55,7 +55,8 @@ static void soc_finalize(void *unused)
- 	printk(BIOS_DEBUG, "Finalizing chipset.\n");
- 
- 	pch_finalize();
--	apm_control(APM_CNT_FINALIZE);
-+	if (CONFIG(INTEL_CHIPSET_LOCKDOWN) || acpi_is_wakeup_s3())
-+		apm_control(APM_CNT_FINALIZE);
- 	tbt_finalize();
- 	if (CONFIG(DISABLE_HECI1_AT_PRE_BOOT))
- 		heci1_disable();
-diff --git a/src/soc/intel/xeon_sp/finalize.c b/src/soc/intel/xeon_sp/finalize.c
-index af630fe8127..8e409b8c439 100644
---- a/src/soc/intel/xeon_sp/finalize.c
-+++ b/src/soc/intel/xeon_sp/finalize.c
-@@ -59,7 +59,8 @@ static void soc_finalize(void *unused)
- 	if (!CONFIG(USE_PM_ACPI_TIMER))
- 		setbits8(pmc_mmio_regs() + PCH_PWRM_ACPI_TMR_CTL, ACPI_TIM_DIS);
- 
--	apm_control(APM_CNT_FINALIZE);
-+	if (CONFIG(INTEL_CHIPSET_LOCKDOWN) || acpi_is_wakeup_s3())
-+		apm_control(APM_CNT_FINALIZE);
- 	lock_pam0123();
- 
- 	if (CONFIG_MAX_SOCKET > 1) {
diff --git a/patches/coreboot-dasharo-unreleased/0003-CONFIG_RESOURCE_ALLOCATION_TOP_DOWN-CONFIG_DOMAIN_RESOURCE_32BIT_LIMIT.patch b/patches/coreboot-dasharo-unreleased/0003-CONFIG_RESOURCE_ALLOCATION_TOP_DOWN-CONFIG_DOMAIN_RESOURCE_32BIT_LIMIT.patch
new file mode 100644
index 00000000..4b48903f
--- /dev/null
+++ b/patches/coreboot-dasharo-unreleased/0003-CONFIG_RESOURCE_ALLOCATION_TOP_DOWN-CONFIG_DOMAIN_RESOURCE_32BIT_LIMIT.patch
@@ -0,0 +1,130 @@
+From a2180b33351e63187b6de834d3a3fd30ea8b500c Mon Sep 17 00:00:00 2001
+From: Arthur Heymans <arthur@aheymans.xyz>
+Date: Thu, 25 Jan 2024 16:40:50 +0100
+Subject: [PATCH] nb/intel/*: Match ACPI with resource allocation
+
+Currently resource allocation starts top down from the default value
+0xfe000000. This does not match what ACPI reports, so adapt
+CONFIG_DOMAIN_RESOURCE_32BIT_LIMIT to reflect that.
+
+Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
+Change-Id: I2ba0e96a7ab18d65b7fbbb38b1a979ea2ec6d1be
+Reviewed-on: https://review.coreboot.org/c/coreboot/+/80207
+Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
+Reviewed-by: Nico Huber <nico.h@gmx.de>
+---
+ src/northbridge/intel/gm45/Kconfig        | 4 ++++
+ src/northbridge/intel/haswell/Kconfig     | 4 ++++
+ src/northbridge/intel/i945/Kconfig        | 4 ++++
+ src/northbridge/intel/ironlake/Kconfig    | 4 ++++
+ src/northbridge/intel/pineview/Kconfig    | 4 ++++
+ src/northbridge/intel/sandybridge/Kconfig | 4 ++++
+ src/northbridge/intel/x4x/Kconfig         | 4 ++++
+ 7 files changed, 28 insertions(+)
+
+diff --git a/src/northbridge/intel/gm45/Kconfig b/src/northbridge/intel/gm45/Kconfig
+index 8059e7ee80..fef0d735b3 100644
+--- a/src/northbridge/intel/gm45/Kconfig
++++ b/src/northbridge/intel/gm45/Kconfig
+@@ -31,6 +31,10 @@ config ECAM_MMCONF_BUS_NUMBER
+ 	int
+ 	default 64
+ 
++# This number must be equal or lower than what's reported in ACPI PCI _CRS
++config DOMAIN_RESOURCE_32BIT_LIMIT
++	default 0xfec00000
++
+ config SMM_RESERVED_SIZE
+ 	hex
+ 	default 0x100000
+diff --git a/src/northbridge/intel/haswell/Kconfig b/src/northbridge/intel/haswell/Kconfig
+index 4b83a25bc1..35403373e7 100644
+--- a/src/northbridge/intel/haswell/Kconfig
++++ b/src/northbridge/intel/haswell/Kconfig
+@@ -60,6 +60,10 @@ config ECAM_MMCONF_BUS_NUMBER
+ 	int
+ 	default 64
+ 
++# This number must be equal or lower than what's reported in ACPI PCI _CRS
++config DOMAIN_RESOURCE_32BIT_LIMIT
++	default ECAM_MMCONF_BASE_ADDRESS
++
+ config DCACHE_RAM_BASE
+ 	hex
+ 	default 0xff7c0000
+diff --git a/src/northbridge/intel/i945/Kconfig b/src/northbridge/intel/i945/Kconfig
+index ef925e17e7..32eff1a611 100644
+--- a/src/northbridge/intel/i945/Kconfig
++++ b/src/northbridge/intel/i945/Kconfig
+@@ -41,6 +41,10 @@ config ECAM_MMCONF_BUS_NUMBER
+ 	int
+ 	default 64
+ 
++# This number must be equal or lower than what's reported in ACPI PCI _CRS
++config DOMAIN_RESOURCE_32BIT_LIMIT
++	default 0xfec00000
++
+ config OVERRIDE_CLOCK_DISABLE
+ 	bool
+ 	default n
+diff --git a/src/northbridge/intel/ironlake/Kconfig b/src/northbridge/intel/ironlake/Kconfig
+index ce705dcf53..2bafebf92e 100644
+--- a/src/northbridge/intel/ironlake/Kconfig
++++ b/src/northbridge/intel/ironlake/Kconfig
+@@ -47,6 +47,10 @@ config ECAM_MMCONF_BASE_ADDRESS
+ config ECAM_MMCONF_BUS_NUMBER
+ 	default 256
+ 
++# This number must be equal or lower than what's reported in ACPI PCI _CRS
++config DOMAIN_RESOURCE_32BIT_LIMIT
++	default 0xfec00000
++
+ config INTEL_GMA_BCLV_OFFSET
+ 	default 0x48254
+ 
+diff --git a/src/northbridge/intel/pineview/Kconfig b/src/northbridge/intel/pineview/Kconfig
+index 877812643a..59cfcd5e0a 100644
+--- a/src/northbridge/intel/pineview/Kconfig
++++ b/src/northbridge/intel/pineview/Kconfig
+@@ -38,4 +38,8 @@ config FIXED_DMIBAR_MMIO_BASE
+ config FIXED_EPBAR_MMIO_BASE
+ 	default 0xfed19000
+ 
++# This number must be equal or lower than what's reported in ACPI PCI _CRS
++config DOMAIN_RESOURCE_32BIT_LIMIT
++	default 0xfec00000
++
+ endif
+diff --git a/src/northbridge/intel/sandybridge/Kconfig b/src/northbridge/intel/sandybridge/Kconfig
+index f7d56c7503..fa40b0668d 100644
+--- a/src/northbridge/intel/sandybridge/Kconfig
++++ b/src/northbridge/intel/sandybridge/Kconfig
+@@ -104,6 +104,10 @@ config ECAM_MMCONF_BUS_NUMBER
+ 	int
+ 	default 64
+ 
++# This number must be equal or lower than what's reported in ACPI PCI _CRS
++config DOMAIN_RESOURCE_32BIT_LIMIT
++	default ECAM_MMCONF_BASE_ADDRESS
++
+ config DCACHE_RAM_BASE
+ 	hex
+ 	default 0xfefe0000
+diff --git a/src/northbridge/intel/x4x/Kconfig b/src/northbridge/intel/x4x/Kconfig
+index 9af063819b..097e11126c 100644
+--- a/src/northbridge/intel/x4x/Kconfig
++++ b/src/northbridge/intel/x4x/Kconfig
+@@ -28,6 +28,10 @@ config ECAM_MMCONF_BUS_NUMBER
+ 	int
+ 	default 256
+ 
++# This number must be equal or lower than what's reported in ACPI PCI _CRS
++config DOMAIN_RESOURCE_32BIT_LIMIT
++	default 0xfec00000
++
+ config SMM_RESERVED_SIZE
+ 	hex
+ 	default 0x100000
+-- 
+2.39.2
+

From 602e281f2f24cb2d7b7583ced9969fb802ff2ea0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Wed, 11 Dec 2024 18:43:36 +0100
Subject: [PATCH 19/37] config/coreboot-novacustom-v5.0tu.config: add
 bootsplash
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Co-authored-by: Thierry Laurion <insurgo@riseup.net>
Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 config/coreboot-novacustom-v540tu.config | 7 ++++++-
 config/coreboot-novacustom-v560tu.config | 9 +++++++--
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/config/coreboot-novacustom-v540tu.config b/config/coreboot-novacustom-v540tu.config
index a4940ba3..7da904d9 100644
--- a/config/coreboot-novacustom-v540tu.config
+++ b/config/coreboot-novacustom-v540tu.config
@@ -35,7 +35,12 @@ CONFIG_HAVE_ASAN_IN_RAMSTAGE=y
 # CONFIG_NO_STAGE_CACHE is not set
 CONFIG_TSEG_STAGE_CACHE=y
 # CONFIG_UPDATE_IMAGE is not set
-# CONFIG_BOOTSPLASH_IMAGE is not set
+CONFIG_BOOTSPLASH_IMAGE=y
+CONFIG_BOOTSPLASH_FILE="@BRAND_DIR@/bootsplash.jpg"
+CONFIG_BOOTSPLASH_CONVERT=y
+CONFIG_BOOTSPLASH_CONVERT_QUALITY=90
+# CONFIG_BOOTSPLASH_CONVERT_RESIZE is not set
+# CONFIG_BOOTSPLASH_CONVERT_COLORSWAP is not set
 # CONFIG_FW_CONFIG is not set
 
 #
diff --git a/config/coreboot-novacustom-v560tu.config b/config/coreboot-novacustom-v560tu.config
index debec074..7de17244 100644
--- a/config/coreboot-novacustom-v560tu.config
+++ b/config/coreboot-novacustom-v560tu.config
@@ -35,7 +35,12 @@ CONFIG_HAVE_ASAN_IN_RAMSTAGE=y
 # CONFIG_NO_STAGE_CACHE is not set
 CONFIG_TSEG_STAGE_CACHE=y
 # CONFIG_UPDATE_IMAGE is not set
-# CONFIG_BOOTSPLASH_IMAGE is not set
+CONFIG_BOOTSPLASH_IMAGE=y
+CONFIG_BOOTSPLASH_FILE="@BRAND_DIR@/bootsplash.jpg"
+CONFIG_BOOTSPLASH_CONVERT=y
+CONFIG_BOOTSPLASH_CONVERT_QUALITY=90
+# CONFIG_BOOTSPLASH_CONVERT_RESIZE is not set
+# CONFIG_BOOTSPLASH_CONVERT_COLORSWAP is not set
 # CONFIG_FW_CONFIG is not set
 
 #
@@ -156,8 +161,8 @@ CONFIG_BOOT_DEVICE_SPI_FLASH_BUS=0
 #
 # CONFIG_BOARD_CLEVO_V540TNX is not set
 # CONFIG_BOARD_CLEVO_V560TNX is not set
+# CONFIG_BOARD_CLEVO_V540TU is not set
 CONFIG_BOARD_CLEVO_V560TU=y
-# CONFIG_BOARD_CLEVO_V560TU is not set
 
 #
 # Tiger Lake U

From 6ee05c3dcef136a2f889e4a7fd340c0f220d0e3e Mon Sep 17 00:00:00 2001
From: Thierry Laurion <insurgo@riseup.net>
Date: Tue, 10 Dec 2024 17:46:58 -0500
Subject: [PATCH 20/37] CircleCI: Add v560tu missing into
 https://github.com/linuxboot/heads/pull/1846

Redoing diffs already proposed under https://github.com/linuxboot/heads/pull/1871 but not taken yet....

Signed-off-by: Thierry Laurion <insurgo@riseup.net>
---
 .circleci/config.yml | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 1db3a88d..478f6e38 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -254,7 +254,7 @@ workflows:
           target: novacustom_nv4x_adl
           subcommand: ""
           requires:
-            - x86-musl-cross-make
+            - x230-hotp-maximized
 
       # coreboot talos_2
       - build_and_persist:
@@ -510,7 +510,7 @@ workflows:
           requires:
             - librem_14
 
-      # dasharo release
+      # dasharo release, share 24.02.01 utils/crossgcc
       - build:
           name: nitropad-ns50
           target: nitropad-ns50
@@ -518,6 +518,13 @@ workflows:
           requires:
             - novacustom_nv4x_adl
 
+      - build:
+          name: novacustom-v5460tu
+          target: novacustom-v560tu
+          subcommand: ""
+          requires:
+            - novacustom_nv4x_adl
+
       - build:
           name: novacustom-v540tu
           target: novacustom-v540tu
@@ -525,6 +532,7 @@ workflows:
           requires:
             - novacustom_nv4x_adl
 
+
       # coreboot 4.11
       - build:
           name: UNMAINTAINED_kgpe-d16_workstation

From fffc3a88c40d857ab568e73f33e6d8cd02ee4bbb Mon Sep 17 00:00:00 2001
From: Thierry Laurion <insurgo@riseup.net>
Date: Tue, 10 Dec 2024 17:55:46 -0500
Subject: [PATCH 21/37] v540tu/v560tu: remove MSRTOOL, reuse proposed changes
 not taken from https://github.com/linuxboot/heads/pull/1871 for
 https://github.com/linuxboot/heads/pull/1846

Signed-off-by: Thierry Laurion <insurgo@riseup.net>
---
 boards/novacustom-v540tu/novacustom-v540tu.config | 11 ++++++-----
 boards/novacustom-v560tu/novacustom-v560tu.config | 11 ++++++-----
 2 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/boards/novacustom-v540tu/novacustom-v540tu.config b/boards/novacustom-v540tu/novacustom-v540tu.config
index bbd9f259..54a72ad0 100644
--- a/boards/novacustom-v540tu/novacustom-v540tu.config
+++ b/boards/novacustom-v540tu/novacustom-v540tu.config
@@ -28,7 +28,12 @@ CONFIG_UTIL_LINUX=y
 CONFIG_LVM2=y
 CONFIG_MBEDTLS=y
 CONFIG_PCIUTILS=y
-CONFIG_MSRTOOLS=y
+
+#platform locking finalization (PR0)
+CONFIG_IO386=y
+export CONFIG_FINALIZE_PLATFORM_LOCKING=y
+
+
 #Remote attestation support
 # TPM2 requirements
 CONFIG_TPM2_TSS=y
@@ -69,7 +74,3 @@ export CONFIG_BOOT_KERNEL_REMOVE="intel_iommu=on intel_iommu=igfx_off"
 export CONFIG_BOARD_NAME="NovaCustom V540TU"
 export CONFIG_FLASH_OPTIONS="flashprog --progress --programmer internal"
 export CONFIG_AUTO_BOOT_TIMEOUT=5
-
-#platform locking finalization (PR0)
-CONFIG_IO386=y
-export CONFIG_FINALIZE_PLATFORM_LOCKING=y
diff --git a/boards/novacustom-v560tu/novacustom-v560tu.config b/boards/novacustom-v560tu/novacustom-v560tu.config
index eb92388c..1e6e5972 100644
--- a/boards/novacustom-v560tu/novacustom-v560tu.config
+++ b/boards/novacustom-v560tu/novacustom-v560tu.config
@@ -28,7 +28,12 @@ CONFIG_UTIL_LINUX=y
 CONFIG_LVM2=y
 CONFIG_MBEDTLS=y
 CONFIG_PCIUTILS=y
-CONFIG_MSRTOOLS=y
+
+#platform locking finalization (PR0)
+CONFIG_IO386=y
+export CONFIG_FINALIZE_PLATFORM_LOCKING=y
+
+
 #Remote attestation support
 # TPM2 requirements
 CONFIG_TPM2_TSS=y
@@ -69,7 +74,3 @@ export CONFIG_BOOT_KERNEL_REMOVE="intel_iommu=on intel_iommu=igfx_off"
 export CONFIG_BOARD_NAME="NovaCustom V540TU"
 export CONFIG_FLASH_OPTIONS="flashprog --progress --programmer internal"
 export CONFIG_AUTO_BOOT_TIMEOUT=5
-
-#platform locking finalization (PR0)
-CONFIG_IO386=y
-export CONFIG_FINALIZE_PLATFORM_LOCKING=y

From bf06be9017b87eae3d89c422b70ee38926fc21b8 Mon Sep 17 00:00:00 2001
From: Thierry Laurion <insurgo@riseup.net>
Date: Tue, 10 Dec 2024 17:57:06 -0500
Subject: [PATCH 22/37] config/coreboot-novacustom-v560tu.config: reuse changes
 proposed under https://github.com/linuxboot/heads/pull/1871 but not yet taken
 under https://github.com/linuxboot/heads/pull/1846

BOOTSPLASH section missing, as well as ME still enabled...

Signed-off-by: Thierry Laurion <insurgo@riseup.net>
---
 config/coreboot-novacustom-v560tu.config | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/config/coreboot-novacustom-v560tu.config b/config/coreboot-novacustom-v560tu.config
index 7de17244..77b5347a 100644
--- a/config/coreboot-novacustom-v560tu.config
+++ b/config/coreboot-novacustom-v560tu.config
@@ -549,7 +549,7 @@ CONFIG_EC_SYSTEM76_EC=y
 #
 # Intel Firmware
 #
-# CONFIG_IFDTOOL_DISABLE_ME is not set
+CONFIG_IFDTOOL_DISABLE_ME=y
 CONFIG_HAVE_ME_BIN=y
 # CONFIG_STITCH_ME_BIN is not set
 # CONFIG_ME_REGION_ALLOW_CPU_READ_ACCESS is not set

From b98492377c56a1984ccc44a20ae86f19715fb920 Mon Sep 17 00:00:00 2001
From: Thierry Laurion <insurgo@riseup.net>
Date: Tue, 10 Dec 2024 19:24:56 -0500
Subject: [PATCH 23/37] v560tu/v540tu board configs: adapt FLASH_OPTIONS to not
 overwrite GBE region, document S3/S01x/Hibernation limitation which is
 lackking from https://github.com/linuxboot/heads/pull/1846

Signed-off-by: Thierry Laurion <insurgo@riseup.net>
---
 boards/novacustom-v540tu/novacustom-v540tu.config | 7 ++++++-
 boards/novacustom-v560tu/novacustom-v560tu.config | 7 ++++++-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/boards/novacustom-v540tu/novacustom-v540tu.config b/boards/novacustom-v540tu/novacustom-v540tu.config
index 54a72ad0..c95d0586 100644
--- a/boards/novacustom-v540tu/novacustom-v540tu.config
+++ b/boards/novacustom-v540tu/novacustom-v540tu.config
@@ -1,4 +1,9 @@
 # NovaCustom V54 MTL (integrated graphics) board configuration
+# Note the FLASH_OPTIONS: '--ifd -i bios -i me -i fd'
+#  This excludes gbe from internal flashing, otherwise mac address would revert to '88:88:88:88:87:88' see https://github.com/linuxboot/heads/pull/1871#discussion_r1870134788
+#   Same options should be used when externally flashing the first time, otherwise Intel GBE region (Ethernet config blob) will be overwitten and MAC reverted to '88:88:88:88:87:88'
+
+# Meteor Lake (Intel Gen 14) is not supposed to support s3 but coincidently does. In case s3 is broken, user must configure settings to not suspend or otherwise enable ME/CSME for s01x to work (unsupported by QubesOS when writing those lines) or use Hibernate (Not supported by QubesOS either)
 
 export CONFIG_COREBOOT=y
 export CONFIG_COREBOOT_VERSION=dasharo
@@ -72,5 +77,5 @@ export CONFIG_BOOT_REQ_ROLLBACK=n
 export CONFIG_BOOT_KERNEL_ADD=""
 export CONFIG_BOOT_KERNEL_REMOVE="intel_iommu=on intel_iommu=igfx_off"
 export CONFIG_BOARD_NAME="NovaCustom V540TU"
-export CONFIG_FLASH_OPTIONS="flashprog --progress --programmer internal"
+export CONFIG_FLASH_OPTIONS="flashprog --progress --programmer internal --ifd -i bios -i me -i fd"
 export CONFIG_AUTO_BOOT_TIMEOUT=5
diff --git a/boards/novacustom-v560tu/novacustom-v560tu.config b/boards/novacustom-v560tu/novacustom-v560tu.config
index 1e6e5972..51699c4a 100644
--- a/boards/novacustom-v560tu/novacustom-v560tu.config
+++ b/boards/novacustom-v560tu/novacustom-v560tu.config
@@ -1,4 +1,9 @@
 # NovaCustom V54 MTL (integrated graphics) board configuration
+# Note the FLASH_OPTIONS: '--ifd -i bios -i me -i fd'
+#  This excludes gbe from internal flashing, otherwise mac address would revert to '88:88:88:88:87:88' see https://github.com/linuxboot/heads/pull/1871#discussion_r1870134788
+#   Same options should be used when externally flashing the first time, otherwise Intel GBE region (Ethernet config blob) will be overwitten and MAC reverted to '88:88:88:88:87:88'
+
+# Meteor Lake (Intel Gen 14) is not supposed to support s3 but coincidently does. In case s3 is broken, user must configure settings to not suspend or otherwise enable ME/CSME for s01x to work (unsupported by QubesOS when writing those lines) or use Hibernate (Not supported by QubesOS either)
 
 export CONFIG_COREBOOT=y
 export CONFIG_COREBOOT_VERSION=dasharo
@@ -72,5 +77,5 @@ export CONFIG_BOOT_REQ_ROLLBACK=n
 export CONFIG_BOOT_KERNEL_ADD=""
 export CONFIG_BOOT_KERNEL_REMOVE="intel_iommu=on intel_iommu=igfx_off"
 export CONFIG_BOARD_NAME="NovaCustom V540TU"
-export CONFIG_FLASH_OPTIONS="flashprog --progress --programmer internal"
+export CONFIG_FLASH_OPTIONS="flashprog --progress --programmer internal --ifd -i bios -i me -i fd"
 export CONFIG_AUTO_BOOT_TIMEOUT=5

From a09b64d390429094b4df1ed4e983769e14e29d0b Mon Sep 17 00:00:00 2001
From: Thierry Laurion <insurgo@riseup.net>
Date: Wed, 11 Dec 2024 11:05:43 -0500
Subject: [PATCH 24/37] v560tu/v540tu coreboot configs: add bootsplash, remove
 ME HAP bit to be applied by IFDTOOL to
 https://github.com/linuxboot/heads/pull/1846

Signed-off-by: Thierry Laurion <insurgo@riseup.net>
---
 config/coreboot-novacustom-v560tu.config | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/config/coreboot-novacustom-v560tu.config b/config/coreboot-novacustom-v560tu.config
index 77b5347a..7de17244 100644
--- a/config/coreboot-novacustom-v560tu.config
+++ b/config/coreboot-novacustom-v560tu.config
@@ -549,7 +549,7 @@ CONFIG_EC_SYSTEM76_EC=y
 #
 # Intel Firmware
 #
-CONFIG_IFDTOOL_DISABLE_ME=y
+# CONFIG_IFDTOOL_DISABLE_ME is not set
 CONFIG_HAVE_ME_BIN=y
 # CONFIG_STITCH_ME_BIN is not set
 # CONFIG_ME_REGION_ALLOW_CPU_READ_ACCESS is not set

From f45452b7368e347fa064831ce778e9deaf55ed7d Mon Sep 17 00:00:00 2001
From: Thierry Laurion <insurgo@riseup.net>
Date: Wed, 11 Dec 2024 13:50:41 -0500
Subject: [PATCH 25/37] nv4x_adl/ns50 coreboot config bumped to 24.02.01 with
 save in old config helper

Signed-off-by: Thierry Laurion <insurgo@riseup.net>
---
 config/coreboot-nitropad-ns50.config       | 52 +++++++++++++++++-----
 config/coreboot-novacustom_nv4x_adl.config | 52 +++++++++++++++++-----
 2 files changed, 80 insertions(+), 24 deletions(-)

diff --git a/config/coreboot-nitropad-ns50.config b/config/coreboot-nitropad-ns50.config
index f7f95058..d777c25b 100644
--- a/config/coreboot-nitropad-ns50.config
+++ b/config/coreboot-nitropad-ns50.config
@@ -22,6 +22,7 @@ CONFIG_USE_OPTION_TABLE=y
 # CONFIG_STATIC_OPTION_TABLE is not set
 CONFIG_COMPRESS_RAMSTAGE_LZMA=y
 # CONFIG_COMPRESS_RAMSTAGE_LZ4 is not set
+CONFIG_SEPARATE_ROMSTAGE=y
 CONFIG_INCLUDE_CONFIG_FILE=y
 CONFIG_COLLECT_TIMESTAMPS=y
 # CONFIG_TIMESTAMPS_ON_CONSOLE is not set
@@ -79,6 +80,7 @@ CONFIG_BOOTSPLASH_CONVERT_QUALITY=90
 # CONFIG_VENDOR_GETAC is not set
 # CONFIG_VENDOR_GIGABYTE is not set
 # CONFIG_VENDOR_GOOGLE is not set
+# CONFIG_VENDOR_HARDKERNEL is not set
 # CONFIG_VENDOR_HP is not set
 # CONFIG_VENDOR_IBASE is not set
 # CONFIG_VENDOR_IBM is not set
@@ -147,6 +149,7 @@ CONFIG_TPM_PIRQ=0x27
 # CONFIG_SOC_INTEL_CSE_SEND_EOP_EARLY is not set
 CONFIG_VBOOT_FWID_VERSION="$(CONFIG_LOCALVERSION)"
 CONFIG_EC_SYSTEM76_EC_BAT_THRESHOLDS=y
+CONFIG_EC_SYSTEM76_EC_FLASH_SIZE=0x20000
 CONFIG_ECAM_MMCONF_BASE_ADDRESS=0xc0000000
 CONFIG_ECAM_MMCONF_BUS_NUMBER=256
 CONFIG_MEMLAYOUT_LD_FILE="src/arch/x86/memlayout.ld"
@@ -161,7 +164,6 @@ CONFIG_DRIVERS_INTEL_WIFI=y
 CONFIG_IFD_BIN_PATH="3rdparty/dasharo-blobs/novacustom/ns5x_adl/descriptor.bin"
 CONFIG_ME_BIN_PATH="3rdparty/dasharo-blobs/novacustom/ns5x_adl/me.bin"
 CONFIG_CONSOLE_CBMEM_BUFFER_SIZE=0x20000
-CONFIG_VBT_DATA_SIZE_KB=9
 CONFIG_CARDBUS_PLUGIN_SUPPORT=y
 CONFIG_SPI_FLASH_DONT_INCLUDE_ALL_DRIVERS=y
 # CONFIG_USE_LEGACY_8254_TIMER is not set
@@ -191,7 +193,7 @@ CONFIG_PCIEXP_L1_SUB_STATE=y
 CONFIG_PCIEXP_CLK_PM=y
 # CONFIG_DRIVERS_UART_8250IO is not set
 CONFIG_PC_CMOS_BASE_PORT_BANK1=0x72
-CONFIG_HEAP_SIZE=0x10000
+CONFIG_FSP_TEMP_RAM_SIZE=0x20000
 CONFIG_EC_GPE_SCI=0x50
 CONFIG_TPM_MEASURED_BOOT=y
 CONFIG_LINUX_COMMAND_LINE="quiet loglevel=2"
@@ -207,6 +209,7 @@ CONFIG_BOARD_ROMSIZE_KB_32768=y
 # CONFIG_COREBOOT_ROMSIZE_KB_10240 is not set
 # CONFIG_COREBOOT_ROMSIZE_KB_12288 is not set
 # CONFIG_COREBOOT_ROMSIZE_KB_16384 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_24576 is not set
 CONFIG_COREBOOT_ROMSIZE_KB_32768=y
 # CONFIG_COREBOOT_ROMSIZE_KB_65536 is not set
 CONFIG_COREBOOT_ROMSIZE_KB=32768
@@ -233,7 +236,6 @@ CONFIG_FSP_M_FILE="$(obj)/Fsp_M.fd"
 CONFIG_FSP_S_FILE="$(obj)/Fsp_S.fd"
 CONFIG_CBFS_MCACHE_SIZE=0x4000
 CONFIG_ROMSTAGE_ADDR=0x2000000
-CONFIG_FSP_TEMP_RAM_SIZE=0x20000
 CONFIG_VERSTAGE_ADDR=0x2000000
 CONFIG_CONSOLE_UART_BASE_ADDRESS=0xfe03e000
 CONFIG_SMM_TSEG_SIZE=0x800000
@@ -243,6 +245,8 @@ CONFIG_ACPI_BERT=y
 CONFIG_ACPI_BERT_SIZE=0x10000
 CONFIG_DRIVERS_I2C_DESIGNWARE_CLOCK_MHZ=133
 CONFIG_VBOOT_HASH_BLOCK_SIZE=0x1000
+CONFIG_PRERAM_CBFS_CACHE_SIZE=0x4000
+CONFIG_DOMAIN_RESOURCE_32BIT_LIMIT=0xe0000000
 CONFIG_ACPI_CPU_STRING="CP%02X"
 CONFIG_STACK_SIZE=0x2000
 CONFIG_SOC_INTEL_ALDERLAKE=y
@@ -273,12 +277,11 @@ CONFIG_SOC_INTEL_UART_DEV_MAX=7
 CONFIG_SOC_INTEL_COMMON_LPSS_UART_CLK_M_VAL=0x25a
 CONFIG_SOC_INTEL_COMMON_LPSS_UART_CLK_N_VAL=0x7fff
 CONFIG_FSP_HEADER_PATH="3rdparty/fsp/AlderLakeFspBinPkg/Client/AlderLakeP/Include/"
-CONFIG_FSP_FD_PATH="3rdparty/fsp/AlderLakeFspBinPkg/Client/AlderLakeP/Fsp.fd"
+CONFIG_FSP_FD_PATH="3rdparty/fsp/RaptorLakeFspBinPkg/Client/RaptorLakeP/Fsp.fd"
 CONFIG_SOC_INTEL_ALDERLAKE_DEBUG_CONSENT=0
 CONFIG_DATA_BUS_WIDTH=128
 CONFIG_DIMMS_PER_CHANNEL=2
 CONFIG_MRC_CHANNEL_WIDTH=16
-CONFIG_ACPI_ADL_IPU_ES_SUPPORT=y
 CONFIG_ALDERLAKE_ENABLE_SOC_WORKAROUND=y
 CONFIG_SI_DESC_REGION="SI_DESC"
 CONFIG_SI_DESC_REGION_SZ=4096
@@ -295,9 +298,11 @@ CONFIG_BOOTBLOCK_IN_CBFS=y
 CONFIG_HAVE_PAM0_REGISTER=y
 CONFIG_PCIEXP_COMMON_CLOCK=y
 CONFIG_CPU_INTEL_NUM_FIT_ENTRIES=4
+CONFIG_CPU_MAX_TEMPERATURE=100
 CONFIG_SOC_INTEL_GFX_FRAMEBUFFER_OFFSET=0x0
 CONFIG_PCIE_LTR_MAX_SNOOP_LATENCY=0x1003
 CONFIG_PCIE_LTR_MAX_NO_SNOOP_LATENCY=0x1003
+CONFIG_SOC_PHYSICAL_ADDRESS_WIDTH=0
 CONFIG_INTEL_TME=y
 CONFIG_SOC_INTEL_COMMON_BLOCK_P2SB=y
 CONFIG_FIXED_SMBUS_IO_BASE=0xefa0
@@ -382,6 +387,7 @@ CONFIG_SOC_INTEL_COMMON_BLOCK_LPSS=y
 CONFIG_SOC_INTEL_COMMON_BLOCK_MEMINIT=y
 CONFIG_SOC_INTEL_COMMON_BLOCK_OC_WDT=y
 # CONFIG_SOC_INTEL_COMMON_OC_WDT_ENABLE is not set
+# CONFIG_SOC_INTEL_COMMON_OC_WDT_WDAT is not set
 CONFIG_SOC_INTEL_COMMON_BLOCK_BASE_P2SB=y
 CONFIG_SOC_INTEL_COMMON_BLOCK_PCIE=y
 CONFIG_SOC_INTEL_COMMON_BLOCK_PCIE_RTD3=y
@@ -403,10 +409,8 @@ CONFIG_SOC_INTEL_COMMON_BLOCK_SMM_IO_TRAP=y
 CONFIG_SOC_INTEL_COMMON_BLOCK_SMM_S5_DELAY_MS=0
 CONFIG_SOC_INTEL_COMMON_BLOCK_SPI=y
 CONFIG_SOC_INTEL_COMMON_BLOCK_SA=y
-CONFIG_DOMAIN_RESOURCE_32BIT_LIMIT=0xe0000000
 CONFIG_SOC_INTEL_COMMON_BLOCK_TCSS=y
-# CONFIG_ENABLE_TCSS_DISPLAY_DETECTION is not set
-# CONFIG_ENABLE_TCSS_USB_DETECTION is not set
+# CONFIG_TCSS_HAS_USBC_OPS is not set
 CONFIG_SOC_INTEL_COMMON_BLOCK_THERMAL=y
 CONFIG_SOC_INTEL_COMMON_BLOCK_THERMAL_BEHIND_PMC=y
 CONFIG_SOC_INTEL_COMMON_BLOCK_TIMER=y
@@ -416,6 +420,8 @@ CONFIG_SOC_INTEL_COMMON_BLOCK_USB4=y
 CONFIG_SOC_INTEL_COMMON_BLOCK_USB4_PCIE=y
 CONFIG_SOC_INTEL_COMMON_BLOCK_USB4_XHCI=y
 CONFIG_SOC_INTEL_ENABLE_USB4_PCIE_RESOURCES=y
+CONFIG_FIRMWARE_CONNECTION_MANAGER=y
+# CONFIG_SOFTWARE_CONNECTION_MANAGER is not set
 CONFIG_SOC_INTEL_COMMON_BLOCK_VTD=y
 # CONFIG_ENABLE_EARLY_DMA_PROTECTION is not set
 CONFIG_SOC_INTEL_COMMON_BLOCK_XDCI=y
@@ -437,7 +443,6 @@ CONFIG_PCH_SPECIFIC_CLIENT_OPTIONS=y
 # Intel SoC Common coreboot stages and non-IP blocks
 #
 CONFIG_SOC_INTEL_COMMON_BASECODE=y
-CONFIG_SOC_INTEL_COMMON_BASECODE_RAMTOP=y
 CONFIG_SOC_INTEL_COMMON_RESET=y
 CONFIG_SOC_INTEL_COMMON_ACPI_WAKE_SOURCE=y
 CONFIG_PAVP=y
@@ -506,6 +511,7 @@ CONFIG_RCBA_LENGTH=0x4000
 #
 CONFIG_EC_ACPI=y
 CONFIG_EC_SYSTEM76_EC=y
+# CONFIG_EC_SYSTEM76_EC_UPDATE is not set
 
 #
 # Intel Firmware
@@ -532,6 +538,7 @@ CONFIG_BIOS_VENDOR="3mdeb"
 # Dasharo Configuration
 #
 CONFIG_DASHARO_PREFER_S3_SLEEP=y
+# CONFIG_DASHARO_FIRMWARE_UPDATE_MODE is not set
 # end of Dasharo Configuration
 
 CONFIG_UDK_BASE=y
@@ -548,7 +555,10 @@ CONFIG_ARCH_ROMSTAGE_X86_32=y
 CONFIG_ARCH_POSTCAR_X86_32=y
 CONFIG_ARCH_RAMSTAGE_X86_32=y
 CONFIG_ARCH_ALL_STAGES_X86_32=y
+CONFIG_RESERVED_PHYSICAL_ADDRESS_BITS_SUPPORT=y
 CONFIG_X86_CUSTOM_BOOTMEDIA=y
+CONFIG_POSTRAM_CBFS_CACHE_IN_BSS=y
+CONFIG_RAMSTAGE_CBFS_CACHE_SIZE=0x4000
 CONFIG_PC80_SYSTEM=y
 CONFIG_HAVE_CMOS_DEFAULT=y
 CONFIG_POSTCAR_STAGE=y
@@ -585,7 +595,7 @@ CONFIG_BOOTSPLASH=y
 CONFIG_PCI=y
 CONFIG_ECAM_MMCONF_SUPPORT=y
 CONFIG_PCIX_PLUGIN_SUPPORT=y
-CONFIG_AZALIA_PLUGIN_SUPPORT=y
+CONFIG_AZALIA_HDA_CODEC_SUPPORT=y
 CONFIG_AZALIA_LOCK_DOWN_R_WO_GCAP=y
 CONFIG_PCIEXP_PLUGIN_SUPPORT=y
 CONFIG_ECAM_MMCONF_LENGTH=0x10000000
@@ -596,8 +606,6 @@ CONFIG_PCI_ALLOW_BUS_MASTER_ANY_DEVICE=y
 # CONFIG_PCIEXP_LANE_ERR_STAT_CLEAR is not set
 CONFIG_PCIEXP_HOTPLUG_PREFETCH_MEM_BELOW_4G=y
 CONFIG_PCIEXP_HOTPLUG_IO=0x2000
-CONFIG_FIRMWARE_CONNECTION_MANAGER=y
-# CONFIG_SOFTWARE_CONNECTION_MANAGER is not set
 # CONFIG_EARLY_PCI_BRIDGE is not set
 CONFIG_SUBSYSTEM_VENDOR_ID=0x0000
 CONFIG_SUBSYSTEM_DEVICE_ID=0x0000
@@ -667,7 +675,12 @@ CONFIG_FSP_USES_CB_DEBUG_EVENT_HANDLER=y
 CONFIG_FSP_ENABLE_SERIAL_DEBUG=y
 CONFIG_FSP_MULTIPHASE_SI_INIT_RETURN_BROKEN=y
 CONFIG_INTEL_GMA_ACPI=y
+CONFIG_VBT_CBFS_COMPRESSION_LZMA=y
+# CONFIG_VBT_CBFS_COMPRESSION_LZ4 is not set
+# CONFIG_VBT_CBFS_COMPRESSION_NONE is not set
+CONFIG_VBT_CBFS_COMPRESSION_ALGORITHM="lzma"
 CONFIG_INTEL_GMA_OPREGION_2_1=y
+CONFIG_INTEL_GMA_VERSION_2=y
 CONFIG_DRIVERS_INTEL_PMC=y
 # CONFIG_DRIVERS_NXP_UWB_SR1XX is not set
 # CONFIG_DRIVERS_PS2_KEYBOARD is not set
@@ -679,6 +692,7 @@ CONFIG_TPM_TIS_BASE_ADDRESS=0xfed40000
 # CONFIG_DRIVERS_SIL_3114 is not set
 CONFIG_DRIVERS_USB_ACPI=y
 CONFIG_DRIVERS_WIFI_GENERIC=y
+CONFIG_DRIVERS_MTK_WIFI=y
 CONFIG_MP_SERVICES_PPI=y
 CONFIG_MP_SERVICES_PPI_V2=y
 CONFIG_DRIVERS_INTEL_USB4_RETIMER=y
@@ -719,6 +733,7 @@ CONFIG_TPM_MEASURED_BOOT_RUNTIME_DATA=""
 CONFIG_PCR_BOOT_MODE=1
 CONFIG_PCR_HWID=1
 CONFIG_PCR_SRTM=2
+CONFIG_PCR_FW_VER=10
 CONFIG_PCR_RUNTIME_DATA=3
 # end of Trusted Platform Module
 
@@ -738,6 +753,7 @@ CONFIG_BOOTMEDIA_LOCK_CONTROLLER=y
 # CONFIG_BOOTMEDIA_LOCK_CHIP is not set
 CONFIG_BOOTMEDIA_LOCK_WHOLE_RO=y
 # CONFIG_BOOTMEDIA_LOCK_WHOLE_NO_ACCESS is not set
+# CONFIG_BOOTMEDIA_LOCK_WPRO_VBOOT_RO is not set
 # CONFIG_BOOTMEDIA_SMM_BWP is not set
 # end of Security
 
@@ -752,6 +768,7 @@ CONFIG_BOOT_DEVICE_SPI_FLASH=y
 CONFIG_BOOT_DEVICE_MEMORY_MAPPED=y
 CONFIG_BOOT_DEVICE_SUPPORTS_WRITES=y
 CONFIG_RTC=y
+CONFIG_HEAP_SIZE=0x100000
 
 #
 # Console
@@ -815,6 +832,13 @@ CONFIG_PAYLOAD_FILE="@BOARD_BUILD_DIR@/bzImage"
 CONFIG_PAYLOAD_OPTIONS=""
 # CONFIG_PXE is not set
 CONFIG_LINUX_INITRD="@BOARD_BUILD_DIR@/initrd.cpio.xz"
+
+#
+# Dasharo specific payload options
+#
+# end of Dasharo specific payload options
+
+# CONFIG_PAYLOAD_IS_FLAT_BINARY is not set
 CONFIG_COMPRESS_SECONDARY_PAYLOAD=y
 
 #
@@ -839,6 +863,10 @@ CONFIG_COMPRESS_SECONDARY_PAYLOAD=y
 #
 # CONFIG_DISPLAY_MTRRS is not set
 
+#
+# Vendorcode Debug Settings
+#
+
 #
 # BLOB Debug Settings
 #
diff --git a/config/coreboot-novacustom_nv4x_adl.config b/config/coreboot-novacustom_nv4x_adl.config
index a8bea3cc..d36edb6b 100644
--- a/config/coreboot-novacustom_nv4x_adl.config
+++ b/config/coreboot-novacustom_nv4x_adl.config
@@ -22,6 +22,7 @@ CONFIG_USE_OPTION_TABLE=y
 # CONFIG_STATIC_OPTION_TABLE is not set
 CONFIG_COMPRESS_RAMSTAGE_LZMA=y
 # CONFIG_COMPRESS_RAMSTAGE_LZ4 is not set
+CONFIG_SEPARATE_ROMSTAGE=y
 CONFIG_INCLUDE_CONFIG_FILE=y
 CONFIG_COLLECT_TIMESTAMPS=y
 # CONFIG_TIMESTAMPS_ON_CONSOLE is not set
@@ -79,6 +80,7 @@ CONFIG_BOOTSPLASH_CONVERT_QUALITY=90
 # CONFIG_VENDOR_GETAC is not set
 # CONFIG_VENDOR_GIGABYTE is not set
 # CONFIG_VENDOR_GOOGLE is not set
+# CONFIG_VENDOR_HARDKERNEL is not set
 # CONFIG_VENDOR_HP is not set
 # CONFIG_VENDOR_IBASE is not set
 # CONFIG_VENDOR_IBM is not set
@@ -147,6 +149,7 @@ CONFIG_TPM_PIRQ=0x27
 # CONFIG_SOC_INTEL_CSE_SEND_EOP_EARLY is not set
 CONFIG_VBOOT_FWID_VERSION="$(CONFIG_LOCALVERSION)"
 CONFIG_EC_SYSTEM76_EC_BAT_THRESHOLDS=y
+CONFIG_EC_SYSTEM76_EC_FLASH_SIZE=0x20000
 CONFIG_ECAM_MMCONF_BASE_ADDRESS=0xc0000000
 CONFIG_ECAM_MMCONF_BUS_NUMBER=256
 CONFIG_MEMLAYOUT_LD_FILE="src/arch/x86/memlayout.ld"
@@ -161,7 +164,6 @@ CONFIG_DRIVERS_INTEL_WIFI=y
 CONFIG_IFD_BIN_PATH="3rdparty/dasharo-blobs/novacustom/nv4x_adl/descriptor.bin"
 CONFIG_ME_BIN_PATH="3rdparty/dasharo-blobs/novacustom/nv4x_adl/me.bin"
 CONFIG_CONSOLE_CBMEM_BUFFER_SIZE=0x20000
-CONFIG_VBT_DATA_SIZE_KB=9
 CONFIG_CARDBUS_PLUGIN_SUPPORT=y
 CONFIG_SPI_FLASH_DONT_INCLUDE_ALL_DRIVERS=y
 # CONFIG_USE_LEGACY_8254_TIMER is not set
@@ -191,7 +193,7 @@ CONFIG_PCIEXP_L1_SUB_STATE=y
 CONFIG_PCIEXP_CLK_PM=y
 # CONFIG_DRIVERS_UART_8250IO is not set
 CONFIG_PC_CMOS_BASE_PORT_BANK1=0x72
-CONFIG_HEAP_SIZE=0x10000
+CONFIG_FSP_TEMP_RAM_SIZE=0x20000
 CONFIG_EC_GPE_SCI=0x50
 CONFIG_TPM_MEASURED_BOOT=y
 CONFIG_LINUX_COMMAND_LINE="quiet loglevel=2"
@@ -207,6 +209,7 @@ CONFIG_BOARD_ROMSIZE_KB_32768=y
 # CONFIG_COREBOOT_ROMSIZE_KB_10240 is not set
 # CONFIG_COREBOOT_ROMSIZE_KB_12288 is not set
 # CONFIG_COREBOOT_ROMSIZE_KB_16384 is not set
+# CONFIG_COREBOOT_ROMSIZE_KB_24576 is not set
 CONFIG_COREBOOT_ROMSIZE_KB_32768=y
 # CONFIG_COREBOOT_ROMSIZE_KB_65536 is not set
 CONFIG_COREBOOT_ROMSIZE_KB=32768
@@ -233,7 +236,6 @@ CONFIG_FSP_M_FILE="$(obj)/Fsp_M.fd"
 CONFIG_FSP_S_FILE="$(obj)/Fsp_S.fd"
 CONFIG_CBFS_MCACHE_SIZE=0x4000
 CONFIG_ROMSTAGE_ADDR=0x2000000
-CONFIG_FSP_TEMP_RAM_SIZE=0x20000
 CONFIG_VERSTAGE_ADDR=0x2000000
 CONFIG_CONSOLE_UART_BASE_ADDRESS=0xfe03e000
 CONFIG_SMM_TSEG_SIZE=0x800000
@@ -243,6 +245,8 @@ CONFIG_ACPI_BERT=y
 CONFIG_ACPI_BERT_SIZE=0x10000
 CONFIG_DRIVERS_I2C_DESIGNWARE_CLOCK_MHZ=133
 CONFIG_VBOOT_HASH_BLOCK_SIZE=0x1000
+CONFIG_PRERAM_CBFS_CACHE_SIZE=0x4000
+CONFIG_DOMAIN_RESOURCE_32BIT_LIMIT=0xe0000000
 CONFIG_ACPI_CPU_STRING="CP%02X"
 CONFIG_STACK_SIZE=0x2000
 CONFIG_SOC_INTEL_ALDERLAKE=y
@@ -273,12 +277,11 @@ CONFIG_SOC_INTEL_UART_DEV_MAX=7
 CONFIG_SOC_INTEL_COMMON_LPSS_UART_CLK_M_VAL=0x25a
 CONFIG_SOC_INTEL_COMMON_LPSS_UART_CLK_N_VAL=0x7fff
 CONFIG_FSP_HEADER_PATH="3rdparty/fsp/AlderLakeFspBinPkg/Client/AlderLakeP/Include/"
-CONFIG_FSP_FD_PATH="3rdparty/fsp/AlderLakeFspBinPkg/Client/AlderLakeP/Fsp.fd"
+CONFIG_FSP_FD_PATH="3rdparty/fsp/RaptorLakeFspBinPkg/Client/RaptorLakeP/Fsp.fd"
 CONFIG_SOC_INTEL_ALDERLAKE_DEBUG_CONSENT=0
 CONFIG_DATA_BUS_WIDTH=128
 CONFIG_DIMMS_PER_CHANNEL=2
 CONFIG_MRC_CHANNEL_WIDTH=16
-CONFIG_ACPI_ADL_IPU_ES_SUPPORT=y
 CONFIG_ALDERLAKE_ENABLE_SOC_WORKAROUND=y
 CONFIG_SI_DESC_REGION="SI_DESC"
 CONFIG_SI_DESC_REGION_SZ=4096
@@ -295,9 +298,11 @@ CONFIG_BOOTBLOCK_IN_CBFS=y
 CONFIG_HAVE_PAM0_REGISTER=y
 CONFIG_PCIEXP_COMMON_CLOCK=y
 CONFIG_CPU_INTEL_NUM_FIT_ENTRIES=4
+CONFIG_CPU_MAX_TEMPERATURE=100
 CONFIG_SOC_INTEL_GFX_FRAMEBUFFER_OFFSET=0x0
 CONFIG_PCIE_LTR_MAX_SNOOP_LATENCY=0x1003
 CONFIG_PCIE_LTR_MAX_NO_SNOOP_LATENCY=0x1003
+CONFIG_SOC_PHYSICAL_ADDRESS_WIDTH=0
 CONFIG_INTEL_TME=y
 CONFIG_SOC_INTEL_COMMON_BLOCK_P2SB=y
 CONFIG_FIXED_SMBUS_IO_BASE=0xefa0
@@ -382,6 +387,7 @@ CONFIG_SOC_INTEL_COMMON_BLOCK_LPSS=y
 CONFIG_SOC_INTEL_COMMON_BLOCK_MEMINIT=y
 CONFIG_SOC_INTEL_COMMON_BLOCK_OC_WDT=y
 # CONFIG_SOC_INTEL_COMMON_OC_WDT_ENABLE is not set
+# CONFIG_SOC_INTEL_COMMON_OC_WDT_WDAT is not set
 CONFIG_SOC_INTEL_COMMON_BLOCK_BASE_P2SB=y
 CONFIG_SOC_INTEL_COMMON_BLOCK_PCIE=y
 CONFIG_SOC_INTEL_COMMON_BLOCK_PCIE_RTD3=y
@@ -403,10 +409,8 @@ CONFIG_SOC_INTEL_COMMON_BLOCK_SMM_IO_TRAP=y
 CONFIG_SOC_INTEL_COMMON_BLOCK_SMM_S5_DELAY_MS=0
 CONFIG_SOC_INTEL_COMMON_BLOCK_SPI=y
 CONFIG_SOC_INTEL_COMMON_BLOCK_SA=y
-CONFIG_DOMAIN_RESOURCE_32BIT_LIMIT=0xe0000000
 CONFIG_SOC_INTEL_COMMON_BLOCK_TCSS=y
-# CONFIG_ENABLE_TCSS_DISPLAY_DETECTION is not set
-# CONFIG_ENABLE_TCSS_USB_DETECTION is not set
+# CONFIG_TCSS_HAS_USBC_OPS is not set
 CONFIG_SOC_INTEL_COMMON_BLOCK_THERMAL=y
 CONFIG_SOC_INTEL_COMMON_BLOCK_THERMAL_BEHIND_PMC=y
 CONFIG_SOC_INTEL_COMMON_BLOCK_TIMER=y
@@ -416,6 +420,8 @@ CONFIG_SOC_INTEL_COMMON_BLOCK_USB4=y
 CONFIG_SOC_INTEL_COMMON_BLOCK_USB4_PCIE=y
 CONFIG_SOC_INTEL_COMMON_BLOCK_USB4_XHCI=y
 CONFIG_SOC_INTEL_ENABLE_USB4_PCIE_RESOURCES=y
+CONFIG_FIRMWARE_CONNECTION_MANAGER=y
+# CONFIG_SOFTWARE_CONNECTION_MANAGER is not set
 CONFIG_SOC_INTEL_COMMON_BLOCK_VTD=y
 # CONFIG_ENABLE_EARLY_DMA_PROTECTION is not set
 CONFIG_SOC_INTEL_COMMON_BLOCK_XDCI=y
@@ -437,7 +443,6 @@ CONFIG_PCH_SPECIFIC_CLIENT_OPTIONS=y
 # Intel SoC Common coreboot stages and non-IP blocks
 #
 CONFIG_SOC_INTEL_COMMON_BASECODE=y
-CONFIG_SOC_INTEL_COMMON_BASECODE_RAMTOP=y
 CONFIG_SOC_INTEL_COMMON_RESET=y
 CONFIG_SOC_INTEL_COMMON_ACPI_WAKE_SOURCE=y
 CONFIG_PAVP=y
@@ -507,6 +512,7 @@ CONFIG_RCBA_LENGTH=0x4000
 CONFIG_EC_ACPI=y
 CONFIG_EC_SYSTEM76_EC=y
 CONFIG_EC_SYSTEM76_EC_DGPU=y
+# CONFIG_EC_SYSTEM76_EC_UPDATE is not set
 
 #
 # Intel Firmware
@@ -533,6 +539,7 @@ CONFIG_BIOS_VENDOR="3mdeb"
 # Dasharo Configuration
 #
 CONFIG_DASHARO_PREFER_S3_SLEEP=y
+# CONFIG_DASHARO_FIRMWARE_UPDATE_MODE is not set
 # end of Dasharo Configuration
 
 CONFIG_UDK_BASE=y
@@ -549,7 +556,10 @@ CONFIG_ARCH_ROMSTAGE_X86_32=y
 CONFIG_ARCH_POSTCAR_X86_32=y
 CONFIG_ARCH_RAMSTAGE_X86_32=y
 CONFIG_ARCH_ALL_STAGES_X86_32=y
+CONFIG_RESERVED_PHYSICAL_ADDRESS_BITS_SUPPORT=y
 CONFIG_X86_CUSTOM_BOOTMEDIA=y
+CONFIG_POSTRAM_CBFS_CACHE_IN_BSS=y
+CONFIG_RAMSTAGE_CBFS_CACHE_SIZE=0x4000
 CONFIG_PC80_SYSTEM=y
 CONFIG_HAVE_CMOS_DEFAULT=y
 CONFIG_POSTCAR_STAGE=y
@@ -586,7 +596,7 @@ CONFIG_BOOTSPLASH=y
 CONFIG_PCI=y
 CONFIG_ECAM_MMCONF_SUPPORT=y
 CONFIG_PCIX_PLUGIN_SUPPORT=y
-CONFIG_AZALIA_PLUGIN_SUPPORT=y
+CONFIG_AZALIA_HDA_CODEC_SUPPORT=y
 CONFIG_AZALIA_LOCK_DOWN_R_WO_GCAP=y
 CONFIG_PCIEXP_PLUGIN_SUPPORT=y
 CONFIG_ECAM_MMCONF_LENGTH=0x10000000
@@ -597,8 +607,6 @@ CONFIG_PCI_ALLOW_BUS_MASTER_ANY_DEVICE=y
 # CONFIG_PCIEXP_LANE_ERR_STAT_CLEAR is not set
 CONFIG_PCIEXP_HOTPLUG_PREFETCH_MEM_BELOW_4G=y
 CONFIG_PCIEXP_HOTPLUG_IO=0x2000
-CONFIG_FIRMWARE_CONNECTION_MANAGER=y
-# CONFIG_SOFTWARE_CONNECTION_MANAGER is not set
 # CONFIG_EARLY_PCI_BRIDGE is not set
 CONFIG_SUBSYSTEM_VENDOR_ID=0x0000
 CONFIG_SUBSYSTEM_DEVICE_ID=0x0000
@@ -668,7 +676,12 @@ CONFIG_FSP_USES_CB_DEBUG_EVENT_HANDLER=y
 CONFIG_FSP_ENABLE_SERIAL_DEBUG=y
 CONFIG_FSP_MULTIPHASE_SI_INIT_RETURN_BROKEN=y
 CONFIG_INTEL_GMA_ACPI=y
+CONFIG_VBT_CBFS_COMPRESSION_LZMA=y
+# CONFIG_VBT_CBFS_COMPRESSION_LZ4 is not set
+# CONFIG_VBT_CBFS_COMPRESSION_NONE is not set
+CONFIG_VBT_CBFS_COMPRESSION_ALGORITHM="lzma"
 CONFIG_INTEL_GMA_OPREGION_2_1=y
+CONFIG_INTEL_GMA_VERSION_2=y
 CONFIG_DRIVERS_INTEL_PMC=y
 # CONFIG_DRIVERS_NXP_UWB_SR1XX is not set
 # CONFIG_DRIVERS_PS2_KEYBOARD is not set
@@ -680,6 +693,7 @@ CONFIG_TPM_TIS_BASE_ADDRESS=0xfed40000
 # CONFIG_DRIVERS_SIL_3114 is not set
 CONFIG_DRIVERS_USB_ACPI=y
 CONFIG_DRIVERS_WIFI_GENERIC=y
+CONFIG_DRIVERS_MTK_WIFI=y
 CONFIG_MP_SERVICES_PPI=y
 CONFIG_MP_SERVICES_PPI_V2=y
 CONFIG_DRIVERS_INTEL_USB4_RETIMER=y
@@ -720,6 +734,7 @@ CONFIG_TPM_MEASURED_BOOT_RUNTIME_DATA=""
 CONFIG_PCR_BOOT_MODE=1
 CONFIG_PCR_HWID=1
 CONFIG_PCR_SRTM=2
+CONFIG_PCR_FW_VER=10
 CONFIG_PCR_RUNTIME_DATA=3
 # end of Trusted Platform Module
 
@@ -739,6 +754,7 @@ CONFIG_BOOTMEDIA_LOCK_CONTROLLER=y
 # CONFIG_BOOTMEDIA_LOCK_CHIP is not set
 CONFIG_BOOTMEDIA_LOCK_WHOLE_RO=y
 # CONFIG_BOOTMEDIA_LOCK_WHOLE_NO_ACCESS is not set
+# CONFIG_BOOTMEDIA_LOCK_WPRO_VBOOT_RO is not set
 # CONFIG_BOOTMEDIA_SMM_BWP is not set
 # end of Security
 
@@ -753,6 +769,7 @@ CONFIG_BOOT_DEVICE_SPI_FLASH=y
 CONFIG_BOOT_DEVICE_MEMORY_MAPPED=y
 CONFIG_BOOT_DEVICE_SUPPORTS_WRITES=y
 CONFIG_RTC=y
+CONFIG_HEAP_SIZE=0x100000
 
 #
 # Console
@@ -816,6 +833,13 @@ CONFIG_PAYLOAD_FILE="@BOARD_BUILD_DIR@/bzImage"
 CONFIG_PAYLOAD_OPTIONS=""
 # CONFIG_PXE is not set
 CONFIG_LINUX_INITRD="@BOARD_BUILD_DIR@/initrd.cpio.xz"
+
+#
+# Dasharo specific payload options
+#
+# end of Dasharo specific payload options
+
+# CONFIG_PAYLOAD_IS_FLAT_BINARY is not set
 CONFIG_COMPRESS_SECONDARY_PAYLOAD=y
 
 #
@@ -840,6 +864,10 @@ CONFIG_COMPRESS_SECONDARY_PAYLOAD=y
 #
 # CONFIG_DISPLAY_MTRRS is not set
 
+#
+# Vendorcode Debug Settings
+#
+
 #
 # BLOB Debug Settings
 #

From 1dba3e932f4c08ffa42f2b4391fe4629b8d249c3 Mon Sep 17 00:00:00 2001
From: Thierry Laurion <insurgo@riseup.net>
Date: Wed, 11 Dec 2024 15:55:09 -0500
Subject: [PATCH 26/37] CircleCI v560tu/v540tu: build atop x230-hotp-maximized
 workspace cache to reuse 24.02.01 coreboot buildstack, no point waiting for
 novacustom_nv4x_adl to be built. Gonna clear cache for next run and build
 clean

Signed-off-by: Thierry Laurion <insurgo@riseup.net>
---
 .circleci/config.yml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 478f6e38..7fc49938 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -519,18 +519,18 @@ workflows:
             - novacustom_nv4x_adl
 
       - build:
-          name: novacustom-v5460tu
+          name: novacustom-v560tu
           target: novacustom-v560tu
           subcommand: ""
           requires:
-            - novacustom_nv4x_adl
+            - x230-hotp-maximized
 
       - build:
           name: novacustom-v540tu
           target: novacustom-v540tu
           subcommand: ""
           requires:
-            - novacustom_nv4x_adl
+            - x230-hotp-maximized
 
 
       # coreboot 4.11

From f1299c1ce792d3bfc8675c84b519aabefabf7d1d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Wed, 18 Dec 2024 14:09:52 +0100
Subject: [PATCH 27/37] modules/coreboot: update for HAP disable fix
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 modules/coreboot | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/coreboot b/modules/coreboot
index ff7815e2..98d581ae 100644
--- a/modules/coreboot
+++ b/modules/coreboot
@@ -94,7 +94,7 @@ $(eval $(call coreboot_module,purism,24.02.01))
 # MSI and NovaCustom NV4xPZ, NS5xPU, V540TU, V560TU boards are based on Dasharo
 # coreboot fork, based on upstream coreboot version 24.02
 coreboot-dasharo_repo := https://github.com/dasharo/coreboot
-coreboot-dasharo_commit_hash := 9ead4a0789595fc6b6b0327e168088893b6ea592
+coreboot-dasharo_commit_hash := b8507b565918ddb68e3b2291cd3a8ce7044d2115
 $(eval $(call coreboot_module,dasharo,24.02.01))
 coreboot-dasharo_patch_version := unreleased
 

From 3f8a0df0288bbd3f34df5d33f5a572068194e66a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Wed, 18 Dec 2024 16:29:33 +0100
Subject: [PATCH 28/37] modules/coreboot: bump dasharo fork for FSP submodule
 fix
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 modules/coreboot | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/coreboot b/modules/coreboot
index 98d581ae..16aa7d7b 100644
--- a/modules/coreboot
+++ b/modules/coreboot
@@ -94,7 +94,7 @@ $(eval $(call coreboot_module,purism,24.02.01))
 # MSI and NovaCustom NV4xPZ, NS5xPU, V540TU, V560TU boards are based on Dasharo
 # coreboot fork, based on upstream coreboot version 24.02
 coreboot-dasharo_repo := https://github.com/dasharo/coreboot
-coreboot-dasharo_commit_hash := b8507b565918ddb68e3b2291cd3a8ce7044d2115
+coreboot-dasharo_commit_hash := 87852b0f89f998ac046e801ae26c6d2cfe85afe7
 $(eval $(call coreboot_module,dasharo,24.02.01))
 coreboot-dasharo_patch_version := unreleased
 

From e2237a6e7357b77e1a453e9438c80fac7c65c0e8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Fri, 10 Jan 2025 15:26:56 +0100
Subject: [PATCH 29/37] modules/coreboot: bump Dasharo fork for 96GB boot time
 fix
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 modules/coreboot | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/coreboot b/modules/coreboot
index 16aa7d7b..77176256 100644
--- a/modules/coreboot
+++ b/modules/coreboot
@@ -94,7 +94,7 @@ $(eval $(call coreboot_module,purism,24.02.01))
 # MSI and NovaCustom NV4xPZ, NS5xPU, V540TU, V560TU boards are based on Dasharo
 # coreboot fork, based on upstream coreboot version 24.02
 coreboot-dasharo_repo := https://github.com/dasharo/coreboot
-coreboot-dasharo_commit_hash := 87852b0f89f998ac046e801ae26c6d2cfe85afe7
+coreboot-dasharo_commit_hash := 8adaae026dc055fa8b445fbe32e5146576d56c28
 $(eval $(call coreboot_module,dasharo,24.02.01))
 coreboot-dasharo_patch_version := unreleased
 

From 3687dcbb5a9893b6f616293af93070de71b10f0a Mon Sep 17 00:00:00 2001
From: Thierry Laurion <insurgo@riseup.net>
Date: Thu, 19 Dec 2024 13:47:29 -0500
Subject: [PATCH 30/37] config/coreboot-novacustom-v560tu.config: switch
 CONFIG_USE_PC_CMOS_ALTCENTURY=y to CONFIG_USE_PC_CMOS_ALTCENTURY=n otherwise
 in year 2070 after initial external flashing

Signed-off-by: Thierry Laurion <insurgo@riseup.net>
---
 config/coreboot-novacustom-v560tu.config | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/config/coreboot-novacustom-v560tu.config b/config/coreboot-novacustom-v560tu.config
index 7de17244..01d555a3 100644
--- a/config/coreboot-novacustom-v560tu.config
+++ b/config/coreboot-novacustom-v560tu.config
@@ -721,7 +721,7 @@ CONFIG_DRIVERS_INTEL_PMC=y
 # CONFIG_DRIVERS_NXP_UWB_SR1XX is not set
 # CONFIG_DRIVERS_PS2_KEYBOARD is not set
 CONFIG_DRIVERS_MC146818=y
-CONFIG_USE_PC_CMOS_ALTCENTURY=y
+CONFIG_USE_PC_CMOS_ALTCENTURY=n
 CONFIG_PC_CMOS_BASE_PORT_BANK0=0x70
 CONFIG_MEMORY_MAPPED_TPM=y
 CONFIG_TPM_TIS_BASE_ADDRESS=0xfed40000

From b8cb467dd3dd26ff8ff335b1508d7638c7ad269a Mon Sep 17 00:00:00 2001
From: Thierry Laurion <insurgo@riseup.net>
Date: Wed, 8 Jan 2025 09:59:16 -0500
Subject: [PATCH 31/37] novacustom boards: rename linux-nittropad-x.config ->
 linux-novacustom-common.config, switch back to kernel 6.1.8, save config in
 oldconfig

Input for https://github.com/linuxboot/heads/pull/1846

Signed-off-by: Thierry Laurion <insurgo@riseup.net>
---
 boards/nitropad-ns50/nitropad-ns50.config     |   2 +-
 .../novacustom-v540tu.config                  |   4 +-
 .../novacustom-v560tu.config                  |   4 +-
 .../novacustom_nv4x_adl.config                |   2 +-
 ....config => linux-novacustom-common.config} | 415 ++++++------------
 5 files changed, 144 insertions(+), 283 deletions(-)
 rename config/{linux-nitropad-x.config => linux-novacustom-common.config} (92%)

diff --git a/boards/nitropad-ns50/nitropad-ns50.config b/boards/nitropad-ns50/nitropad-ns50.config
index ffcb9457..425d0680 100644
--- a/boards/nitropad-ns50/nitropad-ns50.config
+++ b/boards/nitropad-ns50/nitropad-ns50.config
@@ -6,7 +6,7 @@ export CONFIG_COREBOOT_VERSION=dasharo
 export CONFIG_LINUX_VERSION=6.1.8
 
 CONFIG_COREBOOT_CONFIG=config/coreboot-nitropad-ns50.config
-CONFIG_LINUX_CONFIG=config/linux-nitropad-x.config
+CONFIG_LINUX_CONFIG=config/linux-novacustom-common.config
 
 #Enable DEBUG output
 #export CONFIG_DEBUG_OUTPUT=y
diff --git a/boards/novacustom-v540tu/novacustom-v540tu.config b/boards/novacustom-v540tu/novacustom-v540tu.config
index c95d0586..3441e5e4 100644
--- a/boards/novacustom-v540tu/novacustom-v540tu.config
+++ b/boards/novacustom-v540tu/novacustom-v540tu.config
@@ -7,10 +7,10 @@
 
 export CONFIG_COREBOOT=y
 export CONFIG_COREBOOT_VERSION=dasharo
-export CONFIG_LINUX_VERSION=6.11.9
+export CONFIG_LINUX_VERSION=6.1.8
 
 CONFIG_COREBOOT_CONFIG=config/coreboot-novacustom-v540tu.config
-CONFIG_LINUX_CONFIG=config/linux-nitropad-x.config
+CONFIG_LINUX_CONFIG=config/linux-novacustom-common.config
 
 #Enable DEBUG output
 #export CONFIG_DEBUG_OUTPUT=y
diff --git a/boards/novacustom-v560tu/novacustom-v560tu.config b/boards/novacustom-v560tu/novacustom-v560tu.config
index 51699c4a..3f06062c 100644
--- a/boards/novacustom-v560tu/novacustom-v560tu.config
+++ b/boards/novacustom-v560tu/novacustom-v560tu.config
@@ -7,10 +7,10 @@
 
 export CONFIG_COREBOOT=y
 export CONFIG_COREBOOT_VERSION=dasharo
-export CONFIG_LINUX_VERSION=6.11.9
+export CONFIG_LINUX_VERSION=6.1.8
 
 CONFIG_COREBOOT_CONFIG=config/coreboot-novacustom-v560tu.config
-CONFIG_LINUX_CONFIG=config/linux-nitropad-x.config
+CONFIG_LINUX_CONFIG=config/linux-novacustom-common.config
 
 #Enable DEBUG output
 #export CONFIG_DEBUG_OUTPUT=y
diff --git a/boards/novacustom_nv4x_adl/novacustom_nv4x_adl.config b/boards/novacustom_nv4x_adl/novacustom_nv4x_adl.config
index 92ab67d4..256d2ddf 100644
--- a/boards/novacustom_nv4x_adl/novacustom_nv4x_adl.config
+++ b/boards/novacustom_nv4x_adl/novacustom_nv4x_adl.config
@@ -6,7 +6,7 @@ export CONFIG_COREBOOT_VERSION=dasharo
 export CONFIG_LINUX_VERSION=6.1.8
 
 CONFIG_COREBOOT_CONFIG=config/coreboot-novacustom_nv4x_adl.config
-CONFIG_LINUX_CONFIG=config/linux-nitropad-x.config
+CONFIG_LINUX_CONFIG=config/linux-novacustom-common.config
 
 #Enable DEBUG output
 #export CONFIG_DEBUG_OUTPUT=y
diff --git a/config/linux-nitropad-x.config b/config/linux-novacustom-common.config
similarity index 92%
rename from config/linux-nitropad-x.config
rename to config/linux-novacustom-common.config
index 73bab708..01bc65f6 100644
--- a/config/linux-nitropad-x.config
+++ b/config/linux-novacustom-common.config
@@ -1,6 +1,6 @@
 #
 # Automatically generated file; DO NOT EDIT.
-# Linux/x86 6.11.9 Kernel Configuration
+# Linux/x86 6.1.8 Kernel Configuration
 #
 CONFIG_CC_VERSION_TEXT="x86_64-linux-musl-gcc (GCC) 9.4.0"
 CONFIG_CC_IS_GCC=y
@@ -13,7 +13,6 @@ CONFIG_LD_VERSION=23301
 CONFIG_LLD_VERSION=0
 CONFIG_CC_CAN_LINK=y
 CONFIG_CC_CAN_LINK_STATIC=y
-CONFIG_GCC_ASM_GOTO_OUTPUT_BROKEN=y
 CONFIG_CC_HAS_ASM_INLINE=y
 CONFIG_CC_HAS_NO_PROFILE_FN_ATTR=y
 CONFIG_PAHOLE_VERSION=0
@@ -66,6 +65,7 @@ CONFIG_HARDIRQS_SW_RESEND=y
 CONFIG_IRQ_DOMAIN=y
 CONFIG_IRQ_DOMAIN_HIERARCHY=y
 CONFIG_GENERIC_MSI_IRQ=y
+CONFIG_GENERIC_MSI_IRQ_DOMAIN=y
 CONFIG_IRQ_MSI_IOMMU=y
 CONFIG_GENERIC_IRQ_MATRIX_ALLOCATOR=y
 CONFIG_GENERIC_IRQ_RESERVATION_MODE=y
@@ -79,7 +79,6 @@ CONFIG_CLOCKSOURCE_VALIDATE_LAST_CYCLE=y
 CONFIG_GENERIC_TIME_VSYSCALL=y
 CONFIG_GENERIC_CLOCKEVENTS=y
 CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
-CONFIG_GENERIC_CLOCKEVENTS_BROADCAST_IDLE=y
 CONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST=y
 CONFIG_GENERIC_CMOS_UPDATE=y
 CONFIG_HAVE_POSIX_CPU_TIMERS_TASK_WORK=y
@@ -134,6 +133,7 @@ CONFIG_TICK_CPU_ACCOUNTING=y
 #
 CONFIG_TREE_RCU=y
 # CONFIG_RCU_EXPERT is not set
+CONFIG_SRCU=y
 CONFIG_TREE_SRCU=y
 CONFIG_RCU_STALL_COMMON=y
 CONFIG_RCU_NEED_SEGCBLIST=y
@@ -143,6 +143,7 @@ CONFIG_RCU_NEED_SEGCBLIST=y
 # CONFIG_IKHEADERS is not set
 CONFIG_LOG_BUF_SHIFT=18
 CONFIG_LOG_CPU_MAX_BUF_SHIFT=12
+CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13
 CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
 
 #
@@ -155,14 +156,13 @@ CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y
 CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH=y
 CONFIG_CC_HAS_INT128=y
 CONFIG_CC_IMPLICIT_FALLTHROUGH="-Wimplicit-fallthrough=5"
-CONFIG_GCC10_NO_ARRAY_BOUNDS=y
-CONFIG_CC_NO_ARRAY_BOUNDS=y
-CONFIG_GCC_NO_STRINGOP_OVERFLOW=y
-CONFIG_CC_NO_STRINGOP_OVERFLOW=y
+CONFIG_GCC11_NO_ARRAY_BOUNDS=y
+CONFIG_GCC12_NO_ARRAY_BOUNDS=y
 CONFIG_ARCH_SUPPORTS_INT128=y
 # CONFIG_CGROUPS is not set
 # CONFIG_CHECKPOINT_RESTORE is not set
 # CONFIG_SCHED_AUTOGROUP is not set
+# CONFIG_SYSFS_DEPRECATED is not set
 # CONFIG_RELAY is not set
 CONFIG_BLK_DEV_INITRD=y
 CONFIG_INITRAMFS_SOURCE="@BLOB_DIR@/dev.cpio"
@@ -182,7 +182,6 @@ CONFIG_INITRAMFS_COMPRESSION_XZ=y
 # CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE is not set
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 CONFIG_LD_ORPHAN_WARN=y
-CONFIG_LD_ORPHAN_WARN_LEVEL="warn"
 CONFIG_SYSCTL=y
 CONFIG_SYSCTL_EXCEPTION_TRACE=y
 CONFIG_HAVE_PCSPKR_PLATFORM=y
@@ -195,7 +194,7 @@ CONFIG_POSIX_TIMERS=y
 CONFIG_PRINTK=y
 CONFIG_BUG=y
 CONFIG_PCSPKR_PLATFORM=y
-# CONFIG_BASE_SMALL is not set
+CONFIG_BASE_FULL=y
 CONFIG_FUTEX=y
 CONFIG_FUTEX_PI=y
 CONFIG_EPOLL=y
@@ -207,13 +206,13 @@ CONFIG_SHMEM=y
 CONFIG_IO_URING=y
 # CONFIG_ADVISE_SYSCALLS is not set
 CONFIG_MEMBARRIER=y
-CONFIG_KCMP=y
-# CONFIG_RSEQ is not set
-CONFIG_CACHESTAT_SYSCALL=y
-# CONFIG_PC104 is not set
 # CONFIG_KALLSYMS is not set
 CONFIG_ARCH_HAS_MEMBARRIER_SYNC_CORE=y
+CONFIG_KCMP=y
+# CONFIG_RSEQ is not set
+# CONFIG_EMBEDDED is not set
 CONFIG_HAVE_PERF_EVENTS=y
+# CONFIG_PC104 is not set
 
 #
 # Kernel Performance Events And Counters
@@ -223,16 +222,6 @@ CONFIG_PERF_EVENTS=y
 # end of Kernel Performance Events And Counters
 
 # CONFIG_PROFILING is not set
-
-#
-# Kexec and crash features
-#
-CONFIG_KEXEC_CORE=y
-CONFIG_KEXEC=y
-CONFIG_KEXEC_FILE=y
-# CONFIG_KEXEC_SIG is not set
-# CONFIG_CRASH_DUMP is not set
-# end of Kexec and crash features
 # end of General setup
 
 CONFIG_64BIT=y
@@ -254,6 +243,7 @@ CONFIG_ARCH_MAY_HAVE_PC_FDC=y
 CONFIG_GENERIC_CALIBRATE_DELAY=y
 CONFIG_ARCH_HAS_CPU_RELAX=y
 CONFIG_ARCH_HIBERNATION_POSSIBLE=y
+CONFIG_ARCH_NR_GPIO=1024
 CONFIG_ARCH_SUSPEND_POSSIBLE=y
 CONFIG_AUDIT_ARCH=y
 CONFIG_HAVE_INTEL_TXT=y
@@ -267,11 +257,11 @@ CONFIG_CC_HAS_SANE_STACKPROTECTOR=y
 # Processor type and features
 #
 CONFIG_SMP=y
+CONFIG_X86_FEATURE_NAMES=y
 CONFIG_X86_X2APIC=y
-# CONFIG_X86_POSTED_MSI is not set
 # CONFIG_X86_MPPARSE is not set
+# CONFIG_GOLDFISH is not set
 # CONFIG_X86_CPU_RESCTRL is not set
-# CONFIG_X86_FRED is not set
 # CONFIG_X86_EXTENDED_PLATFORM is not set
 # CONFIG_X86_INTEL_LPSS is not set
 # CONFIG_X86_AMD_PLATFORM_DEVICE is not set
@@ -290,7 +280,6 @@ CONFIG_X86_INTEL_USERCOPY=y
 CONFIG_X86_USE_PPRO_CHECKSUM=y
 CONFIG_X86_P6_NOP=y
 CONFIG_X86_TSC=y
-CONFIG_X86_HAVE_PAE=y
 CONFIG_X86_CMPXCHG64=y
 CONFIG_X86_CMOV=y
 CONFIG_X86_MINIMUM_CPU_FAMILY=64
@@ -317,7 +306,6 @@ CONFIG_SCHED_SMT=y
 CONFIG_SCHED_MC=y
 CONFIG_SCHED_MC_PRIO=y
 CONFIG_X86_LOCAL_APIC=y
-CONFIG_ACPI_MADT_WAKEUP=y
 CONFIG_X86_IO_APIC=y
 # CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS is not set
 CONFIG_X86_MCE=y
@@ -336,6 +324,7 @@ CONFIG_X86_MCE_THRESHOLD=y
 # CONFIG_X86_VSYSCALL_EMULATION is not set
 CONFIG_X86_IOPL_IOPERM=y
 CONFIG_MICROCODE=y
+CONFIG_MICROCODE_INTEL=y
 # CONFIG_MICROCODE_LATE_LOADING is not set
 # CONFIG_X86_MSR is not set
 # CONFIG_X86_CPUID is not set
@@ -356,25 +345,19 @@ CONFIG_CC_HAS_IBT=y
 CONFIG_X86_INTEL_TSX_MODE_OFF=y
 # CONFIG_X86_INTEL_TSX_MODE_ON is not set
 # CONFIG_X86_INTEL_TSX_MODE_AUTO is not set
-# CONFIG_X86_USER_SHADOW_STACK is not set
+# CONFIG_X86_SGX is not set
 CONFIG_EFI=y
 # CONFIG_EFI_STUB is not set
-CONFIG_EFI_RUNTIME_MAP=y
 # CONFIG_HZ_100 is not set
 CONFIG_HZ_250=y
 # CONFIG_HZ_300 is not set
 # CONFIG_HZ_1000 is not set
 CONFIG_HZ=250
-CONFIG_ARCH_SUPPORTS_KEXEC=y
-CONFIG_ARCH_SUPPORTS_KEXEC_FILE=y
-CONFIG_ARCH_SELECTS_KEXEC_FILE=y
-CONFIG_ARCH_SUPPORTS_KEXEC_PURGATORY=y
-CONFIG_ARCH_SUPPORTS_KEXEC_SIG=y
-CONFIG_ARCH_SUPPORTS_KEXEC_SIG_FORCE=y
-CONFIG_ARCH_SUPPORTS_KEXEC_BZIMAGE_VERIFY_SIG=y
-CONFIG_ARCH_SUPPORTS_KEXEC_JUMP=y
-CONFIG_ARCH_SUPPORTS_CRASH_DUMP=y
-CONFIG_ARCH_SUPPORTS_CRASH_HOTPLUG=y
+CONFIG_KEXEC=y
+CONFIG_KEXEC_FILE=y
+CONFIG_ARCH_HAS_KEXEC_PURGATORY=y
+# CONFIG_KEXEC_SIG is not set
+# CONFIG_CRASH_DUMP is not set
 CONFIG_PHYSICAL_START=0x1000000
 CONFIG_RELOCATABLE=y
 CONFIG_RANDOMIZE_BASE=y
@@ -384,6 +367,8 @@ CONFIG_DYNAMIC_MEMORY_LAYOUT=y
 CONFIG_RANDOMIZE_MEMORY=y
 CONFIG_RANDOMIZE_MEMORY_PHYSICAL_PADDING=0x0
 CONFIG_HOTPLUG_CPU=y
+# CONFIG_BOOTPARAM_HOTPLUG_CPU0 is not set
+# CONFIG_DEBUG_HOTPLUG_CPU0 is not set
 # CONFIG_LEGACY_VSYSCALL_XONLY is not set
 CONFIG_LEGACY_VSYSCALL_NONE=y
 # CONFIG_CMDLINE_BOOL is not set
@@ -392,27 +377,14 @@ CONFIG_LEGACY_VSYSCALL_NONE=y
 CONFIG_HAVE_LIVEPATCH=y
 # end of Processor type and features
 
-CONFIG_CC_HAS_NAMED_AS=y
-CONFIG_USE_X86_SEG_SUPPORT=y
 CONFIG_CC_HAS_RETURN_THUNK=y
-CONFIG_CC_HAS_ENTRY_PADDING=y
-CONFIG_FUNCTION_PADDING_CFI=11
-CONFIG_FUNCTION_PADDING_BYTES=16
-CONFIG_CALL_PADDING=y
-CONFIG_HAVE_CALL_THUNKS=y
-CONFIG_CALL_THUNKS=y
-CONFIG_PREFIX_SYMBOLS=y
-CONFIG_CPU_MITIGATIONS=y
-CONFIG_MITIGATION_PAGE_TABLE_ISOLATION=y
-CONFIG_MITIGATION_RETPOLINE=y
-CONFIG_MITIGATION_RETHUNK=y
-CONFIG_MITIGATION_CALL_DEPTH_TRACKING=y
-# CONFIG_CALL_THUNKS_DEBUG is not set
-CONFIG_MITIGATION_IBRS_ENTRY=y
-# CONFIG_MITIGATION_GDS_FORCE is not set
-CONFIG_MITIGATION_RFDS=y
-CONFIG_MITIGATION_SPECTRE_BHI=y
+CONFIG_SPECULATION_MITIGATIONS=y
+CONFIG_PAGE_TABLE_ISOLATION=y
+CONFIG_RETPOLINE=y
+CONFIG_RETHUNK=y
+CONFIG_CPU_IBRS_ENTRY=y
 CONFIG_ARCH_HAS_ADD_PAGES=y
+CONFIG_ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE=y
 
 #
 # Power management and ACPI options
@@ -425,7 +397,6 @@ CONFIG_ACPI=y
 CONFIG_ACPI_LEGACY_TABLES_LOOKUP=y
 CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC=y
 CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT=y
-CONFIG_ACPI_THERMAL_LIB=y
 # CONFIG_ACPI_DEBUGGER is not set
 CONFIG_ACPI_SPCR_TABLE=y
 # CONFIG_ACPI_FPDT is not set
@@ -464,7 +435,6 @@ CONFIG_HAVE_ACPI_APEI_NMI=y
 # CONFIG_ACPI_CONFIGFS is not set
 # CONFIG_ACPI_PFRUT is not set
 CONFIG_ACPI_PCC=y
-# CONFIG_ACPI_FFH is not set
 # CONFIG_PMIC_OPREGION is not set
 CONFIG_ACPI_PRMT=y
 CONFIG_X86_PM_TIMER=y
@@ -492,6 +462,7 @@ CONFIG_CPU_FREQ_GOV_SCHEDUTIL=y
 CONFIG_X86_INTEL_PSTATE=y
 # CONFIG_X86_PCC_CPUFREQ is not set
 # CONFIG_X86_AMD_PSTATE is not set
+# CONFIG_X86_AMD_PSTATE_UT is not set
 # CONFIG_X86_ACPI_CPUFREQ is not set
 # CONFIG_X86_SPEEDSTEP_CENTRINO is not set
 # CONFIG_X86_P4_CLOCKMOD is not set
@@ -530,26 +501,19 @@ CONFIG_ISA_DMA_API=y
 # CONFIG_X86_X32_ABI is not set
 # end of Binary Emulations
 
+CONFIG_HAVE_KVM=y
 # CONFIG_VIRTUALIZATION is not set
 CONFIG_AS_AVX512=y
 CONFIG_AS_SHA1_NI=y
 CONFIG_AS_SHA256_NI=y
 CONFIG_AS_TPAUSE=y
-CONFIG_AS_GFNI=y
-CONFIG_AS_VAES=y
-CONFIG_AS_VPCLMULQDQ=y
-CONFIG_AS_WRUSS=y
-CONFIG_ARCH_CONFIGURES_CPU_MITIGATIONS=y
 
 #
 # General architecture-dependent options
 #
+CONFIG_CRASH_CORE=y
+CONFIG_KEXEC_CORE=y
 CONFIG_HOTPLUG_SMT=y
-CONFIG_HOTPLUG_CORE_SYNC=y
-CONFIG_HOTPLUG_CORE_SYNC_DEAD=y
-CONFIG_HOTPLUG_CORE_SYNC_FULL=y
-CONFIG_HOTPLUG_SPLIT_STARTUP=y
-CONFIG_HOTPLUG_PARALLEL=y
 CONFIG_GENERIC_ENTRY=y
 # CONFIG_KPROBES is not set
 CONFIG_JUMP_LABEL=y
@@ -573,8 +537,6 @@ CONFIG_GENERIC_SMP_IDLE_THREAD=y
 CONFIG_ARCH_HAS_FORTIFY_SOURCE=y
 CONFIG_ARCH_HAS_SET_MEMORY=y
 CONFIG_ARCH_HAS_SET_DIRECT_MAP=y
-CONFIG_ARCH_HAS_CPU_FINALIZE_INIT=y
-CONFIG_ARCH_HAS_CPU_PASID=y
 CONFIG_HAVE_ARCH_THREAD_STRUCT_WHITELIST=y
 CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT=y
 CONFIG_ARCH_WANTS_NO_INSTR=y
@@ -593,9 +555,7 @@ CONFIG_HAVE_PERF_USER_STACK_DUMP=y
 CONFIG_HAVE_ARCH_JUMP_LABEL=y
 CONFIG_HAVE_ARCH_JUMP_LABEL_RELATIVE=y
 CONFIG_MMU_GATHER_MERGE_VMAS=y
-CONFIG_MMU_LAZY_TLB_REFCOUNT=y
 CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y
-CONFIG_ARCH_HAS_NMI_SAFE_THIS_CPU_OPS=y
 CONFIG_HAVE_ALIGNED_STRUCT_PAGE=y
 CONFIG_HAVE_CMPXCHG_LOCAL=y
 CONFIG_HAVE_CMPXCHG_DOUBLE=y
@@ -632,11 +592,8 @@ CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
 CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
 CONFIG_HAVE_EXIT_THREAD=y
 CONFIG_ARCH_MMAP_RND_BITS=28
-CONFIG_HAVE_PAGE_SIZE_4KB=y
-CONFIG_PAGE_SIZE_4KB=y
 CONFIG_PAGE_SIZE_LESS_THAN_64KB=y
 CONFIG_PAGE_SIZE_LESS_THAN_256KB=y
-CONFIG_PAGE_SHIFT=12
 CONFIG_HAVE_OBJTOOL=y
 CONFIG_HAVE_JUMP_LABEL_HACK=y
 CONFIG_HAVE_NOINSTR_HACK=y
@@ -667,9 +624,7 @@ CONFIG_ARCH_SUPPORTS_PAGE_TABLE_CHECK=y
 CONFIG_ARCH_HAS_ELFCORE_COMPAT=y
 CONFIG_ARCH_HAS_PARANOID_L1D_FLUSH=y
 CONFIG_DYNAMIC_SIGFRAME=y
-CONFIG_ARCH_HAS_HW_PTE_YOUNG=y
 CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG=y
-CONFIG_ARCH_HAS_KERNEL_FPU_SUPPORT=y
 
 #
 # GCOV-based kernel profiling
@@ -680,12 +635,10 @@ CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
 CONFIG_HAVE_GCC_PLUGINS=y
 CONFIG_GCC_PLUGINS=y
 # CONFIG_GCC_PLUGIN_LATENT_ENTROPY is not set
-CONFIG_FUNCTION_ALIGNMENT_4B=y
-CONFIG_FUNCTION_ALIGNMENT_16B=y
-CONFIG_FUNCTION_ALIGNMENT=16
 # end of General architecture-dependent options
 
 CONFIG_RT_MUTEXES=y
+CONFIG_BASE_SMALL=0
 CONFIG_MODULES=y
 # CONFIG_MODULE_FORCE_LOAD is not set
 # CONFIG_MODULE_UNLOAD is not set
@@ -706,9 +659,9 @@ CONFIG_BLOCK_LEGACY_AUTOLOAD=y
 CONFIG_BLK_DEV_BSG_COMMON=y
 CONFIG_BLK_DEV_BSGLIB=y
 # CONFIG_BLK_DEV_INTEGRITY is not set
-CONFIG_BLK_DEV_WRITE_MOUNTED=y
 # CONFIG_BLK_DEV_ZONED is not set
 # CONFIG_BLK_WBT is not set
+# CONFIG_BLK_SED_OPAL is not set
 # CONFIG_BLK_INLINE_ENCRYPTION is not set
 
 #
@@ -762,21 +715,19 @@ CONFIG_BINFMT_SCRIPT=y
 # Memory Management options
 #
 # CONFIG_SWAP is not set
-CONFIG_HAVE_ZSMALLOC=y
 
 #
-# Slab allocator options
+# SLAB allocator options
 #
+# CONFIG_SLAB is not set
 CONFIG_SLUB=y
-# CONFIG_SLUB_TINY is not set
+# CONFIG_SLOB is not set
 CONFIG_SLAB_MERGE_DEFAULT=y
 # CONFIG_SLAB_FREELIST_RANDOM is not set
 # CONFIG_SLAB_FREELIST_HARDENED is not set
-# CONFIG_SLAB_BUCKETS is not set
 # CONFIG_SLUB_STATS is not set
 CONFIG_SLUB_CPU_PARTIAL=y
-# CONFIG_RANDOM_KMALLOC_CACHES is not set
-# end of Slab allocator options
+# end of SLAB allocator options
 
 # CONFIG_SHUFFLE_PAGE_ALLOCATOR is not set
 # CONFIG_COMPAT_BRK is not set
@@ -784,17 +735,13 @@ CONFIG_SPARSEMEM=y
 CONFIG_SPARSEMEM_EXTREME=y
 CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
 CONFIG_SPARSEMEM_VMEMMAP=y
-CONFIG_ARCH_WANT_OPTIMIZE_DAX_VMEMMAP=y
-CONFIG_ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP=y
-CONFIG_HAVE_GUP_FAST=y
+CONFIG_HAVE_FAST_GUP=y
 CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
 # CONFIG_MEMORY_HOTPLUG is not set
-CONFIG_ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE=y
 CONFIG_SPLIT_PTLOCK_CPUS=4
 CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y
 # CONFIG_COMPACTION is not set
 # CONFIG_PAGE_REPORTING is not set
-CONFIG_PCP_BATCH_SCALE_MAX=5
 CONFIG_PHYS_ADDR_T_64BIT=y
 CONFIG_MMU_NOTIFIER=y
 # CONFIG_KSM is not set
@@ -823,17 +770,10 @@ CONFIG_ZONE_DMA32=y
 #
 # GUP_TEST needs to have DEBUG_FS enabled
 #
-# CONFIG_DMAPOOL_TEST is not set
 CONFIG_ARCH_HAS_PTE_SPECIAL=y
-# CONFIG_MEMFD_CREATE is not set
 CONFIG_SECRETMEM=y
 # CONFIG_USERFAULTFD is not set
 # CONFIG_LRU_GEN is not set
-CONFIG_ARCH_SUPPORTS_PER_VMA_LOCK=y
-CONFIG_PER_VMA_LOCK=y
-CONFIG_LOCK_MM_AND_FIND_VMA=y
-CONFIG_IOMMU_MM_DATA=y
-CONFIG_EXECMEM=y
 
 #
 # Data Access Monitoring
@@ -850,6 +790,7 @@ CONFIG_NET=y
 CONFIG_PACKET=y
 # CONFIG_PACKET_DIAG is not set
 CONFIG_UNIX=y
+CONFIG_UNIX_SCM=y
 CONFIG_AF_UNIX_OOB=y
 # CONFIG_UNIX_DIAG is not set
 # CONFIG_TLS is not set
@@ -872,13 +813,13 @@ CONFIG_INET_TABLE_PERTURB_ORDER=16
 # CONFIG_TCP_CONG_ADVANCED is not set
 CONFIG_TCP_CONG_CUBIC=y
 CONFIG_DEFAULT_TCP_CONG="cubic"
-# CONFIG_TCP_AO is not set
 # CONFIG_TCP_MD5SIG is not set
 # CONFIG_IPV6 is not set
 # CONFIG_MPTCP is not set
 # CONFIG_NETWORK_SECMARK is not set
 # CONFIG_NETWORK_PHY_TIMESTAMPING is not set
 # CONFIG_NETFILTER is not set
+# CONFIG_BPFILTER is not set
 # CONFIG_IP_DCCP is not set
 # CONFIG_IP_SCTP is not set
 # CONFIG_RDS is not set
@@ -908,7 +849,6 @@ CONFIG_DEFAULT_TCP_CONG="cubic"
 # CONFIG_QRTR is not set
 # CONFIG_NET_NCSI is not set
 CONFIG_PCPU_DEV_REFCNT=y
-CONFIG_MAX_SKB_FRAGS=17
 CONFIG_RPS=y
 CONFIG_RFS_ACCEL=y
 CONFIG_SOCK_RX_QUEUE_MAPPING=y
@@ -948,7 +888,6 @@ CONFIG_ETHTOOL_NETLINK=y
 CONFIG_HAVE_EISA=y
 # CONFIG_EISA is not set
 CONFIG_HAVE_PCI=y
-CONFIG_GENERIC_PCI_IOMAP=y
 CONFIG_PCI=y
 CONFIG_PCI_DOMAINS=y
 # CONFIG_PCIEPORTBUS is not set
@@ -959,6 +898,7 @@ CONFIG_PCIEASPM_DEFAULT=y
 # CONFIG_PCIEASPM_PERFORMANCE is not set
 # CONFIG_PCIE_PTM is not set
 CONFIG_PCI_MSI=y
+CONFIG_PCI_MSI_IRQ_DOMAIN=y
 CONFIG_PCI_QUIRKS=y
 # CONFIG_PCI_DEBUG is not set
 # CONFIG_PCI_STUB is not set
@@ -983,26 +923,21 @@ CONFIG_VGA_ARB_MAX_GPUS=16
 # CONFIG_VMD is not set
 
 #
-# Cadence-based PCIe controllers
+# DesignWare PCI Core Support
 #
-# end of Cadence-based PCIe controllers
-
-#
-# DesignWare-based PCIe controllers
-#
-# CONFIG_PCI_MESON is not set
 # CONFIG_PCIE_DW_PLAT_HOST is not set
-# end of DesignWare-based PCIe controllers
+# CONFIG_PCI_MESON is not set
+# end of DesignWare PCI Core Support
 
 #
-# Mobiveil-based PCIe controllers
+# Mobiveil PCIe Core Support
 #
-# end of Mobiveil-based PCIe controllers
+# end of Mobiveil PCIe Core Support
 
 #
-# PLDA-based PCIe controllers
+# Cadence PCIe controllers support
 #
-# end of PLDA-based PCIe controllers
+# end of Cadence PCIe controllers support
 # end of PCI controller drivers
 
 #
@@ -1046,14 +981,12 @@ CONFIG_EXTRA_FIRMWARE=""
 # CONFIG_DEBUG_DEVRES is not set
 # CONFIG_DEBUG_TEST_DRIVER_REMOVE is not set
 # CONFIG_TEST_ASYNC_DRIVER_PROBE is not set
-CONFIG_GENERIC_CPU_DEVICES=y
 CONFIG_GENERIC_CPU_AUTOPROBE=y
 CONFIG_GENERIC_CPU_VULNERABILITIES=y
 CONFIG_REGMAP=y
 CONFIG_REGMAP_MMIO=y
 CONFIG_DMA_SHARED_BUFFER=y
 # CONFIG_DMA_FENCE_TRACE is not set
-# CONFIG_FW_DEVLINK_SYNC_STATE_TIMEOUT is not set
 # end of Generic Driver Options
 
 #
@@ -1063,11 +996,6 @@ CONFIG_DMA_SHARED_BUFFER=y
 # CONFIG_MHI_BUS_EP is not set
 # end of Bus devices
 
-#
-# Cache Drivers
-#
-# end of Cache Drivers
-
 # CONFIG_CONNECTOR is not set
 
 #
@@ -1094,22 +1022,20 @@ CONFIG_SYSFB_SIMPLEFB=y
 # EFI (Extensible Firmware Interface) Support
 #
 CONFIG_EFI_ESRT=y
+CONFIG_EFI_RUNTIME_MAP=y
+# CONFIG_EFI_FAKE_MEMMAP is not set
 CONFIG_EFI_RUNTIME_WRAPPERS=y
 # CONFIG_EFI_BOOTLOADER_CONTROL is not set
 # CONFIG_EFI_CAPSULE_LOADER is not set
 # CONFIG_EFI_TEST is not set
 # CONFIG_EFI_RCI2_TABLE is not set
 # CONFIG_EFI_DISABLE_PCI_DMA is not set
+CONFIG_EFI_EARLYCON=y
 CONFIG_EFI_CUSTOM_SSDT_OVERLAYS=y
 # CONFIG_EFI_DISABLE_RUNTIME is not set
 # CONFIG_EFI_COCO_SECRET is not set
 # end of EFI (Extensible Firmware Interface) Support
 
-#
-# Qualcomm firmware drivers
-#
-# end of Qualcomm firmware drivers
-
 #
 # Tegra firmware driver
 #
@@ -1154,7 +1080,7 @@ CONFIG_BLK_DEV_NVME=y
 # CONFIG_NVME_VERBOSE_ERRORS is not set
 # CONFIG_NVME_FC is not set
 # CONFIG_NVME_TCP is not set
-# CONFIG_NVME_HOST_AUTH is not set
+# CONFIG_NVME_AUTH is not set
 # end of NVME Support
 
 #
@@ -1186,6 +1112,7 @@ CONFIG_BLK_DEV_NVME=y
 # EEPROM support
 #
 # CONFIG_EEPROM_AT24 is not set
+# CONFIG_EEPROM_LEGACY is not set
 # CONFIG_EEPROM_MAX6875 is not set
 # CONFIG_EEPROM_93CX6 is not set
 # CONFIG_EEPROM_IDT_89HPESX is not set
@@ -1202,6 +1129,8 @@ CONFIG_BLK_DEV_NVME=y
 # CONFIG_SENSORS_LIS3_I2C is not set
 # CONFIG_ALTERA_STAPL is not set
 # CONFIG_INTEL_MEI is not set
+# CONFIG_INTEL_MEI_ME is not set
+# CONFIG_INTEL_MEI_TXE is not set
 # CONFIG_VMWARE_VMCI is not set
 # CONFIG_GENWQE is not set
 # CONFIG_ECHO is not set
@@ -1209,9 +1138,9 @@ CONFIG_BLK_DEV_NVME=y
 # CONFIG_MISC_ALCOR_PCI is not set
 # CONFIG_MISC_RTSX_PCI is not set
 # CONFIG_MISC_RTSX_USB is not set
+# CONFIG_HABANA_AI is not set
 # CONFIG_UACCE is not set
 # CONFIG_PVPANIC is not set
-# CONFIG_KEBA_CP500 is not set
 # end of Misc devices
 
 #
@@ -1323,7 +1252,6 @@ CONFIG_SATA_MOBILE_LPM_POLICY=0
 # CONFIG_ATA_SFF is not set
 CONFIG_MD=y
 # CONFIG_BLK_DEV_MD is not set
-CONFIG_MD_BITMAP_FILE=y
 # CONFIG_BCACHE is not set
 CONFIG_BLK_DEV_DM_BUILTIN=y
 CONFIG_BLK_DEV_DM=y
@@ -1356,7 +1284,6 @@ CONFIG_DM_VERITY_FEC=y
 # CONFIG_DM_SWITCH is not set
 # CONFIG_DM_LOG_WRITES is not set
 # CONFIG_DM_INTEGRITY is not set
-# CONFIG_DM_VDO is not set
 # CONFIG_TARGET_CORE is not set
 # CONFIG_FUSION is not set
 
@@ -1383,7 +1310,6 @@ CONFIG_NET_CORE=y
 # CONFIG_GENEVE is not set
 # CONFIG_BAREUDP is not set
 # CONFIG_GTP is not set
-# CONFIG_PFCP is not set
 # CONFIG_MACSEC is not set
 # CONFIG_NETCONSOLE is not set
 # CONFIG_TUN is not set
@@ -1429,6 +1355,7 @@ CONFIG_E1000E=m
 CONFIG_E1000E_HWTS=y
 # CONFIG_IGB is not set
 # CONFIG_IGBVF is not set
+# CONFIG_IXGB is not set
 # CONFIG_IXGBE is not set
 # CONFIG_IXGBEVF is not set
 # CONFIG_I40E is not set
@@ -1436,12 +1363,11 @@ CONFIG_E1000E_HWTS=y
 # CONFIG_ICE is not set
 # CONFIG_FM10K is not set
 # CONFIG_IGC is not set
-# CONFIG_IDPF is not set
+# CONFIG_NET_VENDOR_WANGXUN is not set
 # CONFIG_JME is not set
 # CONFIG_NET_VENDOR_LITEX is not set
 # CONFIG_NET_VENDOR_MARVELL is not set
 # CONFIG_NET_VENDOR_MELLANOX is not set
-# CONFIG_NET_VENDOR_META is not set
 # CONFIG_NET_VENDOR_MICREL is not set
 # CONFIG_NET_VENDOR_MICROCHIP is not set
 # CONFIG_NET_VENDOR_MICROSEMI is not set
@@ -1478,18 +1404,18 @@ CONFIG_E1000E_HWTS=y
 # CONFIG_NET_VENDOR_TI is not set
 # CONFIG_NET_VENDOR_VERTEXCOM is not set
 # CONFIG_NET_VENDOR_VIA is not set
-# CONFIG_NET_VENDOR_WANGXUN is not set
 # CONFIG_NET_VENDOR_WIZNET is not set
 # CONFIG_NET_VENDOR_XILINX is not set
 # CONFIG_FDDI is not set
 # CONFIG_HIPPI is not set
+# CONFIG_NET_SB1000 is not set
 # CONFIG_PHYLIB is not set
+# CONFIG_PSE_CONTROLLER is not set
 # CONFIG_MDIO_DEVICE is not set
 
 #
 # PCS device drivers
 #
-# CONFIG_PCS_XPCS is not set
 # end of PCS device drivers
 
 # CONFIG_PPP is not set
@@ -1626,30 +1552,31 @@ CONFIG_TTY=y
 CONFIG_VT=y
 CONFIG_CONSOLE_TRANSLATIONS=y
 CONFIG_VT_CONSOLE=y
+CONFIG_HW_CONSOLE=y
 CONFIG_VT_HW_CONSOLE_BINDING=y
 CONFIG_UNIX98_PTYS=y
 # CONFIG_LEGACY_PTYS is not set
-# CONFIG_LEGACY_TIOCSTI is not set
 CONFIG_LDISC_AUTOLOAD=y
 
 #
 # Serial drivers
 #
+CONFIG_SERIAL_EARLYCON=y
 CONFIG_SERIAL_8250=y
 # CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
 CONFIG_SERIAL_8250_PNP=y
 # CONFIG_SERIAL_8250_16550A_VARIANTS is not set
 # CONFIG_SERIAL_8250_FINTEK is not set
 CONFIG_SERIAL_8250_CONSOLE=y
-CONFIG_SERIAL_8250_PCILIB=y
 CONFIG_SERIAL_8250_PCI=y
 CONFIG_SERIAL_8250_EXAR=y
 CONFIG_SERIAL_8250_NR_UARTS=32
 CONFIG_SERIAL_8250_RUNTIME_UARTS=32
 CONFIG_SERIAL_8250_EXTENDED=y
 CONFIG_SERIAL_8250_MANY_PORTS=y
-CONFIG_SERIAL_8250_PCI1XXXX=y
 CONFIG_SERIAL_8250_SHARE_IRQ=y
+# CONFIG_SERIAL_8250_DETECT_IRQ is not set
+# CONFIG_SERIAL_8250_RSA is not set
 CONFIG_SERIAL_8250_DWLIB=y
 CONFIG_SERIAL_8250_DW=y
 # CONFIG_SERIAL_8250_RT288X is not set
@@ -1662,6 +1589,7 @@ CONFIG_SERIAL_8250_LPSS=y
 #
 # CONFIG_SERIAL_UARTLITE is not set
 CONFIG_SERIAL_CORE=y
+CONFIG_SERIAL_CORE_CONSOLE=y
 # CONFIG_SERIAL_JSM is not set
 # CONFIG_SERIAL_LANTIQ is not set
 # CONFIG_SERIAL_SCCNXP is not set
@@ -1684,7 +1612,6 @@ CONFIG_TTY_PRINTK=y
 CONFIG_TTY_PRINTK_LEVEL=6
 # CONFIG_VIRTIO_CONSOLE is not set
 # CONFIG_IPMI_HANDLER is not set
-# CONFIG_SSIF_IPMI_BMC is not set
 # CONFIG_IPMB_DEVICE_INTERFACE is not set
 CONFIG_HW_RANDOM=y
 # CONFIG_HW_RANDOM_TIMERIOMEM is not set
@@ -1701,7 +1628,6 @@ CONFIG_DEVPORT=y
 # CONFIG_HPET is not set
 # CONFIG_HANGCHECK_TIMER is not set
 CONFIG_TCG_TPM=y
-CONFIG_TCG_TPM2_HMAC=y
 # CONFIG_HW_RANDOM_TPM is not set
 CONFIG_TCG_TIS_CORE=y
 CONFIG_TCG_TIS=y
@@ -1719,6 +1645,8 @@ CONFIG_TCG_TIS=y
 # CONFIG_TELCLOCK is not set
 # CONFIG_XILLYBUS is not set
 # CONFIG_XILLYUSB is not set
+CONFIG_RANDOM_TRUST_CPU=y
+CONFIG_RANDOM_TRUST_BOOTLOADER=y
 # end of Character devices
 
 #
@@ -1775,7 +1703,6 @@ CONFIG_I2C_ALGOBIT=y
 # CONFIG_I2C_SIS96X is not set
 # CONFIG_I2C_VIA is not set
 # CONFIG_I2C_VIAPRO is not set
-# CONFIG_I2C_ZHAOXIN is not set
 
 #
 # ACPI drivers
@@ -1840,9 +1767,9 @@ CONFIG_PTP_1588_CLOCK_OPTIONAL=y
 # CONFIG_GPIOLIB is not set
 # CONFIG_W1 is not set
 # CONFIG_POWER_RESET is not set
-# CONFIG_POWER_SEQUENCING is not set
 CONFIG_POWER_SUPPLY=y
 # CONFIG_POWER_SUPPLY_DEBUG is not set
+# CONFIG_PDA_POWER is not set
 # CONFIG_IP5XXX_POWER is not set
 # CONFIG_TEST_POWER is not set
 # CONFIG_CHARGER_ADP5061 is not set
@@ -1854,8 +1781,8 @@ CONFIG_POWER_SUPPLY=y
 # CONFIG_BATTERY_SBS is not set
 # CONFIG_CHARGER_SBS is not set
 # CONFIG_BATTERY_BQ27XXX is not set
+# CONFIG_BATTERY_MAX17040 is not set
 # CONFIG_BATTERY_MAX17042 is not set
-# CONFIG_BATTERY_MAX1720X is not set
 # CONFIG_CHARGER_MAX8903 is not set
 # CONFIG_CHARGER_LP8727 is not set
 # CONFIG_CHARGER_LTC4162L is not set
@@ -1866,12 +1793,12 @@ CONFIG_POWER_SUPPLY=y
 # CONFIG_BATTERY_RT5033 is not set
 # CONFIG_CHARGER_BD99954 is not set
 # CONFIG_BATTERY_UG3105 is not set
-# CONFIG_FUEL_GAUGE_MM8013 is not set
 # CONFIG_HWMON is not set
 CONFIG_THERMAL=y
 # CONFIG_THERMAL_NETLINK is not set
 # CONFIG_THERMAL_STATISTICS is not set
 CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS=0
+# CONFIG_THERMAL_WRITABLE_TRIPS is not set
 CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
 # CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE is not set
 # CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE is not set
@@ -1897,6 +1824,7 @@ CONFIG_X86_THERMAL_VECTOR=y
 
 # CONFIG_INTEL_PCH_THERMAL is not set
 # CONFIG_INTEL_TCC_COOLING is not set
+# CONFIG_INTEL_MENLOW is not set
 # CONFIG_INTEL_HFI_THERMAL is not set
 # end of Intel thermal drivers
 
@@ -1910,12 +1838,10 @@ CONFIG_BCMA_POSSIBLE=y
 # Multifunction device drivers
 #
 # CONFIG_MFD_AS3711 is not set
-# CONFIG_MFD_SMPRO is not set
 # CONFIG_PMIC_ADP5520 is not set
 # CONFIG_MFD_BCM590XX is not set
 # CONFIG_MFD_BD9571MWV is not set
 # CONFIG_MFD_AXP20X_I2C is not set
-# CONFIG_MFD_CS42L43_I2C is not set
 # CONFIG_MFD_MADERA is not set
 # CONFIG_PMIC_DA903X is not set
 # CONFIG_MFD_DA9052_I2C is not set
@@ -1926,6 +1852,7 @@ CONFIG_BCMA_POSSIBLE=y
 # CONFIG_MFD_DLN2 is not set
 # CONFIG_MFD_MC13XXX_I2C is not set
 # CONFIG_MFD_MP2629 is not set
+# CONFIG_HTC_PASIC3 is not set
 # CONFIG_MFD_INTEL_QUARK_I2C_GPIO is not set
 # CONFIG_LPC_ICH is not set
 # CONFIG_LPC_SCH is not set
@@ -1939,7 +1866,6 @@ CONFIG_BCMA_POSSIBLE=y
 # CONFIG_MFD_88PM805 is not set
 # CONFIG_MFD_88PM860X is not set
 # CONFIG_MFD_MAX14577 is not set
-# CONFIG_MFD_MAX77541 is not set
 # CONFIG_MFD_MAX77693 is not set
 # CONFIG_MFD_MAX77843 is not set
 # CONFIG_MFD_MAX8907 is not set
@@ -1963,6 +1889,7 @@ CONFIG_BCMA_POSSIBLE=y
 # CONFIG_MFD_SM501 is not set
 # CONFIG_MFD_SKY81452 is not set
 CONFIG_MFD_SYSCON=y
+# CONFIG_MFD_TI_AM335X_TSCADC is not set
 # CONFIG_MFD_LP3943 is not set
 # CONFIG_MFD_LP8788 is not set
 # CONFIG_MFD_TI_LMU is not set
@@ -1974,7 +1901,6 @@ CONFIG_MFD_SYSCON=y
 # CONFIG_MFD_TI_LP873X is not set
 # CONFIG_MFD_TPS6586X is not set
 # CONFIG_MFD_TPS65912_I2C is not set
-# CONFIG_MFD_TPS6594_I2C is not set
 # CONFIG_TWL4030_CORE is not set
 # CONFIG_TWL6040_CORE is not set
 # CONFIG_MFD_WL1273_CORE is not set
@@ -1987,7 +1913,6 @@ CONFIG_MFD_SYSCON=y
 # CONFIG_MFD_WM8350_I2C is not set
 # CONFIG_MFD_WM8994 is not set
 # CONFIG_MFD_ATC260X_I2C is not set
-# CONFIG_MFD_CS40L50_I2C is not set
 # end of Multifunction device drivers
 
 # CONFIG_REGULATOR is not set
@@ -2005,18 +1930,35 @@ CONFIG_MFD_SYSCON=y
 # Graphics support
 #
 CONFIG_APERTURE_HELPERS=y
-CONFIG_SCREEN_INFO=y
-CONFIG_VIDEO=y
-# CONFIG_AUXDISPLAY is not set
 # CONFIG_AGP is not set
 # CONFIG_VGA_SWITCHEROO is not set
 # CONFIG_DRM is not set
+# CONFIG_DRM_DEBUG_MODESET_LOCK is not set
+
+#
+# ARM devices
+#
+# end of ARM devices
+
 CONFIG_DRM_PANEL_ORIENTATION_QUIRKS=y
 
 #
 # Frame buffer Devices
 #
+CONFIG_FB_CMDLINE=y
+CONFIG_FB_NOTIFY=y
 CONFIG_FB=y
+# CONFIG_FIRMWARE_EDID is not set
+CONFIG_FB_CFB_FILLRECT=y
+CONFIG_FB_CFB_COPYAREA=y
+CONFIG_FB_CFB_IMAGEBLIT=y
+# CONFIG_FB_FOREIGN_ENDIAN is not set
+# CONFIG_FB_MODE_HELPERS is not set
+# CONFIG_FB_TILEBLITTING is not set
+
+#
+# Frame buffer hardware drivers
+#
 # CONFIG_FB_CIRRUS is not set
 # CONFIG_FB_PM2 is not set
 # CONFIG_FB_CYBER2000 is not set
@@ -2033,6 +1975,7 @@ CONFIG_FB_EFI=y
 # CONFIG_FB_NVIDIA is not set
 # CONFIG_FB_RIVA is not set
 # CONFIG_FB_I740 is not set
+# CONFIG_FB_LE80578 is not set
 # CONFIG_FB_MATROX is not set
 # CONFIG_FB_RADEON is not set
 # CONFIG_FB_ATY128 is not set
@@ -2057,18 +2000,6 @@ CONFIG_FB_EFI=y
 # CONFIG_FB_MB862XX is not set
 # CONFIG_FB_SIMPLE is not set
 # CONFIG_FB_SM712 is not set
-CONFIG_FB_CORE=y
-CONFIG_FB_NOTIFY=y
-# CONFIG_FIRMWARE_EDID is not set
-CONFIG_FB_DEVICE=y
-CONFIG_FB_CFB_FILLRECT=y
-CONFIG_FB_CFB_COPYAREA=y
-CONFIG_FB_CFB_IMAGEBLIT=y
-# CONFIG_FB_FOREIGN_ENDIAN is not set
-CONFIG_FB_IOMEM_FOPS=y
-CONFIG_FB_IOMEM_HELPERS=y
-# CONFIG_FB_MODE_HELPERS is not set
-# CONFIG_FB_TILEBLITTING is not set
 # end of Frame buffer Devices
 
 #
@@ -2076,14 +2007,11 @@ CONFIG_FB_IOMEM_HELPERS=y
 #
 # CONFIG_LCD_CLASS_DEVICE is not set
 CONFIG_BACKLIGHT_CLASS_DEVICE=y
-# CONFIG_BACKLIGHT_KTD2801 is not set
-# CONFIG_BACKLIGHT_KTZ8866 is not set
 # CONFIG_BACKLIGHT_APPLE is not set
 # CONFIG_BACKLIGHT_QCOM_WLED is not set
 # CONFIG_BACKLIGHT_SAHARA is not set
 # CONFIG_BACKLIGHT_ADP8860 is not set
 # CONFIG_BACKLIGHT_ADP8870 is not set
-# CONFIG_BACKLIGHT_LM3509 is not set
 # CONFIG_BACKLIGHT_LM3639 is not set
 # CONFIG_BACKLIGHT_LV5207LP is not set
 # CONFIG_BACKLIGHT_BD6107 is not set
@@ -2108,7 +2036,10 @@ CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
 # end of Graphics support
 
 # CONFIG_SOUND is not set
-CONFIG_HID_SUPPORT=y
+
+#
+# HID support
+#
 CONFIG_HID=y
 # CONFIG_HID_BATTERY_STRENGTH is not set
 # CONFIG_HIDRAW is not set
@@ -2136,13 +2067,11 @@ CONFIG_HID_GENERIC=y
 # CONFIG_HID_EMS_FF is not set
 # CONFIG_HID_ELECOM is not set
 # CONFIG_HID_ELO is not set
-# CONFIG_HID_EVISION is not set
 # CONFIG_HID_EZKEY is not set
 # CONFIG_HID_GEMBIRD is not set
 # CONFIG_HID_GFRM is not set
 # CONFIG_HID_GLORIOUS is not set
 # CONFIG_HID_HOLTEK is not set
-# CONFIG_HID_GOOGLE_STADIA_FF is not set
 # CONFIG_HID_VIVALDI is not set
 # CONFIG_HID_KEYTOUCH is not set
 # CONFIG_HID_KYE is not set
@@ -2203,14 +2132,8 @@ CONFIG_HID_GENERIC=y
 # CONFIG_HID_ZYDACRON is not set
 # CONFIG_HID_SENSOR_HUB is not set
 # CONFIG_HID_ALPS is not set
-# CONFIG_HID_MCP2221 is not set
 # end of Special HID drivers
 
-#
-# HID-BPF support
-#
-# end of HID-BPF support
-
 #
 # USB HID support
 #
@@ -2226,9 +2149,11 @@ CONFIG_USB_HID=m
 # end of USB HID Boot Protocol drivers
 # end of USB HID support
 
-CONFIG_I2C_HID=y
+#
+# I2C HID support
+#
 # CONFIG_I2C_HID_ACPI is not set
-# CONFIG_I2C_HID_OF is not set
+# end of I2C HID support
 
 #
 # Intel ISH HID support
@@ -2241,6 +2166,7 @@ CONFIG_I2C_HID=y
 #
 # CONFIG_AMD_SFH_HID is not set
 # end of AMD SFH HID Support
+# end of HID support
 
 CONFIG_USB_OHCI_LITTLE_ENDIAN=y
 CONFIG_USB_SUPPORT=y
@@ -2249,7 +2175,6 @@ CONFIG_USB_COMMON=y
 CONFIG_USB_ARCH_HAS_HCD=y
 CONFIG_USB=y
 CONFIG_USB_PCI=y
-CONFIG_USB_PCI_AMD=y
 # CONFIG_USB_ANNOUNCE_NEW_DEVICES is not set
 
 #
@@ -2261,7 +2186,6 @@ CONFIG_USB_DEFAULT_PERSIST=y
 # CONFIG_USB_OTG_PRODUCTLIST is not set
 # CONFIG_USB_OTG_DISABLE_EXTERNAL_HUB is not set
 CONFIG_USB_AUTOSUSPEND_DELAY=2
-CONFIG_USB_DEFAULT_AUTHORIZATION_MODE=1
 # CONFIG_USB_MON is not set
 
 #
@@ -2281,6 +2205,7 @@ CONFIG_USB_EHCI_PCI=m
 CONFIG_USB_EHCI_HCD_PLATFORM=m
 # CONFIG_USB_OXU210HP_HCD is not set
 # CONFIG_USB_ISP116X_HCD is not set
+# CONFIG_USB_FOTG210_HCD is not set
 # CONFIG_USB_OHCI_HCD is not set
 # CONFIG_USB_UHCI_HCD is not set
 # CONFIG_USB_SL811_HCD is not set
@@ -2325,10 +2250,6 @@ CONFIG_USB_STORAGE=m
 # CONFIG_USB_MDC800 is not set
 # CONFIG_USB_MICROTEK is not set
 # CONFIG_USBIP_CORE is not set
-
-#
-# USB dual-mode controller drivers
-#
 # CONFIG_USB_CDNS_SUPPORT is not set
 # CONFIG_USB_MUSB_HDRC is not set
 # CONFIG_USB_DWC3 is not set
@@ -2353,9 +2274,9 @@ CONFIG_USB_STORAGE=m
 # CONFIG_USB_CYPRESS_CY7C63 is not set
 # CONFIG_USB_CYTHERM is not set
 # CONFIG_USB_IDMOUSE is not set
+# CONFIG_USB_FTDI_ELAN is not set
 # CONFIG_USB_APPLEDISPLAY is not set
 # CONFIG_APPLE_MFI_FASTCHARGE is not set
-# CONFIG_USB_LJCA is not set
 # CONFIG_USB_SISUSBVGA is not set
 # CONFIG_USB_LD is not set
 # CONFIG_USB_TRANCEVIBRATOR is not set
@@ -2418,7 +2339,6 @@ CONFIG_RTC_INTF_DEV=y
 # CONFIG_RTC_DRV_DS1374 is not set
 # CONFIG_RTC_DRV_DS1672 is not set
 # CONFIG_RTC_DRV_MAX6900 is not set
-# CONFIG_RTC_DRV_MAX31335 is not set
 # CONFIG_RTC_DRV_RS5C372 is not set
 # CONFIG_RTC_DRV_ISL1208 is not set
 # CONFIG_RTC_DRV_ISL12022 is not set
@@ -2433,7 +2353,6 @@ CONFIG_RTC_INTF_DEV=y
 # CONFIG_RTC_DRV_S35390A is not set
 # CONFIG_RTC_DRV_FM3130 is not set
 # CONFIG_RTC_DRV_RX8010 is not set
-# CONFIG_RTC_DRV_RX8111 is not set
 # CONFIG_RTC_DRV_RX8581 is not set
 # CONFIG_RTC_DRV_RX8025 is not set
 # CONFIG_RTC_DRV_EM3027 is not set
@@ -2470,7 +2389,9 @@ CONFIG_RTC_DRV_CMOS=y
 # CONFIG_RTC_DRV_M48T35 is not set
 # CONFIG_RTC_DRV_M48T59 is not set
 # CONFIG_RTC_DRV_MSM6242 is not set
+# CONFIG_RTC_DRV_BQ4802 is not set
 # CONFIG_RTC_DRV_RP5C01 is not set
+# CONFIG_RTC_DRV_V3020 is not set
 
 #
 # on-CPU RTC drivers
@@ -2494,6 +2415,7 @@ CONFIG_SYNC_FILE=y
 # CONFIG_DMABUF_SYSFS_STATS is not set
 # end of DMABUF options
 
+# CONFIG_AUXDISPLAY is not set
 # CONFIG_UIO is not set
 # CONFIG_VFIO is not set
 # CONFIG_VIRT_DRIVERS is not set
@@ -2509,16 +2431,15 @@ CONFIG_SYNC_FILE=y
 # CONFIG_GREYBUS is not set
 # CONFIG_COMEDI is not set
 # CONFIG_STAGING is not set
-# CONFIG_GOLDFISH is not set
 # CONFIG_CHROME_PLATFORMS is not set
-# CONFIG_CZNIC_PLATFORMS is not set
 # CONFIG_MELLANOX_PLATFORM is not set
 # CONFIG_SURFACE_PLATFORMS is not set
 CONFIG_X86_PLATFORM_DEVICES=y
 # CONFIG_ACPI_WMI is not set
 # CONFIG_ACERHDF is not set
 # CONFIG_ACER_WIRELESS is not set
-# CONFIG_AMD_WBRF is not set
+# CONFIG_AMD_PMF is not set
+# CONFIG_AMD_PMC is not set
 # CONFIG_ADV_SWBUTTON is not set
 # CONFIG_APPLE_GMUX is not set
 # CONFIG_ASUS_LAPTOP is not set
@@ -2527,12 +2448,12 @@ CONFIG_X86_PLATFORM_DEVICES=y
 # CONFIG_FUJITSU_LAPTOP is not set
 # CONFIG_FUJITSU_TABLET is not set
 # CONFIG_GPD_POCKET_FAN is not set
-# CONFIG_X86_PLATFORM_DRIVERS_HP is not set
+# CONFIG_HP_ACCEL is not set
 # CONFIG_WIRELESS_HOTKEY is not set
 # CONFIG_IBM_RTL is not set
 # CONFIG_SENSORS_HDAPS is not set
-# CONFIG_INTEL_IFS is not set
 # CONFIG_INTEL_SAR_INT1092 is not set
+# CONFIG_INTEL_PMC_CORE is not set
 
 #
 # Intel Speed Select Technology interface support
@@ -2553,8 +2474,6 @@ CONFIG_X86_PLATFORM_DEVICES=y
 # CONFIG_INTEL_SMARTCONNECT is not set
 # CONFIG_INTEL_TURBO_MAX_3 is not set
 # CONFIG_INTEL_VSEC is not set
-# CONFIG_ACPI_QUICKSTART is not set
-# CONFIG_MSI_EC is not set
 # CONFIG_SAMSUNG_LAPTOP is not set
 # CONFIG_SAMSUNG_Q10 is not set
 # CONFIG_TOSHIBA_BT_RFKILL is not set
@@ -2568,6 +2487,7 @@ CONFIG_X86_PLATFORM_DEVICES=y
 # CONFIG_INTEL_SCU_PLATFORM is not set
 # CONFIG_SIEMENS_SIMATIC_IPC is not set
 # CONFIG_WINMATE_FM07_KEYS is not set
+# CONFIG_P2SB is not set
 CONFIG_HAVE_CLK=y
 CONFIG_HAVE_CLK_PREPARE=y
 CONFIG_COMMON_CLK=y
@@ -2592,6 +2512,7 @@ CONFIG_MAILBOX=y
 CONFIG_PCC=y
 # CONFIG_ALTERA_MBOX is not set
 CONFIG_IOMMU_IOVA=y
+CONFIG_IOASID=y
 CONFIG_IOMMU_API=y
 CONFIG_IOMMU_SUPPORT=y
 
@@ -2605,7 +2526,6 @@ CONFIG_IOMMU_DEFAULT_DMA_LAZY=y
 # CONFIG_IOMMU_DEFAULT_PASSTHROUGH is not set
 CONFIG_IOMMU_DMA=y
 CONFIG_IOMMU_SVA=y
-CONFIG_IOMMU_IOPF=y
 # CONFIG_AMD_IOMMU is not set
 CONFIG_DMAR_TABLE=y
 CONFIG_INTEL_IOMMU=y
@@ -2613,8 +2533,6 @@ CONFIG_INTEL_IOMMU_SVM=y
 CONFIG_INTEL_IOMMU_DEFAULT_ON=y
 CONFIG_INTEL_IOMMU_FLOPPY_WA=y
 # CONFIG_INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON is not set
-CONFIG_INTEL_IOMMU_PERF_EVENTS=y
-# CONFIG_IOMMUFD is not set
 CONFIG_IRQ_REMAP=y
 
 #
@@ -2666,8 +2584,6 @@ CONFIG_IRQ_REMAP=y
 #
 # end of Enable LiteX SoC Builder specific drivers
 
-# CONFIG_WPCM450_SOC is not set
-
 #
 # Qualcomm SoC drivers
 #
@@ -2681,31 +2597,6 @@ CONFIG_IRQ_REMAP=y
 # end of Xilinx SoC drivers
 # end of SOC (System On Chip) specific Drivers
 
-#
-# PM Domains
-#
-
-#
-# Amlogic PM Domains
-#
-# end of Amlogic PM Domains
-
-#
-# Broadcom PM Domains
-#
-# end of Broadcom PM Domains
-
-#
-# i.MX PM Domains
-#
-# end of i.MX PM Domains
-
-#
-# Qualcomm PM Domains
-#
-# end of Qualcomm PM Domains
-# end of PM Domains
-
 # CONFIG_PM_DEVFREQ is not set
 # CONFIG_EXTCON is not set
 # CONFIG_MEMORY is not set
@@ -2716,7 +2607,6 @@ CONFIG_IRQ_REMAP=y
 #
 # IRQ chip support
 #
-# CONFIG_LAN966X_OIC is not set
 # end of IRQ chip support
 
 # CONFIG_IPACK_BUS is not set
@@ -2746,7 +2636,6 @@ CONFIG_GENERIC_PHY=y
 #
 # Performance monitor support
 #
-# CONFIG_DWC_PCIE_PMU is not set
 # end of Performance monitor support
 
 # CONFIG_RAS is not set
@@ -2764,7 +2653,6 @@ CONFIG_LIBNVDIMM=y
 # CONFIG_DAX is not set
 CONFIG_NVMEM=y
 # CONFIG_NVMEM_SYSFS is not set
-# CONFIG_NVMEM_LAYOUTS is not set
 # CONFIG_NVMEM_RMEM is not set
 
 #
@@ -2789,8 +2677,6 @@ CONFIG_NVMEM=y
 CONFIG_DCACHE_WORD_ACCESS=y
 # CONFIG_VALIDATE_FS_PARSER is not set
 CONFIG_FS_IOMAP=y
-CONFIG_BUFFER_HEAD=y
-CONFIG_LEGACY_DIRECT_IO=y
 # CONFIG_EXT2_FS is not set
 # CONFIG_EXT3_FS is not set
 CONFIG_EXT4_FS=y
@@ -2808,7 +2694,6 @@ CONFIG_FS_MBCACHE=y
 # CONFIG_BTRFS_FS is not set
 # CONFIG_NILFS2_FS is not set
 # CONFIG_F2FS_FS is not set
-# CONFIG_BCACHEFS_FS is not set
 # CONFIG_EXPORTFS_BLOCK_OPS is not set
 CONFIG_FILE_LOCKING=y
 # CONFIG_FS_ENCRYPTION is not set
@@ -2817,6 +2702,7 @@ CONFIG_FILE_LOCKING=y
 # CONFIG_INOTIFY_USER is not set
 # CONFIG_FANOTIFY is not set
 # CONFIG_QUOTA is not set
+# CONFIG_AUTOFS4_FS is not set
 # CONFIG_AUTOFS_FS is not set
 # CONFIG_FUSE_FS is not set
 # CONFIG_OVERLAY_FS is not set
@@ -2824,6 +2710,7 @@ CONFIG_FILE_LOCKING=y
 #
 # Caches
 #
+# CONFIG_FSCACHE is not set
 # end of Caches
 
 #
@@ -2846,8 +2733,8 @@ CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
 # CONFIG_FAT_DEFAULT_UTF8 is not set
 CONFIG_EXFAT_FS=y
 CONFIG_EXFAT_DEFAULT_IOCHARSET="utf8"
-# CONFIG_NTFS3_FS is not set
 # CONFIG_NTFS_FS is not set
+# CONFIG_NTFS3_FS is not set
 # end of DOS/FAT/EXFAT/NT Filesystems
 
 #
@@ -2863,6 +2750,7 @@ CONFIG_KERNFS=y
 CONFIG_SYSFS=y
 # CONFIG_TMPFS is not set
 # CONFIG_HUGETLBFS is not set
+CONFIG_ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP=y
 CONFIG_ARCH_HAS_GIGANTIC_PAGE=y
 # CONFIG_CONFIGFS_FS is not set
 # CONFIG_EFIVAR_FS is not set
@@ -2934,11 +2822,9 @@ CONFIG_IO_WQ=y
 #
 # CONFIG_KEYS is not set
 # CONFIG_SECURITY_DMESG_RESTRICT is not set
-CONFIG_PROC_MEM_ALWAYS_FORCE=y
-# CONFIG_PROC_MEM_FORCE_PTRACE is not set
-# CONFIG_PROC_MEM_NO_FORCE is not set
 CONFIG_SECURITYFS=y
 # CONFIG_INTEL_TXT is not set
+CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=y
 CONFIG_HARDENED_USERCOPY=y
 # CONFIG_FORTIFY_SOURCE is not set
 # CONFIG_STATIC_USERMODEHELPER is not set
@@ -2962,13 +2848,6 @@ CONFIG_INIT_STACK_NONE=y
 # CONFIG_INIT_ON_FREE_DEFAULT_ON is not set
 # end of Memory initialization
 
-#
-# Hardening of kernel data structures
-#
-# CONFIG_LIST_HARDENED is not set
-# CONFIG_BUG_ON_DATA_CORRUPTION is not set
-# end of Hardening of kernel data structures
-
 CONFIG_RANDSTRUCT_NONE=y
 # CONFIG_RANDSTRUCT_FULL is not set
 # CONFIG_RANDSTRUCT_PERFORMANCE is not set
@@ -2984,7 +2863,6 @@ CONFIG_CRYPTO_ALGAPI=y
 CONFIG_CRYPTO_ALGAPI2=y
 CONFIG_CRYPTO_AEAD=y
 CONFIG_CRYPTO_AEAD2=y
-CONFIG_CRYPTO_SIG2=y
 CONFIG_CRYPTO_SKCIPHER=y
 CONFIG_CRYPTO_SKCIPHER2=y
 CONFIG_CRYPTO_HASH=y
@@ -3018,6 +2896,7 @@ CONFIG_CRYPTO_ECC=y
 CONFIG_CRYPTO_ECDH=y
 # CONFIG_CRYPTO_ECDSA is not set
 # CONFIG_CRYPTO_ECRDSA is not set
+# CONFIG_CRYPTO_SM2 is not set
 # CONFIG_CRYPTO_CURVE25519 is not set
 # end of Public-key cryptography
 
@@ -3044,12 +2923,14 @@ CONFIG_CRYPTO_AES=y
 # CONFIG_CRYPTO_ADIANTUM is not set
 # CONFIG_CRYPTO_CHACHA20 is not set
 CONFIG_CRYPTO_CBC=y
+# CONFIG_CRYPTO_CFB is not set
 # CONFIG_CRYPTO_CTR is not set
 # CONFIG_CRYPTO_CTS is not set
 CONFIG_CRYPTO_ECB=y
 # CONFIG_CRYPTO_HCTR2 is not set
 # CONFIG_CRYPTO_KEYWRAP is not set
 # CONFIG_CRYPTO_LRW is not set
+# CONFIG_CRYPTO_OFB is not set
 # CONFIG_CRYPTO_PCBC is not set
 CONFIG_CRYPTO_XTS=y
 # end of Length-preserving ciphers and modes
@@ -3119,9 +3000,6 @@ CONFIG_CRYPTO_DRBG_HMAC=y
 # CONFIG_CRYPTO_DRBG_CTR is not set
 CONFIG_CRYPTO_DRBG=y
 CONFIG_CRYPTO_JITTERENTROPY=y
-CONFIG_CRYPTO_JITTERENTROPY_MEMORY_BLOCKS=64
-CONFIG_CRYPTO_JITTERENTROPY_MEMORY_BLOCKSIZE=32
-CONFIG_CRYPTO_JITTERENTROPY_OSR=1
 # end of Random number generation
 
 #
@@ -3134,6 +3012,7 @@ CONFIG_CRYPTO_USER_API_RNG=y
 # CONFIG_CRYPTO_USER_API_RNG_CAVP is not set
 CONFIG_CRYPTO_USER_API_AEAD=y
 # CONFIG_CRYPTO_USER_API_ENABLE_OBSOLETE is not set
+# CONFIG_CRYPTO_STATS is not set
 # end of Userspace interface
 
 CONFIG_CRYPTO_HASH_INFO=y
@@ -3159,8 +3038,6 @@ CONFIG_CRYPTO_AES_NI_INTEL=y
 # CONFIG_CRYPTO_TWOFISH_X86_64_3WAY is not set
 # CONFIG_CRYPTO_TWOFISH_AVX_X86_64 is not set
 # CONFIG_CRYPTO_ARIA_AESNI_AVX_X86_64 is not set
-# CONFIG_CRYPTO_ARIA_AESNI_AVX2_X86_64 is not set
-# CONFIG_CRYPTO_ARIA_GFNI_AVX512_X86_64 is not set
 # CONFIG_CRYPTO_CHACHA20_X86_64 is not set
 # CONFIG_CRYPTO_AEGIS128_AESNI_SSE2 is not set
 # CONFIG_CRYPTO_NHPOLY1305_SSE2 is not set
@@ -3195,6 +3072,7 @@ CONFIG_GENERIC_NET_UTILS=y
 # CONFIG_CORDIC is not set
 # CONFIG_PRIME_NUMBERS is not set
 CONFIG_RATIONAL=y
+CONFIG_GENERIC_PCI_IOMAP=y
 CONFIG_GENERIC_IOMAP=y
 CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
 CONFIG_ARCH_HAS_FAST_MULTIPLIER=y
@@ -3205,8 +3083,6 @@ CONFIG_ARCH_USE_SYM_ANNOTATIONS=y
 #
 CONFIG_CRYPTO_LIB_UTILS=y
 CONFIG_CRYPTO_LIB_AES=y
-CONFIG_CRYPTO_LIB_AESCFB=y
-CONFIG_CRYPTO_LIB_GF128MUL=y
 CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y
 # CONFIG_CRYPTO_LIB_CHACHA is not set
 # CONFIG_CRYPTO_LIB_CURVE25519 is not set
@@ -3237,6 +3113,7 @@ CONFIG_LIBCRC32C=y
 CONFIG_XZ_DEC=y
 CONFIG_XZ_DEC_X86=y
 # CONFIG_XZ_DEC_POWERPC is not set
+CONFIG_XZ_DEC_IA64=y
 # CONFIG_XZ_DEC_ARM is not set
 # CONFIG_XZ_DEC_ARMTHUMB is not set
 # CONFIG_XZ_DEC_SPARC is not set
@@ -3249,32 +3126,26 @@ CONFIG_REED_SOLOMON=y
 CONFIG_REED_SOLOMON_DEC8=y
 CONFIG_INTERVAL_TREE=y
 CONFIG_HAS_IOMEM=y
-CONFIG_HAS_IOPORT=y
 CONFIG_HAS_IOPORT_MAP=y
 CONFIG_HAS_DMA=y
 CONFIG_DMA_OPS=y
-CONFIG_NEED_SG_DMA_FLAGS=y
 CONFIG_NEED_SG_DMA_LENGTH=y
 CONFIG_NEED_DMA_MAP_STATE=y
 CONFIG_ARCH_DMA_ADDR_T_64BIT=y
 CONFIG_SWIOTLB=y
-# CONFIG_SWIOTLB_DYNAMIC is not set
-CONFIG_DMA_NEED_SYNC=y
 # CONFIG_DMA_API_DEBUG is not set
 CONFIG_SGL_ALLOC=y
+# CONFIG_FORCE_NR_CPUS is not set
 CONFIG_CPU_RMAP=y
 CONFIG_DQL=y
 CONFIG_GLOB=y
 # CONFIG_GLOB_SELFTEST is not set
 CONFIG_NLATTR=y
 # CONFIG_IRQ_POLL is not set
-CONFIG_DIMLIB=y
 CONFIG_UCS2_STRING=y
 CONFIG_HAVE_GENERIC_VDSO=y
 CONFIG_GENERIC_GETTIMEOFDAY=y
 CONFIG_GENERIC_VDSO_TIME_NS=y
-CONFIG_GENERIC_VDSO_OVERFLOW_PROTECT=y
-CONFIG_VDSO_GETRANDOM=y
 CONFIG_FONT_SUPPORT=y
 # CONFIG_FONTS is not set
 CONFIG_FONT_8x8=y
@@ -3282,16 +3153,12 @@ CONFIG_FONT_8x16=y
 CONFIG_SG_POOL=y
 CONFIG_ARCH_HAS_PMEM_API=y
 CONFIG_MEMREGION=y
-CONFIG_ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION=y
 CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE=y
 CONFIG_ARCH_HAS_COPY_MC=y
 CONFIG_ARCH_STACKWALK=y
 CONFIG_SBITMAP=y
-# CONFIG_LWQ_TEST is not set
 # end of Library routines
 
-CONFIG_FIRMWARE_TABLE=y
-
 #
 # Kernel hacking
 #
@@ -3318,7 +3185,7 @@ CONFIG_DEBUG_KERNEL=y
 #
 # Compile-time checks and compiler options
 #
-CONFIG_AS_HAS_NON_CONST_ULEB128=y
+CONFIG_AS_HAS_NON_CONST_LEB128=y
 CONFIG_DEBUG_INFO_NONE=y
 # CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT is not set
 # CONFIG_DEBUG_INFO_DWARF4 is not set
@@ -3345,7 +3212,7 @@ CONFIG_MAGIC_SYSRQ_SERIAL_SEQUENCE=""
 # CONFIG_DEBUG_FS is not set
 CONFIG_HAVE_ARCH_KGDB=y
 # CONFIG_KGDB is not set
-CONFIG_ARCH_HAS_UBSAN=y
+CONFIG_ARCH_HAS_UBSAN_SANITIZE_ALL=y
 # CONFIG_UBSAN is not set
 CONFIG_HAVE_ARCH_KCSAN=y
 # end of Generic Kernel Debugging Instruments
@@ -3365,15 +3232,15 @@ CONFIG_HAVE_ARCH_KCSAN=y
 # CONFIG_DEBUG_PAGEALLOC is not set
 # CONFIG_SLUB_DEBUG is not set
 # CONFIG_PAGE_OWNER is not set
+# CONFIG_PAGE_TABLE_CHECK is not set
 # CONFIG_PAGE_POISONING is not set
 # CONFIG_DEBUG_RODATA_TEST is not set
 CONFIG_ARCH_HAS_DEBUG_WX=y
 # CONFIG_DEBUG_WX is not set
 CONFIG_GENERIC_PTDUMP=y
+# CONFIG_DEBUG_OBJECTS is not set
 CONFIG_HAVE_DEBUG_KMEMLEAK=y
 # CONFIG_DEBUG_KMEMLEAK is not set
-# CONFIG_PER_VMA_LOCK_STATS is not set
-# CONFIG_DEBUG_OBJECTS is not set
 # CONFIG_DEBUG_STACK_USAGE is not set
 # CONFIG_SCHED_STACK_END_CHECK is not set
 CONFIG_ARCH_HAS_DEBUG_VM_PGTABLE=y
@@ -3385,7 +3252,6 @@ CONFIG_ARCH_HAS_DEBUG_VIRTUAL=y
 # CONFIG_DEBUG_PER_CPU_MAPS is not set
 CONFIG_ARCH_SUPPORTS_KMAP_LOCAL_FORCE_MAP=y
 # CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP is not set
-# CONFIG_MEM_ALLOC_PROFILING is not set
 CONFIG_HAVE_ARCH_KASAN=y
 CONFIG_HAVE_ARCH_KASAN_VMALLOC=y
 CONFIG_CC_HAS_KASAN_GENERIC=y
@@ -3407,26 +3273,21 @@ CONFIG_PANIC_TIMEOUT=0
 CONFIG_LOCKUP_DETECTOR=y
 CONFIG_SOFTLOCKUP_DETECTOR=y
 # CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
-CONFIG_HAVE_HARDLOCKUP_DETECTOR_BUDDY=y
-CONFIG_HARDLOCKUP_DETECTOR=y
-# CONFIG_HARDLOCKUP_DETECTOR_PREFER_BUDDY is not set
 CONFIG_HARDLOCKUP_DETECTOR_PERF=y
-# CONFIG_HARDLOCKUP_DETECTOR_BUDDY is not set
-# CONFIG_HARDLOCKUP_DETECTOR_ARCH is not set
-CONFIG_HARDLOCKUP_DETECTOR_COUNTS_HRTIMER=y
 CONFIG_HARDLOCKUP_CHECK_TIMESTAMP=y
+CONFIG_HARDLOCKUP_DETECTOR=y
 # CONFIG_BOOTPARAM_HARDLOCKUP_PANIC is not set
 CONFIG_DETECT_HUNG_TASK=y
 CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=120
 # CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set
 CONFIG_WQ_WATCHDOG=y
-# CONFIG_WQ_CPU_INTENSIVE_REPORT is not set
 # CONFIG_TEST_LOCKUP is not set
 # end of Debug Oops, Lockups and Hangs
 
 #
 # Scheduler Debugging
 #
+CONFIG_SCHED_DEBUG=y
 # CONFIG_SCHEDSTATS is not set
 # end of Scheduler Debugging
 
@@ -3452,7 +3313,6 @@ CONFIG_LOCK_DEBUGGING_SUPPORT=y
 # CONFIG_CSD_LOCK_WAIT_DEBUG is not set
 # end of Lock Debugging (spinlocks, mutexes, etc...)
 
-# CONFIG_NMI_CHECK_CPU is not set
 # CONFIG_DEBUG_IRQFLAGS is not set
 # CONFIG_STACKTRACE is not set
 # CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set
@@ -3465,9 +3325,12 @@ CONFIG_LOCK_DEBUGGING_SUPPORT=y
 # CONFIG_DEBUG_PLIST is not set
 # CONFIG_DEBUG_SG is not set
 # CONFIG_DEBUG_NOTIFIERS is not set
+# CONFIG_BUG_ON_DATA_CORRUPTION is not set
 # CONFIG_DEBUG_MAPLE_TREE is not set
 # end of Debug kernel data structures
 
+# CONFIG_DEBUG_CREDENTIALS is not set
+
 #
 # RCU Debugging
 #
@@ -3476,7 +3339,6 @@ CONFIG_LOCK_DEBUGGING_SUPPORT=y
 # CONFIG_RCU_REF_SCALE_TEST is not set
 CONFIG_RCU_CPU_STALL_TIMEOUT=21
 CONFIG_RCU_EXP_CPU_STALL_TIMEOUT=0
-# CONFIG_RCU_CPU_STALL_CPUTIME is not set
 # CONFIG_RCU_TRACE is not set
 # CONFIG_RCU_EQS_DEBUG is not set
 # end of RCU Debugging
@@ -3496,7 +3358,6 @@ CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
 CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
 CONFIG_HAVE_FENTRY=y
 CONFIG_HAVE_OBJTOOL_MCOUNT=y
-CONFIG_HAVE_OBJTOOL_NOP_MCOUNT=y
 CONFIG_HAVE_C_RECORDMCOUNT=y
 CONFIG_HAVE_BUILDTIME_MCOUNT_SORT=y
 CONFIG_TRACING_SUPPORT=y

From 2148e64aa35be335b942fc9bd6764ef56eb10a34 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Wed, 15 Jan 2025 12:20:20 +0100
Subject: [PATCH 32/37] coreboot-dasharo: move patches from Heads into Dasharo
 coreboot fork
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Patch 0003-CONFIG_RESOURCE_ALLOCATION_TOP_DOWN-CONFIG_DOMAIN_RESOURCE_32BIT_LIMIT.patch
is removed because it is no longer required.

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 modules/coreboot                              |      2 +-
 ...wuffs-upgrade-to-Wuffs_0.4.0-alpha.8.patch | 111421 ---------------
 ...ib_jpeg-avoidcalling-malloc-and-free.patch |     91 -
 ...N-CONFIG_DOMAIN_RESOURCE_32BIT_LIMIT.patch |    130 -
 4 files changed, 1 insertion(+), 111643 deletions(-)
 delete mode 100644 patches/coreboot-dasharo-unreleased/0001-vc_wuffs-upgrade-to-Wuffs_0.4.0-alpha.8.patch
 delete mode 100644 patches/coreboot-dasharo-unreleased/0002-lib_jpeg-avoidcalling-malloc-and-free.patch
 delete mode 100644 patches/coreboot-dasharo-unreleased/0003-CONFIG_RESOURCE_ALLOCATION_TOP_DOWN-CONFIG_DOMAIN_RESOURCE_32BIT_LIMIT.patch

diff --git a/modules/coreboot b/modules/coreboot
index 77176256..7236ba6f 100644
--- a/modules/coreboot
+++ b/modules/coreboot
@@ -96,7 +96,7 @@ $(eval $(call coreboot_module,purism,24.02.01))
 coreboot-dasharo_repo := https://github.com/dasharo/coreboot
 coreboot-dasharo_commit_hash := 8adaae026dc055fa8b445fbe32e5146576d56c28
 $(eval $(call coreboot_module,dasharo,24.02.01))
-coreboot-dasharo_patch_version := unreleased
+#coreboot-dasharo_patch_version := unreleased
 
 # Check that the board configured the coreboot version correctly
 ifeq "$(CONFIG_COREBOOT_VERSION)" ""
diff --git a/patches/coreboot-dasharo-unreleased/0001-vc_wuffs-upgrade-to-Wuffs_0.4.0-alpha.8.patch b/patches/coreboot-dasharo-unreleased/0001-vc_wuffs-upgrade-to-Wuffs_0.4.0-alpha.8.patch
deleted file mode 100644
index 7208d5eb..00000000
--- a/patches/coreboot-dasharo-unreleased/0001-vc_wuffs-upgrade-to-Wuffs_0.4.0-alpha.8.patch
+++ /dev/null
@@ -1,111421 +0,0 @@
-From b598d05d389e137baa10e277a37fca2c363fb295 Mon Sep 17 00:00:00 2001
-From: Nigel Tao <nigeltao@golang.org>
-Date: Tue, 13 Aug 2024 22:10:52 +1000
-Subject: [PATCH] vc/wuffs: upgrade to Wuffs 0.4.0-alpha.8
-
-We were previously at Wuffs 0.4.0-alpha.2. The C file was copied from
-https://github.com/google/wuffs-mirror-release-c and its hash matches
-https://github.com/google/wuffs-mirror-release-c/blob/90e4d81a6a8b7b601e8e568da32a105d7f7705e5/sync.txt#L9-L10
-
-$ sha256sum src/vendorcode/wuffs/wuffs-v0.4.c
-6c22caff4af929112601379a73f72461bc4719a5215366bcc90d599cbc442bb6  src/vendorcode/wuffs/wuffs-v0.4.c
-
-Change-Id: Ie90d989384e0db2b23d7d1b3d9a57920ac8a95a2
-Signed-off-by: Nigel Tao <nigeltao@golang.org>
-Reviewed-on: https://review.coreboot.org/c/coreboot/+/83894
-Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
-Reviewed-by: Nico Huber <nico.h@gmx.de>
-Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
----
- src/vendorcode/wuffs/wuffs-v0.4.c | 101194 ++++++++++++++++-----------
- 1 file changed, 58878 insertions(+), 42316 deletions(-)
-
-diff --git a/src/vendorcode/wuffs/wuffs-v0.4.c b/src/vendorcode/wuffs/wuffs-v0.4.c
-index bce9eb9798..0c6616a652 100644
---- a/src/vendorcode/wuffs/wuffs-v0.4.c
-+++ b/src/vendorcode/wuffs/wuffs-v0.4.c
-@@ -81,15 +81,43 @@ extern "C" {
- // each major.minor branch, the commit count should increase monotonically.
- //
- // WUFFS_VERSION was overridden by "wuffs gen -version" based on revision
--// ae8531f7f846fbbe3a7340bf88499ad294a1367b committed on 2023-10-07.
-+// 5d69840f8e7ca481551b02c7e8d4c5fb69521bb9 committed on 2024-08-12.
- #define WUFFS_VERSION 0x000040000
- #define WUFFS_VERSION_MAJOR 0
- #define WUFFS_VERSION_MINOR 4
- #define WUFFS_VERSION_PATCH 0
--#define WUFFS_VERSION_PRE_RELEASE_LABEL "alpha.2"
--#define WUFFS_VERSION_BUILD_METADATA_COMMIT_COUNT 3603
--#define WUFFS_VERSION_BUILD_METADATA_COMMIT_DATE 20231007
--#define WUFFS_VERSION_STRING "0.4.0-alpha.2+3603.20231007"
-+#define WUFFS_VERSION_PRE_RELEASE_LABEL "alpha.8"
-+#define WUFFS_VERSION_BUILD_METADATA_COMMIT_COUNT 3796
-+#define WUFFS_VERSION_BUILD_METADATA_COMMIT_DATE 20240812
-+#define WUFFS_VERSION_STRING "0.4.0-alpha.8+3796.20240812"
-+
-+// ---------------- Private Implementation Macros Re-definition Check
-+
-+// Users (those who #include the "wuffs-vM.N.c" file) should not define any
-+// WUFFS_PRIVATE_IMPL__ETC macros, only WUFFS_CONFIG__ETC macros (and
-+// WUFFS_IMPLEMENTATION). Mucking about with the private implementation macros
-+// is not supported and may break when upgrading to newer Wuffs versions.
-+
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_CRC32) ||       \
-+    defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON) ||        \
-+    defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64) ||          \
-+    defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2) ||       \
-+    defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3) ||       \
-+    defined(WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE) || \
-+    defined(WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION) ||     \
-+    defined(WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL) ||      \
-+    defined(WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U16) ||        \
-+    defined(WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U32) ||        \
-+    defined(WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U64) ||        \
-+    defined(WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U8)
-+
-+#if defined(__GNUC__) || defined(__clang__)
-+#warning "Defining WUFFS_PRIVATE_IMPL__ETC yourself is not supported"
-+#elif defined(_MSC_VER)
-+#pragma message("Defining WUFFS_PRIVATE_IMPL__ETC yourself is not supported")
-+#endif
-+
-+#endif
- 
- // ---------------- Configuration
- 
-@@ -117,11 +145,11 @@ extern "C" {
- // intrinsics. Look for __ARM_FEATURE_CRC32 instead.
- #if defined(__ARM_FEATURE_CRC32)
- #include <arm_acle.h>
--#define WUFFS_BASE__CPU_ARCH__ARM_CRC32
-+#define WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_CRC32
- #endif  // defined(__ARM_FEATURE_CRC32)
- #if defined(__ARM_NEON)
- #include <arm_neon.h>
--#define WUFFS_BASE__CPU_ARCH__ARM_NEON
-+#define WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON
- #endif  // defined(__ARM_NEON)
- #endif  // defined(__ARM_FEATURE_UNALIGNED) etc
- 
-@@ -129,26 +157,82 @@ extern "C" {
- // POPCNT. This is checked at runtime via cpuid, not at compile time.
- //
- // Likewise, "cpu_arch >= x86_avx2" also requires PCLMUL, POPCNT and SSE4.2.
--#if defined(__i386__) || defined(__x86_64__)
-+//
-+// ----
-+//
-+// Technically, we could use the SSE family on 32-bit x86, not just 64-bit x86.
-+// But some intrinsics don't compile in 32-bit mode. It's not worth the hassle.
-+// https://github.com/google/wuffs/issues/145
-+#if defined(__x86_64__)
- #if !defined(__native_client__)
- #include <cpuid.h>
- #include <x86intrin.h>
--// X86_FAMILY means X86 (32-bit) or X86_64 (64-bit, obviously).
--#define WUFFS_BASE__CPU_ARCH__X86_FAMILY
--#if defined(__x86_64__)
--#define WUFFS_BASE__CPU_ARCH__X86_64
--#endif  // defined(__x86_64__)
-+#define WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64
-+#define WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2
-+#define WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3
- #endif  // !defined(__native_client__)
--#endif  // defined(__i386__) || defined(__x86_64__)
-+#endif  // defined(__x86_64__)
- 
- #elif defined(_MSC_VER)  // (#if-chain ref AVOID_CPU_ARCH_1)
- 
--#if defined(_M_IX86) || defined(_M_X64)
--#if defined(__AVX__) || defined(__clang__)
-+#if defined(_M_X64)
-+
-+// On X86_64, Microsoft Visual C/C++ (MSVC) only supports SSE2 by default.
-+// There are /arch:SSE2, /arch:AVX and /arch:AVX2 compiler flags (the AVX2 one
-+// is roughly equivalent to X86_64_V3), but there is no /arch:SSE42 compiler
-+// flag that's equivalent to X86_64_V2.
-+//
-+// For getting maximum performance with X86_64 MSVC and Wuffs, pass /arch:AVX2
-+// (and then test on the oldest hardware you intend to support).
-+//
-+// Absent that compiler flag, either define one of the three macros listed
-+// below or else the X86_64 SIMD code will be disabled and you'll get a #pragma
-+// message stating this library "performs best with /arch:AVX2". This message
-+// is harmless and ignorable, in that the non-SIMD code is still correct and
-+// reasonably performant, but is a reminder that when combining Wuffs and MSVC,
-+// some compiler configuration is required for maximum performance.
-+//
-+//  - WUFFS_CONFIG__DISABLE_MSVC_CPU_ARCH__X86_64_FAMILY
-+//  - WUFFS_CONFIG__ENABLE_MSVC_CPU_ARCH__X86_64_V2 (enables SSE4.2 and below)
-+//  - WUFFS_CONFIG__ENABLE_MSVC_CPU_ARCH__X86_64_V3 (enables AVX2 and below)
-+//
-+// Defining the first one (WUFFS_CONFIG__DISABLE_MSVC_CPU_ARCH__X86_64_FAMILY)
-+// or defining none of those three (the default state) are equivalent (in that
-+// both disable the SIMD code paths), other than that pragma message.
-+//
-+// When defining these WUFFS_CONFIG__ENABLE_ETC macros with MSVC, be aware that
-+// some users report it leading to ICEs (Internal Compiler Errors), but other
-+// users report no problems at all (and improved performance). It's unclear
-+// exactly what combination of SIMD code and MSVC configuration lead to ICEs.
-+// Do your own testing with your own MSVC version and configuration.
-+//
-+// https://github.com/google/wuffs/issues/148
-+// https://github.com/google/wuffs/issues/151
-+// https://developercommunity.visualstudio.com/t/fatal--error-C1001:-Internal-compiler-er/10703305
-+//
-+// Clang (including clang-cl) and GCC don't need this WUFFS_CONFIG__ETC macro
-+// machinery, or having the Wuffs-the-library user to fiddle with compiler
-+// flags, because they support "__attribute__((target(arg)))".
-+#if defined(__AVX2__) || defined(__clang__) || \
-+    defined(WUFFS_CONFIG__ENABLE_MSVC_CPU_ARCH__X86_64_V3)
-+#define WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64
-+#define WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2
-+#define WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3
-+#elif defined(WUFFS_CONFIG__ENABLE_MSVC_CPU_ARCH__X86_64_V2)
-+#define WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64
-+#define WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2
-+#elif !defined(WUFFS_CONFIG__DISABLE_MSVC_CPU_ARCH__X86_64_FAMILY)
-+#pragma message("Wuffs with MSVC+X64 performs best with /arch:AVX2")
-+#endif  // defined(__AVX2__) || defined(__clang__) || etc
-+
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64)
-+
-+#if defined(WUFFS_CONFIG__DISABLE_MSVC_CPU_ARCH__X86_64_FAMILY)
-+#error "MSVC_CPU_ARCH simultaneously enabled and disabled"
-+#endif
- 
--// We need <intrin.h> for the __cpuid function.
- #include <intrin.h>
--// That's not enough for X64 SIMD, with clang-cl, if we want to use
-+// intrin.h isn't enough for X64 SIMD, with clang-cl, if we want to use
- // "__attribute__((target(arg)))" without e.g. "/arch:AVX".
- //
- // Some web pages suggest that <immintrin.h> is all you need, as it pulls in
-@@ -157,25 +241,9 @@ extern "C" {
- #include <immintrin.h>  // AVX, AVX2, FMA, POPCNT
- #include <nmmintrin.h>  // SSE4.2
- #include <wmmintrin.h>  // AES, PCLMUL
--// X86_FAMILY means X86 (32-bit) or X86_64 (64-bit, obviously).
--#define WUFFS_BASE__CPU_ARCH__X86_FAMILY
--#if defined(_M_X64)
--#define WUFFS_BASE__CPU_ARCH__X86_64
--#endif  // defined(_M_X64)
--
--#else  // defined(__AVX__) || defined(__clang__)
--
--// clang-cl (which defines both __clang__ and _MSC_VER) supports
--// "__attribute__((target(arg)))".
--//
--// For MSVC's cl.exe (unlike clang or gcc), SIMD capability is a compile-time
--// property of the source file (e.g. a /arch:AVX or -mavx compiler flag), not
--// of individual functions (that can be conditionally selected at runtime).
--#pragma message("Wuffs with MSVC+IX86/X64 needs /arch:AVX for best performance")
--
--#endif  // defined(__AVX__) || defined(__clang__)
--#endif  // defined(_M_IX86) || defined(_M_X64)
- 
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64)
-+#endif  // defined(_M_X64)
- #endif  // (#if-chain ref AVOID_CPU_ARCH_1)
- #endif  // (#if-chain ref AVOID_CPU_ARCH_0)
- 
-@@ -198,20 +266,20 @@ extern "C" {
- 
- static inline bool  //
- wuffs_base__cpu_arch__have_arm_crc32(void) {
--#if defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32)
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_CRC32)
-   return true;
- #else
-   return false;
--#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32)
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_CRC32)
- }
- 
- static inline bool  //
- wuffs_base__cpu_arch__have_arm_neon(void) {
--#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
-   return true;
- #else
-   return false;
--#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
- }
- 
- static inline bool  //
-@@ -220,7 +288,7 @@ wuffs_base__cpu_arch__have_x86_avx2(void) {
-     defined(__AVX2__)
-   return true;
- #else
--#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64)
-   // GCC defines these macros but MSVC does not.
-   //  - bit_AVX2 = (1 <<  5)
-   const unsigned int avx2_ebx7 = 0x00000020;
-@@ -258,9 +326,9 @@ wuffs_base__cpu_arch__have_x86_avx2(void) {
-     }
-   }
- #else
--#error "WUFFS_BASE__CPU_ARCH__ETC combined with an unsupported compiler"
-+#error "WUFFS_PRIVATE_IMPL__CPU_ARCH__ETC combined with an unsupported compiler"
- #endif  // defined(__GNUC__); defined(_MSC_VER)
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_64)
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64)
-   return false;
- #endif  // defined(__PCLMUL__) && defined(__POPCNT__) && defined(__SSE4_2__) &&
-         // defined(__AVX2__)
-@@ -271,7 +339,7 @@ wuffs_base__cpu_arch__have_x86_bmi2(void) {
- #if defined(__BMI2__)
-   return true;
- #else
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64)
-   // GCC defines these macros but MSVC does not.
-   //  - bit_BMI2 = (1 <<  8)
-   const unsigned int bmi2_ebx7 = 0x00000100;
-@@ -293,9 +361,9 @@ wuffs_base__cpu_arch__have_x86_bmi2(void) {
-     return true;
-   }
- #else
--#error "WUFFS_BASE__CPU_ARCH__ETC combined with an unsupported compiler"
-+#error "WUFFS_PRIVATE_IMPL__CPU_ARCH__ETC combined with an unsupported compiler"
- #endif  // defined(__GNUC__); defined(_MSC_VER)
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64)
-   return false;
- #endif  // defined(__BMI2__)
- }
-@@ -305,7 +373,7 @@ wuffs_base__cpu_arch__have_x86_sse42(void) {
- #if defined(__PCLMUL__) && defined(__POPCNT__) && defined(__SSE4_2__)
-   return true;
- #else
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64)
-   // GCC defines these macros but MSVC does not.
-   //  - bit_PCLMUL = (1 <<  1)
-   //  - bit_POPCNT = (1 << 23)
-@@ -329,9 +397,9 @@ wuffs_base__cpu_arch__have_x86_sse42(void) {
-     return true;
-   }
- #else
--#error "WUFFS_BASE__CPU_ARCH__ETC combined with an unsupported compiler"
-+#error "WUFFS_PRIVATE_IMPL__CPU_ARCH__ETC combined with an unsupported compiler"
- #endif  // defined(__GNUC__); defined(_MSC_VER)
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64)
-   return false;
- #endif  // defined(__PCLMUL__) && defined(__POPCNT__) && defined(__SSE4_2__)
- }
-@@ -350,9 +418,15 @@ wuffs_base__cpu_arch__have_x86_sse42(void) {
- // The "defined(__clang__)" isn't redundant. While vanilla clang defines
- // __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not.
- #if defined(__GNUC__) || defined(__clang__)
-+#define WUFFS_BASE__FORCE_INLINE __attribute__((__always_inline__))
- #define WUFFS_BASE__POTENTIALLY_UNUSED __attribute__((unused))
- #define WUFFS_BASE__WARN_UNUSED_RESULT __attribute__((warn_unused_result))
-+#elif defined(_MSC_VER)
-+#define WUFFS_BASE__FORCE_INLINE __forceinline
-+#define WUFFS_BASE__POTENTIALLY_UNUSED
-+#define WUFFS_BASE__WARN_UNUSED_RESULT
- #else
-+#define WUFFS_BASE__FORCE_INLINE
- #define WUFFS_BASE__POTENTIALLY_UNUSED
- #define WUFFS_BASE__WARN_UNUSED_RESULT
- #endif
-@@ -415,6 +489,37 @@ struct wuffs_unique_ptr_deleter {
- 
- // --------
- 
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wcast-qual"
-+#endif
-+
-+static inline uint8_t*  //
-+wuffs_base__strip_const_from_u8_ptr(const uint8_t* ptr) {
-+  return (uint8_t*)ptr;
-+}
-+
-+static inline uint16_t*  //
-+wuffs_base__strip_const_from_u16_ptr(const uint16_t* ptr) {
-+  return (uint16_t*)ptr;
-+}
-+
-+static inline uint32_t*  //
-+wuffs_base__strip_const_from_u32_ptr(const uint32_t* ptr) {
-+  return (uint32_t*)ptr;
-+}
-+
-+static inline uint64_t*  //
-+wuffs_base__strip_const_from_u64_ptr(const uint64_t* ptr) {
-+  return (uint64_t*)ptr;
-+}
-+
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+
-+// --------
-+
- // wuffs_base__empty_struct is used when a Wuffs function returns an empty
- // struct. In C, if a function f returns void, you can't say "x = f()", but in
- // Wuffs, if a function g returns empty, you can say "y = g()".
-@@ -483,6 +588,7 @@ extern const char wuffs_base__suspension__even_more_information[];
- extern const char wuffs_base__suspension__mispositioned_read[];
- extern const char wuffs_base__suspension__mispositioned_write[];
- extern const char wuffs_base__suspension__short_read[];
-+extern const char wuffs_base__suspension__short_workbuf[];
- extern const char wuffs_base__suspension__short_write[];
- extern const char wuffs_base__error__bad_i_o_position[];
- extern const char wuffs_base__error__bad_argument_length_too_short[];
-@@ -496,9 +602,11 @@ extern const char wuffs_base__error__bad_vtable[];
- extern const char wuffs_base__error__bad_workbuf_length[];
- extern const char wuffs_base__error__bad_wuffs_version[];
- extern const char wuffs_base__error__cannot_return_a_suspension[];
-+extern const char wuffs_base__error__disabled_by_wuffs_config_dst_pixel_format_enable_allowlist[];
- extern const char wuffs_base__error__disabled_by_previous_error[];
- extern const char wuffs_base__error__initialize_falsely_claimed_already_zeroed[];
- extern const char wuffs_base__error__initialize_not_called[];
-+extern const char wuffs_base__error__insufficient_history[];
- extern const char wuffs_base__error__interleaved_coroutine_calls[];
- extern const char wuffs_base__error__no_more_information[];
- extern const char wuffs_base__error__not_enough_data[];
-@@ -728,6 +836,9 @@ typedef struct wuffs_base__transform__output__struct {
- // Lempel–Ziv 4.
- #define WUFFS_BASE__FOURCC__LZ4 0x4C5A3420
- 
-+// Lzip.
-+#define WUFFS_BASE__FOURCC__LZIP 0x4C5A4950
-+
- // Lempel–Ziv Markov-chain Algorithm.
- #define WUFFS_BASE__FOURCC__LZMA 0x4C5A4D41
- 
-@@ -839,6 +950,8 @@ typedef struct wuffs_base__transform__output__struct {
- 
- #define WUFFS_BASE__QUIRK_IGNORE_CHECKSUM 1
- 
-+#define WUFFS_BASE__QUIRK_QUALITY 2
-+
- // --------
- 
- // Flicks are a unit of time. One flick (frame-tick) is 1 / 705_600_000 of a
-@@ -1092,6 +1205,96 @@ wuffs_base__multiply_u64(uint64_t x, uint64_t y) {
- 
- // --------
- 
-+typedef struct wuffs_base__bitvec256__struct {
-+  // elements_u64[0] holds the LSBs (least significant bits) and
-+  // elements_u64[3] holds the MSBs (most significant bits).
-+  uint64_t elements_u64[4];
-+} wuffs_base__bitvec256;
-+
-+static inline wuffs_base__bitvec256  //
-+wuffs_base__make_bitvec256(uint64_t e00,
-+                           uint64_t e01,
-+                           uint64_t e02,
-+                           uint64_t e03) {
-+  wuffs_base__bitvec256 res;
-+  res.elements_u64[0] = e00;
-+  res.elements_u64[1] = e01;
-+  res.elements_u64[2] = e02;
-+  res.elements_u64[3] = e03;
-+  return res;
-+}
-+
-+static inline uint64_t  //
-+wuffs_base__bitvec256__get_u64(const wuffs_base__bitvec256* b, uint32_t i) {
-+  return b->elements_u64[i & 3];
-+}
-+
-+// --------
-+
-+// wuffs_base__optional_u63 is like a std::optional<uint64_t>, but for C (not
-+// just C++) and the value can only hold 63 bits (not 64).
-+//
-+// Do not manipulate repr directly; it is a private implementation detail.
-+typedef struct wuffs_base__optional_u63__struct {
-+  uint64_t repr;
-+
-+#ifdef __cplusplus
-+  inline bool has_value() const;
-+  inline uint64_t value() const;
-+  inline uint64_t value_or(uint64_t default_value) const;
-+#endif  // __cplusplus
-+
-+} wuffs_base__optional_u63;
-+
-+// wuffs_base__make_optional_u63 ignores value when has_value is false.
-+//
-+// Preconditions:
-+//  - value < (1 << 63).
-+static inline wuffs_base__optional_u63  //
-+wuffs_base__make_optional_u63(bool has_value, uint64_t value) {
-+  wuffs_base__optional_u63 res;
-+  res.repr = has_value ? ((value << 1u) | 1u) : 0u;
-+  return res;
-+}
-+
-+static inline bool  //
-+wuffs_base__optional_u63__has_value(const wuffs_base__optional_u63* o) {
-+  return o->repr;
-+}
-+
-+// wuffs_base__optional_u63__value returns zero when o does not have a value.
-+static inline uint64_t  //
-+wuffs_base__optional_u63__value(const wuffs_base__optional_u63* o) {
-+  return o->repr >> 1u;
-+}
-+
-+static inline uint64_t  //
-+wuffs_base__optional_u63__value_or(const wuffs_base__optional_u63* o,
-+                                   uint64_t default_value) {
-+  return o->repr ? (o->repr >> 1u) : default_value;
-+}
-+
-+#ifdef __cplusplus
-+
-+inline bool  //
-+wuffs_base__optional_u63::has_value() const {
-+  return wuffs_base__optional_u63__has_value(this);
-+}
-+
-+inline uint64_t  //
-+wuffs_base__optional_u63::value() const {
-+  return wuffs_base__optional_u63__value(this);
-+}
-+
-+inline uint64_t  //
-+wuffs_base__optional_u63::value_or(uint64_t default_value) const {
-+  return wuffs_base__optional_u63__value_or(this, default_value);
-+}
-+
-+#endif  // __cplusplus
-+
-+// --------
-+
- // The "defined(__clang__)" isn't redundant. While vanilla clang defines
- // __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not.
- #if (defined(__GNUC__) || defined(__clang__)) && (__SIZEOF_LONG__ == 8)
-@@ -1529,7 +1732,7 @@ wuffs_base__make_slice_u64(uint64_t* ptr, size_t len) {
- static inline wuffs_base__slice_u8  //
- wuffs_base__make_slice_u8_ij(uint8_t* ptr, size_t i, size_t j) {
-   wuffs_base__slice_u8 ret;
--  ret.ptr = ptr + i;
-+  ret.ptr = ptr ? (ptr + i) : NULL;
-   ret.len = (j >= i) ? (j - i) : 0;
-   return ret;
- }
-@@ -1537,7 +1740,7 @@ wuffs_base__make_slice_u8_ij(uint8_t* ptr, size_t i, size_t j) {
- static inline wuffs_base__slice_u16  //
- wuffs_base__make_slice_u16_ij(uint16_t* ptr, size_t i, size_t j) {
-   wuffs_base__slice_u16 ret;
--  ret.ptr = ptr + i;
-+  ret.ptr = ptr ? (ptr + i) : NULL;
-   ret.len = (j >= i) ? (j - i) : 0;
-   return ret;
- }
-@@ -1545,7 +1748,7 @@ wuffs_base__make_slice_u16_ij(uint16_t* ptr, size_t i, size_t j) {
- static inline wuffs_base__slice_u32  //
- wuffs_base__make_slice_u32_ij(uint32_t* ptr, size_t i, size_t j) {
-   wuffs_base__slice_u32 ret;
--  ret.ptr = ptr + i;
-+  ret.ptr = ptr ? (ptr + i) : NULL;
-   ret.len = (j >= i) ? (j - i) : 0;
-   return ret;
- }
-@@ -1553,7 +1756,7 @@ wuffs_base__make_slice_u32_ij(uint32_t* ptr, size_t i, size_t j) {
- static inline wuffs_base__slice_u64  //
- wuffs_base__make_slice_u64_ij(uint64_t* ptr, size_t i, size_t j) {
-   wuffs_base__slice_u64 ret;
--  ret.ptr = ptr + i;
-+  ret.ptr = ptr ? (ptr + i) : NULL;
-   ret.len = (j >= i) ? (j - i) : 0;
-   return ret;
- }
-@@ -1696,7 +1899,7 @@ wuffs_base__slice_u8__subslice_i(wuffs_base__slice_u8 s, uint64_t i) {
-   if ((i <= SIZE_MAX) && (i <= s.len)) {
-     return wuffs_base__make_slice_u8(s.ptr + i, ((size_t)(s.len - i)));
-   }
--  return wuffs_base__make_slice_u8(NULL, 0);
-+  return wuffs_base__empty_slice_u8();
- }
- 
- // wuffs_base__slice_u8__subslice_j returns s[:j].
-@@ -1707,7 +1910,7 @@ wuffs_base__slice_u8__subslice_j(wuffs_base__slice_u8 s, uint64_t j) {
-   if ((j <= SIZE_MAX) && (j <= s.len)) {
-     return wuffs_base__make_slice_u8(s.ptr, ((size_t)j));
-   }
--  return wuffs_base__make_slice_u8(NULL, 0);
-+  return wuffs_base__empty_slice_u8();
- }
- 
- // wuffs_base__slice_u8__subslice_ij returns s[i:j].
-@@ -1720,7 +1923,7 @@ wuffs_base__slice_u8__subslice_ij(wuffs_base__slice_u8 s,
-   if ((i <= j) && (j <= SIZE_MAX) && (j <= s.len)) {
-     return wuffs_base__make_slice_u8(s.ptr + i, ((size_t)(j - i)));
-   }
--  return wuffs_base__make_slice_u8(NULL, 0);
-+  return wuffs_base__empty_slice_u8();
- }
- 
- // wuffs_base__table_u8__subtable_ij returns t[ix:jx, iy:jy].
-@@ -1814,6 +2017,20 @@ WUFFS_BASE__MAYBE_STATIC int32_t  //
- wuffs_base__magic_number_guess_fourcc(wuffs_base__slice_u8 prefix_data,
-                                       bool prefix_closed);
- 
-+// ---------------- Quirk Values
-+
-+// These constants are the value half of a key-value pair, where the key is
-+// WUFFS_BASE__QUIRK_QUALITY.
-+//
-+// In the Wuffs API, set_quirk takes a u64 value. These macro definitions are
-+// likewise unsigned values (uint64_t) but for this particular key, they are
-+// best interpreted as signed values (int64_t). "Lower-than-default quality"
-+// and "higher-than-default quality", as signed values, are -1 and +1.
-+//
-+// See doc/note/quirks.md for some more discussion about trade-offs.
-+#define WUFFS_BASE__QUIRK_QUALITY__VALUE__LOWER_QUALITY UINT64_MAX
-+#define WUFFS_BASE__QUIRK_QUALITY__VALUE__HIGHER_QUALITY ((uint64_t)1)
-+
- // ---------------- Ranges and Rects
- 
- // See https://github.com/google/wuffs/blob/main/doc/note/ranges-and-rects.md
-@@ -3011,7 +3228,8 @@ wuffs_base__io_buffer__compact(wuffs_base__io_buffer* buf) {
- // wuffs_base__io_buffer__compact_retaining moves any written but unread bytes
- // closer to the start of the buffer. It retains H bytes of history (the most
- // recently read bytes), where H is min(buf->meta.ri, history_retain_length).
--// A postcondition is that buf->meta.ri == H.
-+// It is therefore a no-op if history_retain_length is UINT64_MAX. A
-+// postcondition is that buf->meta.ri == H.
- //
- // wuffs_base__io_buffer__compact_retaining(0) is equivalent to
- // wuffs_base__io_buffer__compact().
-@@ -3056,7 +3274,7 @@ wuffs_base__io_buffer__reader_length(const wuffs_base__io_buffer* buf) {
- 
- static inline uint8_t*  //
- wuffs_base__io_buffer__reader_pointer(const wuffs_base__io_buffer* buf) {
--  return buf ? (buf->data.ptr + buf->meta.ri) : NULL;
-+  return (buf && buf->data.ptr) ? (buf->data.ptr + buf->meta.ri) : NULL;
- }
- 
- static inline uint64_t  //
-@@ -3066,7 +3284,8 @@ wuffs_base__io_buffer__reader_position(const wuffs_base__io_buffer* buf) {
- 
- static inline wuffs_base__slice_u8  //
- wuffs_base__io_buffer__reader_slice(const wuffs_base__io_buffer* buf) {
--  return buf ? wuffs_base__make_slice_u8(buf->data.ptr + buf->meta.ri,
-+  return (buf && buf->data.ptr)
-+             ? wuffs_base__make_slice_u8(buf->data.ptr + buf->meta.ri,
-                                          buf->meta.wi - buf->meta.ri)
-              : wuffs_base__empty_slice_u8();
- }
-@@ -3078,7 +3297,7 @@ wuffs_base__io_buffer__writer_length(const wuffs_base__io_buffer* buf) {
- 
- static inline uint8_t*  //
- wuffs_base__io_buffer__writer_pointer(const wuffs_base__io_buffer* buf) {
--  return buf ? (buf->data.ptr + buf->meta.wi) : NULL;
-+  return (buf && buf->data.ptr) ? (buf->data.ptr + buf->meta.wi) : NULL;
- }
- 
- static inline uint64_t  //
-@@ -3088,7 +3307,8 @@ wuffs_base__io_buffer__writer_position(const wuffs_base__io_buffer* buf) {
- 
- static inline wuffs_base__slice_u8  //
- wuffs_base__io_buffer__writer_slice(const wuffs_base__io_buffer* buf) {
--  return buf ? wuffs_base__make_slice_u8(buf->data.ptr + buf->meta.wi,
-+  return (buf && buf->data.ptr)
-+             ? wuffs_base__make_slice_u8(buf->data.ptr + buf->meta.wi,
-                                          buf->data.len - buf->meta.wi)
-              : wuffs_base__empty_slice_u8();
- }
-@@ -3183,49 +3403,53 @@ wuffs_base__make_token(uint64_t repr) {
- 
- // --------
- 
-+// clang-format off
-+
-+// --------
-+
- #define WUFFS_BASE__TOKEN__LENGTH__MAX_INCL 0xFFFF
- 
--#define WUFFS_BASE__TOKEN__VALUE__SHIFT 17
--#define WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT 17
--#define WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT 42
--#define WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT 17
-+#define WUFFS_BASE__TOKEN__VALUE__SHIFT               17
-+#define WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT     17
-+#define WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT         42
-+#define WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT         17
- #define WUFFS_BASE__TOKEN__VALUE_BASE_CATEGORY__SHIFT 38
--#define WUFFS_BASE__TOKEN__VALUE_BASE_DETAIL__SHIFT 17
--#define WUFFS_BASE__TOKEN__CONTINUED__SHIFT 16
--#define WUFFS_BASE__TOKEN__LENGTH__SHIFT 0
-+#define WUFFS_BASE__TOKEN__VALUE_BASE_DETAIL__SHIFT   17
-+#define WUFFS_BASE__TOKEN__CONTINUED__SHIFT           16
-+#define WUFFS_BASE__TOKEN__LENGTH__SHIFT               0
- 
--#define WUFFS_BASE__TOKEN__VALUE_EXTENSION__NUM_BITS 46
-+#define WUFFS_BASE__TOKEN__VALUE_EXTENSION__NUM_BITS  46
- 
- // --------
- 
--#define WUFFS_BASE__TOKEN__VBC__FILLER 0
--#define WUFFS_BASE__TOKEN__VBC__STRUCTURE 1
--#define WUFFS_BASE__TOKEN__VBC__STRING 2
--#define WUFFS_BASE__TOKEN__VBC__UNICODE_CODE_POINT 3
--#define WUFFS_BASE__TOKEN__VBC__LITERAL 4
--#define WUFFS_BASE__TOKEN__VBC__NUMBER 5
--#define WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_SIGNED 6
-+#define WUFFS_BASE__TOKEN__VBC__FILLER                  0
-+#define WUFFS_BASE__TOKEN__VBC__STRUCTURE               1
-+#define WUFFS_BASE__TOKEN__VBC__STRING                  2
-+#define WUFFS_BASE__TOKEN__VBC__UNICODE_CODE_POINT      3
-+#define WUFFS_BASE__TOKEN__VBC__LITERAL                 4
-+#define WUFFS_BASE__TOKEN__VBC__NUMBER                  5
-+#define WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_SIGNED   6
- #define WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_UNSIGNED 7
- 
- // --------
- 
--#define WUFFS_BASE__TOKEN__VBD__FILLER__PUNCTUATION 0x00001
-+#define WUFFS_BASE__TOKEN__VBD__FILLER__PUNCTUATION   0x00001
- #define WUFFS_BASE__TOKEN__VBD__FILLER__COMMENT_BLOCK 0x00002
--#define WUFFS_BASE__TOKEN__VBD__FILLER__COMMENT_LINE 0x00004
-+#define WUFFS_BASE__TOKEN__VBD__FILLER__COMMENT_LINE  0x00004
- 
- // COMMENT_ANY is a bit-wise or of COMMENT_BLOCK AND COMMENT_LINE.
--#define WUFFS_BASE__TOKEN__VBD__FILLER__COMMENT_ANY 0x00006
-+#define WUFFS_BASE__TOKEN__VBD__FILLER__COMMENT_ANY   0x00006
- 
- // --------
- 
--#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH 0x00001
--#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__POP 0x00002
-+#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH      0x00001
-+#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__POP       0x00002
- #define WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_NONE 0x00010
- #define WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_LIST 0x00020
- #define WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_DICT 0x00040
--#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE 0x01000
--#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST 0x02000
--#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT 0x04000
-+#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE   0x01000
-+#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST   0x02000
-+#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT   0x04000
- 
- // --------
- 
-@@ -3245,11 +3469,11 @@ wuffs_base__make_token(uint64_t repr) {
- //
- // The lack of any particular bit is conservative: it is valid for all-ASCII
- // strings, in a single- or multi-token chain, to have none of these bits set.
--#define WUFFS_BASE__TOKEN__VBD__STRING__DEFINITELY_UTF_8 0x00001
--#define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_MUST_BE_UTF_8 0x00002
-+#define WUFFS_BASE__TOKEN__VBD__STRING__DEFINITELY_UTF_8      0x00001
-+#define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_MUST_BE_UTF_8   0x00002
- #define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_SHOULD_BE_UTF_8 0x00004
--#define WUFFS_BASE__TOKEN__VBD__STRING__DEFINITELY_ASCII 0x00010
--#define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_MUST_BE_ASCII 0x00020
-+#define WUFFS_BASE__TOKEN__VBD__STRING__DEFINITELY_ASCII      0x00010
-+#define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_MUST_BE_ASCII   0x00020
- #define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_SHOULD_BE_ASCII 0x00040
- 
- // CONVERT_D_DST_S_SRC means that multiples of S source bytes (possibly padded)
-@@ -3264,22 +3488,22 @@ wuffs_base__make_token(uint64_t repr) {
- // When src is the empty string, multiple conversion algorithms are applicable
- // (so these bits are not necessarily mutually exclusive), all producing the
- // same empty dst string.
--#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_0_DST_1_SRC_DROP 0x00100
--#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_1_SRC_COPY 0x00200
-+#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_0_DST_1_SRC_DROP        0x00100
-+#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_1_SRC_COPY        0x00200
- #define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_2_SRC_HEXADECIMAL 0x00400
- #define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_4_SRC_BACKSLASH_X 0x00800
- #define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_3_DST_4_SRC_BASE_64_STD 0x01000
- #define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_3_DST_4_SRC_BASE_64_URL 0x02000
--#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_4_DST_5_SRC_ASCII_85 0x04000
-+#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_4_DST_5_SRC_ASCII_85    0x04000
- #define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_5_DST_8_SRC_BASE_32_HEX 0x08000
- #define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_5_DST_8_SRC_BASE_32_STD 0x10000
- 
- // --------
- 
- #define WUFFS_BASE__TOKEN__VBD__LITERAL__UNDEFINED 0x00001
--#define WUFFS_BASE__TOKEN__VBD__LITERAL__NULL 0x00002
--#define WUFFS_BASE__TOKEN__VBD__LITERAL__FALSE 0x00004
--#define WUFFS_BASE__TOKEN__VBD__LITERAL__TRUE 0x00008
-+#define WUFFS_BASE__TOKEN__VBD__LITERAL__NULL      0x00002
-+#define WUFFS_BASE__TOKEN__VBD__LITERAL__FALSE     0x00004
-+#define WUFFS_BASE__TOKEN__VBD__LITERAL__TRUE      0x00008
- 
- // --------
- 
-@@ -3292,8 +3516,8 @@ wuffs_base__make_token(uint64_t repr) {
- // For a source string of "+123" or "-0x9A", only the first two are valid.
- //
- // For a source string of "123.", only the first one is valid.
--#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_FLOATING_POINT 0x00001
--#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_SIGNED 0x00002
-+#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_FLOATING_POINT   0x00001
-+#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_SIGNED   0x00002
- #define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_UNSIGNED 0x00004
- 
- #define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_NEG_INF 0x00010
-@@ -3305,11 +3529,15 @@ wuffs_base__make_token(uint64_t repr) {
- // "300", which are big-endian, little-endian or text. For binary formats, the
- // token length (after adjusting for FORMAT_IGNORE_ETC) discriminates
- // e.g. u16 little-endian vs u32 little-endian.
--#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_BINARY_BIG_ENDIAN 0x00100
-+#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_BINARY_BIG_ENDIAN    0x00100
- #define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_BINARY_LITTLE_ENDIAN 0x00200
--#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_TEXT 0x00400
-+#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_TEXT                 0x00400
-+
-+#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_IGNORE_FIRST_BYTE    0x01000
-+
-+// --------
- 
--#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_IGNORE_FIRST_BYTE 0x01000
-+// clang-format on
- 
- // --------
- 
-@@ -3421,6 +3649,22 @@ wuffs_base__token::length() const {
- 
- // --------
- 
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wcast-qual"
-+#endif
-+
-+static inline wuffs_base__token*  //
-+wuffs_base__strip_const_from_token_ptr(const wuffs_base__token* ptr) {
-+  return (wuffs_base__token*)ptr;
-+}
-+
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+
-+// --------
-+
- typedef WUFFS_BASE__SLICE(wuffs_base__token) wuffs_base__slice_token;
- 
- static inline wuffs_base__slice_token  //
-@@ -3574,7 +3818,8 @@ wuffs_base__token_buffer__compact(wuffs_base__token_buffer* buf) {
- // wuffs_base__token_buffer__compact_retaining moves any written but unread
- // tokens closer to the start of the buffer. It retains H tokens of history
- // (the most recently read tokens), where H is min(buf->meta.ri,
--// history_retain_length). A postcondition is that buf->meta.ri == H.
-+// history_retain_length). It is therefore a no-op if history_retain_length is
-+// UINT64_MAX. A postcondition is that buf->meta.ri == H.
- //
- // wuffs_base__token_buffer__compact_retaining(0) is equivalent to
- // wuffs_base__token_buffer__compact().
-@@ -3730,51 +3975,51 @@ wuffs_base__token_buffer::writer_token_position() const {
- //
- // You can pass the C stdlib's malloc as the malloc_func.
- //
--// It returns an empty slice (containing a NULL ptr field) if (num_uxx *
--// sizeof(uintxx_t)) would overflow SIZE_MAX.
-+// It returns an empty slice (containing a NULL ptr field) if num_uxx is zero
-+// or if (num_uxx * sizeof(uintxx_t)) would overflow SIZE_MAX.
- 
- static inline wuffs_base__slice_u8  //
- wuffs_base__malloc_slice_u8(void* (*malloc_func)(size_t), uint64_t num_u8) {
--  if (malloc_func && (num_u8 <= (SIZE_MAX / sizeof(uint8_t)))) {
-+  if (malloc_func && num_u8 && (num_u8 <= (SIZE_MAX / sizeof(uint8_t)))) {
-     void* p = (*malloc_func)((size_t)(num_u8 * sizeof(uint8_t)));
-     if (p) {
-       return wuffs_base__make_slice_u8((uint8_t*)(p), (size_t)num_u8);
-     }
-   }
--  return wuffs_base__make_slice_u8(NULL, 0);
-+  return wuffs_base__empty_slice_u8();
- }
- 
- static inline wuffs_base__slice_u16  //
- wuffs_base__malloc_slice_u16(void* (*malloc_func)(size_t), uint64_t num_u16) {
--  if (malloc_func && (num_u16 <= (SIZE_MAX / sizeof(uint16_t)))) {
-+  if (malloc_func && num_u16 && (num_u16 <= (SIZE_MAX / sizeof(uint16_t)))) {
-     void* p = (*malloc_func)((size_t)(num_u16 * sizeof(uint16_t)));
-     if (p) {
-       return wuffs_base__make_slice_u16((uint16_t*)(p), (size_t)num_u16);
-     }
-   }
--  return wuffs_base__make_slice_u16(NULL, 0);
-+  return wuffs_base__empty_slice_u16();
- }
- 
- static inline wuffs_base__slice_u32  //
- wuffs_base__malloc_slice_u32(void* (*malloc_func)(size_t), uint64_t num_u32) {
--  if (malloc_func && (num_u32 <= (SIZE_MAX / sizeof(uint32_t)))) {
-+  if (malloc_func && num_u32 && (num_u32 <= (SIZE_MAX / sizeof(uint32_t)))) {
-     void* p = (*malloc_func)((size_t)(num_u32 * sizeof(uint32_t)));
-     if (p) {
-       return wuffs_base__make_slice_u32((uint32_t*)(p), (size_t)num_u32);
-     }
-   }
--  return wuffs_base__make_slice_u32(NULL, 0);
-+  return wuffs_base__empty_slice_u32();
- }
- 
- static inline wuffs_base__slice_u64  //
- wuffs_base__malloc_slice_u64(void* (*malloc_func)(size_t), uint64_t num_u64) {
--  if (malloc_func && (num_u64 <= (SIZE_MAX / sizeof(uint64_t)))) {
-+  if (malloc_func && num_u64 && (num_u64 <= (SIZE_MAX / sizeof(uint64_t)))) {
-     void* p = (*malloc_func)((size_t)(num_u64 * sizeof(uint64_t)));
-     if (p) {
-       return wuffs_base__make_slice_u64((uint64_t*)(p), (size_t)num_u64);
-     }
-   }
--  return wuffs_base__make_slice_u64(NULL, 0);
-+  return wuffs_base__empty_slice_u64();
- }
- 
- // ---------------- Images
-@@ -3838,6 +4083,26 @@ wuffs_base__color_u32_argb_premul__as__color_u8_gray(
-   return (uint8_t)(weighted_average >> 24);
- }
- 
-+static inline uint16_t  //
-+wuffs_base__color_u32_argb_premul__as__color_u16_alpha_gray_nonpremul(
-+    wuffs_base__color_u32_argb_premul c) {
-+  uint32_t a = 0xFF & (c >> 24);
-+  if (a == 0) {
-+    return 0;
-+  }
-+  uint32_t a16 = a * 0x101;
-+
-+  uint32_t cr = 0xFF & (c >> 16);
-+  cr = (cr * (0x101 * 0xFFFF)) / a16;
-+  uint32_t cg = 0xFF & (c >> 8);
-+  cg = (cg * (0x101 * 0xFFFF)) / a16;
-+  uint32_t cb = 0xFF & (c >> 0);
-+  cb = (cb * (0x101 * 0xFFFF)) / a16;
-+
-+  uint32_t weighted_average = (19595 * cr) + (38470 * cg) + (7471 * cb) + 32768;
-+  return (uint16_t)((a16 & 0xFF00) | (weighted_average >> 24));
-+}
-+
- static inline uint16_t  //
- wuffs_base__color_u32_argb_premul__as__color_u16_gray(
-     wuffs_base__color_u32_argb_premul c) {
-@@ -4114,49 +4379,53 @@ wuffs_base__make_pixel_format(uint32_t repr) {
- // Common 8-bit-depth pixel formats. This list is not exhaustive; not all valid
- // wuffs_base__pixel_format values are present.
- 
--#define WUFFS_BASE__PIXEL_FORMAT__INVALID 0x00000000
-+// clang-format off
-+
-+#define WUFFS_BASE__PIXEL_FORMAT__INVALID                   0x00000000
- 
--#define WUFFS_BASE__PIXEL_FORMAT__A 0x02000008
-+#define WUFFS_BASE__PIXEL_FORMAT__A                         0x02000008
- 
--#define WUFFS_BASE__PIXEL_FORMAT__Y 0x20000008
--#define WUFFS_BASE__PIXEL_FORMAT__Y_16LE 0x2000000B
--#define WUFFS_BASE__PIXEL_FORMAT__Y_16BE 0x2010000B
--#define WUFFS_BASE__PIXEL_FORMAT__YA_NONPREMUL 0x21000008
--#define WUFFS_BASE__PIXEL_FORMAT__YA_PREMUL 0x22000008
-+#define WUFFS_BASE__PIXEL_FORMAT__Y                         0x20000008
-+#define WUFFS_BASE__PIXEL_FORMAT__Y_16LE                    0x2000000B
-+#define WUFFS_BASE__PIXEL_FORMAT__Y_16BE                    0x2010000B
-+#define WUFFS_BASE__PIXEL_FORMAT__YA_NONPREMUL              0x21000088
-+#define WUFFS_BASE__PIXEL_FORMAT__YA_PREMUL                 0x22000088
- 
--#define WUFFS_BASE__PIXEL_FORMAT__YCBCR 0x40020888
--#define WUFFS_BASE__PIXEL_FORMAT__YCBCRA_NONPREMUL 0x41038888
--#define WUFFS_BASE__PIXEL_FORMAT__YCBCRK 0x50038888
-+#define WUFFS_BASE__PIXEL_FORMAT__YCBCR                     0x40020888
-+#define WUFFS_BASE__PIXEL_FORMAT__YCBCRA_NONPREMUL          0x41038888
-+#define WUFFS_BASE__PIXEL_FORMAT__YCBCRK                    0x50038888
- 
--#define WUFFS_BASE__PIXEL_FORMAT__YCOCG 0x60020888
--#define WUFFS_BASE__PIXEL_FORMAT__YCOCGA_NONPREMUL 0x61038888
--#define WUFFS_BASE__PIXEL_FORMAT__YCOCGK 0x70038888
-+#define WUFFS_BASE__PIXEL_FORMAT__YCOCG                     0x60020888
-+#define WUFFS_BASE__PIXEL_FORMAT__YCOCGA_NONPREMUL          0x61038888
-+#define WUFFS_BASE__PIXEL_FORMAT__YCOCGK                    0x70038888
- 
--#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL 0x81040008
--#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL 0x82040008
--#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY 0x83040008
-+#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL   0x81040008
-+#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL      0x82040008
-+#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY      0x83040008
- 
--#define WUFFS_BASE__PIXEL_FORMAT__BGR_565 0x80000565
--#define WUFFS_BASE__PIXEL_FORMAT__BGR 0x80000888
--#define WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL 0x81008888
--#define WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE 0x8100BBBB
--#define WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL 0x82008888
--#define WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE 0x8200BBBB
--#define WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY 0x83008888
--#define WUFFS_BASE__PIXEL_FORMAT__BGRX 0x90008888
-+#define WUFFS_BASE__PIXEL_FORMAT__BGR_565                   0x80000565
-+#define WUFFS_BASE__PIXEL_FORMAT__BGR                       0x80000888
-+#define WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL            0x81008888
-+#define WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE     0x8100BBBB
-+#define WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL               0x82008888
-+#define WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE        0x8200BBBB
-+#define WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY               0x83008888
-+#define WUFFS_BASE__PIXEL_FORMAT__BGRX                      0x90008888
- 
--#define WUFFS_BASE__PIXEL_FORMAT__RGB 0xA0000888
--#define WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL 0xA1008888
--#define WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE 0xA100BBBB
--#define WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL 0xA2008888
--#define WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE 0xA200BBBB
--#define WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY 0xA3008888
--#define WUFFS_BASE__PIXEL_FORMAT__RGBX 0xB0008888
-+#define WUFFS_BASE__PIXEL_FORMAT__RGB                       0xA0000888
-+#define WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL            0xA1008888
-+#define WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE     0xA100BBBB
-+#define WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL               0xA2008888
-+#define WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE        0xA200BBBB
-+#define WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY               0xA3008888
-+#define WUFFS_BASE__PIXEL_FORMAT__RGBX                      0xB0008888
- 
--#define WUFFS_BASE__PIXEL_FORMAT__CMY 0xC0020888
--#define WUFFS_BASE__PIXEL_FORMAT__CMYK 0xD0038888
-+#define WUFFS_BASE__PIXEL_FORMAT__CMY                       0xC0020888
-+#define WUFFS_BASE__PIXEL_FORMAT__CMYK                      0xD0038888
- 
--extern const uint32_t wuffs_base__pixel_format__bits_per_channel[16];
-+// clang-format on
-+
-+extern const uint32_t wuffs_private_impl__pixel_format__bits_per_channel[16];
- 
- static inline bool  //
- wuffs_base__pixel_format__is_valid(const wuffs_base__pixel_format* f) {
-@@ -4170,10 +4439,14 @@ wuffs_base__pixel_format__bits_per_pixel(const wuffs_base__pixel_format* f) {
-   if (((f->repr >> 16) & 0x03) != 0) {
-     return 0;
-   }
--  return wuffs_base__pixel_format__bits_per_channel[0x0F & (f->repr >> 0)] +
--         wuffs_base__pixel_format__bits_per_channel[0x0F & (f->repr >> 4)] +
--         wuffs_base__pixel_format__bits_per_channel[0x0F & (f->repr >> 8)] +
--         wuffs_base__pixel_format__bits_per_channel[0x0F & (f->repr >> 12)];
-+  return wuffs_private_impl__pixel_format__bits_per_channel[0x0F &
-+                                                            (f->repr >> 0)] +
-+         wuffs_private_impl__pixel_format__bits_per_channel[0x0F &
-+                                                            (f->repr >> 4)] +
-+         wuffs_private_impl__pixel_format__bits_per_channel[0x0F &
-+                                                            (f->repr >> 8)] +
-+         wuffs_private_impl__pixel_format__bits_per_channel[0x0F &
-+                                                            (f->repr >> 12)];
- }
- 
- static inline bool  //
-@@ -4391,15 +4664,20 @@ wuffs_base__pixel_config__set(wuffs_base__pixel_config* c,
-     return;
-   }
-   if (pixfmt_repr) {
--    uint64_t wh = ((uint64_t)width) * ((uint64_t)height);
--    // TODO: handle things other than 1 byte per pixel.
--    if (wh <= ((uint64_t)SIZE_MAX)) {
-+    do {
-+#if SIZE_MAX < 0xFFFFFFFFFFFFFFFFull
-+      uint64_t wh = ((uint64_t)width) * ((uint64_t)height);
-+      // TODO: handle things other than 1 byte per pixel.
-+      if (wh > ((uint64_t)SIZE_MAX)) {
-+        break;
-+      }
-+#endif
-       c->private_impl.pixfmt.repr = pixfmt_repr;
-       c->private_impl.pixsub.repr = pixsub_repr;
-       c->private_impl.width = width;
-       c->private_impl.height = height;
-       return;
--    }
-+    } while (0);
-   }
- 
-   c->private_impl.pixfmt.repr = 0;
-@@ -5117,7 +5395,7 @@ wuffs_base__pixel_buffer__palette(wuffs_base__pixel_buffer* pb) {
-           tab->ptr, WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH);
-     }
-   }
--  return wuffs_base__make_slice_u8(NULL, 0);
-+  return wuffs_base__empty_slice_u8();
- }
- 
- static inline wuffs_base__slice_u8  //
-@@ -6202,6 +6480,113 @@ struct wuffs_base__hasher_u64__struct {
- 
- // --------
- 
-+extern const char wuffs_base__hasher_bitvec256__vtable_name[];
-+
-+typedef struct wuffs_base__hasher_bitvec256__func_ptrs__struct {
-+  wuffs_base__bitvec256 (*checksum_bitvec256)(
-+    const void* self);
-+  uint64_t (*get_quirk)(
-+    const void* self,
-+    uint32_t a_key);
-+  wuffs_base__status (*set_quirk)(
-+    void* self,
-+    uint32_t a_key,
-+    uint64_t a_value);
-+  wuffs_base__empty_struct (*update)(
-+    void* self,
-+    wuffs_base__slice_u8 a_x);
-+  wuffs_base__bitvec256 (*update_bitvec256)(
-+    void* self,
-+    wuffs_base__slice_u8 a_x);
-+} wuffs_base__hasher_bitvec256__func_ptrs;
-+
-+typedef struct wuffs_base__hasher_bitvec256__struct wuffs_base__hasher_bitvec256;
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__bitvec256
-+wuffs_base__hasher_bitvec256__checksum_bitvec256(
-+    const wuffs_base__hasher_bitvec256* self);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_base__hasher_bitvec256__get_quirk(
-+    const wuffs_base__hasher_bitvec256* self,
-+    uint32_t a_key);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_base__hasher_bitvec256__set_quirk(
-+    wuffs_base__hasher_bitvec256* self,
-+    uint32_t a_key,
-+    uint64_t a_value);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_base__hasher_bitvec256__update(
-+    wuffs_base__hasher_bitvec256* self,
-+    wuffs_base__slice_u8 a_x);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__bitvec256
-+wuffs_base__hasher_bitvec256__update_bitvec256(
-+    wuffs_base__hasher_bitvec256* self,
-+    wuffs_base__slice_u8 a_x);
-+
-+#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
-+
-+struct wuffs_base__hasher_bitvec256__struct {
-+  struct {
-+    uint32_t magic;
-+    uint32_t active_coroutine;
-+    wuffs_base__vtable first_vtable;
-+  } private_impl;
-+
-+#ifdef __cplusplus
-+#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
-+  using unique_ptr = std::unique_ptr<wuffs_base__hasher_bitvec256, wuffs_unique_ptr_deleter>;
-+#endif
-+
-+  inline wuffs_base__bitvec256
-+  checksum_bitvec256() const {
-+    return wuffs_base__hasher_bitvec256__checksum_bitvec256(this);
-+  }
-+
-+  inline uint64_t
-+  get_quirk(
-+      uint32_t a_key) const {
-+    return wuffs_base__hasher_bitvec256__get_quirk(
-+        this, a_key);
-+  }
-+
-+  inline wuffs_base__status
-+  set_quirk(
-+      uint32_t a_key,
-+      uint64_t a_value) {
-+    return wuffs_base__hasher_bitvec256__set_quirk(
-+        this, a_key, a_value);
-+  }
-+
-+  inline wuffs_base__empty_struct
-+  update(
-+      wuffs_base__slice_u8 a_x) {
-+    return wuffs_base__hasher_bitvec256__update(
-+        this, a_x);
-+  }
-+
-+  inline wuffs_base__bitvec256
-+  update_bitvec256(
-+      wuffs_base__slice_u8 a_x) {
-+    return wuffs_base__hasher_bitvec256__update_bitvec256(
-+        this, a_x);
-+  }
-+
-+#endif  // __cplusplus
-+};  // struct wuffs_base__hasher_bitvec256__struct
-+
-+#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
-+
-+// --------
-+
- extern const char wuffs_base__image_decoder__vtable_name[];
- 
- typedef struct wuffs_base__image_decoder__func_ptrs__struct {
-@@ -6225,8 +6610,6 @@ typedef struct wuffs_base__image_decoder__func_ptrs__struct {
-   uint64_t (*get_quirk)(
-     const void* self,
-     uint32_t a_key);
--  uint64_t (*history_retain_length)(
--    const void* self);
-   uint32_t (*num_animation_loops)(
-     const void* self);
-   uint64_t (*num_decoded_frame_configs)(
-@@ -6291,11 +6674,6 @@ wuffs_base__image_decoder__get_quirk(
-     const wuffs_base__image_decoder* self,
-     uint32_t a_key);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_base__image_decoder__history_retain_length(
--    const wuffs_base__image_decoder* self);
--
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint32_t
- wuffs_base__image_decoder__num_animation_loops(
-@@ -6398,11 +6776,6 @@ struct wuffs_base__image_decoder__struct {
-         this, a_key);
-   }
- 
--  inline uint64_t
--  history_retain_length() const {
--    return wuffs_base__image_decoder__history_retain_length(this);
--  }
--
-   inline uint32_t
-   num_animation_loops() const {
-     return wuffs_base__image_decoder__num_animation_loops(this);
-@@ -6466,11 +6839,11 @@ struct wuffs_base__image_decoder__struct {
- extern const char wuffs_base__io_transformer__vtable_name[];
- 
- typedef struct wuffs_base__io_transformer__func_ptrs__struct {
-+  wuffs_base__optional_u63 (*dst_history_retain_length)(
-+    const void* self);
-   uint64_t (*get_quirk)(
-     const void* self,
-     uint32_t a_key);
--  uint64_t (*history_retain_length)(
--    const void* self);
-   wuffs_base__status (*set_quirk)(
-     void* self,
-     uint32_t a_key,
-@@ -6486,17 +6859,17 @@ typedef struct wuffs_base__io_transformer__func_ptrs__struct {
- 
- typedef struct wuffs_base__io_transformer__struct wuffs_base__io_transformer;
- 
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
-+wuffs_base__io_transformer__dst_history_retain_length(
-+    const wuffs_base__io_transformer* self);
-+
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
- wuffs_base__io_transformer__get_quirk(
-     const wuffs_base__io_transformer* self,
-     uint32_t a_key);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_base__io_transformer__history_retain_length(
--    const wuffs_base__io_transformer* self);
--
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
- wuffs_base__io_transformer__set_quirk(
-@@ -6531,6 +6904,11 @@ struct wuffs_base__io_transformer__struct {
-   using unique_ptr = std::unique_ptr<wuffs_base__io_transformer, wuffs_unique_ptr_deleter>;
- #endif
- 
-+  inline wuffs_base__optional_u63
-+  dst_history_retain_length() const {
-+    return wuffs_base__io_transformer__dst_history_retain_length(this);
-+  }
-+
-   inline uint64_t
-   get_quirk(
-       uint32_t a_key) const {
-@@ -6538,11 +6916,6 @@ struct wuffs_base__io_transformer__struct {
-         this, a_key);
-   }
- 
--  inline uint64_t
--  history_retain_length() const {
--    return wuffs_base__io_transformer__history_retain_length(this);
--  }
--
-   inline wuffs_base__status
-   set_quirk(
-       uint32_t a_key,
-@@ -6583,8 +6956,6 @@ typedef struct wuffs_base__token_decoder__func_ptrs__struct {
-   uint64_t (*get_quirk)(
-     const void* self,
-     uint32_t a_key);
--  uint64_t (*history_retain_length)(
--    const void* self);
-   wuffs_base__status (*set_quirk)(
-     void* self,
-     uint32_t a_key,
-@@ -6609,11 +6980,6 @@ wuffs_base__token_decoder__get_quirk(
-     const wuffs_base__token_decoder* self,
-     uint32_t a_key);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_base__token_decoder__history_retain_length(
--    const wuffs_base__token_decoder* self);
--
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
- wuffs_base__token_decoder__set_quirk(
-@@ -6656,11 +7022,6 @@ struct wuffs_base__token_decoder__struct {
-         this, a_key);
-   }
- 
--  inline uint64_t
--  history_retain_length() const {
--    return wuffs_base__token_decoder__history_retain_length(this);
--  }
--
-   inline wuffs_base__status
-   set_quirk(
-       uint32_t a_key,
-@@ -6918,9 +7279,7 @@ extern const char wuffs_bmp__error__unsupported_bmp_file[];
- 
- // ---------------- Public Consts
- 
--#define WUFFS_BMP__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
--
--#define WUFFS_BMP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
-+#define WUFFS_BMP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
- 
- // ---------------- Struct Declarations
- 
-@@ -7053,11 +7412,6 @@ wuffs_bmp__decoder__tell_me_more(
-     wuffs_base__more_information* a_minfo,
-     wuffs_base__io_buffer* a_src);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_bmp__decoder__history_retain_length(
--    const wuffs_bmp__decoder* self);
--
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
- wuffs_bmp__decoder__workbuf_len(
-@@ -7116,14 +7470,14 @@ struct wuffs_bmp__decoder__struct {
-     bool f_rle_padded;
-     wuffs_base__pixel_swizzler f_swizzler;
- 
--    uint32_t p_decode_image_config[1];
--    uint32_t p_do_decode_image_config[1];
--    uint32_t p_decode_frame_config[1];
--    uint32_t p_do_decode_frame_config[1];
--    uint32_t p_decode_frame[1];
--    uint32_t p_do_decode_frame[1];
--    uint32_t p_tell_me_more[1];
--    uint32_t p_read_palette[1];
-+    uint32_t p_decode_image_config;
-+    uint32_t p_do_decode_image_config;
-+    uint32_t p_decode_frame_config;
-+    uint32_t p_do_decode_frame_config;
-+    uint32_t p_decode_frame;
-+    uint32_t p_do_decode_frame;
-+    uint32_t p_tell_me_more;
-+    uint32_t p_read_palette;
-   } private_impl;
- 
-   struct {
-@@ -7132,14 +7486,14 @@ struct wuffs_bmp__decoder__struct {
- 
-     struct {
-       uint64_t scratch;
--    } s_do_decode_image_config[1];
-+    } s_do_decode_image_config;
-     struct {
-       uint64_t scratch;
--    } s_do_decode_frame[1];
-+    } s_do_decode_frame;
-     struct {
-       uint32_t v_i;
-       uint64_t scratch;
--    } s_read_palette[1];
-+    } s_read_palette;
-   } private_data;
- 
- #ifdef __cplusplus
-@@ -7283,11 +7637,6 @@ struct wuffs_bmp__decoder__struct {
-     return wuffs_bmp__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
-   }
- 
--  inline uint64_t
--  history_retain_length() const {
--    return wuffs_bmp__decoder__history_retain_length(this);
--  }
--
-   inline wuffs_base__range_ii_u64
-   workbuf_len() const {
-     return wuffs_bmp__decoder__workbuf_len(this);
-@@ -7316,9 +7665,9 @@ extern const char wuffs_bzip2__error__unsupported_block_randomization[];
- 
- // ---------------- Public Consts
- 
--#define WUFFS_BZIP2__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
-+#define WUFFS_BZIP2__DECODER_DST_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0u
- 
--#define WUFFS_BZIP2__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
-+#define WUFFS_BZIP2__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
- 
- // ---------------- Struct Declarations
- 
-@@ -7386,8 +7735,8 @@ wuffs_bzip2__decoder__set_quirk(
-     uint64_t a_value);
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_bzip2__decoder__history_retain_length(
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
-+wuffs_bzip2__decoder__dst_history_retain_length(
-     const wuffs_bzip2__decoder* self);
- 
- WUFFS_BASE__GENERATED_C_CODE
-@@ -7452,12 +7801,12 @@ struct wuffs_bzip2__decoder__struct {
-     uint32_t f_num_sections;
-     uint32_t f_code_lengths_bitmask;
- 
--    uint32_t p_transform_io[1];
--    uint32_t p_do_transform_io[1];
--    uint32_t p_prepare_block[1];
--    uint32_t p_read_code_lengths[1];
--    uint32_t p_flush_slow[1];
--    uint32_t p_decode_huffman_slow[1];
-+    uint32_t p_transform_io;
-+    uint32_t p_do_transform_io;
-+    uint32_t p_prepare_block;
-+    uint32_t p_read_code_lengths;
-+    uint32_t p_flush_slow;
-+    uint32_t p_decode_huffman_slow;
-   } private_impl;
- 
-   struct {
-@@ -7474,15 +7823,15 @@ struct wuffs_bzip2__decoder__struct {
-       uint32_t v_i;
-       uint64_t v_tag;
-       uint32_t v_final_checksum_want;
--    } s_do_transform_io[1];
-+    } s_do_transform_io;
-     struct {
-       uint32_t v_i;
-       uint32_t v_selector;
--    } s_prepare_block[1];
-+    } s_prepare_block;
-     struct {
-       uint32_t v_i;
-       uint32_t v_code_length;
--    } s_read_code_lengths[1];
-+    } s_read_code_lengths;
-     struct {
-       uint32_t v_flush_pointer;
-       uint32_t v_flush_repeat_count;
-@@ -7491,10 +7840,10 @@ struct wuffs_bzip2__decoder__struct {
-       uint32_t v_block_size;
-       uint8_t v_curr;
-       uint64_t scratch;
--    } s_flush_slow[1];
-+    } s_flush_slow;
-     struct {
-       uint32_t v_node_index;
--    } s_decode_huffman_slow[1];
-+    } s_decode_huffman_slow;
-   } private_data;
- 
- #ifdef __cplusplus
-@@ -7572,9 +7921,9 @@ struct wuffs_bzip2__decoder__struct {
-     return wuffs_bzip2__decoder__set_quirk(this, a_key, a_value);
-   }
- 
--  inline uint64_t
--  history_retain_length() const {
--    return wuffs_bzip2__decoder__history_retain_length(this);
-+  inline wuffs_base__optional_u63
-+  dst_history_retain_length() const {
-+    return wuffs_bzip2__decoder__dst_history_retain_length(this);
-   }
- 
-   inline wuffs_base__range_ii_u64
-@@ -7606,25 +7955,23 @@ extern const char wuffs_cbor__error__unsupported_recursion_depth[];
- 
- // ---------------- Public Consts
- 
--#define WUFFS_CBOR__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
-+#define WUFFS_CBOR__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
- 
--#define WUFFS_CBOR__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
-+#define WUFFS_CBOR__DECODER_DEPTH_MAX_INCL 1024u
- 
--#define WUFFS_CBOR__DECODER_DEPTH_MAX_INCL 1024
-+#define WUFFS_CBOR__DECODER_DST_TOKEN_BUFFER_LENGTH_MIN_INCL 2u
- 
--#define WUFFS_CBOR__DECODER_DST_TOKEN_BUFFER_LENGTH_MIN_INCL 2
-+#define WUFFS_CBOR__DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL 9u
- 
--#define WUFFS_CBOR__DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL 9
-+#define WUFFS_CBOR__TOKEN_VALUE_MAJOR 787997u
- 
--#define WUFFS_CBOR__TOKEN_VALUE_MAJOR 787997
-+#define WUFFS_CBOR__TOKEN_VALUE_MINOR__DETAIL_MASK 262143u
- 
--#define WUFFS_CBOR__TOKEN_VALUE_MINOR__DETAIL_MASK 262143
-+#define WUFFS_CBOR__TOKEN_VALUE_MINOR__MINUS_1_MINUS_X 16777216u
- 
--#define WUFFS_CBOR__TOKEN_VALUE_MINOR__MINUS_1_MINUS_X 16777216
-+#define WUFFS_CBOR__TOKEN_VALUE_MINOR__SIMPLE_VALUE 8388608u
- 
--#define WUFFS_CBOR__TOKEN_VALUE_MINOR__SIMPLE_VALUE 8388608
--
--#define WUFFS_CBOR__TOKEN_VALUE_MINOR__TAG 4194304
-+#define WUFFS_CBOR__TOKEN_VALUE_MINOR__TAG 4194304u
- 
- // ---------------- Struct Declarations
- 
-@@ -7691,11 +8038,6 @@ wuffs_cbor__decoder__set_quirk(
-     uint32_t a_key,
-     uint64_t a_value);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_cbor__decoder__history_retain_length(
--    const wuffs_cbor__decoder* self);
--
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
- wuffs_cbor__decoder__workbuf_len(
-@@ -7738,7 +8080,7 @@ struct wuffs_cbor__decoder__struct {
- 
-     bool f_end_of_data;
- 
--    uint32_t p_decode_tokens[1];
-+    uint32_t p_decode_tokens;
-   } private_impl;
- 
-   struct {
-@@ -7750,7 +8092,7 @@ struct wuffs_cbor__decoder__struct {
-       uint32_t v_depth;
-       bool v_tagged;
-       uint8_t v_indefinite_string_major_type;
--    } s_decode_tokens[1];
-+    } s_decode_tokens;
-   } private_data;
- 
- #ifdef __cplusplus
-@@ -7828,11 +8170,6 @@ struct wuffs_cbor__decoder__struct {
-     return wuffs_cbor__decoder__set_quirk(this, a_key, a_value);
-   }
- 
--  inline uint64_t
--  history_retain_length() const {
--    return wuffs_cbor__decoder__history_retain_length(this);
--  }
--
-   inline wuffs_base__range_ii_u64
-   workbuf_len() const {
-     return wuffs_cbor__decoder__workbuf_len(this);
-@@ -8074,6 +8411,227 @@ struct wuffs_crc32__ieee_hasher__struct {
- 
- #endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC32) || defined(WUFFS_NONMONOLITHIC)
- 
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC64) || defined(WUFFS_NONMONOLITHIC)
-+
-+// ---------------- Status Codes
-+
-+// ---------------- Public Consts
-+
-+// ---------------- Struct Declarations
-+
-+typedef struct wuffs_crc64__ecma_hasher__struct wuffs_crc64__ecma_hasher;
-+
-+#ifdef __cplusplus
-+extern "C" {
-+#endif
-+
-+// ---------------- Public Initializer Prototypes
-+
-+// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
-+// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
-+//
-+// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
-+// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_crc64__ecma_hasher__initialize(
-+    wuffs_crc64__ecma_hasher* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options);
-+
-+size_t
-+sizeof__wuffs_crc64__ecma_hasher(void);
-+
-+// ---------------- Allocs
-+
-+// These functions allocate and initialize Wuffs structs. They return NULL if
-+// memory allocation fails. If they return non-NULL, there is no need to call
-+// wuffs_foo__bar__initialize, but the caller is responsible for eventually
-+// calling free on the returned pointer. That pointer is effectively a C++
-+// std::unique_ptr<T, wuffs_unique_ptr_deleter>.
-+
-+wuffs_crc64__ecma_hasher*
-+wuffs_crc64__ecma_hasher__alloc(void);
-+
-+static inline wuffs_base__hasher_u64*
-+wuffs_crc64__ecma_hasher__alloc_as__wuffs_base__hasher_u64(void) {
-+  return (wuffs_base__hasher_u64*)(wuffs_crc64__ecma_hasher__alloc());
-+}
-+
-+// ---------------- Upcasts
-+
-+static inline wuffs_base__hasher_u64*
-+wuffs_crc64__ecma_hasher__upcast_as__wuffs_base__hasher_u64(
-+    wuffs_crc64__ecma_hasher* p) {
-+  return (wuffs_base__hasher_u64*)p;
-+}
-+
-+// ---------------- Public Function Prototypes
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_crc64__ecma_hasher__get_quirk(
-+    const wuffs_crc64__ecma_hasher* self,
-+    uint32_t a_key);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_crc64__ecma_hasher__set_quirk(
-+    wuffs_crc64__ecma_hasher* self,
-+    uint32_t a_key,
-+    uint64_t a_value);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_crc64__ecma_hasher__update(
-+    wuffs_crc64__ecma_hasher* self,
-+    wuffs_base__slice_u8 a_x);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_crc64__ecma_hasher__update_u64(
-+    wuffs_crc64__ecma_hasher* self,
-+    wuffs_base__slice_u8 a_x);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_crc64__ecma_hasher__checksum_u64(
-+    const wuffs_crc64__ecma_hasher* self);
-+
-+#ifdef __cplusplus
-+}  // extern "C"
-+#endif
-+
-+// ---------------- Struct Definitions
-+
-+// These structs' fields, and the sizeof them, are private implementation
-+// details that aren't guaranteed to be stable across Wuffs versions.
-+//
-+// See https://en.wikipedia.org/wiki/Opaque_pointer#C
-+
-+#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
-+
-+struct wuffs_crc64__ecma_hasher__struct {
-+  // Do not access the private_impl's or private_data's fields directly. There
-+  // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
-+  // the wuffs_foo__bar__baz functions.
-+  //
-+  // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
-+  // can be stack allocated when WUFFS_IMPLEMENTATION is defined.
-+
-+  struct {
-+    uint32_t magic;
-+    uint32_t active_coroutine;
-+    wuffs_base__vtable vtable_for__wuffs_base__hasher_u64;
-+    wuffs_base__vtable null_vtable;
-+
-+    uint64_t f_state;
-+
-+    wuffs_base__empty_struct (*choosy_up)(
-+        wuffs_crc64__ecma_hasher* self,
-+        wuffs_base__slice_u8 a_x);
-+  } private_impl;
-+
-+#ifdef __cplusplus
-+#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
-+  using unique_ptr = std::unique_ptr<wuffs_crc64__ecma_hasher, wuffs_unique_ptr_deleter>;
-+
-+  // On failure, the alloc_etc functions return nullptr. They don't throw.
-+
-+  static inline unique_ptr
-+  alloc() {
-+    return unique_ptr(wuffs_crc64__ecma_hasher__alloc());
-+  }
-+
-+  static inline wuffs_base__hasher_u64::unique_ptr
-+  alloc_as__wuffs_base__hasher_u64() {
-+    return wuffs_base__hasher_u64::unique_ptr(
-+        wuffs_crc64__ecma_hasher__alloc_as__wuffs_base__hasher_u64());
-+  }
-+#endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
-+
-+#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
-+  // Disallow constructing or copying an object via standard C++ mechanisms,
-+  // e.g. the "new" operator, as this struct is intentionally opaque. Its total
-+  // size and field layout is not part of the public, stable, memory-safe API.
-+  // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
-+  // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
-+  // their first argument) rather than tweaking bar.private_impl.qux fields.
-+  //
-+  // In C, we can just leave wuffs_foo__bar as an incomplete type (unless
-+  // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
-+  // order to provide convenience methods. These forward on "this", so that you
-+  // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
-+  wuffs_crc64__ecma_hasher__struct() = delete;
-+  wuffs_crc64__ecma_hasher__struct(const wuffs_crc64__ecma_hasher__struct&) = delete;
-+  wuffs_crc64__ecma_hasher__struct& operator=(
-+      const wuffs_crc64__ecma_hasher__struct&) = delete;
-+#endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
-+
-+#if !defined(WUFFS_IMPLEMENTATION)
-+  // As above, the size of the struct is not part of the public API, and unless
-+  // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
-+  // allocated, not stack allocated. Its size is not intended to be known at
-+  // compile time, but it is unfortunately divulged as a side effect of
-+  // defining C++ convenience methods. Use "sizeof__T()", calling the function,
-+  // instead of "sizeof T", invoking the operator. To make the two values
-+  // different, so that passing the latter will be rejected by the initialize
-+  // function, we add an arbitrary amount of dead weight.
-+  uint8_t dead_weight[123000000];  // 123 MB.
-+#endif  // !defined(WUFFS_IMPLEMENTATION)
-+
-+  inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+  initialize(
-+      size_t sizeof_star_self,
-+      uint64_t wuffs_version,
-+      uint32_t options) {
-+    return wuffs_crc64__ecma_hasher__initialize(
-+        this, sizeof_star_self, wuffs_version, options);
-+  }
-+
-+  inline wuffs_base__hasher_u64*
-+  upcast_as__wuffs_base__hasher_u64() {
-+    return (wuffs_base__hasher_u64*)this;
-+  }
-+
-+  inline uint64_t
-+  get_quirk(
-+      uint32_t a_key) const {
-+    return wuffs_crc64__ecma_hasher__get_quirk(this, a_key);
-+  }
-+
-+  inline wuffs_base__status
-+  set_quirk(
-+      uint32_t a_key,
-+      uint64_t a_value) {
-+    return wuffs_crc64__ecma_hasher__set_quirk(this, a_key, a_value);
-+  }
-+
-+  inline wuffs_base__empty_struct
-+  update(
-+      wuffs_base__slice_u8 a_x) {
-+    return wuffs_crc64__ecma_hasher__update(this, a_x);
-+  }
-+
-+  inline uint64_t
-+  update_u64(
-+      wuffs_base__slice_u8 a_x) {
-+    return wuffs_crc64__ecma_hasher__update_u64(this, a_x);
-+  }
-+
-+  inline uint64_t
-+  checksum_u64() const {
-+    return wuffs_crc64__ecma_hasher__checksum_u64(this);
-+  }
-+
-+#endif  // __cplusplus
-+};  // struct wuffs_crc64__ecma_hasher__struct
-+
-+#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
-+
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC64) || defined(WUFFS_NONMONOLITHIC)
-+
- #if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__DEFLATE) || defined(WUFFS_NONMONOLITHIC)
- 
- // ---------------- Status Codes
-@@ -8095,9 +8653,9 @@ extern const char wuffs_deflate__error__truncated_input[];
- 
- // ---------------- Public Consts
- 
--#define WUFFS_DEFLATE__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
-+#define WUFFS_DEFLATE__DECODER_DST_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0u
- 
--#define WUFFS_DEFLATE__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 1
-+#define WUFFS_DEFLATE__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 1u
- 
- // ---------------- Struct Declarations
- 
-@@ -8171,8 +8729,8 @@ wuffs_deflate__decoder__set_quirk(
-     uint64_t a_value);
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_deflate__decoder__history_retain_length(
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
-+wuffs_deflate__decoder__dst_history_retain_length(
-     const wuffs_deflate__decoder* self);
- 
- WUFFS_BASE__GENERATED_C_CODE
-@@ -8222,16 +8780,16 @@ struct wuffs_deflate__decoder__struct {
-     uint32_t f_n_huffs_bits[2];
-     bool f_end_of_block;
- 
--    uint32_t p_transform_io[1];
--    uint32_t p_do_transform_io[1];
--    uint32_t p_decode_blocks[1];
--    uint32_t p_decode_uncompressed[1];
--    uint32_t p_init_dynamic_huffman[1];
-+    uint32_t p_transform_io;
-+    uint32_t p_do_transform_io;
-+    uint32_t p_decode_blocks;
-+    uint32_t p_decode_uncompressed;
-+    uint32_t p_init_dynamic_huffman;
-     wuffs_base__status (*choosy_decode_huffman_fast64)(
-         wuffs_deflate__decoder* self,
-         wuffs_base__io_buffer* a_dst,
-         wuffs_base__io_buffer* a_src);
--    uint32_t p_decode_huffman_slow[1];
-+    uint32_t p_decode_huffman_slow;
-   } private_impl;
- 
-   struct {
-@@ -8241,11 +8799,11 @@ struct wuffs_deflate__decoder__struct {
- 
-     struct {
-       uint32_t v_final;
--    } s_decode_blocks[1];
-+    } s_decode_blocks;
-     struct {
-       uint32_t v_length;
-       uint64_t scratch;
--    } s_decode_uncompressed[1];
-+    } s_decode_uncompressed;
-     struct {
-       uint32_t v_bits;
-       uint32_t v_n_bits;
-@@ -8257,7 +8815,7 @@ struct wuffs_deflate__decoder__struct {
-       uint32_t v_n_extra_bits;
-       uint8_t v_rep_symbol;
-       uint32_t v_rep_count;
--    } s_init_dynamic_huffman[1];
-+    } s_init_dynamic_huffman;
-     struct {
-       uint32_t v_bits;
-       uint32_t v_n_bits;
-@@ -8269,7 +8827,7 @@ struct wuffs_deflate__decoder__struct {
-       uint32_t v_length;
-       uint32_t v_dist_minus_1;
-       uint64_t scratch;
--    } s_decode_huffman_slow[1];
-+    } s_decode_huffman_slow;
-   } private_data;
- 
- #ifdef __cplusplus
-@@ -8353,9 +8911,9 @@ struct wuffs_deflate__decoder__struct {
-     return wuffs_deflate__decoder__set_quirk(this, a_key, a_value);
-   }
- 
--  inline uint64_t
--  history_retain_length() const {
--    return wuffs_deflate__decoder__history_retain_length(this);
-+  inline wuffs_base__optional_u63
-+  dst_history_retain_length() const {
-+    return wuffs_deflate__decoder__dst_history_retain_length(this);
-   }
- 
-   inline wuffs_base__range_ii_u64
-@@ -8393,23 +8951,21 @@ extern const char wuffs_gif__error__truncated_input[];
- 
- // ---------------- Public Consts
- 
--#define WUFFS_GIF__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
-+#define WUFFS_GIF__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
- 
--#define WUFFS_GIF__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
-+#define WUFFS_GIF__QUIRK_DELAY_NUM_DECODED_FRAMES 1041635328u
- 
--#define WUFFS_GIF__QUIRK_DELAY_NUM_DECODED_FRAMES 1041635328
-+#define WUFFS_GIF__QUIRK_FIRST_FRAME_LOCAL_PALETTE_MEANS_BLACK_BACKGROUND 1041635329u
- 
--#define WUFFS_GIF__QUIRK_FIRST_FRAME_LOCAL_PALETTE_MEANS_BLACK_BACKGROUND 1041635329
-+#define WUFFS_GIF__QUIRK_HONOR_BACKGROUND_COLOR 1041635330u
- 
--#define WUFFS_GIF__QUIRK_HONOR_BACKGROUND_COLOR 1041635330
-+#define WUFFS_GIF__QUIRK_IGNORE_TOO_MUCH_PIXEL_DATA 1041635331u
- 
--#define WUFFS_GIF__QUIRK_IGNORE_TOO_MUCH_PIXEL_DATA 1041635331
-+#define WUFFS_GIF__QUIRK_IMAGE_BOUNDS_ARE_STRICT 1041635332u
- 
--#define WUFFS_GIF__QUIRK_IMAGE_BOUNDS_ARE_STRICT 1041635332
-+#define WUFFS_GIF__QUIRK_REJECT_EMPTY_FRAME 1041635333u
- 
--#define WUFFS_GIF__QUIRK_REJECT_EMPTY_FRAME 1041635333
--
--#define WUFFS_GIF__QUIRK_REJECT_EMPTY_PALETTE 1041635334
-+#define WUFFS_GIF__QUIRK_REJECT_EMPTY_PALETTE 1041635334u
- 
- // ---------------- Struct Declarations
- 
-@@ -8518,11 +9074,6 @@ WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
- wuffs_gif__decoder__frame_dirty_rect(
-     const wuffs_gif__decoder* self);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_gif__decoder__history_retain_length(
--    const wuffs_gif__decoder* self);
--
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
- wuffs_gif__decoder__workbuf_len(
-@@ -8627,25 +9178,25 @@ struct wuffs_gif__decoder__struct {
-     uint32_t f_lzw_read_from_return_value;
-     uint16_t f_lzw_prefixes[4096];
- 
--    uint32_t p_decode_image_config[1];
--    uint32_t p_do_decode_image_config[1];
--    uint32_t p_tell_me_more[1];
--    uint32_t p_do_tell_me_more[1];
--    uint32_t p_decode_frame_config[1];
--    uint32_t p_do_decode_frame_config[1];
--    uint32_t p_skip_frame[1];
--    uint32_t p_decode_frame[1];
--    uint32_t p_do_decode_frame[1];
--    uint32_t p_decode_up_to_id_part1[1];
--    uint32_t p_decode_header[1];
--    uint32_t p_decode_lsd[1];
--    uint32_t p_decode_extension[1];
--    uint32_t p_skip_blocks[1];
--    uint32_t p_decode_ae[1];
--    uint32_t p_decode_gc[1];
--    uint32_t p_decode_id_part0[1];
--    uint32_t p_decode_id_part1[1];
--    uint32_t p_decode_id_part2[1];
-+    uint32_t p_decode_image_config;
-+    uint32_t p_do_decode_image_config;
-+    uint32_t p_tell_me_more;
-+    uint32_t p_do_tell_me_more;
-+    uint32_t p_decode_frame_config;
-+    uint32_t p_do_decode_frame_config;
-+    uint32_t p_skip_frame;
-+    uint32_t p_decode_frame;
-+    uint32_t p_do_decode_frame;
-+    uint32_t p_decode_up_to_id_part1;
-+    uint32_t p_decode_header;
-+    uint32_t p_decode_lsd;
-+    uint32_t p_decode_extension;
-+    uint32_t p_skip_blocks;
-+    uint32_t p_decode_ae;
-+    uint32_t p_decode_gc;
-+    uint32_t p_decode_id_part0;
-+    uint32_t p_decode_id_part1;
-+    uint32_t p_decode_id_part2;
-   } private_impl;
- 
-   struct {
-@@ -8658,24 +9209,23 @@ struct wuffs_gif__decoder__struct {
- 
-     struct {
-       uint32_t v_background_color;
--    } s_do_decode_frame_config[1];
-+    } s_do_decode_frame_config;
-     struct {
-       uint64_t scratch;
--    } s_skip_frame[1];
-+    } s_skip_frame;
-     struct {
--      uint8_t v_c[6];
--      uint32_t v_i;
--    } s_decode_header[1];
-+      uint64_t scratch;
-+    } s_decode_header;
-     struct {
-       uint8_t v_flags;
-       uint8_t v_background_color_index;
-       uint32_t v_num_palette_entries;
-       uint32_t v_i;
-       uint64_t scratch;
--    } s_decode_lsd[1];
-+    } s_decode_lsd;
-     struct {
-       uint64_t scratch;
--    } s_skip_blocks[1];
-+    } s_skip_blocks;
-     struct {
-       uint8_t v_block_size;
-       bool v_is_animexts;
-@@ -8683,24 +9233,24 @@ struct wuffs_gif__decoder__struct {
-       bool v_is_iccp;
-       bool v_is_xmp;
-       uint64_t scratch;
--    } s_decode_ae[1];
-+    } s_decode_ae;
-     struct {
-       uint64_t scratch;
--    } s_decode_gc[1];
-+    } s_decode_gc;
-     struct {
-       uint64_t scratch;
--    } s_decode_id_part0[1];
-+    } s_decode_id_part0;
-     struct {
-       uint8_t v_which_palette;
-       uint32_t v_num_palette_entries;
-       uint32_t v_i;
-       uint64_t scratch;
--    } s_decode_id_part1[1];
-+    } s_decode_id_part1;
-     struct {
-       uint64_t v_block_size;
-       bool v_need_block_size;
-       uint64_t scratch;
--    } s_decode_id_part2[1];
-+    } s_decode_id_part2;
-   } private_data;
- 
- #ifdef __cplusplus
-@@ -8820,11 +9370,6 @@ struct wuffs_gif__decoder__struct {
-     return wuffs_gif__decoder__frame_dirty_rect(this);
-   }
- 
--  inline uint64_t
--  history_retain_length() const {
--    return wuffs_gif__decoder__history_retain_length(this);
--  }
--
-   inline wuffs_base__range_ii_u64
-   workbuf_len() const {
-     return wuffs_gif__decoder__workbuf_len(this);
-@@ -8873,9 +9418,9 @@ extern const char wuffs_gzip__error__truncated_input[];
- 
- // ---------------- Public Consts
- 
--#define WUFFS_GZIP__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
-+#define WUFFS_GZIP__DECODER_DST_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0u
- 
--#define WUFFS_GZIP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 1
-+#define WUFFS_GZIP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 1u
- 
- // ---------------- Struct Declarations
- 
-@@ -8943,8 +9488,8 @@ wuffs_gzip__decoder__set_quirk(
-     uint64_t a_value);
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_gzip__decoder__history_retain_length(
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
-+wuffs_gzip__decoder__dst_history_retain_length(
-     const wuffs_gzip__decoder* self);
- 
- WUFFS_BASE__GENERATED_C_CODE
-@@ -8989,8 +9534,8 @@ struct wuffs_gzip__decoder__struct {
- 
-     bool f_ignore_checksum;
- 
--    uint32_t p_transform_io[1];
--    uint32_t p_do_transform_io[1];
-+    uint32_t p_transform_io;
-+    uint32_t p_do_transform_io;
-   } private_impl;
- 
-   struct {
-@@ -8999,11 +9544,11 @@ struct wuffs_gzip__decoder__struct {
- 
-     struct {
-       uint8_t v_flags;
--      uint32_t v_checksum_got;
--      uint32_t v_decoded_length_got;
-+      uint32_t v_checksum_have;
-+      uint32_t v_decoded_length_have;
-       uint32_t v_checksum_want;
-       uint64_t scratch;
--    } s_do_transform_io[1];
-+    } s_do_transform_io;
-   } private_data;
- 
- #ifdef __cplusplus
-@@ -9081,9 +9626,9 @@ struct wuffs_gzip__decoder__struct {
-     return wuffs_gzip__decoder__set_quirk(this, a_key, a_value);
-   }
- 
--  inline uint64_t
--  history_retain_length() const {
--    return wuffs_gzip__decoder__history_retain_length(this);
-+  inline wuffs_base__optional_u63
-+  dst_history_retain_length() const {
-+    return wuffs_gzip__decoder__dst_history_retain_length(this);
-   }
- 
-   inline wuffs_base__range_ii_u64
-@@ -9117,8 +9662,10 @@ extern const char wuffs_jpeg__error__bad_sof_marker[];
- extern const char wuffs_jpeg__error__bad_sos_marker[];
- extern const char wuffs_jpeg__error__bad_header[];
- extern const char wuffs_jpeg__error__bad_marker[];
-+extern const char wuffs_jpeg__error__bad_scan_count[];
- extern const char wuffs_jpeg__error__missing_huffman_table[];
- extern const char wuffs_jpeg__error__missing_quantization_table[];
-+extern const char wuffs_jpeg__error__rejected_progressive_jpeg[];
- extern const char wuffs_jpeg__error__truncated_input[];
- extern const char wuffs_jpeg__error__unsupported_arithmetic_coding[];
- extern const char wuffs_jpeg__error__unsupported_color_model[];
-@@ -9134,9 +9681,9 @@ extern const char wuffs_jpeg__error__unsupported_scan_count[];
- 
- // ---------------- Public Consts
- 
--#define WUFFS_JPEG__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
-+#define WUFFS_JPEG__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 51552191232u
- 
--#define WUFFS_JPEG__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 51552191232
-+#define WUFFS_JPEG__QUIRK_REJECT_PROGRESSIVE_JPEGS 1220532224u
- 
- // ---------------- Struct Declarations
- 
-@@ -9269,11 +9816,6 @@ wuffs_jpeg__decoder__tell_me_more(
-     wuffs_base__more_information* a_minfo,
-     wuffs_base__io_buffer* a_src);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_jpeg__decoder__history_retain_length(
--    const wuffs_jpeg__decoder* self);
--
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
- wuffs_jpeg__decoder__workbuf_len(
-@@ -9368,6 +9910,13 @@ struct wuffs_jpeg__decoder__struct {
-     uint32_t f_bitstream_ri;
-     uint32_t f_bitstream_wi;
-     bool f_bitstream_is_closed;
-+    bool f_expect_multiple_scans;
-+    bool f_use_lower_quality;
-+    bool f_reject_progressive_jpegs;
-+    bool f_swizzle_immediately;
-+    wuffs_base__status f_swizzle_immediately_status;
-+    uint32_t f_swizzle_immediately_b_offsets[10];
-+    uint32_t f_swizzle_immediately_c_offsets[5];
-     uint32_t f_bitstream_padding;
-     uint16_t f_quant_tables[4][64];
-     uint16_t f_saved_quant_tables[4][64];
-@@ -9381,28 +9930,29 @@ struct wuffs_jpeg__decoder__struct {
-         wuffs_base__slice_u8 a_dst_buffer,
-         uint64_t a_dst_stride,
-         uint32_t a_q);
--    uint32_t p_decode_image_config[1];
--    uint32_t p_do_decode_image_config[1];
--    uint32_t p_decode_dqt[1];
--    uint32_t p_decode_dri[1];
--    uint32_t p_decode_appn[1];
--    uint32_t p_decode_sof[1];
--    uint32_t p_decode_frame_config[1];
--    uint32_t p_do_decode_frame_config[1];
--    uint32_t p_decode_frame[1];
--    uint32_t p_do_decode_frame[1];
--    uint32_t p_decode_dht[1];
--    uint32_t p_decode_sos[1];
--    uint32_t p_prepare_scan[1];
-+    uint32_t p_decode_image_config;
-+    uint32_t p_do_decode_image_config;
-+    uint32_t p_decode_dqt;
-+    uint32_t p_decode_dri;
-+    uint32_t p_decode_appn;
-+    uint32_t p_decode_sof;
-+    uint32_t p_decode_frame_config;
-+    uint32_t p_do_decode_frame_config;
-+    uint32_t p_decode_frame;
-+    uint32_t p_do_decode_frame;
-+    uint32_t p_decode_dht;
-+    uint32_t p_decode_sos;
-+    uint32_t p_prepare_scan;
-     wuffs_base__empty_struct (*choosy_load_mcu_blocks_for_single_component)(
-         wuffs_jpeg__decoder* self,
-         uint32_t a_mx,
-         uint32_t a_my,
-         wuffs_base__slice_u8 a_workbuf,
-         uint32_t a_csel);
--    uint32_t p_skip_past_the_next_restart_marker[1];
-+    uint32_t p_skip_past_the_next_restart_marker;
-     uint32_t (*choosy_decode_mcu)(
-         wuffs_jpeg__decoder* self,
-+        wuffs_base__pixel_buffer* a_dst,
-         wuffs_base__slice_u8 a_workbuf,
-         uint32_t a_mx,
-         uint32_t a_my);
-@@ -9411,6 +9961,7 @@ struct wuffs_jpeg__decoder__struct {
-   struct {
-     uint8_t f_bitstream_buffer[2048];
-     uint16_t f_mcu_blocks[10][64];
-+    uint8_t f_swizzle_immediately_buffer[640];
-     uint8_t f_swizzle_ycck_scratch_buffer_2k[2048];
-     uint8_t f_dht_temp_counts[16];
-     uint8_t f_dht_temp_bit_lengths[256];
-@@ -9420,38 +9971,38 @@ struct wuffs_jpeg__decoder__struct {
-     struct {
-       uint8_t v_marker;
-       uint64_t scratch;
--    } s_do_decode_image_config[1];
-+    } s_do_decode_image_config;
-     struct {
-       uint8_t v_q;
-       uint32_t v_i;
--    } s_decode_dqt[1];
-+    } s_decode_dqt;
-     struct {
-       uint64_t scratch;
--    } s_decode_dri[1];
-+    } s_decode_dri;
-     struct {
-       uint64_t scratch;
--    } s_decode_appn[1];
-+    } s_decode_appn;
-     struct {
-       uint32_t v_i;
-       uint64_t scratch;
--    } s_decode_sof[1];
-+    } s_decode_sof;
-     struct {
-       uint8_t v_marker;
-       uint64_t scratch;
--    } s_do_decode_frame[1];
-+    } s_do_decode_frame;
-     struct {
-       uint8_t v_tc4_th;
-       uint32_t v_total_count;
-       uint32_t v_i;
--    } s_decode_dht[1];
-+    } s_decode_dht;
-     struct {
-       uint32_t v_my;
-       uint32_t v_mx;
--    } s_decode_sos[1];
-+    } s_decode_sos;
-     struct {
-       uint32_t v_i;
-       uint64_t scratch;
--    } s_prepare_scan[1];
-+    } s_prepare_scan;
-   } private_data;
- 
- #ifdef __cplusplus
-@@ -9595,11 +10146,6 @@ struct wuffs_jpeg__decoder__struct {
-     return wuffs_jpeg__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
-   }
- 
--  inline uint64_t
--  history_retain_length() const {
--    return wuffs_jpeg__decoder__history_retain_length(this);
--  }
--
-   inline wuffs_base__range_ii_u64
-   workbuf_len() const {
-     return wuffs_jpeg__decoder__workbuf_len(this);
-@@ -9627,55 +10173,53 @@ extern const char wuffs_json__error__unsupported_recursion_depth[];
- 
- // ---------------- Public Consts
- 
--#define WUFFS_JSON__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
--
--#define WUFFS_JSON__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
-+#define WUFFS_JSON__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
- 
--#define WUFFS_JSON__DECODER_DEPTH_MAX_INCL 1024
-+#define WUFFS_JSON__DECODER_DEPTH_MAX_INCL 1024u
- 
--#define WUFFS_JSON__DECODER_DST_TOKEN_BUFFER_LENGTH_MIN_INCL 1
-+#define WUFFS_JSON__DECODER_DST_TOKEN_BUFFER_LENGTH_MIN_INCL 1u
- 
--#define WUFFS_JSON__DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL 100
-+#define WUFFS_JSON__DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL 100u
- 
--#define WUFFS_JSON__QUIRK_ALLOW_ASCII_CONTROL_CODES 1225364480
-+#define WUFFS_JSON__QUIRK_ALLOW_ASCII_CONTROL_CODES 1225364480u
- 
--#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_A 1225364481
-+#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_A 1225364481u
- 
--#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_CAPITAL_U 1225364482
-+#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_CAPITAL_U 1225364482u
- 
--#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_E 1225364483
-+#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_E 1225364483u
- 
--#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_NEW_LINE 1225364484
-+#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_NEW_LINE 1225364484u
- 
--#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_QUESTION_MARK 1225364485
-+#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_QUESTION_MARK 1225364485u
- 
--#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_SINGLE_QUOTE 1225364486
-+#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_SINGLE_QUOTE 1225364486u
- 
--#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_V 1225364487
-+#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_V 1225364487u
- 
--#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_X_AS_CODE_POINTS 1225364489
-+#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_X_AS_CODE_POINTS 1225364489u
- 
--#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_ZERO 1225364490
-+#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_ZERO 1225364490u
- 
--#define WUFFS_JSON__QUIRK_ALLOW_COMMENT_BLOCK 1225364491
-+#define WUFFS_JSON__QUIRK_ALLOW_COMMENT_BLOCK 1225364491u
- 
--#define WUFFS_JSON__QUIRK_ALLOW_COMMENT_LINE 1225364492
-+#define WUFFS_JSON__QUIRK_ALLOW_COMMENT_LINE 1225364492u
- 
--#define WUFFS_JSON__QUIRK_ALLOW_EXTRA_COMMA 1225364493
-+#define WUFFS_JSON__QUIRK_ALLOW_EXTRA_COMMA 1225364493u
- 
--#define WUFFS_JSON__QUIRK_ALLOW_INF_NAN_NUMBERS 1225364494
-+#define WUFFS_JSON__QUIRK_ALLOW_INF_NAN_NUMBERS 1225364494u
- 
--#define WUFFS_JSON__QUIRK_ALLOW_LEADING_ASCII_RECORD_SEPARATOR 1225364495
-+#define WUFFS_JSON__QUIRK_ALLOW_LEADING_ASCII_RECORD_SEPARATOR 1225364495u
- 
--#define WUFFS_JSON__QUIRK_ALLOW_LEADING_UNICODE_BYTE_ORDER_MARK 1225364496
-+#define WUFFS_JSON__QUIRK_ALLOW_LEADING_UNICODE_BYTE_ORDER_MARK 1225364496u
- 
--#define WUFFS_JSON__QUIRK_ALLOW_TRAILING_FILLER 1225364497
-+#define WUFFS_JSON__QUIRK_ALLOW_TRAILING_FILLER 1225364497u
- 
--#define WUFFS_JSON__QUIRK_EXPECT_TRAILING_NEW_LINE_OR_EOF 1225364498
-+#define WUFFS_JSON__QUIRK_EXPECT_TRAILING_NEW_LINE_OR_EOF 1225364498u
- 
--#define WUFFS_JSON__QUIRK_JSON_POINTER_ALLOW_TILDE_N_TILDE_R_TILDE_T 1225364499
-+#define WUFFS_JSON__QUIRK_JSON_POINTER_ALLOW_TILDE_N_TILDE_R_TILDE_T 1225364499u
- 
--#define WUFFS_JSON__QUIRK_REPLACE_INVALID_UNICODE 1225364500
-+#define WUFFS_JSON__QUIRK_REPLACE_INVALID_UNICODE 1225364500u
- 
- // ---------------- Struct Declarations
- 
-@@ -9742,11 +10286,6 @@ wuffs_json__decoder__set_quirk(
-     uint32_t a_key,
-     uint64_t a_value);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_json__decoder__history_retain_length(
--    const wuffs_json__decoder* self);
--
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
- wuffs_json__decoder__workbuf_len(
-@@ -9794,11 +10333,11 @@ struct wuffs_json__decoder__struct {
-     uint8_t f_trailer_stop;
-     uint8_t f_comment_type;
- 
--    uint32_t p_decode_tokens[1];
--    uint32_t p_decode_leading[1];
--    uint32_t p_decode_comment[1];
--    uint32_t p_decode_inf_nan[1];
--    uint32_t p_decode_trailer[1];
-+    uint32_t p_decode_tokens;
-+    uint32_t p_decode_leading;
-+    uint32_t p_decode_comment;
-+    uint32_t p_decode_inf_nan;
-+    uint32_t p_decode_trailer;
-   } private_impl;
- 
-   struct {
-@@ -9808,7 +10347,7 @@ struct wuffs_json__decoder__struct {
-       uint32_t v_depth;
-       uint32_t v_expect;
-       uint32_t v_expect_after_value;
--    } s_decode_tokens[1];
-+    } s_decode_tokens;
-   } private_data;
- 
- #ifdef __cplusplus
-@@ -9886,11 +10425,6 @@ struct wuffs_json__decoder__struct {
-     return wuffs_json__decoder__set_quirk(this, a_key, a_value);
-   }
- 
--  inline uint64_t
--  history_retain_length() const {
--    return wuffs_json__decoder__history_retain_length(this);
--  }
--
-   inline wuffs_base__range_ii_u64
-   workbuf_len() const {
-     return wuffs_json__decoder__workbuf_len(this);
-@@ -9911,24 +10445,33 @@ struct wuffs_json__decoder__struct {
- 
- #endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JSON) || defined(WUFFS_NONMONOLITHIC)
- 
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW) || defined(WUFFS_NONMONOLITHIC)
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZMA) || defined(WUFFS_NONMONOLITHIC)
- 
- // ---------------- Status Codes
- 
--extern const char wuffs_lzw__error__bad_code[];
--extern const char wuffs_lzw__error__truncated_input[];
-+extern const char wuffs_lzma__error__bad_lzma2_header[];
-+extern const char wuffs_lzma__error__bad_bitstream_trailer[];
-+extern const char wuffs_lzma__error__bad_code[];
-+extern const char wuffs_lzma__error__bad_decoded_length[];
-+extern const char wuffs_lzma__error__bad_distance[];
-+extern const char wuffs_lzma__error__bad_header[];
-+extern const char wuffs_lzma__error__truncated_input[];
-+extern const char wuffs_lzma__error__unsupported_decoded_length[];
-+extern const char wuffs_lzma__error__unsupported_properties[];
- 
- // ---------------- Public Consts
- 
--#define WUFFS_LZW__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
-+#define WUFFS_LZMA__DECODER_DST_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0u
- 
--#define WUFFS_LZW__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
-+#define WUFFS_LZMA__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 4294967568u
- 
--#define WUFFS_LZW__QUIRK_LITERAL_WIDTH_PLUS_ONE 1348378624
-+#define WUFFS_LZMA__QUIRK_ALLOW_NON_ZERO_INITIAL_BYTE 1348001792u
-+
-+#define WUFFS_LZMA__QUIRK_FORMAT_EXTENSION 1348001793u
- 
- // ---------------- Struct Declarations
- 
--typedef struct wuffs_lzw__decoder__struct wuffs_lzw__decoder;
-+typedef struct wuffs_lzma__decoder__struct wuffs_lzma__decoder;
- 
- #ifdef __cplusplus
- extern "C" {
-@@ -9943,14 +10486,14 @@ extern "C" {
- // Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
- 
- wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_lzw__decoder__initialize(
--    wuffs_lzw__decoder* self,
-+wuffs_lzma__decoder__initialize(
-+    wuffs_lzma__decoder* self,
-     size_t sizeof_star_self,
-     uint64_t wuffs_version,
-     uint32_t options);
- 
- size_t
--sizeof__wuffs_lzw__decoder(void);
-+sizeof__wuffs_lzma__decoder(void);
- 
- // ---------------- Allocs
- 
-@@ -9960,19 +10503,19 @@ sizeof__wuffs_lzw__decoder(void);
- // calling free on the returned pointer. That pointer is effectively a C++
- // std::unique_ptr<T, wuffs_unique_ptr_deleter>.
- 
--wuffs_lzw__decoder*
--wuffs_lzw__decoder__alloc(void);
-+wuffs_lzma__decoder*
-+wuffs_lzma__decoder__alloc(void);
- 
- static inline wuffs_base__io_transformer*
--wuffs_lzw__decoder__alloc_as__wuffs_base__io_transformer(void) {
--  return (wuffs_base__io_transformer*)(wuffs_lzw__decoder__alloc());
-+wuffs_lzma__decoder__alloc_as__wuffs_base__io_transformer(void) {
-+  return (wuffs_base__io_transformer*)(wuffs_lzma__decoder__alloc());
- }
- 
- // ---------------- Upcasts
- 
- static inline wuffs_base__io_transformer*
--wuffs_lzw__decoder__upcast_as__wuffs_base__io_transformer(
--    wuffs_lzw__decoder* p) {
-+wuffs_lzma__decoder__upcast_as__wuffs_base__io_transformer(
-+    wuffs_lzma__decoder* p) {
-   return (wuffs_base__io_transformer*)p;
- }
- 
-@@ -9980,40 +10523,35 @@ wuffs_lzw__decoder__upcast_as__wuffs_base__io_transformer(
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_lzw__decoder__get_quirk(
--    const wuffs_lzw__decoder* self,
-+wuffs_lzma__decoder__get_quirk(
-+    const wuffs_lzma__decoder* self,
-     uint32_t a_key);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_lzw__decoder__set_quirk(
--    wuffs_lzw__decoder* self,
-+wuffs_lzma__decoder__set_quirk(
-+    wuffs_lzma__decoder* self,
-     uint32_t a_key,
-     uint64_t a_value);
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_lzw__decoder__history_retain_length(
--    const wuffs_lzw__decoder* self);
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
-+wuffs_lzma__decoder__dst_history_retain_length(
-+    const wuffs_lzma__decoder* self);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_lzw__decoder__workbuf_len(
--    const wuffs_lzw__decoder* self);
-+wuffs_lzma__decoder__workbuf_len(
-+    const wuffs_lzma__decoder* self);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_lzw__decoder__transform_io(
--    wuffs_lzw__decoder* self,
-+wuffs_lzma__decoder__transform_io(
-+    wuffs_lzma__decoder* self,
-     wuffs_base__io_buffer* a_dst,
-     wuffs_base__io_buffer* a_src,
-     wuffs_base__slice_u8 a_workbuf);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__slice_u8
--wuffs_lzw__decoder__flush(
--    wuffs_lzw__decoder* self);
--
- #ifdef __cplusplus
- }  // extern "C"
- #endif
-@@ -10027,7 +10565,7 @@ wuffs_lzw__decoder__flush(
- 
- #if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
- 
--struct wuffs_lzw__decoder__struct {
-+struct wuffs_lzma__decoder__struct {
-   // Do not access the private_impl's or private_data's fields directly. There
-   // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
-   // the wuffs_foo__bar__baz functions.
-@@ -10041,45 +10579,113 @@ struct wuffs_lzw__decoder__struct {
-     wuffs_base__vtable vtable_for__wuffs_base__io_transformer;
-     wuffs_base__vtable null_vtable;
- 
--    uint32_t f_pending_literal_width_plus_one;
--    uint32_t f_literal_width;
--    uint32_t f_clear_code;
--    uint32_t f_end_code;
--    uint32_t f_save_code;
--    uint32_t f_prev_code;
--    uint32_t f_width;
--    uint32_t f_bits;
--    uint32_t f_n_bits;
--    uint32_t f_output_ri;
--    uint32_t f_output_wi;
--    uint32_t f_read_from_return_value;
--    uint16_t f_prefixes[4096];
--
--    uint32_t p_transform_io[1];
--    uint32_t p_write_to[1];
-+    uint32_t f_lc;
-+    uint32_t f_lp;
-+    uint32_t f_pb;
-+    uint32_t f_format_extension;
-+    uint32_t f_dict_size;
-+    uint32_t f_dict_workbuf_index;
-+    uint32_t f_dict_seen;
-+    uint64_t f_decoded_length;
-+    uint64_t f_lzma2_encoded_length_have;
-+    uint64_t f_lzma2_encoded_length_want;
-+    bool f_lzma2_need_prob_reset;
-+    bool f_lzma2_need_properties;
-+    bool f_lzma2_need_dict_reset;
-+    bool f_prev_lzma2_chunk_was_uncompressed;
-+    bool f_allow_non_zero_initial_byte;
-+    bool f_end_of_chunk;
-+    uint8_t f_stashed_bytes[2];
-+    uint32_t f_stashed_bits;
-+    uint32_t f_stashed_range;
-+    uint32_t f_stashed_state;
-+    uint32_t f_stashed_rep0;
-+    uint32_t f_stashed_rep1;
-+    uint32_t f_stashed_rep2;
-+    uint32_t f_stashed_rep3;
-+    uint64_t f_stashed_pos;
-+    uint64_t f_stashed_pos_end;
-+
-+    uint32_t p_decode_bitstream_slow;
-+    uint32_t p_transform_io;
-+    uint32_t p_do_transform_io;
-+    uint32_t p_decode_bitstream;
-+    uint32_t p_update_stashed_bytes;
-+    uint32_t p_decode_optional_end_of_stream;
-   } private_impl;
- 
-   struct {
--    uint8_t f_suffixes[4096][8];
--    uint16_t f_lm1s[4096];
--    uint8_t f_output[8199];
-+    uint16_t f_probs_ao00[192];
-+    uint16_t f_probs_ao20[12];
-+    uint16_t f_probs_ao40[12];
-+    uint16_t f_probs_ao41[192];
-+    uint16_t f_probs_ao60[12];
-+    uint16_t f_probs_ao63[12];
-+    uint16_t f_probs_match_len_low[16][8];
-+    uint16_t f_probs_match_len_mid[16][8];
-+    uint16_t f_probs_match_len_high[1][256];
-+    uint16_t f_probs_longrep_len_low[16][8];
-+    uint16_t f_probs_longrep_len_mid[16][8];
-+    uint16_t f_probs_longrep_len_high[1][256];
-+    uint16_t f_probs_slot[4][64];
-+    uint16_t f_probs_small_dist[128];
-+    uint16_t f_probs_large_dist[16];
-+    uint16_t f_probs_lit[16][768];
-+
-+    struct {
-+      uint32_t v_bits;
-+      uint32_t v_range;
-+      uint32_t v_state;
-+      uint32_t v_rep0;
-+      uint32_t v_rep1;
-+      uint32_t v_rep2;
-+      uint32_t v_rep3;
-+      uint32_t v_rep;
-+      uint64_t v_pos;
-+      uint64_t v_pos_end;
-+      uint32_t v_lc;
-+      uint64_t v_lp_mask;
-+      uint64_t v_pb_mask;
-+      uint32_t v_tree_node;
-+      uint8_t v_prev_byte;
-+      uint32_t v_match_byte;
-+      uint32_t v_len_state;
-+      uint32_t v_slot;
-+      uint32_t v_len;
-+      uint32_t v_lanl_offset;
-+      uint32_t v_num_extra_bits;
-+      uint32_t v_dist_extra_bits;
-+      uint32_t v_i;
-+      uint32_t v_index_lit;
-+      uint32_t v_index_len;
-+      uint32_t v_index_small_dist_base;
-+      uint32_t v_index_small_dist_extra;
-+      uint32_t v_index_large_dist;
-+      uint32_t v_dist;
-+      uint64_t scratch;
-+    } s_decode_bitstream_slow;
-+    struct {
-+      uint8_t v_header_byte;
-+      uint32_t v_length;
-+      uint64_t scratch;
-+    } s_do_transform_io;
-   } private_data;
- 
- #ifdef __cplusplus
- #if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
--  using unique_ptr = std::unique_ptr<wuffs_lzw__decoder, wuffs_unique_ptr_deleter>;
-+  using unique_ptr = std::unique_ptr<wuffs_lzma__decoder, wuffs_unique_ptr_deleter>;
- 
-   // On failure, the alloc_etc functions return nullptr. They don't throw.
- 
-   static inline unique_ptr
-   alloc() {
--    return unique_ptr(wuffs_lzw__decoder__alloc());
-+    return unique_ptr(wuffs_lzma__decoder__alloc());
-   }
- 
-   static inline wuffs_base__io_transformer::unique_ptr
-   alloc_as__wuffs_base__io_transformer() {
-     return wuffs_base__io_transformer::unique_ptr(
--        wuffs_lzw__decoder__alloc_as__wuffs_base__io_transformer());
-+        wuffs_lzma__decoder__alloc_as__wuffs_base__io_transformer());
-   }
- #endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
- 
-@@ -10095,10 +10701,10 @@ struct wuffs_lzw__decoder__struct {
-   // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
-   // order to provide convenience methods. These forward on "this", so that you
-   // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
--  wuffs_lzw__decoder__struct() = delete;
--  wuffs_lzw__decoder__struct(const wuffs_lzw__decoder__struct&) = delete;
--  wuffs_lzw__decoder__struct& operator=(
--      const wuffs_lzw__decoder__struct&) = delete;
-+  wuffs_lzma__decoder__struct() = delete;
-+  wuffs_lzma__decoder__struct(const wuffs_lzma__decoder__struct&) = delete;
-+  wuffs_lzma__decoder__struct& operator=(
-+      const wuffs_lzma__decoder__struct&) = delete;
- #endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
- 
- #if !defined(WUFFS_IMPLEMENTATION)
-@@ -10118,7 +10724,7 @@ struct wuffs_lzw__decoder__struct {
-       size_t sizeof_star_self,
-       uint64_t wuffs_version,
-       uint32_t options) {
--    return wuffs_lzw__decoder__initialize(
-+    return wuffs_lzma__decoder__initialize(
-         this, sizeof_star_self, wuffs_version, options);
-   }
- 
-@@ -10130,24 +10736,24 @@ struct wuffs_lzw__decoder__struct {
-   inline uint64_t
-   get_quirk(
-       uint32_t a_key) const {
--    return wuffs_lzw__decoder__get_quirk(this, a_key);
-+    return wuffs_lzma__decoder__get_quirk(this, a_key);
-   }
- 
-   inline wuffs_base__status
-   set_quirk(
-       uint32_t a_key,
-       uint64_t a_value) {
--    return wuffs_lzw__decoder__set_quirk(this, a_key, a_value);
-+    return wuffs_lzma__decoder__set_quirk(this, a_key, a_value);
-   }
- 
--  inline uint64_t
--  history_retain_length() const {
--    return wuffs_lzw__decoder__history_retain_length(this);
-+  inline wuffs_base__optional_u63
-+  dst_history_retain_length() const {
-+    return wuffs_lzma__decoder__dst_history_retain_length(this);
-   }
- 
-   inline wuffs_base__range_ii_u64
-   workbuf_len() const {
--    return wuffs_lzw__decoder__workbuf_len(this);
-+    return wuffs_lzma__decoder__workbuf_len(this);
-   }
- 
-   inline wuffs_base__status
-@@ -10155,38 +10761,34 @@ struct wuffs_lzw__decoder__struct {
-       wuffs_base__io_buffer* a_dst,
-       wuffs_base__io_buffer* a_src,
-       wuffs_base__slice_u8 a_workbuf) {
--    return wuffs_lzw__decoder__transform_io(this, a_dst, a_src, a_workbuf);
--  }
--
--  inline wuffs_base__slice_u8
--  flush() {
--    return wuffs_lzw__decoder__flush(this);
-+    return wuffs_lzma__decoder__transform_io(this, a_dst, a_src, a_workbuf);
-   }
- 
- #endif  // __cplusplus
--};  // struct wuffs_lzw__decoder__struct
-+};  // struct wuffs_lzma__decoder__struct
- 
- #endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW) || defined(WUFFS_NONMONOLITHIC)
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZMA) || defined(WUFFS_NONMONOLITHIC)
- 
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM) || defined(WUFFS_NONMONOLITHIC)
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZIP) || defined(WUFFS_NONMONOLITHIC)
- 
- // ---------------- Status Codes
- 
--extern const char wuffs_netpbm__error__bad_header[];
--extern const char wuffs_netpbm__error__truncated_input[];
--extern const char wuffs_netpbm__error__unsupported_netpbm_file[];
-+extern const char wuffs_lzip__error__bad_checksum[];
-+extern const char wuffs_lzip__error__bad_footer[];
-+extern const char wuffs_lzip__error__bad_header[];
-+extern const char wuffs_lzip__error__truncated_input[];
- 
- // ---------------- Public Consts
- 
--#define WUFFS_NETPBM__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
-+#define WUFFS_LZIP__DECODER_DST_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0u
- 
--#define WUFFS_NETPBM__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
-+#define WUFFS_LZIP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 4294967568u
- 
- // ---------------- Struct Declarations
- 
--typedef struct wuffs_netpbm__decoder__struct wuffs_netpbm__decoder;
-+typedef struct wuffs_lzip__decoder__struct wuffs_lzip__decoder;
- 
- #ifdef __cplusplus
- extern "C" {
-@@ -10201,14 +10803,14 @@ extern "C" {
- // Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
- 
- wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_netpbm__decoder__initialize(
--    wuffs_netpbm__decoder* self,
-+wuffs_lzip__decoder__initialize(
-+    wuffs_lzip__decoder* self,
-     size_t sizeof_star_self,
-     uint64_t wuffs_version,
-     uint32_t options);
- 
- size_t
--sizeof__wuffs_netpbm__decoder(void);
-+sizeof__wuffs_lzip__decoder(void);
- 
- // ---------------- Allocs
- 
-@@ -10218,112 +10820,54 @@ sizeof__wuffs_netpbm__decoder(void);
- // calling free on the returned pointer. That pointer is effectively a C++
- // std::unique_ptr<T, wuffs_unique_ptr_deleter>.
- 
--wuffs_netpbm__decoder*
--wuffs_netpbm__decoder__alloc(void);
-+wuffs_lzip__decoder*
-+wuffs_lzip__decoder__alloc(void);
- 
--static inline wuffs_base__image_decoder*
--wuffs_netpbm__decoder__alloc_as__wuffs_base__image_decoder(void) {
--  return (wuffs_base__image_decoder*)(wuffs_netpbm__decoder__alloc());
-+static inline wuffs_base__io_transformer*
-+wuffs_lzip__decoder__alloc_as__wuffs_base__io_transformer(void) {
-+  return (wuffs_base__io_transformer*)(wuffs_lzip__decoder__alloc());
- }
- 
- // ---------------- Upcasts
- 
--static inline wuffs_base__image_decoder*
--wuffs_netpbm__decoder__upcast_as__wuffs_base__image_decoder(
--    wuffs_netpbm__decoder* p) {
--  return (wuffs_base__image_decoder*)p;
-+static inline wuffs_base__io_transformer*
-+wuffs_lzip__decoder__upcast_as__wuffs_base__io_transformer(
-+    wuffs_lzip__decoder* p) {
-+  return (wuffs_base__io_transformer*)p;
- }
- 
- // ---------------- Public Function Prototypes
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_netpbm__decoder__get_quirk(
--    const wuffs_netpbm__decoder* self,
-+wuffs_lzip__decoder__get_quirk(
-+    const wuffs_lzip__decoder* self,
-     uint32_t a_key);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_netpbm__decoder__set_quirk(
--    wuffs_netpbm__decoder* self,
-+wuffs_lzip__decoder__set_quirk(
-+    wuffs_lzip__decoder* self,
-     uint32_t a_key,
-     uint64_t a_value);
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_netpbm__decoder__decode_image_config(
--    wuffs_netpbm__decoder* self,
--    wuffs_base__image_config* a_dst,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_netpbm__decoder__decode_frame_config(
--    wuffs_netpbm__decoder* self,
--    wuffs_base__frame_config* a_dst,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_netpbm__decoder__decode_frame(
--    wuffs_netpbm__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts);
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
--wuffs_netpbm__decoder__frame_dirty_rect(
--    const wuffs_netpbm__decoder* self);
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_netpbm__decoder__num_animation_loops(
--    const wuffs_netpbm__decoder* self);
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_netpbm__decoder__num_decoded_frame_configs(
--    const wuffs_netpbm__decoder* self);
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_netpbm__decoder__num_decoded_frames(
--    const wuffs_netpbm__decoder* self);
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_netpbm__decoder__restart_frame(
--    wuffs_netpbm__decoder* self,
--    uint64_t a_index,
--    uint64_t a_io_position);
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
-+wuffs_lzip__decoder__dst_history_retain_length(
-+    const wuffs_lzip__decoder* self);
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_netpbm__decoder__set_report_metadata(
--    wuffs_netpbm__decoder* self,
--    uint32_t a_fourcc,
--    bool a_report);
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_lzip__decoder__workbuf_len(
-+    const wuffs_lzip__decoder* self);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_netpbm__decoder__tell_me_more(
--    wuffs_netpbm__decoder* self,
-+wuffs_lzip__decoder__transform_io(
-+    wuffs_lzip__decoder* self,
-     wuffs_base__io_buffer* a_dst,
--    wuffs_base__more_information* a_minfo,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_netpbm__decoder__history_retain_length(
--    const wuffs_netpbm__decoder* self);
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_netpbm__decoder__workbuf_len(
--    const wuffs_netpbm__decoder* self);
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf);
- 
- #ifdef __cplusplus
- }  // extern "C"
-@@ -10338,7 +10882,7 @@ wuffs_netpbm__decoder__workbuf_len(
- 
- #if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
- 
--struct wuffs_netpbm__decoder__struct {
-+struct wuffs_lzip__decoder__struct {
-   // Do not access the private_impl's or private_data's fields directly. There
-   // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
-   // the wuffs_foo__bar__baz functions.
-@@ -10349,42 +10893,41 @@ struct wuffs_netpbm__decoder__struct {
-   struct {
-     uint32_t magic;
-     uint32_t active_coroutine;
--    wuffs_base__vtable vtable_for__wuffs_base__image_decoder;
-+    wuffs_base__vtable vtable_for__wuffs_base__io_transformer;
-     wuffs_base__vtable null_vtable;
- 
--    uint32_t f_pixfmt;
--    uint32_t f_width;
--    uint32_t f_height;
--    uint32_t f_max_value;
--    uint8_t f_call_sequence;
--    uint64_t f_frame_config_io_position;
--    uint32_t f_dst_x;
--    uint32_t f_dst_y;
--    wuffs_base__pixel_swizzler f_swizzler;
-+    bool f_ignore_checksum;
-+    uint64_t f_dsize_have;
-+    uint64_t f_ssize_have;
- 
--    uint32_t p_decode_image_config[1];
--    uint32_t p_do_decode_image_config[1];
--    uint32_t p_decode_frame_config[1];
--    uint32_t p_do_decode_frame_config[1];
--    uint32_t p_decode_frame[1];
--    uint32_t p_do_decode_frame[1];
-+    uint32_t p_transform_io;
-+    uint32_t p_do_transform_io;
-   } private_impl;
- 
-+  struct {
-+    wuffs_crc32__ieee_hasher f_crc32;
-+    wuffs_lzma__decoder f_lzma;
-+
-+    struct {
-+      uint64_t scratch;
-+    } s_do_transform_io;
-+  } private_data;
-+
- #ifdef __cplusplus
- #if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
--  using unique_ptr = std::unique_ptr<wuffs_netpbm__decoder, wuffs_unique_ptr_deleter>;
-+  using unique_ptr = std::unique_ptr<wuffs_lzip__decoder, wuffs_unique_ptr_deleter>;
- 
-   // On failure, the alloc_etc functions return nullptr. They don't throw.
- 
-   static inline unique_ptr
-   alloc() {
--    return unique_ptr(wuffs_netpbm__decoder__alloc());
-+    return unique_ptr(wuffs_lzip__decoder__alloc());
-   }
- 
--  static inline wuffs_base__image_decoder::unique_ptr
--  alloc_as__wuffs_base__image_decoder() {
--    return wuffs_base__image_decoder::unique_ptr(
--        wuffs_netpbm__decoder__alloc_as__wuffs_base__image_decoder());
-+  static inline wuffs_base__io_transformer::unique_ptr
-+  alloc_as__wuffs_base__io_transformer() {
-+    return wuffs_base__io_transformer::unique_ptr(
-+        wuffs_lzip__decoder__alloc_as__wuffs_base__io_transformer());
-   }
- #endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
- 
-@@ -10400,10 +10943,10 @@ struct wuffs_netpbm__decoder__struct {
-   // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
-   // order to provide convenience methods. These forward on "this", so that you
-   // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
--  wuffs_netpbm__decoder__struct() = delete;
--  wuffs_netpbm__decoder__struct(const wuffs_netpbm__decoder__struct&) = delete;
--  wuffs_netpbm__decoder__struct& operator=(
--      const wuffs_netpbm__decoder__struct&) = delete;
-+  wuffs_lzip__decoder__struct() = delete;
-+  wuffs_lzip__decoder__struct(const wuffs_lzip__decoder__struct&) = delete;
-+  wuffs_lzip__decoder__struct& operator=(
-+      const wuffs_lzip__decoder__struct&) = delete;
- #endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
- 
- #if !defined(WUFFS_IMPLEMENTATION)
-@@ -10423,128 +10966,327 @@ struct wuffs_netpbm__decoder__struct {
-       size_t sizeof_star_self,
-       uint64_t wuffs_version,
-       uint32_t options) {
--    return wuffs_netpbm__decoder__initialize(
-+    return wuffs_lzip__decoder__initialize(
-         this, sizeof_star_self, wuffs_version, options);
-   }
- 
--  inline wuffs_base__image_decoder*
--  upcast_as__wuffs_base__image_decoder() {
--    return (wuffs_base__image_decoder*)this;
-+  inline wuffs_base__io_transformer*
-+  upcast_as__wuffs_base__io_transformer() {
-+    return (wuffs_base__io_transformer*)this;
-   }
- 
-   inline uint64_t
-   get_quirk(
-       uint32_t a_key) const {
--    return wuffs_netpbm__decoder__get_quirk(this, a_key);
-+    return wuffs_lzip__decoder__get_quirk(this, a_key);
-   }
- 
-   inline wuffs_base__status
-   set_quirk(
-       uint32_t a_key,
-       uint64_t a_value) {
--    return wuffs_netpbm__decoder__set_quirk(this, a_key, a_value);
-+    return wuffs_lzip__decoder__set_quirk(this, a_key, a_value);
-   }
- 
--  inline wuffs_base__status
--  decode_image_config(
--      wuffs_base__image_config* a_dst,
--      wuffs_base__io_buffer* a_src) {
--    return wuffs_netpbm__decoder__decode_image_config(this, a_dst, a_src);
-+  inline wuffs_base__optional_u63
-+  dst_history_retain_length() const {
-+    return wuffs_lzip__decoder__dst_history_retain_length(this);
-   }
- 
--  inline wuffs_base__status
--  decode_frame_config(
--      wuffs_base__frame_config* a_dst,
--      wuffs_base__io_buffer* a_src) {
--    return wuffs_netpbm__decoder__decode_frame_config(this, a_dst, a_src);
-+  inline wuffs_base__range_ii_u64
-+  workbuf_len() const {
-+    return wuffs_lzip__decoder__workbuf_len(this);
-   }
- 
-   inline wuffs_base__status
--  decode_frame(
--      wuffs_base__pixel_buffer* a_dst,
-+  transform_io(
-+      wuffs_base__io_buffer* a_dst,
-       wuffs_base__io_buffer* a_src,
--      wuffs_base__pixel_blend a_blend,
--      wuffs_base__slice_u8 a_workbuf,
--      wuffs_base__decode_frame_options* a_opts) {
--    return wuffs_netpbm__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
--  }
--
--  inline wuffs_base__rect_ie_u32
--  frame_dirty_rect() const {
--    return wuffs_netpbm__decoder__frame_dirty_rect(this);
-+      wuffs_base__slice_u8 a_workbuf) {
-+    return wuffs_lzip__decoder__transform_io(this, a_dst, a_src, a_workbuf);
-   }
- 
--  inline uint32_t
--  num_animation_loops() const {
--    return wuffs_netpbm__decoder__num_animation_loops(this);
--  }
-+#endif  // __cplusplus
-+};  // struct wuffs_lzip__decoder__struct
- 
--  inline uint64_t
--  num_decoded_frame_configs() const {
--    return wuffs_netpbm__decoder__num_decoded_frame_configs(this);
--  }
-+#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
- 
--  inline uint64_t
--  num_decoded_frames() const {
--    return wuffs_netpbm__decoder__num_decoded_frames(this);
--  }
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZIP) || defined(WUFFS_NONMONOLITHIC)
- 
--  inline wuffs_base__status
--  restart_frame(
--      uint64_t a_index,
--      uint64_t a_io_position) {
--    return wuffs_netpbm__decoder__restart_frame(this, a_index, a_io_position);
--  }
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW) || defined(WUFFS_NONMONOLITHIC)
- 
--  inline wuffs_base__empty_struct
--  set_report_metadata(
--      uint32_t a_fourcc,
--      bool a_report) {
--    return wuffs_netpbm__decoder__set_report_metadata(this, a_fourcc, a_report);
--  }
-+// ---------------- Status Codes
- 
--  inline wuffs_base__status
--  tell_me_more(
--      wuffs_base__io_buffer* a_dst,
--      wuffs_base__more_information* a_minfo,
--      wuffs_base__io_buffer* a_src) {
--    return wuffs_netpbm__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
--  }
-+extern const char wuffs_lzw__error__bad_code[];
-+extern const char wuffs_lzw__error__truncated_input[];
- 
--  inline uint64_t
--  history_retain_length() const {
--    return wuffs_netpbm__decoder__history_retain_length(this);
--  }
-+// ---------------- Public Consts
- 
--  inline wuffs_base__range_ii_u64
--  workbuf_len() const {
--    return wuffs_netpbm__decoder__workbuf_len(this);
--  }
-+#define WUFFS_LZW__DECODER_DST_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0u
- 
--#endif  // __cplusplus
--};  // struct wuffs_netpbm__decoder__struct
-+#define WUFFS_LZW__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
- 
--#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
-+#define WUFFS_LZW__QUIRK_LITERAL_WIDTH_PLUS_ONE 1348378624u
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM) || defined(WUFFS_NONMONOLITHIC)
-+// ---------------- Struct Declarations
- 
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE) || defined(WUFFS_NONMONOLITHIC)
-+typedef struct wuffs_lzw__decoder__struct wuffs_lzw__decoder;
- 
--// ---------------- Status Codes
-+#ifdef __cplusplus
-+extern "C" {
-+#endif
- 
--extern const char wuffs_nie__error__bad_header[];
--extern const char wuffs_nie__error__truncated_input[];
--extern const char wuffs_nie__error__unsupported_nie_file[];
-+// ---------------- Public Initializer Prototypes
- 
--// ---------------- Public Consts
-+// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
-+// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
-+//
-+// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
-+// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_lzw__decoder__initialize(
-+    wuffs_lzw__decoder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options);
-+
-+size_t
-+sizeof__wuffs_lzw__decoder(void);
-+
-+// ---------------- Allocs
-+
-+// These functions allocate and initialize Wuffs structs. They return NULL if
-+// memory allocation fails. If they return non-NULL, there is no need to call
-+// wuffs_foo__bar__initialize, but the caller is responsible for eventually
-+// calling free on the returned pointer. That pointer is effectively a C++
-+// std::unique_ptr<T, wuffs_unique_ptr_deleter>.
-+
-+wuffs_lzw__decoder*
-+wuffs_lzw__decoder__alloc(void);
-+
-+static inline wuffs_base__io_transformer*
-+wuffs_lzw__decoder__alloc_as__wuffs_base__io_transformer(void) {
-+  return (wuffs_base__io_transformer*)(wuffs_lzw__decoder__alloc());
-+}
-+
-+// ---------------- Upcasts
-+
-+static inline wuffs_base__io_transformer*
-+wuffs_lzw__decoder__upcast_as__wuffs_base__io_transformer(
-+    wuffs_lzw__decoder* p) {
-+  return (wuffs_base__io_transformer*)p;
-+}
-+
-+// ---------------- Public Function Prototypes
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_lzw__decoder__get_quirk(
-+    const wuffs_lzw__decoder* self,
-+    uint32_t a_key);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_lzw__decoder__set_quirk(
-+    wuffs_lzw__decoder* self,
-+    uint32_t a_key,
-+    uint64_t a_value);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
-+wuffs_lzw__decoder__dst_history_retain_length(
-+    const wuffs_lzw__decoder* self);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_lzw__decoder__workbuf_len(
-+    const wuffs_lzw__decoder* self);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_lzw__decoder__transform_io(
-+    wuffs_lzw__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__slice_u8
-+wuffs_lzw__decoder__flush(
-+    wuffs_lzw__decoder* self);
-+
-+#ifdef __cplusplus
-+}  // extern "C"
-+#endif
-+
-+// ---------------- Struct Definitions
-+
-+// These structs' fields, and the sizeof them, are private implementation
-+// details that aren't guaranteed to be stable across Wuffs versions.
-+//
-+// See https://en.wikipedia.org/wiki/Opaque_pointer#C
-+
-+#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
-+
-+struct wuffs_lzw__decoder__struct {
-+  // Do not access the private_impl's or private_data's fields directly. There
-+  // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
-+  // the wuffs_foo__bar__baz functions.
-+  //
-+  // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
-+  // can be stack allocated when WUFFS_IMPLEMENTATION is defined.
-+
-+  struct {
-+    uint32_t magic;
-+    uint32_t active_coroutine;
-+    wuffs_base__vtable vtable_for__wuffs_base__io_transformer;
-+    wuffs_base__vtable null_vtable;
-+
-+    uint32_t f_pending_literal_width_plus_one;
-+    uint32_t f_literal_width;
-+    uint32_t f_clear_code;
-+    uint32_t f_end_code;
-+    uint32_t f_save_code;
-+    uint32_t f_prev_code;
-+    uint32_t f_width;
-+    uint32_t f_bits;
-+    uint32_t f_n_bits;
-+    uint32_t f_output_ri;
-+    uint32_t f_output_wi;
-+    uint32_t f_read_from_return_value;
-+    uint16_t f_prefixes[4096];
-+
-+    uint32_t p_transform_io;
-+    uint32_t p_write_to;
-+  } private_impl;
-+
-+  struct {
-+    uint8_t f_suffixes[4096][8];
-+    uint16_t f_lm1s[4096];
-+    uint8_t f_output[8199];
-+  } private_data;
-+
-+#ifdef __cplusplus
-+#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
-+  using unique_ptr = std::unique_ptr<wuffs_lzw__decoder, wuffs_unique_ptr_deleter>;
-+
-+  // On failure, the alloc_etc functions return nullptr. They don't throw.
-+
-+  static inline unique_ptr
-+  alloc() {
-+    return unique_ptr(wuffs_lzw__decoder__alloc());
-+  }
-+
-+  static inline wuffs_base__io_transformer::unique_ptr
-+  alloc_as__wuffs_base__io_transformer() {
-+    return wuffs_base__io_transformer::unique_ptr(
-+        wuffs_lzw__decoder__alloc_as__wuffs_base__io_transformer());
-+  }
-+#endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
-+
-+#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
-+  // Disallow constructing or copying an object via standard C++ mechanisms,
-+  // e.g. the "new" operator, as this struct is intentionally opaque. Its total
-+  // size and field layout is not part of the public, stable, memory-safe API.
-+  // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
-+  // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
-+  // their first argument) rather than tweaking bar.private_impl.qux fields.
-+  //
-+  // In C, we can just leave wuffs_foo__bar as an incomplete type (unless
-+  // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
-+  // order to provide convenience methods. These forward on "this", so that you
-+  // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
-+  wuffs_lzw__decoder__struct() = delete;
-+  wuffs_lzw__decoder__struct(const wuffs_lzw__decoder__struct&) = delete;
-+  wuffs_lzw__decoder__struct& operator=(
-+      const wuffs_lzw__decoder__struct&) = delete;
-+#endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
-+
-+#if !defined(WUFFS_IMPLEMENTATION)
-+  // As above, the size of the struct is not part of the public API, and unless
-+  // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
-+  // allocated, not stack allocated. Its size is not intended to be known at
-+  // compile time, but it is unfortunately divulged as a side effect of
-+  // defining C++ convenience methods. Use "sizeof__T()", calling the function,
-+  // instead of "sizeof T", invoking the operator. To make the two values
-+  // different, so that passing the latter will be rejected by the initialize
-+  // function, we add an arbitrary amount of dead weight.
-+  uint8_t dead_weight[123000000];  // 123 MB.
-+#endif  // !defined(WUFFS_IMPLEMENTATION)
-+
-+  inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+  initialize(
-+      size_t sizeof_star_self,
-+      uint64_t wuffs_version,
-+      uint32_t options) {
-+    return wuffs_lzw__decoder__initialize(
-+        this, sizeof_star_self, wuffs_version, options);
-+  }
-+
-+  inline wuffs_base__io_transformer*
-+  upcast_as__wuffs_base__io_transformer() {
-+    return (wuffs_base__io_transformer*)this;
-+  }
-+
-+  inline uint64_t
-+  get_quirk(
-+      uint32_t a_key) const {
-+    return wuffs_lzw__decoder__get_quirk(this, a_key);
-+  }
-+
-+  inline wuffs_base__status
-+  set_quirk(
-+      uint32_t a_key,
-+      uint64_t a_value) {
-+    return wuffs_lzw__decoder__set_quirk(this, a_key, a_value);
-+  }
-+
-+  inline wuffs_base__optional_u63
-+  dst_history_retain_length() const {
-+    return wuffs_lzw__decoder__dst_history_retain_length(this);
-+  }
-+
-+  inline wuffs_base__range_ii_u64
-+  workbuf_len() const {
-+    return wuffs_lzw__decoder__workbuf_len(this);
-+  }
-+
-+  inline wuffs_base__status
-+  transform_io(
-+      wuffs_base__io_buffer* a_dst,
-+      wuffs_base__io_buffer* a_src,
-+      wuffs_base__slice_u8 a_workbuf) {
-+    return wuffs_lzw__decoder__transform_io(this, a_dst, a_src, a_workbuf);
-+  }
-+
-+  inline wuffs_base__slice_u8
-+  flush() {
-+    return wuffs_lzw__decoder__flush(this);
-+  }
-+
-+#endif  // __cplusplus
-+};  // struct wuffs_lzw__decoder__struct
-+
-+#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
-+
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW) || defined(WUFFS_NONMONOLITHIC)
-+
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM) || defined(WUFFS_NONMONOLITHIC)
-+
-+// ---------------- Status Codes
-+
-+extern const char wuffs_netpbm__error__bad_header[];
-+extern const char wuffs_netpbm__error__truncated_input[];
-+extern const char wuffs_netpbm__error__unsupported_netpbm_file[];
- 
--#define WUFFS_NIE__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
-+// ---------------- Public Consts
- 
--#define WUFFS_NIE__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
-+#define WUFFS_NETPBM__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
- 
- // ---------------- Struct Declarations
- 
--typedef struct wuffs_nie__decoder__struct wuffs_nie__decoder;
-+typedef struct wuffs_netpbm__decoder__struct wuffs_netpbm__decoder;
- 
- #ifdef __cplusplus
- extern "C" {
-@@ -10559,14 +11301,14 @@ extern "C" {
- // Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
- 
- wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_nie__decoder__initialize(
--    wuffs_nie__decoder* self,
-+wuffs_netpbm__decoder__initialize(
-+    wuffs_netpbm__decoder* self,
-     size_t sizeof_star_self,
-     uint64_t wuffs_version,
-     uint32_t options);
- 
- size_t
--sizeof__wuffs_nie__decoder(void);
-+sizeof__wuffs_netpbm__decoder(void);
- 
- // ---------------- Allocs
- 
-@@ -10576,19 +11318,19 @@ sizeof__wuffs_nie__decoder(void);
- // calling free on the returned pointer. That pointer is effectively a C++
- // std::unique_ptr<T, wuffs_unique_ptr_deleter>.
- 
--wuffs_nie__decoder*
--wuffs_nie__decoder__alloc(void);
-+wuffs_netpbm__decoder*
-+wuffs_netpbm__decoder__alloc(void);
- 
- static inline wuffs_base__image_decoder*
--wuffs_nie__decoder__alloc_as__wuffs_base__image_decoder(void) {
--  return (wuffs_base__image_decoder*)(wuffs_nie__decoder__alloc());
-+wuffs_netpbm__decoder__alloc_as__wuffs_base__image_decoder(void) {
-+  return (wuffs_base__image_decoder*)(wuffs_netpbm__decoder__alloc());
- }
- 
- // ---------------- Upcasts
- 
- static inline wuffs_base__image_decoder*
--wuffs_nie__decoder__upcast_as__wuffs_base__image_decoder(
--    wuffs_nie__decoder* p) {
-+wuffs_netpbm__decoder__upcast_as__wuffs_base__image_decoder(
-+    wuffs_netpbm__decoder* p) {
-   return (wuffs_base__image_decoder*)p;
- }
- 
-@@ -10596,35 +11338,35 @@ wuffs_nie__decoder__upcast_as__wuffs_base__image_decoder(
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_nie__decoder__get_quirk(
--    const wuffs_nie__decoder* self,
-+wuffs_netpbm__decoder__get_quirk(
-+    const wuffs_netpbm__decoder* self,
-     uint32_t a_key);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_nie__decoder__set_quirk(
--    wuffs_nie__decoder* self,
-+wuffs_netpbm__decoder__set_quirk(
-+    wuffs_netpbm__decoder* self,
-     uint32_t a_key,
-     uint64_t a_value);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_nie__decoder__decode_image_config(
--    wuffs_nie__decoder* self,
-+wuffs_netpbm__decoder__decode_image_config(
-+    wuffs_netpbm__decoder* self,
-     wuffs_base__image_config* a_dst,
-     wuffs_base__io_buffer* a_src);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_nie__decoder__decode_frame_config(
--    wuffs_nie__decoder* self,
-+wuffs_netpbm__decoder__decode_frame_config(
-+    wuffs_netpbm__decoder* self,
-     wuffs_base__frame_config* a_dst,
-     wuffs_base__io_buffer* a_src);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_nie__decoder__decode_frame(
--    wuffs_nie__decoder* self,
-+wuffs_netpbm__decoder__decode_frame(
-+    wuffs_netpbm__decoder* self,
-     wuffs_base__pixel_buffer* a_dst,
-     wuffs_base__io_buffer* a_src,
-     wuffs_base__pixel_blend a_blend,
-@@ -10633,55 +11375,50 @@ wuffs_nie__decoder__decode_frame(
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
--wuffs_nie__decoder__frame_dirty_rect(
--    const wuffs_nie__decoder* self);
-+wuffs_netpbm__decoder__frame_dirty_rect(
-+    const wuffs_netpbm__decoder* self);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_nie__decoder__num_animation_loops(
--    const wuffs_nie__decoder* self);
-+wuffs_netpbm__decoder__num_animation_loops(
-+    const wuffs_netpbm__decoder* self);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_nie__decoder__num_decoded_frame_configs(
--    const wuffs_nie__decoder* self);
-+wuffs_netpbm__decoder__num_decoded_frame_configs(
-+    const wuffs_netpbm__decoder* self);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_nie__decoder__num_decoded_frames(
--    const wuffs_nie__decoder* self);
-+wuffs_netpbm__decoder__num_decoded_frames(
-+    const wuffs_netpbm__decoder* self);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_nie__decoder__restart_frame(
--    wuffs_nie__decoder* self,
-+wuffs_netpbm__decoder__restart_frame(
-+    wuffs_netpbm__decoder* self,
-     uint64_t a_index,
-     uint64_t a_io_position);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_nie__decoder__set_report_metadata(
--    wuffs_nie__decoder* self,
-+wuffs_netpbm__decoder__set_report_metadata(
-+    wuffs_netpbm__decoder* self,
-     uint32_t a_fourcc,
-     bool a_report);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_nie__decoder__tell_me_more(
--    wuffs_nie__decoder* self,
-+wuffs_netpbm__decoder__tell_me_more(
-+    wuffs_netpbm__decoder* self,
-     wuffs_base__io_buffer* a_dst,
-     wuffs_base__more_information* a_minfo,
-     wuffs_base__io_buffer* a_src);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_nie__decoder__history_retain_length(
--    const wuffs_nie__decoder* self);
--
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_nie__decoder__workbuf_len(
--    const wuffs_nie__decoder* self);
-+wuffs_netpbm__decoder__workbuf_len(
-+    const wuffs_netpbm__decoder* self);
- 
- #ifdef __cplusplus
- }  // extern "C"
-@@ -10696,7 +11433,7 @@ wuffs_nie__decoder__workbuf_len(
- 
- #if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
- 
--struct wuffs_nie__decoder__struct {
-+struct wuffs_netpbm__decoder__struct {
-   // Do not access the private_impl's or private_data's fields directly. There
-   // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
-   // the wuffs_foo__bar__baz functions.
-@@ -10713,40 +11450,36 @@ struct wuffs_nie__decoder__struct {
-     uint32_t f_pixfmt;
-     uint32_t f_width;
-     uint32_t f_height;
-+    uint32_t f_max_value;
-     uint8_t f_call_sequence;
-+    uint64_t f_frame_config_io_position;
-     uint32_t f_dst_x;
-     uint32_t f_dst_y;
-     wuffs_base__pixel_swizzler f_swizzler;
- 
--    uint32_t p_decode_image_config[1];
--    uint32_t p_do_decode_image_config[1];
--    uint32_t p_decode_frame_config[1];
--    uint32_t p_do_decode_frame_config[1];
--    uint32_t p_decode_frame[1];
--    uint32_t p_do_decode_frame[1];
-+    uint32_t p_decode_image_config;
-+    uint32_t p_do_decode_image_config;
-+    uint32_t p_decode_frame_config;
-+    uint32_t p_do_decode_frame_config;
-+    uint32_t p_decode_frame;
-+    uint32_t p_do_decode_frame;
-   } private_impl;
- 
--  struct {
--    struct {
--      uint64_t scratch;
--    } s_do_decode_image_config[1];
--  } private_data;
--
- #ifdef __cplusplus
- #if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
--  using unique_ptr = std::unique_ptr<wuffs_nie__decoder, wuffs_unique_ptr_deleter>;
-+  using unique_ptr = std::unique_ptr<wuffs_netpbm__decoder, wuffs_unique_ptr_deleter>;
- 
-   // On failure, the alloc_etc functions return nullptr. They don't throw.
- 
-   static inline unique_ptr
-   alloc() {
--    return unique_ptr(wuffs_nie__decoder__alloc());
-+    return unique_ptr(wuffs_netpbm__decoder__alloc());
-   }
- 
-   static inline wuffs_base__image_decoder::unique_ptr
-   alloc_as__wuffs_base__image_decoder() {
-     return wuffs_base__image_decoder::unique_ptr(
--        wuffs_nie__decoder__alloc_as__wuffs_base__image_decoder());
-+        wuffs_netpbm__decoder__alloc_as__wuffs_base__image_decoder());
-   }
- #endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
- 
-@@ -10762,10 +11495,10 @@ struct wuffs_nie__decoder__struct {
-   // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
-   // order to provide convenience methods. These forward on "this", so that you
-   // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
--  wuffs_nie__decoder__struct() = delete;
--  wuffs_nie__decoder__struct(const wuffs_nie__decoder__struct&) = delete;
--  wuffs_nie__decoder__struct& operator=(
--      const wuffs_nie__decoder__struct&) = delete;
-+  wuffs_netpbm__decoder__struct() = delete;
-+  wuffs_netpbm__decoder__struct(const wuffs_netpbm__decoder__struct&) = delete;
-+  wuffs_netpbm__decoder__struct& operator=(
-+      const wuffs_netpbm__decoder__struct&) = delete;
- #endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
- 
- #if !defined(WUFFS_IMPLEMENTATION)
-@@ -10785,7 +11518,7 @@ struct wuffs_nie__decoder__struct {
-       size_t sizeof_star_self,
-       uint64_t wuffs_version,
-       uint32_t options) {
--    return wuffs_nie__decoder__initialize(
-+    return wuffs_netpbm__decoder__initialize(
-         this, sizeof_star_self, wuffs_version, options);
-   }
- 
-@@ -10797,28 +11530,28 @@ struct wuffs_nie__decoder__struct {
-   inline uint64_t
-   get_quirk(
-       uint32_t a_key) const {
--    return wuffs_nie__decoder__get_quirk(this, a_key);
-+    return wuffs_netpbm__decoder__get_quirk(this, a_key);
-   }
- 
-   inline wuffs_base__status
-   set_quirk(
-       uint32_t a_key,
-       uint64_t a_value) {
--    return wuffs_nie__decoder__set_quirk(this, a_key, a_value);
-+    return wuffs_netpbm__decoder__set_quirk(this, a_key, a_value);
-   }
- 
-   inline wuffs_base__status
-   decode_image_config(
-       wuffs_base__image_config* a_dst,
-       wuffs_base__io_buffer* a_src) {
--    return wuffs_nie__decoder__decode_image_config(this, a_dst, a_src);
-+    return wuffs_netpbm__decoder__decode_image_config(this, a_dst, a_src);
-   }
- 
-   inline wuffs_base__status
-   decode_frame_config(
-       wuffs_base__frame_config* a_dst,
-       wuffs_base__io_buffer* a_src) {
--    return wuffs_nie__decoder__decode_frame_config(this, a_dst, a_src);
-+    return wuffs_netpbm__decoder__decode_frame_config(this, a_dst, a_src);
-   }
- 
-   inline wuffs_base__status
-@@ -10828,41 +11561,41 @@ struct wuffs_nie__decoder__struct {
-       wuffs_base__pixel_blend a_blend,
-       wuffs_base__slice_u8 a_workbuf,
-       wuffs_base__decode_frame_options* a_opts) {
--    return wuffs_nie__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
-+    return wuffs_netpbm__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
-   }
- 
-   inline wuffs_base__rect_ie_u32
-   frame_dirty_rect() const {
--    return wuffs_nie__decoder__frame_dirty_rect(this);
-+    return wuffs_netpbm__decoder__frame_dirty_rect(this);
-   }
- 
-   inline uint32_t
-   num_animation_loops() const {
--    return wuffs_nie__decoder__num_animation_loops(this);
-+    return wuffs_netpbm__decoder__num_animation_loops(this);
-   }
- 
-   inline uint64_t
-   num_decoded_frame_configs() const {
--    return wuffs_nie__decoder__num_decoded_frame_configs(this);
-+    return wuffs_netpbm__decoder__num_decoded_frame_configs(this);
-   }
- 
-   inline uint64_t
-   num_decoded_frames() const {
--    return wuffs_nie__decoder__num_decoded_frames(this);
-+    return wuffs_netpbm__decoder__num_decoded_frames(this);
-   }
- 
-   inline wuffs_base__status
-   restart_frame(
-       uint64_t a_index,
-       uint64_t a_io_position) {
--    return wuffs_nie__decoder__restart_frame(this, a_index, a_io_position);
-+    return wuffs_netpbm__decoder__restart_frame(this, a_index, a_io_position);
-   }
- 
-   inline wuffs_base__empty_struct
-   set_report_metadata(
-       uint32_t a_fourcc,
-       bool a_report) {
--    return wuffs_nie__decoder__set_report_metadata(this, a_fourcc, a_report);
-+    return wuffs_netpbm__decoder__set_report_metadata(this, a_fourcc, a_report);
-   }
- 
-   inline wuffs_base__status
-@@ -10870,49 +11603,36 @@ struct wuffs_nie__decoder__struct {
-       wuffs_base__io_buffer* a_dst,
-       wuffs_base__more_information* a_minfo,
-       wuffs_base__io_buffer* a_src) {
--    return wuffs_nie__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
--  }
--
--  inline uint64_t
--  history_retain_length() const {
--    return wuffs_nie__decoder__history_retain_length(this);
-+    return wuffs_netpbm__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
-   }
- 
-   inline wuffs_base__range_ii_u64
-   workbuf_len() const {
--    return wuffs_nie__decoder__workbuf_len(this);
-+    return wuffs_netpbm__decoder__workbuf_len(this);
-   }
- 
- #endif  // __cplusplus
--};  // struct wuffs_nie__decoder__struct
-+};  // struct wuffs_netpbm__decoder__struct
- 
- #endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE) || defined(WUFFS_NONMONOLITHIC)
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM) || defined(WUFFS_NONMONOLITHIC)
- 
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ZLIB) || defined(WUFFS_NONMONOLITHIC)
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE) || defined(WUFFS_NONMONOLITHIC)
- 
- // ---------------- Status Codes
- 
--extern const char wuffs_zlib__note__dictionary_required[];
--extern const char wuffs_zlib__error__bad_checksum[];
--extern const char wuffs_zlib__error__bad_compression_method[];
--extern const char wuffs_zlib__error__bad_compression_window_size[];
--extern const char wuffs_zlib__error__bad_parity_check[];
--extern const char wuffs_zlib__error__incorrect_dictionary[];
--extern const char wuffs_zlib__error__truncated_input[];
-+extern const char wuffs_nie__error__bad_header[];
-+extern const char wuffs_nie__error__truncated_input[];
-+extern const char wuffs_nie__error__unsupported_nie_file[];
- 
- // ---------------- Public Consts
- 
--#define WUFFS_ZLIB__QUIRK_JUST_RAW_DEFLATE 2113790976
--
--#define WUFFS_ZLIB__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
--
--#define WUFFS_ZLIB__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 1
-+#define WUFFS_NIE__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
- 
- // ---------------- Struct Declarations
- 
--typedef struct wuffs_zlib__decoder__struct wuffs_zlib__decoder;
-+typedef struct wuffs_nie__decoder__struct wuffs_nie__decoder;
- 
- #ifdef __cplusplus
- extern "C" {
-@@ -10927,14 +11647,14 @@ extern "C" {
- // Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
- 
- wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_zlib__decoder__initialize(
--    wuffs_zlib__decoder* self,
-+wuffs_nie__decoder__initialize(
-+    wuffs_nie__decoder* self,
-     size_t sizeof_star_self,
-     uint64_t wuffs_version,
-     uint32_t options);
- 
- size_t
--sizeof__wuffs_zlib__decoder(void);
-+sizeof__wuffs_nie__decoder(void);
- 
- // ---------------- Allocs
- 
-@@ -10944,65 +11664,107 @@ sizeof__wuffs_zlib__decoder(void);
- // calling free on the returned pointer. That pointer is effectively a C++
- // std::unique_ptr<T, wuffs_unique_ptr_deleter>.
- 
--wuffs_zlib__decoder*
--wuffs_zlib__decoder__alloc(void);
-+wuffs_nie__decoder*
-+wuffs_nie__decoder__alloc(void);
- 
--static inline wuffs_base__io_transformer*
--wuffs_zlib__decoder__alloc_as__wuffs_base__io_transformer(void) {
--  return (wuffs_base__io_transformer*)(wuffs_zlib__decoder__alloc());
-+static inline wuffs_base__image_decoder*
-+wuffs_nie__decoder__alloc_as__wuffs_base__image_decoder(void) {
-+  return (wuffs_base__image_decoder*)(wuffs_nie__decoder__alloc());
- }
- 
- // ---------------- Upcasts
- 
--static inline wuffs_base__io_transformer*
--wuffs_zlib__decoder__upcast_as__wuffs_base__io_transformer(
--    wuffs_zlib__decoder* p) {
--  return (wuffs_base__io_transformer*)p;
-+static inline wuffs_base__image_decoder*
-+wuffs_nie__decoder__upcast_as__wuffs_base__image_decoder(
-+    wuffs_nie__decoder* p) {
-+  return (wuffs_base__image_decoder*)p;
- }
- 
- // ---------------- Public Function Prototypes
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_zlib__decoder__dictionary_id(
--    const wuffs_zlib__decoder* self);
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_zlib__decoder__add_dictionary(
--    wuffs_zlib__decoder* self,
--    wuffs_base__slice_u8 a_dict);
--
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_zlib__decoder__get_quirk(
--    const wuffs_zlib__decoder* self,
-+wuffs_nie__decoder__get_quirk(
-+    const wuffs_nie__decoder* self,
-     uint32_t a_key);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_zlib__decoder__set_quirk(
--    wuffs_zlib__decoder* self,
-+wuffs_nie__decoder__set_quirk(
-+    wuffs_nie__decoder* self,
-     uint32_t a_key,
-     uint64_t a_value);
- 
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_nie__decoder__decode_image_config(
-+    wuffs_nie__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_nie__decoder__decode_frame_config(
-+    wuffs_nie__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_nie__decoder__decode_frame(
-+    wuffs_nie__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
-+wuffs_nie__decoder__frame_dirty_rect(
-+    const wuffs_nie__decoder* self);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_nie__decoder__num_animation_loops(
-+    const wuffs_nie__decoder* self);
-+
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_zlib__decoder__history_retain_length(
--    const wuffs_zlib__decoder* self);
-+wuffs_nie__decoder__num_decoded_frame_configs(
-+    const wuffs_nie__decoder* self);
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_zlib__decoder__workbuf_len(
--    const wuffs_zlib__decoder* self);
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_nie__decoder__num_decoded_frames(
-+    const wuffs_nie__decoder* self);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_zlib__decoder__transform_io(
--    wuffs_zlib__decoder* self,
-+wuffs_nie__decoder__restart_frame(
-+    wuffs_nie__decoder* self,
-+    uint64_t a_index,
-+    uint64_t a_io_position);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_nie__decoder__set_report_metadata(
-+    wuffs_nie__decoder* self,
-+    uint32_t a_fourcc,
-+    bool a_report);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_nie__decoder__tell_me_more(
-+    wuffs_nie__decoder* self,
-     wuffs_base__io_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__slice_u8 a_workbuf);
-+    wuffs_base__more_information* a_minfo,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_nie__decoder__workbuf_len(
-+    const wuffs_nie__decoder* self);
- 
- #ifdef __cplusplus
- }  // extern "C"
-@@ -11017,7 +11779,7 @@ wuffs_zlib__decoder__transform_io(
- 
- #if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
- 
--struct wuffs_zlib__decoder__struct {
-+struct wuffs_nie__decoder__struct {
-   // Do not access the private_impl's or private_data's fields directly. There
-   // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
-   // the wuffs_foo__bar__baz functions.
-@@ -11028,20 +11790,336 @@ struct wuffs_zlib__decoder__struct {
-   struct {
-     uint32_t magic;
-     uint32_t active_coroutine;
--    wuffs_base__vtable vtable_for__wuffs_base__io_transformer;
-+    wuffs_base__vtable vtable_for__wuffs_base__image_decoder;
-     wuffs_base__vtable null_vtable;
- 
--    bool f_bad_call_sequence;
--    bool f_header_complete;
-+    uint32_t f_pixfmt;
-+    uint32_t f_width;
-+    uint32_t f_height;
-+    uint8_t f_call_sequence;
-+    uint32_t f_dst_x;
-+    uint32_t f_dst_y;
-+    wuffs_base__pixel_swizzler f_swizzler;
-+
-+    uint32_t p_decode_image_config;
-+    uint32_t p_do_decode_image_config;
-+    uint32_t p_decode_frame_config;
-+    uint32_t p_do_decode_frame_config;
-+    uint32_t p_decode_frame;
-+    uint32_t p_do_decode_frame;
-+  } private_impl;
-+
-+  struct {
-+    struct {
-+      uint64_t scratch;
-+    } s_do_decode_image_config;
-+  } private_data;
-+
-+#ifdef __cplusplus
-+#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
-+  using unique_ptr = std::unique_ptr<wuffs_nie__decoder, wuffs_unique_ptr_deleter>;
-+
-+  // On failure, the alloc_etc functions return nullptr. They don't throw.
-+
-+  static inline unique_ptr
-+  alloc() {
-+    return unique_ptr(wuffs_nie__decoder__alloc());
-+  }
-+
-+  static inline wuffs_base__image_decoder::unique_ptr
-+  alloc_as__wuffs_base__image_decoder() {
-+    return wuffs_base__image_decoder::unique_ptr(
-+        wuffs_nie__decoder__alloc_as__wuffs_base__image_decoder());
-+  }
-+#endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
-+
-+#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
-+  // Disallow constructing or copying an object via standard C++ mechanisms,
-+  // e.g. the "new" operator, as this struct is intentionally opaque. Its total
-+  // size and field layout is not part of the public, stable, memory-safe API.
-+  // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
-+  // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
-+  // their first argument) rather than tweaking bar.private_impl.qux fields.
-+  //
-+  // In C, we can just leave wuffs_foo__bar as an incomplete type (unless
-+  // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
-+  // order to provide convenience methods. These forward on "this", so that you
-+  // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
-+  wuffs_nie__decoder__struct() = delete;
-+  wuffs_nie__decoder__struct(const wuffs_nie__decoder__struct&) = delete;
-+  wuffs_nie__decoder__struct& operator=(
-+      const wuffs_nie__decoder__struct&) = delete;
-+#endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
-+
-+#if !defined(WUFFS_IMPLEMENTATION)
-+  // As above, the size of the struct is not part of the public API, and unless
-+  // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
-+  // allocated, not stack allocated. Its size is not intended to be known at
-+  // compile time, but it is unfortunately divulged as a side effect of
-+  // defining C++ convenience methods. Use "sizeof__T()", calling the function,
-+  // instead of "sizeof T", invoking the operator. To make the two values
-+  // different, so that passing the latter will be rejected by the initialize
-+  // function, we add an arbitrary amount of dead weight.
-+  uint8_t dead_weight[123000000];  // 123 MB.
-+#endif  // !defined(WUFFS_IMPLEMENTATION)
-+
-+  inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+  initialize(
-+      size_t sizeof_star_self,
-+      uint64_t wuffs_version,
-+      uint32_t options) {
-+    return wuffs_nie__decoder__initialize(
-+        this, sizeof_star_self, wuffs_version, options);
-+  }
-+
-+  inline wuffs_base__image_decoder*
-+  upcast_as__wuffs_base__image_decoder() {
-+    return (wuffs_base__image_decoder*)this;
-+  }
-+
-+  inline uint64_t
-+  get_quirk(
-+      uint32_t a_key) const {
-+    return wuffs_nie__decoder__get_quirk(this, a_key);
-+  }
-+
-+  inline wuffs_base__status
-+  set_quirk(
-+      uint32_t a_key,
-+      uint64_t a_value) {
-+    return wuffs_nie__decoder__set_quirk(this, a_key, a_value);
-+  }
-+
-+  inline wuffs_base__status
-+  decode_image_config(
-+      wuffs_base__image_config* a_dst,
-+      wuffs_base__io_buffer* a_src) {
-+    return wuffs_nie__decoder__decode_image_config(this, a_dst, a_src);
-+  }
-+
-+  inline wuffs_base__status
-+  decode_frame_config(
-+      wuffs_base__frame_config* a_dst,
-+      wuffs_base__io_buffer* a_src) {
-+    return wuffs_nie__decoder__decode_frame_config(this, a_dst, a_src);
-+  }
-+
-+  inline wuffs_base__status
-+  decode_frame(
-+      wuffs_base__pixel_buffer* a_dst,
-+      wuffs_base__io_buffer* a_src,
-+      wuffs_base__pixel_blend a_blend,
-+      wuffs_base__slice_u8 a_workbuf,
-+      wuffs_base__decode_frame_options* a_opts) {
-+    return wuffs_nie__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
-+  }
-+
-+  inline wuffs_base__rect_ie_u32
-+  frame_dirty_rect() const {
-+    return wuffs_nie__decoder__frame_dirty_rect(this);
-+  }
-+
-+  inline uint32_t
-+  num_animation_loops() const {
-+    return wuffs_nie__decoder__num_animation_loops(this);
-+  }
-+
-+  inline uint64_t
-+  num_decoded_frame_configs() const {
-+    return wuffs_nie__decoder__num_decoded_frame_configs(this);
-+  }
-+
-+  inline uint64_t
-+  num_decoded_frames() const {
-+    return wuffs_nie__decoder__num_decoded_frames(this);
-+  }
-+
-+  inline wuffs_base__status
-+  restart_frame(
-+      uint64_t a_index,
-+      uint64_t a_io_position) {
-+    return wuffs_nie__decoder__restart_frame(this, a_index, a_io_position);
-+  }
-+
-+  inline wuffs_base__empty_struct
-+  set_report_metadata(
-+      uint32_t a_fourcc,
-+      bool a_report) {
-+    return wuffs_nie__decoder__set_report_metadata(this, a_fourcc, a_report);
-+  }
-+
-+  inline wuffs_base__status
-+  tell_me_more(
-+      wuffs_base__io_buffer* a_dst,
-+      wuffs_base__more_information* a_minfo,
-+      wuffs_base__io_buffer* a_src) {
-+    return wuffs_nie__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
-+  }
-+
-+  inline wuffs_base__range_ii_u64
-+  workbuf_len() const {
-+    return wuffs_nie__decoder__workbuf_len(this);
-+  }
-+
-+#endif  // __cplusplus
-+};  // struct wuffs_nie__decoder__struct
-+
-+#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
-+
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE) || defined(WUFFS_NONMONOLITHIC)
-+
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ZLIB) || defined(WUFFS_NONMONOLITHIC)
-+
-+// ---------------- Status Codes
-+
-+extern const char wuffs_zlib__note__dictionary_required[];
-+extern const char wuffs_zlib__error__bad_checksum[];
-+extern const char wuffs_zlib__error__bad_compression_method[];
-+extern const char wuffs_zlib__error__bad_compression_window_size[];
-+extern const char wuffs_zlib__error__bad_parity_check[];
-+extern const char wuffs_zlib__error__incorrect_dictionary[];
-+extern const char wuffs_zlib__error__truncated_input[];
-+
-+// ---------------- Public Consts
-+
-+#define WUFFS_ZLIB__QUIRK_JUST_RAW_DEFLATE 2113790976u
-+
-+#define WUFFS_ZLIB__DECODER_DST_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0u
-+
-+#define WUFFS_ZLIB__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 1u
-+
-+// ---------------- Struct Declarations
-+
-+typedef struct wuffs_zlib__decoder__struct wuffs_zlib__decoder;
-+
-+#ifdef __cplusplus
-+extern "C" {
-+#endif
-+
-+// ---------------- Public Initializer Prototypes
-+
-+// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
-+// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
-+//
-+// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
-+// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_zlib__decoder__initialize(
-+    wuffs_zlib__decoder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options);
-+
-+size_t
-+sizeof__wuffs_zlib__decoder(void);
-+
-+// ---------------- Allocs
-+
-+// These functions allocate and initialize Wuffs structs. They return NULL if
-+// memory allocation fails. If they return non-NULL, there is no need to call
-+// wuffs_foo__bar__initialize, but the caller is responsible for eventually
-+// calling free on the returned pointer. That pointer is effectively a C++
-+// std::unique_ptr<T, wuffs_unique_ptr_deleter>.
-+
-+wuffs_zlib__decoder*
-+wuffs_zlib__decoder__alloc(void);
-+
-+static inline wuffs_base__io_transformer*
-+wuffs_zlib__decoder__alloc_as__wuffs_base__io_transformer(void) {
-+  return (wuffs_base__io_transformer*)(wuffs_zlib__decoder__alloc());
-+}
-+
-+// ---------------- Upcasts
-+
-+static inline wuffs_base__io_transformer*
-+wuffs_zlib__decoder__upcast_as__wuffs_base__io_transformer(
-+    wuffs_zlib__decoder* p) {
-+  return (wuffs_base__io_transformer*)p;
-+}
-+
-+// ---------------- Public Function Prototypes
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_zlib__decoder__dictionary_id(
-+    const wuffs_zlib__decoder* self);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_zlib__decoder__add_dictionary(
-+    wuffs_zlib__decoder* self,
-+    wuffs_base__slice_u8 a_dict);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_zlib__decoder__get_quirk(
-+    const wuffs_zlib__decoder* self,
-+    uint32_t a_key);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_zlib__decoder__set_quirk(
-+    wuffs_zlib__decoder* self,
-+    uint32_t a_key,
-+    uint64_t a_value);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
-+wuffs_zlib__decoder__dst_history_retain_length(
-+    const wuffs_zlib__decoder* self);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_zlib__decoder__workbuf_len(
-+    const wuffs_zlib__decoder* self);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_zlib__decoder__transform_io(
-+    wuffs_zlib__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf);
-+
-+#ifdef __cplusplus
-+}  // extern "C"
-+#endif
-+
-+// ---------------- Struct Definitions
-+
-+// These structs' fields, and the sizeof them, are private implementation
-+// details that aren't guaranteed to be stable across Wuffs versions.
-+//
-+// See https://en.wikipedia.org/wiki/Opaque_pointer#C
-+
-+#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
-+
-+struct wuffs_zlib__decoder__struct {
-+  // Do not access the private_impl's or private_data's fields directly. There
-+  // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
-+  // the wuffs_foo__bar__baz functions.
-+  //
-+  // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
-+  // can be stack allocated when WUFFS_IMPLEMENTATION is defined.
-+
-+  struct {
-+    uint32_t magic;
-+    uint32_t active_coroutine;
-+    wuffs_base__vtable vtable_for__wuffs_base__io_transformer;
-+    wuffs_base__vtable null_vtable;
-+
-+    bool f_bad_call_sequence;
-+    bool f_header_complete;
-     bool f_got_dictionary;
-     bool f_want_dictionary;
-     bool f_quirks[1];
-     bool f_ignore_checksum;
--    uint32_t f_dict_id_got;
-+    uint32_t f_dict_id_have;
-     uint32_t f_dict_id_want;
- 
--    uint32_t p_transform_io[1];
--    uint32_t p_do_transform_io[1];
-+    uint32_t p_transform_io;
-+    uint32_t p_do_transform_io;
-   } private_impl;
- 
-   struct {
-@@ -11050,9 +12128,9 @@ struct wuffs_zlib__decoder__struct {
-     wuffs_deflate__decoder f_flate;
- 
-     struct {
--      uint32_t v_checksum_got;
-+      uint32_t v_checksum_have;
-       uint64_t scratch;
--    } s_do_transform_io[1];
-+    } s_do_transform_io;
-   } private_data;
- 
- #ifdef __cplusplus
-@@ -11141,9 +12219,9 @@ struct wuffs_zlib__decoder__struct {
-     return wuffs_zlib__decoder__set_quirk(this, a_key, a_value);
-   }
- 
--  inline uint64_t
--  history_retain_length() const {
--    return wuffs_zlib__decoder__history_retain_length(this);
-+  inline wuffs_base__optional_u63
-+  dst_history_retain_length() const {
-+    return wuffs_zlib__decoder__dst_history_retain_length(this);
-   }
- 
-   inline wuffs_base__range_ii_u64
-@@ -11184,11 +12262,9 @@ extern const char wuffs_png__error__unsupported_png_file[];
- 
- // ---------------- Public Consts
- 
--#define WUFFS_PNG__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
-+#define WUFFS_PNG__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 2251799562027015u
- 
--#define WUFFS_PNG__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 2251799562027015
--
--#define WUFFS_PNG__DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL 8
-+#define WUFFS_PNG__DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL 8u
- 
- // ---------------- Struct Declarations
- 
-@@ -11321,11 +12397,6 @@ wuffs_png__decoder__tell_me_more(
-     wuffs_base__more_information* a_minfo,
-     wuffs_base__io_buffer* a_src);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_png__decoder__history_retain_length(
--    const wuffs_png__decoder* self);
--
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
- wuffs_png__decoder__workbuf_len(
-@@ -11438,26 +12509,26 @@ struct wuffs_png__decoder__struct {
-         wuffs_png__decoder* self,
-         wuffs_base__slice_u8 a_curr,
-         wuffs_base__slice_u8 a_prev);
--    uint32_t p_decode_image_config[1];
--    uint32_t p_do_decode_image_config[1];
--    uint32_t p_decode_ihdr[1];
--    uint32_t p_decode_other_chunk[1];
--    uint32_t p_decode_actl[1];
--    uint32_t p_decode_chrm[1];
--    uint32_t p_decode_fctl[1];
--    uint32_t p_decode_gama[1];
--    uint32_t p_decode_iccp[1];
--    uint32_t p_decode_plte[1];
--    uint32_t p_decode_srgb[1];
--    uint32_t p_decode_trns[1];
--    uint32_t p_decode_frame_config[1];
--    uint32_t p_do_decode_frame_config[1];
--    uint32_t p_skip_frame[1];
--    uint32_t p_decode_frame[1];
--    uint32_t p_do_decode_frame[1];
--    uint32_t p_decode_pass[1];
--    uint32_t p_tell_me_more[1];
--    uint32_t p_do_tell_me_more[1];
-+    uint32_t p_decode_image_config;
-+    uint32_t p_do_decode_image_config;
-+    uint32_t p_decode_ihdr;
-+    uint32_t p_decode_other_chunk;
-+    uint32_t p_decode_actl;
-+    uint32_t p_decode_chrm;
-+    uint32_t p_decode_fctl;
-+    uint32_t p_decode_gama;
-+    uint32_t p_decode_iccp;
-+    uint32_t p_decode_plte;
-+    uint32_t p_decode_srgb;
-+    uint32_t p_decode_trns;
-+    uint32_t p_decode_frame_config;
-+    uint32_t p_do_decode_frame_config;
-+    uint32_t p_skip_frame;
-+    uint32_t p_decode_frame;
-+    uint32_t p_do_decode_frame;
-+    uint32_t p_decode_pass;
-+    uint32_t p_tell_me_more;
-+    uint32_t p_do_tell_me_more;
-     wuffs_base__status (*choosy_filter_and_swizzle)(
-         wuffs_png__decoder* self,
-         wuffs_base__pixel_buffer* a_dst,
-@@ -11473,54 +12544,54 @@ struct wuffs_png__decoder__struct {
-     struct {
-       uint32_t v_checksum_have;
-       uint64_t scratch;
--    } s_do_decode_image_config[1];
-+    } s_do_decode_image_config;
-     struct {
-       uint64_t scratch;
--    } s_decode_ihdr[1];
-+    } s_decode_ihdr;
-     struct {
-       uint64_t scratch;
--    } s_decode_other_chunk[1];
-+    } s_decode_other_chunk;
-     struct {
-       uint64_t scratch;
--    } s_decode_actl[1];
-+    } s_decode_actl;
-     struct {
-       uint64_t scratch;
--    } s_decode_chrm[1];
-+    } s_decode_chrm;
-     struct {
-       uint32_t v_x0;
-       uint32_t v_x1;
-       uint32_t v_y1;
-       uint64_t scratch;
--    } s_decode_fctl[1];
-+    } s_decode_fctl;
-     struct {
-       uint64_t scratch;
--    } s_decode_gama[1];
-+    } s_decode_gama;
-     struct {
-       uint32_t v_num_entries;
-       uint32_t v_i;
-       uint64_t scratch;
--    } s_decode_plte[1];
-+    } s_decode_plte;
-     struct {
-       uint32_t v_i;
-       uint32_t v_n;
-       uint64_t scratch;
--    } s_decode_trns[1];
-+    } s_decode_trns;
-     struct {
-       uint64_t scratch;
--    } s_do_decode_frame_config[1];
-+    } s_do_decode_frame_config;
-     struct {
-       uint64_t scratch;
--    } s_skip_frame[1];
-+    } s_skip_frame;
-     struct {
-       uint64_t scratch;
--    } s_do_decode_frame[1];
-+    } s_do_decode_frame;
-     struct {
-       uint64_t scratch;
--    } s_decode_pass[1];
-+    } s_decode_pass;
-     struct {
-       wuffs_base__status v_zlib_status;
-       uint64_t scratch;
--    } s_do_tell_me_more[1];
-+    } s_do_tell_me_more;
-   } private_data;
- 
- #ifdef __cplusplus
-@@ -11664,11 +12735,6 @@ struct wuffs_png__decoder__struct {
-     return wuffs_png__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
-   }
- 
--  inline uint64_t
--  history_retain_length() const {
--    return wuffs_png__decoder__history_retain_length(this);
--  }
--
-   inline wuffs_base__range_ii_u64
-   workbuf_len() const {
-     return wuffs_png__decoder__workbuf_len(this);
-@@ -11681,24 +12747,21 @@ struct wuffs_png__decoder__struct {
- 
- #endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG) || defined(WUFFS_NONMONOLITHIC)
- 
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA) || defined(WUFFS_NONMONOLITHIC)
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__QOI) || defined(WUFFS_NONMONOLITHIC)
- 
- // ---------------- Status Codes
- 
--extern const char wuffs_tga__error__bad_header[];
--extern const char wuffs_tga__error__bad_run_length_encoding[];
--extern const char wuffs_tga__error__truncated_input[];
--extern const char wuffs_tga__error__unsupported_tga_file[];
-+extern const char wuffs_qoi__error__bad_footer[];
-+extern const char wuffs_qoi__error__bad_header[];
-+extern const char wuffs_qoi__error__truncated_input[];
- 
- // ---------------- Public Consts
- 
--#define WUFFS_TGA__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
--
--#define WUFFS_TGA__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
-+#define WUFFS_QOI__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
- 
- // ---------------- Struct Declarations
- 
--typedef struct wuffs_tga__decoder__struct wuffs_tga__decoder;
-+typedef struct wuffs_qoi__decoder__struct wuffs_qoi__decoder;
- 
- #ifdef __cplusplus
- extern "C" {
-@@ -11713,14 +12776,14 @@ extern "C" {
- // Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
- 
- wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_tga__decoder__initialize(
--    wuffs_tga__decoder* self,
-+wuffs_qoi__decoder__initialize(
-+    wuffs_qoi__decoder* self,
-     size_t sizeof_star_self,
-     uint64_t wuffs_version,
-     uint32_t options);
- 
- size_t
--sizeof__wuffs_tga__decoder(void);
-+sizeof__wuffs_qoi__decoder(void);
- 
- // ---------------- Allocs
- 
-@@ -11730,19 +12793,19 @@ sizeof__wuffs_tga__decoder(void);
- // calling free on the returned pointer. That pointer is effectively a C++
- // std::unique_ptr<T, wuffs_unique_ptr_deleter>.
- 
--wuffs_tga__decoder*
--wuffs_tga__decoder__alloc(void);
-+wuffs_qoi__decoder*
-+wuffs_qoi__decoder__alloc(void);
- 
- static inline wuffs_base__image_decoder*
--wuffs_tga__decoder__alloc_as__wuffs_base__image_decoder(void) {
--  return (wuffs_base__image_decoder*)(wuffs_tga__decoder__alloc());
-+wuffs_qoi__decoder__alloc_as__wuffs_base__image_decoder(void) {
-+  return (wuffs_base__image_decoder*)(wuffs_qoi__decoder__alloc());
- }
- 
- // ---------------- Upcasts
- 
- static inline wuffs_base__image_decoder*
--wuffs_tga__decoder__upcast_as__wuffs_base__image_decoder(
--    wuffs_tga__decoder* p) {
-+wuffs_qoi__decoder__upcast_as__wuffs_base__image_decoder(
-+    wuffs_qoi__decoder* p) {
-   return (wuffs_base__image_decoder*)p;
- }
- 
-@@ -11750,35 +12813,35 @@ wuffs_tga__decoder__upcast_as__wuffs_base__image_decoder(
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_tga__decoder__get_quirk(
--    const wuffs_tga__decoder* self,
-+wuffs_qoi__decoder__get_quirk(
-+    const wuffs_qoi__decoder* self,
-     uint32_t a_key);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_tga__decoder__set_quirk(
--    wuffs_tga__decoder* self,
-+wuffs_qoi__decoder__set_quirk(
-+    wuffs_qoi__decoder* self,
-     uint32_t a_key,
-     uint64_t a_value);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_tga__decoder__decode_image_config(
--    wuffs_tga__decoder* self,
-+wuffs_qoi__decoder__decode_image_config(
-+    wuffs_qoi__decoder* self,
-     wuffs_base__image_config* a_dst,
-     wuffs_base__io_buffer* a_src);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_tga__decoder__decode_frame_config(
--    wuffs_tga__decoder* self,
-+wuffs_qoi__decoder__decode_frame_config(
-+    wuffs_qoi__decoder* self,
-     wuffs_base__frame_config* a_dst,
-     wuffs_base__io_buffer* a_src);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_tga__decoder__decode_frame(
--    wuffs_tga__decoder* self,
-+wuffs_qoi__decoder__decode_frame(
-+    wuffs_qoi__decoder* self,
-     wuffs_base__pixel_buffer* a_dst,
-     wuffs_base__io_buffer* a_src,
-     wuffs_base__pixel_blend a_blend,
-@@ -11787,55 +12850,50 @@ wuffs_tga__decoder__decode_frame(
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
--wuffs_tga__decoder__frame_dirty_rect(
--    const wuffs_tga__decoder* self);
-+wuffs_qoi__decoder__frame_dirty_rect(
-+    const wuffs_qoi__decoder* self);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_tga__decoder__num_animation_loops(
--    const wuffs_tga__decoder* self);
-+wuffs_qoi__decoder__num_animation_loops(
-+    const wuffs_qoi__decoder* self);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_tga__decoder__num_decoded_frame_configs(
--    const wuffs_tga__decoder* self);
-+wuffs_qoi__decoder__num_decoded_frame_configs(
-+    const wuffs_qoi__decoder* self);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_tga__decoder__num_decoded_frames(
--    const wuffs_tga__decoder* self);
-+wuffs_qoi__decoder__num_decoded_frames(
-+    const wuffs_qoi__decoder* self);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_tga__decoder__restart_frame(
--    wuffs_tga__decoder* self,
-+wuffs_qoi__decoder__restart_frame(
-+    wuffs_qoi__decoder* self,
-     uint64_t a_index,
-     uint64_t a_io_position);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_tga__decoder__set_report_metadata(
--    wuffs_tga__decoder* self,
-+wuffs_qoi__decoder__set_report_metadata(
-+    wuffs_qoi__decoder* self,
-     uint32_t a_fourcc,
-     bool a_report);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_tga__decoder__tell_me_more(
--    wuffs_tga__decoder* self,
-+wuffs_qoi__decoder__tell_me_more(
-+    wuffs_qoi__decoder* self,
-     wuffs_base__io_buffer* a_dst,
-     wuffs_base__more_information* a_minfo,
-     wuffs_base__io_buffer* a_src);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_tga__decoder__history_retain_length(
--    const wuffs_tga__decoder* self);
--
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_tga__decoder__workbuf_len(
--    const wuffs_tga__decoder* self);
-+wuffs_qoi__decoder__workbuf_len(
-+    const wuffs_qoi__decoder* self);
- 
- #ifdef __cplusplus
- }  // extern "C"
-@@ -11850,7 +12908,7 @@ wuffs_tga__decoder__workbuf_len(
- 
- #if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
- 
--struct wuffs_tga__decoder__struct {
-+struct wuffs_qoi__decoder__struct {
-   // Do not access the private_impl's or private_data's fields directly. There
-   // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
-   // the wuffs_foo__bar__baz functions.
-@@ -11864,69 +12922,58 @@ struct wuffs_tga__decoder__struct {
-     wuffs_base__vtable vtable_for__wuffs_base__image_decoder;
-     wuffs_base__vtable null_vtable;
- 
-+    uint32_t f_pixfmt;
-     uint32_t f_width;
-     uint32_t f_height;
-+    uint64_t f_remaining_pixels_times_4;
-     uint8_t f_call_sequence;
--    uint8_t f_header_id_length;
--    uint8_t f_header_color_map_type;
--    uint8_t f_header_image_type;
--    uint16_t f_header_color_map_first_entry_index;
--    uint16_t f_header_color_map_length;
--    uint8_t f_header_color_map_entry_size;
--    uint8_t f_header_pixel_depth;
--    uint8_t f_header_image_descriptor;
--    bool f_opaque;
--    uint32_t f_scratch_bytes_per_pixel;
--    uint32_t f_src_bytes_per_pixel;
--    uint32_t f_src_pixfmt;
--    uint64_t f_frame_config_io_position;
-+    uint32_t f_buffer_index;
-+    uint32_t f_dst_x;
-+    uint32_t f_dst_y;
-     wuffs_base__pixel_swizzler f_swizzler;
- 
--    uint32_t p_decode_image_config[1];
--    uint32_t p_do_decode_image_config[1];
--    uint32_t p_decode_frame_config[1];
--    uint32_t p_do_decode_frame_config[1];
--    uint32_t p_decode_frame[1];
--    uint32_t p_do_decode_frame[1];
-+    uint32_t p_decode_image_config;
-+    uint32_t p_do_decode_image_config;
-+    uint32_t p_decode_frame_config;
-+    uint32_t p_do_decode_frame_config;
-+    uint32_t p_decode_frame;
-+    uint32_t p_do_decode_frame;
-+    uint32_t p_from_src_to_buffer;
-   } private_impl;
- 
-   struct {
--    uint8_t f_dst_palette[1024];
--    uint8_t f_src_palette[1024];
--    uint8_t f_scratch[4];
-+    uint8_t f_pixel[4];
-+    uint8_t f_cache[256];
-+    uint8_t f_buffer[8196];
- 
-     struct {
--      uint32_t v_i;
-       uint64_t scratch;
--    } s_do_decode_image_config[1];
-+    } s_do_decode_image_config;
-     struct {
--      uint64_t v_dst_bytes_per_pixel;
--      uint32_t v_dst_x;
--      uint32_t v_dst_y;
--      uint64_t v_mark;
--      uint32_t v_num_pixels32;
--      uint32_t v_lit_length;
--      uint32_t v_run_length;
--      uint64_t v_num_dst_bytes;
-       uint64_t scratch;
--    } s_do_decode_frame[1];
-+    } s_do_decode_frame;
-+    struct {
-+      uint8_t v_dg;
-+      uint32_t v_bi;
-+      uint32_t v_bk;
-+    } s_from_src_to_buffer;
-   } private_data;
- 
- #ifdef __cplusplus
- #if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
--  using unique_ptr = std::unique_ptr<wuffs_tga__decoder, wuffs_unique_ptr_deleter>;
-+  using unique_ptr = std::unique_ptr<wuffs_qoi__decoder, wuffs_unique_ptr_deleter>;
- 
-   // On failure, the alloc_etc functions return nullptr. They don't throw.
- 
-   static inline unique_ptr
-   alloc() {
--    return unique_ptr(wuffs_tga__decoder__alloc());
-+    return unique_ptr(wuffs_qoi__decoder__alloc());
-   }
- 
-   static inline wuffs_base__image_decoder::unique_ptr
-   alloc_as__wuffs_base__image_decoder() {
-     return wuffs_base__image_decoder::unique_ptr(
--        wuffs_tga__decoder__alloc_as__wuffs_base__image_decoder());
-+        wuffs_qoi__decoder__alloc_as__wuffs_base__image_decoder());
-   }
- #endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
- 
-@@ -11942,10 +12989,10 @@ struct wuffs_tga__decoder__struct {
-   // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
-   // order to provide convenience methods. These forward on "this", so that you
-   // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
--  wuffs_tga__decoder__struct() = delete;
--  wuffs_tga__decoder__struct(const wuffs_tga__decoder__struct&) = delete;
--  wuffs_tga__decoder__struct& operator=(
--      const wuffs_tga__decoder__struct&) = delete;
-+  wuffs_qoi__decoder__struct() = delete;
-+  wuffs_qoi__decoder__struct(const wuffs_qoi__decoder__struct&) = delete;
-+  wuffs_qoi__decoder__struct& operator=(
-+      const wuffs_qoi__decoder__struct&) = delete;
- #endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
- 
- #if !defined(WUFFS_IMPLEMENTATION)
-@@ -11965,7 +13012,7 @@ struct wuffs_tga__decoder__struct {
-       size_t sizeof_star_self,
-       uint64_t wuffs_version,
-       uint32_t options) {
--    return wuffs_tga__decoder__initialize(
-+    return wuffs_qoi__decoder__initialize(
-         this, sizeof_star_self, wuffs_version, options);
-   }
- 
-@@ -11977,28 +13024,28 @@ struct wuffs_tga__decoder__struct {
-   inline uint64_t
-   get_quirk(
-       uint32_t a_key) const {
--    return wuffs_tga__decoder__get_quirk(this, a_key);
-+    return wuffs_qoi__decoder__get_quirk(this, a_key);
-   }
- 
-   inline wuffs_base__status
-   set_quirk(
-       uint32_t a_key,
-       uint64_t a_value) {
--    return wuffs_tga__decoder__set_quirk(this, a_key, a_value);
-+    return wuffs_qoi__decoder__set_quirk(this, a_key, a_value);
-   }
- 
-   inline wuffs_base__status
-   decode_image_config(
-       wuffs_base__image_config* a_dst,
-       wuffs_base__io_buffer* a_src) {
--    return wuffs_tga__decoder__decode_image_config(this, a_dst, a_src);
-+    return wuffs_qoi__decoder__decode_image_config(this, a_dst, a_src);
-   }
- 
-   inline wuffs_base__status
-   decode_frame_config(
-       wuffs_base__frame_config* a_dst,
-       wuffs_base__io_buffer* a_src) {
--    return wuffs_tga__decoder__decode_frame_config(this, a_dst, a_src);
-+    return wuffs_qoi__decoder__decode_frame_config(this, a_dst, a_src);
-   }
- 
-   inline wuffs_base__status
-@@ -12008,41 +13055,41 @@ struct wuffs_tga__decoder__struct {
-       wuffs_base__pixel_blend a_blend,
-       wuffs_base__slice_u8 a_workbuf,
-       wuffs_base__decode_frame_options* a_opts) {
--    return wuffs_tga__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
-+    return wuffs_qoi__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
-   }
- 
-   inline wuffs_base__rect_ie_u32
-   frame_dirty_rect() const {
--    return wuffs_tga__decoder__frame_dirty_rect(this);
-+    return wuffs_qoi__decoder__frame_dirty_rect(this);
-   }
- 
-   inline uint32_t
-   num_animation_loops() const {
--    return wuffs_tga__decoder__num_animation_loops(this);
-+    return wuffs_qoi__decoder__num_animation_loops(this);
-   }
- 
-   inline uint64_t
-   num_decoded_frame_configs() const {
--    return wuffs_tga__decoder__num_decoded_frame_configs(this);
-+    return wuffs_qoi__decoder__num_decoded_frame_configs(this);
-   }
- 
-   inline uint64_t
-   num_decoded_frames() const {
--    return wuffs_tga__decoder__num_decoded_frames(this);
-+    return wuffs_qoi__decoder__num_decoded_frames(this);
-   }
- 
-   inline wuffs_base__status
-   restart_frame(
-       uint64_t a_index,
-       uint64_t a_io_position) {
--    return wuffs_tga__decoder__restart_frame(this, a_index, a_io_position);
-+    return wuffs_qoi__decoder__restart_frame(this, a_index, a_io_position);
-   }
- 
-   inline wuffs_base__empty_struct
-   set_report_metadata(
-       uint32_t a_fourcc,
-       bool a_report) {
--    return wuffs_tga__decoder__set_report_metadata(this, a_fourcc, a_report);
-+    return wuffs_qoi__decoder__set_report_metadata(this, a_fourcc, a_report);
-   }
- 
-   inline wuffs_base__status
-@@ -12050,42 +13097,30 @@ struct wuffs_tga__decoder__struct {
-       wuffs_base__io_buffer* a_dst,
-       wuffs_base__more_information* a_minfo,
-       wuffs_base__io_buffer* a_src) {
--    return wuffs_tga__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
--  }
--
--  inline uint64_t
--  history_retain_length() const {
--    return wuffs_tga__decoder__history_retain_length(this);
-+    return wuffs_qoi__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
-   }
- 
-   inline wuffs_base__range_ii_u64
-   workbuf_len() const {
--    return wuffs_tga__decoder__workbuf_len(this);
-+    return wuffs_qoi__decoder__workbuf_len(this);
-   }
- 
- #endif  // __cplusplus
--};  // struct wuffs_tga__decoder__struct
-+};  // struct wuffs_qoi__decoder__struct
- 
- #endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA) || defined(WUFFS_NONMONOLITHIC)
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__QOI) || defined(WUFFS_NONMONOLITHIC)
- 
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP) || defined(WUFFS_NONMONOLITHIC)
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__SHA256) || defined(WUFFS_NONMONOLITHIC)
- 
- // ---------------- Status Codes
- 
--extern const char wuffs_wbmp__error__bad_header[];
--extern const char wuffs_wbmp__error__truncated_input[];
--
- // ---------------- Public Consts
- 
--#define WUFFS_WBMP__DECODER_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0
--
--#define WUFFS_WBMP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
--
- // ---------------- Struct Declarations
- 
--typedef struct wuffs_wbmp__decoder__struct wuffs_wbmp__decoder;
-+typedef struct wuffs_sha256__hasher__struct wuffs_sha256__hasher;
- 
- #ifdef __cplusplus
- extern "C" {
-@@ -12100,14 +13135,14 @@ extern "C" {
- // Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
- 
- wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_wbmp__decoder__initialize(
--    wuffs_wbmp__decoder* self,
-+wuffs_sha256__hasher__initialize(
-+    wuffs_sha256__hasher* self,
-     size_t sizeof_star_self,
-     uint64_t wuffs_version,
-     uint32_t options);
- 
- size_t
--sizeof__wuffs_wbmp__decoder(void);
-+sizeof__wuffs_sha256__hasher(void);
- 
- // ---------------- Allocs
- 
-@@ -12117,112 +13152,53 @@ sizeof__wuffs_wbmp__decoder(void);
- // calling free on the returned pointer. That pointer is effectively a C++
- // std::unique_ptr<T, wuffs_unique_ptr_deleter>.
- 
--wuffs_wbmp__decoder*
--wuffs_wbmp__decoder__alloc(void);
-+wuffs_sha256__hasher*
-+wuffs_sha256__hasher__alloc(void);
- 
--static inline wuffs_base__image_decoder*
--wuffs_wbmp__decoder__alloc_as__wuffs_base__image_decoder(void) {
--  return (wuffs_base__image_decoder*)(wuffs_wbmp__decoder__alloc());
-+static inline wuffs_base__hasher_bitvec256*
-+wuffs_sha256__hasher__alloc_as__wuffs_base__hasher_bitvec256(void) {
-+  return (wuffs_base__hasher_bitvec256*)(wuffs_sha256__hasher__alloc());
- }
- 
- // ---------------- Upcasts
- 
--static inline wuffs_base__image_decoder*
--wuffs_wbmp__decoder__upcast_as__wuffs_base__image_decoder(
--    wuffs_wbmp__decoder* p) {
--  return (wuffs_base__image_decoder*)p;
-+static inline wuffs_base__hasher_bitvec256*
-+wuffs_sha256__hasher__upcast_as__wuffs_base__hasher_bitvec256(
-+    wuffs_sha256__hasher* p) {
-+  return (wuffs_base__hasher_bitvec256*)p;
- }
- 
- // ---------------- Public Function Prototypes
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_wbmp__decoder__get_quirk(
--    const wuffs_wbmp__decoder* self,
-+wuffs_sha256__hasher__get_quirk(
-+    const wuffs_sha256__hasher* self,
-     uint32_t a_key);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_wbmp__decoder__set_quirk(
--    wuffs_wbmp__decoder* self,
-+wuffs_sha256__hasher__set_quirk(
-+    wuffs_sha256__hasher* self,
-     uint32_t a_key,
-     uint64_t a_value);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_wbmp__decoder__decode_image_config(
--    wuffs_wbmp__decoder* self,
--    wuffs_base__image_config* a_dst,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_wbmp__decoder__decode_frame_config(
--    wuffs_wbmp__decoder* self,
--    wuffs_base__frame_config* a_dst,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_wbmp__decoder__decode_frame(
--    wuffs_wbmp__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts);
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
--wuffs_wbmp__decoder__frame_dirty_rect(
--    const wuffs_wbmp__decoder* self);
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_wbmp__decoder__num_animation_loops(
--    const wuffs_wbmp__decoder* self);
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_wbmp__decoder__num_decoded_frame_configs(
--    const wuffs_wbmp__decoder* self);
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_wbmp__decoder__num_decoded_frames(
--    const wuffs_wbmp__decoder* self);
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_wbmp__decoder__restart_frame(
--    wuffs_wbmp__decoder* self,
--    uint64_t a_index,
--    uint64_t a_io_position);
--
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_wbmp__decoder__set_report_metadata(
--    wuffs_wbmp__decoder* self,
--    uint32_t a_fourcc,
--    bool a_report);
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_wbmp__decoder__tell_me_more(
--    wuffs_wbmp__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__more_information* a_minfo,
--    wuffs_base__io_buffer* a_src);
-+wuffs_sha256__hasher__update(
-+    wuffs_sha256__hasher* self,
-+    wuffs_base__slice_u8 a_x);
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_wbmp__decoder__history_retain_length(
--    const wuffs_wbmp__decoder* self);
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__bitvec256
-+wuffs_sha256__hasher__update_bitvec256(
-+    wuffs_sha256__hasher* self,
-+    wuffs_base__slice_u8 a_x);
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_wbmp__decoder__workbuf_len(
--    const wuffs_wbmp__decoder* self);
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__bitvec256
-+wuffs_sha256__hasher__checksum_bitvec256(
-+    const wuffs_sha256__hasher* self);
- 
- #ifdef __cplusplus
- }  // extern "C"
-@@ -12237,7 +13213,7 @@ wuffs_wbmp__decoder__workbuf_len(
- 
- #if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
- 
--struct wuffs_wbmp__decoder__struct {
-+struct wuffs_sha256__hasher__struct {
-   // Do not access the private_impl's or private_data's fields directly. There
-   // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
-   // the wuffs_foo__bar__baz functions.
-@@ -12248,52 +13224,41 @@ struct wuffs_wbmp__decoder__struct {
-   struct {
-     uint32_t magic;
-     uint32_t active_coroutine;
--    wuffs_base__vtable vtable_for__wuffs_base__image_decoder;
-+    wuffs_base__vtable vtable_for__wuffs_base__hasher_bitvec256;
-     wuffs_base__vtable null_vtable;
- 
--    uint32_t f_width;
--    uint32_t f_height;
--    uint8_t f_call_sequence;
--    uint64_t f_frame_config_io_position;
--    wuffs_base__pixel_swizzler f_swizzler;
--
--    uint32_t p_decode_image_config[1];
--    uint32_t p_do_decode_image_config[1];
--    uint32_t p_decode_frame_config[1];
--    uint32_t p_do_decode_frame_config[1];
--    uint32_t p_decode_frame[1];
--    uint32_t p_do_decode_frame[1];
-+    uint64_t f_length_modulo_u64;
-+    bool f_length_overflows_u64;
-+    uint8_t f_padding0;
-+    uint8_t f_padding1;
-+    uint8_t f_padding2;
-+    uint32_t f_buf_len;
-+    uint8_t f_buf_data[64];
-+    uint32_t f_h0;
-+    uint32_t f_h1;
-+    uint32_t f_h2;
-+    uint32_t f_h3;
-+    uint32_t f_h4;
-+    uint32_t f_h5;
-+    uint32_t f_h6;
-+    uint32_t f_h7;
-   } private_impl;
- 
--  struct {
--    struct {
--      uint32_t v_i;
--      uint32_t v_p;
--    } s_do_decode_image_config[1];
--    struct {
--      uint64_t v_dst_bytes_per_pixel;
--      uint32_t v_dst_x;
--      uint32_t v_dst_y;
--      uint8_t v_src[1];
--      uint8_t v_c;
--    } s_do_decode_frame[1];
--  } private_data;
--
- #ifdef __cplusplus
- #if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
--  using unique_ptr = std::unique_ptr<wuffs_wbmp__decoder, wuffs_unique_ptr_deleter>;
-+  using unique_ptr = std::unique_ptr<wuffs_sha256__hasher, wuffs_unique_ptr_deleter>;
- 
-   // On failure, the alloc_etc functions return nullptr. They don't throw.
- 
-   static inline unique_ptr
-   alloc() {
--    return unique_ptr(wuffs_wbmp__decoder__alloc());
-+    return unique_ptr(wuffs_sha256__hasher__alloc());
-   }
- 
--  static inline wuffs_base__image_decoder::unique_ptr
--  alloc_as__wuffs_base__image_decoder() {
--    return wuffs_base__image_decoder::unique_ptr(
--        wuffs_wbmp__decoder__alloc_as__wuffs_base__image_decoder());
-+  static inline wuffs_base__hasher_bitvec256::unique_ptr
-+  alloc_as__wuffs_base__hasher_bitvec256() {
-+    return wuffs_base__hasher_bitvec256::unique_ptr(
-+        wuffs_sha256__hasher__alloc_as__wuffs_base__hasher_bitvec256());
-   }
- #endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
- 
-@@ -12309,10 +13274,10 @@ struct wuffs_wbmp__decoder__struct {
-   // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
-   // order to provide convenience methods. These forward on "this", so that you
-   // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
--  wuffs_wbmp__decoder__struct() = delete;
--  wuffs_wbmp__decoder__struct(const wuffs_wbmp__decoder__struct&) = delete;
--  wuffs_wbmp__decoder__struct& operator=(
--      const wuffs_wbmp__decoder__struct&) = delete;
-+  wuffs_sha256__hasher__struct() = delete;
-+  wuffs_sha256__hasher__struct(const wuffs_sha256__hasher__struct&) = delete;
-+  wuffs_sha256__hasher__struct& operator=(
-+      const wuffs_sha256__hasher__struct&) = delete;
- #endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
- 
- #if !defined(WUFFS_IMPLEMENTATION)
-@@ -12332,120 +13297,68 @@ struct wuffs_wbmp__decoder__struct {
-       size_t sizeof_star_self,
-       uint64_t wuffs_version,
-       uint32_t options) {
--    return wuffs_wbmp__decoder__initialize(
-+    return wuffs_sha256__hasher__initialize(
-         this, sizeof_star_self, wuffs_version, options);
-   }
- 
--  inline wuffs_base__image_decoder*
--  upcast_as__wuffs_base__image_decoder() {
--    return (wuffs_base__image_decoder*)this;
-+  inline wuffs_base__hasher_bitvec256*
-+  upcast_as__wuffs_base__hasher_bitvec256() {
-+    return (wuffs_base__hasher_bitvec256*)this;
-   }
- 
-   inline uint64_t
-   get_quirk(
-       uint32_t a_key) const {
--    return wuffs_wbmp__decoder__get_quirk(this, a_key);
-+    return wuffs_sha256__hasher__get_quirk(this, a_key);
-   }
- 
-   inline wuffs_base__status
-   set_quirk(
-       uint32_t a_key,
-       uint64_t a_value) {
--    return wuffs_wbmp__decoder__set_quirk(this, a_key, a_value);
--  }
--
--  inline wuffs_base__status
--  decode_image_config(
--      wuffs_base__image_config* a_dst,
--      wuffs_base__io_buffer* a_src) {
--    return wuffs_wbmp__decoder__decode_image_config(this, a_dst, a_src);
--  }
--
--  inline wuffs_base__status
--  decode_frame_config(
--      wuffs_base__frame_config* a_dst,
--      wuffs_base__io_buffer* a_src) {
--    return wuffs_wbmp__decoder__decode_frame_config(this, a_dst, a_src);
--  }
--
--  inline wuffs_base__status
--  decode_frame(
--      wuffs_base__pixel_buffer* a_dst,
--      wuffs_base__io_buffer* a_src,
--      wuffs_base__pixel_blend a_blend,
--      wuffs_base__slice_u8 a_workbuf,
--      wuffs_base__decode_frame_options* a_opts) {
--    return wuffs_wbmp__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
--  }
--
--  inline wuffs_base__rect_ie_u32
--  frame_dirty_rect() const {
--    return wuffs_wbmp__decoder__frame_dirty_rect(this);
--  }
--
--  inline uint32_t
--  num_animation_loops() const {
--    return wuffs_wbmp__decoder__num_animation_loops(this);
--  }
--
--  inline uint64_t
--  num_decoded_frame_configs() const {
--    return wuffs_wbmp__decoder__num_decoded_frame_configs(this);
--  }
--
--  inline uint64_t
--  num_decoded_frames() const {
--    return wuffs_wbmp__decoder__num_decoded_frames(this);
--  }
--
--  inline wuffs_base__status
--  restart_frame(
--      uint64_t a_index,
--      uint64_t a_io_position) {
--    return wuffs_wbmp__decoder__restart_frame(this, a_index, a_io_position);
-+    return wuffs_sha256__hasher__set_quirk(this, a_key, a_value);
-   }
- 
-   inline wuffs_base__empty_struct
--  set_report_metadata(
--      uint32_t a_fourcc,
--      bool a_report) {
--    return wuffs_wbmp__decoder__set_report_metadata(this, a_fourcc, a_report);
--  }
--
--  inline wuffs_base__status
--  tell_me_more(
--      wuffs_base__io_buffer* a_dst,
--      wuffs_base__more_information* a_minfo,
--      wuffs_base__io_buffer* a_src) {
--    return wuffs_wbmp__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
-+  update(
-+      wuffs_base__slice_u8 a_x) {
-+    return wuffs_sha256__hasher__update(this, a_x);
-   }
- 
--  inline uint64_t
--  history_retain_length() const {
--    return wuffs_wbmp__decoder__history_retain_length(this);
-+  inline wuffs_base__bitvec256
-+  update_bitvec256(
-+      wuffs_base__slice_u8 a_x) {
-+    return wuffs_sha256__hasher__update_bitvec256(this, a_x);
-   }
- 
--  inline wuffs_base__range_ii_u64
--  workbuf_len() const {
--    return wuffs_wbmp__decoder__workbuf_len(this);
-+  inline wuffs_base__bitvec256
-+  checksum_bitvec256() const {
-+    return wuffs_sha256__hasher__checksum_bitvec256(this);
-   }
- 
- #endif  // __cplusplus
--};  // struct wuffs_wbmp__decoder__struct
-+};  // struct wuffs_sha256__hasher__struct
- 
- #endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP) || defined(WUFFS_NONMONOLITHIC)
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__SHA256) || defined(WUFFS_NONMONOLITHIC)
- 
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH32) || defined(WUFFS_NONMONOLITHIC)
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA) || defined(WUFFS_NONMONOLITHIC)
- 
- // ---------------- Status Codes
- 
-+extern const char wuffs_tga__error__bad_header[];
-+extern const char wuffs_tga__error__bad_run_length_encoding[];
-+extern const char wuffs_tga__error__truncated_input[];
-+extern const char wuffs_tga__error__unsupported_tga_file[];
-+
- // ---------------- Public Consts
- 
-+#define WUFFS_TGA__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
-+
- // ---------------- Struct Declarations
- 
--typedef struct wuffs_xxhash32__hasher__struct wuffs_xxhash32__hasher;
-+typedef struct wuffs_tga__decoder__struct wuffs_tga__decoder;
- 
- #ifdef __cplusplus
- extern "C" {
-@@ -12460,14 +13373,14 @@ extern "C" {
- // Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
- 
- wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_xxhash32__hasher__initialize(
--    wuffs_xxhash32__hasher* self,
-+wuffs_tga__decoder__initialize(
-+    wuffs_tga__decoder* self,
-     size_t sizeof_star_self,
-     uint64_t wuffs_version,
-     uint32_t options);
- 
- size_t
--sizeof__wuffs_xxhash32__hasher(void);
-+sizeof__wuffs_tga__decoder(void);
- 
- // ---------------- Allocs
- 
-@@ -12477,53 +13390,107 @@ sizeof__wuffs_xxhash32__hasher(void);
- // calling free on the returned pointer. That pointer is effectively a C++
- // std::unique_ptr<T, wuffs_unique_ptr_deleter>.
- 
--wuffs_xxhash32__hasher*
--wuffs_xxhash32__hasher__alloc(void);
-+wuffs_tga__decoder*
-+wuffs_tga__decoder__alloc(void);
- 
--static inline wuffs_base__hasher_u32*
--wuffs_xxhash32__hasher__alloc_as__wuffs_base__hasher_u32(void) {
--  return (wuffs_base__hasher_u32*)(wuffs_xxhash32__hasher__alloc());
-+static inline wuffs_base__image_decoder*
-+wuffs_tga__decoder__alloc_as__wuffs_base__image_decoder(void) {
-+  return (wuffs_base__image_decoder*)(wuffs_tga__decoder__alloc());
- }
- 
- // ---------------- Upcasts
- 
--static inline wuffs_base__hasher_u32*
--wuffs_xxhash32__hasher__upcast_as__wuffs_base__hasher_u32(
--    wuffs_xxhash32__hasher* p) {
--  return (wuffs_base__hasher_u32*)p;
-+static inline wuffs_base__image_decoder*
-+wuffs_tga__decoder__upcast_as__wuffs_base__image_decoder(
-+    wuffs_tga__decoder* p) {
-+  return (wuffs_base__image_decoder*)p;
- }
- 
- // ---------------- Public Function Prototypes
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_xxhash32__hasher__get_quirk(
--    const wuffs_xxhash32__hasher* self,
-+wuffs_tga__decoder__get_quirk(
-+    const wuffs_tga__decoder* self,
-     uint32_t a_key);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_xxhash32__hasher__set_quirk(
--    wuffs_xxhash32__hasher* self,
-+wuffs_tga__decoder__set_quirk(
-+    wuffs_tga__decoder* self,
-     uint32_t a_key,
-     uint64_t a_value);
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_xxhash32__hasher__update(
--    wuffs_xxhash32__hasher* self,
--    wuffs_base__slice_u8 a_x);
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_tga__decoder__decode_image_config(
-+    wuffs_tga__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_xxhash32__hasher__update_u32(
--    wuffs_xxhash32__hasher* self,
--    wuffs_base__slice_u8 a_x);
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_tga__decoder__decode_frame_config(
-+    wuffs_tga__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_tga__decoder__decode_frame(
-+    wuffs_tga__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
-+wuffs_tga__decoder__frame_dirty_rect(
-+    const wuffs_tga__decoder* self);
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_xxhash32__hasher__checksum_u32(
--    const wuffs_xxhash32__hasher* self);
-+wuffs_tga__decoder__num_animation_loops(
-+    const wuffs_tga__decoder* self);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_tga__decoder__num_decoded_frame_configs(
-+    const wuffs_tga__decoder* self);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_tga__decoder__num_decoded_frames(
-+    const wuffs_tga__decoder* self);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_tga__decoder__restart_frame(
-+    wuffs_tga__decoder* self,
-+    uint64_t a_index,
-+    uint64_t a_io_position);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_tga__decoder__set_report_metadata(
-+    wuffs_tga__decoder* self,
-+    uint32_t a_fourcc,
-+    bool a_report);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_tga__decoder__tell_me_more(
-+    wuffs_tga__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__more_information* a_minfo,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_tga__decoder__workbuf_len(
-+    const wuffs_tga__decoder* self);
- 
- #ifdef __cplusplus
- }  // extern "C"
-@@ -12538,7 +13505,7 @@ wuffs_xxhash32__hasher__checksum_u32(
- 
- #if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
- 
--struct wuffs_xxhash32__hasher__struct {
-+struct wuffs_tga__decoder__struct {
-   // Do not access the private_impl's or private_data's fields directly. There
-   // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
-   // the wuffs_foo__bar__baz functions.
-@@ -12549,36 +13516,72 @@ struct wuffs_xxhash32__hasher__struct {
-   struct {
-     uint32_t magic;
-     uint32_t active_coroutine;
--    wuffs_base__vtable vtable_for__wuffs_base__hasher_u32;
-+    wuffs_base__vtable vtable_for__wuffs_base__image_decoder;
-     wuffs_base__vtable null_vtable;
- 
--    uint32_t f_length_modulo_u32;
--    bool f_length_overflows_u32;
--    uint8_t f_padding0;
--    uint8_t f_padding1;
--    uint8_t f_buf_len;
--    uint8_t f_buf_data[16];
--    uint32_t f_v0;
--    uint32_t f_v1;
--    uint32_t f_v2;
--    uint32_t f_v3;
-+    uint32_t f_width;
-+    uint32_t f_height;
-+    uint8_t f_call_sequence;
-+    uint8_t f_header_id_length;
-+    uint8_t f_header_color_map_type;
-+    uint8_t f_header_image_type;
-+    uint16_t f_header_color_map_first_entry_index;
-+    uint16_t f_header_color_map_length;
-+    uint8_t f_header_color_map_entry_size;
-+    uint8_t f_header_pixel_depth;
-+    uint8_t f_header_image_descriptor;
-+    bool f_opaque;
-+    uint32_t f_scratch_bytes_per_pixel;
-+    uint32_t f_src_bytes_per_pixel;
-+    uint32_t f_src_pixfmt;
-+    uint64_t f_frame_config_io_position;
-+    wuffs_base__pixel_swizzler f_swizzler;
-+
-+    uint32_t p_decode_image_config;
-+    uint32_t p_do_decode_image_config;
-+    uint32_t p_decode_frame_config;
-+    uint32_t p_do_decode_frame_config;
-+    uint32_t p_decode_frame;
-+    uint32_t p_do_decode_frame;
-   } private_impl;
- 
-+  struct {
-+    uint8_t f_dst_palette[1024];
-+    uint8_t f_src_palette[1024];
-+    uint8_t f_scratch[4];
-+
-+    struct {
-+      uint32_t v_i;
-+      uint64_t scratch;
-+    } s_do_decode_image_config;
-+    struct {
-+      uint64_t v_dst_bytes_per_pixel;
-+      uint32_t v_dst_x;
-+      uint32_t v_dst_y;
-+      uint64_t v_mark;
-+      uint32_t v_num_pixels32;
-+      uint32_t v_lit_length;
-+      uint32_t v_run_length;
-+      uint64_t v_num_dst_bytes;
-+      uint64_t scratch;
-+    } s_do_decode_frame;
-+  } private_data;
-+
- #ifdef __cplusplus
- #if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
--  using unique_ptr = std::unique_ptr<wuffs_xxhash32__hasher, wuffs_unique_ptr_deleter>;
-+  using unique_ptr = std::unique_ptr<wuffs_tga__decoder, wuffs_unique_ptr_deleter>;
- 
-   // On failure, the alloc_etc functions return nullptr. They don't throw.
- 
-   static inline unique_ptr
-   alloc() {
--    return unique_ptr(wuffs_xxhash32__hasher__alloc());
-+    return unique_ptr(wuffs_tga__decoder__alloc());
-   }
- 
--  static inline wuffs_base__hasher_u32::unique_ptr
--  alloc_as__wuffs_base__hasher_u32() {
--    return wuffs_base__hasher_u32::unique_ptr(
--        wuffs_xxhash32__hasher__alloc_as__wuffs_base__hasher_u32());
-+  static inline wuffs_base__image_decoder::unique_ptr
-+  alloc_as__wuffs_base__image_decoder() {
-+    return wuffs_base__image_decoder::unique_ptr(
-+        wuffs_tga__decoder__alloc_as__wuffs_base__image_decoder());
-   }
- #endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
- 
-@@ -12594,10 +13597,10 @@ struct wuffs_xxhash32__hasher__struct {
-   // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
-   // order to provide convenience methods. These forward on "this", so that you
-   // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
--  wuffs_xxhash32__hasher__struct() = delete;
--  wuffs_xxhash32__hasher__struct(const wuffs_xxhash32__hasher__struct&) = delete;
--  wuffs_xxhash32__hasher__struct& operator=(
--      const wuffs_xxhash32__hasher__struct&) = delete;
-+  wuffs_tga__decoder__struct() = delete;
-+  wuffs_tga__decoder__struct(const wuffs_tga__decoder__struct&) = delete;
-+  wuffs_tga__decoder__struct& operator=(
-+      const wuffs_tga__decoder__struct&) = delete;
- #endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
- 
- #if !defined(WUFFS_IMPLEMENTATION)
-@@ -12617,53 +13620,107 @@ struct wuffs_xxhash32__hasher__struct {
-       size_t sizeof_star_self,
-       uint64_t wuffs_version,
-       uint32_t options) {
--    return wuffs_xxhash32__hasher__initialize(
-+    return wuffs_tga__decoder__initialize(
-         this, sizeof_star_self, wuffs_version, options);
-   }
- 
--  inline wuffs_base__hasher_u32*
--  upcast_as__wuffs_base__hasher_u32() {
--    return (wuffs_base__hasher_u32*)this;
-+  inline wuffs_base__image_decoder*
-+  upcast_as__wuffs_base__image_decoder() {
-+    return (wuffs_base__image_decoder*)this;
-   }
- 
-   inline uint64_t
-   get_quirk(
-       uint32_t a_key) const {
--    return wuffs_xxhash32__hasher__get_quirk(this, a_key);
-+    return wuffs_tga__decoder__get_quirk(this, a_key);
-   }
- 
-   inline wuffs_base__status
-   set_quirk(
-       uint32_t a_key,
-       uint64_t a_value) {
--    return wuffs_xxhash32__hasher__set_quirk(this, a_key, a_value);
-+    return wuffs_tga__decoder__set_quirk(this, a_key, a_value);
-   }
- 
--  inline wuffs_base__empty_struct
--  update(
--      wuffs_base__slice_u8 a_x) {
--    return wuffs_xxhash32__hasher__update(this, a_x);
-+  inline wuffs_base__status
-+  decode_image_config(
-+      wuffs_base__image_config* a_dst,
-+      wuffs_base__io_buffer* a_src) {
-+    return wuffs_tga__decoder__decode_image_config(this, a_dst, a_src);
-   }
- 
--  inline uint32_t
--  update_u32(
--      wuffs_base__slice_u8 a_x) {
--    return wuffs_xxhash32__hasher__update_u32(this, a_x);
-+  inline wuffs_base__status
-+  decode_frame_config(
-+      wuffs_base__frame_config* a_dst,
-+      wuffs_base__io_buffer* a_src) {
-+    return wuffs_tga__decoder__decode_frame_config(this, a_dst, a_src);
-+  }
-+
-+  inline wuffs_base__status
-+  decode_frame(
-+      wuffs_base__pixel_buffer* a_dst,
-+      wuffs_base__io_buffer* a_src,
-+      wuffs_base__pixel_blend a_blend,
-+      wuffs_base__slice_u8 a_workbuf,
-+      wuffs_base__decode_frame_options* a_opts) {
-+    return wuffs_tga__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
-+  }
-+
-+  inline wuffs_base__rect_ie_u32
-+  frame_dirty_rect() const {
-+    return wuffs_tga__decoder__frame_dirty_rect(this);
-   }
- 
-   inline uint32_t
--  checksum_u32() const {
--    return wuffs_xxhash32__hasher__checksum_u32(this);
-+  num_animation_loops() const {
-+    return wuffs_tga__decoder__num_animation_loops(this);
-+  }
-+
-+  inline uint64_t
-+  num_decoded_frame_configs() const {
-+    return wuffs_tga__decoder__num_decoded_frame_configs(this);
-+  }
-+
-+  inline uint64_t
-+  num_decoded_frames() const {
-+    return wuffs_tga__decoder__num_decoded_frames(this);
-+  }
-+
-+  inline wuffs_base__status
-+  restart_frame(
-+      uint64_t a_index,
-+      uint64_t a_io_position) {
-+    return wuffs_tga__decoder__restart_frame(this, a_index, a_io_position);
-+  }
-+
-+  inline wuffs_base__empty_struct
-+  set_report_metadata(
-+      uint32_t a_fourcc,
-+      bool a_report) {
-+    return wuffs_tga__decoder__set_report_metadata(this, a_fourcc, a_report);
-+  }
-+
-+  inline wuffs_base__status
-+  tell_me_more(
-+      wuffs_base__io_buffer* a_dst,
-+      wuffs_base__more_information* a_minfo,
-+      wuffs_base__io_buffer* a_src) {
-+    return wuffs_tga__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
-+  }
-+
-+  inline wuffs_base__range_ii_u64
-+  workbuf_len() const {
-+    return wuffs_tga__decoder__workbuf_len(this);
-   }
- 
- #endif  // __cplusplus
--};  // struct wuffs_xxhash32__hasher__struct
-+};  // struct wuffs_tga__decoder__struct
- 
- #endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH32) || defined(WUFFS_NONMONOLITHIC)
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA) || defined(WUFFS_NONMONOLITHIC)
- 
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH64) || defined(WUFFS_NONMONOLITHIC)
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__VP8) || defined(WUFFS_NONMONOLITHIC)
- 
- // ---------------- Status Codes
- 
-@@ -12671,7 +13728,7 @@ struct wuffs_xxhash32__hasher__struct {
- 
- // ---------------- Struct Declarations
- 
--typedef struct wuffs_xxhash64__hasher__struct wuffs_xxhash64__hasher;
-+typedef struct wuffs_vp8__placeholder__struct wuffs_vp8__placeholder;
- 
- #ifdef __cplusplus
- extern "C" {
-@@ -12686,14 +13743,14 @@ extern "C" {
- // Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
- 
- wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_xxhash64__hasher__initialize(
--    wuffs_xxhash64__hasher* self,
-+wuffs_vp8__placeholder__initialize(
-+    wuffs_vp8__placeholder* self,
-     size_t sizeof_star_self,
-     uint64_t wuffs_version,
-     uint32_t options);
- 
- size_t
--sizeof__wuffs_xxhash64__hasher(void);
-+sizeof__wuffs_vp8__placeholder(void);
- 
- // ---------------- Allocs
- 
-@@ -12703,54 +13760,13 @@ sizeof__wuffs_xxhash64__hasher(void);
- // calling free on the returned pointer. That pointer is effectively a C++
- // std::unique_ptr<T, wuffs_unique_ptr_deleter>.
- 
--wuffs_xxhash64__hasher*
--wuffs_xxhash64__hasher__alloc(void);
--
--static inline wuffs_base__hasher_u64*
--wuffs_xxhash64__hasher__alloc_as__wuffs_base__hasher_u64(void) {
--  return (wuffs_base__hasher_u64*)(wuffs_xxhash64__hasher__alloc());
--}
-+wuffs_vp8__placeholder*
-+wuffs_vp8__placeholder__alloc(void);
- 
- // ---------------- Upcasts
- 
--static inline wuffs_base__hasher_u64*
--wuffs_xxhash64__hasher__upcast_as__wuffs_base__hasher_u64(
--    wuffs_xxhash64__hasher* p) {
--  return (wuffs_base__hasher_u64*)p;
--}
--
- // ---------------- Public Function Prototypes
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_xxhash64__hasher__get_quirk(
--    const wuffs_xxhash64__hasher* self,
--    uint32_t a_key);
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_xxhash64__hasher__set_quirk(
--    wuffs_xxhash64__hasher* self,
--    uint32_t a_key,
--    uint64_t a_value);
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_xxhash64__hasher__update(
--    wuffs_xxhash64__hasher* self,
--    wuffs_base__slice_u8 a_x);
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_xxhash64__hasher__update_u64(
--    wuffs_xxhash64__hasher* self,
--    wuffs_base__slice_u8 a_x);
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_xxhash64__hasher__checksum_u64(
--    const wuffs_xxhash64__hasher* self);
--
- #ifdef __cplusplus
- }  // extern "C"
- #endif
-@@ -12764,7 +13780,7 @@ wuffs_xxhash64__hasher__checksum_u64(
- 
- #if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
- 
--struct wuffs_xxhash64__hasher__struct {
-+struct wuffs_vp8__placeholder__struct {
-   // Do not access the private_impl's or private_data's fields directly. There
-   // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
-   // the wuffs_foo__bar__baz functions.
-@@ -12775,37 +13791,20 @@ struct wuffs_xxhash64__hasher__struct {
-   struct {
-     uint32_t magic;
-     uint32_t active_coroutine;
--    wuffs_base__vtable vtable_for__wuffs_base__hasher_u64;
-     wuffs_base__vtable null_vtable;
- 
--    uint64_t f_length_modulo_u64;
--    bool f_length_overflows_u64;
--    uint8_t f_padding0;
--    uint8_t f_padding1;
--    uint8_t f_padding2;
--    uint32_t f_buf_len;
--    uint8_t f_buf_data[32];
--    uint64_t f_v0;
--    uint64_t f_v1;
--    uint64_t f_v2;
--    uint64_t f_v3;
-+    uint32_t f_placeholder;
-   } private_impl;
- 
- #ifdef __cplusplus
- #if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
--  using unique_ptr = std::unique_ptr<wuffs_xxhash64__hasher, wuffs_unique_ptr_deleter>;
-+  using unique_ptr = std::unique_ptr<wuffs_vp8__placeholder, wuffs_unique_ptr_deleter>;
- 
-   // On failure, the alloc_etc functions return nullptr. They don't throw.
- 
-   static inline unique_ptr
-   alloc() {
--    return unique_ptr(wuffs_xxhash64__hasher__alloc());
--  }
--
--  static inline wuffs_base__hasher_u64::unique_ptr
--  alloc_as__wuffs_base__hasher_u64() {
--    return wuffs_base__hasher_u64::unique_ptr(
--        wuffs_xxhash64__hasher__alloc_as__wuffs_base__hasher_u64());
-+    return unique_ptr(wuffs_vp8__placeholder__alloc());
-   }
- #endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
- 
-@@ -12821,10 +13820,10 @@ struct wuffs_xxhash64__hasher__struct {
-   // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
-   // order to provide convenience methods. These forward on "this", so that you
-   // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
--  wuffs_xxhash64__hasher__struct() = delete;
--  wuffs_xxhash64__hasher__struct(const wuffs_xxhash64__hasher__struct&) = delete;
--  wuffs_xxhash64__hasher__struct& operator=(
--      const wuffs_xxhash64__hasher__struct&) = delete;
-+  wuffs_vp8__placeholder__struct() = delete;
-+  wuffs_vp8__placeholder__struct(const wuffs_vp8__placeholder__struct&) = delete;
-+  wuffs_vp8__placeholder__struct& operator=(
-+      const wuffs_vp8__placeholder__struct&) = delete;
- #endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
- 
- #if !defined(WUFFS_IMPLEMENTATION)
-@@ -12844,9372 +13843,9377 @@ struct wuffs_xxhash64__hasher__struct {
-       size_t sizeof_star_self,
-       uint64_t wuffs_version,
-       uint32_t options) {
--    return wuffs_xxhash64__hasher__initialize(
-+    return wuffs_vp8__placeholder__initialize(
-         this, sizeof_star_self, wuffs_version, options);
-   }
- 
--  inline wuffs_base__hasher_u64*
--  upcast_as__wuffs_base__hasher_u64() {
--    return (wuffs_base__hasher_u64*)this;
--  }
-+#endif  // __cplusplus
-+};  // struct wuffs_vp8__placeholder__struct
- 
--  inline uint64_t
--  get_quirk(
--      uint32_t a_key) const {
--    return wuffs_xxhash64__hasher__get_quirk(this, a_key);
--  }
-+#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
- 
--  inline wuffs_base__status
--  set_quirk(
--      uint32_t a_key,
--      uint64_t a_value) {
--    return wuffs_xxhash64__hasher__set_quirk(this, a_key, a_value);
--  }
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__VP8) || defined(WUFFS_NONMONOLITHIC)
- 
--  inline wuffs_base__empty_struct
--  update(
--      wuffs_base__slice_u8 a_x) {
--    return wuffs_xxhash64__hasher__update(this, a_x);
--  }
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP) || defined(WUFFS_NONMONOLITHIC)
- 
--  inline uint64_t
--  update_u64(
--      wuffs_base__slice_u8 a_x) {
--    return wuffs_xxhash64__hasher__update_u64(this, a_x);
--  }
-+// ---------------- Status Codes
- 
--  inline uint64_t
--  checksum_u64() const {
--    return wuffs_xxhash64__hasher__checksum_u64(this);
--  }
-+extern const char wuffs_wbmp__error__bad_header[];
-+extern const char wuffs_wbmp__error__truncated_input[];
- 
--#endif  // __cplusplus
--};  // struct wuffs_xxhash64__hasher__struct
-+// ---------------- Public Consts
- 
--#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
-+#define WUFFS_WBMP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH64) || defined(WUFFS_NONMONOLITHIC)
-+// ---------------- Struct Declarations
- 
--#if defined(__cplusplus) && defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
-+typedef struct wuffs_wbmp__decoder__struct wuffs_wbmp__decoder;
- 
--// ---------------- Auxiliary - Base
-+#ifdef __cplusplus
-+extern "C" {
-+#endif
- 
--// Auxiliary code is discussed at
--// https://github.com/google/wuffs/blob/main/doc/note/auxiliary-code.md
-+// ---------------- Public Initializer Prototypes
- 
--#include <stdio.h>
-+// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
-+// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
-+//
-+// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
-+// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
- 
--#include <string>
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_wbmp__decoder__initialize(
-+    wuffs_wbmp__decoder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options);
- 
--namespace wuffs_aux {
-+size_t
-+sizeof__wuffs_wbmp__decoder(void);
- 
--using IOBuffer = wuffs_base__io_buffer;
-+// ---------------- Allocs
- 
--// MemOwner represents ownership of some memory. Dynamically allocated memory
--// (e.g. from malloc or new) is typically paired with free or delete, invoked
--// when the std::unique_ptr is destroyed. Statically allocated memory might use
--// MemOwner(nullptr, &free), even if that statically allocated memory is not
--// nullptr, since calling free(nullptr) is a no-op.
--using MemOwner = std::unique_ptr<void, decltype(&free)>;
-+// These functions allocate and initialize Wuffs structs. They return NULL if
-+// memory allocation fails. If they return non-NULL, there is no need to call
-+// wuffs_foo__bar__initialize, but the caller is responsible for eventually
-+// calling free on the returned pointer. That pointer is effectively a C++
-+// std::unique_ptr<T, wuffs_unique_ptr_deleter>.
- 
--namespace sync_io {
-+wuffs_wbmp__decoder*
-+wuffs_wbmp__decoder__alloc(void);
- 
--// --------
-+static inline wuffs_base__image_decoder*
-+wuffs_wbmp__decoder__alloc_as__wuffs_base__image_decoder(void) {
-+  return (wuffs_base__image_decoder*)(wuffs_wbmp__decoder__alloc());
-+}
- 
--// DynIOBuffer is an IOBuffer that is backed by a dynamically sized byte array.
--// It owns that backing array and will free it in its destructor.
--//
--// The array size can be explicitly extended (by calling the grow method) but,
--// unlike a C++ std::vector, there is no implicit extension (e.g. by calling
--// std::vector::insert) and its maximum size is capped by the max_incl
--// constructor argument.
--//
--// It contains an IOBuffer-typed field whose reader side provides access to
--// previously written bytes and whose writer side provides access to the
--// allocated but not-yet-written-to slack space. For Go programmers, this slack
--// space is roughly analogous to the s[len(s):cap(s)] space of a slice s.
--class DynIOBuffer {
-- public:
--  enum GrowResult {
--    OK = 0,
--    FailedMaxInclExceeded = 1,
--    FailedOutOfMemory = 2,
--  };
-+// ---------------- Upcasts
- 
--  // m_buf holds the dynamically sized byte array and its read/write indexes:
--  //  - m_buf.meta.wi  is roughly analogous to a Go slice's length.
--  //  - m_buf.data.len is roughly analogous to a Go slice's capacity. It is
--  //    also equal to the m_buf.data.ptr malloc/realloc size.
--  //
--  // Users should not modify the m_buf.data.ptr or m_buf.data.len fields (as
--  // they are conceptually private to this class), but they can modify the
--  // bytes referenced by that pointer-length pair (e.g. compactions).
--  IOBuffer m_buf;
-+static inline wuffs_base__image_decoder*
-+wuffs_wbmp__decoder__upcast_as__wuffs_base__image_decoder(
-+    wuffs_wbmp__decoder* p) {
-+  return (wuffs_base__image_decoder*)p;
-+}
- 
--  // m_max_incl is an inclusive upper bound on the backing array size.
--  const uint64_t m_max_incl;
-+// ---------------- Public Function Prototypes
- 
--  // Constructor and destructor.
--  explicit DynIOBuffer(uint64_t max_incl);
--  ~DynIOBuffer();
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_wbmp__decoder__get_quirk(
-+    const wuffs_wbmp__decoder* self,
-+    uint32_t a_key);
- 
--  // Drop frees the byte array and resets m_buf. The DynIOBuffer can still be
--  // used after a drop call. It just restarts from zero.
--  void drop();
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_wbmp__decoder__set_quirk(
-+    wuffs_wbmp__decoder* self,
-+    uint32_t a_key,
-+    uint64_t a_value);
- 
--  // grow ensures that the byte array size is at least min_incl and at most
--  // max_incl. It returns FailedMaxInclExceeded if that would require
--  // allocating more than max_incl bytes, including the case where (min_incl >
--  // max_incl). It returns FailedOutOfMemory if memory allocation failed.
--  GrowResult grow(uint64_t min_incl);
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_wbmp__decoder__decode_image_config(
-+    wuffs_wbmp__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
- 
-- private:
--  // Delete the copy and assign constructors.
--  DynIOBuffer(const DynIOBuffer&) = delete;
--  DynIOBuffer& operator=(const DynIOBuffer&) = delete;
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_wbmp__decoder__decode_frame_config(
-+    wuffs_wbmp__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
- 
--  static uint64_t round_up(uint64_t min_incl, uint64_t max_incl);
--};
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_wbmp__decoder__decode_frame(
-+    wuffs_wbmp__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts);
- 
--// --------
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
-+wuffs_wbmp__decoder__frame_dirty_rect(
-+    const wuffs_wbmp__decoder* self);
- 
--class Input {
-- public:
--  virtual ~Input();
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_wbmp__decoder__num_animation_loops(
-+    const wuffs_wbmp__decoder* self);
- 
--  virtual IOBuffer* BringsItsOwnIOBuffer();
--  virtual std::string CopyIn(IOBuffer* dst, uint64_t history_retain_length) = 0;
--};
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_wbmp__decoder__num_decoded_frame_configs(
-+    const wuffs_wbmp__decoder* self);
- 
--// --------
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_wbmp__decoder__num_decoded_frames(
-+    const wuffs_wbmp__decoder* self);
- 
--// FileInput is an Input that reads from a file source.
--//
--// It does not take responsibility for closing the file when done.
--class FileInput : public Input {
-- public:
--  FileInput(FILE* f);
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_wbmp__decoder__restart_frame(
-+    wuffs_wbmp__decoder* self,
-+    uint64_t a_index,
-+    uint64_t a_io_position);
- 
--  virtual std::string CopyIn(IOBuffer* dst, uint64_t history_retain_length);
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_wbmp__decoder__set_report_metadata(
-+    wuffs_wbmp__decoder* self,
-+    uint32_t a_fourcc,
-+    bool a_report);
- 
-- private:
--  FILE* m_f;
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_wbmp__decoder__tell_me_more(
-+    wuffs_wbmp__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__more_information* a_minfo,
-+    wuffs_base__io_buffer* a_src);
- 
--  // Delete the copy and assign constructors.
--  FileInput(const FileInput&) = delete;
--  FileInput& operator=(const FileInput&) = delete;
--};
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_wbmp__decoder__workbuf_len(
-+    const wuffs_wbmp__decoder* self);
- 
--// --------
-+#ifdef __cplusplus
-+}  // extern "C"
-+#endif
- 
--// MemoryInput is an Input that reads from an in-memory source.
-+// ---------------- Struct Definitions
-+
-+// These structs' fields, and the sizeof them, are private implementation
-+// details that aren't guaranteed to be stable across Wuffs versions.
- //
--// It does not take responsibility for freeing the memory when done.
--class MemoryInput : public Input {
-- public:
--  MemoryInput(const char* ptr, size_t len);
--  MemoryInput(const uint8_t* ptr, size_t len);
-+// See https://en.wikipedia.org/wiki/Opaque_pointer#C
- 
--  virtual IOBuffer* BringsItsOwnIOBuffer();
--  virtual std::string CopyIn(IOBuffer* dst, uint64_t history_retain_length);
-+#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
- 
-- private:
--  IOBuffer m_io;
-+struct wuffs_wbmp__decoder__struct {
-+  // Do not access the private_impl's or private_data's fields directly. There
-+  // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
-+  // the wuffs_foo__bar__baz functions.
-+  //
-+  // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
-+  // can be stack allocated when WUFFS_IMPLEMENTATION is defined.
- 
--  // Delete the copy and assign constructors.
--  MemoryInput(const MemoryInput&) = delete;
--  MemoryInput& operator=(const MemoryInput&) = delete;
--};
-+  struct {
-+    uint32_t magic;
-+    uint32_t active_coroutine;
-+    wuffs_base__vtable vtable_for__wuffs_base__image_decoder;
-+    wuffs_base__vtable null_vtable;
- 
--// --------
-+    uint32_t f_width;
-+    uint32_t f_height;
-+    uint8_t f_call_sequence;
-+    uint64_t f_frame_config_io_position;
-+    wuffs_base__pixel_swizzler f_swizzler;
- 
--}  // namespace sync_io
-+    uint32_t p_decode_image_config;
-+    uint32_t p_do_decode_image_config;
-+    uint32_t p_decode_frame_config;
-+    uint32_t p_do_decode_frame_config;
-+    uint32_t p_decode_frame;
-+    uint32_t p_do_decode_frame;
-+  } private_impl;
- 
--}  // namespace wuffs_aux
-+  struct {
-+    struct {
-+      uint32_t v_i;
-+      uint32_t v_p;
-+    } s_do_decode_image_config;
-+    struct {
-+      uint64_t v_dst_bytes_per_pixel;
-+      uint32_t v_dst_x;
-+      uint32_t v_dst_y;
-+      uint8_t v_src[1];
-+      uint8_t v_c8;
-+    } s_do_decode_frame;
-+  } private_data;
- 
--// ---------------- Auxiliary - CBOR
-+#ifdef __cplusplus
-+#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
-+  using unique_ptr = std::unique_ptr<wuffs_wbmp__decoder, wuffs_unique_ptr_deleter>;
- 
--namespace wuffs_aux {
-+  // On failure, the alloc_etc functions return nullptr. They don't throw.
- 
--struct DecodeCborResult {
--  DecodeCborResult(std::string&& error_message0, uint64_t cursor_position0);
-+  static inline unique_ptr
-+  alloc() {
-+    return unique_ptr(wuffs_wbmp__decoder__alloc());
-+  }
- 
--  std::string error_message;
--  uint64_t cursor_position;
--};
-+  static inline wuffs_base__image_decoder::unique_ptr
-+  alloc_as__wuffs_base__image_decoder() {
-+    return wuffs_base__image_decoder::unique_ptr(
-+        wuffs_wbmp__decoder__alloc_as__wuffs_base__image_decoder());
-+  }
-+#endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
- 
--class DecodeCborCallbacks {
-- public:
--  virtual ~DecodeCborCallbacks();
-+#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
-+  // Disallow constructing or copying an object via standard C++ mechanisms,
-+  // e.g. the "new" operator, as this struct is intentionally opaque. Its total
-+  // size and field layout is not part of the public, stable, memory-safe API.
-+  // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
-+  // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
-+  // their first argument) rather than tweaking bar.private_impl.qux fields.
-+  //
-+  // In C, we can just leave wuffs_foo__bar as an incomplete type (unless
-+  // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
-+  // order to provide convenience methods. These forward on "this", so that you
-+  // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
-+  wuffs_wbmp__decoder__struct() = delete;
-+  wuffs_wbmp__decoder__struct(const wuffs_wbmp__decoder__struct&) = delete;
-+  wuffs_wbmp__decoder__struct& operator=(
-+      const wuffs_wbmp__decoder__struct&) = delete;
-+#endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
- 
--  // AppendXxx are called for leaf nodes: literals, numbers, strings, etc.
-+#if !defined(WUFFS_IMPLEMENTATION)
-+  // As above, the size of the struct is not part of the public API, and unless
-+  // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
-+  // allocated, not stack allocated. Its size is not intended to be known at
-+  // compile time, but it is unfortunately divulged as a side effect of
-+  // defining C++ convenience methods. Use "sizeof__T()", calling the function,
-+  // instead of "sizeof T", invoking the operator. To make the two values
-+  // different, so that passing the latter will be rejected by the initialize
-+  // function, we add an arbitrary amount of dead weight.
-+  uint8_t dead_weight[123000000];  // 123 MB.
-+#endif  // !defined(WUFFS_IMPLEMENTATION)
- 
--  virtual std::string AppendNull() = 0;
--  virtual std::string AppendUndefined() = 0;
--  virtual std::string AppendBool(bool val) = 0;
--  virtual std::string AppendF64(double val) = 0;
--  virtual std::string AppendI64(int64_t val) = 0;
--  virtual std::string AppendU64(uint64_t val) = 0;
--  virtual std::string AppendByteString(std::string&& val) = 0;
--  virtual std::string AppendTextString(std::string&& val) = 0;
--  virtual std::string AppendMinus1MinusX(uint64_t val) = 0;
--  virtual std::string AppendCborSimpleValue(uint8_t val) = 0;
--  virtual std::string AppendCborTag(uint64_t val) = 0;
-+  inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+  initialize(
-+      size_t sizeof_star_self,
-+      uint64_t wuffs_version,
-+      uint32_t options) {
-+    return wuffs_wbmp__decoder__initialize(
-+        this, sizeof_star_self, wuffs_version, options);
-+  }
- 
--  // Push and Pop are called for container nodes: CBOR arrays (lists) and CBOR
--  // maps (dictionaries).
--  //
--  // The flags bits combine exactly one of:
--  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_NONE
--  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_LIST
--  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_DICT
--  // and exactly one of:
--  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE
--  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST
--  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT
-+  inline wuffs_base__image_decoder*
-+  upcast_as__wuffs_base__image_decoder() {
-+    return (wuffs_base__image_decoder*)this;
-+  }
- 
--  virtual std::string Push(uint32_t flags) = 0;
--  virtual std::string Pop(uint32_t flags) = 0;
-+  inline uint64_t
-+  get_quirk(
-+      uint32_t a_key) const {
-+    return wuffs_wbmp__decoder__get_quirk(this, a_key);
-+  }
- 
--  // Done is always the last Callback method called by DecodeCbor, whether or
--  // not parsing the input as CBOR encountered an error. Even when successful,
--  // trailing data may remain in input and buffer.
--  //
--  // Do not keep a reference to buffer or buffer.data.ptr after Done returns,
--  // as DecodeCbor may then de-allocate the backing array.
--  //
--  // The default Done implementation is a no-op.
--  virtual void  //
--  Done(DecodeCborResult& result, sync_io::Input& input, IOBuffer& buffer);
--};
-+  inline wuffs_base__status
-+  set_quirk(
-+      uint32_t a_key,
-+      uint64_t a_value) {
-+    return wuffs_wbmp__decoder__set_quirk(this, a_key, a_value);
-+  }
- 
--// The FooArgBar types add structure to Foo's optional arguments. They wrap
--// inner representations for several reasons:
--//  - It provides a home for the DefaultValue static method, for Foo callers
--//    that want to override some but not all optional arguments.
--//  - It provides the "Bar" name at Foo call sites, which can help self-
--//    document Foo calls with many arguemnts.
--//  - It provides some type safety against accidentally transposing or omitting
--//    adjacent fundamentally-numeric-typed optional arguments.
-+  inline wuffs_base__status
-+  decode_image_config(
-+      wuffs_base__image_config* a_dst,
-+      wuffs_base__io_buffer* a_src) {
-+    return wuffs_wbmp__decoder__decode_image_config(this, a_dst, a_src);
-+  }
- 
--// DecodeCborArgQuirks wraps an optional argument to DecodeCbor.
--struct DecodeCborArgQuirks {
--  explicit DecodeCborArgQuirks(wuffs_base__slice_u32 repr0);
--  explicit DecodeCborArgQuirks(uint32_t* ptr, size_t len);
-+  inline wuffs_base__status
-+  decode_frame_config(
-+      wuffs_base__frame_config* a_dst,
-+      wuffs_base__io_buffer* a_src) {
-+    return wuffs_wbmp__decoder__decode_frame_config(this, a_dst, a_src);
-+  }
- 
--  // DefaultValue returns an empty slice.
--  static DecodeCborArgQuirks DefaultValue();
-+  inline wuffs_base__status
-+  decode_frame(
-+      wuffs_base__pixel_buffer* a_dst,
-+      wuffs_base__io_buffer* a_src,
-+      wuffs_base__pixel_blend a_blend,
-+      wuffs_base__slice_u8 a_workbuf,
-+      wuffs_base__decode_frame_options* a_opts) {
-+    return wuffs_wbmp__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
-+  }
- 
--  wuffs_base__slice_u32 repr;
--};
-+  inline wuffs_base__rect_ie_u32
-+  frame_dirty_rect() const {
-+    return wuffs_wbmp__decoder__frame_dirty_rect(this);
-+  }
- 
--// DecodeCbor calls callbacks based on the CBOR-formatted data in input.
--//
--// On success, the returned error_message is empty and cursor_position counts
--// the number of bytes consumed. On failure, error_message is non-empty and
--// cursor_position is the location of the error. That error may be a content
--// error (invalid CBOR) or an input error (e.g. network failure).
--DecodeCborResult  //
--DecodeCbor(DecodeCborCallbacks& callbacks,
--           sync_io::Input& input,
--           DecodeCborArgQuirks quirks = DecodeCborArgQuirks::DefaultValue());
-+  inline uint32_t
-+  num_animation_loops() const {
-+    return wuffs_wbmp__decoder__num_animation_loops(this);
-+  }
- 
--}  // namespace wuffs_aux
-+  inline uint64_t
-+  num_decoded_frame_configs() const {
-+    return wuffs_wbmp__decoder__num_decoded_frame_configs(this);
-+  }
- 
--// ---------------- Auxiliary - Image
-+  inline uint64_t
-+  num_decoded_frames() const {
-+    return wuffs_wbmp__decoder__num_decoded_frames(this);
-+  }
- 
--namespace wuffs_aux {
-+  inline wuffs_base__status
-+  restart_frame(
-+      uint64_t a_index,
-+      uint64_t a_io_position) {
-+    return wuffs_wbmp__decoder__restart_frame(this, a_index, a_io_position);
-+  }
- 
--struct DecodeImageResult {
--  DecodeImageResult(MemOwner&& pixbuf_mem_owner0,
--                    wuffs_base__pixel_buffer pixbuf0,
--                    std::string&& error_message0);
--  DecodeImageResult(std::string&& error_message0);
-+  inline wuffs_base__empty_struct
-+  set_report_metadata(
-+      uint32_t a_fourcc,
-+      bool a_report) {
-+    return wuffs_wbmp__decoder__set_report_metadata(this, a_fourcc, a_report);
-+  }
- 
--  MemOwner pixbuf_mem_owner;
--  wuffs_base__pixel_buffer pixbuf;
--  std::string error_message;
--};
-+  inline wuffs_base__status
-+  tell_me_more(
-+      wuffs_base__io_buffer* a_dst,
-+      wuffs_base__more_information* a_minfo,
-+      wuffs_base__io_buffer* a_src) {
-+    return wuffs_wbmp__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
-+  }
- 
--// DecodeImageCallbacks are the callbacks given to DecodeImage. They are always
--// called in this order:
--//  1. SelectDecoder
--//  2. HandleMetadata
--//  3. SelectPixfmt
--//  4. AllocPixbuf
--//  5. AllocWorkbuf
--//  6. Done
--//
--// It may return early - the third callback might not be invoked if the second
--// one fails - but the final callback (Done) is always invoked.
--class DecodeImageCallbacks {
-- public:
--  // AllocPixbufResult holds a memory allocation (the result of malloc or new,
--  // a statically allocated pointer, etc), or an error message. The memory is
--  // de-allocated when mem_owner goes out of scope and is destroyed.
--  struct AllocPixbufResult {
--    AllocPixbufResult(MemOwner&& mem_owner0, wuffs_base__pixel_buffer pixbuf0);
--    AllocPixbufResult(std::string&& error_message0);
-+  inline wuffs_base__range_ii_u64
-+  workbuf_len() const {
-+    return wuffs_wbmp__decoder__workbuf_len(this);
-+  }
- 
--    MemOwner mem_owner;
--    wuffs_base__pixel_buffer pixbuf;
--    std::string error_message;
--  };
-+#endif  // __cplusplus
-+};  // struct wuffs_wbmp__decoder__struct
- 
--  // AllocWorkbufResult holds a memory allocation (the result of malloc or new,
--  // a statically allocated pointer, etc), or an error message. The memory is
--  // de-allocated when mem_owner goes out of scope and is destroyed.
--  struct AllocWorkbufResult {
--    AllocWorkbufResult(MemOwner&& mem_owner0, wuffs_base__slice_u8 workbuf0);
--    AllocWorkbufResult(std::string&& error_message0);
-+#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
- 
--    MemOwner mem_owner;
--    wuffs_base__slice_u8 workbuf;
--    std::string error_message;
--  };
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP) || defined(WUFFS_NONMONOLITHIC)
- 
--  virtual ~DecodeImageCallbacks();
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WEBP) || defined(WUFFS_NONMONOLITHIC)
- 
--  // SelectDecoder returns the image decoder for the input data's file format.
--  // Returning a nullptr means failure (DecodeImage_UnsupportedImageFormat).
--  //
--  // Common formats will have a FourCC value in the range [1 ..= 0x7FFF_FFFF],
--  // such as WUFFS_BASE__FOURCC__JPEG. A zero FourCC value means that Wuffs'
--  // standard library did not recognize the image format but if SelectDecoder
--  // was overridden, it may examine the input data's starting bytes and still
--  // provide its own image decoder, e.g. for an exotic image file format that's
--  // not in Wuffs' standard library. The prefix_etc fields have the same
--  // meaning as wuffs_base__magic_number_guess_fourcc arguments. SelectDecoder
--  // implementations should not modify prefix_data's contents.
--  //
--  // SelectDecoder might be called more than once, since some image file
--  // formats can wrap others. For example, a nominal BMP file can actually
--  // contain a JPEG or a PNG.
--  //
--  // The default SelectDecoder accepts the FOURCC codes listed below. For
--  // modular builds (i.e. when #define'ing WUFFS_CONFIG__MODULES), acceptance
--  // of the ETC file format is optional (for each value of ETC) and depends on
--  // the corresponding module to be enabled at compile time (i.e. #define'ing
--  // WUFFS_CONFIG__MODULE__ETC).
--  //  - WUFFS_BASE__FOURCC__BMP
--  //  - WUFFS_BASE__FOURCC__GIF
--  //  - WUFFS_BASE__FOURCC__JPEG
--  //  - WUFFS_BASE__FOURCC__NIE
--  //  - WUFFS_BASE__FOURCC__NPBM
--  //  - WUFFS_BASE__FOURCC__PNG
--  //  - WUFFS_BASE__FOURCC__TGA
--  //  - WUFFS_BASE__FOURCC__WBMP
--  virtual wuffs_base__image_decoder::unique_ptr  //
--  SelectDecoder(uint32_t fourcc,
--                wuffs_base__slice_u8 prefix_data,
--                bool prefix_closed);
--
--  // HandleMetadata acknowledges image metadata. minfo.flavor will be one of:
--  //  - WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_PASSTHROUGH
--  //  - WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_PARSED
--  // If it is ETC__METADATA_RAW_ETC then raw contains the metadata bytes. Those
--  // bytes should not be retained beyond the the HandleMetadata call.
--  //
--  // minfo.metadata__fourcc() will typically match one of the
--  // DecodeImageArgFlags bits. For example, if (REPORT_METADATA_CHRM |
--  // REPORT_METADATA_GAMA) was passed to DecodeImage then the metadata FourCC
--  // will be either WUFFS_BASE__FOURCC__CHRM or WUFFS_BASE__FOURCC__GAMA.
--  //
--  // It returns an error message, or an empty string on success.
--  virtual std::string  //
--  HandleMetadata(const wuffs_base__more_information& minfo,
--                 wuffs_base__slice_u8 raw);
--
--  // SelectPixfmt returns the destination pixel format for AllocPixbuf. It
--  // should return wuffs_base__make_pixel_format(etc) called with one of:
--  //  - WUFFS_BASE__PIXEL_FORMAT__BGR_565
--  //  - WUFFS_BASE__PIXEL_FORMAT__BGR
--  //  - WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL
--  //  - WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE
--  //  - WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL
--  //  - WUFFS_BASE__PIXEL_FORMAT__RGB
--  //  - WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL
--  //  - WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL
--  // or return image_config.pixcfg.pixel_format(). The latter means to use the
--  // image file's natural pixel format. For example, GIF images' natural pixel
--  // format is an indexed one.
--  //
--  // Returning otherwise means failure (DecodeImage_UnsupportedPixelFormat).
--  //
--  // The default SelectPixfmt implementation returns
--  // wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL) which
--  // is 4 bytes per pixel (8 bits per channel × 4 channels).
--  virtual wuffs_base__pixel_format  //
--  SelectPixfmt(const wuffs_base__image_config& image_config);
-+// ---------------- Status Codes
- 
--  // AllocPixbuf allocates the pixel buffer.
--  //
--  // allow_uninitialized_memory will be true if a valid background_color was
--  // passed to DecodeImage, since the pixel buffer's contents will be
--  // overwritten with that color after AllocPixbuf returns.
--  //
--  // The default AllocPixbuf implementation allocates either uninitialized or
--  // zeroed memory. Zeroed memory typically corresponds to filling with opaque
--  // black or transparent black, depending on the pixel format.
--  virtual AllocPixbufResult  //
--  AllocPixbuf(const wuffs_base__image_config& image_config,
--              bool allow_uninitialized_memory);
-+extern const char wuffs_webp__error__bad_huffman_code_over_subscribed[];
-+extern const char wuffs_webp__error__bad_huffman_code_under_subscribed[];
-+extern const char wuffs_webp__error__bad_huffman_code[];
-+extern const char wuffs_webp__error__bad_back_reference[];
-+extern const char wuffs_webp__error__bad_color_cache[];
-+extern const char wuffs_webp__error__bad_header[];
-+extern const char wuffs_webp__error__bad_transform[];
-+extern const char wuffs_webp__error__short_chunk[];
-+extern const char wuffs_webp__error__truncated_input[];
-+extern const char wuffs_webp__error__unsupported_number_of_huffman_groups[];
-+extern const char wuffs_webp__error__unsupported_transform_after_color_indexing_transform[];
-+extern const char wuffs_webp__error__unsupported_webp_file[];
- 
--  // AllocWorkbuf allocates the work buffer. The allocated buffer's length
--  // should be at least len_range.min_incl, but larger allocations (up to
--  // len_range.max_incl) may have better performance (by using more memory).
--  //
--  // The default AllocWorkbuf implementation allocates len_range.max_incl bytes
--  // of either uninitialized or zeroed memory.
--  virtual AllocWorkbufResult  //
--  AllocWorkbuf(wuffs_base__range_ii_u64 len_range,
--               bool allow_uninitialized_memory);
-+// ---------------- Public Consts
- 
--  // Done is always the last Callback method called by DecodeImage, whether or
--  // not parsing the input encountered an error. Even when successful, trailing
--  // data may remain in input and buffer.
--  //
--  // The image_decoder is the one returned by SelectDecoder (if SelectDecoder
--  // was successful), or a no-op unique_ptr otherwise. Like any unique_ptr,
--  // ownership moves to the Done implementation.
--  //
--  // Do not keep a reference to buffer or buffer.data.ptr after Done returns,
--  // as DecodeImage may then de-allocate the backing array.
--  //
--  // The default Done implementation is a no-op, other than running the
--  // image_decoder unique_ptr destructor.
--  virtual void  //
--  Done(DecodeImageResult& result,
--       sync_io::Input& input,
--       IOBuffer& buffer,
--       wuffs_base__image_decoder::unique_ptr image_decoder);
--};
-+#define WUFFS_WEBP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0u
- 
--extern const char DecodeImage_BufferIsTooShort[];
--extern const char DecodeImage_MaxInclDimensionExceeded[];
--extern const char DecodeImage_MaxInclMetadataLengthExceeded[];
--extern const char DecodeImage_OutOfMemory[];
--extern const char DecodeImage_UnexpectedEndOfFile[];
--extern const char DecodeImage_UnsupportedImageFormat[];
--extern const char DecodeImage_UnsupportedMetadata[];
--extern const char DecodeImage_UnsupportedPixelBlend[];
--extern const char DecodeImage_UnsupportedPixelConfiguration[];
--extern const char DecodeImage_UnsupportedPixelFormat[];
-+// ---------------- Struct Declarations
- 
--// The FooArgBar types add structure to Foo's optional arguments. They wrap
--// inner representations for several reasons:
--//  - It provides a home for the DefaultValue static method, for Foo callers
--//    that want to override some but not all optional arguments.
--//  - It provides the "Bar" name at Foo call sites, which can help self-
--//    document Foo calls with many arguemnts.
--//  - It provides some type safety against accidentally transposing or omitting
--//    adjacent fundamentally-numeric-typed optional arguments.
-+typedef struct wuffs_webp__decoder__struct wuffs_webp__decoder;
- 
--// DecodeImageArgQuirks wraps an optional argument to DecodeImage.
--struct DecodeImageArgQuirks {
--  explicit DecodeImageArgQuirks(wuffs_base__slice_u32 repr0);
--  explicit DecodeImageArgQuirks(uint32_t* ptr, size_t len);
-+#ifdef __cplusplus
-+extern "C" {
-+#endif
- 
--  // DefaultValue returns an empty slice.
--  static DecodeImageArgQuirks DefaultValue();
-+// ---------------- Public Initializer Prototypes
- 
--  wuffs_base__slice_u32 repr;
--};
-+// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
-+// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
-+//
-+// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
-+// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
- 
--// DecodeImageArgFlags wraps an optional argument to DecodeImage.
--struct DecodeImageArgFlags {
--  explicit DecodeImageArgFlags(uint64_t repr0);
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_webp__decoder__initialize(
-+    wuffs_webp__decoder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options);
- 
--  // DefaultValue returns 0.
--  static DecodeImageArgFlags DefaultValue();
-+size_t
-+sizeof__wuffs_webp__decoder(void);
- 
--  // TODO: support all of the REPORT_METADATA_ETC flags, not just CHRM, EXIF,
--  // GAMA, ICCP, KVP, SRGB and XMP.
-+// ---------------- Allocs
- 
--  // Background Color.
--  static constexpr uint64_t REPORT_METADATA_BGCL = 0x0001;
--  // Primary Chromaticities and White Point.
--  static constexpr uint64_t REPORT_METADATA_CHRM = 0x0002;
--  // Exchangeable Image File Format.
--  static constexpr uint64_t REPORT_METADATA_EXIF = 0x0004;
--  // Gamma Correction.
--  static constexpr uint64_t REPORT_METADATA_GAMA = 0x0008;
--  // International Color Consortium Profile.
--  static constexpr uint64_t REPORT_METADATA_ICCP = 0x0010;
--  // Key-Value Pair.
--  //
--  // For PNG files, this includes iTXt, tEXt and zTXt chunks. In the
--  // HandleMetadata callback, the raw argument contains UTF-8 strings.
--  static constexpr uint64_t REPORT_METADATA_KVP = 0x0020;
--  // Modification Time.
--  static constexpr uint64_t REPORT_METADATA_MTIM = 0x0040;
--  // Offset (2-Dimensional).
--  static constexpr uint64_t REPORT_METADATA_OFS2 = 0x0080;
--  // Physical Dimensions.
--  static constexpr uint64_t REPORT_METADATA_PHYD = 0x0100;
--  // Standard Red Green Blue (Rendering Intent).
--  static constexpr uint64_t REPORT_METADATA_SRGB = 0x0200;
--  // Extensible Metadata Platform.
--  static constexpr uint64_t REPORT_METADATA_XMP = 0x0400;
-+// These functions allocate and initialize Wuffs structs. They return NULL if
-+// memory allocation fails. If they return non-NULL, there is no need to call
-+// wuffs_foo__bar__initialize, but the caller is responsible for eventually
-+// calling free on the returned pointer. That pointer is effectively a C++
-+// std::unique_ptr<T, wuffs_unique_ptr_deleter>.
- 
--  uint64_t repr;
--};
-+wuffs_webp__decoder*
-+wuffs_webp__decoder__alloc(void);
- 
--// DecodeImageArgPixelBlend wraps an optional argument to DecodeImage.
--struct DecodeImageArgPixelBlend {
--  explicit DecodeImageArgPixelBlend(wuffs_base__pixel_blend repr0);
-+static inline wuffs_base__image_decoder*
-+wuffs_webp__decoder__alloc_as__wuffs_base__image_decoder(void) {
-+  return (wuffs_base__image_decoder*)(wuffs_webp__decoder__alloc());
-+}
- 
--  // DefaultValue returns WUFFS_BASE__PIXEL_BLEND__SRC.
--  static DecodeImageArgPixelBlend DefaultValue();
-+// ---------------- Upcasts
- 
--  wuffs_base__pixel_blend repr;
--};
-+static inline wuffs_base__image_decoder*
-+wuffs_webp__decoder__upcast_as__wuffs_base__image_decoder(
-+    wuffs_webp__decoder* p) {
-+  return (wuffs_base__image_decoder*)p;
-+}
- 
--// DecodeImageArgBackgroundColor wraps an optional argument to DecodeImage.
--struct DecodeImageArgBackgroundColor {
--  explicit DecodeImageArgBackgroundColor(
--      wuffs_base__color_u32_argb_premul repr0);
-+// ---------------- Public Function Prototypes
- 
--  // DefaultValue returns 1, an invalid wuffs_base__color_u32_argb_premul.
--  static DecodeImageArgBackgroundColor DefaultValue();
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_webp__decoder__get_quirk(
-+    const wuffs_webp__decoder* self,
-+    uint32_t a_key);
- 
--  wuffs_base__color_u32_argb_premul repr;
--};
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_webp__decoder__set_quirk(
-+    wuffs_webp__decoder* self,
-+    uint32_t a_key,
-+    uint64_t a_value);
- 
--// DecodeImageArgMaxInclDimension wraps an optional argument to DecodeImage.
--struct DecodeImageArgMaxInclDimension {
--  explicit DecodeImageArgMaxInclDimension(uint32_t repr0);
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_webp__decoder__decode_image_config(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
- 
--  // DefaultValue returns 1048575 = 0x000F_FFFF, more than 1 million pixels.
--  static DecodeImageArgMaxInclDimension DefaultValue();
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_webp__decoder__decode_frame_config(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
- 
--  uint32_t repr;
--};
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_webp__decoder__decode_frame(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts);
- 
--// DecodeImageArgMaxInclMetadataLength wraps an optional argument to
--// DecodeImage.
--struct DecodeImageArgMaxInclMetadataLength {
--  explicit DecodeImageArgMaxInclMetadataLength(uint64_t repr0);
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
-+wuffs_webp__decoder__frame_dirty_rect(
-+    const wuffs_webp__decoder* self);
- 
--  // DefaultValue returns 16777215 = 0x00FF_FFFF, one less than 16 MiB.
--  static DecodeImageArgMaxInclMetadataLength DefaultValue();
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_webp__decoder__num_animation_loops(
-+    const wuffs_webp__decoder* self);
- 
--  uint64_t repr;
--};
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_webp__decoder__num_decoded_frame_configs(
-+    const wuffs_webp__decoder* self);
- 
--// DecodeImage decodes the image data in input. A variety of image file formats
--// can be decoded, depending on what callbacks.SelectDecoder returns.
--//
--// For animated formats, only the first frame is returned, since the API is
--// simpler for synchronous I/O and having DecodeImage only return when
--// completely done, but rendering animation often involves handling other
--// events in between animation frames. To decode multiple frames of animated
--// images, or for asynchronous I/O (e.g. when decoding an image streamed over
--// the network), use Wuffs' lower level C API instead of its higher level,
--// simplified C++ API (the wuffs_aux API).
--//
--// The DecodeImageResult's fields depend on whether decoding succeeded:
--//  - On total success, the error_message is empty and pixbuf.pixcfg.is_valid()
--//    is true.
--//  - On partial success (e.g. the input file was truncated but we are still
--//    able to decode some of the pixels), error_message is non-empty but
--//    pixbuf.pixcfg.is_valid() is still true. It is up to the caller whether to
--//    accept or reject partial success.
--//  - On failure, the error_message is non_empty and pixbuf.pixcfg.is_valid()
--//    is false.
--//
--// The callbacks allocate the pixel buffer memory and work buffer memory. On
--// success, pixel buffer memory ownership is passed to the DecodeImage caller
--// as the returned pixbuf_mem_owner. Regardless of success or failure, the work
--// buffer memory is deleted.
--//
--// The pixel_blend (one of the constants listed below) determines how to
--// composite the decoded image over the pixel buffer's original pixels (as
--// returned by callbacks.AllocPixbuf):
--//  - WUFFS_BASE__PIXEL_BLEND__SRC
--//  - WUFFS_BASE__PIXEL_BLEND__SRC_OVER
--//
--// The background_color is used to fill the pixel buffer after
--// callbacks.AllocPixbuf returns, if it is valid in the
--// wuffs_base__color_u32_argb_premul__is_valid sense. The default value,
--// 0x0000_0001, is not valid since its Blue channel value (0x01) is greater
--// than its Alpha channel value (0x00). A valid background_color will typically
--// be overwritten when pixel_blend is WUFFS_BASE__PIXEL_BLEND__SRC, but might
--// still be visible on partial (not total) success or when pixel_blend is
--// WUFFS_BASE__PIXEL_BLEND__SRC_OVER and the decoded image is not fully opaque.
--//
--// Decoding fails (with DecodeImage_MaxInclDimensionExceeded) if the image's
--// width or height is greater than max_incl_dimension or if any opted-in (via
--// flags bits) metadata is longer than max_incl_metadata_length.
--DecodeImageResult  //
--DecodeImage(DecodeImageCallbacks& callbacks,
--            sync_io::Input& input,
--            DecodeImageArgQuirks quirks = DecodeImageArgQuirks::DefaultValue(),
--            DecodeImageArgFlags flags = DecodeImageArgFlags::DefaultValue(),
--            DecodeImageArgPixelBlend pixel_blend =
--                DecodeImageArgPixelBlend::DefaultValue(),
--            DecodeImageArgBackgroundColor background_color =
--                DecodeImageArgBackgroundColor::DefaultValue(),
--            DecodeImageArgMaxInclDimension max_incl_dimension =
--                DecodeImageArgMaxInclDimension::DefaultValue(),
--            DecodeImageArgMaxInclMetadataLength max_incl_metadata_length =
--                DecodeImageArgMaxInclMetadataLength::DefaultValue());
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_webp__decoder__num_decoded_frames(
-+    const wuffs_webp__decoder* self);
- 
--}  // namespace wuffs_aux
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_webp__decoder__restart_frame(
-+    wuffs_webp__decoder* self,
-+    uint64_t a_index,
-+    uint64_t a_io_position);
- 
--// ---------------- Auxiliary - JSON
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_webp__decoder__set_report_metadata(
-+    wuffs_webp__decoder* self,
-+    uint32_t a_fourcc,
-+    bool a_report);
- 
--namespace wuffs_aux {
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_webp__decoder__tell_me_more(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__more_information* a_minfo,
-+    wuffs_base__io_buffer* a_src);
- 
--struct DecodeJsonResult {
--  DecodeJsonResult(std::string&& error_message0, uint64_t cursor_position0);
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_webp__decoder__workbuf_len(
-+    const wuffs_webp__decoder* self);
- 
--  std::string error_message;
--  uint64_t cursor_position;
--};
-+#ifdef __cplusplus
-+}  // extern "C"
-+#endif
- 
--class DecodeJsonCallbacks {
-- public:
--  virtual ~DecodeJsonCallbacks();
-+// ---------------- Struct Definitions
- 
--  // AppendXxx are called for leaf nodes: literals, numbers and strings. For
--  // strings, the Callbacks implementation is responsible for tracking map keys
--  // versus other values.
-+// These structs' fields, and the sizeof them, are private implementation
-+// details that aren't guaranteed to be stable across Wuffs versions.
-+//
-+// See https://en.wikipedia.org/wiki/Opaque_pointer#C
- 
--  virtual std::string AppendNull() = 0;
--  virtual std::string AppendBool(bool val) = 0;
--  virtual std::string AppendF64(double val) = 0;
--  virtual std::string AppendI64(int64_t val) = 0;
--  virtual std::string AppendTextString(std::string&& val) = 0;
-+#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
- 
--  // Push and Pop are called for container nodes: JSON arrays (lists) and JSON
--  // objects (dictionaries).
-+struct wuffs_webp__decoder__struct {
-+  // Do not access the private_impl's or private_data's fields directly. There
-+  // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
-+  // the wuffs_foo__bar__baz functions.
-   //
--  // The flags bits combine exactly one of:
--  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_NONE
--  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_LIST
--  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_DICT
--  // and exactly one of:
--  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE
--  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST
--  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT
-+  // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
-+  // can be stack allocated when WUFFS_IMPLEMENTATION is defined.
- 
--  virtual std::string Push(uint32_t flags) = 0;
--  virtual std::string Pop(uint32_t flags) = 0;
-+  struct {
-+    uint32_t magic;
-+    uint32_t active_coroutine;
-+    wuffs_base__vtable vtable_for__wuffs_base__image_decoder;
-+    wuffs_base__vtable null_vtable;
- 
--  // Done is always the last Callback method called by DecodeJson, whether or
--  // not parsing the input as JSON encountered an error. Even when successful,
--  // trailing data may remain in input and buffer. See "Unintuitive JSON
--  // Parsing" (https://nullprogram.com/blog/2019/12/28/) which discusses JSON
--  // parsing and when it stops.
--  //
--  // Do not keep a reference to buffer or buffer.data.ptr after Done returns,
--  // as DecodeJson may then de-allocate the backing array.
--  //
--  // The default Done implementation is a no-op.
--  virtual void  //
--  Done(DecodeJsonResult& result, sync_io::Input& input, IOBuffer& buffer);
--};
-+    uint32_t f_pixfmt;
-+    uint32_t f_width;
-+    uint32_t f_height;
-+    uint8_t f_call_sequence;
-+    uint8_t f_code_length_code_lengths[19];
-+    bool f_sub_chunk_has_padding;
-+    uint64_t f_frame_config_io_position;
-+    uint32_t f_riff_chunk_length;
-+    uint32_t f_sub_chunk_length;
-+    uint32_t f_bits;
-+    uint32_t f_n_bits;
-+    bool f_seen_transform[4];
-+    uint8_t f_transform_type[4];
-+    uint8_t f_transform_tile_size_log2[4];
-+    uint32_t f_n_transforms;
-+    uint32_t f_color_cache_bits;
-+    uint32_t f_overall_color_cache_bits;
-+    uint32_t f_overall_tile_size_log2;
-+    uint32_t f_overall_n_huffman_groups;
-+    uint32_t f_ht_n_symbols;
-+    uint32_t f_ht_code_lengths_remaining;
-+    uint32_t f_color_indexing_palette_size;
-+    uint32_t f_color_indexing_width;
-+    uint32_t f_workbuf_offset_for_transform[4];
-+    uint32_t f_workbuf_offset_for_color_indexing;
-+    wuffs_base__pixel_swizzler f_swizzler;
- 
--extern const char DecodeJson_BadJsonPointer[];
--extern const char DecodeJson_NoMatch[];
-+    uint32_t p_decode_huffman_groups;
-+    uint32_t p_decode_huffman_tree;
-+    uint32_t p_decode_huffman_tree_simple;
-+    uint32_t p_decode_code_length_code_lengths;
-+    uint32_t p_build_code_lengths;
-+    uint32_t p_decode_pixels_slow;
-+    uint32_t p_decode_image_config;
-+    uint32_t p_do_decode_image_config;
-+    uint32_t p_do_decode_image_config_limited;
-+    uint32_t p_do_decode_image_config_limited_vp8l;
-+    uint32_t p_decode_frame_config;
-+    uint32_t p_do_decode_frame_config;
-+    uint32_t p_decode_frame;
-+    uint32_t p_do_decode_frame;
-+    uint32_t p_decode_transform;
-+    uint32_t p_decode_color_cache_parameters;
-+    uint32_t p_decode_hg_table;
-+    uint32_t p_decode_pixels;
-+  } private_impl;
- 
--// The FooArgBar types add structure to Foo's optional arguments. They wrap
--// inner representations for several reasons:
--//  - It provides a home for the DefaultValue static method, for Foo callers
--//    that want to override some but not all optional arguments.
--//  - It provides the "Bar" name at Foo call sites, which can help self-
--//    document Foo calls with many arguemnts.
--//  - It provides some type safety against accidentally transposing or omitting
--//    adjacent fundamentally-numeric-typed optional arguments.
-+  struct {
-+    uint8_t f_palette[1024];
-+    uint32_t f_color_cache[2048];
-+    uint16_t f_codes[2328];
-+    uint16_t f_code_lengths[2328];
-+    uint16_t f_code_lengths_huffman_nodes[37];
-+    uint16_t f_huffman_nodes[256][6267];
- 
--// DecodeJsonArgQuirks wraps an optional argument to DecodeJson.
--struct DecodeJsonArgQuirks {
--  explicit DecodeJsonArgQuirks(wuffs_base__slice_u32 repr0);
--  explicit DecodeJsonArgQuirks(uint32_t* ptr, size_t len);
-+    struct {
-+      uint32_t v_hg;
-+      uint32_t v_ht;
-+    } s_decode_huffman_groups;
-+    struct {
-+      uint32_t v_use_second_symbol;
-+      uint32_t v_first_symbol_n_bits;
-+      uint32_t v_symbol0;
-+      uint32_t v_base_offset;
-+    } s_decode_huffman_tree_simple;
-+    struct {
-+      uint32_t v_n_codes;
-+      uint32_t v_i;
-+    } s_decode_code_length_code_lengths;
-+    struct {
-+      uint32_t v_length_n_bits;
-+      uint16_t v_prev_code_length;
-+      uint32_t v_s;
-+      uint32_t v_s_max;
-+      uint16_t v_node;
-+      uint16_t v_repeat_value;
-+      uint32_t v_repeat_n_bits;
-+    } s_build_code_lengths;
-+    struct {
-+      uint64_t v_p;
-+      uint64_t v_p_max;
-+      uint32_t v_tile_size_log2;
-+      uint32_t v_width_in_tiles;
-+      uint32_t v_x;
-+      uint32_t v_y;
-+      uint32_t v_hg;
-+      uint16_t v_node;
-+      uint32_t v_color;
-+      uint32_t v_back_ref_len_n_bits;
-+      uint32_t v_back_ref_len_minus_1;
-+      uint32_t v_back_ref_dist_n_bits;
-+      uint32_t v_back_ref_dist_premap_minus_1;
-+      uint64_t v_color_cache_p;
-+    } s_decode_pixels_slow;
-+    struct {
-+      uint64_t scratch;
-+    } s_do_decode_image_config;
-+    struct {
-+      uint64_t scratch;
-+    } s_do_decode_image_config_limited;
-+    struct {
-+      uint64_t scratch;
-+    } s_do_decode_image_config_limited_vp8l;
-+    struct {
-+      uint32_t v_width;
-+    } s_do_decode_frame;
-+    struct {
-+      uint32_t v_transform_type;
-+      uint32_t v_tile_size_log2;
-+    } s_decode_transform;
-+    struct {
-+      uint32_t v_tile_size_log2;
-+    } s_decode_hg_table;
-+  } private_data;
- 
--  // DefaultValue returns an empty slice.
--  static DecodeJsonArgQuirks DefaultValue();
-+#ifdef __cplusplus
-+#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
-+  using unique_ptr = std::unique_ptr<wuffs_webp__decoder, wuffs_unique_ptr_deleter>;
- 
--  wuffs_base__slice_u32 repr;
--};
-+  // On failure, the alloc_etc functions return nullptr. They don't throw.
- 
--// DecodeJsonArgJsonPointer wraps an optional argument to DecodeJson.
--struct DecodeJsonArgJsonPointer {
--  explicit DecodeJsonArgJsonPointer(std::string repr0);
-+  static inline unique_ptr
-+  alloc() {
-+    return unique_ptr(wuffs_webp__decoder__alloc());
-+  }
- 
--  // DefaultValue returns an empty string.
--  static DecodeJsonArgJsonPointer DefaultValue();
-+  static inline wuffs_base__image_decoder::unique_ptr
-+  alloc_as__wuffs_base__image_decoder() {
-+    return wuffs_base__image_decoder::unique_ptr(
-+        wuffs_webp__decoder__alloc_as__wuffs_base__image_decoder());
-+  }
-+#endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
- 
--  std::string repr;
--};
-+#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
-+  // Disallow constructing or copying an object via standard C++ mechanisms,
-+  // e.g. the "new" operator, as this struct is intentionally opaque. Its total
-+  // size and field layout is not part of the public, stable, memory-safe API.
-+  // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
-+  // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
-+  // their first argument) rather than tweaking bar.private_impl.qux fields.
-+  //
-+  // In C, we can just leave wuffs_foo__bar as an incomplete type (unless
-+  // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
-+  // order to provide convenience methods. These forward on "this", so that you
-+  // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
-+  wuffs_webp__decoder__struct() = delete;
-+  wuffs_webp__decoder__struct(const wuffs_webp__decoder__struct&) = delete;
-+  wuffs_webp__decoder__struct& operator=(
-+      const wuffs_webp__decoder__struct&) = delete;
-+#endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
- 
--// DecodeJson calls callbacks based on the JSON-formatted data in input.
--//
--// On success, the returned error_message is empty and cursor_position counts
--// the number of bytes consumed. On failure, error_message is non-empty and
--// cursor_position is the location of the error. That error may be a content
--// error (invalid JSON) or an input error (e.g. network failure).
--//
--// json_pointer is a query in the JSON Pointer (RFC 6901) syntax. The callbacks
--// run for the input's sub-node that matches the query. DecodeJson_NoMatch is
--// returned if no matching sub-node was found. The empty query matches the
--// input's root node, consistent with JSON Pointer semantics.
--//
--// The JSON Pointer implementation is greedy: duplicate keys are not rejected
--// but only the first match for each '/'-separated fragment is followed.
--DecodeJsonResult  //
--DecodeJson(DecodeJsonCallbacks& callbacks,
--           sync_io::Input& input,
--           DecodeJsonArgQuirks quirks = DecodeJsonArgQuirks::DefaultValue(),
--           DecodeJsonArgJsonPointer json_pointer =
--               DecodeJsonArgJsonPointer::DefaultValue());
-+#if !defined(WUFFS_IMPLEMENTATION)
-+  // As above, the size of the struct is not part of the public API, and unless
-+  // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
-+  // allocated, not stack allocated. Its size is not intended to be known at
-+  // compile time, but it is unfortunately divulged as a side effect of
-+  // defining C++ convenience methods. Use "sizeof__T()", calling the function,
-+  // instead of "sizeof T", invoking the operator. To make the two values
-+  // different, so that passing the latter will be rejected by the initialize
-+  // function, we add an arbitrary amount of dead weight.
-+  uint8_t dead_weight[123000000];  // 123 MB.
-+#endif  // !defined(WUFFS_IMPLEMENTATION)
- 
--}  // namespace wuffs_aux
-+  inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+  initialize(
-+      size_t sizeof_star_self,
-+      uint64_t wuffs_version,
-+      uint32_t options) {
-+    return wuffs_webp__decoder__initialize(
-+        this, sizeof_star_self, wuffs_version, options);
-+  }
- 
--#endif  // defined(__cplusplus) && defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
-+  inline wuffs_base__image_decoder*
-+  upcast_as__wuffs_base__image_decoder() {
-+    return (wuffs_base__image_decoder*)this;
-+  }
- 
--// ‼ WUFFS C HEADER ENDS HERE.
--#ifdef WUFFS_IMPLEMENTATION
-+  inline uint64_t
-+  get_quirk(
-+      uint32_t a_key) const {
-+    return wuffs_webp__decoder__get_quirk(this, a_key);
-+  }
- 
--#ifdef __cplusplus
--extern "C" {
--#endif
-+  inline wuffs_base__status
-+  set_quirk(
-+      uint32_t a_key,
-+      uint64_t a_value) {
-+    return wuffs_webp__decoder__set_quirk(this, a_key, a_value);
-+  }
- 
--// ---------------- Fundamentals
-+  inline wuffs_base__status
-+  decode_image_config(
-+      wuffs_base__image_config* a_dst,
-+      wuffs_base__io_buffer* a_src) {
-+    return wuffs_webp__decoder__decode_image_config(this, a_dst, a_src);
-+  }
- 
--// WUFFS_BASE__MAGIC is a magic number to check that initializers are called.
--// It's not foolproof, given C doesn't automatically zero memory before use,
--// but it should catch 99.99% of cases.
--//
--// Its (non-zero) value is arbitrary, based on md5sum("wuffs").
--#define WUFFS_BASE__MAGIC ((uint32_t)0x3CCB6C71)
-+  inline wuffs_base__status
-+  decode_frame_config(
-+      wuffs_base__frame_config* a_dst,
-+      wuffs_base__io_buffer* a_src) {
-+    return wuffs_webp__decoder__decode_frame_config(this, a_dst, a_src);
-+  }
- 
--// WUFFS_BASE__DISABLED is a magic number to indicate that a non-recoverable
--// error was previously encountered.
--//
--// Its (non-zero) value is arbitrary, based on md5sum("disabled").
--#define WUFFS_BASE__DISABLED ((uint32_t)0x075AE3D2)
-+  inline wuffs_base__status
-+  decode_frame(
-+      wuffs_base__pixel_buffer* a_dst,
-+      wuffs_base__io_buffer* a_src,
-+      wuffs_base__pixel_blend a_blend,
-+      wuffs_base__slice_u8 a_workbuf,
-+      wuffs_base__decode_frame_options* a_opts) {
-+    return wuffs_webp__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
-+  }
- 
--// Use switch cases for coroutine suspension points, similar to the technique
--// in https://www.chiark.greenend.org.uk/~sgtatham/coroutines.html
--//
--// The implicit fallthrough is intentional.
--//
--// We use trivial macros instead of an explicit assignment and case statement
--// so that clang-format doesn't get confused by the unusual "case"s.
--#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0 case 0:;
--#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT(n) \
--  coro_susp_point = n;                            \
--  case n:;
-+  inline wuffs_base__rect_ie_u32
-+  frame_dirty_rect() const {
-+    return wuffs_webp__decoder__frame_dirty_rect(this);
-+  }
- 
--#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(n) \
--  if (!status.repr) {                                           \
--    goto ok;                                                    \
--  } else if (*status.repr != '$') {                             \
--    goto exit;                                                  \
--  }                                                             \
--  coro_susp_point = n;                                          \
--  goto suspend;                                                 \
--  case n:;
-+  inline uint32_t
-+  num_animation_loops() const {
-+    return wuffs_webp__decoder__num_animation_loops(this);
-+  }
- 
--// The "defined(__clang__)" isn't redundant. While vanilla clang defines
--// __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not.
--#if defined(__GNUC__) || defined(__clang__)
--#define WUFFS_BASE__LIKELY(expr) (__builtin_expect(!!(expr), 1))
--#define WUFFS_BASE__UNLIKELY(expr) (__builtin_expect(!!(expr), 0))
--#else
--#define WUFFS_BASE__LIKELY(expr) (expr)
--#define WUFFS_BASE__UNLIKELY(expr) (expr)
--#endif
-+  inline uint64_t
-+  num_decoded_frame_configs() const {
-+    return wuffs_webp__decoder__num_decoded_frame_configs(this);
-+  }
- 
--// --------
-+  inline uint64_t
-+  num_decoded_frames() const {
-+    return wuffs_webp__decoder__num_decoded_frames(this);
-+  }
- 
--#if defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wcast-qual"
--#endif
--static inline uint8_t*  //
--wuffs_base__strip_const_from_u8_ptr(const uint8_t* ptr) {
--  return (uint8_t*)ptr;
--}
--#if defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
-+  inline wuffs_base__status
-+  restart_frame(
-+      uint64_t a_index,
-+      uint64_t a_io_position) {
-+    return wuffs_webp__decoder__restart_frame(this, a_index, a_io_position);
-+  }
- 
--// --------
-+  inline wuffs_base__empty_struct
-+  set_report_metadata(
-+      uint32_t a_fourcc,
-+      bool a_report) {
-+    return wuffs_webp__decoder__set_report_metadata(this, a_fourcc, a_report);
-+  }
- 
--static inline wuffs_base__empty_struct  //
--wuffs_base__ignore_status(wuffs_base__status z) {
--  return wuffs_base__make_empty_struct();
--}
-+  inline wuffs_base__status
-+  tell_me_more(
-+      wuffs_base__io_buffer* a_dst,
-+      wuffs_base__more_information* a_minfo,
-+      wuffs_base__io_buffer* a_src) {
-+    return wuffs_webp__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
-+  }
- 
--static inline wuffs_base__status  //
--wuffs_base__status__ensure_not_a_suspension(wuffs_base__status z) {
--  if (z.repr && (*z.repr == '$')) {
--    z.repr = wuffs_base__error__cannot_return_a_suspension;
-+  inline wuffs_base__range_ii_u64
-+  workbuf_len() const {
-+    return wuffs_webp__decoder__workbuf_len(this);
-   }
--  return z;
--}
- 
--// --------
-+#endif  // __cplusplus
-+};  // struct wuffs_webp__decoder__struct
- 
--// wuffs_base__iterate_total_advance returns the exclusive pointer-offset at
--// which iteration should stop. The overall slice has length total_len, each
--// iteration's sub-slice has length iter_len and are placed iter_advance apart.
--//
--// The iter_advance may not be larger than iter_len. The iter_advance may be
--// smaller than iter_len, in which case the sub-slices will overlap.
--//
--// The return value r satisfies ((0 <= r) && (r <= total_len)).
--//
--// For example, if total_len = 15, iter_len = 5 and iter_advance = 3, there are
--// four iterations at offsets 0, 3, 6 and 9. This function returns 12.
--//
--// 0123456789012345
--// [....]
--//    [....]
--//       [....]
--//          [....]
--//             $
--// 0123456789012345
--//
--// For example, if total_len = 15, iter_len = 5 and iter_advance = 5, there are
--// three iterations at offsets 0, 5 and 10. This function returns 15.
-+#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
-+
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WEBP) || defined(WUFFS_NONMONOLITHIC)
-+
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH32) || defined(WUFFS_NONMONOLITHIC)
-+
-+// ---------------- Status Codes
-+
-+// ---------------- Public Consts
-+
-+// ---------------- Struct Declarations
-+
-+typedef struct wuffs_xxhash32__hasher__struct wuffs_xxhash32__hasher;
-+
-+#ifdef __cplusplus
-+extern "C" {
-+#endif
-+
-+// ---------------- Public Initializer Prototypes
-+
-+// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
-+// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
- //
--// 0123456789012345
--// [....]
--//      [....]
--//           [....]
--//                $
--// 0123456789012345
--static inline size_t  //
--wuffs_base__iterate_total_advance(size_t total_len,
--                                  size_t iter_len,
--                                  size_t iter_advance) {
--  if (total_len >= iter_len) {
--    size_t n = total_len - iter_len;
--    return ((n / iter_advance) * iter_advance) + iter_advance;
--  }
--  return 0;
--}
-+// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
-+// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
- 
--// ---------------- Numeric Types
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_xxhash32__hasher__initialize(
-+    wuffs_xxhash32__hasher* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options);
- 
--extern const uint8_t wuffs_base__low_bits_mask__u8[8];
--extern const uint16_t wuffs_base__low_bits_mask__u16[16];
--extern const uint32_t wuffs_base__low_bits_mask__u32[32];
--extern const uint64_t wuffs_base__low_bits_mask__u64[64];
-+size_t
-+sizeof__wuffs_xxhash32__hasher(void);
- 
--#define WUFFS_BASE__LOW_BITS_MASK__U8(n) (wuffs_base__low_bits_mask__u8[n])
--#define WUFFS_BASE__LOW_BITS_MASK__U16(n) (wuffs_base__low_bits_mask__u16[n])
--#define WUFFS_BASE__LOW_BITS_MASK__U32(n) (wuffs_base__low_bits_mask__u32[n])
--#define WUFFS_BASE__LOW_BITS_MASK__U64(n) (wuffs_base__low_bits_mask__u64[n])
-+// ---------------- Allocs
- 
--// --------
-+// These functions allocate and initialize Wuffs structs. They return NULL if
-+// memory allocation fails. If they return non-NULL, there is no need to call
-+// wuffs_foo__bar__initialize, but the caller is responsible for eventually
-+// calling free on the returned pointer. That pointer is effectively a C++
-+// std::unique_ptr<T, wuffs_unique_ptr_deleter>.
- 
--static inline void  //
--wuffs_base__u8__sat_add_indirect(uint8_t* x, uint8_t y) {
--  *x = wuffs_base__u8__sat_add(*x, y);
--}
-+wuffs_xxhash32__hasher*
-+wuffs_xxhash32__hasher__alloc(void);
- 
--static inline void  //
--wuffs_base__u8__sat_sub_indirect(uint8_t* x, uint8_t y) {
--  *x = wuffs_base__u8__sat_sub(*x, y);
-+static inline wuffs_base__hasher_u32*
-+wuffs_xxhash32__hasher__alloc_as__wuffs_base__hasher_u32(void) {
-+  return (wuffs_base__hasher_u32*)(wuffs_xxhash32__hasher__alloc());
- }
- 
--static inline void  //
--wuffs_base__u16__sat_add_indirect(uint16_t* x, uint16_t y) {
--  *x = wuffs_base__u16__sat_add(*x, y);
--}
-+// ---------------- Upcasts
- 
--static inline void  //
--wuffs_base__u16__sat_sub_indirect(uint16_t* x, uint16_t y) {
--  *x = wuffs_base__u16__sat_sub(*x, y);
-+static inline wuffs_base__hasher_u32*
-+wuffs_xxhash32__hasher__upcast_as__wuffs_base__hasher_u32(
-+    wuffs_xxhash32__hasher* p) {
-+  return (wuffs_base__hasher_u32*)p;
- }
- 
--static inline void  //
--wuffs_base__u32__sat_add_indirect(uint32_t* x, uint32_t y) {
--  *x = wuffs_base__u32__sat_add(*x, y);
--}
-+// ---------------- Public Function Prototypes
- 
--static inline void  //
--wuffs_base__u32__sat_sub_indirect(uint32_t* x, uint32_t y) {
--  *x = wuffs_base__u32__sat_sub(*x, y);
--}
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_xxhash32__hasher__get_quirk(
-+    const wuffs_xxhash32__hasher* self,
-+    uint32_t a_key);
- 
--static inline void  //
--wuffs_base__u64__sat_add_indirect(uint64_t* x, uint64_t y) {
--  *x = wuffs_base__u64__sat_add(*x, y);
--}
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_xxhash32__hasher__set_quirk(
-+    wuffs_xxhash32__hasher* self,
-+    uint32_t a_key,
-+    uint64_t a_value);
- 
--static inline void  //
--wuffs_base__u64__sat_sub_indirect(uint64_t* x, uint64_t y) {
--  *x = wuffs_base__u64__sat_sub(*x, y);
--}
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_xxhash32__hasher__update(
-+    wuffs_xxhash32__hasher* self,
-+    wuffs_base__slice_u8 a_x);
- 
--// ---------------- Numeric Types (Utility)
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_xxhash32__hasher__update_u32(
-+    wuffs_xxhash32__hasher* self,
-+    wuffs_base__slice_u8 a_x);
- 
--#define wuffs_base__utility__sign_extend_convert_u16_u32(a) \
--  ((uint32_t)(int32_t)(int16_t)(a))
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_xxhash32__hasher__checksum_u32(
-+    const wuffs_xxhash32__hasher* self);
- 
--#define wuffs_base__utility__sign_extend_rshift_u32(a, n) \
--  ((uint32_t)(((int32_t)(a)) >> (n)))
-+#ifdef __cplusplus
-+}  // extern "C"
-+#endif
- 
--#define wuffs_base__utility__sign_extend_rshift_u64(a, n) \
--  ((uint64_t)(((int64_t)(a)) >> (n)))
-+// ---------------- Struct Definitions
- 
--// ---------------- Slices and Tables
-+// These structs' fields, and the sizeof them, are private implementation
-+// details that aren't guaranteed to be stable across Wuffs versions.
-+//
-+// See https://en.wikipedia.org/wiki/Opaque_pointer#C
- 
--// wuffs_base__slice_u8__prefix returns up to the first up_to bytes of s.
--static inline wuffs_base__slice_u8  //
--wuffs_base__slice_u8__prefix(wuffs_base__slice_u8 s, uint64_t up_to) {
--  if (((uint64_t)(s.len)) > up_to) {
--    s.len = ((size_t)up_to);
-+#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
-+
-+struct wuffs_xxhash32__hasher__struct {
-+  // Do not access the private_impl's or private_data's fields directly. There
-+  // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
-+  // the wuffs_foo__bar__baz functions.
-+  //
-+  // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
-+  // can be stack allocated when WUFFS_IMPLEMENTATION is defined.
-+
-+  struct {
-+    uint32_t magic;
-+    uint32_t active_coroutine;
-+    wuffs_base__vtable vtable_for__wuffs_base__hasher_u32;
-+    wuffs_base__vtable null_vtable;
-+
-+    uint32_t f_length_modulo_u32;
-+    bool f_length_overflows_u32;
-+    uint8_t f_padding0;
-+    uint8_t f_padding1;
-+    uint8_t f_buf_len;
-+    uint8_t f_buf_data[16];
-+    uint32_t f_v0;
-+    uint32_t f_v1;
-+    uint32_t f_v2;
-+    uint32_t f_v3;
-+  } private_impl;
-+
-+#ifdef __cplusplus
-+#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
-+  using unique_ptr = std::unique_ptr<wuffs_xxhash32__hasher, wuffs_unique_ptr_deleter>;
-+
-+  // On failure, the alloc_etc functions return nullptr. They don't throw.
-+
-+  static inline unique_ptr
-+  alloc() {
-+    return unique_ptr(wuffs_xxhash32__hasher__alloc());
-   }
--  return s;
--}
- 
--// wuffs_base__slice_u8__suffix returns up to the last up_to bytes of s.
--static inline wuffs_base__slice_u8  //
--wuffs_base__slice_u8__suffix(wuffs_base__slice_u8 s, uint64_t up_to) {
--  if (((uint64_t)(s.len)) > up_to) {
--    s.ptr += ((uint64_t)(s.len)) - up_to;
--    s.len = ((size_t)up_to);
-+  static inline wuffs_base__hasher_u32::unique_ptr
-+  alloc_as__wuffs_base__hasher_u32() {
-+    return wuffs_base__hasher_u32::unique_ptr(
-+        wuffs_xxhash32__hasher__alloc_as__wuffs_base__hasher_u32());
-   }
--  return s;
--}
-+#endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
- 
--// wuffs_base__slice_u8__copy_from_slice calls memmove(dst.ptr, src.ptr, len)
--// where len is the minimum of dst.len and src.len.
--//
--// Passing a wuffs_base__slice_u8 with all fields NULL or zero (a valid, empty
--// slice) is valid and results in a no-op.
--static inline uint64_t  //
--wuffs_base__slice_u8__copy_from_slice(wuffs_base__slice_u8 dst,
--                                      wuffs_base__slice_u8 src) {
--  size_t len = dst.len < src.len ? dst.len : src.len;
--  if (len > 0) {
--    memmove(dst.ptr, src.ptr, len);
-+#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
-+  // Disallow constructing or copying an object via standard C++ mechanisms,
-+  // e.g. the "new" operator, as this struct is intentionally opaque. Its total
-+  // size and field layout is not part of the public, stable, memory-safe API.
-+  // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
-+  // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
-+  // their first argument) rather than tweaking bar.private_impl.qux fields.
-+  //
-+  // In C, we can just leave wuffs_foo__bar as an incomplete type (unless
-+  // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
-+  // order to provide convenience methods. These forward on "this", so that you
-+  // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
-+  wuffs_xxhash32__hasher__struct() = delete;
-+  wuffs_xxhash32__hasher__struct(const wuffs_xxhash32__hasher__struct&) = delete;
-+  wuffs_xxhash32__hasher__struct& operator=(
-+      const wuffs_xxhash32__hasher__struct&) = delete;
-+#endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
-+
-+#if !defined(WUFFS_IMPLEMENTATION)
-+  // As above, the size of the struct is not part of the public API, and unless
-+  // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
-+  // allocated, not stack allocated. Its size is not intended to be known at
-+  // compile time, but it is unfortunately divulged as a side effect of
-+  // defining C++ convenience methods. Use "sizeof__T()", calling the function,
-+  // instead of "sizeof T", invoking the operator. To make the two values
-+  // different, so that passing the latter will be rejected by the initialize
-+  // function, we add an arbitrary amount of dead weight.
-+  uint8_t dead_weight[123000000];  // 123 MB.
-+#endif  // !defined(WUFFS_IMPLEMENTATION)
-+
-+  inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+  initialize(
-+      size_t sizeof_star_self,
-+      uint64_t wuffs_version,
-+      uint32_t options) {
-+    return wuffs_xxhash32__hasher__initialize(
-+        this, sizeof_star_self, wuffs_version, options);
-   }
--  return len;
--}
- 
--static inline wuffs_base__empty_struct  //
--wuffs_base__bulk_load_host_endian(void* ptr,
--                                  size_t len,
--                                  wuffs_base__slice_u8 src) {
--  if (len && (len <= src.len)) {
--    memmove(ptr, src.ptr, len);
-+  inline wuffs_base__hasher_u32*
-+  upcast_as__wuffs_base__hasher_u32() {
-+    return (wuffs_base__hasher_u32*)this;
-   }
--  return wuffs_base__make_empty_struct();
--}
- 
--static inline wuffs_base__empty_struct  //
--wuffs_base__bulk_memset(void* ptr, size_t len, uint8_t byte_value) {
--  if (len) {
--    memset(ptr, byte_value, len);
-+  inline uint64_t
-+  get_quirk(
-+      uint32_t a_key) const {
-+    return wuffs_xxhash32__hasher__get_quirk(this, a_key);
-   }
--  return wuffs_base__make_empty_struct();
--}
- 
--static inline wuffs_base__empty_struct  //
--wuffs_base__bulk_save_host_endian(void* ptr,
--                                  size_t len,
--                                  wuffs_base__slice_u8 dst) {
--  if (len && (len <= dst.len)) {
--    memmove(dst.ptr, ptr, len);
-+  inline wuffs_base__status
-+  set_quirk(
-+      uint32_t a_key,
-+      uint64_t a_value) {
-+    return wuffs_xxhash32__hasher__set_quirk(this, a_key, a_value);
-   }
--  return wuffs_base__make_empty_struct();
--}
- 
--// --------
-+  inline wuffs_base__empty_struct
-+  update(
-+      wuffs_base__slice_u8 a_x) {
-+    return wuffs_xxhash32__hasher__update(this, a_x);
-+  }
- 
--static inline wuffs_base__slice_u8  //
--wuffs_base__table_u8__row_u32(wuffs_base__table_u8 t, uint32_t y) {
--  if (y < t.height) {
--    return wuffs_base__make_slice_u8(t.ptr + (t.stride * y), t.width);
-+  inline uint32_t
-+  update_u32(
-+      wuffs_base__slice_u8 a_x) {
-+    return wuffs_xxhash32__hasher__update_u32(this, a_x);
-   }
--  return wuffs_base__make_slice_u8(NULL, 0);
--}
- 
--// ---------------- Slices and Tables (Utility)
-+  inline uint32_t
-+  checksum_u32() const {
-+    return wuffs_xxhash32__hasher__checksum_u32(this);
-+  }
- 
--#define wuffs_base__utility__empty_slice_u8 wuffs_base__empty_slice_u8
-+#endif  // __cplusplus
-+};  // struct wuffs_xxhash32__hasher__struct
- 
--// ---------------- Ranges and Rects
-+#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
- 
--static inline uint32_t  //
--wuffs_base__range_ii_u32__get_min_incl(const wuffs_base__range_ii_u32* r) {
--  return r->min_incl;
--}
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH32) || defined(WUFFS_NONMONOLITHIC)
- 
--static inline uint32_t  //
--wuffs_base__range_ii_u32__get_max_incl(const wuffs_base__range_ii_u32* r) {
--  return r->max_incl;
--}
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH64) || defined(WUFFS_NONMONOLITHIC)
- 
--static inline uint32_t  //
--wuffs_base__range_ie_u32__get_min_incl(const wuffs_base__range_ie_u32* r) {
--  return r->min_incl;
--}
-+// ---------------- Status Codes
- 
--static inline uint32_t  //
--wuffs_base__range_ie_u32__get_max_excl(const wuffs_base__range_ie_u32* r) {
--  return r->max_excl;
--}
-+// ---------------- Public Consts
- 
--static inline uint64_t  //
--wuffs_base__range_ii_u64__get_min_incl(const wuffs_base__range_ii_u64* r) {
--  return r->min_incl;
--}
-+// ---------------- Struct Declarations
- 
--static inline uint64_t  //
--wuffs_base__range_ii_u64__get_max_incl(const wuffs_base__range_ii_u64* r) {
--  return r->max_incl;
--}
-+typedef struct wuffs_xxhash64__hasher__struct wuffs_xxhash64__hasher;
- 
--static inline uint64_t  //
--wuffs_base__range_ie_u64__get_min_incl(const wuffs_base__range_ie_u64* r) {
--  return r->min_incl;
--}
-+#ifdef __cplusplus
-+extern "C" {
-+#endif
- 
--static inline uint64_t  //
--wuffs_base__range_ie_u64__get_max_excl(const wuffs_base__range_ie_u64* r) {
--  return r->max_excl;
--}
-+// ---------------- Public Initializer Prototypes
- 
--// ---------------- Ranges and Rects (Utility)
-+// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
-+// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
-+//
-+// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
-+// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
- 
--#define wuffs_base__utility__empty_range_ii_u32 wuffs_base__empty_range_ii_u32
--#define wuffs_base__utility__empty_range_ie_u32 wuffs_base__empty_range_ie_u32
--#define wuffs_base__utility__empty_range_ii_u64 wuffs_base__empty_range_ii_u64
--#define wuffs_base__utility__empty_range_ie_u64 wuffs_base__empty_range_ie_u64
--#define wuffs_base__utility__empty_rect_ii_u32 wuffs_base__empty_rect_ii_u32
--#define wuffs_base__utility__empty_rect_ie_u32 wuffs_base__empty_rect_ie_u32
--#define wuffs_base__utility__make_range_ii_u32 wuffs_base__make_range_ii_u32
--#define wuffs_base__utility__make_range_ie_u32 wuffs_base__make_range_ie_u32
--#define wuffs_base__utility__make_range_ii_u64 wuffs_base__make_range_ii_u64
--#define wuffs_base__utility__make_range_ie_u64 wuffs_base__make_range_ie_u64
--#define wuffs_base__utility__make_rect_ii_u32 wuffs_base__make_rect_ii_u32
--#define wuffs_base__utility__make_rect_ie_u32 wuffs_base__make_rect_ie_u32
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_xxhash64__hasher__initialize(
-+    wuffs_xxhash64__hasher* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options);
- 
--// ---------------- I/O
-+size_t
-+sizeof__wuffs_xxhash64__hasher(void);
- 
--static inline uint64_t  //
--wuffs_base__io__count_since(uint64_t mark, uint64_t index) {
--  if (index >= mark) {
--    return index - mark;
--  }
--  return 0;
--}
-+// ---------------- Allocs
- 
--// TODO: drop the "const" in "const uint8_t* ptr". Some though required about
--// the base.io_reader.since method returning a mutable "slice base.u8".
--#if defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wcast-qual"
--#endif
--static inline wuffs_base__slice_u8  //
--wuffs_base__io__since(uint64_t mark, uint64_t index, const uint8_t* ptr) {
--  if (index >= mark) {
--    return wuffs_base__make_slice_u8(((uint8_t*)ptr) + mark,
--                                     ((size_t)(index - mark)));
--  }
--  return wuffs_base__make_slice_u8(NULL, 0);
--}
--#if defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
-+// These functions allocate and initialize Wuffs structs. They return NULL if
-+// memory allocation fails. If they return non-NULL, there is no need to call
-+// wuffs_foo__bar__initialize, but the caller is responsible for eventually
-+// calling free on the returned pointer. That pointer is effectively a C++
-+// std::unique_ptr<T, wuffs_unique_ptr_deleter>.
- 
--// --------
-+wuffs_xxhash64__hasher*
-+wuffs_xxhash64__hasher__alloc(void);
- 
--static inline void  //
--wuffs_base__io_reader__limit(const uint8_t** ptr_io2_r,
--                             const uint8_t* iop_r,
--                             uint64_t limit) {
--  if (((uint64_t)(*ptr_io2_r - iop_r)) > limit) {
--    *ptr_io2_r = iop_r + limit;
--  }
-+static inline wuffs_base__hasher_u64*
-+wuffs_xxhash64__hasher__alloc_as__wuffs_base__hasher_u64(void) {
-+  return (wuffs_base__hasher_u64*)(wuffs_xxhash64__hasher__alloc());
- }
- 
--static inline uint32_t  //
--wuffs_base__io_reader__limited_copy_u32_to_slice(const uint8_t** ptr_iop_r,
--                                                 const uint8_t* io2_r,
--                                                 uint32_t length,
--                                                 wuffs_base__slice_u8 dst) {
--  const uint8_t* iop_r = *ptr_iop_r;
--  size_t n = dst.len;
--  if (n > length) {
--    n = length;
--  }
--  if (n > ((size_t)(io2_r - iop_r))) {
--    n = (size_t)(io2_r - iop_r);
--  }
--  if (n > 0) {
--    memmove(dst.ptr, iop_r, n);
--    *ptr_iop_r += n;
--  }
--  return (uint32_t)(n);
-+// ---------------- Upcasts
-+
-+static inline wuffs_base__hasher_u64*
-+wuffs_xxhash64__hasher__upcast_as__wuffs_base__hasher_u64(
-+    wuffs_xxhash64__hasher* p) {
-+  return (wuffs_base__hasher_u64*)p;
- }
- 
--// wuffs_base__io_reader__match7 returns whether the io_reader's upcoming bytes
--// start with the given prefix (up to 7 bytes long). It is peek-like, not
--// read-like, in that there are no side-effects.
--//
--// The low 3 bits of a hold the prefix length, n.
--//
--// The high 56 bits of a hold the prefix itself, in little-endian order. The
--// first prefix byte is in bits 8..=15, the second prefix byte is in bits
--// 16..=23, etc. The high (8 * (7 - n)) bits are ignored.
--//
--// There are three possible return values:
--//  - 0 means success.
--//  - 1 means inconclusive, equivalent to "$short read".
--//  - 2 means failure.
--static inline uint32_t  //
--wuffs_base__io_reader__match7(const uint8_t* iop_r,
--                              const uint8_t* io2_r,
--                              wuffs_base__io_buffer* r,
--                              uint64_t a) {
--  uint32_t n = a & 7;
--  a >>= 8;
--  if ((io2_r - iop_r) >= 8) {
--    uint64_t x = wuffs_base__peek_u64le__no_bounds_check(iop_r);
--    uint32_t shift = 8 * (8 - n);
--    return ((a << shift) == (x << shift)) ? 0 : 2;
--  }
--  for (; n > 0; n--) {
--    if (iop_r >= io2_r) {
--      return (r && r->meta.closed) ? 2 : 1;
--    } else if (*iop_r != ((uint8_t)(a))) {
--      return 2;
--    }
--    iop_r++;
--    a >>= 8;
--  }
--  return 0;
--}
-+// ---------------- Public Function Prototypes
- 
--static inline wuffs_base__io_buffer*  //
--wuffs_base__io_reader__set(wuffs_base__io_buffer* b,
--                           const uint8_t** ptr_iop_r,
--                           const uint8_t** ptr_io0_r,
--                           const uint8_t** ptr_io1_r,
--                           const uint8_t** ptr_io2_r,
--                           wuffs_base__slice_u8 data,
--                           uint64_t history_position) {
--  b->data = data;
--  b->meta.wi = data.len;
--  b->meta.ri = 0;
--  b->meta.pos = history_position;
--  b->meta.closed = false;
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_xxhash64__hasher__get_quirk(
-+    const wuffs_xxhash64__hasher* self,
-+    uint32_t a_key);
- 
--  *ptr_iop_r = data.ptr;
--  *ptr_io0_r = data.ptr;
--  *ptr_io1_r = data.ptr;
--  *ptr_io2_r = data.ptr + data.len;
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_xxhash64__hasher__set_quirk(
-+    wuffs_xxhash64__hasher* self,
-+    uint32_t a_key,
-+    uint64_t a_value);
- 
--  return b;
--}
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_xxhash64__hasher__update(
-+    wuffs_xxhash64__hasher* self,
-+    wuffs_base__slice_u8 a_x);
- 
--// --------
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_xxhash64__hasher__update_u64(
-+    wuffs_xxhash64__hasher* self,
-+    wuffs_base__slice_u8 a_x);
- 
--static inline uint64_t  //
--wuffs_base__io_writer__copy_from_slice(uint8_t** ptr_iop_w,
--                                       uint8_t* io2_w,
--                                       wuffs_base__slice_u8 src) {
--  uint8_t* iop_w = *ptr_iop_w;
--  size_t n = src.len;
--  if (n > ((size_t)(io2_w - iop_w))) {
--    n = (size_t)(io2_w - iop_w);
--  }
--  if (n > 0) {
--    memmove(iop_w, src.ptr, n);
--    *ptr_iop_w += n;
--  }
--  return (uint64_t)(n);
--}
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_xxhash64__hasher__checksum_u64(
-+    const wuffs_xxhash64__hasher* self);
- 
--static inline void  //
--wuffs_base__io_writer__limit(uint8_t** ptr_io2_w,
--                             uint8_t* iop_w,
--                             uint64_t limit) {
--  if (((uint64_t)(*ptr_io2_w - iop_w)) > limit) {
--    *ptr_io2_w = iop_w + limit;
--  }
--}
-+#ifdef __cplusplus
-+}  // extern "C"
-+#endif
- 
--static inline uint32_t  //
--wuffs_base__io_writer__limited_copy_u32_from_history(uint8_t** ptr_iop_w,
--                                                     uint8_t* io0_w,
--                                                     uint8_t* io2_w,
--                                                     uint32_t length,
--                                                     uint32_t distance) {
--  if (!distance) {
--    return 0;
--  }
--  uint8_t* p = *ptr_iop_w;
--  if ((size_t)(p - io0_w) < (size_t)(distance)) {
--    return 0;
--  }
--  uint8_t* q = p - distance;
--  size_t n = (size_t)(io2_w - p);
--  if ((size_t)(length) > n) {
--    length = (uint32_t)(n);
--  } else {
--    n = (size_t)(length);
--  }
--  // TODO: unrolling by 3 seems best for the std/deflate benchmarks, but that
--  // is mostly because 3 is the minimum length for the deflate format. This
--  // function implementation shouldn't overfit to that one format. Perhaps the
--  // limited_copy_u32_from_history Wuffs method should also take an unroll hint
--  // argument, and the cgen can look if that argument is the constant
--  // expression '3'.
--  //
--  // See also wuffs_base__io_writer__limited_copy_u32_from_history_fast below.
--  for (; n >= 3; n -= 3) {
--    *p++ = *q++;
--    *p++ = *q++;
--    *p++ = *q++;
--  }
--  for (; n; n--) {
--    *p++ = *q++;
--  }
--  *ptr_iop_w = p;
--  return length;
--}
-+// ---------------- Struct Definitions
- 
--// wuffs_base__io_writer__limited_copy_u32_from_history_fast is like the
--// wuffs_base__io_writer__limited_copy_u32_from_history function above, but has
--// stronger pre-conditions.
-+// These structs' fields, and the sizeof them, are private implementation
-+// details that aren't guaranteed to be stable across Wuffs versions.
- //
--// The caller needs to prove that:
--//  - length   <= (io2_w      - *ptr_iop_w)
--//  - distance >= 1
--//  - distance <= (*ptr_iop_w - io0_w)
--static inline uint32_t  //
--wuffs_base__io_writer__limited_copy_u32_from_history_fast(uint8_t** ptr_iop_w,
--                                                          uint8_t* io0_w,
--                                                          uint8_t* io2_w,
--                                                          uint32_t length,
--                                                          uint32_t distance) {
--  uint8_t* p = *ptr_iop_w;
--  uint8_t* q = p - distance;
--  uint32_t n = length;
--  for (; n >= 3; n -= 3) {
--    *p++ = *q++;
--    *p++ = *q++;
--    *p++ = *q++;
--  }
--  for (; n; n--) {
--    *p++ = *q++;
-+// See https://en.wikipedia.org/wiki/Opaque_pointer#C
-+
-+#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
-+
-+struct wuffs_xxhash64__hasher__struct {
-+  // Do not access the private_impl's or private_data's fields directly. There
-+  // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
-+  // the wuffs_foo__bar__baz functions.
-+  //
-+  // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
-+  // can be stack allocated when WUFFS_IMPLEMENTATION is defined.
-+
-+  struct {
-+    uint32_t magic;
-+    uint32_t active_coroutine;
-+    wuffs_base__vtable vtable_for__wuffs_base__hasher_u64;
-+    wuffs_base__vtable null_vtable;
-+
-+    uint64_t f_length_modulo_u64;
-+    bool f_length_overflows_u64;
-+    uint8_t f_padding0;
-+    uint8_t f_padding1;
-+    uint8_t f_padding2;
-+    uint32_t f_buf_len;
-+    uint8_t f_buf_data[32];
-+    uint64_t f_v0;
-+    uint64_t f_v1;
-+    uint64_t f_v2;
-+    uint64_t f_v3;
-+  } private_impl;
-+
-+#ifdef __cplusplus
-+#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
-+  using unique_ptr = std::unique_ptr<wuffs_xxhash64__hasher, wuffs_unique_ptr_deleter>;
-+
-+  // On failure, the alloc_etc functions return nullptr. They don't throw.
-+
-+  static inline unique_ptr
-+  alloc() {
-+    return unique_ptr(wuffs_xxhash64__hasher__alloc());
-   }
--  *ptr_iop_w = p;
--  return length;
--}
- 
--// wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast
--// copies the previous byte (the one immediately before *ptr_iop_w), copying 8
--// byte chunks at a time. Each chunk contains 8 repetitions of the same byte.
--//
--// In terms of number of bytes copied, length is rounded up to a multiple of 8.
--// As a special case, a zero length rounds up to 8 (even though 0 is already a
--// multiple of 8), since there is always at least one 8 byte chunk copied.
--//
--// In terms of advancing *ptr_iop_w, length is not rounded up.
--//
--// The caller needs to prove that:
--//  - (length + 8) <= (io2_w      - *ptr_iop_w)
--//  - distance     == 1
--//  - distance     <= (*ptr_iop_w - io0_w)
--static inline uint32_t  //
--wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast(
--    uint8_t** ptr_iop_w,
--    uint8_t* io0_w,
--    uint8_t* io2_w,
--    uint32_t length,
--    uint32_t distance) {
--  uint8_t* p = *ptr_iop_w;
--  uint64_t x = p[-1];
--  x |= x << 8;
--  x |= x << 16;
--  x |= x << 32;
--  uint32_t n = length;
--  while (1) {
--    wuffs_base__poke_u64le__no_bounds_check(p, x);
--    if (n <= 8) {
--      p += n;
--      break;
--    }
--    p += 8;
--    n -= 8;
-+  static inline wuffs_base__hasher_u64::unique_ptr
-+  alloc_as__wuffs_base__hasher_u64() {
-+    return wuffs_base__hasher_u64::unique_ptr(
-+        wuffs_xxhash64__hasher__alloc_as__wuffs_base__hasher_u64());
-   }
--  *ptr_iop_w = p;
--  return length;
--}
-+#endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
- 
--// wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast is
--// like the wuffs_base__io_writer__limited_copy_u32_from_history_fast function
--// above, but copies 8 byte chunks at a time.
--//
--// In terms of number of bytes copied, length is rounded up to a multiple of 8.
--// As a special case, a zero length rounds up to 8 (even though 0 is already a
--// multiple of 8), since there is always at least one 8 byte chunk copied.
--//
--// In terms of advancing *ptr_iop_w, length is not rounded up.
--//
--// The caller needs to prove that:
--//  - (length + 8) <= (io2_w      - *ptr_iop_w)
--//  - distance     >= 8
--//  - distance     <= (*ptr_iop_w - io0_w)
--static inline uint32_t  //
--wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast(
--    uint8_t** ptr_iop_w,
--    uint8_t* io0_w,
--    uint8_t* io2_w,
--    uint32_t length,
--    uint32_t distance) {
--  uint8_t* p = *ptr_iop_w;
--  uint8_t* q = p - distance;
--  uint32_t n = length;
--  while (1) {
--    memcpy(p, q, 8);
--    if (n <= 8) {
--      p += n;
--      break;
--    }
--    p += 8;
--    q += 8;
--    n -= 8;
-+#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
-+  // Disallow constructing or copying an object via standard C++ mechanisms,
-+  // e.g. the "new" operator, as this struct is intentionally opaque. Its total
-+  // size and field layout is not part of the public, stable, memory-safe API.
-+  // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
-+  // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
-+  // their first argument) rather than tweaking bar.private_impl.qux fields.
-+  //
-+  // In C, we can just leave wuffs_foo__bar as an incomplete type (unless
-+  // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
-+  // order to provide convenience methods. These forward on "this", so that you
-+  // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
-+  wuffs_xxhash64__hasher__struct() = delete;
-+  wuffs_xxhash64__hasher__struct(const wuffs_xxhash64__hasher__struct&) = delete;
-+  wuffs_xxhash64__hasher__struct& operator=(
-+      const wuffs_xxhash64__hasher__struct&) = delete;
-+#endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
-+
-+#if !defined(WUFFS_IMPLEMENTATION)
-+  // As above, the size of the struct is not part of the public API, and unless
-+  // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
-+  // allocated, not stack allocated. Its size is not intended to be known at
-+  // compile time, but it is unfortunately divulged as a side effect of
-+  // defining C++ convenience methods. Use "sizeof__T()", calling the function,
-+  // instead of "sizeof T", invoking the operator. To make the two values
-+  // different, so that passing the latter will be rejected by the initialize
-+  // function, we add an arbitrary amount of dead weight.
-+  uint8_t dead_weight[123000000];  // 123 MB.
-+#endif  // !defined(WUFFS_IMPLEMENTATION)
-+
-+  inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+  initialize(
-+      size_t sizeof_star_self,
-+      uint64_t wuffs_version,
-+      uint32_t options) {
-+    return wuffs_xxhash64__hasher__initialize(
-+        this, sizeof_star_self, wuffs_version, options);
-   }
--  *ptr_iop_w = p;
--  return length;
--}
- 
--static inline uint32_t  //
--wuffs_base__io_writer__limited_copy_u32_from_reader(uint8_t** ptr_iop_w,
--                                                    uint8_t* io2_w,
--                                                    uint32_t length,
--                                                    const uint8_t** ptr_iop_r,
--                                                    const uint8_t* io2_r) {
--  uint8_t* iop_w = *ptr_iop_w;
--  size_t n = length;
--  if (n > ((size_t)(io2_w - iop_w))) {
--    n = (size_t)(io2_w - iop_w);
-+  inline wuffs_base__hasher_u64*
-+  upcast_as__wuffs_base__hasher_u64() {
-+    return (wuffs_base__hasher_u64*)this;
-   }
--  const uint8_t* iop_r = *ptr_iop_r;
--  if (n > ((size_t)(io2_r - iop_r))) {
--    n = (size_t)(io2_r - iop_r);
-+
-+  inline uint64_t
-+  get_quirk(
-+      uint32_t a_key) const {
-+    return wuffs_xxhash64__hasher__get_quirk(this, a_key);
-   }
--  if (n > 0) {
--    memmove(iop_w, iop_r, n);
--    *ptr_iop_w += n;
--    *ptr_iop_r += n;
-+
-+  inline wuffs_base__status
-+  set_quirk(
-+      uint32_t a_key,
-+      uint64_t a_value) {
-+    return wuffs_xxhash64__hasher__set_quirk(this, a_key, a_value);
-   }
--  return (uint32_t)(n);
--}
- 
--static inline uint32_t  //
--wuffs_base__io_writer__limited_copy_u32_from_slice(uint8_t** ptr_iop_w,
--                                                   uint8_t* io2_w,
--                                                   uint32_t length,
--                                                   wuffs_base__slice_u8 src) {
--  uint8_t* iop_w = *ptr_iop_w;
--  size_t n = src.len;
--  if (n > length) {
--    n = length;
-+  inline wuffs_base__empty_struct
-+  update(
-+      wuffs_base__slice_u8 a_x) {
-+    return wuffs_xxhash64__hasher__update(this, a_x);
-   }
--  if (n > ((size_t)(io2_w - iop_w))) {
--    n = (size_t)(io2_w - iop_w);
-+
-+  inline uint64_t
-+  update_u64(
-+      wuffs_base__slice_u8 a_x) {
-+    return wuffs_xxhash64__hasher__update_u64(this, a_x);
-   }
--  if (n > 0) {
--    memmove(iop_w, src.ptr, n);
--    *ptr_iop_w += n;
-+
-+  inline uint64_t
-+  checksum_u64() const {
-+    return wuffs_xxhash64__hasher__checksum_u64(this);
-   }
--  return (uint32_t)(n);
--}
- 
--static inline wuffs_base__io_buffer*  //
--wuffs_base__io_writer__set(wuffs_base__io_buffer* b,
--                           uint8_t** ptr_iop_w,
--                           uint8_t** ptr_io0_w,
--                           uint8_t** ptr_io1_w,
--                           uint8_t** ptr_io2_w,
--                           wuffs_base__slice_u8 data,
--                           uint64_t history_position) {
--  b->data = data;
--  b->meta.wi = 0;
--  b->meta.ri = 0;
--  b->meta.pos = history_position;
--  b->meta.closed = false;
-+#endif  // __cplusplus
-+};  // struct wuffs_xxhash64__hasher__struct
- 
--  *ptr_iop_w = data.ptr;
--  *ptr_io0_w = data.ptr;
--  *ptr_io1_w = data.ptr;
--  *ptr_io2_w = data.ptr + data.len;
-+#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
- 
--  return b;
--}
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH64) || defined(WUFFS_NONMONOLITHIC)
- 
--// ---------------- I/O (Utility)
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XZ) || defined(WUFFS_NONMONOLITHIC)
- 
--#define wuffs_base__utility__empty_io_reader wuffs_base__empty_io_reader
--#define wuffs_base__utility__empty_io_writer wuffs_base__empty_io_writer
-+// ---------------- Status Codes
- 
--// ---------------- Tokens
-+extern const char wuffs_xz__error__bad_bcj_offset[];
-+extern const char wuffs_xz__error__bad_block_header[];
-+extern const char wuffs_xz__error__bad_checksum[];
-+extern const char wuffs_xz__error__bad_filter[];
-+extern const char wuffs_xz__error__bad_footer[];
-+extern const char wuffs_xz__error__bad_header[];
-+extern const char wuffs_xz__error__bad_header_concatenated_stream[];
-+extern const char wuffs_xz__error__bad_index[];
-+extern const char wuffs_xz__error__bad_padding[];
-+extern const char wuffs_xz__error__truncated_input[];
-+extern const char wuffs_xz__error__unsupported_checksum_algorithm[];
-+extern const char wuffs_xz__error__unsupported_filter[];
-+extern const char wuffs_xz__error__unsupported_filter_combination[];
- 
--// ---------------- Tokens (Utility)
-+// ---------------- Public Consts
- 
--// ---------------- Memory Allocation
-+#define WUFFS_XZ__QUIRK_DECODE_STANDALONE_CONCATENATED_STREAMS 2021322752u
- 
--// ---------------- Images
-+#define WUFFS_XZ__DECODER_DST_HISTORY_RETAIN_LENGTH_MAX_INCL_WORST_CASE 0u
- 
--WUFFS_BASE__MAYBE_STATIC uint64_t  //
--wuffs_base__pixel_swizzler__limited_swizzle_u32_interleaved_from_reader(
--    const wuffs_base__pixel_swizzler* p,
--    uint32_t up_to_num_pixels,
--    wuffs_base__slice_u8 dst,
--    wuffs_base__slice_u8 dst_palette,
--    const uint8_t** ptr_iop_r,
--    const uint8_t* io2_r);
-+#define WUFFS_XZ__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 4294967568u
- 
--WUFFS_BASE__MAYBE_STATIC uint64_t  //
--wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
--    const wuffs_base__pixel_swizzler* p,
--    wuffs_base__slice_u8 dst,
--    wuffs_base__slice_u8 dst_palette,
--    const uint8_t** ptr_iop_r,
--    const uint8_t* io2_r);
-+// ---------------- Struct Declarations
- 
--WUFFS_BASE__MAYBE_STATIC uint64_t  //
--wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(
--    const wuffs_base__pixel_swizzler* p,
--    wuffs_base__slice_u8 dst,
--    wuffs_base__slice_u8 dst_palette,
--    uint64_t num_pixels);
-+typedef struct wuffs_xz__decoder__struct wuffs_xz__decoder;
- 
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status  //
--wuffs_base__pixel_swizzler__swizzle_ycck(
--    const wuffs_base__pixel_swizzler* p,
--    wuffs_base__pixel_buffer* dst,
--    wuffs_base__slice_u8 dst_palette,
--    uint32_t width,
--    uint32_t height,
--    wuffs_base__slice_u8 src0,
--    wuffs_base__slice_u8 src1,
--    wuffs_base__slice_u8 src2,
--    wuffs_base__slice_u8 src3,
--    uint32_t width0,
--    uint32_t width1,
--    uint32_t width2,
--    uint32_t width3,
--    uint32_t height0,
--    uint32_t height1,
--    uint32_t height2,
--    uint32_t height3,
--    uint32_t stride0,
--    uint32_t stride1,
--    uint32_t stride2,
--    uint32_t stride3,
--    uint8_t h0,
--    uint8_t h1,
--    uint8_t h2,
--    uint8_t h3,
--    uint8_t v0,
--    uint8_t v1,
--    uint8_t v2,
--    uint8_t v3,
--    bool is_rgb_or_cmyk,
--    bool triangle_filter_for_2to1,
--    wuffs_base__slice_u8 scratch_buffer_2k);
-+#ifdef __cplusplus
-+extern "C" {
-+#endif
- 
--// ---------------- Images (Utility)
-+// ---------------- Public Initializer Prototypes
- 
--#define wuffs_base__utility__make_pixel_format wuffs_base__make_pixel_format
-+// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
-+// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
-+//
-+// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
-+// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
- 
--// ---------------- String Conversions
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_xz__decoder__initialize(
-+    wuffs_xz__decoder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options);
- 
--// ---------------- Unicode and UTF-8
-+size_t
-+sizeof__wuffs_xz__decoder(void);
- 
--// ----------------
-+// ---------------- Allocs
- 
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
--    defined(WUFFS_CONFIG__MODULE__BASE__CORE)
-+// These functions allocate and initialize Wuffs structs. They return NULL if
-+// memory allocation fails. If they return non-NULL, there is no need to call
-+// wuffs_foo__bar__initialize, but the caller is responsible for eventually
-+// calling free on the returned pointer. That pointer is effectively a C++
-+// std::unique_ptr<T, wuffs_unique_ptr_deleter>.
- 
--const uint8_t wuffs_base__low_bits_mask__u8[8] = {
--    0x00, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F,
--};
-+wuffs_xz__decoder*
-+wuffs_xz__decoder__alloc(void);
- 
--const uint16_t wuffs_base__low_bits_mask__u16[16] = {
--    0x0000, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F, 0x003F, 0x007F,
--    0x00FF, 0x01FF, 0x03FF, 0x07FF, 0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF,
--};
-+static inline wuffs_base__io_transformer*
-+wuffs_xz__decoder__alloc_as__wuffs_base__io_transformer(void) {
-+  return (wuffs_base__io_transformer*)(wuffs_xz__decoder__alloc());
-+}
- 
--const uint32_t wuffs_base__low_bits_mask__u32[32] = {
--    0x00000000, 0x00000001, 0x00000003, 0x00000007, 0x0000000F, 0x0000001F,
--    0x0000003F, 0x0000007F, 0x000000FF, 0x000001FF, 0x000003FF, 0x000007FF,
--    0x00000FFF, 0x00001FFF, 0x00003FFF, 0x00007FFF, 0x0000FFFF, 0x0001FFFF,
--    0x0003FFFF, 0x0007FFFF, 0x000FFFFF, 0x001FFFFF, 0x003FFFFF, 0x007FFFFF,
--    0x00FFFFFF, 0x01FFFFFF, 0x03FFFFFF, 0x07FFFFFF, 0x0FFFFFFF, 0x1FFFFFFF,
--    0x3FFFFFFF, 0x7FFFFFFF,
--};
-+// ---------------- Upcasts
- 
--const uint64_t wuffs_base__low_bits_mask__u64[64] = {
--    0x0000000000000000, 0x0000000000000001, 0x0000000000000003,
--    0x0000000000000007, 0x000000000000000F, 0x000000000000001F,
--    0x000000000000003F, 0x000000000000007F, 0x00000000000000FF,
--    0x00000000000001FF, 0x00000000000003FF, 0x00000000000007FF,
--    0x0000000000000FFF, 0x0000000000001FFF, 0x0000000000003FFF,
--    0x0000000000007FFF, 0x000000000000FFFF, 0x000000000001FFFF,
--    0x000000000003FFFF, 0x000000000007FFFF, 0x00000000000FFFFF,
--    0x00000000001FFFFF, 0x00000000003FFFFF, 0x00000000007FFFFF,
--    0x0000000000FFFFFF, 0x0000000001FFFFFF, 0x0000000003FFFFFF,
--    0x0000000007FFFFFF, 0x000000000FFFFFFF, 0x000000001FFFFFFF,
--    0x000000003FFFFFFF, 0x000000007FFFFFFF, 0x00000000FFFFFFFF,
--    0x00000001FFFFFFFF, 0x00000003FFFFFFFF, 0x00000007FFFFFFFF,
--    0x0000000FFFFFFFFF, 0x0000001FFFFFFFFF, 0x0000003FFFFFFFFF,
--    0x0000007FFFFFFFFF, 0x000000FFFFFFFFFF, 0x000001FFFFFFFFFF,
--    0x000003FFFFFFFFFF, 0x000007FFFFFFFFFF, 0x00000FFFFFFFFFFF,
--    0x00001FFFFFFFFFFF, 0x00003FFFFFFFFFFF, 0x00007FFFFFFFFFFF,
--    0x0000FFFFFFFFFFFF, 0x0001FFFFFFFFFFFF, 0x0003FFFFFFFFFFFF,
--    0x0007FFFFFFFFFFFF, 0x000FFFFFFFFFFFFF, 0x001FFFFFFFFFFFFF,
--    0x003FFFFFFFFFFFFF, 0x007FFFFFFFFFFFFF, 0x00FFFFFFFFFFFFFF,
--    0x01FFFFFFFFFFFFFF, 0x03FFFFFFFFFFFFFF, 0x07FFFFFFFFFFFFFF,
--    0x0FFFFFFFFFFFFFFF, 0x1FFFFFFFFFFFFFFF, 0x3FFFFFFFFFFFFFFF,
--    0x7FFFFFFFFFFFFFFF,
--};
-+static inline wuffs_base__io_transformer*
-+wuffs_xz__decoder__upcast_as__wuffs_base__io_transformer(
-+    wuffs_xz__decoder* p) {
-+  return (wuffs_base__io_transformer*)p;
-+}
- 
--const uint32_t wuffs_base__pixel_format__bits_per_channel[16] = {
--    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
--    0x08, 0x0A, 0x0C, 0x10, 0x18, 0x20, 0x30, 0x40,
--};
-+// ---------------- Public Function Prototypes
- 
--const char wuffs_base__note__i_o_redirect[] = "@base: I/O redirect";
--const char wuffs_base__note__end_of_data[] = "@base: end of data";
--const char wuffs_base__note__metadata_reported[] = "@base: metadata reported";
--const char wuffs_base__suspension__even_more_information[] = "$base: even more information";
--const char wuffs_base__suspension__mispositioned_read[] = "$base: mispositioned read";
--const char wuffs_base__suspension__mispositioned_write[] = "$base: mispositioned write";
--const char wuffs_base__suspension__short_read[] = "$base: short read";
--const char wuffs_base__suspension__short_write[] = "$base: short write";
--const char wuffs_base__error__bad_i_o_position[] = "#base: bad I/O position";
--const char wuffs_base__error__bad_argument_length_too_short[] = "#base: bad argument (length too short)";
--const char wuffs_base__error__bad_argument[] = "#base: bad argument";
--const char wuffs_base__error__bad_call_sequence[] = "#base: bad call sequence";
--const char wuffs_base__error__bad_data[] = "#base: bad data";
--const char wuffs_base__error__bad_receiver[] = "#base: bad receiver";
--const char wuffs_base__error__bad_restart[] = "#base: bad restart";
--const char wuffs_base__error__bad_sizeof_receiver[] = "#base: bad sizeof receiver";
--const char wuffs_base__error__bad_vtable[] = "#base: bad vtable";
--const char wuffs_base__error__bad_workbuf_length[] = "#base: bad workbuf length";
--const char wuffs_base__error__bad_wuffs_version[] = "#base: bad wuffs version";
--const char wuffs_base__error__cannot_return_a_suspension[] = "#base: cannot return a suspension";
--const char wuffs_base__error__disabled_by_previous_error[] = "#base: disabled by previous error";
--const char wuffs_base__error__initialize_falsely_claimed_already_zeroed[] = "#base: initialize falsely claimed already zeroed";
--const char wuffs_base__error__initialize_not_called[] = "#base: initialize not called";
--const char wuffs_base__error__interleaved_coroutine_calls[] = "#base: interleaved coroutine calls";
--const char wuffs_base__error__no_more_information[] = "#base: no more information";
--const char wuffs_base__error__not_enough_data[] = "#base: not enough data";
--const char wuffs_base__error__out_of_bounds[] = "#base: out of bounds";
--const char wuffs_base__error__unsupported_image_dimension[] = "#base: unsupported image dimension";
--const char wuffs_base__error__unsupported_method[] = "#base: unsupported method";
--const char wuffs_base__error__unsupported_option[] = "#base: unsupported option";
--const char wuffs_base__error__unsupported_pixel_swizzler_option[] = "#base: unsupported pixel swizzler option";
--const char wuffs_base__error__too_much_data[] = "#base: too much data";
--
--const char wuffs_base__hasher_u32__vtable_name[] = "{vtable}wuffs_base__hasher_u32";
--const char wuffs_base__hasher_u64__vtable_name[] = "{vtable}wuffs_base__hasher_u64";
--const char wuffs_base__image_decoder__vtable_name[] = "{vtable}wuffs_base__image_decoder";
--const char wuffs_base__io_transformer__vtable_name[] = "{vtable}wuffs_base__io_transformer";
--const char wuffs_base__token_decoder__vtable_name[] = "{vtable}wuffs_base__token_decoder";
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_xz__decoder__get_quirk(
-+    const wuffs_xz__decoder* self,
-+    uint32_t a_key);
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) ||
--        // defined(WUFFS_CONFIG__MODULE__BASE)  ||
--        // defined(WUFFS_CONFIG__MODULE__BASE__CORE)
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_xz__decoder__set_quirk(
-+    wuffs_xz__decoder* self,
-+    uint32_t a_key,
-+    uint64_t a_value);
- 
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
--    defined(WUFFS_CONFIG__MODULE__BASE__INTERFACES)
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
-+wuffs_xz__decoder__dst_history_retain_length(
-+    const wuffs_xz__decoder* self);
- 
--// ---------------- Interface Definitions.
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_xz__decoder__workbuf_len(
-+    const wuffs_xz__decoder* self);
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_base__hasher_u32__checksum_u32(
--    const wuffs_base__hasher_u32* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_xz__decoder__transform_io(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf);
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) {
--      const wuffs_base__hasher_u32__func_ptrs* func_ptrs =
--          (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->checksum_u32)(self);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+#ifdef __cplusplus
-+}  // extern "C"
-+#endif
- 
--  return 0;
--}
-+// ---------------- Struct Definitions
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_base__hasher_u32__get_quirk(
--    const wuffs_base__hasher_u32* self,
--    uint32_t a_key) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
-+// These structs' fields, and the sizeof them, are private implementation
-+// details that aren't guaranteed to be stable across Wuffs versions.
-+//
-+// See https://en.wikipedia.org/wiki/Opaque_pointer#C
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) {
--      const wuffs_base__hasher_u32__func_ptrs* func_ptrs =
--          (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->get_quirk)(self, a_key);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
- 
--  return 0;
--}
-+struct wuffs_xz__decoder__struct {
-+  // Do not access the private_impl's or private_data's fields directly. There
-+  // is no API/ABI compatibility or safety guarantee if you do so. Instead, use
-+  // the wuffs_foo__bar__baz functions.
-+  //
-+  // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
-+  // can be stack allocated when WUFFS_IMPLEMENTATION is defined.
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_base__hasher_u32__set_quirk(
--    wuffs_base__hasher_u32* self,
--    uint32_t a_key,
--    uint64_t a_value) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--            ? wuffs_base__error__disabled_by_previous_error
--            : wuffs_base__error__initialize_not_called);
--  }
-+  struct {
-+    uint32_t magic;
-+    uint32_t active_coroutine;
-+    wuffs_base__vtable vtable_for__wuffs_base__io_transformer;
-+    wuffs_base__vtable null_vtable;
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) {
--      const wuffs_base__hasher_u32__func_ptrs* func_ptrs =
--          (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->set_quirk)(self, a_key, a_value);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+    uint32_t f_filters[3];
-+    uint32_t f_num_non_final_filters;
-+    uint8_t f_checksummer;
-+    bool f_ignore_checksum;
-+    bool f_standalone_format;
-+    bool f_lzma_needs_reset;
-+    bool f_block_has_compressed_size;
-+    bool f_block_has_uncompressed_size;
-+    uint8_t f_bcj_undo_index;
-+    uint32_t f_bcj_pos;
-+    uint32_t f_bcj_x86_prev_mask;
-+    uint64_t f_block_compressed_size;
-+    uint64_t f_block_uncompressed_size;
-+    uint64_t f_compressed_size_for_index;
-+    uint32_t f_verification_have_hashed_sizes[2];
-+    uint32_t f_verification_want_hashed_sizes[2];
-+    uint64_t f_verification_have_total_sizes[2];
-+    uint64_t f_verification_want_total_sizes[2];
-+    uint64_t f_num_actual_blocks;
-+    uint64_t f_num_index_blocks;
-+    uint64_t f_index_block_compressed_size;
-+    uint64_t f_index_block_uncompressed_size;
-+    uint64_t f_backwards_size;
-+    bool f_started_verify_index;
-+    uint16_t f_flags;
-+
-+    uint8_t (*choosy_apply_non_final_filters)(
-+        wuffs_xz__decoder* self,
-+        wuffs_base__slice_u8 a_dst_slice);
-+    uint32_t p_transform_io;
-+    uint32_t p_do_transform_io;
-+    uint32_t p_decode_block_header_with_padding;
-+    uint32_t p_decode_block_header_sans_padding;
-+    uint32_t p_verify_index;
-+    uint32_t p_verify_footer;
-+  } private_impl;
- 
--  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
--}
-+  struct {
-+    uint8_t f_filter_data[3][256];
-+    wuffs_crc32__ieee_hasher f_crc32;
-+    wuffs_crc64__ecma_hasher f_crc64;
-+    wuffs_sha256__hasher f_sha256;
-+    wuffs_lzma__decoder f_lzma;
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_base__hasher_u32__update(
--    wuffs_base__hasher_u32* self,
--    wuffs_base__slice_u8 a_x) {
--  if (!self) {
--    return wuffs_base__make_empty_struct();
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_empty_struct();
--  }
-+    struct {
-+      uint32_t v_checksum32_have;
-+      uint32_t v_checksum32_want;
-+      wuffs_base__bitvec256 v_checksum256_have;
-+      uint64_t v_compressed_size;
-+      uint64_t v_uncompressed_size;
-+      uint64_t scratch;
-+    } s_do_transform_io;
-+    struct {
-+      uint64_t v_padded_size_have;
-+      uint64_t v_padded_size_want;
-+    } s_decode_block_header_with_padding;
-+    struct {
-+      uint8_t v_flags;
-+      uint8_t v_filter_id;
-+      uint32_t v_shift;
-+      uint32_t v_f;
-+      uint64_t scratch;
-+    } s_decode_block_header_sans_padding;
-+    struct {
-+      uint32_t v_shift;
-+    } s_verify_index;
-+    struct {
-+      uint64_t scratch;
-+    } s_verify_footer;
-+  } private_data;
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) {
--      const wuffs_base__hasher_u32__func_ptrs* func_ptrs =
--          (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->update)(self, a_x);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+#ifdef __cplusplus
-+#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
-+  using unique_ptr = std::unique_ptr<wuffs_xz__decoder, wuffs_unique_ptr_deleter>;
- 
--  return wuffs_base__make_empty_struct();
--}
-+  // On failure, the alloc_etc functions return nullptr. They don't throw.
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_base__hasher_u32__update_u32(
--    wuffs_base__hasher_u32* self,
--    wuffs_base__slice_u8 a_x) {
--  if (!self) {
--    return 0;
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return 0;
-+  static inline unique_ptr
-+  alloc() {
-+    return unique_ptr(wuffs_xz__decoder__alloc());
-   }
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) {
--      const wuffs_base__hasher_u32__func_ptrs* func_ptrs =
--          (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->update_u32)(self, a_x);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
-+  static inline wuffs_base__io_transformer::unique_ptr
-+  alloc_as__wuffs_base__io_transformer() {
-+    return wuffs_base__io_transformer::unique_ptr(
-+        wuffs_xz__decoder__alloc_as__wuffs_base__io_transformer());
-   }
-+#endif  // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
- 
--  return 0;
--}
-+#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
-+  // Disallow constructing or copying an object via standard C++ mechanisms,
-+  // e.g. the "new" operator, as this struct is intentionally opaque. Its total
-+  // size and field layout is not part of the public, stable, memory-safe API.
-+  // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
-+  // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
-+  // their first argument) rather than tweaking bar.private_impl.qux fields.
-+  //
-+  // In C, we can just leave wuffs_foo__bar as an incomplete type (unless
-+  // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
-+  // order to provide convenience methods. These forward on "this", so that you
-+  // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
-+  wuffs_xz__decoder__struct() = delete;
-+  wuffs_xz__decoder__struct(const wuffs_xz__decoder__struct&) = delete;
-+  wuffs_xz__decoder__struct& operator=(
-+      const wuffs_xz__decoder__struct&) = delete;
-+#endif  // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
- 
--// --------
-+#if !defined(WUFFS_IMPLEMENTATION)
-+  // As above, the size of the struct is not part of the public API, and unless
-+  // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
-+  // allocated, not stack allocated. Its size is not intended to be known at
-+  // compile time, but it is unfortunately divulged as a side effect of
-+  // defining C++ convenience methods. Use "sizeof__T()", calling the function,
-+  // instead of "sizeof T", invoking the operator. To make the two values
-+  // different, so that passing the latter will be rejected by the initialize
-+  // function, we add an arbitrary amount of dead weight.
-+  uint8_t dead_weight[123000000];  // 123 MB.
-+#endif  // !defined(WUFFS_IMPLEMENTATION)
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_base__hasher_u64__checksum_u64(
--    const wuffs_base__hasher_u64* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
-+  inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+  initialize(
-+      size_t sizeof_star_self,
-+      uint64_t wuffs_version,
-+      uint32_t options) {
-+    return wuffs_xz__decoder__initialize(
-+        this, sizeof_star_self, wuffs_version, options);
-   }
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) {
--      const wuffs_base__hasher_u64__func_ptrs* func_ptrs =
--          (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->checksum_u64)(self);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
-+  inline wuffs_base__io_transformer*
-+  upcast_as__wuffs_base__io_transformer() {
-+    return (wuffs_base__io_transformer*)this;
-   }
- 
--  return 0;
--}
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_base__hasher_u64__get_quirk(
--    const wuffs_base__hasher_u64* self,
--    uint32_t a_key) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
-+  inline uint64_t
-+  get_quirk(
-+      uint32_t a_key) const {
-+    return wuffs_xz__decoder__get_quirk(this, a_key);
-   }
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) {
--      const wuffs_base__hasher_u64__func_ptrs* func_ptrs =
--          (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->get_quirk)(self, a_key);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
-+  inline wuffs_base__status
-+  set_quirk(
-+      uint32_t a_key,
-+      uint64_t a_value) {
-+    return wuffs_xz__decoder__set_quirk(this, a_key, a_value);
-   }
- 
--  return 0;
--}
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_base__hasher_u64__set_quirk(
--    wuffs_base__hasher_u64* self,
--    uint32_t a_key,
--    uint64_t a_value) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--            ? wuffs_base__error__disabled_by_previous_error
--            : wuffs_base__error__initialize_not_called);
-+  inline wuffs_base__optional_u63
-+  dst_history_retain_length() const {
-+    return wuffs_xz__decoder__dst_history_retain_length(this);
-   }
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) {
--      const wuffs_base__hasher_u64__func_ptrs* func_ptrs =
--          (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->set_quirk)(self, a_key, a_value);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
-+  inline wuffs_base__range_ii_u64
-+  workbuf_len() const {
-+    return wuffs_xz__decoder__workbuf_len(this);
-   }
- 
--  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
--}
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_base__hasher_u64__update(
--    wuffs_base__hasher_u64* self,
--    wuffs_base__slice_u8 a_x) {
--  if (!self) {
--    return wuffs_base__make_empty_struct();
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_empty_struct();
-+  inline wuffs_base__status
-+  transform_io(
-+      wuffs_base__io_buffer* a_dst,
-+      wuffs_base__io_buffer* a_src,
-+      wuffs_base__slice_u8 a_workbuf) {
-+    return wuffs_xz__decoder__transform_io(this, a_dst, a_src, a_workbuf);
-   }
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) {
--      const wuffs_base__hasher_u64__func_ptrs* func_ptrs =
--          (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->update)(self, a_x);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+#endif  // __cplusplus
-+};  // struct wuffs_xz__decoder__struct
- 
--  return wuffs_base__make_empty_struct();
--}
-+#endif  // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_base__hasher_u64__update_u64(
--    wuffs_base__hasher_u64* self,
--    wuffs_base__slice_u8 a_x) {
--  if (!self) {
--    return 0;
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return 0;
--  }
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XZ) || defined(WUFFS_NONMONOLITHIC)
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) {
--      const wuffs_base__hasher_u64__func_ptrs* func_ptrs =
--          (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->update_u64)(self, a_x);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+#if defined(__cplusplus) && defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
- 
--  return 0;
--}
-+// ---------------- Auxiliary - Base
- 
--// --------
-+// Auxiliary code is discussed at
-+// https://github.com/google/wuffs/blob/main/doc/note/auxiliary-code.md
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_base__image_decoder__decode_frame(
--    wuffs_base__image_decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--            ? wuffs_base__error__disabled_by_previous_error
--            : wuffs_base__error__initialize_not_called);
--  }
-+#include <stdio.h>
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
--      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
--          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->decode_frame)(self, a_dst, a_src, a_blend, a_workbuf, a_opts);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+#include <string>
-+#include <utility>
- 
--  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
--}
-+namespace wuffs_aux {
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_base__image_decoder__decode_frame_config(
--    wuffs_base__image_decoder* self,
--    wuffs_base__frame_config* a_dst,
--    wuffs_base__io_buffer* a_src) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--            ? wuffs_base__error__disabled_by_previous_error
--            : wuffs_base__error__initialize_not_called);
--  }
-+using IOBuffer = wuffs_base__io_buffer;
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
--      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
--          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->decode_frame_config)(self, a_dst, a_src);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+// MemOwner represents ownership of some memory. Dynamically allocated memory
-+// (e.g. from malloc or new) is typically paired with free or delete, invoked
-+// when the std::unique_ptr is destroyed. Statically allocated memory might use
-+// MemOwner(nullptr, &free), even if that statically allocated memory is not
-+// nullptr, since calling free(nullptr) is a no-op.
-+using MemOwner = std::unique_ptr<void, decltype(&free)>;
- 
--  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
--}
-+using QuirkKeyValuePair = std::pair<uint32_t, uint64_t>;
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_base__image_decoder__decode_image_config(
--    wuffs_base__image_decoder* self,
--    wuffs_base__image_config* a_dst,
--    wuffs_base__io_buffer* a_src) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--            ? wuffs_base__error__disabled_by_previous_error
--            : wuffs_base__error__initialize_not_called);
--  }
-+namespace sync_io {
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
--      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
--          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->decode_image_config)(self, a_dst, a_src);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+// --------
- 
--  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
--}
-+// DynIOBuffer is an IOBuffer that is backed by a dynamically sized byte array.
-+// It owns that backing array and will free it in its destructor.
-+//
-+// The array size can be explicitly extended (by calling the grow method) but,
-+// unlike a C++ std::vector, there is no implicit extension (e.g. by calling
-+// std::vector::insert) and its maximum size is capped by the max_incl
-+// constructor argument.
-+//
-+// It contains an IOBuffer-typed field whose reader side provides access to
-+// previously written bytes and whose writer side provides access to the
-+// allocated but not-yet-written-to slack space. For Go programmers, this slack
-+// space is roughly analogous to the s[len(s):cap(s)] space of a slice s.
-+class DynIOBuffer {
-+ public:
-+  enum GrowResult {
-+    OK = 0,
-+    FailedMaxInclExceeded = 1,
-+    FailedOutOfMemory = 2,
-+  };
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
--wuffs_base__image_decoder__frame_dirty_rect(
--    const wuffs_base__image_decoder* self) {
--  if (!self) {
--    return wuffs_base__utility__empty_rect_ie_u32();
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_rect_ie_u32();
--  }
-+  // m_buf holds the dynamically sized byte array and its read/write indexes:
-+  //  - m_buf.meta.wi  is roughly analogous to a Go slice's length.
-+  //  - m_buf.data.len is roughly analogous to a Go slice's capacity. It is
-+  //    also equal to the m_buf.data.ptr malloc/realloc size.
-+  //
-+  // Users should not modify the m_buf.data.ptr or m_buf.data.len fields (as
-+  // they are conceptually private to this class), but they can modify the
-+  // bytes referenced by that pointer-length pair (e.g. compactions).
-+  IOBuffer m_buf;
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
--      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
--          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->frame_dirty_rect)(self);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+  // m_max_incl is an inclusive upper bound on the backing array size.
-+  const uint64_t m_max_incl;
- 
--  return wuffs_base__utility__empty_rect_ie_u32();
--}
-+  // Constructor and destructor.
-+  explicit DynIOBuffer(uint64_t max_incl);
-+  ~DynIOBuffer();
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_base__image_decoder__get_quirk(
--    const wuffs_base__image_decoder* self,
--    uint32_t a_key) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
-+  // Drop frees the byte array and resets m_buf. The DynIOBuffer can still be
-+  // used after a drop call. It just restarts from zero.
-+  void drop();
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
--      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
--          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->get_quirk)(self, a_key);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+  // grow ensures that the byte array size is at least min_incl and at most
-+  // max_incl. It returns FailedMaxInclExceeded if that would require
-+  // allocating more than max_incl bytes, including the case where (min_incl >
-+  // max_incl). It returns FailedOutOfMemory if memory allocation failed.
-+  GrowResult grow(uint64_t min_incl);
- 
--  return 0;
--}
-+ private:
-+  // Delete the copy and assign constructors.
-+  DynIOBuffer(const DynIOBuffer&) = delete;
-+  DynIOBuffer& operator=(const DynIOBuffer&) = delete;
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_base__image_decoder__history_retain_length(
--    const wuffs_base__image_decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
-+  static uint64_t round_up(uint64_t min_incl, uint64_t max_incl);
-+};
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
--      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
--          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->history_retain_length)(self);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+// --------
- 
--  return 0;
--}
-+class Input {
-+ public:
-+  virtual ~Input();
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_base__image_decoder__num_animation_loops(
--    const wuffs_base__image_decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
-+  virtual IOBuffer* BringsItsOwnIOBuffer();
-+  virtual std::string CopyIn(IOBuffer* dst) = 0;
-+};
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
--      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
--          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->num_animation_loops)(self);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+// --------
- 
--  return 0;
--}
-+// FileInput is an Input that reads from a file source.
-+//
-+// It does not take responsibility for closing the file when done.
-+class FileInput : public Input {
-+ public:
-+  FileInput(FILE* f);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_base__image_decoder__num_decoded_frame_configs(
--    const wuffs_base__image_decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
-+  virtual std::string CopyIn(IOBuffer* dst);
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
--      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
--          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->num_decoded_frame_configs)(self);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+ private:
-+  FILE* m_f;
- 
--  return 0;
--}
-+  // Delete the copy and assign constructors.
-+  FileInput(const FileInput&) = delete;
-+  FileInput& operator=(const FileInput&) = delete;
-+};
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_base__image_decoder__num_decoded_frames(
--    const wuffs_base__image_decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
-+// --------
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
--      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
--          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->num_decoded_frames)(self);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+// MemoryInput is an Input that reads from an in-memory source.
-+//
-+// It does not take responsibility for freeing the memory when done.
-+class MemoryInput : public Input {
-+ public:
-+  MemoryInput(const char* ptr, size_t len);
-+  MemoryInput(const uint8_t* ptr, size_t len);
- 
--  return 0;
--}
-+  virtual IOBuffer* BringsItsOwnIOBuffer();
-+  virtual std::string CopyIn(IOBuffer* dst);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_base__image_decoder__restart_frame(
--    wuffs_base__image_decoder* self,
--    uint64_t a_index,
--    uint64_t a_io_position) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--            ? wuffs_base__error__disabled_by_previous_error
--            : wuffs_base__error__initialize_not_called);
--  }
-+ private:
-+  IOBuffer m_io;
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
--      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
--          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->restart_frame)(self, a_index, a_io_position);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+  // Delete the copy and assign constructors.
-+  MemoryInput(const MemoryInput&) = delete;
-+  MemoryInput& operator=(const MemoryInput&) = delete;
-+};
- 
--  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
--}
-+// --------
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_base__image_decoder__set_quirk(
--    wuffs_base__image_decoder* self,
--    uint32_t a_key,
--    uint64_t a_value) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--            ? wuffs_base__error__disabled_by_previous_error
--            : wuffs_base__error__initialize_not_called);
--  }
-+}  // namespace sync_io
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
--      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
--          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->set_quirk)(self, a_key, a_value);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+}  // namespace wuffs_aux
- 
--  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
--}
-+// ---------------- Auxiliary - CBOR
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_base__image_decoder__set_report_metadata(
--    wuffs_base__image_decoder* self,
--    uint32_t a_fourcc,
--    bool a_report) {
--  if (!self) {
--    return wuffs_base__make_empty_struct();
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_empty_struct();
--  }
-+namespace wuffs_aux {
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
--      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
--          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->set_report_metadata)(self, a_fourcc, a_report);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+struct DecodeCborResult {
-+  DecodeCborResult(std::string&& error_message0, uint64_t cursor_position0);
- 
--  return wuffs_base__make_empty_struct();
--}
-+  std::string error_message;
-+  uint64_t cursor_position;
-+};
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_base__image_decoder__tell_me_more(
--    wuffs_base__image_decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__more_information* a_minfo,
--    wuffs_base__io_buffer* a_src) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--            ? wuffs_base__error__disabled_by_previous_error
--            : wuffs_base__error__initialize_not_called);
--  }
-+class DecodeCborCallbacks {
-+ public:
-+  virtual ~DecodeCborCallbacks();
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
--      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
--          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->tell_me_more)(self, a_dst, a_minfo, a_src);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+  // AppendXxx are called for leaf nodes: literals, numbers, strings, etc.
- 
--  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
--}
-+  virtual std::string AppendNull() = 0;
-+  virtual std::string AppendUndefined() = 0;
-+  virtual std::string AppendBool(bool val) = 0;
-+  virtual std::string AppendF64(double val) = 0;
-+  virtual std::string AppendI64(int64_t val) = 0;
-+  virtual std::string AppendU64(uint64_t val) = 0;
-+  virtual std::string AppendByteString(std::string&& val) = 0;
-+  virtual std::string AppendTextString(std::string&& val) = 0;
-+  virtual std::string AppendMinus1MinusX(uint64_t val) = 0;
-+  virtual std::string AppendCborSimpleValue(uint8_t val) = 0;
-+  virtual std::string AppendCborTag(uint64_t val) = 0;
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_base__image_decoder__workbuf_len(
--    const wuffs_base__image_decoder* self) {
--  if (!self) {
--    return wuffs_base__utility__empty_range_ii_u64();
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_range_ii_u64();
--  }
-+  // Push and Pop are called for container nodes: CBOR arrays (lists) and CBOR
-+  // maps (dictionaries).
-+  //
-+  // The flags bits combine exactly one of:
-+  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_NONE
-+  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_LIST
-+  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_DICT
-+  // and exactly one of:
-+  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE
-+  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST
-+  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
--      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
--          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->workbuf_len)(self);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+  virtual std::string Push(uint32_t flags) = 0;
-+  virtual std::string Pop(uint32_t flags) = 0;
- 
--  return wuffs_base__utility__empty_range_ii_u64();
--}
-+  // Done is always the last Callback method called by DecodeCbor, whether or
-+  // not parsing the input as CBOR encountered an error. Even when successful,
-+  // trailing data may remain in input and buffer.
-+  //
-+  // Do not keep a reference to buffer or buffer.data.ptr after Done returns,
-+  // as DecodeCbor may then de-allocate the backing array.
-+  //
-+  // The default Done implementation is a no-op.
-+  virtual void  //
-+  Done(DecodeCborResult& result, sync_io::Input& input, IOBuffer& buffer);
-+};
- 
--// --------
-+// The FooArgBar types add structure to Foo's optional arguments. They wrap
-+// inner representations for several reasons:
-+//  - It provides a home for the DefaultValue static method, for Foo callers
-+//    that want to override some but not all optional arguments.
-+//  - It provides the "Bar" name at Foo call sites, which can help self-
-+//    document Foo calls with many arguemnts.
-+//  - It provides some type safety against accidentally transposing or omitting
-+//    adjacent fundamentally-numeric-typed optional arguments.
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_base__io_transformer__get_quirk(
--    const wuffs_base__io_transformer* self,
--    uint32_t a_key) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
-+// DecodeCborArgQuirks wraps an optional argument to DecodeCbor.
-+struct DecodeCborArgQuirks {
-+  explicit DecodeCborArgQuirks(const QuirkKeyValuePair* ptr0,
-+                               const size_t len0);
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
--      const wuffs_base__io_transformer__func_ptrs* func_ptrs =
--          (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->get_quirk)(self, a_key);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+  // DefaultValue returns an empty slice.
-+  static DecodeCborArgQuirks DefaultValue();
- 
--  return 0;
--}
-+  const QuirkKeyValuePair* ptr;
-+  const size_t len;
-+};
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_base__io_transformer__history_retain_length(
--    const wuffs_base__io_transformer* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
-+// DecodeCbor calls callbacks based on the CBOR-formatted data in input.
-+//
-+// On success, the returned error_message is empty and cursor_position counts
-+// the number of bytes consumed. On failure, error_message is non-empty and
-+// cursor_position is the location of the error. That error may be a content
-+// error (invalid CBOR) or an input error (e.g. network failure).
-+DecodeCborResult  //
-+DecodeCbor(DecodeCborCallbacks& callbacks,
-+           sync_io::Input& input,
-+           DecodeCborArgQuirks quirks = DecodeCborArgQuirks::DefaultValue());
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
--      const wuffs_base__io_transformer__func_ptrs* func_ptrs =
--          (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->history_retain_length)(self);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+}  // namespace wuffs_aux
- 
--  return 0;
--}
-+// ---------------- Auxiliary - Image
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_base__io_transformer__set_quirk(
--    wuffs_base__io_transformer* self,
--    uint32_t a_key,
--    uint64_t a_value) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--            ? wuffs_base__error__disabled_by_previous_error
--            : wuffs_base__error__initialize_not_called);
--  }
-+namespace wuffs_aux {
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
--      const wuffs_base__io_transformer__func_ptrs* func_ptrs =
--          (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->set_quirk)(self, a_key, a_value);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+struct DecodeImageResult {
-+  DecodeImageResult(MemOwner&& pixbuf_mem_owner0,
-+                    wuffs_base__pixel_buffer pixbuf0,
-+                    std::string&& error_message0);
-+  DecodeImageResult(std::string&& error_message0);
- 
--  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
--}
-+  MemOwner pixbuf_mem_owner;
-+  wuffs_base__pixel_buffer pixbuf;
-+  std::string error_message;
-+};
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_base__io_transformer__transform_io(
--    wuffs_base__io_transformer* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__slice_u8 a_workbuf) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--            ? wuffs_base__error__disabled_by_previous_error
--            : wuffs_base__error__initialize_not_called);
--  }
-+// DecodeImageCallbacks are the callbacks given to DecodeImage. They are always
-+// called in this order:
-+//  1. SelectDecoder
-+//  2. HandleMetadata
-+//  3. SelectPixfmt
-+//  4. AllocPixbuf
-+//  5. AllocWorkbuf
-+//  6. Done
-+//
-+// It may return early - the third callback might not be invoked if the second
-+// one fails - but the final callback (Done) is always invoked.
-+class DecodeImageCallbacks {
-+ public:
-+  // AllocPixbufResult holds a memory allocation (the result of malloc or new,
-+  // a statically allocated pointer, etc), or an error message. The memory is
-+  // de-allocated when mem_owner goes out of scope and is destroyed.
-+  struct AllocPixbufResult {
-+    AllocPixbufResult(MemOwner&& mem_owner0, wuffs_base__pixel_buffer pixbuf0);
-+    AllocPixbufResult(std::string&& error_message0);
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
--      const wuffs_base__io_transformer__func_ptrs* func_ptrs =
--          (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->transform_io)(self, a_dst, a_src, a_workbuf);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+    MemOwner mem_owner;
-+    wuffs_base__pixel_buffer pixbuf;
-+    std::string error_message;
-+  };
- 
--  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
--}
-+  // AllocWorkbufResult holds a memory allocation (the result of malloc or new,
-+  // a statically allocated pointer, etc), or an error message. The memory is
-+  // de-allocated when mem_owner goes out of scope and is destroyed.
-+  struct AllocWorkbufResult {
-+    AllocWorkbufResult(MemOwner&& mem_owner0, wuffs_base__slice_u8 workbuf0);
-+    AllocWorkbufResult(std::string&& error_message0);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_base__io_transformer__workbuf_len(
--    const wuffs_base__io_transformer* self) {
--  if (!self) {
--    return wuffs_base__utility__empty_range_ii_u64();
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_range_ii_u64();
--  }
-+    MemOwner mem_owner;
-+    wuffs_base__slice_u8 workbuf;
-+    std::string error_message;
-+  };
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
--      const wuffs_base__io_transformer__func_ptrs* func_ptrs =
--          (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->workbuf_len)(self);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+  virtual ~DecodeImageCallbacks();
- 
--  return wuffs_base__utility__empty_range_ii_u64();
--}
-+  // SelectDecoder returns the image decoder for the input data's file format.
-+  // Returning a nullptr means failure (DecodeImage_UnsupportedImageFormat).
-+  //
-+  // Common formats will have a FourCC value in the range [1 ..= 0x7FFF_FFFF],
-+  // such as WUFFS_BASE__FOURCC__JPEG. A zero FourCC value means that Wuffs'
-+  // standard library did not recognize the image format but if SelectDecoder
-+  // was overridden, it may examine the input data's starting bytes and still
-+  // provide its own image decoder, e.g. for an exotic image file format that's
-+  // not in Wuffs' standard library. The prefix_etc fields have the same
-+  // meaning as wuffs_base__magic_number_guess_fourcc arguments. SelectDecoder
-+  // implementations should not modify prefix_data's contents.
-+  //
-+  // SelectDecoder might be called more than once, since some image file
-+  // formats can wrap others. For example, a nominal BMP file can actually
-+  // contain a JPEG or a PNG.
-+  //
-+  // The default SelectDecoder accepts the FOURCC codes listed below. For
-+  // modular builds (i.e. when #define'ing WUFFS_CONFIG__MODULES), acceptance
-+  // of the ETC file format is optional (for each value of ETC) and depends on
-+  // the corresponding module to be enabled at compile time (i.e. #define'ing
-+  // WUFFS_CONFIG__MODULE__ETC).
-+  //  - WUFFS_BASE__FOURCC__BMP
-+  //  - WUFFS_BASE__FOURCC__GIF
-+  //  - WUFFS_BASE__FOURCC__JPEG
-+  //  - WUFFS_BASE__FOURCC__NIE
-+  //  - WUFFS_BASE__FOURCC__NPBM
-+  //  - WUFFS_BASE__FOURCC__PNG
-+  //  - WUFFS_BASE__FOURCC__QOI
-+  //  - WUFFS_BASE__FOURCC__TGA
-+  //  - WUFFS_BASE__FOURCC__WBMP
-+  //  - WUFFS_BASE__FOURCC__WEBP
-+  virtual wuffs_base__image_decoder::unique_ptr  //
-+  SelectDecoder(uint32_t fourcc,
-+                wuffs_base__slice_u8 prefix_data,
-+                bool prefix_closed);
- 
--// --------
-+  // HandleMetadata acknowledges image metadata. minfo.flavor will be one of:
-+  //  - WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_PASSTHROUGH
-+  //  - WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_PARSED
-+  // If it is ETC__METADATA_RAW_ETC then raw contains the metadata bytes. Those
-+  // bytes should not be retained beyond the the HandleMetadata call.
-+  //
-+  // minfo.metadata__fourcc() will typically match one of the
-+  // DecodeImageArgFlags bits. For example, if (REPORT_METADATA_CHRM |
-+  // REPORT_METADATA_GAMA) was passed to DecodeImage then the metadata FourCC
-+  // will be either WUFFS_BASE__FOURCC__CHRM or WUFFS_BASE__FOURCC__GAMA.
-+  //
-+  // It returns an error message, or an empty string on success.
-+  virtual std::string  //
-+  HandleMetadata(const wuffs_base__more_information& minfo,
-+                 wuffs_base__slice_u8 raw);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_base__token_decoder__decode_tokens(
--    wuffs_base__token_decoder* self,
--    wuffs_base__token_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__slice_u8 a_workbuf) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--            ? wuffs_base__error__disabled_by_previous_error
--            : wuffs_base__error__initialize_not_called);
--  }
-+  // SelectPixfmt returns the destination pixel format for AllocPixbuf. It
-+  // should return wuffs_base__make_pixel_format(etc) called with one of:
-+  //  - WUFFS_BASE__PIXEL_FORMAT__BGR_565
-+  //  - WUFFS_BASE__PIXEL_FORMAT__BGR
-+  //  - WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL
-+  //  - WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE
-+  //  - WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL
-+  //  - WUFFS_BASE__PIXEL_FORMAT__RGB
-+  //  - WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL
-+  //  - WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL
-+  // or return image_config.pixcfg.pixel_format(). The latter means to use the
-+  // image file's natural pixel format. For example, GIF images' natural pixel
-+  // format is an indexed one.
-+  //
-+  // Returning otherwise means failure (DecodeImage_UnsupportedPixelFormat).
-+  //
-+  // The default SelectPixfmt implementation returns
-+  // wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL) which
-+  // is 4 bytes per pixel (8 bits per channel × 4 channels).
-+  virtual wuffs_base__pixel_format  //
-+  SelectPixfmt(const wuffs_base__image_config& image_config);
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__token_decoder__vtable_name) {
--      const wuffs_base__token_decoder__func_ptrs* func_ptrs =
--          (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->decode_tokens)(self, a_dst, a_src, a_workbuf);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+  // AllocPixbuf allocates the pixel buffer.
-+  //
-+  // allow_uninitialized_memory will be true if a valid background_color was
-+  // passed to DecodeImage, since the pixel buffer's contents will be
-+  // overwritten with that color after AllocPixbuf returns.
-+  //
-+  // The default AllocPixbuf implementation allocates either uninitialized or
-+  // zeroed memory. Zeroed memory typically corresponds to filling with opaque
-+  // black or transparent black, depending on the pixel format.
-+  virtual AllocPixbufResult  //
-+  AllocPixbuf(const wuffs_base__image_config& image_config,
-+              bool allow_uninitialized_memory);
- 
--  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
--}
-+  // AllocWorkbuf allocates the work buffer. The allocated buffer's length
-+  // should be at least len_range.min_incl, but larger allocations (up to
-+  // len_range.max_incl) may have better performance (by using more memory).
-+  //
-+  // The default AllocWorkbuf implementation allocates len_range.max_incl bytes
-+  // of either uninitialized or zeroed memory.
-+  virtual AllocWorkbufResult  //
-+  AllocWorkbuf(wuffs_base__range_ii_u64 len_range,
-+               bool allow_uninitialized_memory);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_base__token_decoder__get_quirk(
--    const wuffs_base__token_decoder* self,
--    uint32_t a_key) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
-+  // Done is always the last Callback method called by DecodeImage, whether or
-+  // not parsing the input encountered an error. Even when successful, trailing
-+  // data may remain in input and buffer.
-+  //
-+  // The image_decoder is the one returned by SelectDecoder (if SelectDecoder
-+  // was successful), or a no-op unique_ptr otherwise. Like any unique_ptr,
-+  // ownership moves to the Done implementation.
-+  //
-+  // Do not keep a reference to buffer or buffer.data.ptr after Done returns,
-+  // as DecodeImage may then de-allocate the backing array.
-+  //
-+  // The default Done implementation is a no-op, other than running the
-+  // image_decoder unique_ptr destructor.
-+  virtual void  //
-+  Done(DecodeImageResult& result,
-+       sync_io::Input& input,
-+       IOBuffer& buffer,
-+       wuffs_base__image_decoder::unique_ptr image_decoder);
-+};
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__token_decoder__vtable_name) {
--      const wuffs_base__token_decoder__func_ptrs* func_ptrs =
--          (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->get_quirk)(self, a_key);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+extern const char DecodeImage_BufferIsTooShort[];
-+extern const char DecodeImage_MaxInclDimensionExceeded[];
-+extern const char DecodeImage_MaxInclMetadataLengthExceeded[];
-+extern const char DecodeImage_OutOfMemory[];
-+extern const char DecodeImage_UnexpectedEndOfFile[];
-+extern const char DecodeImage_UnsupportedImageFormat[];
-+extern const char DecodeImage_UnsupportedMetadata[];
-+extern const char DecodeImage_UnsupportedPixelBlend[];
-+extern const char DecodeImage_UnsupportedPixelConfiguration[];
-+extern const char DecodeImage_UnsupportedPixelFormat[];
- 
--  return 0;
--}
-+// The FooArgBar types add structure to Foo's optional arguments. They wrap
-+// inner representations for several reasons:
-+//  - It provides a home for the DefaultValue static method, for Foo callers
-+//    that want to override some but not all optional arguments.
-+//  - It provides the "Bar" name at Foo call sites, which can help self-
-+//    document Foo calls with many arguemnts.
-+//  - It provides some type safety against accidentally transposing or omitting
-+//    adjacent fundamentally-numeric-typed optional arguments.
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_base__token_decoder__history_retain_length(
--    const wuffs_base__token_decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
-+// DecodeImageArgQuirks wraps an optional argument to DecodeImage.
-+struct DecodeImageArgQuirks {
-+  explicit DecodeImageArgQuirks(const QuirkKeyValuePair* ptr0,
-+                                const size_t len0);
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__token_decoder__vtable_name) {
--      const wuffs_base__token_decoder__func_ptrs* func_ptrs =
--          (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->history_retain_length)(self);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+  // DefaultValue returns an empty slice.
-+  static DecodeImageArgQuirks DefaultValue();
- 
--  return 0;
--}
-+  const QuirkKeyValuePair* ptr;
-+  const size_t len;
-+};
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_base__token_decoder__set_quirk(
--    wuffs_base__token_decoder* self,
--    uint32_t a_key,
--    uint64_t a_value) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--            ? wuffs_base__error__disabled_by_previous_error
--            : wuffs_base__error__initialize_not_called);
--  }
-+// DecodeImageArgFlags wraps an optional argument to DecodeImage.
-+struct DecodeImageArgFlags {
-+  explicit DecodeImageArgFlags(uint64_t repr0);
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__token_decoder__vtable_name) {
--      const wuffs_base__token_decoder__func_ptrs* func_ptrs =
--          (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->set_quirk)(self, a_key, a_value);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+  // DefaultValue returns 0.
-+  static DecodeImageArgFlags DefaultValue();
- 
--  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
--}
-+  // TODO: support all of the REPORT_METADATA_ETC flags, not just CHRM, EXIF,
-+  // GAMA, ICCP, KVP, SRGB and XMP.
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_base__token_decoder__workbuf_len(
--    const wuffs_base__token_decoder* self) {
--  if (!self) {
--    return wuffs_base__utility__empty_range_ii_u64();
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_range_ii_u64();
--  }
-+  // Background Color.
-+  static constexpr uint64_t REPORT_METADATA_BGCL = 0x0001;
-+  // Primary Chromaticities and White Point.
-+  static constexpr uint64_t REPORT_METADATA_CHRM = 0x0002;
-+  // Exchangeable Image File Format.
-+  static constexpr uint64_t REPORT_METADATA_EXIF = 0x0004;
-+  // Gamma Correction.
-+  static constexpr uint64_t REPORT_METADATA_GAMA = 0x0008;
-+  // International Color Consortium Profile.
-+  static constexpr uint64_t REPORT_METADATA_ICCP = 0x0010;
-+  // Key-Value Pair.
-+  //
-+  // For PNG files, this includes iTXt, tEXt and zTXt chunks. In the
-+  // HandleMetadata callback, the raw argument contains UTF-8 strings.
-+  static constexpr uint64_t REPORT_METADATA_KVP = 0x0020;
-+  // Modification Time.
-+  static constexpr uint64_t REPORT_METADATA_MTIM = 0x0040;
-+  // Offset (2-Dimensional).
-+  static constexpr uint64_t REPORT_METADATA_OFS2 = 0x0080;
-+  // Physical Dimensions.
-+  static constexpr uint64_t REPORT_METADATA_PHYD = 0x0100;
-+  // Standard Red Green Blue (Rendering Intent).
-+  static constexpr uint64_t REPORT_METADATA_SRGB = 0x0200;
-+  // Extensible Metadata Platform.
-+  static constexpr uint64_t REPORT_METADATA_XMP = 0x0400;
- 
--  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
--  int i;
--  for (i = 0; i < 63; i++) {
--    if (v->vtable_name == wuffs_base__token_decoder__vtable_name) {
--      const wuffs_base__token_decoder__func_ptrs* func_ptrs =
--          (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers);
--      return (*func_ptrs->workbuf_len)(self);
--    } else if (v->vtable_name == NULL) {
--      break;
--    }
--    v++;
--  }
-+  uint64_t repr;
-+};
- 
--  return wuffs_base__utility__empty_range_ii_u64();
--}
-+// DecodeImageArgPixelBlend wraps an optional argument to DecodeImage.
-+struct DecodeImageArgPixelBlend {
-+  explicit DecodeImageArgPixelBlend(wuffs_base__pixel_blend repr0);
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) ||
--        // defined(WUFFS_CONFIG__MODULE__BASE) ||
--        // defined(WUFFS_CONFIG__MODULE__BASE__INTERFACES)
-+  // DefaultValue returns WUFFS_BASE__PIXEL_BLEND__SRC.
-+  static DecodeImageArgPixelBlend DefaultValue();
- 
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
--    defined(WUFFS_CONFIG__MODULE__BASE__FLOATCONV)
-+  wuffs_base__pixel_blend repr;
-+};
- 
--// ---------------- IEEE 754 Floating Point
-+// DecodeImageArgBackgroundColor wraps an optional argument to DecodeImage.
-+struct DecodeImageArgBackgroundColor {
-+  explicit DecodeImageArgBackgroundColor(
-+      wuffs_base__color_u32_argb_premul repr0);
- 
--// The etc__hpd_left_shift and etc__powers_of_5 tables were printed by
--// script/print-hpd-left-shift.go. That script has an optional -comments flag,
--// whose output is not copied here, which prints further detail.
--//
--// These tables are used in
--// wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits.
-+  // DefaultValue returns 1, an invalid wuffs_base__color_u32_argb_premul.
-+  static DecodeImageArgBackgroundColor DefaultValue();
-+
-+  wuffs_base__color_u32_argb_premul repr;
-+};
-+
-+// DecodeImageArgMaxInclDimension wraps an optional argument to DecodeImage.
-+struct DecodeImageArgMaxInclDimension {
-+  explicit DecodeImageArgMaxInclDimension(uint32_t repr0);
-+
-+  // DefaultValue returns 1048575 = 0x000F_FFFF, more than 1 million pixels.
-+  static DecodeImageArgMaxInclDimension DefaultValue();
-+
-+  uint32_t repr;
-+};
-+
-+// DecodeImageArgMaxInclMetadataLength wraps an optional argument to
-+// DecodeImage.
-+struct DecodeImageArgMaxInclMetadataLength {
-+  explicit DecodeImageArgMaxInclMetadataLength(uint64_t repr0);
-+
-+  // DefaultValue returns 16777215 = 0x00FF_FFFF, one less than 16 MiB.
-+  static DecodeImageArgMaxInclMetadataLength DefaultValue();
-+
-+  uint64_t repr;
-+};
- 
--// wuffs_base__private_implementation__hpd_left_shift[i] encodes the number of
--// new digits created after multiplying a positive integer by (1 << i): the
--// additional length in the decimal representation. For example, shifting "234"
--// by 3 (equivalent to multiplying by 8) will produce "1872". Going from a
--// 3-length string to a 4-length string means that 1 new digit was added (and
--// existing digits may have changed).
-+// DecodeImage decodes the image data in input. A variety of image file formats
-+// can be decoded, depending on what callbacks.SelectDecoder returns.
- //
--// Shifting by i can add either N or N-1 new digits, depending on whether the
--// original positive integer compares >= or < to the i'th power of 5 (as 10
--// equals 2 * 5). Comparison is lexicographic, not numerical.
-+// For animated formats, only the first frame is returned, since the API is
-+// simpler for synchronous I/O and having DecodeImage only return when
-+// completely done, but rendering animation often involves handling other
-+// events in between animation frames. To decode multiple frames of animated
-+// images, or for asynchronous I/O (e.g. when decoding an image streamed over
-+// the network), use Wuffs' lower level C API instead of its higher level,
-+// simplified C++ API (the wuffs_aux API).
- //
--// For example, shifting by 4 (i.e. multiplying by 16) can add 1 or 2 new
--// digits, depending on a lexicographic comparison to (5 ** 4), i.e. "625":
--//  - ("1"      << 4) is "16",       which adds 1 new digit.
--//  - ("5678"   << 4) is "90848",    which adds 1 new digit.
--//  - ("624"    << 4) is "9984",     which adds 1 new digit.
--//  - ("62498"  << 4) is "999968",   which adds 1 new digit.
--//  - ("625"    << 4) is "10000",    which adds 2 new digits.
--//  - ("625001" << 4) is "10000016", which adds 2 new digits.
--//  - ("7008"   << 4) is "112128",   which adds 2 new digits.
--//  - ("99"     << 4) is "1584",     which adds 2 new digits.
-+// The DecodeImageResult's fields depend on whether decoding succeeded:
-+//  - On total success, the error_message is empty and pixbuf.pixcfg.is_valid()
-+//    is true.
-+//  - On partial success (e.g. the input file was truncated but we are still
-+//    able to decode some of the pixels), error_message is non-empty but
-+//    pixbuf.pixcfg.is_valid() is still true. It is up to the caller whether to
-+//    accept or reject partial success.
-+//  - On failure, the error_message is non_empty and pixbuf.pixcfg.is_valid()
-+//    is false.
- //
--// Thus, when i is 4, N is 2 and (5 ** i) is "625". This etc__hpd_left_shift
--// array encodes this as:
--//  - etc__hpd_left_shift[4] is 0x1006 = (2 << 11) | 0x0006.
--//  - etc__hpd_left_shift[5] is 0x1009 = (? << 11) | 0x0009.
--// where the ? isn't relevant for i == 4.
-+// The callbacks allocate the pixel buffer memory and work buffer memory. On
-+// success, pixel buffer memory ownership is passed to the DecodeImage caller
-+// as the returned pixbuf_mem_owner. Regardless of success or failure, the work
-+// buffer memory is deleted.
- //
--// The high 5 bits of etc__hpd_left_shift[i] is N, the higher of the two
--// possible number of new digits. The low 11 bits are an offset into the
--// etc__powers_of_5 array (of length 0x051C, so offsets fit in 11 bits). When i
--// is 4, its offset and the next one is 6 and 9, and etc__powers_of_5[6 .. 9]
--// is the string "\x06\x02\x05", so the relevant power of 5 is "625".
-+// The pixel_blend (one of the constants listed below) determines how to
-+// composite the decoded image over the pixel buffer's original pixels (as
-+// returned by callbacks.AllocPixbuf):
-+//  - WUFFS_BASE__PIXEL_BLEND__SRC
-+//  - WUFFS_BASE__PIXEL_BLEND__SRC_OVER
- //
--// Thanks to Ken Thompson for the original idea.
--static const uint16_t wuffs_base__private_implementation__hpd_left_shift[65] = {
--    0x0000, 0x0800, 0x0801, 0x0803, 0x1006, 0x1009, 0x100D, 0x1812, 0x1817,
--    0x181D, 0x2024, 0x202B, 0x2033, 0x203C, 0x2846, 0x2850, 0x285B, 0x3067,
--    0x3073, 0x3080, 0x388E, 0x389C, 0x38AB, 0x38BB, 0x40CC, 0x40DD, 0x40EF,
--    0x4902, 0x4915, 0x4929, 0x513E, 0x5153, 0x5169, 0x5180, 0x5998, 0x59B0,
--    0x59C9, 0x61E3, 0x61FD, 0x6218, 0x6A34, 0x6A50, 0x6A6D, 0x6A8B, 0x72AA,
--    0x72C9, 0x72E9, 0x7B0A, 0x7B2B, 0x7B4D, 0x8370, 0x8393, 0x83B7, 0x83DC,
--    0x8C02, 0x8C28, 0x8C4F, 0x9477, 0x949F, 0x94C8, 0x9CF2, 0x051C, 0x051C,
--    0x051C, 0x051C,
--};
--
--// wuffs_base__private_implementation__powers_of_5 contains the powers of 5,
--// concatenated together: "5", "25", "125", "625", "3125", etc.
--static const uint8_t wuffs_base__private_implementation__powers_of_5[0x051C] = {
--    5, 2, 5, 1, 2, 5, 6, 2, 5, 3, 1, 2, 5, 1, 5, 6, 2, 5, 7, 8, 1, 2, 5, 3, 9,
--    0, 6, 2, 5, 1, 9, 5, 3, 1, 2, 5, 9, 7, 6, 5, 6, 2, 5, 4, 8, 8, 2, 8, 1, 2,
--    5, 2, 4, 4, 1, 4, 0, 6, 2, 5, 1, 2, 2, 0, 7, 0, 3, 1, 2, 5, 6, 1, 0, 3, 5,
--    1, 5, 6, 2, 5, 3, 0, 5, 1, 7, 5, 7, 8, 1, 2, 5, 1, 5, 2, 5, 8, 7, 8, 9, 0,
--    6, 2, 5, 7, 6, 2, 9, 3, 9, 4, 5, 3, 1, 2, 5, 3, 8, 1, 4, 6, 9, 7, 2, 6, 5,
--    6, 2, 5, 1, 9, 0, 7, 3, 4, 8, 6, 3, 2, 8, 1, 2, 5, 9, 5, 3, 6, 7, 4, 3, 1,
--    6, 4, 0, 6, 2, 5, 4, 7, 6, 8, 3, 7, 1, 5, 8, 2, 0, 3, 1, 2, 5, 2, 3, 8, 4,
--    1, 8, 5, 7, 9, 1, 0, 1, 5, 6, 2, 5, 1, 1, 9, 2, 0, 9, 2, 8, 9, 5, 5, 0, 7,
--    8, 1, 2, 5, 5, 9, 6, 0, 4, 6, 4, 4, 7, 7, 5, 3, 9, 0, 6, 2, 5, 2, 9, 8, 0,
--    2, 3, 2, 2, 3, 8, 7, 6, 9, 5, 3, 1, 2, 5, 1, 4, 9, 0, 1, 1, 6, 1, 1, 9, 3,
--    8, 4, 7, 6, 5, 6, 2, 5, 7, 4, 5, 0, 5, 8, 0, 5, 9, 6, 9, 2, 3, 8, 2, 8, 1,
--    2, 5, 3, 7, 2, 5, 2, 9, 0, 2, 9, 8, 4, 6, 1, 9, 1, 4, 0, 6, 2, 5, 1, 8, 6,
--    2, 6, 4, 5, 1, 4, 9, 2, 3, 0, 9, 5, 7, 0, 3, 1, 2, 5, 9, 3, 1, 3, 2, 2, 5,
--    7, 4, 6, 1, 5, 4, 7, 8, 5, 1, 5, 6, 2, 5, 4, 6, 5, 6, 6, 1, 2, 8, 7, 3, 0,
--    7, 7, 3, 9, 2, 5, 7, 8, 1, 2, 5, 2, 3, 2, 8, 3, 0, 6, 4, 3, 6, 5, 3, 8, 6,
--    9, 6, 2, 8, 9, 0, 6, 2, 5, 1, 1, 6, 4, 1, 5, 3, 2, 1, 8, 2, 6, 9, 3, 4, 8,
--    1, 4, 4, 5, 3, 1, 2, 5, 5, 8, 2, 0, 7, 6, 6, 0, 9, 1, 3, 4, 6, 7, 4, 0, 7,
--    2, 2, 6, 5, 6, 2, 5, 2, 9, 1, 0, 3, 8, 3, 0, 4, 5, 6, 7, 3, 3, 7, 0, 3, 6,
--    1, 3, 2, 8, 1, 2, 5, 1, 4, 5, 5, 1, 9, 1, 5, 2, 2, 8, 3, 6, 6, 8, 5, 1, 8,
--    0, 6, 6, 4, 0, 6, 2, 5, 7, 2, 7, 5, 9, 5, 7, 6, 1, 4, 1, 8, 3, 4, 2, 5, 9,
--    0, 3, 3, 2, 0, 3, 1, 2, 5, 3, 6, 3, 7, 9, 7, 8, 8, 0, 7, 0, 9, 1, 7, 1, 2,
--    9, 5, 1, 6, 6, 0, 1, 5, 6, 2, 5, 1, 8, 1, 8, 9, 8, 9, 4, 0, 3, 5, 4, 5, 8,
--    5, 6, 4, 7, 5, 8, 3, 0, 0, 7, 8, 1, 2, 5, 9, 0, 9, 4, 9, 4, 7, 0, 1, 7, 7,
--    2, 9, 2, 8, 2, 3, 7, 9, 1, 5, 0, 3, 9, 0, 6, 2, 5, 4, 5, 4, 7, 4, 7, 3, 5,
--    0, 8, 8, 6, 4, 6, 4, 1, 1, 8, 9, 5, 7, 5, 1, 9, 5, 3, 1, 2, 5, 2, 2, 7, 3,
--    7, 3, 6, 7, 5, 4, 4, 3, 2, 3, 2, 0, 5, 9, 4, 7, 8, 7, 5, 9, 7, 6, 5, 6, 2,
--    5, 1, 1, 3, 6, 8, 6, 8, 3, 7, 7, 2, 1, 6, 1, 6, 0, 2, 9, 7, 3, 9, 3, 7, 9,
--    8, 8, 2, 8, 1, 2, 5, 5, 6, 8, 4, 3, 4, 1, 8, 8, 6, 0, 8, 0, 8, 0, 1, 4, 8,
--    6, 9, 6, 8, 9, 9, 4, 1, 4, 0, 6, 2, 5, 2, 8, 4, 2, 1, 7, 0, 9, 4, 3, 0, 4,
--    0, 4, 0, 0, 7, 4, 3, 4, 8, 4, 4, 9, 7, 0, 7, 0, 3, 1, 2, 5, 1, 4, 2, 1, 0,
--    8, 5, 4, 7, 1, 5, 2, 0, 2, 0, 0, 3, 7, 1, 7, 4, 2, 2, 4, 8, 5, 3, 5, 1, 5,
--    6, 2, 5, 7, 1, 0, 5, 4, 2, 7, 3, 5, 7, 6, 0, 1, 0, 0, 1, 8, 5, 8, 7, 1, 1,
--    2, 4, 2, 6, 7, 5, 7, 8, 1, 2, 5, 3, 5, 5, 2, 7, 1, 3, 6, 7, 8, 8, 0, 0, 5,
--    0, 0, 9, 2, 9, 3, 5, 5, 6, 2, 1, 3, 3, 7, 8, 9, 0, 6, 2, 5, 1, 7, 7, 6, 3,
--    5, 6, 8, 3, 9, 4, 0, 0, 2, 5, 0, 4, 6, 4, 6, 7, 7, 8, 1, 0, 6, 6, 8, 9, 4,
--    5, 3, 1, 2, 5, 8, 8, 8, 1, 7, 8, 4, 1, 9, 7, 0, 0, 1, 2, 5, 2, 3, 2, 3, 3,
--    8, 9, 0, 5, 3, 3, 4, 4, 7, 2, 6, 5, 6, 2, 5, 4, 4, 4, 0, 8, 9, 2, 0, 9, 8,
--    5, 0, 0, 6, 2, 6, 1, 6, 1, 6, 9, 4, 5, 2, 6, 6, 7, 2, 3, 6, 3, 2, 8, 1, 2,
--    5, 2, 2, 2, 0, 4, 4, 6, 0, 4, 9, 2, 5, 0, 3, 1, 3, 0, 8, 0, 8, 4, 7, 2, 6,
--    3, 3, 3, 6, 1, 8, 1, 6, 4, 0, 6, 2, 5, 1, 1, 1, 0, 2, 2, 3, 0, 2, 4, 6, 2,
--    5, 1, 5, 6, 5, 4, 0, 4, 2, 3, 6, 3, 1, 6, 6, 8, 0, 9, 0, 8, 2, 0, 3, 1, 2,
--    5, 5, 5, 5, 1, 1, 1, 5, 1, 2, 3, 1, 2, 5, 7, 8, 2, 7, 0, 2, 1, 1, 8, 1, 5,
--    8, 3, 4, 0, 4, 5, 4, 1, 0, 1, 5, 6, 2, 5, 2, 7, 7, 5, 5, 5, 7, 5, 6, 1, 5,
--    6, 2, 8, 9, 1, 3, 5, 1, 0, 5, 9, 0, 7, 9, 1, 7, 0, 2, 2, 7, 0, 5, 0, 7, 8,
--    1, 2, 5, 1, 3, 8, 7, 7, 7, 8, 7, 8, 0, 7, 8, 1, 4, 4, 5, 6, 7, 5, 5, 2, 9,
--    5, 3, 9, 5, 8, 5, 1, 1, 3, 5, 2, 5, 3, 9, 0, 6, 2, 5, 6, 9, 3, 8, 8, 9, 3,
--    9, 0, 3, 9, 0, 7, 2, 2, 8, 3, 7, 7, 6, 4, 7, 6, 9, 7, 9, 2, 5, 5, 6, 7, 6,
--    2, 6, 9, 5, 3, 1, 2, 5, 3, 4, 6, 9, 4, 4, 6, 9, 5, 1, 9, 5, 3, 6, 1, 4, 1,
--    8, 8, 8, 2, 3, 8, 4, 8, 9, 6, 2, 7, 8, 3, 8, 1, 3, 4, 7, 6, 5, 6, 2, 5, 1,
--    7, 3, 4, 7, 2, 3, 4, 7, 5, 9, 7, 6, 8, 0, 7, 0, 9, 4, 4, 1, 1, 9, 2, 4, 4,
--    8, 1, 3, 9, 1, 9, 0, 6, 7, 3, 8, 2, 8, 1, 2, 5, 8, 6, 7, 3, 6, 1, 7, 3, 7,
--    9, 8, 8, 4, 0, 3, 5, 4, 7, 2, 0, 5, 9, 6, 2, 2, 4, 0, 6, 9, 5, 9, 5, 3, 3,
--    6, 9, 1, 4, 0, 6, 2, 5,
--};
-+// The background_color is used to fill the pixel buffer after
-+// callbacks.AllocPixbuf returns, if it is valid in the
-+// wuffs_base__color_u32_argb_premul__is_valid sense. The default value,
-+// 0x0000_0001, is not valid since its Blue channel value (0x01) is greater
-+// than its Alpha channel value (0x00). A valid background_color will typically
-+// be overwritten when pixel_blend is WUFFS_BASE__PIXEL_BLEND__SRC, but might
-+// still be visible on partial (not total) success or when pixel_blend is
-+// WUFFS_BASE__PIXEL_BLEND__SRC_OVER and the decoded image is not fully opaque.
-+//
-+// Decoding fails (with DecodeImage_MaxInclDimensionExceeded) if the image's
-+// width or height is greater than max_incl_dimension or if any opted-in (via
-+// flags bits) metadata is longer than max_incl_metadata_length.
-+DecodeImageResult  //
-+DecodeImage(DecodeImageCallbacks& callbacks,
-+            sync_io::Input& input,
-+            DecodeImageArgQuirks quirks = DecodeImageArgQuirks::DefaultValue(),
-+            DecodeImageArgFlags flags = DecodeImageArgFlags::DefaultValue(),
-+            DecodeImageArgPixelBlend pixel_blend =
-+                DecodeImageArgPixelBlend::DefaultValue(),
-+            DecodeImageArgBackgroundColor background_color =
-+                DecodeImageArgBackgroundColor::DefaultValue(),
-+            DecodeImageArgMaxInclDimension max_incl_dimension =
-+                DecodeImageArgMaxInclDimension::DefaultValue(),
-+            DecodeImageArgMaxInclMetadataLength max_incl_metadata_length =
-+                DecodeImageArgMaxInclMetadataLength::DefaultValue());
- 
--// --------
-+}  // namespace wuffs_aux
- 
--// wuffs_base__private_implementation__powers_of_10 contains truncated
--// approximations to the powers of 10, ranging from 1e-307 to 1e+288 inclusive,
--// as 596 pairs of uint64_t values (a 128-bit mantissa).
--//
--// There's also an implicit third column (implied by a linear formula involving
--// the base-10 exponent) that is the base-2 exponent, biased by a magic
--// constant. That constant (1214 or 0x04BE) equals 1023 + 191. 1023 is the bias
--// for IEEE 754 double-precision floating point. 191 is ((3 * 64) - 1) and
--// wuffs_base__private_implementation__parse_number_f64_eisel_lemire works with
--// multiples-of-64-bit mantissas.
--//
--// For example, the third row holds the approximation to 1e-305:
--//   0xE0B62E29_29ABA83C_331ACDAB_FE94DE87 * (2 ** (0x0049 - 0x04BE))
--//
--// Similarly, 1e+4 is approximated by:
--//   0x9C400000_00000000_00000000_00000000 * (2 ** (0x044C - 0x04BE))
--//
--// Similarly, 1e+68 is approximated by:
--//   0xED63A231_D4C4FB27_4CA7AAA8_63EE4BDD * (2 ** (0x0520 - 0x04BE))
--//
--// This table was generated by by script/print-mpb-powers-of-10.go
--static const uint64_t wuffs_base__private_implementation__powers_of_10[596][2] =
--    {
--        {0xA5D3B6D479F8E056, 0x8FD0C16206306BAB},  // 1e-307
--        {0x8F48A4899877186C, 0xB3C4F1BA87BC8696},  // 1e-306
--        {0x331ACDABFE94DE87, 0xE0B62E2929ABA83C},  // 1e-305
--        {0x9FF0C08B7F1D0B14, 0x8C71DCD9BA0B4925},  // 1e-304
--        {0x07ECF0AE5EE44DD9, 0xAF8E5410288E1B6F},  // 1e-303
--        {0xC9E82CD9F69D6150, 0xDB71E91432B1A24A},  // 1e-302
--        {0xBE311C083A225CD2, 0x892731AC9FAF056E},  // 1e-301
--        {0x6DBD630A48AAF406, 0xAB70FE17C79AC6CA},  // 1e-300
--        {0x092CBBCCDAD5B108, 0xD64D3D9DB981787D},  // 1e-299
--        {0x25BBF56008C58EA5, 0x85F0468293F0EB4E},  // 1e-298
--        {0xAF2AF2B80AF6F24E, 0xA76C582338ED2621},  // 1e-297
--        {0x1AF5AF660DB4AEE1, 0xD1476E2C07286FAA},  // 1e-296
--        {0x50D98D9FC890ED4D, 0x82CCA4DB847945CA},  // 1e-295
--        {0xE50FF107BAB528A0, 0xA37FCE126597973C},  // 1e-294
--        {0x1E53ED49A96272C8, 0xCC5FC196FEFD7D0C},  // 1e-293
--        {0x25E8E89C13BB0F7A, 0xFF77B1FCBEBCDC4F},  // 1e-292
--        {0x77B191618C54E9AC, 0x9FAACF3DF73609B1},  // 1e-291
--        {0xD59DF5B9EF6A2417, 0xC795830D75038C1D},  // 1e-290
--        {0x4B0573286B44AD1D, 0xF97AE3D0D2446F25},  // 1e-289
--        {0x4EE367F9430AEC32, 0x9BECCE62836AC577},  // 1e-288
--        {0x229C41F793CDA73F, 0xC2E801FB244576D5},  // 1e-287
--        {0x6B43527578C1110F, 0xF3A20279ED56D48A},  // 1e-286
--        {0x830A13896B78AAA9, 0x9845418C345644D6},  // 1e-285
--        {0x23CC986BC656D553, 0xBE5691EF416BD60C},  // 1e-284
--        {0x2CBFBE86B7EC8AA8, 0xEDEC366B11C6CB8F},  // 1e-283
--        {0x7BF7D71432F3D6A9, 0x94B3A202EB1C3F39},  // 1e-282
--        {0xDAF5CCD93FB0CC53, 0xB9E08A83A5E34F07},  // 1e-281
--        {0xD1B3400F8F9CFF68, 0xE858AD248F5C22C9},  // 1e-280
--        {0x23100809B9C21FA1, 0x91376C36D99995BE},  // 1e-279
--        {0xABD40A0C2832A78A, 0xB58547448FFFFB2D},  // 1e-278
--        {0x16C90C8F323F516C, 0xE2E69915B3FFF9F9},  // 1e-277
--        {0xAE3DA7D97F6792E3, 0x8DD01FAD907FFC3B},  // 1e-276
--        {0x99CD11CFDF41779C, 0xB1442798F49FFB4A},  // 1e-275
--        {0x40405643D711D583, 0xDD95317F31C7FA1D},  // 1e-274
--        {0x482835EA666B2572, 0x8A7D3EEF7F1CFC52},  // 1e-273
--        {0xDA3243650005EECF, 0xAD1C8EAB5EE43B66},  // 1e-272
--        {0x90BED43E40076A82, 0xD863B256369D4A40},  // 1e-271
--        {0x5A7744A6E804A291, 0x873E4F75E2224E68},  // 1e-270
--        {0x711515D0A205CB36, 0xA90DE3535AAAE202},  // 1e-269
--        {0x0D5A5B44CA873E03, 0xD3515C2831559A83},  // 1e-268
--        {0xE858790AFE9486C2, 0x8412D9991ED58091},  // 1e-267
--        {0x626E974DBE39A872, 0xA5178FFF668AE0B6},  // 1e-266
--        {0xFB0A3D212DC8128F, 0xCE5D73FF402D98E3},  // 1e-265
--        {0x7CE66634BC9D0B99, 0x80FA687F881C7F8E},  // 1e-264
--        {0x1C1FFFC1EBC44E80, 0xA139029F6A239F72},  // 1e-263
--        {0xA327FFB266B56220, 0xC987434744AC874E},  // 1e-262
--        {0x4BF1FF9F0062BAA8, 0xFBE9141915D7A922},  // 1e-261
--        {0x6F773FC3603DB4A9, 0x9D71AC8FADA6C9B5},  // 1e-260
--        {0xCB550FB4384D21D3, 0xC4CE17B399107C22},  // 1e-259
--        {0x7E2A53A146606A48, 0xF6019DA07F549B2B},  // 1e-258
--        {0x2EDA7444CBFC426D, 0x99C102844F94E0FB},  // 1e-257
--        {0xFA911155FEFB5308, 0xC0314325637A1939},  // 1e-256
--        {0x793555AB7EBA27CA, 0xF03D93EEBC589F88},  // 1e-255
--        {0x4BC1558B2F3458DE, 0x96267C7535B763B5},  // 1e-254
--        {0x9EB1AAEDFB016F16, 0xBBB01B9283253CA2},  // 1e-253
--        {0x465E15A979C1CADC, 0xEA9C227723EE8BCB},  // 1e-252
--        {0x0BFACD89EC191EC9, 0x92A1958A7675175F},  // 1e-251
--        {0xCEF980EC671F667B, 0xB749FAED14125D36},  // 1e-250
--        {0x82B7E12780E7401A, 0xE51C79A85916F484},  // 1e-249
--        {0xD1B2ECB8B0908810, 0x8F31CC0937AE58D2},  // 1e-248
--        {0x861FA7E6DCB4AA15, 0xB2FE3F0B8599EF07},  // 1e-247
--        {0x67A791E093E1D49A, 0xDFBDCECE67006AC9},  // 1e-246
--        {0xE0C8BB2C5C6D24E0, 0x8BD6A141006042BD},  // 1e-245
--        {0x58FAE9F773886E18, 0xAECC49914078536D},  // 1e-244
--        {0xAF39A475506A899E, 0xDA7F5BF590966848},  // 1e-243
--        {0x6D8406C952429603, 0x888F99797A5E012D},  // 1e-242
--        {0xC8E5087BA6D33B83, 0xAAB37FD7D8F58178},  // 1e-241
--        {0xFB1E4A9A90880A64, 0xD5605FCDCF32E1D6},  // 1e-240
--        {0x5CF2EEA09A55067F, 0x855C3BE0A17FCD26},  // 1e-239
--        {0xF42FAA48C0EA481E, 0xA6B34AD8C9DFC06F},  // 1e-238
--        {0xF13B94DAF124DA26, 0xD0601D8EFC57B08B},  // 1e-237
--        {0x76C53D08D6B70858, 0x823C12795DB6CE57},  // 1e-236
--        {0x54768C4B0C64CA6E, 0xA2CB1717B52481ED},  // 1e-235
--        {0xA9942F5DCF7DFD09, 0xCB7DDCDDA26DA268},  // 1e-234
--        {0xD3F93B35435D7C4C, 0xFE5D54150B090B02},  // 1e-233
--        {0xC47BC5014A1A6DAF, 0x9EFA548D26E5A6E1},  // 1e-232
--        {0x359AB6419CA1091B, 0xC6B8E9B0709F109A},  // 1e-231
--        {0xC30163D203C94B62, 0xF867241C8CC6D4C0},  // 1e-230
--        {0x79E0DE63425DCF1D, 0x9B407691D7FC44F8},  // 1e-229
--        {0x985915FC12F542E4, 0xC21094364DFB5636},  // 1e-228
--        {0x3E6F5B7B17B2939D, 0xF294B943E17A2BC4},  // 1e-227
--        {0xA705992CEECF9C42, 0x979CF3CA6CEC5B5A},  // 1e-226
--        {0x50C6FF782A838353, 0xBD8430BD08277231},  // 1e-225
--        {0xA4F8BF5635246428, 0xECE53CEC4A314EBD},  // 1e-224
--        {0x871B7795E136BE99, 0x940F4613AE5ED136},  // 1e-223
--        {0x28E2557B59846E3F, 0xB913179899F68584},  // 1e-222
--        {0x331AEADA2FE589CF, 0xE757DD7EC07426E5},  // 1e-221
--        {0x3FF0D2C85DEF7621, 0x9096EA6F3848984F},  // 1e-220
--        {0x0FED077A756B53A9, 0xB4BCA50B065ABE63},  // 1e-219
--        {0xD3E8495912C62894, 0xE1EBCE4DC7F16DFB},  // 1e-218
--        {0x64712DD7ABBBD95C, 0x8D3360F09CF6E4BD},  // 1e-217
--        {0xBD8D794D96AACFB3, 0xB080392CC4349DEC},  // 1e-216
--        {0xECF0D7A0FC5583A0, 0xDCA04777F541C567},  // 1e-215
--        {0xF41686C49DB57244, 0x89E42CAAF9491B60},  // 1e-214
--        {0x311C2875C522CED5, 0xAC5D37D5B79B6239},  // 1e-213
--        {0x7D633293366B828B, 0xD77485CB25823AC7},  // 1e-212
--        {0xAE5DFF9C02033197, 0x86A8D39EF77164BC},  // 1e-211
--        {0xD9F57F830283FDFC, 0xA8530886B54DBDEB},  // 1e-210
--        {0xD072DF63C324FD7B, 0xD267CAA862A12D66},  // 1e-209
--        {0x4247CB9E59F71E6D, 0x8380DEA93DA4BC60},  // 1e-208
--        {0x52D9BE85F074E608, 0xA46116538D0DEB78},  // 1e-207
--        {0x67902E276C921F8B, 0xCD795BE870516656},  // 1e-206
--        {0x00BA1CD8A3DB53B6, 0x806BD9714632DFF6},  // 1e-205
--        {0x80E8A40ECCD228A4, 0xA086CFCD97BF97F3},  // 1e-204
--        {0x6122CD128006B2CD, 0xC8A883C0FDAF7DF0},  // 1e-203
--        {0x796B805720085F81, 0xFAD2A4B13D1B5D6C},  // 1e-202
--        {0xCBE3303674053BB0, 0x9CC3A6EEC6311A63},  // 1e-201
--        {0xBEDBFC4411068A9C, 0xC3F490AA77BD60FC},  // 1e-200
--        {0xEE92FB5515482D44, 0xF4F1B4D515ACB93B},  // 1e-199
--        {0x751BDD152D4D1C4A, 0x991711052D8BF3C5},  // 1e-198
--        {0xD262D45A78A0635D, 0xBF5CD54678EEF0B6},  // 1e-197
--        {0x86FB897116C87C34, 0xEF340A98172AACE4},  // 1e-196
--        {0xD45D35E6AE3D4DA0, 0x9580869F0E7AAC0E},  // 1e-195
--        {0x8974836059CCA109, 0xBAE0A846D2195712},  // 1e-194
--        {0x2BD1A438703FC94B, 0xE998D258869FACD7},  // 1e-193
--        {0x7B6306A34627DDCF, 0x91FF83775423CC06},  // 1e-192
--        {0x1A3BC84C17B1D542, 0xB67F6455292CBF08},  // 1e-191
--        {0x20CABA5F1D9E4A93, 0xE41F3D6A7377EECA},  // 1e-190
--        {0x547EB47B7282EE9C, 0x8E938662882AF53E},  // 1e-189
--        {0xE99E619A4F23AA43, 0xB23867FB2A35B28D},  // 1e-188
--        {0x6405FA00E2EC94D4, 0xDEC681F9F4C31F31},  // 1e-187
--        {0xDE83BC408DD3DD04, 0x8B3C113C38F9F37E},  // 1e-186
--        {0x9624AB50B148D445, 0xAE0B158B4738705E},  // 1e-185
--        {0x3BADD624DD9B0957, 0xD98DDAEE19068C76},  // 1e-184
--        {0xE54CA5D70A80E5D6, 0x87F8A8D4CFA417C9},  // 1e-183
--        {0x5E9FCF4CCD211F4C, 0xA9F6D30A038D1DBC},  // 1e-182
--        {0x7647C3200069671F, 0xD47487CC8470652B},  // 1e-181
--        {0x29ECD9F40041E073, 0x84C8D4DFD2C63F3B},  // 1e-180
--        {0xF468107100525890, 0xA5FB0A17C777CF09},  // 1e-179
--        {0x7182148D4066EEB4, 0xCF79CC9DB955C2CC},  // 1e-178
--        {0xC6F14CD848405530, 0x81AC1FE293D599BF},  // 1e-177
--        {0xB8ADA00E5A506A7C, 0xA21727DB38CB002F},  // 1e-176
--        {0xA6D90811F0E4851C, 0xCA9CF1D206FDC03B},  // 1e-175
--        {0x908F4A166D1DA663, 0xFD442E4688BD304A},  // 1e-174
--        {0x9A598E4E043287FE, 0x9E4A9CEC15763E2E},  // 1e-173
--        {0x40EFF1E1853F29FD, 0xC5DD44271AD3CDBA},  // 1e-172
--        {0xD12BEE59E68EF47C, 0xF7549530E188C128},  // 1e-171
--        {0x82BB74F8301958CE, 0x9A94DD3E8CF578B9},  // 1e-170
--        {0xE36A52363C1FAF01, 0xC13A148E3032D6E7},  // 1e-169
--        {0xDC44E6C3CB279AC1, 0xF18899B1BC3F8CA1},  // 1e-168
--        {0x29AB103A5EF8C0B9, 0x96F5600F15A7B7E5},  // 1e-167
--        {0x7415D448F6B6F0E7, 0xBCB2B812DB11A5DE},  // 1e-166
--        {0x111B495B3464AD21, 0xEBDF661791D60F56},  // 1e-165
--        {0xCAB10DD900BEEC34, 0x936B9FCEBB25C995},  // 1e-164
--        {0x3D5D514F40EEA742, 0xB84687C269EF3BFB},  // 1e-163
--        {0x0CB4A5A3112A5112, 0xE65829B3046B0AFA},  // 1e-162
--        {0x47F0E785EABA72AB, 0x8FF71A0FE2C2E6DC},  // 1e-161
--        {0x59ED216765690F56, 0xB3F4E093DB73A093},  // 1e-160
--        {0x306869C13EC3532C, 0xE0F218B8D25088B8},  // 1e-159
--        {0x1E414218C73A13FB, 0x8C974F7383725573},  // 1e-158
--        {0xE5D1929EF90898FA, 0xAFBD2350644EEACF},  // 1e-157
--        {0xDF45F746B74ABF39, 0xDBAC6C247D62A583},  // 1e-156
--        {0x6B8BBA8C328EB783, 0x894BC396CE5DA772},  // 1e-155
--        {0x066EA92F3F326564, 0xAB9EB47C81F5114F},  // 1e-154
--        {0xC80A537B0EFEFEBD, 0xD686619BA27255A2},  // 1e-153
--        {0xBD06742CE95F5F36, 0x8613FD0145877585},  // 1e-152
--        {0x2C48113823B73704, 0xA798FC4196E952E7},  // 1e-151
--        {0xF75A15862CA504C5, 0xD17F3B51FCA3A7A0},  // 1e-150
--        {0x9A984D73DBE722FB, 0x82EF85133DE648C4},  // 1e-149
--        {0xC13E60D0D2E0EBBA, 0xA3AB66580D5FDAF5},  // 1e-148
--        {0x318DF905079926A8, 0xCC963FEE10B7D1B3},  // 1e-147
--        {0xFDF17746497F7052, 0xFFBBCFE994E5C61F},  // 1e-146
--        {0xFEB6EA8BEDEFA633, 0x9FD561F1FD0F9BD3},  // 1e-145
--        {0xFE64A52EE96B8FC0, 0xC7CABA6E7C5382C8},  // 1e-144
--        {0x3DFDCE7AA3C673B0, 0xF9BD690A1B68637B},  // 1e-143
--        {0x06BEA10CA65C084E, 0x9C1661A651213E2D},  // 1e-142
--        {0x486E494FCFF30A62, 0xC31BFA0FE5698DB8},  // 1e-141
--        {0x5A89DBA3C3EFCCFA, 0xF3E2F893DEC3F126},  // 1e-140
--        {0xF89629465A75E01C, 0x986DDB5C6B3A76B7},  // 1e-139
--        {0xF6BBB397F1135823, 0xBE89523386091465},  // 1e-138
--        {0x746AA07DED582E2C, 0xEE2BA6C0678B597F},  // 1e-137
--        {0xA8C2A44EB4571CDC, 0x94DB483840B717EF},  // 1e-136
--        {0x92F34D62616CE413, 0xBA121A4650E4DDEB},  // 1e-135
--        {0x77B020BAF9C81D17, 0xE896A0D7E51E1566},  // 1e-134
--        {0x0ACE1474DC1D122E, 0x915E2486EF32CD60},  // 1e-133
--        {0x0D819992132456BA, 0xB5B5ADA8AAFF80B8},  // 1e-132
--        {0x10E1FFF697ED6C69, 0xE3231912D5BF60E6},  // 1e-131
--        {0xCA8D3FFA1EF463C1, 0x8DF5EFABC5979C8F},  // 1e-130
--        {0xBD308FF8A6B17CB2, 0xB1736B96B6FD83B3},  // 1e-129
--        {0xAC7CB3F6D05DDBDE, 0xDDD0467C64BCE4A0},  // 1e-128
--        {0x6BCDF07A423AA96B, 0x8AA22C0DBEF60EE4},  // 1e-127
--        {0x86C16C98D2C953C6, 0xAD4AB7112EB3929D},  // 1e-126
--        {0xE871C7BF077BA8B7, 0xD89D64D57A607744},  // 1e-125
--        {0x11471CD764AD4972, 0x87625F056C7C4A8B},  // 1e-124
--        {0xD598E40D3DD89BCF, 0xA93AF6C6C79B5D2D},  // 1e-123
--        {0x4AFF1D108D4EC2C3, 0xD389B47879823479},  // 1e-122
--        {0xCEDF722A585139BA, 0x843610CB4BF160CB},  // 1e-121
--        {0xC2974EB4EE658828, 0xA54394FE1EEDB8FE},  // 1e-120
--        {0x733D226229FEEA32, 0xCE947A3DA6A9273E},  // 1e-119
--        {0x0806357D5A3F525F, 0x811CCC668829B887},  // 1e-118
--        {0xCA07C2DCB0CF26F7, 0xA163FF802A3426A8},  // 1e-117
--        {0xFC89B393DD02F0B5, 0xC9BCFF6034C13052},  // 1e-116
--        {0xBBAC2078D443ACE2, 0xFC2C3F3841F17C67},  // 1e-115
--        {0xD54B944B84AA4C0D, 0x9D9BA7832936EDC0},  // 1e-114
--        {0x0A9E795E65D4DF11, 0xC5029163F384A931},  // 1e-113
--        {0x4D4617B5FF4A16D5, 0xF64335BCF065D37D},  // 1e-112
--        {0x504BCED1BF8E4E45, 0x99EA0196163FA42E},  // 1e-111
--        {0xE45EC2862F71E1D6, 0xC06481FB9BCF8D39},  // 1e-110
--        {0x5D767327BB4E5A4C, 0xF07DA27A82C37088},  // 1e-109
--        {0x3A6A07F8D510F86F, 0x964E858C91BA2655},  // 1e-108
--        {0x890489F70A55368B, 0xBBE226EFB628AFEA},  // 1e-107
--        {0x2B45AC74CCEA842E, 0xEADAB0ABA3B2DBE5},  // 1e-106
--        {0x3B0B8BC90012929D, 0x92C8AE6B464FC96F},  // 1e-105
--        {0x09CE6EBB40173744, 0xB77ADA0617E3BBCB},  // 1e-104
--        {0xCC420A6A101D0515, 0xE55990879DDCAABD},  // 1e-103
--        {0x9FA946824A12232D, 0x8F57FA54C2A9EAB6},  // 1e-102
--        {0x47939822DC96ABF9, 0xB32DF8E9F3546564},  // 1e-101
--        {0x59787E2B93BC56F7, 0xDFF9772470297EBD},  // 1e-100
--        {0x57EB4EDB3C55B65A, 0x8BFBEA76C619EF36},  // 1e-99
--        {0xEDE622920B6B23F1, 0xAEFAE51477A06B03},  // 1e-98
--        {0xE95FAB368E45ECED, 0xDAB99E59958885C4},  // 1e-97
--        {0x11DBCB0218EBB414, 0x88B402F7FD75539B},  // 1e-96
--        {0xD652BDC29F26A119, 0xAAE103B5FCD2A881},  // 1e-95
--        {0x4BE76D3346F0495F, 0xD59944A37C0752A2},  // 1e-94
--        {0x6F70A4400C562DDB, 0x857FCAE62D8493A5},  // 1e-93
--        {0xCB4CCD500F6BB952, 0xA6DFBD9FB8E5B88E},  // 1e-92
--        {0x7E2000A41346A7A7, 0xD097AD07A71F26B2},  // 1e-91
--        {0x8ED400668C0C28C8, 0x825ECC24C873782F},  // 1e-90
--        {0x728900802F0F32FA, 0xA2F67F2DFA90563B},  // 1e-89
--        {0x4F2B40A03AD2FFB9, 0xCBB41EF979346BCA},  // 1e-88
--        {0xE2F610C84987BFA8, 0xFEA126B7D78186BC},  // 1e-87
--        {0x0DD9CA7D2DF4D7C9, 0x9F24B832E6B0F436},  // 1e-86
--        {0x91503D1C79720DBB, 0xC6EDE63FA05D3143},  // 1e-85
--        {0x75A44C6397CE912A, 0xF8A95FCF88747D94},  // 1e-84
--        {0xC986AFBE3EE11ABA, 0x9B69DBE1B548CE7C},  // 1e-83
--        {0xFBE85BADCE996168, 0xC24452DA229B021B},  // 1e-82
--        {0xFAE27299423FB9C3, 0xF2D56790AB41C2A2},  // 1e-81
--        {0xDCCD879FC967D41A, 0x97C560BA6B0919A5},  // 1e-80
--        {0x5400E987BBC1C920, 0xBDB6B8E905CB600F},  // 1e-79
--        {0x290123E9AAB23B68, 0xED246723473E3813},  // 1e-78
--        {0xF9A0B6720AAF6521, 0x9436C0760C86E30B},  // 1e-77
--        {0xF808E40E8D5B3E69, 0xB94470938FA89BCE},  // 1e-76
--        {0xB60B1D1230B20E04, 0xE7958CB87392C2C2},  // 1e-75
--        {0xB1C6F22B5E6F48C2, 0x90BD77F3483BB9B9},  // 1e-74
--        {0x1E38AEB6360B1AF3, 0xB4ECD5F01A4AA828},  // 1e-73
--        {0x25C6DA63C38DE1B0, 0xE2280B6C20DD5232},  // 1e-72
--        {0x579C487E5A38AD0E, 0x8D590723948A535F},  // 1e-71
--        {0x2D835A9DF0C6D851, 0xB0AF48EC79ACE837},  // 1e-70
--        {0xF8E431456CF88E65, 0xDCDB1B2798182244},  // 1e-69
--        {0x1B8E9ECB641B58FF, 0x8A08F0F8BF0F156B},  // 1e-68
--        {0xE272467E3D222F3F, 0xAC8B2D36EED2DAC5},  // 1e-67
--        {0x5B0ED81DCC6ABB0F, 0xD7ADF884AA879177},  // 1e-66
--        {0x98E947129FC2B4E9, 0x86CCBB52EA94BAEA},  // 1e-65
--        {0x3F2398D747B36224, 0xA87FEA27A539E9A5},  // 1e-64
--        {0x8EEC7F0D19A03AAD, 0xD29FE4B18E88640E},  // 1e-63
--        {0x1953CF68300424AC, 0x83A3EEEEF9153E89},  // 1e-62
--        {0x5FA8C3423C052DD7, 0xA48CEAAAB75A8E2B},  // 1e-61
--        {0x3792F412CB06794D, 0xCDB02555653131B6},  // 1e-60
--        {0xE2BBD88BBEE40BD0, 0x808E17555F3EBF11},  // 1e-59
--        {0x5B6ACEAEAE9D0EC4, 0xA0B19D2AB70E6ED6},  // 1e-58
--        {0xF245825A5A445275, 0xC8DE047564D20A8B},  // 1e-57
--        {0xEED6E2F0F0D56712, 0xFB158592BE068D2E},  // 1e-56
--        {0x55464DD69685606B, 0x9CED737BB6C4183D},  // 1e-55
--        {0xAA97E14C3C26B886, 0xC428D05AA4751E4C},  // 1e-54
--        {0xD53DD99F4B3066A8, 0xF53304714D9265DF},  // 1e-53
--        {0xE546A8038EFE4029, 0x993FE2C6D07B7FAB},  // 1e-52
--        {0xDE98520472BDD033, 0xBF8FDB78849A5F96},  // 1e-51
--        {0x963E66858F6D4440, 0xEF73D256A5C0F77C},  // 1e-50
--        {0xDDE7001379A44AA8, 0x95A8637627989AAD},  // 1e-49
--        {0x5560C018580D5D52, 0xBB127C53B17EC159},  // 1e-48
--        {0xAAB8F01E6E10B4A6, 0xE9D71B689DDE71AF},  // 1e-47
--        {0xCAB3961304CA70E8, 0x9226712162AB070D},  // 1e-46
--        {0x3D607B97C5FD0D22, 0xB6B00D69BB55C8D1},  // 1e-45
--        {0x8CB89A7DB77C506A, 0xE45C10C42A2B3B05},  // 1e-44
--        {0x77F3608E92ADB242, 0x8EB98A7A9A5B04E3},  // 1e-43
--        {0x55F038B237591ED3, 0xB267ED1940F1C61C},  // 1e-42
--        {0x6B6C46DEC52F6688, 0xDF01E85F912E37A3},  // 1e-41
--        {0x2323AC4B3B3DA015, 0x8B61313BBABCE2C6},  // 1e-40
--        {0xABEC975E0A0D081A, 0xAE397D8AA96C1B77},  // 1e-39
--        {0x96E7BD358C904A21, 0xD9C7DCED53C72255},  // 1e-38
--        {0x7E50D64177DA2E54, 0x881CEA14545C7575},  // 1e-37
--        {0xDDE50BD1D5D0B9E9, 0xAA242499697392D2},  // 1e-36
--        {0x955E4EC64B44E864, 0xD4AD2DBFC3D07787},  // 1e-35
--        {0xBD5AF13BEF0B113E, 0x84EC3C97DA624AB4},  // 1e-34
--        {0xECB1AD8AEACDD58E, 0xA6274BBDD0FADD61},  // 1e-33
--        {0x67DE18EDA5814AF2, 0xCFB11EAD453994BA},  // 1e-32
--        {0x80EACF948770CED7, 0x81CEB32C4B43FCF4},  // 1e-31
--        {0xA1258379A94D028D, 0xA2425FF75E14FC31},  // 1e-30
--        {0x096EE45813A04330, 0xCAD2F7F5359A3B3E},  // 1e-29
--        {0x8BCA9D6E188853FC, 0xFD87B5F28300CA0D},  // 1e-28
--        {0x775EA264CF55347D, 0x9E74D1B791E07E48},  // 1e-27
--        {0x95364AFE032A819D, 0xC612062576589DDA},  // 1e-26
--        {0x3A83DDBD83F52204, 0xF79687AED3EEC551},  // 1e-25
--        {0xC4926A9672793542, 0x9ABE14CD44753B52},  // 1e-24
--        {0x75B7053C0F178293, 0xC16D9A0095928A27},  // 1e-23
--        {0x5324C68B12DD6338, 0xF1C90080BAF72CB1},  // 1e-22
--        {0xD3F6FC16EBCA5E03, 0x971DA05074DA7BEE},  // 1e-21
--        {0x88F4BB1CA6BCF584, 0xBCE5086492111AEA},  // 1e-20
--        {0x2B31E9E3D06C32E5, 0xEC1E4A7DB69561A5},  // 1e-19
--        {0x3AFF322E62439FCF, 0x9392EE8E921D5D07},  // 1e-18
--        {0x09BEFEB9FAD487C2, 0xB877AA3236A4B449},  // 1e-17
--        {0x4C2EBE687989A9B3, 0xE69594BEC44DE15B},  // 1e-16
--        {0x0F9D37014BF60A10, 0x901D7CF73AB0ACD9},  // 1e-15
--        {0x538484C19EF38C94, 0xB424DC35095CD80F},  // 1e-14
--        {0x2865A5F206B06FB9, 0xE12E13424BB40E13},  // 1e-13
--        {0xF93F87B7442E45D3, 0x8CBCCC096F5088CB},  // 1e-12
--        {0xF78F69A51539D748, 0xAFEBFF0BCB24AAFE},  // 1e-11
--        {0xB573440E5A884D1B, 0xDBE6FECEBDEDD5BE},  // 1e-10
--        {0x31680A88F8953030, 0x89705F4136B4A597},  // 1e-9
--        {0xFDC20D2B36BA7C3D, 0xABCC77118461CEFC},  // 1e-8
--        {0x3D32907604691B4C, 0xD6BF94D5E57A42BC},  // 1e-7
--        {0xA63F9A49C2C1B10F, 0x8637BD05AF6C69B5},  // 1e-6
--        {0x0FCF80DC33721D53, 0xA7C5AC471B478423},  // 1e-5
--        {0xD3C36113404EA4A8, 0xD1B71758E219652B},  // 1e-4
--        {0x645A1CAC083126E9, 0x83126E978D4FDF3B},  // 1e-3
--        {0x3D70A3D70A3D70A3, 0xA3D70A3D70A3D70A},  // 1e-2
--        {0xCCCCCCCCCCCCCCCC, 0xCCCCCCCCCCCCCCCC},  // 1e-1
--        {0x0000000000000000, 0x8000000000000000},  // 1e0
--        {0x0000000000000000, 0xA000000000000000},  // 1e1
--        {0x0000000000000000, 0xC800000000000000},  // 1e2
--        {0x0000000000000000, 0xFA00000000000000},  // 1e3
--        {0x0000000000000000, 0x9C40000000000000},  // 1e4
--        {0x0000000000000000, 0xC350000000000000},  // 1e5
--        {0x0000000000000000, 0xF424000000000000},  // 1e6
--        {0x0000000000000000, 0x9896800000000000},  // 1e7
--        {0x0000000000000000, 0xBEBC200000000000},  // 1e8
--        {0x0000000000000000, 0xEE6B280000000000},  // 1e9
--        {0x0000000000000000, 0x9502F90000000000},  // 1e10
--        {0x0000000000000000, 0xBA43B74000000000},  // 1e11
--        {0x0000000000000000, 0xE8D4A51000000000},  // 1e12
--        {0x0000000000000000, 0x9184E72A00000000},  // 1e13
--        {0x0000000000000000, 0xB5E620F480000000},  // 1e14
--        {0x0000000000000000, 0xE35FA931A0000000},  // 1e15
--        {0x0000000000000000, 0x8E1BC9BF04000000},  // 1e16
--        {0x0000000000000000, 0xB1A2BC2EC5000000},  // 1e17
--        {0x0000000000000000, 0xDE0B6B3A76400000},  // 1e18
--        {0x0000000000000000, 0x8AC7230489E80000},  // 1e19
--        {0x0000000000000000, 0xAD78EBC5AC620000},  // 1e20
--        {0x0000000000000000, 0xD8D726B7177A8000},  // 1e21
--        {0x0000000000000000, 0x878678326EAC9000},  // 1e22
--        {0x0000000000000000, 0xA968163F0A57B400},  // 1e23
--        {0x0000000000000000, 0xD3C21BCECCEDA100},  // 1e24
--        {0x0000000000000000, 0x84595161401484A0},  // 1e25
--        {0x0000000000000000, 0xA56FA5B99019A5C8},  // 1e26
--        {0x0000000000000000, 0xCECB8F27F4200F3A},  // 1e27
--        {0x4000000000000000, 0x813F3978F8940984},  // 1e28
--        {0x5000000000000000, 0xA18F07D736B90BE5},  // 1e29
--        {0xA400000000000000, 0xC9F2C9CD04674EDE},  // 1e30
--        {0x4D00000000000000, 0xFC6F7C4045812296},  // 1e31
--        {0xF020000000000000, 0x9DC5ADA82B70B59D},  // 1e32
--        {0x6C28000000000000, 0xC5371912364CE305},  // 1e33
--        {0xC732000000000000, 0xF684DF56C3E01BC6},  // 1e34
--        {0x3C7F400000000000, 0x9A130B963A6C115C},  // 1e35
--        {0x4B9F100000000000, 0xC097CE7BC90715B3},  // 1e36
--        {0x1E86D40000000000, 0xF0BDC21ABB48DB20},  // 1e37
--        {0x1314448000000000, 0x96769950B50D88F4},  // 1e38
--        {0x17D955A000000000, 0xBC143FA4E250EB31},  // 1e39
--        {0x5DCFAB0800000000, 0xEB194F8E1AE525FD},  // 1e40
--        {0x5AA1CAE500000000, 0x92EFD1B8D0CF37BE},  // 1e41
--        {0xF14A3D9E40000000, 0xB7ABC627050305AD},  // 1e42
--        {0x6D9CCD05D0000000, 0xE596B7B0C643C719},  // 1e43
--        {0xE4820023A2000000, 0x8F7E32CE7BEA5C6F},  // 1e44
--        {0xDDA2802C8A800000, 0xB35DBF821AE4F38B},  // 1e45
--        {0xD50B2037AD200000, 0xE0352F62A19E306E},  // 1e46
--        {0x4526F422CC340000, 0x8C213D9DA502DE45},  // 1e47
--        {0x9670B12B7F410000, 0xAF298D050E4395D6},  // 1e48
--        {0x3C0CDD765F114000, 0xDAF3F04651D47B4C},  // 1e49
--        {0xA5880A69FB6AC800, 0x88D8762BF324CD0F},  // 1e50
--        {0x8EEA0D047A457A00, 0xAB0E93B6EFEE0053},  // 1e51
--        {0x72A4904598D6D880, 0xD5D238A4ABE98068},  // 1e52
--        {0x47A6DA2B7F864750, 0x85A36366EB71F041},  // 1e53
--        {0x999090B65F67D924, 0xA70C3C40A64E6C51},  // 1e54
--        {0xFFF4B4E3F741CF6D, 0xD0CF4B50CFE20765},  // 1e55
--        {0xBFF8F10E7A8921A4, 0x82818F1281ED449F},  // 1e56
--        {0xAFF72D52192B6A0D, 0xA321F2D7226895C7},  // 1e57
--        {0x9BF4F8A69F764490, 0xCBEA6F8CEB02BB39},  // 1e58
--        {0x02F236D04753D5B4, 0xFEE50B7025C36A08},  // 1e59
--        {0x01D762422C946590, 0x9F4F2726179A2245},  // 1e60
--        {0x424D3AD2B7B97EF5, 0xC722F0EF9D80AAD6},  // 1e61
--        {0xD2E0898765A7DEB2, 0xF8EBAD2B84E0D58B},  // 1e62
--        {0x63CC55F49F88EB2F, 0x9B934C3B330C8577},  // 1e63
--        {0x3CBF6B71C76B25FB, 0xC2781F49FFCFA6D5},  // 1e64
--        {0x8BEF464E3945EF7A, 0xF316271C7FC3908A},  // 1e65
--        {0x97758BF0E3CBB5AC, 0x97EDD871CFDA3A56},  // 1e66
--        {0x3D52EEED1CBEA317, 0xBDE94E8E43D0C8EC},  // 1e67
--        {0x4CA7AAA863EE4BDD, 0xED63A231D4C4FB27},  // 1e68
--        {0x8FE8CAA93E74EF6A, 0x945E455F24FB1CF8},  // 1e69
--        {0xB3E2FD538E122B44, 0xB975D6B6EE39E436},  // 1e70
--        {0x60DBBCA87196B616, 0xE7D34C64A9C85D44},  // 1e71
--        {0xBC8955E946FE31CD, 0x90E40FBEEA1D3A4A},  // 1e72
--        {0x6BABAB6398BDBE41, 0xB51D13AEA4A488DD},  // 1e73
--        {0xC696963C7EED2DD1, 0xE264589A4DCDAB14},  // 1e74
--        {0xFC1E1DE5CF543CA2, 0x8D7EB76070A08AEC},  // 1e75
--        {0x3B25A55F43294BCB, 0xB0DE65388CC8ADA8},  // 1e76
--        {0x49EF0EB713F39EBE, 0xDD15FE86AFFAD912},  // 1e77
--        {0x6E3569326C784337, 0x8A2DBF142DFCC7AB},  // 1e78
--        {0x49C2C37F07965404, 0xACB92ED9397BF996},  // 1e79
--        {0xDC33745EC97BE906, 0xD7E77A8F87DAF7FB},  // 1e80
--        {0x69A028BB3DED71A3, 0x86F0AC99B4E8DAFD},  // 1e81
--        {0xC40832EA0D68CE0C, 0xA8ACD7C0222311BC},  // 1e82
--        {0xF50A3FA490C30190, 0xD2D80DB02AABD62B},  // 1e83
--        {0x792667C6DA79E0FA, 0x83C7088E1AAB65DB},  // 1e84
--        {0x577001B891185938, 0xA4B8CAB1A1563F52},  // 1e85
--        {0xED4C0226B55E6F86, 0xCDE6FD5E09ABCF26},  // 1e86
--        {0x544F8158315B05B4, 0x80B05E5AC60B6178},  // 1e87
--        {0x696361AE3DB1C721, 0xA0DC75F1778E39D6},  // 1e88
--        {0x03BC3A19CD1E38E9, 0xC913936DD571C84C},  // 1e89
--        {0x04AB48A04065C723, 0xFB5878494ACE3A5F},  // 1e90
--        {0x62EB0D64283F9C76, 0x9D174B2DCEC0E47B},  // 1e91
--        {0x3BA5D0BD324F8394, 0xC45D1DF942711D9A},  // 1e92
--        {0xCA8F44EC7EE36479, 0xF5746577930D6500},  // 1e93
--        {0x7E998B13CF4E1ECB, 0x9968BF6ABBE85F20},  // 1e94
--        {0x9E3FEDD8C321A67E, 0xBFC2EF456AE276E8},  // 1e95
--        {0xC5CFE94EF3EA101E, 0xEFB3AB16C59B14A2},  // 1e96
--        {0xBBA1F1D158724A12, 0x95D04AEE3B80ECE5},  // 1e97
--        {0x2A8A6E45AE8EDC97, 0xBB445DA9CA61281F},  // 1e98
--        {0xF52D09D71A3293BD, 0xEA1575143CF97226},  // 1e99
--        {0x593C2626705F9C56, 0x924D692CA61BE758},  // 1e100
--        {0x6F8B2FB00C77836C, 0xB6E0C377CFA2E12E},  // 1e101
--        {0x0B6DFB9C0F956447, 0xE498F455C38B997A},  // 1e102
--        {0x4724BD4189BD5EAC, 0x8EDF98B59A373FEC},  // 1e103
--        {0x58EDEC91EC2CB657, 0xB2977EE300C50FE7},  // 1e104
--        {0x2F2967B66737E3ED, 0xDF3D5E9BC0F653E1},  // 1e105
--        {0xBD79E0D20082EE74, 0x8B865B215899F46C},  // 1e106
--        {0xECD8590680A3AA11, 0xAE67F1E9AEC07187},  // 1e107
--        {0xE80E6F4820CC9495, 0xDA01EE641A708DE9},  // 1e108
--        {0x3109058D147FDCDD, 0x884134FE908658B2},  // 1e109
--        {0xBD4B46F0599FD415, 0xAA51823E34A7EEDE},  // 1e110
--        {0x6C9E18AC7007C91A, 0xD4E5E2CDC1D1EA96},  // 1e111
--        {0x03E2CF6BC604DDB0, 0x850FADC09923329E},  // 1e112
--        {0x84DB8346B786151C, 0xA6539930BF6BFF45},  // 1e113
--        {0xE612641865679A63, 0xCFE87F7CEF46FF16},  // 1e114
--        {0x4FCB7E8F3F60C07E, 0x81F14FAE158C5F6E},  // 1e115
--        {0xE3BE5E330F38F09D, 0xA26DA3999AEF7749},  // 1e116
--        {0x5CADF5BFD3072CC5, 0xCB090C8001AB551C},  // 1e117
--        {0x73D9732FC7C8F7F6, 0xFDCB4FA002162A63},  // 1e118
--        {0x2867E7FDDCDD9AFA, 0x9E9F11C4014DDA7E},  // 1e119
--        {0xB281E1FD541501B8, 0xC646D63501A1511D},  // 1e120
--        {0x1F225A7CA91A4226, 0xF7D88BC24209A565},  // 1e121
--        {0x3375788DE9B06958, 0x9AE757596946075F},  // 1e122
--        {0x0052D6B1641C83AE, 0xC1A12D2FC3978937},  // 1e123
--        {0xC0678C5DBD23A49A, 0xF209787BB47D6B84},  // 1e124
--        {0xF840B7BA963646E0, 0x9745EB4D50CE6332},  // 1e125
--        {0xB650E5A93BC3D898, 0xBD176620A501FBFF},  // 1e126
--        {0xA3E51F138AB4CEBE, 0xEC5D3FA8CE427AFF},  // 1e127
--        {0xC66F336C36B10137, 0x93BA47C980E98CDF},  // 1e128
--        {0xB80B0047445D4184, 0xB8A8D9BBE123F017},  // 1e129
--        {0xA60DC059157491E5, 0xE6D3102AD96CEC1D},  // 1e130
--        {0x87C89837AD68DB2F, 0x9043EA1AC7E41392},  // 1e131
--        {0x29BABE4598C311FB, 0xB454E4A179DD1877},  // 1e132
--        {0xF4296DD6FEF3D67A, 0xE16A1DC9D8545E94},  // 1e133
--        {0x1899E4A65F58660C, 0x8CE2529E2734BB1D},  // 1e134
--        {0x5EC05DCFF72E7F8F, 0xB01AE745B101E9E4},  // 1e135
--        {0x76707543F4FA1F73, 0xDC21A1171D42645D},  // 1e136
--        {0x6A06494A791C53A8, 0x899504AE72497EBA},  // 1e137
--        {0x0487DB9D17636892, 0xABFA45DA0EDBDE69},  // 1e138
--        {0x45A9D2845D3C42B6, 0xD6F8D7509292D603},  // 1e139
--        {0x0B8A2392BA45A9B2, 0x865B86925B9BC5C2},  // 1e140
--        {0x8E6CAC7768D7141E, 0xA7F26836F282B732},  // 1e141
--        {0x3207D795430CD926, 0xD1EF0244AF2364FF},  // 1e142
--        {0x7F44E6BD49E807B8, 0x8335616AED761F1F},  // 1e143
--        {0x5F16206C9C6209A6, 0xA402B9C5A8D3A6E7},  // 1e144
--        {0x36DBA887C37A8C0F, 0xCD036837130890A1},  // 1e145
--        {0xC2494954DA2C9789, 0x802221226BE55A64},  // 1e146
--        {0xF2DB9BAA10B7BD6C, 0xA02AA96B06DEB0FD},  // 1e147
--        {0x6F92829494E5ACC7, 0xC83553C5C8965D3D},  // 1e148
--        {0xCB772339BA1F17F9, 0xFA42A8B73ABBF48C},  // 1e149
--        {0xFF2A760414536EFB, 0x9C69A97284B578D7},  // 1e150
--        {0xFEF5138519684ABA, 0xC38413CF25E2D70D},  // 1e151
--        {0x7EB258665FC25D69, 0xF46518C2EF5B8CD1},  // 1e152
--        {0xEF2F773FFBD97A61, 0x98BF2F79D5993802},  // 1e153
--        {0xAAFB550FFACFD8FA, 0xBEEEFB584AFF8603},  // 1e154
--        {0x95BA2A53F983CF38, 0xEEAABA2E5DBF6784},  // 1e155
--        {0xDD945A747BF26183, 0x952AB45CFA97A0B2},  // 1e156
--        {0x94F971119AEEF9E4, 0xBA756174393D88DF},  // 1e157
--        {0x7A37CD5601AAB85D, 0xE912B9D1478CEB17},  // 1e158
--        {0xAC62E055C10AB33A, 0x91ABB422CCB812EE},  // 1e159
--        {0x577B986B314D6009, 0xB616A12B7FE617AA},  // 1e160
--        {0xED5A7E85FDA0B80B, 0xE39C49765FDF9D94},  // 1e161
--        {0x14588F13BE847307, 0x8E41ADE9FBEBC27D},  // 1e162
--        {0x596EB2D8AE258FC8, 0xB1D219647AE6B31C},  // 1e163
--        {0x6FCA5F8ED9AEF3BB, 0xDE469FBD99A05FE3},  // 1e164
--        {0x25DE7BB9480D5854, 0x8AEC23D680043BEE},  // 1e165
--        {0xAF561AA79A10AE6A, 0xADA72CCC20054AE9},  // 1e166
--        {0x1B2BA1518094DA04, 0xD910F7FF28069DA4},  // 1e167
--        {0x90FB44D2F05D0842, 0x87AA9AFF79042286},  // 1e168
--        {0x353A1607AC744A53, 0xA99541BF57452B28},  // 1e169
--        {0x42889B8997915CE8, 0xD3FA922F2D1675F2},  // 1e170
--        {0x69956135FEBADA11, 0x847C9B5D7C2E09B7},  // 1e171
--        {0x43FAB9837E699095, 0xA59BC234DB398C25},  // 1e172
--        {0x94F967E45E03F4BB, 0xCF02B2C21207EF2E},  // 1e173
--        {0x1D1BE0EEBAC278F5, 0x8161AFB94B44F57D},  // 1e174
--        {0x6462D92A69731732, 0xA1BA1BA79E1632DC},  // 1e175
--        {0x7D7B8F7503CFDCFE, 0xCA28A291859BBF93},  // 1e176
--        {0x5CDA735244C3D43E, 0xFCB2CB35E702AF78},  // 1e177
--        {0x3A0888136AFA64A7, 0x9DEFBF01B061ADAB},  // 1e178
--        {0x088AAA1845B8FDD0, 0xC56BAEC21C7A1916},  // 1e179
--        {0x8AAD549E57273D45, 0xF6C69A72A3989F5B},  // 1e180
--        {0x36AC54E2F678864B, 0x9A3C2087A63F6399},  // 1e181
--        {0x84576A1BB416A7DD, 0xC0CB28A98FCF3C7F},  // 1e182
--        {0x656D44A2A11C51D5, 0xF0FDF2D3F3C30B9F},  // 1e183
--        {0x9F644AE5A4B1B325, 0x969EB7C47859E743},  // 1e184
--        {0x873D5D9F0DDE1FEE, 0xBC4665B596706114},  // 1e185
--        {0xA90CB506D155A7EA, 0xEB57FF22FC0C7959},  // 1e186
--        {0x09A7F12442D588F2, 0x9316FF75DD87CBD8},  // 1e187
--        {0x0C11ED6D538AEB2F, 0xB7DCBF5354E9BECE},  // 1e188
--        {0x8F1668C8A86DA5FA, 0xE5D3EF282A242E81},  // 1e189
--        {0xF96E017D694487BC, 0x8FA475791A569D10},  // 1e190
--        {0x37C981DCC395A9AC, 0xB38D92D760EC4455},  // 1e191
--        {0x85BBE253F47B1417, 0xE070F78D3927556A},  // 1e192
--        {0x93956D7478CCEC8E, 0x8C469AB843B89562},  // 1e193
--        {0x387AC8D1970027B2, 0xAF58416654A6BABB},  // 1e194
--        {0x06997B05FCC0319E, 0xDB2E51BFE9D0696A},  // 1e195
--        {0x441FECE3BDF81F03, 0x88FCF317F22241E2},  // 1e196
--        {0xD527E81CAD7626C3, 0xAB3C2FDDEEAAD25A},  // 1e197
--        {0x8A71E223D8D3B074, 0xD60B3BD56A5586F1},  // 1e198
--        {0xF6872D5667844E49, 0x85C7056562757456},  // 1e199
--        {0xB428F8AC016561DB, 0xA738C6BEBB12D16C},  // 1e200
--        {0xE13336D701BEBA52, 0xD106F86E69D785C7},  // 1e201
--        {0xECC0024661173473, 0x82A45B450226B39C},  // 1e202
--        {0x27F002D7F95D0190, 0xA34D721642B06084},  // 1e203
--        {0x31EC038DF7B441F4, 0xCC20CE9BD35C78A5},  // 1e204
--        {0x7E67047175A15271, 0xFF290242C83396CE},  // 1e205
--        {0x0F0062C6E984D386, 0x9F79A169BD203E41},  // 1e206
--        {0x52C07B78A3E60868, 0xC75809C42C684DD1},  // 1e207
--        {0xA7709A56CCDF8A82, 0xF92E0C3537826145},  // 1e208
--        {0x88A66076400BB691, 0x9BBCC7A142B17CCB},  // 1e209
--        {0x6ACFF893D00EA435, 0xC2ABF989935DDBFE},  // 1e210
--        {0x0583F6B8C4124D43, 0xF356F7EBF83552FE},  // 1e211
--        {0xC3727A337A8B704A, 0x98165AF37B2153DE},  // 1e212
--        {0x744F18C0592E4C5C, 0xBE1BF1B059E9A8D6},  // 1e213
--        {0x1162DEF06F79DF73, 0xEDA2EE1C7064130C},  // 1e214
--        {0x8ADDCB5645AC2BA8, 0x9485D4D1C63E8BE7},  // 1e215
--        {0x6D953E2BD7173692, 0xB9A74A0637CE2EE1},  // 1e216
--        {0xC8FA8DB6CCDD0437, 0xE8111C87C5C1BA99},  // 1e217
--        {0x1D9C9892400A22A2, 0x910AB1D4DB9914A0},  // 1e218
--        {0x2503BEB6D00CAB4B, 0xB54D5E4A127F59C8},  // 1e219
--        {0x2E44AE64840FD61D, 0xE2A0B5DC971F303A},  // 1e220
--        {0x5CEAECFED289E5D2, 0x8DA471A9DE737E24},  // 1e221
--        {0x7425A83E872C5F47, 0xB10D8E1456105DAD},  // 1e222
--        {0xD12F124E28F77719, 0xDD50F1996B947518},  // 1e223
--        {0x82BD6B70D99AAA6F, 0x8A5296FFE33CC92F},  // 1e224
--        {0x636CC64D1001550B, 0xACE73CBFDC0BFB7B},  // 1e225
--        {0x3C47F7E05401AA4E, 0xD8210BEFD30EFA5A},  // 1e226
--        {0x65ACFAEC34810A71, 0x8714A775E3E95C78},  // 1e227
--        {0x7F1839A741A14D0D, 0xA8D9D1535CE3B396},  // 1e228
--        {0x1EDE48111209A050, 0xD31045A8341CA07C},  // 1e229
--        {0x934AED0AAB460432, 0x83EA2B892091E44D},  // 1e230
--        {0xF81DA84D5617853F, 0xA4E4B66B68B65D60},  // 1e231
--        {0x36251260AB9D668E, 0xCE1DE40642E3F4B9},  // 1e232
--        {0xC1D72B7C6B426019, 0x80D2AE83E9CE78F3},  // 1e233
--        {0xB24CF65B8612F81F, 0xA1075A24E4421730},  // 1e234
--        {0xDEE033F26797B627, 0xC94930AE1D529CFC},  // 1e235
--        {0x169840EF017DA3B1, 0xFB9B7CD9A4A7443C},  // 1e236
--        {0x8E1F289560EE864E, 0x9D412E0806E88AA5},  // 1e237
--        {0xF1A6F2BAB92A27E2, 0xC491798A08A2AD4E},  // 1e238
--        {0xAE10AF696774B1DB, 0xF5B5D7EC8ACB58A2},  // 1e239
--        {0xACCA6DA1E0A8EF29, 0x9991A6F3D6BF1765},  // 1e240
--        {0x17FD090A58D32AF3, 0xBFF610B0CC6EDD3F},  // 1e241
--        {0xDDFC4B4CEF07F5B0, 0xEFF394DCFF8A948E},  // 1e242
--        {0x4ABDAF101564F98E, 0x95F83D0A1FB69CD9},  // 1e243
--        {0x9D6D1AD41ABE37F1, 0xBB764C4CA7A4440F},  // 1e244
--        {0x84C86189216DC5ED, 0xEA53DF5FD18D5513},  // 1e245
--        {0x32FD3CF5B4E49BB4, 0x92746B9BE2F8552C},  // 1e246
--        {0x3FBC8C33221DC2A1, 0xB7118682DBB66A77},  // 1e247
--        {0x0FABAF3FEAA5334A, 0xE4D5E82392A40515},  // 1e248
--        {0x29CB4D87F2A7400E, 0x8F05B1163BA6832D},  // 1e249
--        {0x743E20E9EF511012, 0xB2C71D5BCA9023F8},  // 1e250
--        {0x914DA9246B255416, 0xDF78E4B2BD342CF6},  // 1e251
--        {0x1AD089B6C2F7548E, 0x8BAB8EEFB6409C1A},  // 1e252
--        {0xA184AC2473B529B1, 0xAE9672ABA3D0C320},  // 1e253
--        {0xC9E5D72D90A2741E, 0xDA3C0F568CC4F3E8},  // 1e254
--        {0x7E2FA67C7A658892, 0x8865899617FB1871},  // 1e255
--        {0xDDBB901B98FEEAB7, 0xAA7EEBFB9DF9DE8D},  // 1e256
--        {0x552A74227F3EA565, 0xD51EA6FA85785631},  // 1e257
--        {0xD53A88958F87275F, 0x8533285C936B35DE},  // 1e258
--        {0x8A892ABAF368F137, 0xA67FF273B8460356},  // 1e259
--        {0x2D2B7569B0432D85, 0xD01FEF10A657842C},  // 1e260
--        {0x9C3B29620E29FC73, 0x8213F56A67F6B29B},  // 1e261
--        {0x8349F3BA91B47B8F, 0xA298F2C501F45F42},  // 1e262
--        {0x241C70A936219A73, 0xCB3F2F7642717713},  // 1e263
--        {0xED238CD383AA0110, 0xFE0EFB53D30DD4D7},  // 1e264
--        {0xF4363804324A40AA, 0x9EC95D1463E8A506},  // 1e265
--        {0xB143C6053EDCD0D5, 0xC67BB4597CE2CE48},  // 1e266
--        {0xDD94B7868E94050A, 0xF81AA16FDC1B81DA},  // 1e267
--        {0xCA7CF2B4191C8326, 0x9B10A4E5E9913128},  // 1e268
--        {0xFD1C2F611F63A3F0, 0xC1D4CE1F63F57D72},  // 1e269
--        {0xBC633B39673C8CEC, 0xF24A01A73CF2DCCF},  // 1e270
--        {0xD5BE0503E085D813, 0x976E41088617CA01},  // 1e271
--        {0x4B2D8644D8A74E18, 0xBD49D14AA79DBC82},  // 1e272
--        {0xDDF8E7D60ED1219E, 0xEC9C459D51852BA2},  // 1e273
--        {0xCABB90E5C942B503, 0x93E1AB8252F33B45},  // 1e274
--        {0x3D6A751F3B936243, 0xB8DA1662E7B00A17},  // 1e275
--        {0x0CC512670A783AD4, 0xE7109BFBA19C0C9D},  // 1e276
--        {0x27FB2B80668B24C5, 0x906A617D450187E2},  // 1e277
--        {0xB1F9F660802DEDF6, 0xB484F9DC9641E9DA},  // 1e278
--        {0x5E7873F8A0396973, 0xE1A63853BBD26451},  // 1e279
--        {0xDB0B487B6423E1E8, 0x8D07E33455637EB2},  // 1e280
--        {0x91CE1A9A3D2CDA62, 0xB049DC016ABC5E5F},  // 1e281
--        {0x7641A140CC7810FB, 0xDC5C5301C56B75F7},  // 1e282
--        {0xA9E904C87FCB0A9D, 0x89B9B3E11B6329BA},  // 1e283
--        {0x546345FA9FBDCD44, 0xAC2820D9623BF429},  // 1e284
--        {0xA97C177947AD4095, 0xD732290FBACAF133},  // 1e285
--        {0x49ED8EABCCCC485D, 0x867F59A9D4BED6C0},  // 1e286
--        {0x5C68F256BFFF5A74, 0xA81F301449EE8C70},  // 1e287
--        {0x73832EEC6FFF3111, 0xD226FC195C6A2F8C},  // 1e288
--};
-+// ---------------- Auxiliary - JSON
- 
--// wuffs_base__private_implementation__f64_powers_of_10 holds powers of 10 that
--// can be exactly represented by a float64 (what C calls a double).
--static const double wuffs_base__private_implementation__f64_powers_of_10[23] = {
--    1e0,  1e1,  1e2,  1e3,  1e4,  1e5,  1e6,  1e7,  1e8,  1e9,  1e10, 1e11,
--    1e12, 1e13, 1e14, 1e15, 1e16, 1e17, 1e18, 1e19, 1e20, 1e21, 1e22,
-+namespace wuffs_aux {
-+
-+struct DecodeJsonResult {
-+  DecodeJsonResult(std::string&& error_message0, uint64_t cursor_position0);
-+
-+  std::string error_message;
-+  uint64_t cursor_position;
- };
- 
--// ---------------- IEEE 754 Floating Point
-+class DecodeJsonCallbacks {
-+ public:
-+  virtual ~DecodeJsonCallbacks();
- 
--WUFFS_BASE__MAYBE_STATIC wuffs_base__lossy_value_u16  //
--wuffs_base__ieee_754_bit_representation__from_f64_to_u16_truncate(double f) {
--  uint64_t u = 0;
--  if (sizeof(uint64_t) == sizeof(double)) {
--    memcpy(&u, &f, sizeof(uint64_t));
--  }
--  uint16_t neg = ((uint16_t)((u >> 63) << 15));
--  u &= 0x7FFFFFFFFFFFFFFF;
--  uint64_t exp = u >> 52;
--  uint64_t man = u & 0x000FFFFFFFFFFFFF;
-+  // AppendXxx are called for leaf nodes: literals, numbers and strings. For
-+  // strings, the Callbacks implementation is responsible for tracking map keys
-+  // versus other values.
- 
--  if (exp == 0x7FF) {
--    if (man == 0) {  // Infinity.
--      wuffs_base__lossy_value_u16 ret;
--      ret.value = neg | 0x7C00;
--      ret.lossy = false;
--      return ret;
--    }
--    // NaN. Shift the 52 mantissa bits to 10 mantissa bits, keeping the most
--    // significant mantissa bit (quiet vs signaling NaNs). Also set the low 9
--    // bits of ret.value so that the 10-bit mantissa is non-zero.
--    wuffs_base__lossy_value_u16 ret;
--    ret.value = neg | 0x7DFF | ((uint16_t)(man >> 42));
--    ret.lossy = false;
--    return ret;
-+  virtual std::string AppendNull() = 0;
-+  virtual std::string AppendBool(bool val) = 0;
-+  virtual std::string AppendF64(double val) = 0;
-+  virtual std::string AppendI64(int64_t val) = 0;
-+  virtual std::string AppendTextString(std::string&& val) = 0;
- 
--  } else if (exp > 0x40E) {  // Truncate to the largest finite f16.
--    wuffs_base__lossy_value_u16 ret;
--    ret.value = neg | 0x7BFF;
--    ret.lossy = true;
--    return ret;
-+  // Push and Pop are called for container nodes: JSON arrays (lists) and JSON
-+  // objects (dictionaries).
-+  //
-+  // The flags bits combine exactly one of:
-+  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_NONE
-+  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_LIST
-+  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_DICT
-+  // and exactly one of:
-+  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE
-+  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST
-+  //  - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT
- 
--  } else if (exp <= 0x3E6) {  // Truncate to zero.
--    wuffs_base__lossy_value_u16 ret;
--    ret.value = neg;
--    ret.lossy = (u != 0);
--    return ret;
-+  virtual std::string Push(uint32_t flags) = 0;
-+  virtual std::string Pop(uint32_t flags) = 0;
- 
--  } else if (exp <= 0x3F0) {  // Normal f64, subnormal f16.
--    // Convert from a 53-bit mantissa (after realizing the implicit bit) to a
--    // 10-bit mantissa and then adjust for the exponent.
--    man |= 0x0010000000000000;
--    uint32_t shift = ((uint32_t)(1051 - exp));  // 1051 = 0x3F0 + 53 - 10.
--    uint64_t shifted_man = man >> shift;
--    wuffs_base__lossy_value_u16 ret;
--    ret.value = neg | ((uint16_t)shifted_man);
--    ret.lossy = (shifted_man << shift) != man;
--    return ret;
--  }
-+  // Done is always the last Callback method called by DecodeJson, whether or
-+  // not parsing the input as JSON encountered an error. Even when successful,
-+  // trailing data may remain in input and buffer. See "Unintuitive JSON
-+  // Parsing" (https://nullprogram.com/blog/2019/12/28/) which discusses JSON
-+  // parsing and when it stops.
-+  //
-+  // Do not keep a reference to buffer or buffer.data.ptr after Done returns,
-+  // as DecodeJson may then de-allocate the backing array.
-+  //
-+  // The default Done implementation is a no-op.
-+  virtual void  //
-+  Done(DecodeJsonResult& result, sync_io::Input& input, IOBuffer& buffer);
-+};
- 
--  // Normal f64, normal f16.
-+extern const char DecodeJson_BadJsonPointer[];
-+extern const char DecodeJson_NoMatch[];
- 
--  // Re-bias from 1023 to 15 and shift above f16's 10 mantissa bits.
--  exp = (exp - 1008) << 10;  // 1008 = 1023 - 15 = 0x3FF - 0xF.
-+// The FooArgBar types add structure to Foo's optional arguments. They wrap
-+// inner representations for several reasons:
-+//  - It provides a home for the DefaultValue static method, for Foo callers
-+//    that want to override some but not all optional arguments.
-+//  - It provides the "Bar" name at Foo call sites, which can help self-
-+//    document Foo calls with many arguemnts.
-+//  - It provides some type safety against accidentally transposing or omitting
-+//    adjacent fundamentally-numeric-typed optional arguments.
- 
--  // Convert from a 52-bit mantissa (excluding the implicit bit) to a 10-bit
--  // mantissa (again excluding the implicit bit). We lose some information if
--  // any of the bottom 42 bits are non-zero.
--  wuffs_base__lossy_value_u16 ret;
--  ret.value = neg | ((uint16_t)exp) | ((uint16_t)(man >> 42));
--  ret.lossy = (man << 22) != 0;
--  return ret;
--}
-+// DecodeJsonArgQuirks wraps an optional argument to DecodeJson.
-+struct DecodeJsonArgQuirks {
-+  explicit DecodeJsonArgQuirks(const QuirkKeyValuePair* ptr0,
-+                               const size_t len0);
- 
--WUFFS_BASE__MAYBE_STATIC wuffs_base__lossy_value_u32  //
--wuffs_base__ieee_754_bit_representation__from_f64_to_u32_truncate(double f) {
--  uint64_t u = 0;
--  if (sizeof(uint64_t) == sizeof(double)) {
--    memcpy(&u, &f, sizeof(uint64_t));
--  }
--  uint32_t neg = ((uint32_t)(u >> 63)) << 31;
--  u &= 0x7FFFFFFFFFFFFFFF;
--  uint64_t exp = u >> 52;
--  uint64_t man = u & 0x000FFFFFFFFFFFFF;
-+  // DefaultValue returns an empty slice.
-+  static DecodeJsonArgQuirks DefaultValue();
- 
--  if (exp == 0x7FF) {
--    if (man == 0) {  // Infinity.
--      wuffs_base__lossy_value_u32 ret;
--      ret.value = neg | 0x7F800000;
--      ret.lossy = false;
--      return ret;
--    }
--    // NaN. Shift the 52 mantissa bits to 23 mantissa bits, keeping the most
--    // significant mantissa bit (quiet vs signaling NaNs). Also set the low 22
--    // bits of ret.value so that the 23-bit mantissa is non-zero.
--    wuffs_base__lossy_value_u32 ret;
--    ret.value = neg | 0x7FBFFFFF | ((uint32_t)(man >> 29));
--    ret.lossy = false;
--    return ret;
-+  const QuirkKeyValuePair* ptr;
-+  const size_t len;
-+};
- 
--  } else if (exp > 0x47E) {  // Truncate to the largest finite f32.
--    wuffs_base__lossy_value_u32 ret;
--    ret.value = neg | 0x7F7FFFFF;
--    ret.lossy = true;
--    return ret;
-+// DecodeJsonArgJsonPointer wraps an optional argument to DecodeJson.
-+struct DecodeJsonArgJsonPointer {
-+  explicit DecodeJsonArgJsonPointer(std::string repr0);
- 
--  } else if (exp <= 0x369) {  // Truncate to zero.
--    wuffs_base__lossy_value_u32 ret;
--    ret.value = neg;
--    ret.lossy = (u != 0);
--    return ret;
-+  // DefaultValue returns an empty string.
-+  static DecodeJsonArgJsonPointer DefaultValue();
- 
--  } else if (exp <= 0x380) {  // Normal f64, subnormal f32.
--    // Convert from a 53-bit mantissa (after realizing the implicit bit) to a
--    // 23-bit mantissa and then adjust for the exponent.
--    man |= 0x0010000000000000;
--    uint32_t shift = ((uint32_t)(926 - exp));  // 926 = 0x380 + 53 - 23.
--    uint64_t shifted_man = man >> shift;
--    wuffs_base__lossy_value_u32 ret;
--    ret.value = neg | ((uint32_t)shifted_man);
--    ret.lossy = (shifted_man << shift) != man;
--    return ret;
--  }
-+  std::string repr;
-+};
- 
--  // Normal f64, normal f32.
-+// DecodeJson calls callbacks based on the JSON-formatted data in input.
-+//
-+// On success, the returned error_message is empty and cursor_position counts
-+// the number of bytes consumed. On failure, error_message is non-empty and
-+// cursor_position is the location of the error. That error may be a content
-+// error (invalid JSON) or an input error (e.g. network failure).
-+//
-+// json_pointer is a query in the JSON Pointer (RFC 6901) syntax. The callbacks
-+// run for the input's sub-node that matches the query. DecodeJson_NoMatch is
-+// returned if no matching sub-node was found. The empty query matches the
-+// input's root node, consistent with JSON Pointer semantics.
-+//
-+// The JSON Pointer implementation is greedy: duplicate keys are not rejected
-+// but only the first match for each '/'-separated fragment is followed.
-+DecodeJsonResult  //
-+DecodeJson(DecodeJsonCallbacks& callbacks,
-+           sync_io::Input& input,
-+           DecodeJsonArgQuirks quirks = DecodeJsonArgQuirks::DefaultValue(),
-+           DecodeJsonArgJsonPointer json_pointer =
-+               DecodeJsonArgJsonPointer::DefaultValue());
- 
--  // Re-bias from 1023 to 127 and shift above f32's 23 mantissa bits.
--  exp = (exp - 896) << 23;  // 896 = 1023 - 127 = 0x3FF - 0x7F.
-+}  // namespace wuffs_aux
- 
--  // Convert from a 52-bit mantissa (excluding the implicit bit) to a 23-bit
--  // mantissa (again excluding the implicit bit). We lose some information if
--  // any of the bottom 29 bits are non-zero.
--  wuffs_base__lossy_value_u32 ret;
--  ret.value = neg | ((uint32_t)exp) | ((uint32_t)(man >> 29));
--  ret.lossy = (man << 35) != 0;
--  return ret;
--}
-+#endif  // defined(__cplusplus) && defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
- 
--// --------
-+// ‼ WUFFS C HEADER ENDS HERE.
-+#ifdef WUFFS_IMPLEMENTATION
- 
--#define WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE 2047
--#define WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION 800
-+#ifdef __cplusplus
-+extern "C" {
-+#endif
- 
--// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL is the largest N
--// such that ((10 << N) < (1 << 64)).
--#define WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL 60
-+// ---------------- Fundamentals
- 
--// wuffs_base__private_implementation__high_prec_dec (abbreviated as HPD) is a
--// fixed precision floating point decimal number, augmented with ±infinity
--// values, but it cannot represent NaN (Not a Number).
-+// WUFFS_BASE__MAGIC is a magic number to check that initializers are called.
-+// It's not foolproof, given C doesn't automatically zero memory before use,
-+// but it should catch 99.99% of cases.
- //
--// "High precision" means that the mantissa holds 800 decimal digits. 800 is
--// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION.
-+// Its (non-zero) value is arbitrary, based on md5sum("wuffs").
-+#define WUFFS_BASE__MAGIC ((uint32_t)0x3CCB6C71)
-+
-+// WUFFS_BASE__DISABLED is a magic number to indicate that a non-recoverable
-+// error was previously encountered.
- //
--// An HPD isn't for general purpose arithmetic, only for conversions to and
--// from IEEE 754 double-precision floating point, where the largest and
--// smallest positive, finite values are approximately 1.8e+308 and 4.9e-324.
--// HPD exponents above +2047 mean infinity, below -2047 mean zero. The ±2047
--// bounds are further away from zero than ±(324 + 800), where 800 and 2047 is
--// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION and
--// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE.
-+// Its (non-zero) value is arbitrary, based on md5sum("disabled").
-+#define WUFFS_BASE__DISABLED ((uint32_t)0x075AE3D2)
-+
-+// Use switch cases for coroutine suspension points, similar to the technique
-+// in https://www.chiark.greenend.org.uk/~sgtatham/coroutines.html
- //
--// digits[.. num_digits] are the number's digits in big-endian order. The
--// uint8_t values are in the range [0 ..= 9], not ['0' ..= '9'], where e.g. '7'
--// is the ASCII value 0x37.
-+// The implicit fallthrough is intentional.
- //
--// decimal_point is the index (within digits) of the decimal point. It may be
--// negative or be larger than num_digits, in which case the explicit digits are
--// padded with implicit zeroes.
-+// We use trivial macros instead of an explicit assignment and case statement
-+// so that clang-format doesn't get confused by the unusual "case"s.
-+#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0 case 0:;
-+#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT(n) \
-+  coro_susp_point = n;                            \
-+  case n:;
-+
-+#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(n) \
-+  if (!status.repr) {                                           \
-+    goto ok;                                                    \
-+  } else if (*status.repr != '$') {                             \
-+    goto exit;                                                  \
-+  }                                                             \
-+  coro_susp_point = n;                                          \
-+  goto suspend;                                                 \
-+  case n:;
-+
-+// The "defined(__clang__)" isn't redundant. While vanilla clang defines
-+// __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not.
-+#if defined(__GNUC__) || defined(__clang__)
-+#define WUFFS_BASE__LIKELY(expr) (__builtin_expect(!!(expr), 1))
-+#define WUFFS_BASE__UNLIKELY(expr) (__builtin_expect(!!(expr), 0))
-+#else
-+#define WUFFS_BASE__LIKELY(expr) (expr)
-+#define WUFFS_BASE__UNLIKELY(expr) (expr)
-+#endif
-+
-+// --------
-+
-+static inline wuffs_base__empty_struct  //
-+wuffs_private_impl__ignore_status(wuffs_base__status z) {
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+static inline wuffs_base__status  //
-+wuffs_private_impl__status__ensure_not_a_suspension(wuffs_base__status z) {
-+  if (z.repr && (*z.repr == '$')) {
-+    z.repr = wuffs_base__error__cannot_return_a_suspension;
-+  }
-+  return z;
-+}
-+
-+// --------
-+
-+// wuffs_private_impl__iterate_total_advance returns the exclusive
-+// pointer-offset at which iteration should stop. The overall slice has length
-+// total_len, each iteration's sub-slice has length iter_len and are placed
-+// iter_advance apart.
- //
--// For example, if num_digits is 3 and digits is "\x07\x08\x09":
--//  - A decimal_point of -2 means ".00789"
--//  - A decimal_point of -1 means ".0789"
--//  - A decimal_point of +0 means ".789"
--//  - A decimal_point of +1 means "7.89"
--//  - A decimal_point of +2 means "78.9"
--//  - A decimal_point of +3 means "789."
--//  - A decimal_point of +4 means "7890."
--//  - A decimal_point of +5 means "78900."
-+// The iter_advance may not be larger than iter_len. The iter_advance may be
-+// smaller than iter_len, in which case the sub-slices will overlap.
- //
--// As above, a decimal_point higher than +2047 means that the overall value is
--// infinity, lower than -2047 means zero.
-+// The return value r satisfies ((0 <= r) && (r <= total_len)).
- //
--// negative is a sign bit. An HPD can distinguish positive and negative zero.
-+// For example, if total_len = 15, iter_len = 5 and iter_advance = 3, there are
-+// four iterations at offsets 0, 3, 6 and 9. This function returns 12.
- //
--// truncated is whether there are more than
--// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION digits, and at
--// least one of those extra digits are non-zero. The existence of long-tail
--// digits can affect rounding.
-+// 0123456789012345
-+// [....]
-+//    [....]
-+//       [....]
-+//          [....]
-+//             $
-+// 0123456789012345
- //
--// The "all fields are zero" value is valid, and represents the number +0.
--typedef struct wuffs_base__private_implementation__high_prec_dec__struct {
--  uint32_t num_digits;
--  int32_t decimal_point;
--  bool negative;
--  bool truncated;
--  uint8_t digits[WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION];
--} wuffs_base__private_implementation__high_prec_dec;
--
--// wuffs_base__private_implementation__high_prec_dec__trim trims trailing
--// zeroes from the h->digits[.. h->num_digits] slice. They have no benefit,
--// since we explicitly track h->decimal_point.
-+// For example, if total_len = 15, iter_len = 5 and iter_advance = 5, there are
-+// three iterations at offsets 0, 5 and 10. This function returns 15.
- //
--// Preconditions:
--//  - h is non-NULL.
--static inline void  //
--wuffs_base__private_implementation__high_prec_dec__trim(
--    wuffs_base__private_implementation__high_prec_dec* h) {
--  while ((h->num_digits > 0) && (h->digits[h->num_digits - 1] == 0)) {
--    h->num_digits--;
-+// 0123456789012345
-+// [....]
-+//      [....]
-+//           [....]
-+//                $
-+// 0123456789012345
-+static inline size_t  //
-+wuffs_private_impl__iterate_total_advance(size_t total_len,
-+                                          size_t iter_len,
-+                                          size_t iter_advance) {
-+  if (total_len >= iter_len) {
-+    size_t n = total_len - iter_len;
-+    return ((n / iter_advance) * iter_advance) + iter_advance;
-   }
-+  return 0;
- }
- 
--// wuffs_base__private_implementation__high_prec_dec__assign sets h to
--// represent the number x.
--//
--// Preconditions:
--//  - h is non-NULL.
--static void  //
--wuffs_base__private_implementation__high_prec_dec__assign(
--    wuffs_base__private_implementation__high_prec_dec* h,
--    uint64_t x,
--    bool negative) {
--  uint32_t n = 0;
-+// ---------------- Numeric Types
- 
--  // Set h->digits.
--  if (x > 0) {
--    // Calculate the digits, working right-to-left. After we determine n (how
--    // many digits there are), copy from buf to h->digits.
--    //
--    // UINT64_MAX, 18446744073709551615, is 20 digits long. It can be faster to
--    // copy a constant number of bytes than a variable number (20 instead of
--    // n). Make buf large enough (and start writing to it from the middle) so
--    // that can we always copy 20 bytes: the slice buf[(20-n) .. (40-n)].
--    uint8_t buf[40] = {0};
--    uint8_t* ptr = &buf[20];
--    do {
--      uint64_t remaining = x / 10;
--      x -= remaining * 10;
--      ptr--;
--      *ptr = (uint8_t)x;
--      n++;
--      x = remaining;
--    } while (x > 0);
--    memcpy(h->digits, ptr, 20);
--  }
-+extern const uint8_t wuffs_private_impl__low_bits_mask__u8[8];
-+extern const uint16_t wuffs_private_impl__low_bits_mask__u16[16];
-+extern const uint32_t wuffs_private_impl__low_bits_mask__u32[32];
-+extern const uint64_t wuffs_private_impl__low_bits_mask__u64[64];
- 
--  // Set h's other fields.
--  h->num_digits = n;
--  h->decimal_point = (int32_t)n;
--  h->negative = negative;
--  h->truncated = false;
--  wuffs_base__private_implementation__high_prec_dec__trim(h);
-+#define WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U8(n) \
-+  (wuffs_private_impl__low_bits_mask__u8[n])
-+#define WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U16(n) \
-+  (wuffs_private_impl__low_bits_mask__u16[n])
-+#define WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U32(n) \
-+  (wuffs_private_impl__low_bits_mask__u32[n])
-+#define WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U64(n) \
-+  (wuffs_private_impl__low_bits_mask__u64[n])
-+
-+// --------
-+
-+static inline void  //
-+wuffs_private_impl__u8__sat_add_indirect(uint8_t* x, uint8_t y) {
-+  *x = wuffs_base__u8__sat_add(*x, y);
- }
- 
--static wuffs_base__status  //
--wuffs_base__private_implementation__high_prec_dec__parse(
--    wuffs_base__private_implementation__high_prec_dec* h,
--    wuffs_base__slice_u8 s,
--    uint32_t options) {
--  if (!h) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  h->num_digits = 0;
--  h->decimal_point = 0;
--  h->negative = false;
--  h->truncated = false;
-+static inline void  //
-+wuffs_private_impl__u8__sat_sub_indirect(uint8_t* x, uint8_t y) {
-+  *x = wuffs_base__u8__sat_sub(*x, y);
-+}
- 
--  uint8_t* p = s.ptr;
--  uint8_t* q = s.ptr + s.len;
-+static inline void  //
-+wuffs_private_impl__u16__sat_add_indirect(uint16_t* x, uint16_t y) {
-+  *x = wuffs_base__u16__sat_add(*x, y);
-+}
- 
--  if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
--    for (;; p++) {
--      if (p >= q) {
--        return wuffs_base__make_status(wuffs_base__error__bad_argument);
--      } else if (*p != '_') {
--        break;
--      }
--    }
--  }
-+static inline void  //
-+wuffs_private_impl__u16__sat_sub_indirect(uint16_t* x, uint16_t y) {
-+  *x = wuffs_base__u16__sat_sub(*x, y);
-+}
- 
--  // Parse sign.
--  do {
--    if (*p == '+') {
--      p++;
--    } else if (*p == '-') {
--      h->negative = true;
--      p++;
--    } else {
--      break;
--    }
--    if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
--      for (;; p++) {
--        if (p >= q) {
--          return wuffs_base__make_status(wuffs_base__error__bad_argument);
--        } else if (*p != '_') {
--          break;
--        }
--      }
--    }
--  } while (0);
-+static inline void  //
-+wuffs_private_impl__u32__sat_add_indirect(uint32_t* x, uint32_t y) {
-+  *x = wuffs_base__u32__sat_add(*x, y);
-+}
- 
--  // Parse digits, up to (and including) a '.', 'E' or 'e'. Examples for each
--  // limb in this if-else chain:
--  //  - "0.789"
--  //  - "1002.789"
--  //  - ".789"
--  //  - Other (invalid input).
--  uint32_t nd = 0;
--  int32_t dp = 0;
--  bool no_digits_before_separator = false;
--  if (('0' == *p) &&
--      !(options &
--        WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES)) {
--    p++;
--    for (;; p++) {
--      if (p >= q) {
--        goto after_all;
--      } else if (*p ==
--                 ((options &
--                   WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
--                      ? ','
--                      : '.')) {
--        p++;
--        goto after_sep;
--      } else if ((*p == 'E') || (*p == 'e')) {
--        p++;
--        goto after_exp;
--      } else if ((*p != '_') ||
--                 !(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
--        return wuffs_base__make_status(wuffs_base__error__bad_argument);
--      }
--    }
-+static inline void  //
-+wuffs_private_impl__u32__sat_sub_indirect(uint32_t* x, uint32_t y) {
-+  *x = wuffs_base__u32__sat_sub(*x, y);
-+}
- 
--  } else if (('0' <= *p) && (*p <= '9')) {
--    if (*p == '0') {
--      for (; (p < q) && (*p == '0'); p++) {
--      }
--    } else {
--      h->digits[nd++] = (uint8_t)(*p - '0');
--      dp = (int32_t)nd;
--      p++;
--    }
-+static inline void  //
-+wuffs_private_impl__u64__sat_add_indirect(uint64_t* x, uint64_t y) {
-+  *x = wuffs_base__u64__sat_add(*x, y);
-+}
- 
--    for (;; p++) {
--      if (p >= q) {
--        goto after_all;
--      } else if (('0' <= *p) && (*p <= '9')) {
--        if (nd < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) {
--          h->digits[nd++] = (uint8_t)(*p - '0');
--          dp = (int32_t)nd;
--        } else if ('0' != *p) {
--          // Long-tail non-zeroes set the truncated bit.
--          h->truncated = true;
--        }
--      } else if (*p ==
--                 ((options &
--                   WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
--                      ? ','
--                      : '.')) {
--        p++;
--        goto after_sep;
--      } else if ((*p == 'E') || (*p == 'e')) {
--        p++;
--        goto after_exp;
--      } else if ((*p != '_') ||
--                 !(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
--        return wuffs_base__make_status(wuffs_base__error__bad_argument);
--      }
--    }
-+static inline void  //
-+wuffs_private_impl__u64__sat_sub_indirect(uint64_t* x, uint64_t y) {
-+  *x = wuffs_base__u64__sat_sub(*x, y);
-+}
- 
--  } else if (*p == ((options &
--                     WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
--                        ? ','
--                        : '.')) {
--    p++;
--    no_digits_before_separator = true;
-+// ---------------- Numeric Types (Utility)
- 
--  } else {
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
-+#define wuffs_base__utility__sign_extend_convert_u8_u32(a) \
-+  ((uint32_t)(int32_t)(int8_t)(a))
- 
--after_sep:
--  for (;; p++) {
--    if (p >= q) {
--      goto after_all;
--    } else if ('0' == *p) {
--      if (nd == 0) {
--        // Track leading zeroes implicitly.
--        dp--;
--      } else if (nd <
--                 WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) {
--        h->digits[nd++] = (uint8_t)(*p - '0');
--      }
--    } else if (('0' < *p) && (*p <= '9')) {
--      if (nd < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) {
--        h->digits[nd++] = (uint8_t)(*p - '0');
--      } else {
--        // Long-tail non-zeroes set the truncated bit.
--        h->truncated = true;
--      }
--    } else if ((*p == 'E') || (*p == 'e')) {
--      p++;
--      goto after_exp;
--    } else if ((*p != '_') ||
--               !(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
--      return wuffs_base__make_status(wuffs_base__error__bad_argument);
--    }
--  }
-+#define wuffs_base__utility__sign_extend_convert_u16_u32(a) \
-+  ((uint32_t)(int32_t)(int16_t)(a))
- 
--after_exp:
--  do {
--    if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
--      for (;; p++) {
--        if (p >= q) {
--          return wuffs_base__make_status(wuffs_base__error__bad_argument);
--        } else if (*p != '_') {
--          break;
--        }
--      }
--    }
-+#define wuffs_base__utility__sign_extend_rshift_u32(a, n) \
-+  ((uint32_t)(((int32_t)(a)) >> (n)))
- 
--    int32_t exp_sign = +1;
--    if (*p == '+') {
--      p++;
--    } else if (*p == '-') {
--      exp_sign = -1;
--      p++;
--    }
-+#define wuffs_base__utility__sign_extend_rshift_u64(a, n) \
-+  ((uint64_t)(((int64_t)(a)) >> (n)))
- 
--    int32_t exp = 0;
--    const int32_t exp_large =
--        WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE +
--        WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION;
--    bool saw_exp_digits = false;
--    for (; p < q; p++) {
--      if ((*p == '_') &&
--          (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
--        // No-op.
--      } else if (('0' <= *p) && (*p <= '9')) {
--        saw_exp_digits = true;
--        if (exp < exp_large) {
--          exp = (10 * exp) + ((int32_t)(*p - '0'));
--        }
--      } else {
--        break;
--      }
--    }
--    if (!saw_exp_digits) {
--      return wuffs_base__make_status(wuffs_base__error__bad_argument);
--    }
--    dp += exp_sign * exp;
--  } while (0);
-+#define wuffs_base__utility__make_bitvec256(e00, e01, e02, e03) \
-+  wuffs_base__make_bitvec256(e00, e01, e02, e03)
- 
--after_all:
--  if (p != q) {
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  h->num_digits = nd;
--  if (nd == 0) {
--    if (no_digits_before_separator) {
--      return wuffs_base__make_status(wuffs_base__error__bad_argument);
--    }
--    h->decimal_point = 0;
--  } else if (dp <
--             -WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) {
--    h->decimal_point =
--        -WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE - 1;
--  } else if (dp >
--             +WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) {
--    h->decimal_point =
--        +WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE + 1;
--  } else {
--    h->decimal_point = dp;
--  }
--  wuffs_base__private_implementation__high_prec_dec__trim(h);
--  return wuffs_base__make_status(NULL);
--}
-+#define wuffs_base__utility__make_optional_u63(h, v) \
-+  wuffs_base__make_optional_u63(h, v)
- 
--// --------
-+// ---------------- Slices and Tables
- 
--// wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits
--// returns the number of additional decimal digits when left-shifting by shift.
-+// This function basically returns (ptr + len), except that that expression is
-+// Undefined Behavior in C (but not C++) when ptr is NULL, even if len is zero.
- //
--// See below for preconditions.
--static uint32_t  //
--wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits(
--    wuffs_base__private_implementation__high_prec_dec* h,
--    uint32_t shift) {
--  // Masking with 0x3F should be unnecessary (assuming the preconditions) but
--  // it's cheap and ensures that we don't overflow the
--  // wuffs_base__private_implementation__hpd_left_shift array.
--  shift &= 63;
-+// Precondition: (ptr != NULL) || (len == 0).
-+static inline const uint8_t*  //
-+wuffs_private_impl__ptr_u8_plus_len(const uint8_t* ptr, size_t len) {
-+  return ptr ? (ptr + len) : NULL;
-+}
- 
--  uint32_t x_a = wuffs_base__private_implementation__hpd_left_shift[shift];
--  uint32_t x_b = wuffs_base__private_implementation__hpd_left_shift[shift + 1];
--  uint32_t num_new_digits = x_a >> 11;
--  uint32_t pow5_a = 0x7FF & x_a;
--  uint32_t pow5_b = 0x7FF & x_b;
-+// --------
- 
--  const uint8_t* pow5 =
--      &wuffs_base__private_implementation__powers_of_5[pow5_a];
--  uint32_t i = 0;
--  uint32_t n = pow5_b - pow5_a;
--  for (; i < n; i++) {
--    if (i >= h->num_digits) {
--      return num_new_digits - 1;
--    } else if (h->digits[i] == pow5[i]) {
--      continue;
--    } else if (h->digits[i] < pow5[i]) {
--      return num_new_digits - 1;
--    } else {
--      return num_new_digits;
--    }
-+// wuffs_private_impl__slice_u8__prefix returns up to the first up_to bytes of
-+// s.
-+static inline wuffs_base__slice_u8  //
-+wuffs_private_impl__slice_u8__prefix(wuffs_base__slice_u8 s, uint64_t up_to) {
-+  if (((uint64_t)(s.len)) > up_to) {
-+    s.len = ((size_t)up_to);
-   }
--  return num_new_digits;
-+  return s;
- }
- 
--// --------
-+// wuffs_private_impl__slice_u8__suffix returns up to the last up_to bytes of
-+// s.
-+static inline wuffs_base__slice_u8  //
-+wuffs_private_impl__slice_u8__suffix(wuffs_base__slice_u8 s, uint64_t up_to) {
-+  if (((uint64_t)(s.len)) > up_to) {
-+    s.ptr += ((uint64_t)(s.len)) - up_to;
-+    s.len = ((size_t)up_to);
-+  }
-+  return s;
-+}
- 
--// wuffs_base__private_implementation__high_prec_dec__rounded_integer returns
--// the integral (non-fractional) part of h, provided that it is 18 or fewer
--// decimal digits. For 19 or more digits, it returns UINT64_MAX. Note that:
--//  - (1 << 53) is    9007199254740992, which has 16 decimal digits.
--//  - (1 << 56) is   72057594037927936, which has 17 decimal digits.
--//  - (1 << 59) is  576460752303423488, which has 18 decimal digits.
--//  - (1 << 63) is 9223372036854775808, which has 19 decimal digits.
--// and that IEEE 754 double precision has 52 mantissa bits.
-+// wuffs_private_impl__slice_u8__copy_from_slice calls memmove(dst.ptr,
-+// src.ptr, len) where len is the minimum of dst.len and src.len.
- //
--// That integral part is rounded-to-even: rounding 7.5 or 8.5 both give 8.
--//
--// h's negative bit is ignored: rounding -8.6 returns 9.
--//
--// See below for preconditions.
--static uint64_t  //
--wuffs_base__private_implementation__high_prec_dec__rounded_integer(
--    wuffs_base__private_implementation__high_prec_dec* h) {
--  if ((h->num_digits == 0) || (h->decimal_point < 0)) {
--    return 0;
--  } else if (h->decimal_point > 18) {
--    return UINT64_MAX;
-+// Passing a wuffs_base__slice_u8 with all fields NULL or zero (a valid, empty
-+// slice) is valid and results in a no-op.
-+static inline uint64_t  //
-+wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__slice_u8 dst,
-+                                              wuffs_base__slice_u8 src) {
-+  size_t len = dst.len < src.len ? dst.len : src.len;
-+  if (len > 0) {
-+    memmove(dst.ptr, src.ptr, len);
-   }
-+  return len;
-+}
- 
--  uint32_t dp = (uint32_t)(h->decimal_point);
--  uint64_t n = 0;
--  uint32_t i = 0;
--  for (; i < dp; i++) {
--    n = (10 * n) + ((i < h->num_digits) ? h->digits[i] : 0);
-+static inline wuffs_base__empty_struct  //
-+wuffs_private_impl__bulk_load_host_endian(void* ptr,
-+                                          size_t len,
-+                                          wuffs_base__slice_u8 src) {
-+  if (len && (len <= src.len)) {
-+    memmove(ptr, src.ptr, len);
-   }
-+  return wuffs_base__make_empty_struct();
-+}
- 
--  bool round_up = false;
--  if (dp < h->num_digits) {
--    round_up = h->digits[dp] >= 5;
--    if ((h->digits[dp] == 5) && (dp + 1 == h->num_digits)) {
--      // We are exactly halfway. If we're truncated, round up, otherwise round
--      // to even.
--      round_up = h->truncated ||  //
--                 ((dp > 0) && (1 & h->digits[dp - 1]));
--    }
--  }
--  if (round_up) {
--    n++;
-+static inline wuffs_base__empty_struct  //
-+wuffs_private_impl__bulk_memset(void* ptr, size_t len, uint8_t byte_value) {
-+  if (len) {
-+    memset(ptr, byte_value, len);
-   }
-+  return wuffs_base__make_empty_struct();
-+}
- 
--  return n;
-+static inline wuffs_base__empty_struct  //
-+wuffs_private_impl__bulk_save_host_endian(void* ptr,
-+                                          size_t len,
-+                                          wuffs_base__slice_u8 dst) {
-+  if (len && (len <= dst.len)) {
-+    memmove(dst.ptr, ptr, len);
-+  }
-+  return wuffs_base__make_empty_struct();
- }
- 
--// wuffs_base__private_implementation__high_prec_dec__small_xshift shifts h's
--// number (where 'x' is 'l' or 'r' for left or right) by a small shift value.
--//
--// Preconditions:
--//  - h is non-NULL.
--//  - h->decimal_point is "not extreme".
--//  - shift is non-zero.
--//  - shift is "a small shift".
--//
--// "Not extreme" means within
--// ±WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE.
--//
--// "A small shift" means not more than
--// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL.
--//
--// wuffs_base__private_implementation__high_prec_dec__rounded_integer and
--// wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits
--// have the same preconditions.
--//
--// wuffs_base__private_implementation__high_prec_dec__lshift keeps the first
--// two preconditions but not the last two. Its shift argument is signed and
--// does not need to be "small": zero is a no-op, positive means left shift and
--// negative means right shift.
-+// --------
- 
--static void  //
--wuffs_base__private_implementation__high_prec_dec__small_lshift(
--    wuffs_base__private_implementation__high_prec_dec* h,
--    uint32_t shift) {
--  if (h->num_digits == 0) {
--    return;
-+static inline wuffs_base__slice_u8  //
-+wuffs_private_impl__table_u8__row_u32(wuffs_base__table_u8 t, uint32_t y) {
-+  if (t.ptr && (y < t.height)) {
-+    return wuffs_base__make_slice_u8(t.ptr + (t.stride * y), t.width);
-   }
--  uint32_t num_new_digits =
--      wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits(
--          h, shift);
--  uint32_t rx = h->num_digits - 1;                   // Read  index.
--  uint32_t wx = h->num_digits - 1 + num_new_digits;  // Write index.
--  uint64_t n = 0;
-+  return wuffs_base__empty_slice_u8();
-+}
- 
--  // Repeat: pick up a digit, put down a digit, right to left.
--  while (((int32_t)rx) >= 0) {
--    n += ((uint64_t)(h->digits[rx])) << shift;
--    uint64_t quo = n / 10;
--    uint64_t rem = n - (10 * quo);
--    if (wx < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) {
--      h->digits[wx] = (uint8_t)rem;
--    } else if (rem > 0) {
--      h->truncated = true;
--    }
--    n = quo;
--    wx--;
--    rx--;
--  }
-+// ---------------- Slices and Tables (Utility)
- 
--  // Put down leading digits, right to left.
--  while (n > 0) {
--    uint64_t quo = n / 10;
--    uint64_t rem = n - (10 * quo);
--    if (wx < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) {
--      h->digits[wx] = (uint8_t)rem;
--    } else if (rem > 0) {
--      h->truncated = true;
--    }
--    n = quo;
--    wx--;
--  }
-+#define wuffs_base__utility__empty_slice_u8 wuffs_base__empty_slice_u8
- 
--  // Finish.
--  h->num_digits += num_new_digits;
--  if (h->num_digits >
--      WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) {
--    h->num_digits = WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION;
--  }
--  h->decimal_point += (int32_t)num_new_digits;
--  wuffs_base__private_implementation__high_prec_dec__trim(h);
-+// ---------------- Ranges and Rects
-+
-+static inline uint32_t  //
-+wuffs_private_impl__range_ii_u32__get_min_incl(
-+    const wuffs_base__range_ii_u32* r) {
-+  return r->min_incl;
- }
- 
--static void  //
--wuffs_base__private_implementation__high_prec_dec__small_rshift(
--    wuffs_base__private_implementation__high_prec_dec* h,
--    uint32_t shift) {
--  uint32_t rx = 0;  // Read  index.
--  uint32_t wx = 0;  // Write index.
--  uint64_t n = 0;
-+static inline uint32_t  //
-+wuffs_private_impl__range_ii_u32__get_max_incl(
-+    const wuffs_base__range_ii_u32* r) {
-+  return r->max_incl;
-+}
- 
--  // Pick up enough leading digits to cover the first shift.
--  while ((n >> shift) == 0) {
--    if (rx < h->num_digits) {
--      // Read a digit.
--      n = (10 * n) + h->digits[rx++];
--    } else if (n == 0) {
--      // h's number used to be zero and remains zero.
--      return;
--    } else {
--      // Read sufficient implicit trailing zeroes.
--      while ((n >> shift) == 0) {
--        n = 10 * n;
--        rx++;
--      }
--      break;
--    }
--  }
--  h->decimal_point -= ((int32_t)(rx - 1));
--  if (h->decimal_point <
--      -WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) {
--    // After the shift, h's number is effectively zero.
--    h->num_digits = 0;
--    h->decimal_point = 0;
--    h->truncated = false;
--    return;
--  }
-+static inline uint32_t  //
-+wuffs_private_impl__range_ie_u32__get_min_incl(
-+    const wuffs_base__range_ie_u32* r) {
-+  return r->min_incl;
-+}
- 
--  // Repeat: pick up a digit, put down a digit, left to right.
--  uint64_t mask = (((uint64_t)(1)) << shift) - 1;
--  while (rx < h->num_digits) {
--    uint8_t new_digit = ((uint8_t)(n >> shift));
--    n = (10 * (n & mask)) + h->digits[rx++];
--    h->digits[wx++] = new_digit;
--  }
-+static inline uint32_t  //
-+wuffs_private_impl__range_ie_u32__get_max_excl(
-+    const wuffs_base__range_ie_u32* r) {
-+  return r->max_excl;
-+}
- 
--  // Put down trailing digits, left to right.
--  while (n > 0) {
--    uint8_t new_digit = ((uint8_t)(n >> shift));
--    n = 10 * (n & mask);
--    if (wx < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) {
--      h->digits[wx++] = new_digit;
--    } else if (new_digit > 0) {
--      h->truncated = true;
--    }
--  }
-+static inline uint64_t  //
-+wuffs_private_impl__range_ii_u64__get_min_incl(
-+    const wuffs_base__range_ii_u64* r) {
-+  return r->min_incl;
-+}
- 
--  // Finish.
--  h->num_digits = wx;
--  wuffs_base__private_implementation__high_prec_dec__trim(h);
-+static inline uint64_t  //
-+wuffs_private_impl__range_ii_u64__get_max_incl(
-+    const wuffs_base__range_ii_u64* r) {
-+  return r->max_incl;
- }
- 
--static void  //
--wuffs_base__private_implementation__high_prec_dec__lshift(
--    wuffs_base__private_implementation__high_prec_dec* h,
--    int32_t shift) {
--  if (shift > 0) {
--    while (shift > +WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL) {
--      wuffs_base__private_implementation__high_prec_dec__small_lshift(
--          h, WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL);
--      shift -= WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL;
--    }
--    wuffs_base__private_implementation__high_prec_dec__small_lshift(
--        h, ((uint32_t)(+shift)));
--  } else if (shift < 0) {
--    while (shift < -WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL) {
--      wuffs_base__private_implementation__high_prec_dec__small_rshift(
--          h, WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL);
--      shift += WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL;
--    }
--    wuffs_base__private_implementation__high_prec_dec__small_rshift(
--        h, ((uint32_t)(-shift)));
--  }
-+static inline uint64_t  //
-+wuffs_private_impl__range_ie_u64__get_min_incl(
-+    const wuffs_base__range_ie_u64* r) {
-+  return r->min_incl;
- }
- 
--// --------
-+static inline uint64_t  //
-+wuffs_private_impl__range_ie_u64__get_max_excl(
-+    const wuffs_base__range_ie_u64* r) {
-+  return r->max_excl;
-+}
- 
--// wuffs_base__private_implementation__high_prec_dec__round_etc rounds h's
--// number. For those functions that take an n argument, rounding produces at
--// most n digits (which is not necessarily at most n decimal places). Negative
--// n values are ignored, as well as any n greater than or equal to h's number
--// of digits. The etc__round_just_enough function implicitly chooses an n to
--// implement WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION.
--//
--// Preconditions:
--//  - h is non-NULL.
--//  - h->decimal_point is "not extreme".
--//
--// "Not extreme" means within
--// ±WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE.
-+// ---------------- Ranges and Rects (Utility)
- 
--static void  //
--wuffs_base__private_implementation__high_prec_dec__round_down(
--    wuffs_base__private_implementation__high_prec_dec* h,
--    int32_t n) {
--  if ((n < 0) || (h->num_digits <= (uint32_t)n)) {
--    return;
-+#define wuffs_base__utility__empty_range_ii_u32 wuffs_base__empty_range_ii_u32
-+#define wuffs_base__utility__empty_range_ie_u32 wuffs_base__empty_range_ie_u32
-+#define wuffs_base__utility__empty_range_ii_u64 wuffs_base__empty_range_ii_u64
-+#define wuffs_base__utility__empty_range_ie_u64 wuffs_base__empty_range_ie_u64
-+#define wuffs_base__utility__empty_rect_ii_u32 wuffs_base__empty_rect_ii_u32
-+#define wuffs_base__utility__empty_rect_ie_u32 wuffs_base__empty_rect_ie_u32
-+#define wuffs_base__utility__make_range_ii_u32 wuffs_base__make_range_ii_u32
-+#define wuffs_base__utility__make_range_ie_u32 wuffs_base__make_range_ie_u32
-+#define wuffs_base__utility__make_range_ii_u64 wuffs_base__make_range_ii_u64
-+#define wuffs_base__utility__make_range_ie_u64 wuffs_base__make_range_ie_u64
-+#define wuffs_base__utility__make_rect_ii_u32 wuffs_base__make_rect_ii_u32
-+#define wuffs_base__utility__make_rect_ie_u32 wuffs_base__make_rect_ie_u32
-+
-+// ---------------- I/O
-+
-+static inline uint64_t  //
-+wuffs_private_impl__io__count_since(uint64_t mark, uint64_t index) {
-+  if (index >= mark) {
-+    return index - mark;
-   }
--  h->num_digits = (uint32_t)(n);
--  wuffs_base__private_implementation__high_prec_dec__trim(h);
-+  return 0;
- }
- 
--static void  //
--wuffs_base__private_implementation__high_prec_dec__round_up(
--    wuffs_base__private_implementation__high_prec_dec* h,
--    int32_t n) {
--  if ((n < 0) || (h->num_digits <= (uint32_t)n)) {
--    return;
-+// TODO: drop the "const" in "const uint8_t* ptr". Some though required about
-+// the base.io_reader.since method returning a mutable "slice base.u8".
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wcast-qual"
-+#endif
-+static inline wuffs_base__slice_u8  //
-+wuffs_private_impl__io__since(uint64_t mark,
-+                              uint64_t index,
-+                              const uint8_t* ptr) {
-+  if (index >= mark) {
-+    return wuffs_base__make_slice_u8(((uint8_t*)ptr) + mark,
-+                                     ((size_t)(index - mark)));
-   }
-+  return wuffs_base__empty_slice_u8();
-+}
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
- 
--  for (n--; n >= 0; n--) {
--    if (h->digits[n] < 9) {
--      h->digits[n]++;
--      h->num_digits = (uint32_t)(n + 1);
--      return;
--    }
--  }
-+// --------
- 
--  // The number is all 9s. Change to a single 1 and adjust the decimal point.
--  h->digits[0] = 1;
--  h->num_digits = 1;
--  h->decimal_point++;
-+static inline void  //
-+wuffs_private_impl__io_reader__limit(const uint8_t** ptr_io2_r,
-+                                     const uint8_t* iop_r,
-+                                     uint64_t limit) {
-+  if (((uint64_t)(*ptr_io2_r - iop_r)) > limit) {
-+    *ptr_io2_r = iop_r + limit;
-+  }
- }
- 
--static void  //
--wuffs_base__private_implementation__high_prec_dec__round_nearest(
--    wuffs_base__private_implementation__high_prec_dec* h,
--    int32_t n) {
--  if ((n < 0) || (h->num_digits <= (uint32_t)n)) {
--    return;
-+static inline uint32_t  //
-+wuffs_private_impl__io_reader__limited_copy_u32_to_slice(
-+    const uint8_t** ptr_iop_r,
-+    const uint8_t* io2_r,
-+    uint32_t length,
-+    wuffs_base__slice_u8 dst) {
-+  const uint8_t* iop_r = *ptr_iop_r;
-+  size_t n = dst.len;
-+  if (n > length) {
-+    n = length;
-   }
--  bool up = h->digits[n] >= 5;
--  if ((h->digits[n] == 5) && ((n + 1) == ((int32_t)(h->num_digits)))) {
--    up = h->truncated ||  //
--         ((n > 0) && ((h->digits[n - 1] & 1) != 0));
-+  if (n > ((size_t)(io2_r - iop_r))) {
-+    n = (size_t)(io2_r - iop_r);
-   }
--
--  if (up) {
--    wuffs_base__private_implementation__high_prec_dec__round_up(h, n);
--  } else {
--    wuffs_base__private_implementation__high_prec_dec__round_down(h, n);
-+  if (n > 0) {
-+    memmove(dst.ptr, iop_r, n);
-+    *ptr_iop_r += n;
-   }
-+  return (uint32_t)(n);
- }
- 
--static void  //
--wuffs_base__private_implementation__high_prec_dec__round_just_enough(
--    wuffs_base__private_implementation__high_prec_dec* h,
--    int32_t exp2,
--    uint64_t mantissa) {
--  // The magic numbers 52 and 53 in this function are because IEEE 754 double
--  // precision has 52 mantissa bits.
--  //
--  // Let f be the floating point number represented by exp2 and mantissa (and
--  // also the number in h): the number (mantissa * (2 ** (exp2 - 52))).
--  //
--  // If f is zero or a small integer, we can return early.
--  if ((mantissa == 0) ||
--      ((exp2 < 53) && (h->decimal_point >= ((int32_t)(h->num_digits))))) {
--    return;
-+// wuffs_private_impl__io_reader__match7 returns whether the io_reader's
-+// upcoming bytes start with the given prefix (up to 7 bytes long). It is
-+// peek-like, not read-like, in that there are no side-effects.
-+//
-+// The low 3 bits of a hold the prefix length, n.
-+//
-+// The high 56 bits of a hold the prefix itself, in little-endian order. The
-+// first prefix byte is in bits 8..=15, the second prefix byte is in bits
-+// 16..=23, etc. The high (8 * (7 - n)) bits are ignored.
-+//
-+// There are three possible return values:
-+//  - 0 means success.
-+//  - 1 means inconclusive, equivalent to "$short read".
-+//  - 2 means failure.
-+static inline uint32_t  //
-+wuffs_private_impl__io_reader__match7(const uint8_t* iop_r,
-+                                      const uint8_t* io2_r,
-+                                      wuffs_base__io_buffer* r,
-+                                      uint64_t a) {
-+  uint32_t n = a & 7;
-+  a >>= 8;
-+  if ((io2_r - iop_r) >= 8) {
-+    uint64_t x = wuffs_base__peek_u64le__no_bounds_check(iop_r);
-+    uint32_t shift = 8 * (8 - n);
-+    return ((a << shift) == (x << shift)) ? 0 : 2;
-+  }
-+  for (; n > 0; n--) {
-+    if (iop_r >= io2_r) {
-+      return (r && r->meta.closed) ? 2 : 1;
-+    } else if (*iop_r != ((uint8_t)(a))) {
-+      return 2;
-+    }
-+    iop_r++;
-+    a >>= 8;
-   }
-+  return 0;
-+}
- 
--  // The smallest normal f has an exp2 of -1022 and a mantissa of (1 << 52).
--  // Subnormal numbers have the same exp2 but a smaller mantissa.
--  static const int32_t min_incl_normal_exp2 = -1022;
--  static const uint64_t min_incl_normal_mantissa = 0x0010000000000000ul;
-+static inline wuffs_base__io_buffer*  //
-+wuffs_private_impl__io_reader__set(wuffs_base__io_buffer* b,
-+                                   const uint8_t** ptr_iop_r,
-+                                   const uint8_t** ptr_io0_r,
-+                                   const uint8_t** ptr_io1_r,
-+                                   const uint8_t** ptr_io2_r,
-+                                   wuffs_base__slice_u8 data,
-+                                   uint64_t history_position) {
-+  b->data = data;
-+  b->meta.wi = data.len;
-+  b->meta.ri = 0;
-+  b->meta.pos = history_position;
-+  b->meta.closed = false;
- 
--  // Compute lower and upper bounds such that any number between them (possibly
--  // inclusive) will round to f. First, the lower bound. Our number f is:
--  //   ((mantissa + 0)         * (2 ** (  exp2 - 52)))
--  //
--  // The next lowest floating point number is:
--  //   ((mantissa - 1)         * (2 ** (  exp2 - 52)))
--  // unless (mantissa - 1) drops the (1 << 52) bit and exp2 is not the
--  // min_incl_normal_exp2. Either way, call it:
--  //   ((l_mantissa)           * (2 ** (l_exp2 - 52)))
--  //
--  // The lower bound is halfway between them (noting that 52 became 53):
--  //   (((2 * l_mantissa) + 1) * (2 ** (l_exp2 - 53)))
--  int32_t l_exp2 = exp2;
--  uint64_t l_mantissa = mantissa - 1;
--  if ((exp2 > min_incl_normal_exp2) && (mantissa <= min_incl_normal_mantissa)) {
--    l_exp2 = exp2 - 1;
--    l_mantissa = (2 * mantissa) - 1;
--  }
--  wuffs_base__private_implementation__high_prec_dec lower;
--  wuffs_base__private_implementation__high_prec_dec__assign(
--      &lower, (2 * l_mantissa) + 1, false);
--  wuffs_base__private_implementation__high_prec_dec__lshift(&lower,
--                                                            l_exp2 - 53);
-+  *ptr_iop_r = data.ptr;
-+  *ptr_io0_r = data.ptr;
-+  *ptr_io1_r = data.ptr;
-+  *ptr_io2_r = data.ptr + data.len;
- 
--  // Next, the upper bound. Our number f is:
--  //   ((mantissa + 0)       * (2 ** (exp2 - 52)))
--  //
--  // The next highest floating point number is:
--  //   ((mantissa + 1)       * (2 ** (exp2 - 52)))
--  //
--  // The upper bound is halfway between them (noting that 52 became 53):
--  //   (((2 * mantissa) + 1) * (2 ** (exp2 - 53)))
--  wuffs_base__private_implementation__high_prec_dec upper;
--  wuffs_base__private_implementation__high_prec_dec__assign(
--      &upper, (2 * mantissa) + 1, false);
--  wuffs_base__private_implementation__high_prec_dec__lshift(&upper, exp2 - 53);
-+  return b;
-+}
- 
--  // The lower and upper bounds are possible outputs only if the original
--  // mantissa is even, so that IEEE round-to-even would round to the original
--  // mantissa and not its neighbors.
--  bool inclusive = (mantissa & 1) == 0;
-+// --------
- 
--  // As we walk the digits, we want to know whether rounding up would fall
--  // within the upper bound. This is tracked by upper_delta:
--  //  - When -1, the digits of h and upper are the same so far.
--  //  - When +0, we saw a difference of 1 between h and upper on a previous
--  //    digit and subsequently only 9s for h and 0s for upper. Thus, rounding
--  //    up may fall outside of the bound if !inclusive.
--  //  - When +1, the difference is greater than 1 and we know that rounding up
--  //    falls within the bound.
--  //
--  // This is a state machine with three states. The numerical value for each
--  // state (-1, +0 or +1) isn't important, other than their order.
--  int upper_delta = -1;
-+static inline uint64_t  //
-+wuffs_private_impl__io_writer__copy_from_slice(uint8_t** ptr_iop_w,
-+                                               uint8_t* io2_w,
-+                                               wuffs_base__slice_u8 src) {
-+  uint8_t* iop_w = *ptr_iop_w;
-+  size_t n = src.len;
-+  if (n > ((size_t)(io2_w - iop_w))) {
-+    n = (size_t)(io2_w - iop_w);
-+  }
-+  if (n > 0) {
-+    memmove(iop_w, src.ptr, n);
-+    *ptr_iop_w += n;
-+  }
-+  return (uint64_t)(n);
-+}
- 
--  // We can now figure out the shortest number of digits required. Walk the
--  // digits until h has distinguished itself from lower or upper.
--  //
--  // The zi and zd variables are indexes and digits, for z in l (lower), h (the
--  // number) and u (upper).
-+static inline void  //
-+wuffs_private_impl__io_writer__limit(uint8_t** ptr_io2_w,
-+                                     uint8_t* iop_w,
-+                                     uint64_t limit) {
-+  if (((uint64_t)(*ptr_io2_w - iop_w)) > limit) {
-+    *ptr_io2_w = iop_w + limit;
-+  }
-+}
-+
-+static inline uint32_t  //
-+wuffs_private_impl__io_writer__limited_copy_u32_from_history(
-+    uint8_t** ptr_iop_w,
-+    uint8_t* io0_w,
-+    uint8_t* io2_w,
-+    uint32_t length,
-+    uint32_t distance) {
-+  if (!distance) {
-+    return 0;
-+  }
-+  uint8_t* p = *ptr_iop_w;
-+  if ((size_t)(p - io0_w) < (size_t)(distance)) {
-+    return 0;
-+  }
-+  uint8_t* q = p - distance;
-+  size_t n = (size_t)(io2_w - p);
-+  if ((size_t)(length) > n) {
-+    length = (uint32_t)(n);
-+  } else {
-+    n = (size_t)(length);
-+  }
-+  // TODO: unrolling by 3 seems best for the std/deflate benchmarks, but that
-+  // is mostly because 3 is the minimum length for the deflate format. This
-+  // function implementation shouldn't overfit to that one format. Perhaps the
-+  // limited_copy_u32_from_history Wuffs method should also take an unroll hint
-+  // argument, and the cgen can look if that argument is the constant
-+  // expression '3'.
-   //
--  // The lower, h and upper numbers may have their decimal points at different
--  // places. In this case, upper is the longest, so we iterate ui starting from
--  // 0 and iterate li and hi starting from either 0 or -1.
--  int32_t ui = 0;
--  for (;; ui++) {
--    // Calculate hd, the middle number's digit.
--    int32_t hi = ui - upper.decimal_point + h->decimal_point;
--    if (hi >= ((int32_t)(h->num_digits))) {
--      break;
--    }
--    uint8_t hd = (((uint32_t)hi) < h->num_digits) ? h->digits[hi] : 0;
-+  // See also wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast
-+  // below.
-+  for (; n >= 3; n -= 3) {
-+    *p++ = *q++;
-+    *p++ = *q++;
-+    *p++ = *q++;
-+  }
-+  for (; n; n--) {
-+    *p++ = *q++;
-+  }
-+  *ptr_iop_w = p;
-+  return length;
-+}
- 
--    // Calculate ld, the lower bound's digit.
--    int32_t li = ui - upper.decimal_point + lower.decimal_point;
--    uint8_t ld = (((uint32_t)li) < lower.num_digits) ? lower.digits[li] : 0;
-+// wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast is like
-+// the wuffs_private_impl__io_writer__limited_copy_u32_from_history function
-+// above, but has stronger pre-conditions.
-+//
-+// The caller needs to prove that:
-+//  - length   >= 1
-+//  - length   <= (io2_w      - *ptr_iop_w)
-+//  - distance >= 1
-+//  - distance <= (*ptr_iop_w - io0_w)
-+static inline uint32_t  //
-+wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast(
-+    uint8_t** ptr_iop_w,
-+    uint8_t* io0_w,
-+    uint8_t* io2_w,
-+    uint32_t length,
-+    uint32_t distance) {
-+  uint8_t* p = *ptr_iop_w;
-+  uint8_t* q = p - distance;
-+  uint32_t n = length;
-+  for (; n >= 3; n -= 3) {
-+    *p++ = *q++;
-+    *p++ = *q++;
-+    *p++ = *q++;
-+  }
-+  for (; n; n--) {
-+    *p++ = *q++;
-+  }
-+  *ptr_iop_w = p;
-+  return length;
-+}
- 
--    // We can round down (truncate) if lower has a different digit than h or if
--    // lower is inclusive and is exactly the result of rounding down (i.e. we
--    // have reached the final digit of lower).
--    bool can_round_down =
--        (ld != hd) ||  //
--        (inclusive && ((li + 1) == ((int32_t)(lower.num_digits))));
-+// wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast_return_cusp
-+// is like the
-+// wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast function,
-+// but also returns the cusp: a byte pair (as a u16le) being the last byte of
-+// and next byte after the copied history.
-+//
-+// For example, if history was [10, 11, 12, 13, 14, 15, 16, 17, 18] then:
-+//  - copying l=3, d=8 produces [11, 12, 13] and the cusp is (13, 14).
-+//  - copying l=3, d=2 produces [17, 18, 17] and the cusp is (17, 18).
-+//
-+// The caller needs to prove that:
-+//  - length   >= 1
-+//  - length   <= (io2_w      - *ptr_iop_w)
-+//  - distance >= 1
-+//  - distance <= (*ptr_iop_w - io0_w)
-+static inline uint32_t  //
-+wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast_return_cusp(
-+    uint8_t** ptr_iop_w,
-+    uint8_t* io0_w,
-+    uint8_t* io2_w,
-+    uint32_t length,
-+    uint32_t distance) {
-+  uint8_t* p = *ptr_iop_w;
-+  uint8_t* q = p - distance;
-+  uint32_t n = length;
-+  for (; n >= 3; n -= 3) {
-+    *p++ = *q++;
-+    *p++ = *q++;
-+    *p++ = *q++;
-+  }
-+  for (; n; n--) {
-+    *p++ = *q++;
-+  }
-+  *ptr_iop_w = p;
-+  return (uint32_t)wuffs_base__peek_u16le__no_bounds_check(q - 1);
-+}
- 
--    // Calculate ud, the upper bound's digit, and update upper_delta.
--    uint8_t ud = (((uint32_t)ui) < upper.num_digits) ? upper.digits[ui] : 0;
--    if (upper_delta < 0) {
--      if ((hd + 1) < ud) {
--        // For example:
--        // h     = 12345???
--        // upper = 12347???
--        upper_delta = +1;
--      } else if (hd != ud) {
--        // For example:
--        // h     = 12345???
--        // upper = 12346???
--        upper_delta = +0;
--      }
--    } else if (upper_delta == 0) {
--      if ((hd != 9) || (ud != 0)) {
--        // For example:
--        // h     = 1234598?
--        // upper = 1234600?
--        upper_delta = +1;
--      }
-+// wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast
-+// copies the previous byte (the one immediately before *ptr_iop_w), copying 8
-+// byte chunks at a time. Each chunk contains 8 repetitions of the same byte.
-+//
-+// In terms of number of bytes copied, length is rounded up to a multiple of 8.
-+// As a special case, a zero length rounds up to 8 (even though 0 is already a
-+// multiple of 8), since there is always at least one 8 byte chunk copied.
-+//
-+// In terms of advancing *ptr_iop_w, length is not rounded up.
-+//
-+// The caller needs to prove that:
-+//  - length       >= 1
-+//  - (length + 8) <= (io2_w      - *ptr_iop_w)
-+//  - distance     == 1
-+//  - distance     <= (*ptr_iop_w - io0_w)
-+static inline uint32_t  //
-+wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast(
-+    uint8_t** ptr_iop_w,
-+    uint8_t* io0_w,
-+    uint8_t* io2_w,
-+    uint32_t length,
-+    uint32_t distance) {
-+  uint8_t* p = *ptr_iop_w;
-+  uint64_t x = p[-1];
-+  x |= x << 8;
-+  x |= x << 16;
-+  x |= x << 32;
-+  uint32_t n = length;
-+  while (1) {
-+    wuffs_base__poke_u64le__no_bounds_check(p, x);
-+    if (n <= 8) {
-+      p += n;
-+      break;
-     }
-+    p += 8;
-+    n -= 8;
-+  }
-+  *ptr_iop_w = p;
-+  return length;
-+}
- 
--    // We can round up if upper has a different digit than h and either upper
--    // is inclusive or upper is bigger than the result of rounding up.
--    bool can_round_up =
--        (upper_delta > 0) ||    //
--        ((upper_delta == 0) &&  //
--         (inclusive || ((ui + 1) < ((int32_t)(upper.num_digits)))));
--
--    // If we can round either way, round to nearest. If we can round only one
--    // way, do it. If we can't round, continue the loop.
--    if (can_round_down) {
--      if (can_round_up) {
--        wuffs_base__private_implementation__high_prec_dec__round_nearest(
--            h, hi + 1);
--        return;
--      } else {
--        wuffs_base__private_implementation__high_prec_dec__round_down(h,
--                                                                      hi + 1);
--        return;
--      }
--    } else {
--      if (can_round_up) {
--        wuffs_base__private_implementation__high_prec_dec__round_up(h, hi + 1);
--        return;
--      }
-+// wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast_return_cusp
-+// copies the previous byte (the one immediately before *ptr_iop_w), copying 8
-+// byte chunks at a time. Each chunk contains 8 repetitions of the same byte.
-+// It also returns the cusp: a byte pair (as a u16le) being the last byte of
-+// and next byte after the copied history.
-+//
-+// In terms of number of bytes copied, length is rounded up to a multiple of 8.
-+// As a special case, a zero length rounds up to 8 (even though 0 is already a
-+// multiple of 8), since there is always at least one 8 byte chunk copied.
-+//
-+// In terms of advancing *ptr_iop_w, length is not rounded up.
-+//
-+// The caller needs to prove that:
-+//  - length       >= 1
-+//  - (length + 8) <= (io2_w      - *ptr_iop_w)
-+//  - distance     == 1
-+//  - distance     <= (*ptr_iop_w - io0_w)
-+static inline uint32_t  //
-+wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast_return_cusp(
-+    uint8_t** ptr_iop_w,
-+    uint8_t* io0_w,
-+    uint8_t* io2_w,
-+    uint32_t length,
-+    uint32_t distance) {
-+  uint8_t* p = *ptr_iop_w;
-+  uint8_t* q = p - distance;
-+  uint64_t x = p[-1];
-+  x |= x << 8;
-+  x |= x << 16;
-+  x |= x << 32;
-+  uint32_t n = length;
-+  while (1) {
-+    wuffs_base__poke_u64le__no_bounds_check(p, x);
-+    if (n <= 8) {
-+      p += n;
-+      q += n;
-+      break;
-     }
-+    p += 8;
-+    q += 8;
-+    n -= 8;
-   }
-+  *ptr_iop_w = p;
-+  return (uint32_t)wuffs_base__peek_u16le__no_bounds_check(q - 1);
- }
- 
--// --------
--
--// wuffs_base__private_implementation__parse_number_f64_eisel_lemire produces
--// the IEEE 754 double-precision value for an exact mantissa and base-10
--// exponent. For example:
--//  - when parsing "12345.678e+02", man is 12345678 and exp10 is -1.
--//  - when parsing "-12", man is 12 and exp10 is 0. Processing the leading
--//    minus sign is the responsibility of the caller, not this function.
-+// wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast
-+// is like the
-+// wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast function
-+// above, but copies 8 byte chunks at a time.
- //
--// On success, it returns a non-negative int64_t such that the low 63 bits hold
--// the 11-bit exponent and 52-bit mantissa.
-+// In terms of number of bytes copied, length is rounded up to a multiple of 8.
-+// As a special case, a zero length rounds up to 8 (even though 0 is already a
-+// multiple of 8), since there is always at least one 8 byte chunk copied.
- //
--// On failure, it returns a negative value.
-+// In terms of advancing *ptr_iop_w, length is not rounded up.
- //
--// The algorithm is based on an original idea by Michael Eisel that was refined
--// by Daniel Lemire. See
--// https://lemire.me/blog/2020/03/10/fast-float-parsing-in-practice/
--// and
--// https://nigeltao.github.io/blog/2020/eisel-lemire.html
-+// The caller needs to prove that:
-+//  - length       >= 1
-+//  - (length + 8) <= (io2_w      - *ptr_iop_w)
-+//  - distance     >= 8
-+//  - distance     <= (*ptr_iop_w - io0_w)
-+static inline uint32_t  //
-+wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast(
-+    uint8_t** ptr_iop_w,
-+    uint8_t* io0_w,
-+    uint8_t* io2_w,
-+    uint32_t length,
-+    uint32_t distance) {
-+  uint8_t* p = *ptr_iop_w;
-+  uint8_t* q = p - distance;
-+  uint32_t n = length;
-+  while (1) {
-+    memcpy(p, q, 8);
-+    if (n <= 8) {
-+      p += n;
-+      break;
-+    }
-+    p += 8;
-+    q += 8;
-+    n -= 8;
-+  }
-+  *ptr_iop_w = p;
-+  return length;
-+}
-+
-+// wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast_return_cusp
-+// is like the
-+// wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast function
-+// above, but copies 8 byte chunks at a time. It also returns the cusp: a byte
-+// pair (as a u16le) being the last byte of and next byte after the copied
-+// history.
- //
--// Preconditions:
--//  - man is non-zero.
--//  - exp10 is in the range [-307 ..= 288], the same range of the
--//    wuffs_base__private_implementation__powers_of_10 array.
-+// In terms of number of bytes copied, length is rounded up to a multiple of 8.
-+// As a special case, a zero length rounds up to 8 (even though 0 is already a
-+// multiple of 8), since there is always at least one 8 byte chunk copied.
- //
--// The exp10 range (and the fact that man is in the range [1 ..= UINT64_MAX],
--// approximately [1 ..= 1.85e+19]) means that (man * (10 ** exp10)) is in the
--// range [1e-307 ..= 1.85e+307]. This is entirely within the range of normal
--// (neither subnormal nor non-finite) f64 values: DBL_MIN and DBL_MAX are
--// approximately 2.23e–308 and 1.80e+308.
--static int64_t  //
--wuffs_base__private_implementation__parse_number_f64_eisel_lemire(
--    uint64_t man,
--    int32_t exp10) {
--  // Look up the (possibly truncated) base-2 representation of (10 ** exp10).
--  // The look-up table was constructed so that it is already normalized: the
--  // table entry's mantissa's MSB (most significant bit) is on.
--  const uint64_t* po10 =
--      &wuffs_base__private_implementation__powers_of_10[exp10 + 307][0];
-+// In terms of advancing *ptr_iop_w, length is not rounded up.
-+//
-+// The caller needs to prove that:
-+//  - length       >= 1
-+//  - (length + 8) <= (io2_w      - *ptr_iop_w)
-+//  - distance     >= 8
-+//  - distance     <= (*ptr_iop_w - io0_w)
-+static inline uint32_t  //
-+wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast_return_cusp(
-+    uint8_t** ptr_iop_w,
-+    uint8_t* io0_w,
-+    uint8_t* io2_w,
-+    uint32_t length,
-+    uint32_t distance) {
-+  uint8_t* p = *ptr_iop_w;
-+  uint8_t* q = p - distance;
-+  uint32_t n = length;
-+  while (1) {
-+    memcpy(p, q, 8);
-+    if (n <= 8) {
-+      p += n;
-+      q += n;
-+      break;
-+    }
-+    p += 8;
-+    q += 8;
-+    n -= 8;
-+  }
-+  *ptr_iop_w = p;
-+  return (uint32_t)wuffs_base__peek_u16le__no_bounds_check(q - 1);
-+}
- 
--  // Normalize the man argument. The (man != 0) precondition means that a
--  // non-zero bit exists.
--  uint32_t clz = wuffs_base__count_leading_zeroes_u64(man);
--  man <<= clz;
-+static inline uint32_t  //
-+wuffs_private_impl__io_writer__limited_copy_u32_from_reader(
-+    uint8_t** ptr_iop_w,
-+    uint8_t* io2_w,
-+    uint32_t length,
-+    const uint8_t** ptr_iop_r,
-+    const uint8_t* io2_r) {
-+  uint8_t* iop_w = *ptr_iop_w;
-+  size_t n = length;
-+  if (n > ((size_t)(io2_w - iop_w))) {
-+    n = (size_t)(io2_w - iop_w);
-+  }
-+  const uint8_t* iop_r = *ptr_iop_r;
-+  if (n > ((size_t)(io2_r - iop_r))) {
-+    n = (size_t)(io2_r - iop_r);
-+  }
-+  if (n > 0) {
-+    memmove(iop_w, iop_r, n);
-+    *ptr_iop_w += n;
-+    *ptr_iop_r += n;
-+  }
-+  return (uint32_t)(n);
-+}
- 
--  // Calculate the return value's base-2 exponent. We might tweak it by ±1
--  // later, but its initial value comes from a linear scaling of exp10,
--  // converting from power-of-10 to power-of-2, and adjusting by clz.
--  //
--  // The magic constants are:
--  //  - 1087 = 1023 + 64. The 1023 is the f64 exponent bias. The 64 is because
--  //    the look-up table uses 64-bit mantissas.
--  //  - 217706 is such that the ratio 217706 / 65536 ≈ 3.321930 is close enough
--  //    (over the practical range of exp10) to log(10) / log(2) ≈ 3.321928.
--  //  - 65536 = 1<<16 is arbitrary but a power of 2, so division is a shift.
--  //
--  // Equality of the linearly-scaled value and the actual power-of-2, over the
--  // range of exp10 arguments that this function accepts, is confirmed by
--  // script/print-mpb-powers-of-10.go
--  uint64_t ret_exp2 =
--      ((uint64_t)(((217706 * exp10) >> 16) + 1087)) - ((uint64_t)clz);
-+static inline uint32_t  //
-+wuffs_private_impl__io_writer__limited_copy_u32_from_slice(
-+    uint8_t** ptr_iop_w,
-+    uint8_t* io2_w,
-+    uint32_t length,
-+    wuffs_base__slice_u8 src) {
-+  uint8_t* iop_w = *ptr_iop_w;
-+  size_t n = src.len;
-+  if (n > length) {
-+    n = length;
-+  }
-+  if (n > ((size_t)(io2_w - iop_w))) {
-+    n = (size_t)(io2_w - iop_w);
-+  }
-+  if (n > 0) {
-+    memmove(iop_w, src.ptr, n);
-+    *ptr_iop_w += n;
-+  }
-+  return (uint32_t)(n);
-+}
- 
--  // Multiply the two mantissas. Normalization means that both mantissas are at
--  // least (1<<63), so the 128-bit product must be at least (1<<126). The high
--  // 64 bits of the product, x_hi, must therefore be at least (1<<62).
--  //
--  // As a consequence, x_hi has either 0 or 1 leading zeroes. Shifting x_hi
--  // right by either 9 or 10 bits (depending on x_hi's MSB) will therefore
--  // leave the top 10 MSBs (bits 54 ..= 63) off and the 11th MSB (bit 53) on.
--  wuffs_base__multiply_u64__output x = wuffs_base__multiply_u64(man, po10[1]);
--  uint64_t x_hi = x.hi;
--  uint64_t x_lo = x.lo;
-+static inline wuffs_base__io_buffer*  //
-+wuffs_private_impl__io_writer__set(wuffs_base__io_buffer* b,
-+                                   uint8_t** ptr_iop_w,
-+                                   uint8_t** ptr_io0_w,
-+                                   uint8_t** ptr_io1_w,
-+                                   uint8_t** ptr_io2_w,
-+                                   wuffs_base__slice_u8 data,
-+                                   uint64_t history_position) {
-+  b->data = data;
-+  b->meta.wi = 0;
-+  b->meta.ri = 0;
-+  b->meta.pos = history_position;
-+  b->meta.closed = false;
- 
--  // Before we shift right by at least 9 bits, recall that the look-up table
--  // entry was possibly truncated. We have so far only calculated a lower bound
--  // for the product (man * e), where e is (10 ** exp10). The upper bound would
--  // add a further (man * 1) to the 128-bit product, which overflows the lower
--  // 64-bit limb if ((x_lo + man) < man).
--  //
--  // If overflow occurs, that adds 1 to x_hi. Since we're about to shift right
--  // by at least 9 bits, that carried 1 can be ignored unless the higher 64-bit
--  // limb's low 9 bits are all on.
--  //
--  // For example, parsing "9999999999999999999" will take the if-true branch
--  // here, since:
--  //  - x_hi = 0x4563918244F3FFFF
--  //  - x_lo = 0x8000000000000000
--  //  - man  = 0x8AC7230489E7FFFF
--  if (((x_hi & 0x1FF) == 0x1FF) && ((x_lo + man) < man)) {
--    // Refine our calculation of (man * e). Before, our approximation of e used
--    // a "low resolution" 64-bit mantissa. Now use a "high resolution" 128-bit
--    // mantissa. We've already calculated x = (man * bits_0_to_63_incl_of_e).
--    // Now calculate y = (man * bits_64_to_127_incl_of_e).
--    wuffs_base__multiply_u64__output y = wuffs_base__multiply_u64(man, po10[0]);
--    uint64_t y_hi = y.hi;
--    uint64_t y_lo = y.lo;
-+  *ptr_iop_w = data.ptr;
-+  *ptr_io0_w = data.ptr;
-+  *ptr_io1_w = data.ptr;
-+  *ptr_io2_w = data.ptr + data.len;
- 
--    // Merge the 128-bit x and 128-bit y, which overlap by 64 bits, to
--    // calculate the 192-bit product of the 64-bit man by the 128-bit e.
--    // As we exit this if-block, we only care about the high 128 bits
--    // (merged_hi and merged_lo) of that 192-bit product.
--    //
--    // For example, parsing "1.234e-45" will take the if-true branch here,
--    // since:
--    //  - x_hi = 0x70B7E3696DB29FFF
--    //  - x_lo = 0xE040000000000000
--    //  - y_hi = 0x33718BBEAB0E0D7A
--    //  - y_lo = 0xA880000000000000
--    uint64_t merged_hi = x_hi;
--    uint64_t merged_lo = x_lo + y_hi;
--    if (merged_lo < x_lo) {
--      merged_hi++;  // Carry the overflow bit.
--    }
-+  return b;
-+}
- 
--    // The "high resolution" approximation of e is still a lower bound. Once
--    // again, see if the upper bound is large enough to produce a different
--    // result. This time, if it does, give up instead of reaching for an even
--    // more precise approximation to e.
--    //
--    // This three-part check is similar to the two-part check that guarded the
--    // if block that we're now in, but it has an extra term for the middle 64
--    // bits (checking that adding 1 to merged_lo would overflow).
--    //
--    // For example, parsing "5.9604644775390625e-8" will take the if-true
--    // branch here, since:
--    //  - merged_hi = 0x7FFFFFFFFFFFFFFF
--    //  - merged_lo = 0xFFFFFFFFFFFFFFFF
--    //  - y_lo      = 0x4DB3FFC120988200
--    //  - man       = 0xD3C21BCECCEDA100
--    if (((merged_hi & 0x1FF) == 0x1FF) && ((merged_lo + 1) == 0) &&
--        (y_lo + man < man)) {
--      return -1;
--    }
-+// ---------------- I/O (Utility)
- 
--    // Replace the 128-bit x with merged.
--    x_hi = merged_hi;
--    x_lo = merged_lo;
--  }
-+#define wuffs_base__utility__empty_io_reader wuffs_base__empty_io_reader
-+#define wuffs_base__utility__empty_io_writer wuffs_base__empty_io_writer
- 
--  // As mentioned above, shifting x_hi right by either 9 or 10 bits will leave
--  // the top 10 MSBs (bits 54 ..= 63) off and the 11th MSB (bit 53) on. If the
--  // MSB (before shifting) was on, adjust ret_exp2 for the larger shift.
--  //
--  // Having bit 53 on (and higher bits off) means that ret_mantissa is a 54-bit
--  // number.
--  uint64_t msb = x_hi >> 63;
--  uint64_t ret_mantissa = x_hi >> (msb + 9);
--  ret_exp2 -= 1 ^ msb;
-+// ---------------- Tokens
- 
--  // IEEE 754 rounds to-nearest with ties rounded to-even. Rounding to-even can
--  // be tricky. If we're half-way between two exactly representable numbers
--  // (x's low 73 bits are zero and the next 2 bits that matter are "01"), give
--  // up instead of trying to pick the winner.
--  //
--  // Technically, we could tighten the condition by changing "73" to "73 or 74,
--  // depending on msb", but a flat "73" is simpler.
--  //
--  // For example, parsing "1e+23" will take the if-true branch here, since:
--  //  - x_hi          = 0x54B40B1F852BDA00
--  //  - ret_mantissa  = 0x002A5A058FC295ED
--  if ((x_lo == 0) && ((x_hi & 0x1FF) == 0) && ((ret_mantissa & 3) == 1)) {
--    return -1;
--  }
-+// ---------------- Tokens (Utility)
- 
--  // If we're not halfway then it's rounding to-nearest. Starting with a 54-bit
--  // number, carry the lowest bit (bit 0) up if it's on. Regardless of whether
--  // it was on or off, shifting right by one then produces a 53-bit number. If
--  // carrying up overflowed, shift again.
--  ret_mantissa += ret_mantissa & 1;
--  ret_mantissa >>= 1;
--  // This if block is equivalent to (but benchmarks slightly faster than) the
--  // following branchless form:
--  //    uint64_t overflow_adjustment = ret_mantissa >> 53;
--  //    ret_mantissa >>= overflow_adjustment;
--  //    ret_exp2 += overflow_adjustment;
--  //
--  // For example, parsing "7.2057594037927933e+16" will take the if-true
--  // branch here, since:
--  //  - x_hi          = 0x7FFFFFFFFFFFFE80
--  //  - ret_mantissa  = 0x0020000000000000
--  if ((ret_mantissa >> 53) > 0) {
--    ret_mantissa >>= 1;
--    ret_exp2++;
--  }
-+// ---------------- Memory Allocation
- 
--  // Starting with a 53-bit number, IEEE 754 double-precision normal numbers
--  // have an implicit mantissa bit. Mask that away and keep the low 52 bits.
--  ret_mantissa &= 0x000FFFFFFFFFFFFF;
-+// ---------------- Images
- 
--  // Pack the bits and return.
--  return ((int64_t)(ret_mantissa | (ret_exp2 << 52)));
--}
-+WUFFS_BASE__MAYBE_STATIC uint64_t  //
-+wuffs_base__pixel_swizzler__limited_swizzle_u32_interleaved_from_reader(
-+    const wuffs_base__pixel_swizzler* p,
-+    uint32_t up_to_num_pixels,
-+    wuffs_base__slice_u8 dst,
-+    wuffs_base__slice_u8 dst_palette,
-+    const uint8_t** ptr_iop_r,
-+    const uint8_t* io2_r);
- 
--// --------
-+WUFFS_BASE__MAYBE_STATIC uint64_t  //
-+wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
-+    const wuffs_base__pixel_swizzler* p,
-+    wuffs_base__slice_u8 dst,
-+    wuffs_base__slice_u8 dst_palette,
-+    const uint8_t** ptr_iop_r,
-+    const uint8_t* io2_r);
- 
--static wuffs_base__result_f64  //
--wuffs_base__private_implementation__parse_number_f64_special(
--    wuffs_base__slice_u8 s,
--    uint32_t options) {
--  do {
--    if (options & WUFFS_BASE__PARSE_NUMBER_FXX__REJECT_INF_AND_NAN) {
--      goto fail;
--    }
-+WUFFS_BASE__MAYBE_STATIC uint64_t  //
-+wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(
-+    const wuffs_base__pixel_swizzler* p,
-+    wuffs_base__slice_u8 dst,
-+    wuffs_base__slice_u8 dst_palette,
-+    uint64_t num_pixels);
- 
--    uint8_t* p = s.ptr;
--    uint8_t* q = s.ptr + s.len;
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status  //
-+wuffs_base__pixel_swizzler__swizzle_ycck(
-+    const wuffs_base__pixel_swizzler* p,
-+    wuffs_base__pixel_buffer* dst,
-+    wuffs_base__slice_u8 dst_palette,
-+    uint32_t x_min_incl,
-+    uint32_t x_max_excl,
-+    uint32_t y_min_incl,
-+    uint32_t y_max_excl,
-+    wuffs_base__slice_u8 src0,
-+    wuffs_base__slice_u8 src1,
-+    wuffs_base__slice_u8 src2,
-+    wuffs_base__slice_u8 src3,
-+    uint32_t width0,
-+    uint32_t width1,
-+    uint32_t width2,
-+    uint32_t width3,
-+    uint32_t height0,
-+    uint32_t height1,
-+    uint32_t height2,
-+    uint32_t height3,
-+    uint32_t stride0,
-+    uint32_t stride1,
-+    uint32_t stride2,
-+    uint32_t stride3,
-+    uint8_t h0,
-+    uint8_t h1,
-+    uint8_t h2,
-+    uint8_t h3,
-+    uint8_t v0,
-+    uint8_t v1,
-+    uint8_t v2,
-+    uint8_t v3,
-+    bool is_rgb_or_cmyk,
-+    bool triangle_filter_for_2to1,
-+    wuffs_base__slice_u8 scratch_buffer_2k);
- 
--    for (; (p < q) && (*p == '_'); p++) {
--    }
--    if (p >= q) {
--      goto fail;
--    }
-+// ---------------- Images (Utility)
- 
--    // Parse sign.
--    bool negative = false;
--    do {
--      if (*p == '+') {
--        p++;
--      } else if (*p == '-') {
--        negative = true;
--        p++;
--      } else {
--        break;
--      }
--      for (; (p < q) && (*p == '_'); p++) {
--      }
--    } while (0);
--    if (p >= q) {
--      goto fail;
--    }
-+#define wuffs_base__utility__make_pixel_format wuffs_base__make_pixel_format
- 
--    bool nan = false;
--    switch (p[0]) {
--      case 'I':
--      case 'i':
--        if (((q - p) < 3) ||                     //
--            ((p[1] != 'N') && (p[1] != 'n')) ||  //
--            ((p[2] != 'F') && (p[2] != 'f'))) {
--          goto fail;
--        }
--        p += 3;
-+// ---------------- String Conversions
- 
--        if ((p >= q) || (*p == '_')) {
--          break;
--        } else if (((q - p) < 5) ||                     //
--                   ((p[0] != 'I') && (p[0] != 'i')) ||  //
--                   ((p[1] != 'N') && (p[1] != 'n')) ||  //
--                   ((p[2] != 'I') && (p[2] != 'i')) ||  //
--                   ((p[3] != 'T') && (p[3] != 't')) ||  //
--                   ((p[4] != 'Y') && (p[4] != 'y'))) {
--          goto fail;
--        }
--        p += 5;
-+// ---------------- Unicode and UTF-8
- 
--        if ((p >= q) || (*p == '_')) {
--          break;
--        }
--        goto fail;
-+// ----------------
- 
--      case 'N':
--      case 'n':
--        if (((q - p) < 3) ||                     //
--            ((p[1] != 'A') && (p[1] != 'a')) ||  //
--            ((p[2] != 'N') && (p[2] != 'n'))) {
--          goto fail;
--        }
--        p += 3;
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
-+    defined(WUFFS_CONFIG__MODULE__BASE__CORE)
- 
--        if ((p >= q) || (*p == '_')) {
--          nan = true;
--          break;
--        }
--        goto fail;
-+const uint8_t wuffs_private_impl__low_bits_mask__u8[8] = {
-+    0x00, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F,
-+};
- 
--      default:
--        goto fail;
--    }
-+const uint16_t wuffs_private_impl__low_bits_mask__u16[16] = {
-+    0x0000, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F, 0x003F, 0x007F,
-+    0x00FF, 0x01FF, 0x03FF, 0x07FF, 0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF,
-+};
- 
--    // Finish.
--    for (; (p < q) && (*p == '_'); p++) {
--    }
--    if (p != q) {
--      goto fail;
--    }
--    wuffs_base__result_f64 ret;
--    ret.status.repr = NULL;
--    ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(
--        (nan ? 0x7FFFFFFFFFFFFFFF : 0x7FF0000000000000) |
--        (negative ? 0x8000000000000000 : 0));
--    return ret;
--  } while (0);
-+const uint32_t wuffs_private_impl__low_bits_mask__u32[32] = {
-+    0x00000000, 0x00000001, 0x00000003, 0x00000007, 0x0000000F, 0x0000001F,
-+    0x0000003F, 0x0000007F, 0x000000FF, 0x000001FF, 0x000003FF, 0x000007FF,
-+    0x00000FFF, 0x00001FFF, 0x00003FFF, 0x00007FFF, 0x0000FFFF, 0x0001FFFF,
-+    0x0003FFFF, 0x0007FFFF, 0x000FFFFF, 0x001FFFFF, 0x003FFFFF, 0x007FFFFF,
-+    0x00FFFFFF, 0x01FFFFFF, 0x03FFFFFF, 0x07FFFFFF, 0x0FFFFFFF, 0x1FFFFFFF,
-+    0x3FFFFFFF, 0x7FFFFFFF,
-+};
- 
--fail:
--  do {
--    wuffs_base__result_f64 ret;
--    ret.status.repr = wuffs_base__error__bad_argument;
--    ret.value = 0;
--    return ret;
--  } while (0);
--}
-+const uint64_t wuffs_private_impl__low_bits_mask__u64[64] = {
-+    0x0000000000000000, 0x0000000000000001, 0x0000000000000003,
-+    0x0000000000000007, 0x000000000000000F, 0x000000000000001F,
-+    0x000000000000003F, 0x000000000000007F, 0x00000000000000FF,
-+    0x00000000000001FF, 0x00000000000003FF, 0x00000000000007FF,
-+    0x0000000000000FFF, 0x0000000000001FFF, 0x0000000000003FFF,
-+    0x0000000000007FFF, 0x000000000000FFFF, 0x000000000001FFFF,
-+    0x000000000003FFFF, 0x000000000007FFFF, 0x00000000000FFFFF,
-+    0x00000000001FFFFF, 0x00000000003FFFFF, 0x00000000007FFFFF,
-+    0x0000000000FFFFFF, 0x0000000001FFFFFF, 0x0000000003FFFFFF,
-+    0x0000000007FFFFFF, 0x000000000FFFFFFF, 0x000000001FFFFFFF,
-+    0x000000003FFFFFFF, 0x000000007FFFFFFF, 0x00000000FFFFFFFF,
-+    0x00000001FFFFFFFF, 0x00000003FFFFFFFF, 0x00000007FFFFFFFF,
-+    0x0000000FFFFFFFFF, 0x0000001FFFFFFFFF, 0x0000003FFFFFFFFF,
-+    0x0000007FFFFFFFFF, 0x000000FFFFFFFFFF, 0x000001FFFFFFFFFF,
-+    0x000003FFFFFFFFFF, 0x000007FFFFFFFFFF, 0x00000FFFFFFFFFFF,
-+    0x00001FFFFFFFFFFF, 0x00003FFFFFFFFFFF, 0x00007FFFFFFFFFFF,
-+    0x0000FFFFFFFFFFFF, 0x0001FFFFFFFFFFFF, 0x0003FFFFFFFFFFFF,
-+    0x0007FFFFFFFFFFFF, 0x000FFFFFFFFFFFFF, 0x001FFFFFFFFFFFFF,
-+    0x003FFFFFFFFFFFFF, 0x007FFFFFFFFFFFFF, 0x00FFFFFFFFFFFFFF,
-+    0x01FFFFFFFFFFFFFF, 0x03FFFFFFFFFFFFFF, 0x07FFFFFFFFFFFFFF,
-+    0x0FFFFFFFFFFFFFFF, 0x1FFFFFFFFFFFFFFF, 0x3FFFFFFFFFFFFFFF,
-+    0x7FFFFFFFFFFFFFFF,
-+};
- 
--WUFFS_BASE__MAYBE_STATIC wuffs_base__result_f64  //
--wuffs_base__private_implementation__high_prec_dec__to_f64(
--    wuffs_base__private_implementation__high_prec_dec* h,
--    uint32_t options) {
--  do {
--    // powers converts decimal powers of 10 to binary powers of 2. For example,
--    // (10000 >> 13) is 1. It stops before the elements exceed 60, also known
--    // as WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL.
--    //
--    // This rounds down (1<<13 is a lower bound for 1e4). Adding 1 to the array
--    // element value rounds up (1<<14 is an upper bound for 1e4) while staying
--    // at or below WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL.
--    //
--    // When starting in the range [1e+1 .. 1e+2] (i.e. h->decimal_point == +2),
--    // powers[2] == 6 and so:
--    //  - Right shifting by 6+0 produces the range [10/64 .. 100/64] =
--    //    [0.156250 .. 1.56250]. The resultant h->decimal_point is +0 or +1.
--    //  - Right shifting by 6+1 produces the range [10/128 .. 100/128] =
--    //    [0.078125 .. 0.78125]. The resultant h->decimal_point is -1 or -0.
--    //
--    // When starting in the range [1e-3 .. 1e-2] (i.e. h->decimal_point == -2),
--    // powers[2] == 6 and so:
--    //  - Left shifting by 6+0 produces the range [0.001*64 .. 0.01*64] =
--    //    [0.064 .. 0.64]. The resultant h->decimal_point is -1 or -0.
--    //  - Left shifting by 6+1 produces the range [0.001*128 .. 0.01*128] =
--    //    [0.128 .. 1.28]. The resultant h->decimal_point is +0 or +1.
--    //
--    // Thus, when targeting h->decimal_point being +0 or +1, use (powers[n]+0)
--    // when right shifting but (powers[n]+1) when left shifting.
--    static const uint32_t num_powers = 19;
--    static const uint8_t powers[19] = {
--        0,  3,  6,  9,  13, 16, 19, 23, 26, 29,  //
--        33, 36, 39, 43, 46, 49, 53, 56, 59,      //
--    };
-+const uint32_t wuffs_private_impl__pixel_format__bits_per_channel[16] = {
-+    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
-+    0x08, 0x0A, 0x0C, 0x10, 0x18, 0x20, 0x30, 0x40,
-+};
- 
--    // Handle zero and obvious extremes. The largest and smallest positive
--    // finite f64 values are approximately 1.8e+308 and 4.9e-324.
--    if ((h->num_digits == 0) || (h->decimal_point < -326)) {
--      goto zero;
--    } else if (h->decimal_point > 310) {
--      goto infinity;
--    }
-+const char wuffs_base__note__i_o_redirect[] = "@base: I/O redirect";
-+const char wuffs_base__note__end_of_data[] = "@base: end of data";
-+const char wuffs_base__note__metadata_reported[] = "@base: metadata reported";
-+const char wuffs_base__suspension__even_more_information[] = "$base: even more information";
-+const char wuffs_base__suspension__mispositioned_read[] = "$base: mispositioned read";
-+const char wuffs_base__suspension__mispositioned_write[] = "$base: mispositioned write";
-+const char wuffs_base__suspension__short_read[] = "$base: short read";
-+const char wuffs_base__suspension__short_workbuf[] = "$base: short workbuf";
-+const char wuffs_base__suspension__short_write[] = "$base: short write";
-+const char wuffs_base__error__bad_i_o_position[] = "#base: bad I/O position";
-+const char wuffs_base__error__bad_argument_length_too_short[] = "#base: bad argument (length too short)";
-+const char wuffs_base__error__bad_argument[] = "#base: bad argument";
-+const char wuffs_base__error__bad_call_sequence[] = "#base: bad call sequence";
-+const char wuffs_base__error__bad_data[] = "#base: bad data";
-+const char wuffs_base__error__bad_receiver[] = "#base: bad receiver";
-+const char wuffs_base__error__bad_restart[] = "#base: bad restart";
-+const char wuffs_base__error__bad_sizeof_receiver[] = "#base: bad sizeof receiver";
-+const char wuffs_base__error__bad_vtable[] = "#base: bad vtable";
-+const char wuffs_base__error__bad_workbuf_length[] = "#base: bad workbuf length";
-+const char wuffs_base__error__bad_wuffs_version[] = "#base: bad wuffs version";
-+const char wuffs_base__error__cannot_return_a_suspension[] = "#base: cannot return a suspension";
-+const char wuffs_base__error__disabled_by_wuffs_config_dst_pixel_format_enable_allowlist[] = "#base: disabled by WUFFS_CONFIG__DST_PIXEL_FORMAT__ENABLE_ALLOWLIST";
-+const char wuffs_base__error__disabled_by_previous_error[] = "#base: disabled by previous error";
-+const char wuffs_base__error__initialize_falsely_claimed_already_zeroed[] = "#base: initialize falsely claimed already zeroed";
-+const char wuffs_base__error__initialize_not_called[] = "#base: initialize not called";
-+const char wuffs_base__error__insufficient_history[] = "#base: insufficient history";
-+const char wuffs_base__error__interleaved_coroutine_calls[] = "#base: interleaved coroutine calls";
-+const char wuffs_base__error__no_more_information[] = "#base: no more information";
-+const char wuffs_base__error__not_enough_data[] = "#base: not enough data";
-+const char wuffs_base__error__out_of_bounds[] = "#base: out of bounds";
-+const char wuffs_base__error__unsupported_image_dimension[] = "#base: unsupported image dimension";
-+const char wuffs_base__error__unsupported_method[] = "#base: unsupported method";
-+const char wuffs_base__error__unsupported_option[] = "#base: unsupported option";
-+const char wuffs_base__error__unsupported_pixel_swizzler_option[] = "#base: unsupported pixel swizzler option";
-+const char wuffs_base__error__too_much_data[] = "#base: too much data";
- 
--    // Try the fast Eisel-Lemire algorithm again. Calculating the (man, exp10)
--    // pair from the high_prec_dec h is more correct but slower than the
--    // approach taken in wuffs_base__parse_number_f64. The latter is optimized
--    // for the common cases (e.g. assuming no underscores or a leading '+'
--    // sign) rather than the full set of cases allowed by the Wuffs API.
--    //
--    // When we have 19 or fewer mantissa digits, run Eisel-Lemire once (trying
--    // for an exact result). When we have more than 19 mantissa digits, run it
--    // twice to get a lower and upper bound. We still have an exact result
--    // (within f64's rounding margin) if both bounds are equal (and valid).
--    uint32_t i_max = h->num_digits;
--    if (i_max > 19) {
--      i_max = 19;
--    }
--    int32_t exp10 = h->decimal_point - ((int32_t)i_max);
--    if ((-307 <= exp10) && (exp10 <= 288)) {
--      uint64_t man = 0;
--      uint32_t i;
--      for (i = 0; i < i_max; i++) {
--        man = (10 * man) + h->digits[i];
--      }
--      while (man != 0) {  // The 'while' is just an 'if' that we can 'break'.
--        int64_t r0 =
--            wuffs_base__private_implementation__parse_number_f64_eisel_lemire(
--                man + 0, exp10);
--        if (r0 < 0) {
--          break;
--        } else if (h->num_digits > 19) {
--          int64_t r1 =
--              wuffs_base__private_implementation__parse_number_f64_eisel_lemire(
--                  man + 1, exp10);
--          if (r1 != r0) {
--            break;
--          }
--        }
--        wuffs_base__result_f64 ret;
--        ret.status.repr = NULL;
--        ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(
--            ((uint64_t)r0) | (((uint64_t)(h->negative)) << 63));
--        return ret;
--      }
--    }
-+const char wuffs_base__hasher_u32__vtable_name[] = "{vtable}wuffs_base__hasher_u32";
-+const char wuffs_base__hasher_u64__vtable_name[] = "{vtable}wuffs_base__hasher_u64";
-+const char wuffs_base__hasher_bitvec256__vtable_name[] = "{vtable}wuffs_base__hasher_bitvec256";
-+const char wuffs_base__image_decoder__vtable_name[] = "{vtable}wuffs_base__image_decoder";
-+const char wuffs_base__io_transformer__vtable_name[] = "{vtable}wuffs_base__io_transformer";
-+const char wuffs_base__token_decoder__vtable_name[] = "{vtable}wuffs_base__token_decoder";
- 
--    // When Eisel-Lemire fails, fall back to Simple Decimal Conversion. See
--    // https://nigeltao.github.io/blog/2020/parse-number-f64-simple.html
--    //
--    // Scale by powers of 2 until we're in the range [0.1 .. 10]. Equivalently,
--    // that h->decimal_point is +0 or +1.
--    //
--    // First we shift right while at or above 10...
--    const int32_t f64_bias = -1023;
--    int32_t exp2 = 0;
--    while (h->decimal_point > 1) {
--      uint32_t n = (uint32_t)(+h->decimal_point);
--      uint32_t shift =
--          (n < num_powers)
--              ? powers[n]
--              : WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL;
--
--      wuffs_base__private_implementation__high_prec_dec__small_rshift(h, shift);
--      if (h->decimal_point <
--          -WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) {
--        goto zero;
--      }
--      exp2 += (int32_t)shift;
--    }
--    // ...then we shift left while below 0.1.
--    while (h->decimal_point < 0) {
--      uint32_t shift;
--      uint32_t n = (uint32_t)(-h->decimal_point);
--      shift = (n < num_powers)
--                  // The +1 is per "when targeting h->decimal_point being +0 or
--                  // +1... when left shifting" in the powers comment above.
--                  ? (powers[n] + 1)
--                  : WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL;
-+#endif  // !defined(WUFFS_CONFIG__MODULES) ||
-+        // defined(WUFFS_CONFIG__MODULE__BASE)  ||
-+        // defined(WUFFS_CONFIG__MODULE__BASE__CORE)
- 
--      wuffs_base__private_implementation__high_prec_dec__small_lshift(h, shift);
--      if (h->decimal_point >
--          +WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) {
--        goto infinity;
--      }
--      exp2 -= (int32_t)shift;
--    }
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
-+    defined(WUFFS_CONFIG__MODULE__BASE__INTERFACES)
- 
--    // To get from "in the range [0.1 .. 10]" to "in the range [1 .. 2]" (which
--    // will give us our exponent in base-2), the mantissa's first 3 digits will
--    // determine the final left shift, equal to 52 (the number of explicit f64
--    // bits) plus an additional adjustment.
--    int man3 = (100 * h->digits[0]) +
--               ((h->num_digits > 1) ? (10 * h->digits[1]) : 0) +
--               ((h->num_digits > 2) ? h->digits[2] : 0);
--    int32_t additional_lshift = 0;
--    if (h->decimal_point == 0) {  // The value is in [0.1 .. 1].
--      if (man3 < 125) {
--        additional_lshift = +4;
--      } else if (man3 < 250) {
--        additional_lshift = +3;
--      } else if (man3 < 500) {
--        additional_lshift = +2;
--      } else {
--        additional_lshift = +1;
--      }
--    } else {  // The value is in [1 .. 10].
--      if (man3 < 200) {
--        additional_lshift = -0;
--      } else if (man3 < 400) {
--        additional_lshift = -1;
--      } else if (man3 < 800) {
--        additional_lshift = -2;
--      } else {
--        additional_lshift = -3;
--      }
--    }
--    exp2 -= additional_lshift;
--    uint32_t final_lshift = (uint32_t)(52 + additional_lshift);
-+// ---------------- Interface Definitions.
- 
--    // The minimum normal exponent is (f64_bias + 1).
--    while ((f64_bias + 1) > exp2) {
--      uint32_t n = (uint32_t)((f64_bias + 1) - exp2);
--      if (n > WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL) {
--        n = WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL;
--      }
--      wuffs_base__private_implementation__high_prec_dec__small_rshift(h, n);
--      exp2 += (int32_t)n;
--    }
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_base__hasher_u32__checksum_u32(
-+    const wuffs_base__hasher_u32* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
- 
--    // Check for overflow.
--    if ((exp2 - f64_bias) >= 0x07FF) {  // (1 << 11) - 1.
--      goto infinity;
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) {
-+      const wuffs_base__hasher_u32__func_ptrs* func_ptrs =
-+          (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->checksum_u32)(self);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-     }
-+    v++;
-+  }
- 
--    // Extract 53 bits for the mantissa (in base-2).
--    wuffs_base__private_implementation__high_prec_dec__small_lshift(
--        h, final_lshift);
--    uint64_t man2 =
--        wuffs_base__private_implementation__high_prec_dec__rounded_integer(h);
-+  return 0;
-+}
- 
--    // Rounding might have added one bit. If so, shift and re-check overflow.
--    if ((man2 >> 53) != 0) {
--      man2 >>= 1;
--      exp2++;
--      if ((exp2 - f64_bias) >= 0x07FF) {  // (1 << 11) - 1.
--        goto infinity;
--      }
--    }
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_base__hasher_u32__get_quirk(
-+    const wuffs_base__hasher_u32* self,
-+    uint32_t a_key) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
- 
--    // Handle subnormal numbers.
--    if ((man2 >> 52) == 0) {
--      exp2 = f64_bias;
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) {
-+      const wuffs_base__hasher_u32__func_ptrs* func_ptrs =
-+          (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->get_quirk)(self, a_key);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-     }
-+    v++;
-+  }
- 
--    // Pack the bits and return.
--    uint64_t exp2_bits =
--        (uint64_t)((exp2 - f64_bias) & 0x07FF);              // (1 << 11) - 1.
--    uint64_t bits = (man2 & 0x000FFFFFFFFFFFFF) |            // (1 << 52) - 1.
--                    (exp2_bits << 52) |                      //
--                    (h->negative ? 0x8000000000000000 : 0);  // (1 << 63).
--
--    wuffs_base__result_f64 ret;
--    ret.status.repr = NULL;
--    ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(bits);
--    return ret;
--  } while (0);
--
--zero:
--  do {
--    uint64_t bits = h->negative ? 0x8000000000000000 : 0;
-+  return 0;
-+}
- 
--    wuffs_base__result_f64 ret;
--    ret.status.repr = NULL;
--    ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(bits);
--    return ret;
--  } while (0);
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_base__hasher_u32__set_quirk(
-+    wuffs_base__hasher_u32* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+            ? wuffs_base__error__disabled_by_previous_error
-+            : wuffs_base__error__initialize_not_called);
-+  }
- 
--infinity:
--  do {
--    if (options & WUFFS_BASE__PARSE_NUMBER_FXX__REJECT_INF_AND_NAN) {
--      wuffs_base__result_f64 ret;
--      ret.status.repr = wuffs_base__error__bad_argument;
--      ret.value = 0;
--      return ret;
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) {
-+      const wuffs_base__hasher_u32__func_ptrs* func_ptrs =
-+          (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->set_quirk)(self, a_key, a_value);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-     }
-+    v++;
-+  }
- 
--    uint64_t bits = h->negative ? 0xFFF0000000000000 : 0x7FF0000000000000;
--
--    wuffs_base__result_f64 ret;
--    ret.status.repr = NULL;
--    ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(bits);
--    return ret;
--  } while (0);
-+  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
- }
- 
--static inline bool  //
--wuffs_base__private_implementation__is_decimal_digit(uint8_t c) {
--  return ('0' <= c) && (c <= '9');
--}
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_base__hasher_u32__update(
-+    wuffs_base__hasher_u32* self,
-+    wuffs_base__slice_u8 a_x) {
-+  if (!self) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_empty_struct();
-+  }
- 
--WUFFS_BASE__MAYBE_STATIC wuffs_base__result_f64  //
--wuffs_base__parse_number_f64(wuffs_base__slice_u8 s, uint32_t options) {
--  // In practice, almost all "dd.ddddE±xxx" numbers can be represented
--  // losslessly by a uint64_t mantissa "dddddd" and an int32_t base-10
--  // exponent, adjusting "xxx" for the position (if present) of the decimal
--  // separator '.' or ','.
--  //
--  // This (u64 man, i32 exp10) data structure is superficially similar to the
--  // "Do It Yourself Floating Point" type from Loitsch (†), but the exponent
--  // here is base-10, not base-2.
--  //
--  // If s's number fits in a (man, exp10), parse that pair with the
--  // Eisel-Lemire algorithm. If not, or if Eisel-Lemire fails, parsing s with
--  // the fallback algorithm is slower but comprehensive.
--  //
--  // † "Printing Floating-Point Numbers Quickly and Accurately with Integers"
--  // (https://www.cs.tufts.edu/~nr/cs257/archive/florian-loitsch/printf.pdf).
--  // Florian Loitsch is also the primary contributor to
--  // https://github.com/google/double-conversion
--  do {
--    // Calculating that (man, exp10) pair needs to stay within s's bounds.
--    // Provided that s isn't extremely long, work on a NUL-terminated copy of
--    // s's contents. The NUL byte isn't a valid part of "±dd.ddddE±xxx".
--    //
--    // As the pointer p walks the contents, it's faster to repeatedly check "is
--    // *p a valid digit" than "is p within bounds and *p a valid digit".
--    if (s.len >= 256) {
--      goto fallback;
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) {
-+      const wuffs_base__hasher_u32__func_ptrs* func_ptrs =
-+          (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->update)(self, a_x);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-     }
--    uint8_t z[256];
--    memcpy(&z[0], s.ptr, s.len);
--    z[s.len] = 0;
--    const uint8_t* p = &z[0];
-+    v++;
-+  }
- 
--    // Look for a leading minus sign. Technically, we could also look for an
--    // optional plus sign, but the "script/process-json-numbers.c with -p"
--    // benchmark is noticably slower if we do. It's optional and, in practice,
--    // usually absent. Let the fallback catch it.
--    bool negative = (*p == '-');
--    if (negative) {
--      p++;
--    }
-+  return wuffs_base__make_empty_struct();
-+}
- 
--    // After walking "dd.dddd", comparing p later with p now will produce the
--    // number of "d"s and "."s.
--    const uint8_t* const start_of_digits_ptr = p;
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_base__hasher_u32__update_u32(
-+    wuffs_base__hasher_u32* self,
-+    wuffs_base__slice_u8 a_x) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return 0;
-+  }
- 
--    // Walk the "d"s before a '.', 'E', NUL byte, etc. If it starts with '0',
--    // it must be a single '0'. If it starts with a non-zero decimal digit, it
--    // can be a sequence of decimal digits.
--    //
--    // Update the man variable during the walk. It's OK if man overflows now.
--    // We'll detect that later.
--    uint64_t man;
--    if (*p == '0') {
--      man = 0;
--      p++;
--      if (wuffs_base__private_implementation__is_decimal_digit(*p)) {
--        goto fallback;
--      }
--    } else if (wuffs_base__private_implementation__is_decimal_digit(*p)) {
--      man = ((uint8_t)(*p - '0'));
--      p++;
--      for (; wuffs_base__private_implementation__is_decimal_digit(*p); p++) {
--        man = (10 * man) + ((uint8_t)(*p - '0'));
--      }
--    } else {
--      goto fallback;
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) {
-+      const wuffs_base__hasher_u32__func_ptrs* func_ptrs =
-+          (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->update_u32)(self, a_x);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-     }
-+    v++;
-+  }
- 
--    // Walk the "d"s after the optional decimal separator ('.' or ','),
--    // updating the man and exp10 variables.
--    int32_t exp10 = 0;
--    if (*p ==
--        ((options & WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
--             ? ','
--             : '.')) {
--      p++;
--      const uint8_t* first_after_separator_ptr = p;
--      if (!wuffs_base__private_implementation__is_decimal_digit(*p)) {
--        goto fallback;
--      }
--      man = (10 * man) + ((uint8_t)(*p - '0'));
--      p++;
--      for (; wuffs_base__private_implementation__is_decimal_digit(*p); p++) {
--        man = (10 * man) + ((uint8_t)(*p - '0'));
--      }
--      exp10 = ((int32_t)(first_after_separator_ptr - p));
--    }
-+  return 0;
-+}
- 
--    // Count the number of digits:
--    //  - for an input of "314159",  digit_count is 6.
--    //  - for an input of "3.14159", digit_count is 7.
--    //
--    // This is off-by-one if there is a decimal separator. That's OK for now.
--    // We'll correct for that later. The "script/process-json-numbers.c with
--    // -p" benchmark is noticably slower if we try to correct for that now.
--    uint32_t digit_count = (uint32_t)(p - start_of_digits_ptr);
-+// --------
- 
--    // Update exp10 for the optional exponent, starting with 'E' or 'e'.
--    if ((*p | 0x20) == 'e') {
--      p++;
--      int32_t exp_sign = +1;
--      if (*p == '-') {
--        p++;
--        exp_sign = -1;
--      } else if (*p == '+') {
--        p++;
--      }
--      if (!wuffs_base__private_implementation__is_decimal_digit(*p)) {
--        goto fallback;
--      }
--      int32_t exp_num = ((uint8_t)(*p - '0'));
--      p++;
--      // The rest of the exp_num walking has a peculiar control flow but, once
--      // again, the "script/process-json-numbers.c with -p" benchmark is
--      // sensitive to alternative formulations.
--      if (wuffs_base__private_implementation__is_decimal_digit(*p)) {
--        exp_num = (10 * exp_num) + ((uint8_t)(*p - '0'));
--        p++;
--      }
--      if (wuffs_base__private_implementation__is_decimal_digit(*p)) {
--        exp_num = (10 * exp_num) + ((uint8_t)(*p - '0'));
--        p++;
--      }
--      while (wuffs_base__private_implementation__is_decimal_digit(*p)) {
--        if (exp_num > 0x1000000) {
--          goto fallback;
--        }
--        exp_num = (10 * exp_num) + ((uint8_t)(*p - '0'));
--        p++;
--      }
--      exp10 += exp_sign * exp_num;
--    }
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_base__hasher_u64__checksum_u64(
-+    const wuffs_base__hasher_u64* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
- 
--    // The Wuffs API is that the original slice has no trailing data. It also
--    // allows underscores, which we don't catch here but the fallback should.
--    if (p != &z[s.len]) {
--      goto fallback;
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) {
-+      const wuffs_base__hasher_u64__func_ptrs* func_ptrs =
-+          (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->checksum_u64)(self);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-     }
-+    v++;
-+  }
- 
--    // Check that the uint64_t typed man variable has not overflowed, based on
--    // digit_count.
--    //
--    // For reference:
--    //   - (1 << 63) is  9223372036854775808, which has 19 decimal digits.
--    //   - (1 << 64) is 18446744073709551616, which has 20 decimal digits.
--    //   - 19 nines,  9999999999999999999, is  0x8AC7230489E7FFFF, which has 64
--    //     bits and 16 hexadecimal digits.
--    //   - 20 nines, 99999999999999999999, is 0x56BC75E2D630FFFFF, which has 67
--    //     bits and 17 hexadecimal digits.
--    if (digit_count > 19) {
--      // Even if we have more than 19 pseudo-digits, it's not yet definitely an
--      // overflow. Recall that digit_count might be off-by-one (too large) if
--      // there's a decimal separator. It will also over-report the number of
--      // meaningful digits if the input looks something like "0.000dddExxx".
--      //
--      // We adjust by the number of leading '0's and '.'s and re-compare to 19.
--      // Once again, technically, we could skip ','s too, but that perturbs the
--      // "script/process-json-numbers.c with -p" benchmark.
--      const uint8_t* q = start_of_digits_ptr;
--      for (; (*q == '0') || (*q == '.'); q++) {
--      }
--      digit_count -= (uint32_t)(q - start_of_digits_ptr);
--      if (digit_count > 19) {
--        goto fallback;
--      }
--    }
-+  return 0;
-+}
- 
--    // The wuffs_base__private_implementation__parse_number_f64_eisel_lemire
--    // preconditions include that exp10 is in the range [-307 ..= 288].
--    if ((exp10 < -307) || (288 < exp10)) {
--      goto fallback;
--    }
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_base__hasher_u64__get_quirk(
-+    const wuffs_base__hasher_u64* self,
-+    uint32_t a_key) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
- 
--    // If both man and (10 ** exp10) are exactly representable by a double, we
--    // don't need to run the Eisel-Lemire algorithm.
--    if ((-22 <= exp10) && (exp10 <= 22) && ((man >> 53) == 0)) {
--      double d = (double)man;
--      if (exp10 >= 0) {
--        d *= wuffs_base__private_implementation__f64_powers_of_10[+exp10];
--      } else {
--        d /= wuffs_base__private_implementation__f64_powers_of_10[-exp10];
--      }
--      wuffs_base__result_f64 ret;
--      ret.status.repr = NULL;
--      ret.value = negative ? -d : +d;
--      return ret;
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) {
-+      const wuffs_base__hasher_u64__func_ptrs* func_ptrs =
-+          (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->get_quirk)(self, a_key);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-     }
-+    v++;
-+  }
- 
--    // The wuffs_base__private_implementation__parse_number_f64_eisel_lemire
--    // preconditions include that man is non-zero. Parsing "0" should be caught
--    // by the "If both man and (10 ** exp10)" above, but "0e99" might not.
--    if (man == 0) {
--      goto fallback;
--    }
-+  return 0;
-+}
- 
--    // Our man and exp10 are in range. Run the Eisel-Lemire algorithm.
--    int64_t r =
--        wuffs_base__private_implementation__parse_number_f64_eisel_lemire(
--            man, exp10);
--    if (r < 0) {
--      goto fallback;
--    }
--    wuffs_base__result_f64 ret;
--    ret.status.repr = NULL;
--    ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(
--        ((uint64_t)r) | (((uint64_t)negative) << 63));
--    return ret;
--  } while (0);
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_base__hasher_u64__set_quirk(
-+    wuffs_base__hasher_u64* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+            ? wuffs_base__error__disabled_by_previous_error
-+            : wuffs_base__error__initialize_not_called);
-+  }
- 
--fallback:
--  do {
--    wuffs_base__private_implementation__high_prec_dec h;
--    wuffs_base__status status =
--        wuffs_base__private_implementation__high_prec_dec__parse(&h, s,
--                                                                 options);
--    if (status.repr) {
--      return wuffs_base__private_implementation__parse_number_f64_special(
--          s, options);
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) {
-+      const wuffs_base__hasher_u64__func_ptrs* func_ptrs =
-+          (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->set_quirk)(self, a_key, a_value);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-     }
--    return wuffs_base__private_implementation__high_prec_dec__to_f64(&h,
--                                                                     options);
--  } while (0);
--}
-+    v++;
-+  }
- 
--// --------
-+  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
-+}
- 
--static inline size_t  //
--wuffs_base__private_implementation__render_inf(wuffs_base__slice_u8 dst,
--                                               bool neg,
--                                               uint32_t options) {
--  if (neg) {
--    if (dst.len < 4) {
--      return 0;
--    }
--    wuffs_base__poke_u32le__no_bounds_check(dst.ptr, 0x666E492D);  // '-Inf'le.
--    return 4;
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_base__hasher_u64__update(
-+    wuffs_base__hasher_u64* self,
-+    wuffs_base__slice_u8 a_x) {
-+  if (!self) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_empty_struct();
-   }
- 
--  if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) {
--    if (dst.len < 4) {
--      return 0;
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) {
-+      const wuffs_base__hasher_u64__func_ptrs* func_ptrs =
-+          (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->update)(self, a_x);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-     }
--    wuffs_base__poke_u32le__no_bounds_check(dst.ptr, 0x666E492B);  // '+Inf'le.
--    return 4;
-+    v++;
-   }
- 
--  if (dst.len < 3) {
--    return 0;
--  }
--  wuffs_base__poke_u24le__no_bounds_check(dst.ptr, 0x666E49);  // 'Inf'le.
--  return 3;
-+  return wuffs_base__make_empty_struct();
- }
- 
--static inline size_t  //
--wuffs_base__private_implementation__render_nan(wuffs_base__slice_u8 dst) {
--  if (dst.len < 3) {
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_base__hasher_u64__update_u64(
-+    wuffs_base__hasher_u64* self,
-+    wuffs_base__slice_u8 a_x) {
-+  if (!self) {
-     return 0;
-   }
--  wuffs_base__poke_u24le__no_bounds_check(dst.ptr, 0x4E614E);  // 'NaN'le.
--  return 3;
--}
--
--static size_t  //
--wuffs_base__private_implementation__high_prec_dec__render_exponent_absent(
--    wuffs_base__slice_u8 dst,
--    wuffs_base__private_implementation__high_prec_dec* h,
--    uint32_t precision,
--    uint32_t options) {
--  size_t n = (h->negative ||
--              (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN))
--                 ? 1
--                 : 0;
--  if (h->decimal_point <= 0) {
--    n += 1;
--  } else {
--    n += (size_t)(h->decimal_point);
--  }
--  if (precision > 0) {
--    n += precision + 1;  // +1 for the '.'.
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return 0;
-   }
- 
--  // Don't modify dst if the formatted number won't fit.
--  if (n > dst.len) {
--    return 0;
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__hasher_u64__vtable_name) {
-+      const wuffs_base__hasher_u64__func_ptrs* func_ptrs =
-+          (const wuffs_base__hasher_u64__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->update_u64)(self, a_x);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-+    }
-+    v++;
-   }
- 
--  // Align-left or align-right.
--  uint8_t* ptr = (options & WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT)
--                     ? &dst.ptr[dst.len - n]
--                     : &dst.ptr[0];
-+  return 0;
-+}
- 
--  // Leading "±".
--  if (h->negative) {
--    *ptr++ = '-';
--  } else if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) {
--    *ptr++ = '+';
--  }
-+// --------
- 
--  // Integral digits.
--  if (h->decimal_point <= 0) {
--    *ptr++ = '0';
--  } else {
--    uint32_t m =
--        wuffs_base__u32__min(h->num_digits, (uint32_t)(h->decimal_point));
--    uint32_t i = 0;
--    for (; i < m; i++) {
--      *ptr++ = (uint8_t)('0' | h->digits[i]);
--    }
--    for (; i < (uint32_t)(h->decimal_point); i++) {
--      *ptr++ = '0';
--    }
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__bitvec256
-+wuffs_base__hasher_bitvec256__checksum_bitvec256(
-+    const wuffs_base__hasher_bitvec256* self) {
-+  if (!self) {
-+    return wuffs_base__utility__make_bitvec256(0u, 0u, 0u, 0u);
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__make_bitvec256(0u, 0u, 0u, 0u);
-   }
- 
--  // Separator and then fractional digits.
--  if (precision > 0) {
--    *ptr++ =
--        (options & WUFFS_BASE__RENDER_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
--            ? ','
--            : '.';
--    uint32_t i = 0;
--    for (; i < precision; i++) {
--      uint32_t j = ((uint32_t)(h->decimal_point)) + i;
--      *ptr++ = (uint8_t)('0' | ((j < h->num_digits) ? h->digits[j] : 0));
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__hasher_bitvec256__vtable_name) {
-+      const wuffs_base__hasher_bitvec256__func_ptrs* func_ptrs =
-+          (const wuffs_base__hasher_bitvec256__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->checksum_bitvec256)(self);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-     }
-+    v++;
-   }
- 
--  return n;
-+  return wuffs_base__utility__make_bitvec256(0u, 0u, 0u, 0u);
- }
- 
--static size_t  //
--wuffs_base__private_implementation__high_prec_dec__render_exponent_present(
--    wuffs_base__slice_u8 dst,
--    wuffs_base__private_implementation__high_prec_dec* h,
--    uint32_t precision,
--    uint32_t options) {
--  int32_t exp = 0;
--  if (h->num_digits > 0) {
--    exp = h->decimal_point - 1;
--  }
--  bool negative_exp = exp < 0;
--  if (negative_exp) {
--    exp = -exp;
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_base__hasher_bitvec256__get_quirk(
-+    const wuffs_base__hasher_bitvec256* self,
-+    uint32_t a_key) {
-+  if (!self) {
-+    return 0;
-   }
--
--  size_t n = (h->negative ||
--              (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN))
--                 ? 4
--                 : 3;  // Mininum 3 bytes: first digit and then "e±".
--  if (precision > 0) {
--    n += precision + 1;  // +1 for the '.'.
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-   }
--  n += (exp < 100) ? 2 : 3;
- 
--  // Don't modify dst if the formatted number won't fit.
--  if (n > dst.len) {
--    return 0;
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__hasher_bitvec256__vtable_name) {
-+      const wuffs_base__hasher_bitvec256__func_ptrs* func_ptrs =
-+          (const wuffs_base__hasher_bitvec256__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->get_quirk)(self, a_key);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-+    }
-+    v++;
-   }
- 
--  // Align-left or align-right.
--  uint8_t* ptr = (options & WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT)
--                     ? &dst.ptr[dst.len - n]
--                     : &dst.ptr[0];
-+  return 0;
-+}
- 
--  // Leading "±".
--  if (h->negative) {
--    *ptr++ = '-';
--  } else if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) {
--    *ptr++ = '+';
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_base__hasher_bitvec256__set_quirk(
-+    wuffs_base__hasher_bitvec256* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
--
--  // Integral digit.
--  if (h->num_digits > 0) {
--    *ptr++ = (uint8_t)('0' | h->digits[0]);
--  } else {
--    *ptr++ = '0';
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+            ? wuffs_base__error__disabled_by_previous_error
-+            : wuffs_base__error__initialize_not_called);
-   }
- 
--  // Separator and then fractional digits.
--  if (precision > 0) {
--    *ptr++ =
--        (options & WUFFS_BASE__RENDER_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
--            ? ','
--            : '.';
--    uint32_t i = 1;
--    uint32_t j = wuffs_base__u32__min(h->num_digits, precision + 1);
--    for (; i < j; i++) {
--      *ptr++ = (uint8_t)('0' | h->digits[i]);
--    }
--    for (; i <= precision; i++) {
--      *ptr++ = '0';
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__hasher_bitvec256__vtable_name) {
-+      const wuffs_base__hasher_bitvec256__func_ptrs* func_ptrs =
-+          (const wuffs_base__hasher_bitvec256__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->set_quirk)(self, a_key, a_value);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-     }
-+    v++;
-   }
- 
--  // Exponent: "e±" and then 2 or 3 digits.
--  *ptr++ = 'e';
--  *ptr++ = negative_exp ? '-' : '+';
--  if (exp < 10) {
--    *ptr++ = '0';
--    *ptr++ = (uint8_t)('0' | exp);
--  } else if (exp < 100) {
--    *ptr++ = (uint8_t)('0' | (exp / 10));
--    *ptr++ = (uint8_t)('0' | (exp % 10));
--  } else {
--    int32_t e = exp / 100;
--    exp -= e * 100;
--    *ptr++ = (uint8_t)('0' | e);
--    *ptr++ = (uint8_t)('0' | (exp / 10));
--    *ptr++ = (uint8_t)('0' | (exp % 10));
--  }
--
--  return n;
-+  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
- }
- 
--WUFFS_BASE__MAYBE_STATIC size_t  //
--wuffs_base__render_number_f64(wuffs_base__slice_u8 dst,
--                              double x,
--                              uint32_t precision,
--                              uint32_t options) {
--  // Decompose x (64 bits) into negativity (1 bit), base-2 exponent (11 bits
--  // with a -1023 bias) and mantissa (52 bits).
--  uint64_t bits = wuffs_base__ieee_754_bit_representation__from_f64_to_u64(x);
--  bool neg = (bits >> 63) != 0;
--  int32_t exp2 = ((int32_t)(bits >> 52)) & 0x7FF;
--  uint64_t man = bits & 0x000FFFFFFFFFFFFFul;
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_base__hasher_bitvec256__update(
-+    wuffs_base__hasher_bitvec256* self,
-+    wuffs_base__slice_u8 a_x) {
-+  if (!self) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_empty_struct();
-+  }
- 
--  // Apply the exponent bias and set the implicit top bit of the mantissa,
--  // unless x is subnormal. Also take care of Inf and NaN.
--  if (exp2 == 0x7FF) {
--    if (man != 0) {
--      return wuffs_base__private_implementation__render_nan(dst);
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__hasher_bitvec256__vtable_name) {
-+      const wuffs_base__hasher_bitvec256__func_ptrs* func_ptrs =
-+          (const wuffs_base__hasher_bitvec256__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->update)(self, a_x);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-     }
--    return wuffs_base__private_implementation__render_inf(dst, neg, options);
--  } else if (exp2 == 0) {
--    exp2 = -1022;
--  } else {
--    exp2 -= 1023;
--    man |= 0x0010000000000000ul;
-+    v++;
-   }
- 
--  // Ensure that precision isn't too large.
--  if (precision > 4095) {
--    precision = 4095;
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__bitvec256
-+wuffs_base__hasher_bitvec256__update_bitvec256(
-+    wuffs_base__hasher_bitvec256* self,
-+    wuffs_base__slice_u8 a_x) {
-+  if (!self) {
-+    return wuffs_base__utility__make_bitvec256(0u, 0u, 0u, 0u);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__utility__make_bitvec256(0u, 0u, 0u, 0u);
-   }
- 
--  // Convert from the (neg, exp2, man) tuple to an HPD.
--  wuffs_base__private_implementation__high_prec_dec h;
--  wuffs_base__private_implementation__high_prec_dec__assign(&h, man, neg);
--  if (h.num_digits > 0) {
--    wuffs_base__private_implementation__high_prec_dec__lshift(
--        &h, exp2 - 52);  // 52 mantissa bits.
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__hasher_bitvec256__vtable_name) {
-+      const wuffs_base__hasher_bitvec256__func_ptrs* func_ptrs =
-+          (const wuffs_base__hasher_bitvec256__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->update_bitvec256)(self, a_x);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-+    }
-+    v++;
-   }
- 
--  // Handle the "%e" and "%f" formats.
--  switch (options & (WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ABSENT |
--                     WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_PRESENT)) {
--    case WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ABSENT:  // The "%"f" format.
--      if (options & WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION) {
--        wuffs_base__private_implementation__high_prec_dec__round_just_enough(
--            &h, exp2, man);
--        int32_t p = ((int32_t)(h.num_digits)) - h.decimal_point;
--        precision = ((uint32_t)(wuffs_base__i32__max(0, p)));
--      } else {
--        wuffs_base__private_implementation__high_prec_dec__round_nearest(
--            &h, ((int32_t)precision) + h.decimal_point);
--      }
--      return wuffs_base__private_implementation__high_prec_dec__render_exponent_absent(
--          dst, &h, precision, options);
-+  return wuffs_base__utility__make_bitvec256(0u, 0u, 0u, 0u);
-+}
- 
--    case WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_PRESENT:  // The "%e" format.
--      if (options & WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION) {
--        wuffs_base__private_implementation__high_prec_dec__round_just_enough(
--            &h, exp2, man);
--        precision = (h.num_digits > 0) ? (h.num_digits - 1) : 0;
--      } else {
--        wuffs_base__private_implementation__high_prec_dec__round_nearest(
--            &h, ((int32_t)precision) + 1);
--      }
--      return wuffs_base__private_implementation__high_prec_dec__render_exponent_present(
--          dst, &h, precision, options);
-+// --------
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_base__image_decoder__decode_frame(
-+    wuffs_base__image_decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+            ? wuffs_base__error__disabled_by_previous_error
-+            : wuffs_base__error__initialize_not_called);
-   }
- 
--  // We have the "%g" format and so precision means the number of significant
--  // digits, not the number of digits after the decimal separator. Perform
--  // rounding and determine whether to use "%e" or "%f".
--  int32_t e_threshold = 0;
--  if (options & WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION) {
--    wuffs_base__private_implementation__high_prec_dec__round_just_enough(
--        &h, exp2, man);
--    precision = h.num_digits;
--    e_threshold = 6;
--  } else {
--    if (precision == 0) {
--      precision = 1;
--    }
--    wuffs_base__private_implementation__high_prec_dec__round_nearest(
--        &h, ((int32_t)precision));
--    e_threshold = ((int32_t)precision);
--    int32_t nd = ((int32_t)(h.num_digits));
--    if ((e_threshold > nd) && (nd >= h.decimal_point)) {
--      e_threshold = nd;
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
-+      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
-+          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->decode_frame)(self, a_dst, a_src, a_blend, a_workbuf, a_opts);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-     }
-+    v++;
-   }
- 
--  // Use the "%e" format if the exponent is large.
--  int32_t e = h.decimal_point - 1;
--  if ((e < -4) || (e_threshold <= e)) {
--    uint32_t p = wuffs_base__u32__min(precision, h.num_digits);
--    return wuffs_base__private_implementation__high_prec_dec__render_exponent_present(
--        dst, &h, (p > 0) ? (p - 1) : 0, options);
-+  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
-+}
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_base__image_decoder__decode_frame_config(
-+    wuffs_base__image_decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+            ? wuffs_base__error__disabled_by_previous_error
-+            : wuffs_base__error__initialize_not_called);
-   }
- 
--  // Use the "%f" format otherwise.
--  int32_t p = ((int32_t)precision);
--  if (p > h.decimal_point) {
--    p = ((int32_t)(h.num_digits));
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
-+      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
-+          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->decode_frame_config)(self, a_dst, a_src);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-+    }
-+    v++;
-   }
--  precision = ((uint32_t)(wuffs_base__i32__max(0, p - h.decimal_point)));
--  return wuffs_base__private_implementation__high_prec_dec__render_exponent_absent(
--      dst, &h, precision, options);
-+
-+  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
- }
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) ||
--        // defined(WUFFS_CONFIG__MODULE__BASE) ||
--        // defined(WUFFS_CONFIG__MODULE__BASE__FLOATCONV)
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_base__image_decoder__decode_image_config(
-+    wuffs_base__image_decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+            ? wuffs_base__error__disabled_by_previous_error
-+            : wuffs_base__error__initialize_not_called);
-+  }
- 
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
--    defined(WUFFS_CONFIG__MODULE__BASE__INTCONV)
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
-+      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
-+          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->decode_image_config)(self, a_dst, a_src);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-+    }
-+    v++;
-+  }
- 
--// ---------------- Integer
-+  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
-+}
- 
--// wuffs_base__parse_number__foo_digits entries are 0x00 for invalid digits,
--// and (0x80 | v) for valid digits, where v is the 4 bit value.
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
-+wuffs_base__image_decoder__frame_dirty_rect(
-+    const wuffs_base__image_decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_rect_ie_u32();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_rect_ie_u32();
-+  }
- 
--static const uint8_t wuffs_base__parse_number__decimal_digits[256] = {
--    // 0     1     2     3     4     5     6     7
--    // 8     9     A     B     C     D     E     F
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x00 ..= 0x07.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x08 ..= 0x0F.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x10 ..= 0x17.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x18 ..= 0x1F.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x20 ..= 0x27.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x28 ..= 0x2F.
--    0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,  // 0x30 ..= 0x37. '0'-'7'.
--    0x88, 0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x38 ..= 0x3F. '8'-'9'.
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
-+      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
-+          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->frame_dirty_rect)(self);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-+    }
-+    v++;
-+  }
- 
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x40 ..= 0x47.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x48 ..= 0x4F.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x50 ..= 0x57.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x58 ..= 0x5F.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x60 ..= 0x67.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x68 ..= 0x6F.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x70 ..= 0x77.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x78 ..= 0x7F.
-+  return wuffs_base__utility__empty_rect_ie_u32();
-+}
- 
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x80 ..= 0x87.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x88 ..= 0x8F.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x90 ..= 0x97.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x98 ..= 0x9F.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xA0 ..= 0xA7.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xA8 ..= 0xAF.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xB0 ..= 0xB7.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xB8 ..= 0xBF.
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_base__image_decoder__get_quirk(
-+    const wuffs_base__image_decoder* self,
-+    uint32_t a_key) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
- 
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xC0 ..= 0xC7.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xC8 ..= 0xCF.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xD0 ..= 0xD7.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xD8 ..= 0xDF.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xE0 ..= 0xE7.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xE8 ..= 0xEF.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xF0 ..= 0xF7.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xF8 ..= 0xFF.
--    // 0     1     2     3     4     5     6     7
--    // 8     9     A     B     C     D     E     F
--};
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
-+      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
-+          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->get_quirk)(self, a_key);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-+    }
-+    v++;
-+  }
- 
--static const uint8_t wuffs_base__parse_number__hexadecimal_digits[256] = {
--    // 0     1     2     3     4     5     6     7
--    // 8     9     A     B     C     D     E     F
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x00 ..= 0x07.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x08 ..= 0x0F.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x10 ..= 0x17.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x18 ..= 0x1F.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x20 ..= 0x27.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x28 ..= 0x2F.
--    0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,  // 0x30 ..= 0x37. '0'-'7'.
--    0x88, 0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x38 ..= 0x3F. '8'-'9'.
-+  return 0;
-+}
- 
--    0x00, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x00,  // 0x40 ..= 0x47. 'A'-'F'.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x48 ..= 0x4F.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x50 ..= 0x57.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x58 ..= 0x5F.
--    0x00, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x00,  // 0x60 ..= 0x67. 'a'-'f'.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x68 ..= 0x6F.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x70 ..= 0x77.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x78 ..= 0x7F.
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_base__image_decoder__num_animation_loops(
-+    const wuffs_base__image_decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
- 
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x80 ..= 0x87.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x88 ..= 0x8F.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x90 ..= 0x97.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x98 ..= 0x9F.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xA0 ..= 0xA7.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xA8 ..= 0xAF.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xB0 ..= 0xB7.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xB8 ..= 0xBF.
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
-+      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
-+          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->num_animation_loops)(self);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-+    }
-+    v++;
-+  }
- 
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xC0 ..= 0xC7.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xC8 ..= 0xCF.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xD0 ..= 0xD7.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xD8 ..= 0xDF.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xE0 ..= 0xE7.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xE8 ..= 0xEF.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xF0 ..= 0xF7.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xF8 ..= 0xFF.
--    // 0     1     2     3     4     5     6     7
--    // 8     9     A     B     C     D     E     F
--};
-+  return 0;
-+}
- 
--static const uint8_t wuffs_base__private_implementation__encode_base16[16] = {
--    0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,  // 0x00 ..= 0x07.
--    0x38, 0x39, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46,  // 0x08 ..= 0x0F.
--};
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_base__image_decoder__num_decoded_frame_configs(
-+    const wuffs_base__image_decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
- 
--// --------
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
-+      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
-+          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->num_decoded_frame_configs)(self);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-+    }
-+    v++;
-+  }
- 
--WUFFS_BASE__MAYBE_STATIC wuffs_base__result_i64  //
--wuffs_base__parse_number_i64(wuffs_base__slice_u8 s, uint32_t options) {
--  uint8_t* p = s.ptr;
--  uint8_t* q = s.ptr + s.len;
-+  return 0;
-+}
- 
--  if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
--    for (; (p < q) && (*p == '_'); p++) {
--    }
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_base__image_decoder__num_decoded_frames(
-+    const wuffs_base__image_decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-   }
- 
--  bool negative = false;
--  if (p >= q) {
--    goto fail_bad_argument;
--  } else if (*p == '-') {
--    p++;
--    negative = true;
--  } else if (*p == '+') {
--    p++;
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
-+      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
-+          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->num_decoded_frames)(self);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-+    }
-+    v++;
-   }
- 
--  do {
--    wuffs_base__result_u64 r = wuffs_base__parse_number_u64(
--        wuffs_base__make_slice_u8(p, (size_t)(q - p)), options);
--    if (r.status.repr != NULL) {
--      wuffs_base__result_i64 ret;
--      ret.status.repr = r.status.repr;
--      ret.value = 0;
--      return ret;
--    } else if (negative) {
--      if (r.value < 0x8000000000000000) {
--        wuffs_base__result_i64 ret;
--        ret.status.repr = NULL;
--        ret.value = -(int64_t)(r.value);
--        return ret;
--      } else if (r.value == 0x8000000000000000) {
--        wuffs_base__result_i64 ret;
--        ret.status.repr = NULL;
--        ret.value = INT64_MIN;
--        return ret;
--      }
--      goto fail_out_of_bounds;
--    } else if (r.value > 0x7FFFFFFFFFFFFFFF) {
--      goto fail_out_of_bounds;
--    } else {
--      wuffs_base__result_i64 ret;
--      ret.status.repr = NULL;
--      ret.value = +(int64_t)(r.value);
--      return ret;
--    }
--  } while (0);
--
--fail_bad_argument:
--  do {
--    wuffs_base__result_i64 ret;
--    ret.status.repr = wuffs_base__error__bad_argument;
--    ret.value = 0;
--    return ret;
--  } while (0);
--
--fail_out_of_bounds:
--  do {
--    wuffs_base__result_i64 ret;
--    ret.status.repr = wuffs_base__error__out_of_bounds;
--    ret.value = 0;
--    return ret;
--  } while (0);
-+  return 0;
- }
- 
--WUFFS_BASE__MAYBE_STATIC wuffs_base__result_u64  //
--wuffs_base__parse_number_u64(wuffs_base__slice_u8 s, uint32_t options) {
--  uint8_t* p = s.ptr;
--  uint8_t* q = s.ptr + s.len;
--
--  if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
--    for (; (p < q) && (*p == '_'); p++) {
--    }
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_base__image_decoder__restart_frame(
-+    wuffs_base__image_decoder* self,
-+    uint64_t a_index,
-+    uint64_t a_io_position) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+            ? wuffs_base__error__disabled_by_previous_error
-+            : wuffs_base__error__initialize_not_called);
-   }
- 
--  if (p >= q) {
--    goto fail_bad_argument;
--
--  } else if (*p == '0') {
--    p++;
--    if (p >= q) {
--      goto ok_zero;
--    }
--    if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
--      if (*p == '_') {
--        p++;
--        for (; p < q; p++) {
--          if (*p != '_') {
--            if (options &
--                WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES) {
--              goto decimal;
--            }
--            goto fail_bad_argument;
--          }
--        }
--        goto ok_zero;
--      }
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
-+      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
-+          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->restart_frame)(self, a_index, a_io_position);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-     }
-+    v++;
-+  }
- 
--    if ((*p == 'x') || (*p == 'X')) {
--      p++;
--      if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
--        for (; (p < q) && (*p == '_'); p++) {
--        }
--      }
--      if (p < q) {
--        goto hexadecimal;
--      }
-+  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
-+}
- 
--    } else if ((*p == 'd') || (*p == 'D')) {
--      p++;
--      if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
--        for (; (p < q) && (*p == '_'); p++) {
--        }
--      }
--      if (p < q) {
--        goto decimal;
--      }
--    }
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_base__image_decoder__set_quirk(
-+    wuffs_base__image_decoder* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+            ? wuffs_base__error__disabled_by_previous_error
-+            : wuffs_base__error__initialize_not_called);
-+  }
- 
--    if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES) {
--      goto decimal;
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
-+      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
-+          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->set_quirk)(self, a_key, a_value);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-     }
--    goto fail_bad_argument;
-+    v++;
-   }
- 
--decimal:
--  do {
--    uint64_t v = wuffs_base__parse_number__decimal_digits[*p++];
--    if (v == 0) {
--      goto fail_bad_argument;
--    }
--    v &= 0x0F;
-+  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
-+}
- 
--    // UINT64_MAX is 18446744073709551615, which is ((10 * max10) + max1).
--    const uint64_t max10 = 1844674407370955161u;
--    const uint8_t max1 = 5;
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_base__image_decoder__set_report_metadata(
-+    wuffs_base__image_decoder* self,
-+    uint32_t a_fourcc,
-+    bool a_report) {
-+  if (!self) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_empty_struct();
-+  }
- 
--    for (; p < q; p++) {
--      if ((*p == '_') &&
--          (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
--        continue;
--      }
--      uint8_t digit = wuffs_base__parse_number__decimal_digits[*p];
--      if (digit == 0) {
--        goto fail_bad_argument;
--      }
--      digit &= 0x0F;
--      if ((v > max10) || ((v == max10) && (digit > max1))) {
--        goto fail_out_of_bounds;
--      }
--      v = (10 * v) + ((uint64_t)(digit));
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
-+      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
-+          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->set_report_metadata)(self, a_fourcc, a_report);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-     }
-+    v++;
-+  }
- 
--    wuffs_base__result_u64 ret;
--    ret.status.repr = NULL;
--    ret.value = v;
--    return ret;
--  } while (0);
-+  return wuffs_base__make_empty_struct();
-+}
- 
--hexadecimal:
--  do {
--    uint64_t v = wuffs_base__parse_number__hexadecimal_digits[*p++];
--    if (v == 0) {
--      goto fail_bad_argument;
--    }
--    v &= 0x0F;
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_base__image_decoder__tell_me_more(
-+    wuffs_base__image_decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__more_information* a_minfo,
-+    wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+            ? wuffs_base__error__disabled_by_previous_error
-+            : wuffs_base__error__initialize_not_called);
-+  }
- 
--    for (; p < q; p++) {
--      if ((*p == '_') &&
--          (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
--        continue;
--      }
--      uint8_t digit = wuffs_base__parse_number__hexadecimal_digits[*p];
--      if (digit == 0) {
--        goto fail_bad_argument;
--      }
--      digit &= 0x0F;
--      if ((v >> 60) != 0) {
--        goto fail_out_of_bounds;
--      }
--      v = (v << 4) | ((uint64_t)(digit));
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
-+      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
-+          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->tell_me_more)(self, a_dst, a_minfo, a_src);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-     }
-+    v++;
-+  }
- 
--    wuffs_base__result_u64 ret;
--    ret.status.repr = NULL;
--    ret.value = v;
--    return ret;
--  } while (0);
-+  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
-+}
- 
--ok_zero:
--  do {
--    wuffs_base__result_u64 ret;
--    ret.status.repr = NULL;
--    ret.value = 0;
--    return ret;
--  } while (0);
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_base__image_decoder__workbuf_len(
-+    const wuffs_base__image_decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
- 
--fail_bad_argument:
--  do {
--    wuffs_base__result_u64 ret;
--    ret.status.repr = wuffs_base__error__bad_argument;
--    ret.value = 0;
--    return ret;
--  } while (0);
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
-+      const wuffs_base__image_decoder__func_ptrs* func_ptrs =
-+          (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->workbuf_len)(self);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-+    }
-+    v++;
-+  }
- 
--fail_out_of_bounds:
--  do {
--    wuffs_base__result_u64 ret;
--    ret.status.repr = wuffs_base__error__out_of_bounds;
--    ret.value = 0;
--    return ret;
--  } while (0);
-+  return wuffs_base__utility__empty_range_ii_u64();
- }
- 
- // --------
- 
--// wuffs_base__render_number__first_hundred contains the decimal encodings of
--// the first one hundred numbers [0 ..= 99].
--static const uint8_t wuffs_base__render_number__first_hundred[200] = {
--    '0', '0', '0', '1', '0', '2', '0', '3', '0', '4',  //
--    '0', '5', '0', '6', '0', '7', '0', '8', '0', '9',  //
--    '1', '0', '1', '1', '1', '2', '1', '3', '1', '4',  //
--    '1', '5', '1', '6', '1', '7', '1', '8', '1', '9',  //
--    '2', '0', '2', '1', '2', '2', '2', '3', '2', '4',  //
--    '2', '5', '2', '6', '2', '7', '2', '8', '2', '9',  //
--    '3', '0', '3', '1', '3', '2', '3', '3', '3', '4',  //
--    '3', '5', '3', '6', '3', '7', '3', '8', '3', '9',  //
--    '4', '0', '4', '1', '4', '2', '4', '3', '4', '4',  //
--    '4', '5', '4', '6', '4', '7', '4', '8', '4', '9',  //
--    '5', '0', '5', '1', '5', '2', '5', '3', '5', '4',  //
--    '5', '5', '5', '6', '5', '7', '5', '8', '5', '9',  //
--    '6', '0', '6', '1', '6', '2', '6', '3', '6', '4',  //
--    '6', '5', '6', '6', '6', '7', '6', '8', '6', '9',  //
--    '7', '0', '7', '1', '7', '2', '7', '3', '7', '4',  //
--    '7', '5', '7', '6', '7', '7', '7', '8', '7', '9',  //
--    '8', '0', '8', '1', '8', '2', '8', '3', '8', '4',  //
--    '8', '5', '8', '6', '8', '7', '8', '8', '8', '9',  //
--    '9', '0', '9', '1', '9', '2', '9', '3', '9', '4',  //
--    '9', '5', '9', '6', '9', '7', '9', '8', '9', '9',  //
--};
--
--static size_t  //
--wuffs_base__private_implementation__render_number_u64(wuffs_base__slice_u8 dst,
--                                                      uint64_t x,
--                                                      uint32_t options,
--                                                      bool neg) {
--  uint8_t buf[WUFFS_BASE__U64__BYTE_LENGTH__MAX_INCL];
--  uint8_t* ptr = &buf[0] + sizeof(buf);
--
--  while (x >= 100) {
--    size_t index = ((size_t)((x % 100) * 2));
--    x /= 100;
--    uint8_t s0 = wuffs_base__render_number__first_hundred[index + 0];
--    uint8_t s1 = wuffs_base__render_number__first_hundred[index + 1];
--    ptr -= 2;
--    ptr[0] = s0;
--    ptr[1] = s1;
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
-+wuffs_base__io_transformer__dst_history_retain_length(
-+    const wuffs_base__io_transformer* self) {
-+  if (!self) {
-+    return wuffs_base__utility__make_optional_u63(false, 0u);
-   }
--
--  if (x < 10) {
--    ptr -= 1;
--    ptr[0] = (uint8_t)('0' + x);
--  } else {
--    size_t index = ((size_t)(x * 2));
--    uint8_t s0 = wuffs_base__render_number__first_hundred[index + 0];
--    uint8_t s1 = wuffs_base__render_number__first_hundred[index + 1];
--    ptr -= 2;
--    ptr[0] = s0;
--    ptr[1] = s1;
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__make_optional_u63(false, 0u);
-   }
- 
--  if (neg) {
--    ptr -= 1;
--    ptr[0] = '-';
--  } else if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) {
--    ptr -= 1;
--    ptr[0] = '+';
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
-+      const wuffs_base__io_transformer__func_ptrs* func_ptrs =
-+          (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->dst_history_retain_length)(self);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-+    }
-+    v++;
-   }
- 
--  size_t n = sizeof(buf) - ((size_t)(ptr - &buf[0]));
--  if (n > dst.len) {
-+  return wuffs_base__utility__make_optional_u63(false, 0u);
-+}
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_base__io_transformer__get_quirk(
-+    const wuffs_base__io_transformer* self,
-+    uint32_t a_key) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-     return 0;
-   }
--  memcpy(dst.ptr + ((options & WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT)
--                        ? (dst.len - n)
--                        : 0),
--         ptr, n);
--  return n;
--}
- 
--WUFFS_BASE__MAYBE_STATIC size_t  //
--wuffs_base__render_number_i64(wuffs_base__slice_u8 dst,
--                              int64_t x,
--                              uint32_t options) {
--  uint64_t u = (uint64_t)x;
--  bool neg = x < 0;
--  if (neg) {
--    u = 1 + ~u;
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
-+      const wuffs_base__io_transformer__func_ptrs* func_ptrs =
-+          (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->get_quirk)(self, a_key);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-+    }
-+    v++;
-   }
--  return wuffs_base__private_implementation__render_number_u64(dst, u, options,
--                                                               neg);
--}
- 
--WUFFS_BASE__MAYBE_STATIC size_t  //
--wuffs_base__render_number_u64(wuffs_base__slice_u8 dst,
--                              uint64_t x,
--                              uint32_t options) {
--  return wuffs_base__private_implementation__render_number_u64(dst, x, options,
--                                                               false);
-+  return 0;
- }
- 
--// ---------------- Base-16
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_base__io_transformer__set_quirk(
-+    wuffs_base__io_transformer* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+            ? wuffs_base__error__disabled_by_previous_error
-+            : wuffs_base__error__initialize_not_called);
-+  }
- 
--WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
--wuffs_base__base_16__decode2(wuffs_base__slice_u8 dst,
--                             wuffs_base__slice_u8 src,
--                             bool src_closed,
--                             uint32_t options) {
--  wuffs_base__transform__output o;
--  size_t src_len2 = src.len / 2;
--  size_t len;
--  if (dst.len < src_len2) {
--    len = dst.len;
--    o.status.repr = wuffs_base__suspension__short_write;
--  } else {
--    len = src_len2;
--    if (!src_closed) {
--      o.status.repr = wuffs_base__suspension__short_read;
--    } else if (src.len & 1) {
--      o.status.repr = wuffs_base__error__bad_data;
--    } else {
--      o.status.repr = NULL;
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
-+      const wuffs_base__io_transformer__func_ptrs* func_ptrs =
-+          (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->set_quirk)(self, a_key, a_value);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-     }
-+    v++;
-   }
- 
--  uint8_t* d = dst.ptr;
--  uint8_t* s = src.ptr;
--  size_t n = len;
-+  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
-+}
- 
--  while (n--) {
--    *d = (uint8_t)((wuffs_base__parse_number__hexadecimal_digits[s[0]] << 4) |
--                   (wuffs_base__parse_number__hexadecimal_digits[s[1]] & 0x0F));
--    d += 1;
--    s += 2;
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_base__io_transformer__transform_io(
-+    wuffs_base__io_transformer* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+            ? wuffs_base__error__disabled_by_previous_error
-+            : wuffs_base__error__initialize_not_called);
-   }
- 
--  o.num_dst = len;
--  o.num_src = len * 2;
--  return o;
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
-+      const wuffs_base__io_transformer__func_ptrs* func_ptrs =
-+          (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->transform_io)(self, a_dst, a_src, a_workbuf);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-+    }
-+    v++;
-+  }
-+
-+  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
- }
- 
--WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
--wuffs_base__base_16__decode4(wuffs_base__slice_u8 dst,
--                             wuffs_base__slice_u8 src,
--                             bool src_closed,
--                             uint32_t options) {
--  wuffs_base__transform__output o;
--  size_t src_len4 = src.len / 4;
--  size_t len = dst.len < src_len4 ? dst.len : src_len4;
--  if (dst.len < src_len4) {
--    len = dst.len;
--    o.status.repr = wuffs_base__suspension__short_write;
--  } else {
--    len = src_len4;
--    if (!src_closed) {
--      o.status.repr = wuffs_base__suspension__short_read;
--    } else if (src.len & 1) {
--      o.status.repr = wuffs_base__error__bad_data;
--    } else {
--      o.status.repr = NULL;
--    }
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_base__io_transformer__workbuf_len(
-+    const wuffs_base__io_transformer* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-   }
- 
--  uint8_t* d = dst.ptr;
--  uint8_t* s = src.ptr;
--  size_t n = len;
--
--  while (n--) {
--    *d = (uint8_t)((wuffs_base__parse_number__hexadecimal_digits[s[2]] << 4) |
--                   (wuffs_base__parse_number__hexadecimal_digits[s[3]] & 0x0F));
--    d += 1;
--    s += 4;
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
-+      const wuffs_base__io_transformer__func_ptrs* func_ptrs =
-+          (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->workbuf_len)(self);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-+    }
-+    v++;
-   }
- 
--  o.num_dst = len;
--  o.num_src = len * 4;
--  return o;
-+  return wuffs_base__utility__empty_range_ii_u64();
- }
- 
--WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
--wuffs_base__base_16__encode2(wuffs_base__slice_u8 dst,
--                             wuffs_base__slice_u8 src,
--                             bool src_closed,
--                             uint32_t options) {
--  wuffs_base__transform__output o;
--  size_t dst_len2 = dst.len / 2;
--  size_t len;
--  if (dst_len2 < src.len) {
--    len = dst_len2;
--    o.status.repr = wuffs_base__suspension__short_write;
--  } else {
--    len = src.len;
--    if (!src_closed) {
--      o.status.repr = wuffs_base__suspension__short_read;
--    } else {
--      o.status.repr = NULL;
--    }
--  }
-+// --------
- 
--  uint8_t* d = dst.ptr;
--  uint8_t* s = src.ptr;
--  size_t n = len;
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_base__token_decoder__decode_tokens(
-+    wuffs_base__token_decoder* self,
-+    wuffs_base__token_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+            ? wuffs_base__error__disabled_by_previous_error
-+            : wuffs_base__error__initialize_not_called);
-+  }
- 
--  while (n--) {
--    uint8_t c = *s;
--    d[0] = wuffs_base__private_implementation__encode_base16[c >> 4];
--    d[1] = wuffs_base__private_implementation__encode_base16[c & 0x0F];
--    d += 2;
--    s += 1;
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__token_decoder__vtable_name) {
-+      const wuffs_base__token_decoder__func_ptrs* func_ptrs =
-+          (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->decode_tokens)(self, a_dst, a_src, a_workbuf);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-+    }
-+    v++;
-   }
- 
--  o.num_dst = len * 2;
--  o.num_src = len;
--  return o;
-+  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
- }
- 
--WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
--wuffs_base__base_16__encode4(wuffs_base__slice_u8 dst,
--                             wuffs_base__slice_u8 src,
--                             bool src_closed,
--                             uint32_t options) {
--  wuffs_base__transform__output o;
--  size_t dst_len4 = dst.len / 4;
--  size_t len;
--  if (dst_len4 < src.len) {
--    len = dst_len4;
--    o.status.repr = wuffs_base__suspension__short_write;
--  } else {
--    len = src.len;
--    if (!src_closed) {
--      o.status.repr = wuffs_base__suspension__short_read;
--    } else {
--      o.status.repr = NULL;
--    }
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_base__token_decoder__get_quirk(
-+    const wuffs_base__token_decoder* self,
-+    uint32_t a_key) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-   }
- 
--  uint8_t* d = dst.ptr;
--  uint8_t* s = src.ptr;
--  size_t n = len;
--
--  while (n--) {
--    uint8_t c = *s;
--    d[0] = '\\';
--    d[1] = 'x';
--    d[2] = wuffs_base__private_implementation__encode_base16[c >> 4];
--    d[3] = wuffs_base__private_implementation__encode_base16[c & 0x0F];
--    d += 4;
--    s += 1;
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__token_decoder__vtable_name) {
-+      const wuffs_base__token_decoder__func_ptrs* func_ptrs =
-+          (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->get_quirk)(self, a_key);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-+    }
-+    v++;
-   }
- 
--  o.num_dst = len * 4;
--  o.num_src = len;
--  return o;
-+  return 0;
- }
- 
--// ---------------- Base-64
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_base__token_decoder__set_quirk(
-+    wuffs_base__token_decoder* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+            ? wuffs_base__error__disabled_by_previous_error
-+            : wuffs_base__error__initialize_not_called);
-+  }
- 
--// The two base-64 alphabets, std and url, differ only in the last two codes.
--//  - std: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
--//  - url: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_"
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__token_decoder__vtable_name) {
-+      const wuffs_base__token_decoder__func_ptrs* func_ptrs =
-+          (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->set_quirk)(self, a_key, a_value);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-+    }
-+    v++;
-+  }
- 
--static const uint8_t wuffs_base__base_64__decode_std[256] = {
--    // 0     1     2     3     4     5     6     7
--    // 8     9     A     B     C     D     E     F
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x00 ..= 0x07.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x08 ..= 0x0F.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x10 ..= 0x17.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x18 ..= 0x1F.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x20 ..= 0x27.
--    0x80, 0x80, 0x80, 0x3E, 0x80, 0x80, 0x80, 0x3F,  // 0x28 ..= 0x2F.
--    0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B,  // 0x30 ..= 0x37.
--    0x3C, 0x3D, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x38 ..= 0x3F.
-+  return wuffs_base__make_status(wuffs_base__error__bad_vtable);
-+}
- 
--    0x80, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,  // 0x40 ..= 0x47.
--    0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E,  // 0x48 ..= 0x4F.
--    0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,  // 0x50 ..= 0x57.
--    0x17, 0x18, 0x19, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x58 ..= 0x5F.
--    0x80, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20,  // 0x60 ..= 0x67.
--    0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,  // 0x68 ..= 0x6F.
--    0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30,  // 0x70 ..= 0x77.
--    0x31, 0x32, 0x33, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x78 ..= 0x7F.
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_base__token_decoder__workbuf_len(
-+    const wuffs_base__token_decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
- 
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x80 ..= 0x87.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x88 ..= 0x8F.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x90 ..= 0x97.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x98 ..= 0x9F.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xA0 ..= 0xA7.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xA8 ..= 0xAF.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xB0 ..= 0xB7.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xB8 ..= 0xBF.
-+  const wuffs_base__vtable* v = &self->private_impl.first_vtable;
-+  int i;
-+  for (i = 0; i < 63; i++) {
-+    if (v->vtable_name == wuffs_base__token_decoder__vtable_name) {
-+      const wuffs_base__token_decoder__func_ptrs* func_ptrs =
-+          (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers);
-+      return (*func_ptrs->workbuf_len)(self);
-+    } else if (v->vtable_name == NULL) {
-+      break;
-+    }
-+    v++;
-+  }
- 
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xC0 ..= 0xC7.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xC8 ..= 0xCF.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xD0 ..= 0xD7.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xD8 ..= 0xDF.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xE0 ..= 0xE7.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xE8 ..= 0xEF.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xF0 ..= 0xF7.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xF8 ..= 0xFF.
--    // 0     1     2     3     4     5     6     7
--    // 8     9     A     B     C     D     E     F
--};
-+  return wuffs_base__utility__empty_range_ii_u64();
-+}
- 
--static const uint8_t wuffs_base__base_64__decode_url[256] = {
--    // 0     1     2     3     4     5     6     7
--    // 8     9     A     B     C     D     E     F
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x00 ..= 0x07.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x08 ..= 0x0F.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x10 ..= 0x17.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x18 ..= 0x1F.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x20 ..= 0x27.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x3E, 0x80, 0x80,  // 0x28 ..= 0x2F.
--    0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B,  // 0x30 ..= 0x37.
--    0x3C, 0x3D, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x38 ..= 0x3F.
-+#endif  // !defined(WUFFS_CONFIG__MODULES) ||
-+        // defined(WUFFS_CONFIG__MODULE__BASE) ||
-+        // defined(WUFFS_CONFIG__MODULE__BASE__INTERFACES)
- 
--    0x80, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,  // 0x40 ..= 0x47.
--    0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E,  // 0x48 ..= 0x4F.
--    0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,  // 0x50 ..= 0x57.
--    0x17, 0x18, 0x19, 0x80, 0x80, 0x80, 0x80, 0x3F,  // 0x58 ..= 0x5F.
--    0x80, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20,  // 0x60 ..= 0x67.
--    0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,  // 0x68 ..= 0x6F.
--    0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30,  // 0x70 ..= 0x77.
--    0x31, 0x32, 0x33, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x78 ..= 0x7F.
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
-+    defined(WUFFS_CONFIG__MODULE__BASE__FLOATCONV)
- 
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x80 ..= 0x87.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x88 ..= 0x8F.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x90 ..= 0x97.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x98 ..= 0x9F.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xA0 ..= 0xA7.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xA8 ..= 0xAF.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xB0 ..= 0xB7.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xB8 ..= 0xBF.
-+// ---------------- IEEE 754 Floating Point
- 
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xC0 ..= 0xC7.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xC8 ..= 0xCF.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xD0 ..= 0xD7.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xD8 ..= 0xDF.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xE0 ..= 0xE7.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xE8 ..= 0xEF.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xF0 ..= 0xF7.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xF8 ..= 0xFF.
--    // 0     1     2     3     4     5     6     7
--    // 8     9     A     B     C     D     E     F
-+// The etc__hpd_left_shift and etc__powers_of_5 tables were printed by
-+// script/print-hpd-left-shift.go. That script has an optional -comments flag,
-+// whose output is not copied here, which prints further detail.
-+//
-+// These tables are used in
-+// wuffs_private_impl__high_prec_dec__lshift_num_new_digits.
-+
-+// wuffs_private_impl__hpd_left_shift[i] encodes the number of new digits
-+// created after multiplying a positive integer by (1 << i): the additional
-+// length in the decimal representation. For example, shifting "234" by 3
-+// (equivalent to multiplying by 8) will produce "1872". Going from a 3-length
-+// string to a 4-length string means that 1 new digit was added (and existing
-+// digits may have changed).
-+//
-+// Shifting by i can add either N or N-1 new digits, depending on whether the
-+// original positive integer compares >= or < to the i'th power of 5 (as 10
-+// equals 2 * 5). Comparison is lexicographic, not numerical.
-+//
-+// For example, shifting by 4 (i.e. multiplying by 16) can add 1 or 2 new
-+// digits, depending on a lexicographic comparison to (5 ** 4), i.e. "625":
-+//  - ("1"      << 4) is "16",       which adds 1 new digit.
-+//  - ("5678"   << 4) is "90848",    which adds 1 new digit.
-+//  - ("624"    << 4) is "9984",     which adds 1 new digit.
-+//  - ("62498"  << 4) is "999968",   which adds 1 new digit.
-+//  - ("625"    << 4) is "10000",    which adds 2 new digits.
-+//  - ("625001" << 4) is "10000016", which adds 2 new digits.
-+//  - ("7008"   << 4) is "112128",   which adds 2 new digits.
-+//  - ("99"     << 4) is "1584",     which adds 2 new digits.
-+//
-+// Thus, when i is 4, N is 2 and (5 ** i) is "625". This etc__hpd_left_shift
-+// array encodes this as:
-+//  - etc__hpd_left_shift[4] is 0x1006 = (2 << 11) | 0x0006.
-+//  - etc__hpd_left_shift[5] is 0x1009 = (? << 11) | 0x0009.
-+// where the ? isn't relevant for i == 4.
-+//
-+// The high 5 bits of etc__hpd_left_shift[i] is N, the higher of the two
-+// possible number of new digits. The low 11 bits are an offset into the
-+// etc__powers_of_5 array (of length 0x051C, so offsets fit in 11 bits). When i
-+// is 4, its offset and the next one is 6 and 9, and etc__powers_of_5[6 .. 9]
-+// is the string "\x06\x02\x05", so the relevant power of 5 is "625".
-+//
-+// Thanks to Ken Thompson for the original idea.
-+static const uint16_t wuffs_private_impl__hpd_left_shift[65] = {
-+    0x0000, 0x0800, 0x0801, 0x0803, 0x1006, 0x1009, 0x100D, 0x1812, 0x1817,
-+    0x181D, 0x2024, 0x202B, 0x2033, 0x203C, 0x2846, 0x2850, 0x285B, 0x3067,
-+    0x3073, 0x3080, 0x388E, 0x389C, 0x38AB, 0x38BB, 0x40CC, 0x40DD, 0x40EF,
-+    0x4902, 0x4915, 0x4929, 0x513E, 0x5153, 0x5169, 0x5180, 0x5998, 0x59B0,
-+    0x59C9, 0x61E3, 0x61FD, 0x6218, 0x6A34, 0x6A50, 0x6A6D, 0x6A8B, 0x72AA,
-+    0x72C9, 0x72E9, 0x7B0A, 0x7B2B, 0x7B4D, 0x8370, 0x8393, 0x83B7, 0x83DC,
-+    0x8C02, 0x8C28, 0x8C4F, 0x9477, 0x949F, 0x94C8, 0x9CF2, 0x051C, 0x051C,
-+    0x051C, 0x051C,
- };
- 
--static const uint8_t wuffs_base__base_64__encode_std[64] = {
--    // 0     1     2     3     4     5     6     7
--    // 8     9     A     B     C     D     E     F
--    0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,  // 0x00 ..= 0x07.
--    0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50,  // 0x08 ..= 0x0F.
--    0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,  // 0x10 ..= 0x17.
--    0x59, 0x5A, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66,  // 0x18 ..= 0x1F.
--    0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E,  // 0x20 ..= 0x27.
--    0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76,  // 0x28 ..= 0x2F.
--    0x77, 0x78, 0x79, 0x7A, 0x30, 0x31, 0x32, 0x33,  // 0x30 ..= 0x37.
--    0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x2B, 0x2F,  // 0x38 ..= 0x3F.
-+// wuffs_private_impl__powers_of_5 contains the powers of 5, concatenated
-+// together: "5", "25", "125", "625", "3125", etc.
-+static const uint8_t wuffs_private_impl__powers_of_5[0x051C] = {
-+    5, 2, 5, 1, 2, 5, 6, 2, 5, 3, 1, 2, 5, 1, 5, 6, 2, 5, 7, 8, 1, 2, 5, 3, 9,
-+    0, 6, 2, 5, 1, 9, 5, 3, 1, 2, 5, 9, 7, 6, 5, 6, 2, 5, 4, 8, 8, 2, 8, 1, 2,
-+    5, 2, 4, 4, 1, 4, 0, 6, 2, 5, 1, 2, 2, 0, 7, 0, 3, 1, 2, 5, 6, 1, 0, 3, 5,
-+    1, 5, 6, 2, 5, 3, 0, 5, 1, 7, 5, 7, 8, 1, 2, 5, 1, 5, 2, 5, 8, 7, 8, 9, 0,
-+    6, 2, 5, 7, 6, 2, 9, 3, 9, 4, 5, 3, 1, 2, 5, 3, 8, 1, 4, 6, 9, 7, 2, 6, 5,
-+    6, 2, 5, 1, 9, 0, 7, 3, 4, 8, 6, 3, 2, 8, 1, 2, 5, 9, 5, 3, 6, 7, 4, 3, 1,
-+    6, 4, 0, 6, 2, 5, 4, 7, 6, 8, 3, 7, 1, 5, 8, 2, 0, 3, 1, 2, 5, 2, 3, 8, 4,
-+    1, 8, 5, 7, 9, 1, 0, 1, 5, 6, 2, 5, 1, 1, 9, 2, 0, 9, 2, 8, 9, 5, 5, 0, 7,
-+    8, 1, 2, 5, 5, 9, 6, 0, 4, 6, 4, 4, 7, 7, 5, 3, 9, 0, 6, 2, 5, 2, 9, 8, 0,
-+    2, 3, 2, 2, 3, 8, 7, 6, 9, 5, 3, 1, 2, 5, 1, 4, 9, 0, 1, 1, 6, 1, 1, 9, 3,
-+    8, 4, 7, 6, 5, 6, 2, 5, 7, 4, 5, 0, 5, 8, 0, 5, 9, 6, 9, 2, 3, 8, 2, 8, 1,
-+    2, 5, 3, 7, 2, 5, 2, 9, 0, 2, 9, 8, 4, 6, 1, 9, 1, 4, 0, 6, 2, 5, 1, 8, 6,
-+    2, 6, 4, 5, 1, 4, 9, 2, 3, 0, 9, 5, 7, 0, 3, 1, 2, 5, 9, 3, 1, 3, 2, 2, 5,
-+    7, 4, 6, 1, 5, 4, 7, 8, 5, 1, 5, 6, 2, 5, 4, 6, 5, 6, 6, 1, 2, 8, 7, 3, 0,
-+    7, 7, 3, 9, 2, 5, 7, 8, 1, 2, 5, 2, 3, 2, 8, 3, 0, 6, 4, 3, 6, 5, 3, 8, 6,
-+    9, 6, 2, 8, 9, 0, 6, 2, 5, 1, 1, 6, 4, 1, 5, 3, 2, 1, 8, 2, 6, 9, 3, 4, 8,
-+    1, 4, 4, 5, 3, 1, 2, 5, 5, 8, 2, 0, 7, 6, 6, 0, 9, 1, 3, 4, 6, 7, 4, 0, 7,
-+    2, 2, 6, 5, 6, 2, 5, 2, 9, 1, 0, 3, 8, 3, 0, 4, 5, 6, 7, 3, 3, 7, 0, 3, 6,
-+    1, 3, 2, 8, 1, 2, 5, 1, 4, 5, 5, 1, 9, 1, 5, 2, 2, 8, 3, 6, 6, 8, 5, 1, 8,
-+    0, 6, 6, 4, 0, 6, 2, 5, 7, 2, 7, 5, 9, 5, 7, 6, 1, 4, 1, 8, 3, 4, 2, 5, 9,
-+    0, 3, 3, 2, 0, 3, 1, 2, 5, 3, 6, 3, 7, 9, 7, 8, 8, 0, 7, 0, 9, 1, 7, 1, 2,
-+    9, 5, 1, 6, 6, 0, 1, 5, 6, 2, 5, 1, 8, 1, 8, 9, 8, 9, 4, 0, 3, 5, 4, 5, 8,
-+    5, 6, 4, 7, 5, 8, 3, 0, 0, 7, 8, 1, 2, 5, 9, 0, 9, 4, 9, 4, 7, 0, 1, 7, 7,
-+    2, 9, 2, 8, 2, 3, 7, 9, 1, 5, 0, 3, 9, 0, 6, 2, 5, 4, 5, 4, 7, 4, 7, 3, 5,
-+    0, 8, 8, 6, 4, 6, 4, 1, 1, 8, 9, 5, 7, 5, 1, 9, 5, 3, 1, 2, 5, 2, 2, 7, 3,
-+    7, 3, 6, 7, 5, 4, 4, 3, 2, 3, 2, 0, 5, 9, 4, 7, 8, 7, 5, 9, 7, 6, 5, 6, 2,
-+    5, 1, 1, 3, 6, 8, 6, 8, 3, 7, 7, 2, 1, 6, 1, 6, 0, 2, 9, 7, 3, 9, 3, 7, 9,
-+    8, 8, 2, 8, 1, 2, 5, 5, 6, 8, 4, 3, 4, 1, 8, 8, 6, 0, 8, 0, 8, 0, 1, 4, 8,
-+    6, 9, 6, 8, 9, 9, 4, 1, 4, 0, 6, 2, 5, 2, 8, 4, 2, 1, 7, 0, 9, 4, 3, 0, 4,
-+    0, 4, 0, 0, 7, 4, 3, 4, 8, 4, 4, 9, 7, 0, 7, 0, 3, 1, 2, 5, 1, 4, 2, 1, 0,
-+    8, 5, 4, 7, 1, 5, 2, 0, 2, 0, 0, 3, 7, 1, 7, 4, 2, 2, 4, 8, 5, 3, 5, 1, 5,
-+    6, 2, 5, 7, 1, 0, 5, 4, 2, 7, 3, 5, 7, 6, 0, 1, 0, 0, 1, 8, 5, 8, 7, 1, 1,
-+    2, 4, 2, 6, 7, 5, 7, 8, 1, 2, 5, 3, 5, 5, 2, 7, 1, 3, 6, 7, 8, 8, 0, 0, 5,
-+    0, 0, 9, 2, 9, 3, 5, 5, 6, 2, 1, 3, 3, 7, 8, 9, 0, 6, 2, 5, 1, 7, 7, 6, 3,
-+    5, 6, 8, 3, 9, 4, 0, 0, 2, 5, 0, 4, 6, 4, 6, 7, 7, 8, 1, 0, 6, 6, 8, 9, 4,
-+    5, 3, 1, 2, 5, 8, 8, 8, 1, 7, 8, 4, 1, 9, 7, 0, 0, 1, 2, 5, 2, 3, 2, 3, 3,
-+    8, 9, 0, 5, 3, 3, 4, 4, 7, 2, 6, 5, 6, 2, 5, 4, 4, 4, 0, 8, 9, 2, 0, 9, 8,
-+    5, 0, 0, 6, 2, 6, 1, 6, 1, 6, 9, 4, 5, 2, 6, 6, 7, 2, 3, 6, 3, 2, 8, 1, 2,
-+    5, 2, 2, 2, 0, 4, 4, 6, 0, 4, 9, 2, 5, 0, 3, 1, 3, 0, 8, 0, 8, 4, 7, 2, 6,
-+    3, 3, 3, 6, 1, 8, 1, 6, 4, 0, 6, 2, 5, 1, 1, 1, 0, 2, 2, 3, 0, 2, 4, 6, 2,
-+    5, 1, 5, 6, 5, 4, 0, 4, 2, 3, 6, 3, 1, 6, 6, 8, 0, 9, 0, 8, 2, 0, 3, 1, 2,
-+    5, 5, 5, 5, 1, 1, 1, 5, 1, 2, 3, 1, 2, 5, 7, 8, 2, 7, 0, 2, 1, 1, 8, 1, 5,
-+    8, 3, 4, 0, 4, 5, 4, 1, 0, 1, 5, 6, 2, 5, 2, 7, 7, 5, 5, 5, 7, 5, 6, 1, 5,
-+    6, 2, 8, 9, 1, 3, 5, 1, 0, 5, 9, 0, 7, 9, 1, 7, 0, 2, 2, 7, 0, 5, 0, 7, 8,
-+    1, 2, 5, 1, 3, 8, 7, 7, 7, 8, 7, 8, 0, 7, 8, 1, 4, 4, 5, 6, 7, 5, 5, 2, 9,
-+    5, 3, 9, 5, 8, 5, 1, 1, 3, 5, 2, 5, 3, 9, 0, 6, 2, 5, 6, 9, 3, 8, 8, 9, 3,
-+    9, 0, 3, 9, 0, 7, 2, 2, 8, 3, 7, 7, 6, 4, 7, 6, 9, 7, 9, 2, 5, 5, 6, 7, 6,
-+    2, 6, 9, 5, 3, 1, 2, 5, 3, 4, 6, 9, 4, 4, 6, 9, 5, 1, 9, 5, 3, 6, 1, 4, 1,
-+    8, 8, 8, 2, 3, 8, 4, 8, 9, 6, 2, 7, 8, 3, 8, 1, 3, 4, 7, 6, 5, 6, 2, 5, 1,
-+    7, 3, 4, 7, 2, 3, 4, 7, 5, 9, 7, 6, 8, 0, 7, 0, 9, 4, 4, 1, 1, 9, 2, 4, 4,
-+    8, 1, 3, 9, 1, 9, 0, 6, 7, 3, 8, 2, 8, 1, 2, 5, 8, 6, 7, 3, 6, 1, 7, 3, 7,
-+    9, 8, 8, 4, 0, 3, 5, 4, 7, 2, 0, 5, 9, 6, 2, 2, 4, 0, 6, 9, 5, 9, 5, 3, 3,
-+    6, 9, 1, 4, 0, 6, 2, 5,
- };
- 
--static const uint8_t wuffs_base__base_64__encode_url[64] = {
--    // 0     1     2     3     4     5     6     7
--    // 8     9     A     B     C     D     E     F
--    0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,  // 0x00 ..= 0x07.
--    0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50,  // 0x08 ..= 0x0F.
--    0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,  // 0x10 ..= 0x17.
--    0x59, 0x5A, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66,  // 0x18 ..= 0x1F.
--    0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E,  // 0x20 ..= 0x27.
--    0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76,  // 0x28 ..= 0x2F.
--    0x77, 0x78, 0x79, 0x7A, 0x30, 0x31, 0x32, 0x33,  // 0x30 ..= 0x37.
--    0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x2D, 0x5F,  // 0x38 ..= 0x3F.
-+// --------
-+
-+// wuffs_private_impl__powers_of_10 contains truncated approximations to the
-+// powers of 10, ranging from 1e-307 to 1e+288 inclusive, as 596 pairs of
-+// uint64_t values (a 128-bit mantissa).
-+//
-+// There's also an implicit third column (implied by a linear formula involving
-+// the base-10 exponent) that is the base-2 exponent, biased by a magic
-+// constant. That constant (1214 or 0x04BE) equals 1023 + 191. 1023 is the bias
-+// for IEEE 754 double-precision floating point. 191 is ((3 * 64) - 1) and
-+// wuffs_private_impl__parse_number_f64_eisel_lemire works with
-+// multiples-of-64-bit mantissas.
-+//
-+// For example, the third row holds the approximation to 1e-305:
-+//   0xE0B62E29_29ABA83C_331ACDAB_FE94DE87 * (2 ** (0x0049 - 0x04BE))
-+//
-+// Similarly, 1e+4 is approximated by:
-+//   0x9C400000_00000000_00000000_00000000 * (2 ** (0x044C - 0x04BE))
-+//
-+// Similarly, 1e+68 is approximated by:
-+//   0xED63A231_D4C4FB27_4CA7AAA8_63EE4BDD * (2 ** (0x0520 - 0x04BE))
-+//
-+// This table was generated by by script/print-mpb-powers-of-10.go
-+static const uint64_t wuffs_private_impl__powers_of_10[596][2] = {
-+    {0xA5D3B6D479F8E056, 0x8FD0C16206306BAB},  // 1e-307
-+    {0x8F48A4899877186C, 0xB3C4F1BA87BC8696},  // 1e-306
-+    {0x331ACDABFE94DE87, 0xE0B62E2929ABA83C},  // 1e-305
-+    {0x9FF0C08B7F1D0B14, 0x8C71DCD9BA0B4925},  // 1e-304
-+    {0x07ECF0AE5EE44DD9, 0xAF8E5410288E1B6F},  // 1e-303
-+    {0xC9E82CD9F69D6150, 0xDB71E91432B1A24A},  // 1e-302
-+    {0xBE311C083A225CD2, 0x892731AC9FAF056E},  // 1e-301
-+    {0x6DBD630A48AAF406, 0xAB70FE17C79AC6CA},  // 1e-300
-+    {0x092CBBCCDAD5B108, 0xD64D3D9DB981787D},  // 1e-299
-+    {0x25BBF56008C58EA5, 0x85F0468293F0EB4E},  // 1e-298
-+    {0xAF2AF2B80AF6F24E, 0xA76C582338ED2621},  // 1e-297
-+    {0x1AF5AF660DB4AEE1, 0xD1476E2C07286FAA},  // 1e-296
-+    {0x50D98D9FC890ED4D, 0x82CCA4DB847945CA},  // 1e-295
-+    {0xE50FF107BAB528A0, 0xA37FCE126597973C},  // 1e-294
-+    {0x1E53ED49A96272C8, 0xCC5FC196FEFD7D0C},  // 1e-293
-+    {0x25E8E89C13BB0F7A, 0xFF77B1FCBEBCDC4F},  // 1e-292
-+    {0x77B191618C54E9AC, 0x9FAACF3DF73609B1},  // 1e-291
-+    {0xD59DF5B9EF6A2417, 0xC795830D75038C1D},  // 1e-290
-+    {0x4B0573286B44AD1D, 0xF97AE3D0D2446F25},  // 1e-289
-+    {0x4EE367F9430AEC32, 0x9BECCE62836AC577},  // 1e-288
-+    {0x229C41F793CDA73F, 0xC2E801FB244576D5},  // 1e-287
-+    {0x6B43527578C1110F, 0xF3A20279ED56D48A},  // 1e-286
-+    {0x830A13896B78AAA9, 0x9845418C345644D6},  // 1e-285
-+    {0x23CC986BC656D553, 0xBE5691EF416BD60C},  // 1e-284
-+    {0x2CBFBE86B7EC8AA8, 0xEDEC366B11C6CB8F},  // 1e-283
-+    {0x7BF7D71432F3D6A9, 0x94B3A202EB1C3F39},  // 1e-282
-+    {0xDAF5CCD93FB0CC53, 0xB9E08A83A5E34F07},  // 1e-281
-+    {0xD1B3400F8F9CFF68, 0xE858AD248F5C22C9},  // 1e-280
-+    {0x23100809B9C21FA1, 0x91376C36D99995BE},  // 1e-279
-+    {0xABD40A0C2832A78A, 0xB58547448FFFFB2D},  // 1e-278
-+    {0x16C90C8F323F516C, 0xE2E69915B3FFF9F9},  // 1e-277
-+    {0xAE3DA7D97F6792E3, 0x8DD01FAD907FFC3B},  // 1e-276
-+    {0x99CD11CFDF41779C, 0xB1442798F49FFB4A},  // 1e-275
-+    {0x40405643D711D583, 0xDD95317F31C7FA1D},  // 1e-274
-+    {0x482835EA666B2572, 0x8A7D3EEF7F1CFC52},  // 1e-273
-+    {0xDA3243650005EECF, 0xAD1C8EAB5EE43B66},  // 1e-272
-+    {0x90BED43E40076A82, 0xD863B256369D4A40},  // 1e-271
-+    {0x5A7744A6E804A291, 0x873E4F75E2224E68},  // 1e-270
-+    {0x711515D0A205CB36, 0xA90DE3535AAAE202},  // 1e-269
-+    {0x0D5A5B44CA873E03, 0xD3515C2831559A83},  // 1e-268
-+    {0xE858790AFE9486C2, 0x8412D9991ED58091},  // 1e-267
-+    {0x626E974DBE39A872, 0xA5178FFF668AE0B6},  // 1e-266
-+    {0xFB0A3D212DC8128F, 0xCE5D73FF402D98E3},  // 1e-265
-+    {0x7CE66634BC9D0B99, 0x80FA687F881C7F8E},  // 1e-264
-+    {0x1C1FFFC1EBC44E80, 0xA139029F6A239F72},  // 1e-263
-+    {0xA327FFB266B56220, 0xC987434744AC874E},  // 1e-262
-+    {0x4BF1FF9F0062BAA8, 0xFBE9141915D7A922},  // 1e-261
-+    {0x6F773FC3603DB4A9, 0x9D71AC8FADA6C9B5},  // 1e-260
-+    {0xCB550FB4384D21D3, 0xC4CE17B399107C22},  // 1e-259
-+    {0x7E2A53A146606A48, 0xF6019DA07F549B2B},  // 1e-258
-+    {0x2EDA7444CBFC426D, 0x99C102844F94E0FB},  // 1e-257
-+    {0xFA911155FEFB5308, 0xC0314325637A1939},  // 1e-256
-+    {0x793555AB7EBA27CA, 0xF03D93EEBC589F88},  // 1e-255
-+    {0x4BC1558B2F3458DE, 0x96267C7535B763B5},  // 1e-254
-+    {0x9EB1AAEDFB016F16, 0xBBB01B9283253CA2},  // 1e-253
-+    {0x465E15A979C1CADC, 0xEA9C227723EE8BCB},  // 1e-252
-+    {0x0BFACD89EC191EC9, 0x92A1958A7675175F},  // 1e-251
-+    {0xCEF980EC671F667B, 0xB749FAED14125D36},  // 1e-250
-+    {0x82B7E12780E7401A, 0xE51C79A85916F484},  // 1e-249
-+    {0xD1B2ECB8B0908810, 0x8F31CC0937AE58D2},  // 1e-248
-+    {0x861FA7E6DCB4AA15, 0xB2FE3F0B8599EF07},  // 1e-247
-+    {0x67A791E093E1D49A, 0xDFBDCECE67006AC9},  // 1e-246
-+    {0xE0C8BB2C5C6D24E0, 0x8BD6A141006042BD},  // 1e-245
-+    {0x58FAE9F773886E18, 0xAECC49914078536D},  // 1e-244
-+    {0xAF39A475506A899E, 0xDA7F5BF590966848},  // 1e-243
-+    {0x6D8406C952429603, 0x888F99797A5E012D},  // 1e-242
-+    {0xC8E5087BA6D33B83, 0xAAB37FD7D8F58178},  // 1e-241
-+    {0xFB1E4A9A90880A64, 0xD5605FCDCF32E1D6},  // 1e-240
-+    {0x5CF2EEA09A55067F, 0x855C3BE0A17FCD26},  // 1e-239
-+    {0xF42FAA48C0EA481E, 0xA6B34AD8C9DFC06F},  // 1e-238
-+    {0xF13B94DAF124DA26, 0xD0601D8EFC57B08B},  // 1e-237
-+    {0x76C53D08D6B70858, 0x823C12795DB6CE57},  // 1e-236
-+    {0x54768C4B0C64CA6E, 0xA2CB1717B52481ED},  // 1e-235
-+    {0xA9942F5DCF7DFD09, 0xCB7DDCDDA26DA268},  // 1e-234
-+    {0xD3F93B35435D7C4C, 0xFE5D54150B090B02},  // 1e-233
-+    {0xC47BC5014A1A6DAF, 0x9EFA548D26E5A6E1},  // 1e-232
-+    {0x359AB6419CA1091B, 0xC6B8E9B0709F109A},  // 1e-231
-+    {0xC30163D203C94B62, 0xF867241C8CC6D4C0},  // 1e-230
-+    {0x79E0DE63425DCF1D, 0x9B407691D7FC44F8},  // 1e-229
-+    {0x985915FC12F542E4, 0xC21094364DFB5636},  // 1e-228
-+    {0x3E6F5B7B17B2939D, 0xF294B943E17A2BC4},  // 1e-227
-+    {0xA705992CEECF9C42, 0x979CF3CA6CEC5B5A},  // 1e-226
-+    {0x50C6FF782A838353, 0xBD8430BD08277231},  // 1e-225
-+    {0xA4F8BF5635246428, 0xECE53CEC4A314EBD},  // 1e-224
-+    {0x871B7795E136BE99, 0x940F4613AE5ED136},  // 1e-223
-+    {0x28E2557B59846E3F, 0xB913179899F68584},  // 1e-222
-+    {0x331AEADA2FE589CF, 0xE757DD7EC07426E5},  // 1e-221
-+    {0x3FF0D2C85DEF7621, 0x9096EA6F3848984F},  // 1e-220
-+    {0x0FED077A756B53A9, 0xB4BCA50B065ABE63},  // 1e-219
-+    {0xD3E8495912C62894, 0xE1EBCE4DC7F16DFB},  // 1e-218
-+    {0x64712DD7ABBBD95C, 0x8D3360F09CF6E4BD},  // 1e-217
-+    {0xBD8D794D96AACFB3, 0xB080392CC4349DEC},  // 1e-216
-+    {0xECF0D7A0FC5583A0, 0xDCA04777F541C567},  // 1e-215
-+    {0xF41686C49DB57244, 0x89E42CAAF9491B60},  // 1e-214
-+    {0x311C2875C522CED5, 0xAC5D37D5B79B6239},  // 1e-213
-+    {0x7D633293366B828B, 0xD77485CB25823AC7},  // 1e-212
-+    {0xAE5DFF9C02033197, 0x86A8D39EF77164BC},  // 1e-211
-+    {0xD9F57F830283FDFC, 0xA8530886B54DBDEB},  // 1e-210
-+    {0xD072DF63C324FD7B, 0xD267CAA862A12D66},  // 1e-209
-+    {0x4247CB9E59F71E6D, 0x8380DEA93DA4BC60},  // 1e-208
-+    {0x52D9BE85F074E608, 0xA46116538D0DEB78},  // 1e-207
-+    {0x67902E276C921F8B, 0xCD795BE870516656},  // 1e-206
-+    {0x00BA1CD8A3DB53B6, 0x806BD9714632DFF6},  // 1e-205
-+    {0x80E8A40ECCD228A4, 0xA086CFCD97BF97F3},  // 1e-204
-+    {0x6122CD128006B2CD, 0xC8A883C0FDAF7DF0},  // 1e-203
-+    {0x796B805720085F81, 0xFAD2A4B13D1B5D6C},  // 1e-202
-+    {0xCBE3303674053BB0, 0x9CC3A6EEC6311A63},  // 1e-201
-+    {0xBEDBFC4411068A9C, 0xC3F490AA77BD60FC},  // 1e-200
-+    {0xEE92FB5515482D44, 0xF4F1B4D515ACB93B},  // 1e-199
-+    {0x751BDD152D4D1C4A, 0x991711052D8BF3C5},  // 1e-198
-+    {0xD262D45A78A0635D, 0xBF5CD54678EEF0B6},  // 1e-197
-+    {0x86FB897116C87C34, 0xEF340A98172AACE4},  // 1e-196
-+    {0xD45D35E6AE3D4DA0, 0x9580869F0E7AAC0E},  // 1e-195
-+    {0x8974836059CCA109, 0xBAE0A846D2195712},  // 1e-194
-+    {0x2BD1A438703FC94B, 0xE998D258869FACD7},  // 1e-193
-+    {0x7B6306A34627DDCF, 0x91FF83775423CC06},  // 1e-192
-+    {0x1A3BC84C17B1D542, 0xB67F6455292CBF08},  // 1e-191
-+    {0x20CABA5F1D9E4A93, 0xE41F3D6A7377EECA},  // 1e-190
-+    {0x547EB47B7282EE9C, 0x8E938662882AF53E},  // 1e-189
-+    {0xE99E619A4F23AA43, 0xB23867FB2A35B28D},  // 1e-188
-+    {0x6405FA00E2EC94D4, 0xDEC681F9F4C31F31},  // 1e-187
-+    {0xDE83BC408DD3DD04, 0x8B3C113C38F9F37E},  // 1e-186
-+    {0x9624AB50B148D445, 0xAE0B158B4738705E},  // 1e-185
-+    {0x3BADD624DD9B0957, 0xD98DDAEE19068C76},  // 1e-184
-+    {0xE54CA5D70A80E5D6, 0x87F8A8D4CFA417C9},  // 1e-183
-+    {0x5E9FCF4CCD211F4C, 0xA9F6D30A038D1DBC},  // 1e-182
-+    {0x7647C3200069671F, 0xD47487CC8470652B},  // 1e-181
-+    {0x29ECD9F40041E073, 0x84C8D4DFD2C63F3B},  // 1e-180
-+    {0xF468107100525890, 0xA5FB0A17C777CF09},  // 1e-179
-+    {0x7182148D4066EEB4, 0xCF79CC9DB955C2CC},  // 1e-178
-+    {0xC6F14CD848405530, 0x81AC1FE293D599BF},  // 1e-177
-+    {0xB8ADA00E5A506A7C, 0xA21727DB38CB002F},  // 1e-176
-+    {0xA6D90811F0E4851C, 0xCA9CF1D206FDC03B},  // 1e-175
-+    {0x908F4A166D1DA663, 0xFD442E4688BD304A},  // 1e-174
-+    {0x9A598E4E043287FE, 0x9E4A9CEC15763E2E},  // 1e-173
-+    {0x40EFF1E1853F29FD, 0xC5DD44271AD3CDBA},  // 1e-172
-+    {0xD12BEE59E68EF47C, 0xF7549530E188C128},  // 1e-171
-+    {0x82BB74F8301958CE, 0x9A94DD3E8CF578B9},  // 1e-170
-+    {0xE36A52363C1FAF01, 0xC13A148E3032D6E7},  // 1e-169
-+    {0xDC44E6C3CB279AC1, 0xF18899B1BC3F8CA1},  // 1e-168
-+    {0x29AB103A5EF8C0B9, 0x96F5600F15A7B7E5},  // 1e-167
-+    {0x7415D448F6B6F0E7, 0xBCB2B812DB11A5DE},  // 1e-166
-+    {0x111B495B3464AD21, 0xEBDF661791D60F56},  // 1e-165
-+    {0xCAB10DD900BEEC34, 0x936B9FCEBB25C995},  // 1e-164
-+    {0x3D5D514F40EEA742, 0xB84687C269EF3BFB},  // 1e-163
-+    {0x0CB4A5A3112A5112, 0xE65829B3046B0AFA},  // 1e-162
-+    {0x47F0E785EABA72AB, 0x8FF71A0FE2C2E6DC},  // 1e-161
-+    {0x59ED216765690F56, 0xB3F4E093DB73A093},  // 1e-160
-+    {0x306869C13EC3532C, 0xE0F218B8D25088B8},  // 1e-159
-+    {0x1E414218C73A13FB, 0x8C974F7383725573},  // 1e-158
-+    {0xE5D1929EF90898FA, 0xAFBD2350644EEACF},  // 1e-157
-+    {0xDF45F746B74ABF39, 0xDBAC6C247D62A583},  // 1e-156
-+    {0x6B8BBA8C328EB783, 0x894BC396CE5DA772},  // 1e-155
-+    {0x066EA92F3F326564, 0xAB9EB47C81F5114F},  // 1e-154
-+    {0xC80A537B0EFEFEBD, 0xD686619BA27255A2},  // 1e-153
-+    {0xBD06742CE95F5F36, 0x8613FD0145877585},  // 1e-152
-+    {0x2C48113823B73704, 0xA798FC4196E952E7},  // 1e-151
-+    {0xF75A15862CA504C5, 0xD17F3B51FCA3A7A0},  // 1e-150
-+    {0x9A984D73DBE722FB, 0x82EF85133DE648C4},  // 1e-149
-+    {0xC13E60D0D2E0EBBA, 0xA3AB66580D5FDAF5},  // 1e-148
-+    {0x318DF905079926A8, 0xCC963FEE10B7D1B3},  // 1e-147
-+    {0xFDF17746497F7052, 0xFFBBCFE994E5C61F},  // 1e-146
-+    {0xFEB6EA8BEDEFA633, 0x9FD561F1FD0F9BD3},  // 1e-145
-+    {0xFE64A52EE96B8FC0, 0xC7CABA6E7C5382C8},  // 1e-144
-+    {0x3DFDCE7AA3C673B0, 0xF9BD690A1B68637B},  // 1e-143
-+    {0x06BEA10CA65C084E, 0x9C1661A651213E2D},  // 1e-142
-+    {0x486E494FCFF30A62, 0xC31BFA0FE5698DB8},  // 1e-141
-+    {0x5A89DBA3C3EFCCFA, 0xF3E2F893DEC3F126},  // 1e-140
-+    {0xF89629465A75E01C, 0x986DDB5C6B3A76B7},  // 1e-139
-+    {0xF6BBB397F1135823, 0xBE89523386091465},  // 1e-138
-+    {0x746AA07DED582E2C, 0xEE2BA6C0678B597F},  // 1e-137
-+    {0xA8C2A44EB4571CDC, 0x94DB483840B717EF},  // 1e-136
-+    {0x92F34D62616CE413, 0xBA121A4650E4DDEB},  // 1e-135
-+    {0x77B020BAF9C81D17, 0xE896A0D7E51E1566},  // 1e-134
-+    {0x0ACE1474DC1D122E, 0x915E2486EF32CD60},  // 1e-133
-+    {0x0D819992132456BA, 0xB5B5ADA8AAFF80B8},  // 1e-132
-+    {0x10E1FFF697ED6C69, 0xE3231912D5BF60E6},  // 1e-131
-+    {0xCA8D3FFA1EF463C1, 0x8DF5EFABC5979C8F},  // 1e-130
-+    {0xBD308FF8A6B17CB2, 0xB1736B96B6FD83B3},  // 1e-129
-+    {0xAC7CB3F6D05DDBDE, 0xDDD0467C64BCE4A0},  // 1e-128
-+    {0x6BCDF07A423AA96B, 0x8AA22C0DBEF60EE4},  // 1e-127
-+    {0x86C16C98D2C953C6, 0xAD4AB7112EB3929D},  // 1e-126
-+    {0xE871C7BF077BA8B7, 0xD89D64D57A607744},  // 1e-125
-+    {0x11471CD764AD4972, 0x87625F056C7C4A8B},  // 1e-124
-+    {0xD598E40D3DD89BCF, 0xA93AF6C6C79B5D2D},  // 1e-123
-+    {0x4AFF1D108D4EC2C3, 0xD389B47879823479},  // 1e-122
-+    {0xCEDF722A585139BA, 0x843610CB4BF160CB},  // 1e-121
-+    {0xC2974EB4EE658828, 0xA54394FE1EEDB8FE},  // 1e-120
-+    {0x733D226229FEEA32, 0xCE947A3DA6A9273E},  // 1e-119
-+    {0x0806357D5A3F525F, 0x811CCC668829B887},  // 1e-118
-+    {0xCA07C2DCB0CF26F7, 0xA163FF802A3426A8},  // 1e-117
-+    {0xFC89B393DD02F0B5, 0xC9BCFF6034C13052},  // 1e-116
-+    {0xBBAC2078D443ACE2, 0xFC2C3F3841F17C67},  // 1e-115
-+    {0xD54B944B84AA4C0D, 0x9D9BA7832936EDC0},  // 1e-114
-+    {0x0A9E795E65D4DF11, 0xC5029163F384A931},  // 1e-113
-+    {0x4D4617B5FF4A16D5, 0xF64335BCF065D37D},  // 1e-112
-+    {0x504BCED1BF8E4E45, 0x99EA0196163FA42E},  // 1e-111
-+    {0xE45EC2862F71E1D6, 0xC06481FB9BCF8D39},  // 1e-110
-+    {0x5D767327BB4E5A4C, 0xF07DA27A82C37088},  // 1e-109
-+    {0x3A6A07F8D510F86F, 0x964E858C91BA2655},  // 1e-108
-+    {0x890489F70A55368B, 0xBBE226EFB628AFEA},  // 1e-107
-+    {0x2B45AC74CCEA842E, 0xEADAB0ABA3B2DBE5},  // 1e-106
-+    {0x3B0B8BC90012929D, 0x92C8AE6B464FC96F},  // 1e-105
-+    {0x09CE6EBB40173744, 0xB77ADA0617E3BBCB},  // 1e-104
-+    {0xCC420A6A101D0515, 0xE55990879DDCAABD},  // 1e-103
-+    {0x9FA946824A12232D, 0x8F57FA54C2A9EAB6},  // 1e-102
-+    {0x47939822DC96ABF9, 0xB32DF8E9F3546564},  // 1e-101
-+    {0x59787E2B93BC56F7, 0xDFF9772470297EBD},  // 1e-100
-+    {0x57EB4EDB3C55B65A, 0x8BFBEA76C619EF36},  // 1e-99
-+    {0xEDE622920B6B23F1, 0xAEFAE51477A06B03},  // 1e-98
-+    {0xE95FAB368E45ECED, 0xDAB99E59958885C4},  // 1e-97
-+    {0x11DBCB0218EBB414, 0x88B402F7FD75539B},  // 1e-96
-+    {0xD652BDC29F26A119, 0xAAE103B5FCD2A881},  // 1e-95
-+    {0x4BE76D3346F0495F, 0xD59944A37C0752A2},  // 1e-94
-+    {0x6F70A4400C562DDB, 0x857FCAE62D8493A5},  // 1e-93
-+    {0xCB4CCD500F6BB952, 0xA6DFBD9FB8E5B88E},  // 1e-92
-+    {0x7E2000A41346A7A7, 0xD097AD07A71F26B2},  // 1e-91
-+    {0x8ED400668C0C28C8, 0x825ECC24C873782F},  // 1e-90
-+    {0x728900802F0F32FA, 0xA2F67F2DFA90563B},  // 1e-89
-+    {0x4F2B40A03AD2FFB9, 0xCBB41EF979346BCA},  // 1e-88
-+    {0xE2F610C84987BFA8, 0xFEA126B7D78186BC},  // 1e-87
-+    {0x0DD9CA7D2DF4D7C9, 0x9F24B832E6B0F436},  // 1e-86
-+    {0x91503D1C79720DBB, 0xC6EDE63FA05D3143},  // 1e-85
-+    {0x75A44C6397CE912A, 0xF8A95FCF88747D94},  // 1e-84
-+    {0xC986AFBE3EE11ABA, 0x9B69DBE1B548CE7C},  // 1e-83
-+    {0xFBE85BADCE996168, 0xC24452DA229B021B},  // 1e-82
-+    {0xFAE27299423FB9C3, 0xF2D56790AB41C2A2},  // 1e-81
-+    {0xDCCD879FC967D41A, 0x97C560BA6B0919A5},  // 1e-80
-+    {0x5400E987BBC1C920, 0xBDB6B8E905CB600F},  // 1e-79
-+    {0x290123E9AAB23B68, 0xED246723473E3813},  // 1e-78
-+    {0xF9A0B6720AAF6521, 0x9436C0760C86E30B},  // 1e-77
-+    {0xF808E40E8D5B3E69, 0xB94470938FA89BCE},  // 1e-76
-+    {0xB60B1D1230B20E04, 0xE7958CB87392C2C2},  // 1e-75
-+    {0xB1C6F22B5E6F48C2, 0x90BD77F3483BB9B9},  // 1e-74
-+    {0x1E38AEB6360B1AF3, 0xB4ECD5F01A4AA828},  // 1e-73
-+    {0x25C6DA63C38DE1B0, 0xE2280B6C20DD5232},  // 1e-72
-+    {0x579C487E5A38AD0E, 0x8D590723948A535F},  // 1e-71
-+    {0x2D835A9DF0C6D851, 0xB0AF48EC79ACE837},  // 1e-70
-+    {0xF8E431456CF88E65, 0xDCDB1B2798182244},  // 1e-69
-+    {0x1B8E9ECB641B58FF, 0x8A08F0F8BF0F156B},  // 1e-68
-+    {0xE272467E3D222F3F, 0xAC8B2D36EED2DAC5},  // 1e-67
-+    {0x5B0ED81DCC6ABB0F, 0xD7ADF884AA879177},  // 1e-66
-+    {0x98E947129FC2B4E9, 0x86CCBB52EA94BAEA},  // 1e-65
-+    {0x3F2398D747B36224, 0xA87FEA27A539E9A5},  // 1e-64
-+    {0x8EEC7F0D19A03AAD, 0xD29FE4B18E88640E},  // 1e-63
-+    {0x1953CF68300424AC, 0x83A3EEEEF9153E89},  // 1e-62
-+    {0x5FA8C3423C052DD7, 0xA48CEAAAB75A8E2B},  // 1e-61
-+    {0x3792F412CB06794D, 0xCDB02555653131B6},  // 1e-60
-+    {0xE2BBD88BBEE40BD0, 0x808E17555F3EBF11},  // 1e-59
-+    {0x5B6ACEAEAE9D0EC4, 0xA0B19D2AB70E6ED6},  // 1e-58
-+    {0xF245825A5A445275, 0xC8DE047564D20A8B},  // 1e-57
-+    {0xEED6E2F0F0D56712, 0xFB158592BE068D2E},  // 1e-56
-+    {0x55464DD69685606B, 0x9CED737BB6C4183D},  // 1e-55
-+    {0xAA97E14C3C26B886, 0xC428D05AA4751E4C},  // 1e-54
-+    {0xD53DD99F4B3066A8, 0xF53304714D9265DF},  // 1e-53
-+    {0xE546A8038EFE4029, 0x993FE2C6D07B7FAB},  // 1e-52
-+    {0xDE98520472BDD033, 0xBF8FDB78849A5F96},  // 1e-51
-+    {0x963E66858F6D4440, 0xEF73D256A5C0F77C},  // 1e-50
-+    {0xDDE7001379A44AA8, 0x95A8637627989AAD},  // 1e-49
-+    {0x5560C018580D5D52, 0xBB127C53B17EC159},  // 1e-48
-+    {0xAAB8F01E6E10B4A6, 0xE9D71B689DDE71AF},  // 1e-47
-+    {0xCAB3961304CA70E8, 0x9226712162AB070D},  // 1e-46
-+    {0x3D607B97C5FD0D22, 0xB6B00D69BB55C8D1},  // 1e-45
-+    {0x8CB89A7DB77C506A, 0xE45C10C42A2B3B05},  // 1e-44
-+    {0x77F3608E92ADB242, 0x8EB98A7A9A5B04E3},  // 1e-43
-+    {0x55F038B237591ED3, 0xB267ED1940F1C61C},  // 1e-42
-+    {0x6B6C46DEC52F6688, 0xDF01E85F912E37A3},  // 1e-41
-+    {0x2323AC4B3B3DA015, 0x8B61313BBABCE2C6},  // 1e-40
-+    {0xABEC975E0A0D081A, 0xAE397D8AA96C1B77},  // 1e-39
-+    {0x96E7BD358C904A21, 0xD9C7DCED53C72255},  // 1e-38
-+    {0x7E50D64177DA2E54, 0x881CEA14545C7575},  // 1e-37
-+    {0xDDE50BD1D5D0B9E9, 0xAA242499697392D2},  // 1e-36
-+    {0x955E4EC64B44E864, 0xD4AD2DBFC3D07787},  // 1e-35
-+    {0xBD5AF13BEF0B113E, 0x84EC3C97DA624AB4},  // 1e-34
-+    {0xECB1AD8AEACDD58E, 0xA6274BBDD0FADD61},  // 1e-33
-+    {0x67DE18EDA5814AF2, 0xCFB11EAD453994BA},  // 1e-32
-+    {0x80EACF948770CED7, 0x81CEB32C4B43FCF4},  // 1e-31
-+    {0xA1258379A94D028D, 0xA2425FF75E14FC31},  // 1e-30
-+    {0x096EE45813A04330, 0xCAD2F7F5359A3B3E},  // 1e-29
-+    {0x8BCA9D6E188853FC, 0xFD87B5F28300CA0D},  // 1e-28
-+    {0x775EA264CF55347D, 0x9E74D1B791E07E48},  // 1e-27
-+    {0x95364AFE032A819D, 0xC612062576589DDA},  // 1e-26
-+    {0x3A83DDBD83F52204, 0xF79687AED3EEC551},  // 1e-25
-+    {0xC4926A9672793542, 0x9ABE14CD44753B52},  // 1e-24
-+    {0x75B7053C0F178293, 0xC16D9A0095928A27},  // 1e-23
-+    {0x5324C68B12DD6338, 0xF1C90080BAF72CB1},  // 1e-22
-+    {0xD3F6FC16EBCA5E03, 0x971DA05074DA7BEE},  // 1e-21
-+    {0x88F4BB1CA6BCF584, 0xBCE5086492111AEA},  // 1e-20
-+    {0x2B31E9E3D06C32E5, 0xEC1E4A7DB69561A5},  // 1e-19
-+    {0x3AFF322E62439FCF, 0x9392EE8E921D5D07},  // 1e-18
-+    {0x09BEFEB9FAD487C2, 0xB877AA3236A4B449},  // 1e-17
-+    {0x4C2EBE687989A9B3, 0xE69594BEC44DE15B},  // 1e-16
-+    {0x0F9D37014BF60A10, 0x901D7CF73AB0ACD9},  // 1e-15
-+    {0x538484C19EF38C94, 0xB424DC35095CD80F},  // 1e-14
-+    {0x2865A5F206B06FB9, 0xE12E13424BB40E13},  // 1e-13
-+    {0xF93F87B7442E45D3, 0x8CBCCC096F5088CB},  // 1e-12
-+    {0xF78F69A51539D748, 0xAFEBFF0BCB24AAFE},  // 1e-11
-+    {0xB573440E5A884D1B, 0xDBE6FECEBDEDD5BE},  // 1e-10
-+    {0x31680A88F8953030, 0x89705F4136B4A597},  // 1e-9
-+    {0xFDC20D2B36BA7C3D, 0xABCC77118461CEFC},  // 1e-8
-+    {0x3D32907604691B4C, 0xD6BF94D5E57A42BC},  // 1e-7
-+    {0xA63F9A49C2C1B10F, 0x8637BD05AF6C69B5},  // 1e-6
-+    {0x0FCF80DC33721D53, 0xA7C5AC471B478423},  // 1e-5
-+    {0xD3C36113404EA4A8, 0xD1B71758E219652B},  // 1e-4
-+    {0x645A1CAC083126E9, 0x83126E978D4FDF3B},  // 1e-3
-+    {0x3D70A3D70A3D70A3, 0xA3D70A3D70A3D70A},  // 1e-2
-+    {0xCCCCCCCCCCCCCCCC, 0xCCCCCCCCCCCCCCCC},  // 1e-1
-+    {0x0000000000000000, 0x8000000000000000},  // 1e0
-+    {0x0000000000000000, 0xA000000000000000},  // 1e1
-+    {0x0000000000000000, 0xC800000000000000},  // 1e2
-+    {0x0000000000000000, 0xFA00000000000000},  // 1e3
-+    {0x0000000000000000, 0x9C40000000000000},  // 1e4
-+    {0x0000000000000000, 0xC350000000000000},  // 1e5
-+    {0x0000000000000000, 0xF424000000000000},  // 1e6
-+    {0x0000000000000000, 0x9896800000000000},  // 1e7
-+    {0x0000000000000000, 0xBEBC200000000000},  // 1e8
-+    {0x0000000000000000, 0xEE6B280000000000},  // 1e9
-+    {0x0000000000000000, 0x9502F90000000000},  // 1e10
-+    {0x0000000000000000, 0xBA43B74000000000},  // 1e11
-+    {0x0000000000000000, 0xE8D4A51000000000},  // 1e12
-+    {0x0000000000000000, 0x9184E72A00000000},  // 1e13
-+    {0x0000000000000000, 0xB5E620F480000000},  // 1e14
-+    {0x0000000000000000, 0xE35FA931A0000000},  // 1e15
-+    {0x0000000000000000, 0x8E1BC9BF04000000},  // 1e16
-+    {0x0000000000000000, 0xB1A2BC2EC5000000},  // 1e17
-+    {0x0000000000000000, 0xDE0B6B3A76400000},  // 1e18
-+    {0x0000000000000000, 0x8AC7230489E80000},  // 1e19
-+    {0x0000000000000000, 0xAD78EBC5AC620000},  // 1e20
-+    {0x0000000000000000, 0xD8D726B7177A8000},  // 1e21
-+    {0x0000000000000000, 0x878678326EAC9000},  // 1e22
-+    {0x0000000000000000, 0xA968163F0A57B400},  // 1e23
-+    {0x0000000000000000, 0xD3C21BCECCEDA100},  // 1e24
-+    {0x0000000000000000, 0x84595161401484A0},  // 1e25
-+    {0x0000000000000000, 0xA56FA5B99019A5C8},  // 1e26
-+    {0x0000000000000000, 0xCECB8F27F4200F3A},  // 1e27
-+    {0x4000000000000000, 0x813F3978F8940984},  // 1e28
-+    {0x5000000000000000, 0xA18F07D736B90BE5},  // 1e29
-+    {0xA400000000000000, 0xC9F2C9CD04674EDE},  // 1e30
-+    {0x4D00000000000000, 0xFC6F7C4045812296},  // 1e31
-+    {0xF020000000000000, 0x9DC5ADA82B70B59D},  // 1e32
-+    {0x6C28000000000000, 0xC5371912364CE305},  // 1e33
-+    {0xC732000000000000, 0xF684DF56C3E01BC6},  // 1e34
-+    {0x3C7F400000000000, 0x9A130B963A6C115C},  // 1e35
-+    {0x4B9F100000000000, 0xC097CE7BC90715B3},  // 1e36
-+    {0x1E86D40000000000, 0xF0BDC21ABB48DB20},  // 1e37
-+    {0x1314448000000000, 0x96769950B50D88F4},  // 1e38
-+    {0x17D955A000000000, 0xBC143FA4E250EB31},  // 1e39
-+    {0x5DCFAB0800000000, 0xEB194F8E1AE525FD},  // 1e40
-+    {0x5AA1CAE500000000, 0x92EFD1B8D0CF37BE},  // 1e41
-+    {0xF14A3D9E40000000, 0xB7ABC627050305AD},  // 1e42
-+    {0x6D9CCD05D0000000, 0xE596B7B0C643C719},  // 1e43
-+    {0xE4820023A2000000, 0x8F7E32CE7BEA5C6F},  // 1e44
-+    {0xDDA2802C8A800000, 0xB35DBF821AE4F38B},  // 1e45
-+    {0xD50B2037AD200000, 0xE0352F62A19E306E},  // 1e46
-+    {0x4526F422CC340000, 0x8C213D9DA502DE45},  // 1e47
-+    {0x9670B12B7F410000, 0xAF298D050E4395D6},  // 1e48
-+    {0x3C0CDD765F114000, 0xDAF3F04651D47B4C},  // 1e49
-+    {0xA5880A69FB6AC800, 0x88D8762BF324CD0F},  // 1e50
-+    {0x8EEA0D047A457A00, 0xAB0E93B6EFEE0053},  // 1e51
-+    {0x72A4904598D6D880, 0xD5D238A4ABE98068},  // 1e52
-+    {0x47A6DA2B7F864750, 0x85A36366EB71F041},  // 1e53
-+    {0x999090B65F67D924, 0xA70C3C40A64E6C51},  // 1e54
-+    {0xFFF4B4E3F741CF6D, 0xD0CF4B50CFE20765},  // 1e55
-+    {0xBFF8F10E7A8921A4, 0x82818F1281ED449F},  // 1e56
-+    {0xAFF72D52192B6A0D, 0xA321F2D7226895C7},  // 1e57
-+    {0x9BF4F8A69F764490, 0xCBEA6F8CEB02BB39},  // 1e58
-+    {0x02F236D04753D5B4, 0xFEE50B7025C36A08},  // 1e59
-+    {0x01D762422C946590, 0x9F4F2726179A2245},  // 1e60
-+    {0x424D3AD2B7B97EF5, 0xC722F0EF9D80AAD6},  // 1e61
-+    {0xD2E0898765A7DEB2, 0xF8EBAD2B84E0D58B},  // 1e62
-+    {0x63CC55F49F88EB2F, 0x9B934C3B330C8577},  // 1e63
-+    {0x3CBF6B71C76B25FB, 0xC2781F49FFCFA6D5},  // 1e64
-+    {0x8BEF464E3945EF7A, 0xF316271C7FC3908A},  // 1e65
-+    {0x97758BF0E3CBB5AC, 0x97EDD871CFDA3A56},  // 1e66
-+    {0x3D52EEED1CBEA317, 0xBDE94E8E43D0C8EC},  // 1e67
-+    {0x4CA7AAA863EE4BDD, 0xED63A231D4C4FB27},  // 1e68
-+    {0x8FE8CAA93E74EF6A, 0x945E455F24FB1CF8},  // 1e69
-+    {0xB3E2FD538E122B44, 0xB975D6B6EE39E436},  // 1e70
-+    {0x60DBBCA87196B616, 0xE7D34C64A9C85D44},  // 1e71
-+    {0xBC8955E946FE31CD, 0x90E40FBEEA1D3A4A},  // 1e72
-+    {0x6BABAB6398BDBE41, 0xB51D13AEA4A488DD},  // 1e73
-+    {0xC696963C7EED2DD1, 0xE264589A4DCDAB14},  // 1e74
-+    {0xFC1E1DE5CF543CA2, 0x8D7EB76070A08AEC},  // 1e75
-+    {0x3B25A55F43294BCB, 0xB0DE65388CC8ADA8},  // 1e76
-+    {0x49EF0EB713F39EBE, 0xDD15FE86AFFAD912},  // 1e77
-+    {0x6E3569326C784337, 0x8A2DBF142DFCC7AB},  // 1e78
-+    {0x49C2C37F07965404, 0xACB92ED9397BF996},  // 1e79
-+    {0xDC33745EC97BE906, 0xD7E77A8F87DAF7FB},  // 1e80
-+    {0x69A028BB3DED71A3, 0x86F0AC99B4E8DAFD},  // 1e81
-+    {0xC40832EA0D68CE0C, 0xA8ACD7C0222311BC},  // 1e82
-+    {0xF50A3FA490C30190, 0xD2D80DB02AABD62B},  // 1e83
-+    {0x792667C6DA79E0FA, 0x83C7088E1AAB65DB},  // 1e84
-+    {0x577001B891185938, 0xA4B8CAB1A1563F52},  // 1e85
-+    {0xED4C0226B55E6F86, 0xCDE6FD5E09ABCF26},  // 1e86
-+    {0x544F8158315B05B4, 0x80B05E5AC60B6178},  // 1e87
-+    {0x696361AE3DB1C721, 0xA0DC75F1778E39D6},  // 1e88
-+    {0x03BC3A19CD1E38E9, 0xC913936DD571C84C},  // 1e89
-+    {0x04AB48A04065C723, 0xFB5878494ACE3A5F},  // 1e90
-+    {0x62EB0D64283F9C76, 0x9D174B2DCEC0E47B},  // 1e91
-+    {0x3BA5D0BD324F8394, 0xC45D1DF942711D9A},  // 1e92
-+    {0xCA8F44EC7EE36479, 0xF5746577930D6500},  // 1e93
-+    {0x7E998B13CF4E1ECB, 0x9968BF6ABBE85F20},  // 1e94
-+    {0x9E3FEDD8C321A67E, 0xBFC2EF456AE276E8},  // 1e95
-+    {0xC5CFE94EF3EA101E, 0xEFB3AB16C59B14A2},  // 1e96
-+    {0xBBA1F1D158724A12, 0x95D04AEE3B80ECE5},  // 1e97
-+    {0x2A8A6E45AE8EDC97, 0xBB445DA9CA61281F},  // 1e98
-+    {0xF52D09D71A3293BD, 0xEA1575143CF97226},  // 1e99
-+    {0x593C2626705F9C56, 0x924D692CA61BE758},  // 1e100
-+    {0x6F8B2FB00C77836C, 0xB6E0C377CFA2E12E},  // 1e101
-+    {0x0B6DFB9C0F956447, 0xE498F455C38B997A},  // 1e102
-+    {0x4724BD4189BD5EAC, 0x8EDF98B59A373FEC},  // 1e103
-+    {0x58EDEC91EC2CB657, 0xB2977EE300C50FE7},  // 1e104
-+    {0x2F2967B66737E3ED, 0xDF3D5E9BC0F653E1},  // 1e105
-+    {0xBD79E0D20082EE74, 0x8B865B215899F46C},  // 1e106
-+    {0xECD8590680A3AA11, 0xAE67F1E9AEC07187},  // 1e107
-+    {0xE80E6F4820CC9495, 0xDA01EE641A708DE9},  // 1e108
-+    {0x3109058D147FDCDD, 0x884134FE908658B2},  // 1e109
-+    {0xBD4B46F0599FD415, 0xAA51823E34A7EEDE},  // 1e110
-+    {0x6C9E18AC7007C91A, 0xD4E5E2CDC1D1EA96},  // 1e111
-+    {0x03E2CF6BC604DDB0, 0x850FADC09923329E},  // 1e112
-+    {0x84DB8346B786151C, 0xA6539930BF6BFF45},  // 1e113
-+    {0xE612641865679A63, 0xCFE87F7CEF46FF16},  // 1e114
-+    {0x4FCB7E8F3F60C07E, 0x81F14FAE158C5F6E},  // 1e115
-+    {0xE3BE5E330F38F09D, 0xA26DA3999AEF7749},  // 1e116
-+    {0x5CADF5BFD3072CC5, 0xCB090C8001AB551C},  // 1e117
-+    {0x73D9732FC7C8F7F6, 0xFDCB4FA002162A63},  // 1e118
-+    {0x2867E7FDDCDD9AFA, 0x9E9F11C4014DDA7E},  // 1e119
-+    {0xB281E1FD541501B8, 0xC646D63501A1511D},  // 1e120
-+    {0x1F225A7CA91A4226, 0xF7D88BC24209A565},  // 1e121
-+    {0x3375788DE9B06958, 0x9AE757596946075F},  // 1e122
-+    {0x0052D6B1641C83AE, 0xC1A12D2FC3978937},  // 1e123
-+    {0xC0678C5DBD23A49A, 0xF209787BB47D6B84},  // 1e124
-+    {0xF840B7BA963646E0, 0x9745EB4D50CE6332},  // 1e125
-+    {0xB650E5A93BC3D898, 0xBD176620A501FBFF},  // 1e126
-+    {0xA3E51F138AB4CEBE, 0xEC5D3FA8CE427AFF},  // 1e127
-+    {0xC66F336C36B10137, 0x93BA47C980E98CDF},  // 1e128
-+    {0xB80B0047445D4184, 0xB8A8D9BBE123F017},  // 1e129
-+    {0xA60DC059157491E5, 0xE6D3102AD96CEC1D},  // 1e130
-+    {0x87C89837AD68DB2F, 0x9043EA1AC7E41392},  // 1e131
-+    {0x29BABE4598C311FB, 0xB454E4A179DD1877},  // 1e132
-+    {0xF4296DD6FEF3D67A, 0xE16A1DC9D8545E94},  // 1e133
-+    {0x1899E4A65F58660C, 0x8CE2529E2734BB1D},  // 1e134
-+    {0x5EC05DCFF72E7F8F, 0xB01AE745B101E9E4},  // 1e135
-+    {0x76707543F4FA1F73, 0xDC21A1171D42645D},  // 1e136
-+    {0x6A06494A791C53A8, 0x899504AE72497EBA},  // 1e137
-+    {0x0487DB9D17636892, 0xABFA45DA0EDBDE69},  // 1e138
-+    {0x45A9D2845D3C42B6, 0xD6F8D7509292D603},  // 1e139
-+    {0x0B8A2392BA45A9B2, 0x865B86925B9BC5C2},  // 1e140
-+    {0x8E6CAC7768D7141E, 0xA7F26836F282B732},  // 1e141
-+    {0x3207D795430CD926, 0xD1EF0244AF2364FF},  // 1e142
-+    {0x7F44E6BD49E807B8, 0x8335616AED761F1F},  // 1e143
-+    {0x5F16206C9C6209A6, 0xA402B9C5A8D3A6E7},  // 1e144
-+    {0x36DBA887C37A8C0F, 0xCD036837130890A1},  // 1e145
-+    {0xC2494954DA2C9789, 0x802221226BE55A64},  // 1e146
-+    {0xF2DB9BAA10B7BD6C, 0xA02AA96B06DEB0FD},  // 1e147
-+    {0x6F92829494E5ACC7, 0xC83553C5C8965D3D},  // 1e148
-+    {0xCB772339BA1F17F9, 0xFA42A8B73ABBF48C},  // 1e149
-+    {0xFF2A760414536EFB, 0x9C69A97284B578D7},  // 1e150
-+    {0xFEF5138519684ABA, 0xC38413CF25E2D70D},  // 1e151
-+    {0x7EB258665FC25D69, 0xF46518C2EF5B8CD1},  // 1e152
-+    {0xEF2F773FFBD97A61, 0x98BF2F79D5993802},  // 1e153
-+    {0xAAFB550FFACFD8FA, 0xBEEEFB584AFF8603},  // 1e154
-+    {0x95BA2A53F983CF38, 0xEEAABA2E5DBF6784},  // 1e155
-+    {0xDD945A747BF26183, 0x952AB45CFA97A0B2},  // 1e156
-+    {0x94F971119AEEF9E4, 0xBA756174393D88DF},  // 1e157
-+    {0x7A37CD5601AAB85D, 0xE912B9D1478CEB17},  // 1e158
-+    {0xAC62E055C10AB33A, 0x91ABB422CCB812EE},  // 1e159
-+    {0x577B986B314D6009, 0xB616A12B7FE617AA},  // 1e160
-+    {0xED5A7E85FDA0B80B, 0xE39C49765FDF9D94},  // 1e161
-+    {0x14588F13BE847307, 0x8E41ADE9FBEBC27D},  // 1e162
-+    {0x596EB2D8AE258FC8, 0xB1D219647AE6B31C},  // 1e163
-+    {0x6FCA5F8ED9AEF3BB, 0xDE469FBD99A05FE3},  // 1e164
-+    {0x25DE7BB9480D5854, 0x8AEC23D680043BEE},  // 1e165
-+    {0xAF561AA79A10AE6A, 0xADA72CCC20054AE9},  // 1e166
-+    {0x1B2BA1518094DA04, 0xD910F7FF28069DA4},  // 1e167
-+    {0x90FB44D2F05D0842, 0x87AA9AFF79042286},  // 1e168
-+    {0x353A1607AC744A53, 0xA99541BF57452B28},  // 1e169
-+    {0x42889B8997915CE8, 0xD3FA922F2D1675F2},  // 1e170
-+    {0x69956135FEBADA11, 0x847C9B5D7C2E09B7},  // 1e171
-+    {0x43FAB9837E699095, 0xA59BC234DB398C25},  // 1e172
-+    {0x94F967E45E03F4BB, 0xCF02B2C21207EF2E},  // 1e173
-+    {0x1D1BE0EEBAC278F5, 0x8161AFB94B44F57D},  // 1e174
-+    {0x6462D92A69731732, 0xA1BA1BA79E1632DC},  // 1e175
-+    {0x7D7B8F7503CFDCFE, 0xCA28A291859BBF93},  // 1e176
-+    {0x5CDA735244C3D43E, 0xFCB2CB35E702AF78},  // 1e177
-+    {0x3A0888136AFA64A7, 0x9DEFBF01B061ADAB},  // 1e178
-+    {0x088AAA1845B8FDD0, 0xC56BAEC21C7A1916},  // 1e179
-+    {0x8AAD549E57273D45, 0xF6C69A72A3989F5B},  // 1e180
-+    {0x36AC54E2F678864B, 0x9A3C2087A63F6399},  // 1e181
-+    {0x84576A1BB416A7DD, 0xC0CB28A98FCF3C7F},  // 1e182
-+    {0x656D44A2A11C51D5, 0xF0FDF2D3F3C30B9F},  // 1e183
-+    {0x9F644AE5A4B1B325, 0x969EB7C47859E743},  // 1e184
-+    {0x873D5D9F0DDE1FEE, 0xBC4665B596706114},  // 1e185
-+    {0xA90CB506D155A7EA, 0xEB57FF22FC0C7959},  // 1e186
-+    {0x09A7F12442D588F2, 0x9316FF75DD87CBD8},  // 1e187
-+    {0x0C11ED6D538AEB2F, 0xB7DCBF5354E9BECE},  // 1e188
-+    {0x8F1668C8A86DA5FA, 0xE5D3EF282A242E81},  // 1e189
-+    {0xF96E017D694487BC, 0x8FA475791A569D10},  // 1e190
-+    {0x37C981DCC395A9AC, 0xB38D92D760EC4455},  // 1e191
-+    {0x85BBE253F47B1417, 0xE070F78D3927556A},  // 1e192
-+    {0x93956D7478CCEC8E, 0x8C469AB843B89562},  // 1e193
-+    {0x387AC8D1970027B2, 0xAF58416654A6BABB},  // 1e194
-+    {0x06997B05FCC0319E, 0xDB2E51BFE9D0696A},  // 1e195
-+    {0x441FECE3BDF81F03, 0x88FCF317F22241E2},  // 1e196
-+    {0xD527E81CAD7626C3, 0xAB3C2FDDEEAAD25A},  // 1e197
-+    {0x8A71E223D8D3B074, 0xD60B3BD56A5586F1},  // 1e198
-+    {0xF6872D5667844E49, 0x85C7056562757456},  // 1e199
-+    {0xB428F8AC016561DB, 0xA738C6BEBB12D16C},  // 1e200
-+    {0xE13336D701BEBA52, 0xD106F86E69D785C7},  // 1e201
-+    {0xECC0024661173473, 0x82A45B450226B39C},  // 1e202
-+    {0x27F002D7F95D0190, 0xA34D721642B06084},  // 1e203
-+    {0x31EC038DF7B441F4, 0xCC20CE9BD35C78A5},  // 1e204
-+    {0x7E67047175A15271, 0xFF290242C83396CE},  // 1e205
-+    {0x0F0062C6E984D386, 0x9F79A169BD203E41},  // 1e206
-+    {0x52C07B78A3E60868, 0xC75809C42C684DD1},  // 1e207
-+    {0xA7709A56CCDF8A82, 0xF92E0C3537826145},  // 1e208
-+    {0x88A66076400BB691, 0x9BBCC7A142B17CCB},  // 1e209
-+    {0x6ACFF893D00EA435, 0xC2ABF989935DDBFE},  // 1e210
-+    {0x0583F6B8C4124D43, 0xF356F7EBF83552FE},  // 1e211
-+    {0xC3727A337A8B704A, 0x98165AF37B2153DE},  // 1e212
-+    {0x744F18C0592E4C5C, 0xBE1BF1B059E9A8D6},  // 1e213
-+    {0x1162DEF06F79DF73, 0xEDA2EE1C7064130C},  // 1e214
-+    {0x8ADDCB5645AC2BA8, 0x9485D4D1C63E8BE7},  // 1e215
-+    {0x6D953E2BD7173692, 0xB9A74A0637CE2EE1},  // 1e216
-+    {0xC8FA8DB6CCDD0437, 0xE8111C87C5C1BA99},  // 1e217
-+    {0x1D9C9892400A22A2, 0x910AB1D4DB9914A0},  // 1e218
-+    {0x2503BEB6D00CAB4B, 0xB54D5E4A127F59C8},  // 1e219
-+    {0x2E44AE64840FD61D, 0xE2A0B5DC971F303A},  // 1e220
-+    {0x5CEAECFED289E5D2, 0x8DA471A9DE737E24},  // 1e221
-+    {0x7425A83E872C5F47, 0xB10D8E1456105DAD},  // 1e222
-+    {0xD12F124E28F77719, 0xDD50F1996B947518},  // 1e223
-+    {0x82BD6B70D99AAA6F, 0x8A5296FFE33CC92F},  // 1e224
-+    {0x636CC64D1001550B, 0xACE73CBFDC0BFB7B},  // 1e225
-+    {0x3C47F7E05401AA4E, 0xD8210BEFD30EFA5A},  // 1e226
-+    {0x65ACFAEC34810A71, 0x8714A775E3E95C78},  // 1e227
-+    {0x7F1839A741A14D0D, 0xA8D9D1535CE3B396},  // 1e228
-+    {0x1EDE48111209A050, 0xD31045A8341CA07C},  // 1e229
-+    {0x934AED0AAB460432, 0x83EA2B892091E44D},  // 1e230
-+    {0xF81DA84D5617853F, 0xA4E4B66B68B65D60},  // 1e231
-+    {0x36251260AB9D668E, 0xCE1DE40642E3F4B9},  // 1e232
-+    {0xC1D72B7C6B426019, 0x80D2AE83E9CE78F3},  // 1e233
-+    {0xB24CF65B8612F81F, 0xA1075A24E4421730},  // 1e234
-+    {0xDEE033F26797B627, 0xC94930AE1D529CFC},  // 1e235
-+    {0x169840EF017DA3B1, 0xFB9B7CD9A4A7443C},  // 1e236
-+    {0x8E1F289560EE864E, 0x9D412E0806E88AA5},  // 1e237
-+    {0xF1A6F2BAB92A27E2, 0xC491798A08A2AD4E},  // 1e238
-+    {0xAE10AF696774B1DB, 0xF5B5D7EC8ACB58A2},  // 1e239
-+    {0xACCA6DA1E0A8EF29, 0x9991A6F3D6BF1765},  // 1e240
-+    {0x17FD090A58D32AF3, 0xBFF610B0CC6EDD3F},  // 1e241
-+    {0xDDFC4B4CEF07F5B0, 0xEFF394DCFF8A948E},  // 1e242
-+    {0x4ABDAF101564F98E, 0x95F83D0A1FB69CD9},  // 1e243
-+    {0x9D6D1AD41ABE37F1, 0xBB764C4CA7A4440F},  // 1e244
-+    {0x84C86189216DC5ED, 0xEA53DF5FD18D5513},  // 1e245
-+    {0x32FD3CF5B4E49BB4, 0x92746B9BE2F8552C},  // 1e246
-+    {0x3FBC8C33221DC2A1, 0xB7118682DBB66A77},  // 1e247
-+    {0x0FABAF3FEAA5334A, 0xE4D5E82392A40515},  // 1e248
-+    {0x29CB4D87F2A7400E, 0x8F05B1163BA6832D},  // 1e249
-+    {0x743E20E9EF511012, 0xB2C71D5BCA9023F8},  // 1e250
-+    {0x914DA9246B255416, 0xDF78E4B2BD342CF6},  // 1e251
-+    {0x1AD089B6C2F7548E, 0x8BAB8EEFB6409C1A},  // 1e252
-+    {0xA184AC2473B529B1, 0xAE9672ABA3D0C320},  // 1e253
-+    {0xC9E5D72D90A2741E, 0xDA3C0F568CC4F3E8},  // 1e254
-+    {0x7E2FA67C7A658892, 0x8865899617FB1871},  // 1e255
-+    {0xDDBB901B98FEEAB7, 0xAA7EEBFB9DF9DE8D},  // 1e256
-+    {0x552A74227F3EA565, 0xD51EA6FA85785631},  // 1e257
-+    {0xD53A88958F87275F, 0x8533285C936B35DE},  // 1e258
-+    {0x8A892ABAF368F137, 0xA67FF273B8460356},  // 1e259
-+    {0x2D2B7569B0432D85, 0xD01FEF10A657842C},  // 1e260
-+    {0x9C3B29620E29FC73, 0x8213F56A67F6B29B},  // 1e261
-+    {0x8349F3BA91B47B8F, 0xA298F2C501F45F42},  // 1e262
-+    {0x241C70A936219A73, 0xCB3F2F7642717713},  // 1e263
-+    {0xED238CD383AA0110, 0xFE0EFB53D30DD4D7},  // 1e264
-+    {0xF4363804324A40AA, 0x9EC95D1463E8A506},  // 1e265
-+    {0xB143C6053EDCD0D5, 0xC67BB4597CE2CE48},  // 1e266
-+    {0xDD94B7868E94050A, 0xF81AA16FDC1B81DA},  // 1e267
-+    {0xCA7CF2B4191C8326, 0x9B10A4E5E9913128},  // 1e268
-+    {0xFD1C2F611F63A3F0, 0xC1D4CE1F63F57D72},  // 1e269
-+    {0xBC633B39673C8CEC, 0xF24A01A73CF2DCCF},  // 1e270
-+    {0xD5BE0503E085D813, 0x976E41088617CA01},  // 1e271
-+    {0x4B2D8644D8A74E18, 0xBD49D14AA79DBC82},  // 1e272
-+    {0xDDF8E7D60ED1219E, 0xEC9C459D51852BA2},  // 1e273
-+    {0xCABB90E5C942B503, 0x93E1AB8252F33B45},  // 1e274
-+    {0x3D6A751F3B936243, 0xB8DA1662E7B00A17},  // 1e275
-+    {0x0CC512670A783AD4, 0xE7109BFBA19C0C9D},  // 1e276
-+    {0x27FB2B80668B24C5, 0x906A617D450187E2},  // 1e277
-+    {0xB1F9F660802DEDF6, 0xB484F9DC9641E9DA},  // 1e278
-+    {0x5E7873F8A0396973, 0xE1A63853BBD26451},  // 1e279
-+    {0xDB0B487B6423E1E8, 0x8D07E33455637EB2},  // 1e280
-+    {0x91CE1A9A3D2CDA62, 0xB049DC016ABC5E5F},  // 1e281
-+    {0x7641A140CC7810FB, 0xDC5C5301C56B75F7},  // 1e282
-+    {0xA9E904C87FCB0A9D, 0x89B9B3E11B6329BA},  // 1e283
-+    {0x546345FA9FBDCD44, 0xAC2820D9623BF429},  // 1e284
-+    {0xA97C177947AD4095, 0xD732290FBACAF133},  // 1e285
-+    {0x49ED8EABCCCC485D, 0x867F59A9D4BED6C0},  // 1e286
-+    {0x5C68F256BFFF5A74, 0xA81F301449EE8C70},  // 1e287
-+    {0x73832EEC6FFF3111, 0xD226FC195C6A2F8C},  // 1e288
- };
- 
--// --------
-+// wuffs_private_impl__f64_powers_of_10 holds powers of 10 that can be exactly
-+// represented by a float64 (what C calls a double).
-+static const double wuffs_private_impl__f64_powers_of_10[23] = {
-+    1e0,  1e1,  1e2,  1e3,  1e4,  1e5,  1e6,  1e7,  1e8,  1e9,  1e10, 1e11,
-+    1e12, 1e13, 1e14, 1e15, 1e16, 1e17, 1e18, 1e19, 1e20, 1e21, 1e22,
-+};
- 
--WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
--wuffs_base__base_64__decode(wuffs_base__slice_u8 dst,
--                            wuffs_base__slice_u8 src,
--                            bool src_closed,
--                            uint32_t options) {
--  const uint8_t* alphabet = (options & WUFFS_BASE__BASE_64__URL_ALPHABET)
--                                ? wuffs_base__base_64__decode_url
--                                : wuffs_base__base_64__decode_std;
--  wuffs_base__transform__output o;
--  uint8_t* d_ptr = dst.ptr;
--  size_t d_len = dst.len;
--  const uint8_t* s_ptr = src.ptr;
--  size_t s_len = src.len;
--  bool pad = false;
-+// ---------------- IEEE 754 Floating Point
- 
--  while (s_len >= 4) {
--    uint32_t s = wuffs_base__peek_u32le__no_bounds_check(s_ptr);
--    uint32_t s0 = alphabet[0xFF & (s >> 0)];
--    uint32_t s1 = alphabet[0xFF & (s >> 8)];
--    uint32_t s2 = alphabet[0xFF & (s >> 16)];
--    uint32_t s3 = alphabet[0xFF & (s >> 24)];
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__lossy_value_u16  //
-+wuffs_base__ieee_754_bit_representation__from_f64_to_u16_truncate(double f) {
-+  uint64_t u = 0;
-+  if (sizeof(uint64_t) == sizeof(double)) {
-+    memcpy(&u, &f, sizeof(uint64_t));
-+  }
-+  uint16_t neg = ((uint16_t)((u >> 63) << 15));
-+  u &= 0x7FFFFFFFFFFFFFFF;
-+  uint64_t exp = u >> 52;
-+  uint64_t man = u & 0x000FFFFFFFFFFFFF;
- 
--    if (((s0 | s1 | s2 | s3) & 0xC0) != 0) {
--      if (s_len > 4) {
--        o.status.repr = wuffs_base__error__bad_data;
--        goto done;
--      } else if (!src_closed) {
--        o.status.repr = wuffs_base__suspension__short_read;
--        goto done;
--      } else if ((options & WUFFS_BASE__BASE_64__DECODE_ALLOW_PADDING) &&
--                 (s_ptr[3] == '=')) {
--        pad = true;
--        if (s_ptr[2] == '=') {
--          goto src2;
--        }
--        goto src3;
--      }
--      o.status.repr = wuffs_base__error__bad_data;
--      goto done;
-+  if (exp == 0x7FF) {
-+    if (man == 0) {  // Infinity.
-+      wuffs_base__lossy_value_u16 ret;
-+      ret.value = neg | 0x7C00;
-+      ret.lossy = false;
-+      return ret;
-     }
-+    // NaN. Shift the 52 mantissa bits to 10 mantissa bits, keeping the most
-+    // significant mantissa bit (quiet vs signaling NaNs). Also set the low 9
-+    // bits of ret.value so that the 10-bit mantissa is non-zero.
-+    wuffs_base__lossy_value_u16 ret;
-+    ret.value = neg | 0x7DFF | ((uint16_t)(man >> 42));
-+    ret.lossy = false;
-+    return ret;
- 
--    if (d_len < 3) {
--      o.status.repr = wuffs_base__suspension__short_write;
--      goto done;
--    }
-+  } else if (exp > 0x40E) {  // Truncate to the largest finite f16.
-+    wuffs_base__lossy_value_u16 ret;
-+    ret.value = neg | 0x7BFF;
-+    ret.lossy = true;
-+    return ret;
- 
--    s_ptr += 4;
--    s_len -= 4;
--    s = (s0 << 18) | (s1 << 12) | (s2 << 6) | (s3 << 0);
--    *d_ptr++ = (uint8_t)(s >> 16);
--    *d_ptr++ = (uint8_t)(s >> 8);
--    *d_ptr++ = (uint8_t)(s >> 0);
--    d_len -= 3;
--  }
--
--  if (!src_closed) {
--    o.status.repr = wuffs_base__suspension__short_read;
--    goto done;
--  }
-+  } else if (exp <= 0x3E6) {  // Truncate to zero.
-+    wuffs_base__lossy_value_u16 ret;
-+    ret.value = neg;
-+    ret.lossy = (u != 0);
-+    return ret;
- 
--  if (s_len == 0) {
--    o.status.repr = NULL;
--    goto done;
--  } else if (s_len == 1) {
--    o.status.repr = wuffs_base__error__bad_data;
--    goto done;
--  } else if (s_len == 2) {
--    goto src2;
-+  } else if (exp <= 0x3F0) {  // Normal f64, subnormal f16.
-+    // Convert from a 53-bit mantissa (after realizing the implicit bit) to a
-+    // 10-bit mantissa and then adjust for the exponent.
-+    man |= 0x0010000000000000;
-+    uint32_t shift = ((uint32_t)(1051 - exp));  // 1051 = 0x3F0 + 53 - 10.
-+    uint64_t shifted_man = man >> shift;
-+    wuffs_base__lossy_value_u16 ret;
-+    ret.value = neg | ((uint16_t)shifted_man);
-+    ret.lossy = (shifted_man << shift) != man;
-+    return ret;
-   }
- 
--src3:
--  do {
--    uint32_t s = wuffs_base__peek_u24le__no_bounds_check(s_ptr);
--    uint32_t s0 = alphabet[0xFF & (s >> 0)];
--    uint32_t s1 = alphabet[0xFF & (s >> 8)];
--    uint32_t s2 = alphabet[0xFF & (s >> 16)];
--    if ((s0 & 0xC0) || (s1 & 0xC0) || (s2 & 0xC3)) {
--      o.status.repr = wuffs_base__error__bad_data;
--      goto done;
--    }
--    if (d_len < 2) {
--      o.status.repr = wuffs_base__suspension__short_write;
--      goto done;
--    }
--    s_ptr += pad ? 4 : 3;
--    s = (s0 << 18) | (s1 << 12) | (s2 << 6);
--    *d_ptr++ = (uint8_t)(s >> 16);
--    *d_ptr++ = (uint8_t)(s >> 8);
--    o.status.repr = NULL;
--    goto done;
--  } while (0);
-+  // Normal f64, normal f16.
- 
--src2:
--  do {
--    uint32_t s = wuffs_base__peek_u16le__no_bounds_check(s_ptr);
--    uint32_t s0 = alphabet[0xFF & (s >> 0)];
--    uint32_t s1 = alphabet[0xFF & (s >> 8)];
--    if ((s0 & 0xC0) || (s1 & 0xCF)) {
--      o.status.repr = wuffs_base__error__bad_data;
--      goto done;
--    }
--    if (d_len < 1) {
--      o.status.repr = wuffs_base__suspension__short_write;
--      goto done;
--    }
--    s_ptr += pad ? 4 : 2;
--    s = (s0 << 18) | (s1 << 12);
--    *d_ptr++ = (uint8_t)(s >> 16);
--    o.status.repr = NULL;
--    goto done;
--  } while (0);
-+  // Re-bias from 1023 to 15 and shift above f16's 10 mantissa bits.
-+  exp = (exp - 1008) << 10;  // 1008 = 1023 - 15 = 0x3FF - 0xF.
- 
--done:
--  o.num_dst = (size_t)(d_ptr - dst.ptr);
--  o.num_src = (size_t)(s_ptr - src.ptr);
--  return o;
-+  // Convert from a 52-bit mantissa (excluding the implicit bit) to a 10-bit
-+  // mantissa (again excluding the implicit bit). We lose some information if
-+  // any of the bottom 42 bits are non-zero.
-+  wuffs_base__lossy_value_u16 ret;
-+  ret.value = neg | ((uint16_t)exp) | ((uint16_t)(man >> 42));
-+  ret.lossy = (man << 22) != 0;
-+  return ret;
- }
- 
--WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
--wuffs_base__base_64__encode(wuffs_base__slice_u8 dst,
--                            wuffs_base__slice_u8 src,
--                            bool src_closed,
--                            uint32_t options) {
--  const uint8_t* alphabet = (options & WUFFS_BASE__BASE_64__URL_ALPHABET)
--                                ? wuffs_base__base_64__encode_url
--                                : wuffs_base__base_64__encode_std;
--  wuffs_base__transform__output o;
--  uint8_t* d_ptr = dst.ptr;
--  size_t d_len = dst.len;
--  const uint8_t* s_ptr = src.ptr;
--  size_t s_len = src.len;
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__lossy_value_u32  //
-+wuffs_base__ieee_754_bit_representation__from_f64_to_u32_truncate(double f) {
-+  uint64_t u = 0;
-+  if (sizeof(uint64_t) == sizeof(double)) {
-+    memcpy(&u, &f, sizeof(uint64_t));
-+  }
-+  uint32_t neg = ((uint32_t)(u >> 63)) << 31;
-+  u &= 0x7FFFFFFFFFFFFFFF;
-+  uint64_t exp = u >> 52;
-+  uint64_t man = u & 0x000FFFFFFFFFFFFF;
- 
--  do {
--    while (s_len >= 3) {
--      if (d_len < 4) {
--        o.status.repr = wuffs_base__suspension__short_write;
--        goto done;
--      }
--      uint32_t s = wuffs_base__peek_u24be__no_bounds_check(s_ptr);
--      s_ptr += 3;
--      s_len -= 3;
--      *d_ptr++ = alphabet[0x3F & (s >> 18)];
--      *d_ptr++ = alphabet[0x3F & (s >> 12)];
--      *d_ptr++ = alphabet[0x3F & (s >> 6)];
--      *d_ptr++ = alphabet[0x3F & (s >> 0)];
--      d_len -= 4;
-+  if (exp == 0x7FF) {
-+    if (man == 0) {  // Infinity.
-+      wuffs_base__lossy_value_u32 ret;
-+      ret.value = neg | 0x7F800000;
-+      ret.lossy = false;
-+      return ret;
-     }
-+    // NaN. Shift the 52 mantissa bits to 23 mantissa bits, keeping the most
-+    // significant mantissa bit (quiet vs signaling NaNs). Also set the low 22
-+    // bits of ret.value so that the 23-bit mantissa is non-zero.
-+    wuffs_base__lossy_value_u32 ret;
-+    ret.value = neg | 0x7FBFFFFF | ((uint32_t)(man >> 29));
-+    ret.lossy = false;
-+    return ret;
- 
--    if (!src_closed) {
--      o.status.repr = wuffs_base__suspension__short_read;
--      goto done;
--    }
-+  } else if (exp > 0x47E) {  // Truncate to the largest finite f32.
-+    wuffs_base__lossy_value_u32 ret;
-+    ret.value = neg | 0x7F7FFFFF;
-+    ret.lossy = true;
-+    return ret;
- 
--    if (s_len == 2) {
--      if (d_len <
--          ((options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) ? 4 : 3)) {
--        o.status.repr = wuffs_base__suspension__short_write;
--        goto done;
--      }
--      uint32_t s = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(s_ptr)))
--                   << 8;
--      s_ptr += 2;
--      *d_ptr++ = alphabet[0x3F & (s >> 18)];
--      *d_ptr++ = alphabet[0x3F & (s >> 12)];
--      *d_ptr++ = alphabet[0x3F & (s >> 6)];
--      if (options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) {
--        *d_ptr++ = '=';
--      }
--      o.status.repr = NULL;
--      goto done;
-+  } else if (exp <= 0x369) {  // Truncate to zero.
-+    wuffs_base__lossy_value_u32 ret;
-+    ret.value = neg;
-+    ret.lossy = (u != 0);
-+    return ret;
- 
--    } else if (s_len == 1) {
--      if (d_len <
--          ((options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) ? 4 : 2)) {
--        o.status.repr = wuffs_base__suspension__short_write;
--        goto done;
--      }
--      uint32_t s = ((uint32_t)(wuffs_base__peek_u8__no_bounds_check(s_ptr)))
--                   << 16;
--      s_ptr += 1;
--      *d_ptr++ = alphabet[0x3F & (s >> 18)];
--      *d_ptr++ = alphabet[0x3F & (s >> 12)];
--      if (options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) {
--        *d_ptr++ = '=';
--        *d_ptr++ = '=';
--      }
--      o.status.repr = NULL;
--      goto done;
-+  } else if (exp <= 0x380) {  // Normal f64, subnormal f32.
-+    // Convert from a 53-bit mantissa (after realizing the implicit bit) to a
-+    // 23-bit mantissa and then adjust for the exponent.
-+    man |= 0x0010000000000000;
-+    uint32_t shift = ((uint32_t)(926 - exp));  // 926 = 0x380 + 53 - 23.
-+    uint64_t shifted_man = man >> shift;
-+    wuffs_base__lossy_value_u32 ret;
-+    ret.value = neg | ((uint32_t)shifted_man);
-+    ret.lossy = (shifted_man << shift) != man;
-+    return ret;
-+  }
- 
--    } else {
--      o.status.repr = NULL;
--      goto done;
--    }
--  } while (0);
-+  // Normal f64, normal f32.
- 
--done:
--  o.num_dst = (size_t)(d_ptr - dst.ptr);
--  o.num_src = (size_t)(s_ptr - src.ptr);
--  return o;
-+  // Re-bias from 1023 to 127 and shift above f32's 23 mantissa bits.
-+  exp = (exp - 896) << 23;  // 896 = 1023 - 127 = 0x3FF - 0x7F.
-+
-+  // Convert from a 52-bit mantissa (excluding the implicit bit) to a 23-bit
-+  // mantissa (again excluding the implicit bit). We lose some information if
-+  // any of the bottom 29 bits are non-zero.
-+  wuffs_base__lossy_value_u32 ret;
-+  ret.value = neg | ((uint32_t)exp) | ((uint32_t)(man >> 29));
-+  ret.lossy = (man << 35) != 0;
-+  return ret;
- }
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) ||
--        // defined(WUFFS_CONFIG__MODULE__BASE) ||
--        // defined(WUFFS_CONFIG__MODULE__BASE__INTCONV)
-+// --------
- 
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
--    defined(WUFFS_CONFIG__MODULE__BASE__MAGIC)
-+#define WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE 2047
-+#define WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION 800
- 
--// ---------------- Magic Numbers
-+// WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL is the largest N such that
-+// ((10 << N) < (1 << 64)).
-+#define WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL 60
- 
--// ICO doesn't start with a magic identifier. Instead, see if the opening bytes
--// are plausibly ICO.
-+// wuffs_private_impl__high_prec_dec (abbreviated as HPD) is a fixed precision
-+// floating point decimal number, augmented with ±infinity values, but it
-+// cannot represent NaN (Not a Number).
- //
--// Callers should have already verified that (prefix_data.len >= 2) and the
--// first two bytes are 0x00.
-+// "High precision" means that the mantissa holds 800 decimal digits. 800 is
-+// WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION.
- //
--// See:
--//  - https://docs.fileformat.com/image/ico/
--static int32_t  //
--wuffs_base__magic_number_guess_fourcc__maybe_ico(
--    wuffs_base__slice_u8 prefix_data,
--    bool prefix_closed) {
--  // Allow-list for the Image Type field.
--  if (prefix_data.len < 4) {
--    return prefix_closed ? 0 : -1;
--  } else if (prefix_data.ptr[3] != 0) {
--    return 0;
--  }
--  switch (prefix_data.ptr[2]) {
--    case 0x01:  // ICO
--    case 0x02:  // CUR
--      break;
--    default:
--      return 0;
--  }
--
--  // The Number Of Images should be positive.
--  if (prefix_data.len < 6) {
--    return prefix_closed ? 0 : -1;
--  } else if ((prefix_data.ptr[4] == 0) && (prefix_data.ptr[5] == 0)) {
--    return 0;
--  }
-+// An HPD isn't for general purpose arithmetic, only for conversions to and
-+// from IEEE 754 double-precision floating point, where the largest and
-+// smallest positive, finite values are approximately 1.8e+308 and 4.9e-324.
-+// HPD exponents above +2047 mean infinity, below -2047 mean zero. The ±2047
-+// bounds are further away from zero than ±(324 + 800), where 800 and 2047 is
-+// WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION and
-+// WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE.
-+//
-+// digits[.. num_digits] are the number's digits in big-endian order. The
-+// uint8_t values are in the range [0 ..= 9], not ['0' ..= '9'], where e.g. '7'
-+// is the ASCII value 0x37.
-+//
-+// decimal_point is the index (within digits) of the decimal point. It may be
-+// negative or be larger than num_digits, in which case the explicit digits are
-+// padded with implicit zeroes.
-+//
-+// For example, if num_digits is 3 and digits is "\x07\x08\x09":
-+//  - A decimal_point of -2 means ".00789"
-+//  - A decimal_point of -1 means ".0789"
-+//  - A decimal_point of +0 means ".789"
-+//  - A decimal_point of +1 means "7.89"
-+//  - A decimal_point of +2 means "78.9"
-+//  - A decimal_point of +3 means "789."
-+//  - A decimal_point of +4 means "7890."
-+//  - A decimal_point of +5 means "78900."
-+//
-+// As above, a decimal_point higher than +2047 means that the overall value is
-+// infinity, lower than -2047 means zero.
-+//
-+// negative is a sign bit. An HPD can distinguish positive and negative zero.
-+//
-+// truncated is whether there are more than
-+// WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION digits, and at least one of those
-+// extra digits are non-zero. The existence of long-tail digits can affect
-+// rounding.
-+//
-+// The "all fields are zero" value is valid, and represents the number +0.
-+typedef struct wuffs_private_impl__high_prec_dec__struct {
-+  uint32_t num_digits;
-+  int32_t decimal_point;
-+  bool negative;
-+  bool truncated;
-+  uint8_t digits[WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION];
-+} wuffs_private_impl__high_prec_dec;
- 
--  // The first ICONDIRENTRY's fourth byte should be zero.
--  if (prefix_data.len < 10) {
--    return prefix_closed ? 0 : -1;
--  } else if (prefix_data.ptr[9] != 0) {
--    return 0;
-+// wuffs_private_impl__high_prec_dec__trim trims trailing zeroes from the
-+// h->digits[.. h->num_digits] slice. They have no benefit, since we explicitly
-+// track h->decimal_point.
-+//
-+// Preconditions:
-+//  - h is non-NULL.
-+static inline void  //
-+wuffs_private_impl__high_prec_dec__trim(wuffs_private_impl__high_prec_dec* h) {
-+  while ((h->num_digits > 0) && (h->digits[h->num_digits - 1] == 0)) {
-+    h->num_digits--;
-   }
--
--  // TODO: have a separate FourCC for CUR?
--  return 0x49434F20;  // 'ICO 'be
- }
- 
--// TGA doesn't start with a magic identifier. Instead, see if the opening bytes
--// are plausibly TGA.
-+// wuffs_private_impl__high_prec_dec__assign sets h to represent the number x.
- //
--// Callers should have already verified that (prefix_data.len >= 2) and the
--// second byte (prefix_data.ptr[1], the Color Map Type byte), is either 0x00 or
--// 0x01.
--//
--// See:
--//  - https://docs.fileformat.com/image/tga/
--//  - https://www.dca.fee.unicamp.br/~martino/disciplinas/ea978/tgaffs.pdf
--static int32_t  //
--wuffs_base__magic_number_guess_fourcc__maybe_tga(
--    wuffs_base__slice_u8 prefix_data,
--    bool prefix_closed) {
--  // Allow-list for the Image Type field.
--  if (prefix_data.len < 3) {
--    return prefix_closed ? 0 : -1;
--  }
--  switch (prefix_data.ptr[2]) {
--    case 0x01:
--    case 0x02:
--    case 0x03:
--    case 0x09:
--    case 0x0A:
--    case 0x0B:
--      break;
--    default:
--      // TODO: 0x20 and 0x21 are invalid, according to the spec, but are
--      // apparently unofficial extensions.
--      return 0;
--  }
--
--  // Allow-list for the Color Map Entry Size field (if the Color Map Type field
--  // is non-zero) or else all the Color Map fields should be zero.
--  if (prefix_data.len < 8) {
--    return prefix_closed ? 0 : -1;
--  } else if (prefix_data.ptr[1] != 0x00) {
--    switch (prefix_data.ptr[7]) {
--      case 0x0F:
--      case 0x10:
--      case 0x18:
--      case 0x20:
--        break;
--      default:
--        return 0;
--    }
--  } else if ((prefix_data.ptr[3] | prefix_data.ptr[4] | prefix_data.ptr[5] |
--              prefix_data.ptr[6] | prefix_data.ptr[7]) != 0x00) {
--    return 0;
--  }
-+// Preconditions:
-+//  - h is non-NULL.
-+static void  //
-+wuffs_private_impl__high_prec_dec__assign(wuffs_private_impl__high_prec_dec* h,
-+                                          uint64_t x,
-+                                          bool negative) {
-+  uint32_t n = 0;
- 
--  // Allow-list for the Pixel Depth field.
--  if (prefix_data.len < 17) {
--    return prefix_closed ? 0 : -1;
--  }
--  switch (prefix_data.ptr[16]) {
--    case 0x01:
--    case 0x08:
--    case 0x0F:
--    case 0x10:
--    case 0x18:
--    case 0x20:
--      break;
--    default:
--      return 0;
-+  // Set h->digits.
-+  if (x > 0) {
-+    // Calculate the digits, working right-to-left. After we determine n (how
-+    // many digits there are), copy from buf to h->digits.
-+    //
-+    // UINT64_MAX, 18446744073709551615, is 20 digits long. It can be faster to
-+    // copy a constant number of bytes than a variable number (20 instead of
-+    // n). Make buf large enough (and start writing to it from the middle) so
-+    // that can we always copy 20 bytes: the slice buf[(20-n) .. (40-n)].
-+    uint8_t buf[40] = {0};
-+    uint8_t* ptr = &buf[20];
-+    do {
-+      uint64_t remaining = x / 10;
-+      x -= remaining * 10;
-+      ptr--;
-+      *ptr = (uint8_t)x;
-+      n++;
-+      x = remaining;
-+    } while (x > 0);
-+    memcpy(h->digits, ptr, 20);
-   }
- 
--  return 0x54474120;  // 'TGA 'be
-+  // Set h's other fields.
-+  h->num_digits = n;
-+  h->decimal_point = (int32_t)n;
-+  h->negative = negative;
-+  h->truncated = false;
-+  wuffs_private_impl__high_prec_dec__trim(h);
- }
- 
--WUFFS_BASE__MAYBE_STATIC int32_t  //
--wuffs_base__magic_number_guess_fourcc(wuffs_base__slice_u8 prefix_data,
--                                      bool prefix_closed) {
--  // This is similar to (but different from):
--  //  - the magic/Magdir tables under https://github.com/file/file
--  //  - the MIME Sniffing algorithm at https://mimesniff.spec.whatwg.org/
--
--  // table holds the 'magic numbers' (which are actually variable length
--  // strings). The strings may contain NUL bytes, so the "const char* magic"
--  // value starts with the length-minus-1 of the 'magic number'.
--  //
--  // Keep it sorted by magic[1], then magic[0] descending (prioritizing longer
--  // matches) and finally by magic[2:]. When multiple entries match, the
--  // longest one wins.
--  //
--  // The fourcc field might be negated, in which case there's further
--  // specialization (see § below).
--  static struct {
--    int32_t fourcc;
--    const char* magic;
--  } table[] = {
--      {-0x30302020, "\x01\x00\x00"},              // '00  'be
--      {+0x475A2020, "\x02\x1F\x8B\x08"},          // GZ
--      {+0x5A535444, "\x03\x28\xB5\x2F\xFD"},      // ZSTD
--      {+0x425A3220, "\x02\x42\x5A\x68"},          // BZ2
--      {+0x424D5020, "\x01\x42\x4D"},              // BMP
--      {+0x47494620, "\x03\x47\x49\x46\x38"},      // GIF
--      {+0x54494646, "\x03\x49\x49\x2A\x00"},      // TIFF (little-endian)
--      {+0x54494646, "\x03\x4D\x4D\x00\x2A"},      // TIFF (big-endian)
--      {+0x4E50424D, "\x02\x50\x35\x0A"},          // NPBM (P5; *.pgm)
--      {+0x4E50424D, "\x02\x50\x36\x0A"},          // NPBM (P6; *.ppm)
--      {-0x52494646, "\x03\x52\x49\x46\x46"},      // RIFF
--      {+0x4C5A4D41, "\x04\x5D\x00\x10\x00\x00"},  // LZMA
--      {+0x4C5A4D41, "\x02\x5D\x00\x00"},          // LZMA
--      {+0x4E494520, "\x02\x6E\xC3\xAF"},          // NIE
--      {+0x514F4920, "\x03\x71\x6F\x69\x66"},      // QOI
--      {+0x5A4C4942, "\x01\x78\x9C"},              // ZLIB
--      {+0x504E4720, "\x03\x89\x50\x4E\x47"},      // PNG
--      {+0x585A2020, "\x04\xFD\x37\x7A\x58\x5A"},  // XZ
--      {+0x4A504547, "\x01\xFF\xD8"},              // JPEG
--  };
--  static const size_t table_len = sizeof(table) / sizeof(table[0]);
--
--  if (prefix_data.len == 0) {
--    return prefix_closed ? 0 : -1;
-+static wuffs_base__status  //
-+wuffs_private_impl__high_prec_dec__parse(wuffs_private_impl__high_prec_dec* h,
-+                                         wuffs_base__slice_u8 s,
-+                                         uint32_t options) {
-+  if (!h) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
--  uint8_t pre_first_byte = prefix_data.ptr[0];
-+  h->num_digits = 0;
-+  h->decimal_point = 0;
-+  h->negative = false;
-+  h->truncated = false;
- 
--  int32_t fourcc = 0;
--  size_t i;
--  for (i = 0; i < table_len; i++) {
--    uint8_t mag_first_byte = ((uint8_t)(table[i].magic[1]));
--    if (pre_first_byte < mag_first_byte) {
--      break;
--    } else if (pre_first_byte > mag_first_byte) {
--      continue;
--    }
--    fourcc = table[i].fourcc;
-+  uint8_t* p = s.ptr;
-+  uint8_t* q = s.ptr + s.len;
- 
--    uint8_t mag_remaining_len = ((uint8_t)(table[i].magic[0]));
--    if (mag_remaining_len == 0) {
--      goto match;
-+  if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
-+    for (;; p++) {
-+      if (p >= q) {
-+        return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+      } else if (*p != '_') {
-+        break;
-+      }
-     }
-+  }
- 
--    const char* mag_remaining_ptr = table[i].magic + 2;
--    uint8_t* pre_remaining_ptr = prefix_data.ptr + 1;
--    size_t pre_remaining_len = prefix_data.len - 1;
--    if (pre_remaining_len < mag_remaining_len) {
--      if (!memcmp(pre_remaining_ptr, mag_remaining_ptr, pre_remaining_len)) {
--        return prefix_closed ? 0 : -1;
--      }
-+  // Parse sign.
-+  do {
-+    if (*p == '+') {
-+      p++;
-+    } else if (*p == '-') {
-+      h->negative = true;
-+      p++;
-     } else {
--      if (!memcmp(pre_remaining_ptr, mag_remaining_ptr, mag_remaining_len)) {
--        goto match;
-+      break;
-+    }
-+    if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
-+      for (;; p++) {
-+        if (p >= q) {
-+          return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+        } else if (*p != '_') {
-+          break;
-+        }
-       }
-     }
--  }
--
--  if (prefix_data.len < 2) {
--    return prefix_closed ? 0 : -1;
--  } else if ((prefix_data.ptr[1] == 0x00) || (prefix_data.ptr[1] == 0x01)) {
--    return wuffs_base__magic_number_guess_fourcc__maybe_tga(prefix_data,
--                                                            prefix_closed);
--  }
--
--  return 0;
--
--match:
--  // Negative FourCC values (see § above) are further specialized.
--  if (fourcc < 0) {
--    fourcc = -fourcc;
-+  } while (0);
- 
--    if (fourcc == 0x52494646) {  // 'RIFF'be
--      if (prefix_data.len < 12) {
--        return prefix_closed ? 0 : -1;
-+  // Parse digits, up to (and including) a '.', 'E' or 'e'. Examples for each
-+  // limb in this if-else chain:
-+  //  - "0.789"
-+  //  - "1002.789"
-+  //  - ".789"
-+  //  - Other (invalid input).
-+  uint32_t nd = 0;
-+  int32_t dp = 0;
-+  bool no_digits_before_separator = false;
-+  if (('0' == *p) &&
-+      !(options &
-+        WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES)) {
-+    p++;
-+    for (;; p++) {
-+      if (p >= q) {
-+        goto after_all;
-+      } else if (*p ==
-+                 ((options &
-+                   WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
-+                      ? ','
-+                      : '.')) {
-+        p++;
-+        goto after_sep;
-+      } else if ((*p == 'E') || (*p == 'e')) {
-+        p++;
-+        goto after_exp;
-+      } else if ((*p != '_') ||
-+                 !(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
-+        return wuffs_base__make_status(wuffs_base__error__bad_argument);
-       }
--      uint32_t x = wuffs_base__peek_u32be__no_bounds_check(prefix_data.ptr + 8);
--      if (x == 0x57454250) {  // 'WEBP'be
--        return 0x57454250;    // 'WEBP'be
-+    }
-+
-+  } else if (('0' <= *p) && (*p <= '9')) {
-+    if (*p == '0') {
-+      for (; (p < q) && (*p == '0'); p++) {
-       }
-+    } else {
-+      h->digits[nd++] = (uint8_t)(*p - '0');
-+      dp = (int32_t)nd;
-+      p++;
-+    }
- 
--    } else if (fourcc == 0x30302020) {  // '00  'be
--      // Binary data starting with multiple 0x00 NUL bytes is quite common.
--      // Unfortunately, some file formats also don't start with a magic
--      // identifier, so we have to use heuristics (where the order matters, the
--      // same as /usr/bin/file's magic/Magdir tables) as best we can. Maybe
--      // it's TGA, ICO/CUR, etc. Maybe it's something else.
--      int32_t tga = wuffs_base__magic_number_guess_fourcc__maybe_tga(
--          prefix_data, prefix_closed);
--      if (tga != 0) {
--        return tga;
-+    for (;; p++) {
-+      if (p >= q) {
-+        goto after_all;
-+      } else if (('0' <= *p) && (*p <= '9')) {
-+        if (nd < WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION) {
-+          h->digits[nd++] = (uint8_t)(*p - '0');
-+          dp = (int32_t)nd;
-+        } else if ('0' != *p) {
-+          // Long-tail non-zeroes set the truncated bit.
-+          h->truncated = true;
-+        }
-+      } else if (*p ==
-+                 ((options &
-+                   WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
-+                      ? ','
-+                      : '.')) {
-+        p++;
-+        goto after_sep;
-+      } else if ((*p == 'E') || (*p == 'e')) {
-+        p++;
-+        goto after_exp;
-+      } else if ((*p != '_') ||
-+                 !(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
-+        return wuffs_base__make_status(wuffs_base__error__bad_argument);
-       }
--      int32_t ico = wuffs_base__magic_number_guess_fourcc__maybe_ico(
--          prefix_data, prefix_closed);
--      if (ico != 0) {
--        return ico;
-+    }
-+
-+  } else if (*p == ((options &
-+                     WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
-+                        ? ','
-+                        : '.')) {
-+    p++;
-+    no_digits_before_separator = true;
-+
-+  } else {
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+
-+after_sep:
-+  for (;; p++) {
-+    if (p >= q) {
-+      goto after_all;
-+    } else if ('0' == *p) {
-+      if (nd == 0) {
-+        // Track leading zeroes implicitly.
-+        dp--;
-+      } else if (nd < WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION) {
-+        h->digits[nd++] = (uint8_t)(*p - '0');
-       }
--      if (prefix_data.len < 4) {
--        return prefix_closed ? 0 : -1;
--      } else if ((prefix_data.ptr[2] != 0x00) &&
--                 ((prefix_data.ptr[2] >= 0x80) ||
--                  (prefix_data.ptr[3] != 0x00))) {
--        // Roughly speaking, this could be a non-degenerate (non-0-width and
--        // non-0-height) WBMP image.
--        return 0x57424D50;  // 'WBMP'be
-+    } else if (('0' < *p) && (*p <= '9')) {
-+      if (nd < WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION) {
-+        h->digits[nd++] = (uint8_t)(*p - '0');
-+      } else {
-+        // Long-tail non-zeroes set the truncated bit.
-+        h->truncated = true;
-       }
--      return 0;
-+    } else if ((*p == 'E') || (*p == 'e')) {
-+      p++;
-+      goto after_exp;
-+    } else if ((*p != '_') ||
-+               !(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
-+      return wuffs_base__make_status(wuffs_base__error__bad_argument);
-     }
-   }
--  return fourcc;
--}
--
--#endif  // !defined(WUFFS_CONFIG__MODULES) ||
--        // defined(WUFFS_CONFIG__MODULE__BASE) ||
--        // defined(WUFFS_CONFIG__MODULE__BASE__MAGIC)
--
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
--    defined(WUFFS_CONFIG__MODULE__BASE__PIXCONV)
- 
--// ---------------- Pixel Swizzler
-+after_exp:
-+  do {
-+    if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
-+      for (;; p++) {
-+        if (p >= q) {
-+          return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+        } else if (*p != '_') {
-+          break;
-+        }
-+      }
-+    }
- 
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgrw__rgb__x86_sse42(uint8_t* dst_ptr,
--                                                 size_t dst_len,
--                                                 uint8_t* dst_palette_ptr,
--                                                 size_t dst_palette_len,
--                                                 const uint8_t* src_ptr,
--                                                 size_t src_len);
-+    int32_t exp_sign = +1;
-+    if (*p == '+') {
-+      p++;
-+    } else if (*p == '-') {
-+      exp_sign = -1;
-+      p++;
-+    }
- 
--WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
--static uint64_t  //
--wuffs_base__pixel_swizzler__swap_rgbx_bgrx__x86_sse42(uint8_t* dst_ptr,
--                                                      size_t dst_len,
--                                                      uint8_t* dst_palette_ptr,
--                                                      size_t dst_palette_len,
--                                                      const uint8_t* src_ptr,
--                                                      size_t src_len);
-+    int32_t exp = 0;
-+    const int32_t exp_large = WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE +
-+                              WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION;
-+    bool saw_exp_digits = false;
-+    for (; p < q; p++) {
-+      if ((*p == '_') &&
-+          (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
-+        // No-op.
-+      } else if (('0' <= *p) && (*p <= '9')) {
-+        saw_exp_digits = true;
-+        if (exp < exp_large) {
-+          exp = (10 * exp) + ((int32_t)(*p - '0'));
-+        }
-+      } else {
-+        break;
-+      }
-+    }
-+    if (!saw_exp_digits) {
-+      return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+    }
-+    dp += exp_sign * exp;
-+  } while (0);
- 
--WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
--static uint64_t  //
--wuffs_base__pixel_swizzler__xxxx__y__x86_sse42(uint8_t* dst_ptr,
--                                               size_t dst_len,
--                                               uint8_t* dst_palette_ptr,
--                                               size_t dst_palette_len,
--                                               const uint8_t* src_ptr,
--                                               size_t src_len);
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
-+after_all:
-+  if (p != q) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  h->num_digits = nd;
-+  if (nd == 0) {
-+    if (no_digits_before_separator) {
-+      return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+    }
-+    h->decimal_point = 0;
-+  } else if (dp < -WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE) {
-+    h->decimal_point = -WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE - 1;
-+  } else if (dp > +WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE) {
-+    h->decimal_point = +WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE + 1;
-+  } else {
-+    h->decimal_point = dp;
-+  }
-+  wuffs_private_impl__high_prec_dec__trim(h);
-+  return wuffs_base__make_status(NULL);
-+}
- 
- // --------
- 
--static inline uint32_t  //
--wuffs_base__swap_u32_argb_abgr(uint32_t u) {
--  uint32_t o = u & 0xFF00FF00ul;
--  uint32_t r = u & 0x00FF0000ul;
--  uint32_t b = u & 0x000000FFul;
--  return o | (r >> 16) | (b << 16);
--}
-+// wuffs_private_impl__high_prec_dec__lshift_num_new_digits returns the number
-+// of additional decimal digits when left-shifting by shift.
-+//
-+// See below for preconditions.
-+static uint32_t  //
-+wuffs_private_impl__high_prec_dec__lshift_num_new_digits(
-+    wuffs_private_impl__high_prec_dec* h,
-+    uint32_t shift) {
-+  // Masking with 0x3F should be unnecessary (assuming the preconditions) but
-+  // it's cheap and ensures that we don't overflow the
-+  // wuffs_private_impl__hpd_left_shift array.
-+  shift &= 63;
- 
--static inline uint64_t  //
--wuffs_base__swap_u64_argb_abgr(uint64_t u) {
--  uint64_t o = u & 0xFFFF0000FFFF0000ull;
--  uint64_t r = u & 0x0000FFFF00000000ull;
--  uint64_t b = u & 0x000000000000FFFFull;
--  return o | (r >> 32) | (b << 32);
--}
-+  uint32_t x_a = wuffs_private_impl__hpd_left_shift[shift];
-+  uint32_t x_b = wuffs_private_impl__hpd_left_shift[shift + 1];
-+  uint32_t num_new_digits = x_a >> 11;
-+  uint32_t pow5_a = 0x7FF & x_a;
-+  uint32_t pow5_b = 0x7FF & x_b;
- 
--static inline uint32_t  //
--wuffs_base__color_u64__as__color_u32__swap_u32_argb_abgr(uint64_t c) {
--  uint32_t a = ((uint32_t)(0xFF & (c >> 56)));
--  uint32_t r = ((uint32_t)(0xFF & (c >> 40)));
--  uint32_t g = ((uint32_t)(0xFF & (c >> 24)));
--  uint32_t b = ((uint32_t)(0xFF & (c >> 8)));
--  return (a << 24) | (b << 16) | (g << 8) | (r << 0);
-+  const uint8_t* pow5 = &wuffs_private_impl__powers_of_5[pow5_a];
-+  uint32_t i = 0;
-+  uint32_t n = pow5_b - pow5_a;
-+  for (; i < n; i++) {
-+    if (i >= h->num_digits) {
-+      return num_new_digits - 1;
-+    } else if (h->digits[i] == pow5[i]) {
-+      continue;
-+    } else if (h->digits[i] < pow5[i]) {
-+      return num_new_digits - 1;
-+    } else {
-+      return num_new_digits;
-+    }
-+  }
-+  return num_new_digits;
- }
- 
- // --------
- 
--WUFFS_BASE__MAYBE_STATIC wuffs_base__color_u32_argb_premul  //
--wuffs_base__pixel_buffer__color_u32_at(const wuffs_base__pixel_buffer* pb,
--                                       uint32_t x,
--                                       uint32_t y) {
--  if (!pb || (x >= pb->pixcfg.private_impl.width) ||
--      (y >= pb->pixcfg.private_impl.height)) {
-+// wuffs_private_impl__high_prec_dec__rounded_integer returns the integral
-+// (non-fractional) part of h, provided that it is 18 or fewer decimal digits.
-+// For 19 or more digits, it returns UINT64_MAX. Note that:
-+//  - (1 << 53) is    9007199254740992, which has 16 decimal digits.
-+//  - (1 << 56) is   72057594037927936, which has 17 decimal digits.
-+//  - (1 << 59) is  576460752303423488, which has 18 decimal digits.
-+//  - (1 << 63) is 9223372036854775808, which has 19 decimal digits.
-+// and that IEEE 754 double precision has 52 mantissa bits.
-+//
-+// That integral part is rounded-to-even: rounding 7.5 or 8.5 both give 8.
-+//
-+// h's negative bit is ignored: rounding -8.6 returns 9.
-+//
-+// See below for preconditions.
-+static uint64_t  //
-+wuffs_private_impl__high_prec_dec__rounded_integer(
-+    wuffs_private_impl__high_prec_dec* h) {
-+  if ((h->num_digits == 0) || (h->decimal_point < 0)) {
-     return 0;
-+  } else if (h->decimal_point > 18) {
-+    return UINT64_MAX;
-   }
- 
--  if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) {
--    // TODO: support planar formats.
--    return 0;
-+  uint32_t dp = (uint32_t)(h->decimal_point);
-+  uint64_t n = 0;
-+  uint32_t i = 0;
-+  for (; i < dp; i++) {
-+    n = (10 * n) + ((i < h->num_digits) ? h->digits[i] : 0);
-   }
- 
--  size_t stride = pb->private_impl.planes[0].stride;
--  const uint8_t* row = pb->private_impl.planes[0].ptr + (stride * ((size_t)y));
-+  bool round_up = false;
-+  if (dp < h->num_digits) {
-+    round_up = h->digits[dp] >= 5;
-+    if ((h->digits[dp] == 5) && (dp + 1 == h->num_digits)) {
-+      // We are exactly halfway. If we're truncated, round up, otherwise round
-+      // to even.
-+      round_up = h->truncated ||  //
-+                 ((dp > 0) && (1 & h->digits[dp - 1]));
-+    }
-+  }
-+  if (round_up) {
-+    n++;
-+  }
- 
--  switch (pb->pixcfg.private_impl.pixfmt.repr) {
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
--      return wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x)));
-+  return n;
-+}
- 
--    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: {
--      uint8_t* palette = pb->private_impl.planes[3].ptr;
--      return wuffs_base__peek_u32le__no_bounds_check(palette +
--                                                     (4 * ((size_t)row[x])));
--    }
-+// wuffs_private_impl__high_prec_dec__small_xshift shifts h's number (where 'x'
-+// is 'l' or 'r' for left or right) by a small shift value.
-+//
-+// Preconditions:
-+//  - h is non-NULL.
-+//  - h->decimal_point is "not extreme".
-+//  - shift is non-zero.
-+//  - shift is "a small shift".
-+//
-+// "Not extreme" means within ±WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE.
-+//
-+// "A small shift" means not more than
-+// WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL.
-+//
-+// wuffs_private_impl__high_prec_dec__rounded_integer and
-+// wuffs_private_impl__high_prec_dec__lshift_num_new_digits have the same
-+// preconditions.
-+//
-+// wuffs_private_impl__high_prec_dec__lshift keeps the first two preconditions
-+// but not the last two. Its shift argument is signed and does not need to be
-+// "small": zero is a no-op, positive means left shift and negative means right
-+// shift.
- 
--      // Common formats above. Rarer formats below.
-+static void  //
-+wuffs_private_impl__high_prec_dec__small_lshift(
-+    wuffs_private_impl__high_prec_dec* h,
-+    uint32_t shift) {
-+  if (h->num_digits == 0) {
-+    return;
-+  }
-+  uint32_t num_new_digits =
-+      wuffs_private_impl__high_prec_dec__lshift_num_new_digits(h, shift);
-+  uint32_t rx = h->num_digits - 1;                   // Read  index.
-+  uint32_t wx = h->num_digits - 1 + num_new_digits;  // Write index.
-+  uint64_t n = 0;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__Y:
--      return 0xFF000000 | (0x00010101 * ((uint32_t)(row[x])));
--    case WUFFS_BASE__PIXEL_FORMAT__Y_16LE:
--      return 0xFF000000 | (0x00010101 * ((uint32_t)(row[(2 * x) + 1])));
--    case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
--      return 0xFF000000 | (0x00010101 * ((uint32_t)(row[(2 * x) + 0])));
-+  // Repeat: pick up a digit, put down a digit, right to left.
-+  while (((int32_t)rx) >= 0) {
-+    n += ((uint64_t)(h->digits[rx])) << shift;
-+    uint64_t quo = n / 10;
-+    uint64_t rem = n - (10 * quo);
-+    if (wx < WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION) {
-+      h->digits[wx] = (uint8_t)rem;
-+    } else if (rem > 0) {
-+      h->truncated = true;
-+    }
-+    n = quo;
-+    wx--;
-+    rx--;
-+  }
- 
--    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL: {
--      uint8_t* palette = pb->private_impl.planes[3].ptr;
--      return wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
--          wuffs_base__peek_u32le__no_bounds_check(palette +
--                                                  (4 * ((size_t)row[x]))));
-+  // Put down leading digits, right to left.
-+  while (n > 0) {
-+    uint64_t quo = n / 10;
-+    uint64_t rem = n - (10 * quo);
-+    if (wx < WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION) {
-+      h->digits[wx] = (uint8_t)rem;
-+    } else if (rem > 0) {
-+      h->truncated = true;
-     }
-+    n = quo;
-+    wx--;
-+  }
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
--      return wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
--          wuffs_base__peek_u16le__no_bounds_check(row + (2 * ((size_t)x))));
--    case WUFFS_BASE__PIXEL_FORMAT__BGR:
--      return 0xFF000000 |
--             wuffs_base__peek_u24le__no_bounds_check(row + (3 * ((size_t)x)));
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
--      return wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
--          wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x))));
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
--      return wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
--          wuffs_base__peek_u64le__no_bounds_check(row + (8 * ((size_t)x))));
--    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
--      return 0xFF000000 |
--             wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x)));
-+  // Finish.
-+  h->num_digits += num_new_digits;
-+  if (h->num_digits > WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION) {
-+    h->num_digits = WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION;
-+  }
-+  h->decimal_point += (int32_t)num_new_digits;
-+  wuffs_private_impl__high_prec_dec__trim(h);
-+}
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGB:
--      return wuffs_base__swap_u32_argb_abgr(
--          0xFF000000 |
--          wuffs_base__peek_u24le__no_bounds_check(row + (3 * ((size_t)x))));
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
--      return wuffs_base__swap_u32_argb_abgr(
--          wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
--              wuffs_base__peek_u32le__no_bounds_check(row +
--                                                      (4 * ((size_t)x)))));
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
--      return wuffs_base__swap_u32_argb_abgr(
--          wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x))));
--    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
--      return wuffs_base__swap_u32_argb_abgr(
--          0xFF000000 |
--          wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x))));
-+static void  //
-+wuffs_private_impl__high_prec_dec__small_rshift(
-+    wuffs_private_impl__high_prec_dec* h,
-+    uint32_t shift) {
-+  uint32_t rx = 0;  // Read  index.
-+  uint32_t wx = 0;  // Write index.
-+  uint64_t n = 0;
- 
--    default:
--      // TODO: support more formats.
-+  // Pick up enough leading digits to cover the first shift.
-+  while ((n >> shift) == 0) {
-+    if (rx < h->num_digits) {
-+      // Read a digit.
-+      n = (10 * n) + h->digits[rx++];
-+    } else if (n == 0) {
-+      // h's number used to be zero and remains zero.
-+      return;
-+    } else {
-+      // Read sufficient implicit trailing zeroes.
-+      while ((n >> shift) == 0) {
-+        n = 10 * n;
-+        rx++;
-+      }
-       break;
-+    }
-+  }
-+  h->decimal_point -= ((int32_t)(rx - 1));
-+  if (h->decimal_point < -WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE) {
-+    // After the shift, h's number is effectively zero.
-+    h->num_digits = 0;
-+    h->decimal_point = 0;
-+    h->truncated = false;
-+    return;
-   }
- 
--  return 0;
-+  // Repeat: pick up a digit, put down a digit, left to right.
-+  uint64_t mask = (((uint64_t)(1)) << shift) - 1;
-+  while (rx < h->num_digits) {
-+    uint8_t new_digit = ((uint8_t)(n >> shift));
-+    n = (10 * (n & mask)) + h->digits[rx++];
-+    h->digits[wx++] = new_digit;
-+  }
-+
-+  // Put down trailing digits, left to right.
-+  while (n > 0) {
-+    uint8_t new_digit = ((uint8_t)(n >> shift));
-+    n = 10 * (n & mask);
-+    if (wx < WUFFS_PRIVATE_IMPL__HPD__DIGITS_PRECISION) {
-+      h->digits[wx++] = new_digit;
-+    } else if (new_digit > 0) {
-+      h->truncated = true;
-+    }
-+  }
-+
-+  // Finish.
-+  h->num_digits = wx;
-+  wuffs_private_impl__high_prec_dec__trim(h);
-+}
-+
-+static void  //
-+wuffs_private_impl__high_prec_dec__lshift(wuffs_private_impl__high_prec_dec* h,
-+                                          int32_t shift) {
-+  if (shift > 0) {
-+    while (shift > +WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL) {
-+      wuffs_private_impl__high_prec_dec__small_lshift(
-+          h, WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL);
-+      shift -= WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL;
-+    }
-+    wuffs_private_impl__high_prec_dec__small_lshift(h, ((uint32_t)(+shift)));
-+  } else if (shift < 0) {
-+    while (shift < -WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL) {
-+      wuffs_private_impl__high_prec_dec__small_rshift(
-+          h, WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL);
-+      shift += WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL;
-+    }
-+    wuffs_private_impl__high_prec_dec__small_rshift(h, ((uint32_t)(-shift)));
-+  }
- }
- 
- // --------
- 
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status  //
--wuffs_base__pixel_buffer__set_color_u32_at(
--    wuffs_base__pixel_buffer* pb,
--    uint32_t x,
--    uint32_t y,
--    wuffs_base__color_u32_argb_premul color) {
--  if (!pb) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+// wuffs_private_impl__high_prec_dec__round_etc rounds h's number. For those
-+// functions that take an n argument, rounding produces at most n digits (which
-+// is not necessarily at most n decimal places). Negative n values are ignored,
-+// as well as any n greater than or equal to h's number of digits. The
-+// etc__round_just_enough function implicitly chooses an n to implement
-+// WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION.
-+//
-+// Preconditions:
-+//  - h is non-NULL.
-+//  - h->decimal_point is "not extreme".
-+//
-+// "Not extreme" means within ±WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE.
-+
-+static void  //
-+wuffs_private_impl__high_prec_dec__round_down(
-+    wuffs_private_impl__high_prec_dec* h,
-+    int32_t n) {
-+  if ((n < 0) || (h->num_digits <= (uint32_t)n)) {
-+    return;
-   }
--  if ((x >= pb->pixcfg.private_impl.width) ||
--      (y >= pb->pixcfg.private_impl.height)) {
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  h->num_digits = (uint32_t)(n);
-+  wuffs_private_impl__high_prec_dec__trim(h);
-+}
-+
-+static void  //
-+wuffs_private_impl__high_prec_dec__round_up(
-+    wuffs_private_impl__high_prec_dec* h,
-+    int32_t n) {
-+  if ((n < 0) || (h->num_digits <= (uint32_t)n)) {
-+    return;
-   }
- 
--  if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) {
--    // TODO: support planar formats.
--    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+  for (n--; n >= 0; n--) {
-+    if (h->digits[n] < 9) {
-+      h->digits[n]++;
-+      h->num_digits = (uint32_t)(n + 1);
-+      return;
-+    }
-   }
- 
--  size_t stride = pb->private_impl.planes[0].stride;
--  uint8_t* row = pb->private_impl.planes[0].ptr + (stride * ((size_t)y));
-+  // The number is all 9s. Change to a single 1 and adjust the decimal point.
-+  h->digits[0] = 1;
-+  h->num_digits = 1;
-+  h->decimal_point++;
-+}
- 
--  switch (pb->pixcfg.private_impl.pixfmt.repr) {
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
--      wuffs_base__poke_u32le__no_bounds_check(row + (4 * ((size_t)x)), color);
--      break;
-+static void  //
-+wuffs_private_impl__high_prec_dec__round_nearest(
-+    wuffs_private_impl__high_prec_dec* h,
-+    int32_t n) {
-+  if ((n < 0) || (h->num_digits <= (uint32_t)n)) {
-+    return;
-+  }
-+  bool up = h->digits[n] >= 5;
-+  if ((h->digits[n] == 5) && ((n + 1) == ((int32_t)(h->num_digits)))) {
-+    up = h->truncated ||  //
-+         ((n > 0) && ((h->digits[n - 1] & 1) != 0));
-+  }
- 
--      // Common formats above. Rarer formats below.
--
--    case WUFFS_BASE__PIXEL_FORMAT__Y:
--      wuffs_base__poke_u8__no_bounds_check(
--          row + ((size_t)x),
--          wuffs_base__color_u32_argb_premul__as__color_u8_gray(color));
--      break;
--    case WUFFS_BASE__PIXEL_FORMAT__Y_16LE:
--      wuffs_base__poke_u16le__no_bounds_check(
--          row + (2 * ((size_t)x)),
--          wuffs_base__color_u32_argb_premul__as__color_u16_gray(color));
--      break;
--    case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
--      wuffs_base__poke_u16be__no_bounds_check(
--          row + (2 * ((size_t)x)),
--          wuffs_base__color_u32_argb_premul__as__color_u16_gray(color));
--      break;
--
--    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:
--      wuffs_base__poke_u8__no_bounds_check(
--          row + ((size_t)x), wuffs_base__pixel_palette__closest_element(
--                                 wuffs_base__pixel_buffer__palette(pb),
--                                 pb->pixcfg.private_impl.pixfmt, color));
--      break;
--
--    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
--      wuffs_base__poke_u16le__no_bounds_check(
--          row + (2 * ((size_t)x)),
--          wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(color));
--      break;
--    case WUFFS_BASE__PIXEL_FORMAT__BGR:
--      wuffs_base__poke_u24le__no_bounds_check(row + (3 * ((size_t)x)), color);
--      break;
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
--      wuffs_base__poke_u32le__no_bounds_check(
--          row + (4 * ((size_t)x)),
--          wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
--              color));
--      break;
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
--      wuffs_base__poke_u64le__no_bounds_check(
--          row + (8 * ((size_t)x)),
--          wuffs_base__color_u32_argb_premul__as__color_u64_argb_nonpremul(
--              color));
--      break;
--
--    case WUFFS_BASE__PIXEL_FORMAT__RGB:
--      wuffs_base__poke_u24le__no_bounds_check(
--          row + (3 * ((size_t)x)), wuffs_base__swap_u32_argb_abgr(color));
--      break;
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
--      wuffs_base__poke_u32le__no_bounds_check(
--          row + (4 * ((size_t)x)),
--          wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
--              wuffs_base__swap_u32_argb_abgr(color)));
--      break;
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
--      wuffs_base__poke_u32le__no_bounds_check(
--          row + (4 * ((size_t)x)), wuffs_base__swap_u32_argb_abgr(color));
--      break;
--
--    default:
--      // TODO: support more formats.
--      return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+  if (up) {
-+    wuffs_private_impl__high_prec_dec__round_up(h, n);
-+  } else {
-+    wuffs_private_impl__high_prec_dec__round_down(h, n);
-   }
--
--  return wuffs_base__make_status(NULL);
- }
- 
--// --------
--
--static inline void  //
--wuffs_base__pixel_buffer__set_color_u32_fill_rect__xx(
--    wuffs_base__pixel_buffer* pb,
--    wuffs_base__rect_ie_u32 rect,
--    uint16_t color) {
--  size_t stride = pb->private_impl.planes[0].stride;
--  uint32_t width = wuffs_base__rect_ie_u32__width(&rect);
--  if ((stride == (2 * ((uint64_t)width))) && (rect.min_incl_x == 0)) {
--    uint8_t* ptr =
--        pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y));
--    uint32_t height = wuffs_base__rect_ie_u32__height(&rect);
--    size_t n;
--    for (n = ((size_t)width) * ((size_t)height); n > 0; n--) {
--      wuffs_base__poke_u16le__no_bounds_check(ptr, color);
--      ptr += 2;
--    }
-+static void  //
-+wuffs_private_impl__high_prec_dec__round_just_enough(
-+    wuffs_private_impl__high_prec_dec* h,
-+    int32_t exp2,
-+    uint64_t mantissa) {
-+  // The magic numbers 52 and 53 in this function are because IEEE 754 double
-+  // precision has 52 mantissa bits.
-+  //
-+  // Let f be the floating point number represented by exp2 and mantissa (and
-+  // also the number in h): the number (mantissa * (2 ** (exp2 - 52))).
-+  //
-+  // If f is zero or a small integer, we can return early.
-+  if ((mantissa == 0) ||
-+      ((exp2 < 53) && (h->decimal_point >= ((int32_t)(h->num_digits))))) {
-     return;
-   }
- 
--  uint32_t y;
--  for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
--    uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) +
--                   (2 * ((size_t)rect.min_incl_x));
--    uint32_t n;
--    for (n = width; n > 0; n--) {
--      wuffs_base__poke_u16le__no_bounds_check(ptr, color);
--      ptr += 2;
--    }
--  }
--}
-+  // The smallest normal f has an exp2 of -1022 and a mantissa of (1 << 52).
-+  // Subnormal numbers have the same exp2 but a smaller mantissa.
-+  static const int32_t min_incl_normal_exp2 = -1022;
-+  static const uint64_t min_incl_normal_mantissa = 0x0010000000000000ul;
- 
--static inline void  //
--wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxx(
--    wuffs_base__pixel_buffer* pb,
--    wuffs_base__rect_ie_u32 rect,
--    uint32_t color) {
--  size_t stride = pb->private_impl.planes[0].stride;
--  uint32_t width = wuffs_base__rect_ie_u32__width(&rect);
--  if ((stride == (3 * ((uint64_t)width))) && (rect.min_incl_x == 0)) {
--    uint8_t* ptr =
--        pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y));
--    uint32_t height = wuffs_base__rect_ie_u32__height(&rect);
--    size_t n;
--    for (n = ((size_t)width) * ((size_t)height); n > 0; n--) {
--      wuffs_base__poke_u24le__no_bounds_check(ptr, color);
--      ptr += 3;
--    }
--    return;
-+  // Compute lower and upper bounds such that any number between them (possibly
-+  // inclusive) will round to f. First, the lower bound. Our number f is:
-+  //   ((mantissa + 0)         * (2 ** (  exp2 - 52)))
-+  //
-+  // The next lowest floating point number is:
-+  //   ((mantissa - 1)         * (2 ** (  exp2 - 52)))
-+  // unless (mantissa - 1) drops the (1 << 52) bit and exp2 is not the
-+  // min_incl_normal_exp2. Either way, call it:
-+  //   ((l_mantissa)           * (2 ** (l_exp2 - 52)))
-+  //
-+  // The lower bound is halfway between them (noting that 52 became 53):
-+  //   (((2 * l_mantissa) + 1) * (2 ** (l_exp2 - 53)))
-+  int32_t l_exp2 = exp2;
-+  uint64_t l_mantissa = mantissa - 1;
-+  if ((exp2 > min_incl_normal_exp2) && (mantissa <= min_incl_normal_mantissa)) {
-+    l_exp2 = exp2 - 1;
-+    l_mantissa = (2 * mantissa) - 1;
-   }
-+  wuffs_private_impl__high_prec_dec lower;
-+  wuffs_private_impl__high_prec_dec__assign(&lower, (2 * l_mantissa) + 1,
-+                                            false);
-+  wuffs_private_impl__high_prec_dec__lshift(&lower, l_exp2 - 53);
- 
--  uint32_t y;
--  for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
--    uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) +
--                   (3 * ((size_t)rect.min_incl_x));
--    uint32_t n;
--    for (n = width; n > 0; n--) {
--      wuffs_base__poke_u24le__no_bounds_check(ptr, color);
--      ptr += 3;
--    }
--  }
--}
-+  // Next, the upper bound. Our number f is:
-+  //   ((mantissa + 0)       * (2 ** (exp2 - 52)))
-+  //
-+  // The next highest floating point number is:
-+  //   ((mantissa + 1)       * (2 ** (exp2 - 52)))
-+  //
-+  // The upper bound is halfway between them (noting that 52 became 53):
-+  //   (((2 * mantissa) + 1) * (2 ** (exp2 - 53)))
-+  wuffs_private_impl__high_prec_dec upper;
-+  wuffs_private_impl__high_prec_dec__assign(&upper, (2 * mantissa) + 1, false);
-+  wuffs_private_impl__high_prec_dec__lshift(&upper, exp2 - 53);
- 
--static inline void  //
--wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx(
--    wuffs_base__pixel_buffer* pb,
--    wuffs_base__rect_ie_u32 rect,
--    uint32_t color) {
--  size_t stride = pb->private_impl.planes[0].stride;
--  uint32_t width = wuffs_base__rect_ie_u32__width(&rect);
--  if ((stride == (4 * ((uint64_t)width))) && (rect.min_incl_x == 0)) {
--    uint8_t* ptr =
--        pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y));
--    uint32_t height = wuffs_base__rect_ie_u32__height(&rect);
--    size_t n;
--    for (n = ((size_t)width) * ((size_t)height); n > 0; n--) {
--      wuffs_base__poke_u32le__no_bounds_check(ptr, color);
--      ptr += 4;
--    }
--    return;
--  }
-+  // The lower and upper bounds are possible outputs only if the original
-+  // mantissa is even, so that IEEE round-to-even would round to the original
-+  // mantissa and not its neighbors.
-+  bool inclusive = (mantissa & 1) == 0;
- 
--  uint32_t y;
--  for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
--    uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) +
--                   (4 * ((size_t)rect.min_incl_x));
--    uint32_t n;
--    for (n = width; n > 0; n--) {
--      wuffs_base__poke_u32le__no_bounds_check(ptr, color);
--      ptr += 4;
--    }
--  }
--}
-+  // As we walk the digits, we want to know whether rounding up would fall
-+  // within the upper bound. This is tracked by upper_delta:
-+  //  - When -1, the digits of h and upper are the same so far.
-+  //  - When +0, we saw a difference of 1 between h and upper on a previous
-+  //    digit and subsequently only 9s for h and 0s for upper. Thus, rounding
-+  //    up may fall outside of the bound if !inclusive.
-+  //  - When +1, the difference is greater than 1 and we know that rounding up
-+  //    falls within the bound.
-+  //
-+  // This is a state machine with three states. The numerical value for each
-+  // state (-1, +0 or +1) isn't important, other than their order.
-+  int upper_delta = -1;
- 
--static inline void  //
--wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxxxxxx(
--    wuffs_base__pixel_buffer* pb,
--    wuffs_base__rect_ie_u32 rect,
--    uint64_t color) {
--  size_t stride = pb->private_impl.planes[0].stride;
--  uint32_t width = wuffs_base__rect_ie_u32__width(&rect);
--  if ((stride == (8 * ((uint64_t)width))) && (rect.min_incl_x == 0)) {
--    uint8_t* ptr =
--        pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y));
--    uint32_t height = wuffs_base__rect_ie_u32__height(&rect);
--    size_t n;
--    for (n = ((size_t)width) * ((size_t)height); n > 0; n--) {
--      wuffs_base__poke_u64le__no_bounds_check(ptr, color);
--      ptr += 8;
-+  // We can now figure out the shortest number of digits required. Walk the
-+  // digits until h has distinguished itself from lower or upper.
-+  //
-+  // The zi and zd variables are indexes and digits, for z in l (lower), h (the
-+  // number) and u (upper).
-+  //
-+  // The lower, h and upper numbers may have their decimal points at different
-+  // places. In this case, upper is the longest, so we iterate ui starting from
-+  // 0 and iterate li and hi starting from either 0 or -1.
-+  int32_t ui = 0;
-+  for (;; ui++) {
-+    // Calculate hd, the middle number's digit.
-+    int32_t hi = ui - upper.decimal_point + h->decimal_point;
-+    if (hi >= ((int32_t)(h->num_digits))) {
-+      break;
-     }
--    return;
--  }
-+    uint8_t hd = (((uint32_t)hi) < h->num_digits) ? h->digits[hi] : 0;
- 
--  uint32_t y;
--  for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
--    uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) +
--                   (8 * ((size_t)rect.min_incl_x));
--    uint32_t n;
--    for (n = width; n > 0; n--) {
--      wuffs_base__poke_u64le__no_bounds_check(ptr, color);
--      ptr += 8;
-+    // Calculate ld, the lower bound's digit.
-+    int32_t li = ui - upper.decimal_point + lower.decimal_point;
-+    uint8_t ld = (((uint32_t)li) < lower.num_digits) ? lower.digits[li] : 0;
-+
-+    // We can round down (truncate) if lower has a different digit than h or if
-+    // lower is inclusive and is exactly the result of rounding down (i.e. we
-+    // have reached the final digit of lower).
-+    bool can_round_down =
-+        (ld != hd) ||  //
-+        (inclusive && ((li + 1) == ((int32_t)(lower.num_digits))));
-+
-+    // Calculate ud, the upper bound's digit, and update upper_delta.
-+    uint8_t ud = (((uint32_t)ui) < upper.num_digits) ? upper.digits[ui] : 0;
-+    if (upper_delta < 0) {
-+      if ((hd + 1) < ud) {
-+        // For example:
-+        // h     = 12345???
-+        // upper = 12347???
-+        upper_delta = +1;
-+      } else if (hd != ud) {
-+        // For example:
-+        // h     = 12345???
-+        // upper = 12346???
-+        upper_delta = +0;
-+      }
-+    } else if (upper_delta == 0) {
-+      if ((hd != 9) || (ud != 0)) {
-+        // For example:
-+        // h     = 1234598?
-+        // upper = 1234600?
-+        upper_delta = +1;
-+      }
-     }
--  }
--}
- 
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status  //
--wuffs_base__pixel_buffer__set_color_u32_fill_rect(
--    wuffs_base__pixel_buffer* pb,
--    wuffs_base__rect_ie_u32 rect,
--    wuffs_base__color_u32_argb_premul color) {
--  if (!pb) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  } else if (wuffs_base__rect_ie_u32__is_empty(&rect)) {
--    return wuffs_base__make_status(NULL);
--  }
--  wuffs_base__rect_ie_u32 bounds =
--      wuffs_base__pixel_config__bounds(&pb->pixcfg);
--  if (!wuffs_base__rect_ie_u32__contains_rect(&bounds, rect)) {
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
-+    // We can round up if upper has a different digit than h and either upper
-+    // is inclusive or upper is bigger than the result of rounding up.
-+    bool can_round_up =
-+        (upper_delta > 0) ||    //
-+        ((upper_delta == 0) &&  //
-+         (inclusive || ((ui + 1) < ((int32_t)(upper.num_digits)))));
- 
--  if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) {
--    // TODO: support planar formats.
--    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+    // If we can round either way, round to nearest. If we can round only one
-+    // way, do it. If we can't round, continue the loop.
-+    if (can_round_down) {
-+      if (can_round_up) {
-+        wuffs_private_impl__high_prec_dec__round_nearest(h, hi + 1);
-+        return;
-+      } else {
-+        wuffs_private_impl__high_prec_dec__round_down(h, hi + 1);
-+        return;
-+      }
-+    } else {
-+      if (can_round_up) {
-+        wuffs_private_impl__high_prec_dec__round_up(h, hi + 1);
-+        return;
-+      }
-+    }
-   }
-+}
- 
--  switch (pb->pixcfg.private_impl.pixfmt.repr) {
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
--      wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx(pb, rect, color);
--      return wuffs_base__make_status(NULL);
--
--      // Common formats above. Rarer formats below.
-+// --------
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
--      wuffs_base__pixel_buffer__set_color_u32_fill_rect__xx(
--          pb, rect,
--          wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(color));
--      return wuffs_base__make_status(NULL);
-+// wuffs_private_impl__parse_number_f64_eisel_lemire produces the IEEE 754
-+// double-precision value for an exact mantissa and base-10 exponent. For
-+// example:
-+//  - when parsing "12345.678e+02", man is 12345678 and exp10 is -1.
-+//  - when parsing "-12", man is 12 and exp10 is 0. Processing the leading
-+//    minus sign is the responsibility of the caller, not this function.
-+//
-+// On success, it returns a non-negative int64_t such that the low 63 bits hold
-+// the 11-bit exponent and 52-bit mantissa.
-+//
-+// On failure, it returns a negative value.
-+//
-+// The algorithm is based on an original idea by Michael Eisel that was refined
-+// by Daniel Lemire. See
-+// https://lemire.me/blog/2020/03/10/fast-float-parsing-in-practice/
-+// and
-+// https://nigeltao.github.io/blog/2020/eisel-lemire.html
-+//
-+// Preconditions:
-+//  - man is non-zero.
-+//  - exp10 is in the range [-307 ..= 288], the same range of the
-+//    wuffs_private_impl__powers_of_10 array.
-+//
-+// The exp10 range (and the fact that man is in the range [1 ..= UINT64_MAX],
-+// approximately [1 ..= 1.85e+19]) means that (man * (10 ** exp10)) is in the
-+// range [1e-307 ..= 1.85e+307]. This is entirely within the range of normal
-+// (neither subnormal nor non-finite) f64 values: DBL_MIN and DBL_MAX are
-+// approximately 2.23e–308 and 1.80e+308.
-+static int64_t  //
-+wuffs_private_impl__parse_number_f64_eisel_lemire(uint64_t man, int32_t exp10) {
-+  // Look up the (possibly truncated) base-2 representation of (10 ** exp10).
-+  // The look-up table was constructed so that it is already normalized: the
-+  // table entry's mantissa's MSB (most significant bit) is on.
-+  const uint64_t* po10 = &wuffs_private_impl__powers_of_10[exp10 + 307][0];
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGR:
--      wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxx(pb, rect, color);
--      return wuffs_base__make_status(NULL);
-+  // Normalize the man argument. The (man != 0) precondition means that a
-+  // non-zero bit exists.
-+  uint32_t clz = wuffs_base__count_leading_zeroes_u64(man);
-+  man <<= clz;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
--      wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx(
--          pb, rect,
--          wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
--              color));
--      return wuffs_base__make_status(NULL);
-+  // Calculate the return value's base-2 exponent. We might tweak it by ±1
-+  // later, but its initial value comes from a linear scaling of exp10,
-+  // converting from power-of-10 to power-of-2, and adjusting by clz.
-+  //
-+  // The magic constants are:
-+  //  - 1087 = 1023 + 64. The 1023 is the f64 exponent bias. The 64 is because
-+  //    the look-up table uses 64-bit mantissas.
-+  //  - 217706 is such that the ratio 217706 / 65536 ≈ 3.321930 is close enough
-+  //    (over the practical range of exp10) to log(10) / log(2) ≈ 3.321928.
-+  //  - 65536 = 1<<16 is arbitrary but a power of 2, so division is a shift.
-+  //
-+  // Equality of the linearly-scaled value and the actual power-of-2, over the
-+  // range of exp10 arguments that this function accepts, is confirmed by
-+  // script/print-mpb-powers-of-10.go
-+  uint64_t ret_exp2 =
-+      ((uint64_t)(((217706 * exp10) >> 16) + 1087)) - ((uint64_t)clz);
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
--      wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxxxxxx(
--          pb, rect,
--          wuffs_base__color_u32_argb_premul__as__color_u64_argb_nonpremul(
--              color));
--      return wuffs_base__make_status(NULL);
-+  // Multiply the two mantissas. Normalization means that both mantissas are at
-+  // least (1<<63), so the 128-bit product must be at least (1<<126). The high
-+  // 64 bits of the product, x_hi, must therefore be at least (1<<62).
-+  //
-+  // As a consequence, x_hi has either 0 or 1 leading zeroes. Shifting x_hi
-+  // right by either 9 or 10 bits (depending on x_hi's MSB) will therefore
-+  // leave the top 10 MSBs (bits 54 ..= 63) off and the 11th MSB (bit 53) on.
-+  wuffs_base__multiply_u64__output x = wuffs_base__multiply_u64(man, po10[1]);
-+  uint64_t x_hi = x.hi;
-+  uint64_t x_lo = x.lo;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
--      wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx(
--          pb, rect,
--          wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
--              wuffs_base__swap_u32_argb_abgr(color)));
--      return wuffs_base__make_status(NULL);
-+  // Before we shift right by at least 9 bits, recall that the look-up table
-+  // entry was possibly truncated. We have so far only calculated a lower bound
-+  // for the product (man * e), where e is (10 ** exp10). The upper bound would
-+  // add a further (man * 1) to the 128-bit product, which overflows the lower
-+  // 64-bit limb if ((x_lo + man) < man).
-+  //
-+  // If overflow occurs, that adds 1 to x_hi. Since we're about to shift right
-+  // by at least 9 bits, that carried 1 can be ignored unless the higher 64-bit
-+  // limb's low 9 bits are all on.
-+  //
-+  // For example, parsing "9999999999999999999" will take the if-true branch
-+  // here, since:
-+  //  - x_hi = 0x4563918244F3FFFF
-+  //  - x_lo = 0x8000000000000000
-+  //  - man  = 0x8AC7230489E7FFFF
-+  if (((x_hi & 0x1FF) == 0x1FF) && ((x_lo + man) < man)) {
-+    // Refine our calculation of (man * e). Before, our approximation of e used
-+    // a "low resolution" 64-bit mantissa. Now use a "high resolution" 128-bit
-+    // mantissa. We've already calculated x = (man * bits_0_to_63_incl_of_e).
-+    // Now calculate y = (man * bits_64_to_127_incl_of_e).
-+    wuffs_base__multiply_u64__output y = wuffs_base__multiply_u64(man, po10[0]);
-+    uint64_t y_hi = y.hi;
-+    uint64_t y_lo = y.lo;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
--      wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx(
--          pb, rect, wuffs_base__swap_u32_argb_abgr(color));
--      return wuffs_base__make_status(NULL);
--  }
-+    // Merge the 128-bit x and 128-bit y, which overlap by 64 bits, to
-+    // calculate the 192-bit product of the 64-bit man by the 128-bit e.
-+    // As we exit this if-block, we only care about the high 128 bits
-+    // (merged_hi and merged_lo) of that 192-bit product.
-+    //
-+    // For example, parsing "1.234e-45" will take the if-true branch here,
-+    // since:
-+    //  - x_hi = 0x70B7E3696DB29FFF
-+    //  - x_lo = 0xE040000000000000
-+    //  - y_hi = 0x33718BBEAB0E0D7A
-+    //  - y_lo = 0xA880000000000000
-+    uint64_t merged_hi = x_hi;
-+    uint64_t merged_lo = x_lo + y_hi;
-+    if (merged_lo < x_lo) {
-+      merged_hi++;  // Carry the overflow bit.
-+    }
- 
--  uint32_t y;
--  for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
--    uint32_t x;
--    for (x = rect.min_incl_x; x < rect.max_excl_x; x++) {
--      wuffs_base__pixel_buffer__set_color_u32_at(pb, x, y, color);
-+    // The "high resolution" approximation of e is still a lower bound. Once
-+    // again, see if the upper bound is large enough to produce a different
-+    // result. This time, if it does, give up instead of reaching for an even
-+    // more precise approximation to e.
-+    //
-+    // This three-part check is similar to the two-part check that guarded the
-+    // if block that we're now in, but it has an extra term for the middle 64
-+    // bits (checking that adding 1 to merged_lo would overflow).
-+    //
-+    // For example, parsing "5.9604644775390625e-8" will take the if-true
-+    // branch here, since:
-+    //  - merged_hi = 0x7FFFFFFFFFFFFFFF
-+    //  - merged_lo = 0xFFFFFFFFFFFFFFFF
-+    //  - y_lo      = 0x4DB3FFC120988200
-+    //  - man       = 0xD3C21BCECCEDA100
-+    if (((merged_hi & 0x1FF) == 0x1FF) && ((merged_lo + 1) == 0) &&
-+        (y_lo + man < man)) {
-+      return -1;
-     }
-+
-+    // Replace the 128-bit x with merged.
-+    x_hi = merged_hi;
-+    x_lo = merged_lo;
-   }
--  return wuffs_base__make_status(NULL);
--}
- 
--// --------
-+  // As mentioned above, shifting x_hi right by either 9 or 10 bits will leave
-+  // the top 10 MSBs (bits 54 ..= 63) off and the 11th MSB (bit 53) on. If the
-+  // MSB (before shifting) was on, adjust ret_exp2 for the larger shift.
-+  //
-+  // Having bit 53 on (and higher bits off) means that ret_mantissa is a 54-bit
-+  // number.
-+  uint64_t msb = x_hi >> 63;
-+  uint64_t ret_mantissa = x_hi >> (msb + 9);
-+  ret_exp2 -= 1 ^ msb;
- 
--WUFFS_BASE__MAYBE_STATIC uint8_t  //
--wuffs_base__pixel_palette__closest_element(
--    wuffs_base__slice_u8 palette_slice,
--    wuffs_base__pixel_format palette_format,
--    wuffs_base__color_u32_argb_premul c) {
--  size_t n = palette_slice.len / 4;
--  if (n > (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
--    n = (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4);
-+  // IEEE 754 rounds to-nearest with ties rounded to-even. Rounding to-even can
-+  // be tricky. If we're half-way between two exactly representable numbers
-+  // (x's low 73 bits are zero and the next 2 bits that matter are "01"), give
-+  // up instead of trying to pick the winner.
-+  //
-+  // Technically, we could tighten the condition by changing "73" to "73 or 74,
-+  // depending on msb", but a flat "73" is simpler.
-+  //
-+  // For example, parsing "1e+23" will take the if-true branch here, since:
-+  //  - x_hi          = 0x54B40B1F852BDA00
-+  //  - ret_mantissa  = 0x002A5A058FC295ED
-+  if ((x_lo == 0) && ((x_hi & 0x1FF) == 0) && ((ret_mantissa & 3) == 1)) {
-+    return -1;
-   }
--  size_t best_index = 0;
--  uint64_t best_score = 0xFFFFFFFFFFFFFFFF;
- 
--  // Work in 16-bit color.
--  uint32_t ca = 0x101 * (0xFF & (c >> 24));
--  uint32_t cr = 0x101 * (0xFF & (c >> 16));
--  uint32_t cg = 0x101 * (0xFF & (c >> 8));
--  uint32_t cb = 0x101 * (0xFF & (c >> 0));
--
--  switch (palette_format.repr) {
--    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: {
--      bool nonpremul = palette_format.repr ==
--                       WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL;
--
--      size_t i;
--      for (i = 0; i < n; i++) {
--        // Work in 16-bit color.
--        uint32_t pb = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 0]));
--        uint32_t pg = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 1]));
--        uint32_t pr = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 2]));
--        uint32_t pa = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 3]));
--
--        // Convert to premultiplied alpha.
--        if (nonpremul && (pa != 0xFFFF)) {
--          pb = (pb * pa) / 0xFFFF;
--          pg = (pg * pa) / 0xFFFF;
--          pr = (pr * pa) / 0xFFFF;
--        }
--
--        // These deltas are conceptually int32_t (signed) but after squaring,
--        // it's equivalent to work in uint32_t (unsigned).
--        pb -= cb;
--        pg -= cg;
--        pr -= cr;
--        pa -= ca;
--        uint64_t score = ((uint64_t)(pb * pb)) + ((uint64_t)(pg * pg)) +
--                         ((uint64_t)(pr * pr)) + ((uint64_t)(pa * pa));
--        if (best_score > score) {
--          best_score = score;
--          best_index = i;
--        }
--      }
--      break;
--    }
-+  // If we're not halfway then it's rounding to-nearest. Starting with a 54-bit
-+  // number, carry the lowest bit (bit 0) up if it's on. Regardless of whether
-+  // it was on or off, shifting right by one then produces a 53-bit number. If
-+  // carrying up overflowed, shift again.
-+  ret_mantissa += ret_mantissa & 1;
-+  ret_mantissa >>= 1;
-+  // This if block is equivalent to (but benchmarks slightly faster than) the
-+  // following branchless form:
-+  //    uint64_t overflow_adjustment = ret_mantissa >> 53;
-+  //    ret_mantissa >>= overflow_adjustment;
-+  //    ret_exp2 += overflow_adjustment;
-+  //
-+  // For example, parsing "7.2057594037927933e+16" will take the if-true
-+  // branch here, since:
-+  //  - x_hi          = 0x7FFFFFFFFFFFFE80
-+  //  - ret_mantissa  = 0x0020000000000000
-+  if ((ret_mantissa >> 53) > 0) {
-+    ret_mantissa >>= 1;
-+    ret_exp2++;
-   }
- 
--  return (uint8_t)best_index;
-+  // Starting with a 53-bit number, IEEE 754 double-precision normal numbers
-+  // have an implicit mantissa bit. Mask that away and keep the low 52 bits.
-+  ret_mantissa &= 0x000FFFFFFFFFFFFF;
-+
-+  // Pack the bits and return.
-+  return ((int64_t)(ret_mantissa | (ret_exp2 << 52)));
- }
- 
- // --------
- 
--static inline uint32_t  //
--wuffs_base__composite_nonpremul_nonpremul_u32_axxx(uint32_t dst_nonpremul,
--                                                   uint32_t src_nonpremul) {
--  // Extract 16-bit color components.
--  //
--  // If the destination is transparent then SRC_OVER is equivalent to SRC: just
--  // return src_nonpremul. This isn't just an optimization (skipping the rest
--  // of the function's computation). It also preserves the nonpremul
--  // distinction between e.g. transparent red and transparent blue that would
--  // otherwise be lost by converting from nonpremul to premul and back.
--  uint32_t da = 0x101 * (0xFF & (dst_nonpremul >> 24));
--  if (da == 0) {
--    return src_nonpremul;
--  }
--  uint32_t dr = 0x101 * (0xFF & (dst_nonpremul >> 16));
--  uint32_t dg = 0x101 * (0xFF & (dst_nonpremul >> 8));
--  uint32_t db = 0x101 * (0xFF & (dst_nonpremul >> 0));
--  uint32_t sa = 0x101 * (0xFF & (src_nonpremul >> 24));
--  uint32_t sr = 0x101 * (0xFF & (src_nonpremul >> 16));
--  uint32_t sg = 0x101 * (0xFF & (src_nonpremul >> 8));
--  uint32_t sb = 0x101 * (0xFF & (src_nonpremul >> 0));
--
--  // Convert dst from nonpremul to premul.
--  dr = (dr * da) / 0xFFFF;
--  dg = (dg * da) / 0xFFFF;
--  db = (db * da) / 0xFFFF;
-+static wuffs_base__result_f64  //
-+wuffs_private_impl__parse_number_f64_special(wuffs_base__slice_u8 s,
-+                                             uint32_t options) {
-+  do {
-+    if (options & WUFFS_BASE__PARSE_NUMBER_FXX__REJECT_INF_AND_NAN) {
-+      goto fail;
-+    }
- 
--  // Calculate the inverse of the src-alpha: how much of the dst to keep.
--  uint32_t ia = 0xFFFF - sa;
-+    uint8_t* p = s.ptr;
-+    uint8_t* q = s.ptr + s.len;
- 
--  // Composite src (nonpremul) over dst (premul).
--  da = sa + ((da * ia) / 0xFFFF);
--  dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
--  dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
--  db = ((sb * sa) + (db * ia)) / 0xFFFF;
-+    for (; (p < q) && (*p == '_'); p++) {
-+    }
-+    if (p >= q) {
-+      goto fail;
-+    }
- 
--  // Convert dst from premul to nonpremul.
--  if (da != 0) {
--    dr = (dr * 0xFFFF) / da;
--    dg = (dg * 0xFFFF) / da;
--    db = (db * 0xFFFF) / da;
--  }
-+    // Parse sign.
-+    bool negative = false;
-+    do {
-+      if (*p == '+') {
-+        p++;
-+      } else if (*p == '-') {
-+        negative = true;
-+        p++;
-+      } else {
-+        break;
-+      }
-+      for (; (p < q) && (*p == '_'); p++) {
-+      }
-+    } while (0);
-+    if (p >= q) {
-+      goto fail;
-+    }
- 
--  // Convert from 16-bit color to 8-bit color.
--  da >>= 8;
--  dr >>= 8;
--  dg >>= 8;
--  db >>= 8;
-+    bool nan = false;
-+    switch (p[0]) {
-+      case 'I':
-+      case 'i':
-+        if (((q - p) < 3) ||                     //
-+            ((p[1] != 'N') && (p[1] != 'n')) ||  //
-+            ((p[2] != 'F') && (p[2] != 'f'))) {
-+          goto fail;
-+        }
-+        p += 3;
- 
--  // Combine components.
--  return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
--}
-+        if ((p >= q) || (*p == '_')) {
-+          break;
-+        } else if (((q - p) < 5) ||                     //
-+                   ((p[0] != 'I') && (p[0] != 'i')) ||  //
-+                   ((p[1] != 'N') && (p[1] != 'n')) ||  //
-+                   ((p[2] != 'I') && (p[2] != 'i')) ||  //
-+                   ((p[3] != 'T') && (p[3] != 't')) ||  //
-+                   ((p[4] != 'Y') && (p[4] != 'y'))) {
-+          goto fail;
-+        }
-+        p += 5;
- 
--static inline uint64_t  //
--wuffs_base__composite_nonpremul_nonpremul_u64_axxx(uint64_t dst_nonpremul,
--                                                   uint64_t src_nonpremul) {
--  // Extract components.
--  //
--  // If the destination is transparent then SRC_OVER is equivalent to SRC: just
--  // return src_nonpremul. This isn't just an optimization (skipping the rest
--  // of the function's computation). It also preserves the nonpremul
--  // distinction between e.g. transparent red and transparent blue that would
--  // otherwise be lost by converting from nonpremul to premul and back.
--  uint64_t da = 0xFFFF & (dst_nonpremul >> 48);
--  if (da == 0) {
--    return src_nonpremul;
--  }
--  uint64_t dr = 0xFFFF & (dst_nonpremul >> 32);
--  uint64_t dg = 0xFFFF & (dst_nonpremul >> 16);
--  uint64_t db = 0xFFFF & (dst_nonpremul >> 0);
--  uint64_t sa = 0xFFFF & (src_nonpremul >> 48);
--  uint64_t sr = 0xFFFF & (src_nonpremul >> 32);
--  uint64_t sg = 0xFFFF & (src_nonpremul >> 16);
--  uint64_t sb = 0xFFFF & (src_nonpremul >> 0);
-+        if ((p >= q) || (*p == '_')) {
-+          break;
-+        }
-+        goto fail;
- 
--  // Convert dst from nonpremul to premul.
--  dr = (dr * da) / 0xFFFF;
--  dg = (dg * da) / 0xFFFF;
--  db = (db * da) / 0xFFFF;
-+      case 'N':
-+      case 'n':
-+        if (((q - p) < 3) ||                     //
-+            ((p[1] != 'A') && (p[1] != 'a')) ||  //
-+            ((p[2] != 'N') && (p[2] != 'n'))) {
-+          goto fail;
-+        }
-+        p += 3;
- 
--  // Calculate the inverse of the src-alpha: how much of the dst to keep.
--  uint64_t ia = 0xFFFF - sa;
-+        if ((p >= q) || (*p == '_')) {
-+          nan = true;
-+          break;
-+        }
-+        goto fail;
- 
--  // Composite src (nonpremul) over dst (premul).
--  da = sa + ((da * ia) / 0xFFFF);
--  dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
--  dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
--  db = ((sb * sa) + (db * ia)) / 0xFFFF;
-+      default:
-+        goto fail;
-+    }
- 
--  // Convert dst from premul to nonpremul.
--  if (da != 0) {
--    dr = (dr * 0xFFFF) / da;
--    dg = (dg * 0xFFFF) / da;
--    db = (db * 0xFFFF) / da;
--  }
-+    // Finish.
-+    for (; (p < q) && (*p == '_'); p++) {
-+    }
-+    if (p != q) {
-+      goto fail;
-+    }
-+    wuffs_base__result_f64 ret;
-+    ret.status.repr = NULL;
-+    ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(
-+        (nan ? 0x7FFFFFFFFFFFFFFF : 0x7FF0000000000000) |
-+        (negative ? 0x8000000000000000 : 0));
-+    return ret;
-+  } while (0);
- 
--  // Combine components.
--  return (db << 0) | (dg << 16) | (dr << 32) | (da << 48);
-+fail:
-+  do {
-+    wuffs_base__result_f64 ret;
-+    ret.status.repr = wuffs_base__error__bad_argument;
-+    ret.value = 0;
-+    return ret;
-+  } while (0);
- }
- 
--static inline uint32_t  //
--wuffs_base__composite_nonpremul_premul_u32_axxx(uint32_t dst_nonpremul,
--                                                uint32_t src_premul) {
--  // Extract 16-bit color components.
--  uint32_t da = 0x101 * (0xFF & (dst_nonpremul >> 24));
--  uint32_t dr = 0x101 * (0xFF & (dst_nonpremul >> 16));
--  uint32_t dg = 0x101 * (0xFF & (dst_nonpremul >> 8));
--  uint32_t db = 0x101 * (0xFF & (dst_nonpremul >> 0));
--  uint32_t sa = 0x101 * (0xFF & (src_premul >> 24));
--  uint32_t sr = 0x101 * (0xFF & (src_premul >> 16));
--  uint32_t sg = 0x101 * (0xFF & (src_premul >> 8));
--  uint32_t sb = 0x101 * (0xFF & (src_premul >> 0));
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__result_f64  //
-+wuffs_private_impl__high_prec_dec__to_f64(wuffs_private_impl__high_prec_dec* h,
-+                                          uint32_t options) {
-+  do {
-+    // powers converts decimal powers of 10 to binary powers of 2. For example,
-+    // (10000 >> 13) is 1. It stops before the elements exceed 60, also known
-+    // as WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL.
-+    //
-+    // This rounds down (1<<13 is a lower bound for 1e4). Adding 1 to the array
-+    // element value rounds up (1<<14 is an upper bound for 1e4) while staying
-+    // at or below WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL.
-+    //
-+    // When starting in the range [1e+1 .. 1e+2] (i.e. h->decimal_point == +2),
-+    // powers[2] == 6 and so:
-+    //  - Right shifting by 6+0 produces the range [10/64 .. 100/64] =
-+    //    [0.156250 .. 1.56250]. The resultant h->decimal_point is +0 or +1.
-+    //  - Right shifting by 6+1 produces the range [10/128 .. 100/128] =
-+    //    [0.078125 .. 0.78125]. The resultant h->decimal_point is -1 or -0.
-+    //
-+    // When starting in the range [1e-3 .. 1e-2] (i.e. h->decimal_point == -2),
-+    // powers[2] == 6 and so:
-+    //  - Left shifting by 6+0 produces the range [0.001*64 .. 0.01*64] =
-+    //    [0.064 .. 0.64]. The resultant h->decimal_point is -1 or -0.
-+    //  - Left shifting by 6+1 produces the range [0.001*128 .. 0.01*128] =
-+    //    [0.128 .. 1.28]. The resultant h->decimal_point is +0 or +1.
-+    //
-+    // Thus, when targeting h->decimal_point being +0 or +1, use (powers[n]+0)
-+    // when right shifting but (powers[n]+1) when left shifting.
-+    static const uint32_t num_powers = 19;
-+    static const uint8_t powers[19] = {
-+        0,  3,  6,  9,  13, 16, 19, 23, 26, 29,  //
-+        33, 36, 39, 43, 46, 49, 53, 56, 59,      //
-+    };
- 
--  // Convert dst from nonpremul to premul.
--  dr = (dr * da) / 0xFFFF;
--  dg = (dg * da) / 0xFFFF;
--  db = (db * da) / 0xFFFF;
-+    // Handle zero and obvious extremes. The largest and smallest positive
-+    // finite f64 values are approximately 1.8e+308 and 4.9e-324.
-+    if ((h->num_digits == 0) || (h->decimal_point < -326)) {
-+      goto zero;
-+    } else if (h->decimal_point > 310) {
-+      goto infinity;
-+    }
- 
--  // Calculate the inverse of the src-alpha: how much of the dst to keep.
--  uint32_t ia = 0xFFFF - sa;
-+    // Try the fast Eisel-Lemire algorithm again. Calculating the (man, exp10)
-+    // pair from the high_prec_dec h is more correct but slower than the
-+    // approach taken in wuffs_base__parse_number_f64. The latter is optimized
-+    // for the common cases (e.g. assuming no underscores or a leading '+'
-+    // sign) rather than the full set of cases allowed by the Wuffs API.
-+    //
-+    // When we have 19 or fewer mantissa digits, run Eisel-Lemire once (trying
-+    // for an exact result). When we have more than 19 mantissa digits, run it
-+    // twice to get a lower and upper bound. We still have an exact result
-+    // (within f64's rounding margin) if both bounds are equal (and valid).
-+    uint32_t i_max = h->num_digits;
-+    if (i_max > 19) {
-+      i_max = 19;
-+    }
-+    int32_t exp10 = h->decimal_point - ((int32_t)i_max);
-+    if ((-307 <= exp10) && (exp10 <= 288)) {
-+      uint64_t man = 0;
-+      uint32_t i;
-+      for (i = 0; i < i_max; i++) {
-+        man = (10 * man) + h->digits[i];
-+      }
-+      while (man != 0) {  // The 'while' is just an 'if' that we can 'break'.
-+        int64_t r0 =
-+            wuffs_private_impl__parse_number_f64_eisel_lemire(man + 0, exp10);
-+        if (r0 < 0) {
-+          break;
-+        } else if (h->num_digits > 19) {
-+          int64_t r1 =
-+              wuffs_private_impl__parse_number_f64_eisel_lemire(man + 1, exp10);
-+          if (r1 != r0) {
-+            break;
-+          }
-+        }
-+        wuffs_base__result_f64 ret;
-+        ret.status.repr = NULL;
-+        ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(
-+            ((uint64_t)r0) | (((uint64_t)(h->negative)) << 63));
-+        return ret;
-+      }
-+    }
- 
--  // Composite src (premul) over dst (premul).
--  da = sa + ((da * ia) / 0xFFFF);
--  dr = sr + ((dr * ia) / 0xFFFF);
--  dg = sg + ((dg * ia) / 0xFFFF);
--  db = sb + ((db * ia) / 0xFFFF);
-+    // When Eisel-Lemire fails, fall back to Simple Decimal Conversion. See
-+    // https://nigeltao.github.io/blog/2020/parse-number-f64-simple.html
-+    //
-+    // Scale by powers of 2 until we're in the range [0.1 .. 10]. Equivalently,
-+    // that h->decimal_point is +0 or +1.
-+    //
-+    // First we shift right while at or above 10...
-+    const int32_t f64_bias = -1023;
-+    int32_t exp2 = 0;
-+    while (h->decimal_point > 1) {
-+      uint32_t n = (uint32_t)(+h->decimal_point);
-+      uint32_t shift = (n < num_powers)
-+                           ? powers[n]
-+                           : WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL;
- 
--  // Convert dst from premul to nonpremul.
--  if (da != 0) {
--    dr = (dr * 0xFFFF) / da;
--    dg = (dg * 0xFFFF) / da;
--    db = (db * 0xFFFF) / da;
--  }
-+      wuffs_private_impl__high_prec_dec__small_rshift(h, shift);
-+      if (h->decimal_point < -WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE) {
-+        goto zero;
-+      }
-+      exp2 += (int32_t)shift;
-+    }
-+    // ...then we shift left while below 0.1.
-+    while (h->decimal_point < 0) {
-+      uint32_t shift;
-+      uint32_t n = (uint32_t)(-h->decimal_point);
-+      shift = (n < num_powers)
-+                  // The +1 is per "when targeting h->decimal_point being +0 or
-+                  // +1... when left shifting" in the powers comment above.
-+                  ? (powers[n] + 1u)
-+                  : WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL;
- 
--  // Convert from 16-bit color to 8-bit color.
--  da >>= 8;
--  dr >>= 8;
--  dg >>= 8;
--  db >>= 8;
-+      wuffs_private_impl__high_prec_dec__small_lshift(h, shift);
-+      if (h->decimal_point > +WUFFS_PRIVATE_IMPL__HPD__DECIMAL_POINT__RANGE) {
-+        goto infinity;
-+      }
-+      exp2 -= (int32_t)shift;
-+    }
- 
--  // Combine components.
--  return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
--}
-+    // To get from "in the range [0.1 .. 10]" to "in the range [1 .. 2]" (which
-+    // will give us our exponent in base-2), the mantissa's first 3 digits will
-+    // determine the final left shift, equal to 52 (the number of explicit f64
-+    // bits) plus an additional adjustment.
-+    int man3 = (100 * h->digits[0]) +
-+               ((h->num_digits > 1) ? (10 * h->digits[1]) : 0) +
-+               ((h->num_digits > 2) ? h->digits[2] : 0);
-+    int32_t additional_lshift = 0;
-+    if (h->decimal_point == 0) {  // The value is in [0.1 .. 1].
-+      if (man3 < 125) {
-+        additional_lshift = +4;
-+      } else if (man3 < 250) {
-+        additional_lshift = +3;
-+      } else if (man3 < 500) {
-+        additional_lshift = +2;
-+      } else {
-+        additional_lshift = +1;
-+      }
-+    } else {  // The value is in [1 .. 10].
-+      if (man3 < 200) {
-+        additional_lshift = -0;
-+      } else if (man3 < 400) {
-+        additional_lshift = -1;
-+      } else if (man3 < 800) {
-+        additional_lshift = -2;
-+      } else {
-+        additional_lshift = -3;
-+      }
-+    }
-+    exp2 -= additional_lshift;
-+    uint32_t final_lshift = (uint32_t)(52 + additional_lshift);
- 
--static inline uint64_t  //
--wuffs_base__composite_nonpremul_premul_u64_axxx(uint64_t dst_nonpremul,
--                                                uint64_t src_premul) {
--  // Extract components.
--  uint64_t da = 0xFFFF & (dst_nonpremul >> 48);
--  uint64_t dr = 0xFFFF & (dst_nonpremul >> 32);
--  uint64_t dg = 0xFFFF & (dst_nonpremul >> 16);
--  uint64_t db = 0xFFFF & (dst_nonpremul >> 0);
--  uint64_t sa = 0xFFFF & (src_premul >> 48);
--  uint64_t sr = 0xFFFF & (src_premul >> 32);
--  uint64_t sg = 0xFFFF & (src_premul >> 16);
--  uint64_t sb = 0xFFFF & (src_premul >> 0);
-+    // The minimum normal exponent is (f64_bias + 1).
-+    while ((f64_bias + 1) > exp2) {
-+      uint32_t n = (uint32_t)((f64_bias + 1) - exp2);
-+      if (n > WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL) {
-+        n = WUFFS_PRIVATE_IMPL__HPD__SHIFT__MAX_INCL;
-+      }
-+      wuffs_private_impl__high_prec_dec__small_rshift(h, n);
-+      exp2 += (int32_t)n;
-+    }
- 
--  // Convert dst from nonpremul to premul.
--  dr = (dr * da) / 0xFFFF;
--  dg = (dg * da) / 0xFFFF;
--  db = (db * da) / 0xFFFF;
-+    // Check for overflow.
-+    if ((exp2 - f64_bias) >= 0x07FF) {  // (1 << 11) - 1.
-+      goto infinity;
-+    }
- 
--  // Calculate the inverse of the src-alpha: how much of the dst to keep.
--  uint64_t ia = 0xFFFF - sa;
-+    // Extract 53 bits for the mantissa (in base-2).
-+    wuffs_private_impl__high_prec_dec__small_lshift(h, final_lshift);
-+    uint64_t man2 = wuffs_private_impl__high_prec_dec__rounded_integer(h);
- 
--  // Composite src (premul) over dst (premul).
--  da = sa + ((da * ia) / 0xFFFF);
--  dr = sr + ((dr * ia) / 0xFFFF);
--  dg = sg + ((dg * ia) / 0xFFFF);
--  db = sb + ((db * ia) / 0xFFFF);
-+    // Rounding might have added one bit. If so, shift and re-check overflow.
-+    if ((man2 >> 53) != 0) {
-+      man2 >>= 1;
-+      exp2++;
-+      if ((exp2 - f64_bias) >= 0x07FF) {  // (1 << 11) - 1.
-+        goto infinity;
-+      }
-+    }
- 
--  // Convert dst from premul to nonpremul.
--  if (da != 0) {
--    dr = (dr * 0xFFFF) / da;
--    dg = (dg * 0xFFFF) / da;
--    db = (db * 0xFFFF) / da;
--  }
-+    // Handle subnormal numbers.
-+    if ((man2 >> 52) == 0) {
-+      exp2 = f64_bias;
-+    }
- 
--  // Combine components.
--  return (db << 0) | (dg << 16) | (dr << 32) | (da << 48);
--}
-+    // Pack the bits and return.
-+    uint64_t exp2_bits =
-+        (uint64_t)((exp2 - f64_bias) & 0x07FF);              // (1 << 11) - 1.
-+    uint64_t bits = (man2 & 0x000FFFFFFFFFFFFF) |            // (1 << 52) - 1.
-+                    (exp2_bits << 52) |                      //
-+                    (h->negative ? 0x8000000000000000 : 0);  // (1 << 63).
- 
--static inline uint32_t  //
--wuffs_base__composite_premul_nonpremul_u32_axxx(uint32_t dst_premul,
--                                                uint32_t src_nonpremul) {
--  // Extract 16-bit color components.
--  uint32_t da = 0x101 * (0xFF & (dst_premul >> 24));
--  uint32_t dr = 0x101 * (0xFF & (dst_premul >> 16));
--  uint32_t dg = 0x101 * (0xFF & (dst_premul >> 8));
--  uint32_t db = 0x101 * (0xFF & (dst_premul >> 0));
--  uint32_t sa = 0x101 * (0xFF & (src_nonpremul >> 24));
--  uint32_t sr = 0x101 * (0xFF & (src_nonpremul >> 16));
--  uint32_t sg = 0x101 * (0xFF & (src_nonpremul >> 8));
--  uint32_t sb = 0x101 * (0xFF & (src_nonpremul >> 0));
-+    wuffs_base__result_f64 ret;
-+    ret.status.repr = NULL;
-+    ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(bits);
-+    return ret;
-+  } while (0);
- 
--  // Calculate the inverse of the src-alpha: how much of the dst to keep.
--  uint32_t ia = 0xFFFF - sa;
-+zero:
-+  do {
-+    uint64_t bits = h->negative ? 0x8000000000000000 : 0;
- 
--  // Composite src (nonpremul) over dst (premul).
--  da = sa + ((da * ia) / 0xFFFF);
--  dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
--  dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
--  db = ((sb * sa) + (db * ia)) / 0xFFFF;
-+    wuffs_base__result_f64 ret;
-+    ret.status.repr = NULL;
-+    ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(bits);
-+    return ret;
-+  } while (0);
- 
--  // Convert from 16-bit color to 8-bit color.
--  da >>= 8;
--  dr >>= 8;
--  dg >>= 8;
--  db >>= 8;
-+infinity:
-+  do {
-+    if (options & WUFFS_BASE__PARSE_NUMBER_FXX__REJECT_INF_AND_NAN) {
-+      wuffs_base__result_f64 ret;
-+      ret.status.repr = wuffs_base__error__bad_argument;
-+      ret.value = 0;
-+      return ret;
-+    }
- 
--  // Combine components.
--  return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
--}
-+    uint64_t bits = h->negative ? 0xFFF0000000000000 : 0x7FF0000000000000;
- 
--static inline uint64_t  //
--wuffs_base__composite_premul_nonpremul_u64_axxx(uint64_t dst_premul,
--                                                uint64_t src_nonpremul) {
--  // Extract components.
--  uint64_t da = 0xFFFF & (dst_premul >> 48);
--  uint64_t dr = 0xFFFF & (dst_premul >> 32);
--  uint64_t dg = 0xFFFF & (dst_premul >> 16);
--  uint64_t db = 0xFFFF & (dst_premul >> 0);
--  uint64_t sa = 0xFFFF & (src_nonpremul >> 48);
--  uint64_t sr = 0xFFFF & (src_nonpremul >> 32);
--  uint64_t sg = 0xFFFF & (src_nonpremul >> 16);
--  uint64_t sb = 0xFFFF & (src_nonpremul >> 0);
--
--  // Calculate the inverse of the src-alpha: how much of the dst to keep.
--  uint64_t ia = 0xFFFF - sa;
--
--  // Composite src (nonpremul) over dst (premul).
--  da = sa + ((da * ia) / 0xFFFF);
--  dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
--  dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
--  db = ((sb * sa) + (db * ia)) / 0xFFFF;
--
--  // Combine components.
--  return (db << 0) | (dg << 16) | (dr << 32) | (da << 48);
-+    wuffs_base__result_f64 ret;
-+    ret.status.repr = NULL;
-+    ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(bits);
-+    return ret;
-+  } while (0);
- }
- 
--static inline uint32_t  //
--wuffs_base__composite_premul_premul_u32_axxx(uint32_t dst_premul,
--                                             uint32_t src_premul) {
--  // Extract 16-bit color components.
--  uint32_t da = 0x101 * (0xFF & (dst_premul >> 24));
--  uint32_t dr = 0x101 * (0xFF & (dst_premul >> 16));
--  uint32_t dg = 0x101 * (0xFF & (dst_premul >> 8));
--  uint32_t db = 0x101 * (0xFF & (dst_premul >> 0));
--  uint32_t sa = 0x101 * (0xFF & (src_premul >> 24));
--  uint32_t sr = 0x101 * (0xFF & (src_premul >> 16));
--  uint32_t sg = 0x101 * (0xFF & (src_premul >> 8));
--  uint32_t sb = 0x101 * (0xFF & (src_premul >> 0));
--
--  // Calculate the inverse of the src-alpha: how much of the dst to keep.
--  uint32_t ia = 0xFFFF - sa;
--
--  // Composite src (premul) over dst (premul).
--  da = sa + ((da * ia) / 0xFFFF);
--  dr = sr + ((dr * ia) / 0xFFFF);
--  dg = sg + ((dg * ia) / 0xFFFF);
--  db = sb + ((db * ia) / 0xFFFF);
--
--  // Convert from 16-bit color to 8-bit color.
--  da >>= 8;
--  dr >>= 8;
--  dg >>= 8;
--  db >>= 8;
--
--  // Combine components.
--  return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
-+static inline bool  //
-+wuffs_private_impl__is_decimal_digit(uint8_t c) {
-+  return ('0' <= c) && (c <= '9');
- }
- 
--// --------
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__result_f64  //
-+wuffs_base__parse_number_f64(wuffs_base__slice_u8 s, uint32_t options) {
-+  // In practice, almost all "dd.ddddE±xxx" numbers can be represented
-+  // losslessly by a uint64_t mantissa "dddddd" and an int32_t base-10
-+  // exponent, adjusting "xxx" for the position (if present) of the decimal
-+  // separator '.' or ','.
-+  //
-+  // This (u64 man, i32 exp10) data structure is superficially similar to the
-+  // "Do It Yourself Floating Point" type from Loitsch (†), but the exponent
-+  // here is base-10, not base-2.
-+  //
-+  // If s's number fits in a (man, exp10), parse that pair with the
-+  // Eisel-Lemire algorithm. If not, or if Eisel-Lemire fails, parsing s with
-+  // the fallback algorithm is slower but comprehensive.
-+  //
-+  // † "Printing Floating-Point Numbers Quickly and Accurately with Integers"
-+  // (https://www.cs.tufts.edu/~nr/cs257/archive/florian-loitsch/printf.pdf).
-+  // Florian Loitsch is also the primary contributor to
-+  // https://github.com/google/double-conversion
-+  do {
-+    // Calculating that (man, exp10) pair needs to stay within s's bounds.
-+    // Provided that s isn't extremely long, work on a NUL-terminated copy of
-+    // s's contents. The NUL byte isn't a valid part of "±dd.ddddE±xxx".
-+    //
-+    // As the pointer p walks the contents, it's faster to repeatedly check "is
-+    // *p a valid digit" than "is p within bounds and *p a valid digit".
-+    if (s.len >= 256) {
-+      goto fallback;
-+    }
-+    uint8_t z[256];
-+    memcpy(&z[0], s.ptr, s.len);
-+    z[s.len] = 0;
-+    const uint8_t* p = &z[0];
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__squash_align4_bgr_565_8888(uint8_t* dst_ptr,
--                                                       size_t dst_len,
--                                                       const uint8_t* src_ptr,
--                                                       size_t src_len,
--                                                       bool nonpremul) {
--  size_t len = (dst_len < src_len ? dst_len : src_len) / 4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
-+    // Look for a leading minus sign. Technically, we could also look for an
-+    // optional plus sign, but the "script/process-json-numbers.c with -p"
-+    // benchmark is noticably slower if we do. It's optional and, in practice,
-+    // usually absent. Let the fallback catch it.
-+    bool negative = (*p == '-');
-+    if (negative) {
-+      p++;
-+    }
- 
--  size_t n = len;
--  while (n--) {
--    uint32_t argb = wuffs_base__peek_u32le__no_bounds_check(s);
--    if (nonpremul) {
--      argb =
--          wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(argb);
-+    // After walking "dd.dddd", comparing p later with p now will produce the
-+    // number of "d"s and "."s.
-+    const uint8_t* const start_of_digits_ptr = p;
-+
-+    // Walk the "d"s before a '.', 'E', NUL byte, etc. If it starts with '0',
-+    // it must be a single '0'. If it starts with a non-zero decimal digit, it
-+    // can be a sequence of decimal digits.
-+    //
-+    // Update the man variable during the walk. It's OK if man overflows now.
-+    // We'll detect that later.
-+    uint64_t man;
-+    if (*p == '0') {
-+      man = 0;
-+      p++;
-+      if (wuffs_private_impl__is_decimal_digit(*p)) {
-+        goto fallback;
-+      }
-+    } else if (wuffs_private_impl__is_decimal_digit(*p)) {
-+      man = ((uint8_t)(*p - '0'));
-+      p++;
-+      for (; wuffs_private_impl__is_decimal_digit(*p); p++) {
-+        man = (10 * man) + ((uint8_t)(*p - '0'));
-+      }
-+    } else {
-+      goto fallback;
-     }
--    uint32_t b5 = 0x1F & (argb >> (8 - 5));
--    uint32_t g6 = 0x3F & (argb >> (16 - 6));
--    uint32_t r5 = 0x1F & (argb >> (24 - 5));
--    uint32_t alpha = argb & 0xFF000000;
--    wuffs_base__poke_u32le__no_bounds_check(
--        d, alpha | (r5 << 11) | (g6 << 5) | (b5 << 0));
--    s += 4;
--    d += 4;
--  }
--  return len;
--}
- 
--// --------
-+    // Walk the "d"s after the optional decimal separator ('.' or ','),
-+    // updating the man and exp10 variables.
-+    int32_t exp10 = 0;
-+    if (*p ==
-+        ((options & WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
-+             ? ','
-+             : '.')) {
-+      p++;
-+      const uint8_t* first_after_separator_ptr = p;
-+      if (!wuffs_private_impl__is_decimal_digit(*p)) {
-+        goto fallback;
-+      }
-+      man = (10 * man) + ((uint8_t)(*p - '0'));
-+      p++;
-+      for (; wuffs_private_impl__is_decimal_digit(*p); p++) {
-+        man = (10 * man) + ((uint8_t)(*p - '0'));
-+      }
-+      exp10 = ((int32_t)(first_after_separator_ptr - p));
-+    }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__swap_rgb_bgr(uint8_t* dst_ptr,
--                                         size_t dst_len,
--                                         uint8_t* dst_palette_ptr,
--                                         size_t dst_palette_len,
--                                         const uint8_t* src_ptr,
--                                         size_t src_len) {
--  size_t len = (dst_len < src_len ? dst_len : src_len) / 3;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
-+    // Count the number of digits:
-+    //  - for an input of "314159",  digit_count is 6.
-+    //  - for an input of "3.14159", digit_count is 7.
-+    //
-+    // This is off-by-one if there is a decimal separator. That's OK for now.
-+    // We'll correct for that later. The "script/process-json-numbers.c with
-+    // -p" benchmark is noticably slower if we try to correct for that now.
-+    uint32_t digit_count = (uint32_t)(p - start_of_digits_ptr);
- 
--  size_t n = len;
--  while (n--) {
--    uint8_t s0 = s[0];
--    uint8_t s1 = s[1];
--    uint8_t s2 = s[2];
--    d[0] = s2;
--    d[1] = s1;
--    d[2] = s0;
--    s += 3;
--    d += 3;
--  }
--  return len;
--}
-+    // Update exp10 for the optional exponent, starting with 'E' or 'e'.
-+    if ((*p | 0x20) == 'e') {
-+      p++;
-+      int32_t exp_sign = +1;
-+      if (*p == '-') {
-+        p++;
-+        exp_sign = -1;
-+      } else if (*p == '+') {
-+        p++;
-+      }
-+      if (!wuffs_private_impl__is_decimal_digit(*p)) {
-+        goto fallback;
-+      }
-+      int32_t exp_num = ((uint8_t)(*p - '0'));
-+      p++;
-+      // The rest of the exp_num walking has a peculiar control flow but, once
-+      // again, the "script/process-json-numbers.c with -p" benchmark is
-+      // sensitive to alternative formulations.
-+      if (wuffs_private_impl__is_decimal_digit(*p)) {
-+        exp_num = (10 * exp_num) + ((uint8_t)(*p - '0'));
-+        p++;
-+      }
-+      if (wuffs_private_impl__is_decimal_digit(*p)) {
-+        exp_num = (10 * exp_num) + ((uint8_t)(*p - '0'));
-+        p++;
-+      }
-+      while (wuffs_private_impl__is_decimal_digit(*p)) {
-+        if (exp_num > 0x1000000) {
-+          goto fallback;
-+        }
-+        exp_num = (10 * exp_num) + ((uint8_t)(*p - '0'));
-+        p++;
-+      }
-+      exp10 += exp_sign * exp_num;
-+    }
- 
--// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
--static uint64_t  //
--wuffs_base__pixel_swizzler__swap_rgbx_bgrx__x86_sse42(uint8_t* dst_ptr,
--                                                      size_t dst_len,
--                                                      uint8_t* dst_palette_ptr,
--                                                      size_t dst_palette_len,
--                                                      const uint8_t* src_ptr,
--                                                      size_t src_len) {
--  size_t len = (dst_len < src_len ? dst_len : src_len) / 4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+    // The Wuffs API is that the original slice has no trailing data. It also
-+    // allows underscores, which we don't catch here but the fallback should.
-+    if (p != &z[s.len]) {
-+      goto fallback;
-+    }
- 
--  __m128i shuffle = _mm_set_epi8(+0x0F, +0x0C, +0x0D, +0x0E,  //
--                                 +0x0B, +0x08, +0x09, +0x0A,  //
--                                 +0x07, +0x04, +0x05, +0x06,  //
--                                 +0x03, +0x00, +0x01, +0x02);
-+    // Check that the uint64_t typed man variable has not overflowed, based on
-+    // digit_count.
-+    //
-+    // For reference:
-+    //   - (1 << 63) is  9223372036854775808, which has 19 decimal digits.
-+    //   - (1 << 64) is 18446744073709551616, which has 20 decimal digits.
-+    //   - 19 nines,  9999999999999999999, is  0x8AC7230489E7FFFF, which has 64
-+    //     bits and 16 hexadecimal digits.
-+    //   - 20 nines, 99999999999999999999, is 0x56BC75E2D630FFFFF, which has 67
-+    //     bits and 17 hexadecimal digits.
-+    if (digit_count > 19) {
-+      // Even if we have more than 19 pseudo-digits, it's not yet definitely an
-+      // overflow. Recall that digit_count might be off-by-one (too large) if
-+      // there's a decimal separator. It will also over-report the number of
-+      // meaningful digits if the input looks something like "0.000dddExxx".
-+      //
-+      // We adjust by the number of leading '0's and '.'s and re-compare to 19.
-+      // Once again, technically, we could skip ','s too, but that perturbs the
-+      // "script/process-json-numbers.c with -p" benchmark.
-+      const uint8_t* q = start_of_digits_ptr;
-+      for (; (*q == '0') || (*q == '.'); q++) {
-+      }
-+      digit_count -= (uint32_t)(q - start_of_digits_ptr);
-+      if (digit_count > 19) {
-+        goto fallback;
-+      }
-+    }
- 
--  while (n >= 4) {
--    __m128i x;
--    x = _mm_lddqu_si128((const __m128i*)(const void*)s);
--    x = _mm_shuffle_epi8(x, shuffle);
--    _mm_storeu_si128((__m128i*)(void*)d, x);
-+    // The wuffs_private_impl__parse_number_f64_eisel_lemire preconditions
-+    // include that exp10 is in the range [-307 ..= 288].
-+    if ((exp10 < -307) || (288 < exp10)) {
-+      goto fallback;
-+    }
- 
--    s += 4 * 4;
--    d += 4 * 4;
--    n -= 4;
--  }
-+    // If both man and (10 ** exp10) are exactly representable by a double, we
-+    // don't need to run the Eisel-Lemire algorithm.
-+    if ((-22 <= exp10) && (exp10 <= 22) && ((man >> 53) == 0)) {
-+      double d = (double)man;
-+      if (exp10 >= 0) {
-+        d *= wuffs_private_impl__f64_powers_of_10[+exp10];
-+      } else {
-+        d /= wuffs_private_impl__f64_powers_of_10[-exp10];
-+      }
-+      wuffs_base__result_f64 ret;
-+      ret.status.repr = NULL;
-+      ret.value = negative ? -d : +d;
-+      return ret;
-+    }
- 
--  while (n--) {
--    uint8_t s0 = s[0];
--    uint8_t s1 = s[1];
--    uint8_t s2 = s[2];
--    uint8_t s3 = s[3];
--    d[0] = s2;
--    d[1] = s1;
--    d[2] = s0;
--    d[3] = s3;
--    s += 4;
--    d += 4;
--  }
--  return len;
--}
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
-+    // The wuffs_private_impl__parse_number_f64_eisel_lemire preconditions
-+    // include that man is non-zero. Parsing "0" should be caught by the "If
-+    // both man and (10 ** exp10)" above, but "0e99" might not.
-+    if (man == 0) {
-+      goto fallback;
-+    }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__swap_rgbx_bgrx(uint8_t* dst_ptr,
--                                           size_t dst_len,
--                                           uint8_t* dst_palette_ptr,
--                                           size_t dst_palette_len,
--                                           const uint8_t* src_ptr,
--                                           size_t src_len) {
--  size_t len = (dst_len < src_len ? dst_len : src_len) / 4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
-+    // Our man and exp10 are in range. Run the Eisel-Lemire algorithm.
-+    int64_t r = wuffs_private_impl__parse_number_f64_eisel_lemire(man, exp10);
-+    if (r < 0) {
-+      goto fallback;
-+    }
-+    wuffs_base__result_f64 ret;
-+    ret.status.repr = NULL;
-+    ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(
-+        ((uint64_t)r) | (((uint64_t)negative) << 63));
-+    return ret;
-+  } while (0);
- 
--  size_t n = len;
--  while (n--) {
--    uint8_t s0 = s[0];
--    uint8_t s1 = s[1];
--    uint8_t s2 = s[2];
--    uint8_t s3 = s[3];
--    d[0] = s2;
--    d[1] = s1;
--    d[2] = s0;
--    d[3] = s3;
--    s += 4;
--    d += 4;
--  }
--  return len;
-+fallback:
-+  do {
-+    wuffs_private_impl__high_prec_dec h;
-+    wuffs_base__status status =
-+        wuffs_private_impl__high_prec_dec__parse(&h, s, options);
-+    if (status.repr) {
-+      return wuffs_private_impl__parse_number_f64_special(s, options);
-+    }
-+    return wuffs_private_impl__high_prec_dec__to_f64(&h, options);
-+  } while (0);
- }
- 
- // --------
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__copy_1_1(uint8_t* dst_ptr,
--                                     size_t dst_len,
--                                     uint8_t* dst_palette_ptr,
--                                     size_t dst_palette_len,
--                                     const uint8_t* src_ptr,
--                                     size_t src_len) {
--  size_t len = (dst_len < src_len) ? dst_len : src_len;
--  if (len > 0) {
--    memmove(dst_ptr, src_ptr, len);
-+static inline size_t  //
-+wuffs_private_impl__render_inf(wuffs_base__slice_u8 dst,
-+                               bool neg,
-+                               uint32_t options) {
-+  if (neg) {
-+    if (dst.len < 4) {
-+      return 0;
-+    }
-+    wuffs_base__poke_u32le__no_bounds_check(dst.ptr, 0x666E492D);  // '-Inf'le.
-+    return 4;
-   }
--  return len;
--}
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__copy_2_2(uint8_t* dst_ptr,
--                                     size_t dst_len,
--                                     uint8_t* dst_palette_ptr,
--                                     size_t dst_palette_len,
--                                     const uint8_t* src_ptr,
--                                     size_t src_len) {
--  size_t dst_len2 = dst_len / 2;
--  size_t src_len2 = src_len / 2;
--  size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2;
--  if (len > 0) {
--    memmove(dst_ptr, src_ptr, len * 2);
-+  if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) {
-+    if (dst.len < 4) {
-+      return 0;
-+    }
-+    wuffs_base__poke_u32le__no_bounds_check(dst.ptr, 0x666E492B);  // '+Inf'le.
-+    return 4;
-   }
--  return len;
--}
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__copy_3_3(uint8_t* dst_ptr,
--                                     size_t dst_len,
--                                     uint8_t* dst_palette_ptr,
--                                     size_t dst_palette_len,
--                                     const uint8_t* src_ptr,
--                                     size_t src_len) {
--  size_t dst_len3 = dst_len / 3;
--  size_t src_len3 = src_len / 3;
--  size_t len = (dst_len3 < src_len3) ? dst_len3 : src_len3;
--  if (len > 0) {
--    memmove(dst_ptr, src_ptr, len * 3);
-+  if (dst.len < 3) {
-+    return 0;
-   }
--  return len;
-+  wuffs_base__poke_u24le__no_bounds_check(dst.ptr, 0x666E49);  // 'Inf'le.
-+  return 3;
- }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__copy_4_4(uint8_t* dst_ptr,
--                                     size_t dst_len,
--                                     uint8_t* dst_palette_ptr,
--                                     size_t dst_palette_len,
--                                     const uint8_t* src_ptr,
--                                     size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
--  if (len > 0) {
--    memmove(dst_ptr, src_ptr, len * 4);
-+static inline size_t  //
-+wuffs_private_impl__render_nan(wuffs_base__slice_u8 dst) {
-+  if (dst.len < 3) {
-+    return 0;
-   }
--  return len;
-+  wuffs_base__poke_u24le__no_bounds_check(dst.ptr, 0x4E614E);  // 'NaN'le.
-+  return 3;
- }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__copy_8_8(uint8_t* dst_ptr,
--                                     size_t dst_len,
--                                     uint8_t* dst_palette_ptr,
--                                     size_t dst_palette_len,
--                                     const uint8_t* src_ptr,
--                                     size_t src_len) {
--  size_t dst_len8 = dst_len / 8;
--  size_t src_len8 = src_len / 8;
--  size_t len = (dst_len8 < src_len8) ? dst_len8 : src_len8;
--  if (len > 0) {
--    memmove(dst_ptr, src_ptr, len * 8);
-+static size_t  //
-+wuffs_private_impl__high_prec_dec__render_exponent_absent(
-+    wuffs_base__slice_u8 dst,
-+    wuffs_private_impl__high_prec_dec* h,
-+    uint32_t precision,
-+    uint32_t options) {
-+  size_t n = (h->negative ||
-+              (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN))
-+                 ? 1
-+                 : 0;
-+  if (h->decimal_point <= 0) {
-+    n += 1;
-+  } else {
-+    n += (size_t)(h->decimal_point);
-+  }
-+  if (precision > 0) {
-+    n += precision + 1;  // +1 for the '.'.
-   }
--  return len;
--}
- 
--// --------
-+  // Don't modify dst if the formatted number won't fit.
-+  if (n > dst.len) {
-+    return 0;
-+  }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr_565__bgr(uint8_t* dst_ptr,
--                                         size_t dst_len,
--                                         uint8_t* dst_palette_ptr,
--                                         size_t dst_palette_len,
--                                         const uint8_t* src_ptr,
--                                         size_t src_len) {
--  size_t dst_len2 = dst_len / 2;
--  size_t src_len3 = src_len / 3;
--  size_t len = (dst_len2 < src_len3) ? dst_len2 : src_len3;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+  // Align-left or align-right.
-+  uint8_t* ptr = (options & WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT)
-+                     ? &dst.ptr[dst.len - n]
-+                     : &dst.ptr[0];
- 
--  // TODO: unroll.
-+  // Leading "±".
-+  if (h->negative) {
-+    *ptr++ = '-';
-+  } else if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) {
-+    *ptr++ = '+';
-+  }
- 
--  while (n >= 1) {
--    uint32_t b5 = s[0] >> 3;
--    uint32_t g6 = s[1] >> 2;
--    uint32_t r5 = s[2] >> 3;
--    uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0);
--    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
-+  // Integral digits.
-+  if (h->decimal_point <= 0) {
-+    *ptr++ = '0';
-+  } else {
-+    uint32_t m =
-+        wuffs_base__u32__min(h->num_digits, (uint32_t)(h->decimal_point));
-+    uint32_t i = 0;
-+    for (; i < m; i++) {
-+      *ptr++ = (uint8_t)('0' | h->digits[i]);
-+    }
-+    for (; i < (uint32_t)(h->decimal_point); i++) {
-+      *ptr++ = '0';
-+    }
-+  }
- 
--    s += 1 * 3;
--    d += 1 * 2;
--    n -= 1;
-+  // Separator and then fractional digits.
-+  if (precision > 0) {
-+    *ptr++ =
-+        (options & WUFFS_BASE__RENDER_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
-+            ? ','
-+            : '.';
-+    uint32_t i = 0;
-+    for (; i < precision; i++) {
-+      uint32_t j = ((uint32_t)(h->decimal_point)) + i;
-+      *ptr++ = (uint8_t)('0' | ((j < h->num_digits) ? h->digits[j] : 0));
-+    }
-   }
- 
--  return len;
-+  return n;
- }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr_565__bgrx(uint8_t* dst_ptr,
--                                          size_t dst_len,
--                                          uint8_t* dst_palette_ptr,
--                                          size_t dst_palette_len,
--                                          const uint8_t* src_ptr,
--                                          size_t src_len) {
--  size_t dst_len2 = dst_len / 2;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
--
--  // TODO: unroll.
-+static size_t  //
-+wuffs_private_impl__high_prec_dec__render_exponent_present(
-+    wuffs_base__slice_u8 dst,
-+    wuffs_private_impl__high_prec_dec* h,
-+    uint32_t precision,
-+    uint32_t options) {
-+  int32_t exp = 0;
-+  if (h->num_digits > 0) {
-+    exp = h->decimal_point - 1;
-+  }
-+  bool negative_exp = exp < 0;
-+  if (negative_exp) {
-+    exp = -exp;
-+  }
- 
--  while (n >= 1) {
--    uint32_t b5 = s[0] >> 3;
--    uint32_t g6 = s[1] >> 2;
--    uint32_t r5 = s[2] >> 3;
--    uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0);
--    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
-+  size_t n = (h->negative ||
-+              (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN))
-+                 ? 4
-+                 : 3;  // Mininum 3 bytes: first digit and then "e±".
-+  if (precision > 0) {
-+    n += precision + 1;  // +1 for the '.'.
-+  }
-+  n += (exp < 100) ? 2 : 3;
- 
--    s += 1 * 4;
--    d += 1 * 2;
--    n -= 1;
-+  // Don't modify dst if the formatted number won't fit.
-+  if (n > dst.len) {
-+    return 0;
-   }
- 
--  return len;
--}
-+  // Align-left or align-right.
-+  uint8_t* ptr = (options & WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT)
-+                     ? &dst.ptr[dst.len - n]
-+                     : &dst.ptr[0];
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len2 = dst_len / 2;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+  // Leading "±".
-+  if (h->negative) {
-+    *ptr++ = '-';
-+  } else if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) {
-+    *ptr++ = '+';
-+  }
- 
--  // TODO: unroll.
-+  // Integral digit.
-+  if (h->num_digits > 0) {
-+    *ptr++ = (uint8_t)('0' | h->digits[0]);
-+  } else {
-+    *ptr++ = '0';
-+  }
- 
--  while (n >= 1) {
--    wuffs_base__poke_u16le__no_bounds_check(
--        d + (0 * 2),
--        wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
--            wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
--                wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))));
-+  // Separator and then fractional digits.
-+  if (precision > 0) {
-+    *ptr++ =
-+        (options & WUFFS_BASE__RENDER_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
-+            ? ','
-+            : '.';
-+    uint32_t i = 1;
-+    uint32_t j = wuffs_base__u32__min(h->num_digits, precision + 1);
-+    for (; i < j; i++) {
-+      *ptr++ = (uint8_t)('0' | h->digits[i]);
-+    }
-+    for (; i <= precision; i++) {
-+      *ptr++ = '0';
-+    }
-+  }
- 
--    s += 1 * 4;
--    d += 1 * 2;
--    n -= 1;
-+  // Exponent: "e±" and then 2 or 3 digits.
-+  *ptr++ = 'e';
-+  *ptr++ = negative_exp ? '-' : '+';
-+  if (exp < 10) {
-+    *ptr++ = '0';
-+    *ptr++ = (uint8_t)('0' | exp);
-+  } else if (exp < 100) {
-+    *ptr++ = (uint8_t)('0' | (exp / 10));
-+    *ptr++ = (uint8_t)('0' | (exp % 10));
-+  } else {
-+    int32_t e = exp / 100;
-+    exp -= e * 100;
-+    *ptr++ = (uint8_t)('0' | e);
-+    *ptr++ = (uint8_t)('0' | (exp / 10));
-+    *ptr++ = (uint8_t)('0' | (exp % 10));
-   }
- 
--  return len;
-+  return n;
- }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len2 = dst_len / 2;
--  size_t src_len8 = src_len / 8;
--  size_t len = (dst_len2 < src_len8) ? dst_len2 : src_len8;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
--
--  // TODO: unroll.
-+WUFFS_BASE__MAYBE_STATIC size_t  //
-+wuffs_base__render_number_f64(wuffs_base__slice_u8 dst,
-+                              double x,
-+                              uint32_t precision,
-+                              uint32_t options) {
-+  // Decompose x (64 bits) into negativity (1 bit), base-2 exponent (11 bits
-+  // with a -1023 bias) and mantissa (52 bits).
-+  uint64_t bits = wuffs_base__ieee_754_bit_representation__from_f64_to_u64(x);
-+  bool neg = (bits >> 63) != 0;
-+  int32_t exp2 = ((int32_t)(bits >> 52)) & 0x7FF;
-+  uint64_t man = bits & 0x000FFFFFFFFFFFFFul;
- 
--  while (n >= 1) {
--    wuffs_base__poke_u16le__no_bounds_check(
--        d + (0 * 2),
--        wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
--            wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
--                wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)))));
-+  // Apply the exponent bias and set the implicit top bit of the mantissa,
-+  // unless x is subnormal. Also take care of Inf and NaN.
-+  if (exp2 == 0x7FF) {
-+    if (man != 0) {
-+      return wuffs_private_impl__render_nan(dst);
-+    }
-+    return wuffs_private_impl__render_inf(dst, neg, options);
-+  } else if (exp2 == 0) {
-+    exp2 = -1022;
-+  } else {
-+    exp2 -= 1023;
-+    man |= 0x0010000000000000ul;
-+  }
- 
--    s += 1 * 8;
--    d += 1 * 2;
--    n -= 1;
-+  // Ensure that precision isn't too large.
-+  if (precision > 4095) {
-+    precision = 4095;
-   }
- 
--  return len;
--}
-+  // Convert from the (neg, exp2, man) tuple to an HPD.
-+  wuffs_private_impl__high_prec_dec h;
-+  wuffs_private_impl__high_prec_dec__assign(&h, man, neg);
-+  if (h.num_digits > 0) {
-+    wuffs_private_impl__high_prec_dec__lshift(&h,
-+                                              exp2 - 52);  // 52 mantissa bits.
-+  }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len2 = dst_len / 2;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+  // Handle the "%e" and "%f" formats.
-+  switch (options & (WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ABSENT |
-+                     WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_PRESENT)) {
-+    case WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ABSENT:  // The "%"f" format.
-+      if (options & WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION) {
-+        wuffs_private_impl__high_prec_dec__round_just_enough(&h, exp2, man);
-+        int32_t p = ((int32_t)(h.num_digits)) - h.decimal_point;
-+        precision = ((uint32_t)(wuffs_base__i32__max(0, p)));
-+      } else {
-+        wuffs_private_impl__high_prec_dec__round_nearest(
-+            &h, ((int32_t)precision) + h.decimal_point);
-+      }
-+      return wuffs_private_impl__high_prec_dec__render_exponent_absent(
-+          dst, &h, precision, options);
- 
--  // TODO: unroll.
-+    case WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_PRESENT:  // The "%e" format.
-+      if (options & WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION) {
-+        wuffs_private_impl__high_prec_dec__round_just_enough(&h, exp2, man);
-+        precision = (h.num_digits > 0) ? (h.num_digits - 1) : 0;
-+      } else {
-+        wuffs_private_impl__high_prec_dec__round_nearest(
-+            &h, ((int32_t)precision) + 1);
-+      }
-+      return wuffs_private_impl__high_prec_dec__render_exponent_present(
-+          dst, &h, precision, options);
-+  }
- 
--  while (n >= 1) {
--    // Extract 16-bit color components.
--    uint32_t sa = 0x101 * ((uint32_t)s[3]);
--    uint32_t sr = 0x101 * ((uint32_t)s[2]);
--    uint32_t sg = 0x101 * ((uint32_t)s[1]);
--    uint32_t sb = 0x101 * ((uint32_t)s[0]);
-+  // We have the "%g" format and so precision means the number of significant
-+  // digits, not the number of digits after the decimal separator. Perform
-+  // rounding and determine whether to use "%e" or "%f".
-+  int32_t e_threshold = 0;
-+  if (options & WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION) {
-+    wuffs_private_impl__high_prec_dec__round_just_enough(&h, exp2, man);
-+    precision = h.num_digits;
-+    e_threshold = 6;
-+  } else {
-+    if (precision == 0) {
-+      precision = 1;
-+    }
-+    wuffs_private_impl__high_prec_dec__round_nearest(&h, ((int32_t)precision));
-+    e_threshold = ((int32_t)precision);
-+    int32_t nd = ((int32_t)(h.num_digits));
-+    if ((e_threshold > nd) && (nd >= h.decimal_point)) {
-+      e_threshold = nd;
-+    }
-+  }
- 
--    // Convert from 565 color to 16-bit color.
--    uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
--    uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
--    uint32_t dr = (0x8421 * old_r5) >> 4;
--    uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
--    uint32_t dg = (0x1041 * old_g6) >> 2;
--    uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
--    uint32_t db = (0x8421 * old_b5) >> 4;
-+  // Use the "%e" format if the exponent is large.
-+  int32_t e = h.decimal_point - 1;
-+  if ((e < -4) || (e_threshold <= e)) {
-+    uint32_t p = wuffs_base__u32__min(precision, h.num_digits);
-+    return wuffs_private_impl__high_prec_dec__render_exponent_present(
-+        dst, &h, (p > 0) ? (p - 1) : 0, options);
-+  }
- 
--    // Calculate the inverse of the src-alpha: how much of the dst to keep.
--    uint32_t ia = 0xFFFF - sa;
-+  // Use the "%f" format otherwise.
-+  int32_t p = ((int32_t)precision);
-+  if (p > h.decimal_point) {
-+    p = ((int32_t)(h.num_digits));
-+  }
-+  precision = ((uint32_t)(wuffs_base__i32__max(0, p - h.decimal_point)));
-+  return wuffs_private_impl__high_prec_dec__render_exponent_absent(
-+      dst, &h, precision, options);
-+}
- 
--    // Composite src (nonpremul) over dst (premul).
--    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
--    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
--    db = ((sb * sa) + (db * ia)) / 0xFFFF;
-+#endif  // !defined(WUFFS_CONFIG__MODULES) ||
-+        // defined(WUFFS_CONFIG__MODULE__BASE) ||
-+        // defined(WUFFS_CONFIG__MODULE__BASE__FLOATCONV)
- 
--    // Convert from 16-bit color to 565 color and combine the components.
--    uint32_t new_r5 = 0x1F & (dr >> 11);
--    uint32_t new_g6 = 0x3F & (dg >> 10);
--    uint32_t new_b5 = 0x1F & (db >> 11);
--    uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
--    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
-+    defined(WUFFS_CONFIG__MODULE__BASE__INTCONV)
- 
--    s += 1 * 4;
--    d += 1 * 2;
--    n -= 1;
--  }
-+// ---------------- Integer
- 
--  return len;
--}
-+// wuffs_base__parse_number__foo_digits entries are 0x00 for invalid digits,
-+// and (0x80 | v) for valid digits, where v is the 4 bit value.
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len2 = dst_len / 2;
--  size_t src_len8 = src_len / 8;
--  size_t len = (dst_len2 < src_len8) ? dst_len2 : src_len8;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+static const uint8_t wuffs_base__parse_number__decimal_digits[256] = {
-+    // 0     1     2     3     4     5     6     7
-+    // 8     9     A     B     C     D     E     F
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x00 ..= 0x07.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x08 ..= 0x0F.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x10 ..= 0x17.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x18 ..= 0x1F.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x20 ..= 0x27.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x28 ..= 0x2F.
-+    0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,  // 0x30 ..= 0x37. '0'-'7'.
-+    0x88, 0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x38 ..= 0x3F. '8'-'9'.
- 
--  // TODO: unroll.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x40 ..= 0x47.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x48 ..= 0x4F.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x50 ..= 0x57.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x58 ..= 0x5F.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x60 ..= 0x67.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x68 ..= 0x6F.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x70 ..= 0x77.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x78 ..= 0x7F.
- 
--  while (n >= 1) {
--    // Extract 16-bit color components.
--    uint32_t sa = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 6));
--    uint32_t sr = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 4));
--    uint32_t sg = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 2));
--    uint32_t sb = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 0));
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x80 ..= 0x87.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x88 ..= 0x8F.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x90 ..= 0x97.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x98 ..= 0x9F.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xA0 ..= 0xA7.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xA8 ..= 0xAF.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xB0 ..= 0xB7.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xB8 ..= 0xBF.
- 
--    // Convert from 565 color to 16-bit color.
--    uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
--    uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
--    uint32_t dr = (0x8421 * old_r5) >> 4;
--    uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
--    uint32_t dg = (0x1041 * old_g6) >> 2;
--    uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
--    uint32_t db = (0x8421 * old_b5) >> 4;
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xC0 ..= 0xC7.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xC8 ..= 0xCF.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xD0 ..= 0xD7.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xD8 ..= 0xDF.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xE0 ..= 0xE7.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xE8 ..= 0xEF.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xF0 ..= 0xF7.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xF8 ..= 0xFF.
-+    // 0     1     2     3     4     5     6     7
-+    // 8     9     A     B     C     D     E     F
-+};
- 
--    // Calculate the inverse of the src-alpha: how much of the dst to keep.
--    uint32_t ia = 0xFFFF - sa;
-+static const uint8_t wuffs_base__parse_number__hexadecimal_digits[256] = {
-+    // 0     1     2     3     4     5     6     7
-+    // 8     9     A     B     C     D     E     F
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x00 ..= 0x07.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x08 ..= 0x0F.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x10 ..= 0x17.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x18 ..= 0x1F.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x20 ..= 0x27.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x28 ..= 0x2F.
-+    0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,  // 0x30 ..= 0x37. '0'-'7'.
-+    0x88, 0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x38 ..= 0x3F. '8'-'9'.
- 
--    // Composite src (nonpremul) over dst (premul).
--    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
--    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
--    db = ((sb * sa) + (db * ia)) / 0xFFFF;
-+    0x00, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x00,  // 0x40 ..= 0x47. 'A'-'F'.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x48 ..= 0x4F.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x50 ..= 0x57.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x58 ..= 0x5F.
-+    0x00, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x00,  // 0x60 ..= 0x67. 'a'-'f'.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x68 ..= 0x6F.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x70 ..= 0x77.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x78 ..= 0x7F.
- 
--    // Convert from 16-bit color to 565 color and combine the components.
--    uint32_t new_r5 = 0x1F & (dr >> 11);
--    uint32_t new_g6 = 0x3F & (dg >> 10);
--    uint32_t new_b5 = 0x1F & (db >> 11);
--    uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
--    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x80 ..= 0x87.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x88 ..= 0x8F.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x90 ..= 0x97.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x98 ..= 0x9F.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xA0 ..= 0xA7.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xA8 ..= 0xAF.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xB0 ..= 0xB7.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xB8 ..= 0xBF.
- 
--    s += 1 * 8;
--    d += 1 * 2;
--    n -= 1;
--  }
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xC0 ..= 0xC7.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xC8 ..= 0xCF.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xD0 ..= 0xD7.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xD8 ..= 0xDF.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xE0 ..= 0xE7.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xE8 ..= 0xEF.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xF0 ..= 0xF7.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xF8 ..= 0xFF.
-+    // 0     1     2     3     4     5     6     7
-+    // 8     9     A     B     C     D     E     F
-+};
- 
--  return len;
--}
-+static const uint8_t wuffs_private_impl__encode_base16[16] = {
-+    0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,  // 0x00 ..= 0x07.
-+    0x38, 0x39, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46,  // 0x08 ..= 0x0F.
-+};
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src(uint8_t* dst_ptr,
--                                                      size_t dst_len,
--                                                      uint8_t* dst_palette_ptr,
--                                                      size_t dst_palette_len,
--                                                      const uint8_t* src_ptr,
--                                                      size_t src_len) {
--  size_t dst_len2 = dst_len / 2;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+// --------
- 
--  // TODO: unroll.
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__result_i64  //
-+wuffs_base__parse_number_i64(wuffs_base__slice_u8 s, uint32_t options) {
-+  uint8_t* p = s.ptr;
-+  uint8_t* q = s.ptr + s.len;
- 
--  while (n >= 1) {
--    wuffs_base__poke_u16le__no_bounds_check(
--        d + (0 * 2), wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
--                         wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
-+  if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
-+    for (; (p < q) && (*p == '_'); p++) {
-+    }
-+  }
- 
--    s += 1 * 4;
--    d += 1 * 2;
--    n -= 1;
-+  bool negative = false;
-+  if (p >= q) {
-+    goto fail_bad_argument;
-+  } else if (*p == '-') {
-+    p++;
-+    negative = true;
-+  } else if (*p == '+') {
-+    p++;
-   }
- 
--  return len;
--}
-+  do {
-+    wuffs_base__result_u64 r = wuffs_base__parse_number_u64(
-+        wuffs_base__make_slice_u8(p, (size_t)(q - p)), options);
-+    if (r.status.repr != NULL) {
-+      wuffs_base__result_i64 ret;
-+      ret.status.repr = r.status.repr;
-+      ret.value = 0;
-+      return ret;
-+    } else if (negative) {
-+      if (r.value < 0x8000000000000000) {
-+        wuffs_base__result_i64 ret;
-+        ret.status.repr = NULL;
-+        ret.value = -(int64_t)(r.value);
-+        return ret;
-+      } else if (r.value == 0x8000000000000000) {
-+        wuffs_base__result_i64 ret;
-+        ret.status.repr = NULL;
-+        ret.value = INT64_MIN;
-+        return ret;
-+      }
-+      goto fail_out_of_bounds;
-+    } else if (r.value > 0x7FFFFFFFFFFFFFFF) {
-+      goto fail_out_of_bounds;
-+    } else {
-+      wuffs_base__result_i64 ret;
-+      ret.status.repr = NULL;
-+      ret.value = +(int64_t)(r.value);
-+      return ret;
-+    }
-+  } while (0);
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len2 = dst_len / 2;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+fail_bad_argument:
-+  do {
-+    wuffs_base__result_i64 ret;
-+    ret.status.repr = wuffs_base__error__bad_argument;
-+    ret.value = 0;
-+    return ret;
-+  } while (0);
- 
--  // TODO: unroll.
-+fail_out_of_bounds:
-+  do {
-+    wuffs_base__result_i64 ret;
-+    ret.status.repr = wuffs_base__error__out_of_bounds;
-+    ret.value = 0;
-+    return ret;
-+  } while (0);
-+}
- 
--  while (n >= 1) {
--    // Extract 16-bit color components.
--    uint32_t sa = 0x101 * ((uint32_t)s[3]);
--    uint32_t sr = 0x101 * ((uint32_t)s[2]);
--    uint32_t sg = 0x101 * ((uint32_t)s[1]);
--    uint32_t sb = 0x101 * ((uint32_t)s[0]);
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__result_u64  //
-+wuffs_base__parse_number_u64(wuffs_base__slice_u8 s, uint32_t options) {
-+  uint8_t* p = s.ptr;
-+  uint8_t* q = s.ptr + s.len;
- 
--    // Convert from 565 color to 16-bit color.
--    uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
--    uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
--    uint32_t dr = (0x8421 * old_r5) >> 4;
--    uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
--    uint32_t dg = (0x1041 * old_g6) >> 2;
--    uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
--    uint32_t db = (0x8421 * old_b5) >> 4;
--
--    // Calculate the inverse of the src-alpha: how much of the dst to keep.
--    uint32_t ia = 0xFFFF - sa;
--
--    // Composite src (premul) over dst (premul).
--    dr = sr + ((dr * ia) / 0xFFFF);
--    dg = sg + ((dg * ia) / 0xFFFF);
--    db = sb + ((db * ia) / 0xFFFF);
--
--    // Convert from 16-bit color to 565 color and combine the components.
--    uint32_t new_r5 = 0x1F & (dr >> 11);
--    uint32_t new_g6 = 0x3F & (dg >> 10);
--    uint32_t new_b5 = 0x1F & (db >> 11);
--    uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
--    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
--
--    s += 1 * 4;
--    d += 1 * 2;
--    n -= 1;
-+  if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
-+    for (; (p < q) && (*p == '_'); p++) {
-+    }
-   }
- 
--  return len;
--}
-+  if (p >= q) {
-+    goto fail_bad_argument;
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr_565__rgb(uint8_t* dst_ptr,
--                                         size_t dst_len,
--                                         uint8_t* dst_palette_ptr,
--                                         size_t dst_palette_len,
--                                         const uint8_t* src_ptr,
--                                         size_t src_len) {
--  size_t dst_len2 = dst_len / 2;
--  size_t src_len3 = src_len / 3;
--  size_t len = (dst_len2 < src_len3) ? dst_len2 : src_len3;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+  } else if (*p == '0') {
-+    p++;
-+    if (p >= q) {
-+      goto ok_zero;
-+    }
-+    if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
-+      if (*p == '_') {
-+        p++;
-+        for (; p < q; p++) {
-+          if (*p != '_') {
-+            if (options &
-+                WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES) {
-+              goto decimal;
-+            }
-+            goto fail_bad_argument;
-+          }
-+        }
-+        goto ok_zero;
-+      }
-+    }
- 
--  // TODO: unroll.
-+    if ((*p == 'x') || (*p == 'X')) {
-+      p++;
-+      if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
-+        for (; (p < q) && (*p == '_'); p++) {
-+        }
-+      }
-+      if (p < q) {
-+        goto hexadecimal;
-+      }
- 
--  while (n >= 1) {
--    uint32_t r5 = s[0] >> 3;
--    uint32_t g6 = s[1] >> 2;
--    uint32_t b5 = s[2] >> 3;
--    uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0);
--    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
-+    } else if ((*p == 'd') || (*p == 'D')) {
-+      p++;
-+      if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
-+        for (; (p < q) && (*p == '_'); p++) {
-+        }
-+      }
-+      if (p < q) {
-+        goto decimal;
-+      }
-+    }
- 
--    s += 1 * 3;
--    d += 1 * 2;
--    n -= 1;
-+    if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES) {
-+      goto decimal;
-+    }
-+    goto fail_bad_argument;
-   }
- 
--  return len;
--}
-+decimal:
-+  do {
-+    uint64_t v = wuffs_base__parse_number__decimal_digits[*p++];
-+    if (v == 0) {
-+      goto fail_bad_argument;
-+    }
-+    v &= 0x0F;
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len2 = dst_len / 2;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+    // UINT64_MAX is 18446744073709551615, which is ((10 * max10) + max1).
-+    const uint64_t max10 = 1844674407370955161u;
-+    const uint8_t max1 = 5;
- 
--  // TODO: unroll.
-+    for (; p < q; p++) {
-+      if ((*p == '_') &&
-+          (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
-+        continue;
-+      }
-+      uint8_t digit = wuffs_base__parse_number__decimal_digits[*p];
-+      if (digit == 0) {
-+        goto fail_bad_argument;
-+      }
-+      digit &= 0x0F;
-+      if ((v > max10) || ((v == max10) && (digit > max1))) {
-+        goto fail_out_of_bounds;
-+      }
-+      v = (10 * v) + ((uint64_t)(digit));
-+    }
- 
--  while (n >= 1) {
--    wuffs_base__poke_u16le__no_bounds_check(
--        d + (0 * 2),
--        wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
--            wuffs_base__swap_u32_argb_abgr(
--                wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
--                    wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))))));
-+    wuffs_base__result_u64 ret;
-+    ret.status.repr = NULL;
-+    ret.value = v;
-+    return ret;
-+  } while (0);
- 
--    s += 1 * 4;
--    d += 1 * 2;
--    n -= 1;
--  }
-+hexadecimal:
-+  do {
-+    uint64_t v = wuffs_base__parse_number__hexadecimal_digits[*p++];
-+    if (v == 0) {
-+      goto fail_bad_argument;
-+    }
-+    v &= 0x0F;
- 
--  return len;
--}
-+    for (; p < q; p++) {
-+      if ((*p == '_') &&
-+          (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
-+        continue;
-+      }
-+      uint8_t digit = wuffs_base__parse_number__hexadecimal_digits[*p];
-+      if (digit == 0) {
-+        goto fail_bad_argument;
-+      }
-+      digit &= 0x0F;
-+      if ((v >> 60) != 0) {
-+        goto fail_out_of_bounds;
-+      }
-+      v = (v << 4) | ((uint64_t)(digit));
-+    }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len2 = dst_len / 2;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+    wuffs_base__result_u64 ret;
-+    ret.status.repr = NULL;
-+    ret.value = v;
-+    return ret;
-+  } while (0);
- 
--  // TODO: unroll.
-+ok_zero:
-+  do {
-+    wuffs_base__result_u64 ret;
-+    ret.status.repr = NULL;
-+    ret.value = 0;
-+    return ret;
-+  } while (0);
- 
--  while (n >= 1) {
--    // Extract 16-bit color components.
--    uint32_t sa = 0x101 * ((uint32_t)s[3]);
--    uint32_t sb = 0x101 * ((uint32_t)s[2]);
--    uint32_t sg = 0x101 * ((uint32_t)s[1]);
--    uint32_t sr = 0x101 * ((uint32_t)s[0]);
-+fail_bad_argument:
-+  do {
-+    wuffs_base__result_u64 ret;
-+    ret.status.repr = wuffs_base__error__bad_argument;
-+    ret.value = 0;
-+    return ret;
-+  } while (0);
- 
--    // Convert from 565 color to 16-bit color.
--    uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
--    uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
--    uint32_t dr = (0x8421 * old_r5) >> 4;
--    uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
--    uint32_t dg = (0x1041 * old_g6) >> 2;
--    uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
--    uint32_t db = (0x8421 * old_b5) >> 4;
-+fail_out_of_bounds:
-+  do {
-+    wuffs_base__result_u64 ret;
-+    ret.status.repr = wuffs_base__error__out_of_bounds;
-+    ret.value = 0;
-+    return ret;
-+  } while (0);
-+}
- 
--    // Calculate the inverse of the src-alpha: how much of the dst to keep.
--    uint32_t ia = 0xFFFF - sa;
-+// --------
- 
--    // Composite src (nonpremul) over dst (premul).
--    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
--    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
--    db = ((sb * sa) + (db * ia)) / 0xFFFF;
-+// wuffs_base__render_number__first_hundred contains the decimal encodings of
-+// the first one hundred numbers [0 ..= 99].
-+static const uint8_t wuffs_base__render_number__first_hundred[200] = {
-+    '0', '0', '0', '1', '0', '2', '0', '3', '0', '4',  //
-+    '0', '5', '0', '6', '0', '7', '0', '8', '0', '9',  //
-+    '1', '0', '1', '1', '1', '2', '1', '3', '1', '4',  //
-+    '1', '5', '1', '6', '1', '7', '1', '8', '1', '9',  //
-+    '2', '0', '2', '1', '2', '2', '2', '3', '2', '4',  //
-+    '2', '5', '2', '6', '2', '7', '2', '8', '2', '9',  //
-+    '3', '0', '3', '1', '3', '2', '3', '3', '3', '4',  //
-+    '3', '5', '3', '6', '3', '7', '3', '8', '3', '9',  //
-+    '4', '0', '4', '1', '4', '2', '4', '3', '4', '4',  //
-+    '4', '5', '4', '6', '4', '7', '4', '8', '4', '9',  //
-+    '5', '0', '5', '1', '5', '2', '5', '3', '5', '4',  //
-+    '5', '5', '5', '6', '5', '7', '5', '8', '5', '9',  //
-+    '6', '0', '6', '1', '6', '2', '6', '3', '6', '4',  //
-+    '6', '5', '6', '6', '6', '7', '6', '8', '6', '9',  //
-+    '7', '0', '7', '1', '7', '2', '7', '3', '7', '4',  //
-+    '7', '5', '7', '6', '7', '7', '7', '8', '7', '9',  //
-+    '8', '0', '8', '1', '8', '2', '8', '3', '8', '4',  //
-+    '8', '5', '8', '6', '8', '7', '8', '8', '8', '9',  //
-+    '9', '0', '9', '1', '9', '2', '9', '3', '9', '4',  //
-+    '9', '5', '9', '6', '9', '7', '9', '8', '9', '9',  //
-+};
- 
--    // Convert from 16-bit color to 565 color and combine the components.
--    uint32_t new_r5 = 0x1F & (dr >> 11);
--    uint32_t new_g6 = 0x3F & (dg >> 10);
--    uint32_t new_b5 = 0x1F & (db >> 11);
--    uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
--    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
-+static size_t  //
-+wuffs_private_impl__render_number_u64(wuffs_base__slice_u8 dst,
-+                                      uint64_t x,
-+                                      uint32_t options,
-+                                      bool neg) {
-+  uint8_t buf[WUFFS_BASE__U64__BYTE_LENGTH__MAX_INCL];
-+  uint8_t* ptr = &buf[0] + sizeof(buf);
- 
--    s += 1 * 4;
--    d += 1 * 2;
--    n -= 1;
-+  while (x >= 100) {
-+    size_t index = ((size_t)((x % 100) * 2));
-+    x /= 100;
-+    uint8_t s0 = wuffs_base__render_number__first_hundred[index + 0];
-+    uint8_t s1 = wuffs_base__render_number__first_hundred[index + 1];
-+    ptr -= 2;
-+    ptr[0] = s0;
-+    ptr[1] = s1;
-   }
- 
--  return len;
--}
--
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src(uint8_t* dst_ptr,
--                                                      size_t dst_len,
--                                                      uint8_t* dst_palette_ptr,
--                                                      size_t dst_palette_len,
--                                                      const uint8_t* src_ptr,
--                                                      size_t src_len) {
--  size_t dst_len2 = dst_len / 2;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+  if (x < 10) {
-+    ptr -= 1;
-+    ptr[0] = (uint8_t)('0' + x);
-+  } else {
-+    size_t index = ((size_t)(x * 2));
-+    uint8_t s0 = wuffs_base__render_number__first_hundred[index + 0];
-+    uint8_t s1 = wuffs_base__render_number__first_hundred[index + 1];
-+    ptr -= 2;
-+    ptr[0] = s0;
-+    ptr[1] = s1;
-+  }
- 
--  // TODO: unroll.
-+  if (neg) {
-+    ptr -= 1;
-+    ptr[0] = '-';
-+  } else if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) {
-+    ptr -= 1;
-+    ptr[0] = '+';
-+  }
- 
--  while (n >= 1) {
--    wuffs_base__poke_u16le__no_bounds_check(
--        d + (0 * 2),
--        wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
--            wuffs_base__swap_u32_argb_abgr(
--                wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))));
-+  size_t n = sizeof(buf) - ((size_t)(ptr - &buf[0]));
-+  if (n > dst.len) {
-+    return 0;
-+  }
-+  memcpy(dst.ptr + ((options & WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT)
-+                        ? (dst.len - n)
-+                        : 0),
-+         ptr, n);
-+  return n;
-+}
- 
--    s += 1 * 4;
--    d += 1 * 2;
--    n -= 1;
-+WUFFS_BASE__MAYBE_STATIC size_t  //
-+wuffs_base__render_number_i64(wuffs_base__slice_u8 dst,
-+                              int64_t x,
-+                              uint32_t options) {
-+  uint64_t u = (uint64_t)x;
-+  bool neg = x < 0;
-+  if (neg) {
-+    u = 1 + ~u;
-   }
-+  return wuffs_private_impl__render_number_u64(dst, u, options, neg);
-+}
- 
--  return len;
-+WUFFS_BASE__MAYBE_STATIC size_t  //
-+wuffs_base__render_number_u64(wuffs_base__slice_u8 dst,
-+                              uint64_t x,
-+                              uint32_t options) {
-+  return wuffs_private_impl__render_number_u64(dst, x, options, false);
- }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len2 = dst_len / 2;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+// ---------------- Base-16
- 
--  // TODO: unroll.
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
-+wuffs_base__base_16__decode2(wuffs_base__slice_u8 dst,
-+                             wuffs_base__slice_u8 src,
-+                             bool src_closed,
-+                             uint32_t options) {
-+  wuffs_base__transform__output o;
-+  size_t src_len2 = src.len / 2;
-+  size_t len;
-+  if (dst.len < src_len2) {
-+    len = dst.len;
-+    o.status.repr = wuffs_base__suspension__short_write;
-+  } else {
-+    len = src_len2;
-+    if (!src_closed) {
-+      o.status.repr = wuffs_base__suspension__short_read;
-+    } else if (src.len & 1) {
-+      o.status.repr = wuffs_base__error__bad_data;
-+    } else {
-+      o.status.repr = NULL;
-+    }
-+  }
- 
--  while (n >= 1) {
--    // Extract 16-bit color components.
--    uint32_t sa = 0x101 * ((uint32_t)s[3]);
--    uint32_t sb = 0x101 * ((uint32_t)s[2]);
--    uint32_t sg = 0x101 * ((uint32_t)s[1]);
--    uint32_t sr = 0x101 * ((uint32_t)s[0]);
-+  uint8_t* d = dst.ptr;
-+  uint8_t* s = src.ptr;
-+  size_t n = len;
- 
--    // Convert from 565 color to 16-bit color.
--    uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
--    uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
--    uint32_t dr = (0x8421 * old_r5) >> 4;
--    uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
--    uint32_t dg = (0x1041 * old_g6) >> 2;
--    uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
--    uint32_t db = (0x8421 * old_b5) >> 4;
-+  while (n--) {
-+    *d = (uint8_t)((wuffs_base__parse_number__hexadecimal_digits[s[0]] << 4) |
-+                   (wuffs_base__parse_number__hexadecimal_digits[s[1]] & 0x0F));
-+    d += 1;
-+    s += 2;
-+  }
- 
--    // Calculate the inverse of the src-alpha: how much of the dst to keep.
--    uint32_t ia = 0xFFFF - sa;
-+  o.num_dst = len;
-+  o.num_src = len * 2;
-+  return o;
-+}
- 
--    // Composite src (premul) over dst (premul).
--    dr = sr + ((dr * ia) / 0xFFFF);
--    dg = sg + ((dg * ia) / 0xFFFF);
--    db = sb + ((db * ia) / 0xFFFF);
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
-+wuffs_base__base_16__decode4(wuffs_base__slice_u8 dst,
-+                             wuffs_base__slice_u8 src,
-+                             bool src_closed,
-+                             uint32_t options) {
-+  wuffs_base__transform__output o;
-+  size_t src_len4 = src.len / 4;
-+  size_t len = dst.len < src_len4 ? dst.len : src_len4;
-+  if (dst.len < src_len4) {
-+    len = dst.len;
-+    o.status.repr = wuffs_base__suspension__short_write;
-+  } else {
-+    len = src_len4;
-+    if (!src_closed) {
-+      o.status.repr = wuffs_base__suspension__short_read;
-+    } else if (src.len & 1) {
-+      o.status.repr = wuffs_base__error__bad_data;
-+    } else {
-+      o.status.repr = NULL;
-+    }
-+  }
- 
--    // Convert from 16-bit color to 565 color and combine the components.
--    uint32_t new_r5 = 0x1F & (dr >> 11);
--    uint32_t new_g6 = 0x3F & (dg >> 10);
--    uint32_t new_b5 = 0x1F & (db >> 11);
--    uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
--    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
-+  uint8_t* d = dst.ptr;
-+  uint8_t* s = src.ptr;
-+  size_t n = len;
- 
--    s += 1 * 4;
--    d += 1 * 2;
--    n -= 1;
-+  while (n--) {
-+    *d = (uint8_t)((wuffs_base__parse_number__hexadecimal_digits[s[2]] << 4) |
-+                   (wuffs_base__parse_number__hexadecimal_digits[s[3]] & 0x0F));
-+    d += 1;
-+    s += 4;
-   }
- 
--  return len;
-+  o.num_dst = len;
-+  o.num_src = len * 4;
-+  return o;
- }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr_565__y(uint8_t* dst_ptr,
--                                       size_t dst_len,
--                                       uint8_t* dst_palette_ptr,
--                                       size_t dst_palette_len,
--                                       const uint8_t* src_ptr,
--                                       size_t src_len) {
--  size_t dst_len2 = dst_len / 2;
--  size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
--
--  // TODO: unroll.
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
-+wuffs_base__base_16__encode2(wuffs_base__slice_u8 dst,
-+                             wuffs_base__slice_u8 src,
-+                             bool src_closed,
-+                             uint32_t options) {
-+  wuffs_base__transform__output o;
-+  size_t dst_len2 = dst.len / 2;
-+  size_t len;
-+  if (dst_len2 < src.len) {
-+    len = dst_len2;
-+    o.status.repr = wuffs_base__suspension__short_write;
-+  } else {
-+    len = src.len;
-+    if (!src_closed) {
-+      o.status.repr = wuffs_base__suspension__short_read;
-+    } else {
-+      o.status.repr = NULL;
-+    }
-+  }
- 
--  while (n >= 1) {
--    uint32_t y5 = s[0] >> 3;
--    uint32_t y6 = s[0] >> 2;
--    uint32_t rgb_565 = (y5 << 11) | (y6 << 5) | (y5 << 0);
--    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
-+  uint8_t* d = dst.ptr;
-+  uint8_t* s = src.ptr;
-+  size_t n = len;
- 
--    s += 1 * 1;
--    d += 1 * 2;
--    n -= 1;
-+  while (n--) {
-+    uint8_t c = *s;
-+    d[0] = wuffs_private_impl__encode_base16[c >> 4];
-+    d[1] = wuffs_private_impl__encode_base16[c & 0x0F];
-+    d += 2;
-+    s += 1;
-   }
- 
--  return len;
-+  o.num_dst = len * 2;
-+  o.num_src = len;
-+  return o;
- }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr_565__y_16be(uint8_t* dst_ptr,
--                                            size_t dst_len,
--                                            uint8_t* dst_palette_ptr,
--                                            size_t dst_palette_len,
--                                            const uint8_t* src_ptr,
--                                            size_t src_len) {
--  size_t dst_len2 = dst_len / 2;
--  size_t src_len2 = src_len / 2;
--  size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
--
--  // TODO: unroll.
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
-+wuffs_base__base_16__encode4(wuffs_base__slice_u8 dst,
-+                             wuffs_base__slice_u8 src,
-+                             bool src_closed,
-+                             uint32_t options) {
-+  wuffs_base__transform__output o;
-+  size_t dst_len4 = dst.len / 4;
-+  size_t len;
-+  if (dst_len4 < src.len) {
-+    len = dst_len4;
-+    o.status.repr = wuffs_base__suspension__short_write;
-+  } else {
-+    len = src.len;
-+    if (!src_closed) {
-+      o.status.repr = wuffs_base__suspension__short_read;
-+    } else {
-+      o.status.repr = NULL;
-+    }
-+  }
- 
--  while (n >= 1) {
--    uint32_t y5 = s[0] >> 3;
--    uint32_t y6 = s[0] >> 2;
--    uint32_t rgb_565 = (y5 << 11) | (y6 << 5) | (y5 << 0);
--    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
-+  uint8_t* d = dst.ptr;
-+  uint8_t* s = src.ptr;
-+  size_t n = len;
- 
--    s += 1 * 2;
--    d += 1 * 2;
--    n -= 1;
-+  while (n--) {
-+    uint8_t c = *s;
-+    d[0] = '\\';
-+    d[1] = 'x';
-+    d[2] = wuffs_private_impl__encode_base16[c >> 4];
-+    d[3] = wuffs_private_impl__encode_base16[c & 0x0F];
-+    d += 4;
-+    s += 1;
-   }
- 
--  return len;
-+  o.num_dst = len * 4;
-+  o.num_src = len;
-+  return o;
- }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr_565__index__src(uint8_t* dst_ptr,
--                                                size_t dst_len,
--                                                uint8_t* dst_palette_ptr,
--                                                size_t dst_palette_len,
--                                                const uint8_t* src_ptr,
--                                                size_t src_len) {
--  if (dst_palette_len !=
--      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
--    return 0;
--  }
--  size_t dst_len2 = dst_len / 2;
--  size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+// ---------------- Base-64
- 
--  const size_t loop_unroll_count = 4;
-+// The two base-64 alphabets, std and url, differ only in the last two codes.
-+//  - std: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
-+//  - url: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_"
- 
--  while (n >= loop_unroll_count) {
--    wuffs_base__poke_u16le__no_bounds_check(
--        d + (0 * 2), wuffs_base__peek_u16le__no_bounds_check(
--                         dst_palette_ptr + ((size_t)s[0] * 4)));
--    wuffs_base__poke_u16le__no_bounds_check(
--        d + (1 * 2), wuffs_base__peek_u16le__no_bounds_check(
--                         dst_palette_ptr + ((size_t)s[1] * 4)));
--    wuffs_base__poke_u16le__no_bounds_check(
--        d + (2 * 2), wuffs_base__peek_u16le__no_bounds_check(
--                         dst_palette_ptr + ((size_t)s[2] * 4)));
--    wuffs_base__poke_u16le__no_bounds_check(
--        d + (3 * 2), wuffs_base__peek_u16le__no_bounds_check(
--                         dst_palette_ptr + ((size_t)s[3] * 4)));
-+static const uint8_t wuffs_base__base_64__decode_std[256] = {
-+    // 0     1     2     3     4     5     6     7
-+    // 8     9     A     B     C     D     E     F
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x00 ..= 0x07.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x08 ..= 0x0F.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x10 ..= 0x17.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x18 ..= 0x1F.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x20 ..= 0x27.
-+    0x80, 0x80, 0x80, 0x3E, 0x80, 0x80, 0x80, 0x3F,  // 0x28 ..= 0x2F.
-+    0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B,  // 0x30 ..= 0x37.
-+    0x3C, 0x3D, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x38 ..= 0x3F.
- 
--    s += loop_unroll_count * 1;
--    d += loop_unroll_count * 2;
--    n -= loop_unroll_count;
--  }
-+    0x80, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,  // 0x40 ..= 0x47.
-+    0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E,  // 0x48 ..= 0x4F.
-+    0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,  // 0x50 ..= 0x57.
-+    0x17, 0x18, 0x19, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x58 ..= 0x5F.
-+    0x80, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20,  // 0x60 ..= 0x67.
-+    0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,  // 0x68 ..= 0x6F.
-+    0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30,  // 0x70 ..= 0x77.
-+    0x31, 0x32, 0x33, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x78 ..= 0x7F.
- 
--  while (n >= 1) {
--    wuffs_base__poke_u16le__no_bounds_check(
--        d + (0 * 2), wuffs_base__peek_u16le__no_bounds_check(
--                         dst_palette_ptr + ((size_t)s[0] * 4)));
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x80 ..= 0x87.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x88 ..= 0x8F.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x90 ..= 0x97.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x98 ..= 0x9F.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xA0 ..= 0xA7.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xA8 ..= 0xAF.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xB0 ..= 0xB7.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xB8 ..= 0xBF.
- 
--    s += 1 * 1;
--    d += 1 * 2;
--    n -= 1;
--  }
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xC0 ..= 0xC7.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xC8 ..= 0xCF.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xD0 ..= 0xD7.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xD8 ..= 0xDF.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xE0 ..= 0xE7.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xE8 ..= 0xEF.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xF0 ..= 0xF7.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xF8 ..= 0xFF.
-+    // 0     1     2     3     4     5     6     7
-+    // 8     9     A     B     C     D     E     F
-+};
- 
--  return len;
--}
-+static const uint8_t wuffs_base__base_64__decode_url[256] = {
-+    // 0     1     2     3     4     5     6     7
-+    // 8     9     A     B     C     D     E     F
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x00 ..= 0x07.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x08 ..= 0x0F.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x10 ..= 0x17.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x18 ..= 0x1F.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x20 ..= 0x27.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x3E, 0x80, 0x80,  // 0x28 ..= 0x2F.
-+    0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B,  // 0x30 ..= 0x37.
-+    0x3C, 0x3D, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x38 ..= 0x3F.
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr_565__index_bgra_nonpremul__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  if (dst_palette_len !=
--      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
--    return 0;
--  }
--  size_t dst_len2 = dst_len / 2;
--  size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+    0x80, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,  // 0x40 ..= 0x47.
-+    0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E,  // 0x48 ..= 0x4F.
-+    0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,  // 0x50 ..= 0x57.
-+    0x17, 0x18, 0x19, 0x80, 0x80, 0x80, 0x80, 0x3F,  // 0x58 ..= 0x5F.
-+    0x80, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20,  // 0x60 ..= 0x67.
-+    0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,  // 0x68 ..= 0x6F.
-+    0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30,  // 0x70 ..= 0x77.
-+    0x31, 0x32, 0x33, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x78 ..= 0x7F.
- 
--  // TODO: unroll.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x80 ..= 0x87.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x88 ..= 0x8F.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x90 ..= 0x97.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0x98 ..= 0x9F.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xA0 ..= 0xA7.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xA8 ..= 0xAF.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xB0 ..= 0xB7.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xB8 ..= 0xBF.
- 
--  while (n >= 1) {
--    uint32_t d0 = wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
--        wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2)));
--    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
--                                                          ((size_t)s[0] * 4));
--    wuffs_base__poke_u16le__no_bounds_check(
--        d + (0 * 2),
--        wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
--            wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0)));
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xC0 ..= 0xC7.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xC8 ..= 0xCF.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xD0 ..= 0xD7.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xD8 ..= 0xDF.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xE0 ..= 0xE7.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xE8 ..= 0xEF.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xF0 ..= 0xF7.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xF8 ..= 0xFF.
-+    // 0     1     2     3     4     5     6     7
-+    // 8     9     A     B     C     D     E     F
-+};
- 
--    s += 1 * 1;
--    d += 1 * 2;
--    n -= 1;
--  }
-+static const uint8_t wuffs_base__base_64__encode_std[64] = {
-+    // 0     1     2     3     4     5     6     7
-+    // 8     9     A     B     C     D     E     F
-+    0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,  // 0x00 ..= 0x07.
-+    0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50,  // 0x08 ..= 0x0F.
-+    0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,  // 0x10 ..= 0x17.
-+    0x59, 0x5A, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66,  // 0x18 ..= 0x1F.
-+    0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E,  // 0x20 ..= 0x27.
-+    0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76,  // 0x28 ..= 0x2F.
-+    0x77, 0x78, 0x79, 0x7A, 0x30, 0x31, 0x32, 0x33,  // 0x30 ..= 0x37.
-+    0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x2B, 0x2F,  // 0x38 ..= 0x3F.
-+};
- 
--  return len;
--}
-+static const uint8_t wuffs_base__base_64__encode_url[64] = {
-+    // 0     1     2     3     4     5     6     7
-+    // 8     9     A     B     C     D     E     F
-+    0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,  // 0x00 ..= 0x07.
-+    0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50,  // 0x08 ..= 0x0F.
-+    0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,  // 0x10 ..= 0x17.
-+    0x59, 0x5A, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66,  // 0x18 ..= 0x1F.
-+    0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E,  // 0x20 ..= 0x27.
-+    0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76,  // 0x28 ..= 0x2F.
-+    0x77, 0x78, 0x79, 0x7A, 0x30, 0x31, 0x32, 0x33,  // 0x30 ..= 0x37.
-+    0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x2D, 0x5F,  // 0x38 ..= 0x3F.
-+};
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr_565__index_binary_alpha__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  if (dst_palette_len !=
--      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
--    return 0;
--  }
--  size_t dst_len2 = dst_len / 2;
--  size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+// --------
- 
--  // TODO: unroll.
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
-+wuffs_base__base_64__decode(wuffs_base__slice_u8 dst,
-+                            wuffs_base__slice_u8 src,
-+                            bool src_closed,
-+                            uint32_t options) {
-+  const uint8_t* alphabet = (options & WUFFS_BASE__BASE_64__URL_ALPHABET)
-+                                ? wuffs_base__base_64__decode_url
-+                                : wuffs_base__base_64__decode_std;
-+  wuffs_base__transform__output o;
-+  uint8_t* d_ptr = dst.ptr;
-+  size_t d_len = dst.len;
-+  const uint8_t* s_ptr = src.ptr;
-+  size_t s_len = src.len;
-+  bool pad = false;
- 
--  while (n >= 1) {
--    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
--                                                          ((size_t)s[0] * 4));
--    if (s0) {
--      wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)s0);
--    }
-+  while (s_len >= 4) {
-+    uint32_t s = wuffs_base__peek_u32le__no_bounds_check(s_ptr);
-+    uint32_t s0 = alphabet[0xFF & (s >> 0)];
-+    uint32_t s1 = alphabet[0xFF & (s >> 8)];
-+    uint32_t s2 = alphabet[0xFF & (s >> 16)];
-+    uint32_t s3 = alphabet[0xFF & (s >> 24)];
- 
--    s += 1 * 1;
--    d += 1 * 2;
--    n -= 1;
--  }
-+    if (((s0 | s1 | s2 | s3) & 0xC0) != 0) {
-+      if (s_len > 4) {
-+        o.status.repr = wuffs_base__error__bad_data;
-+        goto done;
-+      } else if (!src_closed) {
-+        o.status.repr = wuffs_base__suspension__short_read;
-+        goto done;
-+      } else if ((options & WUFFS_BASE__BASE_64__DECODE_ALLOW_PADDING) &&
-+                 (s_ptr[3] == '=')) {
-+        pad = true;
-+        if (s_ptr[2] == '=') {
-+          goto src2;
-+        }
-+        goto src3;
-+      }
-+      o.status.repr = wuffs_base__error__bad_data;
-+      goto done;
-+    }
- 
--  return len;
--}
-+    if (d_len < 3) {
-+      o.status.repr = wuffs_base__suspension__short_write;
-+      goto done;
-+    }
- 
--// --------
-+    s_ptr += 4;
-+    s_len -= 4;
-+    s = (s0 << 18) | (s1 << 12) | (s2 << 6) | (s3 << 0);
-+    *d_ptr++ = (uint8_t)(s >> 16);
-+    *d_ptr++ = (uint8_t)(s >> 8);
-+    *d_ptr++ = (uint8_t)(s >> 0);
-+    d_len -= 3;
-+  }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr__bgr_565(uint8_t* dst_ptr,
--                                         size_t dst_len,
--                                         uint8_t* dst_palette_ptr,
--                                         size_t dst_palette_len,
--                                         const uint8_t* src_ptr,
--                                         size_t src_len) {
--  size_t dst_len3 = dst_len / 3;
--  size_t src_len2 = src_len / 2;
--  size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+  if (!src_closed) {
-+    o.status.repr = wuffs_base__suspension__short_read;
-+    goto done;
-+  }
- 
--  // TODO: unroll.
-+  if (s_len == 0) {
-+    o.status.repr = NULL;
-+    goto done;
-+  } else if (s_len == 1) {
-+    o.status.repr = wuffs_base__error__bad_data;
-+    goto done;
-+  } else if (s_len == 2) {
-+    goto src2;
-+  }
- 
--  while (n >= 1) {
--    uint32_t s0 = wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
--        wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2)));
--    wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
-+src3:
-+  do {
-+    uint32_t s = wuffs_base__peek_u24le__no_bounds_check(s_ptr);
-+    uint32_t s0 = alphabet[0xFF & (s >> 0)];
-+    uint32_t s1 = alphabet[0xFF & (s >> 8)];
-+    uint32_t s2 = alphabet[0xFF & (s >> 16)];
-+    if ((s0 & 0xC0) || (s1 & 0xC0) || (s2 & 0xC3)) {
-+      o.status.repr = wuffs_base__error__bad_data;
-+      goto done;
-+    }
-+    if (d_len < 2) {
-+      o.status.repr = wuffs_base__suspension__short_write;
-+      goto done;
-+    }
-+    s_ptr += pad ? 4 : 3;
-+    s = (s0 << 18) | (s1 << 12) | (s2 << 6);
-+    *d_ptr++ = (uint8_t)(s >> 16);
-+    *d_ptr++ = (uint8_t)(s >> 8);
-+    o.status.repr = NULL;
-+    goto done;
-+  } while (0);
- 
--    s += 1 * 2;
--    d += 1 * 3;
--    n -= 1;
--  }
-+src2:
-+  do {
-+    uint32_t s = wuffs_base__peek_u16le__no_bounds_check(s_ptr);
-+    uint32_t s0 = alphabet[0xFF & (s >> 0)];
-+    uint32_t s1 = alphabet[0xFF & (s >> 8)];
-+    if ((s0 & 0xC0) || (s1 & 0xCF)) {
-+      o.status.repr = wuffs_base__error__bad_data;
-+      goto done;
-+    }
-+    if (d_len < 1) {
-+      o.status.repr = wuffs_base__suspension__short_write;
-+      goto done;
-+    }
-+    s_ptr += pad ? 4 : 2;
-+    s = (s0 << 18) | (s1 << 12);
-+    *d_ptr++ = (uint8_t)(s >> 16);
-+    o.status.repr = NULL;
-+    goto done;
-+  } while (0);
- 
--  return len;
-+done:
-+  o.num_dst = (size_t)(d_ptr - dst.ptr);
-+  o.num_src = (size_t)(s_ptr - src.ptr);
-+  return o;
- }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src(uint8_t* dst_ptr,
--                                                     size_t dst_len,
--                                                     uint8_t* dst_palette_ptr,
--                                                     size_t dst_palette_len,
--                                                     const uint8_t* src_ptr,
--                                                     size_t src_len) {
--  size_t dst_len3 = dst_len / 3;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output  //
-+wuffs_base__base_64__encode(wuffs_base__slice_u8 dst,
-+                            wuffs_base__slice_u8 src,
-+                            bool src_closed,
-+                            uint32_t options) {
-+  const uint8_t* alphabet = (options & WUFFS_BASE__BASE_64__URL_ALPHABET)
-+                                ? wuffs_base__base_64__encode_url
-+                                : wuffs_base__base_64__encode_std;
-+  wuffs_base__transform__output o;
-+  uint8_t* d_ptr = dst.ptr;
-+  size_t d_len = dst.len;
-+  const uint8_t* s_ptr = src.ptr;
-+  size_t s_len = src.len;
- 
--  // TODO: unroll.
-+  do {
-+    while (s_len >= 3) {
-+      if (d_len < 4) {
-+        o.status.repr = wuffs_base__suspension__short_write;
-+        goto done;
-+      }
-+      uint32_t s = wuffs_base__peek_u24be__no_bounds_check(s_ptr);
-+      s_ptr += 3;
-+      s_len -= 3;
-+      *d_ptr++ = alphabet[0x3F & (s >> 18)];
-+      *d_ptr++ = alphabet[0x3F & (s >> 12)];
-+      *d_ptr++ = alphabet[0x3F & (s >> 6)];
-+      *d_ptr++ = alphabet[0x3F & (s >> 0)];
-+      d_len -= 4;
-+    }
- 
--  while (n >= 1) {
--    uint32_t s0 =
--        wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
--            wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
--    wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
-+    if (!src_closed) {
-+      o.status.repr = wuffs_base__suspension__short_read;
-+      goto done;
-+    }
- 
--    s += 1 * 4;
--    d += 1 * 3;
--    n -= 1;
--  }
-+    if (s_len == 2) {
-+      if (d_len <
-+          ((options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) ? 4 : 3)) {
-+        o.status.repr = wuffs_base__suspension__short_write;
-+        goto done;
-+      }
-+      uint32_t s = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(s_ptr)))
-+                   << 8;
-+      s_ptr += 2;
-+      *d_ptr++ = alphabet[0x3F & (s >> 18)];
-+      *d_ptr++ = alphabet[0x3F & (s >> 12)];
-+      *d_ptr++ = alphabet[0x3F & (s >> 6)];
-+      if (options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) {
-+        *d_ptr++ = '=';
-+      }
-+      o.status.repr = NULL;
-+      goto done;
- 
--  return len;
--}
-+    } else if (s_len == 1) {
-+      if (d_len <
-+          ((options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) ? 4 : 2)) {
-+        o.status.repr = wuffs_base__suspension__short_write;
-+        goto done;
-+      }
-+      uint32_t s = ((uint32_t)(wuffs_base__peek_u8__no_bounds_check(s_ptr)))
-+                   << 16;
-+      s_ptr += 1;
-+      *d_ptr++ = alphabet[0x3F & (s >> 18)];
-+      *d_ptr++ = alphabet[0x3F & (s >> 12)];
-+      if (options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) {
-+        *d_ptr++ = '=';
-+        *d_ptr++ = '=';
-+      }
-+      o.status.repr = NULL;
-+      goto done;
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len3 = dst_len / 3;
--  size_t src_len8 = src_len / 8;
--  size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+    } else {
-+      o.status.repr = NULL;
-+      goto done;
-+    }
-+  } while (0);
- 
--  // TODO: unroll.
-+done:
-+  o.num_dst = (size_t)(d_ptr - dst.ptr);
-+  o.num_src = (size_t)(s_ptr - src.ptr);
-+  return o;
-+}
- 
--  while (n >= 1) {
--    uint32_t s0 =
--        wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
--            wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)));
--    wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
-+#endif  // !defined(WUFFS_CONFIG__MODULES) ||
-+        // defined(WUFFS_CONFIG__MODULE__BASE) ||
-+        // defined(WUFFS_CONFIG__MODULE__BASE__INTCONV)
- 
--    s += 1 * 8;
--    d += 1 * 3;
--    n -= 1;
--  }
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
-+    defined(WUFFS_CONFIG__MODULE__BASE__MAGIC)
- 
--  return len;
--}
-+// ---------------- Magic Numbers
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len3 = dst_len / 3;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+// ICO doesn't start with a magic identifier. Instead, see if the opening bytes
-+// are plausibly ICO.
-+//
-+// Callers should have already verified that (prefix_data.len >= 2) and the
-+// first two bytes are 0x00.
-+//
-+// See:
-+//  - https://docs.fileformat.com/image/ico/
-+static int32_t  //
-+wuffs_base__magic_number_guess_fourcc__maybe_ico(
-+    wuffs_base__slice_u8 prefix_data,
-+    bool prefix_closed) {
-+  // Allow-list for the Image Type field.
-+  if (prefix_data.len < 4) {
-+    return prefix_closed ? 0 : -1;
-+  } else if (prefix_data.ptr[3] != 0) {
-+    return 0;
-+  }
-+  switch (prefix_data.ptr[2]) {
-+    case 0x01:  // ICO
-+    case 0x02:  // CUR
-+      break;
-+    default:
-+      return 0;
-+  }
- 
--  // TODO: unroll.
-+  // The Number Of Images should be positive.
-+  if (prefix_data.len < 6) {
-+    return prefix_closed ? 0 : -1;
-+  } else if ((prefix_data.ptr[4] == 0) && (prefix_data.ptr[5] == 0)) {
-+    return 0;
-+  }
- 
--  while (n >= 1) {
--    // Extract 16-bit color components.
--    uint32_t dr = 0x101 * ((uint32_t)d[2]);
--    uint32_t dg = 0x101 * ((uint32_t)d[1]);
--    uint32_t db = 0x101 * ((uint32_t)d[0]);
--    uint32_t sa = 0x101 * ((uint32_t)s[3]);
--    uint32_t sr = 0x101 * ((uint32_t)s[2]);
--    uint32_t sg = 0x101 * ((uint32_t)s[1]);
--    uint32_t sb = 0x101 * ((uint32_t)s[0]);
-+  // The first ICONDIRENTRY's fourth byte should be zero.
-+  if (prefix_data.len < 10) {
-+    return prefix_closed ? 0 : -1;
-+  } else if (prefix_data.ptr[9] != 0) {
-+    return 0;
-+  }
- 
--    // Calculate the inverse of the src-alpha: how much of the dst to keep.
--    uint32_t ia = 0xFFFF - sa;
-+  // TODO: have a separate FourCC for CUR?
-+  return 0x49434F20;  // 'ICO 'be
-+}
- 
--    // Composite src (nonpremul) over dst (premul).
--    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
--    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
--    db = ((sb * sa) + (db * ia)) / 0xFFFF;
-+// TGA doesn't start with a magic identifier. Instead, see if the opening bytes
-+// are plausibly TGA.
-+//
-+// Callers should have already verified that (prefix_data.len >= 2) and the
-+// second byte (prefix_data.ptr[1], the Color Map Type byte), is either 0x00 or
-+// 0x01.
-+//
-+// See:
-+//  - https://docs.fileformat.com/image/tga/
-+//  - https://www.dca.fee.unicamp.br/~martino/disciplinas/ea978/tgaffs.pdf
-+static int32_t  //
-+wuffs_base__magic_number_guess_fourcc__maybe_tga(
-+    wuffs_base__slice_u8 prefix_data,
-+    bool prefix_closed) {
-+  // Allow-list for the Image Type field.
-+  if (prefix_data.len < 3) {
-+    return prefix_closed ? 0 : -1;
-+  }
-+  switch (prefix_data.ptr[2]) {
-+    case 0x01:
-+    case 0x02:
-+    case 0x03:
-+    case 0x09:
-+    case 0x0A:
-+    case 0x0B:
-+      break;
-+    default:
-+      // TODO: 0x20 and 0x21 are invalid, according to the spec, but are
-+      // apparently unofficial extensions.
-+      return 0;
-+  }
- 
--    // Convert from 16-bit color to 8-bit color.
--    d[0] = (uint8_t)(db >> 8);
--    d[1] = (uint8_t)(dg >> 8);
--    d[2] = (uint8_t)(dr >> 8);
-+  // Allow-list for the Color Map Entry Size field (if the Color Map Type field
-+  // is non-zero) or else all the Color Map fields should be zero.
-+  if (prefix_data.len < 8) {
-+    return prefix_closed ? 0 : -1;
-+  } else if (prefix_data.ptr[1] != 0x00) {
-+    switch (prefix_data.ptr[7]) {
-+      case 0x0F:
-+      case 0x10:
-+      case 0x18:
-+      case 0x20:
-+        break;
-+      default:
-+        return 0;
-+    }
-+  } else if ((prefix_data.ptr[3] | prefix_data.ptr[4] | prefix_data.ptr[5] |
-+              prefix_data.ptr[6] | prefix_data.ptr[7]) != 0x00) {
-+    return 0;
-+  }
- 
--    s += 1 * 4;
--    d += 1 * 3;
--    n -= 1;
-+  // Allow-list for the Pixel Depth field.
-+  if (prefix_data.len < 17) {
-+    return prefix_closed ? 0 : -1;
-+  }
-+  switch (prefix_data.ptr[16]) {
-+    case 0x01:
-+    case 0x08:
-+    case 0x0F:
-+    case 0x10:
-+    case 0x18:
-+    case 0x20:
-+      break;
-+    default:
-+      return 0;
-   }
- 
--  return len;
-+  return 0x54474120;  // 'TGA 'be
- }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len3 = dst_len / 3;
--  size_t src_len8 = src_len / 8;
--  size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+WUFFS_BASE__MAYBE_STATIC int32_t  //
-+wuffs_base__magic_number_guess_fourcc(wuffs_base__slice_u8 prefix_data,
-+                                      bool prefix_closed) {
-+  // This is similar to (but different from):
-+  //  - the magic/Magdir tables under https://github.com/file/file
-+  //  - the MIME Sniffing algorithm at https://mimesniff.spec.whatwg.org/
- 
--  // TODO: unroll.
-+  // table holds the 'magic numbers' (which are actually variable length
-+  // strings). The strings may contain NUL bytes, so the "const char* magic"
-+  // value starts with the length-minus-1 of the 'magic number'.
-+  //
-+  // Keep it sorted by magic[1], then magic[0] descending (prioritizing longer
-+  // matches) and finally by magic[2:]. When multiple entries match, the
-+  // longest one wins.
-+  //
-+  // The fourcc field might be negated, in which case there's further
-+  // specialization (see § below).
-+  static struct {
-+    int32_t fourcc;
-+    const char* magic;
-+  } table[] = {
-+      {-0x30302020, "\x01\x00\x00"},              // '00  'be
-+      {+0x475A2020, "\x02\x1F\x8B\x08"},          // GZ
-+      {+0x5A535444, "\x03\x28\xB5\x2F\xFD"},      // ZSTD
-+      {+0x425A3220, "\x02\x42\x5A\x68"},          // BZ2
-+      {+0x424D5020, "\x01\x42\x4D"},              // BMP
-+      {+0x47494620, "\x03\x47\x49\x46\x38"},      // GIF
-+      {+0x54494646, "\x03\x49\x49\x2A\x00"},      // TIFF (little-endian)
-+      {+0x4C5A4950, "\x04\x4C\x5A\x49\x50\x01"},  // LZIP
-+      {+0x54494646, "\x03\x4D\x4D\x00\x2A"},      // TIFF (big-endian)
-+      {+0x4E50424D, "\x02\x50\x35\x0A"},          // NPBM (P5; *.pgm)
-+      {+0x4E50424D, "\x02\x50\x36\x0A"},          // NPBM (P6; *.ppm)
-+      {-0x52494646, "\x03\x52\x49\x46\x46"},      // RIFF
-+      {+0x4C5A4D41, "\x04\x5D\x00\x10\x00\x00"},  // LZMA
-+      {+0x4C5A4D41, "\x02\x5D\x00\x00"},          // LZMA
-+      {+0x4E494520, "\x02\x6E\xC3\xAF"},          // NIE
-+      {+0x514F4920, "\x03\x71\x6F\x69\x66"},      // QOI
-+      {+0x5A4C4942, "\x01\x78\x9C"},              // ZLIB
-+      {+0x504E4720, "\x03\x89\x50\x4E\x47"},      // PNG
-+      {+0x585A2020, "\x04\xFD\x37\x7A\x58\x5A"},  // XZ
-+      {+0x4A504547, "\x01\xFF\xD8"},              // JPEG
-+  };
-+  static const size_t table_len = sizeof(table) / sizeof(table[0]);
- 
--  while (n >= 1) {
--    // Extract 16-bit color components.
--    uint32_t dr = 0x101 * ((uint32_t)d[2]);
--    uint32_t dg = 0x101 * ((uint32_t)d[1]);
--    uint32_t db = 0x101 * ((uint32_t)d[0]);
--    uint32_t sa = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 6));
--    uint32_t sr = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 4));
--    uint32_t sg = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 2));
--    uint32_t sb = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 0));
-+  if (prefix_data.len == 0) {
-+    return prefix_closed ? 0 : -1;
-+  }
-+  uint8_t pre_first_byte = prefix_data.ptr[0];
- 
--    // Calculate the inverse of the src-alpha: how much of the dst to keep.
--    uint32_t ia = 0xFFFF - sa;
-+  int32_t fourcc = 0;
-+  size_t i;
-+  for (i = 0; i < table_len; i++) {
-+    uint8_t mag_first_byte = ((uint8_t)(table[i].magic[1]));
-+    if (pre_first_byte < mag_first_byte) {
-+      break;
-+    } else if (pre_first_byte > mag_first_byte) {
-+      continue;
-+    }
-+    fourcc = table[i].fourcc;
- 
--    // Composite src (nonpremul) over dst (premul).
--    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
--    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
--    db = ((sb * sa) + (db * ia)) / 0xFFFF;
-+    uint8_t mag_remaining_len = ((uint8_t)(table[i].magic[0]));
-+    if (mag_remaining_len == 0) {
-+      goto match;
-+    }
- 
--    // Convert from 16-bit color to 8-bit color.
--    d[0] = (uint8_t)(db >> 8);
--    d[1] = (uint8_t)(dg >> 8);
--    d[2] = (uint8_t)(dr >> 8);
-+    const char* mag_remaining_ptr = table[i].magic + 2;
-+    uint8_t* pre_remaining_ptr = prefix_data.ptr + 1;
-+    size_t pre_remaining_len = prefix_data.len - 1;
-+    if (pre_remaining_len < mag_remaining_len) {
-+      if (!memcmp(pre_remaining_ptr, mag_remaining_ptr, pre_remaining_len)) {
-+        return prefix_closed ? 0 : -1;
-+      }
-+    } else {
-+      if (!memcmp(pre_remaining_ptr, mag_remaining_ptr, mag_remaining_len)) {
-+        goto match;
-+      }
-+    }
-+  }
- 
--    s += 1 * 8;
--    d += 1 * 3;
--    n -= 1;
-+  if (prefix_data.len < 2) {
-+    return prefix_closed ? 0 : -1;
-+  } else if ((prefix_data.ptr[1] == 0x00) || (prefix_data.ptr[1] == 0x01)) {
-+    return wuffs_base__magic_number_guess_fourcc__maybe_tga(prefix_data,
-+                                                            prefix_closed);
-   }
- 
--  return len;
--}
-+  return 0;
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr__bgra_premul__src(uint8_t* dst_ptr,
--                                                  size_t dst_len,
--                                                  uint8_t* dst_palette_ptr,
--                                                  size_t dst_palette_len,
--                                                  const uint8_t* src_ptr,
--                                                  size_t src_len) {
--  size_t dst_len3 = dst_len / 3;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+match:
-+  // Negative FourCC values (see § above) are further specialized.
-+  if (fourcc < 0) {
-+    fourcc = -fourcc;
- 
--  while (n >= 1) {
--    uint8_t s0 = s[0];
--    uint8_t s1 = s[1];
--    uint8_t s2 = s[2];
--    d[0] = s0;
--    d[1] = s1;
--    d[2] = s2;
-+    if (fourcc == 0x52494646) {  // 'RIFF'be
-+      if (prefix_data.len < 12) {
-+        return prefix_closed ? 0 : -1;
-+      }
-+      uint32_t x = wuffs_base__peek_u32be__no_bounds_check(prefix_data.ptr + 8);
-+      if (x == 0x57454250) {  // 'WEBP'be
-+        return 0x57454250;    // 'WEBP'be
-+      }
- 
--    s += 1 * 4;
--    d += 1 * 3;
--    n -= 1;
-+    } else if (fourcc == 0x30302020) {  // '00  'be
-+      // Binary data starting with multiple 0x00 NUL bytes is quite common.
-+      // Unfortunately, some file formats also don't start with a magic
-+      // identifier, so we have to use heuristics (where the order matters, the
-+      // same as /usr/bin/file's magic/Magdir tables) as best we can. Maybe
-+      // it's TGA, ICO/CUR, etc. Maybe it's something else.
-+      int32_t tga = wuffs_base__magic_number_guess_fourcc__maybe_tga(
-+          prefix_data, prefix_closed);
-+      if (tga != 0) {
-+        return tga;
-+      }
-+      int32_t ico = wuffs_base__magic_number_guess_fourcc__maybe_ico(
-+          prefix_data, prefix_closed);
-+      if (ico != 0) {
-+        return ico;
-+      }
-+      if (prefix_data.len < 4) {
-+        return prefix_closed ? 0 : -1;
-+      } else if ((prefix_data.ptr[2] != 0x00) &&
-+                 ((prefix_data.ptr[2] >= 0x80) ||
-+                  (prefix_data.ptr[3] != 0x00))) {
-+        // Roughly speaking, this could be a non-degenerate (non-0-width and
-+        // non-0-height) WBMP image.
-+        return 0x57424D50;  // 'WBMP'be
-+      }
-+      return 0;
-+    }
-   }
--
--  return len;
-+  return fourcc;
- }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr__bgra_premul__src_over(uint8_t* dst_ptr,
--                                                       size_t dst_len,
--                                                       uint8_t* dst_palette_ptr,
--                                                       size_t dst_palette_len,
--                                                       const uint8_t* src_ptr,
--                                                       size_t src_len) {
--  size_t dst_len3 = dst_len / 3;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
--
--  while (n >= 1) {
--    // Extract 16-bit color components.
--    uint32_t dr = 0x101 * ((uint32_t)d[2]);
--    uint32_t dg = 0x101 * ((uint32_t)d[1]);
--    uint32_t db = 0x101 * ((uint32_t)d[0]);
--    uint32_t sa = 0x101 * ((uint32_t)s[3]);
--    uint32_t sr = 0x101 * ((uint32_t)s[2]);
--    uint32_t sg = 0x101 * ((uint32_t)s[1]);
--    uint32_t sb = 0x101 * ((uint32_t)s[0]);
--
--    // Calculate the inverse of the src-alpha: how much of the dst to keep.
--    uint32_t ia = 0xFFFF - sa;
-+#endif  // !defined(WUFFS_CONFIG__MODULES) ||
-+        // defined(WUFFS_CONFIG__MODULE__BASE) ||
-+        // defined(WUFFS_CONFIG__MODULE__BASE__MAGIC)
- 
--    // Composite src (premul) over dst (premul).
--    dr = sr + ((dr * ia) / 0xFFFF);
--    dg = sg + ((dg * ia) / 0xFFFF);
--    db = sb + ((db * ia) / 0xFFFF);
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
-+    defined(WUFFS_CONFIG__MODULE__BASE__PIXCONV)
- 
--    // Convert from 16-bit color to 8-bit color.
--    d[0] = (uint8_t)(db >> 8);
--    d[1] = (uint8_t)(dg >> 8);
--    d[2] = (uint8_t)(dr >> 8);
-+// ---------------- Pixel Swizzler
- 
--    s += 1 * 4;
--    d += 1 * 3;
--    n -= 1;
--  }
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgrw__bgr__x86_sse42(uint8_t* dst_ptr,
-+                                                 size_t dst_len,
-+                                                 uint8_t* dst_palette_ptr,
-+                                                 size_t dst_palette_len,
-+                                                 const uint8_t* src_ptr,
-+                                                 size_t src_len);
- 
--  return len;
--}
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgrw__rgb__x86_sse42(uint8_t* dst_ptr,
-+                                                 size_t dst_len,
-+                                                 uint8_t* dst_palette_ptr,
-+                                                 size_t dst_palette_len,
-+                                                 const uint8_t* src_ptr,
-+                                                 size_t src_len);
- 
-+WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src(uint8_t* dst_ptr,
--                                                     size_t dst_len,
--                                                     uint8_t* dst_palette_ptr,
--                                                     size_t dst_palette_len,
--                                                     const uint8_t* src_ptr,
--                                                     size_t src_len) {
--  size_t dst_len3 = dst_len / 3;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+wuffs_private_impl__swizzle_swap_rgbx_bgrx__x86_sse42(uint8_t* dst_ptr,
-+                                                      size_t dst_len,
-+                                                      uint8_t* dst_palette_ptr,
-+                                                      size_t dst_palette_len,
-+                                                      const uint8_t* src_ptr,
-+                                                      size_t src_len);
- 
--  // TODO: unroll.
-+WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
-+static uint64_t  //
-+wuffs_private_impl__swizzle_xxxx__y__x86_sse42(uint8_t* dst_ptr,
-+                                               size_t dst_len,
-+                                               uint8_t* dst_palette_ptr,
-+                                               size_t dst_palette_len,
-+                                               const uint8_t* src_ptr,
-+                                               size_t src_len);
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
- 
--  while (n >= 1) {
--    uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
--        wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
--            wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
--    wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
-+// --------
- 
--    s += 1 * 4;
--    d += 1 * 3;
--    n -= 1;
--  }
-+static inline uint32_t  //
-+wuffs_private_impl__swap_u32_argb_abgr(uint32_t u) {
-+  uint32_t o = u & 0xFF00FF00ul;
-+  uint32_t r = u & 0x00FF0000ul;
-+  uint32_t b = u & 0x000000FFul;
-+  return o | (r >> 16) | (b << 16);
-+}
- 
--  return len;
-+static inline uint64_t  //
-+wuffs_private_impl__swap_u64_argb_abgr(uint64_t u) {
-+  uint64_t o = u & 0xFFFF0000FFFF0000ull;
-+  uint64_t r = u & 0x0000FFFF00000000ull;
-+  uint64_t b = u & 0x000000000000FFFFull;
-+  return o | (r >> 32) | (b << 32);
- }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr__rgba_nonpremul_4x16le__src(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len3 = dst_len / 3;
--  size_t src_len8 = src_len / 8;
--  size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+static inline uint32_t  //
-+wuffs_private_impl__color_u64__as__color_u32__swap_u32_argb_abgr(uint64_t c) {
-+  uint32_t a = ((uint32_t)(0xFF & (c >> 56)));
-+  uint32_t r = ((uint32_t)(0xFF & (c >> 40)));
-+  uint32_t g = ((uint32_t)(0xFF & (c >> 24)));
-+  uint32_t b = ((uint32_t)(0xFF & (c >> 8)));
-+  return (a << 24) | (b << 16) | (g << 8) | (r << 0);
-+}
- 
--  // TODO: unroll.
-+// --------
- 
--  while (n >= 1) {
--    uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
--        wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
--            wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8))));
--    wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__color_u32_argb_premul  //
-+wuffs_base__pixel_buffer__color_u32_at(const wuffs_base__pixel_buffer* pb,
-+                                       uint32_t x,
-+                                       uint32_t y) {
-+  if (!pb || (x >= pb->pixcfg.private_impl.width) ||
-+      (y >= pb->pixcfg.private_impl.height)) {
-+    return 0;
-+  }
- 
--    s += 1 * 8;
--    d += 1 * 3;
--    n -= 1;
-+  if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) {
-+    // TODO: support planar formats.
-+    return 0;
-   }
- 
--  return len;
--}
-+  size_t stride = pb->private_impl.planes[0].stride;
-+  const uint8_t* row = pb->private_impl.planes[0].ptr + (stride * ((size_t)y));
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len3 = dst_len / 3;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+  switch (pb->pixcfg.private_impl.pixfmt.repr) {
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
-+      return wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x)));
- 
--  // TODO: unroll.
-+    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: {
-+      uint8_t* palette = pb->private_impl.planes[3].ptr;
-+      return wuffs_base__peek_u32le__no_bounds_check(palette +
-+                                                     (4 * ((size_t)row[x])));
-+    }
- 
--  while (n >= 1) {
--    // Extract 16-bit color components.
--    uint32_t dr = 0x101 * ((uint32_t)d[2]);
--    uint32_t dg = 0x101 * ((uint32_t)d[1]);
--    uint32_t db = 0x101 * ((uint32_t)d[0]);
--    uint32_t sa = 0x101 * ((uint32_t)s[3]);
--    uint32_t sb = 0x101 * ((uint32_t)s[2]);
--    uint32_t sg = 0x101 * ((uint32_t)s[1]);
--    uint32_t sr = 0x101 * ((uint32_t)s[0]);
-+      // Common formats above. Rarer formats below.
- 
--    // Calculate the inverse of the src-alpha: how much of the dst to keep.
--    uint32_t ia = 0xFFFF - sa;
-+    case WUFFS_BASE__PIXEL_FORMAT__Y:
-+      return 0xFF000000 | (0x00010101 * ((uint32_t)(row[x])));
-+    case WUFFS_BASE__PIXEL_FORMAT__Y_16LE:
-+      return 0xFF000000 | (0x00010101 * ((uint32_t)(row[(2 * x) + 1])));
-+    case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
-+      return 0xFF000000 | (0x00010101 * ((uint32_t)(row[(2 * x) + 0])));
-+    case WUFFS_BASE__PIXEL_FORMAT__YA_NONPREMUL:
-+      return wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
-+          (((uint32_t)(row[(2 * x) + 1])) << 24) |
-+          (((uint32_t)(row[(2 * x) + 0])) * 0x00010101));
- 
--    // Composite src (nonpremul) over dst (premul).
--    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
--    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
--    db = ((sb * sa) + (db * ia)) / 0xFFFF;
-+    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL: {
-+      uint8_t* palette = pb->private_impl.planes[3].ptr;
-+      return wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
-+          wuffs_base__peek_u32le__no_bounds_check(palette +
-+                                                  (4 * ((size_t)row[x]))));
-+    }
- 
--    // Convert from 16-bit color to 8-bit color.
--    d[0] = (uint8_t)(db >> 8);
--    d[1] = (uint8_t)(dg >> 8);
--    d[2] = (uint8_t)(dr >> 8);
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
-+      return wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
-+          wuffs_base__peek_u16le__no_bounds_check(row + (2 * ((size_t)x))));
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR:
-+      return 0xFF000000 |
-+             wuffs_base__peek_u24le__no_bounds_check(row + (3 * ((size_t)x)));
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
-+      return wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
-+          wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x))));
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
-+      return wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
-+          wuffs_base__peek_u64le__no_bounds_check(row + (8 * ((size_t)x))));
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
-+      return 0xFF000000 |
-+             wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x)));
- 
--    s += 1 * 4;
--    d += 1 * 3;
--    n -= 1;
-+    case WUFFS_BASE__PIXEL_FORMAT__RGB:
-+      return wuffs_private_impl__swap_u32_argb_abgr(
-+          0xFF000000 |
-+          wuffs_base__peek_u24le__no_bounds_check(row + (3 * ((size_t)x))));
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
-+      return wuffs_private_impl__swap_u32_argb_abgr(
-+          wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
-+              wuffs_base__peek_u32le__no_bounds_check(row +
-+                                                      (4 * ((size_t)x)))));
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
-+      return wuffs_private_impl__swap_u32_argb_abgr(
-+          wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x))));
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
-+      return wuffs_private_impl__swap_u32_argb_abgr(
-+          0xFF000000 |
-+          wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x))));
-+
-+    default:
-+      // TODO: support more formats.
-+      break;
-   }
- 
--  return len;
-+  return 0;
- }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr__rgba_nonpremul_4x16le__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len3 = dst_len / 3;
--  size_t src_len8 = src_len / 8;
--  size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+// --------
- 
--  // TODO: unroll.
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status  //
-+wuffs_base__pixel_buffer__set_color_u32_at(
-+    wuffs_base__pixel_buffer* pb,
-+    uint32_t x,
-+    uint32_t y,
-+    wuffs_base__color_u32_argb_premul color) {
-+  if (!pb) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if ((x >= pb->pixcfg.private_impl.width) ||
-+      (y >= pb->pixcfg.private_impl.height)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
- 
--  while (n >= 1) {
--    // Extract 16-bit color components.
--    uint32_t dr = 0x101 * ((uint32_t)d[2]);
--    uint32_t dg = 0x101 * ((uint32_t)d[1]);
--    uint32_t db = 0x101 * ((uint32_t)d[0]);
--    uint32_t sa = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 6));
--    uint32_t sb = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 4));
--    uint32_t sg = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 2));
--    uint32_t sr = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 0));
-+  if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) {
-+    // TODO: support planar formats.
-+    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+  }
- 
--    // Calculate the inverse of the src-alpha: how much of the dst to keep.
--    uint32_t ia = 0xFFFF - sa;
-+  size_t stride = pb->private_impl.planes[0].stride;
-+  uint8_t* row = pb->private_impl.planes[0].ptr + (stride * ((size_t)y));
- 
--    // Composite src (nonpremul) over dst (premul).
--    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
--    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
--    db = ((sb * sa) + (db * ia)) / 0xFFFF;
-+  switch (pb->pixcfg.private_impl.pixfmt.repr) {
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
-+      wuffs_base__poke_u32le__no_bounds_check(row + (4 * ((size_t)x)), color);
-+      break;
- 
--    // Convert from 16-bit color to 8-bit color.
--    d[0] = (uint8_t)(db >> 8);
--    d[1] = (uint8_t)(dg >> 8);
--    d[2] = (uint8_t)(dr >> 8);
-+      // Common formats above. Rarer formats below.
- 
--    s += 1 * 8;
--    d += 1 * 3;
--    n -= 1;
--  }
-+    case WUFFS_BASE__PIXEL_FORMAT__Y:
-+      wuffs_base__poke_u8__no_bounds_check(
-+          row + ((size_t)x),
-+          wuffs_base__color_u32_argb_premul__as__color_u8_gray(color));
-+      break;
-+    case WUFFS_BASE__PIXEL_FORMAT__Y_16LE:
-+      wuffs_base__poke_u16le__no_bounds_check(
-+          row + (2 * ((size_t)x)),
-+          wuffs_base__color_u32_argb_premul__as__color_u16_gray(color));
-+      break;
-+    case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
-+      wuffs_base__poke_u16be__no_bounds_check(
-+          row + (2 * ((size_t)x)),
-+          wuffs_base__color_u32_argb_premul__as__color_u16_gray(color));
-+      break;
-+    case WUFFS_BASE__PIXEL_FORMAT__YA_NONPREMUL:
-+      wuffs_base__poke_u16le__no_bounds_check(
-+          row + (2 * ((size_t)x)),
-+          wuffs_base__color_u32_argb_premul__as__color_u16_alpha_gray_nonpremul(
-+              color));
-+      break;
- 
--  return len;
--}
-+    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:
-+      wuffs_base__poke_u8__no_bounds_check(
-+          row + ((size_t)x), wuffs_base__pixel_palette__closest_element(
-+                                 wuffs_base__pixel_buffer__palette(pb),
-+                                 pb->pixcfg.private_impl.pixfmt, color));
-+      break;
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr__rgba_premul__src(uint8_t* dst_ptr,
--                                                  size_t dst_len,
--                                                  uint8_t* dst_palette_ptr,
--                                                  size_t dst_palette_len,
--                                                  const uint8_t* src_ptr,
--                                                  size_t src_len) {
--  size_t dst_len3 = dst_len / 3;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
-+      wuffs_base__poke_u16le__no_bounds_check(
-+          row + (2 * ((size_t)x)),
-+          wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(color));
-+      break;
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR:
-+      wuffs_base__poke_u24le__no_bounds_check(row + (3 * ((size_t)x)), color);
-+      break;
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
-+      wuffs_base__poke_u32le__no_bounds_check(
-+          row + (4 * ((size_t)x)),
-+          wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
-+              color));
-+      break;
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
-+      wuffs_base__poke_u64le__no_bounds_check(
-+          row + (8 * ((size_t)x)),
-+          wuffs_base__color_u32_argb_premul__as__color_u64_argb_nonpremul(
-+              color));
-+      break;
- 
--  while (n >= 1) {
--    uint8_t s0 = s[0];
--    uint8_t s1 = s[1];
--    uint8_t s2 = s[2];
--    d[0] = s2;
--    d[1] = s1;
--    d[2] = s0;
-+    case WUFFS_BASE__PIXEL_FORMAT__RGB:
-+      wuffs_base__poke_u24le__no_bounds_check(
-+          row + (3 * ((size_t)x)),
-+          wuffs_private_impl__swap_u32_argb_abgr(color));
-+      break;
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
-+      wuffs_base__poke_u32le__no_bounds_check(
-+          row + (4 * ((size_t)x)),
-+          wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
-+              wuffs_private_impl__swap_u32_argb_abgr(color)));
-+      break;
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
-+      wuffs_base__poke_u32le__no_bounds_check(
-+          row + (4 * ((size_t)x)),
-+          wuffs_private_impl__swap_u32_argb_abgr(color));
-+      break;
- 
--    s += 1 * 4;
--    d += 1 * 3;
--    n -= 1;
-+    default:
-+      // TODO: support more formats.
-+      return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-   }
- 
--  return len;
-+  return wuffs_base__make_status(NULL);
- }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr__rgba_premul__src_over(uint8_t* dst_ptr,
--                                                       size_t dst_len,
--                                                       uint8_t* dst_palette_ptr,
--                                                       size_t dst_palette_len,
--                                                       const uint8_t* src_ptr,
--                                                       size_t src_len) {
--  size_t dst_len3 = dst_len / 3;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+// --------
- 
--  while (n >= 1) {
--    // Extract 16-bit color components.
--    uint32_t dr = 0x101 * ((uint32_t)d[2]);
--    uint32_t dg = 0x101 * ((uint32_t)d[1]);
--    uint32_t db = 0x101 * ((uint32_t)d[0]);
--    uint32_t sa = 0x101 * ((uint32_t)s[3]);
--    uint32_t sb = 0x101 * ((uint32_t)s[2]);
--    uint32_t sg = 0x101 * ((uint32_t)s[1]);
--    uint32_t sr = 0x101 * ((uint32_t)s[0]);
-+static inline void  //
-+wuffs_private_impl__pixel_buffer__set_color_u32_fill_rect__xx(
-+    wuffs_base__pixel_buffer* pb,
-+    wuffs_base__rect_ie_u32 rect,
-+    uint16_t color) {
-+  size_t stride = pb->private_impl.planes[0].stride;
-+  uint32_t width = wuffs_base__rect_ie_u32__width(&rect);
-+  if ((stride == (2 * ((uint64_t)width))) && (rect.min_incl_x == 0)) {
-+    uint8_t* ptr =
-+        pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y));
-+    uint32_t height = wuffs_base__rect_ie_u32__height(&rect);
-+    size_t n;
-+    for (n = ((size_t)width) * ((size_t)height); n > 0; n--) {
-+      wuffs_base__poke_u16le__no_bounds_check(ptr, color);
-+      ptr += 2;
-+    }
-+    return;
-+  }
- 
--    // Calculate the inverse of the src-alpha: how much of the dst to keep.
--    uint32_t ia = 0xFFFF - sa;
-+  uint32_t y;
-+  for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
-+    uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) +
-+                   (2 * ((size_t)rect.min_incl_x));
-+    uint32_t n;
-+    for (n = width; n > 0; n--) {
-+      wuffs_base__poke_u16le__no_bounds_check(ptr, color);
-+      ptr += 2;
-+    }
-+  }
-+}
- 
--    // Composite src (premul) over dst (premul).
--    dr = sr + ((dr * ia) / 0xFFFF);
--    dg = sg + ((dg * ia) / 0xFFFF);
--    db = sb + ((db * ia) / 0xFFFF);
-+static inline void  //
-+wuffs_private_impl__pixel_buffer__set_color_u32_fill_rect__xxx(
-+    wuffs_base__pixel_buffer* pb,
-+    wuffs_base__rect_ie_u32 rect,
-+    uint32_t color) {
-+  size_t stride = pb->private_impl.planes[0].stride;
-+  uint32_t width = wuffs_base__rect_ie_u32__width(&rect);
-+  if ((stride == (3 * ((uint64_t)width))) && (rect.min_incl_x == 0)) {
-+    uint8_t* ptr =
-+        pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y));
-+    uint32_t height = wuffs_base__rect_ie_u32__height(&rect);
-+    size_t n;
-+    for (n = ((size_t)width) * ((size_t)height); n > 0; n--) {
-+      wuffs_base__poke_u24le__no_bounds_check(ptr, color);
-+      ptr += 3;
-+    }
-+    return;
-+  }
- 
--    // Convert from 16-bit color to 8-bit color.
--    d[0] = (uint8_t)(db >> 8);
--    d[1] = (uint8_t)(dg >> 8);
--    d[2] = (uint8_t)(dr >> 8);
-+  uint32_t y;
-+  for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
-+    uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) +
-+                   (3 * ((size_t)rect.min_incl_x));
-+    uint32_t n;
-+    for (n = width; n > 0; n--) {
-+      wuffs_base__poke_u24le__no_bounds_check(ptr, color);
-+      ptr += 3;
-+    }
-+  }
-+}
- 
--    s += 1 * 4;
--    d += 1 * 3;
--    n -= 1;
-+static inline void  //
-+wuffs_private_impl__pixel_buffer__set_color_u32_fill_rect__xxxx(
-+    wuffs_base__pixel_buffer* pb,
-+    wuffs_base__rect_ie_u32 rect,
-+    uint32_t color) {
-+  size_t stride = pb->private_impl.planes[0].stride;
-+  uint32_t width = wuffs_base__rect_ie_u32__width(&rect);
-+  if ((stride == (4 * ((uint64_t)width))) && (rect.min_incl_x == 0)) {
-+    uint8_t* ptr =
-+        pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y));
-+    uint32_t height = wuffs_base__rect_ie_u32__height(&rect);
-+    size_t n;
-+    for (n = ((size_t)width) * ((size_t)height); n > 0; n--) {
-+      wuffs_base__poke_u32le__no_bounds_check(ptr, color);
-+      ptr += 4;
-+    }
-+    return;
-   }
- 
--  return len;
-+  uint32_t y;
-+  for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
-+    uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) +
-+                   (4 * ((size_t)rect.min_incl_x));
-+    uint32_t n;
-+    for (n = width; n > 0; n--) {
-+      wuffs_base__poke_u32le__no_bounds_check(ptr, color);
-+      ptr += 4;
-+    }
-+  }
- }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgr__rgbx(uint8_t* dst_ptr,
--                                      size_t dst_len,
--                                      uint8_t* dst_palette_ptr,
--                                      size_t dst_palette_len,
--                                      const uint8_t* src_ptr,
--                                      size_t src_len) {
--  size_t dst_len3 = dst_len / 3;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+static inline void  //
-+wuffs_private_impl__pixel_buffer__set_color_u32_fill_rect__xxxxxxxx(
-+    wuffs_base__pixel_buffer* pb,
-+    wuffs_base__rect_ie_u32 rect,
-+    uint64_t color) {
-+  size_t stride = pb->private_impl.planes[0].stride;
-+  uint32_t width = wuffs_base__rect_ie_u32__width(&rect);
-+  if ((stride == (8 * ((uint64_t)width))) && (rect.min_incl_x == 0)) {
-+    uint8_t* ptr =
-+        pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y));
-+    uint32_t height = wuffs_base__rect_ie_u32__height(&rect);
-+    size_t n;
-+    for (n = ((size_t)width) * ((size_t)height); n > 0; n--) {
-+      wuffs_base__poke_u64le__no_bounds_check(ptr, color);
-+      ptr += 8;
-+    }
-+    return;
-+  }
- 
--  // TODO: unroll.
-+  uint32_t y;
-+  for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
-+    uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) +
-+                   (8 * ((size_t)rect.min_incl_x));
-+    uint32_t n;
-+    for (n = width; n > 0; n--) {
-+      wuffs_base__poke_u64le__no_bounds_check(ptr, color);
-+      ptr += 8;
-+    }
-+  }
-+}
- 
--  while (n >= 1) {
--    uint8_t b0 = s[0];
--    uint8_t b1 = s[1];
--    uint8_t b2 = s[2];
--    d[0] = b2;
--    d[1] = b1;
--    d[2] = b0;
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status  //
-+wuffs_base__pixel_buffer__set_color_u32_fill_rect(
-+    wuffs_base__pixel_buffer* pb,
-+    wuffs_base__rect_ie_u32 rect,
-+    wuffs_base__color_u32_argb_premul color) {
-+  if (!pb) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  } else if (wuffs_base__rect_ie_u32__is_empty(&rect)) {
-+    return wuffs_base__make_status(NULL);
-+  }
-+  wuffs_base__rect_ie_u32 bounds =
-+      wuffs_base__pixel_config__bounds(&pb->pixcfg);
-+  if (!wuffs_base__rect_ie_u32__contains_rect(&bounds, rect)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
- 
--    s += 1 * 4;
--    d += 1 * 3;
--    n -= 1;
-+  if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) {
-+    // TODO: support planar formats.
-+    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-   }
- 
--  return len;
--}
-+  switch (pb->pixcfg.private_impl.pixfmt.repr) {
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
-+      wuffs_private_impl__pixel_buffer__set_color_u32_fill_rect__xxxx(pb, rect,
-+                                                                      color);
-+      return wuffs_base__make_status(NULL);
- 
--// --------
-+      // Common formats above. Rarer formats below.
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
-+      wuffs_private_impl__pixel_buffer__set_color_u32_fill_rect__xx(
-+          pb, rect,
-+          wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(color));
-+      return wuffs_base__make_status(NULL);
- 
--  while (n >= 1) {
--    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
--    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4),
--        wuffs_base__composite_nonpremul_nonpremul_u32_axxx(d0, s0));
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR:
-+      wuffs_private_impl__pixel_buffer__set_color_u32_fill_rect__xxx(pb, rect,
-+                                                                     color);
-+      return wuffs_base__make_status(NULL);
- 
--    s += 1 * 4;
--    d += 1 * 4;
--    n -= 1;
--  }
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
-+      wuffs_private_impl__pixel_buffer__set_color_u32_fill_rect__xxxx(
-+          pb, rect,
-+          wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
-+              color));
-+      return wuffs_base__make_status(NULL);
- 
--  return len;
--}
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
-+      wuffs_private_impl__pixel_buffer__set_color_u32_fill_rect__xxxxxxxx(
-+          pb, rect,
-+          wuffs_base__color_u32_argb_premul__as__color_u64_argb_nonpremul(
-+              color));
-+      return wuffs_base__make_status(NULL);
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
--  size_t src_len8 = src_len / 8;
--  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
-+      wuffs_private_impl__pixel_buffer__set_color_u32_fill_rect__xxxx(
-+          pb, rect,
-+          wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
-+              wuffs_private_impl__swap_u32_argb_abgr(color)));
-+      return wuffs_base__make_status(NULL);
- 
--  size_t n = len;
--  while (n >= 1) {
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4), wuffs_base__color_u64__as__color_u32(
--                         wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8))));
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
-+      wuffs_private_impl__pixel_buffer__set_color_u32_fill_rect__xxxx(
-+          pb, rect, wuffs_private_impl__swap_u32_argb_abgr(color));
-+      return wuffs_base__make_status(NULL);
-+  }
- 
--    s += 1 * 8;
--    d += 1 * 4;
--    n -= 1;
-+  uint32_t y;
-+  for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
-+    uint32_t x;
-+    for (x = rect.min_incl_x; x < rect.max_excl_x; x++) {
-+      wuffs_base__pixel_buffer__set_color_u32_at(pb, x, y, color);
-+    }
-   }
--  return len;
-+  return wuffs_base__make_status(NULL);
- }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
--  size_t src_len8 = src_len / 8;
--  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
--
--  while (n >= 1) {
--    uint64_t d0 = wuffs_base__color_u32__as__color_u64(
--        wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)));
--    uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4),
--        wuffs_base__color_u64__as__color_u32(
--            wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0)));
-+// --------
- 
--    s += 1 * 8;
--    d += 1 * 4;
--    n -= 1;
-+WUFFS_BASE__MAYBE_STATIC uint8_t  //
-+wuffs_base__pixel_palette__closest_element(
-+    wuffs_base__slice_u8 palette_slice,
-+    wuffs_base__pixel_format palette_format,
-+    wuffs_base__color_u32_argb_premul c) {
-+  size_t n = palette_slice.len / 4;
-+  if (n > (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
-+    n = (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4);
-   }
-+  size_t best_index = 0;
-+  uint64_t best_score = 0xFFFFFFFFFFFFFFFF;
- 
--  return len;
--}
--
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+  // Work in 16-bit color.
-+  uint32_t ca = 0x101 * (0xFF & (c >> 24));
-+  uint32_t cr = 0x101 * (0xFF & (c >> 16));
-+  uint32_t cg = 0x101 * (0xFF & (c >> 8));
-+  uint32_t cb = 0x101 * (0xFF & (c >> 0));
- 
--  while (n >= 1) {
--    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4),
--        wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(s0));
-+  switch (palette_format.repr) {
-+    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: {
-+      bool nonpremul = palette_format.repr ==
-+                       WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL;
- 
--    s += 1 * 4;
--    d += 1 * 4;
--    n -= 1;
-+      size_t i;
-+      for (i = 0; i < n; i++) {
-+        // Work in 16-bit color.
-+        uint32_t pb = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 0]));
-+        uint32_t pg = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 1]));
-+        uint32_t pr = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 2]));
-+        uint32_t pa = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 3]));
-+
-+        // Convert to premultiplied alpha.
-+        if (nonpremul && (pa != 0xFFFF)) {
-+          pb = (pb * pa) / 0xFFFF;
-+          pg = (pg * pa) / 0xFFFF;
-+          pr = (pr * pa) / 0xFFFF;
-+        }
-+
-+        // These deltas are conceptually int32_t (signed) but after squaring,
-+        // it's equivalent to work in uint32_t (unsigned).
-+        pb -= cb;
-+        pg -= cg;
-+        pr -= cr;
-+        pa -= ca;
-+        uint64_t score = ((uint64_t)(pb * pb)) + ((uint64_t)(pg * pg)) +
-+                         ((uint64_t)(pr * pr)) + ((uint64_t)(pa * pa));
-+        if (best_score > score) {
-+          best_score = score;
-+          best_index = i;
-+        }
-+      }
-+      break;
-+    }
-   }
- 
--  return len;
-+  return (uint8_t)best_index;
- }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+// --------
- 
--  while (n >= 1) {
--    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
--    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4), wuffs_base__composite_nonpremul_premul_u32_axxx(d0, s0));
-+static inline uint32_t  //
-+wuffs_private_impl__composite_nonpremul_nonpremul_u32_axxx(
-+    uint32_t dst_nonpremul,
-+    uint32_t src_nonpremul) {
-+  // Extract 16-bit color components.
-+  //
-+  // If the destination is transparent then SRC_OVER is equivalent to SRC: just
-+  // return src_nonpremul. This isn't just an optimization (skipping the rest
-+  // of the function's computation). It also preserves the nonpremul
-+  // distinction between e.g. transparent red and transparent blue that would
-+  // otherwise be lost by converting from nonpremul to premul and back.
-+  uint32_t da = 0x101 * (0xFF & (dst_nonpremul >> 24));
-+  if (da == 0) {
-+    return src_nonpremul;
-+  }
-+  uint32_t dr = 0x101 * (0xFF & (dst_nonpremul >> 16));
-+  uint32_t dg = 0x101 * (0xFF & (dst_nonpremul >> 8));
-+  uint32_t db = 0x101 * (0xFF & (dst_nonpremul >> 0));
-+  uint32_t sa = 0x101 * (0xFF & (src_nonpremul >> 24));
-+  uint32_t sr = 0x101 * (0xFF & (src_nonpremul >> 16));
-+  uint32_t sg = 0x101 * (0xFF & (src_nonpremul >> 8));
-+  uint32_t sb = 0x101 * (0xFF & (src_nonpremul >> 0));
- 
--    s += 1 * 4;
--    d += 1 * 4;
--    n -= 1;
-+  // Convert dst from nonpremul to premul.
-+  dr = (dr * da) / 0xFFFF;
-+  dg = (dg * da) / 0xFFFF;
-+  db = (db * da) / 0xFFFF;
-+
-+  // Calculate the inverse of the src-alpha: how much of the dst to keep.
-+  uint32_t ia = 0xFFFF - sa;
-+
-+  // Composite src (nonpremul) over dst (premul).
-+  da = sa + ((da * ia) / 0xFFFF);
-+  dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
-+  dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
-+  db = ((sb * sa) + (db * ia)) / 0xFFFF;
-+
-+  // Convert dst from premul to nonpremul.
-+  if (da != 0) {
-+    dr = (dr * 0xFFFF) / da;
-+    dg = (dg * 0xFFFF) / da;
-+    db = (db * 0xFFFF) / da;
-   }
- 
--  return len;
-+  // Convert from 16-bit color to 8-bit color.
-+  da >>= 8;
-+  dr >>= 8;
-+  dg >>= 8;
-+  db >>= 8;
-+
-+  // Combine components.
-+  return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
- }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_nonpremul__index_bgra_nonpremul__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  if (dst_palette_len !=
--      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
--    return 0;
-+static inline uint64_t  //
-+wuffs_private_impl__composite_nonpremul_nonpremul_u64_axxx(
-+    uint64_t dst_nonpremul,
-+    uint64_t src_nonpremul) {
-+  // Extract components.
-+  //
-+  // If the destination is transparent then SRC_OVER is equivalent to SRC: just
-+  // return src_nonpremul. This isn't just an optimization (skipping the rest
-+  // of the function's computation). It also preserves the nonpremul
-+  // distinction between e.g. transparent red and transparent blue that would
-+  // otherwise be lost by converting from nonpremul to premul and back.
-+  uint64_t da = 0xFFFF & (dst_nonpremul >> 48);
-+  if (da == 0) {
-+    return src_nonpremul;
-   }
--  size_t dst_len4 = dst_len / 4;
--  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+  uint64_t dr = 0xFFFF & (dst_nonpremul >> 32);
-+  uint64_t dg = 0xFFFF & (dst_nonpremul >> 16);
-+  uint64_t db = 0xFFFF & (dst_nonpremul >> 0);
-+  uint64_t sa = 0xFFFF & (src_nonpremul >> 48);
-+  uint64_t sr = 0xFFFF & (src_nonpremul >> 32);
-+  uint64_t sg = 0xFFFF & (src_nonpremul >> 16);
-+  uint64_t sb = 0xFFFF & (src_nonpremul >> 0);
- 
--  // TODO: unroll.
-+  // Convert dst from nonpremul to premul.
-+  dr = (dr * da) / 0xFFFF;
-+  dg = (dg * da) / 0xFFFF;
-+  db = (db * da) / 0xFFFF;
- 
--  while (n >= 1) {
--    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
--    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
--                                                          ((size_t)s[0] * 4));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4),
--        wuffs_base__composite_nonpremul_nonpremul_u32_axxx(d0, s0));
-+  // Calculate the inverse of the src-alpha: how much of the dst to keep.
-+  uint64_t ia = 0xFFFF - sa;
- 
--    s += 1 * 1;
--    d += 1 * 4;
--    n -= 1;
-+  // Composite src (nonpremul) over dst (premul).
-+  da = sa + ((da * ia) / 0xFFFF);
-+  dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
-+  dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
-+  db = ((sb * sa) + (db * ia)) / 0xFFFF;
-+
-+  // Convert dst from premul to nonpremul.
-+  if (da != 0) {
-+    dr = (dr * 0xFFFF) / da;
-+    dg = (dg * 0xFFFF) / da;
-+    db = (db * 0xFFFF) / da;
-   }
- 
--  return len;
-+  // Combine components.
-+  return (db << 0) | (dg << 16) | (dr << 32) | (da << 48);
- }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_nonpremul__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+static inline uint32_t  //
-+wuffs_private_impl__composite_nonpremul_premul_u32_axxx(uint32_t dst_nonpremul,
-+                                                        uint32_t src_premul) {
-+  // Extract 16-bit color components.
-+  uint32_t da = 0x101 * (0xFF & (dst_nonpremul >> 24));
-+  uint32_t dr = 0x101 * (0xFF & (dst_nonpremul >> 16));
-+  uint32_t dg = 0x101 * (0xFF & (dst_nonpremul >> 8));
-+  uint32_t db = 0x101 * (0xFF & (dst_nonpremul >> 0));
-+  uint32_t sa = 0x101 * (0xFF & (src_premul >> 24));
-+  uint32_t sr = 0x101 * (0xFF & (src_premul >> 16));
-+  uint32_t sg = 0x101 * (0xFF & (src_premul >> 8));
-+  uint32_t sb = 0x101 * (0xFF & (src_premul >> 0));
- 
--  while (n >= 1) {
--    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
--    uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
--        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4),
--        wuffs_base__composite_nonpremul_nonpremul_u32_axxx(d0, s0));
-+  // Convert dst from nonpremul to premul.
-+  dr = (dr * da) / 0xFFFF;
-+  dg = (dg * da) / 0xFFFF;
-+  db = (db * da) / 0xFFFF;
- 
--    s += 1 * 4;
--    d += 1 * 4;
--    n -= 1;
-+  // Calculate the inverse of the src-alpha: how much of the dst to keep.
-+  uint32_t ia = 0xFFFF - sa;
-+
-+  // Composite src (premul) over dst (premul).
-+  da = sa + ((da * ia) / 0xFFFF);
-+  dr = sr + ((dr * ia) / 0xFFFF);
-+  dg = sg + ((dg * ia) / 0xFFFF);
-+  db = sb + ((db * ia) / 0xFFFF);
-+
-+  // Convert dst from premul to nonpremul.
-+  if (da != 0) {
-+    dr = (dr * 0xFFFF) / da;
-+    dg = (dg * 0xFFFF) / da;
-+    db = (db * 0xFFFF) / da;
-   }
- 
--  return len;
-+  // Convert from 16-bit color to 8-bit color.
-+  da >>= 8;
-+  dr >>= 8;
-+  dg >>= 8;
-+  db >>= 8;
-+
-+  // Combine components.
-+  return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
- }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+static inline uint64_t  //
-+wuffs_private_impl__composite_nonpremul_premul_u64_axxx(uint64_t dst_nonpremul,
-+                                                        uint64_t src_premul) {
-+  // Extract components.
-+  uint64_t da = 0xFFFF & (dst_nonpremul >> 48);
-+  uint64_t dr = 0xFFFF & (dst_nonpremul >> 32);
-+  uint64_t dg = 0xFFFF & (dst_nonpremul >> 16);
-+  uint64_t db = 0xFFFF & (dst_nonpremul >> 0);
-+  uint64_t sa = 0xFFFF & (src_premul >> 48);
-+  uint64_t sr = 0xFFFF & (src_premul >> 32);
-+  uint64_t sg = 0xFFFF & (src_premul >> 16);
-+  uint64_t sb = 0xFFFF & (src_premul >> 0);
- 
--  while (n >= 1) {
--    uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
--        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4),
--        wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(s0));
-+  // Convert dst from nonpremul to premul.
-+  dr = (dr * da) / 0xFFFF;
-+  dg = (dg * da) / 0xFFFF;
-+  db = (db * da) / 0xFFFF;
- 
--    s += 1 * 4;
--    d += 1 * 4;
--    n -= 1;
-+  // Calculate the inverse of the src-alpha: how much of the dst to keep.
-+  uint64_t ia = 0xFFFF - sa;
-+
-+  // Composite src (premul) over dst (premul).
-+  da = sa + ((da * ia) / 0xFFFF);
-+  dr = sr + ((dr * ia) / 0xFFFF);
-+  dg = sg + ((dg * ia) / 0xFFFF);
-+  db = sb + ((db * ia) / 0xFFFF);
-+
-+  // Convert dst from premul to nonpremul.
-+  if (da != 0) {
-+    dr = (dr * 0xFFFF) / da;
-+    dg = (dg * 0xFFFF) / da;
-+    db = (db * 0xFFFF) / da;
-   }
- 
--  return len;
-+  // Combine components.
-+  return (db << 0) | (dg << 16) | (dr << 32) | (da << 48);
- }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+static inline uint32_t  //
-+wuffs_private_impl__composite_premul_nonpremul_u32_axxx(
-+    uint32_t dst_premul,
-+    uint32_t src_nonpremul) {
-+  // Extract 16-bit color components.
-+  uint32_t da = 0x101 * (0xFF & (dst_premul >> 24));
-+  uint32_t dr = 0x101 * (0xFF & (dst_premul >> 16));
-+  uint32_t dg = 0x101 * (0xFF & (dst_premul >> 8));
-+  uint32_t db = 0x101 * (0xFF & (dst_premul >> 0));
-+  uint32_t sa = 0x101 * (0xFF & (src_nonpremul >> 24));
-+  uint32_t sr = 0x101 * (0xFF & (src_nonpremul >> 16));
-+  uint32_t sg = 0x101 * (0xFF & (src_nonpremul >> 8));
-+  uint32_t sb = 0x101 * (0xFF & (src_nonpremul >> 0));
- 
--  while (n >= 1) {
--    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
--    uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
--        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4), wuffs_base__composite_nonpremul_premul_u32_axxx(d0, s0));
-+  // Calculate the inverse of the src-alpha: how much of the dst to keep.
-+  uint32_t ia = 0xFFFF - sa;
- 
--    s += 1 * 4;
--    d += 1 * 4;
--    n -= 1;
--  }
-+  // Composite src (nonpremul) over dst (premul).
-+  da = sa + ((da * ia) / 0xFFFF);
-+  dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
-+  dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
-+  db = ((sb * sa) + (db * ia)) / 0xFFFF;
- 
--  return len;
-+  // Convert from 16-bit color to 8-bit color.
-+  da >>= 8;
-+  dr >>= 8;
-+  dg >>= 8;
-+  db >>= 8;
-+
-+  // Combine components.
-+  return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
-+}
-+
-+static inline uint64_t  //
-+wuffs_private_impl__composite_premul_nonpremul_u64_axxx(
-+    uint64_t dst_premul,
-+    uint64_t src_nonpremul) {
-+  // Extract components.
-+  uint64_t da = 0xFFFF & (dst_premul >> 48);
-+  uint64_t dr = 0xFFFF & (dst_premul >> 32);
-+  uint64_t dg = 0xFFFF & (dst_premul >> 16);
-+  uint64_t db = 0xFFFF & (dst_premul >> 0);
-+  uint64_t sa = 0xFFFF & (src_nonpremul >> 48);
-+  uint64_t sr = 0xFFFF & (src_nonpremul >> 32);
-+  uint64_t sg = 0xFFFF & (src_nonpremul >> 16);
-+  uint64_t sb = 0xFFFF & (src_nonpremul >> 0);
-+
-+  // Calculate the inverse of the src-alpha: how much of the dst to keep.
-+  uint64_t ia = 0xFFFF - sa;
-+
-+  // Composite src (nonpremul) over dst (premul).
-+  da = sa + ((da * ia) / 0xFFFF);
-+  dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
-+  dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
-+  db = ((sb * sa) + (db * ia)) / 0xFFFF;
-+
-+  // Combine components.
-+  return (db << 0) | (dg << 16) | (dr << 32) | (da << 48);
-+}
-+
-+static inline uint32_t  //
-+wuffs_private_impl__composite_premul_premul_u32_axxx(uint32_t dst_premul,
-+                                                     uint32_t src_premul) {
-+  // Extract 16-bit color components.
-+  uint32_t da = 0x101 * (0xFF & (dst_premul >> 24));
-+  uint32_t dr = 0x101 * (0xFF & (dst_premul >> 16));
-+  uint32_t dg = 0x101 * (0xFF & (dst_premul >> 8));
-+  uint32_t db = 0x101 * (0xFF & (dst_premul >> 0));
-+  uint32_t sa = 0x101 * (0xFF & (src_premul >> 24));
-+  uint32_t sr = 0x101 * (0xFF & (src_premul >> 16));
-+  uint32_t sg = 0x101 * (0xFF & (src_premul >> 8));
-+  uint32_t sb = 0x101 * (0xFF & (src_premul >> 0));
-+
-+  // Calculate the inverse of the src-alpha: how much of the dst to keep.
-+  uint32_t ia = 0xFFFF - sa;
-+
-+  // Composite src (premul) over dst (premul).
-+  da = sa + ((da * ia) / 0xFFFF);
-+  dr = sr + ((dr * ia) / 0xFFFF);
-+  dg = sg + ((dg * ia) / 0xFFFF);
-+  db = sb + ((db * ia) / 0xFFFF);
-+
-+  // Convert from 16-bit color to 8-bit color.
-+  da >>= 8;
-+  dr >>= 8;
-+  dg >>= 8;
-+  db >>= 8;
-+
-+  // Combine components.
-+  return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
- }
- 
- // --------
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len8 = dst_len / 8;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
-+wuffs_private_impl__swizzle_squash_align4_bgr_565_8888(uint8_t* dst_ptr,
-+                                                       size_t dst_len,
-+                                                       const uint8_t* src_ptr,
-+                                                       size_t src_len,
-+                                                       bool nonpremul) {
-+  size_t len = (dst_len < src_len ? dst_len : src_len) / 4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
- 
-   size_t n = len;
--  while (n >= 1) {
--    uint8_t s0 = s[0];
--    uint8_t s1 = s[1];
--    uint8_t s2 = s[2];
--    uint8_t s3 = s[3];
--    d[0] = s0;
--    d[1] = s0;
--    d[2] = s1;
--    d[3] = s1;
--    d[4] = s2;
--    d[5] = s2;
--    d[6] = s3;
--    d[7] = s3;
--
--    s += 1 * 4;
--    d += 1 * 8;
--    n -= 1;
-+  while (n--) {
-+    uint32_t argb = wuffs_base__peek_u32le__no_bounds_check(s);
-+    if (nonpremul) {
-+      argb =
-+          wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(argb);
-+    }
-+    uint32_t b5 = 0x1F & (argb >> (8 - 5));
-+    uint32_t g6 = 0x3F & (argb >> (16 - 6));
-+    uint32_t r5 = 0x1F & (argb >> (24 - 5));
-+    uint32_t alpha = argb & 0xFF000000;
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d, alpha | (r5 << 11) | (g6 << 5) | (b5 << 0));
-+    s += 4;
-+    d += 4;
-   }
-   return len;
- }
- 
-+// --------
-+
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len8 = dst_len / 8;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
-+wuffs_private_impl__swizzle_swap_rgb_bgr(uint8_t* dst_ptr,
-+                                         size_t dst_len,
-+                                         uint8_t* dst_palette_ptr,
-+                                         size_t dst_palette_len,
-+                                         const uint8_t* src_ptr,
-+                                         size_t src_len) {
-+  size_t len = (dst_len < src_len ? dst_len : src_len) / 3;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
- 
-   size_t n = len;
--  while (n >= 1) {
--    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
--    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
--        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
--    wuffs_base__poke_u64le__no_bounds_check(
--        d + (0 * 8),
--        wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0));
--
--    s += 1 * 4;
--    d += 1 * 8;
--    n -= 1;
-+  while (n--) {
-+    uint8_t s0 = s[0];
-+    uint8_t s1 = s[1];
-+    uint8_t s2 = s[2];
-+    d[0] = s2;
-+    d[1] = s1;
-+    d[2] = s0;
-+    s += 3;
-+    d += 3;
-   }
-   return len;
- }
- 
-+// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul_4x16le__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len8 = dst_len / 8;
--  size_t src_len8 = src_len / 8;
--  size_t len = (dst_len8 < src_len8) ? dst_len8 : src_len8;
-+wuffs_private_impl__swizzle_swap_rgbx_bgrx__x86_sse42(uint8_t* dst_ptr,
-+                                                      size_t dst_len,
-+                                                      uint8_t* dst_palette_ptr,
-+                                                      size_t dst_palette_len,
-+                                                      const uint8_t* src_ptr,
-+                                                      size_t src_len) {
-+  size_t len = (dst_len < src_len ? dst_len : src_len) / 4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
--
-   size_t n = len;
--  while (n >= 1) {
--    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
--    uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
--    wuffs_base__poke_u64le__no_bounds_check(
--        d + (0 * 8),
--        wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0));
- 
--    s += 1 * 8;
--    d += 1 * 8;
--    n -= 1;
-+  __m128i shuffle = _mm_set_epi8(+0x0F, +0x0C, +0x0D, +0x0E,  //
-+                                 +0x0B, +0x08, +0x09, +0x0A,  //
-+                                 +0x07, +0x04, +0x05, +0x06,  //
-+                                 +0x03, +0x00, +0x01, +0x02);
-+
-+  while (n >= 4) {
-+    __m128i x;
-+    x = _mm_lddqu_si128((const __m128i*)(const void*)s);
-+    x = _mm_shuffle_epi8(x, shuffle);
-+    _mm_storeu_si128((__m128i*)(void*)d, x);
-+
-+    s += 4 * 4;
-+    d += 4 * 4;
-+    n -= 4;
-+  }
-+
-+  while (n--) {
-+    uint8_t s0 = s[0];
-+    uint8_t s1 = s[1];
-+    uint8_t s2 = s[2];
-+    uint8_t s3 = s[3];
-+    d[0] = s2;
-+    d[1] = s1;
-+    d[2] = s0;
-+    d[3] = s3;
-+    s += 4;
-+    d += 4;
-   }
-   return len;
- }
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len8 = dst_len / 8;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
-+wuffs_private_impl__swizzle_swap_rgbx_bgrx(uint8_t* dst_ptr,
-+                                           size_t dst_len,
-+                                           uint8_t* dst_palette_ptr,
-+                                           size_t dst_palette_len,
-+                                           const uint8_t* src_ptr,
-+                                           size_t src_len) {
-+  size_t len = (dst_len < src_len ? dst_len : src_len) / 4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
- 
-   size_t n = len;
--  while (n >= 1) {
--    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
--        wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
--            wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
--    wuffs_base__poke_u64le__no_bounds_check(d + (0 * 8), s0);
--
--    s += 1 * 4;
--    d += 1 * 8;
--    n -= 1;
-+  while (n--) {
-+    uint8_t s0 = s[0];
-+    uint8_t s1 = s[1];
-+    uint8_t s2 = s[2];
-+    uint8_t s3 = s[3];
-+    d[0] = s2;
-+    d[1] = s1;
-+    d[2] = s0;
-+    d[3] = s3;
-+    s += 4;
-+    d += 4;
-   }
-   return len;
- }
- 
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len8 = dst_len / 8;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--
--  size_t n = len;
--  while (n >= 1) {
--    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
--    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
--        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
--    wuffs_base__poke_u64le__no_bounds_check(
--        d + (0 * 8), wuffs_base__composite_nonpremul_premul_u64_axxx(d0, s0));
-+// --------
- 
--    s += 1 * 4;
--    d += 1 * 8;
--    n -= 1;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_copy_1_1(uint8_t* dst_ptr,
-+                                     size_t dst_len,
-+                                     uint8_t* dst_palette_ptr,
-+                                     size_t dst_palette_len,
-+                                     const uint8_t* src_ptr,
-+                                     size_t src_len) {
-+  size_t len = (dst_len < src_len) ? dst_len : src_len;
-+  if (len > 0) {
-+    memmove(dst_ptr, src_ptr, len);
-   }
-   return len;
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__index_bgra_nonpremul__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  if (dst_palette_len !=
--      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
--    return 0;
-+wuffs_private_impl__swizzle_copy_2_2(uint8_t* dst_ptr,
-+                                     size_t dst_len,
-+                                     uint8_t* dst_palette_ptr,
-+                                     size_t dst_palette_len,
-+                                     const uint8_t* src_ptr,
-+                                     size_t src_len) {
-+  size_t dst_len2 = dst_len / 2;
-+  size_t src_len2 = src_len / 2;
-+  size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2;
-+  if (len > 0) {
-+    memmove(dst_ptr, src_ptr, len * 2);
-   }
--  size_t dst_len8 = dst_len / 8;
--  size_t len = (dst_len8 < src_len) ? dst_len8 : src_len;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
--
--  while (n >= 1) {
--    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
--    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
--        wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
--                                                ((size_t)s[0] * 4)));
--    wuffs_base__poke_u64le__no_bounds_check(
--        d + (0 * 8),
--        wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0));
-+  return len;
-+}
- 
--    s += 1 * 1;
--    d += 1 * 8;
--    n -= 1;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_copy_3_3(uint8_t* dst_ptr,
-+                                     size_t dst_len,
-+                                     uint8_t* dst_palette_ptr,
-+                                     size_t dst_palette_len,
-+                                     const uint8_t* src_ptr,
-+                                     size_t src_len) {
-+  size_t dst_len3 = dst_len / 3;
-+  size_t src_len3 = src_len / 3;
-+  size_t len = (dst_len3 < src_len3) ? dst_len3 : src_len3;
-+  if (len > 0) {
-+    memmove(dst_ptr, src_ptr, len * 3);
-   }
--
-   return len;
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len8 = dst_len / 8;
-+wuffs_private_impl__swizzle_copy_4_4(uint8_t* dst_ptr,
-+                                     size_t dst_len,
-+                                     uint8_t* dst_palette_ptr,
-+                                     size_t dst_palette_len,
-+                                     const uint8_t* src_ptr,
-+                                     size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-   size_t src_len4 = src_len / 4;
--  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--
--  size_t n = len;
--  while (n >= 1) {
--    uint8_t s0 = s[0];
--    uint8_t s1 = s[1];
--    uint8_t s2 = s[2];
--    uint8_t s3 = s[3];
--    d[0] = s2;
--    d[1] = s2;
--    d[2] = s1;
--    d[3] = s1;
--    d[4] = s0;
--    d[5] = s0;
--    d[6] = s3;
--    d[7] = s3;
--
--    s += 1 * 4;
--    d += 1 * 8;
--    n -= 1;
-+  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-+  if (len > 0) {
-+    memmove(dst_ptr, src_ptr, len * 4);
-   }
-   return len;
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
-+wuffs_private_impl__swizzle_copy_8_8(uint8_t* dst_ptr,
-+                                     size_t dst_len,
-+                                     uint8_t* dst_palette_ptr,
-+                                     size_t dst_palette_len,
-+                                     const uint8_t* src_ptr,
-+                                     size_t src_len) {
-   size_t dst_len8 = dst_len / 8;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--
--  size_t n = len;
--  while (n >= 1) {
--    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
--    uint64_t s0 =
--        wuffs_base__color_u32__as__color_u64(wuffs_base__swap_u32_argb_abgr(
--            wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
--    wuffs_base__poke_u64le__no_bounds_check(
--        d + (0 * 8),
--        wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0));
--
--    s += 1 * 4;
--    d += 1 * 8;
--    n -= 1;
-+  size_t src_len8 = src_len / 8;
-+  size_t len = (dst_len8 < src_len8) ? dst_len8 : src_len8;
-+  if (len > 0) {
-+    memmove(dst_ptr, src_ptr, len * 8);
-   }
-   return len;
- }
- 
-+// --------
-+
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len8 = dst_len / 8;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
-+wuffs_private_impl__swizzle_bgr_565__bgr(uint8_t* dst_ptr,
-+                                         size_t dst_len,
-+                                         uint8_t* dst_palette_ptr,
-+                                         size_t dst_palette_len,
-+                                         const uint8_t* src_ptr,
-+                                         size_t src_len) {
-+  size_t dst_len2 = dst_len / 2;
-+  size_t src_len3 = src_len / 3;
-+  size_t len = (dst_len2 < src_len3) ? dst_len2 : src_len3;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
--
-   size_t n = len;
-+
-+  // TODO: unroll.
-+
-   while (n >= 1) {
--    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
--        wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
--            wuffs_base__swap_u32_argb_abgr(
--                wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))));
--    wuffs_base__poke_u64le__no_bounds_check(d + (0 * 8), s0);
-+    uint32_t b5 = (uint32_t)(s[0] >> 3);
-+    uint32_t g6 = (uint32_t)(s[1] >> 2);
-+    uint32_t r5 = (uint32_t)(s[2] >> 3);
-+    uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0);
-+    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
- 
--    s += 1 * 4;
--    d += 1 * 8;
-+    s += 1 * 3;
-+    d += 1 * 2;
-     n -= 1;
-   }
-+
-   return len;
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len8 = dst_len / 8;
-+wuffs_private_impl__swizzle_bgr_565__bgrx(uint8_t* dst_ptr,
-+                                          size_t dst_len,
-+                                          uint8_t* dst_palette_ptr,
-+                                          size_t dst_palette_len,
-+                                          const uint8_t* src_ptr,
-+                                          size_t src_len) {
-+  size_t dst_len2 = dst_len / 2;
-   size_t src_len4 = src_len / 4;
--  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
-+  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
--
-   size_t n = len;
-+
-+  // TODO: unroll.
-+
-   while (n >= 1) {
--    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
--    uint64_t s0 =
--        wuffs_base__color_u32__as__color_u64(wuffs_base__swap_u32_argb_abgr(
--            wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
--    wuffs_base__poke_u64le__no_bounds_check(
--        d + (0 * 8), wuffs_base__composite_nonpremul_premul_u64_axxx(d0, s0));
-+    uint32_t b5 = (uint32_t)(s[0] >> 3);
-+    uint32_t g6 = (uint32_t)(s[1] >> 2);
-+    uint32_t r5 = (uint32_t)(s[2] >> 3);
-+    uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0);
-+    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
- 
-     s += 1 * 4;
--    d += 1 * 8;
-+    d += 1 * 2;
-     n -= 1;
-   }
-+
-   return len;
- }
- 
--// --------
--
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src(
-+wuffs_private_impl__swizzle_bgr_565__bgra_nonpremul__src(
-     uint8_t* dst_ptr,
-     size_t dst_len,
-     uint8_t* dst_palette_ptr,
-     size_t dst_palette_len,
-     const uint8_t* src_ptr,
-     size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
-+  size_t dst_len2 = dst_len / 2;
-   size_t src_len4 = src_len / 4;
--  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-+  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
-@@ -22217,13 +23221,14 @@ wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src(
-   // TODO: unroll.
- 
-   while (n >= 1) {
--    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4),
--        wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(s0));
-+    wuffs_base__poke_u16le__no_bounds_check(
-+        d + (0 * 2),
-+        wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
-+            wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
-+                wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))));
- 
-     s += 1 * 4;
--    d += 1 * 4;
-+    d += 1 * 2;
-     n -= 1;
-   }
- 
-@@ -22231,16 +23236,16 @@ wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src(
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src(
-+wuffs_private_impl__swizzle_bgr_565__bgra_nonpremul_4x16le__src(
-     uint8_t* dst_ptr,
-     size_t dst_len,
-     uint8_t* dst_palette_ptr,
-     size_t dst_palette_len,
-     const uint8_t* src_ptr,
-     size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
-+  size_t dst_len2 = dst_len / 2;
-   size_t src_len8 = src_len / 8;
--  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
-+  size_t len = (dst_len2 < src_len8) ? dst_len2 : src_len8;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
-@@ -22248,13 +23253,14 @@ wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src(
-   // TODO: unroll.
- 
-   while (n >= 1) {
--    uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4),
--        wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(s0));
-+    wuffs_base__poke_u16le__no_bounds_check(
-+        d + (0 * 2),
-+        wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
-+            wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
-+                wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)))));
- 
-     s += 1 * 8;
--    d += 1 * 4;
-+    d += 1 * 2;
-     n -= 1;
-   }
- 
-@@ -22262,16 +23268,16 @@ wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src(
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over(
-+wuffs_private_impl__swizzle_bgr_565__bgra_nonpremul__src_over(
-     uint8_t* dst_ptr,
-     size_t dst_len,
-     uint8_t* dst_palette_ptr,
-     size_t dst_palette_len,
-     const uint8_t* src_ptr,
-     size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
-+  size_t dst_len2 = dst_len / 2;
-   size_t src_len4 = src_len / 4;
--  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-+  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
-@@ -22279,13 +23285,38 @@ wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over(
-   // TODO: unroll.
- 
-   while (n >= 1) {
--    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
--    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4), wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0));
-+    // Extract 16-bit color components.
-+    uint32_t sa = 0x101 * ((uint32_t)s[3]);
-+    uint32_t sr = 0x101 * ((uint32_t)s[2]);
-+    uint32_t sg = 0x101 * ((uint32_t)s[1]);
-+    uint32_t sb = 0x101 * ((uint32_t)s[0]);
-+
-+    // Convert from 565 color to 16-bit color.
-+    uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
-+    uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
-+    uint32_t dr = (0x8421 * old_r5) >> 4;
-+    uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
-+    uint32_t dg = (0x1041 * old_g6) >> 2;
-+    uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
-+    uint32_t db = (0x8421 * old_b5) >> 4;
-+
-+    // Calculate the inverse of the src-alpha: how much of the dst to keep.
-+    uint32_t ia = 0xFFFF - sa;
-+
-+    // Composite src (nonpremul) over dst (premul).
-+    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
-+    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
-+    db = ((sb * sa) + (db * ia)) / 0xFFFF;
-+
-+    // Convert from 16-bit color to 565 color and combine the components.
-+    uint32_t new_r5 = 0x1F & (dr >> 11);
-+    uint32_t new_g6 = 0x3F & (dg >> 10);
-+    uint32_t new_b5 = 0x1F & (db >> 11);
-+    uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
-+    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
- 
-     s += 1 * 4;
--    d += 1 * 4;
-+    d += 1 * 2;
-     n -= 1;
-   }
- 
-@@ -22293,16 +23324,16 @@ wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over(
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src_over(
-+wuffs_private_impl__swizzle_bgr_565__bgra_nonpremul_4x16le__src_over(
-     uint8_t* dst_ptr,
-     size_t dst_len,
-     uint8_t* dst_palette_ptr,
-     size_t dst_palette_len,
-     const uint8_t* src_ptr,
-     size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
-+  size_t dst_len2 = dst_len / 2;
-   size_t src_len8 = src_len / 8;
--  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
-+  size_t len = (dst_len2 < src_len8) ? dst_len2 : src_len8;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
-@@ -22310,16 +23341,38 @@ wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src_over(
-   // TODO: unroll.
- 
-   while (n >= 1) {
--    uint64_t d0 = wuffs_base__color_u32__as__color_u64(
--        wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)));
--    uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4),
--        wuffs_base__color_u64__as__color_u32(
--            wuffs_base__composite_premul_nonpremul_u64_axxx(d0, s0)));
-+    // Extract 16-bit color components.
-+    uint32_t sa = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 6));
-+    uint32_t sr = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 4));
-+    uint32_t sg = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 2));
-+    uint32_t sb = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 0));
-+
-+    // Convert from 565 color to 16-bit color.
-+    uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
-+    uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
-+    uint32_t dr = (0x8421 * old_r5) >> 4;
-+    uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
-+    uint32_t dg = (0x1041 * old_g6) >> 2;
-+    uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
-+    uint32_t db = (0x8421 * old_b5) >> 4;
-+
-+    // Calculate the inverse of the src-alpha: how much of the dst to keep.
-+    uint32_t ia = 0xFFFF - sa;
-+
-+    // Composite src (nonpremul) over dst (premul).
-+    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
-+    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
-+    db = ((sb * sa) + (db * ia)) / 0xFFFF;
-+
-+    // Convert from 16-bit color to 565 color and combine the components.
-+    uint32_t new_r5 = 0x1F & (dr >> 11);
-+    uint32_t new_g6 = 0x3F & (dg >> 10);
-+    uint32_t new_b5 = 0x1F & (db >> 11);
-+    uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
-+    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
- 
-     s += 1 * 8;
--    d += 1 * 4;
-+    d += 1 * 2;
-     n -= 1;
-   }
- 
-@@ -22327,16 +23380,15 @@ wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src_over(
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
-+wuffs_private_impl__swizzle_bgr_565__bgra_premul__src(uint8_t* dst_ptr,
-+                                                      size_t dst_len,
-+                                                      uint8_t* dst_palette_ptr,
-+                                                      size_t dst_palette_len,
-+                                                      const uint8_t* src_ptr,
-+                                                      size_t src_len) {
-+  size_t dst_len2 = dst_len / 2;
-   size_t src_len4 = src_len / 4;
--  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-+  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
-@@ -22344,13 +23396,12 @@ wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over(
-   // TODO: unroll.
- 
-   while (n >= 1) {
--    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
--    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4), wuffs_base__composite_premul_premul_u32_axxx(d0, s0));
-+    wuffs_base__poke_u16le__no_bounds_check(
-+        d + (0 * 2), wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
-+                         wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
- 
-     s += 1 * 4;
--    d += 1 * 4;
-+    d += 1 * 2;
-     n -= 1;
-   }
- 
-@@ -22358,19 +23409,16 @@ wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over(
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_premul__index_bgra_nonpremul__src_over(
-+wuffs_private_impl__swizzle_bgr_565__bgra_premul__src_over(
-     uint8_t* dst_ptr,
-     size_t dst_len,
-     uint8_t* dst_palette_ptr,
-     size_t dst_palette_len,
-     const uint8_t* src_ptr,
-     size_t src_len) {
--  if (dst_palette_len !=
--      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
--    return 0;
--  }
--  size_t dst_len4 = dst_len / 4;
--  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
-+  size_t dst_len2 = dst_len / 2;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
-@@ -22378,14 +23426,38 @@ wuffs_base__pixel_swizzler__bgra_premul__index_bgra_nonpremul__src_over(
-   // TODO: unroll.
- 
-   while (n >= 1) {
--    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
--    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
--                                                          ((size_t)s[0] * 4));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4), wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0));
-+    // Extract 16-bit color components.
-+    uint32_t sa = 0x101 * ((uint32_t)s[3]);
-+    uint32_t sr = 0x101 * ((uint32_t)s[2]);
-+    uint32_t sg = 0x101 * ((uint32_t)s[1]);
-+    uint32_t sb = 0x101 * ((uint32_t)s[0]);
- 
--    s += 1 * 1;
--    d += 1 * 4;
-+    // Convert from 565 color to 16-bit color.
-+    uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
-+    uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
-+    uint32_t dr = (0x8421 * old_r5) >> 4;
-+    uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
-+    uint32_t dg = (0x1041 * old_g6) >> 2;
-+    uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
-+    uint32_t db = (0x8421 * old_b5) >> 4;
-+
-+    // Calculate the inverse of the src-alpha: how much of the dst to keep.
-+    uint32_t ia = 0xFFFF - sa;
-+
-+    // Composite src (premul) over dst (premul).
-+    dr = sr + ((dr * ia) / 0xFFFF);
-+    dg = sg + ((dg * ia) / 0xFFFF);
-+    db = sb + ((db * ia) / 0xFFFF);
-+
-+    // Convert from 16-bit color to 565 color and combine the components.
-+    uint32_t new_r5 = 0x1F & (dr >> 11);
-+    uint32_t new_g6 = 0x3F & (dg >> 10);
-+    uint32_t new_b5 = 0x1F & (db >> 11);
-+    uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
-+    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
-+
-+    s += 1 * 4;
-+    d += 1 * 2;
-     n -= 1;
-   }
- 
-@@ -22393,16 +23465,15 @@ wuffs_base__pixel_swizzler__bgra_premul__index_bgra_nonpremul__src_over(
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-+wuffs_private_impl__swizzle_bgr_565__rgb(uint8_t* dst_ptr,
-+                                         size_t dst_len,
-+                                         uint8_t* dst_palette_ptr,
-+                                         size_t dst_palette_len,
-+                                         const uint8_t* src_ptr,
-+                                         size_t src_len) {
-+  size_t dst_len2 = dst_len / 2;
-+  size_t src_len3 = src_len / 3;
-+  size_t len = (dst_len2 < src_len3) ? dst_len2 : src_len3;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
-@@ -22410,14 +23481,14 @@ wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src(
-   // TODO: unroll.
- 
-   while (n >= 1) {
--    uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
--        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4),
--        wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(s0));
-+    uint32_t r5 = (uint32_t)(s[0] >> 3);
-+    uint32_t g6 = (uint32_t)(s[1] >> 2);
-+    uint32_t b5 = (uint32_t)(s[2] >> 3);
-+    uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0);
-+    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
- 
--    s += 1 * 4;
--    d += 1 * 4;
-+    s += 1 * 3;
-+    d += 1 * 2;
-     n -= 1;
-   }
- 
-@@ -22425,16 +23496,16 @@ wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src(
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over(
-+wuffs_private_impl__swizzle_bgr_565__rgba_nonpremul__src(
-     uint8_t* dst_ptr,
-     size_t dst_len,
-     uint8_t* dst_palette_ptr,
-     size_t dst_palette_len,
-     const uint8_t* src_ptr,
-     size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
-+  size_t dst_len2 = dst_len / 2;
-   size_t src_len4 = src_len / 4;
--  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-+  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
-@@ -22442,14 +23513,15 @@ wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over(
-   // TODO: unroll.
- 
-   while (n >= 1) {
--    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
--    uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
--        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4), wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0));
-+    wuffs_base__poke_u16le__no_bounds_check(
-+        d + (0 * 2),
-+        wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
-+            wuffs_private_impl__swap_u32_argb_abgr(
-+                wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
-+                    wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))))));
- 
-     s += 1 * 4;
--    d += 1 * 4;
-+    d += 1 * 2;
-     n -= 1;
-   }
- 
-@@ -22457,16 +23529,16 @@ wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over(
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src(
-+wuffs_private_impl__swizzle_bgr_565__rgba_nonpremul__src_over(
-     uint8_t* dst_ptr,
-     size_t dst_len,
-     uint8_t* dst_palette_ptr,
-     size_t dst_palette_len,
-     const uint8_t* src_ptr,
-     size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
--  size_t src_len8 = src_len / 8;
--  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
-+  size_t dst_len2 = dst_len / 2;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
-@@ -22474,32 +23546,54 @@ wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src(
-   // TODO: unroll.
- 
-   while (n >= 1) {
--    uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4),
--        wuffs_base__swap_u32_argb_abgr(
--            wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
--                s0)));
--
--    s += 1 * 8;
--    d += 1 * 4;
--    n -= 1;
-+    // Extract 16-bit color components.
-+    uint32_t sa = 0x101 * ((uint32_t)s[3]);
-+    uint32_t sb = 0x101 * ((uint32_t)s[2]);
-+    uint32_t sg = 0x101 * ((uint32_t)s[1]);
-+    uint32_t sr = 0x101 * ((uint32_t)s[0]);
-+
-+    // Convert from 565 color to 16-bit color.
-+    uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
-+    uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
-+    uint32_t dr = (0x8421 * old_r5) >> 4;
-+    uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
-+    uint32_t dg = (0x1041 * old_g6) >> 2;
-+    uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
-+    uint32_t db = (0x8421 * old_b5) >> 4;
-+
-+    // Calculate the inverse of the src-alpha: how much of the dst to keep.
-+    uint32_t ia = 0xFFFF - sa;
-+
-+    // Composite src (nonpremul) over dst (premul).
-+    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
-+    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
-+    db = ((sb * sa) + (db * ia)) / 0xFFFF;
-+
-+    // Convert from 16-bit color to 565 color and combine the components.
-+    uint32_t new_r5 = 0x1F & (dr >> 11);
-+    uint32_t new_g6 = 0x3F & (dg >> 10);
-+    uint32_t new_b5 = 0x1F & (db >> 11);
-+    uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
-+    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
-+
-+    s += 1 * 4;
-+    d += 1 * 2;
-+    n -= 1;
-   }
- 
-   return len;
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src_over(
--    uint8_t* dst_ptr,
--    size_t dst_len,
--    uint8_t* dst_palette_ptr,
--    size_t dst_palette_len,
--    const uint8_t* src_ptr,
--    size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
--  size_t src_len8 = src_len / 8;
--  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
-+wuffs_private_impl__swizzle_bgr_565__rgba_premul__src(uint8_t* dst_ptr,
-+                                                      size_t dst_len,
-+                                                      uint8_t* dst_palette_ptr,
-+                                                      size_t dst_palette_len,
-+                                                      const uint8_t* src_ptr,
-+                                                      size_t src_len) {
-+  size_t dst_len2 = dst_len / 2;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
-@@ -22507,17 +23601,14 @@ wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src_over(
-   // TODO: unroll.
- 
-   while (n >= 1) {
--    uint64_t d0 = wuffs_base__color_u32__as__color_u64(
--        wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)));
--    uint64_t s0 = wuffs_base__swap_u64_argb_abgr(
--        wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4),
--        wuffs_base__color_u64__as__color_u32(
--            wuffs_base__composite_premul_nonpremul_u64_axxx(d0, s0)));
-+    wuffs_base__poke_u16le__no_bounds_check(
-+        d + (0 * 2),
-+        wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
-+            wuffs_private_impl__swap_u32_argb_abgr(
-+                wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))));
- 
--    s += 1 * 8;
--    d += 1 * 4;
-+    s += 1 * 4;
-+    d += 1 * 2;
-     n -= 1;
-   }
- 
-@@ -22525,47 +23616,70 @@ wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src_over(
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgra_premul__rgba_premul__src_over(
-+wuffs_private_impl__swizzle_bgr_565__rgba_premul__src_over(
-     uint8_t* dst_ptr,
-     size_t dst_len,
-     uint8_t* dst_palette_ptr,
-     size_t dst_palette_len,
-     const uint8_t* src_ptr,
-     size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
-+  size_t dst_len2 = dst_len / 2;
-   size_t src_len4 = src_len / 4;
--  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-+  size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
- 
-+  // TODO: unroll.
-+
-   while (n >= 1) {
--    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
--    uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
--        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4), wuffs_base__composite_premul_premul_u32_axxx(d0, s0));
-+    // Extract 16-bit color components.
-+    uint32_t sa = 0x101 * ((uint32_t)s[3]);
-+    uint32_t sb = 0x101 * ((uint32_t)s[2]);
-+    uint32_t sg = 0x101 * ((uint32_t)s[1]);
-+    uint32_t sr = 0x101 * ((uint32_t)s[0]);
-+
-+    // Convert from 565 color to 16-bit color.
-+    uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
-+    uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
-+    uint32_t dr = (0x8421 * old_r5) >> 4;
-+    uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
-+    uint32_t dg = (0x1041 * old_g6) >> 2;
-+    uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
-+    uint32_t db = (0x8421 * old_b5) >> 4;
-+
-+    // Calculate the inverse of the src-alpha: how much of the dst to keep.
-+    uint32_t ia = 0xFFFF - sa;
-+
-+    // Composite src (premul) over dst (premul).
-+    dr = sr + ((dr * ia) / 0xFFFF);
-+    dg = sg + ((dg * ia) / 0xFFFF);
-+    db = sb + ((db * ia) / 0xFFFF);
-+
-+    // Convert from 16-bit color to 565 color and combine the components.
-+    uint32_t new_r5 = 0x1F & (dr >> 11);
-+    uint32_t new_g6 = 0x3F & (dg >> 10);
-+    uint32_t new_b5 = 0x1F & (db >> 11);
-+    uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
-+    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
- 
-     s += 1 * 4;
--    d += 1 * 4;
-+    d += 1 * 2;
-     n -= 1;
-   }
- 
-   return len;
- }
- 
--// --------
--
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgrw__bgr(uint8_t* dst_ptr,
--                                      size_t dst_len,
--                                      uint8_t* dst_palette_ptr,
--                                      size_t dst_palette_len,
--                                      const uint8_t* src_ptr,
--                                      size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
--  size_t src_len3 = src_len / 3;
--  size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3;
-+wuffs_private_impl__swizzle_bgr_565__y(uint8_t* dst_ptr,
-+                                       size_t dst_len,
-+                                       uint8_t* dst_palette_ptr,
-+                                       size_t dst_palette_len,
-+                                       const uint8_t* src_ptr,
-+                                       size_t src_len) {
-+  size_t dst_len2 = dst_len / 2;
-+  size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
-@@ -22573,12 +23687,13 @@ wuffs_base__pixel_swizzler__bgrw__bgr(uint8_t* dst_ptr,
-   // TODO: unroll.
- 
-   while (n >= 1) {
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4),
--        0xFF000000 | wuffs_base__peek_u24le__no_bounds_check(s + (0 * 3)));
-+    uint32_t y5 = (uint32_t)(s[0] >> 3);
-+    uint32_t y6 = (uint32_t)(s[0] >> 2);
-+    uint32_t rgb_565 = (y5 << 11) | (y6 << 5) | (y5 << 0);
-+    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
- 
--    s += 1 * 3;
--    d += 1 * 4;
-+    s += 1 * 1;
-+    d += 1 * 2;
-     n -= 1;
-   }
- 
-@@ -22586,15 +23701,15 @@ wuffs_base__pixel_swizzler__bgrw__bgr(uint8_t* dst_ptr,
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgrw__bgr_565(uint8_t* dst_ptr,
--                                          size_t dst_len,
--                                          uint8_t* dst_palette_ptr,
--                                          size_t dst_palette_len,
--                                          const uint8_t* src_ptr,
--                                          size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
-+wuffs_private_impl__swizzle_bgr_565__y_16be(uint8_t* dst_ptr,
-+                                            size_t dst_len,
-+                                            uint8_t* dst_palette_ptr,
-+                                            size_t dst_palette_len,
-+                                            const uint8_t* src_ptr,
-+                                            size_t src_len) {
-+  size_t dst_len2 = dst_len / 2;
-   size_t src_len2 = src_len / 2;
--  size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
-+  size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
-@@ -22602,12 +23717,13 @@ wuffs_base__pixel_swizzler__bgrw__bgr_565(uint8_t* dst_ptr,
-   // TODO: unroll.
- 
-   while (n >= 1) {
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4), wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
--                         wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2))));
-+    uint32_t y5 = (uint32_t)(s[0] >> 3);
-+    uint32_t y6 = (uint32_t)(s[0] >> 2);
-+    uint32_t rgb_565 = (y5 << 11) | (y6 << 5) | (y5 << 0);
-+    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
- 
-     s += 1 * 2;
--    d += 1 * 4;
-+    d += 1 * 2;
-     n -= 1;
-   }
- 
-@@ -22615,15 +23731,15 @@ wuffs_base__pixel_swizzler__bgrw__bgr_565(uint8_t* dst_ptr,
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgrw__bgrx(uint8_t* dst_ptr,
--                                       size_t dst_len,
--                                       uint8_t* dst_palette_ptr,
--                                       size_t dst_palette_len,
--                                       const uint8_t* src_ptr,
--                                       size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-+wuffs_private_impl__swizzle_bgr_565__ya_nonpremul__src(uint8_t* dst_ptr,
-+                                                       size_t dst_len,
-+                                                       uint8_t* dst_palette_ptr,
-+                                                       size_t dst_palette_len,
-+                                                       const uint8_t* src_ptr,
-+                                                       size_t src_len) {
-+  size_t dst_len2 = dst_len / 2;
-+  size_t src_len2 = src_len / 2;
-+  size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
-@@ -22631,100 +23747,121 @@ wuffs_base__pixel_swizzler__bgrw__bgrx(uint8_t* dst_ptr,
-   // TODO: unroll.
- 
-   while (n >= 1) {
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4),
--        0xFF000000 | wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
-+    uint32_t s0 = ((uint32_t)(s[1]) << 24) | ((uint32_t)(s[0]) * 0x010101);
- 
--    s += 1 * 4;
--    d += 1 * 4;
-+    wuffs_base__poke_u16le__no_bounds_check(
-+        d + (0 * 2),
-+        wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
-+            wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
-+                s0)));
-+
-+    s += 1 * 2;
-+    d += 1 * 2;
-     n -= 1;
-   }
- 
-   return len;
- }
- 
--// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgrw__rgb__x86_sse42(uint8_t* dst_ptr,
--                                                 size_t dst_len,
--                                                 uint8_t* dst_palette_ptr,
--                                                 size_t dst_palette_len,
--                                                 const uint8_t* src_ptr,
--                                                 size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
--  size_t src_len3 = src_len / 3;
--  size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3;
-+wuffs_private_impl__swizzle_bgr_565__ya_nonpremul__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len2 = dst_len / 2;
-+  size_t src_len2 = src_len / 2;
-+  size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
- 
--  __m128i shuffle = _mm_set_epi8(+0x00, +0x09, +0x0A, +0x0B,  //
--                                 +0x00, +0x06, +0x07, +0x08,  //
--                                 +0x00, +0x03, +0x04, +0x05,  //
--                                 +0x00, +0x00, +0x01, +0x02);
--  __m128i or_ff = _mm_set_epi8(-0x01, +0x00, +0x00, +0x00,  //
--                               -0x01, +0x00, +0x00, +0x00,  //
--                               -0x01, +0x00, +0x00, +0x00,  //
--                               -0x01, +0x00, +0x00, +0x00);
-+  // TODO: unroll.
- 
--  while (n >= 6) {
--    __m128i x;
--    x = _mm_lddqu_si128((const __m128i*)(const void*)s);
--    x = _mm_shuffle_epi8(x, shuffle);
--    x = _mm_or_si128(x, or_ff);
--    _mm_storeu_si128((__m128i*)(void*)d, x);
-+  while (n >= 1) {
-+    // Extract 16-bit color components.
-+    uint32_t sa = 0x101 * ((uint32_t)s[1]);
-+    uint32_t sy = 0x101 * ((uint32_t)s[0]);
- 
--    s += 4 * 3;
--    d += 4 * 4;
--    n -= 4;
--  }
-+    // Convert from 565 color to 16-bit color.
-+    uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
-+    uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
-+    uint32_t dr = (0x8421 * old_r5) >> 4;
-+    uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
-+    uint32_t dg = (0x1041 * old_g6) >> 2;
-+    uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
-+    uint32_t db = (0x8421 * old_b5) >> 4;
- 
--  while (n >= 1) {
--    uint8_t b0 = s[0];
--    uint8_t b1 = s[1];
--    uint8_t b2 = s[2];
--    d[0] = b2;
--    d[1] = b1;
--    d[2] = b0;
--    d[3] = 0xFF;
-+    // Calculate the inverse of the src-alpha: how much of the dst to keep.
-+    uint32_t ia = 0xFFFF - sa;
- 
--    s += 1 * 3;
--    d += 1 * 4;
-+    // Composite src (nonpremul) over dst (premul).
-+    dr = ((sy * sa) + (dr * ia)) / 0xFFFF;
-+    dg = ((sy * sa) + (dg * ia)) / 0xFFFF;
-+    db = ((sy * sa) + (db * ia)) / 0xFFFF;
-+
-+    // Convert from 16-bit color to 565 color and combine the components.
-+    uint32_t new_r5 = 0x1F & (dr >> 11);
-+    uint32_t new_g6 = 0x3F & (dg >> 10);
-+    uint32_t new_b5 = 0x1F & (db >> 11);
-+    uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
-+    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
-+
-+    s += 1 * 2;
-+    d += 1 * 2;
-     n -= 1;
-   }
- 
-   return len;
- }
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgrw__rgb(uint8_t* dst_ptr,
--                                      size_t dst_len,
--                                      uint8_t* dst_palette_ptr,
--                                      size_t dst_palette_len,
--                                      const uint8_t* src_ptr,
--                                      size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
--  size_t src_len3 = src_len / 3;
--  size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3;
-+wuffs_private_impl__swizzle_bgr_565__index__src(uint8_t* dst_ptr,
-+                                                size_t dst_len,
-+                                                uint8_t* dst_palette_ptr,
-+                                                size_t dst_palette_len,
-+                                                const uint8_t* src_ptr,
-+                                                size_t src_len) {
-+  if (dst_palette_len !=
-+      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-+    return 0;
-+  }
-+  size_t dst_len2 = dst_len / 2;
-+  size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
- 
-+  const size_t loop_unroll_count = 4;
-+
-+  while (n >= loop_unroll_count) {
-+    wuffs_base__poke_u16le__no_bounds_check(
-+        d + (0 * 2), wuffs_base__peek_u16le__no_bounds_check(
-+                         dst_palette_ptr + ((size_t)s[0] * 4)));
-+    wuffs_base__poke_u16le__no_bounds_check(
-+        d + (1 * 2), wuffs_base__peek_u16le__no_bounds_check(
-+                         dst_palette_ptr + ((size_t)s[1] * 4)));
-+    wuffs_base__poke_u16le__no_bounds_check(
-+        d + (2 * 2), wuffs_base__peek_u16le__no_bounds_check(
-+                         dst_palette_ptr + ((size_t)s[2] * 4)));
-+    wuffs_base__poke_u16le__no_bounds_check(
-+        d + (3 * 2), wuffs_base__peek_u16le__no_bounds_check(
-+                         dst_palette_ptr + ((size_t)s[3] * 4)));
-+
-+    s += loop_unroll_count * 1;
-+    d += loop_unroll_count * 2;
-+    n -= loop_unroll_count;
-+  }
-+
-   while (n >= 1) {
--    uint8_t b0 = s[0];
--    uint8_t b1 = s[1];
--    uint8_t b2 = s[2];
--    d[0] = b2;
--    d[1] = b1;
--    d[2] = b0;
--    d[3] = 0xFF;
-+    wuffs_base__poke_u16le__no_bounds_check(
-+        d + (0 * 2), wuffs_base__peek_u16le__no_bounds_check(
-+                         dst_palette_ptr + ((size_t)s[0] * 4)));
- 
--    s += 1 * 3;
--    d += 1 * 4;
-+    s += 1 * 1;
-+    d += 1 * 2;
-     n -= 1;
-   }
- 
-@@ -22732,15 +23869,19 @@ wuffs_base__pixel_swizzler__bgrw__rgb(uint8_t* dst_ptr,
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgrw__rgbx(uint8_t* dst_ptr,
--                                       size_t dst_len,
--                                       uint8_t* dst_palette_ptr,
--                                       size_t dst_palette_len,
--                                       const uint8_t* src_ptr,
--                                       size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-+wuffs_private_impl__swizzle_bgr_565__index_bgra_nonpremul__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  if (dst_palette_len !=
-+      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-+    return 0;
-+  }
-+  size_t dst_len2 = dst_len / 2;
-+  size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
-@@ -22748,82 +23889,83 @@ wuffs_base__pixel_swizzler__bgrw__rgbx(uint8_t* dst_ptr,
-   // TODO: unroll.
- 
-   while (n >= 1) {
--    uint8_t b0 = s[0];
--    uint8_t b1 = s[1];
--    uint8_t b2 = s[2];
--    d[0] = b2;
--    d[1] = b1;
--    d[2] = b0;
--    d[3] = 0xFF;
-+    uint32_t d0 = wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
-+        wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2)));
-+    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
-+                                                          ((size_t)s[0] * 4));
-+    wuffs_base__poke_u16le__no_bounds_check(
-+        d + (0 * 2),
-+        wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
-+            wuffs_private_impl__composite_premul_nonpremul_u32_axxx(d0, s0)));
- 
--    s += 1 * 4;
--    d += 1 * 4;
-+    s += 1 * 1;
-+    d += 1 * 2;
-     n -= 1;
-   }
- 
-   return len;
- }
- 
--// --------
--
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgrw_4x16le__bgr(uint8_t* dst_ptr,
--                                             size_t dst_len,
--                                             uint8_t* dst_palette_ptr,
--                                             size_t dst_palette_len,
--                                             const uint8_t* src_ptr,
--                                             size_t src_len) {
--  size_t dst_len8 = dst_len / 8;
--  size_t src_len3 = src_len / 3;
--  size_t len = (dst_len8 < src_len3) ? dst_len8 : src_len3;
-+wuffs_private_impl__swizzle_bgr_565__index_binary_alpha__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  if (dst_palette_len !=
-+      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-+    return 0;
-+  }
-+  size_t dst_len2 = dst_len / 2;
-+  size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
- 
-+  // TODO: unroll.
-+
-   while (n >= 1) {
--    uint8_t s0 = s[0];
--    uint8_t s1 = s[1];
--    uint8_t s2 = s[2];
--    d[0] = s0;
--    d[1] = s0;
--    d[2] = s1;
--    d[3] = s1;
--    d[4] = s2;
--    d[5] = s2;
--    d[6] = 0xFF;
--    d[7] = 0xFF;
-+    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
-+                                                          ((size_t)s[0] * 4));
-+    if (s0) {
-+      wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)s0);
-+    }
- 
--    s += 1 * 3;
--    d += 1 * 8;
-+    s += 1 * 1;
-+    d += 1 * 2;
-     n -= 1;
-   }
- 
-   return len;
- }
- 
-+// --------
-+
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgrw_4x16le__bgr_565(uint8_t* dst_ptr,
--                                                 size_t dst_len,
--                                                 uint8_t* dst_palette_ptr,
--                                                 size_t dst_palette_len,
--                                                 const uint8_t* src_ptr,
--                                                 size_t src_len) {
--  size_t dst_len8 = dst_len / 8;
-+wuffs_private_impl__swizzle_bgr__bgr_565(uint8_t* dst_ptr,
-+                                         size_t dst_len,
-+                                         uint8_t* dst_palette_ptr,
-+                                         size_t dst_palette_len,
-+                                         const uint8_t* src_ptr,
-+                                         size_t src_len) {
-+  size_t dst_len3 = dst_len / 3;
-   size_t src_len2 = src_len / 2;
--  size_t len = (dst_len8 < src_len2) ? dst_len8 : src_len2;
-+  size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
- 
-+  // TODO: unroll.
-+
-   while (n >= 1) {
--    wuffs_base__poke_u64le__no_bounds_check(
--        d + (0 * 8),
--        wuffs_base__color_u32__as__color_u64(
--            wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
--                wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2)))));
-+    uint32_t s0 = wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
-+        wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2)));
-+    wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
- 
-     s += 1 * 2;
--    d += 1 * 8;
-+    d += 1 * 3;
-     n -= 1;
-   }
- 
-@@ -22831,87 +23973,46 @@ wuffs_base__pixel_swizzler__bgrw_4x16le__bgr_565(uint8_t* dst_ptr,
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__bgrw_4x16le__bgrx(uint8_t* dst_ptr,
--                                              size_t dst_len,
--                                              uint8_t* dst_palette_ptr,
--                                              size_t dst_palette_len,
--                                              const uint8_t* src_ptr,
--                                              size_t src_len) {
--  size_t dst_len8 = dst_len / 8;
-+wuffs_private_impl__swizzle_bgr__bgra_nonpremul__src(uint8_t* dst_ptr,
-+                                                     size_t dst_len,
-+                                                     uint8_t* dst_palette_ptr,
-+                                                     size_t dst_palette_len,
-+                                                     const uint8_t* src_ptr,
-+                                                     size_t src_len) {
-+  size_t dst_len3 = dst_len / 3;
-   size_t src_len4 = src_len / 4;
--  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
-+  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
- 
--  while (n >= 1) {
--    uint8_t s0 = s[0];
--    uint8_t s1 = s[1];
--    uint8_t s2 = s[2];
--    d[0] = s0;
--    d[1] = s0;
--    d[2] = s1;
--    d[3] = s1;
--    d[4] = s2;
--    d[5] = s2;
--    d[6] = 0xFF;
--    d[7] = 0xFF;
--
--    s += 1 * 4;
--    d += 1 * 8;
--    n -= 1;
--  }
--
--  return len;
--}
--
--static uint64_t  //
--wuffs_base__pixel_swizzler__bgrw_4x16le__rgb(uint8_t* dst_ptr,
--                                             size_t dst_len,
--                                             uint8_t* dst_palette_ptr,
--                                             size_t dst_palette_len,
--                                             const uint8_t* src_ptr,
--                                             size_t src_len) {
--  size_t dst_len8 = dst_len / 8;
--  size_t src_len3 = src_len / 3;
--  size_t len = (dst_len8 < src_len3) ? dst_len8 : src_len3;
--  uint8_t* d = dst_ptr;
--  const uint8_t* s = src_ptr;
--  size_t n = len;
-+  // TODO: unroll.
- 
-   while (n >= 1) {
--    uint8_t s0 = s[0];
--    uint8_t s1 = s[1];
--    uint8_t s2 = s[2];
--    d[0] = s2;
--    d[1] = s2;
--    d[2] = s1;
--    d[3] = s1;
--    d[4] = s0;
--    d[5] = s0;
--    d[6] = 0xFF;
--    d[7] = 0xFF;
-+    uint32_t s0 =
-+        wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
-+            wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
-+    wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
- 
--    s += 1 * 3;
--    d += 1 * 8;
-+    s += 1 * 4;
-+    d += 1 * 3;
-     n -= 1;
-   }
- 
-   return len;
- }
- 
--// --------
--
- static uint64_t  //
--wuffs_base__pixel_swizzler__rgb__bgr_565(uint8_t* dst_ptr,
--                                         size_t dst_len,
--                                         uint8_t* dst_palette_ptr,
--                                         size_t dst_palette_len,
--                                         const uint8_t* src_ptr,
--                                         size_t src_len) {
-+wuffs_private_impl__swizzle_bgr__bgra_nonpremul_4x16le__src(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-   size_t dst_len3 = dst_len / 3;
--  size_t src_len2 = src_len / 2;
--  size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2;
-+  size_t src_len8 = src_len / 8;
-+  size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
-@@ -22919,13 +24020,12 @@ wuffs_base__pixel_swizzler__rgb__bgr_565(uint8_t* dst_ptr,
-   // TODO: unroll.
- 
-   while (n >= 1) {
--    wuffs_base__poke_u24le__no_bounds_check(
--        d + (0 * 3),
--        wuffs_base__swap_u32_argb_abgr(
--            wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
--                wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2)))));
-+    uint32_t s0 =
-+        wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
-+            wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)));
-+    wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
- 
--    s += 1 * 2;
-+    s += 1 * 8;
-     d += 1 * 3;
-     n -= 1;
-   }
-@@ -22933,154 +24033,200 @@ wuffs_base__pixel_swizzler__rgb__bgr_565(uint8_t* dst_ptr,
-   return len;
- }
- 
--// --------
--
- static uint64_t  //
--wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src(
-+wuffs_private_impl__swizzle_bgr__bgra_nonpremul__src_over(
-     uint8_t* dst_ptr,
-     size_t dst_len,
-     uint8_t* dst_palette_ptr,
-     size_t dst_palette_len,
-     const uint8_t* src_ptr,
-     size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
--  size_t src_len8 = src_len / 8;
--  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
-+  size_t dst_len3 = dst_len / 3;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
--
-   size_t n = len;
-+
-+  // TODO: unroll.
-+
-   while (n >= 1) {
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4), wuffs_base__color_u64__as__color_u32__swap_u32_argb_abgr(
--                         wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8))));
-+    // Extract 16-bit color components.
-+    uint32_t dr = 0x101 * ((uint32_t)d[2]);
-+    uint32_t dg = 0x101 * ((uint32_t)d[1]);
-+    uint32_t db = 0x101 * ((uint32_t)d[0]);
-+    uint32_t sa = 0x101 * ((uint32_t)s[3]);
-+    uint32_t sr = 0x101 * ((uint32_t)s[2]);
-+    uint32_t sg = 0x101 * ((uint32_t)s[1]);
-+    uint32_t sb = 0x101 * ((uint32_t)s[0]);
- 
--    s += 1 * 8;
--    d += 1 * 4;
-+    // Calculate the inverse of the src-alpha: how much of the dst to keep.
-+    uint32_t ia = 0xFFFF - sa;
-+
-+    // Composite src (nonpremul) over dst (premul).
-+    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
-+    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
-+    db = ((sb * sa) + (db * ia)) / 0xFFFF;
-+
-+    // Convert from 16-bit color to 8-bit color.
-+    d[0] = (uint8_t)(db >> 8);
-+    d[1] = (uint8_t)(dg >> 8);
-+    d[2] = (uint8_t)(dr >> 8);
-+
-+    s += 1 * 4;
-+    d += 1 * 3;
-     n -= 1;
-   }
-+
-   return len;
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src_over(
-+wuffs_private_impl__swizzle_bgr__bgra_nonpremul_4x16le__src_over(
-     uint8_t* dst_ptr,
-     size_t dst_len,
-     uint8_t* dst_palette_ptr,
-     size_t dst_palette_len,
-     const uint8_t* src_ptr,
-     size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
-+  size_t dst_len3 = dst_len / 3;
-   size_t src_len8 = src_len / 8;
--  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
-+  size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
- 
-+  // TODO: unroll.
-+
-   while (n >= 1) {
--    uint64_t d0 = wuffs_base__color_u32__as__color_u64(
--        wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)));
--    uint64_t s0 = wuffs_base__swap_u64_argb_abgr(
--        wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4),
--        wuffs_base__color_u64__as__color_u32(
--            wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0)));
-+    // Extract 16-bit color components.
-+    uint32_t dr = 0x101 * ((uint32_t)d[2]);
-+    uint32_t dg = 0x101 * ((uint32_t)d[1]);
-+    uint32_t db = 0x101 * ((uint32_t)d[0]);
-+    uint32_t sa = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 6));
-+    uint32_t sr = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 4));
-+    uint32_t sg = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 2));
-+    uint32_t sb = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 0));
-+
-+    // Calculate the inverse of the src-alpha: how much of the dst to keep.
-+    uint32_t ia = 0xFFFF - sa;
-+
-+    // Composite src (nonpremul) over dst (premul).
-+    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
-+    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
-+    db = ((sb * sa) + (db * ia)) / 0xFFFF;
-+
-+    // Convert from 16-bit color to 8-bit color.
-+    d[0] = (uint8_t)(db >> 8);
-+    d[1] = (uint8_t)(dg >> 8);
-+    d[2] = (uint8_t)(dr >> 8);
- 
-     s += 1 * 8;
--    d += 1 * 4;
-+    d += 1 * 3;
-     n -= 1;
-   }
- 
-   return len;
- }
- 
--// --------
--
- static uint64_t  //
--wuffs_base__pixel_swizzler__rgbw__bgr_565(uint8_t* dst_ptr,
--                                          size_t dst_len,
--                                          uint8_t* dst_palette_ptr,
--                                          size_t dst_palette_len,
--                                          const uint8_t* src_ptr,
--                                          size_t src_len) {
--  size_t dst_len4 = dst_len / 4;
--  size_t src_len2 = src_len / 2;
--  size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
-+wuffs_private_impl__swizzle_bgr__bgra_premul__src(uint8_t* dst_ptr,
-+                                                  size_t dst_len,
-+                                                  uint8_t* dst_palette_ptr,
-+                                                  size_t dst_palette_len,
-+                                                  const uint8_t* src_ptr,
-+                                                  size_t src_len) {
-+  size_t dst_len3 = dst_len / 3;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
- 
--  // TODO: unroll.
--
-   while (n >= 1) {
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4),
--        wuffs_base__swap_u32_argb_abgr(
--            wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
--                wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2)))));
-+    uint8_t s0 = s[0];
-+    uint8_t s1 = s[1];
-+    uint8_t s2 = s[2];
-+    d[0] = s0;
-+    d[1] = s1;
-+    d[2] = s2;
- 
--    s += 1 * 2;
--    d += 1 * 4;
-+    s += 1 * 4;
-+    d += 1 * 3;
-     n -= 1;
-   }
- 
-   return len;
- }
- 
--// --------
--
- static uint64_t  //
--wuffs_base__pixel_swizzler__xxx__index__src(uint8_t* dst_ptr,
--                                            size_t dst_len,
--                                            uint8_t* dst_palette_ptr,
--                                            size_t dst_palette_len,
--                                            const uint8_t* src_ptr,
--                                            size_t src_len) {
--  if (dst_palette_len !=
--      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
--    return 0;
--  }
-+wuffs_private_impl__swizzle_bgr__bgra_premul__src_over(uint8_t* dst_ptr,
-+                                                       size_t dst_len,
-+                                                       uint8_t* dst_palette_ptr,
-+                                                       size_t dst_palette_len,
-+                                                       const uint8_t* src_ptr,
-+                                                       size_t src_len) {
-   size_t dst_len3 = dst_len / 3;
--  size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
- 
--  const size_t loop_unroll_count = 4;
-+  while (n >= 1) {
-+    // Extract 16-bit color components.
-+    uint32_t dr = 0x101 * ((uint32_t)d[2]);
-+    uint32_t dg = 0x101 * ((uint32_t)d[1]);
-+    uint32_t db = 0x101 * ((uint32_t)d[0]);
-+    uint32_t sa = 0x101 * ((uint32_t)s[3]);
-+    uint32_t sr = 0x101 * ((uint32_t)s[2]);
-+    uint32_t sg = 0x101 * ((uint32_t)s[1]);
-+    uint32_t sb = 0x101 * ((uint32_t)s[0]);
- 
--  // The comparison in the while condition is ">", not ">=", because with
--  // ">=", the last 4-byte store could write past the end of the dst slice.
--  //
--  // Each 4-byte store writes one too many bytes, but a subsequent store
--  // will overwrite that with the correct byte. There is always another
--  // store, whether a 4-byte store in this loop or a 1-byte store in the
--  // next loop.
--  while (n > loop_unroll_count) {
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 3), wuffs_base__peek_u32le__no_bounds_check(
--                         dst_palette_ptr + ((size_t)s[0] * 4)));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (1 * 3), wuffs_base__peek_u32le__no_bounds_check(
--                         dst_palette_ptr + ((size_t)s[1] * 4)));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (2 * 3), wuffs_base__peek_u32le__no_bounds_check(
--                         dst_palette_ptr + ((size_t)s[2] * 4)));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (3 * 3), wuffs_base__peek_u32le__no_bounds_check(
--                         dst_palette_ptr + ((size_t)s[3] * 4)));
-+    // Calculate the inverse of the src-alpha: how much of the dst to keep.
-+    uint32_t ia = 0xFFFF - sa;
- 
--    s += loop_unroll_count * 1;
--    d += loop_unroll_count * 3;
--    n -= loop_unroll_count;
-+    // Composite src (premul) over dst (premul).
-+    dr = sr + ((dr * ia) / 0xFFFF);
-+    dg = sg + ((dg * ia) / 0xFFFF);
-+    db = sb + ((db * ia) / 0xFFFF);
-+
-+    // Convert from 16-bit color to 8-bit color.
-+    d[0] = (uint8_t)(db >> 8);
-+    d[1] = (uint8_t)(dg >> 8);
-+    d[2] = (uint8_t)(dr >> 8);
-+
-+    s += 1 * 4;
-+    d += 1 * 3;
-+    n -= 1;
-   }
- 
-+  return len;
-+}
-+
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgr__rgba_nonpremul__src(uint8_t* dst_ptr,
-+                                                     size_t dst_len,
-+                                                     uint8_t* dst_palette_ptr,
-+                                                     size_t dst_palette_len,
-+                                                     const uint8_t* src_ptr,
-+                                                     size_t src_len) {
-+  size_t dst_len3 = dst_len / 3;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
-+
-+  // TODO: unroll.
-+
-   while (n >= 1) {
--    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
--                                                          ((size_t)s[0] * 4));
-+    uint32_t s0 = wuffs_private_impl__swap_u32_argb_abgr(
-+        wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
-+            wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
-     wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
- 
--    s += 1 * 1;
-+    s += 1 * 4;
-     d += 1 * 3;
-     n -= 1;
-   }
-@@ -23089,19 +24235,16 @@ wuffs_base__pixel_swizzler__xxx__index__src(uint8_t* dst_ptr,
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__xxx__index_bgra_nonpremul__src_over(
-+wuffs_private_impl__swizzle_bgr__rgba_nonpremul_4x16le__src(
-     uint8_t* dst_ptr,
-     size_t dst_len,
-     uint8_t* dst_palette_ptr,
-     size_t dst_palette_len,
-     const uint8_t* src_ptr,
-     size_t src_len) {
--  if (dst_palette_len !=
--      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
--    return 0;
--  }
-   size_t dst_len3 = dst_len / 3;
--  size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
-+  size_t src_len8 = src_len / 8;
-+  size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
-@@ -23109,14 +24252,12 @@ wuffs_base__pixel_swizzler__xxx__index_bgra_nonpremul__src_over(
-   // TODO: unroll.
- 
-   while (n >= 1) {
--    uint32_t d0 =
--        wuffs_base__peek_u24le__no_bounds_check(d + (0 * 3)) | 0xFF000000;
--    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
--                                                          ((size_t)s[0] * 4));
--    wuffs_base__poke_u24le__no_bounds_check(
--        d + (0 * 3), wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0));
-+    uint32_t s0 = wuffs_private_impl__swap_u32_argb_abgr(
-+        wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
-+            wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8))));
-+    wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
- 
--    s += 1 * 1;
-+    s += 1 * 8;
-     d += 1 * 3;
-     n -= 1;
-   }
-@@ -23125,60 +24266,46 @@ wuffs_base__pixel_swizzler__xxx__index_bgra_nonpremul__src_over(
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over(
-+wuffs_private_impl__swizzle_bgr__rgba_nonpremul__src_over(
-     uint8_t* dst_ptr,
-     size_t dst_len,
-     uint8_t* dst_palette_ptr,
-     size_t dst_palette_len,
-     const uint8_t* src_ptr,
-     size_t src_len) {
--  if (dst_palette_len !=
--      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
--    return 0;
--  }
-   size_t dst_len3 = dst_len / 3;
--  size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
- 
--  const size_t loop_unroll_count = 4;
-+  // TODO: unroll.
- 
--  while (n >= loop_unroll_count) {
--    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
--                                                          ((size_t)s[0] * 4));
--    if (s0) {
--      wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
--    }
--    uint32_t s1 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
--                                                          ((size_t)s[1] * 4));
--    if (s1) {
--      wuffs_base__poke_u24le__no_bounds_check(d + (1 * 3), s1);
--    }
--    uint32_t s2 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
--                                                          ((size_t)s[2] * 4));
--    if (s2) {
--      wuffs_base__poke_u24le__no_bounds_check(d + (2 * 3), s2);
--    }
--    uint32_t s3 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
--                                                          ((size_t)s[3] * 4));
--    if (s3) {
--      wuffs_base__poke_u24le__no_bounds_check(d + (3 * 3), s3);
--    }
-+  while (n >= 1) {
-+    // Extract 16-bit color components.
-+    uint32_t dr = 0x101 * ((uint32_t)d[2]);
-+    uint32_t dg = 0x101 * ((uint32_t)d[1]);
-+    uint32_t db = 0x101 * ((uint32_t)d[0]);
-+    uint32_t sa = 0x101 * ((uint32_t)s[3]);
-+    uint32_t sb = 0x101 * ((uint32_t)s[2]);
-+    uint32_t sg = 0x101 * ((uint32_t)s[1]);
-+    uint32_t sr = 0x101 * ((uint32_t)s[0]);
- 
--    s += loop_unroll_count * 1;
--    d += loop_unroll_count * 3;
--    n -= loop_unroll_count;
--  }
-+    // Calculate the inverse of the src-alpha: how much of the dst to keep.
-+    uint32_t ia = 0xFFFF - sa;
- 
--  while (n >= 1) {
--    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
--                                                          ((size_t)s[0] * 4));
--    if (s0) {
--      wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
--    }
-+    // Composite src (nonpremul) over dst (premul).
-+    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
-+    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
-+    db = ((sb * sa) + (db * ia)) / 0xFFFF;
- 
--    s += 1 * 1;
-+    // Convert from 16-bit color to 8-bit color.
-+    d[0] = (uint8_t)(db >> 8);
-+    d[1] = (uint8_t)(dg >> 8);
-+    d[2] = (uint8_t)(dr >> 8);
-+
-+    s += 1 * 4;
-     d += 1 * 3;
-     n -= 1;
-   }
-@@ -23187,15 +24314,16 @@ wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over(
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__xxx__xxxx(uint8_t* dst_ptr,
--                                      size_t dst_len,
--                                      uint8_t* dst_palette_ptr,
--                                      size_t dst_palette_len,
--                                      const uint8_t* src_ptr,
--                                      size_t src_len) {
-+wuffs_private_impl__swizzle_bgr__rgba_nonpremul_4x16le__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-   size_t dst_len3 = dst_len / 3;
--  size_t src_len4 = src_len / 4;
--  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
-+  size_t src_len8 = src_len / 8;
-+  size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
-@@ -23203,10 +24331,29 @@ wuffs_base__pixel_swizzler__xxx__xxxx(uint8_t* dst_ptr,
-   // TODO: unroll.
- 
-   while (n >= 1) {
--    wuffs_base__poke_u24le__no_bounds_check(
--        d + (0 * 3), wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
-+    // Extract 16-bit color components.
-+    uint32_t dr = 0x101 * ((uint32_t)d[2]);
-+    uint32_t dg = 0x101 * ((uint32_t)d[1]);
-+    uint32_t db = 0x101 * ((uint32_t)d[0]);
-+    uint32_t sa = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 6));
-+    uint32_t sb = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 4));
-+    uint32_t sg = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 2));
-+    uint32_t sr = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 0));
- 
--    s += 1 * 4;
-+    // Calculate the inverse of the src-alpha: how much of the dst to keep.
-+    uint32_t ia = 0xFFFF - sa;
-+
-+    // Composite src (nonpremul) over dst (premul).
-+    dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
-+    dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
-+    db = ((sb * sa) + (db * ia)) / 0xFFFF;
-+
-+    // Convert from 16-bit color to 8-bit color.
-+    d[0] = (uint8_t)(db >> 8);
-+    d[1] = (uint8_t)(dg >> 8);
-+    d[2] = (uint8_t)(dr >> 8);
-+
-+    s += 1 * 8;
-     d += 1 * 3;
-     n -= 1;
-   }
-@@ -23215,27 +24362,28 @@ wuffs_base__pixel_swizzler__xxx__xxxx(uint8_t* dst_ptr,
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__xxx__y(uint8_t* dst_ptr,
--                                   size_t dst_len,
--                                   uint8_t* dst_palette_ptr,
--                                   size_t dst_palette_len,
--                                   const uint8_t* src_ptr,
--                                   size_t src_len) {
-+wuffs_private_impl__swizzle_bgr__rgba_premul__src(uint8_t* dst_ptr,
-+                                                  size_t dst_len,
-+                                                  uint8_t* dst_palette_ptr,
-+                                                  size_t dst_palette_len,
-+                                                  const uint8_t* src_ptr,
-+                                                  size_t src_len) {
-   size_t dst_len3 = dst_len / 3;
--  size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
- 
--  // TODO: unroll.
--
-   while (n >= 1) {
-     uint8_t s0 = s[0];
--    d[0] = s0;
--    d[1] = s0;
-+    uint8_t s1 = s[1];
-+    uint8_t s2 = s[2];
-+    d[0] = s2;
-+    d[1] = s1;
-     d[2] = s0;
- 
--    s += 1 * 1;
-+    s += 1 * 4;
-     d += 1 * 3;
-     n -= 1;
-   }
-@@ -23244,28 +24392,43 @@ wuffs_base__pixel_swizzler__xxx__y(uint8_t* dst_ptr,
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__xxx__y_16be(uint8_t* dst_ptr,
--                                        size_t dst_len,
--                                        uint8_t* dst_palette_ptr,
--                                        size_t dst_palette_len,
--                                        const uint8_t* src_ptr,
--                                        size_t src_len) {
-+wuffs_private_impl__swizzle_bgr__rgba_premul__src_over(uint8_t* dst_ptr,
-+                                                       size_t dst_len,
-+                                                       uint8_t* dst_palette_ptr,
-+                                                       size_t dst_palette_len,
-+                                                       const uint8_t* src_ptr,
-+                                                       size_t src_len) {
-   size_t dst_len3 = dst_len / 3;
--  size_t src_len2 = src_len / 2;
--  size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
- 
--  // TODO: unroll.
--
-   while (n >= 1) {
--    uint8_t s0 = s[0];
--    d[0] = s0;
--    d[1] = s0;
--    d[2] = s0;
-+    // Extract 16-bit color components.
-+    uint32_t dr = 0x101 * ((uint32_t)d[2]);
-+    uint32_t dg = 0x101 * ((uint32_t)d[1]);
-+    uint32_t db = 0x101 * ((uint32_t)d[0]);
-+    uint32_t sa = 0x101 * ((uint32_t)s[3]);
-+    uint32_t sb = 0x101 * ((uint32_t)s[2]);
-+    uint32_t sg = 0x101 * ((uint32_t)s[1]);
-+    uint32_t sr = 0x101 * ((uint32_t)s[0]);
- 
--    s += 1 * 2;
-+    // Calculate the inverse of the src-alpha: how much of the dst to keep.
-+    uint32_t ia = 0xFFFF - sa;
-+
-+    // Composite src (premul) over dst (premul).
-+    dr = sr + ((dr * ia) / 0xFFFF);
-+    dg = sg + ((dg * ia) / 0xFFFF);
-+    db = sb + ((db * ia) / 0xFFFF);
-+
-+    // Convert from 16-bit color to 8-bit color.
-+    d[0] = (uint8_t)(db >> 8);
-+    d[1] = (uint8_t)(dg >> 8);
-+    d[2] = (uint8_t)(dr >> 8);
-+
-+    s += 1 * 4;
-     d += 1 * 3;
-     n -= 1;
-   }
-@@ -23273,114 +24436,63 @@ wuffs_base__pixel_swizzler__xxx__y_16be(uint8_t* dst_ptr,
-   return len;
- }
- 
--// --------
--
- static uint64_t  //
--wuffs_base__pixel_swizzler__xxxx__index__src(uint8_t* dst_ptr,
--                                             size_t dst_len,
--                                             uint8_t* dst_palette_ptr,
--                                             size_t dst_palette_len,
--                                             const uint8_t* src_ptr,
--                                             size_t src_len) {
--  if (dst_palette_len !=
--      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
--    return 0;
--  }
--  size_t dst_len4 = dst_len / 4;
--  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
-+wuffs_private_impl__swizzle_bgr__rgbx(uint8_t* dst_ptr,
-+                                      size_t dst_len,
-+                                      uint8_t* dst_palette_ptr,
-+                                      size_t dst_palette_len,
-+                                      const uint8_t* src_ptr,
-+                                      size_t src_len) {
-+  size_t dst_len3 = dst_len / 3;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
- 
--  const size_t loop_unroll_count = 4;
--
--  while (n >= loop_unroll_count) {
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4), wuffs_base__peek_u32le__no_bounds_check(
--                         dst_palette_ptr + ((size_t)s[0] * 4)));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (1 * 4), wuffs_base__peek_u32le__no_bounds_check(
--                         dst_palette_ptr + ((size_t)s[1] * 4)));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (2 * 4), wuffs_base__peek_u32le__no_bounds_check(
--                         dst_palette_ptr + ((size_t)s[2] * 4)));
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (3 * 4), wuffs_base__peek_u32le__no_bounds_check(
--                         dst_palette_ptr + ((size_t)s[3] * 4)));
--
--    s += loop_unroll_count * 1;
--    d += loop_unroll_count * 4;
--    n -= loop_unroll_count;
--  }
-+  // TODO: unroll.
- 
-   while (n >= 1) {
--    wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4), wuffs_base__peek_u32le__no_bounds_check(
--                         dst_palette_ptr + ((size_t)s[0] * 4)));
-+    uint8_t b0 = s[0];
-+    uint8_t b1 = s[1];
-+    uint8_t b2 = s[2];
-+    d[0] = b2;
-+    d[1] = b1;
-+    d[2] = b0;
- 
--    s += 1 * 1;
--    d += 1 * 4;
-+    s += 1 * 4;
-+    d += 1 * 3;
-     n -= 1;
-   }
- 
-   return len;
- }
- 
-+// --------
-+
- static uint64_t  //
--wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over(
-+wuffs_private_impl__swizzle_bgra_nonpremul__bgra_nonpremul__src_over(
-     uint8_t* dst_ptr,
-     size_t dst_len,
-     uint8_t* dst_palette_ptr,
-     size_t dst_palette_len,
-     const uint8_t* src_ptr,
-     size_t src_len) {
--  if (dst_palette_len !=
--      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
--    return 0;
--  }
-   size_t dst_len4 = dst_len / 4;
--  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
- 
--  const size_t loop_unroll_count = 4;
--
--  while (n >= loop_unroll_count) {
--    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
--                                                          ((size_t)s[0] * 4));
--    if (s0) {
--      wuffs_base__poke_u32le__no_bounds_check(d + (0 * 4), s0);
--    }
--    uint32_t s1 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
--                                                          ((size_t)s[1] * 4));
--    if (s1) {
--      wuffs_base__poke_u32le__no_bounds_check(d + (1 * 4), s1);
--    }
--    uint32_t s2 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
--                                                          ((size_t)s[2] * 4));
--    if (s2) {
--      wuffs_base__poke_u32le__no_bounds_check(d + (2 * 4), s2);
--    }
--    uint32_t s3 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
--                                                          ((size_t)s[3] * 4));
--    if (s3) {
--      wuffs_base__poke_u32le__no_bounds_check(d + (3 * 4), s3);
--    }
--
--    s += loop_unroll_count * 1;
--    d += loop_unroll_count * 4;
--    n -= loop_unroll_count;
--  }
--
-   while (n >= 1) {
--    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
--                                                          ((size_t)s[0] * 4));
--    if (s0) {
--      wuffs_base__poke_u32le__no_bounds_check(d + (0 * 4), s0);
--    }
-+    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
-+    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        wuffs_private_impl__composite_nonpremul_nonpremul_u32_axxx(d0, s0));
- 
--    s += 1 * 1;
-+    s += 1 * 4;
-     d += 1 * 4;
-     n -= 1;
-   }
-@@ -23388,75 +24500,88 @@ wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over(
-   return len;
- }
- 
--// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
- static uint64_t  //
--wuffs_base__pixel_swizzler__xxxx__y__x86_sse42(uint8_t* dst_ptr,
--                                               size_t dst_len,
--                                               uint8_t* dst_palette_ptr,
--                                               size_t dst_palette_len,
--                                               const uint8_t* src_ptr,
--                                               size_t src_len) {
-+wuffs_private_impl__swizzle_bgra_nonpremul__bgra_nonpremul_4x16le__src(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-   size_t dst_len4 = dst_len / 4;
--  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
-+  size_t src_len8 = src_len / 8;
-+  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-+
-   size_t n = len;
-+  while (n >= 1) {
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4), wuffs_base__color_u64__as__color_u32(
-+                         wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8))));
- 
--  __m128i shuffle = _mm_set_epi8(+0x03, +0x03, +0x03, +0x03,  //
--                                 +0x02, +0x02, +0x02, +0x02,  //
--                                 +0x01, +0x01, +0x01, +0x01,  //
--                                 +0x00, +0x00, +0x00, +0x00);
--  __m128i or_ff = _mm_set_epi8(-0x01, +0x00, +0x00, +0x00,  //
--                               -0x01, +0x00, +0x00, +0x00,  //
--                               -0x01, +0x00, +0x00, +0x00,  //
--                               -0x01, +0x00, +0x00, +0x00);
--
--  while (n >= 4) {
--    __m128i x;
--    x = _mm_cvtsi32_si128((int)(wuffs_base__peek_u32le__no_bounds_check(s)));
--    x = _mm_shuffle_epi8(x, shuffle);
--    x = _mm_or_si128(x, or_ff);
--    _mm_storeu_si128((__m128i*)(void*)d, x);
--
--    s += 4 * 1;
--    d += 4 * 4;
--    n -= 4;
-+    s += 1 * 8;
-+    d += 1 * 4;
-+    n -= 1;
-   }
-+  return len;
-+}
-+
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_nonpremul__bgra_nonpremul_4x16le__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len8 = src_len / 8;
-+  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
-   while (n >= 1) {
-+    uint64_t d0 = wuffs_base__color_u32__as__color_u64(
-+        wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)));
-+    uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
-     wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0]));
-+        d + (0 * 4),
-+        wuffs_base__color_u64__as__color_u32(
-+            wuffs_private_impl__composite_nonpremul_nonpremul_u64_axxx(d0,
-+                                                                       s0)));
- 
--    s += 1 * 1;
-+    s += 1 * 8;
-     d += 1 * 4;
-     n -= 1;
-   }
- 
-   return len;
- }
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__xxxx__y(uint8_t* dst_ptr,
--                                    size_t dst_len,
--                                    uint8_t* dst_palette_ptr,
--                                    size_t dst_palette_len,
--                                    const uint8_t* src_ptr,
--                                    size_t src_len) {
-+wuffs_private_impl__swizzle_bgra_nonpremul__bgra_premul__src(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-   size_t dst_len4 = dst_len / 4;
--  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
- 
-   while (n >= 1) {
-+    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
-     wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0]));
-+        d + (0 * 4),
-+        wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(s0));
- 
--    s += 1 * 1;
-+    s += 1 * 4;
-     d += 1 * 4;
-     n -= 1;
-   }
-@@ -23465,24 +24590,28 @@ wuffs_base__pixel_swizzler__xxxx__y(uint8_t* dst_ptr,
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__xxxx__y_16be(uint8_t* dst_ptr,
--                                         size_t dst_len,
--                                         uint8_t* dst_palette_ptr,
--                                         size_t dst_palette_len,
--                                         const uint8_t* src_ptr,
--                                         size_t src_len) {
-+wuffs_private_impl__swizzle_bgra_nonpremul__bgra_premul__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-   size_t dst_len4 = dst_len / 4;
--  size_t src_len2 = src_len / 2;
--  size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
- 
-   while (n >= 1) {
-+    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
-+    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
-     wuffs_base__poke_u32le__no_bounds_check(
--        d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0]));
-+        d + (0 * 4),
-+        wuffs_private_impl__composite_nonpremul_premul_u32_axxx(d0, s0));
- 
--    s += 1 * 2;
-+    s += 1 * 4;
-     d += 1 * 4;
-     n -= 1;
-   }
-@@ -23490,33 +24619,36 @@ wuffs_base__pixel_swizzler__xxxx__y_16be(uint8_t* dst_ptr,
-   return len;
- }
- 
--// --------
--
- static uint64_t  //
--wuffs_base__pixel_swizzler__xxxxxxxx__index__src(uint8_t* dst_ptr,
--                                                 size_t dst_len,
--                                                 uint8_t* dst_palette_ptr,
--                                                 size_t dst_palette_len,
--                                                 const uint8_t* src_ptr,
--                                                 size_t src_len) {
-+wuffs_private_impl__swizzle_bgra_nonpremul__index_bgra_nonpremul__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-   if (dst_palette_len !=
-       WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-     return 0;
-   }
--  size_t dst_len8 = dst_len / 8;
--  size_t len = (dst_len8 < src_len) ? dst_len8 : src_len;
-+  size_t dst_len4 = dst_len / 4;
-+  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
- 
-+  // TODO: unroll.
-+
-   while (n >= 1) {
--    wuffs_base__poke_u64le__no_bounds_check(
--        d + (0 * 8), wuffs_base__color_u32__as__color_u64(
--                         wuffs_base__peek_u32le__no_bounds_check(
--                             dst_palette_ptr + ((size_t)s[0] * 4))));
-+    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
-+    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
-+                                                          ((size_t)s[0] * 4));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        wuffs_private_impl__composite_nonpremul_nonpremul_u32_axxx(d0, s0));
- 
-     s += 1 * 1;
--    d += 1 * 8;
-+    d += 1 * 4;
-     n -= 1;
-   }
- 
-@@ -23524,33 +24656,30 @@ wuffs_base__pixel_swizzler__xxxxxxxx__index__src(uint8_t* dst_ptr,
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__xxxxxxxx__index_binary_alpha__src_over(
-+wuffs_private_impl__swizzle_bgra_nonpremul__rgba_nonpremul__src_over(
-     uint8_t* dst_ptr,
-     size_t dst_len,
-     uint8_t* dst_palette_ptr,
-     size_t dst_palette_len,
-     const uint8_t* src_ptr,
-     size_t src_len) {
--  if (dst_palette_len !=
--      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
--    return 0;
--  }
--  size_t dst_len8 = dst_len / 8;
--  size_t len = (dst_len8 < src_len) ? dst_len8 : src_len;
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
- 
-   while (n >= 1) {
--    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
--                                                          ((size_t)s[0] * 4));
--    if (s0) {
--      wuffs_base__poke_u64le__no_bounds_check(
--          d + (0 * 8), wuffs_base__color_u32__as__color_u64(s0));
--    }
-+    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
-+    uint32_t s0 = wuffs_private_impl__swap_u32_argb_abgr(
-+        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        wuffs_private_impl__composite_nonpremul_nonpremul_u32_axxx(d0, s0));
- 
--    s += 1 * 1;
--    d += 1 * 8;
-+    s += 1 * 4;
-+    d += 1 * 4;
-     n -= 1;
-   }
- 
-@@ -23558,24 +24687,29 @@ wuffs_base__pixel_swizzler__xxxxxxxx__index_binary_alpha__src_over(
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__xxxxxxxx__y(uint8_t* dst_ptr,
--                                        size_t dst_len,
--                                        uint8_t* dst_palette_ptr,
--                                        size_t dst_palette_len,
--                                        const uint8_t* src_ptr,
--                                        size_t src_len) {
--  size_t dst_len8 = dst_len / 8;
--  size_t len = (dst_len8 < src_len) ? dst_len8 : src_len;
-+wuffs_private_impl__swizzle_bgra_nonpremul__rgba_premul__src(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
- 
-   while (n >= 1) {
--    wuffs_base__poke_u64le__no_bounds_check(
--        d + (0 * 8), 0xFFFF000000000000 | (0x010101010101 * (uint64_t)s[0]));
-+    uint32_t s0 = wuffs_private_impl__swap_u32_argb_abgr(
-+        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(s0));
- 
--    s += 1 * 1;
--    d += 1 * 8;
-+    s += 1 * 4;
-+    d += 1 * 4;
-     n -= 1;
-   }
- 
-@@ -23583,53 +24717,59 @@ wuffs_base__pixel_swizzler__xxxxxxxx__y(uint8_t* dst_ptr,
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__xxxxxxxx__y_16be(uint8_t* dst_ptr,
--                                             size_t dst_len,
--                                             uint8_t* dst_palette_ptr,
--                                             size_t dst_palette_len,
--                                             const uint8_t* src_ptr,
--                                             size_t src_len) {
--  size_t dst_len8 = dst_len / 8;
--  size_t src_len2 = src_len / 2;
--  size_t len = (dst_len8 < src_len2) ? dst_len8 : src_len2;
-+wuffs_private_impl__swizzle_bgra_nonpremul__rgba_premul__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
- 
-   while (n >= 1) {
--    uint64_t s0 =
--        ((uint64_t)(wuffs_base__peek_u16be__no_bounds_check(s + (0 * 2))));
--    wuffs_base__poke_u64le__no_bounds_check(
--        d + (0 * 8), 0xFFFF000000000000 | (0x000100010001 * s0));
-+    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
-+    uint32_t s0 = wuffs_private_impl__swap_u32_argb_abgr(
-+        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        wuffs_private_impl__composite_nonpremul_premul_u32_axxx(d0, s0));
- 
--    s += 1 * 2;
--    d += 1 * 8;
-+    s += 1 * 4;
-+    d += 1 * 4;
-     n -= 1;
-   }
- 
-   return len;
- }
- 
--// --------
--
- static uint64_t  //
--wuffs_base__pixel_swizzler__y__y_16be(uint8_t* dst_ptr,
--                                      size_t dst_len,
--                                      uint8_t* dst_palette_ptr,
--                                      size_t dst_palette_len,
--                                      const uint8_t* src_ptr,
--                                      size_t src_len) {
-+wuffs_private_impl__swizzle_bgra_nonpremul__ya_nonpremul__src(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-   size_t src_len2 = src_len / 2;
--  size_t len = (dst_len < src_len2) ? dst_len : src_len2;
-+  size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
- 
-+  // TODO: unroll.
-+
-   while (n >= 1) {
--    d[0] = s[0];
-+    uint32_t s0 = ((uint32_t)(s[1]) << 24) | ((uint32_t)(s[0]) * 0x010101);
-+    wuffs_base__poke_u32le__no_bounds_check(d + (0 * 4), s0);
- 
-     s += 1 * 2;
--    d += 1 * 1;
-+    d += 1 * 4;
-     n -= 1;
-   }
- 
-@@ -23637,27 +24777,31 @@ wuffs_base__pixel_swizzler__y__y_16be(uint8_t* dst_ptr,
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__y_16le__y_16be(uint8_t* dst_ptr,
--                                           size_t dst_len,
--                                           uint8_t* dst_palette_ptr,
--                                           size_t dst_palette_len,
--                                           const uint8_t* src_ptr,
--                                           size_t src_len) {
--  size_t dst_len2 = dst_len / 2;
-+wuffs_private_impl__swizzle_bgra_nonpremul__ya_nonpremul__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-   size_t src_len2 = src_len / 2;
--  size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2;
-+  size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
-   uint8_t* d = dst_ptr;
-   const uint8_t* s = src_ptr;
-   size_t n = len;
- 
-+  // TODO: unroll.
-+
-   while (n >= 1) {
--    uint8_t s0 = s[0];
--    uint8_t s1 = s[1];
--    d[0] = s1;
--    d[1] = s0;
-+    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
-+    uint32_t s0 = ((uint32_t)(s[1]) << 24) | ((uint32_t)(s[0]) * 0x010101);
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        wuffs_private_impl__composite_nonpremul_nonpremul_u32_axxx(d0, s0));
- 
-     s += 1 * 2;
--    d += 1 * 2;
-+    d += 1 * 4;
-     n -= 1;
-   }
- 
-@@ -23667,6862 +24811,6000 @@ wuffs_base__pixel_swizzler__y_16le__y_16be(uint8_t* dst_ptr,
- // --------
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__transparent_black_src(
-+wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__bgra_nonpremul__src(
-     uint8_t* dst_ptr,
-     size_t dst_len,
-     uint8_t* dst_palette_ptr,
-     size_t dst_palette_len,
--    uint64_t num_pixels,
--    uint32_t dst_pixfmt_bytes_per_pixel) {
--  uint64_t n = ((uint64_t)dst_len) / dst_pixfmt_bytes_per_pixel;
--  if (n > num_pixels) {
--    n = num_pixels;
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len8 = dst_len / 8;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+
-+  size_t n = len;
-+  while (n >= 1) {
-+    uint8_t s0 = s[0];
-+    uint8_t s1 = s[1];
-+    uint8_t s2 = s[2];
-+    uint8_t s3 = s[3];
-+    d[0] = s0;
-+    d[1] = s0;
-+    d[2] = s1;
-+    d[3] = s1;
-+    d[4] = s2;
-+    d[5] = s2;
-+    d[6] = s3;
-+    d[7] = s3;
-+
-+    s += 1 * 4;
-+    d += 1 * 8;
-+    n -= 1;
-   }
--  memset(dst_ptr, 0, ((size_t)(n * dst_pixfmt_bytes_per_pixel)));
--  return n;
-+  return len;
- }
- 
- static uint64_t  //
--wuffs_base__pixel_swizzler__transparent_black_src_over(
-+wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__bgra_nonpremul__src_over(
-     uint8_t* dst_ptr,
-     size_t dst_len,
-     uint8_t* dst_palette_ptr,
-     size_t dst_palette_len,
--    uint64_t num_pixels,
--    uint32_t dst_pixfmt_bytes_per_pixel) {
--  uint64_t n = ((uint64_t)dst_len) / dst_pixfmt_bytes_per_pixel;
--  if (n > num_pixels) {
--    n = num_pixels;
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len8 = dst_len / 8;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+
-+  size_t n = len;
-+  while (n >= 1) {
-+    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
-+    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
-+        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
-+    wuffs_base__poke_u64le__no_bounds_check(
-+        d + (0 * 8),
-+        wuffs_private_impl__composite_nonpremul_nonpremul_u64_axxx(d0, s0));
-+
-+    s += 1 * 4;
-+    d += 1 * 8;
-+    n -= 1;
-   }
--  return n;
-+  return len;
- }
- 
--// --------
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__bgra_nonpremul_4x16le__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len8 = dst_len / 8;
-+  size_t src_len8 = src_len / 8;
-+  size_t len = (dst_len8 < src_len8) ? dst_len8 : src_len8;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
- 
--static wuffs_base__pixel_swizzler__func  //
--wuffs_base__pixel_swizzler__prepare__y(wuffs_base__pixel_swizzler* p,
--                                       wuffs_base__pixel_format dst_pixfmt,
--                                       wuffs_base__slice_u8 dst_palette,
--                                       wuffs_base__slice_u8 src_palette,
--                                       wuffs_base__pixel_blend blend) {
--  switch (dst_pixfmt.repr) {
--    case WUFFS_BASE__PIXEL_FORMAT__Y:
--      return wuffs_base__pixel_swizzler__copy_1_1;
-+  size_t n = len;
-+  while (n >= 1) {
-+    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
-+    uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
-+    wuffs_base__poke_u64le__no_bounds_check(
-+        d + (0 * 8),
-+        wuffs_private_impl__composite_nonpremul_nonpremul_u64_axxx(d0, s0));
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
--      return wuffs_base__pixel_swizzler__bgr_565__y;
-+    s += 1 * 8;
-+    d += 1 * 8;
-+    n -= 1;
-+  }
-+  return len;
-+}
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGR:
--    case WUFFS_BASE__PIXEL_FORMAT__RGB:
--      return wuffs_base__pixel_swizzler__xxx__y;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__bgra_premul__src(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len8 = dst_len / 8;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--      if (wuffs_base__cpu_arch__have_x86_sse42()) {
--        return wuffs_base__pixel_swizzler__xxxx__y__x86_sse42;
--      }
--#endif
--      return wuffs_base__pixel_swizzler__xxxx__y;
-+  size_t n = len;
-+  while (n >= 1) {
-+    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
-+        wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
-+            wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
-+    wuffs_base__poke_u64le__no_bounds_check(d + (0 * 8), s0);
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE:
--      return wuffs_base__pixel_swizzler__xxxxxxxx__y;
-+    s += 1 * 4;
-+    d += 1 * 8;
-+    n -= 1;
-   }
--  return NULL;
-+  return len;
- }
- 
--static wuffs_base__pixel_swizzler__func  //
--wuffs_base__pixel_swizzler__prepare__y_16be(wuffs_base__pixel_swizzler* p,
--                                            wuffs_base__pixel_format dst_pixfmt,
--                                            wuffs_base__slice_u8 dst_palette,
--                                            wuffs_base__slice_u8 src_palette,
--                                            wuffs_base__pixel_blend blend) {
--  switch (dst_pixfmt.repr) {
--    case WUFFS_BASE__PIXEL_FORMAT__Y:
--      return wuffs_base__pixel_swizzler__y__y_16be;
--
--    case WUFFS_BASE__PIXEL_FORMAT__Y_16LE:
--      return wuffs_base__pixel_swizzler__y_16le__y_16be;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__bgra_premul__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len8 = dst_len / 8;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
--      return wuffs_base__pixel_swizzler__copy_2_2;
-+  size_t n = len;
-+  while (n >= 1) {
-+    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
-+    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
-+        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
-+    wuffs_base__poke_u64le__no_bounds_check(
-+        d + (0 * 8),
-+        wuffs_private_impl__composite_nonpremul_premul_u64_axxx(d0, s0));
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
--      return wuffs_base__pixel_swizzler__bgr_565__y_16be;
-+    s += 1 * 4;
-+    d += 1 * 8;
-+    n -= 1;
-+  }
-+  return len;
-+}
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGR:
--    case WUFFS_BASE__PIXEL_FORMAT__RGB:
--      return wuffs_base__pixel_swizzler__xxx__y_16be;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__index_bgra_nonpremul__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  if (dst_palette_len !=
-+      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-+    return 0;
-+  }
-+  size_t dst_len8 = dst_len / 8;
-+  size_t len = (dst_len8 < src_len) ? dst_len8 : src_len;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
--      return wuffs_base__pixel_swizzler__xxxx__y_16be;
-+  while (n >= 1) {
-+    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
-+    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
-+        wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
-+                                                ((size_t)s[0] * 4)));
-+    wuffs_base__poke_u64le__no_bounds_check(
-+        d + (0 * 8),
-+        wuffs_private_impl__composite_nonpremul_nonpremul_u64_axxx(d0, s0));
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE:
--      return wuffs_base__pixel_swizzler__xxxxxxxx__y_16be;
-+    s += 1 * 1;
-+    d += 1 * 8;
-+    n -= 1;
-   }
--  return NULL;
--}
- 
--static wuffs_base__pixel_swizzler__func  //
--wuffs_base__pixel_swizzler__prepare__indexed__bgra_nonpremul(
--    wuffs_base__pixel_swizzler* p,
--    wuffs_base__pixel_format dst_pixfmt,
--    wuffs_base__slice_u8 dst_palette,
--    wuffs_base__slice_u8 src_palette,
--    wuffs_base__pixel_blend blend) {
--  switch (dst_pixfmt.repr) {
--    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
--      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
--          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
--        return NULL;
--      }
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__copy_1_1;
--      }
--      return NULL;
-+  return len;
-+}
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          if (wuffs_base__pixel_swizzler__squash_align4_bgr_565_8888(
--                  dst_palette.ptr, dst_palette.len, src_palette.ptr,
--                  src_palette.len, true) !=
--              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
--            return NULL;
--          }
--          return wuffs_base__pixel_swizzler__bgr_565__index__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
--              WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
--            return NULL;
--          }
--          return wuffs_base__pixel_swizzler__bgr_565__index_bgra_nonpremul__src_over;
--      }
--      return NULL;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__rgba_nonpremul__src(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len8 = dst_len / 8;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGR:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          if (wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src(
--                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
--                  src_palette.len) !=
--              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
--            return NULL;
--          }
--          return wuffs_base__pixel_swizzler__xxx__index__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
--              WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
--            return NULL;
--          }
--          return wuffs_base__pixel_swizzler__xxx__index_bgra_nonpremul__src_over;
--      }
--      return NULL;
-+  size_t n = len;
-+  while (n >= 1) {
-+    uint8_t s0 = s[0];
-+    uint8_t s1 = s[1];
-+    uint8_t s2 = s[2];
-+    uint8_t s3 = s[3];
-+    d[0] = s2;
-+    d[1] = s2;
-+    d[2] = s1;
-+    d[3] = s1;
-+    d[4] = s0;
-+    d[5] = s0;
-+    d[6] = s3;
-+    d[7] = s3;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
--      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
--          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
--        return NULL;
--      }
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__xxxx__index__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul__index_bgra_nonpremul__src_over;
--      }
--      return NULL;
--
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
--      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
--          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
--        return NULL;
--      }
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__xxxxxxxx__index__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__index_bgra_nonpremul__src_over;
--      }
--      return NULL;
--
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          if (wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src(
--                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
--                  src_palette.len) !=
--              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
--            return NULL;
--          }
--          return wuffs_base__pixel_swizzler__xxxx__index__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
--              WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
--            return NULL;
--          }
--          return wuffs_base__pixel_swizzler__bgra_premul__index_bgra_nonpremul__src_over;
--      }
--      return NULL;
--
--    case WUFFS_BASE__PIXEL_FORMAT__RGB:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          if (wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src(
--                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
--                  src_palette.len) !=
--              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
--            return NULL;
--          }
--          return wuffs_base__pixel_swizzler__xxx__index__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(
--                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
--                  src_palette.len) !=
--              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
--            return NULL;
--          }
--          return wuffs_base__pixel_swizzler__xxx__index_bgra_nonpremul__src_over;
--      }
--      return NULL;
-+    s += 1 * 4;
-+    d += 1 * 8;
-+    n -= 1;
-+  }
-+  return len;
-+}
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
--      if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(
--              dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
--              src_palette.len) !=
--          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
--        return NULL;
--      }
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__xxxx__index__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul__index_bgra_nonpremul__src_over;
--      }
--      return NULL;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__rgba_nonpremul__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len8 = dst_len / 8;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          if (wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src(
--                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
--                  src_palette.len) !=
--              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
--            return NULL;
--          }
--          return wuffs_base__pixel_swizzler__xxxx__index__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(
--                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
--                  src_palette.len) !=
--              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
--            return NULL;
--          }
--          return wuffs_base__pixel_swizzler__bgra_premul__index_bgra_nonpremul__src_over;
--      }
--      return NULL;
-+  size_t n = len;
-+  while (n >= 1) {
-+    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
-+    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
-+        wuffs_private_impl__swap_u32_argb_abgr(
-+            wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
-+    wuffs_base__poke_u64le__no_bounds_check(
-+        d + (0 * 8),
-+        wuffs_private_impl__composite_nonpremul_nonpremul_u64_axxx(d0, s0));
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
--      // TODO.
--      break;
-+    s += 1 * 4;
-+    d += 1 * 8;
-+    n -= 1;
-   }
--  return NULL;
-+  return len;
- }
- 
--static wuffs_base__pixel_swizzler__func  //
--wuffs_base__pixel_swizzler__prepare__indexed__bgra_binary(
--    wuffs_base__pixel_swizzler* p,
--    wuffs_base__pixel_format dst_pixfmt,
--    wuffs_base__slice_u8 dst_palette,
--    wuffs_base__slice_u8 src_palette,
--    wuffs_base__pixel_blend blend) {
--  switch (dst_pixfmt.repr) {
--    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:
--      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
--          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
--        return NULL;
--      }
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__copy_1_1;
--      }
--      return NULL;
--
--    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
--      if (wuffs_base__pixel_swizzler__squash_align4_bgr_565_8888(
--              dst_palette.ptr, dst_palette.len, src_palette.ptr,
--              src_palette.len, false) !=
--          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
--        return NULL;
--      }
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgr_565__index__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgr_565__index_binary_alpha__src_over;
--      }
--      return NULL;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__rgba_premul__src(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len8 = dst_len / 8;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGR:
--      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
--          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
--        return NULL;
--      }
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__xxx__index__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over;
--      }
--      return NULL;
-+  size_t n = len;
-+  while (n >= 1) {
-+    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
-+        wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
-+            wuffs_private_impl__swap_u32_argb_abgr(
-+                wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))));
-+    wuffs_base__poke_u64le__no_bounds_check(d + (0 * 8), s0);
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
--      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
--          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
--        return NULL;
--      }
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__xxxx__index__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over;
--      }
--      return NULL;
-+    s += 1 * 4;
-+    d += 1 * 8;
-+    n -= 1;
-+  }
-+  return len;
-+}
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
--      if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
--          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
--        return NULL;
--      }
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__xxxxxxxx__index__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__xxxxxxxx__index_binary_alpha__src_over;
--      }
--      return NULL;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__rgba_premul__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len8 = dst_len / 8;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGB:
--      if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(
--              dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
--              src_palette.len) !=
--          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
--        return NULL;
--      }
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__xxx__index__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over;
--      }
--      return NULL;
-+  size_t n = len;
-+  while (n >= 1) {
-+    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
-+    uint64_t s0 = wuffs_base__color_u32__as__color_u64(
-+        wuffs_private_impl__swap_u32_argb_abgr(
-+            wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
-+    wuffs_base__poke_u64le__no_bounds_check(
-+        d + (0 * 8),
-+        wuffs_private_impl__composite_nonpremul_premul_u64_axxx(d0, s0));
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
--      if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(
--              dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
--              src_palette.len) !=
--          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
--        return NULL;
--      }
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__xxxx__index__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over;
--      }
--      return NULL;
-+    s += 1 * 4;
-+    d += 1 * 8;
-+    n -= 1;
-   }
--  return NULL;
-+  return len;
- }
- 
--static wuffs_base__pixel_swizzler__func  //
--wuffs_base__pixel_swizzler__prepare__bgr_565(
--    wuffs_base__pixel_swizzler* p,
--    wuffs_base__pixel_format dst_pixfmt,
--    wuffs_base__slice_u8 dst_palette,
--    wuffs_base__slice_u8 src_palette,
--    wuffs_base__pixel_blend blend) {
--  switch (dst_pixfmt.repr) {
--    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
--      return wuffs_base__pixel_swizzler__copy_2_2;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__ya_nonpremul__src(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len8 = dst_len / 8;
-+  size_t src_len2 = src_len / 2;
-+  size_t len = (dst_len8 < src_len2) ? dst_len8 : src_len2;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGR:
--      return wuffs_base__pixel_swizzler__bgr__bgr_565;
-+  size_t n = len;
-+  while (n >= 1) {
-+    uint64_t s0 = ((uint64_t)(s[1]) * 0x0101000000000000) |
-+                  ((uint64_t)(s[0]) * 0x0000010101010101);
-+    wuffs_base__poke_u64le__no_bounds_check(d + (0 * 8), s0);
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
--      return wuffs_base__pixel_swizzler__bgrw__bgr_565;
-+    s += 1 * 2;
-+    d += 1 * 8;
-+    n -= 1;
-+  }
-+  return len;
-+}
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
--      return wuffs_base__pixel_swizzler__bgrw_4x16le__bgr_565;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__ya_nonpremul__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len8 = dst_len / 8;
-+  size_t src_len2 = src_len / 2;
-+  size_t len = (dst_len8 < src_len2) ? dst_len8 : src_len2;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGB:
--      return wuffs_base__pixel_swizzler__rgb__bgr_565;
-+  size_t n = len;
-+  while (n >= 1) {
-+    uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
-+    uint64_t s0 = ((uint64_t)(s[1]) * 0x0101000000000000) |
-+                  ((uint64_t)(s[0]) * 0x0000010101010101);
-+    wuffs_base__poke_u64le__no_bounds_check(
-+        d + (0 * 8),
-+        wuffs_private_impl__composite_nonpremul_nonpremul_u64_axxx(d0, s0));
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
--      return wuffs_base__pixel_swizzler__rgbw__bgr_565;
-+    s += 1 * 2;
-+    d += 1 * 8;
-+    n -= 1;
-   }
--  return NULL;
-+  return len;
- }
- 
--static wuffs_base__pixel_swizzler__func  //
--wuffs_base__pixel_swizzler__prepare__bgr(wuffs_base__pixel_swizzler* p,
--                                         wuffs_base__pixel_format dst_pixfmt,
--                                         wuffs_base__slice_u8 dst_palette,
--                                         wuffs_base__slice_u8 src_palette,
--                                         wuffs_base__pixel_blend blend) {
--  switch (dst_pixfmt.repr) {
--    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
--      return wuffs_base__pixel_swizzler__bgr_565__bgr;
--
--    case WUFFS_BASE__PIXEL_FORMAT__BGR:
--      return wuffs_base__pixel_swizzler__copy_3_3;
-+// --------
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
--      return wuffs_base__pixel_swizzler__bgrw__bgr;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul__src(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
--      return wuffs_base__pixel_swizzler__bgrw_4x16le__bgr;
-+  // TODO: unroll.
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGB:
--      return wuffs_base__pixel_swizzler__swap_rgb_bgr;
-+  while (n >= 1) {
-+    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(s0));
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--      if (wuffs_base__cpu_arch__have_x86_sse42()) {
--        return wuffs_base__pixel_swizzler__bgrw__rgb__x86_sse42;
--      }
--#endif
--      return wuffs_base__pixel_swizzler__bgrw__rgb;
-+    s += 1 * 4;
-+    d += 1 * 4;
-+    n -= 1;
-   }
--  return NULL;
--}
- 
--static wuffs_base__pixel_swizzler__func  //
--wuffs_base__pixel_swizzler__prepare__bgra_nonpremul(
--    wuffs_base__pixel_swizzler* p,
--    wuffs_base__pixel_format dst_pixfmt,
--    wuffs_base__slice_u8 dst_palette,
--    wuffs_base__slice_u8 src_palette,
--    wuffs_base__pixel_blend blend) {
--  switch (dst_pixfmt.repr) {
--    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src_over;
--      }
--      return NULL;
-+  return len;
-+}
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGR:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src_over;
--      }
--      return NULL;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul_4x16le__src(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len8 = src_len / 8;
-+  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__copy_4_4;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul__src_over;
--      }
--      return NULL;
-+  // TODO: unroll.
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src_over;
--      }
--      return NULL;
-+  while (n >= 1) {
-+    uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(s0));
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over;
--      }
--      return NULL;
-+    s += 1 * 8;
-+    d += 1 * 4;
-+    n -= 1;
-+  }
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
--      // TODO.
--      break;
-+  return len;
-+}
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGB:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src_over;
--      }
--      return NULL;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--          if (wuffs_base__cpu_arch__have_x86_sse42()) {
--            return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__x86_sse42;
--          }
--#endif
--          return wuffs_base__pixel_swizzler__swap_rgbx_bgrx;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_nonpremul__src_over;
--      }
--      return NULL;
-+  // TODO: unroll.
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over;
--      }
--      return NULL;
-+  while (n >= 1) {
-+    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
-+    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        wuffs_private_impl__composite_premul_nonpremul_u32_axxx(d0, s0));
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
--      // TODO.
--      break;
-+    s += 1 * 4;
-+    d += 1 * 4;
-+    n -= 1;
-   }
--  return NULL;
-+
-+  return len;
- }
- 
--static wuffs_base__pixel_swizzler__func  //
--wuffs_base__pixel_swizzler__prepare__bgra_nonpremul_4x16le(
--    wuffs_base__pixel_swizzler* p,
--    wuffs_base__pixel_format dst_pixfmt,
--    wuffs_base__slice_u8 dst_palette,
--    wuffs_base__slice_u8 src_palette,
--    wuffs_base__pixel_blend blend) {
--  switch (dst_pixfmt.repr) {
--    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src_over;
--      }
--      return NULL;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul_4x16le__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len8 = src_len / 8;
-+  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGR:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src_over;
--      }
--      return NULL;
-+  // TODO: unroll.
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src_over;
--      }
--      return NULL;
-+  while (n >= 1) {
-+    uint64_t d0 = wuffs_base__color_u32__as__color_u64(
-+        wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)));
-+    uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        wuffs_base__color_u64__as__color_u32(
-+            wuffs_private_impl__composite_premul_nonpremul_u64_axxx(d0, s0)));
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__copy_8_8;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul_4x16le__src_over;
--      }
--      return NULL;
--
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src_over;
--      }
--      return NULL;
-+    s += 1 * 8;
-+    d += 1 * 4;
-+    n -= 1;
-+  }
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
--      // TODO.
--      break;
-+  return len;
-+}
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGB:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul_4x16le__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul_4x16le__src_over;
--      }
--      return NULL;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_premul__bgra_premul__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src_over;
--      }
--      break;
-+  // TODO: unroll.
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src_over;
--      }
--      return NULL;
-+  while (n >= 1) {
-+    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
-+    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        wuffs_private_impl__composite_premul_premul_u32_axxx(d0, s0));
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
--      // TODO.
--      break;
-+    s += 1 * 4;
-+    d += 1 * 4;
-+    n -= 1;
-   }
--  return NULL;
--}
- 
--static wuffs_base__pixel_swizzler__func  //
--wuffs_base__pixel_swizzler__prepare__bgra_premul(
--    wuffs_base__pixel_swizzler* p,
--    wuffs_base__pixel_format dst_pixfmt,
--    wuffs_base__slice_u8 dst_palette,
--    wuffs_base__slice_u8 src_palette,
--    wuffs_base__pixel_blend blend) {
--  switch (dst_pixfmt.repr) {
--    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src_over;
--      }
--      return NULL;
-+  return len;
-+}
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGR:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgr__bgra_premul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgr__bgra_premul__src_over;
--      }
--      return NULL;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_premul__index_bgra_nonpremul__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  if (dst_palette_len !=
-+      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-+    return 0;
-+  }
-+  size_t dst_len4 = dst_len / 4;
-+  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src_over;
--      }
--      return NULL;
-+  // TODO: unroll.
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src_over;
--      }
--      return NULL;
-+  while (n >= 1) {
-+    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
-+    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
-+                                                          ((size_t)s[0] * 4));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        wuffs_private_impl__composite_premul_nonpremul_u32_axxx(d0, s0));
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__copy_4_4;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over;
--      }
--      return NULL;
-+    s += 1 * 1;
-+    d += 1 * 4;
-+    n -= 1;
-+  }
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGB:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgr__rgba_premul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgr__rgba_premul__src_over;
--      }
--      return NULL;
-+  return len;
-+}
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src_over;
--      }
--      return NULL;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul__src(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--          if (wuffs_base__cpu_arch__have_x86_sse42()) {
--            return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__x86_sse42;
--          }
--#endif
--          return wuffs_base__pixel_swizzler__swap_rgbx_bgrx;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_premul__rgba_premul__src_over;
--      }
--      return NULL;
--  }
--  return NULL;
--}
-+  // TODO: unroll.
- 
--static wuffs_base__pixel_swizzler__func  //
--wuffs_base__pixel_swizzler__prepare__bgrx(wuffs_base__pixel_swizzler* p,
--                                          wuffs_base__pixel_format dst_pixfmt,
--                                          wuffs_base__slice_u8 dst_palette,
--                                          wuffs_base__slice_u8 src_palette,
--                                          wuffs_base__pixel_blend blend) {
--  switch (dst_pixfmt.repr) {
--    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
--      return wuffs_base__pixel_swizzler__bgr_565__bgrx;
-+  while (n >= 1) {
-+    uint32_t s0 = wuffs_private_impl__swap_u32_argb_abgr(
-+        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(s0));
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGR:
--      return wuffs_base__pixel_swizzler__xxx__xxxx;
-+    s += 1 * 4;
-+    d += 1 * 4;
-+    n -= 1;
-+  }
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
--      return wuffs_base__pixel_swizzler__bgrw__bgrx;
-+  return len;
-+}
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
--      return wuffs_base__pixel_swizzler__bgrw_4x16le__bgrx;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
--      return wuffs_base__pixel_swizzler__copy_4_4;
-+  // TODO: unroll.
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGB:
--      return wuffs_base__pixel_swizzler__bgr__rgbx;
-+  while (n >= 1) {
-+    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
-+    uint32_t s0 = wuffs_private_impl__swap_u32_argb_abgr(
-+        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        wuffs_private_impl__composite_premul_nonpremul_u32_axxx(d0, s0));
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
--      return wuffs_base__pixel_swizzler__bgrw__rgbx;
-+    s += 1 * 4;
-+    d += 1 * 4;
-+    n -= 1;
-   }
--  return NULL;
--}
- 
--static wuffs_base__pixel_swizzler__func  //
--wuffs_base__pixel_swizzler__prepare__rgb(wuffs_base__pixel_swizzler* p,
--                                         wuffs_base__pixel_format dst_pixfmt,
--                                         wuffs_base__slice_u8 dst_palette,
--                                         wuffs_base__slice_u8 src_palette,
--                                         wuffs_base__pixel_blend blend) {
--  switch (dst_pixfmt.repr) {
--    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
--      return wuffs_base__pixel_swizzler__bgr_565__rgb;
--
--    case WUFFS_BASE__PIXEL_FORMAT__BGR:
--      return wuffs_base__pixel_swizzler__swap_rgb_bgr;
-+  return len;
-+}
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--      if (wuffs_base__cpu_arch__have_x86_sse42()) {
--        return wuffs_base__pixel_swizzler__bgrw__rgb__x86_sse42;
--      }
--#endif
--      return wuffs_base__pixel_swizzler__bgrw__rgb;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul_4x16le__src(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len8 = src_len / 8;
-+  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
--      return wuffs_base__pixel_swizzler__bgrw_4x16le__rgb;
-+  // TODO: unroll.
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGB:
--      return wuffs_base__pixel_swizzler__copy_3_3;
-+  while (n >= 1) {
-+    uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        wuffs_private_impl__swap_u32_argb_abgr(
-+            wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
-+                s0)));
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
--      return wuffs_base__pixel_swizzler__bgrw__bgr;
-+    s += 1 * 8;
-+    d += 1 * 4;
-+    n -= 1;
-   }
--  return NULL;
--}
--
--static wuffs_base__pixel_swizzler__func  //
--wuffs_base__pixel_swizzler__prepare__rgba_nonpremul(
--    wuffs_base__pixel_swizzler* p,
--    wuffs_base__pixel_format dst_pixfmt,
--    wuffs_base__slice_u8 dst_palette,
--    wuffs_base__slice_u8 src_palette,
--    wuffs_base__pixel_blend blend) {
--  switch (dst_pixfmt.repr) {
--    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src_over;
--      }
--      return NULL;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGR:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src_over;
--      }
--      return NULL;
-+  return len;
-+}
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--          if (wuffs_base__cpu_arch__have_x86_sse42()) {
--            return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__x86_sse42;
--          }
--#endif
--          return wuffs_base__pixel_swizzler__swap_rgbx_bgrx;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_nonpremul__src_over;
--      }
--      return NULL;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul_4x16le__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len8 = src_len / 8;
-+  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src_over;
--      }
--      return NULL;
-+  // TODO: unroll.
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over;
--      }
--      return NULL;
-+  while (n >= 1) {
-+    uint64_t d0 = wuffs_base__color_u32__as__color_u64(
-+        wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)));
-+    uint64_t s0 = wuffs_private_impl__swap_u64_argb_abgr(
-+        wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        wuffs_base__color_u64__as__color_u32(
-+            wuffs_private_impl__composite_premul_nonpremul_u64_axxx(d0, s0)));
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
--      // TODO.
--      break;
-+    s += 1 * 8;
-+    d += 1 * 4;
-+    n -= 1;
-+  }
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGB:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src_over;
--      }
--      return NULL;
-+  return len;
-+}
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__copy_4_4;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul__src_over;
--      }
--      return NULL;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_premul__rgba_premul__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over;
--      }
--      return NULL;
-+  while (n >= 1) {
-+    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
-+    uint32_t s0 = wuffs_private_impl__swap_u32_argb_abgr(
-+        wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        wuffs_private_impl__composite_premul_premul_u32_axxx(d0, s0));
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
--      // TODO.
--      break;
-+    s += 1 * 4;
-+    d += 1 * 4;
-+    n -= 1;
-   }
--  return NULL;
-+
-+  return len;
- }
- 
--static wuffs_base__pixel_swizzler__func  //
--wuffs_base__pixel_swizzler__prepare__rgba_premul(
--    wuffs_base__pixel_swizzler* p,
--    wuffs_base__pixel_format dst_pixfmt,
--    wuffs_base__slice_u8 dst_palette,
--    wuffs_base__slice_u8 src_palette,
--    wuffs_base__pixel_blend blend) {
--  switch (dst_pixfmt.repr) {
--    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src_over;
--      }
--      return NULL;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_premul__ya_nonpremul__src(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len2 = src_len / 2;
-+  size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGR:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgr__rgba_premul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgr__rgba_premul__src_over;
--      }
--      return NULL;
-+  // TODO: unroll.
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src_over;
--      }
--      return NULL;
-+  while (n >= 1) {
-+    uint32_t s0 = ((uint32_t)(s[1]) << 24) | ((uint32_t)(s[0]) * 0x010101);
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(s0));
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src_over;
--      }
--      return NULL;
-+    s += 1 * 2;
-+    d += 1 * 4;
-+    n -= 1;
-+  }
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--          if (wuffs_base__cpu_arch__have_x86_sse42()) {
--            return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__x86_sse42;
--          }
--#endif
--          return wuffs_base__pixel_swizzler__swap_rgbx_bgrx;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_premul__rgba_premul__src_over;
--      }
--      return NULL;
-+  return len;
-+}
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGB:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgr__bgra_premul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgr__bgra_premul__src_over;
--      }
--      return NULL;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgra_premul__ya_nonpremul__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len2 = src_len / 2;
-+  size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src_over;
--      }
--      return NULL;
-+  // TODO: unroll.
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
--      switch (blend) {
--        case WUFFS_BASE__PIXEL_BLEND__SRC:
--          return wuffs_base__pixel_swizzler__copy_4_4;
--        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--          return wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over;
--      }
--      return NULL;
-+  while (n >= 1) {
-+    uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
-+    uint32_t s0 = ((uint32_t)(s[1]) << 24) | ((uint32_t)(s[0]) * 0x010101);
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        wuffs_private_impl__composite_premul_nonpremul_u32_axxx(d0, s0));
-+
-+    s += 1 * 2;
-+    d += 1 * 4;
-+    n -= 1;
-   }
--  return NULL;
-+
-+  return len;
- }
- 
- // --------
- 
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status  //
--wuffs_base__pixel_swizzler__prepare(wuffs_base__pixel_swizzler* p,
--                                    wuffs_base__pixel_format dst_pixfmt,
--                                    wuffs_base__slice_u8 dst_palette,
--                                    wuffs_base__pixel_format src_pixfmt,
--                                    wuffs_base__slice_u8 src_palette,
--                                    wuffs_base__pixel_blend blend) {
--  if (!p) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  p->private_impl.func = NULL;
--  p->private_impl.transparent_black_func = NULL;
--  p->private_impl.dst_pixfmt_bytes_per_pixel = 0;
--  p->private_impl.src_pixfmt_bytes_per_pixel = 0;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgrw__bgr(uint8_t* dst_ptr,
-+                                      size_t dst_len,
-+                                      uint8_t* dst_palette_ptr,
-+                                      size_t dst_palette_len,
-+                                      const uint8_t* src_ptr,
-+                                      size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len3 = src_len / 3;
-+  size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--  wuffs_base__pixel_swizzler__func func = NULL;
--  wuffs_base__pixel_swizzler__transparent_black_func transparent_black_func =
--      NULL;
-+  // TODO: unroll.
- 
--  uint32_t dst_pixfmt_bits_per_pixel =
--      wuffs_base__pixel_format__bits_per_pixel(&dst_pixfmt);
--  if ((dst_pixfmt_bits_per_pixel == 0) ||
--      ((dst_pixfmt_bits_per_pixel & 7) != 0)) {
--    return wuffs_base__make_status(
--        wuffs_base__error__unsupported_pixel_swizzler_option);
--  }
-+  while (n >= 1) {
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        0xFF000000 | wuffs_base__peek_u24le__no_bounds_check(s + (0 * 3)));
- 
--  uint32_t src_pixfmt_bits_per_pixel =
--      wuffs_base__pixel_format__bits_per_pixel(&src_pixfmt);
--  if ((src_pixfmt_bits_per_pixel == 0) ||
--      ((src_pixfmt_bits_per_pixel & 7) != 0)) {
--    return wuffs_base__make_status(
--        wuffs_base__error__unsupported_pixel_swizzler_option);
-+    s += 1 * 3;
-+    d += 1 * 4;
-+    n -= 1;
-   }
- 
--  // TODO: support many more formats.
--
--  switch (blend) {
--    case WUFFS_BASE__PIXEL_BLEND__SRC:
--      transparent_black_func =
--          wuffs_base__pixel_swizzler__transparent_black_src;
--      break;
-+  return len;
-+}
- 
--    case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
--      transparent_black_func =
--          wuffs_base__pixel_swizzler__transparent_black_src_over;
--      break;
--  }
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgrw__bgr_565(uint8_t* dst_ptr,
-+                                          size_t dst_len,
-+                                          uint8_t* dst_palette_ptr,
-+                                          size_t dst_palette_len,
-+                                          const uint8_t* src_ptr,
-+                                          size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len2 = src_len / 2;
-+  size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--  switch (src_pixfmt.repr) {
--    case WUFFS_BASE__PIXEL_FORMAT__Y:
--      func = wuffs_base__pixel_swizzler__prepare__y(p, dst_pixfmt, dst_palette,
--                                                    src_palette, blend);
--      break;
-+  // TODO: unroll.
- 
--    case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
--      func = wuffs_base__pixel_swizzler__prepare__y_16be(
--          p, dst_pixfmt, dst_palette, src_palette, blend);
--      break;
-+  while (n >= 1) {
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4), wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
-+                         wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2))));
- 
--    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
--      func = wuffs_base__pixel_swizzler__prepare__indexed__bgra_nonpremul(
--          p, dst_pixfmt, dst_palette, src_palette, blend);
--      break;
-+    s += 1 * 2;
-+    d += 1 * 4;
-+    n -= 1;
-+  }
- 
--    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:
--      func = wuffs_base__pixel_swizzler__prepare__indexed__bgra_binary(
--          p, dst_pixfmt, dst_palette, src_palette, blend);
--      break;
-+  return len;
-+}
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
--      func = wuffs_base__pixel_swizzler__prepare__bgr_565(
--          p, dst_pixfmt, dst_palette, src_palette, blend);
--      break;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgrw__bgrx(uint8_t* dst_ptr,
-+                                       size_t dst_len,
-+                                       uint8_t* dst_palette_ptr,
-+                                       size_t dst_palette_len,
-+                                       const uint8_t* src_ptr,
-+                                       size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGR:
--      func = wuffs_base__pixel_swizzler__prepare__bgr(
--          p, dst_pixfmt, dst_palette, src_palette, blend);
--      break;
-+  // TODO: unroll.
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
--      func = wuffs_base__pixel_swizzler__prepare__bgra_nonpremul(
--          p, dst_pixfmt, dst_palette, src_palette, blend);
--      break;
-+  while (n >= 1) {
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        0xFF000000 | wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
--      func = wuffs_base__pixel_swizzler__prepare__bgra_nonpremul_4x16le(
--          p, dst_pixfmt, dst_palette, src_palette, blend);
--      break;
-+    s += 1 * 4;
-+    d += 1 * 4;
-+    n -= 1;
-+  }
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
--      func = wuffs_base__pixel_swizzler__prepare__bgra_premul(
--          p, dst_pixfmt, dst_palette, src_palette, blend);
--      break;
-+  return len;
-+}
- 
--    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
--      func = wuffs_base__pixel_swizzler__prepare__bgrx(
--          p, dst_pixfmt, dst_palette, src_palette, blend);
--      break;
-+// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgrw__bgr__x86_sse42(uint8_t* dst_ptr,
-+                                                 size_t dst_len,
-+                                                 uint8_t* dst_palette_ptr,
-+                                                 size_t dst_palette_len,
-+                                                 const uint8_t* src_ptr,
-+                                                 size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len3 = src_len / 3;
-+  size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGB:
--      func = wuffs_base__pixel_swizzler__prepare__rgb(
--          p, dst_pixfmt, dst_palette, src_palette, blend);
--      break;
-+  __m128i shuffle = _mm_set_epi8(+0x00, +0x0B, +0x0A, +0x09,  //
-+                                 +0x00, +0x08, +0x07, +0x06,  //
-+                                 +0x00, +0x05, +0x04, +0x03,  //
-+                                 +0x00, +0x02, +0x01, +0x00);
-+  __m128i or_ff = _mm_set_epi8(-0x01, +0x00, +0x00, +0x00,  //
-+                               -0x01, +0x00, +0x00, +0x00,  //
-+                               -0x01, +0x00, +0x00, +0x00,  //
-+                               -0x01, +0x00, +0x00, +0x00);
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
--      func = wuffs_base__pixel_swizzler__prepare__rgba_nonpremul(
--          p, dst_pixfmt, dst_palette, src_palette, blend);
--      break;
-+  while (n >= 6) {
-+    __m128i x;
-+    x = _mm_lddqu_si128((const __m128i*)(const void*)s);
-+    x = _mm_shuffle_epi8(x, shuffle);
-+    x = _mm_or_si128(x, or_ff);
-+    _mm_storeu_si128((__m128i*)(void*)d, x);
- 
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
--      func = wuffs_base__pixel_swizzler__prepare__rgba_premul(
--          p, dst_pixfmt, dst_palette, src_palette, blend);
--      break;
-+    s += 4 * 3;
-+    d += 4 * 4;
-+    n -= 4;
-   }
- 
--  p->private_impl.func = func;
--  p->private_impl.transparent_black_func = transparent_black_func;
--  p->private_impl.dst_pixfmt_bytes_per_pixel = dst_pixfmt_bits_per_pixel / 8;
--  p->private_impl.src_pixfmt_bytes_per_pixel = src_pixfmt_bits_per_pixel / 8;
--  return wuffs_base__make_status(
--      func ? NULL : wuffs_base__error__unsupported_pixel_swizzler_option);
--}
-+  while (n >= 1) {
-+    uint8_t b0 = s[0];
-+    uint8_t b1 = s[1];
-+    uint8_t b2 = s[2];
-+    d[0] = b0;
-+    d[1] = b1;
-+    d[2] = b2;
-+    d[3] = 0xFF;
- 
--WUFFS_BASE__MAYBE_STATIC uint64_t  //
--wuffs_base__pixel_swizzler__limited_swizzle_u32_interleaved_from_reader(
--    const wuffs_base__pixel_swizzler* p,
--    uint32_t up_to_num_pixels,
--    wuffs_base__slice_u8 dst,
--    wuffs_base__slice_u8 dst_palette,
--    const uint8_t** ptr_iop_r,
--    const uint8_t* io2_r) {
--  if (p && p->private_impl.func) {
--    const uint8_t* iop_r = *ptr_iop_r;
--    uint64_t src_len = wuffs_base__u64__min(
--        ((uint64_t)up_to_num_pixels) *
--            ((uint64_t)p->private_impl.src_pixfmt_bytes_per_pixel),
--        ((uint64_t)(io2_r - iop_r)));
--    uint64_t n =
--        (*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr,
--                                dst_palette.len, iop_r, (size_t)src_len);
--    *ptr_iop_r += n * p->private_impl.src_pixfmt_bytes_per_pixel;
--    return n;
-+    s += 1 * 3;
-+    d += 1 * 4;
-+    n -= 1;
-   }
--  return 0;
--}
- 
--WUFFS_BASE__MAYBE_STATIC uint64_t  //
--wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
--    const wuffs_base__pixel_swizzler* p,
--    wuffs_base__slice_u8 dst,
--    wuffs_base__slice_u8 dst_palette,
--    const uint8_t** ptr_iop_r,
--    const uint8_t* io2_r) {
--  if (p && p->private_impl.func) {
--    const uint8_t* iop_r = *ptr_iop_r;
--    uint64_t src_len = ((uint64_t)(io2_r - iop_r));
--    uint64_t n =
--        (*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr,
--                                dst_palette.len, iop_r, (size_t)src_len);
--    *ptr_iop_r += n * p->private_impl.src_pixfmt_bytes_per_pixel;
--    return n;
--  }
--  return 0;
-+  return len;
- }
- 
--WUFFS_BASE__MAYBE_STATIC uint64_t  //
--wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(
--    const wuffs_base__pixel_swizzler* p,
--    wuffs_base__slice_u8 dst,
--    wuffs_base__slice_u8 dst_palette,
--    wuffs_base__slice_u8 src) {
--  if (p && p->private_impl.func) {
--    return (*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr,
--                                   dst_palette.len, src.ptr, src.len);
--  }
--  return 0;
--}
-+WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgrw__rgb__x86_sse42(uint8_t* dst_ptr,
-+                                                 size_t dst_len,
-+                                                 uint8_t* dst_palette_ptr,
-+                                                 size_t dst_palette_len,
-+                                                 const uint8_t* src_ptr,
-+                                                 size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len3 = src_len / 3;
-+  size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--WUFFS_BASE__MAYBE_STATIC uint64_t  //
--wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(
--    const wuffs_base__pixel_swizzler* p,
--    wuffs_base__slice_u8 dst,
--    wuffs_base__slice_u8 dst_palette,
--    uint64_t num_pixels) {
--  if (p && p->private_impl.transparent_black_func) {
--    return (*p->private_impl.transparent_black_func)(
--        dst.ptr, dst.len, dst_palette.ptr, dst_palette.len, num_pixels,
--        p->private_impl.dst_pixfmt_bytes_per_pixel);
-+  __m128i shuffle = _mm_set_epi8(+0x00, +0x09, +0x0A, +0x0B,  //
-+                                 +0x00, +0x06, +0x07, +0x08,  //
-+                                 +0x00, +0x03, +0x04, +0x05,  //
-+                                 +0x00, +0x00, +0x01, +0x02);
-+  __m128i or_ff = _mm_set_epi8(-0x01, +0x00, +0x00, +0x00,  //
-+                               -0x01, +0x00, +0x00, +0x00,  //
-+                               -0x01, +0x00, +0x00, +0x00,  //
-+                               -0x01, +0x00, +0x00, +0x00);
-+
-+  while (n >= 6) {
-+    __m128i x;
-+    x = _mm_lddqu_si128((const __m128i*)(const void*)s);
-+    x = _mm_shuffle_epi8(x, shuffle);
-+    x = _mm_or_si128(x, or_ff);
-+    _mm_storeu_si128((__m128i*)(void*)d, x);
-+
-+    s += 4 * 3;
-+    d += 4 * 4;
-+    n -= 4;
-   }
--  return 0;
--}
- 
--// --------
-+  while (n >= 1) {
-+    uint8_t b0 = s[0];
-+    uint8_t b1 = s[1];
-+    uint8_t b2 = s[2];
-+    d[0] = b2;
-+    d[1] = b1;
-+    d[2] = b0;
-+    d[3] = 0xFF;
- 
--#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
--WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
--static void  //
--wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_bgrx_x86_avx2(
--    wuffs_base__pixel_buffer* dst,
--    uint32_t x,
--    uint32_t x_end,
--    uint32_t y,
--    const uint8_t* up0,
--    const uint8_t* up1,
--    const uint8_t* up2);
-+    s += 1 * 3;
-+    d += 1 * 4;
-+    n -= 1;
-+  }
- 
--WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
--static void  //
--wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_rgbx_x86_avx2(
--    wuffs_base__pixel_buffer* dst,
--    uint32_t x,
--    uint32_t x_end,
--    uint32_t y,
--    const uint8_t* up0,
--    const uint8_t* up1,
--    const uint8_t* up2);
-+  return len;
-+}
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
- 
--#if defined(__GNUC__) && !defined(__clang__)
--// No-op.
--#else
--WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
--static const uint8_t*  //
--wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v2_triangle_x86_avx2(
--    uint8_t* dst_ptr,
--    const uint8_t* src_ptr_major,
--    const uint8_t* src_ptr_minor,
--    size_t src_len,
--    uint32_t h1v2_bias_ignored,
--    bool first_column,
--    bool last_column);
--#endif
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_64)
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgrw__rgb(uint8_t* dst_ptr,
-+                                      size_t dst_len,
-+                                      uint8_t* dst_palette_ptr,
-+                                      size_t dst_palette_len,
-+                                      const uint8_t* src_ptr,
-+                                      size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len3 = src_len / 3;
-+  size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--// --------
-+  while (n >= 1) {
-+    uint8_t b0 = s[0];
-+    uint8_t b1 = s[1];
-+    uint8_t b2 = s[2];
-+    d[0] = b2;
-+    d[1] = b1;
-+    d[2] = b0;
-+    d[3] = 0xFF;
- 
--static inline uint32_t  //
--wuffs_base__u32__max_of_4(uint32_t a, uint32_t b, uint32_t c, uint32_t d) {
--  return wuffs_base__u32__max(     //
--      wuffs_base__u32__max(a, b),  //
--      wuffs_base__u32__max(c, d));
--}
-+    s += 1 * 3;
-+    d += 1 * 4;
-+    n -= 1;
-+  }
- 
--static inline uint32_t  //
--wuffs_base__u32__min_of_5(uint32_t a,
--                          uint32_t b,
--                          uint32_t c,
--                          uint32_t d,
--                          uint32_t e) {
--  return wuffs_base__u32__min(          //
--      wuffs_base__u32__min(             //
--          wuffs_base__u32__min(a, b),   //
--          wuffs_base__u32__min(c, d)),  //
--      e);
-+  return len;
- }
- 
--// --------
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgrw__rgbx(uint8_t* dst_ptr,
-+                                       size_t dst_len,
-+                                       uint8_t* dst_palette_ptr,
-+                                       size_t dst_palette_len,
-+                                       const uint8_t* src_ptr,
-+                                       size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--typedef void (*wuffs_base__pixel_swizzler__swizzle_ycc__convert_4_func)(
--    wuffs_base__pixel_buffer* dst,
--    uint32_t x,
--    uint32_t x_end,
--    uint32_t y,
--    const uint8_t* up0,
--    const uint8_t* up1,
--    const uint8_t* up2,
--    const uint8_t* up3);
-+  // TODO: unroll.
- 
--static void  //
--wuffs_base__pixel_swizzler__swizzle_cmyk__convert_4_general(
--    wuffs_base__pixel_buffer* dst,
--    uint32_t x,
--    uint32_t x_end,
--    uint32_t y,
--    const uint8_t* up0,
--    const uint8_t* up1,
--    const uint8_t* up2,
--    const uint8_t* up3) {
--  for (; x < x_end; x++) {
--    // It's called CMYK but, but for Adobe CMYK JPEG images in practice, it's
--    // RGBW: 0xFFu means no ink instead of full ink. Note that a double
--    // inversion is a no-op, so inversions might be implicit in the code below.
--    uint32_t r = ((uint32_t)(*up0++));
--    uint32_t g = ((uint32_t)(*up1++));
--    uint32_t b = ((uint32_t)(*up2++));
--    uint32_t w = ((uint32_t)(*up3++));
--    r = ((r * w) + 0x7Fu) / 0xFFu;
--    g = ((g * w) + 0x7Fu) / 0xFFu;
--    b = ((b * w) + 0x7Fu) / 0xFFu;
--    wuffs_base__pixel_buffer__set_color_u32_at(
--        dst, x, y, 0xFF000000u | (r << 16u) | (g << 8u) | (b << 0u));
--  }
--}
-+  while (n >= 1) {
-+    uint8_t b0 = s[0];
-+    uint8_t b1 = s[1];
-+    uint8_t b2 = s[2];
-+    d[0] = b2;
-+    d[1] = b1;
-+    d[2] = b0;
-+    d[3] = 0xFF;
- 
--static void  //
--wuffs_base__pixel_swizzler__swizzle_ycck__convert_4_general(
--    wuffs_base__pixel_buffer* dst,
--    uint32_t x,
--    uint32_t x_end,
--    uint32_t y,
--    const uint8_t* up0,
--    const uint8_t* up1,
--    const uint8_t* up2,
--    const uint8_t* up3) {
--  for (; x < x_end; x++) {
--    // We invert once again: 0xFFu means no ink instead of full ink.
--    uint32_t color =                           //
--        wuffs_base__color_ycc__as__color_u32(  //
--            *up0++, *up1++, *up2++);
--    uint32_t r = 0xFFu - (0xFFu & (color >> 16u));
--    uint32_t g = 0xFFu - (0xFFu & (color >> 8u));
--    uint32_t b = 0xFFu - (0xFFu & (color >> 0u));
--    uint32_t w = ((uint32_t)(*up3++));
--    r = ((r * w) + 0x7Fu) / 0xFFu;
--    g = ((g * w) + 0x7Fu) / 0xFFu;
--    b = ((b * w) + 0x7Fu) / 0xFFu;
--    wuffs_base__pixel_buffer__set_color_u32_at(
--        dst, x, y, 0xFF000000u | (r << 16u) | (g << 8u) | (b << 0u));
-+    s += 1 * 4;
-+    d += 1 * 4;
-+    n -= 1;
-   }
-+
-+  return len;
- }
- 
- // --------
- 
--typedef void (*wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_func)(
--    wuffs_base__pixel_buffer* dst,
--    uint32_t x,
--    uint32_t x_end,
--    uint32_t y,
--    const uint8_t* up0,
--    const uint8_t* up1,
--    const uint8_t* up2);
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgrw_4x16le__bgr(uint8_t* dst_ptr,
-+                                             size_t dst_len,
-+                                             uint8_t* dst_palette_ptr,
-+                                             size_t dst_palette_len,
-+                                             const uint8_t* src_ptr,
-+                                             size_t src_len) {
-+  size_t dst_len8 = dst_len / 8;
-+  size_t src_len3 = src_len / 3;
-+  size_t len = (dst_len8 < src_len3) ? dst_len8 : src_len3;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--static void  //
--wuffs_base__pixel_swizzler__swizzle_rgb__convert_3_general(
--    wuffs_base__pixel_buffer* dst,
--    uint32_t x,
--    uint32_t x_end,
--    uint32_t y,
--    const uint8_t* up0,
--    const uint8_t* up1,
--    const uint8_t* up2) {
--  for (; x < x_end; x++) {
--    uint32_t color = 0xFF000000u |                    //
--                     (((uint32_t)(*up0++)) << 16u) |  //
--                     (((uint32_t)(*up1++)) << 8u) |   //
--                     (((uint32_t)(*up2++)) << 0u);
--    wuffs_base__pixel_buffer__set_color_u32_at(dst, x, y, color);
--  }
--}
-+  while (n >= 1) {
-+    uint8_t s0 = s[0];
-+    uint8_t s1 = s[1];
-+    uint8_t s2 = s[2];
-+    d[0] = s0;
-+    d[1] = s0;
-+    d[2] = s1;
-+    d[3] = s1;
-+    d[4] = s2;
-+    d[5] = s2;
-+    d[6] = 0xFF;
-+    d[7] = 0xFF;
- 
--static void  //
--wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_general(
--    wuffs_base__pixel_buffer* dst,
--    uint32_t x,
--    uint32_t x_end,
--    uint32_t y,
--    const uint8_t* up0,
--    const uint8_t* up1,
--    const uint8_t* up2) {
--  for (; x < x_end; x++) {
--    uint32_t color =                           //
--        wuffs_base__color_ycc__as__color_u32(  //
--            *up0++, *up1++, *up2++);
--    wuffs_base__pixel_buffer__set_color_u32_at(dst, x, y, color);
-+    s += 1 * 3;
-+    d += 1 * 8;
-+    n -= 1;
-   }
--}
--
--static void  //
--wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_bgrx(
--    wuffs_base__pixel_buffer* dst,
--    uint32_t x,
--    uint32_t x_end,
--    uint32_t y,
--    const uint8_t* up0,
--    const uint8_t* up1,
--    const uint8_t* up2) {
--  size_t dst_stride = dst->private_impl.planes[0].stride;
--  uint8_t* dst_iter = dst->private_impl.planes[0].ptr +
--                      (dst_stride * ((size_t)y)) + (4u * ((size_t)x));
- 
--  for (; x < x_end; x++) {
--    uint32_t color =                           //
--        wuffs_base__color_ycc__as__color_u32(  //
--            *up0++, *up1++, *up2++);
--    wuffs_base__poke_u32le__no_bounds_check(dst_iter, color);
--    dst_iter += 4u;
--  }
-+  return len;
- }
- 
--static void  //
--wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_rgbx(
--    wuffs_base__pixel_buffer* dst,
--    uint32_t x,
--    uint32_t x_end,
--    uint32_t y,
--    const uint8_t* up0,
--    const uint8_t* up1,
--    const uint8_t* up2) {
--  size_t dst_stride = dst->private_impl.planes[0].stride;
--  uint8_t* dst_iter = dst->private_impl.planes[0].ptr +
--                      (dst_stride * ((size_t)y)) + (4u * ((size_t)x));
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgrw_4x16le__bgr_565(uint8_t* dst_ptr,
-+                                                 size_t dst_len,
-+                                                 uint8_t* dst_palette_ptr,
-+                                                 size_t dst_palette_len,
-+                                                 const uint8_t* src_ptr,
-+                                                 size_t src_len) {
-+  size_t dst_len8 = dst_len / 8;
-+  size_t src_len2 = src_len / 2;
-+  size_t len = (dst_len8 < src_len2) ? dst_len8 : src_len2;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--  for (; x < x_end; x++) {
--    uint32_t color =                                //
--        wuffs_base__color_ycc__as__color_u32_abgr(  //
--            *up0++, *up1++, *up2++);
--    wuffs_base__poke_u32le__no_bounds_check(dst_iter, color);
--    dst_iter += 4u;
-+  while (n >= 1) {
-+    wuffs_base__poke_u64le__no_bounds_check(
-+        d + (0 * 8),
-+        wuffs_base__color_u32__as__color_u64(
-+            wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
-+                wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2)))));
-+
-+    s += 1 * 2;
-+    d += 1 * 8;
-+    n -= 1;
-   }
-+
-+  return len;
- }
- 
--// --------
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgrw_4x16le__bgrx(uint8_t* dst_ptr,
-+                                              size_t dst_len,
-+                                              uint8_t* dst_palette_ptr,
-+                                              size_t dst_palette_len,
-+                                              const uint8_t* src_ptr,
-+                                              size_t src_len) {
-+  size_t dst_len8 = dst_len / 8;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--// wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upsamples to a
--// destination slice at least 480 (YCCK) or 672 (YCC) bytes long and whose
--// src_len (multiplied by 1, 2, 3 or 4) is positive but no more than that. This
--// 480 or 672 length is just under 1/4 or 1/3 of the scratch_buffer_2k slice
--// length. Both (480 * 4) = 1920 and (672 * 3) = 2016 are less than 2048.
--//
--// 480 and 672 are nice round numbers because a JPEG MCU is 1, 2, 3 or 4 blocks
--// wide and each block is 8 pixels wide. We have:
--//   480 = 1 * 8 * 60,   672 = 1 * 8 * 84
--//   480 = 2 * 8 * 30,   672 = 2 * 8 * 42
--//   480 = 3 * 8 * 20,   672 = 3 * 8 * 28
--//   480 = 4 * 8 * 15,   672 = 4 * 8 * 21
--//
--// Box filters are equivalent to nearest neighbor upsampling. These ignore the
--// src_ptr_minor, h1v2_bias, first_column and last_column arguments.
--//
--// Triangle filters use a 3:1 ratio (in 1 dimension), or 9:3:3:1 (in 2
--// dimensions), which is higher quality (less blocky) but also higher
--// computational effort.
--//
--// In theory, we could use triangle filters for any (inv_h, inv_v) combination.
--// In practice, matching libjpeg-turbo, we only implement it for the common
--// chroma subsampling ratios (YCC420, YCC422 or YCC440), corresponding to an
--// (inv_h, inv_v) pair of (2, 2), (2, 1) or (1, 2).
--typedef const uint8_t* (
--    *wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func)(
--    uint8_t* dst_ptr,
--    const uint8_t* src_ptr_major,  // Nearest row.
--    const uint8_t* src_ptr_minor,  // Adjacent row, alternating above or below.
--    size_t src_len,
--    uint32_t h1v2_bias,
--    bool first_column,
--    bool last_column);
-+  while (n >= 1) {
-+    uint8_t s0 = s[0];
-+    uint8_t s1 = s[1];
-+    uint8_t s2 = s[2];
-+    d[0] = s0;
-+    d[1] = s0;
-+    d[2] = s1;
-+    d[3] = s1;
-+    d[4] = s2;
-+    d[5] = s2;
-+    d[6] = 0xFF;
-+    d[7] = 0xFF;
- 
--static const uint8_t*  //
--wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1vn_box(
--    uint8_t* dst_ptr,
--    const uint8_t* src_ptr_major,
--    const uint8_t* src_ptr_minor_ignored,
--    size_t src_len,
--    uint32_t h1v2_bias_ignored,
--    bool first_column_ignored,
--    bool last_column_ignored) {
--  return src_ptr_major;
-+    s += 1 * 4;
-+    d += 1 * 8;
-+    n -= 1;
-+  }
-+
-+  return len;
- }
- 
--static const uint8_t*  //
--wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2vn_box(
--    uint8_t* dst_ptr,
--    const uint8_t* src_ptr_major,
--    const uint8_t* src_ptr_minor_ignored,
--    size_t src_len,
--    uint32_t h1v2_bias_ignored,
--    bool first_column_ignored,
--    bool last_column_ignored) {
--  uint8_t* dp = dst_ptr;
--  const uint8_t* sp = src_ptr_major;
--  while (src_len--) {
--    uint8_t sv = *sp++;
--    *dp++ = sv;
--    *dp++ = sv;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_bgrw_4x16le__rgb(uint8_t* dst_ptr,
-+                                             size_t dst_len,
-+                                             uint8_t* dst_palette_ptr,
-+                                             size_t dst_palette_len,
-+                                             const uint8_t* src_ptr,
-+                                             size_t src_len) {
-+  size_t dst_len8 = dst_len / 8;
-+  size_t src_len3 = src_len / 3;
-+  size_t len = (dst_len8 < src_len3) ? dst_len8 : src_len3;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
-+
-+  while (n >= 1) {
-+    uint8_t s0 = s[0];
-+    uint8_t s1 = s[1];
-+    uint8_t s2 = s[2];
-+    d[0] = s2;
-+    d[1] = s2;
-+    d[2] = s1;
-+    d[3] = s1;
-+    d[4] = s0;
-+    d[5] = s0;
-+    d[6] = 0xFF;
-+    d[7] = 0xFF;
-+
-+    s += 1 * 3;
-+    d += 1 * 8;
-+    n -= 1;
-   }
--  return dst_ptr;
-+
-+  return len;
- }
- 
--static const uint8_t*  //
--wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h3vn_box(
--    uint8_t* dst_ptr,
--    const uint8_t* src_ptr_major,
--    const uint8_t* src_ptr_minor_ignored,
--    size_t src_len,
--    uint32_t h1v2_bias_ignored,
--    bool first_column_ignored,
--    bool last_column_ignored) {
--  uint8_t* dp = dst_ptr;
--  const uint8_t* sp = src_ptr_major;
--  while (src_len--) {
--    uint8_t sv = *sp++;
--    *dp++ = sv;
--    *dp++ = sv;
--    *dp++ = sv;
-+// --------
-+
-+static uint64_t  //
-+wuffs_private_impl__swizzle_rgb__bgr_565(uint8_t* dst_ptr,
-+                                         size_t dst_len,
-+                                         uint8_t* dst_palette_ptr,
-+                                         size_t dst_palette_len,
-+                                         const uint8_t* src_ptr,
-+                                         size_t src_len) {
-+  size_t dst_len3 = dst_len / 3;
-+  size_t src_len2 = src_len / 2;
-+  size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
-+
-+  // TODO: unroll.
-+
-+  while (n >= 1) {
-+    wuffs_base__poke_u24le__no_bounds_check(
-+        d + (0 * 3),
-+        wuffs_private_impl__swap_u32_argb_abgr(
-+            wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
-+                wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2)))));
-+
-+    s += 1 * 2;
-+    d += 1 * 3;
-+    n -= 1;
-   }
--  return dst_ptr;
-+
-+  return len;
- }
- 
--static const uint8_t*  //
--wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h4vn_box(
-+// --------
-+
-+static uint64_t  //
-+wuffs_private_impl__swizzle_rgba_nonpremul__bgra_nonpremul_4x16le__src(
-     uint8_t* dst_ptr,
--    const uint8_t* src_ptr_major,
--    const uint8_t* src_ptr_minor_ignored,
--    size_t src_len,
--    uint32_t h1v2_bias_ignored,
--    bool first_column_ignored,
--    bool last_column_ignored) {
--  uint8_t* dp = dst_ptr;
--  const uint8_t* sp = src_ptr_major;
--  while (src_len--) {
--    uint8_t sv = *sp++;
--    *dp++ = sv;
--    *dp++ = sv;
--    *dp++ = sv;
--    *dp++ = sv;
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len8 = src_len / 8;
-+  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+
-+  size_t n = len;
-+  while (n >= 1) {
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        wuffs_private_impl__color_u64__as__color_u32__swap_u32_argb_abgr(
-+            wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8))));
-+
-+    s += 1 * 8;
-+    d += 1 * 4;
-+    n -= 1;
-   }
--  return dst_ptr;
-+  return len;
- }
- 
--static const uint8_t*  //
--wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1v2_triangle(
-+static uint64_t  //
-+wuffs_private_impl__swizzle_rgba_nonpremul__bgra_nonpremul_4x16le__src_over(
-     uint8_t* dst_ptr,
--    const uint8_t* src_ptr_major,
--    const uint8_t* src_ptr_minor,
--    size_t src_len,
--    uint32_t h1v2_bias,
--    bool first_column,
--    bool last_column) {
--  uint8_t* dp = dst_ptr;
--  const uint8_t* sp_major = src_ptr_major;
--  const uint8_t* sp_minor = src_ptr_minor;
--  while (src_len--) {
--    *dp++ = (uint8_t)(((3u * ((uint32_t)(*sp_major++))) +  //
--                       (1u * ((uint32_t)(*sp_minor++))) +  //
--                       h1v2_bias) >>
--                      2u);
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len8 = src_len / 8;
-+  size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
-+
-+  while (n >= 1) {
-+    uint64_t d0 = wuffs_base__color_u32__as__color_u64(
-+        wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)));
-+    uint64_t s0 = wuffs_private_impl__swap_u64_argb_abgr(
-+        wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        wuffs_base__color_u64__as__color_u32(
-+            wuffs_private_impl__composite_nonpremul_nonpremul_u64_axxx(d0,
-+                                                                       s0)));
-+
-+    s += 1 * 8;
-+    d += 1 * 4;
-+    n -= 1;
-   }
--  return dst_ptr;
-+
-+  return len;
- }
- 
--static const uint8_t*  //
--wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v1_triangle(
--    uint8_t* dst_ptr,
--    const uint8_t* src_ptr_major,
--    const uint8_t* src_ptr_minor,
--    size_t src_len,
--    uint32_t h1v2_bias_ignored,
--    bool first_column,
--    bool last_column) {
--  uint8_t* dp = dst_ptr;
--  const uint8_t* sp = src_ptr_major;
-+// --------
- 
--  if (first_column) {
--    src_len--;
--    if ((src_len <= 0u) && last_column) {
--      uint8_t sv = *sp++;
--      *dp++ = sv;
--      *dp++ = sv;
--      return dst_ptr;
--    }
--    uint32_t svp1 = sp[+1];
--    uint8_t sv = *sp++;
--    *dp++ = sv;
--    *dp++ = (uint8_t)(((3u * (uint32_t)sv) + svp1 + 2u) >> 2u);
--    if (src_len <= 0u) {
--      return dst_ptr;
--    }
--  }
-+static uint64_t  //
-+wuffs_private_impl__swizzle_rgbw__bgr_565(uint8_t* dst_ptr,
-+                                          size_t dst_len,
-+                                          uint8_t* dst_palette_ptr,
-+                                          size_t dst_palette_len,
-+                                          const uint8_t* src_ptr,
-+                                          size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len2 = src_len / 2;
-+  size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--  if (last_column) {
--    src_len--;
--  }
-+  // TODO: unroll.
- 
--  for (; src_len > 0u; src_len--) {
--    uint32_t svm1 = sp[-1];
--    uint32_t svp1 = sp[+1];
--    uint32_t sv3 = 3u * (uint32_t)(*sp++);
--    *dp++ = (uint8_t)((sv3 + svm1 + 1u) >> 2u);
--    *dp++ = (uint8_t)((sv3 + svp1 + 2u) >> 2u);
--  }
-+  while (n >= 1) {
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4),
-+        wuffs_private_impl__swap_u32_argb_abgr(
-+            wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
-+                wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2)))));
- 
--  if (last_column) {
--    uint32_t svm1 = sp[-1];
--    uint8_t sv = *sp++;
--    *dp++ = (uint8_t)(((3u * (uint32_t)sv) + svm1 + 1u) >> 2u);
--    *dp++ = sv;
-+    s += 1 * 2;
-+    d += 1 * 4;
-+    n -= 1;
-   }
- 
--  return dst_ptr;
-+  return len;
- }
- 
--static const uint8_t*  //
--wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v2_triangle(
--    uint8_t* dst_ptr,
--    const uint8_t* src_ptr_major,
--    const uint8_t* src_ptr_minor,
--    size_t src_len,
--    uint32_t h1v2_bias_ignored,
--    bool first_column,
--    bool last_column) {
--  uint8_t* dp = dst_ptr;
--  const uint8_t* sp_major = src_ptr_major;
--  const uint8_t* sp_minor = src_ptr_minor;
-+// --------
- 
--  if (first_column) {
--    src_len--;
--    if ((src_len <= 0u) && last_column) {
--      uint32_t sv = (12u * ((uint32_t)(*sp_major++))) +  //
--                    (4u * ((uint32_t)(*sp_minor++)));
--      *dp++ = (uint8_t)((sv + 8u) >> 4u);
--      *dp++ = (uint8_t)((sv + 7u) >> 4u);
--      return dst_ptr;
--    }
-+static uint64_t  //
-+wuffs_private_impl__swizzle_xxx__index__src(uint8_t* dst_ptr,
-+                                            size_t dst_len,
-+                                            uint8_t* dst_palette_ptr,
-+                                            size_t dst_palette_len,
-+                                            const uint8_t* src_ptr,
-+                                            size_t src_len) {
-+  if (dst_palette_len !=
-+      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-+    return 0;
-+  }
-+  size_t dst_len3 = dst_len / 3;
-+  size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    uint32_t sv_major_m1 = sp_major[-0];  // Clamp offset to zero.
--    uint32_t sv_minor_m1 = sp_minor[-0];  // Clamp offset to zero.
--    uint32_t sv_major_p1 = sp_major[+1];
--    uint32_t sv_minor_p1 = sp_minor[+1];
-+  const size_t loop_unroll_count = 4;
- 
--    uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
--                  (3u * ((uint32_t)(*sp_minor++)));
--    *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
--    *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
--    if (src_len <= 0u) {
--      return dst_ptr;
--    }
--  }
-+  // The comparison in the while condition is ">", not ">=", because with
-+  // ">=", the last 4-byte store could write past the end of the dst slice.
-+  //
-+  // Each 4-byte store writes one too many bytes, but a subsequent store
-+  // will overwrite that with the correct byte. There is always another
-+  // store, whether a 4-byte store in this loop or a 1-byte store in the
-+  // next loop.
-+  while (n > loop_unroll_count) {
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 3), wuffs_base__peek_u32le__no_bounds_check(
-+                         dst_palette_ptr + ((size_t)s[0] * 4)));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (1 * 3), wuffs_base__peek_u32le__no_bounds_check(
-+                         dst_palette_ptr + ((size_t)s[1] * 4)));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (2 * 3), wuffs_base__peek_u32le__no_bounds_check(
-+                         dst_palette_ptr + ((size_t)s[2] * 4)));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (3 * 3), wuffs_base__peek_u32le__no_bounds_check(
-+                         dst_palette_ptr + ((size_t)s[3] * 4)));
- 
--  if (last_column) {
--    src_len--;
-+    s += loop_unroll_count * 1;
-+    d += loop_unroll_count * 3;
-+    n -= loop_unroll_count;
-   }
- 
--  for (; src_len > 0u; src_len--) {
--    uint32_t sv_major_m1 = sp_major[-1];
--    uint32_t sv_minor_m1 = sp_minor[-1];
--    uint32_t sv_major_p1 = sp_major[+1];
--    uint32_t sv_minor_p1 = sp_minor[+1];
-+  while (n >= 1) {
-+    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
-+                                                          ((size_t)s[0] * 4));
-+    wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
- 
--    uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
--                  (3u * ((uint32_t)(*sp_minor++)));
--    *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
--    *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
-+    s += 1 * 1;
-+    d += 1 * 3;
-+    n -= 1;
-   }
- 
--  if (last_column) {
--    uint32_t sv_major_m1 = sp_major[-1];
--    uint32_t sv_minor_m1 = sp_minor[-1];
--    uint32_t sv_major_p1 = sp_major[+0];  // Clamp offset to zero.
--    uint32_t sv_minor_p1 = sp_minor[+0];  // Clamp offset to zero.
-+  return len;
-+}
- 
--    uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
--                  (3u * ((uint32_t)(*sp_minor++)));
--    *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
--    *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
-+static uint64_t  //
-+wuffs_private_impl__swizzle_xxx__index_bgra_nonpremul__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  if (dst_palette_len !=
-+      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-+    return 0;
-   }
-+  size_t dst_len3 = dst_len / 3;
-+  size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--  return dst_ptr;
--}
-+  // TODO: unroll.
- 
--// wuffs_base__pixel_swizzler__swizzle_ycc__upsample_funcs is indexed by inv_h
--// and then inv_v.
--static const wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func
--    wuffs_base__pixel_swizzler__swizzle_ycc__upsample_funcs[4][4] = {
--        {
--            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1vn_box,
--            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1vn_box,
--            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1vn_box,
--            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1vn_box,
--        },
--        {
--            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2vn_box,
--            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2vn_box,
--            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2vn_box,
--            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2vn_box,
--        },
--        {
--            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h3vn_box,
--            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h3vn_box,
--            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h3vn_box,
--            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h3vn_box,
--        },
--        {
--            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h4vn_box,
--            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h4vn_box,
--            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h4vn_box,
--            wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h4vn_box,
--        },
--};
-+  while (n >= 1) {
-+    uint32_t d0 =
-+        wuffs_base__peek_u24le__no_bounds_check(d + (0 * 3)) | 0xFF000000;
-+    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
-+                                                          ((size_t)s[0] * 4));
-+    wuffs_base__poke_u24le__no_bounds_check(
-+        d + (0 * 3),
-+        wuffs_private_impl__composite_premul_nonpremul_u32_axxx(d0, s0));
- 
--static inline uint32_t  //
--wuffs_base__pixel_swizzler__has_triangle_upsampler(uint32_t inv_h,
--                                                   uint32_t inv_v) {
--  if (inv_h == 1u) {
--    return inv_v == 2u;
--  } else if (inv_h == 2u) {
--    return (inv_v == 1u) || (inv_v == 2u);
-+    s += 1 * 1;
-+    d += 1 * 3;
-+    n -= 1;
-   }
--  return false;
-+
-+  return len;
- }
- 
--// --------
-+static uint64_t  //
-+wuffs_private_impl__swizzle_xxx__index_binary_alpha__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  if (dst_palette_len !=
-+      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-+    return 0;
-+  }
-+  size_t dst_len3 = dst_len / 3;
-+  size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--// All of the wuffs_base__pixel_swizzler__swizzle_ycc__etc functions have
--// preconditions. See all of the checks made in
--// wuffs_base__pixel_swizzler__swizzle_ycck before calling these functions. For
--// example, (width > 0) is a precondition, but there are many more.
-+  const size_t loop_unroll_count = 4;
- 
--static void  //
--wuffs_base__pixel_swizzler__swizzle_ycck__general__triangle_filter_edge_row(
--    wuffs_base__pixel_buffer* dst,
--    uint32_t width,
--    uint32_t y,
--    const uint8_t* src_ptr0,
--    const uint8_t* src_ptr1,
--    const uint8_t* src_ptr2,
--    const uint8_t* src_ptr3,
--    uint32_t stride0,
--    uint32_t stride1,
--    uint32_t stride2,
--    uint32_t stride3,
--    uint32_t inv_h0,
--    uint32_t inv_h1,
--    uint32_t inv_h2,
--    uint32_t inv_h3,
--    uint32_t inv_v0,
--    uint32_t inv_v1,
--    uint32_t inv_v2,
--    uint32_t inv_v3,
--    uint32_t half_width_for_2to1,
--    uint32_t h1v2_bias,
--    uint8_t* scratch_buffer_2k_ptr,
--    wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc0,
--    wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc1,
--    wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc2,
--    wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc3,
--    wuffs_base__pixel_swizzler__swizzle_ycc__convert_4_func conv4func) {
--  const uint8_t* src0 = src_ptr0 + ((y / inv_v0) * (size_t)stride0);
--  const uint8_t* src1 = src_ptr1 + ((y / inv_v1) * (size_t)stride1);
--  const uint8_t* src2 = src_ptr2 + ((y / inv_v2) * (size_t)stride2);
--  const uint8_t* src3 = src_ptr3 + ((y / inv_v3) * (size_t)stride3);
--  uint32_t total_src_len0 = 0u;
--  uint32_t total_src_len1 = 0u;
--  uint32_t total_src_len2 = 0u;
--  uint32_t total_src_len3 = 0u;
--
--  uint32_t x = 0u;
--  while (x < width) {
--    bool first_column = x == 0u;
--    uint32_t end = x + 480u;
--    if (end > width) {
--      end = width;
-+  while (n >= loop_unroll_count) {
-+    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
-+                                                          ((size_t)s[0] * 4));
-+    if (s0) {
-+      wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
-+    }
-+    uint32_t s1 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
-+                                                          ((size_t)s[1] * 4));
-+    if (s1) {
-+      wuffs_base__poke_u24le__no_bounds_check(d + (1 * 3), s1);
-+    }
-+    uint32_t s2 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
-+                                                          ((size_t)s[2] * 4));
-+    if (s2) {
-+      wuffs_base__poke_u24le__no_bounds_check(d + (2 * 3), s2);
-+    }
-+    uint32_t s3 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
-+                                                          ((size_t)s[3] * 4));
-+    if (s3) {
-+      wuffs_base__poke_u24le__no_bounds_check(d + (3 * 3), s3);
-     }
- 
--    uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0;
--    uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1;
--    uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2;
--    uint32_t src_len3 = ((end - x) + inv_h3 - 1u) / inv_h3;
--    total_src_len0 += src_len0;
--    total_src_len1 += src_len1;
--    total_src_len2 += src_len2;
--    total_src_len3 += src_len3;
--
--    const uint8_t* src_ptr_x0 = src0 + (x / inv_h0);
--    const uint8_t* up0 = (*upfunc0)(          //
--        scratch_buffer_2k_ptr + (0u * 480u),  //
--        src_ptr_x0,                           //
--        src_ptr_x0,                           //
--        src_len0,                             //
--        h1v2_bias,                            //
--        first_column,                         //
--        (total_src_len0 >= half_width_for_2to1));
--
--    const uint8_t* src_ptr_x1 = src1 + (x / inv_h1);
--    const uint8_t* up1 = (*upfunc1)(          //
--        scratch_buffer_2k_ptr + (1u * 480u),  //
--        src_ptr_x1,                           //
--        src_ptr_x1,                           //
--        src_len1,                             //
--        h1v2_bias,                            //
--        first_column,                         //
--        (total_src_len1 >= half_width_for_2to1));
--
--    const uint8_t* src_ptr_x2 = src2 + (x / inv_h2);
--    const uint8_t* up2 = (*upfunc2)(          //
--        scratch_buffer_2k_ptr + (2u * 480u),  //
--        src_ptr_x2,                           //
--        src_ptr_x2,                           //
--        src_len2,                             //
--        h1v2_bias,                            //
--        first_column,                         //
--        (total_src_len2 >= half_width_for_2to1));
-+    s += loop_unroll_count * 1;
-+    d += loop_unroll_count * 3;
-+    n -= loop_unroll_count;
-+  }
- 
--    const uint8_t* src_ptr_x3 = src3 + (x / inv_h3);
--    const uint8_t* up3 = (*upfunc3)(          //
--        scratch_buffer_2k_ptr + (3u * 480u),  //
--        src_ptr_x3,                           //
--        src_ptr_x3,                           //
--        src_len3,                             //
--        h1v2_bias,                            //
--        first_column,                         //
--        (total_src_len3 >= half_width_for_2to1));
-+  while (n >= 1) {
-+    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
-+                                                          ((size_t)s[0] * 4));
-+    if (s0) {
-+      wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
-+    }
- 
--    (*conv4func)(dst, x, end, y, up0, up1, up2, up3);
--    x = end;
-+    s += 1 * 1;
-+    d += 1 * 3;
-+    n -= 1;
-   }
--}
--
--static void  //
--wuffs_base__pixel_swizzler__swizzle_ycck__general__triangle_filter(
--    wuffs_base__pixel_buffer* dst,
--    uint32_t width,
--    uint32_t height,
--    const uint8_t* src_ptr0,
--    const uint8_t* src_ptr1,
--    const uint8_t* src_ptr2,
--    const uint8_t* src_ptr3,
--    uint32_t stride0,
--    uint32_t stride1,
--    uint32_t stride2,
--    uint32_t stride3,
--    uint32_t inv_h0,
--    uint32_t inv_h1,
--    uint32_t inv_h2,
--    uint32_t inv_h3,
--    uint32_t inv_v0,
--    uint32_t inv_v1,
--    uint32_t inv_v2,
--    uint32_t inv_v3,
--    uint32_t half_width_for_2to1,
--    uint32_t half_height_for_2to1,
--    uint8_t* scratch_buffer_2k_ptr,
--    wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func (*upfuncs)[4][4],
--    wuffs_base__pixel_swizzler__swizzle_ycc__convert_4_func conv4func) {
--  wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc0 =
--      (*upfuncs)[(inv_h0 - 1u) & 3u][(inv_v0 - 1u) & 3u];
--  wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc1 =
--      (*upfuncs)[(inv_h1 - 1u) & 3u][(inv_v1 - 1u) & 3u];
--  wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc2 =
--      (*upfuncs)[(inv_h2 - 1u) & 3u][(inv_v2 - 1u) & 3u];
--  wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc3 =
--      (*upfuncs)[(inv_h3 - 1u) & 3u][(inv_v3 - 1u) & 3u];
- 
--  // First row.
--  uint32_t h1v2_bias = 1u;
--  wuffs_base__pixel_swizzler__swizzle_ycck__general__triangle_filter_edge_row(
--      dst, width, 0u,                          //
--      src_ptr0, src_ptr1, src_ptr2, src_ptr3,  //
--      stride0, stride1, stride2, stride3,      //
--      inv_h0, inv_h1, inv_h2, inv_h3,          //
--      inv_v0, inv_v1, inv_v2, inv_v3,          //
--      half_width_for_2to1,                     //
--      h1v2_bias,                               //
--      scratch_buffer_2k_ptr,                   //
--      upfunc0, upfunc1, upfunc2, upfunc3, conv4func);
--  h1v2_bias = 2u;
-+  return len;
-+}
- 
--  // Middle rows.
--  bool last_row = height == 2u * half_height_for_2to1;
--  uint32_t y_max_excl = last_row ? (height - 1u) : height;
--  uint32_t y;
--  for (y = 1u; y < y_max_excl; y++) {
--    const uint8_t* src0_major = src_ptr0 + ((y / inv_v0) * (size_t)stride0);
--    const uint8_t* src0_minor =
--        (inv_v0 != 2u)
--            ? src0_major
--            : ((y & 1u) ? (src0_major + stride0) : (src0_major - stride0));
--    const uint8_t* src1_major = src_ptr1 + ((y / inv_v1) * (size_t)stride1);
--    const uint8_t* src1_minor =
--        (inv_v1 != 2u)
--            ? src1_major
--            : ((y & 1u) ? (src1_major + stride1) : (src1_major - stride1));
--    const uint8_t* src2_major = src_ptr2 + ((y / inv_v2) * (size_t)stride2);
--    const uint8_t* src2_minor =
--        (inv_v2 != 2u)
--            ? src2_major
--            : ((y & 1u) ? (src2_major + stride2) : (src2_major - stride2));
--    const uint8_t* src3_major = src_ptr3 + ((y / inv_v3) * (size_t)stride3);
--    const uint8_t* src3_minor =
--        (inv_v3 != 2u)
--            ? src3_major
--            : ((y & 1u) ? (src3_major + stride3) : (src3_major - stride3));
--    uint32_t total_src_len0 = 0u;
--    uint32_t total_src_len1 = 0u;
--    uint32_t total_src_len2 = 0u;
--    uint32_t total_src_len3 = 0u;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_xxx__xxxx(uint8_t* dst_ptr,
-+                                      size_t dst_len,
-+                                      uint8_t* dst_palette_ptr,
-+                                      size_t dst_palette_len,
-+                                      const uint8_t* src_ptr,
-+                                      size_t src_len) {
-+  size_t dst_len3 = dst_len / 3;
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    uint32_t x = 0u;
--    while (x < width) {
--      bool first_column = x == 0u;
--      uint32_t end = x + 480u;
--      if (end > width) {
--        end = width;
--      }
-+  // TODO: unroll.
- 
--      uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0;
--      uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1;
--      uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2;
--      uint32_t src_len3 = ((end - x) + inv_h3 - 1u) / inv_h3;
--      total_src_len0 += src_len0;
--      total_src_len1 += src_len1;
--      total_src_len2 += src_len2;
--      total_src_len3 += src_len3;
-+  while (n >= 1) {
-+    wuffs_base__poke_u24le__no_bounds_check(
-+        d + (0 * 3), wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
- 
--      const uint8_t* up0 = (*upfunc0)(          //
--          scratch_buffer_2k_ptr + (0u * 480u),  //
--          src0_major + (x / inv_h0),            //
--          src0_minor + (x / inv_h0),            //
--          src_len0,                             //
--          h1v2_bias,                            //
--          first_column,                         //
--          (total_src_len0 >= half_width_for_2to1));
-+    s += 1 * 4;
-+    d += 1 * 3;
-+    n -= 1;
-+  }
- 
--      const uint8_t* up1 = (*upfunc1)(          //
--          scratch_buffer_2k_ptr + (1u * 480u),  //
--          src1_major + (x / inv_h1),            //
--          src1_minor + (x / inv_h1),            //
--          src_len1,                             //
--          h1v2_bias,                            //
--          first_column,                         //
--          (total_src_len1 >= half_width_for_2to1));
-+  return len;
-+}
- 
--      const uint8_t* up2 = (*upfunc2)(          //
--          scratch_buffer_2k_ptr + (2u * 480u),  //
--          src2_major + (x / inv_h2),            //
--          src2_minor + (x / inv_h2),            //
--          src_len2,                             //
--          h1v2_bias,                            //
--          first_column,                         //
--          (total_src_len2 >= half_width_for_2to1));
-+static uint64_t  //
-+wuffs_private_impl__swizzle_xxx__y(uint8_t* dst_ptr,
-+                                   size_t dst_len,
-+                                   uint8_t* dst_palette_ptr,
-+                                   size_t dst_palette_len,
-+                                   const uint8_t* src_ptr,
-+                                   size_t src_len) {
-+  size_t dst_len3 = dst_len / 3;
-+  size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--      const uint8_t* up3 = (*upfunc3)(          //
--          scratch_buffer_2k_ptr + (3u * 480u),  //
--          src3_major + (x / inv_h3),            //
--          src3_minor + (x / inv_h3),            //
--          src_len3,                             //
--          h1v2_bias,                            //
--          first_column,                         //
--          (total_src_len3 >= half_width_for_2to1));
-+  // TODO: unroll.
- 
--      (*conv4func)(dst, x, end, y, up0, up1, up2, up3);
--      x = end;
--    }
-+  while (n >= 1) {
-+    uint8_t s0 = s[0];
-+    d[0] = s0;
-+    d[1] = s0;
-+    d[2] = s0;
- 
--    h1v2_bias ^= 3u;
-+    s += 1 * 1;
-+    d += 1 * 3;
-+    n -= 1;
-   }
- 
--  // Last row.
--  if (y_max_excl != height) {
--    wuffs_base__pixel_swizzler__swizzle_ycck__general__triangle_filter_edge_row(
--        dst, width, height - 1u,                 //
--        src_ptr0, src_ptr1, src_ptr2, src_ptr3,  //
--        stride0, stride1, stride2, stride3,      //
--        inv_h0, inv_h1, inv_h2, inv_h3,          //
--        inv_v0, inv_v1, inv_v2, inv_v3,          //
--        half_width_for_2to1,                     //
--        h1v2_bias,                               //
--        scratch_buffer_2k_ptr,                   //
--        upfunc0, upfunc1, upfunc2, upfunc3, conv4func);
--  }
-+  return len;
- }
- 
--static void  //
--wuffs_base__pixel_swizzler__swizzle_ycc__general__triangle_filter_edge_row(
--    wuffs_base__pixel_buffer* dst,
--    uint32_t width,
--    uint32_t y,
--    const uint8_t* src_ptr0,
--    const uint8_t* src_ptr1,
--    const uint8_t* src_ptr2,
--    uint32_t stride0,
--    uint32_t stride1,
--    uint32_t stride2,
--    uint32_t inv_h0,
--    uint32_t inv_h1,
--    uint32_t inv_h2,
--    uint32_t inv_v0,
--    uint32_t inv_v1,
--    uint32_t inv_v2,
--    uint32_t half_width_for_2to1,
--    uint32_t h1v2_bias,
--    uint8_t* scratch_buffer_2k_ptr,
--    wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc0,
--    wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc1,
--    wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc2,
--    wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_func conv3func) {
--  const uint8_t* src0 = src_ptr0 + ((y / inv_v0) * (size_t)stride0);
--  const uint8_t* src1 = src_ptr1 + ((y / inv_v1) * (size_t)stride1);
--  const uint8_t* src2 = src_ptr2 + ((y / inv_v2) * (size_t)stride2);
--  uint32_t total_src_len0 = 0u;
--  uint32_t total_src_len1 = 0u;
--  uint32_t total_src_len2 = 0u;
--
--  uint32_t x = 0u;
--  while (x < width) {
--    bool first_column = x == 0u;
--    uint32_t end = x + 672u;
--    if (end > width) {
--      end = width;
--    }
--
--    uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0;
--    uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1;
--    uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2;
--    total_src_len0 += src_len0;
--    total_src_len1 += src_len1;
--    total_src_len2 += src_len2;
--
--    const uint8_t* src_ptr_x0 = src0 + (x / inv_h0);
--    const uint8_t* up0 = (*upfunc0)(          //
--        scratch_buffer_2k_ptr + (0u * 672u),  //
--        src_ptr_x0,                           //
--        src_ptr_x0,                           //
--        src_len0,                             //
--        h1v2_bias,                            //
--        first_column,                         //
--        (total_src_len0 >= half_width_for_2to1));
-+static uint64_t  //
-+wuffs_private_impl__swizzle_xxx__y_16be(uint8_t* dst_ptr,
-+                                        size_t dst_len,
-+                                        uint8_t* dst_palette_ptr,
-+                                        size_t dst_palette_len,
-+                                        const uint8_t* src_ptr,
-+                                        size_t src_len) {
-+  size_t dst_len3 = dst_len / 3;
-+  size_t src_len2 = src_len / 2;
-+  size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    const uint8_t* src_ptr_x1 = src1 + (x / inv_h1);
--    const uint8_t* up1 = (*upfunc1)(          //
--        scratch_buffer_2k_ptr + (1u * 672u),  //
--        src_ptr_x1,                           //
--        src_ptr_x1,                           //
--        src_len1,                             //
--        h1v2_bias,                            //
--        first_column,                         //
--        (total_src_len1 >= half_width_for_2to1));
-+  // TODO: unroll.
- 
--    const uint8_t* src_ptr_x2 = src2 + (x / inv_h2);
--    const uint8_t* up2 = (*upfunc2)(          //
--        scratch_buffer_2k_ptr + (2u * 672u),  //
--        src_ptr_x2,                           //
--        src_ptr_x2,                           //
--        src_len2,                             //
--        h1v2_bias,                            //
--        first_column,                         //
--        (total_src_len2 >= half_width_for_2to1));
-+  while (n >= 1) {
-+    uint8_t s0 = s[0];
-+    d[0] = s0;
-+    d[1] = s0;
-+    d[2] = s0;
- 
--    (*conv3func)(dst, x, end, y, up0, up1, up2);
--    x = end;
-+    s += 1 * 2;
-+    d += 1 * 3;
-+    n -= 1;
-   }
--}
- 
--static void  //
--wuffs_base__pixel_swizzler__swizzle_ycc__general__triangle_filter(
--    wuffs_base__pixel_buffer* dst,
--    uint32_t width,
--    uint32_t height,
--    const uint8_t* src_ptr0,
--    const uint8_t* src_ptr1,
--    const uint8_t* src_ptr2,
--    uint32_t stride0,
--    uint32_t stride1,
--    uint32_t stride2,
--    uint32_t inv_h0,
--    uint32_t inv_h1,
--    uint32_t inv_h2,
--    uint32_t inv_v0,
--    uint32_t inv_v1,
--    uint32_t inv_v2,
--    uint32_t half_width_for_2to1,
--    uint32_t half_height_for_2to1,
--    uint8_t* scratch_buffer_2k_ptr,
--    wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func (*upfuncs)[4][4],
--    wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_func conv3func) {
--  wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc0 =
--      (*upfuncs)[(inv_h0 - 1u) & 3u][(inv_v0 - 1u) & 3u];
--  wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc1 =
--      (*upfuncs)[(inv_h1 - 1u) & 3u][(inv_v1 - 1u) & 3u];
--  wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc2 =
--      (*upfuncs)[(inv_h2 - 1u) & 3u][(inv_v2 - 1u) & 3u];
-+  return len;
-+}
- 
--  // First row.
--  uint32_t h1v2_bias = 1u;
--  wuffs_base__pixel_swizzler__swizzle_ycc__general__triangle_filter_edge_row(
--      dst, width, 0u,                //
--      src_ptr0, src_ptr1, src_ptr2,  //
--      stride0, stride1, stride2,     //
--      inv_h0, inv_h1, inv_h2,        //
--      inv_v0, inv_v1, inv_v2,        //
--      half_width_for_2to1,           //
--      h1v2_bias,                     //
--      scratch_buffer_2k_ptr,         //
--      upfunc0, upfunc1, upfunc2, conv3func);
--  h1v2_bias = 2u;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_xxx__ya_nonpremul__src(uint8_t* dst_ptr,
-+                                                   size_t dst_len,
-+                                                   uint8_t* dst_palette_ptr,
-+                                                   size_t dst_palette_len,
-+                                                   const uint8_t* src_ptr,
-+                                                   size_t src_len) {
-+  size_t dst_len3 = dst_len / 3;
-+  size_t src_len2 = src_len / 2;
-+  size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--  // Middle rows.
--  bool last_row = height == 2u * half_height_for_2to1;
--  uint32_t y_max_excl = last_row ? (height - 1u) : height;
--  uint32_t y;
--  for (y = 1u; y < y_max_excl; y++) {
--    const uint8_t* src0_major = src_ptr0 + ((y / inv_v0) * (size_t)stride0);
--    const uint8_t* src0_minor =
--        (inv_v0 != 2u)
--            ? src0_major
--            : ((y & 1u) ? (src0_major + stride0) : (src0_major - stride0));
--    const uint8_t* src1_major = src_ptr1 + ((y / inv_v1) * (size_t)stride1);
--    const uint8_t* src1_minor =
--        (inv_v1 != 2u)
--            ? src1_major
--            : ((y & 1u) ? (src1_major + stride1) : (src1_major - stride1));
--    const uint8_t* src2_major = src_ptr2 + ((y / inv_v2) * (size_t)stride2);
--    const uint8_t* src2_minor =
--        (inv_v2 != 2u)
--            ? src2_major
--            : ((y & 1u) ? (src2_major + stride2) : (src2_major - stride2));
--    uint32_t total_src_len0 = 0u;
--    uint32_t total_src_len1 = 0u;
--    uint32_t total_src_len2 = 0u;
-+  // TODO: unroll.
- 
--    uint32_t x = 0u;
--    while (x < width) {
--      bool first_column = x == 0u;
--      uint32_t end = x + 672u;
--      if (end > width) {
--        end = width;
--      }
-+  while (n >= 1) {
-+    uint32_t s0 = ((uint32_t)(s[1]) << 24) | ((uint32_t)(s[0]) * 0x010101);
-+    wuffs_base__poke_u24le__no_bounds_check(
-+        d + (0 * 3),
-+        wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(s0));
- 
--      uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0;
--      uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1;
--      uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2;
--      total_src_len0 += src_len0;
--      total_src_len1 += src_len1;
--      total_src_len2 += src_len2;
-+    s += 1 * 2;
-+    d += 1 * 3;
-+    n -= 1;
-+  }
- 
--      const uint8_t* up0 = (*upfunc0)(          //
--          scratch_buffer_2k_ptr + (0u * 672u),  //
--          src0_major + (x / inv_h0),            //
--          src0_minor + (x / inv_h0),            //
--          src_len0,                             //
--          h1v2_bias,                            //
--          first_column,                         //
--          (total_src_len0 >= half_width_for_2to1));
-+  return len;
-+}
- 
--      const uint8_t* up1 = (*upfunc1)(          //
--          scratch_buffer_2k_ptr + (1u * 672u),  //
--          src1_major + (x / inv_h1),            //
--          src1_minor + (x / inv_h1),            //
--          src_len1,                             //
--          h1v2_bias,                            //
--          first_column,                         //
--          (total_src_len1 >= half_width_for_2to1));
-+static uint64_t  //
-+wuffs_private_impl__swizzle_xxx__ya_nonpremul__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len3 = dst_len / 3;
-+  size_t src_len2 = src_len / 2;
-+  size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--      const uint8_t* up2 = (*upfunc2)(          //
--          scratch_buffer_2k_ptr + (2u * 672u),  //
--          src2_major + (x / inv_h2),            //
--          src2_minor + (x / inv_h2),            //
--          src_len2,                             //
--          h1v2_bias,                            //
--          first_column,                         //
--          (total_src_len2 >= half_width_for_2to1));
-+  // TODO: unroll.
- 
--      (*conv3func)(dst, x, end, y, up0, up1, up2);
--      x = end;
--    }
-+  while (n >= 1) {
-+    uint32_t d0 =
-+        wuffs_base__peek_u24le__no_bounds_check(d + (0 * 3)) | 0xFF000000;
-+    uint32_t s0 = ((uint32_t)(s[1]) << 24) | ((uint32_t)(s[0]) * 0x010101);
-+    wuffs_base__poke_u24le__no_bounds_check(
-+        d + (0 * 3),
-+        wuffs_private_impl__composite_premul_nonpremul_u32_axxx(d0, s0));
- 
--    h1v2_bias ^= 3u;
-+    s += 1 * 2;
-+    d += 1 * 3;
-+    n -= 1;
-   }
- 
--  // Last row.
--  if (y_max_excl != height) {
--    wuffs_base__pixel_swizzler__swizzle_ycc__general__triangle_filter_edge_row(
--        dst, width, height - 1u,       //
--        src_ptr0, src_ptr1, src_ptr2,  //
--        stride0, stride1, stride2,     //
--        inv_h0, inv_h1, inv_h2,        //
--        inv_v0, inv_v1, inv_v2,        //
--        half_width_for_2to1,           //
--        h1v2_bias,                     //
--        scratch_buffer_2k_ptr,         //
--        upfunc0, upfunc1, upfunc2, conv3func);
--  }
-+  return len;
- }
- 
--static void  //
--wuffs_base__pixel_swizzler__swizzle_ycc__general__box_filter(
--    wuffs_base__pixel_buffer* dst,
--    uint32_t width,
--    uint32_t height,
--    const uint8_t* src_ptr0,
--    const uint8_t* src_ptr1,
--    const uint8_t* src_ptr2,
--    uint32_t stride0,
--    uint32_t stride1,
--    uint32_t stride2,
--    uint32_t inv_h0,
--    uint32_t inv_h1,
--    uint32_t inv_h2,
--    uint32_t inv_v0,
--    uint32_t inv_v1,
--    uint32_t inv_v2,
--    uint32_t half_width_for_2to1,
--    uint32_t half_height_for_2to1,
--    uint8_t* scratch_buffer_2k_ptr,
--    wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func (*upfuncs)[4][4],
--    wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_func conv3func) {
--  wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc0 =
--      (*upfuncs)[(inv_h0 - 1u) & 3u][(inv_v0 - 1u) & 3u];
--  wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc1 =
--      (*upfuncs)[(inv_h1 - 1u) & 3u][(inv_v1 - 1u) & 3u];
--  wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc2 =
--      (*upfuncs)[(inv_h2 - 1u) & 3u][(inv_v2 - 1u) & 3u];
--
--  uint32_t y;
--  for (y = 0u; y < height; y++) {
--    const uint8_t* src0_major = src_ptr0 + ((y / inv_v0) * (size_t)stride0);
--    const uint8_t* src1_major = src_ptr1 + ((y / inv_v1) * (size_t)stride1);
--    const uint8_t* src2_major = src_ptr2 + ((y / inv_v2) * (size_t)stride2);
-+// --------
- 
--    uint32_t x = 0u;
--    while (x < width) {
--      uint32_t end = x + 672u;
--      if (end > width) {
--        end = width;
--      }
-+static uint64_t  //
-+wuffs_private_impl__swizzle_xxxx__index__src(uint8_t* dst_ptr,
-+                                             size_t dst_len,
-+                                             uint8_t* dst_palette_ptr,
-+                                             size_t dst_palette_len,
-+                                             const uint8_t* src_ptr,
-+                                             size_t src_len) {
-+  if (dst_palette_len !=
-+      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-+    return 0;
-+  }
-+  size_t dst_len4 = dst_len / 4;
-+  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--      uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0;
--      uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1;
--      uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2;
-+  const size_t loop_unroll_count = 4;
- 
--      const uint8_t* up0 = (*upfunc0)(          //
--          scratch_buffer_2k_ptr + (0u * 672u),  //
--          src0_major + (x / inv_h0),            //
--          src0_major + (x / inv_h0),            //
--          src_len0,                             //
--          0u, false, false);
-+  while (n >= loop_unroll_count) {
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4), wuffs_base__peek_u32le__no_bounds_check(
-+                         dst_palette_ptr + ((size_t)s[0] * 4)));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (1 * 4), wuffs_base__peek_u32le__no_bounds_check(
-+                         dst_palette_ptr + ((size_t)s[1] * 4)));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (2 * 4), wuffs_base__peek_u32le__no_bounds_check(
-+                         dst_palette_ptr + ((size_t)s[2] * 4)));
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (3 * 4), wuffs_base__peek_u32le__no_bounds_check(
-+                         dst_palette_ptr + ((size_t)s[3] * 4)));
- 
--      const uint8_t* up1 = (*upfunc1)(          //
--          scratch_buffer_2k_ptr + (1u * 672u),  //
--          src1_major + (x / inv_h1),            //
--          src1_major + (x / inv_h1),            //
--          src_len1,                             //
--          0u, false, false);
-+    s += loop_unroll_count * 1;
-+    d += loop_unroll_count * 4;
-+    n -= loop_unroll_count;
-+  }
- 
--      const uint8_t* up2 = (*upfunc2)(          //
--          scratch_buffer_2k_ptr + (2u * 672u),  //
--          src2_major + (x / inv_h2),            //
--          src2_major + (x / inv_h2),            //
--          src_len2,                             //
--          0u, false, false);
-+  while (n >= 1) {
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4), wuffs_base__peek_u32le__no_bounds_check(
-+                         dst_palette_ptr + ((size_t)s[0] * 4)));
- 
--      (*conv3func)(dst, x, end, y, up0, up1, up2);
--      x = end;
--    }
-+    s += 1 * 1;
-+    d += 1 * 4;
-+    n -= 1;
-   }
--}
- 
--// --------
-+  return len;
-+}
- 
--// wuffs_base__pixel_swizzler__flattened_length is like
--// wuffs_base__table__flattened_length but returns uint64_t (not size_t) and
--// also accounts for subsampling.
- static uint64_t  //
--wuffs_base__pixel_swizzler__flattened_length(uint32_t width,
--                                             uint32_t height,
--                                             uint32_t stride,
--                                             uint32_t inv_h,
--                                             uint32_t inv_v) {
--  uint64_t scaled_width = (((uint64_t)width) + (inv_h - 1u)) / inv_h;
--  uint64_t scaled_height = (((uint64_t)height) + (inv_v - 1u)) / inv_v;
--  if (scaled_height <= 0u) {
--    return 0u;
-+wuffs_private_impl__swizzle_xxxx__index_binary_alpha__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  if (dst_palette_len !=
-+      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-+    return 0;
-   }
--  return ((scaled_height - 1u) * stride) + scaled_width;
--}
-+  size_t dst_len4 = dst_len / 4;
-+  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status  //
--wuffs_base__pixel_swizzler__swizzle_ycck(
--    const wuffs_base__pixel_swizzler* p,
--    wuffs_base__pixel_buffer* dst,
--    wuffs_base__slice_u8 dst_palette,
--    uint32_t width,
--    uint32_t height,
--    wuffs_base__slice_u8 src0,
--    wuffs_base__slice_u8 src1,
--    wuffs_base__slice_u8 src2,
--    wuffs_base__slice_u8 src3,
--    uint32_t width0,
--    uint32_t width1,
--    uint32_t width2,
--    uint32_t width3,
--    uint32_t height0,
--    uint32_t height1,
--    uint32_t height2,
--    uint32_t height3,
--    uint32_t stride0,
--    uint32_t stride1,
--    uint32_t stride2,
--    uint32_t stride3,
--    uint8_t h0,
--    uint8_t h1,
--    uint8_t h2,
--    uint8_t h3,
--    uint8_t v0,
--    uint8_t v1,
--    uint8_t v2,
--    uint8_t v3,
--    bool is_rgb_or_cmyk,
--    bool triangle_filter_for_2to1,
--    wuffs_base__slice_u8 scratch_buffer_2k) {
--  if (!p) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  } else if (!dst || (width > 0xFFFFu) || (height > 0xFFFFu) ||  //
--             (4u <= ((unsigned int)h0 - 1u)) ||                  //
--             (4u <= ((unsigned int)h1 - 1u)) ||                  //
--             (4u <= ((unsigned int)h2 - 1u)) ||                  //
--             (4u <= ((unsigned int)v0 - 1u)) ||                  //
--             (4u <= ((unsigned int)v1 - 1u)) ||                  //
--             (4u <= ((unsigned int)v2 - 1u)) ||                  //
--             (scratch_buffer_2k.len < 2048u)) {
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  const size_t loop_unroll_count = 4;
-+
-+  while (n >= loop_unroll_count) {
-+    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
-+                                                          ((size_t)s[0] * 4));
-+    if (s0) {
-+      wuffs_base__poke_u32le__no_bounds_check(d + (0 * 4), s0);
-+    }
-+    uint32_t s1 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
-+                                                          ((size_t)s[1] * 4));
-+    if (s1) {
-+      wuffs_base__poke_u32le__no_bounds_check(d + (1 * 4), s1);
-+    }
-+    uint32_t s2 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
-+                                                          ((size_t)s[2] * 4));
-+    if (s2) {
-+      wuffs_base__poke_u32le__no_bounds_check(d + (2 * 4), s2);
-+    }
-+    uint32_t s3 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
-+                                                          ((size_t)s[3] * 4));
-+    if (s3) {
-+      wuffs_base__poke_u32le__no_bounds_check(d + (3 * 4), s3);
-+    }
-+
-+    s += loop_unroll_count * 1;
-+    d += loop_unroll_count * 4;
-+    n -= loop_unroll_count;
-   }
--  if ((h3 != 0u) || (v3 != 0u)) {
--    if ((4u <= ((unsigned int)h3 - 1u)) ||  //
--        (4u <= ((unsigned int)v3 - 1u))) {
--      return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+
-+  while (n >= 1) {
-+    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
-+                                                          ((size_t)s[0] * 4));
-+    if (s0) {
-+      wuffs_base__poke_u32le__no_bounds_check(d + (0 * 4), s0);
-     }
-+
-+    s += 1 * 1;
-+    d += 1 * 4;
-+    n -= 1;
-   }
- 
--  uint32_t max_incl_h = wuffs_base__u32__max_of_4(h0, h1, h2, h3);
--  uint32_t max_incl_v = wuffs_base__u32__max_of_4(v0, v1, v2, v3);
-+  return len;
-+}
- 
--  // Calculate the inverse h and v ratios.
--  //
--  // It also canonicalizes (h=2 and max_incl_h=4) as equivalent to (h=1 and
--  // max_incl_h=2). In both cases, the inv_h value is 2.
--  uint32_t inv_h0 = max_incl_h / h0;
--  uint32_t inv_h1 = max_incl_h / h1;
--  uint32_t inv_h2 = max_incl_h / h2;
--  uint32_t inv_h3 = h3 ? (max_incl_h / h3) : 0u;
--  uint32_t inv_v0 = max_incl_v / v0;
--  uint32_t inv_v1 = max_incl_v / v1;
--  uint32_t inv_v2 = max_incl_v / v2;
--  uint32_t inv_v3 = v3 ? (max_incl_v / v3) : 0u;
-+// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
-+static uint64_t  //
-+wuffs_private_impl__swizzle_xxxx__y__x86_sse42(uint8_t* dst_ptr,
-+                                               size_t dst_len,
-+                                               uint8_t* dst_palette_ptr,
-+                                               size_t dst_palette_len,
-+                                               const uint8_t* src_ptr,
-+                                               size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--  uint32_t half_width_for_2to1 = (width + 1u) / 2u;
--  uint32_t half_height_for_2to1 = (height + 1u) / 2u;
--
--  width = wuffs_base__u32__min_of_5(  //
--      width,                          //
--      width0 * inv_h0,                //
--      width1 * inv_h1,                //
--      width2 * inv_h2,                //
--      wuffs_base__pixel_config__width(&dst->pixcfg));
--  height = wuffs_base__u32__min_of_5(  //
--      height,                          //
--      height0 * inv_v0,                //
--      height1 * inv_v1,                //
--      height2 * inv_v2,                //
--      wuffs_base__pixel_config__height(&dst->pixcfg));
-+  __m128i shuffle = _mm_set_epi8(+0x03, +0x03, +0x03, +0x03,  //
-+                                 +0x02, +0x02, +0x02, +0x02,  //
-+                                 +0x01, +0x01, +0x01, +0x01,  //
-+                                 +0x00, +0x00, +0x00, +0x00);
-+  __m128i or_ff = _mm_set_epi8(-0x01, +0x00, +0x00, +0x00,  //
-+                               -0x01, +0x00, +0x00, +0x00,  //
-+                               -0x01, +0x00, +0x00, +0x00,  //
-+                               -0x01, +0x00, +0x00, +0x00);
- 
--  if (((h0 * inv_h0) != max_incl_h) ||  //
--      ((h1 * inv_h1) != max_incl_h) ||  //
--      ((h2 * inv_h2) != max_incl_h) ||  //
--      ((v0 * inv_v0) != max_incl_v) ||  //
--      ((v1 * inv_v1) != max_incl_v) ||  //
--      ((v2 * inv_v2) != max_incl_v) ||  //
--      (src0.len < wuffs_base__pixel_swizzler__flattened_length(
--                      width, height, stride0, inv_h0, inv_v0)) ||
--      (src1.len < wuffs_base__pixel_swizzler__flattened_length(
--                      width, height, stride1, inv_h1, inv_v1)) ||
--      (src2.len < wuffs_base__pixel_swizzler__flattened_length(
--                      width, height, stride2, inv_h2, inv_v2))) {
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  if ((h3 != 0u) || (v3 != 0u)) {
--    if (((h3 * inv_h3) != max_incl_h) ||  //
--        ((v3 * inv_v3) != max_incl_v) ||  //
--        (src3.len < wuffs_base__pixel_swizzler__flattened_length(
--                        width, height, stride3, inv_h3, inv_v3))) {
--      return wuffs_base__make_status(wuffs_base__error__bad_argument);
--    }
--  }
-+  while (n >= 4) {
-+    __m128i x;
-+    x = _mm_cvtsi32_si128((int)(wuffs_base__peek_u32le__no_bounds_check(s)));
-+    x = _mm_shuffle_epi8(x, shuffle);
-+    x = _mm_or_si128(x, or_ff);
-+    _mm_storeu_si128((__m128i*)(void*)d, x);
- 
--  if (wuffs_base__pixel_format__is_planar(&dst->pixcfg.private_impl.pixfmt)) {
--    // TODO: see wuffs_base__pixel_buffer__set_color_u32_at's TODO.
--    return wuffs_base__make_status(
--        wuffs_base__error__unsupported_pixel_swizzler_option);
-+    s += 4 * 1;
-+    d += 4 * 4;
-+    n -= 4;
-   }
- 
--  switch (dst->pixcfg.private_impl.pixfmt.repr) {
--    case WUFFS_BASE__PIXEL_FORMAT__Y:
--    case WUFFS_BASE__PIXEL_FORMAT__Y_16LE:
--    case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
--    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:
--    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
--    case WUFFS_BASE__PIXEL_FORMAT__BGR:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
--    case WUFFS_BASE__PIXEL_FORMAT__RGB:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
--    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
--      break;
-+  while (n >= 1) {
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0]));
- 
--    default:
--      // TODO: see wuffs_base__pixel_buffer__set_color_u32_at's TODO.
--      return wuffs_base__make_status(
--          wuffs_base__error__unsupported_pixel_swizzler_option);
-+    s += 1 * 1;
-+    d += 1 * 4;
-+    n -= 1;
-   }
- 
--  if ((width <= 0u) || (height <= 0u)) {
--    return wuffs_base__make_status(NULL);
--  }
-+  return len;
-+}
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
- 
--  wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_func conv3func = NULL;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_xxxx__y(uint8_t* dst_ptr,
-+                                    size_t dst_len,
-+                                    uint8_t* dst_palette_ptr,
-+                                    size_t dst_palette_len,
-+                                    const uint8_t* src_ptr,
-+                                    size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--  if (is_rgb_or_cmyk) {
--    conv3func = &wuffs_base__pixel_swizzler__swizzle_rgb__convert_3_general;
--  } else {
--    switch (dst->pixcfg.private_impl.pixfmt.repr) {
--      case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
--      case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
--      case WUFFS_BASE__PIXEL_FORMAT__BGRX:
--#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
--        if (wuffs_base__cpu_arch__have_x86_avx2()) {
--          conv3func =
--              &wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_bgrx_x86_avx2;
--          break;
--        }
--#endif
--        conv3func = &wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_bgrx;
--        break;
--      case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
--      case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
--      case WUFFS_BASE__PIXEL_FORMAT__RGBX:
--#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
--        if (wuffs_base__cpu_arch__have_x86_avx2()) {
--          conv3func =
--              &wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_rgbx_x86_avx2;
--          break;
--        }
--#endif
--        conv3func = &wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_rgbx;
--        break;
--      default:
--        conv3func = &wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_general;
--        break;
--    }
-+  while (n >= 1) {
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0]));
-+
-+    s += 1 * 1;
-+    d += 1 * 4;
-+    n -= 1;
-   }
- 
--  void (*func)(
--      wuffs_base__pixel_buffer * dst,  //
--      uint32_t width,                  //
--      uint32_t height,                 //
--      const uint8_t* src_ptr0,         //
--      const uint8_t* src_ptr1,         //
--      const uint8_t* src_ptr2,         //
--      uint32_t stride0,                //
--      uint32_t stride1,                //
--      uint32_t stride2,                //
--      uint32_t inv_h0,                 //
--      uint32_t inv_h1,                 //
--      uint32_t inv_h2,                 //
--      uint32_t inv_v0,                 //
--      uint32_t inv_v1,                 //
--      uint32_t inv_v2,                 //
--      uint32_t half_width_for_2to1,    //
--      uint32_t half_height_for_2to1,   //
--      uint8_t* scratch_buffer_2k_ptr,  //
--      wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func(*upfuncs)[4][4],
--      wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_func conv3func) =
--      &wuffs_base__pixel_swizzler__swizzle_ycc__general__box_filter;
--
--  wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfuncs[4][4];
--  memcpy(&upfuncs, &wuffs_base__pixel_swizzler__swizzle_ycc__upsample_funcs,
--         sizeof upfuncs);
-+  return len;
-+}
- 
--  if (triangle_filter_for_2to1 &&
--      (wuffs_base__pixel_swizzler__has_triangle_upsampler(inv_h0, inv_v0) ||
--       wuffs_base__pixel_swizzler__has_triangle_upsampler(inv_h1, inv_v1) ||
--       wuffs_base__pixel_swizzler__has_triangle_upsampler(inv_h2, inv_v2))) {
--    func = &wuffs_base__pixel_swizzler__swizzle_ycc__general__triangle_filter;
--
--    upfuncs[0][1] =
--        wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1v2_triangle;
--    upfuncs[1][0] =
--        wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v1_triangle;
--    upfuncs[1][1] =
--        wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v2_triangle;
--
--#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
--#if defined(__GNUC__) && !defined(__clang__)
--    // Don't use our AVX2 implementation for GCC (but do use it for clang). For
--    // some unknown reason, GCC performs noticably better on the non-SIMD
--    // version. Possibly because GCC's auto-vectorizer is smarter (just with
--    // SSE2, not AVX2) than our hand-written code, but that's just a guess.
--    //
--    // See commits 51bc60ef9298cb2efc1b29a9681191f66d49820d and
--    // cd769a0cdf1b5affee13f6089b995f3d39569cb4 for benchmark numbers.
--    //
--    // See also https://godbolt.org/z/MbhbPGEz4 for Debian Bullseye's clang 11
--    // versus gcc 10, where only gcc auto-vectorizes, although later clang
--    // versions will also auto-vectorize.
--#else
--    if (wuffs_base__cpu_arch__have_x86_avx2()) {
--      upfuncs[1][1] =
--          wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v2_triangle_x86_avx2;
--    }
--#endif
--#endif
--  }
-+static uint64_t  //
-+wuffs_private_impl__swizzle_xxxx__y_16be(uint8_t* dst_ptr,
-+                                         size_t dst_len,
-+                                         uint8_t* dst_palette_ptr,
-+                                         size_t dst_palette_len,
-+                                         const uint8_t* src_ptr,
-+                                         size_t src_len) {
-+  size_t dst_len4 = dst_len / 4;
-+  size_t src_len2 = src_len / 2;
-+  size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--  if ((h3 != 0u) || (v3 != 0u)) {
--    wuffs_base__pixel_swizzler__swizzle_ycc__convert_4_func conv4func =
--        is_rgb_or_cmyk
--            ? &wuffs_base__pixel_swizzler__swizzle_cmyk__convert_4_general
--            : &wuffs_base__pixel_swizzler__swizzle_ycck__convert_4_general;
--    wuffs_base__pixel_swizzler__swizzle_ycck__general__triangle_filter(  //
--        dst, width, height,                                              //
--        src0.ptr, src1.ptr, src2.ptr, src3.ptr,                          //
--        stride0, stride1, stride2, stride3,                              //
--        inv_h0, inv_h1, inv_h2, inv_h3,                                  //
--        inv_v0, inv_v1, inv_v2, inv_v3,                                  //
--        half_width_for_2to1, half_height_for_2to1,                       //
--        scratch_buffer_2k.ptr, &upfuncs, conv4func);
-+  while (n >= 1) {
-+    wuffs_base__poke_u32le__no_bounds_check(
-+        d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0]));
- 
--  } else {
--    (*func)(                                        //
--        dst, width, height,                         //
--        src0.ptr, src1.ptr, src2.ptr,               //
--        stride0, stride1, stride2,                  //
--        inv_h0, inv_h1, inv_h2,                     //
--        inv_v0, inv_v1, inv_v2,                     //
--        half_width_for_2to1, half_height_for_2to1,  //
--        scratch_buffer_2k.ptr, &upfuncs, conv3func);
-+    s += 1 * 2;
-+    d += 1 * 4;
-+    n -= 1;
-   }
- 
--  return wuffs_base__make_status(NULL);
-+  return len;
- }
- 
- // --------
- 
--// ‼ WUFFS MULTI-FILE SECTION +x86_avx2
--#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
--WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
--static void  //
--wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_bgrx_x86_avx2(
--    wuffs_base__pixel_buffer* dst,
--    uint32_t x,
--    uint32_t x_end,
--    uint32_t y,
--    const uint8_t* up0,
--    const uint8_t* up1,
--    const uint8_t* up2) {
--  if ((x + 32u) > x_end) {
--    wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_bgrx(  //
--        dst, x, x_end, y, up0, up1, up2);
--    return;
-+static uint64_t  //
-+wuffs_private_impl__swizzle_xxxxxxxx__index__src(uint8_t* dst_ptr,
-+                                                 size_t dst_len,
-+                                                 uint8_t* dst_palette_ptr,
-+                                                 size_t dst_palette_len,
-+                                                 const uint8_t* src_ptr,
-+                                                 size_t src_len) {
-+  if (dst_palette_len !=
-+      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-+    return 0;
-   }
-+  size_t dst_len8 = dst_len / 8;
-+  size_t len = (dst_len8 < src_len) ? dst_len8 : src_len;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--  size_t dst_stride = dst->private_impl.planes[0].stride;
--  uint8_t* dst_iter = dst->private_impl.planes[0].ptr +
--                      (dst_stride * ((size_t)y)) + (4u * ((size_t)x));
--
--  // u0001 = u16x16 [0x0001 .. 0x0001]
--  // u00FF = u16x16 [0x00FF .. 0x00FF]
--  // uFF80 = u16x16 [0xFF80 .. 0xFF80]
--  // uFFFF = u16x16 [0xFFFF .. 0xFFFF]
--  const __m256i u0001 = _mm256_set1_epi16(+0x0001);
--  const __m256i u00FF = _mm256_set1_epi16(+0x00FF);
--  const __m256i uFF80 = _mm256_set1_epi16(-0x0080);
--  const __m256i uFFFF = _mm256_set1_epi16(-0x0001);
-+  while (n >= 1) {
-+    wuffs_base__poke_u64le__no_bounds_check(
-+        d + (0 * 8), wuffs_base__color_u32__as__color_u64(
-+                         wuffs_base__peek_u32le__no_bounds_check(
-+                             dst_palette_ptr + ((size_t)s[0] * 4))));
- 
--  // p8000_p0000 = u16x16 [0x8000 0x0000 .. 0x8000 0x0000]
--  const __m256i p8000_p0000 = _mm256_set_epi16(  //
--      +0x0000, -0x8000, +0x0000, -0x8000,        //
--      +0x0000, -0x8000, +0x0000, -0x8000,        //
--      +0x0000, -0x8000, +0x0000, -0x8000,        //
--      +0x0000, -0x8000, +0x0000, -0x8000);
-+    s += 1 * 1;
-+    d += 1 * 8;
-+    n -= 1;
-+  }
- 
--  // Per wuffs_base__color_ycc__as__color_u32, the formulae:
--  //
--  //  R = Y                + 1.40200 * Cr
--  //  G = Y - 0.34414 * Cb - 0.71414 * Cr
--  //  B = Y + 1.77200 * Cb
--  //
--  // When scaled by 1<<16:
--  //
--  //  0.34414 becomes 0x0581A =  22554.
--  //  0.71414 becomes 0x0B6D2 =  46802.
--  //  1.40200 becomes 0x166E9 =  91881.
--  //  1.77200 becomes 0x1C5A2 = 116130.
--  //
--  // Separate the integer and fractional parts, since we work with signed
--  // 16-bit SIMD lanes. The fractional parts range from -0.5 .. +0.5 (as
--  // floating-point) which is from -0x8000 .. +0x8000 (as fixed-point).
--  //
--  //  -0x3A5E = -0x20000 + 0x1C5A2     The B:Cb factor.
--  //  +0x66E9 = -0x10000 + 0x166E9     The R:Cr factor.
--  //  -0x581A = +0x00000 - 0x0581A     The G:Cb factor.
--  //  +0x492E = +0x10000 - 0x0B6D2     The G:Cr factor.
--  const __m256i m3A5E = _mm256_set1_epi16(-0x3A5E);
--  const __m256i p66E9 = _mm256_set1_epi16(+0x66E9);
--  const __m256i m581A_p492E = _mm256_set_epi16(  //
--      +0x492E, -0x581A, +0x492E, -0x581A,        //
--      +0x492E, -0x581A, +0x492E, -0x581A,        //
--      +0x492E, -0x581A, +0x492E, -0x581A,        //
--      +0x492E, -0x581A, +0x492E, -0x581A);
-+  return len;
-+}
- 
--  while (x < x_end) {
--    // Load chroma values in even and odd columns (the high 8 bits of each
--    // u16x16 element are zero) and then subtract 0x0080.
--    //
--    // cb_all = u8x32  [cb.00 cb.01 cb.02 cb.03 .. cb.1C cb.1D cb.1E cb.1F]
--    // cb_eve = i16x16 [cb.00-0x80  cb.02-0x80  .. cb.1C-0x80  cb.1E-0x80 ]
--    // cb_odd = i16x16 [cb.01-0x80  cb.03-0x80  .. cb.1D-0x80  cb.1F-0x80 ]
--    //
--    // Ditto for the cr_xxx Chroma-Red values.
--    __m256i cb_all = _mm256_lddqu_si256((const __m256i*)(const void*)up1);
--    __m256i cr_all = _mm256_lddqu_si256((const __m256i*)(const void*)up2);
--    __m256i cb_eve = _mm256_add_epi16(uFF80, _mm256_and_si256(cb_all, u00FF));
--    __m256i cr_eve = _mm256_add_epi16(uFF80, _mm256_and_si256(cr_all, u00FF));
--    __m256i cb_odd = _mm256_add_epi16(uFF80, _mm256_srli_epi16(cb_all, 8));
--    __m256i cr_odd = _mm256_add_epi16(uFF80, _mm256_srli_epi16(cr_all, 8));
-+static uint64_t  //
-+wuffs_private_impl__swizzle_xxxxxxxx__index_binary_alpha__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  if (dst_palette_len !=
-+      WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-+    return 0;
-+  }
-+  size_t dst_len8 = dst_len / 8;
-+  size_t len = (dst_len8 < src_len) ? dst_len8 : src_len;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    // ----
-+  while (n >= 1) {
-+    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
-+                                                          ((size_t)s[0] * 4));
-+    if (s0) {
-+      wuffs_base__poke_u64le__no_bounds_check(
-+          d + (0 * 8), wuffs_base__color_u32__as__color_u64(s0));
-+    }
- 
--    // Calculate:
--    //
--    //  B-Y = (+1.77200 * Cb)                 as floating-point
--    //  R-Y = (+1.40200 * Cr)                 as floating-point
--    //
--    //  B-Y = ((0x2_0000 - 0x3A5E) * Cb)      as fixed-point
--    //  R-Y = ((0x1_0000 + 0x66E9) * Cr)      as fixed-point
--    //
--    //  B-Y = ((-0x3A5E * Cb) + ("2.0" * Cb))
--    //  R-Y = ((+0x66E9 * Cr) + ("1.0" * Cr))
-+    s += 1 * 1;
-+    d += 1 * 8;
-+    n -= 1;
-+  }
- 
--    // Multiply by m3A5E or p66E9, taking the high 16 bits. There's also a
--    // doubling (add x to itself), adding-of-1 and halving (shift right by 1).
--    // That makes multiply-and-take-high round to nearest (instead of down).
--    __m256i tmp_by_eve = _mm256_srai_epi16(
--        _mm256_add_epi16(
--            _mm256_mulhi_epi16(_mm256_add_epi16(cb_eve, cb_eve), m3A5E), u0001),
--        1);
--    __m256i tmp_by_odd = _mm256_srai_epi16(
--        _mm256_add_epi16(
--            _mm256_mulhi_epi16(_mm256_add_epi16(cb_odd, cb_odd), m3A5E), u0001),
--        1);
--    __m256i tmp_ry_eve = _mm256_srai_epi16(
--        _mm256_add_epi16(
--            _mm256_mulhi_epi16(_mm256_add_epi16(cr_eve, cr_eve), p66E9), u0001),
--        1);
--    __m256i tmp_ry_odd = _mm256_srai_epi16(
--        _mm256_add_epi16(
--            _mm256_mulhi_epi16(_mm256_add_epi16(cr_odd, cr_odd), p66E9), u0001),
--        1);
-+  return len;
-+}
- 
--    // Add (2 * Cb) and (1 * Cr).
--    __m256i by_eve =
--        _mm256_add_epi16(tmp_by_eve, _mm256_add_epi16(cb_eve, cb_eve));
--    __m256i by_odd =
--        _mm256_add_epi16(tmp_by_odd, _mm256_add_epi16(cb_odd, cb_odd));
--    __m256i ry_eve = _mm256_add_epi16(tmp_ry_eve, cr_eve);
--    __m256i ry_odd = _mm256_add_epi16(tmp_ry_odd, cr_odd);
-+static uint64_t  //
-+wuffs_private_impl__swizzle_xxxxxxxx__y(uint8_t* dst_ptr,
-+                                        size_t dst_len,
-+                                        uint8_t* dst_palette_ptr,
-+                                        size_t dst_palette_len,
-+                                        const uint8_t* src_ptr,
-+                                        size_t src_len) {
-+  size_t dst_len8 = dst_len / 8;
-+  size_t len = (dst_len8 < src_len) ? dst_len8 : src_len;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    // ----
-+  while (n >= 1) {
-+    wuffs_base__poke_u64le__no_bounds_check(
-+        d + (0 * 8), 0xFFFF000000000000 | (0x010101010101 * (uint64_t)s[0]));
- 
--    // Calculate:
--    //
--    //  G-Y = (-0.34414 * Cb) +
--    //        (-0.71414 * Cr)                 as floating-point
--    //
--    //  G-Y = ((+0x0_0000 - 0x581A) * Cb) +
--    //        ((-0x1_0000 + 0x492E) * Cr)     as fixed-point
--    //
--    //  G-Y =  (-0x581A * Cb) +
--    //         (+0x492E * Cr) - ("1.0" * Cr)
-+    s += 1 * 1;
-+    d += 1 * 8;
-+    n -= 1;
-+  }
- 
--    // Multiply-add to get ((-0x581A * Cb) + (+0x492E * Cr)).
--    __m256i tmp0_gy_eve_lo = _mm256_madd_epi16(  //
--        _mm256_unpacklo_epi16(cb_eve, cr_eve), m581A_p492E);
--    __m256i tmp0_gy_eve_hi = _mm256_madd_epi16(  //
--        _mm256_unpackhi_epi16(cb_eve, cr_eve), m581A_p492E);
--    __m256i tmp0_gy_odd_lo = _mm256_madd_epi16(  //
--        _mm256_unpacklo_epi16(cb_odd, cr_odd), m581A_p492E);
--    __m256i tmp0_gy_odd_hi = _mm256_madd_epi16(  //
--        _mm256_unpackhi_epi16(cb_odd, cr_odd), m581A_p492E);
-+  return len;
-+}
- 
--    // Divide the i32x8 vectors by (1 << 16), rounding to nearest.
--    __m256i tmp1_gy_eve_lo =
--        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_eve_lo, p8000_p0000), 16);
--    __m256i tmp1_gy_eve_hi =
--        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_eve_hi, p8000_p0000), 16);
--    __m256i tmp1_gy_odd_lo =
--        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_odd_lo, p8000_p0000), 16);
--    __m256i tmp1_gy_odd_hi =
--        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_odd_hi, p8000_p0000), 16);
-+static uint64_t  //
-+wuffs_private_impl__swizzle_xxxxxxxx__y_16be(uint8_t* dst_ptr,
-+                                             size_t dst_len,
-+                                             uint8_t* dst_palette_ptr,
-+                                             size_t dst_palette_len,
-+                                             const uint8_t* src_ptr,
-+                                             size_t src_len) {
-+  size_t dst_len8 = dst_len / 8;
-+  size_t src_len2 = src_len / 2;
-+  size_t len = (dst_len8 < src_len2) ? dst_len8 : src_len2;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    // Pack the ((-0x581A * Cb) + (+0x492E * Cr)) as i16x16 and subtract Cr.
--    __m256i gy_eve = _mm256_sub_epi16(
--        _mm256_packs_epi32(tmp1_gy_eve_lo, tmp1_gy_eve_hi), cr_eve);
--    __m256i gy_odd = _mm256_sub_epi16(
--        _mm256_packs_epi32(tmp1_gy_odd_lo, tmp1_gy_odd_hi), cr_odd);
-+  while (n >= 1) {
-+    uint64_t s0 =
-+        ((uint64_t)(wuffs_base__peek_u16be__no_bounds_check(s + (0 * 2))));
-+    wuffs_base__poke_u64le__no_bounds_check(
-+        d + (0 * 8), 0xFFFF000000000000 | (0x000100010001 * s0));
- 
--    // ----
-+    s += 1 * 2;
-+    d += 1 * 8;
-+    n -= 1;
-+  }
- 
--    // Add Y to (B-Y), (G-Y) and (R-Y) to produce B, G and R.
--    //
--    // For the resultant packed_x_xxx vectors, only elements 0 ..= 7 and 16 ..=
--    // 23 of the 32-element vectors matter (since we'll unpacklo but not
--    // unpackhi them). Let … denote 8 ignored consecutive u8 values and let %
--    // denote 0xFF. We'll end this section with:
--    //
--    // packed_b_eve = u8x32 [b00 b02 .. b0C b0E  …  b10 b12 .. b1C b1E  …]
--    // packed_b_odd = u8x32 [b01 b03 .. b0D b0F  …  b11 b13 .. b1D b1F  …]
--    // packed_g_eve = u8x32 [g00 g02 .. g0C g0E  …  g10 g12 .. g1C g1E  …]
--    // packed_g_odd = u8x32 [g01 g03 .. g0D g0F  …  g11 g13 .. g1D g1F  …]
--    // packed_r_eve = u8x32 [r00 r02 .. r0C r0E  …  r10 r12 .. r1C r1E  …]
--    // packed_r_odd = u8x32 [r01 r03 .. r0D r0F  …  r11 r13 .. r1D r1F  …]
--    // uFFFF        = u8x32 [  %   % ..   %   %  …    %   % ..   %   %  …]
-+  return len;
-+}
- 
--    __m256i yy_all = _mm256_lddqu_si256((const __m256i*)(const void*)up0);
--    __m256i yy_eve = _mm256_and_si256(yy_all, u00FF);
--    __m256i yy_odd = _mm256_srli_epi16(yy_all, 8);
-+// --------
- 
--    __m256i loose_b_eve = _mm256_add_epi16(by_eve, yy_eve);
--    __m256i loose_b_odd = _mm256_add_epi16(by_odd, yy_odd);
--    __m256i packed_b_eve = _mm256_packus_epi16(loose_b_eve, loose_b_eve);
--    __m256i packed_b_odd = _mm256_packus_epi16(loose_b_odd, loose_b_odd);
-+static uint64_t  //
-+wuffs_private_impl__swizzle_y__bgra_nonpremul__src(uint8_t* dst_ptr,
-+                                                   size_t dst_len,
-+                                                   uint8_t* dst_palette_ptr,
-+                                                   size_t dst_palette_len,
-+                                                   const uint8_t* src_ptr,
-+                                                   size_t src_len) {
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len < src_len4) ? dst_len : src_len4;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    __m256i loose_g_eve = _mm256_add_epi16(gy_eve, yy_eve);
--    __m256i loose_g_odd = _mm256_add_epi16(gy_odd, yy_odd);
--    __m256i packed_g_eve = _mm256_packus_epi16(loose_g_eve, loose_g_eve);
--    __m256i packed_g_odd = _mm256_packus_epi16(loose_g_odd, loose_g_odd);
-+  while (n >= 1) {
-+    uint32_t s0 =
-+        wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
-+            wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
-+    d[0] = wuffs_base__color_u32_argb_premul__as__color_u8_gray(s0);
- 
--    __m256i loose_r_eve = _mm256_add_epi16(ry_eve, yy_eve);
--    __m256i loose_r_odd = _mm256_add_epi16(ry_odd, yy_odd);
--    __m256i packed_r_eve = _mm256_packus_epi16(loose_r_eve, loose_r_eve);
--    __m256i packed_r_odd = _mm256_packus_epi16(loose_r_odd, loose_r_odd);
-+    s += 1 * 4;
-+    d += 1 * 1;
-+    n -= 1;
-+  }
- 
--    // ----
-+  return len;
-+}
- 
--    // Mix those values (unpacking in 8, 16 and then 32 bit units) to get the
--    // desired BGRX/RGBX order.
--    //
--    // From here onwards, all of our __m256i registers are u8x32.
-+static uint64_t  //
-+wuffs_private_impl__swizzle_y__bgra_nonpremul__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len < src_len4) ? dst_len : src_len4;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    // mix00 = [b00 g00 b02 g02 .. b0E g0E b10 g10 .. b1C g1C b1E g1E]
--    // mix01 = [b01 g01 b03 g03 .. b0F g0F b11 g11 .. b1D g1D b1F g1F]
--    // mix02 = [r00   % r02   % .. r0E   % r10   % .. r1C   % r1E   %]
--    // mix03 = [r01   % r03   % .. r0F   % r11   % .. r1D   % r1F   %]
--    //
--    // See also § below.
--    __m256i mix00 = _mm256_unpacklo_epi8(packed_b_eve, packed_g_eve);
--    __m256i mix01 = _mm256_unpacklo_epi8(packed_b_odd, packed_g_odd);
--    __m256i mix02 = _mm256_unpacklo_epi8(packed_r_eve, uFFFF);
--    __m256i mix03 = _mm256_unpacklo_epi8(packed_r_odd, uFFFF);
-+  while (n >= 1) {
-+    uint32_t d0 = 0xFF000000 | (0x00010101 * ((uint32_t)(d[0])));
-+    uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
-+    d[0] = wuffs_base__color_u32_argb_premul__as__color_u8_gray(
-+        wuffs_private_impl__composite_premul_nonpremul_u32_axxx(d0, s0));
- 
--    // mix10 = [b00 g00 r00 %  b02 g02 r02 %  b04 g04 r04 %  b06 g06 r06 %
--    //          b10 g10 r10 %  b12 g12 r12 %  b14 g14 r14 %  b16 g16 r16 %]
--    // mix11 = [b01 g01 r01 %  b03 g03 r03 %  b05 g05 r05 %  b07 g07 r07 %
--    //          b11 g11 r11 %  b13 g13 r13 %  b15 g15 r15 %  b17 g17 r17 %]
--    // mix12 = [b08 g08 r08 %  b0A g0A r0A %  b0C g0C r0C %  b0E g0E r0E %
--    //          b18 g18 r18 %  b1A g1A r1A %  b1C g1C r1C %  b1E g1E r1E %]
--    // mix13 = [b09 g09 r09 %  b0B g0B r0B %  b0D g0D r0D %  b0F g0F r0F %
--    //          b19 g19 r19 %  b1B g1B r1B %  b1D g1D r1D %  b1F g1F r1F %]
--    __m256i mix10 = _mm256_unpacklo_epi16(mix00, mix02);
--    __m256i mix11 = _mm256_unpacklo_epi16(mix01, mix03);
--    __m256i mix12 = _mm256_unpackhi_epi16(mix00, mix02);
--    __m256i mix13 = _mm256_unpackhi_epi16(mix01, mix03);
-+    s += 1 * 4;
-+    d += 1 * 1;
-+    n -= 1;
-+  }
- 
--    // mix20 = [b00 g00 r00 %  b01 g01 r01 %  b02 g02 r02 %  b03 g03 r03 %
--    //          b10 g10 r10 %  b11 g11 r11 %  b12 g12 r12 %  b13 g13 r13 %]
--    // mix21 = [b04 g04 r04 %  b05 g05 r05 %  b06 g06 r06 %  b07 g07 r07 %
--    //          b14 g14 r14 %  b15 g15 r15 %  b16 g16 r16 %  b17 g17 r17 %]
--    // mix22 = [b08 g08 r08 %  b09 g09 r09 %  b0A g0A r0A %  b0B g0B r0B %
--    //          b18 g18 r18 %  b19 g19 r19 %  b1A g1A r1A %  b1B g1B r1B %]
--    // mix23 = [b0C g0C r0C %  b0D g0D r0D %  b0E g0E r0E %  b0F g0F r0F %
--    //          b1C g1C r1C %  b1D g1D r1D %  b1E g1E r1E %  b1F g1F r1F %]
--    __m256i mix20 = _mm256_unpacklo_epi32(mix10, mix11);
--    __m256i mix21 = _mm256_unpackhi_epi32(mix10, mix11);
--    __m256i mix22 = _mm256_unpacklo_epi32(mix12, mix13);
--    __m256i mix23 = _mm256_unpackhi_epi32(mix12, mix13);
-+  return len;
-+}
- 
--    // mix30 = [b00 g00 r00 %  b01 g01 r01 %  b02 g02 r02 %  b03 g03 r03 %
--    //          b04 g04 r04 %  b05 g05 r05 %  b06 g06 r06 %  b07 g07 r07 %]
--    // mix31 = [b08 g08 r08 %  b09 g09 r09 %  b0A g0A r0A %  b0B g0B r0B %
--    //          b0C g0C r0C %  b0D g0D r0D %  b0E g0E r0E %  b0F g0F r0F %]
--    // mix32 = [b10 g10 r10 %  b11 g11 r11 %  b12 g12 r12 %  b13 g13 r13 %
--    //          b14 g14 r14 %  b15 g15 r15 %  b16 g16 r16 %  b17 g17 r17 %]
--    // mix33 = [b18 g18 r18 %  b19 g19 r19 %  b1A g1A r1A %  b1B g1B r1B %
--    //          b1C g1C r1C %  b1D g1D r1D %  b1E g1E r1E %  b1F g1F r1F %]
--    __m256i mix30 = _mm256_permute2x128_si256(mix20, mix21, 0x20);
--    __m256i mix31 = _mm256_permute2x128_si256(mix22, mix23, 0x20);
--    __m256i mix32 = _mm256_permute2x128_si256(mix20, mix21, 0x31);
--    __m256i mix33 = _mm256_permute2x128_si256(mix22, mix23, 0x31);
-+static uint64_t  //
-+wuffs_private_impl__swizzle_y__bgrx(uint8_t* dst_ptr,
-+                                    size_t dst_len,
-+                                    uint8_t* dst_palette_ptr,
-+                                    size_t dst_palette_len,
-+                                    const uint8_t* src_ptr,
-+                                    size_t src_len) {
-+  size_t src_len4 = src_len / 4;
-+  size_t len = (dst_len < src_len4) ? dst_len : src_len4;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    // Write out four u8x32 SIMD registers (128 bytes, 32 BGRX/RGBX pixels).
--    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x00), mix30);
--    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x20), mix31);
--    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x40), mix32);
--    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x60), mix33);
-+  while (n >= 1) {
-+    uint32_t s0 =
-+        0xFF000000 | wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
-+    d[0] = wuffs_base__color_u32_argb_premul__as__color_u8_gray(s0);
- 
--    // Advance by up to 32 pixels. The first iteration might be smaller than 32
--    // so that all of the remaining steps are exactly 32.
--    uint32_t n = 32u - (31u & (x - x_end));
--    dst_iter += 4u * n;
--    up0 += n;
--    up1 += n;
--    up2 += n;
--    x += n;
-+    s += 1 * 4;
-+    d += 1 * 1;
-+    n -= 1;
-   }
-+
-+  return len;
- }
- 
--// The rgbx flavor (below) is exactly the same as the bgrx flavor (above)
--// except for the lines marked with a § and that comments were stripped.
--WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
--static void  //
--wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_rgbx_x86_avx2(
--    wuffs_base__pixel_buffer* dst,
--    uint32_t x,
--    uint32_t x_end,
--    uint32_t y,
--    const uint8_t* up0,
--    const uint8_t* up1,
--    const uint8_t* up2) {
--  if ((x + 32u) > x_end) {
--    wuffs_base__pixel_swizzler__swizzle_ycc__convert_3_bgrx(  //
--        dst, x, x_end, y, up0, up1, up2);
--    return;
--  }
-+static uint64_t  //
-+wuffs_private_impl__swizzle_y__y_16be(uint8_t* dst_ptr,
-+                                      size_t dst_len,
-+                                      uint8_t* dst_palette_ptr,
-+                                      size_t dst_palette_len,
-+                                      const uint8_t* src_ptr,
-+                                      size_t src_len) {
-+  size_t src_len2 = src_len / 2;
-+  size_t len = (dst_len < src_len2) ? dst_len : src_len2;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--  size_t dst_stride = dst->private_impl.planes[0].stride;
--  uint8_t* dst_iter = dst->private_impl.planes[0].ptr +
--                      (dst_stride * ((size_t)y)) + (4u * ((size_t)x));
-+  while (n >= 1) {
-+    d[0] = s[0];
- 
--  const __m256i u0001 = _mm256_set1_epi16(+0x0001);
--  const __m256i u00FF = _mm256_set1_epi16(+0x00FF);
--  const __m256i uFF80 = _mm256_set1_epi16(-0x0080);
--  const __m256i uFFFF = _mm256_set1_epi16(-0x0001);
-+    s += 1 * 2;
-+    d += 1 * 1;
-+    n -= 1;
-+  }
- 
--  const __m256i p8000_p0000 = _mm256_set_epi16(  //
--      +0x0000, -0x8000, +0x0000, -0x8000,        //
--      +0x0000, -0x8000, +0x0000, -0x8000,        //
--      +0x0000, -0x8000, +0x0000, -0x8000,        //
--      +0x0000, -0x8000, +0x0000, -0x8000);
-+  return len;
-+}
- 
--  const __m256i m3A5E = _mm256_set1_epi16(-0x3A5E);
--  const __m256i p66E9 = _mm256_set1_epi16(+0x66E9);
--  const __m256i m581A_p492E = _mm256_set_epi16(  //
--      +0x492E, -0x581A, +0x492E, -0x581A,        //
--      +0x492E, -0x581A, +0x492E, -0x581A,        //
--      +0x492E, -0x581A, +0x492E, -0x581A,        //
--      +0x492E, -0x581A, +0x492E, -0x581A);
-+static uint64_t  //
-+wuffs_private_impl__swizzle_y_16le__y_16be(uint8_t* dst_ptr,
-+                                           size_t dst_len,
-+                                           uint8_t* dst_palette_ptr,
-+                                           size_t dst_palette_len,
-+                                           const uint8_t* src_ptr,
-+                                           size_t src_len) {
-+  size_t dst_len2 = dst_len / 2;
-+  size_t src_len2 = src_len / 2;
-+  size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--  while (x < x_end) {
--    __m256i cb_all = _mm256_lddqu_si256((const __m256i*)(const void*)up1);
--    __m256i cr_all = _mm256_lddqu_si256((const __m256i*)(const void*)up2);
--    __m256i cb_eve = _mm256_add_epi16(uFF80, _mm256_and_si256(cb_all, u00FF));
--    __m256i cr_eve = _mm256_add_epi16(uFF80, _mm256_and_si256(cr_all, u00FF));
--    __m256i cb_odd = _mm256_add_epi16(uFF80, _mm256_srli_epi16(cb_all, 8));
--    __m256i cr_odd = _mm256_add_epi16(uFF80, _mm256_srli_epi16(cr_all, 8));
-+  while (n >= 1) {
-+    uint8_t s0 = s[0];
-+    uint8_t s1 = s[1];
-+    d[0] = s1;
-+    d[1] = s0;
- 
--    __m256i tmp_by_eve = _mm256_srai_epi16(
--        _mm256_add_epi16(
--            _mm256_mulhi_epi16(_mm256_add_epi16(cb_eve, cb_eve), m3A5E), u0001),
--        1);
--    __m256i tmp_by_odd = _mm256_srai_epi16(
--        _mm256_add_epi16(
--            _mm256_mulhi_epi16(_mm256_add_epi16(cb_odd, cb_odd), m3A5E), u0001),
--        1);
--    __m256i tmp_ry_eve = _mm256_srai_epi16(
--        _mm256_add_epi16(
--            _mm256_mulhi_epi16(_mm256_add_epi16(cr_eve, cr_eve), p66E9), u0001),
--        1);
--    __m256i tmp_ry_odd = _mm256_srai_epi16(
--        _mm256_add_epi16(
--            _mm256_mulhi_epi16(_mm256_add_epi16(cr_odd, cr_odd), p66E9), u0001),
--        1);
-+    s += 1 * 2;
-+    d += 1 * 2;
-+    n -= 1;
-+  }
- 
--    __m256i by_eve =
--        _mm256_add_epi16(tmp_by_eve, _mm256_add_epi16(cb_eve, cb_eve));
--    __m256i by_odd =
--        _mm256_add_epi16(tmp_by_odd, _mm256_add_epi16(cb_odd, cb_odd));
--    __m256i ry_eve = _mm256_add_epi16(tmp_ry_eve, cr_eve);
--    __m256i ry_odd = _mm256_add_epi16(tmp_ry_odd, cr_odd);
-+  return len;
-+}
- 
--    __m256i tmp0_gy_eve_lo = _mm256_madd_epi16(  //
--        _mm256_unpacklo_epi16(cb_eve, cr_eve), m581A_p492E);
--    __m256i tmp0_gy_eve_hi = _mm256_madd_epi16(  //
--        _mm256_unpackhi_epi16(cb_eve, cr_eve), m581A_p492E);
--    __m256i tmp0_gy_odd_lo = _mm256_madd_epi16(  //
--        _mm256_unpacklo_epi16(cb_odd, cr_odd), m581A_p492E);
--    __m256i tmp0_gy_odd_hi = _mm256_madd_epi16(  //
--        _mm256_unpackhi_epi16(cb_odd, cr_odd), m581A_p492E);
-+// --------
- 
--    __m256i tmp1_gy_eve_lo =
--        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_eve_lo, p8000_p0000), 16);
--    __m256i tmp1_gy_eve_hi =
--        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_eve_hi, p8000_p0000), 16);
--    __m256i tmp1_gy_odd_lo =
--        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_odd_lo, p8000_p0000), 16);
--    __m256i tmp1_gy_odd_hi =
--        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_odd_hi, p8000_p0000), 16);
-+static uint64_t  //
-+wuffs_private_impl__swizzle_ya_nonpremul__ya_nonpremul__src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    const uint8_t* src_ptr,
-+    size_t src_len) {
-+  size_t dst_len2 = dst_len / 2;
-+  size_t src_len2 = src_len / 2;
-+  size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2;
-+  uint8_t* d = dst_ptr;
-+  const uint8_t* s = src_ptr;
-+  size_t n = len;
- 
--    __m256i gy_eve = _mm256_sub_epi16(
--        _mm256_packs_epi32(tmp1_gy_eve_lo, tmp1_gy_eve_hi), cr_eve);
--    __m256i gy_odd = _mm256_sub_epi16(
--        _mm256_packs_epi32(tmp1_gy_odd_lo, tmp1_gy_odd_hi), cr_odd);
-+  while (n >= 1) {
-+    uint32_t d0 = ((uint32_t)(d[1]) << 24) | ((uint32_t)(d[0]) * 0x010101);
-+    uint32_t s0 = ((uint32_t)(s[1]) << 24) | ((uint32_t)(s[0]) * 0x010101);
-+    uint32_t c0 =
-+        wuffs_private_impl__composite_nonpremul_nonpremul_u32_axxx(d0, s0);
-+    wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)(c0 >> 16));
- 
--    __m256i yy_all = _mm256_lddqu_si256((const __m256i*)(const void*)up0);
--    __m256i yy_eve = _mm256_and_si256(yy_all, u00FF);
--    __m256i yy_odd = _mm256_srli_epi16(yy_all, 8);
-+    s += 1 * 2;
-+    d += 1 * 2;
-+    n -= 1;
-+  }
- 
--    __m256i loose_b_eve = _mm256_add_epi16(by_eve, yy_eve);
--    __m256i loose_b_odd = _mm256_add_epi16(by_odd, yy_odd);
--    __m256i packed_b_eve = _mm256_packus_epi16(loose_b_eve, loose_b_eve);
--    __m256i packed_b_odd = _mm256_packus_epi16(loose_b_odd, loose_b_odd);
-+  return len;
-+}
- 
--    __m256i loose_g_eve = _mm256_add_epi16(gy_eve, yy_eve);
--    __m256i loose_g_odd = _mm256_add_epi16(gy_odd, yy_odd);
--    __m256i packed_g_eve = _mm256_packus_epi16(loose_g_eve, loose_g_eve);
--    __m256i packed_g_odd = _mm256_packus_epi16(loose_g_odd, loose_g_odd);
-+// --------
- 
--    __m256i loose_r_eve = _mm256_add_epi16(ry_eve, yy_eve);
--    __m256i loose_r_odd = _mm256_add_epi16(ry_odd, yy_odd);
--    __m256i packed_r_eve = _mm256_packus_epi16(loose_r_eve, loose_r_eve);
--    __m256i packed_r_odd = _mm256_packus_epi16(loose_r_odd, loose_r_odd);
-+static uint64_t  //
-+wuffs_private_impl__swizzle_transparent_black_src(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    uint64_t num_pixels,
-+    uint32_t dst_pixfmt_bytes_per_pixel) {
-+  uint64_t n = ((uint64_t)dst_len) / dst_pixfmt_bytes_per_pixel;
-+  if (n > num_pixels) {
-+    n = num_pixels;
-+  }
-+  memset(dst_ptr, 0, ((size_t)(n * dst_pixfmt_bytes_per_pixel)));
-+  return n;
-+}
- 
--    // § Note the swapped B and R channels.
--    __m256i mix00 = _mm256_unpacklo_epi8(packed_r_eve, packed_g_eve);
--    __m256i mix01 = _mm256_unpacklo_epi8(packed_r_odd, packed_g_odd);
--    __m256i mix02 = _mm256_unpacklo_epi8(packed_b_eve, uFFFF);
--    __m256i mix03 = _mm256_unpacklo_epi8(packed_b_odd, uFFFF);
-+static uint64_t  //
-+wuffs_private_impl__swizzle_transparent_black_src_over(
-+    uint8_t* dst_ptr,
-+    size_t dst_len,
-+    uint8_t* dst_palette_ptr,
-+    size_t dst_palette_len,
-+    uint64_t num_pixels,
-+    uint32_t dst_pixfmt_bytes_per_pixel) {
-+  uint64_t n = ((uint64_t)dst_len) / dst_pixfmt_bytes_per_pixel;
-+  if (n > num_pixels) {
-+    n = num_pixels;
-+  }
-+  return n;
-+}
- 
--    __m256i mix10 = _mm256_unpacklo_epi16(mix00, mix02);
--    __m256i mix11 = _mm256_unpacklo_epi16(mix01, mix03);
--    __m256i mix12 = _mm256_unpackhi_epi16(mix00, mix02);
--    __m256i mix13 = _mm256_unpackhi_epi16(mix01, mix03);
-+// --------
- 
--    __m256i mix20 = _mm256_unpacklo_epi32(mix10, mix11);
--    __m256i mix21 = _mm256_unpackhi_epi32(mix10, mix11);
--    __m256i mix22 = _mm256_unpacklo_epi32(mix12, mix13);
--    __m256i mix23 = _mm256_unpackhi_epi32(mix12, mix13);
-+static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
-+wuffs_private_impl__pixel_swizzler__prepare__y(
-+    wuffs_base__pixel_swizzler* p,
-+    wuffs_base__pixel_format dst_pixfmt,
-+    wuffs_base__slice_u8 dst_palette,
-+    wuffs_base__slice_u8 src_palette,
-+    wuffs_base__pixel_blend blend) {
-+  switch (dst_pixfmt.repr) {
-+    case WUFFS_BASE__PIXEL_FORMAT__Y:
-+      return wuffs_private_impl__swizzle_copy_1_1;
- 
--    __m256i mix30 = _mm256_permute2x128_si256(mix20, mix21, 0x20);
--    __m256i mix31 = _mm256_permute2x128_si256(mix22, mix23, 0x20);
--    __m256i mix32 = _mm256_permute2x128_si256(mix20, mix21, 0x31);
--    __m256i mix33 = _mm256_permute2x128_si256(mix22, mix23, 0x31);
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
-+      return wuffs_private_impl__swizzle_bgr_565__y;
- 
--    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x00), mix30);
--    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x20), mix31);
--    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x40), mix32);
--    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x60), mix33);
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGB:
-+      return wuffs_private_impl__swizzle_xxx__y;
- 
--    uint32_t n = 32u - (31u & (x - x_end));
--    dst_iter += 4u * n;
--    up0 += n;
--    up1 += n;
--    up2 += n;
--    x += n;
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+      if (wuffs_base__cpu_arch__have_x86_sse42()) {
-+        return wuffs_private_impl__swizzle_xxxx__y__x86_sse42;
-+      }
-+#endif
-+      return wuffs_private_impl__swizzle_xxxx__y;
-+
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE:
-+      return wuffs_private_impl__swizzle_xxxxxxxx__y;
-   }
-+  return NULL;
- }
- 
--#if defined(__GNUC__) && !defined(__clang__)
--// No-op.
--#else
--WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
--static const uint8_t*  //
--wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v2_triangle_x86_avx2(
--    uint8_t* dst_ptr,
--    const uint8_t* src_ptr_major,
--    const uint8_t* src_ptr_minor,
--    size_t src_len,
--    uint32_t h1v2_bias_ignored,
--    bool first_column,
--    bool last_column) {
--  uint8_t* dp = dst_ptr;
--  const uint8_t* sp_major = src_ptr_major;
--  const uint8_t* sp_minor = src_ptr_minor;
--
--  if (first_column) {
--    src_len--;
--    if ((src_len <= 0u) && last_column) {
--      uint32_t sv = (12u * ((uint32_t)(*sp_major++))) +  //
--                    (4u * ((uint32_t)(*sp_minor++)));
--      *dp++ = (uint8_t)((sv + 8u) >> 4u);
--      *dp++ = (uint8_t)((sv + 7u) >> 4u);
--      return dst_ptr;
--    }
--
--    uint32_t sv_major_m1 = sp_major[-0];  // Clamp offset to zero.
--    uint32_t sv_minor_m1 = sp_minor[-0];  // Clamp offset to zero.
--    uint32_t sv_major_p1 = sp_major[+1];
--    uint32_t sv_minor_p1 = sp_minor[+1];
--
--    uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
--                  (3u * ((uint32_t)(*sp_minor++)));
--    *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
--    *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
--    if (src_len <= 0u) {
--      return dst_ptr;
--    }
--  }
--
--  if (last_column) {
--    src_len--;
--  }
--
--  if (src_len < 32) {
--    // This fallback is the same as the non-SIMD-capable code path.
--    for (; src_len > 0u; src_len--) {
--      uint32_t sv_major_m1 = sp_major[-1];
--      uint32_t sv_minor_m1 = sp_minor[-1];
--      uint32_t sv_major_p1 = sp_major[+1];
--      uint32_t sv_minor_p1 = sp_minor[+1];
--
--      uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
--                    (3u * ((uint32_t)(*sp_minor++)));
--      *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
--      *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
--    }
--
--  } else {
--    while (src_len > 0u) {
--      // Load 1+32+1 samples (six u8x32 vectors) from the major (jxx) and minor
--      // (nxx) rows.
--      //
--      // major_p0 = [j00 j01 j02 j03 .. j28 j29 j30 j31]   // p0 = "plus  0"
--      // minor_p0 = [n00 n01 n02 n03 .. n28 n29 n30 n31]   // p0 = "plus  0"
--      // major_m1 = [jm1 j00 j01 j02 .. j27 j28 j29 j30]   // m1 = "minus 1"
--      // minor_m1 = [nm1 n00 n01 n02 .. n27 n28 n29 n30]   // m1 = "minus 1"
--      // major_p1 = [j01 j02 j03 j04 .. j29 j30 j31 j32]   // p1 = "plus  1"
--      // minor_p1 = [n01 n02 n03 n04 .. n29 n30 n31 n32]   // p1 = "plus  1"
--      __m256i major_p0 =
--          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_major + 0));
--      __m256i minor_p0 =
--          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_minor + 0));
--      __m256i major_m1 =
--          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_major - 1));
--      __m256i minor_m1 =
--          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_minor - 1));
--      __m256i major_p1 =
--          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_major + 1));
--      __m256i minor_p1 =
--          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_minor + 1));
--
--      // Unpack, staying with u8x32 vectors.
--      //
--      // step1_p0_lo = [j00 n00 j01 n01 .. j07 n07  j16 n16 j17 n17 .. j23 n23]
--      // step1_p0_hi = [j08 n08 j09 n09 .. j15 n15  j24 n24 j25 n25 .. j31 n31]
--      // step1_m1_lo = [jm1 nm1 j00 n00 .. j06 n06  j15 n15 j16 n16 .. j22 n22]
--      // step1_m1_hi = [j07 n07 j08 n08 .. j14 n14  j23 n23 j24 n24 .. j30 n30]
--      // step1_p1_lo = [j01 n01 j02 n02 .. j08 n08  j17 n17 j18 n18 .. j24 n24]
--      // step1_p1_hi = [j09 n09 j10 n10 .. j16 n16  j25 n25 j26 n26 .. j32 n32]
--      __m256i step1_p0_lo = _mm256_unpacklo_epi8(major_p0, minor_p0);
--      __m256i step1_p0_hi = _mm256_unpackhi_epi8(major_p0, minor_p0);
--      __m256i step1_m1_lo = _mm256_unpacklo_epi8(major_m1, minor_m1);
--      __m256i step1_m1_hi = _mm256_unpackhi_epi8(major_m1, minor_m1);
--      __m256i step1_p1_lo = _mm256_unpacklo_epi8(major_p1, minor_p1);
--      __m256i step1_p1_hi = _mm256_unpackhi_epi8(major_p1, minor_p1);
--
--      // Multiply-add to get u16x16 vectors.
--      //
--      // step2_p0_lo = [9*j00+3*n00 9*j01+3*n01 .. 9*j23+3*n23]
--      // step2_p0_hi = [9*j08+3*n08 9*j09+3*n09 .. 9*j31+3*n31]
--      // step2_m1_lo = [3*jm1+1*nm1 3*j00+1*n00 .. 3*j22+1*n22]
--      // step2_m1_hi = [3*j07+1*n07 3*j08+1*n08 .. 3*j30+1*n30]
--      // step2_p1_lo = [3*j01+1*n01 3*j02+1*n02 .. 3*j24+1*n24]
--      // step2_p1_hi = [3*j09+1*n09 3*j10+1*n10 .. 3*j32+1*n32]
--      const __m256i k0309 = _mm256_set1_epi16(0x0309);
--      const __m256i k0103 = _mm256_set1_epi16(0x0103);
--      __m256i step2_p0_lo = _mm256_maddubs_epi16(step1_p0_lo, k0309);
--      __m256i step2_p0_hi = _mm256_maddubs_epi16(step1_p0_hi, k0309);
--      __m256i step2_m1_lo = _mm256_maddubs_epi16(step1_m1_lo, k0103);
--      __m256i step2_m1_hi = _mm256_maddubs_epi16(step1_m1_hi, k0103);
--      __m256i step2_p1_lo = _mm256_maddubs_epi16(step1_p1_lo, k0103);
--      __m256i step2_p1_hi = _mm256_maddubs_epi16(step1_p1_hi, k0103);
--
--      // Compute the weighted sums of (p0, m1) and (p0, p1). For example:
--      //
--      // step3_m1_lo[00] = ((9*j00) + (3*n00) + (3*jm1) + (1*nm1)) as u16
--      // step3_p1_hi[15] = ((9*j31) + (3*n31) + (3*j32) + (1*n32)) as u16
--      __m256i step3_m1_lo = _mm256_add_epi16(step2_p0_lo, step2_m1_lo);
--      __m256i step3_m1_hi = _mm256_add_epi16(step2_p0_hi, step2_m1_hi);
--      __m256i step3_p1_lo = _mm256_add_epi16(step2_p0_lo, step2_p1_lo);
--      __m256i step3_p1_hi = _mm256_add_epi16(step2_p0_hi, step2_p1_hi);
-+static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
-+wuffs_private_impl__pixel_swizzler__prepare__y_16be(
-+    wuffs_base__pixel_swizzler* p,
-+    wuffs_base__pixel_format dst_pixfmt,
-+    wuffs_base__slice_u8 dst_palette,
-+    wuffs_base__slice_u8 src_palette,
-+    wuffs_base__pixel_blend blend) {
-+  switch (dst_pixfmt.repr) {
-+    case WUFFS_BASE__PIXEL_FORMAT__Y:
-+      return wuffs_private_impl__swizzle_y__y_16be;
- 
--      // Bias by 8 (on the left) or 7 (on the right) and then divide by 16
--      // (which is 9+3+3+1) to get a weighted average. On the left (m1), shift
--      // the u16 right value by 4. On the right (p1), shift right by 4 and then
--      // shift left by 8 so that, when still in the u16x16 little-endian
--      // interpretation, we have:
--      //  - m1_element =  (etcetera + 8) >> 4
--      //  - p1_element = ((etcetera + 7) >> 4) << 8
--      //
--      // step4_m1_lo = [0x00?? 0x00?? ... 0x00?? 0x00??]
--      // step4_p1_lo = [0x??00 0x??00 ... 0x??00 0x??00]
--      // step4_m1_hi = [0x00?? 0x00?? ... 0x00?? 0x00??]
--      // step4_p1_hi = [0x??00 0x??00 ... 0x??00 0x??00]
--      __m256i step4_m1_lo = _mm256_srli_epi16(
--          _mm256_add_epi16(step3_m1_lo, _mm256_set1_epi16(8)), 4);
--      __m256i step4_p1_lo = _mm256_slli_epi16(
--          _mm256_srli_epi16(_mm256_add_epi16(step3_p1_lo, _mm256_set1_epi16(7)),
--                            4),
--          8);
--      __m256i step4_m1_hi = _mm256_srli_epi16(
--          _mm256_add_epi16(step3_m1_hi, _mm256_set1_epi16(8)), 4);
--      __m256i step4_p1_hi = _mm256_slli_epi16(
--          _mm256_srli_epi16(_mm256_add_epi16(step3_p1_hi, _mm256_set1_epi16(7)),
--                            4),
--          8);
-+    case WUFFS_BASE__PIXEL_FORMAT__Y_16LE:
-+      return wuffs_private_impl__swizzle_y_16le__y_16be;
- 
--      // Bitwise-or two "0x00"-rich u16x16 vectors to get a u8x32 vector. Do
--      // that twice. Once for the low columns and once for the high columns.
--      //
--      // In terms of jxx (major row) or nxx (minor row) source samples:
--      //  - low  columns means ( 0 ..  8; 16 .. 24).
--      //  - high columns means ( 8 .. 16; 24 .. 32).
--      //
--      // In terms of dxx destination samples (there are twice as many):
--      //  - low  columns means ( 0 .. 16; 32 .. 48).
--      //  - high columns means (16 .. 32; 48 .. 64).
--      //
--      // step5_lo = [d00 d01 .. d14 d15  d32 d33 .. d46 d47]
--      // step5_hi = [d16 d17 .. d30 d31  d48 d49 .. d62 d63]
--      //
--      // The d00, d02 ... d62 even elements come from (p0, m1) weighted sums.
--      // The d01, d03 ... d63 odd  elements come from (p0, p1) weighted sums.
--      __m256i step5_lo = _mm256_or_si256(step4_m1_lo, step4_p1_lo);
--      __m256i step5_hi = _mm256_or_si256(step4_m1_hi, step4_p1_hi);
-+    case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
-+      return wuffs_private_impl__swizzle_copy_2_2;
- 
--      // Permute and store.
--      //
--      // step6_00_31 = [d00 d01 .. d14 d15  d16 d17 .. d30 d31]
--      // step6_32_63 = [d32 d33 .. d46 d47  d48 d49 .. d62 d63]
--      __m256i step6_00_31 = _mm256_permute2x128_si256(step5_lo, step5_hi, 0x20);
--      __m256i step6_32_63 = _mm256_permute2x128_si256(step5_lo, step5_hi, 0x31);
--      _mm256_storeu_si256((__m256i*)(void*)(dp + 0x00), step6_00_31);
--      _mm256_storeu_si256((__m256i*)(void*)(dp + 0x20), step6_32_63);
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
-+      return wuffs_private_impl__swizzle_bgr_565__y_16be;
- 
--      // Advance by up to 32 source samples (64 destination samples). The first
--      // iteration might be smaller than 32 so that all of the remaining steps
--      // are exactly 32.
--      size_t n = 32u - (31u & (0u - src_len));
--      dp += 2u * n;
--      sp_major += n;
--      sp_minor += n;
--      src_len -= n;
--    }
--  }
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGB:
-+      return wuffs_private_impl__swizzle_xxx__y_16be;
- 
--  if (last_column) {
--    uint32_t sv_major_m1 = sp_major[-1];
--    uint32_t sv_minor_m1 = sp_minor[-1];
--    uint32_t sv_major_p1 = sp_major[+0];  // Clamp offset to zero.
--    uint32_t sv_minor_p1 = sp_minor[+0];  // Clamp offset to zero.
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
-+      return wuffs_private_impl__swizzle_xxxx__y_16be;
- 
--    uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
--                  (3u * ((uint32_t)(*sp_minor++)));
--    *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
--    *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE:
-+      return wuffs_private_impl__swizzle_xxxxxxxx__y_16be;
-   }
--
--  return dst_ptr;
-+  return NULL;
- }
--#endif
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_64)
--// ‼ WUFFS MULTI-FILE SECTION -x86_avx2
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) ||
--        // defined(WUFFS_CONFIG__MODULE__BASE) ||
--        // defined(WUFFS_CONFIG__MODULE__BASE__PIXCONV)
--
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
--    defined(WUFFS_CONFIG__MODULE__BASE__UTF8)
-+static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
-+wuffs_private_impl__pixel_swizzler__prepare__ya_nonpremul(
-+    wuffs_base__pixel_swizzler* p,
-+    wuffs_base__pixel_format dst_pixfmt,
-+    wuffs_base__slice_u8 dst_palette,
-+    wuffs_base__slice_u8 src_palette,
-+    wuffs_base__pixel_blend blend) {
-+  switch (dst_pixfmt.repr) {
-+    case WUFFS_BASE__PIXEL_FORMAT__YA_NONPREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_copy_2_2;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_ya_nonpremul__ya_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--// ---------------- Unicode and UTF-8
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgr_565__ya_nonpremul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgr_565__ya_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--WUFFS_BASE__MAYBE_STATIC size_t  //
--wuffs_base__utf_8__encode(wuffs_base__slice_u8 dst, uint32_t code_point) {
--  if (code_point <= 0x7F) {
--    if (dst.len >= 1) {
--      dst.ptr[0] = (uint8_t)(code_point);
--      return 1;
--    }
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGB:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_xxx__ya_nonpremul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_xxx__ya_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--  } else if (code_point <= 0x07FF) {
--    if (dst.len >= 2) {
--      dst.ptr[0] = (uint8_t)(0xC0 | ((code_point >> 6)));
--      dst.ptr[1] = (uint8_t)(0x80 | ((code_point >> 0) & 0x3F));
--      return 2;
--    }
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul__ya_nonpremul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul__ya_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--  } else if (code_point <= 0xFFFF) {
--    if ((dst.len >= 3) && ((code_point < 0xD800) || (0xDFFF < code_point))) {
--      dst.ptr[0] = (uint8_t)(0xE0 | ((code_point >> 12)));
--      dst.ptr[1] = (uint8_t)(0x80 | ((code_point >> 6) & 0x3F));
--      dst.ptr[2] = (uint8_t)(0x80 | ((code_point >> 0) & 0x3F));
--      return 3;
--    }
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgra_premul__ya_nonpremul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_premul__ya_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--  } else if (code_point <= 0x10FFFF) {
--    if (dst.len >= 4) {
--      dst.ptr[0] = (uint8_t)(0xF0 | ((code_point >> 18)));
--      dst.ptr[1] = (uint8_t)(0x80 | ((code_point >> 12) & 0x3F));
--      dst.ptr[2] = (uint8_t)(0x80 | ((code_point >> 6) & 0x3F));
--      dst.ptr[3] = (uint8_t)(0x80 | ((code_point >> 0) & 0x3F));
--      return 4;
--    }
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__ya_nonpremul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__ya_nonpremul__src_over;
-+      }
-+      return NULL;
-   }
--
--  return 0;
-+  return NULL;
- }
- 
--// wuffs_base__utf_8__byte_length_minus_1 is the byte length (minus 1) of a
--// UTF-8 encoded code point, based on the encoding's initial byte.
--//  - 0x00 is 1-byte UTF-8 (ASCII).
--//  - 0x01 is the start of 2-byte UTF-8.
--//  - 0x02 is the start of 3-byte UTF-8.
--//  - 0x03 is the start of 4-byte UTF-8.
--//  - 0x40 is a UTF-8 tail byte.
--//  - 0x80 is invalid UTF-8.
--//
--// RFC 3629 (UTF-8) gives this grammar for valid UTF-8:
--//    UTF8-1      = %x00-7F
--//    UTF8-2      = %xC2-DF UTF8-tail
--//    UTF8-3      = %xE0 %xA0-BF UTF8-tail / %xE1-EC 2( UTF8-tail ) /
--//                  %xED %x80-9F UTF8-tail / %xEE-EF 2( UTF8-tail )
--//    UTF8-4      = %xF0 %x90-BF 2( UTF8-tail ) / %xF1-F3 3( UTF8-tail ) /
--//                  %xF4 %x80-8F 2( UTF8-tail )
--//    UTF8-tail   = %x80-BF
--static const uint8_t wuffs_base__utf_8__byte_length_minus_1[256] = {
--    // 0     1     2     3     4     5     6     7
--    // 8     9     A     B     C     D     E     F
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x00 ..= 0x07.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x08 ..= 0x0F.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x10 ..= 0x17.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x18 ..= 0x1F.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x20 ..= 0x27.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x28 ..= 0x2F.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x30 ..= 0x37.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x38 ..= 0x3F.
--
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x40 ..= 0x47.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x48 ..= 0x4F.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x50 ..= 0x57.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x58 ..= 0x5F.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x60 ..= 0x67.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x68 ..= 0x6F.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x70 ..= 0x77.
--    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x78 ..= 0x7F.
--
--    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0x80 ..= 0x87.
--    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0x88 ..= 0x8F.
--    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0x90 ..= 0x97.
--    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0x98 ..= 0x9F.
--    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0xA0 ..= 0xA7.
--    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0xA8 ..= 0xAF.
--    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0xB0 ..= 0xB7.
--    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0xB8 ..= 0xBF.
-+static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
-+wuffs_private_impl__pixel_swizzler__prepare__indexed__bgra_nonpremul(
-+    wuffs_base__pixel_swizzler* p,
-+    wuffs_base__pixel_format dst_pixfmt,
-+    wuffs_base__slice_u8 dst_palette,
-+    wuffs_base__slice_u8 src_palette,
-+    wuffs_base__pixel_blend blend) {
-+  switch (dst_pixfmt.repr) {
-+    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
-+      if (wuffs_private_impl__slice_u8__copy_from_slice(dst_palette,
-+                                                        src_palette) !=
-+          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-+        return NULL;
-+      }
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_copy_1_1;
-+      }
-+      return NULL;
- 
--    0x80, 0x80, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,  // 0xC0 ..= 0xC7.
--    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,  // 0xC8 ..= 0xCF.
--    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,  // 0xD0 ..= 0xD7.
--    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,  // 0xD8 ..= 0xDF.
--    0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,  // 0xE0 ..= 0xE7.
--    0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,  // 0xE8 ..= 0xEF.
--    0x03, 0x03, 0x03, 0x03, 0x03, 0x80, 0x80, 0x80,  // 0xF0 ..= 0xF7.
--    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xF8 ..= 0xFF.
--    // 0     1     2     3     4     5     6     7
--    // 8     9     A     B     C     D     E     F
--};
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          if (wuffs_private_impl__swizzle_squash_align4_bgr_565_8888(
-+                  dst_palette.ptr, dst_palette.len, src_palette.ptr,
-+                  src_palette.len, true) !=
-+              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
-+            return NULL;
-+          }
-+          return wuffs_private_impl__swizzle_bgr_565__index__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          if (wuffs_private_impl__slice_u8__copy_from_slice(dst_palette,
-+                                                            src_palette) !=
-+              WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-+            return NULL;
-+          }
-+          return wuffs_private_impl__swizzle_bgr_565__index_bgra_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--WUFFS_BASE__MAYBE_STATIC wuffs_base__utf_8__next__output  //
--wuffs_base__utf_8__next(const uint8_t* s_ptr, size_t s_len) {
--  if (s_len == 0) {
--    return wuffs_base__make_utf_8__next__output(0, 0);
--  }
--  uint32_t c = s_ptr[0];
--  switch (wuffs_base__utf_8__byte_length_minus_1[c & 0xFF]) {
--    case 0:
--      return wuffs_base__make_utf_8__next__output(c, 1);
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          if (wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul__src(
-+                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
-+                  src_palette.len) !=
-+              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
-+            return NULL;
-+          }
-+          return wuffs_private_impl__swizzle_xxx__index__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          if (wuffs_private_impl__slice_u8__copy_from_slice(dst_palette,
-+                                                            src_palette) !=
-+              WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-+            return NULL;
-+          }
-+          return wuffs_private_impl__swizzle_xxx__index_bgra_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--    case 1:
--      if (s_len < 2) {
--        break;
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
-+      if (wuffs_private_impl__slice_u8__copy_from_slice(dst_palette,
-+                                                        src_palette) !=
-+          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-+        return NULL;
-       }
--      c = wuffs_base__peek_u16le__no_bounds_check(s_ptr);
--      if ((c & 0xC000) != 0x8000) {
--        break;
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_xxxx__index__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul__index_bgra_nonpremul__src_over;
-       }
--      c = (0x0007C0 & (c << 6)) | (0x00003F & (c >> 8));
--      return wuffs_base__make_utf_8__next__output(c, 2);
-+      return NULL;
- 
--    case 2:
--      if (s_len < 3) {
--        break;
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
-+      if (wuffs_private_impl__slice_u8__copy_from_slice(dst_palette,
-+                                                        src_palette) !=
-+          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-+        return NULL;
-       }
--      c = wuffs_base__peek_u24le__no_bounds_check(s_ptr);
--      if ((c & 0xC0C000) != 0x808000) {
--        break;
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_xxxxxxxx__index__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__index_bgra_nonpremul__src_over;
-       }
--      c = (0x00F000 & (c << 12)) | (0x000FC0 & (c >> 2)) |
--          (0x00003F & (c >> 16));
--      if ((c <= 0x07FF) || ((0xD800 <= c) && (c <= 0xDFFF))) {
--        break;
-+      return NULL;
-+
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          if (wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul__src(
-+                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
-+                  src_palette.len) !=
-+              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
-+            return NULL;
-+          }
-+          return wuffs_private_impl__swizzle_xxxx__index__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          if (wuffs_private_impl__slice_u8__copy_from_slice(dst_palette,
-+                                                            src_palette) !=
-+              WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-+            return NULL;
-+          }
-+          return wuffs_private_impl__swizzle_bgra_premul__index_bgra_nonpremul__src_over;
-       }
--      return wuffs_base__make_utf_8__next__output(c, 3);
-+      return NULL;
- 
--    case 3:
--      if (s_len < 4) {
--        break;
-+    case WUFFS_BASE__PIXEL_FORMAT__RGB:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          if (wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul__src(
-+                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
-+                  src_palette.len) !=
-+              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
-+            return NULL;
-+          }
-+          return wuffs_private_impl__swizzle_xxx__index__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          if (wuffs_private_impl__swizzle_swap_rgbx_bgrx(
-+                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
-+                  src_palette.len) !=
-+              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
-+            return NULL;
-+          }
-+          return wuffs_private_impl__swizzle_xxx__index_bgra_nonpremul__src_over;
-       }
--      c = wuffs_base__peek_u32le__no_bounds_check(s_ptr);
--      if ((c & 0xC0C0C000) != 0x80808000) {
--        break;
-+      return NULL;
-+
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
-+      if (wuffs_private_impl__swizzle_swap_rgbx_bgrx(
-+              dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
-+              src_palette.len) !=
-+          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
-+        return NULL;
-       }
--      c = (0x1C0000 & (c << 18)) | (0x03F000 & (c << 4)) |
--          (0x000FC0 & (c >> 10)) | (0x00003F & (c >> 24));
--      if ((c <= 0xFFFF) || (0x110000 <= c)) {
--        break;
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_xxxx__index__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul__index_bgra_nonpremul__src_over;
-       }
--      return wuffs_base__make_utf_8__next__output(c, 4);
--  }
-+      return NULL;
- 
--  return wuffs_base__make_utf_8__next__output(
--      WUFFS_BASE__UNICODE_REPLACEMENT_CHARACTER, 1);
--}
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          if (wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul__src(
-+                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
-+                  src_palette.len) !=
-+              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
-+            return NULL;
-+          }
-+          return wuffs_private_impl__swizzle_xxxx__index__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          if (wuffs_private_impl__swizzle_swap_rgbx_bgrx(
-+                  dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
-+                  src_palette.len) !=
-+              (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
-+            return NULL;
-+          }
-+          return wuffs_private_impl__swizzle_bgra_premul__index_bgra_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--WUFFS_BASE__MAYBE_STATIC wuffs_base__utf_8__next__output  //
--wuffs_base__utf_8__next_from_end(const uint8_t* s_ptr, size_t s_len) {
--  if (s_len == 0) {
--    return wuffs_base__make_utf_8__next__output(0, 0);
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
-+      // TODO.
-+      break;
-   }
--  const uint8_t* ptr = &s_ptr[s_len - 1];
--  if (*ptr < 0x80) {
--    return wuffs_base__make_utf_8__next__output(*ptr, 1);
-+  return NULL;
-+}
- 
--  } else if (*ptr < 0xC0) {
--    const uint8_t* too_far = &s_ptr[(s_len > 4) ? (s_len - 4) : 0];
--    uint32_t n = 1;
--    while (ptr != too_far) {
--      ptr--;
--      n++;
--      if (*ptr < 0x80) {
--        break;
--      } else if (*ptr < 0xC0) {
--        continue;
-+static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
-+wuffs_private_impl__pixel_swizzler__prepare__indexed__bgra_binary(
-+    wuffs_base__pixel_swizzler* p,
-+    wuffs_base__pixel_format dst_pixfmt,
-+    wuffs_base__slice_u8 dst_palette,
-+    wuffs_base__slice_u8 src_palette,
-+    wuffs_base__pixel_blend blend) {
-+  switch (dst_pixfmt.repr) {
-+    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:
-+      if (wuffs_private_impl__slice_u8__copy_from_slice(dst_palette,
-+                                                        src_palette) !=
-+          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-+        return NULL;
-       }
--      wuffs_base__utf_8__next__output o = wuffs_base__utf_8__next(ptr, n);
--      if (o.byte_length != n) {
--        break;
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_copy_1_1;
-       }
--      return o;
--    }
--  }
--
--  return wuffs_base__make_utf_8__next__output(
--      WUFFS_BASE__UNICODE_REPLACEMENT_CHARACTER, 1);
--}
-+      return NULL;
- 
--WUFFS_BASE__MAYBE_STATIC size_t  //
--wuffs_base__utf_8__longest_valid_prefix(const uint8_t* s_ptr, size_t s_len) {
--  // TODO: possibly optimize the all-ASCII case (4 or 8 bytes at a time).
--  //
--  // TODO: possibly optimize this by manually inlining the
--  // wuffs_base__utf_8__next calls.
--  size_t original_len = s_len;
--  while (s_len > 0) {
--    wuffs_base__utf_8__next__output o = wuffs_base__utf_8__next(s_ptr, s_len);
--    if ((o.code_point > 0x7F) && (o.byte_length == 1)) {
--      break;
--    }
--    s_ptr += o.byte_length;
--    s_len -= o.byte_length;
--  }
--  return original_len - s_len;
--}
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
-+      if (wuffs_private_impl__swizzle_squash_align4_bgr_565_8888(
-+              dst_palette.ptr, dst_palette.len, src_palette.ptr,
-+              src_palette.len, false) !=
-+          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
-+        return NULL;
-+      }
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgr_565__index__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgr_565__index_binary_alpha__src_over;
-+      }
-+      return NULL;
- 
--WUFFS_BASE__MAYBE_STATIC size_t  //
--wuffs_base__ascii__longest_valid_prefix(const uint8_t* s_ptr, size_t s_len) {
--  // TODO: possibly optimize this by checking 4 or 8 bytes at a time.
--  const uint8_t* original_ptr = s_ptr;
--  const uint8_t* p = s_ptr;
--  const uint8_t* q = s_ptr + s_len;
--  for (; (p != q) && ((*p & 0x80) == 0); p++) {
--  }
--  return (size_t)(p - original_ptr);
--}
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR:
-+      if (wuffs_private_impl__slice_u8__copy_from_slice(dst_palette,
-+                                                        src_palette) !=
-+          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-+        return NULL;
-+      }
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_xxx__index__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_xxx__index_binary_alpha__src_over;
-+      }
-+      return NULL;
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) ||
--        // defined(WUFFS_CONFIG__MODULE__BASE) ||
--        // defined(WUFFS_CONFIG__MODULE__BASE__UTF8)
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
-+      if (wuffs_private_impl__slice_u8__copy_from_slice(dst_palette,
-+                                                        src_palette) !=
-+          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-+        return NULL;
-+      }
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_xxxx__index__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_xxxx__index_binary_alpha__src_over;
-+      }
-+      return NULL;
- 
--#ifdef __cplusplus
--}  // extern "C"
--#endif
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
-+      if (wuffs_private_impl__slice_u8__copy_from_slice(dst_palette,
-+                                                        src_palette) !=
-+          WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
-+        return NULL;
-+      }
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_xxxxxxxx__index__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_xxxxxxxx__index_binary_alpha__src_over;
-+      }
-+      return NULL;
- 
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ADLER32)
-+    case WUFFS_BASE__PIXEL_FORMAT__RGB:
-+      if (wuffs_private_impl__swizzle_swap_rgbx_bgrx(
-+              dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
-+              src_palette.len) !=
-+          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
-+        return NULL;
-+      }
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_xxx__index__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_xxx__index_binary_alpha__src_over;
-+      }
-+      return NULL;
- 
--// ---------------- Status Codes Implementations
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
-+      if (wuffs_private_impl__swizzle_swap_rgbx_bgrx(
-+              dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
-+              src_palette.len) !=
-+          (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
-+        return NULL;
-+      }
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_xxxx__index__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_xxxx__index_binary_alpha__src_over;
-+      }
-+      return NULL;
-+  }
-+  return NULL;
-+}
- 
--// ---------------- Private Consts
-+static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
-+wuffs_private_impl__pixel_swizzler__prepare__bgr_565(
-+    wuffs_base__pixel_swizzler* p,
-+    wuffs_base__pixel_format dst_pixfmt,
-+    wuffs_base__slice_u8 dst_palette,
-+    wuffs_base__slice_u8 src_palette,
-+    wuffs_base__pixel_blend blend) {
-+  switch (dst_pixfmt.repr) {
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
-+      return wuffs_private_impl__swizzle_copy_2_2;
- 
--// ---------------- Private Initializer Prototypes
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR:
-+      return wuffs_private_impl__swizzle_bgr__bgr_565;
- 
--// ---------------- Private Function Prototypes
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
-+      return wuffs_private_impl__swizzle_bgrw__bgr_565;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_adler32__hasher__up(
--    wuffs_adler32__hasher* self,
--    wuffs_base__slice_u8 a_x);
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
-+      return wuffs_private_impl__swizzle_bgrw_4x16le__bgr_565;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_adler32__hasher__up__choosy_default(
--    wuffs_adler32__hasher* self,
--    wuffs_base__slice_u8 a_x);
-+    case WUFFS_BASE__PIXEL_FORMAT__RGB:
-+      return wuffs_private_impl__swizzle_rgb__bgr_565;
- 
--#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_adler32__hasher__up_arm_neon(
--    wuffs_adler32__hasher* self,
--    wuffs_base__slice_u8 a_x);
--#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
-+      return wuffs_private_impl__swizzle_rgbw__bgr_565;
-+  }
-+  return NULL;
-+}
- 
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_adler32__hasher__up_x86_sse42(
--    wuffs_adler32__hasher* self,
--    wuffs_base__slice_u8 a_x);
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
-+static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
-+wuffs_private_impl__pixel_swizzler__prepare__bgr(
-+    wuffs_base__pixel_swizzler* p,
-+    wuffs_base__pixel_format dst_pixfmt,
-+    wuffs_base__slice_u8 dst_palette,
-+    wuffs_base__slice_u8 src_palette,
-+    wuffs_base__pixel_blend blend) {
-+  switch (dst_pixfmt.repr) {
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
-+      return wuffs_private_impl__swizzle_bgr_565__bgr;
- 
--// ---------------- VTables
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR:
-+      return wuffs_private_impl__swizzle_copy_3_3;
- 
--const wuffs_base__hasher_u32__func_ptrs
--wuffs_adler32__hasher__func_ptrs_for__wuffs_base__hasher_u32 = {
--  (uint32_t(*)(const void*))(&wuffs_adler32__hasher__checksum_u32),
--  (uint64_t(*)(const void*,
--      uint32_t))(&wuffs_adler32__hasher__get_quirk),
--  (wuffs_base__status(*)(void*,
--      uint32_t,
--      uint64_t))(&wuffs_adler32__hasher__set_quirk),
--  (wuffs_base__empty_struct(*)(void*,
--      wuffs_base__slice_u8))(&wuffs_adler32__hasher__update),
--  (uint32_t(*)(void*,
--      wuffs_base__slice_u8))(&wuffs_adler32__hasher__update_u32),
--};
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+      if (wuffs_base__cpu_arch__have_x86_sse42()) {
-+        return wuffs_private_impl__swizzle_bgrw__bgr__x86_sse42;
-+      }
-+#endif
-+      return wuffs_private_impl__swizzle_bgrw__bgr;
- 
--// ---------------- Initializer Implementations
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
-+      return wuffs_private_impl__swizzle_bgrw_4x16le__bgr;
- 
--wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_adler32__hasher__initialize(
--    wuffs_adler32__hasher* self,
--    size_t sizeof_star_self,
--    uint64_t wuffs_version,
--    uint32_t options){
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (sizeof(*self) != sizeof_star_self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
--  }
--  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
--      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
--    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
--  }
-+    case WUFFS_BASE__PIXEL_FORMAT__RGB:
-+      return wuffs_private_impl__swizzle_swap_rgb_bgr;
- 
--  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
--    // The whole point of this if-check is to detect an uninitialized *self.
--    // We disable the warning on GCC. Clang-5.0 does not have this warning.
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
--#endif
--    if (self->private_impl.magic != 0) {
--      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
--    }
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic pop
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+      if (wuffs_base__cpu_arch__have_x86_sse42()) {
-+        return wuffs_private_impl__swizzle_bgrw__rgb__x86_sse42;
-+      }
- #endif
--  } else {
--    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
--      memset(self, 0, sizeof(*self));
--      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
--    } else {
--      memset(&(self->private_impl), 0, sizeof(self->private_impl));
--    }
-+      return wuffs_private_impl__swizzle_bgrw__rgb;
-   }
-+  return NULL;
-+}
- 
--  self->private_impl.choosy_up = &wuffs_adler32__hasher__up__choosy_default;
-+static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
-+wuffs_private_impl__pixel_swizzler__prepare__bgra_nonpremul(
-+    wuffs_base__pixel_swizzler* p,
-+    wuffs_base__pixel_format dst_pixfmt,
-+    wuffs_base__slice_u8 dst_palette,
-+    wuffs_base__slice_u8 src_palette,
-+    wuffs_base__pixel_blend blend) {
-+  switch (dst_pixfmt.repr) {
-+    case WUFFS_BASE__PIXEL_FORMAT__Y:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_y__bgra_nonpremul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_y__bgra_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--  self->private_impl.magic = WUFFS_BASE__MAGIC;
--  self->private_impl.vtable_for__wuffs_base__hasher_u32.vtable_name =
--      wuffs_base__hasher_u32__vtable_name;
--  self->private_impl.vtable_for__wuffs_base__hasher_u32.function_pointers =
--      (const void*)(&wuffs_adler32__hasher__func_ptrs_for__wuffs_base__hasher_u32);
--  return wuffs_base__make_status(NULL);
--}
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgr_565__bgra_nonpremul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgr_565__bgra_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--wuffs_adler32__hasher*
--wuffs_adler32__hasher__alloc(void) {
--  wuffs_adler32__hasher* x =
--      (wuffs_adler32__hasher*)(calloc(sizeof(wuffs_adler32__hasher), 1));
--  if (!x) {
--    return NULL;
--  }
--  if (wuffs_adler32__hasher__initialize(
--      x, sizeof(wuffs_adler32__hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
--    free(x);
--    return NULL;
--  }
--  return x;
--}
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgr__bgra_nonpremul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgr__bgra_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--size_t
--sizeof__wuffs_adler32__hasher(void) {
--  return sizeof(wuffs_adler32__hasher);
--}
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_copy_4_4;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul__bgra_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--// ---------------- Function Implementations
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__bgra_nonpremul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__bgra_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--// -------- func adler32.hasher.get_quirk
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_adler32__hasher__get_quirk(
--    const wuffs_adler32__hasher* self,
--    uint32_t a_key) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
-+      // TODO.
-+      break;
- 
--  return 0u;
--}
-+    case WUFFS_BASE__PIXEL_FORMAT__RGB:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgr__rgba_nonpremul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgr__rgba_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--// -------- func adler32.hasher.set_quirk
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+          if (wuffs_base__cpu_arch__have_x86_sse42()) {
-+            return wuffs_private_impl__swizzle_swap_rgbx_bgrx__x86_sse42;
-+          }
-+#endif
-+          return wuffs_private_impl__swizzle_swap_rgbx_bgrx;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul__rgba_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_adler32__hasher__set_quirk(
--    wuffs_adler32__hasher* self,
--    uint32_t a_key,
--    uint64_t a_value) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
-+      // TODO.
-+      break;
-+  }
-+  return NULL;
- }
- 
--// -------- func adler32.hasher.update
-+static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
-+wuffs_private_impl__pixel_swizzler__prepare__bgra_nonpremul_4x16le(
-+    wuffs_base__pixel_swizzler* p,
-+    wuffs_base__pixel_format dst_pixfmt,
-+    wuffs_base__slice_u8 dst_palette,
-+    wuffs_base__slice_u8 src_palette,
-+    wuffs_base__pixel_blend blend) {
-+  switch (dst_pixfmt.repr) {
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgr_565__bgra_nonpremul_4x16le__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgr_565__bgra_nonpremul_4x16le__src_over;
-+      }
-+      return NULL;
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_adler32__hasher__update(
--    wuffs_adler32__hasher* self,
--    wuffs_base__slice_u8 a_x) {
--  if (!self) {
--    return wuffs_base__make_empty_struct();
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_empty_struct();
--  }
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgr__bgra_nonpremul_4x16le__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgr__bgra_nonpremul_4x16le__src_over;
-+      }
-+      return NULL;
- 
--  if ( ! self->private_impl.f_started) {
--    self->private_impl.f_started = true;
--    self->private_impl.f_state = 1u;
--    self->private_impl.choosy_up = (
--#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--        wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_adler32__hasher__up_arm_neon :
--#endif
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_adler32__hasher__up_x86_sse42 :
--#endif
--        self->private_impl.choosy_up);
--  }
--  wuffs_adler32__hasher__up(self, a_x);
--  return wuffs_base__make_empty_struct();
--}
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul__bgra_nonpremul_4x16le__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul__bgra_nonpremul_4x16le__src_over;
-+      }
-+      return NULL;
- 
--// -------- func adler32.hasher.update_u32
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_copy_8_8;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__bgra_nonpremul_4x16le__src_over;
-+      }
-+      return NULL;
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_adler32__hasher__update_u32(
--    wuffs_adler32__hasher* self,
--    wuffs_base__slice_u8 a_x) {
--  if (!self) {
--    return 0;
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return 0;
--  }
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul_4x16le__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul_4x16le__src_over;
-+      }
-+      return NULL;
- 
--  wuffs_adler32__hasher__update(self, a_x);
--  return self->private_impl.f_state;
--}
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
-+      // TODO.
-+      break;
- 
--// -------- func adler32.hasher.up
-+    case WUFFS_BASE__PIXEL_FORMAT__RGB:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgr__rgba_nonpremul_4x16le__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgr__rgba_nonpremul_4x16le__src_over;
-+      }
-+      return NULL;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_adler32__hasher__up(
--    wuffs_adler32__hasher* self,
--    wuffs_base__slice_u8 a_x) {
--  return (*self->private_impl.choosy_up)(self, a_x);
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_rgba_nonpremul__bgra_nonpremul_4x16le__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_rgba_nonpremul__bgra_nonpremul_4x16le__src_over;
-+      }
-+      break;
-+
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul_4x16le__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul_4x16le__src_over;
-+      }
-+      return NULL;
-+
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
-+      // TODO.
-+      break;
-+  }
-+  return NULL;
- }
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_adler32__hasher__up__choosy_default(
--    wuffs_adler32__hasher* self,
--    wuffs_base__slice_u8 a_x) {
--  uint32_t v_s1 = 0;
--  uint32_t v_s2 = 0;
--  wuffs_base__slice_u8 v_remaining = {0};
--  wuffs_base__slice_u8 v_p = {0};
--
--  v_s1 = ((self->private_impl.f_state) & 0xFFFFu);
--  v_s2 = ((self->private_impl.f_state) >> (32u - 16u));
--  while (((uint64_t)(a_x.len)) > 0u) {
--    v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0u);
--    if (((uint64_t)(a_x.len)) > 5552u) {
--      v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 5552u);
--      a_x = wuffs_base__slice_u8__subslice_j(a_x, 5552u);
--    }
--    {
--      wuffs_base__slice_u8 i_slice_p = a_x;
--      v_p.ptr = i_slice_p.ptr;
--      v_p.len = 1;
--      uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 8) * 8);
--      while (v_p.ptr < i_end0_p) {
--        v_s1 += ((uint32_t)(v_p.ptr[0u]));
--        v_s2 += v_s1;
--        v_p.ptr += 1;
--        v_s1 += ((uint32_t)(v_p.ptr[0u]));
--        v_s2 += v_s1;
--        v_p.ptr += 1;
--        v_s1 += ((uint32_t)(v_p.ptr[0u]));
--        v_s2 += v_s1;
--        v_p.ptr += 1;
--        v_s1 += ((uint32_t)(v_p.ptr[0u]));
--        v_s2 += v_s1;
--        v_p.ptr += 1;
--        v_s1 += ((uint32_t)(v_p.ptr[0u]));
--        v_s2 += v_s1;
--        v_p.ptr += 1;
--        v_s1 += ((uint32_t)(v_p.ptr[0u]));
--        v_s2 += v_s1;
--        v_p.ptr += 1;
--        v_s1 += ((uint32_t)(v_p.ptr[0u]));
--        v_s2 += v_s1;
--        v_p.ptr += 1;
--        v_s1 += ((uint32_t)(v_p.ptr[0u]));
--        v_s2 += v_s1;
--        v_p.ptr += 1;
--      }
--      v_p.len = 1;
--      uint8_t* i_end1_p = i_slice_p.ptr + i_slice_p.len;
--      while (v_p.ptr < i_end1_p) {
--        v_s1 += ((uint32_t)(v_p.ptr[0u]));
--        v_s2 += v_s1;
--        v_p.ptr += 1;
-+static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
-+wuffs_private_impl__pixel_swizzler__prepare__bgra_premul(
-+    wuffs_base__pixel_swizzler* p,
-+    wuffs_base__pixel_format dst_pixfmt,
-+    wuffs_base__slice_u8 dst_palette,
-+    wuffs_base__slice_u8 src_palette,
-+    wuffs_base__pixel_blend blend) {
-+  switch (dst_pixfmt.repr) {
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgr_565__bgra_premul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgr_565__bgra_premul__src_over;
-       }
--      v_p.len = 0;
--    }
--    v_s1 %= 65521u;
--    v_s2 %= 65521u;
--    a_x = v_remaining;
--  }
--  self->private_impl.f_state = (((v_s2 & 65535u) << 16u) | (v_s1 & 65535u));
--  return wuffs_base__make_empty_struct();
--}
--
--// -------- func adler32.hasher.checksum_u32
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_adler32__hasher__checksum_u32(
--    const wuffs_adler32__hasher* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
--
--  return self->private_impl.f_state;
--}
--
--// ‼ WUFFS MULTI-FILE SECTION +arm_neon
--// -------- func adler32.hasher.up_arm_neon
-+      return NULL;
- 
--#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_adler32__hasher__up_arm_neon(
--    wuffs_adler32__hasher* self,
--    wuffs_base__slice_u8 a_x) {
--  uint32_t v_s1 = 0;
--  uint32_t v_s2 = 0;
--  wuffs_base__slice_u8 v_remaining = {0};
--  wuffs_base__slice_u8 v_p = {0};
--  uint8x16_t v_p__left = {0};
--  uint8x16_t v_p_right = {0};
--  uint32x4_t v_v1 = {0};
--  uint32x4_t v_v2 = {0};
--  uint16x8_t v_col0 = {0};
--  uint16x8_t v_col1 = {0};
--  uint16x8_t v_col2 = {0};
--  uint16x8_t v_col3 = {0};
--  uint32x2_t v_sum1 = {0};
--  uint32x2_t v_sum2 = {0};
--  uint32x2_t v_sum12 = {0};
--  uint32_t v_num_iterate_bytes = 0;
--  uint64_t v_tail_index = 0;
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgr__bgra_premul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgr__bgra_premul__src_over;
-+      }
-+      return NULL;
- 
--  v_s1 = ((self->private_impl.f_state) & 0xFFFFu);
--  v_s2 = ((self->private_impl.f_state) >> (32u - 16u));
--  while ((((uint64_t)(a_x.len)) > 0u) && ((15u & ((uint32_t)(0xFFFu & (uintptr_t)(a_x.ptr)))) != 0u)) {
--    v_s1 += ((uint32_t)(a_x.ptr[0u]));
--    v_s2 += v_s1;
--    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
--  }
--  v_s1 %= 65521u;
--  v_s2 %= 65521u;
--  while (((uint64_t)(a_x.len)) > 0u) {
--    v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0u);
--    if (((uint64_t)(a_x.len)) > 5536u) {
--      v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 5536u);
--      a_x = wuffs_base__slice_u8__subslice_j(a_x, 5536u);
--    }
--    v_num_iterate_bytes = ((uint32_t)((((uint64_t)(a_x.len)) & 4294967264u)));
--    v_s2 += ((uint32_t)(v_s1 * v_num_iterate_bytes));
--    v_v1 = vdupq_n_u32(0u);
--    v_v2 = vdupq_n_u32(0u);
--    v_col0 = vdupq_n_u16(0u);
--    v_col1 = vdupq_n_u16(0u);
--    v_col2 = vdupq_n_u16(0u);
--    v_col3 = vdupq_n_u16(0u);
--    {
--      wuffs_base__slice_u8 i_slice_p = a_x;
--      v_p.ptr = i_slice_p.ptr;
--      v_p.len = 32;
--      uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32);
--      while (v_p.ptr < i_end0_p) {
--        v_p__left = vld1q_u8(v_p.ptr);
--        v_p_right = vld1q_u8(v_p.ptr + 16u);
--        v_v2 = vaddq_u32(v_v2, v_v1);
--        v_v1 = vpadalq_u16(v_v1, vpadalq_u8(vpaddlq_u8(v_p__left), v_p_right));
--        v_col0 = vaddw_u8(v_col0, vget_low_u8(v_p__left));
--        v_col1 = vaddw_u8(v_col1, vget_high_u8(v_p__left));
--        v_col2 = vaddw_u8(v_col2, vget_low_u8(v_p_right));
--        v_col3 = vaddw_u8(v_col3, vget_high_u8(v_p_right));
--        v_p.ptr += 32;
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul__bgra_premul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul__bgra_premul__src_over;
-       }
--      v_p.len = 0;
--    }
--    v_v2 = vshlq_n_u32(v_v2, 5u);
--    v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col0), ((uint16x4_t){32u, 31u, 30u, 29u}));
--    v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col0), ((uint16x4_t){28u, 27u, 26u, 25u}));
--    v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col1), ((uint16x4_t){24u, 23u, 22u, 21u}));
--    v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col1), ((uint16x4_t){20u, 19u, 18u, 17u}));
--    v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col2), ((uint16x4_t){16u, 15u, 14u, 13u}));
--    v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col2), ((uint16x4_t){12u, 11u, 10u, 9u}));
--    v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col3), ((uint16x4_t){8u, 7u, 6u, 5u}));
--    v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col3), ((uint16x4_t){4u, 3u, 2u, 1u}));
--    v_sum1 = vpadd_u32(vget_low_u32(v_v1), vget_high_u32(v_v1));
--    v_sum2 = vpadd_u32(vget_low_u32(v_v2), vget_high_u32(v_v2));
--    v_sum12 = vpadd_u32(v_sum1, v_sum2);
--    v_s1 += vget_lane_u32(v_sum12, 0u);
--    v_s2 += vget_lane_u32(v_sum12, 1u);
--    v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551584u);
--    if (v_tail_index < ((uint64_t)(a_x.len))) {
--      {
--        wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index);
--        v_p.ptr = i_slice_p.ptr;
--        v_p.len = 1;
--        uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len;
--        while (v_p.ptr < i_end0_p) {
--          v_s1 += ((uint32_t)(v_p.ptr[0u]));
--          v_s2 += v_s1;
--          v_p.ptr += 1;
--        }
--        v_p.len = 0;
-+      return NULL;
-+
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__bgra_premul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__bgra_premul__src_over;
-       }
--    }
--    v_s1 %= 65521u;
--    v_s2 %= 65521u;
--    a_x = v_remaining;
--  }
--  self->private_impl.f_state = (((v_s2 & 65535u) << 16u) | (v_s1 & 65535u));
--  return wuffs_base__make_empty_struct();
--}
--#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--// ‼ WUFFS MULTI-FILE SECTION -arm_neon
-+      return NULL;
- 
--// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
--// -------- func adler32.hasher.up_x86_sse42
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_copy_4_4;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_premul__bgra_premul__src_over;
-+      }
-+      return NULL;
- 
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_adler32__hasher__up_x86_sse42(
--    wuffs_adler32__hasher* self,
--    wuffs_base__slice_u8 a_x) {
--  uint32_t v_s1 = 0;
--  uint32_t v_s2 = 0;
--  wuffs_base__slice_u8 v_remaining = {0};
--  wuffs_base__slice_u8 v_p = {0};
--  __m128i v_zeroes = {0};
--  __m128i v_ones = {0};
--  __m128i v_weights__left = {0};
--  __m128i v_weights_right = {0};
--  __m128i v_q__left = {0};
--  __m128i v_q_right = {0};
--  __m128i v_v1 = {0};
--  __m128i v_v2 = {0};
--  __m128i v_v2j = {0};
--  __m128i v_v2k = {0};
--  uint32_t v_num_iterate_bytes = 0;
--  uint64_t v_tail_index = 0;
-+    case WUFFS_BASE__PIXEL_FORMAT__RGB:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgr__rgba_premul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgr__rgba_premul__src_over;
-+      }
-+      return NULL;
- 
--  v_zeroes = _mm_set1_epi16((int16_t)(0u));
--  v_ones = _mm_set1_epi16((int16_t)(1u));
--  v_weights__left = _mm_set_epi8((int8_t)(17u), (int8_t)(18u), (int8_t)(19u), (int8_t)(20u), (int8_t)(21u), (int8_t)(22u), (int8_t)(23u), (int8_t)(24u), (int8_t)(25u), (int8_t)(26u), (int8_t)(27u), (int8_t)(28u), (int8_t)(29u), (int8_t)(30u), (int8_t)(31u), (int8_t)(32u));
--  v_weights_right = _mm_set_epi8((int8_t)(1u), (int8_t)(2u), (int8_t)(3u), (int8_t)(4u), (int8_t)(5u), (int8_t)(6u), (int8_t)(7u), (int8_t)(8u), (int8_t)(9u), (int8_t)(10u), (int8_t)(11u), (int8_t)(12u), (int8_t)(13u), (int8_t)(14u), (int8_t)(15u), (int8_t)(16u));
--  v_s1 = ((self->private_impl.f_state) & 0xFFFFu);
--  v_s2 = ((self->private_impl.f_state) >> (32u - 16u));
--  while (((uint64_t)(a_x.len)) > 0u) {
--    v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0u);
--    if (((uint64_t)(a_x.len)) > 5536u) {
--      v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 5536u);
--      a_x = wuffs_base__slice_u8__subslice_j(a_x, 5536u);
--    }
--    v_num_iterate_bytes = ((uint32_t)((((uint64_t)(a_x.len)) & 4294967264u)));
--    v_s2 += ((uint32_t)(v_s1 * v_num_iterate_bytes));
--    v_v1 = _mm_setzero_si128();
--    v_v2j = _mm_setzero_si128();
--    v_v2k = _mm_setzero_si128();
--    {
--      wuffs_base__slice_u8 i_slice_p = a_x;
--      v_p.ptr = i_slice_p.ptr;
--      v_p.len = 32;
--      uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32);
--      while (v_p.ptr < i_end0_p) {
--        v_q__left = _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr));
--        v_q_right = _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 16u));
--        v_v2j = _mm_add_epi32(v_v2j, v_v1);
--        v_v1 = _mm_add_epi32(v_v1, _mm_sad_epu8(v_q__left, v_zeroes));
--        v_v1 = _mm_add_epi32(v_v1, _mm_sad_epu8(v_q_right, v_zeroes));
--        v_v2k = _mm_add_epi32(v_v2k, _mm_madd_epi16(v_ones, _mm_maddubs_epi16(v_q__left, v_weights__left)));
--        v_v2k = _mm_add_epi32(v_v2k, _mm_madd_epi16(v_ones, _mm_maddubs_epi16(v_q_right, v_weights_right)));
--        v_p.ptr += 32;
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul__rgba_premul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul__rgba_premul__src_over;
-       }
--      v_p.len = 0;
--    }
--    v_v1 = _mm_add_epi32(v_v1, _mm_shuffle_epi32(v_v1, (int32_t)(177u)));
--    v_v1 = _mm_add_epi32(v_v1, _mm_shuffle_epi32(v_v1, (int32_t)(78u)));
--    v_s1 += ((uint32_t)(_mm_cvtsi128_si32(v_v1)));
--    v_v2 = _mm_add_epi32(v_v2k, _mm_slli_epi32(v_v2j, (int32_t)(5u)));
--    v_v2 = _mm_add_epi32(v_v2, _mm_shuffle_epi32(v_v2, (int32_t)(177u)));
--    v_v2 = _mm_add_epi32(v_v2, _mm_shuffle_epi32(v_v2, (int32_t)(78u)));
--    v_s2 += ((uint32_t)(_mm_cvtsi128_si32(v_v2)));
--    v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551584u);
--    if (v_tail_index < ((uint64_t)(a_x.len))) {
--      {
--        wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index);
--        v_p.ptr = i_slice_p.ptr;
--        v_p.len = 1;
--        uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len;
--        while (v_p.ptr < i_end0_p) {
--          v_s1 += ((uint32_t)(v_p.ptr[0u]));
--          v_s2 += v_s1;
--          v_p.ptr += 1;
--        }
--        v_p.len = 0;
-+      return NULL;
-+
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+          if (wuffs_base__cpu_arch__have_x86_sse42()) {
-+            return wuffs_private_impl__swizzle_swap_rgbx_bgrx__x86_sse42;
-+          }
-+#endif
-+          return wuffs_private_impl__swizzle_swap_rgbx_bgrx;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_premul__rgba_premul__src_over;
-       }
--    }
--    v_s1 %= 65521u;
--    v_s2 %= 65521u;
--    a_x = v_remaining;
-+      return NULL;
-   }
--  self->private_impl.f_state = (((v_s2 & 65535u) << 16u) | (v_s1 & 65535u));
--  return wuffs_base__make_empty_struct();
-+  return NULL;
- }
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ADLER32)
-+static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
-+wuffs_private_impl__pixel_swizzler__prepare__bgrx(
-+    wuffs_base__pixel_swizzler* p,
-+    wuffs_base__pixel_format dst_pixfmt,
-+    wuffs_base__slice_u8 dst_palette,
-+    wuffs_base__slice_u8 src_palette,
-+    wuffs_base__pixel_blend blend) {
-+  switch (dst_pixfmt.repr) {
-+    case WUFFS_BASE__PIXEL_FORMAT__Y:
-+      return wuffs_private_impl__swizzle_y__bgrx;
- 
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BMP)
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
-+      return wuffs_private_impl__swizzle_bgr_565__bgrx;
- 
--// ---------------- Status Codes Implementations
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR:
-+      return wuffs_private_impl__swizzle_xxx__xxxx;
- 
--const char wuffs_bmp__error__bad_header[] = "#bmp: bad header";
--const char wuffs_bmp__error__bad_rle_compression[] = "#bmp: bad RLE compression";
--const char wuffs_bmp__error__truncated_input[] = "#bmp: truncated input";
--const char wuffs_bmp__error__unsupported_bmp_file[] = "#bmp: unsupported BMP file";
--const char wuffs_bmp__note__internal_note_short_read[] = "@bmp: internal note: short read";
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
-+      return wuffs_private_impl__swizzle_bgrw__bgrx;
- 
--// ---------------- Private Consts
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
-+      return wuffs_private_impl__swizzle_bgrw_4x16le__bgrx;
- 
--#define WUFFS_BMP__COMPRESSION_NONE 0
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
-+      return wuffs_private_impl__swizzle_copy_4_4;
- 
--#define WUFFS_BMP__COMPRESSION_RLE8 1
-+    case WUFFS_BASE__PIXEL_FORMAT__RGB:
-+      return wuffs_private_impl__swizzle_bgr__rgbx;
- 
--#define WUFFS_BMP__COMPRESSION_RLE4 2
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
-+      return wuffs_private_impl__swizzle_bgrw__rgbx;
-+  }
-+  return NULL;
-+}
- 
--#define WUFFS_BMP__COMPRESSION_BITFIELDS 3
-+static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
-+wuffs_private_impl__pixel_swizzler__prepare__rgb(
-+    wuffs_base__pixel_swizzler* p,
-+    wuffs_base__pixel_format dst_pixfmt,
-+    wuffs_base__slice_u8 dst_palette,
-+    wuffs_base__slice_u8 src_palette,
-+    wuffs_base__pixel_blend blend) {
-+  switch (dst_pixfmt.repr) {
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
-+      return wuffs_private_impl__swizzle_bgr_565__rgb;
- 
--#define WUFFS_BMP__COMPRESSION_JPEG 4
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR:
-+      return wuffs_private_impl__swizzle_swap_rgb_bgr;
- 
--#define WUFFS_BMP__COMPRESSION_PNG 5
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+      if (wuffs_base__cpu_arch__have_x86_sse42()) {
-+        return wuffs_private_impl__swizzle_bgrw__rgb__x86_sse42;
-+      }
-+#endif
-+      return wuffs_private_impl__swizzle_bgrw__rgb;
- 
--#define WUFFS_BMP__COMPRESSION_ALPHABITFIELDS 6
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
-+      return wuffs_private_impl__swizzle_bgrw_4x16le__rgb;
- 
--#define WUFFS_BMP__COMPRESSION_LOW_BIT_DEPTH 256
-+    case WUFFS_BASE__PIXEL_FORMAT__RGB:
-+      return wuffs_private_impl__swizzle_copy_3_3;
- 
--#define WUFFS_BMP__RLE_STATE_NEUTRAL 0
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+      if (wuffs_base__cpu_arch__have_x86_sse42()) {
-+        return wuffs_private_impl__swizzle_bgrw__bgr__x86_sse42;
-+      }
-+#endif
-+      return wuffs_private_impl__swizzle_bgrw__bgr;
-+  }
-+  return NULL;
-+}
- 
--#define WUFFS_BMP__RLE_STATE_RUN 1
-+static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
-+wuffs_private_impl__pixel_swizzler__prepare__rgba_nonpremul(
-+    wuffs_base__pixel_swizzler* p,
-+    wuffs_base__pixel_format dst_pixfmt,
-+    wuffs_base__slice_u8 dst_palette,
-+    wuffs_base__slice_u8 src_palette,
-+    wuffs_base__pixel_blend blend) {
-+  switch (dst_pixfmt.repr) {
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgr_565__rgba_nonpremul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgr_565__rgba_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--#define WUFFS_BMP__RLE_STATE_ESCAPE 2
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgr__rgba_nonpremul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgr__rgba_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--#define WUFFS_BMP__RLE_STATE_LITERAL 3
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+          if (wuffs_base__cpu_arch__have_x86_sse42()) {
-+            return wuffs_private_impl__swizzle_swap_rgbx_bgrx__x86_sse42;
-+          }
-+#endif
-+          return wuffs_private_impl__swizzle_swap_rgbx_bgrx;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul__rgba_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--#define WUFFS_BMP__RLE_STATE_DELTA_X 4
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__rgba_nonpremul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__rgba_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--#define WUFFS_BMP__RLE_STATE_DELTA_Y 5
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_premul__rgba_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--// ---------------- Private Initializer Prototypes
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
-+      // TODO.
-+      break;
- 
--// ---------------- Private Function Prototypes
-+    case WUFFS_BASE__PIXEL_FORMAT__RGB:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgr__bgra_nonpremul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgr__bgra_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bmp__decoder__do_decode_image_config(
--    wuffs_bmp__decoder* self,
--    wuffs_base__image_config* a_dst,
--    wuffs_base__io_buffer* a_src);
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_copy_4_4;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul__bgra_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bmp__decoder__do_decode_frame_config(
--    wuffs_bmp__decoder* self,
--    wuffs_base__frame_config* a_dst,
--    wuffs_base__io_buffer* a_src);
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_premul__bgra_nonpremul__src_over;
-+      }
-+      return NULL;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bmp__decoder__do_decode_frame(
--    wuffs_bmp__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts);
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
-+      // TODO.
-+      break;
-+  }
-+  return NULL;
-+}
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bmp__decoder__swizzle_none(
--    wuffs_bmp__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src);
-+static inline WUFFS_BASE__FORCE_INLINE wuffs_base__pixel_swizzler__func  //
-+wuffs_private_impl__pixel_swizzler__prepare__rgba_premul(
-+    wuffs_base__pixel_swizzler* p,
-+    wuffs_base__pixel_format dst_pixfmt,
-+    wuffs_base__slice_u8 dst_palette,
-+    wuffs_base__slice_u8 src_palette,
-+    wuffs_base__pixel_blend blend) {
-+  switch (dst_pixfmt.repr) {
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgr_565__rgba_premul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgr_565__rgba_premul__src_over;
-+      }
-+      return NULL;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bmp__decoder__swizzle_rle(
--    wuffs_bmp__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src);
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgr__rgba_premul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgr__rgba_premul__src_over;
-+      }
-+      return NULL;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bmp__decoder__swizzle_bitfields(
--    wuffs_bmp__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src);
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul__rgba_premul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul__rgba_premul__src_over;
-+      }
-+      return NULL;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bmp__decoder__swizzle_low_bit_depth(
--    wuffs_bmp__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bmp__decoder__do_tell_me_more(
--    wuffs_bmp__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__more_information* a_minfo,
--    wuffs_base__io_buffer* a_src);
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__rgba_premul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul_4x16le__rgba_premul__src_over;
-+      }
-+      return NULL;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bmp__decoder__read_palette(
--    wuffs_bmp__decoder* self,
--    wuffs_base__io_buffer* a_src);
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+          if (wuffs_base__cpu_arch__have_x86_sse42()) {
-+            return wuffs_private_impl__swizzle_swap_rgbx_bgrx__x86_sse42;
-+          }
-+#endif
-+          return wuffs_private_impl__swizzle_swap_rgbx_bgrx;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_premul__rgba_premul__src_over;
-+      }
-+      return NULL;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bmp__decoder__process_masks(
--    wuffs_bmp__decoder* self);
-+    case WUFFS_BASE__PIXEL_FORMAT__RGB:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgr__bgra_premul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgr__bgra_premul__src_over;
-+      }
-+      return NULL;
- 
--// ---------------- VTables
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul__bgra_premul__src;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_nonpremul__bgra_premul__src_over;
-+      }
-+      return NULL;
- 
--const wuffs_base__image_decoder__func_ptrs
--wuffs_bmp__decoder__func_ptrs_for__wuffs_base__image_decoder = {
--  (wuffs_base__status(*)(void*,
--      wuffs_base__pixel_buffer*,
--      wuffs_base__io_buffer*,
--      wuffs_base__pixel_blend,
--      wuffs_base__slice_u8,
--      wuffs_base__decode_frame_options*))(&wuffs_bmp__decoder__decode_frame),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__frame_config*,
--      wuffs_base__io_buffer*))(&wuffs_bmp__decoder__decode_frame_config),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__image_config*,
--      wuffs_base__io_buffer*))(&wuffs_bmp__decoder__decode_image_config),
--  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_bmp__decoder__frame_dirty_rect),
--  (uint64_t(*)(const void*,
--      uint32_t))(&wuffs_bmp__decoder__get_quirk),
--  (uint64_t(*)(const void*))(&wuffs_bmp__decoder__history_retain_length),
--  (uint32_t(*)(const void*))(&wuffs_bmp__decoder__num_animation_loops),
--  (uint64_t(*)(const void*))(&wuffs_bmp__decoder__num_decoded_frame_configs),
--  (uint64_t(*)(const void*))(&wuffs_bmp__decoder__num_decoded_frames),
--  (wuffs_base__status(*)(void*,
--      uint64_t,
--      uint64_t))(&wuffs_bmp__decoder__restart_frame),
--  (wuffs_base__status(*)(void*,
--      uint32_t,
--      uint64_t))(&wuffs_bmp__decoder__set_quirk),
--  (wuffs_base__empty_struct(*)(void*,
--      uint32_t,
--      bool))(&wuffs_bmp__decoder__set_report_metadata),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__io_buffer*,
--      wuffs_base__more_information*,
--      wuffs_base__io_buffer*))(&wuffs_bmp__decoder__tell_me_more),
--  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_bmp__decoder__workbuf_len),
--};
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
-+      switch (blend) {
-+        case WUFFS_BASE__PIXEL_BLEND__SRC:
-+          return wuffs_private_impl__swizzle_copy_4_4;
-+        case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+          return wuffs_private_impl__swizzle_bgra_premul__bgra_premul__src_over;
-+      }
-+      return NULL;
-+  }
-+  return NULL;
-+}
- 
--// ---------------- Initializer Implementations
-+// --------
- 
--wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_bmp__decoder__initialize(
--    wuffs_bmp__decoder* self,
--    size_t sizeof_star_self,
--    uint64_t wuffs_version,
--    uint32_t options){
--  if (!self) {
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status  //
-+wuffs_base__pixel_swizzler__prepare(wuffs_base__pixel_swizzler* p,
-+                                    wuffs_base__pixel_format dst_pixfmt,
-+                                    wuffs_base__slice_u8 dst_palette,
-+                                    wuffs_base__pixel_format src_pixfmt,
-+                                    wuffs_base__slice_u8 src_palette,
-+                                    wuffs_base__pixel_blend blend) {
-+  if (!p) {
-     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
--  if (sizeof(*self) != sizeof_star_self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
--  }
--  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
--      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
--    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
--  }
-+  p->private_impl.func = NULL;
-+  p->private_impl.transparent_black_func = NULL;
-+  p->private_impl.dst_pixfmt_bytes_per_pixel = 0;
-+  p->private_impl.src_pixfmt_bytes_per_pixel = 0;
- 
--  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
--    // The whole point of this if-check is to detect an uninitialized *self.
--    // We disable the warning on GCC. Clang-5.0 does not have this warning.
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+  // ----
-+
-+#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ENABLE_ALLOWLIST)
-+  switch (dst_pixfmt.repr) {
-+#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_BGR_565)
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
-+      break;
- #endif
--    if (self->private_impl.magic != 0) {
--      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
--    }
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic pop
-+#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_BGR)
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR:
-+      break;
- #endif
--  } else {
--    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
--      memset(self, 0, sizeof(*self));
--      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
--    } else {
--      memset(&(self->private_impl), 0, sizeof(self->private_impl));
--    }
-+#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_BGRA_NONPREMUL)
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
-+      break;
-+#endif
-+#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_BGRA_NONPREMUL_4X16LE)
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
-+      break;
-+#endif
-+#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_BGRA_PREMUL)
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
-+      break;
-+#endif
-+#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_RGB)
-+    case WUFFS_BASE__PIXEL_FORMAT__RGB:
-+      break;
-+#endif
-+#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_RGBA_NONPREMUL)
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
-+      break;
-+#endif
-+#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_RGBA_PREMUL)
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
-+      break;
-+#endif
-+    default:
-+      return wuffs_base__make_status(
-+          wuffs_base__error__disabled_by_wuffs_config_dst_pixel_format_enable_allowlist);
-   }
-+#endif  // defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ENABLE_ALLOWLIST)
- 
--  self->private_impl.magic = WUFFS_BASE__MAGIC;
--  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
--      wuffs_base__image_decoder__vtable_name;
--  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
--      (const void*)(&wuffs_bmp__decoder__func_ptrs_for__wuffs_base__image_decoder);
--  return wuffs_base__make_status(NULL);
--}
-+  // ----
- 
--wuffs_bmp__decoder*
--wuffs_bmp__decoder__alloc(void) {
--  wuffs_bmp__decoder* x =
--      (wuffs_bmp__decoder*)(calloc(sizeof(wuffs_bmp__decoder), 1));
--  if (!x) {
--    return NULL;
--  }
--  if (wuffs_bmp__decoder__initialize(
--      x, sizeof(wuffs_bmp__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
--    free(x);
--    return NULL;
-+  wuffs_base__pixel_swizzler__func func = NULL;
-+  wuffs_base__pixel_swizzler__transparent_black_func transparent_black_func =
-+      NULL;
-+
-+  uint32_t dst_pixfmt_bits_per_pixel =
-+      wuffs_base__pixel_format__bits_per_pixel(&dst_pixfmt);
-+  if ((dst_pixfmt_bits_per_pixel == 0) ||
-+      ((dst_pixfmt_bits_per_pixel & 7) != 0)) {
-+    return wuffs_base__make_status(
-+        wuffs_base__error__unsupported_pixel_swizzler_option);
-   }
--  return x;
--}
- 
--size_t
--sizeof__wuffs_bmp__decoder(void) {
--  return sizeof(wuffs_bmp__decoder);
--}
-+  uint32_t src_pixfmt_bits_per_pixel =
-+      wuffs_base__pixel_format__bits_per_pixel(&src_pixfmt);
-+  if ((src_pixfmt_bits_per_pixel == 0) ||
-+      ((src_pixfmt_bits_per_pixel & 7) != 0)) {
-+    return wuffs_base__make_status(
-+        wuffs_base__error__unsupported_pixel_swizzler_option);
-+  }
- 
--// ---------------- Function Implementations
-+  // TODO: support many more formats.
- 
--// -------- func bmp.decoder.get_quirk
-+  switch (blend) {
-+    case WUFFS_BASE__PIXEL_BLEND__SRC:
-+      transparent_black_func =
-+          wuffs_private_impl__swizzle_transparent_black_src;
-+      break;
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_bmp__decoder__get_quirk(
--    const wuffs_bmp__decoder* self,
--    uint32_t a_key) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
-+    case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
-+      transparent_black_func =
-+          wuffs_private_impl__swizzle_transparent_black_src_over;
-+      break;
-   }
- 
--  return 0u;
--}
-+  switch (src_pixfmt.repr) {
-+    case WUFFS_BASE__PIXEL_FORMAT__Y:
-+      func = wuffs_private_impl__pixel_swizzler__prepare__y(
-+          p, dst_pixfmt, dst_palette, src_palette, blend);
-+      break;
- 
--// -------- func bmp.decoder.set_quirk
-+    case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
-+      func = wuffs_private_impl__pixel_swizzler__prepare__y_16be(
-+          p, dst_pixfmt, dst_palette, src_palette, blend);
-+      break;
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_bmp__decoder__set_quirk(
--    wuffs_bmp__decoder* self,
--    uint32_t a_key,
--    uint64_t a_value) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
-+    case WUFFS_BASE__PIXEL_FORMAT__YA_NONPREMUL:
-+      func = wuffs_private_impl__pixel_swizzler__prepare__ya_nonpremul(
-+          p, dst_pixfmt, dst_palette, src_palette, blend);
-+      break;
-+
-+    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
-+      func =
-+          wuffs_private_impl__pixel_swizzler__prepare__indexed__bgra_nonpremul(
-+              p, dst_pixfmt, dst_palette, src_palette, blend);
-+      break;
-+
-+    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:
-+      func = wuffs_private_impl__pixel_swizzler__prepare__indexed__bgra_binary(
-+          p, dst_pixfmt, dst_palette, src_palette, blend);
-+      break;
-+
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
-+      func = wuffs_private_impl__pixel_swizzler__prepare__bgr_565(
-+          p, dst_pixfmt, dst_palette, src_palette, blend);
-+      break;
-+
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR:
-+      func = wuffs_private_impl__pixel_swizzler__prepare__bgr(
-+          p, dst_pixfmt, dst_palette, src_palette, blend);
-+      break;
-+
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
-+      func = wuffs_private_impl__pixel_swizzler__prepare__bgra_nonpremul(
-+          p, dst_pixfmt, dst_palette, src_palette, blend);
-+      break;
-+
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
-+      func = wuffs_private_impl__pixel_swizzler__prepare__bgra_nonpremul_4x16le(
-+          p, dst_pixfmt, dst_palette, src_palette, blend);
-+      break;
-+
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
-+      func = wuffs_private_impl__pixel_swizzler__prepare__bgra_premul(
-+          p, dst_pixfmt, dst_palette, src_palette, blend);
-+      break;
-+
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
-+      func = wuffs_private_impl__pixel_swizzler__prepare__bgrx(
-+          p, dst_pixfmt, dst_palette, src_palette, blend);
-+      break;
-+
-+    case WUFFS_BASE__PIXEL_FORMAT__RGB:
-+      func = wuffs_private_impl__pixel_swizzler__prepare__rgb(
-+          p, dst_pixfmt, dst_palette, src_palette, blend);
-+      break;
-+
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
-+      func = wuffs_private_impl__pixel_swizzler__prepare__rgba_nonpremul(
-+          p, dst_pixfmt, dst_palette, src_palette, blend);
-+      break;
-+
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
-+      func = wuffs_private_impl__pixel_swizzler__prepare__rgba_premul(
-+          p, dst_pixfmt, dst_palette, src_palette, blend);
-+      break;
-   }
- 
--  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+  p->private_impl.func = func;
-+  p->private_impl.transparent_black_func = transparent_black_func;
-+  p->private_impl.dst_pixfmt_bytes_per_pixel = dst_pixfmt_bits_per_pixel / 8;
-+  p->private_impl.src_pixfmt_bytes_per_pixel = src_pixfmt_bits_per_pixel / 8;
-+  return wuffs_base__make_status(
-+      func ? NULL : wuffs_base__error__unsupported_pixel_swizzler_option);
- }
- 
--// -------- func bmp.decoder.decode_image_config
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_bmp__decoder__decode_image_config(
--    wuffs_bmp__decoder* self,
--    wuffs_base__image_config* a_dst,
--    wuffs_base__io_buffer* a_src) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+WUFFS_BASE__MAYBE_STATIC uint64_t  //
-+wuffs_base__pixel_swizzler__limited_swizzle_u32_interleaved_from_reader(
-+    const wuffs_base__pixel_swizzler* p,
-+    uint32_t up_to_num_pixels,
-+    wuffs_base__slice_u8 dst,
-+    wuffs_base__slice_u8 dst_palette,
-+    const uint8_t** ptr_iop_r,
-+    const uint8_t* io2_r) {
-+  if (p && p->private_impl.func) {
-+    const uint8_t* iop_r = *ptr_iop_r;
-+    uint64_t src_len = wuffs_base__u64__min(
-+        ((uint64_t)up_to_num_pixels) *
-+            ((uint64_t)p->private_impl.src_pixfmt_bytes_per_pixel),
-+        ((uint64_t)(io2_r - iop_r)));
-+    uint64_t n =
-+        (*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr,
-+                                dst_palette.len, iop_r, (size_t)src_len);
-+    *ptr_iop_r += n * p->private_impl.src_pixfmt_bytes_per_pixel;
-+    return n;
-   }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
-+  return 0;
-+}
-+
-+WUFFS_BASE__MAYBE_STATIC uint64_t  //
-+wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
-+    const wuffs_base__pixel_swizzler* p,
-+    wuffs_base__slice_u8 dst,
-+    wuffs_base__slice_u8 dst_palette,
-+    const uint8_t** ptr_iop_r,
-+    const uint8_t* io2_r) {
-+  if (p && p->private_impl.func) {
-+    const uint8_t* iop_r = *ptr_iop_r;
-+    uint64_t src_len = ((uint64_t)(io2_r - iop_r));
-+    uint64_t n =
-+        (*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr,
-+                                dst_palette.len, iop_r, (size_t)src_len);
-+    *ptr_iop_r += n * p->private_impl.src_pixfmt_bytes_per_pixel;
-+    return n;
-   }
--  if (!a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  return 0;
-+}
-+
-+WUFFS_BASE__MAYBE_STATIC uint64_t  //
-+wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(
-+    const wuffs_base__pixel_swizzler* p,
-+    wuffs_base__slice_u8 dst,
-+    wuffs_base__slice_u8 dst_palette,
-+    wuffs_base__slice_u8 src) {
-+  if (p && p->private_impl.func) {
-+    return (*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr,
-+                                   dst_palette.len, src.ptr, src.len);
-   }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 1)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  return 0;
-+}
-+
-+WUFFS_BASE__MAYBE_STATIC uint64_t  //
-+wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(
-+    const wuffs_base__pixel_swizzler* p,
-+    wuffs_base__slice_u8 dst,
-+    wuffs_base__slice_u8 dst_palette,
-+    uint64_t num_pixels) {
-+  if (p && p->private_impl.transparent_black_func) {
-+    return (*p->private_impl.transparent_black_func)(
-+        dst.ptr, dst.len, dst_palette.ptr, dst_palette.len, num_pixels,
-+        p->private_impl.dst_pixfmt_bytes_per_pixel);
-   }
--  self->private_impl.active_coroutine = 0;
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+  return 0;
-+}
- 
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+// --------
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
-+WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
-+static void  //
-+wuffs_private_impl__swizzle_ycc__convert_3_bgrx_x86_avx2(
-+    wuffs_base__pixel_buffer* dst,
-+    uint32_t x,
-+    uint32_t x_end,
-+    uint32_t y,
-+    const uint8_t* up0,
-+    const uint8_t* up1,
-+    const uint8_t* up2);
- 
--    while (true) {
--      {
--        wuffs_base__status t_0 = wuffs_bmp__decoder__do_decode_image_config(self, a_dst, a_src);
--        v_status = t_0;
--      }
--      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_bmp__error__truncated_input);
--        goto exit;
--      }
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
--    }
-+WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
-+static void  //
-+wuffs_private_impl__swizzle_ycc__convert_3_rgbx_x86_avx2(
-+    wuffs_base__pixel_buffer* dst,
-+    uint32_t x,
-+    uint32_t x_end,
-+    uint32_t y,
-+    const uint8_t* up0,
-+    const uint8_t* up1,
-+    const uint8_t* up2);
- 
--    ok:
--    self->private_impl.p_decode_image_config[0] = 0;
--    goto exit;
--  }
-+#if defined(__GNUC__) && !defined(__clang__)
-+// No-op.
-+#else
-+WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
-+static const uint8_t*  //
-+wuffs_private_impl__swizzle_ycc__upsample_inv_h2v2_triangle_x86_avx2(
-+    uint8_t* dst_ptr,
-+    const uint8_t* src_ptr_major,
-+    const uint8_t* src_ptr_minor,
-+    size_t src_len,
-+    uint32_t h1v2_bias_ignored,
-+    bool first_column,
-+    bool last_column);
-+#endif
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
-+// --------
- 
--  goto exit;
--  exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--  }
--  return status;
-+static inline uint32_t  //
-+wuffs_private_impl__u32__max_of_4(uint32_t a,
-+                                  uint32_t b,
-+                                  uint32_t c,
-+                                  uint32_t d) {
-+  return wuffs_base__u32__max(     //
-+      wuffs_base__u32__max(a, b),  //
-+      wuffs_base__u32__max(c, d));
- }
- 
--// -------- func bmp.decoder.do_decode_image_config
-+static inline uint32_t  //
-+wuffs_private_impl__u32__min_of_5(uint32_t a,
-+                                  uint32_t b,
-+                                  uint32_t c,
-+                                  uint32_t d,
-+                                  uint32_t e) {
-+  return wuffs_base__u32__min(          //
-+      wuffs_base__u32__min(             //
-+          wuffs_base__u32__min(a, b),   //
-+          wuffs_base__u32__min(c, d)),  //
-+      e);
-+}
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bmp__decoder__do_decode_image_config(
--    wuffs_bmp__decoder* self,
--    wuffs_base__image_config* a_dst,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+// --------
- 
--  uint32_t v_magic = 0;
--  uint32_t v_width = 0;
--  uint32_t v_height = 0;
--  uint32_t v_planes = 0;
--  uint32_t v_dst_pixfmt = 0;
--  uint32_t v_byte_width = 0;
-+typedef void (*wuffs_private_impl__swizzle_ycc__convert_4_func)(
-+    wuffs_base__pixel_buffer* dst,
-+    uint32_t x,
-+    uint32_t x_end,
-+    uint32_t y,
-+    const uint8_t* up0,
-+    const uint8_t* up1,
-+    const uint8_t* up2,
-+    const uint8_t* up3);
- 
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
-+static void  //
-+wuffs_private_impl__swizzle_cmyk__convert_4_general(
-+    wuffs_base__pixel_buffer* dst,
-+    uint32_t x,
-+    uint32_t x_end,
-+    uint32_t y,
-+    const uint8_t* up0,
-+    const uint8_t* up1,
-+    const uint8_t* up2,
-+    const uint8_t* up3) {
-+  for (; x < x_end; x++) {
-+    // It's called CMYK but, but for Adobe CMYK JPEG images in practice, it's
-+    // RGBW: 0xFFu means no ink instead of full ink. Note that a double
-+    // inversion is a no-op, so inversions might be implicit in the code below.
-+    uint32_t r = ((uint32_t)(*up0++));
-+    uint32_t g = ((uint32_t)(*up1++));
-+    uint32_t b = ((uint32_t)(*up2++));
-+    uint32_t w = ((uint32_t)(*up3++));
-+    r = ((r * w) + 0x7Fu) / 0xFFu;
-+    g = ((g * w) + 0x7Fu) / 0xFFu;
-+    b = ((b * w) + 0x7Fu) / 0xFFu;
-+    wuffs_base__pixel_buffer__set_color_u32_at(
-+        dst, x, y, 0xFF000000u | (r << 16u) | (g << 8u) | (b << 0u));
-   }
-+}
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+static void  //
-+wuffs_private_impl__swizzle_ycck__convert_4_general(
-+    wuffs_base__pixel_buffer* dst,
-+    uint32_t x,
-+    uint32_t x_end,
-+    uint32_t y,
-+    const uint8_t* up0,
-+    const uint8_t* up1,
-+    const uint8_t* up2,
-+    const uint8_t* up3) {
-+  for (; x < x_end; x++) {
-+    // We invert once again: 0xFFu means no ink instead of full ink.
-+    uint32_t color =                           //
-+        wuffs_base__color_ycc__as__color_u32(  //
-+            *up0++, *up1++, *up2++);
-+    uint32_t r = 0xFFu - (0xFFu & (color >> 16u));
-+    uint32_t g = 0xFFu - (0xFFu & (color >> 8u));
-+    uint32_t b = 0xFFu - (0xFFu & (color >> 0u));
-+    uint32_t w = ((uint32_t)(*up3++));
-+    r = ((r * w) + 0x7Fu) / 0xFFu;
-+    g = ((g * w) + 0x7Fu) / 0xFFu;
-+    b = ((b * w) + 0x7Fu) / 0xFFu;
-+    wuffs_base__pixel_buffer__set_color_u32_at(
-+        dst, x, y, 0xFF000000u | (r << 16u) | (g << 8u) | (b << 0u));
-+  }
-+}
- 
--    if ((self->private_impl.f_call_sequence != 0u) || (self->private_impl.f_io_redirect_fourcc == 1u)) {
--      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
--      goto exit;
--    } else if (self->private_impl.f_io_redirect_fourcc != 0u) {
--      status = wuffs_base__make_status(wuffs_base__note__i_o_redirect);
--      goto ok;
--    }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      uint32_t t_0;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--        t_0 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--        iop_a_src += 2;
--      } else {
--        self->private_data.s_do_decode_image_config[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
--          *scratch <<= 8;
--          *scratch >>= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
--          if (num_bits_0 == 8) {
--            t_0 = ((uint32_t)(*scratch));
--            break;
--          }
--          num_bits_0 += 8u;
--          *scratch |= ((uint64_t)(num_bits_0)) << 56;
--        }
--      }
--      v_magic = t_0;
--    }
--    if (v_magic != 19778u) {
--      status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
--      goto exit;
--    }
--    self->private_data.s_do_decode_image_config[0].scratch = 8u;
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--    if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--      self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--      iop_a_src = io2_a_src;
--      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--      goto suspend;
-+// --------
-+
-+typedef void (*wuffs_private_impl__swizzle_ycc__convert_3_func)(
-+    wuffs_base__pixel_buffer* dst,
-+    uint32_t x,
-+    uint32_t x_end,
-+    uint32_t y,
-+    const uint8_t* up0,
-+    const uint8_t* up1,
-+    const uint8_t* up2);
-+
-+static void  //
-+wuffs_private_impl__swizzle_rgb__convert_3_general(
-+    wuffs_base__pixel_buffer* dst,
-+    uint32_t x,
-+    uint32_t x_end,
-+    uint32_t y,
-+    const uint8_t* up0,
-+    const uint8_t* up1,
-+    const uint8_t* up2) {
-+  for (; x < x_end; x++) {
-+    uint32_t color = 0xFF000000u |                    //
-+                     (((uint32_t)(*up0++)) << 16u) |  //
-+                     (((uint32_t)(*up1++)) << 8u) |   //
-+                     (((uint32_t)(*up2++)) << 0u);
-+    wuffs_base__pixel_buffer__set_color_u32_at(dst, x, y, color);
-+  }
-+}
-+
-+static void  //
-+wuffs_private_impl__swizzle_ycc__convert_3_general(
-+    wuffs_base__pixel_buffer* dst,
-+    uint32_t x,
-+    uint32_t x_end,
-+    uint32_t y,
-+    const uint8_t* up0,
-+    const uint8_t* up1,
-+    const uint8_t* up2) {
-+  for (; x < x_end; x++) {
-+    uint32_t color =                           //
-+        wuffs_base__color_ycc__as__color_u32(  //
-+            *up0++, *up1++, *up2++);
-+    wuffs_base__pixel_buffer__set_color_u32_at(dst, x, y, color);
-+  }
-+}
-+
-+static void  //
-+wuffs_private_impl__swizzle_ycc__convert_3_bgrx(wuffs_base__pixel_buffer* dst,
-+                                                uint32_t x,
-+                                                uint32_t x_end,
-+                                                uint32_t y,
-+                                                const uint8_t* up0,
-+                                                const uint8_t* up1,
-+                                                const uint8_t* up2) {
-+  size_t dst_stride = dst->private_impl.planes[0].stride;
-+  uint8_t* dst_iter = dst->private_impl.planes[0].ptr +
-+                      (dst_stride * ((size_t)y)) + (4u * ((size_t)x));
-+
-+  for (; x < x_end; x++) {
-+    uint32_t color =                           //
-+        wuffs_base__color_ycc__as__color_u32(  //
-+            *up0++, *up1++, *up2++);
-+    wuffs_base__poke_u32le__no_bounds_check(dst_iter, color);
-+    dst_iter += 4u;
-+  }
-+}
-+
-+static void  //
-+wuffs_private_impl__swizzle_ycc__convert_3_rgbx(wuffs_base__pixel_buffer* dst,
-+                                                uint32_t x,
-+                                                uint32_t x_end,
-+                                                uint32_t y,
-+                                                const uint8_t* up0,
-+                                                const uint8_t* up1,
-+                                                const uint8_t* up2) {
-+  size_t dst_stride = dst->private_impl.planes[0].stride;
-+  uint8_t* dst_iter = dst->private_impl.planes[0].ptr +
-+                      (dst_stride * ((size_t)y)) + (4u * ((size_t)x));
-+
-+  for (; x < x_end; x++) {
-+    uint32_t color =                                //
-+        wuffs_base__color_ycc__as__color_u32_abgr(  //
-+            *up0++, *up1++, *up2++);
-+    wuffs_base__poke_u32le__no_bounds_check(dst_iter, color);
-+    dst_iter += 4u;
-+  }
-+}
-+
-+// --------
-+
-+// wuffs_private_impl__swizzle_ycc__upsample_func upsamples to a destination
-+// slice at least 480 (YCCK) or 672 (YCC) bytes long and whose src_len
-+// (multiplied by 1, 2, 3 or 4) is positive but no more than that. This 480 or
-+// 672 length is just under 1/4 or 1/3 of the scratch_buffer_2k slice length.
-+// Both (480 * 4) = 1920 and (672 * 3) = 2016 are less than 2048.
-+//
-+// 480 and 672 are nice round numbers because a JPEG MCU is 1, 2, 3 or 4 blocks
-+// wide and each block is 8 pixels wide. We have:
-+//   480 = 1 * 8 * 60,   672 = 1 * 8 * 84
-+//   480 = 2 * 8 * 30,   672 = 2 * 8 * 42
-+//   480 = 3 * 8 * 20,   672 = 3 * 8 * 28
-+//   480 = 4 * 8 * 15,   672 = 4 * 8 * 21
-+//
-+// Box filters are equivalent to nearest neighbor upsampling. These ignore the
-+// src_ptr_minor, h1v2_bias, first_column and last_column arguments.
-+//
-+// Triangle filters use a 3:1 ratio (in 1 dimension), or 9:3:3:1 (in 2
-+// dimensions), which is higher quality (less blocky) but also higher
-+// computational effort.
-+//
-+// In theory, we could use triangle filters for any (inv_h, inv_v) combination.
-+// In practice, matching libjpeg-turbo, we only implement it for the common
-+// chroma subsampling ratios (YCC420, YCC422 or YCC440), corresponding to an
-+// (inv_h, inv_v) pair of (2, 2), (2, 1) or (1, 2).
-+typedef const uint8_t* (*wuffs_private_impl__swizzle_ycc__upsample_func)(
-+    uint8_t* dst_ptr,
-+    const uint8_t* src_ptr_major,  // Nearest row.
-+    const uint8_t* src_ptr_minor,  // Adjacent row, alternating above or below.
-+    size_t src_len,
-+    uint32_t h1v2_bias,
-+    bool first_column,
-+    bool last_column);
-+
-+static const uint8_t*  //
-+wuffs_private_impl__swizzle_ycc__upsample_inv_h1vn_box(
-+    uint8_t* dst_ptr,
-+    const uint8_t* src_ptr_major,
-+    const uint8_t* src_ptr_minor_ignored,
-+    size_t src_len,
-+    uint32_t h1v2_bias_ignored,
-+    bool first_column_ignored,
-+    bool last_column_ignored) {
-+  return src_ptr_major;
-+}
-+
-+static const uint8_t*  //
-+wuffs_private_impl__swizzle_ycc__upsample_inv_h2vn_box(
-+    uint8_t* dst_ptr,
-+    const uint8_t* src_ptr_major,
-+    const uint8_t* src_ptr_minor_ignored,
-+    size_t src_len,
-+    uint32_t h1v2_bias_ignored,
-+    bool first_column_ignored,
-+    bool last_column_ignored) {
-+  uint8_t* dp = dst_ptr;
-+  const uint8_t* sp = src_ptr_major;
-+  while (src_len--) {
-+    uint8_t sv = *sp++;
-+    *dp++ = sv;
-+    *dp++ = sv;
-+  }
-+  return dst_ptr;
-+}
-+
-+static const uint8_t*  //
-+wuffs_private_impl__swizzle_ycc__upsample_inv_h3vn_box(
-+    uint8_t* dst_ptr,
-+    const uint8_t* src_ptr_major,
-+    const uint8_t* src_ptr_minor_ignored,
-+    size_t src_len,
-+    uint32_t h1v2_bias_ignored,
-+    bool first_column_ignored,
-+    bool last_column_ignored) {
-+  uint8_t* dp = dst_ptr;
-+  const uint8_t* sp = src_ptr_major;
-+  while (src_len--) {
-+    uint8_t sv = *sp++;
-+    *dp++ = sv;
-+    *dp++ = sv;
-+    *dp++ = sv;
-+  }
-+  return dst_ptr;
-+}
-+
-+static const uint8_t*  //
-+wuffs_private_impl__swizzle_ycc__upsample_inv_h4vn_box(
-+    uint8_t* dst_ptr,
-+    const uint8_t* src_ptr_major,
-+    const uint8_t* src_ptr_minor_ignored,
-+    size_t src_len,
-+    uint32_t h1v2_bias_ignored,
-+    bool first_column_ignored,
-+    bool last_column_ignored) {
-+  uint8_t* dp = dst_ptr;
-+  const uint8_t* sp = src_ptr_major;
-+  while (src_len--) {
-+    uint8_t sv = *sp++;
-+    *dp++ = sv;
-+    *dp++ = sv;
-+    *dp++ = sv;
-+    *dp++ = sv;
-+  }
-+  return dst_ptr;
-+}
-+
-+static const uint8_t*  //
-+wuffs_private_impl__swizzle_ycc__upsample_inv_h1v2_triangle(
-+    uint8_t* dst_ptr,
-+    const uint8_t* src_ptr_major,
-+    const uint8_t* src_ptr_minor,
-+    size_t src_len,
-+    uint32_t h1v2_bias,
-+    bool first_column,
-+    bool last_column) {
-+  uint8_t* dp = dst_ptr;
-+  const uint8_t* sp_major = src_ptr_major;
-+  const uint8_t* sp_minor = src_ptr_minor;
-+  while (src_len--) {
-+    *dp++ = (uint8_t)(((3u * ((uint32_t)(*sp_major++))) +  //
-+                       (1u * ((uint32_t)(*sp_minor++))) +  //
-+                       h1v2_bias) >>
-+                      2u);
-+  }
-+  return dst_ptr;
-+}
-+
-+static const uint8_t*  //
-+wuffs_private_impl__swizzle_ycc__upsample_inv_h2v1_triangle(
-+    uint8_t* dst_ptr,
-+    const uint8_t* src_ptr_major,
-+    const uint8_t* src_ptr_minor,
-+    size_t src_len,
-+    uint32_t h1v2_bias_ignored,
-+    bool first_column,
-+    bool last_column) {
-+  uint8_t* dp = dst_ptr;
-+  const uint8_t* sp = src_ptr_major;
-+
-+  if (first_column) {
-+    src_len--;
-+    if ((src_len <= 0u) && last_column) {
-+      uint8_t sv = *sp++;
-+      *dp++ = sv;
-+      *dp++ = sv;
-+      return dst_ptr;
-     }
--    iop_a_src += self->private_data.s_do_decode_image_config[0].scratch;
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--      uint32_t t_1;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--        iop_a_src += 4;
--      } else {
--        self->private_data.s_do_decode_image_config[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
--          *scratch <<= 8;
--          *scratch >>= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
--          if (num_bits_1 == 24) {
--            t_1 = ((uint32_t)(*scratch));
--            break;
--          }
--          num_bits_1 += 8u;
--          *scratch |= ((uint64_t)(num_bits_1)) << 56;
--        }
--      }
--      self->private_impl.f_padding = t_1;
-+    uint32_t svp1 = sp[+1];
-+    uint8_t sv = *sp++;
-+    *dp++ = sv;
-+    *dp++ = (uint8_t)(((3u * (uint32_t)sv) + svp1 + 2u) >> 2u);
-+    if (src_len <= 0u) {
-+      return dst_ptr;
-     }
--    if (self->private_impl.f_padding < 14u) {
--      status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
--      goto exit;
-+  }
-+
-+  if (last_column) {
-+    src_len--;
-+  }
-+
-+  for (; src_len > 0u; src_len--) {
-+    uint32_t svm1 = sp[-1];
-+    uint32_t svp1 = sp[+1];
-+    uint32_t sv3 = 3u * (uint32_t)(*sp++);
-+    *dp++ = (uint8_t)((sv3 + svm1 + 1u) >> 2u);
-+    *dp++ = (uint8_t)((sv3 + svp1 + 2u) >> 2u);
-+  }
-+
-+  if (last_column) {
-+    uint32_t svm1 = sp[-1];
-+    uint8_t sv = *sp++;
-+    *dp++ = (uint8_t)(((3u * (uint32_t)sv) + svm1 + 1u) >> 2u);
-+    *dp++ = sv;
-+  }
-+
-+  return dst_ptr;
-+}
-+
-+static const uint8_t*  //
-+wuffs_private_impl__swizzle_ycc__upsample_inv_h2v2_triangle(
-+    uint8_t* dst_ptr,
-+    const uint8_t* src_ptr_major,
-+    const uint8_t* src_ptr_minor,
-+    size_t src_len,
-+    uint32_t h1v2_bias_ignored,
-+    bool first_column,
-+    bool last_column) {
-+  uint8_t* dp = dst_ptr;
-+  const uint8_t* sp_major = src_ptr_major;
-+  const uint8_t* sp_minor = src_ptr_minor;
-+
-+  if (first_column) {
-+    src_len--;
-+    if ((src_len <= 0u) && last_column) {
-+      uint32_t sv = (12u * ((uint32_t)(*sp_major++))) +  //
-+                    (4u * ((uint32_t)(*sp_minor++)));
-+      *dp++ = (uint8_t)((sv + 8u) >> 4u);
-+      *dp++ = (uint8_t)((sv + 7u) >> 4u);
-+      return dst_ptr;
-     }
--    self->private_impl.f_padding -= 14u;
--    self->private_impl.f_io_redirect_pos = wuffs_base__u64__sat_add(((uint64_t)(self->private_impl.f_padding)), wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))));
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--      uint32_t t_2;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--        iop_a_src += 4;
--      } else {
--        self->private_data.s_do_decode_image_config[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--          uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
--          *scratch <<= 8;
--          *scratch >>= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
--          if (num_bits_2 == 24) {
--            t_2 = ((uint32_t)(*scratch));
--            break;
--          }
--          num_bits_2 += 8u;
--          *scratch |= ((uint64_t)(num_bits_2)) << 56;
--        }
--      }
--      self->private_impl.f_bitmap_info_len = t_2;
-+
-+    uint32_t sv_major_m1 = sp_major[-0];  // Clamp offset to zero.
-+    uint32_t sv_minor_m1 = sp_minor[-0];  // Clamp offset to zero.
-+    uint32_t sv_major_p1 = sp_major[+1];
-+    uint32_t sv_minor_p1 = sp_minor[+1];
-+
-+    uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
-+                  (3u * ((uint32_t)(*sp_minor++)));
-+    *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
-+    *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
-+    if (src_len <= 0u) {
-+      return dst_ptr;
-     }
--    if (self->private_impl.f_padding < self->private_impl.f_bitmap_info_len) {
--      status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
--      goto exit;
-+  }
-+
-+  if (last_column) {
-+    src_len--;
-+  }
-+
-+  for (; src_len > 0u; src_len--) {
-+    uint32_t sv_major_m1 = sp_major[-1];
-+    uint32_t sv_minor_m1 = sp_minor[-1];
-+    uint32_t sv_major_p1 = sp_major[+1];
-+    uint32_t sv_minor_p1 = sp_minor[+1];
-+
-+    uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
-+                  (3u * ((uint32_t)(*sp_minor++)));
-+    *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
-+    *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
-+  }
-+
-+  if (last_column) {
-+    uint32_t sv_major_m1 = sp_major[-1];
-+    uint32_t sv_minor_m1 = sp_minor[-1];
-+    uint32_t sv_major_p1 = sp_major[+0];  // Clamp offset to zero.
-+    uint32_t sv_minor_p1 = sp_minor[+0];  // Clamp offset to zero.
-+
-+    uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
-+                  (3u * ((uint32_t)(*sp_minor++)));
-+    *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
-+    *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
-+  }
-+
-+  return dst_ptr;
-+}
-+
-+// wuffs_private_impl__swizzle_ycc__upsample_funcs is indexed by inv_h and then
-+// inv_v.
-+static const wuffs_private_impl__swizzle_ycc__upsample_func
-+    wuffs_private_impl__swizzle_ycc__upsample_funcs[4][4] = {
-+        {
-+            wuffs_private_impl__swizzle_ycc__upsample_inv_h1vn_box,
-+            wuffs_private_impl__swizzle_ycc__upsample_inv_h1vn_box,
-+            wuffs_private_impl__swizzle_ycc__upsample_inv_h1vn_box,
-+            wuffs_private_impl__swizzle_ycc__upsample_inv_h1vn_box,
-+        },
-+        {
-+            wuffs_private_impl__swizzle_ycc__upsample_inv_h2vn_box,
-+            wuffs_private_impl__swizzle_ycc__upsample_inv_h2vn_box,
-+            wuffs_private_impl__swizzle_ycc__upsample_inv_h2vn_box,
-+            wuffs_private_impl__swizzle_ycc__upsample_inv_h2vn_box,
-+        },
-+        {
-+            wuffs_private_impl__swizzle_ycc__upsample_inv_h3vn_box,
-+            wuffs_private_impl__swizzle_ycc__upsample_inv_h3vn_box,
-+            wuffs_private_impl__swizzle_ycc__upsample_inv_h3vn_box,
-+            wuffs_private_impl__swizzle_ycc__upsample_inv_h3vn_box,
-+        },
-+        {
-+            wuffs_private_impl__swizzle_ycc__upsample_inv_h4vn_box,
-+            wuffs_private_impl__swizzle_ycc__upsample_inv_h4vn_box,
-+            wuffs_private_impl__swizzle_ycc__upsample_inv_h4vn_box,
-+            wuffs_private_impl__swizzle_ycc__upsample_inv_h4vn_box,
-+        },
-+};
-+
-+static inline uint32_t  //
-+wuffs_private_impl__swizzle_has_triangle_upsampler(uint32_t inv_h,
-+                                                   uint32_t inv_v) {
-+  if (inv_h == 1u) {
-+    return inv_v == 2u;
-+  } else if (inv_h == 2u) {
-+    return (inv_v == 1u) || (inv_v == 2u);
-+  }
-+  return false;
-+}
-+
-+// --------
-+
-+// All of the wuffs_private_impl__swizzle_ycc__etc functions have
-+// preconditions. See all of the checks made in
-+// wuffs_base__pixel_swizzler__swizzle_ycck before calling these functions. For
-+// example, (width > 0) is a precondition, but there are many more.
-+
-+static void  //
-+wuffs_private_impl__swizzle_ycck__general__triangle_filter_edge_row(
-+    wuffs_base__pixel_buffer* dst,
-+    uint32_t width,
-+    uint32_t y,
-+    const uint8_t* src_ptr0,
-+    const uint8_t* src_ptr1,
-+    const uint8_t* src_ptr2,
-+    const uint8_t* src_ptr3,
-+    uint32_t stride0,
-+    uint32_t stride1,
-+    uint32_t stride2,
-+    uint32_t stride3,
-+    uint32_t inv_h0,
-+    uint32_t inv_h1,
-+    uint32_t inv_h2,
-+    uint32_t inv_h3,
-+    uint32_t inv_v0,
-+    uint32_t inv_v1,
-+    uint32_t inv_v2,
-+    uint32_t inv_v3,
-+    uint32_t half_width_for_2to1,
-+    uint32_t h1v2_bias,
-+    uint8_t* scratch_buffer_2k_ptr,
-+    wuffs_private_impl__swizzle_ycc__upsample_func upfunc0,
-+    wuffs_private_impl__swizzle_ycc__upsample_func upfunc1,
-+    wuffs_private_impl__swizzle_ycc__upsample_func upfunc2,
-+    wuffs_private_impl__swizzle_ycc__upsample_func upfunc3,
-+    wuffs_private_impl__swizzle_ycc__convert_4_func conv4func) {
-+  const uint8_t* src0 = src_ptr0 + ((y / inv_v0) * (size_t)stride0);
-+  const uint8_t* src1 = src_ptr1 + ((y / inv_v1) * (size_t)stride1);
-+  const uint8_t* src2 = src_ptr2 + ((y / inv_v2) * (size_t)stride2);
-+  const uint8_t* src3 = src_ptr3 + ((y / inv_v3) * (size_t)stride3);
-+  uint32_t total_src_len0 = 0u;
-+  uint32_t total_src_len1 = 0u;
-+  uint32_t total_src_len2 = 0u;
-+  uint32_t total_src_len3 = 0u;
-+
-+  uint32_t x = 0u;
-+  while (x < width) {
-+    bool first_column = x == 0u;
-+    uint32_t end = x + 480u;
-+    if (end > width) {
-+      end = width;
-     }
--    self->private_impl.f_padding -= self->private_impl.f_bitmap_info_len;
--    if (self->private_impl.f_bitmap_info_len == 12u) {
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
--        uint32_t t_3;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--          t_3 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--          iop_a_src += 2;
--        } else {
--          self->private_data.s_do_decode_image_config[0].scratch = 0;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--            uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
--            *scratch <<= 8;
--            *scratch >>= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
--            if (num_bits_3 == 8) {
--              t_3 = ((uint32_t)(*scratch));
--              break;
--            }
--            num_bits_3 += 8u;
--            *scratch |= ((uint64_t)(num_bits_3)) << 56;
--          }
--        }
--        self->private_impl.f_width = t_3;
-+
-+    uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0;
-+    uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1;
-+    uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2;
-+    uint32_t src_len3 = ((end - x) + inv_h3 - 1u) / inv_h3;
-+    total_src_len0 += src_len0;
-+    total_src_len1 += src_len1;
-+    total_src_len2 += src_len2;
-+    total_src_len3 += src_len3;
-+
-+    const uint8_t* src_ptr_x0 = src0 + (x / inv_h0);
-+    const uint8_t* up0 = (*upfunc0)(          //
-+        scratch_buffer_2k_ptr + (0u * 480u),  //
-+        src_ptr_x0,                           //
-+        src_ptr_x0,                           //
-+        src_len0,                             //
-+        h1v2_bias,                            //
-+        first_column,                         //
-+        (total_src_len0 >= half_width_for_2to1));
-+
-+    const uint8_t* src_ptr_x1 = src1 + (x / inv_h1);
-+    const uint8_t* up1 = (*upfunc1)(          //
-+        scratch_buffer_2k_ptr + (1u * 480u),  //
-+        src_ptr_x1,                           //
-+        src_ptr_x1,                           //
-+        src_len1,                             //
-+        h1v2_bias,                            //
-+        first_column,                         //
-+        (total_src_len1 >= half_width_for_2to1));
-+
-+    const uint8_t* src_ptr_x2 = src2 + (x / inv_h2);
-+    const uint8_t* up2 = (*upfunc2)(          //
-+        scratch_buffer_2k_ptr + (2u * 480u),  //
-+        src_ptr_x2,                           //
-+        src_ptr_x2,                           //
-+        src_len2,                             //
-+        h1v2_bias,                            //
-+        first_column,                         //
-+        (total_src_len2 >= half_width_for_2to1));
-+
-+    const uint8_t* src_ptr_x3 = src3 + (x / inv_h3);
-+    const uint8_t* up3 = (*upfunc3)(          //
-+        scratch_buffer_2k_ptr + (3u * 480u),  //
-+        src_ptr_x3,                           //
-+        src_ptr_x3,                           //
-+        src_len3,                             //
-+        h1v2_bias,                            //
-+        first_column,                         //
-+        (total_src_len3 >= half_width_for_2to1));
-+
-+    (*conv4func)(dst, x, end, y, up0, up1, up2, up3);
-+    x = end;
-+  }
-+}
-+
-+static void  //
-+wuffs_private_impl__swizzle_ycck__general__triangle_filter(
-+    wuffs_base__pixel_buffer* dst,
-+    uint32_t x_min_incl,
-+    uint32_t x_max_excl,
-+    uint32_t y_min_incl,
-+    uint32_t y_max_excl,
-+    const uint8_t* src_ptr0,
-+    const uint8_t* src_ptr1,
-+    const uint8_t* src_ptr2,
-+    const uint8_t* src_ptr3,
-+    uint32_t stride0,
-+    uint32_t stride1,
-+    uint32_t stride2,
-+    uint32_t stride3,
-+    uint32_t inv_h0,
-+    uint32_t inv_h1,
-+    uint32_t inv_h2,
-+    uint32_t inv_h3,
-+    uint32_t inv_v0,
-+    uint32_t inv_v1,
-+    uint32_t inv_v2,
-+    uint32_t inv_v3,
-+    uint32_t half_width_for_2to1,
-+    uint32_t half_height_for_2to1,
-+    uint8_t* scratch_buffer_2k_ptr,
-+    wuffs_private_impl__swizzle_ycc__upsample_func (*upfuncs)[4][4],
-+    wuffs_private_impl__swizzle_ycc__convert_4_func conv4func) {
-+  if ((x_min_incl != 0) || (y_min_incl != 0)) {
-+    return;
-+  }
-+
-+  wuffs_private_impl__swizzle_ycc__upsample_func upfunc0 =
-+      (*upfuncs)[(inv_h0 - 1u) & 3u][(inv_v0 - 1u) & 3u];
-+  wuffs_private_impl__swizzle_ycc__upsample_func upfunc1 =
-+      (*upfuncs)[(inv_h1 - 1u) & 3u][(inv_v1 - 1u) & 3u];
-+  wuffs_private_impl__swizzle_ycc__upsample_func upfunc2 =
-+      (*upfuncs)[(inv_h2 - 1u) & 3u][(inv_v2 - 1u) & 3u];
-+  wuffs_private_impl__swizzle_ycc__upsample_func upfunc3 =
-+      (*upfuncs)[(inv_h3 - 1u) & 3u][(inv_v3 - 1u) & 3u];
-+
-+  // First row.
-+  uint32_t h1v2_bias = 1u;
-+  wuffs_private_impl__swizzle_ycck__general__triangle_filter_edge_row(
-+      dst, x_max_excl, 0u,                     //
-+      src_ptr0, src_ptr1, src_ptr2, src_ptr3,  //
-+      stride0, stride1, stride2, stride3,      //
-+      inv_h0, inv_h1, inv_h2, inv_h3,          //
-+      inv_v0, inv_v1, inv_v2, inv_v3,          //
-+      half_width_for_2to1,                     //
-+      h1v2_bias,                               //
-+      scratch_buffer_2k_ptr,                   //
-+      upfunc0, upfunc1, upfunc2, upfunc3, conv4func);
-+  h1v2_bias = 2u;
-+
-+  // Middle rows.
-+  bool last_row = y_max_excl == 2u * half_height_for_2to1;
-+  uint32_t middle_y_max_excl = last_row ? (y_max_excl - 1u) : y_max_excl;
-+  uint32_t y;
-+  for (y = 1u; y < middle_y_max_excl; y++) {
-+    const uint8_t* src0_major = src_ptr0 + ((y / inv_v0) * (size_t)stride0);
-+    const uint8_t* src0_minor =
-+        (inv_v0 != 2u)
-+            ? src0_major
-+            : ((y & 1u) ? (src0_major + stride0) : (src0_major - stride0));
-+    const uint8_t* src1_major = src_ptr1 + ((y / inv_v1) * (size_t)stride1);
-+    const uint8_t* src1_minor =
-+        (inv_v1 != 2u)
-+            ? src1_major
-+            : ((y & 1u) ? (src1_major + stride1) : (src1_major - stride1));
-+    const uint8_t* src2_major = src_ptr2 + ((y / inv_v2) * (size_t)stride2);
-+    const uint8_t* src2_minor =
-+        (inv_v2 != 2u)
-+            ? src2_major
-+            : ((y & 1u) ? (src2_major + stride2) : (src2_major - stride2));
-+    const uint8_t* src3_major = src_ptr3 + ((y / inv_v3) * (size_t)stride3);
-+    const uint8_t* src3_minor =
-+        (inv_v3 != 2u)
-+            ? src3_major
-+            : ((y & 1u) ? (src3_major + stride3) : (src3_major - stride3));
-+    uint32_t total_src_len0 = 0u;
-+    uint32_t total_src_len1 = 0u;
-+    uint32_t total_src_len2 = 0u;
-+    uint32_t total_src_len3 = 0u;
-+
-+    uint32_t x = 0u;
-+    while (x < x_max_excl) {
-+      bool first_column = x == 0u;
-+      uint32_t end = x + 480u;
-+      if (end > x_max_excl) {
-+        end = x_max_excl;
-       }
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
--        uint32_t t_4;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--          t_4 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--          iop_a_src += 2;
--        } else {
--          self->private_data.s_do_decode_image_config[0].scratch = 0;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--            uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
--            *scratch <<= 8;
--            *scratch >>= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
--            if (num_bits_4 == 8) {
--              t_4 = ((uint32_t)(*scratch));
--              break;
--            }
--            num_bits_4 += 8u;
--            *scratch |= ((uint64_t)(num_bits_4)) << 56;
--          }
--        }
--        self->private_impl.f_height = t_4;
-+
-+      uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0;
-+      uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1;
-+      uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2;
-+      uint32_t src_len3 = ((end - x) + inv_h3 - 1u) / inv_h3;
-+      total_src_len0 += src_len0;
-+      total_src_len1 += src_len1;
-+      total_src_len2 += src_len2;
-+      total_src_len3 += src_len3;
-+
-+      const uint8_t* up0 = (*upfunc0)(          //
-+          scratch_buffer_2k_ptr + (0u * 480u),  //
-+          src0_major + (x / inv_h0),            //
-+          src0_minor + (x / inv_h0),            //
-+          src_len0,                             //
-+          h1v2_bias,                            //
-+          first_column,                         //
-+          (total_src_len0 >= half_width_for_2to1));
-+
-+      const uint8_t* up1 = (*upfunc1)(          //
-+          scratch_buffer_2k_ptr + (1u * 480u),  //
-+          src1_major + (x / inv_h1),            //
-+          src1_minor + (x / inv_h1),            //
-+          src_len1,                             //
-+          h1v2_bias,                            //
-+          first_column,                         //
-+          (total_src_len1 >= half_width_for_2to1));
-+
-+      const uint8_t* up2 = (*upfunc2)(          //
-+          scratch_buffer_2k_ptr + (2u * 480u),  //
-+          src2_major + (x / inv_h2),            //
-+          src2_minor + (x / inv_h2),            //
-+          src_len2,                             //
-+          h1v2_bias,                            //
-+          first_column,                         //
-+          (total_src_len2 >= half_width_for_2to1));
-+
-+      const uint8_t* up3 = (*upfunc3)(          //
-+          scratch_buffer_2k_ptr + (3u * 480u),  //
-+          src3_major + (x / inv_h3),            //
-+          src3_minor + (x / inv_h3),            //
-+          src_len3,                             //
-+          h1v2_bias,                            //
-+          first_column,                         //
-+          (total_src_len3 >= half_width_for_2to1));
-+
-+      (*conv4func)(dst, x, end, y, up0, up1, up2, up3);
-+      x = end;
-+    }
-+
-+    h1v2_bias ^= 3u;
-+  }
-+
-+  // Last row.
-+  if (middle_y_max_excl != y_max_excl) {
-+    wuffs_private_impl__swizzle_ycck__general__triangle_filter_edge_row(
-+        dst, x_max_excl, middle_y_max_excl,      //
-+        src_ptr0, src_ptr1, src_ptr2, src_ptr3,  //
-+        stride0, stride1, stride2, stride3,      //
-+        inv_h0, inv_h1, inv_h2, inv_h3,          //
-+        inv_v0, inv_v1, inv_v2, inv_v3,          //
-+        half_width_for_2to1,                     //
-+        h1v2_bias,                               //
-+        scratch_buffer_2k_ptr,                   //
-+        upfunc0, upfunc1, upfunc2, upfunc3, conv4func);
-+  }
-+}
-+
-+static void  //
-+wuffs_private_impl__swizzle_ycc__general__triangle_filter_edge_row(
-+    wuffs_base__pixel_buffer* dst,
-+    uint32_t width,
-+    uint32_t y,
-+    const uint8_t* src_ptr0,
-+    const uint8_t* src_ptr1,
-+    const uint8_t* src_ptr2,
-+    uint32_t stride0,
-+    uint32_t stride1,
-+    uint32_t stride2,
-+    uint32_t inv_h0,
-+    uint32_t inv_h1,
-+    uint32_t inv_h2,
-+    uint32_t inv_v0,
-+    uint32_t inv_v1,
-+    uint32_t inv_v2,
-+    uint32_t half_width_for_2to1,
-+    uint32_t h1v2_bias,
-+    uint8_t* scratch_buffer_2k_ptr,
-+    wuffs_private_impl__swizzle_ycc__upsample_func upfunc0,
-+    wuffs_private_impl__swizzle_ycc__upsample_func upfunc1,
-+    wuffs_private_impl__swizzle_ycc__upsample_func upfunc2,
-+    wuffs_private_impl__swizzle_ycc__convert_3_func conv3func) {
-+  const uint8_t* src0 = src_ptr0 + ((y / inv_v0) * (size_t)stride0);
-+  const uint8_t* src1 = src_ptr1 + ((y / inv_v1) * (size_t)stride1);
-+  const uint8_t* src2 = src_ptr2 + ((y / inv_v2) * (size_t)stride2);
-+  uint32_t total_src_len0 = 0u;
-+  uint32_t total_src_len1 = 0u;
-+  uint32_t total_src_len2 = 0u;
-+
-+  uint32_t x = 0u;
-+  while (x < width) {
-+    bool first_column = x == 0u;
-+    uint32_t end = x + 672u;
-+    if (end > width) {
-+      end = width;
-+    }
-+
-+    uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0;
-+    uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1;
-+    uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2;
-+    total_src_len0 += src_len0;
-+    total_src_len1 += src_len1;
-+    total_src_len2 += src_len2;
-+
-+    const uint8_t* src_ptr_x0 = src0 + (x / inv_h0);
-+    const uint8_t* up0 = (*upfunc0)(          //
-+        scratch_buffer_2k_ptr + (0u * 672u),  //
-+        src_ptr_x0,                           //
-+        src_ptr_x0,                           //
-+        src_len0,                             //
-+        h1v2_bias,                            //
-+        first_column,                         //
-+        (total_src_len0 >= half_width_for_2to1));
-+
-+    const uint8_t* src_ptr_x1 = src1 + (x / inv_h1);
-+    const uint8_t* up1 = (*upfunc1)(          //
-+        scratch_buffer_2k_ptr + (1u * 672u),  //
-+        src_ptr_x1,                           //
-+        src_ptr_x1,                           //
-+        src_len1,                             //
-+        h1v2_bias,                            //
-+        first_column,                         //
-+        (total_src_len1 >= half_width_for_2to1));
-+
-+    const uint8_t* src_ptr_x2 = src2 + (x / inv_h2);
-+    const uint8_t* up2 = (*upfunc2)(          //
-+        scratch_buffer_2k_ptr + (2u * 672u),  //
-+        src_ptr_x2,                           //
-+        src_ptr_x2,                           //
-+        src_len2,                             //
-+        h1v2_bias,                            //
-+        first_column,                         //
-+        (total_src_len2 >= half_width_for_2to1));
-+
-+    (*conv3func)(dst, x, end, y, up0, up1, up2);
-+    x = end;
-+  }
-+}
-+
-+static void  //
-+wuffs_private_impl__swizzle_ycc__general__triangle_filter(
-+    wuffs_base__pixel_buffer* dst,
-+    uint32_t x_min_incl,
-+    uint32_t x_max_excl,
-+    uint32_t y_min_incl,
-+    uint32_t y_max_excl,
-+    const uint8_t* src_ptr0,
-+    const uint8_t* src_ptr1,
-+    const uint8_t* src_ptr2,
-+    uint32_t stride0,
-+    uint32_t stride1,
-+    uint32_t stride2,
-+    uint32_t inv_h0,
-+    uint32_t inv_h1,
-+    uint32_t inv_h2,
-+    uint32_t inv_v0,
-+    uint32_t inv_v1,
-+    uint32_t inv_v2,
-+    uint32_t half_width_for_2to1,
-+    uint32_t half_height_for_2to1,
-+    uint8_t* scratch_buffer_2k_ptr,
-+    wuffs_private_impl__swizzle_ycc__upsample_func (*upfuncs)[4][4],
-+    wuffs_private_impl__swizzle_ycc__convert_3_func conv3func) {
-+  if ((x_min_incl != 0) || (y_min_incl != 0)) {
-+    return;
-+  }
-+
-+  wuffs_private_impl__swizzle_ycc__upsample_func upfunc0 =
-+      (*upfuncs)[(inv_h0 - 1u) & 3u][(inv_v0 - 1u) & 3u];
-+  wuffs_private_impl__swizzle_ycc__upsample_func upfunc1 =
-+      (*upfuncs)[(inv_h1 - 1u) & 3u][(inv_v1 - 1u) & 3u];
-+  wuffs_private_impl__swizzle_ycc__upsample_func upfunc2 =
-+      (*upfuncs)[(inv_h2 - 1u) & 3u][(inv_v2 - 1u) & 3u];
-+
-+  // First row.
-+  uint32_t h1v2_bias = 1u;
-+  wuffs_private_impl__swizzle_ycc__general__triangle_filter_edge_row(
-+      dst, x_max_excl, 0u,           //
-+      src_ptr0, src_ptr1, src_ptr2,  //
-+      stride0, stride1, stride2,     //
-+      inv_h0, inv_h1, inv_h2,        //
-+      inv_v0, inv_v1, inv_v2,        //
-+      half_width_for_2to1,           //
-+      h1v2_bias,                     //
-+      scratch_buffer_2k_ptr,         //
-+      upfunc0, upfunc1, upfunc2, conv3func);
-+  h1v2_bias = 2u;
-+
-+  // Middle rows.
-+  bool last_row = y_max_excl == 2u * half_height_for_2to1;
-+  uint32_t middle_y_max_excl = last_row ? (y_max_excl - 1u) : y_max_excl;
-+  uint32_t y;
-+  for (y = 1u; y < middle_y_max_excl; y++) {
-+    const uint8_t* src0_major = src_ptr0 + ((y / inv_v0) * (size_t)stride0);
-+    const uint8_t* src0_minor =
-+        (inv_v0 != 2u)
-+            ? src0_major
-+            : ((y & 1u) ? (src0_major + stride0) : (src0_major - stride0));
-+    const uint8_t* src1_major = src_ptr1 + ((y / inv_v1) * (size_t)stride1);
-+    const uint8_t* src1_minor =
-+        (inv_v1 != 2u)
-+            ? src1_major
-+            : ((y & 1u) ? (src1_major + stride1) : (src1_major - stride1));
-+    const uint8_t* src2_major = src_ptr2 + ((y / inv_v2) * (size_t)stride2);
-+    const uint8_t* src2_minor =
-+        (inv_v2 != 2u)
-+            ? src2_major
-+            : ((y & 1u) ? (src2_major + stride2) : (src2_major - stride2));
-+    uint32_t total_src_len0 = 0u;
-+    uint32_t total_src_len1 = 0u;
-+    uint32_t total_src_len2 = 0u;
-+
-+    uint32_t x = 0u;
-+    while (x < x_max_excl) {
-+      bool first_column = x == 0u;
-+      uint32_t end = x + 672u;
-+      if (end > x_max_excl) {
-+        end = x_max_excl;
-       }
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
--        uint32_t t_5;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--          t_5 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--          iop_a_src += 2;
--        } else {
--          self->private_data.s_do_decode_image_config[0].scratch = 0;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--            uint32_t num_bits_5 = ((uint32_t)(*scratch >> 56));
--            *scratch <<= 8;
--            *scratch >>= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_5;
--            if (num_bits_5 == 8) {
--              t_5 = ((uint32_t)(*scratch));
--              break;
--            }
--            num_bits_5 += 8u;
--            *scratch |= ((uint64_t)(num_bits_5)) << 56;
--          }
--        }
--        v_planes = t_5;
-+
-+      uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0;
-+      uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1;
-+      uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2;
-+      total_src_len0 += src_len0;
-+      total_src_len1 += src_len1;
-+      total_src_len2 += src_len2;
-+
-+      const uint8_t* up0 = (*upfunc0)(          //
-+          scratch_buffer_2k_ptr + (0u * 672u),  //
-+          src0_major + (x / inv_h0),            //
-+          src0_minor + (x / inv_h0),            //
-+          src_len0,                             //
-+          h1v2_bias,                            //
-+          first_column,                         //
-+          (total_src_len0 >= half_width_for_2to1));
-+
-+      const uint8_t* up1 = (*upfunc1)(          //
-+          scratch_buffer_2k_ptr + (1u * 672u),  //
-+          src1_major + (x / inv_h1),            //
-+          src1_minor + (x / inv_h1),            //
-+          src_len1,                             //
-+          h1v2_bias,                            //
-+          first_column,                         //
-+          (total_src_len1 >= half_width_for_2to1));
-+
-+      const uint8_t* up2 = (*upfunc2)(          //
-+          scratch_buffer_2k_ptr + (2u * 672u),  //
-+          src2_major + (x / inv_h2),            //
-+          src2_minor + (x / inv_h2),            //
-+          src_len2,                             //
-+          h1v2_bias,                            //
-+          first_column,                         //
-+          (total_src_len2 >= half_width_for_2to1));
-+
-+      (*conv3func)(dst, x, end, y, up0, up1, up2);
-+      x = end;
-+    }
-+
-+    h1v2_bias ^= 3u;
-+  }
-+
-+  // Last row.
-+  if (middle_y_max_excl != y_max_excl) {
-+    wuffs_private_impl__swizzle_ycc__general__triangle_filter_edge_row(
-+        dst, x_max_excl, middle_y_max_excl,  //
-+        src_ptr0, src_ptr1, src_ptr2,        //
-+        stride0, stride1, stride2,           //
-+        inv_h0, inv_h1, inv_h2,              //
-+        inv_v0, inv_v1, inv_v2,              //
-+        half_width_for_2to1,                 //
-+        h1v2_bias,                           //
-+        scratch_buffer_2k_ptr,               //
-+        upfunc0, upfunc1, upfunc2, conv3func);
-+  }
-+}
-+
-+static void  //
-+wuffs_private_impl__swizzle_ycc__general__box_filter(
-+    wuffs_base__pixel_buffer* dst,
-+    uint32_t x_min_incl,
-+    uint32_t x_max_excl,
-+    uint32_t y_min_incl,
-+    uint32_t y_max_excl,
-+    const uint8_t* src_ptr0,
-+    const uint8_t* src_ptr1,
-+    const uint8_t* src_ptr2,
-+    uint32_t stride0,
-+    uint32_t stride1,
-+    uint32_t stride2,
-+    uint32_t inv_h0,
-+    uint32_t inv_h1,
-+    uint32_t inv_h2,
-+    uint32_t inv_v0,
-+    uint32_t inv_v1,
-+    uint32_t inv_v2,
-+    uint32_t half_width_for_2to1,
-+    uint32_t half_height_for_2to1,
-+    uint8_t* scratch_buffer_2k_ptr,
-+    wuffs_private_impl__swizzle_ycc__upsample_func (*upfuncs)[4][4],
-+    wuffs_private_impl__swizzle_ycc__convert_3_func conv3func) {
-+  wuffs_private_impl__swizzle_ycc__upsample_func upfunc0 =
-+      (*upfuncs)[(inv_h0 - 1u) & 3u][(inv_v0 - 1u) & 3u];
-+  wuffs_private_impl__swizzle_ycc__upsample_func upfunc1 =
-+      (*upfuncs)[(inv_h1 - 1u) & 3u][(inv_v1 - 1u) & 3u];
-+  wuffs_private_impl__swizzle_ycc__upsample_func upfunc2 =
-+      (*upfuncs)[(inv_h2 - 1u) & 3u][(inv_v2 - 1u) & 3u];
-+
-+  uint32_t y;
-+  for (y = y_min_incl; y < y_max_excl; y++) {
-+    const uint8_t* src0_major =
-+        src_ptr0 + (((y - y_min_incl) / inv_v0) * (size_t)stride0);
-+    const uint8_t* src1_major =
-+        src_ptr1 + (((y - y_min_incl) / inv_v1) * (size_t)stride1);
-+    const uint8_t* src2_major =
-+        src_ptr2 + (((y - y_min_incl) / inv_v2) * (size_t)stride2);
-+
-+    uint32_t x = x_min_incl;
-+    while (x < x_max_excl) {
-+      uint32_t end = x + 672u;
-+      if (end > x_max_excl) {
-+        end = x_max_excl;
-       }
--      if (v_planes != 1u) {
--        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
--        goto exit;
-+
-+      uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0;
-+      uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1;
-+      uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2;
-+
-+      const uint8_t* up0 = (*upfunc0)(               //
-+          scratch_buffer_2k_ptr + (0u * 672u),       //
-+          src0_major + ((x - x_min_incl) / inv_h0),  //
-+          src0_major + ((x - x_min_incl) / inv_h0),  //
-+          src_len0,                                  //
-+          0u, false, false);
-+
-+      const uint8_t* up1 = (*upfunc1)(               //
-+          scratch_buffer_2k_ptr + (1u * 672u),       //
-+          src1_major + ((x - x_min_incl) / inv_h1),  //
-+          src1_major + ((x - x_min_incl) / inv_h1),  //
-+          src_len1,                                  //
-+          0u, false, false);
-+
-+      const uint8_t* up2 = (*upfunc2)(               //
-+          scratch_buffer_2k_ptr + (2u * 672u),       //
-+          src2_major + ((x - x_min_incl) / inv_h2),  //
-+          src2_major + ((x - x_min_incl) / inv_h2),  //
-+          src_len2,                                  //
-+          0u, false, false);
-+
-+      (*conv3func)(dst, x, end, y, up0, up1, up2);
-+      x = end;
-+    }
-+  }
-+}
-+
-+static void  //
-+wuffs_private_impl__swizzle_ycck__general__box_filter(
-+    wuffs_base__pixel_buffer* dst,
-+    uint32_t x_min_incl,
-+    uint32_t x_max_excl,
-+    uint32_t y_min_incl,
-+    uint32_t y_max_excl,
-+    const uint8_t* src_ptr0,
-+    const uint8_t* src_ptr1,
-+    const uint8_t* src_ptr2,
-+    const uint8_t* src_ptr3,
-+    uint32_t stride0,
-+    uint32_t stride1,
-+    uint32_t stride2,
-+    uint32_t stride3,
-+    uint32_t inv_h0,
-+    uint32_t inv_h1,
-+    uint32_t inv_h2,
-+    uint32_t inv_h3,
-+    uint32_t inv_v0,
-+    uint32_t inv_v1,
-+    uint32_t inv_v2,
-+    uint32_t inv_v3,
-+    uint32_t half_width_for_2to1,
-+    uint32_t half_height_for_2to1,
-+    uint8_t* scratch_buffer_2k_ptr,
-+    wuffs_private_impl__swizzle_ycc__upsample_func (*upfuncs)[4][4],
-+    wuffs_private_impl__swizzle_ycc__convert_4_func conv4func) {
-+  wuffs_private_impl__swizzle_ycc__upsample_func upfunc0 =
-+      (*upfuncs)[(inv_h0 - 1u) & 3u][(inv_v0 - 1u) & 3u];
-+  wuffs_private_impl__swizzle_ycc__upsample_func upfunc1 =
-+      (*upfuncs)[(inv_h1 - 1u) & 3u][(inv_v1 - 1u) & 3u];
-+  wuffs_private_impl__swizzle_ycc__upsample_func upfunc2 =
-+      (*upfuncs)[(inv_h2 - 1u) & 3u][(inv_v2 - 1u) & 3u];
-+  wuffs_private_impl__swizzle_ycc__upsample_func upfunc3 =
-+      (*upfuncs)[(inv_h3 - 1u) & 3u][(inv_v3 - 1u) & 3u];
-+
-+  uint32_t y;
-+  for (y = y_min_incl; y < y_max_excl; y++) {
-+    const uint8_t* src0_major =
-+        src_ptr0 + (((y - y_min_incl) / inv_v0) * (size_t)stride0);
-+    const uint8_t* src1_major =
-+        src_ptr1 + (((y - y_min_incl) / inv_v1) * (size_t)stride1);
-+    const uint8_t* src2_major =
-+        src_ptr2 + (((y - y_min_incl) / inv_v2) * (size_t)stride2);
-+    const uint8_t* src3_major =
-+        src_ptr3 + (((y - y_min_incl) / inv_v3) * (size_t)stride3);
-+
-+    uint32_t x = x_min_incl;
-+    while (x < x_max_excl) {
-+      uint32_t end = x + 480u;
-+      if (end > x_max_excl) {
-+        end = x_max_excl;
-       }
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
--        uint32_t t_6;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--          t_6 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--          iop_a_src += 2;
--        } else {
--          self->private_data.s_do_decode_image_config[0].scratch = 0;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--            uint32_t num_bits_6 = ((uint32_t)(*scratch >> 56));
--            *scratch <<= 8;
--            *scratch >>= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_6;
--            if (num_bits_6 == 8) {
--              t_6 = ((uint32_t)(*scratch));
--              break;
--            }
--            num_bits_6 += 8u;
--            *scratch |= ((uint64_t)(num_bits_6)) << 56;
--          }
--        }
--        self->private_impl.f_bits_per_pixel = t_6;
--      }
--    } else if (self->private_impl.f_bitmap_info_len == 16u) {
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
--        uint32_t t_7;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--          t_7 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--          iop_a_src += 4;
--        } else {
--          self->private_data.s_do_decode_image_config[0].scratch = 0;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(17);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--            uint32_t num_bits_7 = ((uint32_t)(*scratch >> 56));
--            *scratch <<= 8;
--            *scratch >>= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_7;
--            if (num_bits_7 == 24) {
--              t_7 = ((uint32_t)(*scratch));
--              break;
--            }
--            num_bits_7 += 8u;
--            *scratch |= ((uint64_t)(num_bits_7)) << 56;
--          }
--        }
--        v_width = t_7;
--      }
--      if (v_width > 2147483647u) {
--        status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
--        goto exit;
--      } else if (v_width > 16777215u) {
--        status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
--        goto exit;
--      }
--      self->private_impl.f_width = v_width;
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(18);
--        uint32_t t_8;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--          t_8 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--          iop_a_src += 4;
--        } else {
--          self->private_data.s_do_decode_image_config[0].scratch = 0;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(19);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--            uint32_t num_bits_8 = ((uint32_t)(*scratch >> 56));
--            *scratch <<= 8;
--            *scratch >>= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_8;
--            if (num_bits_8 == 24) {
--              t_8 = ((uint32_t)(*scratch));
--              break;
--            }
--            num_bits_8 += 8u;
--            *scratch |= ((uint64_t)(num_bits_8)) << 56;
--          }
--        }
--        v_height = t_8;
--      }
--      if (v_height > 2147483647u) {
--        status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
--        goto exit;
--      } else if (v_height > 16777215u) {
--        status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
--        goto exit;
--      }
--      self->private_impl.f_height = v_height;
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(20);
--        uint32_t t_9;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--          t_9 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--          iop_a_src += 2;
--        } else {
--          self->private_data.s_do_decode_image_config[0].scratch = 0;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(21);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--            uint32_t num_bits_9 = ((uint32_t)(*scratch >> 56));
--            *scratch <<= 8;
--            *scratch >>= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_9;
--            if (num_bits_9 == 8) {
--              t_9 = ((uint32_t)(*scratch));
--              break;
--            }
--            num_bits_9 += 8u;
--            *scratch |= ((uint64_t)(num_bits_9)) << 56;
--          }
--        }
--        v_planes = t_9;
--      }
--      if (v_planes != 1u) {
--        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
--        goto exit;
--      }
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22);
--        uint32_t t_10;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--          t_10 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--          iop_a_src += 2;
--        } else {
--          self->private_data.s_do_decode_image_config[0].scratch = 0;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(23);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--            uint32_t num_bits_10 = ((uint32_t)(*scratch >> 56));
--            *scratch <<= 8;
--            *scratch >>= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_10;
--            if (num_bits_10 == 8) {
--              t_10 = ((uint32_t)(*scratch));
--              break;
--            }
--            num_bits_10 += 8u;
--            *scratch |= ((uint64_t)(num_bits_10)) << 56;
--          }
--        }
--        self->private_impl.f_bits_per_pixel = t_10;
--      }
--    } else {
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(24);
--        uint32_t t_11;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--          t_11 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--          iop_a_src += 4;
--        } else {
--          self->private_data.s_do_decode_image_config[0].scratch = 0;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(25);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--            uint32_t num_bits_11 = ((uint32_t)(*scratch >> 56));
--            *scratch <<= 8;
--            *scratch >>= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_11;
--            if (num_bits_11 == 24) {
--              t_11 = ((uint32_t)(*scratch));
--              break;
--            }
--            num_bits_11 += 8u;
--            *scratch |= ((uint64_t)(num_bits_11)) << 56;
--          }
--        }
--        v_width = t_11;
--      }
--      if (v_width > 2147483647u) {
--        status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
--        goto exit;
--      } else if (v_width > 16777215u) {
--        status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
--        goto exit;
--      }
--      self->private_impl.f_width = v_width;
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(26);
--        uint32_t t_12;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--          t_12 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--          iop_a_src += 4;
--        } else {
--          self->private_data.s_do_decode_image_config[0].scratch = 0;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(27);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--            uint32_t num_bits_12 = ((uint32_t)(*scratch >> 56));
--            *scratch <<= 8;
--            *scratch >>= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_12;
--            if (num_bits_12 == 24) {
--              t_12 = ((uint32_t)(*scratch));
--              break;
--            }
--            num_bits_12 += 8u;
--            *scratch |= ((uint64_t)(num_bits_12)) << 56;
--          }
--        }
--        v_height = t_12;
--      }
--      if (v_height == 2147483648u) {
--        status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
--        goto exit;
--      } else if (v_height > 2147483648u) {
--        v_height = ((uint32_t)(0u - v_height));
--        if (v_height > 16777215u) {
--          status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
--          goto exit;
--        }
--        self->private_impl.f_height = v_height;
--        self->private_impl.f_top_down = true;
--      } else if (v_height > 16777215u) {
--        status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
--        goto exit;
--      } else {
--        self->private_impl.f_height = v_height;
--      }
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(28);
--        uint32_t t_13;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--          t_13 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--          iop_a_src += 2;
--        } else {
--          self->private_data.s_do_decode_image_config[0].scratch = 0;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(29);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--            uint32_t num_bits_13 = ((uint32_t)(*scratch >> 56));
--            *scratch <<= 8;
--            *scratch >>= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_13;
--            if (num_bits_13 == 8) {
--              t_13 = ((uint32_t)(*scratch));
--              break;
--            }
--            num_bits_13 += 8u;
--            *scratch |= ((uint64_t)(num_bits_13)) << 56;
--          }
-+
-+      uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0;
-+      uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1;
-+      uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2;
-+      uint32_t src_len3 = ((end - x) + inv_h3 - 1u) / inv_h3;
-+
-+      const uint8_t* up0 = (*upfunc0)(               //
-+          scratch_buffer_2k_ptr + (0u * 480u),       //
-+          src0_major + ((x - x_min_incl) / inv_h0),  //
-+          src0_major + ((x - x_min_incl) / inv_h0),  //
-+          src_len0,                                  //
-+          0u, false, false);
-+
-+      const uint8_t* up1 = (*upfunc1)(               //
-+          scratch_buffer_2k_ptr + (1u * 480u),       //
-+          src1_major + ((x - x_min_incl) / inv_h1),  //
-+          src1_major + ((x - x_min_incl) / inv_h1),  //
-+          src_len1,                                  //
-+          0u, false, false);
-+
-+      const uint8_t* up2 = (*upfunc2)(               //
-+          scratch_buffer_2k_ptr + (2u * 480u),       //
-+          src2_major + ((x - x_min_incl) / inv_h2),  //
-+          src2_major + ((x - x_min_incl) / inv_h2),  //
-+          src_len2,                                  //
-+          0u, false, false);
-+
-+      const uint8_t* up3 = (*upfunc3)(               //
-+          scratch_buffer_2k_ptr + (3u * 480u),       //
-+          src3_major + ((x - x_min_incl) / inv_h3),  //
-+          src3_major + ((x - x_min_incl) / inv_h3),  //
-+          src_len3,                                  //
-+          0u, false, false);
-+
-+      (*conv4func)(dst, x, end, y, up0, up1, up2, up3);
-+      x = end;
-+    }
-+  }
-+}
-+
-+// --------
-+
-+// wuffs_private_impl__swizzle_flattened_length is like
-+// wuffs_base__table__flattened_length but returns uint64_t (not size_t) and
-+// also accounts for subsampling.
-+static uint64_t  //
-+wuffs_private_impl__swizzle_flattened_length(uint32_t width,
-+                                             uint32_t height,
-+                                             uint32_t stride,
-+                                             uint32_t inv_h,
-+                                             uint32_t inv_v) {
-+  uint64_t scaled_width = (((uint64_t)width) + (inv_h - 1u)) / inv_h;
-+  uint64_t scaled_height = (((uint64_t)height) + (inv_v - 1u)) / inv_v;
-+  if (scaled_height <= 0u) {
-+    return 0u;
-+  }
-+  return ((scaled_height - 1u) * stride) + scaled_width;
-+}
-+
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status  //
-+wuffs_base__pixel_swizzler__swizzle_ycck(
-+    const wuffs_base__pixel_swizzler* p,
-+    wuffs_base__pixel_buffer* dst,
-+    wuffs_base__slice_u8 dst_palette,
-+    uint32_t x_min_incl,
-+    uint32_t x_max_excl,
-+    uint32_t y_min_incl,
-+    uint32_t y_max_excl,
-+    wuffs_base__slice_u8 src0,
-+    wuffs_base__slice_u8 src1,
-+    wuffs_base__slice_u8 src2,
-+    wuffs_base__slice_u8 src3,
-+    uint32_t width0,
-+    uint32_t width1,
-+    uint32_t width2,
-+    uint32_t width3,
-+    uint32_t height0,
-+    uint32_t height1,
-+    uint32_t height2,
-+    uint32_t height3,
-+    uint32_t stride0,
-+    uint32_t stride1,
-+    uint32_t stride2,
-+    uint32_t stride3,
-+    uint8_t h0,
-+    uint8_t h1,
-+    uint8_t h2,
-+    uint8_t h3,
-+    uint8_t v0,
-+    uint8_t v1,
-+    uint8_t v2,
-+    uint8_t v3,
-+    bool is_rgb_or_cmyk,
-+    bool triangle_filter_for_2to1,
-+    wuffs_base__slice_u8 scratch_buffer_2k) {
-+  if (!p) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  } else if (!dst ||                             //
-+             (x_min_incl > x_max_excl) ||        //
-+             (x_max_excl > 0xFFFFu) ||           //
-+             (y_min_incl > y_max_excl) ||        //
-+             (y_max_excl > 0xFFFFu) ||           //
-+             (4u <= ((unsigned int)h0 - 1u)) ||  //
-+             (4u <= ((unsigned int)h1 - 1u)) ||  //
-+             (4u <= ((unsigned int)h2 - 1u)) ||  //
-+             (4u <= ((unsigned int)v0 - 1u)) ||  //
-+             (4u <= ((unsigned int)v1 - 1u)) ||  //
-+             (4u <= ((unsigned int)v2 - 1u)) ||  //
-+             (triangle_filter_for_2to1 && ((x_min_incl | y_min_incl) > 0u)) ||
-+             (scratch_buffer_2k.len < 2048u)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((h3 != 0u) || (v3 != 0u)) {
-+    if ((4u <= ((unsigned int)h3 - 1u)) ||  //
-+        (4u <= ((unsigned int)v3 - 1u))) {
-+      return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+    }
-+  }
-+
-+  uint32_t max_incl_h = wuffs_private_impl__u32__max_of_4(h0, h1, h2, h3);
-+  uint32_t max_incl_v = wuffs_private_impl__u32__max_of_4(v0, v1, v2, v3);
-+
-+  // Calculate the inverse h and v ratios.
-+  //
-+  // It also canonicalizes (h=2 and max_incl_h=4) as equivalent to (h=1 and
-+  // max_incl_h=2). In both cases, the inv_h value is 2.
-+  uint32_t inv_h0 = max_incl_h / h0;
-+  uint32_t inv_h1 = max_incl_h / h1;
-+  uint32_t inv_h2 = max_incl_h / h2;
-+  uint32_t inv_h3 = h3 ? (max_incl_h / h3) : 0u;
-+  uint32_t inv_v0 = max_incl_v / v0;
-+  uint32_t inv_v1 = max_incl_v / v1;
-+  uint32_t inv_v2 = max_incl_v / v2;
-+  uint32_t inv_v3 = v3 ? (max_incl_v / v3) : 0u;
-+
-+  if (x_min_incl != 0) {
-+    if ((x_min_incl % inv_h0) || (x_min_incl % inv_h1) ||
-+        (x_min_incl % inv_h2) || (inv_h3 && (x_min_incl % inv_h3))) {
-+      return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+    }
-+  }
-+  if (y_min_incl != 0) {
-+    if ((y_min_incl % inv_v0) || (y_min_incl % inv_v1) ||
-+        (y_min_incl % inv_v2) || (inv_v3 && (y_min_incl % inv_v3))) {
-+      return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+    }
-+  }
-+
-+  uint32_t half_width_for_2to1 = ((x_max_excl - x_min_incl) + 1u) / 2u;
-+  if (inv_h0 == 2) {
-+    half_width_for_2to1 = wuffs_base__u32__min(half_width_for_2to1, width0);
-+  }
-+  if (inv_h1 == 2) {
-+    half_width_for_2to1 = wuffs_base__u32__min(half_width_for_2to1, width1);
-+  }
-+  if (inv_h2 == 2) {
-+    half_width_for_2to1 = wuffs_base__u32__min(half_width_for_2to1, width2);
-+  }
-+  if (inv_h3 == 2) {
-+    half_width_for_2to1 = wuffs_base__u32__min(half_width_for_2to1, width3);
-+  }
-+
-+  uint32_t half_height_for_2to1 = ((y_max_excl - y_min_incl) + 1u) / 2u;
-+  if (inv_v0 == 2) {
-+    half_height_for_2to1 = wuffs_base__u32__min(half_height_for_2to1, height0);
-+  }
-+  if (inv_v1 == 2) {
-+    half_height_for_2to1 = wuffs_base__u32__min(half_height_for_2to1, height1);
-+  }
-+  if (inv_v2 == 2) {
-+    half_height_for_2to1 = wuffs_base__u32__min(half_height_for_2to1, height2);
-+  }
-+  if (inv_v3 == 2) {
-+    half_height_for_2to1 = wuffs_base__u32__min(half_height_for_2to1, height3);
-+  }
-+
-+  x_max_excl = wuffs_base__u32__min(                   //
-+      wuffs_base__pixel_config__width(&dst->pixcfg),   //
-+      x_min_incl + wuffs_private_impl__u32__min_of_5(  //
-+                       x_max_excl - x_min_incl,        //
-+                       width0 * inv_h0,                //
-+                       width1 * inv_h1,                //
-+                       width2 * inv_h2,                //
-+                       inv_h3 ? (width3 * inv_h3) : 0xFFFFFFFF));
-+  y_max_excl = wuffs_base__u32__min(                   //
-+      wuffs_base__pixel_config__height(&dst->pixcfg),  //
-+      y_min_incl + wuffs_private_impl__u32__min_of_5(  //
-+                       y_max_excl - y_min_incl,        //
-+                       height0 * inv_v0,               //
-+                       height1 * inv_v1,               //
-+                       height2 * inv_v2,               //
-+                       inv_v3 ? (height3 * inv_v3) : 0xFFFFFFFF));
-+
-+  if ((x_min_incl >= x_max_excl) || (y_min_incl >= y_max_excl)) {
-+    return wuffs_base__make_status(NULL);
-+  }
-+  uint32_t width = x_max_excl - x_min_incl;
-+  uint32_t height = y_max_excl - y_min_incl;
-+
-+  if (((h0 * inv_h0) != max_incl_h) ||  //
-+      ((h1 * inv_h1) != max_incl_h) ||  //
-+      ((h2 * inv_h2) != max_incl_h) ||  //
-+      ((v0 * inv_v0) != max_incl_v) ||  //
-+      ((v1 * inv_v1) != max_incl_v) ||  //
-+      ((v2 * inv_v2) != max_incl_v) ||  //
-+      (src0.len < wuffs_private_impl__swizzle_flattened_length(
-+                      width, height, stride0, inv_h0, inv_v0)) ||
-+      (src1.len < wuffs_private_impl__swizzle_flattened_length(
-+                      width, height, stride1, inv_h1, inv_v1)) ||
-+      (src2.len < wuffs_private_impl__swizzle_flattened_length(
-+                      width, height, stride2, inv_h2, inv_v2))) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((h3 != 0u) || (v3 != 0u)) {
-+    if (((h3 * inv_h3) != max_incl_h) ||  //
-+        ((v3 * inv_v3) != max_incl_v) ||  //
-+        (src3.len < wuffs_private_impl__swizzle_flattened_length(
-+                        width, height, stride3, inv_h3, inv_v3))) {
-+      return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+    }
-+  }
-+
-+  if (wuffs_base__pixel_format__is_planar(&dst->pixcfg.private_impl.pixfmt)) {
-+    // TODO: see wuffs_base__pixel_buffer__set_color_u32_at's TODO.
-+    return wuffs_base__make_status(
-+        wuffs_base__error__unsupported_pixel_swizzler_option);
-+  }
-+
-+  // ----
-+
-+#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ENABLE_ALLOWLIST)
-+  switch (dst->pixcfg.private_impl.pixfmt.repr) {
-+#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_BGR_565)
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
-+      break;
-+#endif
-+#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_BGR)
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR:
-+      break;
-+#endif
-+#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_BGRA_NONPREMUL)
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
-+      break;
-+#endif
-+#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_BGRA_NONPREMUL_4X16LE)
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
-+      break;
-+#endif
-+#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_BGRA_PREMUL)
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
-+      break;
-+#endif
-+#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_RGB)
-+    case WUFFS_BASE__PIXEL_FORMAT__RGB:
-+      break;
-+#endif
-+#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_RGBA_NONPREMUL)
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
-+      break;
-+#endif
-+#if defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ALLOW_RGBA_PREMUL)
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
-+      break;
-+#endif
-+    default:
-+      return wuffs_base__make_status(
-+          wuffs_base__error__disabled_by_wuffs_config_dst_pixel_format_enable_allowlist);
-+  }
-+#else   // defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ENABLE_ALLOWLIST)
-+  switch (dst->pixcfg.private_impl.pixfmt.repr) {
-+    case WUFFS_BASE__PIXEL_FORMAT__Y:
-+    case WUFFS_BASE__PIXEL_FORMAT__Y_16LE:
-+    case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
-+    case WUFFS_BASE__PIXEL_FORMAT__YA_NONPREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGR:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__BGRX:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGB:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
-+    case WUFFS_BASE__PIXEL_FORMAT__RGBX:
-+      break;
-+
-+    default:
-+      // TODO: see wuffs_base__pixel_buffer__set_color_u32_at's TODO.
-+      return wuffs_base__make_status(
-+          wuffs_base__error__unsupported_pixel_swizzler_option);
-+  }
-+#endif  // defined(WUFFS_CONFIG__DST_PIXEL_FORMAT__ENABLE_ALLOWLIST)
-+
-+  // ----
-+
-+  wuffs_private_impl__swizzle_ycc__convert_3_func conv3func = NULL;
-+
-+  if (is_rgb_or_cmyk) {
-+    conv3func = &wuffs_private_impl__swizzle_rgb__convert_3_general;
-+  } else {
-+    switch (dst->pixcfg.private_impl.pixfmt.repr) {
-+      case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
-+      case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
-+      case WUFFS_BASE__PIXEL_FORMAT__BGRX:
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
-+        if (wuffs_base__cpu_arch__have_x86_avx2()) {
-+          conv3func = &wuffs_private_impl__swizzle_ycc__convert_3_bgrx_x86_avx2;
-+          break;
-         }
--        v_planes = t_13;
--      }
--      if (v_planes != 1u) {
--        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
--        goto exit;
--      }
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(30);
--        uint32_t t_14;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--          t_14 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--          iop_a_src += 2;
--        } else {
--          self->private_data.s_do_decode_image_config[0].scratch = 0;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(31);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--            uint32_t num_bits_14 = ((uint32_t)(*scratch >> 56));
--            *scratch <<= 8;
--            *scratch >>= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_14;
--            if (num_bits_14 == 8) {
--              t_14 = ((uint32_t)(*scratch));
--              break;
--            }
--            num_bits_14 += 8u;
--            *scratch |= ((uint64_t)(num_bits_14)) << 56;
--          }
-+#endif
-+        conv3func = &wuffs_private_impl__swizzle_ycc__convert_3_bgrx;
-+        break;
-+      case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
-+      case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
-+      case WUFFS_BASE__PIXEL_FORMAT__RGBX:
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
-+        if (wuffs_base__cpu_arch__have_x86_avx2()) {
-+          conv3func = &wuffs_private_impl__swizzle_ycc__convert_3_rgbx_x86_avx2;
-+          break;
-         }
--        self->private_impl.f_bits_per_pixel = t_14;
--      }
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(32);
--        uint32_t t_15;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--          t_15 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--          iop_a_src += 4;
--        } else {
--          self->private_data.s_do_decode_image_config[0].scratch = 0;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(33);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--            uint32_t num_bits_15 = ((uint32_t)(*scratch >> 56));
--            *scratch <<= 8;
--            *scratch >>= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_15;
--            if (num_bits_15 == 24) {
--              t_15 = ((uint32_t)(*scratch));
--              break;
--            }
--            num_bits_15 += 8u;
--            *scratch |= ((uint64_t)(num_bits_15)) << 56;
--          }
--        }
--        self->private_impl.f_compression = t_15;
--      }
--      if (self->private_impl.f_bits_per_pixel == 0u) {
--        if (self->private_impl.f_compression == 4u) {
--          self->private_impl.f_io_redirect_fourcc = 1246774599u;
--          status = wuffs_base__make_status(wuffs_base__note__i_o_redirect);
--          goto ok;
--        } else if (self->private_impl.f_compression == 5u) {
--          self->private_impl.f_io_redirect_fourcc = 1347307296u;
--          status = wuffs_base__make_status(wuffs_base__note__i_o_redirect);
--          goto ok;
--        }
--        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
--        goto exit;
--      }
--      self->private_data.s_do_decode_image_config[0].scratch = 20u;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(34);
--      if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--        self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--        iop_a_src = io2_a_src;
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      iop_a_src += self->private_data.s_do_decode_image_config[0].scratch;
--      if (self->private_impl.f_bitmap_info_len == 40u) {
--        if (self->private_impl.f_bits_per_pixel >= 16u) {
--          if (self->private_impl.f_padding >= 16u) {
--            self->private_impl.f_bitmap_info_len = 56u;
--            self->private_impl.f_padding -= 16u;
--          } else if (self->private_impl.f_padding >= 12u) {
--            self->private_impl.f_bitmap_info_len = 52u;
--            self->private_impl.f_padding -= 12u;
--          }
--        }
--      } else if ((self->private_impl.f_bitmap_info_len != 52u) &&
--          (self->private_impl.f_bitmap_info_len != 56u) &&
--          (self->private_impl.f_bitmap_info_len != 64u) &&
--          (self->private_impl.f_bitmap_info_len != 108u) &&
--          (self->private_impl.f_bitmap_info_len != 124u)) {
--        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
--        goto exit;
--      }
--      if (self->private_impl.f_compression == 6u) {
--        self->private_impl.f_compression = 3u;
--      }
--      if (self->private_impl.f_compression == 3u) {
--        if (self->private_impl.f_bitmap_info_len >= 52u) {
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(35);
--            uint32_t t_16;
--            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--              t_16 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--              iop_a_src += 4;
--            } else {
--              self->private_data.s_do_decode_image_config[0].scratch = 0;
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(36);
--              while (true) {
--                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                  goto suspend;
--                }
--                uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--                uint32_t num_bits_16 = ((uint32_t)(*scratch >> 56));
--                *scratch <<= 8;
--                *scratch >>= 8;
--                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_16;
--                if (num_bits_16 == 24) {
--                  t_16 = ((uint32_t)(*scratch));
--                  break;
--                }
--                num_bits_16 += 8u;
--                *scratch |= ((uint64_t)(num_bits_16)) << 56;
--              }
--            }
--            self->private_impl.f_channel_masks[2u] = t_16;
--          }
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(37);
--            uint32_t t_17;
--            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--              t_17 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--              iop_a_src += 4;
--            } else {
--              self->private_data.s_do_decode_image_config[0].scratch = 0;
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(38);
--              while (true) {
--                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                  goto suspend;
--                }
--                uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--                uint32_t num_bits_17 = ((uint32_t)(*scratch >> 56));
--                *scratch <<= 8;
--                *scratch >>= 8;
--                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_17;
--                if (num_bits_17 == 24) {
--                  t_17 = ((uint32_t)(*scratch));
--                  break;
--                }
--                num_bits_17 += 8u;
--                *scratch |= ((uint64_t)(num_bits_17)) << 56;
--              }
--            }
--            self->private_impl.f_channel_masks[1u] = t_17;
--          }
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(39);
--            uint32_t t_18;
--            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--              t_18 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--              iop_a_src += 4;
--            } else {
--              self->private_data.s_do_decode_image_config[0].scratch = 0;
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(40);
--              while (true) {
--                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                  goto suspend;
--                }
--                uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--                uint32_t num_bits_18 = ((uint32_t)(*scratch >> 56));
--                *scratch <<= 8;
--                *scratch >>= 8;
--                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_18;
--                if (num_bits_18 == 24) {
--                  t_18 = ((uint32_t)(*scratch));
--                  break;
--                }
--                num_bits_18 += 8u;
--                *scratch |= ((uint64_t)(num_bits_18)) << 56;
--              }
--            }
--            self->private_impl.f_channel_masks[0u] = t_18;
--          }
--          if (self->private_impl.f_bitmap_info_len >= 56u) {
--            {
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(41);
--              uint32_t t_19;
--              if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--                t_19 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--                iop_a_src += 4;
--              } else {
--                self->private_data.s_do_decode_image_config[0].scratch = 0;
--                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(42);
--                while (true) {
--                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                    goto suspend;
--                  }
--                  uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--                  uint32_t num_bits_19 = ((uint32_t)(*scratch >> 56));
--                  *scratch <<= 8;
--                  *scratch >>= 8;
--                  *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_19;
--                  if (num_bits_19 == 24) {
--                    t_19 = ((uint32_t)(*scratch));
--                    break;
--                  }
--                  num_bits_19 += 8u;
--                  *scratch |= ((uint64_t)(num_bits_19)) << 56;
--                }
--              }
--              self->private_impl.f_channel_masks[3u] = t_19;
--            }
--            self->private_data.s_do_decode_image_config[0].scratch = ((uint32_t)(self->private_impl.f_bitmap_info_len - 56u));
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(43);
--            if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--              self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--              iop_a_src = io2_a_src;
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            iop_a_src += self->private_data.s_do_decode_image_config[0].scratch;
--          }
--          if ((self->private_impl.f_channel_masks[0u] == 255u) && (self->private_impl.f_channel_masks[1u] == 65280u) && (self->private_impl.f_channel_masks[2u] == 16711680u)) {
--            if (self->private_impl.f_bits_per_pixel == 24u) {
--              self->private_impl.f_compression = 0u;
--            } else if (self->private_impl.f_bits_per_pixel == 32u) {
--              if ((self->private_impl.f_channel_masks[3u] == 0u) || (self->private_impl.f_channel_masks[3u] == 4278190080u)) {
--                self->private_impl.f_compression = 0u;
--              }
--            }
--          }
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(44);
--          status = wuffs_bmp__decoder__process_masks(self);
--          if (status.repr) {
--            goto suspend;
--          }
--        }
--      } else if (self->private_impl.f_bitmap_info_len >= 40u) {
--        self->private_data.s_do_decode_image_config[0].scratch = (self->private_impl.f_bitmap_info_len - 40u);
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(45);
--        if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--          self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--          iop_a_src = io2_a_src;
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
--        }
--        iop_a_src += self->private_data.s_do_decode_image_config[0].scratch;
--      } else {
--        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
--        goto exit;
--      }
--    }
--    if (self->private_impl.f_compression != 3u) {
--      if (self->private_impl.f_bits_per_pixel < 16u) {
--        if (a_src) {
--          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--        }
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(46);
--        status = wuffs_bmp__decoder__read_palette(self, a_src);
--        if (a_src) {
--          iop_a_src = a_src->data.ptr + a_src->meta.ri;
--        }
--        if (status.repr) {
--          goto suspend;
--        }
--      }
--    }
--    if (self->private_impl.f_compression == 0u) {
--      if ((self->private_impl.f_bits_per_pixel == 1u) || (self->private_impl.f_bits_per_pixel == 2u) || (self->private_impl.f_bits_per_pixel == 4u)) {
--        self->private_impl.f_src_pixfmt = 2198077448u;
--        self->private_impl.f_compression = 256u;
--      } else if (self->private_impl.f_bits_per_pixel == 8u) {
--        self->private_impl.f_src_pixfmt = 2198077448u;
--      } else if (self->private_impl.f_bits_per_pixel == 16u) {
--        self->private_impl.f_compression = 3u;
--        self->private_impl.f_channel_masks[0u] = 31u;
--        self->private_impl.f_channel_masks[1u] = 992u;
--        self->private_impl.f_channel_masks[2u] = 31744u;
--        self->private_impl.f_channel_masks[3u] = 0u;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(47);
--        status = wuffs_bmp__decoder__process_masks(self);
--        if (status.repr) {
--          goto suspend;
--        }
--        self->private_impl.f_src_pixfmt = 2164308923u;
--      } else if (self->private_impl.f_bits_per_pixel == 24u) {
--        self->private_impl.f_src_pixfmt = 2147485832u;
--      } else if (self->private_impl.f_bits_per_pixel == 32u) {
--        if (self->private_impl.f_channel_masks[3u] == 0u) {
--          self->private_impl.f_src_pixfmt = 2415954056u;
--        } else {
--          self->private_impl.f_src_pixfmt = 2164295816u;
--        }
--      } else {
--        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
--        goto exit;
--      }
--    } else if (self->private_impl.f_compression == 1u) {
--      if (self->private_impl.f_bits_per_pixel == 8u) {
--        self->private_impl.f_src_pixfmt = 2198077448u;
--      } else {
--        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
--        goto exit;
--      }
--    } else if (self->private_impl.f_compression == 2u) {
--      if (self->private_impl.f_bits_per_pixel == 4u) {
--        self->private_impl.f_src_pixfmt = 2198077448u;
--      } else {
--        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
--        goto exit;
--      }
--    } else if (self->private_impl.f_compression == 3u) {
--      if ((self->private_impl.f_bits_per_pixel == 16u) || (self->private_impl.f_bits_per_pixel == 32u)) {
--        self->private_impl.f_src_pixfmt = 2164308923u;
--      } else {
--        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
--        goto exit;
--      }
--    } else {
--      status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
--      goto exit;
--    }
--    if (((self->private_impl.f_bitmap_info_len < 40u) || (self->private_impl.f_bitmap_info_len == 64u)) &&
--        (self->private_impl.f_bits_per_pixel != 1u) &&
--        (self->private_impl.f_bits_per_pixel != 4u) &&
--        (self->private_impl.f_bits_per_pixel != 8u) &&
--        (self->private_impl.f_bits_per_pixel != 24u)) {
--      status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
--      goto exit;
--    }
--    if (self->private_impl.f_bits_per_pixel == 1u) {
--      v_byte_width = ((self->private_impl.f_width >> 3u) + (((self->private_impl.f_width & 7u) + 7u) >> 3u));
--      self->private_impl.f_pad_per_row = ((4u - (v_byte_width & 3u)) & 3u);
--    } else if (self->private_impl.f_bits_per_pixel == 2u) {
--      v_byte_width = ((self->private_impl.f_width >> 2u) + (((self->private_impl.f_width & 3u) + 3u) >> 2u));
--      self->private_impl.f_pad_per_row = ((4u - (v_byte_width & 3u)) & 3u);
--    } else if (self->private_impl.f_bits_per_pixel == 4u) {
--      v_byte_width = ((self->private_impl.f_width >> 1u) + (self->private_impl.f_width & 1u));
--      self->private_impl.f_pad_per_row = ((4u - (v_byte_width & 3u)) & 3u);
--    } else if (self->private_impl.f_bits_per_pixel == 8u) {
--      self->private_impl.f_pad_per_row = ((4u - (self->private_impl.f_width & 3u)) & 3u);
--    } else if (self->private_impl.f_bits_per_pixel == 16u) {
--      self->private_impl.f_pad_per_row = ((self->private_impl.f_width & 1u) * 2u);
--    } else if (self->private_impl.f_bits_per_pixel == 24u) {
--      self->private_impl.f_pad_per_row = (self->private_impl.f_width & 3u);
--    } else if (self->private_impl.f_bits_per_pixel == 32u) {
--      self->private_impl.f_pad_per_row = 0u;
--    }
--    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
--    if (a_dst != NULL) {
--      v_dst_pixfmt = 2164295816u;
--      if ((self->private_impl.f_channel_num_bits[0u] > 8u) ||
--          (self->private_impl.f_channel_num_bits[1u] > 8u) ||
--          (self->private_impl.f_channel_num_bits[2u] > 8u) ||
--          (self->private_impl.f_channel_num_bits[3u] > 8u)) {
--        v_dst_pixfmt = 2164308923u;
--      }
--      wuffs_base__image_config__set(
--          a_dst,
--          v_dst_pixfmt,
--          0u,
--          self->private_impl.f_width,
--          self->private_impl.f_height,
--          self->private_impl.f_frame_config_io_position,
--          (self->private_impl.f_channel_masks[3u] == 0u));
-+#endif
-+        conv3func = &wuffs_private_impl__swizzle_ycc__convert_3_rgbx;
-+        break;
-+      default:
-+        conv3func = &wuffs_private_impl__swizzle_ycc__convert_3_general;
-+        break;
-     }
--    self->private_impl.f_call_sequence = 32u;
--
--    ok:
--    self->private_impl.p_do_decode_image_config[0] = 0;
--    goto exit;
-   }
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  void (*func3)(wuffs_base__pixel_buffer * dst,  //
-+                uint32_t x_min_incl,             //
-+                uint32_t x_max_excl,             //
-+                uint32_t y_min_incl,             //
-+                uint32_t y_max_excl,             //
-+                const uint8_t* src_ptr0,         //
-+                const uint8_t* src_ptr1,         //
-+                const uint8_t* src_ptr2,         //
-+                uint32_t stride0,                //
-+                uint32_t stride1,                //
-+                uint32_t stride2,                //
-+                uint32_t inv_h0,                 //
-+                uint32_t inv_h1,                 //
-+                uint32_t inv_h2,                 //
-+                uint32_t inv_v0,                 //
-+                uint32_t inv_v1,                 //
-+                uint32_t inv_v2,                 //
-+                uint32_t half_width_for_2to1,    //
-+                uint32_t half_height_for_2to1,   //
-+                uint8_t* scratch_buffer_2k_ptr,  //
-+                wuffs_private_impl__swizzle_ycc__upsample_func(*upfuncs)[4][4],
-+                wuffs_private_impl__swizzle_ycc__convert_3_func conv3func) =
-+      &wuffs_private_impl__swizzle_ycc__general__box_filter;
-+
-+  void (*func4)(wuffs_base__pixel_buffer * dst,  //
-+                uint32_t x_min_incl,             //
-+                uint32_t x_max_excl,             //
-+                uint32_t y_min_incl,             //
-+                uint32_t y_max_excl,             //
-+                const uint8_t* src_ptr0,         //
-+                const uint8_t* src_ptr1,         //
-+                const uint8_t* src_ptr2,         //
-+                const uint8_t* src_ptr3,         //
-+                uint32_t stride0,                //
-+                uint32_t stride1,                //
-+                uint32_t stride2,                //
-+                uint32_t stride3,                //
-+                uint32_t inv_h0,                 //
-+                uint32_t inv_h1,                 //
-+                uint32_t inv_h2,                 //
-+                uint32_t inv_h3,                 //
-+                uint32_t inv_v0,                 //
-+                uint32_t inv_v1,                 //
-+                uint32_t inv_v2,                 //
-+                uint32_t inv_v3,                 //
-+                uint32_t half_width_for_2to1,    //
-+                uint32_t half_height_for_2to1,   //
-+                uint8_t* scratch_buffer_2k_ptr,  //
-+                wuffs_private_impl__swizzle_ycc__upsample_func(*upfuncs)[4][4],
-+                wuffs_private_impl__swizzle_ycc__convert_4_func conv4func) =
-+      &wuffs_private_impl__swizzle_ycck__general__box_filter;
-+
-+  wuffs_private_impl__swizzle_ycc__upsample_func upfuncs[4][4];
-+  memcpy(&upfuncs, &wuffs_private_impl__swizzle_ycc__upsample_funcs,
-+         sizeof upfuncs);
- 
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  if (triangle_filter_for_2to1 &&
-+      (wuffs_private_impl__swizzle_has_triangle_upsampler(inv_h0, inv_v0) ||
-+       wuffs_private_impl__swizzle_has_triangle_upsampler(inv_h1, inv_v1) ||
-+       wuffs_private_impl__swizzle_has_triangle_upsampler(inv_h2, inv_v2) ||
-+       wuffs_private_impl__swizzle_has_triangle_upsampler(inv_h3, inv_v3))) {
-+    func3 = &wuffs_private_impl__swizzle_ycc__general__triangle_filter;
-+    func4 = &wuffs_private_impl__swizzle_ycck__general__triangle_filter;
-+
-+    upfuncs[0][1] = wuffs_private_impl__swizzle_ycc__upsample_inv_h1v2_triangle;
-+    upfuncs[1][0] = wuffs_private_impl__swizzle_ycc__upsample_inv_h2v1_triangle;
-+    upfuncs[1][1] = wuffs_private_impl__swizzle_ycc__upsample_inv_h2v2_triangle;
-+
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
-+#if defined(__GNUC__) && !defined(__clang__)
-+    // Don't use our AVX2 implementation for GCC (but do use it for clang). For
-+    // some unknown reason, GCC performs noticably better on the non-SIMD
-+    // version. Possibly because GCC's auto-vectorizer is smarter (just with
-+    // SSE2, not AVX2) than our hand-written code, but that's just a guess.
-+    //
-+    // See commits 51bc60ef9298cb2efc1b29a9681191f66d49820d and
-+    // cd769a0cdf1b5affee13f6089b995f3d39569cb4 for benchmark numbers.
-+    //
-+    // See also https://godbolt.org/z/MbhbPGEz4 for Debian Bullseye's clang 11
-+    // versus gcc 10, where only gcc auto-vectorizes, although later clang
-+    // versions will also auto-vectorize.
-+#else
-+    if (wuffs_base__cpu_arch__have_x86_avx2()) {
-+      upfuncs[1][1] =
-+          wuffs_private_impl__swizzle_ycc__upsample_inv_h2v2_triangle_x86_avx2;
-+    }
-+#endif
-+#endif
-   }
- 
--  return status;
--}
--
--// -------- func bmp.decoder.decode_frame_config
-+  if ((h3 != 0u) || (v3 != 0u)) {
-+    wuffs_private_impl__swizzle_ycc__convert_4_func conv4func =
-+        is_rgb_or_cmyk ? &wuffs_private_impl__swizzle_cmyk__convert_4_general
-+                       : &wuffs_private_impl__swizzle_ycck__convert_4_general;
-+    (*func4)(                                                 //
-+        dst, x_min_incl, x_max_excl, y_min_incl, y_max_excl,  //
-+        src0.ptr, src1.ptr, src2.ptr, src3.ptr,               //
-+        stride0, stride1, stride2, stride3,                   //
-+        inv_h0, inv_h1, inv_h2, inv_h3,                       //
-+        inv_v0, inv_v1, inv_v2, inv_v3,                       //
-+        half_width_for_2to1, half_height_for_2to1,            //
-+        scratch_buffer_2k.ptr, &upfuncs, conv4func);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_bmp__decoder__decode_frame_config(
--    wuffs_bmp__decoder* self,
--    wuffs_base__frame_config* a_dst,
--    wuffs_base__io_buffer* a_src) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--  if (!a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 2)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  } else {
-+    (*func3)(                                                 //
-+        dst, x_min_incl, x_max_excl, y_min_incl, y_max_excl,  //
-+        src0.ptr, src1.ptr, src2.ptr,                         //
-+        stride0, stride1, stride2,                            //
-+        inv_h0, inv_h1, inv_h2,                               //
-+        inv_v0, inv_v1, inv_v2,                               //
-+        half_width_for_2to1, half_height_for_2to1,            //
-+        scratch_buffer_2k.ptr, &upfuncs, conv3func);
-   }
--  self->private_impl.active_coroutine = 0;
--  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
--
--  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+  return wuffs_base__make_status(NULL);
-+}
- 
--    while (true) {
--      {
--        wuffs_base__status t_0 = wuffs_bmp__decoder__do_decode_frame_config(self, a_dst, a_src);
--        v_status = t_0;
--      }
--      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_bmp__error__truncated_input);
--        goto exit;
--      }
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
--    }
-+// --------
- 
--    ok:
--    self->private_impl.p_decode_frame_config[0] = 0;
--    goto exit;
-+// ‼ WUFFS MULTI-FILE SECTION +x86_avx2
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
-+WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
-+static void  //
-+wuffs_private_impl__swizzle_ycc__convert_3_bgrx_x86_avx2(
-+    wuffs_base__pixel_buffer* dst,
-+    uint32_t x,
-+    uint32_t x_end,
-+    uint32_t y,
-+    const uint8_t* up0,
-+    const uint8_t* up1,
-+    const uint8_t* up2) {
-+  if ((x + 32u) > x_end) {
-+    wuffs_private_impl__swizzle_ycc__convert_3_bgrx(  //
-+        dst, x, x_end, y, up0, up1, up2);
-+    return;
-   }
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
-+  size_t dst_stride = dst->private_impl.planes[0].stride;
-+  uint8_t* dst_iter = dst->private_impl.planes[0].ptr +
-+                      (dst_stride * ((size_t)y)) + (4u * ((size_t)x));
- 
--  goto exit;
--  exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--  }
--  return status;
--}
-+  // u0001 = u16x16 [0x0001 .. 0x0001]
-+  // u00FF = u16x16 [0x00FF .. 0x00FF]
-+  // uFF80 = u16x16 [0xFF80 .. 0xFF80]
-+  // uFFFF = u16x16 [0xFFFF .. 0xFFFF]
-+  const __m256i u0001 = _mm256_set1_epi16(+0x0001);
-+  const __m256i u00FF = _mm256_set1_epi16(+0x00FF);
-+  const __m256i uFF80 = _mm256_set1_epi16(-0x0080);
-+  const __m256i uFFFF = _mm256_set1_epi16(-0x0001);
- 
--// -------- func bmp.decoder.do_decode_frame_config
-+  // p8000_p0000 = u16x16 [0x8000 0x0000 .. 0x8000 0x0000]
-+  const __m256i p8000_p0000 = _mm256_set_epi16(  //
-+      +0x0000, -0x8000, +0x0000, -0x8000,        //
-+      +0x0000, -0x8000, +0x0000, -0x8000,        //
-+      +0x0000, -0x8000, +0x0000, -0x8000,        //
-+      +0x0000, -0x8000, +0x0000, -0x8000);
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bmp__decoder__do_decode_frame_config(
--    wuffs_bmp__decoder* self,
--    wuffs_base__frame_config* a_dst,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+  // Per wuffs_base__color_ycc__as__color_u32, the formulae:
-+  //
-+  //  R = Y                + 1.40200 * Cr
-+  //  G = Y - 0.34414 * Cb - 0.71414 * Cr
-+  //  B = Y + 1.77200 * Cb
-+  //
-+  // When scaled by 1<<16:
-+  //
-+  //  0.34414 becomes 0x0581A =  22554.
-+  //  0.71414 becomes 0x0B6D2 =  46802.
-+  //  1.40200 becomes 0x166E9 =  91881.
-+  //  1.77200 becomes 0x1C5A2 = 116130.
-+  //
-+  // Separate the integer and fractional parts, since we work with signed
-+  // 16-bit SIMD lanes. The fractional parts range from -0.5 .. +0.5 (as
-+  // floating-point) which is from -0x8000 .. +0x8000 (as fixed-point).
-+  //
-+  //  -0x3A5E = -0x20000 + 0x1C5A2     The B:Cb factor.
-+  //  +0x66E9 = -0x10000 + 0x166E9     The R:Cr factor.
-+  //  -0x581A = +0x00000 - 0x0581A     The G:Cb factor.
-+  //  +0x492E = +0x10000 - 0x0B6D2     The G:Cr factor.
-+  const __m256i m3A5E = _mm256_set1_epi16(-0x3A5E);
-+  const __m256i p66E9 = _mm256_set1_epi16(+0x66E9);
-+  const __m256i m581A_p492E = _mm256_set_epi16(  //
-+      +0x492E, -0x581A, +0x492E, -0x581A,        //
-+      +0x492E, -0x581A, +0x492E, -0x581A,        //
-+      +0x492E, -0x581A, +0x492E, -0x581A,        //
-+      +0x492E, -0x581A, +0x492E, -0x581A);
- 
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
-+  while (x < x_end) {
-+    // Load chroma values in even and odd columns (the high 8 bits of each
-+    // u16x16 element are zero) and then subtract 0x0080.
-+    //
-+    // cb_all = u8x32  [cb.00 cb.01 cb.02 cb.03 .. cb.1C cb.1D cb.1E cb.1F]
-+    // cb_eve = i16x16 [cb.00-0x80  cb.02-0x80  .. cb.1C-0x80  cb.1E-0x80 ]
-+    // cb_odd = i16x16 [cb.01-0x80  cb.03-0x80  .. cb.1D-0x80  cb.1F-0x80 ]
-+    //
-+    // Ditto for the cr_xxx Chroma-Red values.
-+    __m256i cb_all = _mm256_lddqu_si256((const __m256i*)(const void*)up1);
-+    __m256i cr_all = _mm256_lddqu_si256((const __m256i*)(const void*)up2);
-+    __m256i cb_eve = _mm256_add_epi16(uFF80, _mm256_and_si256(cb_all, u00FF));
-+    __m256i cr_eve = _mm256_add_epi16(uFF80, _mm256_and_si256(cr_all, u00FF));
-+    __m256i cb_odd = _mm256_add_epi16(uFF80, _mm256_srli_epi16(cb_all, 8));
-+    __m256i cr_odd = _mm256_add_epi16(uFF80, _mm256_srli_epi16(cr_all, 8));
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+    // ----
- 
--    if (self->private_impl.f_call_sequence == 32u) {
--    } else if (self->private_impl.f_call_sequence < 32u) {
--      if (a_src) {
--        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--      }
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      status = wuffs_bmp__decoder__do_decode_image_config(self, NULL, a_src);
--      if (a_src) {
--        iop_a_src = a_src->data.ptr + a_src->meta.ri;
--      }
--      if (status.repr) {
--        goto suspend;
--      }
--    } else if (self->private_impl.f_call_sequence == 40u) {
--      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
--        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
--        goto exit;
--      }
--    } else if (self->private_impl.f_call_sequence == 64u) {
--      self->private_impl.f_call_sequence = 96u;
--      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--      goto ok;
--    } else {
--      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--      goto ok;
--    }
--    if (a_dst != NULL) {
--      wuffs_base__frame_config__set(
--          a_dst,
--          wuffs_base__utility__make_rect_ie_u32(
--          0u,
--          0u,
--          self->private_impl.f_width,
--          self->private_impl.f_height),
--          ((wuffs_base__flicks)(0u)),
--          0u,
--          self->private_impl.f_frame_config_io_position,
--          0u,
--          true,
--          false,
--          4278190080u);
--    }
--    self->private_impl.f_call_sequence = 64u;
-+    // Calculate:
-+    //
-+    //  B-Y = (+1.77200 * Cb)                 as floating-point
-+    //  R-Y = (+1.40200 * Cr)                 as floating-point
-+    //
-+    //  B-Y = ((0x2_0000 - 0x3A5E) * Cb)      as fixed-point
-+    //  R-Y = ((0x1_0000 + 0x66E9) * Cr)      as fixed-point
-+    //
-+    //  B-Y = ((-0x3A5E * Cb) + ("2.0" * Cb))
-+    //  R-Y = ((+0x66E9 * Cr) + ("1.0" * Cr))
- 
--    ok:
--    self->private_impl.p_do_decode_frame_config[0] = 0;
--    goto exit;
--  }
-+    // Multiply by m3A5E or p66E9, taking the high 16 bits. There's also a
-+    // doubling (add x to itself), adding-of-1 and halving (shift right by 1).
-+    // That makes multiply-and-take-high round to nearest (instead of down).
-+    __m256i tmp_by_eve = _mm256_srai_epi16(
-+        _mm256_add_epi16(
-+            _mm256_mulhi_epi16(_mm256_add_epi16(cb_eve, cb_eve), m3A5E), u0001),
-+        1);
-+    __m256i tmp_by_odd = _mm256_srai_epi16(
-+        _mm256_add_epi16(
-+            _mm256_mulhi_epi16(_mm256_add_epi16(cb_odd, cb_odd), m3A5E), u0001),
-+        1);
-+    __m256i tmp_ry_eve = _mm256_srai_epi16(
-+        _mm256_add_epi16(
-+            _mm256_mulhi_epi16(_mm256_add_epi16(cr_eve, cr_eve), p66E9), u0001),
-+        1);
-+    __m256i tmp_ry_odd = _mm256_srai_epi16(
-+        _mm256_add_epi16(
-+            _mm256_mulhi_epi16(_mm256_add_epi16(cr_odd, cr_odd), p66E9), u0001),
-+        1);
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+    // Add (2 * Cb) and (1 * Cr).
-+    __m256i by_eve =
-+        _mm256_add_epi16(tmp_by_eve, _mm256_add_epi16(cb_eve, cb_eve));
-+    __m256i by_odd =
-+        _mm256_add_epi16(tmp_by_odd, _mm256_add_epi16(cb_odd, cb_odd));
-+    __m256i ry_eve = _mm256_add_epi16(tmp_ry_eve, cr_eve);
-+    __m256i ry_odd = _mm256_add_epi16(tmp_ry_odd, cr_odd);
- 
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
-+    // ----
- 
--  return status;
--}
-+    // Calculate:
-+    //
-+    //  G-Y = (-0.34414 * Cb) +
-+    //        (-0.71414 * Cr)                 as floating-point
-+    //
-+    //  G-Y = ((+0x0_0000 - 0x581A) * Cb) +
-+    //        ((-0x1_0000 + 0x492E) * Cr)     as fixed-point
-+    //
-+    //  G-Y =  (-0x581A * Cb) +
-+    //         (+0x492E * Cr) - ("1.0" * Cr)
- 
--// -------- func bmp.decoder.decode_frame
-+    // Multiply-add to get ((-0x581A * Cb) + (+0x492E * Cr)).
-+    __m256i tmp0_gy_eve_lo = _mm256_madd_epi16(  //
-+        _mm256_unpacklo_epi16(cb_eve, cr_eve), m581A_p492E);
-+    __m256i tmp0_gy_eve_hi = _mm256_madd_epi16(  //
-+        _mm256_unpackhi_epi16(cb_eve, cr_eve), m581A_p492E);
-+    __m256i tmp0_gy_odd_lo = _mm256_madd_epi16(  //
-+        _mm256_unpacklo_epi16(cb_odd, cr_odd), m581A_p492E);
-+    __m256i tmp0_gy_odd_hi = _mm256_madd_epi16(  //
-+        _mm256_unpackhi_epi16(cb_odd, cr_odd), m581A_p492E);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_bmp__decoder__decode_frame(
--    wuffs_bmp__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--  if (!a_dst || !a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 3)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
--  }
--  self->private_impl.active_coroutine = 0;
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+    // Divide the i32x8 vectors by (1 << 16), rounding to nearest.
-+    __m256i tmp1_gy_eve_lo =
-+        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_eve_lo, p8000_p0000), 16);
-+    __m256i tmp1_gy_eve_hi =
-+        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_eve_hi, p8000_p0000), 16);
-+    __m256i tmp1_gy_odd_lo =
-+        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_odd_lo, p8000_p0000), 16);
-+    __m256i tmp1_gy_odd_hi =
-+        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_odd_hi, p8000_p0000), 16);
- 
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+    // Pack the ((-0x581A * Cb) + (+0x492E * Cr)) as i16x16 and subtract Cr.
-+    __m256i gy_eve = _mm256_sub_epi16(
-+        _mm256_packs_epi32(tmp1_gy_eve_lo, tmp1_gy_eve_hi), cr_eve);
-+    __m256i gy_odd = _mm256_sub_epi16(
-+        _mm256_packs_epi32(tmp1_gy_odd_lo, tmp1_gy_odd_hi), cr_odd);
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_frame[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+    // ----
- 
--    while (true) {
--      {
--        wuffs_base__status t_0 = wuffs_bmp__decoder__do_decode_frame(self,
--            a_dst,
--            a_src,
--            a_blend,
--            a_workbuf,
--            a_opts);
--        v_status = t_0;
--      }
--      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_bmp__error__truncated_input);
--        goto exit;
--      }
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
--    }
-+    // Add Y to (B-Y), (G-Y) and (R-Y) to produce B, G and R.
-+    //
-+    // For the resultant packed_x_xxx vectors, only elements 0 ..= 7 and 16 ..=
-+    // 23 of the 32-element vectors matter (since we'll unpacklo but not
-+    // unpackhi them). Let … denote 8 ignored consecutive u8 values and let %
-+    // denote 0xFF. We'll end this section with:
-+    //
-+    // packed_b_eve = u8x32 [b00 b02 .. b0C b0E  …  b10 b12 .. b1C b1E  …]
-+    // packed_b_odd = u8x32 [b01 b03 .. b0D b0F  …  b11 b13 .. b1D b1F  …]
-+    // packed_g_eve = u8x32 [g00 g02 .. g0C g0E  …  g10 g12 .. g1C g1E  …]
-+    // packed_g_odd = u8x32 [g01 g03 .. g0D g0F  …  g11 g13 .. g1D g1F  …]
-+    // packed_r_eve = u8x32 [r00 r02 .. r0C r0E  …  r10 r12 .. r1C r1E  …]
-+    // packed_r_odd = u8x32 [r01 r03 .. r0D r0F  …  r11 r13 .. r1D r1F  …]
-+    // uFFFF        = u8x32 [  %   % ..   %   %  …    %   % ..   %   %  …]
- 
--    ok:
--    self->private_impl.p_decode_frame[0] = 0;
--    goto exit;
--  }
-+    __m256i yy_all = _mm256_lddqu_si256((const __m256i*)(const void*)up0);
-+    __m256i yy_eve = _mm256_and_si256(yy_all, u00FF);
-+    __m256i yy_odd = _mm256_srli_epi16(yy_all, 8);
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
-+    __m256i loose_b_eve = _mm256_add_epi16(by_eve, yy_eve);
-+    __m256i loose_b_odd = _mm256_add_epi16(by_odd, yy_odd);
-+    __m256i packed_b_eve = _mm256_packus_epi16(loose_b_eve, loose_b_eve);
-+    __m256i packed_b_odd = _mm256_packus_epi16(loose_b_odd, loose_b_odd);
- 
--  goto exit;
--  exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--  }
--  return status;
--}
-+    __m256i loose_g_eve = _mm256_add_epi16(gy_eve, yy_eve);
-+    __m256i loose_g_odd = _mm256_add_epi16(gy_odd, yy_odd);
-+    __m256i packed_g_eve = _mm256_packus_epi16(loose_g_eve, loose_g_eve);
-+    __m256i packed_g_odd = _mm256_packus_epi16(loose_g_odd, loose_g_odd);
- 
--// -------- func bmp.decoder.do_decode_frame
-+    __m256i loose_r_eve = _mm256_add_epi16(ry_eve, yy_eve);
-+    __m256i loose_r_odd = _mm256_add_epi16(ry_odd, yy_odd);
-+    __m256i packed_r_eve = _mm256_packus_epi16(loose_r_eve, loose_r_eve);
-+    __m256i packed_r_odd = _mm256_packus_epi16(loose_r_odd, loose_r_odd);
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bmp__decoder__do_decode_frame(
--    wuffs_bmp__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+    // ----
- 
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+    // Mix those values (unpacking in 8, 16 and then 32 bit units) to get the
-+    // desired BGRX/RGBX order.
-+    //
-+    // From here onwards, all of our __m256i registers are u8x32.
- 
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
-+    // mix00 = [b00 g00 b02 g02 .. b0E g0E b10 g10 .. b1C g1C b1E g1E]
-+    // mix01 = [b01 g01 b03 g03 .. b0F g0F b11 g11 .. b1D g1D b1F g1F]
-+    // mix02 = [r00   % r02   % .. r0E   % r10   % .. r1C   % r1E   %]
-+    // mix03 = [r01   % r03   % .. r0F   % r11   % .. r1D   % r1F   %]
-+    //
-+    // See also § below.
-+    __m256i mix00 = _mm256_unpacklo_epi8(packed_b_eve, packed_g_eve);
-+    __m256i mix01 = _mm256_unpacklo_epi8(packed_b_odd, packed_g_odd);
-+    __m256i mix02 = _mm256_unpacklo_epi8(packed_r_eve, uFFFF);
-+    __m256i mix03 = _mm256_unpacklo_epi8(packed_r_odd, uFFFF);
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+    // mix10 = [b00 g00 r00 %  b02 g02 r02 %  b04 g04 r04 %  b06 g06 r06 %
-+    //          b10 g10 r10 %  b12 g12 r12 %  b14 g14 r14 %  b16 g16 r16 %]
-+    // mix11 = [b01 g01 r01 %  b03 g03 r03 %  b05 g05 r05 %  b07 g07 r07 %
-+    //          b11 g11 r11 %  b13 g13 r13 %  b15 g15 r15 %  b17 g17 r17 %]
-+    // mix12 = [b08 g08 r08 %  b0A g0A r0A %  b0C g0C r0C %  b0E g0E r0E %
-+    //          b18 g18 r18 %  b1A g1A r1A %  b1C g1C r1C %  b1E g1E r1E %]
-+    // mix13 = [b09 g09 r09 %  b0B g0B r0B %  b0D g0D r0D %  b0F g0F r0F %
-+    //          b19 g19 r19 %  b1B g1B r1B %  b1D g1D r1D %  b1F g1F r1F %]
-+    __m256i mix10 = _mm256_unpacklo_epi16(mix00, mix02);
-+    __m256i mix11 = _mm256_unpacklo_epi16(mix01, mix03);
-+    __m256i mix12 = _mm256_unpackhi_epi16(mix00, mix02);
-+    __m256i mix13 = _mm256_unpackhi_epi16(mix01, mix03);
- 
--    if (self->private_impl.f_call_sequence == 64u) {
--    } else if (self->private_impl.f_call_sequence < 64u) {
--      if (a_src) {
--        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--      }
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      status = wuffs_bmp__decoder__do_decode_frame_config(self, NULL, a_src);
--      if (a_src) {
--        iop_a_src = a_src->data.ptr + a_src->meta.ri;
--      }
--      if (status.repr) {
--        goto suspend;
--      }
--    } else {
--      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--      goto ok;
--    }
--    self->private_data.s_do_decode_frame[0].scratch = self->private_impl.f_padding;
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--    if (self->private_data.s_do_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--      self->private_data.s_do_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--      iop_a_src = io2_a_src;
--      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--      goto suspend;
--    }
--    iop_a_src += self->private_data.s_do_decode_frame[0].scratch;
--    if ((self->private_impl.f_width > 0u) && (self->private_impl.f_height > 0u)) {
--      self->private_impl.f_dst_x = 0u;
--      if (self->private_impl.f_top_down) {
--        self->private_impl.f_dst_y = 0u;
--        self->private_impl.f_dst_y_inc = 1u;
--      } else {
--        self->private_impl.f_dst_y = ((uint32_t)(self->private_impl.f_height - 1u));
--        self->private_impl.f_dst_y_inc = 4294967295u;
--      }
--      v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
--          wuffs_base__pixel_buffer__pixel_format(a_dst),
--          wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048)),
--          wuffs_base__utility__make_pixel_format(self->private_impl.f_src_pixfmt),
--          wuffs_base__make_slice_u8(self->private_data.f_src_palette, 1024),
--          a_blend);
--      if ( ! wuffs_base__status__is_ok(&v_status)) {
--        status = v_status;
--        if (wuffs_base__status__is_error(&status)) {
--          goto exit;
--        } else if (wuffs_base__status__is_suspension(&status)) {
--          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
--          goto exit;
--        }
--        goto ok;
--      }
--      while (true) {
--        if (self->private_impl.f_compression == 0u) {
--          if (a_src) {
--            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--          }
--          v_status = wuffs_bmp__decoder__swizzle_none(self, a_dst, a_src);
--          if (a_src) {
--            iop_a_src = a_src->data.ptr + a_src->meta.ri;
--          }
--        } else if (self->private_impl.f_compression < 3u) {
--          if (a_src) {
--            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--          }
--          v_status = wuffs_bmp__decoder__swizzle_rle(self, a_dst, a_src);
--          if (a_src) {
--            iop_a_src = a_src->data.ptr + a_src->meta.ri;
--          }
--        } else if (self->private_impl.f_compression == 3u) {
--          if (a_src) {
--            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--          }
--          v_status = wuffs_bmp__decoder__swizzle_bitfields(self, a_dst, a_src);
--          if (a_src) {
--            iop_a_src = a_src->data.ptr + a_src->meta.ri;
--          }
--        } else {
--          if (a_src) {
--            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--          }
--          v_status = wuffs_bmp__decoder__swizzle_low_bit_depth(self, a_dst, a_src);
--          if (a_src) {
--            iop_a_src = a_src->data.ptr + a_src->meta.ri;
--          }
--        }
--        if (wuffs_base__status__is_ok(&v_status)) {
--          break;
--        } else if (v_status.repr != wuffs_bmp__note__internal_note_short_read) {
--          status = v_status;
--          if (wuffs_base__status__is_error(&status)) {
--            goto exit;
--          } else if (wuffs_base__status__is_suspension(&status)) {
--            status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
--            goto exit;
--          }
--          goto ok;
--        }
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
--      }
--      self->private_data.s_do_decode_frame[0].scratch = self->private_impl.f_pending_pad;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--      if (self->private_data.s_do_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--        self->private_data.s_do_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--        iop_a_src = io2_a_src;
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      iop_a_src += self->private_data.s_do_decode_frame[0].scratch;
--      self->private_impl.f_pending_pad = 0u;
--    }
--    self->private_impl.f_call_sequence = 96u;
-+    // mix20 = [b00 g00 r00 %  b01 g01 r01 %  b02 g02 r02 %  b03 g03 r03 %
-+    //          b10 g10 r10 %  b11 g11 r11 %  b12 g12 r12 %  b13 g13 r13 %]
-+    // mix21 = [b04 g04 r04 %  b05 g05 r05 %  b06 g06 r06 %  b07 g07 r07 %
-+    //          b14 g14 r14 %  b15 g15 r15 %  b16 g16 r16 %  b17 g17 r17 %]
-+    // mix22 = [b08 g08 r08 %  b09 g09 r09 %  b0A g0A r0A %  b0B g0B r0B %
-+    //          b18 g18 r18 %  b19 g19 r19 %  b1A g1A r1A %  b1B g1B r1B %]
-+    // mix23 = [b0C g0C r0C %  b0D g0D r0D %  b0E g0E r0E %  b0F g0F r0F %
-+    //          b1C g1C r1C %  b1D g1D r1D %  b1E g1E r1E %  b1F g1F r1F %]
-+    __m256i mix20 = _mm256_unpacklo_epi32(mix10, mix11);
-+    __m256i mix21 = _mm256_unpackhi_epi32(mix10, mix11);
-+    __m256i mix22 = _mm256_unpacklo_epi32(mix12, mix13);
-+    __m256i mix23 = _mm256_unpackhi_epi32(mix12, mix13);
- 
--    ok:
--    self->private_impl.p_do_decode_frame[0] = 0;
--    goto exit;
--  }
-+    // mix30 = [b00 g00 r00 %  b01 g01 r01 %  b02 g02 r02 %  b03 g03 r03 %
-+    //          b04 g04 r04 %  b05 g05 r05 %  b06 g06 r06 %  b07 g07 r07 %]
-+    // mix31 = [b08 g08 r08 %  b09 g09 r09 %  b0A g0A r0A %  b0B g0B r0B %
-+    //          b0C g0C r0C %  b0D g0D r0D %  b0E g0E r0E %  b0F g0F r0F %]
-+    // mix32 = [b10 g10 r10 %  b11 g11 r11 %  b12 g12 r12 %  b13 g13 r13 %
-+    //          b14 g14 r14 %  b15 g15 r15 %  b16 g16 r16 %  b17 g17 r17 %]
-+    // mix33 = [b18 g18 r18 %  b19 g19 r19 %  b1A g1A r1A %  b1B g1B r1B %
-+    //          b1C g1C r1C %  b1D g1D r1D %  b1E g1E r1E %  b1F g1F r1F %]
-+    __m256i mix30 = _mm256_permute2x128_si256(mix20, mix21, 0x20);
-+    __m256i mix31 = _mm256_permute2x128_si256(mix22, mix23, 0x20);
-+    __m256i mix32 = _mm256_permute2x128_si256(mix20, mix21, 0x31);
-+    __m256i mix33 = _mm256_permute2x128_si256(mix22, mix23, 0x31);
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+    // Write out four u8x32 SIMD registers (128 bytes, 32 BGRX/RGBX pixels).
-+    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x00), mix30);
-+    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x20), mix31);
-+    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x40), mix32);
-+    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x60), mix33);
- 
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+    // Advance by up to 32 pixels. The first iteration might be smaller than 32
-+    // so that all of the remaining steps are exactly 32.
-+    uint32_t n = 32u - (31u & (x - x_end));
-+    dst_iter += 4u * n;
-+    up0 += n;
-+    up1 += n;
-+    up2 += n;
-+    x += n;
-   }
--
--  return status;
- }
- 
--// -------- func bmp.decoder.swizzle_none
-+// The rgbx flavor (below) is exactly the same as the bgrx flavor (above)
-+// except for the lines marked with a § and that comments were stripped.
-+WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
-+static void  //
-+wuffs_private_impl__swizzle_ycc__convert_3_rgbx_x86_avx2(
-+    wuffs_base__pixel_buffer* dst,
-+    uint32_t x,
-+    uint32_t x_end,
-+    uint32_t y,
-+    const uint8_t* up0,
-+    const uint8_t* up1,
-+    const uint8_t* up2) {
-+  if ((x + 32u) > x_end) {
-+    wuffs_private_impl__swizzle_ycc__convert_3_bgrx(  //
-+        dst, x, x_end, y, up0, up1, up2);
-+    return;
-+  }
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bmp__decoder__swizzle_none(
--    wuffs_bmp__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+  size_t dst_stride = dst->private_impl.planes[0].stride;
-+  uint8_t* dst_iter = dst->private_impl.planes[0].ptr +
-+                      (dst_stride * ((size_t)y)) + (4u * ((size_t)x));
- 
--  wuffs_base__pixel_format v_dst_pixfmt = {0};
--  uint32_t v_dst_bits_per_pixel = 0;
--  uint32_t v_dst_bytes_per_pixel = 0;
--  uint64_t v_dst_bytes_per_row = 0;
--  uint32_t v_src_bytes_per_pixel = 0;
--  wuffs_base__slice_u8 v_dst_palette = {0};
--  wuffs_base__table_u8 v_tab = {0};
--  wuffs_base__slice_u8 v_dst = {0};
--  uint64_t v_i = 0;
--  uint64_t v_j = 0;
--  uint64_t v_n = 0;
-+  const __m256i u0001 = _mm256_set1_epi16(+0x0001);
-+  const __m256i u00FF = _mm256_set1_epi16(+0x00FF);
-+  const __m256i uFF80 = _mm256_set1_epi16(-0x0080);
-+  const __m256i uFFFF = _mm256_set1_epi16(-0x0001);
- 
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
-+  const __m256i p8000_p0000 = _mm256_set_epi16(  //
-+      +0x0000, -0x8000, +0x0000, -0x8000,        //
-+      +0x0000, -0x8000, +0x0000, -0x8000,        //
-+      +0x0000, -0x8000, +0x0000, -0x8000,        //
-+      +0x0000, -0x8000, +0x0000, -0x8000);
- 
--  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
--  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
--  if ((v_dst_bits_per_pixel & 7u) != 0u) {
--    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
--    goto exit;
--  }
--  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
--  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
--  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048));
--  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
--  label__outer__continue:;
--  while (true) {
--    while (self->private_impl.f_pending_pad > 0u) {
--      if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--        status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
--        goto ok;
--      }
--      self->private_impl.f_pending_pad -= 1u;
--      iop_a_src += 1u;
--    }
--    while (true) {
--      if (self->private_impl.f_dst_x == self->private_impl.f_width) {
--        self->private_impl.f_dst_x = 0u;
--        self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
--        if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
--          if (self->private_impl.f_height > 0u) {
--            self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row;
--          }
--          goto label__outer__break;
--        } else if (self->private_impl.f_pad_per_row != 0u) {
--          self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row;
--          goto label__outer__continue;
--        }
--      }
--      v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
--      if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
--        v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
--      }
--      v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
--      if (v_i >= ((uint64_t)(v_dst.len))) {
--        if (self->private_impl.f_bits_per_pixel > 32u) {
--          status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
--          goto exit;
--        }
--        v_src_bytes_per_pixel = (self->private_impl.f_bits_per_pixel / 8u);
--        if (v_src_bytes_per_pixel == 0u) {
--          status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
--          goto exit;
--        }
--        v_n = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(v_src_bytes_per_pixel)));
--        v_n = wuffs_base__u64__min(v_n, ((uint64_t)(((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x)))));
--        v_j = v_n;
--        while (v_j >= 8u) {
--          if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 8u)))) {
--            iop_a_src += (v_src_bytes_per_pixel * 8u);
--          }
--          v_j -= 8u;
--        }
--        while (v_j > 0u) {
--          if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 1u)))) {
--            iop_a_src += (v_src_bytes_per_pixel * 1u);
--          }
--          v_j -= 1u;
--        }
--      } else {
--        v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
--            &self->private_impl.f_swizzler,
--            wuffs_base__slice_u8__subslice_i(v_dst, v_i),
--            v_dst_palette,
--            &iop_a_src,
--            io2_a_src);
--      }
--      if (v_n == 0u) {
--        status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
--        goto ok;
--      }
--      wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
--    }
--  }
--  label__outer__break:;
--  status = wuffs_base__make_status(NULL);
--  goto ok;
-+  const __m256i m3A5E = _mm256_set1_epi16(-0x3A5E);
-+  const __m256i p66E9 = _mm256_set1_epi16(+0x66E9);
-+  const __m256i m581A_p492E = _mm256_set_epi16(  //
-+      +0x492E, -0x581A, +0x492E, -0x581A,        //
-+      +0x492E, -0x581A, +0x492E, -0x581A,        //
-+      +0x492E, -0x581A, +0x492E, -0x581A,        //
-+      +0x492E, -0x581A, +0x492E, -0x581A);
- 
--  ok:
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
-+  while (x < x_end) {
-+    __m256i cb_all = _mm256_lddqu_si256((const __m256i*)(const void*)up1);
-+    __m256i cr_all = _mm256_lddqu_si256((const __m256i*)(const void*)up2);
-+    __m256i cb_eve = _mm256_add_epi16(uFF80, _mm256_and_si256(cb_all, u00FF));
-+    __m256i cr_eve = _mm256_add_epi16(uFF80, _mm256_and_si256(cr_all, u00FF));
-+    __m256i cb_odd = _mm256_add_epi16(uFF80, _mm256_srli_epi16(cb_all, 8));
-+    __m256i cr_odd = _mm256_add_epi16(uFF80, _mm256_srli_epi16(cr_all, 8));
- 
--  return status;
--}
-+    __m256i tmp_by_eve = _mm256_srai_epi16(
-+        _mm256_add_epi16(
-+            _mm256_mulhi_epi16(_mm256_add_epi16(cb_eve, cb_eve), m3A5E), u0001),
-+        1);
-+    __m256i tmp_by_odd = _mm256_srai_epi16(
-+        _mm256_add_epi16(
-+            _mm256_mulhi_epi16(_mm256_add_epi16(cb_odd, cb_odd), m3A5E), u0001),
-+        1);
-+    __m256i tmp_ry_eve = _mm256_srai_epi16(
-+        _mm256_add_epi16(
-+            _mm256_mulhi_epi16(_mm256_add_epi16(cr_eve, cr_eve), p66E9), u0001),
-+        1);
-+    __m256i tmp_ry_odd = _mm256_srai_epi16(
-+        _mm256_add_epi16(
-+            _mm256_mulhi_epi16(_mm256_add_epi16(cr_odd, cr_odd), p66E9), u0001),
-+        1);
- 
--// -------- func bmp.decoder.swizzle_rle
-+    __m256i by_eve =
-+        _mm256_add_epi16(tmp_by_eve, _mm256_add_epi16(cb_eve, cb_eve));
-+    __m256i by_odd =
-+        _mm256_add_epi16(tmp_by_odd, _mm256_add_epi16(cb_odd, cb_odd));
-+    __m256i ry_eve = _mm256_add_epi16(tmp_ry_eve, cr_eve);
-+    __m256i ry_odd = _mm256_add_epi16(tmp_ry_odd, cr_odd);
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bmp__decoder__swizzle_rle(
--    wuffs_bmp__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+    __m256i tmp0_gy_eve_lo = _mm256_madd_epi16(  //
-+        _mm256_unpacklo_epi16(cb_eve, cr_eve), m581A_p492E);
-+    __m256i tmp0_gy_eve_hi = _mm256_madd_epi16(  //
-+        _mm256_unpackhi_epi16(cb_eve, cr_eve), m581A_p492E);
-+    __m256i tmp0_gy_odd_lo = _mm256_madd_epi16(  //
-+        _mm256_unpacklo_epi16(cb_odd, cr_odd), m581A_p492E);
-+    __m256i tmp0_gy_odd_hi = _mm256_madd_epi16(  //
-+        _mm256_unpackhi_epi16(cb_odd, cr_odd), m581A_p492E);
- 
--  wuffs_base__pixel_format v_dst_pixfmt = {0};
--  uint32_t v_dst_bits_per_pixel = 0;
--  uint32_t v_dst_bytes_per_pixel = 0;
--  uint64_t v_dst_bytes_per_row = 0;
--  wuffs_base__slice_u8 v_dst_palette = {0};
--  wuffs_base__table_u8 v_tab = {0};
--  wuffs_base__slice_u8 v_row = {0};
--  wuffs_base__slice_u8 v_dst = {0};
--  uint64_t v_i = 0;
--  uint64_t v_n = 0;
--  uint32_t v_p0 = 0;
--  uint8_t v_code = 0;
--  uint8_t v_indexes[2] = {0};
--  uint32_t v_rle_state = 0;
--  uint32_t v_chunk_bits = 0;
--  uint32_t v_chunk_count = 0;
-+    __m256i tmp1_gy_eve_lo =
-+        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_eve_lo, p8000_p0000), 16);
-+    __m256i tmp1_gy_eve_hi =
-+        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_eve_hi, p8000_p0000), 16);
-+    __m256i tmp1_gy_odd_lo =
-+        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_odd_lo, p8000_p0000), 16);
-+    __m256i tmp1_gy_odd_hi =
-+        _mm256_srai_epi32(_mm256_add_epi32(tmp0_gy_odd_hi, p8000_p0000), 16);
- 
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
-+    __m256i gy_eve = _mm256_sub_epi16(
-+        _mm256_packs_epi32(tmp1_gy_eve_lo, tmp1_gy_eve_hi), cr_eve);
-+    __m256i gy_odd = _mm256_sub_epi16(
-+        _mm256_packs_epi32(tmp1_gy_odd_lo, tmp1_gy_odd_hi), cr_odd);
- 
--  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
--  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
--  if ((v_dst_bits_per_pixel & 7u) != 0u) {
--    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
--    goto exit;
--  }
--  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
--  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
--  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048));
--  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
--  v_rle_state = self->private_impl.f_rle_state;
--  label__outer__continue:;
--  while (true) {
--    v_row = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
--    if (v_dst_bytes_per_row < ((uint64_t)(v_row.len))) {
--      v_row = wuffs_base__slice_u8__subslice_j(v_row, v_dst_bytes_per_row);
--    }
--    label__middle__continue:;
--    while (true) {
--      v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
--      if (v_i <= ((uint64_t)(v_row.len))) {
--        v_dst = wuffs_base__slice_u8__subslice_i(v_row, v_i);
--      } else {
--        v_dst = wuffs_base__utility__empty_slice_u8();
--      }
--      while (true) {
--        while (true) {
--          if (v_rle_state == 0u) {
--            if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
--              goto label__goto_suspend__break;
--            }
--            v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--            iop_a_src += 1u;
--            if (v_code == 0u) {
--              v_rle_state = 2u;
--              continue;
--            }
--            self->private_impl.f_rle_length = ((uint32_t)(v_code));
--            v_rle_state = 1u;
--            continue;
--          } else if (v_rle_state == 1u) {
--            if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
--              goto label__goto_suspend__break;
--            }
--            v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--            iop_a_src += 1u;
--            if (self->private_impl.f_bits_per_pixel == 8u) {
--              v_p0 = 0u;
--              while (v_p0 < self->private_impl.f_rle_length) {
--                self->private_data.f_scratch[v_p0] = v_code;
--                v_p0 += 1u;
--              }
--            } else {
--              v_indexes[0u] = ((uint8_t)((v_code >> 4u)));
--              v_indexes[1u] = (v_code & 15u);
--              v_p0 = 0u;
--              while (v_p0 < self->private_impl.f_rle_length) {
--                self->private_data.f_scratch[(v_p0 + 0u)] = v_indexes[0u];
--                self->private_data.f_scratch[(v_p0 + 1u)] = v_indexes[1u];
--                v_p0 += 2u;
--              }
--            }
--            wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, self->private_impl.f_rle_length));
--            wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, self->private_impl.f_rle_length);
--            v_rle_state = 0u;
--            goto label__middle__continue;
--          } else if (v_rle_state == 2u) {
--            if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
--              goto label__goto_suspend__break;
--            }
--            v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--            iop_a_src += 1u;
--            if (v_code < 2u) {
--              if ((self->private_impl.f_dst_y >= self->private_impl.f_height) && (v_code == 0u)) {
--                status = wuffs_base__make_status(wuffs_bmp__error__bad_rle_compression);
--                goto exit;
--              }
--              wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_dst, v_dst_palette, 18446744073709551615u);
--              self->private_impl.f_dst_x = 0u;
--              self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
--              if (v_code > 0u) {
--                goto label__outer__break;
--              }
--              v_rle_state = 0u;
--              goto label__outer__continue;
--            } else if (v_code == 2u) {
--              v_rle_state = 4u;
--              continue;
--            }
--            self->private_impl.f_rle_length = ((uint32_t)(v_code));
--            self->private_impl.f_rle_padded = ((self->private_impl.f_bits_per_pixel == 8u) && ((v_code & 1u) != 0u));
--            v_rle_state = 3u;
--            continue;
--          } else if (v_rle_state == 3u) {
--            if (self->private_impl.f_bits_per_pixel == 8u) {
--              v_n = wuffs_base__pixel_swizzler__limited_swizzle_u32_interleaved_from_reader(
--                  &self->private_impl.f_swizzler,
--                  self->private_impl.f_rle_length,
--                  v_dst,
--                  v_dst_palette,
--                  &iop_a_src,
--                  io2_a_src);
--              wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
--              wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_rle_length, ((uint32_t)(v_n)));
--            } else {
--              v_chunk_count = ((self->private_impl.f_rle_length + 3u) / 4u);
--              v_p0 = 0u;
--              while ((v_chunk_count > 0u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 2u)) {
--                v_chunk_bits = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
--                iop_a_src += 2u;
--                self->private_data.f_scratch[(v_p0 + 0u)] = ((uint8_t)((15u & (v_chunk_bits >> 12u))));
--                self->private_data.f_scratch[(v_p0 + 1u)] = ((uint8_t)((15u & (v_chunk_bits >> 8u))));
--                self->private_data.f_scratch[(v_p0 + 2u)] = ((uint8_t)((15u & (v_chunk_bits >> 4u))));
--                self->private_data.f_scratch[(v_p0 + 3u)] = ((uint8_t)((15u & (v_chunk_bits >> 0u))));
--                v_p0 = ((v_p0 & 255u) + 4u);
--                v_chunk_count -= 1u;
--              }
--              v_p0 = wuffs_base__u32__min(v_p0, self->private_impl.f_rle_length);
--              wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, v_p0));
--              wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, v_p0);
--              wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_rle_length, v_p0);
--            }
--            if (self->private_impl.f_rle_length > 0u) {
--              goto label__goto_suspend__break;
--            }
--            if (self->private_impl.f_rle_padded) {
--              if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
--                goto label__goto_suspend__break;
--              }
--              iop_a_src += 1u;
--              self->private_impl.f_rle_padded = false;
--            }
--            v_rle_state = 0u;
--            goto label__middle__continue;
--          } else if (v_rle_state == 4u) {
--            if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
--              goto label__goto_suspend__break;
--            }
--            self->private_impl.f_rle_delta_x = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--            iop_a_src += 1u;
--            v_rle_state = 5u;
--            continue;
--          }
--          if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
--            goto label__goto_suspend__break;
--          }
--          v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--          iop_a_src += 1u;
--          if (self->private_impl.f_rle_delta_x > 0u) {
--            wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_dst, v_dst_palette, ((uint64_t)(self->private_impl.f_rle_delta_x)));
--            wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(self->private_impl.f_rle_delta_x)));
--            self->private_impl.f_rle_delta_x = 0u;
--            if (self->private_impl.f_dst_x > self->private_impl.f_width) {
--              status = wuffs_base__make_status(wuffs_bmp__error__bad_rle_compression);
--              goto exit;
--            }
--          }
--          if (v_code > 0u) {
--#if defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wconversion"
--#endif
--            v_code -= 1u;
--#if defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--            while (true) {
--              self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
--              if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
--                status = wuffs_base__make_status(wuffs_bmp__error__bad_rle_compression);
--                goto exit;
--              }
--              v_row = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
--              if (v_dst_bytes_per_row < ((uint64_t)(v_row.len))) {
--                v_row = wuffs_base__slice_u8__subslice_j(v_row, v_dst_bytes_per_row);
--              }
--              if (v_code <= 0u) {
--                wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_row, v_dst_palette, ((uint64_t)(self->private_impl.f_dst_x)));
--                break;
--              }
--              wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_row, v_dst_palette, 18446744073709551615u);
--#if defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wconversion"
--#endif
--              v_code -= 1u;
--#if defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--            }
--          }
--          v_rle_state = 0u;
--          goto label__middle__continue;
--        }
--      }
--      label__goto_suspend__break:;
--      self->private_impl.f_rle_state = v_rle_state;
--      status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
--      goto ok;
--    }
--  }
--  label__outer__break:;
--  while (self->private_impl.f_dst_y < self->private_impl.f_height) {
--    v_row = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
--    if (v_dst_bytes_per_row < ((uint64_t)(v_row.len))) {
--      v_row = wuffs_base__slice_u8__subslice_j(v_row, v_dst_bytes_per_row);
--    }
--    wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_row, v_dst_palette, 18446744073709551615u);
--    self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
--  }
--  status = wuffs_base__make_status(NULL);
--  goto ok;
-+    __m256i yy_all = _mm256_lddqu_si256((const __m256i*)(const void*)up0);
-+    __m256i yy_eve = _mm256_and_si256(yy_all, u00FF);
-+    __m256i yy_odd = _mm256_srli_epi16(yy_all, 8);
- 
--  ok:
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
-+    __m256i loose_b_eve = _mm256_add_epi16(by_eve, yy_eve);
-+    __m256i loose_b_odd = _mm256_add_epi16(by_odd, yy_odd);
-+    __m256i packed_b_eve = _mm256_packus_epi16(loose_b_eve, loose_b_eve);
-+    __m256i packed_b_odd = _mm256_packus_epi16(loose_b_odd, loose_b_odd);
- 
--  return status;
--}
-+    __m256i loose_g_eve = _mm256_add_epi16(gy_eve, yy_eve);
-+    __m256i loose_g_odd = _mm256_add_epi16(gy_odd, yy_odd);
-+    __m256i packed_g_eve = _mm256_packus_epi16(loose_g_eve, loose_g_eve);
-+    __m256i packed_g_odd = _mm256_packus_epi16(loose_g_odd, loose_g_odd);
- 
--// -------- func bmp.decoder.swizzle_bitfields
-+    __m256i loose_r_eve = _mm256_add_epi16(ry_eve, yy_eve);
-+    __m256i loose_r_odd = _mm256_add_epi16(ry_odd, yy_odd);
-+    __m256i packed_r_eve = _mm256_packus_epi16(loose_r_eve, loose_r_eve);
-+    __m256i packed_r_odd = _mm256_packus_epi16(loose_r_odd, loose_r_odd);
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bmp__decoder__swizzle_bitfields(
--    wuffs_bmp__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+    // § Note the swapped B and R channels.
-+    __m256i mix00 = _mm256_unpacklo_epi8(packed_r_eve, packed_g_eve);
-+    __m256i mix01 = _mm256_unpacklo_epi8(packed_r_odd, packed_g_odd);
-+    __m256i mix02 = _mm256_unpacklo_epi8(packed_b_eve, uFFFF);
-+    __m256i mix03 = _mm256_unpacklo_epi8(packed_b_odd, uFFFF);
- 
--  wuffs_base__pixel_format v_dst_pixfmt = {0};
--  uint32_t v_dst_bits_per_pixel = 0;
--  uint32_t v_dst_bytes_per_pixel = 0;
--  uint64_t v_dst_bytes_per_row = 0;
--  wuffs_base__slice_u8 v_dst_palette = {0};
--  wuffs_base__table_u8 v_tab = {0};
--  wuffs_base__slice_u8 v_dst = {0};
--  uint64_t v_i = 0;
--  uint64_t v_n = 0;
--  uint32_t v_p0 = 0;
--  uint32_t v_p1 = 0;
--  uint32_t v_p1_temp = 0;
--  uint32_t v_num_bits = 0;
--  uint32_t v_c = 0;
--  uint32_t v_c32 = 0;
--  uint32_t v_channel = 0;
-+    __m256i mix10 = _mm256_unpacklo_epi16(mix00, mix02);
-+    __m256i mix11 = _mm256_unpacklo_epi16(mix01, mix03);
-+    __m256i mix12 = _mm256_unpackhi_epi16(mix00, mix02);
-+    __m256i mix13 = _mm256_unpackhi_epi16(mix01, mix03);
- 
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
-+    __m256i mix20 = _mm256_unpacklo_epi32(mix10, mix11);
-+    __m256i mix21 = _mm256_unpackhi_epi32(mix10, mix11);
-+    __m256i mix22 = _mm256_unpacklo_epi32(mix12, mix13);
-+    __m256i mix23 = _mm256_unpackhi_epi32(mix12, mix13);
- 
--  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
--  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
--  if ((v_dst_bits_per_pixel & 7u) != 0u) {
--    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
--    goto exit;
--  }
--  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
--  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
--  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048));
--  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
--  label__outer__continue:;
--  while (true) {
--    while (self->private_impl.f_pending_pad > 0u) {
--      if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--        status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
--        goto ok;
--      }
--      self->private_impl.f_pending_pad -= 1u;
--      iop_a_src += 1u;
--    }
--    while (true) {
--      if (self->private_impl.f_dst_x == self->private_impl.f_width) {
--        self->private_impl.f_dst_x = 0u;
--        self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
--        if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
--          if (self->private_impl.f_height > 0u) {
--            self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row;
--          }
--          goto label__outer__break;
--        } else if (self->private_impl.f_pad_per_row != 0u) {
--          self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row;
--          goto label__outer__continue;
--        }
--      }
--      v_p1_temp = ((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x));
--      v_p1 = wuffs_base__u32__min(v_p1_temp, 256u);
--      v_p0 = 0u;
--      while (v_p0 < v_p1) {
--        if (self->private_impl.f_bits_per_pixel == 16u) {
--          if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
--            break;
--          }
--          v_c32 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--          iop_a_src += 2u;
--        } else {
--          if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
--            break;
--          }
--          v_c32 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--          iop_a_src += 4u;
--        }
--        v_channel = 0u;
--        while (v_channel < 4u) {
--          if (self->private_impl.f_channel_num_bits[v_channel] == 0u) {
--            self->private_data.f_scratch[((8u * v_p0) + (2u * v_channel) + 0u)] = 255u;
--            self->private_data.f_scratch[((8u * v_p0) + (2u * v_channel) + 1u)] = 255u;
--          } else {
--            v_c = ((v_c32 & self->private_impl.f_channel_masks[v_channel]) >> self->private_impl.f_channel_shifts[v_channel]);
--            v_num_bits = ((uint32_t)(self->private_impl.f_channel_num_bits[v_channel]));
--            while (v_num_bits < 16u) {
--              v_c |= ((uint32_t)(v_c << v_num_bits));
--              v_num_bits *= 2u;
--            }
--            v_c >>= (v_num_bits - 16u);
--            self->private_data.f_scratch[((8u * v_p0) + (2u * v_channel) + 0u)] = ((uint8_t)((v_c >> 0u)));
--            self->private_data.f_scratch[((8u * v_p0) + (2u * v_channel) + 1u)] = ((uint8_t)((v_c >> 8u)));
--          }
--          v_channel += 1u;
--        }
--        v_p0 += 1u;
--      }
--      v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
--      if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
--        v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
--      }
--      v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
--      if (v_i >= ((uint64_t)(v_dst.len))) {
--        v_n = ((uint64_t)(v_p0));
--      } else {
--        v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, (8u * v_p0)));
--      }
--      if (v_n == 0u) {
--        status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
--        goto ok;
--      }
--      wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
--    }
--  }
--  label__outer__break:;
--  status = wuffs_base__make_status(NULL);
--  goto ok;
-+    __m256i mix30 = _mm256_permute2x128_si256(mix20, mix21, 0x20);
-+    __m256i mix31 = _mm256_permute2x128_si256(mix22, mix23, 0x20);
-+    __m256i mix32 = _mm256_permute2x128_si256(mix20, mix21, 0x31);
-+    __m256i mix33 = _mm256_permute2x128_si256(mix22, mix23, 0x31);
- 
--  ok:
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
-+    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x00), mix30);
-+    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x20), mix31);
-+    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x40), mix32);
-+    _mm256_storeu_si256((__m256i*)(void*)(dst_iter + 0x60), mix33);
- 
--  return status;
-+    uint32_t n = 32u - (31u & (x - x_end));
-+    dst_iter += 4u * n;
-+    up0 += n;
-+    up1 += n;
-+    up2 += n;
-+    x += n;
-+  }
- }
- 
--// -------- func bmp.decoder.swizzle_low_bit_depth
-+#if defined(__GNUC__) && !defined(__clang__)
-+// No-op.
-+#else
-+WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
-+static const uint8_t*  //
-+wuffs_private_impl__swizzle_ycc__upsample_inv_h2v2_triangle_x86_avx2(
-+    uint8_t* dst_ptr,
-+    const uint8_t* src_ptr_major,
-+    const uint8_t* src_ptr_minor,
-+    size_t src_len,
-+    uint32_t h1v2_bias_ignored,
-+    bool first_column,
-+    bool last_column) {
-+  uint8_t* dp = dst_ptr;
-+  const uint8_t* sp_major = src_ptr_major;
-+  const uint8_t* sp_minor = src_ptr_minor;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bmp__decoder__swizzle_low_bit_depth(
--    wuffs_bmp__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+  if (first_column) {
-+    src_len--;
-+    if ((src_len <= 0u) && last_column) {
-+      uint32_t sv = (12u * ((uint32_t)(*sp_major++))) +  //
-+                    (4u * ((uint32_t)(*sp_minor++)));
-+      *dp++ = (uint8_t)((sv + 8u) >> 4u);
-+      *dp++ = (uint8_t)((sv + 7u) >> 4u);
-+      return dst_ptr;
-+    }
- 
--  wuffs_base__pixel_format v_dst_pixfmt = {0};
--  uint32_t v_dst_bits_per_pixel = 0;
--  uint32_t v_dst_bytes_per_pixel = 0;
--  uint64_t v_dst_bytes_per_row = 0;
--  wuffs_base__slice_u8 v_dst_palette = {0};
--  wuffs_base__table_u8 v_tab = {0};
--  wuffs_base__slice_u8 v_dst = {0};
--  uint64_t v_i = 0;
--  uint64_t v_n = 0;
--  uint32_t v_p0 = 0;
--  uint32_t v_chunk_bits = 0;
--  uint32_t v_chunk_count = 0;
--  uint32_t v_pixels_per_chunk = 0;
-+    uint32_t sv_major_m1 = sp_major[-0];  // Clamp offset to zero.
-+    uint32_t sv_minor_m1 = sp_minor[-0];  // Clamp offset to zero.
-+    uint32_t sv_major_p1 = sp_major[+1];
-+    uint32_t sv_minor_p1 = sp_minor[+1];
- 
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
-+    uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
-+                  (3u * ((uint32_t)(*sp_minor++)));
-+    *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
-+    *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
-+    if (src_len <= 0u) {
-+      return dst_ptr;
-+    }
-   }
- 
--  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
--  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
--  if ((v_dst_bits_per_pixel & 7u) != 0u) {
--    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
--    goto exit;
--  }
--  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
--  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
--  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048));
--  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
--  while (true) {
--    if (self->private_impl.f_dst_x == self->private_impl.f_width) {
--      self->private_impl.f_dst_x = 0u;
--      self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
--      if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
--        break;
--      }
--    }
--    v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
--    if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
--      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
--    }
--    v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
--    if (v_i >= ((uint64_t)(v_dst.len))) {
--      if (self->private_impl.f_bits_per_pixel == 1u) {
--        v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 31u) / 32u);
--        v_pixels_per_chunk = 32u;
--      } else if (self->private_impl.f_bits_per_pixel == 2u) {
--        v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 15u) / 16u);
--        v_pixels_per_chunk = 16u;
--      } else {
--        v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 7u) / 8u);
--        v_pixels_per_chunk = 8u;
--      }
--      while ((v_chunk_count >= 64u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 256u)) {
--        iop_a_src += 256u;
--        self->private_impl.f_dst_x = wuffs_base__u32__min(self->private_impl.f_width, ((uint32_t)(self->private_impl.f_dst_x + (v_pixels_per_chunk * 64u))));
--        v_chunk_count -= 64u;
--      }
--      while ((v_chunk_count >= 8u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 32u)) {
--        iop_a_src += 32u;
--        self->private_impl.f_dst_x = wuffs_base__u32__min(self->private_impl.f_width, ((uint32_t)(self->private_impl.f_dst_x + (v_pixels_per_chunk * 8u))));
--        v_chunk_count -= 8u;
--      }
--      while (v_chunk_count > 0u) {
--        if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
--          status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
--          goto ok;
--        }
--        iop_a_src += 4u;
--        self->private_impl.f_dst_x = wuffs_base__u32__min(self->private_impl.f_width, ((uint32_t)(self->private_impl.f_dst_x + (v_pixels_per_chunk * 1u))));
--        v_chunk_count -= 1u;
--      }
--      continue;
--    }
--    v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_i);
--    v_p0 = 0u;
--    if (self->private_impl.f_bits_per_pixel == 1u) {
--      v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 31u) / 32u);
--      v_chunk_count = wuffs_base__u32__min(v_chunk_count, 16u);
--      while ((v_chunk_count > 0u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 4u)) {
--        v_chunk_bits = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--        iop_a_src += 4u;
--        self->private_data.f_scratch[(v_p0 + 0u)] = ((uint8_t)((1u & (v_chunk_bits >> 31u))));
--        self->private_data.f_scratch[(v_p0 + 1u)] = ((uint8_t)((1u & (v_chunk_bits >> 30u))));
--        self->private_data.f_scratch[(v_p0 + 2u)] = ((uint8_t)((1u & (v_chunk_bits >> 29u))));
--        self->private_data.f_scratch[(v_p0 + 3u)] = ((uint8_t)((1u & (v_chunk_bits >> 28u))));
--        self->private_data.f_scratch[(v_p0 + 4u)] = ((uint8_t)((1u & (v_chunk_bits >> 27u))));
--        self->private_data.f_scratch[(v_p0 + 5u)] = ((uint8_t)((1u & (v_chunk_bits >> 26u))));
--        self->private_data.f_scratch[(v_p0 + 6u)] = ((uint8_t)((1u & (v_chunk_bits >> 25u))));
--        self->private_data.f_scratch[(v_p0 + 7u)] = ((uint8_t)((1u & (v_chunk_bits >> 24u))));
--        self->private_data.f_scratch[(v_p0 + 8u)] = ((uint8_t)((1u & (v_chunk_bits >> 23u))));
--        self->private_data.f_scratch[(v_p0 + 9u)] = ((uint8_t)((1u & (v_chunk_bits >> 22u))));
--        self->private_data.f_scratch[(v_p0 + 10u)] = ((uint8_t)((1u & (v_chunk_bits >> 21u))));
--        self->private_data.f_scratch[(v_p0 + 11u)] = ((uint8_t)((1u & (v_chunk_bits >> 20u))));
--        self->private_data.f_scratch[(v_p0 + 12u)] = ((uint8_t)((1u & (v_chunk_bits >> 19u))));
--        self->private_data.f_scratch[(v_p0 + 13u)] = ((uint8_t)((1u & (v_chunk_bits >> 18u))));
--        self->private_data.f_scratch[(v_p0 + 14u)] = ((uint8_t)((1u & (v_chunk_bits >> 17u))));
--        self->private_data.f_scratch[(v_p0 + 15u)] = ((uint8_t)((1u & (v_chunk_bits >> 16u))));
--        self->private_data.f_scratch[(v_p0 + 16u)] = ((uint8_t)((1u & (v_chunk_bits >> 15u))));
--        self->private_data.f_scratch[(v_p0 + 17u)] = ((uint8_t)((1u & (v_chunk_bits >> 14u))));
--        self->private_data.f_scratch[(v_p0 + 18u)] = ((uint8_t)((1u & (v_chunk_bits >> 13u))));
--        self->private_data.f_scratch[(v_p0 + 19u)] = ((uint8_t)((1u & (v_chunk_bits >> 12u))));
--        self->private_data.f_scratch[(v_p0 + 20u)] = ((uint8_t)((1u & (v_chunk_bits >> 11u))));
--        self->private_data.f_scratch[(v_p0 + 21u)] = ((uint8_t)((1u & (v_chunk_bits >> 10u))));
--        self->private_data.f_scratch[(v_p0 + 22u)] = ((uint8_t)((1u & (v_chunk_bits >> 9u))));
--        self->private_data.f_scratch[(v_p0 + 23u)] = ((uint8_t)((1u & (v_chunk_bits >> 8u))));
--        self->private_data.f_scratch[(v_p0 + 24u)] = ((uint8_t)((1u & (v_chunk_bits >> 7u))));
--        self->private_data.f_scratch[(v_p0 + 25u)] = ((uint8_t)((1u & (v_chunk_bits >> 6u))));
--        self->private_data.f_scratch[(v_p0 + 26u)] = ((uint8_t)((1u & (v_chunk_bits >> 5u))));
--        self->private_data.f_scratch[(v_p0 + 27u)] = ((uint8_t)((1u & (v_chunk_bits >> 4u))));
--        self->private_data.f_scratch[(v_p0 + 28u)] = ((uint8_t)((1u & (v_chunk_bits >> 3u))));
--        self->private_data.f_scratch[(v_p0 + 29u)] = ((uint8_t)((1u & (v_chunk_bits >> 2u))));
--        self->private_data.f_scratch[(v_p0 + 30u)] = ((uint8_t)((1u & (v_chunk_bits >> 1u))));
--        self->private_data.f_scratch[(v_p0 + 31u)] = ((uint8_t)((1u & (v_chunk_bits >> 0u))));
--        v_p0 = ((v_p0 & 511u) + 32u);
--        v_chunk_count -= 1u;
--      }
--    } else if (self->private_impl.f_bits_per_pixel == 2u) {
--      v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 15u) / 16u);
--      v_chunk_count = wuffs_base__u32__min(v_chunk_count, 32u);
--      while ((v_chunk_count > 0u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 4u)) {
--        v_chunk_bits = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--        iop_a_src += 4u;
--        self->private_data.f_scratch[(v_p0 + 0u)] = ((uint8_t)((3u & (v_chunk_bits >> 30u))));
--        self->private_data.f_scratch[(v_p0 + 1u)] = ((uint8_t)((3u & (v_chunk_bits >> 28u))));
--        self->private_data.f_scratch[(v_p0 + 2u)] = ((uint8_t)((3u & (v_chunk_bits >> 26u))));
--        self->private_data.f_scratch[(v_p0 + 3u)] = ((uint8_t)((3u & (v_chunk_bits >> 24u))));
--        self->private_data.f_scratch[(v_p0 + 4u)] = ((uint8_t)((3u & (v_chunk_bits >> 22u))));
--        self->private_data.f_scratch[(v_p0 + 5u)] = ((uint8_t)((3u & (v_chunk_bits >> 20u))));
--        self->private_data.f_scratch[(v_p0 + 6u)] = ((uint8_t)((3u & (v_chunk_bits >> 18u))));
--        self->private_data.f_scratch[(v_p0 + 7u)] = ((uint8_t)((3u & (v_chunk_bits >> 16u))));
--        self->private_data.f_scratch[(v_p0 + 8u)] = ((uint8_t)((3u & (v_chunk_bits >> 14u))));
--        self->private_data.f_scratch[(v_p0 + 9u)] = ((uint8_t)((3u & (v_chunk_bits >> 12u))));
--        self->private_data.f_scratch[(v_p0 + 10u)] = ((uint8_t)((3u & (v_chunk_bits >> 10u))));
--        self->private_data.f_scratch[(v_p0 + 11u)] = ((uint8_t)((3u & (v_chunk_bits >> 8u))));
--        self->private_data.f_scratch[(v_p0 + 12u)] = ((uint8_t)((3u & (v_chunk_bits >> 6u))));
--        self->private_data.f_scratch[(v_p0 + 13u)] = ((uint8_t)((3u & (v_chunk_bits >> 4u))));
--        self->private_data.f_scratch[(v_p0 + 14u)] = ((uint8_t)((3u & (v_chunk_bits >> 2u))));
--        self->private_data.f_scratch[(v_p0 + 15u)] = ((uint8_t)((3u & (v_chunk_bits >> 0u))));
--        v_p0 = ((v_p0 & 511u) + 16u);
--        v_chunk_count -= 1u;
--      }
--    } else {
--      v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 7u) / 8u);
--      v_chunk_count = wuffs_base__u32__min(v_chunk_count, 64u);
--      while ((v_chunk_count > 0u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 4u)) {
--        v_chunk_bits = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--        iop_a_src += 4u;
--        self->private_data.f_scratch[(v_p0 + 0u)] = ((uint8_t)((15u & (v_chunk_bits >> 28u))));
--        self->private_data.f_scratch[(v_p0 + 1u)] = ((uint8_t)((15u & (v_chunk_bits >> 24u))));
--        self->private_data.f_scratch[(v_p0 + 2u)] = ((uint8_t)((15u & (v_chunk_bits >> 20u))));
--        self->private_data.f_scratch[(v_p0 + 3u)] = ((uint8_t)((15u & (v_chunk_bits >> 16u))));
--        self->private_data.f_scratch[(v_p0 + 4u)] = ((uint8_t)((15u & (v_chunk_bits >> 12u))));
--        self->private_data.f_scratch[(v_p0 + 5u)] = ((uint8_t)((15u & (v_chunk_bits >> 8u))));
--        self->private_data.f_scratch[(v_p0 + 6u)] = ((uint8_t)((15u & (v_chunk_bits >> 4u))));
--        self->private_data.f_scratch[(v_p0 + 7u)] = ((uint8_t)((15u & (v_chunk_bits >> 0u))));
--        v_p0 = ((v_p0 & 511u) + 8u);
--        v_chunk_count -= 1u;
--      }
--    }
--    v_p0 = wuffs_base__u32__min(v_p0, wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x));
--    v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, v_p0));
--    if (v_n == 0u) {
--      status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
--      goto ok;
--    }
--    wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
--  }
--  status = wuffs_base__make_status(NULL);
--  goto ok;
--
--  ok:
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
--
--  return status;
--}
--
--// -------- func bmp.decoder.frame_dirty_rect
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
--wuffs_bmp__decoder__frame_dirty_rect(
--    const wuffs_bmp__decoder* self) {
--  if (!self) {
--    return wuffs_base__utility__empty_rect_ie_u32();
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_rect_ie_u32();
-+  if (last_column) {
-+    src_len--;
-   }
- 
--  return wuffs_base__utility__make_rect_ie_u32(
--      0u,
--      0u,
--      self->private_impl.f_width,
--      self->private_impl.f_height);
--}
-+  if (src_len < 32) {
-+    // This fallback is the same as the non-SIMD-capable code path.
-+    for (; src_len > 0u; src_len--) {
-+      uint32_t sv_major_m1 = sp_major[-1];
-+      uint32_t sv_minor_m1 = sp_minor[-1];
-+      uint32_t sv_major_p1 = sp_major[+1];
-+      uint32_t sv_minor_p1 = sp_minor[+1];
- 
--// -------- func bmp.decoder.num_animation_loops
-+      uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
-+                    (3u * ((uint32_t)(*sp_minor++)));
-+      *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
-+      *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
-+    }
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_bmp__decoder__num_animation_loops(
--    const wuffs_bmp__decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
-+  } else {
-+    while (src_len > 0u) {
-+      // Load 1+32+1 samples (six u8x32 vectors) from the major (jxx) and minor
-+      // (nxx) rows.
-+      //
-+      // major_p0 = [j00 j01 j02 j03 .. j28 j29 j30 j31]   // p0 = "plus  0"
-+      // minor_p0 = [n00 n01 n02 n03 .. n28 n29 n30 n31]   // p0 = "plus  0"
-+      // major_m1 = [jm1 j00 j01 j02 .. j27 j28 j29 j30]   // m1 = "minus 1"
-+      // minor_m1 = [nm1 n00 n01 n02 .. n27 n28 n29 n30]   // m1 = "minus 1"
-+      // major_p1 = [j01 j02 j03 j04 .. j29 j30 j31 j32]   // p1 = "plus  1"
-+      // minor_p1 = [n01 n02 n03 n04 .. n29 n30 n31 n32]   // p1 = "plus  1"
-+      __m256i major_p0 =
-+          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_major + 0));
-+      __m256i minor_p0 =
-+          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_minor + 0));
-+      __m256i major_m1 =
-+          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_major - 1));
-+      __m256i minor_m1 =
-+          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_minor - 1));
-+      __m256i major_p1 =
-+          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_major + 1));
-+      __m256i minor_p1 =
-+          _mm256_lddqu_si256((const __m256i*)(const void*)(sp_minor + 1));
- 
--  return 0u;
--}
-+      // Unpack, staying with u8x32 vectors.
-+      //
-+      // step1_p0_lo = [j00 n00 j01 n01 .. j07 n07  j16 n16 j17 n17 .. j23 n23]
-+      // step1_p0_hi = [j08 n08 j09 n09 .. j15 n15  j24 n24 j25 n25 .. j31 n31]
-+      // step1_m1_lo = [jm1 nm1 j00 n00 .. j06 n06  j15 n15 j16 n16 .. j22 n22]
-+      // step1_m1_hi = [j07 n07 j08 n08 .. j14 n14  j23 n23 j24 n24 .. j30 n30]
-+      // step1_p1_lo = [j01 n01 j02 n02 .. j08 n08  j17 n17 j18 n18 .. j24 n24]
-+      // step1_p1_hi = [j09 n09 j10 n10 .. j16 n16  j25 n25 j26 n26 .. j32 n32]
-+      __m256i step1_p0_lo = _mm256_unpacklo_epi8(major_p0, minor_p0);
-+      __m256i step1_p0_hi = _mm256_unpackhi_epi8(major_p0, minor_p0);
-+      __m256i step1_m1_lo = _mm256_unpacklo_epi8(major_m1, minor_m1);
-+      __m256i step1_m1_hi = _mm256_unpackhi_epi8(major_m1, minor_m1);
-+      __m256i step1_p1_lo = _mm256_unpacklo_epi8(major_p1, minor_p1);
-+      __m256i step1_p1_hi = _mm256_unpackhi_epi8(major_p1, minor_p1);
- 
--// -------- func bmp.decoder.num_decoded_frame_configs
-+      // Multiply-add to get u16x16 vectors.
-+      //
-+      // step2_p0_lo = [9*j00+3*n00 9*j01+3*n01 .. 9*j23+3*n23]
-+      // step2_p0_hi = [9*j08+3*n08 9*j09+3*n09 .. 9*j31+3*n31]
-+      // step2_m1_lo = [3*jm1+1*nm1 3*j00+1*n00 .. 3*j22+1*n22]
-+      // step2_m1_hi = [3*j07+1*n07 3*j08+1*n08 .. 3*j30+1*n30]
-+      // step2_p1_lo = [3*j01+1*n01 3*j02+1*n02 .. 3*j24+1*n24]
-+      // step2_p1_hi = [3*j09+1*n09 3*j10+1*n10 .. 3*j32+1*n32]
-+      const __m256i k0309 = _mm256_set1_epi16(0x0309);
-+      const __m256i k0103 = _mm256_set1_epi16(0x0103);
-+      __m256i step2_p0_lo = _mm256_maddubs_epi16(step1_p0_lo, k0309);
-+      __m256i step2_p0_hi = _mm256_maddubs_epi16(step1_p0_hi, k0309);
-+      __m256i step2_m1_lo = _mm256_maddubs_epi16(step1_m1_lo, k0103);
-+      __m256i step2_m1_hi = _mm256_maddubs_epi16(step1_m1_hi, k0103);
-+      __m256i step2_p1_lo = _mm256_maddubs_epi16(step1_p1_lo, k0103);
-+      __m256i step2_p1_hi = _mm256_maddubs_epi16(step1_p1_hi, k0103);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_bmp__decoder__num_decoded_frame_configs(
--    const wuffs_bmp__decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
-+      // Compute the weighted sums of (p0, m1) and (p0, p1). For example:
-+      //
-+      // step3_m1_lo[00] = ((9*j00) + (3*n00) + (3*jm1) + (1*nm1)) as u16
-+      // step3_p1_hi[15] = ((9*j31) + (3*n31) + (3*j32) + (1*n32)) as u16
-+      __m256i step3_m1_lo = _mm256_add_epi16(step2_p0_lo, step2_m1_lo);
-+      __m256i step3_m1_hi = _mm256_add_epi16(step2_p0_hi, step2_m1_hi);
-+      __m256i step3_p1_lo = _mm256_add_epi16(step2_p0_lo, step2_p1_lo);
-+      __m256i step3_p1_hi = _mm256_add_epi16(step2_p0_hi, step2_p1_hi);
- 
--  if (self->private_impl.f_call_sequence > 32u) {
--    return 1u;
--  }
--  return 0u;
--}
-+      // Bias by 8 (on the left) or 7 (on the right) and then divide by 16
-+      // (which is 9+3+3+1) to get a weighted average. On the left (m1), shift
-+      // the u16 right value by 4. On the right (p1), shift right by 4 and then
-+      // shift left by 8 so that, when still in the u16x16 little-endian
-+      // interpretation, we have:
-+      //  - m1_element =  (etcetera + 8) >> 4
-+      //  - p1_element = ((etcetera + 7) >> 4) << 8
-+      //
-+      // step4_m1_lo = [0x00?? 0x00?? ... 0x00?? 0x00??]
-+      // step4_p1_lo = [0x??00 0x??00 ... 0x??00 0x??00]
-+      // step4_m1_hi = [0x00?? 0x00?? ... 0x00?? 0x00??]
-+      // step4_p1_hi = [0x??00 0x??00 ... 0x??00 0x??00]
-+      __m256i step4_m1_lo = _mm256_srli_epi16(
-+          _mm256_add_epi16(step3_m1_lo, _mm256_set1_epi16(8)), 4);
-+      __m256i step4_p1_lo = _mm256_slli_epi16(
-+          _mm256_srli_epi16(_mm256_add_epi16(step3_p1_lo, _mm256_set1_epi16(7)),
-+                            4),
-+          8);
-+      __m256i step4_m1_hi = _mm256_srli_epi16(
-+          _mm256_add_epi16(step3_m1_hi, _mm256_set1_epi16(8)), 4);
-+      __m256i step4_p1_hi = _mm256_slli_epi16(
-+          _mm256_srli_epi16(_mm256_add_epi16(step3_p1_hi, _mm256_set1_epi16(7)),
-+                            4),
-+          8);
- 
--// -------- func bmp.decoder.num_decoded_frames
-+      // Bitwise-or two "0x00"-rich u16x16 vectors to get a u8x32 vector. Do
-+      // that twice. Once for the low columns and once for the high columns.
-+      //
-+      // In terms of jxx (major row) or nxx (minor row) source samples:
-+      //  - low  columns means ( 0 ..  8; 16 .. 24).
-+      //  - high columns means ( 8 .. 16; 24 .. 32).
-+      //
-+      // In terms of dxx destination samples (there are twice as many):
-+      //  - low  columns means ( 0 .. 16; 32 .. 48).
-+      //  - high columns means (16 .. 32; 48 .. 64).
-+      //
-+      // step5_lo = [d00 d01 .. d14 d15  d32 d33 .. d46 d47]
-+      // step5_hi = [d16 d17 .. d30 d31  d48 d49 .. d62 d63]
-+      //
-+      // The d00, d02 ... d62 even elements come from (p0, m1) weighted sums.
-+      // The d01, d03 ... d63 odd  elements come from (p0, p1) weighted sums.
-+      __m256i step5_lo = _mm256_or_si256(step4_m1_lo, step4_p1_lo);
-+      __m256i step5_hi = _mm256_or_si256(step4_m1_hi, step4_p1_hi);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_bmp__decoder__num_decoded_frames(
--    const wuffs_bmp__decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
-+      // Permute and store.
-+      //
-+      // step6_00_31 = [d00 d01 .. d14 d15  d16 d17 .. d30 d31]
-+      // step6_32_63 = [d32 d33 .. d46 d47  d48 d49 .. d62 d63]
-+      __m256i step6_00_31 = _mm256_permute2x128_si256(step5_lo, step5_hi, 0x20);
-+      __m256i step6_32_63 = _mm256_permute2x128_si256(step5_lo, step5_hi, 0x31);
-+      _mm256_storeu_si256((__m256i*)(void*)(dp + 0x00), step6_00_31);
-+      _mm256_storeu_si256((__m256i*)(void*)(dp + 0x20), step6_32_63);
- 
--  if (self->private_impl.f_call_sequence > 64u) {
--    return 1u;
-+      // Advance by up to 32 source samples (64 destination samples). The first
-+      // iteration might be smaller than 32 so that all of the remaining steps
-+      // are exactly 32.
-+      size_t n = 32u - (31u & (0u - src_len));
-+      dp += 2u * n;
-+      sp_major += n;
-+      sp_minor += n;
-+      src_len -= n;
-+    }
-   }
--  return 0u;
--}
- 
--// -------- func bmp.decoder.restart_frame
-+  if (last_column) {
-+    uint32_t sv_major_m1 = sp_major[-1];
-+    uint32_t sv_minor_m1 = sp_minor[-1];
-+    uint32_t sv_major_p1 = sp_major[+0];  // Clamp offset to zero.
-+    uint32_t sv_minor_p1 = sp_minor[+0];  // Clamp offset to zero.
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_bmp__decoder__restart_frame(
--    wuffs_bmp__decoder* self,
--    uint64_t a_index,
--    uint64_t a_io_position) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
-+    uint32_t sv = (9u * ((uint32_t)(*sp_major++))) +  //
-+                  (3u * ((uint32_t)(*sp_minor++)));
-+    *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u);
-+    *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u);
-   }
- 
--  if (self->private_impl.f_call_sequence < 32u) {
--    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
--  }
--  if (a_index != 0u) {
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  self->private_impl.f_call_sequence = 40u;
--  self->private_impl.f_frame_config_io_position = a_io_position;
--  return wuffs_base__make_status(NULL);
-+  return dst_ptr;
- }
-+#endif
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
-+// ‼ WUFFS MULTI-FILE SECTION -x86_avx2
- 
--// -------- func bmp.decoder.set_report_metadata
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_bmp__decoder__set_report_metadata(
--    wuffs_bmp__decoder* self,
--    uint32_t a_fourcc,
--    bool a_report) {
--  return wuffs_base__make_empty_struct();
--}
-+#endif  // !defined(WUFFS_CONFIG__MODULES) ||
-+        // defined(WUFFS_CONFIG__MODULE__BASE) ||
-+        // defined(WUFFS_CONFIG__MODULE__BASE__PIXCONV)
- 
--// -------- func bmp.decoder.tell_me_more
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
-+    defined(WUFFS_CONFIG__MODULE__BASE__UTF8)
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_bmp__decoder__tell_me_more(
--    wuffs_bmp__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__more_information* a_minfo,
--    wuffs_base__io_buffer* a_src) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--  if (!a_dst || !a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 4)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
--  }
--  self->private_impl.active_coroutine = 0;
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+// ---------------- Unicode and UTF-8
- 
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+WUFFS_BASE__MAYBE_STATIC size_t  //
-+wuffs_base__utf_8__encode(wuffs_base__slice_u8 dst, uint32_t code_point) {
-+  if (code_point <= 0x7F) {
-+    if (dst.len >= 1) {
-+      dst.ptr[0] = (uint8_t)(code_point);
-+      return 1;
-+    }
- 
--  uint32_t coro_susp_point = self->private_impl.p_tell_me_more[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+  } else if (code_point <= 0x07FF) {
-+    if (dst.len >= 2) {
-+      dst.ptr[0] = (uint8_t)(0xC0 | ((code_point >> 6)));
-+      dst.ptr[1] = (uint8_t)(0x80 | ((code_point >> 0) & 0x3F));
-+      return 2;
-+    }
- 
--    while (true) {
--      {
--        wuffs_base__status t_0 = wuffs_bmp__decoder__do_tell_me_more(self, a_dst, a_minfo, a_src);
--        v_status = t_0;
--      }
--      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_bmp__error__truncated_input);
--        goto exit;
--      }
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+  } else if (code_point <= 0xFFFF) {
-+    if ((dst.len >= 3) && ((code_point < 0xD800) || (0xDFFF < code_point))) {
-+      dst.ptr[0] = (uint8_t)(0xE0 | ((code_point >> 12)));
-+      dst.ptr[1] = (uint8_t)(0x80 | ((code_point >> 6) & 0x3F));
-+      dst.ptr[2] = (uint8_t)(0x80 | ((code_point >> 0) & 0x3F));
-+      return 3;
-     }
- 
--    ok:
--    self->private_impl.p_tell_me_more[0] = 0;
--    goto exit;
-+  } else if (code_point <= 0x10FFFF) {
-+    if (dst.len >= 4) {
-+      dst.ptr[0] = (uint8_t)(0xF0 | ((code_point >> 18)));
-+      dst.ptr[1] = (uint8_t)(0x80 | ((code_point >> 12) & 0x3F));
-+      dst.ptr[2] = (uint8_t)(0x80 | ((code_point >> 6) & 0x3F));
-+      dst.ptr[3] = (uint8_t)(0x80 | ((code_point >> 0) & 0x3F));
-+      return 4;
-+    }
-   }
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_tell_me_more[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 4 : 0;
--
--  goto exit;
--  exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--  }
--  return status;
-+  return 0;
- }
- 
--// -------- func bmp.decoder.do_tell_me_more
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bmp__decoder__do_tell_me_more(
--    wuffs_bmp__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__more_information* a_minfo,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+// wuffs_base__utf_8__byte_length_minus_1 is the byte length (minus 1) of a
-+// UTF-8 encoded code point, based on the encoding's initial byte.
-+//  - 0x00 is 1-byte UTF-8 (ASCII).
-+//  - 0x01 is the start of 2-byte UTF-8.
-+//  - 0x02 is the start of 3-byte UTF-8.
-+//  - 0x03 is the start of 4-byte UTF-8.
-+//  - 0x40 is a UTF-8 tail byte.
-+//  - 0x80 is invalid UTF-8.
-+//
-+// RFC 3629 (UTF-8) gives this grammar for valid UTF-8:
-+//    UTF8-1      = %x00-7F
-+//    UTF8-2      = %xC2-DF UTF8-tail
-+//    UTF8-3      = %xE0 %xA0-BF UTF8-tail / %xE1-EC 2( UTF8-tail ) /
-+//                  %xED %x80-9F UTF8-tail / %xEE-EF 2( UTF8-tail )
-+//    UTF8-4      = %xF0 %x90-BF 2( UTF8-tail ) / %xF1-F3 3( UTF8-tail ) /
-+//                  %xF4 %x80-8F 2( UTF8-tail )
-+//    UTF8-tail   = %x80-BF
-+static const uint8_t wuffs_base__utf_8__byte_length_minus_1[256] = {
-+    // 0     1     2     3     4     5     6     7
-+    // 8     9     A     B     C     D     E     F
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x00 ..= 0x07.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x08 ..= 0x0F.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x10 ..= 0x17.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x18 ..= 0x1F.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x20 ..= 0x27.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x28 ..= 0x2F.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x30 ..= 0x37.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x38 ..= 0x3F.
- 
--  if (self->private_impl.f_io_redirect_fourcc <= 1u) {
--    status = wuffs_base__make_status(wuffs_base__error__no_more_information);
--    goto exit;
--  }
--  if (a_minfo != NULL) {
--    wuffs_base__more_information__set(a_minfo,
--        1u,
--        self->private_impl.f_io_redirect_fourcc,
--        0u,
--        self->private_impl.f_io_redirect_pos,
--        18446744073709551615u);
--  }
--  self->private_impl.f_io_redirect_fourcc = 1u;
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x40 ..= 0x47.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x48 ..= 0x4F.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x50 ..= 0x57.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x58 ..= 0x5F.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x60 ..= 0x67.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x68 ..= 0x6F.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x70 ..= 0x77.
-+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0x78 ..= 0x7F.
- 
--  goto ok;
--  ok:
--  goto exit;
--  exit:
--  return status;
--}
-+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0x80 ..= 0x87.
-+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0x88 ..= 0x8F.
-+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0x90 ..= 0x97.
-+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0x98 ..= 0x9F.
-+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0xA0 ..= 0xA7.
-+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0xA8 ..= 0xAF.
-+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0xB0 ..= 0xB7.
-+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0xB8 ..= 0xBF.
- 
--// -------- func bmp.decoder.history_retain_length
-+    0x80, 0x80, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,  // 0xC0 ..= 0xC7.
-+    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,  // 0xC8 ..= 0xCF.
-+    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,  // 0xD0 ..= 0xD7.
-+    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,  // 0xD8 ..= 0xDF.
-+    0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,  // 0xE0 ..= 0xE7.
-+    0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,  // 0xE8 ..= 0xEF.
-+    0x03, 0x03, 0x03, 0x03, 0x03, 0x80, 0x80, 0x80,  // 0xF0 ..= 0xF7.
-+    0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,  // 0xF8 ..= 0xFF.
-+    // 0     1     2     3     4     5     6     7
-+    // 8     9     A     B     C     D     E     F
-+};
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_bmp__decoder__history_retain_length(
--    const wuffs_bmp__decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__utf_8__next__output  //
-+wuffs_base__utf_8__next(const uint8_t* s_ptr, size_t s_len) {
-+  if (s_len == 0) {
-+    return wuffs_base__make_utf_8__next__output(0, 0);
-   }
-+  uint32_t c = s_ptr[0];
-+  switch (wuffs_base__utf_8__byte_length_minus_1[c & 0xFF]) {
-+    case 0:
-+      return wuffs_base__make_utf_8__next__output(c, 1);
- 
--  return 0u;
--}
-+    case 1:
-+      if (s_len < 2) {
-+        break;
-+      }
-+      c = wuffs_base__peek_u16le__no_bounds_check(s_ptr);
-+      if ((c & 0xC000) != 0x8000) {
-+        break;
-+      }
-+      c = (0x0007C0 & (c << 6)) | (0x00003F & (c >> 8));
-+      return wuffs_base__make_utf_8__next__output(c, 2);
- 
--// -------- func bmp.decoder.workbuf_len
-+    case 2:
-+      if (s_len < 3) {
-+        break;
-+      }
-+      c = wuffs_base__peek_u24le__no_bounds_check(s_ptr);
-+      if ((c & 0xC0C000) != 0x808000) {
-+        break;
-+      }
-+      c = (0x00F000 & (c << 12)) | (0x000FC0 & (c >> 2)) |
-+          (0x00003F & (c >> 16));
-+      if ((c <= 0x07FF) || ((0xD800 <= c) && (c <= 0xDFFF))) {
-+        break;
-+      }
-+      return wuffs_base__make_utf_8__next__output(c, 3);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_bmp__decoder__workbuf_len(
--    const wuffs_bmp__decoder* self) {
--  if (!self) {
--    return wuffs_base__utility__empty_range_ii_u64();
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_range_ii_u64();
-+    case 3:
-+      if (s_len < 4) {
-+        break;
-+      }
-+      c = wuffs_base__peek_u32le__no_bounds_check(s_ptr);
-+      if ((c & 0xC0C0C000) != 0x80808000) {
-+        break;
-+      }
-+      c = (0x1C0000 & (c << 18)) | (0x03F000 & (c << 4)) |
-+          (0x000FC0 & (c >> 10)) | (0x00003F & (c >> 24));
-+      if ((c <= 0xFFFF) || (0x110000 <= c)) {
-+        break;
-+      }
-+      return wuffs_base__make_utf_8__next__output(c, 4);
-   }
- 
--  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
-+  return wuffs_base__make_utf_8__next__output(
-+      WUFFS_BASE__UNICODE_REPLACEMENT_CHARACTER, 1);
- }
- 
--// -------- func bmp.decoder.read_palette
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bmp__decoder__read_palette(
--    wuffs_bmp__decoder* self,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  uint32_t v_i = 0;
--  uint32_t v_argb = 0;
--
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
--
--  uint32_t coro_susp_point = self->private_impl.p_read_palette[0];
--  if (coro_susp_point) {
--    v_i = self->private_data.s_read_palette[0].v_i;
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__utf_8__next__output  //
-+wuffs_base__utf_8__next_from_end(const uint8_t* s_ptr, size_t s_len) {
-+  if (s_len == 0) {
-+    return wuffs_base__make_utf_8__next__output(0, 0);
-   }
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+  const uint8_t* ptr = &s_ptr[s_len - 1];
-+  if (*ptr < 0x80) {
-+    return wuffs_base__make_utf_8__next__output(*ptr, 1);
- 
--    if (self->private_impl.f_bitmap_info_len == 12u) {
--      while ((v_i < 256u) && (self->private_impl.f_padding >= 3u)) {
--        self->private_impl.f_padding -= 3u;
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--          uint32_t t_0;
--          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
--            t_0 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
--            iop_a_src += 3;
--          } else {
--            self->private_data.s_read_palette[0].scratch = 0;
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--            while (true) {
--              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                goto suspend;
--              }
--              uint64_t* scratch = &self->private_data.s_read_palette[0].scratch;
--              uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
--              *scratch <<= 8;
--              *scratch >>= 8;
--              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
--              if (num_bits_0 == 16) {
--                t_0 = ((uint32_t)(*scratch));
--                break;
--              }
--              num_bits_0 += 8u;
--              *scratch |= ((uint64_t)(num_bits_0)) << 56;
--            }
--          }
--          v_argb = t_0;
--        }
--        v_argb |= 4278190080u;
--        self->private_data.f_src_palette[((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u)));
--        self->private_data.f_src_palette[((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u)));
--        self->private_data.f_src_palette[((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u)));
--        self->private_data.f_src_palette[((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u)));
--        v_i += 1u;
-+  } else if (*ptr < 0xC0) {
-+    const uint8_t* too_far = &s_ptr[(s_len > 4) ? (s_len - 4) : 0];
-+    uint32_t n = 1;
-+    while (ptr != too_far) {
-+      ptr--;
-+      n++;
-+      if (*ptr < 0x80) {
-+        break;
-+      } else if (*ptr < 0xC0) {
-+        continue;
-       }
--    } else {
--      while ((v_i < 256u) && (self->private_impl.f_padding >= 4u)) {
--        self->private_impl.f_padding -= 4u;
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--          uint32_t t_1;
--          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--            t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--            iop_a_src += 4;
--          } else {
--            self->private_data.s_read_palette[0].scratch = 0;
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--            while (true) {
--              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                goto suspend;
--              }
--              uint64_t* scratch = &self->private_data.s_read_palette[0].scratch;
--              uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
--              *scratch <<= 8;
--              *scratch >>= 8;
--              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
--              if (num_bits_1 == 24) {
--                t_1 = ((uint32_t)(*scratch));
--                break;
--              }
--              num_bits_1 += 8u;
--              *scratch |= ((uint64_t)(num_bits_1)) << 56;
--            }
--          }
--          v_argb = t_1;
--        }
--        v_argb |= 4278190080u;
--        self->private_data.f_src_palette[((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u)));
--        self->private_data.f_src_palette[((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u)));
--        self->private_data.f_src_palette[((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u)));
--        self->private_data.f_src_palette[((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u)));
--        v_i += 1u;
-+      wuffs_base__utf_8__next__output o = wuffs_base__utf_8__next(ptr, n);
-+      if (o.byte_length != n) {
-+        break;
-       }
-+      return o;
-     }
--    while (v_i < 256u) {
--      self->private_data.f_src_palette[((4u * v_i) + 0u)] = 0u;
--      self->private_data.f_src_palette[((4u * v_i) + 1u)] = 0u;
--      self->private_data.f_src_palette[((4u * v_i) + 2u)] = 0u;
--      self->private_data.f_src_palette[((4u * v_i) + 3u)] = 255u;
--      v_i += 1u;
--    }
--
--    goto ok;
--    ok:
--    self->private_impl.p_read_palette[0] = 0;
--    goto exit;
--  }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_read_palette[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_read_palette[0].v_i = v_i;
--
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
- 
--  return status;
-+  return wuffs_base__make_utf_8__next__output(
-+      WUFFS_BASE__UNICODE_REPLACEMENT_CHARACTER, 1);
- }
- 
--// -------- func bmp.decoder.process_masks
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bmp__decoder__process_masks(
--    wuffs_bmp__decoder* self) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  uint32_t v_i = 0;
--  uint32_t v_mask = 0;
--  uint32_t v_n = 0;
--
--  while (v_i < 4u) {
--    v_mask = self->private_impl.f_channel_masks[v_i];
--    if (v_mask != 0u) {
--      v_n = 0u;
--      while ((v_mask & 1u) == 0u) {
--        v_n += 1u;
--        v_mask >>= 1u;
--      }
--      self->private_impl.f_channel_shifts[v_i] = ((uint8_t)((v_n & 31u)));
--      v_n = 0u;
--      while ((v_mask & 1u) == 1u) {
--        v_n += 1u;
--        v_mask >>= 1u;
--      }
--      if ((v_mask != 0u) || (v_n > 32u)) {
--        status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
--        goto exit;
--      }
--      self->private_impl.f_channel_num_bits[v_i] = ((uint8_t)(v_n));
--    } else if (v_i != 3u) {
--      status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
--      goto exit;
-+WUFFS_BASE__MAYBE_STATIC size_t  //
-+wuffs_base__utf_8__longest_valid_prefix(const uint8_t* s_ptr, size_t s_len) {
-+  // TODO: possibly optimize the all-ASCII case (4 or 8 bytes at a time).
-+  //
-+  // TODO: possibly optimize this by manually inlining the
-+  // wuffs_base__utf_8__next calls.
-+  size_t original_len = s_len;
-+  while (s_len > 0) {
-+    wuffs_base__utf_8__next__output o = wuffs_base__utf_8__next(s_ptr, s_len);
-+    if ((o.code_point > 0x7F) && (o.byte_length == 1)) {
-+      break;
-     }
--    v_i += 1u;
-+    s_ptr += o.byte_length;
-+    s_len -= o.byte_length;
-   }
-+  return original_len - s_len;
-+}
- 
--  goto ok;
--  ok:
--  goto exit;
--  exit:
--  return status;
-+WUFFS_BASE__MAYBE_STATIC size_t  //
-+wuffs_base__ascii__longest_valid_prefix(const uint8_t* s_ptr, size_t s_len) {
-+  // TODO: possibly optimize this by checking 4 or 8 bytes at a time.
-+  const uint8_t* original_ptr = s_ptr;
-+  const uint8_t* p = s_ptr;
-+  const uint8_t* q = s_ptr + s_len;
-+  for (; (p != q) && ((*p & 0x80) == 0); p++) {
-+  }
-+  return (size_t)(p - original_ptr);
- }
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BMP)
-+#endif  // !defined(WUFFS_CONFIG__MODULES) ||
-+        // defined(WUFFS_CONFIG__MODULE__BASE) ||
-+        // defined(WUFFS_CONFIG__MODULE__BASE__UTF8)
- 
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BZIP2)
-+#ifdef __cplusplus
-+}  // extern "C"
-+#endif
- 
--// ---------------- Status Codes Implementations
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ADLER32)
- 
--const char wuffs_bzip2__error__bad_huffman_code_over_subscribed[] = "#bzip2: bad Huffman code (over-subscribed)";
--const char wuffs_bzip2__error__bad_huffman_code_under_subscribed[] = "#bzip2: bad Huffman code (under-subscribed)";
--const char wuffs_bzip2__error__bad_block_header[] = "#bzip2: bad block header";
--const char wuffs_bzip2__error__bad_block_length[] = "#bzip2: bad block length";
--const char wuffs_bzip2__error__bad_checksum[] = "#bzip2: bad checksum";
--const char wuffs_bzip2__error__bad_header[] = "#bzip2: bad header";
--const char wuffs_bzip2__error__bad_number_of_sections[] = "#bzip2: bad number of sections";
--const char wuffs_bzip2__error__truncated_input[] = "#bzip2: truncated input";
--const char wuffs_bzip2__error__unsupported_block_randomization[] = "#bzip2: unsupported block randomization";
--const char wuffs_bzip2__error__internal_error_inconsistent_huffman_decoder_state[] = "#bzip2: internal error: inconsistent Huffman decoder state";
-+// ---------------- Status Codes Implementations
- 
- // ---------------- Private Consts
- 
--static const uint8_t
--WUFFS_BZIP2__CLAMP_TO_5[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  0, 1, 2, 3, 4, 5, 5, 5,
--};
--
--static const uint32_t
--WUFFS_BZIP2__REV_CRC32_TABLE[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  0, 79764919, 159529838, 222504665, 319059676, 398814059, 445009330, 507990021,
--  638119352, 583659535, 797628118, 726387553, 890018660, 835552979, 1015980042, 944750013,
--  1276238704, 1221641927, 1167319070, 1095957929, 1595256236, 1540665371, 1452775106, 1381403509,
--  1780037320, 1859660671, 1671105958, 1733955601, 2031960084, 2111593891, 1889500026, 1952343757,
--  2552477408, 2632100695, 2443283854, 2506133561, 2334638140, 2414271883, 2191915858, 2254759653,
--  3190512472, 3135915759, 3081330742, 3009969537, 2905550212, 2850959411, 2762807018, 2691435357,
--  3560074640, 3505614887, 3719321342, 3648080713, 3342211916, 3287746299, 3467911202, 3396681109,
--  4063920168, 4143685023, 4223187782, 4286162673, 3779000052, 3858754371, 3904687514, 3967668269,
--  881225847, 809987520, 1023691545, 969234094, 662832811, 591600412, 771767749, 717299826,
--  311336399, 374308984, 453813921, 533576470, 25881363, 88864420, 134795389, 214552010,
--  2023205639, 2086057648, 1897238633, 1976864222, 1804852699, 1867694188, 1645340341, 1724971778,
--  1587496639, 1516133128, 1461550545, 1406951526, 1302016099, 1230646740, 1142491917, 1087903418,
--  2896545431, 2825181984, 2770861561, 2716262478, 3215044683, 3143675388, 3055782693, 3001194130,
--  2326604591, 2389456536, 2200899649, 2280525302, 2578013683, 2640855108, 2418763421, 2498394922,
--  3769900519, 3832873040, 3912640137, 3992402750, 4088425275, 4151408268, 4197601365, 4277358050,
--  3334271071, 3263032808, 3476998961, 3422541446, 3585640067, 3514407732, 3694837229, 3640369242,
--  1762451694, 1842216281, 1619975040, 1682949687, 2047383090, 2127137669, 1938468188, 2001449195,
--  1325665622, 1271206113, 1183200824, 1111960463, 1543535498, 1489069629, 1434599652, 1363369299,
--  622672798, 568075817, 748617968, 677256519, 907627842, 853037301, 1067152940, 995781531,
--  51762726, 131386257, 177728840, 240578815, 269590778, 349224269, 429104020, 491947555,
--  4046411278, 4126034873, 4172115296, 4234965207, 3794477266, 3874110821, 3953728444, 4016571915,
--  3609705398, 3555108353, 3735388376, 3664026991, 3290680682, 3236090077, 3449943556, 3378572211,
--  3174993278, 3120533705, 3032266256, 2961025959, 2923101090, 2868635157, 2813903052, 2742672763,
--  2604032198, 2683796849, 2461293480, 2524268063, 2284983834, 2364738477, 2175806836, 2238787779,
--  1569362073, 1498123566, 1409854455, 1355396672, 1317987909, 1246755826, 1192025387, 1137557660,
--  2072149281, 2135122070, 1912620623, 1992383480, 1753615357, 1816598090, 1627664531, 1707420964,
--  295390185, 358241886, 404320391, 483945776, 43990325, 106832002, 186451547, 266083308,
--  932423249, 861060070, 1041341759, 986742920, 613929101, 542559546, 756411363, 701822548,
--  3316196985, 3244833742, 3425377559, 3370778784, 3601682597, 3530312978, 3744426955, 3689838204,
--  3819031489, 3881883254, 3928223919, 4007849240, 4037393693, 4100235434, 4180117107, 4259748804,
--  2310601993, 2373574846, 2151335527, 2231098320, 2596047829, 2659030626, 2470359227, 2550115596,
--  2947551409, 2876312838, 2788305887, 2733848168, 3165939309, 3094707162, 3040238851, 2985771188,
--};
--
- // ---------------- Private Initializer Prototypes
- 
- // ---------------- Private Function Prototypes
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bzip2__decoder__do_transform_io(
--    wuffs_bzip2__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__slice_u8 a_workbuf);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bzip2__decoder__prepare_block(
--    wuffs_bzip2__decoder* self,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bzip2__decoder__read_code_lengths(
--    wuffs_bzip2__decoder* self,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bzip2__decoder__build_huffman_tree(
--    wuffs_bzip2__decoder* self,
--    uint32_t a_which);
--
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__empty_struct
--wuffs_bzip2__decoder__build_huffman_table(
--    wuffs_bzip2__decoder* self,
--    uint32_t a_which);
-+wuffs_adler32__hasher__up(
-+    wuffs_adler32__hasher* self,
-+    wuffs_base__slice_u8 a_x);
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__empty_struct
--wuffs_bzip2__decoder__invert_bwt(
--    wuffs_bzip2__decoder* self);
-+wuffs_adler32__hasher__up__choosy_default(
-+    wuffs_adler32__hasher* self,
-+    wuffs_base__slice_u8 a_x);
- 
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__empty_struct
--wuffs_bzip2__decoder__flush_fast(
--    wuffs_bzip2__decoder* self,
--    wuffs_base__io_buffer* a_dst);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bzip2__decoder__flush_slow(
--    wuffs_bzip2__decoder* self,
--    wuffs_base__io_buffer* a_dst);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bzip2__decoder__decode_huffman_fast(
--    wuffs_bzip2__decoder* self,
--    wuffs_base__io_buffer* a_src);
-+wuffs_adler32__hasher__up_arm_neon(
-+    wuffs_adler32__hasher* self,
-+    wuffs_base__slice_u8 a_x);
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
- 
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bzip2__decoder__decode_huffman_slow(
--    wuffs_bzip2__decoder* self,
--    wuffs_base__io_buffer* a_src);
-+static wuffs_base__empty_struct
-+wuffs_adler32__hasher__up_x86_sse42(
-+    wuffs_adler32__hasher* self,
-+    wuffs_base__slice_u8 a_x);
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
- 
- // ---------------- VTables
- 
--const wuffs_base__io_transformer__func_ptrs
--wuffs_bzip2__decoder__func_ptrs_for__wuffs_base__io_transformer = {
-+const wuffs_base__hasher_u32__func_ptrs
-+wuffs_adler32__hasher__func_ptrs_for__wuffs_base__hasher_u32 = {
-+  (uint32_t(*)(const void*))(&wuffs_adler32__hasher__checksum_u32),
-   (uint64_t(*)(const void*,
--      uint32_t))(&wuffs_bzip2__decoder__get_quirk),
--  (uint64_t(*)(const void*))(&wuffs_bzip2__decoder__history_retain_length),
-+      uint32_t))(&wuffs_adler32__hasher__get_quirk),
-   (wuffs_base__status(*)(void*,
-       uint32_t,
--      uint64_t))(&wuffs_bzip2__decoder__set_quirk),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__io_buffer*,
--      wuffs_base__io_buffer*,
--      wuffs_base__slice_u8))(&wuffs_bzip2__decoder__transform_io),
--  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_bzip2__decoder__workbuf_len),
-+      uint64_t))(&wuffs_adler32__hasher__set_quirk),
-+  (wuffs_base__empty_struct(*)(void*,
-+      wuffs_base__slice_u8))(&wuffs_adler32__hasher__update),
-+  (uint32_t(*)(void*,
-+      wuffs_base__slice_u8))(&wuffs_adler32__hasher__update_u32),
- };
- 
- // ---------------- Initializer Implementations
- 
- wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_bzip2__decoder__initialize(
--    wuffs_bzip2__decoder* self,
-+wuffs_adler32__hasher__initialize(
-+    wuffs_adler32__hasher* self,
-     size_t sizeof_star_self,
-     uint64_t wuffs_version,
-     uint32_t options){
-@@ -30559,23 +30841,25 @@ wuffs_bzip2__decoder__initialize(
-     }
-   }
- 
-+  self->private_impl.choosy_up = &wuffs_adler32__hasher__up__choosy_default;
-+
-   self->private_impl.magic = WUFFS_BASE__MAGIC;
--  self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
--      wuffs_base__io_transformer__vtable_name;
--  self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
--      (const void*)(&wuffs_bzip2__decoder__func_ptrs_for__wuffs_base__io_transformer);
-+  self->private_impl.vtable_for__wuffs_base__hasher_u32.vtable_name =
-+      wuffs_base__hasher_u32__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__hasher_u32.function_pointers =
-+      (const void*)(&wuffs_adler32__hasher__func_ptrs_for__wuffs_base__hasher_u32);
-   return wuffs_base__make_status(NULL);
- }
- 
--wuffs_bzip2__decoder*
--wuffs_bzip2__decoder__alloc(void) {
--  wuffs_bzip2__decoder* x =
--      (wuffs_bzip2__decoder*)(calloc(sizeof(wuffs_bzip2__decoder), 1));
-+wuffs_adler32__hasher*
-+wuffs_adler32__hasher__alloc(void) {
-+  wuffs_adler32__hasher* x =
-+      (wuffs_adler32__hasher*)(calloc(1, sizeof(wuffs_adler32__hasher)));
-   if (!x) {
-     return NULL;
-   }
--  if (wuffs_bzip2__decoder__initialize(
--      x, sizeof(wuffs_bzip2__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+  if (wuffs_adler32__hasher__initialize(
-+      x, sizeof(wuffs_adler32__hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-     free(x);
-     return NULL;
-   }
-@@ -30583,18 +30867,18 @@ wuffs_bzip2__decoder__alloc(void) {
- }
- 
- size_t
--sizeof__wuffs_bzip2__decoder(void) {
--  return sizeof(wuffs_bzip2__decoder);
-+sizeof__wuffs_adler32__hasher(void) {
-+  return sizeof(wuffs_adler32__hasher);
- }
- 
- // ---------------- Function Implementations
- 
--// -------- func bzip2.decoder.get_quirk
-+// -------- func adler32.hasher.get_quirk
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_bzip2__decoder__get_quirk(
--    const wuffs_bzip2__decoder* self,
-+wuffs_adler32__hasher__get_quirk(
-+    const wuffs_adler32__hasher* self,
-     uint32_t a_key) {
-   if (!self) {
-     return 0;
-@@ -30607,12 +30891,12 @@ wuffs_bzip2__decoder__get_quirk(
-   return 0u;
- }
- 
--// -------- func bzip2.decoder.set_quirk
-+// -------- func adler32.hasher.set_quirk
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_bzip2__decoder__set_quirk(
--    wuffs_bzip2__decoder* self,
-+wuffs_adler32__hasher__set_quirk(
-+    wuffs_adler32__hasher* self,
-     uint32_t a_key,
-     uint64_t a_value) {
-   if (!self) {
-@@ -30625,369 +30909,699 @@ wuffs_bzip2__decoder__set_quirk(
-         : wuffs_base__error__initialize_not_called);
-   }
- 
--  if (a_key == 1u) {
--    self->private_impl.f_ignore_checksum = (a_value > 0u);
--    return wuffs_base__make_status(NULL);
--  }
-   return wuffs_base__make_status(wuffs_base__error__unsupported_option);
- }
- 
--// -------- func bzip2.decoder.history_retain_length
-+// -------- func adler32.hasher.update
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_bzip2__decoder__history_retain_length(
--    const wuffs_bzip2__decoder* self) {
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_adler32__hasher__update(
-+    wuffs_adler32__hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-   if (!self) {
--    return 0;
-+    return wuffs_base__make_empty_struct();
-   }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_empty_struct();
-   }
- 
--  return 0u;
-+  if ( ! self->private_impl.f_started) {
-+    self->private_impl.f_started = true;
-+    self->private_impl.f_state = 1u;
-+    self->private_impl.choosy_up = (
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
-+        wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_adler32__hasher__up_arm_neon :
-+#endif
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_adler32__hasher__up_x86_sse42 :
-+#endif
-+        self->private_impl.choosy_up);
-+  }
-+  wuffs_adler32__hasher__up(self, a_x);
-+  return wuffs_base__make_empty_struct();
- }
- 
--// -------- func bzip2.decoder.workbuf_len
-+// -------- func adler32.hasher.update_u32
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_bzip2__decoder__workbuf_len(
--    const wuffs_bzip2__decoder* self) {
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_adler32__hasher__update_u32(
-+    wuffs_adler32__hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-   if (!self) {
--    return wuffs_base__utility__empty_range_ii_u64();
-+    return 0;
-   }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_range_ii_u64();
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return 0;
-   }
- 
--  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
-+  wuffs_adler32__hasher__update(self, a_x);
-+  return self->private_impl.f_state;
- }
- 
--// -------- func bzip2.decoder.transform_io
-+// -------- func adler32.hasher.up
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_bzip2__decoder__transform_io(
--    wuffs_bzip2__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__slice_u8 a_workbuf) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--  if (!a_dst || !a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 1)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
--  }
--  self->private_impl.active_coroutine = 0;
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+static wuffs_base__empty_struct
-+wuffs_adler32__hasher__up(
-+    wuffs_adler32__hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-+  return (*self->private_impl.choosy_up)(self, a_x);
-+}
- 
--  uint32_t coro_susp_point = self->private_impl.p_transform_io[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_adler32__hasher__up__choosy_default(
-+    wuffs_adler32__hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-+  uint32_t v_s1 = 0;
-+  uint32_t v_s2 = 0;
-+  wuffs_base__slice_u8 v_remaining = {0};
-+  wuffs_base__slice_u8 v_p = {0};
- 
--    while (true) {
--      {
--        wuffs_base__status t_0 = wuffs_bzip2__decoder__do_transform_io(self, a_dst, a_src, a_workbuf);
--        v_status = t_0;
-+  v_s1 = ((self->private_impl.f_state) & 0xFFFFu);
-+  v_s2 = ((self->private_impl.f_state) >> (32u - 16u));
-+  while (((uint64_t)(a_x.len)) > 0u) {
-+    v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0u);
-+    if (((uint64_t)(a_x.len)) > 5552u) {
-+      v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 5552u);
-+      a_x = wuffs_base__slice_u8__subslice_j(a_x, 5552u);
-+    }
-+    {
-+      wuffs_base__slice_u8 i_slice_p = a_x;
-+      v_p.ptr = i_slice_p.ptr;
-+      v_p.len = 1;
-+      const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 8) * 8));
-+      while (v_p.ptr < i_end0_p) {
-+        v_s1 += ((uint32_t)(v_p.ptr[0u]));
-+        v_s2 += v_s1;
-+        v_p.ptr += 1;
-+        v_s1 += ((uint32_t)(v_p.ptr[0u]));
-+        v_s2 += v_s1;
-+        v_p.ptr += 1;
-+        v_s1 += ((uint32_t)(v_p.ptr[0u]));
-+        v_s2 += v_s1;
-+        v_p.ptr += 1;
-+        v_s1 += ((uint32_t)(v_p.ptr[0u]));
-+        v_s2 += v_s1;
-+        v_p.ptr += 1;
-+        v_s1 += ((uint32_t)(v_p.ptr[0u]));
-+        v_s2 += v_s1;
-+        v_p.ptr += 1;
-+        v_s1 += ((uint32_t)(v_p.ptr[0u]));
-+        v_s2 += v_s1;
-+        v_p.ptr += 1;
-+        v_s1 += ((uint32_t)(v_p.ptr[0u]));
-+        v_s2 += v_s1;
-+        v_p.ptr += 1;
-+        v_s1 += ((uint32_t)(v_p.ptr[0u]));
-+        v_s2 += v_s1;
-+        v_p.ptr += 1;
-       }
--      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_bzip2__error__truncated_input);
--        goto exit;
-+      v_p.len = 1;
-+      const uint8_t* i_end1_p = wuffs_private_impl__ptr_u8_plus_len(i_slice_p.ptr, i_slice_p.len);
-+      while (v_p.ptr < i_end1_p) {
-+        v_s1 += ((uint32_t)(v_p.ptr[0u]));
-+        v_s2 += v_s1;
-+        v_p.ptr += 1;
-       }
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+      v_p.len = 0;
-     }
--
--    ok:
--    self->private_impl.p_transform_io[0] = 0;
--    goto exit;
-+    v_s1 %= 65521u;
-+    v_s2 %= 65521u;
-+    a_x = v_remaining;
-   }
-+  self->private_impl.f_state = (((v_s2 & 65535u) << 16u) | (v_s1 & 65535u));
-+  return wuffs_base__make_empty_struct();
-+}
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
-+// -------- func adler32.hasher.checksum_u32
- 
--  goto exit;
--  exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_adler32__hasher__checksum_u32(
-+    const wuffs_adler32__hasher* self) {
-+  if (!self) {
-+    return 0;
-   }
--  return status;
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  return self->private_impl.f_state;
- }
- 
--// -------- func bzip2.decoder.do_transform_io
-+// ‼ WUFFS MULTI-FILE SECTION +arm_neon
-+// -------- func adler32.hasher.up_arm_neon
- 
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bzip2__decoder__do_transform_io(
--    wuffs_bzip2__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__slice_u8 a_workbuf) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  uint8_t v_c = 0;
--  uint32_t v_i = 0;
--  uint64_t v_tag = 0;
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
--  uint32_t v_final_checksum_want = 0;
--
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
-+static wuffs_base__empty_struct
-+wuffs_adler32__hasher__up_arm_neon(
-+    wuffs_adler32__hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-+  uint32_t v_s1 = 0;
-+  uint32_t v_s2 = 0;
-+  wuffs_base__slice_u8 v_remaining = {0};
-+  wuffs_base__slice_u8 v_p = {0};
-+  uint8x16_t v_p__left = {0};
-+  uint8x16_t v_p_right = {0};
-+  uint32x4_t v_v1 = {0};
-+  uint32x4_t v_v2 = {0};
-+  uint16x8_t v_col0 = {0};
-+  uint16x8_t v_col1 = {0};
-+  uint16x8_t v_col2 = {0};
-+  uint16x8_t v_col3 = {0};
-+  uint32x2_t v_sum1 = {0};
-+  uint32x2_t v_sum2 = {0};
-+  uint32x2_t v_sum12 = {0};
-+  uint32_t v_num_iterate_bytes = 0;
-+  uint64_t v_tail_index = 0;
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_transform_io[0];
--  if (coro_susp_point) {
--    v_i = self->private_data.s_do_transform_io[0].v_i;
--    v_tag = self->private_data.s_do_transform_io[0].v_tag;
--    v_final_checksum_want = self->private_data.s_do_transform_io[0].v_final_checksum_want;
-+  v_s1 = ((self->private_impl.f_state) & 0xFFFFu);
-+  v_s2 = ((self->private_impl.f_state) >> (32u - 16u));
-+  while ((((uint64_t)(a_x.len)) > 0u) && ((15u & ((uint32_t)(0xFFFu & (uintptr_t)(a_x.ptr)))) != 0u)) {
-+    v_s1 += ((uint32_t)(a_x.ptr[0u]));
-+    v_s2 += v_s1;
-+    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
-   }
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_0 = *iop_a_src++;
--      v_c = t_0;
--    }
--    if (v_c != 66u) {
--      status = wuffs_base__make_status(wuffs_bzip2__error__bad_header);
--      goto exit;
-+  v_s1 %= 65521u;
-+  v_s2 %= 65521u;
-+  while (((uint64_t)(a_x.len)) > 0u) {
-+    v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0u);
-+    if (((uint64_t)(a_x.len)) > 5536u) {
-+      v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 5536u);
-+      a_x = wuffs_base__slice_u8__subslice_j(a_x, 5536u);
-     }
-+    v_num_iterate_bytes = ((uint32_t)((((uint64_t)(a_x.len)) & 4294967264u)));
-+    v_s2 += ((uint32_t)(v_s1 * v_num_iterate_bytes));
-+    v_v1 = vdupq_n_u32(0u);
-+    v_v2 = vdupq_n_u32(0u);
-+    v_col0 = vdupq_n_u16(0u);
-+    v_col1 = vdupq_n_u16(0u);
-+    v_col2 = vdupq_n_u16(0u);
-+    v_col3 = vdupq_n_u16(0u);
-     {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
-+      wuffs_base__slice_u8 i_slice_p = a_x;
-+      v_p.ptr = i_slice_p.ptr;
-+      v_p.len = 32;
-+      const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32));
-+      while (v_p.ptr < i_end0_p) {
-+        v_p__left = vld1q_u8(v_p.ptr);
-+        v_p_right = vld1q_u8(v_p.ptr + 16u);
-+        v_v2 = vaddq_u32(v_v2, v_v1);
-+        v_v1 = vpadalq_u16(v_v1, vpadalq_u8(vpaddlq_u8(v_p__left), v_p_right));
-+        v_col0 = vaddw_u8(v_col0, vget_low_u8(v_p__left));
-+        v_col1 = vaddw_u8(v_col1, vget_high_u8(v_p__left));
-+        v_col2 = vaddw_u8(v_col2, vget_low_u8(v_p_right));
-+        v_col3 = vaddw_u8(v_col3, vget_high_u8(v_p_right));
-+        v_p.ptr += 32;
-       }
--      uint8_t t_1 = *iop_a_src++;
--      v_c = t_1;
--    }
--    if (v_c != 90u) {
--      status = wuffs_base__make_status(wuffs_bzip2__error__bad_header);
--      goto exit;
-+      v_p.len = 0;
-     }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
-+    v_v2 = vshlq_n_u32(v_v2, 5u);
-+    v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col0), ((uint16x4_t){32u, 31u, 30u, 29u}));
-+    v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col0), ((uint16x4_t){28u, 27u, 26u, 25u}));
-+    v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col1), ((uint16x4_t){24u, 23u, 22u, 21u}));
-+    v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col1), ((uint16x4_t){20u, 19u, 18u, 17u}));
-+    v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col2), ((uint16x4_t){16u, 15u, 14u, 13u}));
-+    v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col2), ((uint16x4_t){12u, 11u, 10u, 9u}));
-+    v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col3), ((uint16x4_t){8u, 7u, 6u, 5u}));
-+    v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col3), ((uint16x4_t){4u, 3u, 2u, 1u}));
-+    v_sum1 = vpadd_u32(vget_low_u32(v_v1), vget_high_u32(v_v1));
-+    v_sum2 = vpadd_u32(vget_low_u32(v_v2), vget_high_u32(v_v2));
-+    v_sum12 = vpadd_u32(v_sum1, v_sum2);
-+    v_s1 += vget_lane_u32(v_sum12, 0u);
-+    v_s2 += vget_lane_u32(v_sum12, 1u);
-+    v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551584u);
-+    if (v_tail_index < ((uint64_t)(a_x.len))) {
-+      {
-+        wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index);
-+        v_p.ptr = i_slice_p.ptr;
-+        v_p.len = 1;
-+        const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(i_slice_p.ptr, i_slice_p.len);
-+        while (v_p.ptr < i_end0_p) {
-+          v_s1 += ((uint32_t)(v_p.ptr[0u]));
-+          v_s2 += v_s1;
-+          v_p.ptr += 1;
-+        }
-+        v_p.len = 0;
-       }
--      uint8_t t_2 = *iop_a_src++;
--      v_c = t_2;
-     }
--    if (v_c != 104u) {
--      status = wuffs_base__make_status(wuffs_bzip2__error__bad_header);
--      goto exit;
-+    v_s1 %= 65521u;
-+    v_s2 %= 65521u;
-+    a_x = v_remaining;
-+  }
-+  self->private_impl.f_state = (((v_s2 & 65535u) << 16u) | (v_s1 & 65535u));
-+  return wuffs_base__make_empty_struct();
-+}
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
-+// ‼ WUFFS MULTI-FILE SECTION -arm_neon
-+
-+// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
-+// -------- func adler32.hasher.up_x86_sse42
-+
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_adler32__hasher__up_x86_sse42(
-+    wuffs_adler32__hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-+  uint32_t v_s1 = 0;
-+  uint32_t v_s2 = 0;
-+  wuffs_base__slice_u8 v_remaining = {0};
-+  wuffs_base__slice_u8 v_p = {0};
-+  __m128i v_zeroes = {0};
-+  __m128i v_ones = {0};
-+  __m128i v_weights__left = {0};
-+  __m128i v_weights_right = {0};
-+  __m128i v_q__left = {0};
-+  __m128i v_q_right = {0};
-+  __m128i v_v1 = {0};
-+  __m128i v_v2 = {0};
-+  __m128i v_v2j = {0};
-+  __m128i v_v2k = {0};
-+  uint32_t v_num_iterate_bytes = 0;
-+  uint64_t v_tail_index = 0;
-+
-+  v_zeroes = _mm_set1_epi16((int16_t)(0u));
-+  v_ones = _mm_set1_epi16((int16_t)(1u));
-+  v_weights__left = _mm_set_epi8((int8_t)(17u), (int8_t)(18u), (int8_t)(19u), (int8_t)(20u), (int8_t)(21u), (int8_t)(22u), (int8_t)(23u), (int8_t)(24u), (int8_t)(25u), (int8_t)(26u), (int8_t)(27u), (int8_t)(28u), (int8_t)(29u), (int8_t)(30u), (int8_t)(31u), (int8_t)(32u));
-+  v_weights_right = _mm_set_epi8((int8_t)(1u), (int8_t)(2u), (int8_t)(3u), (int8_t)(4u), (int8_t)(5u), (int8_t)(6u), (int8_t)(7u), (int8_t)(8u), (int8_t)(9u), (int8_t)(10u), (int8_t)(11u), (int8_t)(12u), (int8_t)(13u), (int8_t)(14u), (int8_t)(15u), (int8_t)(16u));
-+  v_s1 = ((self->private_impl.f_state) & 0xFFFFu);
-+  v_s2 = ((self->private_impl.f_state) >> (32u - 16u));
-+  while (((uint64_t)(a_x.len)) > 0u) {
-+    v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0u);
-+    if (((uint64_t)(a_x.len)) > 5536u) {
-+      v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 5536u);
-+      a_x = wuffs_base__slice_u8__subslice_j(a_x, 5536u);
-     }
-+    v_num_iterate_bytes = ((uint32_t)((((uint64_t)(a_x.len)) & 4294967264u)));
-+    v_s2 += ((uint32_t)(v_s1 * v_num_iterate_bytes));
-+    v_v1 = _mm_setzero_si128();
-+    v_v2j = _mm_setzero_si128();
-+    v_v2k = _mm_setzero_si128();
-     {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_3 = *iop_a_src++;
--      v_c = t_3;
--    }
--    if ((v_c < 49u) || (57u < v_c)) {
--      status = wuffs_base__make_status(wuffs_bzip2__error__bad_header);
--      goto exit;
--    }
--    self->private_impl.f_max_incl_block_size = (((uint32_t)((v_c - 48u))) * 100000u);
--    while (true) {
--      v_tag = 0u;
--      v_i = 0u;
--      while (v_i < 48u) {
--        if (self->private_impl.f_n_bits <= 0u) {
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint8_t t_4 = *iop_a_src++;
--            v_c = t_4;
--          }
--          self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
--          self->private_impl.f_n_bits = 8u;
--        }
--        v_tag <<= 1u;
--        v_tag |= ((uint64_t)((self->private_impl.f_bits >> 31u)));
--        self->private_impl.f_bits <<= 1u;
--        self->private_impl.f_n_bits -= 1u;
--        v_i += 1u;
--      }
--      if (v_tag == 25779555029136u) {
--        break;
--      } else if (v_tag != 54156738319193u) {
--        status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
--        goto exit;
--      }
--      if (a_src) {
--        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--      }
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--      status = wuffs_bzip2__decoder__prepare_block(self, a_src);
--      if (a_src) {
--        iop_a_src = a_src->data.ptr + a_src->meta.ri;
--      }
--      if (status.repr) {
--        goto suspend;
--      }
--      self->private_impl.f_block_size = 0u;
--      self->private_impl.f_decode_huffman_finished = false;
--      self->private_impl.f_decode_huffman_which = WUFFS_BZIP2__CLAMP_TO_5[(self->private_data.f_huffman_selectors[0u] & 7u)];
--      self->private_impl.f_decode_huffman_ticks = 50u;
--      self->private_impl.f_decode_huffman_section = 0u;
--      self->private_impl.f_decode_huffman_run_shift = 0u;
--      while ( ! self->private_impl.f_decode_huffman_finished) {
--        if (a_src) {
--          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--        }
--        v_status = wuffs_bzip2__decoder__decode_huffman_fast(self, a_src);
--        if (a_src) {
--          iop_a_src = a_src->data.ptr + a_src->meta.ri;
--        }
--        if (wuffs_base__status__is_error(&v_status)) {
--          status = v_status;
--          goto exit;
--        } else if (self->private_impl.f_decode_huffman_finished) {
--          break;
--        }
--        if (a_src) {
--          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--        }
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
--        status = wuffs_bzip2__decoder__decode_huffman_slow(self, a_src);
--        if (a_src) {
--          iop_a_src = a_src->data.ptr + a_src->meta.ri;
--        }
--        if (status.repr) {
--          goto suspend;
--        }
--      }
--      wuffs_bzip2__decoder__invert_bwt(self);
--      self->private_impl.f_block_checksum_have = 4294967295u;
--      if (self->private_impl.f_original_pointer >= self->private_impl.f_block_size) {
--        status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
--        goto exit;
--      }
--      self->private_impl.f_flush_pointer = (self->private_data.f_bwt[self->private_impl.f_original_pointer] >> 12u);
--      self->private_impl.f_flush_repeat_count = 0u;
--      self->private_impl.f_flush_prev = 0u;
--      while (self->private_impl.f_block_size > 0u) {
--        wuffs_bzip2__decoder__flush_fast(self, a_dst);
--        if (self->private_impl.f_block_size <= 0u) {
--          break;
--        }
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
--        status = wuffs_bzip2__decoder__flush_slow(self, a_dst);
--        if (status.repr) {
--          goto suspend;
--        }
--      }
--      self->private_impl.f_block_checksum_have ^= 4294967295u;
--      if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_block_checksum_have != self->private_impl.f_block_checksum_want)) {
--        status = wuffs_base__make_status(wuffs_bzip2__error__bad_checksum);
--        goto exit;
-+      wuffs_base__slice_u8 i_slice_p = a_x;
-+      v_p.ptr = i_slice_p.ptr;
-+      v_p.len = 32;
-+      const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32));
-+      while (v_p.ptr < i_end0_p) {
-+        v_q__left = _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr));
-+        v_q_right = _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 16u));
-+        v_v2j = _mm_add_epi32(v_v2j, v_v1);
-+        v_v1 = _mm_add_epi32(v_v1, _mm_sad_epu8(v_q__left, v_zeroes));
-+        v_v1 = _mm_add_epi32(v_v1, _mm_sad_epu8(v_q_right, v_zeroes));
-+        v_v2k = _mm_add_epi32(v_v2k, _mm_madd_epi16(v_ones, _mm_maddubs_epi16(v_q__left, v_weights__left)));
-+        v_v2k = _mm_add_epi32(v_v2k, _mm_madd_epi16(v_ones, _mm_maddubs_epi16(v_q_right, v_weights_right)));
-+        v_p.ptr += 32;
-       }
--      self->private_impl.f_final_checksum_have = (self->private_impl.f_block_checksum_have ^ ((self->private_impl.f_final_checksum_have >> 31u) | ((uint32_t)(self->private_impl.f_final_checksum_have << 1u))));
-+      v_p.len = 0;
-     }
--    v_final_checksum_want = 0u;
--    v_i = 0u;
--    while (v_i < 32u) {
--      if (self->private_impl.f_n_bits <= 0u) {
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint8_t t_5 = *iop_a_src++;
--          v_c = t_5;
-+    v_v1 = _mm_add_epi32(v_v1, _mm_shuffle_epi32(v_v1, (int32_t)(177u)));
-+    v_v1 = _mm_add_epi32(v_v1, _mm_shuffle_epi32(v_v1, (int32_t)(78u)));
-+    v_s1 += ((uint32_t)(_mm_cvtsi128_si32(v_v1)));
-+    v_v2 = _mm_add_epi32(v_v2k, _mm_slli_epi32(v_v2j, (int32_t)(5u)));
-+    v_v2 = _mm_add_epi32(v_v2, _mm_shuffle_epi32(v_v2, (int32_t)(177u)));
-+    v_v2 = _mm_add_epi32(v_v2, _mm_shuffle_epi32(v_v2, (int32_t)(78u)));
-+    v_s2 += ((uint32_t)(_mm_cvtsi128_si32(v_v2)));
-+    v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551584u);
-+    if (v_tail_index < ((uint64_t)(a_x.len))) {
-+      {
-+        wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index);
-+        v_p.ptr = i_slice_p.ptr;
-+        v_p.len = 1;
-+        const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(i_slice_p.ptr, i_slice_p.len);
-+        while (v_p.ptr < i_end0_p) {
-+          v_s1 += ((uint32_t)(v_p.ptr[0u]));
-+          v_s2 += v_s1;
-+          v_p.ptr += 1;
-         }
--        self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
--        self->private_impl.f_n_bits = 8u;
-+        v_p.len = 0;
-       }
--      v_final_checksum_want <<= 1u;
--      v_final_checksum_want |= (self->private_impl.f_bits >> 31u);
--      self->private_impl.f_bits <<= 1u;
--      self->private_impl.f_n_bits -= 1u;
--      v_i += 1u;
-     }
--    if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_final_checksum_have != v_final_checksum_want)) {
--      status = wuffs_base__make_status(wuffs_bzip2__error__bad_checksum);
--      goto exit;
--    }
--
--    goto ok;
--    ok:
--    self->private_impl.p_do_transform_io[0] = 0;
--    goto exit;
-+    v_s1 %= 65521u;
-+    v_s2 %= 65521u;
-+    a_x = v_remaining;
-   }
-+  self->private_impl.f_state = (((v_s2 & 65535u) << 16u) | (v_s1 & 65535u));
-+  return wuffs_base__make_empty_struct();
-+}
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_do_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_do_transform_io[0].v_i = v_i;
--  self->private_data.s_do_transform_io[0].v_tag = v_tag;
--  self->private_data.s_do_transform_io[0].v_final_checksum_want = v_final_checksum_want;
--
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ADLER32)
- 
--  return status;
--}
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BMP)
- 
--// -------- func bzip2.decoder.prepare_block
-+// ---------------- Status Codes Implementations
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bzip2__decoder__prepare_block(
--    wuffs_bzip2__decoder* self,
-+const char wuffs_bmp__error__bad_header[] = "#bmp: bad header";
-+const char wuffs_bmp__error__bad_rle_compression[] = "#bmp: bad RLE compression";
-+const char wuffs_bmp__error__truncated_input[] = "#bmp: truncated input";
-+const char wuffs_bmp__error__unsupported_bmp_file[] = "#bmp: unsupported BMP file";
-+const char wuffs_bmp__note__internal_note_short_read[] = "@bmp: internal note: short read";
-+
-+// ---------------- Private Consts
-+
-+#define WUFFS_BMP__COMPRESSION_NONE 0u
-+
-+#define WUFFS_BMP__COMPRESSION_RLE8 1u
-+
-+#define WUFFS_BMP__COMPRESSION_RLE4 2u
-+
-+#define WUFFS_BMP__COMPRESSION_BITFIELDS 3u
-+
-+#define WUFFS_BMP__COMPRESSION_JPEG 4u
-+
-+#define WUFFS_BMP__COMPRESSION_PNG 5u
-+
-+#define WUFFS_BMP__COMPRESSION_ALPHABITFIELDS 6u
-+
-+#define WUFFS_BMP__COMPRESSION_LOW_BIT_DEPTH 256u
-+
-+#define WUFFS_BMP__RLE_STATE_NEUTRAL 0u
-+
-+#define WUFFS_BMP__RLE_STATE_RUN 1u
-+
-+#define WUFFS_BMP__RLE_STATE_ESCAPE 2u
-+
-+#define WUFFS_BMP__RLE_STATE_LITERAL 3u
-+
-+#define WUFFS_BMP__RLE_STATE_DELTA_X 4u
-+
-+#define WUFFS_BMP__RLE_STATE_DELTA_Y 5u
-+
-+// ---------------- Private Initializer Prototypes
-+
-+// ---------------- Private Function Prototypes
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_bmp__decoder__do_decode_image_config(
-+    wuffs_bmp__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_bmp__decoder__do_decode_frame_config(
-+    wuffs_bmp__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_bmp__decoder__do_decode_frame(
-+    wuffs_bmp__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_bmp__decoder__swizzle_none(
-+    wuffs_bmp__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_bmp__decoder__swizzle_rle(
-+    wuffs_bmp__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_bmp__decoder__swizzle_bitfields(
-+    wuffs_bmp__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_bmp__decoder__swizzle_low_bit_depth(
-+    wuffs_bmp__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_bmp__decoder__do_tell_me_more(
-+    wuffs_bmp__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__more_information* a_minfo,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_bmp__decoder__read_palette(
-+    wuffs_bmp__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_bmp__decoder__process_masks(
-+    wuffs_bmp__decoder* self);
-+
-+// ---------------- VTables
-+
-+const wuffs_base__image_decoder__func_ptrs
-+wuffs_bmp__decoder__func_ptrs_for__wuffs_base__image_decoder = {
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__pixel_buffer*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__pixel_blend,
-+      wuffs_base__slice_u8,
-+      wuffs_base__decode_frame_options*))(&wuffs_bmp__decoder__decode_frame),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__frame_config*,
-+      wuffs_base__io_buffer*))(&wuffs_bmp__decoder__decode_frame_config),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__image_config*,
-+      wuffs_base__io_buffer*))(&wuffs_bmp__decoder__decode_image_config),
-+  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_bmp__decoder__frame_dirty_rect),
-+  (uint64_t(*)(const void*,
-+      uint32_t))(&wuffs_bmp__decoder__get_quirk),
-+  (uint32_t(*)(const void*))(&wuffs_bmp__decoder__num_animation_loops),
-+  (uint64_t(*)(const void*))(&wuffs_bmp__decoder__num_decoded_frame_configs),
-+  (uint64_t(*)(const void*))(&wuffs_bmp__decoder__num_decoded_frames),
-+  (wuffs_base__status(*)(void*,
-+      uint64_t,
-+      uint64_t))(&wuffs_bmp__decoder__restart_frame),
-+  (wuffs_base__status(*)(void*,
-+      uint32_t,
-+      uint64_t))(&wuffs_bmp__decoder__set_quirk),
-+  (wuffs_base__empty_struct(*)(void*,
-+      uint32_t,
-+      bool))(&wuffs_bmp__decoder__set_report_metadata),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__more_information*,
-+      wuffs_base__io_buffer*))(&wuffs_bmp__decoder__tell_me_more),
-+  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_bmp__decoder__workbuf_len),
-+};
-+
-+// ---------------- Initializer Implementations
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_bmp__decoder__initialize(
-+    wuffs_bmp__decoder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options){
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (sizeof(*self) != sizeof_star_self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  }
-+  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
-+      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+  }
-+
-+  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
-+    // The whole point of this if-check is to detect an uninitialized *self.
-+    // We disable the warning on GCC. Clang-5.0 does not have this warning.
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+#endif
-+    if (self->private_impl.magic != 0) {
-+      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+    }
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+  } else {
-+    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
-+      memset(self, 0, sizeof(*self));
-+      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-+    } else {
-+      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+    }
-+  }
-+
-+  self->private_impl.magic = WUFFS_BASE__MAGIC;
-+  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
-+      wuffs_base__image_decoder__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
-+      (const void*)(&wuffs_bmp__decoder__func_ptrs_for__wuffs_base__image_decoder);
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+wuffs_bmp__decoder*
-+wuffs_bmp__decoder__alloc(void) {
-+  wuffs_bmp__decoder* x =
-+      (wuffs_bmp__decoder*)(calloc(1, sizeof(wuffs_bmp__decoder)));
-+  if (!x) {
-+    return NULL;
-+  }
-+  if (wuffs_bmp__decoder__initialize(
-+      x, sizeof(wuffs_bmp__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+    free(x);
-+    return NULL;
-+  }
-+  return x;
-+}
-+
-+size_t
-+sizeof__wuffs_bmp__decoder(void) {
-+  return sizeof(wuffs_bmp__decoder);
-+}
-+
-+// ---------------- Function Implementations
-+
-+// -------- func bmp.decoder.get_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_bmp__decoder__get_quirk(
-+    const wuffs_bmp__decoder* self,
-+    uint32_t a_key) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  return 0u;
-+}
-+
-+// -------- func bmp.decoder.set_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_bmp__decoder__set_quirk(
-+    wuffs_bmp__decoder* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+
-+  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+}
-+
-+// -------- func bmp.decoder.decode_image_config
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_bmp__decoder__decode_image_config(
-+    wuffs_bmp__decoder* self,
-+    wuffs_base__image_config* a_dst,
-     wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 1)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint8_t v_c = 0;
--  uint32_t v_i = 0;
--  uint32_t v_j = 0;
--  uint32_t v_selector = 0;
--  uint32_t v_sel_ff = 0;
--  uint8_t v_movee = 0;
-   wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
-+  uint32_t coro_susp_point = self->private_impl.p_decode_image_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_bmp__decoder__do_decode_image_config(self, a_dst, a_src);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_bmp__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+
-+    ok:
-+    self->private_impl.p_decode_image_config = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func bmp.decoder.do_decode_image_config
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_bmp__decoder__do_decode_image_config(
-+    wuffs_bmp__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint32_t v_magic = 0;
-+  uint32_t v_width = 0;
-+  uint32_t v_height = 0;
-+  uint32_t v_planes = 0;
-+  uint32_t v_n = 0;
-+  uint32_t v_dst_pixfmt = 0;
-+  uint32_t v_byte_width = 0;
-+
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -30999,797 +31613,1141 @@ wuffs_bzip2__decoder__prepare_block(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_prepare_block[0];
--  if (coro_susp_point) {
--    v_i = self->private_data.s_prepare_block[0].v_i;
--    v_selector = self->private_data.s_prepare_block[0].v_selector;
--  }
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    self->private_impl.f_block_checksum_want = 0u;
--    v_i = 0u;
--    while (v_i < 32u) {
--      if (self->private_impl.f_n_bits <= 0u) {
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+    if ((self->private_impl.f_call_sequence != 0u) || (self->private_impl.f_io_redirect_fourcc == 1u)) {
-+      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+      goto exit;
-+    } else if (self->private_impl.f_io_redirect_fourcc != 0u) {
-+      status = wuffs_base__make_status(wuffs_base__note__i_o_redirect);
-+      goto ok;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      uint32_t t_0;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+        t_0 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-+        iop_a_src += 2;
-+      } else {
-+        self->private_data.s_do_decode_image_config.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+        while (true) {
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint8_t t_0 = *iop_a_src++;
--          v_c = t_0;
--        }
--        self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
--        self->private_impl.f_n_bits = 8u;
--      }
--      self->private_impl.f_block_checksum_want <<= 1u;
--      self->private_impl.f_block_checksum_want |= (self->private_impl.f_bits >> 31u);
--      self->private_impl.f_bits <<= 1u;
--      self->private_impl.f_n_bits -= 1u;
--      v_i += 1u;
--    }
--    if (self->private_impl.f_n_bits <= 0u) {
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
-+          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
-+          *scratch <<= 8;
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
-+          if (num_bits_0 == 8) {
-+            t_0 = ((uint32_t)(*scratch));
-+            break;
-+          }
-+          num_bits_0 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_0)) << 56;
-         }
--        uint8_t t_1 = *iop_a_src++;
--        v_c = t_1;
-       }
--      self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
--      self->private_impl.f_n_bits = 8u;
-+      v_magic = t_0;
-     }
--    if ((self->private_impl.f_bits >> 31u) != 0u) {
--      status = wuffs_base__make_status(wuffs_bzip2__error__unsupported_block_randomization);
-+    if (v_magic != 19778u) {
-+      status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
-       goto exit;
-     }
--    self->private_impl.f_bits <<= 1u;
--    self->private_impl.f_n_bits -= 1u;
--    self->private_impl.f_original_pointer = 0u;
--    v_i = 0u;
--    while (v_i < 24u) {
--      if (self->private_impl.f_n_bits <= 0u) {
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+    self->private_data.s_do_decode_image_config.scratch = 8u;
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+    if (self->private_data.s_do_decode_image_config.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+      self->private_data.s_do_decode_image_config.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+      iop_a_src = io2_a_src;
-+      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+      goto suspend;
-+    }
-+    iop_a_src += self->private_data.s_do_decode_image_config.scratch;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+      uint32_t t_1;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_do_decode_image_config.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+        while (true) {
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint8_t t_2 = *iop_a_src++;
--          v_c = t_2;
-+          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
-+          *scratch <<= 8;
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
-+          if (num_bits_1 == 24) {
-+            t_1 = ((uint32_t)(*scratch));
-+            break;
-+          }
-+          num_bits_1 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_1)) << 56;
-         }
--        self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
--        self->private_impl.f_n_bits = 8u;
-       }
--      self->private_impl.f_original_pointer <<= 1u;
--      self->private_impl.f_original_pointer |= (self->private_impl.f_bits >> 31u);
--      self->private_impl.f_bits <<= 1u;
--      self->private_impl.f_n_bits -= 1u;
--      v_i += 1u;
-+      self->private_impl.f_padding = t_1;
-     }
--    v_i = 0u;
--    while (v_i < 256u) {
--      self->private_data.f_presence[v_i] = 0u;
--      v_i += 1u;
-+    if (self->private_impl.f_padding < 14u) {
-+      status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
-+      goto exit;
-     }
--    v_i = 0u;
--    while (v_i < 256u) {
--      if (self->private_impl.f_n_bits <= 0u) {
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+    self->private_impl.f_padding -= 14u;
-+    self->private_impl.f_io_redirect_pos = wuffs_base__u64__sat_add(((uint64_t)(self->private_impl.f_padding)), wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))));
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+      uint32_t t_2;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_do_decode_image_config.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+        while (true) {
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint8_t t_3 = *iop_a_src++;
--          v_c = t_3;
-+          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+          uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
-+          *scratch <<= 8;
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
-+          if (num_bits_2 == 24) {
-+            t_2 = ((uint32_t)(*scratch));
-+            break;
-+          }
-+          num_bits_2 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_2)) << 56;
-         }
--        self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
--        self->private_impl.f_n_bits = 8u;
--      }
--      if ((self->private_impl.f_bits >> 31u) != 0u) {
--        self->private_data.f_presence[v_i] = 1u;
-       }
--      self->private_impl.f_bits <<= 1u;
--      self->private_impl.f_n_bits -= 1u;
--      v_i += 16u;
-+      self->private_impl.f_bitmap_info_len = t_2;
-     }
--    self->private_data.f_scratch = 0u;
--    v_i = 0u;
--    while (v_i < 256u) {
--      if (self->private_data.f_presence[v_i] == 0u) {
--        v_i += 16u;
--        continue;
--      }
--      while (true) {
--        if (self->private_impl.f_n_bits <= 0u) {
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+    if (self->private_impl.f_padding < self->private_impl.f_bitmap_info_len) {
-+      status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
-+      goto exit;
-+    }
-+    self->private_impl.f_padding -= self->private_impl.f_bitmap_info_len;
-+    if (self->private_impl.f_bitmap_info_len == 12u) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+        uint32_t t_3;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+          t_3 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-+          iop_a_src += 2;
-+        } else {
-+          self->private_data.s_do_decode_image_config.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+          while (true) {
-             if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-               status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-               goto suspend;
-             }
--            uint8_t t_4 = *iop_a_src++;
--            v_c = t_4;
-+            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+            uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
-+            if (num_bits_3 == 8) {
-+              t_3 = ((uint32_t)(*scratch));
-+              break;
-+            }
-+            num_bits_3 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_3)) << 56;
-           }
--          self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
--          self->private_impl.f_n_bits = 8u;
--        }
--        self->private_data.f_scratch += (self->private_impl.f_bits >> 31u);
--        self->private_data.f_presence[(v_i & 255u)] = ((uint8_t)((self->private_impl.f_bits >> 31u)));
--        self->private_impl.f_bits <<= 1u;
--        self->private_impl.f_n_bits -= 1u;
--        v_i += 1u;
--        if ((v_i & 15u) == 0u) {
--          break;
-         }
-+        self->private_impl.f_width = t_3;
-       }
--    }
--    if ((self->private_data.f_scratch < 1u) || (256u < self->private_data.f_scratch)) {
--      status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
--      goto exit;
--    }
--    self->private_impl.f_num_symbols = (self->private_data.f_scratch + 2u);
--    self->private_data.f_scratch = 0u;
--    v_i = 0u;
--    while (v_i < 3u) {
--      if (self->private_impl.f_n_bits <= 0u) {
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
-+        uint32_t t_4;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+          t_4 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-+          iop_a_src += 2;
-+        } else {
-+          self->private_data.s_do_decode_image_config.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+            uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
-+            if (num_bits_4 == 8) {
-+              t_4 = ((uint32_t)(*scratch));
-+              break;
-+            }
-+            num_bits_4 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_4)) << 56;
-           }
--          uint8_t t_5 = *iop_a_src++;
--          v_c = t_5;
-         }
--        self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
--        self->private_impl.f_n_bits = 8u;
-+        self->private_impl.f_height = t_4;
-       }
--      self->private_data.f_scratch <<= 1u;
--      self->private_data.f_scratch |= (self->private_impl.f_bits >> 31u);
--      self->private_impl.f_bits <<= 1u;
--      self->private_impl.f_n_bits -= 1u;
--      v_i += 1u;
--    }
--    if ((self->private_data.f_scratch < 2u) || (6u < self->private_data.f_scratch)) {
--      status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
--      goto exit;
--    }
--    self->private_impl.f_num_huffman_codes = self->private_data.f_scratch;
--    self->private_data.f_scratch = 0u;
--    v_i = 0u;
--    while (v_i < 15u) {
--      if (self->private_impl.f_n_bits <= 0u) {
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
-+        uint32_t t_5;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+          t_5 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-+          iop_a_src += 2;
-+        } else {
-+          self->private_data.s_do_decode_image_config.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+            uint32_t num_bits_5 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_5;
-+            if (num_bits_5 == 8) {
-+              t_5 = ((uint32_t)(*scratch));
-+              break;
-+            }
-+            num_bits_5 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_5)) << 56;
-           }
--          uint8_t t_6 = *iop_a_src++;
--          v_c = t_6;
-         }
--        self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
--        self->private_impl.f_n_bits = 8u;
-+        v_planes = t_5;
-       }
--      self->private_data.f_scratch <<= 1u;
--      self->private_data.f_scratch |= (self->private_impl.f_bits >> 31u);
--      self->private_impl.f_bits <<= 1u;
--      self->private_impl.f_n_bits -= 1u;
--      v_i += 1u;
--    }
--    if ((self->private_data.f_scratch < 1u) || (18001u < self->private_data.f_scratch)) {
--      status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
--      goto exit;
--    }
--    self->private_impl.f_num_sections = self->private_data.f_scratch;
--    v_i = 0u;
--    while (v_i < self->private_impl.f_num_huffman_codes) {
--      self->private_data.f_mtft[v_i] = ((uint8_t)(v_i));
--      v_i += 1u;
--    }
--    v_i = 0u;
--    while (v_i < self->private_impl.f_num_sections) {
--      v_selector = 0u;
--      while (true) {
--        if (self->private_impl.f_n_bits <= 0u) {
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+      if (v_planes != 1u) {
-+        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
-+        goto exit;
-+      }
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
-+        uint32_t t_6;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+          t_6 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-+          iop_a_src += 2;
-+        } else {
-+          self->private_data.s_do_decode_image_config.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
-+          while (true) {
-             if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-               status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-               goto suspend;
-             }
--            uint8_t t_7 = *iop_a_src++;
--            v_c = t_7;
-+            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+            uint32_t num_bits_6 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_6;
-+            if (num_bits_6 == 8) {
-+              t_6 = ((uint32_t)(*scratch));
-+              break;
-+            }
-+            num_bits_6 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_6)) << 56;
-           }
--          self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
--          self->private_impl.f_n_bits = 8u;
--        }
--        if ((self->private_impl.f_bits >> 31u) == 0u) {
--          self->private_impl.f_bits <<= 1u;
--          self->private_impl.f_n_bits -= 1u;
--          break;
-         }
--        self->private_impl.f_bits <<= 1u;
--        self->private_impl.f_n_bits -= 1u;
--        v_selector += 1u;
--        if (v_selector >= self->private_impl.f_num_huffman_codes) {
--          status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
--          goto exit;
-+        self->private_impl.f_bits_per_pixel = t_6;
-+      }
-+    } else if (self->private_impl.f_bitmap_info_len == 16u) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
-+        uint32_t t_7;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+          t_7 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+          iop_a_src += 4;
-+        } else {
-+          self->private_data.s_do_decode_image_config.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(17);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+            uint32_t num_bits_7 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_7;
-+            if (num_bits_7 == 24) {
-+              t_7 = ((uint32_t)(*scratch));
-+              break;
-+            }
-+            num_bits_7 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_7)) << 56;
-+          }
-         }
-+        v_width = t_7;
-       }
--      if (v_selector == 0u) {
--        self->private_data.f_huffman_selectors[v_i] = self->private_data.f_mtft[0u];
--      } else {
--        v_sel_ff = (v_selector & 255u);
--        v_movee = self->private_data.f_mtft[v_sel_ff];
--        wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_mtft, 1, (1u + v_sel_ff)), wuffs_base__make_slice_u8(self->private_data.f_mtft, v_sel_ff));
--        self->private_data.f_mtft[0u] = v_movee;
--        self->private_data.f_huffman_selectors[v_i] = v_movee;
-+      if (v_width > 2147483647u) {
-+        status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
-+        goto exit;
-+      } else if (v_width > 16777215u) {
-+        status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
-+        goto exit;
-       }
--      v_i += 1u;
--    }
--    v_i = 0u;
--    while (v_i < self->private_impl.f_num_huffman_codes) {
--      if (a_src) {
--        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      self->private_impl.f_width = v_width;
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(18);
-+        uint32_t t_8;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+          t_8 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+          iop_a_src += 4;
-+        } else {
-+          self->private_data.s_do_decode_image_config.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(19);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+            uint32_t num_bits_8 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_8;
-+            if (num_bits_8 == 24) {
-+              t_8 = ((uint32_t)(*scratch));
-+              break;
-+            }
-+            num_bits_8 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_8)) << 56;
-+          }
-+        }
-+        v_height = t_8;
-       }
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
--      status = wuffs_bzip2__decoder__read_code_lengths(self, a_src);
--      if (a_src) {
--        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      if (v_height > 2147483647u) {
-+        status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
-+        goto exit;
-+      } else if (v_height > 16777215u) {
-+        status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
-+        goto exit;
-       }
--      if (status.repr) {
--        goto suspend;
-+      self->private_impl.f_height = v_height;
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(20);
-+        uint32_t t_9;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+          t_9 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-+          iop_a_src += 2;
-+        } else {
-+          self->private_data.s_do_decode_image_config.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(21);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+            uint32_t num_bits_9 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_9;
-+            if (num_bits_9 == 8) {
-+              t_9 = ((uint32_t)(*scratch));
-+              break;
-+            }
-+            num_bits_9 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_9)) << 56;
-+          }
-+        }
-+        v_planes = t_9;
-       }
--      v_status = wuffs_bzip2__decoder__build_huffman_tree(self, v_i);
--      if (wuffs_base__status__is_error(&v_status)) {
--        status = v_status;
-+      if (v_planes != 1u) {
-+        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
-         goto exit;
-       }
--      wuffs_bzip2__decoder__build_huffman_table(self, v_i);
--      v_i += 1u;
--    }
--    v_i = 0u;
--    v_j = 0u;
--    while (v_i < 256u) {
--      if (self->private_data.f_presence[v_i] != 0u) {
--        self->private_data.f_mtft[(v_j & 255u)] = ((uint8_t)(v_i));
--        v_j += 1u;
--      }
--      v_i += 1u;
--    }
--    v_i = 0u;
--    while (v_i < 256u) {
--      self->private_data.f_letter_counts[v_i] = 0u;
--      v_i += 1u;
--    }
--
--    goto ok;
--    ok:
--    self->private_impl.p_prepare_block[0] = 0;
--    goto exit;
--  }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_prepare_block[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_prepare_block[0].v_i = v_i;
--  self->private_data.s_prepare_block[0].v_selector = v_selector;
--
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
--
--  return status;
--}
--
--// -------- func bzip2.decoder.read_code_lengths
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bzip2__decoder__read_code_lengths(
--    wuffs_bzip2__decoder* self,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  uint8_t v_c = 0;
--  uint32_t v_i = 0;
--  uint32_t v_code_length = 0;
--
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
--
--  uint32_t coro_susp_point = self->private_impl.p_read_code_lengths[0];
--  if (coro_susp_point) {
--    v_i = self->private_data.s_read_code_lengths[0].v_i;
--    v_code_length = self->private_data.s_read_code_lengths[0].v_code_length;
--  }
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    self->private_impl.f_code_lengths_bitmask = 0u;
--    v_i = 0u;
--    while (v_i < 5u) {
--      if (self->private_impl.f_n_bits <= 0u) {
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22);
-+        uint32_t t_10;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+          t_10 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-+          iop_a_src += 2;
-+        } else {
-+          self->private_data.s_do_decode_image_config.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(23);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+            uint32_t num_bits_10 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_10;
-+            if (num_bits_10 == 8) {
-+              t_10 = ((uint32_t)(*scratch));
-+              break;
-+            }
-+            num_bits_10 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_10)) << 56;
-           }
--          uint8_t t_0 = *iop_a_src++;
--          v_c = t_0;
-         }
--        self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
--        self->private_impl.f_n_bits = 8u;
-+        self->private_impl.f_bits_per_pixel = t_10;
-       }
--      v_code_length <<= 1u;
--      v_code_length |= (self->private_impl.f_bits >> 31u);
--      self->private_impl.f_bits <<= 1u;
--      self->private_impl.f_n_bits -= 1u;
--      v_i += 1u;
--    }
--    v_i = 0u;
--    while (v_i < self->private_impl.f_num_symbols) {
--      while (true) {
--        if ((v_code_length < 1u) || (20u < v_code_length)) {
--          status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
--          goto exit;
--        }
--        if (self->private_impl.f_n_bits <= 0u) {
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+    } else {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(24);
-+        uint32_t t_11;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+          t_11 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+          iop_a_src += 4;
-+        } else {
-+          self->private_data.s_do_decode_image_config.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(25);
-+          while (true) {
-             if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-               status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-               goto suspend;
-             }
--            uint8_t t_1 = *iop_a_src++;
--            v_c = t_1;
-+            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+            uint32_t num_bits_11 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_11;
-+            if (num_bits_11 == 24) {
-+              t_11 = ((uint32_t)(*scratch));
-+              break;
-+            }
-+            num_bits_11 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_11)) << 56;
-           }
--          self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
--          self->private_impl.f_n_bits = 8u;
-         }
--        if ((self->private_impl.f_bits >> 31u) == 0u) {
--          self->private_impl.f_bits <<= 1u;
--          self->private_impl.f_n_bits -= 1u;
--          break;
--        }
--        self->private_impl.f_bits <<= 1u;
--        self->private_impl.f_n_bits -= 1u;
--        if (self->private_impl.f_n_bits <= 0u) {
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+        v_width = t_11;
-+      }
-+      if (v_width > 2147483647u) {
-+        status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
-+        goto exit;
-+      } else if (v_width > 16777215u) {
-+        status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
-+        goto exit;
-+      }
-+      self->private_impl.f_width = v_width;
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(26);
-+        uint32_t t_12;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+          t_12 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+          iop_a_src += 4;
-+        } else {
-+          self->private_data.s_do_decode_image_config.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(27);
-+          while (true) {
-             if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-               status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-               goto suspend;
-             }
--            uint8_t t_2 = *iop_a_src++;
--            v_c = t_2;
-+            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+            uint32_t num_bits_12 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_12;
-+            if (num_bits_12 == 24) {
-+              t_12 = ((uint32_t)(*scratch));
-+              break;
-+            }
-+            num_bits_12 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_12)) << 56;
-           }
--          self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
--          self->private_impl.f_n_bits = 8u;
-         }
--        if ((self->private_impl.f_bits >> 31u) == 0u) {
--          v_code_length += 1u;
-+        v_height = t_12;
-+      }
-+      if (v_height == 2147483648u) {
-+        status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
-+        goto exit;
-+      } else if (v_height > 2147483648u) {
-+        v_height = ((uint32_t)(0u - v_height));
-+        if (v_height > 16777215u) {
-+          status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
-+          goto exit;
-+        }
-+        self->private_impl.f_height = v_height;
-+        self->private_impl.f_top_down = true;
-+      } else if (v_height > 16777215u) {
-+        status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
-+        goto exit;
-+      } else {
-+        self->private_impl.f_height = v_height;
-+      }
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(28);
-+        uint32_t t_13;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+          t_13 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-+          iop_a_src += 2;
-         } else {
--          v_code_length -= 1u;
-+          self->private_data.s_do_decode_image_config.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(29);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+            uint32_t num_bits_13 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_13;
-+            if (num_bits_13 == 8) {
-+              t_13 = ((uint32_t)(*scratch));
-+              break;
-+            }
-+            num_bits_13 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_13)) << 56;
-+          }
-         }
--        self->private_impl.f_bits <<= 1u;
--        self->private_impl.f_n_bits -= 1u;
-+        v_planes = t_13;
-       }
--      self->private_impl.f_code_lengths_bitmask |= (((uint32_t)(1u)) << (v_code_length & 31u));
--      self->private_data.f_bwt[v_i] = v_code_length;
--      v_i += 1u;
--    }
--
--    goto ok;
--    ok:
--    self->private_impl.p_read_code_lengths[0] = 0;
--    goto exit;
--  }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_read_code_lengths[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_read_code_lengths[0].v_i = v_i;
--  self->private_data.s_read_code_lengths[0].v_code_length = v_code_length;
--
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
--
--  return status;
--}
--
--// -------- func bzip2.decoder.build_huffman_tree
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bzip2__decoder__build_huffman_tree(
--    wuffs_bzip2__decoder* self,
--    uint32_t a_which) {
--  uint32_t v_code_length = 0;
--  uint32_t v_symbol_index = 0;
--  uint32_t v_num_branch_nodes = 0;
--  uint32_t v_stack_height = 0;
--  uint32_t v_stack_values[21] = {0};
--  uint32_t v_node_index = 0;
--  uint16_t v_leaf_value = 0;
--
--  self->private_data.f_huffman_trees[a_which][0u][0u] = 0u;
--  self->private_data.f_huffman_trees[a_which][0u][1u] = 0u;
--  v_num_branch_nodes = 1u;
--  v_stack_height = 1u;
--  v_stack_values[0u] = 0u;
--  v_code_length = 1u;
--  while (v_code_length <= 20u) {
--    if ((self->private_impl.f_code_lengths_bitmask & (((uint32_t)(1u)) << v_code_length)) == 0u) {
--      v_code_length += 1u;
--      continue;
--    }
--    v_symbol_index = 0u;
--    while (v_symbol_index < self->private_impl.f_num_symbols) {
--      if (self->private_data.f_bwt[v_symbol_index] != v_code_length) {
--        v_symbol_index += 1u;
--        continue;
-+      if (v_planes != 1u) {
-+        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
-+        goto exit;
-       }
--      while (true) {
--        if (v_stack_height <= 0u) {
--          return wuffs_base__make_status(wuffs_bzip2__error__bad_huffman_code_over_subscribed);
--        } else if (v_stack_height >= v_code_length) {
--          break;
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(30);
-+        uint32_t t_14;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+          t_14 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-+          iop_a_src += 2;
-+        } else {
-+          self->private_data.s_do_decode_image_config.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(31);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+            uint32_t num_bits_14 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_14;
-+            if (num_bits_14 == 8) {
-+              t_14 = ((uint32_t)(*scratch));
-+              break;
-+            }
-+            num_bits_14 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_14)) << 56;
-+          }
-         }
--        v_node_index = v_stack_values[(v_stack_height - 1u)];
--        if (self->private_data.f_huffman_trees[a_which][v_node_index][0u] == 0u) {
--          self->private_data.f_huffman_trees[a_which][v_node_index][0u] = ((uint16_t)(v_num_branch_nodes));
-+        self->private_impl.f_bits_per_pixel = t_14;
-+      }
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(32);
-+        uint32_t t_15;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+          t_15 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+          iop_a_src += 4;
-         } else {
--          self->private_data.f_huffman_trees[a_which][v_node_index][1u] = ((uint16_t)(v_num_branch_nodes));
-+          self->private_data.s_do_decode_image_config.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(33);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+            uint32_t num_bits_15 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_15;
-+            if (num_bits_15 == 24) {
-+              t_15 = ((uint32_t)(*scratch));
-+              break;
-+            }
-+            num_bits_15 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_15)) << 56;
-+          }
-         }
--        if (v_num_branch_nodes >= 257u) {
--          return wuffs_base__make_status(wuffs_bzip2__error__bad_huffman_code_under_subscribed);
-+        self->private_impl.f_compression = t_15;
-+      }
-+      if (self->private_impl.f_bits_per_pixel == 0u) {
-+        if (self->private_impl.f_compression == 4u) {
-+          self->private_impl.f_io_redirect_fourcc = 1246774599u;
-+          status = wuffs_base__make_status(wuffs_base__note__i_o_redirect);
-+          goto ok;
-+        } else if (self->private_impl.f_compression == 5u) {
-+          self->private_impl.f_io_redirect_fourcc = 1347307296u;
-+          status = wuffs_base__make_status(wuffs_base__note__i_o_redirect);
-+          goto ok;
-         }
--        v_stack_values[v_stack_height] = v_num_branch_nodes;
--        self->private_data.f_huffman_trees[a_which][v_num_branch_nodes][0u] = 0u;
--        self->private_data.f_huffman_trees[a_which][v_num_branch_nodes][1u] = 0u;
--        v_num_branch_nodes += 1u;
--        v_stack_height += 1u;
-+        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
-+        goto exit;
-       }
--      v_node_index = v_stack_values[(v_stack_height - 1u)];
--      if (v_symbol_index < 2u) {
--        v_leaf_value = ((uint16_t)((769u + v_symbol_index)));
--      } else if ((v_symbol_index + 1u) < self->private_impl.f_num_symbols) {
--        v_leaf_value = ((uint16_t)((511u + v_symbol_index)));
--      } else {
--        v_leaf_value = 768u;
-+      self->private_data.s_do_decode_image_config.scratch = 20u;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(34);
-+      if (self->private_data.s_do_decode_image_config.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+        self->private_data.s_do_decode_image_config.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+        iop_a_src = io2_a_src;
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-       }
--      if (self->private_data.f_huffman_trees[a_which][v_node_index][0u] == 0u) {
--        self->private_data.f_huffman_trees[a_which][v_node_index][0u] = v_leaf_value;
--      } else {
--        self->private_data.f_huffman_trees[a_which][v_node_index][1u] = v_leaf_value;
--        v_stack_height -= 1u;
--        while (v_stack_height > 0u) {
--          v_node_index = v_stack_values[(v_stack_height - 1u)];
--          if (self->private_data.f_huffman_trees[a_which][v_node_index][1u] == 0u) {
--            break;
-+      iop_a_src += self->private_data.s_do_decode_image_config.scratch;
-+      if (self->private_impl.f_bitmap_info_len == 40u) {
-+        if (self->private_impl.f_bits_per_pixel >= 16u) {
-+          if (self->private_impl.f_padding >= 16u) {
-+            self->private_impl.f_bitmap_info_len = 56u;
-+            self->private_impl.f_padding -= 16u;
-+          } else if (self->private_impl.f_padding >= 12u) {
-+            self->private_impl.f_bitmap_info_len = 52u;
-+            self->private_impl.f_padding -= 12u;
-           }
--          v_stack_height -= 1u;
-         }
-+      } else if ((self->private_impl.f_bitmap_info_len != 52u) &&
-+          (self->private_impl.f_bitmap_info_len != 56u) &&
-+          (self->private_impl.f_bitmap_info_len != 64u) &&
-+          (self->private_impl.f_bitmap_info_len != 108u) &&
-+          (self->private_impl.f_bitmap_info_len != 124u)) {
-+        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
-+        goto exit;
-+      }
-+      if (self->private_impl.f_compression == 6u) {
-+        self->private_impl.f_compression = 3u;
-+      }
-+      if (self->private_impl.f_compression == 3u) {
-+        if (self->private_impl.f_bitmap_info_len >= 52u) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(35);
-+            uint32_t t_16;
-+            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+              t_16 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+              iop_a_src += 4;
-+            } else {
-+              self->private_data.s_do_decode_image_config.scratch = 0;
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(36);
-+              while (true) {
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+                uint32_t num_bits_16 = ((uint32_t)(*scratch >> 56));
-+                *scratch <<= 8;
-+                *scratch >>= 8;
-+                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_16;
-+                if (num_bits_16 == 24) {
-+                  t_16 = ((uint32_t)(*scratch));
-+                  break;
-+                }
-+                num_bits_16 += 8u;
-+                *scratch |= ((uint64_t)(num_bits_16)) << 56;
-+              }
-+            }
-+            self->private_impl.f_channel_masks[2u] = t_16;
-+          }
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(37);
-+            uint32_t t_17;
-+            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+              t_17 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+              iop_a_src += 4;
-+            } else {
-+              self->private_data.s_do_decode_image_config.scratch = 0;
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(38);
-+              while (true) {
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+                uint32_t num_bits_17 = ((uint32_t)(*scratch >> 56));
-+                *scratch <<= 8;
-+                *scratch >>= 8;
-+                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_17;
-+                if (num_bits_17 == 24) {
-+                  t_17 = ((uint32_t)(*scratch));
-+                  break;
-+                }
-+                num_bits_17 += 8u;
-+                *scratch |= ((uint64_t)(num_bits_17)) << 56;
-+              }
-+            }
-+            self->private_impl.f_channel_masks[1u] = t_17;
-+          }
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(39);
-+            uint32_t t_18;
-+            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+              t_18 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+              iop_a_src += 4;
-+            } else {
-+              self->private_data.s_do_decode_image_config.scratch = 0;
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(40);
-+              while (true) {
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+                uint32_t num_bits_18 = ((uint32_t)(*scratch >> 56));
-+                *scratch <<= 8;
-+                *scratch >>= 8;
-+                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_18;
-+                if (num_bits_18 == 24) {
-+                  t_18 = ((uint32_t)(*scratch));
-+                  break;
-+                }
-+                num_bits_18 += 8u;
-+                *scratch |= ((uint64_t)(num_bits_18)) << 56;
-+              }
-+            }
-+            self->private_impl.f_channel_masks[0u] = t_18;
-+          }
-+          if (self->private_impl.f_bitmap_info_len >= 56u) {
-+            {
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(41);
-+              uint32_t t_19;
-+              if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+                t_19 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+                iop_a_src += 4;
-+              } else {
-+                self->private_data.s_do_decode_image_config.scratch = 0;
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(42);
-+                while (true) {
-+                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                    goto suspend;
-+                  }
-+                  uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+                  uint32_t num_bits_19 = ((uint32_t)(*scratch >> 56));
-+                  *scratch <<= 8;
-+                  *scratch >>= 8;
-+                  *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_19;
-+                  if (num_bits_19 == 24) {
-+                    t_19 = ((uint32_t)(*scratch));
-+                    break;
-+                  }
-+                  num_bits_19 += 8u;
-+                  *scratch |= ((uint64_t)(num_bits_19)) << 56;
-+                }
-+              }
-+              self->private_impl.f_channel_masks[3u] = t_19;
-+            }
-+            self->private_data.s_do_decode_image_config.scratch = ((uint32_t)(self->private_impl.f_bitmap_info_len - 56u));
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(43);
-+            if (self->private_data.s_do_decode_image_config.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+              self->private_data.s_do_decode_image_config.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+              iop_a_src = io2_a_src;
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            iop_a_src += self->private_data.s_do_decode_image_config.scratch;
-+          }
-+          if ((self->private_impl.f_channel_masks[0u] == 255u) && (self->private_impl.f_channel_masks[1u] == 65280u) && (self->private_impl.f_channel_masks[2u] == 16711680u)) {
-+            if (self->private_impl.f_bits_per_pixel == 24u) {
-+              self->private_impl.f_compression = 0u;
-+            } else if (self->private_impl.f_bits_per_pixel == 32u) {
-+              if ((self->private_impl.f_channel_masks[3u] == 0u) || (self->private_impl.f_channel_masks[3u] == 4278190080u)) {
-+                self->private_impl.f_compression = 0u;
-+              }
-+            }
-+          }
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(44);
-+          status = wuffs_bmp__decoder__process_masks(self);
-+          if (status.repr) {
-+            goto suspend;
-+          }
-+        }
-+      } else if (self->private_impl.f_bitmap_info_len >= 40u) {
-+        v_n = (self->private_impl.f_bitmap_info_len - 40u);
-+        self->private_data.s_do_decode_image_config.scratch = v_n;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(45);
-+        if (self->private_data.s_do_decode_image_config.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+          self->private_data.s_do_decode_image_config.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+          iop_a_src = io2_a_src;
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        iop_a_src += self->private_data.s_do_decode_image_config.scratch;
-+      } else {
-+        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
-+        goto exit;
-       }
--      v_symbol_index += 1u;
-     }
--    v_code_length += 1u;
-+    if (self->private_impl.f_compression != 3u) {
-+      if (self->private_impl.f_bits_per_pixel < 16u) {
-+        if (a_src) {
-+          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+        }
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(46);
-+        status = wuffs_bmp__decoder__read_palette(self, a_src);
-+        if (a_src) {
-+          iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+        }
-+        if (status.repr) {
-+          goto suspend;
-+        }
-+      }
-+    }
-+    if (self->private_impl.f_compression == 0u) {
-+      if ((self->private_impl.f_bits_per_pixel == 1u) || (self->private_impl.f_bits_per_pixel == 2u) || (self->private_impl.f_bits_per_pixel == 4u)) {
-+        self->private_impl.f_src_pixfmt = 2198077448u;
-+        self->private_impl.f_compression = 256u;
-+      } else if (self->private_impl.f_bits_per_pixel == 8u) {
-+        self->private_impl.f_src_pixfmt = 2198077448u;
-+      } else if (self->private_impl.f_bits_per_pixel == 16u) {
-+        self->private_impl.f_compression = 3u;
-+        self->private_impl.f_channel_masks[0u] = 31u;
-+        self->private_impl.f_channel_masks[1u] = 992u;
-+        self->private_impl.f_channel_masks[2u] = 31744u;
-+        self->private_impl.f_channel_masks[3u] = 0u;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(47);
-+        status = wuffs_bmp__decoder__process_masks(self);
-+        if (status.repr) {
-+          goto suspend;
-+        }
-+        self->private_impl.f_src_pixfmt = 2164308923u;
-+      } else if (self->private_impl.f_bits_per_pixel == 24u) {
-+        self->private_impl.f_src_pixfmt = 2147485832u;
-+      } else if (self->private_impl.f_bits_per_pixel == 32u) {
-+        if (self->private_impl.f_channel_masks[3u] == 0u) {
-+          self->private_impl.f_src_pixfmt = 2415954056u;
-+        } else {
-+          self->private_impl.f_src_pixfmt = 2164295816u;
-+        }
-+      } else {
-+        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
-+        goto exit;
-+      }
-+    } else if (self->private_impl.f_compression == 1u) {
-+      if (self->private_impl.f_bits_per_pixel == 8u) {
-+        self->private_impl.f_src_pixfmt = 2198077448u;
-+      } else {
-+        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
-+        goto exit;
-+      }
-+    } else if (self->private_impl.f_compression == 2u) {
-+      if (self->private_impl.f_bits_per_pixel == 4u) {
-+        self->private_impl.f_src_pixfmt = 2198077448u;
-+      } else {
-+        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
-+        goto exit;
-+      }
-+    } else if (self->private_impl.f_compression == 3u) {
-+      if ((self->private_impl.f_bits_per_pixel == 16u) || (self->private_impl.f_bits_per_pixel == 32u)) {
-+        self->private_impl.f_src_pixfmt = 2164308923u;
-+      } else {
-+        status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
-+        goto exit;
-+      }
-+    } else {
-+      status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
-+      goto exit;
-+    }
-+    if (((self->private_impl.f_bitmap_info_len < 40u) || (self->private_impl.f_bitmap_info_len == 64u)) &&
-+        (self->private_impl.f_bits_per_pixel != 1u) &&
-+        (self->private_impl.f_bits_per_pixel != 4u) &&
-+        (self->private_impl.f_bits_per_pixel != 8u) &&
-+        (self->private_impl.f_bits_per_pixel != 24u)) {
-+      status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
-+      goto exit;
-+    }
-+    if (self->private_impl.f_bits_per_pixel == 1u) {
-+      v_byte_width = ((self->private_impl.f_width >> 3u) + (((self->private_impl.f_width & 7u) + 7u) >> 3u));
-+      self->private_impl.f_pad_per_row = ((4u - (v_byte_width & 3u)) & 3u);
-+    } else if (self->private_impl.f_bits_per_pixel == 2u) {
-+      v_byte_width = ((self->private_impl.f_width >> 2u) + (((self->private_impl.f_width & 3u) + 3u) >> 2u));
-+      self->private_impl.f_pad_per_row = ((4u - (v_byte_width & 3u)) & 3u);
-+    } else if (self->private_impl.f_bits_per_pixel == 4u) {
-+      v_byte_width = ((self->private_impl.f_width >> 1u) + (self->private_impl.f_width & 1u));
-+      self->private_impl.f_pad_per_row = ((4u - (v_byte_width & 3u)) & 3u);
-+    } else if (self->private_impl.f_bits_per_pixel == 8u) {
-+      self->private_impl.f_pad_per_row = ((4u - (self->private_impl.f_width & 3u)) & 3u);
-+    } else if (self->private_impl.f_bits_per_pixel == 16u) {
-+      self->private_impl.f_pad_per_row = ((self->private_impl.f_width & 1u) * 2u);
-+    } else if (self->private_impl.f_bits_per_pixel == 24u) {
-+      self->private_impl.f_pad_per_row = (self->private_impl.f_width & 3u);
-+    } else if (self->private_impl.f_bits_per_pixel == 32u) {
-+      self->private_impl.f_pad_per_row = 0u;
-+    }
-+    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
-+    if (a_dst != NULL) {
-+      v_dst_pixfmt = 2164295816u;
-+      if ((self->private_impl.f_channel_num_bits[0u] > 8u) ||
-+          (self->private_impl.f_channel_num_bits[1u] > 8u) ||
-+          (self->private_impl.f_channel_num_bits[2u] > 8u) ||
-+          (self->private_impl.f_channel_num_bits[3u] > 8u)) {
-+        v_dst_pixfmt = 2164308923u;
-+      } else if (((self->private_impl.f_src_pixfmt == 2198077448u) || (self->private_impl.f_src_pixfmt == 2147485832u) || (self->private_impl.f_src_pixfmt == 2415954056u)) || ((self->private_impl.f_src_pixfmt == 2164308923u) && (self->private_impl.f_channel_masks[3u] == 0u))) {
-+        v_dst_pixfmt = 2415954056u;
-+      }
-+      wuffs_base__image_config__set(
-+          a_dst,
-+          v_dst_pixfmt,
-+          0u,
-+          self->private_impl.f_width,
-+          self->private_impl.f_height,
-+          self->private_impl.f_frame_config_io_position,
-+          (self->private_impl.f_channel_masks[3u] == 0u));
-+    }
-+    self->private_impl.f_call_sequence = 32u;
-+
-+    ok:
-+    self->private_impl.p_do_decode_image_config = 0;
-+    goto exit;
-   }
--  if (v_stack_height != 0u) {
--    return wuffs_base__make_status(wuffs_bzip2__error__bad_huffman_code_under_subscribed);
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
--  return wuffs_base__make_status(NULL);
-+
-+  return status;
- }
- 
--// -------- func bzip2.decoder.build_huffman_table
-+// -------- func bmp.decoder.decode_frame_config
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_bzip2__decoder__build_huffman_table(
--    wuffs_bzip2__decoder* self,
--    uint32_t a_which) {
--  uint32_t v_i = 0;
--  uint32_t v_bits = 0;
--  uint16_t v_n_bits = 0;
--  uint16_t v_child = 0;
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_bmp__decoder__decode_frame_config(
-+    wuffs_bmp__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 2)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  while (v_i < 256u) {
--    v_bits = (v_i << 24u);
--    v_n_bits = 0u;
--    v_child = 0u;
--    while ((v_child < 257u) && (v_n_bits < 8u)) {
--      v_child = self->private_data.f_huffman_trees[a_which][v_child][(v_bits >> 31u)];
--      v_bits <<= 1u;
--#if defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wconversion"
--#endif
--      v_n_bits += 1u;
--#if defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_bmp__decoder__do_decode_frame_config(self, a_dst, a_src);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_bmp__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-     }
--    self->private_data.f_huffman_tables[a_which][v_i] = ((uint16_t)((v_child | (v_n_bits << 12u))));
--    v_i += 1u;
-+
-+    ok:
-+    self->private_impl.p_decode_frame_config = 0;
-+    goto exit;
-   }
--  return wuffs_base__make_empty_struct();
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
- }
- 
--// -------- func bzip2.decoder.invert_bwt
-+// -------- func bmp.decoder.do_decode_frame_config
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_bzip2__decoder__invert_bwt(
--    wuffs_bzip2__decoder* self) {
--  uint32_t v_i = 0;
--  uint32_t v_letter = 0;
--  uint32_t v_sum = 0;
--  uint32_t v_old_sum = 0;
-+static wuffs_base__status
-+wuffs_bmp__decoder__do_decode_frame_config(
-+    wuffs_bmp__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  v_sum = 0u;
--  v_i = 0u;
--  while (v_i < 256u) {
--    v_old_sum = v_sum;
--    v_sum += self->private_data.f_letter_counts[v_i];
--    self->private_data.f_letter_counts[v_i] = v_old_sum;
--    v_i += 1u;
--  }
--  v_i = 0u;
--  while (v_i < self->private_impl.f_block_size) {
--    v_letter = (self->private_data.f_bwt[v_i] & 255u);
--    self->private_data.f_bwt[(self->private_data.f_letter_counts[v_letter] & 1048575u)] |= (v_i << 12u);
--    self->private_data.f_letter_counts[v_letter] += 1u;
--    v_i += 1u;
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-   }
--  return wuffs_base__make_empty_struct();
--}
--
--// -------- func bzip2.decoder.flush_fast
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_bzip2__decoder__flush_fast(
--    wuffs_bzip2__decoder* self,
--    wuffs_base__io_buffer* a_dst) {
--  uint32_t v_flush_pointer = 0;
--  uint32_t v_flush_repeat_count = 0;
--  uint8_t v_flush_prev = 0;
--  uint32_t v_block_checksum_have = 0;
--  uint32_t v_block_size = 0;
--  uint32_t v_entry = 0;
--  uint8_t v_curr = 0;
- 
--  uint8_t* iop_a_dst = NULL;
--  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_dst && a_dst->data.ptr) {
--    io0_a_dst = a_dst->data.ptr;
--    io1_a_dst = io0_a_dst + a_dst->meta.wi;
--    iop_a_dst = io1_a_dst;
--    io2_a_dst = io0_a_dst + a_dst->data.len;
--    if (a_dst->meta.closed) {
--      io2_a_dst = iop_a_dst;
--    }
--  }
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--  v_flush_pointer = self->private_impl.f_flush_pointer;
--  v_flush_repeat_count = self->private_impl.f_flush_repeat_count;
--  v_flush_prev = self->private_impl.f_flush_prev;
--  v_block_checksum_have = self->private_impl.f_block_checksum_have;
--  v_block_size = self->private_impl.f_block_size;
--  while ((v_block_size > 0u) && (((uint64_t)(io2_a_dst - iop_a_dst)) >= 255u)) {
--    if (v_flush_repeat_count < 4u) {
--      v_entry = self->private_data.f_bwt[v_flush_pointer];
--      v_curr = ((uint8_t)(v_entry));
--      v_flush_pointer = (v_entry >> 12u);
--      if (v_curr == v_flush_prev) {
--        v_flush_repeat_count += 1u;
--      } else {
--        v_flush_repeat_count = 1u;
-+    if (self->private_impl.f_call_sequence == 32u) {
-+    } else if (self->private_impl.f_call_sequence < 32u) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-       }
--      v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[(((uint8_t)((v_block_checksum_have >> 24u))) ^ v_curr)] ^ ((uint32_t)(v_block_checksum_have << 8u)));
--      (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_curr), iop_a_dst += 1);
--      v_flush_prev = v_curr;
--      v_block_size -= 1u;
--    } else {
--      v_entry = self->private_data.f_bwt[v_flush_pointer];
--      v_curr = ((uint8_t)(v_entry));
--      v_flush_pointer = (v_entry >> 12u);
--      v_flush_repeat_count = ((uint32_t)(v_curr));
--      while (v_flush_repeat_count > 0u) {
--        v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[(((uint8_t)((v_block_checksum_have >> 24u))) ^ v_flush_prev)] ^ ((uint32_t)(v_block_checksum_have << 8u)));
--        if (((uint64_t)(io2_a_dst - iop_a_dst)) > 0u) {
--          (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_flush_prev), iop_a_dst += 1);
--        }
--        v_flush_repeat_count -= 1u;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      status = wuffs_bmp__decoder__do_decode_image_config(self, NULL, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-       }
--      v_flush_repeat_count = 0u;
--      v_flush_prev = v_curr;
--      v_block_size -= 1u;
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+    } else if (self->private_impl.f_call_sequence == 40u) {
-+      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
-+        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
-+        goto exit;
-+      }
-+    } else if (self->private_impl.f_call_sequence == 64u) {
-+      self->private_impl.f_call_sequence = 96u;
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-+    } else {
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-     }
-+    if (a_dst != NULL) {
-+      wuffs_base__frame_config__set(
-+          a_dst,
-+          wuffs_base__utility__make_rect_ie_u32(
-+          0u,
-+          0u,
-+          self->private_impl.f_width,
-+          self->private_impl.f_height),
-+          ((wuffs_base__flicks)(0u)),
-+          0u,
-+          self->private_impl.f_frame_config_io_position,
-+          0u,
-+          true,
-+          false,
-+          4278190080u);
-+    }
-+    self->private_impl.f_call_sequence = 64u;
-+
-+    ok:
-+    self->private_impl.p_do_decode_frame_config = 0;
-+    goto exit;
-   }
--  self->private_impl.f_flush_pointer = v_flush_pointer;
--  self->private_impl.f_flush_repeat_count = v_flush_repeat_count;
--  self->private_impl.f_flush_prev = v_flush_prev;
--  self->private_impl.f_block_checksum_have = v_block_checksum_have;
--  if (v_block_size <= 900000u) {
--    self->private_impl.f_block_size = v_block_size;
--  }
--  if (a_dst && a_dst->data.ptr) {
--    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
- 
--  return wuffs_base__make_empty_struct();
-+  return status;
- }
- 
--// -------- func bzip2.decoder.flush_slow
-+// -------- func bmp.decoder.decode_frame
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_bzip2__decoder__flush_slow(
--    wuffs_bzip2__decoder* self,
--    wuffs_base__io_buffer* a_dst) {
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_bmp__decoder__decode_frame(
-+    wuffs_bmp__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_dst || !a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 3)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint32_t v_flush_pointer = 0;
--  uint32_t v_flush_repeat_count = 0;
--  uint8_t v_flush_prev = 0;
--  uint32_t v_block_checksum_have = 0;
--  uint32_t v_block_size = 0;
--  uint32_t v_entry = 0;
--  uint8_t v_curr = 0;
--
--  uint8_t* iop_a_dst = NULL;
--  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_dst && a_dst->data.ptr) {
--    io0_a_dst = a_dst->data.ptr;
--    io1_a_dst = io0_a_dst + a_dst->meta.wi;
--    iop_a_dst = io1_a_dst;
--    io2_a_dst = io0_a_dst + a_dst->data.len;
--    if (a_dst->meta.closed) {
--      io2_a_dst = iop_a_dst;
--    }
--  }
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--  uint32_t coro_susp_point = self->private_impl.p_flush_slow[0];
--  if (coro_susp_point) {
--    v_flush_pointer = self->private_data.s_flush_slow[0].v_flush_pointer;
--    v_flush_repeat_count = self->private_data.s_flush_slow[0].v_flush_repeat_count;
--    v_flush_prev = self->private_data.s_flush_slow[0].v_flush_prev;
--    v_block_checksum_have = self->private_data.s_flush_slow[0].v_block_checksum_have;
--    v_block_size = self->private_data.s_flush_slow[0].v_block_size;
--    v_curr = self->private_data.s_flush_slow[0].v_curr;
--  }
-+  uint32_t coro_susp_point = self->private_impl.p_decode_frame;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    v_flush_pointer = self->private_impl.f_flush_pointer;
--    v_flush_repeat_count = self->private_impl.f_flush_repeat_count;
--    v_flush_prev = self->private_impl.f_flush_prev;
--    v_block_checksum_have = self->private_impl.f_block_checksum_have;
--    v_block_size = self->private_impl.f_block_size;
--    while ((v_block_size > 0u) &&  ! (self->private_impl.p_flush_slow[0] != 0)) {
--      if (v_flush_repeat_count < 4u) {
--        v_entry = self->private_data.f_bwt[v_flush_pointer];
--        v_curr = ((uint8_t)(v_entry));
--        v_flush_pointer = (v_entry >> 12u);
--        if (v_curr == v_flush_prev) {
--          v_flush_repeat_count += 1u;
--        } else {
--          v_flush_repeat_count = 1u;
--        }
--        v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[(((uint8_t)((v_block_checksum_have >> 24u))) ^ v_curr)] ^ ((uint32_t)(v_block_checksum_have << 8u)));
--        self->private_data.s_flush_slow[0].scratch = v_curr;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--        if (iop_a_dst == io2_a_dst) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--          goto suspend;
--        }
--        *iop_a_dst++ = ((uint8_t)(self->private_data.s_flush_slow[0].scratch));
--        v_flush_prev = v_curr;
--        v_block_size -= 1u;
--      } else {
--        v_entry = self->private_data.f_bwt[v_flush_pointer];
--        v_curr = ((uint8_t)(v_entry));
--        v_flush_pointer = (v_entry >> 12u);
--        v_flush_repeat_count = ((uint32_t)(v_curr));
--        while (v_flush_repeat_count > 0u) {
--          v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[(((uint8_t)((v_block_checksum_have >> 24u))) ^ v_flush_prev)] ^ ((uint32_t)(v_block_checksum_have << 8u)));
--          self->private_data.s_flush_slow[0].scratch = v_flush_prev;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--          if (iop_a_dst == io2_a_dst) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--            goto suspend;
--          }
--          *iop_a_dst++ = ((uint8_t)(self->private_data.s_flush_slow[0].scratch));
--          v_flush_repeat_count -= 1u;
--        }
--        v_flush_repeat_count = 0u;
--        v_flush_prev = v_curr;
--        v_block_size -= 1u;
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_bmp__decoder__do_decode_frame(self,
-+            a_dst,
-+            a_src,
-+            a_blend,
-+            a_workbuf,
-+            a_opts);
-+        v_status = t_0;
-       }
--    }
--    self->private_impl.f_flush_pointer = v_flush_pointer;
--    self->private_impl.f_flush_repeat_count = v_flush_repeat_count;
--    self->private_impl.f_flush_prev = v_flush_prev;
--    self->private_impl.f_block_checksum_have = v_block_checksum_have;
--    if (v_block_size <= 900000u) {
--      self->private_impl.f_block_size = v_block_size;
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_bmp__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-     }
- 
--    goto ok;
-     ok:
--    self->private_impl.p_flush_slow[0] = 0;
-+    self->private_impl.p_decode_frame = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_flush_slow[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_flush_slow[0].v_flush_pointer = v_flush_pointer;
--  self->private_data.s_flush_slow[0].v_flush_repeat_count = v_flush_repeat_count;
--  self->private_data.s_flush_slow[0].v_flush_prev = v_flush_prev;
--  self->private_data.s_flush_slow[0].v_block_checksum_have = v_block_checksum_have;
--  self->private_data.s_flush_slow[0].v_block_size = v_block_size;
--  self->private_data.s_flush_slow[0].v_curr = v_curr;
-+  self->private_impl.p_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
- 
-   goto exit;
-   exit:
--  if (a_dst && a_dst->data.ptr) {
--    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-   }
--
-   return status;
- }
- 
--// -------- func bzip2.decoder.decode_huffman_fast
-+// -------- func bmp.decoder.do_decode_frame
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_bzip2__decoder__decode_huffman_fast(
--    wuffs_bzip2__decoder* self,
--    wuffs_base__io_buffer* a_src) {
-+wuffs_bmp__decoder__do_decode_frame(
-+    wuffs_bmp__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint32_t v_bits = 0;
--  uint32_t v_n_bits = 0;
--  uint32_t v_block_size = 0;
--  uint8_t v_which = 0;
--  uint32_t v_ticks = 0;
--  uint32_t v_section = 0;
--  uint32_t v_run_shift = 0;
--  uint16_t v_table_entry = 0;
--  uint16_t v_child = 0;
--  uint32_t v_child_ff = 0;
--  uint32_t v_i = 0;
--  uint32_t v_j = 0;
--  uint32_t v_output = 0;
--  uint32_t v_run = 0;
--  uint32_t v_mtft0 = 0;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -31802,90 +32760,132 @@ wuffs_bzip2__decoder__decode_huffman_fast(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  v_bits = self->private_impl.f_bits;
--  v_n_bits = self->private_impl.f_n_bits;
--  v_block_size = self->private_impl.f_block_size;
--  v_which = self->private_impl.f_decode_huffman_which;
--  v_ticks = self->private_impl.f_decode_huffman_ticks;
--  v_section = self->private_impl.f_decode_huffman_section;
--  v_run_shift = self->private_impl.f_decode_huffman_run_shift;
--  while (((uint64_t)(io2_a_src - iop_a_src)) >= 4u) {
--    if (v_ticks > 0u) {
--      v_ticks -= 1u;
--    } else {
--      v_ticks = 49u;
--      v_section += 1u;
--      if (v_section >= self->private_impl.f_num_sections) {
--        status = wuffs_base__make_status(wuffs_bzip2__error__bad_number_of_sections);
--        goto exit;
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_call_sequence == 64u) {
-+    } else if (self->private_impl.f_call_sequence < 64u) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-       }
--      v_which = WUFFS_BZIP2__CLAMP_TO_5[(self->private_data.f_huffman_selectors[(v_section & 32767u)] & 7u)];
--    }
--    v_bits |= (wuffs_base__peek_u32be__no_bounds_check(iop_a_src) >> v_n_bits);
--    iop_a_src += ((31u - v_n_bits) >> 3u);
--    v_n_bits |= 24u;
--    v_table_entry = self->private_data.f_huffman_tables[v_which][(v_bits >> 24u)];
--    v_bits <<= (v_table_entry >> 12u);
--    v_n_bits -= ((uint32_t)((v_table_entry >> 12u)));
--    v_child = (v_table_entry & 1023u);
--    while (v_child < 257u) {
--      v_child = self->private_data.f_huffman_trees[v_which][v_child][(v_bits >> 31u)];
--      v_bits <<= 1u;
--      if (v_n_bits <= 0u) {
--        status = wuffs_base__make_status(wuffs_bzip2__error__internal_error_inconsistent_huffman_decoder_state);
--        goto exit;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      status = wuffs_bmp__decoder__do_decode_frame_config(self, NULL, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-       }
--      v_n_bits -= 1u;
--    }
--    if (v_child < 768u) {
--      v_child_ff = ((uint32_t)((v_child & 255u)));
--      v_output = ((uint32_t)(self->private_data.f_mtft[v_child_ff]));
--      wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_mtft, 1, (1u + v_child_ff)), wuffs_base__make_slice_u8(self->private_data.f_mtft, v_child_ff));
--      self->private_data.f_mtft[0u] = ((uint8_t)(v_output));
--      self->private_data.f_letter_counts[v_output] += 1u;
--      self->private_data.f_bwt[v_block_size] = v_output;
--      if (v_block_size >= self->private_impl.f_max_incl_block_size) {
--        status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
--        goto exit;
-+      if (status.repr) {
-+        goto suspend;
-       }
--      v_block_size += 1u;
--      v_run_shift = 0u;
--      continue;
--    } else if (v_child == 768u) {
--      self->private_impl.f_decode_huffman_finished = true;
--      break;
--    }
--    if (v_run_shift >= 23u) {
--      status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
--      goto exit;
-+    } else {
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-     }
--    v_run = ((((uint32_t)(v_child)) & 3u) << v_run_shift);
--    v_run_shift += 1u;
--    v_i = v_block_size;
--    v_j = (v_run + v_block_size);
--    if (v_j > self->private_impl.f_max_incl_block_size) {
--      status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
--      goto exit;
-+    self->private_data.s_do_decode_frame.scratch = self->private_impl.f_padding;
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+    if (self->private_data.s_do_decode_frame.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+      self->private_data.s_do_decode_frame.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+      iop_a_src = io2_a_src;
-+      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+      goto suspend;
-     }
--    v_block_size = v_j;
--    v_mtft0 = ((uint32_t)(self->private_data.f_mtft[0u]));
--    self->private_data.f_letter_counts[v_mtft0] += v_run;
--    while (v_i < v_j) {
--      self->private_data.f_bwt[v_i] = v_mtft0;
--      v_i += 1u;
-+    iop_a_src += self->private_data.s_do_decode_frame.scratch;
-+    if ((self->private_impl.f_width > 0u) && (self->private_impl.f_height > 0u)) {
-+      self->private_impl.f_dst_x = 0u;
-+      if (self->private_impl.f_top_down) {
-+        self->private_impl.f_dst_y = 0u;
-+        self->private_impl.f_dst_y_inc = 1u;
-+      } else {
-+        self->private_impl.f_dst_y = ((uint32_t)(self->private_impl.f_height - 1u));
-+        self->private_impl.f_dst_y_inc = 4294967295u;
-+      }
-+      v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
-+          wuffs_base__pixel_buffer__pixel_format(a_dst),
-+          wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048)),
-+          wuffs_base__utility__make_pixel_format(self->private_impl.f_src_pixfmt),
-+          wuffs_base__make_slice_u8(self->private_data.f_src_palette, 1024),
-+          a_blend);
-+      if ( ! wuffs_base__status__is_ok(&v_status)) {
-+        status = v_status;
-+        if (wuffs_base__status__is_error(&status)) {
-+          goto exit;
-+        } else if (wuffs_base__status__is_suspension(&status)) {
-+          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+          goto exit;
-+        }
-+        goto ok;
-+      }
-+      while (true) {
-+        if (self->private_impl.f_compression == 0u) {
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          v_status = wuffs_bmp__decoder__swizzle_none(self, a_dst, a_src);
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+        } else if (self->private_impl.f_compression < 3u) {
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          v_status = wuffs_bmp__decoder__swizzle_rle(self, a_dst, a_src);
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+        } else if (self->private_impl.f_compression == 3u) {
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          v_status = wuffs_bmp__decoder__swizzle_bitfields(self, a_dst, a_src);
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+        } else {
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          v_status = wuffs_bmp__decoder__swizzle_low_bit_depth(self, a_dst, a_src);
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+        }
-+        if (wuffs_base__status__is_ok(&v_status)) {
-+          break;
-+        } else if (v_status.repr != wuffs_bmp__note__internal_note_short_read) {
-+          status = v_status;
-+          if (wuffs_base__status__is_error(&status)) {
-+            goto exit;
-+          } else if (wuffs_base__status__is_suspension(&status)) {
-+            status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+            goto exit;
-+          }
-+          goto ok;
-+        }
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
-+      }
-+      self->private_data.s_do_decode_frame.scratch = self->private_impl.f_pending_pad;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+      if (self->private_data.s_do_decode_frame.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+        self->private_data.s_do_decode_frame.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+        iop_a_src = io2_a_src;
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      iop_a_src += self->private_data.s_do_decode_frame.scratch;
-+      self->private_impl.f_pending_pad = 0u;
-     }
-+    self->private_impl.f_call_sequence = 96u;
-+
-+    ok:
-+    self->private_impl.p_do_decode_frame = 0;
-+    goto exit;
-   }
--  self->private_impl.f_bits = v_bits;
--  self->private_impl.f_n_bits = v_n_bits;
--  self->private_impl.f_block_size = v_block_size;
--  self->private_impl.f_decode_huffman_which = v_which;
--  self->private_impl.f_decode_huffman_ticks = v_ticks;
--  self->private_impl.f_decode_huffman_section = v_section;
--  self->private_impl.f_decode_huffman_run_shift = v_run_shift;
--  status = wuffs_base__make_status(NULL);
--  goto ok;
- 
--  ok:
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-   goto exit;
-   exit:
-   if (a_src && a_src->data.ptr) {
-@@ -31895,24 +32895,27 @@ wuffs_bzip2__decoder__decode_huffman_fast(
-   return status;
- }
- 
--// -------- func bzip2.decoder.decode_huffman_slow
-+// -------- func bmp.decoder.swizzle_none
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_bzip2__decoder__decode_huffman_slow(
--    wuffs_bzip2__decoder* self,
-+wuffs_bmp__decoder__swizzle_none(
-+    wuffs_bmp__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-     wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint8_t v_c = 0;
--  uint32_t v_node_index = 0;
--  uint16_t v_child = 0;
--  uint32_t v_child_ff = 0;
--  uint32_t v_i = 0;
--  uint32_t v_j = 0;
--  uint32_t v_output = 0;
--  uint32_t v_run = 0;
--  uint32_t v_mtft0 = 0;
-+  wuffs_base__pixel_format v_dst_pixfmt = {0};
-+  uint32_t v_dst_bits_per_pixel = 0;
-+  uint32_t v_dst_bytes_per_pixel = 0;
-+  uint64_t v_dst_bytes_per_row = 0;
-+  uint32_t v_src_bytes_per_pixel = 0;
-+  wuffs_base__slice_u8 v_dst_palette = {0};
-+  wuffs_base__table_u8 v_tab = {0};
-+  wuffs_base__slice_u8 v_dst = {0};
-+  uint64_t v_i = 0;
-+  uint64_t v_j = 0;
-+  uint64_t v_n = 0;
- 
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -31925,99 +32928,90 @@ wuffs_bzip2__decoder__decode_huffman_slow(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_huffman_slow[0];
--  if (coro_susp_point) {
--    v_node_index = self->private_data.s_decode_huffman_slow[0].v_node_index;
-+  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
-+  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
-+  if ((v_dst_bits_per_pixel & 7u) != 0u) {
-+    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+    goto exit;
-   }
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    while ( ! (self->private_impl.p_decode_huffman_slow[0] != 0)) {
--      if (self->private_impl.f_decode_huffman_ticks > 0u) {
--        self->private_impl.f_decode_huffman_ticks -= 1u;
--      } else {
--        self->private_impl.f_decode_huffman_ticks = 49u;
--        self->private_impl.f_decode_huffman_section += 1u;
--        if (self->private_impl.f_decode_huffman_section >= self->private_impl.f_num_sections) {
--          status = wuffs_base__make_status(wuffs_bzip2__error__bad_number_of_sections);
--          goto exit;
--        }
--        self->private_impl.f_decode_huffman_which = WUFFS_BZIP2__CLAMP_TO_5[(self->private_data.f_huffman_selectors[(self->private_impl.f_decode_huffman_section & 32767u)] & 7u)];
-+  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
-+  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
-+  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048));
-+  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
-+  label__outer__continue:;
-+  while (true) {
-+    while (self->private_impl.f_pending_pad > 0u) {
-+      if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+        status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
-+        goto ok;
-       }
--      v_node_index = 0u;
--      while (true) {
--        if (self->private_impl.f_n_bits <= 0u) {
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint8_t t_0 = *iop_a_src++;
--            v_c = t_0;
--          }
--          self->private_impl.f_bits = (((uint32_t)(v_c)) << 24u);
--          self->private_impl.f_n_bits = 8u;
--        }
--        v_child = self->private_data.f_huffman_trees[self->private_impl.f_decode_huffman_which][v_node_index][(self->private_impl.f_bits >> 31u)];
--        self->private_impl.f_bits <<= 1u;
--        self->private_impl.f_n_bits -= 1u;
--        if (v_child < 257u) {
--          v_node_index = ((uint32_t)(v_child));
--          continue;
--        } else if (v_child < 768u) {
--          v_child_ff = ((uint32_t)((v_child & 255u)));
--          v_output = ((uint32_t)(self->private_data.f_mtft[v_child_ff]));
--          wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_mtft, 1, (1u + v_child_ff)), wuffs_base__make_slice_u8(self->private_data.f_mtft, v_child_ff));
--          self->private_data.f_mtft[0u] = ((uint8_t)(v_output));
--          self->private_data.f_letter_counts[v_output] += 1u;
--          self->private_data.f_bwt[self->private_impl.f_block_size] = v_output;
--          if (self->private_impl.f_block_size >= self->private_impl.f_max_incl_block_size) {
--            status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
--            goto exit;
-+      self->private_impl.f_pending_pad -= 1u;
-+      iop_a_src += 1u;
-+    }
-+    while (true) {
-+      if (self->private_impl.f_dst_x == self->private_impl.f_width) {
-+        self->private_impl.f_dst_x = 0u;
-+        self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
-+        if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
-+          if (self->private_impl.f_height > 0u) {
-+            self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row;
-           }
--          self->private_impl.f_block_size += 1u;
--          self->private_impl.f_decode_huffman_run_shift = 0u;
--          break;
--        } else if (v_child == 768u) {
--          self->private_impl.f_decode_huffman_finished = true;
-           goto label__outer__break;
-+        } else if (self->private_impl.f_pad_per_row != 0u) {
-+          self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row;
-+          goto label__outer__continue;
-         }
--        if (self->private_impl.f_decode_huffman_run_shift >= 23u) {
--          status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
-+      }
-+      v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
-+      if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
-+        v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
-+      }
-+      v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
-+      if (v_i >= ((uint64_t)(v_dst.len))) {
-+        if (self->private_impl.f_bits_per_pixel > 32u) {
-+          status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
-           goto exit;
-         }
--        v_run = ((((uint32_t)(v_child)) & 3u) << self->private_impl.f_decode_huffman_run_shift);
--        self->private_impl.f_decode_huffman_run_shift += 1u;
--        v_i = self->private_impl.f_block_size;
--        v_j = (v_run + self->private_impl.f_block_size);
--        if (v_j > self->private_impl.f_max_incl_block_size) {
--          status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
-+        v_src_bytes_per_pixel = (self->private_impl.f_bits_per_pixel / 8u);
-+        if (v_src_bytes_per_pixel == 0u) {
-+          status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
-           goto exit;
-         }
--        self->private_impl.f_block_size = v_j;
--        v_mtft0 = ((uint32_t)(self->private_data.f_mtft[0u]));
--        self->private_data.f_letter_counts[v_mtft0] += v_run;
--        while (v_i < v_j) {
--          self->private_data.f_bwt[v_i] = v_mtft0;
--          v_i += 1u;
-+        v_n = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(v_src_bytes_per_pixel)));
-+        v_n = wuffs_base__u64__min(v_n, ((uint64_t)(((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x)))));
-+        v_j = v_n;
-+        while (v_j >= 8u) {
-+          if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 8u)))) {
-+            iop_a_src += (v_src_bytes_per_pixel * 8u);
-+          }
-+          v_j -= 8u;
-         }
--        break;
-+        while (v_j > 0u) {
-+          if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 1u)))) {
-+            iop_a_src += (v_src_bytes_per_pixel * 1u);
-+          }
-+          v_j -= 1u;
-+        }
-+      } else {
-+        v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
-+            &self->private_impl.f_swizzler,
-+            wuffs_base__slice_u8__subslice_i(v_dst, v_i),
-+            v_dst_palette,
-+            &iop_a_src,
-+            io2_a_src);
-+      }
-+      if (v_n == 0u) {
-+        status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
-+        goto ok;
-       }
-+      wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
-     }
--    label__outer__break:;
--
--    goto ok;
--    ok:
--    self->private_impl.p_decode_huffman_slow[0] = 0;
--    goto exit;
-   }
-+  label__outer__break:;
-+  status = wuffs_base__make_status(NULL);
-+  goto ok;
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_huffman_slow[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_decode_huffman_slow[0].v_node_index = v_node_index;
--
-+  ok:
-   goto exit;
-   exit:
-   if (a_src && a_src->data.ptr) {
-@@ -32027,256 +33021,33 @@ wuffs_bzip2__decoder__decode_huffman_slow(
-   return status;
- }
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BZIP2)
--
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CBOR)
--
--// ---------------- Status Codes Implementations
--
--const char wuffs_cbor__error__bad_input[] = "#cbor: bad input";
--const char wuffs_cbor__error__unsupported_recursion_depth[] = "#cbor: unsupported recursion depth";
--const char wuffs_cbor__error__internal_error_inconsistent_i_o[] = "#cbor: internal error: inconsistent I/O";
--const char wuffs_cbor__error__internal_error_inconsistent_token_length[] = "#cbor: internal error: inconsistent token length";
--
--// ---------------- Private Consts
--
--static const uint32_t
--WUFFS_CBOR__LITERALS[4] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  8388612, 8388616, 8388610, 8388609,
--};
--
--static const uint8_t
--WUFFS_CBOR__TOKEN_LENGTHS[32] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  1, 1, 1, 1, 1, 1, 1, 1,
--  1, 1, 1, 1, 1, 1, 1, 1,
--  1, 1, 1, 1, 1, 1, 1, 1,
--  2, 3, 5, 9, 0, 0, 0, 1,
--};
--
--// ---------------- Private Initializer Prototypes
--
--// ---------------- Private Function Prototypes
--
--// ---------------- VTables
--
--const wuffs_base__token_decoder__func_ptrs
--wuffs_cbor__decoder__func_ptrs_for__wuffs_base__token_decoder = {
--  (wuffs_base__status(*)(void*,
--      wuffs_base__token_buffer*,
--      wuffs_base__io_buffer*,
--      wuffs_base__slice_u8))(&wuffs_cbor__decoder__decode_tokens),
--  (uint64_t(*)(const void*,
--      uint32_t))(&wuffs_cbor__decoder__get_quirk),
--  (uint64_t(*)(const void*))(&wuffs_cbor__decoder__history_retain_length),
--  (wuffs_base__status(*)(void*,
--      uint32_t,
--      uint64_t))(&wuffs_cbor__decoder__set_quirk),
--  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_cbor__decoder__workbuf_len),
--};
--
--// ---------------- Initializer Implementations
--
--wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_cbor__decoder__initialize(
--    wuffs_cbor__decoder* self,
--    size_t sizeof_star_self,
--    uint64_t wuffs_version,
--    uint32_t options){
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (sizeof(*self) != sizeof_star_self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
--  }
--  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
--      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
--    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
--  }
--
--  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
--    // The whole point of this if-check is to detect an uninitialized *self.
--    // We disable the warning on GCC. Clang-5.0 does not have this warning.
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
--#endif
--    if (self->private_impl.magic != 0) {
--      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
--    }
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--  } else {
--    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
--      memset(self, 0, sizeof(*self));
--      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
--    } else {
--      memset(&(self->private_impl), 0, sizeof(self->private_impl));
--    }
--  }
--
--  self->private_impl.magic = WUFFS_BASE__MAGIC;
--  self->private_impl.vtable_for__wuffs_base__token_decoder.vtable_name =
--      wuffs_base__token_decoder__vtable_name;
--  self->private_impl.vtable_for__wuffs_base__token_decoder.function_pointers =
--      (const void*)(&wuffs_cbor__decoder__func_ptrs_for__wuffs_base__token_decoder);
--  return wuffs_base__make_status(NULL);
--}
--
--wuffs_cbor__decoder*
--wuffs_cbor__decoder__alloc(void) {
--  wuffs_cbor__decoder* x =
--      (wuffs_cbor__decoder*)(calloc(sizeof(wuffs_cbor__decoder), 1));
--  if (!x) {
--    return NULL;
--  }
--  if (wuffs_cbor__decoder__initialize(
--      x, sizeof(wuffs_cbor__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
--    free(x);
--    return NULL;
--  }
--  return x;
--}
--
--size_t
--sizeof__wuffs_cbor__decoder(void) {
--  return sizeof(wuffs_cbor__decoder);
--}
--
--// ---------------- Function Implementations
--
--// -------- func cbor.decoder.get_quirk
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_cbor__decoder__get_quirk(
--    const wuffs_cbor__decoder* self,
--    uint32_t a_key) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
--
--  return 0u;
--}
--
--// -------- func cbor.decoder.set_quirk
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_cbor__decoder__set_quirk(
--    wuffs_cbor__decoder* self,
--    uint32_t a_key,
--    uint64_t a_value) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--
--  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
--}
--
--// -------- func cbor.decoder.history_retain_length
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_cbor__decoder__history_retain_length(
--    const wuffs_cbor__decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
--
--  return 0u;
--}
--
--// -------- func cbor.decoder.workbuf_len
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_cbor__decoder__workbuf_len(
--    const wuffs_cbor__decoder* self) {
--  if (!self) {
--    return wuffs_base__utility__empty_range_ii_u64();
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_range_ii_u64();
--  }
--
--  return wuffs_base__utility__empty_range_ii_u64();
--}
--
--// -------- func cbor.decoder.decode_tokens
-+// -------- func bmp.decoder.swizzle_rle
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_cbor__decoder__decode_tokens(
--    wuffs_cbor__decoder* self,
--    wuffs_base__token_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__slice_u8 a_workbuf) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--  if (!a_dst || !a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 1)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
--  }
--  self->private_impl.active_coroutine = 0;
-+static wuffs_base__status
-+wuffs_bmp__decoder__swizzle_rle(
-+    wuffs_bmp__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint64_t v_string_length = 0;
--  uint64_t v_n64 = 0;
--  uint32_t v_depth = 0;
--  uint32_t v_stack_byte = 0;
--  uint32_t v_stack_bit = 0;
--  uint32_t v_stack_val = 0;
--  uint32_t v_token_length = 0;
--  uint32_t v_vminor = 0;
--  uint32_t v_vminor_alt = 0;
--  uint32_t v_continued = 0;
--  uint8_t v_c = 0;
--  uint8_t v_c_major = 0;
--  uint8_t v_c_minor = 0;
--  bool v_tagged = false;
--  uint8_t v_indefinite_string_major_type = 0;
-+  wuffs_base__pixel_format v_dst_pixfmt = {0};
-+  uint32_t v_dst_bits_per_pixel = 0;
-+  uint32_t v_dst_bytes_per_pixel = 0;
-+  uint64_t v_dst_bytes_per_row = 0;
-+  wuffs_base__slice_u8 v_dst_palette = {0};
-+  wuffs_base__table_u8 v_tab = {0};
-+  wuffs_base__slice_u8 v_row = {0};
-+  wuffs_base__slice_u8 v_dst = {0};
-+  uint64_t v_i = 0;
-+  uint64_t v_n = 0;
-+  uint32_t v_p0 = 0;
-+  uint8_t v_code = 0;
-+  uint8_t v_indexes[2] = {0};
-+  uint32_t v_rle_state = 0;
-+  uint32_t v_chunk_bits = 0;
-+  uint32_t v_chunk_count = 0;
- 
--  wuffs_base__token* iop_a_dst = NULL;
--  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_dst && a_dst->data.ptr) {
--    io0_a_dst = a_dst->data.ptr;
--    io1_a_dst = io0_a_dst + a_dst->meta.wi;
--    iop_a_dst = io1_a_dst;
--    io2_a_dst = io0_a_dst + a_dst->data.len;
--    if (a_dst->meta.closed) {
--      io2_a_dst = iop_a_dst;
--    }
--  }
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -32288,1231 +33059,590 @@ wuffs_cbor__decoder__decode_tokens(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_tokens[0];
--  if (coro_susp_point) {
--    v_string_length = self->private_data.s_decode_tokens[0].v_string_length;
--    v_depth = self->private_data.s_decode_tokens[0].v_depth;
--    v_tagged = self->private_data.s_decode_tokens[0].v_tagged;
--    v_indefinite_string_major_type = self->private_data.s_decode_tokens[0].v_indefinite_string_major_type;
-+  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
-+  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
-+  if ((v_dst_bits_per_pixel & 7u) != 0u) {
-+    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+    goto exit;
-   }
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    if (self->private_impl.f_end_of_data) {
--      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--      goto ok;
-+  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
-+  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
-+  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048));
-+  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
-+  v_rle_state = self->private_impl.f_rle_state;
-+  label__outer__continue:;
-+  while (true) {
-+    v_row = wuffs_private_impl__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
-+    if (v_dst_bytes_per_row < ((uint64_t)(v_row.len))) {
-+      v_row = wuffs_base__slice_u8__subslice_j(v_row, v_dst_bytes_per_row);
-     }
--    label__outer__continue:;
-+    label__middle__continue:;
-     while (true) {
-+      v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
-+      if (v_i <= ((uint64_t)(v_row.len))) {
-+        v_dst = wuffs_base__slice_u8__subslice_i(v_row, v_i);
-+      } else {
-+        v_dst = wuffs_base__utility__empty_slice_u8();
-+      }
-       while (true) {
--        do {
--          if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 1u) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
--            goto label__outer__continue;
-+        if (v_rle_state == 0u) {
-+          if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
-+            break;
-           }
--          if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--            if (a_src && a_src->meta.closed) {
--              status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
-+          v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+          iop_a_src += 1u;
-+          if (v_code == 0u) {
-+            v_rle_state = 2u;
-+            continue;
-+          }
-+          self->private_impl.f_rle_length = ((uint32_t)(v_code));
-+          v_rle_state = 1u;
-+          continue;
-+        } else if (v_rle_state == 1u) {
-+          if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
-+            break;
-+          }
-+          v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+          iop_a_src += 1u;
-+          if (self->private_impl.f_bits_per_pixel == 8u) {
-+            v_p0 = 0u;
-+            while (v_p0 < self->private_impl.f_rle_length) {
-+              self->private_data.f_scratch[v_p0] = v_code;
-+              v_p0 += 1u;
-+            }
-+          } else {
-+            v_indexes[0u] = ((uint8_t)(((uint8_t)(v_code >> 4u))));
-+            v_indexes[1u] = ((uint8_t)(v_code & 15u));
-+            v_p0 = 0u;
-+            while (v_p0 < self->private_impl.f_rle_length) {
-+              self->private_data.f_scratch[(v_p0 + 0u)] = v_indexes[0u];
-+              self->private_data.f_scratch[(v_p0 + 1u)] = v_indexes[1u];
-+              v_p0 += 2u;
-+            }
-+          }
-+          wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, self->private_impl.f_rle_length));
-+          wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_x, self->private_impl.f_rle_length);
-+          v_rle_state = 0u;
-+          goto label__middle__continue;
-+        } else if (v_rle_state == 2u) {
-+          if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
-+            break;
-+          }
-+          v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+          iop_a_src += 1u;
-+          if (v_code < 2u) {
-+            if ((self->private_impl.f_dst_y >= self->private_impl.f_height) && (v_code == 0u)) {
-+              status = wuffs_base__make_status(wuffs_bmp__error__bad_rle_compression);
-               goto exit;
-             }
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
-+            wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_dst, v_dst_palette, 18446744073709551615u);
-+            self->private_impl.f_dst_x = 0u;
-+            self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
-+            if (v_code > 0u) {
-+              goto label__outer__break;
-+            }
-+            v_rle_state = 0u;
-             goto label__outer__continue;
-+          } else if (v_code == 2u) {
-+            v_rle_state = 4u;
-+            continue;
-           }
--          v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--          if ((v_indefinite_string_major_type != 0u) && (v_indefinite_string_major_type != (v_c >> 5u))) {
--            if (v_c != 255u) {
--              status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
--              goto exit;
-+          self->private_impl.f_rle_length = ((uint32_t)(v_code));
-+          self->private_impl.f_rle_padded = ((self->private_impl.f_bits_per_pixel == 8u) && (((uint8_t)(v_code & 1u)) != 0u));
-+          v_rle_state = 3u;
-+          continue;
-+        } else if (v_rle_state == 3u) {
-+          if (self->private_impl.f_bits_per_pixel == 8u) {
-+            v_n = wuffs_base__pixel_swizzler__limited_swizzle_u32_interleaved_from_reader(
-+                &self->private_impl.f_swizzler,
-+                self->private_impl.f_rle_length,
-+                v_dst,
-+                v_dst_palette,
-+                &iop_a_src,
-+                io2_a_src);
-+            wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
-+            wuffs_private_impl__u32__sat_sub_indirect(&self->private_impl.f_rle_length, ((uint32_t)(v_n)));
-+          } else {
-+            v_chunk_count = ((self->private_impl.f_rle_length + 3u) / 4u);
-+            v_p0 = 0u;
-+            while ((v_chunk_count > 0u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 2u)) {
-+              v_chunk_bits = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
-+              iop_a_src += 2u;
-+              self->private_data.f_scratch[(v_p0 + 0u)] = ((uint8_t)((15u & (v_chunk_bits >> 12u))));
-+              self->private_data.f_scratch[(v_p0 + 1u)] = ((uint8_t)((15u & (v_chunk_bits >> 8u))));
-+              self->private_data.f_scratch[(v_p0 + 2u)] = ((uint8_t)((15u & (v_chunk_bits >> 4u))));
-+              self->private_data.f_scratch[(v_p0 + 3u)] = ((uint8_t)((15u & (v_chunk_bits >> 0u))));
-+              v_p0 = ((v_p0 & 255u) + 4u);
-+              v_chunk_count -= 1u;
-             }
--            v_vminor = 4194560u;
--            if (v_indefinite_string_major_type == 3u) {
--              v_vminor |= 19u;
-+            v_p0 = wuffs_base__u32__min(v_p0, self->private_impl.f_rle_length);
-+            wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, v_p0));
-+            wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_x, v_p0);
-+            wuffs_private_impl__u32__sat_sub_indirect(&self->private_impl.f_rle_length, v_p0);
-+          }
-+          if (self->private_impl.f_rle_length > 0u) {
-+            break;
-+          }
-+          if (self->private_impl.f_rle_padded) {
-+            if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
-+              break;
-             }
--            v_indefinite_string_major_type = 0u;
-             iop_a_src += 1u;
--            *iop_a_dst++ = wuffs_base__make_token(
--                (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--            goto label__goto_parsed_a_leaf_value__break;
-+            self->private_impl.f_rle_padded = false;
-+          }
-+          v_rle_state = 0u;
-+          goto label__middle__continue;
-+        } else if (v_rle_state == 4u) {
-+          if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
-+            break;
-           }
-+          self->private_impl.f_rle_delta_x = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-           iop_a_src += 1u;
--          v_c_major = ((uint8_t)((v_c >> 5u)));
--          v_c_minor = (v_c & 31u);
--          if (v_c_minor < 24u) {
--            v_string_length = ((uint64_t)(v_c_minor));
--          } else {
--            while (true) {
--              if (v_c_minor == 24u) {
--                if (((uint64_t)(io2_a_src - iop_a_src)) >= 1u) {
--                  v_string_length = ((uint64_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src)));
--                  iop_a_src += 1u;
--                  break;
--                }
--              } else if (v_c_minor == 25u) {
--                if (((uint64_t)(io2_a_src - iop_a_src)) >= 2u) {
--                  v_string_length = ((uint64_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
--                  iop_a_src += 2u;
--                  break;
--                }
--              } else if (v_c_minor == 26u) {
--                if (((uint64_t)(io2_a_src - iop_a_src)) >= 4u) {
--                  v_string_length = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
--                  iop_a_src += 4u;
--                  break;
--                }
--              } else if (v_c_minor == 27u) {
--                if (((uint64_t)(io2_a_src - iop_a_src)) >= 8u) {
--                  v_string_length = wuffs_base__peek_u64be__no_bounds_check(iop_a_src);
--                  iop_a_src += 8u;
--                  break;
--                }
--              } else {
--                v_string_length = 0u;
--                break;
--              }
--              if (iop_a_src > io1_a_src) {
--                iop_a_src--;
--                if (a_src && a_src->meta.closed) {
--                  status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
--                  goto exit;
--                }
--                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
--                goto label__outer__continue;
--              }
--              status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_i_o);
--              goto exit;
--            }
-+          v_rle_state = 5u;
-+          continue;
-+        }
-+        if (((uint64_t)(io2_a_src - iop_a_src)) < 1u) {
-+          break;
-+        }
-+        v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+        iop_a_src += 1u;
-+        if (self->private_impl.f_rle_delta_x > 0u) {
-+          wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_dst, v_dst_palette, ((uint64_t)(self->private_impl.f_rle_delta_x)));
-+          wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(self->private_impl.f_rle_delta_x)));
-+          self->private_impl.f_rle_delta_x = 0u;
-+          if (self->private_impl.f_dst_x > self->private_impl.f_width) {
-+            status = wuffs_base__make_status(wuffs_bmp__error__bad_rle_compression);
-+            goto exit;
-           }
--          if (v_c_major == 0u) {
--            if (v_c_minor < 26u) {
--              *iop_a_dst++ = wuffs_base__make_token(
--                  (((uint64_t)((14680064u | ((uint32_t)((v_string_length & 65535u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--              goto label__goto_parsed_a_leaf_value__break;
--            } else if (v_c_minor < 28u) {
--              *iop_a_dst++ = wuffs_base__make_token(
--                  (((uint64_t)((14680064u | ((uint32_t)((v_string_length >> 46u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                  (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--              *iop_a_dst++ = wuffs_base__make_token(
--                  (~(v_string_length & 70368744177663u) << WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT) |
--                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--              goto label__goto_parsed_a_leaf_value__break;
--            }
--          } else if (v_c_major == 1u) {
--            if (v_c_minor < 26u) {
--              *iop_a_dst++ = wuffs_base__make_token(
--                  (((uint64_t)((12582912u | (2097151u - ((uint32_t)((v_string_length & 65535u))))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--              goto label__goto_parsed_a_leaf_value__break;
--            } else if (v_c_minor < 28u) {
--              if (v_string_length < 9223372036854775808u) {
--                *iop_a_dst++ = wuffs_base__make_token(
--                    (((uint64_t)((12582912u | (2097151u - ((uint32_t)((v_string_length >> 46u))))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                    (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                    (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                *iop_a_dst++ = wuffs_base__make_token(
--                    (~((18446744073709551615u - v_string_length) & 70368744177663u) << WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT) |
--                    (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--              } else {
--                *iop_a_dst++ = wuffs_base__make_token(
--                    (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
--                    (((uint64_t)(16777216u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                    (((uint64_t)(9u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--              }
--              goto label__goto_parsed_a_leaf_value__break;
--            }
--          } else if (v_c_major == 2u) {
--            if (v_c_minor < 28u) {
--              if (v_string_length == 0u) {
--                *iop_a_dst++ = wuffs_base__make_token(
--                    (((uint64_t)(4194560u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                    (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                goto label__goto_parsed_a_leaf_value__break;
--              }
--              *iop_a_dst++ = wuffs_base__make_token(
--                  (((uint64_t)(4194560u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--            } else if (v_c_minor == 31u) {
--              if (v_indefinite_string_major_type != 0u) {
--                break;
--              }
--              v_indefinite_string_major_type = 2u;
--              *iop_a_dst++ = wuffs_base__make_token(
--                  (((uint64_t)(4194560u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--              goto label__outer__continue;
--            } else {
--              break;
--            }
--            while (true) {
--              if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
--                continue;
--              }
--              v_n64 = wuffs_base__u64__min(v_string_length, ((uint64_t)(io2_a_src - iop_a_src)));
--              v_token_length = ((uint32_t)((v_n64 & 65535u)));
--              if (v_n64 > 65535u) {
--                v_token_length = 65535u;
--              } else if (v_token_length <= 0u) {
--                if (a_src && a_src->meta.closed) {
--                  status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
--                  goto exit;
--                }
--                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
--                continue;
--              }
--              if (((uint64_t)(io2_a_src - iop_a_src)) < ((uint64_t)(v_token_length))) {
--                status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_token_length);
--                goto exit;
--              }
--              v_string_length -= ((uint64_t)(v_token_length));
--              v_continued = 0u;
--              if ((v_string_length > 0u) || (v_indefinite_string_major_type > 0u)) {
--                v_continued = 1u;
--              }
--              iop_a_src += v_token_length;
--              *iop_a_dst++ = wuffs_base__make_token(
--                  (((uint64_t)(4194816u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                  (((uint64_t)(v_continued)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                  (((uint64_t)(v_token_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--              if (v_string_length > 0u) {
--                continue;
--              } else if (v_indefinite_string_major_type > 0u) {
--                goto label__outer__continue;
--              }
--              goto label__goto_parsed_a_leaf_value__break;
--            }
--          } else if (v_c_major == 3u) {
--            if (v_c_minor < 28u) {
--              if (v_string_length == 0u) {
--                *iop_a_dst++ = wuffs_base__make_token(
--                    (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                    (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                goto label__goto_parsed_a_leaf_value__break;
--              }
--              *iop_a_dst++ = wuffs_base__make_token(
--                  (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--            } else if (v_c_minor == 31u) {
--              if (v_indefinite_string_major_type != 0u) {
--                break;
--              }
--              v_indefinite_string_major_type = 3u;
--              *iop_a_dst++ = wuffs_base__make_token(
--                  (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--              goto label__outer__continue;
--            } else {
--              break;
--            }
--            while (true) {
--              if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
--                continue;
--              }
--              v_n64 = wuffs_base__u64__min(v_string_length, 65535u);
--              v_n64 = ((uint64_t)(wuffs_base__utf_8__longest_valid_prefix(iop_a_src,
--                  ((size_t)(wuffs_base__u64__min(((uint64_t)(io2_a_src - iop_a_src)), v_n64))))));
--              v_token_length = ((uint32_t)((v_n64 & 65535u)));
--              if (v_token_length <= 0u) {
--                if ((a_src && a_src->meta.closed) || (((uint64_t)(io2_a_src - iop_a_src)) >= 4u)) {
--                  status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
--                  goto exit;
--                }
--                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
--                continue;
--              }
--              if (((uint64_t)(io2_a_src - iop_a_src)) < ((uint64_t)(v_token_length))) {
--                status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_token_length);
--                goto exit;
--              }
--              v_string_length -= ((uint64_t)(v_token_length));
--              v_continued = 0u;
--              if ((v_string_length > 0u) || (v_indefinite_string_major_type > 0u)) {
--                v_continued = 1u;
--              }
--              iop_a_src += v_token_length;
--              *iop_a_dst++ = wuffs_base__make_token(
--                  (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                  (((uint64_t)(v_continued)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                  (((uint64_t)(v_token_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--              if (v_string_length > 0u) {
--                continue;
--              } else if (v_indefinite_string_major_type > 0u) {
--                goto label__outer__continue;
--              }
--              goto label__goto_parsed_a_leaf_value__break;
--            }
--          } else if (v_c_major == 4u) {
--            if (WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor] == 0u) {
--              break;
--            } else if (v_depth >= 1024u) {
--              v_token_length = ((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor]));
--              while ((v_token_length > 0u) && (iop_a_src > io1_a_src)) {
--                iop_a_src--;
--                v_token_length -= 1u;
--              }
--              status = wuffs_base__make_status(wuffs_cbor__error__unsupported_recursion_depth);
--              goto exit;
--            }
--            v_vminor = 2105361u;
--            v_vminor_alt = 2101282u;
--            if (v_depth > 0u) {
--              v_stack_byte = ((v_depth - 1u) / 16u);
--              v_stack_bit = (((v_depth - 1u) & 15u) * 2u);
--              if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
--                v_vminor = 2105377u;
--                v_vminor_alt = 2105378u;
--              } else {
--                v_vminor = 2105409u;
--                v_vminor_alt = 2113570u;
--              }
--            }
--            *iop_a_dst++ = wuffs_base__make_token(
--                (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--            if (v_c_minor == 0u) {
--              *iop_a_dst++ = wuffs_base__make_token(
--                  (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                  (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--              goto label__goto_parsed_a_leaf_value__break;
--            }
--            v_stack_byte = (v_depth / 16u);
--            v_stack_bit = ((v_depth & 15u) * 2u);
--            self->private_data.f_stack[v_stack_byte] &= (4294967295u ^ (((uint32_t)(3u)) << v_stack_bit));
--            self->private_data.f_container_num_remaining[v_depth] = v_string_length;
--            v_depth += 1u;
--            v_tagged = false;
--            goto label__outer__continue;
--          } else if (v_c_major == 5u) {
--            if (WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor] == 0u) {
--              break;
--            } else if (v_depth >= 1024u) {
--              v_token_length = ((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor]));
--              while ((v_token_length > 0u) && (iop_a_src > io1_a_src)) {
--                iop_a_src--;
--                v_token_length -= 1u;
--              }
--              status = wuffs_base__make_status(wuffs_cbor__error__unsupported_recursion_depth);
-+        }
-+        if (v_code > 0u) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+          v_code -= 1u;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+          while (true) {
-+            self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
-+            if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
-+              status = wuffs_base__make_status(wuffs_bmp__error__bad_rle_compression);
-               goto exit;
-             }
--            v_vminor = 2113553u;
--            v_vminor_alt = 2101314u;
--            if (v_depth > 0u) {
--              v_stack_byte = ((v_depth - 1u) / 16u);
--              v_stack_bit = (((v_depth - 1u) & 15u) * 2u);
--              if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
--                v_vminor = 2113569u;
--                v_vminor_alt = 2105410u;
--              } else {
--                v_vminor = 2113601u;
--                v_vminor_alt = 2113602u;
--              }
--            }
--            *iop_a_dst++ = wuffs_base__make_token(
--                (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--            if (v_c_minor == 0u) {
--              *iop_a_dst++ = wuffs_base__make_token(
--                  (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                  (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--              goto label__goto_parsed_a_leaf_value__break;
-+            v_row = wuffs_private_impl__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
-+            if (v_dst_bytes_per_row < ((uint64_t)(v_row.len))) {
-+              v_row = wuffs_base__slice_u8__subslice_j(v_row, v_dst_bytes_per_row);
-             }
--            v_stack_byte = (v_depth / 16u);
--            v_stack_bit = ((v_depth & 15u) * 2u);
--            self->private_data.f_stack[v_stack_byte] |= (((uint32_t)(3u)) << v_stack_bit);
--            self->private_data.f_container_num_remaining[v_depth] = v_string_length;
--            v_depth += 1u;
--            v_tagged = false;
--            goto label__outer__continue;
--          } else if (v_c_major == 6u) {
--            if (v_c_minor >= 28u) {
-+            if (v_code <= 0u) {
-+              wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_row, v_dst_palette, ((uint64_t)(self->private_impl.f_dst_x)));
-               break;
-             }
--            if (v_string_length < 262144u) {
--              *iop_a_dst++ = wuffs_base__make_token(
--                  (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
--                  (((uint64_t)((4194304u | ((uint32_t)(v_string_length))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--            } else {
--              *iop_a_dst++ = wuffs_base__make_token(
--                  (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
--                  (((uint64_t)((4194304u | ((uint32_t)((v_string_length >> 46u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                  (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--              *iop_a_dst++ = wuffs_base__make_token(
--                  (~(v_string_length & 70368744177663u) << WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT) |
--                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--            }
--            v_tagged = true;
--            goto label__outer__continue;
--          } else if (v_c_major == 7u) {
--            if (v_c_minor < 20u) {
--              *iop_a_dst++ = wuffs_base__make_token(
--                  (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
--                  (((uint64_t)((8388608u | ((uint32_t)((v_string_length & 255u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--              goto label__goto_parsed_a_leaf_value__break;
--            } else if (v_c_minor < 24u) {
--              *iop_a_dst++ = wuffs_base__make_token(
--                  (((uint64_t)(WUFFS_CBOR__LITERALS[(v_c_minor & 3u)])) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--              goto label__goto_parsed_a_leaf_value__break;
--            } else if (v_c_minor == 24u) {
--              if (v_string_length < 24u) {
--                if ( ! (iop_a_src > io1_a_src)) {
--                  status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_i_o);
--                  goto exit;
--                }
--                iop_a_src--;
--                break;
--              }
--              *iop_a_dst++ = wuffs_base__make_token(
--                  (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
--                  (((uint64_t)((8388608u | ((uint32_t)((v_string_length & 255u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                  (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--              goto label__goto_parsed_a_leaf_value__break;
--            } else if (v_c_minor < 28u) {
--              *iop_a_dst++ = wuffs_base__make_token(
--                  (((uint64_t)(10490113u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--              goto label__goto_parsed_a_leaf_value__break;
--            } else if (v_c_minor == 31u) {
--              if (v_tagged || (v_depth <= 0u)) {
--                break;
--              }
--              v_depth -= 1u;
--              if (self->private_data.f_container_num_remaining[v_depth] != 0u) {
--                break;
--              }
--              v_stack_byte = (v_depth / 16u);
--              v_stack_bit = ((v_depth & 15u) * 2u);
--              v_stack_val = (3u & (self->private_data.f_stack[v_stack_byte] >> v_stack_bit));
--              if (v_stack_val == 1u) {
--                break;
--              }
--              if (v_stack_val != 3u) {
--                v_vminor_alt = 2097186u;
--              } else {
--                v_vminor_alt = 2097218u;
--              }
--              if (v_depth <= 0u) {
--                v_vminor_alt |= 4096u;
--              } else {
--                v_stack_byte = ((v_depth - 1u) / 16u);
--                v_stack_bit = (((v_depth - 1u) & 15u) * 2u);
--                if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
--                  v_vminor_alt |= 8192u;
--                } else {
--                  v_vminor_alt |= 16384u;
--                }
--              }
--              *iop_a_dst++ = wuffs_base__make_token(
--                  (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--              goto label__goto_parsed_a_leaf_value__break;
--            }
--          }
--        } while (0);
--        if (iop_a_src > io1_a_src) {
--          iop_a_src--;
--          status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
--          goto exit;
--        }
--        status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_i_o);
--        goto exit;
--      }
--      label__goto_parsed_a_leaf_value__break:;
--      v_tagged = false;
--      while (v_depth > 0u) {
--        v_stack_byte = ((v_depth - 1u) / 16u);
--        v_stack_bit = (((v_depth - 1u) & 15u) * 2u);
--        self->private_data.f_stack[v_stack_byte] ^= (((uint32_t)(1u)) << (v_stack_bit + 1u));
--        if (1u == (3u & (self->private_data.f_stack[v_stack_byte] >> v_stack_bit))) {
--          goto label__outer__continue;
--        }
--        if (self->private_data.f_container_num_remaining[(v_depth - 1u)] <= 0u) {
--          goto label__outer__continue;
--        }
--        self->private_data.f_container_num_remaining[(v_depth - 1u)] -= 1u;
--        if (self->private_data.f_container_num_remaining[(v_depth - 1u)] > 0u) {
--          goto label__outer__continue;
--        }
--        while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
--          continue;
--        }
--        v_depth -= 1u;
--        v_stack_byte = (v_depth / 16u);
--        v_stack_bit = ((v_depth & 15u) * 2u);
--        if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
--          v_vminor_alt = 2097186u;
--        } else {
--          v_vminor_alt = 2097218u;
--        }
--        if (v_depth <= 0u) {
--          v_vminor_alt |= 4096u;
--        } else {
--          v_stack_byte = ((v_depth - 1u) / 16u);
--          v_stack_bit = (((v_depth - 1u) & 15u) * 2u);
--          if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
--            v_vminor_alt |= 8192u;
--          } else {
--            v_vminor_alt |= 16384u;
-+            wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_row, v_dst_palette, 18446744073709551615u);
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+            v_code -= 1u;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-           }
-         }
--        *iop_a_dst++ = wuffs_base__make_token(
--            (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--            (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+        v_rle_state = 0u;
-+        goto label__middle__continue;
-       }
--      break;
-+      self->private_impl.f_rle_state = v_rle_state;
-+      status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
-+      goto ok;
-     }
--    self->private_impl.f_end_of_data = true;
--
--    ok:
--    self->private_impl.p_decode_tokens[0] = 0;
--    goto exit;
-   }
-+  label__outer__break:;
-+  while (self->private_impl.f_dst_y < self->private_impl.f_height) {
-+    v_row = wuffs_private_impl__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
-+    if (v_dst_bytes_per_row < ((uint64_t)(v_row.len))) {
-+      v_row = wuffs_base__slice_u8__subslice_j(v_row, v_dst_bytes_per_row);
-+    }
-+    wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_row, v_dst_palette, 18446744073709551615u);
-+    self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
-+  }
-+  status = wuffs_base__make_status(NULL);
-+  goto ok;
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_tokens[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
--  self->private_data.s_decode_tokens[0].v_string_length = v_string_length;
--  self->private_data.s_decode_tokens[0].v_depth = v_depth;
--  self->private_data.s_decode_tokens[0].v_tagged = v_tagged;
--  self->private_data.s_decode_tokens[0].v_indefinite_string_major_type = v_indefinite_string_major_type;
--
-+  ok:
-   goto exit;
-   exit:
--  if (a_dst && a_dst->data.ptr) {
--    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--  }
-   if (a_src && a_src->data.ptr) {
-     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
- 
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--  }
-   return status;
- }
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CBOR)
--
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC32)
-+// -------- func bmp.decoder.swizzle_bitfields
- 
--// ---------------- Status Codes Implementations
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_bmp__decoder__swizzle_bitfields(
-+    wuffs_bmp__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--// ---------------- Private Consts
-+  wuffs_base__pixel_format v_dst_pixfmt = {0};
-+  uint32_t v_dst_bits_per_pixel = 0;
-+  uint32_t v_dst_bytes_per_pixel = 0;
-+  uint64_t v_dst_bytes_per_row = 0;
-+  wuffs_base__slice_u8 v_dst_palette = {0};
-+  wuffs_base__table_u8 v_tab = {0};
-+  wuffs_base__slice_u8 v_dst = {0};
-+  uint64_t v_i = 0;
-+  uint64_t v_n = 0;
-+  uint32_t v_p0 = 0;
-+  uint32_t v_p1 = 0;
-+  uint32_t v_p1_temp = 0;
-+  uint32_t v_num_bits = 0;
-+  uint32_t v_c = 0;
-+  uint32_t v_c32 = 0;
-+  uint32_t v_channel = 0;
- 
--static const uint32_t
--WUFFS_CRC32__IEEE_TABLE[16][256] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  {
--    0, 1996959894, 3993919788, 2567524794, 124634137, 1886057615, 3915621685, 2657392035,
--    249268274, 2044508324, 3772115230, 2547177864, 162941995, 2125561021, 3887607047, 2428444049,
--    498536548, 1789927666, 4089016648, 2227061214, 450548861, 1843258603, 4107580753, 2211677639,
--    325883990, 1684777152, 4251122042, 2321926636, 335633487, 1661365465, 4195302755, 2366115317,
--    997073096, 1281953886, 3579855332, 2724688242, 1006888145, 1258607687, 3524101629, 2768942443,
--    901097722, 1119000684, 3686517206, 2898065728, 853044451, 1172266101, 3705015759, 2882616665,
--    651767980, 1373503546, 3369554304, 3218104598, 565507253, 1454621731, 3485111705, 3099436303,
--    671266974, 1594198024, 3322730930, 2970347812, 795835527, 1483230225, 3244367275, 3060149565,
--    1994146192, 31158534, 2563907772, 4023717930, 1907459465, 112637215, 2680153253, 3904427059,
--    2013776290, 251722036, 2517215374, 3775830040, 2137656763, 141376813, 2439277719, 3865271297,
--    1802195444, 476864866, 2238001368, 4066508878, 1812370925, 453092731, 2181625025, 4111451223,
--    1706088902, 314042704, 2344532202, 4240017532, 1658658271, 366619977, 2362670323, 4224994405,
--    1303535960, 984961486, 2747007092, 3569037538, 1256170817, 1037604311, 2765210733, 3554079995,
--    1131014506, 879679996, 2909243462, 3663771856, 1141124467, 855842277, 2852801631, 3708648649,
--    1342533948, 654459306, 3188396048, 3373015174, 1466479909, 544179635, 3110523913, 3462522015,
--    1591671054, 702138776, 2966460450, 3352799412, 1504918807, 783551873, 3082640443, 3233442989,
--    3988292384, 2596254646, 62317068, 1957810842, 3939845945, 2647816111, 81470997, 1943803523,
--    3814918930, 2489596804, 225274430, 2053790376, 3826175755, 2466906013, 167816743, 2097651377,
--    4027552580, 2265490386, 503444072, 1762050814, 4150417245, 2154129355, 426522225, 1852507879,
--    4275313526, 2312317920, 282753626, 1742555852, 4189708143, 2394877945, 397917763, 1622183637,
--    3604390888, 2714866558, 953729732, 1340076626, 3518719985, 2797360999, 1068828381, 1219638859,
--    3624741850, 2936675148, 906185462, 1090812512, 3747672003, 2825379669, 829329135, 1181335161,
--    3412177804, 3160834842, 628085408, 1382605366, 3423369109, 3138078467, 570562233, 1426400815,
--    3317316542, 2998733608, 733239954, 1555261956, 3268935591, 3050360625, 752459403, 1541320221,
--    2607071920, 3965973030, 1969922972, 40735498, 2617837225, 3943577151, 1913087877, 83908371,
--    2512341634, 3803740692, 2075208622, 213261112, 2463272603, 3855990285, 2094854071, 198958881,
--    2262029012, 4057260610, 1759359992, 534414190, 2176718541, 4139329115, 1873836001, 414664567,
--    2282248934, 4279200368, 1711684554, 285281116, 2405801727, 4167216745, 1634467795, 376229701,
--    2685067896, 3608007406, 1308918612, 956543938, 2808555105, 3495958263, 1231636301, 1047427035,
--    2932959818, 3654703836, 1088359270, 936918000, 2847714899, 3736837829, 1202900863, 817233897,
--    3183342108, 3401237130, 1404277552, 615818150, 3134207493, 3453421203, 1423857449, 601450431,
--    3009837614, 3294710456, 1567103746, 711928724, 3020668471, 3272380065, 1510334235, 755167117,
--  }, {
--    0, 421212481, 842424962, 724390851, 1684849924, 2105013317, 1448781702, 1329698503,
--    3369699848, 3519200073, 4210026634, 3824474571, 2897563404, 3048111693, 2659397006, 2274893007,
--    1254232657, 1406739216, 2029285587, 1643069842, 783210325, 934667796, 479770071, 92505238,
--    2182846553, 2600511768, 2955803355, 2838940570, 3866582365, 4285295644, 3561045983, 3445231262,
--    2508465314, 2359236067, 2813478432, 3198777185, 4058571174, 3908292839, 3286139684, 3670389349,
--    1566420650, 1145479147, 1869335592, 1987116393, 959540142, 539646703, 185010476, 303839341,
--    3745920755, 3327985586, 3983561841, 4100678960, 3140154359, 2721170102, 2300350837, 2416418868,
--    396344571, 243568058, 631889529, 1018359608, 1945336319, 1793607870, 1103436669, 1490954812,
--    4034481925, 3915546180, 3259968903, 3679722694, 2484439553, 2366552896, 2787371139, 3208174018,
--    950060301, 565965900, 177645455, 328046286, 1556873225, 1171730760, 1861902987, 2011255754,
--    3132841300, 2745199637, 2290958294, 2442530455, 3738671184, 3352078609, 3974232786, 4126854035,
--    1919080284, 1803150877, 1079293406, 1498383519, 370020952, 253043481, 607678682, 1025720731,
--    1711106983, 2095471334, 1472923941, 1322268772, 26324643, 411738082, 866634785, 717028704,
--    2904875439, 3024081134, 2668790573, 2248782444, 3376948395, 3495106026, 4219356713, 3798300520,
--    792689142, 908347575, 487136116, 68299317, 1263779058, 1380486579, 2036719216, 1618931505,
--    3890672638, 4278043327, 3587215740, 3435896893, 2206873338, 2593195963, 2981909624, 2829542713,
--    998479947, 580430090, 162921161, 279890824, 1609522511, 1190423566, 1842954189, 1958874764,
--    4082766403, 3930137346, 3245109441, 3631694208, 2536953671, 2385372678, 2768287173, 3155920004,
--    1900120602, 1750776667, 1131931800, 1517083097, 355290910, 204897887, 656092572, 1040194781,
--    3113746450, 2692952403, 2343461520, 2461357009, 3723805974, 3304059991, 4022511508, 4141455061,
--    2919742697, 3072101800, 2620513899, 2234183466, 3396041197, 3547351212, 4166851439, 3779471918,
--    1725839073, 2143618976, 1424512099, 1307796770, 45282277, 464110244, 813994343, 698327078,
--    3838160568, 4259225593, 3606301754, 3488152955, 2158586812, 2578602749, 2996767038, 2877569151,
--    740041904, 889656817, 506086962, 120682355, 1215357364, 1366020341, 2051441462, 1667084919,
--    3422213966, 3538019855, 4190942668, 3772220557, 2945847882, 3062702859, 2644537544, 2226864521,
--    52649286, 439905287, 823476164, 672009861, 1733269570, 2119477507, 1434057408, 1281543041,
--    2167981343, 2552493150, 3004082077, 2853541596, 3847487515, 4233048410, 3613549209, 3464057816,
--    1239502615, 1358593622, 2077699477, 1657543892, 764250643, 882293586, 532408465, 111204816,
--    1585378284, 1197851309, 1816695150, 1968414767, 974272232, 587794345, 136598634, 289367339,
--    2527558116, 2411481253, 2760973158, 3179948583, 4073438432, 3956313505, 3237863010, 3655790371,
--    347922877, 229101820, 646611775, 1066513022, 1892689081, 1774917112, 1122387515, 1543337850,
--    3697634229, 3313392372, 3998419255, 4148705398, 3087642289, 2702352368, 2319436851, 2468674930,
--  }, {
--    0, 29518391, 59036782, 38190681, 118073564, 114017003, 76381362, 89069189,
--    236147128, 265370511, 228034006, 206958561, 152762724, 148411219, 178138378, 190596925,
--    472294256, 501532999, 530741022, 509615401, 456068012, 451764635, 413917122, 426358261,
--    305525448, 334993663, 296822438, 275991697, 356276756, 352202787, 381193850, 393929805,
--    944588512, 965684439, 1003065998, 973863097, 1061482044, 1049003019, 1019230802, 1023561829,
--    912136024, 933002607, 903529270, 874031361, 827834244, 815125939, 852716522, 856752605,
--    611050896, 631869351, 669987326, 640506825, 593644876, 580921211, 551983394, 556069653,
--    712553512, 733666847, 704405574, 675154545, 762387700, 749958851, 787859610, 792175277,
--    1889177024, 1901651959, 1931368878, 1927033753, 2006131996, 1985040171, 1947726194, 1976933189,
--    2122964088, 2135668303, 2098006038, 2093965857, 2038461604, 2017599123, 2047123658, 2076625661,
--    1824272048, 1836991623, 1866005214, 1861914857, 1807058540, 1786244187, 1748062722, 1777547317,
--    1655668488, 1668093247, 1630251878, 1625932113, 1705433044, 1684323811, 1713505210, 1742760333,
--    1222101792, 1226154263, 1263738702, 1251046777, 1339974652, 1310460363, 1281013650, 1301863845,
--    1187289752, 1191637167, 1161842422, 1149379777, 1103966788, 1074747507, 1112139306, 1133218845,
--    1425107024, 1429406311, 1467333694, 1454888457, 1408811148, 1379576507, 1350309090, 1371438805,
--    1524775400, 1528845279, 1499917702, 1487177649, 1575719220, 1546255107, 1584350554, 1605185389,
--    3778354048, 3774312887, 3803303918, 3816007129, 3862737756, 3892238699, 3854067506, 3833203973,
--    4012263992, 4007927823, 3970080342, 3982554209, 3895452388, 3924658387, 3953866378, 3932773565,
--    4245928176, 4241609415, 4271336606, 4283762345, 4196012076, 4225268251, 4187931714, 4166823541,
--    4076923208, 4072833919, 4035198246, 4047918865, 4094247316, 4123732899, 4153251322, 4132437965,
--    3648544096, 3636082519, 3673983246, 3678331705, 3732010428, 3753090955, 3723829714, 3694611429,
--    3614117080, 3601426159, 3572488374, 3576541825, 3496125444, 3516976691, 3555094634, 3525581405,
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--    2535537225, 170842943, 1984954084, 3946848146, 2391651666, 327308324, 1877176831, 4075589769,
--    263086283, 2460058045, 4005602406, 1942963472, 369291216, 2332888742, 4151061373, 1784924683,
--    1022852861, 2717425547, 3717839440, 1083595558, 626782694, 3092517008, 3291821387, 1497027645,
--    1763466407, 4094934481, 2289211402, 360544636, 1890636732, 3988730570, 2447251217, 215086695,
--    1514488465, 3343557607, 3140191804, 639919946, 1139395978, 3739626748, 2726758695, 1065936977,
--  }, {
--    0, 3120290792, 2827399569, 293431929, 2323408227, 864534155, 586863858, 2600537882,
--    3481914503, 1987188591, 1729068310, 3740575486, 1173727716, 4228805132, 3983743093, 1418249117,
--    1147313999, 4254680231, 3974377182, 1428157750, 3458136620, 2011505092, 1721256893, 3747844181,
--    2347455432, 839944224, 594403929, 2593536433, 26687147, 3094146371, 2836498234, 283794642,
--    2294627998, 826205558, 541298447, 2578994407, 45702141, 3141697557, 2856315500, 331624836,
--    1196225049, 4273416689, 4023010184, 1446090848, 3442513786, 1959480466, 1706436331, 3696098563,
--    3433538001, 1968994873, 1679888448, 3722103720, 1188807858, 4280295258, 3999102243, 1470541515,
--    53374294, 3134568126, 2879970503, 307431215, 2303854645, 816436189, 567589284, 2553242188,
--    3405478781, 1929420949, 1652411116, 3682996484, 1082596894, 4185703926, 3892424591, 1375368295,
--    91404282, 3163122706, 2918450795, 336584067, 2400113305, 922028401, 663249672, 2658384096,
--    2392450098, 929185754, 639587747, 2682555979, 82149713, 3172883129, 2892181696, 362343208,
--    1091578037, 4176212829, 3918960932, 1349337804, 3412872662, 1922537022, 1676344391, 3658557359,
--    1111377379, 4224032267, 3937989746, 1396912026, 3359776896, 1908013928, 1623494929, 3644803833,
--    2377615716, 877417100, 623982837, 2630542109, 130804743, 3190831087, 2941083030, 381060734,
--    106748588, 3215393092, 2933549885, 388083925, 2350956495, 903570471, 614862430, 2640172470,
--    3386185259, 1882115523, 1632872378, 3634920530, 1135178568, 4199721120, 3945775833, 1389631793,
--    1317531835, 4152109907, 3858841898, 1610259138, 3304822232, 2097172016, 1820140617, 3582394273,
--    2165193788, 955639764, 696815021, 2423477829, 192043359, 2995356343, 2750736590, 437203750,
--    182808564, 3005133852, 2724453989, 462947725, 2157513367, 962777471, 673168134, 2447663342,
--    3312231283, 2090301595, 1844056802, 3557935370, 1326499344, 4142603768, 3885397889, 1584245865,
--    3326266917, 2142836173, 1858371508, 3611272284, 1279175494, 4123357358, 3837270743, 1564721471,
--    164299426, 2955991370, 2706223923, 414607579, 2209834945, 978107433, 724686416, 2462715320,
--    2183156074, 1004243586, 715579643, 2472360723, 140260361, 2980573153, 2698675608, 421617264,
--    1302961645, 4099032581, 3845074044, 1557460884, 3352688782, 2116952934, 1867729183, 3601371895,
--    2222754758, 1032278062, 754596439, 2499928511, 234942117, 3086693709, 2793824052, 528319708,
--    1274365761, 4061043881, 3816027856, 1518873912, 3246989858, 2020800970, 1762628531, 3505670235,
--    3223196809, 2045103969, 1754834200, 3512958704, 1247965674, 4086934018, 3806642299, 1528765331,
--    261609486, 3060532198, 2802936223, 518697591, 2246819181, 1007707781, 762121468, 2492913428,
--    213497176, 3041029808, 2755593417, 499441441, 2261110843, 1061030867, 776167850, 2545465922,
--    3274734047, 2060165687, 1807140942, 3528266662, 1229724860, 4038575956, 3788156205, 1479636677,
--    1222322711, 4045468159, 3764231046, 1504067694, 3265744756, 2069664924, 1780612837, 3554288909,
--    2270357136, 1051278712, 802445057, 2519698665, 221152243, 3033880603, 2779263586, 475261322,
--  }, {
--    0, 2926088593, 2275419491, 701019378, 3560000647, 2052709654, 1402038756, 4261017717,
--    1930665807, 3715829470, 4105419308, 1524313021, 2804077512, 155861593, 545453739, 2397726522,
--    3861331614, 1213181711, 1636244477, 3488582252, 840331801, 2625561480, 3048626042, 467584747,
--    2503254481, 995897408, 311723186, 3170637091, 1090907478, 4016929991, 3332753461, 1758288292,
--    390036349, 3109546732, 2426363422, 1056427919, 3272488954, 1835443819, 1152258713, 3938878216,
--    1680663602, 3393484195, 3817652561, 1306808512, 2954733749, 510998820, 935169494, 2580880455,
--    4044899811, 1601229938, 1991794816, 3637571857, 623446372, 2336332021, 2726898695, 216120726,
--    2181814956, 744704829, 95158223, 2881711710, 1446680107, 4166125498, 3516576584, 2146575065,
--    780072698, 2148951915, 2849952665, 129384968, 4199529085, 1411853292, 2112855838, 3548843663,
--    1567451573, 4077254692, 3670887638, 1957027143, 2304517426, 657765539, 251396177, 2694091200,
--    3361327204, 1714510325, 1341779207, 3784408214, 476611811, 2986349938, 2613617024, 899690513,
--    3142211371, 354600634, 1021997640, 2458051545, 1870338988, 3239283261, 3906682575, 1186180958,
--    960597383, 2536053782, 3202459876, 277428597, 3983589632, 1125666961, 1792074851, 3300423154,
--    1246892744, 3829039961, 3455203243, 1671079482, 2657312335, 806080478, 432241452, 3081497277,
--    3748049689, 1896751752, 1489409658, 4138600427, 190316446, 2772397583, 2365053693, 580864876,
--    2893360214, 35503559, 735381813, 2243795108, 2017747153, 3593269568, 4293150130, 1368183843,
--    1560145396, 4069882981, 3680356503, 1966430470, 2295112051, 648294626, 258769936, 2701399425,
--    804156091, 2173100842, 2823706584, 103204425, 4225711676, 1438101421, 2088704863, 3524758222,
--    3134903146, 347226875, 1031468553, 2467456920, 1860935661, 3229814396, 3914054286, 1193487135,
--    3385412645, 1738661300, 1315531078, 3758225623, 502792354, 3012596019, 2589468097, 875607120,
--    1271043721, 3853125400, 3429020650, 1644831355, 2683558414, 832261023, 408158061, 3057348348,
--    953223622, 2528745559, 3211865253, 286899508, 3974120769, 1116263632, 1799381026, 3307794867,
--    2917509143, 59586950, 709201268, 2217549029, 2043995280, 3619452161, 4269064691, 1344032866,
--    3740677976, 1889445577, 1498812987, 4148069290, 180845535, 2762992206, 2372361916, 588238637,
--    1921194766, 3706423967, 4112727661, 1531686908, 2796705673, 148555288, 554857194, 2407195515,
--    26248257, 2952271312, 2251333922, 676868275, 3584149702, 2076793175, 1375858085, 4234771508,
--    2493785488, 986493953, 319029491, 3178008930, 1083533591, 4009621638, 3342158964, 1767759333,
--    3887577823, 1239362382, 1612160956, 3464433197, 864482904, 2649647049, 3022443323, 441336490,
--    1706844275, 3419730402, 3793503504, 1282724993, 2978819316, 535149925, 908921239, 2554697734,
--    380632892, 3100077741, 2433735263, 1063734222, 3265180603, 1828069930, 1161729752, 3948283721,
--    2207997677, 770953084, 71007118, 2857626143, 1470763626, 4190274555, 3490330377, 2120394392,
--    4035494306, 1591758899, 1999168705, 3644880208, 616140069, 2328960180, 2736367686, 225524183,
--  },
--};
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
- 
--static const uint8_t
--WUFFS_CRC32__IEEE_X86_SSE42_K1K2[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  212, 43, 68, 84, 1, 0, 0, 0,
--  150, 21, 228, 198, 1, 0, 0, 0,
--};
--
--static const uint8_t
--WUFFS_CRC32__IEEE_X86_SSE42_K3K4[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  208, 151, 25, 117, 1, 0, 0, 0,
--  158, 0, 170, 204, 0, 0, 0, 0,
--};
--
--static const uint8_t
--WUFFS_CRC32__IEEE_X86_SSE42_K5ZZ[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  36, 97, 205, 99, 1, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--};
--
--static const uint8_t
--WUFFS_CRC32__IEEE_X86_SSE42_PXMU[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  65, 6, 113, 219, 1, 0, 0, 0,
--  65, 22, 1, 247, 1, 0, 0, 0,
--};
--
--// ---------------- Private Initializer Prototypes
--
--// ---------------- Private Function Prototypes
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_crc32__ieee_hasher__up(
--    wuffs_crc32__ieee_hasher* self,
--    wuffs_base__slice_u8 a_x);
-+  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
-+  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
-+  if ((v_dst_bits_per_pixel & 7u) != 0u) {
-+    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+    goto exit;
-+  }
-+  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
-+  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
-+  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048));
-+  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
-+  label__outer__continue:;
-+  while (true) {
-+    while (self->private_impl.f_pending_pad > 0u) {
-+      if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+        status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
-+        goto ok;
-+      }
-+      self->private_impl.f_pending_pad -= 1u;
-+      iop_a_src += 1u;
-+    }
-+    while (true) {
-+      if (self->private_impl.f_dst_x == self->private_impl.f_width) {
-+        self->private_impl.f_dst_x = 0u;
-+        self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
-+        if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
-+          if (self->private_impl.f_height > 0u) {
-+            self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row;
-+          }
-+          goto label__outer__break;
-+        } else if (self->private_impl.f_pad_per_row != 0u) {
-+          self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row;
-+          goto label__outer__continue;
-+        }
-+      }
-+      v_p1_temp = ((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x));
-+      v_p1 = wuffs_base__u32__min(v_p1_temp, 256u);
-+      v_p0 = 0u;
-+      while (v_p0 < v_p1) {
-+        if (self->private_impl.f_bits_per_pixel == 16u) {
-+          if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
-+            break;
-+          }
-+          v_c32 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-+          iop_a_src += 2u;
-+        } else {
-+          if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
-+            break;
-+          }
-+          v_c32 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+          iop_a_src += 4u;
-+        }
-+        v_channel = 0u;
-+        while (v_channel < 4u) {
-+          if (self->private_impl.f_channel_num_bits[v_channel] == 0u) {
-+            self->private_data.f_scratch[((8u * v_p0) + (2u * v_channel) + 0u)] = 255u;
-+            self->private_data.f_scratch[((8u * v_p0) + (2u * v_channel) + 1u)] = 255u;
-+          } else {
-+            v_c = ((v_c32 & self->private_impl.f_channel_masks[v_channel]) >> self->private_impl.f_channel_shifts[v_channel]);
-+            v_num_bits = ((uint32_t)(self->private_impl.f_channel_num_bits[v_channel]));
-+            while (v_num_bits < 16u) {
-+              v_c |= ((uint32_t)(v_c << v_num_bits));
-+              v_num_bits *= 2u;
-+            }
-+            v_c >>= (v_num_bits - 16u);
-+            self->private_data.f_scratch[((8u * v_p0) + (2u * v_channel) + 0u)] = ((uint8_t)((v_c >> 0u)));
-+            self->private_data.f_scratch[((8u * v_p0) + (2u * v_channel) + 1u)] = ((uint8_t)((v_c >> 8u)));
-+          }
-+          v_channel += 1u;
-+        }
-+        v_p0 += 1u;
-+      }
-+      v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
-+      if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
-+        v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
-+      }
-+      v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
-+      if (v_i >= ((uint64_t)(v_dst.len))) {
-+        v_n = ((uint64_t)(v_p0));
-+      } else {
-+        v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, (8u * v_p0)));
-+      }
-+      if (v_n == 0u) {
-+        status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
-+        goto ok;
-+      }
-+      wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
-+    }
-+  }
-+  label__outer__break:;
-+  status = wuffs_base__make_status(NULL);
-+  goto ok;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_crc32__ieee_hasher__up__choosy_default(
--    wuffs_crc32__ieee_hasher* self,
--    wuffs_base__slice_u8 a_x);
-+  ok:
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
- 
--#if defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32)
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_crc32__ieee_hasher__up_arm_crc32(
--    wuffs_crc32__ieee_hasher* self,
--    wuffs_base__slice_u8 a_x);
--#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32)
-+  return status;
-+}
- 
--#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_crc32__ieee_hasher__up_x86_avx2(
--    wuffs_crc32__ieee_hasher* self,
--    wuffs_base__slice_u8 a_x);
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_64)
-+// -------- func bmp.decoder.swizzle_low_bit_depth
- 
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_crc32__ieee_hasher__up_x86_sse42(
--    wuffs_crc32__ieee_hasher* self,
--    wuffs_base__slice_u8 a_x);
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--
--// ---------------- VTables
--
--const wuffs_base__hasher_u32__func_ptrs
--wuffs_crc32__ieee_hasher__func_ptrs_for__wuffs_base__hasher_u32 = {
--  (uint32_t(*)(const void*))(&wuffs_crc32__ieee_hasher__checksum_u32),
--  (uint64_t(*)(const void*,
--      uint32_t))(&wuffs_crc32__ieee_hasher__get_quirk),
--  (wuffs_base__status(*)(void*,
--      uint32_t,
--      uint64_t))(&wuffs_crc32__ieee_hasher__set_quirk),
--  (wuffs_base__empty_struct(*)(void*,
--      wuffs_base__slice_u8))(&wuffs_crc32__ieee_hasher__update),
--  (uint32_t(*)(void*,
--      wuffs_base__slice_u8))(&wuffs_crc32__ieee_hasher__update_u32),
--};
-+static wuffs_base__status
-+wuffs_bmp__decoder__swizzle_low_bit_depth(
-+    wuffs_bmp__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--// ---------------- Initializer Implementations
-+  wuffs_base__pixel_format v_dst_pixfmt = {0};
-+  uint32_t v_dst_bits_per_pixel = 0;
-+  uint32_t v_dst_bytes_per_pixel = 0;
-+  uint64_t v_dst_bytes_per_row = 0;
-+  wuffs_base__slice_u8 v_dst_palette = {0};
-+  wuffs_base__table_u8 v_tab = {0};
-+  wuffs_base__slice_u8 v_dst = {0};
-+  uint64_t v_i = 0;
-+  uint64_t v_n = 0;
-+  uint32_t v_p0 = 0;
-+  uint32_t v_chunk_bits = 0;
-+  uint32_t v_chunk_count = 0;
-+  uint32_t v_pixels_per_chunk = 0;
- 
--wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_crc32__ieee_hasher__initialize(
--    wuffs_crc32__ieee_hasher* self,
--    size_t sizeof_star_self,
--    uint64_t wuffs_version,
--    uint32_t options){
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (sizeof(*self) != sizeof_star_self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
--  }
--  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
--      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
--    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
--    // The whole point of this if-check is to detect an uninitialized *self.
--    // We disable the warning on GCC. Clang-5.0 does not have this warning.
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
--#endif
--    if (self->private_impl.magic != 0) {
--      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
-+  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
-+  if ((v_dst_bits_per_pixel & 7u) != 0u) {
-+    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+    goto exit;
-+  }
-+  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
-+  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
-+  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048));
-+  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
-+  while (true) {
-+    if (self->private_impl.f_dst_x == self->private_impl.f_width) {
-+      self->private_impl.f_dst_x = 0u;
-+      self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
-+      if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
-+        break;
-+      }
-     }
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--  } else {
--    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
--      memset(self, 0, sizeof(*self));
--      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-+    v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
-+    if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
-+      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
-+    }
-+    v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
-+    if (v_i >= ((uint64_t)(v_dst.len))) {
-+      if (self->private_impl.f_bits_per_pixel == 1u) {
-+        v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 31u) / 32u);
-+        v_pixels_per_chunk = 32u;
-+      } else if (self->private_impl.f_bits_per_pixel == 2u) {
-+        v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 15u) / 16u);
-+        v_pixels_per_chunk = 16u;
-+      } else {
-+        v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 7u) / 8u);
-+        v_pixels_per_chunk = 8u;
-+      }
-+      while ((v_chunk_count >= 64u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 256u)) {
-+        iop_a_src += 256u;
-+        self->private_impl.f_dst_x = wuffs_base__u32__min(self->private_impl.f_width, ((uint32_t)(self->private_impl.f_dst_x + (v_pixels_per_chunk * 64u))));
-+        v_chunk_count -= 64u;
-+      }
-+      while ((v_chunk_count >= 8u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 32u)) {
-+        iop_a_src += 32u;
-+        self->private_impl.f_dst_x = wuffs_base__u32__min(self->private_impl.f_width, ((uint32_t)(self->private_impl.f_dst_x + (v_pixels_per_chunk * 8u))));
-+        v_chunk_count -= 8u;
-+      }
-+      while (v_chunk_count > 0u) {
-+        if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
-+          status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
-+          goto ok;
-+        }
-+        iop_a_src += 4u;
-+        self->private_impl.f_dst_x = wuffs_base__u32__min(self->private_impl.f_width, ((uint32_t)(self->private_impl.f_dst_x + (v_pixels_per_chunk * 1u))));
-+        v_chunk_count -= 1u;
-+      }
-+      continue;
-+    }
-+    v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_i);
-+    v_p0 = 0u;
-+    if (self->private_impl.f_bits_per_pixel == 1u) {
-+      v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 31u) / 32u);
-+      v_chunk_count = wuffs_base__u32__min(v_chunk_count, 16u);
-+      while ((v_chunk_count > 0u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 4u)) {
-+        v_chunk_bits = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+        iop_a_src += 4u;
-+        self->private_data.f_scratch[(v_p0 + 0u)] = ((uint8_t)((1u & (v_chunk_bits >> 31u))));
-+        self->private_data.f_scratch[(v_p0 + 1u)] = ((uint8_t)((1u & (v_chunk_bits >> 30u))));
-+        self->private_data.f_scratch[(v_p0 + 2u)] = ((uint8_t)((1u & (v_chunk_bits >> 29u))));
-+        self->private_data.f_scratch[(v_p0 + 3u)] = ((uint8_t)((1u & (v_chunk_bits >> 28u))));
-+        self->private_data.f_scratch[(v_p0 + 4u)] = ((uint8_t)((1u & (v_chunk_bits >> 27u))));
-+        self->private_data.f_scratch[(v_p0 + 5u)] = ((uint8_t)((1u & (v_chunk_bits >> 26u))));
-+        self->private_data.f_scratch[(v_p0 + 6u)] = ((uint8_t)((1u & (v_chunk_bits >> 25u))));
-+        self->private_data.f_scratch[(v_p0 + 7u)] = ((uint8_t)((1u & (v_chunk_bits >> 24u))));
-+        self->private_data.f_scratch[(v_p0 + 8u)] = ((uint8_t)((1u & (v_chunk_bits >> 23u))));
-+        self->private_data.f_scratch[(v_p0 + 9u)] = ((uint8_t)((1u & (v_chunk_bits >> 22u))));
-+        self->private_data.f_scratch[(v_p0 + 10u)] = ((uint8_t)((1u & (v_chunk_bits >> 21u))));
-+        self->private_data.f_scratch[(v_p0 + 11u)] = ((uint8_t)((1u & (v_chunk_bits >> 20u))));
-+        self->private_data.f_scratch[(v_p0 + 12u)] = ((uint8_t)((1u & (v_chunk_bits >> 19u))));
-+        self->private_data.f_scratch[(v_p0 + 13u)] = ((uint8_t)((1u & (v_chunk_bits >> 18u))));
-+        self->private_data.f_scratch[(v_p0 + 14u)] = ((uint8_t)((1u & (v_chunk_bits >> 17u))));
-+        self->private_data.f_scratch[(v_p0 + 15u)] = ((uint8_t)((1u & (v_chunk_bits >> 16u))));
-+        self->private_data.f_scratch[(v_p0 + 16u)] = ((uint8_t)((1u & (v_chunk_bits >> 15u))));
-+        self->private_data.f_scratch[(v_p0 + 17u)] = ((uint8_t)((1u & (v_chunk_bits >> 14u))));
-+        self->private_data.f_scratch[(v_p0 + 18u)] = ((uint8_t)((1u & (v_chunk_bits >> 13u))));
-+        self->private_data.f_scratch[(v_p0 + 19u)] = ((uint8_t)((1u & (v_chunk_bits >> 12u))));
-+        self->private_data.f_scratch[(v_p0 + 20u)] = ((uint8_t)((1u & (v_chunk_bits >> 11u))));
-+        self->private_data.f_scratch[(v_p0 + 21u)] = ((uint8_t)((1u & (v_chunk_bits >> 10u))));
-+        self->private_data.f_scratch[(v_p0 + 22u)] = ((uint8_t)((1u & (v_chunk_bits >> 9u))));
-+        self->private_data.f_scratch[(v_p0 + 23u)] = ((uint8_t)((1u & (v_chunk_bits >> 8u))));
-+        self->private_data.f_scratch[(v_p0 + 24u)] = ((uint8_t)((1u & (v_chunk_bits >> 7u))));
-+        self->private_data.f_scratch[(v_p0 + 25u)] = ((uint8_t)((1u & (v_chunk_bits >> 6u))));
-+        self->private_data.f_scratch[(v_p0 + 26u)] = ((uint8_t)((1u & (v_chunk_bits >> 5u))));
-+        self->private_data.f_scratch[(v_p0 + 27u)] = ((uint8_t)((1u & (v_chunk_bits >> 4u))));
-+        self->private_data.f_scratch[(v_p0 + 28u)] = ((uint8_t)((1u & (v_chunk_bits >> 3u))));
-+        self->private_data.f_scratch[(v_p0 + 29u)] = ((uint8_t)((1u & (v_chunk_bits >> 2u))));
-+        self->private_data.f_scratch[(v_p0 + 30u)] = ((uint8_t)((1u & (v_chunk_bits >> 1u))));
-+        self->private_data.f_scratch[(v_p0 + 31u)] = ((uint8_t)((1u & (v_chunk_bits >> 0u))));
-+        v_p0 = ((v_p0 & 511u) + 32u);
-+        v_chunk_count -= 1u;
-+      }
-+    } else if (self->private_impl.f_bits_per_pixel == 2u) {
-+      v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 15u) / 16u);
-+      v_chunk_count = wuffs_base__u32__min(v_chunk_count, 32u);
-+      while ((v_chunk_count > 0u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 4u)) {
-+        v_chunk_bits = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+        iop_a_src += 4u;
-+        self->private_data.f_scratch[(v_p0 + 0u)] = ((uint8_t)((3u & (v_chunk_bits >> 30u))));
-+        self->private_data.f_scratch[(v_p0 + 1u)] = ((uint8_t)((3u & (v_chunk_bits >> 28u))));
-+        self->private_data.f_scratch[(v_p0 + 2u)] = ((uint8_t)((3u & (v_chunk_bits >> 26u))));
-+        self->private_data.f_scratch[(v_p0 + 3u)] = ((uint8_t)((3u & (v_chunk_bits >> 24u))));
-+        self->private_data.f_scratch[(v_p0 + 4u)] = ((uint8_t)((3u & (v_chunk_bits >> 22u))));
-+        self->private_data.f_scratch[(v_p0 + 5u)] = ((uint8_t)((3u & (v_chunk_bits >> 20u))));
-+        self->private_data.f_scratch[(v_p0 + 6u)] = ((uint8_t)((3u & (v_chunk_bits >> 18u))));
-+        self->private_data.f_scratch[(v_p0 + 7u)] = ((uint8_t)((3u & (v_chunk_bits >> 16u))));
-+        self->private_data.f_scratch[(v_p0 + 8u)] = ((uint8_t)((3u & (v_chunk_bits >> 14u))));
-+        self->private_data.f_scratch[(v_p0 + 9u)] = ((uint8_t)((3u & (v_chunk_bits >> 12u))));
-+        self->private_data.f_scratch[(v_p0 + 10u)] = ((uint8_t)((3u & (v_chunk_bits >> 10u))));
-+        self->private_data.f_scratch[(v_p0 + 11u)] = ((uint8_t)((3u & (v_chunk_bits >> 8u))));
-+        self->private_data.f_scratch[(v_p0 + 12u)] = ((uint8_t)((3u & (v_chunk_bits >> 6u))));
-+        self->private_data.f_scratch[(v_p0 + 13u)] = ((uint8_t)((3u & (v_chunk_bits >> 4u))));
-+        self->private_data.f_scratch[(v_p0 + 14u)] = ((uint8_t)((3u & (v_chunk_bits >> 2u))));
-+        self->private_data.f_scratch[(v_p0 + 15u)] = ((uint8_t)((3u & (v_chunk_bits >> 0u))));
-+        v_p0 = ((v_p0 & 511u) + 16u);
-+        v_chunk_count -= 1u;
-+      }
-     } else {
--      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+      v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 7u) / 8u);
-+      v_chunk_count = wuffs_base__u32__min(v_chunk_count, 64u);
-+      while ((v_chunk_count > 0u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 4u)) {
-+        v_chunk_bits = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+        iop_a_src += 4u;
-+        self->private_data.f_scratch[(v_p0 + 0u)] = ((uint8_t)((15u & (v_chunk_bits >> 28u))));
-+        self->private_data.f_scratch[(v_p0 + 1u)] = ((uint8_t)((15u & (v_chunk_bits >> 24u))));
-+        self->private_data.f_scratch[(v_p0 + 2u)] = ((uint8_t)((15u & (v_chunk_bits >> 20u))));
-+        self->private_data.f_scratch[(v_p0 + 3u)] = ((uint8_t)((15u & (v_chunk_bits >> 16u))));
-+        self->private_data.f_scratch[(v_p0 + 4u)] = ((uint8_t)((15u & (v_chunk_bits >> 12u))));
-+        self->private_data.f_scratch[(v_p0 + 5u)] = ((uint8_t)((15u & (v_chunk_bits >> 8u))));
-+        self->private_data.f_scratch[(v_p0 + 6u)] = ((uint8_t)((15u & (v_chunk_bits >> 4u))));
-+        self->private_data.f_scratch[(v_p0 + 7u)] = ((uint8_t)((15u & (v_chunk_bits >> 0u))));
-+        v_p0 = ((v_p0 & 511u) + 8u);
-+        v_chunk_count -= 1u;
-+      }
-+    }
-+    v_p0 = wuffs_base__u32__min(v_p0, wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x));
-+    v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, v_p0));
-+    if (v_n == 0u) {
-+      status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
-+      goto ok;
-     }
-+    wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
-   }
-+  status = wuffs_base__make_status(NULL);
-+  goto ok;
- 
--  self->private_impl.choosy_up = &wuffs_crc32__ieee_hasher__up__choosy_default;
-+  ok:
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
- 
--  self->private_impl.magic = WUFFS_BASE__MAGIC;
--  self->private_impl.vtable_for__wuffs_base__hasher_u32.vtable_name =
--      wuffs_base__hasher_u32__vtable_name;
--  self->private_impl.vtable_for__wuffs_base__hasher_u32.function_pointers =
--      (const void*)(&wuffs_crc32__ieee_hasher__func_ptrs_for__wuffs_base__hasher_u32);
--  return wuffs_base__make_status(NULL);
-+  return status;
- }
- 
--wuffs_crc32__ieee_hasher*
--wuffs_crc32__ieee_hasher__alloc(void) {
--  wuffs_crc32__ieee_hasher* x =
--      (wuffs_crc32__ieee_hasher*)(calloc(sizeof(wuffs_crc32__ieee_hasher), 1));
--  if (!x) {
--    return NULL;
-+// -------- func bmp.decoder.frame_dirty_rect
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
-+wuffs_bmp__decoder__frame_dirty_rect(
-+    const wuffs_bmp__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_rect_ie_u32();
-   }
--  if (wuffs_crc32__ieee_hasher__initialize(
--      x, sizeof(wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
--    free(x);
--    return NULL;
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_rect_ie_u32();
-   }
--  return x;
--}
- 
--size_t
--sizeof__wuffs_crc32__ieee_hasher(void) {
--  return sizeof(wuffs_crc32__ieee_hasher);
-+  return wuffs_base__utility__make_rect_ie_u32(
-+      0u,
-+      0u,
-+      self->private_impl.f_width,
-+      self->private_impl.f_height);
- }
- 
--// ---------------- Function Implementations
--
--// -------- func crc32.ieee_hasher.get_quirk
-+// -------- func bmp.decoder.num_animation_loops
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_crc32__ieee_hasher__get_quirk(
--    const wuffs_crc32__ieee_hasher* self,
--    uint32_t a_key) {
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_bmp__decoder__num_animation_loops(
-+    const wuffs_bmp__decoder* self) {
-   if (!self) {
-     return 0;
-   }
-@@ -33524,709 +33654,531 @@ wuffs_crc32__ieee_hasher__get_quirk(
-   return 0u;
- }
- 
--// -------- func crc32.ieee_hasher.set_quirk
-+// -------- func bmp.decoder.num_decoded_frame_configs
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_crc32__ieee_hasher__set_quirk(
--    wuffs_crc32__ieee_hasher* self,
--    uint32_t a_key,
--    uint64_t a_value) {
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_bmp__decoder__num_decoded_frame_configs(
-+    const wuffs_bmp__decoder* self) {
-   if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+    return 0;
-   }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-   }
- 
--  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+  if (self->private_impl.f_call_sequence > 32u) {
-+    return 1u;
-+  }
-+  return 0u;
- }
- 
--// -------- func crc32.ieee_hasher.update
-+// -------- func bmp.decoder.num_decoded_frames
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_crc32__ieee_hasher__update(
--    wuffs_crc32__ieee_hasher* self,
--    wuffs_base__slice_u8 a_x) {
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_bmp__decoder__num_decoded_frames(
-+    const wuffs_bmp__decoder* self) {
-   if (!self) {
--    return wuffs_base__make_empty_struct();
-+    return 0;
-   }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_empty_struct();
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-   }
- 
--  if (self->private_impl.f_state == 0u) {
--    self->private_impl.choosy_up = (
--#if defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32)
--        wuffs_base__cpu_arch__have_arm_crc32() ? &wuffs_crc32__ieee_hasher__up_arm_crc32 :
--#endif
--#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
--        wuffs_base__cpu_arch__have_x86_avx2() ? &wuffs_crc32__ieee_hasher__up_x86_avx2 :
--#endif
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_crc32__ieee_hasher__up_x86_sse42 :
--#endif
--        self->private_impl.choosy_up);
-+  if (self->private_impl.f_call_sequence > 64u) {
-+    return 1u;
-   }
--  wuffs_crc32__ieee_hasher__up(self, a_x);
--  return wuffs_base__make_empty_struct();
-+  return 0u;
- }
- 
--// -------- func crc32.ieee_hasher.update_u32
-+// -------- func bmp.decoder.restart_frame
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_crc32__ieee_hasher__update_u32(
--    wuffs_crc32__ieee_hasher* self,
--    wuffs_base__slice_u8 a_x) {
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_bmp__decoder__restart_frame(
-+    wuffs_bmp__decoder* self,
-+    uint64_t a_index,
-+    uint64_t a_io_position) {
-   if (!self) {
--    return 0;
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
-   if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return 0;
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-   }
- 
--  wuffs_crc32__ieee_hasher__update(self, a_x);
--  return self->private_impl.f_state;
-+  if (self->private_impl.f_call_sequence < 32u) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+  }
-+  if (a_index != 0u) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  self->private_impl.f_call_sequence = 40u;
-+  self->private_impl.f_frame_config_io_position = a_io_position;
-+  return wuffs_base__make_status(NULL);
- }
- 
--// -------- func crc32.ieee_hasher.up
-+// -------- func bmp.decoder.set_report_metadata
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_crc32__ieee_hasher__up(
--    wuffs_crc32__ieee_hasher* self,
--    wuffs_base__slice_u8 a_x) {
--  return (*self->private_impl.choosy_up)(self, a_x);
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_bmp__decoder__set_report_metadata(
-+    wuffs_bmp__decoder* self,
-+    uint32_t a_fourcc,
-+    bool a_report) {
-+  return wuffs_base__make_empty_struct();
- }
- 
-+// -------- func bmp.decoder.tell_me_more
-+
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_crc32__ieee_hasher__up__choosy_default(
--    wuffs_crc32__ieee_hasher* self,
--    wuffs_base__slice_u8 a_x) {
--  uint32_t v_s = 0;
--  wuffs_base__slice_u8 v_p = {0};
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_bmp__decoder__tell_me_more(
-+    wuffs_bmp__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__more_information* a_minfo,
-+    wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_dst || !a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 4)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  v_s = (4294967295u ^ self->private_impl.f_state);
--  {
--    wuffs_base__slice_u8 i_slice_p = a_x;
--    v_p.ptr = i_slice_p.ptr;
--    v_p.len = 16;
--    uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32);
--    while (v_p.ptr < i_end0_p) {
--      v_s ^= ((((uint32_t)(v_p.ptr[0u])) << 0u) |
--          (((uint32_t)(v_p.ptr[1u])) << 8u) |
--          (((uint32_t)(v_p.ptr[2u])) << 16u) |
--          (((uint32_t)(v_p.ptr[3u])) << 24u));
--      v_s = (WUFFS_CRC32__IEEE_TABLE[0u][v_p.ptr[15u]] ^
--          WUFFS_CRC32__IEEE_TABLE[1u][v_p.ptr[14u]] ^
--          WUFFS_CRC32__IEEE_TABLE[2u][v_p.ptr[13u]] ^
--          WUFFS_CRC32__IEEE_TABLE[3u][v_p.ptr[12u]] ^
--          WUFFS_CRC32__IEEE_TABLE[4u][v_p.ptr[11u]] ^
--          WUFFS_CRC32__IEEE_TABLE[5u][v_p.ptr[10u]] ^
--          WUFFS_CRC32__IEEE_TABLE[6u][v_p.ptr[9u]] ^
--          WUFFS_CRC32__IEEE_TABLE[7u][v_p.ptr[8u]] ^
--          WUFFS_CRC32__IEEE_TABLE[8u][v_p.ptr[7u]] ^
--          WUFFS_CRC32__IEEE_TABLE[9u][v_p.ptr[6u]] ^
--          WUFFS_CRC32__IEEE_TABLE[10u][v_p.ptr[5u]] ^
--          WUFFS_CRC32__IEEE_TABLE[11u][v_p.ptr[4u]] ^
--          WUFFS_CRC32__IEEE_TABLE[12u][(255u & (v_s >> 24u))] ^
--          WUFFS_CRC32__IEEE_TABLE[13u][(255u & (v_s >> 16u))] ^
--          WUFFS_CRC32__IEEE_TABLE[14u][(255u & (v_s >> 8u))] ^
--          WUFFS_CRC32__IEEE_TABLE[15u][(255u & (v_s >> 0u))]);
--      v_p.ptr += 16;
--      v_s ^= ((((uint32_t)(v_p.ptr[0u])) << 0u) |
--          (((uint32_t)(v_p.ptr[1u])) << 8u) |
--          (((uint32_t)(v_p.ptr[2u])) << 16u) |
--          (((uint32_t)(v_p.ptr[3u])) << 24u));
--      v_s = (WUFFS_CRC32__IEEE_TABLE[0u][v_p.ptr[15u]] ^
--          WUFFS_CRC32__IEEE_TABLE[1u][v_p.ptr[14u]] ^
--          WUFFS_CRC32__IEEE_TABLE[2u][v_p.ptr[13u]] ^
--          WUFFS_CRC32__IEEE_TABLE[3u][v_p.ptr[12u]] ^
--          WUFFS_CRC32__IEEE_TABLE[4u][v_p.ptr[11u]] ^
--          WUFFS_CRC32__IEEE_TABLE[5u][v_p.ptr[10u]] ^
--          WUFFS_CRC32__IEEE_TABLE[6u][v_p.ptr[9u]] ^
--          WUFFS_CRC32__IEEE_TABLE[7u][v_p.ptr[8u]] ^
--          WUFFS_CRC32__IEEE_TABLE[8u][v_p.ptr[7u]] ^
--          WUFFS_CRC32__IEEE_TABLE[9u][v_p.ptr[6u]] ^
--          WUFFS_CRC32__IEEE_TABLE[10u][v_p.ptr[5u]] ^
--          WUFFS_CRC32__IEEE_TABLE[11u][v_p.ptr[4u]] ^
--          WUFFS_CRC32__IEEE_TABLE[12u][(255u & (v_s >> 24u))] ^
--          WUFFS_CRC32__IEEE_TABLE[13u][(255u & (v_s >> 16u))] ^
--          WUFFS_CRC32__IEEE_TABLE[14u][(255u & (v_s >> 8u))] ^
--          WUFFS_CRC32__IEEE_TABLE[15u][(255u & (v_s >> 0u))]);
--      v_p.ptr += 16;
--    }
--    v_p.len = 16;
--    uint8_t* i_end1_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 16) * 16);
--    while (v_p.ptr < i_end1_p) {
--      v_s ^= ((((uint32_t)(v_p.ptr[0u])) << 0u) |
--          (((uint32_t)(v_p.ptr[1u])) << 8u) |
--          (((uint32_t)(v_p.ptr[2u])) << 16u) |
--          (((uint32_t)(v_p.ptr[3u])) << 24u));
--      v_s = (WUFFS_CRC32__IEEE_TABLE[0u][v_p.ptr[15u]] ^
--          WUFFS_CRC32__IEEE_TABLE[1u][v_p.ptr[14u]] ^
--          WUFFS_CRC32__IEEE_TABLE[2u][v_p.ptr[13u]] ^
--          WUFFS_CRC32__IEEE_TABLE[3u][v_p.ptr[12u]] ^
--          WUFFS_CRC32__IEEE_TABLE[4u][v_p.ptr[11u]] ^
--          WUFFS_CRC32__IEEE_TABLE[5u][v_p.ptr[10u]] ^
--          WUFFS_CRC32__IEEE_TABLE[6u][v_p.ptr[9u]] ^
--          WUFFS_CRC32__IEEE_TABLE[7u][v_p.ptr[8u]] ^
--          WUFFS_CRC32__IEEE_TABLE[8u][v_p.ptr[7u]] ^
--          WUFFS_CRC32__IEEE_TABLE[9u][v_p.ptr[6u]] ^
--          WUFFS_CRC32__IEEE_TABLE[10u][v_p.ptr[5u]] ^
--          WUFFS_CRC32__IEEE_TABLE[11u][v_p.ptr[4u]] ^
--          WUFFS_CRC32__IEEE_TABLE[12u][(255u & (v_s >> 24u))] ^
--          WUFFS_CRC32__IEEE_TABLE[13u][(255u & (v_s >> 16u))] ^
--          WUFFS_CRC32__IEEE_TABLE[14u][(255u & (v_s >> 8u))] ^
--          WUFFS_CRC32__IEEE_TABLE[15u][(255u & (v_s >> 0u))]);
--      v_p.ptr += 16;
--    }
--    v_p.len = 1;
--    uint8_t* i_end2_p = i_slice_p.ptr + i_slice_p.len;
--    while (v_p.ptr < i_end2_p) {
--      v_s = (WUFFS_CRC32__IEEE_TABLE[0u][(((uint8_t)(v_s)) ^ v_p.ptr[0u])] ^ (v_s >> 8u));
--      v_p.ptr += 1;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_tell_me_more;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_bmp__decoder__do_tell_me_more(self, a_dst, a_minfo, a_src);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_bmp__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-     }
--    v_p.len = 0;
-+
-+    ok:
-+    self->private_impl.p_tell_me_more = 0;
-+    goto exit;
-   }
--  self->private_impl.f_state = (4294967295u ^ v_s);
--  return wuffs_base__make_empty_struct();
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_tell_me_more = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 4 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
- }
- 
--// -------- func crc32.ieee_hasher.checksum_u32
-+// -------- func bmp.decoder.do_tell_me_more
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_crc32__ieee_hasher__checksum_u32(
--    const wuffs_crc32__ieee_hasher* self) {
--  if (!self) {
--    return 0;
-+static wuffs_base__status
-+wuffs_bmp__decoder__do_tell_me_more(
-+    wuffs_bmp__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__more_information* a_minfo,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  if (self->private_impl.f_io_redirect_fourcc <= 1u) {
-+    status = wuffs_base__make_status(wuffs_base__error__no_more_information);
-+    goto exit;
-   }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
-+  if (a_minfo != NULL) {
-+    wuffs_base__more_information__set(a_minfo,
-+        1u,
-+        self->private_impl.f_io_redirect_fourcc,
-+        0u,
-+        self->private_impl.f_io_redirect_pos,
-+        18446744073709551615u);
-   }
-+  self->private_impl.f_io_redirect_fourcc = 1u;
- 
--  return self->private_impl.f_state;
-+  goto ok;
-+  ok:
-+  goto exit;
-+  exit:
-+  return status;
- }
- 
--// ‼ WUFFS MULTI-FILE SECTION +arm_crc32
--// -------- func crc32.ieee_hasher.up_arm_crc32
-+// -------- func bmp.decoder.workbuf_len
- 
--#if defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32)
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_crc32__ieee_hasher__up_arm_crc32(
--    wuffs_crc32__ieee_hasher* self,
--    wuffs_base__slice_u8 a_x) {
--  wuffs_base__slice_u8 v_p = {0};
--  uint32_t v_s = 0;
--
--  v_s = (4294967295u ^ self->private_impl.f_state);
--  while ((((uint64_t)(a_x.len)) > 0u) && ((15u & ((uint32_t)(0xFFFu & (uintptr_t)(a_x.ptr)))) != 0u)) {
--    v_s = __crc32b(v_s, a_x.ptr[0u]);
--    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_bmp__decoder__workbuf_len(
-+    const wuffs_bmp__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-   }
--  {
--    wuffs_base__slice_u8 i_slice_p = a_x;
--    v_p.ptr = i_slice_p.ptr;
--    v_p.len = 8;
--    uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 128) * 128);
--    while (v_p.ptr < i_end0_p) {
--      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
--      v_p.ptr += 8;
--      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
--      v_p.ptr += 8;
--      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
--      v_p.ptr += 8;
--      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
--      v_p.ptr += 8;
--      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
--      v_p.ptr += 8;
--      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
--      v_p.ptr += 8;
--      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
--      v_p.ptr += 8;
--      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
--      v_p.ptr += 8;
--      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
--      v_p.ptr += 8;
--      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
--      v_p.ptr += 8;
--      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
--      v_p.ptr += 8;
--      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
--      v_p.ptr += 8;
--      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
--      v_p.ptr += 8;
--      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
--      v_p.ptr += 8;
--      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
--      v_p.ptr += 8;
--      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
--      v_p.ptr += 8;
--    }
--    v_p.len = 8;
--    uint8_t* i_end1_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 8) * 8);
--    while (v_p.ptr < i_end1_p) {
--      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
--      v_p.ptr += 8;
--    }
--    v_p.len = 1;
--    uint8_t* i_end2_p = i_slice_p.ptr + i_slice_p.len;
--    while (v_p.ptr < i_end2_p) {
--      v_s = __crc32b(v_s, v_p.ptr[0u]);
--      v_p.ptr += 1;
--    }
--    v_p.len = 0;
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-   }
--  self->private_impl.f_state = (4294967295u ^ v_s);
--  return wuffs_base__make_empty_struct();
-+
-+  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
- }
--#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32)
--// ‼ WUFFS MULTI-FILE SECTION -arm_crc32
- 
--// ‼ WUFFS MULTI-FILE SECTION +x86_avx2
--// -------- func crc32.ieee_hasher.up_x86_avx2
-+// -------- func bmp.decoder.read_palette
- 
--#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
--WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_crc32__ieee_hasher__up_x86_avx2(
--    wuffs_crc32__ieee_hasher* self,
--    wuffs_base__slice_u8 a_x) {
--  uint32_t v_s = 0;
--  wuffs_base__slice_u8 v_p = {0};
--  __m128i v_k = {0};
--  __m128i v_x0 = {0};
--  __m128i v_x1 = {0};
--  __m128i v_x2 = {0};
--  __m128i v_x3 = {0};
--  __m128i v_y0 = {0};
--  __m128i v_y1 = {0};
--  __m128i v_y2 = {0};
--  __m128i v_y3 = {0};
--  uint64_t v_tail_index = 0;
-+static wuffs_base__status
-+wuffs_bmp__decoder__read_palette(
-+    wuffs_bmp__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  v_s = (4294967295u ^ self->private_impl.f_state);
--  while ((((uint64_t)(a_x.len)) > 0u) && ((15u & ((uint32_t)(0xFFFu & (uintptr_t)(a_x.ptr)))) != 0u)) {
--    v_s = (WUFFS_CRC32__IEEE_TABLE[0u][(((uint8_t)(v_s)) ^ a_x.ptr[0u])] ^ (v_s >> 8u));
--    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
-+  uint32_t v_i = 0;
-+  uint32_t v_argb = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-   }
--  if (((uint64_t)(a_x.len)) < 64u) {
--    {
--      wuffs_base__slice_u8 i_slice_p = a_x;
--      v_p.ptr = i_slice_p.ptr;
--      v_p.len = 1;
--      uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len;
--      while (v_p.ptr < i_end0_p) {
--        v_s = (WUFFS_CRC32__IEEE_TABLE[0u][(((uint8_t)(v_s)) ^ v_p.ptr[0u])] ^ (v_s >> 8u));
--        v_p.ptr += 1;
-+
-+  uint32_t coro_susp_point = self->private_impl.p_read_palette;
-+  if (coro_susp_point) {
-+    v_i = self->private_data.s_read_palette.v_i;
-+  }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_bitmap_info_len == 12u) {
-+      while ((v_i < 256u) && (self->private_impl.f_padding >= 3u)) {
-+        self->private_impl.f_padding -= 3u;
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+          uint32_t t_0;
-+          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
-+            t_0 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
-+            iop_a_src += 3;
-+          } else {
-+            self->private_data.s_read_palette.scratch = 0;
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+            while (true) {
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint64_t* scratch = &self->private_data.s_read_palette.scratch;
-+              uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
-+              *scratch <<= 8;
-+              *scratch >>= 8;
-+              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
-+              if (num_bits_0 == 16) {
-+                t_0 = ((uint32_t)(*scratch));
-+                break;
-+              }
-+              num_bits_0 += 8u;
-+              *scratch |= ((uint64_t)(num_bits_0)) << 56;
-+            }
-+          }
-+          v_argb = t_0;
-+        }
-+        v_argb |= 4278190080u;
-+        self->private_data.f_src_palette[((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u)));
-+        self->private_data.f_src_palette[((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u)));
-+        self->private_data.f_src_palette[((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u)));
-+        self->private_data.f_src_palette[((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u)));
-+        v_i += 1u;
-+      }
-+    } else {
-+      while ((v_i < 256u) && (self->private_impl.f_padding >= 4u)) {
-+        self->private_impl.f_padding -= 4u;
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+          uint32_t t_1;
-+          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+            t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+            iop_a_src += 4;
-+          } else {
-+            self->private_data.s_read_palette.scratch = 0;
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+            while (true) {
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint64_t* scratch = &self->private_data.s_read_palette.scratch;
-+              uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
-+              *scratch <<= 8;
-+              *scratch >>= 8;
-+              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
-+              if (num_bits_1 == 24) {
-+                t_1 = ((uint32_t)(*scratch));
-+                break;
-+              }
-+              num_bits_1 += 8u;
-+              *scratch |= ((uint64_t)(num_bits_1)) << 56;
-+            }
-+          }
-+          v_argb = t_1;
-+        }
-+        v_argb |= 4278190080u;
-+        self->private_data.f_src_palette[((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u)));
-+        self->private_data.f_src_palette[((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u)));
-+        self->private_data.f_src_palette[((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u)));
-+        self->private_data.f_src_palette[((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u)));
-+        v_i += 1u;
-       }
--      v_p.len = 0;
-     }
--    self->private_impl.f_state = (4294967295u ^ v_s);
--    return wuffs_base__make_empty_struct();
--  }
--  v_x0 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u));
--  v_x1 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16u));
--  v_x2 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 32u));
--  v_x3 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 48u));
--  v_x0 = _mm_xor_si128(v_x0, _mm_cvtsi32_si128((int32_t)(v_s)));
--  v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K1K2));
--  {
--    wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, 64u);
--    v_p.ptr = i_slice_p.ptr;
--    v_p.len = 64;
--    uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 64) * 64);
--    while (v_p.ptr < i_end0_p) {
--      v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u));
--      v_y1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(0u));
--      v_y2 = _mm_clmulepi64_si128(v_x2, v_k, (int32_t)(0u));
--      v_y3 = _mm_clmulepi64_si128(v_x3, v_k, (int32_t)(0u));
--      v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u));
--      v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(17u));
--      v_x2 = _mm_clmulepi64_si128(v_x2, v_k, (int32_t)(17u));
--      v_x3 = _mm_clmulepi64_si128(v_x3, v_k, (int32_t)(17u));
--      v_x0 = _mm_xor_si128(_mm_xor_si128(v_x0, v_y0), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 0u)));
--      v_x1 = _mm_xor_si128(_mm_xor_si128(v_x1, v_y1), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 16u)));
--      v_x2 = _mm_xor_si128(_mm_xor_si128(v_x2, v_y2), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 32u)));
--      v_x3 = _mm_xor_si128(_mm_xor_si128(v_x3, v_y3), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 48u)));
--      v_p.ptr += 64;
-+    while (v_i < 256u) {
-+      self->private_data.f_src_palette[((4u * v_i) + 0u)] = 0u;
-+      self->private_data.f_src_palette[((4u * v_i) + 1u)] = 0u;
-+      self->private_data.f_src_palette[((4u * v_i) + 2u)] = 0u;
-+      self->private_data.f_src_palette[((4u * v_i) + 3u)] = 255u;
-+      v_i += 1u;
-     }
--    v_p.len = 0;
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_read_palette = 0;
-+    goto exit;
-   }
--  v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K3K4));
--  v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u));
--  v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u));
--  v_x0 = _mm_xor_si128(v_x0, v_x1);
--  v_x0 = _mm_xor_si128(v_x0, v_y0);
--  v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u));
--  v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u));
--  v_x0 = _mm_xor_si128(v_x0, v_x2);
--  v_x0 = _mm_xor_si128(v_x0, v_y0);
--  v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u));
--  v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u));
--  v_x0 = _mm_xor_si128(v_x0, v_x3);
--  v_x0 = _mm_xor_si128(v_x0, v_y0);
--  v_x1 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(16u));
--  v_x2 = _mm_set_epi32((int32_t)(0u), (int32_t)(4294967295u), (int32_t)(0u), (int32_t)(4294967295u));
--  v_x0 = _mm_srli_si128(v_x0, (int32_t)(8u));
--  v_x0 = _mm_xor_si128(v_x0, v_x1);
--  v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K5ZZ));
--  v_x1 = _mm_srli_si128(v_x0, (int32_t)(4u));
--  v_x0 = _mm_and_si128(v_x0, v_x2);
--  v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u));
--  v_x0 = _mm_xor_si128(v_x0, v_x1);
--  v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_PXMU));
--  v_x1 = _mm_and_si128(v_x0, v_x2);
--  v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(16u));
--  v_x1 = _mm_and_si128(v_x1, v_x2);
--  v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(0u));
--  v_x0 = _mm_xor_si128(v_x0, v_x1);
--  v_s = ((uint32_t)(_mm_extract_epi32(v_x0, (int32_t)(1u))));
--  v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551552u);
--  if (v_tail_index < ((uint64_t)(a_x.len))) {
--    {
--      wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index);
--      v_p.ptr = i_slice_p.ptr;
--      v_p.len = 1;
--      uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len;
--      while (v_p.ptr < i_end0_p) {
--        v_s = (WUFFS_CRC32__IEEE_TABLE[0u][(((uint8_t)(v_s)) ^ v_p.ptr[0u])] ^ (v_s >> 8u));
--        v_p.ptr += 1;
--      }
--      v_p.len = 0;
--    }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_read_palette = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_read_palette.v_i = v_i;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
--  self->private_impl.f_state = (4294967295u ^ v_s);
--  return wuffs_base__make_empty_struct();
-+
-+  return status;
- }
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_64)
--// ‼ WUFFS MULTI-FILE SECTION -x86_avx2
- 
--// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
--// -------- func crc32.ieee_hasher.up_x86_sse42
-+// -------- func bmp.decoder.process_masks
- 
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_crc32__ieee_hasher__up_x86_sse42(
--    wuffs_crc32__ieee_hasher* self,
--    wuffs_base__slice_u8 a_x) {
--  uint32_t v_s = 0;
--  wuffs_base__slice_u8 v_p = {0};
--  __m128i v_k = {0};
--  __m128i v_x0 = {0};
--  __m128i v_x1 = {0};
--  __m128i v_x2 = {0};
--  __m128i v_x3 = {0};
--  __m128i v_y0 = {0};
--  __m128i v_y1 = {0};
--  __m128i v_y2 = {0};
--  __m128i v_y3 = {0};
--  uint64_t v_tail_index = 0;
-+static wuffs_base__status
-+wuffs_bmp__decoder__process_masks(
-+    wuffs_bmp__decoder* self) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  v_s = (4294967295u ^ self->private_impl.f_state);
--  while ((((uint64_t)(a_x.len)) > 0u) && ((15u & ((uint32_t)(0xFFFu & (uintptr_t)(a_x.ptr)))) != 0u)) {
--    v_s = (WUFFS_CRC32__IEEE_TABLE[0u][(((uint8_t)(v_s)) ^ a_x.ptr[0u])] ^ (v_s >> 8u));
--    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
--  }
--  if (((uint64_t)(a_x.len)) < 64u) {
--    {
--      wuffs_base__slice_u8 i_slice_p = a_x;
--      v_p.ptr = i_slice_p.ptr;
--      v_p.len = 1;
--      uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len;
--      while (v_p.ptr < i_end0_p) {
--        v_s = (WUFFS_CRC32__IEEE_TABLE[0u][(((uint8_t)(v_s)) ^ v_p.ptr[0u])] ^ (v_s >> 8u));
--        v_p.ptr += 1;
-+  uint32_t v_i = 0;
-+  uint32_t v_mask = 0;
-+  uint32_t v_n = 0;
-+
-+  while (v_i < 4u) {
-+    v_mask = self->private_impl.f_channel_masks[v_i];
-+    if (v_mask != 0u) {
-+      v_n = 0u;
-+      while ((v_mask & 1u) == 0u) {
-+        v_n += 1u;
-+        v_mask >>= 1u;
-       }
--      v_p.len = 0;
--    }
--    self->private_impl.f_state = (4294967295u ^ v_s);
--    return wuffs_base__make_empty_struct();
--  }
--  v_x0 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u));
--  v_x1 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16u));
--  v_x2 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 32u));
--  v_x3 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 48u));
--  v_x0 = _mm_xor_si128(v_x0, _mm_cvtsi32_si128((int32_t)(v_s)));
--  v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K1K2));
--  {
--    wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, 64u);
--    v_p.ptr = i_slice_p.ptr;
--    v_p.len = 64;
--    uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 64) * 64);
--    while (v_p.ptr < i_end0_p) {
--      v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u));
--      v_y1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(0u));
--      v_y2 = _mm_clmulepi64_si128(v_x2, v_k, (int32_t)(0u));
--      v_y3 = _mm_clmulepi64_si128(v_x3, v_k, (int32_t)(0u));
--      v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u));
--      v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(17u));
--      v_x2 = _mm_clmulepi64_si128(v_x2, v_k, (int32_t)(17u));
--      v_x3 = _mm_clmulepi64_si128(v_x3, v_k, (int32_t)(17u));
--      v_x0 = _mm_xor_si128(_mm_xor_si128(v_x0, v_y0), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 0u)));
--      v_x1 = _mm_xor_si128(_mm_xor_si128(v_x1, v_y1), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 16u)));
--      v_x2 = _mm_xor_si128(_mm_xor_si128(v_x2, v_y2), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 32u)));
--      v_x3 = _mm_xor_si128(_mm_xor_si128(v_x3, v_y3), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 48u)));
--      v_p.ptr += 64;
--    }
--    v_p.len = 0;
--  }
--  v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K3K4));
--  v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u));
--  v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u));
--  v_x0 = _mm_xor_si128(v_x0, v_x1);
--  v_x0 = _mm_xor_si128(v_x0, v_y0);
--  v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u));
--  v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u));
--  v_x0 = _mm_xor_si128(v_x0, v_x2);
--  v_x0 = _mm_xor_si128(v_x0, v_y0);
--  v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u));
--  v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17u));
--  v_x0 = _mm_xor_si128(v_x0, v_x3);
--  v_x0 = _mm_xor_si128(v_x0, v_y0);
--  v_x1 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(16u));
--  v_x2 = _mm_set_epi32((int32_t)(0u), (int32_t)(4294967295u), (int32_t)(0u), (int32_t)(4294967295u));
--  v_x0 = _mm_srli_si128(v_x0, (int32_t)(8u));
--  v_x0 = _mm_xor_si128(v_x0, v_x1);
--  v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K5ZZ));
--  v_x1 = _mm_srli_si128(v_x0, (int32_t)(4u));
--  v_x0 = _mm_and_si128(v_x0, v_x2);
--  v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0u));
--  v_x0 = _mm_xor_si128(v_x0, v_x1);
--  v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_PXMU));
--  v_x1 = _mm_and_si128(v_x0, v_x2);
--  v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(16u));
--  v_x1 = _mm_and_si128(v_x1, v_x2);
--  v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(0u));
--  v_x0 = _mm_xor_si128(v_x0, v_x1);
--  v_s = ((uint32_t)(_mm_extract_epi32(v_x0, (int32_t)(1u))));
--  v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551552u);
--  if (v_tail_index < ((uint64_t)(a_x.len))) {
--    {
--      wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index);
--      v_p.ptr = i_slice_p.ptr;
--      v_p.len = 1;
--      uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len;
--      while (v_p.ptr < i_end0_p) {
--        v_s = (WUFFS_CRC32__IEEE_TABLE[0u][(((uint8_t)(v_s)) ^ v_p.ptr[0u])] ^ (v_s >> 8u));
--        v_p.ptr += 1;
-+      self->private_impl.f_channel_shifts[v_i] = ((uint8_t)((v_n & 31u)));
-+      v_n = 0u;
-+      while ((v_mask & 1u) == 1u) {
-+        v_n += 1u;
-+        v_mask >>= 1u;
-       }
--      v_p.len = 0;
-+      if ((v_mask != 0u) || (v_n > 32u)) {
-+        status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
-+        goto exit;
-+      }
-+      self->private_impl.f_channel_num_bits[v_i] = ((uint8_t)(v_n));
-+    } else if (v_i != 3u) {
-+      status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
-+      goto exit;
-     }
-+    v_i += 1u;
-   }
--  self->private_impl.f_state = (4294967295u ^ v_s);
--  return wuffs_base__make_empty_struct();
-+
-+  goto ok;
-+  ok:
-+  goto exit;
-+  exit:
-+  return status;
- }
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC32)
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BMP)
- 
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__DEFLATE)
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BZIP2)
- 
- // ---------------- Status Codes Implementations
- 
--const char wuffs_deflate__error__bad_huffman_code_over_subscribed[] = "#deflate: bad Huffman code (over-subscribed)";
--const char wuffs_deflate__error__bad_huffman_code_under_subscribed[] = "#deflate: bad Huffman code (under-subscribed)";
--const char wuffs_deflate__error__bad_huffman_code_length_count[] = "#deflate: bad Huffman code length count";
--const char wuffs_deflate__error__bad_huffman_code_length_repetition[] = "#deflate: bad Huffman code length repetition";
--const char wuffs_deflate__error__bad_huffman_code[] = "#deflate: bad Huffman code";
--const char wuffs_deflate__error__bad_huffman_minimum_code_length[] = "#deflate: bad Huffman minimum code length";
--const char wuffs_deflate__error__bad_block[] = "#deflate: bad block";
--const char wuffs_deflate__error__bad_distance[] = "#deflate: bad distance";
--const char wuffs_deflate__error__bad_distance_code_count[] = "#deflate: bad distance code count";
--const char wuffs_deflate__error__bad_literal_length_code_count[] = "#deflate: bad literal/length code count";
--const char wuffs_deflate__error__inconsistent_stored_block_length[] = "#deflate: inconsistent stored block length";
--const char wuffs_deflate__error__missing_end_of_block_code[] = "#deflate: missing end-of-block code";
--const char wuffs_deflate__error__no_huffman_codes[] = "#deflate: no Huffman codes";
--const char wuffs_deflate__error__truncated_input[] = "#deflate: truncated input";
--const char wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state[] = "#deflate: internal error: inconsistent Huffman decoder state";
--const char wuffs_deflate__error__internal_error_inconsistent_i_o[] = "#deflate: internal error: inconsistent I/O";
--const char wuffs_deflate__error__internal_error_inconsistent_distance[] = "#deflate: internal error: inconsistent distance";
--const char wuffs_deflate__error__internal_error_inconsistent_n_bits[] = "#deflate: internal error: inconsistent n_bits";
-+const char wuffs_bzip2__error__bad_huffman_code_over_subscribed[] = "#bzip2: bad Huffman code (over-subscribed)";
-+const char wuffs_bzip2__error__bad_huffman_code_under_subscribed[] = "#bzip2: bad Huffman code (under-subscribed)";
-+const char wuffs_bzip2__error__bad_block_header[] = "#bzip2: bad block header";
-+const char wuffs_bzip2__error__bad_block_length[] = "#bzip2: bad block length";
-+const char wuffs_bzip2__error__bad_checksum[] = "#bzip2: bad checksum";
-+const char wuffs_bzip2__error__bad_header[] = "#bzip2: bad header";
-+const char wuffs_bzip2__error__bad_number_of_sections[] = "#bzip2: bad number of sections";
-+const char wuffs_bzip2__error__truncated_input[] = "#bzip2: truncated input";
-+const char wuffs_bzip2__error__unsupported_block_randomization[] = "#bzip2: unsupported block randomization";
-+const char wuffs_bzip2__error__internal_error_inconsistent_huffman_decoder_state[] = "#bzip2: internal error: inconsistent Huffman decoder state";
- 
- // ---------------- Private Consts
- 
- static const uint8_t
--WUFFS_DEFLATE__CODE_ORDER[19] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  16, 17, 18, 0, 8, 7, 9, 6,
--  10, 5, 11, 4, 12, 3, 13, 2,
--  14, 1, 15,
--};
--
--static const uint8_t
--WUFFS_DEFLATE__REVERSE8[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  0, 128, 64, 192, 32, 160, 96, 224,
--  16, 144, 80, 208, 48, 176, 112, 240,
--  8, 136, 72, 200, 40, 168, 104, 232,
--  24, 152, 88, 216, 56, 184, 120, 248,
--  4, 132, 68, 196, 36, 164, 100, 228,
--  20, 148, 84, 212, 52, 180, 116, 244,
--  12, 140, 76, 204, 44, 172, 108, 236,
--  28, 156, 92, 220, 60, 188, 124, 252,
--  2, 130, 66, 194, 34, 162, 98, 226,
--  18, 146, 82, 210, 50, 178, 114, 242,
--  10, 138, 74, 202, 42, 170, 106, 234,
--  26, 154, 90, 218, 58, 186, 122, 250,
--  6, 134, 70, 198, 38, 166, 102, 230,
--  22, 150, 86, 214, 54, 182, 118, 246,
--  14, 142, 78, 206, 46, 174, 110, 238,
--  30, 158, 94, 222, 62, 190, 126, 254,
--  1, 129, 65, 193, 33, 161, 97, 225,
--  17, 145, 81, 209, 49, 177, 113, 241,
--  9, 137, 73, 201, 41, 169, 105, 233,
--  25, 153, 89, 217, 57, 185, 121, 249,
--  5, 133, 69, 197, 37, 165, 101, 229,
--  21, 149, 85, 213, 53, 181, 117, 245,
--  13, 141, 77, 205, 45, 173, 109, 237,
--  29, 157, 93, 221, 61, 189, 125, 253,
--  3, 131, 67, 195, 35, 163, 99, 227,
--  19, 147, 83, 211, 51, 179, 115, 243,
--  11, 139, 75, 203, 43, 171, 107, 235,
--  27, 155, 91, 219, 59, 187, 123, 251,
--  7, 135, 71, 199, 39, 167, 103, 231,
--  23, 151, 87, 215, 55, 183, 119, 247,
--  15, 143, 79, 207, 47, 175, 111, 239,
--  31, 159, 95, 223, 63, 191, 127, 255,
--};
--
--static const uint32_t
--WUFFS_DEFLATE__LCODE_MAGIC_NUMBERS[32] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  1073741824, 1073742080, 1073742336, 1073742592, 1073742848, 1073743104, 1073743360, 1073743616,
--  1073743888, 1073744400, 1073744912, 1073745424, 1073745952, 1073746976, 1073748000, 1073749024,
--  1073750064, 1073752112, 1073754160, 1073756208, 1073758272, 1073762368, 1073766464, 1073770560,
--  1073774672, 1073782864, 1073791056, 1073799248, 1073807104, 134217728, 134217728, 134217728,
-+WUFFS_BZIP2__CLAMP_TO_5[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 1u, 2u, 3u, 4u, 5u, 5u, 5u,
- };
- 
- static const uint32_t
--WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[32] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  1073741824, 1073742080, 1073742336, 1073742592, 1073742864, 1073743376, 1073743904, 1073744928,
--  1073745968, 1073748016, 1073750080, 1073754176, 1073758288, 1073766480, 1073774688, 1073791072,
--  1073807472, 1073840240, 1073873024, 1073938560, 1074004112, 1074135184, 1074266272, 1074528416,
--  1074790576, 1075314864, 1075839168, 1076887744, 1077936336, 1080033488, 134217728, 134217728,
-+WUFFS_BZIP2__REV_CRC32_TABLE[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 79764919u, 159529838u, 222504665u, 319059676u, 398814059u, 445009330u, 507990021u,
-+  638119352u, 583659535u, 797628118u, 726387553u, 890018660u, 835552979u, 1015980042u, 944750013u,
-+  1276238704u, 1221641927u, 1167319070u, 1095957929u, 1595256236u, 1540665371u, 1452775106u, 1381403509u,
-+  1780037320u, 1859660671u, 1671105958u, 1733955601u, 2031960084u, 2111593891u, 1889500026u, 1952343757u,
-+  2552477408u, 2632100695u, 2443283854u, 2506133561u, 2334638140u, 2414271883u, 2191915858u, 2254759653u,
-+  3190512472u, 3135915759u, 3081330742u, 3009969537u, 2905550212u, 2850959411u, 2762807018u, 2691435357u,
-+  3560074640u, 3505614887u, 3719321342u, 3648080713u, 3342211916u, 3287746299u, 3467911202u, 3396681109u,
-+  4063920168u, 4143685023u, 4223187782u, 4286162673u, 3779000052u, 3858754371u, 3904687514u, 3967668269u,
-+  881225847u, 809987520u, 1023691545u, 969234094u, 662832811u, 591600412u, 771767749u, 717299826u,
-+  311336399u, 374308984u, 453813921u, 533576470u, 25881363u, 88864420u, 134795389u, 214552010u,
-+  2023205639u, 2086057648u, 1897238633u, 1976864222u, 1804852699u, 1867694188u, 1645340341u, 1724971778u,
-+  1587496639u, 1516133128u, 1461550545u, 1406951526u, 1302016099u, 1230646740u, 1142491917u, 1087903418u,
-+  2896545431u, 2825181984u, 2770861561u, 2716262478u, 3215044683u, 3143675388u, 3055782693u, 3001194130u,
-+  2326604591u, 2389456536u, 2200899649u, 2280525302u, 2578013683u, 2640855108u, 2418763421u, 2498394922u,
-+  3769900519u, 3832873040u, 3912640137u, 3992402750u, 4088425275u, 4151408268u, 4197601365u, 4277358050u,
-+  3334271071u, 3263032808u, 3476998961u, 3422541446u, 3585640067u, 3514407732u, 3694837229u, 3640369242u,
-+  1762451694u, 1842216281u, 1619975040u, 1682949687u, 2047383090u, 2127137669u, 1938468188u, 2001449195u,
-+  1325665622u, 1271206113u, 1183200824u, 1111960463u, 1543535498u, 1489069629u, 1434599652u, 1363369299u,
-+  622672798u, 568075817u, 748617968u, 677256519u, 907627842u, 853037301u, 1067152940u, 995781531u,
-+  51762726u, 131386257u, 177728840u, 240578815u, 269590778u, 349224269u, 429104020u, 491947555u,
-+  4046411278u, 4126034873u, 4172115296u, 4234965207u, 3794477266u, 3874110821u, 3953728444u, 4016571915u,
-+  3609705398u, 3555108353u, 3735388376u, 3664026991u, 3290680682u, 3236090077u, 3449943556u, 3378572211u,
-+  3174993278u, 3120533705u, 3032266256u, 2961025959u, 2923101090u, 2868635157u, 2813903052u, 2742672763u,
-+  2604032198u, 2683796849u, 2461293480u, 2524268063u, 2284983834u, 2364738477u, 2175806836u, 2238787779u,
-+  1569362073u, 1498123566u, 1409854455u, 1355396672u, 1317987909u, 1246755826u, 1192025387u, 1137557660u,
-+  2072149281u, 2135122070u, 1912620623u, 1992383480u, 1753615357u, 1816598090u, 1627664531u, 1707420964u,
-+  295390185u, 358241886u, 404320391u, 483945776u, 43990325u, 106832002u, 186451547u, 266083308u,
-+  932423249u, 861060070u, 1041341759u, 986742920u, 613929101u, 542559546u, 756411363u, 701822548u,
-+  3316196985u, 3244833742u, 3425377559u, 3370778784u, 3601682597u, 3530312978u, 3744426955u, 3689838204u,
-+  3819031489u, 3881883254u, 3928223919u, 4007849240u, 4037393693u, 4100235434u, 4180117107u, 4259748804u,
-+  2310601993u, 2373574846u, 2151335527u, 2231098320u, 2596047829u, 2659030626u, 2470359227u, 2550115596u,
-+  2947551409u, 2876312838u, 2788305887u, 2733848168u, 3165939309u, 3094707162u, 3040238851u, 2985771188u,
- };
- 
--#define WUFFS_DEFLATE__HUFFS_TABLE_SIZE 1024
--
--#define WUFFS_DEFLATE__HUFFS_TABLE_MASK 1023
--
- // ---------------- Private Initializer Prototypes
- 
- // ---------------- Private Function Prototypes
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_deflate__decoder__do_transform_io(
--    wuffs_deflate__decoder* self,
-+wuffs_bzip2__decoder__do_transform_io(
-+    wuffs_bzip2__decoder* self,
-     wuffs_base__io_buffer* a_dst,
-     wuffs_base__io_buffer* a_src,
-     wuffs_base__slice_u8 a_workbuf);
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_deflate__decoder__decode_blocks(
--    wuffs_deflate__decoder* self,
--    wuffs_base__io_buffer* a_dst,
-+wuffs_bzip2__decoder__prepare_block(
-+    wuffs_bzip2__decoder* self,
-     wuffs_base__io_buffer* a_src);
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_deflate__decoder__decode_uncompressed(
--    wuffs_deflate__decoder* self,
--    wuffs_base__io_buffer* a_dst,
-+wuffs_bzip2__decoder__read_code_lengths(
-+    wuffs_bzip2__decoder* self,
-     wuffs_base__io_buffer* a_src);
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_deflate__decoder__init_fixed_huffman(
--    wuffs_deflate__decoder* self);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_deflate__decoder__init_dynamic_huffman(
--    wuffs_deflate__decoder* self,
--    wuffs_base__io_buffer* a_src);
-+wuffs_bzip2__decoder__build_huffman_tree(
-+    wuffs_bzip2__decoder* self,
-+    uint32_t a_which);
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_deflate__decoder__init_huff(
--    wuffs_deflate__decoder* self,
--    uint32_t a_which,
--    uint32_t a_n_codes0,
--    uint32_t a_n_codes1,
--    uint32_t a_base_symbol);
-+static wuffs_base__empty_struct
-+wuffs_bzip2__decoder__build_huffman_table(
-+    wuffs_bzip2__decoder* self,
-+    uint32_t a_which);
- 
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_deflate__decoder__decode_huffman_bmi2(
--    wuffs_deflate__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__io_buffer* a_src);
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
-+static wuffs_base__empty_struct
-+wuffs_bzip2__decoder__invert_bwt(
-+    wuffs_bzip2__decoder* self);
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_deflate__decoder__decode_huffman_fast32(
--    wuffs_deflate__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__io_buffer* a_src);
-+static wuffs_base__empty_struct
-+wuffs_bzip2__decoder__flush_fast(
-+    wuffs_bzip2__decoder* self,
-+    wuffs_base__io_buffer* a_dst);
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_deflate__decoder__decode_huffman_fast64(
--    wuffs_deflate__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__io_buffer* a_src);
-+wuffs_bzip2__decoder__flush_slow(
-+    wuffs_bzip2__decoder* self,
-+    wuffs_base__io_buffer* a_dst);
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_deflate__decoder__decode_huffman_fast64__choosy_default(
--    wuffs_deflate__decoder* self,
--    wuffs_base__io_buffer* a_dst,
-+wuffs_bzip2__decoder__decode_huffman_fast(
-+    wuffs_bzip2__decoder* self,
-     wuffs_base__io_buffer* a_src);
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_deflate__decoder__decode_huffman_slow(
--    wuffs_deflate__decoder* self,
--    wuffs_base__io_buffer* a_dst,
-+wuffs_bzip2__decoder__decode_huffman_slow(
-+    wuffs_bzip2__decoder* self,
-     wuffs_base__io_buffer* a_src);
- 
- // ---------------- VTables
- 
- const wuffs_base__io_transformer__func_ptrs
--wuffs_deflate__decoder__func_ptrs_for__wuffs_base__io_transformer = {
-+wuffs_bzip2__decoder__func_ptrs_for__wuffs_base__io_transformer = {
-+  (wuffs_base__optional_u63(*)(const void*))(&wuffs_bzip2__decoder__dst_history_retain_length),
-   (uint64_t(*)(const void*,
--      uint32_t))(&wuffs_deflate__decoder__get_quirk),
--  (uint64_t(*)(const void*))(&wuffs_deflate__decoder__history_retain_length),
-+      uint32_t))(&wuffs_bzip2__decoder__get_quirk),
-   (wuffs_base__status(*)(void*,
-       uint32_t,
--      uint64_t))(&wuffs_deflate__decoder__set_quirk),
-+      uint64_t))(&wuffs_bzip2__decoder__set_quirk),
-   (wuffs_base__status(*)(void*,
-       wuffs_base__io_buffer*,
-       wuffs_base__io_buffer*,
--      wuffs_base__slice_u8))(&wuffs_deflate__decoder__transform_io),
--  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_deflate__decoder__workbuf_len),
-+      wuffs_base__slice_u8))(&wuffs_bzip2__decoder__transform_io),
-+  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_bzip2__decoder__workbuf_len),
- };
- 
- // ---------------- Initializer Implementations
- 
- wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_deflate__decoder__initialize(
--    wuffs_deflate__decoder* self,
-+wuffs_bzip2__decoder__initialize(
-+    wuffs_bzip2__decoder* self,
-     size_t sizeof_star_self,
-     uint64_t wuffs_version,
-     uint32_t options){
-@@ -34263,25 +34215,23 @@ wuffs_deflate__decoder__initialize(
-     }
-   }
- 
--  self->private_impl.choosy_decode_huffman_fast64 = &wuffs_deflate__decoder__decode_huffman_fast64__choosy_default;
--
-   self->private_impl.magic = WUFFS_BASE__MAGIC;
-   self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
-       wuffs_base__io_transformer__vtable_name;
-   self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
--      (const void*)(&wuffs_deflate__decoder__func_ptrs_for__wuffs_base__io_transformer);
-+      (const void*)(&wuffs_bzip2__decoder__func_ptrs_for__wuffs_base__io_transformer);
-   return wuffs_base__make_status(NULL);
- }
- 
--wuffs_deflate__decoder*
--wuffs_deflate__decoder__alloc(void) {
--  wuffs_deflate__decoder* x =
--      (wuffs_deflate__decoder*)(calloc(sizeof(wuffs_deflate__decoder), 1));
-+wuffs_bzip2__decoder*
-+wuffs_bzip2__decoder__alloc(void) {
-+  wuffs_bzip2__decoder* x =
-+      (wuffs_bzip2__decoder*)(calloc(1, sizeof(wuffs_bzip2__decoder)));
-   if (!x) {
-     return NULL;
-   }
--  if (wuffs_deflate__decoder__initialize(
--      x, sizeof(wuffs_deflate__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+  if (wuffs_bzip2__decoder__initialize(
-+      x, sizeof(wuffs_bzip2__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-     free(x);
-     return NULL;
-   }
-@@ -34289,59 +34239,18 @@ wuffs_deflate__decoder__alloc(void) {
- }
- 
- size_t
--sizeof__wuffs_deflate__decoder(void) {
--  return sizeof(wuffs_deflate__decoder);
-+sizeof__wuffs_bzip2__decoder(void) {
-+  return sizeof(wuffs_bzip2__decoder);
- }
- 
- // ---------------- Function Implementations
- 
--// -------- func deflate.decoder.add_history
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_deflate__decoder__add_history(
--    wuffs_deflate__decoder* self,
--    wuffs_base__slice_u8 a_hist) {
--  if (!self) {
--    return wuffs_base__make_empty_struct();
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_empty_struct();
--  }
--
--  wuffs_base__slice_u8 v_s = {0};
--  uint64_t v_n_copied = 0;
--  uint32_t v_already_full = 0;
--
--  v_s = a_hist;
--  if (((uint64_t)(v_s.len)) >= 32768u) {
--    v_s = wuffs_base__slice_u8__suffix(v_s, 32768u);
--    wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_history, 32768), v_s);
--    self->private_impl.f_history_index = 32768u;
--  } else {
--    v_n_copied = wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_history, (self->private_impl.f_history_index & 32767u), 32768), v_s);
--    if (v_n_copied < ((uint64_t)(v_s.len))) {
--      v_s = wuffs_base__slice_u8__subslice_i(v_s, v_n_copied);
--      v_n_copied = wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_history, 32768), v_s);
--      self->private_impl.f_history_index = (((uint32_t)((v_n_copied & 32767u))) + 32768u);
--    } else {
--      v_already_full = 0u;
--      if (self->private_impl.f_history_index >= 32768u) {
--        v_already_full = 32768u;
--      }
--      self->private_impl.f_history_index = ((self->private_impl.f_history_index & 32767u) + ((uint32_t)((v_n_copied & 32767u))) + v_already_full);
--    }
--  }
--  wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_history, 32768, 33025), wuffs_base__make_slice_u8(self->private_data.f_history, 33025));
--  return wuffs_base__make_empty_struct();
--}
--
--// -------- func deflate.decoder.get_quirk
-+// -------- func bzip2.decoder.get_quirk
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_deflate__decoder__get_quirk(
--    const wuffs_deflate__decoder* self,
-+wuffs_bzip2__decoder__get_quirk(
-+    const wuffs_bzip2__decoder* self,
-     uint32_t a_key) {
-   if (!self) {
-     return 0;
-@@ -34351,15 +34260,18 @@ wuffs_deflate__decoder__get_quirk(
-     return 0;
-   }
- 
-+  if ((a_key == 1u) && self->private_impl.f_ignore_checksum) {
-+    return 1u;
-+  }
-   return 0u;
- }
- 
--// -------- func deflate.decoder.set_quirk
-+// -------- func bzip2.decoder.set_quirk
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_deflate__decoder__set_quirk(
--    wuffs_deflate__decoder* self,
-+wuffs_bzip2__decoder__set_quirk(
-+    wuffs_bzip2__decoder* self,
-     uint32_t a_key,
-     uint64_t a_value) {
-   if (!self) {
-@@ -34372,32 +34284,36 @@ wuffs_deflate__decoder__set_quirk(
-         : wuffs_base__error__initialize_not_called);
-   }
- 
-+  if (a_key == 1u) {
-+    self->private_impl.f_ignore_checksum = (a_value > 0u);
-+    return wuffs_base__make_status(NULL);
-+  }
-   return wuffs_base__make_status(wuffs_base__error__unsupported_option);
- }
- 
--// -------- func deflate.decoder.history_retain_length
-+// -------- func bzip2.decoder.dst_history_retain_length
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_deflate__decoder__history_retain_length(
--    const wuffs_deflate__decoder* self) {
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
-+wuffs_bzip2__decoder__dst_history_retain_length(
-+    const wuffs_bzip2__decoder* self) {
-   if (!self) {
--    return 0;
-+    return wuffs_base__utility__make_optional_u63(false, 0u);
-   }
-   if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-       (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
-+    return wuffs_base__utility__make_optional_u63(false, 0u);
-   }
- 
--  return 0u;
-+  return wuffs_base__utility__make_optional_u63(true, 0u);
- }
- 
--// -------- func deflate.decoder.workbuf_len
-+// -------- func bzip2.decoder.workbuf_len
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_deflate__decoder__workbuf_len(
--    const wuffs_deflate__decoder* self) {
-+wuffs_bzip2__decoder__workbuf_len(
-+    const wuffs_bzip2__decoder* self) {
-   if (!self) {
-     return wuffs_base__utility__empty_range_ii_u64();
-   }
-@@ -34406,15 +34322,15 @@ wuffs_deflate__decoder__workbuf_len(
-     return wuffs_base__utility__empty_range_ii_u64();
-   }
- 
--  return wuffs_base__utility__make_range_ii_u64(1u, 1u);
-+  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
- }
- 
--// -------- func deflate.decoder.transform_io
-+// -------- func bzip2.decoder.transform_io
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_deflate__decoder__transform_io(
--    wuffs_deflate__decoder* self,
-+wuffs_bzip2__decoder__transform_io(
-+    wuffs_bzip2__decoder* self,
-     wuffs_base__io_buffer* a_dst,
-     wuffs_base__io_buffer* a_src,
-     wuffs_base__slice_u8 a_workbuf) {
-@@ -34441,17 +34357,17 @@ wuffs_deflate__decoder__transform_io(
- 
-   wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--  uint32_t coro_susp_point = self->private_impl.p_transform_io[0];
-+  uint32_t coro_susp_point = self->private_impl.p_transform_io;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
-     while (true) {
-       {
--        wuffs_base__status t_0 = wuffs_deflate__decoder__do_transform_io(self, a_dst, a_src, a_workbuf);
-+        wuffs_base__status t_0 = wuffs_bzip2__decoder__do_transform_io(self, a_dst, a_src, a_workbuf);
-         v_status = t_0;
-       }
-       if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_deflate__error__truncated_input);
-+        status = wuffs_base__make_status(wuffs_bzip2__error__truncated_input);
-         goto exit;
-       }
-       status = v_status;
-@@ -34459,13 +34375,13 @@ wuffs_deflate__decoder__transform_io(
-     }
- 
-     ok:
--    self->private_impl.p_transform_io[0] = 0;
-+    self->private_impl.p_transform_io = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.p_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-   self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
- 
-   goto exit;
-@@ -34476,103 +34392,22 @@ wuffs_deflate__decoder__transform_io(
-   return status;
- }
- 
--// -------- func deflate.decoder.do_transform_io
-+// -------- func bzip2.decoder.do_transform_io
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_deflate__decoder__do_transform_io(
--    wuffs_deflate__decoder* self,
-+wuffs_bzip2__decoder__do_transform_io(
-+    wuffs_bzip2__decoder* self,
-     wuffs_base__io_buffer* a_dst,
-     wuffs_base__io_buffer* a_src,
-     wuffs_base__slice_u8 a_workbuf) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint64_t v_mark = 0;
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
--
--  uint8_t* iop_a_dst = NULL;
--  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_dst && a_dst->data.ptr) {
--    io0_a_dst = a_dst->data.ptr;
--    io1_a_dst = io0_a_dst + a_dst->meta.wi;
--    iop_a_dst = io1_a_dst;
--    io2_a_dst = io0_a_dst + a_dst->data.len;
--    if (a_dst->meta.closed) {
--      io2_a_dst = iop_a_dst;
--    }
--  }
--
--  uint32_t coro_susp_point = self->private_impl.p_do_transform_io[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    self->private_impl.choosy_decode_huffman_fast64 = (
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--        wuffs_base__cpu_arch__have_x86_bmi2() ? &wuffs_deflate__decoder__decode_huffman_bmi2 :
--#endif
--        self->private_impl.choosy_decode_huffman_fast64);
--    while (true) {
--      v_mark = ((uint64_t)(iop_a_dst - io0_a_dst));
--      {
--        if (a_dst) {
--          a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--        }
--        wuffs_base__status t_0 = wuffs_deflate__decoder__decode_blocks(self, a_dst, a_src);
--        v_status = t_0;
--        if (a_dst) {
--          iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
--        }
--      }
--      if ( ! wuffs_base__status__is_suspension(&v_status)) {
--        status = v_status;
--        if (wuffs_base__status__is_error(&status)) {
--          goto exit;
--        } else if (wuffs_base__status__is_suspension(&status)) {
--          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
--          goto exit;
--        }
--        goto ok;
--      }
--      wuffs_base__u64__sat_add_indirect(&self->private_impl.f_transformed_history_count, wuffs_base__io__count_since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst))));
--      wuffs_deflate__decoder__add_history(self, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
--    }
--
--    ok:
--    self->private_impl.p_do_transform_io[0] = 0;
--    goto exit;
--  }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_do_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--
--  goto exit;
--  exit:
--  if (a_dst && a_dst->data.ptr) {
--    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--  }
--
--  return status;
--}
--
--// -------- func deflate.decoder.decode_blocks
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_deflate__decoder__decode_blocks(
--    wuffs_deflate__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  uint32_t v_final = 0;
--  uint32_t v_b0 = 0;
--  uint32_t v_type = 0;
-+  uint8_t v_c8 = 0;
-+  uint32_t v_i = 0;
-+  uint64_t v_tag = 0;
-   wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+  uint32_t v_final_checksum_want = 0;
- 
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -34585,125 +34420,206 @@ wuffs_deflate__decoder__decode_blocks(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_blocks[0];
-+  uint32_t coro_susp_point = self->private_impl.p_do_transform_io;
-   if (coro_susp_point) {
--    v_final = self->private_data.s_decode_blocks[0].v_final;
-+    v_i = self->private_data.s_do_transform_io.v_i;
-+    v_tag = self->private_data.s_do_transform_io.v_tag;
-+    v_final_checksum_want = self->private_data.s_do_transform_io.v_final_checksum_want;
-   }
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    label__outer__continue:;
--    while (v_final == 0u) {
--      while (self->private_impl.f_n_bits < 3u) {
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_0 = *iop_a_src++;
-+      v_c8 = t_0;
-+    }
-+    if (v_c8 != 66u) {
-+      status = wuffs_base__make_status(wuffs_bzip2__error__bad_header);
-+      goto exit;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_1 = *iop_a_src++;
-+      v_c8 = t_1;
-+    }
-+    if (v_c8 != 90u) {
-+      status = wuffs_base__make_status(wuffs_bzip2__error__bad_header);
-+      goto exit;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_2 = *iop_a_src++;
-+      v_c8 = t_2;
-+    }
-+    if (v_c8 != 104u) {
-+      status = wuffs_base__make_status(wuffs_bzip2__error__bad_header);
-+      goto exit;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_3 = *iop_a_src++;
-+      v_c8 = t_3;
-+    }
-+    if ((v_c8 < 49u) || (57u < v_c8)) {
-+      status = wuffs_base__make_status(wuffs_bzip2__error__bad_header);
-+      goto exit;
-+    }
-+    self->private_impl.f_max_incl_block_size = (((uint32_t)(((uint8_t)(v_c8 - 48u)))) * 100000u);
-+    while (true) {
-+      v_tag = 0u;
-+      v_i = 0u;
-+      while (v_i < 48u) {
-+        if (self->private_impl.f_n_bits <= 0u) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint8_t t_4 = *iop_a_src++;
-+            v_c8 = t_4;
-           }
--          uint32_t t_0 = *iop_a_src++;
--          v_b0 = t_0;
-+          self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
-+          self->private_impl.f_n_bits = 8u;
-         }
--        self->private_impl.f_bits |= (v_b0 << (self->private_impl.f_n_bits & 3u));
--        self->private_impl.f_n_bits = ((self->private_impl.f_n_bits & 3u) + 8u);
-+        v_tag <<= 1u;
-+        v_tag |= ((uint64_t)((self->private_impl.f_bits >> 31u)));
-+        self->private_impl.f_bits <<= 1u;
-+        self->private_impl.f_n_bits -= 1u;
-+        v_i += 1u;
-       }
--      v_final = (self->private_impl.f_bits & 1u);
--      v_type = ((self->private_impl.f_bits >> 1u) & 3u);
--      self->private_impl.f_bits >>= 3u;
--      self->private_impl.f_n_bits -= 3u;
--      if (v_type == 0u) {
-+      if (v_tag == 25779555029136u) {
-+        break;
-+      } else if (v_tag != 54156738319193u) {
-+        status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
-+        goto exit;
-+      }
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+      status = wuffs_bzip2__decoder__prepare_block(self, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+      self->private_impl.f_block_size = 0u;
-+      self->private_impl.f_decode_huffman_finished = false;
-+      self->private_impl.f_decode_huffman_which = WUFFS_BZIP2__CLAMP_TO_5[((uint8_t)(self->private_data.f_huffman_selectors[0u] & 7u))];
-+      self->private_impl.f_decode_huffman_ticks = 50u;
-+      self->private_impl.f_decode_huffman_section = 0u;
-+      self->private_impl.f_decode_huffman_run_shift = 0u;
-+      while ( ! self->private_impl.f_decode_huffman_finished) {
-         if (a_src) {
-           a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-         }
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--        status = wuffs_deflate__decoder__decode_uncompressed(self, a_dst, a_src);
-+        v_status = wuffs_bzip2__decoder__decode_huffman_fast(self, a_src);
-         if (a_src) {
-           iop_a_src = a_src->data.ptr + a_src->meta.ri;
-         }
--        if (status.repr) {
--          goto suspend;
--        }
--        continue;
--      } else if (v_type == 1u) {
--        v_status = wuffs_deflate__decoder__init_fixed_huffman(self);
--        if ( ! wuffs_base__status__is_ok(&v_status)) {
-+        if (wuffs_base__status__is_error(&v_status)) {
-           status = v_status;
--          if (wuffs_base__status__is_error(&status)) {
--            goto exit;
--          } else if (wuffs_base__status__is_suspension(&status)) {
--            status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
--            goto exit;
--          }
--          goto ok;
-+          goto exit;
-+        } else if (self->private_impl.f_decode_huffman_finished) {
-+          break;
-         }
--      } else if (v_type == 2u) {
-         if (a_src) {
-           a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-         }
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--        status = wuffs_deflate__decoder__init_dynamic_huffman(self, a_src);
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+        status = wuffs_bzip2__decoder__decode_huffman_slow(self, a_src);
-         if (a_src) {
-           iop_a_src = a_src->data.ptr + a_src->meta.ri;
-         }
-         if (status.repr) {
-           goto suspend;
-         }
--      } else {
--        status = wuffs_base__make_status(wuffs_deflate__error__bad_block);
-+      }
-+      wuffs_bzip2__decoder__invert_bwt(self);
-+      self->private_impl.f_block_checksum_have = 4294967295u;
-+      if (self->private_impl.f_original_pointer >= self->private_impl.f_block_size) {
-+        status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
-         goto exit;
-       }
--      self->private_impl.f_end_of_block = false;
--      while (true) {
--        if (sizeof(void*) == 4u) {
--          if (a_src) {
--            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--          }
--          v_status = wuffs_deflate__decoder__decode_huffman_fast32(self, a_dst, a_src);
--          if (a_src) {
--            iop_a_src = a_src->data.ptr + a_src->meta.ri;
--          }
--        } else {
--          if (a_src) {
--            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--          }
--          v_status = wuffs_deflate__decoder__decode_huffman_fast64(self, a_dst, a_src);
--          if (a_src) {
--            iop_a_src = a_src->data.ptr + a_src->meta.ri;
--          }
--        }
--        if (wuffs_base__status__is_error(&v_status)) {
--          status = v_status;
--          goto exit;
--        }
--        if (self->private_impl.f_end_of_block) {
--          goto label__outer__continue;
--        }
--        if (a_src) {
--          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--        }
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--        status = wuffs_deflate__decoder__decode_huffman_slow(self, a_dst, a_src);
--        if (a_src) {
--          iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      self->private_impl.f_flush_pointer = (self->private_data.f_bwt[self->private_impl.f_original_pointer] >> 12u);
-+      self->private_impl.f_flush_repeat_count = 0u;
-+      self->private_impl.f_flush_prev = 0u;
-+      while (self->private_impl.f_block_size > 0u) {
-+        wuffs_bzip2__decoder__flush_fast(self, a_dst);
-+        if (self->private_impl.f_block_size <= 0u) {
-+          break;
-         }
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+        status = wuffs_bzip2__decoder__flush_slow(self, a_dst);
-         if (status.repr) {
-           goto suspend;
-         }
--        if (self->private_impl.f_end_of_block) {
--          goto label__outer__continue;
-+      }
-+      self->private_impl.f_block_checksum_have ^= 4294967295u;
-+      if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_block_checksum_have != self->private_impl.f_block_checksum_want)) {
-+        status = wuffs_base__make_status(wuffs_bzip2__error__bad_checksum);
-+        goto exit;
-+      }
-+      self->private_impl.f_final_checksum_have = (self->private_impl.f_block_checksum_have ^ ((self->private_impl.f_final_checksum_have >> 31u) | ((uint32_t)(self->private_impl.f_final_checksum_have << 1u))));
-+    }
-+    v_final_checksum_want = 0u;
-+    v_i = 0u;
-+    while (v_i < 32u) {
-+      if (self->private_impl.f_n_bits <= 0u) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_5 = *iop_a_src++;
-+          v_c8 = t_5;
-         }
-+        self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
-+        self->private_impl.f_n_bits = 8u;
-       }
-+      v_final_checksum_want <<= 1u;
-+      v_final_checksum_want |= (self->private_impl.f_bits >> 31u);
-+      self->private_impl.f_bits <<= 1u;
-+      self->private_impl.f_n_bits -= 1u;
-+      v_i += 1u;
-+    }
-+    if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_final_checksum_have != v_final_checksum_want)) {
-+      status = wuffs_base__make_status(wuffs_bzip2__error__bad_checksum);
-+      goto exit;
-     }
- 
-+    goto ok;
-     ok:
--    self->private_impl.p_decode_blocks[0] = 0;
-+    self->private_impl.p_do_transform_io = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_blocks[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_decode_blocks[0].v_final = v_final;
-+  self->private_impl.p_do_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_do_transform_io.v_i = v_i;
-+  self->private_data.s_do_transform_io.v_tag = v_tag;
-+  self->private_data.s_do_transform_io.v_final_checksum_want = v_final_checksum_want;
- 
-   goto exit;
-   exit:
-@@ -34714,32 +34630,23 @@ wuffs_deflate__decoder__decode_blocks(
-   return status;
- }
- 
--// -------- func deflate.decoder.decode_uncompressed
-+// -------- func bzip2.decoder.prepare_block
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_deflate__decoder__decode_uncompressed(
--    wuffs_deflate__decoder* self,
--    wuffs_base__io_buffer* a_dst,
-+wuffs_bzip2__decoder__prepare_block(
-+    wuffs_bzip2__decoder* self,
-     wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint32_t v_length = 0;
--  uint32_t v_n_copied = 0;
-+  uint8_t v_c8 = 0;
-+  uint32_t v_i = 0;
-+  uint32_t v_j = 0;
-+  uint32_t v_selector = 0;
-+  uint32_t v_sel_ff = 0;
-+  uint8_t v_movee = 0;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--  uint8_t* iop_a_dst = NULL;
--  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_dst && a_dst->data.ptr) {
--    io0_a_dst = a_dst->data.ptr;
--    io1_a_dst = io0_a_dst + a_dst->meta.wi;
--    iop_a_dst = io1_a_dst;
--    io2_a_dst = io0_a_dst + a_dst->data.len;
--    if (a_dst->meta.closed) {
--      io2_a_dst = iop_a_dst;
--    }
--  }
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -34751,387 +34658,287 @@ wuffs_deflate__decoder__decode_uncompressed(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_uncompressed[0];
-+  uint32_t coro_susp_point = self->private_impl.p_prepare_block;
-   if (coro_susp_point) {
--    v_length = self->private_data.s_decode_uncompressed[0].v_length;
-+    v_i = self->private_data.s_prepare_block.v_i;
-+    v_selector = self->private_data.s_prepare_block.v_selector;
-   }
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
--      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
--      goto exit;
--    }
--    self->private_impl.f_n_bits = 0u;
--    self->private_impl.f_bits = 0u;
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      uint32_t t_0;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--        iop_a_src += 4;
--      } else {
--        self->private_data.s_decode_uncompressed[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--        while (true) {
-+    self->private_impl.f_block_checksum_want = 0u;
-+    v_i = 0u;
-+    while (v_i < 32u) {
-+      if (self->private_impl.f_n_bits <= 0u) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint64_t* scratch = &self->private_data.s_decode_uncompressed[0].scratch;
--          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
--          *scratch <<= 8;
--          *scratch >>= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
--          if (num_bits_0 == 24) {
--            t_0 = ((uint32_t)(*scratch));
--            break;
--          }
--          num_bits_0 += 8u;
--          *scratch |= ((uint64_t)(num_bits_0)) << 56;
-+          uint8_t t_0 = *iop_a_src++;
-+          v_c8 = t_0;
-         }
-+        self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
-+        self->private_impl.f_n_bits = 8u;
-       }
--      v_length = t_0;
--    }
--    if ((((v_length) & 0xFFFFu) + ((v_length) >> (32u - 16u))) != 65535u) {
--      status = wuffs_base__make_status(wuffs_deflate__error__inconsistent_stored_block_length);
--      goto exit;
--    }
--    v_length = ((v_length) & 0xFFFFu);
--    while (true) {
--      v_n_copied = wuffs_base__io_writer__limited_copy_u32_from_reader(
--          &iop_a_dst, io2_a_dst,v_length, &iop_a_src, io2_a_src);
--      if (v_length <= v_n_copied) {
--        status = wuffs_base__make_status(NULL);
--        goto ok;
--      }
--      v_length -= v_n_copied;
--      if (((uint64_t)(io2_a_dst - iop_a_dst)) == 0u) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
--      } else {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
--      }
-+      self->private_impl.f_block_checksum_want <<= 1u;
-+      self->private_impl.f_block_checksum_want |= (self->private_impl.f_bits >> 31u);
-+      self->private_impl.f_bits <<= 1u;
-+      self->private_impl.f_n_bits -= 1u;
-+      v_i += 1u;
-     }
--
--    ok:
--    self->private_impl.p_decode_uncompressed[0] = 0;
--    goto exit;
--  }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_uncompressed[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_decode_uncompressed[0].v_length = v_length;
--
--  goto exit;
--  exit:
--  if (a_dst && a_dst->data.ptr) {
--    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--  }
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
--
--  return status;
--}
--
--// -------- func deflate.decoder.init_fixed_huffman
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_deflate__decoder__init_fixed_huffman(
--    wuffs_deflate__decoder* self) {
--  uint32_t v_i = 0;
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
--
--  while (v_i < 144u) {
--    self->private_data.f_code_lengths[v_i] = 8u;
--    v_i += 1u;
--  }
--  while (v_i < 256u) {
--    self->private_data.f_code_lengths[v_i] = 9u;
--    v_i += 1u;
--  }
--  while (v_i < 280u) {
--    self->private_data.f_code_lengths[v_i] = 7u;
--    v_i += 1u;
--  }
--  while (v_i < 288u) {
--    self->private_data.f_code_lengths[v_i] = 8u;
--    v_i += 1u;
--  }
--  while (v_i < 320u) {
--    self->private_data.f_code_lengths[v_i] = 5u;
--    v_i += 1u;
--  }
--  v_status = wuffs_deflate__decoder__init_huff(self,
--      0u,
--      0u,
--      288u,
--      257u);
--  if (wuffs_base__status__is_error(&v_status)) {
--    return v_status;
--  }
--  v_status = wuffs_deflate__decoder__init_huff(self,
--      1u,
--      288u,
--      320u,
--      0u);
--  if (wuffs_base__status__is_error(&v_status)) {
--    return v_status;
--  }
--  return wuffs_base__make_status(NULL);
--}
--
--// -------- func deflate.decoder.init_dynamic_huffman
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_deflate__decoder__init_dynamic_huffman(
--    wuffs_deflate__decoder* self,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  uint32_t v_bits = 0;
--  uint32_t v_n_bits = 0;
--  uint32_t v_b0 = 0;
--  uint32_t v_n_lit = 0;
--  uint32_t v_n_dist = 0;
--  uint32_t v_n_clen = 0;
--  uint32_t v_i = 0;
--  uint32_t v_b1 = 0;
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
--  uint32_t v_mask = 0;
--  uint32_t v_table_entry = 0;
--  uint32_t v_table_entry_n_bits = 0;
--  uint32_t v_b2 = 0;
--  uint32_t v_n_extra_bits = 0;
--  uint8_t v_rep_symbol = 0;
--  uint32_t v_rep_count = 0;
--  uint32_t v_b3 = 0;
--
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
--
--  uint32_t coro_susp_point = self->private_impl.p_init_dynamic_huffman[0];
--  if (coro_susp_point) {
--    v_bits = self->private_data.s_init_dynamic_huffman[0].v_bits;
--    v_n_bits = self->private_data.s_init_dynamic_huffman[0].v_n_bits;
--    v_n_lit = self->private_data.s_init_dynamic_huffman[0].v_n_lit;
--    v_n_dist = self->private_data.s_init_dynamic_huffman[0].v_n_dist;
--    v_n_clen = self->private_data.s_init_dynamic_huffman[0].v_n_clen;
--    v_i = self->private_data.s_init_dynamic_huffman[0].v_i;
--    v_mask = self->private_data.s_init_dynamic_huffman[0].v_mask;
--    v_n_extra_bits = self->private_data.s_init_dynamic_huffman[0].v_n_extra_bits;
--    v_rep_symbol = self->private_data.s_init_dynamic_huffman[0].v_rep_symbol;
--    v_rep_count = self->private_data.s_init_dynamic_huffman[0].v_rep_count;
--  }
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    v_bits = self->private_impl.f_bits;
--    v_n_bits = self->private_impl.f_n_bits;
--    while (v_n_bits < 14u) {
-+    if (self->private_impl.f_n_bits <= 0u) {
-       {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-         if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-           status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-           goto suspend;
-         }
--        uint32_t t_0 = *iop_a_src++;
--        v_b0 = t_0;
-+        uint8_t t_1 = *iop_a_src++;
-+        v_c8 = t_1;
-       }
--      v_bits |= (v_b0 << v_n_bits);
--      v_n_bits += 8u;
--    }
--    v_n_lit = (((v_bits) & 0x1Fu) + 257u);
--    if (v_n_lit > 286u) {
--      status = wuffs_base__make_status(wuffs_deflate__error__bad_literal_length_code_count);
--      goto exit;
-+      self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
-+      self->private_impl.f_n_bits = 8u;
-     }
--    v_bits >>= 5u;
--    v_n_dist = (((v_bits) & 0x1Fu) + 1u);
--    if (v_n_dist > 30u) {
--      status = wuffs_base__make_status(wuffs_deflate__error__bad_distance_code_count);
-+    if ((self->private_impl.f_bits >> 31u) != 0u) {
-+      status = wuffs_base__make_status(wuffs_bzip2__error__unsupported_block_randomization);
-       goto exit;
-     }
--    v_bits >>= 5u;
--    v_n_clen = (((v_bits) & 0xFu) + 4u);
--    v_bits >>= 4u;
--    v_n_bits -= 14u;
-+    self->private_impl.f_bits <<= 1u;
-+    self->private_impl.f_n_bits -= 1u;
-+    self->private_impl.f_original_pointer = 0u;
-     v_i = 0u;
--    while (v_i < v_n_clen) {
--      while (v_n_bits < 3u) {
-+    while (v_i < 24u) {
-+      if (self->private_impl.f_n_bits <= 0u) {
-         {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint32_t t_1 = *iop_a_src++;
--          v_b1 = t_1;
-+          uint8_t t_2 = *iop_a_src++;
-+          v_c8 = t_2;
-         }
--        v_bits |= (v_b1 << v_n_bits);
--        v_n_bits += 8u;
-+        self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
-+        self->private_impl.f_n_bits = 8u;
-       }
--      self->private_data.f_code_lengths[WUFFS_DEFLATE__CODE_ORDER[v_i]] = ((uint8_t)((v_bits & 7u)));
--      v_bits >>= 3u;
--      v_n_bits -= 3u;
-+      self->private_impl.f_original_pointer <<= 1u;
-+      self->private_impl.f_original_pointer |= (self->private_impl.f_bits >> 31u);
-+      self->private_impl.f_bits <<= 1u;
-+      self->private_impl.f_n_bits -= 1u;
-       v_i += 1u;
-     }
--    while (v_i < 19u) {
--      self->private_data.f_code_lengths[WUFFS_DEFLATE__CODE_ORDER[v_i]] = 0u;
-+    v_i = 0u;
-+    while (v_i < 256u) {
-+      self->private_data.f_presence[v_i] = 0u;
-       v_i += 1u;
-     }
--    v_status = wuffs_deflate__decoder__init_huff(self,
--        0u,
--        0u,
--        19u,
--        4095u);
--    if (wuffs_base__status__is_error(&v_status)) {
--      status = v_status;
--      goto exit;
--    }
--    v_mask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u);
-     v_i = 0u;
--    while (v_i < (v_n_lit + v_n_dist)) {
--      while (true) {
--        v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_mask)];
--        v_table_entry_n_bits = (v_table_entry & 15u);
--        if (v_n_bits >= v_table_entry_n_bits) {
--          v_bits >>= v_table_entry_n_bits;
--          v_n_bits -= v_table_entry_n_bits;
--          break;
--        }
-+    while (v_i < 256u) {
-+      if (self->private_impl.f_n_bits <= 0u) {
-         {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint32_t t_2 = *iop_a_src++;
--          v_b2 = t_2;
-+          uint8_t t_3 = *iop_a_src++;
-+          v_c8 = t_3;
-         }
--        v_bits |= (v_b2 << v_n_bits);
--        v_n_bits += 8u;
-+        self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
-+        self->private_impl.f_n_bits = 8u;
-       }
--      if ((v_table_entry >> 24u) != 128u) {
--        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--        goto exit;
-+      if ((self->private_impl.f_bits >> 31u) != 0u) {
-+        self->private_data.f_presence[v_i] = 1u;
-       }
--      v_table_entry = ((v_table_entry >> 8u) & 255u);
--      if (v_table_entry < 16u) {
--        self->private_data.f_code_lengths[v_i] = ((uint8_t)(v_table_entry));
--        v_i += 1u;
-+      self->private_impl.f_bits <<= 1u;
-+      self->private_impl.f_n_bits -= 1u;
-+      v_i += 16u;
-+    }
-+    self->private_data.f_scratch = 0u;
-+    v_i = 0u;
-+    while (v_i < 256u) {
-+      if (self->private_data.f_presence[v_i] == 0u) {
-+        v_i += 16u;
-         continue;
-       }
--      v_n_extra_bits = 0u;
--      v_rep_symbol = 0u;
--      v_rep_count = 0u;
--      if (v_table_entry == 16u) {
--        v_n_extra_bits = 2u;
--        if (v_i <= 0u) {
--          status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_length_repetition);
--          goto exit;
-+      while (true) {
-+        if (self->private_impl.f_n_bits <= 0u) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint8_t t_4 = *iop_a_src++;
-+            v_c8 = t_4;
-+          }
-+          self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
-+          self->private_impl.f_n_bits = 8u;
-+        }
-+        self->private_data.f_scratch += (self->private_impl.f_bits >> 31u);
-+        self->private_data.f_presence[(v_i & 255u)] = ((uint8_t)((self->private_impl.f_bits >> 31u)));
-+        self->private_impl.f_bits <<= 1u;
-+        self->private_impl.f_n_bits -= 1u;
-+        v_i += 1u;
-+        if ((v_i & 15u) == 0u) {
-+          break;
-         }
--        v_rep_symbol = (self->private_data.f_code_lengths[(v_i - 1u)] & 15u);
--        v_rep_count = 3u;
--      } else if (v_table_entry == 17u) {
--        v_n_extra_bits = 3u;
--        v_rep_symbol = 0u;
--        v_rep_count = 3u;
--      } else if (v_table_entry == 18u) {
--        v_n_extra_bits = 7u;
--        v_rep_symbol = 0u;
--        v_rep_count = 11u;
--      } else {
--        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--        goto exit;
-       }
--      while (v_n_bits < v_n_extra_bits) {
-+    }
-+    if ((self->private_data.f_scratch < 1u) || (256u < self->private_data.f_scratch)) {
-+      status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
-+      goto exit;
-+    }
-+    self->private_impl.f_num_symbols = (self->private_data.f_scratch + 2u);
-+    self->private_data.f_scratch = 0u;
-+    v_i = 0u;
-+    while (v_i < 3u) {
-+      if (self->private_impl.f_n_bits <= 0u) {
-         {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint32_t t_3 = *iop_a_src++;
--          v_b3 = t_3;
-+          uint8_t t_5 = *iop_a_src++;
-+          v_c8 = t_5;
-         }
--        v_bits |= (v_b3 << v_n_bits);
--        v_n_bits += 8u;
-+        self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
-+        self->private_impl.f_n_bits = 8u;
-       }
--      v_rep_count += ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_n_extra_bits));
--      v_bits >>= v_n_extra_bits;
--      v_n_bits -= v_n_extra_bits;
--      while (v_rep_count > 0u) {
--        if (v_i >= (v_n_lit + v_n_dist)) {
--          status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_length_count);
--          goto exit;
-+      self->private_data.f_scratch <<= 1u;
-+      self->private_data.f_scratch |= (self->private_impl.f_bits >> 31u);
-+      self->private_impl.f_bits <<= 1u;
-+      self->private_impl.f_n_bits -= 1u;
-+      v_i += 1u;
-+    }
-+    if ((self->private_data.f_scratch < 2u) || (6u < self->private_data.f_scratch)) {
-+      status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
-+      goto exit;
-+    }
-+    self->private_impl.f_num_huffman_codes = self->private_data.f_scratch;
-+    self->private_data.f_scratch = 0u;
-+    v_i = 0u;
-+    while (v_i < 15u) {
-+      if (self->private_impl.f_n_bits <= 0u) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_6 = *iop_a_src++;
-+          v_c8 = t_6;
-         }
--        self->private_data.f_code_lengths[v_i] = v_rep_symbol;
--        v_i += 1u;
--        v_rep_count -= 1u;
-+        self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
-+        self->private_impl.f_n_bits = 8u;
-       }
-+      self->private_data.f_scratch <<= 1u;
-+      self->private_data.f_scratch |= (self->private_impl.f_bits >> 31u);
-+      self->private_impl.f_bits <<= 1u;
-+      self->private_impl.f_n_bits -= 1u;
-+      v_i += 1u;
-     }
--    if (v_i != (v_n_lit + v_n_dist)) {
--      status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_length_count);
-+    if ((self->private_data.f_scratch < 1u) || (18001u < self->private_data.f_scratch)) {
-+      status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
-       goto exit;
-     }
--    if (self->private_data.f_code_lengths[256u] == 0u) {
--      status = wuffs_base__make_status(wuffs_deflate__error__missing_end_of_block_code);
--      goto exit;
-+    self->private_impl.f_num_sections = self->private_data.f_scratch;
-+    v_i = 0u;
-+    while (v_i < self->private_impl.f_num_huffman_codes) {
-+      self->private_data.f_mtft[v_i] = ((uint8_t)(v_i));
-+      v_i += 1u;
-     }
--    v_status = wuffs_deflate__decoder__init_huff(self,
--        0u,
--        0u,
--        v_n_lit,
--        257u);
--    if (wuffs_base__status__is_error(&v_status)) {
--      status = v_status;
--      goto exit;
-+    v_i = 0u;
-+    while (v_i < self->private_impl.f_num_sections) {
-+      v_selector = 0u;
-+      while (true) {
-+        if (self->private_impl.f_n_bits <= 0u) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint8_t t_7 = *iop_a_src++;
-+            v_c8 = t_7;
-+          }
-+          self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
-+          self->private_impl.f_n_bits = 8u;
-+        }
-+        if ((self->private_impl.f_bits >> 31u) == 0u) {
-+          self->private_impl.f_bits <<= 1u;
-+          self->private_impl.f_n_bits -= 1u;
-+          break;
-+        }
-+        self->private_impl.f_bits <<= 1u;
-+        self->private_impl.f_n_bits -= 1u;
-+        v_selector += 1u;
-+        if (v_selector >= self->private_impl.f_num_huffman_codes) {
-+          status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
-+          goto exit;
-+        }
-+      }
-+      if (v_selector == 0u) {
-+        self->private_data.f_huffman_selectors[v_i] = self->private_data.f_mtft[0u];
-+      } else {
-+        v_sel_ff = (v_selector & 255u);
-+        v_movee = self->private_data.f_mtft[v_sel_ff];
-+        wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_mtft, 1, (1u + v_sel_ff)), wuffs_base__make_slice_u8(self->private_data.f_mtft, v_sel_ff));
-+        self->private_data.f_mtft[0u] = v_movee;
-+        self->private_data.f_huffman_selectors[v_i] = v_movee;
-+      }
-+      v_i += 1u;
-     }
--    v_status = wuffs_deflate__decoder__init_huff(self,
--        1u,
--        v_n_lit,
--        (v_n_lit + v_n_dist),
--        0u);
--    if (wuffs_base__status__is_error(&v_status)) {
--      status = v_status;
--      goto exit;
-+    v_i = 0u;
-+    while (v_i < self->private_impl.f_num_huffman_codes) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+      status = wuffs_bzip2__decoder__read_code_lengths(self, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+      v_status = wuffs_bzip2__decoder__build_huffman_tree(self, v_i);
-+      if (wuffs_base__status__is_error(&v_status)) {
-+        status = v_status;
-+        goto exit;
-+      }
-+      wuffs_bzip2__decoder__build_huffman_table(self, v_i);
-+      v_i += 1u;
-+    }
-+    v_i = 0u;
-+    v_j = 0u;
-+    while (v_i < 256u) {
-+      if (self->private_data.f_presence[v_i] != 0u) {
-+        self->private_data.f_mtft[(v_j & 255u)] = ((uint8_t)(v_i));
-+        v_j += 1u;
-+      }
-+      v_i += 1u;
-+    }
-+    v_i = 0u;
-+    while (v_i < 256u) {
-+      self->private_data.f_letter_counts[v_i] = 0u;
-+      v_i += 1u;
-     }
--    self->private_impl.f_bits = v_bits;
--    self->private_impl.f_n_bits = v_n_bits;
- 
-     goto ok;
-     ok:
--    self->private_impl.p_init_dynamic_huffman[0] = 0;
-+    self->private_impl.p_prepare_block = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_init_dynamic_huffman[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_init_dynamic_huffman[0].v_bits = v_bits;
--  self->private_data.s_init_dynamic_huffman[0].v_n_bits = v_n_bits;
--  self->private_data.s_init_dynamic_huffman[0].v_n_lit = v_n_lit;
--  self->private_data.s_init_dynamic_huffman[0].v_n_dist = v_n_dist;
--  self->private_data.s_init_dynamic_huffman[0].v_n_clen = v_n_clen;
--  self->private_data.s_init_dynamic_huffman[0].v_i = v_i;
--  self->private_data.s_init_dynamic_huffman[0].v_mask = v_mask;
--  self->private_data.s_init_dynamic_huffman[0].v_n_extra_bits = v_n_extra_bits;
--  self->private_data.s_init_dynamic_huffman[0].v_rep_symbol = v_rep_symbol;
--  self->private_data.s_init_dynamic_huffman[0].v_rep_count = v_rep_count;
-+  self->private_impl.p_prepare_block = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_prepare_block.v_i = v_i;
-+  self->private_data.s_prepare_block.v_selector = v_selector;
- 
-   goto exit;
-   exit:
-@@ -35142,285 +34949,295 @@ wuffs_deflate__decoder__init_dynamic_huffman(
-   return status;
- }
- 
--// -------- func deflate.decoder.init_huff
-+// -------- func bzip2.decoder.read_code_lengths
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_deflate__decoder__init_huff(
--    wuffs_deflate__decoder* self,
--    uint32_t a_which,
--    uint32_t a_n_codes0,
--    uint32_t a_n_codes1,
--    uint32_t a_base_symbol) {
--  uint16_t v_counts[16] = {0};
-+wuffs_bzip2__decoder__read_code_lengths(
-+    wuffs_bzip2__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_c8 = 0;
-   uint32_t v_i = 0;
--  uint32_t v_remaining = 0;
--  uint16_t v_offsets[16] = {0};
--  uint32_t v_n_symbols = 0;
--  uint32_t v_count = 0;
--  uint16_t v_symbols[320] = {0};
--  uint32_t v_min_cl = 0;
--  uint32_t v_max_cl = 0;
--  uint32_t v_initial_high_bits = 0;
--  uint32_t v_prev_cl = 0;
--  uint32_t v_prev_redirect_key = 0;
--  uint32_t v_top = 0;
--  uint32_t v_next_top = 0;
--  uint32_t v_code = 0;
--  uint32_t v_key = 0;
--  uint32_t v_value = 0;
--  uint32_t v_cl = 0;
--  uint32_t v_redirect_key = 0;
--  uint32_t v_j = 0;
--  uint32_t v_reversed_key = 0;
--  uint32_t v_symbol = 0;
--  uint32_t v_high_bits = 0;
--  uint32_t v_delta = 0;
-+  uint32_t v_code_length = 0;
- 
--  v_i = a_n_codes0;
--  while (v_i < a_n_codes1) {
--    if (v_counts[(self->private_data.f_code_lengths[v_i] & 15u)] >= 320u) {
--      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--    }
--#if defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wconversion"
--#endif
--    v_counts[(self->private_data.f_code_lengths[v_i] & 15u)] += 1u;
--#if defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--    v_i += 1u;
--  }
--  if ((((uint32_t)(v_counts[0u])) + a_n_codes0) == a_n_codes1) {
--    return wuffs_base__make_status(wuffs_deflate__error__no_huffman_codes);
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-   }
--  v_remaining = 1u;
--  v_i = 1u;
--  while (v_i <= 15u) {
--    if (v_remaining > 1073741824u) {
--      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--    }
--    v_remaining <<= 1u;
--    if (v_remaining < ((uint32_t)(v_counts[v_i]))) {
--      return wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_over_subscribed);
--    }
--    v_remaining -= ((uint32_t)(v_counts[v_i]));
--    v_i += 1u;
-+
-+  uint32_t coro_susp_point = self->private_impl.p_read_code_lengths;
-+  if (coro_susp_point) {
-+    v_i = self->private_data.s_read_code_lengths.v_i;
-+    v_code_length = self->private_data.s_read_code_lengths.v_code_length;
-   }
--  if (v_remaining != 0u) {
--    if ((a_which == 1u) && (v_counts[1u] == 1u) && ((((uint32_t)(v_counts[0u])) + a_n_codes0 + 1u) == a_n_codes1)) {
--      v_i = 0u;
--      while (v_i <= 29u) {
--        if (self->private_data.f_code_lengths[(a_n_codes0 + v_i)] == 1u) {
--          self->private_impl.f_n_huffs_bits[1u] = 1u;
--          self->private_data.f_huffs[1u][0u] = (WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[v_i] | 1u);
--          self->private_data.f_huffs[1u][1u] = (WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[31u] | 1u);
--          return wuffs_base__make_status(NULL);
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    self->private_impl.f_code_lengths_bitmask = 0u;
-+    v_i = 0u;
-+    while (v_i < 5u) {
-+      if (self->private_impl.f_n_bits <= 0u) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_0 = *iop_a_src++;
-+          v_c8 = t_0;
-         }
--        v_i += 1u;
-+        self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
-+        self->private_impl.f_n_bits = 8u;
-       }
-+      v_code_length <<= 1u;
-+      v_code_length |= (self->private_impl.f_bits >> 31u);
-+      self->private_impl.f_bits <<= 1u;
-+      self->private_impl.f_n_bits -= 1u;
-+      v_i += 1u;
-     }
--    return wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_under_subscribed);
--  }
--  v_i = 1u;
--  while (v_i <= 15u) {
--    v_offsets[v_i] = ((uint16_t)(v_n_symbols));
--    v_count = ((uint32_t)(v_counts[v_i]));
--    if (v_n_symbols > (320u - v_count)) {
--      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--    }
--    v_n_symbols = (v_n_symbols + v_count);
--    v_i += 1u;
--  }
--  if (v_n_symbols > 288u) {
--    return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--  }
--  v_i = a_n_codes0;
--  while (v_i < a_n_codes1) {
--    if (v_i < a_n_codes0) {
--      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--    }
--    if (self->private_data.f_code_lengths[v_i] != 0u) {
--      if (v_offsets[(self->private_data.f_code_lengths[v_i] & 15u)] >= 320u) {
--        return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+    v_i = 0u;
-+    while (v_i < self->private_impl.f_num_symbols) {
-+      while (true) {
-+        if ((v_code_length < 1u) || (20u < v_code_length)) {
-+          status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
-+          goto exit;
-+        }
-+        if (self->private_impl.f_n_bits <= 0u) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint8_t t_1 = *iop_a_src++;
-+            v_c8 = t_1;
-+          }
-+          self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
-+          self->private_impl.f_n_bits = 8u;
-+        }
-+        if ((self->private_impl.f_bits >> 31u) == 0u) {
-+          self->private_impl.f_bits <<= 1u;
-+          self->private_impl.f_n_bits -= 1u;
-+          break;
-+        }
-+        self->private_impl.f_bits <<= 1u;
-+        self->private_impl.f_n_bits -= 1u;
-+        if (self->private_impl.f_n_bits <= 0u) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint8_t t_2 = *iop_a_src++;
-+            v_c8 = t_2;
-+          }
-+          self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
-+          self->private_impl.f_n_bits = 8u;
-+        }
-+        if ((self->private_impl.f_bits >> 31u) == 0u) {
-+          v_code_length += 1u;
-+        } else {
-+          v_code_length -= 1u;
-+        }
-+        self->private_impl.f_bits <<= 1u;
-+        self->private_impl.f_n_bits -= 1u;
-       }
--      v_symbols[v_offsets[(self->private_data.f_code_lengths[v_i] & 15u)]] = ((uint16_t)((v_i - a_n_codes0)));
--#if defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wconversion"
--#endif
--      v_offsets[(self->private_data.f_code_lengths[v_i] & 15u)] += 1u;
--#if defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--    }
--    v_i += 1u;
--  }
--  v_min_cl = 1u;
--  while (true) {
--    if (v_counts[v_min_cl] != 0u) {
--      break;
--    }
--    if (v_min_cl >= 9u) {
--      return wuffs_base__make_status(wuffs_deflate__error__bad_huffman_minimum_code_length);
--    }
--    v_min_cl += 1u;
--  }
--  v_max_cl = 15u;
--  while (true) {
--    if (v_counts[v_max_cl] != 0u) {
--      break;
--    }
--    if (v_max_cl <= 1u) {
--      return wuffs_base__make_status(wuffs_deflate__error__no_huffman_codes);
-+      self->private_impl.f_code_lengths_bitmask |= (((uint32_t)(1u)) << (v_code_length & 31u));
-+      self->private_data.f_bwt[v_i] = v_code_length;
-+      v_i += 1u;
-     }
--    v_max_cl -= 1u;
--  }
--  if (v_max_cl <= 9u) {
--    self->private_impl.f_n_huffs_bits[a_which] = v_max_cl;
--  } else {
--    self->private_impl.f_n_huffs_bits[a_which] = 9u;
--  }
--  v_i = 0u;
--  if ((v_n_symbols != ((uint32_t)(v_offsets[v_max_cl]))) || (v_n_symbols != ((uint32_t)(v_offsets[15u])))) {
--    return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--  }
--  if ((a_n_codes0 + ((uint32_t)(v_symbols[0u]))) >= 320u) {
--    return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_read_code_lengths = 0;
-+    goto exit;
-   }
--  v_initial_high_bits = 512u;
--  if (v_max_cl < 9u) {
--    v_initial_high_bits = (((uint32_t)(1u)) << v_max_cl);
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_read_code_lengths = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_read_code_lengths.v_i = v_i;
-+  self->private_data.s_read_code_lengths.v_code_length = v_code_length;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
--  v_prev_cl = ((uint32_t)((self->private_data.f_code_lengths[(a_n_codes0 + ((uint32_t)(v_symbols[0u])))] & 15u)));
--  v_prev_redirect_key = 4294967295u;
--  v_top = 0u;
--  v_next_top = 512u;
--  v_code = 0u;
--  v_key = 0u;
--  v_value = 0u;
--  while (true) {
--    if ((a_n_codes0 + ((uint32_t)(v_symbols[v_i]))) >= 320u) {
--      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+
-+  return status;
-+}
-+
-+// -------- func bzip2.decoder.build_huffman_tree
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_bzip2__decoder__build_huffman_tree(
-+    wuffs_bzip2__decoder* self,
-+    uint32_t a_which) {
-+  uint32_t v_code_length = 0;
-+  uint32_t v_symbol_index = 0;
-+  uint32_t v_num_branch_nodes = 0;
-+  uint32_t v_stack_height = 0;
-+  uint32_t v_stack_values[21] = {0};
-+  uint32_t v_node_index = 0;
-+  uint16_t v_leaf_value = 0;
-+
-+  self->private_data.f_huffman_trees[a_which][0u][0u] = 0u;
-+  self->private_data.f_huffman_trees[a_which][0u][1u] = 0u;
-+  v_num_branch_nodes = 1u;
-+  v_stack_height = 1u;
-+  v_stack_values[0u] = 0u;
-+  v_code_length = 1u;
-+  while (v_code_length <= 20u) {
-+    if ((self->private_impl.f_code_lengths_bitmask & (((uint32_t)(1u)) << v_code_length)) == 0u) {
-+      v_code_length += 1u;
-+      continue;
-     }
--    v_cl = ((uint32_t)((self->private_data.f_code_lengths[(a_n_codes0 + ((uint32_t)(v_symbols[v_i])))] & 15u)));
--    if (v_cl > v_prev_cl) {
--      v_code <<= (v_cl - v_prev_cl);
--      if (v_code >= 32768u) {
--        return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+    v_symbol_index = 0u;
-+    while (v_symbol_index < self->private_impl.f_num_symbols) {
-+      if (self->private_data.f_bwt[v_symbol_index] != v_code_length) {
-+        v_symbol_index += 1u;
-+        continue;
-       }
--    }
--    v_prev_cl = v_cl;
--    v_key = v_code;
--    if (v_cl > 9u) {
--      v_cl -= 9u;
--      v_redirect_key = ((v_key >> v_cl) & 511u);
--      v_key = ((v_key) & WUFFS_BASE__LOW_BITS_MASK__U32(v_cl));
--      if (v_prev_redirect_key != v_redirect_key) {
--        v_prev_redirect_key = v_redirect_key;
--        v_remaining = (((uint32_t)(1u)) << v_cl);
--        v_j = v_prev_cl;
--        while (v_j <= 15u) {
--          if (v_remaining <= ((uint32_t)(v_counts[v_j]))) {
--            break;
--          }
--          v_remaining -= ((uint32_t)(v_counts[v_j]));
--          if (v_remaining > 1073741824u) {
--            return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--          }
--          v_remaining <<= 1u;
--          v_j += 1u;
-+      while (true) {
-+        if (v_stack_height <= 0u) {
-+          return wuffs_base__make_status(wuffs_bzip2__error__bad_huffman_code_over_subscribed);
-+        } else if (v_stack_height >= v_code_length) {
-+          break;
-         }
--        if ((v_j <= 9u) || (15u < v_j)) {
--          return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+        v_node_index = v_stack_values[(v_stack_height - 1u)];
-+        if (self->private_data.f_huffman_trees[a_which][v_node_index][0u] == 0u) {
-+          self->private_data.f_huffman_trees[a_which][v_node_index][0u] = ((uint16_t)(v_num_branch_nodes));
-+        } else {
-+          self->private_data.f_huffman_trees[a_which][v_node_index][1u] = ((uint16_t)(v_num_branch_nodes));
-         }
--        v_j -= 9u;
--        v_initial_high_bits = (((uint32_t)(1u)) << v_j);
--        v_top = v_next_top;
--        if ((v_top + (((uint32_t)(1u)) << v_j)) > 1024u) {
--          return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+        if (v_num_branch_nodes >= 257u) {
-+          return wuffs_base__make_status(wuffs_bzip2__error__bad_huffman_code_under_subscribed);
-         }
--        v_next_top = (v_top + (((uint32_t)(1u)) << v_j));
--        v_redirect_key = (((uint32_t)(WUFFS_DEFLATE__REVERSE8[(v_redirect_key >> 1u)])) | ((v_redirect_key & 1u) << 8u));
--        self->private_data.f_huffs[a_which][v_redirect_key] = (268435465u | (v_top << 8u) | (v_j << 4u));
-+        v_stack_values[v_stack_height] = v_num_branch_nodes;
-+        self->private_data.f_huffman_trees[a_which][v_num_branch_nodes][0u] = 0u;
-+        self->private_data.f_huffman_trees[a_which][v_num_branch_nodes][1u] = 0u;
-+        v_num_branch_nodes += 1u;
-+        v_stack_height += 1u;
-       }
-+      v_node_index = v_stack_values[(v_stack_height - 1u)];
-+      if (v_symbol_index < 2u) {
-+        v_leaf_value = ((uint16_t)((769u + v_symbol_index)));
-+      } else if ((v_symbol_index + 1u) < self->private_impl.f_num_symbols) {
-+        v_leaf_value = ((uint16_t)((511u + v_symbol_index)));
-+      } else {
-+        v_leaf_value = 768u;
-+      }
-+      if (self->private_data.f_huffman_trees[a_which][v_node_index][0u] == 0u) {
-+        self->private_data.f_huffman_trees[a_which][v_node_index][0u] = v_leaf_value;
-+      } else {
-+        self->private_data.f_huffman_trees[a_which][v_node_index][1u] = v_leaf_value;
-+        v_stack_height -= 1u;
-+        while (v_stack_height > 0u) {
-+          v_node_index = v_stack_values[(v_stack_height - 1u)];
-+          if (self->private_data.f_huffman_trees[a_which][v_node_index][1u] == 0u) {
-+            break;
-+          }
-+          v_stack_height -= 1u;
-+        }
-+      }
-+      v_symbol_index += 1u;
-     }
--    if ((v_key >= 512u) || (v_counts[v_prev_cl] <= 0u)) {
--      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--    }
-+    v_code_length += 1u;
-+  }
-+  if (v_stack_height != 0u) {
-+    return wuffs_base__make_status(wuffs_bzip2__error__bad_huffman_code_under_subscribed);
-+  }
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+// -------- func bzip2.decoder.build_huffman_table
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_bzip2__decoder__build_huffman_table(
-+    wuffs_bzip2__decoder* self,
-+    uint32_t a_which) {
-+  uint32_t v_i = 0;
-+  uint32_t v_bits = 0;
-+  uint16_t v_n_bits = 0;
-+  uint16_t v_child = 0;
-+
-+  while (v_i < 256u) {
-+    v_bits = (v_i << 24u);
-+    v_n_bits = 0u;
-+    v_child = 0u;
-+    while ((v_child < 257u) && (v_n_bits < 8u)) {
-+      v_child = self->private_data.f_huffman_trees[a_which][v_child][(v_bits >> 31u)];
-+      v_bits <<= 1u;
- #if defined(__GNUC__)
- #pragma GCC diagnostic push
- #pragma GCC diagnostic ignored "-Wconversion"
- #endif
--    v_counts[v_prev_cl] -= 1u;
-+      v_n_bits += 1u;
- #if defined(__GNUC__)
- #pragma GCC diagnostic pop
- #endif
--    v_reversed_key = (((uint32_t)(WUFFS_DEFLATE__REVERSE8[(v_key >> 1u)])) | ((v_key & 1u) << 8u));
--    v_reversed_key >>= (9u - v_cl);
--    v_symbol = ((uint32_t)(v_symbols[v_i]));
--    if (v_symbol == 256u) {
--      v_value = (536870912u | v_cl);
--    } else if ((v_symbol < 256u) && (a_which == 0u)) {
--      v_value = (2147483648u | (v_symbol << 8u) | v_cl);
--    } else if (v_symbol >= a_base_symbol) {
--      v_symbol -= a_base_symbol;
--      if (a_which == 0u) {
--        v_value = (WUFFS_DEFLATE__LCODE_MAGIC_NUMBERS[(v_symbol & 31u)] | v_cl);
--      } else {
--        v_value = (WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[(v_symbol & 31u)] | v_cl);
--      }
--    } else {
--      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--    }
--    v_high_bits = v_initial_high_bits;
--    v_delta = (((uint32_t)(1u)) << v_cl);
--    while (v_high_bits >= v_delta) {
--      v_high_bits -= v_delta;
--      if ((v_top + ((v_high_bits | v_reversed_key) & 511u)) >= 1024u) {
--        return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--      }
--      self->private_data.f_huffs[a_which][(v_top + ((v_high_bits | v_reversed_key) & 511u))] = v_value;
-     }
-+    self->private_data.f_huffman_tables[a_which][v_i] = ((uint16_t)(((uint16_t)(v_child | ((uint16_t)(v_n_bits << 12u))))));
-     v_i += 1u;
--    if (v_i >= v_n_symbols) {
--      break;
--    }
--    v_code += 1u;
--    if (v_code >= 32768u) {
--      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--    }
-   }
--  return wuffs_base__make_status(NULL);
-+  return wuffs_base__make_empty_struct();
- }
- 
--// ‼ WUFFS MULTI-FILE SECTION +x86_bmi2
--// -------- func deflate.decoder.decode_huffman_bmi2
-+// -------- func bzip2.decoder.invert_bwt
- 
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("bmi2")
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_deflate__decoder__decode_huffman_bmi2(
--    wuffs_deflate__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+static wuffs_base__empty_struct
-+wuffs_bzip2__decoder__invert_bwt(
-+    wuffs_bzip2__decoder* self) {
-+  uint32_t v_i = 0;
-+  uint32_t v_letter = 0;
-+  uint32_t v_sum = 0;
-+  uint32_t v_old_sum = 0;
- 
--  uint64_t v_bits = 0;
--  uint32_t v_n_bits = 0;
--  uint32_t v_table_entry = 0;
--  uint32_t v_table_entry_n_bits = 0;
--  uint64_t v_lmask = 0;
--  uint64_t v_dmask = 0;
--  uint32_t v_redir_top = 0;
--  uint32_t v_redir_mask = 0;
--  uint32_t v_length = 0;
--  uint32_t v_dist_minus_1 = 0;
--  uint32_t v_hlen = 0;
--  uint32_t v_hdist = 0;
--  uint32_t v_hdist_adjustment = 0;
-+  v_sum = 0u;
-+  v_i = 0u;
-+  while (v_i < 256u) {
-+    v_old_sum = v_sum;
-+    v_sum += self->private_data.f_letter_counts[v_i];
-+    self->private_data.f_letter_counts[v_i] = v_old_sum;
-+    v_i += 1u;
-+  }
-+  v_i = 0u;
-+  while (v_i < self->private_impl.f_block_size) {
-+    v_letter = (self->private_data.f_bwt[v_i] & 255u);
-+    self->private_data.f_bwt[(self->private_data.f_letter_counts[v_letter] & 1048575u)] |= (v_i << 12u);
-+    self->private_data.f_letter_counts[v_letter] += 1u;
-+    v_i += 1u;
-+  }
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+// -------- func bzip2.decoder.flush_fast
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_bzip2__decoder__flush_fast(
-+    wuffs_bzip2__decoder* self,
-+    wuffs_base__io_buffer* a_dst) {
-+  uint32_t v_flush_pointer = 0;
-+  uint32_t v_flush_repeat_count = 0;
-+  uint8_t v_flush_prev = 0;
-+  uint32_t v_block_checksum_have = 0;
-+  uint32_t v_block_size = 0;
-+  uint32_t v_entry = 0;
-+  uint8_t v_curr = 0;
- 
-   uint8_t* iop_a_dst = NULL;
-   uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -35435,217 +35252,204 @@ wuffs_deflate__decoder__decode_huffman_bmi2(
-       io2_a_dst = iop_a_dst;
-     }
-   }
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
- 
--  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
--    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
--    goto exit;
--  }
--  v_bits = ((uint64_t)(self->private_impl.f_bits));
--  v_n_bits = self->private_impl.f_n_bits;
--  v_lmask = ((((uint64_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u);
--  v_dmask = ((((uint64_t)(1u)) << self->private_impl.f_n_huffs_bits[1u]) - 1u);
--  if (self->private_impl.f_transformed_history_count < (a_dst ? a_dst->meta.pos : 0u)) {
--    status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position);
--    goto exit;
-+  v_flush_pointer = self->private_impl.f_flush_pointer;
-+  v_flush_repeat_count = self->private_impl.f_flush_repeat_count;
-+  v_flush_prev = self->private_impl.f_flush_prev;
-+  v_block_checksum_have = self->private_impl.f_block_checksum_have;
-+  v_block_size = self->private_impl.f_block_size;
-+  while ((v_block_size > 0u) && (((uint64_t)(io2_a_dst - iop_a_dst)) >= 255u)) {
-+    if (v_flush_repeat_count < 4u) {
-+      v_entry = self->private_data.f_bwt[v_flush_pointer];
-+      v_curr = ((uint8_t)(v_entry));
-+      v_flush_pointer = (v_entry >> 12u);
-+      if (v_curr == v_flush_prev) {
-+        v_flush_repeat_count += 1u;
-+      } else {
-+        v_flush_repeat_count = 1u;
-+      }
-+      v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[((uint8_t)(((uint8_t)((v_block_checksum_have >> 24u))) ^ v_curr))] ^ ((uint32_t)(v_block_checksum_have << 8u)));
-+      (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_curr), iop_a_dst += 1);
-+      v_flush_prev = v_curr;
-+      v_block_size -= 1u;
-+    } else {
-+      v_entry = self->private_data.f_bwt[v_flush_pointer];
-+      v_curr = ((uint8_t)(v_entry));
-+      v_flush_pointer = (v_entry >> 12u);
-+      v_flush_repeat_count = ((uint32_t)(v_curr));
-+      while (v_flush_repeat_count > 0u) {
-+        v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[((uint8_t)(((uint8_t)((v_block_checksum_have >> 24u))) ^ v_flush_prev))] ^ ((uint32_t)(v_block_checksum_have << 8u)));
-+        if (((uint64_t)(io2_a_dst - iop_a_dst)) > 0u) {
-+          (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_flush_prev), iop_a_dst += 1);
-+        }
-+        v_flush_repeat_count -= 1u;
-+      }
-+      v_flush_repeat_count = 0u;
-+      v_flush_prev = v_curr;
-+      v_block_size -= 1u;
-+    }
-   }
--  v_hdist_adjustment = ((uint32_t)((self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0u))));
--  label__loop__continue:;
--  while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 266u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 8u)) {
--    v_bits |= ((uint64_t)(wuffs_base__peek_u64le__no_bounds_check(iop_a_src) << (v_n_bits & 63u)));
--    iop_a_src += ((63u - (v_n_bits & 63u)) >> 3u);
--    v_n_bits |= 56u;
--    v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_lmask)];
--    v_table_entry_n_bits = (v_table_entry & 15u);
--    v_bits >>= v_table_entry_n_bits;
--    v_n_bits -= v_table_entry_n_bits;
--    if ((v_table_entry >> 31u) != 0u) {
--      (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
--      continue;
--    } else if ((v_table_entry >> 30u) != 0u) {
--    } else if ((v_table_entry >> 29u) != 0u) {
--      self->private_impl.f_end_of_block = true;
--      break;
--    } else if ((v_table_entry >> 28u) != 0u) {
--      v_redir_top = ((v_table_entry >> 8u) & 65535u);
--      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
--      v_table_entry = self->private_data.f_huffs[0u][((v_redir_top + (((uint32_t)(v_bits)) & v_redir_mask)) & 1023u)];
--      v_table_entry_n_bits = (v_table_entry & 15u);
--      v_bits >>= v_table_entry_n_bits;
--      v_n_bits -= v_table_entry_n_bits;
--      if ((v_table_entry >> 31u) != 0u) {
--        (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
--        continue;
--      } else if ((v_table_entry >> 30u) != 0u) {
--      } else if ((v_table_entry >> 29u) != 0u) {
--        self->private_impl.f_end_of_block = true;
--        break;
--      } else if ((v_table_entry >> 28u) != 0u) {
--        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--        goto exit;
--      } else if ((v_table_entry >> 27u) != 0u) {
--        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
--        goto exit;
--      } else {
--        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--        goto exit;
--      }
--    } else if ((v_table_entry >> 27u) != 0u) {
--      status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
--      goto exit;
--    } else {
--      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--      goto exit;
--    }
--    v_length = (((v_table_entry >> 8u) & 255u) + 3u);
--    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
--    if (v_table_entry_n_bits > 0u) {
--      v_length = (((v_length + 253u + ((uint32_t)(((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 255u) + 3u);
--      v_bits >>= v_table_entry_n_bits;
--      v_n_bits -= v_table_entry_n_bits;
--    }
--    v_table_entry = self->private_data.f_huffs[1u][(v_bits & v_dmask)];
--    v_table_entry_n_bits = (v_table_entry & 15u);
--    v_bits >>= v_table_entry_n_bits;
--    v_n_bits -= v_table_entry_n_bits;
--    if ((v_table_entry >> 28u) == 1u) {
--      v_redir_top = ((v_table_entry >> 8u) & 65535u);
--      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
--      v_table_entry = self->private_data.f_huffs[1u][((v_redir_top + (((uint32_t)(v_bits)) & v_redir_mask)) & 1023u)];
--      v_table_entry_n_bits = (v_table_entry & 15u);
--      v_bits >>= v_table_entry_n_bits;
--      v_n_bits -= v_table_entry_n_bits;
--    }
--    if ((v_table_entry >> 24u) != 64u) {
--      if ((v_table_entry >> 24u) == 8u) {
--        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
--        goto exit;
--      }
--      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--      goto exit;
-+  self->private_impl.f_flush_pointer = v_flush_pointer;
-+  self->private_impl.f_flush_repeat_count = v_flush_repeat_count;
-+  self->private_impl.f_flush_prev = v_flush_prev;
-+  self->private_impl.f_block_checksum_have = v_block_checksum_have;
-+  if (v_block_size <= 900000u) {
-+    self->private_impl.f_block_size = v_block_size;
-+  }
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+  }
-+
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+// -------- func bzip2.decoder.flush_slow
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_bzip2__decoder__flush_slow(
-+    wuffs_bzip2__decoder* self,
-+    wuffs_base__io_buffer* a_dst) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint32_t v_flush_pointer = 0;
-+  uint32_t v_flush_repeat_count = 0;
-+  uint8_t v_flush_prev = 0;
-+  uint32_t v_block_checksum_have = 0;
-+  uint32_t v_block_size = 0;
-+  uint32_t v_entry = 0;
-+  uint8_t v_curr = 0;
-+
-+  uint8_t* iop_a_dst = NULL;
-+  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-     }
--    v_dist_minus_1 = ((v_table_entry >> 8u) & 32767u);
--    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
--    v_dist_minus_1 = ((v_dist_minus_1 + ((uint32_t)(((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 32767u);
--    v_bits >>= v_table_entry_n_bits;
--    v_n_bits -= v_table_entry_n_bits;
--    do {
--      if (((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
--        v_hlen = 0u;
--        v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1u))) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
--        if (v_length > v_hdist) {
--          v_length -= v_hdist;
--          v_hlen = v_hdist;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_flush_slow;
-+  if (coro_susp_point) {
-+    v_flush_pointer = self->private_data.s_flush_slow.v_flush_pointer;
-+    v_flush_repeat_count = self->private_data.s_flush_slow.v_flush_repeat_count;
-+    v_flush_prev = self->private_data.s_flush_slow.v_flush_prev;
-+    v_block_checksum_have = self->private_data.s_flush_slow.v_block_checksum_have;
-+    v_block_size = self->private_data.s_flush_slow.v_block_size;
-+    v_curr = self->private_data.s_flush_slow.v_curr;
-+  }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    v_flush_pointer = self->private_impl.f_flush_pointer;
-+    v_flush_repeat_count = self->private_impl.f_flush_repeat_count;
-+    v_flush_prev = self->private_impl.f_flush_prev;
-+    v_block_checksum_have = self->private_impl.f_block_checksum_have;
-+    v_block_size = self->private_impl.f_block_size;
-+    while ((v_block_size > 0u) &&  ! (self->private_impl.p_flush_slow != 0)) {
-+      if (v_flush_repeat_count < 4u) {
-+        v_entry = self->private_data.f_bwt[v_flush_pointer];
-+        v_curr = ((uint8_t)(v_entry));
-+        v_flush_pointer = (v_entry >> 12u);
-+        if (v_curr == v_flush_prev) {
-+          v_flush_repeat_count += 1u;
-         } else {
--          v_hlen = v_length;
--          v_length = 0u;
--        }
--        v_hdist += v_hdist_adjustment;
--        if (self->private_impl.f_history_index < v_hdist) {
--          status = wuffs_base__make_status(wuffs_deflate__error__bad_distance);
--          goto exit;
--        }
--        wuffs_base__io_writer__limited_copy_u32_from_slice(
--            &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767u), 33025));
--        if (v_length == 0u) {
--          goto label__loop__continue;
-+          v_flush_repeat_count = 1u;
-         }
--        if ((((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) || (((uint64_t)(v_length)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_length + 8u))) > ((uint64_t)(io2_a_dst - iop_a_dst)))) {
--          status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_distance);
--          goto exit;
-+        v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[((uint8_t)(((uint8_t)((v_block_checksum_have >> 24u))) ^ v_curr))] ^ ((uint32_t)(v_block_checksum_have << 8u)));
-+        self->private_data.s_flush_slow.scratch = v_curr;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        if (iop_a_dst == io2_a_dst) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+          goto suspend;
-         }
--      }
--      if ((v_dist_minus_1 + 1u) >= 8u) {
--        wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast(
--            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
--      } else if ((v_dist_minus_1 + 1u) == 1u) {
--        wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast(
--            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
-+        *iop_a_dst++ = ((uint8_t)(self->private_data.s_flush_slow.scratch));
-+        v_flush_prev = v_curr;
-+        v_block_size -= 1u;
-       } else {
--        wuffs_base__io_writer__limited_copy_u32_from_history_fast(
--            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
-+        v_entry = self->private_data.f_bwt[v_flush_pointer];
-+        v_curr = ((uint8_t)(v_entry));
-+        v_flush_pointer = (v_entry >> 12u);
-+        v_flush_repeat_count = ((uint32_t)(v_curr));
-+        while (v_flush_repeat_count > 0u) {
-+          v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[((uint8_t)(((uint8_t)((v_block_checksum_have >> 24u))) ^ v_flush_prev))] ^ ((uint32_t)(v_block_checksum_have << 8u)));
-+          self->private_data.s_flush_slow.scratch = v_flush_prev;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+          if (iop_a_dst == io2_a_dst) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+            goto suspend;
-+          }
-+          *iop_a_dst++ = ((uint8_t)(self->private_data.s_flush_slow.scratch));
-+          v_flush_repeat_count -= 1u;
-+        }
-+        v_flush_repeat_count = 0u;
-+        v_flush_prev = v_curr;
-+        v_block_size -= 1u;
-       }
--    } while (0);
--  }
--  if (v_n_bits > 63u) {
--    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
--    goto exit;
--  }
--  while (v_n_bits >= 8u) {
--    v_n_bits -= 8u;
--    if (iop_a_src > io1_a_src) {
--      iop_a_src--;
--    } else {
--      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_i_o);
--      goto exit;
-     }
--  }
--  self->private_impl.f_bits = ((uint32_t)((v_bits & ((((uint64_t)(1u)) << v_n_bits) - 1u))));
--  self->private_impl.f_n_bits = v_n_bits;
--  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> self->private_impl.f_n_bits) != 0u)) {
--    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
-+    self->private_impl.f_flush_pointer = v_flush_pointer;
-+    self->private_impl.f_flush_repeat_count = v_flush_repeat_count;
-+    self->private_impl.f_flush_prev = v_flush_prev;
-+    self->private_impl.f_block_checksum_have = v_block_checksum_have;
-+    if (v_block_size <= 900000u) {
-+      self->private_impl.f_block_size = v_block_size;
-+    }
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_flush_slow = 0;
-     goto exit;
-   }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_flush_slow = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_flush_slow.v_flush_pointer = v_flush_pointer;
-+  self->private_data.s_flush_slow.v_flush_repeat_count = v_flush_repeat_count;
-+  self->private_data.s_flush_slow.v_flush_prev = v_flush_prev;
-+  self->private_data.s_flush_slow.v_block_checksum_have = v_block_checksum_have;
-+  self->private_data.s_flush_slow.v_block_size = v_block_size;
-+  self->private_data.s_flush_slow.v_curr = v_curr;
-+
-   goto exit;
-   exit:
-   if (a_dst && a_dst->data.ptr) {
-     a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-   }
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
- 
-   return status;
- }
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--// ‼ WUFFS MULTI-FILE SECTION -x86_bmi2
- 
--// -------- func deflate.decoder.decode_huffman_fast32
-+// -------- func bzip2.decoder.decode_huffman_fast
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_deflate__decoder__decode_huffman_fast32(
--    wuffs_deflate__decoder* self,
--    wuffs_base__io_buffer* a_dst,
-+wuffs_bzip2__decoder__decode_huffman_fast(
-+    wuffs_bzip2__decoder* self,
-     wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
-   uint32_t v_bits = 0;
-   uint32_t v_n_bits = 0;
--  uint32_t v_table_entry = 0;
--  uint32_t v_table_entry_n_bits = 0;
--  uint32_t v_lmask = 0;
--  uint32_t v_dmask = 0;
--  uint32_t v_redir_top = 0;
--  uint32_t v_redir_mask = 0;
--  uint32_t v_length = 0;
--  uint32_t v_dist_minus_1 = 0;
--  uint32_t v_hlen = 0;
--  uint32_t v_hdist = 0;
--  uint32_t v_hdist_adjustment = 0;
-+  uint32_t v_block_size = 0;
-+  uint8_t v_which = 0;
-+  uint32_t v_ticks = 0;
-+  uint32_t v_section = 0;
-+  uint32_t v_run_shift = 0;
-+  uint16_t v_table_entry = 0;
-+  uint16_t v_child = 0;
-+  uint32_t v_child_ff = 0;
-+  uint32_t v_i = 0;
-+  uint32_t v_j = 0;
-+  uint32_t v_output = 0;
-+  uint32_t v_run = 0;
-+  uint32_t v_mtft0 = 0;
- 
--  uint8_t* iop_a_dst = NULL;
--  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_dst && a_dst->data.ptr) {
--    io0_a_dst = a_dst->data.ptr;
--    io1_a_dst = io0_a_dst + a_dst->meta.wi;
--    iop_a_dst = io1_a_dst;
--    io2_a_dst = io0_a_dst + a_dst->data.len;
--    if (a_dst->meta.closed) {
--      io2_a_dst = iop_a_dst;
--    }
--  }
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -35657,205 +35461,92 @@ wuffs_deflate__decoder__decode_huffman_fast32(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
--    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
--    goto exit;
--  }
-   v_bits = self->private_impl.f_bits;
-   v_n_bits = self->private_impl.f_n_bits;
--  v_lmask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u);
--  v_dmask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[1u]) - 1u);
--  if (self->private_impl.f_transformed_history_count < (a_dst ? a_dst->meta.pos : 0u)) {
--    status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position);
--    goto exit;
--  }
--  v_hdist_adjustment = ((uint32_t)((self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0u))));
--  label__loop__continue:;
--  while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 266u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 12u)) {
--    if (v_n_bits < 15u) {
--      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
--      iop_a_src += 1u;
--      v_n_bits += 8u;
--      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
--      iop_a_src += 1u;
--      v_n_bits += 8u;
-+  v_block_size = self->private_impl.f_block_size;
-+  v_which = self->private_impl.f_decode_huffman_which;
-+  v_ticks = self->private_impl.f_decode_huffman_ticks;
-+  v_section = self->private_impl.f_decode_huffman_section;
-+  v_run_shift = self->private_impl.f_decode_huffman_run_shift;
-+  while (((uint64_t)(io2_a_src - iop_a_src)) >= 4u) {
-+    if (v_ticks > 0u) {
-+      v_ticks -= 1u;
-     } else {
--    }
--    v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_lmask)];
--    v_table_entry_n_bits = (v_table_entry & 15u);
--    v_bits >>= v_table_entry_n_bits;
--    v_n_bits -= v_table_entry_n_bits;
--    if ((v_table_entry >> 31u) != 0u) {
--      (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
--      continue;
--    } else if ((v_table_entry >> 30u) != 0u) {
--    } else if ((v_table_entry >> 29u) != 0u) {
--      self->private_impl.f_end_of_block = true;
--      break;
--    } else if ((v_table_entry >> 28u) != 0u) {
--      if (v_n_bits < 15u) {
--        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
--        iop_a_src += 1u;
--        v_n_bits += 8u;
--        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
--        iop_a_src += 1u;
--        v_n_bits += 8u;
--      } else {
--      }
--      v_redir_top = ((v_table_entry >> 8u) & 65535u);
--      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
--      v_table_entry = self->private_data.f_huffs[0u][((v_redir_top + (v_bits & v_redir_mask)) & 1023u)];
--      v_table_entry_n_bits = (v_table_entry & 15u);
--      v_bits >>= v_table_entry_n_bits;
--      v_n_bits -= v_table_entry_n_bits;
--      if ((v_table_entry >> 31u) != 0u) {
--        (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
--        continue;
--      } else if ((v_table_entry >> 30u) != 0u) {
--      } else if ((v_table_entry >> 29u) != 0u) {
--        self->private_impl.f_end_of_block = true;
--        break;
--      } else if ((v_table_entry >> 28u) != 0u) {
--        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--        goto exit;
--      } else if ((v_table_entry >> 27u) != 0u) {
--        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
--        goto exit;
--      } else {
--        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+      v_ticks = 49u;
-+      v_section += 1u;
-+      if (v_section >= self->private_impl.f_num_sections) {
-+        status = wuffs_base__make_status(wuffs_bzip2__error__bad_number_of_sections);
-         goto exit;
-       }
--    } else if ((v_table_entry >> 27u) != 0u) {
--      status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
--      goto exit;
--    } else {
--      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--      goto exit;
--    }
--    v_length = (((v_table_entry >> 8u) & 255u) + 3u);
--    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
--    if (v_table_entry_n_bits > 0u) {
--      if (v_n_bits < 15u) {
--        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
--        iop_a_src += 1u;
--        v_n_bits += 8u;
--        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
--        iop_a_src += 1u;
--        v_n_bits += 8u;
--      } else {
--      }
--      v_length = (((v_length + 253u + ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 255u) + 3u);
--      v_bits >>= v_table_entry_n_bits;
--      v_n_bits -= v_table_entry_n_bits;
--    } else {
--    }
--    if (v_n_bits < 15u) {
--      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
--      iop_a_src += 1u;
--      v_n_bits += 8u;
--      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
--      iop_a_src += 1u;
--      v_n_bits += 8u;
--    } else {
-+      v_which = WUFFS_BZIP2__CLAMP_TO_5[((uint8_t)(self->private_data.f_huffman_selectors[(v_section & 32767u)] & 7u))];
-     }
--    v_table_entry = self->private_data.f_huffs[1u][(v_bits & v_dmask)];
--    v_table_entry_n_bits = (v_table_entry & 15u);
--    v_bits >>= v_table_entry_n_bits;
--    v_n_bits -= v_table_entry_n_bits;
--    if ((v_table_entry >> 28u) == 1u) {
--      if (v_n_bits < 15u) {
--        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
--        iop_a_src += 1u;
--        v_n_bits += 8u;
--        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
--        iop_a_src += 1u;
--        v_n_bits += 8u;
--      } else {
-+    v_bits |= (wuffs_base__peek_u32be__no_bounds_check(iop_a_src) >> v_n_bits);
-+    iop_a_src += ((31u - v_n_bits) >> 3u);
-+    v_n_bits |= 24u;
-+    v_table_entry = self->private_data.f_huffman_tables[v_which][(v_bits >> 24u)];
-+    v_bits <<= ((uint16_t)(v_table_entry >> 12u));
-+    v_n_bits -= ((uint32_t)(((uint16_t)(v_table_entry >> 12u))));
-+    v_child = ((uint16_t)(v_table_entry & 1023u));
-+    while (v_child < 257u) {
-+      v_child = self->private_data.f_huffman_trees[v_which][v_child][(v_bits >> 31u)];
-+      v_bits <<= 1u;
-+      if (v_n_bits <= 0u) {
-+        status = wuffs_base__make_status(wuffs_bzip2__error__internal_error_inconsistent_huffman_decoder_state);
-+        goto exit;
-       }
--      v_redir_top = ((v_table_entry >> 8u) & 65535u);
--      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
--      v_table_entry = self->private_data.f_huffs[1u][((v_redir_top + (v_bits & v_redir_mask)) & 1023u)];
--      v_table_entry_n_bits = (v_table_entry & 15u);
--      v_bits >>= v_table_entry_n_bits;
--      v_n_bits -= v_table_entry_n_bits;
--    } else {
-+      v_n_bits -= 1u;
-     }
--    if ((v_table_entry >> 24u) != 64u) {
--      if ((v_table_entry >> 24u) == 8u) {
--        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
-+    if (v_child < 768u) {
-+      v_child_ff = ((uint32_t)(((uint16_t)(v_child & 255u))));
-+      v_output = ((uint32_t)(self->private_data.f_mtft[v_child_ff]));
-+      wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_mtft, 1, (1u + v_child_ff)), wuffs_base__make_slice_u8(self->private_data.f_mtft, v_child_ff));
-+      self->private_data.f_mtft[0u] = ((uint8_t)(v_output));
-+      self->private_data.f_letter_counts[v_output] += 1u;
-+      self->private_data.f_bwt[v_block_size] = v_output;
-+      if (v_block_size >= self->private_impl.f_max_incl_block_size) {
-+        status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
-         goto exit;
-       }
--      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--      goto exit;
-+      v_block_size += 1u;
-+      v_run_shift = 0u;
-+      continue;
-+    } else if (v_child == 768u) {
-+      self->private_impl.f_decode_huffman_finished = true;
-+      break;
-     }
--    v_dist_minus_1 = ((v_table_entry >> 8u) & 32767u);
--    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
--    if (v_n_bits < v_table_entry_n_bits) {
--      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
--      iop_a_src += 1u;
--      v_n_bits += 8u;
--      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
--      iop_a_src += 1u;
--      v_n_bits += 8u;
-+    if (v_run_shift >= 23u) {
-+      status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
-+      goto exit;
-     }
--    v_dist_minus_1 = ((v_dist_minus_1 + ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 32767u);
--    v_bits >>= v_table_entry_n_bits;
--    v_n_bits -= v_table_entry_n_bits;
--    do {
--      if (((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
--        v_hlen = 0u;
--        v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1u))) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
--        if (v_length > v_hdist) {
--          v_length -= v_hdist;
--          v_hlen = v_hdist;
--        } else {
--          v_hlen = v_length;
--          v_length = 0u;
--        }
--        v_hdist += v_hdist_adjustment;
--        if (self->private_impl.f_history_index < v_hdist) {
--          status = wuffs_base__make_status(wuffs_deflate__error__bad_distance);
--          goto exit;
--        }
--        wuffs_base__io_writer__limited_copy_u32_from_slice(
--            &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767u), 33025));
--        if (v_length == 0u) {
--          goto label__loop__continue;
--        }
--        if ((((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) || (((uint64_t)(v_length)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_length + 8u))) > ((uint64_t)(io2_a_dst - iop_a_dst)))) {
--          status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_distance);
--          goto exit;
--        }
--      }
--      if ((v_dist_minus_1 + 1u) >= 8u) {
--        wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast(
--            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
--      } else {
--        wuffs_base__io_writer__limited_copy_u32_from_history_fast(
--            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
--      }
--    } while (0);
--  }
--  while (v_n_bits >= 8u) {
--    v_n_bits -= 8u;
--    if (iop_a_src > io1_a_src) {
--      iop_a_src--;
--    } else {
--      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_i_o);
-+    v_run = ((((uint32_t)(v_child)) & 3u) << v_run_shift);
-+    v_run_shift += 1u;
-+    v_i = v_block_size;
-+    v_j = (v_run + v_block_size);
-+    if (v_j > self->private_impl.f_max_incl_block_size) {
-+      status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
-       goto exit;
-     }
-+    v_block_size = v_j;
-+    v_mtft0 = ((uint32_t)(self->private_data.f_mtft[0u]));
-+    self->private_data.f_letter_counts[v_mtft0] += v_run;
-+    while (v_i < v_j) {
-+      self->private_data.f_bwt[v_i] = v_mtft0;
-+      v_i += 1u;
-+    }
-   }
--  self->private_impl.f_bits = (v_bits & ((((uint32_t)(1u)) << v_n_bits) - 1u));
-+  self->private_impl.f_bits = v_bits;
-   self->private_impl.f_n_bits = v_n_bits;
--  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> self->private_impl.f_n_bits) != 0u)) {
--    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
--    goto exit;
--  }
-+  self->private_impl.f_block_size = v_block_size;
-+  self->private_impl.f_decode_huffman_which = v_which;
-+  self->private_impl.f_decode_huffman_ticks = v_ticks;
-+  self->private_impl.f_decode_huffman_section = v_section;
-+  self->private_impl.f_decode_huffman_run_shift = v_run_shift;
-+  status = wuffs_base__make_status(NULL);
-+  goto ok;
-+
-+  ok:
-   goto exit;
-   exit:
--  if (a_dst && a_dst->data.ptr) {
--    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--  }
-   if (a_src && a_src->data.ptr) {
-     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
-@@ -35863,52 +35554,25 @@ wuffs_deflate__decoder__decode_huffman_fast32(
-   return status;
- }
- 
--// -------- func deflate.decoder.decode_huffman_fast64
-+// -------- func bzip2.decoder.decode_huffman_slow
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_deflate__decoder__decode_huffman_fast64(
--    wuffs_deflate__decoder* self,
--    wuffs_base__io_buffer* a_dst,
-+wuffs_bzip2__decoder__decode_huffman_slow(
-+    wuffs_bzip2__decoder* self,
-     wuffs_base__io_buffer* a_src) {
--  return (*self->private_impl.choosy_decode_huffman_fast64)(self, a_dst, a_src);
--}
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_deflate__decoder__decode_huffman_fast64__choosy_default(
--    wuffs_deflate__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  uint64_t v_bits = 0;
--  uint32_t v_n_bits = 0;
--  uint32_t v_table_entry = 0;
--  uint32_t v_table_entry_n_bits = 0;
--  uint64_t v_lmask = 0;
--  uint64_t v_dmask = 0;
--  uint32_t v_redir_top = 0;
--  uint32_t v_redir_mask = 0;
--  uint32_t v_length = 0;
--  uint32_t v_dist_minus_1 = 0;
--  uint32_t v_hlen = 0;
--  uint32_t v_hdist = 0;
--  uint32_t v_hdist_adjustment = 0;
-+  uint8_t v_c8 = 0;
-+  uint32_t v_node_index = 0;
-+  uint16_t v_child = 0;
-+  uint32_t v_child_ff = 0;
-+  uint32_t v_i = 0;
-+  uint32_t v_j = 0;
-+  uint32_t v_output = 0;
-+  uint32_t v_run = 0;
-+  uint32_t v_mtft0 = 0;
- 
--  uint8_t* iop_a_dst = NULL;
--  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_dst && a_dst->data.ptr) {
--    io0_a_dst = a_dst->data.ptr;
--    io1_a_dst = io0_a_dst + a_dst->meta.wi;
--    iop_a_dst = io1_a_dst;
--    io2_a_dst = io0_a_dst + a_dst->data.len;
--    if (a_dst->meta.closed) {
--      io2_a_dst = iop_a_dst;
--    }
--  }
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -35920,160 +35584,101 @@ wuffs_deflate__decoder__decode_huffman_fast64__choosy_default(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
--    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
--    goto exit;
--  }
--  v_bits = ((uint64_t)(self->private_impl.f_bits));
--  v_n_bits = self->private_impl.f_n_bits;
--  v_lmask = ((((uint64_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u);
--  v_dmask = ((((uint64_t)(1u)) << self->private_impl.f_n_huffs_bits[1u]) - 1u);
--  if (self->private_impl.f_transformed_history_count < (a_dst ? a_dst->meta.pos : 0u)) {
--    status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position);
--    goto exit;
-+  uint32_t coro_susp_point = self->private_impl.p_decode_huffman_slow;
-+  if (coro_susp_point) {
-+    v_node_index = self->private_data.s_decode_huffman_slow.v_node_index;
-   }
--  v_hdist_adjustment = ((uint32_t)((self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0u))));
--  label__loop__continue:;
--  while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 266u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 8u)) {
--    v_bits |= ((uint64_t)(wuffs_base__peek_u64le__no_bounds_check(iop_a_src) << (v_n_bits & 63u)));
--    iop_a_src += ((63u - (v_n_bits & 63u)) >> 3u);
--    v_n_bits |= 56u;
--    v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_lmask)];
--    v_table_entry_n_bits = (v_table_entry & 15u);
--    v_bits >>= v_table_entry_n_bits;
--    v_n_bits -= v_table_entry_n_bits;
--    if ((v_table_entry >> 31u) != 0u) {
--      (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
--      continue;
--    } else if ((v_table_entry >> 30u) != 0u) {
--    } else if ((v_table_entry >> 29u) != 0u) {
--      self->private_impl.f_end_of_block = true;
--      break;
--    } else if ((v_table_entry >> 28u) != 0u) {
--      v_redir_top = ((v_table_entry >> 8u) & 65535u);
--      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
--      v_table_entry = self->private_data.f_huffs[0u][((v_redir_top + (((uint32_t)(v_bits)) & v_redir_mask)) & 1023u)];
--      v_table_entry_n_bits = (v_table_entry & 15u);
--      v_bits >>= v_table_entry_n_bits;
--      v_n_bits -= v_table_entry_n_bits;
--      if ((v_table_entry >> 31u) != 0u) {
--        (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
--        continue;
--      } else if ((v_table_entry >> 30u) != 0u) {
--      } else if ((v_table_entry >> 29u) != 0u) {
--        self->private_impl.f_end_of_block = true;
--        break;
--      } else if ((v_table_entry >> 28u) != 0u) {
--        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--        goto exit;
--      } else if ((v_table_entry >> 27u) != 0u) {
--        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
--        goto exit;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while ( ! (self->private_impl.p_decode_huffman_slow != 0)) {
-+      if (self->private_impl.f_decode_huffman_ticks > 0u) {
-+        self->private_impl.f_decode_huffman_ticks -= 1u;
-       } else {
--        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--        goto exit;
--      }
--    } else if ((v_table_entry >> 27u) != 0u) {
--      status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
--      goto exit;
--    } else {
--      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--      goto exit;
--    }
--    v_length = (((v_table_entry >> 8u) & 255u) + 3u);
--    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
--    if (v_table_entry_n_bits > 0u) {
--      v_length = (((v_length + 253u + ((uint32_t)(((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 255u) + 3u);
--      v_bits >>= v_table_entry_n_bits;
--      v_n_bits -= v_table_entry_n_bits;
--    }
--    v_table_entry = self->private_data.f_huffs[1u][(v_bits & v_dmask)];
--    v_table_entry_n_bits = (v_table_entry & 15u);
--    v_bits >>= v_table_entry_n_bits;
--    v_n_bits -= v_table_entry_n_bits;
--    if ((v_table_entry >> 28u) == 1u) {
--      v_redir_top = ((v_table_entry >> 8u) & 65535u);
--      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
--      v_table_entry = self->private_data.f_huffs[1u][((v_redir_top + (((uint32_t)(v_bits)) & v_redir_mask)) & 1023u)];
--      v_table_entry_n_bits = (v_table_entry & 15u);
--      v_bits >>= v_table_entry_n_bits;
--      v_n_bits -= v_table_entry_n_bits;
--    }
--    if ((v_table_entry >> 24u) != 64u) {
--      if ((v_table_entry >> 24u) == 8u) {
--        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
--        goto exit;
-+        self->private_impl.f_decode_huffman_ticks = 49u;
-+        self->private_impl.f_decode_huffman_section += 1u;
-+        if (self->private_impl.f_decode_huffman_section >= self->private_impl.f_num_sections) {
-+          status = wuffs_base__make_status(wuffs_bzip2__error__bad_number_of_sections);
-+          goto exit;
-+        }
-+        self->private_impl.f_decode_huffman_which = WUFFS_BZIP2__CLAMP_TO_5[((uint8_t)(self->private_data.f_huffman_selectors[(self->private_impl.f_decode_huffman_section & 32767u)] & 7u))];
-       }
--      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--      goto exit;
--    }
--    v_dist_minus_1 = ((v_table_entry >> 8u) & 32767u);
--    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
--    v_dist_minus_1 = ((v_dist_minus_1 + ((uint32_t)(((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 32767u);
--    v_bits >>= v_table_entry_n_bits;
--    v_n_bits -= v_table_entry_n_bits;
--    do {
--      if (((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
--        v_hlen = 0u;
--        v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1u))) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
--        if (v_length > v_hdist) {
--          v_length -= v_hdist;
--          v_hlen = v_hdist;
--        } else {
--          v_hlen = v_length;
--          v_length = 0u;
-+      v_node_index = 0u;
-+      while (true) {
-+        if (self->private_impl.f_n_bits <= 0u) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint8_t t_0 = *iop_a_src++;
-+            v_c8 = t_0;
-+          }
-+          self->private_impl.f_bits = (((uint32_t)(v_c8)) << 24u);
-+          self->private_impl.f_n_bits = 8u;
-         }
--        v_hdist += v_hdist_adjustment;
--        if (self->private_impl.f_history_index < v_hdist) {
--          status = wuffs_base__make_status(wuffs_deflate__error__bad_distance);
--          goto exit;
-+        v_child = self->private_data.f_huffman_trees[self->private_impl.f_decode_huffman_which][v_node_index][(self->private_impl.f_bits >> 31u)];
-+        self->private_impl.f_bits <<= 1u;
-+        self->private_impl.f_n_bits -= 1u;
-+        if (v_child < 257u) {
-+          v_node_index = ((uint32_t)(v_child));
-+          continue;
-+        } else if (v_child < 768u) {
-+          v_child_ff = ((uint32_t)(((uint16_t)(v_child & 255u))));
-+          v_output = ((uint32_t)(self->private_data.f_mtft[v_child_ff]));
-+          wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_mtft, 1, (1u + v_child_ff)), wuffs_base__make_slice_u8(self->private_data.f_mtft, v_child_ff));
-+          self->private_data.f_mtft[0u] = ((uint8_t)(v_output));
-+          self->private_data.f_letter_counts[v_output] += 1u;
-+          self->private_data.f_bwt[self->private_impl.f_block_size] = v_output;
-+          if (self->private_impl.f_block_size >= self->private_impl.f_max_incl_block_size) {
-+            status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
-+            goto exit;
-+          }
-+          self->private_impl.f_block_size += 1u;
-+          self->private_impl.f_decode_huffman_run_shift = 0u;
-+          break;
-+        } else if (v_child == 768u) {
-+          self->private_impl.f_decode_huffman_finished = true;
-+          goto label__outer__break;
-         }
--        wuffs_base__io_writer__limited_copy_u32_from_slice(
--            &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767u), 33025));
--        if (v_length == 0u) {
--          goto label__loop__continue;
-+        if (self->private_impl.f_decode_huffman_run_shift >= 23u) {
-+          status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
-+          goto exit;
-         }
--        if ((((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) || (((uint64_t)(v_length)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_length + 8u))) > ((uint64_t)(io2_a_dst - iop_a_dst)))) {
--          status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_distance);
-+        v_run = ((((uint32_t)(v_child)) & 3u) << self->private_impl.f_decode_huffman_run_shift);
-+        self->private_impl.f_decode_huffman_run_shift += 1u;
-+        v_i = self->private_impl.f_block_size;
-+        v_j = (v_run + self->private_impl.f_block_size);
-+        if (v_j > self->private_impl.f_max_incl_block_size) {
-+          status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
-           goto exit;
-         }
-+        self->private_impl.f_block_size = v_j;
-+        v_mtft0 = ((uint32_t)(self->private_data.f_mtft[0u]));
-+        self->private_data.f_letter_counts[v_mtft0] += v_run;
-+        while (v_i < v_j) {
-+          self->private_data.f_bwt[v_i] = v_mtft0;
-+          v_i += 1u;
-+        }
-+        break;
-       }
--      if ((v_dist_minus_1 + 1u) >= 8u) {
--        wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast(
--            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
--      } else if ((v_dist_minus_1 + 1u) == 1u) {
--        wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast(
--            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
--      } else {
--        wuffs_base__io_writer__limited_copy_u32_from_history_fast(
--            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
--      }
--    } while (0);
--  }
--  if (v_n_bits > 63u) {
--    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
--    goto exit;
--  }
--  while (v_n_bits >= 8u) {
--    v_n_bits -= 8u;
--    if (iop_a_src > io1_a_src) {
--      iop_a_src--;
--    } else {
--      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_i_o);
--      goto exit;
-     }
--  }
--  self->private_impl.f_bits = ((uint32_t)((v_bits & ((((uint64_t)(1u)) << v_n_bits) - 1u))));
--  self->private_impl.f_n_bits = v_n_bits;
--  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> self->private_impl.f_n_bits) != 0u)) {
--    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
-+    label__outer__break:;
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_decode_huffman_slow = 0;
-     goto exit;
-   }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_huffman_slow = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_huffman_slow.v_node_index = v_node_index;
-+
-   goto exit;
-   exit:
--  if (a_dst && a_dst->data.ptr) {
--    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--  }
-   if (a_src && a_src->data.ptr) {
-     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
-@@ -36081,40 +35686,229 @@ wuffs_deflate__decoder__decode_huffman_fast64__choosy_default(
-   return status;
- }
- 
--// -------- func deflate.decoder.decode_huffman_slow
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BZIP2)
-+
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CBOR)
-+
-+// ---------------- Status Codes Implementations
-+
-+const char wuffs_cbor__error__bad_input[] = "#cbor: bad input";
-+const char wuffs_cbor__error__unsupported_recursion_depth[] = "#cbor: unsupported recursion depth";
-+const char wuffs_cbor__error__internal_error_inconsistent_i_o[] = "#cbor: internal error: inconsistent I/O";
-+const char wuffs_cbor__error__internal_error_inconsistent_token_length[] = "#cbor: internal error: inconsistent token length";
-+
-+// ---------------- Private Consts
-+
-+static const uint32_t
-+WUFFS_CBOR__LITERALS[4] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  8388612u, 8388616u, 8388610u, 8388609u,
-+};
-+
-+static const uint8_t
-+WUFFS_CBOR__TOKEN_LENGTHS[32] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  1u, 1u, 1u, 1u, 1u, 1u, 1u, 1u,
-+  1u, 1u, 1u, 1u, 1u, 1u, 1u, 1u,
-+  1u, 1u, 1u, 1u, 1u, 1u, 1u, 1u,
-+  2u, 3u, 5u, 9u, 0u, 0u, 0u, 1u,
-+};
-+
-+// ---------------- Private Initializer Prototypes
-+
-+// ---------------- Private Function Prototypes
-+
-+// ---------------- VTables
-+
-+const wuffs_base__token_decoder__func_ptrs
-+wuffs_cbor__decoder__func_ptrs_for__wuffs_base__token_decoder = {
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__token_buffer*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__slice_u8))(&wuffs_cbor__decoder__decode_tokens),
-+  (uint64_t(*)(const void*,
-+      uint32_t))(&wuffs_cbor__decoder__get_quirk),
-+  (wuffs_base__status(*)(void*,
-+      uint32_t,
-+      uint64_t))(&wuffs_cbor__decoder__set_quirk),
-+  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_cbor__decoder__workbuf_len),
-+};
-+
-+// ---------------- Initializer Implementations
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_cbor__decoder__initialize(
-+    wuffs_cbor__decoder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options){
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (sizeof(*self) != sizeof_star_self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  }
-+  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
-+      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+  }
-+
-+  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
-+    // The whole point of this if-check is to detect an uninitialized *self.
-+    // We disable the warning on GCC. Clang-5.0 does not have this warning.
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+#endif
-+    if (self->private_impl.magic != 0) {
-+      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+    }
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+  } else {
-+    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
-+      memset(self, 0, sizeof(*self));
-+      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-+    } else {
-+      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+    }
-+  }
-+
-+  self->private_impl.magic = WUFFS_BASE__MAGIC;
-+  self->private_impl.vtable_for__wuffs_base__token_decoder.vtable_name =
-+      wuffs_base__token_decoder__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__token_decoder.function_pointers =
-+      (const void*)(&wuffs_cbor__decoder__func_ptrs_for__wuffs_base__token_decoder);
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+wuffs_cbor__decoder*
-+wuffs_cbor__decoder__alloc(void) {
-+  wuffs_cbor__decoder* x =
-+      (wuffs_cbor__decoder*)(calloc(1, sizeof(wuffs_cbor__decoder)));
-+  if (!x) {
-+    return NULL;
-+  }
-+  if (wuffs_cbor__decoder__initialize(
-+      x, sizeof(wuffs_cbor__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+    free(x);
-+    return NULL;
-+  }
-+  return x;
-+}
-+
-+size_t
-+sizeof__wuffs_cbor__decoder(void) {
-+  return sizeof(wuffs_cbor__decoder);
-+}
-+
-+// ---------------- Function Implementations
-+
-+// -------- func cbor.decoder.get_quirk
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_deflate__decoder__decode_huffman_slow(
--    wuffs_deflate__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__io_buffer* a_src) {
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_cbor__decoder__get_quirk(
-+    const wuffs_cbor__decoder* self,
-+    uint32_t a_key) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  return 0u;
-+}
-+
-+// -------- func cbor.decoder.set_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_cbor__decoder__set_quirk(
-+    wuffs_cbor__decoder* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+
-+  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+}
-+
-+// -------- func cbor.decoder.workbuf_len
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_cbor__decoder__workbuf_len(
-+    const wuffs_cbor__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+
-+  return wuffs_base__utility__empty_range_ii_u64();
-+}
-+
-+// -------- func cbor.decoder.decode_tokens
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_cbor__decoder__decode_tokens(
-+    wuffs_cbor__decoder* self,
-+    wuffs_base__token_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_dst || !a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 1)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint32_t v_bits = 0;
--  uint32_t v_n_bits = 0;
--  uint32_t v_table_entry = 0;
--  uint32_t v_table_entry_n_bits = 0;
--  uint32_t v_lmask = 0;
--  uint32_t v_dmask = 0;
--  uint32_t v_b0 = 0;
--  uint32_t v_redir_top = 0;
--  uint32_t v_redir_mask = 0;
--  uint32_t v_b1 = 0;
--  uint32_t v_length = 0;
--  uint32_t v_b2 = 0;
--  uint32_t v_b3 = 0;
--  uint32_t v_b4 = 0;
--  uint32_t v_dist_minus_1 = 0;
--  uint32_t v_b5 = 0;
--  uint32_t v_n_copied = 0;
--  uint32_t v_hlen = 0;
--  uint32_t v_hdist = 0;
-+  uint64_t v_string_length = 0;
-+  uint64_t v_n64 = 0;
-+  uint32_t v_depth = 0;
-+  uint32_t v_stack_byte = 0;
-+  uint32_t v_stack_bit = 0;
-+  uint32_t v_stack_val = 0;
-+  uint32_t v_token_length = 0;
-+  uint32_t v_vminor = 0;
-+  uint32_t v_vminor_alt = 0;
-+  uint32_t v_continued = 0;
-+  uint8_t v_c8 = 0;
-+  uint8_t v_c_major = 0;
-+  uint8_t v_c_minor = 0;
-+  bool v_tagged = false;
-+  uint8_t v_indefinite_string_major_type = 0;
- 
--  uint8_t* iop_a_dst = NULL;
--  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  wuffs_base__token* iop_a_dst = NULL;
-+  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-   if (a_dst && a_dst->data.ptr) {
-     io0_a_dst = a_dst->data.ptr;
-     io1_a_dst = io0_a_dst + a_dst->meta.wi;
-@@ -36135,269 +35929,513 @@ wuffs_deflate__decoder__decode_huffman_slow(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_huffman_slow[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_tokens;
-   if (coro_susp_point) {
--    v_bits = self->private_data.s_decode_huffman_slow[0].v_bits;
--    v_n_bits = self->private_data.s_decode_huffman_slow[0].v_n_bits;
--    v_table_entry_n_bits = self->private_data.s_decode_huffman_slow[0].v_table_entry_n_bits;
--    v_lmask = self->private_data.s_decode_huffman_slow[0].v_lmask;
--    v_dmask = self->private_data.s_decode_huffman_slow[0].v_dmask;
--    v_redir_top = self->private_data.s_decode_huffman_slow[0].v_redir_top;
--    v_redir_mask = self->private_data.s_decode_huffman_slow[0].v_redir_mask;
--    v_length = self->private_data.s_decode_huffman_slow[0].v_length;
--    v_dist_minus_1 = self->private_data.s_decode_huffman_slow[0].v_dist_minus_1;
-+    v_string_length = self->private_data.s_decode_tokens.v_string_length;
-+    v_depth = self->private_data.s_decode_tokens.v_depth;
-+    v_tagged = self->private_data.s_decode_tokens.v_tagged;
-+    v_indefinite_string_major_type = self->private_data.s_decode_tokens.v_indefinite_string_major_type;
-   }
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
--      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
--      goto exit;
-+    if (self->private_impl.f_end_of_data) {
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-     }
--    v_bits = self->private_impl.f_bits;
--    v_n_bits = self->private_impl.f_n_bits;
--    v_lmask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u);
--    v_dmask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[1u]) - 1u);
--    label__loop__continue:;
--    while ( ! (self->private_impl.p_decode_huffman_slow[0] != 0)) {
-+    label__outer__continue:;
-+    while (true) {
-       while (true) {
--        v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_lmask)];
--        v_table_entry_n_bits = (v_table_entry & 15u);
--        if (v_n_bits >= v_table_entry_n_bits) {
--          v_bits >>= v_table_entry_n_bits;
--          v_n_bits -= v_table_entry_n_bits;
--          break;
--        }
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
-+        do {
-+          if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 1u) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+            goto label__outer__continue;
-           }
--          uint32_t t_0 = *iop_a_src++;
--          v_b0 = t_0;
--        }
--        v_bits |= (v_b0 << v_n_bits);
--        v_n_bits += 8u;
--      }
--      if ((v_table_entry >> 31u) != 0u) {
--        self->private_data.s_decode_huffman_slow[0].scratch = ((uint8_t)((v_table_entry >> 8u)));
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--        if (iop_a_dst == io2_a_dst) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--          goto suspend;
--        }
--        *iop_a_dst++ = ((uint8_t)(self->private_data.s_decode_huffman_slow[0].scratch));
--        continue;
--      } else if ((v_table_entry >> 30u) != 0u) {
--      } else if ((v_table_entry >> 29u) != 0u) {
--        self->private_impl.f_end_of_block = true;
--        break;
--      } else if ((v_table_entry >> 28u) != 0u) {
--        v_redir_top = ((v_table_entry >> 8u) & 65535u);
--        v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
--        while (true) {
--          v_table_entry = self->private_data.f_huffs[0u][((v_redir_top + (v_bits & v_redir_mask)) & 1023u)];
--          v_table_entry_n_bits = (v_table_entry & 15u);
--          if (v_n_bits >= v_table_entry_n_bits) {
--            v_bits >>= v_table_entry_n_bits;
--            v_n_bits -= v_table_entry_n_bits;
--            break;
-+          if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+            if (a_src && a_src->meta.closed) {
-+              status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
-+              goto exit;
-+            }
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
-+            goto label__outer__continue;
-           }
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
-+          v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+          if ((v_indefinite_string_major_type != 0u) && (v_indefinite_string_major_type != ((uint8_t)(v_c8 >> 5u)))) {
-+            if (v_c8 != 255u) {
-+              status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
-+              goto exit;
-             }
--            uint32_t t_1 = *iop_a_src++;
--            v_b1 = t_1;
-+            v_vminor = 4194560u;
-+            if (v_indefinite_string_major_type == 3u) {
-+              v_vminor |= 19u;
-+            }
-+            v_indefinite_string_major_type = 0u;
-+            iop_a_src += 1u;
-+            *iop_a_dst++ = wuffs_base__make_token(
-+                (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+            goto label__goto_parsed_a_leaf_value__break;
-           }
--          v_bits |= (v_b1 << v_n_bits);
--          v_n_bits += 8u;
--        }
--        if ((v_table_entry >> 31u) != 0u) {
--          self->private_data.s_decode_huffman_slow[0].scratch = ((uint8_t)((v_table_entry >> 8u)));
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--          if (iop_a_dst == io2_a_dst) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--            goto suspend;
-+          iop_a_src += 1u;
-+          v_c_major = ((uint8_t)(((uint8_t)(v_c8 >> 5u))));
-+          v_c_minor = ((uint8_t)(v_c8 & 31u));
-+          if (v_c_minor < 24u) {
-+            v_string_length = ((uint64_t)(v_c_minor));
-+          } else {
-+            while (true) {
-+              if (v_c_minor == 24u) {
-+                if (((uint64_t)(io2_a_src - iop_a_src)) >= 1u) {
-+                  v_string_length = ((uint64_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src)));
-+                  iop_a_src += 1u;
-+                  break;
-+                }
-+              } else if (v_c_minor == 25u) {
-+                if (((uint64_t)(io2_a_src - iop_a_src)) >= 2u) {
-+                  v_string_length = ((uint64_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
-+                  iop_a_src += 2u;
-+                  break;
-+                }
-+              } else if (v_c_minor == 26u) {
-+                if (((uint64_t)(io2_a_src - iop_a_src)) >= 4u) {
-+                  v_string_length = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
-+                  iop_a_src += 4u;
-+                  break;
-+                }
-+              } else if (v_c_minor == 27u) {
-+                if (((uint64_t)(io2_a_src - iop_a_src)) >= 8u) {
-+                  v_string_length = wuffs_base__peek_u64be__no_bounds_check(iop_a_src);
-+                  iop_a_src += 8u;
-+                  break;
-+                }
-+              } else {
-+                v_string_length = 0u;
-+                break;
-+              }
-+              if (iop_a_src > io1_a_src) {
-+                iop_a_src--;
-+                if (a_src && a_src->meta.closed) {
-+                  status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
-+                  goto exit;
-+                }
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
-+                goto label__outer__continue;
-+              }
-+              status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_i_o);
-+              goto exit;
-+            }
-           }
--          *iop_a_dst++ = ((uint8_t)(self->private_data.s_decode_huffman_slow[0].scratch));
--          continue;
--        } else if ((v_table_entry >> 30u) != 0u) {
--        } else if ((v_table_entry >> 29u) != 0u) {
--          self->private_impl.f_end_of_block = true;
--          break;
--        } else if ((v_table_entry >> 28u) != 0u) {
--          status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--          goto exit;
--        } else if ((v_table_entry >> 27u) != 0u) {
--          status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
--          goto exit;
--        } else {
--          status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+          if (v_c_major == 0u) {
-+            if (v_c_minor < 26u) {
-+              *iop_a_dst++ = wuffs_base__make_token(
-+                  (((uint64_t)((14680064u | ((uint32_t)((v_string_length & 65535u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+              goto label__goto_parsed_a_leaf_value__break;
-+            } else if (v_c_minor < 28u) {
-+              *iop_a_dst++ = wuffs_base__make_token(
-+                  (((uint64_t)((14680064u | ((uint32_t)((v_string_length >> 46u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                  (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+              *iop_a_dst++ = wuffs_base__make_token(
-+                  (~(v_string_length & 70368744177663u) << WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT) |
-+                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+              goto label__goto_parsed_a_leaf_value__break;
-+            }
-+          } else if (v_c_major == 1u) {
-+            if (v_c_minor < 26u) {
-+              *iop_a_dst++ = wuffs_base__make_token(
-+                  (((uint64_t)((12582912u | (2097151u - ((uint32_t)((v_string_length & 65535u))))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+              goto label__goto_parsed_a_leaf_value__break;
-+            } else if (v_c_minor < 28u) {
-+              if (v_string_length < 9223372036854775808u) {
-+                *iop_a_dst++ = wuffs_base__make_token(
-+                    (((uint64_t)((12582912u | (2097151u - ((uint32_t)((v_string_length >> 46u))))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                    (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                    (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                *iop_a_dst++ = wuffs_base__make_token(
-+                    (~((18446744073709551615u - v_string_length) & 70368744177663u) << WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT) |
-+                    (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+              } else {
-+                *iop_a_dst++ = wuffs_base__make_token(
-+                    (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
-+                    (((uint64_t)(16777216u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                    (((uint64_t)(9u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+              }
-+              goto label__goto_parsed_a_leaf_value__break;
-+            }
-+          } else if (v_c_major == 2u) {
-+            if (v_c_minor < 28u) {
-+              if (v_string_length == 0u) {
-+                *iop_a_dst++ = wuffs_base__make_token(
-+                    (((uint64_t)(4194560u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                    (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                goto label__goto_parsed_a_leaf_value__break;
-+              }
-+              *iop_a_dst++ = wuffs_base__make_token(
-+                  (((uint64_t)(4194560u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+            } else if (v_c_minor == 31u) {
-+              if (v_indefinite_string_major_type != 0u) {
-+                break;
-+              }
-+              v_indefinite_string_major_type = 2u;
-+              *iop_a_dst++ = wuffs_base__make_token(
-+                  (((uint64_t)(4194560u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+              goto label__outer__continue;
-+            } else {
-+              break;
-+            }
-+            while (true) {
-+              if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
-+                continue;
-+              }
-+              v_n64 = wuffs_base__u64__min(v_string_length, ((uint64_t)(io2_a_src - iop_a_src)));
-+              v_token_length = ((uint32_t)((v_n64 & 65535u)));
-+              if (v_n64 > 65535u) {
-+                v_token_length = 65535u;
-+              } else if (v_token_length <= 0u) {
-+                if (a_src && a_src->meta.closed) {
-+                  status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
-+                  goto exit;
-+                }
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
-+                continue;
-+              }
-+              if (((uint64_t)(io2_a_src - iop_a_src)) < ((uint64_t)(v_token_length))) {
-+                status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_token_length);
-+                goto exit;
-+              }
-+              v_string_length -= ((uint64_t)(v_token_length));
-+              v_continued = 0u;
-+              if ((v_string_length > 0u) || (v_indefinite_string_major_type > 0u)) {
-+                v_continued = 1u;
-+              }
-+              iop_a_src += v_token_length;
-+              *iop_a_dst++ = wuffs_base__make_token(
-+                  (((uint64_t)(4194816u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                  (((uint64_t)(v_continued)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                  (((uint64_t)(v_token_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+              if (v_string_length > 0u) {
-+                continue;
-+              } else if (v_indefinite_string_major_type > 0u) {
-+                goto label__outer__continue;
-+              }
-+              goto label__goto_parsed_a_leaf_value__break;
-+            }
-+          } else if (v_c_major == 3u) {
-+            if (v_c_minor < 28u) {
-+              if (v_string_length == 0u) {
-+                *iop_a_dst++ = wuffs_base__make_token(
-+                    (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                    (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                goto label__goto_parsed_a_leaf_value__break;
-+              }
-+              *iop_a_dst++ = wuffs_base__make_token(
-+                  (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+            } else if (v_c_minor == 31u) {
-+              if (v_indefinite_string_major_type != 0u) {
-+                break;
-+              }
-+              v_indefinite_string_major_type = 3u;
-+              *iop_a_dst++ = wuffs_base__make_token(
-+                  (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+              goto label__outer__continue;
-+            } else {
-+              break;
-+            }
-+            while (true) {
-+              if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
-+                continue;
-+              }
-+              v_n64 = wuffs_base__u64__min(v_string_length, 65535u);
-+              v_n64 = ((uint64_t)(wuffs_base__utf_8__longest_valid_prefix(iop_a_src,
-+                  ((size_t)(wuffs_base__u64__min(((uint64_t)(io2_a_src - iop_a_src)), v_n64))))));
-+              v_token_length = ((uint32_t)((v_n64 & 65535u)));
-+              if (v_token_length <= 0u) {
-+                if ((a_src && a_src->meta.closed) || (((uint64_t)(io2_a_src - iop_a_src)) >= 4u)) {
-+                  status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
-+                  goto exit;
-+                }
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
-+                continue;
-+              }
-+              if (((uint64_t)(io2_a_src - iop_a_src)) < ((uint64_t)(v_token_length))) {
-+                status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_token_length);
-+                goto exit;
-+              }
-+              v_string_length -= ((uint64_t)(v_token_length));
-+              v_continued = 0u;
-+              if ((v_string_length > 0u) || (v_indefinite_string_major_type > 0u)) {
-+                v_continued = 1u;
-+              }
-+              iop_a_src += v_token_length;
-+              *iop_a_dst++ = wuffs_base__make_token(
-+                  (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                  (((uint64_t)(v_continued)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                  (((uint64_t)(v_token_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+              if (v_string_length > 0u) {
-+                continue;
-+              } else if (v_indefinite_string_major_type > 0u) {
-+                goto label__outer__continue;
-+              }
-+              goto label__goto_parsed_a_leaf_value__break;
-+            }
-+          } else if (v_c_major == 4u) {
-+            if (WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor] == 0u) {
-+              break;
-+            } else if (v_depth >= 1024u) {
-+              v_token_length = ((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor]));
-+              while ((v_token_length > 0u) && (iop_a_src > io1_a_src)) {
-+                iop_a_src--;
-+                v_token_length -= 1u;
-+              }
-+              status = wuffs_base__make_status(wuffs_cbor__error__unsupported_recursion_depth);
-+              goto exit;
-+            }
-+            v_vminor = 2105361u;
-+            v_vminor_alt = 2101282u;
-+            if (v_depth > 0u) {
-+              v_stack_byte = ((v_depth - 1u) / 16u);
-+              v_stack_bit = (((v_depth - 1u) & 15u) * 2u);
-+              if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
-+                v_vminor = 2105377u;
-+                v_vminor_alt = 2105378u;
-+              } else {
-+                v_vminor = 2105409u;
-+                v_vminor_alt = 2113570u;
-+              }
-+            }
-+            *iop_a_dst++ = wuffs_base__make_token(
-+                (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+            if (v_c_minor == 0u) {
-+              *iop_a_dst++ = wuffs_base__make_token(
-+                  (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                  (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+              goto label__goto_parsed_a_leaf_value__break;
-+            }
-+            v_stack_byte = (v_depth / 16u);
-+            v_stack_bit = ((v_depth & 15u) * 2u);
-+            self->private_data.f_stack[v_stack_byte] &= (4294967295u ^ (((uint32_t)(3u)) << v_stack_bit));
-+            self->private_data.f_container_num_remaining[v_depth] = v_string_length;
-+            v_depth += 1u;
-+            v_tagged = false;
-+            goto label__outer__continue;
-+          } else if (v_c_major == 5u) {
-+            if (WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor] == 0u) {
-+              break;
-+            } else if (v_depth >= 1024u) {
-+              v_token_length = ((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor]));
-+              while ((v_token_length > 0u) && (iop_a_src > io1_a_src)) {
-+                iop_a_src--;
-+                v_token_length -= 1u;
-+              }
-+              status = wuffs_base__make_status(wuffs_cbor__error__unsupported_recursion_depth);
-+              goto exit;
-+            }
-+            v_vminor = 2113553u;
-+            v_vminor_alt = 2101314u;
-+            if (v_depth > 0u) {
-+              v_stack_byte = ((v_depth - 1u) / 16u);
-+              v_stack_bit = (((v_depth - 1u) & 15u) * 2u);
-+              if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
-+                v_vminor = 2113569u;
-+                v_vminor_alt = 2105410u;
-+              } else {
-+                v_vminor = 2113601u;
-+                v_vminor_alt = 2113602u;
-+              }
-+            }
-+            *iop_a_dst++ = wuffs_base__make_token(
-+                (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+            if (v_c_minor == 0u) {
-+              *iop_a_dst++ = wuffs_base__make_token(
-+                  (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                  (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+              goto label__goto_parsed_a_leaf_value__break;
-+            }
-+            v_stack_byte = (v_depth / 16u);
-+            v_stack_bit = ((v_depth & 15u) * 2u);
-+            self->private_data.f_stack[v_stack_byte] |= (((uint32_t)(3u)) << v_stack_bit);
-+            self->private_data.f_container_num_remaining[v_depth] = v_string_length;
-+            v_depth += 1u;
-+            v_tagged = false;
-+            goto label__outer__continue;
-+          } else if (v_c_major == 6u) {
-+            if (v_c_minor >= 28u) {
-+              break;
-+            }
-+            if (v_string_length < 262144u) {
-+              *iop_a_dst++ = wuffs_base__make_token(
-+                  (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
-+                  (((uint64_t)((4194304u | ((uint32_t)(v_string_length))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+            } else {
-+              *iop_a_dst++ = wuffs_base__make_token(
-+                  (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
-+                  (((uint64_t)((4194304u | ((uint32_t)((v_string_length >> 46u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                  (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+              *iop_a_dst++ = wuffs_base__make_token(
-+                  (~(v_string_length & 70368744177663u) << WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT) |
-+                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+            }
-+            v_tagged = true;
-+            goto label__outer__continue;
-+          } else if (v_c_major == 7u) {
-+            if (v_c_minor < 20u) {
-+              *iop_a_dst++ = wuffs_base__make_token(
-+                  (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
-+                  (((uint64_t)((8388608u | ((uint32_t)((v_string_length & 255u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+              goto label__goto_parsed_a_leaf_value__break;
-+            } else if (v_c_minor < 24u) {
-+              *iop_a_dst++ = wuffs_base__make_token(
-+                  (((uint64_t)(WUFFS_CBOR__LITERALS[((uint8_t)(v_c_minor & 3u))])) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+              goto label__goto_parsed_a_leaf_value__break;
-+            } else if (v_c_minor == 24u) {
-+              if (v_string_length < 24u) {
-+                if ( ! (iop_a_src > io1_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_i_o);
-+                  goto exit;
-+                }
-+                iop_a_src--;
-+                break;
-+              }
-+              *iop_a_dst++ = wuffs_base__make_token(
-+                  (((uint64_t)(787997u)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
-+                  (((uint64_t)((8388608u | ((uint32_t)((v_string_length & 255u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                  (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+              goto label__goto_parsed_a_leaf_value__break;
-+            } else if (v_c_minor < 28u) {
-+              *iop_a_dst++ = wuffs_base__make_token(
-+                  (((uint64_t)(10490113u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                  (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+              goto label__goto_parsed_a_leaf_value__break;
-+            } else if (v_c_minor == 31u) {
-+              if (v_tagged || (v_depth <= 0u)) {
-+                break;
-+              }
-+              v_depth -= 1u;
-+              if (self->private_data.f_container_num_remaining[v_depth] != 0u) {
-+                break;
-+              }
-+              v_stack_byte = (v_depth / 16u);
-+              v_stack_bit = ((v_depth & 15u) * 2u);
-+              v_stack_val = (3u & (self->private_data.f_stack[v_stack_byte] >> v_stack_bit));
-+              if (v_stack_val == 1u) {
-+                break;
-+              }
-+              if (v_stack_val != 3u) {
-+                v_vminor_alt = 2097186u;
-+              } else {
-+                v_vminor_alt = 2097218u;
-+              }
-+              if (v_depth <= 0u) {
-+                v_vminor_alt |= 4096u;
-+              } else {
-+                v_stack_byte = ((v_depth - 1u) / 16u);
-+                v_stack_bit = (((v_depth - 1u) & 15u) * 2u);
-+                if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
-+                  v_vminor_alt |= 8192u;
-+                } else {
-+                  v_vminor_alt |= 16384u;
-+                }
-+              }
-+              *iop_a_dst++ = wuffs_base__make_token(
-+                  (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                  (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+              goto label__goto_parsed_a_leaf_value__break;
-+            }
-+          }
-+        } while (0);
-+        if (iop_a_src > io1_a_src) {
-+          iop_a_src--;
-+          status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
-           goto exit;
-         }
--      } else if ((v_table_entry >> 27u) != 0u) {
--        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
--        goto exit;
--      } else {
--        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+        status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_i_o);
-         goto exit;
-       }
--      v_length = (((v_table_entry >> 8u) & 255u) + 3u);
--      v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
--      if (v_table_entry_n_bits > 0u) {
--        while (v_n_bits < v_table_entry_n_bits) {
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint32_t t_2 = *iop_a_src++;
--            v_b2 = t_2;
--          }
--          v_bits |= (v_b2 << v_n_bits);
--          v_n_bits += 8u;
-+      label__goto_parsed_a_leaf_value__break:;
-+      v_tagged = false;
-+      while (v_depth > 0u) {
-+        v_stack_byte = ((v_depth - 1u) / 16u);
-+        v_stack_bit = (((v_depth - 1u) & 15u) * 2u);
-+        self->private_data.f_stack[v_stack_byte] ^= (((uint32_t)(1u)) << (v_stack_bit + 1u));
-+        if (1u == (3u & (self->private_data.f_stack[v_stack_byte] >> v_stack_bit))) {
-+          goto label__outer__continue;
-         }
--        v_length = (((v_length + 253u + ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 255u) + 3u);
--        v_bits >>= v_table_entry_n_bits;
--        v_n_bits -= v_table_entry_n_bits;
--      }
--      while (true) {
--        v_table_entry = self->private_data.f_huffs[1u][(v_bits & v_dmask)];
--        v_table_entry_n_bits = (v_table_entry & 15u);
--        if (v_n_bits >= v_table_entry_n_bits) {
--          v_bits >>= v_table_entry_n_bits;
--          v_n_bits -= v_table_entry_n_bits;
--          break;
-+        if (self->private_data.f_container_num_remaining[(v_depth - 1u)] <= 0u) {
-+          goto label__outer__continue;
-         }
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint32_t t_3 = *iop_a_src++;
--          v_b3 = t_3;
--        }
--        v_bits |= (v_b3 << v_n_bits);
--        v_n_bits += 8u;
--      }
--      if ((v_table_entry >> 28u) == 1u) {
--        v_redir_top = ((v_table_entry >> 8u) & 65535u);
--        v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
--        while (true) {
--          v_table_entry = self->private_data.f_huffs[1u][((v_redir_top + (v_bits & v_redir_mask)) & 1023u)];
--          v_table_entry_n_bits = (v_table_entry & 15u);
--          if (v_n_bits >= v_table_entry_n_bits) {
--            v_bits >>= v_table_entry_n_bits;
--            v_n_bits -= v_table_entry_n_bits;
--            break;
--          }
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint32_t t_4 = *iop_a_src++;
--            v_b4 = t_4;
--          }
--          v_bits |= (v_b4 << v_n_bits);
--          v_n_bits += 8u;
-+        self->private_data.f_container_num_remaining[(v_depth - 1u)] -= 1u;
-+        if (self->private_data.f_container_num_remaining[(v_depth - 1u)] > 0u) {
-+          goto label__outer__continue;
-         }
--      }
--      if ((v_table_entry >> 24u) != 64u) {
--        if ((v_table_entry >> 24u) == 8u) {
--          status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
--          goto exit;
-+        while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
-+          continue;
-         }
--        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
--        goto exit;
--      }
--      v_dist_minus_1 = ((v_table_entry >> 8u) & 32767u);
--      v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
--      if (v_table_entry_n_bits > 0u) {
--        while (v_n_bits < v_table_entry_n_bits) {
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint32_t t_5 = *iop_a_src++;
--            v_b5 = t_5;
--          }
--          v_bits |= (v_b5 << v_n_bits);
--          v_n_bits += 8u;
-+        v_depth -= 1u;
-+        v_stack_byte = (v_depth / 16u);
-+        v_stack_bit = ((v_depth & 15u) * 2u);
-+        if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
-+          v_vminor_alt = 2097186u;
-+        } else {
-+          v_vminor_alt = 2097218u;
-         }
--        v_dist_minus_1 = ((v_dist_minus_1 + ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 32767u);
--        v_bits >>= v_table_entry_n_bits;
--        v_n_bits -= v_table_entry_n_bits;
--      }
--      while (true) {
--        if (((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
--          v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1u))) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
--          if (v_hdist < v_length) {
--            v_hlen = v_hdist;
-+        if (v_depth <= 0u) {
-+          v_vminor_alt |= 4096u;
-+        } else {
-+          v_stack_byte = ((v_depth - 1u) / 16u);
-+          v_stack_bit = (((v_depth - 1u) & 15u) * 2u);
-+          if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
-+            v_vminor_alt |= 8192u;
-           } else {
--            v_hlen = v_length;
--          }
--          v_hdist += ((uint32_t)(((uint64_t)(self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0u)))));
--          if (self->private_impl.f_history_index < v_hdist) {
--            status = wuffs_base__make_status(wuffs_deflate__error__bad_distance);
--            goto exit;
--          }
--          v_n_copied = wuffs_base__io_writer__limited_copy_u32_from_slice(
--              &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767u), 33025));
--          if (v_n_copied < v_hlen) {
--            v_length -= v_n_copied;
--            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
--            continue;
--          }
--          v_length -= v_hlen;
--          if (v_length == 0u) {
--            goto label__loop__continue;
-+            v_vminor_alt |= 16384u;
-           }
-         }
--        v_n_copied = wuffs_base__io_writer__limited_copy_u32_from_history(
--            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
--        if (v_length <= v_n_copied) {
--          goto label__loop__continue;
--        }
--        v_length -= v_n_copied;
--        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
-+        *iop_a_dst++ = wuffs_base__make_token(
-+            (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+            (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-       }
-+      break;
-     }
--    self->private_impl.f_bits = v_bits;
--    self->private_impl.f_n_bits = v_n_bits;
--    if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
--      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
--      goto exit;
--    }
-+    self->private_impl.f_end_of_data = true;
- 
-     ok:
--    self->private_impl.p_decode_huffman_slow[0] = 0;
-+    self->private_impl.p_decode_tokens = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_huffman_slow[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_decode_huffman_slow[0].v_bits = v_bits;
--  self->private_data.s_decode_huffman_slow[0].v_n_bits = v_n_bits;
--  self->private_data.s_decode_huffman_slow[0].v_table_entry_n_bits = v_table_entry_n_bits;
--  self->private_data.s_decode_huffman_slow[0].v_lmask = v_lmask;
--  self->private_data.s_decode_huffman_slow[0].v_dmask = v_dmask;
--  self->private_data.s_decode_huffman_slow[0].v_redir_top = v_redir_top;
--  self->private_data.s_decode_huffman_slow[0].v_redir_mask = v_redir_mask;
--  self->private_data.s_decode_huffman_slow[0].v_length = v_length;
--  self->private_data.s_decode_huffman_slow[0].v_dist_minus_1 = v_dist_minus_1;
-+  self->private_impl.p_decode_tokens = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
-+  self->private_data.s_decode_tokens.v_string_length = v_string_length;
-+  self->private_data.s_decode_tokens.v_depth = v_depth;
-+  self->private_data.s_decode_tokens.v_tagged = v_tagged;
-+  self->private_data.s_decode_tokens.v_indefinite_string_major_type = v_indefinite_string_major_type;
- 
-   goto exit;
-   exit:
-@@ -36408,243 +36446,607 @@ wuffs_deflate__decoder__decode_huffman_slow(
-     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
- 
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-   return status;
- }
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__DEFLATE)
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CBOR)
- 
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GIF)
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC32)
- 
- // ---------------- Status Codes Implementations
- 
--const char wuffs_gif__error__bad_lzw_code[] = "#gif: bad LZW code";
--const char wuffs_gif__error__bad_extension_label[] = "#gif: bad extension label";
--const char wuffs_gif__error__bad_frame_size[] = "#gif: bad frame size";
--const char wuffs_gif__error__bad_graphic_control[] = "#gif: bad graphic control";
--const char wuffs_gif__error__bad_header[] = "#gif: bad header";
--const char wuffs_gif__error__bad_literal_width[] = "#gif: bad literal width";
--const char wuffs_gif__error__bad_palette[] = "#gif: bad palette";
--const char wuffs_gif__error__truncated_input[] = "#gif: truncated input";
--const char wuffs_gif__error__internal_error_inconsistent_i_o[] = "#gif: internal error: inconsistent I/O";
--
- // ---------------- Private Consts
- 
- static const uint32_t
--WUFFS_GIF__INTERLACE_START[5] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  4294967295, 1, 2, 4, 0,
--};
--
--static const uint8_t
--WUFFS_GIF__INTERLACE_DELTA[5] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  1, 2, 4, 8, 8,
--};
--
--static const uint8_t
--WUFFS_GIF__INTERLACE_COUNT[5] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  0, 1, 2, 4, 8,
--};
--
--static const uint8_t
--WUFFS_GIF__ANIMEXTS1DOT0[11] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  65, 78, 73, 77, 69, 88, 84, 83,
--  49, 46, 48,
--};
--
--static const uint8_t
--WUFFS_GIF__NETSCAPE2DOT0[11] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  78, 69, 84, 83, 67, 65, 80, 69,
--  50, 46, 48,
--};
--
--static const uint8_t
--WUFFS_GIF__ICCRGBG1012[11] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  73, 67, 67, 82, 71, 66, 71, 49,
--  48, 49, 50,
--};
--
--static const uint8_t
--WUFFS_GIF__XMPDATAXMP[11] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  88, 77, 80, 32, 68, 97, 116, 97,
--  88, 77, 80,
-+WUFFS_CRC32__IEEE_TABLE[16][256] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  {
-+    0u, 1996959894u, 3993919788u, 2567524794u, 124634137u, 1886057615u, 3915621685u, 2657392035u,
-+    249268274u, 2044508324u, 3772115230u, 2547177864u, 162941995u, 2125561021u, 3887607047u, 2428444049u,
-+    498536548u, 1789927666u, 4089016648u, 2227061214u, 450548861u, 1843258603u, 4107580753u, 2211677639u,
-+    325883990u, 1684777152u, 4251122042u, 2321926636u, 335633487u, 1661365465u, 4195302755u, 2366115317u,
-+    997073096u, 1281953886u, 3579855332u, 2724688242u, 1006888145u, 1258607687u, 3524101629u, 2768942443u,
-+    901097722u, 1119000684u, 3686517206u, 2898065728u, 853044451u, 1172266101u, 3705015759u, 2882616665u,
-+    651767980u, 1373503546u, 3369554304u, 3218104598u, 565507253u, 1454621731u, 3485111705u, 3099436303u,
-+    671266974u, 1594198024u, 3322730930u, 2970347812u, 795835527u, 1483230225u, 3244367275u, 3060149565u,
-+    1994146192u, 31158534u, 2563907772u, 4023717930u, 1907459465u, 112637215u, 2680153253u, 3904427059u,
-+    2013776290u, 251722036u, 2517215374u, 3775830040u, 2137656763u, 141376813u, 2439277719u, 3865271297u,
-+    1802195444u, 476864866u, 2238001368u, 4066508878u, 1812370925u, 453092731u, 2181625025u, 4111451223u,
-+    1706088902u, 314042704u, 2344532202u, 4240017532u, 1658658271u, 366619977u, 2362670323u, 4224994405u,
-+    1303535960u, 984961486u, 2747007092u, 3569037538u, 1256170817u, 1037604311u, 2765210733u, 3554079995u,
-+    1131014506u, 879679996u, 2909243462u, 3663771856u, 1141124467u, 855842277u, 2852801631u, 3708648649u,
-+    1342533948u, 654459306u, 3188396048u, 3373015174u, 1466479909u, 544179635u, 3110523913u, 3462522015u,
-+    1591671054u, 702138776u, 2966460450u, 3352799412u, 1504918807u, 783551873u, 3082640443u, 3233442989u,
-+    3988292384u, 2596254646u, 62317068u, 1957810842u, 3939845945u, 2647816111u, 81470997u, 1943803523u,
-+    3814918930u, 2489596804u, 225274430u, 2053790376u, 3826175755u, 2466906013u, 167816743u, 2097651377u,
-+    4027552580u, 2265490386u, 503444072u, 1762050814u, 4150417245u, 2154129355u, 426522225u, 1852507879u,
-+    4275313526u, 2312317920u, 282753626u, 1742555852u, 4189708143u, 2394877945u, 397917763u, 1622183637u,
-+    3604390888u, 2714866558u, 953729732u, 1340076626u, 3518719985u, 2797360999u, 1068828381u, 1219638859u,
-+    3624741850u, 2936675148u, 906185462u, 1090812512u, 3747672003u, 2825379669u, 829329135u, 1181335161u,
-+    3412177804u, 3160834842u, 628085408u, 1382605366u, 3423369109u, 3138078467u, 570562233u, 1426400815u,
-+    3317316542u, 2998733608u, 733239954u, 1555261956u, 3268935591u, 3050360625u, 752459403u, 1541320221u,
-+    2607071920u, 3965973030u, 1969922972u, 40735498u, 2617837225u, 3943577151u, 1913087877u, 83908371u,
-+    2512341634u, 3803740692u, 2075208622u, 213261112u, 2463272603u, 3855990285u, 2094854071u, 198958881u,
-+    2262029012u, 4057260610u, 1759359992u, 534414190u, 2176718541u, 4139329115u, 1873836001u, 414664567u,
-+    2282248934u, 4279200368u, 1711684554u, 285281116u, 2405801727u, 4167216745u, 1634467795u, 376229701u,
-+    2685067896u, 3608007406u, 1308918612u, 956543938u, 2808555105u, 3495958263u, 1231636301u, 1047427035u,
-+    2932959818u, 3654703836u, 1088359270u, 936918000u, 2847714899u, 3736837829u, 1202900863u, 817233897u,
-+    3183342108u, 3401237130u, 1404277552u, 615818150u, 3134207493u, 3453421203u, 1423857449u, 601450431u,
-+    3009837614u, 3294710456u, 1567103746u, 711928724u, 3020668471u, 3272380065u, 1510334235u, 755167117u,
-+  }, {
-+    0u, 421212481u, 842424962u, 724390851u, 1684849924u, 2105013317u, 1448781702u, 1329698503u,
-+    3369699848u, 3519200073u, 4210026634u, 3824474571u, 2897563404u, 3048111693u, 2659397006u, 2274893007u,
-+    1254232657u, 1406739216u, 2029285587u, 1643069842u, 783210325u, 934667796u, 479770071u, 92505238u,
-+    2182846553u, 2600511768u, 2955803355u, 2838940570u, 3866582365u, 4285295644u, 3561045983u, 3445231262u,
-+    2508465314u, 2359236067u, 2813478432u, 3198777185u, 4058571174u, 3908292839u, 3286139684u, 3670389349u,
-+    1566420650u, 1145479147u, 1869335592u, 1987116393u, 959540142u, 539646703u, 185010476u, 303839341u,
-+    3745920755u, 3327985586u, 3983561841u, 4100678960u, 3140154359u, 2721170102u, 2300350837u, 2416418868u,
-+    396344571u, 243568058u, 631889529u, 1018359608u, 1945336319u, 1793607870u, 1103436669u, 1490954812u,
-+    4034481925u, 3915546180u, 3259968903u, 3679722694u, 2484439553u, 2366552896u, 2787371139u, 3208174018u,
-+    950060301u, 565965900u, 177645455u, 328046286u, 1556873225u, 1171730760u, 1861902987u, 2011255754u,
-+    3132841300u, 2745199637u, 2290958294u, 2442530455u, 3738671184u, 3352078609u, 3974232786u, 4126854035u,
-+    1919080284u, 1803150877u, 1079293406u, 1498383519u, 370020952u, 253043481u, 607678682u, 1025720731u,
-+    1711106983u, 2095471334u, 1472923941u, 1322268772u, 26324643u, 411738082u, 866634785u, 717028704u,
-+    2904875439u, 3024081134u, 2668790573u, 2248782444u, 3376948395u, 3495106026u, 4219356713u, 3798300520u,
-+    792689142u, 908347575u, 487136116u, 68299317u, 1263779058u, 1380486579u, 2036719216u, 1618931505u,
-+    3890672638u, 4278043327u, 3587215740u, 3435896893u, 2206873338u, 2593195963u, 2981909624u, 2829542713u,
-+    998479947u, 580430090u, 162921161u, 279890824u, 1609522511u, 1190423566u, 1842954189u, 1958874764u,
-+    4082766403u, 3930137346u, 3245109441u, 3631694208u, 2536953671u, 2385372678u, 2768287173u, 3155920004u,
-+    1900120602u, 1750776667u, 1131931800u, 1517083097u, 355290910u, 204897887u, 656092572u, 1040194781u,
-+    3113746450u, 2692952403u, 2343461520u, 2461357009u, 3723805974u, 3304059991u, 4022511508u, 4141455061u,
-+    2919742697u, 3072101800u, 2620513899u, 2234183466u, 3396041197u, 3547351212u, 4166851439u, 3779471918u,
-+    1725839073u, 2143618976u, 1424512099u, 1307796770u, 45282277u, 464110244u, 813994343u, 698327078u,
-+    3838160568u, 4259225593u, 3606301754u, 3488152955u, 2158586812u, 2578602749u, 2996767038u, 2877569151u,
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-+    2917509143u, 59586950u, 709201268u, 2217549029u, 2043995280u, 3619452161u, 4269064691u, 1344032866u,
-+    3740677976u, 1889445577u, 1498812987u, 4148069290u, 180845535u, 2762992206u, 2372361916u, 588238637u,
-+    1921194766u, 3706423967u, 4112727661u, 1531686908u, 2796705673u, 148555288u, 554857194u, 2407195515u,
-+    26248257u, 2952271312u, 2251333922u, 676868275u, 3584149702u, 2076793175u, 1375858085u, 4234771508u,
-+    2493785488u, 986493953u, 319029491u, 3178008930u, 1083533591u, 4009621638u, 3342158964u, 1767759333u,
-+    3887577823u, 1239362382u, 1612160956u, 3464433197u, 864482904u, 2649647049u, 3022443323u, 441336490u,
-+    1706844275u, 3419730402u, 3793503504u, 1282724993u, 2978819316u, 535149925u, 908921239u, 2554697734u,
-+    380632892u, 3100077741u, 2433735263u, 1063734222u, 3265180603u, 1828069930u, 1161729752u, 3948283721u,
-+    2207997677u, 770953084u, 71007118u, 2857626143u, 1470763626u, 4190274555u, 3490330377u, 2120394392u,
-+    4035494306u, 1591758899u, 1999168705u, 3644880208u, 616140069u, 2328960180u, 2736367686u, 225524183u,
-+  },
- };
- 
--#define WUFFS_GIF__QUIRKS_BASE 1041635328
--
--#define WUFFS_GIF__QUIRKS_COUNT 7
--
- // ---------------- Private Initializer Prototypes
- 
- // ---------------- Private Function Prototypes
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_gif__decoder__do_decode_image_config(
--    wuffs_gif__decoder* self,
--    wuffs_base__image_config* a_dst,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_gif__decoder__do_tell_me_more(
--    wuffs_gif__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__more_information* a_minfo,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_gif__decoder__do_decode_frame_config(
--    wuffs_gif__decoder* self,
--    wuffs_base__frame_config* a_dst,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_gif__decoder__skip_frame(
--    wuffs_gif__decoder* self,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_gif__decoder__do_decode_frame(
--    wuffs_gif__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts);
--
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__empty_struct
--wuffs_gif__decoder__reset_gc(
--    wuffs_gif__decoder* self);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_gif__decoder__decode_up_to_id_part1(
--    wuffs_gif__decoder* self,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_gif__decoder__decode_header(
--    wuffs_gif__decoder* self,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_gif__decoder__decode_lsd(
--    wuffs_gif__decoder* self,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_gif__decoder__decode_extension(
--    wuffs_gif__decoder* self,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_gif__decoder__skip_blocks(
--    wuffs_gif__decoder* self,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_gif__decoder__decode_ae(
--    wuffs_gif__decoder* self,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_gif__decoder__decode_gc(
--    wuffs_gif__decoder* self,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_gif__decoder__decode_id_part0(
--    wuffs_gif__decoder* self,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_gif__decoder__decode_id_part1(
--    wuffs_gif__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_gif__decoder__decode_id_part2(
--    wuffs_gif__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__slice_u8 a_workbuf);
-+wuffs_crc32__ieee_hasher__up(
-+    wuffs_crc32__ieee_hasher* self,
-+    wuffs_base__slice_u8 a_x);
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_gif__decoder__copy_to_image_buffer(
--    wuffs_gif__decoder* self,
--    wuffs_base__pixel_buffer* a_pb,
--    wuffs_base__slice_u8 a_src);
-+static wuffs_base__empty_struct
-+wuffs_crc32__ieee_hasher__up__choosy_default(
-+    wuffs_crc32__ieee_hasher* self,
-+    wuffs_base__slice_u8 a_x);
- 
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_CRC32)
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__empty_struct
--wuffs_gif__decoder__lzw_init(
--    wuffs_gif__decoder* self);
-+wuffs_crc32__ieee_hasher__up_arm_crc32(
-+    wuffs_crc32__ieee_hasher* self,
-+    wuffs_base__slice_u8 a_x);
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_CRC32)
- 
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__empty_struct
--wuffs_gif__decoder__lzw_read_from(
--    wuffs_gif__decoder* self,
--    wuffs_base__io_buffer* a_src);
-+wuffs_crc32__ieee_hasher__up_x86_sse42(
-+    wuffs_crc32__ieee_hasher* self,
-+    wuffs_base__slice_u8 a_x);
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
- 
- // ---------------- VTables
- 
--const wuffs_base__image_decoder__func_ptrs
--wuffs_gif__decoder__func_ptrs_for__wuffs_base__image_decoder = {
--  (wuffs_base__status(*)(void*,
--      wuffs_base__pixel_buffer*,
--      wuffs_base__io_buffer*,
--      wuffs_base__pixel_blend,
--      wuffs_base__slice_u8,
--      wuffs_base__decode_frame_options*))(&wuffs_gif__decoder__decode_frame),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__frame_config*,
--      wuffs_base__io_buffer*))(&wuffs_gif__decoder__decode_frame_config),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__image_config*,
--      wuffs_base__io_buffer*))(&wuffs_gif__decoder__decode_image_config),
--  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_gif__decoder__frame_dirty_rect),
-+const wuffs_base__hasher_u32__func_ptrs
-+wuffs_crc32__ieee_hasher__func_ptrs_for__wuffs_base__hasher_u32 = {
-+  (uint32_t(*)(const void*))(&wuffs_crc32__ieee_hasher__checksum_u32),
-   (uint64_t(*)(const void*,
--      uint32_t))(&wuffs_gif__decoder__get_quirk),
--  (uint64_t(*)(const void*))(&wuffs_gif__decoder__history_retain_length),
--  (uint32_t(*)(const void*))(&wuffs_gif__decoder__num_animation_loops),
--  (uint64_t(*)(const void*))(&wuffs_gif__decoder__num_decoded_frame_configs),
--  (uint64_t(*)(const void*))(&wuffs_gif__decoder__num_decoded_frames),
--  (wuffs_base__status(*)(void*,
--      uint64_t,
--      uint64_t))(&wuffs_gif__decoder__restart_frame),
-+      uint32_t))(&wuffs_crc32__ieee_hasher__get_quirk),
-   (wuffs_base__status(*)(void*,
-       uint32_t,
--      uint64_t))(&wuffs_gif__decoder__set_quirk),
-+      uint64_t))(&wuffs_crc32__ieee_hasher__set_quirk),
-   (wuffs_base__empty_struct(*)(void*,
--      uint32_t,
--      bool))(&wuffs_gif__decoder__set_report_metadata),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__io_buffer*,
--      wuffs_base__more_information*,
--      wuffs_base__io_buffer*))(&wuffs_gif__decoder__tell_me_more),
--  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_gif__decoder__workbuf_len),
-+      wuffs_base__slice_u8))(&wuffs_crc32__ieee_hasher__update),
-+  (uint32_t(*)(void*,
-+      wuffs_base__slice_u8))(&wuffs_crc32__ieee_hasher__update_u32),
- };
- 
- // ---------------- Initializer Implementations
- 
- wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_gif__decoder__initialize(
--    wuffs_gif__decoder* self,
-+wuffs_crc32__ieee_hasher__initialize(
-+    wuffs_crc32__ieee_hasher* self,
-     size_t sizeof_star_self,
-     uint64_t wuffs_version,
-     uint32_t options){
-@@ -36681,23 +37083,25 @@ wuffs_gif__decoder__initialize(
-     }
-   }
- 
-+  self->private_impl.choosy_up = &wuffs_crc32__ieee_hasher__up__choosy_default;
-+
-   self->private_impl.magic = WUFFS_BASE__MAGIC;
--  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
--      wuffs_base__image_decoder__vtable_name;
--  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
--      (const void*)(&wuffs_gif__decoder__func_ptrs_for__wuffs_base__image_decoder);
-+  self->private_impl.vtable_for__wuffs_base__hasher_u32.vtable_name =
-+      wuffs_base__hasher_u32__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__hasher_u32.function_pointers =
-+      (const void*)(&wuffs_crc32__ieee_hasher__func_ptrs_for__wuffs_base__hasher_u32);
-   return wuffs_base__make_status(NULL);
- }
- 
--wuffs_gif__decoder*
--wuffs_gif__decoder__alloc(void) {
--  wuffs_gif__decoder* x =
--      (wuffs_gif__decoder*)(calloc(sizeof(wuffs_gif__decoder), 1));
-+wuffs_crc32__ieee_hasher*
-+wuffs_crc32__ieee_hasher__alloc(void) {
-+  wuffs_crc32__ieee_hasher* x =
-+      (wuffs_crc32__ieee_hasher*)(calloc(1, sizeof(wuffs_crc32__ieee_hasher)));
-   if (!x) {
-     return NULL;
-   }
--  if (wuffs_gif__decoder__initialize(
--      x, sizeof(wuffs_gif__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+  if (wuffs_crc32__ieee_hasher__initialize(
-+      x, sizeof(wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-     free(x);
-     return NULL;
-   }
-@@ -36705,18 +37109,18 @@ wuffs_gif__decoder__alloc(void) {
- }
- 
- size_t
--sizeof__wuffs_gif__decoder(void) {
--  return sizeof(wuffs_gif__decoder);
-+sizeof__wuffs_crc32__ieee_hasher(void) {
-+  return sizeof(wuffs_crc32__ieee_hasher);
- }
- 
- // ---------------- Function Implementations
- 
--// -------- func gif.decoder.get_quirk
-+// -------- func crc32.ieee_hasher.get_quirk
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_gif__decoder__get_quirk(
--    const wuffs_gif__decoder* self,
-+wuffs_crc32__ieee_hasher__get_quirk(
-+    const wuffs_crc32__ieee_hasher* self,
-     uint32_t a_key) {
-   if (!self) {
-     return 0;
-@@ -36726,25 +37130,15 @@ wuffs_gif__decoder__get_quirk(
-     return 0;
-   }
- 
--  uint32_t v_key = 0;
--
--  if (a_key >= 1041635328u) {
--    v_key = (a_key - 1041635328u);
--    if (v_key < 7u) {
--      if (self->private_impl.f_quirks[v_key]) {
--        return 1u;
--      }
--    }
--  }
-   return 0u;
- }
- 
--// -------- func gif.decoder.set_quirk
-+// -------- func crc32.ieee_hasher.set_quirk
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_gif__decoder__set_quirk(
--    wuffs_gif__decoder* self,
-+wuffs_crc32__ieee_hasher__set_quirk(
-+    wuffs_crc32__ieee_hasher* self,
-     uint32_t a_key,
-     uint64_t a_value) {
-   if (!self) {
-@@ -36757,377 +37151,812 @@ wuffs_gif__decoder__set_quirk(
-         : wuffs_base__error__initialize_not_called);
-   }
- 
--  if ((self->private_impl.f_call_sequence == 0u) && (a_key >= 1041635328u)) {
--    a_key -= 1041635328u;
--    if (a_key < 7u) {
--      self->private_impl.f_quirks[a_key] = (a_value > 0u);
--      return wuffs_base__make_status(NULL);
--    }
--  }
-   return wuffs_base__make_status(wuffs_base__error__unsupported_option);
- }
- 
--// -------- func gif.decoder.decode_image_config
-+// -------- func crc32.ieee_hasher.update
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_gif__decoder__decode_image_config(
--    wuffs_gif__decoder* self,
--    wuffs_base__image_config* a_dst,
--    wuffs_base__io_buffer* a_src) {
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_crc32__ieee_hasher__update(
-+    wuffs_crc32__ieee_hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-   if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+    return wuffs_base__make_empty_struct();
-   }
-   if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--  if (!a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 1)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+    return wuffs_base__make_empty_struct();
-   }
--  self->private_impl.active_coroutine = 0;
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
--
--  uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    while (true) {
--      {
--        wuffs_base__status t_0 = wuffs_gif__decoder__do_decode_image_config(self, a_dst, a_src);
--        v_status = t_0;
--      }
--      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_gif__error__truncated_input);
--        goto exit;
--      }
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
--    }
- 
--    ok:
--    self->private_impl.p_decode_image_config[0] = 0;
--    goto exit;
-+  if (self->private_impl.f_state == 0u) {
-+    self->private_impl.choosy_up = (
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_CRC32)
-+        wuffs_base__cpu_arch__have_arm_crc32() ? &wuffs_crc32__ieee_hasher__up_arm_crc32 :
-+#endif
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_crc32__ieee_hasher__up_x86_sse42 :
-+#endif
-+        self->private_impl.choosy_up);
-   }
-+  wuffs_crc32__ieee_hasher__up(self, a_x);
-+  return wuffs_base__make_empty_struct();
-+}
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
-+// -------- func crc32.ieee_hasher.update_u32
- 
--  goto exit;
--  exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_crc32__ieee_hasher__update_u32(
-+    wuffs_crc32__ieee_hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-+  if (!self) {
-+    return 0;
-   }
--  return status;
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return 0;
-+  }
-+
-+  wuffs_crc32__ieee_hasher__update(self, a_x);
-+  return self->private_impl.f_state;
- }
- 
--// -------- func gif.decoder.do_decode_image_config
-+// -------- func crc32.ieee_hasher.up
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_gif__decoder__do_decode_image_config(
--    wuffs_gif__decoder* self,
--    wuffs_base__image_config* a_dst,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  bool v_ffio = false;
-+static wuffs_base__empty_struct
-+wuffs_crc32__ieee_hasher__up(
-+    wuffs_crc32__ieee_hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-+  return (*self->private_impl.choosy_up)(self, a_x);
-+}
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_crc32__ieee_hasher__up__choosy_default(
-+    wuffs_crc32__ieee_hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-+  uint32_t v_s = 0;
-+  wuffs_base__slice_u8 v_p = {0};
- 
--    if (self->private_impl.f_call_sequence != 0u) {
--      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
--      goto exit;
--    } else if ( ! self->private_impl.f_seen_header) {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      status = wuffs_gif__decoder__decode_header(self, a_src);
--      if (status.repr) {
--        goto suspend;
--      }
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--      status = wuffs_gif__decoder__decode_lsd(self, a_src);
--      if (status.repr) {
--        goto suspend;
--      }
--      self->private_impl.f_seen_header = true;
--    }
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--    status = wuffs_gif__decoder__decode_up_to_id_part1(self, a_src);
--    if (status.repr) {
--      goto suspend;
--    }
--    v_ffio =  ! self->private_impl.f_gc_has_transparent_index;
--    if ( ! self->private_impl.f_quirks[2u]) {
--      v_ffio = (v_ffio &&
--          (self->private_impl.f_frame_rect_x0 == 0u) &&
--          (self->private_impl.f_frame_rect_y0 == 0u) &&
--          (self->private_impl.f_frame_rect_x1 == self->private_impl.f_width) &&
--          (self->private_impl.f_frame_rect_y1 == self->private_impl.f_height));
--    } else if (v_ffio) {
--      self->private_impl.f_black_color_u32_argb_premul = 4278190080u;
--    }
--    if (self->private_impl.f_background_color_u32_argb_premul == 77u) {
--      self->private_impl.f_background_color_u32_argb_premul = self->private_impl.f_black_color_u32_argb_premul;
-+  v_s = (4294967295u ^ self->private_impl.f_state);
-+  {
-+    wuffs_base__slice_u8 i_slice_p = a_x;
-+    v_p.ptr = i_slice_p.ptr;
-+    v_p.len = 16;
-+    const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32));
-+    while (v_p.ptr < i_end0_p) {
-+      v_s ^= ((((uint32_t)(v_p.ptr[0u])) << 0u) |
-+          (((uint32_t)(v_p.ptr[1u])) << 8u) |
-+          (((uint32_t)(v_p.ptr[2u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[3u])) << 24u));
-+      v_s = (WUFFS_CRC32__IEEE_TABLE[0u][v_p.ptr[15u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[1u][v_p.ptr[14u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[2u][v_p.ptr[13u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[3u][v_p.ptr[12u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[4u][v_p.ptr[11u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[5u][v_p.ptr[10u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[6u][v_p.ptr[9u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[7u][v_p.ptr[8u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[8u][v_p.ptr[7u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[9u][v_p.ptr[6u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[10u][v_p.ptr[5u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[11u][v_p.ptr[4u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[12u][(255u & (v_s >> 24u))] ^
-+          WUFFS_CRC32__IEEE_TABLE[13u][(255u & (v_s >> 16u))] ^
-+          WUFFS_CRC32__IEEE_TABLE[14u][(255u & (v_s >> 8u))] ^
-+          WUFFS_CRC32__IEEE_TABLE[15u][(255u & (v_s >> 0u))]);
-+      v_p.ptr += 16;
-+      v_s ^= ((((uint32_t)(v_p.ptr[0u])) << 0u) |
-+          (((uint32_t)(v_p.ptr[1u])) << 8u) |
-+          (((uint32_t)(v_p.ptr[2u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[3u])) << 24u));
-+      v_s = (WUFFS_CRC32__IEEE_TABLE[0u][v_p.ptr[15u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[1u][v_p.ptr[14u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[2u][v_p.ptr[13u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[3u][v_p.ptr[12u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[4u][v_p.ptr[11u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[5u][v_p.ptr[10u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[6u][v_p.ptr[9u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[7u][v_p.ptr[8u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[8u][v_p.ptr[7u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[9u][v_p.ptr[6u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[10u][v_p.ptr[5u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[11u][v_p.ptr[4u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[12u][(255u & (v_s >> 24u))] ^
-+          WUFFS_CRC32__IEEE_TABLE[13u][(255u & (v_s >> 16u))] ^
-+          WUFFS_CRC32__IEEE_TABLE[14u][(255u & (v_s >> 8u))] ^
-+          WUFFS_CRC32__IEEE_TABLE[15u][(255u & (v_s >> 0u))]);
-+      v_p.ptr += 16;
-     }
--    if (a_dst != NULL) {
--      wuffs_base__image_config__set(
--          a_dst,
--          2198077448u,
--          0u,
--          self->private_impl.f_width,
--          self->private_impl.f_height,
--          self->private_impl.f_frame_config_io_position,
--          v_ffio);
-+    v_p.len = 16;
-+    const uint8_t* i_end1_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 16) * 16));
-+    while (v_p.ptr < i_end1_p) {
-+      v_s ^= ((((uint32_t)(v_p.ptr[0u])) << 0u) |
-+          (((uint32_t)(v_p.ptr[1u])) << 8u) |
-+          (((uint32_t)(v_p.ptr[2u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[3u])) << 24u));
-+      v_s = (WUFFS_CRC32__IEEE_TABLE[0u][v_p.ptr[15u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[1u][v_p.ptr[14u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[2u][v_p.ptr[13u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[3u][v_p.ptr[12u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[4u][v_p.ptr[11u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[5u][v_p.ptr[10u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[6u][v_p.ptr[9u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[7u][v_p.ptr[8u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[8u][v_p.ptr[7u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[9u][v_p.ptr[6u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[10u][v_p.ptr[5u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[11u][v_p.ptr[4u]] ^
-+          WUFFS_CRC32__IEEE_TABLE[12u][(255u & (v_s >> 24u))] ^
-+          WUFFS_CRC32__IEEE_TABLE[13u][(255u & (v_s >> 16u))] ^
-+          WUFFS_CRC32__IEEE_TABLE[14u][(255u & (v_s >> 8u))] ^
-+          WUFFS_CRC32__IEEE_TABLE[15u][(255u & (v_s >> 0u))]);
-+      v_p.ptr += 16;
-     }
--    if (self->private_impl.f_call_sequence == 0u) {
--      self->private_impl.f_call_sequence = 32u;
-+    v_p.len = 1;
-+    const uint8_t* i_end2_p = wuffs_private_impl__ptr_u8_plus_len(i_slice_p.ptr, i_slice_p.len);
-+    while (v_p.ptr < i_end2_p) {
-+      v_s = (WUFFS_CRC32__IEEE_TABLE[0u][((uint8_t)(((uint8_t)(v_s)) ^ v_p.ptr[0u]))] ^ (v_s >> 8u));
-+      v_p.ptr += 1;
-     }
--
--    goto ok;
--    ok:
--    self->private_impl.p_do_decode_image_config[0] = 0;
--    goto exit;
-+    v_p.len = 0;
-   }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--
--  goto exit;
--  exit:
--  return status;
-+  self->private_impl.f_state = (4294967295u ^ v_s);
-+  return wuffs_base__make_empty_struct();
- }
- 
--// -------- func gif.decoder.set_report_metadata
-+// -------- func crc32.ieee_hasher.checksum_u32
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_gif__decoder__set_report_metadata(
--    wuffs_gif__decoder* self,
--    uint32_t a_fourcc,
--    bool a_report) {
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_crc32__ieee_hasher__checksum_u32(
-+    const wuffs_crc32__ieee_hasher* self) {
-   if (!self) {
--    return wuffs_base__make_empty_struct();
-+    return 0;
-   }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_empty_struct();
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-   }
- 
--  if (a_fourcc == 1229144912u) {
--    self->private_impl.f_report_metadata_iccp = a_report;
--  } else if (a_fourcc == 1481461792u) {
--    self->private_impl.f_report_metadata_xmp = a_report;
-+  return self->private_impl.f_state;
-+}
-+
-+// ‼ WUFFS MULTI-FILE SECTION +arm_crc32
-+// -------- func crc32.ieee_hasher.up_arm_crc32
-+
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_CRC32)
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_crc32__ieee_hasher__up_arm_crc32(
-+    wuffs_crc32__ieee_hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-+  wuffs_base__slice_u8 v_p = {0};
-+  uint32_t v_s = 0;
-+
-+  v_s = (4294967295u ^ self->private_impl.f_state);
-+  while ((((uint64_t)(a_x.len)) > 0u) && ((15u & ((uint32_t)(0xFFFu & (uintptr_t)(a_x.ptr)))) != 0u)) {
-+    v_s = __crc32b(v_s, a_x.ptr[0u]);
-+    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
-+  }
-+  {
-+    wuffs_base__slice_u8 i_slice_p = a_x;
-+    v_p.ptr = i_slice_p.ptr;
-+    v_p.len = 8;
-+    const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 128) * 128));
-+    while (v_p.ptr < i_end0_p) {
-+      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
-+      v_p.ptr += 8;
-+      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
-+      v_p.ptr += 8;
-+      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
-+      v_p.ptr += 8;
-+      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
-+      v_p.ptr += 8;
-+      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
-+      v_p.ptr += 8;
-+      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
-+      v_p.ptr += 8;
-+      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
-+      v_p.ptr += 8;
-+      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
-+      v_p.ptr += 8;
-+      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
-+      v_p.ptr += 8;
-+      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
-+      v_p.ptr += 8;
-+      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
-+      v_p.ptr += 8;
-+      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
-+      v_p.ptr += 8;
-+      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
-+      v_p.ptr += 8;
-+      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
-+      v_p.ptr += 8;
-+      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
-+      v_p.ptr += 8;
-+      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
-+      v_p.ptr += 8;
-+    }
-+    v_p.len = 8;
-+    const uint8_t* i_end1_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 8) * 8));
-+    while (v_p.ptr < i_end1_p) {
-+      v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
-+      v_p.ptr += 8;
-+    }
-+    v_p.len = 1;
-+    const uint8_t* i_end2_p = wuffs_private_impl__ptr_u8_plus_len(i_slice_p.ptr, i_slice_p.len);
-+    while (v_p.ptr < i_end2_p) {
-+      v_s = __crc32b(v_s, v_p.ptr[0u]);
-+      v_p.ptr += 1;
-+    }
-+    v_p.len = 0;
-   }
-+  self->private_impl.f_state = (4294967295u ^ v_s);
-   return wuffs_base__make_empty_struct();
- }
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_CRC32)
-+// ‼ WUFFS MULTI-FILE SECTION -arm_crc32
- 
--// -------- func gif.decoder.tell_me_more
-+// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
-+// -------- func crc32.ieee_hasher.up_x86_sse42
- 
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_gif__decoder__tell_me_more(
--    wuffs_gif__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__more_information* a_minfo,
--    wuffs_base__io_buffer* a_src) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
-+static wuffs_base__empty_struct
-+wuffs_crc32__ieee_hasher__up_x86_sse42(
-+    wuffs_crc32__ieee_hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-+  uint32_t v_s = 0;
-+  __m128i v_kk = {0};
-+  __m128i v_x0 = {0};
-+  __m128i v_x1 = {0};
-+  __m128i v_x2 = {0};
-+  __m128i v_x3 = {0};
-+  __m128i v_x4 = {0};
-+  __m128i v_x5 = {0};
-+  __m128i v_x6 = {0};
-+  __m128i v_x7 = {0};
-+  __m128i v_y0 = {0};
-+  __m128i v_y1 = {0};
-+  __m128i v_y2 = {0};
-+  __m128i v_y3 = {0};
-+  __m128i v_y4 = {0};
-+  __m128i v_y5 = {0};
-+  __m128i v_y6 = {0};
-+  __m128i v_y7 = {0};
-+
-+  v_s = (4294967295u ^ self->private_impl.f_state);
-+  while ((((uint64_t)(a_x.len)) > 0u) && ((15u & ((uint32_t)(0xFFFu & (uintptr_t)(a_x.ptr)))) != 0u)) {
-+    v_s = (WUFFS_CRC32__IEEE_TABLE[0u][((uint8_t)(((uint8_t)(v_s)) ^ a_x.ptr[0u]))] ^ (v_s >> 8u));
-+    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
-   }
--  if (!a_dst || !a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  if (((uint64_t)(a_x.len)) >= 128u) {
-+    v_x0 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u));
-+    v_x1 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16u));
-+    v_x2 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 32u));
-+    v_x3 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 48u));
-+    v_x4 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 64u));
-+    v_x5 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 80u));
-+    v_x6 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 96u));
-+    v_x7 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 112u));
-+    v_kk = _mm_set_epi32((int32_t)(0u), (int32_t)(2433674945u), (int32_t)(0u), (int32_t)(872412467u));
-+    v_x0 = _mm_xor_si128(v_x0, _mm_cvtsi32_si128((int32_t)(v_s)));
-+    a_x = wuffs_base__slice_u8__subslice_i(a_x, 128u);
-+    while (((uint64_t)(a_x.len)) >= 128u) {
-+      v_y0 = _mm_clmulepi64_si128(v_x0, v_kk, (int32_t)(0u));
-+      v_x0 = _mm_clmulepi64_si128(v_x0, v_kk, (int32_t)(17u));
-+      v_y1 = _mm_clmulepi64_si128(v_x1, v_kk, (int32_t)(0u));
-+      v_x1 = _mm_clmulepi64_si128(v_x1, v_kk, (int32_t)(17u));
-+      v_y2 = _mm_clmulepi64_si128(v_x2, v_kk, (int32_t)(0u));
-+      v_x2 = _mm_clmulepi64_si128(v_x2, v_kk, (int32_t)(17u));
-+      v_y3 = _mm_clmulepi64_si128(v_x3, v_kk, (int32_t)(0u));
-+      v_x3 = _mm_clmulepi64_si128(v_x3, v_kk, (int32_t)(17u));
-+      v_y4 = _mm_clmulepi64_si128(v_x4, v_kk, (int32_t)(0u));
-+      v_x4 = _mm_clmulepi64_si128(v_x4, v_kk, (int32_t)(17u));
-+      v_y5 = _mm_clmulepi64_si128(v_x5, v_kk, (int32_t)(0u));
-+      v_x5 = _mm_clmulepi64_si128(v_x5, v_kk, (int32_t)(17u));
-+      v_y6 = _mm_clmulepi64_si128(v_x6, v_kk, (int32_t)(0u));
-+      v_x6 = _mm_clmulepi64_si128(v_x6, v_kk, (int32_t)(17u));
-+      v_y7 = _mm_clmulepi64_si128(v_x7, v_kk, (int32_t)(0u));
-+      v_x7 = _mm_clmulepi64_si128(v_x7, v_kk, (int32_t)(17u));
-+      v_y0 = _mm_xor_si128(v_y0, _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u)));
-+      v_x0 = _mm_xor_si128(v_x0, v_y0);
-+      v_y1 = _mm_xor_si128(v_y1, _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16u)));
-+      v_x1 = _mm_xor_si128(v_x1, v_y1);
-+      v_y2 = _mm_xor_si128(v_y2, _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 32u)));
-+      v_x2 = _mm_xor_si128(v_x2, v_y2);
-+      v_y3 = _mm_xor_si128(v_y3, _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 48u)));
-+      v_x3 = _mm_xor_si128(v_x3, v_y3);
-+      v_y4 = _mm_xor_si128(v_y4, _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 64u)));
-+      v_x4 = _mm_xor_si128(v_x4, v_y4);
-+      v_y5 = _mm_xor_si128(v_y5, _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 80u)));
-+      v_x5 = _mm_xor_si128(v_x5, v_y5);
-+      v_y6 = _mm_xor_si128(v_y6, _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 96u)));
-+      v_x6 = _mm_xor_si128(v_x6, v_y6);
-+      v_y7 = _mm_xor_si128(v_y7, _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 112u)));
-+      v_x7 = _mm_xor_si128(v_x7, v_y7);
-+      a_x = wuffs_base__slice_u8__subslice_i(a_x, 128u);
-+    }
-+    v_kk = _mm_set_epi32((int32_t)(0u), (int32_t)(3433693342u), (int32_t)(0u), (int32_t)(2926088593u));
-+    v_y0 = _mm_clmulepi64_si128(v_x0, v_kk, (int32_t)(0u));
-+    v_x0 = _mm_clmulepi64_si128(v_x0, v_kk, (int32_t)(17u));
-+    v_y2 = _mm_clmulepi64_si128(v_x2, v_kk, (int32_t)(0u));
-+    v_x2 = _mm_clmulepi64_si128(v_x2, v_kk, (int32_t)(17u));
-+    v_y4 = _mm_clmulepi64_si128(v_x4, v_kk, (int32_t)(0u));
-+    v_x4 = _mm_clmulepi64_si128(v_x4, v_kk, (int32_t)(17u));
-+    v_y6 = _mm_clmulepi64_si128(v_x6, v_kk, (int32_t)(0u));
-+    v_x6 = _mm_clmulepi64_si128(v_x6, v_kk, (int32_t)(17u));
-+    v_y0 = _mm_xor_si128(v_y0, v_x1);
-+    v_x0 = _mm_xor_si128(v_x0, v_y0);
-+    v_y2 = _mm_xor_si128(v_y2, v_x3);
-+    v_x2 = _mm_xor_si128(v_x2, v_y2);
-+    v_y4 = _mm_xor_si128(v_y4, v_x5);
-+    v_x4 = _mm_xor_si128(v_x4, v_y4);
-+    v_y6 = _mm_xor_si128(v_y6, v_x7);
-+    v_x6 = _mm_xor_si128(v_x6, v_y6);
-+    v_kk = _mm_set_epi32((int32_t)(0u), (int32_t)(2166711591u), (int32_t)(0u), (int32_t)(4057597354u));
-+    v_y0 = _mm_clmulepi64_si128(v_x0, v_kk, (int32_t)(0u));
-+    v_x0 = _mm_clmulepi64_si128(v_x0, v_kk, (int32_t)(17u));
-+    v_y4 = _mm_clmulepi64_si128(v_x4, v_kk, (int32_t)(0u));
-+    v_x4 = _mm_clmulepi64_si128(v_x4, v_kk, (int32_t)(17u));
-+    v_y0 = _mm_xor_si128(v_y0, v_x2);
-+    v_x0 = _mm_xor_si128(v_x0, v_y0);
-+    v_y4 = _mm_xor_si128(v_y4, v_x6);
-+    v_x4 = _mm_xor_si128(v_x4, v_y4);
-+    v_kk = _mm_set_epi32((int32_t)(0u), (int32_t)(496309207u), (int32_t)(0u), (int32_t)(2402626965u));
-+    v_y0 = _mm_clmulepi64_si128(v_x0, v_kk, (int32_t)(0u));
-+    v_x0 = _mm_clmulepi64_si128(v_x0, v_kk, (int32_t)(17u));
-+    v_y0 = _mm_xor_si128(v_y0, v_x4);
-+    v_x0 = _mm_xor_si128(v_x0, v_y0);
-+    v_kk = _mm_set_epi32((int32_t)(1u), (int32_t)(3681617473u), (int32_t)(3034951717u), (int32_t)(4144043585u));
-+    v_s = ((uint32_t)(_mm_extract_epi32(_mm_clmulepi64_si128(_mm_clmulepi64_si128(_mm_cvtsi64_si128((int64_t)(((uint64_t)(_mm_extract_epi64(v_x0, (int32_t)(0u)))))), v_kk, (int32_t)(0u)), v_kk, (int32_t)(16u)), (int32_t)(2u))));
-+    v_kk = _mm_set_epi32((int32_t)(1u), (int32_t)(3681617473u), (int32_t)(3034951717u), (int32_t)(4144043585u));
-+    v_s = ((uint32_t)(_mm_extract_epi32(_mm_clmulepi64_si128(_mm_clmulepi64_si128(_mm_cvtsi64_si128((int64_t)((((uint64_t)(_mm_extract_epi64(v_x0, (int32_t)(1u)))) ^ ((uint64_t)(v_s))))), v_kk, (int32_t)(0u)), v_kk, (int32_t)(16u)), (int32_t)(2u))));
-+  }
-+  while (((uint64_t)(a_x.len)) >= 8u) {
-+    v_kk = _mm_set_epi32((int32_t)(1u), (int32_t)(3681617473u), (int32_t)(3034951717u), (int32_t)(4144043585u));
-+    v_s = ((uint32_t)(_mm_extract_epi32(_mm_clmulepi64_si128(_mm_clmulepi64_si128(_mm_cvtsi64_si128((int64_t)((wuffs_base__peek_u64le__no_bounds_check(a_x.ptr) ^ ((uint64_t)(v_s))))), v_kk, (int32_t)(0u)), v_kk, (int32_t)(16u)), (int32_t)(2u))));
-+    a_x = wuffs_base__slice_u8__subslice_i(a_x, 8u);
-   }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 2)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  while (((uint64_t)(a_x.len)) > 0u) {
-+    v_s = (WUFFS_CRC32__IEEE_TABLE[0u][((uint8_t)(((uint8_t)(v_s)) ^ a_x.ptr[0u]))] ^ (v_s >> 8u));
-+    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
-   }
--  self->private_impl.active_coroutine = 0;
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+  self->private_impl.f_state = (4294967295u ^ v_s);
-+  return wuffs_base__make_empty_struct();
-+}
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
- 
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC32)
- 
--  uint32_t coro_susp_point = self->private_impl.p_tell_me_more[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC64)
- 
--    while (true) {
--      {
--        wuffs_base__status t_0 = wuffs_gif__decoder__do_tell_me_more(self, a_dst, a_minfo, a_src);
--        v_status = t_0;
--      }
--      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_gif__error__truncated_input);
--        goto exit;
--      }
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
--    }
-+// ---------------- Status Codes Implementations
- 
--    ok:
--    self->private_impl.p_tell_me_more[0] = 0;
--    goto exit;
--  }
-+// ---------------- Private Consts
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_tell_me_more[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
-+static const uint64_t
-+WUFFS_CRC64__ECMA_TABLE[8][256] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  {
-+    0u, 12911341560706588527u, 17619267392293085275u, 5164075066763771700u, 8921845837811637811u, 14483170935171449180u, 10328150133527543400u, 4357999468653093127u,
-+    17843691675623275622u, 4940391307328217865u, 226782375002905661u, 12685511915359257426u, 10119945210068853333u, 4566377562367245626u, 8715998937306186254u, 14689403211693301089u,
-+    9051005139383707209u, 14895072503764629798u, 9880782614656435730u, 4193374422961527165u, 453564750005811322u, 13070904082541799189u, 17496296445768931361u, 4747102235666401102u,
-+    9960315520700766767u, 4113029525020509504u, 9132755124734491252u, 14812441257301386523u, 17431997874612372508u, 4811156168024382323u, 391483189436228679u, 13132671735097031464u,
-+    18102010278767414418u, 5195199925788447741u, 1131375642422963401u, 13591081480414639014u, 9288535643022529185u, 3731739485546663374u, 8386748845923054330u, 14361410892855143829u,
-+    907129500011622644u, 13814943346342178715u, 17875617253995106479u, 5421418680781082560u, 8594564625313771207u, 14152643483341451688u, 9494204471332802204u, 3525329033817543155u,
-+    9704381199536204507u, 3855837706121835956u, 8226059050041019008u, 13908973417437222383u, 18265510249468982504u, 5643692520190618503u, 718348998302913715u, 13463047253836762076u,
-+    8146277531524994749u, 13989069943491807698u, 9622312336048764646u, 3938150108875254153u, 782966378872457358u, 13399312233903888353u, 18327840216347633877u, 5582173445676054458u,
-+    7257036000092981153u, 15535280666427316430u, 10390399851576895482u, 2529986302517213333u, 2262751284845926802u, 12414353723947190013u, 16997392145760156105u, 6398650419759490726u,
-+    10599130201908394951u, 2322133910755632296u, 7463478971093326748u, 15329644185724306675u, 16773497691846108660u, 6622864283287239323u, 2036569382881248687u, 12640783567252986560u,
-+    1814259000023245288u, 12250853444207230599u, 17125426475222188467u, 6811676960462675676u, 7132938157145702363u, 15119434731753103540u, 10842837361562165120u, 2690676064372932847u,
-+    17189129250627542414u, 6747026957542163169u, 1875814858707893717u, 12188560364711551674u, 10762704257491731389u, 2770420489343360210u, 7050658067635086310u, 15201536148867841161u,
-+    11493583972846619443u, 3219832958944941148u, 7711675412243671912u, 15576564987190227975u, 16452118100082038016u, 6305011443818121839u, 1213047649942025563u, 11816267669673208372u,
-+    7503259434831574869u, 15784731923736995898u, 11287385040381237006u, 3425713581329221729u, 1436697996605827430u, 11591809733187859977u, 16677985422973077821u, 6078267261889762898u,
-+    16292555063049989498u, 5851447209550246421u, 1630020308903038241u, 11939238787801010766u, 11081681957373440841u, 3090674103720225830u, 7876300217750508306u, 16023932746787097725u,
-+    1565932757744914716u, 12003503911822413427u, 16230825569204842823u, 5913566482019610152u, 7956607163135676207u, 15944361922680361024u, 11164346891352108916u, 3008957496780927003u,
-+    14514072000185962306u, 8809633696146542637u, 4460922918905818905u, 10287960411460399222u, 12879331835779764593u, 113391187501452830u, 5059972605034426666u, 17660565739912801861u,
-+    4525502569691853604u, 10224187249629523019u, 14576435430675780479u, 8748148222884465680u, 4980157760350383383u, 17740628527280140920u, 12797300839518981452u, 195741594718114339u,
-+    13040162471224305931u, 565687821211481700u, 4644267821511264592u, 17536326748496696895u, 14926957942186653496u, 8937808626997553239u, 4297282312656885603u, 9839608450464401420u,
-+    4852190599768102253u, 17327666750234135042u, 13245728566574478646u, 359174499151456857u, 4073138765762497374u, 10063573324157604913u, 14700457781105076997u, 9163920108173816938u,
-+    3628518000046490576u, 9328460452529085631u, 14330211790445699979u, 8498696072880078052u, 5299565100954197475u, 18061012165519327884u, 13623353920925351352u, 1018284691440624343u,
-+    14265876314291404726u, 8562713237611094233u, 3566469078572851181u, 9390260331795218562u, 13702854325316886917u, 937907429353946858u, 5381352128745865694u, 17978417549248290481u,
-+    5746791986423309721u, 18225777846762470134u, 13494053915084326338u, 606523824971012781u, 3751629717415787434u, 9745292510640121029u, 13876787882151992305u, 8338992711486538910u,
-+    13285957365033343487u, 815010154451519120u, 5540840978686720420u, 18431906428167644875u, 14101316135270172620u, 8115412784602421411u, 3978303581567838103u, 9519354766961195256u,
-+    12527462061959317731u, 2230461459452909452u, 6439665917889882296u, 16893009583564617687u, 15423350824487343824u, 7288217715337890239u, 2490078880175191691u, 10493603952060017124u,
-+    6520081235612152965u, 16813546994155744234u, 12610022887636243678u, 2148641156328442801u, 2426095299884051126u, 10557972909709735385u, 15361512820870335213u, 7350228890552538498u,
-+    15006518869663149738u, 7165105895222849989u, 2649782550477098737u, 10947027550912647582u, 12362696414880903321u, 1783234539286425590u, 6851427162658443458u, 17022309211647725485u,
-+    2873395993211654860u, 10722532847870938531u, 15232418832718623383u, 6938393941075996152u, 6642978682516671743u, 17230443782969840528u, 12156534523779525796u, 1989151790783919051u,
-+    6263731030979658865u, 16556202624882645790u, 11702894419100492842u, 1245039440087595845u, 3260040617806076482u, 11390642587947386157u, 15688795063501830681u, 7680756410435167606u,
-+    11622868312827688983u, 1324891275238549368u, 6181348207440451660u, 16638201170595874595u, 15752600435501016612u, 7616209416359311691u, 3321489341258335871u, 11328242235714328848u,
-+    3131865515489829432u, 10977756817953029463u, 16137146508898304611u, 7844397531750915340u, 5811434156413844491u, 16395372229761246052u, 11827132964039220304u, 1660744670629167935u,
-+    15913214326271352414u, 8068573254449152305u, 2905717078206922245u, 11204220263579804010u, 12035829987123708013u, 1452858539103461122u, 6017914993561854006u, 16189773752444600153u,
-+  }, {
-+    0u, 6118555238288912653u, 12237110476577825306u, 18247330833359770391u, 13942380710360636081u, 10778293617712507836u, 7543452712389327019u, 4343374206906190246u,
-+    1162559746622204903u, 4957131115480832746u, 13398436261328603645u, 17084888254066768112u, 15086905424778654038u, 9634902877839851611u, 8686748413812380492u, 3198961161184305729u,
-+    2325119493244409806u, 8407378615347160771u, 9914262230961665492u, 15960741045388068057u, 16229058527915052415u, 13101053971319389298u, 5254506258681524069u, 2018377927885299304u,
-+    3487552142959377449u, 7246080283574668580u, 11075676491871100467u, 14798208821638459198u, 17373496827624760984u, 11957750539307177877u, 6397922322368611458u, 873845550624159119u,
-+    4650238986488819612u, 1468611264581623441u, 16814757230694321542u, 13669406796222545035u, 9364600845881799981u, 15356367945216001056u, 2893367039927949111u, 8993183146101597754u,
-+    5812680741028562043u, 307286854339917174u, 17976181078471403105u, 12506848973898782572u, 10509012517363048138u, 14213073068277772231u, 4036755855770598608u, 7848658706446142941u,
-+    6975104285918754898u, 3757679901787621727u, 14492160567149337160u, 11382574084698991429u, 11651310343450272483u, 17679087685142107118u, 604386294999662841u, 6668229816820511220u,
-+    8137636784695169973u, 2596263716583940792u, 15653459723670892975u, 10220140060479144098u, 12795844644737222916u, 16535671346696648713u, 1747691101248318238u, 5523790692630174227u,
-+    9300477972977639224u, 15418239225476001333u, 2937222529163246882u, 8947075512310451247u, 4642267913777087881u, 1478833794519692420u, 16842993350473770899u, 13643422681269376670u,
-+    10462937938231096543u, 14256895642581861842u, 4098594218943518405u, 7784568886045304776u, 5786734079855898222u, 335485660068962147u, 17986366292203195508u, 12498915352811683193u,
-+    11625361482057124086u, 17707288688936286715u, 614573708679834348u, 6660293997941431265u, 6929031904881267271u, 3801500275841901386u, 14553996732492558429u, 11318486464284246352u,
-+    12787875770090627857u, 16545891676414235164u, 1775925023235784971u, 5497808777625382918u, 8073511711541197216u, 2658137194938402989u, 15697317412892285882u, 10174030228858301111u,
-+    13950208571837509796u, 10768213751408296361u, 7515359803575243454u, 4369215658492879795u, 64266086328445461u, 6056541296517372696u, 12193111774187735055u, 18293581128395077890u,
-+    15112713823828466499u, 9606842886146402894u, 8676701462472931673u, 3206755967968430164u, 1208772589999325682u, 4913169729330573567u, 13336459633641022440u, 17149116886581154533u,
-+    16275273569390339946u, 13057090384914568807u, 5192527433167881584u, 2082608760381092989u, 2350925692077440475u, 8379320821714095318u, 9904217479574233025u, 15968533654375526092u,
-+    17437760713698643085u, 11895738795633802624u, 6353925819959930519u, 920093647833407386u, 3495382202496636476u, 7235998217053677361u, 11047581385260348454u, 14824052473177163051u,
-+    10447068876609200373u, 14128364157388739064u, 4118967294799201007u, 7908597456515216354u, 5874445058326493764u, 391603411424480073u, 17894151024620902494u, 12447300791057279315u,
-+    9284535827554175762u, 15289779793358354975u, 2957667589039384840u, 9071030930460645381u, 4729911307347480995u, 1535020299074674862u, 16750846767572792249u, 13591740465559749300u,
-+    12735909365018523451u, 16453465302197274166u, 1832394617641637153u, 5585730863000118316u, 8197188437887036810u, 2678299164963691655u, 15569137772090609552u, 10158372272797335197u,
-+    11573468159711796444u, 17614790262716542417u, 670971320137924294u, 6748289234561093579u, 7052776217202099821u, 3821593491595032416u, 14425748405936874615u, 11302896163253294458u,
-+    15020497008676966249u, 9555230900528283236u, 8764415362900159859u, 3262871967819308158u, 1229147417359668696u, 5037195377843840213u, 13320587995882862530u, 17020586948957226703u,
-+    13858063809762534542u, 10716528681989657987u, 7603000551683802772u, 4425403642365261721u, 84709666887204415u, 6180499360129388338u, 12177172482473303077u, 18165119875451415848u,
-+    17309582619392432295u, 11880078264510294442u, 6477599625422879421u, 940257368289594288u, 3551850046471569942u, 7323923223311315739u, 10995617555250765836u, 14731624552464748801u,
-+    16147023423082394432u, 13041502936518885965u, 5316274389876805978u, 2102700497890566231u, 2407324781779167729u, 8467313413945678076u, 9852321304593615851u, 15876037047908055782u,
-+    1291018766690942925u, 4973072573440528064u, 13274480430592564695u, 17064442507263798490u, 15030719607150486908u, 9547259896855319665u, 8738431316985759590u, 3291108156134209131u,
-+    128532172656890922u, 6134424711959717159u, 12113082593034745392u, 18226958170089932605u, 13886262546419256987u, 10690581952315096982u, 7595066862094806145u, 4435588787024731532u,
-+    3580050981226981379u, 7297974293382715662u, 10987681667836234265u, 14741811897106152212u, 17353402924945863346u, 11834005814401532863u, 6413511935936860328u, 1002093465131966885u,
-+    2417545179998651364u, 8459344608371405545u, 9826339458661147134u, 15904271038397419763u, 16208896970474576213u, 12977377931899316312u, 5270164626790366031u, 2146558256149678658u,
-+    5864365122984562769u, 399431204366950748u, 17919992407673188939u, 12419207813205476166u, 10385054866335763168u, 14192630174644861933u, 4165217520762185978u, 7864598685623228919u,
-+    4701851384154880950u, 1560828767195761339u, 16758641643428190636u, 13581693582721149089u, 9240574510442684679u, 15335992705270927370u, 3021896290089222941u, 9009054371811832336u,
-+    8153224920554538911u, 2724514274940876434u, 15633368673088300421u, 10096393516356015240u, 12707851639919861038u, 16479271570068024355u, 1840187295666814772u, 5575686180147088953u,
-+    6990764404993272952u, 3885857308630146421u, 14471996434107354722u, 11258899592309161839u, 11563386024119531209u, 17622620253752952772u, 696814903175779539u, 6720194058879067614u,
-+  }, {
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-+    1858937689852799821u, 14083548048513152013u, 4497338522683984712u, 16489741062169236488u, 6235036951360285511u, 10104345546597921799u, 8152299718492490562u, 12365860697102636034u,
-+    9753200483853429593u, 6765745319621112857u, 11601220269275925340u, 8809399250468705308u, 14416405870873226067u, 1346516287098352659u, 17272668747995384662u, 3821952007586370582u,
-+    13130466198490314208u, 7820039919040899744u, 10492627387899532773u, 5414409408661555877u, 17974923397289260522u, 2579810761044912810u, 16057098401758057967u, 317732763665910447u,
-+    2931518593336833524u, 17442526084696124084u, 1084062204544407025u, 15399436031514938033u, 7486618966321411582u, 13644576356632980158u, 4629793036166665723u, 11168576964637084347u,
-+    15347691128931141778u, 1027777753507534802u, 17534896747071563927u, 3019349226222860247u, 11220431689754577048u, 4686116923914377176u, 13552315720802183325u, 7398828111596124125u,
-+    5362628359632734342u, 10436379358185592774u, 7912374160093407363u, 13218332977821366211u, 369553541361633420u, 16113456511805446092u, 2487515902914439305u, 17887166489985742793u,
-+    8865757316743550527u, 11653040814255671679u, 6677988576850966074u, 9660905738751846778u, 3765703796660934197u, 17220887603689539957u, 1434383093523822128u, 14508740362393577840u,
-+    16546065181022836267u, 4549193289962883435u, 13995757083443852846u, 1766676892172462446u, 12309576339732698657u, 8100554995509053793u, 10192175931700983332u, 6327407589325138276u,
-+  },
-+};
- 
--  goto exit;
--  exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--  }
--  return status;
--}
-+static const uint8_t
-+WUFFS_CRC64__ECMA_X86_SSE42_FOLD1[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  228u, 58u, 57u, 202u, 151u, 212u, 93u, 224u,
-+  64u, 95u, 135u, 199u, 175u, 149u, 190u, 218u,
-+};
- 
--// -------- func gif.decoder.do_tell_me_more
-+static const uint8_t
-+WUFFS_CRC64__ECMA_X86_SSE42_FOLD2[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  68u, 250u, 158u, 138u, 0u, 91u, 9u, 96u,
-+  81u, 175u, 225u, 15u, 163u, 83u, 230u, 59u,
-+};
-+
-+static const uint8_t
-+WUFFS_CRC64__ECMA_X86_SSE42_FOLD4[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  243u, 65u, 212u, 157u, 187u, 239u, 227u, 106u,
-+  244u, 45u, 132u, 167u, 84u, 96u, 31u, 8u,
-+};
-+
-+static const uint8_t
-+WUFFS_CRC64__ECMA_X86_SSE42_FOLD8[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 16u, 204u, 79u, 29u, 215u, 87u, 135u,
-+  64u, 231u, 61u, 247u, 42u, 107u, 216u, 215u,
-+};
-+
-+static const uint8_t
-+WUFFS_CRC64__ECMA_X86_SSE42_MUPX[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  213u, 99u, 41u, 23u, 108u, 70u, 62u, 156u,
-+  133u, 30u, 14u, 175u, 43u, 175u, 216u, 146u,
-+};
-+
-+// ---------------- Private Initializer Prototypes
-+
-+// ---------------- Private Function Prototypes
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_gif__decoder__do_tell_me_more(
--    wuffs_gif__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__more_information* a_minfo,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+static wuffs_base__empty_struct
-+wuffs_crc64__ecma_hasher__up(
-+    wuffs_crc64__ecma_hasher* self,
-+    wuffs_base__slice_u8 a_x);
- 
--  uint64_t v_chunk_length = 0;
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_crc64__ecma_hasher__up__choosy_default(
-+    wuffs_crc64__ecma_hasher* self,
-+    wuffs_base__slice_u8 a_x);
- 
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_crc64__ecma_hasher__up_x86_sse42(
-+    wuffs_crc64__ecma_hasher* self,
-+    wuffs_base__slice_u8 a_x);
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_tell_me_more[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+// ---------------- VTables
- 
--    if ((self->private_impl.f_call_sequence & 16u) == 0u) {
--      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
--      goto exit;
--    }
--    if (self->private_impl.f_metadata_fourcc == 0u) {
--      status = wuffs_base__make_status(wuffs_base__error__no_more_information);
--      goto exit;
--    }
--    while (true) {
--      while (true) {
--        if (wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))) != self->private_impl.f_metadata_io_position) {
--          if (a_minfo != NULL) {
--            wuffs_base__more_information__set(a_minfo,
--                2u,
--                0u,
--                self->private_impl.f_metadata_io_position,
--                0u,
--                0u);
--          }
--          status = wuffs_base__make_status(wuffs_base__suspension__mispositioned_read);
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
--          continue;
--        }
--        if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--          if (a_minfo != NULL) {
--            wuffs_base__more_information__set(a_minfo,
--                0u,
--                0u,
--                0u,
--                0u,
--                0u);
--          }
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
--          continue;
--        }
--        break;
--      }
--      v_chunk_length = ((uint64_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src)));
--      if (v_chunk_length <= 0u) {
--        iop_a_src += 1u;
--        break;
--      }
--      if (self->private_impl.f_metadata_fourcc == 1481461792u) {
--        v_chunk_length += 1u;
--      } else {
--        iop_a_src += 1u;
--      }
--      self->private_impl.f_metadata_io_position = wuffs_base__u64__sat_add(wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))), v_chunk_length);
--      if (a_minfo != NULL) {
--        wuffs_base__more_information__set(a_minfo,
--            3u,
--            self->private_impl.f_metadata_fourcc,
--            0u,
--            wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))),
--            self->private_impl.f_metadata_io_position);
--      }
--      status = wuffs_base__make_status(wuffs_base__suspension__even_more_information);
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
-+const wuffs_base__hasher_u64__func_ptrs
-+wuffs_crc64__ecma_hasher__func_ptrs_for__wuffs_base__hasher_u64 = {
-+  (uint64_t(*)(const void*))(&wuffs_crc64__ecma_hasher__checksum_u64),
-+  (uint64_t(*)(const void*,
-+      uint32_t))(&wuffs_crc64__ecma_hasher__get_quirk),
-+  (wuffs_base__status(*)(void*,
-+      uint32_t,
-+      uint64_t))(&wuffs_crc64__ecma_hasher__set_quirk),
-+  (wuffs_base__empty_struct(*)(void*,
-+      wuffs_base__slice_u8))(&wuffs_crc64__ecma_hasher__update),
-+  (uint64_t(*)(void*,
-+      wuffs_base__slice_u8))(&wuffs_crc64__ecma_hasher__update_u64),
-+};
-+
-+// ---------------- Initializer Implementations
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_crc64__ecma_hasher__initialize(
-+    wuffs_crc64__ecma_hasher* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options){
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (sizeof(*self) != sizeof_star_self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  }
-+  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
-+      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+  }
-+
-+  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
-+    // The whole point of this if-check is to detect an uninitialized *self.
-+    // We disable the warning on GCC. Clang-5.0 does not have this warning.
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+#endif
-+    if (self->private_impl.magic != 0) {
-+      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-     }
--    if (a_minfo != NULL) {
--      wuffs_base__more_information__set(a_minfo,
--          3u,
--          self->private_impl.f_metadata_fourcc,
--          0u,
--          self->private_impl.f_metadata_io_position,
--          self->private_impl.f_metadata_io_position);
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+  } else {
-+    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
-+      memset(self, 0, sizeof(*self));
-+      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-+    } else {
-+      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-     }
--    self->private_impl.f_call_sequence &= 239u;
--    self->private_impl.f_metadata_fourcc = 0u;
--    self->private_impl.f_metadata_io_position = 0u;
--    status = wuffs_base__make_status(NULL);
--    goto ok;
--
--    ok:
--    self->private_impl.p_do_tell_me_more[0] = 0;
--    goto exit;
-   }
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_do_tell_me_more[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.choosy_up = &wuffs_crc64__ecma_hasher__up__choosy_default;
- 
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  self->private_impl.magic = WUFFS_BASE__MAGIC;
-+  self->private_impl.vtable_for__wuffs_base__hasher_u64.vtable_name =
-+      wuffs_base__hasher_u64__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__hasher_u64.function_pointers =
-+      (const void*)(&wuffs_crc64__ecma_hasher__func_ptrs_for__wuffs_base__hasher_u64);
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+wuffs_crc64__ecma_hasher*
-+wuffs_crc64__ecma_hasher__alloc(void) {
-+  wuffs_crc64__ecma_hasher* x =
-+      (wuffs_crc64__ecma_hasher*)(calloc(1, sizeof(wuffs_crc64__ecma_hasher)));
-+  if (!x) {
-+    return NULL;
-   }
-+  if (wuffs_crc64__ecma_hasher__initialize(
-+      x, sizeof(wuffs_crc64__ecma_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+    free(x);
-+    return NULL;
-+  }
-+  return x;
-+}
- 
--  return status;
-+size_t
-+sizeof__wuffs_crc64__ecma_hasher(void) {
-+  return sizeof(wuffs_crc64__ecma_hasher);
- }
- 
--// -------- func gif.decoder.num_animation_loops
-+// ---------------- Function Implementations
-+
-+// -------- func crc64.ecma_hasher.get_quirk
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_gif__decoder__num_animation_loops(
--    const wuffs_gif__decoder* self) {
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_crc64__ecma_hasher__get_quirk(
-+    const wuffs_crc64__ecma_hasher* self,
-+    uint32_t a_key) {
-   if (!self) {
-     return 0;
-   }
-@@ -37136,38 +37965,134 @@ wuffs_gif__decoder__num_animation_loops(
-     return 0;
-   }
- 
--  if (self->private_impl.f_seen_num_animation_loops_value) {
--    return self->private_impl.f_num_animation_loops_value;
--  }
--  if (self->private_impl.f_num_decoded_frame_configs_value > 1u) {
--    return 1u;
--  }
-   return 0u;
- }
- 
--// -------- func gif.decoder.num_decoded_frame_configs
-+// -------- func crc64.ecma_hasher.set_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_crc64__ecma_hasher__set_quirk(
-+    wuffs_crc64__ecma_hasher* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+
-+  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+}
-+
-+// -------- func crc64.ecma_hasher.update
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_crc64__ecma_hasher__update(
-+    wuffs_crc64__ecma_hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-+  if (!self) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+
-+  if (self->private_impl.f_state == 0u) {
-+    self->private_impl.choosy_up = (
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_crc64__ecma_hasher__up_x86_sse42 :
-+#endif
-+        self->private_impl.choosy_up);
-+  }
-+  wuffs_crc64__ecma_hasher__up(self, a_x);
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+// -------- func crc64.ecma_hasher.update_u64
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_gif__decoder__num_decoded_frame_configs(
--    const wuffs_gif__decoder* self) {
-+wuffs_crc64__ecma_hasher__update_u64(
-+    wuffs_crc64__ecma_hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-   if (!self) {
-     return 0;
-   }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-     return 0;
-   }
- 
--  return self->private_impl.f_num_decoded_frame_configs_value;
-+  wuffs_crc64__ecma_hasher__update(self, a_x);
-+  return wuffs_crc64__ecma_hasher__checksum_u64(self);
- }
- 
--// -------- func gif.decoder.num_decoded_frames
-+// -------- func crc64.ecma_hasher.up
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_crc64__ecma_hasher__up(
-+    wuffs_crc64__ecma_hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-+  return (*self->private_impl.choosy_up)(self, a_x);
-+}
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_crc64__ecma_hasher__up__choosy_default(
-+    wuffs_crc64__ecma_hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-+  uint64_t v_s = 0;
-+  wuffs_base__slice_u8 v_p = {0};
-+
-+  v_s = (18446744073709551615u ^ self->private_impl.f_state);
-+  {
-+    wuffs_base__slice_u8 i_slice_p = a_x;
-+    v_p.ptr = i_slice_p.ptr;
-+    v_p.len = 8;
-+    const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 8) * 8));
-+    while (v_p.ptr < i_end0_p) {
-+      v_s ^= ((((uint64_t)(v_p.ptr[0u])) << 0u) |
-+          (((uint64_t)(v_p.ptr[1u])) << 8u) |
-+          (((uint64_t)(v_p.ptr[2u])) << 16u) |
-+          (((uint64_t)(v_p.ptr[3u])) << 24u) |
-+          (((uint64_t)(v_p.ptr[4u])) << 32u) |
-+          (((uint64_t)(v_p.ptr[5u])) << 40u) |
-+          (((uint64_t)(v_p.ptr[6u])) << 48u) |
-+          (((uint64_t)(v_p.ptr[7u])) << 56u));
-+      v_s = (WUFFS_CRC64__ECMA_TABLE[0u][(255u & (v_s >> 56u))] ^
-+          WUFFS_CRC64__ECMA_TABLE[1u][(255u & (v_s >> 48u))] ^
-+          WUFFS_CRC64__ECMA_TABLE[2u][(255u & (v_s >> 40u))] ^
-+          WUFFS_CRC64__ECMA_TABLE[3u][(255u & (v_s >> 32u))] ^
-+          WUFFS_CRC64__ECMA_TABLE[4u][(255u & (v_s >> 24u))] ^
-+          WUFFS_CRC64__ECMA_TABLE[5u][(255u & (v_s >> 16u))] ^
-+          WUFFS_CRC64__ECMA_TABLE[6u][(255u & (v_s >> 8u))] ^
-+          WUFFS_CRC64__ECMA_TABLE[7u][(255u & (v_s >> 0u))]);
-+      v_p.ptr += 8;
-+    }
-+    v_p.len = 1;
-+    const uint8_t* i_end1_p = wuffs_private_impl__ptr_u8_plus_len(i_slice_p.ptr, i_slice_p.len);
-+    while (v_p.ptr < i_end1_p) {
-+      v_s = (WUFFS_CRC64__ECMA_TABLE[0u][((uint8_t)(((uint8_t)(v_s)) ^ v_p.ptr[0u]))] ^ (v_s >> 8u));
-+      v_p.ptr += 1;
-+    }
-+    v_p.len = 0;
-+  }
-+  self->private_impl.f_state = (18446744073709551615u ^ v_s);
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+// -------- func crc64.ecma_hasher.checksum_u64
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_gif__decoder__num_decoded_frames(
--    const wuffs_gif__decoder* self) {
-+wuffs_crc64__ecma_hasher__checksum_u64(
-+    const wuffs_crc64__ecma_hasher* self) {
-   if (!self) {
-     return 0;
-   }
-@@ -37176,72 +38101,473 @@ wuffs_gif__decoder__num_decoded_frames(
-     return 0;
-   }
- 
--  return self->private_impl.f_num_decoded_frames_value;
-+  return self->private_impl.f_state;
- }
- 
--// -------- func gif.decoder.frame_dirty_rect
-+// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
-+// -------- func crc64.ecma_hasher.up_x86_sse42
- 
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
--wuffs_gif__decoder__frame_dirty_rect(
--    const wuffs_gif__decoder* self) {
-+static wuffs_base__empty_struct
-+wuffs_crc64__ecma_hasher__up_x86_sse42(
-+    wuffs_crc64__ecma_hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-+  uint64_t v_s = 0;
-+  wuffs_base__slice_u8 v_p = {0};
-+  uint8_t v_buf[48] = {0};
-+  __m128i v_xa = {0};
-+  __m128i v_xb = {0};
-+  __m128i v_xc = {0};
-+  __m128i v_xd = {0};
-+  __m128i v_xe = {0};
-+  __m128i v_xf = {0};
-+  __m128i v_xg = {0};
-+  __m128i v_xh = {0};
-+  __m128i v_mu1 = {0};
-+  __m128i v_mu2 = {0};
-+  __m128i v_mu4 = {0};
-+  __m128i v_mu8 = {0};
-+  __m128i v_mupx = {0};
-+
-+  v_s = (18446744073709551615u ^ self->private_impl.f_state);
-+  while ((((uint64_t)(a_x.len)) > 0u) && ((15u & ((uint32_t)(0xFFFu & (uintptr_t)(a_x.ptr)))) != 0u)) {
-+    v_s = (WUFFS_CRC64__ECMA_TABLE[0u][((uint8_t)(((uint8_t)(v_s)) ^ a_x.ptr[0u]))] ^ (v_s >> 8u));
-+    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
-+  }
-+  do {
-+    do {
-+      if (((uint64_t)(a_x.len)) >= 128u) {
-+      } else if (((uint64_t)(a_x.len)) >= 64u) {
-+        v_xa = _mm_xor_si128(_mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u)), _mm_cvtsi64_si128((int64_t)(v_s)));
-+        v_xb = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16u));
-+        v_xc = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 32u));
-+        v_xd = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 48u));
-+        a_x = wuffs_base__slice_u8__subslice_i(a_x, 64u);
-+        break;
-+      } else if (((uint64_t)(a_x.len)) >= 32u) {
-+        v_xa = _mm_xor_si128(_mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u)), _mm_cvtsi64_si128((int64_t)(v_s)));
-+        v_xb = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16u));
-+        a_x = wuffs_base__slice_u8__subslice_i(a_x, 32u);
-+        goto label__chain2__break;
-+      } else {
-+        {
-+          wuffs_base__slice_u8 i_slice_p = a_x;
-+          v_p.ptr = i_slice_p.ptr;
-+          v_p.len = 1;
-+          const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(i_slice_p.ptr, i_slice_p.len);
-+          while (v_p.ptr < i_end0_p) {
-+            v_s = (WUFFS_CRC64__ECMA_TABLE[0u][((uint8_t)(((uint8_t)(v_s)) ^ v_p.ptr[0u]))] ^ (v_s >> 8u));
-+            v_p.ptr += 1;
-+          }
-+          v_p.len = 0;
-+        }
-+        self->private_impl.f_state = (18446744073709551615u ^ v_s);
-+        return wuffs_base__make_empty_struct();
-+      }
-+      v_xa = _mm_xor_si128(_mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u)), _mm_cvtsi64_si128((int64_t)(v_s)));
-+      v_xb = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16u));
-+      v_xc = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 32u));
-+      v_xd = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 48u));
-+      v_xe = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 64u));
-+      v_xf = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 80u));
-+      v_xg = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 96u));
-+      v_xh = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 112u));
-+      a_x = wuffs_base__slice_u8__subslice_i(a_x, 128u);
-+      v_mu8 = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC64__ECMA_X86_SSE42_FOLD8));
-+      while (((uint64_t)(a_x.len)) >= 128u) {
-+        v_xa = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xa, v_mu8, (int32_t)(0u)), _mm_clmulepi64_si128(v_xa, v_mu8, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u)));
-+        v_xb = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xb, v_mu8, (int32_t)(0u)), _mm_clmulepi64_si128(v_xb, v_mu8, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16u)));
-+        v_xc = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xc, v_mu8, (int32_t)(0u)), _mm_clmulepi64_si128(v_xc, v_mu8, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 32u)));
-+        v_xd = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xd, v_mu8, (int32_t)(0u)), _mm_clmulepi64_si128(v_xd, v_mu8, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 48u)));
-+        v_xe = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xe, v_mu8, (int32_t)(0u)), _mm_clmulepi64_si128(v_xe, v_mu8, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 64u)));
-+        v_xf = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xf, v_mu8, (int32_t)(0u)), _mm_clmulepi64_si128(v_xf, v_mu8, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 80u)));
-+        v_xg = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xg, v_mu8, (int32_t)(0u)), _mm_clmulepi64_si128(v_xg, v_mu8, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 96u)));
-+        v_xh = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xh, v_mu8, (int32_t)(0u)), _mm_clmulepi64_si128(v_xh, v_mu8, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 112u)));
-+        a_x = wuffs_base__slice_u8__subslice_i(a_x, 128u);
-+      }
-+      v_mu4 = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC64__ECMA_X86_SSE42_FOLD4));
-+      v_xa = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xa, v_mu4, (int32_t)(0u)), _mm_clmulepi64_si128(v_xa, v_mu4, (int32_t)(17u))), v_xe);
-+      v_xb = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xb, v_mu4, (int32_t)(0u)), _mm_clmulepi64_si128(v_xb, v_mu4, (int32_t)(17u))), v_xf);
-+      v_xc = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xc, v_mu4, (int32_t)(0u)), _mm_clmulepi64_si128(v_xc, v_mu4, (int32_t)(17u))), v_xg);
-+      v_xd = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xd, v_mu4, (int32_t)(0u)), _mm_clmulepi64_si128(v_xd, v_mu4, (int32_t)(17u))), v_xh);
-+      if (((uint64_t)(a_x.len)) > 64u) {
-+        v_xa = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xa, v_mu4, (int32_t)(0u)), _mm_clmulepi64_si128(v_xa, v_mu4, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u)));
-+        v_xb = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xb, v_mu4, (int32_t)(0u)), _mm_clmulepi64_si128(v_xb, v_mu4, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16u)));
-+        v_xc = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xc, v_mu4, (int32_t)(0u)), _mm_clmulepi64_si128(v_xc, v_mu4, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 32u)));
-+        v_xd = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xd, v_mu4, (int32_t)(0u)), _mm_clmulepi64_si128(v_xd, v_mu4, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 48u)));
-+        a_x = wuffs_base__slice_u8__subslice_i(a_x, 64u);
-+      }
-+    } while (0);
-+    v_mu2 = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC64__ECMA_X86_SSE42_FOLD2));
-+    v_xa = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xa, v_mu2, (int32_t)(0u)), _mm_clmulepi64_si128(v_xa, v_mu2, (int32_t)(17u))), v_xc);
-+    v_xb = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xb, v_mu2, (int32_t)(0u)), _mm_clmulepi64_si128(v_xb, v_mu2, (int32_t)(17u))), v_xd);
-+    if (((uint64_t)(a_x.len)) > 32u) {
-+      v_xa = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xa, v_mu2, (int32_t)(0u)), _mm_clmulepi64_si128(v_xa, v_mu2, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u)));
-+      v_xb = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xb, v_mu2, (int32_t)(0u)), _mm_clmulepi64_si128(v_xb, v_mu2, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16u)));
-+      a_x = wuffs_base__slice_u8__subslice_i(a_x, 32u);
-+    }
-+  } while (0);
-+  label__chain2__break:;
-+  v_mu1 = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC64__ECMA_X86_SSE42_FOLD1));
-+  v_xa = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xa, v_mu1, (int32_t)(0u)), _mm_clmulepi64_si128(v_xa, v_mu1, (int32_t)(17u))), v_xb);
-+  if (((uint64_t)(a_x.len)) > 24u) {
-+    v_xa = _mm_xor_si128(_mm_xor_si128(_mm_clmulepi64_si128(v_xa, v_mu1, (int32_t)(0u)), _mm_clmulepi64_si128(v_xa, v_mu1, (int32_t)(17u))), _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0u)));
-+    a_x = wuffs_base__slice_u8__subslice_i(a_x, 16u);
-+    if (((uint64_t)(a_x.len)) > 24u) {
-+      return wuffs_base__make_empty_struct();
-+    }
-+  }
-+  _mm_storeu_si128((__m128i*)(void*)(v_buf + (24u - ((uint64_t)(a_x.len)))), v_xa);
-+  wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(v_buf, ((24u - ((uint64_t)(a_x.len))) + 16u), 48), a_x);
-+  v_mu2 = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC64__ECMA_X86_SSE42_FOLD2));
-+  v_xa = _mm_lddqu_si128((const __m128i*)(const void*)(v_buf + 0u));
-+  v_xb = _mm_lddqu_si128((const __m128i*)(const void*)(v_buf + 16u));
-+  v_xc = _mm_lddqu_si128((const __m128i*)(const void*)(v_buf + 32u));
-+  v_xd = _mm_xor_si128(_mm_clmulepi64_si128(v_xa, v_mu2, (int32_t)(0u)), _mm_clmulepi64_si128(v_xa, v_mu2, (int32_t)(17u)));
-+  v_xe = _mm_xor_si128(_mm_clmulepi64_si128(v_xb, v_mu1, (int32_t)(0u)), _mm_clmulepi64_si128(v_xb, v_mu1, (int32_t)(17u)));
-+  v_xa = _mm_xor_si128(v_xd, _mm_xor_si128(v_xe, v_xc));
-+  v_mupx = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC64__ECMA_X86_SSE42_MUPX));
-+  v_xb = _mm_clmulepi64_si128(v_xa, v_mupx, (int32_t)(0u));
-+  v_xc = _mm_clmulepi64_si128(v_xb, v_mupx, (int32_t)(16u));
-+  v_s = ((uint64_t)(_mm_extract_epi64(_mm_xor_si128(_mm_xor_si128(v_xc, _mm_slli_si128(v_xb, (int32_t)(8u))), v_xa), (int32_t)(1u))));
-+  self->private_impl.f_state = (18446744073709551615u ^ v_s);
-+  return wuffs_base__make_empty_struct();
-+}
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
-+
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC64)
-+
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__DEFLATE)
-+
-+// ---------------- Status Codes Implementations
-+
-+const char wuffs_deflate__error__bad_huffman_code_over_subscribed[] = "#deflate: bad Huffman code (over-subscribed)";
-+const char wuffs_deflate__error__bad_huffman_code_under_subscribed[] = "#deflate: bad Huffman code (under-subscribed)";
-+const char wuffs_deflate__error__bad_huffman_code_length_count[] = "#deflate: bad Huffman code length count";
-+const char wuffs_deflate__error__bad_huffman_code_length_repetition[] = "#deflate: bad Huffman code length repetition";
-+const char wuffs_deflate__error__bad_huffman_code[] = "#deflate: bad Huffman code";
-+const char wuffs_deflate__error__bad_huffman_minimum_code_length[] = "#deflate: bad Huffman minimum code length";
-+const char wuffs_deflate__error__bad_block[] = "#deflate: bad block";
-+const char wuffs_deflate__error__bad_distance[] = "#deflate: bad distance";
-+const char wuffs_deflate__error__bad_distance_code_count[] = "#deflate: bad distance code count";
-+const char wuffs_deflate__error__bad_literal_length_code_count[] = "#deflate: bad literal/length code count";
-+const char wuffs_deflate__error__inconsistent_stored_block_length[] = "#deflate: inconsistent stored block length";
-+const char wuffs_deflate__error__missing_end_of_block_code[] = "#deflate: missing end-of-block code";
-+const char wuffs_deflate__error__no_huffman_codes[] = "#deflate: no Huffman codes";
-+const char wuffs_deflate__error__truncated_input[] = "#deflate: truncated input";
-+const char wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state[] = "#deflate: internal error: inconsistent Huffman decoder state";
-+const char wuffs_deflate__error__internal_error_inconsistent_i_o[] = "#deflate: internal error: inconsistent I/O";
-+const char wuffs_deflate__error__internal_error_inconsistent_distance[] = "#deflate: internal error: inconsistent distance";
-+const char wuffs_deflate__error__internal_error_inconsistent_n_bits[] = "#deflate: internal error: inconsistent n_bits";
-+
-+// ---------------- Private Consts
-+
-+static const uint8_t
-+WUFFS_DEFLATE__CODE_ORDER[19] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  16u, 17u, 18u, 0u, 8u, 7u, 9u, 6u,
-+  10u, 5u, 11u, 4u, 12u, 3u, 13u, 2u,
-+  14u, 1u, 15u,
-+};
-+
-+static const uint8_t
-+WUFFS_DEFLATE__REVERSE8[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 128u, 64u, 192u, 32u, 160u, 96u, 224u,
-+  16u, 144u, 80u, 208u, 48u, 176u, 112u, 240u,
-+  8u, 136u, 72u, 200u, 40u, 168u, 104u, 232u,
-+  24u, 152u, 88u, 216u, 56u, 184u, 120u, 248u,
-+  4u, 132u, 68u, 196u, 36u, 164u, 100u, 228u,
-+  20u, 148u, 84u, 212u, 52u, 180u, 116u, 244u,
-+  12u, 140u, 76u, 204u, 44u, 172u, 108u, 236u,
-+  28u, 156u, 92u, 220u, 60u, 188u, 124u, 252u,
-+  2u, 130u, 66u, 194u, 34u, 162u, 98u, 226u,
-+  18u, 146u, 82u, 210u, 50u, 178u, 114u, 242u,
-+  10u, 138u, 74u, 202u, 42u, 170u, 106u, 234u,
-+  26u, 154u, 90u, 218u, 58u, 186u, 122u, 250u,
-+  6u, 134u, 70u, 198u, 38u, 166u, 102u, 230u,
-+  22u, 150u, 86u, 214u, 54u, 182u, 118u, 246u,
-+  14u, 142u, 78u, 206u, 46u, 174u, 110u, 238u,
-+  30u, 158u, 94u, 222u, 62u, 190u, 126u, 254u,
-+  1u, 129u, 65u, 193u, 33u, 161u, 97u, 225u,
-+  17u, 145u, 81u, 209u, 49u, 177u, 113u, 241u,
-+  9u, 137u, 73u, 201u, 41u, 169u, 105u, 233u,
-+  25u, 153u, 89u, 217u, 57u, 185u, 121u, 249u,
-+  5u, 133u, 69u, 197u, 37u, 165u, 101u, 229u,
-+  21u, 149u, 85u, 213u, 53u, 181u, 117u, 245u,
-+  13u, 141u, 77u, 205u, 45u, 173u, 109u, 237u,
-+  29u, 157u, 93u, 221u, 61u, 189u, 125u, 253u,
-+  3u, 131u, 67u, 195u, 35u, 163u, 99u, 227u,
-+  19u, 147u, 83u, 211u, 51u, 179u, 115u, 243u,
-+  11u, 139u, 75u, 203u, 43u, 171u, 107u, 235u,
-+  27u, 155u, 91u, 219u, 59u, 187u, 123u, 251u,
-+  7u, 135u, 71u, 199u, 39u, 167u, 103u, 231u,
-+  23u, 151u, 87u, 215u, 55u, 183u, 119u, 247u,
-+  15u, 143u, 79u, 207u, 47u, 175u, 111u, 239u,
-+  31u, 159u, 95u, 223u, 63u, 191u, 127u, 255u,
-+};
-+
-+static const uint32_t
-+WUFFS_DEFLATE__LCODE_MAGIC_NUMBERS[32] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  1073741824u, 1073742080u, 1073742336u, 1073742592u, 1073742848u, 1073743104u, 1073743360u, 1073743616u,
-+  1073743888u, 1073744400u, 1073744912u, 1073745424u, 1073745952u, 1073746976u, 1073748000u, 1073749024u,
-+  1073750064u, 1073752112u, 1073754160u, 1073756208u, 1073758272u, 1073762368u, 1073766464u, 1073770560u,
-+  1073774672u, 1073782864u, 1073791056u, 1073799248u, 1073807104u, 134217728u, 134217728u, 134217728u,
-+};
-+
-+static const uint32_t
-+WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[32] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  1073741824u, 1073742080u, 1073742336u, 1073742592u, 1073742864u, 1073743376u, 1073743904u, 1073744928u,
-+  1073745968u, 1073748016u, 1073750080u, 1073754176u, 1073758288u, 1073766480u, 1073774688u, 1073791072u,
-+  1073807472u, 1073840240u, 1073873024u, 1073938560u, 1074004112u, 1074135184u, 1074266272u, 1074528416u,
-+  1074790576u, 1075314864u, 1075839168u, 1076887744u, 1077936336u, 1080033488u, 134217728u, 134217728u,
-+};
-+
-+#define WUFFS_DEFLATE__HUFFS_TABLE_SIZE 1024u
-+
-+#define WUFFS_DEFLATE__HUFFS_TABLE_MASK 1023u
-+
-+// ---------------- Private Initializer Prototypes
-+
-+// ---------------- Private Function Prototypes
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_deflate__decoder__do_transform_io(
-+    wuffs_deflate__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_deflate__decoder__decode_blocks(
-+    wuffs_deflate__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_deflate__decoder__decode_uncompressed(
-+    wuffs_deflate__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_deflate__decoder__init_fixed_huffman(
-+    wuffs_deflate__decoder* self);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_deflate__decoder__init_dynamic_huffman(
-+    wuffs_deflate__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_deflate__decoder__init_huff(
-+    wuffs_deflate__decoder* self,
-+    uint32_t a_which,
-+    uint32_t a_n_codes0,
-+    uint32_t a_n_codes1,
-+    uint32_t a_base_symbol);
-+
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_deflate__decoder__decode_huffman_bmi2(
-+    wuffs_deflate__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_deflate__decoder__decode_huffman_fast32(
-+    wuffs_deflate__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_deflate__decoder__decode_huffman_fast64(
-+    wuffs_deflate__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_deflate__decoder__decode_huffman_fast64__choosy_default(
-+    wuffs_deflate__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_deflate__decoder__decode_huffman_slow(
-+    wuffs_deflate__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+// ---------------- VTables
-+
-+const wuffs_base__io_transformer__func_ptrs
-+wuffs_deflate__decoder__func_ptrs_for__wuffs_base__io_transformer = {
-+  (wuffs_base__optional_u63(*)(const void*))(&wuffs_deflate__decoder__dst_history_retain_length),
-+  (uint64_t(*)(const void*,
-+      uint32_t))(&wuffs_deflate__decoder__get_quirk),
-+  (wuffs_base__status(*)(void*,
-+      uint32_t,
-+      uint64_t))(&wuffs_deflate__decoder__set_quirk),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__slice_u8))(&wuffs_deflate__decoder__transform_io),
-+  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_deflate__decoder__workbuf_len),
-+};
-+
-+// ---------------- Initializer Implementations
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_deflate__decoder__initialize(
-+    wuffs_deflate__decoder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options){
-   if (!self) {
--    return wuffs_base__utility__empty_rect_ie_u32();
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_rect_ie_u32();
-+  if (sizeof(*self) != sizeof_star_self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  }
-+  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
-+      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-   }
- 
--  return wuffs_base__utility__make_rect_ie_u32(
--      wuffs_base__u32__min(self->private_impl.f_frame_rect_x0, self->private_impl.f_width),
--      wuffs_base__u32__min(self->private_impl.f_frame_rect_y0, self->private_impl.f_height),
--      wuffs_base__u32__min(self->private_impl.f_frame_rect_x1, self->private_impl.f_width),
--      wuffs_base__u32__min(self->private_impl.f_dirty_max_excl_y, self->private_impl.f_height));
-+  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
-+    // The whole point of this if-check is to detect an uninitialized *self.
-+    // We disable the warning on GCC. Clang-5.0 does not have this warning.
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+#endif
-+    if (self->private_impl.magic != 0) {
-+      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+    }
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+  } else {
-+    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
-+      memset(self, 0, sizeof(*self));
-+      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-+    } else {
-+      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+    }
-+  }
-+
-+  self->private_impl.choosy_decode_huffman_fast64 = &wuffs_deflate__decoder__decode_huffman_fast64__choosy_default;
-+
-+  self->private_impl.magic = WUFFS_BASE__MAGIC;
-+  self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
-+      wuffs_base__io_transformer__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
-+      (const void*)(&wuffs_deflate__decoder__func_ptrs_for__wuffs_base__io_transformer);
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+wuffs_deflate__decoder*
-+wuffs_deflate__decoder__alloc(void) {
-+  wuffs_deflate__decoder* x =
-+      (wuffs_deflate__decoder*)(calloc(1, sizeof(wuffs_deflate__decoder)));
-+  if (!x) {
-+    return NULL;
-+  }
-+  if (wuffs_deflate__decoder__initialize(
-+      x, sizeof(wuffs_deflate__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+    free(x);
-+    return NULL;
-+  }
-+  return x;
-+}
-+
-+size_t
-+sizeof__wuffs_deflate__decoder(void) {
-+  return sizeof(wuffs_deflate__decoder);
- }
- 
--// -------- func gif.decoder.history_retain_length
-+// ---------------- Function Implementations
-+
-+// -------- func deflate.decoder.add_history
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_gif__decoder__history_retain_length(
--    const wuffs_gif__decoder* self) {
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_deflate__decoder__add_history(
-+    wuffs_deflate__decoder* self,
-+    wuffs_base__slice_u8 a_hist) {
-   if (!self) {
--    return 0;
-+    return wuffs_base__make_empty_struct();
-   }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_empty_struct();
-   }
- 
--  return 0u;
-+  wuffs_base__slice_u8 v_s = {0};
-+  uint64_t v_n_copied = 0;
-+  uint32_t v_already_full = 0;
-+
-+  v_s = a_hist;
-+  if (((uint64_t)(v_s.len)) >= 32768u) {
-+    v_s = wuffs_private_impl__slice_u8__suffix(v_s, 32768u);
-+    wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_history, 32768), v_s);
-+    self->private_impl.f_history_index = 32768u;
-+  } else {
-+    v_n_copied = wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_history, (self->private_impl.f_history_index & 32767u), 32768), v_s);
-+    if (v_n_copied < ((uint64_t)(v_s.len))) {
-+      v_s = wuffs_base__slice_u8__subslice_i(v_s, v_n_copied);
-+      v_n_copied = wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_history, 32768), v_s);
-+      self->private_impl.f_history_index = (((uint32_t)((v_n_copied & 32767u))) + 32768u);
-+    } else {
-+      v_already_full = 0u;
-+      if (self->private_impl.f_history_index >= 32768u) {
-+        v_already_full = 32768u;
-+      }
-+      self->private_impl.f_history_index = ((self->private_impl.f_history_index & 32767u) + ((uint32_t)((v_n_copied & 32767u))) + v_already_full);
-+    }
-+  }
-+  wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_history, 32768, 33025), wuffs_base__make_slice_u8(self->private_data.f_history, 33025));
-+  return wuffs_base__make_empty_struct();
- }
- 
--// -------- func gif.decoder.workbuf_len
-+// -------- func deflate.decoder.get_quirk
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_gif__decoder__workbuf_len(
--    const wuffs_gif__decoder* self) {
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_deflate__decoder__get_quirk(
-+    const wuffs_deflate__decoder* self,
-+    uint32_t a_key) {
-   if (!self) {
--    return wuffs_base__utility__empty_range_ii_u64();
-+    return 0;
-   }
-   if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-       (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_range_ii_u64();
-+    return 0;
-   }
- 
--  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
-+  return 0u;
- }
- 
--// -------- func gif.decoder.restart_frame
-+// -------- func deflate.decoder.set_quirk
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_gif__decoder__restart_frame(
--    wuffs_gif__decoder* self,
--    uint64_t a_index,
--    uint64_t a_io_position) {
-+wuffs_deflate__decoder__set_quirk(
-+    wuffs_deflate__decoder* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-   if (!self) {
-     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
-@@ -37252,28 +38578,52 @@ wuffs_gif__decoder__restart_frame(
-         : wuffs_base__error__initialize_not_called);
-   }
- 
--  if (self->private_impl.f_call_sequence < 32u) {
--    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
--  } else if (a_io_position == 0u) {
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+}
-+
-+// -------- func deflate.decoder.dst_history_retain_length
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
-+wuffs_deflate__decoder__dst_history_retain_length(
-+    const wuffs_deflate__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__make_optional_u63(false, 0u);
-   }
--  self->private_impl.f_delayed_num_decoded_frames = false;
--  self->private_impl.f_frame_config_io_position = a_io_position;
--  self->private_impl.f_num_decoded_frame_configs_value = a_index;
--  self->private_impl.f_num_decoded_frames_value = a_index;
--  wuffs_gif__decoder__reset_gc(self);
--  self->private_impl.f_call_sequence = 40u;
--  return wuffs_base__make_status(NULL);
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__make_optional_u63(false, 0u);
-+  }
-+
-+  return wuffs_base__utility__make_optional_u63(true, 0u);
- }
- 
--// -------- func gif.decoder.decode_frame_config
-+// -------- func deflate.decoder.workbuf_len
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_deflate__decoder__workbuf_len(
-+    const wuffs_deflate__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+
-+  return wuffs_base__utility__make_range_ii_u64(1u, 1u);
-+}
-+
-+// -------- func deflate.decoder.transform_io
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_gif__decoder__decode_frame_config(
--    wuffs_gif__decoder* self,
--    wuffs_base__frame_config* a_dst,
--    wuffs_base__io_buffer* a_src) {
-+wuffs_deflate__decoder__transform_io(
-+    wuffs_deflate__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-   if (!self) {
-     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
-@@ -37283,12 +38633,12 @@ wuffs_gif__decoder__decode_frame_config(
-         ? wuffs_base__error__disabled_by_previous_error
-         : wuffs_base__error__initialize_not_called);
-   }
--  if (!a_src) {
-+  if (!a_dst || !a_src) {
-     self->private_impl.magic = WUFFS_BASE__DISABLED;
-     return wuffs_base__make_status(wuffs_base__error__bad_argument);
-   }
-   if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 3)) {
-+      (self->private_impl.active_coroutine != 1)) {
-     self->private_impl.magic = WUFFS_BASE__DISABLED;
-     return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-   }
-@@ -37297,17 +38647,17 @@ wuffs_gif__decoder__decode_frame_config(
- 
-   wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0];
-+  uint32_t coro_susp_point = self->private_impl.p_transform_io;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
-     while (true) {
-       {
--        wuffs_base__status t_0 = wuffs_gif__decoder__do_decode_frame_config(self, a_dst, a_src);
-+        wuffs_base__status t_0 = wuffs_deflate__decoder__do_transform_io(self, a_dst, a_src, a_workbuf);
-         v_status = t_0;
-       }
-       if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_gif__error__truncated_input);
-+        status = wuffs_base__make_status(wuffs_deflate__error__truncated_input);
-         goto exit;
-       }
-       status = v_status;
-@@ -37315,14 +38665,14 @@ wuffs_gif__decoder__decode_frame_config(
-     }
- 
-     ok:
--    self->private_impl.p_decode_frame_config[0] = 0;
-+    self->private_impl.p_transform_io = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
-+  self->private_impl.p_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
- 
-   goto exit;
-   exit:
-@@ -37332,403 +38682,103 @@ wuffs_gif__decoder__decode_frame_config(
-   return status;
- }
- 
--// -------- func gif.decoder.do_decode_frame_config
-+// -------- func deflate.decoder.do_transform_io
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_gif__decoder__do_decode_frame_config(
--    wuffs_gif__decoder* self,
--    wuffs_base__frame_config* a_dst,
--    wuffs_base__io_buffer* a_src) {
-+wuffs_deflate__decoder__do_transform_io(
-+    wuffs_deflate__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint32_t v_background_color = 0;
--  uint8_t v_flags = 0;
-+  uint64_t v_mark = 0;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
-+  uint8_t* iop_a_dst = NULL;
-+  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-+    }
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0];
--  if (coro_susp_point) {
--    v_background_color = self->private_data.s_do_decode_frame_config[0].v_background_color;
--  }
-+  uint32_t coro_susp_point = self->private_impl.p_do_transform_io;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    self->private_impl.f_dirty_max_excl_y = 0u;
--    if ((self->private_impl.f_call_sequence & 16u) != 0u) {
--      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
--      goto exit;
--    } else if (self->private_impl.f_call_sequence == 32u) {
--    } else if (self->private_impl.f_call_sequence < 32u) {
--      if (a_src) {
--        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+    self->private_impl.choosy_decode_huffman_fast64 = (
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
-+        wuffs_base__cpu_arch__have_x86_bmi2() ? &wuffs_deflate__decoder__decode_huffman_bmi2 :
-+#endif
-+        self->private_impl.choosy_decode_huffman_fast64);
-+    while (true) {
-+      v_mark = ((uint64_t)(iop_a_dst - io0_a_dst));
-+      {
-+        if (a_dst) {
-+          a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+        }
-+        wuffs_base__status t_0 = wuffs_deflate__decoder__decode_blocks(self, a_dst, a_src);
-+        v_status = t_0;
-+        if (a_dst) {
-+          iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
-+        }
-       }
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      status = wuffs_gif__decoder__do_decode_image_config(self, NULL, a_src);
--      if (a_src) {
--        iop_a_src = a_src->data.ptr + a_src->meta.ri;
--      }
--      if (status.repr) {
--        goto suspend;
--      }
--    } else if (self->private_impl.f_call_sequence == 40u) {
--      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
--        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
--        goto exit;
--      }
--    } else if (self->private_impl.f_call_sequence == 64u) {
--      if (a_src) {
--        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--      }
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--      status = wuffs_gif__decoder__skip_frame(self, a_src);
--      if (a_src) {
--        iop_a_src = a_src->data.ptr + a_src->meta.ri;
--      }
--      if (status.repr) {
--        goto suspend;
--      }
--      if (self->private_impl.f_call_sequence >= 96u) {
--        status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--        goto ok;
--      }
--    } else {
--      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--      goto ok;
--    }
--    if ((self->private_impl.f_num_decoded_frame_configs_value > 0u) || (self->private_impl.f_call_sequence == 40u)) {
--      if (a_src) {
--        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--      }
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--      status = wuffs_gif__decoder__decode_up_to_id_part1(self, a_src);
--      if (a_src) {
--        iop_a_src = a_src->data.ptr + a_src->meta.ri;
--      }
--      if (status.repr) {
--        goto suspend;
--      }
--      if (self->private_impl.f_call_sequence >= 96u) {
--        status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--        goto ok;
--      }
--    }
--    v_background_color = self->private_impl.f_black_color_u32_argb_premul;
--    if ( ! self->private_impl.f_gc_has_transparent_index) {
--      v_background_color = self->private_impl.f_background_color_u32_argb_premul;
--      if (self->private_impl.f_quirks[1u] && (self->private_impl.f_num_decoded_frame_configs_value == 0u)) {
--        while (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
--        }
--        v_flags = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--        if ((v_flags & 128u) != 0u) {
--          v_background_color = self->private_impl.f_black_color_u32_argb_premul;
-+      if ( ! wuffs_base__status__is_suspension(&v_status)) {
-+        status = v_status;
-+        if (wuffs_base__status__is_error(&status)) {
-+          goto exit;
-+        } else if (wuffs_base__status__is_suspension(&status)) {
-+          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+          goto exit;
-         }
-+        goto ok;
-       }
--    }
--    if (a_dst != NULL) {
--      wuffs_base__frame_config__set(
--          a_dst,
--          wuffs_base__utility__make_rect_ie_u32(
--          wuffs_base__u32__min(self->private_impl.f_frame_rect_x0, self->private_impl.f_width),
--          wuffs_base__u32__min(self->private_impl.f_frame_rect_y0, self->private_impl.f_height),
--          wuffs_base__u32__min(self->private_impl.f_frame_rect_x1, self->private_impl.f_width),
--          wuffs_base__u32__min(self->private_impl.f_frame_rect_y1, self->private_impl.f_height)),
--          ((wuffs_base__flicks)(self->private_impl.f_gc_duration)),
--          self->private_impl.f_num_decoded_frame_configs_value,
--          self->private_impl.f_frame_config_io_position,
--          self->private_impl.f_gc_disposal,
--          ! self->private_impl.f_gc_has_transparent_index,
--          false,
--          v_background_color);
--    }
--    wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frame_configs_value, 1u);
--    self->private_impl.f_call_sequence = 64u;
--
--    ok:
--    self->private_impl.p_do_decode_frame_config[0] = 0;
--    goto exit;
--  }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_do_decode_frame_config[0].v_background_color = v_background_color;
--
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
--
--  return status;
--}
--
--// -------- func gif.decoder.skip_frame
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_gif__decoder__skip_frame(
--    wuffs_gif__decoder* self,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  uint8_t v_flags = 0;
--  uint8_t v_lw = 0;
--
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
--
--  uint32_t coro_susp_point = self->private_impl.p_skip_frame[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_0 = *iop_a_src++;
--      v_flags = t_0;
--    }
--    if ((v_flags & 128u) != 0u) {
--      self->private_data.s_skip_frame[0].scratch = (((uint32_t)(3u)) << (1u + (v_flags & 7u)));
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--      if (self->private_data.s_skip_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--        self->private_data.s_skip_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--        iop_a_src = io2_a_src;
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      iop_a_src += self->private_data.s_skip_frame[0].scratch;
--    }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_1 = *iop_a_src++;
--      v_lw = t_1;
--    }
--    if (v_lw > 8u) {
--      status = wuffs_base__make_status(wuffs_gif__error__bad_literal_width);
--      goto exit;
--    }
--    if (a_src) {
--      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--    }
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--    status = wuffs_gif__decoder__skip_blocks(self, a_src);
--    if (a_src) {
--      iop_a_src = a_src->data.ptr + a_src->meta.ri;
--    }
--    if (status.repr) {
--      goto suspend;
--    }
--    if (self->private_impl.f_quirks[0u]) {
--      self->private_impl.f_delayed_num_decoded_frames = true;
--    } else {
--      wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
--    }
--    wuffs_gif__decoder__reset_gc(self);
--    self->private_impl.f_call_sequence = 32u;
--
--    goto ok;
--    ok:
--    self->private_impl.p_skip_frame[0] = 0;
--    goto exit;
--  }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_skip_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
--
--  return status;
--}
--
--// -------- func gif.decoder.decode_frame
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_gif__decoder__decode_frame(
--    wuffs_gif__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--  if (!a_dst || !a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 4)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
--  }
--  self->private_impl.active_coroutine = 0;
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
--
--  uint32_t coro_susp_point = self->private_impl.p_decode_frame[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    while (true) {
--      {
--        wuffs_base__status t_0 = wuffs_gif__decoder__do_decode_frame(self,
--            a_dst,
--            a_src,
--            a_blend,
--            a_workbuf,
--            a_opts);
--        v_status = t_0;
--      }
--      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_gif__error__truncated_input);
--        goto exit;
--      }
-+      wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_transformed_history_count, wuffs_private_impl__io__count_since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst))));
-+      wuffs_deflate__decoder__add_history(self, wuffs_private_impl__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
-       status = v_status;
-       WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-     }
- 
-     ok:
--    self->private_impl.p_decode_frame[0] = 0;
-+    self->private_impl.p_do_transform_io = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 4 : 0;
-+  self->private_impl.p_do_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
-   goto exit;
-   exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--  }
--  return status;
--}
--
--// -------- func gif.decoder.do_decode_frame
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_gif__decoder__do_decode_frame(
--    wuffs_gif__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    if (self->private_impl.f_call_sequence == 64u) {
--    } else if (self->private_impl.f_call_sequence < 64u) {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      status = wuffs_gif__decoder__do_decode_frame_config(self, NULL, a_src);
--      if (status.repr) {
--        goto suspend;
--      }
--    } else {
--      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--      goto ok;
--    }
--    if (self->private_impl.f_quirks[5u] && ((self->private_impl.f_frame_rect_x0 == self->private_impl.f_frame_rect_x1) || (self->private_impl.f_frame_rect_y0 == self->private_impl.f_frame_rect_y1))) {
--      status = wuffs_base__make_status(wuffs_gif__error__bad_frame_size);
--      goto exit;
--    }
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--    status = wuffs_gif__decoder__decode_id_part1(self, a_dst, a_src, a_blend);
--    if (status.repr) {
--      goto suspend;
--    }
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--    status = wuffs_gif__decoder__decode_id_part2(self, a_dst, a_src, a_workbuf);
--    if (status.repr) {
--      goto suspend;
--    }
--    wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
--    wuffs_gif__decoder__reset_gc(self);
--    self->private_impl.f_call_sequence = 32u;
--
--    ok:
--    self->private_impl.p_do_decode_frame[0] = 0;
--    goto exit;
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-   }
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--
--  goto exit;
--  exit:
-   return status;
- }
- 
--// -------- func gif.decoder.reset_gc
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_gif__decoder__reset_gc(
--    wuffs_gif__decoder* self) {
--  self->private_impl.f_gc_has_transparent_index = false;
--  self->private_impl.f_gc_transparent_index = 0u;
--  self->private_impl.f_gc_disposal = 0u;
--  self->private_impl.f_gc_duration = 0u;
--  return wuffs_base__make_empty_struct();
--}
--
--// -------- func gif.decoder.decode_up_to_id_part1
-+// -------- func deflate.decoder.decode_blocks
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_gif__decoder__decode_up_to_id_part1(
--    wuffs_gif__decoder* self,
-+wuffs_deflate__decoder__decode_blocks(
-+    wuffs_deflate__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-     wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint8_t v_block_type = 0;
-+  uint32_t v_final = 0;
-+  uint32_t v_b0 = 0;
-+  uint32_t v_type = 0;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -37741,71 +38791,125 @@ wuffs_gif__decoder__decode_up_to_id_part1(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_up_to_id_part1[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_blocks;
-+  if (coro_susp_point) {
-+    v_final = self->private_data.s_decode_blocks.v_final;
-+  }
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if ((self->private_impl.f_frame_config_io_position == 0u) || (self->private_impl.f_num_decoded_frame_configs_value > 0u)) {
--      self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
--    }
--    while (true) {
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
-+    label__outer__continue:;
-+    while (v_final == 0u) {
-+      while (self->private_impl.f_n_bits < 3u) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint32_t t_0 = *iop_a_src++;
-+          v_b0 = t_0;
-         }
--        uint8_t t_0 = *iop_a_src++;
--        v_block_type = t_0;
-+        self->private_impl.f_bits |= (v_b0 << (self->private_impl.f_n_bits & 3u));
-+        self->private_impl.f_n_bits = ((self->private_impl.f_n_bits & 3u) + 8u);
-       }
--      if (v_block_type == 33u) {
-+      v_final = (self->private_impl.f_bits & 1u);
-+      v_type = ((self->private_impl.f_bits >> 1u) & 3u);
-+      self->private_impl.f_bits >>= 3u;
-+      self->private_impl.f_n_bits -= 3u;
-+      if (v_type == 0u) {
-         if (a_src) {
-           a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-         }
-         WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--        status = wuffs_gif__decoder__decode_extension(self, a_src);
-+        status = wuffs_deflate__decoder__decode_uncompressed(self, a_dst, a_src);
-         if (a_src) {
-           iop_a_src = a_src->data.ptr + a_src->meta.ri;
-         }
-         if (status.repr) {
-           goto suspend;
-         }
--      } else if (v_block_type == 44u) {
--        if (self->private_impl.f_delayed_num_decoded_frames) {
--          self->private_impl.f_delayed_num_decoded_frames = false;
--          wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
-+        continue;
-+      } else if (v_type == 1u) {
-+        v_status = wuffs_deflate__decoder__init_fixed_huffman(self);
-+        if ( ! wuffs_base__status__is_ok(&v_status)) {
-+          status = v_status;
-+          if (wuffs_base__status__is_error(&status)) {
-+            goto exit;
-+          } else if (wuffs_base__status__is_suspension(&status)) {
-+            status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+            goto exit;
-+          }
-+          goto ok;
-         }
-+      } else if (v_type == 2u) {
-         if (a_src) {
-           a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-         }
-         WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--        status = wuffs_gif__decoder__decode_id_part0(self, a_src);
-+        status = wuffs_deflate__decoder__init_dynamic_huffman(self, a_src);
-         if (a_src) {
-           iop_a_src = a_src->data.ptr + a_src->meta.ri;
-         }
-         if (status.repr) {
-           goto suspend;
-         }
--        break;
-       } else {
--        if (self->private_impl.f_delayed_num_decoded_frames) {
--          self->private_impl.f_delayed_num_decoded_frames = false;
--          wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
-+        status = wuffs_base__make_status(wuffs_deflate__error__bad_block);
-+        goto exit;
-+      }
-+      self->private_impl.f_end_of_block = false;
-+      while (true) {
-+        if (sizeof(void*) == 4u) {
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          v_status = wuffs_deflate__decoder__decode_huffman_fast32(self, a_dst, a_src);
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+        } else {
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          v_status = wuffs_deflate__decoder__decode_huffman_fast64(self, a_dst, a_src);
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+        }
-+        if (wuffs_base__status__is_error(&v_status)) {
-+          status = v_status;
-+          goto exit;
-+        }
-+        if (self->private_impl.f_end_of_block) {
-+          goto label__outer__continue;
-+        }
-+        if (a_src) {
-+          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+        }
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+        status = wuffs_deflate__decoder__decode_huffman_slow(self, a_dst, a_src);
-+        if (a_src) {
-+          iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+        }
-+        if (status.repr) {
-+          goto suspend;
-+        }
-+        if (self->private_impl.f_end_of_block) {
-+          goto label__outer__continue;
-         }
--        self->private_impl.f_call_sequence = 96u;
--        break;
-       }
-     }
- 
--    goto ok;
-     ok:
--    self->private_impl.p_decode_up_to_id_part1[0] = 0;
-+    self->private_impl.p_decode_blocks = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_up_to_id_part1[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.p_decode_blocks = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_blocks.v_final = v_final;
- 
-   goto exit;
-   exit:
-@@ -37816,18 +38920,32 @@ wuffs_gif__decoder__decode_up_to_id_part1(
-   return status;
- }
- 
--// -------- func gif.decoder.decode_header
-+// -------- func deflate.decoder.decode_uncompressed
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_gif__decoder__decode_header(
--    wuffs_gif__decoder* self,
-+wuffs_deflate__decoder__decode_uncompressed(
-+    wuffs_deflate__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-     wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint8_t v_c[6] = {0};
--  uint32_t v_i = 0;
-+  uint32_t v_length = 0;
-+  uint32_t v_n_copied = 0;
- 
-+  uint8_t* iop_a_dst = NULL;
-+  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-+    }
-+  }
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -37839,50 +38957,85 @@ wuffs_gif__decoder__decode_header(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_header[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_uncompressed;
-   if (coro_susp_point) {
--    memcpy(v_c, self->private_data.s_decode_header[0].v_c, sizeof(v_c));
--    v_i = self->private_data.s_decode_header[0].v_i;
-+    v_length = self->private_data.s_decode_uncompressed.v_length;
-   }
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    while (v_i < 6u) {
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
-+    if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
-+      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
-+      goto exit;
-+    }
-+    self->private_impl.f_n_bits = 0u;
-+    self->private_impl.f_bits = 0u;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      uint32_t t_0;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_decode_uncompressed.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_uncompressed.scratch;
-+          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
-+          *scratch <<= 8;
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
-+          if (num_bits_0 == 24) {
-+            t_0 = ((uint32_t)(*scratch));
-+            break;
-+          }
-+          num_bits_0 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_0)) << 56;
-         }
--        uint8_t t_0 = *iop_a_src++;
--        v_c[v_i] = t_0;
-       }
--      v_i += 1u;
-+      v_length = t_0;
-     }
--    if ((v_c[0u] != 71u) ||
--        (v_c[1u] != 73u) ||
--        (v_c[2u] != 70u) ||
--        (v_c[3u] != 56u) ||
--        ((v_c[4u] != 55u) && (v_c[4u] != 57u)) ||
--        (v_c[5u] != 97u)) {
--      status = wuffs_base__make_status(wuffs_gif__error__bad_header);
-+    if ((((v_length) & 0xFFFFu) + ((v_length) >> (32u - 16u))) != 65535u) {
-+      status = wuffs_base__make_status(wuffs_deflate__error__inconsistent_stored_block_length);
-       goto exit;
-     }
-+    v_length = ((v_length) & 0xFFFFu);
-+    while (true) {
-+      v_n_copied = wuffs_private_impl__io_writer__limited_copy_u32_from_reader(
-+          &iop_a_dst, io2_a_dst,v_length, &iop_a_src, io2_a_src);
-+      if (v_length <= v_n_copied) {
-+        status = wuffs_base__make_status(NULL);
-+        goto ok;
-+      }
-+      v_length -= v_n_copied;
-+      if (((uint64_t)(io2_a_dst - iop_a_dst)) == 0u) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
-+      } else {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
-+      }
-+    }
- 
--    goto ok;
-     ok:
--    self->private_impl.p_decode_header[0] = 0;
-+    self->private_impl.p_decode_uncompressed = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_header[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  memcpy(self->private_data.s_decode_header[0].v_c, v_c, sizeof(v_c));
--  self->private_data.s_decode_header[0].v_i = v_i;
-+  self->private_impl.p_decode_uncompressed = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_uncompressed.v_length = v_length;
- 
-   goto exit;
-   exit:
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+  }
-   if (a_src && a_src->data.ptr) {
-     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
-@@ -37890,21 +39043,80 @@ wuffs_gif__decoder__decode_header(
-   return status;
- }
- 
--// -------- func gif.decoder.decode_lsd
-+// -------- func deflate.decoder.init_fixed_huffman
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_gif__decoder__decode_lsd(
--    wuffs_gif__decoder* self,
-+wuffs_deflate__decoder__init_fixed_huffman(
-+    wuffs_deflate__decoder* self) {
-+  uint32_t v_i = 0;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  while (v_i < 144u) {
-+    self->private_data.f_code_lengths[v_i] = 8u;
-+    v_i += 1u;
-+  }
-+  while (v_i < 256u) {
-+    self->private_data.f_code_lengths[v_i] = 9u;
-+    v_i += 1u;
-+  }
-+  while (v_i < 280u) {
-+    self->private_data.f_code_lengths[v_i] = 7u;
-+    v_i += 1u;
-+  }
-+  while (v_i < 288u) {
-+    self->private_data.f_code_lengths[v_i] = 8u;
-+    v_i += 1u;
-+  }
-+  while (v_i < 320u) {
-+    self->private_data.f_code_lengths[v_i] = 5u;
-+    v_i += 1u;
-+  }
-+  v_status = wuffs_deflate__decoder__init_huff(self,
-+      0u,
-+      0u,
-+      288u,
-+      257u);
-+  if (wuffs_base__status__is_error(&v_status)) {
-+    return v_status;
-+  }
-+  v_status = wuffs_deflate__decoder__init_huff(self,
-+      1u,
-+      288u,
-+      320u,
-+      0u);
-+  if (wuffs_base__status__is_error(&v_status)) {
-+    return v_status;
-+  }
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+// -------- func deflate.decoder.init_dynamic_huffman
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_deflate__decoder__init_dynamic_huffman(
-+    wuffs_deflate__decoder* self,
-     wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint8_t v_flags = 0;
--  uint8_t v_background_color_index = 0;
--  uint32_t v_num_palette_entries = 0;
-+  uint32_t v_bits = 0;
-+  uint32_t v_n_bits = 0;
-+  uint32_t v_b0 = 0;
-+  uint32_t v_n_lit = 0;
-+  uint32_t v_n_dist = 0;
-+  uint32_t v_n_clen = 0;
-   uint32_t v_i = 0;
--  uint32_t v_j = 0;
--  uint32_t v_argb = 0;
-+  uint32_t v_b1 = 0;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+  uint32_t v_mask = 0;
-+  uint32_t v_table_entry = 0;
-+  uint32_t v_table_entry_n_bits = 0;
-+  uint32_t v_b2 = 0;
-+  uint32_t v_n_extra_bits = 0;
-+  uint8_t v_rep_symbol = 0;
-+  uint32_t v_rep_count = 0;
-+  uint32_t v_b3 = 0;
- 
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -37917,172 +39129,215 @@ wuffs_gif__decoder__decode_lsd(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_lsd[0];
-+  uint32_t coro_susp_point = self->private_impl.p_init_dynamic_huffman;
-   if (coro_susp_point) {
--    v_flags = self->private_data.s_decode_lsd[0].v_flags;
--    v_background_color_index = self->private_data.s_decode_lsd[0].v_background_color_index;
--    v_num_palette_entries = self->private_data.s_decode_lsd[0].v_num_palette_entries;
--    v_i = self->private_data.s_decode_lsd[0].v_i;
-+    v_bits = self->private_data.s_init_dynamic_huffman.v_bits;
-+    v_n_bits = self->private_data.s_init_dynamic_huffman.v_n_bits;
-+    v_n_lit = self->private_data.s_init_dynamic_huffman.v_n_lit;
-+    v_n_dist = self->private_data.s_init_dynamic_huffman.v_n_dist;
-+    v_n_clen = self->private_data.s_init_dynamic_huffman.v_n_clen;
-+    v_i = self->private_data.s_init_dynamic_huffman.v_i;
-+    v_mask = self->private_data.s_init_dynamic_huffman.v_mask;
-+    v_n_extra_bits = self->private_data.s_init_dynamic_huffman.v_n_extra_bits;
-+    v_rep_symbol = self->private_data.s_init_dynamic_huffman.v_rep_symbol;
-+    v_rep_count = self->private_data.s_init_dynamic_huffman.v_rep_count;
-   }
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      uint32_t t_0;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--        t_0 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--        iop_a_src += 2;
--      } else {
--        self->private_data.s_decode_lsd[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--        while (true) {
-+    v_bits = self->private_impl.f_bits;
-+    v_n_bits = self->private_impl.f_n_bits;
-+    while (v_n_bits < 14u) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint32_t t_0 = *iop_a_src++;
-+        v_b0 = t_0;
-+      }
-+      v_bits |= (v_b0 << v_n_bits);
-+      v_n_bits += 8u;
-+    }
-+    v_n_lit = (((v_bits) & 0x1Fu) + 257u);
-+    if (v_n_lit > 286u) {
-+      status = wuffs_base__make_status(wuffs_deflate__error__bad_literal_length_code_count);
-+      goto exit;
-+    }
-+    v_bits >>= 5u;
-+    v_n_dist = (((v_bits) & 0x1Fu) + 1u);
-+    if (v_n_dist > 30u) {
-+      status = wuffs_base__make_status(wuffs_deflate__error__bad_distance_code_count);
-+      goto exit;
-+    }
-+    v_bits >>= 5u;
-+    v_n_clen = (((v_bits) & 0xFu) + 4u);
-+    v_bits >>= 4u;
-+    v_n_bits -= 14u;
-+    v_i = 0u;
-+    while (v_i < v_n_clen) {
-+      while (v_n_bits < 3u) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint64_t* scratch = &self->private_data.s_decode_lsd[0].scratch;
--          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
--          *scratch <<= 8;
--          *scratch >>= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
--          if (num_bits_0 == 8) {
--            t_0 = ((uint32_t)(*scratch));
--            break;
--          }
--          num_bits_0 += 8u;
--          *scratch |= ((uint64_t)(num_bits_0)) << 56;
-+          uint32_t t_1 = *iop_a_src++;
-+          v_b1 = t_1;
-         }
-+        v_bits |= (v_b1 << v_n_bits);
-+        v_n_bits += 8u;
-       }
--      self->private_impl.f_width = t_0;
-+      self->private_data.f_code_lengths[WUFFS_DEFLATE__CODE_ORDER[v_i]] = ((uint8_t)((v_bits & 7u)));
-+      v_bits >>= 3u;
-+      v_n_bits -= 3u;
-+      v_i += 1u;
-     }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--      uint32_t t_1;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--        t_1 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--        iop_a_src += 2;
--      } else {
--        self->private_data.s_decode_lsd[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--        while (true) {
-+    while (v_i < 19u) {
-+      self->private_data.f_code_lengths[WUFFS_DEFLATE__CODE_ORDER[v_i]] = 0u;
-+      v_i += 1u;
-+    }
-+    v_status = wuffs_deflate__decoder__init_huff(self,
-+        0u,
-+        0u,
-+        19u,
-+        4095u);
-+    if (wuffs_base__status__is_error(&v_status)) {
-+      status = v_status;
-+      goto exit;
-+    }
-+    v_mask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u);
-+    v_i = 0u;
-+    while (v_i < (v_n_lit + v_n_dist)) {
-+      while (true) {
-+        v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_mask)];
-+        v_table_entry_n_bits = (v_table_entry & 15u);
-+        if (v_n_bits >= v_table_entry_n_bits) {
-+          v_bits >>= v_table_entry_n_bits;
-+          v_n_bits -= v_table_entry_n_bits;
-+          break;
-+        }
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint64_t* scratch = &self->private_data.s_decode_lsd[0].scratch;
--          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
--          *scratch <<= 8;
--          *scratch >>= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
--          if (num_bits_1 == 8) {
--            t_1 = ((uint32_t)(*scratch));
--            break;
--          }
--          num_bits_1 += 8u;
--          *scratch |= ((uint64_t)(num_bits_1)) << 56;
-+          uint32_t t_2 = *iop_a_src++;
-+          v_b2 = t_2;
-         }
-+        v_bits |= (v_b2 << v_n_bits);
-+        v_n_bits += 8u;
-       }
--      self->private_impl.f_height = t_1;
--    }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
-+      if ((v_table_entry >> 24u) != 128u) {
-+        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+        goto exit;
-       }
--      uint8_t t_2 = *iop_a_src++;
--      v_flags = t_2;
--    }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
-+      v_table_entry = ((v_table_entry >> 8u) & 255u);
-+      if (v_table_entry < 16u) {
-+        self->private_data.f_code_lengths[v_i] = ((uint8_t)(v_table_entry));
-+        v_i += 1u;
-+        continue;
-       }
--      uint8_t t_3 = *iop_a_src++;
--      v_background_color_index = t_3;
--    }
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
--    if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--      goto suspend;
--    }
--    iop_a_src++;
--    v_i = 0u;
--    self->private_impl.f_has_global_palette = ((v_flags & 128u) != 0u);
--    if (self->private_impl.f_has_global_palette) {
--      v_num_palette_entries = (((uint32_t)(1u)) << (1u + (v_flags & 7u)));
--      while (v_i < v_num_palette_entries) {
-+      v_n_extra_bits = 0u;
-+      v_rep_symbol = 0u;
-+      v_rep_count = 0u;
-+      if (v_table_entry == 16u) {
-+        v_n_extra_bits = 2u;
-+        if (v_i <= 0u) {
-+          status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_length_repetition);
-+          goto exit;
-+        }
-+        v_rep_symbol = ((uint8_t)(self->private_data.f_code_lengths[(v_i - 1u)] & 15u));
-+        v_rep_count = 3u;
-+      } else if (v_table_entry == 17u) {
-+        v_n_extra_bits = 3u;
-+        v_rep_symbol = 0u;
-+        v_rep_count = 3u;
-+      } else if (v_table_entry == 18u) {
-+        v_n_extra_bits = 7u;
-+        v_rep_symbol = 0u;
-+        v_rep_count = 11u;
-+      } else {
-+        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+        goto exit;
-+      }
-+      while (v_n_bits < v_n_extra_bits) {
-         {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
--          uint32_t t_4;
--          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
--            t_4 = ((uint32_t)(wuffs_base__peek_u24be__no_bounds_check(iop_a_src)));
--            iop_a_src += 3;
--          } else {
--            self->private_data.s_decode_lsd[0].scratch = 0;
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
--            while (true) {
--              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                goto suspend;
--              }
--              uint64_t* scratch = &self->private_data.s_decode_lsd[0].scratch;
--              uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFFu));
--              *scratch >>= 8;
--              *scratch <<= 8;
--              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4);
--              if (num_bits_4 == 16) {
--                t_4 = ((uint32_t)(*scratch >> 40));
--                break;
--              }
--              num_bits_4 += 8u;
--              *scratch |= ((uint64_t)(num_bits_4));
--            }
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-           }
--          v_argb = t_4;
-+          uint32_t t_3 = *iop_a_src++;
-+          v_b3 = t_3;
-         }
--        v_argb |= 4278190080u;
--        self->private_data.f_palettes[0u][((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u)));
--        self->private_data.f_palettes[0u][((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u)));
--        self->private_data.f_palettes[0u][((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u)));
--        self->private_data.f_palettes[0u][((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u)));
--        v_i += 1u;
-+        v_bits |= (v_b3 << v_n_bits);
-+        v_n_bits += 8u;
-       }
--      if (self->private_impl.f_quirks[2u]) {
--        if ((v_background_color_index != 0u) && (((uint32_t)(v_background_color_index)) < v_num_palette_entries)) {
--          v_j = (4u * ((uint32_t)(v_background_color_index)));
--          self->private_impl.f_background_color_u32_argb_premul = ((((uint32_t)(self->private_data.f_palettes[0u][(v_j + 0u)])) << 0u) |
--              (((uint32_t)(self->private_data.f_palettes[0u][(v_j + 1u)])) << 8u) |
--              (((uint32_t)(self->private_data.f_palettes[0u][(v_j + 2u)])) << 16u) |
--              (((uint32_t)(self->private_data.f_palettes[0u][(v_j + 3u)])) << 24u));
--        } else {
--          self->private_impl.f_background_color_u32_argb_premul = 77u;
-+      v_rep_count += ((v_bits) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U32(v_n_extra_bits));
-+      v_bits >>= v_n_extra_bits;
-+      v_n_bits -= v_n_extra_bits;
-+      while (v_rep_count > 0u) {
-+        if (v_i >= (v_n_lit + v_n_dist)) {
-+          status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_length_count);
-+          goto exit;
-         }
-+        self->private_data.f_code_lengths[v_i] = v_rep_symbol;
-+        v_i += 1u;
-+        v_rep_count -= 1u;
-       }
-     }
--    while (v_i < 256u) {
--      self->private_data.f_palettes[0u][((4u * v_i) + 0u)] = 0u;
--      self->private_data.f_palettes[0u][((4u * v_i) + 1u)] = 0u;
--      self->private_data.f_palettes[0u][((4u * v_i) + 2u)] = 0u;
--      self->private_data.f_palettes[0u][((4u * v_i) + 3u)] = 255u;
--      v_i += 1u;
-+    if (v_i != (v_n_lit + v_n_dist)) {
-+      status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_length_count);
-+      goto exit;
-+    }
-+    if (self->private_data.f_code_lengths[256u] == 0u) {
-+      status = wuffs_base__make_status(wuffs_deflate__error__missing_end_of_block_code);
-+      goto exit;
-+    }
-+    v_status = wuffs_deflate__decoder__init_huff(self,
-+        0u,
-+        0u,
-+        v_n_lit,
-+        257u);
-+    if (wuffs_base__status__is_error(&v_status)) {
-+      status = v_status;
-+      goto exit;
-+    }
-+    v_status = wuffs_deflate__decoder__init_huff(self,
-+        1u,
-+        v_n_lit,
-+        (v_n_lit + v_n_dist),
-+        0u);
-+    if (wuffs_base__status__is_error(&v_status)) {
-+      status = v_status;
-+      goto exit;
-     }
-+    self->private_impl.f_bits = v_bits;
-+    self->private_impl.f_n_bits = v_n_bits;
- 
-     goto ok;
-     ok:
--    self->private_impl.p_decode_lsd[0] = 0;
-+    self->private_impl.p_init_dynamic_huffman = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_lsd[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_decode_lsd[0].v_flags = v_flags;
--  self->private_data.s_decode_lsd[0].v_background_color_index = v_background_color_index;
--  self->private_data.s_decode_lsd[0].v_num_palette_entries = v_num_palette_entries;
--  self->private_data.s_decode_lsd[0].v_i = v_i;
-+  self->private_impl.p_init_dynamic_huffman = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_init_dynamic_huffman.v_bits = v_bits;
-+  self->private_data.s_init_dynamic_huffman.v_n_bits = v_n_bits;
-+  self->private_data.s_init_dynamic_huffman.v_n_lit = v_n_lit;
-+  self->private_data.s_init_dynamic_huffman.v_n_dist = v_n_dist;
-+  self->private_data.s_init_dynamic_huffman.v_n_clen = v_n_clen;
-+  self->private_data.s_init_dynamic_huffman.v_i = v_i;
-+  self->private_data.s_init_dynamic_huffman.v_mask = v_mask;
-+  self->private_data.s_init_dynamic_huffman.v_n_extra_bits = v_n_extra_bits;
-+  self->private_data.s_init_dynamic_huffman.v_rep_symbol = v_rep_symbol;
-+  self->private_data.s_init_dynamic_huffman.v_rep_count = v_rep_count;
- 
-   goto exit;
-   exit:
-@@ -38093,185 +39348,299 @@ wuffs_gif__decoder__decode_lsd(
-   return status;
- }
- 
--// -------- func gif.decoder.decode_extension
-+// -------- func deflate.decoder.init_huff
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_gif__decoder__decode_extension(
--    wuffs_gif__decoder* self,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  uint8_t v_label = 0;
-+wuffs_deflate__decoder__init_huff(
-+    wuffs_deflate__decoder* self,
-+    uint32_t a_which,
-+    uint32_t a_n_codes0,
-+    uint32_t a_n_codes1,
-+    uint32_t a_base_symbol) {
-+  uint16_t v_counts[16] = {0};
-+  uint32_t v_i = 0;
-+  uint32_t v_remaining = 0;
-+  uint16_t v_offsets[16] = {0};
-+  uint32_t v_n_symbols = 0;
-+  uint32_t v_count = 0;
-+  uint16_t v_symbols[320] = {0};
-+  uint32_t v_min_cl = 0;
-+  uint32_t v_max_cl = 0;
-+  uint32_t v_initial_high_bits = 0;
-+  uint32_t v_prev_cl = 0;
-+  uint32_t v_prev_redirect_key = 0;
-+  uint32_t v_top = 0;
-+  uint32_t v_next_top = 0;
-+  uint32_t v_code = 0;
-+  uint32_t v_key = 0;
-+  uint32_t v_value = 0;
-+  uint32_t v_cl = 0;
-+  uint32_t v_redirect_key = 0;
-+  uint32_t v_j = 0;
-+  uint32_t v_reversed_key = 0;
-+  uint32_t v_symbol = 0;
-+  uint32_t v_high_bits = 0;
-+  uint32_t v_delta = 0;
- 
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
-+  v_i = a_n_codes0;
-+  while (v_i < a_n_codes1) {
-+    if (v_counts[((uint8_t)(self->private_data.f_code_lengths[v_i] & 15u))] >= 320u) {
-+      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+    }
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+    v_counts[((uint8_t)(self->private_data.f_code_lengths[v_i] & 15u))] += 1u;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+    v_i += 1u;
-   }
--
--  uint32_t coro_susp_point = self->private_impl.p_decode_extension[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_0 = *iop_a_src++;
--      v_label = t_0;
-+  if ((((uint32_t)(v_counts[0u])) + a_n_codes0) == a_n_codes1) {
-+    return wuffs_base__make_status(wuffs_deflate__error__no_huffman_codes);
-+  }
-+  v_remaining = 1u;
-+  v_i = 1u;
-+  while (v_i <= 15u) {
-+    if (v_remaining > 1073741824u) {
-+      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-     }
--    if (v_label == 249u) {
--      if (a_src) {
--        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--      }
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--      status = wuffs_gif__decoder__decode_gc(self, a_src);
--      if (a_src) {
--        iop_a_src = a_src->data.ptr + a_src->meta.ri;
--      }
--      if (status.repr) {
--        goto suspend;
--      }
--      status = wuffs_base__make_status(NULL);
--      goto ok;
--    } else if (v_label == 255u) {
--      if (a_src) {
--        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--      }
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--      status = wuffs_gif__decoder__decode_ae(self, a_src);
--      if (a_src) {
--        iop_a_src = a_src->data.ptr + a_src->meta.ri;
--      }
--      if (status.repr) {
--        goto suspend;
-+    v_remaining <<= 1u;
-+    if (v_remaining < ((uint32_t)(v_counts[v_i]))) {
-+      return wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_over_subscribed);
-+    }
-+    v_remaining -= ((uint32_t)(v_counts[v_i]));
-+    v_i += 1u;
-+  }
-+  if (v_remaining != 0u) {
-+    if ((a_which == 1u) && (v_counts[1u] == 1u) && ((((uint32_t)(v_counts[0u])) + a_n_codes0 + 1u) == a_n_codes1)) {
-+      v_i = 0u;
-+      while (v_i <= 29u) {
-+        if (self->private_data.f_code_lengths[(a_n_codes0 + v_i)] == 1u) {
-+          self->private_impl.f_n_huffs_bits[1u] = 1u;
-+          self->private_data.f_huffs[1u][0u] = (WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[v_i] | 1u);
-+          self->private_data.f_huffs[1u][1u] = (WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[31u] | 1u);
-+          return wuffs_base__make_status(NULL);
-+        }
-+        v_i += 1u;
-       }
--      status = wuffs_base__make_status(NULL);
--      goto ok;
-     }
--    if (a_src) {
--      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+    return wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_under_subscribed);
-+  }
-+  v_i = 1u;
-+  while (v_i <= 15u) {
-+    v_offsets[v_i] = ((uint16_t)(v_n_symbols));
-+    v_count = ((uint32_t)(v_counts[v_i]));
-+    if (v_n_symbols > (320u - v_count)) {
-+      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-     }
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--    status = wuffs_gif__decoder__skip_blocks(self, a_src);
--    if (a_src) {
--      iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+    v_n_symbols = (v_n_symbols + v_count);
-+    v_i += 1u;
-+  }
-+  if (v_n_symbols > 288u) {
-+    return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+  }
-+  v_i = a_n_codes0;
-+  while (v_i < a_n_codes1) {
-+    if (v_i < a_n_codes0) {
-+      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-     }
--    if (status.repr) {
--      goto suspend;
-+    if (self->private_data.f_code_lengths[v_i] != 0u) {
-+      if (v_offsets[((uint8_t)(self->private_data.f_code_lengths[v_i] & 15u))] >= 320u) {
-+        return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+      }
-+      v_symbols[v_offsets[((uint8_t)(self->private_data.f_code_lengths[v_i] & 15u))]] = ((uint16_t)((v_i - a_n_codes0)));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+      v_offsets[((uint8_t)(self->private_data.f_code_lengths[v_i] & 15u))] += 1u;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-     }
--
--    ok:
--    self->private_impl.p_decode_extension[0] = 0;
--    goto exit;
--  }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_extension[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+    v_i += 1u;
-   }
--
--  return status;
--}
--
--// -------- func gif.decoder.skip_blocks
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_gif__decoder__skip_blocks(
--    wuffs_gif__decoder* self,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  uint8_t v_block_size = 0;
--
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
-+  v_min_cl = 1u;
-+  while (true) {
-+    if (v_counts[v_min_cl] != 0u) {
-+      break;
-+    }
-+    if (v_min_cl >= 9u) {
-+      return wuffs_base__make_status(wuffs_deflate__error__bad_huffman_minimum_code_length);
-+    }
-+    v_min_cl += 1u;
-   }
--
--  uint32_t coro_susp_point = self->private_impl.p_skip_blocks[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    while (true) {
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
-+  v_max_cl = 15u;
-+  while (true) {
-+    if (v_counts[v_max_cl] != 0u) {
-+      break;
-+    }
-+    if (v_max_cl <= 1u) {
-+      return wuffs_base__make_status(wuffs_deflate__error__no_huffman_codes);
-+    }
-+    v_max_cl -= 1u;
-+  }
-+  if (v_max_cl <= 9u) {
-+    self->private_impl.f_n_huffs_bits[a_which] = v_max_cl;
-+  } else {
-+    self->private_impl.f_n_huffs_bits[a_which] = 9u;
-+  }
-+  v_i = 0u;
-+  if ((v_n_symbols != ((uint32_t)(v_offsets[v_max_cl]))) || (v_n_symbols != ((uint32_t)(v_offsets[15u])))) {
-+    return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+  }
-+  if ((a_n_codes0 + ((uint32_t)(v_symbols[0u]))) >= 320u) {
-+    return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+  }
-+  v_initial_high_bits = 512u;
-+  if (v_max_cl < 9u) {
-+    v_initial_high_bits = (((uint32_t)(1u)) << v_max_cl);
-+  }
-+  v_prev_cl = ((uint32_t)(((uint8_t)(self->private_data.f_code_lengths[(a_n_codes0 + ((uint32_t)(v_symbols[0u])))] & 15u))));
-+  v_prev_redirect_key = 4294967295u;
-+  v_top = 0u;
-+  v_next_top = 512u;
-+  v_code = 0u;
-+  v_key = 0u;
-+  v_value = 0u;
-+  while (true) {
-+    if ((a_n_codes0 + ((uint32_t)(v_symbols[v_i]))) >= 320u) {
-+      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+    }
-+    v_cl = ((uint32_t)(((uint8_t)(self->private_data.f_code_lengths[(a_n_codes0 + ((uint32_t)(v_symbols[v_i])))] & 15u))));
-+    if (v_cl > v_prev_cl) {
-+      v_code <<= (v_cl - v_prev_cl);
-+      if (v_code >= 32768u) {
-+        return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+      }
-+    }
-+    v_prev_cl = v_cl;
-+    v_key = v_code;
-+    if (v_cl > 9u) {
-+      v_cl -= 9u;
-+      v_redirect_key = ((v_key >> v_cl) & 511u);
-+      v_key = ((v_key) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U32(v_cl));
-+      if (v_prev_redirect_key != v_redirect_key) {
-+        v_prev_redirect_key = v_redirect_key;
-+        v_remaining = (((uint32_t)(1u)) << v_cl);
-+        v_j = v_prev_cl;
-+        while (v_j <= 15u) {
-+          if (v_remaining <= ((uint32_t)(v_counts[v_j]))) {
-+            break;
-+          }
-+          v_remaining -= ((uint32_t)(v_counts[v_j]));
-+          if (v_remaining > 1073741824u) {
-+            return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+          }
-+          v_remaining <<= 1u;
-+          v_j += 1u;
-         }
--        uint8_t t_0 = *iop_a_src++;
--        v_block_size = t_0;
-+        if ((v_j <= 9u) || (15u < v_j)) {
-+          return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+        }
-+        v_j -= 9u;
-+        v_initial_high_bits = (((uint32_t)(1u)) << v_j);
-+        v_top = v_next_top;
-+        if ((v_top + (((uint32_t)(1u)) << v_j)) > 1024u) {
-+          return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+        }
-+        v_next_top = (v_top + (((uint32_t)(1u)) << v_j));
-+        v_redirect_key = (((uint32_t)(WUFFS_DEFLATE__REVERSE8[(v_redirect_key >> 1u)])) | ((v_redirect_key & 1u) << 8u));
-+        self->private_data.f_huffs[a_which][v_redirect_key] = (268435465u | (v_top << 8u) | (v_j << 4u));
-       }
--      if (v_block_size == 0u) {
--        status = wuffs_base__make_status(NULL);
--        goto ok;
-+    }
-+    if ((v_key >= 512u) || (v_counts[v_prev_cl] <= 0u)) {
-+      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+    }
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+    v_counts[v_prev_cl] -= 1u;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+    v_reversed_key = (((uint32_t)(WUFFS_DEFLATE__REVERSE8[(v_key >> 1u)])) | ((v_key & 1u) << 8u));
-+    v_reversed_key >>= (9u - v_cl);
-+    v_symbol = ((uint32_t)(v_symbols[v_i]));
-+    if (v_symbol == 256u) {
-+      v_value = (536870912u | v_cl);
-+    } else if ((v_symbol < 256u) && (a_which == 0u)) {
-+      v_value = (2147483648u | (v_symbol << 8u) | v_cl);
-+    } else if (v_symbol >= a_base_symbol) {
-+      v_symbol -= a_base_symbol;
-+      if (a_which == 0u) {
-+        v_value = (WUFFS_DEFLATE__LCODE_MAGIC_NUMBERS[(v_symbol & 31u)] | v_cl);
-+      } else {
-+        v_value = (WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[(v_symbol & 31u)] | v_cl);
-       }
--      self->private_data.s_skip_blocks[0].scratch = ((uint32_t)(v_block_size));
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--      if (self->private_data.s_skip_blocks[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--        self->private_data.s_skip_blocks[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--        iop_a_src = io2_a_src;
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
-+    } else {
-+      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+    }
-+    v_high_bits = v_initial_high_bits;
-+    v_delta = (((uint32_t)(1u)) << v_cl);
-+    while (v_high_bits >= v_delta) {
-+      v_high_bits -= v_delta;
-+      if ((v_top + ((v_high_bits | v_reversed_key) & 511u)) >= 1024u) {
-+        return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-       }
--      iop_a_src += self->private_data.s_skip_blocks[0].scratch;
-+      self->private_data.f_huffs[a_which][(v_top + ((v_high_bits | v_reversed_key) & 511u))] = v_value;
-+    }
-+    v_i += 1u;
-+    if (v_i >= v_n_symbols) {
-+      break;
-+    }
-+    v_code += 1u;
-+    if (v_code >= 32768u) {
-+      return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-     }
--
--    ok:
--    self->private_impl.p_skip_blocks[0] = 0;
--    goto exit;
--  }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_skip_blocks[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
--
--  return status;
-+  return wuffs_base__make_status(NULL);
- }
- 
--// -------- func gif.decoder.decode_ae
-+// ‼ WUFFS MULTI-FILE SECTION +x86_bmi2
-+// -------- func deflate.decoder.decode_huffman_bmi2
- 
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
-+WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("bmi2")
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_gif__decoder__decode_ae(
--    wuffs_gif__decoder* self,
-+wuffs_deflate__decoder__decode_huffman_bmi2(
-+    wuffs_deflate__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-     wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint8_t v_c = 0;
--  uint8_t v_block_size = 0;
--  bool v_is_animexts = false;
--  bool v_is_netscape = false;
--  bool v_is_iccp = false;
--  bool v_is_xmp = false;
-+  uint64_t v_bits = 0;
-+  uint32_t v_n_bits = 0;
-+  uint32_t v_table_entry = 0;
-+  uint32_t v_table_entry_n_bits = 0;
-+  uint64_t v_lmask = 0;
-+  uint64_t v_dmask = 0;
-+  uint32_t v_redir_top = 0;
-+  uint32_t v_redir_mask = 0;
-+  uint32_t v_length = 0;
-+  uint32_t v_dist_minus_1 = 0;
-+  uint32_t v_hlen = 0;
-+  uint32_t v_hdist = 0;
-+  uint32_t v_hdist_adjustment = 0;
- 
-+  uint8_t* iop_a_dst = NULL;
-+  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-+    }
-+  }
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -38283,214 +39652,206 @@ wuffs_gif__decoder__decode_ae(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_ae[0];
--  if (coro_susp_point) {
--    v_block_size = self->private_data.s_decode_ae[0].v_block_size;
--    v_is_animexts = self->private_data.s_decode_ae[0].v_is_animexts;
--    v_is_netscape = self->private_data.s_decode_ae[0].v_is_netscape;
--    v_is_iccp = self->private_data.s_decode_ae[0].v_is_iccp;
--    v_is_xmp = self->private_data.s_decode_ae[0].v_is_xmp;
-+  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
-+    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
-+    goto exit;
-   }
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    do {
--      if (self->private_impl.f_metadata_fourcc != 0u) {
--        status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
--        goto ok;
--      }
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
--        }
--        uint8_t t_0 = *iop_a_src++;
--        v_block_size = t_0;
--      }
--      if (v_block_size == 0u) {
--        status = wuffs_base__make_status(NULL);
--        goto ok;
--      }
--      if (v_block_size != 11u) {
--        self->private_data.s_decode_ae[0].scratch = ((uint32_t)(v_block_size));
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--        if (self->private_data.s_decode_ae[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--          self->private_data.s_decode_ae[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--          iop_a_src = io2_a_src;
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
--        }
--        iop_a_src += self->private_data.s_decode_ae[0].scratch;
-+  v_bits = ((uint64_t)(self->private_impl.f_bits));
-+  v_n_bits = self->private_impl.f_n_bits;
-+  v_lmask = ((((uint64_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u);
-+  v_dmask = ((((uint64_t)(1u)) << self->private_impl.f_n_huffs_bits[1u]) - 1u);
-+  if (self->private_impl.f_transformed_history_count < (a_dst ? a_dst->meta.pos : 0u)) {
-+    status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position);
-+    goto exit;
-+  }
-+  v_hdist_adjustment = ((uint32_t)((self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0u))));
-+  label__loop__continue:;
-+  while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 266u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 8u)) {
-+    v_bits |= ((uint64_t)(wuffs_base__peek_u64le__no_bounds_check(iop_a_src) << (v_n_bits & 63u)));
-+    iop_a_src += ((63u - (v_n_bits & 63u)) >> 3u);
-+    v_n_bits |= 56u;
-+    v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_lmask)];
-+    v_table_entry_n_bits = (v_table_entry & 15u);
-+    v_bits >>= v_table_entry_n_bits;
-+    v_n_bits -= v_table_entry_n_bits;
-+    if ((v_table_entry >> 31u) != 0u) {
-+      (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
-+      continue;
-+    } else if ((v_table_entry >> 30u) != 0u) {
-+    } else if ((v_table_entry >> 29u) != 0u) {
-+      self->private_impl.f_end_of_block = true;
-+      break;
-+    } else if ((v_table_entry >> 28u) != 0u) {
-+      v_redir_top = ((v_table_entry >> 8u) & 65535u);
-+      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
-+      v_table_entry = self->private_data.f_huffs[0u][((v_redir_top + (((uint32_t)(v_bits)) & v_redir_mask)) & 1023u)];
-+      v_table_entry_n_bits = (v_table_entry & 15u);
-+      v_bits >>= v_table_entry_n_bits;
-+      v_n_bits -= v_table_entry_n_bits;
-+      if ((v_table_entry >> 31u) != 0u) {
-+        (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
-+        continue;
-+      } else if ((v_table_entry >> 30u) != 0u) {
-+      } else if ((v_table_entry >> 29u) != 0u) {
-+        self->private_impl.f_end_of_block = true;
-         break;
-+      } else if ((v_table_entry >> 28u) != 0u) {
-+        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+        goto exit;
-+      } else if ((v_table_entry >> 27u) != 0u) {
-+        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
-+        goto exit;
-+      } else {
-+        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+        goto exit;
-       }
--      v_is_animexts = true;
--      v_is_netscape = true;
--      v_is_iccp = true;
--      v_is_xmp = true;
--      v_block_size = 0u;
--      while (v_block_size < 11u) {
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint8_t t_1 = *iop_a_src++;
--          v_c = t_1;
--        }
--        v_is_animexts = (v_is_animexts && (v_c == WUFFS_GIF__ANIMEXTS1DOT0[v_block_size]));
--        v_is_netscape = (v_is_netscape && (v_c == WUFFS_GIF__NETSCAPE2DOT0[v_block_size]));
--        v_is_iccp = (v_is_iccp && (v_c == WUFFS_GIF__ICCRGBG1012[v_block_size]));
--        v_is_xmp = (v_is_xmp && (v_c == WUFFS_GIF__XMPDATAXMP[v_block_size]));
--#if defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wconversion"
--#endif
--        v_block_size += 1u;
--#if defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
-+    } else if ((v_table_entry >> 27u) != 0u) {
-+      status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
-+      goto exit;
-+    } else {
-+      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+      goto exit;
-+    }
-+    v_length = (((v_table_entry >> 8u) & 255u) + 3u);
-+    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
-+    if (v_table_entry_n_bits > 0u) {
-+      v_length = (((v_length + 253u + ((uint32_t)(((v_bits) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 255u) + 3u);
-+      v_bits >>= v_table_entry_n_bits;
-+      v_n_bits -= v_table_entry_n_bits;
-+    }
-+    v_table_entry = self->private_data.f_huffs[1u][(v_bits & v_dmask)];
-+    v_table_entry_n_bits = (v_table_entry & 15u);
-+    v_bits >>= v_table_entry_n_bits;
-+    v_n_bits -= v_table_entry_n_bits;
-+    if ((v_table_entry >> 28u) == 1u) {
-+      v_redir_top = ((v_table_entry >> 8u) & 65535u);
-+      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
-+      v_table_entry = self->private_data.f_huffs[1u][((v_redir_top + (((uint32_t)(v_bits)) & v_redir_mask)) & 1023u)];
-+      v_table_entry_n_bits = (v_table_entry & 15u);
-+      v_bits >>= v_table_entry_n_bits;
-+      v_n_bits -= v_table_entry_n_bits;
-+    }
-+    if ((v_table_entry >> 24u) != 64u) {
-+      if ((v_table_entry >> 24u) == 8u) {
-+        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
-+        goto exit;
-       }
--      if (v_is_animexts || v_is_netscape) {
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint8_t t_2 = *iop_a_src++;
--          v_block_size = t_2;
--        }
--        if (v_block_size != 3u) {
--          self->private_data.s_decode_ae[0].scratch = ((uint32_t)(v_block_size));
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--          if (self->private_data.s_decode_ae[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--            self->private_data.s_decode_ae[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--            iop_a_src = io2_a_src;
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          iop_a_src += self->private_data.s_decode_ae[0].scratch;
--          break;
--        }
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint8_t t_3 = *iop_a_src++;
--          v_c = t_3;
-+      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+      goto exit;
-+    }
-+    v_dist_minus_1 = ((v_table_entry >> 8u) & 32767u);
-+    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
-+    v_dist_minus_1 = ((v_dist_minus_1 + ((uint32_t)(((v_bits) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 32767u);
-+    v_bits >>= v_table_entry_n_bits;
-+    v_n_bits -= v_table_entry_n_bits;
-+    do {
-+      if (((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
-+        v_hlen = 0u;
-+        v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1u))) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
-+        if (v_length > v_hdist) {
-+          v_length -= v_hdist;
-+          v_hlen = v_hdist;
-+        } else {
-+          v_hlen = v_length;
-+          v_length = 0u;
-         }
--        if (v_c != 1u) {
--          self->private_data.s_decode_ae[0].scratch = 2u;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
--          if (self->private_data.s_decode_ae[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--            self->private_data.s_decode_ae[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--            iop_a_src = io2_a_src;
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          iop_a_src += self->private_data.s_decode_ae[0].scratch;
--          break;
-+        v_hdist += v_hdist_adjustment;
-+        if (self->private_impl.f_history_index < v_hdist) {
-+          status = wuffs_base__make_status(wuffs_deflate__error__bad_distance);
-+          goto exit;
-         }
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
--          uint32_t t_4;
--          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--            t_4 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--            iop_a_src += 2;
--          } else {
--            self->private_data.s_decode_ae[0].scratch = 0;
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
--            while (true) {
--              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                goto suspend;
--              }
--              uint64_t* scratch = &self->private_data.s_decode_ae[0].scratch;
--              uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
--              *scratch <<= 8;
--              *scratch >>= 8;
--              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
--              if (num_bits_4 == 8) {
--                t_4 = ((uint32_t)(*scratch));
--                break;
--              }
--              num_bits_4 += 8u;
--              *scratch |= ((uint64_t)(num_bits_4)) << 56;
--            }
--          }
--          self->private_impl.f_num_animation_loops_value = t_4;
-+        wuffs_private_impl__io_writer__limited_copy_u32_from_slice(
-+            &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767u), 33025));
-+        if (v_length == 0u) {
-+          goto label__loop__continue;
-         }
--        self->private_impl.f_seen_num_animation_loops_value = true;
--        if ((0u < self->private_impl.f_num_animation_loops_value) && (self->private_impl.f_num_animation_loops_value <= 65535u)) {
--          self->private_impl.f_num_animation_loops_value += 1u;
-+        if ((((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) || (((uint64_t)(v_length)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_length + 8u))) > ((uint64_t)(io2_a_dst - iop_a_dst)))) {
-+          status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_distance);
-+          goto exit;
-         }
--      } else if (self->private_impl.f_call_sequence >= 32u) {
--      } else if (v_is_iccp && self->private_impl.f_report_metadata_iccp) {
--        self->private_impl.f_metadata_fourcc = 1229144912u;
--        self->private_impl.f_metadata_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
--        self->private_impl.f_call_sequence = 16u;
--        status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
--        goto ok;
--      } else if (v_is_xmp && self->private_impl.f_report_metadata_xmp) {
--        self->private_impl.f_metadata_fourcc = 1481461792u;
--        self->private_impl.f_metadata_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
--        self->private_impl.f_call_sequence = 16u;
--        status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
--        goto ok;
-+      }
-+      if ((v_dist_minus_1 + 1u) >= 8u) {
-+        wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast(
-+            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
-+      } else if ((v_dist_minus_1 + 1u) == 1u) {
-+        wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast(
-+            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
-+      } else {
-+        wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast(
-+            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
-       }
-     } while (0);
--    if (a_src) {
--      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--    }
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
--    status = wuffs_gif__decoder__skip_blocks(self, a_src);
--    if (a_src) {
--      iop_a_src = a_src->data.ptr + a_src->meta.ri;
--    }
--    if (status.repr) {
--      goto suspend;
-+  }
-+  if (v_n_bits > 63u) {
-+    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
-+    goto exit;
-+  }
-+  while (v_n_bits >= 8u) {
-+    v_n_bits -= 8u;
-+    if (iop_a_src > io1_a_src) {
-+      iop_a_src--;
-+    } else {
-+      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_i_o);
-+      goto exit;
-     }
--
--    ok:
--    self->private_impl.p_decode_ae[0] = 0;
-+  }
-+  self->private_impl.f_bits = ((uint32_t)((v_bits & ((((uint64_t)(1u)) << v_n_bits) - 1u))));
-+  self->private_impl.f_n_bits = v_n_bits;
-+  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> self->private_impl.f_n_bits) != 0u)) {
-+    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
-     goto exit;
-   }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_ae[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_decode_ae[0].v_block_size = v_block_size;
--  self->private_data.s_decode_ae[0].v_is_animexts = v_is_animexts;
--  self->private_data.s_decode_ae[0].v_is_netscape = v_is_netscape;
--  self->private_data.s_decode_ae[0].v_is_iccp = v_is_iccp;
--  self->private_data.s_decode_ae[0].v_is_xmp = v_is_xmp;
--
-   goto exit;
-   exit:
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+  }
-   if (a_src && a_src->data.ptr) {
-     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
- 
-   return status;
- }
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
-+// ‼ WUFFS MULTI-FILE SECTION -x86_bmi2
- 
--// -------- func gif.decoder.decode_gc
-+// -------- func deflate.decoder.decode_huffman_fast32
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_gif__decoder__decode_gc(
--    wuffs_gif__decoder* self,
-+wuffs_deflate__decoder__decode_huffman_fast32(
-+    wuffs_deflate__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-     wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint8_t v_c = 0;
--  uint8_t v_flags = 0;
--  uint16_t v_gc_duration_centiseconds = 0;
-+  uint32_t v_bits = 0;
-+  uint32_t v_n_bits = 0;
-+  uint32_t v_table_entry = 0;
-+  uint32_t v_table_entry_n_bits = 0;
-+  uint32_t v_lmask = 0;
-+  uint32_t v_dmask = 0;
-+  uint32_t v_redir_top = 0;
-+  uint32_t v_redir_mask = 0;
-+  uint32_t v_length = 0;
-+  uint32_t v_dist_minus_1 = 0;
-+  uint32_t v_hlen = 0;
-+  uint32_t v_hdist = 0;
-+  uint32_t v_hdist_adjustment = 0;
- 
-+  uint8_t* iop_a_dst = NULL;
-+  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-+    }
-+  }
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -38502,106 +39863,205 @@ wuffs_gif__decoder__decode_gc(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_gc[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_0 = *iop_a_src++;
--      v_c = t_0;
-+  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
-+    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
-+    goto exit;
-+  }
-+  v_bits = self->private_impl.f_bits;
-+  v_n_bits = self->private_impl.f_n_bits;
-+  v_lmask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u);
-+  v_dmask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[1u]) - 1u);
-+  if (self->private_impl.f_transformed_history_count < (a_dst ? a_dst->meta.pos : 0u)) {
-+    status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position);
-+    goto exit;
-+  }
-+  v_hdist_adjustment = ((uint32_t)((self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0u))));
-+  label__loop__continue:;
-+  while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 266u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 12u)) {
-+    if (v_n_bits < 15u) {
-+      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
-+      iop_a_src += 1u;
-+      v_n_bits += 8u;
-+      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
-+      iop_a_src += 1u;
-+      v_n_bits += 8u;
-+    } else {
-     }
--    if (v_c != 4u) {
--      status = wuffs_base__make_status(wuffs_gif__error__bad_graphic_control);
-+    v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_lmask)];
-+    v_table_entry_n_bits = (v_table_entry & 15u);
-+    v_bits >>= v_table_entry_n_bits;
-+    v_n_bits -= v_table_entry_n_bits;
-+    if ((v_table_entry >> 31u) != 0u) {
-+      (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
-+      continue;
-+    } else if ((v_table_entry >> 30u) != 0u) {
-+    } else if ((v_table_entry >> 29u) != 0u) {
-+      self->private_impl.f_end_of_block = true;
-+      break;
-+    } else if ((v_table_entry >> 28u) != 0u) {
-+      if (v_n_bits < 15u) {
-+        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
-+        iop_a_src += 1u;
-+        v_n_bits += 8u;
-+        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
-+        iop_a_src += 1u;
-+        v_n_bits += 8u;
-+      } else {
-+      }
-+      v_redir_top = ((v_table_entry >> 8u) & 65535u);
-+      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
-+      v_table_entry = self->private_data.f_huffs[0u][((v_redir_top + (v_bits & v_redir_mask)) & 1023u)];
-+      v_table_entry_n_bits = (v_table_entry & 15u);
-+      v_bits >>= v_table_entry_n_bits;
-+      v_n_bits -= v_table_entry_n_bits;
-+      if ((v_table_entry >> 31u) != 0u) {
-+        (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
-+        continue;
-+      } else if ((v_table_entry >> 30u) != 0u) {
-+      } else if ((v_table_entry >> 29u) != 0u) {
-+        self->private_impl.f_end_of_block = true;
-+        break;
-+      } else if ((v_table_entry >> 28u) != 0u) {
-+        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+        goto exit;
-+      } else if ((v_table_entry >> 27u) != 0u) {
-+        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
-+        goto exit;
-+      } else {
-+        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+        goto exit;
-+      }
-+    } else if ((v_table_entry >> 27u) != 0u) {
-+      status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
-+      goto exit;
-+    } else {
-+      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-       goto exit;
-     }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
-+    v_length = (((v_table_entry >> 8u) & 255u) + 3u);
-+    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
-+    if (v_table_entry_n_bits > 0u) {
-+      if (v_n_bits < 15u) {
-+        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
-+        iop_a_src += 1u;
-+        v_n_bits += 8u;
-+        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
-+        iop_a_src += 1u;
-+        v_n_bits += 8u;
-+      } else {
-       }
--      uint8_t t_1 = *iop_a_src++;
--      v_flags = t_1;
-+      v_length = (((v_length + 253u + ((v_bits) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 255u) + 3u);
-+      v_bits >>= v_table_entry_n_bits;
-+      v_n_bits -= v_table_entry_n_bits;
-+    } else {
-     }
--    self->private_impl.f_gc_has_transparent_index = ((v_flags & 1u) != 0u);
--    v_flags = ((v_flags >> 2u) & 7u);
--    if (v_flags == 2u) {
--      self->private_impl.f_gc_disposal = 1u;
--    } else if ((v_flags == 3u) || (v_flags == 4u)) {
--      self->private_impl.f_gc_disposal = 2u;
-+    if (v_n_bits < 15u) {
-+      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
-+      iop_a_src += 1u;
-+      v_n_bits += 8u;
-+      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
-+      iop_a_src += 1u;
-+      v_n_bits += 8u;
-     } else {
--      self->private_impl.f_gc_disposal = 0u;
-     }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--      uint16_t t_2;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--        t_2 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
--        iop_a_src += 2;
-+    v_table_entry = self->private_data.f_huffs[1u][(v_bits & v_dmask)];
-+    v_table_entry_n_bits = (v_table_entry & 15u);
-+    v_bits >>= v_table_entry_n_bits;
-+    v_n_bits -= v_table_entry_n_bits;
-+    if ((v_table_entry >> 28u) == 1u) {
-+      if (v_n_bits < 15u) {
-+        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
-+        iop_a_src += 1u;
-+        v_n_bits += 8u;
-+        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
-+        iop_a_src += 1u;
-+        v_n_bits += 8u;
-       } else {
--        self->private_data.s_decode_gc[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_decode_gc[0].scratch;
--          uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
--          *scratch <<= 8;
--          *scratch >>= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
--          if (num_bits_2 == 8) {
--            t_2 = ((uint16_t)(*scratch));
--            break;
--          }
--          num_bits_2 += 8u;
--          *scratch |= ((uint64_t)(num_bits_2)) << 56;
--        }
-       }
--      v_gc_duration_centiseconds = t_2;
-+      v_redir_top = ((v_table_entry >> 8u) & 65535u);
-+      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
-+      v_table_entry = self->private_data.f_huffs[1u][((v_redir_top + (v_bits & v_redir_mask)) & 1023u)];
-+      v_table_entry_n_bits = (v_table_entry & 15u);
-+      v_bits >>= v_table_entry_n_bits;
-+      v_n_bits -= v_table_entry_n_bits;
-+    } else {
-     }
--    self->private_impl.f_gc_duration = (((uint64_t)(v_gc_duration_centiseconds)) * 7056000u);
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
-+    if ((v_table_entry >> 24u) != 64u) {
-+      if ((v_table_entry >> 24u) == 8u) {
-+        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
-+        goto exit;
-       }
--      uint8_t t_3 = *iop_a_src++;
--      self->private_impl.f_gc_transparent_index = t_3;
-+      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+      goto exit;
-     }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_4 = *iop_a_src++;
--      v_c = t_4;
-+    v_dist_minus_1 = ((v_table_entry >> 8u) & 32767u);
-+    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
-+    if (v_n_bits < v_table_entry_n_bits) {
-+      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
-+      iop_a_src += 1u;
-+      v_n_bits += 8u;
-+      v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
-+      iop_a_src += 1u;
-+      v_n_bits += 8u;
-     }
--    if (v_c != 0u) {
--      status = wuffs_base__make_status(wuffs_gif__error__bad_graphic_control);
-+    v_dist_minus_1 = ((v_dist_minus_1 + ((v_bits) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 32767u);
-+    v_bits >>= v_table_entry_n_bits;
-+    v_n_bits -= v_table_entry_n_bits;
-+    do {
-+      if (((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
-+        v_hlen = 0u;
-+        v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1u))) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
-+        if (v_length > v_hdist) {
-+          v_length -= v_hdist;
-+          v_hlen = v_hdist;
-+        } else {
-+          v_hlen = v_length;
-+          v_length = 0u;
-+        }
-+        v_hdist += v_hdist_adjustment;
-+        if (self->private_impl.f_history_index < v_hdist) {
-+          status = wuffs_base__make_status(wuffs_deflate__error__bad_distance);
-+          goto exit;
-+        }
-+        wuffs_private_impl__io_writer__limited_copy_u32_from_slice(
-+            &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767u), 33025));
-+        if (v_length == 0u) {
-+          goto label__loop__continue;
-+        }
-+        if ((((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) || (((uint64_t)(v_length)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_length + 8u))) > ((uint64_t)(io2_a_dst - iop_a_dst)))) {
-+          status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_distance);
-+          goto exit;
-+        }
-+      }
-+      if ((v_dist_minus_1 + 1u) >= 8u) {
-+        wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast(
-+            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
-+      } else {
-+        wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast(
-+            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
-+      }
-+    } while (0);
-+  }
-+  while (v_n_bits >= 8u) {
-+    v_n_bits -= 8u;
-+    if (iop_a_src > io1_a_src) {
-+      iop_a_src--;
-+    } else {
-+      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_i_o);
-       goto exit;
-     }
--
--    goto ok;
--    ok:
--    self->private_impl.p_decode_gc[0] = 0;
-+  }
-+  self->private_impl.f_bits = (v_bits & ((((uint32_t)(1u)) << v_n_bits) - 1u));
-+  self->private_impl.f_n_bits = v_n_bits;
-+  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> self->private_impl.f_n_bits) != 0u)) {
-+    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
-     goto exit;
-   }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_gc[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--
-   goto exit;
-   exit:
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+  }
-   if (a_src && a_src->data.ptr) {
-     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
-@@ -38609,15 +40069,52 @@ wuffs_gif__decoder__decode_gc(
-   return status;
- }
- 
--// -------- func gif.decoder.decode_id_part0
-+// -------- func deflate.decoder.decode_huffman_fast64
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_gif__decoder__decode_id_part0(
--    wuffs_gif__decoder* self,
-+wuffs_deflate__decoder__decode_huffman_fast64(
-+    wuffs_deflate__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  return (*self->private_impl.choosy_decode_huffman_fast64)(self, a_dst, a_src);
-+}
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_deflate__decoder__decode_huffman_fast64__choosy_default(
-+    wuffs_deflate__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-     wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
-+  uint64_t v_bits = 0;
-+  uint32_t v_n_bits = 0;
-+  uint32_t v_table_entry = 0;
-+  uint32_t v_table_entry_n_bits = 0;
-+  uint64_t v_lmask = 0;
-+  uint64_t v_dmask = 0;
-+  uint32_t v_redir_top = 0;
-+  uint32_t v_redir_mask = 0;
-+  uint32_t v_length = 0;
-+  uint32_t v_dist_minus_1 = 0;
-+  uint32_t v_hlen = 0;
-+  uint32_t v_hdist = 0;
-+  uint32_t v_hdist_adjustment = 0;
-+
-+  uint8_t* iop_a_dst = NULL;
-+  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-+    }
-+  }
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -38629,147 +40126,160 @@ wuffs_gif__decoder__decode_id_part0(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_id_part0[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      uint32_t t_0;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--        t_0 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--        iop_a_src += 2;
-+  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
-+    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
-+    goto exit;
-+  }
-+  v_bits = ((uint64_t)(self->private_impl.f_bits));
-+  v_n_bits = self->private_impl.f_n_bits;
-+  v_lmask = ((((uint64_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u);
-+  v_dmask = ((((uint64_t)(1u)) << self->private_impl.f_n_huffs_bits[1u]) - 1u);
-+  if (self->private_impl.f_transformed_history_count < (a_dst ? a_dst->meta.pos : 0u)) {
-+    status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position);
-+    goto exit;
-+  }
-+  v_hdist_adjustment = ((uint32_t)((self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0u))));
-+  label__loop__continue:;
-+  while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 266u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 8u)) {
-+    v_bits |= ((uint64_t)(wuffs_base__peek_u64le__no_bounds_check(iop_a_src) << (v_n_bits & 63u)));
-+    iop_a_src += ((63u - (v_n_bits & 63u)) >> 3u);
-+    v_n_bits |= 56u;
-+    v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_lmask)];
-+    v_table_entry_n_bits = (v_table_entry & 15u);
-+    v_bits >>= v_table_entry_n_bits;
-+    v_n_bits -= v_table_entry_n_bits;
-+    if ((v_table_entry >> 31u) != 0u) {
-+      (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
-+      continue;
-+    } else if ((v_table_entry >> 30u) != 0u) {
-+    } else if ((v_table_entry >> 29u) != 0u) {
-+      self->private_impl.f_end_of_block = true;
-+      break;
-+    } else if ((v_table_entry >> 28u) != 0u) {
-+      v_redir_top = ((v_table_entry >> 8u) & 65535u);
-+      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
-+      v_table_entry = self->private_data.f_huffs[0u][((v_redir_top + (((uint32_t)(v_bits)) & v_redir_mask)) & 1023u)];
-+      v_table_entry_n_bits = (v_table_entry & 15u);
-+      v_bits >>= v_table_entry_n_bits;
-+      v_n_bits -= v_table_entry_n_bits;
-+      if ((v_table_entry >> 31u) != 0u) {
-+        (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)((v_table_entry >> 8u)))), iop_a_dst += 1);
-+        continue;
-+      } else if ((v_table_entry >> 30u) != 0u) {
-+      } else if ((v_table_entry >> 29u) != 0u) {
-+        self->private_impl.f_end_of_block = true;
-+        break;
-+      } else if ((v_table_entry >> 28u) != 0u) {
-+        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+        goto exit;
-+      } else if ((v_table_entry >> 27u) != 0u) {
-+        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
-+        goto exit;
-       } else {
--        self->private_data.s_decode_id_part0[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_decode_id_part0[0].scratch;
--          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
--          *scratch <<= 8;
--          *scratch >>= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
--          if (num_bits_0 == 8) {
--            t_0 = ((uint32_t)(*scratch));
--            break;
--          }
--          num_bits_0 += 8u;
--          *scratch |= ((uint64_t)(num_bits_0)) << 56;
--        }
-+        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+        goto exit;
-       }
--      self->private_impl.f_frame_rect_x0 = t_0;
-+    } else if ((v_table_entry >> 27u) != 0u) {
-+      status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
-+      goto exit;
-+    } else {
-+      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+      goto exit;
-     }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--      uint32_t t_1;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--        t_1 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--        iop_a_src += 2;
--      } else {
--        self->private_data.s_decode_id_part0[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_decode_id_part0[0].scratch;
--          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
--          *scratch <<= 8;
--          *scratch >>= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
--          if (num_bits_1 == 8) {
--            t_1 = ((uint32_t)(*scratch));
--            break;
--          }
--          num_bits_1 += 8u;
--          *scratch |= ((uint64_t)(num_bits_1)) << 56;
--        }
--      }
--      self->private_impl.f_frame_rect_y0 = t_1;
-+    v_length = (((v_table_entry >> 8u) & 255u) + 3u);
-+    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
-+    if (v_table_entry_n_bits > 0u) {
-+      v_length = (((v_length + 253u + ((uint32_t)(((v_bits) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 255u) + 3u);
-+      v_bits >>= v_table_entry_n_bits;
-+      v_n_bits -= v_table_entry_n_bits;
-     }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--      uint32_t t_2;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--        t_2 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--        iop_a_src += 2;
--      } else {
--        self->private_data.s_decode_id_part0[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_decode_id_part0[0].scratch;
--          uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
--          *scratch <<= 8;
--          *scratch >>= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
--          if (num_bits_2 == 8) {
--            t_2 = ((uint32_t)(*scratch));
--            break;
--          }
--          num_bits_2 += 8u;
--          *scratch |= ((uint64_t)(num_bits_2)) << 56;
--        }
-+    v_table_entry = self->private_data.f_huffs[1u][(v_bits & v_dmask)];
-+    v_table_entry_n_bits = (v_table_entry & 15u);
-+    v_bits >>= v_table_entry_n_bits;
-+    v_n_bits -= v_table_entry_n_bits;
-+    if ((v_table_entry >> 28u) == 1u) {
-+      v_redir_top = ((v_table_entry >> 8u) & 65535u);
-+      v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
-+      v_table_entry = self->private_data.f_huffs[1u][((v_redir_top + (((uint32_t)(v_bits)) & v_redir_mask)) & 1023u)];
-+      v_table_entry_n_bits = (v_table_entry & 15u);
-+      v_bits >>= v_table_entry_n_bits;
-+      v_n_bits -= v_table_entry_n_bits;
-+    }
-+    if ((v_table_entry >> 24u) != 64u) {
-+      if ((v_table_entry >> 24u) == 8u) {
-+        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
-+        goto exit;
-       }
--      self->private_impl.f_frame_rect_x1 = t_2;
-+      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+      goto exit;
-     }
--    self->private_impl.f_frame_rect_x1 += self->private_impl.f_frame_rect_x0;
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
--      uint32_t t_3;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--        t_3 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--        iop_a_src += 2;
--      } else {
--        self->private_data.s_decode_id_part0[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_decode_id_part0[0].scratch;
--          uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
--          *scratch <<= 8;
--          *scratch >>= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
--          if (num_bits_3 == 8) {
--            t_3 = ((uint32_t)(*scratch));
--            break;
--          }
--          num_bits_3 += 8u;
--          *scratch |= ((uint64_t)(num_bits_3)) << 56;
-+    v_dist_minus_1 = ((v_table_entry >> 8u) & 32767u);
-+    v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
-+    v_dist_minus_1 = ((v_dist_minus_1 + ((uint32_t)(((v_bits) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 32767u);
-+    v_bits >>= v_table_entry_n_bits;
-+    v_n_bits -= v_table_entry_n_bits;
-+    do {
-+      if (((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
-+        v_hlen = 0u;
-+        v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1u))) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
-+        if (v_length > v_hdist) {
-+          v_length -= v_hdist;
-+          v_hlen = v_hdist;
-+        } else {
-+          v_hlen = v_length;
-+          v_length = 0u;
-+        }
-+        v_hdist += v_hdist_adjustment;
-+        if (self->private_impl.f_history_index < v_hdist) {
-+          status = wuffs_base__make_status(wuffs_deflate__error__bad_distance);
-+          goto exit;
-+        }
-+        wuffs_private_impl__io_writer__limited_copy_u32_from_slice(
-+            &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767u), 33025));
-+        if (v_length == 0u) {
-+          goto label__loop__continue;
-+        }
-+        if ((((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) || (((uint64_t)(v_length)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_length + 8u))) > ((uint64_t)(io2_a_dst - iop_a_dst)))) {
-+          status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_distance);
-+          goto exit;
-         }
-       }
--      self->private_impl.f_frame_rect_y1 = t_3;
--    }
--    self->private_impl.f_frame_rect_y1 += self->private_impl.f_frame_rect_y0;
--    self->private_impl.f_dst_x = self->private_impl.f_frame_rect_x0;
--    self->private_impl.f_dst_y = self->private_impl.f_frame_rect_y0;
--    if ((self->private_impl.f_num_decoded_frame_configs_value == 0u) &&  ! self->private_impl.f_quirks[4u]) {
--      self->private_impl.f_width = wuffs_base__u32__max(self->private_impl.f_width, self->private_impl.f_frame_rect_x1);
--      self->private_impl.f_height = wuffs_base__u32__max(self->private_impl.f_height, self->private_impl.f_frame_rect_y1);
-+      if ((v_dist_minus_1 + 1u) >= 8u) {
-+        wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast(
-+            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
-+      } else if ((v_dist_minus_1 + 1u) == 1u) {
-+        wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast(
-+            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
-+      } else {
-+        wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast(
-+            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
-+      }
-+    } while (0);
-+  }
-+  if (v_n_bits > 63u) {
-+    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
-+    goto exit;
-+  }
-+  while (v_n_bits >= 8u) {
-+    v_n_bits -= 8u;
-+    if (iop_a_src > io1_a_src) {
-+      iop_a_src--;
-+    } else {
-+      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_i_o);
-+      goto exit;
-     }
--
--    goto ok;
--    ok:
--    self->private_impl.p_decode_id_part0[0] = 0;
-+  }
-+  self->private_impl.f_bits = ((uint32_t)((v_bits & ((((uint64_t)(1u)) << v_n_bits) - 1u))));
-+  self->private_impl.f_n_bits = v_n_bits;
-+  if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> self->private_impl.f_n_bits) != 0u)) {
-+    status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
-     goto exit;
-   }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_id_part0[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--
-   goto exit;
-   exit:
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+  }
-   if (a_src && a_src->data.ptr) {
-     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
-@@ -38777,25 +40287,49 @@ wuffs_gif__decoder__decode_id_part0(
-   return status;
- }
- 
--// -------- func gif.decoder.decode_id_part1
-+// -------- func deflate.decoder.decode_huffman_slow
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_gif__decoder__decode_id_part1(
--    wuffs_gif__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend) {
-+wuffs_deflate__decoder__decode_huffman_slow(
-+    wuffs_deflate__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint8_t v_flags = 0;
--  uint8_t v_which_palette = 0;
--  uint32_t v_num_palette_entries = 0;
--  uint32_t v_i = 0;
--  uint32_t v_argb = 0;
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
--  uint8_t v_lw = 0;
-+  uint32_t v_bits = 0;
-+  uint32_t v_n_bits = 0;
-+  uint32_t v_table_entry = 0;
-+  uint32_t v_table_entry_n_bits = 0;
-+  uint32_t v_lmask = 0;
-+  uint32_t v_dmask = 0;
-+  uint32_t v_b0 = 0;
-+  uint32_t v_redir_top = 0;
-+  uint32_t v_redir_mask = 0;
-+  uint32_t v_b1 = 0;
-+  uint32_t v_length = 0;
-+  uint32_t v_b2 = 0;
-+  uint32_t v_b3 = 0;
-+  uint32_t v_b4 = 0;
-+  uint32_t v_dist_minus_1 = 0;
-+  uint32_t v_b5 = 0;
-+  uint32_t v_n_copied = 0;
-+  uint32_t v_hlen = 0;
-+  uint32_t v_hdist = 0;
- 
-+  uint8_t* iop_a_dst = NULL;
-+  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-+    }
-+  }
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -38807,139 +40341,275 @@ wuffs_gif__decoder__decode_id_part1(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_id_part1[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_huffman_slow;
-   if (coro_susp_point) {
--    v_which_palette = self->private_data.s_decode_id_part1[0].v_which_palette;
--    v_num_palette_entries = self->private_data.s_decode_id_part1[0].v_num_palette_entries;
--    v_i = self->private_data.s_decode_id_part1[0].v_i;
-+    v_bits = self->private_data.s_decode_huffman_slow.v_bits;
-+    v_n_bits = self->private_data.s_decode_huffman_slow.v_n_bits;
-+    v_table_entry_n_bits = self->private_data.s_decode_huffman_slow.v_table_entry_n_bits;
-+    v_lmask = self->private_data.s_decode_huffman_slow.v_lmask;
-+    v_dmask = self->private_data.s_decode_huffman_slow.v_dmask;
-+    v_redir_top = self->private_data.s_decode_huffman_slow.v_redir_top;
-+    v_redir_mask = self->private_data.s_decode_huffman_slow.v_redir_mask;
-+    v_length = self->private_data.s_decode_huffman_slow.v_length;
-+    v_dist_minus_1 = self->private_data.s_decode_huffman_slow.v_dist_minus_1;
-   }
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_0 = *iop_a_src++;
--      v_flags = t_0;
--    }
--    if ((v_flags & 64u) != 0u) {
--      self->private_impl.f_interlace = 4u;
--    } else {
--      self->private_impl.f_interlace = 0u;
-+    if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
-+      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
-+      goto exit;
-     }
--    v_which_palette = 1u;
--    if ((v_flags & 128u) != 0u) {
--      v_num_palette_entries = (((uint32_t)(1u)) << (1u + (v_flags & 7u)));
--      v_i = 0u;
--      while (v_i < v_num_palette_entries) {
-+    v_bits = self->private_impl.f_bits;
-+    v_n_bits = self->private_impl.f_n_bits;
-+    v_lmask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[0u]) - 1u);
-+    v_dmask = ((((uint32_t)(1u)) << self->private_impl.f_n_huffs_bits[1u]) - 1u);
-+    label__loop__continue:;
-+    while ( ! (self->private_impl.p_decode_huffman_slow != 0)) {
-+      while (true) {
-+        v_table_entry = self->private_data.f_huffs[0u][(v_bits & v_lmask)];
-+        v_table_entry_n_bits = (v_table_entry & 15u);
-+        if (v_n_bits >= v_table_entry_n_bits) {
-+          v_bits >>= v_table_entry_n_bits;
-+          v_n_bits -= v_table_entry_n_bits;
-+          break;
-+        }
-         {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--          uint32_t t_1;
--          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
--            t_1 = ((uint32_t)(wuffs_base__peek_u24be__no_bounds_check(iop_a_src)));
--            iop_a_src += 3;
--          } else {
--            self->private_data.s_decode_id_part1[0].scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint32_t t_0 = *iop_a_src++;
-+          v_b0 = t_0;
-+        }
-+        v_bits |= (v_b0 << v_n_bits);
-+        v_n_bits += 8u;
-+      }
-+      if ((v_table_entry >> 31u) != 0u) {
-+        self->private_data.s_decode_huffman_slow.scratch = ((uint8_t)((v_table_entry >> 8u)));
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+        if (iop_a_dst == io2_a_dst) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+          goto suspend;
-+        }
-+        *iop_a_dst++ = ((uint8_t)(self->private_data.s_decode_huffman_slow.scratch));
-+        continue;
-+      } else if ((v_table_entry >> 30u) != 0u) {
-+      } else if ((v_table_entry >> 29u) != 0u) {
-+        self->private_impl.f_end_of_block = true;
-+        break;
-+      } else if ((v_table_entry >> 28u) != 0u) {
-+        v_redir_top = ((v_table_entry >> 8u) & 65535u);
-+        v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
-+        while (true) {
-+          v_table_entry = self->private_data.f_huffs[0u][((v_redir_top + (v_bits & v_redir_mask)) & 1023u)];
-+          v_table_entry_n_bits = (v_table_entry & 15u);
-+          if (v_n_bits >= v_table_entry_n_bits) {
-+            v_bits >>= v_table_entry_n_bits;
-+            v_n_bits -= v_table_entry_n_bits;
-+            break;
-+          }
-+          {
-             WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--            while (true) {
--              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                goto suspend;
--              }
--              uint64_t* scratch = &self->private_data.s_decode_id_part1[0].scratch;
--              uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
--              *scratch >>= 8;
--              *scratch <<= 8;
--              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
--              if (num_bits_1 == 16) {
--                t_1 = ((uint32_t)(*scratch >> 40));
--                break;
--              }
--              num_bits_1 += 8u;
--              *scratch |= ((uint64_t)(num_bits_1));
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-             }
-+            uint32_t t_1 = *iop_a_src++;
-+            v_b1 = t_1;
-           }
--          v_argb = t_1;
-+          v_bits |= (v_b1 << v_n_bits);
-+          v_n_bits += 8u;
-         }
--        v_argb |= 4278190080u;
--        self->private_data.f_palettes[1u][((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u)));
--        self->private_data.f_palettes[1u][((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u)));
--        self->private_data.f_palettes[1u][((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u)));
--        self->private_data.f_palettes[1u][((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u)));
--        v_i += 1u;
-+        if ((v_table_entry >> 31u) != 0u) {
-+          self->private_data.s_decode_huffman_slow.scratch = ((uint8_t)((v_table_entry >> 8u)));
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+          if (iop_a_dst == io2_a_dst) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+            goto suspend;
-+          }
-+          *iop_a_dst++ = ((uint8_t)(self->private_data.s_decode_huffman_slow.scratch));
-+          continue;
-+        } else if ((v_table_entry >> 30u) != 0u) {
-+        } else if ((v_table_entry >> 29u) != 0u) {
-+          self->private_impl.f_end_of_block = true;
-+          break;
-+        } else if ((v_table_entry >> 28u) != 0u) {
-+          status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+          goto exit;
-+        } else if ((v_table_entry >> 27u) != 0u) {
-+          status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
-+          goto exit;
-+        } else {
-+          status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+          goto exit;
-+        }
-+      } else if ((v_table_entry >> 27u) != 0u) {
-+        status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
-+        goto exit;
-+      } else {
-+        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-+        goto exit;
-       }
--      while (v_i < 256u) {
--        self->private_data.f_palettes[1u][((4u * v_i) + 0u)] = 0u;
--        self->private_data.f_palettes[1u][((4u * v_i) + 1u)] = 0u;
--        self->private_data.f_palettes[1u][((4u * v_i) + 2u)] = 0u;
--        self->private_data.f_palettes[1u][((4u * v_i) + 3u)] = 255u;
--        v_i += 1u;
-+      v_length = (((v_table_entry >> 8u) & 255u) + 3u);
-+      v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
-+      if (v_table_entry_n_bits > 0u) {
-+        while (v_n_bits < v_table_entry_n_bits) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint32_t t_2 = *iop_a_src++;
-+            v_b2 = t_2;
-+          }
-+          v_bits |= (v_b2 << v_n_bits);
-+          v_n_bits += 8u;
-+        }
-+        v_length = (((v_length + 253u + ((v_bits) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 255u) + 3u);
-+        v_bits >>= v_table_entry_n_bits;
-+        v_n_bits -= v_table_entry_n_bits;
-       }
--    } else if (self->private_impl.f_quirks[6u] &&  ! self->private_impl.f_has_global_palette) {
--      status = wuffs_base__make_status(wuffs_gif__error__bad_palette);
--      goto exit;
--    } else if (self->private_impl.f_gc_has_transparent_index) {
--      wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_palettes[1u], 1024), wuffs_base__make_slice_u8(self->private_data.f_palettes[0u], 1024));
--    } else {
--      v_which_palette = 0u;
--    }
--    if (self->private_impl.f_gc_has_transparent_index) {
--      self->private_data.f_palettes[1u][((4u * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 0u)] = 0u;
--      self->private_data.f_palettes[1u][((4u * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 1u)] = 0u;
--      self->private_data.f_palettes[1u][((4u * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 2u)] = 0u;
--      self->private_data.f_palettes[1u][((4u * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 3u)] = 0u;
--    }
--    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
--        wuffs_base__pixel_buffer__pixel_format(a_dst),
--        wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
--        wuffs_base__utility__make_pixel_format(2198077448u),
--        wuffs_base__make_slice_u8(self->private_data.f_palettes[v_which_palette], 1024),
--        a_blend);
--    if ( ! wuffs_base__status__is_ok(&v_status)) {
--      status = v_status;
--      if (wuffs_base__status__is_error(&status)) {
--        goto exit;
--      } else if (wuffs_base__status__is_suspension(&status)) {
--        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+      while (true) {
-+        v_table_entry = self->private_data.f_huffs[1u][(v_bits & v_dmask)];
-+        v_table_entry_n_bits = (v_table_entry & 15u);
-+        if (v_n_bits >= v_table_entry_n_bits) {
-+          v_bits >>= v_table_entry_n_bits;
-+          v_n_bits -= v_table_entry_n_bits;
-+          break;
-+        }
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint32_t t_3 = *iop_a_src++;
-+          v_b3 = t_3;
-+        }
-+        v_bits |= (v_b3 << v_n_bits);
-+        v_n_bits += 8u;
-+      }
-+      if ((v_table_entry >> 28u) == 1u) {
-+        v_redir_top = ((v_table_entry >> 8u) & 65535u);
-+        v_redir_mask = ((((uint32_t)(1u)) << ((v_table_entry >> 4u) & 15u)) - 1u);
-+        while (true) {
-+          v_table_entry = self->private_data.f_huffs[1u][((v_redir_top + (v_bits & v_redir_mask)) & 1023u)];
-+          v_table_entry_n_bits = (v_table_entry & 15u);
-+          if (v_n_bits >= v_table_entry_n_bits) {
-+            v_bits >>= v_table_entry_n_bits;
-+            v_n_bits -= v_table_entry_n_bits;
-+            break;
-+          }
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint32_t t_4 = *iop_a_src++;
-+            v_b4 = t_4;
-+          }
-+          v_bits |= (v_b4 << v_n_bits);
-+          v_n_bits += 8u;
-+        }
-+      }
-+      if ((v_table_entry >> 24u) != 64u) {
-+        if ((v_table_entry >> 24u) == 8u) {
-+          status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
-+          goto exit;
-+        }
-+        status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
-         goto exit;
-       }
--      goto ok;
--    }
--    if (self->private_impl.f_ignored_but_affects_benchmarks) {
--    }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
-+      v_dist_minus_1 = ((v_table_entry >> 8u) & 32767u);
-+      v_table_entry_n_bits = ((v_table_entry >> 4u) & 15u);
-+      if (v_table_entry_n_bits > 0u) {
-+        while (v_n_bits < v_table_entry_n_bits) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint32_t t_5 = *iop_a_src++;
-+            v_b5 = t_5;
-+          }
-+          v_bits |= (v_b5 << v_n_bits);
-+          v_n_bits += 8u;
-+        }
-+        v_dist_minus_1 = ((v_dist_minus_1 + ((v_bits) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 32767u);
-+        v_bits >>= v_table_entry_n_bits;
-+        v_n_bits -= v_table_entry_n_bits;
-+      }
-+      while (true) {
-+        if (((uint64_t)((v_dist_minus_1 + 1u))) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
-+          v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1u))) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
-+          if (v_hdist < v_length) {
-+            v_hlen = v_hdist;
-+          } else {
-+            v_hlen = v_length;
-+          }
-+          v_hdist += ((uint32_t)(((uint64_t)(self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0u)))));
-+          if (self->private_impl.f_history_index < v_hdist) {
-+            status = wuffs_base__make_status(wuffs_deflate__error__bad_distance);
-+            goto exit;
-+          }
-+          v_n_copied = wuffs_private_impl__io_writer__limited_copy_u32_from_slice(
-+              &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767u), 33025));
-+          if (v_n_copied < v_hlen) {
-+            v_length -= v_n_copied;
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
-+            continue;
-+          }
-+          v_length -= v_hlen;
-+          if (v_length == 0u) {
-+            goto label__loop__continue;
-+          }
-+        }
-+        v_n_copied = wuffs_private_impl__io_writer__limited_copy_u32_from_history(
-+            &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1u));
-+        if (v_length <= v_n_copied) {
-+          goto label__loop__continue;
-+        }
-+        v_length -= v_n_copied;
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
-       }
--      uint8_t t_2 = *iop_a_src++;
--      v_lw = t_2;
-     }
--    if (v_lw > 8u) {
--      status = wuffs_base__make_status(wuffs_gif__error__bad_literal_width);
-+    self->private_impl.f_bits = v_bits;
-+    self->private_impl.f_n_bits = v_n_bits;
-+    if ((self->private_impl.f_n_bits >= 8u) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7u)) != 0u)) {
-+      status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
-       goto exit;
-     }
--    self->private_impl.f_lzw_pending_literal_width_plus_one = ((uint32_t)((1u + v_lw)));
--    self->private_impl.f_ignored_but_affects_benchmarks = true;
- 
-     ok:
--    self->private_impl.p_decode_id_part1[0] = 0;
-+    self->private_impl.p_decode_huffman_slow = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_id_part1[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_decode_id_part1[0].v_which_palette = v_which_palette;
--  self->private_data.s_decode_id_part1[0].v_num_palette_entries = v_num_palette_entries;
--  self->private_data.s_decode_id_part1[0].v_i = v_i;
-+  self->private_impl.p_decode_huffman_slow = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_huffman_slow.v_bits = v_bits;
-+  self->private_data.s_decode_huffman_slow.v_n_bits = v_n_bits;
-+  self->private_data.s_decode_huffman_slow.v_table_entry_n_bits = v_table_entry_n_bits;
-+  self->private_data.s_decode_huffman_slow.v_lmask = v_lmask;
-+  self->private_data.s_decode_huffman_slow.v_dmask = v_dmask;
-+  self->private_data.s_decode_huffman_slow.v_redir_top = v_redir_top;
-+  self->private_data.s_decode_huffman_slow.v_redir_mask = v_redir_mask;
-+  self->private_data.s_decode_huffman_slow.v_length = v_length;
-+  self->private_data.s_decode_huffman_slow.v_dist_minus_1 = v_dist_minus_1;
- 
-   goto exit;
-   exit:
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+  }
-   if (a_src && a_src->data.ptr) {
-     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
-@@ -38947,782 +40617,538 @@ wuffs_gif__decoder__decode_id_part1(
-   return status;
- }
- 
--// -------- func gif.decoder.decode_id_part2
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__DEFLATE)
-+
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GIF)
-+
-+// ---------------- Status Codes Implementations
-+
-+const char wuffs_gif__error__bad_lzw_code[] = "#gif: bad LZW code";
-+const char wuffs_gif__error__bad_extension_label[] = "#gif: bad extension label";
-+const char wuffs_gif__error__bad_frame_size[] = "#gif: bad frame size";
-+const char wuffs_gif__error__bad_graphic_control[] = "#gif: bad graphic control";
-+const char wuffs_gif__error__bad_header[] = "#gif: bad header";
-+const char wuffs_gif__error__bad_literal_width[] = "#gif: bad literal width";
-+const char wuffs_gif__error__bad_palette[] = "#gif: bad palette";
-+const char wuffs_gif__error__truncated_input[] = "#gif: truncated input";
-+const char wuffs_gif__error__internal_error_inconsistent_i_o[] = "#gif: internal error: inconsistent I/O";
-+
-+// ---------------- Private Consts
-+
-+static const uint32_t
-+WUFFS_GIF__INTERLACE_START[5] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  4294967295u, 1u, 2u, 4u, 0u,
-+};
-+
-+static const uint8_t
-+WUFFS_GIF__INTERLACE_DELTA[5] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  1u, 2u, 4u, 8u, 8u,
-+};
-+
-+static const uint8_t
-+WUFFS_GIF__INTERLACE_COUNT[5] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 1u, 2u, 4u, 8u,
-+};
-+
-+static const uint8_t
-+WUFFS_GIF__ANIMEXTS1DOT0[11] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  65u, 78u, 73u, 77u, 69u, 88u, 84u, 83u,
-+  49u, 46u, 48u,
-+};
-+
-+static const uint8_t
-+WUFFS_GIF__NETSCAPE2DOT0[11] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  78u, 69u, 84u, 83u, 67u, 65u, 80u, 69u,
-+  50u, 46u, 48u,
-+};
-+
-+static const uint8_t
-+WUFFS_GIF__ICCRGBG1012[11] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  73u, 67u, 67u, 82u, 71u, 66u, 71u, 49u,
-+  48u, 49u, 50u,
-+};
-+
-+static const uint8_t
-+WUFFS_GIF__XMPDATAXMP[11] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  88u, 77u, 80u, 32u, 68u, 97u, 116u, 97u,
-+  88u, 77u, 80u,
-+};
-+
-+#define WUFFS_GIF__QUIRKS_BASE 1041635328u
-+
-+#define WUFFS_GIF__QUIRKS_COUNT 7u
-+
-+// ---------------- Private Initializer Prototypes
-+
-+// ---------------- Private Function Prototypes
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_gif__decoder__decode_id_part2(
-+wuffs_gif__decoder__do_decode_image_config(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_gif__decoder__do_tell_me_more(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__more_information* a_minfo,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_gif__decoder__do_decode_frame_config(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_gif__decoder__skip_frame(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_gif__decoder__do_decode_frame(
-     wuffs_gif__decoder* self,
-     wuffs_base__pixel_buffer* a_dst,
-     wuffs_base__io_buffer* a_src,
--    wuffs_base__slice_u8 a_workbuf) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  uint64_t v_block_size = 0;
--  bool v_need_block_size = false;
--  uint32_t v_n_copied = 0;
--  uint64_t v_n_compressed = 0;
--  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
--  wuffs_base__io_buffer* v_r = &u_r;
--  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint64_t v_mark = 0;
--  wuffs_base__status v_copy_status = wuffs_base__make_status(NULL);
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts);
- 
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_gif__decoder__reset_gc(
-+    wuffs_gif__decoder* self);
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_id_part2[0];
--  if (coro_susp_point) {
--    v_block_size = self->private_data.s_decode_id_part2[0].v_block_size;
--    v_need_block_size = self->private_data.s_decode_id_part2[0].v_need_block_size;
--  }
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_gif__decoder__decode_up_to_id_part1(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__io_buffer* a_src);
- 
--    wuffs_gif__decoder__lzw_init(self);
--    v_need_block_size = true;
--    label__outer__continue:;
--    while (true) {
--      if (v_need_block_size) {
--        v_need_block_size = false;
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t t_0 = *iop_a_src++;
--          v_block_size = t_0;
--        }
--      }
--      if (v_block_size == 0u) {
--        break;
--      }
--      while (((uint64_t)(io2_a_src - iop_a_src)) == 0u) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
--      }
--      if (self->private_impl.f_compressed_ri == self->private_impl.f_compressed_wi) {
--        self->private_impl.f_compressed_ri = 0u;
--        self->private_impl.f_compressed_wi = 0u;
--      }
--      while (self->private_impl.f_compressed_wi <= 3841u) {
--        v_n_compressed = wuffs_base__u64__min(v_block_size, ((uint64_t)(io2_a_src - iop_a_src)));
--        if (v_n_compressed <= 0u) {
--          break;
--        }
--        v_n_copied = wuffs_base__io_reader__limited_copy_u32_to_slice(
--            &iop_a_src, io2_a_src,((uint32_t)(v_n_compressed)), wuffs_base__make_slice_u8_ij(self->private_data.f_compressed, self->private_impl.f_compressed_wi, 4096));
--        wuffs_base__u64__sat_add_indirect(&self->private_impl.f_compressed_wi, ((uint64_t)(v_n_copied)));
--        wuffs_base__u64__sat_sub_indirect(&v_block_size, ((uint64_t)(v_n_copied)));
--        if (v_block_size > 0u) {
--          break;
--        }
--        if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--          v_need_block_size = true;
--          break;
--        }
--        v_block_size = ((uint64_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src)));
--        iop_a_src += 1u;
--      }
--      while (true) {
--        if ((self->private_impl.f_compressed_ri > self->private_impl.f_compressed_wi) || (self->private_impl.f_compressed_wi > 4096u)) {
--          status = wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_i_o);
--          goto exit;
--        }
--        {
--          wuffs_base__io_buffer* o_0_v_r = v_r;
--          const uint8_t *o_0_iop_v_r = iop_v_r;
--          const uint8_t *o_0_io0_v_r = io0_v_r;
--          const uint8_t *o_0_io1_v_r = io1_v_r;
--          const uint8_t *o_0_io2_v_r = io2_v_r;
--          v_r = wuffs_base__io_reader__set(
--              &u_r,
--              &iop_v_r,
--              &io0_v_r,
--              &io1_v_r,
--              &io2_v_r,
--              wuffs_base__make_slice_u8_ij(self->private_data.f_compressed,
--              self->private_impl.f_compressed_ri,
--              self->private_impl.f_compressed_wi),
--              0u);
--          v_mark = ((uint64_t)(iop_v_r - io0_v_r));
--          u_r.meta.ri = ((size_t)(iop_v_r - u_r.data.ptr));
--          wuffs_gif__decoder__lzw_read_from(self, v_r);
--          iop_v_r = u_r.data.ptr + u_r.meta.ri;
--          wuffs_base__u64__sat_add_indirect(&self->private_impl.f_compressed_ri, wuffs_base__io__count_since(v_mark, ((uint64_t)(iop_v_r - io0_v_r))));
--          v_r = o_0_v_r;
--          iop_v_r = o_0_iop_v_r;
--          io0_v_r = o_0_io0_v_r;
--          io1_v_r = o_0_io1_v_r;
--          io2_v_r = o_0_io2_v_r;
--        }
--        if (self->private_impl.f_lzw_output_ri < self->private_impl.f_lzw_output_wi) {
--          v_copy_status = wuffs_gif__decoder__copy_to_image_buffer(self, a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_lzw_output,
--              self->private_impl.f_lzw_output_ri,
--              self->private_impl.f_lzw_output_wi));
--          if (wuffs_base__status__is_error(&v_copy_status)) {
--            status = v_copy_status;
--            goto exit;
--          }
--          self->private_impl.f_lzw_output_ri = 0u;
--          self->private_impl.f_lzw_output_wi = 0u;
--        }
--        if (self->private_impl.f_lzw_read_from_return_value == 0u) {
--          self->private_impl.f_ignored_but_affects_benchmarks = false;
--          if (v_need_block_size || (v_block_size > 0u)) {
--            self->private_data.s_decode_id_part2[0].scratch = ((uint32_t)(v_block_size));
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--            if (self->private_data.s_decode_id_part2[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--              self->private_data.s_decode_id_part2[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--              iop_a_src = io2_a_src;
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            iop_a_src += self->private_data.s_decode_id_part2[0].scratch;
--            if (a_src) {
--              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--            }
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--            status = wuffs_gif__decoder__skip_blocks(self, a_src);
--            if (a_src) {
--              iop_a_src = a_src->data.ptr + a_src->meta.ri;
--            }
--            if (status.repr) {
--              goto suspend;
--            }
--          }
--          goto label__outer__break;
--        } else if (self->private_impl.f_lzw_read_from_return_value == 1u) {
--          continue;
--        } else if (self->private_impl.f_lzw_read_from_return_value == 2u) {
--          goto label__outer__continue;
--        } else if (self->private_impl.f_quirks[3u] && (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1) && (self->private_impl.f_interlace == 0u)) {
--          if (v_need_block_size || (v_block_size > 0u)) {
--            self->private_data.s_decode_id_part2[0].scratch = ((uint32_t)(v_block_size));
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--            if (self->private_data.s_decode_id_part2[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--              self->private_data.s_decode_id_part2[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--              iop_a_src = io2_a_src;
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            iop_a_src += self->private_data.s_decode_id_part2[0].scratch;
--            if (a_src) {
--              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--            }
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--            status = wuffs_gif__decoder__skip_blocks(self, a_src);
--            if (a_src) {
--              iop_a_src = a_src->data.ptr + a_src->meta.ri;
--            }
--            if (status.repr) {
--              goto suspend;
--            }
--          }
--          goto label__outer__break;
--        } else if (self->private_impl.f_lzw_read_from_return_value == 3u) {
--          status = wuffs_base__make_status(wuffs_gif__error__truncated_input);
--          goto exit;
--        } else if (self->private_impl.f_lzw_read_from_return_value == 4u) {
--          status = wuffs_base__make_status(wuffs_gif__error__bad_lzw_code);
--          goto exit;
--        }
--        status = wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_i_o);
--        goto exit;
--      }
--    }
--    label__outer__break:;
--    self->private_impl.f_compressed_ri = 0u;
--    self->private_impl.f_compressed_wi = 0u;
--    if ((self->private_impl.f_dst_y < self->private_impl.f_frame_rect_y1) && (self->private_impl.f_frame_rect_x0 != self->private_impl.f_frame_rect_x1) && (self->private_impl.f_frame_rect_y0 != self->private_impl.f_frame_rect_y1)) {
--      status = wuffs_base__make_status(wuffs_base__error__not_enough_data);
--      goto exit;
--    }
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_gif__decoder__decode_header(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__io_buffer* a_src);
- 
--    ok:
--    self->private_impl.p_decode_id_part2[0] = 0;
--    goto exit;
--  }
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_gif__decoder__decode_lsd(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__io_buffer* a_src);
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_id_part2[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_decode_id_part2[0].v_block_size = v_block_size;
--  self->private_data.s_decode_id_part2[0].v_need_block_size = v_need_block_size;
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_gif__decoder__decode_extension(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__io_buffer* a_src);
- 
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_gif__decoder__skip_blocks(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__io_buffer* a_src);
- 
--  return status;
--}
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_gif__decoder__decode_ae(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__io_buffer* a_src);
- 
--// -------- func gif.decoder.copy_to_image_buffer
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_gif__decoder__decode_gc(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_gif__decoder__decode_id_part0(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_gif__decoder__decode_id_part1(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_gif__decoder__decode_id_part2(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf);
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
- wuffs_gif__decoder__copy_to_image_buffer(
-     wuffs_gif__decoder* self,
-     wuffs_base__pixel_buffer* a_pb,
--    wuffs_base__slice_u8 a_src) {
--  wuffs_base__slice_u8 v_dst = {0};
--  wuffs_base__slice_u8 v_src = {0};
--  uint64_t v_width_in_bytes = 0;
--  uint64_t v_n = 0;
--  uint64_t v_src_ri = 0;
--  wuffs_base__pixel_format v_pixfmt = {0};
--  uint32_t v_bytes_per_pixel = 0;
--  uint32_t v_bits_per_pixel = 0;
--  wuffs_base__table_u8 v_tab = {0};
--  uint64_t v_i = 0;
--  uint64_t v_j = 0;
--  uint32_t v_replicate_y0 = 0;
--  uint32_t v_replicate_y1 = 0;
--  wuffs_base__slice_u8 v_replicate_dst = {0};
--  wuffs_base__slice_u8 v_replicate_src = {0};
-+    wuffs_base__slice_u8 a_src);
- 
--  v_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_pb);
--  v_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_pixfmt);
--  if ((v_bits_per_pixel & 7u) != 0u) {
--    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_gif__decoder__lzw_init(
-+    wuffs_gif__decoder* self);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_gif__decoder__lzw_read_from(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+// ---------------- VTables
-+
-+const wuffs_base__image_decoder__func_ptrs
-+wuffs_gif__decoder__func_ptrs_for__wuffs_base__image_decoder = {
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__pixel_buffer*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__pixel_blend,
-+      wuffs_base__slice_u8,
-+      wuffs_base__decode_frame_options*))(&wuffs_gif__decoder__decode_frame),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__frame_config*,
-+      wuffs_base__io_buffer*))(&wuffs_gif__decoder__decode_frame_config),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__image_config*,
-+      wuffs_base__io_buffer*))(&wuffs_gif__decoder__decode_image_config),
-+  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_gif__decoder__frame_dirty_rect),
-+  (uint64_t(*)(const void*,
-+      uint32_t))(&wuffs_gif__decoder__get_quirk),
-+  (uint32_t(*)(const void*))(&wuffs_gif__decoder__num_animation_loops),
-+  (uint64_t(*)(const void*))(&wuffs_gif__decoder__num_decoded_frame_configs),
-+  (uint64_t(*)(const void*))(&wuffs_gif__decoder__num_decoded_frames),
-+  (wuffs_base__status(*)(void*,
-+      uint64_t,
-+      uint64_t))(&wuffs_gif__decoder__restart_frame),
-+  (wuffs_base__status(*)(void*,
-+      uint32_t,
-+      uint64_t))(&wuffs_gif__decoder__set_quirk),
-+  (wuffs_base__empty_struct(*)(void*,
-+      uint32_t,
-+      bool))(&wuffs_gif__decoder__set_report_metadata),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__more_information*,
-+      wuffs_base__io_buffer*))(&wuffs_gif__decoder__tell_me_more),
-+  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_gif__decoder__workbuf_len),
-+};
-+
-+// ---------------- Initializer Implementations
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_gif__decoder__initialize(
-+    wuffs_gif__decoder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options){
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
--  v_bytes_per_pixel = (v_bits_per_pixel >> 3u);
--  v_width_in_bytes = ((uint64_t)((self->private_impl.f_width * v_bytes_per_pixel)));
--  v_tab = wuffs_base__pixel_buffer__plane(a_pb, 0u);
--  while (v_src_ri < ((uint64_t)(a_src.len))) {
--    v_src = wuffs_base__slice_u8__subslice_i(a_src, v_src_ri);
--    if (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1) {
--      if (self->private_impl.f_quirks[3u]) {
--        return wuffs_base__make_status(NULL);
--      }
--      return wuffs_base__make_status(wuffs_base__error__too_much_data);
--    }
--    v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
--    if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
--      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, 0u);
--    } else if (v_width_in_bytes < ((uint64_t)(v_dst.len))) {
--      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_width_in_bytes);
--    }
--    v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_bytes_per_pixel)));
--    if (v_i < ((uint64_t)(v_dst.len))) {
--      v_j = (((uint64_t)(self->private_impl.f_frame_rect_x1)) * ((uint64_t)(v_bytes_per_pixel)));
--      if ((v_i <= v_j) && (v_j <= ((uint64_t)(v_dst.len)))) {
--        v_dst = wuffs_base__slice_u8__subslice_ij(v_dst, v_i, v_j);
--      } else {
--        v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_i);
--      }
--      v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024), v_src);
--      wuffs_base__u64__sat_add_indirect(&v_src_ri, v_n);
--      wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
--      self->private_impl.f_dirty_max_excl_y = wuffs_base__u32__max(self->private_impl.f_dirty_max_excl_y, wuffs_base__u32__sat_add(self->private_impl.f_dst_y, 1u));
--    }
--    if (self->private_impl.f_frame_rect_x1 <= self->private_impl.f_dst_x) {
--      self->private_impl.f_dst_x = self->private_impl.f_frame_rect_x0;
--      if (self->private_impl.f_interlace == 0u) {
--        wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_y, 1u);
--        continue;
--      }
--      if ((self->private_impl.f_num_decoded_frames_value == 0u) &&  ! self->private_impl.f_gc_has_transparent_index && (self->private_impl.f_interlace > 1u)) {
--        v_replicate_src = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
--        v_replicate_y0 = wuffs_base__u32__sat_add(self->private_impl.f_dst_y, 1u);
--        v_replicate_y1 = wuffs_base__u32__sat_add(self->private_impl.f_dst_y, ((uint32_t)(WUFFS_GIF__INTERLACE_COUNT[self->private_impl.f_interlace])));
--        v_replicate_y1 = wuffs_base__u32__min(v_replicate_y1, self->private_impl.f_frame_rect_y1);
--        while (v_replicate_y0 < v_replicate_y1) {
--          v_replicate_dst = wuffs_base__table_u8__row_u32(v_tab, v_replicate_y0);
--          wuffs_base__slice_u8__copy_from_slice(v_replicate_dst, v_replicate_src);
--          v_replicate_y0 += 1u;
--        }
--        self->private_impl.f_dirty_max_excl_y = wuffs_base__u32__max(self->private_impl.f_dirty_max_excl_y, v_replicate_y1);
--      }
--      wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_y, ((uint32_t)(WUFFS_GIF__INTERLACE_DELTA[self->private_impl.f_interlace])));
--      while ((self->private_impl.f_interlace > 0u) && (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1)) {
--#if defined(__GNUC__)
-+  if (sizeof(*self) != sizeof_star_self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  }
-+  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
-+      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+  }
-+
-+  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
-+    // The whole point of this if-check is to detect an uninitialized *self.
-+    // We disable the warning on GCC. Clang-5.0 does not have this warning.
-+#if !defined(__clang__) && defined(__GNUC__)
- #pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wconversion"
--#endif
--        self->private_impl.f_interlace -= 1u;
--#if defined(__GNUC__)
--#pragma GCC diagnostic pop
-+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
- #endif
--        self->private_impl.f_dst_y = wuffs_base__u32__sat_add(self->private_impl.f_frame_rect_y0, WUFFS_GIF__INTERLACE_START[self->private_impl.f_interlace]);
--      }
--      continue;
--    }
--    if (((uint64_t)(a_src.len)) == v_src_ri) {
--      break;
--    } else if (((uint64_t)(a_src.len)) < v_src_ri) {
--      return wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_i_o);
-+    if (self->private_impl.magic != 0) {
-+      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-     }
--    v_n = ((uint64_t)((self->private_impl.f_frame_rect_x1 - self->private_impl.f_dst_x)));
--    v_n = wuffs_base__u64__min(v_n, (((uint64_t)(a_src.len)) - v_src_ri));
--    wuffs_base__u64__sat_add_indirect(&v_src_ri, v_n);
--    wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
--    if (self->private_impl.f_frame_rect_x1 <= self->private_impl.f_dst_x) {
--      self->private_impl.f_dst_x = self->private_impl.f_frame_rect_x0;
--      wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_y, ((uint32_t)(WUFFS_GIF__INTERLACE_DELTA[self->private_impl.f_interlace])));
--      while ((self->private_impl.f_interlace > 0u) && (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1)) {
--#if defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wconversion"
--#endif
--        self->private_impl.f_interlace -= 1u;
--#if defined(__GNUC__)
-+#if !defined(__clang__) && defined(__GNUC__)
- #pragma GCC diagnostic pop
- #endif
--        self->private_impl.f_dst_y = wuffs_base__u32__sat_add(self->private_impl.f_frame_rect_y0, WUFFS_GIF__INTERLACE_START[self->private_impl.f_interlace]);
--      }
--      continue;
--    }
--    if (v_src_ri != ((uint64_t)(a_src.len))) {
--      return wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_i_o);
-+  } else {
-+    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
-+      memset(self, 0, sizeof(*self));
-+      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-+    } else {
-+      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-     }
--    break;
-   }
-+
-+  self->private_impl.magic = WUFFS_BASE__MAGIC;
-+  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
-+      wuffs_base__image_decoder__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
-+      (const void*)(&wuffs_gif__decoder__func_ptrs_for__wuffs_base__image_decoder);
-   return wuffs_base__make_status(NULL);
- }
- 
--// -------- func gif.decoder.lzw_init
-+wuffs_gif__decoder*
-+wuffs_gif__decoder__alloc(void) {
-+  wuffs_gif__decoder* x =
-+      (wuffs_gif__decoder*)(calloc(1, sizeof(wuffs_gif__decoder)));
-+  if (!x) {
-+    return NULL;
-+  }
-+  if (wuffs_gif__decoder__initialize(
-+      x, sizeof(wuffs_gif__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+    free(x);
-+    return NULL;
-+  }
-+  return x;
-+}
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_gif__decoder__lzw_init(
--    wuffs_gif__decoder* self) {
--  uint32_t v_i = 0;
-+size_t
-+sizeof__wuffs_gif__decoder(void) {
-+  return sizeof(wuffs_gif__decoder);
-+}
- 
--  self->private_impl.f_lzw_literal_width = 8u;
--  if (self->private_impl.f_lzw_pending_literal_width_plus_one > 0u) {
--    self->private_impl.f_lzw_literal_width = (self->private_impl.f_lzw_pending_literal_width_plus_one - 1u);
-+// ---------------- Function Implementations
-+
-+// -------- func gif.decoder.get_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_gif__decoder__get_quirk(
-+    const wuffs_gif__decoder* self,
-+    uint32_t a_key) {
-+  if (!self) {
-+    return 0;
-   }
--  self->private_impl.f_lzw_clear_code = (((uint32_t)(1u)) << self->private_impl.f_lzw_literal_width);
--  self->private_impl.f_lzw_end_code = (self->private_impl.f_lzw_clear_code + 1u);
--  self->private_impl.f_lzw_save_code = self->private_impl.f_lzw_end_code;
--  self->private_impl.f_lzw_prev_code = self->private_impl.f_lzw_end_code;
--  self->private_impl.f_lzw_width = (self->private_impl.f_lzw_literal_width + 1u);
--  self->private_impl.f_lzw_bits = 0u;
--  self->private_impl.f_lzw_n_bits = 0u;
--  self->private_impl.f_lzw_output_ri = 0u;
--  self->private_impl.f_lzw_output_wi = 0u;
--  v_i = 0u;
--  while (v_i < self->private_impl.f_lzw_clear_code) {
--    self->private_data.f_lzw_lm1s[v_i] = 0u;
--    self->private_data.f_lzw_suffixes[v_i][0u] = ((uint8_t)(v_i));
--    v_i += 1u;
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-   }
--  return wuffs_base__make_empty_struct();
-+
-+  uint32_t v_key = 0;
-+
-+  if (a_key >= 1041635328u) {
-+    v_key = (a_key - 1041635328u);
-+    if (v_key < 7u) {
-+      if (self->private_impl.f_quirks[v_key]) {
-+        return 1u;
-+      }
-+    }
-+  }
-+  return 0u;
- }
- 
--// -------- func gif.decoder.lzw_read_from
-+// -------- func gif.decoder.set_quirk
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_gif__decoder__lzw_read_from(
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_gif__decoder__set_quirk(
-     wuffs_gif__decoder* self,
--    wuffs_base__io_buffer* a_src) {
--  uint32_t v_clear_code = 0;
--  uint32_t v_end_code = 0;
--  uint32_t v_save_code = 0;
--  uint32_t v_prev_code = 0;
--  uint32_t v_width = 0;
--  uint32_t v_bits = 0;
--  uint32_t v_n_bits = 0;
--  uint32_t v_output_wi = 0;
--  uint32_t v_code = 0;
--  uint32_t v_c = 0;
--  uint32_t v_o = 0;
--  uint32_t v_steps = 0;
--  uint8_t v_first_byte = 0;
--  uint16_t v_lm1_b = 0;
--  uint16_t v_lm1_a = 0;
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
- 
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
-+  if ((self->private_impl.f_call_sequence == 0u) && (a_key >= 1041635328u)) {
-+    a_key -= 1041635328u;
-+    if (a_key < 7u) {
-+      self->private_impl.f_quirks[a_key] = (a_value > 0u);
-+      return wuffs_base__make_status(NULL);
-+    }
-   }
-+  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+}
- 
--  v_clear_code = self->private_impl.f_lzw_clear_code;
--  v_end_code = self->private_impl.f_lzw_end_code;
--  v_save_code = self->private_impl.f_lzw_save_code;
--  v_prev_code = self->private_impl.f_lzw_prev_code;
--  v_width = self->private_impl.f_lzw_width;
--  v_bits = self->private_impl.f_lzw_bits;
--  v_n_bits = self->private_impl.f_lzw_n_bits;
--  v_output_wi = self->private_impl.f_lzw_output_wi;
--  while (true) {
--    if (v_n_bits < v_width) {
--      if (((uint64_t)(io2_a_src - iop_a_src)) >= 4u) {
--        v_bits |= ((uint32_t)(wuffs_base__peek_u32le__no_bounds_check(iop_a_src) << v_n_bits));
--        iop_a_src += ((31u - v_n_bits) >> 3u);
--        v_n_bits |= 24u;
--      } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--        if (a_src && a_src->meta.closed) {
--          self->private_impl.f_lzw_read_from_return_value = 3u;
--        } else {
--          self->private_impl.f_lzw_read_from_return_value = 2u;
--        }
--        break;
--      } else {
--        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
--        iop_a_src += 1u;
--        v_n_bits += 8u;
--        if (v_n_bits >= v_width) {
--        } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--          if (a_src && a_src->meta.closed) {
--            self->private_impl.f_lzw_read_from_return_value = 3u;
--          } else {
--            self->private_impl.f_lzw_read_from_return_value = 2u;
--          }
--          break;
--        } else {
--          v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
--          iop_a_src += 1u;
--          v_n_bits += 8u;
--          if (v_n_bits < v_width) {
--            self->private_impl.f_lzw_read_from_return_value = 5u;
--            break;
--          }
--        }
--      }
--    }
--    v_code = ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_width));
--    v_bits >>= v_width;
--    v_n_bits -= v_width;
--    if (v_code < v_clear_code) {
--      self->private_data.f_lzw_output[v_output_wi] = ((uint8_t)(v_code));
--      v_output_wi = ((v_output_wi + 1u) & 8191u);
--      if (v_save_code <= 4095u) {
--        v_lm1_a = (((uint16_t)(self->private_data.f_lzw_lm1s[v_prev_code] + 1u)) & 4095u);
--        self->private_data.f_lzw_lm1s[v_save_code] = v_lm1_a;
--        if ((v_lm1_a % 8u) != 0u) {
--          self->private_impl.f_lzw_prefixes[v_save_code] = self->private_impl.f_lzw_prefixes[v_prev_code];
--          memcpy(self->private_data.f_lzw_suffixes[v_save_code],self->private_data.f_lzw_suffixes[v_prev_code], sizeof(self->private_data.f_lzw_suffixes[v_save_code]));
--          self->private_data.f_lzw_suffixes[v_save_code][(v_lm1_a % 8u)] = ((uint8_t)(v_code));
--        } else {
--          self->private_impl.f_lzw_prefixes[v_save_code] = ((uint16_t)(v_prev_code));
--          self->private_data.f_lzw_suffixes[v_save_code][0u] = ((uint8_t)(v_code));
--        }
--        v_save_code += 1u;
--        if (v_width < 12u) {
--          v_width += (1u & (v_save_code >> v_width));
--        }
--        v_prev_code = v_code;
--      }
--    } else if (v_code <= v_end_code) {
--      if (v_code == v_end_code) {
--        self->private_impl.f_lzw_read_from_return_value = 0u;
--        break;
--      }
--      v_save_code = v_end_code;
--      v_prev_code = v_end_code;
--      v_width = (self->private_impl.f_lzw_literal_width + 1u);
--    } else if (v_code <= v_save_code) {
--      v_c = v_code;
--      if (v_code == v_save_code) {
--        v_c = v_prev_code;
--      }
--      v_o = ((v_output_wi + (((uint32_t)(self->private_data.f_lzw_lm1s[v_c])) & 4294967288u)) & 8191u);
--      v_output_wi = ((v_output_wi + 1u + ((uint32_t)(self->private_data.f_lzw_lm1s[v_c]))) & 8191u);
--      v_steps = (((uint32_t)(self->private_data.f_lzw_lm1s[v_c])) >> 3u);
--      while (true) {
--        memcpy((self->private_data.f_lzw_output)+(v_o), (self->private_data.f_lzw_suffixes[v_c]), 8u);
--        if (v_steps <= 0u) {
--          break;
--        }
--        v_steps -= 1u;
--        v_o = (((uint32_t)(v_o - 8u)) & 8191u);
--        v_c = ((uint32_t)(self->private_impl.f_lzw_prefixes[v_c]));
--      }
--      v_first_byte = self->private_data.f_lzw_suffixes[v_c][0u];
--      if (v_code == v_save_code) {
--        self->private_data.f_lzw_output[v_output_wi] = v_first_byte;
--        v_output_wi = ((v_output_wi + 1u) & 8191u);
--      }
--      if (v_save_code <= 4095u) {
--        v_lm1_b = (((uint16_t)(self->private_data.f_lzw_lm1s[v_prev_code] + 1u)) & 4095u);
--        self->private_data.f_lzw_lm1s[v_save_code] = v_lm1_b;
--        if ((v_lm1_b % 8u) != 0u) {
--          self->private_impl.f_lzw_prefixes[v_save_code] = self->private_impl.f_lzw_prefixes[v_prev_code];
--          memcpy(self->private_data.f_lzw_suffixes[v_save_code],self->private_data.f_lzw_suffixes[v_prev_code], sizeof(self->private_data.f_lzw_suffixes[v_save_code]));
--          self->private_data.f_lzw_suffixes[v_save_code][(v_lm1_b % 8u)] = v_first_byte;
--        } else {
--          self->private_impl.f_lzw_prefixes[v_save_code] = ((uint16_t)(v_prev_code));
--          self->private_data.f_lzw_suffixes[v_save_code][0u] = ((uint8_t)(v_first_byte));
--        }
--        v_save_code += 1u;
--        if (v_width < 12u) {
--          v_width += (1u & (v_save_code >> v_width));
--        }
--        v_prev_code = v_code;
--      }
--    } else {
--      self->private_impl.f_lzw_read_from_return_value = 4u;
--      break;
--    }
--    if (v_output_wi > 4095u) {
--      self->private_impl.f_lzw_read_from_return_value = 1u;
--      break;
--    }
-+// -------- func gif.decoder.decode_image_config
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_gif__decoder__decode_image_config(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
--  if (self->private_impl.f_lzw_read_from_return_value != 2u) {
--    while (v_n_bits >= 8u) {
--      v_n_bits -= 8u;
--      if (iop_a_src > io1_a_src) {
--        iop_a_src--;
--      } else {
--        self->private_impl.f_lzw_read_from_return_value = 5u;
--        break;
--      }
--    }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-   }
--  self->private_impl.f_lzw_save_code = v_save_code;
--  self->private_impl.f_lzw_prev_code = v_prev_code;
--  self->private_impl.f_lzw_width = v_width;
--  self->private_impl.f_lzw_bits = v_bits;
--  self->private_impl.f_lzw_n_bits = v_n_bits;
--  self->private_impl.f_lzw_output_wi = v_output_wi;
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  if (!a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-   }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 1)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  return wuffs_base__make_empty_struct();
--}
--
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GIF)
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GZIP)
-+  uint32_t coro_susp_point = self->private_impl.p_decode_image_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--// ---------------- Status Codes Implementations
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_gif__decoder__do_decode_image_config(self, a_dst, a_src);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_gif__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
- 
--const char wuffs_gzip__error__bad_checksum[] = "#gzip: bad checksum";
--const char wuffs_gzip__error__bad_compression_method[] = "#gzip: bad compression method";
--const char wuffs_gzip__error__bad_encoding_flags[] = "#gzip: bad encoding flags";
--const char wuffs_gzip__error__bad_header[] = "#gzip: bad header";
--const char wuffs_gzip__error__truncated_input[] = "#gzip: truncated input";
-+    ok:
-+    self->private_impl.p_decode_image_config = 0;
-+    goto exit;
-+  }
- 
--// ---------------- Private Consts
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
- 
--// ---------------- Private Initializer Prototypes
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
- 
--// ---------------- Private Function Prototypes
-+// -------- func gif.decoder.do_decode_image_config
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_gzip__decoder__do_transform_io(
--    wuffs_gzip__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__slice_u8 a_workbuf);
--
--// ---------------- VTables
--
--const wuffs_base__io_transformer__func_ptrs
--wuffs_gzip__decoder__func_ptrs_for__wuffs_base__io_transformer = {
--  (uint64_t(*)(const void*,
--      uint32_t))(&wuffs_gzip__decoder__get_quirk),
--  (uint64_t(*)(const void*))(&wuffs_gzip__decoder__history_retain_length),
--  (wuffs_base__status(*)(void*,
--      uint32_t,
--      uint64_t))(&wuffs_gzip__decoder__set_quirk),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__io_buffer*,
--      wuffs_base__io_buffer*,
--      wuffs_base__slice_u8))(&wuffs_gzip__decoder__transform_io),
--  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_gzip__decoder__workbuf_len),
--};
-+wuffs_gif__decoder__do_decode_image_config(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--// ---------------- Initializer Implementations
-+  bool v_ffio = false;
- 
--wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_gzip__decoder__initialize(
--    wuffs_gzip__decoder* self,
--    size_t sizeof_star_self,
--    uint64_t wuffs_version,
--    uint32_t options){
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (sizeof(*self) != sizeof_star_self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
--  }
--  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
--      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
--    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
--  }
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
--    // The whole point of this if-check is to detect an uninitialized *self.
--    // We disable the warning on GCC. Clang-5.0 does not have this warning.
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
--#endif
--    if (self->private_impl.magic != 0) {
--      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+    if (self->private_impl.f_call_sequence != 0u) {
-+      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+      goto exit;
-+    } else if ( ! self->private_impl.f_seen_header) {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      status = wuffs_gif__decoder__decode_header(self, a_src);
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+      status = wuffs_gif__decoder__decode_lsd(self, a_src);
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+      self->private_impl.f_seen_header = true;
-     }
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--  } else {
--    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
--      memset(self, 0, sizeof(*self));
--      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
--    } else {
--      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+    status = wuffs_gif__decoder__decode_up_to_id_part1(self, a_src);
-+    if (status.repr) {
-+      goto suspend;
-     }
--  }
--
--  {
--    wuffs_base__status z = wuffs_crc32__ieee_hasher__initialize(
--        &self->private_data.f_checksum, sizeof(self->private_data.f_checksum), WUFFS_VERSION, options);
--    if (z.repr) {
--      return z;
-+    v_ffio =  ! self->private_impl.f_gc_has_transparent_index;
-+    if ( ! self->private_impl.f_quirks[2u]) {
-+      v_ffio = (v_ffio &&
-+          (self->private_impl.f_frame_rect_x0 == 0u) &&
-+          (self->private_impl.f_frame_rect_y0 == 0u) &&
-+          (self->private_impl.f_frame_rect_x1 == self->private_impl.f_width) &&
-+          (self->private_impl.f_frame_rect_y1 == self->private_impl.f_height));
-+    } else if (v_ffio) {
-+      self->private_impl.f_black_color_u32_argb_premul = 4278190080u;
-     }
--  }
--  {
--    wuffs_base__status z = wuffs_deflate__decoder__initialize(
--        &self->private_data.f_flate, sizeof(self->private_data.f_flate), WUFFS_VERSION, options);
--    if (z.repr) {
--      return z;
-+    if (self->private_impl.f_background_color_u32_argb_premul == 77u) {
-+      self->private_impl.f_background_color_u32_argb_premul = self->private_impl.f_black_color_u32_argb_premul;
-+    }
-+    if (a_dst != NULL) {
-+      wuffs_base__image_config__set(
-+          a_dst,
-+          2198077448u,
-+          0u,
-+          self->private_impl.f_width,
-+          self->private_impl.f_height,
-+          self->private_impl.f_frame_config_io_position,
-+          v_ffio);
-+    }
-+    if (self->private_impl.f_call_sequence == 0u) {
-+      self->private_impl.f_call_sequence = 32u;
-     }
--  }
--  self->private_impl.magic = WUFFS_BASE__MAGIC;
--  self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
--      wuffs_base__io_transformer__vtable_name;
--  self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
--      (const void*)(&wuffs_gzip__decoder__func_ptrs_for__wuffs_base__io_transformer);
--  return wuffs_base__make_status(NULL);
--}
- 
--wuffs_gzip__decoder*
--wuffs_gzip__decoder__alloc(void) {
--  wuffs_gzip__decoder* x =
--      (wuffs_gzip__decoder*)(calloc(sizeof(wuffs_gzip__decoder), 1));
--  if (!x) {
--    return NULL;
--  }
--  if (wuffs_gzip__decoder__initialize(
--      x, sizeof(wuffs_gzip__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
--    free(x);
--    return NULL;
-+    goto ok;
-+    ok:
-+    self->private_impl.p_do_decode_image_config = 0;
-+    goto exit;
-   }
--  return x;
--}
--
--size_t
--sizeof__wuffs_gzip__decoder(void) {
--  return sizeof(wuffs_gzip__decoder);
--}
- 
--// ---------------- Function Implementations
--
--// -------- func gzip.decoder.get_quirk
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_gzip__decoder__get_quirk(
--    const wuffs_gzip__decoder* self,
--    uint32_t a_key) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
--  if ((a_key == 1u) && self->private_impl.f_ignore_checksum) {
--    return 1u;
--  }
--  return 0u;
-+  goto exit;
-+  exit:
-+  return status;
- }
- 
--// -------- func gzip.decoder.set_quirk
-+// -------- func gif.decoder.set_report_metadata
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_gzip__decoder__set_quirk(
--    wuffs_gzip__decoder* self,
--    uint32_t a_key,
--    uint64_t a_value) {
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_gif__decoder__set_report_metadata(
-+    wuffs_gif__decoder* self,
-+    uint32_t a_fourcc,
-+    bool a_report) {
-   if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+    return wuffs_base__make_empty_struct();
-   }
-   if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--
--  if (a_key == 1u) {
--    self->private_impl.f_ignore_checksum = (a_value > 0u);
--    return wuffs_base__make_status(NULL);
--  }
--  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
--}
--
--// -------- func gzip.decoder.history_retain_length
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_gzip__decoder__history_retain_length(
--    const wuffs_gzip__decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
-+    return wuffs_base__make_empty_struct();
-   }
- 
--  return 0u;
--}
--
--// -------- func gzip.decoder.workbuf_len
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_gzip__decoder__workbuf_len(
--    const wuffs_gzip__decoder* self) {
--  if (!self) {
--    return wuffs_base__utility__empty_range_ii_u64();
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_range_ii_u64();
-+  if (a_fourcc == 1229144912u) {
-+    self->private_impl.f_report_metadata_iccp = a_report;
-+  } else if (a_fourcc == 1481461792u) {
-+    self->private_impl.f_report_metadata_xmp = a_report;
-   }
--
--  return wuffs_base__utility__make_range_ii_u64(1u, 1u);
-+  return wuffs_base__make_empty_struct();
- }
- 
--// -------- func gzip.decoder.transform_io
-+// -------- func gif.decoder.tell_me_more
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_gzip__decoder__transform_io(
--    wuffs_gzip__decoder* self,
-+wuffs_gif__decoder__tell_me_more(
-+    wuffs_gif__decoder* self,
-     wuffs_base__io_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__slice_u8 a_workbuf) {
-+    wuffs_base__more_information* a_minfo,
-+    wuffs_base__io_buffer* a_src) {
-   if (!self) {
-     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
-@@ -39737,7 +41163,7 @@ wuffs_gzip__decoder__transform_io(
-     return wuffs_base__make_status(wuffs_base__error__bad_argument);
-   }
-   if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 1)) {
-+      (self->private_impl.active_coroutine != 2)) {
-     self->private_impl.magic = WUFFS_BASE__DISABLED;
-     return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-   }
-@@ -39746,17 +41172,17 @@ wuffs_gzip__decoder__transform_io(
- 
-   wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--  uint32_t coro_susp_point = self->private_impl.p_transform_io[0];
-+  uint32_t coro_susp_point = self->private_impl.p_tell_me_more;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
-     while (true) {
-       {
--        wuffs_base__status t_0 = wuffs_gzip__decoder__do_transform_io(self, a_dst, a_src, a_workbuf);
-+        wuffs_base__status t_0 = wuffs_gif__decoder__do_tell_me_more(self, a_dst, a_minfo, a_src);
-         v_status = t_0;
-       }
-       if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_gzip__error__truncated_input);
-+        status = wuffs_base__make_status(wuffs_gif__error__truncated_input);
-         goto exit;
-       }
-       status = v_status;
-@@ -39764,14 +41190,14 @@ wuffs_gzip__decoder__transform_io(
-     }
- 
-     ok:
--    self->private_impl.p_transform_io[0] = 0;
-+    self->private_impl.p_tell_me_more = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
-+  self->private_impl.p_tell_me_more = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
- 
-   goto exit;
-   exit:
-@@ -39781,40 +41207,19 @@ wuffs_gzip__decoder__transform_io(
-   return status;
- }
- 
--// -------- func gzip.decoder.do_transform_io
-+// -------- func gif.decoder.do_tell_me_more
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_gzip__decoder__do_transform_io(
--    wuffs_gzip__decoder* self,
-+wuffs_gif__decoder__do_tell_me_more(
-+    wuffs_gif__decoder* self,
-     wuffs_base__io_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__slice_u8 a_workbuf) {
-+    wuffs_base__more_information* a_minfo,
-+    wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint8_t v_c = 0;
--  uint8_t v_flags = 0;
--  uint16_t v_xlen = 0;
--  uint64_t v_mark = 0;
--  uint32_t v_checksum_got = 0;
--  uint32_t v_decoded_length_got = 0;
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
--  uint32_t v_checksum_want = 0;
--  uint32_t v_decoded_length_want = 0;
-+  uint64_t v_chunk_length = 0;
- 
--  uint8_t* iop_a_dst = NULL;
--  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_dst && a_dst->data.ptr) {
--    io0_a_dst = a_dst->data.ptr;
--    io1_a_dst = io0_a_dst + a_dst->meta.wi;
--    iop_a_dst = io1_a_dst;
--    io2_a_dst = io0_a_dst + a_dst->data.len;
--    if (a_dst->meta.closed) {
--      io2_a_dst = iop_a_dst;
--    }
--  }
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -39826,269 +41231,95 @@ wuffs_gzip__decoder__do_transform_io(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_transform_io[0];
--  if (coro_susp_point) {
--    v_flags = self->private_data.s_do_transform_io[0].v_flags;
--    v_checksum_got = self->private_data.s_do_transform_io[0].v_checksum_got;
--    v_decoded_length_got = self->private_data.s_do_transform_io[0].v_decoded_length_got;
--    v_checksum_want = self->private_data.s_do_transform_io[0].v_checksum_want;
--  }
-+  uint32_t coro_susp_point = self->private_impl.p_do_tell_me_more;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_0 = *iop_a_src++;
--      v_c = t_0;
--    }
--    if (v_c != 31u) {
--      status = wuffs_base__make_status(wuffs_gzip__error__bad_header);
--      goto exit;
--    }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_1 = *iop_a_src++;
--      v_c = t_1;
--    }
--    if (v_c != 139u) {
--      status = wuffs_base__make_status(wuffs_gzip__error__bad_header);
-+    if (((uint8_t)(self->private_impl.f_call_sequence & 16u)) == 0u) {
-+      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-       goto exit;
-     }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_2 = *iop_a_src++;
--      v_c = t_2;
--    }
--    if (v_c != 8u) {
--      status = wuffs_base__make_status(wuffs_gzip__error__bad_compression_method);
-+    if (self->private_impl.f_metadata_fourcc == 0u) {
-+      status = wuffs_base__make_status(wuffs_base__error__no_more_information);
-       goto exit;
-     }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_3 = *iop_a_src++;
--      v_flags = t_3;
--    }
--    self->private_data.s_do_transform_io[0].scratch = 6u;
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--    if (self->private_data.s_do_transform_io[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--      self->private_data.s_do_transform_io[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--      iop_a_src = io2_a_src;
--      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--      goto suspend;
--    }
--    iop_a_src += self->private_data.s_do_transform_io[0].scratch;
--    if ((v_flags & 4u) != 0u) {
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--        uint16_t t_4;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--          t_4 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
--          iop_a_src += 2;
--        } else {
--          self->private_data.s_do_transform_io[0].scratch = 0;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch;
--            uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
--            *scratch <<= 8;
--            *scratch >>= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
--            if (num_bits_4 == 8) {
--              t_4 = ((uint16_t)(*scratch));
--              break;
--            }
--            num_bits_4 += 8u;
--            *scratch |= ((uint64_t)(num_bits_4)) << 56;
--          }
--        }
--        v_xlen = t_4;
--      }
--      self->private_data.s_do_transform_io[0].scratch = ((uint32_t)(v_xlen));
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
--      if (self->private_data.s_do_transform_io[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--        self->private_data.s_do_transform_io[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--        iop_a_src = io2_a_src;
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      iop_a_src += self->private_data.s_do_transform_io[0].scratch;
--    }
--    if ((v_flags & 8u) != 0u) {
-+    while (true) {
-       while (true) {
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
-+        if (wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))) != self->private_impl.f_metadata_io_position) {
-+          if (a_minfo != NULL) {
-+            wuffs_base__more_information__set(a_minfo,
-+                2u,
-+                0u,
-+                self->private_impl.f_metadata_io_position,
-+                0u,
-+                0u);
-           }
--          uint8_t t_5 = *iop_a_src++;
--          v_c = t_5;
--        }
--        if (v_c == 0u) {
--          break;
-+          status = wuffs_base__make_status(wuffs_base__suspension__mispositioned_read);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+          continue;
-         }
--      }
--    }
--    if ((v_flags & 16u) != 0u) {
--      while (true) {
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
-+        if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+          if (a_minfo != NULL) {
-+            wuffs_base__more_information__set(a_minfo,
-+                0u,
-+                0u,
-+                0u,
-+                0u,
-+                0u);
-           }
--          uint8_t t_6 = *iop_a_src++;
--          v_c = t_6;
--        }
--        if (v_c == 0u) {
--          break;
--        }
--      }
--    }
--    if ((v_flags & 2u) != 0u) {
--      self->private_data.s_do_transform_io[0].scratch = 2u;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
--      if (self->private_data.s_do_transform_io[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--        self->private_data.s_do_transform_io[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--        iop_a_src = io2_a_src;
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      iop_a_src += self->private_data.s_do_transform_io[0].scratch;
--    }
--    if ((v_flags & 224u) != 0u) {
--      status = wuffs_base__make_status(wuffs_gzip__error__bad_encoding_flags);
--      goto exit;
--    }
--    while (true) {
--      v_mark = ((uint64_t)(iop_a_dst - io0_a_dst));
--      {
--        if (a_dst) {
--          a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--        }
--        if (a_src) {
--          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--        }
--        wuffs_base__status t_7 = wuffs_deflate__decoder__transform_io(&self->private_data.f_flate, a_dst, a_src, a_workbuf);
--        v_status = t_7;
--        if (a_dst) {
--          iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
--        }
--        if (a_src) {
--          iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
-+          continue;
-         }
-+        break;
-       }
--      if ( ! self->private_impl.f_ignore_checksum) {
--        v_checksum_got = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_checksum, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
--        v_decoded_length_got += ((uint32_t)(wuffs_base__io__count_since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)))));
--      }
--      if (wuffs_base__status__is_ok(&v_status)) {
-+      v_chunk_length = ((uint64_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src)));
-+      if (v_chunk_length <= 0u) {
-+        iop_a_src += 1u;
-         break;
-       }
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(12);
--    }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
--      uint32_t t_8;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_8 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--        iop_a_src += 4;
-+      if (self->private_impl.f_metadata_fourcc == 1481461792u) {
-+        v_chunk_length += 1u;
-       } else {
--        self->private_data.s_do_transform_io[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch;
--          uint32_t num_bits_8 = ((uint32_t)(*scratch >> 56));
--          *scratch <<= 8;
--          *scratch >>= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_8;
--          if (num_bits_8 == 24) {
--            t_8 = ((uint32_t)(*scratch));
--            break;
--          }
--          num_bits_8 += 8u;
--          *scratch |= ((uint64_t)(num_bits_8)) << 56;
--        }
-+        iop_a_src += 1u;
-       }
--      v_checksum_want = t_8;
--    }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
--      uint32_t t_9;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_9 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--        iop_a_src += 4;
--      } else {
--        self->private_data.s_do_transform_io[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch;
--          uint32_t num_bits_9 = ((uint32_t)(*scratch >> 56));
--          *scratch <<= 8;
--          *scratch >>= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_9;
--          if (num_bits_9 == 24) {
--            t_9 = ((uint32_t)(*scratch));
--            break;
--          }
--          num_bits_9 += 8u;
--          *scratch |= ((uint64_t)(num_bits_9)) << 56;
--        }
-+      self->private_impl.f_metadata_io_position = wuffs_base__u64__sat_add(wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))), v_chunk_length);
-+      if (a_minfo != NULL) {
-+        wuffs_base__more_information__set(a_minfo,
-+            3u,
-+            self->private_impl.f_metadata_fourcc,
-+            0u,
-+            wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))),
-+            self->private_impl.f_metadata_io_position);
-       }
--      v_decoded_length_want = t_9;
-+      status = wuffs_base__make_status(wuffs_base__suspension__even_more_information);
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
-     }
--    if ( ! self->private_impl.f_ignore_checksum && ((v_checksum_got != v_checksum_want) || (v_decoded_length_got != v_decoded_length_want))) {
--      status = wuffs_base__make_status(wuffs_gzip__error__bad_checksum);
--      goto exit;
-+    if (a_minfo != NULL) {
-+      wuffs_base__more_information__set(a_minfo,
-+          3u,
-+          self->private_impl.f_metadata_fourcc,
-+          0u,
-+          self->private_impl.f_metadata_io_position,
-+          self->private_impl.f_metadata_io_position);
-     }
-+    self->private_impl.f_call_sequence &= 239u;
-+    self->private_impl.f_metadata_fourcc = 0u;
-+    self->private_impl.f_metadata_io_position = 0u;
-+    status = wuffs_base__make_status(NULL);
-+    goto ok;
- 
-     ok:
--    self->private_impl.p_do_transform_io[0] = 0;
-+    self->private_impl.p_do_tell_me_more = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_do_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_do_transform_io[0].v_flags = v_flags;
--  self->private_data.s_do_transform_io[0].v_checksum_got = v_checksum_got;
--  self->private_data.s_do_transform_io[0].v_decoded_length_got = v_decoded_length_got;
--  self->private_data.s_do_transform_io[0].v_checksum_want = v_checksum_want;
-+  self->private_impl.p_do_tell_me_more = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
-   goto exit;
-   exit:
--  if (a_dst && a_dst->data.ptr) {
--    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--  }
-   if (a_src && a_src->data.ptr) {
-     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
-@@ -40096,2260 +41327,1143 @@ wuffs_gzip__decoder__do_transform_io(
-   return status;
- }
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GZIP)
--
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JPEG)
-+// -------- func gif.decoder.num_animation_loops
- 
--// ---------------- Status Codes Implementations
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_gif__decoder__num_animation_loops(
-+    const wuffs_gif__decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
- 
--const char wuffs_jpeg__error__bad_dht_marker[] = "#jpeg: bad DHT marker";
--const char wuffs_jpeg__error__bad_dqt_marker[] = "#jpeg: bad DQT marker";
--const char wuffs_jpeg__error__bad_dri_marker[] = "#jpeg: bad DRI marker";
--const char wuffs_jpeg__error__bad_sof_marker[] = "#jpeg: bad SOF marker";
--const char wuffs_jpeg__error__bad_sos_marker[] = "#jpeg: bad SOS marker";
--const char wuffs_jpeg__error__bad_header[] = "#jpeg: bad header";
--const char wuffs_jpeg__error__bad_marker[] = "#jpeg: bad marker";
--const char wuffs_jpeg__error__missing_huffman_table[] = "#jpeg: missing Huffman table";
--const char wuffs_jpeg__error__missing_quantization_table[] = "#jpeg: missing Quantization table";
--const char wuffs_jpeg__error__truncated_input[] = "#jpeg: truncated input";
--const char wuffs_jpeg__error__unsupported_arithmetic_coding[] = "#jpeg: unsupported arithmetic coding";
--const char wuffs_jpeg__error__unsupported_color_model[] = "#jpeg: unsupported color model";
--const char wuffs_jpeg__error__unsupported_fractional_sampling[] = "#jpeg: unsupported fractional sampling";
--const char wuffs_jpeg__error__unsupported_hierarchical_coding[] = "#jpeg: unsupported hierarchical coding";
--const char wuffs_jpeg__error__unsupported_implicit_height[] = "#jpeg: unsupported implicit height";
--const char wuffs_jpeg__error__unsupported_lossless_coding[] = "#jpeg: unsupported lossless coding";
--const char wuffs_jpeg__error__unsupported_marker[] = "#jpeg: unsupported marker";
--const char wuffs_jpeg__error__unsupported_precision_12_bits[] = "#jpeg: unsupported precision (12 bits)";
--const char wuffs_jpeg__error__unsupported_precision_16_bits[] = "#jpeg: unsupported precision (16 bits)";
--const char wuffs_jpeg__error__unsupported_precision[] = "#jpeg: unsupported precision";
--const char wuffs_jpeg__error__unsupported_scan_count[] = "#jpeg: unsupported scan count";
--const char wuffs_jpeg__error__internal_error_inconsistent_decoder_state[] = "#jpeg: internal error: inconsistent decoder state";
-+  if (self->private_impl.f_seen_num_animation_loops_value) {
-+    return self->private_impl.f_num_animation_loops_value;
-+  }
-+  if (self->private_impl.f_num_decoded_frame_configs_value > 1u) {
-+    return 1u;
-+  }
-+  return 0u;
-+}
- 
--// ---------------- Private Consts
-+// -------- func gif.decoder.num_decoded_frame_configs
- 
--static const uint8_t
--WUFFS_JPEG__UNZIG[80] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  0, 0, 1, 8, 16, 9, 2, 3,
--  10, 17, 24, 32, 25, 18, 11, 4,
--  5, 12, 19, 26, 33, 40, 48, 41,
--  34, 27, 20, 13, 6, 7, 14, 21,
--  28, 35, 42, 49, 56, 57, 50, 43,
--  36, 29, 22, 15, 23, 30, 37, 44,
--  51, 58, 59, 52, 45, 38, 31, 39,
--  46, 53, 60, 61, 54, 47, 55, 62,
--  63, 63, 63, 63, 63, 63, 63, 63,
--  63, 63, 63, 63, 63, 63, 63, 63,
--};
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_gif__decoder__num_decoded_frame_configs(
-+    const wuffs_gif__decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
- 
--static const uint8_t
--WUFFS_JPEG__BIAS_AND_CLAMP[1024] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  128, 129, 130, 131, 132, 133, 134, 135,
--  136, 137, 138, 139, 140, 141, 142, 143,
--  144, 145, 146, 147, 148, 149, 150, 151,
--  152, 153, 154, 155, 156, 157, 158, 159,
--  160, 161, 162, 163, 164, 165, 166, 167,
--  168, 169, 170, 171, 172, 173, 174, 175,
--  176, 177, 178, 179, 180, 181, 182, 183,
--  184, 185, 186, 187, 188, 189, 190, 191,
--  192, 193, 194, 195, 196, 197, 198, 199,
--  200, 201, 202, 203, 204, 205, 206, 207,
--  208, 209, 210, 211, 212, 213, 214, 215,
--  216, 217, 218, 219, 220, 221, 222, 223,
--  224, 225, 226, 227, 228, 229, 230, 231,
--  232, 233, 234, 235, 236, 237, 238, 239,
--  240, 241, 242, 243, 244, 245, 246, 247,
--  248, 249, 250, 251, 252, 253, 254, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  255, 255, 255, 255, 255, 255, 255, 255,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 1, 2, 3, 4, 5, 6, 7,
--  8, 9, 10, 11, 12, 13, 14, 15,
--  16, 17, 18, 19, 20, 21, 22, 23,
--  24, 25, 26, 27, 28, 29, 30, 31,
--  32, 33, 34, 35, 36, 37, 38, 39,
--  40, 41, 42, 43, 44, 45, 46, 47,
--  48, 49, 50, 51, 52, 53, 54, 55,
--  56, 57, 58, 59, 60, 61, 62, 63,
--  64, 65, 66, 67, 68, 69, 70, 71,
--  72, 73, 74, 75, 76, 77, 78, 79,
--  80, 81, 82, 83, 84, 85, 86, 87,
--  88, 89, 90, 91, 92, 93, 94, 95,
--  96, 97, 98, 99, 100, 101, 102, 103,
--  104, 105, 106, 107, 108, 109, 110, 111,
--  112, 113, 114, 115, 116, 117, 118, 119,
--  120, 121, 122, 123, 124, 125, 126, 127,
--};
-+  return self->private_impl.f_num_decoded_frame_configs_value;
-+}
- 
--static const uint16_t
--WUFFS_JPEG__EXTEND[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  0, 65535, 65533, 65529, 65521, 65505, 65473, 65409,
--  65281, 65025, 64513, 63489, 61441, 57345, 49153, 32769,
--};
-+// -------- func gif.decoder.num_decoded_frames
- 
--static const uint8_t
--WUFFS_JPEG__DEFAULT_HUFF_TABLE_DC_LUMA[29] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  0, 0, 1, 5, 1, 1, 1, 1,
--  1, 1, 0, 0, 0, 0, 0, 0,
--  0, 0, 1, 2, 3, 4, 5, 6,
--  7, 8, 9, 10, 11,
--};
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_gif__decoder__num_decoded_frames(
-+    const wuffs_gif__decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
- 
--static const uint8_t
--WUFFS_JPEG__DEFAULT_HUFF_TABLE_DC_CHROMA[29] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  1, 0, 3, 1, 1, 1, 1, 1,
--  1, 1, 1, 1, 0, 0, 0, 0,
--  0, 0, 1, 2, 3, 4, 5, 6,
--  7, 8, 9, 10, 11,
--};
-+  return self->private_impl.f_num_decoded_frames_value;
-+}
- 
--static const uint8_t
--WUFFS_JPEG__DEFAULT_HUFF_TABLE_AC_LUMA[179] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  16, 0, 2, 1, 3, 3, 2, 4,
--  3, 5, 5, 4, 4, 0, 0, 1,
--  125, 1, 2, 3, 0, 4, 17, 5,
--  18, 33, 49, 65, 6, 19, 81, 97,
--  7, 34, 113, 20, 50, 129, 145, 161,
--  8, 35, 66, 177, 193, 21, 82, 209,
--  240, 36, 51, 98, 114, 130, 9, 10,
--  22, 23, 24, 25, 26, 37, 38, 39,
--  40, 41, 42, 52, 53, 54, 55, 56,
--  57, 58, 67, 68, 69, 70, 71, 72,
--  73, 74, 83, 84, 85, 86, 87, 88,
--  89, 90, 99, 100, 101, 102, 103, 104,
--  105, 106, 115, 116, 117, 118, 119, 120,
--  121, 122, 131, 132, 133, 134, 135, 136,
--  137, 138, 146, 147, 148, 149, 150, 151,
--  152, 153, 154, 162, 163, 164, 165, 166,
--  167, 168, 169, 170, 178, 179, 180, 181,
--  182, 183, 184, 185, 186, 194, 195, 196,
--  197, 198, 199, 200, 201, 202, 210, 211,
--  212, 213, 214, 215, 216, 217, 218, 225,
--  226, 227, 228, 229, 230, 231, 232, 233,
--  234, 241, 242, 243, 244, 245, 246, 247,
--  248, 249, 250,
--};
-+// -------- func gif.decoder.frame_dirty_rect
- 
--static const uint8_t
--WUFFS_JPEG__DEFAULT_HUFF_TABLE_AC_CHROMA[179] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  17, 0, 2, 1, 2, 4, 4, 3,
--  4, 7, 5, 4, 4, 0, 1, 2,
--  119, 0, 1, 2, 3, 17, 4, 5,
--  33, 49, 6, 18, 65, 81, 7, 97,
--  113, 19, 34, 50, 129, 8, 20, 66,
--  145, 161, 177, 193, 9, 35, 51, 82,
--  240, 21, 98, 114, 209, 10, 22, 36,
--  52, 225, 37, 241, 23, 24, 25, 26,
--  38, 39, 40, 41, 42, 53, 54, 55,
--  56, 57, 58, 67, 68, 69, 70, 71,
--  72, 73, 74, 83, 84, 85, 86, 87,
--  88, 89, 90, 99, 100, 101, 102, 103,
--  104, 105, 106, 115, 116, 117, 118, 119,
--  120, 121, 122, 130, 131, 132, 133, 134,
--  135, 136, 137, 138, 146, 147, 148, 149,
--  150, 151, 152, 153, 154, 162, 163, 164,
--  165, 166, 167, 168, 169, 170, 178, 179,
--  180, 181, 182, 183, 184, 185, 186, 194,
--  195, 196, 197, 198, 199, 200, 201, 202,
--  210, 211, 212, 213, 214, 215, 216, 217,
--  218, 226, 227, 228, 229, 230, 231, 232,
--  233, 234, 242, 243, 244, 245, 246, 247,
--  248, 249, 250,
--};
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
-+wuffs_gif__decoder__frame_dirty_rect(
-+    const wuffs_gif__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_rect_ie_u32();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_rect_ie_u32();
-+  }
- 
--// ---------------- Private Initializer Prototypes
-+  return wuffs_base__utility__make_rect_ie_u32(
-+      wuffs_base__u32__min(self->private_impl.f_frame_rect_x0, self->private_impl.f_width),
-+      wuffs_base__u32__min(self->private_impl.f_frame_rect_y0, self->private_impl.f_height),
-+      wuffs_base__u32__min(self->private_impl.f_frame_rect_x1, self->private_impl.f_width),
-+      wuffs_base__u32__min(self->private_impl.f_dirty_max_excl_y, self->private_impl.f_height));
-+}
- 
--// ---------------- Private Function Prototypes
-+// -------- func gif.decoder.workbuf_len
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_jpeg__decoder__decode_idct(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__slice_u8 a_dst_buffer,
--    uint64_t a_dst_stride,
--    uint32_t a_q);
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_gif__decoder__workbuf_len(
-+    const wuffs_gif__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_jpeg__decoder__decode_idct__choosy_default(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__slice_u8 a_dst_buffer,
--    uint64_t a_dst_stride,
--    uint32_t a_q);
-+  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
-+}
- 
--#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_jpeg__decoder__decode_idct_x86_avx2(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__slice_u8 a_dst_buffer,
--    uint64_t a_dst_stride,
--    uint32_t a_q);
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_64)
-+// -------- func gif.decoder.restart_frame
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_jpeg__decoder__do_decode_image_config(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__image_config* a_dst,
--    wuffs_base__io_buffer* a_src);
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_gif__decoder__restart_frame(
-+    wuffs_gif__decoder* self,
-+    uint64_t a_index,
-+    uint64_t a_io_position) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_jpeg__decoder__decode_dqt(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__io_buffer* a_src);
-+  if (self->private_impl.f_call_sequence < 32u) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+  } else if (a_io_position == 0u) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  self->private_impl.f_delayed_num_decoded_frames = false;
-+  self->private_impl.f_frame_config_io_position = a_io_position;
-+  self->private_impl.f_num_decoded_frame_configs_value = a_index;
-+  self->private_impl.f_num_decoded_frames_value = a_index;
-+  wuffs_gif__decoder__reset_gc(self);
-+  self->private_impl.f_call_sequence = 40u;
-+  return wuffs_base__make_status(NULL);
-+}
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_jpeg__decoder__decode_dri(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__io_buffer* a_src);
-+// -------- func gif.decoder.decode_frame_config
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_jpeg__decoder__decode_appn(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__io_buffer* a_src,
--    uint8_t a_marker);
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_gif__decoder__decode_frame_config(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 3)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_jpeg__decoder__decode_sof(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__io_buffer* a_src);
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--WUFFS_BASE__GENERATED_C_CODE
--static uint32_t
--wuffs_jpeg__decoder__quantize_dimension(
--    const wuffs_jpeg__decoder* self,
--    uint32_t a_width,
--    uint8_t a_h,
--    uint8_t a_max_incl_h);
-+  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_jpeg__decoder__do_decode_frame_config(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__frame_config* a_dst,
--    wuffs_base__io_buffer* a_src);
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_gif__decoder__do_decode_frame_config(self, a_dst, a_src);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_gif__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_jpeg__decoder__do_decode_frame(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts);
-+    ok:
-+    self->private_impl.p_decode_frame_config = 0;
-+    goto exit;
-+  }
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_jpeg__decoder__decode_dht(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__io_buffer* a_src);
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static bool
--wuffs_jpeg__decoder__calculate_huff_tables(
--    wuffs_jpeg__decoder* self,
--    uint8_t a_tc4_th,
--    uint32_t a_total_count);
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_jpeg__decoder__decode_sos(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__slice_u8 a_workbuf);
-+// -------- func gif.decoder.do_decode_frame_config
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_jpeg__decoder__prepare_scan(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__io_buffer* a_src);
-+wuffs_gif__decoder__do_decode_frame_config(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_jpeg__decoder__use_default_huffman_table(
--    wuffs_jpeg__decoder* self,
--    uint8_t a_tc4_th);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_jpeg__decoder__calculate_single_component_scan_fields(
--    wuffs_jpeg__decoder* self);
-+  uint32_t v_background_color = 0;
-+  uint8_t v_flags = 0;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static bool
--wuffs_jpeg__decoder__calculate_multiple_component_scan_fields(
--    wuffs_jpeg__decoder* self);
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_jpeg__decoder__fill_bitstream(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__io_buffer* a_src);
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config;
-+  if (coro_susp_point) {
-+    v_background_color = self->private_data.s_do_decode_frame_config.v_background_color;
-+  }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_jpeg__decoder__load_mcu_blocks_for_single_component(
--    wuffs_jpeg__decoder* self,
--    uint32_t a_mx,
--    uint32_t a_my,
--    wuffs_base__slice_u8 a_workbuf,
--    uint32_t a_csel);
-+    self->private_impl.f_dirty_max_excl_y = 0u;
-+    if (((uint8_t)(self->private_impl.f_call_sequence & 16u)) != 0u) {
-+      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+      goto exit;
-+    } else if (self->private_impl.f_call_sequence == 32u) {
-+    } else if (self->private_impl.f_call_sequence < 32u) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      status = wuffs_gif__decoder__do_decode_image_config(self, NULL, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+    } else if (self->private_impl.f_call_sequence == 40u) {
-+      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
-+        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
-+        goto exit;
-+      }
-+    } else if (self->private_impl.f_call_sequence == 64u) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+      status = wuffs_gif__decoder__skip_frame(self, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+      if (self->private_impl.f_call_sequence >= 96u) {
-+        status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+        goto ok;
-+      }
-+    } else {
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-+    }
-+    if ((self->private_impl.f_num_decoded_frame_configs_value > 0u) || (self->private_impl.f_call_sequence == 40u)) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+      status = wuffs_gif__decoder__decode_up_to_id_part1(self, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+      if (self->private_impl.f_call_sequence >= 96u) {
-+        status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+        goto ok;
-+      }
-+    }
-+    v_background_color = self->private_impl.f_black_color_u32_argb_premul;
-+    if ( ! self->private_impl.f_gc_has_transparent_index) {
-+      v_background_color = self->private_impl.f_background_color_u32_argb_premul;
-+      if (self->private_impl.f_quirks[1u] && (self->private_impl.f_num_decoded_frame_configs_value == 0u)) {
-+        while (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
-+        }
-+        v_flags = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+        if (((uint8_t)(v_flags & 128u)) != 0u) {
-+          v_background_color = self->private_impl.f_black_color_u32_argb_premul;
-+        }
-+      }
-+    }
-+    if (a_dst != NULL) {
-+      wuffs_base__frame_config__set(
-+          a_dst,
-+          wuffs_base__utility__make_rect_ie_u32(
-+          wuffs_base__u32__min(self->private_impl.f_frame_rect_x0, self->private_impl.f_width),
-+          wuffs_base__u32__min(self->private_impl.f_frame_rect_y0, self->private_impl.f_height),
-+          wuffs_base__u32__min(self->private_impl.f_frame_rect_x1, self->private_impl.f_width),
-+          wuffs_base__u32__min(self->private_impl.f_frame_rect_y1, self->private_impl.f_height)),
-+          ((wuffs_base__flicks)(self->private_impl.f_gc_duration)),
-+          self->private_impl.f_num_decoded_frame_configs_value,
-+          self->private_impl.f_frame_config_io_position,
-+          self->private_impl.f_gc_disposal,
-+          ! self->private_impl.f_gc_has_transparent_index,
-+          false,
-+          v_background_color);
-+    }
-+    wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frame_configs_value, 1u);
-+    self->private_impl.f_call_sequence = 64u;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_jpeg__decoder__load_mcu_blocks_for_single_component__choosy_default(
--    wuffs_jpeg__decoder* self,
--    uint32_t a_mx,
--    uint32_t a_my,
--    wuffs_base__slice_u8 a_workbuf,
--    uint32_t a_csel);
-+    ok:
-+    self->private_impl.p_do_decode_frame_config = 0;
-+    goto exit;
-+  }
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_jpeg__decoder__load_mcu_blocks(
--    wuffs_jpeg__decoder* self,
--    uint32_t a_mx,
--    uint32_t a_my,
--    wuffs_base__slice_u8 a_workbuf);
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_do_decode_frame_config.v_background_color = v_background_color;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_jpeg__decoder__save_mcu_blocks(
--    wuffs_jpeg__decoder* self,
--    uint32_t a_mx,
--    uint32_t a_my,
--    wuffs_base__slice_u8 a_workbuf);
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_jpeg__decoder__skip_past_the_next_restart_marker(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__io_buffer* a_src);
-+  return status;
-+}
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_jpeg__decoder__apply_progressive_idct(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__slice_u8 a_workbuf);
-+// -------- func gif.decoder.skip_frame
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_jpeg__decoder__swizzle_gray(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__slice_u8 a_workbuf);
-+wuffs_gif__decoder__skip_frame(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_jpeg__decoder__swizzle_colorful(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__slice_u8 a_workbuf);
-+  uint8_t v_flags = 0;
-+  uint8_t v_lw = 0;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static bool
--wuffs_jpeg__decoder__top_left_quants_has_zero(
--    const wuffs_jpeg__decoder* self,
--    uint32_t a_q);
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_jpeg__decoder__load_mcu_blocks_for_single_component_smooth(
--    wuffs_jpeg__decoder* self,
--    uint32_t a_mx,
--    uint32_t a_my,
--    wuffs_base__slice_u8 a_workbuf,
--    uint32_t a_csel);
-+  uint32_t coro_susp_point = self->private_impl.p_skip_frame;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static uint32_t
--wuffs_jpeg__decoder__decode_mcu(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__slice_u8 a_workbuf,
--    uint32_t a_mx,
--    uint32_t a_my);
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_0 = *iop_a_src++;
-+      v_flags = t_0;
-+    }
-+    if (((uint8_t)(v_flags & 128u)) != 0u) {
-+      self->private_data.s_skip_frame.scratch = (((uint32_t)(3u)) << ((uint8_t)(1u + ((uint8_t)(v_flags & 7u)))));
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+      if (self->private_data.s_skip_frame.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+        self->private_data.s_skip_frame.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+        iop_a_src = io2_a_src;
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      iop_a_src += self->private_data.s_skip_frame.scratch;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_1 = *iop_a_src++;
-+      v_lw = t_1;
-+    }
-+    if (v_lw > 8u) {
-+      status = wuffs_base__make_status(wuffs_gif__error__bad_literal_width);
-+      goto exit;
-+    }
-+    if (a_src) {
-+      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+    }
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+    status = wuffs_gif__decoder__skip_blocks(self, a_src);
-+    if (a_src) {
-+      iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+    }
-+    if (status.repr) {
-+      goto suspend;
-+    }
-+    if (self->private_impl.f_quirks[0u]) {
-+      self->private_impl.f_delayed_num_decoded_frames = true;
-+    } else {
-+      wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
-+    }
-+    wuffs_gif__decoder__reset_gc(self);
-+    self->private_impl.f_call_sequence = 32u;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static uint32_t
--wuffs_jpeg__decoder__decode_mcu__choosy_default(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__slice_u8 a_workbuf,
--    uint32_t a_mx,
--    uint32_t a_my);
-+    goto ok;
-+    ok:
-+    self->private_impl.p_skip_frame = 0;
-+    goto exit;
-+  }
- 
--WUFFS_BASE__GENERATED_C_CODE
--static uint32_t
--wuffs_jpeg__decoder__decode_mcu_progressive_ac_high_bits(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__slice_u8 a_workbuf,
--    uint32_t a_mx,
--    uint32_t a_my);
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_skip_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
--WUFFS_BASE__GENERATED_C_CODE
--static uint32_t
--wuffs_jpeg__decoder__decode_mcu_progressive_ac_low_bit(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__slice_u8 a_workbuf,
--    uint32_t a_mx,
--    uint32_t a_my);
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
- 
--WUFFS_BASE__GENERATED_C_CODE
--static uint32_t
--wuffs_jpeg__decoder__decode_mcu_progressive_dc_high_bits(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__slice_u8 a_workbuf,
--    uint32_t a_mx,
--    uint32_t a_my);
-+  return status;
-+}
-+
-+// -------- func gif.decoder.decode_frame
- 
- WUFFS_BASE__GENERATED_C_CODE
--static uint32_t
--wuffs_jpeg__decoder__decode_mcu_progressive_dc_low_bit(
--    wuffs_jpeg__decoder* self,
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_gif__decoder__decode_frame(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-     wuffs_base__slice_u8 a_workbuf,
--    uint32_t a_mx,
--    uint32_t a_my);
--
--// ---------------- VTables
--
--const wuffs_base__image_decoder__func_ptrs
--wuffs_jpeg__decoder__func_ptrs_for__wuffs_base__image_decoder = {
--  (wuffs_base__status(*)(void*,
--      wuffs_base__pixel_buffer*,
--      wuffs_base__io_buffer*,
--      wuffs_base__pixel_blend,
--      wuffs_base__slice_u8,
--      wuffs_base__decode_frame_options*))(&wuffs_jpeg__decoder__decode_frame),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__frame_config*,
--      wuffs_base__io_buffer*))(&wuffs_jpeg__decoder__decode_frame_config),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__image_config*,
--      wuffs_base__io_buffer*))(&wuffs_jpeg__decoder__decode_image_config),
--  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_jpeg__decoder__frame_dirty_rect),
--  (uint64_t(*)(const void*,
--      uint32_t))(&wuffs_jpeg__decoder__get_quirk),
--  (uint64_t(*)(const void*))(&wuffs_jpeg__decoder__history_retain_length),
--  (uint32_t(*)(const void*))(&wuffs_jpeg__decoder__num_animation_loops),
--  (uint64_t(*)(const void*))(&wuffs_jpeg__decoder__num_decoded_frame_configs),
--  (uint64_t(*)(const void*))(&wuffs_jpeg__decoder__num_decoded_frames),
--  (wuffs_base__status(*)(void*,
--      uint64_t,
--      uint64_t))(&wuffs_jpeg__decoder__restart_frame),
--  (wuffs_base__status(*)(void*,
--      uint32_t,
--      uint64_t))(&wuffs_jpeg__decoder__set_quirk),
--  (wuffs_base__empty_struct(*)(void*,
--      uint32_t,
--      bool))(&wuffs_jpeg__decoder__set_report_metadata),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__io_buffer*,
--      wuffs_base__more_information*,
--      wuffs_base__io_buffer*))(&wuffs_jpeg__decoder__tell_me_more),
--  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_jpeg__decoder__workbuf_len),
--};
--
--// ---------------- Initializer Implementations
--
--wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_jpeg__decoder__initialize(
--    wuffs_jpeg__decoder* self,
--    size_t sizeof_star_self,
--    uint64_t wuffs_version,
--    uint32_t options){
-+    wuffs_base__decode_frame_options* a_opts) {
-   if (!self) {
-     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
--  if (sizeof(*self) != sizeof_star_self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-   }
--  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
--      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
--    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+  if (!a_dst || !a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-   }
--
--  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
--    // The whole point of this if-check is to detect an uninitialized *self.
--    // We disable the warning on GCC. Clang-5.0 does not have this warning.
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
--#endif
--    if (self->private_impl.magic != 0) {
--      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
--    }
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--  } else {
--    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
--      memset(self, 0, sizeof(*self));
--      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
--    } else {
--      memset(&(self->private_impl), 0, sizeof(self->private_impl));
--    }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 4)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-   }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  self->private_impl.choosy_decode_idct = &wuffs_jpeg__decoder__decode_idct__choosy_default;
--  self->private_impl.choosy_load_mcu_blocks_for_single_component = &wuffs_jpeg__decoder__load_mcu_blocks_for_single_component__choosy_default;
--  self->private_impl.choosy_decode_mcu = &wuffs_jpeg__decoder__decode_mcu__choosy_default;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--  self->private_impl.magic = WUFFS_BASE__MAGIC;
--  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
--      wuffs_base__image_decoder__vtable_name;
--  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
--      (const void*)(&wuffs_jpeg__decoder__func_ptrs_for__wuffs_base__image_decoder);
--  return wuffs_base__make_status(NULL);
--}
-+  uint32_t coro_susp_point = self->private_impl.p_decode_frame;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--wuffs_jpeg__decoder*
--wuffs_jpeg__decoder__alloc(void) {
--  wuffs_jpeg__decoder* x =
--      (wuffs_jpeg__decoder*)(calloc(sizeof(wuffs_jpeg__decoder), 1));
--  if (!x) {
--    return NULL;
--  }
--  if (wuffs_jpeg__decoder__initialize(
--      x, sizeof(wuffs_jpeg__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
--    free(x);
--    return NULL;
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_gif__decoder__do_decode_frame(self,
-+            a_dst,
-+            a_src,
-+            a_blend,
-+            a_workbuf,
-+            a_opts);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_gif__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+
-+    ok:
-+    self->private_impl.p_decode_frame = 0;
-+    goto exit;
-   }
--  return x;
--}
- 
--size_t
--sizeof__wuffs_jpeg__decoder(void) {
--  return sizeof(wuffs_jpeg__decoder);
--}
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 4 : 0;
- 
--// ---------------- Function Implementations
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
- 
--// -------- func jpeg.decoder.decode_idct
-+// -------- func gif.decoder.do_decode_frame
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_jpeg__decoder__decode_idct(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__slice_u8 a_dst_buffer,
--    uint64_t a_dst_stride,
--    uint32_t a_q) {
--  return (*self->private_impl.choosy_decode_idct)(self, a_dst_buffer, a_dst_stride, a_q);
--}
-+static wuffs_base__status
-+wuffs_gif__decoder__do_decode_frame(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_jpeg__decoder__decode_idct__choosy_default(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__slice_u8 a_dst_buffer,
--    uint64_t a_dst_stride,
--    uint32_t a_q) {
--  uint32_t v_bq0 = 0;
--  uint32_t v_bq2 = 0;
--  uint32_t v_bq4 = 0;
--  uint32_t v_bq6 = 0;
--  uint32_t v_ca = 0;
--  uint32_t v_cb2 = 0;
--  uint32_t v_cb6 = 0;
--  uint32_t v_ccp = 0;
--  uint32_t v_ccm = 0;
--  uint32_t v_cd0 = 0;
--  uint32_t v_cd1 = 0;
--  uint32_t v_cd2 = 0;
--  uint32_t v_cd3 = 0;
--  uint32_t v_bq1 = 0;
--  uint32_t v_bq3 = 0;
--  uint32_t v_bq5 = 0;
--  uint32_t v_bq7 = 0;
--  uint32_t v_ci51 = 0;
--  uint32_t v_ci53 = 0;
--  uint32_t v_ci71 = 0;
--  uint32_t v_ci73 = 0;
--  uint32_t v_cj = 0;
--  uint32_t v_ck1 = 0;
--  uint32_t v_ck3 = 0;
--  uint32_t v_ck5 = 0;
--  uint32_t v_ck7 = 0;
--  uint32_t v_cl51 = 0;
--  uint32_t v_cl73 = 0;
--  uint32_t v_in0 = 0;
--  uint32_t v_in2 = 0;
--  uint32_t v_in4 = 0;
--  uint32_t v_in6 = 0;
--  uint32_t v_ra = 0;
--  uint32_t v_rb2 = 0;
--  uint32_t v_rb6 = 0;
--  uint32_t v_rcp = 0;
--  uint32_t v_rcm = 0;
--  uint32_t v_rd0 = 0;
--  uint32_t v_rd1 = 0;
--  uint32_t v_rd2 = 0;
--  uint32_t v_rd3 = 0;
--  uint32_t v_in1 = 0;
--  uint32_t v_in3 = 0;
--  uint32_t v_in5 = 0;
--  uint32_t v_in7 = 0;
--  uint32_t v_ri51 = 0;
--  uint32_t v_ri53 = 0;
--  uint32_t v_ri71 = 0;
--  uint32_t v_ri73 = 0;
--  uint32_t v_rj = 0;
--  uint32_t v_rk1 = 0;
--  uint32_t v_rk3 = 0;
--  uint32_t v_rk5 = 0;
--  uint32_t v_rk7 = 0;
--  uint32_t v_rl51 = 0;
--  uint32_t v_rl73 = 0;
--  uint32_t v_intermediate[64] = {0};
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--  if (8u > a_dst_stride) {
--    return wuffs_base__make_empty_struct();
--  }
--  if (0u == (self->private_data.f_mcu_blocks[0u][8u] |
--      self->private_data.f_mcu_blocks[0u][16u] |
--      self->private_data.f_mcu_blocks[0u][24u] |
--      self->private_data.f_mcu_blocks[0u][32u] |
--      self->private_data.f_mcu_blocks[0u][40u] |
--      self->private_data.f_mcu_blocks[0u][48u] |
--      self->private_data.f_mcu_blocks[0u][56u])) {
--    v_intermediate[0u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][0u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][0u])))) << 2u));
--    v_intermediate[8u] = v_intermediate[0u];
--    v_intermediate[16u] = v_intermediate[0u];
--    v_intermediate[24u] = v_intermediate[0u];
--    v_intermediate[32u] = v_intermediate[0u];
--    v_intermediate[40u] = v_intermediate[0u];
--    v_intermediate[48u] = v_intermediate[0u];
--    v_intermediate[56u] = v_intermediate[0u];
--  } else {
--    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][16u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][16u]))));
--    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][48u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][48u]))));
--    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
--    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
--    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
--    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][0u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][0u]))));
--    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][32u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][32u]))));
--    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
--    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
--    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
--    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
--    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
--    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
--    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][8u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][8u]))));
--    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][24u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][24u]))));
--    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][40u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][40u]))));
--    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][56u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][56u]))));
--    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
--    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
--    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
--    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
--    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
--    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
--    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
--    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
--    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
--    v_ci51 *= 4294964100u;
--    v_ci53 *= 4294946301u;
--    v_ci71 *= 4294959923u;
--    v_ci73 *= 4294951227u;
--    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
--    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
--    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
--    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
--    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
--    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
--    v_intermediate[0u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
--    v_intermediate[56u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
--    v_intermediate[8u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
--    v_intermediate[48u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
--    v_intermediate[16u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
--    v_intermediate[40u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
--    v_intermediate[24u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
--    v_intermediate[32u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
-+    if (self->private_impl.f_call_sequence == 64u) {
-+    } else if (self->private_impl.f_call_sequence < 64u) {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      status = wuffs_gif__decoder__do_decode_frame_config(self, NULL, a_src);
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+    } else {
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-+    }
-+    if (self->private_impl.f_quirks[5u] && ((self->private_impl.f_frame_rect_x0 == self->private_impl.f_frame_rect_x1) || (self->private_impl.f_frame_rect_y0 == self->private_impl.f_frame_rect_y1))) {
-+      status = wuffs_base__make_status(wuffs_gif__error__bad_frame_size);
-+      goto exit;
-+    }
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+    status = wuffs_gif__decoder__decode_id_part1(self, a_dst, a_src, a_blend);
-+    if (status.repr) {
-+      goto suspend;
-+    }
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+    status = wuffs_gif__decoder__decode_id_part2(self, a_dst, a_src, a_workbuf);
-+    if (status.repr) {
-+      goto suspend;
-+    }
-+    wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
-+    wuffs_gif__decoder__reset_gc(self);
-+    self->private_impl.f_call_sequence = 32u;
-+
-+    ok:
-+    self->private_impl.p_do_decode_frame = 0;
-+    goto exit;
-   }
--  if (0u == (self->private_data.f_mcu_blocks[0u][9u] |
--      self->private_data.f_mcu_blocks[0u][17u] |
--      self->private_data.f_mcu_blocks[0u][25u] |
--      self->private_data.f_mcu_blocks[0u][33u] |
--      self->private_data.f_mcu_blocks[0u][41u] |
--      self->private_data.f_mcu_blocks[0u][49u] |
--      self->private_data.f_mcu_blocks[0u][57u])) {
--    v_intermediate[1u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][1u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][1u])))) << 2u));
--    v_intermediate[9u] = v_intermediate[1u];
--    v_intermediate[17u] = v_intermediate[1u];
--    v_intermediate[25u] = v_intermediate[1u];
--    v_intermediate[33u] = v_intermediate[1u];
--    v_intermediate[41u] = v_intermediate[1u];
--    v_intermediate[49u] = v_intermediate[1u];
--    v_intermediate[57u] = v_intermediate[1u];
--  } else {
--    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][17u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][17u]))));
--    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][49u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][49u]))));
--    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
--    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
--    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
--    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][1u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][1u]))));
--    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][33u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][33u]))));
--    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
--    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
--    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
--    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
--    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
--    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
--    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][9u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][9u]))));
--    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][25u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][25u]))));
--    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][41u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][41u]))));
--    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][57u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][57u]))));
--    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
--    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
--    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
--    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
--    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
--    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
--    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
--    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
--    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
--    v_ci51 *= 4294964100u;
--    v_ci53 *= 4294946301u;
--    v_ci71 *= 4294959923u;
--    v_ci73 *= 4294951227u;
--    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
--    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
--    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
--    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
--    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
--    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
--    v_intermediate[1u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
--    v_intermediate[57u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
--    v_intermediate[9u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
--    v_intermediate[49u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
--    v_intermediate[17u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
--    v_intermediate[41u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
--    v_intermediate[25u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
--    v_intermediate[33u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  return status;
-+}
-+
-+// -------- func gif.decoder.reset_gc
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_gif__decoder__reset_gc(
-+    wuffs_gif__decoder* self) {
-+  self->private_impl.f_gc_has_transparent_index = false;
-+  self->private_impl.f_gc_transparent_index = 0u;
-+  self->private_impl.f_gc_disposal = 0u;
-+  self->private_impl.f_gc_duration = 0u;
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+// -------- func gif.decoder.decode_up_to_id_part1
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_gif__decoder__decode_up_to_id_part1(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_block_type = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-   }
--  if (0u == (self->private_data.f_mcu_blocks[0u][10u] |
--      self->private_data.f_mcu_blocks[0u][18u] |
--      self->private_data.f_mcu_blocks[0u][26u] |
--      self->private_data.f_mcu_blocks[0u][34u] |
--      self->private_data.f_mcu_blocks[0u][42u] |
--      self->private_data.f_mcu_blocks[0u][50u] |
--      self->private_data.f_mcu_blocks[0u][58u])) {
--    v_intermediate[2u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][2u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][2u])))) << 2u));
--    v_intermediate[10u] = v_intermediate[2u];
--    v_intermediate[18u] = v_intermediate[2u];
--    v_intermediate[26u] = v_intermediate[2u];
--    v_intermediate[34u] = v_intermediate[2u];
--    v_intermediate[42u] = v_intermediate[2u];
--    v_intermediate[50u] = v_intermediate[2u];
--    v_intermediate[58u] = v_intermediate[2u];
--  } else {
--    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][18u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][18u]))));
--    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][50u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][50u]))));
--    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
--    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
--    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
--    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][2u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][2u]))));
--    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][34u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][34u]))));
--    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
--    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
--    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
--    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
--    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
--    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
--    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][10u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][10u]))));
--    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][26u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][26u]))));
--    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][42u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][42u]))));
--    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][58u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][58u]))));
--    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
--    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
--    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
--    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
--    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
--    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
--    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
--    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
--    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
--    v_ci51 *= 4294964100u;
--    v_ci53 *= 4294946301u;
--    v_ci71 *= 4294959923u;
--    v_ci73 *= 4294951227u;
--    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
--    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
--    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
--    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
--    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
--    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
--    v_intermediate[2u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
--    v_intermediate[58u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
--    v_intermediate[10u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
--    v_intermediate[50u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
--    v_intermediate[18u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
--    v_intermediate[42u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
--    v_intermediate[26u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
--    v_intermediate[34u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_up_to_id_part1;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if ((self->private_impl.f_frame_config_io_position == 0u) || (self->private_impl.f_num_decoded_frame_configs_value > 0u)) {
-+      self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
-+    }
-+    while (true) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_0 = *iop_a_src++;
-+        v_block_type = t_0;
-+      }
-+      if (v_block_type == 33u) {
-+        if (a_src) {
-+          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+        }
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+        status = wuffs_gif__decoder__decode_extension(self, a_src);
-+        if (a_src) {
-+          iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+        }
-+        if (status.repr) {
-+          goto suspend;
-+        }
-+      } else if (v_block_type == 44u) {
-+        if (self->private_impl.f_delayed_num_decoded_frames) {
-+          self->private_impl.f_delayed_num_decoded_frames = false;
-+          wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
-+        }
-+        if (a_src) {
-+          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+        }
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+        status = wuffs_gif__decoder__decode_id_part0(self, a_src);
-+        if (a_src) {
-+          iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+        }
-+        if (status.repr) {
-+          goto suspend;
-+        }
-+        break;
-+      } else {
-+        if (self->private_impl.f_delayed_num_decoded_frames) {
-+          self->private_impl.f_delayed_num_decoded_frames = false;
-+          wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
-+        }
-+        self->private_impl.f_call_sequence = 96u;
-+        break;
-+      }
-+    }
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_decode_up_to_id_part1 = 0;
-+    goto exit;
-   }
--  if (0u == (self->private_data.f_mcu_blocks[0u][11u] |
--      self->private_data.f_mcu_blocks[0u][19u] |
--      self->private_data.f_mcu_blocks[0u][27u] |
--      self->private_data.f_mcu_blocks[0u][35u] |
--      self->private_data.f_mcu_blocks[0u][43u] |
--      self->private_data.f_mcu_blocks[0u][51u] |
--      self->private_data.f_mcu_blocks[0u][59u])) {
--    v_intermediate[3u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][3u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][3u])))) << 2u));
--    v_intermediate[11u] = v_intermediate[3u];
--    v_intermediate[19u] = v_intermediate[3u];
--    v_intermediate[27u] = v_intermediate[3u];
--    v_intermediate[35u] = v_intermediate[3u];
--    v_intermediate[43u] = v_intermediate[3u];
--    v_intermediate[51u] = v_intermediate[3u];
--    v_intermediate[59u] = v_intermediate[3u];
--  } else {
--    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][19u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][19u]))));
--    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][51u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][51u]))));
--    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
--    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
--    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
--    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][3u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][3u]))));
--    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][35u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][35u]))));
--    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
--    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
--    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
--    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
--    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
--    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
--    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][11u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][11u]))));
--    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][27u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][27u]))));
--    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][43u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][43u]))));
--    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][59u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][59u]))));
--    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
--    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
--    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
--    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
--    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
--    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
--    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
--    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
--    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
--    v_ci51 *= 4294964100u;
--    v_ci53 *= 4294946301u;
--    v_ci71 *= 4294959923u;
--    v_ci73 *= 4294951227u;
--    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
--    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
--    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
--    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
--    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
--    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
--    v_intermediate[3u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
--    v_intermediate[59u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
--    v_intermediate[11u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
--    v_intermediate[51u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
--    v_intermediate[19u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
--    v_intermediate[43u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
--    v_intermediate[27u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
--    v_intermediate[35u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_up_to_id_part1 = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
--  if (0u == (self->private_data.f_mcu_blocks[0u][12u] |
--      self->private_data.f_mcu_blocks[0u][20u] |
--      self->private_data.f_mcu_blocks[0u][28u] |
--      self->private_data.f_mcu_blocks[0u][36u] |
--      self->private_data.f_mcu_blocks[0u][44u] |
--      self->private_data.f_mcu_blocks[0u][52u] |
--      self->private_data.f_mcu_blocks[0u][60u])) {
--    v_intermediate[4u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][4u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][4u])))) << 2u));
--    v_intermediate[12u] = v_intermediate[4u];
--    v_intermediate[20u] = v_intermediate[4u];
--    v_intermediate[28u] = v_intermediate[4u];
--    v_intermediate[36u] = v_intermediate[4u];
--    v_intermediate[44u] = v_intermediate[4u];
--    v_intermediate[52u] = v_intermediate[4u];
--    v_intermediate[60u] = v_intermediate[4u];
--  } else {
--    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][20u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][20u]))));
--    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][52u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][52u]))));
--    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
--    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
--    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
--    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][4u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][4u]))));
--    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][36u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][36u]))));
--    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
--    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
--    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
--    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
--    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
--    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
--    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][12u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][12u]))));
--    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][28u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][28u]))));
--    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][44u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][44u]))));
--    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][60u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][60u]))));
--    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
--    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
--    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
--    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
--    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
--    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
--    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
--    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
--    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
--    v_ci51 *= 4294964100u;
--    v_ci53 *= 4294946301u;
--    v_ci71 *= 4294959923u;
--    v_ci73 *= 4294951227u;
--    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
--    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
--    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
--    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
--    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
--    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
--    v_intermediate[4u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
--    v_intermediate[60u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
--    v_intermediate[12u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
--    v_intermediate[52u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
--    v_intermediate[20u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
--    v_intermediate[44u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
--    v_intermediate[28u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
--    v_intermediate[36u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
-+
-+  return status;
-+}
-+
-+// -------- func gif.decoder.decode_header
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_gif__decoder__decode_header(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint64_t v_c48 = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-   }
--  if (0u == (self->private_data.f_mcu_blocks[0u][13u] |
--      self->private_data.f_mcu_blocks[0u][21u] |
--      self->private_data.f_mcu_blocks[0u][29u] |
--      self->private_data.f_mcu_blocks[0u][37u] |
--      self->private_data.f_mcu_blocks[0u][45u] |
--      self->private_data.f_mcu_blocks[0u][53u] |
--      self->private_data.f_mcu_blocks[0u][61u])) {
--    v_intermediate[5u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][5u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][5u])))) << 2u));
--    v_intermediate[13u] = v_intermediate[5u];
--    v_intermediate[21u] = v_intermediate[5u];
--    v_intermediate[29u] = v_intermediate[5u];
--    v_intermediate[37u] = v_intermediate[5u];
--    v_intermediate[45u] = v_intermediate[5u];
--    v_intermediate[53u] = v_intermediate[5u];
--    v_intermediate[61u] = v_intermediate[5u];
--  } else {
--    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][21u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][21u]))));
--    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][53u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][53u]))));
--    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
--    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
--    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
--    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][5u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][5u]))));
--    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][37u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][37u]))));
--    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
--    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
--    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
--    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
--    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
--    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
--    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][13u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][13u]))));
--    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][29u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][29u]))));
--    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][45u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][45u]))));
--    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][61u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][61u]))));
--    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
--    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
--    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
--    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
--    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
--    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
--    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
--    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
--    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
--    v_ci51 *= 4294964100u;
--    v_ci53 *= 4294946301u;
--    v_ci71 *= 4294959923u;
--    v_ci73 *= 4294951227u;
--    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
--    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
--    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
--    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
--    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
--    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
--    v_intermediate[5u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
--    v_intermediate[61u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
--    v_intermediate[13u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
--    v_intermediate[53u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
--    v_intermediate[21u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
--    v_intermediate[45u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
--    v_intermediate[29u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
--    v_intermediate[37u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_header;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      uint64_t t_0;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 6)) {
-+        t_0 = ((uint64_t)(wuffs_base__peek_u48le__no_bounds_check(iop_a_src)));
-+        iop_a_src += 6;
-+      } else {
-+        self->private_data.s_decode_header.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_header.scratch;
-+          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
-+          *scratch <<= 8;
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
-+          if (num_bits_0 == 40) {
-+            t_0 = ((uint64_t)(*scratch));
-+            break;
-+          }
-+          num_bits_0 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_0)) << 56;
-+        }
-+      }
-+      v_c48 = t_0;
-+    }
-+    if ((v_c48 != 106889795225927u) && (v_c48 != 106898385160519u)) {
-+      status = wuffs_base__make_status(wuffs_gif__error__bad_header);
-+      goto exit;
-+    }
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_decode_header = 0;
-+    goto exit;
-   }
--  if (0u == (self->private_data.f_mcu_blocks[0u][14u] |
--      self->private_data.f_mcu_blocks[0u][22u] |
--      self->private_data.f_mcu_blocks[0u][30u] |
--      self->private_data.f_mcu_blocks[0u][38u] |
--      self->private_data.f_mcu_blocks[0u][46u] |
--      self->private_data.f_mcu_blocks[0u][54u] |
--      self->private_data.f_mcu_blocks[0u][62u])) {
--    v_intermediate[6u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][6u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][6u])))) << 2u));
--    v_intermediate[14u] = v_intermediate[6u];
--    v_intermediate[22u] = v_intermediate[6u];
--    v_intermediate[30u] = v_intermediate[6u];
--    v_intermediate[38u] = v_intermediate[6u];
--    v_intermediate[46u] = v_intermediate[6u];
--    v_intermediate[54u] = v_intermediate[6u];
--    v_intermediate[62u] = v_intermediate[6u];
--  } else {
--    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][22u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][22u]))));
--    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][54u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][54u]))));
--    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
--    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
--    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
--    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][6u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][6u]))));
--    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][38u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][38u]))));
--    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
--    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
--    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
--    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
--    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
--    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
--    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][14u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][14u]))));
--    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][30u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][30u]))));
--    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][46u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][46u]))));
--    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][62u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][62u]))));
--    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
--    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
--    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
--    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
--    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
--    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
--    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
--    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
--    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
--    v_ci51 *= 4294964100u;
--    v_ci53 *= 4294946301u;
--    v_ci71 *= 4294959923u;
--    v_ci73 *= 4294951227u;
--    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
--    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
--    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
--    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
--    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
--    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
--    v_intermediate[6u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
--    v_intermediate[62u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
--    v_intermediate[14u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
--    v_intermediate[54u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
--    v_intermediate[22u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
--    v_intermediate[46u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
--    v_intermediate[30u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
--    v_intermediate[38u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_header = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
--  if (0u == (self->private_data.f_mcu_blocks[0u][15u] |
--      self->private_data.f_mcu_blocks[0u][23u] |
--      self->private_data.f_mcu_blocks[0u][31u] |
--      self->private_data.f_mcu_blocks[0u][39u] |
--      self->private_data.f_mcu_blocks[0u][47u] |
--      self->private_data.f_mcu_blocks[0u][55u] |
--      self->private_data.f_mcu_blocks[0u][63u])) {
--    v_intermediate[7u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][7u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][7u])))) << 2u));
--    v_intermediate[15u] = v_intermediate[7u];
--    v_intermediate[23u] = v_intermediate[7u];
--    v_intermediate[31u] = v_intermediate[7u];
--    v_intermediate[39u] = v_intermediate[7u];
--    v_intermediate[47u] = v_intermediate[7u];
--    v_intermediate[55u] = v_intermediate[7u];
--    v_intermediate[63u] = v_intermediate[7u];
--  } else {
--    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][23u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][23u]))));
--    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][55u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][55u]))));
--    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
--    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
--    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
--    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][7u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][7u]))));
--    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][39u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][39u]))));
--    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
--    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
--    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
--    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
--    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
--    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
--    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][15u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][15u]))));
--    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][31u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][31u]))));
--    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][47u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][47u]))));
--    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][63u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][63u]))));
--    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
--    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
--    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
--    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
--    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
--    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
--    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
--    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
--    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
--    v_ci51 *= 4294964100u;
--    v_ci53 *= 4294946301u;
--    v_ci71 *= 4294959923u;
--    v_ci73 *= 4294951227u;
--    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
--    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
--    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
--    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
--    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
--    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
--    v_intermediate[7u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
--    v_intermediate[63u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
--    v_intermediate[15u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
--    v_intermediate[55u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
--    v_intermediate[23u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
--    v_intermediate[47u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
--    v_intermediate[31u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
--    v_intermediate[39u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
-+
-+  return status;
-+}
-+
-+// -------- func gif.decoder.decode_lsd
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_gif__decoder__decode_lsd(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_flags = 0;
-+  uint8_t v_background_color_index = 0;
-+  uint32_t v_num_palette_entries = 0;
-+  uint32_t v_i = 0;
-+  uint32_t v_j = 0;
-+  uint32_t v_argb = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-   }
--  if (0u == (v_intermediate[1u] |
--      v_intermediate[2u] |
--      v_intermediate[3u] |
--      v_intermediate[4u] |
--      v_intermediate[5u] |
--      v_intermediate[6u] |
--      v_intermediate[7u])) {
--    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
--      return wuffs_base__make_empty_struct();
--    }
--    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[0u] + 16u)) >> 5u) & 1023u)];
--    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
--  } else {
--    v_in2 = v_intermediate[2u];
--    v_in6 = v_intermediate[6u];
--    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
--    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
--    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
--    v_in0 = v_intermediate[0u];
--    v_in4 = v_intermediate[4u];
--    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
--    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
--    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
--    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
--    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
--    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
--    v_in1 = v_intermediate[1u];
--    v_in3 = v_intermediate[3u];
--    v_in5 = v_intermediate[5u];
--    v_in7 = v_intermediate[7u];
--    v_ri51 = ((uint32_t)(v_in5 + v_in1));
--    v_ri53 = ((uint32_t)(v_in5 + v_in3));
--    v_ri71 = ((uint32_t)(v_in7 + v_in1));
--    v_ri73 = ((uint32_t)(v_in7 + v_in3));
--    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
--    v_rk1 = ((uint32_t)(v_in1 * 12299u));
--    v_rk3 = ((uint32_t)(v_in3 * 25172u));
--    v_rk5 = ((uint32_t)(v_in5 * 16819u));
--    v_rk7 = ((uint32_t)(v_in7 * 2446u));
--    v_ri51 *= 4294964100u;
--    v_ri53 *= 4294946301u;
--    v_ri71 *= 4294959923u;
--    v_ri73 *= 4294951227u;
--    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
--    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
--    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
--    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
--    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
--    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
--    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
--      return wuffs_base__make_empty_struct();
--    }
--    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_lsd;
-+  if (coro_susp_point) {
-+    v_flags = self->private_data.s_decode_lsd.v_flags;
-+    v_background_color_index = self->private_data.s_decode_lsd.v_background_color_index;
-+    v_num_palette_entries = self->private_data.s_decode_lsd.v_num_palette_entries;
-+    v_i = self->private_data.s_decode_lsd.v_i;
-   }
--  if (0u == (v_intermediate[9u] |
--      v_intermediate[10u] |
--      v_intermediate[11u] |
--      v_intermediate[12u] |
--      v_intermediate[13u] |
--      v_intermediate[14u] |
--      v_intermediate[15u])) {
--    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
--      return wuffs_base__make_empty_struct();
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      uint32_t t_0;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+        t_0 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-+        iop_a_src += 2;
-+      } else {
-+        self->private_data.s_decode_lsd.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_lsd.scratch;
-+          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
-+          *scratch <<= 8;
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
-+          if (num_bits_0 == 8) {
-+            t_0 = ((uint32_t)(*scratch));
-+            break;
-+          }
-+          num_bits_0 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_0)) << 56;
-+        }
-+      }
-+      self->private_impl.f_width = t_0;
-     }
--    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[8u] + 16u)) >> 5u) & 1023u)];
--    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
--  } else {
--    v_in2 = v_intermediate[10u];
--    v_in6 = v_intermediate[14u];
--    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
--    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
--    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
--    v_in0 = v_intermediate[8u];
--    v_in4 = v_intermediate[12u];
--    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
--    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
--    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
--    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
--    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
--    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
--    v_in1 = v_intermediate[9u];
--    v_in3 = v_intermediate[11u];
--    v_in5 = v_intermediate[13u];
--    v_in7 = v_intermediate[15u];
--    v_ri51 = ((uint32_t)(v_in5 + v_in1));
--    v_ri53 = ((uint32_t)(v_in5 + v_in3));
--    v_ri71 = ((uint32_t)(v_in7 + v_in1));
--    v_ri73 = ((uint32_t)(v_in7 + v_in3));
--    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
--    v_rk1 = ((uint32_t)(v_in1 * 12299u));
--    v_rk3 = ((uint32_t)(v_in3 * 25172u));
--    v_rk5 = ((uint32_t)(v_in5 * 16819u));
--    v_rk7 = ((uint32_t)(v_in7 * 2446u));
--    v_ri51 *= 4294964100u;
--    v_ri53 *= 4294946301u;
--    v_ri71 *= 4294959923u;
--    v_ri73 *= 4294951227u;
--    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
--    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
--    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
--    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
--    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
--    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
--    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
--      return wuffs_base__make_empty_struct();
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+      uint32_t t_1;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+        t_1 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-+        iop_a_src += 2;
-+      } else {
-+        self->private_data.s_decode_lsd.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_lsd.scratch;
-+          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
-+          *scratch <<= 8;
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
-+          if (num_bits_1 == 8) {
-+            t_1 = ((uint32_t)(*scratch));
-+            break;
-+          }
-+          num_bits_1 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_1)) << 56;
-+        }
-+      }
-+      self->private_impl.f_height = t_1;
-     }
--    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
--  }
--  if (0u == (v_intermediate[17u] |
--      v_intermediate[18u] |
--      v_intermediate[19u] |
--      v_intermediate[20u] |
--      v_intermediate[21u] |
--      v_intermediate[22u] |
--      v_intermediate[23u])) {
--    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
--      return wuffs_base__make_empty_struct();
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_2 = *iop_a_src++;
-+      v_flags = t_2;
-     }
--    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[16u] + 16u)) >> 5u) & 1023u)];
--    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
--  } else {
--    v_in2 = v_intermediate[18u];
--    v_in6 = v_intermediate[22u];
--    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
--    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
--    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
--    v_in0 = v_intermediate[16u];
--    v_in4 = v_intermediate[20u];
--    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
--    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
--    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
--    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
--    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
--    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
--    v_in1 = v_intermediate[17u];
--    v_in3 = v_intermediate[19u];
--    v_in5 = v_intermediate[21u];
--    v_in7 = v_intermediate[23u];
--    v_ri51 = ((uint32_t)(v_in5 + v_in1));
--    v_ri53 = ((uint32_t)(v_in5 + v_in3));
--    v_ri71 = ((uint32_t)(v_in7 + v_in1));
--    v_ri73 = ((uint32_t)(v_in7 + v_in3));
--    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
--    v_rk1 = ((uint32_t)(v_in1 * 12299u));
--    v_rk3 = ((uint32_t)(v_in3 * 25172u));
--    v_rk5 = ((uint32_t)(v_in5 * 16819u));
--    v_rk7 = ((uint32_t)(v_in7 * 2446u));
--    v_ri51 *= 4294964100u;
--    v_ri53 *= 4294946301u;
--    v_ri71 *= 4294959923u;
--    v_ri73 *= 4294951227u;
--    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
--    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
--    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
--    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
--    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
--    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
--    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
--      return wuffs_base__make_empty_struct();
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_3 = *iop_a_src++;
-+      v_background_color_index = t_3;
-     }
--    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
--  }
--  if (0u == (v_intermediate[25u] |
--      v_intermediate[26u] |
--      v_intermediate[27u] |
--      v_intermediate[28u] |
--      v_intermediate[29u] |
--      v_intermediate[30u] |
--      v_intermediate[31u])) {
--    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
--      return wuffs_base__make_empty_struct();
--    }
--    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[24u] + 16u)) >> 5u) & 1023u)];
--    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
--  } else {
--    v_in2 = v_intermediate[26u];
--    v_in6 = v_intermediate[30u];
--    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
--    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
--    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
--    v_in0 = v_intermediate[24u];
--    v_in4 = v_intermediate[28u];
--    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
--    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
--    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
--    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
--    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
--    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
--    v_in1 = v_intermediate[25u];
--    v_in3 = v_intermediate[27u];
--    v_in5 = v_intermediate[29u];
--    v_in7 = v_intermediate[31u];
--    v_ri51 = ((uint32_t)(v_in5 + v_in1));
--    v_ri53 = ((uint32_t)(v_in5 + v_in3));
--    v_ri71 = ((uint32_t)(v_in7 + v_in1));
--    v_ri73 = ((uint32_t)(v_in7 + v_in3));
--    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
--    v_rk1 = ((uint32_t)(v_in1 * 12299u));
--    v_rk3 = ((uint32_t)(v_in3 * 25172u));
--    v_rk5 = ((uint32_t)(v_in5 * 16819u));
--    v_rk7 = ((uint32_t)(v_in7 * 2446u));
--    v_ri51 *= 4294964100u;
--    v_ri53 *= 4294946301u;
--    v_ri71 *= 4294959923u;
--    v_ri73 *= 4294951227u;
--    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
--    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
--    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
--    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
--    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
--    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
--    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
--      return wuffs_base__make_empty_struct();
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+    if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+      goto suspend;
-     }
--    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
--  }
--  if (0u == (v_intermediate[33u] |
--      v_intermediate[34u] |
--      v_intermediate[35u] |
--      v_intermediate[36u] |
--      v_intermediate[37u] |
--      v_intermediate[38u] |
--      v_intermediate[39u])) {
--    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
--      return wuffs_base__make_empty_struct();
-+    iop_a_src++;
-+    v_i = 0u;
-+    self->private_impl.f_has_global_palette = (((uint8_t)(v_flags & 128u)) != 0u);
-+    if (self->private_impl.f_has_global_palette) {
-+      v_num_palette_entries = (((uint32_t)(1u)) << ((uint8_t)(1u + ((uint8_t)(v_flags & 7u)))));
-+      while (v_i < v_num_palette_entries) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+          uint32_t t_4;
-+          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
-+            t_4 = ((uint32_t)(wuffs_base__peek_u24be__no_bounds_check(iop_a_src)));
-+            iop_a_src += 3;
-+          } else {
-+            self->private_data.s_decode_lsd.scratch = 0;
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+            while (true) {
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint64_t* scratch = &self->private_data.s_decode_lsd.scratch;
-+              uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFFu));
-+              *scratch >>= 8;
-+              *scratch <<= 8;
-+              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4);
-+              if (num_bits_4 == 16) {
-+                t_4 = ((uint32_t)(*scratch >> 40));
-+                break;
-+              }
-+              num_bits_4 += 8u;
-+              *scratch |= ((uint64_t)(num_bits_4));
-+            }
-+          }
-+          v_argb = t_4;
-+        }
-+        v_argb |= 4278190080u;
-+        self->private_data.f_palettes[0u][((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u)));
-+        self->private_data.f_palettes[0u][((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u)));
-+        self->private_data.f_palettes[0u][((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u)));
-+        self->private_data.f_palettes[0u][((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u)));
-+        v_i += 1u;
-+      }
-+      if (self->private_impl.f_quirks[2u]) {
-+        if ((v_background_color_index != 0u) && (((uint32_t)(v_background_color_index)) < v_num_palette_entries)) {
-+          v_j = (4u * ((uint32_t)(v_background_color_index)));
-+          self->private_impl.f_background_color_u32_argb_premul = ((((uint32_t)(self->private_data.f_palettes[0u][(v_j + 0u)])) << 0u) |
-+              (((uint32_t)(self->private_data.f_palettes[0u][(v_j + 1u)])) << 8u) |
-+              (((uint32_t)(self->private_data.f_palettes[0u][(v_j + 2u)])) << 16u) |
-+              (((uint32_t)(self->private_data.f_palettes[0u][(v_j + 3u)])) << 24u));
-+        } else {
-+          self->private_impl.f_background_color_u32_argb_premul = 77u;
-+        }
-+      }
-     }
--    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[32u] + 16u)) >> 5u) & 1023u)];
--    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
--  } else {
--    v_in2 = v_intermediate[34u];
--    v_in6 = v_intermediate[38u];
--    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
--    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
--    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
--    v_in0 = v_intermediate[32u];
--    v_in4 = v_intermediate[36u];
--    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
--    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
--    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
--    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
--    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
--    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
--    v_in1 = v_intermediate[33u];
--    v_in3 = v_intermediate[35u];
--    v_in5 = v_intermediate[37u];
--    v_in7 = v_intermediate[39u];
--    v_ri51 = ((uint32_t)(v_in5 + v_in1));
--    v_ri53 = ((uint32_t)(v_in5 + v_in3));
--    v_ri71 = ((uint32_t)(v_in7 + v_in1));
--    v_ri73 = ((uint32_t)(v_in7 + v_in3));
--    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
--    v_rk1 = ((uint32_t)(v_in1 * 12299u));
--    v_rk3 = ((uint32_t)(v_in3 * 25172u));
--    v_rk5 = ((uint32_t)(v_in5 * 16819u));
--    v_rk7 = ((uint32_t)(v_in7 * 2446u));
--    v_ri51 *= 4294964100u;
--    v_ri53 *= 4294946301u;
--    v_ri71 *= 4294959923u;
--    v_ri73 *= 4294951227u;
--    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
--    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
--    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
--    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
--    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
--    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
--    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
--      return wuffs_base__make_empty_struct();
-+    while (v_i < 256u) {
-+      self->private_data.f_palettes[0u][((4u * v_i) + 0u)] = 0u;
-+      self->private_data.f_palettes[0u][((4u * v_i) + 1u)] = 0u;
-+      self->private_data.f_palettes[0u][((4u * v_i) + 2u)] = 0u;
-+      self->private_data.f_palettes[0u][((4u * v_i) + 3u)] = 255u;
-+      v_i += 1u;
-     }
--    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_decode_lsd = 0;
-+    goto exit;
-   }
--  if (0u == (v_intermediate[41u] |
--      v_intermediate[42u] |
--      v_intermediate[43u] |
--      v_intermediate[44u] |
--      v_intermediate[45u] |
--      v_intermediate[46u] |
--      v_intermediate[47u])) {
--    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
--      return wuffs_base__make_empty_struct();
--    }
--    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[40u] + 16u)) >> 5u) & 1023u)];
--    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
--  } else {
--    v_in2 = v_intermediate[42u];
--    v_in6 = v_intermediate[46u];
--    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
--    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
--    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
--    v_in0 = v_intermediate[40u];
--    v_in4 = v_intermediate[44u];
--    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
--    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
--    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
--    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
--    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
--    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
--    v_in1 = v_intermediate[41u];
--    v_in3 = v_intermediate[43u];
--    v_in5 = v_intermediate[45u];
--    v_in7 = v_intermediate[47u];
--    v_ri51 = ((uint32_t)(v_in5 + v_in1));
--    v_ri53 = ((uint32_t)(v_in5 + v_in3));
--    v_ri71 = ((uint32_t)(v_in7 + v_in1));
--    v_ri73 = ((uint32_t)(v_in7 + v_in3));
--    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
--    v_rk1 = ((uint32_t)(v_in1 * 12299u));
--    v_rk3 = ((uint32_t)(v_in3 * 25172u));
--    v_rk5 = ((uint32_t)(v_in5 * 16819u));
--    v_rk7 = ((uint32_t)(v_in7 * 2446u));
--    v_ri51 *= 4294964100u;
--    v_ri53 *= 4294946301u;
--    v_ri71 *= 4294959923u;
--    v_ri73 *= 4294951227u;
--    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
--    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
--    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
--    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
--    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
--    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
--    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
--      return wuffs_base__make_empty_struct();
--    }
--    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_lsd = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_lsd.v_flags = v_flags;
-+  self->private_data.s_decode_lsd.v_background_color_index = v_background_color_index;
-+  self->private_data.s_decode_lsd.v_num_palette_entries = v_num_palette_entries;
-+  self->private_data.s_decode_lsd.v_i = v_i;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
--  if (0u == (v_intermediate[49u] |
--      v_intermediate[50u] |
--      v_intermediate[51u] |
--      v_intermediate[52u] |
--      v_intermediate[53u] |
--      v_intermediate[54u] |
--      v_intermediate[55u])) {
--    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
--      return wuffs_base__make_empty_struct();
-+
-+  return status;
-+}
-+
-+// -------- func gif.decoder.decode_extension
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_gif__decoder__decode_extension(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_label = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_extension;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_0 = *iop_a_src++;
-+      v_label = t_0;
-     }
--    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[48u] + 16u)) >> 5u) & 1023u)];
--    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
--  } else {
--    v_in2 = v_intermediate[50u];
--    v_in6 = v_intermediate[54u];
--    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
--    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
--    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
--    v_in0 = v_intermediate[48u];
--    v_in4 = v_intermediate[52u];
--    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
--    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
--    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
--    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
--    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
--    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
--    v_in1 = v_intermediate[49u];
--    v_in3 = v_intermediate[51u];
--    v_in5 = v_intermediate[53u];
--    v_in7 = v_intermediate[55u];
--    v_ri51 = ((uint32_t)(v_in5 + v_in1));
--    v_ri53 = ((uint32_t)(v_in5 + v_in3));
--    v_ri71 = ((uint32_t)(v_in7 + v_in1));
--    v_ri73 = ((uint32_t)(v_in7 + v_in3));
--    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
--    v_rk1 = ((uint32_t)(v_in1 * 12299u));
--    v_rk3 = ((uint32_t)(v_in3 * 25172u));
--    v_rk5 = ((uint32_t)(v_in5 * 16819u));
--    v_rk7 = ((uint32_t)(v_in7 * 2446u));
--    v_ri51 *= 4294964100u;
--    v_ri53 *= 4294946301u;
--    v_ri71 *= 4294959923u;
--    v_ri73 *= 4294951227u;
--    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
--    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
--    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
--    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
--    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
--    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
--    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
--      return wuffs_base__make_empty_struct();
-+    if (v_label == 249u) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+      status = wuffs_gif__decoder__decode_gc(self, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+      status = wuffs_base__make_status(NULL);
-+      goto ok;
-+    } else if (v_label == 255u) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+      status = wuffs_gif__decoder__decode_ae(self, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+      status = wuffs_base__make_status(NULL);
-+      goto ok;
-     }
--    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
--  }
--  if (0u == (v_intermediate[57u] |
--      v_intermediate[58u] |
--      v_intermediate[59u] |
--      v_intermediate[60u] |
--      v_intermediate[61u] |
--      v_intermediate[62u] |
--      v_intermediate[63u])) {
--    if (8u > ((uint64_t)(a_dst_buffer.len))) {
--      return wuffs_base__make_empty_struct();
-+    if (a_src) {
-+      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-     }
--    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[56u] + 16u)) >> 5u) & 1023u)];
--    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
--    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
--  } else {
--    v_in2 = v_intermediate[58u];
--    v_in6 = v_intermediate[62u];
--    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
--    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
--    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
--    v_in0 = v_intermediate[56u];
--    v_in4 = v_intermediate[60u];
--    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
--    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
--    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
--    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
--    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
--    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
--    v_in1 = v_intermediate[57u];
--    v_in3 = v_intermediate[59u];
--    v_in5 = v_intermediate[61u];
--    v_in7 = v_intermediate[63u];
--    v_ri51 = ((uint32_t)(v_in5 + v_in1));
--    v_ri53 = ((uint32_t)(v_in5 + v_in3));
--    v_ri71 = ((uint32_t)(v_in7 + v_in1));
--    v_ri73 = ((uint32_t)(v_in7 + v_in3));
--    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
--    v_rk1 = ((uint32_t)(v_in1 * 12299u));
--    v_rk3 = ((uint32_t)(v_in3 * 25172u));
--    v_rk5 = ((uint32_t)(v_in5 * 16819u));
--    v_rk7 = ((uint32_t)(v_in7 * 2446u));
--    v_ri51 *= 4294964100u;
--    v_ri53 *= 4294946301u;
--    v_ri71 *= 4294959923u;
--    v_ri73 *= 4294951227u;
--    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
--    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
--    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
--    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
--    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
--    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
--    if (8u > ((uint64_t)(a_dst_buffer.len))) {
--      return wuffs_base__make_empty_struct();
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+    status = wuffs_gif__decoder__skip_blocks(self, a_src);
-+    if (a_src) {
-+      iop_a_src = a_src->data.ptr + a_src->meta.ri;
-     }
--    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
--    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
-+    if (status.repr) {
-+      goto suspend;
-+    }
-+
-+    ok:
-+    self->private_impl.p_decode_extension = 0;
-+    goto exit;
-   }
--  return wuffs_base__make_empty_struct();
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_extension = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
- }
- 
--// ‼ WUFFS MULTI-FILE SECTION +x86_avx2
--// -------- func jpeg.decoder.decode_idct_x86_avx2
-+// -------- func gif.decoder.skip_blocks
- 
--#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
--WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_jpeg__decoder__decode_idct_x86_avx2(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__slice_u8 a_dst_buffer,
--    uint64_t a_dst_stride,
--    uint32_t a_q) {
--  __m256i v_k_0000 = {0};
--  __m256i v_k_8080 = {0};
--  __m256i v_k_0000_0002 = {0};
--  __m256i v_k_0001_FFFF = {0};
--  __m256i v_k_0400_0000 = {0};
--  __m256i v_k_29CF_1151_D630_1151 = {0};
--  __m256i v_k_E333_133E_ADFD_1051 = {0};
--  __m256i v_k_E6DC_25A1_1925_25A1 = {0};
--  __m256i v_k_ECC1_E333_EFB0_ADFD = {0};
--  __m128i v_az_coeffs = {0};
--  __m256i v_az_ah00 = {0};
--  __m256i v_az_ad00 = {0};
--  __m256i v_az_eh00 = {0};
--  __m256i v_az_adeh = {0};
--  __m256i v_rows01 = {0};
--  __m256i v_rows23 = {0};
--  __m256i v_rows45 = {0};
--  __m256i v_rows67 = {0};
--  __m256i v_quants01 = {0};
--  __m256i v_quants23 = {0};
--  __m256i v_quants45 = {0};
--  __m256i v_quants67 = {0};
--  __m256i v_rows04 = {0};
--  __m256i v_rows31 = {0};
--  __m256i v_rows26 = {0};
--  __m256i v_rows75 = {0};
--  __m256i v_fp_rows62 = {0};
--  __m256i v_fp_bq2662ad = {0};
--  __m256i v_fp_bq2662eh = {0};
--  __m256i v_fp_cb26ad = {0};
--  __m256i v_fp_cb26eh = {0};
--  __m256i v_fp_rows40pos = {0};
--  __m256i v_fp_rows04neg = {0};
--  __m256i v_fp_rows0pm4 = {0};
--  __m256i v_fp_ccpmad = {0};
--  __m256i v_fp_ccpmeh = {0};
--  __m256i v_fp_cd01ad = {0};
--  __m256i v_fp_cd01eh = {0};
--  __m256i v_fp_cd32ad = {0};
--  __m256i v_fp_cd32eh = {0};
--  __m256i v_fp_sums7351 = {0};
--  __m256i v_fp_sums5173 = {0};
--  __m256i v_fp_ci73515173ad = {0};
--  __m256i v_fp_ci73515173eh = {0};
--  __m256i v_fp_cl7351ad = {0};
--  __m256i v_fp_cl7351eh = {0};
--  __m256i v_fp_rows13 = {0};
--  __m256i v_fp_bq7153ad = {0};
--  __m256i v_fp_bq7153eh = {0};
--  __m256i v_fp_ck75ad = {0};
--  __m256i v_fp_ck75eh = {0};
--  __m256i v_fp_cl5173ad = {0};
--  __m256i v_fp_cl5173eh = {0};
--  __m256i v_fp_ck13ad = {0};
--  __m256i v_fp_ck13eh = {0};
--  __m256i v_intermediate01ad = {0};
--  __m256i v_intermediate01eh = {0};
--  __m256i v_intermediate01 = {0};
--  __m256i v_intermediate32ad = {0};
--  __m256i v_intermediate32eh = {0};
--  __m256i v_intermediate32 = {0};
--  __m256i v_intermediate45ad = {0};
--  __m256i v_intermediate45eh = {0};
--  __m256i v_intermediate45 = {0};
--  __m256i v_intermediate76ad = {0};
--  __m256i v_intermediate76eh = {0};
--  __m256i v_intermediate76 = {0};
--  __m256i v_ita0a1e0e1 = {0};
--  __m256i v_ita2a3e2e3 = {0};
--  __m256i v_ita4a5e4e5 = {0};
--  __m256i v_ita6a7e6e7 = {0};
--  __m256i v_ita0c0e0g0 = {0};
--  __m256i v_ita1c1e1g1 = {0};
--  __m256i v_ita4c4e4g4 = {0};
--  __m256i v_ita5c5e5g5 = {0};
--  __m256i v_ita0b0e0f0 = {0};
--  __m256i v_ita4b4e4f4 = {0};
--  __m256i v_itc0d0g0h0 = {0};
--  __m256i v_itc4d4g4h4 = {0};
--  __m256i v_intermediateae = {0};
--  __m256i v_intermediatebf = {0};
--  __m256i v_intermediatecg = {0};
--  __m256i v_intermediatedh = {0};
--  __m256i v_intermediatedb = {0};
--  __m256i v_intermediatehf = {0};
--  __m256i v_sp_cols62 = {0};
--  __m256i v_sp_bq2662ad = {0};
--  __m256i v_sp_bq2662eh = {0};
--  __m256i v_sp_rb26ad = {0};
--  __m256i v_sp_rb26eh = {0};
--  __m256i v_sp_cols40pos = {0};
--  __m256i v_sp_cols04neg = {0};
--  __m256i v_sp_cols0pm4 = {0};
--  __m256i v_sp_rcpmad = {0};
--  __m256i v_sp_rcpmeh = {0};
--  __m256i v_sp_rd01ad = {0};
--  __m256i v_sp_rd01eh = {0};
--  __m256i v_sp_rd32ad = {0};
--  __m256i v_sp_rd32eh = {0};
--  __m256i v_sp_sums7351 = {0};
--  __m256i v_sp_sums5173 = {0};
--  __m256i v_sp_ri73515173ad = {0};
--  __m256i v_sp_ri73515173eh = {0};
--  __m256i v_sp_rl7351ad = {0};
--  __m256i v_sp_rl7351eh = {0};
--  __m256i v_sp_cols13 = {0};
--  __m256i v_sp_bq7153ad = {0};
--  __m256i v_sp_bq7153eh = {0};
--  __m256i v_sp_rk75ad = {0};
--  __m256i v_sp_rk75eh = {0};
--  __m256i v_sp_rl5173ad = {0};
--  __m256i v_sp_rl5173eh = {0};
--  __m256i v_sp_rk13ad = {0};
--  __m256i v_sp_rk13eh = {0};
--  __m256i v_final01ad = {0};
--  __m256i v_final01eh = {0};
--  __m256i v_final01 = {0};
--  __m256i v_final32ad = {0};
--  __m256i v_final32eh = {0};
--  __m256i v_final32 = {0};
--  __m256i v_final45ad = {0};
--  __m256i v_final45eh = {0};
--  __m256i v_final45 = {0};
--  __m256i v_final76ad = {0};
--  __m256i v_final76eh = {0};
--  __m256i v_final76 = {0};
--  __m256i v_fta0a1e0e1 = {0};
--  __m256i v_fta2a3e2e3 = {0};
--  __m256i v_fta4a5e4e5 = {0};
--  __m256i v_fta6a7e6e7 = {0};
--  __m256i v_fta0c0e0g0 = {0};
--  __m256i v_fta1c1e1g1 = {0};
--  __m256i v_fta4c4e4g4 = {0};
--  __m256i v_fta5c5e5g5 = {0};
--  __m256i v_fta0b0e0f0 = {0};
--  __m256i v_ftc0d0g0h0 = {0};
--  __m256i v_fta4b4e4f4 = {0};
--  __m256i v_ftc4d4g4h4 = {0};
--  __m256i v_finalae = {0};
--  __m256i v_finalbf = {0};
--  __m256i v_finalcg = {0};
--  __m256i v_finaldh = {0};
--  __m256i v_final0145 = {0};
--  __m256i v_final2367 = {0};
--  uint64_t v_final0 = 0;
--  uint64_t v_final1 = 0;
--  uint64_t v_final2 = 0;
--  uint64_t v_final3 = 0;
--  uint64_t v_final4 = 0;
--  uint64_t v_final5 = 0;
--  uint64_t v_final6 = 0;
--  uint64_t v_final7 = 0;
--  wuffs_base__slice_u8 v_remaining = {0};
--
--  if (8u > a_dst_stride) {
--    return wuffs_base__make_empty_struct();
--  }
--  v_k_0000 = _mm256_set_epi16((int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u));
--  v_k_8080 = _mm256_set_epi16((int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u));
--  v_k_0000_0002 = _mm256_set_epi16((int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u));
--  v_k_0001_FFFF = _mm256_set_epi16((int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u));
--  v_k_0400_0000 = _mm256_set_epi16((int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u));
--  v_k_29CF_1151_D630_1151 = _mm256_set_epi16((int16_t)(4433u), (int16_t)(54832u), (int16_t)(4433u), (int16_t)(54832u), (int16_t)(4433u), (int16_t)(54832u), (int16_t)(4433u), (int16_t)(54832u), (int16_t)(4433u), (int16_t)(10703u), (int16_t)(4433u), (int16_t)(10703u), (int16_t)(4433u), (int16_t)(10703u), (int16_t)(4433u), (int16_t)(10703u));
--  v_k_E333_133E_ADFD_1051 = _mm256_set_epi16((int16_t)(4177u), (int16_t)(44541u), (int16_t)(4177u), (int16_t)(44541u), (int16_t)(4177u), (int16_t)(44541u), (int16_t)(4177u), (int16_t)(44541u), (int16_t)(4926u), (int16_t)(58163u), (int16_t)(4926u), (int16_t)(58163u), (int16_t)(4926u), (int16_t)(58163u), (int16_t)(4926u), (int16_t)(58163u));
--  v_k_E6DC_25A1_1925_25A1 = _mm256_set_epi16((int16_t)(9633u), (int16_t)(6437u), (int16_t)(9633u), (int16_t)(6437u), (int16_t)(9633u), (int16_t)(6437u), (int16_t)(9633u), (int16_t)(6437u), (int16_t)(9633u), (int16_t)(59100u), (int16_t)(9633u), (int16_t)(59100u), (int16_t)(9633u), (int16_t)(59100u), (int16_t)(9633u), (int16_t)(59100u));
--  v_k_ECC1_E333_EFB0_ADFD = _mm256_set_epi16((int16_t)(44541u), (int16_t)(61360u), (int16_t)(44541u), (int16_t)(61360u), (int16_t)(44541u), (int16_t)(61360u), (int16_t)(44541u), (int16_t)(61360u), (int16_t)(58163u), (int16_t)(60609u), (int16_t)(58163u), (int16_t)(60609u), (int16_t)(58163u), (int16_t)(60609u), (int16_t)(58163u), (int16_t)(60609u));
--  do {
--    if (0u == (wuffs_base__peek_u64le__no_bounds_check((const uint8_t*)(const void*)(self->private_data.f_mcu_blocks[0u] + 8u)) | wuffs_base__peek_u64le__no_bounds_check((const uint8_t*)(const void*)(self->private_data.f_mcu_blocks[0u] + 16u)))) {
--      v_az_coeffs = _mm_or_si128(_mm_or_si128(_mm_or_si128(_mm_or_si128(_mm_or_si128(_mm_or_si128(_mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 8u)), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 16u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 24u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 32u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 40u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 48u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 56u)));
--      if (0u == ((uint64_t)(_mm_cvtsi128_si64(_mm_packs_epi16(v_az_coeffs, v_az_coeffs))))) {
--        v_rows01 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 0u));
--        v_quants01 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 0u));
--        v_rows01 = _mm256_mullo_epi16(v_rows01, v_quants01);
--        v_az_ah00 = _mm256_slli_epi16(v_rows01, (int32_t)(2u));
--        v_az_ad00 = _mm256_unpacklo_epi16(v_az_ah00, v_az_ah00);
--        v_az_eh00 = _mm256_unpackhi_epi16(v_az_ah00, v_az_ah00);
--        v_az_adeh = _mm256_inserti128_si256(v_az_ad00, _mm256_castsi256_si128(v_az_eh00), (int32_t)(1u));
--        v_intermediateae = _mm256_shuffle_epi32(v_az_adeh, (int32_t)(0u));
--        v_intermediatebf = _mm256_shuffle_epi32(v_az_adeh, (int32_t)(85u));
--        v_intermediatecg = _mm256_shuffle_epi32(v_az_adeh, (int32_t)(170u));
--        v_intermediatedh = _mm256_shuffle_epi32(v_az_adeh, (int32_t)(255u));
--        break;
--      }
--    }
--    v_rows01 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 0u));
--    v_rows23 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 16u));
--    v_rows45 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 32u));
--    v_rows67 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 48u));
--    v_quants01 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 0u));
--    v_quants23 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 16u));
--    v_quants45 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 32u));
--    v_quants67 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 48u));
--    v_rows01 = _mm256_mullo_epi16(v_rows01, v_quants01);
--    v_rows23 = _mm256_mullo_epi16(v_rows23, v_quants23);
--    v_rows45 = _mm256_mullo_epi16(v_rows45, v_quants45);
--    v_rows67 = _mm256_mullo_epi16(v_rows67, v_quants67);
--    v_rows04 = _mm256_permute2x128_si256(v_rows01, v_rows45, (int32_t)(32u));
--    v_rows31 = _mm256_permute2x128_si256(v_rows23, v_rows01, (int32_t)(49u));
--    v_rows26 = _mm256_permute2x128_si256(v_rows23, v_rows67, (int32_t)(32u));
--    v_rows75 = _mm256_permute2x128_si256(v_rows67, v_rows45, (int32_t)(49u));
--    v_fp_rows62 = _mm256_permute2x128_si256(v_rows26, v_rows26, (int32_t)(1u));
--    v_fp_bq2662ad = _mm256_unpacklo_epi16(v_rows26, v_fp_rows62);
--    v_fp_bq2662eh = _mm256_unpackhi_epi16(v_rows26, v_fp_rows62);
--    v_fp_cb26ad = _mm256_madd_epi16(v_fp_bq2662ad, v_k_29CF_1151_D630_1151);
--    v_fp_cb26eh = _mm256_madd_epi16(v_fp_bq2662eh, v_k_29CF_1151_D630_1151);
--    v_fp_rows40pos = _mm256_permute2x128_si256(v_rows04, v_rows04, (int32_t)(1u));
--    v_fp_rows04neg = _mm256_sign_epi16(v_rows04, v_k_0001_FFFF);
--    v_fp_rows0pm4 = _mm256_add_epi16(v_fp_rows40pos, v_fp_rows04neg);
--    v_fp_ccpmad = _mm256_srai_epi32(_mm256_unpacklo_epi16(v_k_0000, v_fp_rows0pm4), (int32_t)(3u));
--    v_fp_ccpmeh = _mm256_srai_epi32(_mm256_unpackhi_epi16(v_k_0000, v_fp_rows0pm4), (int32_t)(3u));
--    v_fp_cd01ad = _mm256_add_epi32(v_fp_ccpmad, v_fp_cb26ad);
--    v_fp_cd01eh = _mm256_add_epi32(v_fp_ccpmeh, v_fp_cb26eh);
--    v_fp_cd32ad = _mm256_sub_epi32(v_fp_ccpmad, v_fp_cb26ad);
--    v_fp_cd32eh = _mm256_sub_epi32(v_fp_ccpmeh, v_fp_cb26eh);
--    v_fp_sums7351 = _mm256_add_epi16(v_rows75, v_rows31);
--    v_fp_sums5173 = _mm256_permute2x128_si256(v_fp_sums7351, v_fp_sums7351, (int32_t)(1u));
--    v_fp_ci73515173ad = _mm256_unpacklo_epi16(v_fp_sums7351, v_fp_sums5173);
--    v_fp_ci73515173eh = _mm256_unpackhi_epi16(v_fp_sums7351, v_fp_sums5173);
--    v_fp_cl7351ad = _mm256_madd_epi16(v_fp_ci73515173ad, v_k_E6DC_25A1_1925_25A1);
--    v_fp_cl7351eh = _mm256_madd_epi16(v_fp_ci73515173eh, v_k_E6DC_25A1_1925_25A1);
--    v_fp_rows13 = _mm256_permute2x128_si256(v_rows31, v_rows31, (int32_t)(1u));
--    v_fp_bq7153ad = _mm256_unpacklo_epi16(v_rows75, v_fp_rows13);
--    v_fp_bq7153eh = _mm256_unpackhi_epi16(v_rows75, v_fp_rows13);
--    v_fp_ck75ad = _mm256_add_epi32(_mm256_madd_epi16(v_fp_bq7153ad, v_k_ECC1_E333_EFB0_ADFD), v_fp_cl7351ad);
--    v_fp_ck75eh = _mm256_add_epi32(_mm256_madd_epi16(v_fp_bq7153eh, v_k_ECC1_E333_EFB0_ADFD), v_fp_cl7351eh);
--    v_fp_cl5173ad = _mm256_permute2x128_si256(v_fp_cl7351ad, v_fp_cl7351ad, (int32_t)(1u));
--    v_fp_cl5173eh = _mm256_permute2x128_si256(v_fp_cl7351eh, v_fp_cl7351eh, (int32_t)(1u));
--    v_fp_ck13ad = _mm256_add_epi32(v_fp_cl5173ad, _mm256_madd_epi16(v_fp_bq7153ad, v_k_E333_133E_ADFD_1051));
--    v_fp_ck13eh = _mm256_add_epi32(v_fp_cl5173eh, _mm256_madd_epi16(v_fp_bq7153eh, v_k_E333_133E_ADFD_1051));
--    v_intermediate01ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_fp_cd01ad, v_fp_ck13ad), v_k_0400_0000), (int32_t)(11u));
--    v_intermediate01eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_fp_cd01eh, v_fp_ck13eh), v_k_0400_0000), (int32_t)(11u));
--    v_intermediate01 = _mm256_packs_epi32(v_intermediate01ad, v_intermediate01eh);
--    v_intermediate32ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_fp_cd32ad, v_fp_ck75ad), v_k_0400_0000), (int32_t)(11u));
--    v_intermediate32eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_fp_cd32eh, v_fp_ck75eh), v_k_0400_0000), (int32_t)(11u));
--    v_intermediate32 = _mm256_packs_epi32(v_intermediate32ad, v_intermediate32eh);
--    v_intermediate45ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_fp_cd32ad, v_fp_ck75ad), v_k_0400_0000), (int32_t)(11u));
--    v_intermediate45eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_fp_cd32eh, v_fp_ck75eh), v_k_0400_0000), (int32_t)(11u));
--    v_intermediate45 = _mm256_packs_epi32(v_intermediate45ad, v_intermediate45eh);
--    v_intermediate76ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_fp_cd01ad, v_fp_ck13ad), v_k_0400_0000), (int32_t)(11u));
--    v_intermediate76eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_fp_cd01eh, v_fp_ck13eh), v_k_0400_0000), (int32_t)(11u));
--    v_intermediate76 = _mm256_packs_epi32(v_intermediate76ad, v_intermediate76eh);
--    v_ita0a1e0e1 = _mm256_permute4x64_epi64(v_intermediate01, (int32_t)(216u));
--    v_ita2a3e2e3 = _mm256_permute4x64_epi64(v_intermediate32, (int32_t)(114u));
--    v_ita4a5e4e5 = _mm256_permute4x64_epi64(v_intermediate45, (int32_t)(216u));
--    v_ita6a7e6e7 = _mm256_permute4x64_epi64(v_intermediate76, (int32_t)(114u));
--    v_ita0c0e0g0 = _mm256_unpacklo_epi16(v_ita0a1e0e1, v_ita2a3e2e3);
--    v_ita1c1e1g1 = _mm256_unpackhi_epi16(v_ita0a1e0e1, v_ita2a3e2e3);
--    v_ita4c4e4g4 = _mm256_unpacklo_epi16(v_ita4a5e4e5, v_ita6a7e6e7);
--    v_ita5c5e5g5 = _mm256_unpackhi_epi16(v_ita4a5e4e5, v_ita6a7e6e7);
--    v_ita0b0e0f0 = _mm256_unpacklo_epi16(v_ita0c0e0g0, v_ita1c1e1g1);
--    v_itc0d0g0h0 = _mm256_unpackhi_epi16(v_ita0c0e0g0, v_ita1c1e1g1);
--    v_ita4b4e4f4 = _mm256_unpacklo_epi16(v_ita4c4e4g4, v_ita5c5e5g5);
--    v_itc4d4g4h4 = _mm256_unpackhi_epi16(v_ita4c4e4g4, v_ita5c5e5g5);
--    v_intermediateae = _mm256_unpacklo_epi64(v_ita0b0e0f0, v_ita4b4e4f4);
--    v_intermediatebf = _mm256_unpackhi_epi64(v_ita0b0e0f0, v_ita4b4e4f4);
--    v_intermediatecg = _mm256_unpacklo_epi64(v_itc0d0g0h0, v_itc4d4g4h4);
--    v_intermediatedh = _mm256_unpackhi_epi64(v_itc0d0g0h0, v_itc4d4g4h4);
--  } while (0);
--  v_intermediatedb = _mm256_permute2x128_si256(v_intermediatedh, v_intermediatebf, (int32_t)(32u));
--  v_intermediatehf = _mm256_permute2x128_si256(v_intermediatedh, v_intermediatebf, (int32_t)(49u));
--  v_sp_cols62 = _mm256_permute2x128_si256(v_intermediatecg, v_intermediatecg, (int32_t)(1u));
--  v_sp_bq2662ad = _mm256_unpacklo_epi16(v_intermediatecg, v_sp_cols62);
--  v_sp_bq2662eh = _mm256_unpackhi_epi16(v_intermediatecg, v_sp_cols62);
--  v_sp_rb26ad = _mm256_madd_epi16(v_sp_bq2662ad, v_k_29CF_1151_D630_1151);
--  v_sp_rb26eh = _mm256_madd_epi16(v_sp_bq2662eh, v_k_29CF_1151_D630_1151);
--  v_sp_cols40pos = _mm256_permute2x128_si256(v_intermediateae, v_intermediateae, (int32_t)(1u));
--  v_sp_cols04neg = _mm256_sign_epi16(v_intermediateae, v_k_0001_FFFF);
--  v_sp_cols0pm4 = _mm256_add_epi16(v_sp_cols40pos, v_sp_cols04neg);
--  v_sp_rcpmad = _mm256_srai_epi32(_mm256_unpacklo_epi16(v_k_0000, v_sp_cols0pm4), (int32_t)(3u));
--  v_sp_rcpmeh = _mm256_srai_epi32(_mm256_unpackhi_epi16(v_k_0000, v_sp_cols0pm4), (int32_t)(3u));
--  v_sp_rd01ad = _mm256_add_epi32(v_sp_rcpmad, v_sp_rb26ad);
--  v_sp_rd01eh = _mm256_add_epi32(v_sp_rcpmeh, v_sp_rb26eh);
--  v_sp_rd32ad = _mm256_sub_epi32(v_sp_rcpmad, v_sp_rb26ad);
--  v_sp_rd32eh = _mm256_sub_epi32(v_sp_rcpmeh, v_sp_rb26eh);
--  v_sp_sums7351 = _mm256_add_epi16(v_intermediatehf, v_intermediatedb);
--  v_sp_sums5173 = _mm256_permute2x128_si256(v_sp_sums7351, v_sp_sums7351, (int32_t)(1u));
--  v_sp_ri73515173ad = _mm256_unpacklo_epi16(v_sp_sums7351, v_sp_sums5173);
--  v_sp_ri73515173eh = _mm256_unpackhi_epi16(v_sp_sums7351, v_sp_sums5173);
--  v_sp_rl7351ad = _mm256_madd_epi16(v_sp_ri73515173ad, v_k_E6DC_25A1_1925_25A1);
--  v_sp_rl7351eh = _mm256_madd_epi16(v_sp_ri73515173eh, v_k_E6DC_25A1_1925_25A1);
--  v_sp_cols13 = _mm256_permute2x128_si256(v_intermediatedb, v_intermediatedb, (int32_t)(1u));
--  v_sp_bq7153ad = _mm256_unpacklo_epi16(v_intermediatehf, v_sp_cols13);
--  v_sp_bq7153eh = _mm256_unpackhi_epi16(v_intermediatehf, v_sp_cols13);
--  v_sp_rk75ad = _mm256_add_epi32(_mm256_madd_epi16(v_sp_bq7153ad, v_k_ECC1_E333_EFB0_ADFD), v_sp_rl7351ad);
--  v_sp_rk75eh = _mm256_add_epi32(_mm256_madd_epi16(v_sp_bq7153eh, v_k_ECC1_E333_EFB0_ADFD), v_sp_rl7351eh);
--  v_sp_rl5173ad = _mm256_permute2x128_si256(v_sp_rl7351ad, v_sp_rl7351ad, (int32_t)(1u));
--  v_sp_rl5173eh = _mm256_permute2x128_si256(v_sp_rl7351eh, v_sp_rl7351eh, (int32_t)(1u));
--  v_sp_rk13ad = _mm256_add_epi32(v_sp_rl5173ad, _mm256_madd_epi16(v_sp_bq7153ad, v_k_E333_133E_ADFD_1051));
--  v_sp_rk13eh = _mm256_add_epi32(v_sp_rl5173eh, _mm256_madd_epi16(v_sp_bq7153eh, v_k_E333_133E_ADFD_1051));
--  v_final01ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_sp_rd01ad, v_sp_rk13ad), v_k_0000_0002), (int32_t)(18u));
--  v_final01eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_sp_rd01eh, v_sp_rk13eh), v_k_0000_0002), (int32_t)(18u));
--  v_final01 = _mm256_packs_epi32(v_final01ad, v_final01eh);
--  v_final32ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_sp_rd32ad, v_sp_rk75ad), v_k_0000_0002), (int32_t)(18u));
--  v_final32eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_sp_rd32eh, v_sp_rk75eh), v_k_0000_0002), (int32_t)(18u));
--  v_final32 = _mm256_packs_epi32(v_final32ad, v_final32eh);
--  v_final45ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_sp_rd32ad, v_sp_rk75ad), v_k_0000_0002), (int32_t)(18u));
--  v_final45eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_sp_rd32eh, v_sp_rk75eh), v_k_0000_0002), (int32_t)(18u));
--  v_final45 = _mm256_packs_epi32(v_final45ad, v_final45eh);
--  v_final76ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_sp_rd01ad, v_sp_rk13ad), v_k_0000_0002), (int32_t)(18u));
--  v_final76eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_sp_rd01eh, v_sp_rk13eh), v_k_0000_0002), (int32_t)(18u));
--  v_final76 = _mm256_packs_epi32(v_final76ad, v_final76eh);
--  v_fta0a1e0e1 = _mm256_permute4x64_epi64(v_final01, (int32_t)(216u));
--  v_fta2a3e2e3 = _mm256_permute4x64_epi64(v_final32, (int32_t)(114u));
--  v_fta4a5e4e5 = _mm256_permute4x64_epi64(v_final45, (int32_t)(216u));
--  v_fta6a7e6e7 = _mm256_permute4x64_epi64(v_final76, (int32_t)(114u));
--  v_fta0c0e0g0 = _mm256_unpacklo_epi16(v_fta0a1e0e1, v_fta2a3e2e3);
--  v_fta1c1e1g1 = _mm256_unpackhi_epi16(v_fta0a1e0e1, v_fta2a3e2e3);
--  v_fta4c4e4g4 = _mm256_unpacklo_epi16(v_fta4a5e4e5, v_fta6a7e6e7);
--  v_fta5c5e5g5 = _mm256_unpackhi_epi16(v_fta4a5e4e5, v_fta6a7e6e7);
--  v_fta0b0e0f0 = _mm256_unpacklo_epi16(v_fta0c0e0g0, v_fta1c1e1g1);
--  v_ftc0d0g0h0 = _mm256_unpackhi_epi16(v_fta0c0e0g0, v_fta1c1e1g1);
--  v_fta4b4e4f4 = _mm256_unpacklo_epi16(v_fta4c4e4g4, v_fta5c5e5g5);
--  v_ftc4d4g4h4 = _mm256_unpackhi_epi16(v_fta4c4e4g4, v_fta5c5e5g5);
--  v_finalae = _mm256_unpacklo_epi64(v_fta0b0e0f0, v_fta4b4e4f4);
--  v_finalbf = _mm256_unpackhi_epi64(v_fta0b0e0f0, v_fta4b4e4f4);
--  v_finalcg = _mm256_unpacklo_epi64(v_ftc0d0g0h0, v_ftc4d4g4h4);
--  v_finaldh = _mm256_unpackhi_epi64(v_ftc0d0g0h0, v_ftc4d4g4h4);
--  v_final0145 = _mm256_add_epi8(_mm256_packs_epi16(v_finalae, v_finalbf), v_k_8080);
--  v_final2367 = _mm256_add_epi8(_mm256_packs_epi16(v_finalcg, v_finaldh), v_k_8080);
--  v_final0 = ((uint64_t)(_mm256_extract_epi64(v_final0145, (int32_t)(0u))));
--  v_final1 = ((uint64_t)(_mm256_extract_epi64(v_final0145, (int32_t)(1u))));
--  v_final2 = ((uint64_t)(_mm256_extract_epi64(v_final2367, (int32_t)(0u))));
--  v_final3 = ((uint64_t)(_mm256_extract_epi64(v_final2367, (int32_t)(1u))));
--  v_final4 = ((uint64_t)(_mm256_extract_epi64(v_final0145, (int32_t)(2u))));
--  v_final5 = ((uint64_t)(_mm256_extract_epi64(v_final0145, (int32_t)(3u))));
--  v_final6 = ((uint64_t)(_mm256_extract_epi64(v_final2367, (int32_t)(2u))));
--  v_final7 = ((uint64_t)(_mm256_extract_epi64(v_final2367, (int32_t)(3u))));
--  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
--    return wuffs_base__make_empty_struct();
--  }
--  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
--  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final0);
--  a_dst_buffer = v_remaining;
--  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
--    return wuffs_base__make_empty_struct();
--  }
--  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
--  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final1);
--  a_dst_buffer = v_remaining;
--  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
--    return wuffs_base__make_empty_struct();
--  }
--  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
--  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final2);
--  a_dst_buffer = v_remaining;
--  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
--    return wuffs_base__make_empty_struct();
--  }
--  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
--  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final3);
--  a_dst_buffer = v_remaining;
--  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
--    return wuffs_base__make_empty_struct();
--  }
--  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
--  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final4);
--  a_dst_buffer = v_remaining;
--  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
--    return wuffs_base__make_empty_struct();
--  }
--  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
--  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final5);
--  a_dst_buffer = v_remaining;
--  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
--    return wuffs_base__make_empty_struct();
--  }
--  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
--  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final6);
--  a_dst_buffer = v_remaining;
--  if (8u > ((uint64_t)(a_dst_buffer.len))) {
--    return wuffs_base__make_empty_struct();
--  }
--  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final7);
--  return wuffs_base__make_empty_struct();
--}
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_64)
--// ‼ WUFFS MULTI-FILE SECTION -x86_avx2
--
--// -------- func jpeg.decoder.get_quirk
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_jpeg__decoder__get_quirk(
--    const wuffs_jpeg__decoder* self,
--    uint32_t a_key) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
--
--  return 0u;
--}
--
--// -------- func jpeg.decoder.set_quirk
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_jpeg__decoder__set_quirk(
--    wuffs_jpeg__decoder* self,
--    uint32_t a_key,
--    uint64_t a_value) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--
--  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
--}
--
--// -------- func jpeg.decoder.decode_image_config
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_jpeg__decoder__decode_image_config(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__image_config* a_dst,
-+static wuffs_base__status
-+wuffs_gif__decoder__skip_blocks(
-+    wuffs_gif__decoder* self,
-     wuffs_base__io_buffer* a_src) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--  if (!a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 1)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
--  }
--  self->private_impl.active_coroutine = 0;
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+  uint8_t v_block_size = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0];
-+  uint32_t coro_susp_point = self->private_impl.p_skip_blocks;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
-     while (true) {
-       {
--        wuffs_base__status t_0 = wuffs_jpeg__decoder__do_decode_image_config(self, a_dst, a_src);
--        v_status = t_0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_0 = *iop_a_src++;
-+        v_block_size = t_0;
-       }
--      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_jpeg__error__truncated_input);
--        goto exit;
-+      if (v_block_size == 0u) {
-+        status = wuffs_base__make_status(NULL);
-+        goto ok;
-       }
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+      self->private_data.s_skip_blocks.scratch = ((uint32_t)(v_block_size));
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+      if (self->private_data.s_skip_blocks.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+        self->private_data.s_skip_blocks.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+        iop_a_src = io2_a_src;
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      iop_a_src += self->private_data.s_skip_blocks.scratch;
-     }
- 
-     ok:
--    self->private_impl.p_decode_image_config[0] = 0;
-+    self->private_impl.p_skip_blocks = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
-+  self->private_impl.p_skip_blocks = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
-   goto exit;
-   exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
-+
-   return status;
- }
- 
--// -------- func jpeg.decoder.do_decode_image_config
-+// -------- func gif.decoder.decode_ae
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_jpeg__decoder__do_decode_image_config(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__image_config* a_dst,
-+wuffs_gif__decoder__decode_ae(
-+    wuffs_gif__decoder* self,
-     wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint8_t v_c = 0;
--  uint8_t v_marker = 0;
--  uint32_t v_pixfmt = 0;
-+  uint8_t v_c8 = 0;
-+  uint8_t v_block_size = 0;
-+  bool v_is_animexts = false;
-+  bool v_is_netscape = false;
-+  bool v_is_iccp = false;
-+  bool v_is_xmp = false;
- 
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -42362,253 +42476,191 @@ wuffs_jpeg__decoder__do_decode_image_config(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_ae;
-   if (coro_susp_point) {
--    v_marker = self->private_data.s_do_decode_image_config[0].v_marker;
-+    v_block_size = self->private_data.s_decode_ae.v_block_size;
-+    v_is_animexts = self->private_data.s_decode_ae.v_is_animexts;
-+    v_is_netscape = self->private_data.s_decode_ae.v_is_netscape;
-+    v_is_iccp = self->private_data.s_decode_ae.v_is_iccp;
-+    v_is_xmp = self->private_data.s_decode_ae.v_is_xmp;
-   }
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if (self->private_impl.f_call_sequence != 0u) {
--      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
--      goto exit;
--    }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
-+    do {
-+      if (self->private_impl.f_metadata_fourcc != 0u) {
-+        status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
-+        goto ok;
-       }
--      uint8_t t_0 = *iop_a_src++;
--      v_c = t_0;
--    }
--    if (v_c != 255u) {
--      status = wuffs_base__make_status(wuffs_jpeg__error__bad_header);
--      goto exit;
--    }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_0 = *iop_a_src++;
-+        v_block_size = t_0;
-       }
--      uint8_t t_1 = *iop_a_src++;
--      v_c = t_1;
--    }
--    if (v_c != 216u) {
--      status = wuffs_base__make_status(wuffs_jpeg__error__bad_header);
--      goto exit;
--    }
--    while (true) {
--      while (true) {
-+      if (v_block_size == 0u) {
-+        status = wuffs_base__make_status(NULL);
-+        goto ok;
-+      }
-+      if (v_block_size != 11u) {
-+        self->private_data.s_decode_ae.scratch = ((uint32_t)(v_block_size));
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+        if (self->private_data.s_decode_ae.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+          self->private_data.s_decode_ae.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+          iop_a_src = io2_a_src;
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        iop_a_src += self->private_data.s_decode_ae.scratch;
-+        break;
-+      }
-+      v_is_animexts = true;
-+      v_is_netscape = true;
-+      v_is_iccp = true;
-+      v_is_xmp = true;
-+      v_block_size = 0u;
-+      while (v_block_size < 11u) {
-         {
-           WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
-+          uint8_t t_1 = *iop_a_src++;
-+          v_c8 = t_1;
-+        }
-+        v_is_animexts = (v_is_animexts && (v_c8 == WUFFS_GIF__ANIMEXTS1DOT0[v_block_size]));
-+        v_is_netscape = (v_is_netscape && (v_c8 == WUFFS_GIF__NETSCAPE2DOT0[v_block_size]));
-+        v_is_iccp = (v_is_iccp && (v_c8 == WUFFS_GIF__ICCRGBG1012[v_block_size]));
-+        v_is_xmp = (v_is_xmp && (v_c8 == WUFFS_GIF__XMPDATAXMP[v_block_size]));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        v_block_size += 1u;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+      }
-+      if (v_is_animexts || v_is_netscape) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-           uint8_t t_2 = *iop_a_src++;
--          v_c = t_2;
-+          v_block_size = t_2;
-         }
--        if (v_c == 255u) {
-+        if (v_block_size != 3u) {
-+          self->private_data.s_decode_ae.scratch = ((uint32_t)(v_block_size));
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+          if (self->private_data.s_decode_ae.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+            self->private_data.s_decode_ae.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+            iop_a_src = io2_a_src;
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          iop_a_src += self->private_data.s_decode_ae.scratch;
-           break;
-         }
--      }
--      while (true) {
-         {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
-           uint8_t t_3 = *iop_a_src++;
--          v_c = t_3;
-+          v_c8 = t_3;
-         }
--        if (v_c != 255u) {
--          v_marker = v_c;
-+        if (v_c8 != 1u) {
-+          self->private_data.s_decode_ae.scratch = 2u;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+          if (self->private_data.s_decode_ae.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+            self->private_data.s_decode_ae.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+            iop_a_src = io2_a_src;
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          iop_a_src += self->private_data.s_decode_ae.scratch;
-           break;
-         }
--      }
--      if (v_marker == 0u) {
--        continue;
--      } else if ((208u <= v_marker) && (v_marker <= 217u)) {
--        if (v_marker <= 215u) {
--          continue;
--        }
--      } else {
-         {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-           uint32_t t_4;
-           if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--            t_4 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
-+            t_4 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-             iop_a_src += 2;
-           } else {
--            self->private_data.s_do_decode_image_config[0].scratch = 0;
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+            self->private_data.s_decode_ae.scratch = 0;
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-             while (true) {
-               if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-                 status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-                 goto suspend;
-               }
--              uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--              uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFFu));
--              *scratch >>= 8;
-+              uint64_t* scratch = &self->private_data.s_decode_ae.scratch;
-+              uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
-               *scratch <<= 8;
--              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4);
-+              *scratch >>= 8;
-+              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
-               if (num_bits_4 == 8) {
--                t_4 = ((uint32_t)(*scratch >> 48));
-+                t_4 = ((uint32_t)(*scratch));
-                 break;
-               }
-               num_bits_4 += 8u;
--              *scratch |= ((uint64_t)(num_bits_4));
-+              *scratch |= ((uint64_t)(num_bits_4)) << 56;
-             }
-           }
--          self->private_impl.f_payload_length = t_4;
--        }
--        if (self->private_impl.f_payload_length < 2u) {
--          status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker);
--          goto exit;
--        }
--        self->private_impl.f_payload_length -= 2u;
--      }
--      if (v_marker < 192u) {
--        status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
--        goto exit;
--      } else if (v_marker < 208u) {
--        if (v_marker <= 194u) {
--          if (self->private_impl.f_sof_marker != 0u) {
--            status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
--            goto exit;
--          }
--          self->private_impl.f_sof_marker = v_marker;
--          if (a_src) {
--            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--          }
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
--          status = wuffs_jpeg__decoder__decode_sof(self, a_src);
--          if (a_src) {
--            iop_a_src = a_src->data.ptr + a_src->meta.ri;
--          }
--          if (status.repr) {
--            goto suspend;
--          }
--          break;
--        } else if (v_marker == 195u) {
--          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_lossless_coding);
--          goto exit;
--        } else if (v_marker == 196u) {
--          status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
--          goto exit;
--        } else if ((197u <= v_marker) && (v_marker <= 199u)) {
--          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_hierarchical_coding);
--          goto exit;
--        } else if (v_marker == 200u) {
--          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
--          goto exit;
--        } else {
--          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_arithmetic_coding);
--          goto exit;
--        }
--      } else if (v_marker < 224u) {
--        if (v_marker < 218u) {
--          status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker);
--          goto exit;
--        } else if (v_marker == 218u) {
--          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
--          goto exit;
--        } else if (v_marker == 219u) {
--          if (a_src) {
--            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--          }
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
--          status = wuffs_jpeg__decoder__decode_dqt(self, a_src);
--          if (a_src) {
--            iop_a_src = a_src->data.ptr + a_src->meta.ri;
--          }
--          if (status.repr) {
--            goto suspend;
--          }
--          continue;
--        } else if (v_marker == 221u) {
--          if (a_src) {
--            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--          }
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
--          status = wuffs_jpeg__decoder__decode_dri(self, a_src);
--          if (a_src) {
--            iop_a_src = a_src->data.ptr + a_src->meta.ri;
--          }
--          if (status.repr) {
--            goto suspend;
--          }
--          continue;
--        } else {
--          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
--          goto exit;
--        }
--      } else if (v_marker < 240u) {
--        if (a_src) {
--          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--        }
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
--        status = wuffs_jpeg__decoder__decode_appn(self, a_src, v_marker);
--        if (a_src) {
--          iop_a_src = a_src->data.ptr + a_src->meta.ri;
--        }
--        if (status.repr) {
--          goto suspend;
-+          self->private_impl.f_num_animation_loops_value = t_4;
-         }
--        continue;
--      } else {
--        if (v_marker == 254u) {
--        } else {
--          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
--          goto exit;
-+        self->private_impl.f_seen_num_animation_loops_value = true;
-+        if ((0u < self->private_impl.f_num_animation_loops_value) && (self->private_impl.f_num_animation_loops_value <= 65535u)) {
-+          self->private_impl.f_num_animation_loops_value += 1u;
-         }
-+      } else if (self->private_impl.f_call_sequence >= 32u) {
-+      } else if (v_is_iccp && self->private_impl.f_report_metadata_iccp) {
-+        self->private_impl.f_metadata_fourcc = 1229144912u;
-+        self->private_impl.f_metadata_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
-+        self->private_impl.f_call_sequence = 16u;
-+        status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
-+        goto ok;
-+      } else if (v_is_xmp && self->private_impl.f_report_metadata_xmp) {
-+        self->private_impl.f_metadata_fourcc = 1481461792u;
-+        self->private_impl.f_metadata_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
-+        self->private_impl.f_call_sequence = 16u;
-+        status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
-+        goto ok;
-       }
--      self->private_data.s_do_decode_image_config[0].scratch = self->private_impl.f_payload_length;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
--      if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--        self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--        iop_a_src = io2_a_src;
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      iop_a_src += self->private_data.s_do_decode_image_config[0].scratch;
--      self->private_impl.f_payload_length = 0u;
-+    } while (0);
-+    if (a_src) {
-+      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-     }
--    self->private_impl.choosy_decode_idct = (
--#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
--        wuffs_base__cpu_arch__have_x86_avx2() ? &wuffs_jpeg__decoder__decode_idct_x86_avx2 :
--#endif
--        self->private_impl.choosy_decode_idct);
--    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
--    if (a_dst != NULL) {
--      v_pixfmt = 536870920u;
--      if (self->private_impl.f_num_components > 1u) {
--        v_pixfmt = 2415954056u;
--      }
--      wuffs_base__image_config__set(
--          a_dst,
--          v_pixfmt,
--          0u,
--          self->private_impl.f_width,
--          self->private_impl.f_height,
--          self->private_impl.f_frame_config_io_position,
--          true);
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
-+    status = wuffs_gif__decoder__skip_blocks(self, a_src);
-+    if (a_src) {
-+      iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+    }
-+    if (status.repr) {
-+      goto suspend;
-     }
--    self->private_impl.f_call_sequence = 32u;
- 
--    goto ok;
-     ok:
--    self->private_impl.p_do_decode_image_config[0] = 0;
-+    self->private_impl.p_decode_ae = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_do_decode_image_config[0].v_marker = v_marker;
-+  self->private_impl.p_decode_ae = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_ae.v_block_size = v_block_size;
-+  self->private_data.s_decode_ae.v_is_animexts = v_is_animexts;
-+  self->private_data.s_decode_ae.v_is_netscape = v_is_netscape;
-+  self->private_data.s_decode_ae.v_is_iccp = v_is_iccp;
-+  self->private_data.s_decode_ae.v_is_xmp = v_is_xmp;
- 
-   goto exit;
-   exit:
-@@ -42619,18 +42671,18 @@ wuffs_jpeg__decoder__do_decode_image_config(
-   return status;
- }
- 
--// -------- func jpeg.decoder.decode_dqt
-+// -------- func gif.decoder.decode_gc
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_jpeg__decoder__decode_dqt(
--    wuffs_jpeg__decoder* self,
-+wuffs_gif__decoder__decode_gc(
-+    wuffs_gif__decoder* self,
-     wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint8_t v_c = 0;
--  uint8_t v_q = 0;
--  uint32_t v_i = 0;
-+  uint8_t v_c8 = 0;
-+  uint8_t v_flags = 0;
-+  uint16_t v_gc_duration_centiseconds = 0;
- 
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -42643,73 +42695,103 @@ wuffs_jpeg__decoder__decode_dqt(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_dqt[0];
--  if (coro_susp_point) {
--    v_q = self->private_data.s_decode_dqt[0].v_q;
--    v_i = self->private_data.s_decode_dqt[0].v_i;
--  }
-+  uint32_t coro_susp_point = self->private_impl.p_decode_gc;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    while (self->private_impl.f_payload_length > 0u) {
--      self->private_impl.f_payload_length -= 1u;
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
--        }
--        uint8_t t_0 = *iop_a_src++;
--        v_c = t_0;
--      }
--      if ((v_c & 15u) > 3u) {
--        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dqt_marker);
--        goto exit;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-       }
--      v_q = (v_c & 15u);
--      if ((v_c >> 4u) == 1u) {
--        status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision);
--        goto exit;
--      } else if (((v_c >> 4u) > 1u) || (self->private_impl.f_payload_length < 64u)) {
--        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dqt_marker);
--        goto exit;
-+      uint8_t t_0 = *iop_a_src++;
-+      v_c8 = t_0;
-+    }
-+    if (v_c8 != 4u) {
-+      status = wuffs_base__make_status(wuffs_gif__error__bad_graphic_control);
-+      goto exit;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-       }
--      self->private_impl.f_payload_length -= 64u;
--      v_i = 0u;
--      while (v_i < 64u) {
--        v_i += 1u;
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+      uint8_t t_1 = *iop_a_src++;
-+      v_flags = t_1;
-+    }
-+    self->private_impl.f_gc_has_transparent_index = (((uint8_t)(v_flags & 1u)) != 0u);
-+    v_flags = ((uint8_t)(((uint8_t)(v_flags >> 2u)) & 7u));
-+    if (v_flags == 2u) {
-+      self->private_impl.f_gc_disposal = 1u;
-+    } else if ((v_flags == 3u) || (v_flags == 4u)) {
-+      self->private_impl.f_gc_disposal = 2u;
-+    } else {
-+      self->private_impl.f_gc_disposal = 0u;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+      uint16_t t_2;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+        t_2 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
-+        iop_a_src += 2;
-+      } else {
-+        self->private_data.s_decode_gc.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+        while (true) {
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint16_t t_1 = *iop_a_src++;
--          self->private_impl.f_quant_tables[v_q][WUFFS_JPEG__UNZIG[v_i]] = t_1;
-+          uint64_t* scratch = &self->private_data.s_decode_gc.scratch;
-+          uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
-+          *scratch <<= 8;
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
-+          if (num_bits_2 == 8) {
-+            t_2 = ((uint16_t)(*scratch));
-+            break;
-+          }
-+          num_bits_2 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_2)) << 56;
-         }
-       }
--      self->private_impl.f_seen_dqt[v_q] = true;
--      if (self->private_impl.f_sof_marker == 0u) {
--        v_i = 0u;
--        while (v_i < 64u) {
--          self->private_impl.f_saved_quant_tables[v_q][v_i] = self->private_impl.f_quant_tables[v_q][v_i];
--          v_i += 1u;
--        }
--        self->private_impl.f_saved_seen_dqt[v_q] = true;
-+      v_gc_duration_centiseconds = t_2;
-+    }
-+    self->private_impl.f_gc_duration = (((uint64_t)(v_gc_duration_centiseconds)) * 7056000u);
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_3 = *iop_a_src++;
-+      self->private_impl.f_gc_transparent_index = t_3;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-       }
-+      uint8_t t_4 = *iop_a_src++;
-+      v_c8 = t_4;
-+    }
-+    if (v_c8 != 0u) {
-+      status = wuffs_base__make_status(wuffs_gif__error__bad_graphic_control);
-+      goto exit;
-     }
- 
-     goto ok;
-     ok:
--    self->private_impl.p_decode_dqt[0] = 0;
-+    self->private_impl.p_decode_gc = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_dqt[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_decode_dqt[0].v_q = v_q;
--  self->private_data.s_decode_dqt[0].v_i = v_i;
-+  self->private_impl.p_decode_gc = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
-   goto exit;
-   exit:
-@@ -42720,12 +42802,12 @@ wuffs_jpeg__decoder__decode_dqt(
-   return status;
- }
- 
--// -------- func jpeg.decoder.decode_dri
-+// -------- func gif.decoder.decode_id_part0
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_jpeg__decoder__decode_dri(
--    wuffs_jpeg__decoder* self,
-+wuffs_gif__decoder__decode_id_part0(
-+    wuffs_gif__decoder* self,
-     wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
-@@ -42740,57 +42822,144 @@ wuffs_jpeg__decoder__decode_dri(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_dri[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_id_part0;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if (self->private_impl.f_payload_length != 2u) {
--      status = wuffs_base__make_status(wuffs_jpeg__error__bad_dri_marker);
--      goto exit;
--    }
--    self->private_impl.f_payload_length = 0u;
-     {
-       WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      uint16_t t_0;
-+      uint32_t t_0;
-       if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--        t_0 = wuffs_base__peek_u16be__no_bounds_check(iop_a_src);
-+        t_0 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-         iop_a_src += 2;
-       } else {
--        self->private_data.s_decode_dri[0].scratch = 0;
-+        self->private_data.s_decode_id_part0.scratch = 0;
-         WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-         while (true) {
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint64_t* scratch = &self->private_data.s_decode_dri[0].scratch;
--          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
-+          uint64_t* scratch = &self->private_data.s_decode_id_part0.scratch;
-+          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
-           *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
-           if (num_bits_0 == 8) {
--            t_0 = ((uint16_t)(*scratch >> 48));
-+            t_0 = ((uint32_t)(*scratch));
-             break;
-           }
-           num_bits_0 += 8u;
--          *scratch |= ((uint64_t)(num_bits_0));
-+          *scratch |= ((uint64_t)(num_bits_0)) << 56;
-         }
-       }
--      self->private_impl.f_restart_interval = t_0;
-+      self->private_impl.f_frame_rect_x0 = t_0;
-     }
--    if (self->private_impl.f_sof_marker == 0u) {
--      self->private_impl.f_saved_restart_interval = self->private_impl.f_restart_interval;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+      uint32_t t_1;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+        t_1 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-+        iop_a_src += 2;
-+      } else {
-+        self->private_data.s_decode_id_part0.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_id_part0.scratch;
-+          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
-+          *scratch <<= 8;
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
-+          if (num_bits_1 == 8) {
-+            t_1 = ((uint32_t)(*scratch));
-+            break;
-+          }
-+          num_bits_1 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_1)) << 56;
-+        }
-+      }
-+      self->private_impl.f_frame_rect_y0 = t_1;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+      uint32_t t_2;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+        t_2 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-+        iop_a_src += 2;
-+      } else {
-+        self->private_data.s_decode_id_part0.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_id_part0.scratch;
-+          uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
-+          *scratch <<= 8;
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
-+          if (num_bits_2 == 8) {
-+            t_2 = ((uint32_t)(*scratch));
-+            break;
-+          }
-+          num_bits_2 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_2)) << 56;
-+        }
-+      }
-+      self->private_impl.f_frame_rect_x1 = t_2;
-+    }
-+    self->private_impl.f_frame_rect_x1 += self->private_impl.f_frame_rect_x0;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+      uint32_t t_3;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+        t_3 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-+        iop_a_src += 2;
-+      } else {
-+        self->private_data.s_decode_id_part0.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_id_part0.scratch;
-+          uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
-+          *scratch <<= 8;
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
-+          if (num_bits_3 == 8) {
-+            t_3 = ((uint32_t)(*scratch));
-+            break;
-+          }
-+          num_bits_3 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_3)) << 56;
-+        }
-+      }
-+      self->private_impl.f_frame_rect_y1 = t_3;
-+    }
-+    self->private_impl.f_frame_rect_y1 += self->private_impl.f_frame_rect_y0;
-+    self->private_impl.f_dst_x = self->private_impl.f_frame_rect_x0;
-+    self->private_impl.f_dst_y = self->private_impl.f_frame_rect_y0;
-+    if ((self->private_impl.f_num_decoded_frame_configs_value == 0u) &&  ! self->private_impl.f_quirks[4u]) {
-+      self->private_impl.f_width = wuffs_base__u32__max(self->private_impl.f_width, self->private_impl.f_frame_rect_x1);
-+      self->private_impl.f_height = wuffs_base__u32__max(self->private_impl.f_height, self->private_impl.f_frame_rect_y1);
-     }
- 
-     goto ok;
-     ok:
--    self->private_impl.p_decode_dri[0] = 0;
-+    self->private_impl.p_decode_id_part0 = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_dri[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.p_decode_id_part0 = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
-   goto exit;
-   exit:
-@@ -42801,18 +42970,24 @@ wuffs_jpeg__decoder__decode_dri(
-   return status;
- }
- 
--// -------- func jpeg.decoder.decode_appn
-+// -------- func gif.decoder.decode_id_part1
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_jpeg__decoder__decode_appn(
--    wuffs_jpeg__decoder* self,
-+wuffs_gif__decoder__decode_id_part1(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-     wuffs_base__io_buffer* a_src,
--    uint8_t a_marker) {
-+    wuffs_base__pixel_blend a_blend) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint8_t v_c8 = 0;
--  uint32_t v_c32 = 0;
-+  uint8_t v_flags = 0;
-+  uint8_t v_which_palette = 0;
-+  uint32_t v_num_palette_entries = 0;
-+  uint32_t v_i = 0;
-+  uint32_t v_argb = 0;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+  uint8_t v_lw = 0;
- 
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -42825,184 +43000,136 @@ wuffs_jpeg__decoder__decode_appn(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_appn[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_id_part1;
-+  if (coro_susp_point) {
-+    v_which_palette = self->private_data.s_decode_id_part1.v_which_palette;
-+    v_num_palette_entries = self->private_data.s_decode_id_part1.v_num_palette_entries;
-+    v_i = self->private_data.s_decode_id_part1.v_i;
-+  }
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    do {
--      if (a_marker == 224u) {
--        if (self->private_impl.f_payload_length >= 5u) {
--          self->private_impl.f_payload_length -= 5u;
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--            uint32_t t_0;
--            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--              t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--              iop_a_src += 4;
--            } else {
--              self->private_data.s_decode_appn[0].scratch = 0;
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--              while (true) {
--                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                  goto suspend;
--                }
--                uint64_t* scratch = &self->private_data.s_decode_appn[0].scratch;
--                uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
--                *scratch <<= 8;
--                *scratch >>= 8;
--                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
--                if (num_bits_0 == 24) {
--                  t_0 = ((uint32_t)(*scratch));
--                  break;
--                }
--                num_bits_0 += 8u;
--                *scratch |= ((uint64_t)(num_bits_0)) << 56;
--              }
--            }
--            v_c32 = t_0;
--          }
--          if (v_c32 != 1179207242u) {
--            self->private_impl.f_payload_length = (65535u & (self->private_impl.f_payload_length + 1u));
--            break;
--          }
--          {
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_0 = *iop_a_src++;
-+      v_flags = t_0;
-+    }
-+    if (((uint8_t)(v_flags & 64u)) != 0u) {
-+      self->private_impl.f_interlace = 4u;
-+    } else {
-+      self->private_impl.f_interlace = 0u;
-+    }
-+    v_which_palette = 1u;
-+    if (((uint8_t)(v_flags & 128u)) != 0u) {
-+      v_num_palette_entries = (((uint32_t)(1u)) << ((uint8_t)(1u + ((uint8_t)(v_flags & 7u)))));
-+      v_i = 0u;
-+      while (v_i < v_num_palette_entries) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+          uint32_t t_1;
-+          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
-+            t_1 = ((uint32_t)(wuffs_base__peek_u24be__no_bounds_check(iop_a_src)));
-+            iop_a_src += 3;
-+          } else {
-+            self->private_data.s_decode_id_part1.scratch = 0;
-             WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint8_t t_1 = *iop_a_src++;
--            v_c8 = t_1;
--          }
--          self->private_impl.f_is_jfif = (v_c8 == 0u);
--        }
--      } else if (a_marker == 238u) {
--        if (self->private_impl.f_payload_length >= 12u) {
--          self->private_impl.f_payload_length -= 12u;
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--            uint32_t t_2;
--            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--              t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--              iop_a_src += 4;
--            } else {
--              self->private_data.s_decode_appn[0].scratch = 0;
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--              while (true) {
--                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                  goto suspend;
--                }
--                uint64_t* scratch = &self->private_data.s_decode_appn[0].scratch;
--                uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
--                *scratch <<= 8;
--                *scratch >>= 8;
--                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
--                if (num_bits_2 == 24) {
--                  t_2 = ((uint32_t)(*scratch));
--                  break;
--                }
--                num_bits_2 += 8u;
--                *scratch |= ((uint64_t)(num_bits_2)) << 56;
--              }
--            }
--            v_c32 = t_2;
--          }
--          if (v_c32 != 1651467329u) {
--            self->private_impl.f_payload_length = (65535u & (self->private_impl.f_payload_length + 8u));
--            break;
--          }
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--            uint32_t t_3;
--            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--              t_3 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--              iop_a_src += 4;
--            } else {
--              self->private_data.s_decode_appn[0].scratch = 0;
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
--              while (true) {
--                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                  goto suspend;
--                }
--                uint64_t* scratch = &self->private_data.s_decode_appn[0].scratch;
--                uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
--                *scratch <<= 8;
--                *scratch >>= 8;
--                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
--                if (num_bits_3 == 24) {
--                  t_3 = ((uint32_t)(*scratch));
--                  break;
--                }
--                num_bits_3 += 8u;
--                *scratch |= ((uint64_t)(num_bits_3)) << 56;
-+            while (true) {
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-               }
--            }
--            v_c32 = t_3;
--          }
--          if ((255u & v_c32) != 101u) {
--            self->private_impl.f_payload_length = (65535u & (self->private_impl.f_payload_length + 4u));
--            break;
--          }
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
--            uint32_t t_4;
--            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--              t_4 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--              iop_a_src += 4;
--            } else {
--              self->private_data.s_decode_appn[0].scratch = 0;
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
--              while (true) {
--                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                  goto suspend;
--                }
--                uint64_t* scratch = &self->private_data.s_decode_appn[0].scratch;
--                uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
--                *scratch <<= 8;
--                *scratch >>= 8;
--                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
--                if (num_bits_4 == 24) {
--                  t_4 = ((uint32_t)(*scratch));
--                  break;
--                }
--                num_bits_4 += 8u;
--                *scratch |= ((uint64_t)(num_bits_4)) << 56;
-+              uint64_t* scratch = &self->private_data.s_decode_id_part1.scratch;
-+              uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
-+              *scratch >>= 8;
-+              *scratch <<= 8;
-+              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
-+              if (num_bits_1 == 16) {
-+                t_1 = ((uint32_t)(*scratch >> 40));
-+                break;
-               }
-+              num_bits_1 += 8u;
-+              *scratch |= ((uint64_t)(num_bits_1));
-             }
--            v_c32 = t_4;
--          }
--          if ((v_c32 >> 24u) == 0u) {
--            self->private_impl.f_is_adobe = 1u;
--          } else {
--            self->private_impl.f_is_adobe = 2u;
-           }
-+          v_argb = t_1;
-         }
-+        v_argb |= 4278190080u;
-+        self->private_data.f_palettes[1u][((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u)));
-+        self->private_data.f_palettes[1u][((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u)));
-+        self->private_data.f_palettes[1u][((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u)));
-+        self->private_data.f_palettes[1u][((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u)));
-+        v_i += 1u;
-       }
--    } while (0);
--    self->private_data.s_decode_appn[0].scratch = self->private_impl.f_payload_length;
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
--    if (self->private_data.s_decode_appn[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--      self->private_data.s_decode_appn[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--      iop_a_src = io2_a_src;
--      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--      goto suspend;
-+      while (v_i < 256u) {
-+        self->private_data.f_palettes[1u][((4u * v_i) + 0u)] = 0u;
-+        self->private_data.f_palettes[1u][((4u * v_i) + 1u)] = 0u;
-+        self->private_data.f_palettes[1u][((4u * v_i) + 2u)] = 0u;
-+        self->private_data.f_palettes[1u][((4u * v_i) + 3u)] = 255u;
-+        v_i += 1u;
-+      }
-+    } else if (self->private_impl.f_quirks[6u] &&  ! self->private_impl.f_has_global_palette) {
-+      status = wuffs_base__make_status(wuffs_gif__error__bad_palette);
-+      goto exit;
-+    } else if (self->private_impl.f_gc_has_transparent_index) {
-+      wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_palettes[1u], 1024), wuffs_base__make_slice_u8(self->private_data.f_palettes[0u], 1024));
-+    } else {
-+      v_which_palette = 0u;
-     }
--    iop_a_src += self->private_data.s_decode_appn[0].scratch;
--    self->private_impl.f_payload_length = 0u;
-+    if (self->private_impl.f_gc_has_transparent_index) {
-+      self->private_data.f_palettes[1u][((4u * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 0u)] = 0u;
-+      self->private_data.f_palettes[1u][((4u * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 1u)] = 0u;
-+      self->private_data.f_palettes[1u][((4u * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 2u)] = 0u;
-+      self->private_data.f_palettes[1u][((4u * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 3u)] = 0u;
-+    }
-+    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
-+        wuffs_base__pixel_buffer__pixel_format(a_dst),
-+        wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
-+        wuffs_base__utility__make_pixel_format(2198077448u),
-+        wuffs_base__make_slice_u8(self->private_data.f_palettes[v_which_palette], 1024),
-+        a_blend);
-+    if ( ! wuffs_base__status__is_ok(&v_status)) {
-+      status = v_status;
-+      if (wuffs_base__status__is_error(&status)) {
-+        goto exit;
-+      } else if (wuffs_base__status__is_suspension(&status)) {
-+        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+        goto exit;
-+      }
-+      goto ok;
-+    }
-+    if (self->private_impl.f_ignored_but_affects_benchmarks) {
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_2 = *iop_a_src++;
-+      v_lw = t_2;
-+    }
-+    if (v_lw > 8u) {
-+      status = wuffs_base__make_status(wuffs_gif__error__bad_literal_width);
-+      goto exit;
-+    }
-+    self->private_impl.f_lzw_pending_literal_width_plus_one = ((uint32_t)(((uint8_t)(1u + v_lw))));
-+    self->private_impl.f_ignored_but_affects_benchmarks = true;
- 
--    goto ok;
-     ok:
--    self->private_impl.p_decode_appn[0] = 0;
-+    self->private_impl.p_decode_id_part1 = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_appn[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.p_decode_id_part1 = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_id_part1.v_which_palette = v_which_palette;
-+  self->private_data.s_decode_id_part1.v_num_palette_entries = v_num_palette_entries;
-+  self->private_data.s_decode_id_part1.v_i = v_i;
- 
-   goto exit;
-   exit:
-@@ -43013,30 +43140,29 @@ wuffs_jpeg__decoder__decode_appn(
-   return status;
- }
- 
--// -------- func jpeg.decoder.decode_sof
-+// -------- func gif.decoder.decode_id_part2
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_jpeg__decoder__decode_sof(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__io_buffer* a_src) {
-+wuffs_gif__decoder__decode_id_part2(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint8_t v_c = 0;
--  uint8_t v_comp_h = 0;
--  uint8_t v_comp_v = 0;
--  uint32_t v_i = 0;
--  uint32_t v_j = 0;
--  bool v_has_h24 = false;
--  bool v_has_h3 = false;
--  bool v_has_v24 = false;
--  bool v_has_v3 = false;
--  uint32_t v_upper_bound = 0;
--  uint64_t v_wh0 = 0;
--  uint64_t v_wh1 = 0;
--  uint64_t v_wh2 = 0;
--  uint64_t v_wh3 = 0;
--  uint64_t v_progressive = 0;
-+  uint64_t v_block_size = 0;
-+  bool v_need_block_size = false;
-+  uint32_t v_n_copied = 0;
-+  uint64_t v_n_compressed = 0;
-+  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
-+  wuffs_base__io_buffer* v_r = &u_r;
-+  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint64_t v_mark = 0;
-+  wuffs_base__status v_copy_status = wuffs_base__make_status(NULL);
- 
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -43049,269 +43175,185 @@ wuffs_jpeg__decoder__decode_sof(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_sof[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_id_part2;
-   if (coro_susp_point) {
--    v_i = self->private_data.s_decode_sof[0].v_i;
-+    v_block_size = self->private_data.s_decode_id_part2.v_block_size;
-+    v_need_block_size = self->private_data.s_decode_id_part2.v_need_block_size;
-   }
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if (self->private_impl.f_payload_length < 6u) {
--      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
--      goto exit;
--    }
--    self->private_impl.f_payload_length -= 6u;
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_0 = *iop_a_src++;
--      v_c = t_0;
--    }
--    if (v_c == 8u) {
--    } else if (v_c == 12u) {
--      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision_12_bits);
--      goto exit;
--    } else if (v_c == 16u) {
--      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision_16_bits);
--      goto exit;
--    } else {
--      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision);
--      goto exit;
--    }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--      uint32_t t_1;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--        t_1 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
--        iop_a_src += 2;
--      } else {
--        self->private_data.s_decode_sof[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--        while (true) {
-+    wuffs_gif__decoder__lzw_init(self);
-+    v_need_block_size = true;
-+    label__outer__continue:;
-+    while (true) {
-+      if (v_need_block_size) {
-+        v_need_block_size = false;
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint64_t* scratch = &self->private_data.s_decode_sof[0].scratch;
--          uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
--          *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
--          if (num_bits_1 == 8) {
--            t_1 = ((uint32_t)(*scratch >> 48));
--            break;
--          }
--          num_bits_1 += 8u;
--          *scratch |= ((uint64_t)(num_bits_1));
-+          uint64_t t_0 = *iop_a_src++;
-+          v_block_size = t_0;
-         }
-       }
--      self->private_impl.f_height = t_1;
--    }
--    if (self->private_impl.f_height == 0u) {
--      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_implicit_height);
--      goto exit;
--    }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--      uint32_t t_2;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--        t_2 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
--        iop_a_src += 2;
--      } else {
--        self->private_data.s_decode_sof[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_decode_sof[0].scratch;
--          uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
--          *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
--          if (num_bits_2 == 8) {
--            t_2 = ((uint32_t)(*scratch >> 48));
--            break;
--          }
--          num_bits_2 += 8u;
--          *scratch |= ((uint64_t)(num_bits_2));
--        }
-+      if (v_block_size == 0u) {
-+        break;
-       }
--      self->private_impl.f_width = t_2;
--    }
--    if (self->private_impl.f_width == 0u) {
--      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
--      goto exit;
--    }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+      while (((uint64_t)(io2_a_src - iop_a_src)) == 0u) {
-         status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
-       }
--      uint8_t t_3 = *iop_a_src++;
--      v_c = t_3;
--    }
--    if ((v_c == 0u) || (v_c > 4u)) {
--      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
--      goto exit;
--    } else if (v_c == 2u) {
--      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_color_model);
--      goto exit;
--    }
--    self->private_impl.f_num_components = ((uint32_t)(v_c));
--    if (self->private_impl.f_payload_length != (3u * self->private_impl.f_num_components)) {
--      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
--      goto exit;
--    }
--    self->private_impl.f_payload_length = 0u;
--    v_i = 0u;
--    while (v_i < self->private_impl.f_num_components) {
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
--        }
--        uint8_t t_4 = *iop_a_src++;
--        self->private_impl.f_components_c[v_i] = t_4;
-+      if (self->private_impl.f_compressed_ri == self->private_impl.f_compressed_wi) {
-+        self->private_impl.f_compressed_ri = 0u;
-+        self->private_impl.f_compressed_wi = 0u;
-       }
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
-+      while (self->private_impl.f_compressed_wi <= 3841u) {
-+        v_n_compressed = wuffs_base__u64__min(v_block_size, ((uint64_t)(io2_a_src - iop_a_src)));
-+        if (v_n_compressed <= 0u) {
-+          break;
-         }
--        uint8_t t_5 = *iop_a_src++;
--        v_c = t_5;
--      }
--      v_comp_h = (v_c >> 4u);
--      v_comp_v = (v_c & 15u);
--      if ((v_comp_h == 0u) ||
--          (v_comp_h > 4u) ||
--          (v_comp_v == 0u) ||
--          (v_comp_v > 4u)) {
--        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
--        goto exit;
--      }
--      self->private_impl.f_components_h[v_i] = v_comp_h;
--      if (self->private_impl.f_max_incl_components_h < self->private_impl.f_components_h[v_i]) {
--        self->private_impl.f_max_incl_components_h = self->private_impl.f_components_h[v_i];
--      }
--      self->private_impl.f_components_v[v_i] = v_comp_v;
--      if (self->private_impl.f_max_incl_components_v < self->private_impl.f_components_v[v_i]) {
--        self->private_impl.f_max_incl_components_v = self->private_impl.f_components_v[v_i];
--      }
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
-+        v_n_copied = wuffs_private_impl__io_reader__limited_copy_u32_to_slice(
-+            &iop_a_src, io2_a_src,((uint32_t)(v_n_compressed)), wuffs_base__make_slice_u8_ij(self->private_data.f_compressed, self->private_impl.f_compressed_wi, 4096));
-+        wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_compressed_wi, ((uint64_t)(v_n_copied)));
-+        wuffs_private_impl__u64__sat_sub_indirect(&v_block_size, ((uint64_t)(v_n_copied)));
-+        if (v_block_size > 0u) {
-+          break;
-         }
--        uint8_t t_6 = *iop_a_src++;
--        v_c = t_6;
--      }
--      if (v_c >= 4u) {
--        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
--        goto exit;
-+        if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+          v_need_block_size = true;
-+          break;
-+        }
-+        v_block_size = ((uint64_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src)));
-+        iop_a_src += 1u;
-       }
--      self->private_impl.f_components_tq[v_i] = v_c;
--      v_j = 0u;
--      while (v_j < v_i) {
--        if (self->private_impl.f_components_c[v_j] == self->private_impl.f_components_c[v_i]) {
--          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
-+      while (true) {
-+        if ((self->private_impl.f_compressed_ri > self->private_impl.f_compressed_wi) || (self->private_impl.f_compressed_wi > 4096u)) {
-+          status = wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_i_o);
-           goto exit;
-         }
--        v_j += 1u;
--      }
--      v_i += 1u;
--    }
--    if (self->private_impl.f_num_components == 1u) {
--      self->private_impl.f_max_incl_components_h = 1u;
--      self->private_impl.f_max_incl_components_v = 1u;
--      self->private_impl.f_components_h[0u] = 1u;
--      self->private_impl.f_components_v[0u] = 1u;
--    } else {
--      v_has_h24 = false;
--      v_has_h3 = false;
--      v_has_v24 = false;
--      v_has_v3 = false;
--      v_i = 0u;
--      while (v_i < self->private_impl.f_num_components) {
--        v_has_h24 = (v_has_h24 || (self->private_impl.f_components_h[v_i] == 2u) || (self->private_impl.f_components_h[v_i] == 4u));
--        v_has_h3 = (v_has_h3 || (self->private_impl.f_components_h[v_i] == 3u));
--        v_has_v24 = (v_has_v24 || (self->private_impl.f_components_v[v_i] == 2u) || (self->private_impl.f_components_v[v_i] == 4u));
--        v_has_v3 = (v_has_v3 || (self->private_impl.f_components_v[v_i] == 3u));
--        v_i += 1u;
--      }
--      if ((v_has_h24 && v_has_h3) || (v_has_v24 && v_has_v3)) {
--        status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_fractional_sampling);
--        goto exit;
--      }
--      if (self->private_impl.f_num_components == 4u) {
--        self->private_impl.f_is_rgb_or_cmyk = (self->private_impl.f_is_adobe < 2u);
--      } else {
--        if (self->private_impl.f_is_jfif) {
--          self->private_impl.f_is_rgb_or_cmyk = false;
--        } else if (self->private_impl.f_is_adobe > 0u) {
--          self->private_impl.f_is_rgb_or_cmyk = (self->private_impl.f_is_adobe == 1u);
--        } else {
--          self->private_impl.f_is_rgb_or_cmyk = ((self->private_impl.f_components_c[0u] == 82u) && (self->private_impl.f_components_c[1u] == 71u) && (self->private_impl.f_components_c[2u] == 66u));
-+        {
-+          wuffs_base__io_buffer* o_0_v_r = v_r;
-+          const uint8_t* o_0_iop_v_r = iop_v_r;
-+          const uint8_t* o_0_io0_v_r = io0_v_r;
-+          const uint8_t* o_0_io1_v_r = io1_v_r;
-+          const uint8_t* o_0_io2_v_r = io2_v_r;
-+          v_r = wuffs_private_impl__io_reader__set(
-+              &u_r,
-+              &iop_v_r,
-+              &io0_v_r,
-+              &io1_v_r,
-+              &io2_v_r,
-+              wuffs_base__make_slice_u8_ij(self->private_data.f_compressed,
-+              self->private_impl.f_compressed_ri,
-+              self->private_impl.f_compressed_wi),
-+              0u);
-+          v_mark = ((uint64_t)(iop_v_r - io0_v_r));
-+          u_r.meta.ri = ((size_t)(iop_v_r - u_r.data.ptr));
-+          wuffs_gif__decoder__lzw_read_from(self, v_r);
-+          iop_v_r = u_r.data.ptr + u_r.meta.ri;
-+          wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_compressed_ri, wuffs_private_impl__io__count_since(v_mark, ((uint64_t)(iop_v_r - io0_v_r))));
-+          v_r = o_0_v_r;
-+          iop_v_r = o_0_iop_v_r;
-+          io0_v_r = o_0_io0_v_r;
-+          io1_v_r = o_0_io1_v_r;
-+          io2_v_r = o_0_io2_v_r;
-         }
--      }
--    }
--    self->private_impl.f_width_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_width, 1u, self->private_impl.f_max_incl_components_h);
--    self->private_impl.f_height_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_height, 1u, self->private_impl.f_max_incl_components_v);
--    v_upper_bound = 65544u;
--    self->private_impl.f_components_workbuf_widths[0u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[0u]))));
--    self->private_impl.f_components_workbuf_widths[1u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[1u]))));
--    self->private_impl.f_components_workbuf_widths[2u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[2u]))));
--    self->private_impl.f_components_workbuf_widths[3u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[3u]))));
--    self->private_impl.f_components_workbuf_heights[0u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[0u]))));
--    self->private_impl.f_components_workbuf_heights[1u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[1u]))));
--    self->private_impl.f_components_workbuf_heights[2u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[2u]))));
--    self->private_impl.f_components_workbuf_heights[3u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[3u]))));
--    v_wh0 = (((uint64_t)(self->private_impl.f_components_workbuf_widths[0u])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[0u])));
--    v_wh1 = (((uint64_t)(self->private_impl.f_components_workbuf_widths[1u])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[1u])));
--    v_wh2 = (((uint64_t)(self->private_impl.f_components_workbuf_widths[2u])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[2u])));
--    v_wh3 = (((uint64_t)(self->private_impl.f_components_workbuf_widths[3u])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[3u])));
--    v_progressive = 0u;
--    if (self->private_impl.f_sof_marker >= 194u) {
--      v_progressive = 2u;
--      v_i = 0u;
--      while (v_i < 4u) {
--        v_j = 0u;
--        while (v_j < 10u) {
--          self->private_impl.f_block_smoothing_lowest_scan_al[v_i][v_j] = 16u;
--          v_j += 1u;
-+        if (self->private_impl.f_lzw_output_ri < self->private_impl.f_lzw_output_wi) {
-+          v_copy_status = wuffs_gif__decoder__copy_to_image_buffer(self, a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_lzw_output,
-+              self->private_impl.f_lzw_output_ri,
-+              self->private_impl.f_lzw_output_wi));
-+          if (wuffs_base__status__is_error(&v_copy_status)) {
-+            status = v_copy_status;
-+            goto exit;
-+          }
-+          self->private_impl.f_lzw_output_ri = 0u;
-+          self->private_impl.f_lzw_output_wi = 0u;
-         }
--        v_i += 1u;
-+        if (self->private_impl.f_lzw_read_from_return_value == 0u) {
-+          self->private_impl.f_ignored_but_affects_benchmarks = false;
-+          if (v_need_block_size || (v_block_size > 0u)) {
-+            self->private_data.s_decode_id_part2.scratch = ((uint32_t)(v_block_size));
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+            if (self->private_data.s_decode_id_part2.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+              self->private_data.s_decode_id_part2.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+              iop_a_src = io2_a_src;
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            iop_a_src += self->private_data.s_decode_id_part2.scratch;
-+            if (a_src) {
-+              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+            }
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+            status = wuffs_gif__decoder__skip_blocks(self, a_src);
-+            if (a_src) {
-+              iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+            }
-+            if (status.repr) {
-+              goto suspend;
-+            }
-+          }
-+          goto label__outer__break;
-+        } else if (self->private_impl.f_lzw_read_from_return_value == 1u) {
-+          continue;
-+        } else if (self->private_impl.f_lzw_read_from_return_value == 2u) {
-+          goto label__outer__continue;
-+        } else if (self->private_impl.f_quirks[3u] && (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1) && (self->private_impl.f_interlace == 0u)) {
-+          if (v_need_block_size || (v_block_size > 0u)) {
-+            self->private_data.s_decode_id_part2.scratch = ((uint32_t)(v_block_size));
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+            if (self->private_data.s_decode_id_part2.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+              self->private_data.s_decode_id_part2.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+              iop_a_src = io2_a_src;
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            iop_a_src += self->private_data.s_decode_id_part2.scratch;
-+            if (a_src) {
-+              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+            }
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+            status = wuffs_gif__decoder__skip_blocks(self, a_src);
-+            if (a_src) {
-+              iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+            }
-+            if (status.repr) {
-+              goto suspend;
-+            }
-+          }
-+          goto label__outer__break;
-+        } else if (self->private_impl.f_lzw_read_from_return_value == 3u) {
-+          status = wuffs_base__make_status(wuffs_gif__error__truncated_input);
-+          goto exit;
-+        } else if (self->private_impl.f_lzw_read_from_return_value == 4u) {
-+          status = wuffs_base__make_status(wuffs_gif__error__bad_lzw_code);
-+          goto exit;
-+        }
-+        status = wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_i_o);
-+        goto exit;
-       }
-     }
--    self->private_impl.f_components_workbuf_offsets[0u] = 0u;
--    self->private_impl.f_components_workbuf_offsets[1u] = (self->private_impl.f_components_workbuf_offsets[0u] + v_wh0);
--    self->private_impl.f_components_workbuf_offsets[2u] = (self->private_impl.f_components_workbuf_offsets[1u] + v_wh1);
--    self->private_impl.f_components_workbuf_offsets[3u] = (self->private_impl.f_components_workbuf_offsets[2u] + v_wh2);
--    self->private_impl.f_components_workbuf_offsets[4u] = (self->private_impl.f_components_workbuf_offsets[3u] + v_wh3);
--    self->private_impl.f_components_workbuf_offsets[5u] = (self->private_impl.f_components_workbuf_offsets[4u] + (v_wh0 * v_progressive));
--    self->private_impl.f_components_workbuf_offsets[6u] = (self->private_impl.f_components_workbuf_offsets[5u] + (v_wh1 * v_progressive));
--    self->private_impl.f_components_workbuf_offsets[7u] = (self->private_impl.f_components_workbuf_offsets[6u] + (v_wh2 * v_progressive));
--    self->private_impl.f_components_workbuf_offsets[8u] = (self->private_impl.f_components_workbuf_offsets[7u] + (v_wh3 * v_progressive));
-+    label__outer__break:;
-+    self->private_impl.f_compressed_ri = 0u;
-+    self->private_impl.f_compressed_wi = 0u;
-+    if ((self->private_impl.f_dst_y < self->private_impl.f_frame_rect_y1) && (self->private_impl.f_frame_rect_x0 != self->private_impl.f_frame_rect_x1) && (self->private_impl.f_frame_rect_y0 != self->private_impl.f_frame_rect_y1)) {
-+      status = wuffs_base__make_status(wuffs_base__error__not_enough_data);
-+      goto exit;
-+    }
- 
--    goto ok;
-     ok:
--    self->private_impl.p_decode_sof[0] = 0;
-+    self->private_impl.p_decode_id_part2 = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_sof[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_decode_sof[0].v_i = v_i;
-+  self->private_impl.p_decode_id_part2 = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_id_part2.v_block_size = v_block_size;
-+  self->private_data.s_decode_id_part2.v_need_block_size = v_need_block_size;
- 
-   goto exit;
-   exit:
-@@ -43322,106 +43364,182 @@ wuffs_jpeg__decoder__decode_sof(
-   return status;
- }
- 
--// -------- func jpeg.decoder.quantize_dimension
-+// -------- func gif.decoder.copy_to_image_buffer
- 
- WUFFS_BASE__GENERATED_C_CODE
--static uint32_t
--wuffs_jpeg__decoder__quantize_dimension(
--    const wuffs_jpeg__decoder* self,
--    uint32_t a_width,
--    uint8_t a_h,
--    uint8_t a_max_incl_h) {
--  uint32_t v_ratio = 0;
-+static wuffs_base__status
-+wuffs_gif__decoder__copy_to_image_buffer(
-+    wuffs_gif__decoder* self,
-+    wuffs_base__pixel_buffer* a_pb,
-+    wuffs_base__slice_u8 a_src) {
-+  wuffs_base__slice_u8 v_dst = {0};
-+  wuffs_base__slice_u8 v_src = {0};
-+  uint64_t v_width_in_bytes = 0;
-+  uint64_t v_n = 0;
-+  uint64_t v_src_ri = 0;
-+  wuffs_base__pixel_format v_pixfmt = {0};
-+  uint32_t v_bytes_per_pixel = 0;
-+  uint32_t v_bits_per_pixel = 0;
-+  wuffs_base__table_u8 v_tab = {0};
-+  uint64_t v_i = 0;
-+  uint64_t v_j = 0;
-+  uint32_t v_replicate_y0 = 0;
-+  uint32_t v_replicate_y1 = 0;
-+  wuffs_base__slice_u8 v_replicate_dst = {0};
-+  wuffs_base__slice_u8 v_replicate_src = {0};
- 
--  v_ratio = 0u;
--  if (a_h > 0u) {
--    v_ratio = ((uint32_t)((a_max_incl_h / a_h)));
-+  v_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_pb);
-+  v_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_pixfmt);
-+  if ((v_bits_per_pixel & 7u) != 0u) {
-+    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-   }
--  if (v_ratio == 1u) {
--    return ((a_width + 7u) / 8u);
--  } else if (v_ratio == 2u) {
--    return ((a_width + 15u) / 16u);
--  } else if (v_ratio == 3u) {
--    return ((a_width + 23u) / 24u);
-+  v_bytes_per_pixel = (v_bits_per_pixel >> 3u);
-+  v_width_in_bytes = ((uint64_t)((self->private_impl.f_width * v_bytes_per_pixel)));
-+  v_tab = wuffs_base__pixel_buffer__plane(a_pb, 0u);
-+  while (v_src_ri < ((uint64_t)(a_src.len))) {
-+    v_src = wuffs_base__slice_u8__subslice_i(a_src, v_src_ri);
-+    if (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1) {
-+      if (self->private_impl.f_quirks[3u]) {
-+        return wuffs_base__make_status(NULL);
-+      }
-+      return wuffs_base__make_status(wuffs_base__error__too_much_data);
-+    }
-+    v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
-+    if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
-+      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, 0u);
-+    } else if (v_width_in_bytes < ((uint64_t)(v_dst.len))) {
-+      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_width_in_bytes);
-+    }
-+    v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_bytes_per_pixel)));
-+    if (v_i < ((uint64_t)(v_dst.len))) {
-+      v_j = (((uint64_t)(self->private_impl.f_frame_rect_x1)) * ((uint64_t)(v_bytes_per_pixel)));
-+      if ((v_i <= v_j) && (v_j <= ((uint64_t)(v_dst.len)))) {
-+        v_dst = wuffs_base__slice_u8__subslice_ij(v_dst, v_i, v_j);
-+      } else {
-+        v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_i);
-+      }
-+      v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024), v_src);
-+      wuffs_private_impl__u64__sat_add_indirect(&v_src_ri, v_n);
-+      wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
-+      self->private_impl.f_dirty_max_excl_y = wuffs_base__u32__max(self->private_impl.f_dirty_max_excl_y, wuffs_base__u32__sat_add(self->private_impl.f_dst_y, 1u));
-+    }
-+    if (self->private_impl.f_frame_rect_x1 <= self->private_impl.f_dst_x) {
-+      self->private_impl.f_dst_x = self->private_impl.f_frame_rect_x0;
-+      if (self->private_impl.f_interlace == 0u) {
-+        wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_y, 1u);
-+        continue;
-+      }
-+      if ((self->private_impl.f_num_decoded_frames_value == 0u) &&  ! self->private_impl.f_gc_has_transparent_index && (self->private_impl.f_interlace > 1u)) {
-+        v_replicate_src = wuffs_private_impl__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
-+        v_replicate_y0 = wuffs_base__u32__sat_add(self->private_impl.f_dst_y, 1u);
-+        v_replicate_y1 = wuffs_base__u32__sat_add(self->private_impl.f_dst_y, ((uint32_t)(WUFFS_GIF__INTERLACE_COUNT[self->private_impl.f_interlace])));
-+        v_replicate_y1 = wuffs_base__u32__min(v_replicate_y1, self->private_impl.f_frame_rect_y1);
-+        while (v_replicate_y0 < v_replicate_y1) {
-+          v_replicate_dst = wuffs_private_impl__table_u8__row_u32(v_tab, v_replicate_y0);
-+          wuffs_private_impl__slice_u8__copy_from_slice(v_replicate_dst, v_replicate_src);
-+          v_replicate_y0 += 1u;
-+        }
-+        self->private_impl.f_dirty_max_excl_y = wuffs_base__u32__max(self->private_impl.f_dirty_max_excl_y, v_replicate_y1);
-+      }
-+      wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_y, ((uint32_t)(WUFFS_GIF__INTERLACE_DELTA[self->private_impl.f_interlace])));
-+      while ((self->private_impl.f_interlace > 0u) && (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1)) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        self->private_impl.f_interlace -= 1u;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+        self->private_impl.f_dst_y = wuffs_base__u32__sat_add(self->private_impl.f_frame_rect_y0, WUFFS_GIF__INTERLACE_START[self->private_impl.f_interlace]);
-+      }
-+      continue;
-+    }
-+    if (((uint64_t)(a_src.len)) == v_src_ri) {
-+      break;
-+    } else if (((uint64_t)(a_src.len)) < v_src_ri) {
-+      return wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_i_o);
-+    }
-+    v_n = ((uint64_t)((self->private_impl.f_frame_rect_x1 - self->private_impl.f_dst_x)));
-+    v_n = wuffs_base__u64__min(v_n, (((uint64_t)(a_src.len)) - v_src_ri));
-+    wuffs_private_impl__u64__sat_add_indirect(&v_src_ri, v_n);
-+    wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
-+    if (self->private_impl.f_frame_rect_x1 <= self->private_impl.f_dst_x) {
-+      self->private_impl.f_dst_x = self->private_impl.f_frame_rect_x0;
-+      wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_y, ((uint32_t)(WUFFS_GIF__INTERLACE_DELTA[self->private_impl.f_interlace])));
-+      while ((self->private_impl.f_interlace > 0u) && (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1)) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        self->private_impl.f_interlace -= 1u;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+        self->private_impl.f_dst_y = wuffs_base__u32__sat_add(self->private_impl.f_frame_rect_y0, WUFFS_GIF__INTERLACE_START[self->private_impl.f_interlace]);
-+      }
-+      continue;
-+    }
-+    if (v_src_ri != ((uint64_t)(a_src.len))) {
-+      return wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_i_o);
-+    }
-+    break;
-   }
--  return ((a_width + 31u) / 32u);
-+  return wuffs_base__make_status(NULL);
- }
- 
--// -------- func jpeg.decoder.decode_frame_config
-+// -------- func gif.decoder.lzw_init
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_jpeg__decoder__decode_frame_config(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__frame_config* a_dst,
--    wuffs_base__io_buffer* a_src) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--  if (!a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 2)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
--  }
--  self->private_impl.active_coroutine = 0;
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
--
--  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    while (true) {
--      {
--        wuffs_base__status t_0 = wuffs_jpeg__decoder__do_decode_frame_config(self, a_dst, a_src);
--        v_status = t_0;
--      }
--      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_jpeg__error__truncated_input);
--        goto exit;
--      }
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
--    }
-+static wuffs_base__empty_struct
-+wuffs_gif__decoder__lzw_init(
-+    wuffs_gif__decoder* self) {
-+  uint32_t v_i = 0;
- 
--    ok:
--    self->private_impl.p_decode_frame_config[0] = 0;
--    goto exit;
-+  self->private_impl.f_lzw_literal_width = 8u;
-+  if (self->private_impl.f_lzw_pending_literal_width_plus_one > 0u) {
-+    self->private_impl.f_lzw_literal_width = (self->private_impl.f_lzw_pending_literal_width_plus_one - 1u);
-   }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
--
--  goto exit;
--  exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  self->private_impl.f_lzw_clear_code = (((uint32_t)(1u)) << self->private_impl.f_lzw_literal_width);
-+  self->private_impl.f_lzw_end_code = (self->private_impl.f_lzw_clear_code + 1u);
-+  self->private_impl.f_lzw_save_code = self->private_impl.f_lzw_end_code;
-+  self->private_impl.f_lzw_prev_code = self->private_impl.f_lzw_end_code;
-+  self->private_impl.f_lzw_width = (self->private_impl.f_lzw_literal_width + 1u);
-+  self->private_impl.f_lzw_bits = 0u;
-+  self->private_impl.f_lzw_n_bits = 0u;
-+  self->private_impl.f_lzw_output_ri = 0u;
-+  self->private_impl.f_lzw_output_wi = 0u;
-+  v_i = 0u;
-+  while (v_i < self->private_impl.f_lzw_clear_code) {
-+    self->private_data.f_lzw_lm1s[v_i] = 0u;
-+    self->private_data.f_lzw_suffixes[v_i][0u] = ((uint8_t)(v_i));
-+    v_i += 1u;
-   }
--  return status;
-+  return wuffs_base__make_empty_struct();
- }
- 
--// -------- func jpeg.decoder.do_decode_frame_config
-+// -------- func gif.decoder.lzw_read_from
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_jpeg__decoder__do_decode_frame_config(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__frame_config* a_dst,
-+static wuffs_base__empty_struct
-+wuffs_gif__decoder__lzw_read_from(
-+    wuffs_gif__decoder* self,
-     wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+  uint32_t v_clear_code = 0;
-+  uint32_t v_end_code = 0;
-+  uint32_t v_save_code = 0;
-+  uint32_t v_prev_code = 0;
-+  uint32_t v_width = 0;
-+  uint32_t v_bits = 0;
-+  uint32_t v_n_bits = 0;
-+  uint32_t v_output_wi = 0;
-+  uint32_t v_code = 0;
-+  uint32_t v_c = 0;
-+  uint32_t v_o = 0;
-+  uint32_t v_steps = 0;
-+  uint8_t v_first_byte = 0;
-+  uint16_t v_lm1_b = 0;
-+  uint16_t v_lm1_a = 0;
- 
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -43434,83 +43552,370 @@ wuffs_jpeg__decoder__do_decode_frame_config(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    if (self->private_impl.f_call_sequence == 32u) {
--    } else if (self->private_impl.f_call_sequence < 32u) {
--      if (a_src) {
--        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  v_clear_code = self->private_impl.f_lzw_clear_code;
-+  v_end_code = self->private_impl.f_lzw_end_code;
-+  v_save_code = self->private_impl.f_lzw_save_code;
-+  v_prev_code = self->private_impl.f_lzw_prev_code;
-+  v_width = self->private_impl.f_lzw_width;
-+  v_bits = self->private_impl.f_lzw_bits;
-+  v_n_bits = self->private_impl.f_lzw_n_bits;
-+  v_output_wi = self->private_impl.f_lzw_output_wi;
-+  while (true) {
-+    if (v_n_bits < v_width) {
-+      if (((uint64_t)(io2_a_src - iop_a_src)) >= 4u) {
-+        v_bits |= ((uint32_t)(wuffs_base__peek_u32le__no_bounds_check(iop_a_src) << v_n_bits));
-+        iop_a_src += ((31u - v_n_bits) >> 3u);
-+        v_n_bits |= 24u;
-+      } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+        if (a_src && a_src->meta.closed) {
-+          self->private_impl.f_lzw_read_from_return_value = 3u;
-+        } else {
-+          self->private_impl.f_lzw_read_from_return_value = 2u;
-+        }
-+        break;
-+      } else {
-+        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
-+        iop_a_src += 1u;
-+        v_n_bits += 8u;
-+        if (v_n_bits >= v_width) {
-+        } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+          if (a_src && a_src->meta.closed) {
-+            self->private_impl.f_lzw_read_from_return_value = 3u;
-+          } else {
-+            self->private_impl.f_lzw_read_from_return_value = 2u;
-+          }
-+          break;
-+        } else {
-+          v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
-+          iop_a_src += 1u;
-+          v_n_bits += 8u;
-+          if (v_n_bits < v_width) {
-+            self->private_impl.f_lzw_read_from_return_value = 5u;
-+            break;
-+          }
-+        }
-       }
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      status = wuffs_jpeg__decoder__do_decode_image_config(self, NULL, a_src);
--      if (a_src) {
--        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+    }
-+    v_code = ((v_bits) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U32(v_width));
-+    v_bits >>= v_width;
-+    v_n_bits -= v_width;
-+    if (v_code < v_clear_code) {
-+      self->private_data.f_lzw_output[v_output_wi] = ((uint8_t)(v_code));
-+      v_output_wi = ((v_output_wi + 1u) & 8191u);
-+      if (v_save_code <= 4095u) {
-+        v_lm1_a = ((uint16_t)(((uint16_t)(self->private_data.f_lzw_lm1s[v_prev_code] + 1u)) & 4095u));
-+        self->private_data.f_lzw_lm1s[v_save_code] = v_lm1_a;
-+        if (((uint16_t)(v_lm1_a % 8u)) != 0u) {
-+          self->private_impl.f_lzw_prefixes[v_save_code] = self->private_impl.f_lzw_prefixes[v_prev_code];
-+          memcpy(self->private_data.f_lzw_suffixes[v_save_code],self->private_data.f_lzw_suffixes[v_prev_code], sizeof(self->private_data.f_lzw_suffixes[v_save_code]));
-+          self->private_data.f_lzw_suffixes[v_save_code][((uint16_t)(v_lm1_a % 8u))] = ((uint8_t)(v_code));
-+        } else {
-+          self->private_impl.f_lzw_prefixes[v_save_code] = ((uint16_t)(v_prev_code));
-+          self->private_data.f_lzw_suffixes[v_save_code][0u] = ((uint8_t)(v_code));
-+        }
-+        v_save_code += 1u;
-+        if (v_width < 12u) {
-+          v_width += (1u & (v_save_code >> v_width));
-+        }
-+        v_prev_code = v_code;
-       }
--      if (status.repr) {
--        goto suspend;
-+    } else if (v_code <= v_end_code) {
-+      if (v_code == v_end_code) {
-+        self->private_impl.f_lzw_read_from_return_value = 0u;
-+        break;
-       }
--    } else if (self->private_impl.f_call_sequence == 40u) {
--      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
--        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
--        goto exit;
-+      v_save_code = v_end_code;
-+      v_prev_code = v_end_code;
-+      v_width = (self->private_impl.f_lzw_literal_width + 1u);
-+    } else if (v_code <= v_save_code) {
-+      v_c = v_code;
-+      if (v_code == v_save_code) {
-+        v_c = v_prev_code;
-+      }
-+      v_o = ((v_output_wi + (((uint32_t)(self->private_data.f_lzw_lm1s[v_c])) & 4294967288u)) & 8191u);
-+      v_output_wi = ((v_output_wi + 1u + ((uint32_t)(self->private_data.f_lzw_lm1s[v_c]))) & 8191u);
-+      v_steps = (((uint32_t)(self->private_data.f_lzw_lm1s[v_c])) >> 3u);
-+      while (true) {
-+        memcpy((self->private_data.f_lzw_output)+(v_o), (self->private_data.f_lzw_suffixes[v_c]), 8u);
-+        if (v_steps <= 0u) {
-+          break;
-+        }
-+        v_steps -= 1u;
-+        v_o = (((uint32_t)(v_o - 8u)) & 8191u);
-+        v_c = ((uint32_t)(self->private_impl.f_lzw_prefixes[v_c]));
-+      }
-+      v_first_byte = self->private_data.f_lzw_suffixes[v_c][0u];
-+      if (v_code == v_save_code) {
-+        self->private_data.f_lzw_output[v_output_wi] = v_first_byte;
-+        v_output_wi = ((v_output_wi + 1u) & 8191u);
-+      }
-+      if (v_save_code <= 4095u) {
-+        v_lm1_b = ((uint16_t)(((uint16_t)(self->private_data.f_lzw_lm1s[v_prev_code] + 1u)) & 4095u));
-+        self->private_data.f_lzw_lm1s[v_save_code] = v_lm1_b;
-+        if (((uint16_t)(v_lm1_b % 8u)) != 0u) {
-+          self->private_impl.f_lzw_prefixes[v_save_code] = self->private_impl.f_lzw_prefixes[v_prev_code];
-+          memcpy(self->private_data.f_lzw_suffixes[v_save_code],self->private_data.f_lzw_suffixes[v_prev_code], sizeof(self->private_data.f_lzw_suffixes[v_save_code]));
-+          self->private_data.f_lzw_suffixes[v_save_code][((uint16_t)(v_lm1_b % 8u))] = v_first_byte;
-+        } else {
-+          self->private_impl.f_lzw_prefixes[v_save_code] = ((uint16_t)(v_prev_code));
-+          self->private_data.f_lzw_suffixes[v_save_code][0u] = ((uint8_t)(v_first_byte));
-+        }
-+        v_save_code += 1u;
-+        if (v_width < 12u) {
-+          v_width += (1u & (v_save_code >> v_width));
-+        }
-+        v_prev_code = v_code;
-       }
--    } else if (self->private_impl.f_call_sequence == 64u) {
--      self->private_impl.f_call_sequence = 96u;
--      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--      goto ok;
-     } else {
--      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--      goto ok;
-+      self->private_impl.f_lzw_read_from_return_value = 4u;
-+      break;
-     }
--    if (a_dst != NULL) {
--      wuffs_base__frame_config__set(
--          a_dst,
--          wuffs_base__utility__make_rect_ie_u32(
--          0u,
--          0u,
--          self->private_impl.f_width,
--          self->private_impl.f_height),
--          ((wuffs_base__flicks)(0u)),
--          0u,
--          self->private_impl.f_frame_config_io_position,
--          0u,
--          true,
--          false,
--          4278190080u);
-+    if (v_output_wi > 4095u) {
-+      self->private_impl.f_lzw_read_from_return_value = 1u;
-+      break;
-     }
--    self->private_impl.f_call_sequence = 64u;
--
--    ok:
--    self->private_impl.p_do_decode_frame_config[0] = 0;
--    goto exit;
-   }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--
--  goto exit;
--  exit:
-+  if (self->private_impl.f_lzw_read_from_return_value != 2u) {
-+    while (v_n_bits >= 8u) {
-+      v_n_bits -= 8u;
-+      if (iop_a_src > io1_a_src) {
-+        iop_a_src--;
-+      } else {
-+        self->private_impl.f_lzw_read_from_return_value = 5u;
-+        break;
-+      }
-+    }
-+  }
-+  self->private_impl.f_lzw_save_code = v_save_code;
-+  self->private_impl.f_lzw_prev_code = v_prev_code;
-+  self->private_impl.f_lzw_width = v_width;
-+  self->private_impl.f_lzw_bits = v_bits;
-+  self->private_impl.f_lzw_n_bits = v_n_bits;
-+  self->private_impl.f_lzw_output_wi = v_output_wi;
-   if (a_src && a_src->data.ptr) {
-     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
- 
--  return status;
-+  return wuffs_base__make_empty_struct();
- }
- 
--// -------- func jpeg.decoder.decode_frame
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GIF)
-+
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GZIP)
-+
-+// ---------------- Status Codes Implementations
-+
-+const char wuffs_gzip__error__bad_checksum[] = "#gzip: bad checksum";
-+const char wuffs_gzip__error__bad_compression_method[] = "#gzip: bad compression method";
-+const char wuffs_gzip__error__bad_encoding_flags[] = "#gzip: bad encoding flags";
-+const char wuffs_gzip__error__bad_header[] = "#gzip: bad header";
-+const char wuffs_gzip__error__truncated_input[] = "#gzip: truncated input";
-+
-+// ---------------- Private Consts
-+
-+// ---------------- Private Initializer Prototypes
-+
-+// ---------------- Private Function Prototypes
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_jpeg__decoder__decode_frame(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
-+static wuffs_base__status
-+wuffs_gzip__decoder__do_transform_io(
-+    wuffs_gzip__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-     wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts) {
-+    wuffs_base__slice_u8 a_workbuf);
-+
-+// ---------------- VTables
-+
-+const wuffs_base__io_transformer__func_ptrs
-+wuffs_gzip__decoder__func_ptrs_for__wuffs_base__io_transformer = {
-+  (wuffs_base__optional_u63(*)(const void*))(&wuffs_gzip__decoder__dst_history_retain_length),
-+  (uint64_t(*)(const void*,
-+      uint32_t))(&wuffs_gzip__decoder__get_quirk),
-+  (wuffs_base__status(*)(void*,
-+      uint32_t,
-+      uint64_t))(&wuffs_gzip__decoder__set_quirk),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__slice_u8))(&wuffs_gzip__decoder__transform_io),
-+  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_gzip__decoder__workbuf_len),
-+};
-+
-+// ---------------- Initializer Implementations
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_gzip__decoder__initialize(
-+    wuffs_gzip__decoder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options){
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (sizeof(*self) != sizeof_star_self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  }
-+  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
-+      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+  }
-+
-+  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
-+    // The whole point of this if-check is to detect an uninitialized *self.
-+    // We disable the warning on GCC. Clang-5.0 does not have this warning.
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+#endif
-+    if (self->private_impl.magic != 0) {
-+      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+    }
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+  } else {
-+    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
-+      memset(self, 0, sizeof(*self));
-+      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-+    } else {
-+      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+    }
-+  }
-+
-+  {
-+    wuffs_base__status z = wuffs_crc32__ieee_hasher__initialize(
-+        &self->private_data.f_checksum, sizeof(self->private_data.f_checksum), WUFFS_VERSION, options);
-+    if (z.repr) {
-+      return z;
-+    }
-+  }
-+  {
-+    wuffs_base__status z = wuffs_deflate__decoder__initialize(
-+        &self->private_data.f_flate, sizeof(self->private_data.f_flate), WUFFS_VERSION, options);
-+    if (z.repr) {
-+      return z;
-+    }
-+  }
-+  self->private_impl.magic = WUFFS_BASE__MAGIC;
-+  self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
-+      wuffs_base__io_transformer__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
-+      (const void*)(&wuffs_gzip__decoder__func_ptrs_for__wuffs_base__io_transformer);
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+wuffs_gzip__decoder*
-+wuffs_gzip__decoder__alloc(void) {
-+  wuffs_gzip__decoder* x =
-+      (wuffs_gzip__decoder*)(calloc(1, sizeof(wuffs_gzip__decoder)));
-+  if (!x) {
-+    return NULL;
-+  }
-+  if (wuffs_gzip__decoder__initialize(
-+      x, sizeof(wuffs_gzip__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+    free(x);
-+    return NULL;
-+  }
-+  return x;
-+}
-+
-+size_t
-+sizeof__wuffs_gzip__decoder(void) {
-+  return sizeof(wuffs_gzip__decoder);
-+}
-+
-+// ---------------- Function Implementations
-+
-+// -------- func gzip.decoder.get_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_gzip__decoder__get_quirk(
-+    const wuffs_gzip__decoder* self,
-+    uint32_t a_key) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  if ((a_key == 1u) && self->private_impl.f_ignore_checksum) {
-+    return 1u;
-+  }
-+  return 0u;
-+}
-+
-+// -------- func gzip.decoder.set_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_gzip__decoder__set_quirk(
-+    wuffs_gzip__decoder* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+
-+  if (a_key == 1u) {
-+    self->private_impl.f_ignore_checksum = (a_value > 0u);
-+    return wuffs_base__make_status(NULL);
-+  }
-+  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+}
-+
-+// -------- func gzip.decoder.dst_history_retain_length
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
-+wuffs_gzip__decoder__dst_history_retain_length(
-+    const wuffs_gzip__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__make_optional_u63(false, 0u);
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__make_optional_u63(false, 0u);
-+  }
-+
-+  return wuffs_base__utility__make_optional_u63(true, 0u);
-+}
-+
-+// -------- func gzip.decoder.workbuf_len
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_gzip__decoder__workbuf_len(
-+    const wuffs_gzip__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+
-+  return wuffs_base__utility__make_range_ii_u64(1u, 1u);
-+}
-+
-+// -------- func gzip.decoder.transform_io
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_gzip__decoder__transform_io(
-+    wuffs_gzip__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-   if (!self) {
-     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
-@@ -43525,65 +43930,41 @@ wuffs_jpeg__decoder__decode_frame(
-     return wuffs_base__make_status(wuffs_base__error__bad_argument);
-   }
-   if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 3)) {
-+      (self->private_impl.active_coroutine != 1)) {
-     self->private_impl.magic = WUFFS_BASE__DISABLED;
-     return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-   }
-   self->private_impl.active_coroutine = 0;
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  wuffs_base__status v_ddf_status = wuffs_base__make_status(NULL);
--  wuffs_base__status v_swizzle_status = wuffs_base__make_status(NULL);
--  uint32_t v_scan_count = 0;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_frame[0];
-+  uint32_t coro_susp_point = self->private_impl.p_transform_io;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
-     while (true) {
--      v_scan_count = self->private_impl.f_scan_count;
-       {
--        wuffs_base__status t_0 = wuffs_jpeg__decoder__do_decode_frame(self,
--            a_dst,
--            a_src,
--            a_blend,
--            a_workbuf,
--            a_opts);
--        v_ddf_status = t_0;
--      }
--      if ((v_ddf_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        v_ddf_status = wuffs_base__make_status(wuffs_jpeg__error__truncated_input);
-+        wuffs_base__status t_0 = wuffs_gzip__decoder__do_transform_io(self, a_dst, a_src, a_workbuf);
-+        v_status = t_0;
-       }
--      if (wuffs_base__status__is_error(&v_ddf_status) || (v_scan_count < self->private_impl.f_scan_count)) {
--        if (self->private_impl.f_sof_marker >= 194u) {
--          wuffs_jpeg__decoder__apply_progressive_idct(self, a_workbuf);
--        }
--        if (self->private_impl.f_num_components == 1u) {
--          v_swizzle_status = wuffs_jpeg__decoder__swizzle_gray(self, a_dst, a_workbuf);
--        } else {
--          v_swizzle_status = wuffs_jpeg__decoder__swizzle_colorful(self, a_dst, a_workbuf);
--        }
--        if (wuffs_base__status__is_error(&v_ddf_status)) {
--          status = v_ddf_status;
--          goto exit;
--        } else if (wuffs_base__status__is_error(&v_swizzle_status)) {
--          status = v_swizzle_status;
--          goto exit;
--        }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_gzip__error__truncated_input);
-+        goto exit;
-       }
--      status = v_ddf_status;
-+      status = v_status;
-       WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-     }
- 
-     ok:
--    self->private_impl.p_decode_frame[0] = 0;
-+    self->private_impl.p_transform_io = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
-+  self->private_impl.p_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
- 
-   goto exit;
-   exit:
-@@ -43593,24 +43974,40 @@ wuffs_jpeg__decoder__decode_frame(
-   return status;
- }
- 
--// -------- func jpeg.decoder.do_decode_frame
-+// -------- func gzip.decoder.do_transform_io
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_jpeg__decoder__do_decode_frame(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
-+wuffs_gzip__decoder__do_transform_io(
-+    wuffs_gzip__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-     wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts) {
-+    wuffs_base__slice_u8 a_workbuf) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint32_t v_pixfmt = 0;
-+  uint8_t v_c8 = 0;
-+  uint8_t v_flags = 0;
-+  uint16_t v_xlen = 0;
-+  uint64_t v_mark = 0;
-+  uint32_t v_checksum_have = 0;
-+  uint32_t v_decoded_length_have = 0;
-   wuffs_base__status v_status = wuffs_base__make_status(NULL);
--  uint8_t v_c = 0;
--  uint8_t v_marker = 0;
-+  uint32_t v_checksum_want = 0;
-+  uint32_t v_decoded_length_want = 0;
- 
-+  uint8_t* iop_a_dst = NULL;
-+  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-+    }
-+  }
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -43622,236 +44019,269 @@ wuffs_jpeg__decoder__do_decode_frame(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0];
-+  uint32_t coro_susp_point = self->private_impl.p_do_transform_io;
-   if (coro_susp_point) {
--    v_marker = self->private_data.s_do_decode_frame[0].v_marker;
-+    v_flags = self->private_data.s_do_transform_io.v_flags;
-+    v_checksum_have = self->private_data.s_do_transform_io.v_checksum_have;
-+    v_decoded_length_have = self->private_data.s_do_transform_io.v_decoded_length_have;
-+    v_checksum_want = self->private_data.s_do_transform_io.v_checksum_want;
-   }
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if (self->private_impl.f_call_sequence == 64u) {
--    } else if (self->private_impl.f_call_sequence < 64u) {
--      if (a_src) {
--        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--      }
-+    {
-       WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      status = wuffs_jpeg__decoder__do_decode_frame_config(self, NULL, a_src);
--      if (a_src) {
--        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-       }
--      if (status.repr) {
-+      uint8_t t_0 = *iop_a_src++;
-+      v_c8 = t_0;
-+    }
-+    if (v_c8 != 31u) {
-+      status = wuffs_base__make_status(wuffs_gzip__error__bad_header);
-+      goto exit;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-         goto suspend;
-       }
--    } else {
--      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--      goto ok;
-+      uint8_t t_1 = *iop_a_src++;
-+      v_c8 = t_1;
-     }
--    v_pixfmt = 536870920u;
--    if (self->private_impl.f_num_components > 1u) {
--      v_pixfmt = 2415954056u;
-+    if (v_c8 != 139u) {
-+      status = wuffs_base__make_status(wuffs_gzip__error__bad_header);
-+      goto exit;
-     }
--    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
--        wuffs_base__pixel_buffer__pixel_format(a_dst),
--        wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
--        wuffs_base__utility__make_pixel_format(v_pixfmt),
--        wuffs_base__utility__empty_slice_u8(),
--        a_blend);
--    if ( ! wuffs_base__status__is_ok(&v_status)) {
--      status = v_status;
--      if (wuffs_base__status__is_error(&status)) {
--        goto exit;
--      } else if (wuffs_base__status__is_suspension(&status)) {
--        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
--        goto exit;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-       }
--      goto ok;
-+      uint8_t t_2 = *iop_a_src++;
-+      v_c8 = t_2;
-     }
--    if (self->private_impl.f_components_workbuf_offsets[8u] > ((uint64_t)(a_workbuf.len))) {
--      status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
-+    if (v_c8 != 8u) {
-+      status = wuffs_base__make_status(wuffs_gzip__error__bad_compression_method);
-       goto exit;
--    } else if (self->private_impl.f_components_workbuf_offsets[4u] < self->private_impl.f_components_workbuf_offsets[8u]) {
--      wuffs_base__bulk_memset(a_workbuf.ptr + self->private_impl.f_components_workbuf_offsets[4u], (self->private_impl.f_components_workbuf_offsets[8u] - self->private_impl.f_components_workbuf_offsets[4u]), 0u);
-     }
--    if (self->private_impl.f_components_workbuf_offsets[4u] <= ((uint64_t)(a_workbuf.len))) {
--      wuffs_base__bulk_memset(a_workbuf.ptr, self->private_impl.f_components_workbuf_offsets[4u], 128u);
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_3 = *iop_a_src++;
-+      v_flags = t_3;
-     }
--    while (true) {
-+    self->private_data.s_do_transform_io.scratch = 6u;
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+    if (self->private_data.s_do_transform_io.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+      self->private_data.s_do_transform_io.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+      iop_a_src = io2_a_src;
-+      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+      goto suspend;
-+    }
-+    iop_a_src += self->private_data.s_do_transform_io.scratch;
-+    if (((uint8_t)(v_flags & 4u)) != 0u) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+        uint16_t t_4;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+          t_4 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
-+          iop_a_src += 2;
-+        } else {
-+          self->private_data.s_do_transform_io.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+            uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
-+            if (num_bits_4 == 8) {
-+              t_4 = ((uint16_t)(*scratch));
-+              break;
-+            }
-+            num_bits_4 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_4)) << 56;
-+          }
-+        }
-+        v_xlen = t_4;
-+      }
-+      self->private_data.s_do_transform_io.scratch = ((uint32_t)(v_xlen));
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+      if (self->private_data.s_do_transform_io.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+        self->private_data.s_do_transform_io.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+        iop_a_src = io2_a_src;
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      iop_a_src += self->private_data.s_do_transform_io.scratch;
-+    }
-+    if (((uint8_t)(v_flags & 8u)) != 0u) {
-       while (true) {
-         {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint8_t t_0 = *iop_a_src++;
--          v_c = t_0;
-+          uint8_t t_5 = *iop_a_src++;
-+          v_c8 = t_5;
-         }
--        if (v_c == 255u) {
-+        if (v_c8 == 0u) {
-           break;
-         }
-       }
-+    }
-+    if (((uint8_t)(v_flags & 16u)) != 0u) {
-       while (true) {
-         {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint8_t t_1 = *iop_a_src++;
--          v_c = t_1;
-+          uint8_t t_6 = *iop_a_src++;
-+          v_c8 = t_6;
-         }
--        if (v_c != 255u) {
--          v_marker = v_c;
-+        if (v_c8 == 0u) {
-           break;
-         }
-       }
--      if (v_marker == 0u) {
--        continue;
--      } else if ((208u <= v_marker) && (v_marker <= 217u)) {
--        if (v_marker <= 215u) {
--          continue;
-+    }
-+    if (((uint8_t)(v_flags & 2u)) != 0u) {
-+      self->private_data.s_do_transform_io.scratch = 2u;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
-+      if (self->private_data.s_do_transform_io.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+        self->private_data.s_do_transform_io.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+        iop_a_src = io2_a_src;
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      iop_a_src += self->private_data.s_do_transform_io.scratch;
-+    }
-+    if (((uint8_t)(v_flags & 224u)) != 0u) {
-+      status = wuffs_base__make_status(wuffs_gzip__error__bad_encoding_flags);
-+      goto exit;
-+    }
-+    while (true) {
-+      v_mark = ((uint64_t)(iop_a_dst - io0_a_dst));
-+      {
-+        if (a_dst) {
-+          a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-         }
--      } else {
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--          uint32_t t_2;
--          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--            t_2 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
--            iop_a_src += 2;
--          } else {
--            self->private_data.s_do_decode_frame[0].scratch = 0;
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--            while (true) {
--              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                goto suspend;
--              }
--              uint64_t* scratch = &self->private_data.s_do_decode_frame[0].scratch;
--              uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu));
--              *scratch >>= 8;
--              *scratch <<= 8;
--              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
--              if (num_bits_2 == 8) {
--                t_2 = ((uint32_t)(*scratch >> 48));
--                break;
--              }
--              num_bits_2 += 8u;
--              *scratch |= ((uint64_t)(num_bits_2));
--            }
--          }
--          self->private_impl.f_payload_length = t_2;
-+        if (a_src) {
-+          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-         }
--        if (self->private_impl.f_payload_length < 2u) {
--          status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker);
--          goto exit;
-+        wuffs_base__status t_7 = wuffs_deflate__decoder__transform_io(&self->private_data.f_flate, a_dst, a_src, a_workbuf);
-+        v_status = t_7;
-+        if (a_dst) {
-+          iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
-+        }
-+        if (a_src) {
-+          iop_a_src = a_src->data.ptr + a_src->meta.ri;
-         }
--        self->private_impl.f_payload_length -= 2u;
-       }
--      if (v_marker < 192u) {
--        status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
--        goto exit;
--      } else if (v_marker < 208u) {
--        if (v_marker == 196u) {
--          if (a_src) {
--            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--          }
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--          status = wuffs_jpeg__decoder__decode_dht(self, a_src);
--          if (a_src) {
--            iop_a_src = a_src->data.ptr + a_src->meta.ri;
--          }
--          if (status.repr) {
-+      if ( ! self->private_impl.f_ignore_checksum) {
-+        v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_checksum, wuffs_private_impl__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
-+        v_decoded_length_have += ((uint32_t)(wuffs_private_impl__io__count_since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)))));
-+      }
-+      if (wuffs_base__status__is_ok(&v_status)) {
-+        break;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(12);
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
-+      uint32_t t_8;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_8 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_do_transform_io.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          continue;
--        } else if (v_marker == 200u) {
--          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
--          goto exit;
--        }
--        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
--        goto exit;
--      } else if (v_marker < 224u) {
--        if (v_marker < 217u) {
--          status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker);
--          goto exit;
--        } else if (v_marker == 217u) {
--          break;
--        } else if (v_marker == 218u) {
--          if (a_src) {
--            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--          }
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
--          status = wuffs_jpeg__decoder__decode_sos(self, a_src, a_workbuf);
--          if (a_src) {
--            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+          uint32_t num_bits_8 = ((uint32_t)(*scratch >> 56));
-+          *scratch <<= 8;
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_8;
-+          if (num_bits_8 == 24) {
-+            t_8 = ((uint32_t)(*scratch));
-+            break;
-           }
--          if (status.repr) {
-+          num_bits_8 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_8)) << 56;
-+        }
-+      }
-+      v_checksum_want = t_8;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
-+      uint32_t t_9;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_9 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_do_transform_io.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          continue;
--        } else if (v_marker == 219u) {
--          if (a_src) {
--            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--          }
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
--          status = wuffs_jpeg__decoder__decode_dqt(self, a_src);
--          if (a_src) {
--            iop_a_src = a_src->data.ptr + a_src->meta.ri;
--          }
--          if (status.repr) {
--            goto suspend;
--          }
--          continue;
--        } else if (v_marker == 221u) {
--          if (a_src) {
--            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--          }
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
--          status = wuffs_jpeg__decoder__decode_dri(self, a_src);
--          if (a_src) {
--            iop_a_src = a_src->data.ptr + a_src->meta.ri;
--          }
--          if (status.repr) {
--            goto suspend;
-+          uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+          uint32_t num_bits_9 = ((uint32_t)(*scratch >> 56));
-+          *scratch <<= 8;
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_9;
-+          if (num_bits_9 == 24) {
-+            t_9 = ((uint32_t)(*scratch));
-+            break;
-           }
--          continue;
--        } else {
--          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
--          goto exit;
--        }
--      } else if (v_marker < 240u) {
--      } else {
--        if (v_marker == 254u) {
--        } else {
--          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
--          goto exit;
-+          num_bits_9 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_9)) << 56;
-         }
-       }
--      self->private_data.s_do_decode_frame[0].scratch = self->private_impl.f_payload_length;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
--      if (self->private_data.s_do_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--        self->private_data.s_do_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--        iop_a_src = io2_a_src;
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      iop_a_src += self->private_data.s_do_decode_frame[0].scratch;
--      self->private_impl.f_payload_length = 0u;
-+      v_decoded_length_want = t_9;
-+    }
-+    if ( ! self->private_impl.f_ignore_checksum && ((v_checksum_have != v_checksum_want) || (v_decoded_length_have != v_decoded_length_want))) {
-+      status = wuffs_base__make_status(wuffs_gzip__error__bad_checksum);
-+      goto exit;
-     }
--    self->private_impl.f_call_sequence = 96u;
- 
-     ok:
--    self->private_impl.p_do_decode_frame[0] = 0;
-+    self->private_impl.p_do_transform_io = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_do_decode_frame[0].v_marker = v_marker;
-+  self->private_impl.p_do_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_do_transform_io.v_flags = v_flags;
-+  self->private_data.s_do_transform_io.v_checksum_have = v_checksum_have;
-+  self->private_data.s_do_transform_io.v_decoded_length_have = v_decoded_length_have;
-+  self->private_data.s_do_transform_io.v_checksum_want = v_checksum_want;
- 
-   goto exit;
-   exit:
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+  }
-   if (a_src && a_src->data.ptr) {
-     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
-@@ -43859,891 +44289,398 @@ wuffs_jpeg__decoder__do_decode_frame(
-   return status;
- }
- 
--// -------- func jpeg.decoder.decode_dht
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GZIP)
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_jpeg__decoder__decode_dht(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JPEG)
- 
--  uint8_t v_c = 0;
--  uint8_t v_tc = 0;
--  uint8_t v_th = 0;
--  uint8_t v_tc4_th = 0;
--  uint32_t v_working_total_count = 0;
--  uint32_t v_total_count = 0;
--  uint32_t v_i = 0;
--  bool v_failed = false;
-+// ---------------- Status Codes Implementations
- 
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
-+const char wuffs_jpeg__error__bad_dht_marker[] = "#jpeg: bad DHT marker";
-+const char wuffs_jpeg__error__bad_dqt_marker[] = "#jpeg: bad DQT marker";
-+const char wuffs_jpeg__error__bad_dri_marker[] = "#jpeg: bad DRI marker";
-+const char wuffs_jpeg__error__bad_sof_marker[] = "#jpeg: bad SOF marker";
-+const char wuffs_jpeg__error__bad_sos_marker[] = "#jpeg: bad SOS marker";
-+const char wuffs_jpeg__error__bad_header[] = "#jpeg: bad header";
-+const char wuffs_jpeg__error__bad_marker[] = "#jpeg: bad marker";
-+const char wuffs_jpeg__error__bad_scan_count[] = "#jpeg: bad scan count";
-+const char wuffs_jpeg__error__missing_huffman_table[] = "#jpeg: missing Huffman table";
-+const char wuffs_jpeg__error__missing_quantization_table[] = "#jpeg: missing Quantization table";
-+const char wuffs_jpeg__error__rejected_progressive_jpeg[] = "#jpeg: rejected progressive JPEG";
-+const char wuffs_jpeg__error__truncated_input[] = "#jpeg: truncated input";
-+const char wuffs_jpeg__error__unsupported_arithmetic_coding[] = "#jpeg: unsupported arithmetic coding";
-+const char wuffs_jpeg__error__unsupported_color_model[] = "#jpeg: unsupported color model";
-+const char wuffs_jpeg__error__unsupported_fractional_sampling[] = "#jpeg: unsupported fractional sampling";
-+const char wuffs_jpeg__error__unsupported_hierarchical_coding[] = "#jpeg: unsupported hierarchical coding";
-+const char wuffs_jpeg__error__unsupported_implicit_height[] = "#jpeg: unsupported implicit height";
-+const char wuffs_jpeg__error__unsupported_lossless_coding[] = "#jpeg: unsupported lossless coding";
-+const char wuffs_jpeg__error__unsupported_marker[] = "#jpeg: unsupported marker";
-+const char wuffs_jpeg__error__unsupported_precision_12_bits[] = "#jpeg: unsupported precision (12 bits)";
-+const char wuffs_jpeg__error__unsupported_precision_16_bits[] = "#jpeg: unsupported precision (16 bits)";
-+const char wuffs_jpeg__error__unsupported_precision[] = "#jpeg: unsupported precision";
-+const char wuffs_jpeg__error__unsupported_scan_count[] = "#jpeg: unsupported scan count";
-+const char wuffs_jpeg__error__internal_error_inconsistent_decoder_state[] = "#jpeg: internal error: inconsistent decoder state";
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_dht[0];
--  if (coro_susp_point) {
--    v_tc4_th = self->private_data.s_decode_dht[0].v_tc4_th;
--    v_total_count = self->private_data.s_decode_dht[0].v_total_count;
--    v_i = self->private_data.s_decode_dht[0].v_i;
--  }
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+// ---------------- Private Consts
- 
--    if (self->private_impl.f_sof_marker == 0u) {
--      status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
--      goto exit;
--    }
--    while (self->private_impl.f_payload_length > 0u) {
--      if (self->private_impl.f_payload_length < 17u) {
--        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
--        goto exit;
--      }
--      self->private_impl.f_payload_length -= 17u;
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
--        }
--        uint8_t t_0 = *iop_a_src++;
--        v_c = t_0;
--      }
--      if (((v_c >> 4u) > 1u) || ((v_c & 15u) > 3u)) {
--        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
--        goto exit;
--      }
--      v_tc = (v_c >> 4u);
--      v_th = (v_c & 15u);
--      v_tc4_th = ((uint8_t)(((v_tc * 4u) | v_th)));
--      if ((self->private_impl.f_sof_marker == 192u) && ((v_tc4_th & 3u) > 1u)) {
--        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
--        goto exit;
--      }
--      v_i = 0u;
--      while (v_i < 16u) {
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint8_t t_1 = *iop_a_src++;
--          self->private_data.f_dht_temp_counts[v_i] = t_1;
--        }
--        v_i += 1u;
--      }
--      v_working_total_count = 0u;
--      v_i = 0u;
--      while (v_i < 16u) {
--        v_working_total_count = ((v_working_total_count + ((uint32_t)(self->private_data.f_dht_temp_counts[v_i]))) & 65535u);
--        v_i += 1u;
--      }
--      if ((v_working_total_count <= 0u) || (256u < v_working_total_count)) {
--        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
--        goto exit;
--      }
--      v_total_count = v_working_total_count;
--      if (self->private_impl.f_payload_length < v_total_count) {
--        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
--        goto exit;
--      }
--      self->private_impl.f_payload_length -= v_total_count;
--      v_i = 0u;
--      while (v_i < v_total_count) {
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint8_t t_2 = *iop_a_src++;
--          self->private_impl.f_huff_tables_symbols[v_tc4_th][v_i] = t_2;
--        }
--        v_i += 1u;
--      }
--      while (v_i < 256u) {
--        self->private_impl.f_huff_tables_symbols[v_tc4_th][v_i] = 0u;
--        v_i += 1u;
--      }
--      if ((v_tc4_th & 4u) == 0u) {
--        v_i = 0u;
--        while (v_i < v_total_count) {
--          if (self->private_impl.f_huff_tables_symbols[v_tc4_th][v_i] > 15u) {
--            status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
--            goto exit;
--          }
--          v_i += 1u;
--        }
--      }
--      v_failed = wuffs_jpeg__decoder__calculate_huff_tables(self, v_tc4_th, v_total_count);
--      if (v_failed) {
--        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
--        goto exit;
--      }
--      self->private_impl.f_seen_dht[v_tc4_th] = true;
--    }
-+static const uint8_t
-+WUFFS_JPEG__UNZIG[80] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 0u, 1u, 8u, 16u, 9u, 2u, 3u,
-+  10u, 17u, 24u, 32u, 25u, 18u, 11u, 4u,
-+  5u, 12u, 19u, 26u, 33u, 40u, 48u, 41u,
-+  34u, 27u, 20u, 13u, 6u, 7u, 14u, 21u,
-+  28u, 35u, 42u, 49u, 56u, 57u, 50u, 43u,
-+  36u, 29u, 22u, 15u, 23u, 30u, 37u, 44u,
-+  51u, 58u, 59u, 52u, 45u, 38u, 31u, 39u,
-+  46u, 53u, 60u, 61u, 54u, 47u, 55u, 62u,
-+  63u, 63u, 63u, 63u, 63u, 63u, 63u, 63u,
-+  63u, 63u, 63u, 63u, 63u, 63u, 63u, 63u,
-+};
- 
--    goto ok;
--    ok:
--    self->private_impl.p_decode_dht[0] = 0;
--    goto exit;
--  }
-+static const uint8_t
-+WUFFS_JPEG__BIAS_AND_CLAMP[1024] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  128u, 129u, 130u, 131u, 132u, 133u, 134u, 135u,
-+  136u, 137u, 138u, 139u, 140u, 141u, 142u, 143u,
-+  144u, 145u, 146u, 147u, 148u, 149u, 150u, 151u,
-+  152u, 153u, 154u, 155u, 156u, 157u, 158u, 159u,
-+  160u, 161u, 162u, 163u, 164u, 165u, 166u, 167u,
-+  168u, 169u, 170u, 171u, 172u, 173u, 174u, 175u,
-+  176u, 177u, 178u, 179u, 180u, 181u, 182u, 183u,
-+  184u, 185u, 186u, 187u, 188u, 189u, 190u, 191u,
-+  192u, 193u, 194u, 195u, 196u, 197u, 198u, 199u,
-+  200u, 201u, 202u, 203u, 204u, 205u, 206u, 207u,
-+  208u, 209u, 210u, 211u, 212u, 213u, 214u, 215u,
-+  216u, 217u, 218u, 219u, 220u, 221u, 222u, 223u,
-+  224u, 225u, 226u, 227u, 228u, 229u, 230u, 231u,
-+  232u, 233u, 234u, 235u, 236u, 237u, 238u, 239u,
-+  240u, 241u, 242u, 243u, 244u, 245u, 246u, 247u,
-+  248u, 249u, 250u, 251u, 252u, 253u, 254u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  255u, 255u, 255u, 255u, 255u, 255u, 255u, 255u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 1u, 2u, 3u, 4u, 5u, 6u, 7u,
-+  8u, 9u, 10u, 11u, 12u, 13u, 14u, 15u,
-+  16u, 17u, 18u, 19u, 20u, 21u, 22u, 23u,
-+  24u, 25u, 26u, 27u, 28u, 29u, 30u, 31u,
-+  32u, 33u, 34u, 35u, 36u, 37u, 38u, 39u,
-+  40u, 41u, 42u, 43u, 44u, 45u, 46u, 47u,
-+  48u, 49u, 50u, 51u, 52u, 53u, 54u, 55u,
-+  56u, 57u, 58u, 59u, 60u, 61u, 62u, 63u,
-+  64u, 65u, 66u, 67u, 68u, 69u, 70u, 71u,
-+  72u, 73u, 74u, 75u, 76u, 77u, 78u, 79u,
-+  80u, 81u, 82u, 83u, 84u, 85u, 86u, 87u,
-+  88u, 89u, 90u, 91u, 92u, 93u, 94u, 95u,
-+  96u, 97u, 98u, 99u, 100u, 101u, 102u, 103u,
-+  104u, 105u, 106u, 107u, 108u, 109u, 110u, 111u,
-+  112u, 113u, 114u, 115u, 116u, 117u, 118u, 119u,
-+  120u, 121u, 122u, 123u, 124u, 125u, 126u, 127u,
-+};
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_dht[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_decode_dht[0].v_tc4_th = v_tc4_th;
--  self->private_data.s_decode_dht[0].v_total_count = v_total_count;
--  self->private_data.s_decode_dht[0].v_i = v_i;
-+static const uint16_t
-+WUFFS_JPEG__EXTEND[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 65535u, 65533u, 65529u, 65521u, 65505u, 65473u, 65409u,
-+  65281u, 65025u, 64513u, 63489u, 61441u, 57345u, 49153u, 32769u,
-+};
- 
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
-+static const uint8_t
-+WUFFS_JPEG__DEFAULT_HUFF_TABLE_DC_LUMA[29] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 0u, 1u, 5u, 1u, 1u, 1u, 1u,
-+  1u, 1u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 1u, 2u, 3u, 4u, 5u, 6u,
-+  7u, 8u, 9u, 10u, 11u,
-+};
- 
--  return status;
--}
-+static const uint8_t
-+WUFFS_JPEG__DEFAULT_HUFF_TABLE_DC_CHROMA[29] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  1u, 0u, 3u, 1u, 1u, 1u, 1u, 1u,
-+  1u, 1u, 1u, 1u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 1u, 2u, 3u, 4u, 5u, 6u,
-+  7u, 8u, 9u, 10u, 11u,
-+};
- 
--// -------- func jpeg.decoder.calculate_huff_tables
-+static const uint8_t
-+WUFFS_JPEG__DEFAULT_HUFF_TABLE_AC_LUMA[179] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  16u, 0u, 2u, 1u, 3u, 3u, 2u, 4u,
-+  3u, 5u, 5u, 4u, 4u, 0u, 0u, 1u,
-+  125u, 1u, 2u, 3u, 0u, 4u, 17u, 5u,
-+  18u, 33u, 49u, 65u, 6u, 19u, 81u, 97u,
-+  7u, 34u, 113u, 20u, 50u, 129u, 145u, 161u,
-+  8u, 35u, 66u, 177u, 193u, 21u, 82u, 209u,
-+  240u, 36u, 51u, 98u, 114u, 130u, 9u, 10u,
-+  22u, 23u, 24u, 25u, 26u, 37u, 38u, 39u,
-+  40u, 41u, 42u, 52u, 53u, 54u, 55u, 56u,
-+  57u, 58u, 67u, 68u, 69u, 70u, 71u, 72u,
-+  73u, 74u, 83u, 84u, 85u, 86u, 87u, 88u,
-+  89u, 90u, 99u, 100u, 101u, 102u, 103u, 104u,
-+  105u, 106u, 115u, 116u, 117u, 118u, 119u, 120u,
-+  121u, 122u, 131u, 132u, 133u, 134u, 135u, 136u,
-+  137u, 138u, 146u, 147u, 148u, 149u, 150u, 151u,
-+  152u, 153u, 154u, 162u, 163u, 164u, 165u, 166u,
-+  167u, 168u, 169u, 170u, 178u, 179u, 180u, 181u,
-+  182u, 183u, 184u, 185u, 186u, 194u, 195u, 196u,
-+  197u, 198u, 199u, 200u, 201u, 202u, 210u, 211u,
-+  212u, 213u, 214u, 215u, 216u, 217u, 218u, 225u,
-+  226u, 227u, 228u, 229u, 230u, 231u, 232u, 233u,
-+  234u, 241u, 242u, 243u, 244u, 245u, 246u, 247u,
-+  248u, 249u, 250u,
-+};
-+
-+static const uint8_t
-+WUFFS_JPEG__DEFAULT_HUFF_TABLE_AC_CHROMA[179] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  17u, 0u, 2u, 1u, 2u, 4u, 4u, 3u,
-+  4u, 7u, 5u, 4u, 4u, 0u, 1u, 2u,
-+  119u, 0u, 1u, 2u, 3u, 17u, 4u, 5u,
-+  33u, 49u, 6u, 18u, 65u, 81u, 7u, 97u,
-+  113u, 19u, 34u, 50u, 129u, 8u, 20u, 66u,
-+  145u, 161u, 177u, 193u, 9u, 35u, 51u, 82u,
-+  240u, 21u, 98u, 114u, 209u, 10u, 22u, 36u,
-+  52u, 225u, 37u, 241u, 23u, 24u, 25u, 26u,
-+  38u, 39u, 40u, 41u, 42u, 53u, 54u, 55u,
-+  56u, 57u, 58u, 67u, 68u, 69u, 70u, 71u,
-+  72u, 73u, 74u, 83u, 84u, 85u, 86u, 87u,
-+  88u, 89u, 90u, 99u, 100u, 101u, 102u, 103u,
-+  104u, 105u, 106u, 115u, 116u, 117u, 118u, 119u,
-+  120u, 121u, 122u, 130u, 131u, 132u, 133u, 134u,
-+  135u, 136u, 137u, 138u, 146u, 147u, 148u, 149u,
-+  150u, 151u, 152u, 153u, 154u, 162u, 163u, 164u,
-+  165u, 166u, 167u, 168u, 169u, 170u, 178u, 179u,
-+  180u, 181u, 182u, 183u, 184u, 185u, 186u, 194u,
-+  195u, 196u, 197u, 198u, 199u, 200u, 201u, 202u,
-+  210u, 211u, 212u, 213u, 214u, 215u, 216u, 217u,
-+  218u, 226u, 227u, 228u, 229u, 230u, 231u, 232u,
-+  233u, 234u, 242u, 243u, 244u, 245u, 246u, 247u,
-+  248u, 249u, 250u,
-+};
-+
-+#define WUFFS_JPEG__QUIRKS_BASE 1220532224u
-+
-+// ---------------- Private Initializer Prototypes
-+
-+// ---------------- Private Function Prototypes
- 
- WUFFS_BASE__GENERATED_C_CODE
--static bool
--wuffs_jpeg__decoder__calculate_huff_tables(
-+static wuffs_base__empty_struct
-+wuffs_jpeg__decoder__decode_idct(
-     wuffs_jpeg__decoder* self,
--    uint8_t a_tc4_th,
--    uint32_t a_total_count) {
--  uint32_t v_i = 0;
--  uint8_t v_j = 0;
--  uint8_t v_k = 0;
--  uint32_t v_bit_length_minus_one = 0;
--  uint8_t v_bit_length = 0;
--  uint32_t v_bit_string = 0;
--  uint32_t v_slow = 0;
--  uint8_t v_prefix = 0;
--  uint16_t v_fast = 0;
--  uint32_t v_reps = 0;
-+    wuffs_base__slice_u8 a_dst_buffer,
-+    uint64_t a_dst_stride,
-+    uint32_t a_q);
- 
--  v_i = 0u;
--  v_k = 0u;
--  v_bit_length_minus_one = 0u;
--  while (v_i < a_total_count) {
--    while (v_k >= self->private_data.f_dht_temp_counts[v_bit_length_minus_one]) {
--      v_k = 0u;
--      v_bit_length_minus_one = ((v_bit_length_minus_one + 1u) & 15u);
--    }
--#if defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wconversion"
--#endif
--    v_k += 1u;
--#if defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--    self->private_data.f_dht_temp_bit_lengths[v_i] = ((uint8_t)((v_bit_length_minus_one + 1u)));
--    v_i += 1u;
--  }
--  v_bit_length = 0u;
--  v_bit_string = 0u;
--  v_i = 0u;
--  while (v_i < a_total_count) {
--    while (v_bit_length < self->private_data.f_dht_temp_bit_lengths[v_i]) {
--      if (v_bit_length >= 16u) {
--        return true;
--      }
--#if defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wconversion"
--#endif
--      v_bit_length += 1u;
--#if defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--      v_bit_string <<= 1u;
--    }
--    self->private_data.f_dht_temp_bit_strings[v_i] = ((uint16_t)(v_bit_string));
--    v_bit_string += 1u;
--    if ((v_bit_string >> v_bit_length) > 0u) {
--      return true;
--    }
--    v_i += 1u;
--  }
--  v_k = 0u;
--  v_bit_length_minus_one = 0u;
--  while (true) {
--    if (self->private_data.f_dht_temp_counts[v_bit_length_minus_one] == 0u) {
--      self->private_impl.f_huff_tables_slow[a_tc4_th][v_bit_length_minus_one] = 0u;
--    } else {
--      v_slow = (255u & ((uint32_t)(((uint32_t)(v_k)) - ((uint32_t)(self->private_data.f_dht_temp_bit_strings[v_k])))));
--      v_k += self->private_data.f_dht_temp_counts[v_bit_length_minus_one];
--      self->private_impl.f_huff_tables_slow[a_tc4_th][v_bit_length_minus_one] = (v_slow | ((((uint32_t)(self->private_data.f_dht_temp_bit_strings[((uint8_t)(v_k - 1u))])) + 1u) << 8u));
--    }
--    v_bit_length_minus_one = ((v_bit_length_minus_one + 1u) & 15u);
--    if (v_bit_length_minus_one == 0u) {
--      break;
--    }
--  }
--  v_i = 0u;
--  while (v_i < 256u) {
--    self->private_impl.f_huff_tables_fast[a_tc4_th][v_i] = 65535u;
--    v_i += 1u;
--  }
--  v_j = 0u;
--  v_bit_length_minus_one = 0u;
--  while (v_bit_length_minus_one < 8u) {
--    v_k = 0u;
--    while (v_k < self->private_data.f_dht_temp_counts[v_bit_length_minus_one]) {
--      v_prefix = ((uint8_t)((((uint32_t)(self->private_data.f_dht_temp_bit_strings[v_j])) << (7u - v_bit_length_minus_one))));
--      v_fast = ((uint16_t)(((((uint32_t)((v_bit_length_minus_one + 1u))) << 8u) | ((uint32_t)(self->private_impl.f_huff_tables_symbols[a_tc4_th][v_j])))));
--      v_reps = (((uint32_t)(1u)) << (7u - v_bit_length_minus_one));
--      while (v_reps > 0u) {
--        self->private_impl.f_huff_tables_fast[a_tc4_th][v_prefix] = v_fast;
--        v_prefix += 1u;
--        v_reps -= 1u;
--      }
--#if defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wconversion"
--#endif
--      v_k += 1u;
--#if defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--      v_j += 1u;
--    }
--    v_bit_length_minus_one += 1u;
--  }
--  return false;
--}
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_jpeg__decoder__decode_idct__choosy_default(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__slice_u8 a_dst_buffer,
-+    uint64_t a_dst_stride,
-+    uint32_t a_q);
- 
--// -------- func jpeg.decoder.decode_sos
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_jpeg__decoder__decode_idct_x86_avx2(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__slice_u8 a_dst_buffer,
-+    uint64_t a_dst_stride,
-+    uint32_t a_q);
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_jpeg__decoder__decode_sos(
-+wuffs_jpeg__decoder__do_decode_image_config(
-     wuffs_jpeg__decoder* self,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__slice_u8 a_workbuf) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  uint32_t v_my = 0;
--  uint32_t v_mx = 0;
--  uint32_t v_decode_mcu_result = 0;
--  uint32_t v_bitstream_length = 0;
--
--  uint32_t coro_susp_point = self->private_impl.p_decode_sos[0];
--  if (coro_susp_point) {
--    v_my = self->private_data.s_decode_sos[0].v_my;
--    v_mx = self->private_data.s_decode_sos[0].v_mx;
--  }
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
- 
--    if (self->private_impl.f_scan_count >= 64u) {
--      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_scan_count);
--      goto exit;
--    }
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--    status = wuffs_jpeg__decoder__prepare_scan(self, a_src);
--    if (status.repr) {
--      goto suspend;
--    }
--    self->private_impl.f_next_restart_marker = 0u;
--    self->private_impl.f_mcu_previous_dc_values[0u] = 0u;
--    self->private_impl.f_mcu_previous_dc_values[1u] = 0u;
--    self->private_impl.f_mcu_previous_dc_values[2u] = 0u;
--    self->private_impl.f_mcu_previous_dc_values[3u] = 0u;
--    self->private_impl.f_restarts_remaining = self->private_impl.f_restart_interval;
--    self->private_impl.f_eob_run = 0u;
--    self->private_impl.f_bitstream_bits = 0u;
--    self->private_impl.f_bitstream_n_bits = 0u;
--    self->private_impl.f_bitstream_ri = 0u;
--    self->private_impl.f_bitstream_wi = 0u;
--    self->private_impl.f_bitstream_padding = 12345u;
--    wuffs_jpeg__decoder__fill_bitstream(self, a_src);
--    v_my = 0u;
--    while (v_my < self->private_impl.f_scan_height_in_mcus) {
--      v_mx = 0u;
--      while (v_mx < self->private_impl.f_scan_width_in_mcus) {
--        self->private_impl.f_mcu_current_block = 0u;
--        self->private_impl.f_mcu_zig_index = ((uint32_t)(self->private_impl.f_scan_ss));
--        if (self->private_impl.f_sof_marker >= 194u) {
--          wuffs_jpeg__decoder__load_mcu_blocks(self, v_mx, v_my, a_workbuf);
--        }
--        while (true) {
--          v_decode_mcu_result = wuffs_jpeg__decoder__decode_mcu(self, a_workbuf, v_mx, v_my);
--          if (v_decode_mcu_result == 0u) {
--            break;
--          } else if (v_decode_mcu_result != 1u) {
--            status = wuffs_base__make_status(wuffs_jpeg__error__internal_error_inconsistent_decoder_state);
--            goto exit;
--          }
--          while (true) {
--            v_bitstream_length = ((uint32_t)(self->private_impl.f_bitstream_wi - self->private_impl.f_bitstream_ri));
--            wuffs_jpeg__decoder__fill_bitstream(self, a_src);
--            if (v_bitstream_length < ((uint32_t)(self->private_impl.f_bitstream_wi - self->private_impl.f_bitstream_ri))) {
--              break;
--            } else if (self->private_impl.f_bitstream_padding == 0u) {
--              status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
--              goto exit;
--            } else if ((a_src && a_src->meta.closed) &&  ! self->private_impl.f_bitstream_is_closed) {
--              if (self->private_impl.f_bitstream_wi < 1024u) {
--                wuffs_base__bulk_memset(&self->private_data.f_bitstream_buffer[self->private_impl.f_bitstream_wi], 264u, 0u);
--                self->private_impl.f_bitstream_wi += 264u;
--                self->private_impl.f_bitstream_is_closed = true;
--              }
--              break;
--            }
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
--          }
--        }
--        if (self->private_impl.f_sof_marker >= 194u) {
--          wuffs_jpeg__decoder__save_mcu_blocks(self, v_mx, v_my, a_workbuf);
--        }
--        if (self->private_impl.f_restarts_remaining > 0u) {
--#if defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wconversion"
--#endif
--          self->private_impl.f_restarts_remaining -= 1u;
--#if defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--          if (self->private_impl.f_restarts_remaining == 0u) {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--            status = wuffs_jpeg__decoder__skip_past_the_next_restart_marker(self, a_src);
--            if (status.repr) {
--              goto suspend;
--            }
--            self->private_impl.f_mcu_previous_dc_values[0u] = 0u;
--            self->private_impl.f_mcu_previous_dc_values[1u] = 0u;
--            self->private_impl.f_mcu_previous_dc_values[2u] = 0u;
--            self->private_impl.f_mcu_previous_dc_values[3u] = 0u;
--            self->private_impl.f_restarts_remaining = self->private_impl.f_restart_interval;
--            self->private_impl.f_eob_run = 0u;
--            self->private_impl.f_bitstream_bits = 0u;
--            self->private_impl.f_bitstream_n_bits = 0u;
--            self->private_impl.f_bitstream_ri = 0u;
--            self->private_impl.f_bitstream_wi = 0u;
--            self->private_impl.f_bitstream_padding = 12345u;
--          }
--        }
--        v_mx += 1u;
--      }
--      v_my += 1u;
--    }
--    wuffs_base__u32__sat_add_indirect(&self->private_impl.f_scan_count, 1u);
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_jpeg__decoder__decode_dqt(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__io_buffer* a_src);
- 
--    ok:
--    self->private_impl.p_decode_sos[0] = 0;
--    goto exit;
--  }
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_jpeg__decoder__decode_dri(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__io_buffer* a_src);
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_sos[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_decode_sos[0].v_my = v_my;
--  self->private_data.s_decode_sos[0].v_mx = v_mx;
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_jpeg__decoder__decode_appn(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__io_buffer* a_src,
-+    uint8_t a_marker);
- 
--  goto exit;
--  exit:
--  return status;
--}
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_jpeg__decoder__decode_sof(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__io_buffer* a_src);
- 
--// -------- func jpeg.decoder.prepare_scan
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint32_t
-+wuffs_jpeg__decoder__quantize_dimension(
-+    const wuffs_jpeg__decoder* self,
-+    uint32_t a_width,
-+    uint8_t a_h,
-+    uint8_t a_max_incl_h);
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_jpeg__decoder__prepare_scan(
-+wuffs_jpeg__decoder__do_decode_frame_config(
-     wuffs_jpeg__decoder* self,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  uint8_t v_c = 0;
--  uint32_t v_i = 0;
--  uint32_t v_j = 0;
--  uint32_t v_j_max_incl = 0;
--  bool v_failed = false;
--
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
--
--  uint32_t coro_susp_point = self->private_impl.p_prepare_scan[0];
--  if (coro_susp_point) {
--    v_i = self->private_data.s_prepare_scan[0].v_i;
--  }
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    if ((self->private_impl.f_payload_length < 6u) || (self->private_impl.f_payload_length > 12u)) {
--      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
--      goto exit;
--    }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_0 = *iop_a_src++;
--      v_c = t_0;
--    }
--    if ((v_c < 1u) || (v_c > 4u)) {
--      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
--      goto exit;
--    }
--    self->private_impl.f_scan_num_components = ((uint32_t)(v_c));
--    if ((self->private_impl.f_scan_num_components > self->private_impl.f_num_components) || (self->private_impl.f_payload_length != (4u + (2u * self->private_impl.f_scan_num_components)))) {
--      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
--      goto exit;
--    }
--    self->private_impl.f_payload_length = 0u;
--    v_i = 0u;
--    while (v_i < self->private_impl.f_scan_num_components) {
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
--        }
--        uint8_t t_1 = *iop_a_src++;
--        v_c = t_1;
--      }
--      v_j = 0u;
--      while (true) {
--        if (v_j >= self->private_impl.f_num_components) {
--          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
--          goto exit;
--        }
--        if (v_c == self->private_impl.f_components_c[v_j]) {
--          if ( ! self->private_impl.f_seen_dqt[self->private_impl.f_components_tq[v_j]]) {
--            status = wuffs_base__make_status(wuffs_jpeg__error__missing_quantization_table);
--            goto exit;
--          }
--          self->private_impl.f_scan_comps_cselector[v_i] = ((uint8_t)(v_j));
--          break;
--        }
--        v_j += 1u;
--      }
--      v_j = 0u;
--      while (v_j < v_i) {
--        if (self->private_impl.f_scan_comps_cselector[v_i] == self->private_impl.f_scan_comps_cselector[v_j]) {
--          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
--          goto exit;
--        }
--        v_j += 1u;
--      }
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
--        }
--        uint8_t t_2 = *iop_a_src++;
--        v_c = t_2;
--      }
--      if (((v_c >> 4u) > 3u) || ((v_c & 15u) > 3u)) {
--        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
--        goto exit;
--      }
--      self->private_impl.f_scan_comps_td[v_i] = (v_c >> 4u);
--      self->private_impl.f_scan_comps_ta[v_i] = (v_c & 15u);
--      if (self->private_impl.f_sof_marker == 192u) {
--        if ((self->private_impl.f_scan_comps_td[v_i] > 1u) || (self->private_impl.f_scan_comps_ta[v_i] > 1u)) {
--          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
--          goto exit;
--        }
--      }
--      v_i += 1u;
--    }
--    if (self->private_impl.f_sof_marker < 194u) {
--      self->private_data.s_prepare_scan[0].scratch = 3u;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--      if (self->private_data.s_prepare_scan[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--        self->private_data.s_prepare_scan[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--        iop_a_src = io2_a_src;
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      iop_a_src += self->private_data.s_prepare_scan[0].scratch;
--      self->private_impl.f_scan_ss = 0u;
--      self->private_impl.f_scan_se = 63u;
--      self->private_impl.f_scan_ah = 0u;
--      self->private_impl.f_scan_al = 0u;
--    } else {
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
--        }
--        uint8_t t_3 = *iop_a_src++;
--        v_c = t_3;
--      }
--      if (v_c > 63u) {
--        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
--        goto exit;
--      }
--      self->private_impl.f_scan_ss = v_c;
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
--        }
--        uint8_t t_4 = *iop_a_src++;
--        v_c = t_4;
--      }
--      if ((v_c > 63u) || (v_c < self->private_impl.f_scan_ss)) {
--        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
--        goto exit;
--      }
--      self->private_impl.f_scan_se = v_c;
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
--        }
--        uint8_t t_5 = *iop_a_src++;
--        v_c = t_5;
--      }
--      if (((v_c >> 4u) > 14u) || ((v_c & 15u) > 13u)) {
--        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
--        goto exit;
--      }
--      self->private_impl.f_scan_ah = (v_c >> 4u);
--      self->private_impl.f_scan_al = (v_c & 15u);
--      if (self->private_impl.f_scan_ah > 0u) {
--        if ((self->private_impl.f_scan_ah - 1u) != self->private_impl.f_scan_al) {
--          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
--          goto exit;
--        }
--      }
--      if (self->private_impl.f_scan_ss == 0u) {
--        if (self->private_impl.f_scan_se != 0u) {
--          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
--          goto exit;
--        } else if (self->private_impl.f_scan_ah == 0u) {
--          self->private_impl.choosy_decode_mcu = (
--              &wuffs_jpeg__decoder__decode_mcu_progressive_dc_high_bits);
--        } else {
--          self->private_impl.choosy_decode_mcu = (
--              &wuffs_jpeg__decoder__decode_mcu_progressive_dc_low_bit);
--        }
--      } else {
--        if (self->private_impl.f_scan_num_components != 1u) {
--          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
--          goto exit;
--        } else if (self->private_impl.f_scan_ah == 0u) {
--          self->private_impl.choosy_decode_mcu = (
--              &wuffs_jpeg__decoder__decode_mcu_progressive_ac_high_bits);
--        } else {
--          self->private_impl.choosy_decode_mcu = (
--              &wuffs_jpeg__decoder__decode_mcu_progressive_ac_low_bit);
--        }
--      }
--    }
--    v_i = 0u;
--    while (v_i < self->private_impl.f_scan_num_components) {
--      if ((self->private_impl.f_scan_ss == 0u) &&  ! self->private_impl.f_seen_dht[(0u | self->private_impl.f_scan_comps_td[v_i])]) {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
--        status = wuffs_jpeg__decoder__use_default_huffman_table(self, (0u | self->private_impl.f_scan_comps_td[v_i]));
--        if (status.repr) {
--          goto suspend;
--        }
--      }
--      if ((self->private_impl.f_scan_se != 0u) &&  ! self->private_impl.f_seen_dht[(4u | self->private_impl.f_scan_comps_ta[v_i])]) {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
--        status = wuffs_jpeg__decoder__use_default_huffman_table(self, (4u | self->private_impl.f_scan_comps_ta[v_i]));
--        if (status.repr) {
--          goto suspend;
--        }
--      }
--      v_j = ((uint32_t)(self->private_impl.f_scan_ss));
--      v_j_max_incl = ((uint32_t)(wuffs_base__u8__min(self->private_impl.f_scan_se, 9u)));
--      while (v_j <= v_j_max_incl) {
--        self->private_impl.f_block_smoothing_lowest_scan_al[self->private_impl.f_scan_comps_cselector[v_i]][v_j] = self->private_impl.f_scan_al;
--        v_j += 1u;
--      }
--      v_i += 1u;
--    }
--    if (self->private_impl.f_scan_num_components == 1u) {
--      wuffs_jpeg__decoder__calculate_single_component_scan_fields(self);
--    } else {
--      v_failed = wuffs_jpeg__decoder__calculate_multiple_component_scan_fields(self);
--      if (v_failed) {
--        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
--        goto exit;
--      }
--    }
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
- 
--    goto ok;
--    ok:
--    self->private_impl.p_prepare_scan[0] = 0;
--    goto exit;
--  }
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_jpeg__decoder__do_decode_frame(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts);
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_prepare_scan[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_prepare_scan[0].v_i = v_i;
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_jpeg__decoder__decode_dht(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__io_buffer* a_src);
- 
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
-+WUFFS_BASE__GENERATED_C_CODE
-+static bool
-+wuffs_jpeg__decoder__calculate_huff_tables(
-+    wuffs_jpeg__decoder* self,
-+    uint8_t a_tc4_th,
-+    uint32_t a_total_count);
- 
--  return status;
--}
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_jpeg__decoder__decode_sos(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf);
- 
--// -------- func jpeg.decoder.use_default_huffman_table
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_jpeg__decoder__prepare_scan(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__io_buffer* a_src);
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
- wuffs_jpeg__decoder__use_default_huffman_table(
-     wuffs_jpeg__decoder* self,
--    uint8_t a_tc4_th) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  wuffs_base__slice_u8 v_data = {0};
--  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
--  wuffs_base__io_buffer* v_r = &u_r;
--  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
--
--  if (a_tc4_th == 0u) {
--    v_data = wuffs_base__make_slice_u8(wuffs_base__strip_const_from_u8_ptr(WUFFS_JPEG__DEFAULT_HUFF_TABLE_DC_LUMA), 29);
--  } else if (a_tc4_th == 1u) {
--    v_data = wuffs_base__make_slice_u8(wuffs_base__strip_const_from_u8_ptr(WUFFS_JPEG__DEFAULT_HUFF_TABLE_DC_CHROMA), 29);
--  } else if (a_tc4_th == 4u) {
--    v_data = wuffs_base__make_slice_u8(wuffs_base__strip_const_from_u8_ptr(WUFFS_JPEG__DEFAULT_HUFF_TABLE_AC_LUMA), 179);
--  } else if (a_tc4_th == 5u) {
--    v_data = wuffs_base__make_slice_u8(wuffs_base__strip_const_from_u8_ptr(WUFFS_JPEG__DEFAULT_HUFF_TABLE_AC_CHROMA), 179);
--  } else {
--    status = wuffs_base__make_status(wuffs_jpeg__error__missing_huffman_table);
--    goto exit;
--  }
--  {
--    wuffs_base__io_buffer* o_0_v_r = v_r;
--    const uint8_t *o_0_iop_v_r = iop_v_r;
--    const uint8_t *o_0_io0_v_r = io0_v_r;
--    const uint8_t *o_0_io1_v_r = io1_v_r;
--    const uint8_t *o_0_io2_v_r = io2_v_r;
--    v_r = wuffs_base__io_reader__set(
--        &u_r,
--        &iop_v_r,
--        &io0_v_r,
--        &io1_v_r,
--        &io2_v_r,
--        v_data,
--        0u);
--    self->private_impl.f_payload_length = ((uint32_t)((((uint64_t)(v_data.len)) & 65535u)));
--    {
--      wuffs_base__status t_0 = wuffs_jpeg__decoder__decode_dht(self, v_r);
--      v_status = t_0;
--    }
--    v_r = o_0_v_r;
--    iop_v_r = o_0_iop_v_r;
--    io0_v_r = o_0_io0_v_r;
--    io1_v_r = o_0_io1_v_r;
--    io2_v_r = o_0_io2_v_r;
--  }
--  status = v_status;
--  if (wuffs_base__status__is_error(&status)) {
--    goto exit;
--  } else if (wuffs_base__status__is_suspension(&status)) {
--    status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
--    goto exit;
--  }
--  goto ok;
--
--  ok:
--  goto exit;
--  exit:
--  return status;
--}
--
--// -------- func jpeg.decoder.calculate_single_component_scan_fields
-+    uint8_t a_tc4_th);
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__empty_struct
- wuffs_jpeg__decoder__calculate_single_component_scan_fields(
--    wuffs_jpeg__decoder* self) {
--  uint8_t v_csel = 0;
--
--  self->private_impl.f_scan_comps_bx_offset[0u] = 0u;
--  self->private_impl.f_scan_comps_by_offset[0u] = 0u;
--  self->private_impl.f_mcu_num_blocks = 1u;
--  self->private_impl.f_mcu_blocks_sselector[0u] = 0u;
--  v_csel = self->private_impl.f_scan_comps_cselector[0u];
--  self->private_impl.f_mcu_blocks_offset[0u] = self->private_impl.f_components_workbuf_offsets[v_csel];
--  self->private_impl.f_mcu_blocks_mx_mul[0u] = 8u;
--  self->private_impl.f_mcu_blocks_my_mul[0u] = (8u * self->private_impl.f_components_workbuf_widths[v_csel]);
--  self->private_impl.f_mcu_blocks_dc_hselector[0u] = (0u | self->private_impl.f_scan_comps_td[0u]);
--  self->private_impl.f_mcu_blocks_ac_hselector[0u] = (4u | self->private_impl.f_scan_comps_ta[0u]);
--  self->private_impl.f_scan_width_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_width, self->private_impl.f_components_h[v_csel], self->private_impl.f_max_incl_components_h);
--  self->private_impl.f_scan_height_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_height, self->private_impl.f_components_v[v_csel], self->private_impl.f_max_incl_components_v);
--  return wuffs_base__make_empty_struct();
--}
--
--// -------- func jpeg.decoder.calculate_multiple_component_scan_fields
-+    wuffs_jpeg__decoder* self);
- 
- WUFFS_BASE__GENERATED_C_CODE
- static bool
- wuffs_jpeg__decoder__calculate_multiple_component_scan_fields(
--    wuffs_jpeg__decoder* self) {
--  uint32_t v_i = 0;
--  uint32_t v_h = 0;
--  uint32_t v_v = 0;
--  uint32_t v_hv = 0;
--  uint32_t v_total_hv = 0;
--  uint32_t v_b = 0;
--  uint32_t v_bx_offset = 0;
--  uint32_t v_by_offset = 0;
--  uint8_t v_ssel = 0;
--  uint8_t v_csel = 0;
--
--  v_total_hv = 0u;
--  v_i = 0u;
--  v_b = 0u;
--  v_bx_offset = 0u;
--  v_by_offset = 0u;
--  while (v_i < self->private_impl.f_scan_num_components) {
--    v_h = ((uint32_t)(self->private_impl.f_components_h[self->private_impl.f_scan_comps_cselector[v_i]]));
--    v_v = ((uint32_t)(self->private_impl.f_components_v[self->private_impl.f_scan_comps_cselector[v_i]]));
--    v_hv = (((uint32_t)(self->private_impl.f_components_h[self->private_impl.f_scan_comps_cselector[v_i]])) * ((uint32_t)(self->private_impl.f_components_v[self->private_impl.f_scan_comps_cselector[v_i]])));
--    v_total_hv += v_hv;
--    while (v_hv > 0u) {
--      self->private_impl.f_scan_comps_bx_offset[(v_b & 15u)] = ((uint8_t)((v_bx_offset & 3u)));
--      self->private_impl.f_scan_comps_by_offset[(v_b & 15u)] = ((uint8_t)((v_by_offset & 3u)));
--      self->private_impl.f_mcu_blocks_sselector[(v_b & 15u)] = ((uint8_t)(v_i));
--      v_b += 1u;
--      v_bx_offset += 1u;
--      if (v_bx_offset == v_h) {
--        v_bx_offset = 0u;
--        v_by_offset += 1u;
--        if (v_by_offset == v_v) {
--          v_by_offset = 0u;
--        }
--      }
--      v_hv -= 1u;
--    }
--    v_i += 1u;
--  }
--  if (v_total_hv > 10u) {
--    return true;
--  }
--  self->private_impl.f_mcu_num_blocks = v_total_hv;
--  v_b = 0u;
--  while (v_b < self->private_impl.f_mcu_num_blocks) {
--    v_ssel = self->private_impl.f_mcu_blocks_sselector[v_b];
--    v_csel = self->private_impl.f_scan_comps_cselector[v_ssel];
--    self->private_impl.f_mcu_blocks_offset[v_b] = (self->private_impl.f_components_workbuf_offsets[v_csel] + (8u * ((uint64_t)(self->private_impl.f_scan_comps_bx_offset[v_b]))) + (8u * ((uint64_t)(self->private_impl.f_scan_comps_by_offset[v_b])) * ((uint64_t)(self->private_impl.f_components_workbuf_widths[v_csel]))));
--    self->private_impl.f_mcu_blocks_mx_mul[v_b] = (8u * ((uint32_t)(self->private_impl.f_components_h[v_csel])));
--    self->private_impl.f_mcu_blocks_my_mul[v_b] = (8u * ((uint32_t)(self->private_impl.f_components_v[v_csel])) * self->private_impl.f_components_workbuf_widths[v_csel]);
--    self->private_impl.f_mcu_blocks_dc_hselector[v_b] = (0u | self->private_impl.f_scan_comps_td[v_ssel]);
--    self->private_impl.f_mcu_blocks_ac_hselector[v_b] = (4u | self->private_impl.f_scan_comps_ta[v_ssel]);
--    v_b += 1u;
--  }
--  self->private_impl.f_scan_width_in_mcus = self->private_impl.f_width_in_mcus;
--  self->private_impl.f_scan_height_in_mcus = self->private_impl.f_height_in_mcus;
--  return false;
--}
--
--// -------- func jpeg.decoder.fill_bitstream
-+    wuffs_jpeg__decoder* self);
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__empty_struct
- wuffs_jpeg__decoder__fill_bitstream(
-     wuffs_jpeg__decoder* self,
--    wuffs_base__io_buffer* a_src) {
--  uint32_t v_wi = 0;
--  uint8_t v_c = 0;
--  uint32_t v_new_wi = 0;
--
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
--
--  if (self->private_impl.f_bitstream_ri <= 0u) {
--  } else if (self->private_impl.f_bitstream_ri >= self->private_impl.f_bitstream_wi) {
--    self->private_impl.f_bitstream_ri = 0u;
--    self->private_impl.f_bitstream_wi = 0u;
--  } else {
--    v_wi = (self->private_impl.f_bitstream_wi - self->private_impl.f_bitstream_ri);
--    wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_bitstream_buffer, 2048), wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
--        self->private_impl.f_bitstream_ri,
--        self->private_impl.f_bitstream_wi));
--    self->private_impl.f_bitstream_ri = 0u;
--    self->private_impl.f_bitstream_wi = v_wi;
--  }
--  v_wi = self->private_impl.f_bitstream_wi;
--  while ((v_wi < 2048u) && (((uint64_t)(io2_a_src - iop_a_src)) > 0u)) {
--    v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--    if (v_c < 255u) {
--      self->private_data.f_bitstream_buffer[v_wi] = v_c;
--      v_wi += 1u;
--      iop_a_src += 1u;
--      continue;
--    } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 1u) {
--      break;
--    } else if ((wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8u) > 0u) {
--      break;
--    } else {
--      self->private_data.f_bitstream_buffer[v_wi] = 255u;
--      v_wi += 1u;
--      iop_a_src += 2u;
--    }
--  }
--  if (((uint64_t)(io2_a_src - iop_a_src)) > 1u) {
--    if ((wuffs_base__peek_u8be__no_bounds_check(iop_a_src) >= 255u) && ((wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8u) > 0u)) {
--      v_new_wi = (wuffs_base__u32__min(v_wi, 1784u) + 264u);
--      v_new_wi = wuffs_base__u32__min(v_new_wi, (v_wi + self->private_impl.f_bitstream_padding));
--      if (v_wi < v_new_wi) {
--        wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_bitstream_padding, (v_new_wi - v_wi));
--        wuffs_base__bulk_memset(&self->private_data.f_bitstream_buffer[v_wi], (v_new_wi - v_wi), 0u);
--        v_wi = v_new_wi;
--      }
--    }
--  }
--  self->private_impl.f_bitstream_wi = v_wi;
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
--
--  return wuffs_base__make_empty_struct();
--}
--
--// -------- func jpeg.decoder.load_mcu_blocks_for_single_component
-+    wuffs_base__io_buffer* a_src);
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__empty_struct
-@@ -44752,9 +44689,7 @@ wuffs_jpeg__decoder__load_mcu_blocks_for_single_component(
-     uint32_t a_mx,
-     uint32_t a_my,
-     wuffs_base__slice_u8 a_workbuf,
--    uint32_t a_csel) {
--  return (*self->private_impl.choosy_load_mcu_blocks_for_single_component)(self, a_mx, a_my, a_workbuf, a_csel);
--}
-+    uint32_t a_csel);
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__empty_struct
-@@ -44763,19 +44698,7 @@ wuffs_jpeg__decoder__load_mcu_blocks_for_single_component__choosy_default(
-     uint32_t a_mx,
-     uint32_t a_my,
-     wuffs_base__slice_u8 a_workbuf,
--    uint32_t a_csel) {
--  uint64_t v_stride16 = 0;
--  uint64_t v_offset = 0;
--
--  v_stride16 = ((uint64_t)((self->private_impl.f_components_workbuf_widths[a_csel] * 16u)));
--  v_offset = (self->private_impl.f_components_workbuf_offsets[(a_csel | 4u)] + (((uint64_t)(a_mx)) * 128u) + (((uint64_t)(a_my)) * v_stride16));
--  if (v_offset <= ((uint64_t)(a_workbuf.len))) {
--    wuffs_base__bulk_load_host_endian(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset));
--  }
--  return wuffs_base__make_empty_struct();
--}
--
--// -------- func jpeg.decoder.load_mcu_blocks
-+    uint32_t a_csel);
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__empty_struct
-@@ -44783,34 +44706,7 @@ wuffs_jpeg__decoder__load_mcu_blocks(
-     wuffs_jpeg__decoder* self,
-     uint32_t a_mx,
-     uint32_t a_my,
--    wuffs_base__slice_u8 a_workbuf) {
--  uint32_t v_b = 0;
--  uint8_t v_csel = 0;
--  uint64_t v_h = 0;
--  uint64_t v_v = 0;
--  uint64_t v_stride16 = 0;
--  uint64_t v_offset = 0;
--
--  v_h = 1u;
--  v_v = 1u;
--  v_b = 0u;
--  while (v_b < self->private_impl.f_mcu_num_blocks) {
--    v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[v_b]];
--    if (self->private_impl.f_scan_num_components > 1u) {
--      v_h = ((uint64_t)(self->private_impl.f_components_h[v_csel]));
--      v_v = ((uint64_t)(self->private_impl.f_components_v[v_csel]));
--    }
--    v_stride16 = ((uint64_t)((self->private_impl.f_components_workbuf_widths[v_csel] * 16u)));
--    v_offset = (self->private_impl.f_components_workbuf_offsets[(v_csel | 4u)] + (((v_h * ((uint64_t)(a_mx))) + ((uint64_t)(self->private_impl.f_scan_comps_bx_offset[v_b]))) * 128u) + (((v_v * ((uint64_t)(a_my))) + ((uint64_t)(self->private_impl.f_scan_comps_by_offset[v_b]))) * v_stride16));
--    if (v_offset <= ((uint64_t)(a_workbuf.len))) {
--      wuffs_base__bulk_load_host_endian(&self->private_data.f_mcu_blocks[v_b], 1u * (size_t)128u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset));
--    }
--    v_b += 1u;
--  }
--  return wuffs_base__make_empty_struct();
--}
--
--// -------- func jpeg.decoder.save_mcu_blocks
-+    wuffs_base__slice_u8 a_workbuf);
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__empty_struct
-@@ -44818,4983 +44714,17911 @@ wuffs_jpeg__decoder__save_mcu_blocks(
-     wuffs_jpeg__decoder* self,
-     uint32_t a_mx,
-     uint32_t a_my,
--    wuffs_base__slice_u8 a_workbuf) {
--  uint32_t v_b = 0;
--  uint8_t v_csel = 0;
--  uint64_t v_h = 0;
--  uint64_t v_v = 0;
--  uint64_t v_stride16 = 0;
--  uint64_t v_offset = 0;
--
--  v_h = 1u;
--  v_v = 1u;
--  v_b = 0u;
--  while (v_b < self->private_impl.f_mcu_num_blocks) {
--    v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[v_b]];
--    if (self->private_impl.f_scan_num_components > 1u) {
--      v_h = ((uint64_t)(self->private_impl.f_components_h[v_csel]));
--      v_v = ((uint64_t)(self->private_impl.f_components_v[v_csel]));
--    }
--    v_stride16 = ((uint64_t)((self->private_impl.f_components_workbuf_widths[v_csel] * 16u)));
--    v_offset = (self->private_impl.f_components_workbuf_offsets[(v_csel | 4u)] + (((v_h * ((uint64_t)(a_mx))) + ((uint64_t)(self->private_impl.f_scan_comps_bx_offset[v_b]))) * 128u) + (((v_v * ((uint64_t)(a_my))) + ((uint64_t)(self->private_impl.f_scan_comps_by_offset[v_b]))) * v_stride16));
--    if (v_offset <= ((uint64_t)(a_workbuf.len))) {
--      wuffs_base__bulk_save_host_endian(&self->private_data.f_mcu_blocks[v_b], 1u * (size_t)128u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset));
--    }
--    v_b += 1u;
--  }
--  return wuffs_base__make_empty_struct();
--}
--
--// -------- func jpeg.decoder.skip_past_the_next_restart_marker
-+    wuffs_base__slice_u8 a_workbuf);
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
- wuffs_jpeg__decoder__skip_past_the_next_restart_marker(
-     wuffs_jpeg__decoder* self,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  uint8_t v_c = 0;
--
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
--
--  uint32_t coro_susp_point = self->private_impl.p_skip_past_the_next_restart_marker[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    while (true) {
--      if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
--        continue;
--      } else if (wuffs_base__peek_u8be__no_bounds_check(iop_a_src) < 255u) {
--        iop_a_src += 1u;
--        continue;
--      }
--      v_c = ((uint8_t)((wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8u)));
--      if (v_c < 192u) {
--        iop_a_src += 2u;
--        continue;
--      } else if ((v_c < 208u) || (215u < v_c)) {
--        break;
--      }
--      v_c &= 7u;
--      if ((self->private_impl.f_next_restart_marker == ((v_c + 1u) & 7u)) || (self->private_impl.f_next_restart_marker == ((v_c + 2u) & 7u))) {
--        break;
--      } else if ((self->private_impl.f_next_restart_marker == ((v_c + 7u) & 7u)) || (self->private_impl.f_next_restart_marker == ((v_c + 6u) & 7u))) {
--        iop_a_src += 2u;
--        continue;
--      } else {
--        iop_a_src += 2u;
--        break;
--      }
--    }
--    self->private_impl.f_next_restart_marker = (((uint8_t)(self->private_impl.f_next_restart_marker + 1u)) & 7u);
--
--    ok:
--    self->private_impl.p_skip_past_the_next_restart_marker[0] = 0;
--    goto exit;
--  }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_skip_past_the_next_restart_marker[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
--
--  return status;
--}
--
--// -------- func jpeg.decoder.apply_progressive_idct
-+    wuffs_base__io_buffer* a_src);
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__empty_struct
- wuffs_jpeg__decoder__apply_progressive_idct(
-     wuffs_jpeg__decoder* self,
--    wuffs_base__slice_u8 a_workbuf) {
--  uint32_t v_csel = 0;
--  bool v_block_smoothing_applicable = false;
--  uint32_t v_scan_width_in_mcus = 0;
--  uint32_t v_scan_height_in_mcus = 0;
--  uint32_t v_mcu_blocks_mx_mul_0 = 0;
--  uint32_t v_mcu_blocks_my_mul_0 = 0;
--  uint32_t v_my = 0;
--  uint32_t v_mx = 0;
--  uint64_t v_stride = 0;
--  uint64_t v_offset = 0;
--  uint8_t v_stashed_mcu_blocks_0[128] = {0};
--
--  wuffs_base__bulk_save_host_endian(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, wuffs_base__make_slice_u8(v_stashed_mcu_blocks_0, 128));
--  v_block_smoothing_applicable = true;
--  v_csel = 0u;
--  while (v_csel < self->private_impl.f_num_components) {
--    if ((self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][0u] >= 16u) || wuffs_jpeg__decoder__top_left_quants_has_zero(self, ((uint32_t)(self->private_impl.f_components_tq[v_csel])))) {
--      v_block_smoothing_applicable = false;
--    }
--    v_csel += 1u;
--  }
--  v_csel = 0u;
--  while (v_csel < self->private_impl.f_num_components) {
--    v_scan_width_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_width, self->private_impl.f_components_h[v_csel], self->private_impl.f_max_incl_components_h);
--    v_scan_height_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_height, self->private_impl.f_components_v[v_csel], self->private_impl.f_max_incl_components_v);
--    v_mcu_blocks_mx_mul_0 = 8u;
--    v_mcu_blocks_my_mul_0 = (8u * self->private_impl.f_components_workbuf_widths[v_csel]);
--    if (v_block_smoothing_applicable && (0u != (self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][1u] |
--        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][2u] |
--        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][3u] |
--        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][4u] |
--        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][5u] |
--        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][6u] |
--        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][8u] |
--        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][8u] |
--        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][9u]))) {
--      self->private_impl.choosy_load_mcu_blocks_for_single_component = (
--          &wuffs_jpeg__decoder__load_mcu_blocks_for_single_component_smooth);
--      self->private_impl.f_block_smoothing_mx_max_incl = wuffs_base__u32__sat_sub(v_scan_width_in_mcus, 1u);
--      self->private_impl.f_block_smoothing_my_max_incl = wuffs_base__u32__sat_sub(v_scan_height_in_mcus, 1u);
--    } else {
--      self->private_impl.choosy_load_mcu_blocks_for_single_component = (
--          &wuffs_jpeg__decoder__load_mcu_blocks_for_single_component__choosy_default);
--    }
--    v_my = 0u;
--    while (v_my < v_scan_height_in_mcus) {
--      v_mx = 0u;
--      while (v_mx < v_scan_width_in_mcus) {
--        wuffs_jpeg__decoder__load_mcu_blocks_for_single_component(self,
--            v_mx,
--            v_my,
--            a_workbuf,
--            v_csel);
--        v_stride = ((uint64_t)(self->private_impl.f_components_workbuf_widths[v_csel]));
--        v_offset = (self->private_impl.f_components_workbuf_offsets[v_csel] + (((uint64_t)(v_mcu_blocks_mx_mul_0)) * ((uint64_t)(v_mx))) + (((uint64_t)(v_mcu_blocks_my_mul_0)) * ((uint64_t)(v_my))));
--        if (v_offset <= ((uint64_t)(a_workbuf.len))) {
--          wuffs_jpeg__decoder__decode_idct(self, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset), v_stride, ((uint32_t)(self->private_impl.f_components_tq[v_csel])));
--        }
--        v_mx += 1u;
--      }
--      v_my += 1u;
--    }
--    v_csel += 1u;
--  }
--  wuffs_base__bulk_load_host_endian(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, wuffs_base__make_slice_u8(v_stashed_mcu_blocks_0, 128));
--  return wuffs_base__make_empty_struct();
--}
--
--// -------- func jpeg.decoder.swizzle_gray
-+    wuffs_base__slice_u8 a_workbuf);
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
- wuffs_jpeg__decoder__swizzle_gray(
-     wuffs_jpeg__decoder* self,
-     wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__slice_u8 a_workbuf) {
--  wuffs_base__pixel_format v_dst_pixfmt = {0};
--  uint32_t v_dst_bits_per_pixel = 0;
--  uint32_t v_dst_bytes_per_pixel = 0;
--  uint64_t v_dst_length = 0;
--  wuffs_base__table_u8 v_tab = {0};
--  wuffs_base__slice_u8 v_dst = {0};
--  uint32_t v_y = 0;
--  uint64_t v_stride = 0;
--
--  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
--  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
--  if ((v_dst_bits_per_pixel & 7u) != 0u) {
--    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
--  }
--  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
--  v_dst_length = ((uint64_t)((v_dst_bytes_per_pixel * self->private_impl.f_width)));
--  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
--  v_y = 0u;
--  while (v_y < self->private_impl.f_height) {
--    v_dst = wuffs_base__table_u8__row_u32(v_tab, v_y);
--    if (v_dst_length < ((uint64_t)(v_dst.len))) {
--      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_length);
--    }
--    wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)), a_workbuf);
--    v_stride = ((uint64_t)(self->private_impl.f_components_workbuf_widths[0u]));
--    if (v_stride <= ((uint64_t)(a_workbuf.len))) {
--      a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, v_stride);
--    } else {
--      a_workbuf = wuffs_base__utility__empty_slice_u8();
--    }
--    v_y += 1u;
--  }
--  return wuffs_base__make_status(NULL);
--}
--
--// -------- func jpeg.decoder.swizzle_colorful
-+    wuffs_base__slice_u8 a_workbuf,
-+    uint32_t a_x0,
-+    uint32_t a_x1,
-+    uint32_t a_y0,
-+    uint32_t a_y1,
-+    uint64_t a_stride);
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
- wuffs_jpeg__decoder__swizzle_colorful(
-     wuffs_jpeg__decoder* self,
-     wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__slice_u8 a_workbuf) {
--  wuffs_base__slice_u8 v_src0 = {0};
--  wuffs_base__slice_u8 v_src1 = {0};
--  wuffs_base__slice_u8 v_src2 = {0};
--  wuffs_base__slice_u8 v_src3 = {0};
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
--
--  if ((self->private_impl.f_components_workbuf_offsets[0u] <= self->private_impl.f_components_workbuf_offsets[1u]) && (self->private_impl.f_components_workbuf_offsets[1u] <= ((uint64_t)(a_workbuf.len)))) {
--    v_src0 = wuffs_base__slice_u8__subslice_ij(a_workbuf,
--        self->private_impl.f_components_workbuf_offsets[0u],
--        self->private_impl.f_components_workbuf_offsets[1u]);
--  }
--  if ((self->private_impl.f_components_workbuf_offsets[1u] <= self->private_impl.f_components_workbuf_offsets[2u]) && (self->private_impl.f_components_workbuf_offsets[2u] <= ((uint64_t)(a_workbuf.len)))) {
--    v_src1 = wuffs_base__slice_u8__subslice_ij(a_workbuf,
--        self->private_impl.f_components_workbuf_offsets[1u],
--        self->private_impl.f_components_workbuf_offsets[2u]);
--  }
--  if ((self->private_impl.f_components_workbuf_offsets[2u] <= self->private_impl.f_components_workbuf_offsets[3u]) && (self->private_impl.f_components_workbuf_offsets[3u] <= ((uint64_t)(a_workbuf.len)))) {
--    v_src2 = wuffs_base__slice_u8__subslice_ij(a_workbuf,
--        self->private_impl.f_components_workbuf_offsets[2u],
--        self->private_impl.f_components_workbuf_offsets[3u]);
--  }
--  if ((self->private_impl.f_components_workbuf_offsets[3u] <= self->private_impl.f_components_workbuf_offsets[4u]) && (self->private_impl.f_components_workbuf_offsets[4u] <= ((uint64_t)(a_workbuf.len)))) {
--    v_src3 = wuffs_base__slice_u8__subslice_ij(a_workbuf,
--        self->private_impl.f_components_workbuf_offsets[3u],
--        self->private_impl.f_components_workbuf_offsets[4u]);
--  }
--  v_status = wuffs_base__pixel_swizzler__swizzle_ycck(&self->private_impl.f_swizzler,
--      a_dst,
--      wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
--      self->private_impl.f_width,
--      self->private_impl.f_height,
--      v_src0,
--      v_src1,
--      v_src2,
--      v_src3,
--      self->private_impl.f_components_workbuf_widths[0u],
--      self->private_impl.f_components_workbuf_widths[1u],
--      self->private_impl.f_components_workbuf_widths[2u],
--      self->private_impl.f_components_workbuf_widths[3u],
--      self->private_impl.f_components_workbuf_heights[0u],
--      self->private_impl.f_components_workbuf_heights[1u],
--      self->private_impl.f_components_workbuf_heights[2u],
--      self->private_impl.f_components_workbuf_heights[3u],
--      self->private_impl.f_components_workbuf_widths[0u],
--      self->private_impl.f_components_workbuf_widths[1u],
--      self->private_impl.f_components_workbuf_widths[2u],
--      self->private_impl.f_components_workbuf_widths[3u],
--      self->private_impl.f_components_h[0u],
--      self->private_impl.f_components_h[1u],
--      self->private_impl.f_components_h[2u],
--      self->private_impl.f_components_h[3u],
--      self->private_impl.f_components_v[0u],
--      self->private_impl.f_components_v[1u],
--      self->private_impl.f_components_v[2u],
--      self->private_impl.f_components_v[3u],
--      self->private_impl.f_is_rgb_or_cmyk,
--      true,
--      wuffs_base__make_slice_u8(self->private_data.f_swizzle_ycck_scratch_buffer_2k, 2048));
--  return wuffs_base__status__ensure_not_a_suspension(v_status);
--}
--
--// -------- func jpeg.decoder.frame_dirty_rect
-+    wuffs_base__slice_u8 a_workbuf,
-+    uint32_t a_x0,
-+    uint32_t a_x1,
-+    uint32_t a_y0,
-+    uint32_t a_y1);
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
--wuffs_jpeg__decoder__frame_dirty_rect(
--    const wuffs_jpeg__decoder* self) {
--  if (!self) {
--    return wuffs_base__utility__empty_rect_ie_u32();
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_rect_ie_u32();
--  }
--
--  return wuffs_base__utility__make_rect_ie_u32(
--      0u,
--      0u,
--      self->private_impl.f_width,
--      self->private_impl.f_height);
--}
--
--// -------- func jpeg.decoder.num_animation_loops
-+static bool
-+wuffs_jpeg__decoder__top_left_quants_has_zero(
-+    const wuffs_jpeg__decoder* self,
-+    uint32_t a_q);
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_jpeg__decoder__num_animation_loops(
--    const wuffs_jpeg__decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
--
--  return 0u;
--}
--
--// -------- func jpeg.decoder.num_decoded_frame_configs
-+static wuffs_base__empty_struct
-+wuffs_jpeg__decoder__load_mcu_blocks_for_single_component_smooth(
-+    wuffs_jpeg__decoder* self,
-+    uint32_t a_mx,
-+    uint32_t a_my,
-+    wuffs_base__slice_u8 a_workbuf,
-+    uint32_t a_csel);
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_jpeg__decoder__num_decoded_frame_configs(
--    const wuffs_jpeg__decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
--
--  if (self->private_impl.f_call_sequence > 32u) {
--    return 1u;
--  }
--  return 0u;
--}
--
--// -------- func jpeg.decoder.num_decoded_frames
-+static uint32_t
-+wuffs_jpeg__decoder__decode_mcu(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__slice_u8 a_workbuf,
-+    uint32_t a_mx,
-+    uint32_t a_my);
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_jpeg__decoder__num_decoded_frames(
--    const wuffs_jpeg__decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
--
--  if (self->private_impl.f_call_sequence > 64u) {
--    return 1u;
--  }
--  return 0u;
--}
--
--// -------- func jpeg.decoder.restart_frame
-+static uint32_t
-+wuffs_jpeg__decoder__decode_mcu__choosy_default(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__slice_u8 a_workbuf,
-+    uint32_t a_mx,
-+    uint32_t a_my);
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_jpeg__decoder__restart_frame(
-+static uint32_t
-+wuffs_jpeg__decoder__decode_mcu_progressive_ac_high_bits(
-     wuffs_jpeg__decoder* self,
--    uint64_t a_index,
--    uint64_t a_io_position) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--
--  uint32_t v_i = 0;
--  uint32_t v_j = 0;
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__slice_u8 a_workbuf,
-+    uint32_t a_mx,
-+    uint32_t a_my);
- 
--  if (self->private_impl.f_call_sequence < 32u) {
--    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
--  }
--  if (a_index != 0u) {
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  self->private_impl.f_call_sequence = 40u;
--  self->private_impl.f_bitstream_is_closed = false;
--  self->private_impl.f_frame_config_io_position = a_io_position;
--  self->private_impl.f_scan_count = 0u;
--  self->private_impl.f_restart_interval = self->private_impl.f_saved_restart_interval;
--  v_i = 0u;
--  while (v_i < 4u) {
--    self->private_impl.f_seen_dqt[v_i] = self->private_impl.f_saved_seen_dqt[v_i];
--    v_j = 0u;
--    while (v_j < 64u) {
--      self->private_impl.f_quant_tables[v_i][v_j] = self->private_impl.f_saved_quant_tables[v_i][v_j];
--      v_j += 1u;
--    }
--    v_i += 1u;
--  }
--  v_i = 0u;
--  while (v_i < 4u) {
--    v_j = 0u;
--    while (v_j < 10u) {
--      self->private_impl.f_block_smoothing_lowest_scan_al[v_i][v_j] = 16u;
--      v_j += 1u;
--    }
--    v_i += 1u;
--  }
--  v_i = 0u;
--  while (v_i < 8u) {
--    self->private_impl.f_seen_dht[v_i] = false;
--    v_i += 1u;
--  }
--  return wuffs_base__make_status(NULL);
--}
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint32_t
-+wuffs_jpeg__decoder__decode_mcu_progressive_ac_low_bit(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__slice_u8 a_workbuf,
-+    uint32_t a_mx,
-+    uint32_t a_my);
- 
--// -------- func jpeg.decoder.set_report_metadata
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint32_t
-+wuffs_jpeg__decoder__decode_mcu_progressive_dc_high_bits(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__slice_u8 a_workbuf,
-+    uint32_t a_mx,
-+    uint32_t a_my);
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_jpeg__decoder__set_report_metadata(
-+static uint32_t
-+wuffs_jpeg__decoder__decode_mcu_progressive_dc_low_bit(
-     wuffs_jpeg__decoder* self,
--    uint32_t a_fourcc,
--    bool a_report) {
--  return wuffs_base__make_empty_struct();
--}
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__slice_u8 a_workbuf,
-+    uint32_t a_mx,
-+    uint32_t a_my);
- 
--// -------- func jpeg.decoder.tell_me_more
-+// ---------------- VTables
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_jpeg__decoder__tell_me_more(
-+const wuffs_base__image_decoder__func_ptrs
-+wuffs_jpeg__decoder__func_ptrs_for__wuffs_base__image_decoder = {
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__pixel_buffer*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__pixel_blend,
-+      wuffs_base__slice_u8,
-+      wuffs_base__decode_frame_options*))(&wuffs_jpeg__decoder__decode_frame),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__frame_config*,
-+      wuffs_base__io_buffer*))(&wuffs_jpeg__decoder__decode_frame_config),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__image_config*,
-+      wuffs_base__io_buffer*))(&wuffs_jpeg__decoder__decode_image_config),
-+  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_jpeg__decoder__frame_dirty_rect),
-+  (uint64_t(*)(const void*,
-+      uint32_t))(&wuffs_jpeg__decoder__get_quirk),
-+  (uint32_t(*)(const void*))(&wuffs_jpeg__decoder__num_animation_loops),
-+  (uint64_t(*)(const void*))(&wuffs_jpeg__decoder__num_decoded_frame_configs),
-+  (uint64_t(*)(const void*))(&wuffs_jpeg__decoder__num_decoded_frames),
-+  (wuffs_base__status(*)(void*,
-+      uint64_t,
-+      uint64_t))(&wuffs_jpeg__decoder__restart_frame),
-+  (wuffs_base__status(*)(void*,
-+      uint32_t,
-+      uint64_t))(&wuffs_jpeg__decoder__set_quirk),
-+  (wuffs_base__empty_struct(*)(void*,
-+      uint32_t,
-+      bool))(&wuffs_jpeg__decoder__set_report_metadata),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__more_information*,
-+      wuffs_base__io_buffer*))(&wuffs_jpeg__decoder__tell_me_more),
-+  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_jpeg__decoder__workbuf_len),
-+};
-+
-+// ---------------- Initializer Implementations
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_jpeg__decoder__initialize(
-     wuffs_jpeg__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__more_information* a_minfo,
--    wuffs_base__io_buffer* a_src) {
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options){
-   if (!self) {
-     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
-+  if (sizeof(*self) != sizeof_star_self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-   }
--  if (!a_dst || !a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
-+      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-   }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 4)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+
-+  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
-+    // The whole point of this if-check is to detect an uninitialized *self.
-+    // We disable the warning on GCC. Clang-5.0 does not have this warning.
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+#endif
-+    if (self->private_impl.magic != 0) {
-+      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+    }
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+  } else {
-+    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
-+      memset(self, 0, sizeof(*self));
-+      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-+    } else {
-+      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+    }
-   }
--  self->private_impl.active_coroutine = 0;
--  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  status = wuffs_base__make_status(wuffs_base__error__no_more_information);
--  goto exit;
-+  self->private_impl.choosy_decode_idct = &wuffs_jpeg__decoder__decode_idct__choosy_default;
-+  self->private_impl.choosy_load_mcu_blocks_for_single_component = &wuffs_jpeg__decoder__load_mcu_blocks_for_single_component__choosy_default;
-+  self->private_impl.choosy_decode_mcu = &wuffs_jpeg__decoder__decode_mcu__choosy_default;
- 
--  goto ok;
--  ok:
--  goto exit;
--  exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--  }
--  return status;
-+  self->private_impl.magic = WUFFS_BASE__MAGIC;
-+  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
-+      wuffs_base__image_decoder__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
-+      (const void*)(&wuffs_jpeg__decoder__func_ptrs_for__wuffs_base__image_decoder);
-+  return wuffs_base__make_status(NULL);
- }
- 
--// -------- func jpeg.decoder.history_retain_length
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_jpeg__decoder__history_retain_length(
--    const wuffs_jpeg__decoder* self) {
--  if (!self) {
--    return 0;
-+wuffs_jpeg__decoder*
-+wuffs_jpeg__decoder__alloc(void) {
-+  wuffs_jpeg__decoder* x =
-+      (wuffs_jpeg__decoder*)(calloc(1, sizeof(wuffs_jpeg__decoder)));
-+  if (!x) {
-+    return NULL;
-   }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
-+  if (wuffs_jpeg__decoder__initialize(
-+      x, sizeof(wuffs_jpeg__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+    free(x);
-+    return NULL;
-   }
-+  return x;
-+}
- 
--  return 0u;
-+size_t
-+sizeof__wuffs_jpeg__decoder(void) {
-+  return sizeof(wuffs_jpeg__decoder);
- }
- 
--// -------- func jpeg.decoder.workbuf_len
-+// ---------------- Function Implementations
-+
-+// -------- func jpeg.decoder.decode_idct
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_jpeg__decoder__workbuf_len(
--    const wuffs_jpeg__decoder* self) {
--  if (!self) {
--    return wuffs_base__utility__empty_range_ii_u64();
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_range_ii_u64();
--  }
--
--  return wuffs_base__utility__make_range_ii_u64(self->private_impl.f_components_workbuf_offsets[8u], self->private_impl.f_components_workbuf_offsets[8u]);
--}
--
--// -------- func jpeg.decoder.top_left_quants_has_zero
--
--WUFFS_BASE__GENERATED_C_CODE
--static bool
--wuffs_jpeg__decoder__top_left_quants_has_zero(
--    const wuffs_jpeg__decoder* self,
-+static wuffs_base__empty_struct
-+wuffs_jpeg__decoder__decode_idct(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__slice_u8 a_dst_buffer,
-+    uint64_t a_dst_stride,
-     uint32_t a_q) {
--  return ((self->private_impl.f_quant_tables[a_q][0u] == 0u) ||
--      (self->private_impl.f_quant_tables[a_q][1u] == 0u) ||
--      (self->private_impl.f_quant_tables[a_q][2u] == 0u) ||
--      (self->private_impl.f_quant_tables[a_q][3u] == 0u) ||
--      (self->private_impl.f_quant_tables[a_q][8u] == 0u) ||
--      (self->private_impl.f_quant_tables[a_q][9u] == 0u) ||
--      (self->private_impl.f_quant_tables[a_q][10u] == 0u) ||
--      (self->private_impl.f_quant_tables[a_q][16u] == 0u) ||
--      (self->private_impl.f_quant_tables[a_q][17u] == 0u) ||
--      (self->private_impl.f_quant_tables[a_q][24u] == 0u));
-+  return (*self->private_impl.choosy_decode_idct)(self, a_dst_buffer, a_dst_stride, a_q);
- }
- 
--// -------- func jpeg.decoder.load_mcu_blocks_for_single_component_smooth
--
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__empty_struct
--wuffs_jpeg__decoder__load_mcu_blocks_for_single_component_smooth(
-+wuffs_jpeg__decoder__decode_idct__choosy_default(
-     wuffs_jpeg__decoder* self,
--    uint32_t a_mx,
--    uint32_t a_my,
--    wuffs_base__slice_u8 a_workbuf,
--    uint32_t a_csel) {
--  uint64_t v_stride16 = 0;
--  uint64_t v_offset = 0;
--  uint32_t v_dx = 0;
--  uint32_t v_dy = 0;
--  uint32_t v_mx = 0;
--  uint32_t v_my = 0;
--  uint8_t v_q = 0;
--  uint32_t v_q_00 = 0;
--  uint32_t v_q_xy = 0;
--  uint8_t v_al = 0;
--  uint32_t v_scratch = 0;
--  uint32_t v_limit = 0;
-+    wuffs_base__slice_u8 a_dst_buffer,
-+    uint64_t a_dst_stride,
-+    uint32_t a_q) {
-+  uint32_t v_bq0 = 0;
-+  uint32_t v_bq2 = 0;
-+  uint32_t v_bq4 = 0;
-+  uint32_t v_bq6 = 0;
-+  uint32_t v_ca = 0;
-+  uint32_t v_cb2 = 0;
-+  uint32_t v_cb6 = 0;
-+  uint32_t v_ccp = 0;
-+  uint32_t v_ccm = 0;
-+  uint32_t v_cd0 = 0;
-+  uint32_t v_cd1 = 0;
-+  uint32_t v_cd2 = 0;
-+  uint32_t v_cd3 = 0;
-+  uint32_t v_bq1 = 0;
-+  uint32_t v_bq3 = 0;
-+  uint32_t v_bq5 = 0;
-+  uint32_t v_bq7 = 0;
-+  uint32_t v_ci51 = 0;
-+  uint32_t v_ci53 = 0;
-+  uint32_t v_ci71 = 0;
-+  uint32_t v_ci73 = 0;
-+  uint32_t v_cj = 0;
-+  uint32_t v_ck1 = 0;
-+  uint32_t v_ck3 = 0;
-+  uint32_t v_ck5 = 0;
-+  uint32_t v_ck7 = 0;
-+  uint32_t v_cl51 = 0;
-+  uint32_t v_cl73 = 0;
-+  uint32_t v_in0 = 0;
-+  uint32_t v_in2 = 0;
-+  uint32_t v_in4 = 0;
-+  uint32_t v_in6 = 0;
-+  uint32_t v_ra = 0;
-+  uint32_t v_rb2 = 0;
-+  uint32_t v_rb6 = 0;
-+  uint32_t v_rcp = 0;
-+  uint32_t v_rcm = 0;
-+  uint32_t v_rd0 = 0;
-+  uint32_t v_rd1 = 0;
-+  uint32_t v_rd2 = 0;
-+  uint32_t v_rd3 = 0;
-+  uint32_t v_in1 = 0;
-+  uint32_t v_in3 = 0;
-+  uint32_t v_in5 = 0;
-+  uint32_t v_in7 = 0;
-+  uint32_t v_ri51 = 0;
-+  uint32_t v_ri53 = 0;
-+  uint32_t v_ri71 = 0;
-+  uint32_t v_ri73 = 0;
-+  uint32_t v_rj = 0;
-+  uint32_t v_rk1 = 0;
-+  uint32_t v_rk3 = 0;
-+  uint32_t v_rk5 = 0;
-+  uint32_t v_rk7 = 0;
-+  uint32_t v_rl51 = 0;
-+  uint32_t v_rl73 = 0;
-+  uint32_t v_intermediate[64] = {0};
- 
--  v_stride16 = ((uint64_t)((self->private_impl.f_components_workbuf_widths[a_csel] * 16u)));
--  v_offset = (self->private_impl.f_components_workbuf_offsets[(a_csel | 4u)] + (((uint64_t)(a_mx)) * 128u) + (((uint64_t)(a_my)) * v_stride16));
--  if (v_offset <= ((uint64_t)(a_workbuf.len))) {
--    wuffs_base__bulk_load_host_endian(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset));
-+  if (8u > a_dst_stride) {
-+    return wuffs_base__make_empty_struct();
-   }
--  v_dy = 0u;
--  while (v_dy < 5u) {
--    v_my = wuffs_base__u32__min(self->private_impl.f_block_smoothing_my_max_incl, wuffs_base__u32__sat_sub((a_my + v_dy), 2u));
--    v_dx = 0u;
--    while (v_dx < 5u) {
--      v_mx = wuffs_base__u32__min(self->private_impl.f_block_smoothing_mx_max_incl, wuffs_base__u32__sat_sub((a_mx + v_dx), 2u));
--      v_offset = (self->private_impl.f_components_workbuf_offsets[(a_csel | 4u)] + (((uint64_t)(v_mx)) * 128u) + (((uint64_t)(v_my)) * v_stride16));
--      if (v_offset <= ((uint64_t)(a_workbuf.len))) {
--        wuffs_base__bulk_load_host_endian(&self->private_impl.f_block_smoothing_dc_values[v_dy][v_dx], 1u * (size_t)2u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset));
--      }
--      v_dx += 1u;
--    }
--    v_dy += 1u;
-+  if (0u == (self->private_data.f_mcu_blocks[0u][8u] |
-+      self->private_data.f_mcu_blocks[0u][16u] |
-+      self->private_data.f_mcu_blocks[0u][24u] |
-+      self->private_data.f_mcu_blocks[0u][32u] |
-+      self->private_data.f_mcu_blocks[0u][40u] |
-+      self->private_data.f_mcu_blocks[0u][48u] |
-+      self->private_data.f_mcu_blocks[0u][56u])) {
-+    v_intermediate[0u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][0u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][0u])))) << 2u));
-+    v_intermediate[8u] = v_intermediate[0u];
-+    v_intermediate[16u] = v_intermediate[0u];
-+    v_intermediate[24u] = v_intermediate[0u];
-+    v_intermediate[32u] = v_intermediate[0u];
-+    v_intermediate[40u] = v_intermediate[0u];
-+    v_intermediate[48u] = v_intermediate[0u];
-+    v_intermediate[56u] = v_intermediate[0u];
-+  } else {
-+    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][16u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][16u]))));
-+    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][48u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][48u]))));
-+    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
-+    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
-+    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
-+    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][0u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][0u]))));
-+    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][32u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][32u]))));
-+    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
-+    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
-+    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
-+    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
-+    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
-+    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
-+    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][8u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][8u]))));
-+    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][24u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][24u]))));
-+    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][40u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][40u]))));
-+    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][56u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][56u]))));
-+    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
-+    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
-+    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
-+    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
-+    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
-+    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
-+    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
-+    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
-+    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
-+    v_ci51 *= 4294964100u;
-+    v_ci53 *= 4294946301u;
-+    v_ci71 *= 4294959923u;
-+    v_ci73 *= 4294951227u;
-+    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
-+    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
-+    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
-+    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
-+    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
-+    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
-+    v_intermediate[0u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
-+    v_intermediate[56u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
-+    v_intermediate[8u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
-+    v_intermediate[48u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
-+    v_intermediate[16u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
-+    v_intermediate[40u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
-+    v_intermediate[24u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
-+    v_intermediate[32u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
-   }
--  v_q = self->private_impl.f_components_tq[a_csel];
--  v_q_00 = ((uint32_t)(self->private_impl.f_quant_tables[v_q][0u]));
--  if (v_q_00 <= 0u) {
--    return wuffs_base__make_empty_struct();
-+  if (0u == (self->private_data.f_mcu_blocks[0u][9u] |
-+      self->private_data.f_mcu_blocks[0u][17u] |
-+      self->private_data.f_mcu_blocks[0u][25u] |
-+      self->private_data.f_mcu_blocks[0u][33u] |
-+      self->private_data.f_mcu_blocks[0u][41u] |
-+      self->private_data.f_mcu_blocks[0u][49u] |
-+      self->private_data.f_mcu_blocks[0u][57u])) {
-+    v_intermediate[1u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][1u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][1u])))) << 2u));
-+    v_intermediate[9u] = v_intermediate[1u];
-+    v_intermediate[17u] = v_intermediate[1u];
-+    v_intermediate[25u] = v_intermediate[1u];
-+    v_intermediate[33u] = v_intermediate[1u];
-+    v_intermediate[41u] = v_intermediate[1u];
-+    v_intermediate[49u] = v_intermediate[1u];
-+    v_intermediate[57u] = v_intermediate[1u];
-+  } else {
-+    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][17u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][17u]))));
-+    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][49u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][49u]))));
-+    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
-+    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
-+    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
-+    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][1u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][1u]))));
-+    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][33u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][33u]))));
-+    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
-+    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
-+    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
-+    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
-+    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
-+    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
-+    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][9u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][9u]))));
-+    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][25u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][25u]))));
-+    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][41u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][41u]))));
-+    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][57u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][57u]))));
-+    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
-+    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
-+    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
-+    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
-+    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
-+    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
-+    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
-+    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
-+    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
-+    v_ci51 *= 4294964100u;
-+    v_ci53 *= 4294946301u;
-+    v_ci71 *= 4294959923u;
-+    v_ci73 *= 4294951227u;
-+    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
-+    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
-+    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
-+    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
-+    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
-+    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
-+    v_intermediate[1u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
-+    v_intermediate[57u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
-+    v_intermediate[9u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
-+    v_intermediate[49u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
-+    v_intermediate[17u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
-+    v_intermediate[41u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
-+    v_intermediate[25u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
-+    v_intermediate[33u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
-   }
--  if (0u != (16u &
--      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][1u] &
--      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][2u] &
--      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][3u] &
--      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][4u] &
--      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][5u] &
--      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][6u] &
--      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][7u] &
--      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][8u] &
--      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][9u])) {
--    v_scratch = 0u;
--    v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
--    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
--    v_scratch += ((uint32_t)(4294967288u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
--    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
--    v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
--    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
--    v_scratch += ((uint32_t)(6u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
--    v_scratch += ((uint32_t)(42u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
--    v_scratch += ((uint32_t)(6u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
--    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
--    v_scratch += ((uint32_t)(4294967288u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
--    v_scratch += ((uint32_t)(42u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
--    v_scratch += ((uint32_t)(152u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
--    v_scratch += ((uint32_t)(42u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
--    v_scratch += ((uint32_t)(4294967288u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
--    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
--    v_scratch += ((uint32_t)(6u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
--    v_scratch += ((uint32_t)(42u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
--    v_scratch += ((uint32_t)(6u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
--    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
--    v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
--    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
--    v_scratch += ((uint32_t)(4294967288u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
--    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
--    v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
--    if (v_scratch < 2147483648u) {
--      v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + 128u)) / 256u)));
--    } else {
--      v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + 128u)) / 256u)));
--    }
--    self->private_data.f_mcu_blocks[0u][0u] = ((uint16_t)(v_scratch));
--    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][1u]));
--    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][1u] == 0u)) {
--      v_scratch = 0u;
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
--      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
--      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
--      v_scratch += ((uint32_t)(4294967283u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
--      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
--      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
--      v_scratch += ((uint32_t)(38u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
--      v_scratch += ((uint32_t)(4294967258u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
--      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
--      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
--      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
--      v_scratch += ((uint32_t)(4294967283u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
--      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
--      v_scratch *= v_q_00;
--      if (v_scratch < 2147483648u) {
--        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
--      } else {
--        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
--      }
--      self->private_data.f_mcu_blocks[0u][1u] = ((uint16_t)(v_scratch));
--    }
--    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][2u]));
--    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][2u] == 0u)) {
--      v_scratch = 0u;
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
--      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
--      v_scratch += ((uint32_t)(4294967291u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
--      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
--      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
--      v_scratch += ((uint32_t)(4294967282u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
--      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
--      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
--      v_scratch += ((uint32_t)(4294967291u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
--      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
--      v_scratch *= v_q_00;
--      if (v_scratch < 2147483648u) {
--        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
--      } else {
--        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
--      }
--      self->private_data.f_mcu_blocks[0u][2u] = ((uint16_t)(v_scratch));
--    }
--    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][3u]));
--    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][3u] == 0u)) {
--      v_scratch = 0u;
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
--      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
--      v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
--      v_scratch *= v_q_00;
--      if (v_scratch < 2147483648u) {
--        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
--      } else {
--        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
--      }
--      self->private_data.f_mcu_blocks[0u][3u] = ((uint16_t)(v_scratch));
--    }
--    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][8u]));
--    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][8u] == 0u)) {
--      v_scratch = 0u;
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
--      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
--      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
--      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
--      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
--      v_scratch += ((uint32_t)(38u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
--      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
--      v_scratch += ((uint32_t)(4294967283u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
--      v_scratch += ((uint32_t)(4294967258u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
--      v_scratch += ((uint32_t)(4294967283u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
--      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
--      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
--      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
--      v_scratch *= v_q_00;
--      if (v_scratch < 2147483648u) {
--        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
--      } else {
--        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
--      }
--      self->private_data.f_mcu_blocks[0u][8u] = ((uint16_t)(v_scratch));
--    }
--    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][9u]));
--    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][9u] == 0u)) {
--      v_scratch = 0u;
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
--      v_scratch += ((uint32_t)(9u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
--      v_scratch += ((uint32_t)(4294967287u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
--      v_scratch += ((uint32_t)(4294967287u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
--      v_scratch += ((uint32_t)(9u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
--      v_scratch *= v_q_00;
--      if (v_scratch < 2147483648u) {
--        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
--      } else {
--        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
--      }
--      self->private_data.f_mcu_blocks[0u][9u] = ((uint16_t)(v_scratch));
--    }
--    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][10u]));
--    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][10u] == 0u)) {
--      v_scratch = 0u;
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
--      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
--      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
--      v_scratch *= v_q_00;
--      if (v_scratch < 2147483648u) {
--        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
--      } else {
--        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
--      }
--      self->private_data.f_mcu_blocks[0u][10u] = ((uint16_t)(v_scratch));
--    }
--    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][16u]));
--    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][16u] == 0u)) {
--      v_scratch = 0u;
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
--      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
--      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
--      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
--      v_scratch += ((uint32_t)(4294967291u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
--      v_scratch += ((uint32_t)(4294967282u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
--      v_scratch += ((uint32_t)(4294967291u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
--      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
--      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
--      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
--      v_scratch *= v_q_00;
--      if (v_scratch < 2147483648u) {
--        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
--      } else {
--        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
--      }
--      self->private_data.f_mcu_blocks[0u][16u] = ((uint16_t)(v_scratch));
--    }
--    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][17u]));
--    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][17u] == 0u)) {
--      v_scratch = 0u;
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
--      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
--      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
--      v_scratch *= v_q_00;
--      if (v_scratch < 2147483648u) {
--        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
--      } else {
--        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
--      }
--      self->private_data.f_mcu_blocks[0u][17u] = ((uint16_t)(v_scratch));
--    }
--    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][24u]));
--    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][24u] == 0u)) {
--      v_scratch = 0u;
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
--      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
--      v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
--      v_scratch *= v_q_00;
--      if (v_scratch < 2147483648u) {
--        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
--      } else {
--        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
--      }
--      self->private_data.f_mcu_blocks[0u][24u] = ((uint16_t)(v_scratch));
--    }
-+  if (0u == (self->private_data.f_mcu_blocks[0u][10u] |
-+      self->private_data.f_mcu_blocks[0u][18u] |
-+      self->private_data.f_mcu_blocks[0u][26u] |
-+      self->private_data.f_mcu_blocks[0u][34u] |
-+      self->private_data.f_mcu_blocks[0u][42u] |
-+      self->private_data.f_mcu_blocks[0u][50u] |
-+      self->private_data.f_mcu_blocks[0u][58u])) {
-+    v_intermediate[2u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][2u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][2u])))) << 2u));
-+    v_intermediate[10u] = v_intermediate[2u];
-+    v_intermediate[18u] = v_intermediate[2u];
-+    v_intermediate[26u] = v_intermediate[2u];
-+    v_intermediate[34u] = v_intermediate[2u];
-+    v_intermediate[42u] = v_intermediate[2u];
-+    v_intermediate[50u] = v_intermediate[2u];
-+    v_intermediate[58u] = v_intermediate[2u];
-   } else {
--    v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][1u];
--    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][1u]));
--    if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][1u] == 0u)) {
--      v_limit = ((((uint32_t)(1u)) << v_al) - 1u);
--      v_scratch = 0u;
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
--      v_scratch += ((uint32_t)(4294967289u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
--      v_scratch += ((uint32_t)(50u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
--      v_scratch += ((uint32_t)(4294967246u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
--      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
--      v_scratch *= v_q_00;
--      if (v_scratch < 2147483648u) {
--        v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
--      } else {
--        v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
--      }
--      self->private_data.f_mcu_blocks[0u][1u] = ((uint16_t)(v_scratch));
--    }
--    v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][5u];
--    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][2u]));
--    if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][2u] == 0u)) {
--      v_limit = ((((uint32_t)(1u)) << v_al) - 1u);
--      v_scratch = 0u;
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
--      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
--      v_scratch += ((uint32_t)(4294967272u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
--      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
--      v_scratch *= v_q_00;
--      if (v_scratch < 2147483648u) {
--        v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
--      } else {
--        v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
--      }
--      self->private_data.f_mcu_blocks[0u][2u] = ((uint16_t)(v_scratch));
--    }
--    v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][2u];
--    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][8u]));
--    if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][8u] == 0u)) {
--      v_limit = ((((uint32_t)(1u)) << v_al) - 1u);
--      v_scratch = 0u;
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
--      v_scratch += ((uint32_t)(4294967289u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
--      v_scratch += ((uint32_t)(50u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
--      v_scratch += ((uint32_t)(4294967246u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
--      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
--      v_scratch *= v_q_00;
--      if (v_scratch < 2147483648u) {
--        v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
--      } else {
--        v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
--      }
--      self->private_data.f_mcu_blocks[0u][8u] = ((uint16_t)(v_scratch));
--    }
--    v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][4u];
--    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][9u]));
--    if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][9u] == 0u)) {
--      v_limit = ((((uint32_t)(1u)) << v_al) - 1u);
--      v_scratch = 0u;
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
--      v_scratch += ((uint32_t)(10u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
--      v_scratch += ((uint32_t)(4294967286u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
--      v_scratch += ((uint32_t)(4294967286u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
--      v_scratch += ((uint32_t)(10u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
--      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
--      v_scratch *= v_q_00;
--      if (v_scratch < 2147483648u) {
--        v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
--      } else {
--        v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
--      }
--      self->private_data.f_mcu_blocks[0u][9u] = ((uint16_t)(v_scratch));
--    }
--    v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][3u];
--    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][16u]));
--    if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][16u] == 0u)) {
--      v_limit = ((((uint32_t)(1u)) << v_al) - 1u);
--      v_scratch = 0u;
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
--      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
--      v_scratch += ((uint32_t)(4294967272u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
--      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
--      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
--      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
--      v_scratch *= v_q_00;
--      if (v_scratch < 2147483648u) {
--        v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
--      } else {
--        v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
--      }
--      self->private_data.f_mcu_blocks[0u][16u] = ((uint16_t)(v_scratch));
--    }
-+    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][18u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][18u]))));
-+    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][50u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][50u]))));
-+    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
-+    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
-+    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
-+    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][2u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][2u]))));
-+    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][34u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][34u]))));
-+    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
-+    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
-+    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
-+    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
-+    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
-+    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
-+    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][10u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][10u]))));
-+    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][26u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][26u]))));
-+    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][42u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][42u]))));
-+    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][58u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][58u]))));
-+    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
-+    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
-+    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
-+    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
-+    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
-+    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
-+    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
-+    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
-+    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
-+    v_ci51 *= 4294964100u;
-+    v_ci53 *= 4294946301u;
-+    v_ci71 *= 4294959923u;
-+    v_ci73 *= 4294951227u;
-+    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
-+    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
-+    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
-+    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
-+    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
-+    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
-+    v_intermediate[2u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
-+    v_intermediate[58u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
-+    v_intermediate[10u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
-+    v_intermediate[50u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
-+    v_intermediate[18u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
-+    v_intermediate[42u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
-+    v_intermediate[26u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
-+    v_intermediate[34u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
-   }
--  return wuffs_base__make_empty_struct();
--}
--
--// -------- func jpeg.decoder.decode_mcu
--
--WUFFS_BASE__GENERATED_C_CODE
--static uint32_t
--wuffs_jpeg__decoder__decode_mcu(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__slice_u8 a_workbuf,
--    uint32_t a_mx,
--    uint32_t a_my) {
--  return (*self->private_impl.choosy_decode_mcu)(self, a_workbuf, a_mx, a_my);
--}
--
--WUFFS_BASE__GENERATED_C_CODE
--static uint32_t
--wuffs_jpeg__decoder__decode_mcu__choosy_default(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__slice_u8 a_workbuf,
--    uint32_t a_mx,
--    uint32_t a_my) {
--  uint32_t v_ret = 0;
--  uint64_t v_bits = 0;
--  uint32_t v_n_bits = 0;
--  uint8_t v_csel = 0;
--  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
--  wuffs_base__io_buffer* v_r = &u_r;
--  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint32_t v_pos = 0;
--  uint8_t v_dc_h = 0;
--  uint32_t v_dc_symbol = 0;
--  uint32_t v_dc_ht_fast = 0;
--  uint32_t v_dc_bl = 0;
--  uint32_t v_dc_code = 0;
--  uint32_t v_dc_blm1 = 0;
--  uint32_t v_dc_ht_slow = 0;
--  uint16_t v_dc_value = 0;
--  uint16_t v_dc_extend = 0;
--  const uint16_t* v_ac_huff_table_fast = NULL;
--  uint8_t v_ac_h = 0;
--  uint32_t v_ac_symbol = 0;
--  uint32_t v_ac_ht_fast = 0;
--  uint32_t v_ac_bl = 0;
--  uint32_t v_ac_code = 0;
--  uint32_t v_ac_blm1 = 0;
--  uint32_t v_ac_ht_slow = 0;
--  uint16_t v_ac_value = 0;
--  uint16_t v_ac_extend = 0;
--  uint32_t v_ac_rrrr = 0;
--  uint32_t v_ac_ssss = 0;
--  uint32_t v_z = 0;
--  uint32_t v_mcb = 0;
--  uint64_t v_stride = 0;
--  uint64_t v_offset = 0;
--
--  v_bits = self->private_impl.f_bitstream_bits;
--  v_n_bits = self->private_impl.f_bitstream_n_bits;
--  if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) {
--    return 2u;
-+  if (0u == (self->private_data.f_mcu_blocks[0u][11u] |
-+      self->private_data.f_mcu_blocks[0u][19u] |
-+      self->private_data.f_mcu_blocks[0u][27u] |
-+      self->private_data.f_mcu_blocks[0u][35u] |
-+      self->private_data.f_mcu_blocks[0u][43u] |
-+      self->private_data.f_mcu_blocks[0u][51u] |
-+      self->private_data.f_mcu_blocks[0u][59u])) {
-+    v_intermediate[3u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][3u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][3u])))) << 2u));
-+    v_intermediate[11u] = v_intermediate[3u];
-+    v_intermediate[19u] = v_intermediate[3u];
-+    v_intermediate[27u] = v_intermediate[3u];
-+    v_intermediate[35u] = v_intermediate[3u];
-+    v_intermediate[43u] = v_intermediate[3u];
-+    v_intermediate[51u] = v_intermediate[3u];
-+    v_intermediate[59u] = v_intermediate[3u];
-+  } else {
-+    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][19u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][19u]))));
-+    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][51u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][51u]))));
-+    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
-+    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
-+    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
-+    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][3u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][3u]))));
-+    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][35u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][35u]))));
-+    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
-+    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
-+    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
-+    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
-+    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
-+    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
-+    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][11u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][11u]))));
-+    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][27u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][27u]))));
-+    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][43u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][43u]))));
-+    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][59u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][59u]))));
-+    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
-+    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
-+    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
-+    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
-+    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
-+    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
-+    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
-+    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
-+    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
-+    v_ci51 *= 4294964100u;
-+    v_ci53 *= 4294946301u;
-+    v_ci71 *= 4294959923u;
-+    v_ci73 *= 4294951227u;
-+    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
-+    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
-+    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
-+    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
-+    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
-+    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
-+    v_intermediate[3u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
-+    v_intermediate[59u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
-+    v_intermediate[11u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
-+    v_intermediate[51u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
-+    v_intermediate[19u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
-+    v_intermediate[43u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
-+    v_intermediate[27u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
-+    v_intermediate[35u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
-   }
--  {
--    wuffs_base__io_buffer* o_0_v_r = v_r;
--    const uint8_t *o_0_iop_v_r = iop_v_r;
--    const uint8_t *o_0_io0_v_r = io0_v_r;
--    const uint8_t *o_0_io1_v_r = io1_v_r;
--    const uint8_t *o_0_io2_v_r = io2_v_r;
--    v_r = wuffs_base__io_reader__set(
--        &u_r,
--        &iop_v_r,
--        &io0_v_r,
--        &io1_v_r,
--        &io2_v_r,
--        wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
--        self->private_impl.f_bitstream_ri,
--        self->private_impl.f_bitstream_wi),
--        ((uint64_t)(self->private_impl.f_bitstream_ri)));
--    do {
--      while (self->private_impl.f_mcu_current_block < self->private_impl.f_mcu_num_blocks) {
--        while (self->private_impl.f_mcu_zig_index <= 0u) {
--          wuffs_base__bulk_memset(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, 0u);
--          if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
--            v_ret = 1u;
--            goto label__goto_done__break;
--          }
--          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
--          iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
--          v_n_bits |= 56u;
--          v_dc_h = self->private_impl.f_mcu_blocks_dc_hselector[self->private_impl.f_mcu_current_block];
--          v_dc_ht_fast = ((uint32_t)(self->private_impl.f_huff_tables_fast[v_dc_h][(v_bits >> 56u)]));
--          v_dc_bl = (v_dc_ht_fast >> 8u);
--          if (v_n_bits >= v_dc_bl) {
--            v_dc_symbol = (15u & v_dc_ht_fast);
--            v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
--            v_bits <<= (v_dc_bl & 63u);
--            v_n_bits -= v_dc_bl;
--          } else {
--            v_dc_code = ((uint32_t)((v_bits >> 55u)));
--            v_dc_blm1 = 8u;
--            v_bits <<= 9u;
--            v_n_bits -= 9u;
--            while (true) {
--              v_dc_ht_slow = self->private_impl.f_huff_tables_slow[v_dc_h][v_dc_blm1];
--              if (v_dc_code < (v_dc_ht_slow >> 8u)) {
--                v_dc_symbol = (15u & ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_dc_h][(255u & ((uint32_t)(v_dc_code + v_dc_ht_slow)))])));
--                v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
--                break;
--              }
--              v_dc_code = (((uint32_t)(v_dc_code << 1u)) | ((uint32_t)((v_bits >> 63u))));
--              v_bits <<= 1u;
--              v_n_bits -= 1u;
--              v_dc_blm1 = ((v_dc_blm1 + 1u) & 15u);
--              if (v_dc_blm1 == 0u) {
--                v_dc_symbol = 0u;
--                v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
--                break;
--              }
--            }
--          }
--          v_dc_value = ((uint16_t)(((v_bits >> 32u) >> (32u - v_dc_symbol))));
--          v_dc_value += (v_dc_extend & (((uint16_t)(wuffs_base__utility__sign_extend_rshift_u64(v_bits, 63u))) ^ 65535u));
--          v_bits <<= v_dc_symbol;
--          v_n_bits -= v_dc_symbol;
--          v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[self->private_impl.f_mcu_current_block]];
--          self->private_impl.f_mcu_previous_dc_values[v_csel] += v_dc_value;
--          self->private_data.f_mcu_blocks[0u][0u] = self->private_impl.f_mcu_previous_dc_values[v_csel];
--          self->private_impl.f_mcu_zig_index = 1u;
--          break;
--        }
--        if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
--          v_ret = 1u;
--          goto label__goto_done__break;
--        }
--        if (v_n_bits < 16u) {
--          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
--        }
--        v_z = 1u;
--        self->private_impl.f_mcu_zig_index = 0u;
--        v_ac_h = self->private_impl.f_mcu_blocks_ac_hselector[self->private_impl.f_mcu_current_block];
--        v_ac_huff_table_fast = &self->private_impl.f_huff_tables_fast[v_ac_h][0u];
--        while (v_z < 64u) {
--          v_ac_ht_fast = ((uint32_t)(v_ac_huff_table_fast[(v_bits >> 56u)]));
--          if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
--            v_ret = 2u;
--            goto label__goto_done__break;
--          }
--          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
--          iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
--          v_n_bits |= 56u;
--          v_ac_bl = (v_ac_ht_fast >> 8u);
--          if (v_n_bits >= v_ac_bl) {
--            v_ac_symbol = (255u & v_ac_ht_fast);
--            v_bits <<= (v_ac_bl & 63u);
--            v_n_bits -= v_ac_bl;
--          } else {
--            v_ac_code = ((uint32_t)((v_bits >> 55u)));
--            v_ac_blm1 = 8u;
--            v_bits <<= 9u;
--            v_n_bits -= 9u;
--            while (true) {
--              v_ac_ht_slow = self->private_impl.f_huff_tables_slow[v_ac_h][v_ac_blm1];
--              if (v_ac_code < (v_ac_ht_slow >> 8u)) {
--                v_ac_symbol = ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_ac_h][(255u & ((uint32_t)(v_ac_code + v_ac_ht_slow)))]));
--                break;
--              }
--              v_ac_code = (((uint32_t)(v_ac_code << 1u)) | ((uint32_t)((v_bits >> 63u))));
--              v_bits <<= 1u;
--              v_n_bits -= 1u;
--              v_ac_blm1 = ((v_ac_blm1 + 1u) & 15u);
--              if (v_ac_blm1 == 0u) {
--                v_ac_symbol = 0u;
--                break;
--              }
--            }
--          }
--          v_ac_rrrr = (v_ac_symbol >> 4u);
--          v_z += (v_ac_rrrr + 1u);
--          v_ac_ssss = (v_ac_symbol & 15u);
--          v_ac_extend = WUFFS_JPEG__EXTEND[v_ac_ssss];
--          if (v_ac_ssss > 0u) {
--            v_ac_value = ((uint16_t)((v_bits >> (64u - v_ac_ssss))));
--            v_ac_value += (v_ac_extend & (((uint16_t)(wuffs_base__utility__sign_extend_rshift_u64(v_bits, 63u))) ^ 65535u));
--            v_bits <<= v_ac_ssss;
--            v_n_bits -= v_ac_ssss;
--            self->private_data.f_mcu_blocks[0u][WUFFS_JPEG__UNZIG[v_z]] = v_ac_value;
--          } else if (v_ac_rrrr < 15u) {
--            break;
--          }
--        }
--        v_mcb = self->private_impl.f_mcu_current_block;
--        self->private_impl.f_mcu_current_block += 1u;
--        if (self->private_impl.f_test_only_interrupt_decode_mcu) {
--          goto label__goto_done__break;
--        }
--        v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[v_mcb]];
--        v_stride = ((uint64_t)(self->private_impl.f_components_workbuf_widths[v_csel]));
--        v_offset = (self->private_impl.f_mcu_blocks_offset[v_mcb] + (((uint64_t)(self->private_impl.f_mcu_blocks_mx_mul[v_mcb])) * ((uint64_t)(a_mx))) + (((uint64_t)(self->private_impl.f_mcu_blocks_my_mul[v_mcb])) * ((uint64_t)(a_my))));
--        if (v_offset <= ((uint64_t)(a_workbuf.len))) {
--          wuffs_jpeg__decoder__decode_idct(self, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset), v_stride, ((uint32_t)(self->private_impl.f_components_tq[v_csel])));
--        }
--      }
--      self->private_impl.f_mcu_current_block = 0u;
--    } while (0);
--    label__goto_done__break:;
--    v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r)))));
--    if (v_pos > self->private_impl.f_bitstream_wi) {
--      v_ret = 2u;
--    } else {
--      self->private_impl.f_bitstream_ri = v_pos;
--    }
--    v_r = o_0_v_r;
--    iop_v_r = o_0_iop_v_r;
--    io0_v_r = o_0_io0_v_r;
--    io1_v_r = o_0_io1_v_r;
--    io2_v_r = o_0_io2_v_r;
-+  if (0u == (self->private_data.f_mcu_blocks[0u][12u] |
-+      self->private_data.f_mcu_blocks[0u][20u] |
-+      self->private_data.f_mcu_blocks[0u][28u] |
-+      self->private_data.f_mcu_blocks[0u][36u] |
-+      self->private_data.f_mcu_blocks[0u][44u] |
-+      self->private_data.f_mcu_blocks[0u][52u] |
-+      self->private_data.f_mcu_blocks[0u][60u])) {
-+    v_intermediate[4u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][4u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][4u])))) << 2u));
-+    v_intermediate[12u] = v_intermediate[4u];
-+    v_intermediate[20u] = v_intermediate[4u];
-+    v_intermediate[28u] = v_intermediate[4u];
-+    v_intermediate[36u] = v_intermediate[4u];
-+    v_intermediate[44u] = v_intermediate[4u];
-+    v_intermediate[52u] = v_intermediate[4u];
-+    v_intermediate[60u] = v_intermediate[4u];
-+  } else {
-+    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][20u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][20u]))));
-+    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][52u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][52u]))));
-+    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
-+    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
-+    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
-+    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][4u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][4u]))));
-+    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][36u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][36u]))));
-+    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
-+    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
-+    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
-+    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
-+    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
-+    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
-+    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][12u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][12u]))));
-+    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][28u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][28u]))));
-+    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][44u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][44u]))));
-+    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][60u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][60u]))));
-+    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
-+    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
-+    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
-+    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
-+    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
-+    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
-+    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
-+    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
-+    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
-+    v_ci51 *= 4294964100u;
-+    v_ci53 *= 4294946301u;
-+    v_ci71 *= 4294959923u;
-+    v_ci73 *= 4294951227u;
-+    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
-+    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
-+    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
-+    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
-+    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
-+    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
-+    v_intermediate[4u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
-+    v_intermediate[60u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
-+    v_intermediate[12u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
-+    v_intermediate[52u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
-+    v_intermediate[20u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
-+    v_intermediate[44u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
-+    v_intermediate[28u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
-+    v_intermediate[36u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
-   }
--  self->private_impl.f_bitstream_bits = v_bits;
--  self->private_impl.f_bitstream_n_bits = v_n_bits;
--  return v_ret;
--}
--
--// -------- func jpeg.decoder.decode_mcu_progressive_ac_high_bits
--
--WUFFS_BASE__GENERATED_C_CODE
--static uint32_t
--wuffs_jpeg__decoder__decode_mcu_progressive_ac_high_bits(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__slice_u8 a_workbuf,
--    uint32_t a_mx,
--    uint32_t a_my) {
--  uint32_t v_ret = 0;
--  uint64_t v_bits = 0;
--  uint32_t v_n_bits = 0;
--  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
--  wuffs_base__io_buffer* v_r = &u_r;
--  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint32_t v_pos = 0;
--  const uint16_t* v_ac_huff_table_fast = NULL;
--  uint8_t v_ac_h = 0;
--  uint32_t v_ac_symbol = 0;
--  uint32_t v_ac_ht_fast = 0;
--  uint32_t v_ac_bl = 0;
--  uint32_t v_ac_code = 0;
--  uint32_t v_ac_blm1 = 0;
--  uint32_t v_ac_ht_slow = 0;
--  uint16_t v_ac_value = 0;
--  uint16_t v_ac_extend = 0;
--  uint32_t v_ac_rrrr = 0;
--  uint32_t v_ac_ssss = 0;
--  uint32_t v_z = 0;
--
--  if (self->private_impl.f_eob_run > 0u) {
--#if defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wconversion"
--#endif
--    self->private_impl.f_eob_run -= 1u;
--#if defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--    return 0u;
-+  if (0u == (self->private_data.f_mcu_blocks[0u][13u] |
-+      self->private_data.f_mcu_blocks[0u][21u] |
-+      self->private_data.f_mcu_blocks[0u][29u] |
-+      self->private_data.f_mcu_blocks[0u][37u] |
-+      self->private_data.f_mcu_blocks[0u][45u] |
-+      self->private_data.f_mcu_blocks[0u][53u] |
-+      self->private_data.f_mcu_blocks[0u][61u])) {
-+    v_intermediate[5u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][5u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][5u])))) << 2u));
-+    v_intermediate[13u] = v_intermediate[5u];
-+    v_intermediate[21u] = v_intermediate[5u];
-+    v_intermediate[29u] = v_intermediate[5u];
-+    v_intermediate[37u] = v_intermediate[5u];
-+    v_intermediate[45u] = v_intermediate[5u];
-+    v_intermediate[53u] = v_intermediate[5u];
-+    v_intermediate[61u] = v_intermediate[5u];
-+  } else {
-+    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][21u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][21u]))));
-+    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][53u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][53u]))));
-+    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
-+    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
-+    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
-+    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][5u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][5u]))));
-+    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][37u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][37u]))));
-+    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
-+    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
-+    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
-+    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
-+    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
-+    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
-+    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][13u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][13u]))));
-+    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][29u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][29u]))));
-+    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][45u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][45u]))));
-+    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][61u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][61u]))));
-+    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
-+    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
-+    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
-+    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
-+    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
-+    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
-+    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
-+    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
-+    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
-+    v_ci51 *= 4294964100u;
-+    v_ci53 *= 4294946301u;
-+    v_ci71 *= 4294959923u;
-+    v_ci73 *= 4294951227u;
-+    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
-+    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
-+    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
-+    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
-+    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
-+    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
-+    v_intermediate[5u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
-+    v_intermediate[61u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
-+    v_intermediate[13u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
-+    v_intermediate[53u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
-+    v_intermediate[21u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
-+    v_intermediate[45u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
-+    v_intermediate[29u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
-+    v_intermediate[37u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
-   }
--  v_bits = self->private_impl.f_bitstream_bits;
--  v_n_bits = self->private_impl.f_bitstream_n_bits;
--  if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) {
--    return 2u;
-+  if (0u == (self->private_data.f_mcu_blocks[0u][14u] |
-+      self->private_data.f_mcu_blocks[0u][22u] |
-+      self->private_data.f_mcu_blocks[0u][30u] |
-+      self->private_data.f_mcu_blocks[0u][38u] |
-+      self->private_data.f_mcu_blocks[0u][46u] |
-+      self->private_data.f_mcu_blocks[0u][54u] |
-+      self->private_data.f_mcu_blocks[0u][62u])) {
-+    v_intermediate[6u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][6u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][6u])))) << 2u));
-+    v_intermediate[14u] = v_intermediate[6u];
-+    v_intermediate[22u] = v_intermediate[6u];
-+    v_intermediate[30u] = v_intermediate[6u];
-+    v_intermediate[38u] = v_intermediate[6u];
-+    v_intermediate[46u] = v_intermediate[6u];
-+    v_intermediate[54u] = v_intermediate[6u];
-+    v_intermediate[62u] = v_intermediate[6u];
-+  } else {
-+    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][22u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][22u]))));
-+    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][54u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][54u]))));
-+    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
-+    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
-+    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
-+    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][6u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][6u]))));
-+    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][38u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][38u]))));
-+    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
-+    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
-+    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
-+    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
-+    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
-+    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
-+    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][14u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][14u]))));
-+    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][30u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][30u]))));
-+    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][46u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][46u]))));
-+    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][62u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][62u]))));
-+    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
-+    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
-+    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
-+    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
-+    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
-+    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
-+    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
-+    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
-+    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
-+    v_ci51 *= 4294964100u;
-+    v_ci53 *= 4294946301u;
-+    v_ci71 *= 4294959923u;
-+    v_ci73 *= 4294951227u;
-+    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
-+    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
-+    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
-+    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
-+    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
-+    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
-+    v_intermediate[6u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
-+    v_intermediate[62u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
-+    v_intermediate[14u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
-+    v_intermediate[54u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
-+    v_intermediate[22u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
-+    v_intermediate[46u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
-+    v_intermediate[30u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
-+    v_intermediate[38u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
-   }
--  {
--    wuffs_base__io_buffer* o_0_v_r = v_r;
--    const uint8_t *o_0_iop_v_r = iop_v_r;
--    const uint8_t *o_0_io0_v_r = io0_v_r;
--    const uint8_t *o_0_io1_v_r = io1_v_r;
--    const uint8_t *o_0_io2_v_r = io2_v_r;
--    v_r = wuffs_base__io_reader__set(
--        &u_r,
--        &iop_v_r,
--        &io0_v_r,
--        &io1_v_r,
--        &io2_v_r,
--        wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
--        self->private_impl.f_bitstream_ri,
--        self->private_impl.f_bitstream_wi),
--        ((uint64_t)(self->private_impl.f_bitstream_ri)));
--    do {
--      do {
--        if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
--          v_ret = 1u;
--          goto label__goto_done__break;
--        }
--        if (v_n_bits < 16u) {
--          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
--        }
--        v_z = self->private_impl.f_mcu_zig_index;
--        self->private_impl.f_mcu_zig_index = 0u;
--        v_ac_h = self->private_impl.f_mcu_blocks_ac_hselector[0u];
--        v_ac_huff_table_fast = &self->private_impl.f_huff_tables_fast[v_ac_h][0u];
--        while (v_z <= ((uint32_t)(self->private_impl.f_scan_se))) {
--          v_ac_ht_fast = ((uint32_t)(v_ac_huff_table_fast[(v_bits >> 56u)]));
--          if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
--            v_ret = 2u;
--            goto label__goto_done__break;
--          }
--          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
--          iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
--          v_n_bits |= 56u;
--          v_ac_bl = (v_ac_ht_fast >> 8u);
--          if (v_n_bits >= v_ac_bl) {
--            v_ac_symbol = (255u & v_ac_ht_fast);
--            v_bits <<= (v_ac_bl & 63u);
--            v_n_bits -= v_ac_bl;
--          } else {
--            v_ac_code = ((uint32_t)((v_bits >> 55u)));
--            v_ac_blm1 = 8u;
--            v_bits <<= 9u;
--            v_n_bits -= 9u;
--            while (true) {
--              v_ac_ht_slow = self->private_impl.f_huff_tables_slow[v_ac_h][v_ac_blm1];
--              if (v_ac_code < (v_ac_ht_slow >> 8u)) {
--                v_ac_symbol = ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_ac_h][(255u & ((uint32_t)(v_ac_code + v_ac_ht_slow)))]));
--                break;
--              }
--              v_ac_code = (((uint32_t)(v_ac_code << 1u)) | ((uint32_t)((v_bits >> 63u))));
--              v_bits <<= 1u;
--              v_n_bits -= 1u;
--              v_ac_blm1 = ((v_ac_blm1 + 1u) & 15u);
--              if (v_ac_blm1 == 0u) {
--                v_ac_symbol = 0u;
--                break;
--              }
--            }
--          }
--          v_ac_rrrr = (v_ac_symbol >> 4u);
--          v_z += (v_ac_rrrr + 1u);
--          v_ac_ssss = (v_ac_symbol & 15u);
--          v_ac_extend = WUFFS_JPEG__EXTEND[v_ac_ssss];
--          if (v_ac_ssss > 0u) {
--            v_ac_value = ((uint16_t)((v_bits >> (64u - v_ac_ssss))));
--            v_ac_value += (v_ac_extend & (((uint16_t)(wuffs_base__utility__sign_extend_rshift_u64(v_bits, 63u))) ^ 65535u));
--            v_bits <<= v_ac_ssss;
--            v_n_bits -= v_ac_ssss;
--            self->private_data.f_mcu_blocks[0u][WUFFS_JPEG__UNZIG[v_z]] = ((uint16_t)(((uint16_t)(v_ac_value << self->private_impl.f_scan_al))));
--          } else if (v_ac_rrrr < 15u) {
--            self->private_impl.f_eob_run = ((uint16_t)(((((uint16_t)(1u)) << v_ac_rrrr) - 1u)));
--            if (v_ac_rrrr > 0u) {
--              self->private_impl.f_eob_run += ((uint16_t)((v_bits >> (64u - v_ac_rrrr))));
--              v_bits <<= v_ac_rrrr;
--              v_n_bits -= v_ac_rrrr;
--            }
--            break;
--          }
--        }
--      } while (0);
--    } while (0);
--    label__goto_done__break:;
--    v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r)))));
--    if (v_pos > self->private_impl.f_bitstream_wi) {
--      v_ret = 2u;
--    } else {
--      self->private_impl.f_bitstream_ri = v_pos;
--    }
--    v_r = o_0_v_r;
--    iop_v_r = o_0_iop_v_r;
--    io0_v_r = o_0_io0_v_r;
--    io1_v_r = o_0_io1_v_r;
--    io2_v_r = o_0_io2_v_r;
-+  if (0u == (self->private_data.f_mcu_blocks[0u][15u] |
-+      self->private_data.f_mcu_blocks[0u][23u] |
-+      self->private_data.f_mcu_blocks[0u][31u] |
-+      self->private_data.f_mcu_blocks[0u][39u] |
-+      self->private_data.f_mcu_blocks[0u][47u] |
-+      self->private_data.f_mcu_blocks[0u][55u] |
-+      self->private_data.f_mcu_blocks[0u][63u])) {
-+    v_intermediate[7u] = ((uint32_t)(((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][7u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][7u])))) << 2u));
-+    v_intermediate[15u] = v_intermediate[7u];
-+    v_intermediate[23u] = v_intermediate[7u];
-+    v_intermediate[31u] = v_intermediate[7u];
-+    v_intermediate[39u] = v_intermediate[7u];
-+    v_intermediate[47u] = v_intermediate[7u];
-+    v_intermediate[55u] = v_intermediate[7u];
-+    v_intermediate[63u] = v_intermediate[7u];
-+  } else {
-+    v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][23u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][23u]))));
-+    v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][55u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][55u]))));
-+    v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433u));
-+    v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270u))));
-+    v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137u))));
-+    v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][7u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][7u]))));
-+    v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][39u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][39u]))));
-+    v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13u));
-+    v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13u));
-+    v_cd0 = ((uint32_t)(v_ccp + v_cb2));
-+    v_cd1 = ((uint32_t)(v_ccm + v_cb6));
-+    v_cd2 = ((uint32_t)(v_ccm - v_cb6));
-+    v_cd3 = ((uint32_t)(v_ccp - v_cb2));
-+    v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][15u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][15u]))));
-+    v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][31u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][31u]))));
-+    v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][47u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][47u]))));
-+    v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[0u][63u]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][63u]))));
-+    v_ci51 = ((uint32_t)(v_bq5 + v_bq1));
-+    v_ci53 = ((uint32_t)(v_bq5 + v_bq3));
-+    v_ci71 = ((uint32_t)(v_bq7 + v_bq1));
-+    v_ci73 = ((uint32_t)(v_bq7 + v_bq3));
-+    v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633u));
-+    v_ck1 = ((uint32_t)(v_bq1 * 12299u));
-+    v_ck3 = ((uint32_t)(v_bq3 * 25172u));
-+    v_ck5 = ((uint32_t)(v_bq5 * 16819u));
-+    v_ck7 = ((uint32_t)(v_bq7 * 2446u));
-+    v_ci51 *= 4294964100u;
-+    v_ci53 *= 4294946301u;
-+    v_ci71 *= 4294959923u;
-+    v_ci73 *= 4294951227u;
-+    v_cl51 = ((uint32_t)(v_ci51 + v_cj));
-+    v_cl73 = ((uint32_t)(v_ci73 + v_cj));
-+    v_ck1 += ((uint32_t)(v_ci71 + v_cl51));
-+    v_ck3 += ((uint32_t)(v_ci53 + v_cl73));
-+    v_ck5 += ((uint32_t)(v_ci53 + v_cl51));
-+    v_ck7 += ((uint32_t)(v_ci71 + v_cl73));
-+    v_intermediate[7u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024u)), 11u);
-+    v_intermediate[63u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024u)), 11u);
-+    v_intermediate[15u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024u)), 11u);
-+    v_intermediate[55u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024u)), 11u);
-+    v_intermediate[23u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024u)), 11u);
-+    v_intermediate[47u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024u)), 11u);
-+    v_intermediate[31u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024u)), 11u);
-+    v_intermediate[39u] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024u)), 11u);
-   }
--  self->private_impl.f_bitstream_bits = v_bits;
--  self->private_impl.f_bitstream_n_bits = v_n_bits;
--  return v_ret;
--}
--
--// -------- func jpeg.decoder.decode_mcu_progressive_ac_low_bit
--
--WUFFS_BASE__GENERATED_C_CODE
--static uint32_t
--wuffs_jpeg__decoder__decode_mcu_progressive_ac_low_bit(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__slice_u8 a_workbuf,
--    uint32_t a_mx,
--    uint32_t a_my) {
--  uint32_t v_ret = 0;
--  uint64_t v_bits = 0;
--  uint32_t v_n_bits = 0;
--  uint16_t v_one_lshift_scan_al = 0;
--  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
--  wuffs_base__io_buffer* v_r = &u_r;
--  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint32_t v_pos = 0;
--  const uint16_t* v_ac_huff_table_fast = NULL;
--  uint8_t v_ac_h = 0;
--  uint32_t v_ac_symbol = 0;
--  uint32_t v_ac_ht_fast = 0;
--  uint32_t v_ac_bl = 0;
--  uint32_t v_ac_code = 0;
--  uint32_t v_ac_blm1 = 0;
--  uint32_t v_ac_ht_slow = 0;
--  uint16_t v_ac_value = 0;
--  uint32_t v_ac_rrrr = 0;
--  uint32_t v_ac_ssss = 0;
--  uint8_t v_unzig = 0;
--  bool v_bit = false;
--
--  v_bits = self->private_impl.f_bitstream_bits;
--  v_n_bits = self->private_impl.f_bitstream_n_bits;
--  v_one_lshift_scan_al = (((uint16_t)(1u)) << self->private_impl.f_scan_al);
--  if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) {
--    return 2u;
--  }
--  {
--    wuffs_base__io_buffer* o_0_v_r = v_r;
--    const uint8_t *o_0_iop_v_r = iop_v_r;
--    const uint8_t *o_0_io0_v_r = io0_v_r;
--    const uint8_t *o_0_io1_v_r = io1_v_r;
--    const uint8_t *o_0_io2_v_r = io2_v_r;
--    v_r = wuffs_base__io_reader__set(
--        &u_r,
--        &iop_v_r,
--        &io0_v_r,
--        &io1_v_r,
--        &io2_v_r,
--        wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
--        self->private_impl.f_bitstream_ri,
--        self->private_impl.f_bitstream_wi),
--        ((uint64_t)(self->private_impl.f_bitstream_ri)));
--    do {
--      do {
--        if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
--          v_ret = 1u;
--          goto label__goto_done__break;
--        }
--        while (true) {
--          if (self->private_impl.f_eob_run > 0u) {
--            break;
--          }
--          v_ac_h = self->private_impl.f_mcu_blocks_ac_hselector[0u];
--          v_ac_huff_table_fast = &self->private_impl.f_huff_tables_fast[v_ac_h][0u];
--          while (true) {
--            if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
--              v_ret = 2u;
--              goto label__goto_done__break;
--            }
--            v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
--            iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
--            v_n_bits |= 56u;
--            v_ac_ht_fast = ((uint32_t)(v_ac_huff_table_fast[(v_bits >> 56u)]));
--            v_ac_bl = (v_ac_ht_fast >> 8u);
--            if (v_n_bits >= v_ac_bl) {
--              v_ac_symbol = (255u & v_ac_ht_fast);
--              v_bits <<= (v_ac_bl & 63u);
--              v_n_bits -= v_ac_bl;
--            } else {
--              v_ac_code = ((uint32_t)((v_bits >> 55u)));
--              v_ac_blm1 = 8u;
--              v_bits <<= 9u;
--              v_n_bits -= 9u;
--              while (true) {
--                v_ac_ht_slow = self->private_impl.f_huff_tables_slow[v_ac_h][v_ac_blm1];
--                if (v_ac_code < (v_ac_ht_slow >> 8u)) {
--                  v_ac_symbol = ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_ac_h][(255u & ((uint32_t)(v_ac_code + v_ac_ht_slow)))]));
--                  break;
--                }
--                v_ac_code = (((uint32_t)(v_ac_code << 1u)) | ((uint32_t)((v_bits >> 63u))));
--                v_bits <<= 1u;
--                v_n_bits -= 1u;
--                v_ac_blm1 = ((v_ac_blm1 + 1u) & 15u);
--                if (v_ac_blm1 == 0u) {
--                  v_ac_symbol = 0u;
--                  break;
--                }
--              }
--            }
--            v_ac_rrrr = (v_ac_symbol >> 4u);
--            v_ac_ssss = (v_ac_symbol & 15u);
--            v_ac_value = 0u;
--            if (v_ac_ssss > 0u) {
--              v_ac_value = (((uint16_t)(1u)) << self->private_impl.f_scan_al);
--              if ((v_bits >> 63u) == 0u) {
--                v_ac_value = ((uint16_t)(((uint16_t)(65535u)) << self->private_impl.f_scan_al));
--              }
--              v_bits <<= 1u;
--              v_n_bits -= 1u;
--            } else if (v_ac_rrrr < 15u) {
--              self->private_impl.f_eob_run = (((uint16_t)(1u)) << v_ac_rrrr);
--              if (v_ac_rrrr > 0u) {
--                self->private_impl.f_eob_run += ((uint16_t)((v_bits >> (64u - v_ac_rrrr))));
--                v_bits <<= v_ac_rrrr;
--                v_n_bits -= v_ac_rrrr;
--              }
--              goto label__goto_do_eob__break;
--            }
--            while (true) {
--              v_unzig = WUFFS_JPEG__UNZIG[(1u + self->private_impl.f_mcu_zig_index)];
--              if (self->private_data.f_mcu_blocks[0u][v_unzig] != 0u) {
--                if (v_n_bits == 0u) {
--                  if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
--                    v_ret = 2u;
--                    goto label__goto_done__break;
--                  }
--                  v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
--                  iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
--                  v_n_bits |= 56u;
--                }
--                v_bit = ((v_bits >> 63u) > 0u);
--                v_bits <<= 1u;
--                v_n_bits -= 1u;
--                if (v_bit) {
--                  if (self->private_data.f_mcu_blocks[0u][v_unzig] < 32768u) {
--#if defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wconversion"
--#endif
--                    self->private_data.f_mcu_blocks[0u][v_unzig] += v_one_lshift_scan_al;
--#if defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--                  } else {
--#if defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wconversion"
--#endif
--                    self->private_data.f_mcu_blocks[0u][v_unzig] -= v_one_lshift_scan_al;
--#if defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--                  }
--                }
--              } else if (v_ac_rrrr <= 0u) {
--                break;
--              } else {
--                v_ac_rrrr -= 1u;
--              }
--              if (self->private_impl.f_mcu_zig_index >= ((uint32_t)(self->private_impl.f_scan_se))) {
--                break;
--              }
--              self->private_impl.f_mcu_zig_index += 1u;
--            }
--            if (v_ac_value != 0u) {
--              self->private_data.f_mcu_blocks[0u][WUFFS_JPEG__UNZIG[(1u + self->private_impl.f_mcu_zig_index)]] = v_ac_value;
--            }
--            if (self->private_impl.f_mcu_zig_index >= ((uint32_t)(self->private_impl.f_scan_se))) {
--              break;
--            }
--            self->private_impl.f_mcu_zig_index += 1u;
--          }
--          goto label__block__break;
--        }
--        label__goto_do_eob__break:;
--        if (self->private_impl.f_eob_run <= 0u) {
--          v_ret = 2u;
--          goto label__goto_done__break;
--        }
--        while (true) {
--          v_unzig = WUFFS_JPEG__UNZIG[(1u + self->private_impl.f_mcu_zig_index)];
--          if (self->private_data.f_mcu_blocks[0u][v_unzig] != 0u) {
--            if (v_n_bits == 0u) {
--              if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
--                v_ret = 2u;
--                goto label__goto_done__break;
--              }
--              v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
--              iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
--              v_n_bits |= 56u;
--            }
--            v_bit = ((v_bits >> 63u) > 0u);
--            v_bits <<= 1u;
--            v_n_bits -= 1u;
--            if (v_bit) {
--              if (self->private_data.f_mcu_blocks[0u][v_unzig] < 32768u) {
--#if defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wconversion"
--#endif
--                self->private_data.f_mcu_blocks[0u][v_unzig] += v_one_lshift_scan_al;
--#if defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--              } else {
--#if defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wconversion"
--#endif
--                self->private_data.f_mcu_blocks[0u][v_unzig] -= v_one_lshift_scan_al;
--#if defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--              }
--            }
--          }
--          if (self->private_impl.f_mcu_zig_index >= ((uint32_t)(self->private_impl.f_scan_se))) {
--            break;
--          }
--          self->private_impl.f_mcu_zig_index += 1u;
--        }
--#if defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wconversion"
--#endif
--        self->private_impl.f_eob_run -= 1u;
--#if defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--      } while (0);
--      label__block__break:;
--    } while (0);
--    label__goto_done__break:;
--    v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r)))));
--    if (v_pos > self->private_impl.f_bitstream_wi) {
--      v_ret = 2u;
--    } else {
--      self->private_impl.f_bitstream_ri = v_pos;
-+  if (0u == (v_intermediate[1u] |
-+      v_intermediate[2u] |
-+      v_intermediate[3u] |
-+      v_intermediate[4u] |
-+      v_intermediate[5u] |
-+      v_intermediate[6u] |
-+      v_intermediate[7u])) {
-+    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
-+      return wuffs_base__make_empty_struct();
-     }
--    v_r = o_0_v_r;
--    iop_v_r = o_0_iop_v_r;
--    io0_v_r = o_0_io0_v_r;
--    io1_v_r = o_0_io1_v_r;
--    io2_v_r = o_0_io2_v_r;
--  }
--  self->private_impl.f_bitstream_bits = v_bits;
--  self->private_impl.f_bitstream_n_bits = v_n_bits;
--  return v_ret;
--}
--
--// -------- func jpeg.decoder.decode_mcu_progressive_dc_high_bits
--
--WUFFS_BASE__GENERATED_C_CODE
--static uint32_t
--wuffs_jpeg__decoder__decode_mcu_progressive_dc_high_bits(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__slice_u8 a_workbuf,
--    uint32_t a_mx,
--    uint32_t a_my) {
--  uint32_t v_ret = 0;
--  uint64_t v_bits = 0;
--  uint32_t v_n_bits = 0;
--  uint8_t v_csel = 0;
--  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
--  wuffs_base__io_buffer* v_r = &u_r;
--  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint32_t v_pos = 0;
--  uint8_t v_dc_h = 0;
--  uint32_t v_dc_symbol = 0;
--  uint32_t v_dc_ht_fast = 0;
--  uint32_t v_dc_bl = 0;
--  uint32_t v_dc_code = 0;
--  uint32_t v_dc_blm1 = 0;
--  uint32_t v_dc_ht_slow = 0;
--  uint16_t v_dc_value = 0;
--  uint16_t v_dc_extend = 0;
--
--  v_bits = self->private_impl.f_bitstream_bits;
--  v_n_bits = self->private_impl.f_bitstream_n_bits;
--  if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) {
--    return 2u;
--  }
--  {
--    wuffs_base__io_buffer* o_0_v_r = v_r;
--    const uint8_t *o_0_iop_v_r = iop_v_r;
--    const uint8_t *o_0_io0_v_r = io0_v_r;
--    const uint8_t *o_0_io1_v_r = io1_v_r;
--    const uint8_t *o_0_io2_v_r = io2_v_r;
--    v_r = wuffs_base__io_reader__set(
--        &u_r,
--        &iop_v_r,
--        &io0_v_r,
--        &io1_v_r,
--        &io2_v_r,
--        wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
--        self->private_impl.f_bitstream_ri,
--        self->private_impl.f_bitstream_wi),
--        ((uint64_t)(self->private_impl.f_bitstream_ri)));
--    do {
--      while (self->private_impl.f_mcu_current_block < self->private_impl.f_mcu_num_blocks) {
--        if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
--          v_ret = 1u;
--          goto label__goto_done__break;
--        }
--        do {
--          if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
--            v_ret = 2u;
--            goto label__goto_done__break;
--          }
--          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
--          iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
--          v_n_bits |= 56u;
--          v_dc_h = self->private_impl.f_mcu_blocks_dc_hselector[self->private_impl.f_mcu_current_block];
--          v_dc_ht_fast = ((uint32_t)(self->private_impl.f_huff_tables_fast[v_dc_h][(v_bits >> 56u)]));
--          v_dc_bl = (v_dc_ht_fast >> 8u);
--          if (v_n_bits >= v_dc_bl) {
--            v_dc_symbol = (15u & v_dc_ht_fast);
--            v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
--            v_bits <<= (v_dc_bl & 63u);
--            v_n_bits -= v_dc_bl;
--          } else {
--            v_dc_code = ((uint32_t)((v_bits >> 55u)));
--            v_dc_blm1 = 8u;
--            v_bits <<= 9u;
--            v_n_bits -= 9u;
--            while (true) {
--              v_dc_ht_slow = self->private_impl.f_huff_tables_slow[v_dc_h][v_dc_blm1];
--              if (v_dc_code < (v_dc_ht_slow >> 8u)) {
--                v_dc_symbol = (15u & ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_dc_h][(255u & ((uint32_t)(v_dc_code + v_dc_ht_slow)))])));
--                v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
--                break;
--              }
--              v_dc_code = (((uint32_t)(v_dc_code << 1u)) | ((uint32_t)((v_bits >> 63u))));
--              v_bits <<= 1u;
--              v_n_bits -= 1u;
--              v_dc_blm1 = ((v_dc_blm1 + 1u) & 15u);
--              if (v_dc_blm1 == 0u) {
--                v_dc_symbol = 0u;
--                v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
--                break;
--              }
--            }
--          }
--          v_dc_value = ((uint16_t)(((v_bits >> 32u) >> (32u - v_dc_symbol))));
--          v_dc_value += (v_dc_extend & (((uint16_t)(wuffs_base__utility__sign_extend_rshift_u64(v_bits, 63u))) ^ 65535u));
--          v_bits <<= v_dc_symbol;
--          v_n_bits -= v_dc_symbol;
--          v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[self->private_impl.f_mcu_current_block]];
--          self->private_impl.f_mcu_previous_dc_values[v_csel] += v_dc_value;
--          self->private_data.f_mcu_blocks[self->private_impl.f_mcu_current_block][0u] = ((uint16_t)(self->private_impl.f_mcu_previous_dc_values[v_csel] << self->private_impl.f_scan_al));
--        } while (0);
--        self->private_impl.f_mcu_current_block += 1u;
--      }
--      self->private_impl.f_mcu_current_block = 0u;
--    } while (0);
--    label__goto_done__break:;
--    v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r)))));
--    if (v_pos > self->private_impl.f_bitstream_wi) {
--      v_ret = 2u;
--    } else {
--      self->private_impl.f_bitstream_ri = v_pos;
-+    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[0u] + 16u)) >> 5u) & 1023u)];
-+    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-+  } else {
-+    v_in2 = v_intermediate[2u];
-+    v_in6 = v_intermediate[6u];
-+    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
-+    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
-+    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
-+    v_in0 = v_intermediate[0u];
-+    v_in4 = v_intermediate[4u];
-+    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
-+    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
-+    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
-+    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
-+    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
-+    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
-+    v_in1 = v_intermediate[1u];
-+    v_in3 = v_intermediate[3u];
-+    v_in5 = v_intermediate[5u];
-+    v_in7 = v_intermediate[7u];
-+    v_ri51 = ((uint32_t)(v_in5 + v_in1));
-+    v_ri53 = ((uint32_t)(v_in5 + v_in3));
-+    v_ri71 = ((uint32_t)(v_in7 + v_in1));
-+    v_ri73 = ((uint32_t)(v_in7 + v_in3));
-+    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
-+    v_rk1 = ((uint32_t)(v_in1 * 12299u));
-+    v_rk3 = ((uint32_t)(v_in3 * 25172u));
-+    v_rk5 = ((uint32_t)(v_in5 * 16819u));
-+    v_rk7 = ((uint32_t)(v_in7 * 2446u));
-+    v_ri51 *= 4294964100u;
-+    v_ri53 *= 4294946301u;
-+    v_ri71 *= 4294959923u;
-+    v_ri73 *= 4294951227u;
-+    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
-+    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
-+    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
-+    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
-+    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
-+    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
-+    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
-+      return wuffs_base__make_empty_struct();
-     }
--    v_r = o_0_v_r;
--    iop_v_r = o_0_iop_v_r;
--    io0_v_r = o_0_io0_v_r;
--    io1_v_r = o_0_io1_v_r;
--    io2_v_r = o_0_io2_v_r;
--  }
--  self->private_impl.f_bitstream_bits = v_bits;
--  self->private_impl.f_bitstream_n_bits = v_n_bits;
--  return v_ret;
--}
--
--// -------- func jpeg.decoder.decode_mcu_progressive_dc_low_bit
--
--WUFFS_BASE__GENERATED_C_CODE
--static uint32_t
--wuffs_jpeg__decoder__decode_mcu_progressive_dc_low_bit(
--    wuffs_jpeg__decoder* self,
--    wuffs_base__slice_u8 a_workbuf,
--    uint32_t a_mx,
--    uint32_t a_my) {
--  uint32_t v_ret = 0;
--  uint64_t v_bits = 0;
--  uint32_t v_n_bits = 0;
--  uint16_t v_one_lshift_scan_al = 0;
--  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
--  wuffs_base__io_buffer* v_r = &u_r;
--  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint32_t v_pos = 0;
--
--  v_bits = self->private_impl.f_bitstream_bits;
--  v_n_bits = self->private_impl.f_bitstream_n_bits;
--  v_one_lshift_scan_al = (((uint16_t)(1u)) << self->private_impl.f_scan_al);
--  if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) {
--    return 2u;
-+    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-   }
--  {
--    wuffs_base__io_buffer* o_0_v_r = v_r;
--    const uint8_t *o_0_iop_v_r = iop_v_r;
--    const uint8_t *o_0_io0_v_r = io0_v_r;
--    const uint8_t *o_0_io1_v_r = io1_v_r;
--    const uint8_t *o_0_io2_v_r = io2_v_r;
--    v_r = wuffs_base__io_reader__set(
--        &u_r,
--        &iop_v_r,
--        &io0_v_r,
--        &io1_v_r,
--        &io2_v_r,
--        wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
--        self->private_impl.f_bitstream_ri,
--        self->private_impl.f_bitstream_wi),
--        ((uint64_t)(self->private_impl.f_bitstream_ri)));
--    do {
--      while (self->private_impl.f_mcu_current_block < self->private_impl.f_mcu_num_blocks) {
--        if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
--          v_ret = 1u;
--          goto label__goto_done__break;
--        }
--        do {
--          if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
--            v_ret = 2u;
--            goto label__goto_done__break;
--          }
--          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
--          iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
--          v_n_bits |= 56u;
--          if ((v_bits >> 63u) != 0u) {
--            self->private_data.f_mcu_blocks[self->private_impl.f_mcu_current_block][0u] |= v_one_lshift_scan_al;
--          }
--          v_bits <<= 1u;
--          v_n_bits -= 1u;
--        } while (0);
--        self->private_impl.f_mcu_current_block += 1u;
--      }
--      self->private_impl.f_mcu_current_block = 0u;
--    } while (0);
--    label__goto_done__break:;
--    v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r)))));
--    if (v_pos > self->private_impl.f_bitstream_wi) {
--      v_ret = 2u;
--    } else {
--      self->private_impl.f_bitstream_ri = v_pos;
-+  if (0u == (v_intermediate[9u] |
-+      v_intermediate[10u] |
-+      v_intermediate[11u] |
-+      v_intermediate[12u] |
-+      v_intermediate[13u] |
-+      v_intermediate[14u] |
-+      v_intermediate[15u])) {
-+    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
-+      return wuffs_base__make_empty_struct();
-     }
--    v_r = o_0_v_r;
--    iop_v_r = o_0_iop_v_r;
--    io0_v_r = o_0_io0_v_r;
--    io1_v_r = o_0_io1_v_r;
--    io2_v_r = o_0_io2_v_r;
--  }
--  self->private_impl.f_bitstream_bits = v_bits;
--  self->private_impl.f_bitstream_n_bits = v_n_bits;
--  return v_ret;
--}
--
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JPEG)
--
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JSON)
--
--// ---------------- Status Codes Implementations
--
--const char wuffs_json__error__bad_c0_control_code[] = "#json: bad C0 control code";
--const char wuffs_json__error__bad_utf_8[] = "#json: bad UTF-8";
--const char wuffs_json__error__bad_backslash_escape[] = "#json: bad backslash-escape";
--const char wuffs_json__error__bad_input[] = "#json: bad input";
--const char wuffs_json__error__bad_new_line_in_a_string[] = "#json: bad new-line in a string";
--const char wuffs_json__error__bad_quirk_combination[] = "#json: bad quirk combination";
--const char wuffs_json__error__unsupported_number_length[] = "#json: unsupported number length";
--const char wuffs_json__error__unsupported_recursion_depth[] = "#json: unsupported recursion depth";
--const char wuffs_json__error__internal_error_inconsistent_i_o[] = "#json: internal error: inconsistent I/O";
--
--// ---------------- Private Consts
--
--#define WUFFS_JSON__DECODER_NUMBER_LENGTH_MAX_INCL 99
--
--static const uint8_t
--WUFFS_JSON__LUT_BACKSLASHES[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 3, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 162, 0, 0, 0, 0, 5,
--  0, 0, 0, 0, 0, 0, 0, 175,
--  7, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 4,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 220, 0, 0, 0,
--  0, 1, 136, 0, 0, 2, 140, 0,
--  0, 0, 0, 0, 0, 0, 138, 0,
--  0, 0, 141, 0, 137, 0, 6, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--};
--
--static const uint8_t
--WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_QUIRKS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  0, 1, 3, 4, 5, 6, 7, 10,
--};
--
--static const uint8_t
--WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_CHARS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  0, 7, 27, 10, 63, 39, 11, 0,
--};
--
--static const uint8_t
--WUFFS_JSON__LUT_CHARS[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  128, 129, 130, 131, 132, 133, 134, 135,
--  136, 137, 138, 139, 140, 141, 142, 143,
--  144, 145, 146, 147, 148, 149, 150, 151,
--  152, 153, 154, 155, 156, 157, 158, 159,
--  0, 0, 1, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 2, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  16, 16, 16, 16, 16, 16, 16, 16,
--  16, 16, 16, 16, 16, 16, 16, 16,
--  16, 16, 16, 16, 16, 16, 16, 16,
--  16, 16, 16, 16, 16, 16, 16, 16,
--  16, 16, 16, 16, 16, 16, 16, 16,
--  16, 16, 16, 16, 16, 16, 16, 16,
--  16, 16, 16, 16, 16, 16, 16, 16,
--  16, 16, 16, 16, 16, 16, 16, 16,
--  32, 32, 3, 3, 3, 3, 3, 3,
--  3, 3, 3, 3, 3, 3, 3, 3,
--  3, 3, 3, 3, 3, 3, 3, 3,
--  3, 3, 3, 3, 3, 3, 3, 3,
--  4, 4, 4, 4, 4, 4, 4, 4,
--  4, 4, 4, 4, 4, 4, 4, 4,
--  5, 5, 5, 5, 5, 32, 32, 32,
--  32, 32, 32, 32, 32, 32, 32, 32,
--};
--
--#define WUFFS_JSON__CLASS_WHITESPACE 0
--
--#define WUFFS_JSON__CLASS_STRING 1
--
--#define WUFFS_JSON__CLASS_COMMA 2
--
--#define WUFFS_JSON__CLASS_COLON 3
--
--#define WUFFS_JSON__CLASS_NUMBER 4
--
--#define WUFFS_JSON__CLASS_OPEN_CURLY_BRACE 5
--
--#define WUFFS_JSON__CLASS_CLOSE_CURLY_BRACE 6
--
--#define WUFFS_JSON__CLASS_OPEN_SQUARE_BRACKET 7
--
--#define WUFFS_JSON__CLASS_CLOSE_SQUARE_BRACKET 8
--
--#define WUFFS_JSON__CLASS_FALSE 9
--
--#define WUFFS_JSON__CLASS_TRUE 10
--
--#define WUFFS_JSON__CLASS_NULL_NAN_INF 11
--
--#define WUFFS_JSON__CLASS_COMMENT 12
--
--#define WUFFS_JSON__EXPECT_VALUE 7858
--
--#define WUFFS_JSON__EXPECT_NON_STRING_VALUE 7856
--
--#define WUFFS_JSON__EXPECT_STRING 4098
--
--#define WUFFS_JSON__EXPECT_COMMA 4100
--
--#define WUFFS_JSON__EXPECT_COLON 4104
--
--#define WUFFS_JSON__EXPECT_NUMBER 4112
--
--#define WUFFS_JSON__EXPECT_CLOSE_CURLY_BRACE 4160
--
--#define WUFFS_JSON__EXPECT_CLOSE_SQUARE_BRACKET 4352
--
--static const uint8_t
--WUFFS_JSON__LUT_CLASSES[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  15, 15, 15, 15, 15, 15, 15, 15,
--  15, 0, 0, 15, 15, 0, 15, 15,
--  15, 15, 15, 15, 15, 15, 15, 15,
--  15, 15, 15, 15, 15, 15, 15, 15,
--  0, 15, 1, 15, 15, 15, 15, 15,
--  15, 15, 15, 11, 2, 4, 15, 12,
--  4, 4, 4, 4, 4, 4, 4, 4,
--  4, 4, 3, 15, 15, 15, 15, 15,
--  15, 15, 15, 15, 15, 15, 15, 15,
--  15, 11, 15, 15, 15, 15, 11, 15,
--  15, 15, 15, 15, 15, 15, 15, 15,
--  15, 15, 15, 7, 15, 8, 15, 15,
--  15, 15, 15, 15, 15, 15, 9, 15,
--  15, 11, 15, 15, 15, 15, 11, 15,
--  15, 15, 15, 15, 10, 15, 15, 15,
--  15, 15, 15, 5, 15, 6, 15, 15,
--  15, 15, 15, 15, 15, 15, 15, 15,
--  15, 15, 15, 15, 15, 15, 15, 15,
--  15, 15, 15, 15, 15, 15, 15, 15,
--  15, 15, 15, 15, 15, 15, 15, 15,
--  15, 15, 15, 15, 15, 15, 15, 15,
--  15, 15, 15, 15, 15, 15, 15, 15,
--  15, 15, 15, 15, 15, 15, 15, 15,
--  15, 15, 15, 15, 15, 15, 15, 15,
--  15, 15, 15, 15, 15, 15, 15, 15,
--  15, 15, 15, 15, 15, 15, 15, 15,
--  15, 15, 15, 15, 15, 15, 15, 15,
--  15, 15, 15, 15, 15, 15, 15, 15,
--  15, 15, 15, 15, 15, 15, 15, 15,
--  15, 15, 15, 15, 15, 15, 15, 15,
--  15, 15, 15, 15, 15, 15, 15, 15,
--  15, 15, 15, 15, 15, 15, 15, 15,
--};
--
--static const uint8_t
--WUFFS_JSON__LUT_DECIMAL_DIGITS[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  128, 129, 130, 131, 132, 133, 134, 135,
--  136, 137, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--};
--
--static const uint8_t
--WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  128, 129, 130, 131, 132, 133, 134, 135,
--  136, 137, 0, 0, 0, 0, 0, 0,
--  0, 138, 139, 140, 141, 142, 143, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 138, 139, 140, 141, 142, 143, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--};
--
--#define WUFFS_JSON__QUIRKS_BASE 1225364480
--
--#define WUFFS_JSON__QUIRKS_COUNT 21
--
--// ---------------- Private Initializer Prototypes
--
--// ---------------- Private Function Prototypes
--
--WUFFS_BASE__GENERATED_C_CODE
--static uint32_t
--wuffs_json__decoder__decode_number(
--    wuffs_json__decoder* self,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static uint32_t
--wuffs_json__decoder__decode_digits(
--    wuffs_json__decoder* self,
--    wuffs_base__io_buffer* a_src,
--    uint32_t a_n);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_json__decoder__decode_leading(
--    wuffs_json__decoder* self,
--    wuffs_base__token_buffer* a_dst,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_json__decoder__decode_comment(
--    wuffs_json__decoder* self,
--    wuffs_base__token_buffer* a_dst,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_json__decoder__decode_inf_nan(
--    wuffs_json__decoder* self,
--    wuffs_base__token_buffer* a_dst,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_json__decoder__decode_trailer(
--    wuffs_json__decoder* self,
--    wuffs_base__token_buffer* a_dst,
--    wuffs_base__io_buffer* a_src);
--
--// ---------------- VTables
--
--const wuffs_base__token_decoder__func_ptrs
--wuffs_json__decoder__func_ptrs_for__wuffs_base__token_decoder = {
--  (wuffs_base__status(*)(void*,
--      wuffs_base__token_buffer*,
--      wuffs_base__io_buffer*,
--      wuffs_base__slice_u8))(&wuffs_json__decoder__decode_tokens),
--  (uint64_t(*)(const void*,
--      uint32_t))(&wuffs_json__decoder__get_quirk),
--  (uint64_t(*)(const void*))(&wuffs_json__decoder__history_retain_length),
--  (wuffs_base__status(*)(void*,
--      uint32_t,
--      uint64_t))(&wuffs_json__decoder__set_quirk),
--  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_json__decoder__workbuf_len),
--};
--
--// ---------------- Initializer Implementations
--
--wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_json__decoder__initialize(
--    wuffs_json__decoder* self,
--    size_t sizeof_star_self,
--    uint64_t wuffs_version,
--    uint32_t options){
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (sizeof(*self) != sizeof_star_self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
--  }
--  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
--      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
--    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[8u] + 16u)) >> 5u) & 1023u)];
-+    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-+  } else {
-+    v_in2 = v_intermediate[10u];
-+    v_in6 = v_intermediate[14u];
-+    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
-+    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
-+    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
-+    v_in0 = v_intermediate[8u];
-+    v_in4 = v_intermediate[12u];
-+    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
-+    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
-+    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
-+    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
-+    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
-+    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
-+    v_in1 = v_intermediate[9u];
-+    v_in3 = v_intermediate[11u];
-+    v_in5 = v_intermediate[13u];
-+    v_in7 = v_intermediate[15u];
-+    v_ri51 = ((uint32_t)(v_in5 + v_in1));
-+    v_ri53 = ((uint32_t)(v_in5 + v_in3));
-+    v_ri71 = ((uint32_t)(v_in7 + v_in1));
-+    v_ri73 = ((uint32_t)(v_in7 + v_in3));
-+    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
-+    v_rk1 = ((uint32_t)(v_in1 * 12299u));
-+    v_rk3 = ((uint32_t)(v_in3 * 25172u));
-+    v_rk5 = ((uint32_t)(v_in5 * 16819u));
-+    v_rk7 = ((uint32_t)(v_in7 * 2446u));
-+    v_ri51 *= 4294964100u;
-+    v_ri53 *= 4294946301u;
-+    v_ri71 *= 4294959923u;
-+    v_ri73 *= 4294951227u;
-+    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
-+    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
-+    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
-+    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
-+    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
-+    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
-+    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
-+      return wuffs_base__make_empty_struct();
-+    }
-+    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-   }
--
--  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
--    // The whole point of this if-check is to detect an uninitialized *self.
--    // We disable the warning on GCC. Clang-5.0 does not have this warning.
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
--#endif
--    if (self->private_impl.magic != 0) {
--      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+  if (0u == (v_intermediate[17u] |
-+      v_intermediate[18u] |
-+      v_intermediate[19u] |
-+      v_intermediate[20u] |
-+      v_intermediate[21u] |
-+      v_intermediate[22u] |
-+      v_intermediate[23u])) {
-+    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
-+      return wuffs_base__make_empty_struct();
-     }
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
-+    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[16u] + 16u)) >> 5u) & 1023u)];
-+    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-   } else {
--    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
--      memset(self, 0, sizeof(*self));
--      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
--    } else {
--      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+    v_in2 = v_intermediate[18u];
-+    v_in6 = v_intermediate[22u];
-+    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
-+    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
-+    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
-+    v_in0 = v_intermediate[16u];
-+    v_in4 = v_intermediate[20u];
-+    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
-+    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
-+    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
-+    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
-+    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
-+    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
-+    v_in1 = v_intermediate[17u];
-+    v_in3 = v_intermediate[19u];
-+    v_in5 = v_intermediate[21u];
-+    v_in7 = v_intermediate[23u];
-+    v_ri51 = ((uint32_t)(v_in5 + v_in1));
-+    v_ri53 = ((uint32_t)(v_in5 + v_in3));
-+    v_ri71 = ((uint32_t)(v_in7 + v_in1));
-+    v_ri73 = ((uint32_t)(v_in7 + v_in3));
-+    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
-+    v_rk1 = ((uint32_t)(v_in1 * 12299u));
-+    v_rk3 = ((uint32_t)(v_in3 * 25172u));
-+    v_rk5 = ((uint32_t)(v_in5 * 16819u));
-+    v_rk7 = ((uint32_t)(v_in7 * 2446u));
-+    v_ri51 *= 4294964100u;
-+    v_ri53 *= 4294946301u;
-+    v_ri71 *= 4294959923u;
-+    v_ri73 *= 4294951227u;
-+    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
-+    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
-+    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
-+    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
-+    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
-+    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
-+    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
-+      return wuffs_base__make_empty_struct();
-     }
-+    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-   }
--
--  self->private_impl.magic = WUFFS_BASE__MAGIC;
--  self->private_impl.vtable_for__wuffs_base__token_decoder.vtable_name =
--      wuffs_base__token_decoder__vtable_name;
--  self->private_impl.vtable_for__wuffs_base__token_decoder.function_pointers =
--      (const void*)(&wuffs_json__decoder__func_ptrs_for__wuffs_base__token_decoder);
--  return wuffs_base__make_status(NULL);
--}
--
--wuffs_json__decoder*
--wuffs_json__decoder__alloc(void) {
--  wuffs_json__decoder* x =
--      (wuffs_json__decoder*)(calloc(sizeof(wuffs_json__decoder), 1));
--  if (!x) {
--    return NULL;
--  }
--  if (wuffs_json__decoder__initialize(
--      x, sizeof(wuffs_json__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
--    free(x);
--    return NULL;
--  }
--  return x;
--}
--
--size_t
--sizeof__wuffs_json__decoder(void) {
--  return sizeof(wuffs_json__decoder);
--}
--
--// ---------------- Function Implementations
--
--// -------- func json.decoder.get_quirk
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_json__decoder__get_quirk(
--    const wuffs_json__decoder* self,
--    uint32_t a_key) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
--
--  uint32_t v_key = 0;
--
--  if (a_key >= 1225364480u) {
--    v_key = (a_key - 1225364480u);
--    if (v_key < 21u) {
--      if (self->private_impl.f_quirks[v_key]) {
--        return 1u;
--      }
-+  if (0u == (v_intermediate[25u] |
-+      v_intermediate[26u] |
-+      v_intermediate[27u] |
-+      v_intermediate[28u] |
-+      v_intermediate[29u] |
-+      v_intermediate[30u] |
-+      v_intermediate[31u])) {
-+    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
-+      return wuffs_base__make_empty_struct();
-     }
--  }
--  return 0u;
--}
--
--// -------- func json.decoder.set_quirk
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_json__decoder__set_quirk(
--    wuffs_json__decoder* self,
--    uint32_t a_key,
--    uint64_t a_value) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--
--  if (a_key >= 1225364480u) {
--    a_key -= 1225364480u;
--    if (a_key < 21u) {
--      self->private_impl.f_quirks[a_key] = (a_value > 0u);
--      return wuffs_base__make_status(NULL);
-+    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[24u] + 16u)) >> 5u) & 1023u)];
-+    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-+  } else {
-+    v_in2 = v_intermediate[26u];
-+    v_in6 = v_intermediate[30u];
-+    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
-+    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
-+    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
-+    v_in0 = v_intermediate[24u];
-+    v_in4 = v_intermediate[28u];
-+    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
-+    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
-+    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
-+    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
-+    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
-+    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
-+    v_in1 = v_intermediate[25u];
-+    v_in3 = v_intermediate[27u];
-+    v_in5 = v_intermediate[29u];
-+    v_in7 = v_intermediate[31u];
-+    v_ri51 = ((uint32_t)(v_in5 + v_in1));
-+    v_ri53 = ((uint32_t)(v_in5 + v_in3));
-+    v_ri71 = ((uint32_t)(v_in7 + v_in1));
-+    v_ri73 = ((uint32_t)(v_in7 + v_in3));
-+    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
-+    v_rk1 = ((uint32_t)(v_in1 * 12299u));
-+    v_rk3 = ((uint32_t)(v_in3 * 25172u));
-+    v_rk5 = ((uint32_t)(v_in5 * 16819u));
-+    v_rk7 = ((uint32_t)(v_in7 * 2446u));
-+    v_ri51 *= 4294964100u;
-+    v_ri53 *= 4294946301u;
-+    v_ri71 *= 4294959923u;
-+    v_ri73 *= 4294951227u;
-+    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
-+    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
-+    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
-+    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
-+    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
-+    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
-+    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
-+      return wuffs_base__make_empty_struct();
-     }
-+    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-   }
--  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
--}
--
--// -------- func json.decoder.history_retain_length
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_json__decoder__history_retain_length(
--    const wuffs_json__decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
-+  if (0u == (v_intermediate[33u] |
-+      v_intermediate[34u] |
-+      v_intermediate[35u] |
-+      v_intermediate[36u] |
-+      v_intermediate[37u] |
-+      v_intermediate[38u] |
-+      v_intermediate[39u])) {
-+    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
-+      return wuffs_base__make_empty_struct();
-+    }
-+    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[32u] + 16u)) >> 5u) & 1023u)];
-+    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-+  } else {
-+    v_in2 = v_intermediate[34u];
-+    v_in6 = v_intermediate[38u];
-+    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
-+    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
-+    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
-+    v_in0 = v_intermediate[32u];
-+    v_in4 = v_intermediate[36u];
-+    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
-+    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
-+    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
-+    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
-+    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
-+    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
-+    v_in1 = v_intermediate[33u];
-+    v_in3 = v_intermediate[35u];
-+    v_in5 = v_intermediate[37u];
-+    v_in7 = v_intermediate[39u];
-+    v_ri51 = ((uint32_t)(v_in5 + v_in1));
-+    v_ri53 = ((uint32_t)(v_in5 + v_in3));
-+    v_ri71 = ((uint32_t)(v_in7 + v_in1));
-+    v_ri73 = ((uint32_t)(v_in7 + v_in3));
-+    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
-+    v_rk1 = ((uint32_t)(v_in1 * 12299u));
-+    v_rk3 = ((uint32_t)(v_in3 * 25172u));
-+    v_rk5 = ((uint32_t)(v_in5 * 16819u));
-+    v_rk7 = ((uint32_t)(v_in7 * 2446u));
-+    v_ri51 *= 4294964100u;
-+    v_ri53 *= 4294946301u;
-+    v_ri71 *= 4294959923u;
-+    v_ri73 *= 4294951227u;
-+    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
-+    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
-+    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
-+    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
-+    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
-+    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
-+    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
-+      return wuffs_base__make_empty_struct();
-+    }
-+    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-   }
--
--  return 0u;
--}
--
--// -------- func json.decoder.workbuf_len
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_json__decoder__workbuf_len(
--    const wuffs_json__decoder* self) {
--  if (!self) {
--    return wuffs_base__utility__empty_range_ii_u64();
-+  if (0u == (v_intermediate[41u] |
-+      v_intermediate[42u] |
-+      v_intermediate[43u] |
-+      v_intermediate[44u] |
-+      v_intermediate[45u] |
-+      v_intermediate[46u] |
-+      v_intermediate[47u])) {
-+    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
-+      return wuffs_base__make_empty_struct();
-+    }
-+    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[40u] + 16u)) >> 5u) & 1023u)];
-+    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-+  } else {
-+    v_in2 = v_intermediate[42u];
-+    v_in6 = v_intermediate[46u];
-+    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
-+    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
-+    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
-+    v_in0 = v_intermediate[40u];
-+    v_in4 = v_intermediate[44u];
-+    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
-+    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
-+    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
-+    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
-+    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
-+    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
-+    v_in1 = v_intermediate[41u];
-+    v_in3 = v_intermediate[43u];
-+    v_in5 = v_intermediate[45u];
-+    v_in7 = v_intermediate[47u];
-+    v_ri51 = ((uint32_t)(v_in5 + v_in1));
-+    v_ri53 = ((uint32_t)(v_in5 + v_in3));
-+    v_ri71 = ((uint32_t)(v_in7 + v_in1));
-+    v_ri73 = ((uint32_t)(v_in7 + v_in3));
-+    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
-+    v_rk1 = ((uint32_t)(v_in1 * 12299u));
-+    v_rk3 = ((uint32_t)(v_in3 * 25172u));
-+    v_rk5 = ((uint32_t)(v_in5 * 16819u));
-+    v_rk7 = ((uint32_t)(v_in7 * 2446u));
-+    v_ri51 *= 4294964100u;
-+    v_ri53 *= 4294946301u;
-+    v_ri71 *= 4294959923u;
-+    v_ri73 *= 4294951227u;
-+    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
-+    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
-+    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
-+    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
-+    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
-+    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
-+    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
-+      return wuffs_base__make_empty_struct();
-+    }
-+    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-   }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_range_ii_u64();
-+  if (0u == (v_intermediate[49u] |
-+      v_intermediate[50u] |
-+      v_intermediate[51u] |
-+      v_intermediate[52u] |
-+      v_intermediate[53u] |
-+      v_intermediate[54u] |
-+      v_intermediate[55u])) {
-+    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
-+      return wuffs_base__make_empty_struct();
-+    }
-+    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[48u] + 16u)) >> 5u) & 1023u)];
-+    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-+  } else {
-+    v_in2 = v_intermediate[50u];
-+    v_in6 = v_intermediate[54u];
-+    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
-+    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
-+    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
-+    v_in0 = v_intermediate[48u];
-+    v_in4 = v_intermediate[52u];
-+    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
-+    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
-+    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
-+    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
-+    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
-+    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
-+    v_in1 = v_intermediate[49u];
-+    v_in3 = v_intermediate[51u];
-+    v_in5 = v_intermediate[53u];
-+    v_in7 = v_intermediate[55u];
-+    v_ri51 = ((uint32_t)(v_in5 + v_in1));
-+    v_ri53 = ((uint32_t)(v_in5 + v_in3));
-+    v_ri71 = ((uint32_t)(v_in7 + v_in1));
-+    v_ri73 = ((uint32_t)(v_in7 + v_in3));
-+    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
-+    v_rk1 = ((uint32_t)(v_in1 * 12299u));
-+    v_rk3 = ((uint32_t)(v_in3 * 25172u));
-+    v_rk5 = ((uint32_t)(v_in5 * 16819u));
-+    v_rk7 = ((uint32_t)(v_in7 * 2446u));
-+    v_ri51 *= 4294964100u;
-+    v_ri53 *= 4294946301u;
-+    v_ri71 *= 4294959923u;
-+    v_ri73 *= 4294951227u;
-+    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
-+    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
-+    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
-+    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
-+    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
-+    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
-+    if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
-+      return wuffs_base__make_empty_struct();
-+    }
-+    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-   }
--
--  return wuffs_base__utility__empty_range_ii_u64();
-+  if (0u == (v_intermediate[57u] |
-+      v_intermediate[58u] |
-+      v_intermediate[59u] |
-+      v_intermediate[60u] |
-+      v_intermediate[61u] |
-+      v_intermediate[62u] |
-+      v_intermediate[63u])) {
-+    if (8u > ((uint64_t)(a_dst_buffer.len))) {
-+      return wuffs_base__make_empty_struct();
-+    }
-+    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(v_intermediate[56u] + 16u)) >> 5u) & 1023u)];
-+    a_dst_buffer.ptr[1u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[2u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[3u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[4u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[5u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[6u] = a_dst_buffer.ptr[0u];
-+    a_dst_buffer.ptr[7u] = a_dst_buffer.ptr[0u];
-+  } else {
-+    v_in2 = v_intermediate[58u];
-+    v_in6 = v_intermediate[62u];
-+    v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433u));
-+    v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270u))));
-+    v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137u))));
-+    v_in0 = v_intermediate[56u];
-+    v_in4 = v_intermediate[60u];
-+    v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13u));
-+    v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13u));
-+    v_rd0 = ((uint32_t)(v_rcp + v_rb2));
-+    v_rd1 = ((uint32_t)(v_rcm + v_rb6));
-+    v_rd2 = ((uint32_t)(v_rcm - v_rb6));
-+    v_rd3 = ((uint32_t)(v_rcp - v_rb2));
-+    v_in1 = v_intermediate[57u];
-+    v_in3 = v_intermediate[59u];
-+    v_in5 = v_intermediate[61u];
-+    v_in7 = v_intermediate[63u];
-+    v_ri51 = ((uint32_t)(v_in5 + v_in1));
-+    v_ri53 = ((uint32_t)(v_in5 + v_in3));
-+    v_ri71 = ((uint32_t)(v_in7 + v_in1));
-+    v_ri73 = ((uint32_t)(v_in7 + v_in3));
-+    v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633u));
-+    v_rk1 = ((uint32_t)(v_in1 * 12299u));
-+    v_rk3 = ((uint32_t)(v_in3 * 25172u));
-+    v_rk5 = ((uint32_t)(v_in5 * 16819u));
-+    v_rk7 = ((uint32_t)(v_in7 * 2446u));
-+    v_ri51 *= 4294964100u;
-+    v_ri53 *= 4294946301u;
-+    v_ri71 *= 4294959923u;
-+    v_ri73 *= 4294951227u;
-+    v_rl51 = ((uint32_t)(v_ri51 + v_rj));
-+    v_rl73 = ((uint32_t)(v_ri73 + v_rj));
-+    v_rk1 += ((uint32_t)(v_ri71 + v_rl51));
-+    v_rk3 += ((uint32_t)(v_ri53 + v_rl73));
-+    v_rk5 += ((uint32_t)(v_ri53 + v_rl51));
-+    v_rk7 += ((uint32_t)(v_ri71 + v_rl73));
-+    if (8u > ((uint64_t)(a_dst_buffer.len))) {
-+      return wuffs_base__make_empty_struct();
-+    }
-+    a_dst_buffer.ptr[0u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[7u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[1u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[6u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[2u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[5u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[3u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072u)) >> 18u) & 1023u)];
-+    a_dst_buffer.ptr[4u] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072u)) >> 18u) & 1023u)];
-+  }
-+  return wuffs_base__make_empty_struct();
- }
- 
--// -------- func json.decoder.decode_tokens
-+// ‼ WUFFS MULTI-FILE SECTION +x86_avx2
-+// -------- func jpeg.decoder.decode_idct_x86_avx2
- 
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
-+WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_json__decoder__decode_tokens(
--    wuffs_json__decoder* self,
--    wuffs_base__token_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__slice_u8 a_workbuf) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--  if (!a_dst || !a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 1)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
--  }
--  self->private_impl.active_coroutine = 0;
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  uint32_t v_vminor = 0;
--  uint32_t v_number_length = 0;
--  uint32_t v_number_status = 0;
--  uint32_t v_string_length = 0;
--  uint32_t v_whitespace_length = 0;
--  uint32_t v_depth = 0;
--  uint32_t v_stack_byte = 0;
--  uint32_t v_stack_bit = 0;
--  uint32_t v_match = 0;
--  uint32_t v_c4 = 0;
--  uint8_t v_c = 0;
--  uint8_t v_backslash = 0;
--  uint8_t v_char = 0;
--  uint8_t v_class = 0;
--  uint32_t v_multi_byte_utf8 = 0;
--  uint8_t v_backslash_x_ok = 0;
--  uint8_t v_backslash_x_value = 0;
--  uint32_t v_backslash_x_string = 0;
--  uint8_t v_uni4_ok = 0;
--  uint64_t v_uni4_string = 0;
--  uint32_t v_uni4_value = 0;
--  uint32_t v_uni4_high_surrogate = 0;
--  uint8_t v_uni8_ok = 0;
--  uint64_t v_uni8_string = 0;
--  uint32_t v_uni8_value = 0;
--  uint32_t v_expect = 0;
--  uint32_t v_expect_after_value = 0;
--
--  wuffs_base__token* iop_a_dst = NULL;
--  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_dst && a_dst->data.ptr) {
--    io0_a_dst = a_dst->data.ptr;
--    io1_a_dst = io0_a_dst + a_dst->meta.wi;
--    iop_a_dst = io1_a_dst;
--    io2_a_dst = io0_a_dst + a_dst->data.len;
--    if (a_dst->meta.closed) {
--      io2_a_dst = iop_a_dst;
--    }
--  }
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
-+static wuffs_base__empty_struct
-+wuffs_jpeg__decoder__decode_idct_x86_avx2(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__slice_u8 a_dst_buffer,
-+    uint64_t a_dst_stride,
-+    uint32_t a_q) {
-+  __m256i v_k_0000 = {0};
-+  __m256i v_k_8080 = {0};
-+  __m256i v_k_0000_0002 = {0};
-+  __m256i v_k_0001_FFFF = {0};
-+  __m256i v_k_0400_0000 = {0};
-+  __m256i v_k_29CF_1151_D630_1151 = {0};
-+  __m256i v_k_E333_133E_ADFD_1051 = {0};
-+  __m256i v_k_E6DC_25A1_1925_25A1 = {0};
-+  __m256i v_k_ECC1_E333_EFB0_ADFD = {0};
-+  __m128i v_az_coeffs = {0};
-+  __m256i v_az_ah00 = {0};
-+  __m256i v_az_ad00 = {0};
-+  __m256i v_az_eh00 = {0};
-+  __m256i v_az_adeh = {0};
-+  __m256i v_rows01 = {0};
-+  __m256i v_rows23 = {0};
-+  __m256i v_rows45 = {0};
-+  __m256i v_rows67 = {0};
-+  __m256i v_quants01 = {0};
-+  __m256i v_quants23 = {0};
-+  __m256i v_quants45 = {0};
-+  __m256i v_quants67 = {0};
-+  __m256i v_rows04 = {0};
-+  __m256i v_rows31 = {0};
-+  __m256i v_rows26 = {0};
-+  __m256i v_rows75 = {0};
-+  __m256i v_fp_rows62 = {0};
-+  __m256i v_fp_bq2662ad = {0};
-+  __m256i v_fp_bq2662eh = {0};
-+  __m256i v_fp_cb26ad = {0};
-+  __m256i v_fp_cb26eh = {0};
-+  __m256i v_fp_rows40pos = {0};
-+  __m256i v_fp_rows04neg = {0};
-+  __m256i v_fp_rows0pm4 = {0};
-+  __m256i v_fp_ccpmad = {0};
-+  __m256i v_fp_ccpmeh = {0};
-+  __m256i v_fp_cd01ad = {0};
-+  __m256i v_fp_cd01eh = {0};
-+  __m256i v_fp_cd32ad = {0};
-+  __m256i v_fp_cd32eh = {0};
-+  __m256i v_fp_sums7351 = {0};
-+  __m256i v_fp_sums5173 = {0};
-+  __m256i v_fp_ci73515173ad = {0};
-+  __m256i v_fp_ci73515173eh = {0};
-+  __m256i v_fp_cl7351ad = {0};
-+  __m256i v_fp_cl7351eh = {0};
-+  __m256i v_fp_rows13 = {0};
-+  __m256i v_fp_bq7153ad = {0};
-+  __m256i v_fp_bq7153eh = {0};
-+  __m256i v_fp_ck75ad = {0};
-+  __m256i v_fp_ck75eh = {0};
-+  __m256i v_fp_cl5173ad = {0};
-+  __m256i v_fp_cl5173eh = {0};
-+  __m256i v_fp_ck13ad = {0};
-+  __m256i v_fp_ck13eh = {0};
-+  __m256i v_intermediate01ad = {0};
-+  __m256i v_intermediate01eh = {0};
-+  __m256i v_intermediate01 = {0};
-+  __m256i v_intermediate32ad = {0};
-+  __m256i v_intermediate32eh = {0};
-+  __m256i v_intermediate32 = {0};
-+  __m256i v_intermediate45ad = {0};
-+  __m256i v_intermediate45eh = {0};
-+  __m256i v_intermediate45 = {0};
-+  __m256i v_intermediate76ad = {0};
-+  __m256i v_intermediate76eh = {0};
-+  __m256i v_intermediate76 = {0};
-+  __m256i v_ita0a1e0e1 = {0};
-+  __m256i v_ita2a3e2e3 = {0};
-+  __m256i v_ita4a5e4e5 = {0};
-+  __m256i v_ita6a7e6e7 = {0};
-+  __m256i v_ita0c0e0g0 = {0};
-+  __m256i v_ita1c1e1g1 = {0};
-+  __m256i v_ita4c4e4g4 = {0};
-+  __m256i v_ita5c5e5g5 = {0};
-+  __m256i v_ita0b0e0f0 = {0};
-+  __m256i v_ita4b4e4f4 = {0};
-+  __m256i v_itc0d0g0h0 = {0};
-+  __m256i v_itc4d4g4h4 = {0};
-+  __m256i v_intermediateae = {0};
-+  __m256i v_intermediatebf = {0};
-+  __m256i v_intermediatecg = {0};
-+  __m256i v_intermediatedh = {0};
-+  __m256i v_intermediatedb = {0};
-+  __m256i v_intermediatehf = {0};
-+  __m256i v_sp_cols62 = {0};
-+  __m256i v_sp_bq2662ad = {0};
-+  __m256i v_sp_bq2662eh = {0};
-+  __m256i v_sp_rb26ad = {0};
-+  __m256i v_sp_rb26eh = {0};
-+  __m256i v_sp_cols40pos = {0};
-+  __m256i v_sp_cols04neg = {0};
-+  __m256i v_sp_cols0pm4 = {0};
-+  __m256i v_sp_rcpmad = {0};
-+  __m256i v_sp_rcpmeh = {0};
-+  __m256i v_sp_rd01ad = {0};
-+  __m256i v_sp_rd01eh = {0};
-+  __m256i v_sp_rd32ad = {0};
-+  __m256i v_sp_rd32eh = {0};
-+  __m256i v_sp_sums7351 = {0};
-+  __m256i v_sp_sums5173 = {0};
-+  __m256i v_sp_ri73515173ad = {0};
-+  __m256i v_sp_ri73515173eh = {0};
-+  __m256i v_sp_rl7351ad = {0};
-+  __m256i v_sp_rl7351eh = {0};
-+  __m256i v_sp_cols13 = {0};
-+  __m256i v_sp_bq7153ad = {0};
-+  __m256i v_sp_bq7153eh = {0};
-+  __m256i v_sp_rk75ad = {0};
-+  __m256i v_sp_rk75eh = {0};
-+  __m256i v_sp_rl5173ad = {0};
-+  __m256i v_sp_rl5173eh = {0};
-+  __m256i v_sp_rk13ad = {0};
-+  __m256i v_sp_rk13eh = {0};
-+  __m256i v_final01ad = {0};
-+  __m256i v_final01eh = {0};
-+  __m256i v_final01 = {0};
-+  __m256i v_final32ad = {0};
-+  __m256i v_final32eh = {0};
-+  __m256i v_final32 = {0};
-+  __m256i v_final45ad = {0};
-+  __m256i v_final45eh = {0};
-+  __m256i v_final45 = {0};
-+  __m256i v_final76ad = {0};
-+  __m256i v_final76eh = {0};
-+  __m256i v_final76 = {0};
-+  __m256i v_fta0a1e0e1 = {0};
-+  __m256i v_fta2a3e2e3 = {0};
-+  __m256i v_fta4a5e4e5 = {0};
-+  __m256i v_fta6a7e6e7 = {0};
-+  __m256i v_fta0c0e0g0 = {0};
-+  __m256i v_fta1c1e1g1 = {0};
-+  __m256i v_fta4c4e4g4 = {0};
-+  __m256i v_fta5c5e5g5 = {0};
-+  __m256i v_fta0b0e0f0 = {0};
-+  __m256i v_ftc0d0g0h0 = {0};
-+  __m256i v_fta4b4e4f4 = {0};
-+  __m256i v_ftc4d4g4h4 = {0};
-+  __m256i v_finalae = {0};
-+  __m256i v_finalbf = {0};
-+  __m256i v_finalcg = {0};
-+  __m256i v_finaldh = {0};
-+  __m256i v_final0145 = {0};
-+  __m256i v_final2367 = {0};
-+  uint64_t v_final0 = 0;
-+  uint64_t v_final1 = 0;
-+  uint64_t v_final2 = 0;
-+  uint64_t v_final3 = 0;
-+  uint64_t v_final4 = 0;
-+  uint64_t v_final5 = 0;
-+  uint64_t v_final6 = 0;
-+  uint64_t v_final7 = 0;
-+  wuffs_base__slice_u8 v_remaining = {0};
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_tokens[0];
--  if (coro_susp_point) {
--    v_depth = self->private_data.s_decode_tokens[0].v_depth;
--    v_expect = self->private_data.s_decode_tokens[0].v_expect;
--    v_expect_after_value = self->private_data.s_decode_tokens[0].v_expect_after_value;
-+  if (8u > a_dst_stride) {
-+    return wuffs_base__make_empty_struct();
-   }
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    if (self->private_impl.f_end_of_data) {
--      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--      goto ok;
--    }
--    if (self->private_impl.f_quirks[18u]) {
--      if (self->private_impl.f_quirks[11u] || self->private_impl.f_quirks[12u] || self->private_impl.f_quirks[17u]) {
--        status = wuffs_base__make_status(wuffs_json__error__bad_quirk_combination);
--        goto exit;
-+  v_k_0000 = _mm256_set_epi16((int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u), (int16_t)(0u));
-+  v_k_8080 = _mm256_set_epi16((int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u), (int16_t)(32896u));
-+  v_k_0000_0002 = _mm256_set_epi16((int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u), (int16_t)(2u), (int16_t)(0u));
-+  v_k_0001_FFFF = _mm256_set_epi16((int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(65535u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u), (int16_t)(1u));
-+  v_k_0400_0000 = _mm256_set_epi16((int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u), (int16_t)(0u), (int16_t)(1024u));
-+  v_k_29CF_1151_D630_1151 = _mm256_set_epi16((int16_t)(4433u), (int16_t)(54832u), (int16_t)(4433u), (int16_t)(54832u), (int16_t)(4433u), (int16_t)(54832u), (int16_t)(4433u), (int16_t)(54832u), (int16_t)(4433u), (int16_t)(10703u), (int16_t)(4433u), (int16_t)(10703u), (int16_t)(4433u), (int16_t)(10703u), (int16_t)(4433u), (int16_t)(10703u));
-+  v_k_E333_133E_ADFD_1051 = _mm256_set_epi16((int16_t)(4177u), (int16_t)(44541u), (int16_t)(4177u), (int16_t)(44541u), (int16_t)(4177u), (int16_t)(44541u), (int16_t)(4177u), (int16_t)(44541u), (int16_t)(4926u), (int16_t)(58163u), (int16_t)(4926u), (int16_t)(58163u), (int16_t)(4926u), (int16_t)(58163u), (int16_t)(4926u), (int16_t)(58163u));
-+  v_k_E6DC_25A1_1925_25A1 = _mm256_set_epi16((int16_t)(9633u), (int16_t)(6437u), (int16_t)(9633u), (int16_t)(6437u), (int16_t)(9633u), (int16_t)(6437u), (int16_t)(9633u), (int16_t)(6437u), (int16_t)(9633u), (int16_t)(59100u), (int16_t)(9633u), (int16_t)(59100u), (int16_t)(9633u), (int16_t)(59100u), (int16_t)(9633u), (int16_t)(59100u));
-+  v_k_ECC1_E333_EFB0_ADFD = _mm256_set_epi16((int16_t)(44541u), (int16_t)(61360u), (int16_t)(44541u), (int16_t)(61360u), (int16_t)(44541u), (int16_t)(61360u), (int16_t)(44541u), (int16_t)(61360u), (int16_t)(58163u), (int16_t)(60609u), (int16_t)(58163u), (int16_t)(60609u), (int16_t)(58163u), (int16_t)(60609u), (int16_t)(58163u), (int16_t)(60609u));
-+  do {
-+    if (0u == (wuffs_base__peek_u64le__no_bounds_check((const uint8_t*)(const void*)(self->private_data.f_mcu_blocks[0u] + 8u)) | wuffs_base__peek_u64le__no_bounds_check((const uint8_t*)(const void*)(self->private_data.f_mcu_blocks[0u] + 16u)))) {
-+      v_az_coeffs = _mm_or_si128(_mm_or_si128(_mm_or_si128(_mm_or_si128(_mm_or_si128(_mm_or_si128(_mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 8u)), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 16u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 24u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 32u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 40u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 48u))), _mm_lddqu_si128((const __m128i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 56u)));
-+      if (0u == ((uint64_t)(_mm_cvtsi128_si64(_mm_packs_epi16(v_az_coeffs, v_az_coeffs))))) {
-+        v_rows01 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 0u));
-+        v_quants01 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 0u));
-+        v_rows01 = _mm256_mullo_epi16(v_rows01, v_quants01);
-+        v_az_ah00 = _mm256_slli_epi16(v_rows01, (int32_t)(2u));
-+        v_az_ad00 = _mm256_unpacklo_epi16(v_az_ah00, v_az_ah00);
-+        v_az_eh00 = _mm256_unpackhi_epi16(v_az_ah00, v_az_ah00);
-+        v_az_adeh = _mm256_inserti128_si256(v_az_ad00, _mm256_castsi256_si128(v_az_eh00), (int32_t)(1u));
-+        v_intermediateae = _mm256_shuffle_epi32(v_az_adeh, (int32_t)(0u));
-+        v_intermediatebf = _mm256_shuffle_epi32(v_az_adeh, (int32_t)(85u));
-+        v_intermediatecg = _mm256_shuffle_epi32(v_az_adeh, (int32_t)(170u));
-+        v_intermediatedh = _mm256_shuffle_epi32(v_az_adeh, (int32_t)(255u));
-+        break;
-       }
-     }
--    if (self->private_impl.f_quirks[15u] || self->private_impl.f_quirks[16u]) {
--      if (a_dst) {
--        a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--      }
--      if (a_src) {
--        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--      }
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      status = wuffs_json__decoder__decode_leading(self, a_dst, a_src);
--      if (a_dst) {
--        iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
--      }
--      if (a_src) {
--        iop_a_src = a_src->data.ptr + a_src->meta.ri;
--      }
--      if (status.repr) {
--        goto suspend;
--      }
-+    v_rows01 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 0u));
-+    v_rows23 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 16u));
-+    v_rows45 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 32u));
-+    v_rows67 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_data.f_mcu_blocks[0u] + 48u));
-+    v_quants01 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 0u));
-+    v_quants23 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 16u));
-+    v_quants45 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 32u));
-+    v_quants67 = _mm256_lddqu_si256((const __m256i*)(const void*)(self->private_impl.f_quant_tables[a_q] + 48u));
-+    v_rows01 = _mm256_mullo_epi16(v_rows01, v_quants01);
-+    v_rows23 = _mm256_mullo_epi16(v_rows23, v_quants23);
-+    v_rows45 = _mm256_mullo_epi16(v_rows45, v_quants45);
-+    v_rows67 = _mm256_mullo_epi16(v_rows67, v_quants67);
-+    v_rows04 = _mm256_permute2x128_si256(v_rows01, v_rows45, (int32_t)(32u));
-+    v_rows31 = _mm256_permute2x128_si256(v_rows23, v_rows01, (int32_t)(49u));
-+    v_rows26 = _mm256_permute2x128_si256(v_rows23, v_rows67, (int32_t)(32u));
-+    v_rows75 = _mm256_permute2x128_si256(v_rows67, v_rows45, (int32_t)(49u));
-+    v_fp_rows62 = _mm256_permute2x128_si256(v_rows26, v_rows26, (int32_t)(1u));
-+    v_fp_bq2662ad = _mm256_unpacklo_epi16(v_rows26, v_fp_rows62);
-+    v_fp_bq2662eh = _mm256_unpackhi_epi16(v_rows26, v_fp_rows62);
-+    v_fp_cb26ad = _mm256_madd_epi16(v_fp_bq2662ad, v_k_29CF_1151_D630_1151);
-+    v_fp_cb26eh = _mm256_madd_epi16(v_fp_bq2662eh, v_k_29CF_1151_D630_1151);
-+    v_fp_rows40pos = _mm256_permute2x128_si256(v_rows04, v_rows04, (int32_t)(1u));
-+    v_fp_rows04neg = _mm256_sign_epi16(v_rows04, v_k_0001_FFFF);
-+    v_fp_rows0pm4 = _mm256_add_epi16(v_fp_rows40pos, v_fp_rows04neg);
-+    v_fp_ccpmad = _mm256_srai_epi32(_mm256_unpacklo_epi16(v_k_0000, v_fp_rows0pm4), (int32_t)(3u));
-+    v_fp_ccpmeh = _mm256_srai_epi32(_mm256_unpackhi_epi16(v_k_0000, v_fp_rows0pm4), (int32_t)(3u));
-+    v_fp_cd01ad = _mm256_add_epi32(v_fp_ccpmad, v_fp_cb26ad);
-+    v_fp_cd01eh = _mm256_add_epi32(v_fp_ccpmeh, v_fp_cb26eh);
-+    v_fp_cd32ad = _mm256_sub_epi32(v_fp_ccpmad, v_fp_cb26ad);
-+    v_fp_cd32eh = _mm256_sub_epi32(v_fp_ccpmeh, v_fp_cb26eh);
-+    v_fp_sums7351 = _mm256_add_epi16(v_rows75, v_rows31);
-+    v_fp_sums5173 = _mm256_permute2x128_si256(v_fp_sums7351, v_fp_sums7351, (int32_t)(1u));
-+    v_fp_ci73515173ad = _mm256_unpacklo_epi16(v_fp_sums7351, v_fp_sums5173);
-+    v_fp_ci73515173eh = _mm256_unpackhi_epi16(v_fp_sums7351, v_fp_sums5173);
-+    v_fp_cl7351ad = _mm256_madd_epi16(v_fp_ci73515173ad, v_k_E6DC_25A1_1925_25A1);
-+    v_fp_cl7351eh = _mm256_madd_epi16(v_fp_ci73515173eh, v_k_E6DC_25A1_1925_25A1);
-+    v_fp_rows13 = _mm256_permute2x128_si256(v_rows31, v_rows31, (int32_t)(1u));
-+    v_fp_bq7153ad = _mm256_unpacklo_epi16(v_rows75, v_fp_rows13);
-+    v_fp_bq7153eh = _mm256_unpackhi_epi16(v_rows75, v_fp_rows13);
-+    v_fp_ck75ad = _mm256_add_epi32(_mm256_madd_epi16(v_fp_bq7153ad, v_k_ECC1_E333_EFB0_ADFD), v_fp_cl7351ad);
-+    v_fp_ck75eh = _mm256_add_epi32(_mm256_madd_epi16(v_fp_bq7153eh, v_k_ECC1_E333_EFB0_ADFD), v_fp_cl7351eh);
-+    v_fp_cl5173ad = _mm256_permute2x128_si256(v_fp_cl7351ad, v_fp_cl7351ad, (int32_t)(1u));
-+    v_fp_cl5173eh = _mm256_permute2x128_si256(v_fp_cl7351eh, v_fp_cl7351eh, (int32_t)(1u));
-+    v_fp_ck13ad = _mm256_add_epi32(v_fp_cl5173ad, _mm256_madd_epi16(v_fp_bq7153ad, v_k_E333_133E_ADFD_1051));
-+    v_fp_ck13eh = _mm256_add_epi32(v_fp_cl5173eh, _mm256_madd_epi16(v_fp_bq7153eh, v_k_E333_133E_ADFD_1051));
-+    v_intermediate01ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_fp_cd01ad, v_fp_ck13ad), v_k_0400_0000), (int32_t)(11u));
-+    v_intermediate01eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_fp_cd01eh, v_fp_ck13eh), v_k_0400_0000), (int32_t)(11u));
-+    v_intermediate01 = _mm256_packs_epi32(v_intermediate01ad, v_intermediate01eh);
-+    v_intermediate32ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_fp_cd32ad, v_fp_ck75ad), v_k_0400_0000), (int32_t)(11u));
-+    v_intermediate32eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_fp_cd32eh, v_fp_ck75eh), v_k_0400_0000), (int32_t)(11u));
-+    v_intermediate32 = _mm256_packs_epi32(v_intermediate32ad, v_intermediate32eh);
-+    v_intermediate45ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_fp_cd32ad, v_fp_ck75ad), v_k_0400_0000), (int32_t)(11u));
-+    v_intermediate45eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_fp_cd32eh, v_fp_ck75eh), v_k_0400_0000), (int32_t)(11u));
-+    v_intermediate45 = _mm256_packs_epi32(v_intermediate45ad, v_intermediate45eh);
-+    v_intermediate76ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_fp_cd01ad, v_fp_ck13ad), v_k_0400_0000), (int32_t)(11u));
-+    v_intermediate76eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_fp_cd01eh, v_fp_ck13eh), v_k_0400_0000), (int32_t)(11u));
-+    v_intermediate76 = _mm256_packs_epi32(v_intermediate76ad, v_intermediate76eh);
-+    v_ita0a1e0e1 = _mm256_permute4x64_epi64(v_intermediate01, (int32_t)(216u));
-+    v_ita2a3e2e3 = _mm256_permute4x64_epi64(v_intermediate32, (int32_t)(114u));
-+    v_ita4a5e4e5 = _mm256_permute4x64_epi64(v_intermediate45, (int32_t)(216u));
-+    v_ita6a7e6e7 = _mm256_permute4x64_epi64(v_intermediate76, (int32_t)(114u));
-+    v_ita0c0e0g0 = _mm256_unpacklo_epi16(v_ita0a1e0e1, v_ita2a3e2e3);
-+    v_ita1c1e1g1 = _mm256_unpackhi_epi16(v_ita0a1e0e1, v_ita2a3e2e3);
-+    v_ita4c4e4g4 = _mm256_unpacklo_epi16(v_ita4a5e4e5, v_ita6a7e6e7);
-+    v_ita5c5e5g5 = _mm256_unpackhi_epi16(v_ita4a5e4e5, v_ita6a7e6e7);
-+    v_ita0b0e0f0 = _mm256_unpacklo_epi16(v_ita0c0e0g0, v_ita1c1e1g1);
-+    v_itc0d0g0h0 = _mm256_unpackhi_epi16(v_ita0c0e0g0, v_ita1c1e1g1);
-+    v_ita4b4e4f4 = _mm256_unpacklo_epi16(v_ita4c4e4g4, v_ita5c5e5g5);
-+    v_itc4d4g4h4 = _mm256_unpackhi_epi16(v_ita4c4e4g4, v_ita5c5e5g5);
-+    v_intermediateae = _mm256_unpacklo_epi64(v_ita0b0e0f0, v_ita4b4e4f4);
-+    v_intermediatebf = _mm256_unpackhi_epi64(v_ita0b0e0f0, v_ita4b4e4f4);
-+    v_intermediatecg = _mm256_unpacklo_epi64(v_itc0d0g0h0, v_itc4d4g4h4);
-+    v_intermediatedh = _mm256_unpackhi_epi64(v_itc0d0g0h0, v_itc4d4g4h4);
-+  } while (0);
-+  v_intermediatedb = _mm256_permute2x128_si256(v_intermediatedh, v_intermediatebf, (int32_t)(32u));
-+  v_intermediatehf = _mm256_permute2x128_si256(v_intermediatedh, v_intermediatebf, (int32_t)(49u));
-+  v_sp_cols62 = _mm256_permute2x128_si256(v_intermediatecg, v_intermediatecg, (int32_t)(1u));
-+  v_sp_bq2662ad = _mm256_unpacklo_epi16(v_intermediatecg, v_sp_cols62);
-+  v_sp_bq2662eh = _mm256_unpackhi_epi16(v_intermediatecg, v_sp_cols62);
-+  v_sp_rb26ad = _mm256_madd_epi16(v_sp_bq2662ad, v_k_29CF_1151_D630_1151);
-+  v_sp_rb26eh = _mm256_madd_epi16(v_sp_bq2662eh, v_k_29CF_1151_D630_1151);
-+  v_sp_cols40pos = _mm256_permute2x128_si256(v_intermediateae, v_intermediateae, (int32_t)(1u));
-+  v_sp_cols04neg = _mm256_sign_epi16(v_intermediateae, v_k_0001_FFFF);
-+  v_sp_cols0pm4 = _mm256_add_epi16(v_sp_cols40pos, v_sp_cols04neg);
-+  v_sp_rcpmad = _mm256_srai_epi32(_mm256_unpacklo_epi16(v_k_0000, v_sp_cols0pm4), (int32_t)(3u));
-+  v_sp_rcpmeh = _mm256_srai_epi32(_mm256_unpackhi_epi16(v_k_0000, v_sp_cols0pm4), (int32_t)(3u));
-+  v_sp_rd01ad = _mm256_add_epi32(v_sp_rcpmad, v_sp_rb26ad);
-+  v_sp_rd01eh = _mm256_add_epi32(v_sp_rcpmeh, v_sp_rb26eh);
-+  v_sp_rd32ad = _mm256_sub_epi32(v_sp_rcpmad, v_sp_rb26ad);
-+  v_sp_rd32eh = _mm256_sub_epi32(v_sp_rcpmeh, v_sp_rb26eh);
-+  v_sp_sums7351 = _mm256_add_epi16(v_intermediatehf, v_intermediatedb);
-+  v_sp_sums5173 = _mm256_permute2x128_si256(v_sp_sums7351, v_sp_sums7351, (int32_t)(1u));
-+  v_sp_ri73515173ad = _mm256_unpacklo_epi16(v_sp_sums7351, v_sp_sums5173);
-+  v_sp_ri73515173eh = _mm256_unpackhi_epi16(v_sp_sums7351, v_sp_sums5173);
-+  v_sp_rl7351ad = _mm256_madd_epi16(v_sp_ri73515173ad, v_k_E6DC_25A1_1925_25A1);
-+  v_sp_rl7351eh = _mm256_madd_epi16(v_sp_ri73515173eh, v_k_E6DC_25A1_1925_25A1);
-+  v_sp_cols13 = _mm256_permute2x128_si256(v_intermediatedb, v_intermediatedb, (int32_t)(1u));
-+  v_sp_bq7153ad = _mm256_unpacklo_epi16(v_intermediatehf, v_sp_cols13);
-+  v_sp_bq7153eh = _mm256_unpackhi_epi16(v_intermediatehf, v_sp_cols13);
-+  v_sp_rk75ad = _mm256_add_epi32(_mm256_madd_epi16(v_sp_bq7153ad, v_k_ECC1_E333_EFB0_ADFD), v_sp_rl7351ad);
-+  v_sp_rk75eh = _mm256_add_epi32(_mm256_madd_epi16(v_sp_bq7153eh, v_k_ECC1_E333_EFB0_ADFD), v_sp_rl7351eh);
-+  v_sp_rl5173ad = _mm256_permute2x128_si256(v_sp_rl7351ad, v_sp_rl7351ad, (int32_t)(1u));
-+  v_sp_rl5173eh = _mm256_permute2x128_si256(v_sp_rl7351eh, v_sp_rl7351eh, (int32_t)(1u));
-+  v_sp_rk13ad = _mm256_add_epi32(v_sp_rl5173ad, _mm256_madd_epi16(v_sp_bq7153ad, v_k_E333_133E_ADFD_1051));
-+  v_sp_rk13eh = _mm256_add_epi32(v_sp_rl5173eh, _mm256_madd_epi16(v_sp_bq7153eh, v_k_E333_133E_ADFD_1051));
-+  v_final01ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_sp_rd01ad, v_sp_rk13ad), v_k_0000_0002), (int32_t)(18u));
-+  v_final01eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_sp_rd01eh, v_sp_rk13eh), v_k_0000_0002), (int32_t)(18u));
-+  v_final01 = _mm256_packs_epi32(v_final01ad, v_final01eh);
-+  v_final32ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_sp_rd32ad, v_sp_rk75ad), v_k_0000_0002), (int32_t)(18u));
-+  v_final32eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_add_epi32(v_sp_rd32eh, v_sp_rk75eh), v_k_0000_0002), (int32_t)(18u));
-+  v_final32 = _mm256_packs_epi32(v_final32ad, v_final32eh);
-+  v_final45ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_sp_rd32ad, v_sp_rk75ad), v_k_0000_0002), (int32_t)(18u));
-+  v_final45eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_sp_rd32eh, v_sp_rk75eh), v_k_0000_0002), (int32_t)(18u));
-+  v_final45 = _mm256_packs_epi32(v_final45ad, v_final45eh);
-+  v_final76ad = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_sp_rd01ad, v_sp_rk13ad), v_k_0000_0002), (int32_t)(18u));
-+  v_final76eh = _mm256_srai_epi32(_mm256_add_epi32(_mm256_sub_epi32(v_sp_rd01eh, v_sp_rk13eh), v_k_0000_0002), (int32_t)(18u));
-+  v_final76 = _mm256_packs_epi32(v_final76ad, v_final76eh);
-+  v_fta0a1e0e1 = _mm256_permute4x64_epi64(v_final01, (int32_t)(216u));
-+  v_fta2a3e2e3 = _mm256_permute4x64_epi64(v_final32, (int32_t)(114u));
-+  v_fta4a5e4e5 = _mm256_permute4x64_epi64(v_final45, (int32_t)(216u));
-+  v_fta6a7e6e7 = _mm256_permute4x64_epi64(v_final76, (int32_t)(114u));
-+  v_fta0c0e0g0 = _mm256_unpacklo_epi16(v_fta0a1e0e1, v_fta2a3e2e3);
-+  v_fta1c1e1g1 = _mm256_unpackhi_epi16(v_fta0a1e0e1, v_fta2a3e2e3);
-+  v_fta4c4e4g4 = _mm256_unpacklo_epi16(v_fta4a5e4e5, v_fta6a7e6e7);
-+  v_fta5c5e5g5 = _mm256_unpackhi_epi16(v_fta4a5e4e5, v_fta6a7e6e7);
-+  v_fta0b0e0f0 = _mm256_unpacklo_epi16(v_fta0c0e0g0, v_fta1c1e1g1);
-+  v_ftc0d0g0h0 = _mm256_unpackhi_epi16(v_fta0c0e0g0, v_fta1c1e1g1);
-+  v_fta4b4e4f4 = _mm256_unpacklo_epi16(v_fta4c4e4g4, v_fta5c5e5g5);
-+  v_ftc4d4g4h4 = _mm256_unpackhi_epi16(v_fta4c4e4g4, v_fta5c5e5g5);
-+  v_finalae = _mm256_unpacklo_epi64(v_fta0b0e0f0, v_fta4b4e4f4);
-+  v_finalbf = _mm256_unpackhi_epi64(v_fta0b0e0f0, v_fta4b4e4f4);
-+  v_finalcg = _mm256_unpacklo_epi64(v_ftc0d0g0h0, v_ftc4d4g4h4);
-+  v_finaldh = _mm256_unpackhi_epi64(v_ftc0d0g0h0, v_ftc4d4g4h4);
-+  v_final0145 = _mm256_add_epi8(_mm256_packs_epi16(v_finalae, v_finalbf), v_k_8080);
-+  v_final2367 = _mm256_add_epi8(_mm256_packs_epi16(v_finalcg, v_finaldh), v_k_8080);
-+  v_final0 = ((uint64_t)(_mm256_extract_epi64(v_final0145, (int32_t)(0u))));
-+  v_final1 = ((uint64_t)(_mm256_extract_epi64(v_final0145, (int32_t)(1u))));
-+  v_final2 = ((uint64_t)(_mm256_extract_epi64(v_final2367, (int32_t)(0u))));
-+  v_final3 = ((uint64_t)(_mm256_extract_epi64(v_final2367, (int32_t)(1u))));
-+  v_final4 = ((uint64_t)(_mm256_extract_epi64(v_final0145, (int32_t)(2u))));
-+  v_final5 = ((uint64_t)(_mm256_extract_epi64(v_final0145, (int32_t)(3u))));
-+  v_final6 = ((uint64_t)(_mm256_extract_epi64(v_final2367, (int32_t)(2u))));
-+  v_final7 = ((uint64_t)(_mm256_extract_epi64(v_final2367, (int32_t)(3u))));
-+  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-+  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final0);
-+  a_dst_buffer = v_remaining;
-+  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-+  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final1);
-+  a_dst_buffer = v_remaining;
-+  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-+  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final2);
-+  a_dst_buffer = v_remaining;
-+  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-+  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final3);
-+  a_dst_buffer = v_remaining;
-+  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-+  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final4);
-+  a_dst_buffer = v_remaining;
-+  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-+  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final5);
-+  a_dst_buffer = v_remaining;
-+  if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+  v_remaining = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride);
-+  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final6);
-+  a_dst_buffer = v_remaining;
-+  if (8u > ((uint64_t)(a_dst_buffer.len))) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+  wuffs_base__poke_u64le__no_bounds_check(a_dst_buffer.ptr, v_final7);
-+  return wuffs_base__make_empty_struct();
-+}
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
-+// ‼ WUFFS MULTI-FILE SECTION -x86_avx2
-+
-+// -------- func jpeg.decoder.get_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_jpeg__decoder__get_quirk(
-+    const wuffs_jpeg__decoder* self,
-+    uint32_t a_key) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  if (a_key == 2u) {
-+    if (self->private_impl.f_use_lower_quality) {
-+      return 18446744073709551615u;
-+    }
-+  } else if (a_key == 1220532224u) {
-+    if (self->private_impl.f_reject_progressive_jpegs) {
-+      return 1u;
-+    }
-+  }
-+  return 0u;
-+}
-+
-+// -------- func jpeg.decoder.set_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_jpeg__decoder__set_quirk(
-+    wuffs_jpeg__decoder* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+
-+  if (a_key == 2u) {
-+    self->private_impl.f_use_lower_quality = (a_value >= 9223372036854775808u);
-+    return wuffs_base__make_status(NULL);
-+  } else if (a_key == 1220532224u) {
-+    self->private_impl.f_reject_progressive_jpegs = (a_value != 0u);
-+    return wuffs_base__make_status(NULL);
-+  }
-+  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+}
-+
-+// -------- func jpeg.decoder.decode_image_config
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_jpeg__decoder__decode_image_config(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 1)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_image_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_jpeg__decoder__do_decode_image_config(self, a_dst, a_src);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_jpeg__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+
-+    ok:
-+    self->private_impl.p_decode_image_config = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func jpeg.decoder.do_decode_image_config
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_jpeg__decoder__do_decode_image_config(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_c8 = 0;
-+  uint8_t v_marker = 0;
-+  uint32_t v_pixfmt = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config;
-+  if (coro_susp_point) {
-+    v_marker = self->private_data.s_do_decode_image_config.v_marker;
-+  }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_call_sequence != 0u) {
-+      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+      goto exit;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_0 = *iop_a_src++;
-+      v_c8 = t_0;
-+    }
-+    if (v_c8 != 255u) {
-+      status = wuffs_base__make_status(wuffs_jpeg__error__bad_header);
-+      goto exit;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_1 = *iop_a_src++;
-+      v_c8 = t_1;
-+    }
-+    if (v_c8 != 216u) {
-+      status = wuffs_base__make_status(wuffs_jpeg__error__bad_header);
-+      goto exit;
-     }
--    v_expect = 7858u;
--    label__outer__continue:;
-     while (true) {
-       while (true) {
--        if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
--          goto label__outer__continue;
--        }
--        v_whitespace_length = 0u;
--        v_c = 0u;
--        v_class = 0u;
--        while (true) {
--          if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--            if (v_whitespace_length > 0u) {
--              *iop_a_dst++ = wuffs_base__make_token(
--                  (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                  (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--              v_whitespace_length = 0u;
--            }
--            if (a_src && a_src->meta.closed) {
--              status = wuffs_base__make_status(wuffs_json__error__bad_input);
--              goto exit;
--            }
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
--            goto label__outer__continue;
--          }
--          v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--          v_class = WUFFS_JSON__LUT_CLASSES[v_c];
--          if (v_class != 0u) {
--            break;
--          }
--          iop_a_src += 1u;
--          if (v_whitespace_length >= 65534u) {
--            *iop_a_dst++ = wuffs_base__make_token(
--                (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                (((uint64_t)(65535u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--            v_whitespace_length = 0u;
--            goto label__outer__continue;
-+            goto suspend;
-           }
--          v_whitespace_length += 1u;
-+          uint8_t t_2 = *iop_a_src++;
-+          v_c8 = t_2;
-         }
--        if (v_whitespace_length > 0u) {
--          *iop_a_dst++ = wuffs_base__make_token(
--              (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--              (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--          v_whitespace_length = 0u;
--          if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--            goto label__outer__continue;
-+        if (v_c8 == 255u) {
-+          break;
-+        }
-+      }
-+      while (true) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-           }
-+          uint8_t t_3 = *iop_a_src++;
-+          v_c8 = t_3;
-         }
--        if (0u == (v_expect & (((uint32_t)(1u)) << v_class))) {
--          status = wuffs_base__make_status(wuffs_json__error__bad_input);
--          goto exit;
-+        if (v_c8 != 255u) {
-+          v_marker = v_c8;
-+          break;
-         }
--        if (v_class == 1u) {
--          *iop_a_dst++ = wuffs_base__make_token(
--              (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--          iop_a_src += 1u;
--          label__string_loop_outer__continue:;
--          while (true) {
--            if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
--              continue;
--            }
--            v_string_length = 0u;
-+      }
-+      if (v_marker == 0u) {
-+        continue;
-+      } else if ((208u <= v_marker) && (v_marker <= 217u)) {
-+        if (v_marker <= 215u) {
-+          continue;
-+        }
-+      } else {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+          uint32_t t_4;
-+          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+            t_4 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
-+            iop_a_src += 2;
-+          } else {
-+            self->private_data.s_do_decode_image_config.scratch = 0;
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-             while (true) {
--              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--                if (v_string_length > 0u) {
--                  *iop_a_dst++ = wuffs_base__make_token(
--                      (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                      (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                  v_string_length = 0u;
--                }
--                if (a_src && a_src->meta.closed) {
--                  status = wuffs_base__make_status(wuffs_json__error__bad_input);
--                  goto exit;
--                }
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-                 status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
--                goto label__string_loop_outer__continue;
-+                goto suspend;
-               }
--              while (((uint64_t)(io2_a_src - iop_a_src)) > 4u) {
--                v_c4 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--                if (0u != (WUFFS_JSON__LUT_CHARS[(255u & (v_c4 >> 0u))] |
--                    WUFFS_JSON__LUT_CHARS[(255u & (v_c4 >> 8u))] |
--                    WUFFS_JSON__LUT_CHARS[(255u & (v_c4 >> 16u))] |
--                    WUFFS_JSON__LUT_CHARS[(255u & (v_c4 >> 24u))])) {
--                  break;
--                }
--                iop_a_src += 4u;
--                if (v_string_length > 65527u) {
--                  *iop_a_dst++ = wuffs_base__make_token(
--                      (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                      (((uint64_t)((v_string_length + 4u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                  v_string_length = 0u;
--                  goto label__string_loop_outer__continue;
--                }
--                v_string_length += 4u;
-+              uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+              uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFFu));
-+              *scratch >>= 8;
-+              *scratch <<= 8;
-+              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4);
-+              if (num_bits_4 == 8) {
-+                t_4 = ((uint32_t)(*scratch >> 48));
-+                break;
-               }
--              v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--              v_char = WUFFS_JSON__LUT_CHARS[v_c];
--              if (v_char == 0u) {
--                iop_a_src += 1u;
--                if (v_string_length >= 65531u) {
--                  *iop_a_dst++ = wuffs_base__make_token(
--                      (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                      (((uint64_t)(65532u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                  v_string_length = 0u;
--                  goto label__string_loop_outer__continue;
--                }
--                v_string_length += 1u;
--                continue;
--              } else if (v_char == 1u) {
--                if (v_string_length != 0u) {
--                  *iop_a_dst++ = wuffs_base__make_token(
--                      (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                      (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                  v_string_length = 0u;
--                }
--                goto label__string_loop_outer__break;
--              } else if (v_char == 2u) {
--                if (v_string_length > 0u) {
--                  *iop_a_dst++ = wuffs_base__make_token(
--                      (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                      (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                  v_string_length = 0u;
--                  if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--                    goto label__string_loop_outer__continue;
--                  }
--                }
--                if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
--                  if (a_src && a_src->meta.closed) {
--                    status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
--                    goto exit;
--                  }
--                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
--                  goto label__string_loop_outer__continue;
--                }
--                v_c = ((uint8_t)((wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8u)));
--                v_backslash = WUFFS_JSON__LUT_BACKSLASHES[v_c];
--                if ((v_backslash & 128u) != 0u) {
--                  iop_a_src += 2u;
--                  *iop_a_dst++ = wuffs_base__make_token(
--                      (((uint64_t)((6291456u | ((uint32_t)((v_backslash & 127u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                      (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                  goto label__string_loop_outer__continue;
--                } else if (v_backslash != 0u) {
--                  if (self->private_impl.f_quirks[WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_QUIRKS[(v_backslash & 7u)]]) {
--                    iop_a_src += 2u;
--                    *iop_a_dst++ = wuffs_base__make_token(
--                        (((uint64_t)((6291456u | ((uint32_t)(WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_CHARS[(v_backslash & 7u)]))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                        (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                    goto label__string_loop_outer__continue;
--                  }
--                } else if (v_c == 117u) {
--                  if (((uint64_t)(io2_a_src - iop_a_src)) < 6u) {
--                    if (a_src && a_src->meta.closed) {
--                      status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
--                      goto exit;
--                    }
--                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
--                    goto label__string_loop_outer__continue;
--                  }
--                  v_uni4_string = (((uint64_t)(wuffs_base__peek_u48le__no_bounds_check(iop_a_src))) >> 16u);
--                  v_uni4_value = 0u;
--                  v_uni4_ok = 128u;
--                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 0u))];
--                  v_uni4_ok &= v_c;
--                  v_uni4_value |= (((uint32_t)((v_c & 15u))) << 12u);
--                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 8u))];
--                  v_uni4_ok &= v_c;
--                  v_uni4_value |= (((uint32_t)((v_c & 15u))) << 8u);
--                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 16u))];
--                  v_uni4_ok &= v_c;
--                  v_uni4_value |= (((uint32_t)((v_c & 15u))) << 4u);
--                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 24u))];
--                  v_uni4_ok &= v_c;
--                  v_uni4_value |= (((uint32_t)((v_c & 15u))) << 0u);
--                  if (v_uni4_ok == 0u) {
--                  } else if ((v_uni4_value < 55296u) || (57343u < v_uni4_value)) {
--                    iop_a_src += 6u;
--                    *iop_a_dst++ = wuffs_base__make_token(
--                        (((uint64_t)((6291456u | v_uni4_value))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                        (((uint64_t)(6u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                    goto label__string_loop_outer__continue;
--                  } else if (v_uni4_value >= 56320u) {
--                  } else {
--                    if (((uint64_t)(io2_a_src - iop_a_src)) < 12u) {
--                      if (a_src && a_src->meta.closed) {
--                        if (self->private_impl.f_quirks[20u]) {
--                          iop_a_src += 6u;
--                          *iop_a_dst++ = wuffs_base__make_token(
--                              (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                              (((uint64_t)(6u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                          goto label__string_loop_outer__continue;
--                        }
--                        status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
--                        goto exit;
--                      }
--                      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
--                      goto label__string_loop_outer__continue;
--                    }
--                    v_uni4_string = (wuffs_base__peek_u64le__no_bounds_check(iop_a_src + 4u) >> 16u);
--                    if (((255u & (v_uni4_string >> 0u)) != 92u) || ((255u & (v_uni4_string >> 8u)) != 117u)) {
--                      v_uni4_high_surrogate = 0u;
--                      v_uni4_value = 0u;
--                      v_uni4_ok = 0u;
--                    } else {
--                      v_uni4_high_surrogate = (65536u + ((v_uni4_value - 55296u) << 10u));
--                      v_uni4_value = 0u;
--                      v_uni4_ok = 128u;
--                      v_uni4_string >>= 16u;
--                      v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 0u))];
--                      v_uni4_ok &= v_c;
--                      v_uni4_value |= (((uint32_t)((v_c & 15u))) << 12u);
--                      v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 8u))];
--                      v_uni4_ok &= v_c;
--                      v_uni4_value |= (((uint32_t)((v_c & 15u))) << 8u);
--                      v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 16u))];
--                      v_uni4_ok &= v_c;
--                      v_uni4_value |= (((uint32_t)((v_c & 15u))) << 4u);
--                      v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 24u))];
--                      v_uni4_ok &= v_c;
--                      v_uni4_value |= (((uint32_t)((v_c & 15u))) << 0u);
--                    }
--                    if ((v_uni4_ok != 0u) && (56320u <= v_uni4_value) && (v_uni4_value <= 57343u)) {
--                      v_uni4_value -= 56320u;
--                      iop_a_src += 12u;
--                      *iop_a_dst++ = wuffs_base__make_token(
--                          (((uint64_t)((6291456u | v_uni4_high_surrogate | v_uni4_value))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                          (((uint64_t)(12u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                      goto label__string_loop_outer__continue;
--                    }
--                  }
--                  if (self->private_impl.f_quirks[20u]) {
--                    if (((uint64_t)(io2_a_src - iop_a_src)) < 6u) {
--                      status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
--                      goto exit;
--                    }
--                    iop_a_src += 6u;
--                    *iop_a_dst++ = wuffs_base__make_token(
--                        (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                        (((uint64_t)(6u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                    goto label__string_loop_outer__continue;
--                  }
--                } else if ((v_c == 85u) && self->private_impl.f_quirks[2u]) {
--                  if (((uint64_t)(io2_a_src - iop_a_src)) < 10u) {
--                    if (a_src && a_src->meta.closed) {
--                      status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
--                      goto exit;
--                    }
--                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
--                    goto label__string_loop_outer__continue;
--                  }
--                  v_uni8_string = wuffs_base__peek_u64le__no_bounds_check(iop_a_src + 2u);
--                  v_uni8_value = 0u;
--                  v_uni8_ok = 128u;
--                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 0u))];
--                  v_uni8_ok &= v_c;
--                  v_uni8_value |= (((uint32_t)((v_c & 15u))) << 28u);
--                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 8u))];
--                  v_uni8_ok &= v_c;
--                  v_uni8_value |= (((uint32_t)((v_c & 15u))) << 24u);
--                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 16u))];
--                  v_uni8_ok &= v_c;
--                  v_uni8_value |= (((uint32_t)((v_c & 15u))) << 20u);
--                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 24u))];
--                  v_uni8_ok &= v_c;
--                  v_uni8_value |= (((uint32_t)((v_c & 15u))) << 16u);
--                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 32u))];
--                  v_uni8_ok &= v_c;
--                  v_uni8_value |= (((uint32_t)((v_c & 15u))) << 12u);
--                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 40u))];
--                  v_uni8_ok &= v_c;
--                  v_uni8_value |= (((uint32_t)((v_c & 15u))) << 8u);
--                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 48u))];
--                  v_uni8_ok &= v_c;
--                  v_uni8_value |= (((uint32_t)((v_c & 15u))) << 4u);
--                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 56u))];
--                  v_uni8_ok &= v_c;
--                  v_uni8_value |= (((uint32_t)((v_c & 15u))) << 0u);
--                  if (v_uni8_ok == 0u) {
--                  } else if ((v_uni8_value < 55296u) || ((57343u < v_uni8_value) && (v_uni8_value <= 1114111u))) {
--                    iop_a_src += 10u;
--                    *iop_a_dst++ = wuffs_base__make_token(
--                        (((uint64_t)((6291456u | (v_uni8_value & 2097151u)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                        (((uint64_t)(10u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                    goto label__string_loop_outer__continue;
--                  } else if (self->private_impl.f_quirks[20u]) {
--                    iop_a_src += 10u;
--                    *iop_a_dst++ = wuffs_base__make_token(
--                        (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                        (((uint64_t)(10u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                    goto label__string_loop_outer__continue;
--                  }
--                } else if ((v_c == 120u) && self->private_impl.f_quirks[9u]) {
--                  if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
--                    if (a_src && a_src->meta.closed) {
--                      status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
--                      goto exit;
--                    }
--                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
--                    goto label__string_loop_outer__continue;
--                  }
--                  v_backslash_x_string = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--                  v_backslash_x_ok = 128u;
--                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_backslash_x_string >> 16u))];
--                  v_backslash_x_ok &= v_c;
--                  v_backslash_x_value = ((uint8_t)(((v_c & 15u) << 4u)));
--                  v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_backslash_x_string >> 24u))];
--                  v_backslash_x_ok &= v_c;
--                  v_backslash_x_value = ((uint8_t)((v_backslash_x_value | (v_c & 15u))));
--                  if ((v_backslash_x_ok == 0u) || ((v_backslash_x_string & 65535u) != 30812u)) {
--                    status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
--                    goto exit;
--                  }
--                  iop_a_src += 4u;
--                  *iop_a_dst++ = wuffs_base__make_token(
--                      (((uint64_t)((6291456u | ((uint32_t)(v_backslash_x_value))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                      (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                  goto label__string_loop_outer__continue;
--                }
--                status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
--                goto exit;
--              } else if (v_char == 3u) {
--                if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
--                  if (v_string_length > 0u) {
--                    *iop_a_dst++ = wuffs_base__make_token(
--                        (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                        (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                    v_string_length = 0u;
--                    if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--                      goto label__string_loop_outer__continue;
--                    }
--                  }
--                  if (a_src && a_src->meta.closed) {
--                    if (self->private_impl.f_quirks[20u]) {
--                      *iop_a_dst++ = wuffs_base__make_token(
--                          (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                      iop_a_src += 1u;
--                      goto label__string_loop_outer__continue;
--                    }
--                    status = wuffs_base__make_status(wuffs_json__error__bad_utf_8);
--                    goto exit;
--                  }
--                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11);
--                  goto label__string_loop_outer__continue;
--                }
--                v_multi_byte_utf8 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--                if ((v_multi_byte_utf8 & 49152u) == 32768u) {
--                  v_multi_byte_utf8 = ((1984u & ((uint32_t)(v_multi_byte_utf8 << 6u))) | (63u & (v_multi_byte_utf8 >> 8u)));
--                  iop_a_src += 2u;
--                  if (v_string_length >= 65528u) {
--                    *iop_a_dst++ = wuffs_base__make_token(
--                        (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                        (((uint64_t)((v_string_length + 2u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                    v_string_length = 0u;
--                    goto label__string_loop_outer__continue;
--                  }
--                  v_string_length += 2u;
--                  continue;
--                }
--              } else if (v_char == 4u) {
--                if (((uint64_t)(io2_a_src - iop_a_src)) < 3u) {
--                  if (v_string_length > 0u) {
--                    *iop_a_dst++ = wuffs_base__make_token(
--                        (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                        (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                    v_string_length = 0u;
--                    if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--                      goto label__string_loop_outer__continue;
--                    }
--                  }
--                  if (a_src && a_src->meta.closed) {
--                    if (self->private_impl.f_quirks[20u]) {
--                      *iop_a_dst++ = wuffs_base__make_token(
--                          (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                      iop_a_src += 1u;
--                      goto label__string_loop_outer__continue;
--                    }
--                    status = wuffs_base__make_status(wuffs_json__error__bad_utf_8);
--                    goto exit;
--                  }
--                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(12);
--                  goto label__string_loop_outer__continue;
--                }
--                v_multi_byte_utf8 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
--                if ((v_multi_byte_utf8 & 12632064u) == 8421376u) {
--                  v_multi_byte_utf8 = ((61440u & ((uint32_t)(v_multi_byte_utf8 << 12u))) | (4032u & (v_multi_byte_utf8 >> 2u)) | (63u & (v_multi_byte_utf8 >> 16u)));
--                  if ((2047u < v_multi_byte_utf8) && ((v_multi_byte_utf8 < 55296u) || (57343u < v_multi_byte_utf8))) {
--                    iop_a_src += 3u;
--                    if (v_string_length >= 65528u) {
--                      *iop_a_dst++ = wuffs_base__make_token(
--                          (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                          (((uint64_t)((v_string_length + 3u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                      v_string_length = 0u;
--                      goto label__string_loop_outer__continue;
--                    }
--                    v_string_length += 3u;
--                    continue;
--                  }
--                }
--              } else if (v_char == 5u) {
--                if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
--                  if (v_string_length > 0u) {
--                    *iop_a_dst++ = wuffs_base__make_token(
--                        (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                        (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                    v_string_length = 0u;
--                    if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--                      goto label__string_loop_outer__continue;
--                    }
--                  }
--                  if (a_src && a_src->meta.closed) {
--                    if (self->private_impl.f_quirks[20u]) {
--                      *iop_a_dst++ = wuffs_base__make_token(
--                          (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                      iop_a_src += 1u;
--                      goto label__string_loop_outer__continue;
--                    }
--                    status = wuffs_base__make_status(wuffs_json__error__bad_utf_8);
--                    goto exit;
--                  }
--                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(13);
--                  goto label__string_loop_outer__continue;
--                }
--                v_multi_byte_utf8 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--                if ((v_multi_byte_utf8 & 3233857536u) == 2155905024u) {
--                  v_multi_byte_utf8 = ((1835008u & ((uint32_t)(v_multi_byte_utf8 << 18u))) |
--                      (258048u & ((uint32_t)(v_multi_byte_utf8 << 4u))) |
--                      (4032u & (v_multi_byte_utf8 >> 10u)) |
--                      (63u & (v_multi_byte_utf8 >> 24u)));
--                  if ((65535u < v_multi_byte_utf8) && (v_multi_byte_utf8 <= 1114111u)) {
--                    iop_a_src += 4u;
--                    if (v_string_length >= 65528u) {
--                      *iop_a_dst++ = wuffs_base__make_token(
--                          (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                          (((uint64_t)((v_string_length + 4u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                      v_string_length = 0u;
--                      goto label__string_loop_outer__continue;
--                    }
--                    v_string_length += 4u;
--                    continue;
--                  }
--                }
--              }
--              if (v_string_length > 0u) {
--                *iop_a_dst++ = wuffs_base__make_token(
--                    (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                    (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                    (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                v_string_length = 0u;
--                if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--                  goto label__string_loop_outer__continue;
--                }
--              }
--              if ((v_char & 128u) != 0u) {
--                if (self->private_impl.f_quirks[0u]) {
--                  *iop_a_dst++ = wuffs_base__make_token(
--                      (((uint64_t)((6291456u | ((uint32_t)((v_char & 127u)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                  iop_a_src += 1u;
--                  goto label__string_loop_outer__continue;
--                }
--                if (v_char == 138u) {
--                  status = wuffs_base__make_status(wuffs_json__error__bad_new_line_in_a_string);
--                  goto exit;
--                }
--                status = wuffs_base__make_status(wuffs_json__error__bad_c0_control_code);
--                goto exit;
--              }
--              if (self->private_impl.f_quirks[20u]) {
--                *iop_a_dst++ = wuffs_base__make_token(
--                    (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                    (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                    (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--                iop_a_src += 1u;
--                goto label__string_loop_outer__continue;
--              }
--              status = wuffs_base__make_status(wuffs_json__error__bad_utf_8);
--              goto exit;
-+              num_bits_4 += 8u;
-+              *scratch |= ((uint64_t)(num_bits_4));
-             }
-           }
--          label__string_loop_outer__break:;
--          while (true) {
--            if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--              if (a_src && a_src->meta.closed) {
--                status = wuffs_base__make_status(wuffs_json__error__bad_input);
--                goto exit;
--              }
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(14);
--              continue;
--            }
--            if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(15);
--              continue;
--            }
--            iop_a_src += 1u;
--            *iop_a_dst++ = wuffs_base__make_token(
--                (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--            break;
-+          self->private_impl.f_payload_length = t_4;
-+        }
-+        if (self->private_impl.f_payload_length < 2u) {
-+          status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker);
-+          goto exit;
-+        }
-+        self->private_impl.f_payload_length -= 2u;
-+      }
-+      if (v_marker < 192u) {
-+        status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
-+        goto exit;
-+      } else if (v_marker < 208u) {
-+        if (v_marker <= 194u) {
-+          if ((v_marker == 194u) && self->private_impl.f_reject_progressive_jpegs) {
-+            status = wuffs_base__make_status(wuffs_jpeg__error__rejected_progressive_jpeg);
-+            goto exit;
-+          } else if (self->private_impl.f_sof_marker != 0u) {
-+            status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
-+            goto exit;
-           }
--          if (0u == (v_expect & (((uint32_t)(1u)) << 4u))) {
--            v_expect = 4104u;
--            goto label__outer__continue;
-+          self->private_impl.f_sof_marker = v_marker;
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+          status = wuffs_jpeg__decoder__decode_sof(self, a_src);
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+          if (status.repr) {
-+            goto suspend;
-           }
-           break;
--        } else if (v_class == 2u) {
--          iop_a_src += 1u;
--          *iop_a_dst++ = wuffs_base__make_token(
--              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--          if (0u == (v_expect & (((uint32_t)(1u)) << 8u))) {
--            if (self->private_impl.f_quirks[13u]) {
--              v_expect = 4162u;
--            } else {
--              v_expect = 4098u;
--            }
--          } else {
--            if (self->private_impl.f_quirks[13u]) {
--              v_expect = 8114u;
--            } else {
--              v_expect = 7858u;
--            }
-+        } else if (v_marker == 195u) {
-+          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_lossless_coding);
-+          goto exit;
-+        } else if (v_marker == 196u) {
-+          status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
-+          goto exit;
-+        } else if ((197u <= v_marker) && (v_marker <= 199u)) {
-+          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_hierarchical_coding);
-+          goto exit;
-+        } else if (v_marker == 200u) {
-+          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
-+          goto exit;
-+        } else {
-+          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_arithmetic_coding);
-+          goto exit;
-+        }
-+      } else if (v_marker < 224u) {
-+        if (v_marker < 218u) {
-+          status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker);
-+          goto exit;
-+        } else if (v_marker == 218u) {
-+          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
-+          goto exit;
-+        } else if (v_marker == 219u) {
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-           }
--          goto label__outer__continue;
--        } else if (v_class == 3u) {
--          iop_a_src += 1u;
--          *iop_a_dst++ = wuffs_base__make_token(
--              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--          v_expect = 7858u;
--          goto label__outer__continue;
--        } else if (v_class == 4u) {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+          status = wuffs_jpeg__decoder__decode_dqt(self, a_src);
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+          if (status.repr) {
-+            goto suspend;
-+          }
-+          continue;
-+        } else if (v_marker == 221u) {
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+          status = wuffs_jpeg__decoder__decode_dri(self, a_src);
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+          if (status.repr) {
-+            goto suspend;
-+          }
-+          continue;
-+        } else {
-+          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
-+          goto exit;
-+        }
-+      } else if (v_marker < 240u) {
-+        if (a_src) {
-+          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+        }
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
-+        status = wuffs_jpeg__decoder__decode_appn(self, a_src, v_marker);
-+        if (a_src) {
-+          iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+        }
-+        if (status.repr) {
-+          goto suspend;
-+        }
-+        continue;
-+      } else {
-+        if (v_marker == 254u) {
-+        } else {
-+          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
-+          goto exit;
-+        }
-+      }
-+      self->private_data.s_do_decode_image_config.scratch = self->private_impl.f_payload_length;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
-+      if (self->private_data.s_do_decode_image_config.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+        self->private_data.s_do_decode_image_config.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+        iop_a_src = io2_a_src;
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      iop_a_src += self->private_data.s_do_decode_image_config.scratch;
-+      self->private_impl.f_payload_length = 0u;
-+    }
-+    self->private_impl.choosy_decode_idct = (
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V3)
-+        wuffs_base__cpu_arch__have_x86_avx2() ? &wuffs_jpeg__decoder__decode_idct_x86_avx2 :
-+#endif
-+        self->private_impl.choosy_decode_idct);
-+    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
-+    if (a_dst != NULL) {
-+      v_pixfmt = 536870920u;
-+      if (self->private_impl.f_num_components > 1u) {
-+        v_pixfmt = 2415954056u;
-+      }
-+      wuffs_base__image_config__set(
-+          a_dst,
-+          v_pixfmt,
-+          0u,
-+          self->private_impl.f_width,
-+          self->private_impl.f_height,
-+          self->private_impl.f_frame_config_io_position,
-+          true);
-+    }
-+    self->private_impl.f_call_sequence = 32u;
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_do_decode_image_config = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_do_decode_image_config.v_marker = v_marker;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func jpeg.decoder.decode_dqt
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_jpeg__decoder__decode_dqt(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_c8 = 0;
-+  uint8_t v_q = 0;
-+  uint32_t v_i = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_dqt;
-+  if (coro_susp_point) {
-+    v_q = self->private_data.s_decode_dqt.v_q;
-+    v_i = self->private_data.s_decode_dqt.v_i;
-+  }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (self->private_impl.f_payload_length > 0u) {
-+      self->private_impl.f_payload_length -= 1u;
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_0 = *iop_a_src++;
-+        v_c8 = t_0;
-+      }
-+      if (((uint8_t)(v_c8 & 15u)) > 3u) {
-+        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dqt_marker);
-+        goto exit;
-+      }
-+      v_q = ((uint8_t)(v_c8 & 15u));
-+      if (((uint8_t)(v_c8 >> 4u)) == 1u) {
-+        status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision);
-+        goto exit;
-+      } else if ((((uint8_t)(v_c8 >> 4u)) > 1u) || (self->private_impl.f_payload_length < 64u)) {
-+        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dqt_marker);
-+        goto exit;
-+      }
-+      self->private_impl.f_payload_length -= 64u;
-+      v_i = 0u;
-+      while (v_i < 64u) {
-+        v_i += 1u;
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint16_t t_1 = *iop_a_src++;
-+          self->private_impl.f_quant_tables[v_q][WUFFS_JPEG__UNZIG[v_i]] = t_1;
-+        }
-+      }
-+      self->private_impl.f_seen_dqt[v_q] = true;
-+      if (self->private_impl.f_sof_marker == 0u) {
-+        v_i = 0u;
-+        while (v_i < 64u) {
-+          self->private_impl.f_saved_quant_tables[v_q][v_i] = self->private_impl.f_quant_tables[v_q][v_i];
-+          v_i += 1u;
-+        }
-+        self->private_impl.f_saved_seen_dqt[v_q] = true;
-+      }
-+    }
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_decode_dqt = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_dqt = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_dqt.v_q = v_q;
-+  self->private_data.s_decode_dqt.v_i = v_i;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func jpeg.decoder.decode_dri
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_jpeg__decoder__decode_dri(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_dri;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_payload_length != 2u) {
-+      status = wuffs_base__make_status(wuffs_jpeg__error__bad_dri_marker);
-+      goto exit;
-+    }
-+    self->private_impl.f_payload_length = 0u;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      uint16_t t_0;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+        t_0 = wuffs_base__peek_u16be__no_bounds_check(iop_a_src);
-+        iop_a_src += 2;
-+      } else {
-+        self->private_data.s_decode_dri.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_dri.scratch;
-+          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
-+          *scratch >>= 8;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
-+          if (num_bits_0 == 8) {
-+            t_0 = ((uint16_t)(*scratch >> 48));
-+            break;
-+          }
-+          num_bits_0 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_0));
-+        }
-+      }
-+      self->private_impl.f_restart_interval = t_0;
-+    }
-+    if (self->private_impl.f_sof_marker == 0u) {
-+      self->private_impl.f_saved_restart_interval = self->private_impl.f_restart_interval;
-+    }
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_decode_dri = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_dri = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func jpeg.decoder.decode_appn
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_jpeg__decoder__decode_appn(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__io_buffer* a_src,
-+    uint8_t a_marker) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_c8 = 0;
-+  uint32_t v_c32 = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_appn;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    do {
-+      if (a_marker == 224u) {
-+        if (self->private_impl.f_payload_length >= 5u) {
-+          self->private_impl.f_payload_length -= 5u;
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+            uint32_t t_0;
-+            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+              t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+              iop_a_src += 4;
-+            } else {
-+              self->private_data.s_decode_appn.scratch = 0;
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+              while (true) {
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint64_t* scratch = &self->private_data.s_decode_appn.scratch;
-+                uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
-+                *scratch <<= 8;
-+                *scratch >>= 8;
-+                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
-+                if (num_bits_0 == 24) {
-+                  t_0 = ((uint32_t)(*scratch));
-+                  break;
-+                }
-+                num_bits_0 += 8u;
-+                *scratch |= ((uint64_t)(num_bits_0)) << 56;
-+              }
-+            }
-+            v_c32 = t_0;
-+          }
-+          if (v_c32 != 1179207242u) {
-+            self->private_impl.f_payload_length = (65535u & (self->private_impl.f_payload_length + 1u));
-+            break;
-+          }
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint8_t t_1 = *iop_a_src++;
-+            v_c8 = t_1;
-+          }
-+          self->private_impl.f_is_jfif = (v_c8 == 0u);
-+        }
-+      } else if (a_marker == 238u) {
-+        if (self->private_impl.f_payload_length >= 12u) {
-+          self->private_impl.f_payload_length -= 12u;
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+            uint32_t t_2;
-+            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+              t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+              iop_a_src += 4;
-+            } else {
-+              self->private_data.s_decode_appn.scratch = 0;
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+              while (true) {
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint64_t* scratch = &self->private_data.s_decode_appn.scratch;
-+                uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
-+                *scratch <<= 8;
-+                *scratch >>= 8;
-+                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
-+                if (num_bits_2 == 24) {
-+                  t_2 = ((uint32_t)(*scratch));
-+                  break;
-+                }
-+                num_bits_2 += 8u;
-+                *scratch |= ((uint64_t)(num_bits_2)) << 56;
-+              }
-+            }
-+            v_c32 = t_2;
-+          }
-+          if (v_c32 != 1651467329u) {
-+            self->private_impl.f_payload_length = (65535u & (self->private_impl.f_payload_length + 8u));
-+            break;
-+          }
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+            uint32_t t_3;
-+            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+              t_3 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+              iop_a_src += 4;
-+            } else {
-+              self->private_data.s_decode_appn.scratch = 0;
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+              while (true) {
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint64_t* scratch = &self->private_data.s_decode_appn.scratch;
-+                uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
-+                *scratch <<= 8;
-+                *scratch >>= 8;
-+                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
-+                if (num_bits_3 == 24) {
-+                  t_3 = ((uint32_t)(*scratch));
-+                  break;
-+                }
-+                num_bits_3 += 8u;
-+                *scratch |= ((uint64_t)(num_bits_3)) << 56;
-+              }
-+            }
-+            v_c32 = t_3;
-+          }
-+          if ((255u & v_c32) != 101u) {
-+            self->private_impl.f_payload_length = (65535u & (self->private_impl.f_payload_length + 4u));
-+            break;
-+          }
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+            uint32_t t_4;
-+            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+              t_4 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+              iop_a_src += 4;
-+            } else {
-+              self->private_data.s_decode_appn.scratch = 0;
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+              while (true) {
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint64_t* scratch = &self->private_data.s_decode_appn.scratch;
-+                uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
-+                *scratch <<= 8;
-+                *scratch >>= 8;
-+                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
-+                if (num_bits_4 == 24) {
-+                  t_4 = ((uint32_t)(*scratch));
-+                  break;
-+                }
-+                num_bits_4 += 8u;
-+                *scratch |= ((uint64_t)(num_bits_4)) << 56;
-+              }
-+            }
-+            v_c32 = t_4;
-+          }
-+          if ((v_c32 >> 24u) == 0u) {
-+            self->private_impl.f_is_adobe = 1u;
-+          } else {
-+            self->private_impl.f_is_adobe = 2u;
-+          }
-+        }
-+      }
-+    } while (0);
-+    self->private_data.s_decode_appn.scratch = self->private_impl.f_payload_length;
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
-+    if (self->private_data.s_decode_appn.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+      self->private_data.s_decode_appn.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+      iop_a_src = io2_a_src;
-+      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+      goto suspend;
-+    }
-+    iop_a_src += self->private_data.s_decode_appn.scratch;
-+    self->private_impl.f_payload_length = 0u;
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_decode_appn = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_appn = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func jpeg.decoder.decode_sof
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_jpeg__decoder__decode_sof(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_c8 = 0;
-+  uint8_t v_comp_h = 0;
-+  uint8_t v_comp_v = 0;
-+  uint32_t v_i = 0;
-+  uint32_t v_j = 0;
-+  bool v_has_h24 = false;
-+  bool v_has_h3 = false;
-+  bool v_has_v24 = false;
-+  bool v_has_v3 = false;
-+  uint32_t v_upper_bound = 0;
-+  uint64_t v_wh0 = 0;
-+  uint64_t v_wh1 = 0;
-+  uint64_t v_wh2 = 0;
-+  uint64_t v_wh3 = 0;
-+  uint64_t v_progressive = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_sof;
-+  if (coro_susp_point) {
-+    v_i = self->private_data.s_decode_sof.v_i;
-+  }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_payload_length < 6u) {
-+      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
-+      goto exit;
-+    }
-+    self->private_impl.f_payload_length -= 6u;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_0 = *iop_a_src++;
-+      v_c8 = t_0;
-+    }
-+    if (v_c8 == 8u) {
-+    } else if (v_c8 == 12u) {
-+      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision_12_bits);
-+      goto exit;
-+    } else if (v_c8 == 16u) {
-+      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision_16_bits);
-+      goto exit;
-+    } else {
-+      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision);
-+      goto exit;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+      uint32_t t_1;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+        t_1 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
-+        iop_a_src += 2;
-+      } else {
-+        self->private_data.s_decode_sof.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_sof.scratch;
-+          uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
-+          *scratch >>= 8;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
-+          if (num_bits_1 == 8) {
-+            t_1 = ((uint32_t)(*scratch >> 48));
-+            break;
-+          }
-+          num_bits_1 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_1));
-+        }
-+      }
-+      self->private_impl.f_height = t_1;
-+    }
-+    if (self->private_impl.f_height == 0u) {
-+      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_implicit_height);
-+      goto exit;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+      uint32_t t_2;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+        t_2 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
-+        iop_a_src += 2;
-+      } else {
-+        self->private_data.s_decode_sof.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_sof.scratch;
-+          uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu));
-+          *scratch >>= 8;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
-+          if (num_bits_2 == 8) {
-+            t_2 = ((uint32_t)(*scratch >> 48));
-+            break;
-+          }
-+          num_bits_2 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_2));
-+        }
-+      }
-+      self->private_impl.f_width = t_2;
-+    }
-+    if (self->private_impl.f_width == 0u) {
-+      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
-+      goto exit;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_3 = *iop_a_src++;
-+      v_c8 = t_3;
-+    }
-+    if ((v_c8 == 0u) || (v_c8 > 4u)) {
-+      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
-+      goto exit;
-+    } else if (v_c8 == 2u) {
-+      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_color_model);
-+      goto exit;
-+    }
-+    self->private_impl.f_num_components = ((uint32_t)(v_c8));
-+    if (self->private_impl.f_payload_length != (3u * self->private_impl.f_num_components)) {
-+      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
-+      goto exit;
-+    }
-+    self->private_impl.f_payload_length = 0u;
-+    v_i = 0u;
-+    while (v_i < self->private_impl.f_num_components) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_4 = *iop_a_src++;
-+        self->private_impl.f_components_c[v_i] = t_4;
-+      }
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_5 = *iop_a_src++;
-+        v_c8 = t_5;
-+      }
-+      v_comp_h = ((uint8_t)(v_c8 >> 4u));
-+      v_comp_v = ((uint8_t)(v_c8 & 15u));
-+      if ((v_comp_h == 0u) ||
-+          (v_comp_h > 4u) ||
-+          (v_comp_v == 0u) ||
-+          (v_comp_v > 4u)) {
-+        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
-+        goto exit;
-+      }
-+      self->private_impl.f_components_h[v_i] = v_comp_h;
-+      if (self->private_impl.f_max_incl_components_h < self->private_impl.f_components_h[v_i]) {
-+        self->private_impl.f_max_incl_components_h = self->private_impl.f_components_h[v_i];
-+      }
-+      self->private_impl.f_components_v[v_i] = v_comp_v;
-+      if (self->private_impl.f_max_incl_components_v < self->private_impl.f_components_v[v_i]) {
-+        self->private_impl.f_max_incl_components_v = self->private_impl.f_components_v[v_i];
-+      }
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_6 = *iop_a_src++;
-+        v_c8 = t_6;
-+      }
-+      if (v_c8 >= 4u) {
-+        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
-+        goto exit;
-+      }
-+      self->private_impl.f_components_tq[v_i] = v_c8;
-+      v_j = 0u;
-+      while (v_j < v_i) {
-+        if (self->private_impl.f_components_c[v_j] == self->private_impl.f_components_c[v_i]) {
-+          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
-+          goto exit;
-+        }
-+        v_j += 1u;
-+      }
-+      v_i += 1u;
-+    }
-+    if (self->private_impl.f_num_components == 1u) {
-+      self->private_impl.f_max_incl_components_h = 1u;
-+      self->private_impl.f_max_incl_components_v = 1u;
-+      self->private_impl.f_components_h[0u] = 1u;
-+      self->private_impl.f_components_v[0u] = 1u;
-+    } else {
-+      v_has_h24 = false;
-+      v_has_h3 = false;
-+      v_has_v24 = false;
-+      v_has_v3 = false;
-+      v_i = 0u;
-+      while (v_i < self->private_impl.f_num_components) {
-+        v_has_h24 = (v_has_h24 || (self->private_impl.f_components_h[v_i] == 2u) || (self->private_impl.f_components_h[v_i] == 4u));
-+        v_has_h3 = (v_has_h3 || (self->private_impl.f_components_h[v_i] == 3u));
-+        v_has_v24 = (v_has_v24 || (self->private_impl.f_components_v[v_i] == 2u) || (self->private_impl.f_components_v[v_i] == 4u));
-+        v_has_v3 = (v_has_v3 || (self->private_impl.f_components_v[v_i] == 3u));
-+        v_i += 1u;
-+      }
-+      if ((v_has_h24 && v_has_h3) || (v_has_v24 && v_has_v3)) {
-+        status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_fractional_sampling);
-+        goto exit;
-+      }
-+      if (self->private_impl.f_num_components == 4u) {
-+        self->private_impl.f_is_rgb_or_cmyk = (self->private_impl.f_is_adobe < 2u);
-+      } else {
-+        if (self->private_impl.f_is_jfif) {
-+          self->private_impl.f_is_rgb_or_cmyk = false;
-+        } else if (self->private_impl.f_is_adobe > 0u) {
-+          self->private_impl.f_is_rgb_or_cmyk = (self->private_impl.f_is_adobe == 1u);
-+        } else {
-+          self->private_impl.f_is_rgb_or_cmyk = ((self->private_impl.f_components_c[0u] == 82u) && (self->private_impl.f_components_c[1u] == 71u) && (self->private_impl.f_components_c[2u] == 66u));
-+        }
-+      }
-+    }
-+    self->private_impl.f_width_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_width, 1u, self->private_impl.f_max_incl_components_h);
-+    self->private_impl.f_height_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_height, 1u, self->private_impl.f_max_incl_components_v);
-+    v_upper_bound = 65544u;
-+    self->private_impl.f_components_workbuf_widths[0u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[0u]))));
-+    self->private_impl.f_components_workbuf_widths[1u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[1u]))));
-+    self->private_impl.f_components_workbuf_widths[2u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[2u]))));
-+    self->private_impl.f_components_workbuf_widths[3u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[3u]))));
-+    self->private_impl.f_components_workbuf_heights[0u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[0u]))));
-+    self->private_impl.f_components_workbuf_heights[1u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[1u]))));
-+    self->private_impl.f_components_workbuf_heights[2u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[2u]))));
-+    self->private_impl.f_components_workbuf_heights[3u] = wuffs_base__u32__min(v_upper_bound, (8u * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[3u]))));
-+    v_wh0 = (((uint64_t)(self->private_impl.f_components_workbuf_widths[0u])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[0u])));
-+    v_wh1 = (((uint64_t)(self->private_impl.f_components_workbuf_widths[1u])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[1u])));
-+    v_wh2 = (((uint64_t)(self->private_impl.f_components_workbuf_widths[2u])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[2u])));
-+    v_wh3 = (((uint64_t)(self->private_impl.f_components_workbuf_widths[3u])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[3u])));
-+    v_progressive = 0u;
-+    if (self->private_impl.f_sof_marker >= 194u) {
-+      v_progressive = 2u;
-+      v_i = 0u;
-+      while (v_i < 4u) {
-+        v_j = 0u;
-+        while (v_j < 10u) {
-+          self->private_impl.f_block_smoothing_lowest_scan_al[v_i][v_j] = 16u;
-+          v_j += 1u;
-+        }
-+        v_i += 1u;
-+      }
-+    }
-+    self->private_impl.f_components_workbuf_offsets[0u] = 0u;
-+    self->private_impl.f_components_workbuf_offsets[1u] = (self->private_impl.f_components_workbuf_offsets[0u] + v_wh0);
-+    self->private_impl.f_components_workbuf_offsets[2u] = (self->private_impl.f_components_workbuf_offsets[1u] + v_wh1);
-+    self->private_impl.f_components_workbuf_offsets[3u] = (self->private_impl.f_components_workbuf_offsets[2u] + v_wh2);
-+    self->private_impl.f_components_workbuf_offsets[4u] = (self->private_impl.f_components_workbuf_offsets[3u] + v_wh3);
-+    self->private_impl.f_components_workbuf_offsets[5u] = (self->private_impl.f_components_workbuf_offsets[4u] + (v_wh0 * v_progressive));
-+    self->private_impl.f_components_workbuf_offsets[6u] = (self->private_impl.f_components_workbuf_offsets[5u] + (v_wh1 * v_progressive));
-+    self->private_impl.f_components_workbuf_offsets[7u] = (self->private_impl.f_components_workbuf_offsets[6u] + (v_wh2 * v_progressive));
-+    self->private_impl.f_components_workbuf_offsets[8u] = (self->private_impl.f_components_workbuf_offsets[7u] + (v_wh3 * v_progressive));
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_decode_sof = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_sof = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_sof.v_i = v_i;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func jpeg.decoder.quantize_dimension
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint32_t
-+wuffs_jpeg__decoder__quantize_dimension(
-+    const wuffs_jpeg__decoder* self,
-+    uint32_t a_width,
-+    uint8_t a_h,
-+    uint8_t a_max_incl_h) {
-+  uint32_t v_ratio = 0;
-+
-+  v_ratio = 0u;
-+  if (a_h > 0u) {
-+    v_ratio = ((uint32_t)(((uint8_t)(a_max_incl_h / a_h))));
-+  }
-+  if (v_ratio == 1u) {
-+    return ((a_width + 7u) / 8u);
-+  } else if (v_ratio == 2u) {
-+    return ((a_width + 15u) / 16u);
-+  } else if (v_ratio == 3u) {
-+    return ((a_width + 23u) / 24u);
-+  }
-+  return ((a_width + 31u) / 32u);
-+}
-+
-+// -------- func jpeg.decoder.decode_frame_config
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_jpeg__decoder__decode_frame_config(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 2)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_jpeg__decoder__do_decode_frame_config(self, a_dst, a_src);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_jpeg__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+
-+    ok:
-+    self->private_impl.p_decode_frame_config = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func jpeg.decoder.do_decode_frame_config
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_jpeg__decoder__do_decode_frame_config(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_call_sequence == 32u) {
-+    } else if (self->private_impl.f_call_sequence < 32u) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      status = wuffs_jpeg__decoder__do_decode_image_config(self, NULL, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+    } else if (self->private_impl.f_call_sequence == 40u) {
-+      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
-+        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
-+        goto exit;
-+      }
-+    } else if (self->private_impl.f_call_sequence == 64u) {
-+      self->private_impl.f_call_sequence = 96u;
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-+    } else {
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-+    }
-+    if (a_dst != NULL) {
-+      wuffs_base__frame_config__set(
-+          a_dst,
-+          wuffs_base__utility__make_rect_ie_u32(
-+          0u,
-+          0u,
-+          self->private_impl.f_width,
-+          self->private_impl.f_height),
-+          ((wuffs_base__flicks)(0u)),
-+          0u,
-+          self->private_impl.f_frame_config_io_position,
-+          0u,
-+          true,
-+          false,
-+          4278190080u);
-+    }
-+    self->private_impl.f_call_sequence = 64u;
-+
-+    ok:
-+    self->private_impl.p_do_decode_frame_config = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func jpeg.decoder.decode_frame
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_jpeg__decoder__decode_frame(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_dst || !a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 3)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__status v_ddf_status = wuffs_base__make_status(NULL);
-+  wuffs_base__status v_swizzle_status = wuffs_base__make_status(NULL);
-+  uint32_t v_scan_count = 0;
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_frame;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      v_scan_count = self->private_impl.f_scan_count;
-+      {
-+        wuffs_base__status t_0 = wuffs_jpeg__decoder__do_decode_frame(self,
-+            a_dst,
-+            a_src,
-+            a_blend,
-+            a_workbuf,
-+            a_opts);
-+        v_ddf_status = t_0;
-+      }
-+      if ((v_ddf_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        v_ddf_status = wuffs_base__make_status(wuffs_jpeg__error__truncated_input);
-+      }
-+      if ( ! self->private_impl.f_swizzle_immediately && (wuffs_base__status__is_error(&v_ddf_status) || (v_scan_count < self->private_impl.f_scan_count))) {
-+        if (self->private_impl.f_sof_marker >= 194u) {
-+          wuffs_jpeg__decoder__apply_progressive_idct(self, a_workbuf);
-+        }
-+        if (self->private_impl.f_num_components == 1u) {
-+          v_swizzle_status = wuffs_jpeg__decoder__swizzle_gray(self,
-+              a_dst,
-+              a_workbuf,
-+              0u,
-+              4294967295u,
-+              0u,
-+              4294967295u,
-+              ((uint64_t)(self->private_impl.f_components_workbuf_widths[0u])));
-+        } else {
-+          v_swizzle_status = wuffs_jpeg__decoder__swizzle_colorful(self,
-+              a_dst,
-+              a_workbuf,
-+              0u,
-+              4294967295u,
-+              0u,
-+              4294967295u);
-+        }
-+        if (wuffs_base__status__is_error(&v_ddf_status)) {
-+          status = v_ddf_status;
-+          goto exit;
-+        } else if (wuffs_base__status__is_error(&v_swizzle_status)) {
-+          status = v_swizzle_status;
-+          goto exit;
-+        }
-+      }
-+      status = v_ddf_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+
-+    ok:
-+    self->private_impl.p_decode_frame = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func jpeg.decoder.do_decode_frame
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_jpeg__decoder__do_decode_frame(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint32_t v_pixfmt = 0;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+  uint8_t v_c8 = 0;
-+  uint8_t v_marker = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame;
-+  if (coro_susp_point) {
-+    v_marker = self->private_data.s_do_decode_frame.v_marker;
-+  }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_call_sequence == 64u) {
-+    } else if (self->private_impl.f_call_sequence < 64u) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      status = wuffs_jpeg__decoder__do_decode_frame_config(self, NULL, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+    } else {
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-+    }
-+    v_pixfmt = 536870920u;
-+    if (self->private_impl.f_num_components > 1u) {
-+      v_pixfmt = 2415954056u;
-+    }
-+    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
-+        wuffs_base__pixel_buffer__pixel_format(a_dst),
-+        wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
-+        wuffs_base__utility__make_pixel_format(v_pixfmt),
-+        wuffs_base__utility__empty_slice_u8(),
-+        a_blend);
-+    if ( ! wuffs_base__status__is_ok(&v_status)) {
-+      status = v_status;
-+      if (wuffs_base__status__is_error(&status)) {
-+        goto exit;
-+      } else if (wuffs_base__status__is_suspension(&status)) {
-+        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+        goto exit;
-+      }
-+      goto ok;
-+    }
-+    self->private_impl.f_swizzle_immediately = false;
-+    if (self->private_impl.f_components_workbuf_offsets[8u] > ((uint64_t)(a_workbuf.len))) {
-+      if (self->private_impl.f_sof_marker >= 194u) {
-+        status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
-+        goto exit;
-+      }
-+      self->private_impl.f_swizzle_immediately = self->private_impl.f_use_lower_quality;
-+      self->private_impl.f_swizzle_immediately_status = wuffs_base__make_status(NULL);
-+    } else if (self->private_impl.f_components_workbuf_offsets[4u] < self->private_impl.f_components_workbuf_offsets[8u]) {
-+      wuffs_private_impl__bulk_memset(a_workbuf.ptr + self->private_impl.f_components_workbuf_offsets[4u], (self->private_impl.f_components_workbuf_offsets[8u] - self->private_impl.f_components_workbuf_offsets[4u]), 0u);
-+    }
-+    if (self->private_impl.f_components_workbuf_offsets[4u] <= ((uint64_t)(a_workbuf.len))) {
-+      wuffs_private_impl__bulk_memset(a_workbuf.ptr, self->private_impl.f_components_workbuf_offsets[4u], 128u);
-+    }
-+    while (true) {
-+      while (true) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_0 = *iop_a_src++;
-+          v_c8 = t_0;
-+        }
-+        if (v_c8 == 255u) {
-+          break;
-+        }
-+      }
-+      while (true) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_1 = *iop_a_src++;
-+          v_c8 = t_1;
-+        }
-+        if (v_c8 != 255u) {
-+          v_marker = v_c8;
-+          break;
-+        }
-+      }
-+      if (v_marker == 0u) {
-+        continue;
-+      } else if ((208u <= v_marker) && (v_marker <= 217u)) {
-+        if (v_marker <= 215u) {
-+          continue;
-+        }
-+      } else {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+          uint32_t t_2;
-+          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+            t_2 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
-+            iop_a_src += 2;
-+          } else {
-+            self->private_data.s_do_decode_frame.scratch = 0;
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+            while (true) {
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint64_t* scratch = &self->private_data.s_do_decode_frame.scratch;
-+              uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu));
-+              *scratch >>= 8;
-+              *scratch <<= 8;
-+              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
-+              if (num_bits_2 == 8) {
-+                t_2 = ((uint32_t)(*scratch >> 48));
-+                break;
-+              }
-+              num_bits_2 += 8u;
-+              *scratch |= ((uint64_t)(num_bits_2));
-+            }
-+          }
-+          self->private_impl.f_payload_length = t_2;
-+        }
-+        if (self->private_impl.f_payload_length < 2u) {
-+          status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker);
-+          goto exit;
-+        }
-+        self->private_impl.f_payload_length -= 2u;
-+      }
-+      if (v_marker < 192u) {
-+        status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
-+        goto exit;
-+      } else if (v_marker < 208u) {
-+        if (v_marker == 196u) {
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+          status = wuffs_jpeg__decoder__decode_dht(self, a_src);
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+          if (status.repr) {
-+            goto suspend;
-+          }
-+          continue;
-+        } else if (v_marker == 200u) {
-+          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
-+          goto exit;
-+        }
-+        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker);
-+        goto exit;
-+      } else if (v_marker < 224u) {
-+        if (v_marker < 217u) {
-+          status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker);
-+          goto exit;
-+        } else if (v_marker == 217u) {
-+          break;
-+        } else if (v_marker == 218u) {
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+          status = wuffs_jpeg__decoder__decode_sos(self, a_dst, a_src, a_workbuf);
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+          if (status.repr) {
-+            goto suspend;
-+          }
-+          continue;
-+        } else if (v_marker == 219u) {
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+          status = wuffs_jpeg__decoder__decode_dqt(self, a_src);
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+          if (status.repr) {
-+            goto suspend;
-+          }
-+          continue;
-+        } else if (v_marker == 221u) {
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+          status = wuffs_jpeg__decoder__decode_dri(self, a_src);
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+          if (status.repr) {
-+            goto suspend;
-+          }
-+          continue;
-+        } else {
-+          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
-+          goto exit;
-+        }
-+      } else if (v_marker < 240u) {
-+      } else {
-+        if (v_marker == 254u) {
-+        } else {
-+          status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker);
-+          goto exit;
-+        }
-+      }
-+      self->private_data.s_do_decode_frame.scratch = self->private_impl.f_payload_length;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
-+      if (self->private_data.s_do_decode_frame.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+        self->private_data.s_do_decode_frame.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+        iop_a_src = io2_a_src;
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      iop_a_src += self->private_data.s_do_decode_frame.scratch;
-+      self->private_impl.f_payload_length = 0u;
-+    }
-+    self->private_impl.f_call_sequence = 96u;
-+
-+    ok:
-+    self->private_impl.p_do_decode_frame = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_do_decode_frame.v_marker = v_marker;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func jpeg.decoder.decode_dht
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_jpeg__decoder__decode_dht(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_c8 = 0;
-+  uint8_t v_tc = 0;
-+  uint8_t v_th = 0;
-+  uint8_t v_tc4_th = 0;
-+  uint32_t v_working_total_count = 0;
-+  uint32_t v_total_count = 0;
-+  uint32_t v_i = 0;
-+  bool v_failed = false;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_dht;
-+  if (coro_susp_point) {
-+    v_tc4_th = self->private_data.s_decode_dht.v_tc4_th;
-+    v_total_count = self->private_data.s_decode_dht.v_total_count;
-+    v_i = self->private_data.s_decode_dht.v_i;
-+  }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_sof_marker == 0u) {
-+      status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
-+      goto exit;
-+    }
-+    while (self->private_impl.f_payload_length > 0u) {
-+      if (self->private_impl.f_payload_length < 17u) {
-+        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
-+        goto exit;
-+      }
-+      self->private_impl.f_payload_length -= 17u;
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_0 = *iop_a_src++;
-+        v_c8 = t_0;
-+      }
-+      if ((((uint8_t)(v_c8 >> 4u)) > 1u) || (((uint8_t)(v_c8 & 15u)) > 3u)) {
-+        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
-+        goto exit;
-+      }
-+      v_tc = ((uint8_t)(v_c8 >> 4u));
-+      v_th = ((uint8_t)(v_c8 & 15u));
-+      v_tc4_th = ((uint8_t)(((uint8_t)(((uint8_t)(v_tc * 4u)) | v_th))));
-+      if ((self->private_impl.f_sof_marker == 192u) && (((uint8_t)(v_tc4_th & 3u)) > 1u)) {
-+        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
-+        goto exit;
-+      }
-+      v_i = 0u;
-+      while (v_i < 16u) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_1 = *iop_a_src++;
-+          self->private_data.f_dht_temp_counts[v_i] = t_1;
-+        }
-+        v_i += 1u;
-+      }
-+      v_working_total_count = 0u;
-+      v_i = 0u;
-+      while (v_i < 16u) {
-+        v_working_total_count = ((v_working_total_count + ((uint32_t)(self->private_data.f_dht_temp_counts[v_i]))) & 65535u);
-+        v_i += 1u;
-+      }
-+      if ((v_working_total_count <= 0u) || (256u < v_working_total_count)) {
-+        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
-+        goto exit;
-+      }
-+      v_total_count = v_working_total_count;
-+      if (self->private_impl.f_payload_length < v_total_count) {
-+        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
-+        goto exit;
-+      }
-+      self->private_impl.f_payload_length -= v_total_count;
-+      v_i = 0u;
-+      while (v_i < v_total_count) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_2 = *iop_a_src++;
-+          self->private_impl.f_huff_tables_symbols[v_tc4_th][v_i] = t_2;
-+        }
-+        v_i += 1u;
-+      }
-+      while (v_i < 256u) {
-+        self->private_impl.f_huff_tables_symbols[v_tc4_th][v_i] = 0u;
-+        v_i += 1u;
-+      }
-+      if (((uint8_t)(v_tc4_th & 4u)) == 0u) {
-+        v_i = 0u;
-+        while (v_i < v_total_count) {
-+          if (self->private_impl.f_huff_tables_symbols[v_tc4_th][v_i] > 15u) {
-+            status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
-+            goto exit;
-+          }
-+          v_i += 1u;
-+        }
-+      }
-+      v_failed = wuffs_jpeg__decoder__calculate_huff_tables(self, v_tc4_th, v_total_count);
-+      if (v_failed) {
-+        status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker);
-+        goto exit;
-+      }
-+      self->private_impl.f_seen_dht[v_tc4_th] = true;
-+    }
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_decode_dht = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_dht = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_dht.v_tc4_th = v_tc4_th;
-+  self->private_data.s_decode_dht.v_total_count = v_total_count;
-+  self->private_data.s_decode_dht.v_i = v_i;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func jpeg.decoder.calculate_huff_tables
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static bool
-+wuffs_jpeg__decoder__calculate_huff_tables(
-+    wuffs_jpeg__decoder* self,
-+    uint8_t a_tc4_th,
-+    uint32_t a_total_count) {
-+  uint32_t v_i = 0;
-+  uint8_t v_j = 0;
-+  uint8_t v_k = 0;
-+  uint32_t v_bit_length_minus_one = 0;
-+  uint8_t v_bit_length = 0;
-+  uint32_t v_bit_string = 0;
-+  uint32_t v_slow = 0;
-+  uint8_t v_prefix = 0;
-+  uint16_t v_fast = 0;
-+  uint32_t v_reps = 0;
-+
-+  v_i = 0u;
-+  v_k = 0u;
-+  v_bit_length_minus_one = 0u;
-+  while (v_i < a_total_count) {
-+    while (v_k >= self->private_data.f_dht_temp_counts[v_bit_length_minus_one]) {
-+      v_k = 0u;
-+      v_bit_length_minus_one = ((v_bit_length_minus_one + 1u) & 15u);
-+    }
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+    v_k += 1u;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+    self->private_data.f_dht_temp_bit_lengths[v_i] = ((uint8_t)((v_bit_length_minus_one + 1u)));
-+    v_i += 1u;
-+  }
-+  v_bit_length = 0u;
-+  v_bit_string = 0u;
-+  v_i = 0u;
-+  while (v_i < a_total_count) {
-+    while (v_bit_length < self->private_data.f_dht_temp_bit_lengths[v_i]) {
-+      if (v_bit_length >= 16u) {
-+        return true;
-+      }
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+      v_bit_length += 1u;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+      v_bit_string <<= 1u;
-+    }
-+    self->private_data.f_dht_temp_bit_strings[v_i] = ((uint16_t)(v_bit_string));
-+    v_bit_string += 1u;
-+    if ((v_bit_string >> v_bit_length) > 0u) {
-+      return true;
-+    }
-+    v_i += 1u;
-+  }
-+  v_k = 0u;
-+  v_bit_length_minus_one = 0u;
-+  while (true) {
-+    if (self->private_data.f_dht_temp_counts[v_bit_length_minus_one] == 0u) {
-+      self->private_impl.f_huff_tables_slow[a_tc4_th][v_bit_length_minus_one] = 0u;
-+    } else {
-+      v_slow = (255u & ((uint32_t)(((uint32_t)(v_k)) - ((uint32_t)(self->private_data.f_dht_temp_bit_strings[v_k])))));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+      v_k += self->private_data.f_dht_temp_counts[v_bit_length_minus_one];
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+      self->private_impl.f_huff_tables_slow[a_tc4_th][v_bit_length_minus_one] = (v_slow | ((((uint32_t)(self->private_data.f_dht_temp_bit_strings[((uint8_t)(v_k - 1u))])) + 1u) << 8u));
-+    }
-+    v_bit_length_minus_one = ((v_bit_length_minus_one + 1u) & 15u);
-+    if (v_bit_length_minus_one == 0u) {
-+      break;
-+    }
-+  }
-+  v_i = 0u;
-+  while (v_i < 256u) {
-+    self->private_impl.f_huff_tables_fast[a_tc4_th][v_i] = 65535u;
-+    v_i += 1u;
-+  }
-+  v_j = 0u;
-+  v_bit_length_minus_one = 0u;
-+  while (v_bit_length_minus_one < 8u) {
-+    v_k = 0u;
-+    while (v_k < self->private_data.f_dht_temp_counts[v_bit_length_minus_one]) {
-+      v_prefix = ((uint8_t)((((uint32_t)(self->private_data.f_dht_temp_bit_strings[v_j])) << (7u - v_bit_length_minus_one))));
-+      v_fast = ((uint16_t)(((((uint32_t)((v_bit_length_minus_one + 1u))) << 8u) | ((uint32_t)(self->private_impl.f_huff_tables_symbols[a_tc4_th][v_j])))));
-+      v_reps = (((uint32_t)(1u)) << (7u - v_bit_length_minus_one));
-+      while (v_reps > 0u) {
-+        self->private_impl.f_huff_tables_fast[a_tc4_th][v_prefix] = v_fast;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        v_prefix += 1u;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+        v_reps -= 1u;
-+      }
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+      v_k += 1u;
-+      v_j += 1u;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+    }
-+    v_bit_length_minus_one += 1u;
-+  }
-+  return false;
-+}
-+
-+// -------- func jpeg.decoder.decode_sos
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_jpeg__decoder__decode_sos(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint32_t v_my = 0;
-+  uint32_t v_mx = 0;
-+  uint32_t v_decode_mcu_result = 0;
-+  uint32_t v_bitstream_length = 0;
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_sos;
-+  if (coro_susp_point) {
-+    v_my = self->private_data.s_decode_sos.v_my;
-+    v_mx = self->private_data.s_decode_sos.v_mx;
-+  }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_scan_count >= 32u) {
-+      status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_scan_count);
-+      goto exit;
-+    } else if ((self->private_impl.f_scan_count > 0u) &&  ! self->private_impl.f_expect_multiple_scans) {
-+      status = wuffs_base__make_status(wuffs_jpeg__error__bad_scan_count);
-+      goto exit;
-+    }
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+    status = wuffs_jpeg__decoder__prepare_scan(self, a_src);
-+    if (status.repr) {
-+      goto suspend;
-+    }
-+    self->private_impl.f_next_restart_marker = 0u;
-+    self->private_impl.f_mcu_previous_dc_values[0u] = 0u;
-+    self->private_impl.f_mcu_previous_dc_values[1u] = 0u;
-+    self->private_impl.f_mcu_previous_dc_values[2u] = 0u;
-+    self->private_impl.f_mcu_previous_dc_values[3u] = 0u;
-+    self->private_impl.f_restarts_remaining = self->private_impl.f_restart_interval;
-+    self->private_impl.f_eob_run = 0u;
-+    self->private_impl.f_bitstream_bits = 0u;
-+    self->private_impl.f_bitstream_n_bits = 0u;
-+    self->private_impl.f_bitstream_ri = 0u;
-+    self->private_impl.f_bitstream_wi = 0u;
-+    self->private_impl.f_bitstream_padding = 12345u;
-+    wuffs_jpeg__decoder__fill_bitstream(self, a_src);
-+    v_my = 0u;
-+    while (v_my < self->private_impl.f_scan_height_in_mcus) {
-+      v_mx = 0u;
-+      while (v_mx < self->private_impl.f_scan_width_in_mcus) {
-+        self->private_impl.f_mcu_current_block = 0u;
-+        self->private_impl.f_mcu_zig_index = ((uint32_t)(self->private_impl.f_scan_ss));
-+        if (self->private_impl.f_sof_marker >= 194u) {
-+          wuffs_jpeg__decoder__load_mcu_blocks(self, v_mx, v_my, a_workbuf);
-+        }
-+        while (true) {
-+          v_decode_mcu_result = wuffs_jpeg__decoder__decode_mcu(self,
-+              a_dst,
-+              a_workbuf,
-+              v_mx,
-+              v_my);
-+          if (v_decode_mcu_result == 0u) {
-+            break;
-+          } else if (v_decode_mcu_result == 1u) {
-+          } else if (v_decode_mcu_result == 2u) {
-+            status = wuffs_base__make_status(wuffs_jpeg__error__internal_error_inconsistent_decoder_state);
-+            goto exit;
-+          } else {
-+            status = self->private_impl.f_swizzle_immediately_status;
-+            if (wuffs_base__status__is_error(&status)) {
-+              goto exit;
-+            } else if (wuffs_base__status__is_suspension(&status)) {
-+              status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+              goto exit;
-+            }
-+            goto ok;
-+          }
-+          while (true) {
-+            v_bitstream_length = ((uint32_t)(self->private_impl.f_bitstream_wi - self->private_impl.f_bitstream_ri));
-+            wuffs_jpeg__decoder__fill_bitstream(self, a_src);
-+            if (v_bitstream_length < ((uint32_t)(self->private_impl.f_bitstream_wi - self->private_impl.f_bitstream_ri))) {
-+              break;
-+            } else if (self->private_impl.f_bitstream_padding == 0u) {
-+              status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
-+              goto exit;
-+            } else if ((a_src && a_src->meta.closed) &&  ! self->private_impl.f_bitstream_is_closed) {
-+              if (self->private_impl.f_bitstream_wi < 1024u) {
-+                wuffs_private_impl__bulk_memset(&self->private_data.f_bitstream_buffer[self->private_impl.f_bitstream_wi], 264u, 0u);
-+                self->private_impl.f_bitstream_wi += 264u;
-+                self->private_impl.f_bitstream_is_closed = true;
-+              }
-+              break;
-+            }
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
-+          }
-+        }
-+        if (self->private_impl.f_sof_marker >= 194u) {
-+          wuffs_jpeg__decoder__save_mcu_blocks(self, v_mx, v_my, a_workbuf);
-+        }
-+        if (self->private_impl.f_restarts_remaining > 0u) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+          self->private_impl.f_restarts_remaining -= 1u;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+          if (self->private_impl.f_restarts_remaining == 0u) {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+            status = wuffs_jpeg__decoder__skip_past_the_next_restart_marker(self, a_src);
-+            if (status.repr) {
-+              goto suspend;
-+            }
-+            self->private_impl.f_mcu_previous_dc_values[0u] = 0u;
-+            self->private_impl.f_mcu_previous_dc_values[1u] = 0u;
-+            self->private_impl.f_mcu_previous_dc_values[2u] = 0u;
-+            self->private_impl.f_mcu_previous_dc_values[3u] = 0u;
-+            self->private_impl.f_restarts_remaining = self->private_impl.f_restart_interval;
-+            self->private_impl.f_eob_run = 0u;
-+            self->private_impl.f_bitstream_bits = 0u;
-+            self->private_impl.f_bitstream_n_bits = 0u;
-+            self->private_impl.f_bitstream_ri = 0u;
-+            self->private_impl.f_bitstream_wi = 0u;
-+            self->private_impl.f_bitstream_padding = 12345u;
-+          }
-+        }
-+        v_mx += 1u;
-+      }
-+      v_my += 1u;
-+    }
-+    wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_scan_count, 1u);
-+
-+    ok:
-+    self->private_impl.p_decode_sos = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_sos = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_sos.v_my = v_my;
-+  self->private_data.s_decode_sos.v_mx = v_mx;
-+
-+  goto exit;
-+  exit:
-+  return status;
-+}
-+
-+// -------- func jpeg.decoder.prepare_scan
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_jpeg__decoder__prepare_scan(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_c8 = 0;
-+  uint32_t v_i = 0;
-+  uint32_t v_j = 0;
-+  uint32_t v_j_max_incl = 0;
-+  bool v_failed = false;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_prepare_scan;
-+  if (coro_susp_point) {
-+    v_i = self->private_data.s_prepare_scan.v_i;
-+  }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if ((self->private_impl.f_payload_length < 6u) || (self->private_impl.f_payload_length > 12u)) {
-+      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
-+      goto exit;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_0 = *iop_a_src++;
-+      v_c8 = t_0;
-+    }
-+    if ((v_c8 < 1u) || (v_c8 > 4u)) {
-+      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
-+      goto exit;
-+    }
-+    self->private_impl.f_scan_num_components = ((uint32_t)(v_c8));
-+    if ((self->private_impl.f_scan_num_components > self->private_impl.f_num_components) || (self->private_impl.f_payload_length != (4u + (2u * self->private_impl.f_scan_num_components)))) {
-+      status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
-+      goto exit;
-+    }
-+    self->private_impl.f_payload_length = 0u;
-+    v_i = 0u;
-+    while (v_i < self->private_impl.f_scan_num_components) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_1 = *iop_a_src++;
-+        v_c8 = t_1;
-+      }
-+      v_j = 0u;
-+      while (true) {
-+        if (v_j >= self->private_impl.f_num_components) {
-+          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
-+          goto exit;
-+        }
-+        if (v_c8 == self->private_impl.f_components_c[v_j]) {
-+          if ( ! self->private_impl.f_seen_dqt[self->private_impl.f_components_tq[v_j]]) {
-+            status = wuffs_base__make_status(wuffs_jpeg__error__missing_quantization_table);
-+            goto exit;
-+          }
-+          self->private_impl.f_scan_comps_cselector[v_i] = ((uint8_t)(v_j));
-+          break;
-+        }
-+        v_j += 1u;
-+      }
-+      v_j = 0u;
-+      while (v_j < v_i) {
-+        if (self->private_impl.f_scan_comps_cselector[v_i] == self->private_impl.f_scan_comps_cselector[v_j]) {
-+          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
-+          goto exit;
-+        }
-+        v_j += 1u;
-+      }
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_2 = *iop_a_src++;
-+        v_c8 = t_2;
-+      }
-+      if ((((uint8_t)(v_c8 >> 4u)) > 3u) || (((uint8_t)(v_c8 & 15u)) > 3u)) {
-+        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
-+        goto exit;
-+      }
-+      self->private_impl.f_scan_comps_td[v_i] = ((uint8_t)(v_c8 >> 4u));
-+      self->private_impl.f_scan_comps_ta[v_i] = ((uint8_t)(v_c8 & 15u));
-+      if (self->private_impl.f_sof_marker == 192u) {
-+        if ((self->private_impl.f_scan_comps_td[v_i] > 1u) || (self->private_impl.f_scan_comps_ta[v_i] > 1u)) {
-+          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
-+          goto exit;
-+        }
-+      }
-+      v_i += 1u;
-+    }
-+    if (self->private_impl.f_scan_count == 0u) {
-+      self->private_impl.f_expect_multiple_scans = ((self->private_impl.f_sof_marker >= 194u) || (self->private_impl.f_scan_num_components < self->private_impl.f_num_components));
-+    }
-+    if (self->private_impl.f_sof_marker < 194u) {
-+      self->private_data.s_prepare_scan.scratch = 3u;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+      if (self->private_data.s_prepare_scan.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+        self->private_data.s_prepare_scan.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+        iop_a_src = io2_a_src;
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      iop_a_src += self->private_data.s_prepare_scan.scratch;
-+      self->private_impl.f_scan_ss = 0u;
-+      self->private_impl.f_scan_se = 63u;
-+      self->private_impl.f_scan_ah = 0u;
-+      self->private_impl.f_scan_al = 0u;
-+    } else {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_3 = *iop_a_src++;
-+        v_c8 = t_3;
-+      }
-+      if (v_c8 > 63u) {
-+        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
-+        goto exit;
-+      }
-+      self->private_impl.f_scan_ss = v_c8;
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_4 = *iop_a_src++;
-+        v_c8 = t_4;
-+      }
-+      if ((v_c8 > 63u) || (v_c8 < self->private_impl.f_scan_ss)) {
-+        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
-+        goto exit;
-+      }
-+      self->private_impl.f_scan_se = v_c8;
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_5 = *iop_a_src++;
-+        v_c8 = t_5;
-+      }
-+      if ((((uint8_t)(v_c8 >> 4u)) > 14u) || (((uint8_t)(v_c8 & 15u)) > 13u)) {
-+        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
-+        goto exit;
-+      }
-+      self->private_impl.f_scan_ah = ((uint8_t)(v_c8 >> 4u));
-+      self->private_impl.f_scan_al = ((uint8_t)(v_c8 & 15u));
-+      if (self->private_impl.f_scan_ah > 0u) {
-+        if (((uint8_t)(self->private_impl.f_scan_ah - 1u)) != self->private_impl.f_scan_al) {
-+          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
-+          goto exit;
-+        }
-+      }
-+      if (self->private_impl.f_scan_ss == 0u) {
-+        if (self->private_impl.f_scan_se != 0u) {
-+          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
-+          goto exit;
-+        } else if (self->private_impl.f_scan_ah == 0u) {
-+          self->private_impl.choosy_decode_mcu = (
-+              &wuffs_jpeg__decoder__decode_mcu_progressive_dc_high_bits);
-+        } else {
-+          self->private_impl.choosy_decode_mcu = (
-+              &wuffs_jpeg__decoder__decode_mcu_progressive_dc_low_bit);
-+        }
-+      } else {
-+        if (self->private_impl.f_scan_num_components != 1u) {
-+          status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
-+          goto exit;
-+        } else if (self->private_impl.f_scan_ah == 0u) {
-+          self->private_impl.choosy_decode_mcu = (
-+              &wuffs_jpeg__decoder__decode_mcu_progressive_ac_high_bits);
-+        } else {
-+          self->private_impl.choosy_decode_mcu = (
-+              &wuffs_jpeg__decoder__decode_mcu_progressive_ac_low_bit);
-+        }
-+      }
-+    }
-+    v_i = 0u;
-+    while (v_i < self->private_impl.f_scan_num_components) {
-+      if ((self->private_impl.f_scan_ss == 0u) &&  ! self->private_impl.f_seen_dht[((uint8_t)(0u | self->private_impl.f_scan_comps_td[v_i]))]) {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+        status = wuffs_jpeg__decoder__use_default_huffman_table(self, ((uint8_t)(0u | self->private_impl.f_scan_comps_td[v_i])));
-+        if (status.repr) {
-+          goto suspend;
-+        }
-+      }
-+      if ((self->private_impl.f_scan_se != 0u) &&  ! self->private_impl.f_seen_dht[((uint8_t)(4u | self->private_impl.f_scan_comps_ta[v_i]))]) {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+        status = wuffs_jpeg__decoder__use_default_huffman_table(self, ((uint8_t)(4u | self->private_impl.f_scan_comps_ta[v_i])));
-+        if (status.repr) {
-+          goto suspend;
-+        }
-+      }
-+      v_j = ((uint32_t)(self->private_impl.f_scan_ss));
-+      v_j_max_incl = ((uint32_t)(wuffs_base__u8__min(self->private_impl.f_scan_se, 9u)));
-+      while (v_j <= v_j_max_incl) {
-+        self->private_impl.f_block_smoothing_lowest_scan_al[self->private_impl.f_scan_comps_cselector[v_i]][v_j] = self->private_impl.f_scan_al;
-+        v_j += 1u;
-+      }
-+      v_i += 1u;
-+    }
-+    if (self->private_impl.f_scan_num_components == 1u) {
-+      wuffs_jpeg__decoder__calculate_single_component_scan_fields(self);
-+    } else {
-+      v_failed = wuffs_jpeg__decoder__calculate_multiple_component_scan_fields(self);
-+      if (v_failed) {
-+        status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker);
-+        goto exit;
-+      }
-+    }
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_prepare_scan = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_prepare_scan = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_prepare_scan.v_i = v_i;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func jpeg.decoder.use_default_huffman_table
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_jpeg__decoder__use_default_huffman_table(
-+    wuffs_jpeg__decoder* self,
-+    uint8_t a_tc4_th) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__slice_u8 v_data = {0};
-+  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
-+  wuffs_base__io_buffer* v_r = &u_r;
-+  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  if (a_tc4_th == 0u) {
-+    v_data = wuffs_base__make_slice_u8(wuffs_base__strip_const_from_u8_ptr(WUFFS_JPEG__DEFAULT_HUFF_TABLE_DC_LUMA), 29);
-+  } else if (a_tc4_th == 1u) {
-+    v_data = wuffs_base__make_slice_u8(wuffs_base__strip_const_from_u8_ptr(WUFFS_JPEG__DEFAULT_HUFF_TABLE_DC_CHROMA), 29);
-+  } else if (a_tc4_th == 4u) {
-+    v_data = wuffs_base__make_slice_u8(wuffs_base__strip_const_from_u8_ptr(WUFFS_JPEG__DEFAULT_HUFF_TABLE_AC_LUMA), 179);
-+  } else if (a_tc4_th == 5u) {
-+    v_data = wuffs_base__make_slice_u8(wuffs_base__strip_const_from_u8_ptr(WUFFS_JPEG__DEFAULT_HUFF_TABLE_AC_CHROMA), 179);
-+  } else {
-+    status = wuffs_base__make_status(wuffs_jpeg__error__missing_huffman_table);
-+    goto exit;
-+  }
-+  {
-+    wuffs_base__io_buffer* o_0_v_r = v_r;
-+    const uint8_t* o_0_iop_v_r = iop_v_r;
-+    const uint8_t* o_0_io0_v_r = io0_v_r;
-+    const uint8_t* o_0_io1_v_r = io1_v_r;
-+    const uint8_t* o_0_io2_v_r = io2_v_r;
-+    v_r = wuffs_private_impl__io_reader__set(
-+        &u_r,
-+        &iop_v_r,
-+        &io0_v_r,
-+        &io1_v_r,
-+        &io2_v_r,
-+        v_data,
-+        0u);
-+    self->private_impl.f_payload_length = ((uint32_t)((((uint64_t)(v_data.len)) & 65535u)));
-+    {
-+      wuffs_base__status t_0 = wuffs_jpeg__decoder__decode_dht(self, v_r);
-+      v_status = t_0;
-+    }
-+    v_r = o_0_v_r;
-+    iop_v_r = o_0_iop_v_r;
-+    io0_v_r = o_0_io0_v_r;
-+    io1_v_r = o_0_io1_v_r;
-+    io2_v_r = o_0_io2_v_r;
-+  }
-+  status = v_status;
-+  if (wuffs_base__status__is_error(&status)) {
-+    goto exit;
-+  } else if (wuffs_base__status__is_suspension(&status)) {
-+    status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+    goto exit;
-+  }
-+  goto ok;
-+
-+  ok:
-+  goto exit;
-+  exit:
-+  return status;
-+}
-+
-+// -------- func jpeg.decoder.calculate_single_component_scan_fields
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_jpeg__decoder__calculate_single_component_scan_fields(
-+    wuffs_jpeg__decoder* self) {
-+  uint8_t v_csel = 0;
-+
-+  self->private_impl.f_scan_comps_bx_offset[0u] = 0u;
-+  self->private_impl.f_scan_comps_by_offset[0u] = 0u;
-+  self->private_impl.f_mcu_num_blocks = 1u;
-+  self->private_impl.f_mcu_blocks_sselector[0u] = 0u;
-+  v_csel = self->private_impl.f_scan_comps_cselector[0u];
-+  self->private_impl.f_mcu_blocks_offset[0u] = self->private_impl.f_components_workbuf_offsets[v_csel];
-+  self->private_impl.f_mcu_blocks_mx_mul[0u] = 8u;
-+  self->private_impl.f_mcu_blocks_my_mul[0u] = (8u * self->private_impl.f_components_workbuf_widths[v_csel]);
-+  self->private_impl.f_mcu_blocks_dc_hselector[0u] = ((uint8_t)(0u | self->private_impl.f_scan_comps_td[0u]));
-+  self->private_impl.f_mcu_blocks_ac_hselector[0u] = ((uint8_t)(4u | self->private_impl.f_scan_comps_ta[0u]));
-+  self->private_impl.f_scan_width_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_width, self->private_impl.f_components_h[v_csel], self->private_impl.f_max_incl_components_h);
-+  self->private_impl.f_scan_height_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_height, self->private_impl.f_components_v[v_csel], self->private_impl.f_max_incl_components_v);
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+// -------- func jpeg.decoder.calculate_multiple_component_scan_fields
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static bool
-+wuffs_jpeg__decoder__calculate_multiple_component_scan_fields(
-+    wuffs_jpeg__decoder* self) {
-+  uint32_t v_i = 0;
-+  uint32_t v_h = 0;
-+  uint32_t v_v = 0;
-+  uint32_t v_hv = 0;
-+  uint32_t v_total_hv = 0;
-+  uint32_t v_b = 0;
-+  uint32_t v_bx_offset = 0;
-+  uint32_t v_by_offset = 0;
-+  uint32_t v_sibo = 0;
-+  uint8_t v_ssel = 0;
-+  uint8_t v_csel = 0;
-+
-+  v_total_hv = 0u;
-+  v_i = 0u;
-+  v_b = 0u;
-+  v_bx_offset = 0u;
-+  v_by_offset = 0u;
-+  while (v_i < self->private_impl.f_scan_num_components) {
-+    v_h = ((uint32_t)(self->private_impl.f_components_h[self->private_impl.f_scan_comps_cselector[v_i]]));
-+    v_v = ((uint32_t)(self->private_impl.f_components_v[self->private_impl.f_scan_comps_cselector[v_i]]));
-+    v_hv = (((uint32_t)(self->private_impl.f_components_h[self->private_impl.f_scan_comps_cselector[v_i]])) * ((uint32_t)(self->private_impl.f_components_v[self->private_impl.f_scan_comps_cselector[v_i]])));
-+    self->private_impl.f_swizzle_immediately_c_offsets[v_i] = ((uint32_t)(64u * v_total_hv));
-+    v_total_hv += v_hv;
-+    while (v_hv > 0u) {
-+      self->private_impl.f_scan_comps_bx_offset[(v_b & 15u)] = ((uint8_t)((v_bx_offset & 3u)));
-+      self->private_impl.f_scan_comps_by_offset[(v_b & 15u)] = ((uint8_t)((v_by_offset & 3u)));
-+      self->private_impl.f_mcu_blocks_sselector[(v_b & 15u)] = ((uint8_t)(v_i));
-+      v_b += 1u;
-+      v_bx_offset += 1u;
-+      if (v_bx_offset == v_h) {
-+        v_bx_offset = 0u;
-+        v_by_offset += 1u;
-+        if (v_by_offset == v_v) {
-+          v_by_offset = 0u;
-+        }
-+      }
-+      v_hv -= 1u;
-+    }
-+    v_i += 1u;
-+  }
-+  if (v_total_hv > 10u) {
-+    return true;
-+  }
-+  self->private_impl.f_mcu_num_blocks = v_total_hv;
-+  self->private_impl.f_swizzle_immediately_c_offsets[self->private_impl.f_scan_num_components] = ((uint32_t)(64u * v_total_hv));
-+  v_b = 0u;
-+  while (v_b < self->private_impl.f_mcu_num_blocks) {
-+    v_ssel = self->private_impl.f_mcu_blocks_sselector[v_b];
-+    v_csel = self->private_impl.f_scan_comps_cselector[v_ssel];
-+    self->private_impl.f_mcu_blocks_offset[v_b] = (self->private_impl.f_components_workbuf_offsets[v_csel] + (8u * ((uint64_t)(self->private_impl.f_scan_comps_bx_offset[v_b]))) + (8u * ((uint64_t)(self->private_impl.f_scan_comps_by_offset[v_b])) * ((uint64_t)(self->private_impl.f_components_workbuf_widths[v_csel]))));
-+    self->private_impl.f_mcu_blocks_mx_mul[v_b] = (8u * ((uint32_t)(self->private_impl.f_components_h[v_csel])));
-+    self->private_impl.f_mcu_blocks_my_mul[v_b] = (8u * ((uint32_t)(self->private_impl.f_components_v[v_csel])) * self->private_impl.f_components_workbuf_widths[v_csel]);
-+    self->private_impl.f_mcu_blocks_dc_hselector[v_b] = ((uint8_t)(0u | self->private_impl.f_scan_comps_td[v_ssel]));
-+    self->private_impl.f_mcu_blocks_ac_hselector[v_b] = ((uint8_t)(4u | self->private_impl.f_scan_comps_ta[v_ssel]));
-+    v_sibo = ((uint32_t)(self->private_impl.f_swizzle_immediately_c_offsets[v_csel] + ((8u * ((uint32_t)(self->private_impl.f_scan_comps_bx_offset[v_b]))) + (64u * ((uint32_t)(self->private_impl.f_scan_comps_by_offset[v_b])) * ((uint32_t)(self->private_impl.f_components_h[v_csel]))))));
-+    self->private_impl.f_swizzle_immediately_b_offsets[v_b] = wuffs_base__u32__min(v_sibo, 576u);
-+    v_b += 1u;
-+  }
-+  self->private_impl.f_scan_width_in_mcus = self->private_impl.f_width_in_mcus;
-+  self->private_impl.f_scan_height_in_mcus = self->private_impl.f_height_in_mcus;
-+  return false;
-+}
-+
-+// -------- func jpeg.decoder.fill_bitstream
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_jpeg__decoder__fill_bitstream(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  uint32_t v_wi = 0;
-+  uint8_t v_c8 = 0;
-+  uint32_t v_new_wi = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  if (self->private_impl.f_bitstream_ri <= 0u) {
-+  } else if (self->private_impl.f_bitstream_ri >= self->private_impl.f_bitstream_wi) {
-+    self->private_impl.f_bitstream_ri = 0u;
-+    self->private_impl.f_bitstream_wi = 0u;
-+  } else {
-+    v_wi = (self->private_impl.f_bitstream_wi - self->private_impl.f_bitstream_ri);
-+    wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_bitstream_buffer, 2048), wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
-+        self->private_impl.f_bitstream_ri,
-+        self->private_impl.f_bitstream_wi));
-+    self->private_impl.f_bitstream_ri = 0u;
-+    self->private_impl.f_bitstream_wi = v_wi;
-+  }
-+  v_wi = self->private_impl.f_bitstream_wi;
-+  while ((v_wi < 2048u) && (((uint64_t)(io2_a_src - iop_a_src)) > 0u)) {
-+    v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+    if (v_c8 < 255u) {
-+      self->private_data.f_bitstream_buffer[v_wi] = v_c8;
-+      v_wi += 1u;
-+      iop_a_src += 1u;
-+      continue;
-+    } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 1u) {
-+      break;
-+    } else if (((uint16_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8u)) > 0u) {
-+      break;
-+    } else {
-+      self->private_data.f_bitstream_buffer[v_wi] = 255u;
-+      v_wi += 1u;
-+      iop_a_src += 2u;
-+    }
-+  }
-+  if (((uint64_t)(io2_a_src - iop_a_src)) > 1u) {
-+    if ((wuffs_base__peek_u8be__no_bounds_check(iop_a_src) >= 255u) && (((uint16_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8u)) > 0u)) {
-+      v_new_wi = (wuffs_base__u32__min(v_wi, 1784u) + 264u);
-+      v_new_wi = wuffs_base__u32__min(v_new_wi, (v_wi + self->private_impl.f_bitstream_padding));
-+      if (v_wi < v_new_wi) {
-+        wuffs_private_impl__u32__sat_sub_indirect(&self->private_impl.f_bitstream_padding, (v_new_wi - v_wi));
-+        wuffs_private_impl__bulk_memset(&self->private_data.f_bitstream_buffer[v_wi], (v_new_wi - v_wi), 0u);
-+        v_wi = v_new_wi;
-+      }
-+    }
-+  }
-+  self->private_impl.f_bitstream_wi = v_wi;
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+// -------- func jpeg.decoder.load_mcu_blocks_for_single_component
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_jpeg__decoder__load_mcu_blocks_for_single_component(
-+    wuffs_jpeg__decoder* self,
-+    uint32_t a_mx,
-+    uint32_t a_my,
-+    wuffs_base__slice_u8 a_workbuf,
-+    uint32_t a_csel) {
-+  return (*self->private_impl.choosy_load_mcu_blocks_for_single_component)(self, a_mx, a_my, a_workbuf, a_csel);
-+}
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_jpeg__decoder__load_mcu_blocks_for_single_component__choosy_default(
-+    wuffs_jpeg__decoder* self,
-+    uint32_t a_mx,
-+    uint32_t a_my,
-+    wuffs_base__slice_u8 a_workbuf,
-+    uint32_t a_csel) {
-+  uint64_t v_stride16 = 0;
-+  uint64_t v_offset = 0;
-+
-+  v_stride16 = ((uint64_t)((self->private_impl.f_components_workbuf_widths[a_csel] * 16u)));
-+  v_offset = (self->private_impl.f_components_workbuf_offsets[(a_csel | 4u)] + (((uint64_t)(a_mx)) * 128u) + (((uint64_t)(a_my)) * v_stride16));
-+  if (v_offset <= ((uint64_t)(a_workbuf.len))) {
-+    wuffs_private_impl__bulk_load_host_endian(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset));
-+  }
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+// -------- func jpeg.decoder.load_mcu_blocks
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_jpeg__decoder__load_mcu_blocks(
-+    wuffs_jpeg__decoder* self,
-+    uint32_t a_mx,
-+    uint32_t a_my,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  uint32_t v_b = 0;
-+  uint8_t v_csel = 0;
-+  uint64_t v_h = 0;
-+  uint64_t v_v = 0;
-+  uint64_t v_stride16 = 0;
-+  uint64_t v_offset = 0;
-+
-+  v_h = 1u;
-+  v_v = 1u;
-+  v_b = 0u;
-+  while (v_b < self->private_impl.f_mcu_num_blocks) {
-+    v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[v_b]];
-+    if (self->private_impl.f_scan_num_components > 1u) {
-+      v_h = ((uint64_t)(self->private_impl.f_components_h[v_csel]));
-+      v_v = ((uint64_t)(self->private_impl.f_components_v[v_csel]));
-+    }
-+    v_stride16 = ((uint64_t)((self->private_impl.f_components_workbuf_widths[v_csel] * 16u)));
-+    v_offset = (self->private_impl.f_components_workbuf_offsets[((uint8_t)(v_csel | 4u))] + (((v_h * ((uint64_t)(a_mx))) + ((uint64_t)(self->private_impl.f_scan_comps_bx_offset[v_b]))) * 128u) + (((v_v * ((uint64_t)(a_my))) + ((uint64_t)(self->private_impl.f_scan_comps_by_offset[v_b]))) * v_stride16));
-+    if (v_offset <= ((uint64_t)(a_workbuf.len))) {
-+      wuffs_private_impl__bulk_load_host_endian(&self->private_data.f_mcu_blocks[v_b], 1u * (size_t)128u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset));
-+    }
-+    v_b += 1u;
-+  }
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+// -------- func jpeg.decoder.save_mcu_blocks
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_jpeg__decoder__save_mcu_blocks(
-+    wuffs_jpeg__decoder* self,
-+    uint32_t a_mx,
-+    uint32_t a_my,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  uint32_t v_b = 0;
-+  uint8_t v_csel = 0;
-+  uint64_t v_h = 0;
-+  uint64_t v_v = 0;
-+  uint64_t v_stride16 = 0;
-+  uint64_t v_offset = 0;
-+
-+  v_h = 1u;
-+  v_v = 1u;
-+  v_b = 0u;
-+  while (v_b < self->private_impl.f_mcu_num_blocks) {
-+    v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[v_b]];
-+    if (self->private_impl.f_scan_num_components > 1u) {
-+      v_h = ((uint64_t)(self->private_impl.f_components_h[v_csel]));
-+      v_v = ((uint64_t)(self->private_impl.f_components_v[v_csel]));
-+    }
-+    v_stride16 = ((uint64_t)((self->private_impl.f_components_workbuf_widths[v_csel] * 16u)));
-+    v_offset = (self->private_impl.f_components_workbuf_offsets[((uint8_t)(v_csel | 4u))] + (((v_h * ((uint64_t)(a_mx))) + ((uint64_t)(self->private_impl.f_scan_comps_bx_offset[v_b]))) * 128u) + (((v_v * ((uint64_t)(a_my))) + ((uint64_t)(self->private_impl.f_scan_comps_by_offset[v_b]))) * v_stride16));
-+    if (v_offset <= ((uint64_t)(a_workbuf.len))) {
-+      wuffs_private_impl__bulk_save_host_endian(&self->private_data.f_mcu_blocks[v_b], 1u * (size_t)128u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset));
-+    }
-+    v_b += 1u;
-+  }
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+// -------- func jpeg.decoder.skip_past_the_next_restart_marker
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_jpeg__decoder__skip_past_the_next_restart_marker(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_c8 = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_skip_past_the_next_restart_marker;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+        continue;
-+      } else if (wuffs_base__peek_u8be__no_bounds_check(iop_a_src) < 255u) {
-+        iop_a_src += 1u;
-+        continue;
-+      }
-+      v_c8 = ((uint8_t)(((uint16_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8u))));
-+      if (v_c8 < 192u) {
-+        iop_a_src += 2u;
-+        continue;
-+      } else if ((v_c8 < 208u) || (215u < v_c8)) {
-+        break;
-+      }
-+      v_c8 &= 7u;
-+      if ((self->private_impl.f_next_restart_marker == ((uint8_t)(((uint8_t)(v_c8 + 1u)) & 7u))) || (self->private_impl.f_next_restart_marker == ((uint8_t)(((uint8_t)(v_c8 + 2u)) & 7u)))) {
-+        break;
-+      } else if ((self->private_impl.f_next_restart_marker == ((uint8_t)(((uint8_t)(v_c8 + 7u)) & 7u))) || (self->private_impl.f_next_restart_marker == ((uint8_t)(((uint8_t)(v_c8 + 6u)) & 7u)))) {
-+        iop_a_src += 2u;
-+        continue;
-+      } else {
-+        iop_a_src += 2u;
-+        break;
-+      }
-+    }
-+    self->private_impl.f_next_restart_marker = ((uint8_t)(((uint8_t)(self->private_impl.f_next_restart_marker + 1u)) & 7u));
-+
-+    ok:
-+    self->private_impl.p_skip_past_the_next_restart_marker = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_skip_past_the_next_restart_marker = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func jpeg.decoder.apply_progressive_idct
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_jpeg__decoder__apply_progressive_idct(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  uint32_t v_csel = 0;
-+  bool v_block_smoothing_applicable = false;
-+  uint32_t v_scan_width_in_mcus = 0;
-+  uint32_t v_scan_height_in_mcus = 0;
-+  uint32_t v_mcu_blocks_mx_mul_0 = 0;
-+  uint32_t v_mcu_blocks_my_mul_0 = 0;
-+  uint32_t v_my = 0;
-+  uint32_t v_mx = 0;
-+  uint64_t v_stride = 0;
-+  uint64_t v_offset = 0;
-+  uint8_t v_stashed_mcu_blocks_0[128] = {0};
-+
-+  wuffs_private_impl__bulk_save_host_endian(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, wuffs_base__make_slice_u8(v_stashed_mcu_blocks_0, 128));
-+  v_block_smoothing_applicable = true;
-+  v_csel = 0u;
-+  while (v_csel < self->private_impl.f_num_components) {
-+    if ((self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][0u] >= 16u) || wuffs_jpeg__decoder__top_left_quants_has_zero(self, ((uint32_t)(self->private_impl.f_components_tq[v_csel])))) {
-+      v_block_smoothing_applicable = false;
-+    }
-+    v_csel += 1u;
-+  }
-+  v_csel = 0u;
-+  while (v_csel < self->private_impl.f_num_components) {
-+    v_scan_width_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_width, self->private_impl.f_components_h[v_csel], self->private_impl.f_max_incl_components_h);
-+    v_scan_height_in_mcus = wuffs_jpeg__decoder__quantize_dimension(self, self->private_impl.f_height, self->private_impl.f_components_v[v_csel], self->private_impl.f_max_incl_components_v);
-+    v_mcu_blocks_mx_mul_0 = 8u;
-+    v_mcu_blocks_my_mul_0 = (8u * self->private_impl.f_components_workbuf_widths[v_csel]);
-+    if (v_block_smoothing_applicable && (0u != (self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][1u] |
-+        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][2u] |
-+        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][3u] |
-+        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][4u] |
-+        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][5u] |
-+        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][6u] |
-+        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][8u] |
-+        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][8u] |
-+        self->private_impl.f_block_smoothing_lowest_scan_al[v_csel][9u]))) {
-+      self->private_impl.choosy_load_mcu_blocks_for_single_component = (
-+          &wuffs_jpeg__decoder__load_mcu_blocks_for_single_component_smooth);
-+      self->private_impl.f_block_smoothing_mx_max_incl = wuffs_base__u32__sat_sub(v_scan_width_in_mcus, 1u);
-+      self->private_impl.f_block_smoothing_my_max_incl = wuffs_base__u32__sat_sub(v_scan_height_in_mcus, 1u);
-+    } else {
-+      self->private_impl.choosy_load_mcu_blocks_for_single_component = (
-+          &wuffs_jpeg__decoder__load_mcu_blocks_for_single_component__choosy_default);
-+    }
-+    v_my = 0u;
-+    while (v_my < v_scan_height_in_mcus) {
-+      v_mx = 0u;
-+      while (v_mx < v_scan_width_in_mcus) {
-+        wuffs_jpeg__decoder__load_mcu_blocks_for_single_component(self,
-+            v_mx,
-+            v_my,
-+            a_workbuf,
-+            v_csel);
-+        v_stride = ((uint64_t)(self->private_impl.f_components_workbuf_widths[v_csel]));
-+        v_offset = (self->private_impl.f_components_workbuf_offsets[v_csel] + (((uint64_t)(v_mcu_blocks_mx_mul_0)) * ((uint64_t)(v_mx))) + (((uint64_t)(v_mcu_blocks_my_mul_0)) * ((uint64_t)(v_my))));
-+        if (v_offset <= ((uint64_t)(a_workbuf.len))) {
-+          wuffs_jpeg__decoder__decode_idct(self, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset), v_stride, ((uint32_t)(self->private_impl.f_components_tq[v_csel])));
-+        }
-+        v_mx += 1u;
-+      }
-+      v_my += 1u;
-+    }
-+    v_csel += 1u;
-+  }
-+  wuffs_private_impl__bulk_load_host_endian(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, wuffs_base__make_slice_u8(v_stashed_mcu_blocks_0, 128));
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+// -------- func jpeg.decoder.swizzle_gray
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_jpeg__decoder__swizzle_gray(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__slice_u8 a_workbuf,
-+    uint32_t a_x0,
-+    uint32_t a_x1,
-+    uint32_t a_y0,
-+    uint32_t a_y1,
-+    uint64_t a_stride) {
-+  wuffs_base__pixel_format v_dst_pixfmt = {0};
-+  uint32_t v_dst_bits_per_pixel = 0;
-+  uint32_t v_dst_bytes_per_pixel = 0;
-+  uint64_t v_x0 = 0;
-+  uint64_t v_x1 = 0;
-+  wuffs_base__table_u8 v_tab = {0};
-+  wuffs_base__slice_u8 v_dst = {0};
-+  uint32_t v_y = 0;
-+  uint32_t v_y1 = 0;
-+
-+  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
-+  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
-+  if ((v_dst_bits_per_pixel & 7u) != 0u) {
-+    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+  }
-+  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
-+  v_x0 = ((uint64_t)((v_dst_bytes_per_pixel * wuffs_base__u32__min(a_x0, self->private_impl.f_width))));
-+  v_x1 = ((uint64_t)((v_dst_bytes_per_pixel * wuffs_base__u32__min(a_x1, self->private_impl.f_width))));
-+  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
-+  v_y = a_y0;
-+  v_y1 = wuffs_base__u32__min(a_y1, self->private_impl.f_height);
-+  while (v_y < v_y1) {
-+    v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, v_y);
-+    if (v_x1 < ((uint64_t)(v_dst.len))) {
-+      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_x1);
-+    }
-+    if (v_x0 < ((uint64_t)(v_dst.len))) {
-+      v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_x0);
-+    } else {
-+      v_dst = wuffs_base__utility__empty_slice_u8();
-+    }
-+    wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)), a_workbuf);
-+    if (a_stride <= ((uint64_t)(a_workbuf.len))) {
-+      a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, a_stride);
-+    } else {
-+      a_workbuf = wuffs_base__utility__empty_slice_u8();
-+    }
-+    v_y += 1u;
-+  }
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+// -------- func jpeg.decoder.swizzle_colorful
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_jpeg__decoder__swizzle_colorful(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__slice_u8 a_workbuf,
-+    uint32_t a_x0,
-+    uint32_t a_x1,
-+    uint32_t a_y0,
-+    uint32_t a_y1) {
-+  uint64_t v_i = 0;
-+  uint64_t v_j = 0;
-+  wuffs_base__slice_u8 v_src0 = {0};
-+  wuffs_base__slice_u8 v_src1 = {0};
-+  wuffs_base__slice_u8 v_src2 = {0};
-+  wuffs_base__slice_u8 v_src3 = {0};
-+  uint32_t v_width0 = 0;
-+  uint32_t v_width1 = 0;
-+  uint32_t v_width2 = 0;
-+  uint32_t v_width3 = 0;
-+  uint32_t v_height0 = 0;
-+  uint32_t v_height1 = 0;
-+  uint32_t v_height2 = 0;
-+  uint32_t v_height3 = 0;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  if (self->private_impl.f_swizzle_immediately) {
-+    v_i = ((uint64_t)(self->private_impl.f_swizzle_immediately_c_offsets[0u]));
-+    v_j = ((uint64_t)(self->private_impl.f_swizzle_immediately_c_offsets[1u]));
-+    if ((v_i <= v_j) && (v_j <= 640u)) {
-+      v_src0 = wuffs_base__make_slice_u8_ij(self->private_data.f_swizzle_immediately_buffer, v_i, v_j);
-+      v_width0 = (8u * ((uint32_t)(self->private_impl.f_components_h[0u])));
-+      v_height0 = (8u * ((uint32_t)(self->private_impl.f_components_v[0u])));
-+    }
-+    v_i = ((uint64_t)(self->private_impl.f_swizzle_immediately_c_offsets[1u]));
-+    v_j = ((uint64_t)(self->private_impl.f_swizzle_immediately_c_offsets[2u]));
-+    if ((v_i <= v_j) && (v_j <= 640u)) {
-+      v_src1 = wuffs_base__make_slice_u8_ij(self->private_data.f_swizzle_immediately_buffer, v_i, v_j);
-+      v_width1 = (8u * ((uint32_t)(self->private_impl.f_components_h[1u])));
-+      v_height1 = (8u * ((uint32_t)(self->private_impl.f_components_v[1u])));
-+    }
-+    v_i = ((uint64_t)(self->private_impl.f_swizzle_immediately_c_offsets[2u]));
-+    v_j = ((uint64_t)(self->private_impl.f_swizzle_immediately_c_offsets[3u]));
-+    if ((v_i <= v_j) && (v_j <= 640u)) {
-+      v_src2 = wuffs_base__make_slice_u8_ij(self->private_data.f_swizzle_immediately_buffer, v_i, v_j);
-+      v_width2 = (8u * ((uint32_t)(self->private_impl.f_components_h[2u])));
-+      v_height2 = (8u * ((uint32_t)(self->private_impl.f_components_v[2u])));
-+    }
-+    v_i = ((uint64_t)(self->private_impl.f_swizzle_immediately_c_offsets[3u]));
-+    v_j = ((uint64_t)(self->private_impl.f_swizzle_immediately_c_offsets[4u]));
-+    if ((v_i <= v_j) && (v_j <= 640u)) {
-+      v_src3 = wuffs_base__make_slice_u8_ij(self->private_data.f_swizzle_immediately_buffer, v_i, v_j);
-+      v_width3 = (8u * ((uint32_t)(self->private_impl.f_components_h[3u])));
-+      v_height3 = (8u * ((uint32_t)(self->private_impl.f_components_v[3u])));
-+    }
-+  } else {
-+    if ((self->private_impl.f_components_workbuf_offsets[0u] <= self->private_impl.f_components_workbuf_offsets[1u]) && (self->private_impl.f_components_workbuf_offsets[1u] <= ((uint64_t)(a_workbuf.len)))) {
-+      v_src0 = wuffs_base__slice_u8__subslice_ij(a_workbuf,
-+          self->private_impl.f_components_workbuf_offsets[0u],
-+          self->private_impl.f_components_workbuf_offsets[1u]);
-+      v_width0 = self->private_impl.f_components_workbuf_widths[0u];
-+      v_height0 = self->private_impl.f_components_workbuf_heights[0u];
-+    }
-+    if ((self->private_impl.f_components_workbuf_offsets[1u] <= self->private_impl.f_components_workbuf_offsets[2u]) && (self->private_impl.f_components_workbuf_offsets[2u] <= ((uint64_t)(a_workbuf.len)))) {
-+      v_src1 = wuffs_base__slice_u8__subslice_ij(a_workbuf,
-+          self->private_impl.f_components_workbuf_offsets[1u],
-+          self->private_impl.f_components_workbuf_offsets[2u]);
-+      v_width1 = self->private_impl.f_components_workbuf_widths[1u];
-+      v_height1 = self->private_impl.f_components_workbuf_heights[1u];
-+    }
-+    if ((self->private_impl.f_components_workbuf_offsets[2u] <= self->private_impl.f_components_workbuf_offsets[3u]) && (self->private_impl.f_components_workbuf_offsets[3u] <= ((uint64_t)(a_workbuf.len)))) {
-+      v_src2 = wuffs_base__slice_u8__subslice_ij(a_workbuf,
-+          self->private_impl.f_components_workbuf_offsets[2u],
-+          self->private_impl.f_components_workbuf_offsets[3u]);
-+      v_width2 = self->private_impl.f_components_workbuf_widths[2u];
-+      v_height2 = self->private_impl.f_components_workbuf_heights[2u];
-+    }
-+    if ((self->private_impl.f_components_workbuf_offsets[3u] <= self->private_impl.f_components_workbuf_offsets[4u]) && (self->private_impl.f_components_workbuf_offsets[4u] <= ((uint64_t)(a_workbuf.len)))) {
-+      v_src3 = wuffs_base__slice_u8__subslice_ij(a_workbuf,
-+          self->private_impl.f_components_workbuf_offsets[3u],
-+          self->private_impl.f_components_workbuf_offsets[4u]);
-+      v_width3 = self->private_impl.f_components_workbuf_widths[3u];
-+      v_height3 = self->private_impl.f_components_workbuf_heights[3u];
-+    }
-+  }
-+  v_status = wuffs_base__pixel_swizzler__swizzle_ycck(&self->private_impl.f_swizzler,
-+      a_dst,
-+      wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
-+      (a_x0 & 65535u),
-+      wuffs_base__u32__min(a_x1, self->private_impl.f_width),
-+      (a_y0 & 65535u),
-+      wuffs_base__u32__min(a_y1, self->private_impl.f_height),
-+      v_src0,
-+      v_src1,
-+      v_src2,
-+      v_src3,
-+      v_width0,
-+      v_width1,
-+      v_width2,
-+      v_width3,
-+      v_height0,
-+      v_height1,
-+      v_height2,
-+      v_height3,
-+      v_width0,
-+      v_width1,
-+      v_width2,
-+      v_width3,
-+      self->private_impl.f_components_h[0u],
-+      self->private_impl.f_components_h[1u],
-+      self->private_impl.f_components_h[2u],
-+      self->private_impl.f_components_h[3u],
-+      self->private_impl.f_components_v[0u],
-+      self->private_impl.f_components_v[1u],
-+      self->private_impl.f_components_v[2u],
-+      self->private_impl.f_components_v[3u],
-+      self->private_impl.f_is_rgb_or_cmyk,
-+      ! self->private_impl.f_use_lower_quality,
-+      wuffs_base__make_slice_u8(self->private_data.f_swizzle_ycck_scratch_buffer_2k, 2048));
-+  return wuffs_private_impl__status__ensure_not_a_suspension(v_status);
-+}
-+
-+// -------- func jpeg.decoder.frame_dirty_rect
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
-+wuffs_jpeg__decoder__frame_dirty_rect(
-+    const wuffs_jpeg__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_rect_ie_u32();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_rect_ie_u32();
-+  }
-+
-+  return wuffs_base__utility__make_rect_ie_u32(
-+      0u,
-+      0u,
-+      self->private_impl.f_width,
-+      self->private_impl.f_height);
-+}
-+
-+// -------- func jpeg.decoder.num_animation_loops
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_jpeg__decoder__num_animation_loops(
-+    const wuffs_jpeg__decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  return 0u;
-+}
-+
-+// -------- func jpeg.decoder.num_decoded_frame_configs
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_jpeg__decoder__num_decoded_frame_configs(
-+    const wuffs_jpeg__decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  if (self->private_impl.f_call_sequence > 32u) {
-+    return 1u;
-+  }
-+  return 0u;
-+}
-+
-+// -------- func jpeg.decoder.num_decoded_frames
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_jpeg__decoder__num_decoded_frames(
-+    const wuffs_jpeg__decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  if (self->private_impl.f_call_sequence > 64u) {
-+    return 1u;
-+  }
-+  return 0u;
-+}
-+
-+// -------- func jpeg.decoder.restart_frame
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_jpeg__decoder__restart_frame(
-+    wuffs_jpeg__decoder* self,
-+    uint64_t a_index,
-+    uint64_t a_io_position) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+
-+  uint32_t v_i = 0;
-+  uint32_t v_j = 0;
-+
-+  if (self->private_impl.f_call_sequence < 32u) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+  }
-+  if (a_index != 0u) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  self->private_impl.f_call_sequence = 40u;
-+  self->private_impl.f_bitstream_is_closed = false;
-+  self->private_impl.f_expect_multiple_scans = false;
-+  self->private_impl.f_frame_config_io_position = a_io_position;
-+  self->private_impl.f_scan_count = 0u;
-+  self->private_impl.f_restart_interval = self->private_impl.f_saved_restart_interval;
-+  v_i = 0u;
-+  while (v_i < 4u) {
-+    self->private_impl.f_seen_dqt[v_i] = self->private_impl.f_saved_seen_dqt[v_i];
-+    v_j = 0u;
-+    while (v_j < 64u) {
-+      self->private_impl.f_quant_tables[v_i][v_j] = self->private_impl.f_saved_quant_tables[v_i][v_j];
-+      v_j += 1u;
-+    }
-+    v_i += 1u;
-+  }
-+  v_i = 0u;
-+  while (v_i < 4u) {
-+    v_j = 0u;
-+    while (v_j < 10u) {
-+      self->private_impl.f_block_smoothing_lowest_scan_al[v_i][v_j] = 16u;
-+      v_j += 1u;
-+    }
-+    v_i += 1u;
-+  }
-+  v_i = 0u;
-+  while (v_i < 8u) {
-+    self->private_impl.f_seen_dht[v_i] = false;
-+    v_i += 1u;
-+  }
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+// -------- func jpeg.decoder.set_report_metadata
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_jpeg__decoder__set_report_metadata(
-+    wuffs_jpeg__decoder* self,
-+    uint32_t a_fourcc,
-+    bool a_report) {
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+// -------- func jpeg.decoder.tell_me_more
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_jpeg__decoder__tell_me_more(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__more_information* a_minfo,
-+    wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_dst || !a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 4)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  status = wuffs_base__make_status(wuffs_base__error__no_more_information);
-+  goto exit;
-+
-+  goto ok;
-+  ok:
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func jpeg.decoder.workbuf_len
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_jpeg__decoder__workbuf_len(
-+    const wuffs_jpeg__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+
-+  if (self->private_impl.f_use_lower_quality && (self->private_impl.f_sof_marker < 194u)) {
-+    return wuffs_base__utility__make_range_ii_u64(0u, self->private_impl.f_components_workbuf_offsets[8u]);
-+  }
-+  return wuffs_base__utility__make_range_ii_u64(self->private_impl.f_components_workbuf_offsets[8u], self->private_impl.f_components_workbuf_offsets[8u]);
-+}
-+
-+// -------- func jpeg.decoder.top_left_quants_has_zero
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static bool
-+wuffs_jpeg__decoder__top_left_quants_has_zero(
-+    const wuffs_jpeg__decoder* self,
-+    uint32_t a_q) {
-+  return ((self->private_impl.f_quant_tables[a_q][0u] == 0u) ||
-+      (self->private_impl.f_quant_tables[a_q][1u] == 0u) ||
-+      (self->private_impl.f_quant_tables[a_q][2u] == 0u) ||
-+      (self->private_impl.f_quant_tables[a_q][3u] == 0u) ||
-+      (self->private_impl.f_quant_tables[a_q][8u] == 0u) ||
-+      (self->private_impl.f_quant_tables[a_q][9u] == 0u) ||
-+      (self->private_impl.f_quant_tables[a_q][10u] == 0u) ||
-+      (self->private_impl.f_quant_tables[a_q][16u] == 0u) ||
-+      (self->private_impl.f_quant_tables[a_q][17u] == 0u) ||
-+      (self->private_impl.f_quant_tables[a_q][24u] == 0u));
-+}
-+
-+// -------- func jpeg.decoder.load_mcu_blocks_for_single_component_smooth
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_jpeg__decoder__load_mcu_blocks_for_single_component_smooth(
-+    wuffs_jpeg__decoder* self,
-+    uint32_t a_mx,
-+    uint32_t a_my,
-+    wuffs_base__slice_u8 a_workbuf,
-+    uint32_t a_csel) {
-+  uint64_t v_stride16 = 0;
-+  uint64_t v_offset = 0;
-+  uint32_t v_dx = 0;
-+  uint32_t v_dy = 0;
-+  uint32_t v_mx = 0;
-+  uint32_t v_my = 0;
-+  uint8_t v_q = 0;
-+  uint32_t v_q_00 = 0;
-+  uint32_t v_q_xy = 0;
-+  uint8_t v_al = 0;
-+  uint32_t v_scratch = 0;
-+  uint32_t v_limit = 0;
-+
-+  v_stride16 = ((uint64_t)((self->private_impl.f_components_workbuf_widths[a_csel] * 16u)));
-+  v_offset = (self->private_impl.f_components_workbuf_offsets[(a_csel | 4u)] + (((uint64_t)(a_mx)) * 128u) + (((uint64_t)(a_my)) * v_stride16));
-+  if (v_offset <= ((uint64_t)(a_workbuf.len))) {
-+    wuffs_private_impl__bulk_load_host_endian(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset));
-+  }
-+  v_dy = 0u;
-+  while (v_dy < 5u) {
-+    v_my = wuffs_base__u32__min(self->private_impl.f_block_smoothing_my_max_incl, wuffs_base__u32__sat_sub((a_my + v_dy), 2u));
-+    v_dx = 0u;
-+    while (v_dx < 5u) {
-+      v_mx = wuffs_base__u32__min(self->private_impl.f_block_smoothing_mx_max_incl, wuffs_base__u32__sat_sub((a_mx + v_dx), 2u));
-+      v_offset = (self->private_impl.f_components_workbuf_offsets[(a_csel | 4u)] + (((uint64_t)(v_mx)) * 128u) + (((uint64_t)(v_my)) * v_stride16));
-+      if (v_offset <= ((uint64_t)(a_workbuf.len))) {
-+        wuffs_private_impl__bulk_load_host_endian(&self->private_impl.f_block_smoothing_dc_values[v_dy][v_dx], 1u * (size_t)2u, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset));
-+      }
-+      v_dx += 1u;
-+    }
-+    v_dy += 1u;
-+  }
-+  v_q = self->private_impl.f_components_tq[a_csel];
-+  v_q_00 = ((uint32_t)(self->private_impl.f_quant_tables[v_q][0u]));
-+  if (v_q_00 <= 0u) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+  if (0u != (16u &
-+      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][1u] &
-+      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][2u] &
-+      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][3u] &
-+      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][4u] &
-+      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][5u] &
-+      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][6u] &
-+      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][7u] &
-+      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][8u] &
-+      self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][9u])) {
-+    v_scratch = 0u;
-+    v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
-+    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
-+    v_scratch += ((uint32_t)(4294967288u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
-+    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
-+    v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
-+    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
-+    v_scratch += ((uint32_t)(6u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
-+    v_scratch += ((uint32_t)(42u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
-+    v_scratch += ((uint32_t)(6u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
-+    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
-+    v_scratch += ((uint32_t)(4294967288u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
-+    v_scratch += ((uint32_t)(42u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
-+    v_scratch += ((uint32_t)(152u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
-+    v_scratch += ((uint32_t)(42u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
-+    v_scratch += ((uint32_t)(4294967288u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
-+    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
-+    v_scratch += ((uint32_t)(6u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
-+    v_scratch += ((uint32_t)(42u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
-+    v_scratch += ((uint32_t)(6u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
-+    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
-+    v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
-+    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
-+    v_scratch += ((uint32_t)(4294967288u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
-+    v_scratch += ((uint32_t)(4294967290u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
-+    v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
-+    if (v_scratch < 2147483648u) {
-+      v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + 128u)) / 256u)));
-+    } else {
-+      v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + 128u)) / 256u)));
-+    }
-+    self->private_data.f_mcu_blocks[0u][0u] = ((uint16_t)(v_scratch));
-+    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][1u]));
-+    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][1u] == 0u)) {
-+      v_scratch = 0u;
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
-+      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
-+      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
-+      v_scratch += ((uint32_t)(4294967283u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
-+      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
-+      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
-+      v_scratch += ((uint32_t)(38u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
-+      v_scratch += ((uint32_t)(4294967258u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
-+      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
-+      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
-+      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
-+      v_scratch += ((uint32_t)(4294967283u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
-+      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
-+      v_scratch *= v_q_00;
-+      if (v_scratch < 2147483648u) {
-+        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
-+      } else {
-+        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
-+      }
-+      self->private_data.f_mcu_blocks[0u][1u] = ((uint16_t)(v_scratch));
-+    }
-+    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][2u]));
-+    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][2u] == 0u)) {
-+      v_scratch = 0u;
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
-+      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
-+      v_scratch += ((uint32_t)(4294967291u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
-+      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
-+      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
-+      v_scratch += ((uint32_t)(4294967282u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
-+      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
-+      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
-+      v_scratch += ((uint32_t)(4294967291u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
-+      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
-+      v_scratch *= v_q_00;
-+      if (v_scratch < 2147483648u) {
-+        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
-+      } else {
-+        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
-+      }
-+      self->private_data.f_mcu_blocks[0u][2u] = ((uint16_t)(v_scratch));
-+    }
-+    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][3u]));
-+    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][3u] == 0u)) {
-+      v_scratch = 0u;
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
-+      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
-+      v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
-+      v_scratch *= v_q_00;
-+      if (v_scratch < 2147483648u) {
-+        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
-+      } else {
-+        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
-+      }
-+      self->private_data.f_mcu_blocks[0u][3u] = ((uint16_t)(v_scratch));
-+    }
-+    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][8u]));
-+    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][8u] == 0u)) {
-+      v_scratch = 0u;
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
-+      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
-+      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
-+      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
-+      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
-+      v_scratch += ((uint32_t)(38u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
-+      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
-+      v_scratch += ((uint32_t)(4294967283u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
-+      v_scratch += ((uint32_t)(4294967258u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
-+      v_scratch += ((uint32_t)(4294967283u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
-+      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
-+      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
-+      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
-+      v_scratch *= v_q_00;
-+      if (v_scratch < 2147483648u) {
-+        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
-+      } else {
-+        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
-+      }
-+      self->private_data.f_mcu_blocks[0u][8u] = ((uint16_t)(v_scratch));
-+    }
-+    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][9u]));
-+    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][9u] == 0u)) {
-+      v_scratch = 0u;
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
-+      v_scratch += ((uint32_t)(9u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
-+      v_scratch += ((uint32_t)(4294967287u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
-+      v_scratch += ((uint32_t)(4294967287u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
-+      v_scratch += ((uint32_t)(9u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
-+      v_scratch *= v_q_00;
-+      if (v_scratch < 2147483648u) {
-+        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
-+      } else {
-+        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
-+      }
-+      self->private_data.f_mcu_blocks[0u][9u] = ((uint16_t)(v_scratch));
-+    }
-+    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][10u]));
-+    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][10u] == 0u)) {
-+      v_scratch = 0u;
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
-+      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
-+      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
-+      v_scratch *= v_q_00;
-+      if (v_scratch < 2147483648u) {
-+        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
-+      } else {
-+        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
-+      }
-+      self->private_data.f_mcu_blocks[0u][10u] = ((uint16_t)(v_scratch));
-+    }
-+    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][16u]));
-+    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][16u] == 0u)) {
-+      v_scratch = 0u;
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
-+      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
-+      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
-+      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
-+      v_scratch += ((uint32_t)(4294967291u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
-+      v_scratch += ((uint32_t)(4294967282u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
-+      v_scratch += ((uint32_t)(4294967291u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
-+      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
-+      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
-+      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
-+      v_scratch *= v_q_00;
-+      if (v_scratch < 2147483648u) {
-+        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
-+      } else {
-+        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
-+      }
-+      self->private_data.f_mcu_blocks[0u][16u] = ((uint16_t)(v_scratch));
-+    }
-+    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][17u]));
-+    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][17u] == 0u)) {
-+      v_scratch = 0u;
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
-+      v_scratch += ((uint32_t)(4294967293u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
-+      v_scratch += ((uint32_t)(3u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
-+      v_scratch *= v_q_00;
-+      if (v_scratch < 2147483648u) {
-+        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
-+      } else {
-+        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
-+      }
-+      self->private_data.f_mcu_blocks[0u][17u] = ((uint16_t)(v_scratch));
-+    }
-+    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][24u]));
-+    if ((v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][24u] == 0u)) {
-+      v_scratch = 0u;
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
-+      v_scratch += ((uint32_t)(2u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
-+      v_scratch += ((uint32_t)(4294967294u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
-+      v_scratch *= v_q_00;
-+      if (v_scratch < 2147483648u) {
-+        v_scratch = ((uint32_t)(0u + (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
-+      } else {
-+        v_scratch = ((uint32_t)(0u - (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u))));
-+      }
-+      self->private_data.f_mcu_blocks[0u][24u] = ((uint16_t)(v_scratch));
-+    }
-+  } else {
-+    v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][1u];
-+    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][1u]));
-+    if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][1u] == 0u)) {
-+      v_limit = ((((uint32_t)(1u)) << v_al) - 1u);
-+      v_scratch = 0u;
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
-+      v_scratch += ((uint32_t)(4294967289u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
-+      v_scratch += ((uint32_t)(50u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
-+      v_scratch += ((uint32_t)(4294967246u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
-+      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
-+      v_scratch *= v_q_00;
-+      if (v_scratch < 2147483648u) {
-+        v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
-+      } else {
-+        v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
-+      }
-+      self->private_data.f_mcu_blocks[0u][1u] = ((uint16_t)(v_scratch));
-+    }
-+    v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][5u];
-+    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][2u]));
-+    if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][2u] == 0u)) {
-+      v_limit = ((((uint32_t)(1u)) << v_al) - 1u);
-+      v_scratch = 0u;
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
-+      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
-+      v_scratch += ((uint32_t)(4294967272u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
-+      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
-+      v_scratch *= v_q_00;
-+      if (v_scratch < 2147483648u) {
-+        v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
-+      } else {
-+        v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
-+      }
-+      self->private_data.f_mcu_blocks[0u][2u] = ((uint16_t)(v_scratch));
-+    }
-+    v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][2u];
-+    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][8u]));
-+    if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][8u] == 0u)) {
-+      v_limit = ((((uint32_t)(1u)) << v_al) - 1u);
-+      v_scratch = 0u;
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
-+      v_scratch += ((uint32_t)(4294967289u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
-+      v_scratch += ((uint32_t)(50u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
-+      v_scratch += ((uint32_t)(4294967246u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
-+      v_scratch += ((uint32_t)(7u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
-+      v_scratch *= v_q_00;
-+      if (v_scratch < 2147483648u) {
-+        v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
-+      } else {
-+        v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
-+      }
-+      self->private_data.f_mcu_blocks[0u][8u] = ((uint16_t)(v_scratch));
-+    }
-+    v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][4u];
-+    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][9u]));
-+    if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][9u] == 0u)) {
-+      v_limit = ((((uint32_t)(1u)) << v_al) - 1u);
-+      v_scratch = 0u;
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
-+      v_scratch += ((uint32_t)(10u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
-+      v_scratch += ((uint32_t)(4294967286u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
-+      v_scratch += ((uint32_t)(4294967286u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
-+      v_scratch += ((uint32_t)(10u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
-+      v_scratch += ((uint32_t)(1u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
-+      v_scratch *= v_q_00;
-+      if (v_scratch < 2147483648u) {
-+        v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
-+      } else {
-+        v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
-+      }
-+      self->private_data.f_mcu_blocks[0u][9u] = ((uint16_t)(v_scratch));
-+    }
-+    v_al = self->private_impl.f_block_smoothing_lowest_scan_al[a_csel][3u];
-+    v_q_xy = ((uint32_t)(self->private_impl.f_quant_tables[v_q][16u]));
-+    if ((v_al > 0u) && (v_q_xy > 0u) && (self->private_data.f_mcu_blocks[0u][16u] == 0u)) {
-+      v_limit = ((((uint32_t)(1u)) << v_al) - 1u);
-+      v_scratch = 0u;
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][1u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[0u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][1u])));
-+      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[1u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][1u])));
-+      v_scratch += ((uint32_t)(4294967272u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[2u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][1u])));
-+      v_scratch += ((uint32_t)(13u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[3u][4u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][0u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][1u])));
-+      v_scratch += ((uint32_t)(4294967295u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][2u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][3u])));
-+      v_scratch += ((uint32_t)(0u * wuffs_base__utility__sign_extend_convert_u16_u32(self->private_impl.f_block_smoothing_dc_values[4u][4u])));
-+      v_scratch *= v_q_00;
-+      if (v_scratch < 2147483648u) {
-+        v_scratch = ((uint32_t)(0u + wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u + v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
-+      } else {
-+        v_scratch = ((uint32_t)(0u - wuffs_base__u32__min(v_limit, (((uint32_t)(((uint32_t)(0u - v_scratch)) + (v_q_xy << 7u))) / (v_q_xy << 8u)))));
-+      }
-+      self->private_data.f_mcu_blocks[0u][16u] = ((uint16_t)(v_scratch));
-+    }
-+  }
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+// -------- func jpeg.decoder.decode_mcu
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint32_t
-+wuffs_jpeg__decoder__decode_mcu(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__slice_u8 a_workbuf,
-+    uint32_t a_mx,
-+    uint32_t a_my) {
-+  return (*self->private_impl.choosy_decode_mcu)(self, a_dst, a_workbuf, a_mx, a_my);
-+}
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint32_t
-+wuffs_jpeg__decoder__decode_mcu__choosy_default(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__slice_u8 a_workbuf,
-+    uint32_t a_mx,
-+    uint32_t a_my) {
-+  uint32_t v_ret = 0;
-+  uint64_t v_bits = 0;
-+  uint32_t v_n_bits = 0;
-+  uint8_t v_csel = 0;
-+  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
-+  wuffs_base__io_buffer* v_r = &u_r;
-+  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint32_t v_pos = 0;
-+  uint8_t v_dc_h = 0;
-+  uint32_t v_dc_symbol = 0;
-+  uint32_t v_dc_ht_fast = 0;
-+  uint32_t v_dc_bl = 0;
-+  uint32_t v_dc_code = 0;
-+  uint32_t v_dc_blm1 = 0;
-+  uint32_t v_dc_ht_slow = 0;
-+  uint16_t v_dc_value = 0;
-+  uint16_t v_dc_extend = 0;
-+  const uint16_t* v_ac_huff_table_fast = NULL;
-+  uint8_t v_ac_h = 0;
-+  uint32_t v_ac_symbol = 0;
-+  uint32_t v_ac_ht_fast = 0;
-+  uint32_t v_ac_bl = 0;
-+  uint32_t v_ac_code = 0;
-+  uint32_t v_ac_blm1 = 0;
-+  uint32_t v_ac_ht_slow = 0;
-+  uint16_t v_ac_value = 0;
-+  uint16_t v_ac_extend = 0;
-+  uint32_t v_ac_rrrr = 0;
-+  uint32_t v_ac_ssss = 0;
-+  uint32_t v_z = 0;
-+  uint32_t v_mcb = 0;
-+  uint64_t v_stride = 0;
-+  uint64_t v_offset = 0;
-+
-+  v_bits = self->private_impl.f_bitstream_bits;
-+  v_n_bits = self->private_impl.f_bitstream_n_bits;
-+  if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) {
-+    return 2u;
-+  }
-+  {
-+    wuffs_base__io_buffer* o_0_v_r = v_r;
-+    const uint8_t* o_0_iop_v_r = iop_v_r;
-+    const uint8_t* o_0_io0_v_r = io0_v_r;
-+    const uint8_t* o_0_io1_v_r = io1_v_r;
-+    const uint8_t* o_0_io2_v_r = io2_v_r;
-+    v_r = wuffs_private_impl__io_reader__set(
-+        &u_r,
-+        &iop_v_r,
-+        &io0_v_r,
-+        &io1_v_r,
-+        &io2_v_r,
-+        wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
-+        self->private_impl.f_bitstream_ri,
-+        self->private_impl.f_bitstream_wi),
-+        ((uint64_t)(self->private_impl.f_bitstream_ri)));
-+    do {
-+      while (self->private_impl.f_mcu_current_block < self->private_impl.f_mcu_num_blocks) {
-+        while (self->private_impl.f_mcu_zig_index <= 0u) {
-+          wuffs_private_impl__bulk_memset(&self->private_data.f_mcu_blocks[0], 1u * (size_t)128u, 0u);
-+          if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
-+            v_ret = 1u;
-+            goto label__goto_done__break;
-+          }
-+          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
-+          iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
-+          v_n_bits |= 56u;
-+          v_dc_h = self->private_impl.f_mcu_blocks_dc_hselector[self->private_impl.f_mcu_current_block];
-+          v_dc_ht_fast = ((uint32_t)(self->private_impl.f_huff_tables_fast[v_dc_h][(v_bits >> 56u)]));
-+          v_dc_bl = (v_dc_ht_fast >> 8u);
-+          if (v_n_bits >= v_dc_bl) {
-+            v_dc_symbol = (15u & v_dc_ht_fast);
-+            v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
-+            v_bits <<= (v_dc_bl & 63u);
-+            v_n_bits -= v_dc_bl;
-+          } else {
-+            v_dc_code = ((uint32_t)((v_bits >> 55u)));
-+            v_dc_blm1 = 8u;
-+            v_bits <<= 9u;
-+            v_n_bits -= 9u;
-+            while (true) {
-+              v_dc_ht_slow = self->private_impl.f_huff_tables_slow[v_dc_h][v_dc_blm1];
-+              if (v_dc_code < (v_dc_ht_slow >> 8u)) {
-+                v_dc_symbol = (15u & ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_dc_h][(255u & ((uint32_t)(v_dc_code + v_dc_ht_slow)))])));
-+                v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
-+                break;
-+              }
-+              v_dc_code = (((uint32_t)(v_dc_code << 1u)) | ((uint32_t)((v_bits >> 63u))));
-+              v_bits <<= 1u;
-+              v_n_bits -= 1u;
-+              v_dc_blm1 = ((v_dc_blm1 + 1u) & 15u);
-+              if (v_dc_blm1 == 0u) {
-+                v_dc_symbol = 0u;
-+                v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
-+                break;
-+              }
-+            }
-+          }
-+          v_dc_value = ((uint16_t)(((v_bits >> 32u) >> (32u - v_dc_symbol))));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+          v_dc_value += ((uint16_t)(v_dc_extend & ((uint16_t)(((uint16_t)(wuffs_base__utility__sign_extend_rshift_u64(v_bits, 63u))) ^ 65535u))));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+          v_bits <<= v_dc_symbol;
-+          v_n_bits -= v_dc_symbol;
-+          v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[self->private_impl.f_mcu_current_block]];
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+          self->private_impl.f_mcu_previous_dc_values[v_csel] += v_dc_value;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+          self->private_data.f_mcu_blocks[0u][0u] = self->private_impl.f_mcu_previous_dc_values[v_csel];
-+          self->private_impl.f_mcu_zig_index = 1u;
-+          break;
-+        }
-+        if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
-+          v_ret = 1u;
-+          goto label__goto_done__break;
-+        }
-+        if (v_n_bits < 16u) {
-+          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
-+        }
-+        v_z = 1u;
-+        self->private_impl.f_mcu_zig_index = 0u;
-+        v_ac_h = self->private_impl.f_mcu_blocks_ac_hselector[self->private_impl.f_mcu_current_block];
-+        v_ac_huff_table_fast = &self->private_impl.f_huff_tables_fast[v_ac_h][0u];
-+        while (v_z < 64u) {
-+          v_ac_ht_fast = ((uint32_t)(v_ac_huff_table_fast[(v_bits >> 56u)]));
-+          if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
-+            v_ret = 2u;
-+            goto label__goto_done__break;
-+          }
-+          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
-+          iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
-+          v_n_bits |= 56u;
-+          v_ac_bl = (v_ac_ht_fast >> 8u);
-+          if (v_n_bits >= v_ac_bl) {
-+            v_ac_symbol = (255u & v_ac_ht_fast);
-+            v_bits <<= (v_ac_bl & 63u);
-+            v_n_bits -= v_ac_bl;
-+          } else {
-+            v_ac_code = ((uint32_t)((v_bits >> 55u)));
-+            v_ac_blm1 = 8u;
-+            v_bits <<= 9u;
-+            v_n_bits -= 9u;
-+            while (true) {
-+              v_ac_ht_slow = self->private_impl.f_huff_tables_slow[v_ac_h][v_ac_blm1];
-+              if (v_ac_code < (v_ac_ht_slow >> 8u)) {
-+                v_ac_symbol = ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_ac_h][(255u & ((uint32_t)(v_ac_code + v_ac_ht_slow)))]));
-+                break;
-+              }
-+              v_ac_code = (((uint32_t)(v_ac_code << 1u)) | ((uint32_t)((v_bits >> 63u))));
-+              v_bits <<= 1u;
-+              v_n_bits -= 1u;
-+              v_ac_blm1 = ((v_ac_blm1 + 1u) & 15u);
-+              if (v_ac_blm1 == 0u) {
-+                v_ac_symbol = 0u;
-+                break;
-+              }
-+            }
-+          }
-+          v_ac_rrrr = (v_ac_symbol >> 4u);
-+          v_z += (v_ac_rrrr + 1u);
-+          v_ac_ssss = (v_ac_symbol & 15u);
-+          v_ac_extend = WUFFS_JPEG__EXTEND[v_ac_ssss];
-+          if (v_ac_ssss > 0u) {
-+            v_ac_value = ((uint16_t)((v_bits >> (64u - v_ac_ssss))));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+            v_ac_value += ((uint16_t)(v_ac_extend & ((uint16_t)(((uint16_t)(wuffs_base__utility__sign_extend_rshift_u64(v_bits, 63u))) ^ 65535u))));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+            v_bits <<= v_ac_ssss;
-+            v_n_bits -= v_ac_ssss;
-+            self->private_data.f_mcu_blocks[0u][WUFFS_JPEG__UNZIG[v_z]] = v_ac_value;
-+          } else if (v_ac_rrrr < 15u) {
-+            break;
-+          }
-+        }
-+        v_mcb = self->private_impl.f_mcu_current_block;
-+        self->private_impl.f_mcu_current_block += 1u;
-+        if (self->private_impl.f_test_only_interrupt_decode_mcu) {
-+          goto label__goto_done__break;
-+        }
-+        if ( ! self->private_impl.f_swizzle_immediately) {
-+          v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[v_mcb]];
-+          v_stride = ((uint64_t)(self->private_impl.f_components_workbuf_widths[v_csel]));
-+          v_offset = (self->private_impl.f_mcu_blocks_offset[v_mcb] + (((uint64_t)(self->private_impl.f_mcu_blocks_mx_mul[v_mcb])) * ((uint64_t)(a_mx))) + (((uint64_t)(self->private_impl.f_mcu_blocks_my_mul[v_mcb])) * ((uint64_t)(a_my))));
-+          if (v_offset <= ((uint64_t)(a_workbuf.len))) {
-+            wuffs_jpeg__decoder__decode_idct(self, wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset), v_stride, ((uint32_t)(self->private_impl.f_components_tq[v_csel])));
-+          }
-+        } else if (self->private_impl.f_num_components == 1u) {
-+          wuffs_jpeg__decoder__decode_idct(self, wuffs_base__make_slice_u8(self->private_data.f_swizzle_immediately_buffer, 64), 8u, ((uint32_t)(self->private_impl.f_components_tq[v_csel])));
-+          self->private_impl.f_swizzle_immediately_status = wuffs_jpeg__decoder__swizzle_gray(self,
-+              a_dst,
-+              wuffs_base__make_slice_u8(self->private_data.f_swizzle_immediately_buffer, 64),
-+              ((a_mx + 0u) * 8u),
-+              ((a_mx + 1u) * 8u),
-+              ((a_my + 0u) * 8u),
-+              ((a_my + 1u) * 8u),
-+              8u);
-+          if ( ! wuffs_base__status__is_ok(&self->private_impl.f_swizzle_immediately_status)) {
-+            v_ret = 3u;
-+            goto label__goto_done__break;
-+          }
-+          break;
-+        } else {
-+          v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[v_mcb]];
-+          v_stride = (8u * ((uint64_t)(self->private_impl.f_components_h[v_csel])));
-+          wuffs_jpeg__decoder__decode_idct(self, wuffs_base__make_slice_u8_ij(self->private_data.f_swizzle_immediately_buffer, self->private_impl.f_swizzle_immediately_b_offsets[v_mcb], 640), v_stride, ((uint32_t)(self->private_impl.f_components_tq[v_csel])));
-+          if (self->private_impl.f_mcu_current_block < self->private_impl.f_mcu_num_blocks) {
-+            continue;
-+          }
-+          self->private_impl.f_swizzle_immediately_status = wuffs_jpeg__decoder__swizzle_colorful(self,
-+              a_dst,
-+              wuffs_base__utility__empty_slice_u8(),
-+              ((a_mx + 0u) * 8u * ((uint32_t)(self->private_impl.f_max_incl_components_h))),
-+              ((a_mx + 1u) * 8u * ((uint32_t)(self->private_impl.f_max_incl_components_h))),
-+              ((a_my + 0u) * 8u * ((uint32_t)(self->private_impl.f_max_incl_components_v))),
-+              ((a_my + 1u) * 8u * ((uint32_t)(self->private_impl.f_max_incl_components_v))));
-+          if ( ! wuffs_base__status__is_ok(&self->private_impl.f_swizzle_immediately_status)) {
-+            v_ret = 3u;
-+            goto label__goto_done__break;
-+          }
-+          break;
-+        }
-+      }
-+      self->private_impl.f_mcu_current_block = 0u;
-+    } while (0);
-+    label__goto_done__break:;
-+    v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r)))));
-+    if (v_pos > self->private_impl.f_bitstream_wi) {
-+      v_ret = 2u;
-+    } else {
-+      self->private_impl.f_bitstream_ri = v_pos;
-+    }
-+    v_r = o_0_v_r;
-+    iop_v_r = o_0_iop_v_r;
-+    io0_v_r = o_0_io0_v_r;
-+    io1_v_r = o_0_io1_v_r;
-+    io2_v_r = o_0_io2_v_r;
-+  }
-+  self->private_impl.f_bitstream_bits = v_bits;
-+  self->private_impl.f_bitstream_n_bits = v_n_bits;
-+  return v_ret;
-+}
-+
-+// -------- func jpeg.decoder.decode_mcu_progressive_ac_high_bits
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint32_t
-+wuffs_jpeg__decoder__decode_mcu_progressive_ac_high_bits(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__slice_u8 a_workbuf,
-+    uint32_t a_mx,
-+    uint32_t a_my) {
-+  uint32_t v_ret = 0;
-+  uint64_t v_bits = 0;
-+  uint32_t v_n_bits = 0;
-+  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
-+  wuffs_base__io_buffer* v_r = &u_r;
-+  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint32_t v_pos = 0;
-+  const uint16_t* v_ac_huff_table_fast = NULL;
-+  uint8_t v_ac_h = 0;
-+  uint32_t v_ac_symbol = 0;
-+  uint32_t v_ac_ht_fast = 0;
-+  uint32_t v_ac_bl = 0;
-+  uint32_t v_ac_code = 0;
-+  uint32_t v_ac_blm1 = 0;
-+  uint32_t v_ac_ht_slow = 0;
-+  uint16_t v_ac_value = 0;
-+  uint16_t v_ac_extend = 0;
-+  uint32_t v_ac_rrrr = 0;
-+  uint32_t v_ac_ssss = 0;
-+  uint32_t v_z = 0;
-+
-+  if (self->private_impl.f_eob_run > 0u) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+    self->private_impl.f_eob_run -= 1u;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+    return 0u;
-+  }
-+  v_bits = self->private_impl.f_bitstream_bits;
-+  v_n_bits = self->private_impl.f_bitstream_n_bits;
-+  if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) {
-+    return 2u;
-+  }
-+  {
-+    wuffs_base__io_buffer* o_0_v_r = v_r;
-+    const uint8_t* o_0_iop_v_r = iop_v_r;
-+    const uint8_t* o_0_io0_v_r = io0_v_r;
-+    const uint8_t* o_0_io1_v_r = io1_v_r;
-+    const uint8_t* o_0_io2_v_r = io2_v_r;
-+    v_r = wuffs_private_impl__io_reader__set(
-+        &u_r,
-+        &iop_v_r,
-+        &io0_v_r,
-+        &io1_v_r,
-+        &io2_v_r,
-+        wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
-+        self->private_impl.f_bitstream_ri,
-+        self->private_impl.f_bitstream_wi),
-+        ((uint64_t)(self->private_impl.f_bitstream_ri)));
-+    do {
-+      do {
-+        if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
-+          v_ret = 1u;
-+          goto label__goto_done__break;
-+        }
-+        if (v_n_bits < 16u) {
-+          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
-+        }
-+        v_z = self->private_impl.f_mcu_zig_index;
-+        self->private_impl.f_mcu_zig_index = 0u;
-+        v_ac_h = self->private_impl.f_mcu_blocks_ac_hselector[0u];
-+        v_ac_huff_table_fast = &self->private_impl.f_huff_tables_fast[v_ac_h][0u];
-+        while (v_z <= ((uint32_t)(self->private_impl.f_scan_se))) {
-+          v_ac_ht_fast = ((uint32_t)(v_ac_huff_table_fast[(v_bits >> 56u)]));
-+          if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
-+            v_ret = 2u;
-+            goto label__goto_done__break;
-+          }
-+          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
-+          iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
-+          v_n_bits |= 56u;
-+          v_ac_bl = (v_ac_ht_fast >> 8u);
-+          if (v_n_bits >= v_ac_bl) {
-+            v_ac_symbol = (255u & v_ac_ht_fast);
-+            v_bits <<= (v_ac_bl & 63u);
-+            v_n_bits -= v_ac_bl;
-+          } else {
-+            v_ac_code = ((uint32_t)((v_bits >> 55u)));
-+            v_ac_blm1 = 8u;
-+            v_bits <<= 9u;
-+            v_n_bits -= 9u;
-+            while (true) {
-+              v_ac_ht_slow = self->private_impl.f_huff_tables_slow[v_ac_h][v_ac_blm1];
-+              if (v_ac_code < (v_ac_ht_slow >> 8u)) {
-+                v_ac_symbol = ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_ac_h][(255u & ((uint32_t)(v_ac_code + v_ac_ht_slow)))]));
-+                break;
-+              }
-+              v_ac_code = (((uint32_t)(v_ac_code << 1u)) | ((uint32_t)((v_bits >> 63u))));
-+              v_bits <<= 1u;
-+              v_n_bits -= 1u;
-+              v_ac_blm1 = ((v_ac_blm1 + 1u) & 15u);
-+              if (v_ac_blm1 == 0u) {
-+                v_ac_symbol = 0u;
-+                break;
-+              }
-+            }
-+          }
-+          v_ac_rrrr = (v_ac_symbol >> 4u);
-+          v_z += (v_ac_rrrr + 1u);
-+          v_ac_ssss = (v_ac_symbol & 15u);
-+          v_ac_extend = WUFFS_JPEG__EXTEND[v_ac_ssss];
-+          if (v_ac_ssss > 0u) {
-+            v_ac_value = ((uint16_t)((v_bits >> (64u - v_ac_ssss))));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+            v_ac_value += ((uint16_t)(v_ac_extend & ((uint16_t)(((uint16_t)(wuffs_base__utility__sign_extend_rshift_u64(v_bits, 63u))) ^ 65535u))));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+            v_bits <<= v_ac_ssss;
-+            v_n_bits -= v_ac_ssss;
-+            self->private_data.f_mcu_blocks[0u][WUFFS_JPEG__UNZIG[v_z]] = ((uint16_t)(((uint16_t)(v_ac_value << self->private_impl.f_scan_al))));
-+          } else if (v_ac_rrrr < 15u) {
-+            self->private_impl.f_eob_run = ((uint16_t)(((uint16_t)(((uint16_t)(((uint16_t)(1u)) << v_ac_rrrr)) - 1u))));
-+            if (v_ac_rrrr > 0u) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+              self->private_impl.f_eob_run += ((uint16_t)((v_bits >> (64u - v_ac_rrrr))));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+              v_bits <<= v_ac_rrrr;
-+              v_n_bits -= v_ac_rrrr;
-+            }
-+            break;
-+          }
-+        }
-+      } while (0);
-+    } while (0);
-+    label__goto_done__break:;
-+    v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r)))));
-+    if (v_pos > self->private_impl.f_bitstream_wi) {
-+      v_ret = 2u;
-+    } else {
-+      self->private_impl.f_bitstream_ri = v_pos;
-+    }
-+    v_r = o_0_v_r;
-+    iop_v_r = o_0_iop_v_r;
-+    io0_v_r = o_0_io0_v_r;
-+    io1_v_r = o_0_io1_v_r;
-+    io2_v_r = o_0_io2_v_r;
-+  }
-+  self->private_impl.f_bitstream_bits = v_bits;
-+  self->private_impl.f_bitstream_n_bits = v_n_bits;
-+  return v_ret;
-+}
-+
-+// -------- func jpeg.decoder.decode_mcu_progressive_ac_low_bit
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint32_t
-+wuffs_jpeg__decoder__decode_mcu_progressive_ac_low_bit(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__slice_u8 a_workbuf,
-+    uint32_t a_mx,
-+    uint32_t a_my) {
-+  uint32_t v_ret = 0;
-+  uint64_t v_bits = 0;
-+  uint32_t v_n_bits = 0;
-+  uint16_t v_one_lshift_scan_al = 0;
-+  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
-+  wuffs_base__io_buffer* v_r = &u_r;
-+  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint32_t v_pos = 0;
-+  const uint16_t* v_ac_huff_table_fast = NULL;
-+  uint8_t v_ac_h = 0;
-+  uint32_t v_ac_symbol = 0;
-+  uint32_t v_ac_ht_fast = 0;
-+  uint32_t v_ac_bl = 0;
-+  uint32_t v_ac_code = 0;
-+  uint32_t v_ac_blm1 = 0;
-+  uint32_t v_ac_ht_slow = 0;
-+  uint16_t v_ac_value = 0;
-+  uint32_t v_ac_rrrr = 0;
-+  uint32_t v_ac_ssss = 0;
-+  uint8_t v_unzig = 0;
-+  bool v_bit = false;
-+
-+  v_bits = self->private_impl.f_bitstream_bits;
-+  v_n_bits = self->private_impl.f_bitstream_n_bits;
-+  v_one_lshift_scan_al = ((uint16_t)(((uint16_t)(1u)) << self->private_impl.f_scan_al));
-+  if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) {
-+    return 2u;
-+  }
-+  {
-+    wuffs_base__io_buffer* o_0_v_r = v_r;
-+    const uint8_t* o_0_iop_v_r = iop_v_r;
-+    const uint8_t* o_0_io0_v_r = io0_v_r;
-+    const uint8_t* o_0_io1_v_r = io1_v_r;
-+    const uint8_t* o_0_io2_v_r = io2_v_r;
-+    v_r = wuffs_private_impl__io_reader__set(
-+        &u_r,
-+        &iop_v_r,
-+        &io0_v_r,
-+        &io1_v_r,
-+        &io2_v_r,
-+        wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
-+        self->private_impl.f_bitstream_ri,
-+        self->private_impl.f_bitstream_wi),
-+        ((uint64_t)(self->private_impl.f_bitstream_ri)));
-+    do {
-+      do {
-+        if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
-+          v_ret = 1u;
-+          goto label__goto_done__break;
-+        }
-+        while (true) {
-+          if (self->private_impl.f_eob_run > 0u) {
-+            break;
-+          }
-+          v_ac_h = self->private_impl.f_mcu_blocks_ac_hselector[0u];
-+          v_ac_huff_table_fast = &self->private_impl.f_huff_tables_fast[v_ac_h][0u];
-+          while (true) {
-+            if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
-+              v_ret = 2u;
-+              goto label__goto_done__break;
-+            }
-+            v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
-+            iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
-+            v_n_bits |= 56u;
-+            v_ac_ht_fast = ((uint32_t)(v_ac_huff_table_fast[(v_bits >> 56u)]));
-+            v_ac_bl = (v_ac_ht_fast >> 8u);
-+            if (v_n_bits >= v_ac_bl) {
-+              v_ac_symbol = (255u & v_ac_ht_fast);
-+              v_bits <<= (v_ac_bl & 63u);
-+              v_n_bits -= v_ac_bl;
-+            } else {
-+              v_ac_code = ((uint32_t)((v_bits >> 55u)));
-+              v_ac_blm1 = 8u;
-+              v_bits <<= 9u;
-+              v_n_bits -= 9u;
-+              while (true) {
-+                v_ac_ht_slow = self->private_impl.f_huff_tables_slow[v_ac_h][v_ac_blm1];
-+                if (v_ac_code < (v_ac_ht_slow >> 8u)) {
-+                  v_ac_symbol = ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_ac_h][(255u & ((uint32_t)(v_ac_code + v_ac_ht_slow)))]));
-+                  break;
-+                }
-+                v_ac_code = (((uint32_t)(v_ac_code << 1u)) | ((uint32_t)((v_bits >> 63u))));
-+                v_bits <<= 1u;
-+                v_n_bits -= 1u;
-+                v_ac_blm1 = ((v_ac_blm1 + 1u) & 15u);
-+                if (v_ac_blm1 == 0u) {
-+                  v_ac_symbol = 0u;
-+                  break;
-+                }
-+              }
-+            }
-+            v_ac_rrrr = (v_ac_symbol >> 4u);
-+            v_ac_ssss = (v_ac_symbol & 15u);
-+            v_ac_value = 0u;
-+            if (v_ac_ssss > 0u) {
-+              v_ac_value = ((uint16_t)(((uint16_t)(1u)) << self->private_impl.f_scan_al));
-+              if ((v_bits >> 63u) == 0u) {
-+                v_ac_value = ((uint16_t)(((uint16_t)(65535u)) << self->private_impl.f_scan_al));
-+              }
-+              v_bits <<= 1u;
-+              v_n_bits -= 1u;
-+            } else if (v_ac_rrrr < 15u) {
-+              self->private_impl.f_eob_run = ((uint16_t)(((uint16_t)(1u)) << v_ac_rrrr));
-+              if (v_ac_rrrr > 0u) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+                self->private_impl.f_eob_run += ((uint16_t)((v_bits >> (64u - v_ac_rrrr))));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+                v_bits <<= v_ac_rrrr;
-+                v_n_bits -= v_ac_rrrr;
-+              }
-+              goto label__goto_do_eob__break;
-+            }
-+            while (true) {
-+              v_unzig = WUFFS_JPEG__UNZIG[(1u + self->private_impl.f_mcu_zig_index)];
-+              if (self->private_data.f_mcu_blocks[0u][v_unzig] != 0u) {
-+                if (v_n_bits == 0u) {
-+                  if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
-+                    v_ret = 2u;
-+                    goto label__goto_done__break;
-+                  }
-+                  v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
-+                  iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
-+                  v_n_bits |= 56u;
-+                }
-+                v_bit = ((v_bits >> 63u) > 0u);
-+                v_bits <<= 1u;
-+                v_n_bits -= 1u;
-+                if (v_bit) {
-+                  if (self->private_data.f_mcu_blocks[0u][v_unzig] < 32768u) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+                    self->private_data.f_mcu_blocks[0u][v_unzig] += v_one_lshift_scan_al;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+                  } else {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+                    self->private_data.f_mcu_blocks[0u][v_unzig] -= v_one_lshift_scan_al;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+                  }
-+                }
-+              } else if (v_ac_rrrr <= 0u) {
-+                break;
-+              } else {
-+                v_ac_rrrr -= 1u;
-+              }
-+              if (self->private_impl.f_mcu_zig_index >= ((uint32_t)(self->private_impl.f_scan_se))) {
-+                break;
-+              }
-+              self->private_impl.f_mcu_zig_index += 1u;
-+            }
-+            if (v_ac_value != 0u) {
-+              self->private_data.f_mcu_blocks[0u][WUFFS_JPEG__UNZIG[(1u + self->private_impl.f_mcu_zig_index)]] = v_ac_value;
-+            }
-+            if (self->private_impl.f_mcu_zig_index >= ((uint32_t)(self->private_impl.f_scan_se))) {
-+              break;
-+            }
-+            self->private_impl.f_mcu_zig_index += 1u;
-+          }
-+          goto label__block__break;
-+        }
-+        label__goto_do_eob__break:;
-+        if (self->private_impl.f_eob_run <= 0u) {
-+          v_ret = 2u;
-+          goto label__goto_done__break;
-+        }
-+        while (true) {
-+          v_unzig = WUFFS_JPEG__UNZIG[(1u + self->private_impl.f_mcu_zig_index)];
-+          if (self->private_data.f_mcu_blocks[0u][v_unzig] != 0u) {
-+            if (v_n_bits == 0u) {
-+              if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
-+                v_ret = 2u;
-+                goto label__goto_done__break;
-+              }
-+              v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
-+              iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
-+              v_n_bits |= 56u;
-+            }
-+            v_bit = ((v_bits >> 63u) > 0u);
-+            v_bits <<= 1u;
-+            v_n_bits -= 1u;
-+            if (v_bit) {
-+              if (self->private_data.f_mcu_blocks[0u][v_unzig] < 32768u) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+                self->private_data.f_mcu_blocks[0u][v_unzig] += v_one_lshift_scan_al;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+              } else {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+                self->private_data.f_mcu_blocks[0u][v_unzig] -= v_one_lshift_scan_al;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+              }
-+            }
-+          }
-+          if (self->private_impl.f_mcu_zig_index >= ((uint32_t)(self->private_impl.f_scan_se))) {
-+            break;
-+          }
-+          self->private_impl.f_mcu_zig_index += 1u;
-+        }
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        self->private_impl.f_eob_run -= 1u;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+      } while (0);
-+      label__block__break:;
-+    } while (0);
-+    label__goto_done__break:;
-+    v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r)))));
-+    if (v_pos > self->private_impl.f_bitstream_wi) {
-+      v_ret = 2u;
-+    } else {
-+      self->private_impl.f_bitstream_ri = v_pos;
-+    }
-+    v_r = o_0_v_r;
-+    iop_v_r = o_0_iop_v_r;
-+    io0_v_r = o_0_io0_v_r;
-+    io1_v_r = o_0_io1_v_r;
-+    io2_v_r = o_0_io2_v_r;
-+  }
-+  self->private_impl.f_bitstream_bits = v_bits;
-+  self->private_impl.f_bitstream_n_bits = v_n_bits;
-+  return v_ret;
-+}
-+
-+// -------- func jpeg.decoder.decode_mcu_progressive_dc_high_bits
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint32_t
-+wuffs_jpeg__decoder__decode_mcu_progressive_dc_high_bits(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__slice_u8 a_workbuf,
-+    uint32_t a_mx,
-+    uint32_t a_my) {
-+  uint32_t v_ret = 0;
-+  uint64_t v_bits = 0;
-+  uint32_t v_n_bits = 0;
-+  uint8_t v_csel = 0;
-+  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
-+  wuffs_base__io_buffer* v_r = &u_r;
-+  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint32_t v_pos = 0;
-+  uint8_t v_dc_h = 0;
-+  uint32_t v_dc_symbol = 0;
-+  uint32_t v_dc_ht_fast = 0;
-+  uint32_t v_dc_bl = 0;
-+  uint32_t v_dc_code = 0;
-+  uint32_t v_dc_blm1 = 0;
-+  uint32_t v_dc_ht_slow = 0;
-+  uint16_t v_dc_value = 0;
-+  uint16_t v_dc_extend = 0;
-+
-+  v_bits = self->private_impl.f_bitstream_bits;
-+  v_n_bits = self->private_impl.f_bitstream_n_bits;
-+  if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) {
-+    return 2u;
-+  }
-+  {
-+    wuffs_base__io_buffer* o_0_v_r = v_r;
-+    const uint8_t* o_0_iop_v_r = iop_v_r;
-+    const uint8_t* o_0_io0_v_r = io0_v_r;
-+    const uint8_t* o_0_io1_v_r = io1_v_r;
-+    const uint8_t* o_0_io2_v_r = io2_v_r;
-+    v_r = wuffs_private_impl__io_reader__set(
-+        &u_r,
-+        &iop_v_r,
-+        &io0_v_r,
-+        &io1_v_r,
-+        &io2_v_r,
-+        wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
-+        self->private_impl.f_bitstream_ri,
-+        self->private_impl.f_bitstream_wi),
-+        ((uint64_t)(self->private_impl.f_bitstream_ri)));
-+    do {
-+      while (self->private_impl.f_mcu_current_block < self->private_impl.f_mcu_num_blocks) {
-+        if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
-+          v_ret = 1u;
-+          goto label__goto_done__break;
-+        }
-+        do {
-+          if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
-+            v_ret = 2u;
-+            goto label__goto_done__break;
-+          }
-+          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
-+          iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
-+          v_n_bits |= 56u;
-+          v_dc_h = self->private_impl.f_mcu_blocks_dc_hselector[self->private_impl.f_mcu_current_block];
-+          v_dc_ht_fast = ((uint32_t)(self->private_impl.f_huff_tables_fast[v_dc_h][(v_bits >> 56u)]));
-+          v_dc_bl = (v_dc_ht_fast >> 8u);
-+          if (v_n_bits >= v_dc_bl) {
-+            v_dc_symbol = (15u & v_dc_ht_fast);
-+            v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
-+            v_bits <<= (v_dc_bl & 63u);
-+            v_n_bits -= v_dc_bl;
-+          } else {
-+            v_dc_code = ((uint32_t)((v_bits >> 55u)));
-+            v_dc_blm1 = 8u;
-+            v_bits <<= 9u;
-+            v_n_bits -= 9u;
-+            while (true) {
-+              v_dc_ht_slow = self->private_impl.f_huff_tables_slow[v_dc_h][v_dc_blm1];
-+              if (v_dc_code < (v_dc_ht_slow >> 8u)) {
-+                v_dc_symbol = (15u & ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_dc_h][(255u & ((uint32_t)(v_dc_code + v_dc_ht_slow)))])));
-+                v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
-+                break;
-+              }
-+              v_dc_code = (((uint32_t)(v_dc_code << 1u)) | ((uint32_t)((v_bits >> 63u))));
-+              v_bits <<= 1u;
-+              v_n_bits -= 1u;
-+              v_dc_blm1 = ((v_dc_blm1 + 1u) & 15u);
-+              if (v_dc_blm1 == 0u) {
-+                v_dc_symbol = 0u;
-+                v_dc_extend = WUFFS_JPEG__EXTEND[v_dc_symbol];
-+                break;
-+              }
-+            }
-+          }
-+          v_dc_value = ((uint16_t)(((v_bits >> 32u) >> (32u - v_dc_symbol))));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+          v_dc_value += ((uint16_t)(v_dc_extend & ((uint16_t)(((uint16_t)(wuffs_base__utility__sign_extend_rshift_u64(v_bits, 63u))) ^ 65535u))));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+          v_bits <<= v_dc_symbol;
-+          v_n_bits -= v_dc_symbol;
-+          v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[self->private_impl.f_mcu_current_block]];
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+          self->private_impl.f_mcu_previous_dc_values[v_csel] += v_dc_value;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+          self->private_data.f_mcu_blocks[self->private_impl.f_mcu_current_block][0u] = ((uint16_t)(self->private_impl.f_mcu_previous_dc_values[v_csel] << self->private_impl.f_scan_al));
-+        } while (0);
-+        self->private_impl.f_mcu_current_block += 1u;
-+      }
-+      self->private_impl.f_mcu_current_block = 0u;
-+    } while (0);
-+    label__goto_done__break:;
-+    v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r)))));
-+    if (v_pos > self->private_impl.f_bitstream_wi) {
-+      v_ret = 2u;
-+    } else {
-+      self->private_impl.f_bitstream_ri = v_pos;
-+    }
-+    v_r = o_0_v_r;
-+    iop_v_r = o_0_iop_v_r;
-+    io0_v_r = o_0_io0_v_r;
-+    io1_v_r = o_0_io1_v_r;
-+    io2_v_r = o_0_io2_v_r;
-+  }
-+  self->private_impl.f_bitstream_bits = v_bits;
-+  self->private_impl.f_bitstream_n_bits = v_n_bits;
-+  return v_ret;
-+}
-+
-+// -------- func jpeg.decoder.decode_mcu_progressive_dc_low_bit
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint32_t
-+wuffs_jpeg__decoder__decode_mcu_progressive_dc_low_bit(
-+    wuffs_jpeg__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__slice_u8 a_workbuf,
-+    uint32_t a_mx,
-+    uint32_t a_my) {
-+  uint32_t v_ret = 0;
-+  uint64_t v_bits = 0;
-+  uint32_t v_n_bits = 0;
-+  uint16_t v_one_lshift_scan_al = 0;
-+  wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
-+  wuffs_base__io_buffer* v_r = &u_r;
-+  const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint32_t v_pos = 0;
-+
-+  v_bits = self->private_impl.f_bitstream_bits;
-+  v_n_bits = self->private_impl.f_bitstream_n_bits;
-+  v_one_lshift_scan_al = ((uint16_t)(((uint16_t)(1u)) << self->private_impl.f_scan_al));
-+  if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) {
-+    return 2u;
-+  }
-+  {
-+    wuffs_base__io_buffer* o_0_v_r = v_r;
-+    const uint8_t* o_0_iop_v_r = iop_v_r;
-+    const uint8_t* o_0_io0_v_r = io0_v_r;
-+    const uint8_t* o_0_io1_v_r = io1_v_r;
-+    const uint8_t* o_0_io2_v_r = io2_v_r;
-+    v_r = wuffs_private_impl__io_reader__set(
-+        &u_r,
-+        &iop_v_r,
-+        &io0_v_r,
-+        &io1_v_r,
-+        &io2_v_r,
-+        wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer,
-+        self->private_impl.f_bitstream_ri,
-+        self->private_impl.f_bitstream_wi),
-+        ((uint64_t)(self->private_impl.f_bitstream_ri)));
-+    do {
-+      while (self->private_impl.f_mcu_current_block < self->private_impl.f_mcu_num_blocks) {
-+        if (((uint64_t)(io2_v_r - iop_v_r)) < 264u) {
-+          v_ret = 1u;
-+          goto label__goto_done__break;
-+        }
-+        do {
-+          if (((uint64_t)(io2_v_r - iop_v_r)) < 8u) {
-+            v_ret = 2u;
-+            goto label__goto_done__break;
-+          }
-+          v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63u));
-+          iop_v_r += ((63u - (v_n_bits & 63u)) >> 3u);
-+          v_n_bits |= 56u;
-+          if ((v_bits >> 63u) != 0u) {
-+            self->private_data.f_mcu_blocks[self->private_impl.f_mcu_current_block][0u] |= v_one_lshift_scan_al;
-+          }
-+          v_bits <<= 1u;
-+          v_n_bits -= 1u;
-+        } while (0);
-+        self->private_impl.f_mcu_current_block += 1u;
-+      }
-+      self->private_impl.f_mcu_current_block = 0u;
-+    } while (0);
-+    label__goto_done__break:;
-+    v_pos = ((uint32_t)(wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r)))));
-+    if (v_pos > self->private_impl.f_bitstream_wi) {
-+      v_ret = 2u;
-+    } else {
-+      self->private_impl.f_bitstream_ri = v_pos;
-+    }
-+    v_r = o_0_v_r;
-+    iop_v_r = o_0_iop_v_r;
-+    io0_v_r = o_0_io0_v_r;
-+    io1_v_r = o_0_io1_v_r;
-+    io2_v_r = o_0_io2_v_r;
-+  }
-+  self->private_impl.f_bitstream_bits = v_bits;
-+  self->private_impl.f_bitstream_n_bits = v_n_bits;
-+  return v_ret;
-+}
-+
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JPEG)
-+
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JSON)
-+
-+// ---------------- Status Codes Implementations
-+
-+const char wuffs_json__error__bad_c0_control_code[] = "#json: bad C0 control code";
-+const char wuffs_json__error__bad_utf_8[] = "#json: bad UTF-8";
-+const char wuffs_json__error__bad_backslash_escape[] = "#json: bad backslash-escape";
-+const char wuffs_json__error__bad_input[] = "#json: bad input";
-+const char wuffs_json__error__bad_new_line_in_a_string[] = "#json: bad new-line in a string";
-+const char wuffs_json__error__bad_quirk_combination[] = "#json: bad quirk combination";
-+const char wuffs_json__error__unsupported_number_length[] = "#json: unsupported number length";
-+const char wuffs_json__error__unsupported_recursion_depth[] = "#json: unsupported recursion depth";
-+const char wuffs_json__error__internal_error_inconsistent_i_o[] = "#json: internal error: inconsistent I/O";
-+
-+// ---------------- Private Consts
-+
-+#define WUFFS_JSON__DECODER_NUMBER_LENGTH_MAX_INCL 99u
-+
-+static const uint8_t
-+WUFFS_JSON__LUT_BACKSLASHES[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 3u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 162u, 0u, 0u, 0u, 0u, 5u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 175u,
-+  7u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 4u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 220u, 0u, 0u, 0u,
-+  0u, 1u, 136u, 0u, 0u, 2u, 140u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 138u, 0u,
-+  0u, 0u, 141u, 0u, 137u, 0u, 6u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+};
-+
-+static const uint8_t
-+WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_QUIRKS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 1u, 3u, 4u, 5u, 6u, 7u, 10u,
-+};
-+
-+static const uint8_t
-+WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_CHARS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 7u, 27u, 10u, 63u, 39u, 11u, 0u,
-+};
-+
-+static const uint8_t
-+WUFFS_JSON__LUT_CHARS[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  128u, 129u, 130u, 131u, 132u, 133u, 134u, 135u,
-+  136u, 137u, 138u, 139u, 140u, 141u, 142u, 143u,
-+  144u, 145u, 146u, 147u, 148u, 149u, 150u, 151u,
-+  152u, 153u, 154u, 155u, 156u, 157u, 158u, 159u,
-+  0u, 0u, 1u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 2u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u,
-+  16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u,
-+  16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u,
-+  16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u,
-+  16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u,
-+  16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u,
-+  16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u,
-+  16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u,
-+  32u, 32u, 3u, 3u, 3u, 3u, 3u, 3u,
-+  3u, 3u, 3u, 3u, 3u, 3u, 3u, 3u,
-+  3u, 3u, 3u, 3u, 3u, 3u, 3u, 3u,
-+  3u, 3u, 3u, 3u, 3u, 3u, 3u, 3u,
-+  4u, 4u, 4u, 4u, 4u, 4u, 4u, 4u,
-+  4u, 4u, 4u, 4u, 4u, 4u, 4u, 4u,
-+  5u, 5u, 5u, 5u, 5u, 32u, 32u, 32u,
-+  32u, 32u, 32u, 32u, 32u, 32u, 32u, 32u,
-+};
-+
-+#define WUFFS_JSON__CLASS_WHITESPACE 0u
-+
-+#define WUFFS_JSON__CLASS_STRING 1u
-+
-+#define WUFFS_JSON__CLASS_COMMA 2u
-+
-+#define WUFFS_JSON__CLASS_COLON 3u
-+
-+#define WUFFS_JSON__CLASS_NUMBER 4u
-+
-+#define WUFFS_JSON__CLASS_OPEN_CURLY_BRACE 5u
-+
-+#define WUFFS_JSON__CLASS_CLOSE_CURLY_BRACE 6u
-+
-+#define WUFFS_JSON__CLASS_OPEN_SQUARE_BRACKET 7u
-+
-+#define WUFFS_JSON__CLASS_CLOSE_SQUARE_BRACKET 8u
-+
-+#define WUFFS_JSON__CLASS_FALSE 9u
-+
-+#define WUFFS_JSON__CLASS_TRUE 10u
-+
-+#define WUFFS_JSON__CLASS_NULL_NAN_INF 11u
-+
-+#define WUFFS_JSON__CLASS_COMMENT 12u
-+
-+#define WUFFS_JSON__EXPECT_VALUE 7858u
-+
-+#define WUFFS_JSON__EXPECT_NON_STRING_VALUE 7856u
-+
-+#define WUFFS_JSON__EXPECT_STRING 4098u
-+
-+#define WUFFS_JSON__EXPECT_COMMA 4100u
-+
-+#define WUFFS_JSON__EXPECT_COLON 4104u
-+
-+#define WUFFS_JSON__EXPECT_NUMBER 4112u
-+
-+#define WUFFS_JSON__EXPECT_CLOSE_CURLY_BRACE 4160u
-+
-+#define WUFFS_JSON__EXPECT_CLOSE_SQUARE_BRACKET 4352u
-+
-+static const uint8_t
-+WUFFS_JSON__LUT_CLASSES[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
-+  15u, 0u, 0u, 15u, 15u, 0u, 15u, 15u,
-+  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
-+  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
-+  0u, 15u, 1u, 15u, 15u, 15u, 15u, 15u,
-+  15u, 15u, 15u, 11u, 2u, 4u, 15u, 12u,
-+  4u, 4u, 4u, 4u, 4u, 4u, 4u, 4u,
-+  4u, 4u, 3u, 15u, 15u, 15u, 15u, 15u,
-+  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
-+  15u, 11u, 15u, 15u, 15u, 15u, 11u, 15u,
-+  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
-+  15u, 15u, 15u, 7u, 15u, 8u, 15u, 15u,
-+  15u, 15u, 15u, 15u, 15u, 15u, 9u, 15u,
-+  15u, 11u, 15u, 15u, 15u, 15u, 11u, 15u,
-+  15u, 15u, 15u, 15u, 10u, 15u, 15u, 15u,
-+  15u, 15u, 15u, 5u, 15u, 6u, 15u, 15u,
-+  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
-+  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
-+  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
-+  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
-+  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
-+  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
-+  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
-+  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
-+  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
-+  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
-+  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
-+  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
-+  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
-+  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
-+  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
-+  15u, 15u, 15u, 15u, 15u, 15u, 15u, 15u,
-+};
-+
-+static const uint8_t
-+WUFFS_JSON__LUT_DECIMAL_DIGITS[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  128u, 129u, 130u, 131u, 132u, 133u, 134u, 135u,
-+  136u, 137u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+};
-+
-+static const uint8_t
-+WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  128u, 129u, 130u, 131u, 132u, 133u, 134u, 135u,
-+  136u, 137u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 138u, 139u, 140u, 141u, 142u, 143u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 138u, 139u, 140u, 141u, 142u, 143u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+};
-+
-+#define WUFFS_JSON__QUIRKS_BASE 1225364480u
-+
-+#define WUFFS_JSON__QUIRKS_COUNT 21u
-+
-+// ---------------- Private Initializer Prototypes
-+
-+// ---------------- Private Function Prototypes
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint32_t
-+wuffs_json__decoder__decode_number(
-+    wuffs_json__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint32_t
-+wuffs_json__decoder__decode_digits(
-+    wuffs_json__decoder* self,
-+    wuffs_base__io_buffer* a_src,
-+    uint32_t a_n);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_json__decoder__decode_leading(
-+    wuffs_json__decoder* self,
-+    wuffs_base__token_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_json__decoder__decode_comment(
-+    wuffs_json__decoder* self,
-+    wuffs_base__token_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_json__decoder__decode_inf_nan(
-+    wuffs_json__decoder* self,
-+    wuffs_base__token_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_json__decoder__decode_trailer(
-+    wuffs_json__decoder* self,
-+    wuffs_base__token_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+// ---------------- VTables
-+
-+const wuffs_base__token_decoder__func_ptrs
-+wuffs_json__decoder__func_ptrs_for__wuffs_base__token_decoder = {
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__token_buffer*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__slice_u8))(&wuffs_json__decoder__decode_tokens),
-+  (uint64_t(*)(const void*,
-+      uint32_t))(&wuffs_json__decoder__get_quirk),
-+  (wuffs_base__status(*)(void*,
-+      uint32_t,
-+      uint64_t))(&wuffs_json__decoder__set_quirk),
-+  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_json__decoder__workbuf_len),
-+};
-+
-+// ---------------- Initializer Implementations
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_json__decoder__initialize(
-+    wuffs_json__decoder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options){
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (sizeof(*self) != sizeof_star_self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  }
-+  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
-+      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+  }
-+
-+  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
-+    // The whole point of this if-check is to detect an uninitialized *self.
-+    // We disable the warning on GCC. Clang-5.0 does not have this warning.
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+#endif
-+    if (self->private_impl.magic != 0) {
-+      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+    }
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+  } else {
-+    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
-+      memset(self, 0, sizeof(*self));
-+      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-+    } else {
-+      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+    }
-+  }
-+
-+  self->private_impl.magic = WUFFS_BASE__MAGIC;
-+  self->private_impl.vtable_for__wuffs_base__token_decoder.vtable_name =
-+      wuffs_base__token_decoder__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__token_decoder.function_pointers =
-+      (const void*)(&wuffs_json__decoder__func_ptrs_for__wuffs_base__token_decoder);
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+wuffs_json__decoder*
-+wuffs_json__decoder__alloc(void) {
-+  wuffs_json__decoder* x =
-+      (wuffs_json__decoder*)(calloc(1, sizeof(wuffs_json__decoder)));
-+  if (!x) {
-+    return NULL;
-+  }
-+  if (wuffs_json__decoder__initialize(
-+      x, sizeof(wuffs_json__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+    free(x);
-+    return NULL;
-+  }
-+  return x;
-+}
-+
-+size_t
-+sizeof__wuffs_json__decoder(void) {
-+  return sizeof(wuffs_json__decoder);
-+}
-+
-+// ---------------- Function Implementations
-+
-+// -------- func json.decoder.get_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_json__decoder__get_quirk(
-+    const wuffs_json__decoder* self,
-+    uint32_t a_key) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  uint32_t v_key = 0;
-+
-+  if (a_key >= 1225364480u) {
-+    v_key = (a_key - 1225364480u);
-+    if (v_key < 21u) {
-+      if (self->private_impl.f_quirks[v_key]) {
-+        return 1u;
-+      }
-+    }
-+  }
-+  return 0u;
-+}
-+
-+// -------- func json.decoder.set_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_json__decoder__set_quirk(
-+    wuffs_json__decoder* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+
-+  if (a_key >= 1225364480u) {
-+    a_key -= 1225364480u;
-+    if (a_key < 21u) {
-+      self->private_impl.f_quirks[a_key] = (a_value > 0u);
-+      return wuffs_base__make_status(NULL);
-+    }
-+  }
-+  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+}
-+
-+// -------- func json.decoder.workbuf_len
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_json__decoder__workbuf_len(
-+    const wuffs_json__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+
-+  return wuffs_base__utility__empty_range_ii_u64();
-+}
-+
-+// -------- func json.decoder.decode_tokens
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_json__decoder__decode_tokens(
-+    wuffs_json__decoder* self,
-+    wuffs_base__token_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_dst || !a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 1)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint32_t v_vminor = 0;
-+  uint32_t v_number_length = 0;
-+  uint32_t v_number_status = 0;
-+  uint32_t v_string_length = 0;
-+  uint32_t v_whitespace_length = 0;
-+  uint32_t v_depth = 0;
-+  uint32_t v_stack_byte = 0;
-+  uint32_t v_stack_bit = 0;
-+  uint32_t v_match = 0;
-+  uint32_t v_c32 = 0;
-+  uint8_t v_c8 = 0;
-+  uint8_t v_backslash = 0;
-+  uint8_t v_char = 0;
-+  uint8_t v_class = 0;
-+  uint32_t v_multi_byte_utf8 = 0;
-+  uint8_t v_backslash_x_ok = 0;
-+  uint8_t v_backslash_x_value = 0;
-+  uint32_t v_backslash_x_string = 0;
-+  uint8_t v_uni4_ok = 0;
-+  uint64_t v_uni4_string = 0;
-+  uint32_t v_uni4_value = 0;
-+  uint32_t v_uni4_high_surrogate = 0;
-+  uint8_t v_uni8_ok = 0;
-+  uint64_t v_uni8_string = 0;
-+  uint32_t v_uni8_value = 0;
-+  uint32_t v_expect = 0;
-+  uint32_t v_expect_after_value = 0;
-+
-+  wuffs_base__token* iop_a_dst = NULL;
-+  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-+    }
-+  }
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_tokens;
-+  if (coro_susp_point) {
-+    v_depth = self->private_data.s_decode_tokens.v_depth;
-+    v_expect = self->private_data.s_decode_tokens.v_expect;
-+    v_expect_after_value = self->private_data.s_decode_tokens.v_expect_after_value;
-+  }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_end_of_data) {
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-+    }
-+    if (self->private_impl.f_quirks[18u]) {
-+      if (self->private_impl.f_quirks[11u] || self->private_impl.f_quirks[12u] || self->private_impl.f_quirks[17u]) {
-+        status = wuffs_base__make_status(wuffs_json__error__bad_quirk_combination);
-+        goto exit;
-+      }
-+    }
-+    if (self->private_impl.f_quirks[15u] || self->private_impl.f_quirks[16u]) {
-+      if (a_dst) {
-+        a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+      }
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      status = wuffs_json__decoder__decode_leading(self, a_dst, a_src);
-+      if (a_dst) {
-+        iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
-+      }
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+    }
-+    v_expect = 7858u;
-+    label__outer__continue:;
-+    while (true) {
-+      while (true) {
-+        if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
-+          goto label__outer__continue;
-+        }
-+        v_whitespace_length = 0u;
-+        v_c8 = 0u;
-+        v_class = 0u;
-+        while (true) {
-+          if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+            if (v_whitespace_length > 0u) {
-+              *iop_a_dst++ = wuffs_base__make_token(
-+                  (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                  (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+              v_whitespace_length = 0u;
-+            }
-+            if (a_src && a_src->meta.closed) {
-+              status = wuffs_base__make_status(wuffs_json__error__bad_input);
-+              goto exit;
-+            }
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
-+            goto label__outer__continue;
-+          }
-+          v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+          v_class = WUFFS_JSON__LUT_CLASSES[v_c8];
-+          if (v_class != 0u) {
-+            break;
-+          }
-+          iop_a_src += 1u;
-+          if (v_whitespace_length >= 65534u) {
-+            *iop_a_dst++ = wuffs_base__make_token(
-+                (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                (((uint64_t)(65535u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+            v_whitespace_length = 0u;
-+            goto label__outer__continue;
-+          }
-+          v_whitespace_length += 1u;
-+        }
-+        if (v_whitespace_length > 0u) {
-+          *iop_a_dst++ = wuffs_base__make_token(
-+              (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+              (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+          v_whitespace_length = 0u;
-+          if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+            goto label__outer__continue;
-+          }
-+        }
-+        if (0u == (v_expect & (((uint32_t)(1u)) << v_class))) {
-+          status = wuffs_base__make_status(wuffs_json__error__bad_input);
-+          goto exit;
-+        }
-+        if (v_class == 1u) {
-+          *iop_a_dst++ = wuffs_base__make_token(
-+              (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+          iop_a_src += 1u;
-+          label__string_loop_outer__continue:;
-+          while (true) {
-+            if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
-+              continue;
-+            }
-+            v_string_length = 0u;
-+            while (true) {
-+              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+                if (v_string_length > 0u) {
-+                  *iop_a_dst++ = wuffs_base__make_token(
-+                      (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                      (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                  v_string_length = 0u;
-+                }
-+                if (a_src && a_src->meta.closed) {
-+                  status = wuffs_base__make_status(wuffs_json__error__bad_input);
-+                  goto exit;
-+                }
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
-+                goto label__string_loop_outer__continue;
-+              }
-+              while (((uint64_t)(io2_a_src - iop_a_src)) > 4u) {
-+                v_c32 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+                if (0u != (WUFFS_JSON__LUT_CHARS[(255u & (v_c32 >> 0u))] |
-+                    WUFFS_JSON__LUT_CHARS[(255u & (v_c32 >> 8u))] |
-+                    WUFFS_JSON__LUT_CHARS[(255u & (v_c32 >> 16u))] |
-+                    WUFFS_JSON__LUT_CHARS[(255u & (v_c32 >> 24u))])) {
-+                  break;
-+                }
-+                iop_a_src += 4u;
-+                if (v_string_length > 65527u) {
-+                  *iop_a_dst++ = wuffs_base__make_token(
-+                      (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                      (((uint64_t)((v_string_length + 4u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                  v_string_length = 0u;
-+                  goto label__string_loop_outer__continue;
-+                }
-+                v_string_length += 4u;
-+              }
-+              v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+              v_char = WUFFS_JSON__LUT_CHARS[v_c8];
-+              if (v_char == 0u) {
-+                iop_a_src += 1u;
-+                if (v_string_length >= 65531u) {
-+                  *iop_a_dst++ = wuffs_base__make_token(
-+                      (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                      (((uint64_t)(65532u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                  v_string_length = 0u;
-+                  goto label__string_loop_outer__continue;
-+                }
-+                v_string_length += 1u;
-+                continue;
-+              } else if (v_char == 1u) {
-+                if (v_string_length != 0u) {
-+                  *iop_a_dst++ = wuffs_base__make_token(
-+                      (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                      (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                  v_string_length = 0u;
-+                }
-+                goto label__string_loop_outer__break;
-+              } else if (v_char == 2u) {
-+                if (v_string_length > 0u) {
-+                  *iop_a_dst++ = wuffs_base__make_token(
-+                      (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                      (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                  v_string_length = 0u;
-+                  if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+                    goto label__string_loop_outer__continue;
-+                  }
-+                }
-+                if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
-+                  if (a_src && a_src->meta.closed) {
-+                    status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
-+                    goto exit;
-+                  }
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
-+                  goto label__string_loop_outer__continue;
-+                }
-+                v_c8 = ((uint8_t)(((uint16_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8u))));
-+                v_backslash = WUFFS_JSON__LUT_BACKSLASHES[v_c8];
-+                if (((uint8_t)(v_backslash & 128u)) != 0u) {
-+                  iop_a_src += 2u;
-+                  *iop_a_dst++ = wuffs_base__make_token(
-+                      (((uint64_t)((6291456u | ((uint32_t)(((uint8_t)(v_backslash & 127u))))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                      (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                  goto label__string_loop_outer__continue;
-+                } else if (v_backslash != 0u) {
-+                  if (self->private_impl.f_quirks[WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_QUIRKS[((uint8_t)(v_backslash & 7u))]]) {
-+                    iop_a_src += 2u;
-+                    *iop_a_dst++ = wuffs_base__make_token(
-+                        (((uint64_t)((6291456u | ((uint32_t)(WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_CHARS[((uint8_t)(v_backslash & 7u))]))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                        (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                    goto label__string_loop_outer__continue;
-+                  }
-+                } else if (v_c8 == 117u) {
-+                  if (((uint64_t)(io2_a_src - iop_a_src)) < 6u) {
-+                    if (a_src && a_src->meta.closed) {
-+                      status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
-+                      goto exit;
-+                    }
-+                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
-+                    goto label__string_loop_outer__continue;
-+                  }
-+                  v_uni4_string = (((uint64_t)(wuffs_base__peek_u48le__no_bounds_check(iop_a_src))) >> 16u);
-+                  v_uni4_value = 0u;
-+                  v_uni4_ok = 128u;
-+                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 0u))];
-+                  v_uni4_ok &= v_c8;
-+                  v_uni4_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 12u);
-+                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 8u))];
-+                  v_uni4_ok &= v_c8;
-+                  v_uni4_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 8u);
-+                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 16u))];
-+                  v_uni4_ok &= v_c8;
-+                  v_uni4_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 4u);
-+                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 24u))];
-+                  v_uni4_ok &= v_c8;
-+                  v_uni4_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 0u);
-+                  if (v_uni4_ok == 0u) {
-+                  } else if ((v_uni4_value < 55296u) || (57343u < v_uni4_value)) {
-+                    iop_a_src += 6u;
-+                    *iop_a_dst++ = wuffs_base__make_token(
-+                        (((uint64_t)((6291456u | v_uni4_value))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                        (((uint64_t)(6u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                    goto label__string_loop_outer__continue;
-+                  } else if (v_uni4_value >= 56320u) {
-+                  } else {
-+                    if (((uint64_t)(io2_a_src - iop_a_src)) < 12u) {
-+                      if (a_src && a_src->meta.closed) {
-+                        if (self->private_impl.f_quirks[20u]) {
-+                          iop_a_src += 6u;
-+                          *iop_a_dst++ = wuffs_base__make_token(
-+                              (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                              (((uint64_t)(6u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                          goto label__string_loop_outer__continue;
-+                        }
-+                        status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
-+                        goto exit;
-+                      }
-+                      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
-+                      goto label__string_loop_outer__continue;
-+                    }
-+                    v_uni4_string = (wuffs_base__peek_u64le__no_bounds_check(iop_a_src + 4u) >> 16u);
-+                    if (((255u & (v_uni4_string >> 0u)) != 92u) || ((255u & (v_uni4_string >> 8u)) != 117u)) {
-+                      v_uni4_high_surrogate = 0u;
-+                      v_uni4_value = 0u;
-+                      v_uni4_ok = 0u;
-+                    } else {
-+                      v_uni4_high_surrogate = (65536u + ((v_uni4_value - 55296u) << 10u));
-+                      v_uni4_value = 0u;
-+                      v_uni4_ok = 128u;
-+                      v_uni4_string >>= 16u;
-+                      v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 0u))];
-+                      v_uni4_ok &= v_c8;
-+                      v_uni4_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 12u);
-+                      v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 8u))];
-+                      v_uni4_ok &= v_c8;
-+                      v_uni4_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 8u);
-+                      v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 16u))];
-+                      v_uni4_ok &= v_c8;
-+                      v_uni4_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 4u);
-+                      v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni4_string >> 24u))];
-+                      v_uni4_ok &= v_c8;
-+                      v_uni4_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 0u);
-+                    }
-+                    if ((v_uni4_ok != 0u) && (56320u <= v_uni4_value) && (v_uni4_value <= 57343u)) {
-+                      v_uni4_value -= 56320u;
-+                      iop_a_src += 12u;
-+                      *iop_a_dst++ = wuffs_base__make_token(
-+                          (((uint64_t)((6291456u | v_uni4_high_surrogate | v_uni4_value))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                          (((uint64_t)(12u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                      goto label__string_loop_outer__continue;
-+                    }
-+                  }
-+                  if (self->private_impl.f_quirks[20u]) {
-+                    if (((uint64_t)(io2_a_src - iop_a_src)) < 6u) {
-+                      status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
-+                      goto exit;
-+                    }
-+                    iop_a_src += 6u;
-+                    *iop_a_dst++ = wuffs_base__make_token(
-+                        (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                        (((uint64_t)(6u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                    goto label__string_loop_outer__continue;
-+                  }
-+                } else if ((v_c8 == 85u) && self->private_impl.f_quirks[2u]) {
-+                  if (((uint64_t)(io2_a_src - iop_a_src)) < 10u) {
-+                    if (a_src && a_src->meta.closed) {
-+                      status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
-+                      goto exit;
-+                    }
-+                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
-+                    goto label__string_loop_outer__continue;
-+                  }
-+                  v_uni8_string = wuffs_base__peek_u64le__no_bounds_check(iop_a_src + 2u);
-+                  v_uni8_value = 0u;
-+                  v_uni8_ok = 128u;
-+                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 0u))];
-+                  v_uni8_ok &= v_c8;
-+                  v_uni8_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 28u);
-+                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 8u))];
-+                  v_uni8_ok &= v_c8;
-+                  v_uni8_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 24u);
-+                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 16u))];
-+                  v_uni8_ok &= v_c8;
-+                  v_uni8_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 20u);
-+                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 24u))];
-+                  v_uni8_ok &= v_c8;
-+                  v_uni8_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 16u);
-+                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 32u))];
-+                  v_uni8_ok &= v_c8;
-+                  v_uni8_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 12u);
-+                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 40u))];
-+                  v_uni8_ok &= v_c8;
-+                  v_uni8_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 8u);
-+                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 48u))];
-+                  v_uni8_ok &= v_c8;
-+                  v_uni8_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 4u);
-+                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_uni8_string >> 56u))];
-+                  v_uni8_ok &= v_c8;
-+                  v_uni8_value |= (((uint32_t)(((uint8_t)(v_c8 & 15u)))) << 0u);
-+                  if (v_uni8_ok == 0u) {
-+                  } else if ((v_uni8_value < 55296u) || ((57343u < v_uni8_value) && (v_uni8_value <= 1114111u))) {
-+                    iop_a_src += 10u;
-+                    *iop_a_dst++ = wuffs_base__make_token(
-+                        (((uint64_t)((6291456u | (v_uni8_value & 2097151u)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                        (((uint64_t)(10u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                    goto label__string_loop_outer__continue;
-+                  } else if (self->private_impl.f_quirks[20u]) {
-+                    iop_a_src += 10u;
-+                    *iop_a_dst++ = wuffs_base__make_token(
-+                        (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                        (((uint64_t)(10u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                    goto label__string_loop_outer__continue;
-+                  }
-+                } else if ((v_c8 == 120u) && self->private_impl.f_quirks[9u]) {
-+                  if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
-+                    if (a_src && a_src->meta.closed) {
-+                      status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
-+                      goto exit;
-+                    }
-+                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
-+                    goto label__string_loop_outer__continue;
-+                  }
-+                  v_backslash_x_string = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+                  v_backslash_x_ok = 128u;
-+                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_backslash_x_string >> 16u))];
-+                  v_backslash_x_ok &= v_c8;
-+                  v_backslash_x_value = ((uint8_t)(((uint8_t)(((uint8_t)(v_c8 & 15u)) << 4u))));
-+                  v_c8 = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255u & (v_backslash_x_string >> 24u))];
-+                  v_backslash_x_ok &= v_c8;
-+                  v_backslash_x_value = ((uint8_t)(((uint8_t)(v_backslash_x_value | ((uint8_t)(v_c8 & 15u))))));
-+                  if ((v_backslash_x_ok == 0u) || ((v_backslash_x_string & 65535u) != 30812u)) {
-+                    status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
-+                    goto exit;
-+                  }
-+                  iop_a_src += 4u;
-+                  *iop_a_dst++ = wuffs_base__make_token(
-+                      (((uint64_t)((6291456u | ((uint32_t)(v_backslash_x_value))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                      (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                  goto label__string_loop_outer__continue;
-+                }
-+                status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
-+                goto exit;
-+              } else if (v_char == 3u) {
-+                if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
-+                  if (v_string_length > 0u) {
-+                    *iop_a_dst++ = wuffs_base__make_token(
-+                        (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                        (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                    v_string_length = 0u;
-+                    if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+                      goto label__string_loop_outer__continue;
-+                    }
-+                  }
-+                  if (a_src && a_src->meta.closed) {
-+                    if (self->private_impl.f_quirks[20u]) {
-+                      *iop_a_dst++ = wuffs_base__make_token(
-+                          (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                      iop_a_src += 1u;
-+                      goto label__string_loop_outer__continue;
-+                    }
-+                    status = wuffs_base__make_status(wuffs_json__error__bad_utf_8);
-+                    goto exit;
-+                  }
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11);
-+                  goto label__string_loop_outer__continue;
-+                }
-+                v_multi_byte_utf8 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-+                if ((v_multi_byte_utf8 & 49152u) == 32768u) {
-+                  v_multi_byte_utf8 = ((1984u & ((uint32_t)(v_multi_byte_utf8 << 6u))) | (63u & (v_multi_byte_utf8 >> 8u)));
-+                  iop_a_src += 2u;
-+                  if (v_string_length >= 65528u) {
-+                    *iop_a_dst++ = wuffs_base__make_token(
-+                        (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                        (((uint64_t)((v_string_length + 2u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                    v_string_length = 0u;
-+                    goto label__string_loop_outer__continue;
-+                  }
-+                  v_string_length += 2u;
-+                  continue;
-+                }
-+              } else if (v_char == 4u) {
-+                if (((uint64_t)(io2_a_src - iop_a_src)) < 3u) {
-+                  if (v_string_length > 0u) {
-+                    *iop_a_dst++ = wuffs_base__make_token(
-+                        (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                        (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                    v_string_length = 0u;
-+                    if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+                      goto label__string_loop_outer__continue;
-+                    }
-+                  }
-+                  if (a_src && a_src->meta.closed) {
-+                    if (self->private_impl.f_quirks[20u]) {
-+                      *iop_a_dst++ = wuffs_base__make_token(
-+                          (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                      iop_a_src += 1u;
-+                      goto label__string_loop_outer__continue;
-+                    }
-+                    status = wuffs_base__make_status(wuffs_json__error__bad_utf_8);
-+                    goto exit;
-+                  }
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(12);
-+                  goto label__string_loop_outer__continue;
-+                }
-+                v_multi_byte_utf8 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
-+                if ((v_multi_byte_utf8 & 12632064u) == 8421376u) {
-+                  v_multi_byte_utf8 = ((61440u & ((uint32_t)(v_multi_byte_utf8 << 12u))) | (4032u & (v_multi_byte_utf8 >> 2u)) | (63u & (v_multi_byte_utf8 >> 16u)));
-+                  if ((2047u < v_multi_byte_utf8) && ((v_multi_byte_utf8 < 55296u) || (57343u < v_multi_byte_utf8))) {
-+                    iop_a_src += 3u;
-+                    if (v_string_length >= 65528u) {
-+                      *iop_a_dst++ = wuffs_base__make_token(
-+                          (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                          (((uint64_t)((v_string_length + 3u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                      v_string_length = 0u;
-+                      goto label__string_loop_outer__continue;
-+                    }
-+                    v_string_length += 3u;
-+                    continue;
-+                  }
-+                }
-+              } else if (v_char == 5u) {
-+                if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
-+                  if (v_string_length > 0u) {
-+                    *iop_a_dst++ = wuffs_base__make_token(
-+                        (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                        (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                        (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                    v_string_length = 0u;
-+                    if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+                      goto label__string_loop_outer__continue;
-+                    }
-+                  }
-+                  if (a_src && a_src->meta.closed) {
-+                    if (self->private_impl.f_quirks[20u]) {
-+                      *iop_a_dst++ = wuffs_base__make_token(
-+                          (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                      iop_a_src += 1u;
-+                      goto label__string_loop_outer__continue;
-+                    }
-+                    status = wuffs_base__make_status(wuffs_json__error__bad_utf_8);
-+                    goto exit;
-+                  }
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(13);
-+                  goto label__string_loop_outer__continue;
-+                }
-+                v_multi_byte_utf8 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+                if ((v_multi_byte_utf8 & 3233857536u) == 2155905024u) {
-+                  v_multi_byte_utf8 = ((1835008u & ((uint32_t)(v_multi_byte_utf8 << 18u))) |
-+                      (258048u & ((uint32_t)(v_multi_byte_utf8 << 4u))) |
-+                      (4032u & (v_multi_byte_utf8 >> 10u)) |
-+                      (63u & (v_multi_byte_utf8 >> 24u)));
-+                  if ((65535u < v_multi_byte_utf8) && (v_multi_byte_utf8 <= 1114111u)) {
-+                    iop_a_src += 4u;
-+                    if (v_string_length >= 65528u) {
-+                      *iop_a_dst++ = wuffs_base__make_token(
-+                          (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                          (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                          (((uint64_t)((v_string_length + 4u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                      v_string_length = 0u;
-+                      goto label__string_loop_outer__continue;
-+                    }
-+                    v_string_length += 4u;
-+                    continue;
-+                  }
-+                }
-+              }
-+              if (v_string_length > 0u) {
-+                *iop_a_dst++ = wuffs_base__make_token(
-+                    (((uint64_t)(4194819u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                    (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                    (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                v_string_length = 0u;
-+                if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+                  goto label__string_loop_outer__continue;
-+                }
-+              }
-+              if (((uint8_t)(v_char & 128u)) != 0u) {
-+                if (self->private_impl.f_quirks[0u]) {
-+                  *iop_a_dst++ = wuffs_base__make_token(
-+                      (((uint64_t)((6291456u | ((uint32_t)(((uint8_t)(v_char & 127u))))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                      (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                  iop_a_src += 1u;
-+                  goto label__string_loop_outer__continue;
-+                }
-+                if (v_char == 138u) {
-+                  status = wuffs_base__make_status(wuffs_json__error__bad_new_line_in_a_string);
-+                  goto exit;
-+                }
-+                status = wuffs_base__make_status(wuffs_json__error__bad_c0_control_code);
-+                goto exit;
-+              }
-+              if (self->private_impl.f_quirks[20u]) {
-+                *iop_a_dst++ = wuffs_base__make_token(
-+                    (((uint64_t)(6356989u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                    (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                    (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+                iop_a_src += 1u;
-+                goto label__string_loop_outer__continue;
-+              }
-+              status = wuffs_base__make_status(wuffs_json__error__bad_utf_8);
-+              goto exit;
-+            }
-+          }
-+          label__string_loop_outer__break:;
-+          while (true) {
-+            if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+              if (a_src && a_src->meta.closed) {
-+                status = wuffs_base__make_status(wuffs_json__error__bad_input);
-+                goto exit;
-+              }
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(14);
-+              continue;
-+            }
-+            if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(15);
-+              continue;
-+            }
-+            iop_a_src += 1u;
-+            *iop_a_dst++ = wuffs_base__make_token(
-+                (((uint64_t)(4194579u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+            break;
-+          }
-+          if (0u == (v_expect & (((uint32_t)(1u)) << 4u))) {
-+            v_expect = 4104u;
-+            goto label__outer__continue;
-+          }
-+          break;
-+        } else if (v_class == 2u) {
-+          iop_a_src += 1u;
-+          *iop_a_dst++ = wuffs_base__make_token(
-+              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+          if (0u == (v_expect & (((uint32_t)(1u)) << 8u))) {
-+            if (self->private_impl.f_quirks[13u]) {
-+              v_expect = 4162u;
-+            } else {
-+              v_expect = 4098u;
-+            }
-+          } else {
-+            if (self->private_impl.f_quirks[13u]) {
-+              v_expect = 8114u;
-+            } else {
-+              v_expect = 7858u;
-+            }
-+          }
-+          goto label__outer__continue;
-+        } else if (v_class == 3u) {
-+          iop_a_src += 1u;
-+          *iop_a_dst++ = wuffs_base__make_token(
-+              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+          v_expect = 7858u;
-+          goto label__outer__continue;
-+        } else if (v_class == 4u) {
-+          while (true) {
-+            if (a_src) {
-+              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+            }
-+            v_number_length = wuffs_json__decoder__decode_number(self, a_src);
-+            if (a_src) {
-+              iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+            }
-+            v_number_status = (v_number_length >> 8u);
-+            v_vminor = 10486787u;
-+            if ((v_number_length & 128u) != 0u) {
-+              v_vminor = 10486785u;
-+            }
-+            v_number_length = (v_number_length & 127u);
-+            if (v_number_status == 0u) {
-+              *iop_a_dst++ = wuffs_base__make_token(
-+                  (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                  (((uint64_t)(v_number_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+              break;
-+            }
-+            while (v_number_length > 0u) {
-+              v_number_length -= 1u;
-+              if (iop_a_src > io1_a_src) {
-+                iop_a_src--;
-+              } else {
-+                status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
-+                goto exit;
-+              }
-+            }
-+            if (v_number_status == 1u) {
-+              if (self->private_impl.f_quirks[14u]) {
-+                if (a_dst) {
-+                  a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+                }
-+                if (a_src) {
-+                  a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+                }
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
-+                status = wuffs_json__decoder__decode_inf_nan(self, a_dst, a_src);
-+                if (a_dst) {
-+                  iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
-+                }
-+                if (a_src) {
-+                  iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+                }
-+                if (status.repr) {
-+                  goto suspend;
-+                }
-+                break;
-+              }
-+              status = wuffs_base__make_status(wuffs_json__error__bad_input);
-+              goto exit;
-+            } else if (v_number_status == 2u) {
-+              status = wuffs_base__make_status(wuffs_json__error__unsupported_number_length);
-+              goto exit;
-+            } else {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(17);
-+              while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(18);
-+              }
-+            }
-+          }
-+          break;
-+        } else if (v_class == 5u) {
-+          v_vminor = 2113553u;
-+          if (v_depth == 0u) {
-+          } else if (0u != (v_expect_after_value & (((uint32_t)(1u)) << 6u))) {
-+            v_vminor = 2113601u;
-+          } else {
-+            v_vminor = 2113569u;
-+          }
-+          if (v_depth >= 1024u) {
-+            status = wuffs_base__make_status(wuffs_json__error__unsupported_recursion_depth);
-+            goto exit;
-+          }
-+          v_stack_byte = (v_depth / 32u);
-+          v_stack_bit = (v_depth & 31u);
-+          self->private_data.f_stack[v_stack_byte] |= (((uint32_t)(1u)) << v_stack_bit);
-+          v_depth += 1u;
-+          iop_a_src += 1u;
-+          *iop_a_dst++ = wuffs_base__make_token(
-+              (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+          v_expect = 4162u;
-+          v_expect_after_value = 4164u;
-+          goto label__outer__continue;
-+        } else if (v_class == 6u) {
-+          iop_a_src += 1u;
-+          if (v_depth <= 1u) {
-+            *iop_a_dst++ = wuffs_base__make_token(
-+                (((uint64_t)(2101314u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+            goto label__outer__break;
-+          }
-+          v_depth -= 1u;
-+          v_stack_byte = ((v_depth - 1u) / 32u);
-+          v_stack_bit = ((v_depth - 1u) & 31u);
-+          if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
-+            *iop_a_dst++ = wuffs_base__make_token(
-+                (((uint64_t)(2105410u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+            v_expect = 4356u;
-+            v_expect_after_value = 4356u;
-+          } else {
-+            *iop_a_dst++ = wuffs_base__make_token(
-+                (((uint64_t)(2113602u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+            v_expect = 4164u;
-+            v_expect_after_value = 4164u;
-+          }
-+          goto label__outer__continue;
-+        } else if (v_class == 7u) {
-+          v_vminor = 2105361u;
-+          if (v_depth == 0u) {
-+          } else if (0u != (v_expect_after_value & (((uint32_t)(1u)) << 6u))) {
-+            v_vminor = 2105409u;
-+          } else {
-+            v_vminor = 2105377u;
-+          }
-+          if (v_depth >= 1024u) {
-+            status = wuffs_base__make_status(wuffs_json__error__unsupported_recursion_depth);
-+            goto exit;
-+          }
-+          v_stack_byte = (v_depth / 32u);
-+          v_stack_bit = (v_depth & 31u);
-+          self->private_data.f_stack[v_stack_byte] &= (4294967295u ^ (((uint32_t)(1u)) << v_stack_bit));
-+          v_depth += 1u;
-+          iop_a_src += 1u;
-+          *iop_a_dst++ = wuffs_base__make_token(
-+              (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+          v_expect = 8114u;
-+          v_expect_after_value = 4356u;
-+          goto label__outer__continue;
-+        } else if (v_class == 8u) {
-+          iop_a_src += 1u;
-+          if (v_depth <= 1u) {
-+            *iop_a_dst++ = wuffs_base__make_token(
-+                (((uint64_t)(2101282u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+            goto label__outer__break;
-+          }
-+          v_depth -= 1u;
-+          v_stack_byte = ((v_depth - 1u) / 32u);
-+          v_stack_bit = ((v_depth - 1u) & 31u);
-+          if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
-+            *iop_a_dst++ = wuffs_base__make_token(
-+                (((uint64_t)(2105378u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+            v_expect = 4356u;
-+            v_expect_after_value = 4356u;
-+          } else {
-+            *iop_a_dst++ = wuffs_base__make_token(
-+                (((uint64_t)(2113570u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+            v_expect = 4164u;
-+            v_expect_after_value = 4164u;
-+          }
-+          goto label__outer__continue;
-+        } else if (v_class == 9u) {
-+          v_match = wuffs_private_impl__io_reader__match7(iop_a_src, io2_a_src, a_src, 111546413966853u);
-+          if (v_match == 0u) {
-+            *iop_a_dst++ = wuffs_base__make_token(
-+                (((uint64_t)(8388612u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                (((uint64_t)(5u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+            if (((uint64_t)(io2_a_src - iop_a_src)) < 5u) {
-+              status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
-+              goto exit;
-+            }
-+            iop_a_src += 5u;
-+            break;
-+          } else if (v_match == 1u) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(19);
-+            goto label__outer__continue;
-+          }
-+        } else if (v_class == 10u) {
-+          v_match = wuffs_private_impl__io_reader__match7(iop_a_src, io2_a_src, a_src, 435762131972u);
-+          if (v_match == 0u) {
-+            *iop_a_dst++ = wuffs_base__make_token(
-+                (((uint64_t)(8388616u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+            if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
-+              status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
-+              goto exit;
-+            }
-+            iop_a_src += 4u;
-+            break;
-+          } else if (v_match == 1u) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(20);
-+            goto label__outer__continue;
-+          }
-+        } else if (v_class == 11u) {
-+          v_match = wuffs_private_impl__io_reader__match7(iop_a_src, io2_a_src, a_src, 465676103172u);
-+          if (v_match == 0u) {
-+            *iop_a_dst++ = wuffs_base__make_token(
-+                (((uint64_t)(8388610u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+            if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
-+              status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
-+              goto exit;
-+            }
-+            iop_a_src += 4u;
-+            break;
-+          } else if (v_match == 1u) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(21);
-+            goto label__outer__continue;
-+          }
-+          if (self->private_impl.f_quirks[14u]) {
-+            if (a_dst) {
-+              a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+            }
-+            if (a_src) {
-+              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+            }
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22);
-+            status = wuffs_json__decoder__decode_inf_nan(self, a_dst, a_src);
-+            if (a_dst) {
-+              iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
-+            }
-+            if (a_src) {
-+              iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+            }
-+            if (status.repr) {
-+              goto suspend;
-+            }
-+            break;
-+          }
-+        } else if (v_class == 12u) {
-+          if (self->private_impl.f_quirks[11u] || self->private_impl.f_quirks[12u]) {
-+            if (a_dst) {
-+              a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+            }
-+            if (a_src) {
-+              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+            }
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(23);
-+            status = wuffs_json__decoder__decode_comment(self, a_dst, a_src);
-+            if (a_dst) {
-+              iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
-+            }
-+            if (a_src) {
-+              iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+            }
-+            if (status.repr) {
-+              goto suspend;
-+            }
-+            if (self->private_impl.f_comment_type > 0u) {
-+              goto label__outer__continue;
-+            }
-+          }
-+        }
-+        status = wuffs_base__make_status(wuffs_json__error__bad_input);
-+        goto exit;
-+      }
-+      if (v_depth == 0u) {
-+        break;
-+      }
-+      v_expect = v_expect_after_value;
-+    }
-+    label__outer__break:;
-+    if (self->private_impl.f_quirks[17u] || self->private_impl.f_quirks[18u]) {
-+      if (a_dst) {
-+        a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+      }
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(24);
-+      status = wuffs_json__decoder__decode_trailer(self, a_dst, a_src);
-+      if (a_dst) {
-+        iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
-+      }
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+    }
-+    self->private_impl.f_end_of_data = true;
-+
-+    ok:
-+    self->private_impl.p_decode_tokens = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_tokens = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
-+  self->private_data.s_decode_tokens.v_depth = v_depth;
-+  self->private_data.s_decode_tokens.v_expect = v_expect;
-+  self->private_data.s_decode_tokens.v_expect_after_value = v_expect_after_value;
-+
-+  goto exit;
-+  exit:
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+  }
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func json.decoder.decode_number
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint32_t
-+wuffs_json__decoder__decode_number(
-+    wuffs_json__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  uint8_t v_c8 = 0;
-+  uint32_t v_n = 0;
-+  uint32_t v_floating_point = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  do {
-+    v_n = 0u;
-+    if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+      if ( ! (a_src && a_src->meta.closed)) {
-+        v_n |= 768u;
-+      }
-+      break;
-+    }
-+    v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+    if (v_c8 != 45u) {
-+    } else {
-+      v_n += 1u;
-+      iop_a_src += 1u;
-+      if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+        if ( ! (a_src && a_src->meta.closed)) {
-+          v_n |= 768u;
-+        }
-+        v_n |= 256u;
-+        break;
-+      }
-+      v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+    }
-+    if (v_c8 == 48u) {
-+      v_n += 1u;
-+      iop_a_src += 1u;
-+    } else {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      v_n = wuffs_json__decoder__decode_digits(self, a_src, v_n);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (v_n > 99u) {
-+        break;
-+      }
-+    }
-+    if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+      if ( ! (a_src && a_src->meta.closed)) {
-+        v_n |= 768u;
-+      }
-+      break;
-+    }
-+    v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+    if (v_c8 != 46u) {
-+    } else {
-+      if (v_n >= 99u) {
-+        v_n |= 512u;
-+        break;
-+      }
-+      v_n += 1u;
-+      iop_a_src += 1u;
-+      v_floating_point = 128u;
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      v_n = wuffs_json__decoder__decode_digits(self, a_src, v_n);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (v_n > 99u) {
-+        break;
-+      }
-+      if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+        if ( ! (a_src && a_src->meta.closed)) {
-+          v_n |= 768u;
-+        }
-+        break;
-+      }
-+      v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+    }
-+    if ((v_c8 != 69u) && (v_c8 != 101u)) {
-+      break;
-+    }
-+    if (v_n >= 99u) {
-+      v_n |= 512u;
-+      break;
-+    }
-+    v_n += 1u;
-+    iop_a_src += 1u;
-+    v_floating_point = 128u;
-+    if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+      if ( ! (a_src && a_src->meta.closed)) {
-+        v_n |= 768u;
-+      }
-+      v_n |= 256u;
-+      break;
-+    }
-+    v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+    if ((v_c8 != 43u) && (v_c8 != 45u)) {
-+    } else {
-+      if (v_n >= 99u) {
-+        v_n |= 512u;
-+        break;
-+      }
-+      v_n += 1u;
-+      iop_a_src += 1u;
-+    }
-+    if (a_src) {
-+      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+    }
-+    v_n = wuffs_json__decoder__decode_digits(self, a_src, v_n);
-+    if (a_src) {
-+      iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+    }
-+  } while (0);
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+  return (v_n | v_floating_point);
-+}
-+
-+// -------- func json.decoder.decode_digits
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint32_t
-+wuffs_json__decoder__decode_digits(
-+    wuffs_json__decoder* self,
-+    wuffs_base__io_buffer* a_src,
-+    uint32_t a_n) {
-+  uint8_t v_c8 = 0;
-+  uint32_t v_n = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  v_n = a_n;
-+  while (true) {
-+    if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+      if ( ! (a_src && a_src->meta.closed)) {
-+        v_n |= 768u;
-+      }
-+      break;
-+    }
-+    v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+    if (0u == WUFFS_JSON__LUT_DECIMAL_DIGITS[v_c8]) {
-+      break;
-+    }
-+    if (v_n >= 99u) {
-+      v_n |= 512u;
-+      break;
-+    }
-+    v_n += 1u;
-+    iop_a_src += 1u;
-+  }
-+  if (v_n == a_n) {
-+    v_n |= 256u;
-+  }
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+  return v_n;
-+}
-+
-+// -------- func json.decoder.decode_leading
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_json__decoder__decode_leading(
-+    wuffs_json__decoder* self,
-+    wuffs_base__token_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_c8 = 0;
-+  uint32_t v_u = 0;
-+
-+  wuffs_base__token* iop_a_dst = NULL;
-+  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-+    }
-+  }
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_leading;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    self->private_impl.f_allow_leading_ars = self->private_impl.f_quirks[15u];
-+    self->private_impl.f_allow_leading_ubom = self->private_impl.f_quirks[16u];
-+    while (self->private_impl.f_allow_leading_ars || self->private_impl.f_allow_leading_ubom) {
-+      if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+        continue;
-+      }
-+      if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+        if (a_src && a_src->meta.closed) {
-+          break;
-+        }
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
-+        continue;
-+      }
-+      v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+      if ((v_c8 == 30u) && self->private_impl.f_allow_leading_ars) {
-+        self->private_impl.f_allow_leading_ars = false;
-+        iop_a_src += 1u;
-+        *iop_a_dst++ = wuffs_base__make_token(
-+            (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+            (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+        continue;
-+      } else if ((v_c8 == 239u) && self->private_impl.f_allow_leading_ubom) {
-+        if (((uint64_t)(io2_a_src - iop_a_src)) < 3u) {
-+          if (a_src && a_src->meta.closed) {
-+            break;
-+          }
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
-+          continue;
-+        }
-+        v_u = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
-+        if (v_u == 12565487u) {
-+          self->private_impl.f_allow_leading_ubom = false;
-+          iop_a_src += 3u;
-+          *iop_a_dst++ = wuffs_base__make_token(
-+              (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+              (((uint64_t)(3u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+          continue;
-+        }
-+      }
-+      break;
-+    }
-+
-+    ok:
-+    self->private_impl.p_decode_leading = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_leading = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+  }
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func json.decoder.decode_comment
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_json__decoder__decode_comment(
-+    wuffs_json__decoder* self,
-+    wuffs_base__token_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_c8 = 0;
-+  uint16_t v_c16 = 0;
-+  uint32_t v_length = 0;
-+
-+  wuffs_base__token* iop_a_dst = NULL;
-+  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-+    }
-+  }
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_comment;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    self->private_impl.f_comment_type = 0u;
-+    while ((((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) || (((uint64_t)(io2_a_src - iop_a_src)) <= 1u)) {
-+      if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+        continue;
-+      }
-+      if (a_src && a_src->meta.closed) {
-+        status = wuffs_base__make_status(NULL);
-+        goto ok;
-+      }
-+      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
-+    }
-+    v_c16 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
-+    if ((v_c16 == 10799u) && self->private_impl.f_quirks[11u]) {
-+      iop_a_src += 2u;
-+      v_length = 2u;
-+      while (true) {
-+        if (((uint64_t)(io2_a_src - iop_a_src)) <= 1u) {
-+          if (v_length > 0u) {
-+            *iop_a_dst++ = wuffs_base__make_token(
-+                (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+          }
-+          if (a_src && a_src->meta.closed) {
-+            status = wuffs_base__make_status(wuffs_json__error__bad_input);
-+            goto exit;
-+          }
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
-+          while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
-+          }
-+          v_length = 0u;
-+          continue;
-+        }
-+        v_c16 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
-+        if (v_c16 == 12074u) {
-+          iop_a_src += 2u;
-+          *iop_a_dst++ = wuffs_base__make_token(
-+              (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+              (((uint64_t)((v_length + 2u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+          self->private_impl.f_comment_type = 1u;
-+          status = wuffs_base__make_status(NULL);
-+          goto ok;
-+        }
-+        iop_a_src += 1u;
-+        if (v_length >= 65533u) {
-+          *iop_a_dst++ = wuffs_base__make_token(
-+              (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+              (((uint64_t)((v_length + 1u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+          while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
-+          }
-+          v_length = 0u;
-+          continue;
-+        }
-+        v_length += 1u;
-+      }
-+    } else if ((v_c16 == 12079u) && self->private_impl.f_quirks[12u]) {
-+      iop_a_src += 2u;
-+      v_length = 2u;
-+      while (true) {
-+        if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+          if (a_src && a_src->meta.closed) {
-+            *iop_a_dst++ = wuffs_base__make_token(
-+                (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+            self->private_impl.f_comment_type = 2u;
-+            status = wuffs_base__make_status(NULL);
-+            goto ok;
-+          } else if (v_length > 0u) {
-+            *iop_a_dst++ = wuffs_base__make_token(
-+                (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+                (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+          }
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
-+          while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
-+          }
-+          v_length = 0u;
-+          continue;
-+        }
-+        v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+        if (v_c8 == 10u) {
-+          *iop_a_dst++ = wuffs_base__make_token(
-+              (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+              (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+          self->private_impl.f_comment_type = 2u;
-+          status = wuffs_base__make_status(NULL);
-+          goto ok;
-+        }
-+        iop_a_src += 1u;
-+        if (v_length >= 65533u) {
-+          *iop_a_dst++ = wuffs_base__make_token(
-+              (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
-+              (((uint64_t)((v_length + 1u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+          while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
-+          }
-+          v_length = 0u;
-+          continue;
-+        }
-+        v_length += 1u;
-+      }
-+    }
-+
-+    ok:
-+    self->private_impl.p_decode_comment = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_comment = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+  }
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func json.decoder.decode_inf_nan
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_json__decoder__decode_inf_nan(
-+    wuffs_json__decoder* self,
-+    wuffs_base__token_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint32_t v_c32 = 0;
-+  uint32_t v_neg = 0;
-+
-+  wuffs_base__token* iop_a_dst = NULL;
-+  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-+    }
-+  }
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_inf_nan;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+        continue;
-+      }
-+      if (((uint64_t)(io2_a_src - iop_a_src)) <= 2u) {
-+        if (a_src && a_src->meta.closed) {
-+          status = wuffs_base__make_status(wuffs_json__error__bad_input);
-+          goto exit;
-+        }
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
-+        continue;
-+      }
-+      v_c32 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
-+      if ((v_c32 | 2105376u) == 6712937u) {
-+        if (((uint64_t)(io2_a_src - iop_a_src)) > 7u) {
-+          if ((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) | 2314885530818453536u) == 8751735898823356009u) {
-+            *iop_a_dst++ = wuffs_base__make_token(
-+                (((uint64_t)(10485792u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                (((uint64_t)(8u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+            iop_a_src += 8u;
-+            status = wuffs_base__make_status(NULL);
-+            goto ok;
-+          }
-+        } else if ( ! (a_src && a_src->meta.closed)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
-+          continue;
-+        }
-+        *iop_a_dst++ = wuffs_base__make_token(
-+            (((uint64_t)(10485792u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+            (((uint64_t)(3u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+        iop_a_src += 3u;
-+        status = wuffs_base__make_status(NULL);
-+        goto ok;
-+      } else if ((v_c32 | 2105376u) == 7233902u) {
-+        *iop_a_dst++ = wuffs_base__make_token(
-+            (((uint64_t)(10485888u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+            (((uint64_t)(3u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+        iop_a_src += 3u;
-+        status = wuffs_base__make_status(NULL);
-+        goto ok;
-+      } else if ((v_c32 & 255u) == 43u) {
-+        v_neg = 0u;
-+      } else if ((v_c32 & 255u) == 45u) {
-+        v_neg = 1u;
-+      } else {
-+        status = wuffs_base__make_status(wuffs_json__error__bad_input);
-+        goto exit;
-+      }
-+      if (((uint64_t)(io2_a_src - iop_a_src)) <= 3u) {
-+        if (a_src && a_src->meta.closed) {
-+          status = wuffs_base__make_status(wuffs_json__error__bad_input);
-+          goto exit;
-+        }
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
-+        continue;
-+      }
-+      v_c32 = (wuffs_base__peek_u32le__no_bounds_check(iop_a_src) >> 8u);
-+      if ((v_c32 | 2105376u) == 6712937u) {
-+        if (((uint64_t)(io2_a_src - iop_a_src)) > 8u) {
-+          if ((wuffs_base__peek_u64le__no_bounds_check(iop_a_src + 1u) | 2314885530818453536u) == 8751735898823356009u) {
-+            *iop_a_dst++ = wuffs_base__make_token(
-+                (((uint64_t)((10485760u | (((uint32_t)(32u)) >> v_neg)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                (((uint64_t)(9u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+            iop_a_src += 9u;
-+            status = wuffs_base__make_status(NULL);
-+            goto ok;
-+          }
-+        } else if ( ! (a_src && a_src->meta.closed)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
-+          continue;
-+        }
-+        *iop_a_dst++ = wuffs_base__make_token(
-+            (((uint64_t)((10485760u | (((uint32_t)(32u)) >> v_neg)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+            (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+        iop_a_src += 4u;
-+        status = wuffs_base__make_status(NULL);
-+        goto ok;
-+      } else if ((v_c32 | 2105376u) == 7233902u) {
-+        *iop_a_dst++ = wuffs_base__make_token(
-+            (((uint64_t)((10485760u | (((uint32_t)(128u)) >> v_neg)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+            (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+        iop_a_src += 4u;
-+        status = wuffs_base__make_status(NULL);
-+        goto ok;
-+      }
-+      status = wuffs_base__make_status(wuffs_json__error__bad_input);
-+      goto exit;
-+    }
-+
-+    ok:
-+    self->private_impl.p_decode_inf_nan = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_inf_nan = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+  }
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func json.decoder.decode_trailer
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_json__decoder__decode_trailer(
-+    wuffs_json__decoder* self,
-+    wuffs_base__token_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_c8 = 0;
-+  uint32_t v_whitespace_length = 0;
-+
-+  wuffs_base__token* iop_a_dst = NULL;
-+  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-+    }
-+  }
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_trailer;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_quirks[18u]) {
-+      self->private_impl.f_trailer_stop = 10u;
-+    } else {
-+      self->private_impl.f_trailer_stop = 0u;
-+    }
-+    label__outer__continue:;
-+    while (true) {
-+      if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+        continue;
-+      }
-+      v_whitespace_length = 0u;
-+      while (true) {
-+        if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+          if (v_whitespace_length > 0u) {
-+            *iop_a_dst++ = wuffs_base__make_token(
-+                (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+          }
-+          if (a_src && a_src->meta.closed) {
-+            goto label__outer__break;
-+          }
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
-+          goto label__outer__continue;
-+        }
-+        v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+        if (WUFFS_JSON__LUT_CLASSES[v_c8] != 0u) {
-+          if (v_whitespace_length > 0u) {
-+            *iop_a_dst++ = wuffs_base__make_token(
-+                (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+                (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+          }
-+          if (self->private_impl.f_trailer_stop > 0u) {
-+            status = wuffs_base__make_status(wuffs_json__error__bad_input);
-+            goto exit;
-+          }
-+          if (a_dst) {
-+            a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+          }
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+          status = wuffs_json__decoder__decode_comment(self, a_dst, a_src);
-+          if (a_dst) {
-+            iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
-+          }
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+          if (status.repr) {
-+            goto suspend;
-+          }
-+          if (self->private_impl.f_comment_type > 0u) {
-+            goto label__outer__continue;
-+          }
-+          status = wuffs_base__make_status(NULL);
-+          goto ok;
-+        }
-+        iop_a_src += 1u;
-+        if ((v_whitespace_length >= 65534u) || (v_c8 == self->private_impl.f_trailer_stop)) {
-+          *iop_a_dst++ = wuffs_base__make_token(
-+              (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
-+              (((uint64_t)((v_whitespace_length + 1u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+          if (v_c8 == self->private_impl.f_trailer_stop) {
-+            status = wuffs_base__make_status(NULL);
-+            goto ok;
-+          }
-+          goto label__outer__continue;
-+        }
-+        v_whitespace_length += 1u;
-+      }
-+    }
-+    label__outer__break:;
-+
-+    ok:
-+    self->private_impl.p_decode_trailer = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_trailer = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+  }
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JSON)
-+
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZMA)
-+
-+// ---------------- Status Codes Implementations
-+
-+const char wuffs_lzma__error__bad_lzma2_header[] = "#lzma: bad LZMA2 header";
-+const char wuffs_lzma__error__bad_bitstream_trailer[] = "#lzma: bad bitstream trailer";
-+const char wuffs_lzma__error__bad_code[] = "#lzma: bad code";
-+const char wuffs_lzma__error__bad_decoded_length[] = "#lzma: bad decoded length";
-+const char wuffs_lzma__error__bad_distance[] = "#lzma: bad distance";
-+const char wuffs_lzma__error__bad_header[] = "#lzma: bad header";
-+const char wuffs_lzma__error__truncated_input[] = "#lzma: truncated input";
-+const char wuffs_lzma__error__unsupported_decoded_length[] = "#lzma: unsupported decoded length";
-+const char wuffs_lzma__error__unsupported_properties[] = "#lzma: unsupported properties";
-+const char wuffs_lzma__error__internal_error_inconsistent_i_o[] = "#lzma: internal error: inconsistent I/O";
-+const char wuffs_lzma__error__internal_error_inconsistent_dictionary_state[] = "#lzma: internal error: inconsistent dictionary state";
-+
-+// ---------------- Private Consts
-+
-+static const uint8_t
-+WUFFS_LZMA__STATE_TRANSITION_LITERAL[12] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 0u, 0u, 0u, 1u, 2u, 3u, 4u,
-+  5u, 6u, 4u, 5u,
-+};
-+
-+static const uint8_t
-+WUFFS_LZMA__STATE_TRANSITION_MATCH[12] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  7u, 7u, 7u, 7u, 7u, 7u, 7u, 10u,
-+  10u, 10u, 10u, 10u,
-+};
-+
-+static const uint8_t
-+WUFFS_LZMA__STATE_TRANSITION_LONGREP[12] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  8u, 8u, 8u, 8u, 8u, 8u, 8u, 11u,
-+  11u, 11u, 11u, 11u,
-+};
-+
-+static const uint8_t
-+WUFFS_LZMA__STATE_TRANSITION_SHORTREP[12] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  9u, 9u, 9u, 9u, 9u, 9u, 9u, 11u,
-+  11u, 11u, 11u, 11u,
-+};
-+
-+static const uint8_t
-+WUFFS_LZMA__CLAMP_NO_MORE_THAN_3[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 1u, 2u, 3u, 3u, 3u, 3u, 3u,
-+};
-+
-+#define WUFFS_LZMA__QUIRKS_BASE 1348001792u
-+
-+// ---------------- Private Initializer Prototypes
-+
-+// ---------------- Private Function Prototypes
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_lzma__decoder__decode_bitstream_fast(
-+    wuffs_lzma__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_lzma__decoder__decode_bitstream_slow(
-+    wuffs_lzma__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_lzma__decoder__add_history(
-+    wuffs_lzma__decoder* self,
-+    wuffs_base__slice_u8 a_hist,
-+    wuffs_base__slice_u8 a_workbuf);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_lzma__decoder__do_transform_io(
-+    wuffs_lzma__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_lzma__decoder__decode_bitstream(
-+    wuffs_lzma__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_lzma__decoder__update_stashed_bytes(
-+    wuffs_lzma__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__slice_u8 a_workbuf);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_lzma__decoder__decode_optional_end_of_stream(
-+    wuffs_lzma__decoder* self,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_lzma__decoder__initialize_dict(
-+    wuffs_lzma__decoder* self);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_lzma__decoder__initialize_probs(
-+    wuffs_lzma__decoder* self);
-+
-+// ---------------- VTables
-+
-+const wuffs_base__io_transformer__func_ptrs
-+wuffs_lzma__decoder__func_ptrs_for__wuffs_base__io_transformer = {
-+  (wuffs_base__optional_u63(*)(const void*))(&wuffs_lzma__decoder__dst_history_retain_length),
-+  (uint64_t(*)(const void*,
-+      uint32_t))(&wuffs_lzma__decoder__get_quirk),
-+  (wuffs_base__status(*)(void*,
-+      uint32_t,
-+      uint64_t))(&wuffs_lzma__decoder__set_quirk),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__slice_u8))(&wuffs_lzma__decoder__transform_io),
-+  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_lzma__decoder__workbuf_len),
-+};
-+
-+// ---------------- Initializer Implementations
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_lzma__decoder__initialize(
-+    wuffs_lzma__decoder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options){
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (sizeof(*self) != sizeof_star_self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  }
-+  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
-+      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+  }
-+
-+  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
-+    // The whole point of this if-check is to detect an uninitialized *self.
-+    // We disable the warning on GCC. Clang-5.0 does not have this warning.
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+#endif
-+    if (self->private_impl.magic != 0) {
-+      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+    }
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+  } else {
-+    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
-+      memset(self, 0, sizeof(*self));
-+      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-+    } else {
-+      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+    }
-+  }
-+
-+  self->private_impl.magic = WUFFS_BASE__MAGIC;
-+  self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
-+      wuffs_base__io_transformer__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
-+      (const void*)(&wuffs_lzma__decoder__func_ptrs_for__wuffs_base__io_transformer);
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+wuffs_lzma__decoder*
-+wuffs_lzma__decoder__alloc(void) {
-+  wuffs_lzma__decoder* x =
-+      (wuffs_lzma__decoder*)(calloc(1, sizeof(wuffs_lzma__decoder)));
-+  if (!x) {
-+    return NULL;
-+  }
-+  if (wuffs_lzma__decoder__initialize(
-+      x, sizeof(wuffs_lzma__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+    free(x);
-+    return NULL;
-+  }
-+  return x;
-+}
-+
-+size_t
-+sizeof__wuffs_lzma__decoder(void) {
-+  return sizeof(wuffs_lzma__decoder);
-+}
-+
-+// ---------------- Function Implementations
-+
-+// -------- func lzma.decoder.decode_bitstream_fast
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_lzma__decoder__decode_bitstream_fast(
-+    wuffs_lzma__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_c8 = 0;
-+  uint32_t v_bits = 0;
-+  uint32_t v_range = 0;
-+  uint32_t v_state = 0;
-+  uint32_t v_rep0 = 0;
-+  uint32_t v_rep1 = 0;
-+  uint32_t v_rep2 = 0;
-+  uint32_t v_rep3 = 0;
-+  uint32_t v_reptmp = 0;
-+  uint32_t v_rep = 0;
-+  uint64_t v_pos = 0;
-+  uint64_t v_pos_end = 0;
-+  uint32_t v_lc = 0;
-+  uint64_t v_lp_mask = 0;
-+  uint64_t v_pb_mask = 0;
-+  uint32_t v_prob = 0;
-+  uint32_t v_threshold = 0;
-+  uint32_t v_tree_node = 0;
-+  uint8_t v_prev_byte = 0;
-+  uint32_t v_match_byte = 0;
-+  uint32_t v_match_cusp = 0;
-+  uint32_t v_len_state = 0;
-+  uint32_t v_slot = 0;
-+  uint32_t v_len = 0;
-+  uint32_t v_lanl_offset = 0;
-+  uint32_t v_lanl_old_offset = 0;
-+  uint32_t v_lanl_index = 0;
-+  uint32_t v_num_extra_bits = 0;
-+  uint32_t v_dist_extra_bits = 0;
-+  uint32_t v_high_bit_was_on = 0;
-+  uint32_t v_i = 0;
-+  uint32_t v_index_ao00 = 0;
-+  uint32_t v_index_ao41 = 0;
-+  uint32_t v_index_lit = 0;
-+  uint32_t v_index_len = 0;
-+  uint32_t v_index_small_dist_base = 0;
-+  uint32_t v_index_small_dist_extra = 0;
-+  uint32_t v_index_small_dist = 0;
-+  uint32_t v_index_large_dist = 0;
-+  uint32_t v_dist = 0;
-+  uint32_t v_adj_dist = 0;
-+  uint64_t v_wb_index = 0;
-+
-+  uint8_t* iop_a_dst = NULL;
-+  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-+    }
-+  }
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  v_prev_byte = self->private_impl.f_stashed_bytes[0u];
-+  v_match_byte = ((uint32_t)(self->private_impl.f_stashed_bytes[1u]));
-+  v_bits = self->private_impl.f_stashed_bits;
-+  v_range = self->private_impl.f_stashed_range;
-+  v_state = self->private_impl.f_stashed_state;
-+  v_rep0 = self->private_impl.f_stashed_rep0;
-+  v_rep1 = self->private_impl.f_stashed_rep1;
-+  v_rep2 = self->private_impl.f_stashed_rep2;
-+  v_rep3 = self->private_impl.f_stashed_rep3;
-+  v_pos = self->private_impl.f_stashed_pos;
-+  v_pos_end = self->private_impl.f_stashed_pos_end;
-+  v_lc = self->private_impl.f_lc;
-+  v_lp_mask = ((((uint64_t)(1u)) << self->private_impl.f_lp) - 1u);
-+  v_pb_mask = ((((uint64_t)(1u)) << self->private_impl.f_pb) - 1u);
-+  while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 282u) && (((uint64_t)(io2_a_src - iop_a_src)) >= 48u)) {
-+    if (v_pos >= v_pos_end) {
-+      self->private_impl.f_end_of_chunk = true;
-+      break;
-+    }
-+    v_index_ao00 = ((v_state << 4u) | ((uint32_t)((v_pos & v_pb_mask))));
-+    v_prob = ((uint32_t)(self->private_data.f_probs_ao00[v_index_ao00]));
-+    v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+    if (v_bits < v_threshold) {
-+      v_range = v_threshold;
-+      v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+      self->private_data.f_probs_ao00[v_index_ao00] = ((uint16_t)(v_prob));
-+      if ((v_range >> 24u) == 0u) {
-+        v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+        iop_a_src += 1u;
-+        v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+        v_range <<= 8u;
-+      }
-+      v_index_lit = (15u & ((((uint32_t)((v_pos & v_lp_mask))) << v_lc) | (((uint32_t)(v_prev_byte)) >> (8u - v_lc))));
-+      v_lanl_offset = 0u;
-+      if (v_state >= 7u) {
-+        v_lanl_offset = 256u;
-+      }
-+      v_tree_node = 1u;
-+      while (v_tree_node < 256u) {
-+        v_match_byte <<= 1u;
-+        v_lanl_old_offset = v_lanl_offset;
-+        v_lanl_offset &= v_match_byte;
-+        v_lanl_index = (v_lanl_offset + v_lanl_old_offset + v_tree_node);
-+        v_prob = ((uint32_t)(self->private_data.f_probs_lit[v_index_lit][v_lanl_index]));
-+        v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+        if (v_bits < v_threshold) {
-+          v_lanl_offset = ((v_lanl_offset ^ v_lanl_old_offset) & 256u);
-+          v_range = v_threshold;
-+          v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+          self->private_data.f_probs_lit[v_index_lit][v_lanl_index] = ((uint16_t)(v_prob));
-+          v_tree_node = (v_tree_node << 1u);
-+        } else {
-+          v_bits -= v_threshold;
-+          v_range -= v_threshold;
-+          v_prob -= (v_prob >> 5u);
-+          self->private_data.f_probs_lit[v_index_lit][v_lanl_index] = ((uint16_t)(v_prob));
-+          v_tree_node = ((v_tree_node << 1u) | 1u);
-+        }
-+        if ((v_range >> 24u) == 0u) {
-+          if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+            status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
-+            goto exit;
-+          }
-+          v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+          iop_a_src += 1u;
-+          v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+          v_range <<= 8u;
-+        }
-+      }
-+      v_prev_byte = ((uint8_t)(v_tree_node));
-+      (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_prev_byte), iop_a_dst += 1);
-+      v_pos += 1u;
-+      v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_LITERAL[v_state]));
-+      continue;
-+    }
-+    v_bits -= v_threshold;
-+    v_range -= v_threshold;
-+    v_prob -= (v_prob >> 5u);
-+    self->private_data.f_probs_ao00[v_index_ao00] = ((uint16_t)(v_prob));
-+    if ((v_range >> 24u) == 0u) {
-+      v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+      iop_a_src += 1u;
-+      v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+      v_range <<= 8u;
-+    } else {
-+    }
-+    do {
-+      v_prob = ((uint32_t)(self->private_data.f_probs_ao20[v_state]));
-+      v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+      if (v_bits < v_threshold) {
-+        v_range = v_threshold;
-+        v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+        self->private_data.f_probs_ao20[v_state] = ((uint16_t)(v_prob));
-+        if ((v_range >> 24u) == 0u) {
-+          v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+          iop_a_src += 1u;
-+          v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+          v_range <<= 8u;
-+        } else {
-+        }
-+        do {
-+          v_prob = ((uint32_t)(self->private_data.f_probs_match_len_low[0u][0u]));
-+          v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+          if (v_bits < v_threshold) {
-+            v_range = v_threshold;
-+            v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+            self->private_data.f_probs_match_len_low[0u][0u] = ((uint16_t)(v_prob));
-+            if ((v_range >> 24u) == 0u) {
-+              v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+              iop_a_src += 1u;
-+              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+              v_range <<= 8u;
-+            }
-+            v_index_len = ((uint32_t)((v_pos & v_pb_mask)));
-+            v_tree_node = 1u;
-+            while (v_tree_node < 8u) {
-+              v_prob = ((uint32_t)(self->private_data.f_probs_match_len_low[v_index_len][v_tree_node]));
-+              v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+              if (v_bits < v_threshold) {
-+                v_range = v_threshold;
-+                v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+                self->private_data.f_probs_match_len_low[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
-+                v_tree_node = (v_tree_node << 1u);
-+              } else {
-+                v_bits -= v_threshold;
-+                v_range -= v_threshold;
-+                v_prob -= (v_prob >> 5u);
-+                self->private_data.f_probs_match_len_low[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
-+                v_tree_node = ((v_tree_node << 1u) | 1u);
-+              }
-+              if ((v_range >> 24u) == 0u) {
-+                if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+                  status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
-+                  goto exit;
-+                }
-+                v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+                iop_a_src += 1u;
-+                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+                v_range <<= 8u;
-+              }
-+            }
-+            v_len_state = ((uint32_t)(WUFFS_LZMA__CLAMP_NO_MORE_THAN_3[(v_tree_node & 7u)]));
-+            v_len = ((v_tree_node & 7u) + 2u);
-+            break;
-+          }
-+          v_bits -= v_threshold;
-+          v_range -= v_threshold;
-+          v_prob -= (v_prob >> 5u);
-+          self->private_data.f_probs_match_len_low[0u][0u] = ((uint16_t)(v_prob));
-+          if ((v_range >> 24u) == 0u) {
-+            if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+              status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
-+              goto exit;
-+            }
-+            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+            iop_a_src += 1u;
-+            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+            v_range <<= 8u;
-+          }
-+          v_prob = ((uint32_t)(self->private_data.f_probs_match_len_mid[0u][0u]));
-+          v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+          if (v_bits < v_threshold) {
-+            v_range = v_threshold;
-+            v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+            self->private_data.f_probs_match_len_mid[0u][0u] = ((uint16_t)(v_prob));
-+            if ((v_range >> 24u) == 0u) {
-+              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+                status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
-+                goto exit;
-+              }
-+              v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+              iop_a_src += 1u;
-+              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+              v_range <<= 8u;
-+            }
-+            v_index_len = ((uint32_t)((v_pos & v_pb_mask)));
-+            v_tree_node = 1u;
-+            while (v_tree_node < 8u) {
-+              v_prob = ((uint32_t)(self->private_data.f_probs_match_len_mid[v_index_len][v_tree_node]));
-+              v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+              if (v_bits < v_threshold) {
-+                v_range = v_threshold;
-+                v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+                self->private_data.f_probs_match_len_mid[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
-+                v_tree_node = (v_tree_node << 1u);
-+              } else {
-+                v_bits -= v_threshold;
-+                v_range -= v_threshold;
-+                v_prob -= (v_prob >> 5u);
-+                self->private_data.f_probs_match_len_mid[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
-+                v_tree_node = ((v_tree_node << 1u) | 1u);
-+              }
-+              if ((v_range >> 24u) == 0u) {
-+                if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+                  status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
-+                  goto exit;
-+                }
-+                v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+                iop_a_src += 1u;
-+                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+                v_range <<= 8u;
-+              }
-+            }
-+            v_len = ((v_tree_node & 7u) + 10u);
-+            v_len_state = 3u;
-+            break;
-+          }
-+          v_bits -= v_threshold;
-+          v_range -= v_threshold;
-+          v_prob -= (v_prob >> 5u);
-+          self->private_data.f_probs_match_len_mid[0u][0u] = ((uint16_t)(v_prob));
-+          if ((v_range >> 24u) == 0u) {
-+            if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+              status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
-+              goto exit;
-+            }
-+            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+            iop_a_src += 1u;
-+            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+            v_range <<= 8u;
-+          }
-+          v_tree_node = 1u;
-+          while (v_tree_node < 256u) {
-+            v_prob = ((uint32_t)(self->private_data.f_probs_match_len_high[0u][v_tree_node]));
-+            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+            if (v_bits < v_threshold) {
-+              v_range = v_threshold;
-+              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+              self->private_data.f_probs_match_len_high[0u][v_tree_node] = ((uint16_t)(v_prob));
-+              v_tree_node = (v_tree_node << 1u);
-+            } else {
-+              v_bits -= v_threshold;
-+              v_range -= v_threshold;
-+              v_prob -= (v_prob >> 5u);
-+              self->private_data.f_probs_match_len_high[0u][v_tree_node] = ((uint16_t)(v_prob));
-+              v_tree_node = ((v_tree_node << 1u) | 1u);
-+            }
-+            if ((v_range >> 24u) == 0u) {
-+              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+                status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
-+                goto exit;
-+              }
-+              v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+              iop_a_src += 1u;
-+              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+              v_range <<= 8u;
-+            }
-+          }
-+          v_len = ((v_tree_node & 255u) + 18u);
-+          v_len_state = 3u;
-+        } while (0);
-+        v_slot = 1u;
-+        while (v_slot < 64u) {
-+          v_prob = ((uint32_t)(self->private_data.f_probs_slot[v_len_state][v_slot]));
-+          v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+          if (v_bits < v_threshold) {
-+            v_range = v_threshold;
-+            v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+            self->private_data.f_probs_slot[v_len_state][v_slot] = ((uint16_t)(v_prob));
-+            v_slot = (v_slot << 1u);
-+          } else {
-+            v_bits -= v_threshold;
-+            v_range -= v_threshold;
-+            v_prob -= (v_prob >> 5u);
-+            self->private_data.f_probs_slot[v_len_state][v_slot] = ((uint16_t)(v_prob));
-+            v_slot = ((v_slot << 1u) | 1u);
-+          }
-+          if ((v_range >> 24u) == 0u) {
-+            if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+              status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
-+              goto exit;
-+            }
-+            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+            iop_a_src += 1u;
-+            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+            v_range <<= 8u;
-+          }
-+        }
-+        v_slot &= 63u;
-+        v_rep = v_slot;
-+        if (v_slot < 4u) {
-+        } else if (v_slot < 14u) {
-+          v_num_extra_bits = ((v_slot >> 1u) - 1u);
-+          v_rep = ((2u | (v_slot & 1u)) << v_num_extra_bits);
-+          v_index_small_dist_base = ((uint32_t)(v_rep - v_slot));
-+          v_index_small_dist_extra = 1u;
-+          v_dist_extra_bits = 0u;
-+          v_i = 0u;
-+          while (v_i < v_num_extra_bits) {
-+            v_index_small_dist = (((uint32_t)(v_index_small_dist_base + v_index_small_dist_extra)) & 127u);
-+            v_prob = ((uint32_t)(self->private_data.f_probs_small_dist[v_index_small_dist]));
-+            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+            if (v_bits < v_threshold) {
-+              v_range = v_threshold;
-+              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+              self->private_data.f_probs_small_dist[v_index_small_dist] = ((uint16_t)(v_prob));
-+              v_index_small_dist_extra = ((uint32_t)(v_index_small_dist_extra << 1u));
-+              v_i += 1u;
-+            } else {
-+              v_bits -= v_threshold;
-+              v_range -= v_threshold;
-+              v_prob -= (v_prob >> 5u);
-+              self->private_data.f_probs_small_dist[v_index_small_dist] = ((uint16_t)(v_prob));
-+              v_index_small_dist_extra = (((uint32_t)(v_index_small_dist_extra << 1u)) | 1u);
-+              v_dist_extra_bits |= (((uint32_t)(1u)) << v_i);
-+              v_i += 1u;
-+            }
-+            if ((v_range >> 24u) == 0u) {
-+              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+                status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
-+                goto exit;
-+              }
-+              v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+              iop_a_src += 1u;
-+              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+              v_range <<= 8u;
-+            }
-+          }
-+          v_rep += v_dist_extra_bits;
-+        } else {
-+          v_num_extra_bits = ((v_slot >> 1u) - 1u);
-+          v_rep = ((2u | (v_slot & 1u)) << v_num_extra_bits);
-+          v_dist_extra_bits = 0u;
-+          while (true) {
-+            v_range >>= 1u;
-+            v_bits -= v_range;
-+            v_high_bit_was_on = ((uint32_t)(0u - (v_bits >> 31u)));
-+            v_bits += (v_range & v_high_bit_was_on);
-+            v_dist_extra_bits = (((uint32_t)(v_dist_extra_bits << 1u)) | (((uint32_t)(v_high_bit_was_on + 1u)) & 1u));
-+            if ((v_range >> 24u) == 0u) {
-+              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+                status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
-+                goto exit;
-+              }
-+              v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+              iop_a_src += 1u;
-+              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+              v_range <<= 8u;
-+            }
-+            v_num_extra_bits -= 1u;
-+            if (v_num_extra_bits <= 4u) {
-+              break;
-+            }
-+          }
-+          v_dist_extra_bits <<= 4u;
-+          v_index_large_dist = 1u;
-+          while (true) {
-+            v_prob = ((uint32_t)(self->private_data.f_probs_large_dist[v_index_large_dist]));
-+            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+            if (v_bits < v_threshold) {
-+              v_range = v_threshold;
-+              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+              self->private_data.f_probs_large_dist[v_index_large_dist] = ((uint16_t)(v_prob));
-+              v_index_large_dist = (15u & ((uint32_t)(v_index_large_dist << 1u)));
-+            } else {
-+              v_bits -= v_threshold;
-+              v_range -= v_threshold;
-+              v_prob -= (v_prob >> 5u);
-+              self->private_data.f_probs_large_dist[v_index_large_dist] = ((uint16_t)(v_prob));
-+              v_index_large_dist = (15u & (((uint32_t)(v_index_large_dist << 1u)) | 1u));
-+              v_dist_extra_bits |= (((uint32_t)(1u)) << (4u - v_num_extra_bits));
-+            }
-+            if ((v_range >> 24u) == 0u) {
-+              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+                status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
-+                goto exit;
-+              }
-+              v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+              iop_a_src += 1u;
-+              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+              v_range <<= 8u;
-+            }
-+            v_num_extra_bits -= 1u;
-+            if (v_num_extra_bits <= 0u) {
-+              break;
-+            }
-+          }
-+          v_rep += v_dist_extra_bits;
-+        }
-+        if (v_rep >= 4294967295u) {
-+          self->private_impl.f_end_of_chunk = true;
-+          goto label__outer__break;
-+        }
-+        v_rep3 = v_rep2;
-+        v_rep2 = v_rep1;
-+        v_rep1 = v_rep0;
-+        v_rep0 = v_rep;
-+        v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_MATCH[v_state]));
-+        break;
-+      }
-+      v_bits -= v_threshold;
-+      v_range -= v_threshold;
-+      v_prob -= (v_prob >> 5u);
-+      self->private_data.f_probs_ao20[v_state] = ((uint16_t)(v_prob));
-+      if ((v_range >> 24u) == 0u) {
-+        v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+        iop_a_src += 1u;
-+        v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+        v_range <<= 8u;
-+      } else {
-+      }
-+      v_prob = ((uint32_t)(self->private_data.f_probs_ao40[v_state]));
-+      v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+      if (v_bits < v_threshold) {
-+        v_range = v_threshold;
-+        v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+        self->private_data.f_probs_ao40[v_state] = ((uint16_t)(v_prob));
-+        if ((v_range >> 24u) == 0u) {
-+          v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+          iop_a_src += 1u;
-+          v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+          v_range <<= 8u;
-+        } else {
-+        }
-+        v_index_ao41 = ((v_state << 4u) | ((uint32_t)((v_pos & v_pb_mask))));
-+        v_prob = ((uint32_t)(self->private_data.f_probs_ao41[v_index_ao41]));
-+        v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+        if (v_bits < v_threshold) {
-+          v_range = v_threshold;
-+          v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+          self->private_data.f_probs_ao41[v_index_ao41] = ((uint16_t)(v_prob));
-+          if ((v_range >> 24u) == 0u) {
-+            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+            iop_a_src += 1u;
-+            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+            v_range <<= 8u;
-+          }
-+          v_len = 1u;
-+          v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_SHORTREP[v_state]));
-+          break;
-+        }
-+        v_bits -= v_threshold;
-+        v_range -= v_threshold;
-+        v_prob -= (v_prob >> 5u);
-+        self->private_data.f_probs_ao41[v_index_ao41] = ((uint16_t)(v_prob));
-+        if ((v_range >> 24u) == 0u) {
-+          v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+          iop_a_src += 1u;
-+          v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+          v_range <<= 8u;
-+        }
-+      } else {
-+        v_bits -= v_threshold;
-+        v_range -= v_threshold;
-+        v_prob -= (v_prob >> 5u);
-+        self->private_data.f_probs_ao40[v_state] = ((uint16_t)(v_prob));
-+        if ((v_range >> 24u) == 0u) {
-+          v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+          iop_a_src += 1u;
-+          v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+          v_range <<= 8u;
-+        } else {
-+        }
-+        v_prob = ((uint32_t)(self->private_data.f_probs_ao60[v_state]));
-+        v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+        if (v_bits < v_threshold) {
-+          v_range = v_threshold;
-+          v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+          self->private_data.f_probs_ao60[v_state] = ((uint16_t)(v_prob));
-+          if ((v_range >> 24u) == 0u) {
-+            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+            iop_a_src += 1u;
-+            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+            v_range <<= 8u;
-+          }
-+          v_reptmp = v_rep1;
-+          v_rep1 = v_rep0;
-+          v_rep0 = v_reptmp;
-+        } else {
-+          v_bits -= v_threshold;
-+          v_range -= v_threshold;
-+          v_prob -= (v_prob >> 5u);
-+          self->private_data.f_probs_ao60[v_state] = ((uint16_t)(v_prob));
-+          if ((v_range >> 24u) == 0u) {
-+            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+            iop_a_src += 1u;
-+            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+            v_range <<= 8u;
-+          } else {
-+          }
-+          v_prob = ((uint32_t)(self->private_data.f_probs_ao63[v_state]));
-+          v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+          if (v_bits < v_threshold) {
-+            v_range = v_threshold;
-+            v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+            self->private_data.f_probs_ao63[v_state] = ((uint16_t)(v_prob));
-+            if ((v_range >> 24u) == 0u) {
-+              v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+              iop_a_src += 1u;
-+              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+              v_range <<= 8u;
-+            }
-+            v_reptmp = v_rep2;
-+            v_rep2 = v_rep1;
-+            v_rep1 = v_rep0;
-+            v_rep0 = v_reptmp;
-+          } else {
-+            v_bits -= v_threshold;
-+            v_range -= v_threshold;
-+            v_prob -= (v_prob >> 5u);
-+            self->private_data.f_probs_ao63[v_state] = ((uint16_t)(v_prob));
-+            if ((v_range >> 24u) == 0u) {
-+              v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+              iop_a_src += 1u;
-+              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+              v_range <<= 8u;
-+            }
-+            v_reptmp = v_rep3;
-+            v_rep3 = v_rep2;
-+            v_rep2 = v_rep1;
-+            v_rep1 = v_rep0;
-+            v_rep0 = v_reptmp;
-+          }
-+        }
-+      }
-+      do {
-+        v_prob = ((uint32_t)(self->private_data.f_probs_longrep_len_low[0u][0u]));
-+        v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+        if (v_bits < v_threshold) {
-+          v_range = v_threshold;
-+          v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+          self->private_data.f_probs_longrep_len_low[0u][0u] = ((uint16_t)(v_prob));
-+          if ((v_range >> 24u) == 0u) {
-+            if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+              status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
-+              goto exit;
-+            }
-+            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+            iop_a_src += 1u;
-+            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+            v_range <<= 8u;
-+          }
-+          v_index_len = ((uint32_t)((v_pos & v_pb_mask)));
-+          v_tree_node = 1u;
-+          while (v_tree_node < 8u) {
-+            v_prob = ((uint32_t)(self->private_data.f_probs_longrep_len_low[v_index_len][v_tree_node]));
-+            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+            if (v_bits < v_threshold) {
-+              v_range = v_threshold;
-+              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+              self->private_data.f_probs_longrep_len_low[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
-+              v_tree_node = (v_tree_node << 1u);
-+            } else {
-+              v_bits -= v_threshold;
-+              v_range -= v_threshold;
-+              v_prob -= (v_prob >> 5u);
-+              self->private_data.f_probs_longrep_len_low[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
-+              v_tree_node = ((v_tree_node << 1u) | 1u);
-+            }
-+            if ((v_range >> 24u) == 0u) {
-+              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+                status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
-+                goto exit;
-+              }
-+              v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+              iop_a_src += 1u;
-+              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+              v_range <<= 8u;
-+            }
-+          }
-+          v_len = ((v_tree_node & 7u) + 2u);
-+          v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_LONGREP[v_state]));
-+          break;
-+        }
-+        v_bits -= v_threshold;
-+        v_range -= v_threshold;
-+        v_prob -= (v_prob >> 5u);
-+        self->private_data.f_probs_longrep_len_low[0u][0u] = ((uint16_t)(v_prob));
-+        if ((v_range >> 24u) == 0u) {
-+          if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+            status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
-+            goto exit;
-+          }
-+          v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+          iop_a_src += 1u;
-+          v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+          v_range <<= 8u;
-+        }
-+        v_prob = ((uint32_t)(self->private_data.f_probs_longrep_len_mid[0u][0u]));
-+        v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+        if (v_bits < v_threshold) {
-+          v_range = v_threshold;
-+          v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+          self->private_data.f_probs_longrep_len_mid[0u][0u] = ((uint16_t)(v_prob));
-+          if ((v_range >> 24u) == 0u) {
-+            if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+              status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
-+              goto exit;
-+            }
-+            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+            iop_a_src += 1u;
-+            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+            v_range <<= 8u;
-+          }
-+          v_index_len = ((uint32_t)((v_pos & v_pb_mask)));
-+          v_tree_node = 1u;
-+          while (v_tree_node < 8u) {
-+            v_prob = ((uint32_t)(self->private_data.f_probs_longrep_len_mid[v_index_len][v_tree_node]));
-+            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+            if (v_bits < v_threshold) {
-+              v_range = v_threshold;
-+              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+              self->private_data.f_probs_longrep_len_mid[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
-+              v_tree_node = (v_tree_node << 1u);
-+            } else {
-+              v_bits -= v_threshold;
-+              v_range -= v_threshold;
-+              v_prob -= (v_prob >> 5u);
-+              self->private_data.f_probs_longrep_len_mid[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
-+              v_tree_node = ((v_tree_node << 1u) | 1u);
-+            }
-+            if ((v_range >> 24u) == 0u) {
-+              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+                status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
-+                goto exit;
-+              }
-+              v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+              iop_a_src += 1u;
-+              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+              v_range <<= 8u;
-+            }
-+          }
-+          v_len = ((v_tree_node & 7u) + 10u);
-+          v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_LONGREP[v_state]));
-+          break;
-+        }
-+        v_bits -= v_threshold;
-+        v_range -= v_threshold;
-+        v_prob -= (v_prob >> 5u);
-+        self->private_data.f_probs_longrep_len_mid[0u][0u] = ((uint16_t)(v_prob));
-+        if ((v_range >> 24u) == 0u) {
-+          if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+            status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
-+            goto exit;
-+          }
-+          v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+          iop_a_src += 1u;
-+          v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+          v_range <<= 8u;
-+        }
-+        v_tree_node = 1u;
-+        while (v_tree_node < 256u) {
-+          v_prob = ((uint32_t)(self->private_data.f_probs_longrep_len_high[0u][v_tree_node]));
-+          v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+          if (v_bits < v_threshold) {
-+            v_range = v_threshold;
-+            v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+            self->private_data.f_probs_longrep_len_high[0u][v_tree_node] = ((uint16_t)(v_prob));
-+            v_tree_node = (v_tree_node << 1u);
-+          } else {
-+            v_bits -= v_threshold;
-+            v_range -= v_threshold;
-+            v_prob -= (v_prob >> 5u);
-+            self->private_data.f_probs_longrep_len_high[0u][v_tree_node] = ((uint16_t)(v_prob));
-+            v_tree_node = ((v_tree_node << 1u) | 1u);
-+          }
-+          if ((v_range >> 24u) == 0u) {
-+            if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+              status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_i_o);
-+              goto exit;
-+            }
-+            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+            iop_a_src += 1u;
-+            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+            v_range <<= 8u;
-+          }
-+        }
-+        v_len = ((v_tree_node & 255u) + 18u);
-+        v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_LONGREP[v_state]));
-+      } while (0);
-+    } while (0);
-+    v_dist = (v_rep0 + 1u);
-+    if ((((uint64_t)(v_dist)) > v_pos) || (((uint64_t)(v_dist)) > ((uint64_t)(self->private_impl.f_dict_size)))) {
-+      status = wuffs_base__make_status(wuffs_lzma__error__bad_distance);
-+      goto exit;
-+    }
-+    v_pos += ((uint64_t)(v_len));
-+    if (((uint64_t)(v_dist)) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
-+      v_adj_dist = ((uint32_t)((((uint64_t)(v_dist)) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
-+      if (v_adj_dist > self->private_impl.f_dict_seen) {
-+        status = wuffs_base__make_status(wuffs_lzma__error__bad_distance);
-+        goto exit;
-+      }
-+      v_wb_index = ((uint64_t)(((uint64_t)(self->private_impl.f_dict_workbuf_index)) - ((uint64_t)(v_adj_dist))));
-+      while (v_wb_index >= 9223372036854775808u) {
-+        v_wb_index += ((uint64_t)(self->private_impl.f_dict_size));
-+      }
-+      if (v_wb_index >= ((uint64_t)(a_workbuf.len))) {
-+        status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
-+        goto exit;
-+      }
-+      if (v_len < v_adj_dist) {
-+        wuffs_private_impl__io_writer__limited_copy_u32_from_slice(
-+            &iop_a_dst, io2_a_dst,(v_len + 1u), wuffs_base__slice_u8__subslice_i(a_workbuf, v_wb_index));
-+        if ( ! (iop_a_dst > io1_a_dst)) {
-+          status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
-+          goto exit;
-+        }
-+        v_match_byte = ((uint32_t)(iop_a_dst[-1]));
-+        iop_a_dst--;
-+        if ( ! (iop_a_dst > io1_a_dst)) {
-+          status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
-+          goto exit;
-+        }
-+        v_prev_byte = iop_a_dst[-1];
-+        continue;
-+      } else if (v_len == v_adj_dist) {
-+        wuffs_private_impl__io_writer__limited_copy_u32_from_slice(
-+            &iop_a_dst, io2_a_dst,v_len, wuffs_base__slice_u8__subslice_i(a_workbuf, v_wb_index));
-+        wuffs_private_impl__io_writer__limited_copy_u32_from_history(
-+            &iop_a_dst, io0_a_dst, io2_a_dst, 1u, v_dist);
-+        if ( ! (iop_a_dst > io1_a_dst)) {
-+          status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
-+          goto exit;
-+        }
-+        v_match_byte = ((uint32_t)(iop_a_dst[-1]));
-+        iop_a_dst--;
-+        if ( ! (iop_a_dst > io1_a_dst)) {
-+          status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
-+          goto exit;
-+        }
-+        v_prev_byte = iop_a_dst[-1];
-+        continue;
-+      }
-+      wuffs_private_impl__io_writer__limited_copy_u32_from_slice(
-+          &iop_a_dst, io2_a_dst,v_adj_dist, wuffs_base__slice_u8__subslice_i(a_workbuf, v_wb_index));
-+      v_len -= v_adj_dist;
-+      if ((((uint64_t)(v_len)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_len + 8u))) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)(v_dist)) > ((uint64_t)(iop_a_dst - io0_a_dst)))) {
-+        status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
-+        goto exit;
-+      }
-+    }
-+    if (v_dist >= 8u) {
-+      v_match_cusp = wuffs_private_impl__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast_return_cusp(
-+          &iop_a_dst, io0_a_dst, io2_a_dst, v_len, v_dist);
-+      v_match_byte = (v_match_cusp >> 8u);
-+      v_prev_byte = ((uint8_t)(v_match_cusp));
-+    } else {
-+      v_match_cusp = wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast_return_cusp(
-+          &iop_a_dst, io0_a_dst, io2_a_dst, v_len, v_dist);
-+      v_match_byte = (v_match_cusp >> 8u);
-+      v_prev_byte = ((uint8_t)(v_match_cusp));
-+    }
-+  }
-+  label__outer__break:;
-+  self->private_impl.f_stashed_bytes[0u] = v_prev_byte;
-+  self->private_impl.f_stashed_bytes[1u] = ((uint8_t)(v_match_byte));
-+  self->private_impl.f_stashed_bits = v_bits;
-+  self->private_impl.f_stashed_range = v_range;
-+  self->private_impl.f_stashed_state = v_state;
-+  self->private_impl.f_stashed_rep0 = v_rep0;
-+  self->private_impl.f_stashed_rep1 = v_rep1;
-+  self->private_impl.f_stashed_rep2 = v_rep2;
-+  self->private_impl.f_stashed_rep3 = v_rep3;
-+  self->private_impl.f_stashed_pos = v_pos;
-+  self->private_impl.f_stashed_pos_end = v_pos_end;
-+  goto exit;
-+  exit:
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+  }
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func lzma.decoder.decode_bitstream_slow
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_lzma__decoder__decode_bitstream_slow(
-+    wuffs_lzma__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_c8 = 0;
-+  uint32_t v_bits = 0;
-+  uint32_t v_range = 0;
-+  uint32_t v_state = 0;
-+  uint32_t v_rep0 = 0;
-+  uint32_t v_rep1 = 0;
-+  uint32_t v_rep2 = 0;
-+  uint32_t v_rep3 = 0;
-+  uint32_t v_reptmp = 0;
-+  uint32_t v_rep = 0;
-+  uint64_t v_pos = 0;
-+  uint64_t v_pos_end = 0;
-+  uint32_t v_lc = 0;
-+  uint64_t v_lp_mask = 0;
-+  uint64_t v_pb_mask = 0;
-+  uint32_t v_prob = 0;
-+  uint32_t v_threshold = 0;
-+  uint32_t v_tree_node = 0;
-+  uint8_t v_prev_byte = 0;
-+  uint32_t v_match_byte = 0;
-+  uint32_t v_match_cusp = 0;
-+  uint32_t v_len_state = 0;
-+  uint32_t v_slot = 0;
-+  uint32_t v_len = 0;
-+  uint32_t v_lanl_offset = 0;
-+  uint32_t v_lanl_old_offset = 0;
-+  uint32_t v_lanl_index = 0;
-+  uint32_t v_num_extra_bits = 0;
-+  uint32_t v_dist_extra_bits = 0;
-+  uint32_t v_high_bit_was_on = 0;
-+  uint32_t v_i = 0;
-+  uint32_t v_index_ao00 = 0;
-+  uint32_t v_index_ao41 = 0;
-+  uint32_t v_index_lit = 0;
-+  uint32_t v_index_len = 0;
-+  uint32_t v_index_small_dist_base = 0;
-+  uint32_t v_index_small_dist_extra = 0;
-+  uint32_t v_index_small_dist = 0;
-+  uint32_t v_index_large_dist = 0;
-+  uint32_t v_dist = 0;
-+  uint32_t v_adj_dist = 0;
-+  uint64_t v_wb_index = 0;
-+
-+  uint8_t* iop_a_dst = NULL;
-+  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-+    }
-+  }
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_bitstream_slow;
-+  if (coro_susp_point) {
-+    v_bits = self->private_data.s_decode_bitstream_slow.v_bits;
-+    v_range = self->private_data.s_decode_bitstream_slow.v_range;
-+    v_state = self->private_data.s_decode_bitstream_slow.v_state;
-+    v_rep0 = self->private_data.s_decode_bitstream_slow.v_rep0;
-+    v_rep1 = self->private_data.s_decode_bitstream_slow.v_rep1;
-+    v_rep2 = self->private_data.s_decode_bitstream_slow.v_rep2;
-+    v_rep3 = self->private_data.s_decode_bitstream_slow.v_rep3;
-+    v_rep = self->private_data.s_decode_bitstream_slow.v_rep;
-+    v_pos = self->private_data.s_decode_bitstream_slow.v_pos;
-+    v_pos_end = self->private_data.s_decode_bitstream_slow.v_pos_end;
-+    v_lc = self->private_data.s_decode_bitstream_slow.v_lc;
-+    v_lp_mask = self->private_data.s_decode_bitstream_slow.v_lp_mask;
-+    v_pb_mask = self->private_data.s_decode_bitstream_slow.v_pb_mask;
-+    v_tree_node = self->private_data.s_decode_bitstream_slow.v_tree_node;
-+    v_prev_byte = self->private_data.s_decode_bitstream_slow.v_prev_byte;
-+    v_match_byte = self->private_data.s_decode_bitstream_slow.v_match_byte;
-+    v_len_state = self->private_data.s_decode_bitstream_slow.v_len_state;
-+    v_slot = self->private_data.s_decode_bitstream_slow.v_slot;
-+    v_len = self->private_data.s_decode_bitstream_slow.v_len;
-+    v_lanl_offset = self->private_data.s_decode_bitstream_slow.v_lanl_offset;
-+    v_num_extra_bits = self->private_data.s_decode_bitstream_slow.v_num_extra_bits;
-+    v_dist_extra_bits = self->private_data.s_decode_bitstream_slow.v_dist_extra_bits;
-+    v_i = self->private_data.s_decode_bitstream_slow.v_i;
-+    v_index_lit = self->private_data.s_decode_bitstream_slow.v_index_lit;
-+    v_index_len = self->private_data.s_decode_bitstream_slow.v_index_len;
-+    v_index_small_dist_base = self->private_data.s_decode_bitstream_slow.v_index_small_dist_base;
-+    v_index_small_dist_extra = self->private_data.s_decode_bitstream_slow.v_index_small_dist_extra;
-+    v_index_large_dist = self->private_data.s_decode_bitstream_slow.v_index_large_dist;
-+    v_dist = self->private_data.s_decode_bitstream_slow.v_dist;
-+  }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    v_prev_byte = self->private_impl.f_stashed_bytes[0u];
-+    v_match_byte = ((uint32_t)(self->private_impl.f_stashed_bytes[1u]));
-+    v_bits = self->private_impl.f_stashed_bits;
-+    v_range = self->private_impl.f_stashed_range;
-+    v_state = self->private_impl.f_stashed_state;
-+    v_rep0 = self->private_impl.f_stashed_rep0;
-+    v_rep1 = self->private_impl.f_stashed_rep1;
-+    v_rep2 = self->private_impl.f_stashed_rep2;
-+    v_rep3 = self->private_impl.f_stashed_rep3;
-+    v_pos = self->private_impl.f_stashed_pos;
-+    v_pos_end = self->private_impl.f_stashed_pos_end;
-+    v_lc = self->private_impl.f_lc;
-+    v_lp_mask = ((((uint64_t)(1u)) << self->private_impl.f_lp) - 1u);
-+    v_pb_mask = ((((uint64_t)(1u)) << self->private_impl.f_pb) - 1u);
-+    while ( ! (self->private_impl.p_decode_bitstream_slow != 0)) {
-+      if (v_pos >= v_pos_end) {
-+        self->private_impl.f_end_of_chunk = true;
-+        break;
-+      }
-+      v_index_ao00 = ((v_state << 4u) | ((uint32_t)((v_pos & v_pb_mask))));
-+      v_prob = ((uint32_t)(self->private_data.f_probs_ao00[v_index_ao00]));
-+      v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+      if (v_bits < v_threshold) {
-+        v_range = v_threshold;
-+        v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+        self->private_data.f_probs_ao00[v_index_ao00] = ((uint16_t)(v_prob));
-+        if ((v_range >> 24u) == 0u) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint8_t t_0 = *iop_a_src++;
-+            v_c8 = t_0;
-+          }
-+          v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+          v_range <<= 8u;
-+        }
-+        v_index_lit = (15u & ((((uint32_t)((v_pos & v_lp_mask))) << v_lc) | (((uint32_t)(v_prev_byte)) >> (8u - v_lc))));
-+        if (v_state >= 7u) {
-+          v_lanl_offset = 256u;
-+          v_tree_node = 1u;
-+          while (v_tree_node < 256u) {
-+            v_match_byte <<= 1u;
-+            v_lanl_old_offset = v_lanl_offset;
-+            v_lanl_offset &= v_match_byte;
-+            v_lanl_index = (v_lanl_offset + v_lanl_old_offset + v_tree_node);
-+            v_prob = ((uint32_t)(self->private_data.f_probs_lit[v_index_lit][v_lanl_index]));
-+            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+            if (v_bits < v_threshold) {
-+              v_lanl_offset = ((v_lanl_offset ^ v_lanl_old_offset) & 256u);
-+              v_range = v_threshold;
-+              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+              self->private_data.f_probs_lit[v_index_lit][v_lanl_index] = ((uint16_t)(v_prob));
-+              v_tree_node = (v_tree_node << 1u);
-+            } else {
-+              v_bits -= v_threshold;
-+              v_range -= v_threshold;
-+              v_prob -= (v_prob >> 5u);
-+              self->private_data.f_probs_lit[v_index_lit][v_lanl_index] = ((uint16_t)(v_prob));
-+              v_tree_node = ((v_tree_node << 1u) | 1u);
-+            }
-+            if ((v_range >> 24u) == 0u) {
-+              {
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint8_t t_1 = *iop_a_src++;
-+                v_c8 = t_1;
-+              }
-+              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+              v_range <<= 8u;
-+            }
-+          }
-+        } else {
-+          v_tree_node = 1u;
-+          while (v_tree_node < 256u) {
-+            v_prob = ((uint32_t)(self->private_data.f_probs_lit[v_index_lit][v_tree_node]));
-+            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+            if (v_bits < v_threshold) {
-+              v_range = v_threshold;
-+              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+              self->private_data.f_probs_lit[v_index_lit][v_tree_node] = ((uint16_t)(v_prob));
-+              v_tree_node = (v_tree_node << 1u);
-+            } else {
-+              v_bits -= v_threshold;
-+              v_range -= v_threshold;
-+              v_prob -= (v_prob >> 5u);
-+              self->private_data.f_probs_lit[v_index_lit][v_tree_node] = ((uint16_t)(v_prob));
-+              v_tree_node = ((v_tree_node << 1u) | 1u);
-+            }
-+            if ((v_range >> 24u) == 0u) {
-+              {
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint8_t t_2 = *iop_a_src++;
-+                v_c8 = t_2;
-+              }
-+              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+              v_range <<= 8u;
-+            }
-+          }
-+        }
-+        v_prev_byte = ((uint8_t)(v_tree_node));
-+        self->private_data.s_decode_bitstream_slow.scratch = v_prev_byte;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+        if (iop_a_dst == io2_a_dst) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+          goto suspend;
-+        }
-+        *iop_a_dst++ = ((uint8_t)(self->private_data.s_decode_bitstream_slow.scratch));
-+        v_pos += 1u;
-+        v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_LITERAL[v_state]));
-+        continue;
-+      }
-+      v_bits -= v_threshold;
-+      v_range -= v_threshold;
-+      v_prob -= (v_prob >> 5u);
-+      self->private_data.f_probs_ao00[v_index_ao00] = ((uint16_t)(v_prob));
-+      if ((v_range >> 24u) == 0u) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_3 = *iop_a_src++;
-+          v_c8 = t_3;
-+        }
-+        v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+        v_range <<= 8u;
-+      }
-+      do {
-+        v_prob = ((uint32_t)(self->private_data.f_probs_ao20[v_state]));
-+        v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+        if (v_bits < v_threshold) {
-+          v_range = v_threshold;
-+          v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+          self->private_data.f_probs_ao20[v_state] = ((uint16_t)(v_prob));
-+          if ((v_range >> 24u) == 0u) {
-+            {
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint8_t t_4 = *iop_a_src++;
-+              v_c8 = t_4;
-+            }
-+            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+            v_range <<= 8u;
-+          }
-+          do {
-+            v_prob = ((uint32_t)(self->private_data.f_probs_match_len_low[0u][0u]));
-+            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+            if (v_bits < v_threshold) {
-+              v_range = v_threshold;
-+              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+              self->private_data.f_probs_match_len_low[0u][0u] = ((uint16_t)(v_prob));
-+              if ((v_range >> 24u) == 0u) {
-+                {
-+                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                    goto suspend;
-+                  }
-+                  uint8_t t_5 = *iop_a_src++;
-+                  v_c8 = t_5;
-+                }
-+                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+                v_range <<= 8u;
-+              }
-+              v_index_len = ((uint32_t)((v_pos & v_pb_mask)));
-+              v_tree_node = 1u;
-+              while (v_tree_node < 8u) {
-+                v_prob = ((uint32_t)(self->private_data.f_probs_match_len_low[v_index_len][v_tree_node]));
-+                v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+                if (v_bits < v_threshold) {
-+                  v_range = v_threshold;
-+                  v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+                  self->private_data.f_probs_match_len_low[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
-+                  v_tree_node = (v_tree_node << 1u);
-+                } else {
-+                  v_bits -= v_threshold;
-+                  v_range -= v_threshold;
-+                  v_prob -= (v_prob >> 5u);
-+                  self->private_data.f_probs_match_len_low[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
-+                  v_tree_node = ((v_tree_node << 1u) | 1u);
-+                }
-+                if ((v_range >> 24u) == 0u) {
-+                  {
-+                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+                    if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                      goto suspend;
-+                    }
-+                    uint8_t t_6 = *iop_a_src++;
-+                    v_c8 = t_6;
-+                  }
-+                  v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+                  v_range <<= 8u;
-+                }
-+              }
-+              v_len_state = ((uint32_t)(WUFFS_LZMA__CLAMP_NO_MORE_THAN_3[(v_tree_node & 7u)]));
-+              v_len = ((v_tree_node & 7u) + 2u);
-+              break;
-+            }
-+            v_bits -= v_threshold;
-+            v_range -= v_threshold;
-+            v_prob -= (v_prob >> 5u);
-+            self->private_data.f_probs_match_len_low[0u][0u] = ((uint16_t)(v_prob));
-+            if ((v_range >> 24u) == 0u) {
-+              {
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint8_t t_7 = *iop_a_src++;
-+                v_c8 = t_7;
-+              }
-+              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+              v_range <<= 8u;
-+            }
-+            v_prob = ((uint32_t)(self->private_data.f_probs_match_len_mid[0u][0u]));
-+            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+            if (v_bits < v_threshold) {
-+              v_range = v_threshold;
-+              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+              self->private_data.f_probs_match_len_mid[0u][0u] = ((uint16_t)(v_prob));
-+              if ((v_range >> 24u) == 0u) {
-+                {
-+                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
-+                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                    goto suspend;
-+                  }
-+                  uint8_t t_8 = *iop_a_src++;
-+                  v_c8 = t_8;
-+                }
-+                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+                v_range <<= 8u;
-+              }
-+              v_index_len = ((uint32_t)((v_pos & v_pb_mask)));
-+              v_tree_node = 1u;
-+              while (v_tree_node < 8u) {
-+                v_prob = ((uint32_t)(self->private_data.f_probs_match_len_mid[v_index_len][v_tree_node]));
-+                v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+                if (v_bits < v_threshold) {
-+                  v_range = v_threshold;
-+                  v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+                  self->private_data.f_probs_match_len_mid[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
-+                  v_tree_node = (v_tree_node << 1u);
-+                } else {
-+                  v_bits -= v_threshold;
-+                  v_range -= v_threshold;
-+                  v_prob -= (v_prob >> 5u);
-+                  self->private_data.f_probs_match_len_mid[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
-+                  v_tree_node = ((v_tree_node << 1u) | 1u);
-+                }
-+                if ((v_range >> 24u) == 0u) {
-+                  {
-+                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
-+                    if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                      goto suspend;
-+                    }
-+                    uint8_t t_9 = *iop_a_src++;
-+                    v_c8 = t_9;
-+                  }
-+                  v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+                  v_range <<= 8u;
-+                }
-+              }
-+              v_len = ((v_tree_node & 7u) + 10u);
-+              v_len_state = 3u;
-+              break;
-+            }
-+            v_bits -= v_threshold;
-+            v_range -= v_threshold;
-+            v_prob -= (v_prob >> 5u);
-+            self->private_data.f_probs_match_len_mid[0u][0u] = ((uint16_t)(v_prob));
-+            if ((v_range >> 24u) == 0u) {
-+              {
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint8_t t_10 = *iop_a_src++;
-+                v_c8 = t_10;
-+              }
-+              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+              v_range <<= 8u;
-+            }
-+            v_tree_node = 1u;
-+            while (v_tree_node < 256u) {
-+              v_prob = ((uint32_t)(self->private_data.f_probs_match_len_high[0u][v_tree_node]));
-+              v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+              if (v_bits < v_threshold) {
-+                v_range = v_threshold;
-+                v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+                self->private_data.f_probs_match_len_high[0u][v_tree_node] = ((uint16_t)(v_prob));
-+                v_tree_node = (v_tree_node << 1u);
-+              } else {
-+                v_bits -= v_threshold;
-+                v_range -= v_threshold;
-+                v_prob -= (v_prob >> 5u);
-+                self->private_data.f_probs_match_len_high[0u][v_tree_node] = ((uint16_t)(v_prob));
-+                v_tree_node = ((v_tree_node << 1u) | 1u);
-+              }
-+              if ((v_range >> 24u) == 0u) {
-+                {
-+                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
-+                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                    goto suspend;
-+                  }
-+                  uint8_t t_11 = *iop_a_src++;
-+                  v_c8 = t_11;
-+                }
-+                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+                v_range <<= 8u;
-+              }
-+            }
-+            v_len = ((v_tree_node & 255u) + 18u);
-+            v_len_state = 3u;
-+          } while (0);
-+          v_slot = 1u;
-+          while (v_slot < 64u) {
-+            v_prob = ((uint32_t)(self->private_data.f_probs_slot[v_len_state][v_slot]));
-+            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+            if (v_bits < v_threshold) {
-+              v_range = v_threshold;
-+              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+              self->private_data.f_probs_slot[v_len_state][v_slot] = ((uint16_t)(v_prob));
-+              v_slot = (v_slot << 1u);
-+            } else {
-+              v_bits -= v_threshold;
-+              v_range -= v_threshold;
-+              v_prob -= (v_prob >> 5u);
-+              self->private_data.f_probs_slot[v_len_state][v_slot] = ((uint16_t)(v_prob));
-+              v_slot = ((v_slot << 1u) | 1u);
-+            }
-+            if ((v_range >> 24u) == 0u) {
-+              {
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint8_t t_12 = *iop_a_src++;
-+                v_c8 = t_12;
-+              }
-+              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+              v_range <<= 8u;
-+            }
-+          }
-+          v_slot &= 63u;
-+          v_rep = v_slot;
-+          if (v_slot < 4u) {
-+          } else if (v_slot < 14u) {
-+            v_num_extra_bits = ((v_slot >> 1u) - 1u);
-+            v_rep = ((2u | (v_slot & 1u)) << v_num_extra_bits);
-+            v_index_small_dist_base = ((uint32_t)(v_rep - v_slot));
-+            v_index_small_dist_extra = 1u;
-+            v_dist_extra_bits = 0u;
-+            v_i = 0u;
-+            while (v_i < v_num_extra_bits) {
-+              v_index_small_dist = (((uint32_t)(v_index_small_dist_base + v_index_small_dist_extra)) & 127u);
-+              v_prob = ((uint32_t)(self->private_data.f_probs_small_dist[v_index_small_dist]));
-+              v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+              if (v_bits < v_threshold) {
-+                v_range = v_threshold;
-+                v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+                self->private_data.f_probs_small_dist[v_index_small_dist] = ((uint16_t)(v_prob));
-+                v_index_small_dist_extra = ((uint32_t)(v_index_small_dist_extra << 1u));
-+                v_i += 1u;
-+              } else {
-+                v_bits -= v_threshold;
-+                v_range -= v_threshold;
-+                v_prob -= (v_prob >> 5u);
-+                self->private_data.f_probs_small_dist[v_index_small_dist] = ((uint16_t)(v_prob));
-+                v_index_small_dist_extra = (((uint32_t)(v_index_small_dist_extra << 1u)) | 1u);
-+                v_dist_extra_bits |= (((uint32_t)(1u)) << v_i);
-+                v_i += 1u;
-+              }
-+              if ((v_range >> 24u) == 0u) {
-+                {
-+                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
-+                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                    goto suspend;
-+                  }
-+                  uint8_t t_13 = *iop_a_src++;
-+                  v_c8 = t_13;
-+                }
-+                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+                v_range <<= 8u;
-+              }
-+            }
-+            v_rep += v_dist_extra_bits;
-+          } else {
-+            v_num_extra_bits = ((v_slot >> 1u) - 1u);
-+            v_rep = ((2u | (v_slot & 1u)) << v_num_extra_bits);
-+            v_dist_extra_bits = 0u;
-+            while (true) {
-+              v_range >>= 1u;
-+              v_bits -= v_range;
-+              v_high_bit_was_on = ((uint32_t)(0u - (v_bits >> 31u)));
-+              v_bits += (v_range & v_high_bit_was_on);
-+              v_dist_extra_bits = (((uint32_t)(v_dist_extra_bits << 1u)) | (((uint32_t)(v_high_bit_was_on + 1u)) & 1u));
-+              if ((v_range >> 24u) == 0u) {
-+                {
-+                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
-+                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                    goto suspend;
-+                  }
-+                  uint8_t t_14 = *iop_a_src++;
-+                  v_c8 = t_14;
-+                }
-+                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+                v_range <<= 8u;
-+              }
-+              v_num_extra_bits -= 1u;
-+              if (v_num_extra_bits <= 4u) {
-+                break;
-+              }
-+            }
-+            v_dist_extra_bits <<= 4u;
-+            v_index_large_dist = 1u;
-+            while (true) {
-+              v_prob = ((uint32_t)(self->private_data.f_probs_large_dist[v_index_large_dist]));
-+              v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+              if (v_bits < v_threshold) {
-+                v_range = v_threshold;
-+                v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+                self->private_data.f_probs_large_dist[v_index_large_dist] = ((uint16_t)(v_prob));
-+                v_index_large_dist = (15u & ((uint32_t)(v_index_large_dist << 1u)));
-+              } else {
-+                v_bits -= v_threshold;
-+                v_range -= v_threshold;
-+                v_prob -= (v_prob >> 5u);
-+                self->private_data.f_probs_large_dist[v_index_large_dist] = ((uint16_t)(v_prob));
-+                v_index_large_dist = (15u & (((uint32_t)(v_index_large_dist << 1u)) | 1u));
-+                v_dist_extra_bits |= (((uint32_t)(1u)) << (4u - v_num_extra_bits));
-+              }
-+              if ((v_range >> 24u) == 0u) {
-+                {
-+                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT(17);
-+                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                    goto suspend;
-+                  }
-+                  uint8_t t_15 = *iop_a_src++;
-+                  v_c8 = t_15;
-+                }
-+                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+                v_range <<= 8u;
-+              }
-+              v_num_extra_bits -= 1u;
-+              if (v_num_extra_bits <= 0u) {
-+                break;
-+              }
-+            }
-+            v_rep += v_dist_extra_bits;
-+          }
-+          if (v_rep >= 4294967295u) {
-+            self->private_impl.f_end_of_chunk = true;
-+            goto label__outer__break;
-+          }
-+          v_rep3 = v_rep2;
-+          v_rep2 = v_rep1;
-+          v_rep1 = v_rep0;
-+          v_rep0 = v_rep;
-+          v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_MATCH[v_state]));
-+          break;
-+        }
-+        v_bits -= v_threshold;
-+        v_range -= v_threshold;
-+        v_prob -= (v_prob >> 5u);
-+        self->private_data.f_probs_ao20[v_state] = ((uint16_t)(v_prob));
-+        if ((v_range >> 24u) == 0u) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(18);
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint8_t t_16 = *iop_a_src++;
-+            v_c8 = t_16;
-+          }
-+          v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+          v_range <<= 8u;
-+        }
-+        v_prob = ((uint32_t)(self->private_data.f_probs_ao40[v_state]));
-+        v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+        if (v_bits < v_threshold) {
-+          v_range = v_threshold;
-+          v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+          self->private_data.f_probs_ao40[v_state] = ((uint16_t)(v_prob));
-+          if ((v_range >> 24u) == 0u) {
-+            {
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(19);
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint8_t t_17 = *iop_a_src++;
-+              v_c8 = t_17;
-+            }
-+            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+            v_range <<= 8u;
-+          }
-+          v_index_ao41 = ((v_state << 4u) | ((uint32_t)((v_pos & v_pb_mask))));
-+          v_prob = ((uint32_t)(self->private_data.f_probs_ao41[v_index_ao41]));
-+          v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+          if (v_bits < v_threshold) {
-+            v_range = v_threshold;
-+            v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+            self->private_data.f_probs_ao41[v_index_ao41] = ((uint16_t)(v_prob));
-+            if ((v_range >> 24u) == 0u) {
-+              {
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(20);
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint8_t t_18 = *iop_a_src++;
-+                v_c8 = t_18;
-+              }
-+              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+              v_range <<= 8u;
-+            }
-+            v_len = 1u;
-+            v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_SHORTREP[v_state]));
-+            break;
-+          }
-+          v_bits -= v_threshold;
-+          v_range -= v_threshold;
-+          v_prob -= (v_prob >> 5u);
-+          self->private_data.f_probs_ao41[v_index_ao41] = ((uint16_t)(v_prob));
-+          if ((v_range >> 24u) == 0u) {
-+            {
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(21);
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint8_t t_19 = *iop_a_src++;
-+              v_c8 = t_19;
-+            }
-+            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+            v_range <<= 8u;
-+          }
-+        } else {
-+          v_bits -= v_threshold;
-+          v_range -= v_threshold;
-+          v_prob -= (v_prob >> 5u);
-+          self->private_data.f_probs_ao40[v_state] = ((uint16_t)(v_prob));
-+          if ((v_range >> 24u) == 0u) {
-+            {
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22);
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint8_t t_20 = *iop_a_src++;
-+              v_c8 = t_20;
-+            }
-+            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+            v_range <<= 8u;
-+          }
-+          v_prob = ((uint32_t)(self->private_data.f_probs_ao60[v_state]));
-+          v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+          if (v_bits < v_threshold) {
-+            v_range = v_threshold;
-+            v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+            self->private_data.f_probs_ao60[v_state] = ((uint16_t)(v_prob));
-+            if ((v_range >> 24u) == 0u) {
-+              {
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(23);
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint8_t t_21 = *iop_a_src++;
-+                v_c8 = t_21;
-+              }
-+              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+              v_range <<= 8u;
-+            }
-+            v_reptmp = v_rep1;
-+            v_rep1 = v_rep0;
-+            v_rep0 = v_reptmp;
-+          } else {
-+            v_bits -= v_threshold;
-+            v_range -= v_threshold;
-+            v_prob -= (v_prob >> 5u);
-+            self->private_data.f_probs_ao60[v_state] = ((uint16_t)(v_prob));
-+            if ((v_range >> 24u) == 0u) {
-+              {
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(24);
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint8_t t_22 = *iop_a_src++;
-+                v_c8 = t_22;
-+              }
-+              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+              v_range <<= 8u;
-+            }
-+            v_prob = ((uint32_t)(self->private_data.f_probs_ao63[v_state]));
-+            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+            if (v_bits < v_threshold) {
-+              v_range = v_threshold;
-+              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+              self->private_data.f_probs_ao63[v_state] = ((uint16_t)(v_prob));
-+              if ((v_range >> 24u) == 0u) {
-+                {
-+                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT(25);
-+                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                    goto suspend;
-+                  }
-+                  uint8_t t_23 = *iop_a_src++;
-+                  v_c8 = t_23;
-+                }
-+                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+                v_range <<= 8u;
-+              }
-+              v_reptmp = v_rep2;
-+              v_rep2 = v_rep1;
-+              v_rep1 = v_rep0;
-+              v_rep0 = v_reptmp;
-+            } else {
-+              v_bits -= v_threshold;
-+              v_range -= v_threshold;
-+              v_prob -= (v_prob >> 5u);
-+              self->private_data.f_probs_ao63[v_state] = ((uint16_t)(v_prob));
-+              if ((v_range >> 24u) == 0u) {
-+                {
-+                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT(26);
-+                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                    goto suspend;
-+                  }
-+                  uint8_t t_24 = *iop_a_src++;
-+                  v_c8 = t_24;
-+                }
-+                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+                v_range <<= 8u;
-+              }
-+              v_reptmp = v_rep3;
-+              v_rep3 = v_rep2;
-+              v_rep2 = v_rep1;
-+              v_rep1 = v_rep0;
-+              v_rep0 = v_reptmp;
-+            }
-+          }
-+        }
-+        do {
-+          v_prob = ((uint32_t)(self->private_data.f_probs_longrep_len_low[0u][0u]));
-+          v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+          if (v_bits < v_threshold) {
-+            v_range = v_threshold;
-+            v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+            self->private_data.f_probs_longrep_len_low[0u][0u] = ((uint16_t)(v_prob));
-+            if ((v_range >> 24u) == 0u) {
-+              {
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(27);
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint8_t t_25 = *iop_a_src++;
-+                v_c8 = t_25;
-+              }
-+              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+              v_range <<= 8u;
-+            }
-+            v_index_len = ((uint32_t)((v_pos & v_pb_mask)));
-+            v_tree_node = 1u;
-+            while (v_tree_node < 8u) {
-+              v_prob = ((uint32_t)(self->private_data.f_probs_longrep_len_low[v_index_len][v_tree_node]));
-+              v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+              if (v_bits < v_threshold) {
-+                v_range = v_threshold;
-+                v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+                self->private_data.f_probs_longrep_len_low[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
-+                v_tree_node = (v_tree_node << 1u);
-+              } else {
-+                v_bits -= v_threshold;
-+                v_range -= v_threshold;
-+                v_prob -= (v_prob >> 5u);
-+                self->private_data.f_probs_longrep_len_low[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
-+                v_tree_node = ((v_tree_node << 1u) | 1u);
-+              }
-+              if ((v_range >> 24u) == 0u) {
-+                {
-+                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT(28);
-+                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                    goto suspend;
-+                  }
-+                  uint8_t t_26 = *iop_a_src++;
-+                  v_c8 = t_26;
-+                }
-+                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+                v_range <<= 8u;
-+              }
-+            }
-+            v_len = ((v_tree_node & 7u) + 2u);
-+            v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_LONGREP[v_state]));
-+            break;
-+          }
-+          v_bits -= v_threshold;
-+          v_range -= v_threshold;
-+          v_prob -= (v_prob >> 5u);
-+          self->private_data.f_probs_longrep_len_low[0u][0u] = ((uint16_t)(v_prob));
-+          if ((v_range >> 24u) == 0u) {
-+            {
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(29);
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint8_t t_27 = *iop_a_src++;
-+              v_c8 = t_27;
-+            }
-+            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+            v_range <<= 8u;
-+          }
-+          v_prob = ((uint32_t)(self->private_data.f_probs_longrep_len_mid[0u][0u]));
-+          v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+          if (v_bits < v_threshold) {
-+            v_range = v_threshold;
-+            v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+            self->private_data.f_probs_longrep_len_mid[0u][0u] = ((uint16_t)(v_prob));
-+            if ((v_range >> 24u) == 0u) {
-+              {
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(30);
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint8_t t_28 = *iop_a_src++;
-+                v_c8 = t_28;
-+              }
-+              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+              v_range <<= 8u;
-+            }
-+            v_index_len = ((uint32_t)((v_pos & v_pb_mask)));
-+            v_tree_node = 1u;
-+            while (v_tree_node < 8u) {
-+              v_prob = ((uint32_t)(self->private_data.f_probs_longrep_len_mid[v_index_len][v_tree_node]));
-+              v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+              if (v_bits < v_threshold) {
-+                v_range = v_threshold;
-+                v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+                self->private_data.f_probs_longrep_len_mid[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
-+                v_tree_node = (v_tree_node << 1u);
-+              } else {
-+                v_bits -= v_threshold;
-+                v_range -= v_threshold;
-+                v_prob -= (v_prob >> 5u);
-+                self->private_data.f_probs_longrep_len_mid[v_index_len][v_tree_node] = ((uint16_t)(v_prob));
-+                v_tree_node = ((v_tree_node << 1u) | 1u);
-+              }
-+              if ((v_range >> 24u) == 0u) {
-+                {
-+                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT(31);
-+                  if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                    goto suspend;
-+                  }
-+                  uint8_t t_29 = *iop_a_src++;
-+                  v_c8 = t_29;
-+                }
-+                v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+                v_range <<= 8u;
-+              }
-+            }
-+            v_len = ((v_tree_node & 7u) + 10u);
-+            v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_LONGREP[v_state]));
-+            break;
-+          }
-+          v_bits -= v_threshold;
-+          v_range -= v_threshold;
-+          v_prob -= (v_prob >> 5u);
-+          self->private_data.f_probs_longrep_len_mid[0u][0u] = ((uint16_t)(v_prob));
-+          if ((v_range >> 24u) == 0u) {
-+            {
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(32);
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint8_t t_30 = *iop_a_src++;
-+              v_c8 = t_30;
-+            }
-+            v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+            v_range <<= 8u;
-+          }
-+          v_tree_node = 1u;
-+          while (v_tree_node < 256u) {
-+            v_prob = ((uint32_t)(self->private_data.f_probs_longrep_len_high[0u][v_tree_node]));
-+            v_threshold = ((uint32_t)((v_range >> 11u) * v_prob));
-+            if (v_bits < v_threshold) {
-+              v_range = v_threshold;
-+              v_prob += (((uint32_t)(2048u - v_prob)) >> 5u);
-+              self->private_data.f_probs_longrep_len_high[0u][v_tree_node] = ((uint16_t)(v_prob));
-+              v_tree_node = (v_tree_node << 1u);
-+            } else {
-+              v_bits -= v_threshold;
-+              v_range -= v_threshold;
-+              v_prob -= (v_prob >> 5u);
-+              self->private_data.f_probs_longrep_len_high[0u][v_tree_node] = ((uint16_t)(v_prob));
-+              v_tree_node = ((v_tree_node << 1u) | 1u);
-+            }
-+            if ((v_range >> 24u) == 0u) {
-+              {
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(33);
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint8_t t_31 = *iop_a_src++;
-+                v_c8 = t_31;
-+              }
-+              v_bits = (((uint32_t)(v_bits << 8u)) | ((uint32_t)(v_c8)));
-+              v_range <<= 8u;
-+            }
-+          }
-+          v_len = ((v_tree_node & 255u) + 18u);
-+          v_state = ((uint32_t)(WUFFS_LZMA__STATE_TRANSITION_LONGREP[v_state]));
-+        } while (0);
-+      } while (0);
-+      v_dist = (v_rep0 + 1u);
-+      if ((((uint64_t)(v_dist)) > v_pos) || (((uint64_t)(v_dist)) > ((uint64_t)(self->private_impl.f_dict_size)))) {
-+        status = wuffs_base__make_status(wuffs_lzma__error__bad_distance);
-+        goto exit;
-+      }
-+      v_pos += ((uint64_t)(v_len));
-+      while (274u > ((uint64_t)(io2_a_dst - iop_a_dst))) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(34);
-+      }
-+      if (((uint64_t)(v_dist)) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
-+        v_adj_dist = ((uint32_t)((((uint64_t)(v_dist)) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
-+        if (v_adj_dist > self->private_impl.f_dict_seen) {
-+          status = wuffs_base__make_status(wuffs_lzma__error__bad_distance);
-+          goto exit;
-+        }
-+        v_wb_index = ((uint64_t)(((uint64_t)(self->private_impl.f_dict_workbuf_index)) - ((uint64_t)(v_adj_dist))));
-+        while (v_wb_index >= 9223372036854775808u) {
-+          v_wb_index += ((uint64_t)(self->private_impl.f_dict_size));
-+        }
-+        if (v_wb_index >= ((uint64_t)(a_workbuf.len))) {
-+          status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
-+          goto exit;
-+        }
-+        if (v_len < v_adj_dist) {
-+          wuffs_private_impl__io_writer__limited_copy_u32_from_slice(
-+              &iop_a_dst, io2_a_dst,(v_len + 1u), wuffs_base__slice_u8__subslice_i(a_workbuf, v_wb_index));
-+          if ( ! (iop_a_dst > io1_a_dst)) {
-+            status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
-+            goto exit;
-+          }
-+          v_match_byte = ((uint32_t)(iop_a_dst[-1]));
-+          iop_a_dst--;
-+          if ( ! (iop_a_dst > io1_a_dst)) {
-+            status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
-+            goto exit;
-+          }
-+          v_prev_byte = iop_a_dst[-1];
-+          continue;
-+        } else if (v_len == v_adj_dist) {
-+          wuffs_private_impl__io_writer__limited_copy_u32_from_slice(
-+              &iop_a_dst, io2_a_dst,v_len, wuffs_base__slice_u8__subslice_i(a_workbuf, v_wb_index));
-+          wuffs_private_impl__io_writer__limited_copy_u32_from_history(
-+              &iop_a_dst, io0_a_dst, io2_a_dst, 1u, v_dist);
-+          if ( ! (iop_a_dst > io1_a_dst)) {
-+            status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
-+            goto exit;
-+          }
-+          v_match_byte = ((uint32_t)(iop_a_dst[-1]));
-+          iop_a_dst--;
-+          if ( ! (iop_a_dst > io1_a_dst)) {
-+            status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
-+            goto exit;
-+          }
-+          v_prev_byte = iop_a_dst[-1];
-+          continue;
-+        }
-+        wuffs_private_impl__io_writer__limited_copy_u32_from_slice(
-+            &iop_a_dst, io2_a_dst,v_adj_dist, wuffs_base__slice_u8__subslice_i(a_workbuf, v_wb_index));
-+        v_len -= v_adj_dist;
-+        if ((((uint64_t)(v_len)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)(v_dist)) > ((uint64_t)(iop_a_dst - io0_a_dst)))) {
-+          status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
-+          goto exit;
-+        }
-+      }
-+      v_match_cusp = wuffs_private_impl__io_writer__limited_copy_u32_from_history_fast_return_cusp(
-+          &iop_a_dst, io0_a_dst, io2_a_dst, v_len, v_dist);
-+      v_match_byte = (v_match_cusp >> 8u);
-+      v_prev_byte = ((uint8_t)(v_match_cusp));
-+    }
-+    label__outer__break:;
-+    self->private_impl.f_stashed_bytes[0u] = v_prev_byte;
-+    self->private_impl.f_stashed_bytes[1u] = ((uint8_t)(v_match_byte));
-+    self->private_impl.f_stashed_bits = v_bits;
-+    self->private_impl.f_stashed_range = v_range;
-+    self->private_impl.f_stashed_state = v_state;
-+    self->private_impl.f_stashed_rep0 = v_rep0;
-+    self->private_impl.f_stashed_rep1 = v_rep1;
-+    self->private_impl.f_stashed_rep2 = v_rep2;
-+    self->private_impl.f_stashed_rep3 = v_rep3;
-+    self->private_impl.f_stashed_pos = v_pos;
-+    self->private_impl.f_stashed_pos_end = v_pos_end;
-+
-+    ok:
-+    self->private_impl.p_decode_bitstream_slow = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_bitstream_slow = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_bitstream_slow.v_bits = v_bits;
-+  self->private_data.s_decode_bitstream_slow.v_range = v_range;
-+  self->private_data.s_decode_bitstream_slow.v_state = v_state;
-+  self->private_data.s_decode_bitstream_slow.v_rep0 = v_rep0;
-+  self->private_data.s_decode_bitstream_slow.v_rep1 = v_rep1;
-+  self->private_data.s_decode_bitstream_slow.v_rep2 = v_rep2;
-+  self->private_data.s_decode_bitstream_slow.v_rep3 = v_rep3;
-+  self->private_data.s_decode_bitstream_slow.v_rep = v_rep;
-+  self->private_data.s_decode_bitstream_slow.v_pos = v_pos;
-+  self->private_data.s_decode_bitstream_slow.v_pos_end = v_pos_end;
-+  self->private_data.s_decode_bitstream_slow.v_lc = v_lc;
-+  self->private_data.s_decode_bitstream_slow.v_lp_mask = v_lp_mask;
-+  self->private_data.s_decode_bitstream_slow.v_pb_mask = v_pb_mask;
-+  self->private_data.s_decode_bitstream_slow.v_tree_node = v_tree_node;
-+  self->private_data.s_decode_bitstream_slow.v_prev_byte = v_prev_byte;
-+  self->private_data.s_decode_bitstream_slow.v_match_byte = v_match_byte;
-+  self->private_data.s_decode_bitstream_slow.v_len_state = v_len_state;
-+  self->private_data.s_decode_bitstream_slow.v_slot = v_slot;
-+  self->private_data.s_decode_bitstream_slow.v_len = v_len;
-+  self->private_data.s_decode_bitstream_slow.v_lanl_offset = v_lanl_offset;
-+  self->private_data.s_decode_bitstream_slow.v_num_extra_bits = v_num_extra_bits;
-+  self->private_data.s_decode_bitstream_slow.v_dist_extra_bits = v_dist_extra_bits;
-+  self->private_data.s_decode_bitstream_slow.v_i = v_i;
-+  self->private_data.s_decode_bitstream_slow.v_index_lit = v_index_lit;
-+  self->private_data.s_decode_bitstream_slow.v_index_len = v_index_len;
-+  self->private_data.s_decode_bitstream_slow.v_index_small_dist_base = v_index_small_dist_base;
-+  self->private_data.s_decode_bitstream_slow.v_index_small_dist_extra = v_index_small_dist_extra;
-+  self->private_data.s_decode_bitstream_slow.v_index_large_dist = v_index_large_dist;
-+  self->private_data.s_decode_bitstream_slow.v_dist = v_dist;
-+
-+  goto exit;
-+  exit:
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+  }
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func lzma.decoder.add_history
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_lzma__decoder__add_history(
-+    wuffs_lzma__decoder* self,
-+    wuffs_base__slice_u8 a_hist,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  uint64_t v_dict_workbuf_index = 0;
-+  uint64_t v_dict_size = 0;
-+  uint64_t v_hist_length = 0;
-+  wuffs_base__slice_u8 v_s = {0};
-+  uint64_t v_n_copied = 0;
-+  uint64_t v_n = 0;
-+
-+  v_dict_workbuf_index = ((uint64_t)(self->private_impl.f_dict_workbuf_index));
-+  v_dict_size = ((uint64_t)(self->private_impl.f_dict_size));
-+  if (((uint64_t)(a_hist.len)) == 0u) {
-+    return wuffs_base__make_status(NULL);
-+  }
-+  if (((uint64_t)(a_workbuf.len)) < (v_dict_size + 273u)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
-+  }
-+  v_hist_length = ((uint64_t)(a_hist.len));
-+  if (v_hist_length > 4294967295u) {
-+    self->private_impl.f_dict_seen = 4294967295u;
-+  } else {
-+    wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dict_seen, ((uint32_t)(v_hist_length)));
-+  }
-+  v_s = a_hist;
-+  if (((uint64_t)(v_s.len)) >= v_dict_size) {
-+    v_s = wuffs_private_impl__slice_u8__suffix(v_s, v_dict_size);
-+    wuffs_private_impl__slice_u8__copy_from_slice(a_workbuf, v_s);
-+    self->private_impl.f_dict_workbuf_index = 0u;
-+  } else if (v_dict_workbuf_index > v_dict_size) {
-+    return wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
-+  } else {
-+    v_n_copied = wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__slice_u8__subslice_ij(a_workbuf, v_dict_workbuf_index, v_dict_size), v_s);
-+    if (v_n_copied < ((uint64_t)(v_s.len))) {
-+      v_n = wuffs_private_impl__slice_u8__copy_from_slice(a_workbuf, wuffs_base__slice_u8__subslice_i(v_s, v_n_copied));
-+      self->private_impl.f_dict_workbuf_index = ((uint32_t)(v_n));
-+    } else {
-+      v_n = ((uint64_t)(v_dict_workbuf_index + v_n_copied));
-+      if (v_n < v_dict_size) {
-+        self->private_impl.f_dict_workbuf_index = ((uint32_t)(v_n));
-+      } else {
-+        self->private_impl.f_dict_workbuf_index = 0u;
-+      }
-+    }
-+  }
-+  if ((273u > v_dict_size) || (v_dict_size > ((uint64_t)(a_workbuf.len)))) {
-+    return wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
-+  }
-+  wuffs_private_impl__slice_u8__copy_from_slice(wuffs_base__slice_u8__subslice_i(a_workbuf, v_dict_size), wuffs_base__slice_u8__subslice_j(a_workbuf, 273u));
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+// -------- func lzma.decoder.get_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_lzma__decoder__get_quirk(
-+    const wuffs_lzma__decoder* self,
-+    uint32_t a_key) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  if (a_key == 1348001792u) {
-+    if (self->private_impl.f_allow_non_zero_initial_byte) {
-+      return 1u;
-+    }
-+  } else if (a_key == 1348001793u) {
-+    return ((uint64_t)(self->private_impl.f_format_extension));
-+  }
-+  return 0u;
-+}
-+
-+// -------- func lzma.decoder.set_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_lzma__decoder__set_quirk(
-+    wuffs_lzma__decoder* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+
-+  uint32_t v_v = 0;
-+  uint32_t v_n = 0;
-+
-+  if (a_key == 1348001792u) {
-+    self->private_impl.f_allow_non_zero_initial_byte = (a_value > 0u);
-+  } else if (a_key == 1348001793u) {
-+    if (a_value == 0u) {
-+      self->private_impl.f_format_extension = 0u;
-+      return wuffs_base__make_status(NULL);
-+    } else if ((a_value & 255u) == 1u) {
-+      if ((a_value >> 8u) <= 255u) {
-+        self->private_impl.f_format_extension = ((uint32_t)(a_value));
-+        v_v = (self->private_impl.f_format_extension >> 8u);
-+        v_n = (((uint32_t)(1u)) << (v_v & 31u));
-+        wuffs_private_impl__u32__sat_sub_indirect(&v_n, ((v_n >> 4u) * ((v_v >> 5u) & 7u)));
-+        if ((v_n < 4096u) || (536870912u < v_n)) {
-+          return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+        }
-+        self->private_impl.f_dict_size = v_n;
-+        return wuffs_base__make_status(NULL);
-+      }
-+    } else if ((a_value & 255u) == 2u) {
-+      if ((a_value >> 8u) <= 40u) {
-+        self->private_impl.f_format_extension = ((uint32_t)(a_value));
-+        v_v = (self->private_impl.f_format_extension >> 8u);
-+        if (v_v < 40u) {
-+          self->private_impl.f_dict_size = ((2u | (v_v & 1u)) << ((v_v >> 1u) + 11u));
-+        } else {
-+          self->private_impl.f_dict_size = 4294967295u;
-+        }
-+        return wuffs_base__make_status(NULL);
-+      }
-+    }
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+}
-+
-+// -------- func lzma.decoder.dst_history_retain_length
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
-+wuffs_lzma__decoder__dst_history_retain_length(
-+    const wuffs_lzma__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__make_optional_u63(false, 0u);
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__make_optional_u63(false, 0u);
-+  }
-+
-+  return wuffs_base__utility__make_optional_u63(true, 0u);
-+}
-+
-+// -------- func lzma.decoder.workbuf_len
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_lzma__decoder__workbuf_len(
-+    const wuffs_lzma__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+
-+  uint64_t v_m = 0;
-+
-+  if (self->private_impl.f_dict_size == 0u) {
-+    return wuffs_base__utility__make_range_ii_u64(0u, 0u);
-+  }
-+  v_m = (((uint64_t)(self->private_impl.f_dict_size)) + 273u);
-+  return wuffs_base__utility__make_range_ii_u64(v_m, v_m);
-+}
-+
-+// -------- func lzma.decoder.transform_io
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_lzma__decoder__transform_io(
-+    wuffs_lzma__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_dst || !a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 1)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint64_t v_mark = 0;
-+  wuffs_base__status v_dti_status = wuffs_base__make_status(NULL);
-+  wuffs_base__status v_ah_status = wuffs_base__make_status(NULL);
-+
-+  uint8_t* iop_a_dst = NULL;
-+  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-+    }
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_transform_io;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      v_mark = ((uint64_t)(iop_a_dst - io0_a_dst));
-+      {
-+        if (a_dst) {
-+          a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+        }
-+        wuffs_base__status t_0 = wuffs_lzma__decoder__do_transform_io(self, a_dst, a_src, a_workbuf);
-+        v_dti_status = t_0;
-+        if (a_dst) {
-+          iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
-+        }
-+      }
-+      if ( ! wuffs_base__status__is_suspension(&v_dti_status)) {
-+        status = v_dti_status;
-+        if (wuffs_base__status__is_error(&status)) {
-+          goto exit;
-+        } else if (wuffs_base__status__is_suspension(&status)) {
-+          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+          goto exit;
-+        }
-+        goto ok;
-+      } else if ((v_dti_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_lzma__error__truncated_input);
-+        goto exit;
-+      }
-+      v_ah_status = wuffs_lzma__decoder__add_history(self, wuffs_private_impl__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst), a_workbuf);
-+      if (wuffs_base__status__is_error(&v_ah_status)) {
-+        status = v_ah_status;
-+        goto exit;
-+      }
-+      status = v_dti_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+
-+    ok:
-+    self->private_impl.p_transform_io = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+  }
-+
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func lzma.decoder.do_transform_io
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_lzma__decoder__do_transform_io(
-+    wuffs_lzma__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_header_byte = 0;
-+  uint8_t v_c8 = 0;
-+  uint32_t v_c32 = 0;
-+  uint8_t v_prop_byte = 0;
-+  uint32_t v_lc = 0;
-+  uint32_t v_lp = 0;
-+  uint32_t v_pb = 0;
-+  uint32_t v_length = 0;
-+  uint32_t v_n_copied = 0;
-+  uint64_t v_smark = 0;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  uint8_t* iop_a_dst = NULL;
-+  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-+    }
-+  }
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_do_transform_io;
-+  if (coro_susp_point) {
-+    v_header_byte = self->private_data.s_do_transform_io.v_header_byte;
-+    v_length = self->private_data.s_do_transform_io.v_length;
-+  }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    self->private_impl.f_lzma2_need_prob_reset = true;
-+    self->private_impl.f_lzma2_need_properties = true;
-+    self->private_impl.f_lzma2_need_dict_reset = true;
-+    while (true) {
-+      if ((self->private_impl.f_format_extension & 255u) == 0u) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_0 = *iop_a_src++;
-+          v_prop_byte = t_0;
-+        }
-+        if (v_prop_byte >= 225u) {
-+          status = wuffs_base__make_status(wuffs_lzma__error__bad_header);
-+          goto exit;
-+        }
-+        v_lc = ((uint32_t)(((uint8_t)(v_prop_byte % 9u))));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        v_prop_byte /= 9u;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+        v_lp = ((uint32_t)(((uint8_t)(v_prop_byte % 5u))));
-+        v_pb = ((uint32_t)(((uint8_t)(v_prop_byte / 5u))));
-+        if ((v_lc + v_lp) > 4u) {
-+          status = wuffs_base__make_status(wuffs_lzma__error__unsupported_properties);
-+          goto exit;
-+        }
-+        self->private_impl.f_lc = wuffs_base__u32__min(v_lc, 4u);
-+        self->private_impl.f_lp = v_lp;
-+        self->private_impl.f_pb = v_pb;
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+          uint32_t t_1;
-+          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+            t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+            iop_a_src += 4;
-+          } else {
-+            self->private_data.s_do_transform_io.scratch = 0;
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+            while (true) {
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+              uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
-+              *scratch <<= 8;
-+              *scratch >>= 8;
-+              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
-+              if (num_bits_1 == 24) {
-+                t_1 = ((uint32_t)(*scratch));
-+                break;
-+              }
-+              num_bits_1 += 8u;
-+              *scratch |= ((uint64_t)(num_bits_1)) << 56;
-+            }
-+          }
-+          v_c32 = t_1;
-+        }
-+        self->private_impl.f_dict_size = wuffs_base__u32__max(v_c32, 4096u);
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+          uint64_t t_2;
-+          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
-+            t_2 = wuffs_base__peek_u64le__no_bounds_check(iop_a_src);
-+            iop_a_src += 8;
-+          } else {
-+            self->private_data.s_do_transform_io.scratch = 0;
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+            while (true) {
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+              uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
-+              *scratch <<= 8;
-+              *scratch >>= 8;
-+              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
-+              if (num_bits_2 == 56) {
-+                t_2 = ((uint64_t)(*scratch));
-+                break;
-+              }
-+              num_bits_2 += 8u;
-+              *scratch |= ((uint64_t)(num_bits_2)) << 56;
-+            }
-+          }
-+          self->private_impl.f_decoded_length = t_2;
-+        }
-+        if ((self->private_impl.f_decoded_length >= 9223372036854775808u) && (self->private_impl.f_decoded_length != 18446744073709551615u)) {
-+          status = wuffs_base__make_status(wuffs_lzma__error__unsupported_decoded_length);
-+          goto exit;
-+        }
-+        wuffs_lzma__decoder__initialize_probs(self);
-+      } else if ((self->private_impl.f_format_extension & 255u) == 1u) {
-+        self->private_impl.f_lc = 3u;
-+        self->private_impl.f_lp = 0u;
-+        self->private_impl.f_pb = 2u;
-+        self->private_impl.f_decoded_length = 18446744073709551615u;
-+        wuffs_lzma__decoder__initialize_probs(self);
-+      } else {
-+        while (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
-+        }
-+        if (wuffs_base__peek_u8be__no_bounds_check(iop_a_src) == 0u) {
-+          iop_a_src += 1u;
-+          break;
-+        }
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_3 = *iop_a_src++;
-+          v_header_byte = t_3;
-+        }
-+        if (v_header_byte < 128u) {
-+          if (v_header_byte < 2u) {
-+            self->private_impl.f_lzma2_need_prob_reset = true;
-+            self->private_impl.f_lzma2_need_properties = true;
-+            self->private_impl.f_lzma2_need_dict_reset = false;
-+            wuffs_lzma__decoder__initialize_dict(self);
-+          } else if ((v_header_byte > 2u) || self->private_impl.f_lzma2_need_dict_reset) {
-+            status = wuffs_base__make_status(wuffs_lzma__error__bad_lzma2_header);
-+            goto exit;
-+          }
-+          self->private_impl.f_prev_lzma2_chunk_was_uncompressed = true;
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+            uint32_t t_4;
-+            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+              t_4 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
-+              iop_a_src += 2;
-+            } else {
-+              self->private_data.s_do_transform_io.scratch = 0;
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+              while (true) {
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+                uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFFu));
-+                *scratch >>= 8;
-+                *scratch <<= 8;
-+                *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4);
-+                if (num_bits_4 == 8) {
-+                  t_4 = ((uint32_t)(*scratch >> 48));
-+                  break;
-+                }
-+                num_bits_4 += 8u;
-+                *scratch |= ((uint64_t)(num_bits_4));
-+              }
-+            }
-+            v_c32 = t_4;
-+          }
-+          v_length = (1u + v_c32);
-+          while (true) {
-+            v_n_copied = wuffs_private_impl__io_writer__limited_copy_u32_from_reader(
-+                &iop_a_dst, io2_a_dst,v_length, &iop_a_src, io2_a_src);
-+            wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_stashed_pos, ((uint64_t)(v_n_copied)));
-+            if (v_length <= v_n_copied) {
-+              break;
-+            }
-+            v_length -= v_n_copied;
-+            if (((uint64_t)(io2_a_dst - iop_a_dst)) == 0u) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
-+            } else {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11);
-+            }
-+          }
-+          continue;
-+        }
-+        self->private_impl.f_decoded_length = ((uint64_t)(v_header_byte));
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
-+          uint32_t t_5;
-+          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+            t_5 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
-+            iop_a_src += 2;
-+          } else {
-+            self->private_data.s_do_transform_io.scratch = 0;
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
-+            while (true) {
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+              uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFFu));
-+              *scratch >>= 8;
-+              *scratch <<= 8;
-+              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5);
-+              if (num_bits_5 == 8) {
-+                t_5 = ((uint32_t)(*scratch >> 48));
-+                break;
-+              }
-+              num_bits_5 += 8u;
-+              *scratch |= ((uint64_t)(num_bits_5));
-+            }
-+          }
-+          v_c32 = t_5;
-+        }
-+        self->private_impl.f_decoded_length = (((self->private_impl.f_decoded_length & 31u) << 16u) + ((uint64_t)((1u + v_c32))));
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
-+          uint32_t t_6;
-+          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+            t_6 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
-+            iop_a_src += 2;
-+          } else {
-+            self->private_data.s_do_transform_io.scratch = 0;
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
-+            while (true) {
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+              uint32_t num_bits_6 = ((uint32_t)(*scratch & 0xFFu));
-+              *scratch >>= 8;
-+              *scratch <<= 8;
-+              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_6);
-+              if (num_bits_6 == 8) {
-+                t_6 = ((uint32_t)(*scratch >> 48));
-+                break;
-+              }
-+              num_bits_6 += 8u;
-+              *scratch |= ((uint64_t)(num_bits_6));
-+            }
-+          }
-+          v_c32 = t_6;
-+        }
-+        self->private_impl.f_lzma2_encoded_length_want = ((uint64_t)((1u + v_c32)));
-+        if (v_header_byte >= 160u) {
-+          wuffs_lzma__decoder__initialize_probs(self);
-+          self->private_impl.f_lzma2_need_prob_reset = false;
-+        }
-+        if (v_header_byte >= 192u) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint8_t t_7 = *iop_a_src++;
-+            v_prop_byte = t_7;
-+          }
-+          if (v_prop_byte >= 225u) {
-+            status = wuffs_base__make_status(wuffs_lzma__error__bad_lzma2_header);
-+            goto exit;
-+          }
-+          v_lc = ((uint32_t)(((uint8_t)(v_prop_byte % 9u))));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+          v_prop_byte /= 9u;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+          v_lp = ((uint32_t)(((uint8_t)(v_prop_byte % 5u))));
-+          v_pb = ((uint32_t)(((uint8_t)(v_prop_byte / 5u))));
-+          if ((v_lc + v_lp) > 4u) {
-+            status = wuffs_base__make_status(wuffs_lzma__error__bad_lzma2_header);
-+            goto exit;
-+          }
-+          self->private_impl.f_lc = wuffs_base__u32__min(v_lc, 4u);
-+          self->private_impl.f_lp = v_lp;
-+          self->private_impl.f_pb = v_pb;
-+          self->private_impl.f_lzma2_need_properties = false;
-+        }
-+        if (v_header_byte >= 224u) {
-+          self->private_impl.f_lzma2_need_dict_reset = false;
-+          wuffs_lzma__decoder__initialize_dict(self);
-+        } else if (self->private_impl.f_prev_lzma2_chunk_was_uncompressed) {
-+          if (a_dst) {
-+            a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+          }
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(17);
-+          status = wuffs_lzma__decoder__update_stashed_bytes(self, a_dst, a_workbuf);
-+          if (a_dst) {
-+            iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
-+          }
-+          if (status.repr) {
-+            goto suspend;
-+          }
-+        }
-+        self->private_impl.f_prev_lzma2_chunk_was_uncompressed = false;
-+        if (self->private_impl.f_lzma2_need_prob_reset || self->private_impl.f_lzma2_need_properties || self->private_impl.f_lzma2_need_dict_reset) {
-+          status = wuffs_base__make_status(wuffs_lzma__error__bad_lzma2_header);
-+          goto exit;
-+        }
-+      }
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(18);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_8 = *iop_a_src++;
-+        v_c8 = t_8;
-+      }
-+      if ((v_c8 != 0u) &&  ! self->private_impl.f_allow_non_zero_initial_byte) {
-+        status = wuffs_base__make_status(wuffs_lzma__error__bad_code);
-+        goto exit;
-+      }
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(19);
-+        uint32_t t_9;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+          t_9 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+          iop_a_src += 4;
-+        } else {
-+          self->private_data.s_do_transform_io.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(20);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+            uint32_t num_bits_9 = ((uint32_t)(*scratch & 0xFFu));
-+            *scratch >>= 8;
-+            *scratch <<= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_9);
-+            if (num_bits_9 == 24) {
-+              t_9 = ((uint32_t)(*scratch >> 32));
-+              break;
-+            }
-+            num_bits_9 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_9));
-+          }
-+        }
-+        self->private_impl.f_stashed_bits = t_9;
-+      }
-+      if (self->private_impl.f_stashed_bits == 4294967295u) {
-+        status = wuffs_base__make_status(wuffs_lzma__error__bad_code);
-+        goto exit;
-+      }
-+      self->private_impl.f_stashed_range = 4294967295u;
-+      self->private_impl.f_stashed_pos_end = wuffs_base__u64__sat_add(self->private_impl.f_stashed_pos, self->private_impl.f_decoded_length);
-+      if ((self->private_impl.f_stashed_pos_end == 18446744073709551615u) && (self->private_impl.f_decoded_length != 18446744073709551615u)) {
-+        status = wuffs_base__make_status(wuffs_lzma__error__unsupported_decoded_length);
-+        goto exit;
-+      }
-+      self->private_impl.f_lzma2_encoded_length_have = 5u;
-+      while (((uint64_t)(a_workbuf.len)) < (((uint64_t)(self->private_impl.f_dict_size)) + 273u)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_workbuf);
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(21);
-+      }
-+      while (true) {
-+        v_smark = ((uint64_t)(iop_a_src - io0_a_src));
-+        {
-+          if (a_dst) {
-+            a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+          }
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          wuffs_base__status t_10 = wuffs_lzma__decoder__decode_bitstream(self, a_dst, a_src, a_workbuf);
-+          v_status = t_10;
-+          if (a_dst) {
-+            iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
-+          }
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+        }
-+        wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_lzma2_encoded_length_have, wuffs_private_impl__io__count_since(v_smark, ((uint64_t)(iop_a_src - io0_a_src))));
-+        if (wuffs_base__status__is_ok(&v_status)) {
-+          break;
-+        }
-+        status = v_status;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(22);
-+      }
-+      if (self->private_impl.f_decoded_length == 18446744073709551615u) {
-+        if (self->private_impl.f_stashed_bits != 0u) {
-+          status = wuffs_base__make_status(wuffs_lzma__error__bad_bitstream_trailer);
-+          goto exit;
-+        }
-+      } else if (self->private_impl.f_stashed_pos != self->private_impl.f_stashed_pos_end) {
-+        status = wuffs_base__make_status(wuffs_lzma__error__bad_decoded_length);
-+        goto exit;
-+      } else if (self->private_impl.f_stashed_bits != 0u) {
-+        if (a_src) {
-+          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+        }
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(23);
-+        status = wuffs_lzma__decoder__decode_optional_end_of_stream(self, a_src, a_workbuf);
-+        if (a_src) {
-+          iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+        }
-+        if (status.repr) {
-+          goto suspend;
-+        }
-+        if (self->private_impl.f_stashed_bits != 0u) {
-+          status = wuffs_base__make_status(wuffs_lzma__error__bad_bitstream_trailer);
-+          goto exit;
-+        }
-+      }
-+      if ((self->private_impl.f_format_extension & 255u) < 2u) {
-+        break;
-+      } else if (self->private_impl.f_lzma2_encoded_length_have != self->private_impl.f_lzma2_encoded_length_want) {
-+        status = wuffs_base__make_status(wuffs_lzma__error__bad_lzma2_header);
-+        goto exit;
-+      }
-+    }
-+
-+    ok:
-+    self->private_impl.p_do_transform_io = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_do_transform_io.v_header_byte = v_header_byte;
-+  self->private_data.s_do_transform_io.v_length = v_length;
-+
-+  goto exit;
-+  exit:
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+  }
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func lzma.decoder.decode_bitstream
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_lzma__decoder__decode_bitstream(
-+    wuffs_lzma__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_bitstream;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    self->private_impl.f_end_of_chunk = false;
-+    while (true) {
-+      v_status = wuffs_lzma__decoder__decode_bitstream_fast(self, a_dst, a_src, a_workbuf);
-+      if (wuffs_base__status__is_error(&v_status)) {
-+        status = v_status;
-+        goto exit;
-+      }
-+      if (self->private_impl.f_end_of_chunk) {
-+        break;
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      status = wuffs_lzma__decoder__decode_bitstream_slow(self, a_dst, a_src, a_workbuf);
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+      if (self->private_impl.f_end_of_chunk) {
-+        break;
-+      }
-+    }
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_decode_bitstream = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_bitstream = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  return status;
-+}
-+
-+// -------- func lzma.decoder.update_stashed_bytes
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_lzma__decoder__update_stashed_bytes(
-+    wuffs_lzma__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint32_t v_dist = 0;
-+  uint32_t v_which = 0;
-+  uint32_t v_adj_dist = 0;
-+  uint64_t v_wb_index = 0;
-+
-+  uint8_t* iop_a_dst = NULL;
-+  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-+    }
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_update_stashed_bytes;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+      status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+    v_dist = 1u;
-+    v_which = 0u;
-+    while (v_which < 2u) {
-+      if (((uint64_t)(v_dist)) <= ((uint64_t)(iop_a_dst - io0_a_dst))) {
-+        wuffs_private_impl__io_writer__limited_copy_u32_from_history(
-+            &iop_a_dst, io0_a_dst, io2_a_dst, 1u, v_dist);
-+        if ( ! (iop_a_dst > io1_a_dst)) {
-+          status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
-+          goto exit;
-+        }
-+        self->private_impl.f_stashed_bytes[v_which] = iop_a_dst[-1];
-+        iop_a_dst--;
-+      } else {
-+        v_adj_dist = ((uint32_t)((((uint64_t)(v_dist)) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
-+        v_wb_index = ((uint64_t)(((uint64_t)(self->private_impl.f_dict_workbuf_index)) - ((uint64_t)(v_adj_dist))));
-+        while (v_wb_index >= 9223372036854775808u) {
-+          v_wb_index += ((uint64_t)(self->private_impl.f_dict_size));
-+        }
-+        if (v_wb_index >= ((uint64_t)(a_workbuf.len))) {
-+          status = wuffs_base__make_status(wuffs_lzma__error__internal_error_inconsistent_dictionary_state);
-+          goto exit;
-+        }
-+        self->private_impl.f_stashed_bytes[v_which] = a_workbuf.ptr[v_wb_index];
-+      }
-+      v_dist = (1u + self->private_impl.f_stashed_rep0);
-+      v_which += 1u;
-+    }
-+
-+    ok:
-+    self->private_impl.p_update_stashed_bytes = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_update_stashed_bytes = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func lzma.decoder.decode_optional_end_of_stream
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_lzma__decoder__decode_optional_end_of_stream(
-+    wuffs_lzma__decoder* self,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__io_buffer u_w = wuffs_base__empty_io_buffer();
-+  wuffs_base__io_buffer* v_w = &u_w;
-+  uint8_t* iop_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io0_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io1_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io2_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_optional_end_of_stream;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    self->private_impl.f_stashed_pos_end = 18446744073709551615u;
-+    while (true) {
-+      {
-+        wuffs_base__io_buffer* o_0_v_w = v_w;
-+        uint8_t* o_0_iop_v_w = iop_v_w;
-+        uint8_t* o_0_io0_v_w = io0_v_w;
-+        uint8_t* o_0_io1_v_w = io1_v_w;
-+        uint8_t* o_0_io2_v_w = io2_v_w;
-+        v_w = wuffs_private_impl__io_writer__set(
-+            &u_w,
-+            &iop_v_w,
-+            &io0_v_w,
-+            &io1_v_w,
-+            &io2_v_w,
-+            wuffs_base__utility__empty_slice_u8(),
-+            0u);
-+        {
-+          wuffs_base__status t_0 = wuffs_lzma__decoder__decode_bitstream_slow(self, v_w, a_src, a_workbuf);
-+          v_status = t_0;
-+        }
-+        v_w = o_0_v_w;
-+        iop_v_w = o_0_iop_v_w;
-+        io0_v_w = o_0_io0_v_w;
-+        io1_v_w = o_0_io1_v_w;
-+        io2_v_w = o_0_io2_v_w;
-+      }
-+      if (wuffs_base__status__is_ok(&v_status)) {
-+        break;
-+      } else if (v_status.repr == wuffs_base__suspension__short_write) {
-+        status = wuffs_base__make_status(wuffs_lzma__error__bad_bitstream_trailer);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+    self->private_impl.f_stashed_pos_end = self->private_impl.f_stashed_pos;
-+
-+    ok:
-+    self->private_impl.p_decode_optional_end_of_stream = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_optional_end_of_stream = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  return status;
-+}
-+
-+// -------- func lzma.decoder.initialize_dict
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_lzma__decoder__initialize_dict(
-+    wuffs_lzma__decoder* self) {
-+  self->private_impl.f_dict_workbuf_index = 0u;
-+  self->private_impl.f_dict_seen = 0u;
-+  self->private_impl.f_stashed_bytes[0u] = 0u;
-+  self->private_impl.f_stashed_bytes[1u] = 0u;
-+  self->private_impl.f_stashed_pos = 0u;
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+// -------- func lzma.decoder.initialize_probs
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_lzma__decoder__initialize_probs(
-+    wuffs_lzma__decoder* self) {
-+  uint32_t v_i = 0;
-+  uint32_t v_j = 0;
-+
-+  v_i = 0u;
-+  while (v_i < 192u) {
-+    self->private_data.f_probs_ao00[v_i] = 1024u;
-+    v_i += 1u;
-+  }
-+  v_i = 0u;
-+  while (v_i < 12u) {
-+    self->private_data.f_probs_ao20[v_i] = 1024u;
-+    v_i += 1u;
-+  }
-+  v_i = 0u;
-+  while (v_i < 12u) {
-+    self->private_data.f_probs_ao40[v_i] = 1024u;
-+    v_i += 1u;
-+  }
-+  v_i = 0u;
-+  while (v_i < 192u) {
-+    self->private_data.f_probs_ao41[v_i] = 1024u;
-+    v_i += 1u;
-+  }
-+  v_i = 0u;
-+  while (v_i < 12u) {
-+    self->private_data.f_probs_ao60[v_i] = 1024u;
-+    v_i += 1u;
-+  }
-+  v_i = 0u;
-+  while (v_i < 12u) {
-+    self->private_data.f_probs_ao63[v_i] = 1024u;
-+    v_i += 1u;
-+  }
-+  v_i = 0u;
-+  while (v_i < 16u) {
-+    v_j = 0u;
-+    while (v_j < 8u) {
-+      self->private_data.f_probs_match_len_low[v_i][v_j] = 1024u;
-+      v_j += 1u;
-+    }
-+    v_i += 1u;
-+  }
-+  v_i = 0u;
-+  while (v_i < 16u) {
-+    v_j = 0u;
-+    while (v_j < 8u) {
-+      self->private_data.f_probs_match_len_mid[v_i][v_j] = 1024u;
-+      v_j += 1u;
-+    }
-+    v_i += 1u;
-+  }
-+  v_i = 0u;
-+  while (v_i < 256u) {
-+    self->private_data.f_probs_match_len_high[0u][v_i] = 1024u;
-+    v_i += 1u;
-+  }
-+  v_i = 0u;
-+  while (v_i < 16u) {
-+    v_j = 0u;
-+    while (v_j < 8u) {
-+      self->private_data.f_probs_longrep_len_low[v_i][v_j] = 1024u;
-+      v_j += 1u;
-+    }
-+    v_i += 1u;
-+  }
-+  v_i = 0u;
-+  while (v_i < 16u) {
-+    v_j = 0u;
-+    while (v_j < 8u) {
-+      self->private_data.f_probs_longrep_len_mid[v_i][v_j] = 1024u;
-+      v_j += 1u;
-+    }
-+    v_i += 1u;
-+  }
-+  v_i = 0u;
-+  while (v_i < 256u) {
-+    self->private_data.f_probs_longrep_len_high[0u][v_i] = 1024u;
-+    v_i += 1u;
-+  }
-+  v_i = 0u;
-+  while (v_i < 4u) {
-+    v_j = 0u;
-+    while (v_j < 64u) {
-+      self->private_data.f_probs_slot[v_i][v_j] = 1024u;
-+      v_j += 1u;
-+    }
-+    v_i += 1u;
-+  }
-+  v_i = 0u;
-+  while (v_i < 128u) {
-+    self->private_data.f_probs_small_dist[v_i] = 1024u;
-+    v_i += 1u;
-+  }
-+  v_i = 0u;
-+  while (v_i < 16u) {
-+    self->private_data.f_probs_large_dist[v_i] = 1024u;
-+    v_i += 1u;
-+  }
-+  v_i = 0u;
-+  while (v_i < 16u) {
-+    v_j = 0u;
-+    while (v_j < 768u) {
-+      self->private_data.f_probs_lit[v_i][v_j] = 1024u;
-+      v_j += 1u;
-+    }
-+    v_i += 1u;
-+  }
-+  self->private_impl.f_stashed_state = 0u;
-+  self->private_impl.f_stashed_rep0 = 0u;
-+  self->private_impl.f_stashed_rep1 = 0u;
-+  self->private_impl.f_stashed_rep2 = 0u;
-+  self->private_impl.f_stashed_rep3 = 0u;
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZMA)
-+
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZIP)
-+
-+// ---------------- Status Codes Implementations
-+
-+const char wuffs_lzip__error__bad_checksum[] = "#lzip: bad checksum";
-+const char wuffs_lzip__error__bad_footer[] = "#lzip: bad footer";
-+const char wuffs_lzip__error__bad_header[] = "#lzip: bad header";
-+const char wuffs_lzip__error__truncated_input[] = "#lzip: truncated input";
-+
-+// ---------------- Private Consts
-+
-+// ---------------- Private Initializer Prototypes
-+
-+// ---------------- Private Function Prototypes
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_lzip__decoder__do_transform_io(
-+    wuffs_lzip__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf);
-+
-+// ---------------- VTables
-+
-+const wuffs_base__io_transformer__func_ptrs
-+wuffs_lzip__decoder__func_ptrs_for__wuffs_base__io_transformer = {
-+  (wuffs_base__optional_u63(*)(const void*))(&wuffs_lzip__decoder__dst_history_retain_length),
-+  (uint64_t(*)(const void*,
-+      uint32_t))(&wuffs_lzip__decoder__get_quirk),
-+  (wuffs_base__status(*)(void*,
-+      uint32_t,
-+      uint64_t))(&wuffs_lzip__decoder__set_quirk),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__slice_u8))(&wuffs_lzip__decoder__transform_io),
-+  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_lzip__decoder__workbuf_len),
-+};
-+
-+// ---------------- Initializer Implementations
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_lzip__decoder__initialize(
-+    wuffs_lzip__decoder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options){
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (sizeof(*self) != sizeof_star_self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  }
-+  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
-+      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+  }
-+
-+  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
-+    // The whole point of this if-check is to detect an uninitialized *self.
-+    // We disable the warning on GCC. Clang-5.0 does not have this warning.
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+#endif
-+    if (self->private_impl.magic != 0) {
-+      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+    }
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+  } else {
-+    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
-+      memset(self, 0, sizeof(*self));
-+      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-+    } else {
-+      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+    }
-+  }
-+
-+  {
-+    wuffs_base__status z = wuffs_crc32__ieee_hasher__initialize(
-+        &self->private_data.f_crc32, sizeof(self->private_data.f_crc32), WUFFS_VERSION, options);
-+    if (z.repr) {
-+      return z;
-+    }
-+  }
-+  {
-+    wuffs_base__status z = wuffs_lzma__decoder__initialize(
-+        &self->private_data.f_lzma, sizeof(self->private_data.f_lzma), WUFFS_VERSION, options);
-+    if (z.repr) {
-+      return z;
-+    }
-+  }
-+  self->private_impl.magic = WUFFS_BASE__MAGIC;
-+  self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
-+      wuffs_base__io_transformer__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
-+      (const void*)(&wuffs_lzip__decoder__func_ptrs_for__wuffs_base__io_transformer);
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+wuffs_lzip__decoder*
-+wuffs_lzip__decoder__alloc(void) {
-+  wuffs_lzip__decoder* x =
-+      (wuffs_lzip__decoder*)(calloc(1, sizeof(wuffs_lzip__decoder)));
-+  if (!x) {
-+    return NULL;
-+  }
-+  if (wuffs_lzip__decoder__initialize(
-+      x, sizeof(wuffs_lzip__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+    free(x);
-+    return NULL;
-+  }
-+  return x;
-+}
-+
-+size_t
-+sizeof__wuffs_lzip__decoder(void) {
-+  return sizeof(wuffs_lzip__decoder);
-+}
-+
-+// ---------------- Function Implementations
-+
-+// -------- func lzip.decoder.get_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_lzip__decoder__get_quirk(
-+    const wuffs_lzip__decoder* self,
-+    uint32_t a_key) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  if ((a_key == 1u) && self->private_impl.f_ignore_checksum) {
-+    return 1u;
-+  }
-+  return 0u;
-+}
-+
-+// -------- func lzip.decoder.set_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_lzip__decoder__set_quirk(
-+    wuffs_lzip__decoder* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+
-+  if (a_key == 1u) {
-+    self->private_impl.f_ignore_checksum = (a_value > 0u);
-+    return wuffs_base__make_status(NULL);
-+  }
-+  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+}
-+
-+// -------- func lzip.decoder.dst_history_retain_length
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
-+wuffs_lzip__decoder__dst_history_retain_length(
-+    const wuffs_lzip__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__make_optional_u63(false, 0u);
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__make_optional_u63(false, 0u);
-+  }
-+
-+  return wuffs_lzma__decoder__dst_history_retain_length(&self->private_data.f_lzma);
-+}
-+
-+// -------- func lzip.decoder.workbuf_len
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_lzip__decoder__workbuf_len(
-+    const wuffs_lzip__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+
-+  return wuffs_lzma__decoder__workbuf_len(&self->private_data.f_lzma);
-+}
-+
-+// -------- func lzip.decoder.transform_io
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_lzip__decoder__transform_io(
-+    wuffs_lzip__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_dst || !a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 1)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_transform_io;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_lzip__decoder__do_transform_io(self, a_dst, a_src, a_workbuf);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_lzip__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+
-+    ok:
-+    self->private_impl.p_transform_io = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func lzip.decoder.do_transform_io
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_lzip__decoder__do_transform_io(
-+    wuffs_lzip__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_c8 = 0;
-+  uint32_t v_c32 = 0;
-+  uint64_t v_c64 = 0;
-+  uint64_t v_dmark = 0;
-+  uint64_t v_smark = 0;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+  uint32_t v_checksum_want = 0;
-+  uint32_t v_checksum_have = 0;
-+  uint64_t v_size_want = 0;
-+
-+  uint8_t* iop_a_dst = NULL;
-+  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-+    }
-+  }
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_do_transform_io;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        uint64_t t_0;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 5)) {
-+          t_0 = ((uint64_t)(wuffs_base__peek_u40le__no_bounds_check(iop_a_src)));
-+          iop_a_src += 5;
-+        } else {
-+          self->private_data.s_do_transform_io.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+            uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
-+            if (num_bits_0 == 32) {
-+              t_0 = ((uint64_t)(*scratch));
-+              break;
-+            }
-+            num_bits_0 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_0)) << 56;
-+          }
-+        }
-+        v_c64 = t_0;
-+      }
-+      if (v_c64 != 5641951820u) {
-+        status = wuffs_base__make_status(wuffs_lzip__error__bad_header);
-+        goto exit;
-+      }
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_1 = *iop_a_src++;
-+        v_c8 = t_1;
-+      }
-+      v_status = wuffs_lzma__decoder__set_quirk(&self->private_data.f_lzma, 1348001793u, (1u | (((uint64_t)(v_c8)) << 8u)));
-+      if ( ! wuffs_base__status__is_ok(&v_status)) {
-+        if (v_status.repr == wuffs_base__error__bad_argument) {
-+          status = wuffs_base__make_status(wuffs_lzip__error__bad_header);
-+          goto exit;
-+        }
-+        status = v_status;
-+        if (wuffs_base__status__is_error(&status)) {
-+          goto exit;
-+        } else if (wuffs_base__status__is_suspension(&status)) {
-+          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+          goto exit;
-+        }
-+        goto ok;
-+      }
-+      self->private_impl.f_ssize_have = 0u;
-+      self->private_impl.f_dsize_have = 0u;
-+      wuffs_lzma__decoder__set_quirk(&self->private_data.f_lzma, 1348001792u, 1u);
-+      while (true) {
-+        v_dmark = ((uint64_t)(iop_a_dst - io0_a_dst));
-+        v_smark = ((uint64_t)(iop_a_src - io0_a_src));
-+        {
-+          if (a_dst) {
-+            a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+          }
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          wuffs_base__status t_2 = wuffs_lzma__decoder__transform_io(&self->private_data.f_lzma, a_dst, a_src, a_workbuf);
-+          v_status = t_2;
-+          if (a_dst) {
-+            iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
-+          }
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+        }
-+        self->private_impl.f_ssize_have += wuffs_private_impl__io__count_since(v_smark, ((uint64_t)(iop_a_src - io0_a_src)));
-+        self->private_impl.f_dsize_have += wuffs_private_impl__io__count_since(v_dmark, ((uint64_t)(iop_a_dst - io0_a_dst)));
-+        if ( ! self->private_impl.f_ignore_checksum) {
-+          wuffs_crc32__ieee_hasher__update(&self->private_data.f_crc32, wuffs_private_impl__io__since(v_dmark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
-+        }
-+        if (wuffs_base__status__is_ok(&v_status)) {
-+          break;
-+        }
-+        status = v_status;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
-+      }
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+        uint32_t t_3;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+          t_3 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+          iop_a_src += 4;
-+        } else {
-+          self->private_data.s_do_transform_io.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+            uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
-+            if (num_bits_3 == 24) {
-+              t_3 = ((uint32_t)(*scratch));
-+              break;
-+            }
-+            num_bits_3 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_3)) << 56;
-+          }
-+        }
-+        v_checksum_want = t_3;
-+      }
-+      if ( ! self->private_impl.f_ignore_checksum) {
-+        v_checksum_have = wuffs_crc32__ieee_hasher__checksum_u32(&self->private_data.f_crc32);
-+        if (v_checksum_have != v_checksum_want) {
-+          status = wuffs_base__make_status(wuffs_lzip__error__bad_checksum);
-+          goto exit;
-+        }
-+      }
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+        uint64_t t_4;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
-+          t_4 = wuffs_base__peek_u64le__no_bounds_check(iop_a_src);
-+          iop_a_src += 8;
-+        } else {
-+          self->private_data.s_do_transform_io.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+            uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
-+            if (num_bits_4 == 56) {
-+              t_4 = ((uint64_t)(*scratch));
-+              break;
-+            }
-+            num_bits_4 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_4)) << 56;
-+          }
-+        }
-+        v_size_want = t_4;
-+      }
-+      if (self->private_impl.f_dsize_have != v_size_want) {
-+        status = wuffs_base__make_status(wuffs_lzip__error__bad_footer);
-+        goto exit;
-+      }
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+        uint64_t t_5;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
-+          t_5 = wuffs_base__peek_u64le__no_bounds_check(iop_a_src);
-+          iop_a_src += 8;
-+        } else {
-+          self->private_data.s_do_transform_io.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+            uint32_t num_bits_5 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_5;
-+            if (num_bits_5 == 56) {
-+              t_5 = ((uint64_t)(*scratch));
-+              break;
-+            }
-+            num_bits_5 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_5)) << 56;
-+          }
-+        }
-+        v_size_want = t_5;
-+      }
-+      if ((v_size_want < 26u) || (2251799813685248u < v_size_want)) {
-+        status = wuffs_base__make_status(wuffs_lzip__error__bad_footer);
-+        goto exit;
-+      } else if (self->private_impl.f_ssize_have != (v_size_want - 26u)) {
-+        status = wuffs_base__make_status(wuffs_lzip__error__bad_footer);
-+        goto exit;
-+      }
-+      while (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
-+        if (a_src && a_src->meta.closed) {
-+          goto label__outer__break;
-+        }
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11);
-+      }
-+      v_c32 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+      if (v_c32 != 1346984524u) {
-+        break;
-+      }
-+      wuffs_private_impl__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
-+          sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
-+      wuffs_private_impl__ignore_status(wuffs_lzma__decoder__initialize(&self->private_data.f_lzma,
-+          sizeof (wuffs_lzma__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
-+    }
-+    label__outer__break:;
-+
-+    ok:
-+    self->private_impl.p_do_transform_io = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+  }
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZIP)
-+
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW)
-+
-+// ---------------- Status Codes Implementations
-+
-+const char wuffs_lzw__error__bad_code[] = "#lzw: bad code";
-+const char wuffs_lzw__error__truncated_input[] = "#lzw: truncated input";
-+const char wuffs_lzw__error__internal_error_inconsistent_i_o[] = "#lzw: internal error: inconsistent I/O";
-+
-+// ---------------- Private Consts
-+
-+#define WUFFS_LZW__QUIRKS_BASE 1348378624u
-+
-+// ---------------- Private Initializer Prototypes
-+
-+// ---------------- Private Function Prototypes
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_lzw__decoder__read_from(
-+    wuffs_lzw__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_lzw__decoder__write_to(
-+    wuffs_lzw__decoder* self,
-+    wuffs_base__io_buffer* a_dst);
-+
-+// ---------------- VTables
-+
-+const wuffs_base__io_transformer__func_ptrs
-+wuffs_lzw__decoder__func_ptrs_for__wuffs_base__io_transformer = {
-+  (wuffs_base__optional_u63(*)(const void*))(&wuffs_lzw__decoder__dst_history_retain_length),
-+  (uint64_t(*)(const void*,
-+      uint32_t))(&wuffs_lzw__decoder__get_quirk),
-+  (wuffs_base__status(*)(void*,
-+      uint32_t,
-+      uint64_t))(&wuffs_lzw__decoder__set_quirk),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__slice_u8))(&wuffs_lzw__decoder__transform_io),
-+  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_lzw__decoder__workbuf_len),
-+};
-+
-+// ---------------- Initializer Implementations
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_lzw__decoder__initialize(
-+    wuffs_lzw__decoder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options){
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (sizeof(*self) != sizeof_star_self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  }
-+  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
-+      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+  }
-+
-+  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
-+    // The whole point of this if-check is to detect an uninitialized *self.
-+    // We disable the warning on GCC. Clang-5.0 does not have this warning.
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+#endif
-+    if (self->private_impl.magic != 0) {
-+      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+    }
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+  } else {
-+    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
-+      memset(self, 0, sizeof(*self));
-+      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-+    } else {
-+      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+    }
-+  }
-+
-+  self->private_impl.magic = WUFFS_BASE__MAGIC;
-+  self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
-+      wuffs_base__io_transformer__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
-+      (const void*)(&wuffs_lzw__decoder__func_ptrs_for__wuffs_base__io_transformer);
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+wuffs_lzw__decoder*
-+wuffs_lzw__decoder__alloc(void) {
-+  wuffs_lzw__decoder* x =
-+      (wuffs_lzw__decoder*)(calloc(1, sizeof(wuffs_lzw__decoder)));
-+  if (!x) {
-+    return NULL;
-+  }
-+  if (wuffs_lzw__decoder__initialize(
-+      x, sizeof(wuffs_lzw__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+    free(x);
-+    return NULL;
-+  }
-+  return x;
-+}
-+
-+size_t
-+sizeof__wuffs_lzw__decoder(void) {
-+  return sizeof(wuffs_lzw__decoder);
-+}
-+
-+// ---------------- Function Implementations
-+
-+// -------- func lzw.decoder.get_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_lzw__decoder__get_quirk(
-+    const wuffs_lzw__decoder* self,
-+    uint32_t a_key) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  if (a_key == 1348378624u) {
-+    return ((uint64_t)(self->private_impl.f_pending_literal_width_plus_one));
-+  }
-+  return 0u;
-+}
-+
-+// -------- func lzw.decoder.set_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_lzw__decoder__set_quirk(
-+    wuffs_lzw__decoder* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+
-+  if (a_key == 1348378624u) {
-+    if (a_value > 9u) {
-+      return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+    }
-+    self->private_impl.f_pending_literal_width_plus_one = ((uint32_t)(a_value));
-+    return wuffs_base__make_status(NULL);
-+  }
-+  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+}
-+
-+// -------- func lzw.decoder.dst_history_retain_length
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
-+wuffs_lzw__decoder__dst_history_retain_length(
-+    const wuffs_lzw__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__make_optional_u63(false, 0u);
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__make_optional_u63(false, 0u);
-+  }
-+
-+  return wuffs_base__utility__make_optional_u63(true, 0u);
-+}
-+
-+// -------- func lzw.decoder.workbuf_len
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_lzw__decoder__workbuf_len(
-+    const wuffs_lzw__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+
-+  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
-+}
-+
-+// -------- func lzw.decoder.transform_io
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_lzw__decoder__transform_io(
-+    wuffs_lzw__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_dst || !a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 1)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint32_t v_i = 0;
-+
-+  uint32_t coro_susp_point = self->private_impl.p_transform_io;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    self->private_impl.f_literal_width = 8u;
-+    if (self->private_impl.f_pending_literal_width_plus_one > 0u) {
-+      self->private_impl.f_literal_width = (self->private_impl.f_pending_literal_width_plus_one - 1u);
-+    }
-+    self->private_impl.f_clear_code = (((uint32_t)(1u)) << self->private_impl.f_literal_width);
-+    self->private_impl.f_end_code = (self->private_impl.f_clear_code + 1u);
-+    self->private_impl.f_save_code = self->private_impl.f_end_code;
-+    self->private_impl.f_prev_code = self->private_impl.f_end_code;
-+    self->private_impl.f_width = (self->private_impl.f_literal_width + 1u);
-+    self->private_impl.f_bits = 0u;
-+    self->private_impl.f_n_bits = 0u;
-+    self->private_impl.f_output_ri = 0u;
-+    self->private_impl.f_output_wi = 0u;
-+    v_i = 0u;
-+    while (v_i < self->private_impl.f_clear_code) {
-+      self->private_data.f_lm1s[v_i] = 0u;
-+      self->private_data.f_suffixes[v_i][0u] = ((uint8_t)(v_i));
-+      v_i += 1u;
-+    }
-+    while (true) {
-+      wuffs_lzw__decoder__read_from(self, a_src);
-+      if (self->private_impl.f_output_wi > 0u) {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        status = wuffs_lzw__decoder__write_to(self, a_dst);
-+        if (status.repr) {
-+          goto suspend;
-+        }
-+      }
-+      if (self->private_impl.f_read_from_return_value == 0u) {
-+        break;
-+      } else if (self->private_impl.f_read_from_return_value == 1u) {
-+        continue;
-+      } else if (self->private_impl.f_read_from_return_value == 2u) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
-+      } else if (self->private_impl.f_read_from_return_value == 3u) {
-+        status = wuffs_base__make_status(wuffs_lzw__error__truncated_input);
-+        goto exit;
-+      } else if (self->private_impl.f_read_from_return_value == 4u) {
-+        status = wuffs_base__make_status(wuffs_lzw__error__bad_code);
-+        goto exit;
-+      } else {
-+        status = wuffs_base__make_status(wuffs_lzw__error__internal_error_inconsistent_i_o);
-+        goto exit;
-+      }
-+    }
-+
-+    ok:
-+    self->private_impl.p_transform_io = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func lzw.decoder.read_from
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_lzw__decoder__read_from(
-+    wuffs_lzw__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  uint32_t v_clear_code = 0;
-+  uint32_t v_end_code = 0;
-+  uint32_t v_save_code = 0;
-+  uint32_t v_prev_code = 0;
-+  uint32_t v_width = 0;
-+  uint32_t v_bits = 0;
-+  uint32_t v_n_bits = 0;
-+  uint32_t v_output_wi = 0;
-+  uint32_t v_code = 0;
-+  uint32_t v_c = 0;
-+  uint32_t v_o = 0;
-+  uint32_t v_steps = 0;
-+  uint8_t v_first_byte = 0;
-+  uint16_t v_lm1_b = 0;
-+  uint16_t v_lm1_a = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  v_clear_code = self->private_impl.f_clear_code;
-+  v_end_code = self->private_impl.f_end_code;
-+  v_save_code = self->private_impl.f_save_code;
-+  v_prev_code = self->private_impl.f_prev_code;
-+  v_width = self->private_impl.f_width;
-+  v_bits = self->private_impl.f_bits;
-+  v_n_bits = self->private_impl.f_n_bits;
-+  v_output_wi = self->private_impl.f_output_wi;
-+  while (true) {
-+    if (v_n_bits < v_width) {
-+      if (((uint64_t)(io2_a_src - iop_a_src)) >= 4u) {
-+        v_bits |= ((uint32_t)(wuffs_base__peek_u32le__no_bounds_check(iop_a_src) << v_n_bits));
-+        iop_a_src += ((31u - v_n_bits) >> 3u);
-+        v_n_bits |= 24u;
-+      } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+        if (a_src && a_src->meta.closed) {
-+          self->private_impl.f_read_from_return_value = 3u;
-+        } else {
-+          self->private_impl.f_read_from_return_value = 2u;
-+        }
-+        break;
-+      } else {
-+        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
-+        iop_a_src += 1u;
-+        v_n_bits += 8u;
-+        if (v_n_bits >= v_width) {
-+        } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+          if (a_src && a_src->meta.closed) {
-+            self->private_impl.f_read_from_return_value = 3u;
-+          } else {
-+            self->private_impl.f_read_from_return_value = 2u;
-+          }
-+          break;
-+        } else {
-+          v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
-+          iop_a_src += 1u;
-+          v_n_bits += 8u;
-+          if (v_n_bits < v_width) {
-+            self->private_impl.f_read_from_return_value = 5u;
-+            break;
-+          }
-+        }
-+      }
-+    }
-+    v_code = ((v_bits) & WUFFS_PRIVATE_IMPL__LOW_BITS_MASK__U32(v_width));
-+    v_bits >>= v_width;
-+    v_n_bits -= v_width;
-+    if (v_code < v_clear_code) {
-+      self->private_data.f_output[v_output_wi] = ((uint8_t)(v_code));
-+      v_output_wi = ((v_output_wi + 1u) & 8191u);
-+      if (v_save_code <= 4095u) {
-+        v_lm1_a = ((uint16_t)(((uint16_t)(self->private_data.f_lm1s[v_prev_code] + 1u)) & 4095u));
-+        self->private_data.f_lm1s[v_save_code] = v_lm1_a;
-+        if (((uint16_t)(v_lm1_a % 8u)) != 0u) {
-+          self->private_impl.f_prefixes[v_save_code] = self->private_impl.f_prefixes[v_prev_code];
-+          memcpy(self->private_data.f_suffixes[v_save_code],self->private_data.f_suffixes[v_prev_code], sizeof(self->private_data.f_suffixes[v_save_code]));
-+          self->private_data.f_suffixes[v_save_code][((uint16_t)(v_lm1_a % 8u))] = ((uint8_t)(v_code));
-+        } else {
-+          self->private_impl.f_prefixes[v_save_code] = ((uint16_t)(v_prev_code));
-+          self->private_data.f_suffixes[v_save_code][0u] = ((uint8_t)(v_code));
-+        }
-+        v_save_code += 1u;
-+        if (v_width < 12u) {
-+          v_width += (1u & (v_save_code >> v_width));
-+        }
-+        v_prev_code = v_code;
-+      }
-+    } else if (v_code <= v_end_code) {
-+      if (v_code == v_end_code) {
-+        self->private_impl.f_read_from_return_value = 0u;
-+        break;
-+      }
-+      v_save_code = v_end_code;
-+      v_prev_code = v_end_code;
-+      v_width = (self->private_impl.f_literal_width + 1u);
-+    } else if (v_code <= v_save_code) {
-+      v_c = v_code;
-+      if (v_code == v_save_code) {
-+        v_c = v_prev_code;
-+      }
-+      v_o = ((v_output_wi + (((uint32_t)(self->private_data.f_lm1s[v_c])) & 4294967288u)) & 8191u);
-+      v_output_wi = ((v_output_wi + 1u + ((uint32_t)(self->private_data.f_lm1s[v_c]))) & 8191u);
-+      v_steps = (((uint32_t)(self->private_data.f_lm1s[v_c])) >> 3u);
-+      while (true) {
-+        memcpy((self->private_data.f_output)+(v_o), (self->private_data.f_suffixes[v_c]), 8u);
-+        if (v_steps <= 0u) {
-+          break;
-+        }
-+        v_steps -= 1u;
-+        v_o = (((uint32_t)(v_o - 8u)) & 8191u);
-+        v_c = ((uint32_t)(self->private_impl.f_prefixes[v_c]));
-+      }
-+      v_first_byte = self->private_data.f_suffixes[v_c][0u];
-+      if (v_code == v_save_code) {
-+        self->private_data.f_output[v_output_wi] = v_first_byte;
-+        v_output_wi = ((v_output_wi + 1u) & 8191u);
-+      }
-+      if (v_save_code <= 4095u) {
-+        v_lm1_b = ((uint16_t)(((uint16_t)(self->private_data.f_lm1s[v_prev_code] + 1u)) & 4095u));
-+        self->private_data.f_lm1s[v_save_code] = v_lm1_b;
-+        if (((uint16_t)(v_lm1_b % 8u)) != 0u) {
-+          self->private_impl.f_prefixes[v_save_code] = self->private_impl.f_prefixes[v_prev_code];
-+          memcpy(self->private_data.f_suffixes[v_save_code],self->private_data.f_suffixes[v_prev_code], sizeof(self->private_data.f_suffixes[v_save_code]));
-+          self->private_data.f_suffixes[v_save_code][((uint16_t)(v_lm1_b % 8u))] = v_first_byte;
-+        } else {
-+          self->private_impl.f_prefixes[v_save_code] = ((uint16_t)(v_prev_code));
-+          self->private_data.f_suffixes[v_save_code][0u] = ((uint8_t)(v_first_byte));
-+        }
-+        v_save_code += 1u;
-+        if (v_width < 12u) {
-+          v_width += (1u & (v_save_code >> v_width));
-+        }
-+        v_prev_code = v_code;
-+      }
-+    } else {
-+      self->private_impl.f_read_from_return_value = 4u;
-+      break;
-+    }
-+    if (v_output_wi > 4095u) {
-+      self->private_impl.f_read_from_return_value = 1u;
-+      break;
-+    }
-+  }
-+  if (self->private_impl.f_read_from_return_value != 2u) {
-+    while (v_n_bits >= 8u) {
-+      v_n_bits -= 8u;
-+      if (iop_a_src > io1_a_src) {
-+        iop_a_src--;
-+      } else {
-+        self->private_impl.f_read_from_return_value = 5u;
-+        break;
-+      }
-+    }
-+  }
-+  self->private_impl.f_save_code = v_save_code;
-+  self->private_impl.f_prev_code = v_prev_code;
-+  self->private_impl.f_width = v_width;
-+  self->private_impl.f_bits = v_bits;
-+  self->private_impl.f_n_bits = v_n_bits;
-+  self->private_impl.f_output_wi = v_output_wi;
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+// -------- func lzw.decoder.write_to
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_lzw__decoder__write_to(
-+    wuffs_lzw__decoder* self,
-+    wuffs_base__io_buffer* a_dst) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__slice_u8 v_s = {0};
-+  uint64_t v_n = 0;
-+
-+  uint8_t* iop_a_dst = NULL;
-+  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-+    }
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_write_to;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (self->private_impl.f_output_wi > 0u) {
-+      if (self->private_impl.f_output_ri > self->private_impl.f_output_wi) {
-+        status = wuffs_base__make_status(wuffs_lzw__error__internal_error_inconsistent_i_o);
-+        goto exit;
-+      }
-+      v_s = wuffs_base__make_slice_u8_ij(self->private_data.f_output,
-+          self->private_impl.f_output_ri,
-+          self->private_impl.f_output_wi);
-+      v_n = wuffs_private_impl__io_writer__copy_from_slice(&iop_a_dst, io2_a_dst,v_s);
-+      if (v_n == ((uint64_t)(v_s.len))) {
-+        self->private_impl.f_output_ri = 0u;
-+        self->private_impl.f_output_wi = 0u;
-+        status = wuffs_base__make_status(NULL);
-+        goto ok;
-+      }
-+      self->private_impl.f_output_ri = (((uint32_t)(self->private_impl.f_output_ri + ((uint32_t)(v_n)))) & 8191u);
-+      status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+
-+    ok:
-+    self->private_impl.p_write_to = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_write_to = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func lzw.decoder.flush
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__slice_u8
-+wuffs_lzw__decoder__flush(
-+    wuffs_lzw__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__empty_slice_u8();
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__empty_slice_u8();
-+  }
-+
-+  uint32_t v_ri = 0;
-+  uint32_t v_wi = 0;
-+
-+  v_ri = self->private_impl.f_output_ri;
-+  v_wi = self->private_impl.f_output_wi;
-+  self->private_impl.f_output_ri = 0u;
-+  self->private_impl.f_output_wi = 0u;
-+  if (v_ri <= v_wi) {
-+    return wuffs_base__make_slice_u8_ij(self->private_data.f_output, v_ri, v_wi);
-+  }
-+  return wuffs_base__make_slice_u8(self->private_data.f_output, 0);
-+}
-+
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW)
-+
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM)
-+
-+// ---------------- Status Codes Implementations
-+
-+const char wuffs_netpbm__error__bad_header[] = "#netpbm: bad header";
-+const char wuffs_netpbm__error__truncated_input[] = "#netpbm: truncated input";
-+const char wuffs_netpbm__error__unsupported_netpbm_file[] = "#netpbm: unsupported Netpbm file";
-+const char wuffs_netpbm__note__internal_note_short_read[] = "@netpbm: internal note: short read";
-+
-+// ---------------- Private Consts
-+
-+// ---------------- Private Initializer Prototypes
-+
-+// ---------------- Private Function Prototypes
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_netpbm__decoder__do_decode_image_config(
-+    wuffs_netpbm__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_netpbm__decoder__do_decode_frame_config(
-+    wuffs_netpbm__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_netpbm__decoder__do_decode_frame(
-+    wuffs_netpbm__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_netpbm__decoder__swizzle(
-+    wuffs_netpbm__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+// ---------------- VTables
-+
-+const wuffs_base__image_decoder__func_ptrs
-+wuffs_netpbm__decoder__func_ptrs_for__wuffs_base__image_decoder = {
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__pixel_buffer*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__pixel_blend,
-+      wuffs_base__slice_u8,
-+      wuffs_base__decode_frame_options*))(&wuffs_netpbm__decoder__decode_frame),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__frame_config*,
-+      wuffs_base__io_buffer*))(&wuffs_netpbm__decoder__decode_frame_config),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__image_config*,
-+      wuffs_base__io_buffer*))(&wuffs_netpbm__decoder__decode_image_config),
-+  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_netpbm__decoder__frame_dirty_rect),
-+  (uint64_t(*)(const void*,
-+      uint32_t))(&wuffs_netpbm__decoder__get_quirk),
-+  (uint32_t(*)(const void*))(&wuffs_netpbm__decoder__num_animation_loops),
-+  (uint64_t(*)(const void*))(&wuffs_netpbm__decoder__num_decoded_frame_configs),
-+  (uint64_t(*)(const void*))(&wuffs_netpbm__decoder__num_decoded_frames),
-+  (wuffs_base__status(*)(void*,
-+      uint64_t,
-+      uint64_t))(&wuffs_netpbm__decoder__restart_frame),
-+  (wuffs_base__status(*)(void*,
-+      uint32_t,
-+      uint64_t))(&wuffs_netpbm__decoder__set_quirk),
-+  (wuffs_base__empty_struct(*)(void*,
-+      uint32_t,
-+      bool))(&wuffs_netpbm__decoder__set_report_metadata),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__more_information*,
-+      wuffs_base__io_buffer*))(&wuffs_netpbm__decoder__tell_me_more),
-+  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_netpbm__decoder__workbuf_len),
-+};
-+
-+// ---------------- Initializer Implementations
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_netpbm__decoder__initialize(
-+    wuffs_netpbm__decoder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options){
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (sizeof(*self) != sizeof_star_self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  }
-+  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
-+      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+  }
-+
-+  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
-+    // The whole point of this if-check is to detect an uninitialized *self.
-+    // We disable the warning on GCC. Clang-5.0 does not have this warning.
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+#endif
-+    if (self->private_impl.magic != 0) {
-+      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+    }
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+  } else {
-+    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
-+      memset(self, 0, sizeof(*self));
-+      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-+    } else {
-+      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+    }
-+  }
-+
-+  self->private_impl.magic = WUFFS_BASE__MAGIC;
-+  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
-+      wuffs_base__image_decoder__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
-+      (const void*)(&wuffs_netpbm__decoder__func_ptrs_for__wuffs_base__image_decoder);
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+wuffs_netpbm__decoder*
-+wuffs_netpbm__decoder__alloc(void) {
-+  wuffs_netpbm__decoder* x =
-+      (wuffs_netpbm__decoder*)(calloc(1, sizeof(wuffs_netpbm__decoder)));
-+  if (!x) {
-+    return NULL;
-+  }
-+  if (wuffs_netpbm__decoder__initialize(
-+      x, sizeof(wuffs_netpbm__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+    free(x);
-+    return NULL;
-+  }
-+  return x;
-+}
-+
-+size_t
-+sizeof__wuffs_netpbm__decoder(void) {
-+  return sizeof(wuffs_netpbm__decoder);
-+}
-+
-+// ---------------- Function Implementations
-+
-+// -------- func netpbm.decoder.get_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_netpbm__decoder__get_quirk(
-+    const wuffs_netpbm__decoder* self,
-+    uint32_t a_key) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  return 0u;
-+}
-+
-+// -------- func netpbm.decoder.set_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_netpbm__decoder__set_quirk(
-+    wuffs_netpbm__decoder* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+
-+  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+}
-+
-+// -------- func netpbm.decoder.decode_image_config
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_netpbm__decoder__decode_image_config(
-+    wuffs_netpbm__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 1)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_image_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_netpbm__decoder__do_decode_image_config(self, a_dst, a_src);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_netpbm__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+
-+    ok:
-+    self->private_impl.p_decode_image_config = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func netpbm.decoder.do_decode_image_config
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_netpbm__decoder__do_decode_image_config(
-+    wuffs_netpbm__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_c8 = 0;
-+  uint32_t v_n = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_call_sequence != 0u) {
-+      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+      goto exit;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_0 = *iop_a_src++;
-+      v_c8 = t_0;
-+    }
-+    if (v_c8 != 80u) {
-+      status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
-+      goto exit;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_1 = *iop_a_src++;
-+      v_c8 = t_1;
-+    }
-+    if ((v_c8 < 49u) || (55u < v_c8)) {
-+      status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
-+      goto exit;
-+    } else if (v_c8 == 53u) {
-+      self->private_impl.f_pixfmt = 536870920u;
-+    } else if (v_c8 == 54u) {
-+      self->private_impl.f_pixfmt = 2684356744u;
-+    } else {
-+      status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file);
-+      goto exit;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_2 = *iop_a_src++;
-+      v_c8 = t_2;
-+    }
-+    if (v_c8 != 10u) {
-+      status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
-+      goto exit;
-+    }
-+    while (true) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_3 = *iop_a_src++;
-+        v_c8 = t_3;
-+      }
-+      if ((v_c8 == 32u) || (v_c8 == 9u)) {
-+        continue;
-+      } else if (v_c8 == 35u) {
-+        while (true) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint8_t t_4 = *iop_a_src++;
-+            v_c8 = t_4;
-+          }
-+          if (v_c8 == 10u) {
-+            break;
-+          }
-+        }
-+        continue;
-+      } else if ((v_c8 < 48u) || (57u < v_c8)) {
-+        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
-+        goto exit;
-+      }
-+      self->private_impl.f_width = ((uint32_t)(((uint8_t)(v_c8 - 48u))));
-+      break;
-+    }
-+    while (true) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_5 = *iop_a_src++;
-+        v_c8 = t_5;
-+      }
-+      if ((v_c8 == 32u) || (v_c8 == 9u)) {
-+        break;
-+      } else if ((v_c8 < 48u) || (57u < v_c8)) {
-+        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
-+        goto exit;
-+      }
-+      v_n = ((10u * self->private_impl.f_width) + ((uint32_t)(((uint8_t)(v_c8 - 48u)))));
-+      if (v_n > 16777215u) {
-+        status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file);
-+        goto exit;
-+      }
-+      self->private_impl.f_width = v_n;
-+    }
-+    while (true) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_6 = *iop_a_src++;
-+        v_c8 = t_6;
-+      }
-+      if ((v_c8 == 32u) || (v_c8 == 9u)) {
-+        continue;
-+      } else if (v_c8 == 35u) {
-+        while (true) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint8_t t_7 = *iop_a_src++;
-+            v_c8 = t_7;
-+          }
-+          if (v_c8 == 10u) {
-+            break;
-+          }
-+        }
-+        continue;
-+      } else if ((v_c8 < 48u) || (57u < v_c8)) {
-+        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
-+        goto exit;
-+      }
-+      self->private_impl.f_height = ((uint32_t)(((uint8_t)(v_c8 - 48u))));
-+      break;
-+    }
-+    while (true) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_8 = *iop_a_src++;
-+        v_c8 = t_8;
-+      }
-+      if ((v_c8 == 32u) || (v_c8 == 9u) || (v_c8 == 13u)) {
-+        continue;
-+      } else if (v_c8 == 10u) {
-+        break;
-+      } else if ((v_c8 < 48u) || (57u < v_c8)) {
-+        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
-+        goto exit;
-+      }
-+      v_n = ((10u * self->private_impl.f_height) + ((uint32_t)(((uint8_t)(v_c8 - 48u)))));
-+      if (v_n > 16777215u) {
-+        status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file);
-+        goto exit;
-+      }
-+      self->private_impl.f_height = v_n;
-+    }
-+    while (true) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_9 = *iop_a_src++;
-+        v_c8 = t_9;
-+      }
-+      if ((v_c8 == 32u) || (v_c8 == 9u)) {
-+        continue;
-+      } else if (v_c8 == 35u) {
-+        while (true) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint8_t t_10 = *iop_a_src++;
-+            v_c8 = t_10;
-+          }
-+          if (v_c8 == 10u) {
-+            break;
-+          }
-+        }
-+        continue;
-+      } else if ((v_c8 < 48u) || (57u < v_c8)) {
-+        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
-+        goto exit;
-+      }
-+      self->private_impl.f_max_value = ((uint32_t)(((uint8_t)(v_c8 - 48u))));
-+      break;
-+    }
-+    while (true) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_11 = *iop_a_src++;
-+        v_c8 = t_11;
-+      }
-+      if ((v_c8 == 32u) || (v_c8 == 9u) || (v_c8 == 13u)) {
-+        continue;
-+      } else if (v_c8 == 10u) {
-+        break;
-+      } else if ((v_c8 < 48u) || (57u < v_c8)) {
-+        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
-+        goto exit;
-+      }
-+      v_n = ((10u * self->private_impl.f_max_value) + ((uint32_t)(((uint8_t)(v_c8 - 48u)))));
-+      if (v_n > 16777215u) {
-+        status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file);
-+        goto exit;
-+      }
-+      self->private_impl.f_max_value = v_n;
-+    }
-+    if (self->private_impl.f_max_value != 255u) {
-+      status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file);
-+      goto exit;
-+    }
-+    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
-+    if (a_dst != NULL) {
-+      wuffs_base__image_config__set(
-+          a_dst,
-+          self->private_impl.f_pixfmt,
-+          0u,
-+          self->private_impl.f_width,
-+          self->private_impl.f_height,
-+          self->private_impl.f_frame_config_io_position,
-+          false);
-+    }
-+    self->private_impl.f_call_sequence = 32u;
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_do_decode_image_config = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func netpbm.decoder.decode_frame_config
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_netpbm__decoder__decode_frame_config(
-+    wuffs_netpbm__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 2)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_netpbm__decoder__do_decode_frame_config(self, a_dst, a_src);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_netpbm__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+
-+    ok:
-+    self->private_impl.p_decode_frame_config = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func netpbm.decoder.do_decode_frame_config
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_netpbm__decoder__do_decode_frame_config(
-+    wuffs_netpbm__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_call_sequence == 32u) {
-+    } else if (self->private_impl.f_call_sequence < 32u) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      status = wuffs_netpbm__decoder__do_decode_image_config(self, NULL, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+    } else if (self->private_impl.f_call_sequence == 40u) {
-+      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
-+        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
-+        goto exit;
-+      }
-+    } else if (self->private_impl.f_call_sequence == 64u) {
-+      self->private_impl.f_call_sequence = 96u;
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-+    } else {
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-+    }
-+    if (a_dst != NULL) {
-+      wuffs_base__frame_config__set(
-+          a_dst,
-+          wuffs_base__utility__make_rect_ie_u32(
-+          0u,
-+          0u,
-+          self->private_impl.f_width,
-+          self->private_impl.f_height),
-+          ((wuffs_base__flicks)(0u)),
-+          0u,
-+          self->private_impl.f_frame_config_io_position,
-+          0u,
-+          false,
-+          false,
-+          0u);
-+    }
-+    self->private_impl.f_call_sequence = 64u;
-+
-+    ok:
-+    self->private_impl.p_do_decode_frame_config = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func netpbm.decoder.decode_frame
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_netpbm__decoder__decode_frame(
-+    wuffs_netpbm__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_dst || !a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 3)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_frame;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_netpbm__decoder__do_decode_frame(self,
-+            a_dst,
-+            a_src,
-+            a_blend,
-+            a_workbuf,
-+            a_opts);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_netpbm__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+
-+    ok:
-+    self->private_impl.p_decode_frame = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func netpbm.decoder.do_decode_frame
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_netpbm__decoder__do_decode_frame(
-+    wuffs_netpbm__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_call_sequence == 64u) {
-+    } else if (self->private_impl.f_call_sequence < 64u) {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      status = wuffs_netpbm__decoder__do_decode_frame_config(self, NULL, a_src);
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+    } else {
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-+    }
-+    self->private_impl.f_dst_x = 0u;
-+    self->private_impl.f_dst_y = 0u;
-+    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
-+        wuffs_base__pixel_buffer__pixel_format(a_dst),
-+        wuffs_base__pixel_buffer__palette(a_dst),
-+        wuffs_base__utility__make_pixel_format(self->private_impl.f_pixfmt),
-+        wuffs_base__utility__empty_slice_u8(),
-+        a_blend);
-+    if ( ! wuffs_base__status__is_ok(&v_status)) {
-+      status = v_status;
-+      if (wuffs_base__status__is_error(&status)) {
-+        goto exit;
-+      } else if (wuffs_base__status__is_suspension(&status)) {
-+        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+        goto exit;
-+      }
-+      goto ok;
-+    }
-+    while (true) {
-+      v_status = wuffs_netpbm__decoder__swizzle(self, a_dst, a_src);
-+      if (wuffs_base__status__is_ok(&v_status)) {
-+        break;
-+      } else if (v_status.repr != wuffs_netpbm__note__internal_note_short_read) {
-+        status = v_status;
-+        if (wuffs_base__status__is_error(&status)) {
-+          goto exit;
-+        } else if (wuffs_base__status__is_suspension(&status)) {
-+          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+          goto exit;
-+        }
-+        goto ok;
-+      }
-+      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
-+    }
-+    self->private_impl.f_call_sequence = 96u;
-+
-+    ok:
-+    self->private_impl.p_do_decode_frame = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  return status;
-+}
-+
-+// -------- func netpbm.decoder.swizzle
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_netpbm__decoder__swizzle(
-+    wuffs_netpbm__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__pixel_format v_dst_pixfmt = {0};
-+  uint32_t v_dst_bits_per_pixel = 0;
-+  uint32_t v_dst_bytes_per_pixel = 0;
-+  uint64_t v_dst_bytes_per_row = 0;
-+  uint32_t v_src_bytes_per_pixel = 0;
-+  wuffs_base__table_u8 v_tab = {0};
-+  wuffs_base__slice_u8 v_dst = {0};
-+  uint64_t v_i = 0;
-+  uint64_t v_j = 0;
-+  uint64_t v_n = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
-+  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
-+  if ((v_dst_bits_per_pixel & 7u) != 0u) {
-+    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+    goto exit;
-+  }
-+  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
-+  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
-+  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
-+  while (true) {
-+    if (self->private_impl.f_dst_x == self->private_impl.f_width) {
-+      self->private_impl.f_dst_x = 0u;
-+      self->private_impl.f_dst_y += 1u;
-+      if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
-+        break;
-+      }
-+    }
-+    v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
-+    if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
-+      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
-+    }
-+    v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
-+    if (v_i >= ((uint64_t)(v_dst.len))) {
-+      v_src_bytes_per_pixel = 1u;
-+      if (self->private_impl.f_pixfmt == 2684356744u) {
-+        v_src_bytes_per_pixel = 3u;
-+      }
-+      v_n = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(v_src_bytes_per_pixel)));
-+      v_n = wuffs_base__u64__min(v_n, ((uint64_t)(((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x)))));
-+      v_j = v_n;
-+      while (v_j >= 8u) {
-+        if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 8u)))) {
-+          iop_a_src += (v_src_bytes_per_pixel * 8u);
-+        }
-+        v_j -= 8u;
-+      }
-+      while (v_j > 0u) {
-+        if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 1u)))) {
-+          iop_a_src += (v_src_bytes_per_pixel * 1u);
-+        }
-+        v_j -= 1u;
-+      }
-+    } else {
-+      v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
-+          &self->private_impl.f_swizzler,
-+          wuffs_base__slice_u8__subslice_i(v_dst, v_i),
-+          wuffs_base__pixel_buffer__palette(a_dst),
-+          &iop_a_src,
-+          io2_a_src);
-+    }
-+    if (v_n == 0u) {
-+      status = wuffs_base__make_status(wuffs_netpbm__note__internal_note_short_read);
-+      goto ok;
-+    }
-+    wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
-+  }
-+  status = wuffs_base__make_status(NULL);
-+  goto ok;
-+
-+  ok:
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func netpbm.decoder.frame_dirty_rect
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
-+wuffs_netpbm__decoder__frame_dirty_rect(
-+    const wuffs_netpbm__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_rect_ie_u32();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_rect_ie_u32();
-+  }
-+
-+  return wuffs_base__utility__make_rect_ie_u32(
-+      0u,
-+      0u,
-+      self->private_impl.f_width,
-+      self->private_impl.f_height);
-+}
-+
-+// -------- func netpbm.decoder.num_animation_loops
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_netpbm__decoder__num_animation_loops(
-+    const wuffs_netpbm__decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  return 0u;
-+}
-+
-+// -------- func netpbm.decoder.num_decoded_frame_configs
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_netpbm__decoder__num_decoded_frame_configs(
-+    const wuffs_netpbm__decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  if (self->private_impl.f_call_sequence > 32u) {
-+    return 1u;
-+  }
-+  return 0u;
-+}
-+
-+// -------- func netpbm.decoder.num_decoded_frames
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_netpbm__decoder__num_decoded_frames(
-+    const wuffs_netpbm__decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  if (self->private_impl.f_call_sequence > 64u) {
-+    return 1u;
-+  }
-+  return 0u;
-+}
-+
-+// -------- func netpbm.decoder.restart_frame
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_netpbm__decoder__restart_frame(
-+    wuffs_netpbm__decoder* self,
-+    uint64_t a_index,
-+    uint64_t a_io_position) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+
-+  if (self->private_impl.f_call_sequence < 32u) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+  }
-+  if ((a_index != 0u) || (a_io_position != self->private_impl.f_frame_config_io_position)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  self->private_impl.f_call_sequence = 40u;
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+// -------- func netpbm.decoder.set_report_metadata
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_netpbm__decoder__set_report_metadata(
-+    wuffs_netpbm__decoder* self,
-+    uint32_t a_fourcc,
-+    bool a_report) {
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+// -------- func netpbm.decoder.tell_me_more
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_netpbm__decoder__tell_me_more(
-+    wuffs_netpbm__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__more_information* a_minfo,
-+    wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_dst || !a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 4)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  status = wuffs_base__make_status(wuffs_base__error__no_more_information);
-+  goto exit;
-+
-+  goto ok;
-+  ok:
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func netpbm.decoder.workbuf_len
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_netpbm__decoder__workbuf_len(
-+    const wuffs_netpbm__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+
-+  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
-+}
-+
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM)
-+
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE)
-+
-+// ---------------- Status Codes Implementations
-+
-+const char wuffs_nie__error__bad_header[] = "#nie: bad header";
-+const char wuffs_nie__error__truncated_input[] = "#nie: truncated input";
-+const char wuffs_nie__error__unsupported_nie_file[] = "#nie: unsupported NIE file";
-+const char wuffs_nie__note__internal_note_short_read[] = "@nie: internal note: short read";
-+
-+// ---------------- Private Consts
-+
-+// ---------------- Private Initializer Prototypes
-+
-+// ---------------- Private Function Prototypes
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_nie__decoder__do_decode_image_config(
-+    wuffs_nie__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_nie__decoder__do_decode_frame_config(
-+    wuffs_nie__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_nie__decoder__do_decode_frame(
-+    wuffs_nie__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_nie__decoder__swizzle(
-+    wuffs_nie__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+// ---------------- VTables
-+
-+const wuffs_base__image_decoder__func_ptrs
-+wuffs_nie__decoder__func_ptrs_for__wuffs_base__image_decoder = {
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__pixel_buffer*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__pixel_blend,
-+      wuffs_base__slice_u8,
-+      wuffs_base__decode_frame_options*))(&wuffs_nie__decoder__decode_frame),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__frame_config*,
-+      wuffs_base__io_buffer*))(&wuffs_nie__decoder__decode_frame_config),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__image_config*,
-+      wuffs_base__io_buffer*))(&wuffs_nie__decoder__decode_image_config),
-+  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_nie__decoder__frame_dirty_rect),
-+  (uint64_t(*)(const void*,
-+      uint32_t))(&wuffs_nie__decoder__get_quirk),
-+  (uint32_t(*)(const void*))(&wuffs_nie__decoder__num_animation_loops),
-+  (uint64_t(*)(const void*))(&wuffs_nie__decoder__num_decoded_frame_configs),
-+  (uint64_t(*)(const void*))(&wuffs_nie__decoder__num_decoded_frames),
-+  (wuffs_base__status(*)(void*,
-+      uint64_t,
-+      uint64_t))(&wuffs_nie__decoder__restart_frame),
-+  (wuffs_base__status(*)(void*,
-+      uint32_t,
-+      uint64_t))(&wuffs_nie__decoder__set_quirk),
-+  (wuffs_base__empty_struct(*)(void*,
-+      uint32_t,
-+      bool))(&wuffs_nie__decoder__set_report_metadata),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__more_information*,
-+      wuffs_base__io_buffer*))(&wuffs_nie__decoder__tell_me_more),
-+  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_nie__decoder__workbuf_len),
-+};
-+
-+// ---------------- Initializer Implementations
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_nie__decoder__initialize(
-+    wuffs_nie__decoder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options){
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (sizeof(*self) != sizeof_star_self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  }
-+  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
-+      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+  }
-+
-+  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
-+    // The whole point of this if-check is to detect an uninitialized *self.
-+    // We disable the warning on GCC. Clang-5.0 does not have this warning.
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+#endif
-+    if (self->private_impl.magic != 0) {
-+      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+    }
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+  } else {
-+    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
-+      memset(self, 0, sizeof(*self));
-+      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-+    } else {
-+      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+    }
-+  }
-+
-+  self->private_impl.magic = WUFFS_BASE__MAGIC;
-+  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
-+      wuffs_base__image_decoder__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
-+      (const void*)(&wuffs_nie__decoder__func_ptrs_for__wuffs_base__image_decoder);
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+wuffs_nie__decoder*
-+wuffs_nie__decoder__alloc(void) {
-+  wuffs_nie__decoder* x =
-+      (wuffs_nie__decoder*)(calloc(1, sizeof(wuffs_nie__decoder)));
-+  if (!x) {
-+    return NULL;
-+  }
-+  if (wuffs_nie__decoder__initialize(
-+      x, sizeof(wuffs_nie__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+    free(x);
-+    return NULL;
-+  }
-+  return x;
-+}
-+
-+size_t
-+sizeof__wuffs_nie__decoder(void) {
-+  return sizeof(wuffs_nie__decoder);
-+}
-+
-+// ---------------- Function Implementations
-+
-+// -------- func nie.decoder.get_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_nie__decoder__get_quirk(
-+    const wuffs_nie__decoder* self,
-+    uint32_t a_key) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  return 0u;
-+}
-+
-+// -------- func nie.decoder.set_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_nie__decoder__set_quirk(
-+    wuffs_nie__decoder* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+
-+  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+}
-+
-+// -------- func nie.decoder.decode_image_config
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_nie__decoder__decode_image_config(
-+    wuffs_nie__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 1)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_image_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_nie__decoder__do_decode_image_config(self, a_dst, a_src);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_nie__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+
-+    ok:
-+    self->private_impl.p_decode_image_config = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func nie.decoder.do_decode_image_config
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_nie__decoder__do_decode_image_config(
-+    wuffs_nie__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint32_t v_a = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_call_sequence != 0u) {
-+      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+      goto exit;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      uint32_t t_0;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_do_decode_image_config.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
-+          *scratch <<= 8;
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
-+          if (num_bits_0 == 24) {
-+            t_0 = ((uint32_t)(*scratch));
-+            break;
-+          }
-+          num_bits_0 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_0)) << 56;
-+        }
-+      }
-+      v_a = t_0;
-+    }
-+    if (v_a != 1169146734u) {
-+      status = wuffs_base__make_status(wuffs_nie__error__bad_header);
-+      goto exit;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+      uint32_t t_1;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_do_decode_image_config.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
-+          *scratch <<= 8;
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
-+          if (num_bits_1 == 24) {
-+            t_1 = ((uint32_t)(*scratch));
-+            break;
-+          }
-+          num_bits_1 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_1)) << 56;
-+        }
-+      }
-+      v_a = t_1;
-+    }
-+    if (v_a == 879649535u) {
-+      self->private_impl.f_pixfmt = 2164295816u;
-+    } else if (v_a == 946758399u) {
-+      self->private_impl.f_pixfmt = 2164308923u;
-+    } else if (v_a == 879780607u) {
-+      status = wuffs_base__make_status(wuffs_nie__error__unsupported_nie_file);
-+      goto exit;
-+    } else if (v_a == 946889471u) {
-+      status = wuffs_base__make_status(wuffs_nie__error__unsupported_nie_file);
-+      goto exit;
-+    } else {
-+      status = wuffs_base__make_status(wuffs_nie__error__bad_header);
-+      goto exit;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+      uint32_t t_2;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_do_decode_image_config.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+          uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
-+          *scratch <<= 8;
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
-+          if (num_bits_2 == 24) {
-+            t_2 = ((uint32_t)(*scratch));
-+            break;
-+          }
-+          num_bits_2 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_2)) << 56;
-+        }
-+      }
-+      v_a = t_2;
-+    }
-+    if (v_a > 2147483647u) {
-+      status = wuffs_base__make_status(wuffs_nie__error__bad_header);
-+      goto exit;
-+    } else if (v_a > 16777215u) {
-+      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
-+      goto exit;
-+    }
-+    self->private_impl.f_width = v_a;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+      uint32_t t_3;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_3 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_do_decode_image_config.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+          uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
-+          *scratch <<= 8;
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
-+          if (num_bits_3 == 24) {
-+            t_3 = ((uint32_t)(*scratch));
-+            break;
-+          }
-+          num_bits_3 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_3)) << 56;
-+        }
-+      }
-+      v_a = t_3;
-+    }
-+    if (v_a > 2147483647u) {
-+      status = wuffs_base__make_status(wuffs_nie__error__bad_header);
-+      goto exit;
-+    } else if (v_a > 16777215u) {
-+      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
-+      goto exit;
-+    }
-+    self->private_impl.f_height = v_a;
-+    if (a_dst != NULL) {
-+      wuffs_base__image_config__set(
-+          a_dst,
-+          self->private_impl.f_pixfmt,
-+          0u,
-+          self->private_impl.f_width,
-+          self->private_impl.f_height,
-+          16u,
-+          false);
-+    }
-+    self->private_impl.f_call_sequence = 32u;
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_do_decode_image_config = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func nie.decoder.decode_frame_config
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_nie__decoder__decode_frame_config(
-+    wuffs_nie__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 2)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_nie__decoder__do_decode_frame_config(self, a_dst, a_src);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_nie__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+
-+    ok:
-+    self->private_impl.p_decode_frame_config = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func nie.decoder.do_decode_frame_config
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_nie__decoder__do_decode_frame_config(
-+    wuffs_nie__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_call_sequence == 32u) {
-+    } else if (self->private_impl.f_call_sequence < 32u) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      status = wuffs_nie__decoder__do_decode_image_config(self, NULL, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+    } else if (self->private_impl.f_call_sequence == 40u) {
-+      if (16u != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
-+        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
-+        goto exit;
-+      }
-+    } else if (self->private_impl.f_call_sequence == 64u) {
-+      self->private_impl.f_call_sequence = 96u;
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-+    } else {
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-+    }
-+    if (a_dst != NULL) {
-+      wuffs_base__frame_config__set(
-+          a_dst,
-+          wuffs_base__utility__make_rect_ie_u32(
-+          0u,
-+          0u,
-+          self->private_impl.f_width,
-+          self->private_impl.f_height),
-+          ((wuffs_base__flicks)(0u)),
-+          0u,
-+          16u,
-+          0u,
-+          false,
-+          false,
-+          0u);
-+    }
-+    self->private_impl.f_call_sequence = 64u;
-+
-+    ok:
-+    self->private_impl.p_do_decode_frame_config = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func nie.decoder.decode_frame
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_nie__decoder__decode_frame(
-+    wuffs_nie__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_dst || !a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 3)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_frame;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_nie__decoder__do_decode_frame(self,
-+            a_dst,
-+            a_src,
-+            a_blend,
-+            a_workbuf,
-+            a_opts);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_nie__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+
-+    ok:
-+    self->private_impl.p_decode_frame = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func nie.decoder.do_decode_frame
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_nie__decoder__do_decode_frame(
-+    wuffs_nie__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_call_sequence == 64u) {
-+    } else if (self->private_impl.f_call_sequence < 64u) {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      status = wuffs_nie__decoder__do_decode_frame_config(self, NULL, a_src);
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+    } else {
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-+    }
-+    self->private_impl.f_dst_x = 0u;
-+    self->private_impl.f_dst_y = 0u;
-+    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
-+        wuffs_base__pixel_buffer__pixel_format(a_dst),
-+        wuffs_base__pixel_buffer__palette(a_dst),
-+        wuffs_base__utility__make_pixel_format(self->private_impl.f_pixfmt),
-+        wuffs_base__utility__empty_slice_u8(),
-+        a_blend);
-+    if ( ! wuffs_base__status__is_ok(&v_status)) {
-+      status = v_status;
-+      if (wuffs_base__status__is_error(&status)) {
-+        goto exit;
-+      } else if (wuffs_base__status__is_suspension(&status)) {
-+        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+        goto exit;
-+      }
-+      goto ok;
-+    }
-+    while (true) {
-+      v_status = wuffs_nie__decoder__swizzle(self, a_dst, a_src);
-+      if (wuffs_base__status__is_ok(&v_status)) {
-+        break;
-+      } else if (v_status.repr != wuffs_nie__note__internal_note_short_read) {
-+        status = v_status;
-+        if (wuffs_base__status__is_error(&status)) {
-+          goto exit;
-+        } else if (wuffs_base__status__is_suspension(&status)) {
-+          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+          goto exit;
-+        }
-+        goto ok;
-+      }
-+      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
-+    }
-+    self->private_impl.f_call_sequence = 96u;
-+
-+    ok:
-+    self->private_impl.p_do_decode_frame = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  return status;
-+}
-+
-+// -------- func nie.decoder.swizzle
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_nie__decoder__swizzle(
-+    wuffs_nie__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__pixel_format v_dst_pixfmt = {0};
-+  uint32_t v_dst_bits_per_pixel = 0;
-+  uint32_t v_dst_bytes_per_pixel = 0;
-+  uint64_t v_dst_bytes_per_row = 0;
-+  uint32_t v_src_bytes_per_pixel = 0;
-+  wuffs_base__table_u8 v_tab = {0};
-+  wuffs_base__slice_u8 v_dst = {0};
-+  uint64_t v_i = 0;
-+  uint64_t v_j = 0;
-+  uint64_t v_n = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
-+  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
-+  if ((v_dst_bits_per_pixel & 7u) != 0u) {
-+    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+    goto exit;
-+  }
-+  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
-+  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
-+  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
-+  while (true) {
-+    if (self->private_impl.f_dst_x == self->private_impl.f_width) {
-+      self->private_impl.f_dst_x = 0u;
-+      self->private_impl.f_dst_y += 1u;
-+      if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
-+        break;
-+      }
-+    }
-+    v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
-+    if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
-+      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
-+    }
-+    v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
-+    if (v_i >= ((uint64_t)(v_dst.len))) {
-+      v_src_bytes_per_pixel = 4u;
-+      if (self->private_impl.f_pixfmt == 2164308923u) {
-+        v_src_bytes_per_pixel = 8u;
-+      }
-+      v_n = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(v_src_bytes_per_pixel)));
-+      v_n = wuffs_base__u64__min(v_n, ((uint64_t)(((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x)))));
-+      v_j = v_n;
-+      while (v_j >= 8u) {
-+        if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 8u)))) {
-+          iop_a_src += (v_src_bytes_per_pixel * 8u);
-+        }
-+        v_j -= 8u;
-+      }
-+      while (v_j > 0u) {
-+        if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 1u)))) {
-+          iop_a_src += (v_src_bytes_per_pixel * 1u);
-+        }
-+        v_j -= 1u;
-+      }
-+    } else {
-+      v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
-+          &self->private_impl.f_swizzler,
-+          wuffs_base__slice_u8__subslice_i(v_dst, v_i),
-+          wuffs_base__pixel_buffer__palette(a_dst),
-+          &iop_a_src,
-+          io2_a_src);
-+    }
-+    if (v_n == 0u) {
-+      status = wuffs_base__make_status(wuffs_nie__note__internal_note_short_read);
-+      goto ok;
-+    }
-+    wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
-+  }
-+  status = wuffs_base__make_status(NULL);
-+  goto ok;
-+
-+  ok:
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func nie.decoder.frame_dirty_rect
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
-+wuffs_nie__decoder__frame_dirty_rect(
-+    const wuffs_nie__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_rect_ie_u32();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_rect_ie_u32();
-+  }
-+
-+  return wuffs_base__utility__make_rect_ie_u32(
-+      0u,
-+      0u,
-+      self->private_impl.f_width,
-+      self->private_impl.f_height);
-+}
-+
-+// -------- func nie.decoder.num_animation_loops
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_nie__decoder__num_animation_loops(
-+    const wuffs_nie__decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  return 0u;
-+}
-+
-+// -------- func nie.decoder.num_decoded_frame_configs
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_nie__decoder__num_decoded_frame_configs(
-+    const wuffs_nie__decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  if (self->private_impl.f_call_sequence > 32u) {
-+    return 1u;
-+  }
-+  return 0u;
-+}
-+
-+// -------- func nie.decoder.num_decoded_frames
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_nie__decoder__num_decoded_frames(
-+    const wuffs_nie__decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  if (self->private_impl.f_call_sequence > 64u) {
-+    return 1u;
-+  }
-+  return 0u;
-+}
-+
-+// -------- func nie.decoder.restart_frame
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_nie__decoder__restart_frame(
-+    wuffs_nie__decoder* self,
-+    uint64_t a_index,
-+    uint64_t a_io_position) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+
-+  if (self->private_impl.f_call_sequence < 32u) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+  }
-+  if ((a_index != 0u) || (a_io_position != 16u)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  self->private_impl.f_call_sequence = 40u;
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+// -------- func nie.decoder.set_report_metadata
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_nie__decoder__set_report_metadata(
-+    wuffs_nie__decoder* self,
-+    uint32_t a_fourcc,
-+    bool a_report) {
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+// -------- func nie.decoder.tell_me_more
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_nie__decoder__tell_me_more(
-+    wuffs_nie__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__more_information* a_minfo,
-+    wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_dst || !a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 4)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  status = wuffs_base__make_status(wuffs_base__error__no_more_information);
-+  goto exit;
-+
-+  goto ok;
-+  ok:
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func nie.decoder.workbuf_len
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_nie__decoder__workbuf_len(
-+    const wuffs_nie__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+
-+  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
-+}
-+
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE)
-+
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ZLIB)
-+
-+// ---------------- Status Codes Implementations
-+
-+const char wuffs_zlib__note__dictionary_required[] = "@zlib: dictionary required";
-+const char wuffs_zlib__error__bad_checksum[] = "#zlib: bad checksum";
-+const char wuffs_zlib__error__bad_compression_method[] = "#zlib: bad compression method";
-+const char wuffs_zlib__error__bad_compression_window_size[] = "#zlib: bad compression window size";
-+const char wuffs_zlib__error__bad_parity_check[] = "#zlib: bad parity check";
-+const char wuffs_zlib__error__incorrect_dictionary[] = "#zlib: incorrect dictionary";
-+const char wuffs_zlib__error__truncated_input[] = "#zlib: truncated input";
-+
-+// ---------------- Private Consts
-+
-+#define WUFFS_ZLIB__QUIRKS_BASE 2113790976u
-+
-+#define WUFFS_ZLIB__QUIRKS_COUNT 1u
-+
-+// ---------------- Private Initializer Prototypes
-+
-+// ---------------- Private Function Prototypes
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_zlib__decoder__do_transform_io(
-+    wuffs_zlib__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf);
-+
-+// ---------------- VTables
-+
-+const wuffs_base__io_transformer__func_ptrs
-+wuffs_zlib__decoder__func_ptrs_for__wuffs_base__io_transformer = {
-+  (wuffs_base__optional_u63(*)(const void*))(&wuffs_zlib__decoder__dst_history_retain_length),
-+  (uint64_t(*)(const void*,
-+      uint32_t))(&wuffs_zlib__decoder__get_quirk),
-+  (wuffs_base__status(*)(void*,
-+      uint32_t,
-+      uint64_t))(&wuffs_zlib__decoder__set_quirk),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__slice_u8))(&wuffs_zlib__decoder__transform_io),
-+  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_zlib__decoder__workbuf_len),
-+};
-+
-+// ---------------- Initializer Implementations
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_zlib__decoder__initialize(
-+    wuffs_zlib__decoder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options){
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (sizeof(*self) != sizeof_star_self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  }
-+  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
-+      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+  }
-+
-+  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
-+    // The whole point of this if-check is to detect an uninitialized *self.
-+    // We disable the warning on GCC. Clang-5.0 does not have this warning.
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+#endif
-+    if (self->private_impl.magic != 0) {
-+      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+    }
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+  } else {
-+    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
-+      memset(self, 0, sizeof(*self));
-+      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-+    } else {
-+      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+    }
-+  }
-+
-+  {
-+    wuffs_base__status z = wuffs_adler32__hasher__initialize(
-+        &self->private_data.f_checksum, sizeof(self->private_data.f_checksum), WUFFS_VERSION, options);
-+    if (z.repr) {
-+      return z;
-+    }
-+  }
-+  {
-+    wuffs_base__status z = wuffs_adler32__hasher__initialize(
-+        &self->private_data.f_dict_id_hasher, sizeof(self->private_data.f_dict_id_hasher), WUFFS_VERSION, options);
-+    if (z.repr) {
-+      return z;
-+    }
-+  }
-+  {
-+    wuffs_base__status z = wuffs_deflate__decoder__initialize(
-+        &self->private_data.f_flate, sizeof(self->private_data.f_flate), WUFFS_VERSION, options);
-+    if (z.repr) {
-+      return z;
-+    }
-+  }
-+  self->private_impl.magic = WUFFS_BASE__MAGIC;
-+  self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
-+      wuffs_base__io_transformer__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
-+      (const void*)(&wuffs_zlib__decoder__func_ptrs_for__wuffs_base__io_transformer);
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+wuffs_zlib__decoder*
-+wuffs_zlib__decoder__alloc(void) {
-+  wuffs_zlib__decoder* x =
-+      (wuffs_zlib__decoder*)(calloc(1, sizeof(wuffs_zlib__decoder)));
-+  if (!x) {
-+    return NULL;
-+  }
-+  if (wuffs_zlib__decoder__initialize(
-+      x, sizeof(wuffs_zlib__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+    free(x);
-+    return NULL;
-+  }
-+  return x;
-+}
-+
-+size_t
-+sizeof__wuffs_zlib__decoder(void) {
-+  return sizeof(wuffs_zlib__decoder);
-+}
-+
-+// ---------------- Function Implementations
-+
-+// -------- func zlib.decoder.dictionary_id
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_zlib__decoder__dictionary_id(
-+    const wuffs_zlib__decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  return self->private_impl.f_dict_id_want;
-+}
-+
-+// -------- func zlib.decoder.add_dictionary
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_zlib__decoder__add_dictionary(
-+    wuffs_zlib__decoder* self,
-+    wuffs_base__slice_u8 a_dict) {
-+  if (!self) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+
-+  if (self->private_impl.f_header_complete) {
-+    self->private_impl.f_bad_call_sequence = true;
-+  } else {
-+    self->private_impl.f_dict_id_have = wuffs_adler32__hasher__update_u32(&self->private_data.f_dict_id_hasher, a_dict);
-+    wuffs_deflate__decoder__add_history(&self->private_data.f_flate, a_dict);
-+  }
-+  self->private_impl.f_got_dictionary = true;
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+// -------- func zlib.decoder.get_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_zlib__decoder__get_quirk(
-+    const wuffs_zlib__decoder* self,
-+    uint32_t a_key) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  uint32_t v_key = 0;
-+
-+  if ((a_key == 1u) && self->private_impl.f_ignore_checksum) {
-+    return 1u;
-+  } else if (a_key >= 2113790976u) {
-+    v_key = (a_key - 2113790976u);
-+    if (v_key < 1u) {
-+      if (self->private_impl.f_quirks[v_key]) {
-+        return 1u;
-+      }
-+    }
-+  }
-+  return 0u;
-+}
-+
-+// -------- func zlib.decoder.set_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_zlib__decoder__set_quirk(
-+    wuffs_zlib__decoder* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+
-+  if (self->private_impl.f_header_complete) {
-+    self->private_impl.f_bad_call_sequence = true;
-+    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+  } else if (a_key == 1u) {
-+    self->private_impl.f_ignore_checksum = (a_value > 0u);
-+    return wuffs_base__make_status(NULL);
-+  } else if (a_key >= 2113790976u) {
-+    a_key -= 2113790976u;
-+    if (a_key < 1u) {
-+      self->private_impl.f_quirks[a_key] = (a_value > 0u);
-+      return wuffs_base__make_status(NULL);
-+    }
-+  }
-+  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+}
-+
-+// -------- func zlib.decoder.dst_history_retain_length
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
-+wuffs_zlib__decoder__dst_history_retain_length(
-+    const wuffs_zlib__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__make_optional_u63(false, 0u);
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__make_optional_u63(false, 0u);
-+  }
-+
-+  return wuffs_base__utility__make_optional_u63(true, 0u);
-+}
-+
-+// -------- func zlib.decoder.workbuf_len
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_zlib__decoder__workbuf_len(
-+    const wuffs_zlib__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+
-+  return wuffs_base__utility__make_range_ii_u64(1u, 1u);
-+}
-+
-+// -------- func zlib.decoder.transform_io
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_zlib__decoder__transform_io(
-+    wuffs_zlib__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_dst || !a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 1)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_transform_io;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_zlib__decoder__do_transform_io(self, a_dst, a_src, a_workbuf);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_zlib__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+
-+    ok:
-+    self->private_impl.p_transform_io = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func zlib.decoder.do_transform_io
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_zlib__decoder__do_transform_io(
-+    wuffs_zlib__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint16_t v_x = 0;
-+  uint32_t v_checksum_have = 0;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+  uint32_t v_checksum_want = 0;
-+  uint64_t v_mark = 0;
-+
-+  uint8_t* iop_a_dst = NULL;
-+  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-+    }
-+  }
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_do_transform_io;
-+  if (coro_susp_point) {
-+    v_checksum_have = self->private_data.s_do_transform_io.v_checksum_have;
-+  }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_bad_call_sequence) {
-+      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+      goto exit;
-+    } else if (self->private_impl.f_quirks[0u]) {
-+    } else if ( ! self->private_impl.f_want_dictionary) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        uint16_t t_0;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+          t_0 = wuffs_base__peek_u16be__no_bounds_check(iop_a_src);
-+          iop_a_src += 2;
-+        } else {
-+          self->private_data.s_do_transform_io.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-           while (true) {
--            if (a_src) {
--              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--            }
--            v_number_length = wuffs_json__decoder__decode_number(self, a_src);
--            if (a_src) {
--              iop_a_src = a_src->data.ptr + a_src->meta.ri;
--            }
--            v_number_status = (v_number_length >> 8u);
--            v_vminor = 10486787u;
--            if ((v_number_length & 128u) != 0u) {
--              v_vminor = 10486785u;
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-             }
--            v_number_length = (v_number_length & 127u);
--            if (v_number_status == 0u) {
--              *iop_a_dst++ = wuffs_base__make_token(
--                  (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                  (((uint64_t)(v_number_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
-+            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+            uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
-+            *scratch >>= 8;
-+            *scratch <<= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
-+            if (num_bits_0 == 8) {
-+              t_0 = ((uint16_t)(*scratch >> 48));
-               break;
-             }
--            while (v_number_length > 0u) {
--              v_number_length -= 1u;
--              if (iop_a_src > io1_a_src) {
--                iop_a_src--;
--              } else {
--                status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
--                goto exit;
-+            num_bits_0 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_0));
-+          }
-+        }
-+        v_x = t_0;
-+      }
-+      if (((uint16_t)(((uint16_t)(v_x >> 8u)) & 15u)) != 8u) {
-+        status = wuffs_base__make_status(wuffs_zlib__error__bad_compression_method);
-+        goto exit;
-+      }
-+      if (((uint16_t)(v_x >> 12u)) > 7u) {
-+        status = wuffs_base__make_status(wuffs_zlib__error__bad_compression_window_size);
-+        goto exit;
-+      }
-+      if (((uint16_t)(v_x % 31u)) != 0u) {
-+        status = wuffs_base__make_status(wuffs_zlib__error__bad_parity_check);
-+        goto exit;
-+      }
-+      self->private_impl.f_want_dictionary = (((uint16_t)(v_x & 32u)) != 0u);
-+      if (self->private_impl.f_want_dictionary) {
-+        self->private_impl.f_dict_id_have = 1u;
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+          uint32_t t_1;
-+          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+            t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+            iop_a_src += 4;
-+          } else {
-+            self->private_data.s_do_transform_io.scratch = 0;
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+            while (true) {
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-               }
--            }
--            if (v_number_status == 1u) {
--              if (self->private_impl.f_quirks[14u]) {
--                if (a_dst) {
--                  a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--                }
--                if (a_src) {
--                  a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--                }
--                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
--                status = wuffs_json__decoder__decode_inf_nan(self, a_dst, a_src);
--                if (a_dst) {
--                  iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
--                }
--                if (a_src) {
--                  iop_a_src = a_src->data.ptr + a_src->meta.ri;
--                }
--                if (status.repr) {
--                  goto suspend;
--                }
-+              uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+              uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
-+              *scratch >>= 8;
-+              *scratch <<= 8;
-+              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
-+              if (num_bits_1 == 24) {
-+                t_1 = ((uint32_t)(*scratch >> 32));
-                 break;
-               }
--              status = wuffs_base__make_status(wuffs_json__error__bad_input);
--              goto exit;
--            } else if (v_number_status == 2u) {
--              status = wuffs_base__make_status(wuffs_json__error__unsupported_number_length);
--              goto exit;
--            } else {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(17);
--              while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(18);
--              }
--            }
--          }
--          break;
--        } else if (v_class == 5u) {
--          v_vminor = 2113553u;
--          if (v_depth == 0u) {
--          } else if (0u != (v_expect_after_value & (((uint32_t)(1u)) << 6u))) {
--            v_vminor = 2113601u;
--          } else {
--            v_vminor = 2113569u;
--          }
--          if (v_depth >= 1024u) {
--            status = wuffs_base__make_status(wuffs_json__error__unsupported_recursion_depth);
--            goto exit;
--          }
--          v_stack_byte = (v_depth / 32u);
--          v_stack_bit = (v_depth & 31u);
--          self->private_data.f_stack[v_stack_byte] |= (((uint32_t)(1u)) << v_stack_bit);
--          v_depth += 1u;
--          iop_a_src += 1u;
--          *iop_a_dst++ = wuffs_base__make_token(
--              (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--          v_expect = 4162u;
--          v_expect_after_value = 4164u;
--          goto label__outer__continue;
--        } else if (v_class == 6u) {
--          iop_a_src += 1u;
--          if (v_depth <= 1u) {
--            *iop_a_dst++ = wuffs_base__make_token(
--                (((uint64_t)(2101314u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--            goto label__outer__break;
--          }
--          v_depth -= 1u;
--          v_stack_byte = ((v_depth - 1u) / 32u);
--          v_stack_bit = ((v_depth - 1u) & 31u);
--          if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
--            *iop_a_dst++ = wuffs_base__make_token(
--                (((uint64_t)(2105410u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--            v_expect = 4356u;
--            v_expect_after_value = 4356u;
--          } else {
--            *iop_a_dst++ = wuffs_base__make_token(
--                (((uint64_t)(2113602u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--            v_expect = 4164u;
--            v_expect_after_value = 4164u;
--          }
--          goto label__outer__continue;
--        } else if (v_class == 7u) {
--          v_vminor = 2105361u;
--          if (v_depth == 0u) {
--          } else if (0u != (v_expect_after_value & (((uint32_t)(1u)) << 6u))) {
--            v_vminor = 2105409u;
--          } else {
--            v_vminor = 2105377u;
--          }
--          if (v_depth >= 1024u) {
--            status = wuffs_base__make_status(wuffs_json__error__unsupported_recursion_depth);
--            goto exit;
--          }
--          v_stack_byte = (v_depth / 32u);
--          v_stack_bit = (v_depth & 31u);
--          self->private_data.f_stack[v_stack_byte] &= (4294967295u ^ (((uint32_t)(1u)) << v_stack_bit));
--          v_depth += 1u;
--          iop_a_src += 1u;
--          *iop_a_dst++ = wuffs_base__make_token(
--              (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--          v_expect = 8114u;
--          v_expect_after_value = 4356u;
--          goto label__outer__continue;
--        } else if (v_class == 8u) {
--          iop_a_src += 1u;
--          if (v_depth <= 1u) {
--            *iop_a_dst++ = wuffs_base__make_token(
--                (((uint64_t)(2101282u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--            goto label__outer__break;
--          }
--          v_depth -= 1u;
--          v_stack_byte = ((v_depth - 1u) / 32u);
--          v_stack_bit = ((v_depth - 1u) & 31u);
--          if (0u == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1u)) << v_stack_bit))) {
--            *iop_a_dst++ = wuffs_base__make_token(
--                (((uint64_t)(2105378u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--            v_expect = 4356u;
--            v_expect_after_value = 4356u;
--          } else {
--            *iop_a_dst++ = wuffs_base__make_token(
--                (((uint64_t)(2113570u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--            v_expect = 4164u;
--            v_expect_after_value = 4164u;
--          }
--          goto label__outer__continue;
--        } else if (v_class == 9u) {
--          v_match = wuffs_base__io_reader__match7(iop_a_src, io2_a_src, a_src, 111546413966853u);
--          if (v_match == 0u) {
--            *iop_a_dst++ = wuffs_base__make_token(
--                (((uint64_t)(8388612u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                (((uint64_t)(5u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--            if (((uint64_t)(io2_a_src - iop_a_src)) < 5u) {
--              status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
--              goto exit;
--            }
--            iop_a_src += 5u;
--            break;
--          } else if (v_match == 1u) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(19);
--            goto label__outer__continue;
--          }
--        } else if (v_class == 10u) {
--          v_match = wuffs_base__io_reader__match7(iop_a_src, io2_a_src, a_src, 435762131972u);
--          if (v_match == 0u) {
--            *iop_a_dst++ = wuffs_base__make_token(
--                (((uint64_t)(8388616u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--            if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
--              status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
--              goto exit;
--            }
--            iop_a_src += 4u;
--            break;
--          } else if (v_match == 1u) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(20);
--            goto label__outer__continue;
--          }
--        } else if (v_class == 11u) {
--          v_match = wuffs_base__io_reader__match7(iop_a_src, io2_a_src, a_src, 465676103172u);
--          if (v_match == 0u) {
--            *iop_a_dst++ = wuffs_base__make_token(
--                (((uint64_t)(8388610u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--            if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
--              status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
--              goto exit;
--            }
--            iop_a_src += 4u;
--            break;
--          } else if (v_match == 1u) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(21);
--            goto label__outer__continue;
--          }
--          if (self->private_impl.f_quirks[14u]) {
--            if (a_dst) {
--              a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--            }
--            if (a_src) {
--              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--            }
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22);
--            status = wuffs_json__decoder__decode_inf_nan(self, a_dst, a_src);
--            if (a_dst) {
--              iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
--            }
--            if (a_src) {
--              iop_a_src = a_src->data.ptr + a_src->meta.ri;
--            }
--            if (status.repr) {
--              goto suspend;
--            }
--            break;
--          }
--        } else if (v_class == 12u) {
--          if (self->private_impl.f_quirks[11u] || self->private_impl.f_quirks[12u]) {
--            if (a_dst) {
--              a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--            }
--            if (a_src) {
--              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--            }
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(23);
--            status = wuffs_json__decoder__decode_comment(self, a_dst, a_src);
--            if (a_dst) {
--              iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
--            }
--            if (a_src) {
--              iop_a_src = a_src->data.ptr + a_src->meta.ri;
--            }
--            if (status.repr) {
--              goto suspend;
--            }
--            if (self->private_impl.f_comment_type > 0u) {
--              goto label__outer__continue;
-+              num_bits_1 += 8u;
-+              *scratch |= ((uint64_t)(num_bits_1));
-             }
-           }
-+          self->private_impl.f_dict_id_want = t_1;
-         }
--        status = wuffs_base__make_status(wuffs_json__error__bad_input);
-+        status = wuffs_base__make_status(wuffs_zlib__note__dictionary_required);
-+        goto ok;
-+      } else if (self->private_impl.f_got_dictionary) {
-+        status = wuffs_base__make_status(wuffs_zlib__error__incorrect_dictionary);
-         goto exit;
-       }
--      if (v_depth == 0u) {
--        break;
-+    } else if (self->private_impl.f_dict_id_have != self->private_impl.f_dict_id_want) {
-+      if (self->private_impl.f_got_dictionary) {
-+        status = wuffs_base__make_status(wuffs_zlib__error__incorrect_dictionary);
-+        goto exit;
-       }
--      v_expect = v_expect_after_value;
-+      status = wuffs_base__make_status(wuffs_zlib__note__dictionary_required);
-+      goto ok;
-     }
--    label__outer__break:;
--    if (self->private_impl.f_quirks[17u] || self->private_impl.f_quirks[18u]) {
--      if (a_dst) {
--        a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+    self->private_impl.f_header_complete = true;
-+    while (true) {
-+      v_mark = ((uint64_t)(iop_a_dst - io0_a_dst));
-+      {
-+        if (a_dst) {
-+          a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+        }
-+        if (a_src) {
-+          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+        }
-+        wuffs_base__status t_2 = wuffs_deflate__decoder__transform_io(&self->private_data.f_flate, a_dst, a_src, a_workbuf);
-+        v_status = t_2;
-+        if (a_dst) {
-+          iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
-+        }
-+        if (a_src) {
-+          iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+        }
-       }
--      if (a_src) {
--        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      if ( ! self->private_impl.f_ignore_checksum &&  ! self->private_impl.f_quirks[0u]) {
-+        v_checksum_have = wuffs_adler32__hasher__update_u32(&self->private_data.f_checksum, wuffs_private_impl__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
-       }
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(24);
--      status = wuffs_json__decoder__decode_trailer(self, a_dst, a_src);
--      if (a_dst) {
--        iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
-+      if (wuffs_base__status__is_ok(&v_status)) {
-+        break;
-       }
--      if (a_src) {
--        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
-+    }
-+    if ( ! self->private_impl.f_quirks[0u]) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+        uint32_t t_3;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+          t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+          iop_a_src += 4;
-+        } else {
-+          self->private_data.s_do_transform_io.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+            uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu));
-+            *scratch >>= 8;
-+            *scratch <<= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
-+            if (num_bits_3 == 24) {
-+              t_3 = ((uint32_t)(*scratch >> 32));
-+              break;
-+            }
-+            num_bits_3 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_3));
-+          }
-+        }
-+        v_checksum_want = t_3;
-       }
--      if (status.repr) {
--        goto suspend;
-+      if ( ! self->private_impl.f_ignore_checksum && (v_checksum_have != v_checksum_want)) {
-+        status = wuffs_base__make_status(wuffs_zlib__error__bad_checksum);
-+        goto exit;
-       }
-     }
--    self->private_impl.f_end_of_data = true;
- 
--    ok:
--    self->private_impl.p_decode_tokens[0] = 0;
--    goto exit;
--  }
-+    ok:
-+    self->private_impl.p_do_transform_io = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_do_transform_io.v_checksum_have = v_checksum_have;
-+
-+  goto exit;
-+  exit:
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+  }
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ZLIB)
-+
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG)
-+
-+// ---------------- Status Codes Implementations
-+
-+const char wuffs_png__error__bad_animation_sequence_number[] = "#png: bad animation sequence number";
-+const char wuffs_png__error__bad_checksum[] = "#png: bad checksum";
-+const char wuffs_png__error__bad_chunk[] = "#png: bad chunk";
-+const char wuffs_png__error__bad_filter[] = "#png: bad filter";
-+const char wuffs_png__error__bad_header[] = "#png: bad header";
-+const char wuffs_png__error__bad_text_chunk_not_latin_1[] = "#png: bad text chunk (not Latin-1)";
-+const char wuffs_png__error__missing_palette[] = "#png: missing palette";
-+const char wuffs_png__error__truncated_input[] = "#png: truncated input";
-+const char wuffs_png__error__unsupported_cgbi_extension[] = "#png: unsupported CgBI extension";
-+const char wuffs_png__error__unsupported_png_compression_method[] = "#png: unsupported PNG compression method";
-+const char wuffs_png__error__unsupported_png_file[] = "#png: unsupported PNG file";
-+const char wuffs_png__error__internal_error_inconsistent_i_o[] = "#png: internal error: inconsistent I/O";
-+const char wuffs_png__error__internal_error_inconsistent_chunk_type[] = "#png: internal error: inconsistent chunk type";
-+const char wuffs_png__error__internal_error_inconsistent_workbuf_length[] = "#png: internal error: inconsistent workbuf length";
-+const char wuffs_png__error__internal_error_zlib_decoder_did_not_exhaust_its_input[] = "#png: internal error: zlib decoder did not exhaust its input";
-+
-+// ---------------- Private Consts
-+
-+#define WUFFS_PNG__ANCILLARY_BIT 32u
-+
-+static const uint8_t
-+WUFFS_PNG__INTERLACING[8][6] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  {
-+    0u, 0u, 0u, 0u, 0u, 0u,
-+  }, {
-+    3u, 7u, 0u, 3u, 7u, 0u,
-+  }, {
-+    3u, 3u, 4u, 3u, 7u, 0u,
-+  }, {
-+    2u, 3u, 0u, 3u, 3u, 4u,
-+  }, {
-+    2u, 1u, 2u, 2u, 3u, 0u,
-+  }, {
-+    1u, 1u, 0u, 2u, 1u, 2u,
-+  }, {
-+    1u, 0u, 1u, 1u, 1u, 0u,
-+  }, {
-+    0u, 0u, 0u, 1u, 0u, 1u,
-+  },
-+};
-+
-+static const uint8_t
-+WUFFS_PNG__LOW_BIT_DEPTH_MULTIPLIERS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 255u, 85u, 0u, 17u, 0u, 0u, 0u,
-+};
-+
-+static const uint8_t
-+WUFFS_PNG__LOW_BIT_DEPTH_NUM_PACKS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 8u, 4u, 0u, 2u, 0u, 0u, 0u,
-+};
-+
-+static const uint8_t
-+WUFFS_PNG__NUM_CHANNELS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  1u, 0u, 3u, 1u, 2u, 0u, 4u, 0u,
-+};
-+
-+static const uint16_t
-+WUFFS_PNG__LATIN_1[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  32u, 33u, 34u, 35u, 36u, 37u, 38u, 39u,
-+  40u, 41u, 42u, 43u, 44u, 45u, 46u, 47u,
-+  48u, 49u, 50u, 51u, 52u, 53u, 54u, 55u,
-+  56u, 57u, 58u, 59u, 60u, 61u, 62u, 63u,
-+  64u, 65u, 66u, 67u, 68u, 69u, 70u, 71u,
-+  72u, 73u, 74u, 75u, 76u, 77u, 78u, 79u,
-+  80u, 81u, 82u, 83u, 84u, 85u, 86u, 87u,
-+  88u, 89u, 90u, 91u, 92u, 93u, 94u, 95u,
-+  96u, 97u, 98u, 99u, 100u, 101u, 102u, 103u,
-+  104u, 105u, 106u, 107u, 108u, 109u, 110u, 111u,
-+  112u, 113u, 114u, 115u, 116u, 117u, 118u, 119u,
-+  120u, 121u, 122u, 123u, 124u, 125u, 126u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 41410u, 41666u, 41922u, 42178u, 42434u, 42690u, 42946u,
-+  43202u, 43458u, 43714u, 43970u, 44226u, 44482u, 44738u, 44994u,
-+  45250u, 45506u, 45762u, 46018u, 46274u, 46530u, 46786u, 47042u,
-+  47298u, 47554u, 47810u, 48066u, 48322u, 48578u, 48834u, 49090u,
-+  32963u, 33219u, 33475u, 33731u, 33987u, 34243u, 34499u, 34755u,
-+  35011u, 35267u, 35523u, 35779u, 36035u, 36291u, 36547u, 36803u,
-+  37059u, 37315u, 37571u, 37827u, 38083u, 38339u, 38595u, 38851u,
-+  39107u, 39363u, 39619u, 39875u, 40131u, 40387u, 40643u, 40899u,
-+  41155u, 41411u, 41667u, 41923u, 42179u, 42435u, 42691u, 42947u,
-+  43203u, 43459u, 43715u, 43971u, 44227u, 44483u, 44739u, 44995u,
-+  45251u, 45507u, 45763u, 46019u, 46275u, 46531u, 46787u, 47043u,
-+  47299u, 47555u, 47811u, 48067u, 48323u, 48579u, 48835u, 49091u,
-+};
-+
-+// ---------------- Private Initializer Prototypes
-+
-+// ---------------- Private Function Prototypes
-+
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_1_distance_4_arm_neon(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr);
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
-+
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_3_distance_4_arm_neon(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev);
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
-+
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_4_distance_3_arm_neon(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev);
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
-+
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_4_distance_4_arm_neon(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev);
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_1(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_1__choosy_default(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_1_distance_3_fallback(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_1_distance_4_fallback(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_2(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev);
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_tokens[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
--  self->private_data.s_decode_tokens[0].v_depth = v_depth;
--  self->private_data.s_decode_tokens[0].v_expect = v_expect;
--  self->private_data.s_decode_tokens[0].v_expect_after_value = v_expect_after_value;
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_3(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev);
- 
--  goto exit;
--  exit:
--  if (a_dst && a_dst->data.ptr) {
--    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--  }
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_3__choosy_default(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev);
- 
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--  }
--  return status;
--}
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_3_distance_3_fallback(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev);
- 
--// -------- func json.decoder.decode_number
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_3_distance_4_fallback(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev);
- 
- WUFFS_BASE__GENERATED_C_CODE
--static uint32_t
--wuffs_json__decoder__decode_number(
--    wuffs_json__decoder* self,
--    wuffs_base__io_buffer* a_src) {
--  uint8_t v_c = 0;
--  uint32_t v_n = 0;
--  uint32_t v_floating_point = 0;
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_4(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev);
- 
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_4__choosy_default(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev);
- 
--  do {
--    v_n = 0u;
--    if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--      if ( ! (a_src && a_src->meta.closed)) {
--        v_n |= 768u;
--      }
--      break;
--    }
--    v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--    if (v_c != 45u) {
--    } else {
--      v_n += 1u;
--      iop_a_src += 1u;
--      if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--        if ( ! (a_src && a_src->meta.closed)) {
--          v_n |= 768u;
--        }
--        v_n |= 256u;
--        break;
--      }
--      v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--    }
--    if (v_c == 48u) {
--      v_n += 1u;
--      iop_a_src += 1u;
--    } else {
--      if (a_src) {
--        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--      }
--      v_n = wuffs_json__decoder__decode_digits(self, a_src, v_n);
--      if (a_src) {
--        iop_a_src = a_src->data.ptr + a_src->meta.ri;
--      }
--      if (v_n > 99u) {
--        break;
--      }
--    }
--    if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--      if ( ! (a_src && a_src->meta.closed)) {
--        v_n |= 768u;
--      }
--      break;
--    }
--    v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--    if (v_c != 46u) {
--    } else {
--      if (v_n >= 99u) {
--        v_n |= 512u;
--        break;
--      }
--      v_n += 1u;
--      iop_a_src += 1u;
--      v_floating_point = 128u;
--      if (a_src) {
--        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--      }
--      v_n = wuffs_json__decoder__decode_digits(self, a_src, v_n);
--      if (a_src) {
--        iop_a_src = a_src->data.ptr + a_src->meta.ri;
--      }
--      if (v_n > 99u) {
--        break;
--      }
--      if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--        if ( ! (a_src && a_src->meta.closed)) {
--          v_n |= 768u;
--        }
--        break;
--      }
--      v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--    }
--    if ((v_c != 69u) && (v_c != 101u)) {
--      break;
--    }
--    if (v_n >= 99u) {
--      v_n |= 512u;
--      break;
--    }
--    v_n += 1u;
--    iop_a_src += 1u;
--    v_floating_point = 128u;
--    if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--      if ( ! (a_src && a_src->meta.closed)) {
--        v_n |= 768u;
--      }
--      v_n |= 256u;
--      break;
--    }
--    v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--    if ((v_c != 43u) && (v_c != 45u)) {
--    } else {
--      if (v_n >= 99u) {
--        v_n |= 512u;
--        break;
--      }
--      v_n += 1u;
--      iop_a_src += 1u;
--    }
--    if (a_src) {
--      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--    }
--    v_n = wuffs_json__decoder__decode_digits(self, a_src, v_n);
--    if (a_src) {
--      iop_a_src = a_src->data.ptr + a_src->meta.ri;
--    }
--  } while (0);
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
--  return (v_n | v_floating_point);
--}
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_4_distance_3_fallback(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev);
- 
--// -------- func json.decoder.decode_digits
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_4_distance_4_fallback(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev);
- 
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
- WUFFS_BASE__GENERATED_C_CODE
--static uint32_t
--wuffs_json__decoder__decode_digits(
--    wuffs_json__decoder* self,
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_1_distance_4_x86_sse42(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr);
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_3_distance_4_x86_sse42(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev);
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_4_distance_3_x86_sse42(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev);
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_4_distance_4_x86_sse42(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev);
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_png__decoder__do_decode_image_config(
-+    wuffs_png__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_png__decoder__decode_ihdr(
-+    wuffs_png__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__assign_filter_distance(
-+    wuffs_png__decoder* self);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint64_t
-+wuffs_png__decoder__calculate_bytes_per_row(
-+    const wuffs_png__decoder* self,
-+    uint32_t a_width);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__choose_filter_implementations(
-+    wuffs_png__decoder* self);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_png__decoder__decode_other_chunk(
-+    wuffs_png__decoder* self,
-     wuffs_base__io_buffer* a_src,
--    uint32_t a_n) {
--  uint8_t v_c = 0;
--  uint32_t v_n = 0;
-+    bool a_framy);
- 
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_png__decoder__decode_actl(
-+    wuffs_png__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_png__decoder__decode_chrm(
-+    wuffs_png__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_png__decoder__decode_exif(
-+    wuffs_png__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_png__decoder__decode_fctl(
-+    wuffs_png__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_png__decoder__decode_gama(
-+    wuffs_png__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_png__decoder__decode_iccp(
-+    wuffs_png__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_png__decoder__decode_plte(
-+    wuffs_png__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_png__decoder__decode_srgb(
-+    wuffs_png__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_png__decoder__decode_trns(
-+    wuffs_png__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_png__decoder__do_decode_frame_config(
-+    wuffs_png__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_png__decoder__skip_frame(
-+    wuffs_png__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_png__decoder__do_decode_frame(
-+    wuffs_png__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_png__decoder__decode_pass(
-+    wuffs_png__decoder* self,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_png__decoder__do_tell_me_more(
-+    wuffs_png__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__more_information* a_minfo,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_png__decoder__filter_and_swizzle(
-+    wuffs_png__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__slice_u8 a_workbuf);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_png__decoder__filter_and_swizzle__choosy_default(
-+    wuffs_png__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__slice_u8 a_workbuf);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_png__decoder__filter_and_swizzle_tricky(
-+    wuffs_png__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__slice_u8 a_workbuf);
-+
-+// ---------------- VTables
-+
-+const wuffs_base__image_decoder__func_ptrs
-+wuffs_png__decoder__func_ptrs_for__wuffs_base__image_decoder = {
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__pixel_buffer*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__pixel_blend,
-+      wuffs_base__slice_u8,
-+      wuffs_base__decode_frame_options*))(&wuffs_png__decoder__decode_frame),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__frame_config*,
-+      wuffs_base__io_buffer*))(&wuffs_png__decoder__decode_frame_config),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__image_config*,
-+      wuffs_base__io_buffer*))(&wuffs_png__decoder__decode_image_config),
-+  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_png__decoder__frame_dirty_rect),
-+  (uint64_t(*)(const void*,
-+      uint32_t))(&wuffs_png__decoder__get_quirk),
-+  (uint32_t(*)(const void*))(&wuffs_png__decoder__num_animation_loops),
-+  (uint64_t(*)(const void*))(&wuffs_png__decoder__num_decoded_frame_configs),
-+  (uint64_t(*)(const void*))(&wuffs_png__decoder__num_decoded_frames),
-+  (wuffs_base__status(*)(void*,
-+      uint64_t,
-+      uint64_t))(&wuffs_png__decoder__restart_frame),
-+  (wuffs_base__status(*)(void*,
-+      uint32_t,
-+      uint64_t))(&wuffs_png__decoder__set_quirk),
-+  (wuffs_base__empty_struct(*)(void*,
-+      uint32_t,
-+      bool))(&wuffs_png__decoder__set_report_metadata),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__more_information*,
-+      wuffs_base__io_buffer*))(&wuffs_png__decoder__tell_me_more),
-+  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_png__decoder__workbuf_len),
-+};
-+
-+// ---------------- Initializer Implementations
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_png__decoder__initialize(
-+    wuffs_png__decoder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options){
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (sizeof(*self) != sizeof_star_self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  }
-+  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
-+      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-   }
- 
--  v_n = a_n;
--  while (true) {
--    if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--      if ( ! (a_src && a_src->meta.closed)) {
--        v_n |= 768u;
--      }
--      break;
-+  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
-+    // The whole point of this if-check is to detect an uninitialized *self.
-+    // We disable the warning on GCC. Clang-5.0 does not have this warning.
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+#endif
-+    if (self->private_impl.magic != 0) {
-+      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-     }
--    v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--    if (0u == WUFFS_JSON__LUT_DECIMAL_DIGITS[v_c]) {
--      break;
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+  } else {
-+    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
-+      memset(self, 0, sizeof(*self));
-+      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-+    } else {
-+      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-     }
--    if (v_n >= 99u) {
--      v_n |= 512u;
--      break;
-+  }
-+
-+  self->private_impl.choosy_filter_1 = &wuffs_png__decoder__filter_1__choosy_default;
-+  self->private_impl.choosy_filter_3 = &wuffs_png__decoder__filter_3__choosy_default;
-+  self->private_impl.choosy_filter_4 = &wuffs_png__decoder__filter_4__choosy_default;
-+  self->private_impl.choosy_filter_and_swizzle = &wuffs_png__decoder__filter_and_swizzle__choosy_default;
-+
-+  {
-+    wuffs_base__status z = wuffs_crc32__ieee_hasher__initialize(
-+        &self->private_data.f_crc32, sizeof(self->private_data.f_crc32), WUFFS_VERSION, options);
-+    if (z.repr) {
-+      return z;
-     }
--    v_n += 1u;
--    iop_a_src += 1u;
-   }
--  if (v_n == a_n) {
--    v_n |= 256u;
-+  {
-+    wuffs_base__status z = wuffs_zlib__decoder__initialize(
-+        &self->private_data.f_zlib, sizeof(self->private_data.f_zlib), WUFFS_VERSION, options);
-+    if (z.repr) {
-+      return z;
-+    }
-   }
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  self->private_impl.magic = WUFFS_BASE__MAGIC;
-+  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
-+      wuffs_base__image_decoder__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
-+      (const void*)(&wuffs_png__decoder__func_ptrs_for__wuffs_base__image_decoder);
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+wuffs_png__decoder*
-+wuffs_png__decoder__alloc(void) {
-+  wuffs_png__decoder* x =
-+      (wuffs_png__decoder*)(calloc(1, sizeof(wuffs_png__decoder)));
-+  if (!x) {
-+    return NULL;
-   }
--  return v_n;
-+  if (wuffs_png__decoder__initialize(
-+      x, sizeof(wuffs_png__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+    free(x);
-+    return NULL;
-+  }
-+  return x;
-+}
-+
-+size_t
-+sizeof__wuffs_png__decoder(void) {
-+  return sizeof(wuffs_png__decoder);
- }
- 
--// -------- func json.decoder.decode_leading
-+// ---------------- Function Implementations
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_json__decoder__decode_leading(
--    wuffs_json__decoder* self,
--    wuffs_base__token_buffer* a_dst,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+// ‼ WUFFS MULTI-FILE SECTION +arm_neon
-+// -------- func png.decoder.filter_1_distance_4_arm_neon
- 
--  uint8_t v_c = 0;
--  uint32_t v_u = 0;
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_1_distance_4_arm_neon(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr) {
-+  wuffs_base__slice_u8 v_curr = {0};
-+  uint8x8_t v_fa = {0};
-+  uint8x8_t v_fx = {0};
- 
--  wuffs_base__token* iop_a_dst = NULL;
--  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_dst && a_dst->data.ptr) {
--    io0_a_dst = a_dst->data.ptr;
--    io1_a_dst = io0_a_dst + a_dst->meta.wi;
--    iop_a_dst = io1_a_dst;
--    io2_a_dst = io0_a_dst + a_dst->data.len;
--    if (a_dst->meta.closed) {
--      io2_a_dst = iop_a_dst;
-+  {
-+    wuffs_base__slice_u8 i_slice_curr = a_curr;
-+    v_curr.ptr = i_slice_curr.ptr;
-+    v_curr.len = 4;
-+    const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8));
-+    while (v_curr.ptr < i_end0_curr) {
-+      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+      v_fx = vadd_u8(v_fx, v_fa);
-+      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
-+      v_fa = v_fx;
-+      v_curr.ptr += 4;
-+      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+      v_fx = vadd_u8(v_fx, v_fa);
-+      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
-+      v_fa = v_fx;
-+      v_curr.ptr += 4;
-     }
-+    v_curr.len = 4;
-+    const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
-+    while (v_curr.ptr < i_end1_curr) {
-+      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+      v_fx = vadd_u8(v_fx, v_fa);
-+      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
-+      v_fa = v_fx;
-+      v_curr.ptr += 4;
-+    }
-+    v_curr.len = 0;
-   }
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
-+  return wuffs_base__make_empty_struct();
-+}
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
-+// ‼ WUFFS MULTI-FILE SECTION -arm_neon
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_leading[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+// ‼ WUFFS MULTI-FILE SECTION +arm_neon
-+// -------- func png.decoder.filter_3_distance_4_arm_neon
- 
--    self->private_impl.f_allow_leading_ars = self->private_impl.f_quirks[15u];
--    self->private_impl.f_allow_leading_ubom = self->private_impl.f_quirks[16u];
--    while (self->private_impl.f_allow_leading_ars || self->private_impl.f_allow_leading_ubom) {
--      if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
--        continue;
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_3_distance_4_arm_neon(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev) {
-+  wuffs_base__slice_u8 v_curr = {0};
-+  wuffs_base__slice_u8 v_prev = {0};
-+  uint8x8_t v_fa = {0};
-+  uint8x8_t v_fb = {0};
-+  uint8x8_t v_fx = {0};
-+
-+  if (((uint64_t)(a_prev.len)) == 0u) {
-+    {
-+      wuffs_base__slice_u8 i_slice_curr = a_curr;
-+      v_curr.ptr = i_slice_curr.ptr;
-+      v_curr.len = 4;
-+      const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8));
-+      while (v_curr.ptr < i_end0_curr) {
-+        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
-+        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
-+        v_fa = v_fx;
-+        v_curr.ptr += 4;
-+        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
-+        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
-+        v_fa = v_fx;
-+        v_curr.ptr += 4;
-       }
--      if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--        if (a_src && a_src->meta.closed) {
--          break;
--        }
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
--        continue;
-+      v_curr.len = 4;
-+      const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
-+      while (v_curr.ptr < i_end1_curr) {
-+        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
-+        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
-+        v_fa = v_fx;
-+        v_curr.ptr += 4;
-       }
--      v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--      if ((v_c == 30u) && self->private_impl.f_allow_leading_ars) {
--        self->private_impl.f_allow_leading_ars = false;
--        iop_a_src += 1u;
--        *iop_a_dst++ = wuffs_base__make_token(
--            (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--            (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--        continue;
--      } else if ((v_c == 239u) && self->private_impl.f_allow_leading_ubom) {
--        if (((uint64_t)(io2_a_src - iop_a_src)) < 3u) {
--          if (a_src && a_src->meta.closed) {
--            break;
--          }
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
--          continue;
--        }
--        v_u = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
--        if (v_u == 12565487u) {
--          self->private_impl.f_allow_leading_ubom = false;
--          iop_a_src += 3u;
--          *iop_a_dst++ = wuffs_base__make_token(
--              (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--              (((uint64_t)(3u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--          continue;
--        }
-+      v_curr.len = 0;
-+    }
-+  } else {
-+    {
-+      wuffs_base__slice_u8 i_slice_curr = a_curr;
-+      v_curr.ptr = i_slice_curr.ptr;
-+      wuffs_base__slice_u8 i_slice_prev = a_prev;
-+      v_prev.ptr = i_slice_prev.ptr;
-+      i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
-+      v_curr.len = 4;
-+      v_prev.len = 4;
-+      const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8));
-+      while (v_curr.ptr < i_end0_curr) {
-+        v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
-+        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
-+        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
-+        v_fa = v_fx;
-+        v_curr.ptr += 4;
-+        v_prev.ptr += 4;
-+        v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
-+        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
-+        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
-+        v_fa = v_fx;
-+        v_curr.ptr += 4;
-+        v_prev.ptr += 4;
-       }
--      break;
-+      v_curr.len = 4;
-+      v_prev.len = 4;
-+      const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
-+      while (v_curr.ptr < i_end1_curr) {
-+        v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
-+        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
-+        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
-+        v_fa = v_fx;
-+        v_curr.ptr += 4;
-+        v_prev.ptr += 4;
-+      }
-+      v_curr.len = 0;
-+      v_prev.len = 0;
-     }
--
--    ok:
--    self->private_impl.p_decode_leading[0] = 0;
--    goto exit;
--  }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_leading[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--
--  goto exit;
--  exit:
--  if (a_dst && a_dst->data.ptr) {
--    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--  }
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
--
--  return status;
-+  return wuffs_base__make_empty_struct();
- }
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
-+// ‼ WUFFS MULTI-FILE SECTION -arm_neon
- 
--// -------- func json.decoder.decode_comment
-+// ‼ WUFFS MULTI-FILE SECTION +arm_neon
-+// -------- func png.decoder.filter_4_distance_3_arm_neon
- 
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_json__decoder__decode_comment(
--    wuffs_json__decoder* self,
--    wuffs_base__token_buffer* a_dst,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  uint8_t v_c = 0;
--  uint16_t v_c2 = 0;
--  uint32_t v_length = 0;
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_4_distance_3_arm_neon(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev) {
-+  wuffs_base__slice_u8 v_curr = {0};
-+  wuffs_base__slice_u8 v_prev = {0};
-+  uint8x8_t v_fa = {0};
-+  uint8x8_t v_fb = {0};
-+  uint8x8_t v_fc = {0};
-+  uint8x8_t v_fx = {0};
-+  uint16x8_t v_fafb = {0};
-+  uint16x8_t v_fcfc = {0};
-+  uint16x8_t v_pa = {0};
-+  uint16x8_t v_pb = {0};
-+  uint16x8_t v_pc = {0};
-+  uint16x8_t v_cmpab = {0};
-+  uint16x8_t v_cmpac = {0};
-+  uint8x8_t v_picka = {0};
-+  uint8x8_t v_pickb = {0};
- 
--  wuffs_base__token* iop_a_dst = NULL;
--  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_dst && a_dst->data.ptr) {
--    io0_a_dst = a_dst->data.ptr;
--    io1_a_dst = io0_a_dst + a_dst->meta.wi;
--    iop_a_dst = io1_a_dst;
--    io2_a_dst = io0_a_dst + a_dst->data.len;
--    if (a_dst->meta.closed) {
--      io2_a_dst = iop_a_dst;
-+  {
-+    wuffs_base__slice_u8 i_slice_curr = a_curr;
-+    v_curr.ptr = i_slice_curr.ptr;
-+    wuffs_base__slice_u8 i_slice_prev = a_prev;
-+    v_prev.ptr = i_slice_prev.ptr;
-+    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
-+    v_curr.len = 4;
-+    v_prev.len = 4;
-+    const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, wuffs_private_impl__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 7, 6));
-+    while (v_curr.ptr < i_end0_curr) {
-+      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
-+      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+      v_fafb = vaddl_u8(v_fa, v_fb);
-+      v_fcfc = vaddl_u8(v_fc, v_fc);
-+      v_pa = vabdl_u8(v_fb, v_fc);
-+      v_pb = vabdl_u8(v_fa, v_fc);
-+      v_pc = vabdq_u16(v_fafb, v_fcfc);
-+      v_cmpab = vcleq_u16(v_pa, v_pb);
-+      v_cmpac = vcleq_u16(v_pa, v_pc);
-+      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
-+      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
-+      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
-+      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
-+      v_fc = v_fb;
-+      v_fa = v_fx;
-+      v_curr.ptr += 3;
-+      v_prev.ptr += 3;
-+      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
-+      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+      v_fafb = vaddl_u8(v_fa, v_fb);
-+      v_fcfc = vaddl_u8(v_fc, v_fc);
-+      v_pa = vabdl_u8(v_fb, v_fc);
-+      v_pb = vabdl_u8(v_fa, v_fc);
-+      v_pc = vabdq_u16(v_fafb, v_fcfc);
-+      v_cmpab = vcleq_u16(v_pa, v_pb);
-+      v_cmpac = vcleq_u16(v_pa, v_pc);
-+      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
-+      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
-+      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
-+      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
-+      v_fc = v_fb;
-+      v_fa = v_fx;
-+      v_curr.ptr += 3;
-+      v_prev.ptr += 3;
-     }
-+    v_curr.len = 4;
-+    v_prev.len = 4;
-+    const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, wuffs_private_impl__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 4, 3));
-+    while (v_curr.ptr < i_end1_curr) {
-+      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
-+      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+      v_fafb = vaddl_u8(v_fa, v_fb);
-+      v_fcfc = vaddl_u8(v_fc, v_fc);
-+      v_pa = vabdl_u8(v_fb, v_fc);
-+      v_pb = vabdl_u8(v_fa, v_fc);
-+      v_pc = vabdq_u16(v_fafb, v_fcfc);
-+      v_cmpab = vcleq_u16(v_pa, v_pb);
-+      v_cmpac = vcleq_u16(v_pa, v_pc);
-+      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
-+      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
-+      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
-+      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
-+      v_fc = v_fb;
-+      v_fa = v_fx;
-+      v_curr.ptr += 3;
-+      v_prev.ptr += 3;
-+    }
-+    v_curr.len = 3;
-+    v_prev.len = 3;
-+    const uint8_t* i_end2_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3));
-+    while (v_curr.ptr < i_end2_curr) {
-+      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u24le__no_bounds_check(v_prev.ptr)));
-+      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u24le__no_bounds_check(v_curr.ptr)));
-+      v_fafb = vaddl_u8(v_fa, v_fb);
-+      v_fcfc = vaddl_u8(v_fc, v_fc);
-+      v_pa = vabdl_u8(v_fb, v_fc);
-+      v_pb = vabdl_u8(v_fa, v_fc);
-+      v_pc = vabdq_u16(v_fafb, v_fcfc);
-+      v_cmpab = vcleq_u16(v_pa, v_pb);
-+      v_cmpac = vcleq_u16(v_pa, v_pc);
-+      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
-+      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
-+      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
-+      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
-+      v_curr.ptr += 3;
-+      v_prev.ptr += 3;
-+    }
-+    v_curr.len = 0;
-+    v_prev.len = 0;
-   }
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
-+  return wuffs_base__make_empty_struct();
-+}
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
-+// ‼ WUFFS MULTI-FILE SECTION -arm_neon
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_comment[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+// ‼ WUFFS MULTI-FILE SECTION +arm_neon
-+// -------- func png.decoder.filter_4_distance_4_arm_neon
- 
--    self->private_impl.f_comment_type = 0u;
--    while ((((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) || (((uint64_t)(io2_a_src - iop_a_src)) <= 1u)) {
--      if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
--        continue;
--      }
--      if (a_src && a_src->meta.closed) {
--        status = wuffs_base__make_status(NULL);
--        goto ok;
--      }
--      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
--    }
--    v_c2 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
--    if ((v_c2 == 10799u) && self->private_impl.f_quirks[11u]) {
--      iop_a_src += 2u;
--      v_length = 2u;
--      while (true) {
--        if (((uint64_t)(io2_a_src - iop_a_src)) <= 1u) {
--          if (v_length > 0u) {
--            *iop_a_dst++ = wuffs_base__make_token(
--                (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--          }
--          if (a_src && a_src->meta.closed) {
--            status = wuffs_base__make_status(wuffs_json__error__bad_input);
--            goto exit;
--          }
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
--          while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
--          }
--          v_length = 0u;
--          continue;
--        }
--        v_c2 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
--        if (v_c2 == 12074u) {
--          iop_a_src += 2u;
--          *iop_a_dst++ = wuffs_base__make_token(
--              (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--              (((uint64_t)((v_length + 2u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--          self->private_impl.f_comment_type = 1u;
--          status = wuffs_base__make_status(NULL);
--          goto ok;
--        }
--        iop_a_src += 1u;
--        if (v_length >= 65533u) {
--          *iop_a_dst++ = wuffs_base__make_token(
--              (((uint64_t)(2u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--              (((uint64_t)((v_length + 1u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--          while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
--          }
--          v_length = 0u;
--          continue;
--        }
--        v_length += 1u;
--      }
--    } else if ((v_c2 == 12079u) && self->private_impl.f_quirks[12u]) {
--      iop_a_src += 2u;
--      v_length = 2u;
--      while (true) {
--        if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--          if (a_src && a_src->meta.closed) {
--            *iop_a_dst++ = wuffs_base__make_token(
--                (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--            self->private_impl.f_comment_type = 2u;
--            status = wuffs_base__make_status(NULL);
--            goto ok;
--          } else if (v_length > 0u) {
--            *iop_a_dst++ = wuffs_base__make_token(
--                (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--                (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--          }
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
--          while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
--          }
--          v_length = 0u;
--          continue;
--        }
--        v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--        if (v_c == 10u) {
--          *iop_a_dst++ = wuffs_base__make_token(
--              (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--              (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--          self->private_impl.f_comment_type = 2u;
--          status = wuffs_base__make_status(NULL);
--          goto ok;
--        }
--        iop_a_src += 1u;
--        if (v_length >= 65533u) {
--          *iop_a_dst++ = wuffs_base__make_token(
--              (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--              (((uint64_t)(1u)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
--              (((uint64_t)((v_length + 1u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--          while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
--          }
--          v_length = 0u;
--          continue;
--        }
--        v_length += 1u;
--      }
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_4_distance_4_arm_neon(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev) {
-+  wuffs_base__slice_u8 v_curr = {0};
-+  wuffs_base__slice_u8 v_prev = {0};
-+  uint8x8_t v_fa = {0};
-+  uint8x8_t v_fb = {0};
-+  uint8x8_t v_fc = {0};
-+  uint8x8_t v_fx = {0};
-+  uint16x8_t v_fafb = {0};
-+  uint16x8_t v_fcfc = {0};
-+  uint16x8_t v_pa = {0};
-+  uint16x8_t v_pb = {0};
-+  uint16x8_t v_pc = {0};
-+  uint16x8_t v_cmpab = {0};
-+  uint16x8_t v_cmpac = {0};
-+  uint8x8_t v_picka = {0};
-+  uint8x8_t v_pickb = {0};
-+
-+  {
-+    wuffs_base__slice_u8 i_slice_curr = a_curr;
-+    v_curr.ptr = i_slice_curr.ptr;
-+    wuffs_base__slice_u8 i_slice_prev = a_prev;
-+    v_prev.ptr = i_slice_prev.ptr;
-+    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
-+    v_curr.len = 4;
-+    v_prev.len = 4;
-+    const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8));
-+    while (v_curr.ptr < i_end0_curr) {
-+      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
-+      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+      v_fafb = vaddl_u8(v_fa, v_fb);
-+      v_fcfc = vaddl_u8(v_fc, v_fc);
-+      v_pa = vabdl_u8(v_fb, v_fc);
-+      v_pb = vabdl_u8(v_fa, v_fc);
-+      v_pc = vabdq_u16(v_fafb, v_fcfc);
-+      v_cmpab = vcleq_u16(v_pa, v_pb);
-+      v_cmpac = vcleq_u16(v_pa, v_pc);
-+      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
-+      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
-+      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
-+      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
-+      v_fc = v_fb;
-+      v_fa = v_fx;
-+      v_curr.ptr += 4;
-+      v_prev.ptr += 4;
-+      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
-+      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+      v_fafb = vaddl_u8(v_fa, v_fb);
-+      v_fcfc = vaddl_u8(v_fc, v_fc);
-+      v_pa = vabdl_u8(v_fb, v_fc);
-+      v_pb = vabdl_u8(v_fa, v_fc);
-+      v_pc = vabdq_u16(v_fafb, v_fcfc);
-+      v_cmpab = vcleq_u16(v_pa, v_pb);
-+      v_cmpac = vcleq_u16(v_pa, v_pc);
-+      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
-+      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
-+      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
-+      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
-+      v_fc = v_fb;
-+      v_fa = v_fx;
-+      v_curr.ptr += 4;
-+      v_prev.ptr += 4;
-     }
--
--    ok:
--    self->private_impl.p_decode_comment[0] = 0;
--    goto exit;
-+    v_curr.len = 4;
-+    v_prev.len = 4;
-+    const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
-+    while (v_curr.ptr < i_end1_curr) {
-+      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
-+      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+      v_fafb = vaddl_u8(v_fa, v_fb);
-+      v_fcfc = vaddl_u8(v_fc, v_fc);
-+      v_pa = vabdl_u8(v_fb, v_fc);
-+      v_pb = vabdl_u8(v_fa, v_fc);
-+      v_pc = vabdq_u16(v_fafb, v_fcfc);
-+      v_cmpab = vcleq_u16(v_pa, v_pb);
-+      v_cmpac = vcleq_u16(v_pa, v_pc);
-+      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
-+      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
-+      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
-+      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
-+      v_fc = v_fb;
-+      v_fa = v_fx;
-+      v_curr.ptr += 4;
-+      v_prev.ptr += 4;
-+    }
-+    v_curr.len = 0;
-+    v_prev.len = 0;
-   }
-+  return wuffs_base__make_empty_struct();
-+}
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
-+// ‼ WUFFS MULTI-FILE SECTION -arm_neon
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_comment[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+// -------- func png.decoder.filter_1
- 
--  goto exit;
--  exit:
--  if (a_dst && a_dst->data.ptr) {
--    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--  }
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_1(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr) {
-+  return (*self->private_impl.choosy_filter_1)(self, a_curr);
-+}
- 
--  return status;
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_1__choosy_default(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr) {
-+  uint64_t v_filter_distance = 0;
-+  uint8_t v_fa = 0;
-+  uint64_t v_i_start = 0;
-+  uint64_t v_i = 0;
-+
-+  v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance));
-+  v_i_start = 0u;
-+  while (v_i_start < v_filter_distance) {
-+    v_fa = 0u;
-+    v_i = v_i_start;
-+    while (v_i < ((uint64_t)(a_curr.len))) {
-+      a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + v_fa));
-+      v_fa = a_curr.ptr[v_i];
-+      v_i += v_filter_distance;
-+    }
-+    v_i_start += 1u;
-+  }
-+  return wuffs_base__make_empty_struct();
- }
- 
--// -------- func json.decoder.decode_inf_nan
-+// -------- func png.decoder.filter_1_distance_3_fallback
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_json__decoder__decode_inf_nan(
--    wuffs_json__decoder* self,
--    wuffs_base__token_buffer* a_dst,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  uint32_t v_c4 = 0;
--  uint32_t v_neg = 0;
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_1_distance_3_fallback(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr) {
-+  wuffs_base__slice_u8 v_curr = {0};
-+  uint8_t v_fa0 = 0;
-+  uint8_t v_fa1 = 0;
-+  uint8_t v_fa2 = 0;
- 
--  wuffs_base__token* iop_a_dst = NULL;
--  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_dst && a_dst->data.ptr) {
--    io0_a_dst = a_dst->data.ptr;
--    io1_a_dst = io0_a_dst + a_dst->meta.wi;
--    iop_a_dst = io1_a_dst;
--    io2_a_dst = io0_a_dst + a_dst->data.len;
--    if (a_dst->meta.closed) {
--      io2_a_dst = iop_a_dst;
-+  {
-+    wuffs_base__slice_u8 i_slice_curr = a_curr;
-+    v_curr.ptr = i_slice_curr.ptr;
-+    v_curr.len = 3;
-+    const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 6) * 6));
-+    while (v_curr.ptr < i_end0_curr) {
-+      v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0u]));
-+      v_curr.ptr[0u] = v_fa0;
-+      v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1u]));
-+      v_curr.ptr[1u] = v_fa1;
-+      v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2u]));
-+      v_curr.ptr[2u] = v_fa2;
-+      v_curr.ptr += 3;
-+      v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0u]));
-+      v_curr.ptr[0u] = v_fa0;
-+      v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1u]));
-+      v_curr.ptr[1u] = v_fa1;
-+      v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2u]));
-+      v_curr.ptr[2u] = v_fa2;
-+      v_curr.ptr += 3;
-     }
-+    v_curr.len = 3;
-+    const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3));
-+    while (v_curr.ptr < i_end1_curr) {
-+      v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0u]));
-+      v_curr.ptr[0u] = v_fa0;
-+      v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1u]));
-+      v_curr.ptr[1u] = v_fa1;
-+      v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2u]));
-+      v_curr.ptr[2u] = v_fa2;
-+      v_curr.ptr += 3;
-+    }
-+    v_curr.len = 0;
-   }
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
-+  return wuffs_base__make_empty_struct();
-+}
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_inf_nan[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+// -------- func png.decoder.filter_1_distance_4_fallback
- 
--    while (true) {
--      if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
--        continue;
--      }
--      if (((uint64_t)(io2_a_src - iop_a_src)) <= 2u) {
--        if (a_src && a_src->meta.closed) {
--          status = wuffs_base__make_status(wuffs_json__error__bad_input);
--          goto exit;
--        }
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
--        continue;
--      }
--      v_c4 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
--      if ((v_c4 | 2105376u) == 6712937u) {
--        if (((uint64_t)(io2_a_src - iop_a_src)) > 7u) {
--          if ((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) | 2314885530818453536u) == 8751735898823356009u) {
--            *iop_a_dst++ = wuffs_base__make_token(
--                (((uint64_t)(10485792u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                (((uint64_t)(8u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--            iop_a_src += 8u;
--            status = wuffs_base__make_status(NULL);
--            goto ok;
--          }
--        } else if ( ! (a_src && a_src->meta.closed)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
--          continue;
--        }
--        *iop_a_dst++ = wuffs_base__make_token(
--            (((uint64_t)(10485792u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--            (((uint64_t)(3u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--        iop_a_src += 3u;
--        status = wuffs_base__make_status(NULL);
--        goto ok;
--      } else if ((v_c4 | 2105376u) == 7233902u) {
--        *iop_a_dst++ = wuffs_base__make_token(
--            (((uint64_t)(10485888u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--            (((uint64_t)(3u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--        iop_a_src += 3u;
--        status = wuffs_base__make_status(NULL);
--        goto ok;
--      } else if ((v_c4 & 255u) == 43u) {
--        v_neg = 0u;
--      } else if ((v_c4 & 255u) == 45u) {
--        v_neg = 1u;
--      } else {
--        status = wuffs_base__make_status(wuffs_json__error__bad_input);
--        goto exit;
--      }
--      if (((uint64_t)(io2_a_src - iop_a_src)) <= 3u) {
--        if (a_src && a_src->meta.closed) {
--          status = wuffs_base__make_status(wuffs_json__error__bad_input);
--          goto exit;
--        }
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
--        continue;
--      }
--      v_c4 = (wuffs_base__peek_u32le__no_bounds_check(iop_a_src) >> 8u);
--      if ((v_c4 | 2105376u) == 6712937u) {
--        if (((uint64_t)(io2_a_src - iop_a_src)) > 8u) {
--          if ((wuffs_base__peek_u64le__no_bounds_check(iop_a_src + 1u) | 2314885530818453536u) == 8751735898823356009u) {
--            *iop_a_dst++ = wuffs_base__make_token(
--                (((uint64_t)((10485760u | (((uint32_t)(32u)) >> v_neg)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                (((uint64_t)(9u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--            iop_a_src += 9u;
--            status = wuffs_base__make_status(NULL);
--            goto ok;
--          }
--        } else if ( ! (a_src && a_src->meta.closed)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
--          continue;
--        }
--        *iop_a_dst++ = wuffs_base__make_token(
--            (((uint64_t)((10485760u | (((uint32_t)(32u)) >> v_neg)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--            (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--        iop_a_src += 4u;
--        status = wuffs_base__make_status(NULL);
--        goto ok;
--      } else if ((v_c4 | 2105376u) == 7233902u) {
--        *iop_a_dst++ = wuffs_base__make_token(
--            (((uint64_t)((10485760u | (((uint32_t)(128u)) >> v_neg)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--            (((uint64_t)(4u)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--        iop_a_src += 4u;
--        status = wuffs_base__make_status(NULL);
--        goto ok;
--      }
--      status = wuffs_base__make_status(wuffs_json__error__bad_input);
--      goto exit;
--    }
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_1_distance_4_fallback(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr) {
-+  wuffs_base__slice_u8 v_curr = {0};
-+  uint8_t v_fa0 = 0;
-+  uint8_t v_fa1 = 0;
-+  uint8_t v_fa2 = 0;
-+  uint8_t v_fa3 = 0;
- 
--    ok:
--    self->private_impl.p_decode_inf_nan[0] = 0;
--    goto exit;
-+  {
-+    wuffs_base__slice_u8 i_slice_curr = a_curr;
-+    v_curr.ptr = i_slice_curr.ptr;
-+    v_curr.len = 4;
-+    const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
-+    while (v_curr.ptr < i_end0_curr) {
-+      v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0u]));
-+      v_curr.ptr[0u] = v_fa0;
-+      v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1u]));
-+      v_curr.ptr[1u] = v_fa1;
-+      v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2u]));
-+      v_curr.ptr[2u] = v_fa2;
-+      v_fa3 = ((uint8_t)(v_fa3 + v_curr.ptr[3u]));
-+      v_curr.ptr[3u] = v_fa3;
-+      v_curr.ptr += 4;
-+    }
-+    v_curr.len = 0;
-   }
-+  return wuffs_base__make_empty_struct();
-+}
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_inf_nan[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+// -------- func png.decoder.filter_2
- 
--  goto exit;
--  exit:
--  if (a_dst && a_dst->data.ptr) {
--    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--  }
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_2(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev) {
-+  uint64_t v_n = 0;
-+  uint64_t v_i = 0;
- 
--  return status;
-+  v_n = wuffs_base__u64__min(((uint64_t)(a_curr.len)), ((uint64_t)(a_prev.len)));
-+  v_i = 0u;
-+  while (v_i < v_n) {
-+    a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + a_prev.ptr[v_i]));
-+    v_i += 1u;
-+  }
-+  return wuffs_base__make_empty_struct();
- }
- 
--// -------- func json.decoder.decode_trailer
-+// -------- func png.decoder.filter_3
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_json__decoder__decode_trailer(
--    wuffs_json__decoder* self,
--    wuffs_base__token_buffer* a_dst,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_3(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev) {
-+  return (*self->private_impl.choosy_filter_3)(self, a_curr, a_prev);
-+}
- 
--  uint8_t v_c = 0;
--  uint32_t v_whitespace_length = 0;
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_3__choosy_default(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev) {
-+  uint64_t v_filter_distance = 0;
-+  uint64_t v_n = 0;
-+  uint64_t v_i = 0;
- 
--  wuffs_base__token* iop_a_dst = NULL;
--  wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_dst && a_dst->data.ptr) {
--    io0_a_dst = a_dst->data.ptr;
--    io1_a_dst = io0_a_dst + a_dst->meta.wi;
--    iop_a_dst = io1_a_dst;
--    io2_a_dst = io0_a_dst + a_dst->data.len;
--    if (a_dst->meta.closed) {
--      io2_a_dst = iop_a_dst;
-+  v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance));
-+  if (((uint64_t)(a_prev.len)) == 0u) {
-+    v_i = v_filter_distance;
-+    while (v_i < ((uint64_t)(a_curr.len))) {
-+      a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + ((uint8_t)(a_curr.ptr[(v_i - v_filter_distance)] / 2u))));
-+      v_i += 1u;
-+    }
-+  } else {
-+    v_n = wuffs_base__u64__min(((uint64_t)(a_curr.len)), ((uint64_t)(a_prev.len)));
-+    v_i = 0u;
-+    while ((v_i < v_n) && (v_i < v_filter_distance)) {
-+      a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + ((uint8_t)(a_prev.ptr[v_i] / 2u))));
-+      v_i += 1u;
-+    }
-+    v_i = v_filter_distance;
-+    while (v_i < v_n) {
-+      a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + ((uint8_t)(((((uint32_t)(a_curr.ptr[(v_i - v_filter_distance)])) + ((uint32_t)(a_prev.ptr[v_i]))) / 2u)))));
-+      v_i += 1u;
-     }
-   }
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
-+  return wuffs_base__make_empty_struct();
-+}
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_trailer[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+// -------- func png.decoder.filter_3_distance_3_fallback
- 
--    if (self->private_impl.f_quirks[18u]) {
--      self->private_impl.f_trailer_stop = 10u;
--    } else {
--      self->private_impl.f_trailer_stop = 0u;
--    }
--    label__outer__continue:;
--    while (true) {
--      if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
--        continue;
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_3_distance_3_fallback(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev) {
-+  wuffs_base__slice_u8 v_curr = {0};
-+  wuffs_base__slice_u8 v_prev = {0};
-+  uint8_t v_fa0 = 0;
-+  uint8_t v_fa1 = 0;
-+  uint8_t v_fa2 = 0;
-+
-+  if (((uint64_t)(a_prev.len)) == 0u) {
-+    {
-+      wuffs_base__slice_u8 i_slice_curr = a_curr;
-+      v_curr.ptr = i_slice_curr.ptr;
-+      v_curr.len = 3;
-+      const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 6) * 6));
-+      while (v_curr.ptr < i_end0_curr) {
-+        v_fa0 = ((uint8_t)(((uint8_t)(v_fa0 / 2u)) + v_curr.ptr[0u]));
-+        v_curr.ptr[0u] = v_fa0;
-+        v_fa1 = ((uint8_t)(((uint8_t)(v_fa1 / 2u)) + v_curr.ptr[1u]));
-+        v_curr.ptr[1u] = v_fa1;
-+        v_fa2 = ((uint8_t)(((uint8_t)(v_fa2 / 2u)) + v_curr.ptr[2u]));
-+        v_curr.ptr[2u] = v_fa2;
-+        v_curr.ptr += 3;
-+        v_fa0 = ((uint8_t)(((uint8_t)(v_fa0 / 2u)) + v_curr.ptr[0u]));
-+        v_curr.ptr[0u] = v_fa0;
-+        v_fa1 = ((uint8_t)(((uint8_t)(v_fa1 / 2u)) + v_curr.ptr[1u]));
-+        v_curr.ptr[1u] = v_fa1;
-+        v_fa2 = ((uint8_t)(((uint8_t)(v_fa2 / 2u)) + v_curr.ptr[2u]));
-+        v_curr.ptr[2u] = v_fa2;
-+        v_curr.ptr += 3;
-       }
--      v_whitespace_length = 0u;
--      while (true) {
--        if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--          if (v_whitespace_length > 0u) {
--            *iop_a_dst++ = wuffs_base__make_token(
--                (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--          }
--          if (a_src && a_src->meta.closed) {
--            goto label__outer__break;
--          }
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
--          goto label__outer__continue;
--        }
--        v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--        if (WUFFS_JSON__LUT_CLASSES[v_c] != 0u) {
--          if (v_whitespace_length > 0u) {
--            *iop_a_dst++ = wuffs_base__make_token(
--                (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--                (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--          }
--          if (self->private_impl.f_trailer_stop > 0u) {
--            status = wuffs_base__make_status(wuffs_json__error__bad_input);
--            goto exit;
--          }
--          if (a_dst) {
--            a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--          }
--          if (a_src) {
--            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--          }
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--          status = wuffs_json__decoder__decode_comment(self, a_dst, a_src);
--          if (a_dst) {
--            iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
--          }
--          if (a_src) {
--            iop_a_src = a_src->data.ptr + a_src->meta.ri;
--          }
--          if (status.repr) {
--            goto suspend;
--          }
--          if (self->private_impl.f_comment_type > 0u) {
--            goto label__outer__continue;
--          }
--          status = wuffs_base__make_status(NULL);
--          goto ok;
--        }
--        iop_a_src += 1u;
--        if ((v_whitespace_length >= 65534u) || (v_c == self->private_impl.f_trailer_stop)) {
--          *iop_a_dst++ = wuffs_base__make_token(
--              (((uint64_t)(0u)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
--              (((uint64_t)((v_whitespace_length + 1u))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
--          if (v_c == self->private_impl.f_trailer_stop) {
--            status = wuffs_base__make_status(NULL);
--            goto ok;
--          }
--          goto label__outer__continue;
--        }
--        v_whitespace_length += 1u;
-+      v_curr.len = 3;
-+      const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3));
-+      while (v_curr.ptr < i_end1_curr) {
-+        v_fa0 = ((uint8_t)(((uint8_t)(v_fa0 / 2u)) + v_curr.ptr[0u]));
-+        v_curr.ptr[0u] = v_fa0;
-+        v_fa1 = ((uint8_t)(((uint8_t)(v_fa1 / 2u)) + v_curr.ptr[1u]));
-+        v_curr.ptr[1u] = v_fa1;
-+        v_fa2 = ((uint8_t)(((uint8_t)(v_fa2 / 2u)) + v_curr.ptr[2u]));
-+        v_curr.ptr[2u] = v_fa2;
-+        v_curr.ptr += 3;
-       }
-+      v_curr.len = 0;
-+    }
-+  } else {
-+    {
-+      wuffs_base__slice_u8 i_slice_curr = a_curr;
-+      v_curr.ptr = i_slice_curr.ptr;
-+      wuffs_base__slice_u8 i_slice_prev = a_prev;
-+      v_prev.ptr = i_slice_prev.ptr;
-+      i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
-+      v_curr.len = 3;
-+      v_prev.len = 3;
-+      const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 6) * 6));
-+      while (v_curr.ptr < i_end0_curr) {
-+        v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0u]))) / 2u))) + v_curr.ptr[0u]));
-+        v_curr.ptr[0u] = v_fa0;
-+        v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1u]))) / 2u))) + v_curr.ptr[1u]));
-+        v_curr.ptr[1u] = v_fa1;
-+        v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2u]))) / 2u))) + v_curr.ptr[2u]));
-+        v_curr.ptr[2u] = v_fa2;
-+        v_curr.ptr += 3;
-+        v_prev.ptr += 3;
-+        v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0u]))) / 2u))) + v_curr.ptr[0u]));
-+        v_curr.ptr[0u] = v_fa0;
-+        v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1u]))) / 2u))) + v_curr.ptr[1u]));
-+        v_curr.ptr[1u] = v_fa1;
-+        v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2u]))) / 2u))) + v_curr.ptr[2u]));
-+        v_curr.ptr[2u] = v_fa2;
-+        v_curr.ptr += 3;
-+        v_prev.ptr += 3;
-+      }
-+      v_curr.len = 3;
-+      v_prev.len = 3;
-+      const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3));
-+      while (v_curr.ptr < i_end1_curr) {
-+        v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0u]))) / 2u))) + v_curr.ptr[0u]));
-+        v_curr.ptr[0u] = v_fa0;
-+        v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1u]))) / 2u))) + v_curr.ptr[1u]));
-+        v_curr.ptr[1u] = v_fa1;
-+        v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2u]))) / 2u))) + v_curr.ptr[2u]));
-+        v_curr.ptr[2u] = v_fa2;
-+        v_curr.ptr += 3;
-+        v_prev.ptr += 3;
-+      }
-+      v_curr.len = 0;
-+      v_prev.len = 0;
-     }
--    label__outer__break:;
--
--    ok:
--    self->private_impl.p_decode_trailer[0] = 0;
--    goto exit;
--  }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_trailer[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--
--  goto exit;
--  exit:
--  if (a_dst && a_dst->data.ptr) {
--    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--  }
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
--
--  return status;
-+  return wuffs_base__make_empty_struct();
- }
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JSON)
--
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW)
--
--// ---------------- Status Codes Implementations
--
--const char wuffs_lzw__error__bad_code[] = "#lzw: bad code";
--const char wuffs_lzw__error__truncated_input[] = "#lzw: truncated input";
--const char wuffs_lzw__error__internal_error_inconsistent_i_o[] = "#lzw: internal error: inconsistent I/O";
--
--// ---------------- Private Consts
--
--#define WUFFS_LZW__QUIRKS_BASE 1348378624
--
--// ---------------- Private Initializer Prototypes
--
--// ---------------- Private Function Prototypes
-+// -------- func png.decoder.filter_3_distance_4_fallback
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__empty_struct
--wuffs_lzw__decoder__read_from(
--    wuffs_lzw__decoder* self,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_lzw__decoder__write_to(
--    wuffs_lzw__decoder* self,
--    wuffs_base__io_buffer* a_dst);
--
--// ---------------- VTables
--
--const wuffs_base__io_transformer__func_ptrs
--wuffs_lzw__decoder__func_ptrs_for__wuffs_base__io_transformer = {
--  (uint64_t(*)(const void*,
--      uint32_t))(&wuffs_lzw__decoder__get_quirk),
--  (uint64_t(*)(const void*))(&wuffs_lzw__decoder__history_retain_length),
--  (wuffs_base__status(*)(void*,
--      uint32_t,
--      uint64_t))(&wuffs_lzw__decoder__set_quirk),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__io_buffer*,
--      wuffs_base__io_buffer*,
--      wuffs_base__slice_u8))(&wuffs_lzw__decoder__transform_io),
--  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_lzw__decoder__workbuf_len),
--};
--
--// ---------------- Initializer Implementations
--
--wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_lzw__decoder__initialize(
--    wuffs_lzw__decoder* self,
--    size_t sizeof_star_self,
--    uint64_t wuffs_version,
--    uint32_t options){
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (sizeof(*self) != sizeof_star_self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
--  }
--  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
--      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
--    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
--  }
-+wuffs_png__decoder__filter_3_distance_4_fallback(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev) {
-+  wuffs_base__slice_u8 v_curr = {0};
-+  wuffs_base__slice_u8 v_prev = {0};
-+  uint8_t v_fa0 = 0;
-+  uint8_t v_fa1 = 0;
-+  uint8_t v_fa2 = 0;
-+  uint8_t v_fa3 = 0;
- 
--  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
--    // The whole point of this if-check is to detect an uninitialized *self.
--    // We disable the warning on GCC. Clang-5.0 does not have this warning.
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
--#endif
--    if (self->private_impl.magic != 0) {
--      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+  if (((uint64_t)(a_prev.len)) == 0u) {
-+    {
-+      wuffs_base__slice_u8 i_slice_curr = a_curr;
-+      v_curr.ptr = i_slice_curr.ptr;
-+      v_curr.len = 4;
-+      const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
-+      while (v_curr.ptr < i_end0_curr) {
-+        v_fa0 = ((uint8_t)(((uint8_t)(v_fa0 / 2u)) + v_curr.ptr[0u]));
-+        v_curr.ptr[0u] = v_fa0;
-+        v_fa1 = ((uint8_t)(((uint8_t)(v_fa1 / 2u)) + v_curr.ptr[1u]));
-+        v_curr.ptr[1u] = v_fa1;
-+        v_fa2 = ((uint8_t)(((uint8_t)(v_fa2 / 2u)) + v_curr.ptr[2u]));
-+        v_curr.ptr[2u] = v_fa2;
-+        v_fa3 = ((uint8_t)(((uint8_t)(v_fa3 / 2u)) + v_curr.ptr[3u]));
-+        v_curr.ptr[3u] = v_fa3;
-+        v_curr.ptr += 4;
-+      }
-+      v_curr.len = 0;
-     }
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
-   } else {
--    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
--      memset(self, 0, sizeof(*self));
--      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
--    } else {
--      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+    {
-+      wuffs_base__slice_u8 i_slice_curr = a_curr;
-+      v_curr.ptr = i_slice_curr.ptr;
-+      wuffs_base__slice_u8 i_slice_prev = a_prev;
-+      v_prev.ptr = i_slice_prev.ptr;
-+      i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
-+      v_curr.len = 4;
-+      v_prev.len = 4;
-+      const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
-+      while (v_curr.ptr < i_end0_curr) {
-+        v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0u]))) / 2u))) + v_curr.ptr[0u]));
-+        v_curr.ptr[0u] = v_fa0;
-+        v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1u]))) / 2u))) + v_curr.ptr[1u]));
-+        v_curr.ptr[1u] = v_fa1;
-+        v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2u]))) / 2u))) + v_curr.ptr[2u]));
-+        v_curr.ptr[2u] = v_fa2;
-+        v_fa3 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa3)) + ((uint32_t)(v_prev.ptr[3u]))) / 2u))) + v_curr.ptr[3u]));
-+        v_curr.ptr[3u] = v_fa3;
-+        v_curr.ptr += 4;
-+        v_prev.ptr += 4;
-+      }
-+      v_curr.len = 0;
-+      v_prev.len = 0;
-     }
-   }
--
--  self->private_impl.magic = WUFFS_BASE__MAGIC;
--  self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
--      wuffs_base__io_transformer__vtable_name;
--  self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
--      (const void*)(&wuffs_lzw__decoder__func_ptrs_for__wuffs_base__io_transformer);
--  return wuffs_base__make_status(NULL);
-+  return wuffs_base__make_empty_struct();
- }
- 
--wuffs_lzw__decoder*
--wuffs_lzw__decoder__alloc(void) {
--  wuffs_lzw__decoder* x =
--      (wuffs_lzw__decoder*)(calloc(sizeof(wuffs_lzw__decoder), 1));
--  if (!x) {
--    return NULL;
--  }
--  if (wuffs_lzw__decoder__initialize(
--      x, sizeof(wuffs_lzw__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
--    free(x);
--    return NULL;
--  }
--  return x;
--}
-+// -------- func png.decoder.filter_4
- 
--size_t
--sizeof__wuffs_lzw__decoder(void) {
--  return sizeof(wuffs_lzw__decoder);
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_4(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev) {
-+  return (*self->private_impl.choosy_filter_4)(self, a_curr, a_prev);
- }
- 
--// ---------------- Function Implementations
--
--// -------- func lzw.decoder.get_quirk
--
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_lzw__decoder__get_quirk(
--    const wuffs_lzw__decoder* self,
--    uint32_t a_key) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_4__choosy_default(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev) {
-+  uint64_t v_filter_distance = 0;
-+  uint64_t v_n = 0;
-+  uint64_t v_i = 0;
-+  uint32_t v_fa = 0;
-+  uint32_t v_fb = 0;
-+  uint32_t v_fc = 0;
-+  uint32_t v_pp = 0;
-+  uint32_t v_pa = 0;
-+  uint32_t v_pb = 0;
-+  uint32_t v_pc = 0;
- 
--  if (a_key == 1348378624u) {
--    return ((uint64_t)(self->private_impl.f_pending_literal_width_plus_one));
-+  v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance));
-+  v_n = wuffs_base__u64__min(((uint64_t)(a_curr.len)), ((uint64_t)(a_prev.len)));
-+  v_i = 0u;
-+  while ((v_i < v_n) && (v_i < v_filter_distance)) {
-+    a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + a_prev.ptr[v_i]));
-+    v_i += 1u;
-   }
--  return 0u;
-+  v_i = v_filter_distance;
-+  while (v_i < v_n) {
-+    v_fa = ((uint32_t)(a_curr.ptr[(v_i - v_filter_distance)]));
-+    v_fb = ((uint32_t)(a_prev.ptr[v_i]));
-+    v_fc = ((uint32_t)(a_prev.ptr[(v_i - v_filter_distance)]));
-+    v_pp = ((uint32_t)(((uint32_t)(v_fa + v_fb)) - v_fc));
-+    v_pa = ((uint32_t)(v_pp - v_fa));
-+    if (v_pa >= 2147483648u) {
-+      v_pa = ((uint32_t)(0u - v_pa));
-+    }
-+    v_pb = ((uint32_t)(v_pp - v_fb));
-+    if (v_pb >= 2147483648u) {
-+      v_pb = ((uint32_t)(0u - v_pb));
-+    }
-+    v_pc = ((uint32_t)(v_pp - v_fc));
-+    if (v_pc >= 2147483648u) {
-+      v_pc = ((uint32_t)(0u - v_pc));
-+    }
-+    if ((v_pa <= v_pb) && (v_pa <= v_pc)) {
-+    } else if (v_pb <= v_pc) {
-+      v_fa = v_fb;
-+    } else {
-+      v_fa = v_fc;
-+    }
-+    a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + ((uint8_t)(v_fa))));
-+    v_i += 1u;
-+  }
-+  return wuffs_base__make_empty_struct();
- }
- 
--// -------- func lzw.decoder.set_quirk
-+// -------- func png.decoder.filter_4_distance_3_fallback
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_lzw__decoder__set_quirk(
--    wuffs_lzw__decoder* self,
--    uint32_t a_key,
--    uint64_t a_value) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_4_distance_3_fallback(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev) {
-+  wuffs_base__slice_u8 v_curr = {0};
-+  wuffs_base__slice_u8 v_prev = {0};
-+  uint32_t v_fa0 = 0;
-+  uint32_t v_fa1 = 0;
-+  uint32_t v_fa2 = 0;
-+  uint32_t v_fb0 = 0;
-+  uint32_t v_fb1 = 0;
-+  uint32_t v_fb2 = 0;
-+  uint32_t v_fc0 = 0;
-+  uint32_t v_fc1 = 0;
-+  uint32_t v_fc2 = 0;
-+  uint32_t v_pp0 = 0;
-+  uint32_t v_pp1 = 0;
-+  uint32_t v_pp2 = 0;
-+  uint32_t v_pa0 = 0;
-+  uint32_t v_pa1 = 0;
-+  uint32_t v_pa2 = 0;
-+  uint32_t v_pb0 = 0;
-+  uint32_t v_pb1 = 0;
-+  uint32_t v_pb2 = 0;
-+  uint32_t v_pc0 = 0;
-+  uint32_t v_pc1 = 0;
-+  uint32_t v_pc2 = 0;
- 
--  if (a_key == 1348378624u) {
--    if (a_value > 9u) {
--      return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  {
-+    wuffs_base__slice_u8 i_slice_curr = a_curr;
-+    v_curr.ptr = i_slice_curr.ptr;
-+    wuffs_base__slice_u8 i_slice_prev = a_prev;
-+    v_prev.ptr = i_slice_prev.ptr;
-+    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
-+    v_curr.len = 3;
-+    v_prev.len = 3;
-+    const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3));
-+    while (v_curr.ptr < i_end0_curr) {
-+      v_fb0 = ((uint32_t)(v_prev.ptr[0u]));
-+      v_pp0 = ((uint32_t)(((uint32_t)(v_fa0 + v_fb0)) - v_fc0));
-+      v_pa0 = ((uint32_t)(v_pp0 - v_fa0));
-+      if (v_pa0 >= 2147483648u) {
-+        v_pa0 = ((uint32_t)(0u - v_pa0));
-+      }
-+      v_pb0 = ((uint32_t)(v_pp0 - v_fb0));
-+      if (v_pb0 >= 2147483648u) {
-+        v_pb0 = ((uint32_t)(0u - v_pb0));
-+      }
-+      v_pc0 = ((uint32_t)(v_pp0 - v_fc0));
-+      if (v_pc0 >= 2147483648u) {
-+        v_pc0 = ((uint32_t)(0u - v_pc0));
-+      }
-+      if ((v_pa0 <= v_pb0) && (v_pa0 <= v_pc0)) {
-+      } else if (v_pb0 <= v_pc0) {
-+        v_fa0 = v_fb0;
-+      } else {
-+        v_fa0 = v_fc0;
-+      }
-+      v_curr.ptr[0u] = ((uint8_t)(v_curr.ptr[0u] + ((uint8_t)(v_fa0))));
-+      v_fa0 = ((uint32_t)(v_curr.ptr[0u]));
-+      v_fc0 = v_fb0;
-+      v_fb1 = ((uint32_t)(v_prev.ptr[1u]));
-+      v_pp1 = ((uint32_t)(((uint32_t)(v_fa1 + v_fb1)) - v_fc1));
-+      v_pa1 = ((uint32_t)(v_pp1 - v_fa1));
-+      if (v_pa1 >= 2147483648u) {
-+        v_pa1 = ((uint32_t)(0u - v_pa1));
-+      }
-+      v_pb1 = ((uint32_t)(v_pp1 - v_fb1));
-+      if (v_pb1 >= 2147483648u) {
-+        v_pb1 = ((uint32_t)(0u - v_pb1));
-+      }
-+      v_pc1 = ((uint32_t)(v_pp1 - v_fc1));
-+      if (v_pc1 >= 2147483648u) {
-+        v_pc1 = ((uint32_t)(0u - v_pc1));
-+      }
-+      if ((v_pa1 <= v_pb1) && (v_pa1 <= v_pc1)) {
-+      } else if (v_pb1 <= v_pc1) {
-+        v_fa1 = v_fb1;
-+      } else {
-+        v_fa1 = v_fc1;
-+      }
-+      v_curr.ptr[1u] = ((uint8_t)(v_curr.ptr[1u] + ((uint8_t)(v_fa1))));
-+      v_fa1 = ((uint32_t)(v_curr.ptr[1u]));
-+      v_fc1 = v_fb1;
-+      v_fb2 = ((uint32_t)(v_prev.ptr[2u]));
-+      v_pp2 = ((uint32_t)(((uint32_t)(v_fa2 + v_fb2)) - v_fc2));
-+      v_pa2 = ((uint32_t)(v_pp2 - v_fa2));
-+      if (v_pa2 >= 2147483648u) {
-+        v_pa2 = ((uint32_t)(0u - v_pa2));
-+      }
-+      v_pb2 = ((uint32_t)(v_pp2 - v_fb2));
-+      if (v_pb2 >= 2147483648u) {
-+        v_pb2 = ((uint32_t)(0u - v_pb2));
-+      }
-+      v_pc2 = ((uint32_t)(v_pp2 - v_fc2));
-+      if (v_pc2 >= 2147483648u) {
-+        v_pc2 = ((uint32_t)(0u - v_pc2));
-+      }
-+      if ((v_pa2 <= v_pb2) && (v_pa2 <= v_pc2)) {
-+      } else if (v_pb2 <= v_pc2) {
-+        v_fa2 = v_fb2;
-+      } else {
-+        v_fa2 = v_fc2;
-+      }
-+      v_curr.ptr[2u] = ((uint8_t)(v_curr.ptr[2u] + ((uint8_t)(v_fa2))));
-+      v_fa2 = ((uint32_t)(v_curr.ptr[2u]));
-+      v_fc2 = v_fb2;
-+      v_curr.ptr += 3;
-+      v_prev.ptr += 3;
-     }
--    self->private_impl.f_pending_literal_width_plus_one = ((uint32_t)(a_value));
--    return wuffs_base__make_status(NULL);
-+    v_curr.len = 0;
-+    v_prev.len = 0;
-   }
--  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+  return wuffs_base__make_empty_struct();
- }
- 
--// -------- func lzw.decoder.history_retain_length
-+// -------- func png.decoder.filter_4_distance_4_fallback
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_lzw__decoder__history_retain_length(
--    const wuffs_lzw__decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
--
--  return 0u;
--}
--
--// -------- func lzw.decoder.workbuf_len
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_4_distance_4_fallback(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev) {
-+  wuffs_base__slice_u8 v_curr = {0};
-+  wuffs_base__slice_u8 v_prev = {0};
-+  uint32_t v_fa0 = 0;
-+  uint32_t v_fa1 = 0;
-+  uint32_t v_fa2 = 0;
-+  uint32_t v_fa3 = 0;
-+  uint32_t v_fb0 = 0;
-+  uint32_t v_fb1 = 0;
-+  uint32_t v_fb2 = 0;
-+  uint32_t v_fb3 = 0;
-+  uint32_t v_fc0 = 0;
-+  uint32_t v_fc1 = 0;
-+  uint32_t v_fc2 = 0;
-+  uint32_t v_fc3 = 0;
-+  uint32_t v_pp0 = 0;
-+  uint32_t v_pp1 = 0;
-+  uint32_t v_pp2 = 0;
-+  uint32_t v_pp3 = 0;
-+  uint32_t v_pa0 = 0;
-+  uint32_t v_pa1 = 0;
-+  uint32_t v_pa2 = 0;
-+  uint32_t v_pa3 = 0;
-+  uint32_t v_pb0 = 0;
-+  uint32_t v_pb1 = 0;
-+  uint32_t v_pb2 = 0;
-+  uint32_t v_pb3 = 0;
-+  uint32_t v_pc0 = 0;
-+  uint32_t v_pc1 = 0;
-+  uint32_t v_pc2 = 0;
-+  uint32_t v_pc3 = 0;
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_lzw__decoder__workbuf_len(
--    const wuffs_lzw__decoder* self) {
--  if (!self) {
--    return wuffs_base__utility__empty_range_ii_u64();
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_range_ii_u64();
-+  {
-+    wuffs_base__slice_u8 i_slice_curr = a_curr;
-+    v_curr.ptr = i_slice_curr.ptr;
-+    wuffs_base__slice_u8 i_slice_prev = a_prev;
-+    v_prev.ptr = i_slice_prev.ptr;
-+    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
-+    v_curr.len = 4;
-+    v_prev.len = 4;
-+    const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
-+    while (v_curr.ptr < i_end0_curr) {
-+      v_fb0 = ((uint32_t)(v_prev.ptr[0u]));
-+      v_pp0 = ((uint32_t)(((uint32_t)(v_fa0 + v_fb0)) - v_fc0));
-+      v_pa0 = ((uint32_t)(v_pp0 - v_fa0));
-+      if (v_pa0 >= 2147483648u) {
-+        v_pa0 = ((uint32_t)(0u - v_pa0));
-+      }
-+      v_pb0 = ((uint32_t)(v_pp0 - v_fb0));
-+      if (v_pb0 >= 2147483648u) {
-+        v_pb0 = ((uint32_t)(0u - v_pb0));
-+      }
-+      v_pc0 = ((uint32_t)(v_pp0 - v_fc0));
-+      if (v_pc0 >= 2147483648u) {
-+        v_pc0 = ((uint32_t)(0u - v_pc0));
-+      }
-+      if ((v_pa0 <= v_pb0) && (v_pa0 <= v_pc0)) {
-+      } else if (v_pb0 <= v_pc0) {
-+        v_fa0 = v_fb0;
-+      } else {
-+        v_fa0 = v_fc0;
-+      }
-+      v_curr.ptr[0u] = ((uint8_t)(v_curr.ptr[0u] + ((uint8_t)(v_fa0))));
-+      v_fa0 = ((uint32_t)(v_curr.ptr[0u]));
-+      v_fc0 = v_fb0;
-+      v_fb1 = ((uint32_t)(v_prev.ptr[1u]));
-+      v_pp1 = ((uint32_t)(((uint32_t)(v_fa1 + v_fb1)) - v_fc1));
-+      v_pa1 = ((uint32_t)(v_pp1 - v_fa1));
-+      if (v_pa1 >= 2147483648u) {
-+        v_pa1 = ((uint32_t)(0u - v_pa1));
-+      }
-+      v_pb1 = ((uint32_t)(v_pp1 - v_fb1));
-+      if (v_pb1 >= 2147483648u) {
-+        v_pb1 = ((uint32_t)(0u - v_pb1));
-+      }
-+      v_pc1 = ((uint32_t)(v_pp1 - v_fc1));
-+      if (v_pc1 >= 2147483648u) {
-+        v_pc1 = ((uint32_t)(0u - v_pc1));
-+      }
-+      if ((v_pa1 <= v_pb1) && (v_pa1 <= v_pc1)) {
-+      } else if (v_pb1 <= v_pc1) {
-+        v_fa1 = v_fb1;
-+      } else {
-+        v_fa1 = v_fc1;
-+      }
-+      v_curr.ptr[1u] = ((uint8_t)(v_curr.ptr[1u] + ((uint8_t)(v_fa1))));
-+      v_fa1 = ((uint32_t)(v_curr.ptr[1u]));
-+      v_fc1 = v_fb1;
-+      v_fb2 = ((uint32_t)(v_prev.ptr[2u]));
-+      v_pp2 = ((uint32_t)(((uint32_t)(v_fa2 + v_fb2)) - v_fc2));
-+      v_pa2 = ((uint32_t)(v_pp2 - v_fa2));
-+      if (v_pa2 >= 2147483648u) {
-+        v_pa2 = ((uint32_t)(0u - v_pa2));
-+      }
-+      v_pb2 = ((uint32_t)(v_pp2 - v_fb2));
-+      if (v_pb2 >= 2147483648u) {
-+        v_pb2 = ((uint32_t)(0u - v_pb2));
-+      }
-+      v_pc2 = ((uint32_t)(v_pp2 - v_fc2));
-+      if (v_pc2 >= 2147483648u) {
-+        v_pc2 = ((uint32_t)(0u - v_pc2));
-+      }
-+      if ((v_pa2 <= v_pb2) && (v_pa2 <= v_pc2)) {
-+      } else if (v_pb2 <= v_pc2) {
-+        v_fa2 = v_fb2;
-+      } else {
-+        v_fa2 = v_fc2;
-+      }
-+      v_curr.ptr[2u] = ((uint8_t)(v_curr.ptr[2u] + ((uint8_t)(v_fa2))));
-+      v_fa2 = ((uint32_t)(v_curr.ptr[2u]));
-+      v_fc2 = v_fb2;
-+      v_fb3 = ((uint32_t)(v_prev.ptr[3u]));
-+      v_pp3 = ((uint32_t)(((uint32_t)(v_fa3 + v_fb3)) - v_fc3));
-+      v_pa3 = ((uint32_t)(v_pp3 - v_fa3));
-+      if (v_pa3 >= 2147483648u) {
-+        v_pa3 = ((uint32_t)(0u - v_pa3));
-+      }
-+      v_pb3 = ((uint32_t)(v_pp3 - v_fb3));
-+      if (v_pb3 >= 2147483648u) {
-+        v_pb3 = ((uint32_t)(0u - v_pb3));
-+      }
-+      v_pc3 = ((uint32_t)(v_pp3 - v_fc3));
-+      if (v_pc3 >= 2147483648u) {
-+        v_pc3 = ((uint32_t)(0u - v_pc3));
-+      }
-+      if ((v_pa3 <= v_pb3) && (v_pa3 <= v_pc3)) {
-+      } else if (v_pb3 <= v_pc3) {
-+        v_fa3 = v_fb3;
-+      } else {
-+        v_fa3 = v_fc3;
-+      }
-+      v_curr.ptr[3u] = ((uint8_t)(v_curr.ptr[3u] + ((uint8_t)(v_fa3))));
-+      v_fa3 = ((uint32_t)(v_curr.ptr[3u]));
-+      v_fc3 = v_fb3;
-+      v_curr.ptr += 4;
-+      v_prev.ptr += 4;
-+    }
-+    v_curr.len = 0;
-+    v_prev.len = 0;
-   }
--
--  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
-+  return wuffs_base__make_empty_struct();
- }
- 
--// -------- func lzw.decoder.transform_io
-+// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
-+// -------- func png.decoder.filter_1_distance_4_x86_sse42
- 
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_lzw__decoder__transform_io(
--    wuffs_lzw__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__slice_u8 a_workbuf) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--  if (!a_dst || !a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 1)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
--  }
--  self->private_impl.active_coroutine = 0;
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  uint32_t v_i = 0;
--
--  uint32_t coro_susp_point = self->private_impl.p_transform_io[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_1_distance_4_x86_sse42(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr) {
-+  wuffs_base__slice_u8 v_curr = {0};
-+  __m128i v_x128 = {0};
-+  __m128i v_a128 = {0};
- 
--    self->private_impl.f_literal_width = 8u;
--    if (self->private_impl.f_pending_literal_width_plus_one > 0u) {
--      self->private_impl.f_literal_width = (self->private_impl.f_pending_literal_width_plus_one - 1u);
--    }
--    self->private_impl.f_clear_code = (((uint32_t)(1u)) << self->private_impl.f_literal_width);
--    self->private_impl.f_end_code = (self->private_impl.f_clear_code + 1u);
--    self->private_impl.f_save_code = self->private_impl.f_end_code;
--    self->private_impl.f_prev_code = self->private_impl.f_end_code;
--    self->private_impl.f_width = (self->private_impl.f_literal_width + 1u);
--    self->private_impl.f_bits = 0u;
--    self->private_impl.f_n_bits = 0u;
--    self->private_impl.f_output_ri = 0u;
--    self->private_impl.f_output_wi = 0u;
--    v_i = 0u;
--    while (v_i < self->private_impl.f_clear_code) {
--      self->private_data.f_lm1s[v_i] = 0u;
--      self->private_data.f_suffixes[v_i][0u] = ((uint8_t)(v_i));
--      v_i += 1u;
-+  {
-+    wuffs_base__slice_u8 i_slice_curr = a_curr;
-+    v_curr.ptr = i_slice_curr.ptr;
-+    v_curr.len = 4;
-+    const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8));
-+    while (v_curr.ptr < i_end0_curr) {
-+      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+      v_x128 = _mm_add_epi8(v_x128, v_a128);
-+      v_a128 = v_x128;
-+      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
-+      v_curr.ptr += 4;
-+      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+      v_x128 = _mm_add_epi8(v_x128, v_a128);
-+      v_a128 = v_x128;
-+      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
-+      v_curr.ptr += 4;
-     }
--    while (true) {
--      wuffs_lzw__decoder__read_from(self, a_src);
--      if (self->private_impl.f_output_wi > 0u) {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--        status = wuffs_lzw__decoder__write_to(self, a_dst);
--        if (status.repr) {
--          goto suspend;
--        }
--      }
--      if (self->private_impl.f_read_from_return_value == 0u) {
--        break;
--      } else if (self->private_impl.f_read_from_return_value == 1u) {
--        continue;
--      } else if (self->private_impl.f_read_from_return_value == 2u) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
--      } else if (self->private_impl.f_read_from_return_value == 3u) {
--        status = wuffs_base__make_status(wuffs_lzw__error__truncated_input);
--        goto exit;
--      } else if (self->private_impl.f_read_from_return_value == 4u) {
--        status = wuffs_base__make_status(wuffs_lzw__error__bad_code);
--        goto exit;
--      } else {
--        status = wuffs_base__make_status(wuffs_lzw__error__internal_error_inconsistent_i_o);
--        goto exit;
--      }
-+    v_curr.len = 4;
-+    const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
-+    while (v_curr.ptr < i_end1_curr) {
-+      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+      v_x128 = _mm_add_epi8(v_x128, v_a128);
-+      v_a128 = v_x128;
-+      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
-+      v_curr.ptr += 4;
-     }
--
--    ok:
--    self->private_impl.p_transform_io[0] = 0;
--    goto exit;
--  }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
--
--  goto exit;
--  exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    v_curr.len = 0;
-   }
--  return status;
-+  return wuffs_base__make_empty_struct();
- }
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
- 
--// -------- func lzw.decoder.read_from
-+// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
-+// -------- func png.decoder.filter_3_distance_4_x86_sse42
- 
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__empty_struct
--wuffs_lzw__decoder__read_from(
--    wuffs_lzw__decoder* self,
--    wuffs_base__io_buffer* a_src) {
--  uint32_t v_clear_code = 0;
--  uint32_t v_end_code = 0;
--  uint32_t v_save_code = 0;
--  uint32_t v_prev_code = 0;
--  uint32_t v_width = 0;
--  uint32_t v_bits = 0;
--  uint32_t v_n_bits = 0;
--  uint32_t v_output_wi = 0;
--  uint32_t v_code = 0;
--  uint32_t v_c = 0;
--  uint32_t v_o = 0;
--  uint32_t v_steps = 0;
--  uint8_t v_first_byte = 0;
--  uint16_t v_lm1_b = 0;
--  uint16_t v_lm1_a = 0;
--
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
-+wuffs_png__decoder__filter_3_distance_4_x86_sse42(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev) {
-+  wuffs_base__slice_u8 v_curr = {0};
-+  wuffs_base__slice_u8 v_prev = {0};
-+  __m128i v_x128 = {0};
-+  __m128i v_a128 = {0};
-+  __m128i v_b128 = {0};
-+  __m128i v_p128 = {0};
-+  __m128i v_k128 = {0};
- 
--  v_clear_code = self->private_impl.f_clear_code;
--  v_end_code = self->private_impl.f_end_code;
--  v_save_code = self->private_impl.f_save_code;
--  v_prev_code = self->private_impl.f_prev_code;
--  v_width = self->private_impl.f_width;
--  v_bits = self->private_impl.f_bits;
--  v_n_bits = self->private_impl.f_n_bits;
--  v_output_wi = self->private_impl.f_output_wi;
--  while (true) {
--    if (v_n_bits < v_width) {
--      if (((uint64_t)(io2_a_src - iop_a_src)) >= 4u) {
--        v_bits |= ((uint32_t)(wuffs_base__peek_u32le__no_bounds_check(iop_a_src) << v_n_bits));
--        iop_a_src += ((31u - v_n_bits) >> 3u);
--        v_n_bits |= 24u;
--      } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--        if (a_src && a_src->meta.closed) {
--          self->private_impl.f_read_from_return_value = 3u;
--        } else {
--          self->private_impl.f_read_from_return_value = 2u;
--        }
--        break;
--      } else {
--        v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
--        iop_a_src += 1u;
--        v_n_bits += 8u;
--        if (v_n_bits >= v_width) {
--        } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--          if (a_src && a_src->meta.closed) {
--            self->private_impl.f_read_from_return_value = 3u;
--          } else {
--            self->private_impl.f_read_from_return_value = 2u;
--          }
--          break;
--        } else {
--          v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
--          iop_a_src += 1u;
--          v_n_bits += 8u;
--          if (v_n_bits < v_width) {
--            self->private_impl.f_read_from_return_value = 5u;
--            break;
--          }
--        }
--      }
--    }
--    v_code = ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_width));
--    v_bits >>= v_width;
--    v_n_bits -= v_width;
--    if (v_code < v_clear_code) {
--      self->private_data.f_output[v_output_wi] = ((uint8_t)(v_code));
--      v_output_wi = ((v_output_wi + 1u) & 8191u);
--      if (v_save_code <= 4095u) {
--        v_lm1_a = (((uint16_t)(self->private_data.f_lm1s[v_prev_code] + 1u)) & 4095u);
--        self->private_data.f_lm1s[v_save_code] = v_lm1_a;
--        if ((v_lm1_a % 8u) != 0u) {
--          self->private_impl.f_prefixes[v_save_code] = self->private_impl.f_prefixes[v_prev_code];
--          memcpy(self->private_data.f_suffixes[v_save_code],self->private_data.f_suffixes[v_prev_code], sizeof(self->private_data.f_suffixes[v_save_code]));
--          self->private_data.f_suffixes[v_save_code][(v_lm1_a % 8u)] = ((uint8_t)(v_code));
--        } else {
--          self->private_impl.f_prefixes[v_save_code] = ((uint16_t)(v_prev_code));
--          self->private_data.f_suffixes[v_save_code][0u] = ((uint8_t)(v_code));
--        }
--        v_save_code += 1u;
--        if (v_width < 12u) {
--          v_width += (1u & (v_save_code >> v_width));
--        }
--        v_prev_code = v_code;
--      }
--    } else if (v_code <= v_end_code) {
--      if (v_code == v_end_code) {
--        self->private_impl.f_read_from_return_value = 0u;
--        break;
--      }
--      v_save_code = v_end_code;
--      v_prev_code = v_end_code;
--      v_width = (self->private_impl.f_literal_width + 1u);
--    } else if (v_code <= v_save_code) {
--      v_c = v_code;
--      if (v_code == v_save_code) {
--        v_c = v_prev_code;
--      }
--      v_o = ((v_output_wi + (((uint32_t)(self->private_data.f_lm1s[v_c])) & 4294967288u)) & 8191u);
--      v_output_wi = ((v_output_wi + 1u + ((uint32_t)(self->private_data.f_lm1s[v_c]))) & 8191u);
--      v_steps = (((uint32_t)(self->private_data.f_lm1s[v_c])) >> 3u);
--      while (true) {
--        memcpy((self->private_data.f_output)+(v_o), (self->private_data.f_suffixes[v_c]), 8u);
--        if (v_steps <= 0u) {
--          break;
--        }
--        v_steps -= 1u;
--        v_o = (((uint32_t)(v_o - 8u)) & 8191u);
--        v_c = ((uint32_t)(self->private_impl.f_prefixes[v_c]));
--      }
--      v_first_byte = self->private_data.f_suffixes[v_c][0u];
--      if (v_code == v_save_code) {
--        self->private_data.f_output[v_output_wi] = v_first_byte;
--        v_output_wi = ((v_output_wi + 1u) & 8191u);
-+  if (((uint64_t)(a_prev.len)) == 0u) {
-+    v_k128 = _mm_set1_epi8((int8_t)(254u));
-+    {
-+      wuffs_base__slice_u8 i_slice_curr = a_curr;
-+      v_curr.ptr = i_slice_curr.ptr;
-+      v_curr.len = 4;
-+      const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8));
-+      while (v_curr.ptr < i_end0_curr) {
-+        v_p128 = _mm_avg_epu8(_mm_and_si128(v_a128, v_k128), v_b128);
-+        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+        v_x128 = _mm_add_epi8(v_x128, v_p128);
-+        v_a128 = v_x128;
-+        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
-+        v_curr.ptr += 4;
-+        v_p128 = _mm_avg_epu8(_mm_and_si128(v_a128, v_k128), v_b128);
-+        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+        v_x128 = _mm_add_epi8(v_x128, v_p128);
-+        v_a128 = v_x128;
-+        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
-+        v_curr.ptr += 4;
-       }
--      if (v_save_code <= 4095u) {
--        v_lm1_b = (((uint16_t)(self->private_data.f_lm1s[v_prev_code] + 1u)) & 4095u);
--        self->private_data.f_lm1s[v_save_code] = v_lm1_b;
--        if ((v_lm1_b % 8u) != 0u) {
--          self->private_impl.f_prefixes[v_save_code] = self->private_impl.f_prefixes[v_prev_code];
--          memcpy(self->private_data.f_suffixes[v_save_code],self->private_data.f_suffixes[v_prev_code], sizeof(self->private_data.f_suffixes[v_save_code]));
--          self->private_data.f_suffixes[v_save_code][(v_lm1_b % 8u)] = v_first_byte;
--        } else {
--          self->private_impl.f_prefixes[v_save_code] = ((uint16_t)(v_prev_code));
--          self->private_data.f_suffixes[v_save_code][0u] = ((uint8_t)(v_first_byte));
--        }
--        v_save_code += 1u;
--        if (v_width < 12u) {
--          v_width += (1u & (v_save_code >> v_width));
--        }
--        v_prev_code = v_code;
-+      v_curr.len = 4;
-+      const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
-+      while (v_curr.ptr < i_end1_curr) {
-+        v_p128 = _mm_avg_epu8(_mm_and_si128(v_a128, v_k128), v_b128);
-+        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+        v_x128 = _mm_add_epi8(v_x128, v_p128);
-+        v_a128 = v_x128;
-+        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
-+        v_curr.ptr += 4;
-       }
--    } else {
--      self->private_impl.f_read_from_return_value = 4u;
--      break;
--    }
--    if (v_output_wi > 4095u) {
--      self->private_impl.f_read_from_return_value = 1u;
--      break;
-+      v_curr.len = 0;
-     }
--  }
--  if (self->private_impl.f_read_from_return_value != 2u) {
--    while (v_n_bits >= 8u) {
--      v_n_bits -= 8u;
--      if (iop_a_src > io1_a_src) {
--        iop_a_src--;
--      } else {
--        self->private_impl.f_read_from_return_value = 5u;
--        break;
-+  } else {
-+    v_k128 = _mm_set1_epi8((int8_t)(1u));
-+    {
-+      wuffs_base__slice_u8 i_slice_curr = a_curr;
-+      v_curr.ptr = i_slice_curr.ptr;
-+      wuffs_base__slice_u8 i_slice_prev = a_prev;
-+      v_prev.ptr = i_slice_prev.ptr;
-+      i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
-+      v_curr.len = 4;
-+      v_prev.len = 4;
-+      const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8));
-+      while (v_curr.ptr < i_end0_curr) {
-+        v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
-+        v_p128 = _mm_avg_epu8(v_a128, v_b128);
-+        v_p128 = _mm_sub_epi8(v_p128, _mm_and_si128(v_k128, _mm_xor_si128(v_a128, v_b128)));
-+        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+        v_x128 = _mm_add_epi8(v_x128, v_p128);
-+        v_a128 = v_x128;
-+        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
-+        v_curr.ptr += 4;
-+        v_prev.ptr += 4;
-+        v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
-+        v_p128 = _mm_avg_epu8(v_a128, v_b128);
-+        v_p128 = _mm_sub_epi8(v_p128, _mm_and_si128(v_k128, _mm_xor_si128(v_a128, v_b128)));
-+        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+        v_x128 = _mm_add_epi8(v_x128, v_p128);
-+        v_a128 = v_x128;
-+        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
-+        v_curr.ptr += 4;
-+        v_prev.ptr += 4;
-+      }
-+      v_curr.len = 4;
-+      v_prev.len = 4;
-+      const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
-+      while (v_curr.ptr < i_end1_curr) {
-+        v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
-+        v_p128 = _mm_avg_epu8(v_a128, v_b128);
-+        v_p128 = _mm_sub_epi8(v_p128, _mm_and_si128(v_k128, _mm_xor_si128(v_a128, v_b128)));
-+        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+        v_x128 = _mm_add_epi8(v_x128, v_p128);
-+        v_a128 = v_x128;
-+        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
-+        v_curr.ptr += 4;
-+        v_prev.ptr += 4;
-       }
-+      v_curr.len = 0;
-+      v_prev.len = 0;
-     }
-   }
--  self->private_impl.f_save_code = v_save_code;
--  self->private_impl.f_prev_code = v_prev_code;
--  self->private_impl.f_width = v_width;
--  self->private_impl.f_bits = v_bits;
--  self->private_impl.f_n_bits = v_n_bits;
--  self->private_impl.f_output_wi = v_output_wi;
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
--
-   return wuffs_base__make_empty_struct();
- }
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
- 
--// -------- func lzw.decoder.write_to
-+// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
-+// -------- func png.decoder.filter_4_distance_3_x86_sse42
- 
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_lzw__decoder__write_to(
--    wuffs_lzw__decoder* self,
--    wuffs_base__io_buffer* a_dst) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  wuffs_base__slice_u8 v_s = {0};
--  uint64_t v_n = 0;
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_4_distance_3_x86_sse42(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev) {
-+  wuffs_base__slice_u8 v_curr = {0};
-+  wuffs_base__slice_u8 v_prev = {0};
-+  __m128i v_x128 = {0};
-+  __m128i v_a128 = {0};
-+  __m128i v_b128 = {0};
-+  __m128i v_c128 = {0};
-+  __m128i v_p128 = {0};
-+  __m128i v_pa128 = {0};
-+  __m128i v_pb128 = {0};
-+  __m128i v_pc128 = {0};
-+  __m128i v_smallest128 = {0};
-+  __m128i v_z128 = {0};
- 
--  uint8_t* iop_a_dst = NULL;
--  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_dst && a_dst->data.ptr) {
--    io0_a_dst = a_dst->data.ptr;
--    io1_a_dst = io0_a_dst + a_dst->meta.wi;
--    iop_a_dst = io1_a_dst;
--    io2_a_dst = io0_a_dst + a_dst->data.len;
--    if (a_dst->meta.closed) {
--      io2_a_dst = iop_a_dst;
-+  {
-+    wuffs_base__slice_u8 i_slice_curr = a_curr;
-+    v_curr.ptr = i_slice_curr.ptr;
-+    wuffs_base__slice_u8 i_slice_prev = a_prev;
-+    v_prev.ptr = i_slice_prev.ptr;
-+    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
-+    v_curr.len = 4;
-+    v_prev.len = 4;
-+    const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, wuffs_private_impl__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 7, 6));
-+    while (v_curr.ptr < i_end0_curr) {
-+      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
-+      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
-+      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
-+      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
-+      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
-+      v_pa128 = _mm_abs_epi16(v_pa128);
-+      v_pb128 = _mm_abs_epi16(v_pb128);
-+      v_pc128 = _mm_abs_epi16(v_pc128);
-+      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
-+      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
-+      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
-+      v_x128 = _mm_add_epi8(v_x128, v_p128);
-+      v_a128 = v_x128;
-+      v_c128 = v_b128;
-+      v_x128 = _mm_packus_epi16(v_x128, v_x128);
-+      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
-+      v_curr.ptr += 3;
-+      v_prev.ptr += 3;
-+      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
-+      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
-+      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
-+      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
-+      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
-+      v_pa128 = _mm_abs_epi16(v_pa128);
-+      v_pb128 = _mm_abs_epi16(v_pb128);
-+      v_pc128 = _mm_abs_epi16(v_pc128);
-+      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
-+      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
-+      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
-+      v_x128 = _mm_add_epi8(v_x128, v_p128);
-+      v_a128 = v_x128;
-+      v_c128 = v_b128;
-+      v_x128 = _mm_packus_epi16(v_x128, v_x128);
-+      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
-+      v_curr.ptr += 3;
-+      v_prev.ptr += 3;
-     }
--  }
--
--  uint32_t coro_susp_point = self->private_impl.p_write_to[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    while (self->private_impl.f_output_wi > 0u) {
--      if (self->private_impl.f_output_ri > self->private_impl.f_output_wi) {
--        status = wuffs_base__make_status(wuffs_lzw__error__internal_error_inconsistent_i_o);
--        goto exit;
--      }
--      v_s = wuffs_base__make_slice_u8_ij(self->private_data.f_output,
--          self->private_impl.f_output_ri,
--          self->private_impl.f_output_wi);
--      v_n = wuffs_base__io_writer__copy_from_slice(&iop_a_dst, io2_a_dst,v_s);
--      if (v_n == ((uint64_t)(v_s.len))) {
--        self->private_impl.f_output_ri = 0u;
--        self->private_impl.f_output_wi = 0u;
--        status = wuffs_base__make_status(NULL);
--        goto ok;
--      }
--      self->private_impl.f_output_ri = (((uint32_t)(self->private_impl.f_output_ri + ((uint32_t)(v_n)))) & 8191u);
--      status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    v_curr.len = 4;
-+    v_prev.len = 4;
-+    const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, wuffs_private_impl__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 4, 3));
-+    while (v_curr.ptr < i_end1_curr) {
-+      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
-+      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
-+      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
-+      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
-+      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
-+      v_pa128 = _mm_abs_epi16(v_pa128);
-+      v_pb128 = _mm_abs_epi16(v_pb128);
-+      v_pc128 = _mm_abs_epi16(v_pc128);
-+      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
-+      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
-+      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
-+      v_x128 = _mm_add_epi8(v_x128, v_p128);
-+      v_a128 = v_x128;
-+      v_c128 = v_b128;
-+      v_x128 = _mm_packus_epi16(v_x128, v_x128);
-+      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
-+      v_curr.ptr += 3;
-+      v_prev.ptr += 3;
-     }
--
--    ok:
--    self->private_impl.p_write_to[0] = 0;
--    goto exit;
--  }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_write_to[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--
--  goto exit;
--  exit:
--  if (a_dst && a_dst->data.ptr) {
--    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--  }
--
--  return status;
--}
--
--// -------- func lzw.decoder.flush
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__slice_u8
--wuffs_lzw__decoder__flush(
--    wuffs_lzw__decoder* self) {
--  if (!self) {
--    return wuffs_base__make_slice_u8(NULL, 0);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_slice_u8(NULL, 0);
--  }
--
--  uint32_t v_ri = 0;
--  uint32_t v_wi = 0;
--
--  v_ri = self->private_impl.f_output_ri;
--  v_wi = self->private_impl.f_output_wi;
--  self->private_impl.f_output_ri = 0u;
--  self->private_impl.f_output_wi = 0u;
--  if (v_ri <= v_wi) {
--    return wuffs_base__make_slice_u8_ij(self->private_data.f_output, v_ri, v_wi);
-+    v_curr.len = 3;
-+    v_prev.len = 3;
-+    const uint8_t* i_end2_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3));
-+    while (v_curr.ptr < i_end2_curr) {
-+      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u24le__no_bounds_check(v_prev.ptr)));
-+      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
-+      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
-+      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
-+      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
-+      v_pa128 = _mm_abs_epi16(v_pa128);
-+      v_pb128 = _mm_abs_epi16(v_pb128);
-+      v_pc128 = _mm_abs_epi16(v_pc128);
-+      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
-+      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
-+      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u24le__no_bounds_check(v_curr.ptr)));
-+      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
-+      v_x128 = _mm_add_epi8(v_x128, v_p128);
-+      v_x128 = _mm_packus_epi16(v_x128, v_x128);
-+      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
-+      v_curr.ptr += 3;
-+      v_prev.ptr += 3;
-+    }
-+    v_curr.len = 0;
-+    v_prev.len = 0;
-   }
--  return wuffs_base__make_slice_u8(self->private_data.f_output, 0);
-+  return wuffs_base__make_empty_struct();
- }
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW)
--
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM)
--
--// ---------------- Status Codes Implementations
--
--const char wuffs_netpbm__error__bad_header[] = "#netpbm: bad header";
--const char wuffs_netpbm__error__truncated_input[] = "#netpbm: truncated input";
--const char wuffs_netpbm__error__unsupported_netpbm_file[] = "#netpbm: unsupported Netpbm file";
--const char wuffs_netpbm__note__internal_note_short_read[] = "@netpbm: internal note: short read";
--
--// ---------------- Private Consts
--
--// ---------------- Private Initializer Prototypes
--
--// ---------------- Private Function Prototypes
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_netpbm__decoder__do_decode_image_config(
--    wuffs_netpbm__decoder* self,
--    wuffs_base__image_config* a_dst,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_netpbm__decoder__do_decode_frame_config(
--    wuffs_netpbm__decoder* self,
--    wuffs_base__frame_config* a_dst,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_netpbm__decoder__do_decode_frame(
--    wuffs_netpbm__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts);
-+// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
-+// -------- func png.decoder.filter_4_distance_4_x86_sse42
- 
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_netpbm__decoder__swizzle(
--    wuffs_netpbm__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src);
--
--// ---------------- VTables
--
--const wuffs_base__image_decoder__func_ptrs
--wuffs_netpbm__decoder__func_ptrs_for__wuffs_base__image_decoder = {
--  (wuffs_base__status(*)(void*,
--      wuffs_base__pixel_buffer*,
--      wuffs_base__io_buffer*,
--      wuffs_base__pixel_blend,
--      wuffs_base__slice_u8,
--      wuffs_base__decode_frame_options*))(&wuffs_netpbm__decoder__decode_frame),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__frame_config*,
--      wuffs_base__io_buffer*))(&wuffs_netpbm__decoder__decode_frame_config),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__image_config*,
--      wuffs_base__io_buffer*))(&wuffs_netpbm__decoder__decode_image_config),
--  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_netpbm__decoder__frame_dirty_rect),
--  (uint64_t(*)(const void*,
--      uint32_t))(&wuffs_netpbm__decoder__get_quirk),
--  (uint64_t(*)(const void*))(&wuffs_netpbm__decoder__history_retain_length),
--  (uint32_t(*)(const void*))(&wuffs_netpbm__decoder__num_animation_loops),
--  (uint64_t(*)(const void*))(&wuffs_netpbm__decoder__num_decoded_frame_configs),
--  (uint64_t(*)(const void*))(&wuffs_netpbm__decoder__num_decoded_frames),
--  (wuffs_base__status(*)(void*,
--      uint64_t,
--      uint64_t))(&wuffs_netpbm__decoder__restart_frame),
--  (wuffs_base__status(*)(void*,
--      uint32_t,
--      uint64_t))(&wuffs_netpbm__decoder__set_quirk),
--  (wuffs_base__empty_struct(*)(void*,
--      uint32_t,
--      bool))(&wuffs_netpbm__decoder__set_report_metadata),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__io_buffer*,
--      wuffs_base__more_information*,
--      wuffs_base__io_buffer*))(&wuffs_netpbm__decoder__tell_me_more),
--  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_netpbm__decoder__workbuf_len),
--};
--
--// ---------------- Initializer Implementations
--
--wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_netpbm__decoder__initialize(
--    wuffs_netpbm__decoder* self,
--    size_t sizeof_star_self,
--    uint64_t wuffs_version,
--    uint32_t options){
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (sizeof(*self) != sizeof_star_self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
--  }
--  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
--      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
--    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
--  }
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__filter_4_distance_4_x86_sse42(
-+    wuffs_png__decoder* self,
-+    wuffs_base__slice_u8 a_curr,
-+    wuffs_base__slice_u8 a_prev) {
-+  wuffs_base__slice_u8 v_curr = {0};
-+  wuffs_base__slice_u8 v_prev = {0};
-+  __m128i v_x128 = {0};
-+  __m128i v_a128 = {0};
-+  __m128i v_b128 = {0};
-+  __m128i v_c128 = {0};
-+  __m128i v_p128 = {0};
-+  __m128i v_pa128 = {0};
-+  __m128i v_pb128 = {0};
-+  __m128i v_pc128 = {0};
-+  __m128i v_smallest128 = {0};
-+  __m128i v_z128 = {0};
- 
--  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
--    // The whole point of this if-check is to detect an uninitialized *self.
--    // We disable the warning on GCC. Clang-5.0 does not have this warning.
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
--#endif
--    if (self->private_impl.magic != 0) {
--      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+  {
-+    wuffs_base__slice_u8 i_slice_curr = a_curr;
-+    v_curr.ptr = i_slice_curr.ptr;
-+    wuffs_base__slice_u8 i_slice_prev = a_prev;
-+    v_prev.ptr = i_slice_prev.ptr;
-+    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
-+    v_curr.len = 4;
-+    v_prev.len = 4;
-+    const uint8_t* i_end0_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8));
-+    while (v_curr.ptr < i_end0_curr) {
-+      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
-+      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
-+      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
-+      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
-+      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
-+      v_pa128 = _mm_abs_epi16(v_pa128);
-+      v_pb128 = _mm_abs_epi16(v_pb128);
-+      v_pc128 = _mm_abs_epi16(v_pc128);
-+      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
-+      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
-+      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
-+      v_x128 = _mm_add_epi8(v_x128, v_p128);
-+      v_a128 = v_x128;
-+      v_c128 = v_b128;
-+      v_x128 = _mm_packus_epi16(v_x128, v_x128);
-+      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
-+      v_curr.ptr += 4;
-+      v_prev.ptr += 4;
-+      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
-+      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
-+      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
-+      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
-+      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
-+      v_pa128 = _mm_abs_epi16(v_pa128);
-+      v_pb128 = _mm_abs_epi16(v_pb128);
-+      v_pc128 = _mm_abs_epi16(v_pc128);
-+      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
-+      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
-+      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
-+      v_x128 = _mm_add_epi8(v_x128, v_p128);
-+      v_a128 = v_x128;
-+      v_c128 = v_b128;
-+      v_x128 = _mm_packus_epi16(v_x128, v_x128);
-+      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
-+      v_curr.ptr += 4;
-+      v_prev.ptr += 4;
-     }
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--  } else {
--    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
--      memset(self, 0, sizeof(*self));
--      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
--    } else {
--      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+    v_curr.len = 4;
-+    v_prev.len = 4;
-+    const uint8_t* i_end1_curr = wuffs_private_impl__ptr_u8_plus_len(v_curr.ptr, (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4));
-+    while (v_curr.ptr < i_end1_curr) {
-+      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
-+      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
-+      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
-+      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
-+      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
-+      v_pa128 = _mm_abs_epi16(v_pa128);
-+      v_pb128 = _mm_abs_epi16(v_pb128);
-+      v_pc128 = _mm_abs_epi16(v_pc128);
-+      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
-+      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
-+      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
-+      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
-+      v_x128 = _mm_add_epi8(v_x128, v_p128);
-+      v_a128 = v_x128;
-+      v_c128 = v_b128;
-+      v_x128 = _mm_packus_epi16(v_x128, v_x128);
-+      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
-+      v_curr.ptr += 4;
-+      v_prev.ptr += 4;
-     }
-+    v_curr.len = 0;
-+    v_prev.len = 0;
-   }
--
--  self->private_impl.magic = WUFFS_BASE__MAGIC;
--  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
--      wuffs_base__image_decoder__vtable_name;
--  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
--      (const void*)(&wuffs_netpbm__decoder__func_ptrs_for__wuffs_base__image_decoder);
--  return wuffs_base__make_status(NULL);
--}
--
--wuffs_netpbm__decoder*
--wuffs_netpbm__decoder__alloc(void) {
--  wuffs_netpbm__decoder* x =
--      (wuffs_netpbm__decoder*)(calloc(sizeof(wuffs_netpbm__decoder), 1));
--  if (!x) {
--    return NULL;
--  }
--  if (wuffs_netpbm__decoder__initialize(
--      x, sizeof(wuffs_netpbm__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
--    free(x);
--    return NULL;
--  }
--  return x;
--}
--
--size_t
--sizeof__wuffs_netpbm__decoder(void) {
--  return sizeof(wuffs_netpbm__decoder);
-+  return wuffs_base__make_empty_struct();
- }
-+#endif  // defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
- 
--// ---------------- Function Implementations
--
--// -------- func netpbm.decoder.get_quirk
-+// -------- func png.decoder.get_quirk
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_netpbm__decoder__get_quirk(
--    const wuffs_netpbm__decoder* self,
-+wuffs_png__decoder__get_quirk(
-+    const wuffs_png__decoder* self,
-     uint32_t a_key) {
-   if (!self) {
-     return 0;
-@@ -49804,15 +62628,18 @@ wuffs_netpbm__decoder__get_quirk(
-     return 0;
-   }
- 
-+  if ((a_key == 1u) && self->private_impl.f_ignore_checksum) {
-+    return 1u;
-+  }
-   return 0u;
- }
- 
--// -------- func netpbm.decoder.set_quirk
-+// -------- func png.decoder.set_quirk
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_netpbm__decoder__set_quirk(
--    wuffs_netpbm__decoder* self,
-+wuffs_png__decoder__set_quirk(
-+    wuffs_png__decoder* self,
-     uint32_t a_key,
-     uint64_t a_value) {
-   if (!self) {
-@@ -49825,15 +62652,20 @@ wuffs_netpbm__decoder__set_quirk(
-         : wuffs_base__error__initialize_not_called);
-   }
- 
-+  if (a_key == 1u) {
-+    self->private_impl.f_ignore_checksum = (a_value > 0u);
-+    wuffs_zlib__decoder__set_quirk(&self->private_data.f_zlib, a_key, a_value);
-+    return wuffs_base__make_status(NULL);
-+  }
-   return wuffs_base__make_status(wuffs_base__error__unsupported_option);
- }
- 
--// -------- func netpbm.decoder.decode_image_config
-+// -------- func png.decoder.decode_image_config
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_netpbm__decoder__decode_image_config(
--    wuffs_netpbm__decoder* self,
-+wuffs_png__decoder__decode_image_config(
-+    wuffs_png__decoder* self,
-     wuffs_base__image_config* a_dst,
-     wuffs_base__io_buffer* a_src) {
-   if (!self) {
-@@ -49859,53 +62691,364 @@ wuffs_netpbm__decoder__decode_image_config(
- 
-   wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_image_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_png__decoder__do_decode_image_config(self, a_dst, a_src);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_png__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+
-+    ok:
-+    self->private_impl.p_decode_image_config = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func png.decoder.do_decode_image_config
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_png__decoder__do_decode_image_config(
-+    wuffs_png__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint64_t v_magic = 0;
-+  uint64_t v_mark = 0;
-+  uint32_t v_checksum_have = 0;
-+  uint32_t v_checksum_want = 0;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config;
-+  if (coro_susp_point) {
-+    v_checksum_have = self->private_data.s_do_decode_image_config.v_checksum_have;
-+  }
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
-+    if (self->private_impl.f_call_sequence != 0u) {
-+      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+      goto exit;
-+    } else if ( ! self->private_impl.f_seen_ihdr) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        uint64_t t_0;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
-+          t_0 = wuffs_base__peek_u64le__no_bounds_check(iop_a_src);
-+          iop_a_src += 8;
-+        } else {
-+          self->private_data.s_do_decode_image_config.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+            uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
-+            if (num_bits_0 == 56) {
-+              t_0 = ((uint64_t)(*scratch));
-+              break;
-+            }
-+            num_bits_0 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_0)) << 56;
-+          }
-+        }
-+        v_magic = t_0;
-+      }
-+      if (v_magic != 727905341920923785u) {
-+        status = wuffs_base__make_status(wuffs_png__error__bad_header);
-+        goto exit;
-+      }
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+        uint64_t t_1;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
-+          t_1 = wuffs_base__peek_u64le__no_bounds_check(iop_a_src);
-+          iop_a_src += 8;
-+        } else {
-+          self->private_data.s_do_decode_image_config.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+            uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
-+            if (num_bits_1 == 56) {
-+              t_1 = ((uint64_t)(*scratch));
-+              break;
-+            }
-+            num_bits_1 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_1)) << 56;
-+          }
-+        }
-+        v_magic = t_1;
-+      }
-+      if (v_magic != 5927942488114331648u) {
-+        if (v_magic == 5278895250759221248u) {
-+          status = wuffs_base__make_status(wuffs_png__error__unsupported_cgbi_extension);
-+          goto exit;
-+        }
-+        status = wuffs_base__make_status(wuffs_png__error__bad_header);
-+        goto exit;
-+      }
-+      self->private_impl.f_chunk_type_array[0u] = 73u;
-+      self->private_impl.f_chunk_type_array[1u] = 72u;
-+      self->private_impl.f_chunk_type_array[2u] = 68u;
-+      self->private_impl.f_chunk_type_array[3u] = 82u;
-+      wuffs_private_impl__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
-+          sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
-+      wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4));
-+      while (true) {
-+        v_mark = ((uint64_t)(iop_a_src - io0_a_src));
-+        {
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          wuffs_base__status t_2 = wuffs_png__decoder__decode_ihdr(self, a_src);
-+          v_status = t_2;
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+        }
-+        if ( ! self->private_impl.f_ignore_checksum) {
-+          v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_private_impl__io__since(v_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
-+        }
-+        if (wuffs_base__status__is_ok(&v_status)) {
-+          break;
-+        }
-+        status = v_status;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
-+      }
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+        uint32_t t_3;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+          t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+          iop_a_src += 4;
-+        } else {
-+          self->private_data.s_do_decode_image_config.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+            uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu));
-+            *scratch >>= 8;
-+            *scratch <<= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
-+            if (num_bits_3 == 24) {
-+              t_3 = ((uint32_t)(*scratch >> 32));
-+              break;
-+            }
-+            num_bits_3 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_3));
-+          }
-+        }
-+        v_checksum_want = t_3;
-+      }
-+      if ( ! self->private_impl.f_ignore_checksum && (v_checksum_have != v_checksum_want)) {
-+        status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
-+        goto exit;
-+      }
-+      self->private_impl.f_seen_ihdr = true;
-+    } else if (self->private_impl.f_metadata_fourcc != 0u) {
-+      self->private_impl.f_call_sequence = 16u;
-+      status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
-+      goto ok;
-+    }
-     while (true) {
-+      if (((uint64_t)(io2_a_src - iop_a_src)) < 8u) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
-+        continue;
-+      }
-+      self->private_impl.f_chunk_length = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+      self->private_impl.f_chunk_type = ((uint32_t)((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) >> 32u)));
-+      if (self->private_impl.f_chunk_type == 1413563465u) {
-+        if ( ! self->private_impl.f_seen_actl || self->private_impl.f_seen_fctl) {
-+          break;
-+        }
-+        self->private_impl.f_seen_idat = true;
-+      } else if (self->private_impl.f_chunk_type == 1413571686u) {
-+        if (self->private_impl.f_seen_idat && self->private_impl.f_seen_fctl) {
-+          break;
-+        }
-+        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+        goto exit;
-+      }
-+      iop_a_src += 8u;
-+      if ( ! self->private_impl.f_ignore_checksum && ((self->private_impl.f_chunk_type & 32u) == 0u)) {
-+        self->private_impl.f_chunk_type_array[0u] = ((uint8_t)((self->private_impl.f_chunk_type >> 0u)));
-+        self->private_impl.f_chunk_type_array[1u] = ((uint8_t)((self->private_impl.f_chunk_type >> 8u)));
-+        self->private_impl.f_chunk_type_array[2u] = ((uint8_t)((self->private_impl.f_chunk_type >> 16u)));
-+        self->private_impl.f_chunk_type_array[3u] = ((uint8_t)((self->private_impl.f_chunk_type >> 24u)));
-+        wuffs_private_impl__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
-+            sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
-+        wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4));
-+      }
-+      while (true) {
-+        v_mark = ((uint64_t)(iop_a_src - io0_a_src));
-+        {
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          wuffs_base__status t_4 = wuffs_png__decoder__decode_other_chunk(self, a_src, false);
-+          v_status = t_4;
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+        }
-+        if ( ! self->private_impl.f_ignore_checksum && ((self->private_impl.f_chunk_type & 32u) == 0u)) {
-+          v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_private_impl__io__since(v_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
-+        }
-+        if (wuffs_base__status__is_ok(&v_status)) {
-+          break;
-+        }
-+        status = v_status;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
-+      }
-+      if (self->private_impl.f_metadata_fourcc != 0u) {
-+        self->private_impl.f_call_sequence = 16u;
-+        status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
-+        goto ok;
-+      }
-       {
--        wuffs_base__status t_0 = wuffs_netpbm__decoder__do_decode_image_config(self, a_dst, a_src);
--        v_status = t_0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
-+        uint32_t t_5;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+          t_5 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+          iop_a_src += 4;
-+        } else {
-+          self->private_data.s_do_decode_image_config.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+            uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFFu));
-+            *scratch >>= 8;
-+            *scratch <<= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5);
-+            if (num_bits_5 == 24) {
-+              t_5 = ((uint32_t)(*scratch >> 32));
-+              break;
-+            }
-+            num_bits_5 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_5));
-+          }
-+        }
-+        v_checksum_want = t_5;
-       }
--      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_netpbm__error__truncated_input);
-+      if ( ! self->private_impl.f_ignore_checksum && ((self->private_impl.f_chunk_type & 32u) == 0u) && (v_checksum_have != v_checksum_want)) {
-+        status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
-         goto exit;
-       }
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-     }
-+    if ((self->private_impl.f_color_type == 3u) &&  ! self->private_impl.f_seen_plte) {
-+      status = wuffs_base__make_status(wuffs_png__error__missing_palette);
-+      goto exit;
-+    }
-+    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
-+    self->private_impl.f_first_config_io_position = self->private_impl.f_frame_config_io_position;
-+    if (a_dst != NULL) {
-+      wuffs_base__image_config__set(
-+          a_dst,
-+          self->private_impl.f_dst_pixfmt,
-+          0u,
-+          self->private_impl.f_width,
-+          self->private_impl.f_height,
-+          self->private_impl.f_first_config_io_position,
-+          ((self->private_impl.f_color_type <= 3u) &&  ! self->private_impl.f_seen_trns));
-+    }
-+    if ( ! self->private_impl.f_seen_actl) {
-+      self->private_impl.f_num_animation_frames_value = 1u;
-+      self->private_impl.f_first_rect_x0 = 0u;
-+      self->private_impl.f_first_rect_y0 = 0u;
-+      self->private_impl.f_first_rect_x1 = self->private_impl.f_width;
-+      self->private_impl.f_first_rect_y1 = self->private_impl.f_height;
-+      self->private_impl.f_first_duration = 0u;
-+      self->private_impl.f_first_disposal = 0u;
-+      self->private_impl.f_first_overwrite_instead_of_blend = false;
-+    }
-+    self->private_impl.f_call_sequence = 32u;
- 
-     ok:
--    self->private_impl.p_decode_image_config[0] = 0;
-+    self->private_impl.p_do_decode_image_config = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
-+  self->private_impl.p_do_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_do_decode_image_config.v_checksum_have = v_checksum_have;
- 
-   goto exit;
-   exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
-+
-   return status;
- }
- 
--// -------- func netpbm.decoder.do_decode_image_config
-+// -------- func png.decoder.decode_ihdr
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_netpbm__decoder__do_decode_image_config(
--    wuffs_netpbm__decoder* self,
--    wuffs_base__image_config* a_dst,
-+wuffs_png__decoder__decode_ihdr(
-+    wuffs_png__decoder* self,
-     wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint8_t v_c = 0;
--  uint32_t v_n = 0;
-+  uint32_t v_a32 = 0;
-+  uint8_t v_a8 = 0;
- 
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -49918,348 +63061,343 @@ wuffs_netpbm__decoder__do_decode_image_config(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_ihdr;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if (self->private_impl.f_call_sequence != 0u) {
--      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      uint32_t t_0;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_decode_ihdr.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_ihdr.scratch;
-+          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
-+          *scratch >>= 8;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
-+          if (num_bits_0 == 24) {
-+            t_0 = ((uint32_t)(*scratch >> 32));
-+            break;
-+          }
-+          num_bits_0 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_0));
-+        }
-+      }
-+      v_a32 = t_0;
-+    }
-+    if ((v_a32 == 0u) || (v_a32 > 2147483647u)) {
-+      status = wuffs_base__make_status(wuffs_png__error__bad_header);
-+      goto exit;
-+    } else if (v_a32 > 16777215u) {
-+      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
-       goto exit;
-     }
-+    self->private_impl.f_width = v_a32;
-     {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+      uint32_t t_1;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_decode_ihdr.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_ihdr.scratch;
-+          uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
-+          *scratch >>= 8;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
-+          if (num_bits_1 == 24) {
-+            t_1 = ((uint32_t)(*scratch >> 32));
-+            break;
-+          }
-+          num_bits_1 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_1));
-+        }
-+      }
-+      v_a32 = t_1;
-+    }
-+    if ((v_a32 == 0u) || (v_a32 > 2147483647u)) {
-+      status = wuffs_base__make_status(wuffs_png__error__bad_header);
-+      goto exit;
-+    } else if (v_a32 > 16777215u) {
-+      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
-+      goto exit;
-+    }
-+    self->private_impl.f_height = v_a32;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-       if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-         status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-         goto suspend;
-       }
--      uint8_t t_0 = *iop_a_src++;
--      v_c = t_0;
-+      uint8_t t_2 = *iop_a_src++;
-+      v_a8 = t_2;
-     }
--    if (v_c != 80u) {
--      status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
-+    if (v_a8 > 16u) {
-+      status = wuffs_base__make_status(wuffs_png__error__bad_header);
-       goto exit;
-     }
-+    self->private_impl.f_depth = v_a8;
-     {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-       if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-         status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-         goto suspend;
-       }
--      uint8_t t_1 = *iop_a_src++;
--      v_c = t_1;
-+      uint8_t t_3 = *iop_a_src++;
-+      v_a8 = t_3;
-     }
--    if ((v_c < 49u) || (55u < v_c)) {
--      status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
--      goto exit;
--    } else if (v_c == 53u) {
--      self->private_impl.f_pixfmt = 536870920u;
--    } else if (v_c == 54u) {
--      self->private_impl.f_pixfmt = 2684356744u;
--    } else {
--      status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file);
-+    if ((v_a8 == 1u) || (v_a8 == 5u) || (v_a8 > 6u)) {
-+      status = wuffs_base__make_status(wuffs_png__error__bad_header);
-       goto exit;
-     }
-+    self->private_impl.f_color_type = v_a8;
-     {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-       if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-         status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-         goto suspend;
-       }
--      uint8_t t_2 = *iop_a_src++;
--      v_c = t_2;
-+      uint8_t t_4 = *iop_a_src++;
-+      v_a8 = t_4;
-     }
--    if (v_c != 10u) {
--      status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
-+    if (v_a8 != 0u) {
-+      status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method);
-       goto exit;
-     }
--    while (true) {
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
--        }
--        uint8_t t_3 = *iop_a_src++;
--        v_c = t_3;
--      }
--      if ((v_c == 32u) || (v_c == 9u)) {
--        continue;
--      } else if (v_c == 35u) {
--        while (true) {
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint8_t t_4 = *iop_a_src++;
--            v_c = t_4;
--          }
--          if (v_c == 10u) {
--            break;
--          }
--        }
--        continue;
--      } else if ((v_c < 48u) || (57u < v_c)) {
--        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
--        goto exit;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-       }
--      self->private_impl.f_width = ((uint32_t)((v_c - 48u)));
--      break;
-+      uint8_t t_5 = *iop_a_src++;
-+      v_a8 = t_5;
-     }
--    while (true) {
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
--        }
--        uint8_t t_5 = *iop_a_src++;
--        v_c = t_5;
--      }
--      if ((v_c == 32u) || (v_c == 9u)) {
--        break;
--      } else if ((v_c < 48u) || (57u < v_c)) {
--        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
--        goto exit;
--      }
--      v_n = ((10u * self->private_impl.f_width) + ((uint32_t)((v_c - 48u))));
--      if (v_n > 16777215u) {
--        status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file);
--        goto exit;
--      }
--      self->private_impl.f_width = v_n;
-+    if (v_a8 != 0u) {
-+      status = wuffs_base__make_status(wuffs_png__error__bad_header);
-+      goto exit;
-     }
--    while (true) {
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
--        }
--        uint8_t t_6 = *iop_a_src++;
--        v_c = t_6;
--      }
--      if ((v_c == 32u) || (v_c == 9u)) {
--        continue;
--      } else if (v_c == 35u) {
--        while (true) {
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint8_t t_7 = *iop_a_src++;
--            v_c = t_7;
--          }
--          if (v_c == 10u) {
--            break;
--          }
--        }
--        continue;
--      } else if ((v_c < 48u) || (57u < v_c)) {
--        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
--        goto exit;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-       }
--      self->private_impl.f_height = ((uint32_t)((v_c - 48u)));
--      break;
-+      uint8_t t_6 = *iop_a_src++;
-+      v_a8 = t_6;
-     }
--    while (true) {
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
--        }
--        uint8_t t_8 = *iop_a_src++;
--        v_c = t_8;
--      }
--      if ((v_c == 32u) || (v_c == 9u) || (v_c == 13u)) {
--        continue;
--      } else if (v_c == 10u) {
--        break;
--      } else if ((v_c < 48u) || (57u < v_c)) {
--        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
--        goto exit;
--      }
--      v_n = ((10u * self->private_impl.f_height) + ((uint32_t)((v_c - 48u))));
--      if (v_n > 16777215u) {
--        status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file);
--        goto exit;
--      }
--      self->private_impl.f_height = v_n;
-+    if (v_a8 == 0u) {
-+      self->private_impl.f_interlace_pass = 0u;
-+    } else if (v_a8 == 1u) {
-+      self->private_impl.f_interlace_pass = 1u;
-+      self->private_impl.choosy_filter_and_swizzle = (
-+          &wuffs_png__decoder__filter_and_swizzle_tricky);
-+    } else {
-+      status = wuffs_base__make_status(wuffs_png__error__bad_header);
-+      goto exit;
-     }
--    while (true) {
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
--        }
--        uint8_t t_9 = *iop_a_src++;
--        v_c = t_9;
--      }
--      if ((v_c == 32u) || (v_c == 9u)) {
--        continue;
--      } else if (v_c == 35u) {
--        while (true) {
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint8_t t_10 = *iop_a_src++;
--            v_c = t_10;
--          }
--          if (v_c == 10u) {
--            break;
--          }
--        }
--        continue;
--      } else if ((v_c < 48u) || (57u < v_c)) {
--        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
--        goto exit;
--      }
--      self->private_impl.f_max_value = ((uint32_t)((v_c - 48u)));
--      break;
-+    self->private_impl.f_filter_distance = 0u;
-+    wuffs_png__decoder__assign_filter_distance(self);
-+    if (self->private_impl.f_filter_distance == 0u) {
-+      status = wuffs_base__make_status(wuffs_png__error__bad_header);
-+      goto exit;
-     }
--    while (true) {
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
--        }
--        uint8_t t_11 = *iop_a_src++;
--        v_c = t_11;
--      }
--      if ((v_c == 32u) || (v_c == 9u) || (v_c == 13u)) {
--        continue;
--      } else if (v_c == 10u) {
--        break;
--      } else if ((v_c < 48u) || (57u < v_c)) {
--        status = wuffs_base__make_status(wuffs_netpbm__error__bad_header);
--        goto exit;
--      }
--      v_n = ((10u * self->private_impl.f_max_value) + ((uint32_t)((v_c - 48u))));
--      if (v_n > 16777215u) {
--        status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file);
--        goto exit;
-+    self->private_impl.f_overall_workbuf_length = (((uint64_t)(self->private_impl.f_height)) * (1u + wuffs_png__decoder__calculate_bytes_per_row(self, self->private_impl.f_width)));
-+    wuffs_png__decoder__choose_filter_implementations(self);
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_decode_ihdr = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_ihdr = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func png.decoder.assign_filter_distance
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__assign_filter_distance(
-+    wuffs_png__decoder* self) {
-+  if (self->private_impl.f_depth < 8u) {
-+    if ((self->private_impl.f_depth != 1u) && (self->private_impl.f_depth != 2u) && (self->private_impl.f_depth != 4u)) {
-+      return wuffs_base__make_empty_struct();
-+    } else if (self->private_impl.f_color_type == 0u) {
-+      self->private_impl.f_dst_pixfmt = 536870920u;
-+      self->private_impl.f_src_pixfmt = 536870920u;
-+    } else if (self->private_impl.f_color_type == 3u) {
-+      self->private_impl.f_dst_pixfmt = 2198077448u;
-+      self->private_impl.f_src_pixfmt = 2198077448u;
-+    } else {
-+      return wuffs_base__make_empty_struct();
-+    }
-+    self->private_impl.f_filter_distance = 1u;
-+    self->private_impl.choosy_filter_and_swizzle = (
-+        &wuffs_png__decoder__filter_and_swizzle_tricky);
-+  } else if (self->private_impl.f_color_type == 0u) {
-+    if (self->private_impl.f_depth == 8u) {
-+      self->private_impl.f_dst_pixfmt = 536870920u;
-+      self->private_impl.f_src_pixfmt = 536870920u;
-+      self->private_impl.f_filter_distance = 1u;
-+    } else if (self->private_impl.f_depth == 16u) {
-+      if (self->private_impl.f_interlace_pass == 0u) {
-+        self->private_impl.f_dst_pixfmt = 536870923u;
-+        self->private_impl.f_src_pixfmt = 537919499u;
-+      } else {
-+        self->private_impl.f_dst_pixfmt = 2164308923u;
-+        self->private_impl.f_src_pixfmt = 2164308923u;
-       }
--      self->private_impl.f_max_value = v_n;
-+      self->private_impl.f_filter_distance = 2u;
-     }
--    if (self->private_impl.f_max_value != 255u) {
--      status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file);
--      goto exit;
-+  } else if (self->private_impl.f_color_type == 2u) {
-+    if (self->private_impl.f_depth == 8u) {
-+      self->private_impl.f_dst_pixfmt = 2147485832u;
-+      self->private_impl.f_src_pixfmt = 2684356744u;
-+      self->private_impl.f_filter_distance = 3u;
-+    } else if (self->private_impl.f_depth == 16u) {
-+      self->private_impl.f_dst_pixfmt = 2164308923u;
-+      self->private_impl.f_src_pixfmt = 2164308923u;
-+      self->private_impl.f_filter_distance = 6u;
-+      self->private_impl.choosy_filter_and_swizzle = (
-+          &wuffs_png__decoder__filter_and_swizzle_tricky);
-     }
--    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
--    if (a_dst != NULL) {
--      wuffs_base__image_config__set(
--          a_dst,
--          self->private_impl.f_pixfmt,
--          0u,
--          self->private_impl.f_width,
--          self->private_impl.f_height,
--          self->private_impl.f_frame_config_io_position,
--          false);
-+  } else if (self->private_impl.f_color_type == 3u) {
-+    if (self->private_impl.f_depth == 8u) {
-+      self->private_impl.f_dst_pixfmt = 2198077448u;
-+      self->private_impl.f_src_pixfmt = 2198077448u;
-+      self->private_impl.f_filter_distance = 1u;
-+    }
-+  } else if (self->private_impl.f_color_type == 4u) {
-+    if (self->private_impl.f_depth == 8u) {
-+      self->private_impl.f_dst_pixfmt = 553648264u;
-+      self->private_impl.f_src_pixfmt = 553648264u;
-+      self->private_impl.f_filter_distance = 2u;
-+    } else if (self->private_impl.f_depth == 16u) {
-+      self->private_impl.f_dst_pixfmt = 2164308923u;
-+      self->private_impl.f_src_pixfmt = 2164308923u;
-+      self->private_impl.f_filter_distance = 4u;
-+      self->private_impl.choosy_filter_and_swizzle = (
-+          &wuffs_png__decoder__filter_and_swizzle_tricky);
-+    }
-+  } else if (self->private_impl.f_color_type == 6u) {
-+    if (self->private_impl.f_depth == 8u) {
-+      self->private_impl.f_dst_pixfmt = 2164295816u;
-+      self->private_impl.f_src_pixfmt = 2701166728u;
-+      self->private_impl.f_filter_distance = 4u;
-+    } else if (self->private_impl.f_depth == 16u) {
-+      self->private_impl.f_dst_pixfmt = 2164308923u;
-+      self->private_impl.f_src_pixfmt = 2164308923u;
-+      self->private_impl.f_filter_distance = 8u;
-+      self->private_impl.choosy_filter_and_swizzle = (
-+          &wuffs_png__decoder__filter_and_swizzle_tricky);
-     }
--    self->private_impl.f_call_sequence = 32u;
--
--    goto ok;
--    ok:
--    self->private_impl.p_do_decode_image_config[0] = 0;
--    goto exit;
--  }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
--
--  return status;
-+  return wuffs_base__make_empty_struct();
- }
- 
--// -------- func netpbm.decoder.decode_frame_config
-+// -------- func png.decoder.calculate_bytes_per_row
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_netpbm__decoder__decode_frame_config(
--    wuffs_netpbm__decoder* self,
--    wuffs_base__frame_config* a_dst,
--    wuffs_base__io_buffer* a_src) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--  if (!a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 2)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
--  }
--  self->private_impl.active_coroutine = 0;
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
--
--  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    while (true) {
--      {
--        wuffs_base__status t_0 = wuffs_netpbm__decoder__do_decode_frame_config(self, a_dst, a_src);
--        v_status = t_0;
--      }
--      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_netpbm__error__truncated_input);
--        goto exit;
--      }
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
--    }
-+static uint64_t
-+wuffs_png__decoder__calculate_bytes_per_row(
-+    const wuffs_png__decoder* self,
-+    uint32_t a_width) {
-+  uint64_t v_bytes_per_channel = 0;
- 
--    ok:
--    self->private_impl.p_decode_frame_config[0] = 0;
--    goto exit;
-+  if (self->private_impl.f_depth == 1u) {
-+    return ((uint64_t)(((a_width + 7u) / 8u)));
-+  } else if (self->private_impl.f_depth == 2u) {
-+    return ((uint64_t)(((a_width + 3u) / 4u)));
-+  } else if (self->private_impl.f_depth == 4u) {
-+    return ((uint64_t)(((a_width + 1u) / 2u)));
-   }
-+  v_bytes_per_channel = ((uint64_t)(((uint8_t)(self->private_impl.f_depth >> 3u))));
-+  return (((uint64_t)(a_width)) * v_bytes_per_channel * ((uint64_t)(WUFFS_PNG__NUM_CHANNELS[self->private_impl.f_color_type])));
-+}
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
-+// -------- func png.decoder.choose_filter_implementations
- 
--  goto exit;
--  exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_png__decoder__choose_filter_implementations(
-+    wuffs_png__decoder* self) {
-+  if (self->private_impl.f_filter_distance == 3u) {
-+    self->private_impl.choosy_filter_1 = (
-+        &wuffs_png__decoder__filter_1_distance_3_fallback);
-+    self->private_impl.choosy_filter_3 = (
-+        &wuffs_png__decoder__filter_3_distance_3_fallback);
-+    self->private_impl.choosy_filter_4 = (
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
-+        wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_4_distance_3_arm_neon :
-+#endif
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_4_distance_3_x86_sse42 :
-+#endif
-+        &wuffs_png__decoder__filter_4_distance_3_fallback);
-+  } else if (self->private_impl.f_filter_distance == 4u) {
-+    self->private_impl.choosy_filter_1 = (
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
-+        wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_1_distance_4_arm_neon :
-+#endif
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_1_distance_4_x86_sse42 :
-+#endif
-+        &wuffs_png__decoder__filter_1_distance_4_fallback);
-+    self->private_impl.choosy_filter_3 = (
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
-+        wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_3_distance_4_arm_neon :
-+#endif
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_3_distance_4_x86_sse42 :
-+#endif
-+        &wuffs_png__decoder__filter_3_distance_4_fallback);
-+    self->private_impl.choosy_filter_4 = (
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__ARM_NEON)
-+        wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_4_distance_4_arm_neon :
-+#endif
-+#if defined(WUFFS_PRIVATE_IMPL__CPU_ARCH__X86_64_V2)
-+        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_4_distance_4_x86_sse42 :
-+#endif
-+        &wuffs_png__decoder__filter_4_distance_4_fallback);
-   }
--  return status;
-+  return wuffs_base__make_empty_struct();
- }
- 
--// -------- func netpbm.decoder.do_decode_frame_config
-+// -------- func png.decoder.decode_other_chunk
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_netpbm__decoder__do_decode_frame_config(
--    wuffs_netpbm__decoder* self,
--    wuffs_base__frame_config* a_dst,
--    wuffs_base__io_buffer* a_src) {
-+wuffs_png__decoder__decode_other_chunk(
-+    wuffs_png__decoder* self,
-+    wuffs_base__io_buffer* a_src,
-+    bool a_framy) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
-   const uint8_t* iop_a_src = NULL;
-@@ -50273,62 +63411,218 @@ wuffs_netpbm__decoder__do_decode_frame_config(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_other_chunk;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if (self->private_impl.f_call_sequence == 32u) {
--    } else if (self->private_impl.f_call_sequence < 32u) {
--      if (a_src) {
--        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+    if ((self->private_impl.f_chunk_type == 1163152464u) &&  ! a_framy) {
-+      if (self->private_impl.f_seen_plte) {
-+        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+        goto exit;
-+      } else if (self->private_impl.f_color_type == 3u) {
-+        if (a_src) {
-+          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+        }
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        status = wuffs_png__decoder__decode_plte(self, a_src);
-+        if (a_src) {
-+          iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+        }
-+        if (status.repr) {
-+          goto suspend;
-+        }
-+      } else if ((self->private_impl.f_color_type == 2u) || (self->private_impl.f_color_type == 6u)) {
-+      } else {
-+        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+        goto exit;
-       }
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      status = wuffs_netpbm__decoder__do_decode_image_config(self, NULL, a_src);
--      if (a_src) {
--        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      self->private_impl.f_seen_plte = true;
-+    } else if ((self->private_impl.f_chunk_type & 32u) == 0u) {
-+      if (self->private_impl.f_chunk_type != 1413563465u) {
-+        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+        goto exit;
-       }
--      if (status.repr) {
--        goto suspend;
-+    }
-+    if (self->private_impl.f_chunk_type == 1716082789u) {
-+      if (self->private_impl.f_report_metadata_exif) {
-+        if (self->private_impl.f_seen_exif) {
-+          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+          goto exit;
-+        }
-+        if (a_src) {
-+          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+        }
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+        status = wuffs_png__decoder__decode_exif(self, a_src);
-+        if (a_src) {
-+          iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+        }
-+        if (status.repr) {
-+          goto suspend;
-+        }
-+        self->private_impl.f_seen_exif = true;
-       }
--    } else if (self->private_impl.f_call_sequence == 40u) {
--      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
--        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
--        goto exit;
-+    } else if ((self->private_impl.f_chunk_type == 1951945833u) || (self->private_impl.f_chunk_type == 1951942004u) || (self->private_impl.f_chunk_type == 1951945850u)) {
-+      if (self->private_impl.f_report_metadata_kvp) {
-+        self->private_impl.f_metadata_flavor = 4u;
-+        self->private_impl.f_metadata_fourcc = 1263947851u;
-+        self->private_impl.f_metadata_x = 0u;
-+        self->private_impl.f_metadata_y = 0u;
-+        self->private_impl.f_metadata_z = 0u;
-+      }
-+    } else if ( ! a_framy) {
-+      if (self->private_impl.f_chunk_type == 1280598881u) {
-+        if (self->private_impl.f_seen_actl) {
-+          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+          goto exit;
-+        }
-+        if (a_src) {
-+          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+        }
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+        status = wuffs_png__decoder__decode_actl(self, a_src);
-+        if (a_src) {
-+          iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+        }
-+        if (status.repr) {
-+          goto suspend;
-+        }
-+        self->private_impl.f_seen_actl = true;
-+      } else if (self->private_impl.f_chunk_type == 1297238115u) {
-+        if (self->private_impl.f_report_metadata_chrm) {
-+          if (self->private_impl.f_seen_chrm) {
-+            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+            goto exit;
-+          }
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+          status = wuffs_png__decoder__decode_chrm(self, a_src);
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+          if (status.repr) {
-+            goto suspend;
-+          }
-+          self->private_impl.f_seen_chrm = true;
-+        }
-+      } else if (self->private_impl.f_chunk_type == 1280598886u) {
-+        if (self->private_impl.f_seen_fctl) {
-+          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+          goto exit;
-+        }
-+        if (a_src) {
-+          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+        }
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+        status = wuffs_png__decoder__decode_fctl(self, a_src);
-+        if (a_src) {
-+          iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+        }
-+        if (status.repr) {
-+          goto suspend;
-+        }
-+        self->private_impl.f_seen_fctl = true;
-+      } else if (self->private_impl.f_chunk_type == 1095582055u) {
-+        if (self->private_impl.f_report_metadata_gama) {
-+          if (self->private_impl.f_seen_gama) {
-+            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+            goto exit;
-+          }
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+          status = wuffs_png__decoder__decode_gama(self, a_src);
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+          if (status.repr) {
-+            goto suspend;
-+          }
-+          self->private_impl.f_seen_gama = true;
-+        }
-+      } else if (self->private_impl.f_chunk_type == 1346585449u) {
-+        if (self->private_impl.f_report_metadata_iccp) {
-+          if (self->private_impl.f_seen_iccp) {
-+            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+            goto exit;
-+          }
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+          status = wuffs_png__decoder__decode_iccp(self, a_src);
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+          if (status.repr) {
-+            goto suspend;
-+          }
-+          self->private_impl.f_seen_iccp = true;
-+        }
-+      } else if (self->private_impl.f_chunk_type == 1111970419u) {
-+        if (self->private_impl.f_report_metadata_srgb) {
-+          if (self->private_impl.f_seen_srgb) {
-+            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+            goto exit;
-+          }
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+          status = wuffs_png__decoder__decode_srgb(self, a_src);
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+          if (status.repr) {
-+            goto suspend;
-+          }
-+          self->private_impl.f_seen_srgb = true;
-+        }
-+      } else if (self->private_impl.f_chunk_type == 1397641844u) {
-+        if (self->private_impl.f_seen_trns || ((self->private_impl.f_color_type == 3u) &&  ! self->private_impl.f_seen_plte)) {
-+          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+          goto exit;
-+        } else if (self->private_impl.f_color_type > 3u) {
-+        } else {
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+          status = wuffs_png__decoder__decode_trns(self, a_src);
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+          if (status.repr) {
-+            goto suspend;
-+          }
-+        }
-+        self->private_impl.f_seen_trns = true;
-       }
--    } else if (self->private_impl.f_call_sequence == 64u) {
--      self->private_impl.f_call_sequence = 96u;
--      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--      goto ok;
--    } else {
--      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--      goto ok;
-     }
--    if (a_dst != NULL) {
--      wuffs_base__frame_config__set(
--          a_dst,
--          wuffs_base__utility__make_rect_ie_u32(
--          0u,
--          0u,
--          self->private_impl.f_width,
--          self->private_impl.f_height),
--          ((wuffs_base__flicks)(0u)),
--          0u,
--          self->private_impl.f_frame_config_io_position,
--          0u,
--          false,
--          false,
--          0u);
-+    if (self->private_impl.f_metadata_fourcc == 0u) {
-+      self->private_data.s_decode_other_chunk.scratch = self->private_impl.f_chunk_length;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
-+      if (self->private_data.s_decode_other_chunk.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+        self->private_data.s_decode_other_chunk.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+        iop_a_src = io2_a_src;
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      iop_a_src += self->private_data.s_decode_other_chunk.scratch;
-     }
--    self->private_impl.f_call_sequence = 64u;
- 
-+    goto ok;
-     ok:
--    self->private_impl.p_do_decode_frame_config[0] = 0;
-+    self->private_impl.p_decode_other_chunk = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.p_decode_other_chunk = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
-   goto exit;
-   exit:
-@@ -50339,181 +63633,130 @@ wuffs_netpbm__decoder__do_decode_frame_config(
-   return status;
- }
- 
--// -------- func netpbm.decoder.decode_frame
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_netpbm__decoder__decode_frame(
--    wuffs_netpbm__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--  if (!a_dst || !a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 3)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
--  }
--  self->private_impl.active_coroutine = 0;
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
--
--  uint32_t coro_susp_point = self->private_impl.p_decode_frame[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    while (true) {
--      {
--        wuffs_base__status t_0 = wuffs_netpbm__decoder__do_decode_frame(self,
--            a_dst,
--            a_src,
--            a_blend,
--            a_workbuf,
--            a_opts);
--        v_status = t_0;
--      }
--      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_netpbm__error__truncated_input);
--        goto exit;
--      }
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
--    }
--
--    ok:
--    self->private_impl.p_decode_frame[0] = 0;
--    goto exit;
--  }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
--
--  goto exit;
--  exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--  }
--  return status;
--}
--
--// -------- func netpbm.decoder.do_decode_frame
-+// -------- func png.decoder.decode_actl
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_netpbm__decoder__do_decode_frame(
--    wuffs_netpbm__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts) {
-+wuffs_png__decoder__decode_actl(
-+    wuffs_png__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_actl;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if (self->private_impl.f_call_sequence == 64u) {
--    } else if (self->private_impl.f_call_sequence < 64u) {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      status = wuffs_netpbm__decoder__do_decode_frame_config(self, NULL, a_src);
--      if (status.repr) {
--        goto suspend;
--      }
--    } else {
--      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--      goto ok;
-+    if (self->private_impl.f_chunk_length != 8u) {
-+      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+      goto exit;
-+    } else if (self->private_impl.f_interlace_pass > 0u) {
-+      status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
-+      goto exit;
-     }
--    self->private_impl.f_dst_x = 0u;
--    self->private_impl.f_dst_y = 0u;
--    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
--        wuffs_base__pixel_buffer__pixel_format(a_dst),
--        wuffs_base__pixel_buffer__palette(a_dst),
--        wuffs_base__utility__make_pixel_format(self->private_impl.f_pixfmt),
--        wuffs_base__utility__empty_slice_u8(),
--        a_blend);
--    if ( ! wuffs_base__status__is_ok(&v_status)) {
--      status = v_status;
--      if (wuffs_base__status__is_error(&status)) {
--        goto exit;
--      } else if (wuffs_base__status__is_suspension(&status)) {
--        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
--        goto exit;
-+    self->private_impl.f_chunk_length = 0u;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      uint32_t t_0;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_decode_actl.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_actl.scratch;
-+          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
-+          *scratch >>= 8;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
-+          if (num_bits_0 == 24) {
-+            t_0 = ((uint32_t)(*scratch >> 32));
-+            break;
-+          }
-+          num_bits_0 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_0));
-+        }
-       }
--      goto ok;
-+      self->private_impl.f_num_animation_frames_value = t_0;
-     }
--    while (true) {
--      v_status = wuffs_netpbm__decoder__swizzle(self, a_dst, a_src);
--      if (wuffs_base__status__is_ok(&v_status)) {
--        break;
--      } else if (v_status.repr != wuffs_netpbm__note__internal_note_short_read) {
--        status = v_status;
--        if (wuffs_base__status__is_error(&status)) {
--          goto exit;
--        } else if (wuffs_base__status__is_suspension(&status)) {
--          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
--          goto exit;
-+    if (self->private_impl.f_num_animation_frames_value == 0u) {
-+      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+      goto exit;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+      uint32_t t_1;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_decode_actl.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_actl.scratch;
-+          uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
-+          *scratch >>= 8;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
-+          if (num_bits_1 == 24) {
-+            t_1 = ((uint32_t)(*scratch >> 32));
-+            break;
-+          }
-+          num_bits_1 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_1));
-         }
--        goto ok;
-       }
--      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
-+      self->private_impl.f_num_animation_loops_value = t_1;
-     }
--    self->private_impl.f_call_sequence = 96u;
- 
-+    goto ok;
-     ok:
--    self->private_impl.p_do_decode_frame[0] = 0;
-+    self->private_impl.p_decode_actl = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.p_decode_actl = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
-   goto exit;
-   exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-   return status;
- }
- 
--// -------- func netpbm.decoder.swizzle
-+// -------- func png.decoder.decode_chrm
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_netpbm__decoder__swizzle(
--    wuffs_netpbm__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
-+wuffs_png__decoder__decode_chrm(
-+    wuffs_png__decoder* self,
-     wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  wuffs_base__pixel_format v_dst_pixfmt = {0};
--  uint32_t v_dst_bits_per_pixel = 0;
--  uint32_t v_dst_bytes_per_pixel = 0;
--  uint64_t v_dst_bytes_per_row = 0;
--  uint32_t v_src_bytes_per_pixel = 0;
--  wuffs_base__table_u8 v_tab = {0};
--  wuffs_base__slice_u8 v_dst = {0};
--  uint64_t v_i = 0;
--  uint64_t v_j = 0;
--  uint64_t v_n = 0;
-+  uint64_t v_u = 0;
- 
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -50526,543 +63769,337 @@ wuffs_netpbm__decoder__swizzle(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
--  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
--  if ((v_dst_bits_per_pixel & 7u) != 0u) {
--    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
--    goto exit;
--  }
--  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
--  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
--  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
--  while (true) {
--    if (self->private_impl.f_dst_x == self->private_impl.f_width) {
--      self->private_impl.f_dst_x = 0u;
--      self->private_impl.f_dst_y += 1u;
--      if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
--        break;
--      }
--    }
--    v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
--    if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
--      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
-+  uint32_t coro_susp_point = self->private_impl.p_decode_chrm;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_chunk_length != 32u) {
-+      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+      goto exit;
-     }
--    v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
--    if (v_i >= ((uint64_t)(v_dst.len))) {
--      v_src_bytes_per_pixel = 1u;
--      if (self->private_impl.f_pixfmt == 2684356744u) {
--        v_src_bytes_per_pixel = 3u;
--      }
--      v_n = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(v_src_bytes_per_pixel)));
--      v_n = wuffs_base__u64__min(v_n, ((uint64_t)(((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x)))));
--      v_j = v_n;
--      while (v_j >= 8u) {
--        if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 8u)))) {
--          iop_a_src += (v_src_bytes_per_pixel * 8u);
-+    self->private_impl.f_chunk_length = 0u;
-+    self->private_impl.f_metadata_flavor = 5u;
-+    self->private_impl.f_metadata_fourcc = 1128813133u;
-+    self->private_impl.f_metadata_x = 0u;
-+    self->private_impl.f_metadata_y = 0u;
-+    self->private_impl.f_metadata_z = 0u;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      uint64_t t_0;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_0 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_decode_chrm.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_chrm.scratch;
-+          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
-+          *scratch >>= 8;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
-+          if (num_bits_0 == 24) {
-+            t_0 = ((uint64_t)(*scratch >> 32));
-+            break;
-+          }
-+          num_bits_0 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_0));
-         }
--        v_j -= 8u;
-       }
--      while (v_j > 0u) {
--        if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 1u)))) {
--          iop_a_src += (v_src_bytes_per_pixel * 1u);
-+      v_u = t_0;
-+    }
-+    self->private_impl.f_metadata_x |= ((16777215u & v_u) << 0u);
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+      uint64_t t_1;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_1 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_decode_chrm.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_chrm.scratch;
-+          uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
-+          *scratch >>= 8;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
-+          if (num_bits_1 == 24) {
-+            t_1 = ((uint64_t)(*scratch >> 32));
-+            break;
-+          }
-+          num_bits_1 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_1));
-         }
--        v_j -= 1u;
-       }
--    } else {
--      v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
--          &self->private_impl.f_swizzler,
--          wuffs_base__slice_u8__subslice_i(v_dst, v_i),
--          wuffs_base__pixel_buffer__palette(a_dst),
--          &iop_a_src,
--          io2_a_src);
--    }
--    if (v_n == 0u) {
--      status = wuffs_base__make_status(wuffs_netpbm__note__internal_note_short_read);
--      goto ok;
-+      v_u = t_1;
-     }
--    wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
--  }
--  status = wuffs_base__make_status(NULL);
--  goto ok;
--
--  ok:
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
--
--  return status;
--}
--
--// -------- func netpbm.decoder.frame_dirty_rect
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
--wuffs_netpbm__decoder__frame_dirty_rect(
--    const wuffs_netpbm__decoder* self) {
--  if (!self) {
--    return wuffs_base__utility__empty_rect_ie_u32();
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_rect_ie_u32();
--  }
--
--  return wuffs_base__utility__make_rect_ie_u32(
--      0u,
--      0u,
--      self->private_impl.f_width,
--      self->private_impl.f_height);
--}
--
--// -------- func netpbm.decoder.num_animation_loops
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_netpbm__decoder__num_animation_loops(
--    const wuffs_netpbm__decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
--
--  return 0u;
--}
--
--// -------- func netpbm.decoder.num_decoded_frame_configs
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_netpbm__decoder__num_decoded_frame_configs(
--    const wuffs_netpbm__decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
--
--  if (self->private_impl.f_call_sequence > 32u) {
--    return 1u;
--  }
--  return 0u;
--}
--
--// -------- func netpbm.decoder.num_decoded_frames
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_netpbm__decoder__num_decoded_frames(
--    const wuffs_netpbm__decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
--
--  if (self->private_impl.f_call_sequence > 64u) {
--    return 1u;
--  }
--  return 0u;
--}
--
--// -------- func netpbm.decoder.restart_frame
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_netpbm__decoder__restart_frame(
--    wuffs_netpbm__decoder* self,
--    uint64_t a_index,
--    uint64_t a_io_position) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--
--  if (self->private_impl.f_call_sequence < 32u) {
--    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
--  }
--  if ((a_index != 0u) || (a_io_position != self->private_impl.f_frame_config_io_position)) {
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  self->private_impl.f_call_sequence = 40u;
--  return wuffs_base__make_status(NULL);
--}
--
--// -------- func netpbm.decoder.set_report_metadata
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_netpbm__decoder__set_report_metadata(
--    wuffs_netpbm__decoder* self,
--    uint32_t a_fourcc,
--    bool a_report) {
--  return wuffs_base__make_empty_struct();
--}
--
--// -------- func netpbm.decoder.tell_me_more
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_netpbm__decoder__tell_me_more(
--    wuffs_netpbm__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__more_information* a_minfo,
--    wuffs_base__io_buffer* a_src) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--  if (!a_dst || !a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 4)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
--  }
--  self->private_impl.active_coroutine = 0;
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  status = wuffs_base__make_status(wuffs_base__error__no_more_information);
--  goto exit;
--
--  goto ok;
--  ok:
--  goto exit;
--  exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--  }
--  return status;
--}
--
--// -------- func netpbm.decoder.history_retain_length
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_netpbm__decoder__history_retain_length(
--    const wuffs_netpbm__decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
--
--  return 0u;
--}
--
--// -------- func netpbm.decoder.workbuf_len
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_netpbm__decoder__workbuf_len(
--    const wuffs_netpbm__decoder* self) {
--  if (!self) {
--    return wuffs_base__utility__empty_range_ii_u64();
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_range_ii_u64();
--  }
--
--  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
--}
--
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM)
--
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE)
--
--// ---------------- Status Codes Implementations
--
--const char wuffs_nie__error__bad_header[] = "#nie: bad header";
--const char wuffs_nie__error__truncated_input[] = "#nie: truncated input";
--const char wuffs_nie__error__unsupported_nie_file[] = "#nie: unsupported NIE file";
--const char wuffs_nie__note__internal_note_short_read[] = "@nie: internal note: short read";
--
--// ---------------- Private Consts
--
--// ---------------- Private Initializer Prototypes
--
--// ---------------- Private Function Prototypes
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_nie__decoder__do_decode_image_config(
--    wuffs_nie__decoder* self,
--    wuffs_base__image_config* a_dst,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_nie__decoder__do_decode_frame_config(
--    wuffs_nie__decoder* self,
--    wuffs_base__frame_config* a_dst,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_nie__decoder__do_decode_frame(
--    wuffs_nie__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_nie__decoder__swizzle(
--    wuffs_nie__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src);
--
--// ---------------- VTables
--
--const wuffs_base__image_decoder__func_ptrs
--wuffs_nie__decoder__func_ptrs_for__wuffs_base__image_decoder = {
--  (wuffs_base__status(*)(void*,
--      wuffs_base__pixel_buffer*,
--      wuffs_base__io_buffer*,
--      wuffs_base__pixel_blend,
--      wuffs_base__slice_u8,
--      wuffs_base__decode_frame_options*))(&wuffs_nie__decoder__decode_frame),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__frame_config*,
--      wuffs_base__io_buffer*))(&wuffs_nie__decoder__decode_frame_config),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__image_config*,
--      wuffs_base__io_buffer*))(&wuffs_nie__decoder__decode_image_config),
--  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_nie__decoder__frame_dirty_rect),
--  (uint64_t(*)(const void*,
--      uint32_t))(&wuffs_nie__decoder__get_quirk),
--  (uint64_t(*)(const void*))(&wuffs_nie__decoder__history_retain_length),
--  (uint32_t(*)(const void*))(&wuffs_nie__decoder__num_animation_loops),
--  (uint64_t(*)(const void*))(&wuffs_nie__decoder__num_decoded_frame_configs),
--  (uint64_t(*)(const void*))(&wuffs_nie__decoder__num_decoded_frames),
--  (wuffs_base__status(*)(void*,
--      uint64_t,
--      uint64_t))(&wuffs_nie__decoder__restart_frame),
--  (wuffs_base__status(*)(void*,
--      uint32_t,
--      uint64_t))(&wuffs_nie__decoder__set_quirk),
--  (wuffs_base__empty_struct(*)(void*,
--      uint32_t,
--      bool))(&wuffs_nie__decoder__set_report_metadata),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__io_buffer*,
--      wuffs_base__more_information*,
--      wuffs_base__io_buffer*))(&wuffs_nie__decoder__tell_me_more),
--  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_nie__decoder__workbuf_len),
--};
--
--// ---------------- Initializer Implementations
--
--wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_nie__decoder__initialize(
--    wuffs_nie__decoder* self,
--    size_t sizeof_star_self,
--    uint64_t wuffs_version,
--    uint32_t options){
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (sizeof(*self) != sizeof_star_self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
--  }
--  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
--      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
--    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
--  }
--
--  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
--    // The whole point of this if-check is to detect an uninitialized *self.
--    // We disable the warning on GCC. Clang-5.0 does not have this warning.
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
--#endif
--    if (self->private_impl.magic != 0) {
--      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+    self->private_impl.f_metadata_x |= ((16777215u & v_u) << 24u);
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+      uint64_t t_2;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_2 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_decode_chrm.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_chrm.scratch;
-+          uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu));
-+          *scratch >>= 8;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
-+          if (num_bits_2 == 24) {
-+            t_2 = ((uint64_t)(*scratch >> 32));
-+            break;
-+          }
-+          num_bits_2 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_2));
-+        }
-+      }
-+      v_u = t_2;
-     }
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--  } else {
--    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
--      memset(self, 0, sizeof(*self));
--      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
--    } else {
--      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+    self->private_impl.f_metadata_x |= ((uint64_t)((16777215u & v_u) << 48u));
-+    self->private_impl.f_metadata_y |= ((16777215u & v_u) >> 16u);
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+      uint64_t t_3;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_3 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_decode_chrm.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_chrm.scratch;
-+          uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu));
-+          *scratch >>= 8;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
-+          if (num_bits_3 == 24) {
-+            t_3 = ((uint64_t)(*scratch >> 32));
-+            break;
-+          }
-+          num_bits_3 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_3));
-+        }
-+      }
-+      v_u = t_3;
-     }
--  }
--
--  self->private_impl.magic = WUFFS_BASE__MAGIC;
--  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
--      wuffs_base__image_decoder__vtable_name;
--  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
--      (const void*)(&wuffs_nie__decoder__func_ptrs_for__wuffs_base__image_decoder);
--  return wuffs_base__make_status(NULL);
--}
--
--wuffs_nie__decoder*
--wuffs_nie__decoder__alloc(void) {
--  wuffs_nie__decoder* x =
--      (wuffs_nie__decoder*)(calloc(sizeof(wuffs_nie__decoder), 1));
--  if (!x) {
--    return NULL;
--  }
--  if (wuffs_nie__decoder__initialize(
--      x, sizeof(wuffs_nie__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
--    free(x);
--    return NULL;
--  }
--  return x;
--}
--
--size_t
--sizeof__wuffs_nie__decoder(void) {
--  return sizeof(wuffs_nie__decoder);
--}
--
--// ---------------- Function Implementations
--
--// -------- func nie.decoder.get_quirk
-+    self->private_impl.f_metadata_y |= ((16777215u & v_u) << 8u);
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+      uint64_t t_4;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_4 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_decode_chrm.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_chrm.scratch;
-+          uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFFu));
-+          *scratch >>= 8;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4);
-+          if (num_bits_4 == 24) {
-+            t_4 = ((uint64_t)(*scratch >> 32));
-+            break;
-+          }
-+          num_bits_4 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_4));
-+        }
-+      }
-+      v_u = t_4;
-+    }
-+    self->private_impl.f_metadata_y |= ((16777215u & v_u) << 32u);
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
-+      uint64_t t_5;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_5 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_decode_chrm.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_chrm.scratch;
-+          uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFFu));
-+          *scratch >>= 8;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5);
-+          if (num_bits_5 == 24) {
-+            t_5 = ((uint64_t)(*scratch >> 32));
-+            break;
-+          }
-+          num_bits_5 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_5));
-+        }
-+      }
-+      v_u = t_5;
-+    }
-+    self->private_impl.f_metadata_y |= ((uint64_t)((16777215u & v_u) << 56u));
-+    self->private_impl.f_metadata_z |= ((16777215u & v_u) >> 8u);
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
-+      uint64_t t_6;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_6 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_decode_chrm.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_chrm.scratch;
-+          uint32_t num_bits_6 = ((uint32_t)(*scratch & 0xFFu));
-+          *scratch >>= 8;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_6);
-+          if (num_bits_6 == 24) {
-+            t_6 = ((uint64_t)(*scratch >> 32));
-+            break;
-+          }
-+          num_bits_6 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_6));
-+        }
-+      }
-+      v_u = t_6;
-+    }
-+    self->private_impl.f_metadata_z |= ((16777215u & v_u) << 16u);
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
-+      uint64_t t_7;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_7 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_decode_chrm.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_chrm.scratch;
-+          uint32_t num_bits_7 = ((uint32_t)(*scratch & 0xFFu));
-+          *scratch >>= 8;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_7);
-+          if (num_bits_7 == 24) {
-+            t_7 = ((uint64_t)(*scratch >> 32));
-+            break;
-+          }
-+          num_bits_7 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_7));
-+        }
-+      }
-+      v_u = t_7;
-+    }
-+    self->private_impl.f_metadata_z |= ((16777215u & v_u) << 40u);
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_nie__decoder__get_quirk(
--    const wuffs_nie__decoder* self,
--    uint32_t a_key) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
-+    goto ok;
-+    ok:
-+    self->private_impl.p_decode_chrm = 0;
-+    goto exit;
-   }
- 
--  return 0u;
--}
--
--// -------- func nie.decoder.set_quirk
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_chrm = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_nie__decoder__set_quirk(
--    wuffs_nie__decoder* self,
--    uint32_t a_key,
--    uint64_t a_value) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
- 
--  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+  return status;
- }
- 
--// -------- func nie.decoder.decode_image_config
-+// -------- func png.decoder.decode_exif
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_nie__decoder__decode_image_config(
--    wuffs_nie__decoder* self,
--    wuffs_base__image_config* a_dst,
-+static wuffs_base__status
-+wuffs_png__decoder__decode_exif(
-+    wuffs_png__decoder* self,
-     wuffs_base__io_buffer* a_src) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--  if (!a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 1)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
--  }
--  self->private_impl.active_coroutine = 0;
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
--
--  uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    while (true) {
--      {
--        wuffs_base__status t_0 = wuffs_nie__decoder__do_decode_image_config(self, a_dst, a_src);
--        v_status = t_0;
--      }
--      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_nie__error__truncated_input);
--        goto exit;
--      }
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
--    }
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
- 
--    ok:
--    self->private_impl.p_decode_image_config[0] = 0;
-+  if (self->private_impl.f_chunk_length < 4u) {
-+    status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-     goto exit;
-   }
-+  self->private_impl.f_metadata_flavor = 3u;
-+  self->private_impl.f_metadata_fourcc = 1163413830u;
-+  self->private_impl.f_metadata_x = 0u;
-+  self->private_impl.f_metadata_y = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
-+  self->private_impl.f_metadata_z = wuffs_base__u64__sat_add(self->private_impl.f_metadata_y, ((uint64_t)(self->private_impl.f_chunk_length)));
-+  self->private_impl.f_chunk_length = 0u;
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
--
-+  goto ok;
-+  ok:
-   goto exit;
-   exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
-+
-   return status;
- }
- 
--// -------- func nie.decoder.do_decode_image_config
-+// -------- func png.decoder.decode_fctl
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_nie__decoder__do_decode_image_config(
--    wuffs_nie__decoder* self,
--    wuffs_base__image_config* a_dst,
-+wuffs_png__decoder__decode_fctl(
-+    wuffs_png__decoder* self,
-     wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint32_t v_a = 0;
-+  uint32_t v_x0 = 0;
-+  uint32_t v_y0 = 0;
-+  uint32_t v_x1 = 0;
-+  uint32_t v_y1 = 0;
- 
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -51075,185 +64112,309 @@ wuffs_nie__decoder__do_decode_image_config(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_fctl;
-+  if (coro_susp_point) {
-+    v_x0 = self->private_data.s_decode_fctl.v_x0;
-+    v_x1 = self->private_data.s_decode_fctl.v_x1;
-+    v_y1 = self->private_data.s_decode_fctl.v_y1;
-+  }
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if (self->private_impl.f_call_sequence != 0u) {
--      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+    if (self->private_impl.f_chunk_length != 26u) {
-+      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-       goto exit;
-     }
-+    self->private_impl.f_chunk_length = 0u;
-     {
-       WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-       uint32_t t_0;
-       if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+        t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-         iop_a_src += 4;
-       } else {
--        self->private_data.s_do_decode_image_config[0].scratch = 0;
-+        self->private_data.s_decode_fctl.scratch = 0;
-         WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-         while (true) {
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
--          *scratch <<= 8;
-+          uint64_t* scratch = &self->private_data.s_decode_fctl.scratch;
-+          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
-           *scratch >>= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
-           if (num_bits_0 == 24) {
--            t_0 = ((uint32_t)(*scratch));
-+            t_0 = ((uint32_t)(*scratch >> 32));
-             break;
-           }
-           num_bits_0 += 8u;
--          *scratch |= ((uint64_t)(num_bits_0)) << 56;
-+          *scratch |= ((uint64_t)(num_bits_0));
-         }
-       }
--      v_a = t_0;
-+      v_x0 = t_0;
-     }
--    if (v_a != 1169146734u) {
--      status = wuffs_base__make_status(wuffs_nie__error__bad_header);
-+    if (v_x0 != self->private_impl.f_next_animation_seq_num) {
-+      status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number);
-+      goto exit;
-+    } else if (self->private_impl.f_next_animation_seq_num >= 4294967295u) {
-+      status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
-       goto exit;
-     }
-+    self->private_impl.f_next_animation_seq_num += 1u;
-     {
-       WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-       uint32_t t_1;
-       if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+        t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-         iop_a_src += 4;
-       } else {
--        self->private_data.s_do_decode_image_config[0].scratch = 0;
-+        self->private_data.s_decode_fctl.scratch = 0;
-         WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-         while (true) {
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
--          *scratch <<= 8;
-+          uint64_t* scratch = &self->private_data.s_decode_fctl.scratch;
-+          uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
-           *scratch >>= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
-           if (num_bits_1 == 24) {
--            t_1 = ((uint32_t)(*scratch));
-+            t_1 = ((uint32_t)(*scratch >> 32));
-             break;
-           }
-           num_bits_1 += 8u;
--          *scratch |= ((uint64_t)(num_bits_1)) << 56;
-+          *scratch |= ((uint64_t)(num_bits_1));
-         }
-       }
--      v_a = t_1;
--    }
--    if (v_a == 879649535u) {
--      self->private_impl.f_pixfmt = 2164295816u;
--    } else if (v_a == 946758399u) {
--      self->private_impl.f_pixfmt = 2164308923u;
--    } else if (v_a == 879780607u) {
--      status = wuffs_base__make_status(wuffs_nie__error__unsupported_nie_file);
--      goto exit;
--    } else if (v_a == 946889471u) {
--      status = wuffs_base__make_status(wuffs_nie__error__unsupported_nie_file);
--      goto exit;
--    } else {
--      status = wuffs_base__make_status(wuffs_nie__error__bad_header);
--      goto exit;
-+      v_x1 = t_1;
-     }
-     {
-       WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-       uint32_t t_2;
-       if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+        t_2 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-         iop_a_src += 4;
-       } else {
--        self->private_data.s_do_decode_image_config[0].scratch = 0;
-+        self->private_data.s_decode_fctl.scratch = 0;
-         WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-         while (true) {
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--          uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
--          *scratch <<= 8;
-+          uint64_t* scratch = &self->private_data.s_decode_fctl.scratch;
-+          uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu));
-           *scratch >>= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
-           if (num_bits_2 == 24) {
--            t_2 = ((uint32_t)(*scratch));
-+            t_2 = ((uint32_t)(*scratch >> 32));
-             break;
-           }
-           num_bits_2 += 8u;
--          *scratch |= ((uint64_t)(num_bits_2)) << 56;
-+          *scratch |= ((uint64_t)(num_bits_2));
-         }
-       }
--      v_a = t_2;
--    }
--    if (v_a > 2147483647u) {
--      status = wuffs_base__make_status(wuffs_nie__error__bad_header);
--      goto exit;
--    } else if (v_a > 16777215u) {
--      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
--      goto exit;
-+      v_y1 = t_2;
-     }
--    self->private_impl.f_width = v_a;
-     {
-       WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-       uint32_t t_3;
-       if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_3 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+        t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-         iop_a_src += 4;
-       } else {
--        self->private_data.s_do_decode_image_config[0].scratch = 0;
-+        self->private_data.s_decode_fctl.scratch = 0;
-         WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-         while (true) {
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--          uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
-+          uint64_t* scratch = &self->private_data.s_decode_fctl.scratch;
-+          uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu));
-+          *scratch >>= 8;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
-+          if (num_bits_3 == 24) {
-+            t_3 = ((uint32_t)(*scratch >> 32));
-+            break;
-+          }
-+          num_bits_3 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_3));
-+        }
-+      }
-+      v_x0 = t_3;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+      uint32_t t_4;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_4 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_decode_fctl.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_fctl.scratch;
-+          uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFFu));
-+          *scratch >>= 8;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4);
-+          if (num_bits_4 == 24) {
-+            t_4 = ((uint32_t)(*scratch >> 32));
-+            break;
-+          }
-+          num_bits_4 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_4));
-+        }
-+      }
-+      v_y0 = t_4;
-+    }
-+    v_x1 += v_x0;
-+    v_y1 += v_y0;
-+    if ((v_x0 >= v_x1) ||
-+        (v_x0 > self->private_impl.f_width) ||
-+        (v_x1 > self->private_impl.f_width) ||
-+        (v_y0 >= v_y1) ||
-+        (v_y0 > self->private_impl.f_height) ||
-+        (v_y1 > self->private_impl.f_height)) {
-+      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+      goto exit;
-+    }
-+    self->private_impl.f_frame_rect_x0 = v_x0;
-+    self->private_impl.f_frame_rect_y0 = v_y0;
-+    self->private_impl.f_frame_rect_x1 = v_x1;
-+    self->private_impl.f_frame_rect_y1 = v_y1;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
-+      uint32_t t_5;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+        t_5 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
-+        iop_a_src += 2;
-+      } else {
-+        self->private_data.s_decode_fctl.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_fctl.scratch;
-+          uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFFu));
-+          *scratch >>= 8;
-           *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5);
-+          if (num_bits_5 == 8) {
-+            t_5 = ((uint32_t)(*scratch >> 48));
-+            break;
-+          }
-+          num_bits_5 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_5));
-+        }
-+      }
-+      v_x0 = t_5;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
-+      uint32_t t_6;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+        t_6 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
-+        iop_a_src += 2;
-+      } else {
-+        self->private_data.s_decode_fctl.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_fctl.scratch;
-+          uint32_t num_bits_6 = ((uint32_t)(*scratch & 0xFFu));
-           *scratch >>= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
--          if (num_bits_3 == 24) {
--            t_3 = ((uint32_t)(*scratch));
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_6);
-+          if (num_bits_6 == 8) {
-+            t_6 = ((uint32_t)(*scratch >> 48));
-             break;
-           }
--          num_bits_3 += 8u;
--          *scratch |= ((uint64_t)(num_bits_3)) << 56;
-+          num_bits_6 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_6));
-         }
-       }
--      v_a = t_3;
-+      v_x1 = t_6;
-     }
--    if (v_a > 2147483647u) {
--      status = wuffs_base__make_status(wuffs_nie__error__bad_header);
-+    if (v_x1 <= 0u) {
-+      self->private_impl.f_frame_duration = (((uint64_t)(v_x0)) * 7056000u);
-+    } else {
-+      self->private_impl.f_frame_duration = ((((uint64_t)(v_x0)) * 705600000u) / ((uint64_t)(v_x1)));
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint32_t t_7 = *iop_a_src++;
-+      v_x0 = t_7;
-+    }
-+    if (v_x0 == 0u) {
-+      self->private_impl.f_frame_disposal = 0u;
-+    } else if (v_x0 == 1u) {
-+      self->private_impl.f_frame_disposal = 1u;
-+    } else if (v_x0 == 2u) {
-+      self->private_impl.f_frame_disposal = 2u;
-+    } else {
-+      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-       goto exit;
--    } else if (v_a > 16777215u) {
--      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint32_t t_8 = *iop_a_src++;
-+      v_x0 = t_8;
-+    }
-+    if (v_x0 == 0u) {
-+      self->private_impl.f_frame_overwrite_instead_of_blend = true;
-+    } else if (v_x0 == 1u) {
-+      self->private_impl.f_frame_overwrite_instead_of_blend = false;
-+    } else {
-+      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-       goto exit;
-     }
--    self->private_impl.f_height = v_a;
--    if (a_dst != NULL) {
--      wuffs_base__image_config__set(
--          a_dst,
--          self->private_impl.f_pixfmt,
--          0u,
--          self->private_impl.f_width,
--          self->private_impl.f_height,
--          16u,
--          false);
-+    if (self->private_impl.f_num_decoded_frame_configs_value == 0u) {
-+      self->private_impl.f_first_rect_x0 = self->private_impl.f_frame_rect_x0;
-+      self->private_impl.f_first_rect_y0 = self->private_impl.f_frame_rect_y0;
-+      self->private_impl.f_first_rect_x1 = self->private_impl.f_frame_rect_x1;
-+      self->private_impl.f_first_rect_y1 = self->private_impl.f_frame_rect_y1;
-+      self->private_impl.f_first_duration = self->private_impl.f_frame_duration;
-+      self->private_impl.f_first_disposal = self->private_impl.f_frame_disposal;
-+      self->private_impl.f_first_overwrite_instead_of_blend = self->private_impl.f_frame_overwrite_instead_of_blend;
-     }
--    self->private_impl.f_call_sequence = 32u;
- 
-     goto ok;
-     ok:
--    self->private_impl.p_do_decode_image_config[0] = 0;
-+    self->private_impl.p_decode_fctl = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.p_decode_fctl = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_fctl.v_x0 = v_x0;
-+  self->private_data.s_decode_fctl.v_x1 = v_x1;
-+  self->private_data.s_decode_fctl.v_y1 = v_y1;
- 
-   goto exit;
-   exit:
-@@ -51264,82 +64425,99 @@ wuffs_nie__decoder__do_decode_image_config(
-   return status;
- }
- 
--// -------- func nie.decoder.decode_frame_config
-+// -------- func png.decoder.decode_gama
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_nie__decoder__decode_frame_config(
--    wuffs_nie__decoder* self,
--    wuffs_base__frame_config* a_dst,
-+static wuffs_base__status
-+wuffs_png__decoder__decode_gama(
-+    wuffs_png__decoder* self,
-     wuffs_base__io_buffer* a_src) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--  if (!a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 2)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
--  }
--  self->private_impl.active_coroutine = 0;
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_gama;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    while (true) {
--      {
--        wuffs_base__status t_0 = wuffs_nie__decoder__do_decode_frame_config(self, a_dst, a_src);
--        v_status = t_0;
--      }
--      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_nie__error__truncated_input);
--        goto exit;
-+    if (self->private_impl.f_chunk_length != 4u) {
-+      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+      goto exit;
-+    }
-+    self->private_impl.f_chunk_length = 0u;
-+    self->private_impl.f_metadata_flavor = 5u;
-+    self->private_impl.f_metadata_fourcc = 1195461953u;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      uint64_t t_0;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_0 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_decode_gama.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_decode_gama.scratch;
-+          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
-+          *scratch >>= 8;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
-+          if (num_bits_0 == 24) {
-+            t_0 = ((uint64_t)(*scratch >> 32));
-+            break;
-+          }
-+          num_bits_0 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_0));
-+        }
-       }
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+      self->private_impl.f_metadata_x = t_0;
-     }
-+    self->private_impl.f_metadata_y = 0u;
-+    self->private_impl.f_metadata_z = 0u;
- 
-+    goto ok;
-     ok:
--    self->private_impl.p_decode_frame_config[0] = 0;
-+    self->private_impl.p_decode_gama = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
-+  self->private_impl.p_decode_gama = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
-   goto exit;
-   exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
-+
-   return status;
- }
- 
--// -------- func nie.decoder.do_decode_frame_config
-+// -------- func png.decoder.decode_iccp
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_nie__decoder__do_decode_frame_config(
--    wuffs_nie__decoder* self,
--    wuffs_base__frame_config* a_dst,
-+wuffs_png__decoder__decode_iccp(
-+    wuffs_png__decoder* self,
-     wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
-+  uint8_t v_c8 = 0;
-+
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -51351,62 +64529,63 @@ wuffs_nie__decoder__do_decode_frame_config(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_iccp;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if (self->private_impl.f_call_sequence == 32u) {
--    } else if (self->private_impl.f_call_sequence < 32u) {
--      if (a_src) {
--        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+    while (true) {
-+      if (self->private_impl.f_chunk_length <= 0u) {
-+        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+        goto exit;
-       }
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      status = wuffs_nie__decoder__do_decode_image_config(self, NULL, a_src);
--      if (a_src) {
--        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      self->private_impl.f_chunk_length -= 1u;
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_0 = *iop_a_src++;
-+        v_c8 = t_0;
-       }
--      if (status.repr) {
--        goto suspend;
-+      if (v_c8 == 0u) {
-+        break;
-       }
--    } else if (self->private_impl.f_call_sequence == 40u) {
--      if (16u != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
--        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
--        goto exit;
-+    }
-+    if (self->private_impl.f_chunk_length <= 0u) {
-+      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+      goto exit;
-+    }
-+    self->private_impl.f_chunk_length -= 1u;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-       }
--    } else if (self->private_impl.f_call_sequence == 64u) {
--      self->private_impl.f_call_sequence = 96u;
--      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--      goto ok;
--    } else {
--      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--      goto ok;
-+      uint8_t t_1 = *iop_a_src++;
-+      v_c8 = t_1;
-     }
--    if (a_dst != NULL) {
--      wuffs_base__frame_config__set(
--          a_dst,
--          wuffs_base__utility__make_rect_ie_u32(
--          0u,
--          0u,
--          self->private_impl.f_width,
--          self->private_impl.f_height),
--          ((wuffs_base__flicks)(0u)),
--          0u,
--          16u,
--          0u,
--          false,
--          false,
--          0u);
-+    if (v_c8 != 0u) {
-+      status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method);
-+      goto exit;
-     }
--    self->private_impl.f_call_sequence = 64u;
-+    self->private_impl.f_metadata_is_zlib_compressed = true;
-+    self->private_impl.f_metadata_flavor = 4u;
-+    self->private_impl.f_metadata_fourcc = 1229144912u;
-+    self->private_impl.f_metadata_x = 0u;
-+    self->private_impl.f_metadata_y = 0u;
-+    self->private_impl.f_metadata_z = 0u;
- 
-+    goto ok;
-     ok:
--    self->private_impl.p_do_decode_frame_config[0] = 0;
-+    self->private_impl.p_decode_iccp = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.p_decode_iccp = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
-   goto exit;
-   exit:
-@@ -51417,182 +64596,119 @@ wuffs_nie__decoder__do_decode_frame_config(
-   return status;
- }
- 
--// -------- func nie.decoder.decode_frame
-+// -------- func png.decoder.decode_plte
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_nie__decoder__decode_frame(
--    wuffs_nie__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--  if (!a_dst || !a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 3)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
--  }
--  self->private_impl.active_coroutine = 0;
-+static wuffs_base__status
-+wuffs_png__decoder__decode_plte(
-+    wuffs_png__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
--
--  uint32_t coro_susp_point = self->private_impl.p_decode_frame[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    while (true) {
--      {
--        wuffs_base__status t_0 = wuffs_nie__decoder__do_decode_frame(self,
--            a_dst,
--            a_src,
--            a_blend,
--            a_workbuf,
--            a_opts);
--        v_status = t_0;
--      }
--      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_nie__error__truncated_input);
--        goto exit;
--      }
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
--    }
-+  uint32_t v_num_entries = 0;
-+  uint32_t v_i = 0;
-+  uint32_t v_argb = 0;
- 
--    ok:
--    self->private_impl.p_decode_frame[0] = 0;
--    goto exit;
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
--
--  goto exit;
--  exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  uint32_t coro_susp_point = self->private_impl.p_decode_plte;
-+  if (coro_susp_point) {
-+    v_num_entries = self->private_data.s_decode_plte.v_num_entries;
-+    v_i = self->private_data.s_decode_plte.v_i;
-   }
--  return status;
--}
--
--// -------- func nie.decoder.do_decode_frame
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_nie__decoder__do_decode_frame(
--    wuffs_nie__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
--
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0];
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if (self->private_impl.f_call_sequence == 64u) {
--    } else if (self->private_impl.f_call_sequence < 64u) {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      status = wuffs_nie__decoder__do_decode_frame_config(self, NULL, a_src);
--      if (status.repr) {
--        goto suspend;
--      }
--    } else {
--      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--      goto ok;
--    }
--    self->private_impl.f_dst_x = 0u;
--    self->private_impl.f_dst_y = 0u;
--    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
--        wuffs_base__pixel_buffer__pixel_format(a_dst),
--        wuffs_base__pixel_buffer__palette(a_dst),
--        wuffs_base__utility__make_pixel_format(self->private_impl.f_pixfmt),
--        wuffs_base__utility__empty_slice_u8(),
--        a_blend);
--    if ( ! wuffs_base__status__is_ok(&v_status)) {
--      status = v_status;
--      if (wuffs_base__status__is_error(&status)) {
--        goto exit;
--      } else if (wuffs_base__status__is_suspension(&status)) {
--        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
--        goto exit;
--      }
--      goto ok;
-+    if ((self->private_impl.f_chunk_length > 768u) || ((self->private_impl.f_chunk_length % 3u) != 0u)) {
-+      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+      goto exit;
-     }
--    while (true) {
--      v_status = wuffs_nie__decoder__swizzle(self, a_dst, a_src);
--      if (wuffs_base__status__is_ok(&v_status)) {
--        break;
--      } else if (v_status.repr != wuffs_nie__note__internal_note_short_read) {
--        status = v_status;
--        if (wuffs_base__status__is_error(&status)) {
--          goto exit;
--        } else if (wuffs_base__status__is_suspension(&status)) {
--          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
--          goto exit;
-+    v_num_entries = (((uint32_t)(self->private_impl.f_chunk_length)) / 3u);
-+    self->private_impl.f_chunk_length = 0u;
-+    while (v_i < v_num_entries) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        uint32_t t_0;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
-+          t_0 = ((uint32_t)(wuffs_base__peek_u24be__no_bounds_check(iop_a_src)));
-+          iop_a_src += 3;
-+        } else {
-+          self->private_data.s_decode_plte.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_decode_plte.scratch;
-+            uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
-+            *scratch >>= 8;
-+            *scratch <<= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
-+            if (num_bits_0 == 16) {
-+              t_0 = ((uint32_t)(*scratch >> 40));
-+              break;
-+            }
-+            num_bits_0 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_0));
-+          }
-         }
--        goto ok;
-+        v_argb = t_0;
-       }
--      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
-+      v_argb |= 4278190080u;
-+      self->private_data.f_src_palette[((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u)));
-+      self->private_data.f_src_palette[((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u)));
-+      self->private_data.f_src_palette[((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u)));
-+      self->private_data.f_src_palette[((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u)));
-+      v_i += 1u;
-+    }
-+    while (v_i < 256u) {
-+      self->private_data.f_src_palette[((4u * v_i) + 0u)] = 0u;
-+      self->private_data.f_src_palette[((4u * v_i) + 1u)] = 0u;
-+      self->private_data.f_src_palette[((4u * v_i) + 2u)] = 0u;
-+      self->private_data.f_src_palette[((4u * v_i) + 3u)] = 255u;
-+      v_i += 1u;
-     }
--    self->private_impl.f_call_sequence = 96u;
- 
-+    goto ok;
-     ok:
--    self->private_impl.p_do_decode_frame[0] = 0;
-+    self->private_impl.p_decode_plte = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.p_decode_plte = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_plte.v_num_entries = v_num_entries;
-+  self->private_data.s_decode_plte.v_i = v_i;
- 
-   goto exit;
-   exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-   return status;
- }
- 
--// -------- func nie.decoder.swizzle
-+// -------- func png.decoder.decode_srgb
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_nie__decoder__swizzle(
--    wuffs_nie__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
-+wuffs_png__decoder__decode_srgb(
-+    wuffs_png__decoder* self,
-     wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  wuffs_base__pixel_format v_dst_pixfmt = {0};
--  uint32_t v_dst_bits_per_pixel = 0;
--  uint32_t v_dst_bytes_per_pixel = 0;
--  uint64_t v_dst_bytes_per_row = 0;
--  uint32_t v_src_bytes_per_pixel = 0;
--  wuffs_base__table_u8 v_tab = {0};
--  wuffs_base__slice_u8 v_dst = {0};
--  uint64_t v_i = 0;
--  uint64_t v_j = 0;
--  uint64_t v_n = 0;
--
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -51604,66 +64720,39 @@ wuffs_nie__decoder__swizzle(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
--  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
--  if ((v_dst_bits_per_pixel & 7u) != 0u) {
--    status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
--    goto exit;
--  }
--  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
--  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
--  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
--  while (true) {
--    if (self->private_impl.f_dst_x == self->private_impl.f_width) {
--      self->private_impl.f_dst_x = 0u;
--      self->private_impl.f_dst_y += 1u;
--      if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
--        break;
--      }
--    }
--    v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
--    if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
--      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
--    }
--    v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
--    if (v_i >= ((uint64_t)(v_dst.len))) {
--      v_src_bytes_per_pixel = 4u;
--      if (self->private_impl.f_pixfmt == 2164308923u) {
--        v_src_bytes_per_pixel = 8u;
--      }
--      v_n = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(v_src_bytes_per_pixel)));
--      v_n = wuffs_base__u64__min(v_n, ((uint64_t)(((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x)))));
--      v_j = v_n;
--      while (v_j >= 8u) {
--        if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 8u)))) {
--          iop_a_src += (v_src_bytes_per_pixel * 8u);
--        }
--        v_j -= 8u;
--      }
--      while (v_j > 0u) {
--        if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 1u)))) {
--          iop_a_src += (v_src_bytes_per_pixel * 1u);
--        }
--        v_j -= 1u;
--      }
--    } else {
--      v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
--          &self->private_impl.f_swizzler,
--          wuffs_base__slice_u8__subslice_i(v_dst, v_i),
--          wuffs_base__pixel_buffer__palette(a_dst),
--          &iop_a_src,
--          io2_a_src);
-+  uint32_t coro_susp_point = self->private_impl.p_decode_srgb;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_chunk_length != 1u) {
-+      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+      goto exit;
-     }
--    if (v_n == 0u) {
--      status = wuffs_base__make_status(wuffs_nie__note__internal_note_short_read);
--      goto ok;
-+    self->private_impl.f_chunk_length = 0u;
-+    self->private_impl.f_metadata_flavor = 5u;
-+    self->private_impl.f_metadata_fourcc = 1397901122u;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint64_t t_0 = *iop_a_src++;
-+      self->private_impl.f_metadata_x = t_0;
-     }
--    wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(v_n)));
-+    self->private_impl.f_metadata_y = 0u;
-+    self->private_impl.f_metadata_z = 0u;
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_decode_srgb = 0;
-+    goto exit;
-   }
--  status = wuffs_base__make_status(NULL);
--  goto ok;
- 
--  ok:
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_srgb = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-   goto exit;
-   exit:
-   if (a_src && a_src->data.ptr) {
-@@ -51673,131 +64762,199 @@ wuffs_nie__decoder__swizzle(
-   return status;
- }
- 
--// -------- func nie.decoder.frame_dirty_rect
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
--wuffs_nie__decoder__frame_dirty_rect(
--    const wuffs_nie__decoder* self) {
--  if (!self) {
--    return wuffs_base__utility__empty_rect_ie_u32();
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_rect_ie_u32();
--  }
--
--  return wuffs_base__utility__make_rect_ie_u32(
--      0u,
--      0u,
--      self->private_impl.f_width,
--      self->private_impl.f_height);
--}
--
--// -------- func nie.decoder.num_animation_loops
-+// -------- func png.decoder.decode_trns
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_nie__decoder__num_animation_loops(
--    const wuffs_nie__decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
--
--  return 0u;
--}
-+static wuffs_base__status
-+wuffs_png__decoder__decode_trns(
-+    wuffs_png__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--// -------- func nie.decoder.num_decoded_frame_configs
-+  uint32_t v_i = 0;
-+  uint32_t v_n = 0;
-+  uint64_t v_u = 0;
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_nie__decoder__num_decoded_frame_configs(
--    const wuffs_nie__decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  if (self->private_impl.f_call_sequence > 32u) {
--    return 1u;
-+  uint32_t coro_susp_point = self->private_impl.p_decode_trns;
-+  if (coro_susp_point) {
-+    v_i = self->private_data.s_decode_trns.v_i;
-+    v_n = self->private_data.s_decode_trns.v_n;
-   }
--  return 0u;
--}
--
--// -------- func nie.decoder.num_decoded_frames
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_nie__decoder__num_decoded_frames(
--    const wuffs_nie__decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
-+    if (self->private_impl.f_color_type == 0u) {
-+      self->private_impl.choosy_filter_and_swizzle = (
-+          &wuffs_png__decoder__filter_and_swizzle_tricky);
-+      if (self->private_impl.f_depth <= 8u) {
-+        self->private_impl.f_dst_pixfmt = 2164295816u;
-+        self->private_impl.f_src_pixfmt = 2164295816u;
-+      } else {
-+        self->private_impl.f_dst_pixfmt = 2164308923u;
-+        self->private_impl.f_src_pixfmt = 2164308923u;
-+      }
-+      if (self->private_impl.f_chunk_length != 2u) {
-+        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+        goto exit;
-+      }
-+      self->private_impl.f_chunk_length = 0u;
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        uint64_t t_0;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+          t_0 = ((uint64_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
-+          iop_a_src += 2;
-+        } else {
-+          self->private_data.s_decode_trns.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_decode_trns.scratch;
-+            uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
-+            *scratch >>= 8;
-+            *scratch <<= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
-+            if (num_bits_0 == 8) {
-+              t_0 = ((uint64_t)(*scratch >> 48));
-+              break;
-+            }
-+            num_bits_0 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_0));
-+          }
-+        }
-+        v_u = t_0;
-+      }
-+      if (self->private_impl.f_depth <= 1u) {
-+        self->private_impl.f_remap_transparency = (((v_u & 1u) * 16777215u) | 4278190080u);
-+      } else if (self->private_impl.f_depth <= 2u) {
-+        self->private_impl.f_remap_transparency = (((v_u & 3u) * 5592405u) | 4278190080u);
-+      } else if (self->private_impl.f_depth <= 4u) {
-+        self->private_impl.f_remap_transparency = (((v_u & 15u) * 1118481u) | 4278190080u);
-+      } else if (self->private_impl.f_depth <= 8u) {
-+        self->private_impl.f_remap_transparency = (((v_u & 255u) * 65793u) | 4278190080u);
-+      } else {
-+        self->private_impl.f_remap_transparency = ((v_u * 4295032833u) | 18446462598732840960u);
-+      }
-+    } else if (self->private_impl.f_color_type == 2u) {
-+      self->private_impl.choosy_filter_and_swizzle = (
-+          &wuffs_png__decoder__filter_and_swizzle_tricky);
-+      if (self->private_impl.f_depth <= 8u) {
-+        self->private_impl.f_dst_pixfmt = 2164295816u;
-+        self->private_impl.f_src_pixfmt = 2164295816u;
-+      } else {
-+        self->private_impl.f_dst_pixfmt = 2164308923u;
-+        self->private_impl.f_src_pixfmt = 2164308923u;
-+      }
-+      if (self->private_impl.f_chunk_length != 6u) {
-+        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+        goto exit;
-+      }
-+      self->private_impl.f_chunk_length = 0u;
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+        uint64_t t_1;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 6)) {
-+          t_1 = ((uint64_t)(wuffs_base__peek_u48be__no_bounds_check(iop_a_src)));
-+          iop_a_src += 6;
-+        } else {
-+          self->private_data.s_decode_trns.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_decode_trns.scratch;
-+            uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
-+            *scratch >>= 8;
-+            *scratch <<= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
-+            if (num_bits_1 == 40) {
-+              t_1 = ((uint64_t)(*scratch >> 16));
-+              break;
-+            }
-+            num_bits_1 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_1));
-+          }
-+        }
-+        v_u = t_1;
-+      }
-+      if (self->private_impl.f_depth <= 8u) {
-+        self->private_impl.f_remap_transparency = ((255u & (v_u >> 0u)) |
-+            (65280u & (v_u >> 8u)) |
-+            (16711680u & (v_u >> 16u)) |
-+            4278190080u);
-+      } else {
-+        self->private_impl.f_remap_transparency = (v_u | 18446462598732840960u);
-+      }
-+    } else if (self->private_impl.f_color_type == 3u) {
-+      self->private_impl.f_dst_pixfmt = 2164523016u;
-+      self->private_impl.f_src_pixfmt = 2164523016u;
-+      if (self->private_impl.f_chunk_length > 256u) {
-+        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+        goto exit;
-+      }
-+      v_n = ((uint32_t)(self->private_impl.f_chunk_length));
-+      self->private_impl.f_chunk_length = 0u;
-+      while (v_i < v_n) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_2 = *iop_a_src++;
-+          self->private_data.f_src_palette[((4u * v_i) + 3u)] = t_2;
-+        }
-+        v_i += 1u;
-+      }
-+    } else {
-+      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+      goto exit;
-+    }
- 
--  if (self->private_impl.f_call_sequence > 64u) {
--    return 1u;
-+    goto ok;
-+    ok:
-+    self->private_impl.p_decode_trns = 0;
-+    goto exit;
-   }
--  return 0u;
--}
--
--// -------- func nie.decoder.restart_frame
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_nie__decoder__restart_frame(
--    wuffs_nie__decoder* self,
--    uint64_t a_index,
--    uint64_t a_io_position) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_trns = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_trns.v_i = v_i;
-+  self->private_data.s_decode_trns.v_n = v_n;
- 
--  if (self->private_impl.f_call_sequence < 32u) {
--    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
--  }
--  if ((a_index != 0u) || (a_io_position != 16u)) {
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
--  self->private_impl.f_call_sequence = 40u;
--  return wuffs_base__make_status(NULL);
--}
- 
--// -------- func nie.decoder.set_report_metadata
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_nie__decoder__set_report_metadata(
--    wuffs_nie__decoder* self,
--    uint32_t a_fourcc,
--    bool a_report) {
--  return wuffs_base__make_empty_struct();
-+  return status;
- }
- 
--// -------- func nie.decoder.tell_me_more
-+// -------- func png.decoder.decode_frame_config
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_nie__decoder__tell_me_more(
--    wuffs_nie__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__more_information* a_minfo,
-+wuffs_png__decoder__decode_frame_config(
-+    wuffs_png__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-     wuffs_base__io_buffer* a_src) {
-   if (!self) {
-     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-@@ -51808,354 +64965,485 @@ wuffs_nie__decoder__tell_me_more(
-         ? wuffs_base__error__disabled_by_previous_error
-         : wuffs_base__error__initialize_not_called);
-   }
--  if (!a_dst || !a_src) {
-+  if (!a_src) {
-     self->private_impl.magic = WUFFS_BASE__DISABLED;
-     return wuffs_base__make_status(wuffs_base__error__bad_argument);
-   }
-   if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 4)) {
-+      (self->private_impl.active_coroutine != 2)) {
-     self->private_impl.magic = WUFFS_BASE__DISABLED;
-     return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-   }
-   self->private_impl.active_coroutine = 0;
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  status = wuffs_base__make_status(wuffs_base__error__no_more_information);
--  goto exit;
--
--  goto ok;
--  ok:
--  goto exit;
--  exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--  }
--  return status;
--}
--
--// -------- func nie.decoder.history_retain_length
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_nie__decoder__history_retain_length(
--    const wuffs_nie__decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
--
--  return 0u;
--}
--
--// -------- func nie.decoder.workbuf_len
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_nie__decoder__workbuf_len(
--    const wuffs_nie__decoder* self) {
--  if (!self) {
--    return wuffs_base__utility__empty_range_ii_u64();
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_range_ii_u64();
--  }
--
--  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
--}
--
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE)
--
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ZLIB)
--
--// ---------------- Status Codes Implementations
--
--const char wuffs_zlib__note__dictionary_required[] = "@zlib: dictionary required";
--const char wuffs_zlib__error__bad_checksum[] = "#zlib: bad checksum";
--const char wuffs_zlib__error__bad_compression_method[] = "#zlib: bad compression method";
--const char wuffs_zlib__error__bad_compression_window_size[] = "#zlib: bad compression window size";
--const char wuffs_zlib__error__bad_parity_check[] = "#zlib: bad parity check";
--const char wuffs_zlib__error__incorrect_dictionary[] = "#zlib: incorrect dictionary";
--const char wuffs_zlib__error__truncated_input[] = "#zlib: truncated input";
--
--// ---------------- Private Consts
--
--#define WUFFS_ZLIB__QUIRKS_BASE 2113790976
--
--#define WUFFS_ZLIB__QUIRKS_COUNT 1
--
--// ---------------- Private Initializer Prototypes
--
--// ---------------- Private Function Prototypes
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_zlib__decoder__do_transform_io(
--    wuffs_zlib__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__slice_u8 a_workbuf);
--
--// ---------------- VTables
--
--const wuffs_base__io_transformer__func_ptrs
--wuffs_zlib__decoder__func_ptrs_for__wuffs_base__io_transformer = {
--  (uint64_t(*)(const void*,
--      uint32_t))(&wuffs_zlib__decoder__get_quirk),
--  (uint64_t(*)(const void*))(&wuffs_zlib__decoder__history_retain_length),
--  (wuffs_base__status(*)(void*,
--      uint32_t,
--      uint64_t))(&wuffs_zlib__decoder__set_quirk),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__io_buffer*,
--      wuffs_base__io_buffer*,
--      wuffs_base__slice_u8))(&wuffs_zlib__decoder__transform_io),
--  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_zlib__decoder__workbuf_len),
--};
--
--// ---------------- Initializer Implementations
--
--wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_zlib__decoder__initialize(
--    wuffs_zlib__decoder* self,
--    size_t sizeof_star_self,
--    uint64_t wuffs_version,
--    uint32_t options){
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (sizeof(*self) != sizeof_star_self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
--  }
--  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
--      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
--    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
--  }
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
--    // The whole point of this if-check is to detect an uninitialized *self.
--    // We disable the warning on GCC. Clang-5.0 does not have this warning.
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
--#endif
--    if (self->private_impl.magic != 0) {
--      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
--    }
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--  } else {
--    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
--      memset(self, 0, sizeof(*self));
--      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
--    } else {
--      memset(&(self->private_impl), 0, sizeof(self->private_impl));
--    }
--  }
-+  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--  {
--    wuffs_base__status z = wuffs_adler32__hasher__initialize(
--        &self->private_data.f_checksum, sizeof(self->private_data.f_checksum), WUFFS_VERSION, options);
--    if (z.repr) {
--      return z;
--    }
--  }
--  {
--    wuffs_base__status z = wuffs_adler32__hasher__initialize(
--        &self->private_data.f_dict_id_hasher, sizeof(self->private_data.f_dict_id_hasher), WUFFS_VERSION, options);
--    if (z.repr) {
--      return z;
--    }
--  }
--  {
--    wuffs_base__status z = wuffs_deflate__decoder__initialize(
--        &self->private_data.f_flate, sizeof(self->private_data.f_flate), WUFFS_VERSION, options);
--    if (z.repr) {
--      return z;
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_png__decoder__do_decode_frame_config(self, a_dst, a_src);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_png__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-     }
--  }
--  self->private_impl.magic = WUFFS_BASE__MAGIC;
--  self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
--      wuffs_base__io_transformer__vtable_name;
--  self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
--      (const void*)(&wuffs_zlib__decoder__func_ptrs_for__wuffs_base__io_transformer);
--  return wuffs_base__make_status(NULL);
--}
--
--wuffs_zlib__decoder*
--wuffs_zlib__decoder__alloc(void) {
--  wuffs_zlib__decoder* x =
--      (wuffs_zlib__decoder*)(calloc(sizeof(wuffs_zlib__decoder), 1));
--  if (!x) {
--    return NULL;
--  }
--  if (wuffs_zlib__decoder__initialize(
--      x, sizeof(wuffs_zlib__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
--    free(x);
--    return NULL;
--  }
--  return x;
--}
--
--size_t
--sizeof__wuffs_zlib__decoder(void) {
--  return sizeof(wuffs_zlib__decoder);
--}
--
--// ---------------- Function Implementations
--
--// -------- func zlib.decoder.dictionary_id
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_zlib__decoder__dictionary_id(
--    const wuffs_zlib__decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
--
--  return self->private_impl.f_dict_id_want;
--}
- 
--// -------- func zlib.decoder.add_dictionary
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_zlib__decoder__add_dictionary(
--    wuffs_zlib__decoder* self,
--    wuffs_base__slice_u8 a_dict) {
--  if (!self) {
--    return wuffs_base__make_empty_struct();
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_empty_struct();
-+    ok:
-+    self->private_impl.p_decode_frame_config = 0;
-+    goto exit;
-   }
- 
--  if (self->private_impl.f_header_complete) {
--    self->private_impl.f_bad_call_sequence = true;
--  } else {
--    self->private_impl.f_dict_id_got = wuffs_adler32__hasher__update_u32(&self->private_data.f_dict_id_hasher, a_dict);
--    wuffs_deflate__decoder__add_history(&self->private_data.f_flate, a_dict);
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-   }
--  self->private_impl.f_got_dictionary = true;
--  return wuffs_base__make_empty_struct();
-+  return status;
- }
- 
--// -------- func zlib.decoder.get_quirk
-+// -------- func png.decoder.do_decode_frame_config
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_zlib__decoder__get_quirk(
--    const wuffs_zlib__decoder* self,
--    uint32_t a_key) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
-+static wuffs_base__status
-+wuffs_png__decoder__do_decode_frame_config(
-+    wuffs_png__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint32_t v_checksum_have = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t v_key = 0;
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--  if ((a_key == 1u) && self->private_impl.f_ignore_checksum) {
--    return 1u;
--  } else if (a_key >= 2113790976u) {
--    v_key = (a_key - 2113790976u);
--    if (v_key < 1u) {
--      if (self->private_impl.f_quirks[v_key]) {
--        return 1u;
-+    if (((uint8_t)(self->private_impl.f_call_sequence & 16u)) != 0u) {
-+      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+      goto exit;
-+    } else if (self->private_impl.f_call_sequence == 32u) {
-+    } else if (self->private_impl.f_call_sequence < 32u) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      status = wuffs_png__decoder__do_decode_image_config(self, NULL, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+    } else if (self->private_impl.f_call_sequence == 40u) {
-+      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
-+        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
-+        goto exit;
-+      }
-+    } else if (self->private_impl.f_call_sequence == 64u) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+      status = wuffs_png__decoder__skip_frame(self, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+    } else {
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-+    }
-+    if (self->private_impl.f_metadata_fourcc != 0u) {
-+      self->private_impl.f_call_sequence = 48u;
-+      status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
-+      goto ok;
-+    }
-+    if (self->private_impl.f_num_decoded_frame_configs_value == 0u) {
-+      self->private_impl.f_frame_rect_x0 = self->private_impl.f_first_rect_x0;
-+      self->private_impl.f_frame_rect_y0 = self->private_impl.f_first_rect_y0;
-+      self->private_impl.f_frame_rect_x1 = self->private_impl.f_first_rect_x1;
-+      self->private_impl.f_frame_rect_y1 = self->private_impl.f_first_rect_y1;
-+      self->private_impl.f_frame_config_io_position = self->private_impl.f_first_config_io_position;
-+      self->private_impl.f_frame_duration = self->private_impl.f_first_duration;
-+      self->private_impl.f_frame_disposal = self->private_impl.f_first_disposal;
-+      self->private_impl.f_frame_overwrite_instead_of_blend = self->private_impl.f_first_overwrite_instead_of_blend;
-+    } else {
-+      while (true) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+          uint32_t t_0;
-+          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+            t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+            iop_a_src += 4;
-+          } else {
-+            self->private_data.s_do_decode_frame_config.scratch = 0;
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+            while (true) {
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint64_t* scratch = &self->private_data.s_do_decode_frame_config.scratch;
-+              uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
-+              *scratch >>= 8;
-+              *scratch <<= 8;
-+              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
-+              if (num_bits_0 == 24) {
-+                t_0 = ((uint32_t)(*scratch >> 32));
-+                break;
-+              }
-+              num_bits_0 += 8u;
-+              *scratch |= ((uint64_t)(num_bits_0));
-+            }
-+          }
-+          self->private_impl.f_chunk_length = t_0;
-+        }
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+          uint32_t t_1;
-+          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+            t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+            iop_a_src += 4;
-+          } else {
-+            self->private_data.s_do_decode_frame_config.scratch = 0;
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+            while (true) {
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint64_t* scratch = &self->private_data.s_do_decode_frame_config.scratch;
-+              uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
-+              *scratch <<= 8;
-+              *scratch >>= 8;
-+              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
-+              if (num_bits_1 == 24) {
-+                t_1 = ((uint32_t)(*scratch));
-+                break;
-+              }
-+              num_bits_1 += 8u;
-+              *scratch |= ((uint64_t)(num_bits_1)) << 56;
-+            }
-+          }
-+          self->private_impl.f_chunk_type = t_1;
-+        }
-+        if (self->private_impl.f_chunk_type == 1145980233u) {
-+          if (self->private_impl.f_chunk_length != 0u) {
-+            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+            goto exit;
-+          }
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+            uint32_t t_2;
-+            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+              t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+              iop_a_src += 4;
-+            } else {
-+              self->private_data.s_do_decode_frame_config.scratch = 0;
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+              while (true) {
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint64_t* scratch = &self->private_data.s_do_decode_frame_config.scratch;
-+                uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
-+                *scratch <<= 8;
-+                *scratch >>= 8;
-+                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
-+                if (num_bits_2 == 24) {
-+                  t_2 = ((uint32_t)(*scratch));
-+                  break;
-+                }
-+                num_bits_2 += 8u;
-+                *scratch |= ((uint64_t)(num_bits_2)) << 56;
-+              }
-+            }
-+            v_checksum_have = t_2;
-+          }
-+          if ( ! self->private_impl.f_ignore_checksum && (v_checksum_have != 2187346606u)) {
-+            status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
-+            goto exit;
-+          }
-+          self->private_impl.f_call_sequence = 96u;
-+          status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+          goto ok;
-+        } else if (self->private_impl.f_chunk_type == 1413571686u) {
-+          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+          goto exit;
-+        } else if (self->private_impl.f_chunk_type == 1280598886u) {
-+          self->private_impl.f_frame_config_io_position = ((uint64_t)(wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))) - 8u));
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+          status = wuffs_png__decoder__decode_fctl(self, a_src);
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+          if (status.repr) {
-+            goto suspend;
-+          }
-+          self->private_data.s_do_decode_frame_config.scratch = 4u;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
-+          if (self->private_data.s_do_decode_frame_config.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+            self->private_data.s_do_decode_frame_config.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+            iop_a_src = io2_a_src;
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          iop_a_src += self->private_data.s_do_decode_frame_config.scratch;
-+          break;
-+        }
-+        if (a_src) {
-+          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+        }
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
-+        status = wuffs_png__decoder__decode_other_chunk(self, a_src, true);
-+        if (a_src) {
-+          iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+        }
-+        if (status.repr) {
-+          goto suspend;
-+        }
-+        if (self->private_impl.f_metadata_fourcc != 0u) {
-+          self->private_impl.f_call_sequence = 48u;
-+          status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
-+          goto ok;
-+        }
-+        self->private_data.s_do_decode_frame_config.scratch = 4u;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
-+        if (self->private_data.s_do_decode_frame_config.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+          self->private_data.s_do_decode_frame_config.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+          iop_a_src = io2_a_src;
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        iop_a_src += self->private_data.s_do_decode_frame_config.scratch;
-+        self->private_impl.f_chunk_length = 0u;
-       }
-     }
-+    if (a_dst != NULL) {
-+      wuffs_base__frame_config__set(
-+          a_dst,
-+          wuffs_base__utility__make_rect_ie_u32(
-+          self->private_impl.f_frame_rect_x0,
-+          self->private_impl.f_frame_rect_y0,
-+          self->private_impl.f_frame_rect_x1,
-+          self->private_impl.f_frame_rect_y1),
-+          ((wuffs_base__flicks)(self->private_impl.f_frame_duration)),
-+          ((uint64_t)(self->private_impl.f_num_decoded_frame_configs_value)),
-+          self->private_impl.f_frame_config_io_position,
-+          self->private_impl.f_frame_disposal,
-+          ((self->private_impl.f_color_type <= 3u) &&  ! self->private_impl.f_seen_trns),
-+          self->private_impl.f_frame_overwrite_instead_of_blend,
-+          0u);
-+    }
-+    wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_num_decoded_frame_configs_value, 1u);
-+    self->private_impl.f_call_sequence = 64u;
-+
-+    ok:
-+    self->private_impl.p_do_decode_frame_config = 0;
-+    goto exit;
-   }
--  return 0u;
--}
- 
--// -------- func zlib.decoder.set_quirk
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_zlib__decoder__set_quirk(
--    wuffs_zlib__decoder* self,
--    uint32_t a_key,
--    uint64_t a_value) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
- 
--  if (self->private_impl.f_header_complete) {
--    self->private_impl.f_bad_call_sequence = true;
--    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
--  } else if (a_key == 1u) {
--    self->private_impl.f_ignore_checksum = (a_value > 0u);
--    return wuffs_base__make_status(NULL);
--  } else if (a_key >= 2113790976u) {
--    a_key -= 2113790976u;
--    if (a_key < 1u) {
--      self->private_impl.f_quirks[a_key] = (a_value > 0u);
--      return wuffs_base__make_status(NULL);
--    }
--  }
--  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+  return status;
- }
- 
--// -------- func zlib.decoder.history_retain_length
-+// -------- func png.decoder.skip_frame
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_zlib__decoder__history_retain_length(
--    const wuffs_zlib__decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
-+static wuffs_base__status
-+wuffs_png__decoder__skip_frame(
-+    wuffs_png__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint32_t v_seq_num = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  return 0u;
--}
-+  uint32_t coro_susp_point = self->private_impl.p_skip_frame;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--// -------- func zlib.decoder.workbuf_len
-+    self->private_impl.f_chunk_type_array[0u] = 0u;
-+    self->private_impl.f_chunk_type_array[1u] = 0u;
-+    self->private_impl.f_chunk_type_array[2u] = 0u;
-+    self->private_impl.f_chunk_type_array[3u] = 0u;
-+    while (true) {
-+      if (((uint64_t)(io2_a_src - iop_a_src)) < 8u) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+        continue;
-+      }
-+      self->private_impl.f_chunk_length = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+      self->private_impl.f_chunk_type = ((uint32_t)((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) >> 32u)));
-+      if (self->private_impl.f_chunk_type == 1413563465u) {
-+        if (self->private_impl.f_chunk_type_array[0u] == 102u) {
-+          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+          goto exit;
-+        }
-+        self->private_impl.f_chunk_type_array[0u] = 73u;
-+        self->private_impl.f_chunk_type_array[1u] = 68u;
-+        self->private_impl.f_chunk_type_array[2u] = 65u;
-+        self->private_impl.f_chunk_type_array[3u] = 84u;
-+      } else if (self->private_impl.f_chunk_type == 1413571686u) {
-+        if (self->private_impl.f_chunk_type_array[0u] == 73u) {
-+          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+          goto exit;
-+        }
-+        self->private_impl.f_chunk_type_array[0u] = 102u;
-+        self->private_impl.f_chunk_type_array[1u] = 100u;
-+        self->private_impl.f_chunk_type_array[2u] = 65u;
-+        self->private_impl.f_chunk_type_array[3u] = 84u;
-+        if (self->private_impl.f_chunk_length < 4u) {
-+          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+          goto exit;
-+        }
-+        self->private_impl.f_chunk_length -= 4u;
-+        iop_a_src += 8u;
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+          uint32_t t_0;
-+          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+            t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+            iop_a_src += 4;
-+          } else {
-+            self->private_data.s_skip_frame.scratch = 0;
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+            while (true) {
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint64_t* scratch = &self->private_data.s_skip_frame.scratch;
-+              uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
-+              *scratch >>= 8;
-+              *scratch <<= 8;
-+              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
-+              if (num_bits_0 == 24) {
-+                t_0 = ((uint32_t)(*scratch >> 32));
-+                break;
-+              }
-+              num_bits_0 += 8u;
-+              *scratch |= ((uint64_t)(num_bits_0));
-+            }
-+          }
-+          v_seq_num = t_0;
-+        }
-+        if (v_seq_num != self->private_impl.f_next_animation_seq_num) {
-+          status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number);
-+          goto exit;
-+        } else if (self->private_impl.f_next_animation_seq_num >= 4294967295u) {
-+          status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
-+          goto exit;
-+        }
-+        self->private_impl.f_next_animation_seq_num += 1u;
-+        self->private_data.s_skip_frame.scratch = (((uint64_t)(self->private_impl.f_chunk_length)) + 4u);
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+        if (self->private_data.s_skip_frame.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+          self->private_data.s_skip_frame.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+          iop_a_src = io2_a_src;
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        iop_a_src += self->private_data.s_skip_frame.scratch;
-+        self->private_impl.f_chunk_length = 0u;
-+        continue;
-+      } else if (self->private_impl.f_chunk_type_array[0u] != 0u) {
-+        break;
-+      } else if (self->private_impl.f_chunk_type == 1280598886u) {
-+        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+        goto exit;
-+      }
-+      self->private_data.s_skip_frame.scratch = (((uint64_t)(self->private_impl.f_chunk_length)) + 12u);
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+      if (self->private_data.s_skip_frame.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+        self->private_data.s_skip_frame.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+        iop_a_src = io2_a_src;
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      iop_a_src += self->private_data.s_skip_frame.scratch;
-+      self->private_impl.f_chunk_length = 0u;
-+    }
-+    wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
-+    self->private_impl.f_call_sequence = 32u;
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_zlib__decoder__workbuf_len(
--    const wuffs_zlib__decoder* self) {
--  if (!self) {
--    return wuffs_base__utility__empty_range_ii_u64();
-+    ok:
-+    self->private_impl.p_skip_frame = 0;
-+    goto exit;
-   }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_range_ii_u64();
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_skip_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
- 
--  return wuffs_base__utility__make_range_ii_u64(1u, 1u);
-+  return status;
- }
- 
--// -------- func zlib.decoder.transform_io
-+// -------- func png.decoder.decode_frame
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_zlib__decoder__transform_io(
--    wuffs_zlib__decoder* self,
--    wuffs_base__io_buffer* a_dst,
-+wuffs_png__decoder__decode_frame(
-+    wuffs_png__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-     wuffs_base__io_buffer* a_src,
--    wuffs_base__slice_u8 a_workbuf) {
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts) {
-   if (!self) {
-     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
-@@ -52170,7 +65458,7 @@ wuffs_zlib__decoder__transform_io(
-     return wuffs_base__make_status(wuffs_base__error__bad_argument);
-   }
-   if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 1)) {
-+      (self->private_impl.active_coroutine != 3)) {
-     self->private_impl.magic = WUFFS_BASE__DISABLED;
-     return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-   }
-@@ -52179,71 +65467,312 @@ wuffs_zlib__decoder__transform_io(
- 
-   wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--  uint32_t coro_susp_point = self->private_impl.p_transform_io[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_frame;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_png__decoder__do_decode_frame(self,
-+            a_dst,
-+            a_src,
-+            a_blend,
-+            a_workbuf,
-+            a_opts);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_png__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+
-+    ok:
-+    self->private_impl.p_decode_frame = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func png.decoder.do_decode_frame
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_png__decoder__do_decode_frame(
-+    wuffs_png__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint32_t v_seq_num = 0;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+  uint32_t v_pass_width = 0;
-+  uint32_t v_pass_height = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
-+    if (((uint8_t)(self->private_impl.f_call_sequence & 16u)) != 0u) {
-+      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+      goto exit;
-+    } else if (self->private_impl.f_call_sequence >= 96u) {
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-+    } else if (self->private_impl.f_call_sequence != 64u) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      status = wuffs_png__decoder__do_decode_frame_config(self, NULL, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+    }
-     while (true) {
--      {
--        wuffs_base__status t_0 = wuffs_zlib__decoder__do_transform_io(self, a_dst, a_src, a_workbuf);
--        v_status = t_0;
-+      if (((uint64_t)(io2_a_src - iop_a_src)) < 8u) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
-+        continue;
-       }
--      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_zlib__error__truncated_input);
-+      self->private_impl.f_chunk_length = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+      self->private_impl.f_chunk_type = ((uint32_t)((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) >> 32u)));
-+      if (self->private_impl.f_chunk_type == 1413563465u) {
-+        self->private_impl.f_chunk_type_array[0u] = 73u;
-+        self->private_impl.f_chunk_type_array[1u] = 68u;
-+        self->private_impl.f_chunk_type_array[2u] = 65u;
-+        self->private_impl.f_chunk_type_array[3u] = 84u;
-+        iop_a_src += 8u;
-+        if ( ! self->private_impl.f_ignore_checksum) {
-+          wuffs_private_impl__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
-+              sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
-+          wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4));
-+        }
-+        break;
-+      } else if (self->private_impl.f_chunk_type == 1413571686u) {
-+        self->private_impl.f_chunk_type_array[0u] = 102u;
-+        self->private_impl.f_chunk_type_array[1u] = 100u;
-+        self->private_impl.f_chunk_type_array[2u] = 65u;
-+        self->private_impl.f_chunk_type_array[3u] = 84u;
-+        if (self->private_impl.f_chunk_length < 4u) {
-+          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+          goto exit;
-+        }
-+        self->private_impl.f_chunk_length -= 4u;
-+        iop_a_src += 8u;
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+          uint32_t t_0;
-+          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+            t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+            iop_a_src += 4;
-+          } else {
-+            self->private_data.s_do_decode_frame.scratch = 0;
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+            while (true) {
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint64_t* scratch = &self->private_data.s_do_decode_frame.scratch;
-+              uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
-+              *scratch >>= 8;
-+              *scratch <<= 8;
-+              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
-+              if (num_bits_0 == 24) {
-+                t_0 = ((uint32_t)(*scratch >> 32));
-+                break;
-+              }
-+              num_bits_0 += 8u;
-+              *scratch |= ((uint64_t)(num_bits_0));
-+            }
-+          }
-+          v_seq_num = t_0;
-+        }
-+        if (v_seq_num != self->private_impl.f_next_animation_seq_num) {
-+          status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number);
-+          goto exit;
-+        } else if (self->private_impl.f_next_animation_seq_num >= 4294967295u) {
-+          status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
-+          goto exit;
-+        }
-+        self->private_impl.f_next_animation_seq_num += 1u;
-+        break;
-+      } else if (self->private_impl.f_chunk_type == 1280598886u) {
-+        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-         goto exit;
-       }
-+      self->private_data.s_do_decode_frame.scratch = (((uint64_t)(self->private_impl.f_chunk_length)) + 12u);
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+      if (self->private_data.s_do_decode_frame.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+        self->private_data.s_do_decode_frame.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+        iop_a_src = io2_a_src;
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      iop_a_src += self->private_data.s_do_decode_frame.scratch;
-+      self->private_impl.f_chunk_length = 0u;
-+    }
-+    if (self->private_impl.f_zlib_is_dirty) {
-+      wuffs_private_impl__ignore_status(wuffs_zlib__decoder__initialize(&self->private_data.f_zlib,
-+          sizeof (wuffs_zlib__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
-+      if (self->private_impl.f_ignore_checksum) {
-+        wuffs_zlib__decoder__set_quirk(&self->private_data.f_zlib, 1u, 1u);
-+      }
-+    }
-+    self->private_impl.f_zlib_is_dirty = true;
-+    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
-+        wuffs_base__pixel_buffer__pixel_format(a_dst),
-+        wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
-+        wuffs_base__utility__make_pixel_format(self->private_impl.f_src_pixfmt),
-+        wuffs_base__make_slice_u8(self->private_data.f_src_palette, 1024),
-+        a_blend);
-+    if ( ! wuffs_base__status__is_ok(&v_status)) {
-       status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+      if (wuffs_base__status__is_error(&status)) {
-+        goto exit;
-+      } else if (wuffs_base__status__is_suspension(&status)) {
-+        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+        goto exit;
-+      }
-+      goto ok;
-+    }
-+    self->private_impl.f_workbuf_hist_pos_base = 0u;
-+    while (true) {
-+      if (self->private_impl.f_chunk_type_array[0u] == 73u) {
-+        v_pass_width = (16777215u & ((((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][1u])) + self->private_impl.f_width) >> WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0u]));
-+        v_pass_height = (16777215u & ((((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][4u])) + self->private_impl.f_height) >> WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][3u]));
-+      } else {
-+        v_pass_width = (16777215u & ((uint32_t)(self->private_impl.f_frame_rect_x1 - self->private_impl.f_frame_rect_x0)));
-+        v_pass_height = (16777215u & ((uint32_t)(self->private_impl.f_frame_rect_y1 - self->private_impl.f_frame_rect_y0)));
-+      }
-+      if ((v_pass_width > 0u) && (v_pass_height > 0u)) {
-+        self->private_impl.f_pass_bytes_per_row = wuffs_png__decoder__calculate_bytes_per_row(self, v_pass_width);
-+        self->private_impl.f_pass_workbuf_length = (((uint64_t)(v_pass_height)) * (1u + self->private_impl.f_pass_bytes_per_row));
-+        while (true) {
-+          {
-+            if (a_src) {
-+              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+            }
-+            wuffs_base__status t_1 = wuffs_png__decoder__decode_pass(self, a_src, a_workbuf);
-+            v_status = t_1;
-+            if (a_src) {
-+              iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+            }
-+          }
-+          if (wuffs_base__status__is_ok(&v_status)) {
-+            break;
-+          } else if (wuffs_base__status__is_error(&v_status) || ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed))) {
-+            if (self->private_impl.f_workbuf_wi <= ((uint64_t)(a_workbuf.len))) {
-+              wuffs_png__decoder__filter_and_swizzle(self, a_dst, wuffs_base__slice_u8__subslice_j(a_workbuf, self->private_impl.f_workbuf_wi));
-+            }
-+            if (v_status.repr == wuffs_base__suspension__short_read) {
-+              status = wuffs_base__make_status(wuffs_png__error__truncated_input);
-+              goto exit;
-+            }
-+          }
-+          status = v_status;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
-+        }
-+        v_status = wuffs_png__decoder__filter_and_swizzle(self, a_dst, a_workbuf);
-+        if ( ! wuffs_base__status__is_ok(&v_status)) {
-+          status = v_status;
-+          if (wuffs_base__status__is_error(&status)) {
-+            goto exit;
-+          } else if (wuffs_base__status__is_suspension(&status)) {
-+            status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+            goto exit;
-+          }
-+          goto ok;
-+        }
-+        self->private_impl.f_workbuf_hist_pos_base += self->private_impl.f_pass_workbuf_length;
-+      }
-+      if ((self->private_impl.f_interlace_pass == 0u) || (self->private_impl.f_interlace_pass >= 7u)) {
-+        break;
-+      }
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+      self->private_impl.f_interlace_pass += 1u;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-     }
-+    wuffs_private_impl__u32__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
-+    self->private_impl.f_call_sequence = 32u;
- 
-     ok:
--    self->private_impl.p_transform_io[0] = 0;
-+    self->private_impl.p_do_decode_frame = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
-+  self->private_impl.p_do_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
-   goto exit;
-   exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
-+
-   return status;
- }
- 
--// -------- func zlib.decoder.do_transform_io
-+// -------- func png.decoder.decode_pass
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_zlib__decoder__do_transform_io(
--    wuffs_zlib__decoder* self,
--    wuffs_base__io_buffer* a_dst,
-+wuffs_png__decoder__decode_pass(
-+    wuffs_png__decoder* self,
-     wuffs_base__io_buffer* a_src,
-     wuffs_base__slice_u8 a_workbuf) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint16_t v_x = 0;
--  uint32_t v_checksum_got = 0;
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+  wuffs_base__io_buffer u_w = wuffs_base__empty_io_buffer();
-+  wuffs_base__io_buffer* v_w = &u_w;
-+  uint8_t* iop_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io0_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io1_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io2_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint64_t v_w_mark = 0;
-+  uint64_t v_r_mark = 0;
-+  wuffs_base__status v_zlib_status = wuffs_base__make_status(NULL);
-+  uint32_t v_checksum_have = 0;
-   uint32_t v_checksum_want = 0;
--  uint64_t v_mark = 0;
-+  uint32_t v_seq_num = 0;
- 
--  uint8_t* iop_a_dst = NULL;
--  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_dst && a_dst->data.ptr) {
--    io0_a_dst = a_dst->data.ptr;
--    io1_a_dst = io0_a_dst + a_dst->meta.wi;
--    iop_a_dst = io1_a_dst;
--    io2_a_dst = io0_a_dst + a_dst->data.len;
--    if (a_dst->meta.closed) {
--      io2_a_dst = iop_a_dst;
--    }
--  }
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -52255,77 +65784,93 @@ wuffs_zlib__decoder__do_transform_io(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_transform_io[0];
--  if (coro_susp_point) {
--    v_checksum_got = self->private_data.s_do_transform_io[0].v_checksum_got;
--  }
-+  uint32_t coro_susp_point = self->private_impl.p_decode_pass;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if (self->private_impl.f_bad_call_sequence) {
--      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
--      goto exit;
--    } else if (self->private_impl.f_quirks[0u]) {
--    } else if ( ! self->private_impl.f_want_dictionary) {
-+    self->private_impl.f_workbuf_wi = 0u;
-+    while (true) {
-+      if ((self->private_impl.f_workbuf_wi > self->private_impl.f_pass_workbuf_length) || (self->private_impl.f_pass_workbuf_length > ((uint64_t)(a_workbuf.len)))) {
-+        status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
-+        goto exit;
-+      }
-       {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--        uint16_t t_0;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--          t_0 = wuffs_base__peek_u16be__no_bounds_check(iop_a_src);
--          iop_a_src += 2;
--        } else {
--          self->private_data.s_do_transform_io[0].scratch = 0;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
-+        wuffs_base__io_buffer* o_0_v_w = v_w;
-+        uint8_t* o_0_iop_v_w = iop_v_w;
-+        uint8_t* o_0_io0_v_w = io0_v_w;
-+        uint8_t* o_0_io1_v_w = io1_v_w;
-+        uint8_t* o_0_io2_v_w = io2_v_w;
-+        v_w = wuffs_private_impl__io_writer__set(
-+            &u_w,
-+            &iop_v_w,
-+            &io0_v_w,
-+            &io1_v_w,
-+            &io2_v_w,
-+            wuffs_base__slice_u8__subslice_ij(a_workbuf,
-+            self->private_impl.f_workbuf_wi,
-+            self->private_impl.f_pass_workbuf_length),
-+            ((uint64_t)(self->private_impl.f_workbuf_hist_pos_base + self->private_impl.f_workbuf_wi)));
-+        {
-+          const bool o_1_closed_a_src = a_src->meta.closed;
-+          const uint8_t* o_1_io2_a_src = io2_a_src;
-+          wuffs_private_impl__io_reader__limit(&io2_a_src, iop_a_src,
-+              ((uint64_t)(self->private_impl.f_chunk_length)));
-+          if (a_src) {
-+            size_t n = ((size_t)(io2_a_src - a_src->data.ptr));
-+            a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n);
-+            a_src->meta.wi = n;
-+          }
-+          v_w_mark = ((uint64_t)(iop_v_w - io0_v_w));
-+          v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
-+          {
-+            u_w.meta.wi = ((size_t)(iop_v_w - u_w.data.ptr));
-+            if (a_src) {
-+              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-             }
--            uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch;
--            uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
--            *scratch >>= 8;
--            *scratch <<= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
--            if (num_bits_0 == 8) {
--              t_0 = ((uint16_t)(*scratch >> 48));
--              break;
-+            wuffs_base__status t_0 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, v_w, a_src, wuffs_base__utility__empty_slice_u8());
-+            v_zlib_status = t_0;
-+            iop_v_w = u_w.data.ptr + u_w.meta.wi;
-+            if (a_src) {
-+              iop_a_src = a_src->data.ptr + a_src->meta.ri;
-             }
--            num_bits_0 += 8u;
--            *scratch |= ((uint64_t)(num_bits_0));
-+          }
-+          if ( ! self->private_impl.f_ignore_checksum) {
-+            wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_private_impl__io__since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
-+          }
-+          wuffs_private_impl__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)(wuffs_private_impl__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))))));
-+          wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_workbuf_wi, wuffs_private_impl__io__count_since(v_w_mark, ((uint64_t)(iop_v_w - io0_v_w))));
-+          io2_a_src = o_1_io2_a_src;
-+          if (a_src) {
-+            a_src->meta.closed = o_1_closed_a_src;
-+            a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
-           }
-         }
--        v_x = t_0;
--      }
--      if (((v_x >> 8u) & 15u) != 8u) {
--        status = wuffs_base__make_status(wuffs_zlib__error__bad_compression_method);
--        goto exit;
--      }
--      if ((v_x >> 12u) > 7u) {
--        status = wuffs_base__make_status(wuffs_zlib__error__bad_compression_window_size);
--        goto exit;
--      }
--      if ((v_x % 31u) != 0u) {
--        status = wuffs_base__make_status(wuffs_zlib__error__bad_parity_check);
--        goto exit;
-+        v_w = o_0_v_w;
-+        iop_v_w = o_0_iop_v_w;
-+        io0_v_w = o_0_io0_v_w;
-+        io1_v_w = o_0_io1_v_w;
-+        io2_v_w = o_0_io2_v_w;
-       }
--      self->private_impl.f_want_dictionary = ((v_x & 32u) != 0u);
--      if (self->private_impl.f_want_dictionary) {
--        self->private_impl.f_dict_id_got = 1u;
-+      if (wuffs_base__status__is_ok(&v_zlib_status)) {
-+        if (self->private_impl.f_chunk_length > 0u) {
-+          status = wuffs_base__make_status(wuffs_base__error__too_much_data);
-+          goto exit;
-+        }
-         {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-           uint32_t t_1;
-           if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-             t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-             iop_a_src += 4;
-           } else {
--            self->private_data.s_do_transform_io[0].scratch = 0;
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+            self->private_data.s_decode_pass.scratch = 0;
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-             while (true) {
-               if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-                 status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-                 goto suspend;
-               }
--              uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch;
-+              uint64_t* scratch = &self->private_data.s_decode_pass.scratch;
-               uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
-               *scratch >>= 8;
-               *scratch <<= 8;
-@@ -52338,101 +65883,208 @@ wuffs_zlib__decoder__do_transform_io(
-               *scratch |= ((uint64_t)(num_bits_1));
-             }
-           }
--          self->private_impl.f_dict_id_want = t_1;
-+          v_checksum_want = t_1;
-         }
--        status = wuffs_base__make_status(wuffs_zlib__note__dictionary_required);
--        goto ok;
--      } else if (self->private_impl.f_got_dictionary) {
--        status = wuffs_base__make_status(wuffs_zlib__error__incorrect_dictionary);
--        goto exit;
--      }
--    } else if (self->private_impl.f_dict_id_got != self->private_impl.f_dict_id_want) {
--      if (self->private_impl.f_got_dictionary) {
--        status = wuffs_base__make_status(wuffs_zlib__error__incorrect_dictionary);
-+        if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_chunk_type_array[0u] == 73u)) {
-+          v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__utility__empty_slice_u8());
-+          if (v_checksum_have != v_checksum_want) {
-+            status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
-+            goto exit;
-+          }
-+        }
-+        break;
-+      } else if (v_zlib_status.repr == wuffs_base__suspension__short_write) {
-+        if ((1u <= self->private_impl.f_interlace_pass) && (self->private_impl.f_interlace_pass <= 6u)) {
-+          break;
-+        }
-+        status = wuffs_base__make_status(wuffs_base__error__too_much_data);
-         goto exit;
--      }
--      status = wuffs_base__make_status(wuffs_zlib__note__dictionary_required);
--      goto ok;
--    }
--    self->private_impl.f_header_complete = true;
--    while (true) {
--      v_mark = ((uint64_t)(iop_a_dst - io0_a_dst));
--      {
--        if (a_dst) {
--          a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+      } else if (v_zlib_status.repr != wuffs_base__suspension__short_read) {
-+        status = v_zlib_status;
-+        if (wuffs_base__status__is_error(&status)) {
-+          goto exit;
-+        } else if (wuffs_base__status__is_suspension(&status)) {
-+          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+          goto exit;
-         }
--        if (a_src) {
--          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+        goto ok;
-+      } else if (self->private_impl.f_chunk_length == 0u) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+          uint32_t t_2;
-+          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+            t_2 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+            iop_a_src += 4;
-+          } else {
-+            self->private_data.s_decode_pass.scratch = 0;
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+            while (true) {
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint64_t* scratch = &self->private_data.s_decode_pass.scratch;
-+              uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu));
-+              *scratch >>= 8;
-+              *scratch <<= 8;
-+              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
-+              if (num_bits_2 == 24) {
-+                t_2 = ((uint32_t)(*scratch >> 32));
-+                break;
-+              }
-+              num_bits_2 += 8u;
-+              *scratch |= ((uint64_t)(num_bits_2));
-+            }
-+          }
-+          v_checksum_want = t_2;
-         }
--        wuffs_base__status t_2 = wuffs_deflate__decoder__transform_io(&self->private_data.f_flate, a_dst, a_src, a_workbuf);
--        v_status = t_2;
--        if (a_dst) {
--          iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
-+        if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_chunk_type_array[0u] == 73u)) {
-+          v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__utility__empty_slice_u8());
-+          if (v_checksum_have != v_checksum_want) {
-+            status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
-+            goto exit;
-+          }
-         }
--        if (a_src) {
--          iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+          uint32_t t_3;
-+          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+            t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+            iop_a_src += 4;
-+          } else {
-+            self->private_data.s_decode_pass.scratch = 0;
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+            while (true) {
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint64_t* scratch = &self->private_data.s_decode_pass.scratch;
-+              uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu));
-+              *scratch >>= 8;
-+              *scratch <<= 8;
-+              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
-+              if (num_bits_3 == 24) {
-+                t_3 = ((uint32_t)(*scratch >> 32));
-+                break;
-+              }
-+              num_bits_3 += 8u;
-+              *scratch |= ((uint64_t)(num_bits_3));
-+            }
-+          }
-+          self->private_impl.f_chunk_length = t_3;
-         }
--      }
--      if ( ! self->private_impl.f_ignore_checksum &&  ! self->private_impl.f_quirks[0u]) {
--        v_checksum_got = wuffs_adler32__hasher__update_u32(&self->private_data.f_checksum, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
--      }
--      if (wuffs_base__status__is_ok(&v_status)) {
--        break;
--      }
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
--    }
--    if ( ! self->private_impl.f_quirks[0u]) {
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--        uint32_t t_3;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--          t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--          iop_a_src += 4;
--        } else {
--          self->private_data.s_do_transform_io[0].scratch = 0;
-+        {
-           WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
-+          uint32_t t_4;
-+          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+            t_4 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+            iop_a_src += 4;
-+          } else {
-+            self->private_data.s_decode_pass.scratch = 0;
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+            while (true) {
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint64_t* scratch = &self->private_data.s_decode_pass.scratch;
-+              uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
-+              *scratch <<= 8;
-+              *scratch >>= 8;
-+              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
-+              if (num_bits_4 == 24) {
-+                t_4 = ((uint32_t)(*scratch));
-+                break;
-+              }
-+              num_bits_4 += 8u;
-+              *scratch |= ((uint64_t)(num_bits_4)) << 56;
-             }
--            uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch;
--            uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu));
--            *scratch >>= 8;
--            *scratch <<= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
--            if (num_bits_3 == 24) {
--              t_3 = ((uint32_t)(*scratch >> 32));
--              break;
-+          }
-+          self->private_impl.f_chunk_type = t_4;
-+        }
-+        if (self->private_impl.f_chunk_type_array[0u] == 73u) {
-+          if (self->private_impl.f_chunk_type != 1413563465u) {
-+            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+            goto exit;
-+          }
-+          if ( ! self->private_impl.f_ignore_checksum) {
-+            wuffs_private_impl__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
-+                sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
-+            wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4));
-+          }
-+        } else {
-+          if ((self->private_impl.f_chunk_type != 1413571686u) || (self->private_impl.f_chunk_length < 4u)) {
-+            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+            goto exit;
-+          }
-+          self->private_impl.f_chunk_length -= 4u;
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+            uint32_t t_5;
-+            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+              t_5 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+              iop_a_src += 4;
-+            } else {
-+              self->private_data.s_decode_pass.scratch = 0;
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
-+              while (true) {
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint64_t* scratch = &self->private_data.s_decode_pass.scratch;
-+                uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFFu));
-+                *scratch >>= 8;
-+                *scratch <<= 8;
-+                *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5);
-+                if (num_bits_5 == 24) {
-+                  t_5 = ((uint32_t)(*scratch >> 32));
-+                  break;
-+                }
-+                num_bits_5 += 8u;
-+                *scratch |= ((uint64_t)(num_bits_5));
-+              }
-             }
--            num_bits_3 += 8u;
--            *scratch |= ((uint64_t)(num_bits_3));
-+            v_seq_num = t_5;
-+          }
-+          if (v_seq_num != self->private_impl.f_next_animation_seq_num) {
-+            status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number);
-+            goto exit;
-+          } else if (self->private_impl.f_next_animation_seq_num >= 4294967295u) {
-+            status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
-+            goto exit;
-           }
-+          self->private_impl.f_next_animation_seq_num += 1u;
-         }
--        v_checksum_want = t_3;
--      }
--      if ( ! self->private_impl.f_ignore_checksum && (v_checksum_got != v_checksum_want)) {
--        status = wuffs_base__make_status(wuffs_zlib__error__bad_checksum);
-+        continue;
-+      } else if (((uint64_t)(io2_a_src - iop_a_src)) > 0u) {
-+        status = wuffs_base__make_status(wuffs_png__error__internal_error_zlib_decoder_did_not_exhaust_its_input);
-         goto exit;
-       }
-+      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11);
-+    }
-+    if (self->private_impl.f_workbuf_wi != self->private_impl.f_pass_workbuf_length) {
-+      status = wuffs_base__make_status(wuffs_base__error__not_enough_data);
-+      goto exit;
-+    } else if (0u < ((uint64_t)(a_workbuf.len))) {
-+      if (a_workbuf.ptr[0u] == 4u) {
-+        a_workbuf.ptr[0u] = 1u;
-+      }
-     }
- 
-     ok:
--    self->private_impl.p_do_transform_io[0] = 0;
-+    self->private_impl.p_decode_pass = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_do_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_do_transform_io[0].v_checksum_got = v_checksum_got;
-+  self->private_impl.p_decode_pass = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
-   goto exit;
-   exit:
--  if (a_dst && a_dst->data.ptr) {
--    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--  }
-   if (a_src && a_src->data.ptr) {
-     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
-@@ -52440,2021 +66092,1710 @@ wuffs_zlib__decoder__do_transform_io(
-   return status;
- }
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ZLIB)
--
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG)
--
--// ---------------- Status Codes Implementations
--
--const char wuffs_png__error__bad_animation_sequence_number[] = "#png: bad animation sequence number";
--const char wuffs_png__error__bad_checksum[] = "#png: bad checksum";
--const char wuffs_png__error__bad_chunk[] = "#png: bad chunk";
--const char wuffs_png__error__bad_filter[] = "#png: bad filter";
--const char wuffs_png__error__bad_header[] = "#png: bad header";
--const char wuffs_png__error__bad_text_chunk_not_latin_1[] = "#png: bad text chunk (not Latin-1)";
--const char wuffs_png__error__missing_palette[] = "#png: missing palette";
--const char wuffs_png__error__truncated_input[] = "#png: truncated input";
--const char wuffs_png__error__unsupported_cgbi_extension[] = "#png: unsupported CgBI extension";
--const char wuffs_png__error__unsupported_png_compression_method[] = "#png: unsupported PNG compression method";
--const char wuffs_png__error__unsupported_png_file[] = "#png: unsupported PNG file";
--const char wuffs_png__error__internal_error_inconsistent_i_o[] = "#png: internal error: inconsistent I/O";
--const char wuffs_png__error__internal_error_inconsistent_chunk_type[] = "#png: internal error: inconsistent chunk type";
--const char wuffs_png__error__internal_error_inconsistent_frame_bounds[] = "#png: internal error: inconsistent frame bounds";
--const char wuffs_png__error__internal_error_inconsistent_workbuf_length[] = "#png: internal error: inconsistent workbuf length";
--const char wuffs_png__error__internal_error_zlib_decoder_did_not_exhaust_its_input[] = "#png: internal error: zlib decoder did not exhaust its input";
--
--// ---------------- Private Consts
--
--#define WUFFS_PNG__ANCILLARY_BIT 32
--
--static const uint8_t
--WUFFS_PNG__INTERLACING[8][6] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  {
--    0, 0, 0, 0, 0, 0,
--  }, {
--    3, 7, 0, 3, 7, 0,
--  }, {
--    3, 3, 4, 3, 7, 0,
--  }, {
--    2, 3, 0, 3, 3, 4,
--  }, {
--    2, 1, 2, 2, 3, 0,
--  }, {
--    1, 1, 0, 2, 1, 2,
--  }, {
--    1, 0, 1, 1, 1, 0,
--  }, {
--    0, 0, 0, 1, 0, 1,
--  },
--};
--
--static const uint8_t
--WUFFS_PNG__LOW_BIT_DEPTH_MULTIPLIERS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  0, 255, 85, 0, 17, 0, 0, 0,
--};
--
--static const uint8_t
--WUFFS_PNG__LOW_BIT_DEPTH_NUM_PACKS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  0, 8, 4, 0, 2, 0, 0, 0,
--};
--
--static const uint8_t
--WUFFS_PNG__NUM_CHANNELS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  1, 0, 3, 1, 2, 0, 4, 0,
--};
--
--static const uint16_t
--WUFFS_PNG__LATIN_1[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  32, 33, 34, 35, 36, 37, 38, 39,
--  40, 41, 42, 43, 44, 45, 46, 47,
--  48, 49, 50, 51, 52, 53, 54, 55,
--  56, 57, 58, 59, 60, 61, 62, 63,
--  64, 65, 66, 67, 68, 69, 70, 71,
--  72, 73, 74, 75, 76, 77, 78, 79,
--  80, 81, 82, 83, 84, 85, 86, 87,
--  88, 89, 90, 91, 92, 93, 94, 95,
--  96, 97, 98, 99, 100, 101, 102, 103,
--  104, 105, 106, 107, 108, 109, 110, 111,
--  112, 113, 114, 115, 116, 117, 118, 119,
--  120, 121, 122, 123, 124, 125, 126, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 0, 0, 0, 0, 0, 0, 0,
--  0, 41410, 41666, 41922, 42178, 42434, 42690, 42946,
--  43202, 43458, 43714, 43970, 44226, 44482, 44738, 44994,
--  45250, 45506, 45762, 46018, 46274, 46530, 46786, 47042,
--  47298, 47554, 47810, 48066, 48322, 48578, 48834, 49090,
--  32963, 33219, 33475, 33731, 33987, 34243, 34499, 34755,
--  35011, 35267, 35523, 35779, 36035, 36291, 36547, 36803,
--  37059, 37315, 37571, 37827, 38083, 38339, 38595, 38851,
--  39107, 39363, 39619, 39875, 40131, 40387, 40643, 40899,
--  41155, 41411, 41667, 41923, 42179, 42435, 42691, 42947,
--  43203, 43459, 43715, 43971, 44227, 44483, 44739, 44995,
--  45251, 45507, 45763, 46019, 46275, 46531, 46787, 47043,
--  47299, 47555, 47811, 48067, 48323, 48579, 48835, 49091,
--};
--
--// ---------------- Private Initializer Prototypes
--
--// ---------------- Private Function Prototypes
--
--#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_1_distance_4_arm_neon(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr);
--#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--
--#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_3_distance_4_arm_neon(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev);
--#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--
--#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_4_distance_3_arm_neon(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev);
--#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--
--#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_4_distance_4_arm_neon(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev);
--#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_1(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_1__choosy_default(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_1_distance_3_fallback(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_1_distance_4_fallback(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_2(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_3(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_3__choosy_default(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_3_distance_3_fallback(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_3_distance_4_fallback(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_4(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_4__choosy_default(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_4_distance_3_fallback(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_4_distance_4_fallback(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev);
--
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_1_distance_4_x86_sse42(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr);
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_3_distance_4_x86_sse42(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev);
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_4_distance_3_x86_sse42(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev);
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_4_distance_4_x86_sse42(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev);
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__do_decode_image_config(
--    wuffs_png__decoder* self,
--    wuffs_base__image_config* a_dst,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__decode_ihdr(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__assign_filter_distance(
--    wuffs_png__decoder* self);
--
--WUFFS_BASE__GENERATED_C_CODE
--static uint64_t
--wuffs_png__decoder__calculate_bytes_per_row(
--    const wuffs_png__decoder* self,
--    uint32_t a_width);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__choose_filter_implementations(
--    wuffs_png__decoder* self);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__decode_other_chunk(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src,
--    bool a_framy);
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__decode_actl(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src);
-+// -------- func png.decoder.frame_dirty_rect
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__decode_chrm(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src);
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
-+wuffs_png__decoder__frame_dirty_rect(
-+    const wuffs_png__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_rect_ie_u32();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_rect_ie_u32();
-+  }
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__decode_exif(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src);
-+  return wuffs_base__utility__make_rect_ie_u32(
-+      self->private_impl.f_frame_rect_x0,
-+      self->private_impl.f_frame_rect_y0,
-+      self->private_impl.f_frame_rect_x1,
-+      self->private_impl.f_frame_rect_y1);
-+}
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__decode_fctl(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src);
-+// -------- func png.decoder.num_animation_loops
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__decode_gama(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src);
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_png__decoder__num_animation_loops(
-+    const wuffs_png__decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__decode_iccp(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src);
-+  return self->private_impl.f_num_animation_loops_value;
-+}
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__decode_plte(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src);
-+// -------- func png.decoder.num_decoded_frame_configs
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__decode_srgb(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src);
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_png__decoder__num_decoded_frame_configs(
-+    const wuffs_png__decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__decode_trns(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src);
-+  return ((uint64_t)(self->private_impl.f_num_decoded_frame_configs_value));
-+}
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__do_decode_frame_config(
--    wuffs_png__decoder* self,
--    wuffs_base__frame_config* a_dst,
--    wuffs_base__io_buffer* a_src);
-+// -------- func png.decoder.num_decoded_frames
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__skip_frame(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src);
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_png__decoder__num_decoded_frames(
-+    const wuffs_png__decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__do_decode_frame(
--    wuffs_png__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts);
-+  return ((uint64_t)(self->private_impl.f_num_decoded_frames_value));
-+}
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__decode_pass(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__slice_u8 a_workbuf);
-+// -------- func png.decoder.restart_frame
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__do_tell_me_more(
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_png__decoder__restart_frame(
-     wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__more_information* a_minfo,
--    wuffs_base__io_buffer* a_src);
-+    uint64_t a_index,
-+    uint64_t a_io_position) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__filter_and_swizzle(
--    wuffs_png__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__slice_u8 a_workbuf);
-+  if (self->private_impl.f_call_sequence < 32u) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+  } else if ((a_index >= ((uint64_t)(self->private_impl.f_num_animation_frames_value))) || ((a_index == 0u) && (a_io_position != self->private_impl.f_first_config_io_position))) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  self->private_impl.f_call_sequence = 40u;
-+  if (self->private_impl.f_interlace_pass >= 1u) {
-+    self->private_impl.f_interlace_pass = 1u;
-+  }
-+  self->private_impl.f_frame_config_io_position = a_io_position;
-+  self->private_impl.f_num_decoded_frame_configs_value = ((uint32_t)(a_index));
-+  self->private_impl.f_num_decoded_frames_value = self->private_impl.f_num_decoded_frame_configs_value;
-+  return wuffs_base__make_status(NULL);
-+}
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__filter_and_swizzle__choosy_default(
--    wuffs_png__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__slice_u8 a_workbuf);
-+// -------- func png.decoder.set_report_metadata
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__filter_and_swizzle_tricky(
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_png__decoder__set_report_metadata(
-     wuffs_png__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__slice_u8 a_workbuf);
--
--// ---------------- VTables
-+    uint32_t a_fourcc,
-+    bool a_report) {
-+  if (!self) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_empty_struct();
-+  }
- 
--const wuffs_base__image_decoder__func_ptrs
--wuffs_png__decoder__func_ptrs_for__wuffs_base__image_decoder = {
--  (wuffs_base__status(*)(void*,
--      wuffs_base__pixel_buffer*,
--      wuffs_base__io_buffer*,
--      wuffs_base__pixel_blend,
--      wuffs_base__slice_u8,
--      wuffs_base__decode_frame_options*))(&wuffs_png__decoder__decode_frame),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__frame_config*,
--      wuffs_base__io_buffer*))(&wuffs_png__decoder__decode_frame_config),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__image_config*,
--      wuffs_base__io_buffer*))(&wuffs_png__decoder__decode_image_config),
--  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_png__decoder__frame_dirty_rect),
--  (uint64_t(*)(const void*,
--      uint32_t))(&wuffs_png__decoder__get_quirk),
--  (uint64_t(*)(const void*))(&wuffs_png__decoder__history_retain_length),
--  (uint32_t(*)(const void*))(&wuffs_png__decoder__num_animation_loops),
--  (uint64_t(*)(const void*))(&wuffs_png__decoder__num_decoded_frame_configs),
--  (uint64_t(*)(const void*))(&wuffs_png__decoder__num_decoded_frames),
--  (wuffs_base__status(*)(void*,
--      uint64_t,
--      uint64_t))(&wuffs_png__decoder__restart_frame),
--  (wuffs_base__status(*)(void*,
--      uint32_t,
--      uint64_t))(&wuffs_png__decoder__set_quirk),
--  (wuffs_base__empty_struct(*)(void*,
--      uint32_t,
--      bool))(&wuffs_png__decoder__set_report_metadata),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__io_buffer*,
--      wuffs_base__more_information*,
--      wuffs_base__io_buffer*))(&wuffs_png__decoder__tell_me_more),
--  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_png__decoder__workbuf_len),
--};
-+  if (a_fourcc == 1128813133u) {
-+    self->private_impl.f_report_metadata_chrm = a_report;
-+  } else if (a_fourcc == 1163413830u) {
-+    self->private_impl.f_report_metadata_exif = a_report;
-+  } else if (a_fourcc == 1195461953u) {
-+    self->private_impl.f_report_metadata_gama = a_report;
-+  } else if (a_fourcc == 1229144912u) {
-+    self->private_impl.f_report_metadata_iccp = a_report;
-+  } else if (a_fourcc == 1263947808u) {
-+    self->private_impl.f_report_metadata_kvp = a_report;
-+  } else if (a_fourcc == 1397901122u) {
-+    self->private_impl.f_report_metadata_srgb = a_report;
-+  }
-+  return wuffs_base__make_empty_struct();
-+}
- 
--// ---------------- Initializer Implementations
-+// -------- func png.decoder.tell_me_more
- 
--wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_png__decoder__initialize(
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_png__decoder__tell_me_more(
-     wuffs_png__decoder* self,
--    size_t sizeof_star_self,
--    uint64_t wuffs_version,
--    uint32_t options){
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__more_information* a_minfo,
-+    wuffs_base__io_buffer* a_src) {
-   if (!self) {
-     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
--  if (sizeof(*self) != sizeof_star_self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-   }
--  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
--      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
--    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+  if (!a_dst || !a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-   }
--
--  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
--    // The whole point of this if-check is to detect an uninitialized *self.
--    // We disable the warning on GCC. Clang-5.0 does not have this warning.
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
--#endif
--    if (self->private_impl.magic != 0) {
--      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
--    }
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--  } else {
--    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
--      memset(self, 0, sizeof(*self));
--      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
--    } else {
--      memset(&(self->private_impl), 0, sizeof(self->private_impl));
--    }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 4)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-   }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  self->private_impl.choosy_filter_1 = &wuffs_png__decoder__filter_1__choosy_default;
--  self->private_impl.choosy_filter_3 = &wuffs_png__decoder__filter_3__choosy_default;
--  self->private_impl.choosy_filter_4 = &wuffs_png__decoder__filter_4__choosy_default;
--  self->private_impl.choosy_filter_and_swizzle = &wuffs_png__decoder__filter_and_swizzle__choosy_default;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--  {
--    wuffs_base__status z = wuffs_crc32__ieee_hasher__initialize(
--        &self->private_data.f_crc32, sizeof(self->private_data.f_crc32), WUFFS_VERSION, options);
--    if (z.repr) {
--      return z;
--    }
--  }
--  {
--    wuffs_base__status z = wuffs_zlib__decoder__initialize(
--        &self->private_data.f_zlib, sizeof(self->private_data.f_zlib), WUFFS_VERSION, options);
--    if (z.repr) {
--      return z;
-+  uint32_t coro_susp_point = self->private_impl.p_tell_me_more;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_png__decoder__do_tell_me_more(self, a_dst, a_minfo, a_src);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_png__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-     }
--  }
--  self->private_impl.magic = WUFFS_BASE__MAGIC;
--  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
--      wuffs_base__image_decoder__vtable_name;
--  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
--      (const void*)(&wuffs_png__decoder__func_ptrs_for__wuffs_base__image_decoder);
--  return wuffs_base__make_status(NULL);
--}
- 
--wuffs_png__decoder*
--wuffs_png__decoder__alloc(void) {
--  wuffs_png__decoder* x =
--      (wuffs_png__decoder*)(calloc(sizeof(wuffs_png__decoder), 1));
--  if (!x) {
--    return NULL;
--  }
--  if (wuffs_png__decoder__initialize(
--      x, sizeof(wuffs_png__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
--    free(x);
--    return NULL;
-+    ok:
-+    self->private_impl.p_tell_me_more = 0;
-+    goto exit;
-   }
--  return x;
--}
- 
--size_t
--sizeof__wuffs_png__decoder(void) {
--  return sizeof(wuffs_png__decoder);
--}
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_tell_me_more = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 4 : 0;
- 
--// ---------------- Function Implementations
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
- 
--// ‼ WUFFS MULTI-FILE SECTION +arm_neon
--// -------- func png.decoder.filter_1_distance_4_arm_neon
-+// -------- func png.decoder.do_tell_me_more
- 
--#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_1_distance_4_arm_neon(
-+static wuffs_base__status
-+wuffs_png__decoder__do_tell_me_more(
-     wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr) {
--  wuffs_base__slice_u8 v_curr = {0};
--  uint8x8_t v_fa = {0};
--  uint8x8_t v_fx = {0};
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__more_information* a_minfo,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  {
--    wuffs_base__slice_u8 i_slice_curr = a_curr;
--    v_curr.ptr = i_slice_curr.ptr;
--    v_curr.len = 4;
--    uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
--    while (v_curr.ptr < i_end0_curr) {
--      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--      v_fx = vadd_u8(v_fx, v_fa);
--      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
--      v_fa = v_fx;
--      v_curr.ptr += 4;
--      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--      v_fx = vadd_u8(v_fx, v_fa);
--      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
--      v_fa = v_fx;
--      v_curr.ptr += 4;
--    }
--    v_curr.len = 4;
--    uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
--    while (v_curr.ptr < i_end1_curr) {
--      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--      v_fx = vadd_u8(v_fx, v_fa);
--      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
--      v_fa = v_fx;
--      v_curr.ptr += 4;
-+  uint8_t v_c8 = 0;
-+  uint16_t v_c16 = 0;
-+  wuffs_base__io_buffer u_w = wuffs_base__empty_io_buffer();
-+  wuffs_base__io_buffer* v_w = &u_w;
-+  uint8_t* iop_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io0_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io1_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io2_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint64_t v_num_written = 0;
-+  uint64_t v_w_mark = 0;
-+  uint64_t v_r_mark = 0;
-+  wuffs_base__status v_zlib_status = wuffs_base__make_status(NULL);
-+
-+  uint8_t* iop_a_dst = NULL;
-+  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-     }
--    v_curr.len = 0;
-   }
--  return wuffs_base__make_empty_struct();
--}
--#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--// ‼ WUFFS MULTI-FILE SECTION -arm_neon
--
--// ‼ WUFFS MULTI-FILE SECTION +arm_neon
--// -------- func png.decoder.filter_3_distance_4_arm_neon
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
- 
--#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_3_distance_4_arm_neon(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev) {
--  wuffs_base__slice_u8 v_curr = {0};
--  wuffs_base__slice_u8 v_prev = {0};
--  uint8x8_t v_fa = {0};
--  uint8x8_t v_fb = {0};
--  uint8x8_t v_fx = {0};
-+  uint32_t coro_susp_point = self->private_impl.p_do_tell_me_more;
-+  if (coro_susp_point) {
-+    v_zlib_status = self->private_data.s_do_tell_me_more.v_zlib_status;
-+  }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--  if (((uint64_t)(a_prev.len)) == 0u) {
--    {
--      wuffs_base__slice_u8 i_slice_curr = a_curr;
--      v_curr.ptr = i_slice_curr.ptr;
--      v_curr.len = 4;
--      uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
--      while (v_curr.ptr < i_end0_curr) {
--        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
--        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
--        v_fa = v_fx;
--        v_curr.ptr += 4;
--        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
--        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
--        v_fa = v_fx;
--        v_curr.ptr += 4;
-+    if (((uint8_t)(self->private_impl.f_call_sequence & 16u)) == 0u) {
-+      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+      goto exit;
-+    }
-+    if (self->private_impl.f_metadata_fourcc == 0u) {
-+      status = wuffs_base__make_status(wuffs_base__error__no_more_information);
-+      goto exit;
-+    }
-+    do {
-+      if (self->private_impl.f_metadata_flavor == 3u) {
-+        while (true) {
-+          if (wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))) != self->private_impl.f_metadata_y) {
-+            status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position);
-+            goto exit;
-+          } else if (a_minfo != NULL) {
-+            wuffs_base__more_information__set(a_minfo,
-+                self->private_impl.f_metadata_flavor,
-+                self->private_impl.f_metadata_fourcc,
-+                self->private_impl.f_metadata_x,
-+                self->private_impl.f_metadata_y,
-+                self->private_impl.f_metadata_z);
-+          }
-+          if (self->private_impl.f_metadata_y >= self->private_impl.f_metadata_z) {
-+            goto label__goto_done__break;
-+          }
-+          self->private_impl.f_metadata_y = self->private_impl.f_metadata_z;
-+          status = wuffs_base__make_status(wuffs_base__suspension__even_more_information);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+        }
-+      }
-+      if (self->private_impl.f_metadata_is_zlib_compressed) {
-+        if (self->private_impl.f_zlib_is_dirty) {
-+          wuffs_private_impl__ignore_status(wuffs_zlib__decoder__initialize(&self->private_data.f_zlib,
-+              sizeof (wuffs_zlib__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
-+          if (self->private_impl.f_ignore_checksum) {
-+            wuffs_zlib__decoder__set_quirk(&self->private_data.f_zlib, 1u, 1u);
-+          }
-+        }
-+        self->private_impl.f_zlib_is_dirty = true;
-+        self->private_impl.f_ztxt_hist_pos = 0u;
-+      }
-+      label__loop__continue:;
-+      while (true) {
-+        if (a_minfo != NULL) {
-+          wuffs_base__more_information__set(a_minfo,
-+              self->private_impl.f_metadata_flavor,
-+              self->private_impl.f_metadata_fourcc,
-+              self->private_impl.f_metadata_x,
-+              self->private_impl.f_metadata_y,
-+              self->private_impl.f_metadata_z);
-+        }
-+        if (self->private_impl.f_metadata_flavor != 4u) {
-+          break;
-+        }
-+        if (self->private_impl.f_metadata_is_zlib_compressed) {
-+          if (self->private_impl.f_chunk_type == 1346585449u) {
-+            {
-+              const bool o_0_closed_a_src = a_src->meta.closed;
-+              const uint8_t* o_0_io2_a_src = io2_a_src;
-+              wuffs_private_impl__io_reader__limit(&io2_a_src, iop_a_src,
-+                  ((uint64_t)(self->private_impl.f_chunk_length)));
-+              if (a_src) {
-+                size_t n = ((size_t)(io2_a_src - a_src->data.ptr));
-+                a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n);
-+                a_src->meta.wi = n;
-+              }
-+              v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
-+              {
-+                if (a_dst) {
-+                  a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+                }
-+                if (a_src) {
-+                  a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+                }
-+                wuffs_base__status t_0 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, a_dst, a_src, wuffs_base__utility__empty_slice_u8());
-+                v_zlib_status = t_0;
-+                if (a_dst) {
-+                  iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
-+                }
-+                if (a_src) {
-+                  iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+                }
-+              }
-+              wuffs_private_impl__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)(wuffs_private_impl__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))))));
-+              io2_a_src = o_0_io2_a_src;
-+              if (a_src) {
-+                a_src->meta.closed = o_0_closed_a_src;
-+                a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
-+              }
-+            }
-+            if (wuffs_base__status__is_ok(&v_zlib_status)) {
-+              self->private_impl.f_metadata_is_zlib_compressed = false;
-+              break;
-+            } else if ( ! wuffs_base__status__is_suspension(&v_zlib_status)) {
-+              status = v_zlib_status;
-+              if (wuffs_base__status__is_error(&status)) {
-+                goto exit;
-+              } else if (wuffs_base__status__is_suspension(&status)) {
-+                status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+                goto exit;
-+              }
-+              goto ok;
-+            }
-+            status = v_zlib_status;
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
-+          } else if (self->private_impl.f_chunk_type == 1951945833u) {
-+            {
-+              const bool o_1_closed_a_src = a_src->meta.closed;
-+              const uint8_t* o_1_io2_a_src = io2_a_src;
-+              wuffs_private_impl__io_reader__limit(&io2_a_src, iop_a_src,
-+                  ((uint64_t)(self->private_impl.f_chunk_length)));
-+              if (a_src) {
-+                size_t n = ((size_t)(io2_a_src - a_src->data.ptr));
-+                a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n);
-+                a_src->meta.wi = n;
-+              }
-+              v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
-+              {
-+                if (a_dst) {
-+                  a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+                }
-+                if (a_src) {
-+                  a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+                }
-+                wuffs_base__status t_1 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, a_dst, a_src, wuffs_base__utility__empty_slice_u8());
-+                v_zlib_status = t_1;
-+                if (a_dst) {
-+                  iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
-+                }
-+                if (a_src) {
-+                  iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+                }
-+              }
-+              wuffs_private_impl__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)(wuffs_private_impl__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))))));
-+              io2_a_src = o_1_io2_a_src;
-+              if (a_src) {
-+                a_src->meta.closed = o_1_closed_a_src;
-+                a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
-+              }
-+            }
-+            if (wuffs_base__status__is_ok(&v_zlib_status)) {
-+              self->private_impl.f_metadata_is_zlib_compressed = false;
-+              break;
-+            } else if ( ! wuffs_base__status__is_suspension(&v_zlib_status)) {
-+              status = v_zlib_status;
-+              if (wuffs_base__status__is_error(&status)) {
-+                goto exit;
-+              } else if (wuffs_base__status__is_suspension(&status)) {
-+                status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+                goto exit;
-+              }
-+              goto ok;
-+            }
-+            status = v_zlib_status;
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
-+          } else if (self->private_impl.f_chunk_type == 1951945850u) {
-+            if (self->private_impl.f_ztxt_ri == self->private_impl.f_ztxt_wi) {
-+              {
-+                wuffs_base__io_buffer* o_2_v_w = v_w;
-+                uint8_t* o_2_iop_v_w = iop_v_w;
-+                uint8_t* o_2_io0_v_w = io0_v_w;
-+                uint8_t* o_2_io1_v_w = io1_v_w;
-+                uint8_t* o_2_io2_v_w = io2_v_w;
-+                v_w = wuffs_private_impl__io_writer__set(
-+                    &u_w,
-+                    &iop_v_w,
-+                    &io0_v_w,
-+                    &io1_v_w,
-+                    &io2_v_w,
-+                    wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024),
-+                    self->private_impl.f_ztxt_hist_pos);
-+                {
-+                  const bool o_3_closed_a_src = a_src->meta.closed;
-+                  const uint8_t* o_3_io2_a_src = io2_a_src;
-+                  wuffs_private_impl__io_reader__limit(&io2_a_src, iop_a_src,
-+                      ((uint64_t)(self->private_impl.f_chunk_length)));
-+                  if (a_src) {
-+                    size_t n = ((size_t)(io2_a_src - a_src->data.ptr));
-+                    a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n);
-+                    a_src->meta.wi = n;
-+                  }
-+                  v_w_mark = ((uint64_t)(iop_v_w - io0_v_w));
-+                  v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
-+                  {
-+                    u_w.meta.wi = ((size_t)(iop_v_w - u_w.data.ptr));
-+                    if (a_src) {
-+                      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+                    }
-+                    wuffs_base__status t_2 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, v_w, a_src, wuffs_base__utility__empty_slice_u8());
-+                    v_zlib_status = t_2;
-+                    iop_v_w = u_w.data.ptr + u_w.meta.wi;
-+                    if (a_src) {
-+                      iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+                    }
-+                  }
-+                  wuffs_private_impl__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)(wuffs_private_impl__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))))));
-+                  v_num_written = wuffs_private_impl__io__count_since(v_w_mark, ((uint64_t)(iop_v_w - io0_v_w)));
-+                  io2_a_src = o_3_io2_a_src;
-+                  if (a_src) {
-+                    a_src->meta.closed = o_3_closed_a_src;
-+                    a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
-+                  }
-+                }
-+                v_w = o_2_v_w;
-+                iop_v_w = o_2_iop_v_w;
-+                io0_v_w = o_2_io0_v_w;
-+                io1_v_w = o_2_io1_v_w;
-+                io2_v_w = o_2_io2_v_w;
-+              }
-+              if (v_num_written > 1024u) {
-+                status = wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_i_o);
-+                goto exit;
-+              }
-+              self->private_impl.f_ztxt_ri = 0u;
-+              self->private_impl.f_ztxt_wi = ((uint32_t)(v_num_written));
-+              wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_ztxt_hist_pos, v_num_written);
-+            }
-+            while (self->private_impl.f_ztxt_ri < self->private_impl.f_ztxt_wi) {
-+              v_c16 = WUFFS_PNG__LATIN_1[self->private_data.f_dst_palette[self->private_impl.f_ztxt_ri]];
-+              if (v_c16 == 0u) {
-+                status = wuffs_base__make_status(wuffs_png__error__bad_text_chunk_not_latin_1);
-+                goto exit;
-+              } else if (v_c16 <= 127u) {
-+                if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
-+                  goto label__loop__continue;
-+                }
-+                self->private_impl.f_ztxt_ri += 1u;
-+                (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(v_c16))), iop_a_dst += 1);
-+              } else {
-+                if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 1u) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
-+                  goto label__loop__continue;
-+                }
-+                self->private_impl.f_ztxt_ri += 1u;
-+                (wuffs_base__poke_u16le__no_bounds_check(iop_a_dst, v_c16), iop_a_dst += 2);
-+              }
-+            }
-+            if (wuffs_base__status__is_ok(&v_zlib_status)) {
-+              self->private_impl.f_metadata_is_zlib_compressed = false;
-+              break;
-+            } else if ( ! wuffs_base__status__is_suspension(&v_zlib_status)) {
-+              status = v_zlib_status;
-+              if (wuffs_base__status__is_error(&status)) {
-+                goto exit;
-+              } else if (wuffs_base__status__is_suspension(&status)) {
-+                status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+                goto exit;
-+              }
-+              goto ok;
-+            } else if (v_zlib_status.repr != wuffs_base__suspension__short_write) {
-+              status = v_zlib_status;
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
-+            }
-+          } else {
-+            status = wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_chunk_type);
-+            goto exit;
-+          }
-+        } else if ((self->private_impl.f_chunk_type == 1951945833u) && (self->private_impl.f_metadata_fourcc == 1263947862u)) {
-+          while (true) {
-+            if (self->private_impl.f_chunk_length <= 0u) {
-+              goto label__loop__break;
-+            } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
-+              goto label__loop__continue;
-+            } else if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
-+              goto label__loop__continue;
-+            }
-+            self->private_impl.f_chunk_length -= 1u;
-+            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+            iop_a_src += 1u;
-+            (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_c8), iop_a_dst += 1);
-+          }
-+        } else {
-+          while (true) {
-+            if (self->private_impl.f_chunk_length <= 0u) {
-+              if (self->private_impl.f_metadata_fourcc == 1263947851u) {
-+                status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+                goto exit;
-+              }
-+              goto label__loop__break;
-+            } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
-+              goto label__loop__continue;
-+            }
-+            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+            if (v_c8 == 0u) {
-+              self->private_impl.f_chunk_length -= 1u;
-+              iop_a_src += 1u;
-+              goto label__loop__break;
-+            }
-+            v_c16 = WUFFS_PNG__LATIN_1[v_c8];
-+            if (v_c16 == 0u) {
-+              status = wuffs_base__make_status(wuffs_png__error__bad_text_chunk_not_latin_1);
-+              goto exit;
-+            } else if (v_c16 <= 127u) {
-+              if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
-+                goto label__loop__continue;
-+              }
-+              self->private_impl.f_chunk_length -= 1u;
-+              iop_a_src += 1u;
-+              (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(v_c16))), iop_a_dst += 1);
-+            } else {
-+              if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 1u) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11);
-+                goto label__loop__continue;
-+              }
-+              self->private_impl.f_chunk_length -= 1u;
-+              iop_a_src += 1u;
-+              (wuffs_base__poke_u16le__no_bounds_check(iop_a_dst, v_c16), iop_a_dst += 2);
-+            }
-+          }
-+        }
-       }
--      v_curr.len = 4;
--      uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
--      while (v_curr.ptr < i_end1_curr) {
--        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
--        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
--        v_fa = v_fx;
--        v_curr.ptr += 4;
-+      label__loop__break:;
-+      if (self->private_impl.f_metadata_fourcc == 1263947851u) {
-+        self->private_impl.f_metadata_fourcc = 1263947862u;
-+        if (self->private_impl.f_chunk_type == 1951945833u) {
-+          if (self->private_impl.f_chunk_length <= 1u) {
-+            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+            goto exit;
-+          }
-+          self->private_impl.f_chunk_length -= 2u;
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint8_t t_3 = *iop_a_src++;
-+            v_c8 = t_3;
-+          }
-+          if (v_c8 == 0u) {
-+            self->private_impl.f_metadata_is_zlib_compressed = false;
-+          } else if (v_c8 == 1u) {
-+            self->private_impl.f_metadata_is_zlib_compressed = true;
-+          } else {
-+            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+            goto exit;
-+          }
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint8_t t_4 = *iop_a_src++;
-+            v_c8 = t_4;
-+          }
-+          if ((v_c8 != 0u) && self->private_impl.f_metadata_is_zlib_compressed) {
-+            status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method);
-+            goto exit;
-+          }
-+          self->private_impl.f_metadata_fourcc -= 2u;
-+          while (self->private_impl.f_metadata_fourcc != 1263947862u) {
-+            self->private_impl.f_metadata_fourcc += 1u;
-+            while (true) {
-+              if (self->private_impl.f_chunk_length <= 0u) {
-+                status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+                goto exit;
-+              }
-+              self->private_impl.f_chunk_length -= 1u;
-+              {
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint8_t t_5 = *iop_a_src++;
-+                v_c8 = t_5;
-+              }
-+              if (v_c8 == 0u) {
-+                break;
-+              }
-+            }
-+          }
-+        } else if (self->private_impl.f_chunk_type == 1951945850u) {
-+          if (self->private_impl.f_chunk_length <= 0u) {
-+            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+            goto exit;
-+          }
-+          self->private_impl.f_chunk_length -= 1u;
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint8_t t_6 = *iop_a_src++;
-+            v_c8 = t_6;
-+          }
-+          if (v_c8 != 0u) {
-+            status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method);
-+            goto exit;
-+          }
-+          self->private_impl.f_metadata_is_zlib_compressed = true;
-+        }
-+        self->private_impl.f_call_sequence &= 239u;
-+        status = wuffs_base__make_status(NULL);
-+        goto ok;
-       }
--      v_curr.len = 0;
-+    } while (0);
-+    label__goto_done__break:;
-+    if (self->private_impl.f_chunk_length != 0u) {
-+      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+      goto exit;
-     }
--  } else {
--    {
--      wuffs_base__slice_u8 i_slice_curr = a_curr;
--      v_curr.ptr = i_slice_curr.ptr;
--      wuffs_base__slice_u8 i_slice_prev = a_prev;
--      v_prev.ptr = i_slice_prev.ptr;
--      i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
--      v_curr.len = 4;
--      v_prev.len = 4;
--      uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
--      while (v_curr.ptr < i_end0_curr) {
--        v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
--        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
--        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
--        v_fa = v_fx;
--        v_curr.ptr += 4;
--        v_prev.ptr += 4;
--        v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
--        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
--        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
--        v_fa = v_fx;
--        v_curr.ptr += 4;
--        v_prev.ptr += 4;
--      }
--      v_curr.len = 4;
--      v_prev.len = 4;
--      uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
--      while (v_curr.ptr < i_end1_curr) {
--        v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
--        v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--        v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
--        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
--        v_fa = v_fx;
--        v_curr.ptr += 4;
--        v_prev.ptr += 4;
--      }
--      v_curr.len = 0;
--      v_prev.len = 0;
-+    self->private_data.s_do_tell_me_more.scratch = 4u;
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
-+    if (self->private_data.s_do_tell_me_more.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+      self->private_data.s_do_tell_me_more.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+      iop_a_src = io2_a_src;
-+      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+      goto suspend;
-     }
--  }
--  return wuffs_base__make_empty_struct();
--}
--#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--// ‼ WUFFS MULTI-FILE SECTION -arm_neon
--
--// ‼ WUFFS MULTI-FILE SECTION +arm_neon
--// -------- func png.decoder.filter_4_distance_3_arm_neon
--
--#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_4_distance_3_arm_neon(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev) {
--  wuffs_base__slice_u8 v_curr = {0};
--  wuffs_base__slice_u8 v_prev = {0};
--  uint8x8_t v_fa = {0};
--  uint8x8_t v_fb = {0};
--  uint8x8_t v_fc = {0};
--  uint8x8_t v_fx = {0};
--  uint16x8_t v_fafb = {0};
--  uint16x8_t v_fcfc = {0};
--  uint16x8_t v_pa = {0};
--  uint16x8_t v_pb = {0};
--  uint16x8_t v_pc = {0};
--  uint16x8_t v_cmpab = {0};
--  uint16x8_t v_cmpac = {0};
--  uint8x8_t v_picka = {0};
--  uint8x8_t v_pickb = {0};
-+    iop_a_src += self->private_data.s_do_tell_me_more.scratch;
-+    self->private_impl.f_metadata_flavor = 0u;
-+    self->private_impl.f_metadata_fourcc = 0u;
-+    self->private_impl.f_metadata_x = 0u;
-+    self->private_impl.f_metadata_y = 0u;
-+    self->private_impl.f_metadata_z = 0u;
-+    self->private_impl.f_call_sequence &= 239u;
-+    status = wuffs_base__make_status(NULL);
-+    goto ok;
- 
--  {
--    wuffs_base__slice_u8 i_slice_curr = a_curr;
--    v_curr.ptr = i_slice_curr.ptr;
--    wuffs_base__slice_u8 i_slice_prev = a_prev;
--    v_prev.ptr = i_slice_prev.ptr;
--    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
--    v_curr.len = 4;
--    v_prev.len = 4;
--    uint8_t* i_end0_curr = v_curr.ptr + wuffs_base__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 7, 6);
--    while (v_curr.ptr < i_end0_curr) {
--      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
--      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--      v_fafb = vaddl_u8(v_fa, v_fb);
--      v_fcfc = vaddl_u8(v_fc, v_fc);
--      v_pa = vabdl_u8(v_fb, v_fc);
--      v_pb = vabdl_u8(v_fa, v_fc);
--      v_pc = vabdq_u16(v_fafb, v_fcfc);
--      v_cmpab = vcleq_u16(v_pa, v_pb);
--      v_cmpac = vcleq_u16(v_pa, v_pc);
--      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
--      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
--      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
--      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
--      v_fc = v_fb;
--      v_fa = v_fx;
--      v_curr.ptr += 3;
--      v_prev.ptr += 3;
--      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
--      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--      v_fafb = vaddl_u8(v_fa, v_fb);
--      v_fcfc = vaddl_u8(v_fc, v_fc);
--      v_pa = vabdl_u8(v_fb, v_fc);
--      v_pb = vabdl_u8(v_fa, v_fc);
--      v_pc = vabdq_u16(v_fafb, v_fcfc);
--      v_cmpab = vcleq_u16(v_pa, v_pb);
--      v_cmpac = vcleq_u16(v_pa, v_pc);
--      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
--      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
--      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
--      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
--      v_fc = v_fb;
--      v_fa = v_fx;
--      v_curr.ptr += 3;
--      v_prev.ptr += 3;
--    }
--    v_curr.len = 4;
--    v_prev.len = 4;
--    uint8_t* i_end1_curr = v_curr.ptr + wuffs_base__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 4, 3);
--    while (v_curr.ptr < i_end1_curr) {
--      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
--      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--      v_fafb = vaddl_u8(v_fa, v_fb);
--      v_fcfc = vaddl_u8(v_fc, v_fc);
--      v_pa = vabdl_u8(v_fb, v_fc);
--      v_pb = vabdl_u8(v_fa, v_fc);
--      v_pc = vabdq_u16(v_fafb, v_fcfc);
--      v_cmpab = vcleq_u16(v_pa, v_pb);
--      v_cmpac = vcleq_u16(v_pa, v_pc);
--      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
--      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
--      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
--      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
--      v_fc = v_fb;
--      v_fa = v_fx;
--      v_curr.ptr += 3;
--      v_prev.ptr += 3;
--    }
--    v_curr.len = 3;
--    v_prev.len = 3;
--    uint8_t* i_end2_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3);
--    while (v_curr.ptr < i_end2_curr) {
--      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u24le__no_bounds_check(v_prev.ptr)));
--      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u24le__no_bounds_check(v_curr.ptr)));
--      v_fafb = vaddl_u8(v_fa, v_fb);
--      v_fcfc = vaddl_u8(v_fc, v_fc);
--      v_pa = vabdl_u8(v_fb, v_fc);
--      v_pb = vabdl_u8(v_fa, v_fc);
--      v_pc = vabdq_u16(v_fafb, v_fcfc);
--      v_cmpab = vcleq_u16(v_pa, v_pb);
--      v_cmpac = vcleq_u16(v_pa, v_pc);
--      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
--      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
--      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
--      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
--      v_curr.ptr += 3;
--      v_prev.ptr += 3;
--    }
--    v_curr.len = 0;
--    v_prev.len = 0;
-+    ok:
-+    self->private_impl.p_do_tell_me_more = 0;
-+    goto exit;
-   }
--  return wuffs_base__make_empty_struct();
--}
--#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--// ‼ WUFFS MULTI-FILE SECTION -arm_neon
- 
--// ‼ WUFFS MULTI-FILE SECTION +arm_neon
--// -------- func png.decoder.filter_4_distance_4_arm_neon
--
--#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_4_distance_4_arm_neon(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev) {
--  wuffs_base__slice_u8 v_curr = {0};
--  wuffs_base__slice_u8 v_prev = {0};
--  uint8x8_t v_fa = {0};
--  uint8x8_t v_fb = {0};
--  uint8x8_t v_fc = {0};
--  uint8x8_t v_fx = {0};
--  uint16x8_t v_fafb = {0};
--  uint16x8_t v_fcfc = {0};
--  uint16x8_t v_pa = {0};
--  uint16x8_t v_pb = {0};
--  uint16x8_t v_pc = {0};
--  uint16x8_t v_cmpab = {0};
--  uint16x8_t v_cmpac = {0};
--  uint8x8_t v_picka = {0};
--  uint8x8_t v_pickb = {0};
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_tell_me_more = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_do_tell_me_more.v_zlib_status = v_zlib_status;
- 
--  {
--    wuffs_base__slice_u8 i_slice_curr = a_curr;
--    v_curr.ptr = i_slice_curr.ptr;
--    wuffs_base__slice_u8 i_slice_prev = a_prev;
--    v_prev.ptr = i_slice_prev.ptr;
--    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
--    v_curr.len = 4;
--    v_prev.len = 4;
--    uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
--    while (v_curr.ptr < i_end0_curr) {
--      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
--      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--      v_fafb = vaddl_u8(v_fa, v_fb);
--      v_fcfc = vaddl_u8(v_fc, v_fc);
--      v_pa = vabdl_u8(v_fb, v_fc);
--      v_pb = vabdl_u8(v_fa, v_fc);
--      v_pc = vabdq_u16(v_fafb, v_fcfc);
--      v_cmpab = vcleq_u16(v_pa, v_pb);
--      v_cmpac = vcleq_u16(v_pa, v_pc);
--      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
--      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
--      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
--      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
--      v_fc = v_fb;
--      v_fa = v_fx;
--      v_curr.ptr += 4;
--      v_prev.ptr += 4;
--      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
--      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--      v_fafb = vaddl_u8(v_fa, v_fb);
--      v_fcfc = vaddl_u8(v_fc, v_fc);
--      v_pa = vabdl_u8(v_fb, v_fc);
--      v_pb = vabdl_u8(v_fa, v_fc);
--      v_pc = vabdq_u16(v_fafb, v_fcfc);
--      v_cmpab = vcleq_u16(v_pa, v_pb);
--      v_cmpac = vcleq_u16(v_pa, v_pc);
--      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
--      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
--      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
--      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
--      v_fc = v_fb;
--      v_fa = v_fx;
--      v_curr.ptr += 4;
--      v_prev.ptr += 4;
--    }
--    v_curr.len = 4;
--    v_prev.len = 4;
--    uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
--    while (v_curr.ptr < i_end1_curr) {
--      v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
--      v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--      v_fafb = vaddl_u8(v_fa, v_fb);
--      v_fcfc = vaddl_u8(v_fc, v_fc);
--      v_pa = vabdl_u8(v_fb, v_fc);
--      v_pb = vabdl_u8(v_fa, v_fc);
--      v_pc = vabdq_u16(v_fafb, v_fcfc);
--      v_cmpab = vcleq_u16(v_pa, v_pb);
--      v_cmpac = vcleq_u16(v_pa, v_pc);
--      v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
--      v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
--      v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
--      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0u));
--      v_fc = v_fb;
--      v_fa = v_fx;
--      v_curr.ptr += 4;
--      v_prev.ptr += 4;
--    }
--    v_curr.len = 0;
--    v_prev.len = 0;
-+  goto exit;
-+  exit:
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-   }
--  return wuffs_base__make_empty_struct();
--}
--#endif  // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--// ‼ WUFFS MULTI-FILE SECTION -arm_neon
--
--// -------- func png.decoder.filter_1
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_1(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr) {
--  return (*self->private_impl.choosy_filter_1)(self, a_curr);
--}
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_1__choosy_default(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr) {
--  uint64_t v_filter_distance = 0;
--  uint8_t v_fa = 0;
--  uint64_t v_i_start = 0;
--  uint64_t v_i = 0;
--
--  v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance));
--  v_i_start = 0u;
--  while (v_i_start < v_filter_distance) {
--    v_fa = 0u;
--    v_i = v_i_start;
--    while (v_i < ((uint64_t)(a_curr.len))) {
--      a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + v_fa));
--      v_fa = a_curr.ptr[v_i];
--      v_i += v_filter_distance;
--    }
--    v_i_start += 1u;
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
--  return wuffs_base__make_empty_struct();
--}
--
--// -------- func png.decoder.filter_1_distance_3_fallback
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_1_distance_3_fallback(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr) {
--  wuffs_base__slice_u8 v_curr = {0};
--  uint8_t v_fa0 = 0;
--  uint8_t v_fa1 = 0;
--  uint8_t v_fa2 = 0;
- 
--  {
--    wuffs_base__slice_u8 i_slice_curr = a_curr;
--    v_curr.ptr = i_slice_curr.ptr;
--    v_curr.len = 3;
--    uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 6) * 6);
--    while (v_curr.ptr < i_end0_curr) {
--      v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0u]));
--      v_curr.ptr[0u] = v_fa0;
--      v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1u]));
--      v_curr.ptr[1u] = v_fa1;
--      v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2u]));
--      v_curr.ptr[2u] = v_fa2;
--      v_curr.ptr += 3;
--      v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0u]));
--      v_curr.ptr[0u] = v_fa0;
--      v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1u]));
--      v_curr.ptr[1u] = v_fa1;
--      v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2u]));
--      v_curr.ptr[2u] = v_fa2;
--      v_curr.ptr += 3;
--    }
--    v_curr.len = 3;
--    uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3);
--    while (v_curr.ptr < i_end1_curr) {
--      v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0u]));
--      v_curr.ptr[0u] = v_fa0;
--      v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1u]));
--      v_curr.ptr[1u] = v_fa1;
--      v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2u]));
--      v_curr.ptr[2u] = v_fa2;
--      v_curr.ptr += 3;
--    }
--    v_curr.len = 0;
--  }
--  return wuffs_base__make_empty_struct();
-+  return status;
- }
- 
--// -------- func png.decoder.filter_1_distance_4_fallback
-+// -------- func png.decoder.workbuf_len
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_1_distance_4_fallback(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr) {
--  wuffs_base__slice_u8 v_curr = {0};
--  uint8_t v_fa0 = 0;
--  uint8_t v_fa1 = 0;
--  uint8_t v_fa2 = 0;
--  uint8_t v_fa3 = 0;
--
--  {
--    wuffs_base__slice_u8 i_slice_curr = a_curr;
--    v_curr.ptr = i_slice_curr.ptr;
--    v_curr.len = 4;
--    uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
--    while (v_curr.ptr < i_end0_curr) {
--      v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0u]));
--      v_curr.ptr[0u] = v_fa0;
--      v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1u]));
--      v_curr.ptr[1u] = v_fa1;
--      v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2u]));
--      v_curr.ptr[2u] = v_fa2;
--      v_fa3 = ((uint8_t)(v_fa3 + v_curr.ptr[3u]));
--      v_curr.ptr[3u] = v_fa3;
--      v_curr.ptr += 4;
--    }
--    v_curr.len = 0;
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_png__decoder__workbuf_len(
-+    const wuffs_png__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-   }
--  return wuffs_base__make_empty_struct();
--}
--
--// -------- func png.decoder.filter_2
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_2(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev) {
--  uint64_t v_n = 0;
--  uint64_t v_i = 0;
--
--  v_n = wuffs_base__u64__min(((uint64_t)(a_curr.len)), ((uint64_t)(a_prev.len)));
--  v_i = 0u;
--  while (v_i < v_n) {
--    a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + a_prev.ptr[v_i]));
--    v_i += 1u;
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-   }
--  return wuffs_base__make_empty_struct();
-+
-+  return wuffs_base__utility__make_range_ii_u64(self->private_impl.f_overall_workbuf_length, self->private_impl.f_overall_workbuf_length);
- }
- 
--// -------- func png.decoder.filter_3
-+// -------- func png.decoder.filter_and_swizzle
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_3(
-+static wuffs_base__status
-+wuffs_png__decoder__filter_and_swizzle(
-     wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev) {
--  return (*self->private_impl.choosy_filter_3)(self, a_curr, a_prev);
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  return (*self->private_impl.choosy_filter_and_swizzle)(self, a_dst, a_workbuf);
- }
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_3__choosy_default(
-+static wuffs_base__status
-+wuffs_png__decoder__filter_and_swizzle__choosy_default(
-     wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev) {
--  uint64_t v_filter_distance = 0;
--  uint64_t v_n = 0;
--  uint64_t v_i = 0;
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  wuffs_base__pixel_format v_dst_pixfmt = {0};
-+  uint32_t v_dst_bits_per_pixel = 0;
-+  uint64_t v_dst_bytes_per_pixel = 0;
-+  uint64_t v_dst_bytes_per_row0 = 0;
-+  uint64_t v_dst_bytes_per_row1 = 0;
-+  wuffs_base__slice_u8 v_dst_palette = {0};
-+  wuffs_base__table_u8 v_tab = {0};
-+  uint32_t v_y = 0;
-+  wuffs_base__slice_u8 v_dst = {0};
-+  uint8_t v_filter = 0;
-+  wuffs_base__slice_u8 v_curr_row = {0};
-+  wuffs_base__slice_u8 v_prev_row = {0};
- 
--  v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance));
--  if (((uint64_t)(a_prev.len)) == 0u) {
--    v_i = v_filter_distance;
--    while (v_i < ((uint64_t)(a_curr.len))) {
--      a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + (a_curr.ptr[(v_i - v_filter_distance)] / 2u)));
--      v_i += 1u;
--    }
-+  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
-+  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
-+  if ((v_dst_bits_per_pixel & 7u) != 0u) {
-+    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+  }
-+  v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8u)));
-+  v_dst_bytes_per_row0 = (((uint64_t)(self->private_impl.f_frame_rect_x0)) * v_dst_bytes_per_pixel);
-+  v_dst_bytes_per_row1 = (((uint64_t)(self->private_impl.f_frame_rect_x1)) * v_dst_bytes_per_pixel);
-+  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024));
-+  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
-+  if (v_dst_bytes_per_row1 < ((uint64_t)(v_tab.width))) {
-+    v_tab = wuffs_base__table_u8__subtable_ij(v_tab,
-+        0u,
-+        0u,
-+        v_dst_bytes_per_row1,
-+        ((uint64_t)(v_tab.height)));
-+  }
-+  if (v_dst_bytes_per_row0 < ((uint64_t)(v_tab.width))) {
-+    v_tab = wuffs_base__table_u8__subtable_ij(v_tab,
-+        v_dst_bytes_per_row0,
-+        0u,
-+        ((uint64_t)(v_tab.width)),
-+        ((uint64_t)(v_tab.height)));
-   } else {
--    v_n = wuffs_base__u64__min(((uint64_t)(a_curr.len)), ((uint64_t)(a_prev.len)));
--    v_i = 0u;
--    while ((v_i < v_n) && (v_i < v_filter_distance)) {
--      a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + (a_prev.ptr[v_i] / 2u)));
--      v_i += 1u;
-+    v_tab = wuffs_base__table_u8__subtable_ij(v_tab,
-+        0u,
-+        0u,
-+        0u,
-+        0u);
-+  }
-+  v_y = self->private_impl.f_frame_rect_y0;
-+  while (v_y < self->private_impl.f_frame_rect_y1) {
-+    v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, v_y);
-+    if (1u > ((uint64_t)(a_workbuf.len))) {
-+      return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length);
-     }
--    v_i = v_filter_distance;
--    while (v_i < v_n) {
--      a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + ((uint8_t)(((((uint32_t)(a_curr.ptr[(v_i - v_filter_distance)])) + ((uint32_t)(a_prev.ptr[v_i]))) / 2u)))));
--      v_i += 1u;
-+    v_filter = a_workbuf.ptr[0u];
-+    a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, 1u);
-+    if (self->private_impl.f_pass_bytes_per_row > ((uint64_t)(a_workbuf.len))) {
-+      return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length);
-+    }
-+    v_curr_row = wuffs_base__slice_u8__subslice_j(a_workbuf, self->private_impl.f_pass_bytes_per_row);
-+    a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, self->private_impl.f_pass_bytes_per_row);
-+    if (v_filter == 0u) {
-+    } else if (v_filter == 1u) {
-+      wuffs_png__decoder__filter_1(self, v_curr_row);
-+    } else if (v_filter == 2u) {
-+      wuffs_png__decoder__filter_2(self, v_curr_row, v_prev_row);
-+    } else if (v_filter == 3u) {
-+      wuffs_png__decoder__filter_3(self, v_curr_row, v_prev_row);
-+    } else if (v_filter == 4u) {
-+      wuffs_png__decoder__filter_4(self, v_curr_row, v_prev_row);
-+    } else {
-+      return wuffs_base__make_status(wuffs_png__error__bad_filter);
-     }
-+    wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, v_curr_row);
-+    v_prev_row = v_curr_row;
-+    v_y += 1u;
-   }
--  return wuffs_base__make_empty_struct();
-+  return wuffs_base__make_status(NULL);
- }
- 
--// -------- func png.decoder.filter_3_distance_3_fallback
-+// -------- func png.decoder.filter_and_swizzle_tricky
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_3_distance_3_fallback(
-+static wuffs_base__status
-+wuffs_png__decoder__filter_and_swizzle_tricky(
-     wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev) {
--  wuffs_base__slice_u8 v_curr = {0};
--  wuffs_base__slice_u8 v_prev = {0};
--  uint8_t v_fa0 = 0;
--  uint8_t v_fa1 = 0;
--  uint8_t v_fa2 = 0;
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  wuffs_base__pixel_format v_dst_pixfmt = {0};
-+  uint32_t v_dst_bits_per_pixel = 0;
-+  uint64_t v_dst_bytes_per_pixel = 0;
-+  uint64_t v_dst_bytes_per_row1 = 0;
-+  wuffs_base__slice_u8 v_dst_palette = {0};
-+  wuffs_base__table_u8 v_tab = {0};
-+  uint64_t v_src_bytes_per_pixel = 0;
-+  uint32_t v_x = 0;
-+  uint32_t v_y = 0;
-+  uint64_t v_i = 0;
-+  wuffs_base__slice_u8 v_dst = {0};
-+  uint8_t v_filter = 0;
-+  wuffs_base__slice_u8 v_s = {0};
-+  wuffs_base__slice_u8 v_curr_row = {0};
-+  wuffs_base__slice_u8 v_prev_row = {0};
-+  uint8_t v_bits_unpacked[8] = {0};
-+  uint8_t v_bits_packed = 0;
-+  uint8_t v_packs_remaining = 0;
-+  uint8_t v_multiplier = 0;
-+  uint8_t v_shift = 0;
- 
--  if (((uint64_t)(a_prev.len)) == 0u) {
--    {
--      wuffs_base__slice_u8 i_slice_curr = a_curr;
--      v_curr.ptr = i_slice_curr.ptr;
--      v_curr.len = 3;
--      uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 6) * 6);
--      while (v_curr.ptr < i_end0_curr) {
--        v_fa0 = ((uint8_t)((v_fa0 / 2u) + v_curr.ptr[0u]));
--        v_curr.ptr[0u] = v_fa0;
--        v_fa1 = ((uint8_t)((v_fa1 / 2u) + v_curr.ptr[1u]));
--        v_curr.ptr[1u] = v_fa1;
--        v_fa2 = ((uint8_t)((v_fa2 / 2u) + v_curr.ptr[2u]));
--        v_curr.ptr[2u] = v_fa2;
--        v_curr.ptr += 3;
--        v_fa0 = ((uint8_t)((v_fa0 / 2u) + v_curr.ptr[0u]));
--        v_curr.ptr[0u] = v_fa0;
--        v_fa1 = ((uint8_t)((v_fa1 / 2u) + v_curr.ptr[1u]));
--        v_curr.ptr[1u] = v_fa1;
--        v_fa2 = ((uint8_t)((v_fa2 / 2u) + v_curr.ptr[2u]));
--        v_curr.ptr[2u] = v_fa2;
--        v_curr.ptr += 3;
-+  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
-+  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
-+  if ((v_dst_bits_per_pixel & 7u) != 0u) {
-+    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+  }
-+  v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8u)));
-+  v_dst_bytes_per_row1 = (((uint64_t)(self->private_impl.f_frame_rect_x1)) * v_dst_bytes_per_pixel);
-+  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024));
-+  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
-+  v_src_bytes_per_pixel = 1u;
-+  if (self->private_impl.f_depth >= 8u) {
-+    v_src_bytes_per_pixel = (((uint64_t)(WUFFS_PNG__NUM_CHANNELS[self->private_impl.f_color_type])) * ((uint64_t)(((uint8_t)(self->private_impl.f_depth >> 3u)))));
-+  }
-+  if (self->private_impl.f_chunk_type_array[0u] == 73u) {
-+    v_y = ((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][5u]));
-+  } else {
-+    v_y = self->private_impl.f_frame_rect_y0;
-+  }
-+  while (v_y < self->private_impl.f_frame_rect_y1) {
-+    v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, v_y);
-+    if (v_dst_bytes_per_row1 < ((uint64_t)(v_dst.len))) {
-+      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row1);
-+    }
-+    if (1u > ((uint64_t)(a_workbuf.len))) {
-+      return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length);
-+    }
-+    v_filter = a_workbuf.ptr[0u];
-+    a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, 1u);
-+    if (self->private_impl.f_pass_bytes_per_row > ((uint64_t)(a_workbuf.len))) {
-+      return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length);
-+    }
-+    v_curr_row = wuffs_base__slice_u8__subslice_j(a_workbuf, self->private_impl.f_pass_bytes_per_row);
-+    a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, self->private_impl.f_pass_bytes_per_row);
-+    if (v_filter == 0u) {
-+    } else if (v_filter == 1u) {
-+      wuffs_png__decoder__filter_1(self, v_curr_row);
-+    } else if (v_filter == 2u) {
-+      wuffs_png__decoder__filter_2(self, v_curr_row, v_prev_row);
-+    } else if (v_filter == 3u) {
-+      wuffs_png__decoder__filter_3(self, v_curr_row, v_prev_row);
-+    } else if (v_filter == 4u) {
-+      wuffs_png__decoder__filter_4(self, v_curr_row, v_prev_row);
-+    } else {
-+      return wuffs_base__make_status(wuffs_png__error__bad_filter);
-+    }
-+    v_s = v_curr_row;
-+    if (self->private_impl.f_chunk_type_array[0u] == 73u) {
-+      v_x = ((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][2u]));
-+    } else {
-+      v_x = self->private_impl.f_frame_rect_x0;
-+    }
-+    if (self->private_impl.f_depth == 8u) {
-+      while (v_x < self->private_impl.f_frame_rect_x1) {
-+        v_i = (((uint64_t)(v_x)) * v_dst_bytes_per_pixel);
-+        if (v_i <= ((uint64_t)(v_dst.len))) {
-+          if (((uint32_t)(self->private_impl.f_remap_transparency)) != 0u) {
-+            if (self->private_impl.f_color_type == 0u) {
-+              if (1u <= ((uint64_t)(v_s.len))) {
-+                v_bits_unpacked[0u] = v_s.ptr[0u];
-+                v_bits_unpacked[1u] = v_s.ptr[0u];
-+                v_bits_unpacked[2u] = v_s.ptr[0u];
-+                v_bits_unpacked[3u] = 255u;
-+                v_s = wuffs_base__slice_u8__subslice_i(v_s, 1u);
-+                if (((uint32_t)(self->private_impl.f_remap_transparency)) == ((((uint32_t)(v_bits_unpacked[0u])) << 0u) |
-+                    (((uint32_t)(v_bits_unpacked[1u])) << 8u) |
-+                    (((uint32_t)(v_bits_unpacked[2u])) << 16u) |
-+                    (((uint32_t)(v_bits_unpacked[3u])) << 24u))) {
-+                  v_bits_unpacked[0u] = 0u;
-+                  v_bits_unpacked[1u] = 0u;
-+                  v_bits_unpacked[2u] = 0u;
-+                  v_bits_unpacked[3u] = 0u;
-+                }
-+                wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4));
-+              }
-+            } else {
-+              if (3u <= ((uint64_t)(v_s.len))) {
-+                v_bits_unpacked[0u] = v_s.ptr[2u];
-+                v_bits_unpacked[1u] = v_s.ptr[1u];
-+                v_bits_unpacked[2u] = v_s.ptr[0u];
-+                v_bits_unpacked[3u] = 255u;
-+                v_s = wuffs_base__slice_u8__subslice_i(v_s, 3u);
-+                if (((uint32_t)(self->private_impl.f_remap_transparency)) == ((((uint32_t)(v_bits_unpacked[0u])) << 0u) |
-+                    (((uint32_t)(v_bits_unpacked[1u])) << 8u) |
-+                    (((uint32_t)(v_bits_unpacked[2u])) << 16u) |
-+                    (((uint32_t)(v_bits_unpacked[3u])) << 24u))) {
-+                  v_bits_unpacked[0u] = 0u;
-+                  v_bits_unpacked[1u] = 0u;
-+                  v_bits_unpacked[2u] = 0u;
-+                  v_bits_unpacked[3u] = 0u;
-+                }
-+                wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4));
-+              }
-+            }
-+          } else if (v_src_bytes_per_pixel <= ((uint64_t)(v_s.len))) {
-+            wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__slice_u8__subslice_j(v_s, v_src_bytes_per_pixel));
-+            v_s = wuffs_base__slice_u8__subslice_i(v_s, v_src_bytes_per_pixel);
-+          }
-+        }
-+        v_x += (((uint32_t)(1u)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0u]);
-       }
--      v_curr.len = 3;
--      uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3);
--      while (v_curr.ptr < i_end1_curr) {
--        v_fa0 = ((uint8_t)((v_fa0 / 2u) + v_curr.ptr[0u]));
--        v_curr.ptr[0u] = v_fa0;
--        v_fa1 = ((uint8_t)((v_fa1 / 2u) + v_curr.ptr[1u]));
--        v_curr.ptr[1u] = v_fa1;
--        v_fa2 = ((uint8_t)((v_fa2 / 2u) + v_curr.ptr[2u]));
--        v_curr.ptr[2u] = v_fa2;
--        v_curr.ptr += 3;
-+    } else if (self->private_impl.f_depth < 8u) {
-+      v_multiplier = 1u;
-+      if (self->private_impl.f_color_type == 0u) {
-+        v_multiplier = WUFFS_PNG__LOW_BIT_DEPTH_MULTIPLIERS[self->private_impl.f_depth];
-       }
--      v_curr.len = 0;
--    }
--  } else {
--    {
--      wuffs_base__slice_u8 i_slice_curr = a_curr;
--      v_curr.ptr = i_slice_curr.ptr;
--      wuffs_base__slice_u8 i_slice_prev = a_prev;
--      v_prev.ptr = i_slice_prev.ptr;
--      i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
--      v_curr.len = 3;
--      v_prev.len = 3;
--      uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 6) * 6);
--      while (v_curr.ptr < i_end0_curr) {
--        v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0u]))) / 2u))) + v_curr.ptr[0u]));
--        v_curr.ptr[0u] = v_fa0;
--        v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1u]))) / 2u))) + v_curr.ptr[1u]));
--        v_curr.ptr[1u] = v_fa1;
--        v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2u]))) / 2u))) + v_curr.ptr[2u]));
--        v_curr.ptr[2u] = v_fa2;
--        v_curr.ptr += 3;
--        v_prev.ptr += 3;
--        v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0u]))) / 2u))) + v_curr.ptr[0u]));
--        v_curr.ptr[0u] = v_fa0;
--        v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1u]))) / 2u))) + v_curr.ptr[1u]));
--        v_curr.ptr[1u] = v_fa1;
--        v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2u]))) / 2u))) + v_curr.ptr[2u]));
--        v_curr.ptr[2u] = v_fa2;
--        v_curr.ptr += 3;
--        v_prev.ptr += 3;
-+      v_shift = ((uint8_t)(((uint8_t)(8u - self->private_impl.f_depth)) & 7u));
-+      v_packs_remaining = 0u;
-+      while (v_x < self->private_impl.f_frame_rect_x1) {
-+        v_i = (((uint64_t)(v_x)) * v_dst_bytes_per_pixel);
-+        if (v_i <= ((uint64_t)(v_dst.len))) {
-+          if ((v_packs_remaining == 0u) && (1u <= ((uint64_t)(v_s.len)))) {
-+            v_packs_remaining = WUFFS_PNG__LOW_BIT_DEPTH_NUM_PACKS[self->private_impl.f_depth];
-+            v_bits_packed = v_s.ptr[0u];
-+            v_s = wuffs_base__slice_u8__subslice_i(v_s, 1u);
-+          }
-+          v_bits_unpacked[0u] = ((uint8_t)(((uint8_t)(v_bits_packed >> v_shift)) * v_multiplier));
-+          v_bits_packed = ((uint8_t)(v_bits_packed << self->private_impl.f_depth));
-+          v_packs_remaining = ((uint8_t)(v_packs_remaining - 1u));
-+          if (((uint32_t)(self->private_impl.f_remap_transparency)) != 0u) {
-+            v_bits_unpacked[1u] = v_bits_unpacked[0u];
-+            v_bits_unpacked[2u] = v_bits_unpacked[0u];
-+            v_bits_unpacked[3u] = 255u;
-+            if (((uint32_t)(self->private_impl.f_remap_transparency)) == ((((uint32_t)(v_bits_unpacked[0u])) << 0u) |
-+                (((uint32_t)(v_bits_unpacked[1u])) << 8u) |
-+                (((uint32_t)(v_bits_unpacked[2u])) << 16u) |
-+                (((uint32_t)(v_bits_unpacked[3u])) << 24u))) {
-+              v_bits_unpacked[0u] = 0u;
-+              v_bits_unpacked[1u] = 0u;
-+              v_bits_unpacked[2u] = 0u;
-+              v_bits_unpacked[3u] = 0u;
-+            }
-+            wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4));
-+          } else {
-+            wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 1));
-+          }
-+        }
-+        v_x += (((uint32_t)(1u)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0u]);
-       }
--      v_curr.len = 3;
--      v_prev.len = 3;
--      uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3);
--      while (v_curr.ptr < i_end1_curr) {
--        v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0u]))) / 2u))) + v_curr.ptr[0u]));
--        v_curr.ptr[0u] = v_fa0;
--        v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1u]))) / 2u))) + v_curr.ptr[1u]));
--        v_curr.ptr[1u] = v_fa1;
--        v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2u]))) / 2u))) + v_curr.ptr[2u]));
--        v_curr.ptr[2u] = v_fa2;
--        v_curr.ptr += 3;
--        v_prev.ptr += 3;
-+    } else {
-+      while (v_x < self->private_impl.f_frame_rect_x1) {
-+        v_i = (((uint64_t)(v_x)) * v_dst_bytes_per_pixel);
-+        if (v_i <= ((uint64_t)(v_dst.len))) {
-+          if (self->private_impl.f_color_type == 0u) {
-+            if (2u <= ((uint64_t)(v_s.len))) {
-+              v_bits_unpacked[0u] = v_s.ptr[1u];
-+              v_bits_unpacked[1u] = v_s.ptr[0u];
-+              v_bits_unpacked[2u] = v_s.ptr[1u];
-+              v_bits_unpacked[3u] = v_s.ptr[0u];
-+              v_bits_unpacked[4u] = v_s.ptr[1u];
-+              v_bits_unpacked[5u] = v_s.ptr[0u];
-+              v_bits_unpacked[6u] = 255u;
-+              v_bits_unpacked[7u] = 255u;
-+              v_s = wuffs_base__slice_u8__subslice_i(v_s, 2u);
-+              if (self->private_impl.f_remap_transparency == ((((uint64_t)(v_bits_unpacked[0u])) << 0u) |
-+                  (((uint64_t)(v_bits_unpacked[1u])) << 8u) |
-+                  (((uint64_t)(v_bits_unpacked[2u])) << 16u) |
-+                  (((uint64_t)(v_bits_unpacked[3u])) << 24u) |
-+                  (((uint64_t)(v_bits_unpacked[4u])) << 32u) |
-+                  (((uint64_t)(v_bits_unpacked[5u])) << 40u) |
-+                  (((uint64_t)(v_bits_unpacked[6u])) << 48u) |
-+                  (((uint64_t)(v_bits_unpacked[7u])) << 56u))) {
-+                v_bits_unpacked[0u] = 0u;
-+                v_bits_unpacked[1u] = 0u;
-+                v_bits_unpacked[2u] = 0u;
-+                v_bits_unpacked[3u] = 0u;
-+                v_bits_unpacked[4u] = 0u;
-+                v_bits_unpacked[5u] = 0u;
-+                v_bits_unpacked[6u] = 0u;
-+                v_bits_unpacked[7u] = 0u;
-+              }
-+            }
-+          } else if (self->private_impl.f_color_type == 2u) {
-+            if (6u <= ((uint64_t)(v_s.len))) {
-+              v_bits_unpacked[0u] = v_s.ptr[5u];
-+              v_bits_unpacked[1u] = v_s.ptr[4u];
-+              v_bits_unpacked[2u] = v_s.ptr[3u];
-+              v_bits_unpacked[3u] = v_s.ptr[2u];
-+              v_bits_unpacked[4u] = v_s.ptr[1u];
-+              v_bits_unpacked[5u] = v_s.ptr[0u];
-+              v_bits_unpacked[6u] = 255u;
-+              v_bits_unpacked[7u] = 255u;
-+              v_s = wuffs_base__slice_u8__subslice_i(v_s, 6u);
-+              if (self->private_impl.f_remap_transparency == ((((uint64_t)(v_bits_unpacked[0u])) << 0u) |
-+                  (((uint64_t)(v_bits_unpacked[1u])) << 8u) |
-+                  (((uint64_t)(v_bits_unpacked[2u])) << 16u) |
-+                  (((uint64_t)(v_bits_unpacked[3u])) << 24u) |
-+                  (((uint64_t)(v_bits_unpacked[4u])) << 32u) |
-+                  (((uint64_t)(v_bits_unpacked[5u])) << 40u) |
-+                  (((uint64_t)(v_bits_unpacked[6u])) << 48u) |
-+                  (((uint64_t)(v_bits_unpacked[7u])) << 56u))) {
-+                v_bits_unpacked[0u] = 0u;
-+                v_bits_unpacked[1u] = 0u;
-+                v_bits_unpacked[2u] = 0u;
-+                v_bits_unpacked[3u] = 0u;
-+                v_bits_unpacked[4u] = 0u;
-+                v_bits_unpacked[5u] = 0u;
-+                v_bits_unpacked[6u] = 0u;
-+                v_bits_unpacked[7u] = 0u;
-+              }
-+            }
-+          } else if (self->private_impl.f_color_type == 4u) {
-+            if (4u <= ((uint64_t)(v_s.len))) {
-+              v_bits_unpacked[0u] = v_s.ptr[1u];
-+              v_bits_unpacked[1u] = v_s.ptr[0u];
-+              v_bits_unpacked[2u] = v_s.ptr[1u];
-+              v_bits_unpacked[3u] = v_s.ptr[0u];
-+              v_bits_unpacked[4u] = v_s.ptr[1u];
-+              v_bits_unpacked[5u] = v_s.ptr[0u];
-+              v_bits_unpacked[6u] = v_s.ptr[3u];
-+              v_bits_unpacked[7u] = v_s.ptr[2u];
-+              v_s = wuffs_base__slice_u8__subslice_i(v_s, 4u);
-+            }
-+          } else {
-+            if (8u <= ((uint64_t)(v_s.len))) {
-+              v_bits_unpacked[0u] = v_s.ptr[5u];
-+              v_bits_unpacked[1u] = v_s.ptr[4u];
-+              v_bits_unpacked[2u] = v_s.ptr[3u];
-+              v_bits_unpacked[3u] = v_s.ptr[2u];
-+              v_bits_unpacked[4u] = v_s.ptr[1u];
-+              v_bits_unpacked[5u] = v_s.ptr[0u];
-+              v_bits_unpacked[6u] = v_s.ptr[7u];
-+              v_bits_unpacked[7u] = v_s.ptr[6u];
-+              v_s = wuffs_base__slice_u8__subslice_i(v_s, 8u);
-+            }
-+          }
-+          wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 8));
-+        }
-+        v_x += (((uint32_t)(1u)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0u]);
-       }
--      v_curr.len = 0;
--      v_prev.len = 0;
-     }
-+    v_prev_row = v_curr_row;
-+    v_y += (((uint32_t)(1u)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][3u]);
-   }
--  return wuffs_base__make_empty_struct();
-+  return wuffs_base__make_status(NULL);
- }
- 
--// -------- func png.decoder.filter_3_distance_4_fallback
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG)
-+
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__QOI)
-+
-+// ---------------- Status Codes Implementations
-+
-+const char wuffs_qoi__error__bad_footer[] = "#qoi: bad footer";
-+const char wuffs_qoi__error__bad_header[] = "#qoi: bad header";
-+const char wuffs_qoi__error__truncated_input[] = "#qoi: truncated input";
-+
-+// ---------------- Private Consts
-+
-+// ---------------- Private Initializer Prototypes
-+
-+// ---------------- Private Function Prototypes
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_3_distance_4_fallback(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev) {
--  wuffs_base__slice_u8 v_curr = {0};
--  wuffs_base__slice_u8 v_prev = {0};
--  uint8_t v_fa0 = 0;
--  uint8_t v_fa1 = 0;
--  uint8_t v_fa2 = 0;
--  uint8_t v_fa3 = 0;
-+static wuffs_base__status
-+wuffs_qoi__decoder__do_decode_image_config(
-+    wuffs_qoi__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_qoi__decoder__do_decode_frame_config(
-+    wuffs_qoi__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_qoi__decoder__do_decode_frame(
-+    wuffs_qoi__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_qoi__decoder__from_src_to_buffer(
-+    wuffs_qoi__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_qoi__decoder__from_buffer_to_dst(
-+    wuffs_qoi__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst);
-+
-+// ---------------- VTables
-+
-+const wuffs_base__image_decoder__func_ptrs
-+wuffs_qoi__decoder__func_ptrs_for__wuffs_base__image_decoder = {
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__pixel_buffer*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__pixel_blend,
-+      wuffs_base__slice_u8,
-+      wuffs_base__decode_frame_options*))(&wuffs_qoi__decoder__decode_frame),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__frame_config*,
-+      wuffs_base__io_buffer*))(&wuffs_qoi__decoder__decode_frame_config),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__image_config*,
-+      wuffs_base__io_buffer*))(&wuffs_qoi__decoder__decode_image_config),
-+  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_qoi__decoder__frame_dirty_rect),
-+  (uint64_t(*)(const void*,
-+      uint32_t))(&wuffs_qoi__decoder__get_quirk),
-+  (uint32_t(*)(const void*))(&wuffs_qoi__decoder__num_animation_loops),
-+  (uint64_t(*)(const void*))(&wuffs_qoi__decoder__num_decoded_frame_configs),
-+  (uint64_t(*)(const void*))(&wuffs_qoi__decoder__num_decoded_frames),
-+  (wuffs_base__status(*)(void*,
-+      uint64_t,
-+      uint64_t))(&wuffs_qoi__decoder__restart_frame),
-+  (wuffs_base__status(*)(void*,
-+      uint32_t,
-+      uint64_t))(&wuffs_qoi__decoder__set_quirk),
-+  (wuffs_base__empty_struct(*)(void*,
-+      uint32_t,
-+      bool))(&wuffs_qoi__decoder__set_report_metadata),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__more_information*,
-+      wuffs_base__io_buffer*))(&wuffs_qoi__decoder__tell_me_more),
-+  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_qoi__decoder__workbuf_len),
-+};
-+
-+// ---------------- Initializer Implementations
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_qoi__decoder__initialize(
-+    wuffs_qoi__decoder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options){
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (sizeof(*self) != sizeof_star_self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  }
-+  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
-+      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+  }
- 
--  if (((uint64_t)(a_prev.len)) == 0u) {
--    {
--      wuffs_base__slice_u8 i_slice_curr = a_curr;
--      v_curr.ptr = i_slice_curr.ptr;
--      v_curr.len = 4;
--      uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
--      while (v_curr.ptr < i_end0_curr) {
--        v_fa0 = ((uint8_t)((v_fa0 / 2u) + v_curr.ptr[0u]));
--        v_curr.ptr[0u] = v_fa0;
--        v_fa1 = ((uint8_t)((v_fa1 / 2u) + v_curr.ptr[1u]));
--        v_curr.ptr[1u] = v_fa1;
--        v_fa2 = ((uint8_t)((v_fa2 / 2u) + v_curr.ptr[2u]));
--        v_curr.ptr[2u] = v_fa2;
--        v_fa3 = ((uint8_t)((v_fa3 / 2u) + v_curr.ptr[3u]));
--        v_curr.ptr[3u] = v_fa3;
--        v_curr.ptr += 4;
--      }
--      v_curr.len = 0;
-+  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
-+    // The whole point of this if-check is to detect an uninitialized *self.
-+    // We disable the warning on GCC. Clang-5.0 does not have this warning.
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+#endif
-+    if (self->private_impl.magic != 0) {
-+      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-     }
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-   } else {
--    {
--      wuffs_base__slice_u8 i_slice_curr = a_curr;
--      v_curr.ptr = i_slice_curr.ptr;
--      wuffs_base__slice_u8 i_slice_prev = a_prev;
--      v_prev.ptr = i_slice_prev.ptr;
--      i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
--      v_curr.len = 4;
--      v_prev.len = 4;
--      uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
--      while (v_curr.ptr < i_end0_curr) {
--        v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0u]))) / 2u))) + v_curr.ptr[0u]));
--        v_curr.ptr[0u] = v_fa0;
--        v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1u]))) / 2u))) + v_curr.ptr[1u]));
--        v_curr.ptr[1u] = v_fa1;
--        v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2u]))) / 2u))) + v_curr.ptr[2u]));
--        v_curr.ptr[2u] = v_fa2;
--        v_fa3 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa3)) + ((uint32_t)(v_prev.ptr[3u]))) / 2u))) + v_curr.ptr[3u]));
--        v_curr.ptr[3u] = v_fa3;
--        v_curr.ptr += 4;
--        v_prev.ptr += 4;
--      }
--      v_curr.len = 0;
--      v_prev.len = 0;
-+    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
-+      memset(self, 0, sizeof(*self));
-+      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-+    } else {
-+      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-     }
-   }
--  return wuffs_base__make_empty_struct();
-+
-+  self->private_impl.magic = WUFFS_BASE__MAGIC;
-+  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
-+      wuffs_base__image_decoder__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
-+      (const void*)(&wuffs_qoi__decoder__func_ptrs_for__wuffs_base__image_decoder);
-+  return wuffs_base__make_status(NULL);
- }
- 
--// -------- func png.decoder.filter_4
-+wuffs_qoi__decoder*
-+wuffs_qoi__decoder__alloc(void) {
-+  wuffs_qoi__decoder* x =
-+      (wuffs_qoi__decoder*)(calloc(1, sizeof(wuffs_qoi__decoder)));
-+  if (!x) {
-+    return NULL;
-+  }
-+  if (wuffs_qoi__decoder__initialize(
-+      x, sizeof(wuffs_qoi__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+    free(x);
-+    return NULL;
-+  }
-+  return x;
-+}
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_4(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev) {
--  return (*self->private_impl.choosy_filter_4)(self, a_curr, a_prev);
-+size_t
-+sizeof__wuffs_qoi__decoder(void) {
-+  return sizeof(wuffs_qoi__decoder);
- }
- 
-+// ---------------- Function Implementations
-+
-+// -------- func qoi.decoder.get_quirk
-+
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_4__choosy_default(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev) {
--  uint64_t v_filter_distance = 0;
--  uint64_t v_n = 0;
--  uint64_t v_i = 0;
--  uint32_t v_fa = 0;
--  uint32_t v_fb = 0;
--  uint32_t v_fc = 0;
--  uint32_t v_pp = 0;
--  uint32_t v_pa = 0;
--  uint32_t v_pb = 0;
--  uint32_t v_pc = 0;
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_qoi__decoder__get_quirk(
-+    const wuffs_qoi__decoder* self,
-+    uint32_t a_key) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
- 
--  v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance));
--  v_n = wuffs_base__u64__min(((uint64_t)(a_curr.len)), ((uint64_t)(a_prev.len)));
--  v_i = 0u;
--  while ((v_i < v_n) && (v_i < v_filter_distance)) {
--    a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + a_prev.ptr[v_i]));
--    v_i += 1u;
-+  return 0u;
-+}
-+
-+// -------- func qoi.decoder.set_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_qoi__decoder__set_quirk(
-+    wuffs_qoi__decoder* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
--  v_i = v_filter_distance;
--  while (v_i < v_n) {
--    v_fa = ((uint32_t)(a_curr.ptr[(v_i - v_filter_distance)]));
--    v_fb = ((uint32_t)(a_prev.ptr[v_i]));
--    v_fc = ((uint32_t)(a_prev.ptr[(v_i - v_filter_distance)]));
--    v_pp = ((uint32_t)(((uint32_t)(v_fa + v_fb)) - v_fc));
--    v_pa = ((uint32_t)(v_pp - v_fa));
--    if (v_pa >= 2147483648u) {
--      v_pa = ((uint32_t)(0u - v_pa));
--    }
--    v_pb = ((uint32_t)(v_pp - v_fb));
--    if (v_pb >= 2147483648u) {
--      v_pb = ((uint32_t)(0u - v_pb));
--    }
--    v_pc = ((uint32_t)(v_pp - v_fc));
--    if (v_pc >= 2147483648u) {
--      v_pc = ((uint32_t)(0u - v_pc));
--    }
--    if ((v_pa <= v_pb) && (v_pa <= v_pc)) {
--    } else if (v_pb <= v_pc) {
--      v_fa = v_fb;
--    } else {
--      v_fa = v_fc;
--    }
--    a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + ((uint8_t)(v_fa))));
--    v_i += 1u;
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-   }
--  return wuffs_base__make_empty_struct();
-+
-+  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
- }
- 
--// -------- func png.decoder.filter_4_distance_3_fallback
-+// -------- func qoi.decoder.decode_image_config
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_4_distance_3_fallback(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev) {
--  wuffs_base__slice_u8 v_curr = {0};
--  wuffs_base__slice_u8 v_prev = {0};
--  uint32_t v_fa0 = 0;
--  uint32_t v_fa1 = 0;
--  uint32_t v_fa2 = 0;
--  uint32_t v_fb0 = 0;
--  uint32_t v_fb1 = 0;
--  uint32_t v_fb2 = 0;
--  uint32_t v_fc0 = 0;
--  uint32_t v_fc1 = 0;
--  uint32_t v_fc2 = 0;
--  uint32_t v_pp0 = 0;
--  uint32_t v_pp1 = 0;
--  uint32_t v_pp2 = 0;
--  uint32_t v_pa0 = 0;
--  uint32_t v_pa1 = 0;
--  uint32_t v_pa2 = 0;
--  uint32_t v_pb0 = 0;
--  uint32_t v_pb1 = 0;
--  uint32_t v_pb2 = 0;
--  uint32_t v_pc0 = 0;
--  uint32_t v_pc1 = 0;
--  uint32_t v_pc2 = 0;
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_qoi__decoder__decode_image_config(
-+    wuffs_qoi__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 1)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  {
--    wuffs_base__slice_u8 i_slice_curr = a_curr;
--    v_curr.ptr = i_slice_curr.ptr;
--    wuffs_base__slice_u8 i_slice_prev = a_prev;
--    v_prev.ptr = i_slice_prev.ptr;
--    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
--    v_curr.len = 3;
--    v_prev.len = 3;
--    uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3);
--    while (v_curr.ptr < i_end0_curr) {
--      v_fb0 = ((uint32_t)(v_prev.ptr[0u]));
--      v_pp0 = ((uint32_t)(((uint32_t)(v_fa0 + v_fb0)) - v_fc0));
--      v_pa0 = ((uint32_t)(v_pp0 - v_fa0));
--      if (v_pa0 >= 2147483648u) {
--        v_pa0 = ((uint32_t)(0u - v_pa0));
--      }
--      v_pb0 = ((uint32_t)(v_pp0 - v_fb0));
--      if (v_pb0 >= 2147483648u) {
--        v_pb0 = ((uint32_t)(0u - v_pb0));
--      }
--      v_pc0 = ((uint32_t)(v_pp0 - v_fc0));
--      if (v_pc0 >= 2147483648u) {
--        v_pc0 = ((uint32_t)(0u - v_pc0));
--      }
--      if ((v_pa0 <= v_pb0) && (v_pa0 <= v_pc0)) {
--      } else if (v_pb0 <= v_pc0) {
--        v_fa0 = v_fb0;
--      } else {
--        v_fa0 = v_fc0;
--      }
--      v_curr.ptr[0u] = ((uint8_t)(v_curr.ptr[0u] + ((uint8_t)(v_fa0))));
--      v_fa0 = ((uint32_t)(v_curr.ptr[0u]));
--      v_fc0 = v_fb0;
--      v_fb1 = ((uint32_t)(v_prev.ptr[1u]));
--      v_pp1 = ((uint32_t)(((uint32_t)(v_fa1 + v_fb1)) - v_fc1));
--      v_pa1 = ((uint32_t)(v_pp1 - v_fa1));
--      if (v_pa1 >= 2147483648u) {
--        v_pa1 = ((uint32_t)(0u - v_pa1));
--      }
--      v_pb1 = ((uint32_t)(v_pp1 - v_fb1));
--      if (v_pb1 >= 2147483648u) {
--        v_pb1 = ((uint32_t)(0u - v_pb1));
--      }
--      v_pc1 = ((uint32_t)(v_pp1 - v_fc1));
--      if (v_pc1 >= 2147483648u) {
--        v_pc1 = ((uint32_t)(0u - v_pc1));
--      }
--      if ((v_pa1 <= v_pb1) && (v_pa1 <= v_pc1)) {
--      } else if (v_pb1 <= v_pc1) {
--        v_fa1 = v_fb1;
--      } else {
--        v_fa1 = v_fc1;
--      }
--      v_curr.ptr[1u] = ((uint8_t)(v_curr.ptr[1u] + ((uint8_t)(v_fa1))));
--      v_fa1 = ((uint32_t)(v_curr.ptr[1u]));
--      v_fc1 = v_fb1;
--      v_fb2 = ((uint32_t)(v_prev.ptr[2u]));
--      v_pp2 = ((uint32_t)(((uint32_t)(v_fa2 + v_fb2)) - v_fc2));
--      v_pa2 = ((uint32_t)(v_pp2 - v_fa2));
--      if (v_pa2 >= 2147483648u) {
--        v_pa2 = ((uint32_t)(0u - v_pa2));
--      }
--      v_pb2 = ((uint32_t)(v_pp2 - v_fb2));
--      if (v_pb2 >= 2147483648u) {
--        v_pb2 = ((uint32_t)(0u - v_pb2));
--      }
--      v_pc2 = ((uint32_t)(v_pp2 - v_fc2));
--      if (v_pc2 >= 2147483648u) {
--        v_pc2 = ((uint32_t)(0u - v_pc2));
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_image_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_qoi__decoder__do_decode_image_config(self, a_dst, a_src);
-+        v_status = t_0;
-       }
--      if ((v_pa2 <= v_pb2) && (v_pa2 <= v_pc2)) {
--      } else if (v_pb2 <= v_pc2) {
--        v_fa2 = v_fb2;
--      } else {
--        v_fa2 = v_fc2;
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_qoi__error__truncated_input);
-+        goto exit;
-       }
--      v_curr.ptr[2u] = ((uint8_t)(v_curr.ptr[2u] + ((uint8_t)(v_fa2))));
--      v_fa2 = ((uint32_t)(v_curr.ptr[2u]));
--      v_fc2 = v_fb2;
--      v_curr.ptr += 3;
--      v_prev.ptr += 3;
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-     }
--    v_curr.len = 0;
--    v_prev.len = 0;
-+
-+    ok:
-+    self->private_impl.p_decode_image_config = 0;
-+    goto exit;
-   }
--  return wuffs_base__make_empty_struct();
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
- }
- 
--// -------- func png.decoder.filter_4_distance_4_fallback
-+// -------- func qoi.decoder.do_decode_image_config
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_4_distance_4_fallback(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev) {
--  wuffs_base__slice_u8 v_curr = {0};
--  wuffs_base__slice_u8 v_prev = {0};
--  uint32_t v_fa0 = 0;
--  uint32_t v_fa1 = 0;
--  uint32_t v_fa2 = 0;
--  uint32_t v_fa3 = 0;
--  uint32_t v_fb0 = 0;
--  uint32_t v_fb1 = 0;
--  uint32_t v_fb2 = 0;
--  uint32_t v_fb3 = 0;
--  uint32_t v_fc0 = 0;
--  uint32_t v_fc1 = 0;
--  uint32_t v_fc2 = 0;
--  uint32_t v_fc3 = 0;
--  uint32_t v_pp0 = 0;
--  uint32_t v_pp1 = 0;
--  uint32_t v_pp2 = 0;
--  uint32_t v_pp3 = 0;
--  uint32_t v_pa0 = 0;
--  uint32_t v_pa1 = 0;
--  uint32_t v_pa2 = 0;
--  uint32_t v_pa3 = 0;
--  uint32_t v_pb0 = 0;
--  uint32_t v_pb1 = 0;
--  uint32_t v_pb2 = 0;
--  uint32_t v_pb3 = 0;
--  uint32_t v_pc0 = 0;
--  uint32_t v_pc1 = 0;
--  uint32_t v_pc2 = 0;
--  uint32_t v_pc3 = 0;
-+static wuffs_base__status
-+wuffs_qoi__decoder__do_decode_image_config(
-+    wuffs_qoi__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  {
--    wuffs_base__slice_u8 i_slice_curr = a_curr;
--    v_curr.ptr = i_slice_curr.ptr;
--    wuffs_base__slice_u8 i_slice_prev = a_prev;
--    v_prev.ptr = i_slice_prev.ptr;
--    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
--    v_curr.len = 4;
--    v_prev.len = 4;
--    uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
--    while (v_curr.ptr < i_end0_curr) {
--      v_fb0 = ((uint32_t)(v_prev.ptr[0u]));
--      v_pp0 = ((uint32_t)(((uint32_t)(v_fa0 + v_fb0)) - v_fc0));
--      v_pa0 = ((uint32_t)(v_pp0 - v_fa0));
--      if (v_pa0 >= 2147483648u) {
--        v_pa0 = ((uint32_t)(0u - v_pa0));
--      }
--      v_pb0 = ((uint32_t)(v_pp0 - v_fb0));
--      if (v_pb0 >= 2147483648u) {
--        v_pb0 = ((uint32_t)(0u - v_pb0));
--      }
--      v_pc0 = ((uint32_t)(v_pp0 - v_fc0));
--      if (v_pc0 >= 2147483648u) {
--        v_pc0 = ((uint32_t)(0u - v_pc0));
--      }
--      if ((v_pa0 <= v_pb0) && (v_pa0 <= v_pc0)) {
--      } else if (v_pb0 <= v_pc0) {
--        v_fa0 = v_fb0;
--      } else {
--        v_fa0 = v_fc0;
--      }
--      v_curr.ptr[0u] = ((uint8_t)(v_curr.ptr[0u] + ((uint8_t)(v_fa0))));
--      v_fa0 = ((uint32_t)(v_curr.ptr[0u]));
--      v_fc0 = v_fb0;
--      v_fb1 = ((uint32_t)(v_prev.ptr[1u]));
--      v_pp1 = ((uint32_t)(((uint32_t)(v_fa1 + v_fb1)) - v_fc1));
--      v_pa1 = ((uint32_t)(v_pp1 - v_fa1));
--      if (v_pa1 >= 2147483648u) {
--        v_pa1 = ((uint32_t)(0u - v_pa1));
--      }
--      v_pb1 = ((uint32_t)(v_pp1 - v_fb1));
--      if (v_pb1 >= 2147483648u) {
--        v_pb1 = ((uint32_t)(0u - v_pb1));
--      }
--      v_pc1 = ((uint32_t)(v_pp1 - v_fc1));
--      if (v_pc1 >= 2147483648u) {
--        v_pc1 = ((uint32_t)(0u - v_pc1));
--      }
--      if ((v_pa1 <= v_pb1) && (v_pa1 <= v_pc1)) {
--      } else if (v_pb1 <= v_pc1) {
--        v_fa1 = v_fb1;
-+  uint32_t v_a = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_call_sequence != 0u) {
-+      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+      goto exit;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      uint32_t t_0;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-       } else {
--        v_fa1 = v_fc1;
--      }
--      v_curr.ptr[1u] = ((uint8_t)(v_curr.ptr[1u] + ((uint8_t)(v_fa1))));
--      v_fa1 = ((uint32_t)(v_curr.ptr[1u]));
--      v_fc1 = v_fb1;
--      v_fb2 = ((uint32_t)(v_prev.ptr[2u]));
--      v_pp2 = ((uint32_t)(((uint32_t)(v_fa2 + v_fb2)) - v_fc2));
--      v_pa2 = ((uint32_t)(v_pp2 - v_fa2));
--      if (v_pa2 >= 2147483648u) {
--        v_pa2 = ((uint32_t)(0u - v_pa2));
--      }
--      v_pb2 = ((uint32_t)(v_pp2 - v_fb2));
--      if (v_pb2 >= 2147483648u) {
--        v_pb2 = ((uint32_t)(0u - v_pb2));
--      }
--      v_pc2 = ((uint32_t)(v_pp2 - v_fc2));
--      if (v_pc2 >= 2147483648u) {
--        v_pc2 = ((uint32_t)(0u - v_pc2));
-+        self->private_data.s_do_decode_image_config.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
-+          *scratch <<= 8;
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
-+          if (num_bits_0 == 24) {
-+            t_0 = ((uint32_t)(*scratch));
-+            break;
-+          }
-+          num_bits_0 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_0)) << 56;
-+        }
-       }
--      if ((v_pa2 <= v_pb2) && (v_pa2 <= v_pc2)) {
--      } else if (v_pb2 <= v_pc2) {
--        v_fa2 = v_fb2;
-+      v_a = t_0;
-+    }
-+    if (v_a != 1718185841u) {
-+      status = wuffs_base__make_status(wuffs_qoi__error__bad_header);
-+      goto exit;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+      uint32_t t_1;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-       } else {
--        v_fa2 = v_fc2;
--      }
--      v_curr.ptr[2u] = ((uint8_t)(v_curr.ptr[2u] + ((uint8_t)(v_fa2))));
--      v_fa2 = ((uint32_t)(v_curr.ptr[2u]));
--      v_fc2 = v_fb2;
--      v_fb3 = ((uint32_t)(v_prev.ptr[3u]));
--      v_pp3 = ((uint32_t)(((uint32_t)(v_fa3 + v_fb3)) - v_fc3));
--      v_pa3 = ((uint32_t)(v_pp3 - v_fa3));
--      if (v_pa3 >= 2147483648u) {
--        v_pa3 = ((uint32_t)(0u - v_pa3));
--      }
--      v_pb3 = ((uint32_t)(v_pp3 - v_fb3));
--      if (v_pb3 >= 2147483648u) {
--        v_pb3 = ((uint32_t)(0u - v_pb3));
--      }
--      v_pc3 = ((uint32_t)(v_pp3 - v_fc3));
--      if (v_pc3 >= 2147483648u) {
--        v_pc3 = ((uint32_t)(0u - v_pc3));
-+        self->private_data.s_do_decode_image_config.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+          uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
-+          *scratch >>= 8;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
-+          if (num_bits_1 == 24) {
-+            t_1 = ((uint32_t)(*scratch >> 32));
-+            break;
-+          }
-+          num_bits_1 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_1));
-+        }
-       }
--      if ((v_pa3 <= v_pb3) && (v_pa3 <= v_pc3)) {
--      } else if (v_pb3 <= v_pc3) {
--        v_fa3 = v_fb3;
-+      v_a = t_1;
-+    }
-+    if (v_a > 16777215u) {
-+      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
-+      goto exit;
-+    }
-+    self->private_impl.f_width = v_a;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+      uint32_t t_2;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_2 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-       } else {
--        v_fa3 = v_fc3;
-+        self->private_data.s_do_decode_image_config.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+          uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu));
-+          *scratch >>= 8;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
-+          if (num_bits_2 == 24) {
-+            t_2 = ((uint32_t)(*scratch >> 32));
-+            break;
-+          }
-+          num_bits_2 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_2));
-+        }
-       }
--      v_curr.ptr[3u] = ((uint8_t)(v_curr.ptr[3u] + ((uint8_t)(v_fa3))));
--      v_fa3 = ((uint32_t)(v_curr.ptr[3u]));
--      v_fc3 = v_fb3;
--      v_curr.ptr += 4;
--      v_prev.ptr += 4;
-+      v_a = t_2;
-     }
--    v_curr.len = 0;
--    v_prev.len = 0;
--  }
--  return wuffs_base__make_empty_struct();
--}
-+    if (v_a > 16777215u) {
-+      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
-+      goto exit;
-+    }
-+    self->private_impl.f_height = v_a;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint32_t t_3 = *iop_a_src++;
-+      v_a = t_3;
-+    }
-+    if (v_a == 3u) {
-+      self->private_impl.f_pixfmt = 2415954056u;
-+    } else if (v_a == 4u) {
-+      self->private_impl.f_pixfmt = 2164295816u;
-+    } else {
-+      status = wuffs_base__make_status(wuffs_qoi__error__bad_header);
-+      goto exit;
-+    }
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+    if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+      goto suspend;
-+    }
-+    iop_a_src++;
-+    if (a_dst != NULL) {
-+      wuffs_base__image_config__set(
-+          a_dst,
-+          self->private_impl.f_pixfmt,
-+          0u,
-+          self->private_impl.f_width,
-+          self->private_impl.f_height,
-+          14u,
-+          (self->private_impl.f_pixfmt == 2415954056u));
-+    }
-+    self->private_impl.f_call_sequence = 32u;
- 
--// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
--// -------- func png.decoder.filter_1_distance_4_x86_sse42
-+    goto ok;
-+    ok:
-+    self->private_impl.p_do_decode_image_config = 0;
-+    goto exit;
-+  }
- 
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_1_distance_4_x86_sse42(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr) {
--  wuffs_base__slice_u8 v_curr = {0};
--  __m128i v_x128 = {0};
--  __m128i v_a128 = {0};
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
--  {
--    wuffs_base__slice_u8 i_slice_curr = a_curr;
--    v_curr.ptr = i_slice_curr.ptr;
--    v_curr.len = 4;
--    uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
--    while (v_curr.ptr < i_end0_curr) {
--      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--      v_x128 = _mm_add_epi8(v_x128, v_a128);
--      v_a128 = v_x128;
--      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
--      v_curr.ptr += 4;
--      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--      v_x128 = _mm_add_epi8(v_x128, v_a128);
--      v_a128 = v_x128;
--      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
--      v_curr.ptr += 4;
--    }
--    v_curr.len = 4;
--    uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
--    while (v_curr.ptr < i_end1_curr) {
--      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--      v_x128 = _mm_add_epi8(v_x128, v_a128);
--      v_a128 = v_x128;
--      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
--      v_curr.ptr += 4;
--    }
--    v_curr.len = 0;
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
--  return wuffs_base__make_empty_struct();
-+
-+  return status;
- }
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
- 
--// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
--// -------- func png.decoder.filter_3_distance_4_x86_sse42
-+// -------- func qoi.decoder.decode_frame_config
- 
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_3_distance_4_x86_sse42(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev) {
--  wuffs_base__slice_u8 v_curr = {0};
--  wuffs_base__slice_u8 v_prev = {0};
--  __m128i v_x128 = {0};
--  __m128i v_a128 = {0};
--  __m128i v_b128 = {0};
--  __m128i v_p128 = {0};
--  __m128i v_k128 = {0};
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_qoi__decoder__decode_frame_config(
-+    wuffs_qoi__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 2)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  if (((uint64_t)(a_prev.len)) == 0u) {
--    v_k128 = _mm_set1_epi8((int8_t)(254u));
--    {
--      wuffs_base__slice_u8 i_slice_curr = a_curr;
--      v_curr.ptr = i_slice_curr.ptr;
--      v_curr.len = 4;
--      uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
--      while (v_curr.ptr < i_end0_curr) {
--        v_p128 = _mm_avg_epu8(_mm_and_si128(v_a128, v_k128), v_b128);
--        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--        v_x128 = _mm_add_epi8(v_x128, v_p128);
--        v_a128 = v_x128;
--        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
--        v_curr.ptr += 4;
--        v_p128 = _mm_avg_epu8(_mm_and_si128(v_a128, v_k128), v_b128);
--        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--        v_x128 = _mm_add_epi8(v_x128, v_p128);
--        v_a128 = v_x128;
--        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
--        v_curr.ptr += 4;
--      }
--      v_curr.len = 4;
--      uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
--      while (v_curr.ptr < i_end1_curr) {
--        v_p128 = _mm_avg_epu8(_mm_and_si128(v_a128, v_k128), v_b128);
--        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--        v_x128 = _mm_add_epi8(v_x128, v_p128);
--        v_a128 = v_x128;
--        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
--        v_curr.ptr += 4;
--      }
--      v_curr.len = 0;
--    }
--  } else {
--    v_k128 = _mm_set1_epi8((int8_t)(1u));
--    {
--      wuffs_base__slice_u8 i_slice_curr = a_curr;
--      v_curr.ptr = i_slice_curr.ptr;
--      wuffs_base__slice_u8 i_slice_prev = a_prev;
--      v_prev.ptr = i_slice_prev.ptr;
--      i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
--      v_curr.len = 4;
--      v_prev.len = 4;
--      uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
--      while (v_curr.ptr < i_end0_curr) {
--        v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
--        v_p128 = _mm_avg_epu8(v_a128, v_b128);
--        v_p128 = _mm_sub_epi8(v_p128, _mm_and_si128(v_k128, _mm_xor_si128(v_a128, v_b128)));
--        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--        v_x128 = _mm_add_epi8(v_x128, v_p128);
--        v_a128 = v_x128;
--        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
--        v_curr.ptr += 4;
--        v_prev.ptr += 4;
--        v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
--        v_p128 = _mm_avg_epu8(v_a128, v_b128);
--        v_p128 = _mm_sub_epi8(v_p128, _mm_and_si128(v_k128, _mm_xor_si128(v_a128, v_b128)));
--        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--        v_x128 = _mm_add_epi8(v_x128, v_p128);
--        v_a128 = v_x128;
--        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
--        v_curr.ptr += 4;
--        v_prev.ptr += 4;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_qoi__decoder__do_decode_frame_config(self, a_dst, a_src);
-+        v_status = t_0;
-       }
--      v_curr.len = 4;
--      v_prev.len = 4;
--      uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
--      while (v_curr.ptr < i_end1_curr) {
--        v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
--        v_p128 = _mm_avg_epu8(v_a128, v_b128);
--        v_p128 = _mm_sub_epi8(v_p128, _mm_and_si128(v_k128, _mm_xor_si128(v_a128, v_b128)));
--        v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--        v_x128 = _mm_add_epi8(v_x128, v_p128);
--        v_a128 = v_x128;
--        wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
--        v_curr.ptr += 4;
--        v_prev.ptr += 4;
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_qoi__error__truncated_input);
-+        goto exit;
-       }
--      v_curr.len = 0;
--      v_prev.len = 0;
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-     }
--  }
--  return wuffs_base__make_empty_struct();
--}
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
- 
--// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
--// -------- func png.decoder.filter_4_distance_3_x86_sse42
-+    ok:
-+    self->private_impl.p_decode_frame_config = 0;
-+    goto exit;
-+  }
- 
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_4_distance_3_x86_sse42(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev) {
--  wuffs_base__slice_u8 v_curr = {0};
--  wuffs_base__slice_u8 v_prev = {0};
--  __m128i v_x128 = {0};
--  __m128i v_a128 = {0};
--  __m128i v_b128 = {0};
--  __m128i v_c128 = {0};
--  __m128i v_p128 = {0};
--  __m128i v_pa128 = {0};
--  __m128i v_pb128 = {0};
--  __m128i v_pc128 = {0};
--  __m128i v_smallest128 = {0};
--  __m128i v_z128 = {0};
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
- 
--  {
--    wuffs_base__slice_u8 i_slice_curr = a_curr;
--    v_curr.ptr = i_slice_curr.ptr;
--    wuffs_base__slice_u8 i_slice_prev = a_prev;
--    v_prev.ptr = i_slice_prev.ptr;
--    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
--    v_curr.len = 4;
--    v_prev.len = 4;
--    uint8_t* i_end0_curr = v_curr.ptr + wuffs_base__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 7, 6);
--    while (v_curr.ptr < i_end0_curr) {
--      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
--      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
--      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
--      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
--      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
--      v_pa128 = _mm_abs_epi16(v_pa128);
--      v_pb128 = _mm_abs_epi16(v_pb128);
--      v_pc128 = _mm_abs_epi16(v_pc128);
--      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
--      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
--      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
--      v_x128 = _mm_add_epi8(v_x128, v_p128);
--      v_a128 = v_x128;
--      v_c128 = v_b128;
--      v_x128 = _mm_packus_epi16(v_x128, v_x128);
--      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
--      v_curr.ptr += 3;
--      v_prev.ptr += 3;
--      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
--      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
--      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
--      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
--      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
--      v_pa128 = _mm_abs_epi16(v_pa128);
--      v_pb128 = _mm_abs_epi16(v_pb128);
--      v_pc128 = _mm_abs_epi16(v_pc128);
--      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
--      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
--      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
--      v_x128 = _mm_add_epi8(v_x128, v_p128);
--      v_a128 = v_x128;
--      v_c128 = v_b128;
--      v_x128 = _mm_packus_epi16(v_x128, v_x128);
--      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
--      v_curr.ptr += 3;
--      v_prev.ptr += 3;
--    }
--    v_curr.len = 4;
--    v_prev.len = 4;
--    uint8_t* i_end1_curr = v_curr.ptr + wuffs_base__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 4, 3);
--    while (v_curr.ptr < i_end1_curr) {
--      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
--      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
--      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
--      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
--      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
--      v_pa128 = _mm_abs_epi16(v_pa128);
--      v_pb128 = _mm_abs_epi16(v_pb128);
--      v_pc128 = _mm_abs_epi16(v_pc128);
--      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
--      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
--      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
--      v_x128 = _mm_add_epi8(v_x128, v_p128);
--      v_a128 = v_x128;
--      v_c128 = v_b128;
--      v_x128 = _mm_packus_epi16(v_x128, v_x128);
--      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
--      v_curr.ptr += 3;
--      v_prev.ptr += 3;
--    }
--    v_curr.len = 3;
--    v_prev.len = 3;
--    uint8_t* i_end2_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3);
--    while (v_curr.ptr < i_end2_curr) {
--      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u24le__no_bounds_check(v_prev.ptr)));
--      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
--      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
--      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
--      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
--      v_pa128 = _mm_abs_epi16(v_pa128);
--      v_pb128 = _mm_abs_epi16(v_pb128);
--      v_pc128 = _mm_abs_epi16(v_pc128);
--      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
--      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
--      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u24le__no_bounds_check(v_curr.ptr)));
--      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
--      v_x128 = _mm_add_epi8(v_x128, v_p128);
--      v_x128 = _mm_packus_epi16(v_x128, v_x128);
--      wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
--      v_curr.ptr += 3;
--      v_prev.ptr += 3;
--    }
--    v_curr.len = 0;
--    v_prev.len = 0;
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-   }
--  return wuffs_base__make_empty_struct();
-+  return status;
- }
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
- 
--// ‼ WUFFS MULTI-FILE SECTION +x86_sse42
--// -------- func png.decoder.filter_4_distance_4_x86_sse42
-+// -------- func qoi.decoder.do_decode_frame_config
- 
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_png__decoder__filter_4_distance_4_x86_sse42(
--    wuffs_png__decoder* self,
--    wuffs_base__slice_u8 a_curr,
--    wuffs_base__slice_u8 a_prev) {
--  wuffs_base__slice_u8 v_curr = {0};
--  wuffs_base__slice_u8 v_prev = {0};
--  __m128i v_x128 = {0};
--  __m128i v_a128 = {0};
--  __m128i v_b128 = {0};
--  __m128i v_c128 = {0};
--  __m128i v_p128 = {0};
--  __m128i v_pa128 = {0};
--  __m128i v_pb128 = {0};
--  __m128i v_pc128 = {0};
--  __m128i v_smallest128 = {0};
--  __m128i v_z128 = {0};
-+static wuffs_base__status
-+wuffs_qoi__decoder__do_decode_frame_config(
-+    wuffs_qoi__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  {
--    wuffs_base__slice_u8 i_slice_curr = a_curr;
--    v_curr.ptr = i_slice_curr.ptr;
--    wuffs_base__slice_u8 i_slice_prev = a_prev;
--    v_prev.ptr = i_slice_prev.ptr;
--    i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
--    v_curr.len = 4;
--    v_prev.len = 4;
--    uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
--    while (v_curr.ptr < i_end0_curr) {
--      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
--      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
--      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
--      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
--      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
--      v_pa128 = _mm_abs_epi16(v_pa128);
--      v_pb128 = _mm_abs_epi16(v_pb128);
--      v_pc128 = _mm_abs_epi16(v_pc128);
--      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
--      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
--      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
--      v_x128 = _mm_add_epi8(v_x128, v_p128);
--      v_a128 = v_x128;
--      v_c128 = v_b128;
--      v_x128 = _mm_packus_epi16(v_x128, v_x128);
--      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
--      v_curr.ptr += 4;
--      v_prev.ptr += 4;
--      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
--      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
--      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
--      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
--      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
--      v_pa128 = _mm_abs_epi16(v_pa128);
--      v_pb128 = _mm_abs_epi16(v_pb128);
--      v_pc128 = _mm_abs_epi16(v_pc128);
--      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
--      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
--      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
--      v_x128 = _mm_add_epi8(v_x128, v_p128);
--      v_a128 = v_x128;
--      v_c128 = v_b128;
--      v_x128 = _mm_packus_epi16(v_x128, v_x128);
--      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
--      v_curr.ptr += 4;
--      v_prev.ptr += 4;
--    }
--    v_curr.len = 4;
--    v_prev.len = 4;
--    uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
--    while (v_curr.ptr < i_end1_curr) {
--      v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
--      v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
--      v_pa128 = _mm_sub_epi16(v_b128, v_c128);
--      v_pb128 = _mm_sub_epi16(v_a128, v_c128);
--      v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
--      v_pa128 = _mm_abs_epi16(v_pa128);
--      v_pb128 = _mm_abs_epi16(v_pb128);
--      v_pc128 = _mm_abs_epi16(v_pc128);
--      v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
--      v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
--      v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
--      v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
--      v_x128 = _mm_add_epi8(v_x128, v_p128);
--      v_a128 = v_x128;
--      v_c128 = v_b128;
--      v_x128 = _mm_packus_epi16(v_x128, v_x128);
--      wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
--      v_curr.ptr += 4;
--      v_prev.ptr += 4;
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_call_sequence == 32u) {
-+    } else if (self->private_impl.f_call_sequence < 32u) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      status = wuffs_qoi__decoder__do_decode_image_config(self, NULL, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+    } else if (self->private_impl.f_call_sequence == 40u) {
-+      if (16u != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
-+        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
-+        goto exit;
-+      }
-+    } else if (self->private_impl.f_call_sequence == 64u) {
-+      self->private_impl.f_call_sequence = 96u;
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-+    } else {
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-     }
--    v_curr.len = 0;
--    v_prev.len = 0;
--  }
--  return wuffs_base__make_empty_struct();
--}
--#endif  // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--// ‼ WUFFS MULTI-FILE SECTION -x86_sse42
--
--// -------- func png.decoder.get_quirk
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_png__decoder__get_quirk(
--    const wuffs_png__decoder* self,
--    uint32_t a_key) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
-+    if (a_dst != NULL) {
-+      wuffs_base__frame_config__set(
-+          a_dst,
-+          wuffs_base__utility__make_rect_ie_u32(
-+          0u,
-+          0u,
-+          self->private_impl.f_width,
-+          self->private_impl.f_height),
-+          ((wuffs_base__flicks)(0u)),
-+          0u,
-+          14u,
-+          0u,
-+          (self->private_impl.f_pixfmt == 2415954056u),
-+          false,
-+          0u);
-+    }
-+    self->private_impl.f_call_sequence = 64u;
- 
--  if ((a_key == 1u) && self->private_impl.f_ignore_checksum) {
--    return 1u;
-+    ok:
-+    self->private_impl.p_do_decode_frame_config = 0;
-+    goto exit;
-   }
--  return 0u;
--}
- 
--// -------- func png.decoder.set_quirk
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_png__decoder__set_quirk(
--    wuffs_png__decoder* self,
--    uint32_t a_key,
--    uint64_t a_value) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
- 
--  if (a_key == 1u) {
--    self->private_impl.f_ignore_checksum = (a_value > 0u);
--    wuffs_zlib__decoder__set_quirk(&self->private_data.f_zlib, a_key, a_value);
--    return wuffs_base__make_status(NULL);
--  }
--  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+  return status;
- }
- 
--// -------- func png.decoder.decode_image_config
-+// -------- func qoi.decoder.decode_frame
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_png__decoder__decode_image_config(
--    wuffs_png__decoder* self,
--    wuffs_base__image_config* a_dst,
--    wuffs_base__io_buffer* a_src) {
-+wuffs_qoi__decoder__decode_frame(
-+    wuffs_qoi__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts) {
-   if (!self) {
-     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
-@@ -54464,12 +67805,12 @@ wuffs_png__decoder__decode_image_config(
-         ? wuffs_base__error__disabled_by_previous_error
-         : wuffs_base__error__initialize_not_called);
-   }
--  if (!a_src) {
-+  if (!a_dst || !a_src) {
-     self->private_impl.magic = WUFFS_BASE__DISABLED;
-     return wuffs_base__make_status(wuffs_base__error__bad_argument);
-   }
-   if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 1)) {
-+      (self->private_impl.active_coroutine != 3)) {
-     self->private_impl.magic = WUFFS_BASE__DISABLED;
-     return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-   }
-@@ -54478,17 +67819,22 @@ wuffs_png__decoder__decode_image_config(
- 
-   wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_frame;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
-     while (true) {
-       {
--        wuffs_base__status t_0 = wuffs_png__decoder__do_decode_image_config(self, a_dst, a_src);
-+        wuffs_base__status t_0 = wuffs_qoi__decoder__do_decode_frame(self,
-+            a_dst,
-+            a_src,
-+            a_blend,
-+            a_workbuf,
-+            a_opts);
-         v_status = t_0;
-       }
-       if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_png__error__truncated_input);
-+        status = wuffs_base__make_status(wuffs_qoi__error__truncated_input);
-         goto exit;
-       }
-       status = v_status;
-@@ -54496,14 +67842,14 @@ wuffs_png__decoder__decode_image_config(
-     }
- 
-     ok:
--    self->private_impl.p_decode_image_config[0] = 0;
-+    self->private_impl.p_decode_frame = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
-+  self->private_impl.p_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
- 
-   goto exit;
-   exit:
-@@ -54513,21 +67859,21 @@ wuffs_png__decoder__decode_image_config(
-   return status;
- }
- 
--// -------- func png.decoder.do_decode_image_config
-+// -------- func qoi.decoder.do_decode_frame
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_png__decoder__do_decode_image_config(
--    wuffs_png__decoder* self,
--    wuffs_base__image_config* a_dst,
--    wuffs_base__io_buffer* a_src) {
-+wuffs_qoi__decoder__do_decode_frame(
-+    wuffs_qoi__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint64_t v_magic = 0;
--  uint64_t v_mark = 0;
--  uint32_t v_checksum_have = 0;
--  uint32_t v_checksum_want = 0;
-   wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+  uint64_t v_c64 = 0;
- 
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -54540,281 +67886,332 @@ wuffs_png__decoder__do_decode_image_config(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0];
--  if (coro_susp_point) {
--    v_checksum_have = self->private_data.s_do_decode_image_config[0].v_checksum_have;
--  }
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if (self->private_impl.f_call_sequence != 0u) {
--      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
--      goto exit;
--    } else if ( ! self->private_impl.f_seen_ihdr) {
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--        uint64_t t_0;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
--          t_0 = wuffs_base__peek_u64le__no_bounds_check(iop_a_src);
--          iop_a_src += 8;
--        } else {
--          self->private_data.s_do_decode_image_config[0].scratch = 0;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--            uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
--            *scratch <<= 8;
--            *scratch >>= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
--            if (num_bits_0 == 56) {
--              t_0 = ((uint64_t)(*scratch));
--              break;
--            }
--            num_bits_0 += 8u;
--            *scratch |= ((uint64_t)(num_bits_0)) << 56;
--          }
--        }
--        v_magic = t_0;
-+    if (self->private_impl.f_call_sequence == 64u) {
-+    } else if (self->private_impl.f_call_sequence < 64u) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-       }
--      if (v_magic != 727905341920923785u) {
--        status = wuffs_base__make_status(wuffs_png__error__bad_header);
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      status = wuffs_qoi__decoder__do_decode_frame_config(self, NULL, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+    } else {
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-+    }
-+    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
-+        wuffs_base__pixel_buffer__pixel_format(a_dst),
-+        wuffs_base__pixel_buffer__palette(a_dst),
-+        wuffs_base__utility__make_pixel_format(self->private_impl.f_pixfmt),
-+        wuffs_base__utility__empty_slice_u8(),
-+        a_blend);
-+    if ( ! wuffs_base__status__is_ok(&v_status)) {
-+      status = v_status;
-+      if (wuffs_base__status__is_error(&status)) {
-+        goto exit;
-+      } else if (wuffs_base__status__is_suspension(&status)) {
-+        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-         goto exit;
-       }
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--        uint64_t t_1;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
--          t_1 = wuffs_base__peek_u64le__no_bounds_check(iop_a_src);
--          iop_a_src += 8;
--        } else {
--          self->private_data.s_do_decode_image_config[0].scratch = 0;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--            uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
--            *scratch <<= 8;
--            *scratch >>= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
--            if (num_bits_1 == 56) {
--              t_1 = ((uint64_t)(*scratch));
--              break;
--            }
--            num_bits_1 += 8u;
--            *scratch |= ((uint64_t)(num_bits_1)) << 56;
--          }
--        }
--        v_magic = t_1;
-+      goto ok;
-+    }
-+    self->private_impl.f_dst_x = 0u;
-+    self->private_impl.f_dst_y = 0u;
-+    self->private_data.f_pixel[0u] = 0u;
-+    self->private_data.f_pixel[1u] = 0u;
-+    self->private_data.f_pixel[2u] = 0u;
-+    self->private_data.f_pixel[3u] = 255u;
-+    wuffs_private_impl__bulk_memset(&self->private_data.f_cache[0], 256u, 0u);
-+    self->private_impl.f_remaining_pixels_times_4 = (((uint64_t)(self->private_impl.f_width)) * ((uint64_t)(self->private_impl.f_height)) * 4u);
-+    while (self->private_impl.f_remaining_pixels_times_4 > 0u) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-       }
--      if (v_magic != 5927942488114331648u) {
--        if (v_magic == 5278895250759221248u) {
--          status = wuffs_base__make_status(wuffs_png__error__unsupported_cgbi_extension);
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+      status = wuffs_qoi__decoder__from_src_to_buffer(self, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+      if (self->private_impl.f_remaining_pixels_times_4 < ((uint64_t)(self->private_impl.f_buffer_index))) {
-+        status = wuffs_base__make_status(wuffs_base__error__too_much_data);
-+        goto exit;
-+      }
-+      self->private_impl.f_remaining_pixels_times_4 -= ((uint64_t)(self->private_impl.f_buffer_index));
-+      v_status = wuffs_qoi__decoder__from_buffer_to_dst(self, a_dst);
-+      if ( ! wuffs_base__status__is_ok(&v_status)) {
-+        status = v_status;
-+        if (wuffs_base__status__is_error(&status)) {
-+          goto exit;
-+        } else if (wuffs_base__status__is_suspension(&status)) {
-+          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-           goto exit;
-         }
--        status = wuffs_base__make_status(wuffs_png__error__bad_header);
--        goto exit;
-+        goto ok;
-       }
--      self->private_impl.f_chunk_type_array[0u] = 73u;
--      self->private_impl.f_chunk_type_array[1u] = 72u;
--      self->private_impl.f_chunk_type_array[2u] = 68u;
--      self->private_impl.f_chunk_type_array[3u] = 82u;
--      wuffs_base__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
--          sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
--      wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4));
--      while (true) {
--        v_mark = ((uint64_t)(iop_a_src - io0_a_src));
--        {
--          if (a_src) {
--            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+      uint64_t t_0;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
-+        t_0 = wuffs_base__peek_u64be__no_bounds_check(iop_a_src);
-+        iop_a_src += 8;
-+      } else {
-+        self->private_data.s_do_decode_frame.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-           }
--          wuffs_base__status t_2 = wuffs_png__decoder__decode_ihdr(self, a_src);
--          v_status = t_2;
--          if (a_src) {
--            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          uint64_t* scratch = &self->private_data.s_do_decode_frame.scratch;
-+          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
-+          *scratch >>= 8;
-+          *scratch <<= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
-+          if (num_bits_0 == 56) {
-+            t_0 = ((uint64_t)(*scratch >> 0));
-+            break;
-           }
-+          num_bits_0 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_0));
-         }
--        if ( ! self->private_impl.f_ignore_checksum) {
--          v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
--        }
--        if (wuffs_base__status__is_ok(&v_status)) {
--          break;
--        }
--        status = v_status;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
-       }
-+      v_c64 = t_0;
-+    }
-+    if (v_c64 != 1u) {
-+      status = wuffs_base__make_status(wuffs_qoi__error__bad_footer);
-+      goto exit;
-+    }
-+    self->private_impl.f_call_sequence = 96u;
-+
-+    ok:
-+    self->private_impl.p_do_decode_frame = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func qoi.decoder.from_src_to_buffer
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_qoi__decoder__from_src_to_buffer(
-+    wuffs_qoi__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_c8 = 0;
-+  uint8_t v_dg = 0;
-+  uint32_t v_bi = 0;
-+  uint32_t v_bj = 0;
-+  uint32_t v_bk = 0;
-+  uint32_t v_ci = 0;
-+  uint32_t v_hash4 = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_from_src_to_buffer;
-+  if (coro_susp_point) {
-+    v_dg = self->private_data.s_from_src_to_buffer.v_dg;
-+    v_bi = self->private_data.s_from_src_to_buffer.v_bi;
-+    v_bk = self->private_data.s_from_src_to_buffer.v_bk;
-+  }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    v_bk = 7936u;
-+    if (self->private_impl.f_remaining_pixels_times_4 < 7936u) {
-+      v_bk = ((uint32_t)(self->private_impl.f_remaining_pixels_times_4));
-+    }
-+    while (v_bi < v_bk) {
-       {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--        uint32_t t_3;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--          t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--          iop_a_src += 4;
--        } else {
--          self->private_data.s_do_decode_image_config[0].scratch = 0;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--            uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu));
--            *scratch >>= 8;
--            *scratch <<= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
--            if (num_bits_3 == 24) {
--              t_3 = ((uint32_t)(*scratch >> 32));
--              break;
--            }
--            num_bits_3 += 8u;
--            *scratch |= ((uint64_t)(num_bits_3));
--          }
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-         }
--        v_checksum_want = t_3;
--      }
--      if ( ! self->private_impl.f_ignore_checksum && (v_checksum_have != v_checksum_want)) {
--        status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
--        goto exit;
--      }
--      self->private_impl.f_seen_ihdr = true;
--    } else if (self->private_impl.f_metadata_fourcc != 0u) {
--      self->private_impl.f_call_sequence = 16u;
--      status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
--      goto ok;
--    }
--    while (true) {
--      if (((uint64_t)(io2_a_src - iop_a_src)) < 8u) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
--        continue;
-+        uint8_t t_0 = *iop_a_src++;
-+        v_c8 = t_0;
-       }
--      self->private_impl.f_chunk_length = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--      self->private_impl.f_chunk_type = ((uint32_t)((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) >> 32u)));
--      if (self->private_impl.f_chunk_type == 1413563465u) {
--        if ( ! self->private_impl.f_seen_actl || self->private_impl.f_seen_fctl) {
--          break;
-+      if (v_c8 == 254u) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_1 = *iop_a_src++;
-+          self->private_data.f_pixel[2u] = t_1;
-         }
--        self->private_impl.f_seen_idat = true;
--      } else if (self->private_impl.f_chunk_type == 1413571686u) {
--        if (self->private_impl.f_seen_idat && self->private_impl.f_seen_fctl) {
--          break;
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_2 = *iop_a_src++;
-+          self->private_data.f_pixel[1u] = t_2;
-         }
--        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--        goto exit;
--      }
--      iop_a_src += 8u;
--      if ( ! self->private_impl.f_ignore_checksum && ((self->private_impl.f_chunk_type & 32u) == 0u)) {
--        self->private_impl.f_chunk_type_array[0u] = ((uint8_t)((self->private_impl.f_chunk_type >> 0u)));
--        self->private_impl.f_chunk_type_array[1u] = ((uint8_t)((self->private_impl.f_chunk_type >> 8u)));
--        self->private_impl.f_chunk_type_array[2u] = ((uint8_t)((self->private_impl.f_chunk_type >> 16u)));
--        self->private_impl.f_chunk_type_array[3u] = ((uint8_t)((self->private_impl.f_chunk_type >> 24u)));
--        wuffs_base__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
--            sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
--        wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4));
--      }
--      while (true) {
--        v_mark = ((uint64_t)(iop_a_src - io0_a_src));
-         {
--          if (a_src) {
--            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-           }
--          wuffs_base__status t_4 = wuffs_png__decoder__decode_other_chunk(self, a_src, false);
--          v_status = t_4;
--          if (a_src) {
--            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          uint8_t t_3 = *iop_a_src++;
-+          self->private_data.f_pixel[0u] = t_3;
-+        }
-+      } else if (v_c8 == 255u) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-           }
-+          uint8_t t_4 = *iop_a_src++;
-+          self->private_data.f_pixel[2u] = t_4;
-         }
--        if ( ! self->private_impl.f_ignore_checksum && ((self->private_impl.f_chunk_type & 32u) == 0u)) {
--          v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_5 = *iop_a_src++;
-+          self->private_data.f_pixel[1u] = t_5;
-         }
--        if (wuffs_base__status__is_ok(&v_status)) {
--          break;
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_6 = *iop_a_src++;
-+          self->private_data.f_pixel[0u] = t_6;
-         }
--        status = v_status;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
--      }
--      if (self->private_impl.f_metadata_fourcc != 0u) {
--        self->private_impl.f_call_sequence = 16u;
--        status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
--        goto ok;
--      }
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
--        uint32_t t_5;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--          t_5 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--          iop_a_src += 4;
--        } else {
--          self->private_data.s_do_decode_image_config[0].scratch = 0;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--            uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFFu));
--            *scratch >>= 8;
--            *scratch <<= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5);
--            if (num_bits_5 == 24) {
--              t_5 = ((uint32_t)(*scratch >> 32));
--              break;
--            }
--            num_bits_5 += 8u;
--            *scratch |= ((uint64_t)(num_bits_5));
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-           }
-+          uint8_t t_7 = *iop_a_src++;
-+          self->private_data.f_pixel[3u] = t_7;
-         }
--        v_checksum_want = t_5;
--      }
--      if ( ! self->private_impl.f_ignore_checksum && ((self->private_impl.f_chunk_type & 32u) == 0u) && (v_checksum_have != v_checksum_want)) {
--        status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
--        goto exit;
--      }
--    }
--    if ((self->private_impl.f_color_type == 3u) &&  ! self->private_impl.f_seen_plte) {
--      status = wuffs_base__make_status(wuffs_png__error__missing_palette);
--      goto exit;
--    }
--    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
--    self->private_impl.f_first_config_io_position = self->private_impl.f_frame_config_io_position;
--    if (a_dst != NULL) {
--      wuffs_base__image_config__set(
--          a_dst,
--          self->private_impl.f_dst_pixfmt,
--          0u,
--          self->private_impl.f_width,
--          self->private_impl.f_height,
--          self->private_impl.f_first_config_io_position,
--          ((self->private_impl.f_color_type <= 3u) &&  ! self->private_impl.f_seen_trns));
--    }
--    if ( ! self->private_impl.f_seen_actl) {
--      self->private_impl.f_num_animation_frames_value = 1u;
--      self->private_impl.f_first_rect_x0 = 0u;
--      self->private_impl.f_first_rect_y0 = 0u;
--      self->private_impl.f_first_rect_x1 = self->private_impl.f_width;
--      self->private_impl.f_first_rect_y1 = self->private_impl.f_height;
--      self->private_impl.f_first_duration = 0u;
--      self->private_impl.f_first_disposal = 0u;
--      self->private_impl.f_first_overwrite_instead_of_blend = false;
--    }
--    self->private_impl.f_call_sequence = 32u;
-+      } else if (((uint8_t)(v_c8 >> 6u)) == 0u) {
-+        v_ci = (4u * ((uint32_t)(((uint8_t)(v_c8 & 63u)))));
-+        self->private_data.f_pixel[0u] = self->private_data.f_cache[(v_ci + 0u)];
-+        self->private_data.f_pixel[1u] = self->private_data.f_cache[(v_ci + 1u)];
-+        self->private_data.f_pixel[2u] = self->private_data.f_cache[(v_ci + 2u)];
-+        self->private_data.f_pixel[3u] = self->private_data.f_cache[(v_ci + 3u)];
-+        self->private_data.f_buffer[(v_bi + 0u)] = self->private_data.f_pixel[0u];
-+        self->private_data.f_buffer[(v_bi + 1u)] = self->private_data.f_pixel[1u];
-+        self->private_data.f_buffer[(v_bi + 2u)] = self->private_data.f_pixel[2u];
-+        self->private_data.f_buffer[(v_bi + 3u)] = self->private_data.f_pixel[3u];
-+        v_bi += 4u;
-+        continue;
-+      } else if (((uint8_t)(v_c8 >> 6u)) == 1u) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        self->private_data.f_pixel[2u] += ((uint8_t)(((uint8_t)(((uint8_t)(v_c8 >> 4u)) & 3u)) + 254u));
-+        self->private_data.f_pixel[1u] += ((uint8_t)(((uint8_t)(((uint8_t)(v_c8 >> 2u)) & 3u)) + 254u));
-+        self->private_data.f_pixel[0u] += ((uint8_t)(((uint8_t)(((uint8_t)(v_c8 >> 0u)) & 3u)) + 254u));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+      } else if (((uint8_t)(v_c8 >> 6u)) == 2u) {
-+        v_dg = ((uint8_t)(((uint8_t)(v_c8 & 63u)) + 224u));
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_8 = *iop_a_src++;
-+          v_c8 = t_8;
-+        }
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        self->private_data.f_pixel[2u] += ((uint8_t)(((uint8_t)(v_dg + 248u)) + ((uint8_t)(15u & ((uint8_t)(v_c8 >> 4u))))));
-+        self->private_data.f_pixel[1u] += v_dg;
-+        self->private_data.f_pixel[0u] += ((uint8_t)(((uint8_t)(v_dg + 248u)) + ((uint8_t)(15u & ((uint8_t)(v_c8 >> 0u))))));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+      } else {
-+        v_bj = (v_bi + (4u * (63u & (1u + ((uint32_t)(v_c8))))));
-+        while (v_bi < v_bj) {
-+          self->private_data.f_buffer[(v_bi + 0u)] = self->private_data.f_pixel[0u];
-+          self->private_data.f_buffer[(v_bi + 1u)] = self->private_data.f_pixel[1u];
-+          self->private_data.f_buffer[(v_bi + 2u)] = self->private_data.f_pixel[2u];
-+          self->private_data.f_buffer[(v_bi + 3u)] = self->private_data.f_pixel[3u];
-+          v_bi += 4u;
-+        }
-+        continue;
-+      }
-+      v_hash4 = (4u * (63u & ((((uint32_t)(self->private_data.f_pixel[2u])) * 3u) +
-+          (((uint32_t)(self->private_data.f_pixel[1u])) * 5u) +
-+          (((uint32_t)(self->private_data.f_pixel[0u])) * 7u) +
-+          (((uint32_t)(self->private_data.f_pixel[3u])) * 11u))));
-+      self->private_data.f_cache[(v_hash4 + 0u)] = self->private_data.f_pixel[0u];
-+      self->private_data.f_cache[(v_hash4 + 1u)] = self->private_data.f_pixel[1u];
-+      self->private_data.f_cache[(v_hash4 + 2u)] = self->private_data.f_pixel[2u];
-+      self->private_data.f_cache[(v_hash4 + 3u)] = self->private_data.f_pixel[3u];
-+      self->private_data.f_buffer[(v_bi + 0u)] = self->private_data.f_pixel[0u];
-+      self->private_data.f_buffer[(v_bi + 1u)] = self->private_data.f_pixel[1u];
-+      self->private_data.f_buffer[(v_bi + 2u)] = self->private_data.f_pixel[2u];
-+      self->private_data.f_buffer[(v_bi + 3u)] = self->private_data.f_pixel[3u];
-+      v_bi += 4u;
-+    }
-+    self->private_impl.f_buffer_index = v_bi;
- 
-+    goto ok;
-     ok:
--    self->private_impl.p_do_decode_image_config[0] = 0;
-+    self->private_impl.p_from_src_to_buffer = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_do_decode_image_config[0].v_checksum_have = v_checksum_have;
-+  self->private_impl.p_from_src_to_buffer = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_from_src_to_buffer.v_dg = v_dg;
-+  self->private_data.s_from_src_to_buffer.v_bi = v_bi;
-+  self->private_data.s_from_src_to_buffer.v_bk = v_bk;
- 
-   goto exit;
-   exit:
-@@ -54825,1068 +68222,1113 @@ wuffs_png__decoder__do_decode_image_config(
-   return status;
- }
- 
--// -------- func png.decoder.decode_ihdr
-+// -------- func qoi.decoder.from_buffer_to_dst
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_png__decoder__decode_ihdr(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  uint32_t v_a32 = 0;
--  uint8_t v_a8 = 0;
-+wuffs_qoi__decoder__from_buffer_to_dst(
-+    wuffs_qoi__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst) {
-+  wuffs_base__pixel_format v_dst_pixfmt = {0};
-+  uint32_t v_dst_bits_per_pixel = 0;
-+  uint32_t v_dst_bytes_per_pixel = 0;
-+  uint64_t v_dst_bytes_per_row = 0;
-+  wuffs_base__table_u8 v_tab = {0};
-+  uint32_t v_bi = 0;
-+  uint32_t v_rem_x = 0;
-+  wuffs_base__slice_u8 v_dst = {0};
-+  wuffs_base__slice_u8 v_src = {0};
-+  uint32_t v_src_length = 0;
-+  uint64_t v_i = 0;
- 
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
-+  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
-+  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
-+  if ((v_dst_bits_per_pixel & 7u) != 0u) {
-+    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-   }
--
--  uint32_t coro_susp_point = self->private_impl.p_decode_ihdr[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      uint32_t t_0;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--        iop_a_src += 4;
--      } else {
--        self->private_data.s_decode_ihdr[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_decode_ihdr[0].scratch;
--          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
--          *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
--          if (num_bits_0 == 24) {
--            t_0 = ((uint32_t)(*scratch >> 32));
--            break;
--          }
--          num_bits_0 += 8u;
--          *scratch |= ((uint64_t)(num_bits_0));
--        }
--      }
--      v_a32 = t_0;
--    }
--    if ((v_a32 == 0u) || (v_a32 > 2147483647u)) {
--      status = wuffs_base__make_status(wuffs_png__error__bad_header);
--      goto exit;
--    } else if (v_a32 > 16777215u) {
--      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
--      goto exit;
--    }
--    self->private_impl.f_width = v_a32;
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--      uint32_t t_1;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--        iop_a_src += 4;
--      } else {
--        self->private_data.s_decode_ihdr[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_decode_ihdr[0].scratch;
--          uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
--          *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
--          if (num_bits_1 == 24) {
--            t_1 = ((uint32_t)(*scratch >> 32));
--            break;
--          }
--          num_bits_1 += 8u;
--          *scratch |= ((uint64_t)(num_bits_1));
--        }
--      }
--      v_a32 = t_1;
--    }
--    if ((v_a32 == 0u) || (v_a32 > 2147483647u)) {
--      status = wuffs_base__make_status(wuffs_png__error__bad_header);
--      goto exit;
--    } else if (v_a32 > 16777215u) {
--      status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
--      goto exit;
--    }
--    self->private_impl.f_height = v_a32;
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_2 = *iop_a_src++;
--      v_a8 = t_2;
--    }
--    if (v_a8 > 16u) {
--      status = wuffs_base__make_status(wuffs_png__error__bad_header);
--      goto exit;
--    }
--    self->private_impl.f_depth = v_a8;
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_3 = *iop_a_src++;
--      v_a8 = t_3;
--    }
--    if ((v_a8 == 1u) || (v_a8 == 5u) || (v_a8 > 6u)) {
--      status = wuffs_base__make_status(wuffs_png__error__bad_header);
--      goto exit;
--    }
--    self->private_impl.f_color_type = v_a8;
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_4 = *iop_a_src++;
--      v_a8 = t_4;
--    }
--    if (v_a8 != 0u) {
--      status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method);
--      goto exit;
--    }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
-+  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
-+  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
-+  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
-+  while (v_bi < self->private_impl.f_buffer_index) {
-+    if (self->private_impl.f_width <= self->private_impl.f_dst_x) {
-+      self->private_impl.f_dst_x = 0u;
-+      self->private_impl.f_dst_y += 1u;
-+      if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
-+        break;
-       }
--      uint8_t t_5 = *iop_a_src++;
--      v_a8 = t_5;
--    }
--    if (v_a8 != 0u) {
--      status = wuffs_base__make_status(wuffs_png__error__bad_header);
--      goto exit;
-+      v_rem_x = self->private_impl.f_width;
-+    } else {
-+      v_rem_x = (self->private_impl.f_width - self->private_impl.f_dst_x);
-     }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_6 = *iop_a_src++;
--      v_a8 = t_6;
-+    v_src = wuffs_base__make_slice_u8_ij(self->private_data.f_buffer, v_bi, self->private_impl.f_buffer_index);
-+    if (((uint64_t)((4u * v_rem_x))) < ((uint64_t)(v_src.len))) {
-+      v_src = wuffs_base__slice_u8__subslice_j(v_src, ((uint64_t)((4u * v_rem_x))));
-     }
--    if (v_a8 == 0u) {
--      self->private_impl.f_interlace_pass = 0u;
--    } else if (v_a8 == 1u) {
--      self->private_impl.f_interlace_pass = 1u;
--      self->private_impl.choosy_filter_and_swizzle = (
--          &wuffs_png__decoder__filter_and_swizzle_tricky);
--    } else {
--      status = wuffs_base__make_status(wuffs_png__error__bad_header);
--      goto exit;
-+    v_src_length = ((uint32_t)(((uint64_t)(v_src.len))));
-+    v_bi += v_src_length;
-+    v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
-+    if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
-+      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
-     }
--    self->private_impl.f_filter_distance = 0u;
--    wuffs_png__decoder__assign_filter_distance(self);
--    if (self->private_impl.f_filter_distance == 0u) {
--      status = wuffs_base__make_status(wuffs_png__error__bad_header);
--      goto exit;
-+    v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel)));
-+    self->private_impl.f_dst_x += (v_src_length / 4u);
-+    if (v_i < ((uint64_t)(v_dst.len))) {
-+      wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), wuffs_base__pixel_buffer__palette(a_dst), v_src);
-     }
--    self->private_impl.f_overall_workbuf_length = (((uint64_t)(self->private_impl.f_height)) * (1u + wuffs_png__decoder__calculate_bytes_per_row(self, self->private_impl.f_width)));
--    wuffs_png__decoder__choose_filter_implementations(self);
-+  }
-+  return wuffs_base__make_status(NULL);
-+}
- 
--    goto ok;
--    ok:
--    self->private_impl.p_decode_ihdr[0] = 0;
--    goto exit;
-+// -------- func qoi.decoder.frame_dirty_rect
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
-+wuffs_qoi__decoder__frame_dirty_rect(
-+    const wuffs_qoi__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_rect_ie_u32();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_rect_ie_u32();
-   }
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_ihdr[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  return wuffs_base__utility__make_rect_ie_u32(
-+      0u,
-+      0u,
-+      self->private_impl.f_width,
-+      self->private_impl.f_height);
-+}
-+
-+// -------- func qoi.decoder.num_animation_loops
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_qoi__decoder__num_animation_loops(
-+    const wuffs_qoi__decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  return 0u;
-+}
-+
-+// -------- func qoi.decoder.num_decoded_frame_configs
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_qoi__decoder__num_decoded_frame_configs(
-+    const wuffs_qoi__decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  if (self->private_impl.f_call_sequence > 32u) {
-+    return 1u;
-+  }
-+  return 0u;
-+}
- 
-+// -------- func qoi.decoder.num_decoded_frames
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_qoi__decoder__num_decoded_frames(
-+    const wuffs_qoi__decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  if (self->private_impl.f_call_sequence > 64u) {
-+    return 1u;
-+  }
-+  return 0u;
-+}
-+
-+// -------- func qoi.decoder.restart_frame
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_qoi__decoder__restart_frame(
-+    wuffs_qoi__decoder* self,
-+    uint64_t a_index,
-+    uint64_t a_io_position) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+
-+  if (self->private_impl.f_call_sequence < 32u) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+  }
-+  if ((a_index != 0u) || (a_io_position != 14u)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  self->private_impl.f_call_sequence = 40u;
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+// -------- func qoi.decoder.set_report_metadata
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_qoi__decoder__set_report_metadata(
-+    wuffs_qoi__decoder* self,
-+    uint32_t a_fourcc,
-+    bool a_report) {
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+// -------- func qoi.decoder.tell_me_more
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_qoi__decoder__tell_me_more(
-+    wuffs_qoi__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__more_information* a_minfo,
-+    wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_dst || !a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 4)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  status = wuffs_base__make_status(wuffs_base__error__no_more_information);
-+  goto exit;
-+
-+  goto ok;
-+  ok:
-   goto exit;
-   exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-   }
--
-   return status;
- }
- 
--// -------- func png.decoder.assign_filter_distance
-+// -------- func qoi.decoder.workbuf_len
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_qoi__decoder__workbuf_len(
-+    const wuffs_qoi__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+
-+  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
-+}
-+
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__QOI)
-+
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__SHA256)
-+
-+// ---------------- Status Codes Implementations
-+
-+// ---------------- Private Consts
-+
-+static const uint32_t
-+WUFFS_SHA256__INITIAL_SHA256_H[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  1779033703u, 3144134277u, 1013904242u, 2773480762u, 1359893119u, 2600822924u, 528734635u, 1541459225u,
-+};
-+
-+static const uint32_t
-+WUFFS_SHA256__K[64] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  1116352408u, 1899447441u, 3049323471u, 3921009573u, 961987163u, 1508970993u, 2453635748u, 2870763221u,
-+  3624381080u, 310598401u, 607225278u, 1426881987u, 1925078388u, 2162078206u, 2614888103u, 3248222580u,
-+  3835390401u, 4022224774u, 264347078u, 604807628u, 770255983u, 1249150122u, 1555081692u, 1996064986u,
-+  2554220882u, 2821834349u, 2952996808u, 3210313671u, 3336571891u, 3584528711u, 113926993u, 338241895u,
-+  666307205u, 773529912u, 1294757372u, 1396182291u, 1695183700u, 1986661051u, 2177026350u, 2456956037u,
-+  2730485921u, 2820302411u, 3259730800u, 3345764771u, 3516065817u, 3600352804u, 4094571909u, 275423344u,
-+  430227734u, 506948616u, 659060556u, 883997877u, 958139571u, 1322822218u, 1537002063u, 1747873779u,
-+  1955562222u, 2024104815u, 2227730452u, 2361852424u, 2428436474u, 2756734187u, 3204031479u, 3329325298u,
-+};
-+
-+// ---------------- Private Initializer Prototypes
-+
-+// ---------------- Private Function Prototypes
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__empty_struct
--wuffs_png__decoder__assign_filter_distance(
--    wuffs_png__decoder* self) {
--  if (self->private_impl.f_depth < 8u) {
--    if ((self->private_impl.f_depth != 1u) && (self->private_impl.f_depth != 2u) && (self->private_impl.f_depth != 4u)) {
--      return wuffs_base__make_empty_struct();
--    } else if (self->private_impl.f_color_type == 0u) {
--      self->private_impl.f_dst_pixfmt = 536870920u;
--      self->private_impl.f_src_pixfmt = 536870920u;
--    } else if (self->private_impl.f_color_type == 3u) {
--      self->private_impl.f_dst_pixfmt = 2198077448u;
--      self->private_impl.f_src_pixfmt = 2198077448u;
-+wuffs_sha256__hasher__up(
-+    wuffs_sha256__hasher* self,
-+    wuffs_base__slice_u8 a_x);
-+
-+// ---------------- VTables
-+
-+const wuffs_base__hasher_bitvec256__func_ptrs
-+wuffs_sha256__hasher__func_ptrs_for__wuffs_base__hasher_bitvec256 = {
-+  (wuffs_base__bitvec256(*)(const void*))(&wuffs_sha256__hasher__checksum_bitvec256),
-+  (uint64_t(*)(const void*,
-+      uint32_t))(&wuffs_sha256__hasher__get_quirk),
-+  (wuffs_base__status(*)(void*,
-+      uint32_t,
-+      uint64_t))(&wuffs_sha256__hasher__set_quirk),
-+  (wuffs_base__empty_struct(*)(void*,
-+      wuffs_base__slice_u8))(&wuffs_sha256__hasher__update),
-+  (wuffs_base__bitvec256(*)(void*,
-+      wuffs_base__slice_u8))(&wuffs_sha256__hasher__update_bitvec256),
-+};
-+
-+// ---------------- Initializer Implementations
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_sha256__hasher__initialize(
-+    wuffs_sha256__hasher* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options){
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (sizeof(*self) != sizeof_star_self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  }
-+  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
-+      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+  }
-+
-+  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
-+    // The whole point of this if-check is to detect an uninitialized *self.
-+    // We disable the warning on GCC. Clang-5.0 does not have this warning.
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+#endif
-+    if (self->private_impl.magic != 0) {
-+      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+    }
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+  } else {
-+    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
-+      memset(self, 0, sizeof(*self));
-+      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-     } else {
--      return wuffs_base__make_empty_struct();
-+      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-     }
--    self->private_impl.f_filter_distance = 1u;
--    self->private_impl.choosy_filter_and_swizzle = (
--        &wuffs_png__decoder__filter_and_swizzle_tricky);
--  } else if (self->private_impl.f_color_type == 0u) {
--    if (self->private_impl.f_depth == 8u) {
--      self->private_impl.f_dst_pixfmt = 536870920u;
--      self->private_impl.f_src_pixfmt = 536870920u;
--      self->private_impl.f_filter_distance = 1u;
--    } else if (self->private_impl.f_depth == 16u) {
--      if (self->private_impl.f_interlace_pass == 0u) {
--        self->private_impl.f_dst_pixfmt = 536870923u;
--        self->private_impl.f_src_pixfmt = 537919499u;
--      } else {
--        self->private_impl.f_dst_pixfmt = 2164308923u;
--        self->private_impl.f_src_pixfmt = 2164308923u;
-+  }
-+
-+  self->private_impl.magic = WUFFS_BASE__MAGIC;
-+  self->private_impl.vtable_for__wuffs_base__hasher_bitvec256.vtable_name =
-+      wuffs_base__hasher_bitvec256__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__hasher_bitvec256.function_pointers =
-+      (const void*)(&wuffs_sha256__hasher__func_ptrs_for__wuffs_base__hasher_bitvec256);
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+wuffs_sha256__hasher*
-+wuffs_sha256__hasher__alloc(void) {
-+  wuffs_sha256__hasher* x =
-+      (wuffs_sha256__hasher*)(calloc(1, sizeof(wuffs_sha256__hasher)));
-+  if (!x) {
-+    return NULL;
-+  }
-+  if (wuffs_sha256__hasher__initialize(
-+      x, sizeof(wuffs_sha256__hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+    free(x);
-+    return NULL;
-+  }
-+  return x;
-+}
-+
-+size_t
-+sizeof__wuffs_sha256__hasher(void) {
-+  return sizeof(wuffs_sha256__hasher);
-+}
-+
-+// ---------------- Function Implementations
-+
-+// -------- func sha256.hasher.get_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_sha256__hasher__get_quirk(
-+    const wuffs_sha256__hasher* self,
-+    uint32_t a_key) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  return 0u;
-+}
-+
-+// -------- func sha256.hasher.set_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_sha256__hasher__set_quirk(
-+    wuffs_sha256__hasher* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+
-+  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+}
-+
-+// -------- func sha256.hasher.update
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_sha256__hasher__update(
-+    wuffs_sha256__hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-+  if (!self) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+
-+  uint64_t v_new_lmu = 0;
-+
-+  if ((self->private_impl.f_length_modulo_u64 == 0u) &&  ! self->private_impl.f_length_overflows_u64) {
-+    self->private_impl.f_h0 = WUFFS_SHA256__INITIAL_SHA256_H[0u];
-+    self->private_impl.f_h1 = WUFFS_SHA256__INITIAL_SHA256_H[1u];
-+    self->private_impl.f_h2 = WUFFS_SHA256__INITIAL_SHA256_H[2u];
-+    self->private_impl.f_h3 = WUFFS_SHA256__INITIAL_SHA256_H[3u];
-+    self->private_impl.f_h4 = WUFFS_SHA256__INITIAL_SHA256_H[4u];
-+    self->private_impl.f_h5 = WUFFS_SHA256__INITIAL_SHA256_H[5u];
-+    self->private_impl.f_h6 = WUFFS_SHA256__INITIAL_SHA256_H[6u];
-+    self->private_impl.f_h7 = WUFFS_SHA256__INITIAL_SHA256_H[7u];
-+  }
-+  v_new_lmu = ((uint64_t)(self->private_impl.f_length_modulo_u64 + ((uint64_t)(a_x.len))));
-+  self->private_impl.f_length_overflows_u64 = ((v_new_lmu < self->private_impl.f_length_modulo_u64) || self->private_impl.f_length_overflows_u64);
-+  self->private_impl.f_length_modulo_u64 = v_new_lmu;
-+  if (self->private_impl.f_buf_len != 0u) {
-+    while (self->private_impl.f_buf_len < 64u) {
-+      if (((uint64_t)(a_x.len)) <= 0u) {
-+        return wuffs_base__make_empty_struct();
-       }
--      self->private_impl.f_filter_distance = 2u;
--    }
--  } else if (self->private_impl.f_color_type == 2u) {
--    if (self->private_impl.f_depth == 8u) {
--      self->private_impl.f_dst_pixfmt = 2147485832u;
--      self->private_impl.f_src_pixfmt = 2684356744u;
--      self->private_impl.f_filter_distance = 3u;
--    } else if (self->private_impl.f_depth == 16u) {
--      self->private_impl.f_dst_pixfmt = 2164308923u;
--      self->private_impl.f_src_pixfmt = 2164308923u;
--      self->private_impl.f_filter_distance = 6u;
--      self->private_impl.choosy_filter_and_swizzle = (
--          &wuffs_png__decoder__filter_and_swizzle_tricky);
--    }
--  } else if (self->private_impl.f_color_type == 3u) {
--    if (self->private_impl.f_depth == 8u) {
--      self->private_impl.f_dst_pixfmt = 2198077448u;
--      self->private_impl.f_src_pixfmt = 2198077448u;
--      self->private_impl.f_filter_distance = 1u;
--    }
--  } else if (self->private_impl.f_color_type == 4u) {
--    if (self->private_impl.f_depth == 8u) {
--      self->private_impl.f_dst_pixfmt = 2164295816u;
--      self->private_impl.f_src_pixfmt = 2164295816u;
--      self->private_impl.f_filter_distance = 2u;
--      self->private_impl.choosy_filter_and_swizzle = (
--          &wuffs_png__decoder__filter_and_swizzle_tricky);
--    } else if (self->private_impl.f_depth == 16u) {
--      self->private_impl.f_dst_pixfmt = 2164308923u;
--      self->private_impl.f_src_pixfmt = 2164308923u;
--      self->private_impl.f_filter_distance = 4u;
--      self->private_impl.choosy_filter_and_swizzle = (
--          &wuffs_png__decoder__filter_and_swizzle_tricky);
--    }
--  } else if (self->private_impl.f_color_type == 6u) {
--    if (self->private_impl.f_depth == 8u) {
--      self->private_impl.f_dst_pixfmt = 2164295816u;
--      self->private_impl.f_src_pixfmt = 2701166728u;
--      self->private_impl.f_filter_distance = 4u;
--    } else if (self->private_impl.f_depth == 16u) {
--      self->private_impl.f_dst_pixfmt = 2164308923u;
--      self->private_impl.f_src_pixfmt = 2164308923u;
--      self->private_impl.f_filter_distance = 8u;
--      self->private_impl.choosy_filter_and_swizzle = (
--          &wuffs_png__decoder__filter_and_swizzle_tricky);
-+      self->private_impl.f_buf_data[self->private_impl.f_buf_len] = a_x.ptr[0u];
-+      self->private_impl.f_buf_len += 1u;
-+      a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
-     }
-+    self->private_impl.f_buf_len = 0u;
-+    wuffs_sha256__hasher__up(self, wuffs_base__make_slice_u8(self->private_impl.f_buf_data, 64));
-   }
-+  wuffs_sha256__hasher__up(self, a_x);
-   return wuffs_base__make_empty_struct();
- }
- 
--// -------- func png.decoder.calculate_bytes_per_row
-+// -------- func sha256.hasher.update_bitvec256
- 
- WUFFS_BASE__GENERATED_C_CODE
--static uint64_t
--wuffs_png__decoder__calculate_bytes_per_row(
--    const wuffs_png__decoder* self,
--    uint32_t a_width) {
--  uint64_t v_bytes_per_channel = 0;
--
--  if (self->private_impl.f_depth == 1u) {
--    return ((uint64_t)(((a_width + 7u) / 8u)));
--  } else if (self->private_impl.f_depth == 2u) {
--    return ((uint64_t)(((a_width + 3u) / 4u)));
--  } else if (self->private_impl.f_depth == 4u) {
--    return ((uint64_t)(((a_width + 1u) / 2u)));
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__bitvec256
-+wuffs_sha256__hasher__update_bitvec256(
-+    wuffs_sha256__hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-+  if (!self) {
-+    return wuffs_base__utility__make_bitvec256(0u, 0u, 0u, 0u);
-   }
--  v_bytes_per_channel = ((uint64_t)((self->private_impl.f_depth >> 3u)));
--  return (((uint64_t)(a_width)) * v_bytes_per_channel * ((uint64_t)(WUFFS_PNG__NUM_CHANNELS[self->private_impl.f_color_type])));
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__utility__make_bitvec256(0u, 0u, 0u, 0u);
-+  }
-+
-+  wuffs_sha256__hasher__update(self, a_x);
-+  return wuffs_sha256__hasher__checksum_bitvec256(self);
- }
- 
--// -------- func png.decoder.choose_filter_implementations
-+// -------- func sha256.hasher.up
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__empty_struct
--wuffs_png__decoder__choose_filter_implementations(
--    wuffs_png__decoder* self) {
--  if (self->private_impl.f_filter_distance == 3u) {
--    self->private_impl.choosy_filter_1 = (
--        &wuffs_png__decoder__filter_1_distance_3_fallback);
--    self->private_impl.choosy_filter_3 = (
--        &wuffs_png__decoder__filter_3_distance_3_fallback);
--    self->private_impl.choosy_filter_4 = (
--#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--        wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_4_distance_3_arm_neon :
--#endif
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_4_distance_3_x86_sse42 :
--#endif
--        &wuffs_png__decoder__filter_4_distance_3_fallback);
--  } else if (self->private_impl.f_filter_distance == 4u) {
--    self->private_impl.choosy_filter_1 = (
--#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--        wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_1_distance_4_arm_neon :
--#endif
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_1_distance_4_x86_sse42 :
--#endif
--        &wuffs_png__decoder__filter_1_distance_4_fallback);
--    self->private_impl.choosy_filter_3 = (
--#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--        wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_3_distance_4_arm_neon :
--#endif
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_3_distance_4_x86_sse42 :
--#endif
--        &wuffs_png__decoder__filter_3_distance_4_fallback);
--    self->private_impl.choosy_filter_4 = (
--#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
--        wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_4_distance_4_arm_neon :
--#endif
--#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
--        wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_4_distance_4_x86_sse42 :
--#endif
--        &wuffs_png__decoder__filter_4_distance_4_fallback);
-+wuffs_sha256__hasher__up(
-+    wuffs_sha256__hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-+  wuffs_base__slice_u8 v_p = {0};
-+  uint32_t v_w[64] = {0};
-+  uint32_t v_w2 = 0;
-+  uint32_t v_w15 = 0;
-+  uint32_t v_s0 = 0;
-+  uint32_t v_s1 = 0;
-+  uint32_t v_t1 = 0;
-+  uint32_t v_t2 = 0;
-+  uint32_t v_a = 0;
-+  uint32_t v_b = 0;
-+  uint32_t v_c = 0;
-+  uint32_t v_d = 0;
-+  uint32_t v_e = 0;
-+  uint32_t v_f = 0;
-+  uint32_t v_g = 0;
-+  uint32_t v_h = 0;
-+  uint32_t v_i = 0;
-+  uint32_t v_buf_len = 0;
-+
-+  v_a = self->private_impl.f_h0;
-+  v_b = self->private_impl.f_h1;
-+  v_c = self->private_impl.f_h2;
-+  v_d = self->private_impl.f_h3;
-+  v_e = self->private_impl.f_h4;
-+  v_f = self->private_impl.f_h5;
-+  v_g = self->private_impl.f_h6;
-+  v_h = self->private_impl.f_h7;
-+  {
-+    wuffs_base__slice_u8 i_slice_p = a_x;
-+    v_p.ptr = i_slice_p.ptr;
-+    v_p.len = 64;
-+    const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 64) * 64));
-+    while (v_p.ptr < i_end0_p) {
-+      v_w[0u] = ((((uint32_t)(v_p.ptr[0u])) << 24u) |
-+          (((uint32_t)(v_p.ptr[1u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[2u])) << 8u) |
-+          ((uint32_t)(v_p.ptr[3u])));
-+      v_w[1u] = ((((uint32_t)(v_p.ptr[4u])) << 24u) |
-+          (((uint32_t)(v_p.ptr[5u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[6u])) << 8u) |
-+          ((uint32_t)(v_p.ptr[7u])));
-+      v_w[2u] = ((((uint32_t)(v_p.ptr[8u])) << 24u) |
-+          (((uint32_t)(v_p.ptr[9u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[10u])) << 8u) |
-+          ((uint32_t)(v_p.ptr[11u])));
-+      v_w[3u] = ((((uint32_t)(v_p.ptr[12u])) << 24u) |
-+          (((uint32_t)(v_p.ptr[13u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[14u])) << 8u) |
-+          ((uint32_t)(v_p.ptr[15u])));
-+      v_w[4u] = ((((uint32_t)(v_p.ptr[16u])) << 24u) |
-+          (((uint32_t)(v_p.ptr[17u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[18u])) << 8u) |
-+          ((uint32_t)(v_p.ptr[19u])));
-+      v_w[5u] = ((((uint32_t)(v_p.ptr[20u])) << 24u) |
-+          (((uint32_t)(v_p.ptr[21u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[22u])) << 8u) |
-+          ((uint32_t)(v_p.ptr[23u])));
-+      v_w[6u] = ((((uint32_t)(v_p.ptr[24u])) << 24u) |
-+          (((uint32_t)(v_p.ptr[25u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[26u])) << 8u) |
-+          ((uint32_t)(v_p.ptr[27u])));
-+      v_w[7u] = ((((uint32_t)(v_p.ptr[28u])) << 24u) |
-+          (((uint32_t)(v_p.ptr[29u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[30u])) << 8u) |
-+          ((uint32_t)(v_p.ptr[31u])));
-+      v_w[8u] = ((((uint32_t)(v_p.ptr[32u])) << 24u) |
-+          (((uint32_t)(v_p.ptr[33u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[34u])) << 8u) |
-+          ((uint32_t)(v_p.ptr[35u])));
-+      v_w[9u] = ((((uint32_t)(v_p.ptr[36u])) << 24u) |
-+          (((uint32_t)(v_p.ptr[37u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[38u])) << 8u) |
-+          ((uint32_t)(v_p.ptr[39u])));
-+      v_w[10u] = ((((uint32_t)(v_p.ptr[40u])) << 24u) |
-+          (((uint32_t)(v_p.ptr[41u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[42u])) << 8u) |
-+          ((uint32_t)(v_p.ptr[43u])));
-+      v_w[11u] = ((((uint32_t)(v_p.ptr[44u])) << 24u) |
-+          (((uint32_t)(v_p.ptr[45u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[46u])) << 8u) |
-+          ((uint32_t)(v_p.ptr[47u])));
-+      v_w[12u] = ((((uint32_t)(v_p.ptr[48u])) << 24u) |
-+          (((uint32_t)(v_p.ptr[49u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[50u])) << 8u) |
-+          ((uint32_t)(v_p.ptr[51u])));
-+      v_w[13u] = ((((uint32_t)(v_p.ptr[52u])) << 24u) |
-+          (((uint32_t)(v_p.ptr[53u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[54u])) << 8u) |
-+          ((uint32_t)(v_p.ptr[55u])));
-+      v_w[14u] = ((((uint32_t)(v_p.ptr[56u])) << 24u) |
-+          (((uint32_t)(v_p.ptr[57u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[58u])) << 8u) |
-+          ((uint32_t)(v_p.ptr[59u])));
-+      v_w[15u] = ((((uint32_t)(v_p.ptr[60u])) << 24u) |
-+          (((uint32_t)(v_p.ptr[61u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[62u])) << 8u) |
-+          ((uint32_t)(v_p.ptr[63u])));
-+      v_i = 16u;
-+      while (v_i < 64u) {
-+        v_w2 = v_w[(v_i - 2u)];
-+        v_s1 = ((v_w2 >> 10u) ^ (((uint32_t)(v_w2 << 15u)) | (v_w2 >> 17u)) ^ (((uint32_t)(v_w2 << 13u)) | (v_w2 >> 19u)));
-+        v_w15 = v_w[(v_i - 15u)];
-+        v_s0 = ((v_w15 >> 3u) ^ (((uint32_t)(v_w15 << 25u)) | (v_w15 >> 7u)) ^ (((uint32_t)(v_w15 << 14u)) | (v_w15 >> 18u)));
-+        v_w[v_i] = ((uint32_t)(((uint32_t)(((uint32_t)(v_s1 + v_w[(v_i - 7u)])) + v_s0)) + v_w[(v_i - 16u)]));
-+        v_i += 1u;
-+      }
-+      v_i = 0u;
-+      while (v_i < 64u) {
-+        v_t1 = v_h;
-+        v_t1 += ((((uint32_t)(v_e << 26u)) | (v_e >> 6u)) ^ (((uint32_t)(v_e << 21u)) | (v_e >> 11u)) ^ (((uint32_t)(v_e << 7u)) | (v_e >> 25u)));
-+        v_t1 += ((v_e & v_f) ^ ((4294967295u ^ v_e) & v_g));
-+        v_t1 += WUFFS_SHA256__K[v_i];
-+        v_t1 += v_w[v_i];
-+        v_t2 = ((((uint32_t)(v_a << 30u)) | (v_a >> 2u)) ^ (((uint32_t)(v_a << 19u)) | (v_a >> 13u)) ^ (((uint32_t)(v_a << 10u)) | (v_a >> 22u)));
-+        v_t2 += ((v_a & v_b) ^ (v_a & v_c) ^ (v_b & v_c));
-+        v_h = v_g;
-+        v_g = v_f;
-+        v_f = v_e;
-+        v_e = ((uint32_t)(v_d + v_t1));
-+        v_d = v_c;
-+        v_c = v_b;
-+        v_b = v_a;
-+        v_a = ((uint32_t)(v_t1 + v_t2));
-+        v_i += 1u;
-+      }
-+      v_a += self->private_impl.f_h0;
-+      self->private_impl.f_h0 = v_a;
-+      v_b += self->private_impl.f_h1;
-+      self->private_impl.f_h1 = v_b;
-+      v_c += self->private_impl.f_h2;
-+      self->private_impl.f_h2 = v_c;
-+      v_d += self->private_impl.f_h3;
-+      self->private_impl.f_h3 = v_d;
-+      v_e += self->private_impl.f_h4;
-+      self->private_impl.f_h4 = v_e;
-+      v_f += self->private_impl.f_h5;
-+      self->private_impl.f_h5 = v_f;
-+      v_g += self->private_impl.f_h6;
-+      self->private_impl.f_h6 = v_g;
-+      v_h += self->private_impl.f_h7;
-+      self->private_impl.f_h7 = v_h;
-+      v_p.ptr += 64;
-+    }
-+    v_p.len = 1;
-+    const uint8_t* i_end1_p = wuffs_private_impl__ptr_u8_plus_len(i_slice_p.ptr, i_slice_p.len);
-+    while (v_p.ptr < i_end1_p) {
-+      self->private_impl.f_buf_data[v_buf_len] = v_p.ptr[0u];
-+      v_buf_len = ((v_buf_len + 1u) & 63u);
-+      v_p.ptr += 1;
-+    }
-+    v_p.len = 0;
-   }
-+  self->private_impl.f_buf_len = ((uint32_t)((((uint64_t)(a_x.len)) & 63u)));
-   return wuffs_base__make_empty_struct();
- }
- 
--// -------- func png.decoder.decode_other_chunk
-+// -------- func sha256.hasher.checksum_bitvec256
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__decode_other_chunk(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src,
--    bool a_framy) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__bitvec256
-+wuffs_sha256__hasher__checksum_bitvec256(
-+    const wuffs_sha256__hasher* self) {
-+  if (!self) {
-+    return wuffs_base__utility__make_bitvec256(0u, 0u, 0u, 0u);
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__make_bitvec256(0u, 0u, 0u, 0u);
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_other_chunk[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+  uint32_t v_buf_len = 0;
-+  uint8_t v_buf_data[64] = {0};
-+  uint64_t v_length_in_bits = 0;
-+  uint32_t v_w[64] = {0};
-+  uint32_t v_w2 = 0;
-+  uint32_t v_w15 = 0;
-+  uint32_t v_s0 = 0;
-+  uint32_t v_s1 = 0;
-+  uint32_t v_t1 = 0;
-+  uint32_t v_t2 = 0;
-+  uint32_t v_h0 = 0;
-+  uint32_t v_h1 = 0;
-+  uint32_t v_h2 = 0;
-+  uint32_t v_h3 = 0;
-+  uint32_t v_h4 = 0;
-+  uint32_t v_h5 = 0;
-+  uint32_t v_h6 = 0;
-+  uint32_t v_h7 = 0;
-+  uint32_t v_a = 0;
-+  uint32_t v_b = 0;
-+  uint32_t v_c = 0;
-+  uint32_t v_d = 0;
-+  uint32_t v_e = 0;
-+  uint32_t v_f = 0;
-+  uint32_t v_g = 0;
-+  uint32_t v_h = 0;
-+  uint32_t v_i = 0;
-+  bool v_final_block = false;
- 
--    if ((self->private_impl.f_chunk_type == 1163152464u) &&  ! a_framy) {
--      if (self->private_impl.f_seen_plte) {
--        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--        goto exit;
--      } else if (self->private_impl.f_color_type == 3u) {
--        if (a_src) {
--          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--        }
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--        status = wuffs_png__decoder__decode_plte(self, a_src);
--        if (a_src) {
--          iop_a_src = a_src->data.ptr + a_src->meta.ri;
--        }
--        if (status.repr) {
--          goto suspend;
--        }
--      } else if ((self->private_impl.f_color_type == 2u) || (self->private_impl.f_color_type == 6u)) {
--      } else {
--        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--        goto exit;
--      }
--      self->private_impl.f_seen_plte = true;
--    } else if ((self->private_impl.f_chunk_type & 32u) == 0u) {
--      if (self->private_impl.f_chunk_type != 1413563465u) {
--        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--        goto exit;
--      }
-+  v_i = 0u;
-+  while (v_i < 64u) {
-+    v_buf_data[v_i] = self->private_impl.f_buf_data[v_i];
-+    v_i += 1u;
-+  }
-+  v_buf_len = (self->private_impl.f_buf_len & 63u);
-+  if (v_buf_len < 56u) {
-+    v_buf_data[v_buf_len] = 128u;
-+    v_buf_len += 1u;
-+    while (v_buf_len < 56u) {
-+      v_buf_data[v_buf_len] = 0u;
-+      v_buf_len += 1u;
-     }
--    if (self->private_impl.f_chunk_type == 1716082789u) {
--      if (self->private_impl.f_report_metadata_exif) {
--        if (self->private_impl.f_seen_exif) {
--          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--          goto exit;
--        }
--        if (a_src) {
--          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--        }
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--        status = wuffs_png__decoder__decode_exif(self, a_src);
--        if (a_src) {
--          iop_a_src = a_src->data.ptr + a_src->meta.ri;
--        }
--        if (status.repr) {
--          goto suspend;
--        }
--        self->private_impl.f_seen_exif = true;
--      }
--    } else if ((self->private_impl.f_chunk_type == 1951945833u) || (self->private_impl.f_chunk_type == 1951942004u) || (self->private_impl.f_chunk_type == 1951945850u)) {
--      if (self->private_impl.f_report_metadata_kvp) {
--        self->private_impl.f_metadata_flavor = 4u;
--        self->private_impl.f_metadata_fourcc = 1263947851u;
--        self->private_impl.f_metadata_x = 0u;
--        self->private_impl.f_metadata_y = 0u;
--        self->private_impl.f_metadata_z = 0u;
--      }
--    } else if ( ! a_framy) {
--      if (self->private_impl.f_chunk_type == 1280598881u) {
--        if (self->private_impl.f_seen_actl) {
--          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--          goto exit;
--        }
--        if (a_src) {
--          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--        }
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--        status = wuffs_png__decoder__decode_actl(self, a_src);
--        if (a_src) {
--          iop_a_src = a_src->data.ptr + a_src->meta.ri;
--        }
--        if (status.repr) {
--          goto suspend;
--        }
--        self->private_impl.f_seen_actl = true;
--      } else if (self->private_impl.f_chunk_type == 1297238115u) {
--        if (self->private_impl.f_report_metadata_chrm) {
--          if (self->private_impl.f_seen_chrm) {
--            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--            goto exit;
--          }
--          if (a_src) {
--            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--          }
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--          status = wuffs_png__decoder__decode_chrm(self, a_src);
--          if (a_src) {
--            iop_a_src = a_src->data.ptr + a_src->meta.ri;
--          }
--          if (status.repr) {
--            goto suspend;
--          }
--          self->private_impl.f_seen_chrm = true;
--        }
--      } else if (self->private_impl.f_chunk_type == 1280598886u) {
--        if (self->private_impl.f_seen_fctl) {
--          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--          goto exit;
--        }
--        if (a_src) {
--          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--        }
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--        status = wuffs_png__decoder__decode_fctl(self, a_src);
--        if (a_src) {
--          iop_a_src = a_src->data.ptr + a_src->meta.ri;
--        }
--        if (status.repr) {
--          goto suspend;
--        }
--        self->private_impl.f_seen_fctl = true;
--      } else if (self->private_impl.f_chunk_type == 1095582055u) {
--        if (self->private_impl.f_report_metadata_gama) {
--          if (self->private_impl.f_seen_gama) {
--            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--            goto exit;
--          }
--          if (a_src) {
--            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--          }
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--          status = wuffs_png__decoder__decode_gama(self, a_src);
--          if (a_src) {
--            iop_a_src = a_src->data.ptr + a_src->meta.ri;
--          }
--          if (status.repr) {
--            goto suspend;
--          }
--          self->private_impl.f_seen_gama = true;
--        }
--      } else if (self->private_impl.f_chunk_type == 1346585449u) {
--        if (self->private_impl.f_report_metadata_iccp) {
--          if (self->private_impl.f_seen_iccp) {
--            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--            goto exit;
--          }
--          if (a_src) {
--            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--          }
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
--          status = wuffs_png__decoder__decode_iccp(self, a_src);
--          if (a_src) {
--            iop_a_src = a_src->data.ptr + a_src->meta.ri;
--          }
--          if (status.repr) {
--            goto suspend;
--          }
--          self->private_impl.f_seen_iccp = true;
--        }
--      } else if (self->private_impl.f_chunk_type == 1111970419u) {
--        if (self->private_impl.f_report_metadata_srgb) {
--          if (self->private_impl.f_seen_srgb) {
--            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--            goto exit;
--          }
--          if (a_src) {
--            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--          }
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
--          status = wuffs_png__decoder__decode_srgb(self, a_src);
--          if (a_src) {
--            iop_a_src = a_src->data.ptr + a_src->meta.ri;
--          }
--          if (status.repr) {
--            goto suspend;
--          }
--          self->private_impl.f_seen_srgb = true;
--        }
--      } else if (self->private_impl.f_chunk_type == 1397641844u) {
--        if (self->private_impl.f_seen_trns || (self->private_impl.f_color_type > 3u) || ((self->private_impl.f_color_type == 3u) &&  ! self->private_impl.f_seen_plte)) {
--          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--          goto exit;
--        }
--        if (a_src) {
--          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--        }
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
--        status = wuffs_png__decoder__decode_trns(self, a_src);
--        if (a_src) {
--          iop_a_src = a_src->data.ptr + a_src->meta.ri;
--        }
--        if (status.repr) {
--          goto suspend;
--        }
--        self->private_impl.f_seen_trns = true;
--      }
-+    v_final_block = true;
-+  } else {
-+    v_buf_data[v_buf_len] = 128u;
-+    v_buf_len += 1u;
-+    while (v_buf_len < 64u) {
-+      v_buf_data[v_buf_len] = 0u;
-+      v_buf_len += 1u;
-+    }
-+  }
-+  v_h0 = self->private_impl.f_h0;
-+  v_a = v_h0;
-+  v_h1 = self->private_impl.f_h1;
-+  v_b = v_h1;
-+  v_h2 = self->private_impl.f_h2;
-+  v_c = v_h2;
-+  v_h3 = self->private_impl.f_h3;
-+  v_d = v_h3;
-+  v_h4 = self->private_impl.f_h4;
-+  v_e = v_h4;
-+  v_h5 = self->private_impl.f_h5;
-+  v_f = v_h5;
-+  v_h6 = self->private_impl.f_h6;
-+  v_g = v_h6;
-+  v_h7 = self->private_impl.f_h7;
-+  v_h = v_h7;
-+  while (true) {
-+    if (v_final_block) {
-+      v_length_in_bits = ((uint64_t)(self->private_impl.f_length_modulo_u64 * 8u));
-+      v_buf_data[56u] = ((uint8_t)((v_length_in_bits >> 56u)));
-+      v_buf_data[57u] = ((uint8_t)((v_length_in_bits >> 48u)));
-+      v_buf_data[58u] = ((uint8_t)((v_length_in_bits >> 40u)));
-+      v_buf_data[59u] = ((uint8_t)((v_length_in_bits >> 32u)));
-+      v_buf_data[60u] = ((uint8_t)((v_length_in_bits >> 24u)));
-+      v_buf_data[61u] = ((uint8_t)((v_length_in_bits >> 16u)));
-+      v_buf_data[62u] = ((uint8_t)((v_length_in_bits >> 8u)));
-+      v_buf_data[63u] = ((uint8_t)(v_length_in_bits));
-+    }
-+    v_w[0u] = ((((uint32_t)(v_buf_data[0u])) << 24u) |
-+        (((uint32_t)(v_buf_data[1u])) << 16u) |
-+        (((uint32_t)(v_buf_data[2u])) << 8u) |
-+        ((uint32_t)(v_buf_data[3u])));
-+    v_w[1u] = ((((uint32_t)(v_buf_data[4u])) << 24u) |
-+        (((uint32_t)(v_buf_data[5u])) << 16u) |
-+        (((uint32_t)(v_buf_data[6u])) << 8u) |
-+        ((uint32_t)(v_buf_data[7u])));
-+    v_w[2u] = ((((uint32_t)(v_buf_data[8u])) << 24u) |
-+        (((uint32_t)(v_buf_data[9u])) << 16u) |
-+        (((uint32_t)(v_buf_data[10u])) << 8u) |
-+        ((uint32_t)(v_buf_data[11u])));
-+    v_w[3u] = ((((uint32_t)(v_buf_data[12u])) << 24u) |
-+        (((uint32_t)(v_buf_data[13u])) << 16u) |
-+        (((uint32_t)(v_buf_data[14u])) << 8u) |
-+        ((uint32_t)(v_buf_data[15u])));
-+    v_w[4u] = ((((uint32_t)(v_buf_data[16u])) << 24u) |
-+        (((uint32_t)(v_buf_data[17u])) << 16u) |
-+        (((uint32_t)(v_buf_data[18u])) << 8u) |
-+        ((uint32_t)(v_buf_data[19u])));
-+    v_w[5u] = ((((uint32_t)(v_buf_data[20u])) << 24u) |
-+        (((uint32_t)(v_buf_data[21u])) << 16u) |
-+        (((uint32_t)(v_buf_data[22u])) << 8u) |
-+        ((uint32_t)(v_buf_data[23u])));
-+    v_w[6u] = ((((uint32_t)(v_buf_data[24u])) << 24u) |
-+        (((uint32_t)(v_buf_data[25u])) << 16u) |
-+        (((uint32_t)(v_buf_data[26u])) << 8u) |
-+        ((uint32_t)(v_buf_data[27u])));
-+    v_w[7u] = ((((uint32_t)(v_buf_data[28u])) << 24u) |
-+        (((uint32_t)(v_buf_data[29u])) << 16u) |
-+        (((uint32_t)(v_buf_data[30u])) << 8u) |
-+        ((uint32_t)(v_buf_data[31u])));
-+    v_w[8u] = ((((uint32_t)(v_buf_data[32u])) << 24u) |
-+        (((uint32_t)(v_buf_data[33u])) << 16u) |
-+        (((uint32_t)(v_buf_data[34u])) << 8u) |
-+        ((uint32_t)(v_buf_data[35u])));
-+    v_w[9u] = ((((uint32_t)(v_buf_data[36u])) << 24u) |
-+        (((uint32_t)(v_buf_data[37u])) << 16u) |
-+        (((uint32_t)(v_buf_data[38u])) << 8u) |
-+        ((uint32_t)(v_buf_data[39u])));
-+    v_w[10u] = ((((uint32_t)(v_buf_data[40u])) << 24u) |
-+        (((uint32_t)(v_buf_data[41u])) << 16u) |
-+        (((uint32_t)(v_buf_data[42u])) << 8u) |
-+        ((uint32_t)(v_buf_data[43u])));
-+    v_w[11u] = ((((uint32_t)(v_buf_data[44u])) << 24u) |
-+        (((uint32_t)(v_buf_data[45u])) << 16u) |
-+        (((uint32_t)(v_buf_data[46u])) << 8u) |
-+        ((uint32_t)(v_buf_data[47u])));
-+    v_w[12u] = ((((uint32_t)(v_buf_data[48u])) << 24u) |
-+        (((uint32_t)(v_buf_data[49u])) << 16u) |
-+        (((uint32_t)(v_buf_data[50u])) << 8u) |
-+        ((uint32_t)(v_buf_data[51u])));
-+    v_w[13u] = ((((uint32_t)(v_buf_data[52u])) << 24u) |
-+        (((uint32_t)(v_buf_data[53u])) << 16u) |
-+        (((uint32_t)(v_buf_data[54u])) << 8u) |
-+        ((uint32_t)(v_buf_data[55u])));
-+    v_w[14u] = ((((uint32_t)(v_buf_data[56u])) << 24u) |
-+        (((uint32_t)(v_buf_data[57u])) << 16u) |
-+        (((uint32_t)(v_buf_data[58u])) << 8u) |
-+        ((uint32_t)(v_buf_data[59u])));
-+    v_w[15u] = ((((uint32_t)(v_buf_data[60u])) << 24u) |
-+        (((uint32_t)(v_buf_data[61u])) << 16u) |
-+        (((uint32_t)(v_buf_data[62u])) << 8u) |
-+        ((uint32_t)(v_buf_data[63u])));
-+    v_i = 16u;
-+    while (v_i < 64u) {
-+      v_w2 = v_w[(v_i - 2u)];
-+      v_s1 = ((v_w2 >> 10u) ^ (((uint32_t)(v_w2 << 15u)) | (v_w2 >> 17u)) ^ (((uint32_t)(v_w2 << 13u)) | (v_w2 >> 19u)));
-+      v_w15 = v_w[(v_i - 15u)];
-+      v_s0 = ((v_w15 >> 3u) ^ (((uint32_t)(v_w15 << 25u)) | (v_w15 >> 7u)) ^ (((uint32_t)(v_w15 << 14u)) | (v_w15 >> 18u)));
-+      v_w[v_i] = ((uint32_t)(((uint32_t)(((uint32_t)(v_s1 + v_w[(v_i - 7u)])) + v_s0)) + v_w[(v_i - 16u)]));
-+      v_i += 1u;
-     }
--    if (self->private_impl.f_metadata_fourcc == 0u) {
--      self->private_data.s_decode_other_chunk[0].scratch = self->private_impl.f_chunk_length;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
--      if (self->private_data.s_decode_other_chunk[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--        self->private_data.s_decode_other_chunk[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--        iop_a_src = io2_a_src;
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      iop_a_src += self->private_data.s_decode_other_chunk[0].scratch;
-+    v_i = 0u;
-+    while (v_i < 64u) {
-+      v_t1 = v_h;
-+      v_t1 += ((((uint32_t)(v_e << 26u)) | (v_e >> 6u)) ^ (((uint32_t)(v_e << 21u)) | (v_e >> 11u)) ^ (((uint32_t)(v_e << 7u)) | (v_e >> 25u)));
-+      v_t1 += ((v_e & v_f) ^ ((4294967295u ^ v_e) & v_g));
-+      v_t1 += WUFFS_SHA256__K[v_i];
-+      v_t1 += v_w[v_i];
-+      v_t2 = ((((uint32_t)(v_a << 30u)) | (v_a >> 2u)) ^ (((uint32_t)(v_a << 19u)) | (v_a >> 13u)) ^ (((uint32_t)(v_a << 10u)) | (v_a >> 22u)));
-+      v_t2 += ((v_a & v_b) ^ (v_a & v_c) ^ (v_b & v_c));
-+      v_h = v_g;
-+      v_g = v_f;
-+      v_f = v_e;
-+      v_e = ((uint32_t)(v_d + v_t1));
-+      v_d = v_c;
-+      v_c = v_b;
-+      v_b = v_a;
-+      v_a = ((uint32_t)(v_t1 + v_t2));
-+      v_i += 1u;
-+    }
-+    v_a += v_h0;
-+    v_b += v_h1;
-+    v_c += v_h2;
-+    v_d += v_h3;
-+    v_e += v_h4;
-+    v_f += v_h5;
-+    v_g += v_h6;
-+    v_h += v_h7;
-+    if (v_final_block) {
-+      break;
-+    }
-+    v_final_block = true;
-+    v_h0 = v_a;
-+    v_h1 = v_b;
-+    v_h2 = v_c;
-+    v_h3 = v_d;
-+    v_h4 = v_e;
-+    v_h5 = v_f;
-+    v_h6 = v_g;
-+    v_h7 = v_h;
-+    v_buf_len = 0u;
-+    while (v_buf_len < 56u) {
-+      v_buf_data[v_buf_len] = 0u;
-+      v_buf_len += 1u;
-     }
--
--    goto ok;
--    ok:
--    self->private_impl.p_decode_other_chunk[0] = 0;
--    goto exit;
-   }
-+  return wuffs_base__utility__make_bitvec256(
-+      (((uint64_t)(v_h)) | (((uint64_t)(v_g)) << 32u)),
-+      (((uint64_t)(v_f)) | (((uint64_t)(v_e)) << 32u)),
-+      (((uint64_t)(v_d)) | (((uint64_t)(v_c)) << 32u)),
-+      (((uint64_t)(v_b)) | (((uint64_t)(v_a)) << 32u)));
-+}
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_other_chunk[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__SHA256)
- 
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA)
- 
--  return status;
--}
-+// ---------------- Status Codes Implementations
- 
--// -------- func png.decoder.decode_actl
-+const char wuffs_tga__error__bad_header[] = "#tga: bad header";
-+const char wuffs_tga__error__bad_run_length_encoding[] = "#tga: bad run length encoding";
-+const char wuffs_tga__error__truncated_input[] = "#tga: truncated input";
-+const char wuffs_tga__error__unsupported_tga_file[] = "#tga: unsupported TGA file";
-+
-+// ---------------- Private Consts
-+
-+// ---------------- Private Initializer Prototypes
-+
-+// ---------------- Private Function Prototypes
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_png__decoder__decode_actl(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+wuffs_tga__decoder__do_decode_image_config(
-+    wuffs_tga__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
- 
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_tga__decoder__do_decode_frame_config(
-+    wuffs_tga__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_tga__decoder__do_decode_frame(
-+    wuffs_tga__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts);
-+
-+// ---------------- VTables
-+
-+const wuffs_base__image_decoder__func_ptrs
-+wuffs_tga__decoder__func_ptrs_for__wuffs_base__image_decoder = {
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__pixel_buffer*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__pixel_blend,
-+      wuffs_base__slice_u8,
-+      wuffs_base__decode_frame_options*))(&wuffs_tga__decoder__decode_frame),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__frame_config*,
-+      wuffs_base__io_buffer*))(&wuffs_tga__decoder__decode_frame_config),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__image_config*,
-+      wuffs_base__io_buffer*))(&wuffs_tga__decoder__decode_image_config),
-+  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_tga__decoder__frame_dirty_rect),
-+  (uint64_t(*)(const void*,
-+      uint32_t))(&wuffs_tga__decoder__get_quirk),
-+  (uint32_t(*)(const void*))(&wuffs_tga__decoder__num_animation_loops),
-+  (uint64_t(*)(const void*))(&wuffs_tga__decoder__num_decoded_frame_configs),
-+  (uint64_t(*)(const void*))(&wuffs_tga__decoder__num_decoded_frames),
-+  (wuffs_base__status(*)(void*,
-+      uint64_t,
-+      uint64_t))(&wuffs_tga__decoder__restart_frame),
-+  (wuffs_base__status(*)(void*,
-+      uint32_t,
-+      uint64_t))(&wuffs_tga__decoder__set_quirk),
-+  (wuffs_base__empty_struct(*)(void*,
-+      uint32_t,
-+      bool))(&wuffs_tga__decoder__set_report_metadata),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__more_information*,
-+      wuffs_base__io_buffer*))(&wuffs_tga__decoder__tell_me_more),
-+  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_tga__decoder__workbuf_len),
-+};
-+
-+// ---------------- Initializer Implementations
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_tga__decoder__initialize(
-+    wuffs_tga__decoder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options){
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (sizeof(*self) != sizeof_star_self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  }
-+  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
-+      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+  }
-+
-+  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
-+    // The whole point of this if-check is to detect an uninitialized *self.
-+    // We disable the warning on GCC. Clang-5.0 does not have this warning.
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+#endif
-+    if (self->private_impl.magic != 0) {
-+      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+    }
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+  } else {
-+    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
-+      memset(self, 0, sizeof(*self));
-+      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-+    } else {
-+      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+    }
-+  }
-+
-+  self->private_impl.magic = WUFFS_BASE__MAGIC;
-+  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
-+      wuffs_base__image_decoder__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
-+      (const void*)(&wuffs_tga__decoder__func_ptrs_for__wuffs_base__image_decoder);
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+wuffs_tga__decoder*
-+wuffs_tga__decoder__alloc(void) {
-+  wuffs_tga__decoder* x =
-+      (wuffs_tga__decoder*)(calloc(1, sizeof(wuffs_tga__decoder)));
-+  if (!x) {
-+    return NULL;
-+  }
-+  if (wuffs_tga__decoder__initialize(
-+      x, sizeof(wuffs_tga__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+    free(x);
-+    return NULL;
-   }
-+  return x;
-+}
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_actl[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+size_t
-+sizeof__wuffs_tga__decoder(void) {
-+  return sizeof(wuffs_tga__decoder);
-+}
- 
--    if (self->private_impl.f_chunk_length != 8u) {
--      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--      goto exit;
--    } else if (self->private_impl.f_interlace_pass > 0u) {
--      status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
--      goto exit;
--    }
--    self->private_impl.f_chunk_length = 0u;
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      uint32_t t_0;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--        iop_a_src += 4;
--      } else {
--        self->private_data.s_decode_actl[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_decode_actl[0].scratch;
--          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
--          *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
--          if (num_bits_0 == 24) {
--            t_0 = ((uint32_t)(*scratch >> 32));
--            break;
--          }
--          num_bits_0 += 8u;
--          *scratch |= ((uint64_t)(num_bits_0));
--        }
--      }
--      self->private_impl.f_num_animation_frames_value = t_0;
--    }
--    if (self->private_impl.f_num_animation_frames_value == 0u) {
--      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--      goto exit;
--    }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--      uint32_t t_1;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--        iop_a_src += 4;
--      } else {
--        self->private_data.s_decode_actl[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_decode_actl[0].scratch;
--          uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
--          *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
--          if (num_bits_1 == 24) {
--            t_1 = ((uint32_t)(*scratch >> 32));
--            break;
--          }
--          num_bits_1 += 8u;
--          *scratch |= ((uint64_t)(num_bits_1));
--        }
--      }
--      self->private_impl.f_num_animation_loops_value = t_1;
--    }
-+// ---------------- Function Implementations
- 
--    goto ok;
--    ok:
--    self->private_impl.p_decode_actl[0] = 0;
--    goto exit;
-+// -------- func tga.decoder.get_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_tga__decoder__get_quirk(
-+    const wuffs_tga__decoder* self,
-+    uint32_t a_key) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-   }
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_actl[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  return 0u;
-+}
- 
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+// -------- func tga.decoder.set_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_tga__decoder__set_quirk(
-+    wuffs_tga__decoder* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-   }
- 
--  return status;
-+  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
- }
- 
--// -------- func png.decoder.decode_chrm
-+// -------- func tga.decoder.decode_image_config
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__decode_chrm(
--    wuffs_png__decoder* self,
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_tga__decoder__decode_image_config(
-+    wuffs_tga__decoder* self,
-+    wuffs_base__image_config* a_dst,
-     wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 1)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint64_t v_u = 0;
--
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_chrm[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_image_config;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if (self->private_impl.f_chunk_length != 32u) {
--      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--      goto exit;
--    }
--    self->private_impl.f_chunk_length = 0u;
--    self->private_impl.f_metadata_flavor = 5u;
--    self->private_impl.f_metadata_fourcc = 1128813133u;
--    self->private_impl.f_metadata_x = 0u;
--    self->private_impl.f_metadata_y = 0u;
--    self->private_impl.f_metadata_z = 0u;
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      uint64_t t_0;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_0 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
--        iop_a_src += 4;
--      } else {
--        self->private_data.s_decode_chrm[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
--          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
--          *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
--          if (num_bits_0 == 24) {
--            t_0 = ((uint64_t)(*scratch >> 32));
--            break;
--          }
--          num_bits_0 += 8u;
--          *scratch |= ((uint64_t)(num_bits_0));
--        }
--      }
--      v_u = t_0;
--    }
--    self->private_impl.f_metadata_x |= ((16777215u & v_u) << 0u);
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--      uint64_t t_1;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_1 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
--        iop_a_src += 4;
--      } else {
--        self->private_data.s_decode_chrm[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
--          uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
--          *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
--          if (num_bits_1 == 24) {
--            t_1 = ((uint64_t)(*scratch >> 32));
--            break;
--          }
--          num_bits_1 += 8u;
--          *scratch |= ((uint64_t)(num_bits_1));
--        }
--      }
--      v_u = t_1;
--    }
--    self->private_impl.f_metadata_x |= ((16777215u & v_u) << 24u);
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--      uint64_t t_2;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_2 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
--        iop_a_src += 4;
--      } else {
--        self->private_data.s_decode_chrm[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
--          uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
--          *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
--          if (num_bits_2 == 24) {
--            t_2 = ((uint64_t)(*scratch >> 32));
--            break;
--          }
--          num_bits_2 += 8u;
--          *scratch |= ((uint64_t)(num_bits_2));
--        }
--      }
--      v_u = t_2;
--    }
--    self->private_impl.f_metadata_x |= ((uint64_t)((16777215u & v_u) << 48u));
--    self->private_impl.f_metadata_y |= ((16777215u & v_u) >> 16u);
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
--      uint64_t t_3;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_3 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
--        iop_a_src += 4;
--      } else {
--        self->private_data.s_decode_chrm[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
--          uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
--          *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
--          if (num_bits_3 == 24) {
--            t_3 = ((uint64_t)(*scratch >> 32));
--            break;
--          }
--          num_bits_3 += 8u;
--          *scratch |= ((uint64_t)(num_bits_3));
--        }
--      }
--      v_u = t_3;
--    }
--    self->private_impl.f_metadata_y |= ((16777215u & v_u) << 8u);
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
--      uint64_t t_4;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_4 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
--        iop_a_src += 4;
--      } else {
--        self->private_data.s_decode_chrm[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
--          uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
--          *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4);
--          if (num_bits_4 == 24) {
--            t_4 = ((uint64_t)(*scratch >> 32));
--            break;
--          }
--          num_bits_4 += 8u;
--          *scratch |= ((uint64_t)(num_bits_4));
--        }
--      }
--      v_u = t_4;
--    }
--    self->private_impl.f_metadata_y |= ((16777215u & v_u) << 32u);
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
--      uint64_t t_5;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_5 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
--        iop_a_src += 4;
--      } else {
--        self->private_data.s_decode_chrm[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
--          uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
--          *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5);
--          if (num_bits_5 == 24) {
--            t_5 = ((uint64_t)(*scratch >> 32));
--            break;
--          }
--          num_bits_5 += 8u;
--          *scratch |= ((uint64_t)(num_bits_5));
--        }
--      }
--      v_u = t_5;
--    }
--    self->private_impl.f_metadata_y |= ((uint64_t)((16777215u & v_u) << 56u));
--    self->private_impl.f_metadata_z |= ((16777215u & v_u) >> 8u);
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
--      uint64_t t_6;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_6 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
--        iop_a_src += 4;
--      } else {
--        self->private_data.s_decode_chrm[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
--          uint32_t num_bits_6 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
--          *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_6);
--          if (num_bits_6 == 24) {
--            t_6 = ((uint64_t)(*scratch >> 32));
--            break;
--          }
--          num_bits_6 += 8u;
--          *scratch |= ((uint64_t)(num_bits_6));
--        }
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_tga__decoder__do_decode_image_config(self, a_dst, a_src);
-+        v_status = t_0;
-       }
--      v_u = t_6;
--    }
--    self->private_impl.f_metadata_z |= ((16777215u & v_u) << 16u);
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
--      uint64_t t_7;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_7 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
--        iop_a_src += 4;
--      } else {
--        self->private_data.s_decode_chrm[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
--          uint32_t num_bits_7 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
--          *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_7);
--          if (num_bits_7 == 24) {
--            t_7 = ((uint64_t)(*scratch >> 32));
--            break;
--          }
--          num_bits_7 += 8u;
--          *scratch |= ((uint64_t)(num_bits_7));
--        }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_tga__error__truncated_input);
-+        goto exit;
-       }
--      v_u = t_7;
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-     }
--    self->private_impl.f_metadata_z |= ((16777215u & v_u) << 40u);
- 
--    goto ok;
-     ok:
--    self->private_impl.p_decode_chrm[0] = 0;
-+    self->private_impl.p_decode_image_config = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_chrm[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
--
--  return status;
--}
--
--// -------- func png.decoder.decode_exif
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__decode_exif(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
--
--  if (self->private_impl.f_chunk_length < 4u) {
--    status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--    goto exit;
--  }
--  self->private_impl.f_metadata_flavor = 3u;
--  self->private_impl.f_metadata_fourcc = 1163413830u;
--  self->private_impl.f_metadata_x = 0u;
--  self->private_impl.f_metadata_y = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
--  self->private_impl.f_metadata_z = wuffs_base__u64__sat_add(self->private_impl.f_metadata_y, ((uint64_t)(self->private_impl.f_chunk_length)));
--  self->private_impl.f_chunk_length = 0u;
-+  self->private_impl.p_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
- 
--  goto ok;
--  ok:
-   goto exit;
-   exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-   }
--
-   return status;
- }
- 
--// -------- func png.decoder.decode_fctl
-+// -------- func tga.decoder.do_decode_image_config
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_png__decoder__decode_fctl(
--    wuffs_png__decoder* self,
-+wuffs_tga__decoder__do_decode_image_config(
-+    wuffs_tga__decoder* self,
-+    wuffs_base__image_config* a_dst,
-     wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint32_t v_x0 = 0;
--  uint32_t v_y0 = 0;
--  uint32_t v_x1 = 0;
--  uint32_t v_y1 = 0;
-+  uint32_t v_c32 = 0;
-+  uint32_t v_c5 = 0;
-+  uint32_t v_i = 0;
- 
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -55899,309 +69341,577 @@ wuffs_png__decoder__decode_fctl(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_fctl[0];
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config;
-   if (coro_susp_point) {
--    v_x0 = self->private_data.s_decode_fctl[0].v_x0;
--    v_x1 = self->private_data.s_decode_fctl[0].v_x1;
--    v_y1 = self->private_data.s_decode_fctl[0].v_y1;
-+    v_i = self->private_data.s_do_decode_image_config.v_i;
-   }
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if (self->private_impl.f_chunk_length != 26u) {
--      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+    if (self->private_impl.f_call_sequence != 0u) {
-+      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-       goto exit;
-     }
--    self->private_impl.f_chunk_length = 0u;
-     {
-       WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      uint32_t t_0;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--        iop_a_src += 4;
--      } else {
--        self->private_data.s_decode_fctl[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch;
--          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
--          *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
--          if (num_bits_0 == 24) {
--            t_0 = ((uint32_t)(*scratch >> 32));
--            break;
--          }
--          num_bits_0 += 8u;
--          *scratch |= ((uint64_t)(num_bits_0));
--        }
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-       }
--      v_x0 = t_0;
-+      uint8_t t_0 = *iop_a_src++;
-+      self->private_impl.f_header_id_length = t_0;
-     }
--    if (v_x0 != self->private_impl.f_next_animation_seq_num) {
--      status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number);
--      goto exit;
--    } else if (self->private_impl.f_next_animation_seq_num >= 4294967295u) {
--      status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_1 = *iop_a_src++;
-+      self->private_impl.f_header_color_map_type = t_1;
-+    }
-+    if (self->private_impl.f_header_color_map_type > 1u) {
-+      status = wuffs_base__make_status(wuffs_tga__error__bad_header);
-       goto exit;
-     }
--    self->private_impl.f_next_animation_seq_num += 1u;
-     {
-       WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--      uint32_t t_1;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--        iop_a_src += 4;
--      } else {
--        self->private_data.s_decode_fctl[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch;
--          uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
--          *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
--          if (num_bits_1 == 24) {
--            t_1 = ((uint32_t)(*scratch >> 32));
--            break;
--          }
--          num_bits_1 += 8u;
--          *scratch |= ((uint64_t)(num_bits_1));
--        }
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-       }
--      v_x1 = t_1;
-+      uint8_t t_2 = *iop_a_src++;
-+      self->private_impl.f_header_image_type = t_2;
-     }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--      uint32_t t_2;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_2 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--        iop_a_src += 4;
--      } else {
--        self->private_data.s_decode_fctl[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch;
--          uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
--          *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
--          if (num_bits_2 == 24) {
--            t_2 = ((uint32_t)(*scratch >> 32));
--            break;
--          }
--          num_bits_2 += 8u;
--          *scratch |= ((uint64_t)(num_bits_2));
--        }
--      }
--      v_y1 = t_2;
-+    if ((self->private_impl.f_header_image_type == 1u) ||
-+        (self->private_impl.f_header_image_type == 2u) ||
-+        (self->private_impl.f_header_image_type == 3u) ||
-+        (self->private_impl.f_header_image_type == 9u) ||
-+        (self->private_impl.f_header_image_type == 10u) ||
-+        (self->private_impl.f_header_image_type == 11u)) {
-+    } else {
-+      status = wuffs_base__make_status(wuffs_tga__error__bad_header);
-+      goto exit;
-     }
-     {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
--      uint32_t t_3;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--        iop_a_src += 4;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+      uint16_t t_3;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+        t_3 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
-+        iop_a_src += 2;
-       } else {
--        self->private_data.s_decode_fctl[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+        self->private_data.s_do_decode_image_config.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-         while (true) {
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch;
--          uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
-+          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+          uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
-           *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
--          if (num_bits_3 == 24) {
--            t_3 = ((uint32_t)(*scratch >> 32));
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
-+          if (num_bits_3 == 8) {
-+            t_3 = ((uint16_t)(*scratch));
-             break;
-           }
-           num_bits_3 += 8u;
--          *scratch |= ((uint64_t)(num_bits_3));
-+          *scratch |= ((uint64_t)(num_bits_3)) << 56;
-         }
-       }
--      v_x0 = t_3;
-+      self->private_impl.f_header_color_map_first_entry_index = t_3;
-     }
-     {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
--      uint32_t t_4;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_4 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--        iop_a_src += 4;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+      uint16_t t_4;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+        t_4 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
-+        iop_a_src += 2;
-       } else {
--        self->private_data.s_decode_fctl[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
-+        self->private_data.s_do_decode_image_config.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-         while (true) {
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch;
--          uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
-+          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+          uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
-           *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4);
--          if (num_bits_4 == 24) {
--            t_4 = ((uint32_t)(*scratch >> 32));
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
-+          if (num_bits_4 == 8) {
-+            t_4 = ((uint16_t)(*scratch));
-             break;
-           }
-           num_bits_4 += 8u;
--          *scratch |= ((uint64_t)(num_bits_4));
-+          *scratch |= ((uint64_t)(num_bits_4)) << 56;
-         }
-       }
--      v_y0 = t_4;
-+      self->private_impl.f_header_color_map_length = t_4;
-     }
--    v_x1 += v_x0;
--    v_y1 += v_y0;
--    if ((v_x0 >= v_x1) ||
--        (v_x0 > self->private_impl.f_width) ||
--        (v_x1 > self->private_impl.f_width) ||
--        (v_y0 >= v_y1) ||
--        (v_y0 > self->private_impl.f_height) ||
--        (v_y1 > self->private_impl.f_height)) {
--      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--      goto exit;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_5 = *iop_a_src++;
-+      self->private_impl.f_header_color_map_entry_size = t_5;
-     }
--    self->private_impl.f_frame_rect_x0 = v_x0;
--    self->private_impl.f_frame_rect_y0 = v_y0;
--    self->private_impl.f_frame_rect_x1 = v_x1;
--    self->private_impl.f_frame_rect_y1 = v_y1;
-+    if (self->private_impl.f_header_color_map_type != 0u) {
-+      if ((self->private_impl.f_header_color_map_first_entry_index != 0u) || (self->private_impl.f_header_color_map_length > 256u)) {
-+        status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file);
-+        goto exit;
-+      } else if ((self->private_impl.f_header_color_map_entry_size != 15u) &&
-+          (self->private_impl.f_header_color_map_entry_size != 16u) &&
-+          (self->private_impl.f_header_color_map_entry_size != 24u) &&
-+          (self->private_impl.f_header_color_map_entry_size != 32u)) {
-+        status = wuffs_base__make_status(wuffs_tga__error__bad_header);
-+        goto exit;
-+      }
-+    } else {
-+      if ((self->private_impl.f_header_color_map_first_entry_index != 0u) || (self->private_impl.f_header_color_map_length != 0u) || (self->private_impl.f_header_color_map_entry_size != 0u)) {
-+        status = wuffs_base__make_status(wuffs_tga__error__bad_header);
-+        goto exit;
-+      }
-+    }
-+    self->private_data.s_do_decode_image_config.scratch = 4u;
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+    if (self->private_data.s_do_decode_image_config.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+      self->private_data.s_do_decode_image_config.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+      iop_a_src = io2_a_src;
-+      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+      goto suspend;
-+    }
-+    iop_a_src += self->private_data.s_do_decode_image_config.scratch;
-     {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
--      uint32_t t_5;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
-+      uint32_t t_6;
-       if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--        t_5 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
-+        t_6 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-         iop_a_src += 2;
-       } else {
--        self->private_data.s_decode_fctl[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
-+        self->private_data.s_do_decode_image_config.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
-         while (true) {
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch;
--          uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
-+          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+          uint32_t num_bits_6 = ((uint32_t)(*scratch >> 56));
-           *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5);
--          if (num_bits_5 == 8) {
--            t_5 = ((uint32_t)(*scratch >> 48));
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_6;
-+          if (num_bits_6 == 8) {
-+            t_6 = ((uint32_t)(*scratch));
-             break;
-           }
--          num_bits_5 += 8u;
--          *scratch |= ((uint64_t)(num_bits_5));
-+          num_bits_6 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_6)) << 56;
-         }
-       }
--      v_x0 = t_5;
-+      self->private_impl.f_width = t_6;
-     }
-     {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
--      uint32_t t_6;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
-+      uint32_t t_7;
-       if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--        t_6 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
-+        t_7 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-         iop_a_src += 2;
-       } else {
--        self->private_data.s_decode_fctl[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
-+        self->private_data.s_do_decode_image_config.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
-         while (true) {
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch;
--          uint32_t num_bits_6 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
-+          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+          uint32_t num_bits_7 = ((uint32_t)(*scratch >> 56));
-           *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_6);
--          if (num_bits_6 == 8) {
--            t_6 = ((uint32_t)(*scratch >> 48));
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_7;
-+          if (num_bits_7 == 8) {
-+            t_7 = ((uint32_t)(*scratch));
-             break;
-           }
--          num_bits_6 += 8u;
--          *scratch |= ((uint64_t)(num_bits_6));
-+          num_bits_7 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_7)) << 56;
-         }
-       }
--      v_x1 = t_6;
--    }
--    if (v_x1 <= 0u) {
--      self->private_impl.f_frame_duration = (((uint64_t)(v_x0)) * 7056000u);
--    } else {
--      self->private_impl.f_frame_duration = ((((uint64_t)(v_x0)) * 705600000u) / ((uint64_t)(v_x1)));
-+      self->private_impl.f_height = t_7;
-     }
-     {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
-       if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-         status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-         goto suspend;
-       }
--      uint32_t t_7 = *iop_a_src++;
--      v_x0 = t_7;
-+      uint8_t t_8 = *iop_a_src++;
-+      self->private_impl.f_header_pixel_depth = t_8;
-     }
--    if (v_x0 == 0u) {
--      self->private_impl.f_frame_disposal = 0u;
--    } else if (v_x0 == 1u) {
--      self->private_impl.f_frame_disposal = 1u;
--    } else if (v_x0 == 2u) {
--      self->private_impl.f_frame_disposal = 2u;
--    } else {
--      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+    if ((self->private_impl.f_header_pixel_depth != 1u) &&
-+        (self->private_impl.f_header_pixel_depth != 8u) &&
-+        (self->private_impl.f_header_pixel_depth != 15u) &&
-+        (self->private_impl.f_header_pixel_depth != 16u) &&
-+        (self->private_impl.f_header_pixel_depth != 24u) &&
-+        (self->private_impl.f_header_pixel_depth != 32u)) {
-+      status = wuffs_base__make_status(wuffs_tga__error__bad_header);
-       goto exit;
-     }
-+    if (((uint8_t)(self->private_impl.f_header_image_type | 8u)) == 9u) {
-+      self->private_impl.f_scratch_bytes_per_pixel = 1u;
-+      self->private_impl.f_src_bytes_per_pixel = 1u;
-+      self->private_impl.f_src_pixfmt = 2164523016u;
-+      self->private_impl.f_opaque = ((self->private_impl.f_header_color_map_entry_size == 15u) || (self->private_impl.f_header_color_map_entry_size == 24u));
-+    } else if (((uint8_t)(self->private_impl.f_header_image_type | 8u)) == 10u) {
-+      if ((self->private_impl.f_header_pixel_depth == 15u) || (self->private_impl.f_header_pixel_depth == 16u)) {
-+        self->private_impl.f_scratch_bytes_per_pixel = 4u;
-+        self->private_impl.f_src_bytes_per_pixel = 0u;
-+        self->private_impl.f_src_pixfmt = 2164295816u;
-+      } else if (self->private_impl.f_header_pixel_depth == 24u) {
-+        self->private_impl.f_scratch_bytes_per_pixel = 3u;
-+        self->private_impl.f_src_bytes_per_pixel = 3u;
-+        self->private_impl.f_src_pixfmt = 2147485832u;
-+        self->private_impl.f_opaque = true;
-+      } else if (self->private_impl.f_header_pixel_depth == 32u) {
-+        self->private_impl.f_scratch_bytes_per_pixel = 4u;
-+        self->private_impl.f_src_bytes_per_pixel = 4u;
-+        self->private_impl.f_src_pixfmt = 2164295816u;
-+      } else {
-+        status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file);
-+        goto exit;
-+      }
-+    } else {
-+      if (self->private_impl.f_header_pixel_depth == 8u) {
-+        self->private_impl.f_scratch_bytes_per_pixel = 1u;
-+        self->private_impl.f_src_bytes_per_pixel = 1u;
-+        self->private_impl.f_src_pixfmt = 536870920u;
-+        self->private_impl.f_opaque = true;
-+      } else {
-+        status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file);
-+        goto exit;
-+      }
-+    }
-     {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
-       if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-         status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-         goto suspend;
-       }
--      uint32_t t_8 = *iop_a_src++;
--      v_x0 = t_8;
--    }
--    if (v_x0 == 0u) {
--      self->private_impl.f_frame_overwrite_instead_of_blend = true;
--    } else if (v_x0 == 1u) {
--      self->private_impl.f_frame_overwrite_instead_of_blend = false;
-+      uint8_t t_9 = *iop_a_src++;
-+      self->private_impl.f_header_image_descriptor = t_9;
-+    }
-+    if (((uint8_t)(self->private_impl.f_header_image_descriptor & 16u)) != 0u) {
-+      status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file);
-+      goto exit;
-+    }
-+    self->private_data.s_do_decode_image_config.scratch = ((uint32_t)(self->private_impl.f_header_id_length));
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
-+    if (self->private_data.s_do_decode_image_config.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+      self->private_data.s_do_decode_image_config.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+      iop_a_src = io2_a_src;
-+      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+      goto suspend;
-+    }
-+    iop_a_src += self->private_data.s_do_decode_image_config.scratch;
-+    if (self->private_impl.f_header_color_map_type != 0u) {
-+      while (v_i < ((uint32_t)(self->private_impl.f_header_color_map_length))) {
-+        if (self->private_impl.f_header_color_map_entry_size == 24u) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(17);
-+            uint32_t t_10;
-+            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
-+              t_10 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
-+              iop_a_src += 3;
-+            } else {
-+              self->private_data.s_do_decode_image_config.scratch = 0;
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(18);
-+              while (true) {
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+                uint32_t num_bits_10 = ((uint32_t)(*scratch >> 56));
-+                *scratch <<= 8;
-+                *scratch >>= 8;
-+                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_10;
-+                if (num_bits_10 == 16) {
-+                  t_10 = ((uint32_t)(*scratch));
-+                  break;
-+                }
-+                num_bits_10 += 8u;
-+                *scratch |= ((uint64_t)(num_bits_10)) << 56;
-+              }
-+            }
-+            v_c32 = t_10;
-+          }
-+          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 0u)] = ((uint8_t)((v_c32 >> 0u)));
-+          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 1u)] = ((uint8_t)((v_c32 >> 8u)));
-+          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 2u)] = ((uint8_t)((v_c32 >> 16u)));
-+          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 3u)] = 255u;
-+        } else if (self->private_impl.f_header_color_map_entry_size == 32u) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(19);
-+            uint32_t t_11;
-+            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+              t_11 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+              iop_a_src += 4;
-+            } else {
-+              self->private_data.s_do_decode_image_config.scratch = 0;
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(20);
-+              while (true) {
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+                uint32_t num_bits_11 = ((uint32_t)(*scratch >> 56));
-+                *scratch <<= 8;
-+                *scratch >>= 8;
-+                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_11;
-+                if (num_bits_11 == 24) {
-+                  t_11 = ((uint32_t)(*scratch));
-+                  break;
-+                }
-+                num_bits_11 += 8u;
-+                *scratch |= ((uint64_t)(num_bits_11)) << 56;
-+              }
-+            }
-+            v_c32 = t_11;
-+          }
-+          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 0u)] = ((uint8_t)((v_c32 >> 0u)));
-+          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 1u)] = ((uint8_t)((v_c32 >> 8u)));
-+          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 2u)] = ((uint8_t)((v_c32 >> 16u)));
-+          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 3u)] = ((uint8_t)((v_c32 >> 24u)));
-+        } else {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(21);
-+            uint32_t t_12;
-+            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+              t_12 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-+              iop_a_src += 2;
-+            } else {
-+              self->private_data.s_do_decode_image_config.scratch = 0;
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22);
-+              while (true) {
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+                uint32_t num_bits_12 = ((uint32_t)(*scratch >> 56));
-+                *scratch <<= 8;
-+                *scratch >>= 8;
-+                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_12;
-+                if (num_bits_12 == 8) {
-+                  t_12 = ((uint32_t)(*scratch));
-+                  break;
-+                }
-+                num_bits_12 += 8u;
-+                *scratch |= ((uint64_t)(num_bits_12)) << 56;
-+              }
-+            }
-+            v_c32 = t_12;
-+          }
-+          v_c5 = (31u & (v_c32 >> 0u));
-+          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 0u)] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
-+          v_c5 = (31u & (v_c32 >> 5u));
-+          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 1u)] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
-+          v_c5 = (31u & (v_c32 >> 10u));
-+          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 2u)] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
-+          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 3u)] = 255u;
-+        }
-+        v_i += 1u;
-+      }
-+      while (v_i < 256u) {
-+        self->private_data.f_src_palette[((v_i * 4u) + 0u)] = 0u;
-+        self->private_data.f_src_palette[((v_i * 4u) + 1u)] = 0u;
-+        self->private_data.f_src_palette[((v_i * 4u) + 2u)] = 0u;
-+        self->private_data.f_src_palette[((v_i * 4u) + 3u)] = 255u;
-+        v_i += 1u;
-+      }
-+    }
-+    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
-+    if (a_dst != NULL) {
-+      wuffs_base__image_config__set(
-+          a_dst,
-+          self->private_impl.f_src_pixfmt,
-+          0u,
-+          self->private_impl.f_width,
-+          self->private_impl.f_height,
-+          self->private_impl.f_frame_config_io_position,
-+          self->private_impl.f_opaque);
-+    }
-+    self->private_impl.f_call_sequence = 32u;
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_do_decode_image_config = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_do_decode_image_config.v_i = v_i;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func tga.decoder.decode_frame_config
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_tga__decoder__decode_frame_config(
-+    wuffs_tga__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 2)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_tga__decoder__do_decode_frame_config(self, a_dst, a_src);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_tga__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+
-+    ok:
-+    self->private_impl.p_decode_frame_config = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func tga.decoder.do_decode_frame_config
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_tga__decoder__do_decode_frame_config(
-+    wuffs_tga__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_call_sequence == 32u) {
-+    } else if (self->private_impl.f_call_sequence < 32u) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      status = wuffs_tga__decoder__do_decode_image_config(self, NULL, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+    } else if (self->private_impl.f_call_sequence == 40u) {
-+      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
-+        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
-+        goto exit;
-+      }
-+    } else if (self->private_impl.f_call_sequence == 64u) {
-+      self->private_impl.f_call_sequence = 96u;
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-     } else {
--      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--      goto exit;
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-     }
--    if (self->private_impl.f_num_decoded_frame_configs_value == 0u) {
--      self->private_impl.f_first_rect_x0 = self->private_impl.f_frame_rect_x0;
--      self->private_impl.f_first_rect_y0 = self->private_impl.f_frame_rect_y0;
--      self->private_impl.f_first_rect_x1 = self->private_impl.f_frame_rect_x1;
--      self->private_impl.f_first_rect_y1 = self->private_impl.f_frame_rect_y1;
--      self->private_impl.f_first_duration = self->private_impl.f_frame_duration;
--      self->private_impl.f_first_disposal = self->private_impl.f_frame_disposal;
--      self->private_impl.f_first_overwrite_instead_of_blend = self->private_impl.f_frame_overwrite_instead_of_blend;
-+    if (a_dst != NULL) {
-+      wuffs_base__frame_config__set(
-+          a_dst,
-+          wuffs_base__utility__make_rect_ie_u32(
-+          0u,
-+          0u,
-+          self->private_impl.f_width,
-+          self->private_impl.f_height),
-+          ((wuffs_base__flicks)(0u)),
-+          0u,
-+          self->private_impl.f_frame_config_io_position,
-+          0u,
-+          self->private_impl.f_opaque,
-+          false,
-+          4278190080u);
-     }
-+    self->private_impl.f_call_sequence = 64u;
- 
--    goto ok;
-     ok:
--    self->private_impl.p_decode_fctl[0] = 0;
-+    self->private_impl.p_do_decode_frame_config = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_fctl[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_decode_fctl[0].v_x0 = v_x0;
--  self->private_data.s_decode_fctl[0].v_x1 = v_x1;
--  self->private_data.s_decode_fctl[0].v_y1 = v_y1;
-+  self->private_impl.p_do_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
-   goto exit;
-   exit:
-@@ -56212,15 +69922,114 @@ wuffs_png__decoder__decode_fctl(
-   return status;
- }
- 
--// -------- func png.decoder.decode_gama
-+// -------- func tga.decoder.decode_frame
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_tga__decoder__decode_frame(
-+    wuffs_tga__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_dst || !a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 3)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_frame;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_tga__decoder__do_decode_frame(self,
-+            a_dst,
-+            a_src,
-+            a_blend,
-+            a_workbuf,
-+            a_opts);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_tga__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+
-+    ok:
-+    self->private_impl.p_decode_frame = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func tga.decoder.do_decode_frame
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_png__decoder__decode_gama(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src) {
-+wuffs_tga__decoder__do_decode_frame(
-+    wuffs_tga__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+  wuffs_base__pixel_format v_dst_pixfmt = {0};
-+  uint32_t v_dst_bits_per_pixel = 0;
-+  uint64_t v_dst_bytes_per_pixel = 0;
-+  uint32_t v_dst_x = 0;
-+  uint32_t v_dst_y = 0;
-+  wuffs_base__table_u8 v_tab = {0};
-+  wuffs_base__slice_u8 v_dst_palette = {0};
-+  wuffs_base__slice_u8 v_dst = {0};
-+  uint64_t v_dst_start = 0;
-+  wuffs_base__slice_u8 v_src_palette = {0};
-+  uint64_t v_mark = 0;
-+  uint64_t v_num_pixels64 = 0;
-+  uint32_t v_num_pixels32 = 0;
-+  uint32_t v_lit_length = 0;
-+  uint32_t v_run_length = 0;
-+  uint64_t v_num_dst_bytes = 0;
-+  uint32_t v_num_src_bytes = 0;
-+  uint32_t v_c32 = 0;
-+  uint32_t v_c5 = 0;
-+
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -56232,516 +70041,739 @@ wuffs_png__decoder__decode_gama(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_gama[0];
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame;
-+  if (coro_susp_point) {
-+    v_dst_bytes_per_pixel = self->private_data.s_do_decode_frame.v_dst_bytes_per_pixel;
-+    v_dst_x = self->private_data.s_do_decode_frame.v_dst_x;
-+    v_dst_y = self->private_data.s_do_decode_frame.v_dst_y;
-+    v_mark = self->private_data.s_do_decode_frame.v_mark;
-+    v_num_pixels32 = self->private_data.s_do_decode_frame.v_num_pixels32;
-+    v_lit_length = self->private_data.s_do_decode_frame.v_lit_length;
-+    v_run_length = self->private_data.s_do_decode_frame.v_run_length;
-+    v_num_dst_bytes = self->private_data.s_do_decode_frame.v_num_dst_bytes;
-+  }
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if (self->private_impl.f_chunk_length != 4u) {
--      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
-+    if (self->private_impl.f_call_sequence == 64u) {
-+    } else if (self->private_impl.f_call_sequence < 64u) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      status = wuffs_tga__decoder__do_decode_frame_config(self, NULL, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+    } else {
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-+    }
-+    if (self->private_impl.f_header_color_map_type != 0u) {
-+      v_src_palette = wuffs_base__make_slice_u8(self->private_data.f_src_palette, 1024);
-+    }
-+    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
-+        wuffs_base__pixel_buffer__pixel_format(a_dst),
-+        wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
-+        wuffs_base__utility__make_pixel_format(self->private_impl.f_src_pixfmt),
-+        v_src_palette,
-+        a_blend);
-+    if ( ! wuffs_base__status__is_ok(&v_status)) {
-+      status = v_status;
-+      if (wuffs_base__status__is_error(&status)) {
-+        goto exit;
-+      } else if (wuffs_base__status__is_suspension(&status)) {
-+        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+        goto exit;
-+      }
-+      goto ok;
-+    }
-+    v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
-+    v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
-+    if ((v_dst_bits_per_pixel & 7u) != 0u) {
-+      status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
-       goto exit;
-     }
--    self->private_impl.f_chunk_length = 0u;
--    self->private_impl.f_metadata_flavor = 5u;
--    self->private_impl.f_metadata_fourcc = 1195461953u;
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      uint64_t t_0;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--        t_0 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
--        iop_a_src += 4;
--      } else {
--        self->private_data.s_decode_gama[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--        while (true) {
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint64_t* scratch = &self->private_data.s_decode_gama[0].scratch;
--          uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
--          *scratch >>= 8;
--          *scratch <<= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
--          if (num_bits_0 == 24) {
--            t_0 = ((uint64_t)(*scratch >> 32));
--            break;
-+    v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8u)));
-+    if (((uint8_t)(self->private_impl.f_header_image_descriptor & 32u)) == 0u) {
-+      v_dst_y = ((uint32_t)(self->private_impl.f_height - 1u));
-+    }
-+    if (((uint8_t)(self->private_impl.f_header_image_type & 8u)) == 0u) {
-+      v_lit_length = self->private_impl.f_width;
-+    }
-+    label__resume__continue:;
-+    while (true) {
-+      v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
-+      v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024));
-+      while (v_dst_y < self->private_impl.f_height) {
-+        v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, v_dst_y);
-+        v_dst_start = (((uint64_t)(v_dst_x)) * v_dst_bytes_per_pixel);
-+        if (v_dst_start <= ((uint64_t)(v_dst.len))) {
-+          v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_start);
-+        } else {
-+          v_dst = wuffs_base__utility__empty_slice_u8();
-+        }
-+        while (v_dst_x < self->private_impl.f_width) {
-+          if (self->private_impl.f_src_bytes_per_pixel > 0u) {
-+            if (v_lit_length > 0u) {
-+              v_mark = ((uint64_t)(iop_a_src - io0_a_src));
-+              v_num_pixels64 = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(self->private_impl.f_src_bytes_per_pixel)));
-+              v_num_pixels32 = ((uint32_t)(wuffs_base__u64__min(v_num_pixels64, ((uint64_t)(v_lit_length)))));
-+              v_num_dst_bytes = (((uint64_t)(v_num_pixels32)) * v_dst_bytes_per_pixel);
-+              v_num_src_bytes = (v_num_pixels32 * self->private_impl.f_src_bytes_per_pixel);
-+              self->private_data.s_do_decode_frame.scratch = v_num_src_bytes;
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+              if (self->private_data.s_do_decode_frame.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+                self->private_data.s_do_decode_frame.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+                iop_a_src = io2_a_src;
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              iop_a_src += self->private_data.s_do_decode_frame.scratch;
-+              wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_private_impl__io__since(v_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
-+              if (v_num_dst_bytes <= ((uint64_t)(v_dst.len))) {
-+                v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_num_dst_bytes);
-+              } else {
-+                v_dst = wuffs_base__utility__empty_slice_u8();
-+              }
-+              v_dst_x += v_num_pixels32;
-+              v_lit_length = (((uint32_t)(v_lit_length - v_num_pixels32)) & 65535u);
-+              if (v_lit_length > 0u) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
-+                goto label__resume__continue;
-+              }
-+            } else if (v_run_length > 0u) {
-+              v_run_length -= 1u;
-+              wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, self->private_impl.f_scratch_bytes_per_pixel));
-+              if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) {
-+                v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel);
-+              }
-+              v_dst_x += 1u;
-+            } else {
-+              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
-+                goto label__resume__continue;
-+              }
-+              if (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) < 128u) {
-+                v_lit_length = (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) + 1u);
-+                iop_a_src += 1u;
-+                if ((v_lit_length + v_dst_x) > self->private_impl.f_width) {
-+                  status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding);
-+                  goto exit;
-+                }
-+              } else {
-+                if (self->private_impl.f_src_bytes_per_pixel == 1u) {
-+                  if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
-+                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
-+                    goto label__resume__continue;
-+                  }
-+                  v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127u) + 1u);
-+                  iop_a_src += 1u;
-+                  self->private_data.f_scratch[0u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+                  iop_a_src += 1u;
-+                } else if (self->private_impl.f_src_bytes_per_pixel == 3u) {
-+                  if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
-+                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
-+                    goto label__resume__continue;
-+                  }
-+                  v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127u) + 1u);
-+                  iop_a_src += 1u;
-+                  self->private_data.f_scratch[0u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+                  iop_a_src += 1u;
-+                  self->private_data.f_scratch[1u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+                  iop_a_src += 1u;
-+                  self->private_data.f_scratch[2u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+                  iop_a_src += 1u;
-+                } else {
-+                  if (((uint64_t)(io2_a_src - iop_a_src)) < 5u) {
-+                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
-+                    goto label__resume__continue;
-+                  }
-+                  v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127u) + 1u);
-+                  iop_a_src += 1u;
-+                  self->private_data.f_scratch[0u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+                  iop_a_src += 1u;
-+                  self->private_data.f_scratch[1u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+                  iop_a_src += 1u;
-+                  self->private_data.f_scratch[2u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+                  iop_a_src += 1u;
-+                  self->private_data.f_scratch[3u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+                  iop_a_src += 1u;
-+                }
-+                if ((v_run_length + v_dst_x) > self->private_impl.f_width) {
-+                  status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding);
-+                  goto exit;
-+                }
-+              }
-+            }
-+          } else {
-+            if (v_lit_length > 0u) {
-+              if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
-+                goto label__resume__continue;
-+              }
-+              v_c32 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-+              iop_a_src += 2u;
-+              v_c5 = (31u & (v_c32 >> 0u));
-+              self->private_data.f_scratch[0u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
-+              v_c5 = (31u & (v_c32 >> 5u));
-+              self->private_data.f_scratch[1u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
-+              v_c5 = (31u & (v_c32 >> 10u));
-+              self->private_data.f_scratch[2u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
-+              self->private_data.f_scratch[3u] = 255u;
-+              wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, 4));
-+              if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) {
-+                v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel);
-+              }
-+              v_dst_x += 1u;
-+              v_lit_length -= 1u;
-+            } else if (v_run_length > 0u) {
-+              v_run_length -= 1u;
-+              wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, self->private_impl.f_scratch_bytes_per_pixel));
-+              if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) {
-+                v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel);
-+              }
-+              v_dst_x += 1u;
-+            } else {
-+              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
-+                goto label__resume__continue;
-+              }
-+              if (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) < 128u) {
-+                v_lit_length = (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) + 1u);
-+                iop_a_src += 1u;
-+                if ((v_lit_length + v_dst_x) > self->private_impl.f_width) {
-+                  status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding);
-+                  goto exit;
-+                }
-+              } else {
-+                if (((uint64_t)(io2_a_src - iop_a_src)) < 3u) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
-+                  goto label__resume__continue;
-+                }
-+                v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127u) + 1u);
-+                iop_a_src += 1u;
-+                v_c32 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-+                iop_a_src += 2u;
-+                v_c5 = (31u & (v_c32 >> 0u));
-+                self->private_data.f_scratch[0u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
-+                v_c5 = (31u & (v_c32 >> 5u));
-+                self->private_data.f_scratch[1u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
-+                v_c5 = (31u & (v_c32 >> 10u));
-+                self->private_data.f_scratch[2u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
-+                self->private_data.f_scratch[3u] = 255u;
-+                if ((v_run_length + v_dst_x) > self->private_impl.f_width) {
-+                  status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding);
-+                  goto exit;
-+                }
-+              }
-+            }
-           }
--          num_bits_0 += 8u;
--          *scratch |= ((uint64_t)(num_bits_0));
-+        }
-+        v_dst_x = 0u;
-+        if (((uint8_t)(self->private_impl.f_header_image_descriptor & 32u)) == 0u) {
-+          v_dst_y -= 1u;
-+        } else {
-+          v_dst_y += 1u;
-+        }
-+        if (((uint8_t)(self->private_impl.f_header_image_type & 8u)) == 0u) {
-+          v_lit_length = self->private_impl.f_width;
-         }
-       }
--      self->private_impl.f_metadata_x = t_0;
-+      break;
-     }
--    self->private_impl.f_metadata_y = 0u;
--    self->private_impl.f_metadata_z = 0u;
-+    self->private_impl.f_call_sequence = 96u;
-+
-+    ok:
-+    self->private_impl.p_do_decode_frame = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_do_decode_frame.v_dst_bytes_per_pixel = v_dst_bytes_per_pixel;
-+  self->private_data.s_do_decode_frame.v_dst_x = v_dst_x;
-+  self->private_data.s_do_decode_frame.v_dst_y = v_dst_y;
-+  self->private_data.s_do_decode_frame.v_mark = v_mark;
-+  self->private_data.s_do_decode_frame.v_num_pixels32 = v_num_pixels32;
-+  self->private_data.s_do_decode_frame.v_lit_length = v_lit_length;
-+  self->private_data.s_do_decode_frame.v_run_length = v_run_length;
-+  self->private_data.s_do_decode_frame.v_num_dst_bytes = v_num_dst_bytes;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func tga.decoder.frame_dirty_rect
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
-+wuffs_tga__decoder__frame_dirty_rect(
-+    const wuffs_tga__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_rect_ie_u32();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_rect_ie_u32();
-+  }
-+
-+  return wuffs_base__utility__make_rect_ie_u32(
-+      0u,
-+      0u,
-+      self->private_impl.f_width,
-+      self->private_impl.f_height);
-+}
-+
-+// -------- func tga.decoder.num_animation_loops
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_tga__decoder__num_animation_loops(
-+    const wuffs_tga__decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  return 0u;
-+}
-+
-+// -------- func tga.decoder.num_decoded_frame_configs
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_tga__decoder__num_decoded_frame_configs(
-+    const wuffs_tga__decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  if (self->private_impl.f_call_sequence > 32u) {
-+    return 1u;
-+  }
-+  return 0u;
-+}
-+
-+// -------- func tga.decoder.num_decoded_frames
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_tga__decoder__num_decoded_frames(
-+    const wuffs_tga__decoder* self) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  if (self->private_impl.f_call_sequence > 64u) {
-+    return 1u;
-+  }
-+  return 0u;
-+}
-+
-+// -------- func tga.decoder.restart_frame
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_tga__decoder__restart_frame(
-+    wuffs_tga__decoder* self,
-+    uint64_t a_index,
-+    uint64_t a_io_position) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+
-+  if (self->private_impl.f_call_sequence < 32u) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-+  }
-+  if (a_index != 0u) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  self->private_impl.f_call_sequence = 40u;
-+  self->private_impl.f_frame_config_io_position = a_io_position;
-+  return wuffs_base__make_status(NULL);
-+}
- 
--    goto ok;
--    ok:
--    self->private_impl.p_decode_gama[0] = 0;
--    goto exit;
-+// -------- func tga.decoder.set_report_metadata
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_tga__decoder__set_report_metadata(
-+    wuffs_tga__decoder* self,
-+    uint32_t a_fourcc,
-+    bool a_report) {
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+// -------- func tga.decoder.tell_me_more
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_tga__decoder__tell_me_more(
-+    wuffs_tga__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__more_information* a_minfo,
-+    wuffs_base__io_buffer* a_src) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_dst || !a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 4)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_gama[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  status = wuffs_base__make_status(wuffs_base__error__no_more_information);
-+  goto exit;
- 
-+  goto ok;
-+  ok:
-   goto exit;
-   exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-   }
--
-   return status;
- }
- 
--// -------- func png.decoder.decode_iccp
-+// -------- func tga.decoder.workbuf_len
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__decode_iccp(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  uint8_t v_c = 0;
--
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_tga__decoder__workbuf_len(
-+    const wuffs_tga__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_iccp[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
-+}
- 
--    while (true) {
--      if (self->private_impl.f_chunk_length <= 0u) {
--        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--        goto exit;
--      }
--      self->private_impl.f_chunk_length -= 1u;
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
--        }
--        uint8_t t_0 = *iop_a_src++;
--        v_c = t_0;
--      }
--      if (v_c == 0u) {
--        break;
--      }
--    }
--    if (self->private_impl.f_chunk_length <= 0u) {
--      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--      goto exit;
--    }
--    self->private_impl.f_chunk_length -= 1u;
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_1 = *iop_a_src++;
--      v_c = t_1;
--    }
--    if (v_c != 0u) {
--      status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method);
--      goto exit;
--    }
--    self->private_impl.f_metadata_is_zlib_compressed = true;
--    self->private_impl.f_metadata_flavor = 4u;
--    self->private_impl.f_metadata_fourcc = 1229144912u;
--    self->private_impl.f_metadata_x = 0u;
--    self->private_impl.f_metadata_y = 0u;
--    self->private_impl.f_metadata_z = 0u;
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA)
- 
--    goto ok;
--    ok:
--    self->private_impl.p_decode_iccp[0] = 0;
--    goto exit;
--  }
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__VP8)
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_iccp[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+// ---------------- Status Codes Implementations
- 
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
-+// ---------------- Private Consts
- 
--  return status;
--}
-+// ---------------- Private Initializer Prototypes
- 
--// -------- func png.decoder.decode_plte
-+// ---------------- Private Function Prototypes
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__decode_plte(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+// ---------------- VTables
- 
--  uint32_t v_num_entries = 0;
--  uint32_t v_i = 0;
--  uint32_t v_argb = 0;
-+// ---------------- Initializer Implementations
- 
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_vp8__placeholder__initialize(
-+    wuffs_vp8__placeholder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options){
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
--
--  uint32_t coro_susp_point = self->private_impl.p_decode_plte[0];
--  if (coro_susp_point) {
--    v_num_entries = self->private_data.s_decode_plte[0].v_num_entries;
--    v_i = self->private_data.s_decode_plte[0].v_i;
-+  if (sizeof(*self) != sizeof_star_self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  }
-+  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
-+      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-   }
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if ((self->private_impl.f_chunk_length > 768u) || ((self->private_impl.f_chunk_length % 3u) != 0u)) {
--      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--      goto exit;
--    }
--    v_num_entries = (((uint32_t)(self->private_impl.f_chunk_length)) / 3u);
--    self->private_impl.f_chunk_length = 0u;
--    while (v_i < v_num_entries) {
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--        uint32_t t_0;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
--          t_0 = ((uint32_t)(wuffs_base__peek_u24be__no_bounds_check(iop_a_src)));
--          iop_a_src += 3;
--        } else {
--          self->private_data.s_decode_plte[0].scratch = 0;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint64_t* scratch = &self->private_data.s_decode_plte[0].scratch;
--            uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
--            *scratch >>= 8;
--            *scratch <<= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
--            if (num_bits_0 == 16) {
--              t_0 = ((uint32_t)(*scratch >> 40));
--              break;
--            }
--            num_bits_0 += 8u;
--            *scratch |= ((uint64_t)(num_bits_0));
--          }
--        }
--        v_argb = t_0;
--      }
--      v_argb |= 4278190080u;
--      self->private_data.f_src_palette[((4u * v_i) + 0u)] = ((uint8_t)((v_argb >> 0u)));
--      self->private_data.f_src_palette[((4u * v_i) + 1u)] = ((uint8_t)((v_argb >> 8u)));
--      self->private_data.f_src_palette[((4u * v_i) + 2u)] = ((uint8_t)((v_argb >> 16u)));
--      self->private_data.f_src_palette[((4u * v_i) + 3u)] = ((uint8_t)((v_argb >> 24u)));
--      v_i += 1u;
-+  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
-+    // The whole point of this if-check is to detect an uninitialized *self.
-+    // We disable the warning on GCC. Clang-5.0 does not have this warning.
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+#endif
-+    if (self->private_impl.magic != 0) {
-+      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-     }
--    while (v_i < 256u) {
--      self->private_data.f_src_palette[((4u * v_i) + 0u)] = 0u;
--      self->private_data.f_src_palette[((4u * v_i) + 1u)] = 0u;
--      self->private_data.f_src_palette[((4u * v_i) + 2u)] = 0u;
--      self->private_data.f_src_palette[((4u * v_i) + 3u)] = 255u;
--      v_i += 1u;
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+  } else {
-+    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
-+      memset(self, 0, sizeof(*self));
-+      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-+    } else {
-+      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-     }
--
--    goto ok;
--    ok:
--    self->private_impl.p_decode_plte[0] = 0;
--    goto exit;
-   }
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_plte[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_decode_plte[0].v_num_entries = v_num_entries;
--  self->private_data.s_decode_plte[0].v_i = v_i;
-+  self->private_impl.magic = WUFFS_BASE__MAGIC;
-+  return wuffs_base__make_status(NULL);
-+}
- 
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+wuffs_vp8__placeholder*
-+wuffs_vp8__placeholder__alloc(void) {
-+  wuffs_vp8__placeholder* x =
-+      (wuffs_vp8__placeholder*)(calloc(1, sizeof(wuffs_vp8__placeholder)));
-+  if (!x) {
-+    return NULL;
-   }
--
--  return status;
-+  if (wuffs_vp8__placeholder__initialize(
-+      x, sizeof(wuffs_vp8__placeholder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+    free(x);
-+    return NULL;
-+  }
-+  return x;
- }
- 
--// -------- func png.decoder.decode_srgb
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__decode_srgb(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+size_t
-+sizeof__wuffs_vp8__placeholder(void) {
-+  return sizeof(wuffs_vp8__placeholder);
-+}
- 
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
-+// ---------------- Function Implementations
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_srgb[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__VP8)
- 
--    if (self->private_impl.f_chunk_length != 1u) {
--      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--      goto exit;
--    }
--    self->private_impl.f_chunk_length = 0u;
--    self->private_impl.f_metadata_flavor = 5u;
--    self->private_impl.f_metadata_fourcc = 1397901122u;
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint64_t t_0 = *iop_a_src++;
--      self->private_impl.f_metadata_x = t_0;
--    }
--    self->private_impl.f_metadata_y = 0u;
--    self->private_impl.f_metadata_z = 0u;
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP)
- 
--    goto ok;
--    ok:
--    self->private_impl.p_decode_srgb[0] = 0;
--    goto exit;
--  }
-+// ---------------- Status Codes Implementations
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_srgb[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+const char wuffs_wbmp__error__bad_header[] = "#wbmp: bad header";
-+const char wuffs_wbmp__error__truncated_input[] = "#wbmp: truncated input";
- 
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
-+// ---------------- Private Consts
- 
--  return status;
--}
-+// ---------------- Private Initializer Prototypes
- 
--// -------- func png.decoder.decode_trns
-+// ---------------- Private Function Prototypes
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_png__decoder__decode_trns(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+wuffs_wbmp__decoder__do_decode_image_config(
-+    wuffs_wbmp__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
- 
--  uint32_t v_i = 0;
--  uint32_t v_n = 0;
--  uint64_t v_u = 0;
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_wbmp__decoder__do_decode_frame_config(
-+    wuffs_wbmp__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
- 
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_wbmp__decoder__do_decode_frame(
-+    wuffs_wbmp__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts);
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_trns[0];
--  if (coro_susp_point) {
--    v_i = self->private_data.s_decode_trns[0].v_i;
--    v_n = self->private_data.s_decode_trns[0].v_n;
--  }
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+// ---------------- VTables
- 
--    if (self->private_impl.f_color_type == 0u) {
--      self->private_impl.choosy_filter_and_swizzle = (
--          &wuffs_png__decoder__filter_and_swizzle_tricky);
--      if (self->private_impl.f_depth <= 8u) {
--        self->private_impl.f_dst_pixfmt = 2164295816u;
--        self->private_impl.f_src_pixfmt = 2164295816u;
--      } else {
--        self->private_impl.f_dst_pixfmt = 2164308923u;
--        self->private_impl.f_src_pixfmt = 2164308923u;
--      }
--      if (self->private_impl.f_chunk_length != 2u) {
--        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--        goto exit;
--      }
--      self->private_impl.f_chunk_length = 0u;
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--        uint64_t t_0;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--          t_0 = ((uint64_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
--          iop_a_src += 2;
--        } else {
--          self->private_data.s_decode_trns[0].scratch = 0;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint64_t* scratch = &self->private_data.s_decode_trns[0].scratch;
--            uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
--            *scratch >>= 8;
--            *scratch <<= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
--            if (num_bits_0 == 8) {
--              t_0 = ((uint64_t)(*scratch >> 48));
--              break;
--            }
--            num_bits_0 += 8u;
--            *scratch |= ((uint64_t)(num_bits_0));
--          }
--        }
--        v_u = t_0;
--      }
--      if (self->private_impl.f_depth <= 1u) {
--        self->private_impl.f_remap_transparency = (((v_u & 1u) * 16777215u) | 4278190080u);
--      } else if (self->private_impl.f_depth <= 2u) {
--        self->private_impl.f_remap_transparency = (((v_u & 3u) * 5592405u) | 4278190080u);
--      } else if (self->private_impl.f_depth <= 4u) {
--        self->private_impl.f_remap_transparency = (((v_u & 15u) * 1118481u) | 4278190080u);
--      } else if (self->private_impl.f_depth <= 8u) {
--        self->private_impl.f_remap_transparency = (((v_u & 255u) * 65793u) | 4278190080u);
--      } else {
--        self->private_impl.f_remap_transparency = ((v_u * 4295032833u) | 18446462598732840960u);
--      }
--    } else if (self->private_impl.f_color_type == 2u) {
--      self->private_impl.choosy_filter_and_swizzle = (
--          &wuffs_png__decoder__filter_and_swizzle_tricky);
--      if (self->private_impl.f_depth <= 8u) {
--        self->private_impl.f_dst_pixfmt = 2164295816u;
--        self->private_impl.f_src_pixfmt = 2164295816u;
--      } else {
--        self->private_impl.f_dst_pixfmt = 2164308923u;
--        self->private_impl.f_src_pixfmt = 2164308923u;
--      }
--      if (self->private_impl.f_chunk_length != 6u) {
--        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--        goto exit;
--      }
--      self->private_impl.f_chunk_length = 0u;
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--        uint64_t t_1;
--        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 6)) {
--          t_1 = ((uint64_t)(wuffs_base__peek_u48be__no_bounds_check(iop_a_src)));
--          iop_a_src += 6;
--        } else {
--          self->private_data.s_decode_trns[0].scratch = 0;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--          while (true) {
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint64_t* scratch = &self->private_data.s_decode_trns[0].scratch;
--            uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
--            *scratch >>= 8;
--            *scratch <<= 8;
--            *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
--            if (num_bits_1 == 40) {
--              t_1 = ((uint64_t)(*scratch >> 16));
--              break;
--            }
--            num_bits_1 += 8u;
--            *scratch |= ((uint64_t)(num_bits_1));
--          }
--        }
--        v_u = t_1;
--      }
--      if (self->private_impl.f_depth <= 8u) {
--        self->private_impl.f_remap_transparency = ((255u & (v_u >> 0u)) |
--            (65280u & (v_u >> 8u)) |
--            (16711680u & (v_u >> 16u)) |
--            4278190080u);
--      } else {
--        self->private_impl.f_remap_transparency = (v_u | 18446462598732840960u);
--      }
--    } else if (self->private_impl.f_color_type == 3u) {
--      self->private_impl.f_dst_pixfmt = 2164523016u;
--      self->private_impl.f_src_pixfmt = 2164523016u;
--      if (self->private_impl.f_chunk_length > 256u) {
--        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--        goto exit;
--      }
--      v_n = ((uint32_t)(self->private_impl.f_chunk_length));
--      self->private_impl.f_chunk_length = 0u;
--      while (v_i < v_n) {
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint8_t t_2 = *iop_a_src++;
--          self->private_data.f_src_palette[((4u * v_i) + 3u)] = t_2;
--        }
--        v_i += 1u;
--      }
-+const wuffs_base__image_decoder__func_ptrs
-+wuffs_wbmp__decoder__func_ptrs_for__wuffs_base__image_decoder = {
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__pixel_buffer*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__pixel_blend,
-+      wuffs_base__slice_u8,
-+      wuffs_base__decode_frame_options*))(&wuffs_wbmp__decoder__decode_frame),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__frame_config*,
-+      wuffs_base__io_buffer*))(&wuffs_wbmp__decoder__decode_frame_config),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__image_config*,
-+      wuffs_base__io_buffer*))(&wuffs_wbmp__decoder__decode_image_config),
-+  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_wbmp__decoder__frame_dirty_rect),
-+  (uint64_t(*)(const void*,
-+      uint32_t))(&wuffs_wbmp__decoder__get_quirk),
-+  (uint32_t(*)(const void*))(&wuffs_wbmp__decoder__num_animation_loops),
-+  (uint64_t(*)(const void*))(&wuffs_wbmp__decoder__num_decoded_frame_configs),
-+  (uint64_t(*)(const void*))(&wuffs_wbmp__decoder__num_decoded_frames),
-+  (wuffs_base__status(*)(void*,
-+      uint64_t,
-+      uint64_t))(&wuffs_wbmp__decoder__restart_frame),
-+  (wuffs_base__status(*)(void*,
-+      uint32_t,
-+      uint64_t))(&wuffs_wbmp__decoder__set_quirk),
-+  (wuffs_base__empty_struct(*)(void*,
-+      uint32_t,
-+      bool))(&wuffs_wbmp__decoder__set_report_metadata),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__more_information*,
-+      wuffs_base__io_buffer*))(&wuffs_wbmp__decoder__tell_me_more),
-+  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_wbmp__decoder__workbuf_len),
-+};
-+
-+// ---------------- Initializer Implementations
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_wbmp__decoder__initialize(
-+    wuffs_wbmp__decoder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options){
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (sizeof(*self) != sizeof_star_self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  }
-+  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
-+      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+  }
-+
-+  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
-+    // The whole point of this if-check is to detect an uninitialized *self.
-+    // We disable the warning on GCC. Clang-5.0 does not have this warning.
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+#endif
-+    if (self->private_impl.magic != 0) {
-+      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+    }
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+  } else {
-+    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
-+      memset(self, 0, sizeof(*self));
-+      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-     } else {
--      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--      goto exit;
-+      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-     }
-+  }
- 
--    goto ok;
--    ok:
--    self->private_impl.p_decode_trns[0] = 0;
--    goto exit;
-+  self->private_impl.magic = WUFFS_BASE__MAGIC;
-+  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
-+      wuffs_base__image_decoder__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
-+      (const void*)(&wuffs_wbmp__decoder__func_ptrs_for__wuffs_base__image_decoder);
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+wuffs_wbmp__decoder*
-+wuffs_wbmp__decoder__alloc(void) {
-+  wuffs_wbmp__decoder* x =
-+      (wuffs_wbmp__decoder*)(calloc(1, sizeof(wuffs_wbmp__decoder)));
-+  if (!x) {
-+    return NULL;
-+  }
-+  if (wuffs_wbmp__decoder__initialize(
-+      x, sizeof(wuffs_wbmp__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+    free(x);
-+    return NULL;
-   }
-+  return x;
-+}
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_trns[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_decode_trns[0].v_i = v_i;
--  self->private_data.s_decode_trns[0].v_n = v_n;
-+size_t
-+sizeof__wuffs_wbmp__decoder(void) {
-+  return sizeof(wuffs_wbmp__decoder);
-+}
- 
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+// ---------------- Function Implementations
-+
-+// -------- func wbmp.decoder.get_quirk
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_wbmp__decoder__get_quirk(
-+    const wuffs_wbmp__decoder* self,
-+    uint32_t a_key) {
-+  if (!self) {
-+    return 0;
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-   }
- 
--  return status;
-+  return 0u;
- }
- 
--// -------- func png.decoder.decode_frame_config
-+// -------- func wbmp.decoder.set_quirk
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_png__decoder__decode_frame_config(
--    wuffs_png__decoder* self,
--    wuffs_base__frame_config* a_dst,
-+wuffs_wbmp__decoder__set_quirk(
-+    wuffs_wbmp__decoder* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+
-+  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+}
-+
-+// -------- func wbmp.decoder.decode_image_config
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_wbmp__decoder__decode_image_config(
-+    wuffs_wbmp__decoder* self,
-+    wuffs_base__image_config* a_dst,
-     wuffs_base__io_buffer* a_src) {
-   if (!self) {
-     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-@@ -56757,7 +70789,7 @@ wuffs_png__decoder__decode_frame_config(
-     return wuffs_base__make_status(wuffs_base__error__bad_argument);
-   }
-   if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 2)) {
-+      (self->private_impl.active_coroutine != 1)) {
-     self->private_impl.magic = WUFFS_BASE__DISABLED;
-     return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-   }
-@@ -56766,17 +70798,17 @@ wuffs_png__decoder__decode_frame_config(
- 
-   wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_image_config;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
-     while (true) {
-       {
--        wuffs_base__status t_0 = wuffs_png__decoder__do_decode_frame_config(self, a_dst, a_src);
-+        wuffs_base__status t_0 = wuffs_wbmp__decoder__do_decode_image_config(self, a_dst, a_src);
-         v_status = t_0;
-       }
-       if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_png__error__truncated_input);
-+        status = wuffs_base__make_status(wuffs_wbmp__error__truncated_input);
-         goto exit;
-       }
-       status = v_status;
-@@ -56784,14 +70816,14 @@ wuffs_png__decoder__decode_frame_config(
-     }
- 
-     ok:
--    self->private_impl.p_decode_frame_config[0] = 0;
-+    self->private_impl.p_decode_image_config = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
-+  self->private_impl.p_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
- 
-   goto exit;
-   exit:
-@@ -56801,17 +70833,19 @@ wuffs_png__decoder__decode_frame_config(
-   return status;
- }
- 
--// -------- func png.decoder.do_decode_frame_config
-+// -------- func wbmp.decoder.do_decode_image_config
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_png__decoder__do_decode_frame_config(
--    wuffs_png__decoder* self,
--    wuffs_base__frame_config* a_dst,
-+wuffs_wbmp__decoder__do_decode_image_config(
-+    wuffs_wbmp__decoder* self,
-+    wuffs_base__image_config* a_dst,
-     wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint32_t v_checksum_have = 0;
-+  uint8_t v_c8 = 0;
-+  uint32_t v_i = 0;
-+  uint32_t v_p = 0;
- 
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -56824,392 +70858,88 @@ wuffs_png__decoder__do_decode_frame_config(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0];
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config;
-+  if (coro_susp_point) {
-+    v_i = self->private_data.s_do_decode_image_config.v_i;
-+    v_p = self->private_data.s_do_decode_image_config.v_p;
-+  }
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if ((self->private_impl.f_call_sequence & 16u) != 0u) {
-+    if (self->private_impl.f_call_sequence != 0u) {
-       status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-       goto exit;
--    } else if (self->private_impl.f_call_sequence == 32u) {
--    } else if (self->private_impl.f_call_sequence < 32u) {
--      if (a_src) {
--        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--      }
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      status = wuffs_png__decoder__do_decode_image_config(self, NULL, a_src);
--      if (a_src) {
--        iop_a_src = a_src->data.ptr + a_src->meta.ri;
--      }
--      if (status.repr) {
--        goto suspend;
--      }
--    } else if (self->private_impl.f_call_sequence == 40u) {
--      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
--        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
--        goto exit;
--      }
--    } else if (self->private_impl.f_call_sequence == 64u) {
--      if (a_src) {
--        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--      }
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--      status = wuffs_png__decoder__skip_frame(self, a_src);
--      if (a_src) {
--        iop_a_src = a_src->data.ptr + a_src->meta.ri;
--      }
--      if (status.repr) {
--        goto suspend;
--      }
--    } else {
--      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--      goto ok;
--    }
--    if (self->private_impl.f_metadata_fourcc != 0u) {
--      self->private_impl.f_call_sequence = 48u;
--      status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
--      goto ok;
-     }
--    if (self->private_impl.f_num_decoded_frame_configs_value == 0u) {
--      self->private_impl.f_frame_rect_x0 = self->private_impl.f_first_rect_x0;
--      self->private_impl.f_frame_rect_y0 = self->private_impl.f_first_rect_y0;
--      self->private_impl.f_frame_rect_x1 = self->private_impl.f_first_rect_x1;
--      self->private_impl.f_frame_rect_y1 = self->private_impl.f_first_rect_y1;
--      self->private_impl.f_frame_config_io_position = self->private_impl.f_first_config_io_position;
--      self->private_impl.f_frame_duration = self->private_impl.f_first_duration;
--      self->private_impl.f_frame_disposal = self->private_impl.f_first_disposal;
--      self->private_impl.f_frame_overwrite_instead_of_blend = self->private_impl.f_first_overwrite_instead_of_blend;
--    } else {
--      while (true) {
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--          uint32_t t_0;
--          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--            t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--            iop_a_src += 4;
--          } else {
--            self->private_data.s_do_decode_frame_config[0].scratch = 0;
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--            while (true) {
--              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                goto suspend;
--              }
--              uint64_t* scratch = &self->private_data.s_do_decode_frame_config[0].scratch;
--              uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
--              *scratch >>= 8;
--              *scratch <<= 8;
--              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
--              if (num_bits_0 == 24) {
--                t_0 = ((uint32_t)(*scratch >> 32));
--                break;
--              }
--              num_bits_0 += 8u;
--              *scratch |= ((uint64_t)(num_bits_0));
--            }
--          }
--          self->private_impl.f_chunk_length = t_0;
--        }
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--          uint32_t t_1;
--          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--            t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--            iop_a_src += 4;
--          } else {
--            self->private_data.s_do_decode_frame_config[0].scratch = 0;
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--            while (true) {
--              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                goto suspend;
--              }
--              uint64_t* scratch = &self->private_data.s_do_decode_frame_config[0].scratch;
--              uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
--              *scratch <<= 8;
--              *scratch >>= 8;
--              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
--              if (num_bits_1 == 24) {
--                t_1 = ((uint32_t)(*scratch));
--                break;
--              }
--              num_bits_1 += 8u;
--              *scratch |= ((uint64_t)(num_bits_1)) << 56;
--            }
--          }
--          self->private_impl.f_chunk_type = t_1;
--        }
--        if (self->private_impl.f_chunk_type == 1145980233u) {
--          if (self->private_impl.f_chunk_length != 0u) {
--            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--            goto exit;
--          }
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
--            uint32_t t_2;
--            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--              t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--              iop_a_src += 4;
--            } else {
--              self->private_data.s_do_decode_frame_config[0].scratch = 0;
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
--              while (true) {
--                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                  goto suspend;
--                }
--                uint64_t* scratch = &self->private_data.s_do_decode_frame_config[0].scratch;
--                uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
--                *scratch <<= 8;
--                *scratch >>= 8;
--                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
--                if (num_bits_2 == 24) {
--                  t_2 = ((uint32_t)(*scratch));
--                  break;
--                }
--                num_bits_2 += 8u;
--                *scratch |= ((uint64_t)(num_bits_2)) << 56;
--              }
--            }
--            v_checksum_have = t_2;
--          }
--          if ( ! self->private_impl.f_ignore_checksum && (v_checksum_have != 2187346606u)) {
--            status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
--            goto exit;
--          }
--          self->private_impl.f_call_sequence = 96u;
--          status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--          goto ok;
--        } else if (self->private_impl.f_chunk_type == 1413571686u) {
--          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--          goto exit;
--        } else if (self->private_impl.f_chunk_type == 1280598886u) {
--          self->private_impl.f_frame_config_io_position = ((uint64_t)(wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))) - 8u));
--          if (a_src) {
--            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--          }
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
--          status = wuffs_png__decoder__decode_fctl(self, a_src);
--          if (a_src) {
--            iop_a_src = a_src->data.ptr + a_src->meta.ri;
--          }
--          if (status.repr) {
--            goto suspend;
--          }
--          self->private_data.s_do_decode_frame_config[0].scratch = 4u;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
--          if (self->private_data.s_do_decode_frame_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--            self->private_data.s_do_decode_frame_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--            iop_a_src = io2_a_src;
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          iop_a_src += self->private_data.s_do_decode_frame_config[0].scratch;
--          break;
--        }
--        if (a_src) {
--          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--        }
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
--        status = wuffs_png__decoder__decode_other_chunk(self, a_src, true);
--        if (a_src) {
--          iop_a_src = a_src->data.ptr + a_src->meta.ri;
--        }
--        if (status.repr) {
--          goto suspend;
--        }
--        if (self->private_impl.f_metadata_fourcc != 0u) {
--          self->private_impl.f_call_sequence = 48u;
--          status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
--          goto ok;
--        }
--        self->private_data.s_do_decode_frame_config[0].scratch = 4u;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
--        if (self->private_data.s_do_decode_frame_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--          self->private_data.s_do_decode_frame_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--          iop_a_src = io2_a_src;
-+    v_i = 0u;
-+    while (v_i < 2u) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-           status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-           goto suspend;
-         }
--        iop_a_src += self->private_data.s_do_decode_frame_config[0].scratch;
--        self->private_impl.f_chunk_length = 0u;
-+        uint8_t t_0 = *iop_a_src++;
-+        v_c8 = t_0;
-       }
--    }
--    if (a_dst != NULL) {
--      wuffs_base__frame_config__set(
--          a_dst,
--          wuffs_base__utility__make_rect_ie_u32(
--          self->private_impl.f_frame_rect_x0,
--          self->private_impl.f_frame_rect_y0,
--          self->private_impl.f_frame_rect_x1,
--          self->private_impl.f_frame_rect_y1),
--          ((wuffs_base__flicks)(self->private_impl.f_frame_duration)),
--          ((uint64_t)(self->private_impl.f_num_decoded_frame_configs_value)),
--          self->private_impl.f_frame_config_io_position,
--          self->private_impl.f_frame_disposal,
--          ((self->private_impl.f_color_type <= 3u) &&  ! self->private_impl.f_seen_trns),
--          self->private_impl.f_frame_overwrite_instead_of_blend,
--          0u);
--    }
--    wuffs_base__u32__sat_add_indirect(&self->private_impl.f_num_decoded_frame_configs_value, 1u);
--    self->private_impl.f_call_sequence = 64u;
--
--    ok:
--    self->private_impl.p_do_decode_frame_config[0] = 0;
--    goto exit;
--  }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
--
--  return status;
--}
--
--// -------- func png.decoder.skip_frame
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__skip_frame(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  uint32_t v_seq_num = 0;
--
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
--
--  uint32_t coro_susp_point = self->private_impl.p_skip_frame[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    self->private_impl.f_chunk_type_array[0u] = 0u;
--    self->private_impl.f_chunk_type_array[1u] = 0u;
--    self->private_impl.f_chunk_type_array[2u] = 0u;
--    self->private_impl.f_chunk_type_array[3u] = 0u;
--    while (true) {
--      if (((uint64_t)(io2_a_src - iop_a_src)) < 8u) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
--        continue;
-+      if (v_c8 != 0u) {
-+        status = wuffs_base__make_status(wuffs_wbmp__error__bad_header);
-+        goto exit;
-       }
--      self->private_impl.f_chunk_length = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--      self->private_impl.f_chunk_type = ((uint32_t)((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) >> 32u)));
--      if (self->private_impl.f_chunk_type == 1413563465u) {
--        if (self->private_impl.f_chunk_type_array[0u] == 102u) {
--          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--          goto exit;
--        }
--        self->private_impl.f_chunk_type_array[0u] = 73u;
--        self->private_impl.f_chunk_type_array[1u] = 68u;
--        self->private_impl.f_chunk_type_array[2u] = 65u;
--        self->private_impl.f_chunk_type_array[3u] = 84u;
--      } else if (self->private_impl.f_chunk_type == 1413571686u) {
--        if (self->private_impl.f_chunk_type_array[0u] == 73u) {
--          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--          goto exit;
--        }
--        self->private_impl.f_chunk_type_array[0u] = 102u;
--        self->private_impl.f_chunk_type_array[1u] = 100u;
--        self->private_impl.f_chunk_type_array[2u] = 65u;
--        self->private_impl.f_chunk_type_array[3u] = 84u;
--        if (self->private_impl.f_chunk_length < 4u) {
--          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--          goto exit;
--        }
--        self->private_impl.f_chunk_length -= 4u;
--        iop_a_src += 8u;
-+      v_i += 1u;
-+    }
-+    v_i = 0u;
-+    while (v_i < 2u) {
-+      v_p = 0u;
-+      while (true) {
-         {
-           WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--          uint32_t t_0;
--          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--            t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--            iop_a_src += 4;
--          } else {
--            self->private_data.s_skip_frame[0].scratch = 0;
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--            while (true) {
--              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                goto suspend;
--              }
--              uint64_t* scratch = &self->private_data.s_skip_frame[0].scratch;
--              uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
--              *scratch >>= 8;
--              *scratch <<= 8;
--              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
--              if (num_bits_0 == 24) {
--                t_0 = ((uint32_t)(*scratch >> 32));
--                break;
--              }
--              num_bits_0 += 8u;
--              *scratch |= ((uint64_t)(num_bits_0));
--            }
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-           }
--          v_seq_num = t_0;
-+          uint8_t t_1 = *iop_a_src++;
-+          v_c8 = t_1;
-         }
--        if (v_seq_num != self->private_impl.f_next_animation_seq_num) {
--          status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number);
--          goto exit;
--        } else if (self->private_impl.f_next_animation_seq_num >= 4294967295u) {
--          status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
-+        v_p |= ((uint32_t)(((uint8_t)(v_c8 & 127u))));
-+        if (((uint8_t)(v_c8 >> 7u)) == 0u) {
-+          break;
-+        } else if (v_p > 131071u) {
-+          status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
-           goto exit;
-         }
--        self->private_impl.f_next_animation_seq_num += 1u;
--        self->private_data.s_skip_frame[0].scratch = (((uint64_t)(self->private_impl.f_chunk_length)) + 4u);
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--        if (self->private_data.s_skip_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--          self->private_data.s_skip_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--          iop_a_src = io2_a_src;
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
--        }
--        iop_a_src += self->private_data.s_skip_frame[0].scratch;
--        self->private_impl.f_chunk_length = 0u;
--        continue;
--      } else if (self->private_impl.f_chunk_type_array[0u] != 0u) {
--        break;
--      } else if (self->private_impl.f_chunk_type == 1280598886u) {
--        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--        goto exit;
-+        v_p <<= 7u;
-       }
--      self->private_data.s_skip_frame[0].scratch = (((uint64_t)(self->private_impl.f_chunk_length)) + 12u);
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--      if (self->private_data.s_skip_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--        self->private_data.s_skip_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--        iop_a_src = io2_a_src;
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
-+      if (v_i == 0u) {
-+        self->private_impl.f_width = v_p;
-+      } else {
-+        self->private_impl.f_height = v_p;
-       }
--      iop_a_src += self->private_data.s_skip_frame[0].scratch;
--      self->private_impl.f_chunk_length = 0u;
-+      v_i += 1u;
-+    }
-+    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
-+    if (a_dst != NULL) {
-+      wuffs_base__image_config__set(
-+          a_dst,
-+          2198077448u,
-+          0u,
-+          self->private_impl.f_width,
-+          self->private_impl.f_height,
-+          self->private_impl.f_frame_config_io_position,
-+          true);
-     }
--    wuffs_base__u32__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
-     self->private_impl.f_call_sequence = 32u;
- 
-+    goto ok;
-     ok:
--    self->private_impl.p_skip_frame[0] = 0;
-+    self->private_impl.p_do_decode_image_config = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_skip_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.p_do_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_do_decode_image_config.v_i = v_i;
-+  self->private_data.s_do_decode_image_config.v_p = v_p;
- 
-   goto exit;
-   exit:
-@@ -57220,17 +70950,14 @@ wuffs_png__decoder__skip_frame(
-   return status;
- }
- 
--// -------- func png.decoder.decode_frame
-+// -------- func wbmp.decoder.decode_frame_config
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_png__decoder__decode_frame(
--    wuffs_png__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts) {
-+wuffs_wbmp__decoder__decode_frame_config(
-+    wuffs_wbmp__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-   if (!self) {
-     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
-@@ -57240,12 +70967,12 @@ wuffs_png__decoder__decode_frame(
-         ? wuffs_base__error__disabled_by_previous_error
-         : wuffs_base__error__initialize_not_called);
-   }
--  if (!a_dst || !a_src) {
-+  if (!a_src) {
-     self->private_impl.magic = WUFFS_BASE__DISABLED;
-     return wuffs_base__make_status(wuffs_base__error__bad_argument);
-   }
-   if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 3)) {
-+      (self->private_impl.active_coroutine != 2)) {
-     self->private_impl.magic = WUFFS_BASE__DISABLED;
-     return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-   }
-@@ -57254,22 +70981,17 @@ wuffs_png__decoder__decode_frame(
- 
-   wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_frame[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
-     while (true) {
-       {
--        wuffs_base__status t_0 = wuffs_png__decoder__do_decode_frame(self,
--            a_dst,
--            a_src,
--            a_blend,
--            a_workbuf,
--            a_opts);
-+        wuffs_base__status t_0 = wuffs_wbmp__decoder__do_decode_frame_config(self, a_dst, a_src);
-         v_status = t_0;
-       }
-       if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_png__error__truncated_input);
-+        status = wuffs_base__make_status(wuffs_wbmp__error__truncated_input);
-         goto exit;
-       }
-       status = v_status;
-@@ -57277,14 +70999,14 @@ wuffs_png__decoder__decode_frame(
-     }
- 
-     ok:
--    self->private_impl.p_decode_frame[0] = 0;
-+    self->private_impl.p_decode_frame_config = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
-+  self->private_impl.p_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
- 
-   goto exit;
-   exit:
-@@ -57294,24 +71016,16 @@ wuffs_png__decoder__decode_frame(
-   return status;
- }
- 
--// -------- func png.decoder.do_decode_frame
-+// -------- func wbmp.decoder.do_decode_frame_config
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_png__decoder__do_decode_frame(
--    wuffs_png__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts) {
-+wuffs_wbmp__decoder__do_decode_frame_config(
-+    wuffs_wbmp__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint32_t v_seq_num = 0;
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
--  uint32_t v_pass_width = 0;
--  uint32_t v_pass_height = 0;
--
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -57323,210 +71037,62 @@ wuffs_png__decoder__do_decode_frame(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0];
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if ((self->private_impl.f_call_sequence & 16u) != 0u) {
--      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
--      goto exit;
--    } else if (self->private_impl.f_call_sequence >= 96u) {
--      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--      goto ok;
--    } else if (self->private_impl.f_call_sequence != 64u) {
-+    if (self->private_impl.f_call_sequence == 32u) {
-+    } else if (self->private_impl.f_call_sequence < 32u) {
-       if (a_src) {
-         a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-       }
-       WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      status = wuffs_png__decoder__do_decode_frame_config(self, NULL, a_src);
-+      status = wuffs_wbmp__decoder__do_decode_image_config(self, NULL, a_src);
-       if (a_src) {
-         iop_a_src = a_src->data.ptr + a_src->meta.ri;
-       }
-       if (status.repr) {
-         goto suspend;
-       }
--    }
--    while (true) {
--      if (((uint64_t)(io2_a_src - iop_a_src)) < 8u) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
--        continue;
--      }
--      self->private_impl.f_chunk_length = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--      self->private_impl.f_chunk_type = ((uint32_t)((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) >> 32u)));
--      if (self->private_impl.f_chunk_type == 1413563465u) {
--        self->private_impl.f_chunk_type_array[0u] = 73u;
--        self->private_impl.f_chunk_type_array[1u] = 68u;
--        self->private_impl.f_chunk_type_array[2u] = 65u;
--        self->private_impl.f_chunk_type_array[3u] = 84u;
--        iop_a_src += 8u;
--        if ( ! self->private_impl.f_ignore_checksum) {
--          wuffs_base__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
--              sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
--          wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4));
--        }
--        break;
--      } else if (self->private_impl.f_chunk_type == 1413571686u) {
--        self->private_impl.f_chunk_type_array[0u] = 102u;
--        self->private_impl.f_chunk_type_array[1u] = 100u;
--        self->private_impl.f_chunk_type_array[2u] = 65u;
--        self->private_impl.f_chunk_type_array[3u] = 84u;
--        if (self->private_impl.f_chunk_length < 4u) {
--          status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--          goto exit;
--        }
--        self->private_impl.f_chunk_length -= 4u;
--        iop_a_src += 8u;
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--          uint32_t t_0;
--          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--            t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--            iop_a_src += 4;
--          } else {
--            self->private_data.s_do_decode_frame[0].scratch = 0;
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--            while (true) {
--              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                goto suspend;
--              }
--              uint64_t* scratch = &self->private_data.s_do_decode_frame[0].scratch;
--              uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFFu));
--              *scratch >>= 8;
--              *scratch <<= 8;
--              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
--              if (num_bits_0 == 24) {
--                t_0 = ((uint32_t)(*scratch >> 32));
--                break;
--              }
--              num_bits_0 += 8u;
--              *scratch |= ((uint64_t)(num_bits_0));
--            }
--          }
--          v_seq_num = t_0;
--        }
--        if (v_seq_num != self->private_impl.f_next_animation_seq_num) {
--          status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number);
--          goto exit;
--        } else if (self->private_impl.f_next_animation_seq_num >= 4294967295u) {
--          status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
--          goto exit;
--        }
--        self->private_impl.f_next_animation_seq_num += 1u;
--        break;
--      } else if (self->private_impl.f_chunk_type == 1280598886u) {
--        status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--        goto exit;
--      }
--      self->private_data.s_do_decode_frame[0].scratch = (((uint64_t)(self->private_impl.f_chunk_length)) + 12u);
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--      if (self->private_data.s_do_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--        self->private_data.s_do_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--        iop_a_src = io2_a_src;
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      iop_a_src += self->private_data.s_do_decode_frame[0].scratch;
--      self->private_impl.f_chunk_length = 0u;
--    }
--    if (self->private_impl.f_zlib_is_dirty) {
--      wuffs_base__ignore_status(wuffs_zlib__decoder__initialize(&self->private_data.f_zlib,
--          sizeof (wuffs_zlib__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
--      if (self->private_impl.f_ignore_checksum) {
--        wuffs_zlib__decoder__set_quirk(&self->private_data.f_zlib, 1u, 1u);
--      }
--    }
--    self->private_impl.f_zlib_is_dirty = true;
--    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
--        wuffs_base__pixel_buffer__pixel_format(a_dst),
--        wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
--        wuffs_base__utility__make_pixel_format(self->private_impl.f_src_pixfmt),
--        wuffs_base__make_slice_u8(self->private_data.f_src_palette, 1024),
--        a_blend);
--    if ( ! wuffs_base__status__is_ok(&v_status)) {
--      status = v_status;
--      if (wuffs_base__status__is_error(&status)) {
--        goto exit;
--      } else if (wuffs_base__status__is_suspension(&status)) {
--        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+    } else if (self->private_impl.f_call_sequence == 40u) {
-+      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
-+        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
-         goto exit;
-       }
-+    } else if (self->private_impl.f_call_sequence == 64u) {
-+      self->private_impl.f_call_sequence = 96u;
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-+    } else {
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-       goto ok;
-     }
--    self->private_impl.f_workbuf_hist_pos_base = 0u;
--    while (true) {
--      if (self->private_impl.f_chunk_type_array[0u] == 73u) {
--        v_pass_width = (16777215u & ((((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][1u])) + self->private_impl.f_width) >> WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0u]));
--        v_pass_height = (16777215u & ((((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][4u])) + self->private_impl.f_height) >> WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][3u]));
--      } else {
--        v_pass_width = (16777215u & ((uint32_t)(self->private_impl.f_frame_rect_x1 - self->private_impl.f_frame_rect_x0)));
--        v_pass_height = (16777215u & ((uint32_t)(self->private_impl.f_frame_rect_y1 - self->private_impl.f_frame_rect_y0)));
--      }
--      if ((v_pass_width > 0u) && (v_pass_height > 0u)) {
--        self->private_impl.f_pass_bytes_per_row = wuffs_png__decoder__calculate_bytes_per_row(self, v_pass_width);
--        self->private_impl.f_pass_workbuf_length = (((uint64_t)(v_pass_height)) * (1u + self->private_impl.f_pass_bytes_per_row));
--        while (true) {
--          {
--            if (a_src) {
--              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--            }
--            wuffs_base__status t_1 = wuffs_png__decoder__decode_pass(self, a_src, a_workbuf);
--            v_status = t_1;
--            if (a_src) {
--              iop_a_src = a_src->data.ptr + a_src->meta.ri;
--            }
--          }
--          if (wuffs_base__status__is_ok(&v_status)) {
--            break;
--          } else if (wuffs_base__status__is_error(&v_status) || ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed))) {
--            if (self->private_impl.f_workbuf_wi <= ((uint64_t)(a_workbuf.len))) {
--              wuffs_png__decoder__filter_and_swizzle(self, a_dst, wuffs_base__slice_u8__subslice_j(a_workbuf, self->private_impl.f_workbuf_wi));
--            }
--            if (v_status.repr == wuffs_base__suspension__short_read) {
--              status = wuffs_base__make_status(wuffs_png__error__truncated_input);
--              goto exit;
--            }
--          }
--          status = v_status;
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
--        }
--        v_status = wuffs_png__decoder__filter_and_swizzle(self, a_dst, a_workbuf);
--        if ( ! wuffs_base__status__is_ok(&v_status)) {
--          status = v_status;
--          if (wuffs_base__status__is_error(&status)) {
--            goto exit;
--          } else if (wuffs_base__status__is_suspension(&status)) {
--            status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
--            goto exit;
--          }
--          goto ok;
--        }
--        self->private_impl.f_workbuf_hist_pos_base += self->private_impl.f_pass_workbuf_length;
--      }
--      if ((self->private_impl.f_interlace_pass == 0u) || (self->private_impl.f_interlace_pass >= 7u)) {
--        break;
--      }
--#if defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wconversion"
--#endif
--      self->private_impl.f_interlace_pass += 1u;
--#if defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
-+    if (a_dst != NULL) {
-+      wuffs_base__frame_config__set(
-+          a_dst,
-+          wuffs_base__utility__make_rect_ie_u32(
-+          0u,
-+          0u,
-+          self->private_impl.f_width,
-+          self->private_impl.f_height),
-+          ((wuffs_base__flicks)(0u)),
-+          0u,
-+          self->private_impl.f_frame_config_io_position,
-+          0u,
-+          true,
-+          false,
-+          4278190080u);
-     }
--    wuffs_base__u32__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1u);
--    self->private_impl.f_call_sequence = 32u;
-+    self->private_impl.f_call_sequence = 64u;
- 
-     ok:
--    self->private_impl.p_do_decode_frame[0] = 0;
-+    self->private_impl.p_do_decode_frame_config = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.p_do_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
-   goto exit;
-   exit:
-@@ -57537,338 +71103,217 @@ wuffs_png__decoder__do_decode_frame(
-   return status;
- }
- 
--// -------- func png.decoder.decode_pass
-+// -------- func wbmp.decoder.decode_frame
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_png__decoder__decode_pass(
--    wuffs_png__decoder* self,
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_wbmp__decoder__decode_frame(
-+    wuffs_wbmp__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-     wuffs_base__io_buffer* a_src,
--    wuffs_base__slice_u8 a_workbuf) {
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_dst || !a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 3)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  wuffs_base__io_buffer u_w = wuffs_base__empty_io_buffer();
--  wuffs_base__io_buffer* v_w = &u_w;
--  uint8_t* iop_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io0_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io1_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io2_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint64_t v_w_mark = 0;
--  uint64_t v_r_mark = 0;
--  wuffs_base__status v_zlib_status = wuffs_base__make_status(NULL);
--  uint32_t v_checksum_have = 0;
--  uint32_t v_checksum_want = 0;
--  uint32_t v_seq_num = 0;
--
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_pass[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_frame;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    self->private_impl.f_workbuf_wi = 0u;
-     while (true) {
--      if ((self->private_impl.f_workbuf_wi > self->private_impl.f_pass_workbuf_length) || (self->private_impl.f_pass_workbuf_length > ((uint64_t)(a_workbuf.len)))) {
--        status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
--        goto exit;
--      }
-       {
--        wuffs_base__io_buffer* o_0_v_w = v_w;
--        uint8_t *o_0_iop_v_w = iop_v_w;
--        uint8_t *o_0_io0_v_w = io0_v_w;
--        uint8_t *o_0_io1_v_w = io1_v_w;
--        uint8_t *o_0_io2_v_w = io2_v_w;
--        v_w = wuffs_base__io_writer__set(
--            &u_w,
--            &iop_v_w,
--            &io0_v_w,
--            &io1_v_w,
--            &io2_v_w,
--            wuffs_base__slice_u8__subslice_ij(a_workbuf,
--            self->private_impl.f_workbuf_wi,
--            self->private_impl.f_pass_workbuf_length),
--            ((uint64_t)(self->private_impl.f_workbuf_hist_pos_base + self->private_impl.f_workbuf_wi)));
--        {
--          const bool o_1_closed_a_src = a_src->meta.closed;
--          const uint8_t *o_1_io2_a_src = io2_a_src;
--          wuffs_base__io_reader__limit(&io2_a_src, iop_a_src,
--              ((uint64_t)(self->private_impl.f_chunk_length)));
--          if (a_src) {
--            size_t n = ((size_t)(io2_a_src - a_src->data.ptr));
--            a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n);
--            a_src->meta.wi = n;
--          }
--          v_w_mark = ((uint64_t)(iop_v_w - io0_v_w));
--          v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
--          {
--            u_w.meta.wi = ((size_t)(iop_v_w - u_w.data.ptr));
--            if (a_src) {
--              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--            }
--            wuffs_base__status t_0 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, v_w, a_src, wuffs_base__utility__empty_slice_u8());
--            v_zlib_status = t_0;
--            iop_v_w = u_w.data.ptr + u_w.meta.wi;
--            if (a_src) {
--              iop_a_src = a_src->data.ptr + a_src->meta.ri;
--            }
--          }
--          if ( ! self->private_impl.f_ignore_checksum) {
--            wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__io__since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
--          }
--          wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)(wuffs_base__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))))));
--          wuffs_base__u64__sat_add_indirect(&self->private_impl.f_workbuf_wi, wuffs_base__io__count_since(v_w_mark, ((uint64_t)(iop_v_w - io0_v_w))));
--          io2_a_src = o_1_io2_a_src;
--          if (a_src) {
--            a_src->meta.closed = o_1_closed_a_src;
--            a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
--          }
--        }
--        v_w = o_0_v_w;
--        iop_v_w = o_0_iop_v_w;
--        io0_v_w = o_0_io0_v_w;
--        io1_v_w = o_0_io1_v_w;
--        io2_v_w = o_0_io2_v_w;
-+        wuffs_base__status t_0 = wuffs_wbmp__decoder__do_decode_frame(self,
-+            a_dst,
-+            a_src,
-+            a_blend,
-+            a_workbuf,
-+            a_opts);
-+        v_status = t_0;
-       }
--      if (wuffs_base__status__is_ok(&v_zlib_status)) {
--        if (self->private_impl.f_chunk_length > 0u) {
--          status = wuffs_base__make_status(wuffs_base__error__too_much_data);
--          goto exit;
--        }
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--          uint32_t t_1;
--          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--            t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--            iop_a_src += 4;
--          } else {
--            self->private_data.s_decode_pass[0].scratch = 0;
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--            while (true) {
--              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                goto suspend;
--              }
--              uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch;
--              uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFFu));
--              *scratch >>= 8;
--              *scratch <<= 8;
--              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
--              if (num_bits_1 == 24) {
--                t_1 = ((uint32_t)(*scratch >> 32));
--                break;
--              }
--              num_bits_1 += 8u;
--              *scratch |= ((uint64_t)(num_bits_1));
--            }
--          }
--          v_checksum_want = t_1;
--        }
--        if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_chunk_type_array[0u] == 73u)) {
--          v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__utility__empty_slice_u8());
--          if (v_checksum_have != v_checksum_want) {
--            status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
--            goto exit;
--          }
--        }
--        break;
--      } else if (v_zlib_status.repr == wuffs_base__suspension__short_write) {
--        if ((1u <= self->private_impl.f_interlace_pass) && (self->private_impl.f_interlace_pass <= 6u)) {
--          break;
--        }
--        status = wuffs_base__make_status(wuffs_base__error__too_much_data);
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_wbmp__error__truncated_input);
-         goto exit;
--      } else if (v_zlib_status.repr != wuffs_base__suspension__short_read) {
--        status = v_zlib_status;
--        if (wuffs_base__status__is_error(&status)) {
--          goto exit;
--        } else if (wuffs_base__status__is_suspension(&status)) {
--          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
--          goto exit;
--        }
--        goto ok;
--      } else if (self->private_impl.f_chunk_length == 0u) {
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--          uint32_t t_2;
--          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--            t_2 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--            iop_a_src += 4;
--          } else {
--            self->private_data.s_decode_pass[0].scratch = 0;
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--            while (true) {
--              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                goto suspend;
--              }
--              uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch;
--              uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFFu));
--              *scratch >>= 8;
--              *scratch <<= 8;
--              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
--              if (num_bits_2 == 24) {
--                t_2 = ((uint32_t)(*scratch >> 32));
--                break;
--              }
--              num_bits_2 += 8u;
--              *scratch |= ((uint64_t)(num_bits_2));
--            }
--          }
--          v_checksum_want = t_2;
--        }
--        if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_chunk_type_array[0u] == 73u)) {
--          v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__utility__empty_slice_u8());
--          if (v_checksum_have != v_checksum_want) {
--            status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
--            goto exit;
--          }
--        }
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
--          uint32_t t_3;
--          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--            t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--            iop_a_src += 4;
--          } else {
--            self->private_data.s_decode_pass[0].scratch = 0;
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--            while (true) {
--              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                goto suspend;
--              }
--              uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch;
--              uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFFu));
--              *scratch >>= 8;
--              *scratch <<= 8;
--              *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
--              if (num_bits_3 == 24) {
--                t_3 = ((uint32_t)(*scratch >> 32));
--                break;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+
-+    ok:
-+    self->private_impl.p_decode_frame = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func wbmp.decoder.do_decode_frame
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_wbmp__decoder__do_decode_frame(
-+    wuffs_wbmp__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+  wuffs_base__pixel_format v_dst_pixfmt = {0};
-+  uint32_t v_dst_bits_per_pixel = 0;
-+  uint64_t v_dst_bytes_per_pixel = 0;
-+  uint64_t v_dst_x_in_bytes = 0;
-+  uint32_t v_dst_x = 0;
-+  uint32_t v_dst_y = 0;
-+  wuffs_base__table_u8 v_tab = {0};
-+  wuffs_base__slice_u8 v_dst = {0};
-+  uint8_t v_src[1] = {0};
-+  uint8_t v_c8 = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame;
-+  if (coro_susp_point) {
-+    v_dst_bytes_per_pixel = self->private_data.s_do_decode_frame.v_dst_bytes_per_pixel;
-+    v_dst_x = self->private_data.s_do_decode_frame.v_dst_x;
-+    v_dst_y = self->private_data.s_do_decode_frame.v_dst_y;
-+    memcpy(v_src, self->private_data.s_do_decode_frame.v_src, sizeof(v_src));
-+    v_c8 = self->private_data.s_do_decode_frame.v_c8;
-+  }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_call_sequence == 64u) {
-+    } else if (self->private_impl.f_call_sequence < 64u) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      status = wuffs_wbmp__decoder__do_decode_frame_config(self, NULL, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+    } else {
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-+    }
-+    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
-+        wuffs_base__pixel_buffer__pixel_format(a_dst),
-+        wuffs_base__pixel_buffer__palette(a_dst),
-+        wuffs_base__utility__make_pixel_format(536870920u),
-+        wuffs_base__utility__empty_slice_u8(),
-+        a_blend);
-+    if ( ! wuffs_base__status__is_ok(&v_status)) {
-+      status = v_status;
-+      if (wuffs_base__status__is_error(&status)) {
-+        goto exit;
-+      } else if (wuffs_base__status__is_suspension(&status)) {
-+        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+        goto exit;
-+      }
-+      goto ok;
-+    }
-+    v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
-+    v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
-+    if ((v_dst_bits_per_pixel & 7u) != 0u) {
-+      status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+      goto exit;
-+    }
-+    v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8u)));
-+    if (self->private_impl.f_width > 0u) {
-+      v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
-+      while (v_dst_y < self->private_impl.f_height) {
-+        v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, v_dst_y);
-+        v_dst_x = 0u;
-+        while (v_dst_x < self->private_impl.f_width) {
-+          if ((v_dst_x & 7u) == 0u) {
-+            while (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
-+              v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
-+              v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, v_dst_y);
-+              v_dst_x_in_bytes = (((uint64_t)(v_dst_x)) * v_dst_bytes_per_pixel);
-+              if (v_dst_x_in_bytes <= ((uint64_t)(v_dst.len))) {
-+                v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_x_in_bytes);
-               }
--              num_bits_3 += 8u;
--              *scratch |= ((uint64_t)(num_bits_3));
-             }
-+            v_c8 = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
-+            iop_a_src += 1u;
-           }
--          self->private_impl.f_chunk_length = t_3;
--        }
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
--          uint32_t t_4;
--          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--            t_4 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--            iop_a_src += 4;
-+          if (((uint8_t)(v_c8 & 128u)) == 0u) {
-+            v_src[0u] = 0u;
-           } else {
--            self->private_data.s_decode_pass[0].scratch = 0;
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
--            while (true) {
--              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                goto suspend;
--              }
--              uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch;
--              uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
--              *scratch <<= 8;
--              *scratch >>= 8;
--              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
--              if (num_bits_4 == 24) {
--                t_4 = ((uint32_t)(*scratch));
--                break;
--              }
--              num_bits_4 += 8u;
--              *scratch |= ((uint64_t)(num_bits_4)) << 56;
--            }
--          }
--          self->private_impl.f_chunk_type = t_4;
--        }
--        if (self->private_impl.f_chunk_type_array[0u] == 73u) {
--          if (self->private_impl.f_chunk_type != 1413563465u) {
--            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--            goto exit;
--          }
--          if ( ! self->private_impl.f_ignore_checksum) {
--            wuffs_base__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
--                sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
--            wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4));
--          }
--        } else {
--          if ((self->private_impl.f_chunk_type != 1413571686u) || (self->private_impl.f_chunk_length < 4u)) {
--            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--            goto exit;
--          }
--          self->private_impl.f_chunk_length -= 4u;
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
--            uint32_t t_5;
--            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--              t_5 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
--              iop_a_src += 4;
--            } else {
--              self->private_data.s_decode_pass[0].scratch = 0;
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
--              while (true) {
--                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                  goto suspend;
--                }
--                uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch;
--                uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFFu));
--                *scratch >>= 8;
--                *scratch <<= 8;
--                *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5);
--                if (num_bits_5 == 24) {
--                  t_5 = ((uint32_t)(*scratch >> 32));
--                  break;
--                }
--                num_bits_5 += 8u;
--                *scratch |= ((uint64_t)(num_bits_5));
--              }
--            }
--            v_seq_num = t_5;
-+            v_src[0u] = 255u;
-           }
--          if (v_seq_num != self->private_impl.f_next_animation_seq_num) {
--            status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number);
--            goto exit;
--          } else if (self->private_impl.f_next_animation_seq_num >= 4294967295u) {
--            status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
--            goto exit;
-+          v_c8 = ((uint8_t)((((uint32_t)(v_c8)) << 1u)));
-+          wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, wuffs_base__utility__empty_slice_u8(), wuffs_base__make_slice_u8(v_src, 1));
-+          if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) {
-+            v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel);
-           }
--          self->private_impl.f_next_animation_seq_num += 1u;
-+          v_dst_x += 1u;
-         }
--        continue;
--      } else if (((uint64_t)(io2_a_src - iop_a_src)) > 0u) {
--        status = wuffs_base__make_status(wuffs_png__error__internal_error_zlib_decoder_did_not_exhaust_its_input);
--        goto exit;
--      }
--      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11);
--    }
--    if (self->private_impl.f_workbuf_wi != self->private_impl.f_pass_workbuf_length) {
--      status = wuffs_base__make_status(wuffs_base__error__not_enough_data);
--      goto exit;
--    } else if (0u < ((uint64_t)(a_workbuf.len))) {
--      if (a_workbuf.ptr[0u] == 4u) {
--        a_workbuf.ptr[0u] = 1u;
-+        v_dst_y += 1u;
-       }
-     }
-+    self->private_impl.f_call_sequence = 96u;
- 
-     ok:
--    self->private_impl.p_decode_pass[0] = 0;
-+    self->private_impl.p_do_decode_frame = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_pass[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.p_do_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_do_decode_frame.v_dst_bytes_per_pixel = v_dst_bytes_per_pixel;
-+  self->private_data.s_do_decode_frame.v_dst_x = v_dst_x;
-+  self->private_data.s_do_decode_frame.v_dst_y = v_dst_y;
-+  memcpy(self->private_data.s_do_decode_frame.v_src, v_src, sizeof(v_src));
-+  self->private_data.s_do_decode_frame.v_c8 = v_c8;
- 
-   goto exit;
-   exit:
-@@ -57879,12 +71324,12 @@ wuffs_png__decoder__decode_pass(
-   return status;
- }
- 
--// -------- func png.decoder.frame_dirty_rect
-+// -------- func wbmp.decoder.frame_dirty_rect
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
--wuffs_png__decoder__frame_dirty_rect(
--    const wuffs_png__decoder* self) {
-+wuffs_wbmp__decoder__frame_dirty_rect(
-+    const wuffs_wbmp__decoder* self) {
-   if (!self) {
-     return wuffs_base__utility__empty_rect_ie_u32();
-   }
-@@ -57894,18 +71339,18 @@ wuffs_png__decoder__frame_dirty_rect(
-   }
- 
-   return wuffs_base__utility__make_rect_ie_u32(
--      self->private_impl.f_frame_rect_x0,
--      self->private_impl.f_frame_rect_y0,
--      self->private_impl.f_frame_rect_x1,
--      self->private_impl.f_frame_rect_y1);
-+      0u,
-+      0u,
-+      self->private_impl.f_width,
-+      self->private_impl.f_height);
- }
- 
--// -------- func png.decoder.num_animation_loops
-+// -------- func wbmp.decoder.num_animation_loops
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_png__decoder__num_animation_loops(
--    const wuffs_png__decoder* self) {
-+wuffs_wbmp__decoder__num_animation_loops(
-+    const wuffs_wbmp__decoder* self) {
-   if (!self) {
-     return 0;
-   }
-@@ -57914,15 +71359,15 @@ wuffs_png__decoder__num_animation_loops(
-     return 0;
-   }
- 
--  return self->private_impl.f_num_animation_loops_value;
-+  return 0u;
- }
- 
--// -------- func png.decoder.num_decoded_frame_configs
-+// -------- func wbmp.decoder.num_decoded_frame_configs
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_png__decoder__num_decoded_frame_configs(
--    const wuffs_png__decoder* self) {
-+wuffs_wbmp__decoder__num_decoded_frame_configs(
-+    const wuffs_wbmp__decoder* self) {
-   if (!self) {
-     return 0;
-   }
-@@ -57931,15 +71376,18 @@ wuffs_png__decoder__num_decoded_frame_configs(
-     return 0;
-   }
- 
--  return ((uint64_t)(self->private_impl.f_num_decoded_frame_configs_value));
-+  if (self->private_impl.f_call_sequence > 32u) {
-+    return 1u;
-+  }
-+  return 0u;
- }
- 
--// -------- func png.decoder.num_decoded_frames
-+// -------- func wbmp.decoder.num_decoded_frames
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_png__decoder__num_decoded_frames(
--    const wuffs_png__decoder* self) {
-+wuffs_wbmp__decoder__num_decoded_frames(
-+    const wuffs_wbmp__decoder* self) {
-   if (!self) {
-     return 0;
-   }
-@@ -57948,15 +71396,18 @@ wuffs_png__decoder__num_decoded_frames(
-     return 0;
-   }
- 
--  return ((uint64_t)(self->private_impl.f_num_decoded_frames_value));
-+  if (self->private_impl.f_call_sequence > 64u) {
-+    return 1u;
-+  }
-+  return 0u;
- }
- 
--// -------- func png.decoder.restart_frame
-+// -------- func wbmp.decoder.restart_frame
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_png__decoder__restart_frame(
--    wuffs_png__decoder* self,
-+wuffs_wbmp__decoder__restart_frame(
-+    wuffs_wbmp__decoder* self,
-     uint64_t a_index,
-     uint64_t a_io_position) {
-   if (!self) {
-@@ -57971,154 +71422,514 @@ wuffs_png__decoder__restart_frame(
- 
-   if (self->private_impl.f_call_sequence < 32u) {
-     return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
--  } else if ((a_index >= ((uint64_t)(self->private_impl.f_num_animation_frames_value))) || ((a_index == 0u) && (a_io_position != self->private_impl.f_first_config_io_position))) {
-+  }
-+  if (a_index != 0u) {
-     return wuffs_base__make_status(wuffs_base__error__bad_argument);
-   }
-   self->private_impl.f_call_sequence = 40u;
--  if (self->private_impl.f_interlace_pass >= 1u) {
--    self->private_impl.f_interlace_pass = 1u;
--  }
-   self->private_impl.f_frame_config_io_position = a_io_position;
--  self->private_impl.f_num_decoded_frame_configs_value = ((uint32_t)(a_index));
--  self->private_impl.f_num_decoded_frames_value = self->private_impl.f_num_decoded_frame_configs_value;
-   return wuffs_base__make_status(NULL);
- }
- 
--// -------- func png.decoder.set_report_metadata
-+// -------- func wbmp.decoder.set_report_metadata
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_png__decoder__set_report_metadata(
--    wuffs_png__decoder* self,
-+wuffs_wbmp__decoder__set_report_metadata(
-+    wuffs_wbmp__decoder* self,
-     uint32_t a_fourcc,
-     bool a_report) {
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+// -------- func wbmp.decoder.tell_me_more
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_wbmp__decoder__tell_me_more(
-+    wuffs_wbmp__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__more_information* a_minfo,
-+    wuffs_base__io_buffer* a_src) {
-   if (!self) {
--    return wuffs_base__make_empty_struct();
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
-   if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_empty_struct();
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_dst || !a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 4)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-   }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  if (a_fourcc == 1128813133u) {
--    self->private_impl.f_report_metadata_chrm = a_report;
--  } else if (a_fourcc == 1163413830u) {
--    self->private_impl.f_report_metadata_exif = a_report;
--  } else if (a_fourcc == 1195461953u) {
--    self->private_impl.f_report_metadata_gama = a_report;
--  } else if (a_fourcc == 1229144912u) {
--    self->private_impl.f_report_metadata_iccp = a_report;
--  } else if (a_fourcc == 1263947808u) {
--    self->private_impl.f_report_metadata_kvp = a_report;
--  } else if (a_fourcc == 1397901122u) {
--    self->private_impl.f_report_metadata_srgb = a_report;
-+  status = wuffs_base__make_status(wuffs_base__error__no_more_information);
-+  goto exit;
-+
-+  goto ok;
-+  ok:
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func wbmp.decoder.workbuf_len
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_wbmp__decoder__workbuf_len(
-+    const wuffs_wbmp__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+
-+  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
-+}
-+
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP)
-+
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WEBP)
-+
-+// ---------------- Status Codes Implementations
-+
-+const char wuffs_webp__error__bad_huffman_code_over_subscribed[] = "#webp: bad Huffman code (over-subscribed)";
-+const char wuffs_webp__error__bad_huffman_code_under_subscribed[] = "#webp: bad Huffman code (under-subscribed)";
-+const char wuffs_webp__error__bad_huffman_code[] = "#webp: bad Huffman code";
-+const char wuffs_webp__error__bad_back_reference[] = "#webp: bad back-reference";
-+const char wuffs_webp__error__bad_color_cache[] = "#webp: bad color cache";
-+const char wuffs_webp__error__bad_header[] = "#webp: bad header";
-+const char wuffs_webp__error__bad_transform[] = "#webp: bad transform";
-+const char wuffs_webp__error__short_chunk[] = "#webp: short chunk";
-+const char wuffs_webp__error__truncated_input[] = "#webp: truncated input";
-+const char wuffs_webp__error__unsupported_number_of_huffman_groups[] = "#webp: unsupported number of Huffman groups";
-+const char wuffs_webp__error__unsupported_transform_after_color_indexing_transform[] = "#webp: unsupported transform after color indexing transform";
-+const char wuffs_webp__error__unsupported_webp_file[] = "#webp: unsupported WebP file";
-+const char wuffs_webp__error__internal_error_inconsistent_huffman_code[] = "#webp: internal error: inconsistent Huffman code";
-+const char wuffs_webp__error__internal_error_inconsistent_dst_buffer[] = "#webp: internal error: inconsistent dst buffer";
-+const char wuffs_webp__error__internal_error_inconsistent_n_bits[] = "#webp: internal error: inconsistent n_bits";
-+
-+// ---------------- Private Consts
-+
-+static const uint8_t
-+WUFFS_WEBP__CODE_LENGTH_CODE_ORDER[19] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  17u, 18u, 0u, 1u, 2u, 3u, 4u, 5u,
-+  16u, 6u, 7u, 8u, 9u, 10u, 11u, 12u,
-+  13u, 14u, 15u,
-+};
-+
-+static const uint8_t
-+WUFFS_WEBP__REPEAT_N_BITS[4] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  2u, 3u, 7u, 0u,
-+};
-+
-+static const uint8_t
-+WUFFS_WEBP__REPEAT_COUNTS[4] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  3u, 3u, 11u, 0u,
-+};
-+
-+static const uint16_t
-+WUFFS_WEBP__HUFFMAN_TABLE_BASE_OFFSETS[5] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  1612u, 0u, 511u, 1022u, 1533u,
-+};
-+
-+static const uint8_t
-+WUFFS_WEBP__DISTANCE_MAP[120] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  24u, 7u, 23u, 25u, 40u, 6u, 39u, 41u,
-+  22u, 26u, 38u, 42u, 56u, 5u, 55u, 57u,
-+  21u, 27u, 54u, 58u, 37u, 43u, 72u, 4u,
-+  71u, 73u, 20u, 28u, 53u, 59u, 70u, 74u,
-+  36u, 44u, 88u, 69u, 75u, 52u, 60u, 3u,
-+  87u, 89u, 19u, 29u, 86u, 90u, 35u, 45u,
-+  68u, 76u, 85u, 91u, 51u, 61u, 104u, 2u,
-+  103u, 105u, 18u, 30u, 102u, 106u, 34u, 46u,
-+  84u, 92u, 67u, 77u, 101u, 107u, 50u, 62u,
-+  120u, 1u, 119u, 121u, 83u, 93u, 17u, 31u,
-+  100u, 108u, 66u, 78u, 118u, 122u, 33u, 47u,
-+  117u, 123u, 49u, 63u, 99u, 109u, 82u, 94u,
-+  0u, 116u, 124u, 65u, 79u, 16u, 32u, 98u,
-+  110u, 48u, 115u, 125u, 81u, 95u, 64u, 114u,
-+  126u, 97u, 111u, 80u, 113u, 127u, 96u, 112u,
-+};
-+
-+// ---------------- Private Initializer Prototypes
-+
-+// ---------------- Private Function Prototypes
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__decode_huffman_groups(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__io_buffer* a_src,
-+    uint32_t a_n_huffman_groups);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__decode_huffman_tree(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__io_buffer* a_src,
-+    uint32_t a_hg,
-+    uint32_t a_ht);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__decode_huffman_tree_simple(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__io_buffer* a_src,
-+    uint32_t a_hg,
-+    uint32_t a_ht);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__decode_code_length_code_lengths(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__build_code_lengths_huffman_nodes(
-+    wuffs_webp__decoder* self);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__build_huffman_nodes(
-+    wuffs_webp__decoder* self,
-+    uint32_t a_hg,
-+    uint32_t a_ht);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__build_code_lengths(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__decode_pixels_slow(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__slice_u8 a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    uint32_t a_width,
-+    uint32_t a_height,
-+    wuffs_base__slice_u8 a_tile_data,
-+    uint32_t a_tile_size_log2);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_webp__decoder__apply_transform_predictor(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__slice_u8 a_pix,
-+    wuffs_base__slice_u8 a_tile_data);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint32_t
-+wuffs_webp__decoder__absolute_difference(
-+    const wuffs_webp__decoder* self,
-+    uint32_t a_a,
-+    uint32_t a_b);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint8_t
-+wuffs_webp__decoder__mode12(
-+    const wuffs_webp__decoder* self,
-+    uint8_t a_l,
-+    uint8_t a_t,
-+    uint8_t a_tl);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint8_t
-+wuffs_webp__decoder__mode13(
-+    const wuffs_webp__decoder* self,
-+    uint8_t a_l,
-+    uint8_t a_t,
-+    uint8_t a_tl);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_webp__decoder__apply_transform_cross_color(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__slice_u8 a_pix,
-+    wuffs_base__slice_u8 a_tile_data);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_webp__decoder__apply_transform_subtract_green(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__slice_u8 a_pix);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_webp__decoder__apply_transform_color_indexing(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__slice_u8 a_pix);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__do_decode_image_config(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__image_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__do_decode_image_config_limited(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__do_decode_image_config_limited_vp8l(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__do_decode_frame_config(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__frame_config* a_dst,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__do_decode_frame(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__decode_transform(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__decode_color_cache_parameters(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__decode_hg_table(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__io_buffer* a_src,
-+    uint32_t a_width,
-+    wuffs_base__slice_u8 a_workbuf);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__decode_pixels(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__slice_u8 a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    uint32_t a_width,
-+    uint32_t a_height,
-+    wuffs_base__slice_u8 a_tile_data,
-+    uint32_t a_tile_size_log2);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__swizzle(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__slice_u8 a_src,
-+    wuffs_base__pixel_blend a_blend);
-+
-+// ---------------- VTables
-+
-+const wuffs_base__image_decoder__func_ptrs
-+wuffs_webp__decoder__func_ptrs_for__wuffs_base__image_decoder = {
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__pixel_buffer*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__pixel_blend,
-+      wuffs_base__slice_u8,
-+      wuffs_base__decode_frame_options*))(&wuffs_webp__decoder__decode_frame),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__frame_config*,
-+      wuffs_base__io_buffer*))(&wuffs_webp__decoder__decode_frame_config),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__image_config*,
-+      wuffs_base__io_buffer*))(&wuffs_webp__decoder__decode_image_config),
-+  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_webp__decoder__frame_dirty_rect),
-+  (uint64_t(*)(const void*,
-+      uint32_t))(&wuffs_webp__decoder__get_quirk),
-+  (uint32_t(*)(const void*))(&wuffs_webp__decoder__num_animation_loops),
-+  (uint64_t(*)(const void*))(&wuffs_webp__decoder__num_decoded_frame_configs),
-+  (uint64_t(*)(const void*))(&wuffs_webp__decoder__num_decoded_frames),
-+  (wuffs_base__status(*)(void*,
-+      uint64_t,
-+      uint64_t))(&wuffs_webp__decoder__restart_frame),
-+  (wuffs_base__status(*)(void*,
-+      uint32_t,
-+      uint64_t))(&wuffs_webp__decoder__set_quirk),
-+  (wuffs_base__empty_struct(*)(void*,
-+      uint32_t,
-+      bool))(&wuffs_webp__decoder__set_report_metadata),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__more_information*,
-+      wuffs_base__io_buffer*))(&wuffs_webp__decoder__tell_me_more),
-+  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_webp__decoder__workbuf_len),
-+};
-+
-+// ---------------- Initializer Implementations
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_webp__decoder__initialize(
-+    wuffs_webp__decoder* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options){
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+  }
-+  if (sizeof(*self) != sizeof_star_self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  }
-+  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
-+      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+  }
-+
-+  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
-+    // The whole point of this if-check is to detect an uninitialized *self.
-+    // We disable the warning on GCC. Clang-5.0 does not have this warning.
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+#endif
-+    if (self->private_impl.magic != 0) {
-+      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+    }
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+  } else {
-+    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
-+      memset(self, 0, sizeof(*self));
-+      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-+    } else {
-+      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+    }
-+  }
-+
-+  self->private_impl.magic = WUFFS_BASE__MAGIC;
-+  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
-+      wuffs_base__image_decoder__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
-+      (const void*)(&wuffs_webp__decoder__func_ptrs_for__wuffs_base__image_decoder);
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+wuffs_webp__decoder*
-+wuffs_webp__decoder__alloc(void) {
-+  wuffs_webp__decoder* x =
-+      (wuffs_webp__decoder*)(calloc(1, sizeof(wuffs_webp__decoder)));
-+  if (!x) {
-+    return NULL;
-   }
--  return wuffs_base__make_empty_struct();
-+  if (wuffs_webp__decoder__initialize(
-+      x, sizeof(wuffs_webp__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+    free(x);
-+    return NULL;
-+  }
-+  return x;
- }
- 
--// -------- func png.decoder.tell_me_more
-+size_t
-+sizeof__wuffs_webp__decoder(void) {
-+  return sizeof(wuffs_webp__decoder);
-+}
-+
-+// ---------------- Function Implementations
-+
-+// -------- func webp.decoder.decode_huffman_groups
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_png__decoder__tell_me_more(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__more_information* a_minfo,
--    wuffs_base__io_buffer* a_src) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--  if (!a_dst || !a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 4)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
--  }
--  self->private_impl.active_coroutine = 0;
-+static wuffs_base__status
-+wuffs_webp__decoder__decode_huffman_groups(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__io_buffer* a_src,
-+    uint32_t a_n_huffman_groups) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+  uint32_t v_hg = 0;
-+  uint32_t v_ht = 0;
- 
--  uint32_t coro_susp_point = self->private_impl.p_tell_me_more[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_huffman_groups;
-+  if (coro_susp_point) {
-+    v_hg = self->private_data.s_decode_huffman_groups.v_hg;
-+    v_ht = self->private_data.s_decode_huffman_groups.v_ht;
-+  }
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    while (true) {
--      {
--        wuffs_base__status t_0 = wuffs_png__decoder__do_tell_me_more(self, a_dst, a_minfo, a_src);
--        v_status = t_0;
--      }
--      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_png__error__truncated_input);
--        goto exit;
-+    v_hg = 0u;
-+    while (v_hg < a_n_huffman_groups) {
-+      v_ht = 0u;
-+      while (v_ht < 5u) {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        status = wuffs_webp__decoder__decode_huffman_tree(self, a_src, v_hg, v_ht);
-+        if (status.repr) {
-+          goto suspend;
-+        }
-+        v_ht += 1u;
-       }
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+      v_hg += 1u;
-     }
- 
-+    goto ok;
-     ok:
--    self->private_impl.p_tell_me_more[0] = 0;
-+    self->private_impl.p_decode_huffman_groups = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_tell_me_more[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 4 : 0;
-+  self->private_impl.p_decode_huffman_groups = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_huffman_groups.v_hg = v_hg;
-+  self->private_data.s_decode_huffman_groups.v_ht = v_ht;
- 
-   goto exit;
-   exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--  }
-   return status;
- }
- 
--// -------- func png.decoder.do_tell_me_more
-+// -------- func webp.decoder.decode_huffman_tree
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_png__decoder__do_tell_me_more(
--    wuffs_png__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__more_information* a_minfo,
--    wuffs_base__io_buffer* a_src) {
-+wuffs_webp__decoder__decode_huffman_tree(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__io_buffer* a_src,
-+    uint32_t a_hg,
-+    uint32_t a_ht) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint8_t v_c = 0;
--  uint16_t v_c2 = 0;
--  wuffs_base__io_buffer u_w = wuffs_base__empty_io_buffer();
--  wuffs_base__io_buffer* v_w = &u_w;
--  uint8_t* iop_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io0_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io1_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io2_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint64_t v_num_written = 0;
--  uint64_t v_w_mark = 0;
--  uint64_t v_r_mark = 0;
--  wuffs_base__status v_zlib_status = wuffs_base__make_status(NULL);
-+  uint8_t v_c8 = 0;
-+  uint32_t v_use_simple = 0;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--  uint8_t* iop_a_dst = NULL;
--  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_dst && a_dst->data.ptr) {
--    io0_a_dst = a_dst->data.ptr;
--    io1_a_dst = io0_a_dst + a_dst->meta.wi;
--    iop_a_dst = io1_a_dst;
--    io2_a_dst = io0_a_dst + a_dst->data.len;
--    if (a_dst->meta.closed) {
--      io2_a_dst = iop_a_dst;
--    }
--  }
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-   const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -58130,462 +71941,105 @@ wuffs_png__decoder__do_tell_me_more(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_tell_me_more[0];
--  if (coro_susp_point) {
--    v_zlib_status = self->private_data.s_do_tell_me_more[0].v_zlib_status;
--  }
-+  uint32_t coro_susp_point = self->private_impl.p_decode_huffman_tree;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if ((self->private_impl.f_call_sequence & 16u) == 0u) {
--      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
--      goto exit;
--    }
--    if (self->private_impl.f_metadata_fourcc == 0u) {
--      status = wuffs_base__make_status(wuffs_base__error__no_more_information);
--      goto exit;
-+    if (a_ht >= 4u) {
-+      self->private_impl.f_ht_n_symbols = 40u;
-+    } else if (a_ht > 0u) {
-+      self->private_impl.f_ht_n_symbols = 256u;
-+    } else if (self->private_impl.f_color_cache_bits == 0u) {
-+      self->private_impl.f_ht_n_symbols = 280u;
-+    } else {
-+      self->private_impl.f_ht_n_symbols = (280u + (((uint32_t)(1u)) << self->private_impl.f_color_cache_bits));
-     }
--    do {
--      if (self->private_impl.f_metadata_flavor == 3u) {
--        while (true) {
--          if (wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))) != self->private_impl.f_metadata_y) {
--            status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position);
--            goto exit;
--          } else if (a_minfo != NULL) {
--            wuffs_base__more_information__set(a_minfo,
--                self->private_impl.f_metadata_flavor,
--                self->private_impl.f_metadata_fourcc,
--                self->private_impl.f_metadata_x,
--                self->private_impl.f_metadata_y,
--                self->private_impl.f_metadata_z);
--          }
--          if (self->private_impl.f_metadata_y >= self->private_impl.f_metadata_z) {
--            goto label__goto_done__break;
--          }
--          self->private_impl.f_metadata_y = self->private_impl.f_metadata_z;
--          status = wuffs_base__make_status(wuffs_base__suspension__even_more_information);
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    if (self->private_impl.f_n_bits < 1u) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-         }
-+        uint8_t t_0 = *iop_a_src++;
-+        v_c8 = t_0;
-       }
--      if (self->private_impl.f_metadata_is_zlib_compressed) {
--        if (self->private_impl.f_zlib_is_dirty) {
--          wuffs_base__ignore_status(wuffs_zlib__decoder__initialize(&self->private_data.f_zlib,
--              sizeof (wuffs_zlib__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
--          if (self->private_impl.f_ignore_checksum) {
--            wuffs_zlib__decoder__set_quirk(&self->private_data.f_zlib, 1u, 1u);
--          }
--        }
--        self->private_impl.f_zlib_is_dirty = true;
--        self->private_impl.f_ztxt_hist_pos = 0u;
-+      self->private_impl.f_bits = ((uint32_t)(v_c8));
-+      self->private_impl.f_n_bits = 8u;
-+    }
-+    v_use_simple = (self->private_impl.f_bits & 1u);
-+    self->private_impl.f_bits >>= 1u;
-+    self->private_impl.f_n_bits -= 1u;
-+    if (v_use_simple != 0u) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-       }
--      label__loop__continue:;
--      while (true) {
--        if (a_minfo != NULL) {
--          wuffs_base__more_information__set(a_minfo,
--              self->private_impl.f_metadata_flavor,
--              self->private_impl.f_metadata_fourcc,
--              self->private_impl.f_metadata_x,
--              self->private_impl.f_metadata_y,
--              self->private_impl.f_metadata_z);
--        }
--        if (self->private_impl.f_metadata_flavor != 4u) {
--          break;
--        }
--        if (self->private_impl.f_metadata_is_zlib_compressed) {
--          if (self->private_impl.f_chunk_type == 1346585449u) {
--            {
--              const bool o_0_closed_a_src = a_src->meta.closed;
--              const uint8_t *o_0_io2_a_src = io2_a_src;
--              wuffs_base__io_reader__limit(&io2_a_src, iop_a_src,
--                  ((uint64_t)(self->private_impl.f_chunk_length)));
--              if (a_src) {
--                size_t n = ((size_t)(io2_a_src - a_src->data.ptr));
--                a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n);
--                a_src->meta.wi = n;
--              }
--              v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
--              {
--                if (a_dst) {
--                  a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--                }
--                if (a_src) {
--                  a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--                }
--                wuffs_base__status t_0 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, a_dst, a_src, wuffs_base__utility__empty_slice_u8());
--                v_zlib_status = t_0;
--                if (a_dst) {
--                  iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
--                }
--                if (a_src) {
--                  iop_a_src = a_src->data.ptr + a_src->meta.ri;
--                }
--              }
--              wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)(wuffs_base__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))))));
--              io2_a_src = o_0_io2_a_src;
--              if (a_src) {
--                a_src->meta.closed = o_0_closed_a_src;
--                a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
--              }
--            }
--            if (wuffs_base__status__is_ok(&v_zlib_status)) {
--              self->private_impl.f_metadata_is_zlib_compressed = false;
--              break;
--            } else if ( ! wuffs_base__status__is_suspension(&v_zlib_status)) {
--              status = v_zlib_status;
--              if (wuffs_base__status__is_error(&status)) {
--                goto exit;
--              } else if (wuffs_base__status__is_suspension(&status)) {
--                status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
--                goto exit;
--              }
--              goto ok;
--            }
--            status = v_zlib_status;
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
--          } else if (self->private_impl.f_chunk_type == 1951945833u) {
--            {
--              const bool o_1_closed_a_src = a_src->meta.closed;
--              const uint8_t *o_1_io2_a_src = io2_a_src;
--              wuffs_base__io_reader__limit(&io2_a_src, iop_a_src,
--                  ((uint64_t)(self->private_impl.f_chunk_length)));
--              if (a_src) {
--                size_t n = ((size_t)(io2_a_src - a_src->data.ptr));
--                a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n);
--                a_src->meta.wi = n;
--              }
--              v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
--              {
--                if (a_dst) {
--                  a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--                }
--                if (a_src) {
--                  a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--                }
--                wuffs_base__status t_1 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, a_dst, a_src, wuffs_base__utility__empty_slice_u8());
--                v_zlib_status = t_1;
--                if (a_dst) {
--                  iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
--                }
--                if (a_src) {
--                  iop_a_src = a_src->data.ptr + a_src->meta.ri;
--                }
--              }
--              wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)(wuffs_base__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))))));
--              io2_a_src = o_1_io2_a_src;
--              if (a_src) {
--                a_src->meta.closed = o_1_closed_a_src;
--                a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
--              }
--            }
--            if (wuffs_base__status__is_ok(&v_zlib_status)) {
--              self->private_impl.f_metadata_is_zlib_compressed = false;
--              break;
--            } else if ( ! wuffs_base__status__is_suspension(&v_zlib_status)) {
--              status = v_zlib_status;
--              if (wuffs_base__status__is_error(&status)) {
--                goto exit;
--              } else if (wuffs_base__status__is_suspension(&status)) {
--                status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
--                goto exit;
--              }
--              goto ok;
--            }
--            status = v_zlib_status;
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
--          } else if (self->private_impl.f_chunk_type == 1951945850u) {
--            if (self->private_impl.f_ztxt_ri == self->private_impl.f_ztxt_wi) {
--              {
--                wuffs_base__io_buffer* o_2_v_w = v_w;
--                uint8_t *o_2_iop_v_w = iop_v_w;
--                uint8_t *o_2_io0_v_w = io0_v_w;
--                uint8_t *o_2_io1_v_w = io1_v_w;
--                uint8_t *o_2_io2_v_w = io2_v_w;
--                v_w = wuffs_base__io_writer__set(
--                    &u_w,
--                    &iop_v_w,
--                    &io0_v_w,
--                    &io1_v_w,
--                    &io2_v_w,
--                    wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024),
--                    self->private_impl.f_ztxt_hist_pos);
--                {
--                  const bool o_3_closed_a_src = a_src->meta.closed;
--                  const uint8_t *o_3_io2_a_src = io2_a_src;
--                  wuffs_base__io_reader__limit(&io2_a_src, iop_a_src,
--                      ((uint64_t)(self->private_impl.f_chunk_length)));
--                  if (a_src) {
--                    size_t n = ((size_t)(io2_a_src - a_src->data.ptr));
--                    a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n);
--                    a_src->meta.wi = n;
--                  }
--                  v_w_mark = ((uint64_t)(iop_v_w - io0_v_w));
--                  v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
--                  {
--                    u_w.meta.wi = ((size_t)(iop_v_w - u_w.data.ptr));
--                    if (a_src) {
--                      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--                    }
--                    wuffs_base__status t_2 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, v_w, a_src, wuffs_base__utility__empty_slice_u8());
--                    v_zlib_status = t_2;
--                    iop_v_w = u_w.data.ptr + u_w.meta.wi;
--                    if (a_src) {
--                      iop_a_src = a_src->data.ptr + a_src->meta.ri;
--                    }
--                  }
--                  wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)(wuffs_base__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))))));
--                  v_num_written = wuffs_base__io__count_since(v_w_mark, ((uint64_t)(iop_v_w - io0_v_w)));
--                  io2_a_src = o_3_io2_a_src;
--                  if (a_src) {
--                    a_src->meta.closed = o_3_closed_a_src;
--                    a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
--                  }
--                }
--                v_w = o_2_v_w;
--                iop_v_w = o_2_iop_v_w;
--                io0_v_w = o_2_io0_v_w;
--                io1_v_w = o_2_io1_v_w;
--                io2_v_w = o_2_io2_v_w;
--              }
--              if (v_num_written > 1024u) {
--                status = wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_i_o);
--                goto exit;
--              }
--              self->private_impl.f_ztxt_ri = 0u;
--              self->private_impl.f_ztxt_wi = ((uint32_t)(v_num_written));
--              wuffs_base__u64__sat_add_indirect(&self->private_impl.f_ztxt_hist_pos, v_num_written);
--            }
--            while (self->private_impl.f_ztxt_ri < self->private_impl.f_ztxt_wi) {
--              v_c2 = WUFFS_PNG__LATIN_1[self->private_data.f_dst_palette[self->private_impl.f_ztxt_ri]];
--              if (v_c2 == 0u) {
--                status = wuffs_base__make_status(wuffs_png__error__bad_text_chunk_not_latin_1);
--                goto exit;
--              } else if (v_c2 <= 127u) {
--                if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--                  status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
--                  goto label__loop__continue;
--                }
--                self->private_impl.f_ztxt_ri += 1u;
--                (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(v_c2))), iop_a_dst += 1);
--              } else {
--                if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 1u) {
--                  status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
--                  goto label__loop__continue;
--                }
--                self->private_impl.f_ztxt_ri += 1u;
--                (wuffs_base__poke_u16le__no_bounds_check(iop_a_dst, v_c2), iop_a_dst += 2);
--              }
--            }
--            if (wuffs_base__status__is_ok(&v_zlib_status)) {
--              self->private_impl.f_metadata_is_zlib_compressed = false;
--              break;
--            } else if ( ! wuffs_base__status__is_suspension(&v_zlib_status)) {
--              status = v_zlib_status;
--              if (wuffs_base__status__is_error(&status)) {
--                goto exit;
--              } else if (wuffs_base__status__is_suspension(&status)) {
--                status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
--                goto exit;
--              }
--              goto ok;
--            } else if (v_zlib_status.repr != wuffs_base__suspension__short_write) {
--              status = v_zlib_status;
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
--            }
--          } else {
--            status = wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_chunk_type);
--            goto exit;
--          }
--        } else if ((self->private_impl.f_chunk_type == 1951945833u) && (self->private_impl.f_metadata_fourcc == 1263947862u)) {
--          while (true) {
--            if (self->private_impl.f_chunk_length <= 0u) {
--              goto label__loop__break;
--            } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
--              goto label__loop__continue;
--            } else if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
--              goto label__loop__continue;
--            }
--            self->private_impl.f_chunk_length -= 1u;
--            v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--            iop_a_src += 1u;
--            (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_c), iop_a_dst += 1);
--          }
--        } else {
--          while (true) {
--            if (self->private_impl.f_chunk_length <= 0u) {
--              if (self->private_impl.f_metadata_fourcc == 1263947851u) {
--                status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--                goto exit;
--              }
--              goto label__loop__break;
--            } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
--              goto label__loop__continue;
--            }
--            v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--            if (v_c == 0u) {
--              self->private_impl.f_chunk_length -= 1u;
--              iop_a_src += 1u;
--              goto label__loop__break;
--            }
--            v_c2 = WUFFS_PNG__LATIN_1[v_c];
--            if (v_c2 == 0u) {
--              status = wuffs_base__make_status(wuffs_png__error__bad_text_chunk_not_latin_1);
--              goto exit;
--            } else if (v_c2 <= 127u) {
--              if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0u) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
--                goto label__loop__continue;
--              }
--              self->private_impl.f_chunk_length -= 1u;
--              iop_a_src += 1u;
--              (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(v_c2))), iop_a_dst += 1);
--            } else {
--              if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 1u) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_write);
--                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11);
--                goto label__loop__continue;
--              }
--              self->private_impl.f_chunk_length -= 1u;
--              iop_a_src += 1u;
--              (wuffs_base__poke_u16le__no_bounds_check(iop_a_dst, v_c2), iop_a_dst += 2);
--            }
--          }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+      status = wuffs_webp__decoder__decode_huffman_tree_simple(self, a_src, a_hg, a_ht);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+    } else {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+      status = wuffs_webp__decoder__decode_code_length_code_lengths(self, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+      v_status = wuffs_webp__decoder__build_code_lengths_huffman_nodes(self);
-+      if ( ! wuffs_base__status__is_ok(&v_status)) {
-+        status = v_status;
-+        if (wuffs_base__status__is_error(&status)) {
-+          goto exit;
-+        } else if (wuffs_base__status__is_suspension(&status)) {
-+          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+          goto exit;
-         }
-+        goto ok;
-       }
--      label__loop__break:;
--      if (self->private_impl.f_metadata_fourcc == 1263947851u) {
--        self->private_impl.f_metadata_fourcc = 1263947862u;
--        if (self->private_impl.f_chunk_type == 1951945833u) {
--          if (self->private_impl.f_chunk_length <= 1u) {
--            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--            goto exit;
--          }
--          self->private_impl.f_chunk_length -= 2u;
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint8_t t_3 = *iop_a_src++;
--            v_c = t_3;
--          }
--          if (v_c == 0u) {
--            self->private_impl.f_metadata_is_zlib_compressed = false;
--          } else if (v_c == 1u) {
--            self->private_impl.f_metadata_is_zlib_compressed = true;
--          } else {
--            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--            goto exit;
--          }
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint8_t t_4 = *iop_a_src++;
--            v_c = t_4;
--          }
--          if ((v_c != 0u) && self->private_impl.f_metadata_is_zlib_compressed) {
--            status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method);
--            goto exit;
--          }
--          self->private_impl.f_metadata_fourcc -= 2u;
--          while (self->private_impl.f_metadata_fourcc != 1263947862u) {
--            self->private_impl.f_metadata_fourcc += 1u;
--            while (true) {
--              if (self->private_impl.f_chunk_length <= 0u) {
--                status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--                goto exit;
--              }
--              self->private_impl.f_chunk_length -= 1u;
--              {
--                WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
--                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                  goto suspend;
--                }
--                uint8_t t_5 = *iop_a_src++;
--                v_c = t_5;
--              }
--              if (v_c == 0u) {
--                break;
--              }
--            }
--          }
--        } else if (self->private_impl.f_chunk_type == 1951945850u) {
--          if (self->private_impl.f_chunk_length <= 0u) {
--            status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--            goto exit;
--          }
--          self->private_impl.f_chunk_length -= 1u;
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
--            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              goto suspend;
--            }
--            uint8_t t_6 = *iop_a_src++;
--            v_c = t_6;
--          }
--          if (v_c != 0u) {
--            status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method);
--            goto exit;
--          }
--          self->private_impl.f_metadata_is_zlib_compressed = true;
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+      status = wuffs_webp__decoder__build_code_lengths(self, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+      v_status = wuffs_webp__decoder__build_huffman_nodes(self, a_hg, a_ht);
-+      if ( ! wuffs_base__status__is_ok(&v_status)) {
-+        status = v_status;
-+        if (wuffs_base__status__is_error(&status)) {
-+          goto exit;
-+        } else if (wuffs_base__status__is_suspension(&status)) {
-+          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+          goto exit;
-         }
--        self->private_impl.f_call_sequence &= 239u;
--        status = wuffs_base__make_status(NULL);
-         goto ok;
-       }
--    } while (0);
--    label__goto_done__break:;
--    if (self->private_impl.f_chunk_length != 0u) {
--      status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
--      goto exit;
--    }
--    self->private_data.s_do_tell_me_more[0].scratch = 4u;
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
--    if (self->private_data.s_do_tell_me_more[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--      self->private_data.s_do_tell_me_more[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--      iop_a_src = io2_a_src;
--      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--      goto suspend;
-     }
--    iop_a_src += self->private_data.s_do_tell_me_more[0].scratch;
--    self->private_impl.f_metadata_flavor = 0u;
--    self->private_impl.f_metadata_fourcc = 0u;
--    self->private_impl.f_metadata_x = 0u;
--    self->private_impl.f_metadata_y = 0u;
--    self->private_impl.f_metadata_z = 0u;
--    self->private_impl.f_call_sequence &= 239u;
--    status = wuffs_base__make_status(NULL);
--    goto ok;
- 
-     ok:
--    self->private_impl.p_do_tell_me_more[0] = 0;
-+    self->private_impl.p_decode_huffman_tree = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_do_tell_me_more[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_do_tell_me_more[0].v_zlib_status = v_zlib_status;
-+  self->private_impl.p_decode_huffman_tree = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
-   goto exit;
-   exit:
--  if (a_dst && a_dst->data.ptr) {
--    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
--  }
-   if (a_src && a_src->data.ptr) {
-     a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
-@@ -58593,563 +72047,1574 @@ wuffs_png__decoder__do_tell_me_more(
-   return status;
- }
- 
--// -------- func png.decoder.history_retain_length
-+// -------- func webp.decoder.decode_huffman_tree_simple
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_png__decoder__history_retain_length(
--    const wuffs_png__decoder* self) {
--  if (!self) {
--    return 0;
-+static wuffs_base__status
-+wuffs_webp__decoder__decode_huffman_tree_simple(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__io_buffer* a_src,
-+    uint32_t a_hg,
-+    uint32_t a_ht) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_c8 = 0;
-+  uint32_t v_use_second_symbol = 0;
-+  uint32_t v_first_symbol_n_bits = 0;
-+  uint32_t v_symbol0 = 0;
-+  uint32_t v_symbol1 = 0;
-+  uint32_t v_base_offset = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-   }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_huffman_tree_simple;
-+  if (coro_susp_point) {
-+    v_use_second_symbol = self->private_data.s_decode_huffman_tree_simple.v_use_second_symbol;
-+    v_first_symbol_n_bits = self->private_data.s_decode_huffman_tree_simple.v_first_symbol_n_bits;
-+    v_symbol0 = self->private_data.s_decode_huffman_tree_simple.v_symbol0;
-+    v_base_offset = self->private_data.s_decode_huffman_tree_simple.v_base_offset;
-   }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--  return 0u;
-+    if (self->private_impl.f_n_bits < 2u) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_0 = *iop_a_src++;
-+        v_c8 = t_0;
-+      }
-+      if (self->private_impl.f_n_bits >= 2u) {
-+        status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
-+        goto exit;
-+      }
-+      self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
-+      self->private_impl.f_n_bits += 8u;
-+    }
-+    v_use_second_symbol = (self->private_impl.f_bits & 1u);
-+    v_first_symbol_n_bits = ((((self->private_impl.f_bits & 2u) >> 1u) * 7u) + 1u);
-+    self->private_impl.f_bits >>= 2u;
-+    self->private_impl.f_n_bits -= 2u;
-+    if (self->private_impl.f_n_bits < v_first_symbol_n_bits) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_1 = *iop_a_src++;
-+        v_c8 = t_1;
-+      }
-+      if (self->private_impl.f_n_bits >= v_first_symbol_n_bits) {
-+        status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
-+        goto exit;
-+      }
-+      self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
-+      self->private_impl.f_n_bits += 8u;
-+    }
-+    v_symbol0 = (self->private_impl.f_bits & ((((uint32_t)(1u)) << v_first_symbol_n_bits) - 1u));
-+    self->private_impl.f_bits >>= v_first_symbol_n_bits;
-+    self->private_impl.f_n_bits -= v_first_symbol_n_bits;
-+    v_base_offset = ((uint32_t)(WUFFS_WEBP__HUFFMAN_TABLE_BASE_OFFSETS[a_ht]));
-+    if (v_use_second_symbol != 0u) {
-+      if (self->private_impl.f_n_bits < 8u) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_2 = *iop_a_src++;
-+          v_c8 = t_2;
-+        }
-+        if (self->private_impl.f_n_bits >= 8u) {
-+          status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
-+          goto exit;
-+        }
-+        self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
-+        self->private_impl.f_n_bits += 8u;
-+      }
-+      v_symbol1 = (self->private_impl.f_bits & 255u);
-+      self->private_impl.f_bits >>= 8u;
-+      self->private_impl.f_n_bits -= 8u;
-+      self->private_data.f_huffman_nodes[a_hg][(v_base_offset + 0u)] = ((uint16_t)((v_base_offset + 1u)));
-+      self->private_data.f_huffman_nodes[a_hg][(v_base_offset + 1u)] = ((uint16_t)((v_symbol0 | 32768u)));
-+      self->private_data.f_huffman_nodes[a_hg][(v_base_offset + 2u)] = ((uint16_t)((v_symbol1 | 32768u)));
-+    } else {
-+      self->private_data.f_huffman_nodes[a_hg][v_base_offset] = ((uint16_t)((v_symbol0 | 32768u)));
-+    }
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_decode_huffman_tree_simple = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_huffman_tree_simple = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_huffman_tree_simple.v_use_second_symbol = v_use_second_symbol;
-+  self->private_data.s_decode_huffman_tree_simple.v_first_symbol_n_bits = v_first_symbol_n_bits;
-+  self->private_data.s_decode_huffman_tree_simple.v_symbol0 = v_symbol0;
-+  self->private_data.s_decode_huffman_tree_simple.v_base_offset = v_base_offset;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
- }
- 
--// -------- func png.decoder.workbuf_len
-+// -------- func webp.decoder.decode_code_length_code_lengths
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_png__decoder__workbuf_len(
--    const wuffs_png__decoder* self) {
--  if (!self) {
--    return wuffs_base__utility__empty_range_ii_u64();
-+static wuffs_base__status
-+wuffs_webp__decoder__decode_code_length_code_lengths(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_c8 = 0;
-+  uint32_t v_n_codes = 0;
-+  uint32_t v_i = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-   }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_range_ii_u64();
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_code_length_code_lengths;
-+  if (coro_susp_point) {
-+    v_n_codes = self->private_data.s_decode_code_length_code_lengths.v_n_codes;
-+    v_i = self->private_data.s_decode_code_length_code_lengths.v_i;
-   }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--  return wuffs_base__utility__make_range_ii_u64(self->private_impl.f_overall_workbuf_length, self->private_impl.f_overall_workbuf_length);
-+    if (self->private_impl.f_n_bits < 4u) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_0 = *iop_a_src++;
-+        v_c8 = t_0;
-+      }
-+      if (self->private_impl.f_n_bits >= 4u) {
-+        status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
-+        goto exit;
-+      }
-+      self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
-+      self->private_impl.f_n_bits += 8u;
-+    }
-+    v_n_codes = ((self->private_impl.f_bits & 15u) + 4u);
-+    self->private_impl.f_bits >>= 4u;
-+    self->private_impl.f_n_bits -= 4u;
-+    v_i = 0u;
-+    while (v_i < v_n_codes) {
-+      if (self->private_impl.f_n_bits < 3u) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_1 = *iop_a_src++;
-+          v_c8 = t_1;
-+        }
-+        if (self->private_impl.f_n_bits >= 3u) {
-+          status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
-+          goto exit;
-+        }
-+        self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
-+        self->private_impl.f_n_bits += 8u;
-+      }
-+      self->private_impl.f_code_length_code_lengths[WUFFS_WEBP__CODE_LENGTH_CODE_ORDER[v_i]] = ((uint8_t)((self->private_impl.f_bits & 7u)));
-+      self->private_impl.f_bits >>= 3u;
-+      self->private_impl.f_n_bits -= 3u;
-+      v_i += 1u;
-+    }
-+    while (v_i < 19u) {
-+      self->private_impl.f_code_length_code_lengths[WUFFS_WEBP__CODE_LENGTH_CODE_ORDER[v_i]] = 0u;
-+      v_i += 1u;
-+    }
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_decode_code_length_code_lengths = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_code_length_code_lengths = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_code_length_code_lengths.v_n_codes = v_n_codes;
-+  self->private_data.s_decode_code_length_code_lengths.v_i = v_i;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
- }
- 
--// -------- func png.decoder.filter_and_swizzle
-+// -------- func webp.decoder.build_code_lengths_huffman_nodes
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_png__decoder__filter_and_swizzle(
--    wuffs_png__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__slice_u8 a_workbuf) {
--  return (*self->private_impl.choosy_filter_and_swizzle)(self, a_dst, a_workbuf);
-+wuffs_webp__decoder__build_code_lengths_huffman_nodes(
-+    wuffs_webp__decoder* self) {
-+  uint32_t v_code_bits = 0;
-+  uint32_t v_code_len = 0;
-+  uint32_t v_symbol = 0;
-+  uint32_t v_histogram[8] = {0};
-+  uint32_t v_n_used_symbols = 0;
-+  uint32_t v_last_used_symbol = 0;
-+  uint32_t v_subscription_weight = 0;
-+  uint32_t v_subscription_total = 0;
-+  uint32_t v_curr_code = 0;
-+  uint32_t v_next_codes[9] = {0};
-+  uint32_t v_n_branches = 0;
-+  uint32_t v_h = 0;
-+  uint32_t v_children = 0;
-+  uint16_t v_node = 0;
-+
-+  v_symbol = 0u;
-+  while (v_symbol < 19u) {
-+    v_code_len = ((uint32_t)(self->private_impl.f_code_length_code_lengths[v_symbol]));
-+    if (v_code_len != 0u) {
-+      v_histogram[v_code_len] += 1u;
-+      v_n_used_symbols += 1u;
-+      v_last_used_symbol = v_symbol;
-+    }
-+    v_symbol += 1u;
-+  }
-+  if (v_n_used_symbols < 1u) {
-+    return wuffs_base__make_status(wuffs_webp__error__bad_huffman_code);
-+  } else if (v_n_used_symbols == 1u) {
-+    self->private_data.f_code_lengths_huffman_nodes[0u] = ((uint16_t)((v_last_used_symbol | 32768u)));
-+    return wuffs_base__make_status(NULL);
-+  }
-+  v_subscription_weight = 16384u;
-+  v_code_len = 1u;
-+  while (true) {
-+    v_curr_code = ((uint32_t)(((uint32_t)(v_curr_code + v_histogram[v_code_len])) << 1u));
-+    v_next_codes[(v_code_len + 1u)] = v_curr_code;
-+    v_subscription_total += ((uint32_t)(v_subscription_weight * v_histogram[v_code_len]));
-+    v_subscription_weight >>= 1u;
-+    if (v_code_len >= 7u) {
-+      break;
-+    }
-+    v_code_len += 1u;
-+  }
-+  if (v_subscription_total > 32768u) {
-+    return wuffs_base__make_status(wuffs_webp__error__bad_huffman_code_over_subscribed);
-+  } else if (v_subscription_total < 32768u) {
-+    return wuffs_base__make_status(wuffs_webp__error__bad_huffman_code_under_subscribed);
-+  }
-+  self->private_data.f_code_lengths_huffman_nodes[0u] = 0u;
-+  v_symbol = 0u;
-+  while (v_symbol < 19u) {
-+    v_code_len = ((uint32_t)(self->private_impl.f_code_length_code_lengths[v_symbol]));
-+    if (v_code_len > 0u) {
-+      v_code_bits = v_next_codes[v_code_len];
-+      v_next_codes[v_code_len] += 1u;
-+      v_code_bits <<= (32u - v_code_len);
-+      v_h = 0u;
-+      while (v_code_len > 0u) {
-+        v_node = self->private_data.f_code_lengths_huffman_nodes[v_h];
-+        if (v_node == 0u) {
-+          v_children = ((uint32_t)(1u + ((uint32_t)(2u * v_n_branches))));
-+          v_children = wuffs_base__u32__min(v_children, 35u);
-+          self->private_data.f_code_lengths_huffman_nodes[v_h] = ((uint16_t)(v_children));
-+          self->private_data.f_code_lengths_huffman_nodes[(v_children + 0u)] = 0u;
-+          self->private_data.f_code_lengths_huffman_nodes[(v_children + 1u)] = 0u;
-+          v_h = (v_children + (v_code_bits >> 31u));
-+          v_n_branches += 1u;
-+        } else {
-+          v_children = ((uint32_t)(v_node));
-+          v_h = (wuffs_base__u32__min(v_children, 35u) + (v_code_bits >> 31u));
-+        }
-+        v_code_bits <<= 1u;
-+        v_code_len -= 1u;
-+      }
-+      self->private_data.f_code_lengths_huffman_nodes[v_h] = ((uint16_t)((v_symbol | 32768u)));
-+    }
-+    v_symbol += 1u;
-+  }
-+  return wuffs_base__make_status(NULL);
- }
- 
-+// -------- func webp.decoder.build_huffman_nodes
-+
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_png__decoder__filter_and_swizzle__choosy_default(
--    wuffs_png__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__slice_u8 a_workbuf) {
--  wuffs_base__pixel_format v_dst_pixfmt = {0};
--  uint32_t v_dst_bits_per_pixel = 0;
--  uint64_t v_dst_bytes_per_pixel = 0;
--  uint64_t v_dst_bytes_per_row0 = 0;
--  uint64_t v_dst_bytes_per_row1 = 0;
--  wuffs_base__slice_u8 v_dst_palette = {0};
--  wuffs_base__table_u8 v_tab = {0};
--  uint32_t v_y = 0;
--  wuffs_base__slice_u8 v_dst = {0};
--  uint8_t v_filter = 0;
--  wuffs_base__slice_u8 v_curr_row = {0};
--  wuffs_base__slice_u8 v_prev_row = {0};
--
--  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
--  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
--  if ((v_dst_bits_per_pixel & 7u) != 0u) {
--    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+wuffs_webp__decoder__build_huffman_nodes(
-+    wuffs_webp__decoder* self,
-+    uint32_t a_hg,
-+    uint32_t a_ht) {
-+  uint32_t v_base_offset = 0;
-+  uint32_t v_code_bits = 0;
-+  uint32_t v_code_len = 0;
-+  uint32_t v_symbol = 0;
-+  uint32_t v_histogram[16] = {0};
-+  uint32_t v_n_used_symbols = 0;
-+  uint32_t v_last_used_symbol = 0;
-+  uint32_t v_subscription_weight = 0;
-+  uint32_t v_subscription_total = 0;
-+  uint32_t v_curr_code = 0;
-+  uint32_t v_next_codes[17] = {0};
-+  uint32_t v_n_branches = 0;
-+  uint32_t v_h = 0;
-+  uint32_t v_children = 0;
-+  uint16_t v_node = 0;
-+
-+  v_base_offset = ((uint32_t)(WUFFS_WEBP__HUFFMAN_TABLE_BASE_OFFSETS[a_ht]));
-+  v_symbol = 0u;
-+  while (v_symbol < self->private_impl.f_ht_n_symbols) {
-+    v_code_len = ((uint32_t)(((uint16_t)(self->private_data.f_code_lengths[v_symbol] & 15u))));
-+    if (v_code_len != 0u) {
-+      v_histogram[v_code_len] += 1u;
-+      v_n_used_symbols += 1u;
-+      v_last_used_symbol = v_symbol;
-+    }
-+    v_symbol += 1u;
-+  }
-+  if (v_n_used_symbols < 1u) {
-+    return wuffs_base__make_status(wuffs_webp__error__bad_huffman_code);
-+  } else if (v_n_used_symbols == 1u) {
-+    self->private_data.f_huffman_nodes[a_hg][v_base_offset] = ((uint16_t)((v_last_used_symbol | 32768u)));
-+    return wuffs_base__make_status(NULL);
-   }
--  v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8u)));
--  v_dst_bytes_per_row0 = (((uint64_t)(self->private_impl.f_frame_rect_x0)) * v_dst_bytes_per_pixel);
--  v_dst_bytes_per_row1 = (((uint64_t)(self->private_impl.f_frame_rect_x1)) * v_dst_bytes_per_pixel);
--  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024));
--  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
--  if (v_dst_bytes_per_row1 < ((uint64_t)(v_tab.width))) {
--    v_tab = wuffs_base__table_u8__subtable_ij(v_tab,
--        0u,
--        0u,
--        v_dst_bytes_per_row1,
--        ((uint64_t)(v_tab.height)));
-+  v_subscription_weight = 16384u;
-+  v_code_len = 1u;
-+  while (true) {
-+    v_curr_code = ((uint32_t)(((uint32_t)(v_curr_code + v_histogram[v_code_len])) << 1u));
-+    v_next_codes[(v_code_len + 1u)] = v_curr_code;
-+    v_subscription_total += ((uint32_t)(v_subscription_weight * v_histogram[v_code_len]));
-+    v_subscription_weight >>= 1u;
-+    if (v_code_len >= 15u) {
-+      break;
-+    }
-+    v_code_len += 1u;
-+  }
-+  if (v_subscription_total > 32768u) {
-+    return wuffs_base__make_status(wuffs_webp__error__bad_huffman_code_over_subscribed);
-+  } else if (v_subscription_total < 32768u) {
-+    return wuffs_base__make_status(wuffs_webp__error__bad_huffman_code_under_subscribed);
-+  }
-+  self->private_data.f_huffman_nodes[a_hg][v_base_offset] = 0u;
-+  v_symbol = 0u;
-+  while (v_symbol < self->private_impl.f_ht_n_symbols) {
-+    v_code_len = ((uint32_t)(((uint16_t)(self->private_data.f_code_lengths[v_symbol] & 15u))));
-+    if (v_code_len != 0u) {
-+      v_code_bits = v_next_codes[v_code_len];
-+      v_next_codes[v_code_len] += 1u;
-+      v_code_bits <<= (32u - v_code_len);
-+      v_h = v_base_offset;
-+      while (v_code_len > 0u) {
-+        v_node = self->private_data.f_huffman_nodes[a_hg][v_h];
-+        if (v_node == 0u) {
-+          v_children = ((uint32_t)(v_base_offset + ((uint32_t)(1u + ((uint32_t)(2u * v_n_branches))))));
-+          v_children = wuffs_base__u32__min(v_children, 6265u);
-+          self->private_data.f_huffman_nodes[a_hg][v_h] = ((uint16_t)(v_children));
-+          self->private_data.f_huffman_nodes[a_hg][(v_children + 0u)] = 0u;
-+          self->private_data.f_huffman_nodes[a_hg][(v_children + 1u)] = 0u;
-+          v_h = (v_children + (v_code_bits >> 31u));
-+          v_n_branches += 1u;
-+        } else {
-+          v_children = ((uint32_t)(v_node));
-+          v_h = (wuffs_base__u32__min(v_children, 6265u) + (v_code_bits >> 31u));
-+        }
-+        v_code_bits <<= 1u;
-+        v_code_len -= 1u;
-+      }
-+      self->private_data.f_huffman_nodes[a_hg][v_h] = ((uint16_t)((v_symbol | 32768u)));
-+    }
-+    v_symbol += 1u;
-   }
--  if (v_dst_bytes_per_row0 < ((uint64_t)(v_tab.width))) {
--    v_tab = wuffs_base__table_u8__subtable_ij(v_tab,
--        v_dst_bytes_per_row0,
--        0u,
--        ((uint64_t)(v_tab.width)),
--        ((uint64_t)(v_tab.height)));
--  } else {
--    v_tab = wuffs_base__table_u8__subtable_ij(v_tab,
--        0u,
--        0u,
--        0u,
--        0u);
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+// -------- func webp.decoder.build_code_lengths
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__build_code_lengths(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_c8 = 0;
-+  uint32_t v_use_length = 0;
-+  uint32_t v_length_n_bits = 0;
-+  uint32_t v_length = 0;
-+  uint16_t v_prev_code_length = 0;
-+  uint32_t v_h = 0;
-+  uint32_t v_s = 0;
-+  uint32_t v_s_max = 0;
-+  uint16_t v_node = 0;
-+  uint32_t v_symbol = 0;
-+  uint16_t v_repeat_value = 0;
-+  uint32_t v_repeat_n_bits = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-   }
--  v_y = self->private_impl.f_frame_rect_y0;
--  while (v_y < self->private_impl.f_frame_rect_y1) {
--    v_dst = wuffs_base__table_u8__row_u32(v_tab, v_y);
--    if (1u > ((uint64_t)(a_workbuf.len))) {
--      return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_build_code_lengths;
-+  if (coro_susp_point) {
-+    v_length_n_bits = self->private_data.s_build_code_lengths.v_length_n_bits;
-+    v_prev_code_length = self->private_data.s_build_code_lengths.v_prev_code_length;
-+    v_s = self->private_data.s_build_code_lengths.v_s;
-+    v_s_max = self->private_data.s_build_code_lengths.v_s_max;
-+    v_node = self->private_data.s_build_code_lengths.v_node;
-+    v_repeat_value = self->private_data.s_build_code_lengths.v_repeat_value;
-+    v_repeat_n_bits = self->private_data.s_build_code_lengths.v_repeat_n_bits;
-+  }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_n_bits < 1u) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_0 = *iop_a_src++;
-+        v_c8 = t_0;
-+      }
-+      self->private_impl.f_bits = ((uint32_t)(v_c8));
-+      self->private_impl.f_n_bits = 8u;
-     }
--    v_filter = a_workbuf.ptr[0u];
--    a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, 1u);
--    if (self->private_impl.f_pass_bytes_per_row > ((uint64_t)(a_workbuf.len))) {
--      return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length);
-+    v_use_length = (self->private_impl.f_bits & 1u);
-+    self->private_impl.f_bits >>= 1u;
-+    self->private_impl.f_n_bits -= 1u;
-+    self->private_impl.f_ht_code_lengths_remaining = self->private_impl.f_ht_n_symbols;
-+    if (v_use_length != 0u) {
-+      if (self->private_impl.f_n_bits < 3u) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_1 = *iop_a_src++;
-+          v_c8 = t_1;
-+        }
-+        if (self->private_impl.f_n_bits >= 3u) {
-+          status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
-+          goto exit;
-+        }
-+        self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
-+        self->private_impl.f_n_bits += 8u;
-+      }
-+      v_length_n_bits = (((self->private_impl.f_bits & 7u) * 2u) + 2u);
-+      self->private_impl.f_bits >>= 3u;
-+      self->private_impl.f_n_bits -= 3u;
-+      while (self->private_impl.f_n_bits < v_length_n_bits) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_2 = *iop_a_src++;
-+          v_c8 = t_2;
-+        }
-+        if (self->private_impl.f_n_bits >= v_length_n_bits) {
-+          status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
-+          goto exit;
-+        }
-+        self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
-+        self->private_impl.f_n_bits += 8u;
-+      }
-+      v_length = ((self->private_impl.f_bits & ((((uint32_t)(1u)) << v_length_n_bits) - 1u)) + 2u);
-+      self->private_impl.f_bits >>= v_length_n_bits;
-+      self->private_impl.f_n_bits -= v_length_n_bits;
-+      if (v_length > self->private_impl.f_ht_n_symbols) {
-+        status = wuffs_base__make_status(wuffs_webp__error__bad_huffman_code);
-+        goto exit;
-+      }
-+      self->private_impl.f_ht_code_lengths_remaining = v_length;
-     }
--    v_curr_row = wuffs_base__slice_u8__subslice_j(a_workbuf, self->private_impl.f_pass_bytes_per_row);
--    a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, self->private_impl.f_pass_bytes_per_row);
--    if (v_filter == 0u) {
--    } else if (v_filter == 1u) {
--      wuffs_png__decoder__filter_1(self, v_curr_row);
--    } else if (v_filter == 2u) {
--      wuffs_png__decoder__filter_2(self, v_curr_row, v_prev_row);
--    } else if (v_filter == 3u) {
--      wuffs_png__decoder__filter_3(self, v_curr_row, v_prev_row);
--    } else if (v_filter == 4u) {
--      wuffs_png__decoder__filter_4(self, v_curr_row, v_prev_row);
--    } else {
--      return wuffs_base__make_status(wuffs_png__error__bad_filter);
-+    v_prev_code_length = 8u;
-+    while (v_s < self->private_impl.f_ht_n_symbols) {
-+      if (self->private_impl.f_ht_code_lengths_remaining <= 0u) {
-+        while (v_s < self->private_impl.f_ht_n_symbols) {
-+          self->private_data.f_code_lengths[v_s] = 0u;
-+          v_s += 1u;
-+        }
-+        break;
-+      }
-+      self->private_impl.f_ht_code_lengths_remaining -= 1u;
-+      v_h = 0u;
-+      while (true) {
-+        v_node = self->private_data.f_code_lengths_huffman_nodes[v_h];
-+        if (v_node >= 32768u) {
-+          break;
-+        } else if (v_node > 35u) {
-+          status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_huffman_code);
-+          goto exit;
-+        }
-+        if (self->private_impl.f_n_bits < 1u) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint8_t t_3 = *iop_a_src++;
-+            v_c8 = t_3;
-+          }
-+          self->private_impl.f_bits = ((uint32_t)(v_c8));
-+          self->private_impl.f_n_bits = 8u;
-+        }
-+        v_h = (((uint32_t)(v_node)) + (self->private_impl.f_bits & 1u));
-+        self->private_impl.f_bits >>= 1u;
-+        self->private_impl.f_n_bits -= 1u;
-+      }
-+      v_symbol = ((uint32_t)(((uint16_t)(v_node & 32767u))));
-+      if (v_symbol == 0u) {
-+        self->private_data.f_code_lengths[v_s] = 0u;
-+        v_s += 1u;
-+        continue;
-+      } else if (v_symbol < 16u) {
-+        v_prev_code_length = ((uint16_t)(v_symbol));
-+        self->private_data.f_code_lengths[v_s] = v_prev_code_length;
-+        v_s += 1u;
-+        continue;
-+      } else if (v_symbol == 16u) {
-+        v_repeat_value = v_prev_code_length;
-+      } else {
-+        v_repeat_value = 0u;
-+      }
-+      v_repeat_n_bits = ((uint32_t)(WUFFS_WEBP__REPEAT_N_BITS[(v_symbol & 3u)]));
-+      v_s_max = ((uint32_t)(((uint32_t)(WUFFS_WEBP__REPEAT_COUNTS[(v_symbol & 3u)])) + v_s));
-+      if (self->private_impl.f_n_bits < v_repeat_n_bits) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_4 = *iop_a_src++;
-+          v_c8 = t_4;
-+        }
-+        if (self->private_impl.f_n_bits >= v_repeat_n_bits) {
-+          status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
-+          goto exit;
-+        }
-+        self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
-+        self->private_impl.f_n_bits += 8u;
-+      }
-+      v_s_max += (self->private_impl.f_bits & ((((uint32_t)(1u)) << v_repeat_n_bits) - 1u));
-+      self->private_impl.f_bits >>= v_repeat_n_bits;
-+      self->private_impl.f_n_bits -= v_repeat_n_bits;
-+      if (v_s_max > self->private_impl.f_ht_n_symbols) {
-+        status = wuffs_base__make_status(wuffs_webp__error__bad_huffman_code);
-+        goto exit;
-+      }
-+      while (v_s < v_s_max) {
-+        self->private_data.f_code_lengths[v_s] = v_repeat_value;
-+        v_s += 1u;
-+      }
-     }
--    wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, v_curr_row);
--    v_prev_row = v_curr_row;
--    v_y += 1u;
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_build_code_lengths = 0;
-+    goto exit;
-   }
--  return wuffs_base__make_status(NULL);
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_build_code_lengths = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_build_code_lengths.v_length_n_bits = v_length_n_bits;
-+  self->private_data.s_build_code_lengths.v_prev_code_length = v_prev_code_length;
-+  self->private_data.s_build_code_lengths.v_s = v_s;
-+  self->private_data.s_build_code_lengths.v_s_max = v_s_max;
-+  self->private_data.s_build_code_lengths.v_node = v_node;
-+  self->private_data.s_build_code_lengths.v_repeat_value = v_repeat_value;
-+  self->private_data.s_build_code_lengths.v_repeat_n_bits = v_repeat_n_bits;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
- }
- 
--// -------- func png.decoder.filter_and_swizzle_tricky
-+// -------- func webp.decoder.decode_pixels_slow
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_png__decoder__filter_and_swizzle_tricky(
--    wuffs_png__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__slice_u8 a_workbuf) {
--  wuffs_base__pixel_format v_dst_pixfmt = {0};
--  uint32_t v_dst_bits_per_pixel = 0;
--  uint64_t v_dst_bytes_per_pixel = 0;
--  uint64_t v_dst_bytes_per_row1 = 0;
--  wuffs_base__slice_u8 v_dst_palette = {0};
--  wuffs_base__table_u8 v_tab = {0};
--  uint64_t v_src_bytes_per_pixel = 0;
-+wuffs_webp__decoder__decode_pixels_slow(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__slice_u8 a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    uint32_t a_width,
-+    uint32_t a_height,
-+    wuffs_base__slice_u8 a_tile_data,
-+    uint32_t a_tile_size_log2) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_c8 = 0;
-+  uint64_t v_p = 0;
-+  uint64_t v_p_max = 0;
-+  uint32_t v_tile_size_log2 = 0;
-+  uint32_t v_width_in_tiles = 0;
-   uint32_t v_x = 0;
-   uint32_t v_y = 0;
--  uint64_t v_i = 0;
--  wuffs_base__slice_u8 v_dst = {0};
--  uint8_t v_filter = 0;
--  wuffs_base__slice_u8 v_s = {0};
--  wuffs_base__slice_u8 v_curr_row = {0};
--  wuffs_base__slice_u8 v_prev_row = {0};
--  uint8_t v_bits_unpacked[8] = {0};
--  uint8_t v_bits_packed = 0;
--  uint8_t v_packs_remaining = 0;
--  uint8_t v_multiplier = 0;
--  uint8_t v_shift = 0;
-+  uint32_t v_i = 0;
-+  uint32_t v_hg = 0;
-+  uint32_t v_h = 0;
-+  uint16_t v_node = 0;
-+  uint32_t v_pixel_g = 0;
-+  uint32_t v_color = 0;
-+  wuffs_base__slice_u8 v_dst_pixel = {0};
-+  uint32_t v_back_ref_len_n_bits = 0;
-+  uint32_t v_back_ref_len_minus_1 = 0;
-+  uint32_t v_back_ref_dist_n_bits = 0;
-+  uint32_t v_back_ref_dist_sym = 0;
-+  uint32_t v_back_ref_dist_premap_minus_1 = 0;
-+  uint32_t v_back_ref_dist_minus_1 = 0;
-+  uint32_t v_dm = 0;
-+  uint32_t v_dx = 0;
-+  uint32_t v_dy = 0;
-+  uint64_t v_p_end = 0;
-+  uint64_t v_dist4 = 0;
-+  uint64_t v_q = 0;
-+  wuffs_base__slice_u8 v_color_cache_pixels = {0};
-+  uint64_t v_color_cache_p = 0;
-+  uint32_t v_color_cache_shift = 0;
- 
--  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
--  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
--  if ((v_dst_bits_per_pixel & 7u) != 0u) {
--    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
--  }
--  v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8u)));
--  v_dst_bytes_per_row1 = (((uint64_t)(self->private_impl.f_frame_rect_x1)) * v_dst_bytes_per_pixel);
--  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024));
--  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
--  v_src_bytes_per_pixel = 1u;
--  if (self->private_impl.f_depth >= 8u) {
--    v_src_bytes_per_pixel = (((uint64_t)(WUFFS_PNG__NUM_CHANNELS[self->private_impl.f_color_type])) * ((uint64_t)((self->private_impl.f_depth >> 3u))));
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-   }
--  if (self->private_impl.f_chunk_type_array[0u] == 73u) {
--    v_y = ((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][5u]));
--  } else {
--    v_y = self->private_impl.f_frame_rect_y0;
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_pixels_slow;
-+  if (coro_susp_point) {
-+    v_p = self->private_data.s_decode_pixels_slow.v_p;
-+    v_p_max = self->private_data.s_decode_pixels_slow.v_p_max;
-+    v_tile_size_log2 = self->private_data.s_decode_pixels_slow.v_tile_size_log2;
-+    v_width_in_tiles = self->private_data.s_decode_pixels_slow.v_width_in_tiles;
-+    v_x = self->private_data.s_decode_pixels_slow.v_x;
-+    v_y = self->private_data.s_decode_pixels_slow.v_y;
-+    v_hg = self->private_data.s_decode_pixels_slow.v_hg;
-+    v_node = self->private_data.s_decode_pixels_slow.v_node;
-+    v_color = self->private_data.s_decode_pixels_slow.v_color;
-+    v_back_ref_len_n_bits = self->private_data.s_decode_pixels_slow.v_back_ref_len_n_bits;
-+    v_back_ref_len_minus_1 = self->private_data.s_decode_pixels_slow.v_back_ref_len_minus_1;
-+    v_back_ref_dist_n_bits = self->private_data.s_decode_pixels_slow.v_back_ref_dist_n_bits;
-+    v_back_ref_dist_premap_minus_1 = self->private_data.s_decode_pixels_slow.v_back_ref_dist_premap_minus_1;
-+    v_color_cache_p = self->private_data.s_decode_pixels_slow.v_color_cache_p;
-   }
--  while (v_y < self->private_impl.f_frame_rect_y1) {
--    v_dst = wuffs_base__table_u8__row_u32(v_tab, v_y);
--    if (v_dst_bytes_per_row1 < ((uint64_t)(v_dst.len))) {
--      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row1);
--    }
--    if (1u > ((uint64_t)(a_workbuf.len))) {
--      return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length);
--    }
--    v_filter = a_workbuf.ptr[0u];
--    a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, 1u);
--    if (self->private_impl.f_pass_bytes_per_row > ((uint64_t)(a_workbuf.len))) {
--      return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length);
--    }
--    v_curr_row = wuffs_base__slice_u8__subslice_j(a_workbuf, self->private_impl.f_pass_bytes_per_row);
--    a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, self->private_impl.f_pass_bytes_per_row);
--    if (v_filter == 0u) {
--    } else if (v_filter == 1u) {
--      wuffs_png__decoder__filter_1(self, v_curr_row);
--    } else if (v_filter == 2u) {
--      wuffs_png__decoder__filter_2(self, v_curr_row, v_prev_row);
--    } else if (v_filter == 3u) {
--      wuffs_png__decoder__filter_3(self, v_curr_row, v_prev_row);
--    } else if (v_filter == 4u) {
--      wuffs_png__decoder__filter_4(self, v_curr_row, v_prev_row);
--    } else {
--      return wuffs_base__make_status(wuffs_png__error__bad_filter);
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    v_p_max = ((uint64_t)((4u * a_width * a_height)));
-+    if (((uint64_t)(a_dst.len)) < v_p_max) {
-+      status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_dst_buffer);
-+      goto exit;
-     }
--    v_s = v_curr_row;
--    if (self->private_impl.f_chunk_type_array[0u] == 73u) {
--      v_x = ((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][2u]));
-+    if (a_tile_size_log2 != 0u) {
-+      v_tile_size_log2 = a_tile_size_log2;
-+      v_width_in_tiles = ((a_width + ((((uint32_t)(1u)) << v_tile_size_log2) - 1u)) >> v_tile_size_log2);
-     } else {
--      v_x = self->private_impl.f_frame_rect_x0;
-+      v_tile_size_log2 = 31u;
-+      v_width_in_tiles = 1u;
-     }
--    if (self->private_impl.f_depth == 8u) {
--      while (v_x < self->private_impl.f_frame_rect_x1) {
--        v_i = (((uint64_t)(v_x)) * v_dst_bytes_per_pixel);
--        if (v_i <= ((uint64_t)(v_dst.len))) {
--          if (self->private_impl.f_color_type == 4u) {
--            if (2u <= ((uint64_t)(v_s.len))) {
--              v_bits_unpacked[0u] = v_s.ptr[0u];
--              v_bits_unpacked[1u] = v_s.ptr[0u];
--              v_bits_unpacked[2u] = v_s.ptr[0u];
--              v_bits_unpacked[3u] = v_s.ptr[1u];
--              v_s = wuffs_base__slice_u8__subslice_i(v_s, 2u);
--              wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4));
--            }
--          } else if (((uint32_t)(self->private_impl.f_remap_transparency)) != 0u) {
--            if (self->private_impl.f_color_type == 0u) {
--              if (1u <= ((uint64_t)(v_s.len))) {
--                v_bits_unpacked[0u] = v_s.ptr[0u];
--                v_bits_unpacked[1u] = v_s.ptr[0u];
--                v_bits_unpacked[2u] = v_s.ptr[0u];
--                v_bits_unpacked[3u] = 255u;
--                v_s = wuffs_base__slice_u8__subslice_i(v_s, 1u);
--                if (((uint32_t)(self->private_impl.f_remap_transparency)) == ((((uint32_t)(v_bits_unpacked[0u])) << 0u) |
--                    (((uint32_t)(v_bits_unpacked[1u])) << 8u) |
--                    (((uint32_t)(v_bits_unpacked[2u])) << 16u) |
--                    (((uint32_t)(v_bits_unpacked[3u])) << 24u))) {
--                  v_bits_unpacked[0u] = 0u;
--                  v_bits_unpacked[1u] = 0u;
--                  v_bits_unpacked[2u] = 0u;
--                  v_bits_unpacked[3u] = 0u;
--                }
--                wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4));
-+    while (v_p < v_p_max) {
-+      v_i = ((uint32_t)(((uint32_t)(((uint32_t)(((uint32_t)((v_y >> v_tile_size_log2) * v_width_in_tiles)) + (v_x >> v_tile_size_log2))) * 4u)) + 1u));
-+      if (((uint64_t)(v_i)) < ((uint64_t)(a_tile_data.len))) {
-+        v_hg = ((uint32_t)(a_tile_data.ptr[((uint64_t)(v_i))]));
-+      }
-+      v_h = ((uint32_t)(WUFFS_WEBP__HUFFMAN_TABLE_BASE_OFFSETS[0u]));
-+      while (true) {
-+        v_node = self->private_data.f_huffman_nodes[v_hg][v_h];
-+        if (v_node >= 32768u) {
-+          break;
-+        } else if (v_node > 6265u) {
-+          status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_huffman_code);
-+          goto exit;
-+        }
-+        if (self->private_impl.f_n_bits < 1u) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint8_t t_0 = *iop_a_src++;
-+            v_c8 = t_0;
-+          }
-+          self->private_impl.f_bits = ((uint32_t)(v_c8));
-+          self->private_impl.f_n_bits = 8u;
-+        }
-+        v_h = (((uint32_t)(v_node)) + (self->private_impl.f_bits & 1u));
-+        self->private_impl.f_bits >>= 1u;
-+        self->private_impl.f_n_bits -= 1u;
-+      }
-+      v_pixel_g = ((uint32_t)(((uint16_t)(v_node & 32767u))));
-+      if (v_pixel_g < 256u) {
-+        v_color = (v_pixel_g << 8u);
-+        v_h = ((uint32_t)(WUFFS_WEBP__HUFFMAN_TABLE_BASE_OFFSETS[1u]));
-+        while (true) {
-+          v_node = self->private_data.f_huffman_nodes[v_hg][v_h];
-+          if (v_node >= 32768u) {
-+            break;
-+          }
-+          if (self->private_impl.f_n_bits < 1u) {
-+            {
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-               }
--            } else {
--              if (3u <= ((uint64_t)(v_s.len))) {
--                v_bits_unpacked[0u] = v_s.ptr[2u];
--                v_bits_unpacked[1u] = v_s.ptr[1u];
--                v_bits_unpacked[2u] = v_s.ptr[0u];
--                v_bits_unpacked[3u] = 255u;
--                v_s = wuffs_base__slice_u8__subslice_i(v_s, 3u);
--                if (((uint32_t)(self->private_impl.f_remap_transparency)) == ((((uint32_t)(v_bits_unpacked[0u])) << 0u) |
--                    (((uint32_t)(v_bits_unpacked[1u])) << 8u) |
--                    (((uint32_t)(v_bits_unpacked[2u])) << 16u) |
--                    (((uint32_t)(v_bits_unpacked[3u])) << 24u))) {
--                  v_bits_unpacked[0u] = 0u;
--                  v_bits_unpacked[1u] = 0u;
--                  v_bits_unpacked[2u] = 0u;
--                  v_bits_unpacked[3u] = 0u;
--                }
--                wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4));
-+              uint8_t t_1 = *iop_a_src++;
-+              v_c8 = t_1;
-+            }
-+            self->private_impl.f_bits = ((uint32_t)(v_c8));
-+            self->private_impl.f_n_bits = 8u;
-+          }
-+          v_h = ((((uint32_t)(v_node)) & 4095u) + (self->private_impl.f_bits & 1u));
-+          self->private_impl.f_bits >>= 1u;
-+          self->private_impl.f_n_bits -= 1u;
-+        }
-+        v_color |= (((uint32_t)(((uint16_t)(v_node & 255u)))) << 16u);
-+        v_h = ((uint32_t)(WUFFS_WEBP__HUFFMAN_TABLE_BASE_OFFSETS[2u]));
-+        while (true) {
-+          v_node = self->private_data.f_huffman_nodes[v_hg][v_h];
-+          if (v_node >= 32768u) {
-+            break;
-+          }
-+          if (self->private_impl.f_n_bits < 1u) {
-+            {
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-               }
-+              uint8_t t_2 = *iop_a_src++;
-+              v_c8 = t_2;
-             }
--          } else if (v_src_bytes_per_pixel <= ((uint64_t)(v_s.len))) {
--            wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__slice_u8__subslice_j(v_s, v_src_bytes_per_pixel));
--            v_s = wuffs_base__slice_u8__subslice_i(v_s, v_src_bytes_per_pixel);
-+            self->private_impl.f_bits = ((uint32_t)(v_c8));
-+            self->private_impl.f_n_bits = 8u;
-           }
-+          v_h = ((((uint32_t)(v_node)) & 4095u) + (self->private_impl.f_bits & 1u));
-+          self->private_impl.f_bits >>= 1u;
-+          self->private_impl.f_n_bits -= 1u;
-         }
--        v_x += (((uint32_t)(1u)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0u]);
--      }
--    } else if (self->private_impl.f_depth < 8u) {
--      v_multiplier = 1u;
--      if (self->private_impl.f_color_type == 0u) {
--        v_multiplier = WUFFS_PNG__LOW_BIT_DEPTH_MULTIPLIERS[self->private_impl.f_depth];
--      }
--      v_shift = ((8u - self->private_impl.f_depth) & 7u);
--      v_packs_remaining = 0u;
--      while (v_x < self->private_impl.f_frame_rect_x1) {
--        v_i = (((uint64_t)(v_x)) * v_dst_bytes_per_pixel);
--        if (v_i <= ((uint64_t)(v_dst.len))) {
--          if ((v_packs_remaining == 0u) && (1u <= ((uint64_t)(v_s.len)))) {
--            v_packs_remaining = WUFFS_PNG__LOW_BIT_DEPTH_NUM_PACKS[self->private_impl.f_depth];
--            v_bits_packed = v_s.ptr[0u];
--            v_s = wuffs_base__slice_u8__subslice_i(v_s, 1u);
-+        v_color |= (((uint32_t)(((uint16_t)(v_node & 255u)))) << 0u);
-+        v_h = ((uint32_t)(WUFFS_WEBP__HUFFMAN_TABLE_BASE_OFFSETS[3u]));
-+        while (true) {
-+          v_node = self->private_data.f_huffman_nodes[v_hg][v_h];
-+          if (v_node >= 32768u) {
-+            break;
-           }
--          v_bits_unpacked[0u] = ((uint8_t)((v_bits_packed >> v_shift) * v_multiplier));
--          v_bits_packed = ((uint8_t)(v_bits_packed << self->private_impl.f_depth));
--          v_packs_remaining = ((uint8_t)(v_packs_remaining - 1u));
--          if (((uint32_t)(self->private_impl.f_remap_transparency)) != 0u) {
--            v_bits_unpacked[1u] = v_bits_unpacked[0u];
--            v_bits_unpacked[2u] = v_bits_unpacked[0u];
--            v_bits_unpacked[3u] = 255u;
--            if (((uint32_t)(self->private_impl.f_remap_transparency)) == ((((uint32_t)(v_bits_unpacked[0u])) << 0u) |
--                (((uint32_t)(v_bits_unpacked[1u])) << 8u) |
--                (((uint32_t)(v_bits_unpacked[2u])) << 16u) |
--                (((uint32_t)(v_bits_unpacked[3u])) << 24u))) {
--              v_bits_unpacked[0u] = 0u;
--              v_bits_unpacked[1u] = 0u;
--              v_bits_unpacked[2u] = 0u;
--              v_bits_unpacked[3u] = 0u;
-+          if (self->private_impl.f_n_bits < 1u) {
-+            {
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint8_t t_3 = *iop_a_src++;
-+              v_c8 = t_3;
-             }
--            wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4));
--          } else {
--            wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 1));
-+            self->private_impl.f_bits = ((uint32_t)(v_c8));
-+            self->private_impl.f_n_bits = 8u;
-           }
-+          v_h = ((((uint32_t)(v_node)) & 4095u) + (self->private_impl.f_bits & 1u));
-+          self->private_impl.f_bits >>= 1u;
-+          self->private_impl.f_n_bits -= 1u;
-         }
--        v_x += (((uint32_t)(1u)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0u]);
--      }
--    } else {
--      while (v_x < self->private_impl.f_frame_rect_x1) {
--        v_i = (((uint64_t)(v_x)) * v_dst_bytes_per_pixel);
--        if (v_i <= ((uint64_t)(v_dst.len))) {
--          if (self->private_impl.f_color_type == 0u) {
--            if (2u <= ((uint64_t)(v_s.len))) {
--              v_bits_unpacked[0u] = v_s.ptr[1u];
--              v_bits_unpacked[1u] = v_s.ptr[0u];
--              v_bits_unpacked[2u] = v_s.ptr[1u];
--              v_bits_unpacked[3u] = v_s.ptr[0u];
--              v_bits_unpacked[4u] = v_s.ptr[1u];
--              v_bits_unpacked[5u] = v_s.ptr[0u];
--              v_bits_unpacked[6u] = 255u;
--              v_bits_unpacked[7u] = 255u;
--              v_s = wuffs_base__slice_u8__subslice_i(v_s, 2u);
--              if (self->private_impl.f_remap_transparency == ((((uint64_t)(v_bits_unpacked[0u])) << 0u) |
--                  (((uint64_t)(v_bits_unpacked[1u])) << 8u) |
--                  (((uint64_t)(v_bits_unpacked[2u])) << 16u) |
--                  (((uint64_t)(v_bits_unpacked[3u])) << 24u) |
--                  (((uint64_t)(v_bits_unpacked[4u])) << 32u) |
--                  (((uint64_t)(v_bits_unpacked[5u])) << 40u) |
--                  (((uint64_t)(v_bits_unpacked[6u])) << 48u) |
--                  (((uint64_t)(v_bits_unpacked[7u])) << 56u))) {
--                v_bits_unpacked[0u] = 0u;
--                v_bits_unpacked[1u] = 0u;
--                v_bits_unpacked[2u] = 0u;
--                v_bits_unpacked[3u] = 0u;
--                v_bits_unpacked[4u] = 0u;
--                v_bits_unpacked[5u] = 0u;
--                v_bits_unpacked[6u] = 0u;
--                v_bits_unpacked[7u] = 0u;
-+        v_color |= (((uint32_t)(((uint16_t)(v_node & 255u)))) << 24u);
-+      } else if (v_pixel_g < 280u) {
-+        if (v_pixel_g < 260u) {
-+          v_back_ref_len_minus_1 = (v_pixel_g - 256u);
-+        } else {
-+          v_back_ref_len_n_bits = ((v_pixel_g - 258u) >> 1u);
-+          v_back_ref_len_minus_1 = ((((uint32_t)(2u)) + (v_pixel_g & 1u)) << v_back_ref_len_n_bits);
-+          while (self->private_impl.f_n_bits < v_back_ref_len_n_bits) {
-+            {
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-               }
-+              uint8_t t_4 = *iop_a_src++;
-+              v_c8 = t_4;
-             }
--          } else if (self->private_impl.f_color_type == 2u) {
--            if (6u <= ((uint64_t)(v_s.len))) {
--              v_bits_unpacked[0u] = v_s.ptr[5u];
--              v_bits_unpacked[1u] = v_s.ptr[4u];
--              v_bits_unpacked[2u] = v_s.ptr[3u];
--              v_bits_unpacked[3u] = v_s.ptr[2u];
--              v_bits_unpacked[4u] = v_s.ptr[1u];
--              v_bits_unpacked[5u] = v_s.ptr[0u];
--              v_bits_unpacked[6u] = 255u;
--              v_bits_unpacked[7u] = 255u;
--              v_s = wuffs_base__slice_u8__subslice_i(v_s, 6u);
--              if (self->private_impl.f_remap_transparency == ((((uint64_t)(v_bits_unpacked[0u])) << 0u) |
--                  (((uint64_t)(v_bits_unpacked[1u])) << 8u) |
--                  (((uint64_t)(v_bits_unpacked[2u])) << 16u) |
--                  (((uint64_t)(v_bits_unpacked[3u])) << 24u) |
--                  (((uint64_t)(v_bits_unpacked[4u])) << 32u) |
--                  (((uint64_t)(v_bits_unpacked[5u])) << 40u) |
--                  (((uint64_t)(v_bits_unpacked[6u])) << 48u) |
--                  (((uint64_t)(v_bits_unpacked[7u])) << 56u))) {
--                v_bits_unpacked[0u] = 0u;
--                v_bits_unpacked[1u] = 0u;
--                v_bits_unpacked[2u] = 0u;
--                v_bits_unpacked[3u] = 0u;
--                v_bits_unpacked[4u] = 0u;
--                v_bits_unpacked[5u] = 0u;
--                v_bits_unpacked[6u] = 0u;
--                v_bits_unpacked[7u] = 0u;
-+            if (self->private_impl.f_n_bits >= v_back_ref_len_n_bits) {
-+              status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
-+              goto exit;
-+            }
-+            self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
-+            self->private_impl.f_n_bits += 8u;
-+          }
-+          v_back_ref_len_minus_1 += (self->private_impl.f_bits & ((((uint32_t)(1u)) << v_back_ref_len_n_bits) - 1u));
-+          self->private_impl.f_bits >>= v_back_ref_len_n_bits;
-+          self->private_impl.f_n_bits -= v_back_ref_len_n_bits;
-+        }
-+        v_h = ((uint32_t)(WUFFS_WEBP__HUFFMAN_TABLE_BASE_OFFSETS[4u]));
-+        while (true) {
-+          v_node = self->private_data.f_huffman_nodes[v_hg][v_h];
-+          if (v_node >= 32768u) {
-+            break;
-+          }
-+          if (self->private_impl.f_n_bits < 1u) {
-+            {
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-               }
-+              uint8_t t_5 = *iop_a_src++;
-+              v_c8 = t_5;
-             }
--          } else if (self->private_impl.f_color_type == 4u) {
--            if (4u <= ((uint64_t)(v_s.len))) {
--              v_bits_unpacked[0u] = v_s.ptr[1u];
--              v_bits_unpacked[1u] = v_s.ptr[0u];
--              v_bits_unpacked[2u] = v_s.ptr[1u];
--              v_bits_unpacked[3u] = v_s.ptr[0u];
--              v_bits_unpacked[4u] = v_s.ptr[1u];
--              v_bits_unpacked[5u] = v_s.ptr[0u];
--              v_bits_unpacked[6u] = v_s.ptr[3u];
--              v_bits_unpacked[7u] = v_s.ptr[2u];
--              v_s = wuffs_base__slice_u8__subslice_i(v_s, 4u);
-+            self->private_impl.f_bits = ((uint32_t)(v_c8));
-+            self->private_impl.f_n_bits = 8u;
-+          }
-+          v_h = ((((uint32_t)(v_node)) & 4095u) + (self->private_impl.f_bits & 1u));
-+          self->private_impl.f_bits >>= 1u;
-+          self->private_impl.f_n_bits -= 1u;
-+        }
-+        v_back_ref_dist_sym = ((uint32_t)(((uint16_t)(v_node & 32767u))));
-+        if (v_back_ref_dist_sym < 4u) {
-+          v_back_ref_dist_premap_minus_1 = v_back_ref_dist_sym;
-+        } else if (v_back_ref_dist_sym < 40u) {
-+          v_back_ref_dist_n_bits = ((v_back_ref_dist_sym - 2u) >> 1u);
-+          v_back_ref_dist_premap_minus_1 = ((((uint32_t)(2u)) + (v_back_ref_dist_sym & 1u)) << v_back_ref_dist_n_bits);
-+          while (self->private_impl.f_n_bits < v_back_ref_dist_n_bits) {
-+            {
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint8_t t_6 = *iop_a_src++;
-+              v_c8 = t_6;
-             }
--          } else {
--            if (8u <= ((uint64_t)(v_s.len))) {
--              v_bits_unpacked[0u] = v_s.ptr[5u];
--              v_bits_unpacked[1u] = v_s.ptr[4u];
--              v_bits_unpacked[2u] = v_s.ptr[3u];
--              v_bits_unpacked[3u] = v_s.ptr[2u];
--              v_bits_unpacked[4u] = v_s.ptr[1u];
--              v_bits_unpacked[5u] = v_s.ptr[0u];
--              v_bits_unpacked[6u] = v_s.ptr[7u];
--              v_bits_unpacked[7u] = v_s.ptr[6u];
--              v_s = wuffs_base__slice_u8__subslice_i(v_s, 8u);
-+            if (self->private_impl.f_n_bits >= v_back_ref_dist_n_bits) {
-+              status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
-+              goto exit;
-             }
-+            self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
-+            self->private_impl.f_n_bits += 8u;
-           }
--          wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 8));
-+          v_back_ref_dist_premap_minus_1 += (self->private_impl.f_bits & ((((uint32_t)(1u)) << v_back_ref_dist_n_bits) - 1u));
-+          self->private_impl.f_bits >>= v_back_ref_dist_n_bits;
-+          self->private_impl.f_n_bits -= v_back_ref_dist_n_bits;
-         }
--        v_x += (((uint32_t)(1u)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0u]);
-+        if (v_back_ref_dist_premap_minus_1 >= 120u) {
-+          v_back_ref_dist_minus_1 = (v_back_ref_dist_premap_minus_1 - 120u);
-+        } else {
-+          v_dm = ((uint32_t)(WUFFS_WEBP__DISTANCE_MAP[v_back_ref_dist_premap_minus_1]));
-+          v_dy = (v_dm >> 4u);
-+          v_dx = ((uint32_t)(7u - (v_dm & 15u)));
-+          v_back_ref_dist_minus_1 = ((uint32_t)((a_width * v_dy) + v_dx));
-+        }
-+        v_p_end = (v_p + ((uint64_t)(((v_back_ref_len_minus_1 + 1u) * 4u))));
-+        v_dist4 = ((((uint64_t)(v_back_ref_dist_minus_1)) * 4u) + 4u);
-+        if ((v_p_end > v_p_max) || (v_p_end > ((uint64_t)(a_dst.len))) || (v_p < v_dist4)) {
-+          status = wuffs_base__make_status(wuffs_webp__error__bad_back_reference);
-+          goto exit;
-+        }
-+        v_q = (v_p - v_dist4);
-+        while ((v_q < v_p) && (v_p < v_p_end)) {
-+          a_dst.ptr[v_p] = a_dst.ptr[v_q];
-+          v_p += 1u;
-+          v_q += 1u;
-+        }
-+        v_x += (v_back_ref_len_minus_1 + 1u);
-+        while (v_x >= a_width) {
-+          v_x -= a_width;
-+          v_y += 1u;
-+        }
-+        continue;
-+      } else {
-+        if ((v_color_cache_p > v_p) || (v_p > ((uint64_t)(a_dst.len)))) {
-+          status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_dst_buffer);
-+          goto exit;
-+        }
-+        v_color_cache_pixels = wuffs_base__slice_u8__subslice_ij(a_dst, v_color_cache_p, v_p);
-+        v_color_cache_p = v_p;
-+        v_color_cache_shift = ((32u - self->private_impl.f_color_cache_bits) & 31u);
-+        while (((uint64_t)(v_color_cache_pixels.len)) >= 4u) {
-+          v_color = wuffs_base__peek_u32le__no_bounds_check(v_color_cache_pixels.ptr);
-+          self->private_data.f_color_cache[((((uint32_t)(v_color * 506832829u)) >> v_color_cache_shift) & 2047u)] = v_color;
-+          v_color_cache_pixels = wuffs_base__slice_u8__subslice_i(v_color_cache_pixels, 4u);
-+        }
-+        v_color = self->private_data.f_color_cache[((v_pixel_g - 280u) & 2047u)];
-+      }
-+      if (v_p > ((uint64_t)(a_dst.len))) {
-+        status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_dst_buffer);
-+        goto exit;
-+      }
-+      v_dst_pixel = wuffs_base__slice_u8__subslice_i(a_dst, v_p);
-+      if (((uint64_t)(v_dst_pixel.len)) < 4u) {
-+        status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_dst_buffer);
-+        goto exit;
-+      }
-+      wuffs_base__poke_u32le__no_bounds_check(v_dst_pixel.ptr, v_color);
-+      v_p += 4u;
-+      v_x += 1u;
-+      if (v_x == a_width) {
-+        v_x = 0u;
-+        v_y += 1u;
-       }
-     }
--    v_prev_row = v_curr_row;
--    v_y += (((uint32_t)(1u)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][3u]);
--  }
--  return wuffs_base__make_status(NULL);
--}
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG)
-+    goto ok;
-+    ok:
-+    self->private_impl.p_decode_pixels_slow = 0;
-+    goto exit;
-+  }
- 
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA)
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_pixels_slow = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_pixels_slow.v_p = v_p;
-+  self->private_data.s_decode_pixels_slow.v_p_max = v_p_max;
-+  self->private_data.s_decode_pixels_slow.v_tile_size_log2 = v_tile_size_log2;
-+  self->private_data.s_decode_pixels_slow.v_width_in_tiles = v_width_in_tiles;
-+  self->private_data.s_decode_pixels_slow.v_x = v_x;
-+  self->private_data.s_decode_pixels_slow.v_y = v_y;
-+  self->private_data.s_decode_pixels_slow.v_hg = v_hg;
-+  self->private_data.s_decode_pixels_slow.v_node = v_node;
-+  self->private_data.s_decode_pixels_slow.v_color = v_color;
-+  self->private_data.s_decode_pixels_slow.v_back_ref_len_n_bits = v_back_ref_len_n_bits;
-+  self->private_data.s_decode_pixels_slow.v_back_ref_len_minus_1 = v_back_ref_len_minus_1;
-+  self->private_data.s_decode_pixels_slow.v_back_ref_dist_n_bits = v_back_ref_dist_n_bits;
-+  self->private_data.s_decode_pixels_slow.v_back_ref_dist_premap_minus_1 = v_back_ref_dist_premap_minus_1;
-+  self->private_data.s_decode_pixels_slow.v_color_cache_p = v_color_cache_p;
- 
--// ---------------- Status Codes Implementations
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
- 
--const char wuffs_tga__error__bad_header[] = "#tga: bad header";
--const char wuffs_tga__error__bad_run_length_encoding[] = "#tga: bad run length encoding";
--const char wuffs_tga__error__truncated_input[] = "#tga: truncated input";
--const char wuffs_tga__error__unsupported_tga_file[] = "#tga: unsupported TGA file";
-+  return status;
-+}
- 
--// ---------------- Private Consts
-+// -------- func webp.decoder.apply_transform_predictor
- 
--// ---------------- Private Initializer Prototypes
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_webp__decoder__apply_transform_predictor(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__slice_u8 a_pix,
-+    wuffs_base__slice_u8 a_tile_data) {
-+  uint64_t v_w4 = 0;
-+  wuffs_base__slice_u8 v_prev_row = {0};
-+  wuffs_base__slice_u8 v_curr_row = {0};
-+  uint32_t v_tile_size_log2 = 0;
-+  uint32_t v_tiles_per_row = 0;
-+  uint32_t v_mask = 0;
-+  uint32_t v_y = 0;
-+  uint32_t v_x = 0;
-+  uint64_t v_t = 0;
-+  wuffs_base__slice_u8 v_tile_data = {0};
-+  uint8_t v_mode = 0;
-+  uint32_t v_l0 = 0;
-+  uint32_t v_l1 = 0;
-+  uint32_t v_l2 = 0;
-+  uint32_t v_l3 = 0;
-+  uint32_t v_c0 = 0;
-+  uint32_t v_c1 = 0;
-+  uint32_t v_c2 = 0;
-+  uint32_t v_c3 = 0;
-+  uint32_t v_t0 = 0;
-+  uint32_t v_t1 = 0;
-+  uint32_t v_t2 = 0;
-+  uint32_t v_t3 = 0;
-+  uint32_t v_sum_l = 0;
-+  uint32_t v_sum_t = 0;
-+
-+  if ((self->private_impl.f_width <= 0u) || (self->private_impl.f_height <= 0u)) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+  v_w4 = ((uint64_t)((self->private_impl.f_width * 4u)));
-+  v_curr_row = wuffs_base__utility__empty_slice_u8();
-+  if (v_w4 <= ((uint64_t)(a_pix.len))) {
-+    v_curr_row = wuffs_base__slice_u8__subslice_j(a_pix, v_w4);
-+  }
-+  if (((uint64_t)(v_curr_row.len)) >= 4u) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+    v_curr_row.ptr[3u] += 255u;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+  }
-+  while (((uint64_t)(v_curr_row.len)) >= 8u) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+    v_curr_row.ptr[4u] += v_curr_row.ptr[0u];
-+    v_curr_row.ptr[5u] += v_curr_row.ptr[1u];
-+    v_curr_row.ptr[6u] += v_curr_row.ptr[2u];
-+    v_curr_row.ptr[7u] += v_curr_row.ptr[3u];
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+    v_curr_row = wuffs_base__slice_u8__subslice_i(v_curr_row, 4u);
-+  }
-+  v_tile_size_log2 = ((uint32_t)(self->private_impl.f_transform_tile_size_log2[0u]));
-+  v_tiles_per_row = ((self->private_impl.f_width + ((((uint32_t)(1u)) << v_tile_size_log2) - 1u)) >> v_tile_size_log2);
-+  v_mask = ((((uint32_t)(1u)) << v_tile_size_log2) - 1u);
-+  v_y = 1u;
-+  while (v_y < self->private_impl.f_height) {
-+    v_t = ((uint64_t)((4u * (v_y >> v_tile_size_log2) * v_tiles_per_row)));
-+    v_tile_data = wuffs_base__utility__empty_slice_u8();
-+    if (v_t <= ((uint64_t)(a_tile_data.len))) {
-+      v_tile_data = wuffs_base__slice_u8__subslice_i(a_tile_data, v_t);
-+      if (((uint64_t)(v_tile_data.len)) >= 4u) {
-+        v_mode = ((uint8_t)(v_tile_data.ptr[1u] & 15u));
-+        v_tile_data = wuffs_base__slice_u8__subslice_i(v_tile_data, 4u);
-+      }
-+    }
-+    if (v_w4 <= ((uint64_t)(a_pix.len))) {
-+      v_prev_row = a_pix;
-+      a_pix = wuffs_base__slice_u8__subslice_i(a_pix, v_w4);
-+      v_curr_row = a_pix;
-+    }
-+    if ((((uint64_t)(v_prev_row.len)) >= 4u) && (((uint64_t)(v_curr_row.len)) >= 4u)) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+      v_curr_row.ptr[0u] += v_prev_row.ptr[0u];
-+      v_curr_row.ptr[1u] += v_prev_row.ptr[1u];
-+      v_curr_row.ptr[2u] += v_prev_row.ptr[2u];
-+      v_curr_row.ptr[3u] += v_prev_row.ptr[3u];
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+    }
-+    v_x = 1u;
-+    while (v_x < self->private_impl.f_width) {
-+      if (((v_x & v_mask) == 0u) && (((uint64_t)(v_tile_data.len)) >= 4u)) {
-+        v_mode = ((uint8_t)(v_tile_data.ptr[1u] & 15u));
-+        v_tile_data = wuffs_base__slice_u8__subslice_i(v_tile_data, 4u);
-+      }
-+      if ((((uint64_t)(v_prev_row.len)) < 12u) || (((uint64_t)(v_curr_row.len)) < 8u)) {
-+        break;
-+      }
-+      if (v_mode == 0u) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        v_curr_row.ptr[7u] += 255u;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+      } else if (v_mode == 1u) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        v_curr_row.ptr[4u] += v_curr_row.ptr[0u];
-+        v_curr_row.ptr[5u] += v_curr_row.ptr[1u];
-+        v_curr_row.ptr[6u] += v_curr_row.ptr[2u];
-+        v_curr_row.ptr[7u] += v_curr_row.ptr[3u];
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+      } else if (v_mode == 2u) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        v_curr_row.ptr[4u] += v_prev_row.ptr[4u];
-+        v_curr_row.ptr[5u] += v_prev_row.ptr[5u];
-+        v_curr_row.ptr[6u] += v_prev_row.ptr[6u];
-+        v_curr_row.ptr[7u] += v_prev_row.ptr[7u];
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+      } else if (v_mode == 3u) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        v_curr_row.ptr[4u] += v_prev_row.ptr[8u];
-+        v_curr_row.ptr[5u] += v_prev_row.ptr[9u];
-+        v_curr_row.ptr[6u] += v_prev_row.ptr[10u];
-+        v_curr_row.ptr[7u] += v_prev_row.ptr[11u];
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+      } else if (v_mode == 4u) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        v_curr_row.ptr[4u] += v_prev_row.ptr[0u];
-+        v_curr_row.ptr[5u] += v_prev_row.ptr[1u];
-+        v_curr_row.ptr[6u] += v_prev_row.ptr[2u];
-+        v_curr_row.ptr[7u] += v_prev_row.ptr[3u];
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+      } else if (v_mode == 5u) {
-+        v_l0 = ((((uint32_t)(v_curr_row.ptr[0u])) + ((uint32_t)(v_prev_row.ptr[8u]))) / 2u);
-+        v_l1 = ((((uint32_t)(v_curr_row.ptr[1u])) + ((uint32_t)(v_prev_row.ptr[9u]))) / 2u);
-+        v_l2 = ((((uint32_t)(v_curr_row.ptr[2u])) + ((uint32_t)(v_prev_row.ptr[10u]))) / 2u);
-+        v_l3 = ((((uint32_t)(v_curr_row.ptr[3u])) + ((uint32_t)(v_prev_row.ptr[11u]))) / 2u);
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        v_curr_row.ptr[4u] += ((uint8_t)(((v_l0 + ((uint32_t)(v_prev_row.ptr[4u]))) / 2u)));
-+        v_curr_row.ptr[5u] += ((uint8_t)(((v_l1 + ((uint32_t)(v_prev_row.ptr[5u]))) / 2u)));
-+        v_curr_row.ptr[6u] += ((uint8_t)(((v_l2 + ((uint32_t)(v_prev_row.ptr[6u]))) / 2u)));
-+        v_curr_row.ptr[7u] += ((uint8_t)(((v_l3 + ((uint32_t)(v_prev_row.ptr[7u]))) / 2u)));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+      } else if (v_mode == 6u) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        v_curr_row.ptr[4u] += ((uint8_t)(((((uint32_t)(v_curr_row.ptr[0u])) + ((uint32_t)(v_prev_row.ptr[0u]))) / 2u)));
-+        v_curr_row.ptr[5u] += ((uint8_t)(((((uint32_t)(v_curr_row.ptr[1u])) + ((uint32_t)(v_prev_row.ptr[1u]))) / 2u)));
-+        v_curr_row.ptr[6u] += ((uint8_t)(((((uint32_t)(v_curr_row.ptr[2u])) + ((uint32_t)(v_prev_row.ptr[2u]))) / 2u)));
-+        v_curr_row.ptr[7u] += ((uint8_t)(((((uint32_t)(v_curr_row.ptr[3u])) + ((uint32_t)(v_prev_row.ptr[3u]))) / 2u)));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+      } else if (v_mode == 7u) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        v_curr_row.ptr[4u] += ((uint8_t)(((((uint32_t)(v_curr_row.ptr[0u])) + ((uint32_t)(v_prev_row.ptr[4u]))) / 2u)));
-+        v_curr_row.ptr[5u] += ((uint8_t)(((((uint32_t)(v_curr_row.ptr[1u])) + ((uint32_t)(v_prev_row.ptr[5u]))) / 2u)));
-+        v_curr_row.ptr[6u] += ((uint8_t)(((((uint32_t)(v_curr_row.ptr[2u])) + ((uint32_t)(v_prev_row.ptr[6u]))) / 2u)));
-+        v_curr_row.ptr[7u] += ((uint8_t)(((((uint32_t)(v_curr_row.ptr[3u])) + ((uint32_t)(v_prev_row.ptr[7u]))) / 2u)));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+      } else if (v_mode == 8u) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        v_curr_row.ptr[4u] += ((uint8_t)(((((uint32_t)(v_prev_row.ptr[0u])) + ((uint32_t)(v_prev_row.ptr[4u]))) / 2u)));
-+        v_curr_row.ptr[5u] += ((uint8_t)(((((uint32_t)(v_prev_row.ptr[1u])) + ((uint32_t)(v_prev_row.ptr[5u]))) / 2u)));
-+        v_curr_row.ptr[6u] += ((uint8_t)(((((uint32_t)(v_prev_row.ptr[2u])) + ((uint32_t)(v_prev_row.ptr[6u]))) / 2u)));
-+        v_curr_row.ptr[7u] += ((uint8_t)(((((uint32_t)(v_prev_row.ptr[3u])) + ((uint32_t)(v_prev_row.ptr[7u]))) / 2u)));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+      } else if (v_mode == 9u) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        v_curr_row.ptr[4u] += ((uint8_t)(((((uint32_t)(v_prev_row.ptr[4u])) + ((uint32_t)(v_prev_row.ptr[8u]))) / 2u)));
-+        v_curr_row.ptr[5u] += ((uint8_t)(((((uint32_t)(v_prev_row.ptr[5u])) + ((uint32_t)(v_prev_row.ptr[9u]))) / 2u)));
-+        v_curr_row.ptr[6u] += ((uint8_t)(((((uint32_t)(v_prev_row.ptr[6u])) + ((uint32_t)(v_prev_row.ptr[10u]))) / 2u)));
-+        v_curr_row.ptr[7u] += ((uint8_t)(((((uint32_t)(v_prev_row.ptr[7u])) + ((uint32_t)(v_prev_row.ptr[11u]))) / 2u)));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+      } else if (v_mode == 10u) {
-+        v_l0 = ((((uint32_t)(v_curr_row.ptr[0u])) + ((uint32_t)(v_prev_row.ptr[0u]))) / 2u);
-+        v_l1 = ((((uint32_t)(v_curr_row.ptr[1u])) + ((uint32_t)(v_prev_row.ptr[1u]))) / 2u);
-+        v_l2 = ((((uint32_t)(v_curr_row.ptr[2u])) + ((uint32_t)(v_prev_row.ptr[2u]))) / 2u);
-+        v_l3 = ((((uint32_t)(v_curr_row.ptr[3u])) + ((uint32_t)(v_prev_row.ptr[3u]))) / 2u);
-+        v_t0 = ((((uint32_t)(v_prev_row.ptr[4u])) + ((uint32_t)(v_prev_row.ptr[8u]))) / 2u);
-+        v_t1 = ((((uint32_t)(v_prev_row.ptr[5u])) + ((uint32_t)(v_prev_row.ptr[9u]))) / 2u);
-+        v_t2 = ((((uint32_t)(v_prev_row.ptr[6u])) + ((uint32_t)(v_prev_row.ptr[10u]))) / 2u);
-+        v_t3 = ((((uint32_t)(v_prev_row.ptr[7u])) + ((uint32_t)(v_prev_row.ptr[11u]))) / 2u);
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        v_curr_row.ptr[4u] += ((uint8_t)(((v_l0 + v_t0) / 2u)));
-+        v_curr_row.ptr[5u] += ((uint8_t)(((v_l1 + v_t1) / 2u)));
-+        v_curr_row.ptr[6u] += ((uint8_t)(((v_l2 + v_t2) / 2u)));
-+        v_curr_row.ptr[7u] += ((uint8_t)(((v_l3 + v_t3) / 2u)));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+      } else if (v_mode == 11u) {
-+        v_l0 = ((uint32_t)(v_curr_row.ptr[0u]));
-+        v_l1 = ((uint32_t)(v_curr_row.ptr[1u]));
-+        v_l2 = ((uint32_t)(v_curr_row.ptr[2u]));
-+        v_l3 = ((uint32_t)(v_curr_row.ptr[3u]));
-+        v_c0 = ((uint32_t)(v_prev_row.ptr[0u]));
-+        v_c1 = ((uint32_t)(v_prev_row.ptr[1u]));
-+        v_c2 = ((uint32_t)(v_prev_row.ptr[2u]));
-+        v_c3 = ((uint32_t)(v_prev_row.ptr[3u]));
-+        v_t0 = ((uint32_t)(v_prev_row.ptr[4u]));
-+        v_t1 = ((uint32_t)(v_prev_row.ptr[5u]));
-+        v_t2 = ((uint32_t)(v_prev_row.ptr[6u]));
-+        v_t3 = ((uint32_t)(v_prev_row.ptr[7u]));
-+        v_sum_l = (wuffs_webp__decoder__absolute_difference(self, v_c0, v_t0) +
-+            wuffs_webp__decoder__absolute_difference(self, v_c1, v_t1) +
-+            wuffs_webp__decoder__absolute_difference(self, v_c2, v_t2) +
-+            wuffs_webp__decoder__absolute_difference(self, v_c3, v_t3));
-+        v_sum_t = (wuffs_webp__decoder__absolute_difference(self, v_c0, v_l0) +
-+            wuffs_webp__decoder__absolute_difference(self, v_c1, v_l1) +
-+            wuffs_webp__decoder__absolute_difference(self, v_c2, v_l2) +
-+            wuffs_webp__decoder__absolute_difference(self, v_c3, v_l3));
-+        if (v_sum_l < v_sum_t) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+          v_curr_row.ptr[4u] += ((uint8_t)(v_l0));
-+          v_curr_row.ptr[5u] += ((uint8_t)(v_l1));
-+          v_curr_row.ptr[6u] += ((uint8_t)(v_l2));
-+          v_curr_row.ptr[7u] += ((uint8_t)(v_l3));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+        } else {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+          v_curr_row.ptr[4u] += ((uint8_t)(v_t0));
-+          v_curr_row.ptr[5u] += ((uint8_t)(v_t1));
-+          v_curr_row.ptr[6u] += ((uint8_t)(v_t2));
-+          v_curr_row.ptr[7u] += ((uint8_t)(v_t3));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+        }
-+      } else if (v_mode == 12u) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        v_curr_row.ptr[4u] += wuffs_webp__decoder__mode12(self, v_curr_row.ptr[0u], v_prev_row.ptr[4u], v_prev_row.ptr[0u]);
-+        v_curr_row.ptr[5u] += wuffs_webp__decoder__mode12(self, v_curr_row.ptr[1u], v_prev_row.ptr[5u], v_prev_row.ptr[1u]);
-+        v_curr_row.ptr[6u] += wuffs_webp__decoder__mode12(self, v_curr_row.ptr[2u], v_prev_row.ptr[6u], v_prev_row.ptr[2u]);
-+        v_curr_row.ptr[7u] += wuffs_webp__decoder__mode12(self, v_curr_row.ptr[3u], v_prev_row.ptr[7u], v_prev_row.ptr[3u]);
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+      } else if (v_mode == 13u) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        v_curr_row.ptr[4u] += wuffs_webp__decoder__mode13(self, v_curr_row.ptr[0u], v_prev_row.ptr[4u], v_prev_row.ptr[0u]);
-+        v_curr_row.ptr[5u] += wuffs_webp__decoder__mode13(self, v_curr_row.ptr[1u], v_prev_row.ptr[5u], v_prev_row.ptr[1u]);
-+        v_curr_row.ptr[6u] += wuffs_webp__decoder__mode13(self, v_curr_row.ptr[2u], v_prev_row.ptr[6u], v_prev_row.ptr[2u]);
-+        v_curr_row.ptr[7u] += wuffs_webp__decoder__mode13(self, v_curr_row.ptr[3u], v_prev_row.ptr[7u], v_prev_row.ptr[3u]);
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+      }
-+      v_curr_row = wuffs_base__slice_u8__subslice_i(v_curr_row, 4u);
-+      v_prev_row = wuffs_base__slice_u8__subslice_i(v_prev_row, 4u);
-+      v_x += 1u;
-+    }
-+    v_y += 1u;
-+  }
-+  return wuffs_base__make_empty_struct();
-+}
- 
--// ---------------- Private Function Prototypes
-+// -------- func webp.decoder.absolute_difference
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_tga__decoder__do_decode_image_config(
--    wuffs_tga__decoder* self,
--    wuffs_base__image_config* a_dst,
--    wuffs_base__io_buffer* a_src);
-+static uint32_t
-+wuffs_webp__decoder__absolute_difference(
-+    const wuffs_webp__decoder* self,
-+    uint32_t a_a,
-+    uint32_t a_b) {
-+  if (a_a < a_b) {
-+    return (a_b - a_a);
-+  }
-+  return (a_a - a_b);
-+}
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_tga__decoder__do_decode_frame_config(
--    wuffs_tga__decoder* self,
--    wuffs_base__frame_config* a_dst,
--    wuffs_base__io_buffer* a_src);
-+// -------- func webp.decoder.mode12
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_tga__decoder__do_decode_frame(
--    wuffs_tga__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts);
-+static uint8_t
-+wuffs_webp__decoder__mode12(
-+    const wuffs_webp__decoder* self,
-+    uint8_t a_l,
-+    uint8_t a_t,
-+    uint8_t a_tl) {
-+  uint32_t v_v = 0;
- 
--// ---------------- VTables
-+  v_v = ((uint32_t)((((uint32_t)(a_l)) + ((uint32_t)(a_t))) - ((uint32_t)(a_tl))));
-+  if (v_v < 256u) {
-+    return ((uint8_t)(v_v));
-+  } else if (v_v < 512u) {
-+    return 255u;
-+  }
-+  return 0u;
-+}
- 
--const wuffs_base__image_decoder__func_ptrs
--wuffs_tga__decoder__func_ptrs_for__wuffs_base__image_decoder = {
--  (wuffs_base__status(*)(void*,
--      wuffs_base__pixel_buffer*,
--      wuffs_base__io_buffer*,
--      wuffs_base__pixel_blend,
--      wuffs_base__slice_u8,
--      wuffs_base__decode_frame_options*))(&wuffs_tga__decoder__decode_frame),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__frame_config*,
--      wuffs_base__io_buffer*))(&wuffs_tga__decoder__decode_frame_config),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__image_config*,
--      wuffs_base__io_buffer*))(&wuffs_tga__decoder__decode_image_config),
--  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_tga__decoder__frame_dirty_rect),
--  (uint64_t(*)(const void*,
--      uint32_t))(&wuffs_tga__decoder__get_quirk),
--  (uint64_t(*)(const void*))(&wuffs_tga__decoder__history_retain_length),
--  (uint32_t(*)(const void*))(&wuffs_tga__decoder__num_animation_loops),
--  (uint64_t(*)(const void*))(&wuffs_tga__decoder__num_decoded_frame_configs),
--  (uint64_t(*)(const void*))(&wuffs_tga__decoder__num_decoded_frames),
--  (wuffs_base__status(*)(void*,
--      uint64_t,
--      uint64_t))(&wuffs_tga__decoder__restart_frame),
--  (wuffs_base__status(*)(void*,
--      uint32_t,
--      uint64_t))(&wuffs_tga__decoder__set_quirk),
--  (wuffs_base__empty_struct(*)(void*,
--      uint32_t,
--      bool))(&wuffs_tga__decoder__set_report_metadata),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__io_buffer*,
--      wuffs_base__more_information*,
--      wuffs_base__io_buffer*))(&wuffs_tga__decoder__tell_me_more),
--  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_tga__decoder__workbuf_len),
--};
-+// -------- func webp.decoder.mode13
- 
--// ---------------- Initializer Implementations
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint8_t
-+wuffs_webp__decoder__mode13(
-+    const wuffs_webp__decoder* self,
-+    uint8_t a_l,
-+    uint8_t a_t,
-+    uint8_t a_tl) {
-+  uint32_t v_x = 0;
-+  uint32_t v_y = 0;
-+  uint32_t v_z = 0;
-+  uint32_t v_v = 0;
- 
--wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_tga__decoder__initialize(
--    wuffs_tga__decoder* self,
--    size_t sizeof_star_self,
--    uint64_t wuffs_version,
--    uint32_t options){
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (sizeof(*self) != sizeof_star_self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  v_x = ((((uint32_t)(a_l)) + ((uint32_t)(a_t))) / 2u);
-+  v_y = ((uint32_t)(a_tl));
-+  v_z = ((uint32_t)(v_x - v_y));
-+  v_v = ((uint32_t)(v_x + wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(v_z + (v_z >> 31u))), 1u)));
-+  if (v_v < 256u) {
-+    return ((uint8_t)(v_v));
-+  } else if (v_v < 512u) {
-+    return 255u;
-   }
--  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
--      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
--    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+  return 0u;
-+}
-+
-+// -------- func webp.decoder.apply_transform_cross_color
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_webp__decoder__apply_transform_cross_color(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__slice_u8 a_pix,
-+    wuffs_base__slice_u8 a_tile_data) {
-+  uint32_t v_tile_size_log2 = 0;
-+  uint32_t v_tiles_per_row = 0;
-+  uint32_t v_mask = 0;
-+  uint32_t v_y = 0;
-+  uint32_t v_x = 0;
-+  uint64_t v_t = 0;
-+  wuffs_base__slice_u8 v_tile_data = {0};
-+  uint32_t v_g2r = 0;
-+  uint32_t v_g2b = 0;
-+  uint32_t v_r2b = 0;
-+  uint8_t v_b = 0;
-+  uint8_t v_g = 0;
-+  uint8_t v_r = 0;
-+
-+  v_tile_size_log2 = ((uint32_t)(self->private_impl.f_transform_tile_size_log2[1u]));
-+  v_tiles_per_row = ((self->private_impl.f_width + ((((uint32_t)(1u)) << v_tile_size_log2) - 1u)) >> v_tile_size_log2);
-+  v_mask = ((((uint32_t)(1u)) << v_tile_size_log2) - 1u);
-+  v_y = 0u;
-+  while (v_y < self->private_impl.f_height) {
-+    v_t = ((uint64_t)((4u * (v_y >> v_tile_size_log2) * v_tiles_per_row)));
-+    v_tile_data = wuffs_base__utility__empty_slice_u8();
-+    if (v_t <= ((uint64_t)(a_tile_data.len))) {
-+      v_tile_data = wuffs_base__slice_u8__subslice_i(a_tile_data, v_t);
-+    }
-+    v_x = 0u;
-+    while (v_x < self->private_impl.f_width) {
-+      if (((v_x & v_mask) == 0u) && (((uint64_t)(v_tile_data.len)) >= 4u)) {
-+        v_g2r = wuffs_base__utility__sign_extend_convert_u8_u32(v_tile_data.ptr[0u]);
-+        v_g2b = wuffs_base__utility__sign_extend_convert_u8_u32(v_tile_data.ptr[1u]);
-+        v_r2b = wuffs_base__utility__sign_extend_convert_u8_u32(v_tile_data.ptr[2u]);
-+        v_tile_data = wuffs_base__slice_u8__subslice_i(v_tile_data, 4u);
-+      }
-+      if (((uint64_t)(a_pix.len)) >= 4u) {
-+        v_b = a_pix.ptr[0u];
-+        v_g = a_pix.ptr[1u];
-+        v_r = a_pix.ptr[2u];
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        v_r += ((uint8_t)((((uint32_t)(wuffs_base__utility__sign_extend_convert_u8_u32(v_g) * v_g2r)) >> 5u)));
-+        v_b += ((uint8_t)((((uint32_t)(wuffs_base__utility__sign_extend_convert_u8_u32(v_g) * v_g2b)) >> 5u)));
-+        v_b += ((uint8_t)((((uint32_t)(wuffs_base__utility__sign_extend_convert_u8_u32(v_r) * v_r2b)) >> 5u)));
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+        a_pix.ptr[0u] = v_b;
-+        a_pix.ptr[2u] = v_r;
-+        a_pix = wuffs_base__slice_u8__subslice_i(a_pix, 4u);
-+      }
-+      v_x += 1u;
-+    }
-+    v_y += 1u;
-   }
-+  return wuffs_base__make_empty_struct();
-+}
-+
-+// -------- func webp.decoder.apply_transform_subtract_green
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_webp__decoder__apply_transform_subtract_green(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__slice_u8 a_pix) {
-+  wuffs_base__slice_u8 v_p = {0};
-+  uint8_t v_g = 0;
- 
--  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
--    // The whole point of this if-check is to detect an uninitialized *self.
--    // We disable the warning on GCC. Clang-5.0 does not have this warning.
--#if !defined(__clang__) && defined(__GNUC__)
-+  {
-+    wuffs_base__slice_u8 i_slice_p = a_pix;
-+    v_p.ptr = i_slice_p.ptr;
-+    v_p.len = 4;
-+    const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 4) * 4));
-+    while (v_p.ptr < i_end0_p) {
-+      v_g = v_p.ptr[1u];
-+#if defined(__GNUC__)
- #pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+#pragma GCC diagnostic ignored "-Wconversion"
- #endif
--    if (self->private_impl.magic != 0) {
--      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
--    }
--#if !defined(__clang__) && defined(__GNUC__)
-+      v_p.ptr[0u] += v_g;
-+      v_p.ptr[2u] += v_g;
-+#if defined(__GNUC__)
- #pragma GCC diagnostic pop
- #endif
--  } else {
--    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
--      memset(self, 0, sizeof(*self));
--      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
--    } else {
--      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+      v_p.ptr += 4;
-     }
-+    v_p.len = 0;
-   }
--
--  self->private_impl.magic = WUFFS_BASE__MAGIC;
--  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
--      wuffs_base__image_decoder__vtable_name;
--  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
--      (const void*)(&wuffs_tga__decoder__func_ptrs_for__wuffs_base__image_decoder);
--  return wuffs_base__make_status(NULL);
-+  return wuffs_base__make_empty_struct();
- }
- 
--wuffs_tga__decoder*
--wuffs_tga__decoder__alloc(void) {
--  wuffs_tga__decoder* x =
--      (wuffs_tga__decoder*)(calloc(sizeof(wuffs_tga__decoder), 1));
--  if (!x) {
--    return NULL;
-+// -------- func webp.decoder.apply_transform_color_indexing
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_webp__decoder__apply_transform_color_indexing(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__slice_u8 a_pix) {
-+  uint32_t v_tile_size_log2 = 0;
-+  uint32_t v_bits_per_pixel = 0;
-+  uint32_t v_x_mask = 0;
-+  uint32_t v_s_mask = 0;
-+  uint64_t v_src_index = 0;
-+  uint32_t v_y = 0;
-+  uint64_t v_di = 0;
-+  uint64_t v_dj = 0;
-+  wuffs_base__slice_u8 v_dst = {0};
-+  uint32_t v_x = 0;
-+  uint32_t v_s = 0;
-+  uint32_t v_p = 0;
-+  uint8_t v_p0 = 0;
-+  uint8_t v_p1 = 0;
-+  uint8_t v_p2 = 0;
-+  uint8_t v_p3 = 0;
-+
-+  v_tile_size_log2 = ((uint32_t)(self->private_impl.f_transform_tile_size_log2[3u]));
-+  if (v_tile_size_log2 == 0u) {
-+    {
-+      wuffs_base__slice_u8 i_slice_dst = a_pix;
-+      v_dst.ptr = i_slice_dst.ptr;
-+      v_dst.len = 4;
-+      const uint8_t* i_end0_dst = wuffs_private_impl__ptr_u8_plus_len(v_dst.ptr, (((i_slice_dst.len - (size_t)(v_dst.ptr - i_slice_dst.ptr)) / 4) * 4));
-+      while (v_dst.ptr < i_end0_dst) {
-+        v_p = (((uint32_t)(v_dst.ptr[1u])) * 4u);
-+        v_p0 = self->private_data.f_palette[(v_p + 0u)];
-+        v_p1 = self->private_data.f_palette[(v_p + 1u)];
-+        v_p2 = self->private_data.f_palette[(v_p + 2u)];
-+        v_p3 = self->private_data.f_palette[(v_p + 3u)];
-+        v_dst.ptr[0u] = v_p0;
-+        v_dst.ptr[1u] = v_p1;
-+        v_dst.ptr[2u] = v_p2;
-+        v_dst.ptr[3u] = v_p3;
-+        v_dst.ptr += 4;
-+      }
-+      v_dst.len = 0;
-+    }
-+    return wuffs_base__make_empty_struct();
-   }
--  if (wuffs_tga__decoder__initialize(
--      x, sizeof(wuffs_tga__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
--    free(x);
--    return NULL;
-+  v_bits_per_pixel = (((uint32_t)(8u)) >> v_tile_size_log2);
-+  v_x_mask = ((((uint32_t)(1u)) << v_tile_size_log2) - 1u);
-+  v_s_mask = ((((uint32_t)(1u)) << v_bits_per_pixel) - 1u);
-+  v_src_index = ((uint64_t)((self->private_impl.f_workbuf_offset_for_color_indexing + 1u)));
-+  v_y = 0u;
-+  while (v_y < self->private_impl.f_height) {
-+    v_di = ((uint64_t)((4u * (v_y + 0u) * self->private_impl.f_width)));
-+    v_dj = ((uint64_t)((4u * (v_y + 1u) * self->private_impl.f_width)));
-+    if ((v_di > v_dj) || (v_dj > ((uint64_t)(a_pix.len)))) {
-+      break;
-+    }
-+    v_dst = wuffs_base__slice_u8__subslice_ij(a_pix, v_di, v_dj);
-+    v_x = 0u;
-+    while (((uint64_t)(v_dst.len)) >= 4u) {
-+      if (((v_x & v_x_mask) == 0u) && (v_src_index < ((uint64_t)(a_pix.len)))) {
-+        v_s = ((uint32_t)(a_pix.ptr[v_src_index]));
-+        v_src_index += 4u;
-+      }
-+      v_p = ((v_s & v_s_mask) * 4u);
-+      v_s >>= v_bits_per_pixel;
-+      v_p0 = self->private_data.f_palette[(v_p + 0u)];
-+      v_p1 = self->private_data.f_palette[(v_p + 1u)];
-+      v_p2 = self->private_data.f_palette[(v_p + 2u)];
-+      v_p3 = self->private_data.f_palette[(v_p + 3u)];
-+      v_dst.ptr[0u] = v_p0;
-+      v_dst.ptr[1u] = v_p1;
-+      v_dst.ptr[2u] = v_p2;
-+      v_dst.ptr[3u] = v_p3;
-+      v_dst = wuffs_base__slice_u8__subslice_i(v_dst, 4u);
-+      v_x += 1u;
-+    }
-+    v_y += 1u;
-   }
--  return x;
--}
--
--size_t
--sizeof__wuffs_tga__decoder(void) {
--  return sizeof(wuffs_tga__decoder);
-+  return wuffs_base__make_empty_struct();
- }
- 
--// ---------------- Function Implementations
--
--// -------- func tga.decoder.get_quirk
-+// -------- func webp.decoder.get_quirk
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_tga__decoder__get_quirk(
--    const wuffs_tga__decoder* self,
-+wuffs_webp__decoder__get_quirk(
-+    const wuffs_webp__decoder* self,
-     uint32_t a_key) {
-   if (!self) {
-     return 0;
-@@ -59162,12 +73627,12 @@ wuffs_tga__decoder__get_quirk(
-   return 0u;
- }
- 
--// -------- func tga.decoder.set_quirk
-+// -------- func webp.decoder.set_quirk
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_tga__decoder__set_quirk(
--    wuffs_tga__decoder* self,
-+wuffs_webp__decoder__set_quirk(
-+    wuffs_webp__decoder* self,
-     uint32_t a_key,
-     uint64_t a_value) {
-   if (!self) {
-@@ -59183,12 +73648,12 @@ wuffs_tga__decoder__set_quirk(
-   return wuffs_base__make_status(wuffs_base__error__unsupported_option);
- }
- 
--// -------- func tga.decoder.decode_image_config
-+// -------- func webp.decoder.decode_image_config
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_tga__decoder__decode_image_config(
--    wuffs_tga__decoder* self,
-+wuffs_webp__decoder__decode_image_config(
-+    wuffs_webp__decoder* self,
-     wuffs_base__image_config* a_dst,
-     wuffs_base__io_buffer* a_src) {
-   if (!self) {
-@@ -59214,17 +73679,17 @@ wuffs_tga__decoder__decode_image_config(
- 
-   wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_image_config;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
-     while (true) {
-       {
--        wuffs_base__status t_0 = wuffs_tga__decoder__do_decode_image_config(self, a_dst, a_src);
-+        wuffs_base__status t_0 = wuffs_webp__decoder__do_decode_image_config(self, a_dst, a_src);
-         v_status = t_0;
-       }
-       if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_tga__error__truncated_input);
-+        status = wuffs_base__make_status(wuffs_webp__error__truncated_input);
-         goto exit;
-       }
-       status = v_status;
-@@ -59232,13 +73697,13 @@ wuffs_tga__decoder__decode_image_config(
-     }
- 
-     ok:
--    self->private_impl.p_decode_image_config[0] = 0;
-+    self->private_impl.p_decode_image_config = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.p_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-   self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
- 
-   goto exit;
-@@ -59249,19 +73714,19 @@ wuffs_tga__decoder__decode_image_config(
-   return status;
- }
- 
--// -------- func tga.decoder.do_decode_image_config
-+// -------- func webp.decoder.do_decode_image_config
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_tga__decoder__do_decode_image_config(
--    wuffs_tga__decoder* self,
-+wuffs_webp__decoder__do_decode_image_config(
-+    wuffs_webp__decoder* self,
-     wuffs_base__image_config* a_dst,
-     wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint32_t v_c = 0;
--  uint32_t v_c5 = 0;
--  uint32_t v_i = 0;
-+  uint32_t v_c32 = 0;
-+  uint64_t v_r_mark = 0;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -59274,10 +73739,7 @@ wuffs_tga__decoder__do_decode_image_config(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0];
--  if (coro_susp_point) {
--    v_i = self->private_data.s_do_decode_image_config[0].v_i;
--  }
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
-@@ -59287,411 +73749,446 @@ wuffs_tga__decoder__do_decode_image_config(
-     }
-     {
-       WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_0 = *iop_a_src++;
--      self->private_impl.f_header_id_length = t_0;
--    }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_1 = *iop_a_src++;
--      self->private_impl.f_header_color_map_type = t_1;
--    }
--    if (self->private_impl.f_header_color_map_type > 1u) {
--      status = wuffs_base__make_status(wuffs_tga__error__bad_header);
--      goto exit;
--    }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_2 = *iop_a_src++;
--      self->private_impl.f_header_image_type = t_2;
--    }
--    if ((self->private_impl.f_header_image_type == 1u) ||
--        (self->private_impl.f_header_image_type == 2u) ||
--        (self->private_impl.f_header_image_type == 3u) ||
--        (self->private_impl.f_header_image_type == 9u) ||
--        (self->private_impl.f_header_image_type == 10u) ||
--        (self->private_impl.f_header_image_type == 11u)) {
--    } else {
--      status = wuffs_base__make_status(wuffs_tga__error__bad_header);
--      goto exit;
--    }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
--      uint16_t t_3;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--        t_3 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
--        iop_a_src += 2;
-+      uint32_t t_0;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-       } else {
--        self->private_data.s_do_decode_image_config[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+        self->private_data.s_do_decode_image_config.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-         while (true) {
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--          uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
-+          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
-           *scratch <<= 8;
-           *scratch >>= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
--          if (num_bits_3 == 8) {
--            t_3 = ((uint16_t)(*scratch));
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
-+          if (num_bits_0 == 24) {
-+            t_0 = ((uint32_t)(*scratch));
-             break;
-           }
--          num_bits_3 += 8u;
--          *scratch |= ((uint64_t)(num_bits_3)) << 56;
-+          num_bits_0 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_0)) << 56;
-         }
-       }
--      self->private_impl.f_header_color_map_first_entry_index = t_3;
-+      v_c32 = t_0;
-+    }
-+    if (v_c32 != 1179011410u) {
-+      status = wuffs_base__make_status(wuffs_webp__error__bad_header);
-+      goto exit;
-     }
-     {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
--      uint16_t t_4;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--        t_4 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
--        iop_a_src += 2;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+      uint32_t t_1;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-       } else {
--        self->private_data.s_do_decode_image_config[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+        self->private_data.s_do_decode_image_config.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-         while (true) {
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--          uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
-+          uint64_t* scratch = &self->private_data.s_do_decode_image_config.scratch;
-+          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
-           *scratch <<= 8;
-           *scratch >>= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
--          if (num_bits_4 == 8) {
--            t_4 = ((uint16_t)(*scratch));
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
-+          if (num_bits_1 == 24) {
-+            t_1 = ((uint32_t)(*scratch));
-             break;
-           }
--          num_bits_4 += 8u;
--          *scratch |= ((uint64_t)(num_bits_4)) << 56;
-+          num_bits_1 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_1)) << 56;
-         }
-       }
--      self->private_impl.f_header_color_map_length = t_4;
-+      self->private_impl.f_riff_chunk_length = t_1;
-     }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_5 = *iop_a_src++;
--      self->private_impl.f_header_color_map_entry_size = t_5;
-+    if ((self->private_impl.f_riff_chunk_length & 1u) != 0u) {
-+      status = wuffs_base__make_status(wuffs_webp__error__bad_header);
-+      goto exit;
-     }
--    if (self->private_impl.f_header_color_map_type != 0u) {
--      if ((self->private_impl.f_header_color_map_first_entry_index != 0u) || (self->private_impl.f_header_color_map_length > 256u)) {
--        status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file);
--        goto exit;
--      } else if ((self->private_impl.f_header_color_map_entry_size != 15u) &&
--          (self->private_impl.f_header_color_map_entry_size != 16u) &&
--          (self->private_impl.f_header_color_map_entry_size != 24u) &&
--          (self->private_impl.f_header_color_map_entry_size != 32u)) {
--        status = wuffs_base__make_status(wuffs_tga__error__bad_header);
--        goto exit;
-+    while (true) {
-+      {
-+        const bool o_0_closed_a_src = a_src->meta.closed;
-+        const uint8_t* o_0_io2_a_src = io2_a_src;
-+        wuffs_private_impl__io_reader__limit(&io2_a_src, iop_a_src,
-+            ((uint64_t)(self->private_impl.f_riff_chunk_length)));
-+        if (a_src) {
-+          size_t n = ((size_t)(io2_a_src - a_src->data.ptr));
-+          a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n);
-+          a_src->meta.wi = n;
-+        }
-+        v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
-+        {
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          wuffs_base__status t_2 = wuffs_webp__decoder__do_decode_image_config_limited(self, a_src);
-+          v_status = t_2;
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+        }
-+        wuffs_private_impl__u32__sat_sub_indirect(&self->private_impl.f_riff_chunk_length, ((uint32_t)(wuffs_private_impl__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))))));
-+        io2_a_src = o_0_io2_a_src;
-+        if (a_src) {
-+          a_src->meta.closed = o_0_closed_a_src;
-+          a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
-+        }
-       }
--    } else {
--      if ((self->private_impl.f_header_color_map_first_entry_index != 0u) || (self->private_impl.f_header_color_map_length != 0u) || (self->private_impl.f_header_color_map_entry_size != 0u)) {
--        status = wuffs_base__make_status(wuffs_tga__error__bad_header);
-+      if (wuffs_base__status__is_ok(&v_status)) {
-+        break;
-+      } else if ( ! wuffs_base__status__is_suspension(&v_status)) {
-+        status = v_status;
-+        if (wuffs_base__status__is_error(&status)) {
-+          goto exit;
-+        } else if (wuffs_base__status__is_suspension(&status)) {
-+          status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+          goto exit;
-+        }
-+        goto ok;
-+      } else if ((v_status.repr == wuffs_base__suspension__short_read) && (self->private_impl.f_riff_chunk_length == 0u)) {
-+        status = wuffs_base__make_status(wuffs_webp__error__short_chunk);
-         goto exit;
-       }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
-     }
--    self->private_data.s_do_decode_image_config[0].scratch = 4u;
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
--    if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--      self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--      iop_a_src = io2_a_src;
--      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--      goto suspend;
-+    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
-+    if (a_dst != NULL) {
-+      wuffs_base__image_config__set(
-+          a_dst,
-+          self->private_impl.f_pixfmt,
-+          0u,
-+          self->private_impl.f_width,
-+          self->private_impl.f_height,
-+          self->private_impl.f_frame_config_io_position,
-+          false);
-     }
--    iop_a_src += self->private_data.s_do_decode_image_config[0].scratch;
-+    self->private_impl.f_call_sequence = 32u;
-+
-+    ok:
-+    self->private_impl.p_do_decode_image_config = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_image_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func webp.decoder.do_decode_image_config_limited
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__do_decode_image_config_limited(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint32_t v_c32 = 0;
-+  uint64_t v_r_mark = 0;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config_limited;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-     {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
--      uint32_t t_6;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--        t_6 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--        iop_a_src += 2;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      uint32_t t_0;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-       } else {
--        self->private_data.s_do_decode_image_config[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
-+        self->private_data.s_do_decode_image_config_limited.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-         while (true) {
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--          uint32_t num_bits_6 = ((uint32_t)(*scratch >> 56));
-+          uint64_t* scratch = &self->private_data.s_do_decode_image_config_limited.scratch;
-+          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
-           *scratch <<= 8;
-           *scratch >>= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_6;
--          if (num_bits_6 == 8) {
--            t_6 = ((uint32_t)(*scratch));
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
-+          if (num_bits_0 == 24) {
-+            t_0 = ((uint32_t)(*scratch));
-             break;
-           }
--          num_bits_6 += 8u;
--          *scratch |= ((uint64_t)(num_bits_6)) << 56;
-+          num_bits_0 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_0)) << 56;
-         }
-       }
--      self->private_impl.f_width = t_6;
-+      v_c32 = t_0;
-+    }
-+    if (v_c32 != 1346520407u) {
-+      status = wuffs_base__make_status(wuffs_webp__error__bad_header);
-+      goto exit;
-     }
-     {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
--      uint32_t t_7;
--      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--        t_7 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--        iop_a_src += 2;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+      uint32_t t_1;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-       } else {
--        self->private_data.s_do_decode_image_config[0].scratch = 0;
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
-+        self->private_data.s_do_decode_image_config_limited.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-         while (true) {
-           if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-             status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-             goto suspend;
-           }
--          uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--          uint32_t num_bits_7 = ((uint32_t)(*scratch >> 56));
-+          uint64_t* scratch = &self->private_data.s_do_decode_image_config_limited.scratch;
-+          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
-           *scratch <<= 8;
-           *scratch >>= 8;
--          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_7;
--          if (num_bits_7 == 8) {
--            t_7 = ((uint32_t)(*scratch));
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
-+          if (num_bits_1 == 24) {
-+            t_1 = ((uint32_t)(*scratch));
-             break;
-           }
--          num_bits_7 += 8u;
--          *scratch |= ((uint64_t)(num_bits_7)) << 56;
-+          num_bits_1 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_1)) << 56;
-         }
-       }
--      self->private_impl.f_height = t_7;
--    }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_8 = *iop_a_src++;
--      self->private_impl.f_header_pixel_depth = t_8;
-+      v_c32 = t_1;
-     }
--    if ((self->private_impl.f_header_pixel_depth != 1u) &&
--        (self->private_impl.f_header_pixel_depth != 8u) &&
--        (self->private_impl.f_header_pixel_depth != 15u) &&
--        (self->private_impl.f_header_pixel_depth != 16u) &&
--        (self->private_impl.f_header_pixel_depth != 24u) &&
--        (self->private_impl.f_header_pixel_depth != 32u)) {
--      status = wuffs_base__make_status(wuffs_tga__error__bad_header);
-+    if (v_c32 == 540561494u) {
-+      status = wuffs_base__make_status(wuffs_webp__error__unsupported_webp_file);
-       goto exit;
--    }
--    if ((self->private_impl.f_header_image_type | 8u) == 9u) {
--      self->private_impl.f_scratch_bytes_per_pixel = 1u;
--      self->private_impl.f_src_bytes_per_pixel = 1u;
--      self->private_impl.f_src_pixfmt = 2164523016u;
--      self->private_impl.f_opaque = ((self->private_impl.f_header_color_map_entry_size == 15u) || (self->private_impl.f_header_color_map_entry_size == 24u));
--    } else if ((self->private_impl.f_header_image_type | 8u) == 10u) {
--      if ((self->private_impl.f_header_pixel_depth == 15u) || (self->private_impl.f_header_pixel_depth == 16u)) {
--        self->private_impl.f_scratch_bytes_per_pixel = 4u;
--        self->private_impl.f_src_bytes_per_pixel = 0u;
--        self->private_impl.f_src_pixfmt = 2164295816u;
--      } else if (self->private_impl.f_header_pixel_depth == 24u) {
--        self->private_impl.f_scratch_bytes_per_pixel = 3u;
--        self->private_impl.f_src_bytes_per_pixel = 3u;
--        self->private_impl.f_src_pixfmt = 2147485832u;
--        self->private_impl.f_opaque = true;
--      } else if (self->private_impl.f_header_pixel_depth == 32u) {
--        self->private_impl.f_scratch_bytes_per_pixel = 4u;
--        self->private_impl.f_src_bytes_per_pixel = 4u;
--        self->private_impl.f_src_pixfmt = 2164295816u;
--      } else {
--        status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file);
--        goto exit;
-+    } else if (v_c32 == 1278758998u) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+        uint32_t t_2;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+          t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+          iop_a_src += 4;
-+        } else {
-+          self->private_data.s_do_decode_image_config_limited.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_decode_image_config_limited.scratch;
-+            uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
-+            if (num_bits_2 == 24) {
-+              t_2 = ((uint32_t)(*scratch));
-+              break;
-+            }
-+            num_bits_2 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_2)) << 56;
-+          }
-+        }
-+        self->private_impl.f_sub_chunk_length = t_2;
-       }
--    } else {
--      if (self->private_impl.f_header_pixel_depth == 8u) {
--        self->private_impl.f_scratch_bytes_per_pixel = 1u;
--        self->private_impl.f_src_bytes_per_pixel = 1u;
--        self->private_impl.f_src_pixfmt = 536870920u;
--        self->private_impl.f_opaque = true;
--      } else {
--        status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file);
-+      if (self->private_impl.f_sub_chunk_length < 4u) {
-+        status = wuffs_base__make_status(wuffs_webp__error__bad_header);
-         goto exit;
-       }
--    }
--    {
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
--      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--        goto suspend;
--      }
--      uint8_t t_9 = *iop_a_src++;
--      self->private_impl.f_header_image_descriptor = t_9;
--    }
--    if ((self->private_impl.f_header_image_descriptor & 16u) != 0u) {
--      status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file);
--      goto exit;
--    }
--    self->private_data.s_do_decode_image_config[0].scratch = ((uint32_t)(self->private_impl.f_header_id_length));
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
--    if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--      self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--      iop_a_src = io2_a_src;
--      status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--      goto suspend;
--    }
--    iop_a_src += self->private_data.s_do_decode_image_config[0].scratch;
--    if (self->private_impl.f_header_color_map_type != 0u) {
--      while (v_i < ((uint32_t)(self->private_impl.f_header_color_map_length))) {
--        if (self->private_impl.f_header_color_map_entry_size == 24u) {
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(17);
--            uint32_t t_10;
--            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
--              t_10 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
--              iop_a_src += 3;
--            } else {
--              self->private_data.s_do_decode_image_config[0].scratch = 0;
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(18);
--              while (true) {
--                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                  goto suspend;
--                }
--                uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--                uint32_t num_bits_10 = ((uint32_t)(*scratch >> 56));
--                *scratch <<= 8;
--                *scratch >>= 8;
--                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_10;
--                if (num_bits_10 == 16) {
--                  t_10 = ((uint32_t)(*scratch));
--                  break;
--                }
--                num_bits_10 += 8u;
--                *scratch |= ((uint64_t)(num_bits_10)) << 56;
--              }
--            }
--            v_c = t_10;
-+      self->private_impl.f_sub_chunk_has_padding = ((self->private_impl.f_sub_chunk_length & 1u) != 0u);
-+      while (true) {
-+        {
-+          const bool o_0_closed_a_src = a_src->meta.closed;
-+          const uint8_t* o_0_io2_a_src = io2_a_src;
-+          wuffs_private_impl__io_reader__limit(&io2_a_src, iop_a_src,
-+              ((uint64_t)(self->private_impl.f_sub_chunk_length)));
-+          if (a_src) {
-+            size_t n = ((size_t)(io2_a_src - a_src->data.ptr));
-+            a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n);
-+            a_src->meta.wi = n;
-           }
--          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 0u)] = ((uint8_t)((v_c >> 0u)));
--          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 1u)] = ((uint8_t)((v_c >> 8u)));
--          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 2u)] = ((uint8_t)((v_c >> 16u)));
--          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 3u)] = 255u;
--        } else if (self->private_impl.f_header_color_map_entry_size == 32u) {
-+          v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
-           {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(19);
--            uint32_t t_11;
--            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
--              t_11 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
--              iop_a_src += 4;
--            } else {
--              self->private_data.s_do_decode_image_config[0].scratch = 0;
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(20);
--              while (true) {
--                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                  goto suspend;
--                }
--                uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--                uint32_t num_bits_11 = ((uint32_t)(*scratch >> 56));
--                *scratch <<= 8;
--                *scratch >>= 8;
--                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_11;
--                if (num_bits_11 == 24) {
--                  t_11 = ((uint32_t)(*scratch));
--                  break;
--                }
--                num_bits_11 += 8u;
--                *scratch |= ((uint64_t)(num_bits_11)) << 56;
--              }
-+            if (a_src) {
-+              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-             }
--            v_c = t_11;
--          }
--          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 0u)] = ((uint8_t)((v_c >> 0u)));
--          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 1u)] = ((uint8_t)((v_c >> 8u)));
--          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 2u)] = ((uint8_t)((v_c >> 16u)));
--          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 3u)] = ((uint8_t)((v_c >> 24u)));
--        } else {
--          {
--            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(21);
--            uint32_t t_12;
--            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
--              t_12 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--              iop_a_src += 2;
--            } else {
--              self->private_data.s_do_decode_image_config[0].scratch = 0;
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22);
--              while (true) {
--                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                  goto suspend;
--                }
--                uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch;
--                uint32_t num_bits_12 = ((uint32_t)(*scratch >> 56));
--                *scratch <<= 8;
--                *scratch >>= 8;
--                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_12;
--                if (num_bits_12 == 8) {
--                  t_12 = ((uint32_t)(*scratch));
--                  break;
--                }
--                num_bits_12 += 8u;
--                *scratch |= ((uint64_t)(num_bits_12)) << 56;
--              }
-+            wuffs_base__status t_3 = wuffs_webp__decoder__do_decode_image_config_limited_vp8l(self, a_src);
-+            v_status = t_3;
-+            if (a_src) {
-+              iop_a_src = a_src->data.ptr + a_src->meta.ri;
-             }
--            v_c = t_12;
-           }
--          v_c5 = (31u & (v_c >> 0u));
--          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 0u)] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
--          v_c5 = (31u & (v_c >> 5u));
--          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 1u)] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
--          v_c5 = (31u & (v_c >> 10u));
--          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 2u)] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
--          self->private_data.f_src_palette[(((v_i & 255u) * 4u) + 3u)] = 255u;
-+          wuffs_private_impl__u32__sat_sub_indirect(&self->private_impl.f_sub_chunk_length, ((uint32_t)(wuffs_private_impl__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))))));
-+          io2_a_src = o_0_io2_a_src;
-+          if (a_src) {
-+            a_src->meta.closed = o_0_closed_a_src;
-+            a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
-+          }
-+        }
-+        if (wuffs_base__status__is_ok(&v_status)) {
-+          break;
-+        } else if ( ! wuffs_base__status__is_suspension(&v_status)) {
-+          status = v_status;
-+          if (wuffs_base__status__is_error(&status)) {
-+            goto exit;
-+          } else if (wuffs_base__status__is_suspension(&status)) {
-+            status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+            goto exit;
-+          }
-+          goto ok;
-+        } else if ((v_status.repr == wuffs_base__suspension__short_read) && (self->private_impl.f_sub_chunk_length == 0u)) {
-+          status = wuffs_base__make_status(wuffs_webp__error__short_chunk);
-+          goto exit;
-         }
--        v_i += 1u;
-+        status = v_status;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
-       }
--      while (v_i < 256u) {
--        self->private_data.f_src_palette[((v_i * 4u) + 0u)] = 0u;
--        self->private_data.f_src_palette[((v_i * 4u) + 1u)] = 0u;
--        self->private_data.f_src_palette[((v_i * 4u) + 2u)] = 0u;
--        self->private_data.f_src_palette[((v_i * 4u) + 3u)] = 255u;
--        v_i += 1u;
-+    } else if (v_c32 == 1480085590u) {
-+      status = wuffs_base__make_status(wuffs_webp__error__unsupported_webp_file);
-+      goto exit;
-+    } else {
-+      status = wuffs_base__make_status(wuffs_webp__error__bad_header);
-+      goto exit;
-+    }
-+
-+    ok:
-+    self->private_impl.p_do_decode_image_config_limited = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_image_config_limited = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func webp.decoder.do_decode_image_config_limited_vp8l
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__do_decode_image_config_limited_vp8l(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint32_t v_c32 = 0;
-+  uint32_t v_transform_size = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config_limited_vp8l;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-       }
-+      uint32_t t_0 = *iop_a_src++;
-+      v_c32 = t_0;
-     }
--    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
--    if (a_dst != NULL) {
--      wuffs_base__image_config__set(
--          a_dst,
--          self->private_impl.f_src_pixfmt,
--          0u,
--          self->private_impl.f_width,
--          self->private_impl.f_height,
--          self->private_impl.f_frame_config_io_position,
--          self->private_impl.f_opaque);
-+    if (v_c32 != 47u) {
-+      status = wuffs_base__make_status(wuffs_webp__error__bad_header);
-+      goto exit;
-     }
--    self->private_impl.f_call_sequence = 32u;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+      uint32_t t_1;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_do_decode_image_config_limited_vp8l.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_do_decode_image_config_limited_vp8l.scratch;
-+          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
-+          *scratch <<= 8;
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
-+          if (num_bits_1 == 24) {
-+            t_1 = ((uint32_t)(*scratch));
-+            break;
-+          }
-+          num_bits_1 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_1)) << 56;
-+        }
-+      }
-+      v_c32 = t_1;
-+    }
-+    self->private_impl.f_width = ((v_c32 & 16383u) + 1u);
-+    v_c32 >>= 14u;
-+    self->private_impl.f_height = ((v_c32 & 16383u) + 1u);
-+    v_c32 >>= 14u;
-+    self->private_impl.f_pixfmt = 2415954056u;
-+    if ((v_c32 & 1u) != 0u) {
-+      self->private_impl.f_pixfmt = 2164295816u;
-+    }
-+    v_c32 >>= 1u;
-+    if (v_c32 != 0u) {
-+      status = wuffs_base__make_status(wuffs_webp__error__bad_header);
-+      goto exit;
-+    }
-+    v_transform_size = (4u * ((self->private_impl.f_width + 3u) >> 2u) * ((self->private_impl.f_height + 3u) >> 2u));
-+    self->private_impl.f_workbuf_offset_for_transform[0u] = ((4u * self->private_impl.f_width * self->private_impl.f_height) + (0u * v_transform_size));
-+    self->private_impl.f_workbuf_offset_for_transform[1u] = ((4u * self->private_impl.f_width * self->private_impl.f_height) + (1u * v_transform_size));
-+    self->private_impl.f_workbuf_offset_for_transform[2u] = ((4u * self->private_impl.f_width * self->private_impl.f_height) + (2u * v_transform_size));
-+    self->private_impl.f_workbuf_offset_for_transform[3u] = ((4u * self->private_impl.f_width * self->private_impl.f_height) + (3u * v_transform_size));
- 
-     goto ok;
-     ok:
--    self->private_impl.p_do_decode_image_config[0] = 0;
-+    self->private_impl.p_do_decode_image_config_limited_vp8l = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_do_decode_image_config[0].v_i = v_i;
-+  self->private_impl.p_do_decode_image_config_limited_vp8l = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
-   goto exit;
-   exit:
-@@ -59702,12 +74199,12 @@ wuffs_tga__decoder__do_decode_image_config(
-   return status;
- }
- 
--// -------- func tga.decoder.decode_frame_config
-+// -------- func webp.decoder.decode_frame_config
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_tga__decoder__decode_frame_config(
--    wuffs_tga__decoder* self,
-+wuffs_webp__decoder__decode_frame_config(
-+    wuffs_webp__decoder* self,
-     wuffs_base__frame_config* a_dst,
-     wuffs_base__io_buffer* a_src) {
-   if (!self) {
-@@ -59733,17 +74230,17 @@ wuffs_tga__decoder__decode_frame_config(
- 
-   wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
-     while (true) {
-       {
--        wuffs_base__status t_0 = wuffs_tga__decoder__do_decode_frame_config(self, a_dst, a_src);
-+        wuffs_base__status t_0 = wuffs_webp__decoder__do_decode_frame_config(self, a_dst, a_src);
-         v_status = t_0;
-       }
-       if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_tga__error__truncated_input);
-+        status = wuffs_base__make_status(wuffs_webp__error__truncated_input);
-         goto exit;
-       }
-       status = v_status;
-@@ -59751,13 +74248,13 @@ wuffs_tga__decoder__decode_frame_config(
-     }
- 
-     ok:
--    self->private_impl.p_decode_frame_config[0] = 0;
-+    self->private_impl.p_decode_frame_config = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.p_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-   self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
- 
-   goto exit;
-@@ -59768,12 +74265,12 @@ wuffs_tga__decoder__decode_frame_config(
-   return status;
- }
- 
--// -------- func tga.decoder.do_decode_frame_config
-+// -------- func webp.decoder.do_decode_frame_config
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_tga__decoder__do_decode_frame_config(
--    wuffs_tga__decoder* self,
-+wuffs_webp__decoder__do_decode_frame_config(
-+    wuffs_webp__decoder* self,
-     wuffs_base__frame_config* a_dst,
-     wuffs_base__io_buffer* a_src) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
-@@ -59789,7 +74286,7 @@ wuffs_tga__decoder__do_decode_frame_config(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0];
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
-@@ -59799,7 +74296,7 @@ wuffs_tga__decoder__do_decode_frame_config(
-         a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-       }
-       WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      status = wuffs_tga__decoder__do_decode_image_config(self, NULL, a_src);
-+      status = wuffs_webp__decoder__do_decode_image_config(self, NULL, a_src);
-       if (a_src) {
-         iop_a_src = a_src->data.ptr + a_src->meta.ri;
-       }
-@@ -59831,20 +74328,20 @@ wuffs_tga__decoder__do_decode_frame_config(
-           0u,
-           self->private_impl.f_frame_config_io_position,
-           0u,
--          self->private_impl.f_opaque,
-           false,
--          4278190080u);
-+          false,
-+          0u);
-     }
-     self->private_impl.f_call_sequence = 64u;
- 
-     ok:
--    self->private_impl.p_do_decode_frame_config[0] = 0;
-+    self->private_impl.p_do_decode_frame_config = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.p_do_decode_frame_config = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
-   goto exit;
-   exit:
-@@ -59855,12 +74352,12 @@ wuffs_tga__decoder__do_decode_frame_config(
-   return status;
- }
- 
--// -------- func tga.decoder.decode_frame
-+// -------- func webp.decoder.decode_frame
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_tga__decoder__decode_frame(
--    wuffs_tga__decoder* self,
-+wuffs_webp__decoder__decode_frame(
-+    wuffs_webp__decoder* self,
-     wuffs_base__pixel_buffer* a_dst,
-     wuffs_base__io_buffer* a_src,
-     wuffs_base__pixel_blend a_blend,
-@@ -59889,13 +74386,13 @@ wuffs_tga__decoder__decode_frame(
- 
-   wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--  uint32_t coro_susp_point = self->private_impl.p_decode_frame[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_frame;
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
-     while (true) {
-       {
--        wuffs_base__status t_0 = wuffs_tga__decoder__do_decode_frame(self,
-+        wuffs_base__status t_0 = wuffs_webp__decoder__do_decode_frame(self,
-             a_dst,
-             a_src,
-             a_blend,
-@@ -59904,64 +74401,627 @@ wuffs_tga__decoder__decode_frame(
-         v_status = t_0;
-       }
-       if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_tga__error__truncated_input);
-+        status = wuffs_base__make_status(wuffs_webp__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+
-+    ok:
-+    self->private_impl.p_decode_frame = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
-+
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  }
-+  return status;
-+}
-+
-+// -------- func webp.decoder.do_decode_frame
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__do_decode_frame(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__pixel_blend a_blend,
-+    wuffs_base__slice_u8 a_workbuf,
-+    wuffs_base__decode_frame_options* a_opts) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_c8 = 0;
-+  uint32_t v_has_more = 0;
-+  uint32_t v_width = 0;
-+  wuffs_base__slice_u8 v_dst = {0};
-+  wuffs_base__slice_u8 v_tile_data = {0};
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+  wuffs_base__slice_u8 v_pix = {0};
-+  uint32_t v_which = 0;
-+  uint32_t v_transform_type = 0;
-+  uint64_t v_ti = 0;
-+  uint64_t v_tj = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame;
-+  if (coro_susp_point) {
-+    v_width = self->private_data.s_do_decode_frame.v_width;
-+  }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_call_sequence == 64u) {
-+    } else if (self->private_impl.f_call_sequence < 64u) {
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      status = wuffs_webp__decoder__do_decode_frame_config(self, NULL, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+    } else {
-+      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      goto ok;
-+    }
-+    self->private_impl.f_seen_transform[0u] = false;
-+    self->private_impl.f_seen_transform[1u] = false;
-+    self->private_impl.f_seen_transform[2u] = false;
-+    self->private_impl.f_seen_transform[3u] = false;
-+    self->private_impl.f_n_transforms = 0u;
-+    while (true) {
-+      if (self->private_impl.f_n_bits < 1u) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_0 = *iop_a_src++;
-+          v_c8 = t_0;
-+        }
-+        self->private_impl.f_bits = ((uint32_t)(v_c8));
-+        self->private_impl.f_n_bits = 8u;
-+      }
-+      v_has_more = (self->private_impl.f_bits & 1u);
-+      self->private_impl.f_bits >>= 1u;
-+      self->private_impl.f_n_bits -= 1u;
-+      if (v_has_more == 0u) {
-+        break;
-+      }
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+      status = wuffs_webp__decoder__decode_transform(self, a_src, a_workbuf);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+    }
-+    v_width = self->private_impl.f_width;
-+    if (self->private_impl.f_seen_transform[3u]) {
-+      v_width = self->private_impl.f_color_indexing_width;
-+    }
-+    if (a_src) {
-+      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+    }
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+    status = wuffs_webp__decoder__decode_color_cache_parameters(self, a_src);
-+    if (a_src) {
-+      iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+    }
-+    if (status.repr) {
-+      goto suspend;
-+    }
-+    self->private_impl.f_overall_color_cache_bits = self->private_impl.f_color_cache_bits;
-+    if (a_src) {
-+      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+    }
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+    status = wuffs_webp__decoder__decode_hg_table(self, a_src, v_width, a_workbuf);
-+    if (a_src) {
-+      iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+    }
-+    if (status.repr) {
-+      goto suspend;
-+    }
-+    self->private_impl.f_color_cache_bits = self->private_impl.f_overall_color_cache_bits;
-+    if (a_src) {
-+      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+    }
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+    status = wuffs_webp__decoder__decode_huffman_groups(self, a_src, self->private_impl.f_overall_n_huffman_groups);
-+    if (a_src) {
-+      iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+    }
-+    if (status.repr) {
-+      goto suspend;
-+    }
-+    while (true) {
-+      if ((((uint64_t)(self->private_impl.f_workbuf_offset_for_color_indexing)) > ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u]))) ||
-+          (((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])) > ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u]))) ||
-+          (((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u])) > ((uint64_t)(a_workbuf.len))) ||
-+          (((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])) > ((uint64_t)(a_workbuf.len)))) {
-+        status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
-+        goto exit;
-+      }
-+      v_dst = wuffs_base__slice_u8__subslice_ij(a_workbuf,
-+          ((uint64_t)(self->private_impl.f_workbuf_offset_for_color_indexing)),
-+          ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])));
-+      v_tile_data = wuffs_base__slice_u8__subslice_ij(a_workbuf,
-+          ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])),
-+          ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u])));
-+      {
-+        if (a_src) {
-+          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+        }
-+        wuffs_base__status t_1 = wuffs_webp__decoder__decode_pixels(self,
-+            v_dst,
-+            a_src,
-+            v_width,
-+            self->private_impl.f_height,
-+            v_tile_data,
-+            self->private_impl.f_overall_tile_size_log2);
-+        v_status = t_1;
-+        if (a_src) {
-+          iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+        }
-+      }
-+      if (wuffs_base__status__is_ok(&v_status)) {
-+        break;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
-+    }
-+    if (((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])) > ((uint64_t)(a_workbuf.len))) {
-+      status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
-+      goto exit;
-+    }
-+    v_pix = wuffs_base__slice_u8__subslice_j(a_workbuf, ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])));
-+    v_which = self->private_impl.f_n_transforms;
-+    while (v_which > 0u) {
-+      v_which -= 1u;
-+      v_transform_type = ((uint32_t)(self->private_impl.f_transform_type[v_which]));
-+      v_tile_data = wuffs_base__utility__empty_slice_u8();
-+      if (v_transform_type < 2u) {
-+        v_ti = ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[(v_transform_type + 1u)]));
-+        v_tj = ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[(v_transform_type + 2u)]));
-+        if ((v_ti <= v_tj) && (v_tj <= ((uint64_t)(a_workbuf.len)))) {
-+          v_tile_data = wuffs_base__slice_u8__subslice_ij(a_workbuf, v_ti, v_tj);
-+        }
-+      }
-+      if (v_transform_type == 0u) {
-+        wuffs_webp__decoder__apply_transform_predictor(self, v_pix, v_tile_data);
-+      } else if (v_transform_type == 1u) {
-+        wuffs_webp__decoder__apply_transform_cross_color(self, v_pix, v_tile_data);
-+      } else if (v_transform_type == 2u) {
-+        wuffs_webp__decoder__apply_transform_subtract_green(self, v_pix);
-+      } else {
-+        wuffs_webp__decoder__apply_transform_color_indexing(self, v_pix);
-+        v_width = self->private_impl.f_width;
-+      }
-+    }
-+    v_status = wuffs_webp__decoder__swizzle(self, a_dst, v_pix, a_blend);
-+    if ( ! wuffs_base__status__is_ok(&v_status)) {
-+      status = v_status;
-+      if (wuffs_base__status__is_error(&status)) {
-+        goto exit;
-+      } else if (wuffs_base__status__is_suspension(&status)) {
-+        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+        goto exit;
-+      }
-+      goto ok;
-+    }
-+    self->private_impl.f_call_sequence = 96u;
-+
-+    ok:
-+    self->private_impl.p_do_decode_frame = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_decode_frame = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_do_decode_frame.v_width = v_width;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func webp.decoder.decode_transform
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__decode_transform(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+  uint8_t v_c8 = 0;
-+  uint32_t v_transform_type = 0;
-+  uint32_t v_tile_size_log2 = 0;
-+  wuffs_base__slice_u8 v_p = {0};
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_transform;
-+  if (coro_susp_point) {
-+    v_transform_type = self->private_data.s_decode_transform.v_transform_type;
-+    v_tile_size_log2 = self->private_data.s_decode_transform.v_tile_size_log2;
-+  }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_n_bits < 2u) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_0 = *iop_a_src++;
-+        v_c8 = t_0;
-+      }
-+      if (self->private_impl.f_n_bits >= 2u) {
-+        status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
-+        goto exit;
-+      }
-+      self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
-+      self->private_impl.f_n_bits += 8u;
-+    }
-+    v_transform_type = (self->private_impl.f_bits & 3u);
-+    self->private_impl.f_bits >>= 2u;
-+    self->private_impl.f_n_bits -= 2u;
-+    if (self->private_impl.f_seen_transform[v_transform_type] || (self->private_impl.f_n_transforms >= 4u)) {
-+      status = wuffs_base__make_status(wuffs_webp__error__bad_transform);
-+      goto exit;
-+    } else if (self->private_impl.f_seen_transform[3u]) {
-+      status = wuffs_base__make_status(wuffs_webp__error__unsupported_transform_after_color_indexing_transform);
-+      goto exit;
-+    }
-+    self->private_impl.f_seen_transform[v_transform_type] = true;
-+    self->private_impl.f_transform_type[self->private_impl.f_n_transforms] = ((uint8_t)(v_transform_type));
-+    self->private_impl.f_n_transforms += 1u;
-+    if (v_transform_type < 2u) {
-+      if (self->private_impl.f_n_bits < 3u) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_1 = *iop_a_src++;
-+          v_c8 = t_1;
-+        }
-+        if (self->private_impl.f_n_bits >= 3u) {
-+          status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
-+          goto exit;
-+        }
-+        self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
-+        self->private_impl.f_n_bits += 8u;
-+      }
-+      v_tile_size_log2 = ((self->private_impl.f_bits & 7u) + 2u);
-+      self->private_impl.f_transform_tile_size_log2[v_transform_type] = ((uint8_t)(v_tile_size_log2));
-+      self->private_impl.f_bits >>= 3u;
-+      self->private_impl.f_n_bits -= 3u;
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+      status = wuffs_webp__decoder__decode_color_cache_parameters(self, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+      status = wuffs_webp__decoder__decode_huffman_groups(self, a_src, 1u);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+      while (true) {
-+        if ((((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[(v_transform_type + 1u)])) > ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[(v_transform_type + 2u)]))) || (((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[(v_transform_type + 2u)])) > ((uint64_t)(a_workbuf.len)))) {
-+          status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
-+          goto exit;
-+        }
-+        {
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          wuffs_base__status t_2 = wuffs_webp__decoder__decode_pixels(self,
-+              wuffs_base__slice_u8__subslice_ij(a_workbuf,
-+              ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[(v_transform_type + 1u)])),
-+              ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[(v_transform_type + 2u)]))),
-+              a_src,
-+              ((self->private_impl.f_width + ((((uint32_t)(1u)) << v_tile_size_log2) - 1u)) >> v_tile_size_log2),
-+              ((self->private_impl.f_height + ((((uint32_t)(1u)) << v_tile_size_log2) - 1u)) >> v_tile_size_log2),
-+              wuffs_base__utility__empty_slice_u8(),
-+              0u);
-+          v_status = t_2;
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+        }
-+        if (wuffs_base__status__is_ok(&v_status)) {
-+          break;
-+        }
-+        status = v_status;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
-+      }
-+    } else if (v_transform_type == 2u) {
-+    } else {
-+      if (self->private_impl.f_n_bits < 8u) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_3 = *iop_a_src++;
-+          v_c8 = t_3;
-+        }
-+        if (self->private_impl.f_n_bits >= 8u) {
-+          status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
-+          goto exit;
-+        }
-+        self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
-+        self->private_impl.f_n_bits += 8u;
-+      }
-+      self->private_impl.f_color_indexing_palette_size = ((self->private_impl.f_bits & 255u) + 1u);
-+      self->private_impl.f_bits >>= 8u;
-+      self->private_impl.f_n_bits -= 8u;
-+      if (self->private_impl.f_color_indexing_palette_size <= 2u) {
-+        self->private_impl.f_color_indexing_width = ((self->private_impl.f_width + 7u) / 8u);
-+        self->private_impl.f_transform_tile_size_log2[3u] = 3u;
-+      } else if (self->private_impl.f_color_indexing_palette_size <= 4u) {
-+        self->private_impl.f_color_indexing_width = ((self->private_impl.f_width + 3u) / 4u);
-+        self->private_impl.f_transform_tile_size_log2[3u] = 2u;
-+      } else if (self->private_impl.f_color_indexing_palette_size <= 16u) {
-+        self->private_impl.f_color_indexing_width = ((self->private_impl.f_width + 1u) / 2u);
-+        self->private_impl.f_transform_tile_size_log2[3u] = 1u;
-+      } else {
-+        self->private_impl.f_color_indexing_width = self->private_impl.f_width;
-+        self->private_impl.f_transform_tile_size_log2[3u] = 0u;
-+      }
-+      if (self->private_impl.f_width >= self->private_impl.f_color_indexing_width) {
-+        self->private_impl.f_workbuf_offset_for_color_indexing = (4u * (self->private_impl.f_width - self->private_impl.f_color_indexing_width) * self->private_impl.f_height);
-+      }
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+      status = wuffs_webp__decoder__decode_color_cache_parameters(self, a_src);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+      status = wuffs_webp__decoder__decode_huffman_groups(self, a_src, 1u);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+      if (a_src) {
-+        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+      }
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+      status = wuffs_webp__decoder__decode_pixels(self,
-+          wuffs_base__make_slice_u8(self->private_data.f_palette, (4u * self->private_impl.f_color_indexing_palette_size)),
-+          a_src,
-+          self->private_impl.f_color_indexing_palette_size,
-+          1u,
-+          wuffs_base__utility__empty_slice_u8(),
-+          0u);
-+      if (a_src) {
-+        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      }
-+      if (status.repr) {
-+        goto suspend;
-+      }
-+      wuffs_private_impl__bulk_memset(&self->private_data.f_palette[(4u * self->private_impl.f_color_indexing_palette_size)], (1024u - (4u * self->private_impl.f_color_indexing_palette_size)), 0u);
-+      v_p = wuffs_base__make_slice_u8(self->private_data.f_palette, (4u * self->private_impl.f_color_indexing_palette_size));
-+      while (((uint64_t)(v_p.len)) >= 8u) {
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        v_p.ptr[4u] += v_p.ptr[0u];
-+        v_p.ptr[5u] += v_p.ptr[1u];
-+        v_p.ptr[6u] += v_p.ptr[2u];
-+        v_p.ptr[7u] += v_p.ptr[3u];
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+        v_p = wuffs_base__slice_u8__subslice_i(v_p, 4u);
-+      }
-+    }
-+
-+    ok:
-+    self->private_impl.p_decode_transform = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_transform = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_transform.v_transform_type = v_transform_type;
-+  self->private_data.s_decode_transform.v_tile_size_log2 = v_tile_size_log2;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
-+
-+  return status;
-+}
-+
-+// -------- func webp.decoder.decode_color_cache_parameters
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__decode_color_cache_parameters(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint8_t v_c8 = 0;
-+  uint32_t v_use_color_cache = 0;
-+  uint32_t v_color_cache_bits = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_color_cache_parameters;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    if (self->private_impl.f_n_bits < 1u) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_0 = *iop_a_src++;
-+        v_c8 = t_0;
-+      }
-+      self->private_impl.f_bits = ((uint32_t)(v_c8));
-+      self->private_impl.f_n_bits = 8u;
-+    }
-+    v_use_color_cache = (self->private_impl.f_bits & 1u);
-+    self->private_impl.f_bits >>= 1u;
-+    self->private_impl.f_n_bits -= 1u;
-+    self->private_impl.f_color_cache_bits = 0u;
-+    if (v_use_color_cache != 0u) {
-+      if (self->private_impl.f_n_bits < 4u) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_1 = *iop_a_src++;
-+          v_c8 = t_1;
-+        }
-+        if (self->private_impl.f_n_bits >= 4u) {
-+          status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
-+          goto exit;
-+        }
-+        self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
-+        self->private_impl.f_n_bits += 8u;
-+      }
-+      v_color_cache_bits = (self->private_impl.f_bits & 15u);
-+      self->private_impl.f_bits >>= 4u;
-+      self->private_impl.f_n_bits -= 4u;
-+      if ((v_color_cache_bits < 1u) || (11u < v_color_cache_bits)) {
-+        status = wuffs_base__make_status(wuffs_webp__error__bad_color_cache);
-         goto exit;
-       }
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+      self->private_impl.f_color_cache_bits = v_color_cache_bits;
-     }
- 
-+    goto ok;
-     ok:
--    self->private_impl.p_decode_frame[0] = 0;
-+    self->private_impl.p_decode_color_cache_parameters = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
-+  self->private_impl.p_decode_color_cache_parameters = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
-   goto exit;
-   exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
-+
-   return status;
- }
- 
--// -------- func tga.decoder.do_decode_frame
-+// -------- func webp.decoder.decode_hg_table
- 
- WUFFS_BASE__GENERATED_C_CODE
- static wuffs_base__status
--wuffs_tga__decoder__do_decode_frame(
--    wuffs_tga__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
-+wuffs_webp__decoder__decode_hg_table(
-+    wuffs_webp__decoder* self,
-     wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts) {
-+    uint32_t a_width,
-+    wuffs_base__slice_u8 a_workbuf) {
-   wuffs_base__status status = wuffs_base__make_status(NULL);
- 
-   wuffs_base__status v_status = wuffs_base__make_status(NULL);
--  wuffs_base__pixel_format v_dst_pixfmt = {0};
--  uint32_t v_dst_bits_per_pixel = 0;
--  uint64_t v_dst_bytes_per_pixel = 0;
--  uint32_t v_dst_x = 0;
--  uint32_t v_dst_y = 0;
--  wuffs_base__table_u8 v_tab = {0};
--  wuffs_base__slice_u8 v_dst_palette = {0};
--  wuffs_base__slice_u8 v_dst = {0};
--  uint64_t v_dst_start = 0;
--  wuffs_base__slice_u8 v_src_palette = {0};
--  uint64_t v_mark = 0;
--  uint64_t v_num_pixels64 = 0;
--  uint32_t v_num_pixels32 = 0;
--  uint32_t v_lit_length = 0;
--  uint32_t v_run_length = 0;
--  uint64_t v_num_dst_bytes = 0;
--  uint32_t v_num_src_bytes = 0;
--  uint32_t v_c = 0;
--  uint32_t v_c5 = 0;
-+  uint8_t v_c8 = 0;
-+  uint32_t v_use_hg_table = 0;
-+  uint32_t v_tile_size_log2 = 0;
-+  wuffs_base__slice_u8 v_hg_pixels = {0};
-+  uint64_t v_n = 0;
-+  wuffs_base__slice_u8 v_p = {0};
-+  uint32_t v_hg_plus_1 = 0;
- 
-   const uint8_t* iop_a_src = NULL;
-   const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-@@ -59974,276 +75034,155 @@ wuffs_tga__decoder__do_decode_frame(
-     io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0];
-+  uint32_t coro_susp_point = self->private_impl.p_decode_hg_table;
-   if (coro_susp_point) {
--    v_dst_bytes_per_pixel = self->private_data.s_do_decode_frame[0].v_dst_bytes_per_pixel;
--    v_dst_x = self->private_data.s_do_decode_frame[0].v_dst_x;
--    v_dst_y = self->private_data.s_do_decode_frame[0].v_dst_y;
--    v_mark = self->private_data.s_do_decode_frame[0].v_mark;
--    v_num_pixels32 = self->private_data.s_do_decode_frame[0].v_num_pixels32;
--    v_lit_length = self->private_data.s_do_decode_frame[0].v_lit_length;
--    v_run_length = self->private_data.s_do_decode_frame[0].v_run_length;
--    v_num_dst_bytes = self->private_data.s_do_decode_frame[0].v_num_dst_bytes;
-+    v_tile_size_log2 = self->private_data.s_decode_hg_table.v_tile_size_log2;
-   }
-   switch (coro_susp_point) {
-     WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--    if (self->private_impl.f_call_sequence == 64u) {
--    } else if (self->private_impl.f_call_sequence < 64u) {
--      if (a_src) {
--        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+    if (self->private_impl.f_n_bits < 1u) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_0 = *iop_a_src++;
-+        v_c8 = t_0;
-       }
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      status = wuffs_tga__decoder__do_decode_frame_config(self, NULL, a_src);
--      if (a_src) {
--        iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+      self->private_impl.f_bits = ((uint32_t)(v_c8));
-+      self->private_impl.f_n_bits = 8u;
-+    }
-+    v_use_hg_table = (self->private_impl.f_bits & 1u);
-+    self->private_impl.f_bits >>= 1u;
-+    self->private_impl.f_n_bits -= 1u;
-+    if (v_use_hg_table == 0u) {
-+      self->private_impl.f_overall_n_huffman_groups = 1u;
-+      self->private_impl.f_overall_tile_size_log2 = 0u;
-+      if ((((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])) > ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u]))) || (((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u])) > ((uint64_t)(a_workbuf.len)))) {
-+        status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
-+        goto exit;
-       }
--      if (status.repr) {
--        goto suspend;
-+      v_hg_pixels = wuffs_base__slice_u8__subslice_ij(a_workbuf,
-+          ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])),
-+          ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u])));
-+      if (((uint64_t)(v_hg_pixels.len)) >= 4u) {
-+        v_hg_pixels.ptr[0u] = 0u;
-+        v_hg_pixels.ptr[1u] = 0u;
-+        v_hg_pixels.ptr[2u] = 0u;
-+        v_hg_pixels.ptr[3u] = 0u;
-       }
--    } else {
--      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
-+      status = wuffs_base__make_status(NULL);
-       goto ok;
-     }
--    if (self->private_impl.f_header_color_map_type != 0u) {
--      v_src_palette = wuffs_base__make_slice_u8(self->private_data.f_src_palette, 1024);
--    }
--    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
--        wuffs_base__pixel_buffer__pixel_format(a_dst),
--        wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
--        wuffs_base__utility__make_pixel_format(self->private_impl.f_src_pixfmt),
--        v_src_palette,
--        a_blend);
--    if ( ! wuffs_base__status__is_ok(&v_status)) {
--      status = v_status;
--      if (wuffs_base__status__is_error(&status)) {
--        goto exit;
--      } else if (wuffs_base__status__is_suspension(&status)) {
--        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
-+    if (self->private_impl.f_n_bits < 3u) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_1 = *iop_a_src++;
-+        v_c8 = t_1;
-+      }
-+      if (self->private_impl.f_n_bits >= 3u) {
-+        status = wuffs_base__make_status(wuffs_webp__error__internal_error_inconsistent_n_bits);
-         goto exit;
-       }
--      goto ok;
-+      self->private_impl.f_bits |= (((uint32_t)(v_c8)) << self->private_impl.f_n_bits);
-+      self->private_impl.f_n_bits += 8u;
-     }
--    v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
--    v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
--    if ((v_dst_bits_per_pixel & 7u) != 0u) {
--      status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
--      goto exit;
-+    v_tile_size_log2 = ((self->private_impl.f_bits & 7u) + 2u);
-+    self->private_impl.f_bits >>= 3u;
-+    self->private_impl.f_n_bits -= 3u;
-+    self->private_impl.f_overall_tile_size_log2 = v_tile_size_log2;
-+    if (a_src) {
-+      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-     }
--    v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8u)));
--    if ((self->private_impl.f_header_image_descriptor & 32u) == 0u) {
--      v_dst_y = ((uint32_t)(self->private_impl.f_height - 1u));
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+    status = wuffs_webp__decoder__decode_color_cache_parameters(self, a_src);
-+    if (a_src) {
-+      iop_a_src = a_src->data.ptr + a_src->meta.ri;
-     }
--    if ((self->private_impl.f_header_image_type & 8u) == 0u) {
--      v_lit_length = self->private_impl.f_width;
-+    if (status.repr) {
-+      goto suspend;
-+    }
-+    if (a_src) {
-+      a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+    }
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+    status = wuffs_webp__decoder__decode_huffman_groups(self, a_src, 1u);
-+    if (a_src) {
-+      iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+    }
-+    if (status.repr) {
-+      goto suspend;
-     }
--    label__resume__continue:;
-     while (true) {
--      v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
--      v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024));
--      while (v_dst_y < self->private_impl.f_height) {
--        v_dst = wuffs_base__table_u8__row_u32(v_tab, v_dst_y);
--        v_dst_start = (((uint64_t)(v_dst_x)) * v_dst_bytes_per_pixel);
--        if (v_dst_start <= ((uint64_t)(v_dst.len))) {
--          v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_start);
--        } else {
--          v_dst = wuffs_base__utility__empty_slice_u8();
--        }
--        while (v_dst_x < self->private_impl.f_width) {
--          if (self->private_impl.f_src_bytes_per_pixel > 0u) {
--            if (v_lit_length > 0u) {
--              v_mark = ((uint64_t)(iop_a_src - io0_a_src));
--              v_num_pixels64 = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(self->private_impl.f_src_bytes_per_pixel)));
--              v_num_pixels32 = ((uint32_t)(wuffs_base__u64__min(v_num_pixels64, ((uint64_t)(v_lit_length)))));
--              v_num_dst_bytes = (((uint64_t)(v_num_pixels32)) * v_dst_bytes_per_pixel);
--              v_num_src_bytes = (v_num_pixels32 * self->private_impl.f_src_bytes_per_pixel);
--              self->private_data.s_do_decode_frame[0].scratch = v_num_src_bytes;
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--              if (self->private_data.s_do_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
--                self->private_data.s_do_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
--                iop_a_src = io2_a_src;
--                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                goto suspend;
--              }
--              iop_a_src += self->private_data.s_do_decode_frame[0].scratch;
--              wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
--              if (v_num_dst_bytes <= ((uint64_t)(v_dst.len))) {
--                v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_num_dst_bytes);
--              } else {
--                v_dst = wuffs_base__utility__empty_slice_u8();
--              }
--              v_dst_x += v_num_pixels32;
--              v_lit_length = (((uint32_t)(v_lit_length - v_num_pixels32)) & 65535u);
--              if (v_lit_length > 0u) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
--                goto label__resume__continue;
--              }
--            } else if (v_run_length > 0u) {
--              v_run_length -= 1u;
--              wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, self->private_impl.f_scratch_bytes_per_pixel));
--              if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) {
--                v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel);
--              }
--              v_dst_x += 1u;
--            } else {
--              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
--                goto label__resume__continue;
--              }
--              if (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) < 128u) {
--                v_lit_length = (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) + 1u);
--                iop_a_src += 1u;
--                if ((v_lit_length + v_dst_x) > self->private_impl.f_width) {
--                  status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding);
--                  goto exit;
--                }
--              } else {
--                if (self->private_impl.f_src_bytes_per_pixel == 1u) {
--                  if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
--                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
--                    goto label__resume__continue;
--                  }
--                  v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127u) + 1u);
--                  iop_a_src += 1u;
--                  self->private_data.f_scratch[0u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--                  iop_a_src += 1u;
--                } else if (self->private_impl.f_src_bytes_per_pixel == 3u) {
--                  if (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
--                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
--                    goto label__resume__continue;
--                  }
--                  v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127u) + 1u);
--                  iop_a_src += 1u;
--                  self->private_data.f_scratch[0u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--                  iop_a_src += 1u;
--                  self->private_data.f_scratch[1u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--                  iop_a_src += 1u;
--                  self->private_data.f_scratch[2u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--                  iop_a_src += 1u;
--                } else {
--                  if (((uint64_t)(io2_a_src - iop_a_src)) < 5u) {
--                    status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
--                    goto label__resume__continue;
--                  }
--                  v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127u) + 1u);
--                  iop_a_src += 1u;
--                  self->private_data.f_scratch[0u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--                  iop_a_src += 1u;
--                  self->private_data.f_scratch[1u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--                  iop_a_src += 1u;
--                  self->private_data.f_scratch[2u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--                  iop_a_src += 1u;
--                  self->private_data.f_scratch[3u] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--                  iop_a_src += 1u;
--                }
--                if ((v_run_length + v_dst_x) > self->private_impl.f_width) {
--                  status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding);
--                  goto exit;
--                }
--              }
--            }
--          } else {
--            if (v_lit_length > 0u) {
--              if (((uint64_t)(io2_a_src - iop_a_src)) < 2u) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
--                goto label__resume__continue;
--              }
--              v_c = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--              iop_a_src += 2u;
--              v_c5 = (31u & (v_c >> 0u));
--              self->private_data.f_scratch[0u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
--              v_c5 = (31u & (v_c >> 5u));
--              self->private_data.f_scratch[1u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
--              v_c5 = (31u & (v_c >> 10u));
--              self->private_data.f_scratch[2u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
--              self->private_data.f_scratch[3u] = 255u;
--              wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, 4));
--              if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) {
--                v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel);
--              }
--              v_dst_x += 1u;
--              v_lit_length -= 1u;
--            } else if (v_run_length > 0u) {
--              v_run_length -= 1u;
--              wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, self->private_impl.f_scratch_bytes_per_pixel));
--              if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) {
--                v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel);
--              }
--              v_dst_x += 1u;
--            } else {
--              if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
--                goto label__resume__continue;
--              }
--              if (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) < 128u) {
--                v_lit_length = (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) + 1u);
--                iop_a_src += 1u;
--                if ((v_lit_length + v_dst_x) > self->private_impl.f_width) {
--                  status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding);
--                  goto exit;
--                }
--              } else {
--                if (((uint64_t)(io2_a_src - iop_a_src)) < 3u) {
--                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--                  WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
--                  goto label__resume__continue;
--                }
--                v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127u) + 1u);
--                iop_a_src += 1u;
--                v_c = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
--                iop_a_src += 2u;
--                v_c5 = (31u & (v_c >> 0u));
--                self->private_data.f_scratch[0u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
--                v_c5 = (31u & (v_c >> 5u));
--                self->private_data.f_scratch[1u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
--                v_c5 = (31u & (v_c >> 10u));
--                self->private_data.f_scratch[2u] = ((uint8_t)(((v_c5 << 3u) | (v_c5 >> 2u))));
--                self->private_data.f_scratch[3u] = 255u;
--                if ((v_run_length + v_dst_x) > self->private_impl.f_width) {
--                  status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding);
--                  goto exit;
--                }
--              }
--            }
--          }
--        }
--        v_dst_x = 0u;
--        if ((self->private_impl.f_header_image_descriptor & 32u) == 0u) {
--          v_dst_y -= 1u;
--        } else {
--          v_dst_y += 1u;
-+      if ((((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])) > ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u]))) || (((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u])) > ((uint64_t)(a_workbuf.len)))) {
-+        status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
-+        goto exit;
-+      }
-+      {
-+        if (a_src) {
-+          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-         }
--        if ((self->private_impl.f_header_image_type & 8u) == 0u) {
--          v_lit_length = self->private_impl.f_width;
-+        wuffs_base__status t_2 = wuffs_webp__decoder__decode_pixels(self,
-+            wuffs_base__slice_u8__subslice_ij(a_workbuf,
-+            ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])),
-+            ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u]))),
-+            a_src,
-+            ((a_width + ((((uint32_t)(1u)) << v_tile_size_log2) - 1u)) >> v_tile_size_log2),
-+            ((self->private_impl.f_height + ((((uint32_t)(1u)) << v_tile_size_log2) - 1u)) >> v_tile_size_log2),
-+            wuffs_base__utility__empty_slice_u8(),
-+            0u);
-+        v_status = t_2;
-+        if (a_src) {
-+          iop_a_src = a_src->data.ptr + a_src->meta.ri;
-         }
-       }
--      break;
-+      if (wuffs_base__status__is_ok(&v_status)) {
-+        break;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
-+    }
-+    self->private_impl.f_overall_n_huffman_groups = 1u;
-+    if ((((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])) > ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u]))) || (((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u])) > ((uint64_t)(a_workbuf.len)))) {
-+      status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
-+      goto exit;
-+    }
-+    v_hg_pixels = wuffs_base__slice_u8__subslice_ij(a_workbuf,
-+        ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[0u])),
-+        ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[1u])));
-+    v_n = ((uint64_t)((((a_width + ((((uint32_t)(1u)) << v_tile_size_log2) - 1u)) >> v_tile_size_log2) * ((self->private_impl.f_height + ((((uint32_t)(1u)) << v_tile_size_log2) - 1u)) >> v_tile_size_log2) * 4u)));
-+    if (v_n > ((uint64_t)(v_hg_pixels.len))) {
-+      status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
-+      goto exit;
-+    }
-+    v_p = wuffs_base__slice_u8__subslice_j(v_hg_pixels, v_n);
-+    while (((uint64_t)(v_p.len)) >= 4u) {
-+      if (v_p.ptr[2u] != 0u) {
-+        status = wuffs_base__make_status(wuffs_webp__error__unsupported_number_of_huffman_groups);
-+        goto exit;
-+      }
-+      v_hg_plus_1 = (((uint32_t)(v_p.ptr[1u])) + 1u);
-+      if (self->private_impl.f_overall_n_huffman_groups < v_hg_plus_1) {
-+        self->private_impl.f_overall_n_huffman_groups = v_hg_plus_1;
-+      }
-+      v_p = wuffs_base__slice_u8__subslice_i(v_p, 4u);
-     }
--    self->private_impl.f_call_sequence = 96u;
- 
-     ok:
--    self->private_impl.p_do_decode_frame[0] = 0;
-+    self->private_impl.p_decode_hg_table = 0;
-     goto exit;
-   }
- 
-   goto suspend;
-   suspend:
--  self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_do_decode_frame[0].v_dst_bytes_per_pixel = v_dst_bytes_per_pixel;
--  self->private_data.s_do_decode_frame[0].v_dst_x = v_dst_x;
--  self->private_data.s_do_decode_frame[0].v_dst_y = v_dst_y;
--  self->private_data.s_do_decode_frame[0].v_mark = v_mark;
--  self->private_data.s_do_decode_frame[0].v_num_pixels32 = v_num_pixels32;
--  self->private_data.s_do_decode_frame[0].v_lit_length = v_lit_length;
--  self->private_data.s_do_decode_frame[0].v_run_length = v_run_length;
--  self->private_data.s_do_decode_frame[0].v_num_dst_bytes = v_num_dst_bytes;
-+  self->private_impl.p_decode_hg_table = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_hg_table.v_tile_size_log2 = v_tile_size_log2;
- 
-   goto exit;
-   exit:
-@@ -60254,12 +75193,117 @@ wuffs_tga__decoder__do_decode_frame(
-   return status;
- }
- 
--// -------- func tga.decoder.frame_dirty_rect
-+// -------- func webp.decoder.decode_pixels
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__decode_pixels(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__slice_u8 a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    uint32_t a_width,
-+    uint32_t a_height,
-+    wuffs_base__slice_u8 a_tile_data,
-+    uint32_t a_tile_size_log2) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  uint32_t v_i = 0;
-+  uint32_t v_n = 0;
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_pixels;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    v_i = 0u;
-+    v_n = (((uint32_t)(1u)) << self->private_impl.f_color_cache_bits);
-+    while (v_i < v_n) {
-+      self->private_data.f_color_cache[v_i] = 0u;
-+      v_i += 1u;
-+    }
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+    status = wuffs_webp__decoder__decode_pixels_slow(self,
-+        a_dst,
-+        a_src,
-+        a_width,
-+        a_height,
-+        a_tile_data,
-+        a_tile_size_log2);
-+    if (status.repr) {
-+      goto suspend;
-+    }
-+
-+    goto ok;
-+    ok:
-+    self->private_impl.p_decode_pixels = 0;
-+    goto exit;
-+  }
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_pixels = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+
-+  goto exit;
-+  exit:
-+  return status;
-+}
-+
-+// -------- func webp.decoder.swizzle
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_webp__decoder__swizzle(
-+    wuffs_webp__decoder* self,
-+    wuffs_base__pixel_buffer* a_dst,
-+    wuffs_base__slice_u8 a_src,
-+    wuffs_base__pixel_blend a_blend) {
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+  wuffs_base__pixel_format v_dst_pixfmt = {0};
-+  uint32_t v_dst_bits_per_pixel = 0;
-+  uint32_t v_dst_bytes_per_pixel = 0;
-+  uint64_t v_dst_bytes_per_row = 0;
-+  wuffs_base__slice_u8 v_dst_palette = {0};
-+  wuffs_base__table_u8 v_tab = {0};
-+  uint64_t v_src_bytes_per_row = 0;
-+  wuffs_base__slice_u8 v_dst = {0};
-+  uint32_t v_y = 0;
-+
-+  v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
-+      wuffs_base__pixel_buffer__pixel_format(a_dst),
-+      wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_palette, 1024)),
-+      wuffs_base__utility__make_pixel_format(self->private_impl.f_pixfmt),
-+      wuffs_base__utility__empty_slice_u8(),
-+      a_blend);
-+  if ( ! wuffs_base__status__is_ok(&v_status)) {
-+    return wuffs_private_impl__status__ensure_not_a_suspension(v_status);
-+  }
-+  v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
-+  v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
-+  if ((v_dst_bits_per_pixel & 7u) != 0u) {
-+    return wuffs_base__make_status(wuffs_base__error__unsupported_option);
-+  }
-+  v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8u);
-+  v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel)));
-+  v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_palette, 1024));
-+  v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
-+  v_src_bytes_per_row = ((uint64_t)((self->private_impl.f_width * 4u)));
-+  while (v_src_bytes_per_row <= ((uint64_t)(a_src.len))) {
-+    v_dst = wuffs_private_impl__table_u8__row_u32(v_tab, v_y);
-+    if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
-+      v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
-+    }
-+    wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__slice_u8__subslice_j(a_src, v_src_bytes_per_row));
-+    a_src = wuffs_base__slice_u8__subslice_i(a_src, v_src_bytes_per_row);
-+    v_y += 1u;
-+  }
-+  return wuffs_base__make_status(NULL);
-+}
-+
-+// -------- func webp.decoder.frame_dirty_rect
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
--wuffs_tga__decoder__frame_dirty_rect(
--    const wuffs_tga__decoder* self) {
-+wuffs_webp__decoder__frame_dirty_rect(
-+    const wuffs_webp__decoder* self) {
-   if (!self) {
-     return wuffs_base__utility__empty_rect_ie_u32();
-   }
-@@ -60275,12 +75319,12 @@ wuffs_tga__decoder__frame_dirty_rect(
-       self->private_impl.f_height);
- }
- 
--// -------- func tga.decoder.num_animation_loops
-+// -------- func webp.decoder.num_animation_loops
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_tga__decoder__num_animation_loops(
--    const wuffs_tga__decoder* self) {
-+wuffs_webp__decoder__num_animation_loops(
-+    const wuffs_webp__decoder* self) {
-   if (!self) {
-     return 0;
-   }
-@@ -60292,12 +75336,12 @@ wuffs_tga__decoder__num_animation_loops(
-   return 0u;
- }
- 
--// -------- func tga.decoder.num_decoded_frame_configs
-+// -------- func webp.decoder.num_decoded_frame_configs
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_tga__decoder__num_decoded_frame_configs(
--    const wuffs_tga__decoder* self) {
-+wuffs_webp__decoder__num_decoded_frame_configs(
-+    const wuffs_webp__decoder* self) {
-   if (!self) {
-     return 0;
-   }
-@@ -60312,12 +75356,12 @@ wuffs_tga__decoder__num_decoded_frame_configs(
-   return 0u;
- }
- 
--// -------- func tga.decoder.num_decoded_frames
-+// -------- func webp.decoder.num_decoded_frames
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_tga__decoder__num_decoded_frames(
--    const wuffs_tga__decoder* self) {
-+wuffs_webp__decoder__num_decoded_frames(
-+    const wuffs_webp__decoder* self) {
-   if (!self) {
-     return 0;
-   }
-@@ -60332,12 +75376,12 @@ wuffs_tga__decoder__num_decoded_frames(
-   return 0u;
- }
- 
--// -------- func tga.decoder.restart_frame
-+// -------- func webp.decoder.restart_frame
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_tga__decoder__restart_frame(
--    wuffs_tga__decoder* self,
-+wuffs_webp__decoder__restart_frame(
-+    wuffs_webp__decoder* self,
-     uint64_t a_index,
-     uint64_t a_io_position) {
-   if (!self) {
-@@ -60353,31 +75397,30 @@ wuffs_tga__decoder__restart_frame(
-   if (self->private_impl.f_call_sequence < 32u) {
-     return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
-   }
--  if (a_index != 0u) {
-+  if ((a_index != 0u) || (a_io_position != self->private_impl.f_frame_config_io_position)) {
-     return wuffs_base__make_status(wuffs_base__error__bad_argument);
-   }
-   self->private_impl.f_call_sequence = 40u;
--  self->private_impl.f_frame_config_io_position = a_io_position;
-   return wuffs_base__make_status(NULL);
- }
- 
--// -------- func tga.decoder.set_report_metadata
-+// -------- func webp.decoder.set_report_metadata
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_tga__decoder__set_report_metadata(
--    wuffs_tga__decoder* self,
-+wuffs_webp__decoder__set_report_metadata(
-+    wuffs_webp__decoder* self,
-     uint32_t a_fourcc,
-     bool a_report) {
-   return wuffs_base__make_empty_struct();
- }
- 
--// -------- func tga.decoder.tell_me_more
-+// -------- func webp.decoder.tell_me_more
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_tga__decoder__tell_me_more(
--    wuffs_tga__decoder* self,
-+wuffs_webp__decoder__tell_me_more(
-+    wuffs_webp__decoder* self,
-     wuffs_base__io_buffer* a_dst,
-     wuffs_base__more_information* a_minfo,
-     wuffs_base__io_buffer* a_src) {
-@@ -60415,29 +75458,12 @@ wuffs_tga__decoder__tell_me_more(
-   return status;
- }
- 
--// -------- func tga.decoder.history_retain_length
--
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_tga__decoder__history_retain_length(
--    const wuffs_tga__decoder* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
--  }
--
--  return 0u;
--}
--
--// -------- func tga.decoder.workbuf_len
-+// -------- func webp.decoder.workbuf_len
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_tga__decoder__workbuf_len(
--    const wuffs_tga__decoder* self) {
-+wuffs_webp__decoder__workbuf_len(
-+    const wuffs_webp__decoder* self) {
-   if (!self) {
-     return wuffs_base__utility__empty_range_ii_u64();
-   }
-@@ -60446,92 +75472,66 @@ wuffs_tga__decoder__workbuf_len(
-     return wuffs_base__utility__empty_range_ii_u64();
-   }
- 
--  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
-+  return wuffs_base__utility__make_range_ii_u64(((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[3u])), ((uint64_t)(self->private_impl.f_workbuf_offset_for_transform[3u])));
- }
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA)
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WEBP)
- 
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP)
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH32)
- 
- // ---------------- Status Codes Implementations
- 
--const char wuffs_wbmp__error__bad_header[] = "#wbmp: bad header";
--const char wuffs_wbmp__error__truncated_input[] = "#wbmp: truncated input";
--
- // ---------------- Private Consts
- 
--// ---------------- Private Initializer Prototypes
-+#define WUFFS_XXHASH32__XXH_PRIME32_1 2654435761u
- 
--// ---------------- Private Function Prototypes
-+#define WUFFS_XXHASH32__XXH_PRIME32_2 2246822519u
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_wbmp__decoder__do_decode_image_config(
--    wuffs_wbmp__decoder* self,
--    wuffs_base__image_config* a_dst,
--    wuffs_base__io_buffer* a_src);
-+#define WUFFS_XXHASH32__XXH_PRIME32_3 3266489917u
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_wbmp__decoder__do_decode_frame_config(
--    wuffs_wbmp__decoder* self,
--    wuffs_base__frame_config* a_dst,
--    wuffs_base__io_buffer* a_src);
-+#define WUFFS_XXHASH32__XXH_PRIME32_4 668265263u
-+
-+#define WUFFS_XXHASH32__XXH_PRIME32_5 374761393u
-+
-+#define WUFFS_XXHASH32__INITIAL_V0 606290984u
-+
-+#define WUFFS_XXHASH32__INITIAL_V1 2246822519u
-+
-+#define WUFFS_XXHASH32__INITIAL_V2 0u
-+
-+#define WUFFS_XXHASH32__INITIAL_V3 1640531535u
-+
-+// ---------------- Private Initializer Prototypes
-+
-+// ---------------- Private Function Prototypes
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_wbmp__decoder__do_decode_frame(
--    wuffs_wbmp__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts);
-+static wuffs_base__empty_struct
-+wuffs_xxhash32__hasher__up(
-+    wuffs_xxhash32__hasher* self,
-+    wuffs_base__slice_u8 a_x);
- 
- // ---------------- VTables
- 
--const wuffs_base__image_decoder__func_ptrs
--wuffs_wbmp__decoder__func_ptrs_for__wuffs_base__image_decoder = {
--  (wuffs_base__status(*)(void*,
--      wuffs_base__pixel_buffer*,
--      wuffs_base__io_buffer*,
--      wuffs_base__pixel_blend,
--      wuffs_base__slice_u8,
--      wuffs_base__decode_frame_options*))(&wuffs_wbmp__decoder__decode_frame),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__frame_config*,
--      wuffs_base__io_buffer*))(&wuffs_wbmp__decoder__decode_frame_config),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__image_config*,
--      wuffs_base__io_buffer*))(&wuffs_wbmp__decoder__decode_image_config),
--  (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_wbmp__decoder__frame_dirty_rect),
-+const wuffs_base__hasher_u32__func_ptrs
-+wuffs_xxhash32__hasher__func_ptrs_for__wuffs_base__hasher_u32 = {
-+  (uint32_t(*)(const void*))(&wuffs_xxhash32__hasher__checksum_u32),
-   (uint64_t(*)(const void*,
--      uint32_t))(&wuffs_wbmp__decoder__get_quirk),
--  (uint64_t(*)(const void*))(&wuffs_wbmp__decoder__history_retain_length),
--  (uint32_t(*)(const void*))(&wuffs_wbmp__decoder__num_animation_loops),
--  (uint64_t(*)(const void*))(&wuffs_wbmp__decoder__num_decoded_frame_configs),
--  (uint64_t(*)(const void*))(&wuffs_wbmp__decoder__num_decoded_frames),
--  (wuffs_base__status(*)(void*,
--      uint64_t,
--      uint64_t))(&wuffs_wbmp__decoder__restart_frame),
-+      uint32_t))(&wuffs_xxhash32__hasher__get_quirk),
-   (wuffs_base__status(*)(void*,
-       uint32_t,
--      uint64_t))(&wuffs_wbmp__decoder__set_quirk),
-+      uint64_t))(&wuffs_xxhash32__hasher__set_quirk),
-   (wuffs_base__empty_struct(*)(void*,
--      uint32_t,
--      bool))(&wuffs_wbmp__decoder__set_report_metadata),
--  (wuffs_base__status(*)(void*,
--      wuffs_base__io_buffer*,
--      wuffs_base__more_information*,
--      wuffs_base__io_buffer*))(&wuffs_wbmp__decoder__tell_me_more),
--  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_wbmp__decoder__workbuf_len),
-+      wuffs_base__slice_u8))(&wuffs_xxhash32__hasher__update),
-+  (uint32_t(*)(void*,
-+      wuffs_base__slice_u8))(&wuffs_xxhash32__hasher__update_u32),
- };
- 
- // ---------------- Initializer Implementations
- 
- wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_wbmp__decoder__initialize(
--    wuffs_wbmp__decoder* self,
-+wuffs_xxhash32__hasher__initialize(
-+    wuffs_xxhash32__hasher* self,
-     size_t sizeof_star_self,
-     uint64_t wuffs_version,
-     uint32_t options){
-@@ -60569,22 +75569,22 @@ wuffs_wbmp__decoder__initialize(
-   }
- 
-   self->private_impl.magic = WUFFS_BASE__MAGIC;
--  self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
--      wuffs_base__image_decoder__vtable_name;
--  self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
--      (const void*)(&wuffs_wbmp__decoder__func_ptrs_for__wuffs_base__image_decoder);
-+  self->private_impl.vtable_for__wuffs_base__hasher_u32.vtable_name =
-+      wuffs_base__hasher_u32__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__hasher_u32.function_pointers =
-+      (const void*)(&wuffs_xxhash32__hasher__func_ptrs_for__wuffs_base__hasher_u32);
-   return wuffs_base__make_status(NULL);
- }
- 
--wuffs_wbmp__decoder*
--wuffs_wbmp__decoder__alloc(void) {
--  wuffs_wbmp__decoder* x =
--      (wuffs_wbmp__decoder*)(calloc(sizeof(wuffs_wbmp__decoder), 1));
-+wuffs_xxhash32__hasher*
-+wuffs_xxhash32__hasher__alloc(void) {
-+  wuffs_xxhash32__hasher* x =
-+      (wuffs_xxhash32__hasher*)(calloc(1, sizeof(wuffs_xxhash32__hasher)));
-   if (!x) {
-     return NULL;
-   }
--  if (wuffs_wbmp__decoder__initialize(
--      x, sizeof(wuffs_wbmp__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+  if (wuffs_xxhash32__hasher__initialize(
-+      x, sizeof(wuffs_xxhash32__hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-     free(x);
-     return NULL;
-   }
-@@ -60592,18 +75592,18 @@ wuffs_wbmp__decoder__alloc(void) {
- }
- 
- size_t
--sizeof__wuffs_wbmp__decoder(void) {
--  return sizeof(wuffs_wbmp__decoder);
-+sizeof__wuffs_xxhash32__hasher(void) {
-+  return sizeof(wuffs_xxhash32__hasher);
- }
- 
- // ---------------- Function Implementations
- 
--// -------- func wbmp.decoder.get_quirk
-+// -------- func xxhash32.hasher.get_quirk
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_wbmp__decoder__get_quirk(
--    const wuffs_wbmp__decoder* self,
-+wuffs_xxhash32__hasher__get_quirk(
-+    const wuffs_xxhash32__hasher* self,
-     uint32_t a_key) {
-   if (!self) {
-     return 0;
-@@ -60616,12 +75616,12 @@ wuffs_wbmp__decoder__get_quirk(
-   return 0u;
- }
- 
--// -------- func wbmp.decoder.set_quirk
-+// -------- func xxhash32.hasher.set_quirk
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_wbmp__decoder__set_quirk(
--    wuffs_wbmp__decoder* self,
-+wuffs_xxhash32__hasher__set_quirk(
-+    wuffs_xxhash32__hasher* self,
-     uint32_t a_key,
-     uint64_t a_value) {
-   if (!self) {
-@@ -60637,627 +75637,387 @@ wuffs_wbmp__decoder__set_quirk(
-   return wuffs_base__make_status(wuffs_base__error__unsupported_option);
- }
- 
--// -------- func wbmp.decoder.decode_image_config
-+// -------- func xxhash32.hasher.update
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_wbmp__decoder__decode_image_config(
--    wuffs_wbmp__decoder* self,
--    wuffs_base__image_config* a_dst,
--    wuffs_base__io_buffer* a_src) {
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
-+wuffs_xxhash32__hasher__update(
-+    wuffs_xxhash32__hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-   if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+    return wuffs_base__make_empty_struct();
-   }
-   if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--  if (!a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 1)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
--  }
--  self->private_impl.active_coroutine = 0;
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
--
--  uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    while (true) {
--      {
--        wuffs_base__status t_0 = wuffs_wbmp__decoder__do_decode_image_config(self, a_dst, a_src);
--        v_status = t_0;
--      }
--      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_wbmp__error__truncated_input);
--        goto exit;
--      }
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
--    }
--
--    ok:
--    self->private_impl.p_decode_image_config[0] = 0;
--    goto exit;
--  }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
--
--  goto exit;
--  exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_empty_struct();
-   }
--  return status;
--}
--
--// -------- func wbmp.decoder.do_decode_image_config
--
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_wbmp__decoder__do_decode_image_config(
--    wuffs_wbmp__decoder* self,
--    wuffs_base__image_config* a_dst,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  uint8_t v_c = 0;
--  uint32_t v_i = 0;
--  uint32_t v_p = 0;
--
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
-+  wuffs_base__slice_u8 v_remaining = {0};
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0];
--  if (coro_susp_point) {
--    v_i = self->private_data.s_do_decode_image_config[0].v_i;
--    v_p = self->private_data.s_do_decode_image_config[0].v_p;
-+  if ((self->private_impl.f_length_modulo_u32 == 0u) &&  ! self->private_impl.f_length_overflows_u32) {
-+    self->private_impl.f_v0 = 606290984u;
-+    self->private_impl.f_v1 = 2246822519u;
-+    self->private_impl.f_v2 = 0u;
-+    self->private_impl.f_v3 = 1640531535u;
-   }
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    if (self->private_impl.f_call_sequence != 0u) {
--      status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
--      goto exit;
--    }
--    v_i = 0u;
--    while (v_i < 2u) {
--      {
--        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--          goto suspend;
--        }
--        uint8_t t_0 = *iop_a_src++;
--        v_c = t_0;
--      }
--      if (v_c != 0u) {
--        status = wuffs_base__make_status(wuffs_wbmp__error__bad_header);
--        goto exit;
--      }
--      v_i += 1u;
--    }
--    v_i = 0u;
--    while (v_i < 2u) {
--      v_p = 0u;
--      while (true) {
--        {
--          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
--          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
--            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--            goto suspend;
--          }
--          uint8_t t_1 = *iop_a_src++;
--          v_c = t_1;
--        }
--        v_p |= ((uint32_t)((v_c & 127u)));
--        if ((v_c >> 7u) == 0u) {
--          break;
--        } else if (v_p > 131071u) {
--          status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension);
--          goto exit;
--        }
--        v_p <<= 7u;
--      }
--      if (v_i == 0u) {
--        self->private_impl.f_width = v_p;
--      } else {
--        self->private_impl.f_height = v_p;
--      }
--      v_i += 1u;
--    }
--    self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
--    if (a_dst != NULL) {
--      wuffs_base__image_config__set(
--          a_dst,
--          2198077448u,
--          0u,
--          self->private_impl.f_width,
--          self->private_impl.f_height,
--          self->private_impl.f_frame_config_io_position,
--          true);
-+  while (((uint64_t)(a_x.len)) > 0u) {
-+    v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0u);
-+    if (((uint64_t)(a_x.len)) > 16777216u) {
-+      v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 16777216u);
-+      a_x = wuffs_base__slice_u8__subslice_j(a_x, 16777216u);
-     }
--    self->private_impl.f_call_sequence = 32u;
--
--    goto ok;
--    ok:
--    self->private_impl.p_do_decode_image_config[0] = 0;
--    goto exit;
--  }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_do_decode_image_config[0].v_i = v_i;
--  self->private_data.s_do_decode_image_config[0].v_p = v_p;
--
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+    wuffs_xxhash32__hasher__up(self, a_x);
-+    a_x = v_remaining;
-   }
--
--  return status;
-+  return wuffs_base__make_empty_struct();
- }
- 
--// -------- func wbmp.decoder.decode_frame_config
-+// -------- func xxhash32.hasher.update_u32
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_wbmp__decoder__decode_frame_config(
--    wuffs_wbmp__decoder* self,
--    wuffs_base__frame_config* a_dst,
--    wuffs_base__io_buffer* a_src) {
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_xxhash32__hasher__update_u32(
-+    wuffs_xxhash32__hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-   if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+    return 0;
-   }
-   if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--  if (!a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 2)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
--  }
--  self->private_impl.active_coroutine = 0;
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
--
--  uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
--
--    while (true) {
--      {
--        wuffs_base__status t_0 = wuffs_wbmp__decoder__do_decode_frame_config(self, a_dst, a_src);
--        v_status = t_0;
--      }
--      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_wbmp__error__truncated_input);
--        goto exit;
--      }
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
--    }
--
--    ok:
--    self->private_impl.p_decode_frame_config[0] = 0;
--    goto exit;
-+    return 0;
-   }
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
--
--  goto exit;
--  exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--  }
--  return status;
-+  wuffs_xxhash32__hasher__update(self, a_x);
-+  return wuffs_xxhash32__hasher__checksum_u32(self);
- }
- 
--// -------- func wbmp.decoder.do_decode_frame_config
-+// -------- func xxhash32.hasher.up
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_wbmp__decoder__do_decode_frame_config(
--    wuffs_wbmp__decoder* self,
--    wuffs_base__frame_config* a_dst,
--    wuffs_base__io_buffer* a_src) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
--
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+static wuffs_base__empty_struct
-+wuffs_xxhash32__hasher__up(
-+    wuffs_xxhash32__hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-+  uint32_t v_new_lmu = 0;
-+  uint32_t v_buf_u32 = 0;
-+  uint32_t v_buf_len = 0;
-+  uint32_t v_v0 = 0;
-+  uint32_t v_v1 = 0;
-+  uint32_t v_v2 = 0;
-+  uint32_t v_v3 = 0;
-+  wuffs_base__slice_u8 v_p = {0};
- 
--    if (self->private_impl.f_call_sequence == 32u) {
--    } else if (self->private_impl.f_call_sequence < 32u) {
--      if (a_src) {
--        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--      }
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      status = wuffs_wbmp__decoder__do_decode_image_config(self, NULL, a_src);
--      if (a_src) {
--        iop_a_src = a_src->data.ptr + a_src->meta.ri;
--      }
--      if (status.repr) {
--        goto suspend;
--      }
--    } else if (self->private_impl.f_call_sequence == 40u) {
--      if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
--        status = wuffs_base__make_status(wuffs_base__error__bad_restart);
--        goto exit;
--      }
--    } else if (self->private_impl.f_call_sequence == 64u) {
--      self->private_impl.f_call_sequence = 96u;
--      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--      goto ok;
--    } else {
--      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--      goto ok;
-+  v_new_lmu = ((uint32_t)(self->private_impl.f_length_modulo_u32 + ((uint32_t)(((uint64_t)(a_x.len))))));
-+  self->private_impl.f_length_overflows_u32 = ((v_new_lmu < self->private_impl.f_length_modulo_u32) || self->private_impl.f_length_overflows_u32);
-+  self->private_impl.f_length_modulo_u32 = v_new_lmu;
-+  while (true) {
-+    if (self->private_impl.f_buf_len >= 16u) {
-+      v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[0u])) |
-+          (((uint32_t)(self->private_impl.f_buf_data[1u])) << 8u) |
-+          (((uint32_t)(self->private_impl.f_buf_data[2u])) << 16u) |
-+          (((uint32_t)(self->private_impl.f_buf_data[3u])) << 24u));
-+      v_v0 = ((uint32_t)(self->private_impl.f_v0 + ((uint32_t)(v_buf_u32 * 2246822519u))));
-+      v_v0 = (((uint32_t)(v_v0 << 13u)) | (v_v0 >> 19u));
-+      self->private_impl.f_v0 = ((uint32_t)(v_v0 * 2654435761u));
-+      v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[4u])) |
-+          (((uint32_t)(self->private_impl.f_buf_data[5u])) << 8u) |
-+          (((uint32_t)(self->private_impl.f_buf_data[6u])) << 16u) |
-+          (((uint32_t)(self->private_impl.f_buf_data[7u])) << 24u));
-+      v_v1 = ((uint32_t)(self->private_impl.f_v1 + ((uint32_t)(v_buf_u32 * 2246822519u))));
-+      v_v1 = (((uint32_t)(v_v1 << 13u)) | (v_v1 >> 19u));
-+      self->private_impl.f_v1 = ((uint32_t)(v_v1 * 2654435761u));
-+      v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[8u])) |
-+          (((uint32_t)(self->private_impl.f_buf_data[9u])) << 8u) |
-+          (((uint32_t)(self->private_impl.f_buf_data[10u])) << 16u) |
-+          (((uint32_t)(self->private_impl.f_buf_data[11u])) << 24u));
-+      v_v2 = ((uint32_t)(self->private_impl.f_v2 + ((uint32_t)(v_buf_u32 * 2246822519u))));
-+      v_v2 = (((uint32_t)(v_v2 << 13u)) | (v_v2 >> 19u));
-+      self->private_impl.f_v2 = ((uint32_t)(v_v2 * 2654435761u));
-+      v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[12u])) |
-+          (((uint32_t)(self->private_impl.f_buf_data[13u])) << 8u) |
-+          (((uint32_t)(self->private_impl.f_buf_data[14u])) << 16u) |
-+          (((uint32_t)(self->private_impl.f_buf_data[15u])) << 24u));
-+      v_v3 = ((uint32_t)(self->private_impl.f_v3 + ((uint32_t)(v_buf_u32 * 2246822519u))));
-+      v_v3 = (((uint32_t)(v_v3 << 13u)) | (v_v3 >> 19u));
-+      self->private_impl.f_v3 = ((uint32_t)(v_v3 * 2654435761u));
-+      self->private_impl.f_buf_len = 0u;
-+      break;
-     }
--    if (a_dst != NULL) {
--      wuffs_base__frame_config__set(
--          a_dst,
--          wuffs_base__utility__make_rect_ie_u32(
--          0u,
--          0u,
--          self->private_impl.f_width,
--          self->private_impl.f_height),
--          ((wuffs_base__flicks)(0u)),
--          0u,
--          self->private_impl.f_frame_config_io_position,
--          0u,
--          true,
--          false,
--          4278190080u);
-+    if (((uint64_t)(a_x.len)) <= 0u) {
-+      return wuffs_base__make_empty_struct();
-     }
--    self->private_impl.f_call_sequence = 64u;
--
--    ok:
--    self->private_impl.p_do_decode_frame_config[0] = 0;
--    goto exit;
-+    self->private_impl.f_buf_data[self->private_impl.f_buf_len] = a_x.ptr[0u];
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+    self->private_impl.f_buf_len += 1u;
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
-   }
--
--  goto suspend;
--  suspend:
--  self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  v_buf_len = ((uint32_t)(((uint8_t)(self->private_impl.f_buf_len & 15u))));
-+  v_v0 = self->private_impl.f_v0;
-+  v_v1 = self->private_impl.f_v1;
-+  v_v2 = self->private_impl.f_v2;
-+  v_v3 = self->private_impl.f_v3;
-+  {
-+    wuffs_base__slice_u8 i_slice_p = a_x;
-+    v_p.ptr = i_slice_p.ptr;
-+    v_p.len = 16;
-+    const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 16) * 16));
-+    while (v_p.ptr < i_end0_p) {
-+      v_buf_u32 = (((uint32_t)(v_p.ptr[0u])) |
-+          (((uint32_t)(v_p.ptr[1u])) << 8u) |
-+          (((uint32_t)(v_p.ptr[2u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[3u])) << 24u));
-+      v_v0 = ((uint32_t)(v_v0 + ((uint32_t)(v_buf_u32 * 2246822519u))));
-+      v_v0 = (((uint32_t)(v_v0 << 13u)) | (v_v0 >> 19u));
-+      v_v0 = ((uint32_t)(v_v0 * 2654435761u));
-+      v_buf_u32 = (((uint32_t)(v_p.ptr[4u])) |
-+          (((uint32_t)(v_p.ptr[5u])) << 8u) |
-+          (((uint32_t)(v_p.ptr[6u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[7u])) << 24u));
-+      v_v1 = ((uint32_t)(v_v1 + ((uint32_t)(v_buf_u32 * 2246822519u))));
-+      v_v1 = (((uint32_t)(v_v1 << 13u)) | (v_v1 >> 19u));
-+      v_v1 = ((uint32_t)(v_v1 * 2654435761u));
-+      v_buf_u32 = (((uint32_t)(v_p.ptr[8u])) |
-+          (((uint32_t)(v_p.ptr[9u])) << 8u) |
-+          (((uint32_t)(v_p.ptr[10u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[11u])) << 24u));
-+      v_v2 = ((uint32_t)(v_v2 + ((uint32_t)(v_buf_u32 * 2246822519u))));
-+      v_v2 = (((uint32_t)(v_v2 << 13u)) | (v_v2 >> 19u));
-+      v_v2 = ((uint32_t)(v_v2 * 2654435761u));
-+      v_buf_u32 = (((uint32_t)(v_p.ptr[12u])) |
-+          (((uint32_t)(v_p.ptr[13u])) << 8u) |
-+          (((uint32_t)(v_p.ptr[14u])) << 16u) |
-+          (((uint32_t)(v_p.ptr[15u])) << 24u));
-+      v_v3 = ((uint32_t)(v_v3 + ((uint32_t)(v_buf_u32 * 2246822519u))));
-+      v_v3 = (((uint32_t)(v_v3 << 13u)) | (v_v3 >> 19u));
-+      v_v3 = ((uint32_t)(v_v3 * 2654435761u));
-+      v_p.ptr += 16;
-+    }
-+    v_p.len = 1;
-+    const uint8_t* i_end1_p = wuffs_private_impl__ptr_u8_plus_len(i_slice_p.ptr, i_slice_p.len);
-+    while (v_p.ptr < i_end1_p) {
-+      self->private_impl.f_buf_data[v_buf_len] = v_p.ptr[0u];
-+      v_buf_len = ((v_buf_len + 1u) & 15u);
-+      v_p.ptr += 1;
-+    }
-+    v_p.len = 0;
-   }
--
--  return status;
-+  self->private_impl.f_buf_len = ((uint8_t)(v_buf_len));
-+  self->private_impl.f_v0 = v_v0;
-+  self->private_impl.f_v1 = v_v1;
-+  self->private_impl.f_v2 = v_v2;
-+  self->private_impl.f_v3 = v_v3;
-+  return wuffs_base__make_empty_struct();
- }
- 
--// -------- func wbmp.decoder.decode_frame
-+// -------- func xxhash32.hasher.checksum_u32
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_wbmp__decoder__decode_frame(
--    wuffs_wbmp__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts) {
-+WUFFS_BASE__MAYBE_STATIC uint32_t
-+wuffs_xxhash32__hasher__checksum_u32(
-+    const wuffs_xxhash32__hasher* self) {
-   if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+    return 0;
-   }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return 0;
-+  }
-+
-+  uint32_t v_ret = 0;
-+  uint32_t v_i = 0;
-+  uint32_t v_n = 0;
-+  uint32_t v_buf_u32 = 0;
-+
-+  if ((self->private_impl.f_length_modulo_u32 >= 16u) || self->private_impl.f_length_overflows_u32) {
-+    v_ret += (((uint32_t)(self->private_impl.f_v0 << 1u)) | (self->private_impl.f_v0 >> 31u));
-+    v_ret += (((uint32_t)(self->private_impl.f_v1 << 7u)) | (self->private_impl.f_v1 >> 25u));
-+    v_ret += (((uint32_t)(self->private_impl.f_v2 << 12u)) | (self->private_impl.f_v2 >> 20u));
-+    v_ret += (((uint32_t)(self->private_impl.f_v3 << 18u)) | (self->private_impl.f_v3 >> 14u));
-+    v_ret += self->private_impl.f_length_modulo_u32;
-+  } else {
-+    v_ret += 374761393u;
-+    v_ret += self->private_impl.f_length_modulo_u32;
-+  }
-+  v_n = 16u;
-+  v_n = wuffs_base__u32__min(v_n, ((uint32_t)(self->private_impl.f_buf_len)));
-+  if (4u <= v_n) {
-+    v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[0u])) |
-+        (((uint32_t)(self->private_impl.f_buf_data[1u])) << 8u) |
-+        (((uint32_t)(self->private_impl.f_buf_data[2u])) << 16u) |
-+        (((uint32_t)(self->private_impl.f_buf_data[3u])) << 24u));
-+    v_ret += ((uint32_t)(v_buf_u32 * 3266489917u));
-+    v_ret = (((uint32_t)(v_ret << 17u)) | (v_ret >> 15u));
-+    v_ret *= 668265263u;
-+    v_i = 4u;
-+  }
-+  if (8u <= v_n) {
-+    v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[4u])) |
-+        (((uint32_t)(self->private_impl.f_buf_data[5u])) << 8u) |
-+        (((uint32_t)(self->private_impl.f_buf_data[6u])) << 16u) |
-+        (((uint32_t)(self->private_impl.f_buf_data[7u])) << 24u));
-+    v_ret += ((uint32_t)(v_buf_u32 * 3266489917u));
-+    v_ret = (((uint32_t)(v_ret << 17u)) | (v_ret >> 15u));
-+    v_ret *= 668265263u;
-+    v_i = 8u;
-   }
--  if (!a_dst || !a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  if (12u <= v_n) {
-+    v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[8u])) |
-+        (((uint32_t)(self->private_impl.f_buf_data[9u])) << 8u) |
-+        (((uint32_t)(self->private_impl.f_buf_data[10u])) << 16u) |
-+        (((uint32_t)(self->private_impl.f_buf_data[11u])) << 24u));
-+    v_ret += ((uint32_t)(v_buf_u32 * 3266489917u));
-+    v_ret = (((uint32_t)(v_ret << 17u)) | (v_ret >> 15u));
-+    v_ret *= 668265263u;
-+    v_i = 12u;
-   }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 3)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  while (v_i < v_n) {
-+    v_ret += ((uint32_t)(((uint32_t)(self->private_impl.f_buf_data[v_i])) * 374761393u));
-+    v_ret = (((uint32_t)(v_ret << 11u)) | (v_ret >> 21u));
-+    v_ret *= 2654435761u;
-+    v_i += 1u;
-   }
--  self->private_impl.active_coroutine = 0;
--  wuffs_base__status status = wuffs_base__make_status(NULL);
--
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
--
--  uint32_t coro_susp_point = self->private_impl.p_decode_frame[0];
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+  v_ret ^= (v_ret >> 15u);
-+  v_ret *= 2246822519u;
-+  v_ret ^= (v_ret >> 13u);
-+  v_ret *= 3266489917u;
-+  v_ret ^= (v_ret >> 16u);
-+  return v_ret;
-+}
- 
--    while (true) {
--      {
--        wuffs_base__status t_0 = wuffs_wbmp__decoder__do_decode_frame(self,
--            a_dst,
--            a_src,
--            a_blend,
--            a_workbuf,
--            a_opts);
--        v_status = t_0;
--      }
--      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
--        status = wuffs_base__make_status(wuffs_wbmp__error__truncated_input);
--        goto exit;
--      }
--      status = v_status;
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
--    }
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH32)
- 
--    ok:
--    self->private_impl.p_decode_frame[0] = 0;
--    goto exit;
--  }
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH64)
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
-+// ---------------- Status Codes Implementations
- 
--  goto exit;
--  exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--  }
--  return status;
--}
-+// ---------------- Private Consts
- 
--// -------- func wbmp.decoder.do_decode_frame
-+#define WUFFS_XXHASH64__XXH_PRIME64_1 11400714785074694791u
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__status
--wuffs_wbmp__decoder__do_decode_frame(
--    wuffs_wbmp__decoder* self,
--    wuffs_base__pixel_buffer* a_dst,
--    wuffs_base__io_buffer* a_src,
--    wuffs_base__pixel_blend a_blend,
--    wuffs_base__slice_u8 a_workbuf,
--    wuffs_base__decode_frame_options* a_opts) {
--  wuffs_base__status status = wuffs_base__make_status(NULL);
-+#define WUFFS_XXHASH64__XXH_PRIME64_2 14029467366897019727u
- 
--  wuffs_base__status v_status = wuffs_base__make_status(NULL);
--  wuffs_base__pixel_format v_dst_pixfmt = {0};
--  uint32_t v_dst_bits_per_pixel = 0;
--  uint64_t v_dst_bytes_per_pixel = 0;
--  uint64_t v_dst_x_in_bytes = 0;
--  uint32_t v_dst_x = 0;
--  uint32_t v_dst_y = 0;
--  wuffs_base__table_u8 v_tab = {0};
--  wuffs_base__slice_u8 v_dst = {0};
--  uint8_t v_src[1] = {0};
--  uint8_t v_c = 0;
-+#define WUFFS_XXHASH64__XXH_PRIME64_3 1609587929392839161u
- 
--  const uint8_t* iop_a_src = NULL;
--  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
--  if (a_src && a_src->data.ptr) {
--    io0_a_src = a_src->data.ptr;
--    io1_a_src = io0_a_src + a_src->meta.ri;
--    iop_a_src = io1_a_src;
--    io2_a_src = io0_a_src + a_src->meta.wi;
--  }
-+#define WUFFS_XXHASH64__XXH_PRIME64_4 9650029242287828579u
- 
--  uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0];
--  if (coro_susp_point) {
--    v_dst_bytes_per_pixel = self->private_data.s_do_decode_frame[0].v_dst_bytes_per_pixel;
--    v_dst_x = self->private_data.s_do_decode_frame[0].v_dst_x;
--    v_dst_y = self->private_data.s_do_decode_frame[0].v_dst_y;
--    memcpy(v_src, self->private_data.s_do_decode_frame[0].v_src, sizeof(v_src));
--    v_c = self->private_data.s_do_decode_frame[0].v_c;
--  }
--  switch (coro_susp_point) {
--    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+#define WUFFS_XXHASH64__XXH_PRIME64_5 2870177450012600261u
- 
--    if (self->private_impl.f_call_sequence == 64u) {
--    } else if (self->private_impl.f_call_sequence < 64u) {
--      if (a_src) {
--        a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--      }
--      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
--      status = wuffs_wbmp__decoder__do_decode_frame_config(self, NULL, a_src);
--      if (a_src) {
--        iop_a_src = a_src->data.ptr + a_src->meta.ri;
--      }
--      if (status.repr) {
--        goto suspend;
--      }
--    } else {
--      status = wuffs_base__make_status(wuffs_base__note__end_of_data);
--      goto ok;
--    }
--    v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
--        wuffs_base__pixel_buffer__pixel_format(a_dst),
--        wuffs_base__pixel_buffer__palette(a_dst),
--        wuffs_base__utility__make_pixel_format(536870920u),
--        wuffs_base__utility__empty_slice_u8(),
--        a_blend);
--    if ( ! wuffs_base__status__is_ok(&v_status)) {
--      status = v_status;
--      if (wuffs_base__status__is_error(&status)) {
--        goto exit;
--      } else if (wuffs_base__status__is_suspension(&status)) {
--        status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
--        goto exit;
--      }
--      goto ok;
--    }
--    v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
--    v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
--    if ((v_dst_bits_per_pixel & 7u) != 0u) {
--      status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
--      goto exit;
--    }
--    v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8u)));
--    if (self->private_impl.f_width > 0u) {
--      v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
--      while (v_dst_y < self->private_impl.f_height) {
--        v_dst = wuffs_base__table_u8__row_u32(v_tab, v_dst_y);
--        v_dst_x = 0u;
--        while (v_dst_x < self->private_impl.f_width) {
--          if ((v_dst_x & 7u) == 0u) {
--            while (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
--              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
--              WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
--              v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0u);
--              v_dst = wuffs_base__table_u8__row_u32(v_tab, v_dst_y);
--              v_dst_x_in_bytes = (((uint64_t)(v_dst_x)) * v_dst_bytes_per_pixel);
--              if (v_dst_x_in_bytes <= ((uint64_t)(v_dst.len))) {
--                v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_x_in_bytes);
--              }
--            }
--            v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
--            iop_a_src += 1u;
--          }
--          if ((v_c & 128u) == 0u) {
--            v_src[0u] = 0u;
--          } else {
--            v_src[0u] = 255u;
--          }
--          v_c = ((uint8_t)((((uint32_t)(v_c)) << 1u)));
--          wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, wuffs_base__utility__empty_slice_u8(), wuffs_base__make_slice_u8(v_src, 1));
--          if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) {
--            v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel);
--          }
--          v_dst_x += 1u;
--        }
--        v_dst_y += 1u;
--      }
--    }
--    self->private_impl.f_call_sequence = 96u;
-+#define WUFFS_XXHASH64__INITIAL_V0 6983438078262162902u
- 
--    ok:
--    self->private_impl.p_do_decode_frame[0] = 0;
--    goto exit;
--  }
-+#define WUFFS_XXHASH64__INITIAL_V1 14029467366897019727u
- 
--  goto suspend;
--  suspend:
--  self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
--  self->private_data.s_do_decode_frame[0].v_dst_bytes_per_pixel = v_dst_bytes_per_pixel;
--  self->private_data.s_do_decode_frame[0].v_dst_x = v_dst_x;
--  self->private_data.s_do_decode_frame[0].v_dst_y = v_dst_y;
--  memcpy(self->private_data.s_do_decode_frame[0].v_src, v_src, sizeof(v_src));
--  self->private_data.s_do_decode_frame[0].v_c = v_c;
-+#define WUFFS_XXHASH64__INITIAL_V2 0u
- 
--  goto exit;
--  exit:
--  if (a_src && a_src->data.ptr) {
--    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
--  }
-+#define WUFFS_XXHASH64__INITIAL_V3 7046029288634856825u
- 
--  return status;
--}
-+// ---------------- Private Initializer Prototypes
- 
--// -------- func wbmp.decoder.frame_dirty_rect
-+// ---------------- Private Function Prototypes
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
--wuffs_wbmp__decoder__frame_dirty_rect(
--    const wuffs_wbmp__decoder* self) {
--  if (!self) {
--    return wuffs_base__utility__empty_rect_ie_u32();
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_rect_ie_u32();
--  }
-+static wuffs_base__empty_struct
-+wuffs_xxhash64__hasher__up(
-+    wuffs_xxhash64__hasher* self,
-+    wuffs_base__slice_u8 a_x);
- 
--  return wuffs_base__utility__make_rect_ie_u32(
--      0u,
--      0u,
--      self->private_impl.f_width,
--      self->private_impl.f_height);
--}
-+// ---------------- VTables
- 
--// -------- func wbmp.decoder.num_animation_loops
-+const wuffs_base__hasher_u64__func_ptrs
-+wuffs_xxhash64__hasher__func_ptrs_for__wuffs_base__hasher_u64 = {
-+  (uint64_t(*)(const void*))(&wuffs_xxhash64__hasher__checksum_u64),
-+  (uint64_t(*)(const void*,
-+      uint32_t))(&wuffs_xxhash64__hasher__get_quirk),
-+  (wuffs_base__status(*)(void*,
-+      uint32_t,
-+      uint64_t))(&wuffs_xxhash64__hasher__set_quirk),
-+  (wuffs_base__empty_struct(*)(void*,
-+      wuffs_base__slice_u8))(&wuffs_xxhash64__hasher__update),
-+  (uint64_t(*)(void*,
-+      wuffs_base__slice_u8))(&wuffs_xxhash64__hasher__update_u64),
-+};
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_wbmp__decoder__num_animation_loops(
--    const wuffs_wbmp__decoder* self) {
-+// ---------------- Initializer Implementations
-+
-+wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
-+wuffs_xxhash64__hasher__initialize(
-+    wuffs_xxhash64__hasher* self,
-+    size_t sizeof_star_self,
-+    uint64_t wuffs_version,
-+    uint32_t options){
-   if (!self) {
--    return 0;
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
-+  if (sizeof(*self) != sizeof_star_self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  }
-+  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
-+      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-   }
- 
--  return 0u;
--}
-+  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
-+    // The whole point of this if-check is to detect an uninitialized *self.
-+    // We disable the warning on GCC. Clang-5.0 does not have this warning.
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-+#endif
-+    if (self->private_impl.magic != 0) {
-+      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+    }
-+#if !defined(__clang__) && defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+  } else {
-+    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
-+      memset(self, 0, sizeof(*self));
-+      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-+    } else {
-+      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+    }
-+  }
- 
--// -------- func wbmp.decoder.num_decoded_frame_configs
-+  self->private_impl.magic = WUFFS_BASE__MAGIC;
-+  self->private_impl.vtable_for__wuffs_base__hasher_u64.vtable_name =
-+      wuffs_base__hasher_u64__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__hasher_u64.function_pointers =
-+      (const void*)(&wuffs_xxhash64__hasher__func_ptrs_for__wuffs_base__hasher_u64);
-+  return wuffs_base__make_status(NULL);
-+}
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_wbmp__decoder__num_decoded_frame_configs(
--    const wuffs_wbmp__decoder* self) {
--  if (!self) {
--    return 0;
-+wuffs_xxhash64__hasher*
-+wuffs_xxhash64__hasher__alloc(void) {
-+  wuffs_xxhash64__hasher* x =
-+      (wuffs_xxhash64__hasher*)(calloc(1, sizeof(wuffs_xxhash64__hasher)));
-+  if (!x) {
-+    return NULL;
-   }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
-+  if (wuffs_xxhash64__hasher__initialize(
-+      x, sizeof(wuffs_xxhash64__hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+    free(x);
-+    return NULL;
-   }
-+  return x;
-+}
- 
--  if (self->private_impl.f_call_sequence > 32u) {
--    return 1u;
--  }
--  return 0u;
-+size_t
-+sizeof__wuffs_xxhash64__hasher(void) {
-+  return sizeof(wuffs_xxhash64__hasher);
- }
- 
--// -------- func wbmp.decoder.num_decoded_frames
-+// ---------------- Function Implementations
-+
-+// -------- func xxhash64.hasher.get_quirk
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_wbmp__decoder__num_decoded_frames(
--    const wuffs_wbmp__decoder* self) {
-+wuffs_xxhash64__hasher__get_quirk(
-+    const wuffs_xxhash64__hasher* self,
-+    uint32_t a_key) {
-   if (!self) {
-     return 0;
-   }
-@@ -61266,20 +76026,17 @@ wuffs_wbmp__decoder__num_decoded_frames(
-     return 0;
-   }
- 
--  if (self->private_impl.f_call_sequence > 64u) {
--    return 1u;
--  }
-   return 0u;
- }
- 
--// -------- func wbmp.decoder.restart_frame
-+// -------- func xxhash64.hasher.set_quirk
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_wbmp__decoder__restart_frame(
--    wuffs_wbmp__decoder* self,
--    uint64_t a_index,
--    uint64_t a_io_position) {
-+wuffs_xxhash64__hasher__set_quirk(
-+    wuffs_xxhash64__hasher* self,
-+    uint32_t a_key,
-+    uint64_t a_value) {
-   if (!self) {
-     return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
-@@ -61290,77 +76047,206 @@ wuffs_wbmp__decoder__restart_frame(
-         : wuffs_base__error__initialize_not_called);
-   }
- 
--  if (self->private_impl.f_call_sequence < 32u) {
--    return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
--  }
--  if (a_index != 0u) {
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  self->private_impl.f_call_sequence = 40u;
--  self->private_impl.f_frame_config_io_position = a_io_position;
--  return wuffs_base__make_status(NULL);
-+  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
- }
- 
--// -------- func wbmp.decoder.set_report_metadata
-+// -------- func xxhash64.hasher.update
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_wbmp__decoder__set_report_metadata(
--    wuffs_wbmp__decoder* self,
--    uint32_t a_fourcc,
--    bool a_report) {
-+wuffs_xxhash64__hasher__update(
-+    wuffs_xxhash64__hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-+  if (!self) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
-+    return wuffs_base__make_empty_struct();
-+  }
-+
-+  if ((self->private_impl.f_length_modulo_u64 == 0u) &&  ! self->private_impl.f_length_overflows_u64) {
-+    self->private_impl.f_v0 = 6983438078262162902u;
-+    self->private_impl.f_v1 = 14029467366897019727u;
-+    self->private_impl.f_v2 = 0u;
-+    self->private_impl.f_v3 = 7046029288634856825u;
-+  }
-+  wuffs_xxhash64__hasher__up(self, a_x);
-   return wuffs_base__make_empty_struct();
- }
- 
--// -------- func wbmp.decoder.tell_me_more
-+// -------- func xxhash64.hasher.update_u64
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_wbmp__decoder__tell_me_more(
--    wuffs_wbmp__decoder* self,
--    wuffs_base__io_buffer* a_dst,
--    wuffs_base__more_information* a_minfo,
--    wuffs_base__io_buffer* a_src) {
-+WUFFS_BASE__MAYBE_STATIC uint64_t
-+wuffs_xxhash64__hasher__update_u64(
-+    wuffs_xxhash64__hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-   if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-+    return 0;
-   }
-   if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--  if (!a_dst || !a_src) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__bad_argument);
--  }
--  if ((self->private_impl.active_coroutine != 0) &&
--      (self->private_impl.active_coroutine != 4)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
--    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+    return 0;
-   }
--  self->private_impl.active_coroutine = 0;
--  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  status = wuffs_base__make_status(wuffs_base__error__no_more_information);
--  goto exit;
-+  wuffs_xxhash64__hasher__update(self, a_x);
-+  return wuffs_xxhash64__hasher__checksum_u64(self);
-+}
- 
--  goto ok;
--  ok:
--  goto exit;
--  exit:
--  if (wuffs_base__status__is_error(&status)) {
--    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+// -------- func xxhash64.hasher.up
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__empty_struct
-+wuffs_xxhash64__hasher__up(
-+    wuffs_xxhash64__hasher* self,
-+    wuffs_base__slice_u8 a_x) {
-+  uint64_t v_new_lmu = 0;
-+  uint64_t v_buf_u64 = 0;
-+  uint32_t v_buf_len = 0;
-+  uint64_t v_v0 = 0;
-+  uint64_t v_v1 = 0;
-+  uint64_t v_v2 = 0;
-+  uint64_t v_v3 = 0;
-+  wuffs_base__slice_u8 v_p = {0};
-+
-+  v_new_lmu = ((uint64_t)(self->private_impl.f_length_modulo_u64 + ((uint64_t)(a_x.len))));
-+  self->private_impl.f_length_overflows_u64 = ((v_new_lmu < self->private_impl.f_length_modulo_u64) || self->private_impl.f_length_overflows_u64);
-+  self->private_impl.f_length_modulo_u64 = v_new_lmu;
-+  while (true) {
-+    if (self->private_impl.f_buf_len >= 32u) {
-+      v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[0u])) |
-+          (((uint64_t)(self->private_impl.f_buf_data[1u])) << 8u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[2u])) << 16u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[3u])) << 24u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[4u])) << 32u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[5u])) << 40u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[6u])) << 48u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[7u])) << 56u));
-+      v_v0 = ((uint64_t)(self->private_impl.f_v0 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
-+      v_v0 = (((uint64_t)(v_v0 << 31u)) | (v_v0 >> 33u));
-+      self->private_impl.f_v0 = ((uint64_t)(v_v0 * 11400714785074694791u));
-+      v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[8u])) |
-+          (((uint64_t)(self->private_impl.f_buf_data[9u])) << 8u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[10u])) << 16u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[11u])) << 24u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[12u])) << 32u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[13u])) << 40u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[14u])) << 48u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[15u])) << 56u));
-+      v_v1 = ((uint64_t)(self->private_impl.f_v1 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
-+      v_v1 = (((uint64_t)(v_v1 << 31u)) | (v_v1 >> 33u));
-+      self->private_impl.f_v1 = ((uint64_t)(v_v1 * 11400714785074694791u));
-+      v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[16u])) |
-+          (((uint64_t)(self->private_impl.f_buf_data[17u])) << 8u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[18u])) << 16u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[19u])) << 24u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[20u])) << 32u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[21u])) << 40u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[22u])) << 48u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[23u])) << 56u));
-+      v_v2 = ((uint64_t)(self->private_impl.f_v2 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
-+      v_v2 = (((uint64_t)(v_v2 << 31u)) | (v_v2 >> 33u));
-+      self->private_impl.f_v2 = ((uint64_t)(v_v2 * 11400714785074694791u));
-+      v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[24u])) |
-+          (((uint64_t)(self->private_impl.f_buf_data[25u])) << 8u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[26u])) << 16u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[27u])) << 24u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[28u])) << 32u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[29u])) << 40u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[30u])) << 48u) |
-+          (((uint64_t)(self->private_impl.f_buf_data[31u])) << 56u));
-+      v_v3 = ((uint64_t)(self->private_impl.f_v3 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
-+      v_v3 = (((uint64_t)(v_v3 << 31u)) | (v_v3 >> 33u));
-+      self->private_impl.f_v3 = ((uint64_t)(v_v3 * 11400714785074694791u));
-+      self->private_impl.f_buf_len = 0u;
-+      break;
-+    }
-+    if (((uint64_t)(a_x.len)) <= 0u) {
-+      return wuffs_base__make_empty_struct();
-+    }
-+    self->private_impl.f_buf_data[self->private_impl.f_buf_len] = a_x.ptr[0u];
-+    self->private_impl.f_buf_len += 1u;
-+    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
-+  }
-+  v_buf_len = (self->private_impl.f_buf_len & 31u);
-+  v_v0 = self->private_impl.f_v0;
-+  v_v1 = self->private_impl.f_v1;
-+  v_v2 = self->private_impl.f_v2;
-+  v_v3 = self->private_impl.f_v3;
-+  {
-+    wuffs_base__slice_u8 i_slice_p = a_x;
-+    v_p.ptr = i_slice_p.ptr;
-+    v_p.len = 32;
-+    const uint8_t* i_end0_p = wuffs_private_impl__ptr_u8_plus_len(v_p.ptr, (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32));
-+    while (v_p.ptr < i_end0_p) {
-+      v_buf_u64 = (((uint64_t)(v_p.ptr[0u])) |
-+          (((uint64_t)(v_p.ptr[1u])) << 8u) |
-+          (((uint64_t)(v_p.ptr[2u])) << 16u) |
-+          (((uint64_t)(v_p.ptr[3u])) << 24u) |
-+          (((uint64_t)(v_p.ptr[4u])) << 32u) |
-+          (((uint64_t)(v_p.ptr[5u])) << 40u) |
-+          (((uint64_t)(v_p.ptr[6u])) << 48u) |
-+          (((uint64_t)(v_p.ptr[7u])) << 56u));
-+      v_v0 = ((uint64_t)(v_v0 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
-+      v_v0 = (((uint64_t)(v_v0 << 31u)) | (v_v0 >> 33u));
-+      v_v0 = ((uint64_t)(v_v0 * 11400714785074694791u));
-+      v_buf_u64 = (((uint64_t)(v_p.ptr[8u])) |
-+          (((uint64_t)(v_p.ptr[9u])) << 8u) |
-+          (((uint64_t)(v_p.ptr[10u])) << 16u) |
-+          (((uint64_t)(v_p.ptr[11u])) << 24u) |
-+          (((uint64_t)(v_p.ptr[12u])) << 32u) |
-+          (((uint64_t)(v_p.ptr[13u])) << 40u) |
-+          (((uint64_t)(v_p.ptr[14u])) << 48u) |
-+          (((uint64_t)(v_p.ptr[15u])) << 56u));
-+      v_v1 = ((uint64_t)(v_v1 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
-+      v_v1 = (((uint64_t)(v_v1 << 31u)) | (v_v1 >> 33u));
-+      v_v1 = ((uint64_t)(v_v1 * 11400714785074694791u));
-+      v_buf_u64 = (((uint64_t)(v_p.ptr[16u])) |
-+          (((uint64_t)(v_p.ptr[17u])) << 8u) |
-+          (((uint64_t)(v_p.ptr[18u])) << 16u) |
-+          (((uint64_t)(v_p.ptr[19u])) << 24u) |
-+          (((uint64_t)(v_p.ptr[20u])) << 32u) |
-+          (((uint64_t)(v_p.ptr[21u])) << 40u) |
-+          (((uint64_t)(v_p.ptr[22u])) << 48u) |
-+          (((uint64_t)(v_p.ptr[23u])) << 56u));
-+      v_v2 = ((uint64_t)(v_v2 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
-+      v_v2 = (((uint64_t)(v_v2 << 31u)) | (v_v2 >> 33u));
-+      v_v2 = ((uint64_t)(v_v2 * 11400714785074694791u));
-+      v_buf_u64 = (((uint64_t)(v_p.ptr[24u])) |
-+          (((uint64_t)(v_p.ptr[25u])) << 8u) |
-+          (((uint64_t)(v_p.ptr[26u])) << 16u) |
-+          (((uint64_t)(v_p.ptr[27u])) << 24u) |
-+          (((uint64_t)(v_p.ptr[28u])) << 32u) |
-+          (((uint64_t)(v_p.ptr[29u])) << 40u) |
-+          (((uint64_t)(v_p.ptr[30u])) << 48u) |
-+          (((uint64_t)(v_p.ptr[31u])) << 56u));
-+      v_v3 = ((uint64_t)(v_v3 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
-+      v_v3 = (((uint64_t)(v_v3 << 31u)) | (v_v3 >> 33u));
-+      v_v3 = ((uint64_t)(v_v3 * 11400714785074694791u));
-+      v_p.ptr += 32;
-+    }
-+    v_p.len = 1;
-+    const uint8_t* i_end1_p = wuffs_private_impl__ptr_u8_plus_len(i_slice_p.ptr, i_slice_p.len);
-+    while (v_p.ptr < i_end1_p) {
-+      self->private_impl.f_buf_data[v_buf_len] = v_p.ptr[0u];
-+      v_buf_len = ((v_buf_len + 1u) & 31u);
-+      v_p.ptr += 1;
-+    }
-+    v_p.len = 0;
-   }
--  return status;
-+  self->private_impl.f_buf_len = v_buf_len;
-+  self->private_impl.f_v0 = v_v0;
-+  self->private_impl.f_v1 = v_v1;
-+  self->private_impl.f_v2 = v_v2;
-+  self->private_impl.f_v3 = v_v3;
-+  return wuffs_base__make_empty_struct();
- }
- 
--// -------- func wbmp.decoder.history_retain_length
-+// -------- func xxhash64.hasher.checksum_u64
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_wbmp__decoder__history_retain_length(
--    const wuffs_wbmp__decoder* self) {
-+wuffs_xxhash64__hasher__checksum_u64(
-+    const wuffs_xxhash64__hasher* self) {
-   if (!self) {
-     return 0;
-   }
-@@ -61369,83 +76255,307 @@ wuffs_wbmp__decoder__history_retain_length(
-     return 0;
-   }
- 
--  return 0u;
--}
--
--// -------- func wbmp.decoder.workbuf_len
-+  uint64_t v_ret = 0;
-+  uint64_t v_v0 = 0;
-+  uint64_t v_v1 = 0;
-+  uint64_t v_v2 = 0;
-+  uint64_t v_v3 = 0;
-+  uint32_t v_i = 0;
-+  uint32_t v_i8 = 0;
-+  uint32_t v_n = 0;
-+  uint32_t v_buf_u32 = 0;
-+  uint64_t v_buf_u64 = 0;
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
--wuffs_wbmp__decoder__workbuf_len(
--    const wuffs_wbmp__decoder* self) {
--  if (!self) {
--    return wuffs_base__utility__empty_range_ii_u64();
-+  if ((self->private_impl.f_length_modulo_u64 >= 32u) || self->private_impl.f_length_overflows_u64) {
-+    v_ret += (((uint64_t)(self->private_impl.f_v0 << 1u)) | (self->private_impl.f_v0 >> 63u));
-+    v_ret += (((uint64_t)(self->private_impl.f_v1 << 7u)) | (self->private_impl.f_v1 >> 57u));
-+    v_ret += (((uint64_t)(self->private_impl.f_v2 << 12u)) | (self->private_impl.f_v2 >> 52u));
-+    v_ret += (((uint64_t)(self->private_impl.f_v3 << 18u)) | (self->private_impl.f_v3 >> 46u));
-+    v_v0 = ((uint64_t)(self->private_impl.f_v0 * 14029467366897019727u));
-+    v_v0 = (((uint64_t)(v_v0 << 31u)) | (v_v0 >> 33u));
-+    v_v0 *= 11400714785074694791u;
-+    v_v1 = ((uint64_t)(self->private_impl.f_v1 * 14029467366897019727u));
-+    v_v1 = (((uint64_t)(v_v1 << 31u)) | (v_v1 >> 33u));
-+    v_v1 *= 11400714785074694791u;
-+    v_v2 = ((uint64_t)(self->private_impl.f_v2 * 14029467366897019727u));
-+    v_v2 = (((uint64_t)(v_v2 << 31u)) | (v_v2 >> 33u));
-+    v_v2 *= 11400714785074694791u;
-+    v_v3 = ((uint64_t)(self->private_impl.f_v3 * 14029467366897019727u));
-+    v_v3 = (((uint64_t)(v_v3 << 31u)) | (v_v3 >> 33u));
-+    v_v3 *= 11400714785074694791u;
-+    v_ret = ((uint64_t)(((uint64_t)((v_ret ^ v_v0) * 11400714785074694791u)) + 9650029242287828579u));
-+    v_ret = ((uint64_t)(((uint64_t)((v_ret ^ v_v1) * 11400714785074694791u)) + 9650029242287828579u));
-+    v_ret = ((uint64_t)(((uint64_t)((v_ret ^ v_v2) * 11400714785074694791u)) + 9650029242287828579u));
-+    v_ret = ((uint64_t)(((uint64_t)((v_ret ^ v_v3) * 11400714785074694791u)) + 9650029242287828579u));
-+    v_ret += self->private_impl.f_length_modulo_u64;
-+  } else {
-+    v_ret += 2870177450012600261u;
-+    v_ret += self->private_impl.f_length_modulo_u64;
-   }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return wuffs_base__utility__empty_range_ii_u64();
-+  v_n = 32u;
-+  v_n = wuffs_base__u32__min(v_n, self->private_impl.f_buf_len);
-+  if (8u <= v_n) {
-+    v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[0u])) |
-+        (((uint64_t)(self->private_impl.f_buf_data[1u])) << 8u) |
-+        (((uint64_t)(self->private_impl.f_buf_data[2u])) << 16u) |
-+        (((uint64_t)(self->private_impl.f_buf_data[3u])) << 24u) |
-+        (((uint64_t)(self->private_impl.f_buf_data[4u])) << 32u) |
-+        (((uint64_t)(self->private_impl.f_buf_data[5u])) << 40u) |
-+        (((uint64_t)(self->private_impl.f_buf_data[6u])) << 48u) |
-+        (((uint64_t)(self->private_impl.f_buf_data[7u])) << 56u));
-+    v_buf_u64 *= 14029467366897019727u;
-+    v_buf_u64 = (((uint64_t)(v_buf_u64 << 31u)) | (v_buf_u64 >> 33u));
-+    v_buf_u64 *= 11400714785074694791u;
-+    v_ret ^= v_buf_u64;
-+    v_ret = (((uint64_t)(v_ret << 27u)) | (v_ret >> 37u));
-+    v_ret *= 11400714785074694791u;
-+    v_ret += 9650029242287828579u;
-+    v_i = 8u;
-   }
--
--  return wuffs_base__utility__make_range_ii_u64(0u, 0u);
-+  if (16u <= v_n) {
-+    v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[8u])) |
-+        (((uint64_t)(self->private_impl.f_buf_data[9u])) << 8u) |
-+        (((uint64_t)(self->private_impl.f_buf_data[10u])) << 16u) |
-+        (((uint64_t)(self->private_impl.f_buf_data[11u])) << 24u) |
-+        (((uint64_t)(self->private_impl.f_buf_data[12u])) << 32u) |
-+        (((uint64_t)(self->private_impl.f_buf_data[13u])) << 40u) |
-+        (((uint64_t)(self->private_impl.f_buf_data[14u])) << 48u) |
-+        (((uint64_t)(self->private_impl.f_buf_data[15u])) << 56u));
-+    v_buf_u64 *= 14029467366897019727u;
-+    v_buf_u64 = (((uint64_t)(v_buf_u64 << 31u)) | (v_buf_u64 >> 33u));
-+    v_buf_u64 *= 11400714785074694791u;
-+    v_ret ^= v_buf_u64;
-+    v_ret = (((uint64_t)(v_ret << 27u)) | (v_ret >> 37u));
-+    v_ret *= 11400714785074694791u;
-+    v_ret += 9650029242287828579u;
-+    v_i = 16u;
-+  }
-+  if (24u <= v_n) {
-+    v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[16u])) |
-+        (((uint64_t)(self->private_impl.f_buf_data[17u])) << 8u) |
-+        (((uint64_t)(self->private_impl.f_buf_data[18u])) << 16u) |
-+        (((uint64_t)(self->private_impl.f_buf_data[19u])) << 24u) |
-+        (((uint64_t)(self->private_impl.f_buf_data[20u])) << 32u) |
-+        (((uint64_t)(self->private_impl.f_buf_data[21u])) << 40u) |
-+        (((uint64_t)(self->private_impl.f_buf_data[22u])) << 48u) |
-+        (((uint64_t)(self->private_impl.f_buf_data[23u])) << 56u));
-+    v_buf_u64 *= 14029467366897019727u;
-+    v_buf_u64 = (((uint64_t)(v_buf_u64 << 31u)) | (v_buf_u64 >> 33u));
-+    v_buf_u64 *= 11400714785074694791u;
-+    v_ret ^= v_buf_u64;
-+    v_ret = (((uint64_t)(v_ret << 27u)) | (v_ret >> 37u));
-+    v_ret *= 11400714785074694791u;
-+    v_ret += 9650029242287828579u;
-+    v_i = 24u;
-+  }
-+  if ((v_n & 4u) != 0u) {
-+    v_i8 = (v_i & 24u);
-+    v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[(v_i8 + 0u)])) |
-+        (((uint32_t)(self->private_impl.f_buf_data[(v_i8 + 1u)])) << 8u) |
-+        (((uint32_t)(self->private_impl.f_buf_data[(v_i8 + 2u)])) << 16u) |
-+        (((uint32_t)(self->private_impl.f_buf_data[(v_i8 + 3u)])) << 24u));
-+    v_ret ^= ((uint64_t)(((uint64_t)(v_buf_u32)) * 11400714785074694791u));
-+    v_ret = (((uint64_t)(v_ret << 23u)) | (v_ret >> 41u));
-+    v_ret *= 14029467366897019727u;
-+    v_ret += 1609587929392839161u;
-+    v_i = (v_i8 + 4u);
-+  }
-+  while (v_i < v_n) {
-+    v_ret ^= ((uint64_t)(((uint64_t)(self->private_impl.f_buf_data[v_i])) * 2870177450012600261u));
-+    v_ret = (((uint64_t)(v_ret << 11u)) | (v_ret >> 53u));
-+    v_ret *= 11400714785074694791u;
-+    v_i += 1u;
-+  }
-+  v_ret ^= (v_ret >> 33u);
-+  v_ret *= 14029467366897019727u;
-+  v_ret ^= (v_ret >> 29u);
-+  v_ret *= 1609587929392839161u;
-+  v_ret ^= (v_ret >> 32u);
-+  return ((uint64_t)(v_ret));
- }
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP)
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH64)
- 
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH32)
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XZ)
- 
- // ---------------- Status Codes Implementations
- 
--// ---------------- Private Consts
-+const char wuffs_xz__error__bad_bcj_offset[] = "#xz: bad BCJ offset";
-+const char wuffs_xz__error__bad_block_header[] = "#xz: bad block header";
-+const char wuffs_xz__error__bad_checksum[] = "#xz: bad checksum";
-+const char wuffs_xz__error__bad_filter[] = "#xz: bad filter";
-+const char wuffs_xz__error__bad_footer[] = "#xz: bad footer";
-+const char wuffs_xz__error__bad_header[] = "#xz: bad header";
-+const char wuffs_xz__error__bad_header_concatenated_stream[] = "#xz: bad header (concatenated stream)";
-+const char wuffs_xz__error__bad_index[] = "#xz: bad index";
-+const char wuffs_xz__error__bad_padding[] = "#xz: bad padding";
-+const char wuffs_xz__error__truncated_input[] = "#xz: truncated input";
-+const char wuffs_xz__error__unsupported_checksum_algorithm[] = "#xz: unsupported checksum algorithm";
-+const char wuffs_xz__error__unsupported_filter[] = "#xz: unsupported filter";
-+const char wuffs_xz__error__unsupported_filter_combination[] = "#xz: unsupported filter combination";
-+const char wuffs_xz__error__internal_error_inconsistent_bcj_filter_state[] = "#xz: internal error: inconsistent BCJ filter state";
- 
--#define WUFFS_XXHASH32__XXH_PRIME32_1 2654435761
-+// ---------------- Private Consts
- 
--#define WUFFS_XXHASH32__XXH_PRIME32_2 2246822519
-+static const bool
-+WUFFS_XZ__FILTER_04_X86_MASK_TO_ALLOWED_STATUS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  1u, 1u, 1u, 0u, 1u, 0u, 0u, 0u,
-+};
- 
--#define WUFFS_XXHASH32__XXH_PRIME32_3 3266489917
-+static const uint8_t
-+WUFFS_XZ__FILTER_04_X86_MASK_TO_BIT_NUM[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 1u, 2u, 2u, 3u, 3u, 3u, 3u,
-+};
- 
--#define WUFFS_XXHASH32__XXH_PRIME32_4 668265263
-+static const uint32_t
-+WUFFS_XZ__FILTER_04_X86_MASK_TO_XOR_OPERAND[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  4294967295u, 16777215u, 65535u, 65535u, 255u, 255u, 255u, 255u,
-+};
- 
--#define WUFFS_XXHASH32__XXH_PRIME32_5 374761393
-+static const uint8_t
-+WUFFS_XZ__FILTER_06_IA64_BRANCH_TABLE[32] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u,
-+  4u, 4u, 6u, 6u, 0u, 0u, 7u, 7u,
-+  4u, 4u, 0u, 0u, 4u, 4u, 0u, 0u,
-+};
- 
--#define WUFFS_XXHASH32__INITIAL_V0 606290984
-+#define WUFFS_XZ__QUIRKS_BASE 2021322752u
- 
--#define WUFFS_XXHASH32__INITIAL_V1 2246822519
-+static const uint8_t
-+WUFFS_XZ__CHECKSUM_LENGTH[4] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 4u, 8u, 32u,
-+};
- 
--#define WUFFS_XXHASH32__INITIAL_V2 0
-+static const uint8_t
-+WUFFS_XZ__ZEROES[3] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 0u, 0u,
-+};
- 
--#define WUFFS_XXHASH32__INITIAL_V3 1640531535
-+static const uint8_t
-+WUFFS_XZ__BCJ_OFFSET_ALIGNMENT[12] WUFFS_BASE__POTENTIALLY_UNUSED = {
-+  0u, 0u, 0u, 0u, 1u, 4u, 16u, 4u,
-+  2u, 4u, 4u, 2u,
-+};
- 
- // ---------------- Private Initializer Prototypes
- 
- // ---------------- Private Function Prototypes
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_xxhash32__hasher__up(
--    wuffs_xxhash32__hasher* self,
--    wuffs_base__slice_u8 a_x);
-+static uint8_t
-+wuffs_xz__decoder__apply_non_final_filters(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__slice_u8 a_dst_slice);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint8_t
-+wuffs_xz__decoder__apply_non_final_filters__choosy_default(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__slice_u8 a_dst_slice);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint8_t
-+wuffs_xz__decoder__apply_filter_04_x86(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__slice_u8 a_dst_slice);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint8_t
-+wuffs_xz__decoder__apply_filter_05_powerpc(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__slice_u8 a_dst_slice);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint8_t
-+wuffs_xz__decoder__apply_filter_06_ia64(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__slice_u8 a_dst_slice);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint8_t
-+wuffs_xz__decoder__apply_filter_07_arm(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__slice_u8 a_dst_slice);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint8_t
-+wuffs_xz__decoder__apply_filter_08_armthumb(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__slice_u8 a_dst_slice);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint8_t
-+wuffs_xz__decoder__apply_filter_09_sparc(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__slice_u8 a_dst_slice);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint8_t
-+wuffs_xz__decoder__apply_filter_0a_arm64(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__slice_u8 a_dst_slice);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint8_t
-+wuffs_xz__decoder__apply_filter_0b_riscv(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__slice_u8 a_dst_slice);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_xz__decoder__do_transform_io(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_xz__decoder__decode_block_header_with_padding(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_xz__decoder__decode_block_header_sans_padding(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_xz__decoder__verify_index(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__io_buffer* a_src);
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_xz__decoder__verify_footer(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__io_buffer* a_src);
- 
- // ---------------- VTables
- 
--const wuffs_base__hasher_u32__func_ptrs
--wuffs_xxhash32__hasher__func_ptrs_for__wuffs_base__hasher_u32 = {
--  (uint32_t(*)(const void*))(&wuffs_xxhash32__hasher__checksum_u32),
-+const wuffs_base__io_transformer__func_ptrs
-+wuffs_xz__decoder__func_ptrs_for__wuffs_base__io_transformer = {
-+  (wuffs_base__optional_u63(*)(const void*))(&wuffs_xz__decoder__dst_history_retain_length),
-   (uint64_t(*)(const void*,
--      uint32_t))(&wuffs_xxhash32__hasher__get_quirk),
-+      uint32_t))(&wuffs_xz__decoder__get_quirk),
-   (wuffs_base__status(*)(void*,
-       uint32_t,
--      uint64_t))(&wuffs_xxhash32__hasher__set_quirk),
--  (wuffs_base__empty_struct(*)(void*,
--      wuffs_base__slice_u8))(&wuffs_xxhash32__hasher__update),
--  (uint32_t(*)(void*,
--      wuffs_base__slice_u8))(&wuffs_xxhash32__hasher__update_u32),
-+      uint64_t))(&wuffs_xz__decoder__set_quirk),
-+  (wuffs_base__status(*)(void*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__io_buffer*,
-+      wuffs_base__slice_u8))(&wuffs_xz__decoder__transform_io),
-+  (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_xz__decoder__workbuf_len),
- };
- 
- // ---------------- Initializer Implementations
- 
- wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_xxhash32__hasher__initialize(
--    wuffs_xxhash32__hasher* self,
-+wuffs_xz__decoder__initialize(
-+    wuffs_xz__decoder* self,
-     size_t sizeof_star_self,
-     uint64_t wuffs_version,
-     uint32_t options){
-@@ -61482,23 +76592,53 @@ wuffs_xxhash32__hasher__initialize(
-     }
-   }
- 
-+  self->private_impl.choosy_apply_non_final_filters = &wuffs_xz__decoder__apply_non_final_filters__choosy_default;
-+
-+  {
-+    wuffs_base__status z = wuffs_crc32__ieee_hasher__initialize(
-+        &self->private_data.f_crc32, sizeof(self->private_data.f_crc32), WUFFS_VERSION, options);
-+    if (z.repr) {
-+      return z;
-+    }
-+  }
-+  {
-+    wuffs_base__status z = wuffs_crc64__ecma_hasher__initialize(
-+        &self->private_data.f_crc64, sizeof(self->private_data.f_crc64), WUFFS_VERSION, options);
-+    if (z.repr) {
-+      return z;
-+    }
-+  }
-+  {
-+    wuffs_base__status z = wuffs_sha256__hasher__initialize(
-+        &self->private_data.f_sha256, sizeof(self->private_data.f_sha256), WUFFS_VERSION, options);
-+    if (z.repr) {
-+      return z;
-+    }
-+  }
-+  {
-+    wuffs_base__status z = wuffs_lzma__decoder__initialize(
-+        &self->private_data.f_lzma, sizeof(self->private_data.f_lzma), WUFFS_VERSION, options);
-+    if (z.repr) {
-+      return z;
-+    }
-+  }
-   self->private_impl.magic = WUFFS_BASE__MAGIC;
--  self->private_impl.vtable_for__wuffs_base__hasher_u32.vtable_name =
--      wuffs_base__hasher_u32__vtable_name;
--  self->private_impl.vtable_for__wuffs_base__hasher_u32.function_pointers =
--      (const void*)(&wuffs_xxhash32__hasher__func_ptrs_for__wuffs_base__hasher_u32);
-+  self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
-+      wuffs_base__io_transformer__vtable_name;
-+  self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
-+      (const void*)(&wuffs_xz__decoder__func_ptrs_for__wuffs_base__io_transformer);
-   return wuffs_base__make_status(NULL);
- }
- 
--wuffs_xxhash32__hasher*
--wuffs_xxhash32__hasher__alloc(void) {
--  wuffs_xxhash32__hasher* x =
--      (wuffs_xxhash32__hasher*)(calloc(sizeof(wuffs_xxhash32__hasher), 1));
-+wuffs_xz__decoder*
-+wuffs_xz__decoder__alloc(void) {
-+  wuffs_xz__decoder* x =
-+      (wuffs_xz__decoder*)(calloc(1, sizeof(wuffs_xz__decoder)));
-   if (!x) {
-     return NULL;
-   }
--  if (wuffs_xxhash32__hasher__initialize(
--      x, sizeof(wuffs_xxhash32__hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-+  if (wuffs_xz__decoder__initialize(
-+      x, sizeof(wuffs_xz__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
-     free(x);
-     return NULL;
-   }
-@@ -61506,18 +76646,511 @@ wuffs_xxhash32__hasher__alloc(void) {
- }
- 
- size_t
--sizeof__wuffs_xxhash32__hasher(void) {
--  return sizeof(wuffs_xxhash32__hasher);
-+sizeof__wuffs_xz__decoder(void) {
-+  return sizeof(wuffs_xz__decoder);
- }
- 
- // ---------------- Function Implementations
- 
--// -------- func xxhash32.hasher.get_quirk
-+// -------- func xz.decoder.apply_non_final_filters
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint8_t
-+wuffs_xz__decoder__apply_non_final_filters(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__slice_u8 a_dst_slice) {
-+  return (*self->private_impl.choosy_apply_non_final_filters)(self, a_dst_slice);
-+}
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint8_t
-+wuffs_xz__decoder__apply_non_final_filters__choosy_default(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__slice_u8 a_dst_slice) {
-+  uint32_t v_f = 0;
-+  uint64_t v_i = 0;
-+  uint32_t v_filter_id = 0;
-+  uint32_t v_delta_dist = 0;
-+  uint32_t v_delta_pos = 0;
-+  uint8_t v_c8 = 0;
-+
-+  if (self->private_impl.f_num_non_final_filters <= 0u) {
-+    return 0u;
-+  }
-+  v_f = (self->private_impl.f_num_non_final_filters - 1u);
-+  while (true) {
-+    v_filter_id = (self->private_impl.f_filters[v_f] & 127u);
-+    if (v_filter_id == 3u) {
-+      v_delta_dist = (((self->private_impl.f_filters[v_f] >> 8u) & 255u) + 1u);
-+      v_delta_pos = (self->private_impl.f_filters[v_f] >> 24u);
-+      v_i = 0u;
-+      while (v_i < ((uint64_t)(a_dst_slice.len))) {
-+        v_c8 = a_dst_slice.ptr[v_i];
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic push
-+#pragma GCC diagnostic ignored "-Wconversion"
-+#endif
-+        v_c8 += self->private_data.f_filter_data[v_f][(((uint32_t)(v_delta_dist + v_delta_pos)) & 255u)];
-+#if defined(__GNUC__)
-+#pragma GCC diagnostic pop
-+#endif
-+        self->private_data.f_filter_data[v_f][(v_delta_pos & 255u)] = v_c8;
-+        v_delta_pos -= 1u;
-+        a_dst_slice.ptr[v_i] = v_c8;
-+        v_i += 1u;
-+      }
-+      self->private_impl.f_filters[v_f] &= 65535u;
-+      self->private_impl.f_filters[v_f] |= ((uint32_t)(v_delta_pos << 24u));
-+    }
-+    if (v_f <= 0u) {
-+      break;
-+    }
-+    v_f -= 1u;
-+  }
-+  return 0u;
-+}
-+
-+// -------- func xz.decoder.apply_filter_04_x86
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint8_t
-+wuffs_xz__decoder__apply_filter_04_x86(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__slice_u8 a_dst_slice) {
-+  wuffs_base__slice_u8 v_s = {0};
-+  uint32_t v_p = 0;
-+  uint64_t v_i = 0;
-+  uint64_t v_prev_pos = 0;
-+  uint32_t v_prev_mask = 0;
-+  uint8_t v_c8 = 0;
-+  uint32_t v_src = 0;
-+  uint32_t v_dst = 0;
-+  uint32_t v_bit_num = 0;
-+
-+  v_s = a_dst_slice;
-+  v_p = ((uint32_t)(self->private_impl.f_bcj_pos + 5u));
-+  v_prev_pos = 18446744073709551615u;
-+  v_prev_mask = self->private_impl.f_bcj_x86_prev_mask;
-+  while (((uint64_t)(v_s.len)) >= 5u) {
-+    if (((uint8_t)(v_s.ptr[0u] & 254u)) != 232u) {
-+      v_i += 1u;
-+      v_p += 1u;
-+      v_s = wuffs_base__slice_u8__subslice_i(v_s, 1u);
-+      continue;
-+    }
-+    v_prev_pos = ((uint64_t)(v_i - v_prev_pos));
-+    if (v_prev_pos > 3u) {
-+      v_prev_mask = 0u;
-+    } else if (v_prev_pos > 0u) {
-+      v_prev_mask = (((uint32_t)(v_prev_mask << (v_prev_pos - 1u))) & 7u);
-+      if (v_prev_mask != 0u) {
-+        v_c8 = v_s.ptr[((uint8_t)(4u - WUFFS_XZ__FILTER_04_X86_MASK_TO_BIT_NUM[(v_prev_mask & 7u)]))];
-+        if ( ! WUFFS_XZ__FILTER_04_X86_MASK_TO_ALLOWED_STATUS[(v_prev_mask & 7u)] || (v_c8 == 0u) || (v_c8 == 255u)) {
-+          v_prev_pos = v_i;
-+          v_prev_mask = (((uint32_t)(v_prev_mask << 1u)) | 1u);
-+          v_i += 1u;
-+          v_p += 1u;
-+          v_s = wuffs_base__slice_u8__subslice_i(v_s, 1u);
-+          continue;
-+        }
-+      }
-+    }
-+    v_prev_pos = v_i;
-+    v_c8 = v_s.ptr[4u];
-+    if ((v_c8 != 0u) && (v_c8 != 255u)) {
-+      v_prev_mask = (((uint32_t)(v_prev_mask << 1u)) | 1u);
-+      v_i += 1u;
-+      v_p += 1u;
-+      v_s = wuffs_base__slice_u8__subslice_i(v_s, 1u);
-+      continue;
-+    }
-+    v_src = ((((uint32_t)(v_s.ptr[1u])) << 0u) |
-+        (((uint32_t)(v_s.ptr[2u])) << 8u) |
-+        (((uint32_t)(v_s.ptr[3u])) << 16u) |
-+        (((uint32_t)(v_s.ptr[4u])) << 24u));
-+    while (true) {
-+      v_dst = ((uint32_t)(v_src - v_p));
-+      if (v_prev_mask == 0u) {
-+        break;
-+      }
-+      v_bit_num = ((uint32_t)(WUFFS_XZ__FILTER_04_X86_MASK_TO_BIT_NUM[(v_prev_mask & 7u)]));
-+      v_c8 = ((uint8_t)((v_dst >> (24u - (v_bit_num * 8u)))));
-+      if ((v_c8 != 0u) && (v_c8 != 255u)) {
-+        break;
-+      }
-+      v_src = (v_dst ^ WUFFS_XZ__FILTER_04_X86_MASK_TO_XOR_OPERAND[(v_prev_mask & 7u)]);
-+    }
-+    v_dst &= 33554431u;
-+    v_dst |= ((uint32_t)(0u - (v_dst & 16777216u)));
-+    v_s.ptr[1u] = ((uint8_t)((v_dst >> 0u)));
-+    v_s.ptr[2u] = ((uint8_t)((v_dst >> 8u)));
-+    v_s.ptr[3u] = ((uint8_t)((v_dst >> 16u)));
-+    v_s.ptr[4u] = ((uint8_t)((v_dst >> 24u)));
-+    v_i += 5u;
-+    v_p += 5u;
-+    v_s = wuffs_base__slice_u8__subslice_i(v_s, 5u);
-+  }
-+  v_prev_pos = ((uint64_t)(v_i - v_prev_pos));
-+  if (v_prev_pos > 3u) {
-+    self->private_impl.f_bcj_x86_prev_mask = 0u;
-+  } else if (v_prev_pos > 0u) {
-+    self->private_impl.f_bcj_x86_prev_mask = ((uint32_t)(v_prev_mask << (v_prev_pos - 1u)));
-+  }
-+  self->private_impl.f_bcj_pos = ((uint32_t)(v_p - 5u));
-+  return ((uint8_t)(((uint64_t)(v_s.len))));
-+}
-+
-+// -------- func xz.decoder.apply_filter_05_powerpc
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint8_t
-+wuffs_xz__decoder__apply_filter_05_powerpc(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__slice_u8 a_dst_slice) {
-+  wuffs_base__slice_u8 v_s = {0};
-+  uint32_t v_p = 0;
-+  uint32_t v_x = 0;
-+
-+  v_s = a_dst_slice;
-+  v_p = self->private_impl.f_bcj_pos;
-+  while (((uint64_t)(v_s.len)) >= 4u) {
-+    v_x = ((((uint32_t)(v_s.ptr[0u])) << 24u) |
-+        (((uint32_t)(v_s.ptr[1u])) << 16u) |
-+        (((uint32_t)(v_s.ptr[2u])) << 8u) |
-+        (((uint32_t)(v_s.ptr[3u])) << 0u));
-+    if ((v_x & 4227858435u) == 1207959553u) {
-+      v_x = ((((uint32_t)((v_x & 67108860u) - v_p)) & 67108860u) | 1207959553u);
-+      v_s.ptr[0u] = ((uint8_t)((v_x >> 24u)));
-+      v_s.ptr[1u] = ((uint8_t)((v_x >> 16u)));
-+      v_s.ptr[2u] = ((uint8_t)((v_x >> 8u)));
-+      v_s.ptr[3u] = ((uint8_t)((v_x >> 0u)));
-+    }
-+    v_p += 4u;
-+    v_s = wuffs_base__slice_u8__subslice_i(v_s, 4u);
-+  }
-+  self->private_impl.f_bcj_pos = v_p;
-+  return ((uint8_t)(((uint64_t)(v_s.len))));
-+}
-+
-+// -------- func xz.decoder.apply_filter_06_ia64
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint8_t
-+wuffs_xz__decoder__apply_filter_06_ia64(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__slice_u8 a_dst_slice) {
-+  wuffs_base__slice_u8 v_s = {0};
-+  uint32_t v_p = 0;
-+  uint32_t v_mask = 0;
-+  uint32_t v_slot = 0;
-+  uint32_t v_bit_pos = 0;
-+  uint32_t v_byte_pos = 0;
-+  uint32_t v_bit_res = 0;
-+  uint64_t v_x = 0;
-+  uint32_t v_j = 0;
-+  uint64_t v_norm = 0;
-+  uint32_t v_addr = 0;
-+
-+  v_s = a_dst_slice;
-+  v_p = self->private_impl.f_bcj_pos;
-+  while (((uint64_t)(v_s.len)) >= 16u) {
-+    v_mask = ((uint32_t)(WUFFS_XZ__FILTER_06_IA64_BRANCH_TABLE[((uint8_t)(v_s.ptr[0u] & 31u))]));
-+    v_slot = 0u;
-+    while (true) {
-+      do {
-+        if (((v_mask >> v_slot) & 1u) == 0u) {
-+          break;
-+        }
-+        v_bit_pos = ((v_slot * 41u) + 5u);
-+        v_byte_pos = (v_bit_pos >> 3u);
-+        v_bit_res = (v_bit_pos & 7u);
-+        v_x = 0u;
-+        v_j = 0u;
-+        while (v_j < 6u) {
-+          v_x |= (((uint64_t)(v_s.ptr[(v_j + v_byte_pos)])) << (8u * v_j));
-+          v_j += 1u;
-+        }
-+        v_norm = (v_x >> v_bit_res);
-+        if ((((v_norm >> 37u) & 15u) != 5u) || (((v_norm >> 9u) & 7u) != 0u)) {
-+          break;
-+        }
-+        v_addr = ((uint32_t)(((v_norm >> 13u) & 1048575u)));
-+        v_addr |= (((uint32_t)(((v_norm >> 36u) & 1u))) << 20u);
-+        v_addr <<= 4u;
-+        v_addr -= v_p;
-+        v_addr >>= 4u;
-+        v_norm &= 18446743996400148479u;
-+        v_norm |= (((uint64_t)((v_addr & 1048575u))) << 13u);
-+        v_norm |= (((uint64_t)((v_addr & 1048576u))) << 16u);
-+        v_x &= ((((uint64_t)(1u)) << v_bit_res) - 1u);
-+        v_x |= ((uint64_t)(v_norm << v_bit_res));
-+        v_j = 0u;
-+        while (v_j < 6u) {
-+          v_s.ptr[(v_j + v_byte_pos)] = ((uint8_t)((v_x >> (8u * v_j))));
-+          v_j += 1u;
-+        }
-+      } while (0);
-+      if (v_slot >= 2u) {
-+        break;
-+      }
-+      v_slot += 1u;
-+    }
-+    v_p += 16u;
-+    v_s = wuffs_base__slice_u8__subslice_i(v_s, 16u);
-+  }
-+  self->private_impl.f_bcj_pos = v_p;
-+  return ((uint8_t)(((uint64_t)(v_s.len))));
-+}
-+
-+// -------- func xz.decoder.apply_filter_07_arm
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint8_t
-+wuffs_xz__decoder__apply_filter_07_arm(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__slice_u8 a_dst_slice) {
-+  wuffs_base__slice_u8 v_s = {0};
-+  uint32_t v_p = 0;
-+  uint32_t v_x = 0;
-+
-+  v_s = a_dst_slice;
-+  v_p = ((uint32_t)(self->private_impl.f_bcj_pos + 8u));
-+  while (((uint64_t)(v_s.len)) >= 4u) {
-+    if (v_s.ptr[3u] == 235u) {
-+      v_x = ((((uint32_t)(v_s.ptr[0u])) << 0u) |
-+          (((uint32_t)(v_s.ptr[1u])) << 8u) |
-+          (((uint32_t)(v_s.ptr[2u])) << 16u) |
-+          (((uint32_t)(v_s.ptr[3u])) << 24u));
-+      v_x = (((uint32_t)(((v_x & 16777215u) << 2u) - v_p)) >> 2u);
-+      v_s.ptr[0u] = ((uint8_t)((v_x >> 0u)));
-+      v_s.ptr[1u] = ((uint8_t)((v_x >> 8u)));
-+      v_s.ptr[2u] = ((uint8_t)((v_x >> 16u)));
-+    }
-+    v_p += 4u;
-+    v_s = wuffs_base__slice_u8__subslice_i(v_s, 4u);
-+  }
-+  self->private_impl.f_bcj_pos = ((uint32_t)(v_p - 8u));
-+  return ((uint8_t)(((uint64_t)(v_s.len))));
-+}
-+
-+// -------- func xz.decoder.apply_filter_08_armthumb
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint8_t
-+wuffs_xz__decoder__apply_filter_08_armthumb(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__slice_u8 a_dst_slice) {
-+  wuffs_base__slice_u8 v_s = {0};
-+  uint32_t v_p = 0;
-+  uint32_t v_x = 0;
-+  uint32_t v_y = 0;
-+
-+  v_s = a_dst_slice;
-+  v_p = ((uint32_t)(self->private_impl.f_bcj_pos + 4u));
-+  while (((uint64_t)(v_s.len)) >= 4u) {
-+    v_x = ((((uint32_t)(v_s.ptr[0u])) << 0u) |
-+        (((uint32_t)(v_s.ptr[1u])) << 8u) |
-+        (((uint32_t)(v_s.ptr[2u])) << 16u) |
-+        (((uint32_t)(v_s.ptr[3u])) << 24u));
-+    if ((v_x & 4160813056u) != 4160811008u) {
-+      v_p += 2u;
-+      v_s = wuffs_base__slice_u8__subslice_i(v_s, 2u);
-+      continue;
-+    }
-+    v_y = ((((uint32_t)(((uint8_t)(v_s.ptr[0u] & 255u)))) << 11u) |
-+        (((uint32_t)(((uint8_t)(v_s.ptr[1u] & 7u)))) << 19u) |
-+        (((uint32_t)(((uint8_t)(v_s.ptr[2u] & 255u)))) << 0u) |
-+        (((uint32_t)(((uint8_t)(v_s.ptr[3u] & 7u)))) << 8u));
-+    v_y = (((uint32_t)(((uint32_t)(v_y << 1u)) - v_p)) >> 1u);
-+    v_s.ptr[0u] = ((uint8_t)((v_y >> 11u)));
-+    v_s.ptr[1u] = ((uint8_t)((((v_y >> 19u) & 7u) | 240u)));
-+    v_s.ptr[2u] = ((uint8_t)((v_y >> 0u)));
-+    v_s.ptr[3u] = ((uint8_t)((((v_y >> 8u) & 7u) | 248u)));
-+    v_p += 4u;
-+    v_s = wuffs_base__slice_u8__subslice_i(v_s, 4u);
-+  }
-+  self->private_impl.f_bcj_pos = ((uint32_t)(v_p - 4u));
-+  return ((uint8_t)(((uint64_t)(v_s.len))));
-+}
-+
-+// -------- func xz.decoder.apply_filter_09_sparc
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint8_t
-+wuffs_xz__decoder__apply_filter_09_sparc(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__slice_u8 a_dst_slice) {
-+  wuffs_base__slice_u8 v_s = {0};
-+  uint32_t v_p = 0;
-+  uint32_t v_x = 0;
-+
-+  v_s = a_dst_slice;
-+  v_p = self->private_impl.f_bcj_pos;
-+  while (((uint64_t)(v_s.len)) >= 4u) {
-+    v_x = ((((uint32_t)(v_s.ptr[0u])) << 24u) |
-+        (((uint32_t)(v_s.ptr[1u])) << 16u) |
-+        (((uint32_t)(v_s.ptr[2u])) << 8u) |
-+        (((uint32_t)(v_s.ptr[3u])) << 0u));
-+    if (((v_x >> 22u) == 256u) || ((v_x >> 22u) == 511u)) {
-+      v_x = (((uint32_t)(((uint32_t)(v_x << 2u)) - v_p)) >> 2u);
-+      v_x = ((1073741824u - (v_x & 4194304u)) | 1073741824u | (v_x & 4194303u));
-+      v_s.ptr[0u] = ((uint8_t)((v_x >> 24u)));
-+      v_s.ptr[1u] = ((uint8_t)((v_x >> 16u)));
-+      v_s.ptr[2u] = ((uint8_t)((v_x >> 8u)));
-+      v_s.ptr[3u] = ((uint8_t)((v_x >> 0u)));
-+    }
-+    v_p += 4u;
-+    v_s = wuffs_base__slice_u8__subslice_i(v_s, 4u);
-+  }
-+  self->private_impl.f_bcj_pos = v_p;
-+  return ((uint8_t)(((uint64_t)(v_s.len))));
-+}
-+
-+// -------- func xz.decoder.apply_filter_0a_arm64
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint8_t
-+wuffs_xz__decoder__apply_filter_0a_arm64(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__slice_u8 a_dst_slice) {
-+  wuffs_base__slice_u8 v_s = {0};
-+  uint32_t v_p = 0;
-+  uint32_t v_x = 0;
-+  uint32_t v_y = 0;
-+
-+  v_s = a_dst_slice;
-+  v_p = self->private_impl.f_bcj_pos;
-+  while (((uint64_t)(v_s.len)) >= 4u) {
-+    v_x = ((((uint32_t)(v_s.ptr[0u])) << 0u) |
-+        (((uint32_t)(v_s.ptr[1u])) << 8u) |
-+        (((uint32_t)(v_s.ptr[2u])) << 16u) |
-+        (((uint32_t)(v_s.ptr[3u])) << 24u));
-+    if ((v_x >> 26u) == 37u) {
-+      v_y = ((uint32_t)(v_x - (v_p >> 2u)));
-+      v_x = (2483027968u | (v_y & 67108863u));
-+      v_s.ptr[0u] = ((uint8_t)((v_x >> 0u)));
-+      v_s.ptr[1u] = ((uint8_t)((v_x >> 8u)));
-+      v_s.ptr[2u] = ((uint8_t)((v_x >> 16u)));
-+      v_s.ptr[3u] = ((uint8_t)((v_x >> 24u)));
-+    } else if ((v_x & 2667577344u) == 2415919104u) {
-+      v_y = (((v_x >> 29u) & 3u) | ((v_x >> 3u) & 2097148u));
-+      if ((((uint32_t)(v_y + 131072u)) & 1835008u) == 0u) {
-+        v_y -= (v_p >> 12u);
-+        v_x &= 2415919135u;
-+        v_x |= ((v_y & 3u) << 29u);
-+        v_x |= ((v_y & 262140u) << 3u);
-+        v_x |= (((uint32_t)(0u - (v_y & 131072u))) & 14680064u);
-+        v_s.ptr[0u] = ((uint8_t)((v_x >> 0u)));
-+        v_s.ptr[1u] = ((uint8_t)((v_x >> 8u)));
-+        v_s.ptr[2u] = ((uint8_t)((v_x >> 16u)));
-+        v_s.ptr[3u] = ((uint8_t)((v_x >> 24u)));
-+      }
-+    }
-+    v_p += 4u;
-+    v_s = wuffs_base__slice_u8__subslice_i(v_s, 4u);
-+  }
-+  self->private_impl.f_bcj_pos = v_p;
-+  return ((uint8_t)(((uint64_t)(v_s.len))));
-+}
-+
-+// -------- func xz.decoder.apply_filter_0b_riscv
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+static uint8_t
-+wuffs_xz__decoder__apply_filter_0b_riscv(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__slice_u8 a_dst_slice) {
-+  wuffs_base__slice_u8 v_s = {0};
-+  uint32_t v_p = 0;
-+  uint32_t v_x = 0;
-+  uint32_t v_x27 = 0;
-+  uint32_t v_y = 0;
-+  uint32_t v_addr = 0;
-+
-+  v_s = a_dst_slice;
-+  v_p = self->private_impl.f_bcj_pos;
-+  while (((uint64_t)(v_s.len)) >= 8u) {
-+    if (v_s.ptr[0u] == 239u) {
-+      if (((uint8_t)(v_s.ptr[1u] & 13u)) != 0u) {
-+        v_p += 2u;
-+        v_s = wuffs_base__slice_u8__subslice_i(v_s, 2u);
-+        continue;
-+      }
-+      v_addr = ((((uint32_t)(((uint8_t)(v_s.ptr[1u] & 240u)))) << 13u) | (((uint32_t)(v_s.ptr[2u])) << 9u) | (((uint32_t)(v_s.ptr[3u])) << 1u));
-+      v_addr -= v_p;
-+      v_s.ptr[1u] = ((uint8_t)(((uint8_t)(v_s.ptr[1u] & 15u)) | ((uint8_t)(((v_addr >> 8u) & 240u)))));
-+      v_s.ptr[2u] = ((uint8_t)((((v_addr >> 16u) & 15u) | ((v_addr >> 7u) & 16u) | (((uint32_t)(v_addr << 4u)) & 224u))));
-+      v_s.ptr[3u] = ((uint8_t)((((v_addr >> 4u) & 127u) | ((v_addr >> 13u) & 128u))));
-+      v_p += 4u;
-+      v_s = wuffs_base__slice_u8__subslice_i(v_s, 4u);
-+      continue;
-+    } else if (((uint8_t)(v_s.ptr[0u] & 127u)) == 23u) {
-+      v_x = ((((uint32_t)(v_s.ptr[0u])) << 0u) |
-+          (((uint32_t)(v_s.ptr[1u])) << 8u) |
-+          (((uint32_t)(v_s.ptr[2u])) << 16u) |
-+          (((uint32_t)(v_s.ptr[3u])) << 24u));
-+      if ((v_x & 3712u) != 0u) {
-+        v_y = ((((uint32_t)(v_s.ptr[4u])) << 0u) |
-+            (((uint32_t)(v_s.ptr[5u])) << 8u) |
-+            (((uint32_t)(v_s.ptr[6u])) << 16u) |
-+            (((uint32_t)(v_s.ptr[7u])) << 24u));
-+        if (((((uint32_t)(v_x << 8u)) ^ ((uint32_t)(v_y - 3u))) & 1015811u) != 0u) {
-+          v_p += 6u;
-+          v_s = wuffs_base__slice_u8__subslice_i(v_s, 6u);
-+          continue;
-+        }
-+        v_addr = ((v_x & 4294963200u) | (v_y >> 20u));
-+        v_x = (279u | ((uint32_t)(v_y << 12u)));
-+        v_s.ptr[0u] = ((uint8_t)((v_x >> 0u)));
-+        v_s.ptr[1u] = ((uint8_t)((v_x >> 8u)));
-+        v_s.ptr[2u] = ((uint8_t)((v_x >> 16u)));
-+        v_s.ptr[3u] = ((uint8_t)((v_x >> 24u)));
-+        v_s.ptr[4u] = ((uint8_t)((v_addr >> 0u)));
-+        v_s.ptr[5u] = ((uint8_t)((v_addr >> 8u)));
-+        v_s.ptr[6u] = ((uint8_t)((v_addr >> 16u)));
-+        v_s.ptr[7u] = ((uint8_t)((v_addr >> 24u)));
-+        v_p += 8u;
-+        v_s = wuffs_base__slice_u8__subslice_i(v_s, 8u);
-+        continue;
-+      }
-+      v_x27 = (v_x >> 27u);
-+      if (((uint32_t)(((uint32_t)(v_x - 12567u)) << 18u)) >= (v_x27 & 29u)) {
-+        v_p += 4u;
-+        v_s = wuffs_base__slice_u8__subslice_i(v_s, 4u);
-+        continue;
-+      }
-+      v_addr = ((((uint32_t)(v_s.ptr[4u])) << 24u) |
-+          (((uint32_t)(v_s.ptr[5u])) << 16u) |
-+          (((uint32_t)(v_s.ptr[6u])) << 8u) |
-+          (((uint32_t)(v_s.ptr[7u])) << 0u));
-+      v_addr -= v_p;
-+      v_y = ((v_x >> 12u) | ((uint32_t)(v_addr << 20u)));
-+      v_x = (23u | (v_x27 << 7u) | (((uint32_t)(v_addr + 2048u)) & 4294963200u));
-+      v_s.ptr[0u] = ((uint8_t)((v_x >> 0u)));
-+      v_s.ptr[1u] = ((uint8_t)((v_x >> 8u)));
-+      v_s.ptr[2u] = ((uint8_t)((v_x >> 16u)));
-+      v_s.ptr[3u] = ((uint8_t)((v_x >> 24u)));
-+      v_s.ptr[4u] = ((uint8_t)((v_y >> 0u)));
-+      v_s.ptr[5u] = ((uint8_t)((v_y >> 8u)));
-+      v_s.ptr[6u] = ((uint8_t)((v_y >> 16u)));
-+      v_s.ptr[7u] = ((uint8_t)((v_y >> 24u)));
-+      v_p += 8u;
-+      v_s = wuffs_base__slice_u8__subslice_i(v_s, 8u);
-+      continue;
-+    }
-+    v_p += 2u;
-+    v_s = wuffs_base__slice_u8__subslice_i(v_s, 2u);
-+  }
-+  self->private_impl.f_bcj_pos = v_p;
-+  return ((uint8_t)(((uint64_t)(v_s.len))));
-+}
-+
-+// -------- func xz.decoder.get_quirk
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_xxhash32__hasher__get_quirk(
--    const wuffs_xxhash32__hasher* self,
-+wuffs_xz__decoder__get_quirk(
-+    const wuffs_xz__decoder* self,
-     uint32_t a_key) {
-   if (!self) {
-     return 0;
-@@ -61527,15 +77160,24 @@ wuffs_xxhash32__hasher__get_quirk(
-     return 0;
-   }
- 
-+  if (a_key == 1u) {
-+    if (self->private_impl.f_ignore_checksum) {
-+      return 1u;
-+    }
-+  } else if (a_key == 2021322752u) {
-+    if (self->private_impl.f_standalone_format) {
-+      return 1u;
-+    }
-+  }
-   return 0u;
- }
- 
--// -------- func xxhash32.hasher.set_quirk
-+// -------- func xz.decoder.set_quirk
- 
- WUFFS_BASE__GENERATED_C_CODE
- WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_xxhash32__hasher__set_quirk(
--    wuffs_xxhash32__hasher* self,
-+wuffs_xz__decoder__set_quirk(
-+    wuffs_xz__decoder* self,
-     uint32_t a_key,
-     uint64_t a_value) {
-   if (!self) {
-@@ -61548,747 +77190,1667 @@ wuffs_xxhash32__hasher__set_quirk(
-         : wuffs_base__error__initialize_not_called);
-   }
- 
-+  if (a_key == 1u) {
-+    self->private_impl.f_ignore_checksum = (a_value > 0u);
-+    return wuffs_base__make_status(NULL);
-+  } else if (a_key == 2021322752u) {
-+    self->private_impl.f_standalone_format = (a_value > 0u);
-+    return wuffs_base__make_status(NULL);
-+  }
-   return wuffs_base__make_status(wuffs_base__error__unsupported_option);
- }
- 
--// -------- func xxhash32.hasher.update
-+// -------- func xz.decoder.dst_history_retain_length
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_xxhash32__hasher__update(
--    wuffs_xxhash32__hasher* self,
--    wuffs_base__slice_u8 a_x) {
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__optional_u63
-+wuffs_xz__decoder__dst_history_retain_length(
-+    const wuffs_xz__decoder* self) {
-   if (!self) {
--    return wuffs_base__make_empty_struct();
-+    return wuffs_base__utility__make_optional_u63(false, 0u);
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__make_optional_u63(false, 0u);
-+  }
-+
-+  return wuffs_lzma__decoder__dst_history_retain_length(&self->private_data.f_lzma);
-+}
-+
-+// -------- func xz.decoder.workbuf_len
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
-+wuffs_xz__decoder__workbuf_len(
-+    const wuffs_xz__decoder* self) {
-+  if (!self) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
-+      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
-+    return wuffs_base__utility__empty_range_ii_u64();
-+  }
-+
-+  return wuffs_lzma__decoder__workbuf_len(&self->private_data.f_lzma);
-+}
-+
-+// -------- func xz.decoder.transform_io
-+
-+WUFFS_BASE__GENERATED_C_CODE
-+WUFFS_BASE__MAYBE_STATIC wuffs_base__status
-+wuffs_xz__decoder__transform_io(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  if (!self) {
-+    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
-   }
-   if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_empty_struct();
-+    return wuffs_base__make_status(
-+        (self->private_impl.magic == WUFFS_BASE__DISABLED)
-+        ? wuffs_base__error__disabled_by_previous_error
-+        : wuffs_base__error__initialize_not_called);
-+  }
-+  if (!a_dst || !a_src) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__bad_argument);
-+  }
-+  if ((self->private_impl.active_coroutine != 0) &&
-+      (self->private_impl.active_coroutine != 1)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-+    return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
-+  }
-+  self->private_impl.active_coroutine = 0;
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
-+
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_transform_io;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    while (true) {
-+      {
-+        wuffs_base__status t_0 = wuffs_xz__decoder__do_transform_io(self, a_dst, a_src, a_workbuf);
-+        v_status = t_0;
-+      }
-+      if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) {
-+        status = wuffs_base__make_status(wuffs_xz__error__truncated_input);
-+        goto exit;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
-+    }
-+
-+    ok:
-+    self->private_impl.p_transform_io = 0;
-+    goto exit;
-   }
- 
--  wuffs_base__slice_u8 v_remaining = {0};
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
- 
--  if ((self->private_impl.f_length_modulo_u32 == 0u) &&  ! self->private_impl.f_length_overflows_u32) {
--    self->private_impl.f_v0 = 606290984u;
--    self->private_impl.f_v1 = 2246822519u;
--    self->private_impl.f_v2 = 0u;
--    self->private_impl.f_v3 = 1640531535u;
--  }
--  while (((uint64_t)(a_x.len)) > 0u) {
--    v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0u);
--    if (((uint64_t)(a_x.len)) > 16777216u) {
--      v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 16777216u);
--      a_x = wuffs_base__slice_u8__subslice_j(a_x, 16777216u);
--    }
--    wuffs_xxhash32__hasher__up(self, a_x);
--    a_x = v_remaining;
-+  goto exit;
-+  exit:
-+  if (wuffs_base__status__is_error(&status)) {
-+    self->private_impl.magic = WUFFS_BASE__DISABLED;
-   }
--  return wuffs_base__make_empty_struct();
-+  return status;
- }
- 
--// -------- func xxhash32.hasher.update_u32
-+// -------- func xz.decoder.do_transform_io
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_xxhash32__hasher__update_u32(
--    wuffs_xxhash32__hasher* self,
--    wuffs_base__slice_u8 a_x) {
--  if (!self) {
--    return 0;
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return 0;
--  }
-+static wuffs_base__status
-+wuffs_xz__decoder__do_transform_io(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__io_buffer* a_dst,
-+    wuffs_base__io_buffer* a_src,
-+    wuffs_base__slice_u8 a_workbuf) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  wuffs_xxhash32__hasher__update(self, a_x);
--  return wuffs_xxhash32__hasher__checksum_u32(self);
--}
-+  uint64_t v_header_magic = 0;
-+  uint64_t v_dmark = 0;
-+  uint64_t v_smark = 0;
-+  uint8_t v_i8 = 0;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+  uint32_t v_checksum32_have = 0;
-+  uint32_t v_checksum32_want = 0;
-+  uint64_t v_checksum64_have = 0;
-+  uint64_t v_checksum64_want = 0;
-+  wuffs_base__bitvec256 v_checksum256_have = {0};
-+  uint64_t v_compressed_size = 0;
-+  uint64_t v_uncompressed_size = 0;
-+  uint32_t v_hash = 0;
-+  uint8_t v_c8 = 0;
-+  uint32_t v_c32 = 0;
-+  uint16_t v_footer_magic = 0;
- 
--// -------- func xxhash32.hasher.up
-+  uint8_t* iop_a_dst = NULL;
-+  uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_dst && a_dst->data.ptr) {
-+    io0_a_dst = a_dst->data.ptr;
-+    io1_a_dst = io0_a_dst + a_dst->meta.wi;
-+    iop_a_dst = io1_a_dst;
-+    io2_a_dst = io0_a_dst + a_dst->data.len;
-+    if (a_dst->meta.closed) {
-+      io2_a_dst = iop_a_dst;
-+    }
-+  }
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
- 
--WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_xxhash32__hasher__up(
--    wuffs_xxhash32__hasher* self,
--    wuffs_base__slice_u8 a_x) {
--  uint32_t v_new_lmu = 0;
--  uint32_t v_buf_u32 = 0;
--  uint32_t v_buf_len = 0;
--  uint32_t v_v0 = 0;
--  uint32_t v_v1 = 0;
--  uint32_t v_v2 = 0;
--  uint32_t v_v3 = 0;
--  wuffs_base__slice_u8 v_p = {0};
-+  uint32_t coro_susp_point = self->private_impl.p_do_transform_io;
-+  if (coro_susp_point) {
-+    v_checksum32_have = self->private_data.s_do_transform_io.v_checksum32_have;
-+    v_checksum32_want = self->private_data.s_do_transform_io.v_checksum32_want;
-+    v_checksum256_have = self->private_data.s_do_transform_io.v_checksum256_have;
-+    v_compressed_size = self->private_data.s_do_transform_io.v_compressed_size;
-+    v_uncompressed_size = self->private_data.s_do_transform_io.v_uncompressed_size;
-+  }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--  v_new_lmu = ((uint32_t)(self->private_impl.f_length_modulo_u32 + ((uint32_t)(((uint64_t)(a_x.len))))));
--  self->private_impl.f_length_overflows_u32 = ((v_new_lmu < self->private_impl.f_length_modulo_u32) || self->private_impl.f_length_overflows_u32);
--  self->private_impl.f_length_modulo_u32 = v_new_lmu;
--  while (true) {
--    if (self->private_impl.f_buf_len >= 16u) {
--      v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[0u])) |
--          (((uint32_t)(self->private_impl.f_buf_data[1u])) << 8u) |
--          (((uint32_t)(self->private_impl.f_buf_data[2u])) << 16u) |
--          (((uint32_t)(self->private_impl.f_buf_data[3u])) << 24u));
--      v_v0 = ((uint32_t)(self->private_impl.f_v0 + ((uint32_t)(v_buf_u32 * 2246822519u))));
--      v_v0 = (((uint32_t)(v_v0 << 13u)) | (v_v0 >> 19u));
--      self->private_impl.f_v0 = ((uint32_t)(v_v0 * 2654435761u));
--      v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[4u])) |
--          (((uint32_t)(self->private_impl.f_buf_data[5u])) << 8u) |
--          (((uint32_t)(self->private_impl.f_buf_data[6u])) << 16u) |
--          (((uint32_t)(self->private_impl.f_buf_data[7u])) << 24u));
--      v_v1 = ((uint32_t)(self->private_impl.f_v1 + ((uint32_t)(v_buf_u32 * 2246822519u))));
--      v_v1 = (((uint32_t)(v_v1 << 13u)) | (v_v1 >> 19u));
--      self->private_impl.f_v1 = ((uint32_t)(v_v1 * 2654435761u));
--      v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[8u])) |
--          (((uint32_t)(self->private_impl.f_buf_data[9u])) << 8u) |
--          (((uint32_t)(self->private_impl.f_buf_data[10u])) << 16u) |
--          (((uint32_t)(self->private_impl.f_buf_data[11u])) << 24u));
--      v_v2 = ((uint32_t)(self->private_impl.f_v2 + ((uint32_t)(v_buf_u32 * 2246822519u))));
--      v_v2 = (((uint32_t)(v_v2 << 13u)) | (v_v2 >> 19u));
--      self->private_impl.f_v2 = ((uint32_t)(v_v2 * 2654435761u));
--      v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[12u])) |
--          (((uint32_t)(self->private_impl.f_buf_data[13u])) << 8u) |
--          (((uint32_t)(self->private_impl.f_buf_data[14u])) << 16u) |
--          (((uint32_t)(self->private_impl.f_buf_data[15u])) << 24u));
--      v_v3 = ((uint32_t)(self->private_impl.f_v3 + ((uint32_t)(v_buf_u32 * 2246822519u))));
--      v_v3 = (((uint32_t)(v_v3 << 13u)) | (v_v3 >> 19u));
--      self->private_impl.f_v3 = ((uint32_t)(v_v3 * 2654435761u));
--      self->private_impl.f_buf_len = 0u;
--      break;
--    }
--    if (((uint64_t)(a_x.len)) <= 0u) {
--      return wuffs_base__make_empty_struct();
--    }
--    self->private_impl.f_buf_data[self->private_impl.f_buf_len] = a_x.ptr[0u];
-+    while (true) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        uint64_t t_0;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 6)) {
-+          t_0 = ((uint64_t)(wuffs_base__peek_u48le__no_bounds_check(iop_a_src)));
-+          iop_a_src += 6;
-+        } else {
-+          self->private_data.s_do_transform_io.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+            uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
-+            if (num_bits_0 == 40) {
-+              t_0 = ((uint64_t)(*scratch));
-+              break;
-+            }
-+            num_bits_0 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_0)) << 56;
-+          }
-+        }
-+        v_header_magic = t_0;
-+      }
-+      if (v_header_magic != 388031461373u) {
-+        status = wuffs_base__make_status(wuffs_xz__error__bad_header);
-+        goto exit;
-+      }
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+        uint64_t t_1;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 6)) {
-+          t_1 = ((uint64_t)(wuffs_base__peek_u48le__no_bounds_check(iop_a_src)));
-+          iop_a_src += 6;
-+        } else {
-+          self->private_data.s_do_transform_io.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+            uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
-+            if (num_bits_1 == 40) {
-+              t_1 = ((uint64_t)(*scratch));
-+              break;
-+            }
-+            num_bits_1 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_1)) << 56;
-+          }
-+        }
-+        v_header_magic = t_1;
-+      }
-+      if (v_header_magic == 72400582410240u) {
-+        self->private_impl.f_checksummer = 0u;
-+      } else if (v_header_magic == 60327687946496u) {
-+        self->private_impl.f_checksummer = 1u;
-+      } else if (v_header_magic == 77742513456128u) {
-+        self->private_impl.f_checksummer = 2u;
-+      } else if (v_header_magic == 177077137508864u) {
-+        self->private_impl.f_checksummer = 3u;
-+      } else if ((v_header_magic & 61695u) != 0u) {
-+        status = wuffs_base__make_status(wuffs_xz__error__bad_header);
-+        goto exit;
-+      } else {
-+        v_header_magic = (15u & (v_header_magic >> 8u));
-+        if ((v_header_magic != 0u) &&
-+            (v_header_magic != 1u) &&
-+            (v_header_magic != 4u) &&
-+            (v_header_magic != 10u)) {
-+          status = wuffs_base__make_status(wuffs_xz__error__unsupported_checksum_algorithm);
-+          goto exit;
-+        }
-+        status = wuffs_base__make_status(wuffs_xz__error__bad_checksum);
-+        goto exit;
-+      }
-+      self->private_impl.f_flags = ((uint16_t)(v_header_magic));
-+      self->private_impl.f_num_actual_blocks = 0u;
-+      while (true) {
-+        if (((uint64_t)(io2_a_src - iop_a_src)) <= 0u) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
-+          continue;
-+        } else if (wuffs_base__peek_u8be__no_bounds_check(iop_a_src) == 0u) {
-+          break;
-+        }
-+        self->private_impl.f_num_actual_blocks += 1u;
-+        if ( ! self->private_impl.f_ignore_checksum) {
-+          wuffs_private_impl__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
-+              sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
-+        }
-+        self->private_impl.f_compressed_size_for_index = 4u;
-+        while (true) {
-+          v_smark = ((uint64_t)(iop_a_src - io0_a_src));
-+          {
-+            if (a_src) {
-+              a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+            }
-+            wuffs_base__status t_2 = wuffs_xz__decoder__decode_block_header_with_padding(self, a_src);
-+            v_status = t_2;
-+            if (a_src) {
-+              iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+            }
-+          }
-+          wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_compressed_size_for_index, wuffs_private_impl__io__count_since(v_smark, ((uint64_t)(iop_a_src - io0_a_src))));
-+          if ( ! self->private_impl.f_ignore_checksum) {
-+            v_checksum32_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_private_impl__io__since(v_smark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
-+          }
-+          if (wuffs_base__status__is_ok(&v_status)) {
-+            break;
-+          }
-+          status = v_status;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
-+        }
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+          uint32_t t_3;
-+          if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+            t_3 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+            iop_a_src += 4;
-+          } else {
-+            self->private_data.s_do_transform_io.scratch = 0;
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+            while (true) {
-+              if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                goto suspend;
-+              }
-+              uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+              uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
-+              *scratch <<= 8;
-+              *scratch >>= 8;
-+              *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
-+              if (num_bits_3 == 24) {
-+                t_3 = ((uint32_t)(*scratch));
-+                break;
-+              }
-+              num_bits_3 += 8u;
-+              *scratch |= ((uint64_t)(num_bits_3)) << 56;
-+            }
-+          }
-+          v_checksum32_want = t_3;
-+        }
-+        if (self->private_impl.f_ignore_checksum) {
-+        } else if (v_checksum32_have != v_checksum32_want) {
-+          status = wuffs_base__make_status(wuffs_xz__error__bad_checksum);
-+          goto exit;
-+        } else {
-+          wuffs_private_impl__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
-+              sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
-+          wuffs_private_impl__ignore_status(wuffs_crc64__ecma_hasher__initialize(&self->private_data.f_crc64,
-+              sizeof (wuffs_crc64__ecma_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
-+          wuffs_private_impl__ignore_status(wuffs_sha256__hasher__initialize(&self->private_data.f_sha256,
-+              sizeof (wuffs_sha256__hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
-+        }
-+        v_compressed_size = 0u;
-+        v_uncompressed_size = 0u;
-+        while (true) {
-+          if (((uint64_t)(self->private_impl.f_bcj_undo_index)) > ((uint64_t)(io2_a_dst - iop_a_dst))) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_write);
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
-+            continue;
-+          }
-+          v_dmark = ((uint64_t)(iop_a_dst - io0_a_dst));
-+          v_smark = ((uint64_t)(iop_a_src - io0_a_src));
-+          if (self->private_impl.f_num_non_final_filters == 0u) {
-+            {
-+              if (a_dst) {
-+                a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+              }
-+              if (a_src) {
-+                a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+              }
-+              wuffs_base__status t_4 = wuffs_lzma__decoder__transform_io(&self->private_data.f_lzma, a_dst, a_src, a_workbuf);
-+              v_status = t_4;
-+              if (a_dst) {
-+                iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
-+              }
-+              if (a_src) {
-+                iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+              }
-+            }
-+          } else {
-+            if (self->private_impl.f_bcj_undo_index > 0u) {
-+              wuffs_private_impl__io_writer__copy_from_slice(&iop_a_dst, io2_a_dst,wuffs_base__make_slice_u8(self->private_data.f_filter_data[0u], self->private_impl.f_bcj_undo_index));
-+              self->private_impl.f_bcj_undo_index = 0u;
-+            }
-+            {
-+              uint8_t* o_0_io0_a_dst = io0_a_dst;
-+              uint8_t* o_0_io1_a_dst = io1_a_dst;
-+              io0_a_dst = iop_a_dst;
-+              io1_a_dst = iop_a_dst;
-+              wuffs_base__io_buffer o_0_a_dst;
-+              if (a_dst) {
-+                memcpy(&o_0_a_dst, a_dst, sizeof(*a_dst));
-+                size_t wi0 = a_dst->meta.wi;
-+                a_dst->data.ptr += wi0;
-+                a_dst->data.len -= wi0;
-+                a_dst->meta.ri = 0;
-+                a_dst->meta.wi = 0;
-+                a_dst->meta.pos = wuffs_base__u64__sat_add(a_dst->meta.pos, wi0);
-+              }
-+              {
-+                if (a_dst) {
-+                  a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+                }
-+                if (a_src) {
-+                  a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+                }
-+                wuffs_base__status t_5 = wuffs_lzma__decoder__transform_io(&self->private_data.f_lzma, a_dst, a_src, a_workbuf);
-+                v_status = t_5;
-+                if (a_dst) {
-+                  iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
-+                }
-+                if (a_src) {
-+                  iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+                }
-+              }
-+              if (a_dst) {
-+                memcpy(a_dst, &o_0_a_dst, sizeof(*a_dst));
-+                a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-+                io0_a_dst = o_0_io0_a_dst;
-+                io1_a_dst = o_0_io1_a_dst;
-+              }
-+            }
-+            self->private_impl.f_bcj_undo_index = wuffs_xz__decoder__apply_non_final_filters(self, wuffs_private_impl__io__since(v_dmark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
-+            if ((self->private_impl.f_bcj_undo_index > 0u) &&  ! wuffs_base__status__is_ok(&v_status)) {
-+              v_i8 = ((uint8_t)(self->private_impl.f_bcj_undo_index - 1u));
-+              while (true) {
-+                if ( ! (iop_a_dst > io1_a_dst)) {
-+                  status = wuffs_base__make_status(wuffs_xz__error__internal_error_inconsistent_bcj_filter_state);
-+                  goto exit;
-+                }
-+                self->private_data.f_filter_data[0u][v_i8] = iop_a_dst[-1];
-+                iop_a_dst--;
-+                if (v_i8 <= 0u) {
-+                  break;
-+                }
- #if defined(__GNUC__)
- #pragma GCC diagnostic push
- #pragma GCC diagnostic ignored "-Wconversion"
- #endif
--    self->private_impl.f_buf_len += 1u;
-+                v_i8 -= 1u;
- #if defined(__GNUC__)
- #pragma GCC diagnostic pop
- #endif
--    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
--  }
--  v_buf_len = ((uint32_t)((self->private_impl.f_buf_len & 15u)));
--  v_v0 = self->private_impl.f_v0;
--  v_v1 = self->private_impl.f_v1;
--  v_v2 = self->private_impl.f_v2;
--  v_v3 = self->private_impl.f_v3;
--  {
--    wuffs_base__slice_u8 i_slice_p = a_x;
--    v_p.ptr = i_slice_p.ptr;
--    v_p.len = 16;
--    uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 16) * 16);
--    while (v_p.ptr < i_end0_p) {
--      v_buf_u32 = (((uint32_t)(v_p.ptr[0u])) |
--          (((uint32_t)(v_p.ptr[1u])) << 8u) |
--          (((uint32_t)(v_p.ptr[2u])) << 16u) |
--          (((uint32_t)(v_p.ptr[3u])) << 24u));
--      v_v0 = ((uint32_t)(v_v0 + ((uint32_t)(v_buf_u32 * 2246822519u))));
--      v_v0 = (((uint32_t)(v_v0 << 13u)) | (v_v0 >> 19u));
--      v_v0 = ((uint32_t)(v_v0 * 2654435761u));
--      v_buf_u32 = (((uint32_t)(v_p.ptr[4u])) |
--          (((uint32_t)(v_p.ptr[5u])) << 8u) |
--          (((uint32_t)(v_p.ptr[6u])) << 16u) |
--          (((uint32_t)(v_p.ptr[7u])) << 24u));
--      v_v1 = ((uint32_t)(v_v1 + ((uint32_t)(v_buf_u32 * 2246822519u))));
--      v_v1 = (((uint32_t)(v_v1 << 13u)) | (v_v1 >> 19u));
--      v_v1 = ((uint32_t)(v_v1 * 2654435761u));
--      v_buf_u32 = (((uint32_t)(v_p.ptr[8u])) |
--          (((uint32_t)(v_p.ptr[9u])) << 8u) |
--          (((uint32_t)(v_p.ptr[10u])) << 16u) |
--          (((uint32_t)(v_p.ptr[11u])) << 24u));
--      v_v2 = ((uint32_t)(v_v2 + ((uint32_t)(v_buf_u32 * 2246822519u))));
--      v_v2 = (((uint32_t)(v_v2 << 13u)) | (v_v2 >> 19u));
--      v_v2 = ((uint32_t)(v_v2 * 2654435761u));
--      v_buf_u32 = (((uint32_t)(v_p.ptr[12u])) |
--          (((uint32_t)(v_p.ptr[13u])) << 8u) |
--          (((uint32_t)(v_p.ptr[14u])) << 16u) |
--          (((uint32_t)(v_p.ptr[15u])) << 24u));
--      v_v3 = ((uint32_t)(v_v3 + ((uint32_t)(v_buf_u32 * 2246822519u))));
--      v_v3 = (((uint32_t)(v_v3 << 13u)) | (v_v3 >> 19u));
--      v_v3 = ((uint32_t)(v_v3 * 2654435761u));
--      v_p.ptr += 16;
--    }
--    v_p.len = 1;
--    uint8_t* i_end1_p = i_slice_p.ptr + i_slice_p.len;
--    while (v_p.ptr < i_end1_p) {
--      self->private_impl.f_buf_data[v_buf_len] = v_p.ptr[0u];
--      v_buf_len = ((v_buf_len + 1u) & 15u);
--      v_p.ptr += 1;
-+              }
-+            }
-+          }
-+          v_compressed_size += wuffs_private_impl__io__count_since(v_smark, ((uint64_t)(iop_a_src - io0_a_src)));
-+          v_uncompressed_size += wuffs_private_impl__io__count_since(v_dmark, ((uint64_t)(iop_a_dst - io0_a_dst)));
-+          if (self->private_impl.f_ignore_checksum) {
-+          } else if (self->private_impl.f_checksummer == 1u) {
-+            wuffs_crc32__ieee_hasher__update(&self->private_data.f_crc32, wuffs_private_impl__io__since(v_dmark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
-+          } else if (self->private_impl.f_checksummer == 2u) {
-+            wuffs_crc64__ecma_hasher__update(&self->private_data.f_crc64, wuffs_private_impl__io__since(v_dmark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
-+          } else if (self->private_impl.f_checksummer == 3u) {
-+            wuffs_sha256__hasher__update(&self->private_data.f_sha256, wuffs_private_impl__io__since(v_dmark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
-+          }
-+          if (wuffs_base__status__is_ok(&v_status)) {
-+            break;
-+          }
-+          status = v_status;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
-+        }
-+        if ((self->private_impl.f_block_has_compressed_size && (self->private_impl.f_block_compressed_size != v_compressed_size)) || (self->private_impl.f_block_has_uncompressed_size && (self->private_impl.f_block_uncompressed_size != v_uncompressed_size))) {
-+          status = wuffs_base__make_status(wuffs_xz__error__bad_block_header);
-+          goto exit;
-+        }
-+        wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_compressed_size_for_index, v_compressed_size);
-+        wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_compressed_size_for_index, ((uint64_t)(WUFFS_XZ__CHECKSUM_LENGTH[self->private_impl.f_checksummer])));
-+        self->private_impl.f_verification_have_total_sizes[0u] += self->private_impl.f_compressed_size_for_index;
-+        v_hash = ((uint32_t)((self->private_impl.f_compressed_size_for_index ^ (self->private_impl.f_compressed_size_for_index >> 32u))));
-+        v_hash *= 3432918353u;
-+        v_hash = (((uint32_t)(v_hash << 15u)) | (v_hash >> 17u));
-+        v_hash *= 461845907u;
-+        v_hash ^= self->private_impl.f_verification_have_hashed_sizes[0u];
-+        v_hash = (((uint32_t)(v_hash << 13u)) | (v_hash >> 19u));
-+        self->private_impl.f_verification_have_hashed_sizes[0u] = ((uint32_t)(((uint32_t)(v_hash * 5u)) + 3864292196u));
-+        self->private_impl.f_verification_have_total_sizes[1u] += v_uncompressed_size;
-+        v_hash = ((uint32_t)((v_uncompressed_size ^ (v_uncompressed_size >> 32u))));
-+        v_hash *= 3432918353u;
-+        v_hash = (((uint32_t)(v_hash << 15u)) | (v_hash >> 17u));
-+        v_hash *= 461845907u;
-+        v_hash ^= self->private_impl.f_verification_have_hashed_sizes[1u];
-+        v_hash = (((uint32_t)(v_hash << 13u)) | (v_hash >> 19u));
-+        self->private_impl.f_verification_have_hashed_sizes[1u] = ((uint32_t)(((uint32_t)(v_hash * 5u)) + 3864292196u));
-+        while ((v_compressed_size & 3u) != 0u) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint8_t t_6 = *iop_a_src++;
-+            v_c8 = t_6;
-+          }
-+          if (v_c8 != 0u) {
-+            status = wuffs_base__make_status(wuffs_xz__error__bad_padding);
-+            goto exit;
-+          }
-+          v_compressed_size += 1u;
-+        }
-+        self->private_impl.f_lzma_needs_reset = true;
-+        if (self->private_impl.f_ignore_checksum) {
-+          self->private_data.s_do_transform_io.scratch = ((uint32_t)(WUFFS_XZ__CHECKSUM_LENGTH[self->private_impl.f_checksummer]));
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
-+          if (self->private_data.s_do_transform_io.scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
-+            self->private_data.s_do_transform_io.scratch -= ((uint64_t)(io2_a_src - iop_a_src));
-+            iop_a_src = io2_a_src;
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          iop_a_src += self->private_data.s_do_transform_io.scratch;
-+        } else if (self->private_impl.f_checksummer == 1u) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
-+            uint32_t t_7;
-+            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+              t_7 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+              iop_a_src += 4;
-+            } else {
-+              self->private_data.s_do_transform_io.scratch = 0;
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
-+              while (true) {
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+                uint32_t num_bits_7 = ((uint32_t)(*scratch >> 56));
-+                *scratch <<= 8;
-+                *scratch >>= 8;
-+                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_7;
-+                if (num_bits_7 == 24) {
-+                  t_7 = ((uint32_t)(*scratch));
-+                  break;
-+                }
-+                num_bits_7 += 8u;
-+                *scratch |= ((uint64_t)(num_bits_7)) << 56;
-+              }
-+            }
-+            v_checksum32_want = t_7;
-+          }
-+          v_checksum32_have = wuffs_crc32__ieee_hasher__checksum_u32(&self->private_data.f_crc32);
-+          if (v_checksum32_have != v_checksum32_want) {
-+            status = wuffs_base__make_status(wuffs_xz__error__bad_checksum);
-+            goto exit;
-+          }
-+        } else if (self->private_impl.f_checksummer == 2u) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
-+            uint64_t t_8;
-+            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
-+              t_8 = wuffs_base__peek_u64le__no_bounds_check(iop_a_src);
-+              iop_a_src += 8;
-+            } else {
-+              self->private_data.s_do_transform_io.scratch = 0;
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
-+              while (true) {
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+                uint32_t num_bits_8 = ((uint32_t)(*scratch >> 56));
-+                *scratch <<= 8;
-+                *scratch >>= 8;
-+                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_8;
-+                if (num_bits_8 == 56) {
-+                  t_8 = ((uint64_t)(*scratch));
-+                  break;
-+                }
-+                num_bits_8 += 8u;
-+                *scratch |= ((uint64_t)(num_bits_8)) << 56;
-+              }
-+            }
-+            v_checksum64_want = t_8;
-+          }
-+          v_checksum64_have = wuffs_crc64__ecma_hasher__checksum_u64(&self->private_data.f_crc64);
-+          if (v_checksum64_have != v_checksum64_want) {
-+            status = wuffs_base__make_status(wuffs_xz__error__bad_checksum);
-+            goto exit;
-+          }
-+        } else if (self->private_impl.f_checksummer == 3u) {
-+          v_checksum256_have = wuffs_sha256__hasher__checksum_bitvec256(&self->private_data.f_sha256);
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(17);
-+            uint64_t t_9;
-+            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
-+              t_9 = wuffs_base__peek_u64be__no_bounds_check(iop_a_src);
-+              iop_a_src += 8;
-+            } else {
-+              self->private_data.s_do_transform_io.scratch = 0;
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(18);
-+              while (true) {
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+                uint32_t num_bits_9 = ((uint32_t)(*scratch & 0xFFu));
-+                *scratch >>= 8;
-+                *scratch <<= 8;
-+                *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_9);
-+                if (num_bits_9 == 56) {
-+                  t_9 = ((uint64_t)(*scratch >> 0));
-+                  break;
-+                }
-+                num_bits_9 += 8u;
-+                *scratch |= ((uint64_t)(num_bits_9));
-+              }
-+            }
-+            v_checksum64_want = t_9;
-+          }
-+          if (wuffs_base__bitvec256__get_u64(&v_checksum256_have, 3u) != v_checksum64_want) {
-+            status = wuffs_base__make_status(wuffs_xz__error__bad_checksum);
-+            goto exit;
-+          }
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(19);
-+            uint64_t t_10;
-+            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
-+              t_10 = wuffs_base__peek_u64be__no_bounds_check(iop_a_src);
-+              iop_a_src += 8;
-+            } else {
-+              self->private_data.s_do_transform_io.scratch = 0;
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(20);
-+              while (true) {
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+                uint32_t num_bits_10 = ((uint32_t)(*scratch & 0xFFu));
-+                *scratch >>= 8;
-+                *scratch <<= 8;
-+                *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_10);
-+                if (num_bits_10 == 56) {
-+                  t_10 = ((uint64_t)(*scratch >> 0));
-+                  break;
-+                }
-+                num_bits_10 += 8u;
-+                *scratch |= ((uint64_t)(num_bits_10));
-+              }
-+            }
-+            v_checksum64_want = t_10;
-+          }
-+          if (wuffs_base__bitvec256__get_u64(&v_checksum256_have, 2u) != v_checksum64_want) {
-+            status = wuffs_base__make_status(wuffs_xz__error__bad_checksum);
-+            goto exit;
-+          }
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(21);
-+            uint64_t t_11;
-+            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
-+              t_11 = wuffs_base__peek_u64be__no_bounds_check(iop_a_src);
-+              iop_a_src += 8;
-+            } else {
-+              self->private_data.s_do_transform_io.scratch = 0;
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22);
-+              while (true) {
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+                uint32_t num_bits_11 = ((uint32_t)(*scratch & 0xFFu));
-+                *scratch >>= 8;
-+                *scratch <<= 8;
-+                *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_11);
-+                if (num_bits_11 == 56) {
-+                  t_11 = ((uint64_t)(*scratch >> 0));
-+                  break;
-+                }
-+                num_bits_11 += 8u;
-+                *scratch |= ((uint64_t)(num_bits_11));
-+              }
-+            }
-+            v_checksum64_want = t_11;
-+          }
-+          if (wuffs_base__bitvec256__get_u64(&v_checksum256_have, 1u) != v_checksum64_want) {
-+            status = wuffs_base__make_status(wuffs_xz__error__bad_checksum);
-+            goto exit;
-+          }
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(23);
-+            uint64_t t_12;
-+            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
-+              t_12 = wuffs_base__peek_u64be__no_bounds_check(iop_a_src);
-+              iop_a_src += 8;
-+            } else {
-+              self->private_data.s_do_transform_io.scratch = 0;
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(24);
-+              while (true) {
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+                uint32_t num_bits_12 = ((uint32_t)(*scratch & 0xFFu));
-+                *scratch >>= 8;
-+                *scratch <<= 8;
-+                *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_12);
-+                if (num_bits_12 == 56) {
-+                  t_12 = ((uint64_t)(*scratch >> 0));
-+                  break;
-+                }
-+                num_bits_12 += 8u;
-+                *scratch |= ((uint64_t)(num_bits_12));
-+              }
-+            }
-+            v_checksum64_want = t_12;
-+          }
-+          if (wuffs_base__bitvec256__get_u64(&v_checksum256_have, 0u) != v_checksum64_want) {
-+            status = wuffs_base__make_status(wuffs_xz__error__bad_checksum);
-+            goto exit;
-+          }
-+        }
-+      }
-+      self->private_impl.f_backwards_size = 0u;
-+      if ( ! self->private_impl.f_ignore_checksum) {
-+        wuffs_private_impl__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
-+            sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
-+      }
-+      while (true) {
-+        v_smark = ((uint64_t)(iop_a_src - io0_a_src));
-+        {
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          wuffs_base__status t_13 = wuffs_xz__decoder__verify_index(self, a_src);
-+          v_status = t_13;
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+        }
-+        wuffs_private_impl__u64__sat_add_indirect(&self->private_impl.f_backwards_size, wuffs_private_impl__io__count_since(v_smark, ((uint64_t)(iop_a_src - io0_a_src))));
-+        if ( ! self->private_impl.f_ignore_checksum) {
-+          wuffs_crc32__ieee_hasher__update(&self->private_data.f_crc32, wuffs_private_impl__io__since(v_smark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
-+        }
-+        if (wuffs_base__status__is_ok(&v_status)) {
-+          break;
-+        }
-+        status = v_status;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(25);
-+      }
-+      if ( ! self->private_impl.f_ignore_checksum) {
-+        wuffs_crc32__ieee_hasher__update(&self->private_data.f_crc32, wuffs_base__make_slice_u8(wuffs_base__strip_const_from_u8_ptr(WUFFS_XZ__ZEROES), (3u & ((uint64_t)(0u - (3u & self->private_impl.f_backwards_size))))));
-+      }
-+      while ((self->private_impl.f_backwards_size & 3u) != 0u) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(26);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_14 = *iop_a_src++;
-+          v_c8 = t_14;
-+        }
-+        if (v_c8 != 0u) {
-+          status = wuffs_base__make_status(wuffs_xz__error__bad_index);
-+          goto exit;
-+        }
-+        self->private_impl.f_backwards_size += 1u;
-+      }
-+      self->private_impl.f_backwards_size >>= 2u;
-+      if ((self->private_impl.f_backwards_size == 0u) || (self->private_impl.f_backwards_size > 4294967295u)) {
-+        status = wuffs_base__make_status(wuffs_xz__error__bad_index);
-+        goto exit;
-+      }
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(27);
-+        uint32_t t_15;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+          t_15 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+          iop_a_src += 4;
-+        } else {
-+          self->private_data.s_do_transform_io.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(28);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+            uint32_t num_bits_15 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_15;
-+            if (num_bits_15 == 24) {
-+              t_15 = ((uint32_t)(*scratch));
-+              break;
-+            }
-+            num_bits_15 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_15)) << 56;
-+          }
-+        }
-+        v_checksum32_want = t_15;
-+      }
-+      if (self->private_impl.f_ignore_checksum) {
-+      } else if (v_checksum32_want != wuffs_crc32__ieee_hasher__checksum_u32(&self->private_data.f_crc32)) {
-+        status = wuffs_base__make_status(wuffs_xz__error__bad_checksum);
-+        goto exit;
-+      } else {
-+        wuffs_private_impl__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
-+            sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
-+      }
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(29);
-+        uint32_t t_16;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+          t_16 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+          iop_a_src += 4;
-+        } else {
-+          self->private_data.s_do_transform_io.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(30);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+            uint32_t num_bits_16 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_16;
-+            if (num_bits_16 == 24) {
-+              t_16 = ((uint32_t)(*scratch));
-+              break;
-+            }
-+            num_bits_16 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_16)) << 56;
-+          }
-+        }
-+        v_checksum32_want = t_16;
-+      }
-+      while (true) {
-+        v_smark = ((uint64_t)(iop_a_src - io0_a_src));
-+        {
-+          if (a_src) {
-+            a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+          }
-+          wuffs_base__status t_17 = wuffs_xz__decoder__verify_footer(self, a_src);
-+          v_status = t_17;
-+          if (a_src) {
-+            iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+          }
-+        }
-+        if ( ! self->private_impl.f_ignore_checksum) {
-+          wuffs_crc32__ieee_hasher__update(&self->private_data.f_crc32, wuffs_private_impl__io__since(v_smark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
-+        }
-+        if (wuffs_base__status__is_ok(&v_status)) {
-+          break;
-+        }
-+        status = v_status;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(31);
-+      }
-+      if ( ! self->private_impl.f_ignore_checksum && (v_checksum32_want != wuffs_crc32__ieee_hasher__checksum_u32(&self->private_data.f_crc32))) {
-+        status = wuffs_base__make_status(wuffs_xz__error__bad_checksum);
-+        goto exit;
-+      }
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(32);
-+        uint16_t t_18;
-+        if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+          t_18 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
-+          iop_a_src += 2;
-+        } else {
-+          self->private_data.s_do_transform_io.scratch = 0;
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(33);
-+          while (true) {
-+            if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+              status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+              goto suspend;
-+            }
-+            uint64_t* scratch = &self->private_data.s_do_transform_io.scratch;
-+            uint32_t num_bits_18 = ((uint32_t)(*scratch >> 56));
-+            *scratch <<= 8;
-+            *scratch >>= 8;
-+            *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_18;
-+            if (num_bits_18 == 8) {
-+              t_18 = ((uint16_t)(*scratch));
-+              break;
-+            }
-+            num_bits_18 += 8u;
-+            *scratch |= ((uint64_t)(num_bits_18)) << 56;
-+          }
-+        }
-+        v_footer_magic = t_18;
-+      }
-+      if (v_footer_magic != 23129u) {
-+        status = wuffs_base__make_status(wuffs_xz__error__bad_footer);
-+        goto exit;
-+      }
-+      if ( ! self->private_impl.f_standalone_format) {
-+        break;
-+      }
-+      while (true) {
-+        while (((uint64_t)(io2_a_src - iop_a_src)) < 4u) {
-+          if (a_src && a_src->meta.closed) {
-+            if (((uint64_t)(io2_a_src - iop_a_src)) == 0u) {
-+              goto label__streams__break;
-+            } else {
-+              status = wuffs_base__make_status(wuffs_xz__error__truncated_input);
-+              goto exit;
-+            }
-+          }
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(34);
-+        }
-+        v_c32 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+        if (v_c32 == 1484404733u) {
-+          break;
-+        } else if (v_c32 != 0u) {
-+          status = wuffs_base__make_status(wuffs_xz__error__bad_header_concatenated_stream);
-+          goto exit;
-+        }
-+        iop_a_src += 4u;
-+      }
-+      self->private_impl.f_started_verify_index = false;
-     }
--    v_p.len = 0;
--  }
--  self->private_impl.f_buf_len = ((uint8_t)(v_buf_len));
--  self->private_impl.f_v0 = v_v0;
--  self->private_impl.f_v1 = v_v1;
--  self->private_impl.f_v2 = v_v2;
--  self->private_impl.f_v3 = v_v3;
--  return wuffs_base__make_empty_struct();
--}
--
--// -------- func xxhash32.hasher.checksum_u32
-+    label__streams__break:;
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint32_t
--wuffs_xxhash32__hasher__checksum_u32(
--    const wuffs_xxhash32__hasher* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
-+    ok:
-+    self->private_impl.p_do_transform_io = 0;
-+    goto exit;
-   }
- 
--  uint32_t v_ret = 0;
--  uint32_t v_i = 0;
--  uint32_t v_n = 0;
--  uint32_t v_buf_u32 = 0;
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_do_transform_io = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_do_transform_io.v_checksum32_have = v_checksum32_have;
-+  self->private_data.s_do_transform_io.v_checksum32_want = v_checksum32_want;
-+  self->private_data.s_do_transform_io.v_checksum256_have = v_checksum256_have;
-+  self->private_data.s_do_transform_io.v_compressed_size = v_compressed_size;
-+  self->private_data.s_do_transform_io.v_uncompressed_size = v_uncompressed_size;
- 
--  if ((self->private_impl.f_length_modulo_u32 >= 16u) || self->private_impl.f_length_overflows_u32) {
--    v_ret += (((uint32_t)(self->private_impl.f_v0 << 1u)) | (self->private_impl.f_v0 >> 31u));
--    v_ret += (((uint32_t)(self->private_impl.f_v1 << 7u)) | (self->private_impl.f_v1 >> 25u));
--    v_ret += (((uint32_t)(self->private_impl.f_v2 << 12u)) | (self->private_impl.f_v2 >> 20u));
--    v_ret += (((uint32_t)(self->private_impl.f_v3 << 18u)) | (self->private_impl.f_v3 >> 14u));
--    v_ret += self->private_impl.f_length_modulo_u32;
--  } else {
--    v_ret += 374761393u;
--    v_ret += self->private_impl.f_length_modulo_u32;
--  }
--  v_n = 16u;
--  v_n = wuffs_base__u32__min(v_n, ((uint32_t)(self->private_impl.f_buf_len)));
--  if (4u <= v_n) {
--    v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[0u])) |
--        (((uint32_t)(self->private_impl.f_buf_data[1u])) << 8u) |
--        (((uint32_t)(self->private_impl.f_buf_data[2u])) << 16u) |
--        (((uint32_t)(self->private_impl.f_buf_data[3u])) << 24u));
--    v_ret += ((uint32_t)(v_buf_u32 * 3266489917u));
--    v_ret = (((uint32_t)(v_ret << 17u)) | (v_ret >> 15u));
--    v_ret *= 668265263u;
--    v_i = 4u;
--  }
--  if (8u <= v_n) {
--    v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[4u])) |
--        (((uint32_t)(self->private_impl.f_buf_data[5u])) << 8u) |
--        (((uint32_t)(self->private_impl.f_buf_data[6u])) << 16u) |
--        (((uint32_t)(self->private_impl.f_buf_data[7u])) << 24u));
--    v_ret += ((uint32_t)(v_buf_u32 * 3266489917u));
--    v_ret = (((uint32_t)(v_ret << 17u)) | (v_ret >> 15u));
--    v_ret *= 668265263u;
--    v_i = 8u;
--  }
--  if (12u <= v_n) {
--    v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[8u])) |
--        (((uint32_t)(self->private_impl.f_buf_data[9u])) << 8u) |
--        (((uint32_t)(self->private_impl.f_buf_data[10u])) << 16u) |
--        (((uint32_t)(self->private_impl.f_buf_data[11u])) << 24u));
--    v_ret += ((uint32_t)(v_buf_u32 * 3266489917u));
--    v_ret = (((uint32_t)(v_ret << 17u)) | (v_ret >> 15u));
--    v_ret *= 668265263u;
--    v_i = 12u;
-+  goto exit;
-+  exit:
-+  if (a_dst && a_dst->data.ptr) {
-+    a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
-   }
--  while (v_i < v_n) {
--    v_ret += ((uint32_t)(((uint32_t)(self->private_impl.f_buf_data[v_i])) * 374761393u));
--    v_ret = (((uint32_t)(v_ret << 11u)) | (v_ret >> 21u));
--    v_ret *= 2654435761u;
--    v_i += 1u;
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
--  v_ret ^= (v_ret >> 15u);
--  v_ret *= 2246822519u;
--  v_ret ^= (v_ret >> 13u);
--  v_ret *= 3266489917u;
--  v_ret ^= (v_ret >> 16u);
--  return v_ret;
--}
--
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH32)
--
--#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH64)
--
--// ---------------- Status Codes Implementations
- 
--// ---------------- Private Consts
-+  return status;
-+}
- 
--#define WUFFS_XXHASH64__XXH_PRIME64_1 11400714785074694791
-+// -------- func xz.decoder.decode_block_header_with_padding
- 
--#define WUFFS_XXHASH64__XXH_PRIME64_2 14029467366897019727
-+WUFFS_BASE__GENERATED_C_CODE
-+static wuffs_base__status
-+wuffs_xz__decoder__decode_block_header_with_padding(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--#define WUFFS_XXHASH64__XXH_PRIME64_3 1609587929392839161
-+  uint8_t v_c8 = 0;
-+  uint64_t v_padded_size_have = 0;
-+  uint64_t v_padded_size_want = 0;
-+  uint64_t v_smark = 0;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
- 
--#define WUFFS_XXHASH64__XXH_PRIME64_4 9650029242287828579
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
- 
--#define WUFFS_XXHASH64__XXH_PRIME64_5 2870177450012600261
-+  uint32_t coro_susp_point = self->private_impl.p_decode_block_header_with_padding;
-+  if (coro_susp_point) {
-+    v_padded_size_have = self->private_data.s_decode_block_header_with_padding.v_padded_size_have;
-+    v_padded_size_want = self->private_data.s_decode_block_header_with_padding.v_padded_size_want;
-+  }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--#define WUFFS_XXHASH64__INITIAL_V0 6983438078262162902
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_0 = *iop_a_src++;
-+      v_c8 = t_0;
-+    }
-+    v_padded_size_want = ((uint64_t)((((uint64_t)(v_c8)) * 4u) - 1u));
-+    while (true) {
-+      v_smark = ((uint64_t)(iop_a_src - io0_a_src));
-+      {
-+        if (a_src) {
-+          a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+        }
-+        wuffs_base__status t_1 = wuffs_xz__decoder__decode_block_header_sans_padding(self, a_src);
-+        v_status = t_1;
-+        if (a_src) {
-+          iop_a_src = a_src->data.ptr + a_src->meta.ri;
-+        }
-+      }
-+      wuffs_private_impl__u64__sat_add_indirect(&v_padded_size_have, wuffs_private_impl__io__count_since(v_smark, ((uint64_t)(iop_a_src - io0_a_src))));
-+      if (wuffs_base__status__is_ok(&v_status)) {
-+        break;
-+      }
-+      status = v_status;
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
-+    }
-+    if (v_padded_size_have > v_padded_size_want) {
-+      status = wuffs_base__make_status(wuffs_xz__error__bad_block_header);
-+      goto exit;
-+    }
-+    while (v_padded_size_have < v_padded_size_want) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_2 = *iop_a_src++;
-+        v_c8 = t_2;
-+      }
-+      if (v_c8 != 0u) {
-+        status = wuffs_base__make_status(wuffs_xz__error__bad_block_header);
-+        goto exit;
-+      }
-+      v_padded_size_have += 1u;
-+    }
- 
--#define WUFFS_XXHASH64__INITIAL_V1 14029467366897019727
-+    ok:
-+    self->private_impl.p_decode_block_header_with_padding = 0;
-+    goto exit;
-+  }
- 
--#define WUFFS_XXHASH64__INITIAL_V2 0
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_block_header_with_padding = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_block_header_with_padding.v_padded_size_have = v_padded_size_have;
-+  self->private_data.s_decode_block_header_with_padding.v_padded_size_want = v_padded_size_want;
- 
--#define WUFFS_XXHASH64__INITIAL_V3 7046029288634856825
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-+  }
- 
--// ---------------- Private Initializer Prototypes
-+  return status;
-+}
- 
--// ---------------- Private Function Prototypes
-+// -------- func xz.decoder.decode_block_header_sans_padding
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_xxhash64__hasher__up(
--    wuffs_xxhash64__hasher* self,
--    wuffs_base__slice_u8 a_x);
--
--// ---------------- VTables
--
--const wuffs_base__hasher_u64__func_ptrs
--wuffs_xxhash64__hasher__func_ptrs_for__wuffs_base__hasher_u64 = {
--  (uint64_t(*)(const void*))(&wuffs_xxhash64__hasher__checksum_u64),
--  (uint64_t(*)(const void*,
--      uint32_t))(&wuffs_xxhash64__hasher__get_quirk),
--  (wuffs_base__status(*)(void*,
--      uint32_t,
--      uint64_t))(&wuffs_xxhash64__hasher__set_quirk),
--  (wuffs_base__empty_struct(*)(void*,
--      wuffs_base__slice_u8))(&wuffs_xxhash64__hasher__update),
--  (uint64_t(*)(void*,
--      wuffs_base__slice_u8))(&wuffs_xxhash64__hasher__update_u64),
--};
-+static wuffs_base__status
-+wuffs_xz__decoder__decode_block_header_sans_padding(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--// ---------------- Initializer Implementations
-+  uint8_t v_c8 = 0;
-+  uint32_t v_c32 = 0;
-+  uint32_t v_alignment = 0;
-+  uint8_t v_flags = 0;
-+  uint8_t v_filter_id = 0;
-+  wuffs_base__status v_status = wuffs_base__make_status(NULL);
-+  uint32_t v_shift = 0;
-+  uint32_t v_f = 0;
-+  uint32_t v_k = 0;
- 
--wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
--wuffs_xxhash64__hasher__initialize(
--    wuffs_xxhash64__hasher* self,
--    size_t sizeof_star_self,
--    uint64_t wuffs_version,
--    uint32_t options){
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (sizeof(*self) != sizeof_star_self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-   }
--  if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
--      (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
--    return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
-+
-+  uint32_t coro_susp_point = self->private_impl.p_decode_block_header_sans_padding;
-+  if (coro_susp_point) {
-+    v_flags = self->private_data.s_decode_block_header_sans_padding.v_flags;
-+    v_filter_id = self->private_data.s_decode_block_header_sans_padding.v_filter_id;
-+    v_shift = self->private_data.s_decode_block_header_sans_padding.v_shift;
-+    v_f = self->private_data.s_decode_block_header_sans_padding.v_f;
-   }
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--  if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
--    // The whole point of this if-check is to detect an uninitialized *self.
--    // We disable the warning on GCC. Clang-5.0 does not have this warning.
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic push
--#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
--#endif
--    if (self->private_impl.magic != 0) {
--      return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_0 = *iop_a_src++;
-+      v_flags = t_0;
-     }
--#if !defined(__clang__) && defined(__GNUC__)
--#pragma GCC diagnostic pop
--#endif
--  } else {
--    if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
--      memset(self, 0, sizeof(*self));
--      options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
-+    self->private_impl.f_num_non_final_filters = ((uint32_t)(((uint8_t)(v_flags & 3u))));
-+    if (((uint8_t)(v_flags & 60u)) != 0u) {
-+      status = wuffs_base__make_status(wuffs_xz__error__bad_block_header);
-+      goto exit;
-+    }
-+    self->private_impl.f_block_has_compressed_size = (((uint8_t)(v_flags & 64u)) != 0u);
-+    if (self->private_impl.f_block_has_compressed_size) {
-+      self->private_impl.f_block_compressed_size = 0u;
-+      v_shift = 0u;
-+      while (true) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_1 = *iop_a_src++;
-+          v_c8 = t_1;
-+        }
-+        if (v_shift <= 56u) {
-+          self->private_impl.f_block_compressed_size |= (((uint64_t)(((uint8_t)(v_c8 & 127u)))) << v_shift);
-+          if (v_c8 >= 128u) {
-+            v_shift += 7u;
-+            continue;
-+          } else if ((v_c8 == 0u) && (v_shift > 0u)) {
-+            status = wuffs_base__make_status(wuffs_xz__error__bad_block_header);
-+            goto exit;
-+          }
-+          break;
-+        } else if (v_c8 != 1u) {
-+          status = wuffs_base__make_status(wuffs_xz__error__bad_block_header);
-+          goto exit;
-+        }
-+        self->private_impl.f_block_compressed_size |= (((uint64_t)(1u)) << 63u);
-+        break;
-+      }
-+    }
-+    self->private_impl.f_block_has_uncompressed_size = (((uint8_t)(v_flags & 128u)) != 0u);
-+    if (self->private_impl.f_block_has_uncompressed_size) {
-+      self->private_impl.f_block_uncompressed_size = 0u;
-+      v_shift = 0u;
-+      while (true) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_2 = *iop_a_src++;
-+          v_c8 = t_2;
-+        }
-+        if (v_shift <= 56u) {
-+          self->private_impl.f_block_uncompressed_size |= (((uint64_t)(((uint8_t)(v_c8 & 127u)))) << v_shift);
-+          if (v_c8 >= 128u) {
-+            v_shift += 7u;
-+            continue;
-+          } else if ((v_c8 == 0u) && (v_shift > 0u)) {
-+            status = wuffs_base__make_status(wuffs_xz__error__bad_block_header);
-+            goto exit;
-+          }
-+          break;
-+        } else if (v_c8 != 1u) {
-+          status = wuffs_base__make_status(wuffs_xz__error__bad_block_header);
-+          goto exit;
-+        }
-+        self->private_impl.f_block_uncompressed_size |= (((uint64_t)(1u)) << 63u);
-+        break;
-+      }
-+    }
-+    self->private_impl.f_bcj_x86_prev_mask = 0u;
-+    self->private_impl.choosy_apply_non_final_filters = (
-+        &wuffs_xz__decoder__apply_non_final_filters__choosy_default);
-+    v_f = 0u;
-+    while (v_f < self->private_impl.f_num_non_final_filters) {
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_3 = *iop_a_src++;
-+        v_filter_id = t_3;
-+      }
-+      if (v_filter_id == 33u) {
-+        status = wuffs_base__make_status(wuffs_xz__error__bad_filter);
-+        goto exit;
-+      } else if (v_filter_id == 3u) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_4 = *iop_a_src++;
-+          v_c8 = t_4;
-+        }
-+        if (v_c8 != 1u) {
-+          status = wuffs_base__make_status(wuffs_xz__error__bad_filter);
-+          goto exit;
-+        }
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_5 = *iop_a_src++;
-+          v_c8 = t_5;
-+        }
-+        self->private_impl.f_filters[v_f] = ((((uint32_t)(v_c8)) << 8u) | 3u);
-+        v_k = 0u;
-+        while (v_k < 256u) {
-+          self->private_data.f_filter_data[v_f][v_k] = 0u;
-+          v_k += 1u;
-+        }
-+      } else if ((v_filter_id < 3u) || (11u < v_filter_id)) {
-+        status = wuffs_base__make_status(wuffs_xz__error__unsupported_filter);
-+        goto exit;
-+      } else if (v_f != 0u) {
-+        status = wuffs_base__make_status(wuffs_xz__error__unsupported_filter_combination);
-+        goto exit;
-+      } else {
-+        self->private_impl.f_filters[v_f] = ((uint32_t)(v_filter_id));
-+        if (v_filter_id == 4u) {
-+          self->private_impl.choosy_apply_non_final_filters = (
-+              &wuffs_xz__decoder__apply_filter_04_x86);
-+        } else if (v_filter_id == 5u) {
-+          self->private_impl.choosy_apply_non_final_filters = (
-+              &wuffs_xz__decoder__apply_filter_05_powerpc);
-+        } else if (v_filter_id == 6u) {
-+          self->private_impl.choosy_apply_non_final_filters = (
-+              &wuffs_xz__decoder__apply_filter_06_ia64);
-+        } else if (v_filter_id == 7u) {
-+          self->private_impl.choosy_apply_non_final_filters = (
-+              &wuffs_xz__decoder__apply_filter_07_arm);
-+        } else if (v_filter_id == 8u) {
-+          self->private_impl.choosy_apply_non_final_filters = (
-+              &wuffs_xz__decoder__apply_filter_08_armthumb);
-+        } else if (v_filter_id == 9u) {
-+          self->private_impl.choosy_apply_non_final_filters = (
-+              &wuffs_xz__decoder__apply_filter_09_sparc);
-+        } else if (v_filter_id == 10u) {
-+          self->private_impl.choosy_apply_non_final_filters = (
-+              &wuffs_xz__decoder__apply_filter_0a_arm64);
-+        } else {
-+          self->private_impl.choosy_apply_non_final_filters = (
-+              &wuffs_xz__decoder__apply_filter_0b_riscv);
-+        }
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_6 = *iop_a_src++;
-+          v_c8 = t_6;
-+        }
-+        if (v_c8 == 0u) {
-+          self->private_impl.f_bcj_pos = 0u;
-+        } else if (v_c8 == 4u) {
-+          {
-+            WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
-+            uint32_t t_7;
-+            if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+              t_7 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+              iop_a_src += 4;
-+            } else {
-+              self->private_data.s_decode_block_header_sans_padding.scratch = 0;
-+              WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
-+              while (true) {
-+                if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+                  status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+                  goto suspend;
-+                }
-+                uint64_t* scratch = &self->private_data.s_decode_block_header_sans_padding.scratch;
-+                uint32_t num_bits_7 = ((uint32_t)(*scratch >> 56));
-+                *scratch <<= 8;
-+                *scratch >>= 8;
-+                *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_7;
-+                if (num_bits_7 == 24) {
-+                  t_7 = ((uint32_t)(*scratch));
-+                  break;
-+                }
-+                num_bits_7 += 8u;
-+                *scratch |= ((uint64_t)(num_bits_7)) << 56;
-+              }
-+            }
-+            v_c32 = t_7;
-+          }
-+          v_alignment = ((uint32_t)(WUFFS_XZ__BCJ_OFFSET_ALIGNMENT[v_filter_id]));
-+          if (v_alignment > 0u) {
-+            if ((v_c32 % v_alignment) != 0u) {
-+              status = wuffs_base__make_status(wuffs_xz__error__bad_bcj_offset);
-+              goto exit;
-+            }
-+          }
-+          self->private_impl.f_bcj_pos = v_c32;
-+        } else {
-+          status = wuffs_base__make_status(wuffs_xz__error__unsupported_filter);
-+          goto exit;
-+        }
-+      }
-+      v_f += 1u;
-+    }
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
-+      if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+        status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+        goto suspend;
-+      }
-+      uint8_t t_8 = *iop_a_src++;
-+      v_filter_id = t_8;
-+    }
-+    if (v_filter_id == 33u) {
-+      if (self->private_impl.f_lzma_needs_reset) {
-+        wuffs_private_impl__ignore_status(wuffs_lzma__decoder__initialize(&self->private_data.f_lzma,
-+            sizeof (wuffs_lzma__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
-+      }
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_9 = *iop_a_src++;
-+        v_c8 = t_9;
-+      }
-+      if (v_c8 != 1u) {
-+        status = wuffs_base__make_status(wuffs_xz__error__bad_filter);
-+        goto exit;
-+      }
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_10 = *iop_a_src++;
-+        v_c8 = t_10;
-+      }
-+      v_status = wuffs_lzma__decoder__set_quirk(&self->private_data.f_lzma, 1348001793u, (2u | (((uint64_t)(v_c8)) << 8u)));
-+      if ( ! wuffs_base__status__is_ok(&v_status)) {
-+        status = wuffs_base__make_status(wuffs_xz__error__bad_filter);
-+        goto exit;
-+      }
-+    } else if ((v_filter_id < 3u) || (11u < v_filter_id)) {
-+      status = wuffs_base__make_status(wuffs_xz__error__unsupported_filter);
-+      goto exit;
-     } else {
--      memset(&(self->private_impl), 0, sizeof(self->private_impl));
-+      status = wuffs_base__make_status(wuffs_xz__error__bad_filter);
-+      goto exit;
-     }
--  }
- 
--  self->private_impl.magic = WUFFS_BASE__MAGIC;
--  self->private_impl.vtable_for__wuffs_base__hasher_u64.vtable_name =
--      wuffs_base__hasher_u64__vtable_name;
--  self->private_impl.vtable_for__wuffs_base__hasher_u64.function_pointers =
--      (const void*)(&wuffs_xxhash64__hasher__func_ptrs_for__wuffs_base__hasher_u64);
--  return wuffs_base__make_status(NULL);
--}
--
--wuffs_xxhash64__hasher*
--wuffs_xxhash64__hasher__alloc(void) {
--  wuffs_xxhash64__hasher* x =
--      (wuffs_xxhash64__hasher*)(calloc(sizeof(wuffs_xxhash64__hasher), 1));
--  if (!x) {
--    return NULL;
--  }
--  if (wuffs_xxhash64__hasher__initialize(
--      x, sizeof(wuffs_xxhash64__hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
--    free(x);
--    return NULL;
-+    goto ok;
-+    ok:
-+    self->private_impl.p_decode_block_header_sans_padding = 0;
-+    goto exit;
-   }
--  return x;
--}
--
--size_t
--sizeof__wuffs_xxhash64__hasher(void) {
--  return sizeof(wuffs_xxhash64__hasher);
--}
- 
--// ---------------- Function Implementations
--
--// -------- func xxhash64.hasher.get_quirk
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_decode_block_header_sans_padding = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_decode_block_header_sans_padding.v_flags = v_flags;
-+  self->private_data.s_decode_block_header_sans_padding.v_filter_id = v_filter_id;
-+  self->private_data.s_decode_block_header_sans_padding.v_shift = v_shift;
-+  self->private_data.s_decode_block_header_sans_padding.v_f = v_f;
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_xxhash64__hasher__get_quirk(
--    const wuffs_xxhash64__hasher* self,
--    uint32_t a_key) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
- 
--  return 0u;
-+  return status;
- }
- 
--// -------- func xxhash64.hasher.set_quirk
-+// -------- func xz.decoder.verify_index
- 
- WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__status
--wuffs_xxhash64__hasher__set_quirk(
--    wuffs_xxhash64__hasher* self,
--    uint32_t a_key,
--    uint64_t a_value) {
--  if (!self) {
--    return wuffs_base__make_status(wuffs_base__error__bad_receiver);
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_status(
--        (self->private_impl.magic == WUFFS_BASE__DISABLED)
--        ? wuffs_base__error__disabled_by_previous_error
--        : wuffs_base__error__initialize_not_called);
--  }
--
--  return wuffs_base__make_status(wuffs_base__error__unsupported_option);
--}
-+static wuffs_base__status
-+wuffs_xz__decoder__verify_index(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--// -------- func xxhash64.hasher.update
-+  uint8_t v_c8 = 0;
-+  uint32_t v_shift = 0;
-+  uint32_t v_hash = 0;
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
--wuffs_xxhash64__hasher__update(
--    wuffs_xxhash64__hasher* self,
--    wuffs_base__slice_u8 a_x) {
--  if (!self) {
--    return wuffs_base__make_empty_struct();
--  }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return wuffs_base__make_empty_struct();
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-   }
- 
--  if ((self->private_impl.f_length_modulo_u64 == 0u) &&  ! self->private_impl.f_length_overflows_u64) {
--    self->private_impl.f_v0 = 6983438078262162902u;
--    self->private_impl.f_v1 = 14029467366897019727u;
--    self->private_impl.f_v2 = 0u;
--    self->private_impl.f_v3 = 7046029288634856825u;
-+  uint32_t coro_susp_point = self->private_impl.p_verify_index;
-+  if (coro_susp_point) {
-+    v_shift = self->private_data.s_verify_index.v_shift;
-   }
--  wuffs_xxhash64__hasher__up(self, a_x);
--  return wuffs_base__make_empty_struct();
--}
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
- 
--// -------- func xxhash64.hasher.update_u64
-+    if ( ! self->private_impl.f_started_verify_index) {
-+      self->private_impl.f_started_verify_index = true;
-+      {
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+        if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+          status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+          goto suspend;
-+        }
-+        uint8_t t_0 = *iop_a_src++;
-+        v_c8 = t_0;
-+      }
-+      if (v_c8 != 0u) {
-+        status = wuffs_base__make_status(wuffs_xz__error__bad_index);
-+        goto exit;
-+      }
-+      self->private_impl.f_num_index_blocks = 0u;
-+      v_shift = 0u;
-+      while (true) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_1 = *iop_a_src++;
-+          v_c8 = t_1;
-+        }
-+        if (v_shift <= 56u) {
-+          self->private_impl.f_num_index_blocks |= (((uint64_t)(((uint8_t)(v_c8 & 127u)))) << v_shift);
-+          if (v_c8 >= 128u) {
-+            v_shift += 7u;
-+            continue;
-+          } else if ((v_c8 == 0u) && (v_shift > 0u)) {
-+            status = wuffs_base__make_status(wuffs_xz__error__bad_index);
-+            goto exit;
-+          }
-+          break;
-+        } else if (v_c8 != 1u) {
-+          status = wuffs_base__make_status(wuffs_xz__error__bad_index);
-+          goto exit;
-+        }
-+        self->private_impl.f_num_index_blocks |= (((uint64_t)(1u)) << 63u);
-+        break;
-+      }
-+      if (self->private_impl.f_num_index_blocks != self->private_impl.f_num_actual_blocks) {
-+        status = wuffs_base__make_status(wuffs_xz__error__bad_index);
-+        goto exit;
-+      }
-+    }
-+    while (self->private_impl.f_num_index_blocks > 0u) {
-+      self->private_impl.f_num_index_blocks -= 1u;
-+      self->private_impl.f_index_block_compressed_size = 0u;
-+      v_shift = 0u;
-+      while (true) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_2 = *iop_a_src++;
-+          v_c8 = t_2;
-+        }
-+        if (v_shift <= 56u) {
-+          self->private_impl.f_index_block_compressed_size |= (((uint64_t)(((uint8_t)(v_c8 & 127u)))) << v_shift);
-+          if (v_c8 >= 128u) {
-+            v_shift += 7u;
-+            continue;
-+          } else if ((v_c8 == 0u) && (v_shift > 0u)) {
-+            status = wuffs_base__make_status(wuffs_xz__error__bad_index);
-+            goto exit;
-+          }
-+          break;
-+        } else if (v_c8 != 1u) {
-+          status = wuffs_base__make_status(wuffs_xz__error__bad_index);
-+          goto exit;
-+        }
-+        self->private_impl.f_index_block_compressed_size |= (((uint64_t)(1u)) << 63u);
-+        break;
-+      }
-+      self->private_impl.f_index_block_uncompressed_size = 0u;
-+      v_shift = 0u;
-+      while (true) {
-+        {
-+          WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint8_t t_3 = *iop_a_src++;
-+          v_c8 = t_3;
-+        }
-+        if (v_shift <= 56u) {
-+          self->private_impl.f_index_block_uncompressed_size |= (((uint64_t)(((uint8_t)(v_c8 & 127u)))) << v_shift);
-+          if (v_c8 >= 128u) {
-+            v_shift += 7u;
-+            continue;
-+          } else if ((v_c8 == 0u) && (v_shift > 0u)) {
-+            status = wuffs_base__make_status(wuffs_xz__error__bad_index);
-+            goto exit;
-+          }
-+          break;
-+        } else if (v_c8 != 1u) {
-+          status = wuffs_base__make_status(wuffs_xz__error__bad_index);
-+          goto exit;
-+        }
-+        self->private_impl.f_index_block_uncompressed_size |= (((uint64_t)(1u)) << 63u);
-+        break;
-+      }
-+      self->private_impl.f_verification_want_total_sizes[0u] += self->private_impl.f_index_block_compressed_size;
-+      v_hash = ((uint32_t)((self->private_impl.f_index_block_compressed_size ^ (self->private_impl.f_index_block_compressed_size >> 32u))));
-+      v_hash *= 3432918353u;
-+      v_hash = (((uint32_t)(v_hash << 15u)) | (v_hash >> 17u));
-+      v_hash *= 461845907u;
-+      v_hash ^= self->private_impl.f_verification_want_hashed_sizes[0u];
-+      v_hash = (((uint32_t)(v_hash << 13u)) | (v_hash >> 19u));
-+      self->private_impl.f_verification_want_hashed_sizes[0u] = ((uint32_t)(((uint32_t)(v_hash * 5u)) + 3864292196u));
-+      self->private_impl.f_verification_want_total_sizes[1u] += self->private_impl.f_index_block_uncompressed_size;
-+      v_hash = ((uint32_t)((self->private_impl.f_index_block_uncompressed_size ^ (self->private_impl.f_index_block_uncompressed_size >> 32u))));
-+      v_hash *= 3432918353u;
-+      v_hash = (((uint32_t)(v_hash << 15u)) | (v_hash >> 17u));
-+      v_hash *= 461845907u;
-+      v_hash ^= self->private_impl.f_verification_want_hashed_sizes[1u];
-+      v_hash = (((uint32_t)(v_hash << 13u)) | (v_hash >> 19u));
-+      self->private_impl.f_verification_want_hashed_sizes[1u] = ((uint32_t)(((uint32_t)(v_hash * 5u)) + 3864292196u));
-+    }
-+    if ((self->private_impl.f_verification_have_hashed_sizes[0u] != self->private_impl.f_verification_want_hashed_sizes[0u]) ||
-+        (self->private_impl.f_verification_have_hashed_sizes[1u] != self->private_impl.f_verification_want_hashed_sizes[1u]) ||
-+        (self->private_impl.f_verification_have_total_sizes[0u] != self->private_impl.f_verification_want_total_sizes[0u]) ||
-+        (self->private_impl.f_verification_have_total_sizes[1u] != self->private_impl.f_verification_want_total_sizes[1u])) {
-+      status = wuffs_base__make_status(wuffs_xz__error__bad_index);
-+      goto exit;
-+    }
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_xxhash64__hasher__update_u64(
--    wuffs_xxhash64__hasher* self,
--    wuffs_base__slice_u8 a_x) {
--  if (!self) {
--    return 0;
-+    goto ok;
-+    ok:
-+    self->private_impl.p_verify_index = 0;
-+    goto exit;
-   }
--  if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
--    return 0;
-+
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_verify_index = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
-+  self->private_data.s_verify_index.v_shift = v_shift;
-+
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
- 
--  wuffs_xxhash64__hasher__update(self, a_x);
--  return wuffs_xxhash64__hasher__checksum_u64(self);
-+  return status;
- }
- 
--// -------- func xxhash64.hasher.up
-+// -------- func xz.decoder.verify_footer
- 
- WUFFS_BASE__GENERATED_C_CODE
--static wuffs_base__empty_struct
--wuffs_xxhash64__hasher__up(
--    wuffs_xxhash64__hasher* self,
--    wuffs_base__slice_u8 a_x) {
--  uint64_t v_new_lmu = 0;
--  uint64_t v_buf_u64 = 0;
--  uint32_t v_buf_len = 0;
--  uint64_t v_v0 = 0;
--  uint64_t v_v1 = 0;
--  uint64_t v_v2 = 0;
--  uint64_t v_v3 = 0;
--  wuffs_base__slice_u8 v_p = {0};
-+static wuffs_base__status
-+wuffs_xz__decoder__verify_footer(
-+    wuffs_xz__decoder* self,
-+    wuffs_base__io_buffer* a_src) {
-+  wuffs_base__status status = wuffs_base__make_status(NULL);
- 
--  v_new_lmu = ((uint64_t)(self->private_impl.f_length_modulo_u64 + ((uint64_t)(a_x.len))));
--  self->private_impl.f_length_overflows_u64 = ((v_new_lmu < self->private_impl.f_length_modulo_u64) || self->private_impl.f_length_overflows_u64);
--  self->private_impl.f_length_modulo_u64 = v_new_lmu;
--  while (true) {
--    if (self->private_impl.f_buf_len >= 32u) {
--      v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[0u])) |
--          (((uint64_t)(self->private_impl.f_buf_data[1u])) << 8u) |
--          (((uint64_t)(self->private_impl.f_buf_data[2u])) << 16u) |
--          (((uint64_t)(self->private_impl.f_buf_data[3u])) << 24u) |
--          (((uint64_t)(self->private_impl.f_buf_data[4u])) << 32u) |
--          (((uint64_t)(self->private_impl.f_buf_data[5u])) << 40u) |
--          (((uint64_t)(self->private_impl.f_buf_data[6u])) << 48u) |
--          (((uint64_t)(self->private_impl.f_buf_data[7u])) << 56u));
--      v_v0 = ((uint64_t)(self->private_impl.f_v0 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
--      v_v0 = (((uint64_t)(v_v0 << 31u)) | (v_v0 >> 33u));
--      self->private_impl.f_v0 = ((uint64_t)(v_v0 * 11400714785074694791u));
--      v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[8u])) |
--          (((uint64_t)(self->private_impl.f_buf_data[9u])) << 8u) |
--          (((uint64_t)(self->private_impl.f_buf_data[10u])) << 16u) |
--          (((uint64_t)(self->private_impl.f_buf_data[11u])) << 24u) |
--          (((uint64_t)(self->private_impl.f_buf_data[12u])) << 32u) |
--          (((uint64_t)(self->private_impl.f_buf_data[13u])) << 40u) |
--          (((uint64_t)(self->private_impl.f_buf_data[14u])) << 48u) |
--          (((uint64_t)(self->private_impl.f_buf_data[15u])) << 56u));
--      v_v1 = ((uint64_t)(self->private_impl.f_v1 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
--      v_v1 = (((uint64_t)(v_v1 << 31u)) | (v_v1 >> 33u));
--      self->private_impl.f_v1 = ((uint64_t)(v_v1 * 11400714785074694791u));
--      v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[16u])) |
--          (((uint64_t)(self->private_impl.f_buf_data[17u])) << 8u) |
--          (((uint64_t)(self->private_impl.f_buf_data[18u])) << 16u) |
--          (((uint64_t)(self->private_impl.f_buf_data[19u])) << 24u) |
--          (((uint64_t)(self->private_impl.f_buf_data[20u])) << 32u) |
--          (((uint64_t)(self->private_impl.f_buf_data[21u])) << 40u) |
--          (((uint64_t)(self->private_impl.f_buf_data[22u])) << 48u) |
--          (((uint64_t)(self->private_impl.f_buf_data[23u])) << 56u));
--      v_v2 = ((uint64_t)(self->private_impl.f_v2 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
--      v_v2 = (((uint64_t)(v_v2 << 31u)) | (v_v2 >> 33u));
--      self->private_impl.f_v2 = ((uint64_t)(v_v2 * 11400714785074694791u));
--      v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[24u])) |
--          (((uint64_t)(self->private_impl.f_buf_data[25u])) << 8u) |
--          (((uint64_t)(self->private_impl.f_buf_data[26u])) << 16u) |
--          (((uint64_t)(self->private_impl.f_buf_data[27u])) << 24u) |
--          (((uint64_t)(self->private_impl.f_buf_data[28u])) << 32u) |
--          (((uint64_t)(self->private_impl.f_buf_data[29u])) << 40u) |
--          (((uint64_t)(self->private_impl.f_buf_data[30u])) << 48u) |
--          (((uint64_t)(self->private_impl.f_buf_data[31u])) << 56u));
--      v_v3 = ((uint64_t)(self->private_impl.f_v3 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
--      v_v3 = (((uint64_t)(v_v3 << 31u)) | (v_v3 >> 33u));
--      self->private_impl.f_v3 = ((uint64_t)(v_v3 * 11400714785074694791u));
--      self->private_impl.f_buf_len = 0u;
--      break;
-+  uint32_t v_c32 = 0;
-+
-+  const uint8_t* iop_a_src = NULL;
-+  const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
-+  if (a_src && a_src->data.ptr) {
-+    io0_a_src = a_src->data.ptr;
-+    io1_a_src = io0_a_src + a_src->meta.ri;
-+    iop_a_src = io1_a_src;
-+    io2_a_src = io0_a_src + a_src->meta.wi;
-+  }
-+
-+  uint32_t coro_susp_point = self->private_impl.p_verify_footer;
-+  switch (coro_susp_point) {
-+    WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
-+
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
-+      uint32_t t_0;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
-+        t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
-+        iop_a_src += 4;
-+      } else {
-+        self->private_data.s_verify_footer.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_verify_footer.scratch;
-+          uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
-+          *scratch <<= 8;
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
-+          if (num_bits_0 == 24) {
-+            t_0 = ((uint32_t)(*scratch));
-+            break;
-+          }
-+          num_bits_0 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_0)) << 56;
-+        }
-+      }
-+      v_c32 = t_0;
-     }
--    if (((uint64_t)(a_x.len)) <= 0u) {
--      return wuffs_base__make_empty_struct();
-+    if (v_c32 != ((uint32_t)(self->private_impl.f_backwards_size))) {
-+      status = wuffs_base__make_status(wuffs_xz__error__bad_footer);
-+      goto exit;
-     }
--    self->private_impl.f_buf_data[self->private_impl.f_buf_len] = a_x.ptr[0u];
--    self->private_impl.f_buf_len += 1u;
--    a_x = wuffs_base__slice_u8__subslice_i(a_x, 1u);
--  }
--  v_buf_len = (self->private_impl.f_buf_len & 31u);
--  v_v0 = self->private_impl.f_v0;
--  v_v1 = self->private_impl.f_v1;
--  v_v2 = self->private_impl.f_v2;
--  v_v3 = self->private_impl.f_v3;
--  {
--    wuffs_base__slice_u8 i_slice_p = a_x;
--    v_p.ptr = i_slice_p.ptr;
--    v_p.len = 32;
--    uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32);
--    while (v_p.ptr < i_end0_p) {
--      v_buf_u64 = (((uint64_t)(v_p.ptr[0u])) |
--          (((uint64_t)(v_p.ptr[1u])) << 8u) |
--          (((uint64_t)(v_p.ptr[2u])) << 16u) |
--          (((uint64_t)(v_p.ptr[3u])) << 24u) |
--          (((uint64_t)(v_p.ptr[4u])) << 32u) |
--          (((uint64_t)(v_p.ptr[5u])) << 40u) |
--          (((uint64_t)(v_p.ptr[6u])) << 48u) |
--          (((uint64_t)(v_p.ptr[7u])) << 56u));
--      v_v0 = ((uint64_t)(v_v0 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
--      v_v0 = (((uint64_t)(v_v0 << 31u)) | (v_v0 >> 33u));
--      v_v0 = ((uint64_t)(v_v0 * 11400714785074694791u));
--      v_buf_u64 = (((uint64_t)(v_p.ptr[8u])) |
--          (((uint64_t)(v_p.ptr[9u])) << 8u) |
--          (((uint64_t)(v_p.ptr[10u])) << 16u) |
--          (((uint64_t)(v_p.ptr[11u])) << 24u) |
--          (((uint64_t)(v_p.ptr[12u])) << 32u) |
--          (((uint64_t)(v_p.ptr[13u])) << 40u) |
--          (((uint64_t)(v_p.ptr[14u])) << 48u) |
--          (((uint64_t)(v_p.ptr[15u])) << 56u));
--      v_v1 = ((uint64_t)(v_v1 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
--      v_v1 = (((uint64_t)(v_v1 << 31u)) | (v_v1 >> 33u));
--      v_v1 = ((uint64_t)(v_v1 * 11400714785074694791u));
--      v_buf_u64 = (((uint64_t)(v_p.ptr[16u])) |
--          (((uint64_t)(v_p.ptr[17u])) << 8u) |
--          (((uint64_t)(v_p.ptr[18u])) << 16u) |
--          (((uint64_t)(v_p.ptr[19u])) << 24u) |
--          (((uint64_t)(v_p.ptr[20u])) << 32u) |
--          (((uint64_t)(v_p.ptr[21u])) << 40u) |
--          (((uint64_t)(v_p.ptr[22u])) << 48u) |
--          (((uint64_t)(v_p.ptr[23u])) << 56u));
--      v_v2 = ((uint64_t)(v_v2 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
--      v_v2 = (((uint64_t)(v_v2 << 31u)) | (v_v2 >> 33u));
--      v_v2 = ((uint64_t)(v_v2 * 11400714785074694791u));
--      v_buf_u64 = (((uint64_t)(v_p.ptr[24u])) |
--          (((uint64_t)(v_p.ptr[25u])) << 8u) |
--          (((uint64_t)(v_p.ptr[26u])) << 16u) |
--          (((uint64_t)(v_p.ptr[27u])) << 24u) |
--          (((uint64_t)(v_p.ptr[28u])) << 32u) |
--          (((uint64_t)(v_p.ptr[29u])) << 40u) |
--          (((uint64_t)(v_p.ptr[30u])) << 48u) |
--          (((uint64_t)(v_p.ptr[31u])) << 56u));
--      v_v3 = ((uint64_t)(v_v3 + ((uint64_t)(v_buf_u64 * 14029467366897019727u))));
--      v_v3 = (((uint64_t)(v_v3 << 31u)) | (v_v3 >> 33u));
--      v_v3 = ((uint64_t)(v_v3 * 11400714785074694791u));
--      v_p.ptr += 32;
-+    {
-+      WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
-+      uint32_t t_1;
-+      if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
-+        t_1 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
-+        iop_a_src += 2;
-+      } else {
-+        self->private_data.s_verify_footer.scratch = 0;
-+        WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
-+        while (true) {
-+          if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
-+            status = wuffs_base__make_status(wuffs_base__suspension__short_read);
-+            goto suspend;
-+          }
-+          uint64_t* scratch = &self->private_data.s_verify_footer.scratch;
-+          uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
-+          *scratch <<= 8;
-+          *scratch >>= 8;
-+          *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
-+          if (num_bits_1 == 8) {
-+            t_1 = ((uint32_t)(*scratch));
-+            break;
-+          }
-+          num_bits_1 += 8u;
-+          *scratch |= ((uint64_t)(num_bits_1)) << 56;
-+        }
-+      }
-+      v_c32 = t_1;
-     }
--    v_p.len = 1;
--    uint8_t* i_end1_p = i_slice_p.ptr + i_slice_p.len;
--    while (v_p.ptr < i_end1_p) {
--      self->private_impl.f_buf_data[v_buf_len] = v_p.ptr[0u];
--      v_buf_len = ((v_buf_len + 1u) & 31u);
--      v_p.ptr += 1;
-+    if (v_c32 != ((uint32_t)(self->private_impl.f_flags))) {
-+      status = wuffs_base__make_status(wuffs_xz__error__bad_footer);
-+      goto exit;
-     }
--    v_p.len = 0;
--  }
--  self->private_impl.f_buf_len = v_buf_len;
--  self->private_impl.f_v0 = v_v0;
--  self->private_impl.f_v1 = v_v1;
--  self->private_impl.f_v2 = v_v2;
--  self->private_impl.f_v3 = v_v3;
--  return wuffs_base__make_empty_struct();
--}
--
--// -------- func xxhash64.hasher.checksum_u64
- 
--WUFFS_BASE__GENERATED_C_CODE
--WUFFS_BASE__MAYBE_STATIC uint64_t
--wuffs_xxhash64__hasher__checksum_u64(
--    const wuffs_xxhash64__hasher* self) {
--  if (!self) {
--    return 0;
--  }
--  if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
--      (self->private_impl.magic != WUFFS_BASE__DISABLED)) {
--    return 0;
-+    goto ok;
-+    ok:
-+    self->private_impl.p_verify_footer = 0;
-+    goto exit;
-   }
- 
--  uint64_t v_ret = 0;
--  uint64_t v_v0 = 0;
--  uint64_t v_v1 = 0;
--  uint64_t v_v2 = 0;
--  uint64_t v_v3 = 0;
--  uint32_t v_i = 0;
--  uint32_t v_i8 = 0;
--  uint32_t v_n = 0;
--  uint32_t v_buf_u32 = 0;
--  uint64_t v_buf_u64 = 0;
-+  goto suspend;
-+  suspend:
-+  self->private_impl.p_verify_footer = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
- 
--  if ((self->private_impl.f_length_modulo_u64 >= 32u) || self->private_impl.f_length_overflows_u64) {
--    v_ret += (((uint64_t)(self->private_impl.f_v0 << 1u)) | (self->private_impl.f_v0 >> 63u));
--    v_ret += (((uint64_t)(self->private_impl.f_v1 << 7u)) | (self->private_impl.f_v1 >> 57u));
--    v_ret += (((uint64_t)(self->private_impl.f_v2 << 12u)) | (self->private_impl.f_v2 >> 52u));
--    v_ret += (((uint64_t)(self->private_impl.f_v3 << 18u)) | (self->private_impl.f_v3 >> 46u));
--    v_v0 = ((uint64_t)(self->private_impl.f_v0 * 14029467366897019727u));
--    v_v0 = (((uint64_t)(v_v0 << 31u)) | (v_v0 >> 33u));
--    v_v0 *= 11400714785074694791u;
--    v_v1 = ((uint64_t)(self->private_impl.f_v1 * 14029467366897019727u));
--    v_v1 = (((uint64_t)(v_v1 << 31u)) | (v_v1 >> 33u));
--    v_v1 *= 11400714785074694791u;
--    v_v2 = ((uint64_t)(self->private_impl.f_v2 * 14029467366897019727u));
--    v_v2 = (((uint64_t)(v_v2 << 31u)) | (v_v2 >> 33u));
--    v_v2 *= 11400714785074694791u;
--    v_v3 = ((uint64_t)(self->private_impl.f_v3 * 14029467366897019727u));
--    v_v3 = (((uint64_t)(v_v3 << 31u)) | (v_v3 >> 33u));
--    v_v3 *= 11400714785074694791u;
--    v_ret = ((uint64_t)(((uint64_t)((v_ret ^ v_v0) * 11400714785074694791u)) + 9650029242287828579u));
--    v_ret = ((uint64_t)(((uint64_t)((v_ret ^ v_v1) * 11400714785074694791u)) + 9650029242287828579u));
--    v_ret = ((uint64_t)(((uint64_t)((v_ret ^ v_v2) * 11400714785074694791u)) + 9650029242287828579u));
--    v_ret = ((uint64_t)(((uint64_t)((v_ret ^ v_v3) * 11400714785074694791u)) + 9650029242287828579u));
--    v_ret += self->private_impl.f_length_modulo_u64;
--  } else {
--    v_ret += 2870177450012600261u;
--    v_ret += self->private_impl.f_length_modulo_u64;
--  }
--  v_n = 32u;
--  v_n = wuffs_base__u32__min(v_n, self->private_impl.f_buf_len);
--  if (8u <= v_n) {
--    v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[0u])) |
--        (((uint64_t)(self->private_impl.f_buf_data[1u])) << 8u) |
--        (((uint64_t)(self->private_impl.f_buf_data[2u])) << 16u) |
--        (((uint64_t)(self->private_impl.f_buf_data[3u])) << 24u) |
--        (((uint64_t)(self->private_impl.f_buf_data[4u])) << 32u) |
--        (((uint64_t)(self->private_impl.f_buf_data[5u])) << 40u) |
--        (((uint64_t)(self->private_impl.f_buf_data[6u])) << 48u) |
--        (((uint64_t)(self->private_impl.f_buf_data[7u])) << 56u));
--    v_buf_u64 *= 14029467366897019727u;
--    v_buf_u64 = (((uint64_t)(v_buf_u64 << 31u)) | (v_buf_u64 >> 33u));
--    v_buf_u64 *= 11400714785074694791u;
--    v_ret ^= v_buf_u64;
--    v_ret = (((uint64_t)(v_ret << 27u)) | (v_ret >> 37u));
--    v_ret *= 11400714785074694791u;
--    v_ret += 9650029242287828579u;
--    v_i = 8u;
--  }
--  if (16u <= v_n) {
--    v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[8u])) |
--        (((uint64_t)(self->private_impl.f_buf_data[9u])) << 8u) |
--        (((uint64_t)(self->private_impl.f_buf_data[10u])) << 16u) |
--        (((uint64_t)(self->private_impl.f_buf_data[11u])) << 24u) |
--        (((uint64_t)(self->private_impl.f_buf_data[12u])) << 32u) |
--        (((uint64_t)(self->private_impl.f_buf_data[13u])) << 40u) |
--        (((uint64_t)(self->private_impl.f_buf_data[14u])) << 48u) |
--        (((uint64_t)(self->private_impl.f_buf_data[15u])) << 56u));
--    v_buf_u64 *= 14029467366897019727u;
--    v_buf_u64 = (((uint64_t)(v_buf_u64 << 31u)) | (v_buf_u64 >> 33u));
--    v_buf_u64 *= 11400714785074694791u;
--    v_ret ^= v_buf_u64;
--    v_ret = (((uint64_t)(v_ret << 27u)) | (v_ret >> 37u));
--    v_ret *= 11400714785074694791u;
--    v_ret += 9650029242287828579u;
--    v_i = 16u;
--  }
--  if (24u <= v_n) {
--    v_buf_u64 = (((uint64_t)(self->private_impl.f_buf_data[16u])) |
--        (((uint64_t)(self->private_impl.f_buf_data[17u])) << 8u) |
--        (((uint64_t)(self->private_impl.f_buf_data[18u])) << 16u) |
--        (((uint64_t)(self->private_impl.f_buf_data[19u])) << 24u) |
--        (((uint64_t)(self->private_impl.f_buf_data[20u])) << 32u) |
--        (((uint64_t)(self->private_impl.f_buf_data[21u])) << 40u) |
--        (((uint64_t)(self->private_impl.f_buf_data[22u])) << 48u) |
--        (((uint64_t)(self->private_impl.f_buf_data[23u])) << 56u));
--    v_buf_u64 *= 14029467366897019727u;
--    v_buf_u64 = (((uint64_t)(v_buf_u64 << 31u)) | (v_buf_u64 >> 33u));
--    v_buf_u64 *= 11400714785074694791u;
--    v_ret ^= v_buf_u64;
--    v_ret = (((uint64_t)(v_ret << 27u)) | (v_ret >> 37u));
--    v_ret *= 11400714785074694791u;
--    v_ret += 9650029242287828579u;
--    v_i = 24u;
--  }
--  if ((v_n & 4u) != 0u) {
--    v_i8 = (v_i & 24u);
--    v_buf_u32 = (((uint32_t)(self->private_impl.f_buf_data[(v_i8 + 0u)])) |
--        (((uint32_t)(self->private_impl.f_buf_data[(v_i8 + 1u)])) << 8u) |
--        (((uint32_t)(self->private_impl.f_buf_data[(v_i8 + 2u)])) << 16u) |
--        (((uint32_t)(self->private_impl.f_buf_data[(v_i8 + 3u)])) << 24u));
--    v_ret ^= ((uint64_t)(((uint64_t)(v_buf_u32)) * 11400714785074694791u));
--    v_ret = (((uint64_t)(v_ret << 23u)) | (v_ret >> 41u));
--    v_ret *= 14029467366897019727u;
--    v_ret += 1609587929392839161u;
--    v_i = (v_i8 + 4u);
--  }
--  while (v_i < v_n) {
--    v_ret ^= ((uint64_t)(((uint64_t)(self->private_impl.f_buf_data[v_i])) * 2870177450012600261u));
--    v_ret = (((uint64_t)(v_ret << 11u)) | (v_ret >> 53u));
--    v_ret *= 11400714785074694791u;
--    v_i += 1u;
-+  goto exit;
-+  exit:
-+  if (a_src && a_src->data.ptr) {
-+    a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
-   }
--  v_ret ^= (v_ret >> 33u);
--  v_ret *= 14029467366897019727u;
--  v_ret ^= (v_ret >> 29u);
--  v_ret *= 1609587929392839161u;
--  v_ret ^= (v_ret >> 32u);
--  return ((uint64_t)(v_ret));
-+
-+  return status;
- }
- 
--#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XXHASH64)
-+#endif  // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__XZ)
- 
- #if defined(__cplusplus) && defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
- 
-@@ -62309,16 +78871,12 @@ DynIOBuffer::DynIOBuffer(uint64_t max_incl)
-     : m_buf(wuffs_base__empty_io_buffer()), m_max_incl(max_incl) {}
- 
- DynIOBuffer::~DynIOBuffer() {
--  if (m_buf.data.ptr) {
--    free(m_buf.data.ptr);
--  }
-+  free(m_buf.data.ptr);
- }
- 
- void  //
- DynIOBuffer::drop() {
--  if (m_buf.data.ptr) {
--    free(m_buf.data.ptr);
--  }
-+  free(m_buf.data.ptr);
-   m_buf = wuffs_base__empty_io_buffer();
- }
- 
-@@ -62329,13 +78887,16 @@ DynIOBuffer::grow(uint64_t min_incl) {
-     return ((min_incl == 0) && (m_max_incl == 0))
-                ? DynIOBuffer::GrowResult::OK
-                : DynIOBuffer::GrowResult::FailedMaxInclExceeded;
-+  } else if (n > SIZE_MAX) {
-+    return DynIOBuffer::GrowResult::FailedOutOfMemory;
-   } else if (n > m_buf.data.len) {
--    uint8_t* ptr = static_cast<uint8_t*>(realloc(m_buf.data.ptr, n));
-+    uint8_t* ptr =
-+        static_cast<uint8_t*>(realloc(m_buf.data.ptr, static_cast<size_t>(n)));
-     if (!ptr) {
-       return DynIOBuffer::GrowResult::FailedOutOfMemory;
-     }
-     m_buf.data.ptr = ptr;
--    m_buf.data.len = n;
-+    m_buf.data.len = static_cast<size_t>(n);
-   }
-   return DynIOBuffer::GrowResult::OK;
- }
-@@ -62382,7 +78943,7 @@ Input::BringsItsOwnIOBuffer() {
- FileInput::FileInput(FILE* f) : m_f(f) {}
- 
- std::string  //
--FileInput::CopyIn(IOBuffer* dst, uint64_t history_retain_length) {
-+FileInput::CopyIn(IOBuffer* dst) {
-   if (!m_f) {
-     return "wuffs_aux::sync_io::FileInput: nullptr file";
-   } else if (!dst) {
-@@ -62390,7 +78951,7 @@ FileInput::CopyIn(IOBuffer* dst, uint64_t history_retain_length) {
-   } else if (dst->meta.closed) {
-     return "wuffs_aux::sync_io::FileInput: end of file";
-   } else {
--    dst->compact_retaining(history_retain_length);
-+    dst->compact();
-     size_t n = fread(dst->writer_pointer(), 1, dst->writer_length(), m_f);
-     dst->meta.wi += n;
-     dst->meta.closed = feof(m_f);
-@@ -62418,7 +78979,7 @@ MemoryInput::BringsItsOwnIOBuffer() {
- }
- 
- std::string  //
--MemoryInput::CopyIn(IOBuffer* dst, uint64_t history_retain_length) {
-+MemoryInput::CopyIn(IOBuffer* dst) {
-   if (!dst) {
-     return "wuffs_aux::sync_io::MemoryInput: nullptr IOBuffer";
-   } else if (dst->meta.closed) {
-@@ -62428,7 +78989,7 @@ MemoryInput::CopyIn(IOBuffer* dst, uint64_t history_retain_length) {
-     // to it.
-     return "wuffs_aux::sync_io::MemoryInput: overlapping buffers";
-   } else {
--    dst->compact_retaining(history_retain_length);
-+    dst->compact();
-     size_t nd = dst->writer_length();
-     size_t ns = m_io.reader_length();
-     size_t n = (nd < ns) ? nd : ns;
-@@ -62483,7 +79044,7 @@ AdvanceIOBufferTo(const ErrorMessages& error_messages,
-     if (!input.BringsItsOwnIOBuffer()) {
-       io_buf.compact();
-     }
--    std::string error_message = input.CopyIn(&io_buf, 0);
-+    std::string error_message = input.CopyIn(&io_buf);
-     if (!error_message.empty()) {
-       return error_message;
-     }
-@@ -62566,7 +79127,7 @@ HandleMetadata(
-           } else if (!input.BringsItsOwnIOBuffer()) {
-             io_buf.compact();
-           }
--          std::string error_message = input.CopyIn(&io_buf, 0);
-+          std::string error_message = input.CopyIn(&io_buf);
-           if (!error_message.empty()) {
-             return error_message;
-           }
-@@ -62627,15 +79188,13 @@ DecodeCborCallbacks::Done(DecodeCborResult& result,
-                           sync_io::Input& input,
-                           IOBuffer& buffer) {}
- 
--DecodeCborArgQuirks::DecodeCborArgQuirks(wuffs_base__slice_u32 repr0)
--    : repr(repr0) {}
--
--DecodeCborArgQuirks::DecodeCborArgQuirks(uint32_t* ptr0, size_t len0)
--    : repr(wuffs_base__make_slice_u32(ptr0, len0)) {}
-+DecodeCborArgQuirks::DecodeCborArgQuirks(const QuirkKeyValuePair* ptr0,
-+                                         const size_t len0)
-+    : ptr(ptr0), len(len0) {}
- 
- DecodeCborArgQuirks  //
- DecodeCborArgQuirks::DefaultValue() {
--  return DecodeCborArgQuirks(wuffs_base__empty_slice_u32());
-+  return DecodeCborArgQuirks(nullptr, 0);
- }
- 
- DecodeCborResult  //
-@@ -62664,8 +79223,8 @@ DecodeCbor(DecodeCborCallbacks& callbacks,
-       ret_error_message = "wuffs_aux::DecodeCbor: out of memory";
-       goto done;
-     }
--    for (size_t i = 0; i < quirks.repr.len; i++) {
--      dec->set_quirk(quirks.repr.ptr[i], 1);
-+    for (size_t i = 0; i < quirks.len; i++) {
-+      dec->set_quirk(quirks.ptr[i].first, quirks.ptr[i].second);
-     }
- 
-     // Prepare the wuffs_base__tok_buffer. 256 tokens is 2KiB.
-@@ -62710,14 +79269,14 @@ DecodeCbor(DecodeCborCallbacks& callbacks,
-                 "wuffs_aux::DecodeCbor: internal error: io_buf is closed";
-             goto done;
-           }
--          io_buf->compact_retaining(dec->history_retain_length());
-+          io_buf->compact();
-           if (io_buf->meta.wi >= io_buf->data.len) {
-             ret_error_message =
-                 "wuffs_aux::DecodeCbor: internal error: io_buf is full";
-             goto done;
-           }
-           cursor_index = io_buf->meta.ri;
--          io_error_message = input.CopyIn(io_buf, dec->history_retain_length());
-+          io_error_message = input.CopyIn(io_buf);
-         } else {
-           ret_error_message = tok_status.message();
-           goto done;
-@@ -62796,7 +79355,7 @@ DecodeCbor(DecodeCborCallbacks& callbacks,
-               goto done;
-             }
-             depth++;
--            if (depth > WUFFS_CBOR__DECODER_DEPTH_MAX_INCL) {
-+            if (depth > (int32_t)WUFFS_CBOR__DECODER_DEPTH_MAX_INCL) {
-               ret_error_message =
-                   "wuffs_aux::DecodeCbor: internal error: bad depth";
-               goto done;
-@@ -63052,6 +79611,11 @@ DecodeImageCallbacks::SelectDecoder(uint32_t fourcc,
-     }
- #endif
- 
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__QOI)
-+    case WUFFS_BASE__FOURCC__QOI:
-+      return wuffs_qoi__decoder::alloc_as__wuffs_base__image_decoder();
-+#endif
-+
- #if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA)
-     case WUFFS_BASE__FOURCC__TGA:
-       return wuffs_tga__decoder::alloc_as__wuffs_base__image_decoder();
-@@ -63061,6 +79625,11 @@ DecodeImageCallbacks::SelectDecoder(uint32_t fourcc,
-     case WUFFS_BASE__FOURCC__WBMP:
-       return wuffs_wbmp__decoder::alloc_as__wuffs_base__image_decoder();
- #endif
-+
-+#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WEBP)
-+    case WUFFS_BASE__FOURCC__WEBP:
-+      return wuffs_webp__decoder::alloc_as__wuffs_base__image_decoder();
-+#endif
-   }
- 
-   return wuffs_base__image_decoder::unique_ptr(nullptr);
-@@ -63091,7 +79660,7 @@ DecodeImageCallbacks::AllocPixbuf(const wuffs_base__image_config& image_config,
-     return AllocPixbufResult(DecodeImage_UnsupportedPixelConfiguration);
-   }
-   void* ptr =
--      allow_uninitialized_memory ? malloc((size_t)len) : calloc((size_t)len, 1);
-+      allow_uninitialized_memory ? malloc((size_t)len) : calloc(1, (size_t)len);
-   if (!ptr) {
-     return AllocPixbufResult(DecodeImage_OutOfMemory);
-   }
-@@ -63116,7 +79685,7 @@ DecodeImageCallbacks::AllocWorkbuf(wuffs_base__range_ii_u64 len_range,
-     return AllocWorkbufResult(DecodeImage_OutOfMemory);
-   }
-   void* ptr =
--      allow_uninitialized_memory ? malloc((size_t)len) : calloc((size_t)len, 1);
-+      allow_uninitialized_memory ? malloc((size_t)len) : calloc(1, (size_t)len);
-   if (!ptr) {
-     return AllocWorkbufResult(DecodeImage_OutOfMemory);
-   }
-@@ -63153,15 +79722,13 @@ const char DecodeImage_UnsupportedPixelConfiguration[] =  //
- const char DecodeImage_UnsupportedPixelFormat[] =  //
-     "wuffs_aux::DecodeImage: unsupported pixel format";
- 
--DecodeImageArgQuirks::DecodeImageArgQuirks(wuffs_base__slice_u32 repr0)
--    : repr(repr0) {}
--
--DecodeImageArgQuirks::DecodeImageArgQuirks(uint32_t* ptr0, size_t len0)
--    : repr(wuffs_base__make_slice_u32(ptr0, len0)) {}
-+DecodeImageArgQuirks::DecodeImageArgQuirks(const QuirkKeyValuePair* ptr0,
-+                                           const size_t len0)
-+    : ptr(ptr0), len(len0) {}
- 
- DecodeImageArgQuirks  //
- DecodeImageArgQuirks::DefaultValue() {
--  return DecodeImageArgQuirks(wuffs_base__empty_slice_u32());
-+  return DecodeImageArgQuirks(nullptr, 0);
- }
- 
- DecodeImageArgFlags::DecodeImageArgFlags(uint64_t repr0) : repr(repr0) {}
-@@ -63259,7 +79826,8 @@ DecodeImage0(wuffs_base__image_decoder::unique_ptr& image_decoder,
-              DecodeImageCallbacks& callbacks,
-              sync_io::Input& input,
-              wuffs_base__io_buffer& io_buf,
--             wuffs_base__slice_u32 quirks,
-+             const QuirkKeyValuePair* quirks_ptr,
-+             const size_t quirks_len,
-              uint64_t flags,
-              wuffs_base__pixel_blend pixel_blend,
-              wuffs_base__color_u32_argb_premul background_color,
-@@ -63301,7 +79869,7 @@ redirect:
-           fourcc = 0;
-           break;
-         }
--        std::string error_message = input.CopyIn(&io_buf, 0);
-+        std::string error_message = input.CopyIn(&io_buf);
-         if (!error_message.empty()) {
-           return DecodeImageResult(std::move(error_message));
-         }
-@@ -63342,8 +79910,8 @@ redirect:
-     }
- 
-     // Apply quirks.
--    for (size_t i = 0; i < quirks.len; i++) {
--      image_decoder->set_quirk(quirks.ptr[i], 1);
-+    for (size_t i = 0; i < quirks_len; i++) {
-+      image_decoder->set_quirk(quirks_ptr[i].first, quirks_ptr[i].second);
-     }
- 
-     // Apply flags.
-@@ -63397,8 +79965,7 @@ redirect:
-       } else if (io_buf.meta.closed) {
-         return DecodeImageResult(DecodeImage_UnexpectedEndOfFile);
-       } else {
--        std::string error_message =
--            input.CopyIn(&io_buf, image_decoder->history_retain_length());
-+        std::string error_message = input.CopyIn(&io_buf);
-         if (!error_message.empty()) {
-           return DecodeImageResult(std::move(error_message));
-         }
-@@ -63480,8 +80047,7 @@ redirect:
-     } else if (io_buf.meta.closed) {
-       return DecodeImageResult(DecodeImage_UnexpectedEndOfFile);
-     } else {
--      std::string error_message =
--          input.CopyIn(&io_buf, image_decoder->history_retain_length());
-+      std::string error_message = input.CopyIn(&io_buf);
-       if (!error_message.empty()) {
-         return DecodeImageResult(std::move(error_message));
-       }
-@@ -63510,8 +80076,7 @@ redirect:
-       message = DecodeImage_UnexpectedEndOfFile;
-       break;
-     } else {
--      std::string error_message =
--          input.CopyIn(&io_buf, image_decoder->history_retain_length());
-+      std::string error_message = input.CopyIn(&io_buf);
-       if (!error_message.empty()) {
-         message = std::move(error_message);
-         break;
-@@ -63539,8 +80104,7 @@ redirect:
-       } else if (io_buf.meta.closed) {
-         return DecodeImageResult(DecodeImage_UnexpectedEndOfFile);
-       } else {
--        std::string error_message =
--            input.CopyIn(&io_buf, image_decoder->history_retain_length());
-+        std::string error_message = input.CopyIn(&io_buf);
-         if (!error_message.empty()) {
-           return DecodeImageResult(std::move(error_message));
-         }
-@@ -63574,10 +80138,10 @@ DecodeImage(DecodeImageCallbacks& callbacks,
-   }
- 
-   wuffs_base__image_decoder::unique_ptr image_decoder(nullptr);
--  DecodeImageResult result =
--      DecodeImage0(image_decoder, callbacks, input, *io_buf, quirks.repr,
--                   flags.repr, pixel_blend.repr, background_color.repr,
--                   max_incl_dimension.repr, max_incl_metadata_length.repr);
-+  DecodeImageResult result = DecodeImage0(
-+      image_decoder, callbacks, input, *io_buf, quirks.ptr, quirks.len,
-+      flags.repr, pixel_blend.repr, background_color.repr,
-+      max_incl_dimension.repr, max_incl_metadata_length.repr);
-   callbacks.Done(result, input, *io_buf, std::move(image_decoder));
-   return result;
- }
-@@ -63612,15 +80176,13 @@ const char DecodeJson_BadJsonPointer[] =  //
- const char DecodeJson_NoMatch[] =  //
-     "wuffs_aux::DecodeJson: no match";
- 
--DecodeJsonArgQuirks::DecodeJsonArgQuirks(wuffs_base__slice_u32 repr0)
--    : repr(repr0) {}
--
--DecodeJsonArgQuirks::DecodeJsonArgQuirks(uint32_t* ptr0, size_t len0)
--    : repr(wuffs_base__make_slice_u32(ptr0, len0)) {}
-+DecodeJsonArgQuirks::DecodeJsonArgQuirks(const QuirkKeyValuePair* ptr0,
-+                                         const size_t len0)
-+    : ptr(ptr0), len(len0) {}
- 
- DecodeJsonArgQuirks  //
- DecodeJsonArgQuirks::DefaultValue() {
--  return DecodeJsonArgQuirks(wuffs_base__empty_slice_u32());
-+  return DecodeJsonArgQuirks(nullptr, 0);
- }
- 
- DecodeJsonArgJsonPointer::DecodeJsonArgJsonPointer(std::string repr0)
-@@ -63633,58 +80195,58 @@ DecodeJsonArgJsonPointer::DefaultValue() {
- 
- // --------
- 
--#define WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN                           \
--  while (tok_buf.meta.ri >= tok_buf.meta.wi) {                               \
--    if (tok_status.repr == nullptr) {                                        \
--      goto done;                                                             \
--    } else if (tok_status.repr == wuffs_base__suspension__short_write) {     \
--      tok_buf.compact();                                                     \
--    } else if (tok_status.repr == wuffs_base__suspension__short_read) {      \
--      if (!io_error_message.empty()) {                                       \
--        ret_error_message = std::move(io_error_message);                     \
--        goto done;                                                           \
--      } else if (cursor_index != io_buf->meta.ri) {                          \
--        ret_error_message =                                                  \
--            "wuffs_aux::DecodeJson: internal error: bad cursor_index";       \
--        goto done;                                                           \
--      } else if (io_buf->meta.closed) {                                      \
--        ret_error_message =                                                  \
--            "wuffs_aux::DecodeJson: internal error: io_buf is closed";       \
--        goto done;                                                           \
--      }                                                                      \
--      io_buf->compact_retaining(dec->history_retain_length());               \
--      if (io_buf->meta.wi >= io_buf->data.len) {                             \
--        ret_error_message =                                                  \
--            "wuffs_aux::DecodeJson: internal error: io_buf is full";         \
--        goto done;                                                           \
--      }                                                                      \
--      cursor_index = io_buf->meta.ri;                                        \
--      io_error_message = input.CopyIn(io_buf, dec->history_retain_length()); \
--    } else {                                                                 \
--      ret_error_message = tok_status.message();                              \
--      goto done;                                                             \
--    }                                                                        \
--    tok_status =                                                             \
--        dec->decode_tokens(&tok_buf, io_buf, wuffs_base__empty_slice_u8());  \
--    if ((tok_buf.meta.ri > tok_buf.meta.wi) ||                               \
--        (tok_buf.meta.wi > tok_buf.data.len) ||                              \
--        (io_buf->meta.ri > io_buf->meta.wi) ||                               \
--        (io_buf->meta.wi > io_buf->data.len)) {                              \
--      ret_error_message =                                                    \
--          "wuffs_aux::DecodeJson: internal error: bad buffer indexes";       \
--      goto done;                                                             \
--    }                                                                        \
--  }                                                                          \
--  wuffs_base__token token = tok_buf.data.ptr[tok_buf.meta.ri++];             \
--  uint64_t token_len = token.length();                                       \
--  if ((io_buf->meta.ri < cursor_index) ||                                    \
--      ((io_buf->meta.ri - cursor_index) < token_len)) {                      \
--    ret_error_message =                                                      \
--        "wuffs_aux::DecodeJson: internal error: bad token indexes";          \
--    goto done;                                                               \
--  }                                                                          \
--  uint8_t* token_ptr = io_buf->data.ptr + cursor_index;                      \
--  (void)(token_ptr);                                                         \
-+#define WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN                          \
-+  while (tok_buf.meta.ri >= tok_buf.meta.wi) {                              \
-+    if (tok_status.repr == nullptr) {                                       \
-+      goto done;                                                            \
-+    } else if (tok_status.repr == wuffs_base__suspension__short_write) {    \
-+      tok_buf.compact();                                                    \
-+    } else if (tok_status.repr == wuffs_base__suspension__short_read) {     \
-+      if (!io_error_message.empty()) {                                      \
-+        ret_error_message = std::move(io_error_message);                    \
-+        goto done;                                                          \
-+      } else if (cursor_index != io_buf->meta.ri) {                         \
-+        ret_error_message =                                                 \
-+            "wuffs_aux::DecodeJson: internal error: bad cursor_index";      \
-+        goto done;                                                          \
-+      } else if (io_buf->meta.closed) {                                     \
-+        ret_error_message =                                                 \
-+            "wuffs_aux::DecodeJson: internal error: io_buf is closed";      \
-+        goto done;                                                          \
-+      }                                                                     \
-+      io_buf->compact();                                                    \
-+      if (io_buf->meta.wi >= io_buf->data.len) {                            \
-+        ret_error_message =                                                 \
-+            "wuffs_aux::DecodeJson: internal error: io_buf is full";        \
-+        goto done;                                                          \
-+      }                                                                     \
-+      cursor_index = io_buf->meta.ri;                                       \
-+      io_error_message = input.CopyIn(io_buf);                              \
-+    } else {                                                                \
-+      ret_error_message = tok_status.message();                             \
-+      goto done;                                                            \
-+    }                                                                       \
-+    tok_status =                                                            \
-+        dec->decode_tokens(&tok_buf, io_buf, wuffs_base__empty_slice_u8()); \
-+    if ((tok_buf.meta.ri > tok_buf.meta.wi) ||                              \
-+        (tok_buf.meta.wi > tok_buf.data.len) ||                             \
-+        (io_buf->meta.ri > io_buf->meta.wi) ||                              \
-+        (io_buf->meta.wi > io_buf->data.len)) {                             \
-+      ret_error_message =                                                   \
-+          "wuffs_aux::DecodeJson: internal error: bad buffer indexes";      \
-+      goto done;                                                            \
-+    }                                                                       \
-+  }                                                                         \
-+  wuffs_base__token token = tok_buf.data.ptr[tok_buf.meta.ri++];            \
-+  uint64_t token_len = token.length();                                      \
-+  if ((io_buf->meta.ri < cursor_index) ||                                   \
-+      ((io_buf->meta.ri - cursor_index) < token_len)) {                     \
-+    ret_error_message =                                                     \
-+        "wuffs_aux::DecodeJson: internal error: bad token indexes";         \
-+    goto done;                                                              \
-+  }                                                                         \
-+  uint8_t* token_ptr = io_buf->data.ptr + cursor_index;                     \
-+  (void)(token_ptr);                                                        \
-   cursor_index += static_cast<size_t>(token_len)
- 
- // --------
-@@ -63965,11 +80527,11 @@ DecodeJson(DecodeJsonCallbacks& callbacks,
-       goto done;
-     }
-     bool allow_tilde_n_tilde_r_tilde_t = false;
--    for (size_t i = 0; i < quirks.repr.len; i++) {
--      dec->set_quirk(quirks.repr.ptr[i], 1);
--      if (quirks.repr.ptr[i] ==
-+    for (size_t i = 0; i < quirks.len; i++) {
-+      dec->set_quirk(quirks.ptr[i].first, quirks.ptr[i].second);
-+      if (quirks.ptr[i].first ==
-           WUFFS_JSON__QUIRK_JSON_POINTER_ALLOW_TILDE_N_TILDE_R_TILDE_T) {
--        allow_tilde_n_tilde_r_tilde_t = true;
-+        allow_tilde_n_tilde_r_tilde_t = (quirks.ptr[i].second != 0);
-       }
-     }
- 
-@@ -64025,7 +80587,7 @@ DecodeJson(DecodeJsonCallbacks& callbacks,
-               goto done;
-             }
-             depth++;
--            if (depth > WUFFS_JSON__DECODER_DEPTH_MAX_INCL) {
-+            if (depth > (int32_t)WUFFS_JSON__DECODER_DEPTH_MAX_INCL) {
-               ret_error_message =
-                   "wuffs_aux::DecodeJson: internal error: bad depth";
-               goto done;
--- 
-2.39.2
-
diff --git a/patches/coreboot-dasharo-unreleased/0002-lib_jpeg-avoidcalling-malloc-and-free.patch b/patches/coreboot-dasharo-unreleased/0002-lib_jpeg-avoidcalling-malloc-and-free.patch
deleted file mode 100644
index fa131062..00000000
--- a/patches/coreboot-dasharo-unreleased/0002-lib_jpeg-avoidcalling-malloc-and-free.patch
+++ /dev/null
@@ -1,91 +0,0 @@
-From efad423f8472c1b9c130842e3d92625500f82d5d Mon Sep 17 00:00:00 2001
-From: Nigel Tao <nigeltao@golang.org>
-Date: Tue, 13 Aug 2024 22:29:21 +1000
-Subject: [PATCH] lib/jpeg: avoid calling malloc and free
-
-Since commit 1d029b40c9de ("lib/jpeg: Replace decoder with Wuffs'
-implementation"), a relatively large heap allocation is needed to decode
-many JPEGs for use as work area. The prior decoder did not need this,
-but also had many limitations in the JPEGs it could decode, was not as
-memory-safe and quickly crashed under fuzzing.
-
-This commit keeps using Wuffs' JPEG decoder, but it no longer requires
-any heap allocation (and thus configuring the heap size depending on how
-big a bootsplash image you want to support).
-
-Change-Id: Ie4c52520cbce498539517c4898ff765365a6beba
-Signed-off-by: Nigel Tao <nigeltao@golang.org>
-Reviewed-on: https://review.coreboot.org/c/coreboot/+/83895
-Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
-Reviewed-by: Nico Huber <nico.h@gmx.de>
-Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
-Reviewed-by: Jonathon Hall <jonathon.hall@puri.sm>
----
- src/lib/jpeg.c | 36 +++++++++++++++++++++---------------
- 1 file changed, 21 insertions(+), 15 deletions(-)
-
-diff --git a/src/lib/jpeg.c b/src/lib/jpeg.c
-index 242cf0ca8e..617ab0b22a 100644
---- a/src/lib/jpeg.c
-+++ b/src/lib/jpeg.c
-@@ -1,9 +1,7 @@
- /* SPDX-License-Identifier: GPL-2.0-only */
- 
- /*
-- * Provide a simple API around the Wuffs JPEG decoder
-- * Uses the heap (and lots of it) for the image-size specific
-- * work buffer, so ramstage-only.
-+ * Provide a simple API around the Wuffs JPEG decoder.
-  */
- 
- #include <stdint.h>
-@@ -85,6 +83,24 @@ int jpeg_decode(unsigned char *filedata, size_t filesize, unsigned char *pic,
- 		return JPEG_DECODE_FAILED;
- 	}
- 
-+	/* Opting in to lower quality means that we can pass an empty slice as the
-+	 * "work buffer" argument to wuffs_jpeg__decoder__decode_frame below.
-+	 *
-+	 * Decoding progressive (not sequential) JPEGs would still require dynamic
-+	 * memory allocation (and the amount of work buffer required depends on the
-+	 * image dimensions), but we choose to just reject progressive JPEGs. It is
-+	 * simpler than sometimes calling malloc (which can fail, especially for
-+	 * large allocations) and free.
-+	 *
-+	 * More commentary about these quirks is at
-+	 * https://github.com/google/wuffs/blob/beaf45650085a16780b5f708b72daaeb1aa865c8/std/jpeg/decode_quirks.wuffs
-+	 */
-+	wuffs_jpeg__decoder__set_quirk(
-+		&dec, WUFFS_BASE__QUIRK_QUALITY,
-+		WUFFS_BASE__QUIRK_QUALITY__VALUE__LOWER_QUALITY);
-+	wuffs_jpeg__decoder__set_quirk(
-+		&dec, WUFFS_JPEG__QUIRK_REJECT_PROGRESSIVE_JPEGS, 1);
-+
- 	wuffs_base__image_config imgcfg;
- 	wuffs_base__io_buffer src = wuffs_base__ptr_u8__reader(filedata, filesize, true);
- 	status = wuffs_jpeg__decoder__decode_image_config(&dec, &imgcfg, &src);
-@@ -104,19 +120,9 @@ int jpeg_decode(unsigned char *filedata, size_t filesize, unsigned char *pic,
- 		return JPEG_DECODE_FAILED;
- 	}
- 
--	uint64_t workbuf_len_min_incl = wuffs_jpeg__decoder__workbuf_len(&dec).min_incl;
--	uint8_t *workbuf_array = malloc(workbuf_len_min_incl);
--	if ((workbuf_array == NULL) && workbuf_len_min_incl) {
--		return JPEG_DECODE_FAILED;
--	}
--
--	wuffs_base__slice_u8 workbuf =
--		wuffs_base__make_slice_u8(workbuf_array, workbuf_len_min_incl);
- 	status = wuffs_jpeg__decoder__decode_frame(&dec, &pixbuf, &src,
--						   WUFFS_BASE__PIXEL_BLEND__SRC, workbuf, NULL);
--
--	free(workbuf_array);
--
-+						   WUFFS_BASE__PIXEL_BLEND__SRC,
-+						   wuffs_base__empty_slice_u8(), NULL);
- 	if (status.repr) {
- 		return JPEG_DECODE_FAILED;
- 	}
--- 
-2.39.2
-
diff --git a/patches/coreboot-dasharo-unreleased/0003-CONFIG_RESOURCE_ALLOCATION_TOP_DOWN-CONFIG_DOMAIN_RESOURCE_32BIT_LIMIT.patch b/patches/coreboot-dasharo-unreleased/0003-CONFIG_RESOURCE_ALLOCATION_TOP_DOWN-CONFIG_DOMAIN_RESOURCE_32BIT_LIMIT.patch
deleted file mode 100644
index 4b48903f..00000000
--- a/patches/coreboot-dasharo-unreleased/0003-CONFIG_RESOURCE_ALLOCATION_TOP_DOWN-CONFIG_DOMAIN_RESOURCE_32BIT_LIMIT.patch
+++ /dev/null
@@ -1,130 +0,0 @@
-From a2180b33351e63187b6de834d3a3fd30ea8b500c Mon Sep 17 00:00:00 2001
-From: Arthur Heymans <arthur@aheymans.xyz>
-Date: Thu, 25 Jan 2024 16:40:50 +0100
-Subject: [PATCH] nb/intel/*: Match ACPI with resource allocation
-
-Currently resource allocation starts top down from the default value
-0xfe000000. This does not match what ACPI reports, so adapt
-CONFIG_DOMAIN_RESOURCE_32BIT_LIMIT to reflect that.
-
-Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
-Change-Id: I2ba0e96a7ab18d65b7fbbb38b1a979ea2ec6d1be
-Reviewed-on: https://review.coreboot.org/c/coreboot/+/80207
-Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
-Reviewed-by: Nico Huber <nico.h@gmx.de>
----
- src/northbridge/intel/gm45/Kconfig        | 4 ++++
- src/northbridge/intel/haswell/Kconfig     | 4 ++++
- src/northbridge/intel/i945/Kconfig        | 4 ++++
- src/northbridge/intel/ironlake/Kconfig    | 4 ++++
- src/northbridge/intel/pineview/Kconfig    | 4 ++++
- src/northbridge/intel/sandybridge/Kconfig | 4 ++++
- src/northbridge/intel/x4x/Kconfig         | 4 ++++
- 7 files changed, 28 insertions(+)
-
-diff --git a/src/northbridge/intel/gm45/Kconfig b/src/northbridge/intel/gm45/Kconfig
-index 8059e7ee80..fef0d735b3 100644
---- a/src/northbridge/intel/gm45/Kconfig
-+++ b/src/northbridge/intel/gm45/Kconfig
-@@ -31,6 +31,10 @@ config ECAM_MMCONF_BUS_NUMBER
- 	int
- 	default 64
- 
-+# This number must be equal or lower than what's reported in ACPI PCI _CRS
-+config DOMAIN_RESOURCE_32BIT_LIMIT
-+	default 0xfec00000
-+
- config SMM_RESERVED_SIZE
- 	hex
- 	default 0x100000
-diff --git a/src/northbridge/intel/haswell/Kconfig b/src/northbridge/intel/haswell/Kconfig
-index 4b83a25bc1..35403373e7 100644
---- a/src/northbridge/intel/haswell/Kconfig
-+++ b/src/northbridge/intel/haswell/Kconfig
-@@ -60,6 +60,10 @@ config ECAM_MMCONF_BUS_NUMBER
- 	int
- 	default 64
- 
-+# This number must be equal or lower than what's reported in ACPI PCI _CRS
-+config DOMAIN_RESOURCE_32BIT_LIMIT
-+	default ECAM_MMCONF_BASE_ADDRESS
-+
- config DCACHE_RAM_BASE
- 	hex
- 	default 0xff7c0000
-diff --git a/src/northbridge/intel/i945/Kconfig b/src/northbridge/intel/i945/Kconfig
-index ef925e17e7..32eff1a611 100644
---- a/src/northbridge/intel/i945/Kconfig
-+++ b/src/northbridge/intel/i945/Kconfig
-@@ -41,6 +41,10 @@ config ECAM_MMCONF_BUS_NUMBER
- 	int
- 	default 64
- 
-+# This number must be equal or lower than what's reported in ACPI PCI _CRS
-+config DOMAIN_RESOURCE_32BIT_LIMIT
-+	default 0xfec00000
-+
- config OVERRIDE_CLOCK_DISABLE
- 	bool
- 	default n
-diff --git a/src/northbridge/intel/ironlake/Kconfig b/src/northbridge/intel/ironlake/Kconfig
-index ce705dcf53..2bafebf92e 100644
---- a/src/northbridge/intel/ironlake/Kconfig
-+++ b/src/northbridge/intel/ironlake/Kconfig
-@@ -47,6 +47,10 @@ config ECAM_MMCONF_BASE_ADDRESS
- config ECAM_MMCONF_BUS_NUMBER
- 	default 256
- 
-+# This number must be equal or lower than what's reported in ACPI PCI _CRS
-+config DOMAIN_RESOURCE_32BIT_LIMIT
-+	default 0xfec00000
-+
- config INTEL_GMA_BCLV_OFFSET
- 	default 0x48254
- 
-diff --git a/src/northbridge/intel/pineview/Kconfig b/src/northbridge/intel/pineview/Kconfig
-index 877812643a..59cfcd5e0a 100644
---- a/src/northbridge/intel/pineview/Kconfig
-+++ b/src/northbridge/intel/pineview/Kconfig
-@@ -38,4 +38,8 @@ config FIXED_DMIBAR_MMIO_BASE
- config FIXED_EPBAR_MMIO_BASE
- 	default 0xfed19000
- 
-+# This number must be equal or lower than what's reported in ACPI PCI _CRS
-+config DOMAIN_RESOURCE_32BIT_LIMIT
-+	default 0xfec00000
-+
- endif
-diff --git a/src/northbridge/intel/sandybridge/Kconfig b/src/northbridge/intel/sandybridge/Kconfig
-index f7d56c7503..fa40b0668d 100644
---- a/src/northbridge/intel/sandybridge/Kconfig
-+++ b/src/northbridge/intel/sandybridge/Kconfig
-@@ -104,6 +104,10 @@ config ECAM_MMCONF_BUS_NUMBER
- 	int
- 	default 64
- 
-+# This number must be equal or lower than what's reported in ACPI PCI _CRS
-+config DOMAIN_RESOURCE_32BIT_LIMIT
-+	default ECAM_MMCONF_BASE_ADDRESS
-+
- config DCACHE_RAM_BASE
- 	hex
- 	default 0xfefe0000
-diff --git a/src/northbridge/intel/x4x/Kconfig b/src/northbridge/intel/x4x/Kconfig
-index 9af063819b..097e11126c 100644
---- a/src/northbridge/intel/x4x/Kconfig
-+++ b/src/northbridge/intel/x4x/Kconfig
-@@ -28,6 +28,10 @@ config ECAM_MMCONF_BUS_NUMBER
- 	int
- 	default 256
- 
-+# This number must be equal or lower than what's reported in ACPI PCI _CRS
-+config DOMAIN_RESOURCE_32BIT_LIMIT
-+	default 0xfec00000
-+
- config SMM_RESERVED_SIZE
- 	hex
- 	default 0x100000
--- 
-2.39.2
-

From 75f0fd12d7ebdd71069d332f2f62ce987e58cad7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Wed, 15 Jan 2025 12:42:18 +0100
Subject: [PATCH 33/37] config/coreboot-novacustom-v5.0tu: Set correct IOE PCR
 base addr
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

As per coreboot commit 8adaae026dc055fa8b445fbe32e5146576d56c28

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 config/coreboot-novacustom-v540tu.config | 2 +-
 config/coreboot-novacustom-v560tu.config | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/config/coreboot-novacustom-v540tu.config b/config/coreboot-novacustom-v540tu.config
index 7da904d9..e7d9621d 100644
--- a/config/coreboot-novacustom-v540tu.config
+++ b/config/coreboot-novacustom-v540tu.config
@@ -308,7 +308,7 @@ CONFIG_SOC_INTEL_METEORLAKE_U_H=y
 CONFIG_SOC_INTEL_METEORLAKE_TCSS_USB4_SUPPORT=y
 CONFIG_METEORLAKE_CAR_ENHANCED_NEM=y
 CONFIG_CPU_MAX_TEMPERATURE=110
-CONFIG_IOE_PCR_BASE_ADDRESS=0x3fff0000000
+CONFIG_IOE_PCR_BASE_ADDRESS=0x60000000
 CONFIG_SOC_INTEL_USB2_DEV_MAX=10
 CONFIG_SOC_INTEL_USB3_DEV_MAX=2
 CONFIG_SOC_INTEL_METEORLAKE_DEBUG_CONSENT=0
diff --git a/config/coreboot-novacustom-v560tu.config b/config/coreboot-novacustom-v560tu.config
index 01d555a3..ccc35a77 100644
--- a/config/coreboot-novacustom-v560tu.config
+++ b/config/coreboot-novacustom-v560tu.config
@@ -308,7 +308,7 @@ CONFIG_SOC_INTEL_METEORLAKE_U_H=y
 CONFIG_SOC_INTEL_METEORLAKE_TCSS_USB4_SUPPORT=y
 CONFIG_METEORLAKE_CAR_ENHANCED_NEM=y
 CONFIG_CPU_MAX_TEMPERATURE=110
-CONFIG_IOE_PCR_BASE_ADDRESS=0x3fff0000000
+CONFIG_IOE_PCR_BASE_ADDRESS=0x60000000
 CONFIG_SOC_INTEL_USB2_DEV_MAX=10
 CONFIG_SOC_INTEL_USB3_DEV_MAX=2
 CONFIG_SOC_INTEL_METEORLAKE_DEBUG_CONSENT=0

From a80d6da99ba15fa9d1462e084c9065b4ec3c8e9f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Wed, 15 Jan 2025 15:09:38 +0100
Subject: [PATCH 34/37] modules/coreboot: bump Dasharo fork for GOP single
 display fix
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 modules/coreboot | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/coreboot b/modules/coreboot
index 7236ba6f..66b1a521 100644
--- a/modules/coreboot
+++ b/modules/coreboot
@@ -94,7 +94,7 @@ $(eval $(call coreboot_module,purism,24.02.01))
 # MSI and NovaCustom NV4xPZ, NS5xPU, V540TU, V560TU boards are based on Dasharo
 # coreboot fork, based on upstream coreboot version 24.02
 coreboot-dasharo_repo := https://github.com/dasharo/coreboot
-coreboot-dasharo_commit_hash := 8adaae026dc055fa8b445fbe32e5146576d56c28
+coreboot-dasharo_commit_hash := 94e5f5d5b808cf8d8fd5c70d4ef6a08a054f8986
 $(eval $(call coreboot_module,dasharo,24.02.01))
 #coreboot-dasharo_patch_version := unreleased
 

From de79d2a853f6913f19c5866ffe140f90574b4f2d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Wed, 15 Jan 2025 15:13:38 +0100
Subject: [PATCH 35/37] boards/novacustom-v540tu: remove board
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Support for V54 series is not added at this time.

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 .circleci/config.yml                          |   8 -
 .../novacustom-v540tu.config                  |  81 --
 .../novacustom-v560tu.config                  |   2 +-
 config/coreboot-novacustom-v540tu.config      | 947 ------------------
 modules/coreboot                              |   2 +-
 5 files changed, 2 insertions(+), 1038 deletions(-)
 delete mode 100644 boards/novacustom-v540tu/novacustom-v540tu.config
 delete mode 100644 config/coreboot-novacustom-v540tu.config

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 7fc49938..cec7a58b 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -525,14 +525,6 @@ workflows:
           requires:
             - x230-hotp-maximized
 
-      - build:
-          name: novacustom-v540tu
-          target: novacustom-v540tu
-          subcommand: ""
-          requires:
-            - x230-hotp-maximized
-
-
       # coreboot 4.11
       - build:
           name: UNMAINTAINED_kgpe-d16_workstation
diff --git a/boards/novacustom-v540tu/novacustom-v540tu.config b/boards/novacustom-v540tu/novacustom-v540tu.config
deleted file mode 100644
index 3441e5e4..00000000
--- a/boards/novacustom-v540tu/novacustom-v540tu.config
+++ /dev/null
@@ -1,81 +0,0 @@
-# NovaCustom V54 MTL (integrated graphics) board configuration
-# Note the FLASH_OPTIONS: '--ifd -i bios -i me -i fd'
-#  This excludes gbe from internal flashing, otherwise mac address would revert to '88:88:88:88:87:88' see https://github.com/linuxboot/heads/pull/1871#discussion_r1870134788
-#   Same options should be used when externally flashing the first time, otherwise Intel GBE region (Ethernet config blob) will be overwitten and MAC reverted to '88:88:88:88:87:88'
-
-# Meteor Lake (Intel Gen 14) is not supposed to support s3 but coincidently does. In case s3 is broken, user must configure settings to not suspend or otherwise enable ME/CSME for s01x to work (unsupported by QubesOS when writing those lines) or use Hibernate (Not supported by QubesOS either)
-
-export CONFIG_COREBOOT=y
-export CONFIG_COREBOOT_VERSION=dasharo
-export CONFIG_LINUX_VERSION=6.1.8
-
-CONFIG_COREBOOT_CONFIG=config/coreboot-novacustom-v540tu.config
-CONFIG_LINUX_CONFIG=config/linux-novacustom-common.config
-
-#Enable DEBUG output
-#export CONFIG_DEBUG_OUTPUT=y
-#export CONFIG_ENABLE_FUNCTION_TRACING_OUTPUT=y
-#Enable TPM2 pcap output under /tmp
-#export CONFIG_TPM2_CAPTURE_PCAP=y
-
-#On-demand hardware support (modules.cpio)
-CONFIG_LINUX_USB=y
-CONFIG_LINUX_E1000=y
-CONFIG_MOBILE_TETHERING=y
-
-#Modules packed into tools.cpio
-CONFIG_CRYPTSETUP2=y
-CONFIG_FLASHPROG=y
-CONFIG_FLASHTOOLS=y
-CONFIG_GPG2=y
-CONFIG_KEXEC=y
-CONFIG_UTIL_LINUX=y
-CONFIG_LVM2=y
-CONFIG_MBEDTLS=y
-CONFIG_PCIUTILS=y
-
-#platform locking finalization (PR0)
-CONFIG_IO386=y
-export CONFIG_FINALIZE_PLATFORM_LOCKING=y
-
-
-#Remote attestation support
-# TPM2 requirements
-CONFIG_TPM2_TSS=y
-CONFIG_OPENSSL=y
-#Remote Attestation common tools
-CONFIG_POPT=y
-CONFIG_QRENCODE=y
-CONFIG_TPMTOTP=y
-#HOTP based remote attestation for supported USB Security dongle
-#With/Without TPM support
-CONFIG_HOTPKEY=y
-#Nitrokey Storage admin tool (deprecated)
-#CONFIG_NKSTORECLI=n
-#GUI Support
-#Console based Whiptail support(Console based, no FB):
-#CONFIG_SLANG=y
-#CONFIG_NEWT=y
-#FBWhiptail based (Graphical):
-CONFIG_CAIRO=y
-CONFIG_FBWHIPTAIL=y
-#Additional tools (tools.cpio):
-#SSH server (requires ethernet drivers, eg: CONFIG_LINUX_E1000E)
-CONFIG_DROPBEAR=y
-
-#Runtime configuration
-#Automatically boot if HOTP is valid
-export CONFIG_AUTO_BOOT_TIMEOUT=5
-#TPM2 requirements
-export CONFIG_TPM2_TOOLS=y
-export CONFIG_PRIMARY_KEY_TYPE=ecc
-#TPM1 requirements
-#export CONFIG_TPM=y
-export CONFIG_BOOTSCRIPT=/bin/gui-init
-export CONFIG_BOOT_REQ_HASH=n
-export CONFIG_BOOT_REQ_ROLLBACK=n
-export CONFIG_BOOT_KERNEL_ADD=""
-export CONFIG_BOOT_KERNEL_REMOVE="intel_iommu=on intel_iommu=igfx_off"
-export CONFIG_BOARD_NAME="NovaCustom V540TU"
-export CONFIG_FLASH_OPTIONS="flashprog --progress --programmer internal --ifd -i bios -i me -i fd"
-export CONFIG_AUTO_BOOT_TIMEOUT=5
diff --git a/boards/novacustom-v560tu/novacustom-v560tu.config b/boards/novacustom-v560tu/novacustom-v560tu.config
index 3f06062c..5a216b39 100644
--- a/boards/novacustom-v560tu/novacustom-v560tu.config
+++ b/boards/novacustom-v560tu/novacustom-v560tu.config
@@ -76,6 +76,6 @@ export CONFIG_BOOT_REQ_HASH=n
 export CONFIG_BOOT_REQ_ROLLBACK=n
 export CONFIG_BOOT_KERNEL_ADD=""
 export CONFIG_BOOT_KERNEL_REMOVE="intel_iommu=on intel_iommu=igfx_off"
-export CONFIG_BOARD_NAME="NovaCustom V540TU"
+export CONFIG_BOARD_NAME="NovaCustom V560TU"
 export CONFIG_FLASH_OPTIONS="flashprog --progress --programmer internal --ifd -i bios -i me -i fd"
 export CONFIG_AUTO_BOOT_TIMEOUT=5
diff --git a/config/coreboot-novacustom-v540tu.config b/config/coreboot-novacustom-v540tu.config
deleted file mode 100644
index e7d9621d..00000000
--- a/config/coreboot-novacustom-v540tu.config
+++ /dev/null
@@ -1,947 +0,0 @@
-#
-# Automatically generated file; DO NOT EDIT.
-# coreboot configuration
-#
-
-#
-# General setup
-#
-CONFIG_COREBOOT_BUILD=y
-CONFIG_LOCALVERSION="v0.9.0-rc2"
-CONFIG_CBFS_PREFIX="fallback"
-CONFIG_COMPILER_GCC=y
-# CONFIG_COMPILER_LLVM_CLANG is not set
-CONFIG_ARCH_SUPPORTS_CLANG=y
-# CONFIG_ANY_TOOLCHAIN is not set
-# CONFIG_CCACHE is not set
-# CONFIG_IWYU is not set
-# CONFIG_FMD_GENPARSER is not set
-# CONFIG_UTIL_GENPARSER is not set
-CONFIG_OPTION_BACKEND_NONE=y
-# CONFIG_USE_OPTION_TABLE is not set
-CONFIG_COMPRESS_RAMSTAGE_LZMA=y
-# CONFIG_COMPRESS_RAMSTAGE_LZ4 is not set
-CONFIG_SEPARATE_ROMSTAGE=y
-CONFIG_INCLUDE_CONFIG_FILE=y
-CONFIG_COLLECT_TIMESTAMPS=y
-# CONFIG_TIMESTAMPS_ON_CONSOLE is not set
-CONFIG_USE_BLOBS=y
-# CONFIG_USE_AMD_BLOBS is not set
-# CONFIG_USE_QC_BLOBS is not set
-# CONFIG_COVERAGE is not set
-# CONFIG_UBSAN is not set
-CONFIG_HAVE_ASAN_IN_RAMSTAGE=y
-# CONFIG_ASAN is not set
-# CONFIG_NO_STAGE_CACHE is not set
-CONFIG_TSEG_STAGE_CACHE=y
-# CONFIG_UPDATE_IMAGE is not set
-CONFIG_BOOTSPLASH_IMAGE=y
-CONFIG_BOOTSPLASH_FILE="@BRAND_DIR@/bootsplash.jpg"
-CONFIG_BOOTSPLASH_CONVERT=y
-CONFIG_BOOTSPLASH_CONVERT_QUALITY=90
-# CONFIG_BOOTSPLASH_CONVERT_RESIZE is not set
-# CONFIG_BOOTSPLASH_CONVERT_COLORSWAP is not set
-# CONFIG_FW_CONFIG is not set
-
-#
-# Software Bill Of Materials (SBOM)
-#
-# CONFIG_SBOM is not set
-# end of Software Bill Of Materials (SBOM)
-# end of General setup
-
-#
-# Mainboard
-#
-
-#
-# Important: Run 'make distclean' before switching boards
-#
-# CONFIG_VENDOR_51NB is not set
-# CONFIG_VENDOR_ACER is not set
-# CONFIG_VENDOR_ADLINK is not set
-# CONFIG_VENDOR_AMD is not set
-# CONFIG_VENDOR_AOPEN is not set
-# CONFIG_VENDOR_APPLE is not set
-# CONFIG_VENDOR_ASROCK is not set
-# CONFIG_VENDOR_ASUS is not set
-# CONFIG_VENDOR_BIOSTAR is not set
-# CONFIG_VENDOR_BOSTENTECH is not set
-# CONFIG_VENDOR_BYTEDANCE is not set
-# CONFIG_VENDOR_CAVIUM is not set
-CONFIG_VENDOR_CLEVO=y
-# CONFIG_VENDOR_COMPULAB is not set
-# CONFIG_VENDOR_DELL is not set
-# CONFIG_VENDOR_EMULATION is not set
-# CONFIG_VENDOR_EXAMPLE is not set
-# CONFIG_VENDOR_FACEBOOK is not set
-# CONFIG_VENDOR_FOXCONN is not set
-# CONFIG_VENDOR_GETAC is not set
-# CONFIG_VENDOR_GIGABYTE is not set
-# CONFIG_VENDOR_GOOGLE is not set
-# CONFIG_VENDOR_HARDKERNEL is not set
-# CONFIG_VENDOR_HP is not set
-# CONFIG_VENDOR_IBASE is not set
-# CONFIG_VENDOR_IBM is not set
-# CONFIG_VENDOR_INTEL is not set
-# CONFIG_VENDOR_INVENTEC is not set
-# CONFIG_VENDOR_KONTRON is not set
-# CONFIG_VENDOR_LENOVO is not set
-# CONFIG_VENDOR_LIBRETREND is not set
-# CONFIG_VENDOR_MSI is not set
-# CONFIG_VENDOR_NOVACUSTOM is not set
-# CONFIG_VENDOR_OCP is not set
-# CONFIG_VENDOR_OPENCELLULAR is not set
-# CONFIG_VENDOR_PACKARDBELL is not set
-# CONFIG_VENDOR_PCENGINES is not set
-# CONFIG_VENDOR_PINE64 is not set
-# CONFIG_VENDOR_PORTWELL is not set
-# CONFIG_VENDOR_PRODRIVE is not set
-# CONFIG_VENDOR_PROTECTLI is not set
-# CONFIG_VENDOR_PURISM is not set
-# CONFIG_VENDOR_RAZER is not set
-# CONFIG_VENDOR_RODA is not set
-# CONFIG_VENDOR_SAMSUNG is not set
-# CONFIG_VENDOR_SAPPHIRE is not set
-# CONFIG_VENDOR_SIEMENS is not set
-# CONFIG_VENDOR_SIFIVE is not set
-# CONFIG_VENDOR_STARLABS is not set
-# CONFIG_VENDOR_SUPERMICRO is not set
-# CONFIG_VENDOR_SYSTEM76 is not set
-# CONFIG_VENDOR_TI is not set
-# CONFIG_VENDOR_UP is not set
-CONFIG_MAINBOARD_FAMILY="Not Applicable"
-CONFIG_MAINBOARD_PART_NUMBER="V54x_6x_TU"
-CONFIG_MAINBOARD_VERSION="V540TU"
-CONFIG_MAINBOARD_DIR="clevo/mtl-h"
-CONFIG_DIMM_MAX=4
-CONFIG_DIMM_SPD_SIZE=1024
-CONFIG_FMDFILE=""
-# CONFIG_NO_POST is not set
-CONFIG_MAINBOARD_VENDOR="Clevo"
-CONFIG_CBFS_SIZE=0x1000000
-# CONFIG_CONSOLE_SERIAL is not set
-CONFIG_MAX_CPUS=22
-CONFIG_ONBOARD_VGA_IS_PRIMARY=y
-# CONFIG_POST_DEVICE is not set
-# CONFIG_POST_IO is not set
-CONFIG_UART_FOR_CONSOLE=0
-CONFIG_DEVICETREE="devicetree.cb"
-# CONFIG_VBOOT is not set
-CONFIG_VBOOT_VBNV_OFFSET=0x28
-CONFIG_VARIANT_DIR="igpu"
-CONFIG_OVERRIDE_DEVICETREE="variants/$(CONFIG_VARIANT_DIR)/overridetree.cb"
-# CONFIG_VGA_BIOS is not set
-CONFIG_MAINBOARD_SMBIOS_MANUFACTURER="Notebook"
-CONFIG_INTEL_GMA_VBT_FILE="src/mainboard/$(MAINBOARDDIR)/variants/$(VARIANT_DIR)/data.vbt"
-# CONFIG_DISABLE_HECI1_AT_PRE_BOOT is not set
-CONFIG_PRERAM_CBMEM_CONSOLE_SIZE=0x2000
-CONFIG_CMOS_DEFAULT_FILE="src/mainboard/$(MAINBOARDDIR)/cmos.default"
-CONFIG_CMOS_LAYOUT_FILE="src/mainboard/$(MAINBOARDDIR)/cmos.layout"
-CONFIG_BOOT_DEVICE_SPI_FLASH_BUS=0
-
-#
-# Alder Lake P
-#
-# CONFIG_BOARD_CLEVO_NS50PU is not set
-# CONFIG_BOARD_CLEVO_NV40PZ is not set
-
-#
-# Comet Lake U
-#
-# CONFIG_BOARD_CLEVO_L140CU is not set
-
-#
-# Kaby Lake U
-#
-# CONFIG_BOARD_CLEVO_N130WU is not set
-
-#
-# Meteor Lake H
-#
-# CONFIG_BOARD_CLEVO_V540TNX is not set
-# CONFIG_BOARD_CLEVO_V560TNX is not set
-CONFIG_BOARD_CLEVO_V540TU=y
-# CONFIG_BOARD_CLEVO_V560TU is not set
-
-#
-# Tiger Lake U
-#
-# CONFIG_BOARD_CLEVO_L140MU is not set
-# CONFIG_BOARD_CLEVO_NV40MZ is not set
-# CONFIG_BOARD_CLEVO_NS50MU is not set
-CONFIG_MAINBOARD_SMBIOS_PRODUCT_NAME="V54x_6x_TU"
-# CONFIG_CONSOLE_POST is not set
-# CONFIG_USE_PM_ACPI_TIMER is not set
-CONFIG_TPM_PIRQ=0x61
-# CONFIG_SOC_INTEL_CSE_SEND_EOP_EARLY is not set
-CONFIG_VBOOT_FWID_VERSION="$(CONFIG_LOCALVERSION)"
-CONFIG_EC_SYSTEM76_EC_BAT_THRESHOLDS=y
-CONFIG_BOARD_CLEVO_MTLH_COMMON=y
-CONFIG_BOARD_CLEVO_V5X0TU_BASE=y
-CONFIG_EC_SYSTEM76_EC_FLASH_SIZE=0x40000
-CONFIG_ECAM_MMCONF_BASE_ADDRESS=0xc0000000
-CONFIG_ECAM_MMCONF_BUS_NUMBER=256
-CONFIG_MEMLAYOUT_LD_FILE="src/arch/x86/memlayout.ld"
-CONFIG_DCACHE_RAM_BASE=0xfef00000
-CONFIG_DCACHE_RAM_SIZE=0xc0000
-CONFIG_C_ENV_BOOTBLOCK_SIZE=0x40000
-CONFIG_DCACHE_BSP_STACK_SIZE=0x80400
-CONFIG_MAX_ACPI_TABLE_SIZE_KB=144
-CONFIG_HAVE_INTEL_FIRMWARE=y
-CONFIG_MRC_SETTINGS_CACHE_SIZE=0x10000
-CONFIG_DRIVERS_INTEL_WIFI=y
-CONFIG_IFD_BIN_PATH="3rdparty/dasharo-blobs/novacustom/v5x0tu/descriptor.bin"
-CONFIG_ME_BIN_PATH="3rdparty/dasharo-blobs/novacustom/v5x0tu/me.bin"
-CONFIG_GBE_BIN_PATH="3rdparty/dasharo-blobs/novacustom/v5x0tu/gbe.bin"
-CONFIG_CONSOLE_CBMEM_BUFFER_SIZE=0x200000
-CONFIG_PCIEXP_DEFAULT_MAX_RESIZABLE_BAR_BITS=36
-CONFIG_CARDBUS_PLUGIN_SUPPORT=y
-CONFIG_SPI_FLASH_DONT_INCLUDE_ALL_DRIVERS=y
-# CONFIG_USE_LEGACY_8254_TIMER is not set
-# CONFIG_DEBUG_SMI is not set
-CONFIG_HAVE_IFD_BIN=y
-CONFIG_PCIEXP_HOTPLUG_BUSES=42
-CONFIG_PCIEXP_HOTPLUG_MEM=0xc200000
-CONFIG_PCIEXP_HOTPLUG_PREFETCH_MEM=0x1c000000
-CONFIG_PS2K_EISAID="PNP0303"
-CONFIG_PS2M_EISAID="PNP0F13"
-CONFIG_POWER_STATE_DEFAULT_ON_AFTER_FAILURE=y
-CONFIG_D3COLD_SUPPORT=y
-CONFIG_PCIEXP_ASPM=y
-CONFIG_PCIEXP_L1_SUB_STATE=y
-CONFIG_PCIEXP_CLK_PM=y
-# CONFIG_DRIVERS_UART_8250IO is not set
-CONFIG_PC_CMOS_BASE_PORT_BANK1=0x72
-CONFIG_FSP_TEMP_RAM_SIZE=0x20000
-CONFIG_EC_GPE_SCI=0x50
-CONFIG_TPM_MEASURED_BOOT=y
-CONFIG_LINUX_COMMAND_LINE="debug"
-CONFIG_BOARD_ROMSIZE_KB_32768=y
-# CONFIG_COREBOOT_ROMSIZE_KB_256 is not set
-# CONFIG_COREBOOT_ROMSIZE_KB_512 is not set
-# CONFIG_COREBOOT_ROMSIZE_KB_1024 is not set
-# CONFIG_COREBOOT_ROMSIZE_KB_2048 is not set
-# CONFIG_COREBOOT_ROMSIZE_KB_4096 is not set
-# CONFIG_COREBOOT_ROMSIZE_KB_5120 is not set
-# CONFIG_COREBOOT_ROMSIZE_KB_6144 is not set
-# CONFIG_COREBOOT_ROMSIZE_KB_8192 is not set
-# CONFIG_COREBOOT_ROMSIZE_KB_10240 is not set
-# CONFIG_COREBOOT_ROMSIZE_KB_12288 is not set
-# CONFIG_COREBOOT_ROMSIZE_KB_16384 is not set
-# CONFIG_COREBOOT_ROMSIZE_KB_24576 is not set
-CONFIG_COREBOOT_ROMSIZE_KB_32768=y
-# CONFIG_COREBOOT_ROMSIZE_KB_65536 is not set
-CONFIG_COREBOOT_ROMSIZE_KB=32768
-CONFIG_ROM_SIZE=0x02000000
-CONFIG_HAVE_POWER_STATE_AFTER_FAILURE=y
-CONFIG_HAVE_POWER_STATE_PREVIOUS_AFTER_FAILURE=y
-CONFIG_POWER_STATE_OFF_AFTER_FAILURE=y
-# CONFIG_POWER_STATE_ON_AFTER_FAILURE is not set
-# CONFIG_POWER_STATE_PREVIOUS_AFTER_FAILURE is not set
-CONFIG_MAINBOARD_POWER_FAILURE_STATE=0
-# end of Mainboard
-
-CONFIG_SYSTEM_TYPE_LAPTOP=y
-
-#
-# Chipset
-#
-
-#
-# SoC
-#
-CONFIG_CHIPSET_DEVICETREE="soc/intel/meteorlake/chipset.cb"
-CONFIG_FSP_M_FILE="$(obj)/Fsp_M.fd"
-CONFIG_FSP_S_FILE="$(obj)/Fsp_S.fd"
-CONFIG_CBFS_MCACHE_SIZE=0x4000
-CONFIG_ROMSTAGE_ADDR=0x2000000
-CONFIG_VERSTAGE_ADDR=0x2000000
-CONFIG_CONSOLE_UART_BASE_ADDRESS=0xfe02c000
-CONFIG_SMM_TSEG_SIZE=0x800000
-CONFIG_SMM_RESERVED_SIZE=0x200000
-CONFIG_SMM_MODULE_STACK_SIZE=0x800
-CONFIG_ACPI_BERT=y
-CONFIG_ACPI_BERT_SIZE=0x10000
-CONFIG_DRIVERS_I2C_DESIGNWARE_CLOCK_MHZ=133
-CONFIG_VBOOT_HASH_BLOCK_SIZE=0x1000
-CONFIG_PRERAM_CBFS_CACHE_SIZE=0x4000
-CONFIG_DOMAIN_RESOURCE_32BIT_LIMIT=0xe0000000
-CONFIG_ACPI_CPU_STRING="CP%02X"
-CONFIG_STACK_SIZE=0x2000
-CONFIG_EXT_BIOS_WIN_BASE=0xf8000000
-CONFIG_EXT_BIOS_WIN_SIZE=0x2000000
-CONFIG_IFD_CHIPSET="mtl"
-CONFIG_IED_REGION_SIZE=0x400000
-CONFIG_MAX_TBT_ROOT_PORTS=4
-CONFIG_MAX_ROOT_PORTS=12
-CONFIG_MAX_PCIE_CLOCK_SRC=9
-CONFIG_PCR_BASE_ADDRESS=0xe0000000
-CONFIG_CPU_BCLK_MHZ=100
-CONFIG_SOC_INTEL_PERFORMANCE_CORE_SCALE_FACTOR=125
-CONFIG_SOC_INTEL_EFFICIENT_CORE_SCALE_FACTOR=100
-CONFIG_SOC_INTEL_COMMON_BLOCK_GSPI_CLOCK_MHZ=120
-CONFIG_CPU_XTAL_HZ=38400000
-CONFIG_SOC_INTEL_COMMON_BLOCK_GSPI_MAX=3
-CONFIG_SOC_INTEL_I2C_DEV_MAX=6
-CONFIG_SOC_INTEL_UART_DEV_MAX=3
-CONFIG_SOC_INTEL_COMMON_LPSS_UART_CLK_M_VAL=0x25a
-CONFIG_SOC_INTEL_COMMON_LPSS_UART_CLK_N_VAL=0x7fff
-CONFIG_FSP_HEADER_PATH="3rdparty/dasharo-blobs/novacustom/v5x0tu/MeteorLakeFspBinPkg/Include/"
-CONFIG_FSP_FD_PATH="3rdparty/dasharo-blobs/novacustom/v5x0tu/MeteorLakeFspBinPkg/Fsp.fd"
-CONFIG_DATA_BUS_WIDTH=128
-CONFIG_DIMMS_PER_CHANNEL=2
-CONFIG_MRC_CHANNEL_WIDTH=16
-CONFIG_BUILDING_WITH_DEBUG_FSP=y
-CONFIG_INTEL_GMA_BCLV_OFFSET=0xc8258
-CONFIG_INTEL_GMA_BCLV_WIDTH=32
-CONFIG_INTEL_GMA_BCLM_OFFSET=0xc8254
-CONFIG_INTEL_GMA_BCLM_WIDTH=32
-CONFIG_FSP_PUBLISH_MBP_HOB=y
-CONFIG_MAX_HECI_DEVICES=6
-CONFIG_BOOTBLOCK_IN_CBFS=y
-CONFIG_HAVE_PAM0_REGISTER=y
-CONFIG_PCIEXP_COMMON_CLOCK=y
-CONFIG_CPU_INTEL_NUM_FIT_ENTRIES=4
-CONFIG_SOC_INTEL_METEORLAKE=y
-CONFIG_SOC_INTEL_METEORLAKE_U_H=y
-CONFIG_SOC_INTEL_METEORLAKE_TCSS_USB4_SUPPORT=y
-CONFIG_METEORLAKE_CAR_ENHANCED_NEM=y
-CONFIG_CPU_MAX_TEMPERATURE=110
-CONFIG_IOE_PCR_BASE_ADDRESS=0x60000000
-CONFIG_SOC_INTEL_USB2_DEV_MAX=10
-CONFIG_SOC_INTEL_USB3_DEV_MAX=2
-CONFIG_SOC_INTEL_METEORLAKE_DEBUG_CONSENT=0
-CONFIG_SOC_INTEL_GFX_FRAMEBUFFER_OFFSET=0x800000
-CONFIG_PCIE_LTR_MAX_SNOOP_LATENCY=0x100f
-CONFIG_PCIE_LTR_MAX_NO_SNOOP_LATENCY=0x100f
-CONFIG_IOE_DIE_CLOCK_START=6
-CONFIG_SOC_INTEL_CSE_FW_PARTITION_CMOS_OFFSET=161
-CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_SLP_S0_FREQ_HZ=0x2005
-CONFIG_SOC_PHYSICAL_ADDRESS_WIDTH=42
-CONFIG_INTEL_TME=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_P2SB=y
-CONFIG_FIXED_SMBUS_IO_BASE=0xefa0
-CONFIG_CBFS_CACHE_ALIGN=8
-CONFIG_SOC_INTEL_COMMON=y
-
-#
-# Intel SoC Common Code for IP blocks
-#
-CONFIG_SOC_INTEL_COMMON_BLOCK=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_GPIO=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_LPIT=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_PEP=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_PEP_LPM_REQ=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_CRASHLOG=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_CPPC=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_CPU_HYBRID=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_CHIP_CONFIG=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_CNVI=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_CPU=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_CPU_MPINIT=y
-CONFIG_USE_FSP_FEATURE_PROGRAM_ON_APS=y
-# CONFIG_USE_COREBOOT_MP_INIT is not set
-CONFIG_SOC_INTEL_COMMON_BLOCK_CPU_SMMRELOCATE=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_CAR=y
-CONFIG_INTEL_CAR_NEM_ENHANCED=y
-CONFIG_CAR_HAS_SF_MASKS=y
-CONFIG_COS_MAPPED_TO_MSB=y
-CONFIG_CAR_HAS_L3_PROTECTED_WAYS=y
-CONFIG_USE_INTEL_FSP_TO_CALL_COREBOOT_PUBLISH_MP_PPI=y
-CONFIG_CPU_SUPPORTS_INTEL_TME=y
-CONFIG_TME_KEY_REGENERATION_ON_WARM_BOOT=y
-CONFIG_CPU_SUPPORTS_PM_TIMER_EMULATION=y
-CONFIG_HAVE_HYPERTHREADING=y
-CONFIG_FSP_HYPERTHREADING=y
-CONFIG_INTEL_KEYLOCKER=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE=2
-# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_MAX is not set
-# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_256MB is not set
-# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_128MB is not set
-# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_64MB is not set
-# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_32MB is not set
-# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_16MB is not set
-# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_8MB is not set
-# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_4MB is not set
-CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_2MB=y
-# CONFIG_SOC_INTEL_COMMON_BLOCK_PRMRR_SIZE_0MB is not set
-CONFIG_SOC_INTEL_COMMON_BLOCK_CSE=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_HECI1_DISABLE_USING_PMC_IPC=y
-CONFIG_SOC_INTEL_CSE_SEND_EOP_LATE=y
-CONFIG_SOC_INTEL_CSE_FMAP_NAME="SI_ME"
-CONFIG_SOC_INTEL_CSE_RW_A_FMAP_NAME="ME_RW_A"
-CONFIG_SOC_INTEL_CSE_RW_B_FMAP_NAME="ME_RW_B"
-CONFIG_SOC_INTEL_CSE_RW_CBFS_NAME="me_rw"
-CONFIG_SOC_INTEL_CSE_RW_HASH_CBFS_NAME="me_rw.hash"
-CONFIG_SOC_INTEL_CSE_RW_VERSION_CBFS_NAME="me_rw.version"
-CONFIG_SOC_INTEL_CSE_RW_FILE=""
-CONFIG_SOC_INTEL_CSE_RW_VERSION=""
-CONFIG_SOC_INTEL_CSE_SET_EOP=y
-CONFIG_SOC_INTEL_CSE_IOM_CBFS_NAME="cse_iom"
-CONFIG_SOC_INTEL_CSE_IOM_CBFS_FILE=""
-CONFIG_SOC_INTEL_CSE_NPHY_CBFS_NAME="cse_nphy"
-CONFIG_SOC_INTEL_CSE_NPHY_CBFS_FILE=""
-CONFIG_SOC_INTEL_CSE_PRE_CPU_RESET_TELEMETRY=y
-CONFIG_SOC_INTEL_CSE_PRE_CPU_RESET_TELEMETRY_V2=y
-CONFIG_SOC_INTEL_CSE_HAVE_SPEC_SUPPORT=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_ME_SPEC_18=y
-CONFIG_ME_SPEC=18
-CONFIG_SOC_INTEL_COMMON_BLOCK_DSP=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_DTT=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_FAST_SPI=y
-CONFIG_FAST_SPI_DISABLE_WRITE_STATUS=y
-CONFIG_FAST_SPI_SUPPORTS_EXT_BIOS_WINDOW=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_GPIO=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_GPIO_ITSS_POL_CFG=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_GPIO_IOSTANDBY=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_GPIO_DUAL_ROUTE_SUPPORT=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_GPIO_LOCK_USING_PCR=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_GPIO_PMODE_4BITS=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_GPMR=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_GRAPHICS=y
-# CONFIG_SOC_INTEL_DISABLE_IGD is not set
-CONFIG_SOC_INTEL_GFX_NON_PREFETCHABLE_MMIO=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_GSPI=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_GSPI_VERSION_2=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_HDA=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_HDA_VERB=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_I2C=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_IOC=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_IPU=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_IRQ=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_ITSS=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_LPC=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_LPC_MIRROR_TO_GPMR=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_LPSS=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_MEMINIT=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_BASE_P2SB=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_IOE_P2SB=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_PCIE=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_PCIE_RTD3=y
-CONFIG_PCIE_CLOCK_CONTROL_THROUGH_P2SB=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_PCR=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_PMC=y
-CONFIG_SOC_INTEL_MEM_MAPPED_PM_CONFIGURATION=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_PMC_EPOC=y
-CONFIG_PMC_IPC_ACPI_INTERFACE=y
-CONFIG_PMC_GLOBAL_RESET_ENABLE_LOCK=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_POWER_LIMIT=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_RTC=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_SATA=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_SMBUS=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_TCO=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_TCO_ENABLE_THROUGH_SMBUS=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_SMM=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_SMM_IO_TRAP=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_SMM_TCO_ENABLE=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_SMM_S5_DELAY_MS=0
-CONFIG_SOC_INTEL_COMMON_BLOCK_SPI=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_SA=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_TCSS=y
-# CONFIG_TCSS_HAS_USBC_OPS is not set
-CONFIG_SOC_INTEL_COMMON_BLOCK_THERMAL=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_THERMAL_BEHIND_PMC=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_TIMER=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_UART=y
-CONFIG_INTEL_LPSS_UART_FOR_CONSOLE=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_USB4=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_USB4_PCIE=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_USB4_XHCI=y
-CONFIG_SOC_INTEL_ENABLE_USB4_PCIE_RESOURCES=y
-# CONFIG_FIRMWARE_CONNECTION_MANAGER is not set
-CONFIG_SOFTWARE_CONNECTION_MANAGER=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_VTD=y
-CONFIG_ENABLE_EARLY_DMA_PROTECTION=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_XDCI=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_XHCI=y
-CONFIG_SOC_INTEL_COMMON_BLOCK_XHCI_ELOG=y
-
-#
-# Intel SoC Common PCH Code
-#
-CONFIG_SOC_INTEL_COMMON_PCH_CLIENT=y
-CONFIG_SOC_INTEL_COMMON_PCH_BASE=y
-CONFIG_SOC_INTEL_COMMON_PCH_LOCKDOWN=y
-CONFIG_SOC_INTEL_COMMON_SPI_LOCKDOWN_SMM=y
-CONFIG_PCH_SPECIFIC_BASE_OPTIONS=y
-CONFIG_PCH_SPECIFIC_DISCRETE_OPTIONS=y
-CONFIG_PCH_SPECIFIC_CLIENT_OPTIONS=y
-
-#
-# Intel SoC Common coreboot stages and non-IP blocks
-#
-CONFIG_SOC_INTEL_COMMON_BASECODE=y
-CONFIG_SOC_INTEL_COMMON_RESET=y
-CONFIG_SOC_INTEL_COMMON_ACPI_WAKE_SOURCE=y
-CONFIG_PAVP=y
-# CONFIG_SOC_INTEL_DEBUG_CONSENT is not set
-CONFIG_HAVE_INTEL_COMPLIANCE_TEST_MODE=y
-# CONFIG_SOC_INTEL_COMPLIANCE_TEST_MODE is not set
-CONFIG_SOC_INTEL_CRASHLOG=y
-CONFIG_SOC_INTEL_IOE_DIE_SUPPORT=y
-
-#
-# CPU
-#
-CONFIG_CPU_INTEL_FIRMWARE_INTERFACE_TABLE=y
-CONFIG_CPU_INTEL_COMMON=y
-CONFIG_ENABLE_VMX=y
-CONFIG_SET_IA32_FC_LOCK_BIT=y
-CONFIG_SET_MSR_AESNI_LOCK_BIT=y
-CONFIG_CPU_INTEL_COMMON_VOLTAGE=y
-CONFIG_CPU_INTEL_COMMON_SMM=y
-CONFIG_PARALLEL_MP=y
-CONFIG_PARALLEL_MP_AP_WORK=y
-CONFIG_DEFAULT_X2APIC_LATE_WORKAROUND=y
-# CONFIG_XAPIC_ONLY is not set
-# CONFIG_X2APIC_ONLY is not set
-# CONFIG_X2APIC_RUNTIME is not set
-CONFIG_X2APIC_LATE_WORKAROUND=y
-CONFIG_UDELAY_TSC=y
-CONFIG_TSC_MONOTONIC_TIMER=y
-CONFIG_X86_CLFLUSH_CAR=y
-CONFIG_HAVE_SMI_HANDLER=y
-CONFIG_SMM_TSEG=y
-CONFIG_SMM_PCI_RESOURCE_STORE_NUM_SLOTS=8
-CONFIG_X86_INIT_NEED_1_SIPI=y
-CONFIG_AP_STACK_SIZE=0x800
-CONFIG_SMP=y
-CONFIG_SSE=y
-CONFIG_SSE2=y
-CONFIG_SUPPORT_CPU_UCODE_IN_CBFS=y
-CONFIG_USE_CPU_MICROCODE_CBFS_BINS=y
-CONFIG_CPU_MICROCODE_CBFS_DEFAULT_BINS=y
-# CONFIG_CPU_MICROCODE_CBFS_EXTERNAL_BINS is not set
-# CONFIG_CPU_MICROCODE_CBFS_EXTERNAL_HEADER is not set
-# CONFIG_CPU_MICROCODE_CBFS_NONE is not set
-
-#
-# Northbridge
-#
-
-#
-# Southbridge
-#
-CONFIG_PCIEXP_HOTPLUG=y
-CONFIG_INTEL_DESCRIPTOR_MODE_REQUIRED=y
-CONFIG_SOUTHBRIDGE_INTEL_COMMON_SMBUS=y
-CONFIG_SOUTHBRIDGE_INTEL_COMMON_PIRQ_ACPI_GEN=y
-CONFIG_HAVE_INTEL_CHIPSET_LOCKDOWN=y
-CONFIG_INTEL_DESCRIPTOR_MODE_CAPABLE=y
-# CONFIG_VALIDATE_INTEL_DESCRIPTOR is not set
-# CONFIG_INTEL_CHIPSET_LOCKDOWN is not set
-CONFIG_FIXED_RCBA_MMIO_BASE=0xfed1c000
-CONFIG_RCBA_LENGTH=0x4000
-
-#
-# Super I/O
-#
-
-#
-# Embedded Controllers
-#
-CONFIG_EC_ACPI=y
-CONFIG_EC_SYSTEM76_EC=y
-# CONFIG_EC_SYSTEM76_EC_UPDATE is not set
-
-#
-# Intel Firmware
-#
-# CONFIG_IFDTOOL_DISABLE_ME is not set
-CONFIG_HAVE_ME_BIN=y
-# CONFIG_STITCH_ME_BIN is not set
-# CONFIG_ME_REGION_ALLOW_CPU_READ_ACCESS is not set
-CONFIG_HAVE_INTEL_ME_HAP=y
-# CONFIG_INTEL_ME_DISABLED_HECI is not set
-CONFIG_INTEL_ME_DISABLED_HAP=y
-# CONFIG_INTEL_ME_ENABLED is not set
-CONFIG_INTEL_ME_DEFAULT_STATE=2
-CONFIG_MAINBOARD_USES_IFD_GBE_REGION=y
-CONFIG_HAVE_GBE_BIN=y
-# CONFIG_DO_NOT_TOUCH_DESCRIPTOR_REGION is not set
-# CONFIG_LOCK_MANAGEMENT_ENGINE is not set
-CONFIG_UNLOCK_FLASH_REGIONS=y
-CONFIG_BIOS_VENDOR="3mdeb"
-
-#
-# Dasharo
-#
-
-#
-# Dasharo Configuration
-#
-CONFIG_DASHARO_PREFER_S3_SLEEP=y
-CONFIG_DASHARO_FIRMWARE_UPDATE_MODE=y
-# end of Dasharo Configuration
-
-CONFIG_UDK_BASE=y
-# CONFIG_UDK_202005_BINDING is not set
-CONFIG_UDK_202302_BINDING=y
-CONFIG_UDK_2013_VERSION=2013
-CONFIG_UDK_2017_VERSION=2017
-CONFIG_UDK_202005_VERSION=202005
-CONFIG_UDK_202302_VERSION=202302
-CONFIG_UDK_VERSION=202302
-CONFIG_ARCH_X86=y
-CONFIG_ARCH_BOOTBLOCK_X86_32=y
-CONFIG_ARCH_VERSTAGE_X86_32=y
-CONFIG_ARCH_ROMSTAGE_X86_32=y
-CONFIG_ARCH_POSTCAR_X86_32=y
-CONFIG_ARCH_RAMSTAGE_X86_32=y
-CONFIG_ARCH_ALL_STAGES_X86_32=y
-CONFIG_RESERVED_PHYSICAL_ADDRESS_BITS_SUPPORT=y
-CONFIG_X86_CUSTOM_BOOTMEDIA=y
-CONFIG_POSTRAM_CBFS_CACHE_IN_BSS=y
-CONFIG_RAMSTAGE_CBFS_CACHE_SIZE=0x4000
-CONFIG_PC80_SYSTEM=y
-CONFIG_HAVE_CMOS_DEFAULT=y
-CONFIG_POSTCAR_STAGE=y
-CONFIG_BOOTBLOCK_SIMPLE=y
-# CONFIG_BOOTBLOCK_NORMAL is not set
-CONFIG_COLLECT_TIMESTAMPS_TSC=y
-CONFIG_IDT_IN_EVERY_STAGE=y
-CONFIG_HAVE_CF9_RESET=y
-CONFIG_DEBUG_HW_BREAKPOINTS=y
-CONFIG_DEBUG_HW_BREAKPOINTS_IN_ALL_STAGES=y
-CONFIG_DEBUG_NULL_DEREF_BREAKPOINTS=y
-CONFIG_DEBUG_NULL_DEREF_BREAKPOINTS_IN_ALL_STAGES=y
-# CONFIG_DUMP_SMBIOS_TYPE17 is not set
-# end of Chipset
-
-#
-# Devices
-#
-CONFIG_HAVE_LINEAR_FRAMEBUFFER=y
-CONFIG_HAVE_FSP_GOP=y
-# CONFIG_VGA_ROM_RUN is not set
-CONFIG_RUN_FSP_GOP=y
-# CONFIG_NO_GFX_INIT is not set
-CONFIG_NO_EARLY_GFX_INIT=y
-
-#
-# Display
-#
-CONFIG_GENERIC_LINEAR_FRAMEBUFFER=y
-CONFIG_LINEAR_FRAMEBUFFER=y
-CONFIG_BOOTSPLASH=y
-# end of Display
-
-CONFIG_PCI=y
-CONFIG_ECAM_MMCONF_SUPPORT=y
-CONFIG_PCIX_PLUGIN_SUPPORT=y
-CONFIG_AZALIA_HDA_CODEC_SUPPORT=y
-CONFIG_AZALIA_LOCK_DOWN_R_WO_GCAP=y
-CONFIG_PCIEXP_PLUGIN_SUPPORT=y
-CONFIG_ECAM_MMCONF_LENGTH=0x10000000
-CONFIG_PCI_ALLOW_BUS_MASTER=y
-CONFIG_PCI_SET_BUS_MASTER_PCI_BRIDGES=y
-CONFIG_PCI_ALLOW_BUS_MASTER_ANY_DEVICE=y
-CONFIG_PCIEXP_SUPPORT_RESIZABLE_BARS=y
-CONFIG_PCIEXP_LANE_ERR_STAT_CLEAR=y
-CONFIG_PCIEXP_HOTPLUG_PREFETCH_MEM_BELOW_4G=y
-CONFIG_PCIEXP_HOTPLUG_IO=0x800
-# CONFIG_EARLY_PCI_BRIDGE is not set
-CONFIG_SUBSYSTEM_VENDOR_ID=0x0000
-CONFIG_SUBSYSTEM_DEVICE_ID=0x0000
-CONFIG_INTEL_GMA_HAVE_VBT=y
-CONFIG_INTEL_GMA_ADD_VBT=y
-# CONFIG_SOFTWARE_I2C is not set
-CONFIG_I2C_TRANSFER_TIMEOUT_US=500000
-# CONFIG_RESOURCE_ALLOCATION_TOP_DOWN is not set
-# end of Devices
-
-#
-# Generic Drivers
-#
-CONFIG_CRB_TPM_BASE_ADDRESS=0xfed40000
-# CONFIG_DRIVERS_EFI_VARIABLE_STORE is not set
-# CONFIG_ELOG is not set
-CONFIG_CACHE_MRC_SETTINGS=y
-CONFIG_MRC_SETTINGS_PROTECT=y
-CONFIG_MRC_CACHE_USING_MRC_VERSION=y
-# CONFIG_SMMSTORE is not set
-CONFIG_SPI_FLASH=y
-CONFIG_BOOT_DEVICE_SPI_FLASH_RW_NOMMAP=y
-CONFIG_BOOT_DEVICE_SPI_FLASH_RW_NOMMAP_EARLY=y
-CONFIG_SPI_FLASH_SMM=y
-# CONFIG_SPI_FLASH_NO_FAST_READ is not set
-CONFIG_TPM_INIT_RAMSTAGE=y
-CONFIG_TPM_PPI=y
-CONFIG_DRIVERS_UART=y
-CONFIG_NO_UART_ON_SUPERIO=y
-CONFIG_DRIVERS_UART_8250MEM=y
-CONFIG_DRIVERS_UART_8250MEM_32=y
-# CONFIG_VPD is not set
-CONFIG_DRIVERS_GENERIC_BAYHUB_LV2=y
-# CONFIG_DRIVERS_GENERIC_CBFS_SERIAL is not set
-# CONFIG_DRIVERS_GENERIC_CBFS_UUID is not set
-# CONFIG_DRIVERS_GENESYSLOGIC_GL9750 is not set
-# CONFIG_DRIVERS_GENESYSLOGIC_GL9755 is not set
-# CONFIG_DRIVERS_GENESYSLOGIC_GL9763E is not set
-CONFIG_DRIVERS_I2C_DESIGNWARE=y
-CONFIG_DRIVERS_I2C_GENERIC=y
-CONFIG_DRIVERS_I2C_HID=y
-# CONFIG_DRIVERS_I2C_MAX98396 is not set
-# CONFIG_DISPLAY_HOBS is not set
-# CONFIG_DISPLAY_UPD_DATA is not set
-# CONFIG_BMP_LOGO is not set
-CONFIG_PLATFORM_USES_FSP2_0=y
-CONFIG_PLATFORM_USES_FSP2_1=y
-CONFIG_PLATFORM_USES_FSP2_2=y
-CONFIG_PLATFORM_USES_FSP2_3=y
-CONFIG_PLATFORM_USES_FSP2_X86_32=y
-CONFIG_ADD_FSP_BINARIES=y
-CONFIG_FSP_T_LOCATION=0xfffe0000
-CONFIG_FSP_S_CBFS="fsps.bin"
-CONFIG_FSP_M_CBFS="fspm.bin"
-CONFIG_FSP_FULL_FD=y
-CONFIG_FSP_T_RESERVED_SIZE=0x0
-CONFIG_FSP_M_XIP=y
-CONFIG_FSP_USES_CB_STACK=y
-CONFIG_HAVE_FSP_LOGO_SUPPORT=y
-CONFIG_FSP_COMPRESS_FSP_S_LZ4=y
-CONFIG_FSP_STATUS_GLOBAL_RESET_REQUIRED_3=y
-CONFIG_FSP_STATUS_GLOBAL_RESET=0x40000003
-CONFIG_SOC_INTEL_COMMON_FSP_RESET=y
-CONFIG_FSPS_HAS_ARCH_UPD=y
-CONFIG_FSPS_USE_MULTI_PHASE_INIT=y
-CONFIG_FSP_USES_CB_DEBUG_EVENT_HANDLER=y
-# CONFIG_DISPLAY_FSP_TIMESTAMPS is not set
-CONFIG_FSP_ENABLE_SERIAL_DEBUG=y
-CONFIG_INTEL_GMA_ACPI=y
-CONFIG_VBT_CBFS_COMPRESSION_LZMA=y
-# CONFIG_VBT_CBFS_COMPRESSION_LZ4 is not set
-# CONFIG_VBT_CBFS_COMPRESSION_NONE is not set
-CONFIG_VBT_CBFS_COMPRESSION_ALGORITHM="lzma"
-CONFIG_INTEL_GMA_OPREGION_2_1=y
-CONFIG_INTEL_GMA_VERSION_2=y
-CONFIG_DRIVERS_INTEL_PMC=y
-# CONFIG_DRIVERS_NXP_UWB_SR1XX is not set
-# CONFIG_DRIVERS_PS2_KEYBOARD is not set
-CONFIG_DRIVERS_MC146818=y
-CONFIG_USE_PC_CMOS_ALTCENTURY=y
-CONFIG_PC_CMOS_BASE_PORT_BANK0=0x70
-CONFIG_MEMORY_MAPPED_TPM=y
-CONFIG_TPM_TIS_BASE_ADDRESS=0xfed40000
-# CONFIG_DRIVERS_SIL_3114 is not set
-CONFIG_DRIVERS_USB_ACPI=y
-CONFIG_DRIVERS_WIFI_GENERIC=y
-CONFIG_DRIVERS_MTK_WIFI=y
-CONFIG_MP_SERVICES_PPI=y
-CONFIG_MP_SERVICES_PPI_V2=y
-CONFIG_DRIVERS_INTEL_USB4_RETIMER=y
-# end of Generic Drivers
-
-#
-# Security
-#
-
-#
-# CBFS verification
-#
-# CONFIG_CBFS_VERIFICATION is not set
-# end of CBFS verification
-
-#
-# Verified Boot (vboot)
-#
-CONFIG_VBOOT_LIB=y
-# end of Verified Boot (vboot)
-
-#
-# Trusted Platform Module
-#
-# CONFIG_TPM1 is not set
-CONFIG_TPM2=y
-CONFIG_TPM=y
-CONFIG_MAINBOARD_HAS_TPM2=y
-# CONFIG_DEBUG_TPM is not set
-CONFIG_TPM_RDRESP_NEED_DELAY=y
-# CONFIG_TPM_LOG_CB is not set
-CONFIG_TPM_LOG_TPM2=y
-# CONFIG_TPM_HASH_SHA1 is not set
-CONFIG_TPM_HASH_SHA256=y
-# CONFIG_TPM_HASH_SHA384 is not set
-# CONFIG_TPM_HASH_SHA512 is not set
-CONFIG_TPM_MEASURED_BOOT_RUNTIME_DATA=""
-CONFIG_PCR_BOOT_MODE=1
-CONFIG_PCR_HWID=1
-CONFIG_PCR_SRTM=2
-CONFIG_PCR_FW_VER=10
-CONFIG_PCR_RUNTIME_DATA=3
-# end of Trusted Platform Module
-
-#
-# Memory initialization
-#
-CONFIG_PLATFORM_HAS_DRAM_CLEAR=y
-# CONFIG_SECURITY_CLEAR_DRAM_ON_REGULAR_BOOT is not set
-# end of Memory initialization
-
-# CONFIG_INTEL_TXT is not set
-# CONFIG_STM is not set
-# CONFIG_INTEL_CBNT_SUPPORT is not set
-# CONFIG_BOOTMEDIA_LOCK_NONE is not set
-CONFIG_BOOTMEDIA_LOCK_CONTROLLER=y
-# CONFIG_BOOTMEDIA_LOCK_CHIP is not set
-CONFIG_BOOTMEDIA_LOCK_WHOLE_RO=y
-# CONFIG_BOOTMEDIA_LOCK_WHOLE_NO_ACCESS is not set
-# CONFIG_BOOTMEDIA_LOCK_WPRO_VBOOT_RO is not set
-# CONFIG_BOOTMEDIA_SMM_BWP is not set
-# end of Security
-
-CONFIG_ACPI_HAVE_PCAT_8259=y
-CONFIG_ACPI_INTEL_HARDWARE_SLEEP_VALUES=y
-CONFIG_ACPI_SOC_NVS=y
-CONFIG_ACPI_CUSTOM_MADT=y
-CONFIG_ACPI_COMMON_MADT_IOAPIC=y
-CONFIG_HAVE_ACPI_TABLES=y
-CONFIG_ACPI_LPIT=y
-CONFIG_BOOT_DEVICE_SPI_FLASH=y
-CONFIG_BOOT_DEVICE_MEMORY_MAPPED=y
-CONFIG_BOOT_DEVICE_SUPPORTS_WRITES=y
-CONFIG_RTC=y
-CONFIG_HEAP_SIZE=0x100000
-
-#
-# Console
-#
-CONFIG_BOOTBLOCK_CONSOLE=y
-CONFIG_POSTCAR_CONSOLE=y
-CONFIG_SQUELCH_EARLY_SMP=y
-CONFIG_FIXED_UART_FOR_CONSOLE=y
-# CONFIG_SPKMODEM is not set
-# CONFIG_CONSOLE_NE2K is not set
-CONFIG_CONSOLE_CBMEM=y
-# CONFIG_CONSOLE_CBMEM_DUMP_TO_UART is not set
-# CONFIG_CONSOLE_SPI_FLASH is not set
-# CONFIG_CONSOLE_I2C_SMBUS is not set
-# CONFIG_CONSOLE_SYSTEM76_EC is not set
-# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_8 is not set
-CONFIG_DEFAULT_CONSOLE_LOGLEVEL_7=y
-# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_6 is not set
-# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_5 is not set
-# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_4 is not set
-# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_3 is not set
-# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_2 is not set
-# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_1 is not set
-# CONFIG_DEFAULT_CONSOLE_LOGLEVEL_0 is not set
-CONFIG_DEFAULT_CONSOLE_LOGLEVEL=7
-CONFIG_CONSOLE_USE_LOGLEVEL_PREFIX=y
-CONFIG_CONSOLE_USE_ANSI_ESCAPES=y
-# CONFIG_CMOS_POST is not set
-CONFIG_HWBASE_DEBUG_CB=y
-# end of Console
-
-CONFIG_ACPI_S1_NOT_SUPPORTED=y
-CONFIG_HAVE_ACPI_RESUME=y
-CONFIG_RESUME_PATH_SAME_AS_BOOT=y
-CONFIG_HAVE_MONOTONIC_TIMER=y
-CONFIG_HAVE_OPTION_TABLE=y
-CONFIG_IOAPIC=y
-
-#
-# System tables
-#
-CONFIG_GENERATE_SMBIOS_TABLES=y
-CONFIG_MAINBOARD_SERIAL_NUMBER="123456789"
-# end of System tables
-
-#
-# Payload
-#
-# CONFIG_PAYLOAD_NONE is not set
-# CONFIG_PAYLOAD_ELF is not set
-# CONFIG_PAYLOAD_BOOTBOOT is not set
-# CONFIG_PAYLOAD_FILO is not set
-# CONFIG_PAYLOAD_GRUB2 is not set
-# CONFIG_PAYLOAD_SEAGRUB is not set
-# CONFIG_PAYLOAD_LINUXBOOT is not set
-# CONFIG_PAYLOAD_SEABIOS is not set
-# CONFIG_PAYLOAD_UBOOT is not set
-# CONFIG_PAYLOAD_EDK2 is not set
-CONFIG_PAYLOAD_LINUX=y
-CONFIG_PAYLOAD_FILE="@BOARD_BUILD_DIR@/bzImage"
-CONFIG_PAYLOAD_OPTIONS=""
-# CONFIG_PXE is not set
-CONFIG_LINUX_INITRD="@BOARD_BUILD_DIR@/initrd.cpio.xz"
-
-#
-# Dasharo specific payload options
-#
-# end of Dasharo specific payload options
-
-# CONFIG_PAYLOAD_IS_FLAT_BINARY is not set
-CONFIG_COMPRESS_SECONDARY_PAYLOAD=y
-
-#
-# Secondary Payloads
-#
-# CONFIG_COREINFO_SECONDARY_PAYLOAD is not set
-# CONFIG_GRUB2_SECONDARY_PAYLOAD is not set
-# CONFIG_MEMTEST_SECONDARY_PAYLOAD is not set
-# CONFIG_NVRAMCUI_SECONDARY_PAYLOAD is not set
-# CONFIG_SEABIOS_SECONDARY_PAYLOAD is not set
-# CONFIG_TINT_SECONDARY_PAYLOAD is not set
-# CONFIG_COREDOOM_SECONDARY_PAYLOAD is not set
-# end of Secondary Payloads
-# end of Payload
-
-#
-# Debugging
-#
-
-#
-# CPU Debug Settings
-#
-# CONFIG_DISPLAY_MTRRS is not set
-
-#
-# Vendorcode Debug Settings
-#
-
-#
-# BLOB Debug Settings
-#
-# CONFIG_DISPLAY_FSP_CALLS_AND_STATUS is not set
-# CONFIG_DISPLAY_FSP_HEADER is not set
-# CONFIG_VERIFY_HOBS is not set
-# CONFIG_DISPLAY_FSP_VERSION_INFO is not set
-CONFIG_DISPLAY_FSP_VERSION_INFO_2=y
-# CONFIG_ENABLE_FSP_ERROR_INFO is not set
-CONFIG_HAVE_GPIO_SNAPSHOT_VERIFY_SUPPORT=y
-# CONFIG_CHECK_GPIO_CONFIG_CHANGES is not set
-
-#
-# General Debug Settings
-#
-# CONFIG_GDB_STUB is not set
-# CONFIG_FATAL_ASSERTS is not set
-CONFIG_HAVE_DEBUG_GPIO=y
-# CONFIG_DEBUG_GPIO is not set
-# CONFIG_DEBUG_CBFS is not set
-CONFIG_HAVE_DEBUG_RAM_SETUP=y
-# CONFIG_DEBUG_RAM_SETUP is not set
-CONFIG_HAVE_DEBUG_SMBUS=y
-# CONFIG_DEBUG_SMBUS is not set
-# CONFIG_DEBUG_MALLOC is not set
-# CONFIG_DEBUG_CONSOLE_INIT is not set
-# CONFIG_DEBUG_SPI_FLASH is not set
-# CONFIG_DEBUG_BOOT_STATE is not set
-# CONFIG_DEBUG_ADA_CODE is not set
-CONFIG_HAVE_EM100_SUPPORT=y
-# CONFIG_EM100 is not set
-# CONFIG_DEBUG_ACPICA_COMPATIBLE is not set
-# end of Debugging
-
-CONFIG_SPD_READ_BY_WORD=y
-CONFIG_DECOMPRESS_OFAST=y
-CONFIG_WARNINGS_ARE_ERRORS=y
-CONFIG_MAX_REBOOT_CNT=3
-CONFIG_RELOCATABLE_MODULES=y
-CONFIG_GENERIC_GPIO_LIB=y
-CONFIG_HAVE_BOOTBLOCK=y
-CONFIG_HAVE_ROMSTAGE=y
-CONFIG_HAVE_RAMSTAGE=y
diff --git a/modules/coreboot b/modules/coreboot
index 66b1a521..5793983f 100644
--- a/modules/coreboot
+++ b/modules/coreboot
@@ -91,7 +91,7 @@ coreboot-purism_repo := https://source.puri.sm/firmware/coreboot.git
 coreboot-purism_commit_hash := bea9947a1279be7d4a72b38a601d0288d10d1cb8
 $(eval $(call coreboot_module,purism,24.02.01))
 
-# MSI and NovaCustom NV4xPZ, NS5xPU, V540TU, V560TU boards are based on Dasharo
+# MSI and NovaCustom NV4xPZ, NS5xPU, V560TU boards are based on Dasharo
 # coreboot fork, based on upstream coreboot version 24.02
 coreboot-dasharo_repo := https://github.com/dasharo/coreboot
 coreboot-dasharo_commit_hash := 94e5f5d5b808cf8d8fd5c70d4ef6a08a054f8986

From b59c0e2e3369a87b1f84ddad887dd821268c7e57 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= <michal.kopec@3mdeb.com>
Date: Wed, 15 Jan 2025 16:00:19 +0100
Subject: [PATCH 36/37] Remove leftover Linux 6.11.9 patches
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
---
 modules/linux                                 |  9 ++----
 patches/linux-6.11.9/0001-fake-acpi.patch     | 32 -------------------
 .../linux-6.11.9/0010-winterfell-ahci.patch   | 18 -----------
 3 files changed, 3 insertions(+), 56 deletions(-)
 delete mode 100644 patches/linux-6.11.9/0001-fake-acpi.patch
 delete mode 100644 patches/linux-6.11.9/0010-winterfell-ahci.patch

diff --git a/modules/linux b/modules/linux
index 464130f9..5cfa3072 100644
--- a/modules/linux
+++ b/modules/linux
@@ -34,12 +34,9 @@ linux_hash := 40f014d53e81f204f6d2a364aae4201ae07970dd1b70dc602d7c66c1a140f558
 else ifeq "$(CONFIG_LINUX_VERSION)" "6.1.8"
 linux_version := 6.1.8
 linux_hash := b60bb53ab8ba370a270454b11e93d41af29126fc72bd6ede517673e2e57b816d
-else ifeq "$(CONFIG_LINUX_VERSION)" "6.11.9"
-linux_version := 6.11.9
-linux_hash := 75658a7aa3bd9598c96ee1e5862c5e1d34fced75c28d825c727a1510a6f384b4
 else
 $(error "$(BOARD): does not specify linux kernel version under CONFIG_LINUX_VERSION")
-endif 
+endif
 
 linux_base_dir := linux-$(linux_version)
 
@@ -222,7 +219,7 @@ $(build)/$(BOARD)/$(LINUX_IMAGE_FILE).bundled: \
 
 # modify_and_save_defconfig_in_place target allows us edit current in tree config
 # under linux decompressed+patched directory through menuconfig
-# and put it back in git tree to check changes with git difftool iteratively 
+# and put it back in git tree to check changes with git difftool iteratively
 linux.modify_and_save_defconfig_in_place:
 	cp "$(pwd)/$(linux_kconfig)" "$(build)/$(linux_dir)/.config" && \
 	$(MAKE) \
@@ -307,7 +304,7 @@ linux.save_in_versioned_oldconfig:
 # Then bump board config's CONFIG_LINUX_VERSION. build as usual to extract new linux tarball.
 # Then call make BOARD=xyz linux.prompt_for_new_config_options_for_kernel_version_bump
 #The following ask new config choice for all new symbols that should be evaluated prior of creating PR
-# Tip: Open a browser at https://www.kernelconfig.io/index.html 
+# Tip: Open a browser at https://www.kernelconfig.io/index.html
 linux.prompt_for_new_config_options_for_kernel_version_bump:
 	mkdir -p "$(build)/$(linux_dir)" \
 	&& cp "$(pwd)/$(linux_kconfig)" "$(build)/$(linux_dir)/.config" \
diff --git a/patches/linux-6.11.9/0001-fake-acpi.patch b/patches/linux-6.11.9/0001-fake-acpi.patch
deleted file mode 100644
index 0c8b3b54..00000000
--- a/patches/linux-6.11.9/0001-fake-acpi.patch
+++ /dev/null
@@ -1,32 +0,0 @@
-diff --recursive -u ./clean/linux-4.9.80/drivers/acpi/acpica/evxfevnt.c linux-4.9.80/drivers/acpi/acpica/evxfevnt.c
---- ./clean/linux-4.9.80/drivers/acpi/acpica/evxfevnt.c	2018-02-03 11:05:43.000000000 -0500
-+++ linux-4.9.80/drivers/acpi/acpica/evxfevnt.c	2018-02-07 15:51:28.786502597 -0500
-@@ -111,6 +111,8 @@
- 	}
- 
- 	ACPI_ERROR((AE_INFO, "Hardware did not enter ACPI mode"));
-+printk("%s:%d faking ACPI mode\n", __func__, __LINE__);
-+	return_ACPI_STATUS(AE_OK);
- 	return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE);
- }
- 
-diff --recursive -u ./clean/linux-4.9.80/drivers/acpi/acpica/hwacpi.c linux-4.9.80/drivers/acpi/acpica/hwacpi.c
---- ./clean/linux-4.9.80/drivers/acpi/acpica/hwacpi.c	2018-02-03 11:05:43.000000000 -0500
-+++ linux-4.9.80/drivers/acpi/acpica/hwacpi.c	2018-02-07 15:51:35.126557868 -0500
-@@ -168,12 +168,16 @@
- 
- 	status = acpi_read_bit_register(ACPI_BITREG_SCI_ENABLE, &value);
- 	if (ACPI_FAILURE(status)) {
-+printk("%s:%d faking ACPI mode\n", __func__, __LINE__);
-+		return_UINT32(ACPI_SYS_MODE_ACPI);
- 		return_UINT32(ACPI_SYS_MODE_LEGACY);
- 	}
- 
- 	if (value) {
- 		return_UINT32(ACPI_SYS_MODE_ACPI);
- 	} else {
-+//printk("%s:%d faking ACPI mode\n", __func__, __LINE__);
-+//		return_UINT32(ACPI_SYS_MODE_ACPI);
- 		return_UINT32(ACPI_SYS_MODE_LEGACY);
- 	}
- }
diff --git a/patches/linux-6.11.9/0010-winterfell-ahci.patch b/patches/linux-6.11.9/0010-winterfell-ahci.patch
deleted file mode 100644
index 7f241773..00000000
--- a/patches/linux-6.11.9/0010-winterfell-ahci.patch
+++ /dev/null
@@ -1,18 +0,0 @@
-diff --recursive -u ./clean/linux-4.9.80/drivers/ata/libahci.c linux-4.9.80/drivers/ata/libahci.c
---- ./clean/linux-4.9.80/drivers/ata/libahci.c	2018-02-03 11:05:43.000000000 -0500
-+++ linux-4.9.80/drivers/ata/libahci.c	2018-02-07 18:02:32.526535910 -0500
-@@ -537,8 +537,12 @@
- 	}
- 
- 	/* fabricate port_map from cap.nr_ports for < AHCI 1.3 */
--	if (!port_map && vers < 0x10300) {
--		port_map = (1 << ahci_nr_ports(cap)) - 1;
-+	if (!port_map) { //  && vers < 0x10300) {
-+		printk("%s: saved_port=%02x\n", __func__, hpriv->saved_port_map);
-+		writel(0x1, mmio + HOST_PORTS_IMPL);
-+		port_map = readl(mmio + HOST_PORTS_IMPL);
-+
-+		//port_map = (1 << ahci_nr_ports(cap)) - 1;
- 		dev_warn(dev, "forcing PORTS_IMPL to 0x%lx\n", port_map);
- 
- 		/* write the fixed up value to the PI register */

From eee5039cb37104cc4c08554ac2379252aaa94e49 Mon Sep 17 00:00:00 2001
From: Thierry Laurion <insurgo@riseup.net>
Date: Wed, 15 Jan 2025 13:07:21 -0500
Subject: [PATCH 37/37] Move ns50 to UNTESTED

Move https://github.com/linuxboot/heads/pull/1846 forward.

Signed-off-by: Thierry Laurion <insurgo@riseup.net>
---
 .circleci/config.yml                                          | 4 ++--
 .../UNTESTED_nitropad-ns50.config}                            | 0
 2 files changed, 2 insertions(+), 2 deletions(-)
 rename boards/{nitropad-ns50/nitropad-ns50.config => UNTESTED_nitropad-ns50/UNTESTED_nitropad-ns50.config} (100%)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index cec7a58b..205d0ef7 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -512,8 +512,8 @@ workflows:
 
       # dasharo release, share 24.02.01 utils/crossgcc
       - build:
-          name: nitropad-ns50
-          target: nitropad-ns50
+          name: UNTESTED_nitropad-ns50
+          target: UNTESTED_nitropad-ns50
           subcommand: ""
           requires:
             - novacustom_nv4x_adl
diff --git a/boards/nitropad-ns50/nitropad-ns50.config b/boards/UNTESTED_nitropad-ns50/UNTESTED_nitropad-ns50.config
similarity index 100%
rename from boards/nitropad-ns50/nitropad-ns50.config
rename to boards/UNTESTED_nitropad-ns50/UNTESTED_nitropad-ns50.config